diff options
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmfmac')
36 files changed, 25061 insertions, 0 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/Makefile b/drivers/net/wireless/brcm80211/brcmfmac/Makefile new file mode 100644 index 00000000000..98e67c18f27 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/Makefile @@ -0,0 +1,46 @@ +# +# Makefile fragment for Broadcom 802.11n Networking Device Driver +# +# Copyright (c) 2010 Broadcom Corporation +# +# Permission to use, copy, modify, and/or distribute this software for any +# purpose with or without fee is hereby granted, provided that the above +# copyright notice and this permission notice appear in all copies. +# +# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY +# SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION +# OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN +# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +ccflags-y += \ + -Idrivers/net/wireless/brcm80211/brcmfmac \ + -Idrivers/net/wireless/brcm80211/include + +ccflags-y += -D__CHECK_ENDIAN__ + +obj-$(CONFIG_BRCMFMAC) += brcmfmac.o +brcmfmac-objs += \ + wl_cfg80211.o \ + chip.o \ + fwil.o \ + fweh.o \ + fwsignal.o \ + p2p.o \ + proto.o \ + bcdc.o \ + dhd_common.o \ + dhd_linux.o \ + firmware.o \ + btcoex.o +brcmfmac-$(CONFIG_BRCMFMAC_SDIO) += \ + dhd_sdio.o \ + bcmsdh.o +brcmfmac-$(CONFIG_BRCMFMAC_USB) += \ + usb.o +brcmfmac-$(CONFIG_BRCMDBG) += \ + dhd_dbg.o +brcmfmac-$(CONFIG_BRCM_TRACING) += \ + tracepoint.o diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcdc.c b/drivers/net/wireless/brcm80211/brcmfmac/bcdc.c new file mode 100644 index 00000000000..c229210d50b --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/bcdc.c @@ -0,0 +1,375 @@ +/* + * Copyright (c) 2010 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/******************************************************************************* + * Communicates with the dongle by using dcmd codes. + * For certain dcmd codes, the dongle interprets string data from the host. + ******************************************************************************/ + +#include <linux/types.h> +#include <linux/netdevice.h> + +#include <brcmu_utils.h> +#include <brcmu_wifi.h> + +#include "dhd.h" +#include "dhd_bus.h" +#include "fwsignal.h" +#include "dhd_dbg.h" +#include "tracepoint.h" +#include "proto.h" +#include "bcdc.h" + +struct brcmf_proto_bcdc_dcmd { + __le32 cmd; /* dongle command value */ + __le32 len; /* lower 16: output buflen; + * upper 16: input buflen (excludes header) */ + __le32 flags; /* flag defns given below */ + __le32 status; /* status code returned from the device */ +}; + +/* BCDC flag definitions */ +#define BCDC_DCMD_ERROR 0x01 /* 1=cmd failed */ +#define BCDC_DCMD_SET 0x02 /* 0=get, 1=set cmd */ +#define BCDC_DCMD_IF_MASK 0xF000 /* I/F index */ +#define BCDC_DCMD_IF_SHIFT 12 +#define BCDC_DCMD_ID_MASK 0xFFFF0000 /* id an cmd pairing */ +#define BCDC_DCMD_ID_SHIFT 16 /* ID Mask shift bits */ +#define BCDC_DCMD_ID(flags) \ + (((flags) & BCDC_DCMD_ID_MASK) >> BCDC_DCMD_ID_SHIFT) + +/* + * BCDC header - Broadcom specific extension of CDC. + * Used on data packets to convey priority across USB. + */ +#define BCDC_HEADER_LEN 4 +#define BCDC_PROTO_VER 2 /* Protocol version */ +#define BCDC_FLAG_VER_MASK 0xf0 /* Protocol version mask */ +#define BCDC_FLAG_VER_SHIFT 4 /* Protocol version shift */ +#define BCDC_FLAG_SUM_GOOD 0x04 /* Good RX checksums */ +#define BCDC_FLAG_SUM_NEEDED 0x08 /* Dongle needs to do TX checksums */ +#define BCDC_PRIORITY_MASK 0x7 +#define BCDC_FLAG2_IF_MASK 0x0f /* packet rx interface in APSTA */ +#define BCDC_FLAG2_IF_SHIFT 0 + +#define BCDC_GET_IF_IDX(hdr) \ + ((int)((((hdr)->flags2) & BCDC_FLAG2_IF_MASK) >> BCDC_FLAG2_IF_SHIFT)) +#define BCDC_SET_IF_IDX(hdr, idx) \ + ((hdr)->flags2 = (((hdr)->flags2 & ~BCDC_FLAG2_IF_MASK) | \ + ((idx) << BCDC_FLAG2_IF_SHIFT))) + +/** + * struct brcmf_proto_bcdc_header - BCDC header format + * + * @flags: flags contain protocol and checksum info. + * @priority: 802.1d priority and USB flow control info (bit 4:7). + * @flags2: additional flags containing dongle interface index. + * @data_offset: start of packet data. header is following by firmware signals. + */ +struct brcmf_proto_bcdc_header { + u8 flags; + u8 priority; + u8 flags2; + u8 data_offset; +}; + +/* + * maximum length of firmware signal data between + * the BCDC header and packet data in the tx path. + */ +#define BRCMF_PROT_FW_SIGNAL_MAX_TXBYTES 12 + +#define RETRIES 2 /* # of retries to retrieve matching dcmd response */ +#define BUS_HEADER_LEN (16+64) /* Must be atleast SDPCM_RESERVE + * (amount of header tha might be added) + * plus any space that might be needed + * for bus alignment padding. + */ +struct brcmf_bcdc { + u16 reqid; + u8 bus_header[BUS_HEADER_LEN]; + struct brcmf_proto_bcdc_dcmd msg; + unsigned char buf[BRCMF_DCMD_MAXLEN]; +}; + + +static int +brcmf_proto_bcdc_msg(struct brcmf_pub *drvr, int ifidx, uint cmd, void *buf, + uint len, bool set) +{ + struct brcmf_bcdc *bcdc = (struct brcmf_bcdc *)drvr->proto->pd; + struct brcmf_proto_bcdc_dcmd *msg = &bcdc->msg; + u32 flags; + + brcmf_dbg(BCDC, "Enter\n"); + + memset(msg, 0, sizeof(struct brcmf_proto_bcdc_dcmd)); + + msg->cmd = cpu_to_le32(cmd); + msg->len = cpu_to_le32(len); + flags = (++bcdc->reqid << BCDC_DCMD_ID_SHIFT); + if (set) + flags |= BCDC_DCMD_SET; + flags = (flags & ~BCDC_DCMD_IF_MASK) | + (ifidx << BCDC_DCMD_IF_SHIFT); + msg->flags = cpu_to_le32(flags); + + if (buf) + memcpy(bcdc->buf, buf, len); + + len += sizeof(*msg); + if (len > BRCMF_TX_IOCTL_MAX_MSG_SIZE) + len = BRCMF_TX_IOCTL_MAX_MSG_SIZE; + + /* Send request */ + return brcmf_bus_txctl(drvr->bus_if, (unsigned char *)&bcdc->msg, len); +} + +static int brcmf_proto_bcdc_cmplt(struct brcmf_pub *drvr, u32 id, u32 len) +{ + int ret; + struct brcmf_bcdc *bcdc = (struct brcmf_bcdc *)drvr->proto->pd; + + brcmf_dbg(BCDC, "Enter\n"); + len += sizeof(struct brcmf_proto_bcdc_dcmd); + do { + ret = brcmf_bus_rxctl(drvr->bus_if, (unsigned char *)&bcdc->msg, + len); + if (ret < 0) + break; + } while (BCDC_DCMD_ID(le32_to_cpu(bcdc->msg.flags)) != id); + + return ret; +} + +static int +brcmf_proto_bcdc_query_dcmd(struct brcmf_pub *drvr, int ifidx, uint cmd, + void *buf, uint len) +{ + struct brcmf_bcdc *bcdc = (struct brcmf_bcdc *)drvr->proto->pd; + struct brcmf_proto_bcdc_dcmd *msg = &bcdc->msg; + void *info; + int ret = 0, retries = 0; + u32 id, flags; + + brcmf_dbg(BCDC, "Enter, cmd %d len %d\n", cmd, len); + + ret = brcmf_proto_bcdc_msg(drvr, ifidx, cmd, buf, len, false); + if (ret < 0) { + brcmf_err("brcmf_proto_bcdc_msg failed w/status %d\n", + ret); + goto done; + } + +retry: + /* wait for interrupt and get first fragment */ + ret = brcmf_proto_bcdc_cmplt(drvr, bcdc->reqid, len); + if (ret < 0) + goto done; + + flags = le32_to_cpu(msg->flags); + id = (flags & BCDC_DCMD_ID_MASK) >> BCDC_DCMD_ID_SHIFT; + + if ((id < bcdc->reqid) && (++retries < RETRIES)) + goto retry; + if (id != bcdc->reqid) { + brcmf_err("%s: unexpected request id %d (expected %d)\n", + brcmf_ifname(drvr, ifidx), id, bcdc->reqid); + ret = -EINVAL; + goto done; + } + + /* Check info buffer */ + info = (void *)&msg[1]; + + /* Copy info buffer */ + if (buf) { + if (ret < (int)len) + len = ret; + memcpy(buf, info, len); + } + + /* Check the ERROR flag */ + if (flags & BCDC_DCMD_ERROR) + ret = le32_to_cpu(msg->status); + +done: + return ret; +} + +static int +brcmf_proto_bcdc_set_dcmd(struct brcmf_pub *drvr, int ifidx, uint cmd, + void *buf, uint len) +{ + struct brcmf_bcdc *bcdc = (struct brcmf_bcdc *)drvr->proto->pd; + struct brcmf_proto_bcdc_dcmd *msg = &bcdc->msg; + int ret = 0; + u32 flags, id; + + brcmf_dbg(BCDC, "Enter, cmd %d len %d\n", cmd, len); + + ret = brcmf_proto_bcdc_msg(drvr, ifidx, cmd, buf, len, true); + if (ret < 0) + goto done; + + ret = brcmf_proto_bcdc_cmplt(drvr, bcdc->reqid, len); + if (ret < 0) + goto done; + + flags = le32_to_cpu(msg->flags); + id = (flags & BCDC_DCMD_ID_MASK) >> BCDC_DCMD_ID_SHIFT; + + if (id != bcdc->reqid) { + brcmf_err("%s: unexpected request id %d (expected %d)\n", + brcmf_ifname(drvr, ifidx), id, bcdc->reqid); + ret = -EINVAL; + goto done; + } + + /* Check the ERROR flag */ + if (flags & BCDC_DCMD_ERROR) + ret = le32_to_cpu(msg->status); + +done: + return ret; +} + +static void +brcmf_proto_bcdc_hdrpush(struct brcmf_pub *drvr, int ifidx, u8 offset, + struct sk_buff *pktbuf) +{ + struct brcmf_proto_bcdc_header *h; + + brcmf_dbg(BCDC, "Enter\n"); + + /* Push BDC header used to convey priority for buses that don't */ + skb_push(pktbuf, BCDC_HEADER_LEN); + + h = (struct brcmf_proto_bcdc_header *)(pktbuf->data); + + h->flags = (BCDC_PROTO_VER << BCDC_FLAG_VER_SHIFT); + if (pktbuf->ip_summed == CHECKSUM_PARTIAL) + h->flags |= BCDC_FLAG_SUM_NEEDED; + + h->priority = (pktbuf->priority & BCDC_PRIORITY_MASK); + h->flags2 = 0; + h->data_offset = offset; + BCDC_SET_IF_IDX(h, ifidx); + trace_brcmf_bcdchdr(pktbuf->data); +} + +static int +brcmf_proto_bcdc_hdrpull(struct brcmf_pub *drvr, bool do_fws, u8 *ifidx, + struct sk_buff *pktbuf) +{ + struct brcmf_proto_bcdc_header *h; + + brcmf_dbg(BCDC, "Enter\n"); + + /* Pop BCDC header used to convey priority for buses that don't */ + if (pktbuf->len <= BCDC_HEADER_LEN) { + brcmf_dbg(INFO, "rx data too short (%d <= %d)\n", + pktbuf->len, BCDC_HEADER_LEN); + return -EBADE; + } + + trace_brcmf_bcdchdr(pktbuf->data); + h = (struct brcmf_proto_bcdc_header *)(pktbuf->data); + + *ifidx = BCDC_GET_IF_IDX(h); + if (*ifidx >= BRCMF_MAX_IFS) { + brcmf_err("rx data ifnum out of range (%d)\n", *ifidx); + return -EBADE; + } + /* The ifidx is the idx to map to matching netdev/ifp. When receiving + * events this is easy because it contains the bssidx which maps + * 1-on-1 to the netdev/ifp. But for data frames the ifidx is rcvd. + * bssidx 1 is used for p2p0 and no data can be received or + * transmitted on it. Therefor bssidx is ifidx + 1 if ifidx > 0 + */ + if (*ifidx) + (*ifidx)++; + + if (((h->flags & BCDC_FLAG_VER_MASK) >> BCDC_FLAG_VER_SHIFT) != + BCDC_PROTO_VER) { + brcmf_err("%s: non-BCDC packet received, flags 0x%x\n", + brcmf_ifname(drvr, *ifidx), h->flags); + return -EBADE; + } + + if (h->flags & BCDC_FLAG_SUM_GOOD) { + brcmf_dbg(BCDC, "%s: BDC rcv, good checksum, flags 0x%x\n", + brcmf_ifname(drvr, *ifidx), h->flags); + pktbuf->ip_summed = CHECKSUM_UNNECESSARY; + } + + pktbuf->priority = h->priority & BCDC_PRIORITY_MASK; + + skb_pull(pktbuf, BCDC_HEADER_LEN); + if (do_fws) + brcmf_fws_hdrpull(drvr, *ifidx, h->data_offset << 2, pktbuf); + else + skb_pull(pktbuf, h->data_offset << 2); + + if (pktbuf->len == 0) + return -ENODATA; + return 0; +} + +static int +brcmf_proto_bcdc_txdata(struct brcmf_pub *drvr, int ifidx, u8 offset, + struct sk_buff *pktbuf) +{ + brcmf_proto_bcdc_hdrpush(drvr, ifidx, offset, pktbuf); + return brcmf_bus_txdata(drvr->bus_if, pktbuf); +} + + +int brcmf_proto_bcdc_attach(struct brcmf_pub *drvr) +{ + struct brcmf_bcdc *bcdc; + + bcdc = kzalloc(sizeof(*bcdc), GFP_ATOMIC); + if (!bcdc) + goto fail; + + /* ensure that the msg buf directly follows the cdc msg struct */ + if ((unsigned long)(&bcdc->msg + 1) != (unsigned long)bcdc->buf) { + brcmf_err("struct brcmf_proto_bcdc is not correctly defined\n"); + goto fail; + } + + drvr->proto->hdrpull = brcmf_proto_bcdc_hdrpull; + drvr->proto->query_dcmd = brcmf_proto_bcdc_query_dcmd; + drvr->proto->set_dcmd = brcmf_proto_bcdc_set_dcmd; + drvr->proto->txdata = brcmf_proto_bcdc_txdata; + drvr->proto->pd = bcdc; + + drvr->hdrlen += BCDC_HEADER_LEN + BRCMF_PROT_FW_SIGNAL_MAX_TXBYTES; + drvr->bus_if->maxctl = BRCMF_DCMD_MAXLEN + + sizeof(struct brcmf_proto_bcdc_dcmd); + return 0; + +fail: + kfree(bcdc); + return -ENOMEM; +} + +void brcmf_proto_bcdc_detach(struct brcmf_pub *drvr) +{ + kfree(drvr->proto->pd); + drvr->proto->pd = NULL; +} diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcdc.h b/drivers/net/wireless/brcm80211/brcmfmac/bcdc.h new file mode 100644 index 00000000000..17e8c039ff3 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/bcdc.h @@ -0,0 +1,24 @@ +/* + * Copyright (c) 2013 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#ifndef BRCMFMAC_BCDC_H +#define BRCMFMAC_BCDC_H + + +int brcmf_proto_bcdc_attach(struct brcmf_pub *drvr); +void brcmf_proto_bcdc_detach(struct brcmf_pub *drvr); + + +#endif /* BRCMFMAC_BCDC_H */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c new file mode 100644 index 00000000000..a16e644e7c0 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c @@ -0,0 +1,1218 @@ +/* + * Copyright (c) 2010 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +/* ****************** SDIO CARD Interface Functions **************************/ + +#include <linux/types.h> +#include <linux/netdevice.h> +#include <linux/pci.h> +#include <linux/pci_ids.h> +#include <linux/sched.h> +#include <linux/completion.h> +#include <linux/scatterlist.h> +#include <linux/mmc/sdio.h> +#include <linux/mmc/core.h> +#include <linux/mmc/sdio_func.h> +#include <linux/mmc/sdio_ids.h> +#include <linux/mmc/card.h> +#include <linux/mmc/host.h> +#include <linux/platform_device.h> +#include <linux/platform_data/brcmfmac-sdio.h> +#include <linux/suspend.h> +#include <linux/errno.h> +#include <linux/module.h> +#include <net/cfg80211.h> + +#include <defs.h> +#include <brcm_hw_ids.h> +#include <brcmu_utils.h> +#include <brcmu_wifi.h> +#include <soc.h> +#include "dhd_bus.h" +#include "dhd_dbg.h" +#include "sdio_host.h" + +#define SDIOH_API_ACCESS_RETRY_LIMIT 2 + +#define DMA_ALIGN_MASK 0x03 + +#define SDIO_FUNC1_BLOCKSIZE 64 +#define SDIO_FUNC2_BLOCKSIZE 512 +/* Maximum milliseconds to wait for F2 to come up */ +#define SDIO_WAIT_F2RDY 3000 + +#define BRCMF_DEFAULT_TXGLOM_SIZE 32 /* max tx frames in glom chain */ +#define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */ + +static int brcmf_sdiod_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE; +module_param_named(txglomsz, brcmf_sdiod_txglomsz, int, 0); +MODULE_PARM_DESC(txglomsz, "maximum tx packet chain size [SDIO]"); + +static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev_id); + struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; + + brcmf_dbg(INTR, "OOB intr triggered\n"); + + /* out-of-band interrupt is level-triggered which won't + * be cleared until dpc + */ + if (sdiodev->irq_en) { + disable_irq_nosync(irq); + sdiodev->irq_en = false; + } + + brcmf_sdio_isr(sdiodev->bus); + + return IRQ_HANDLED; +} + +static void brcmf_sdiod_ib_irqhandler(struct sdio_func *func) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev); + struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; + + brcmf_dbg(INTR, "IB intr triggered\n"); + + brcmf_sdio_isr(sdiodev->bus); +} + +/* dummy handler for SDIO function 2 interrupt */ +static void brcmf_sdiod_dummy_irqhandler(struct sdio_func *func) +{ +} + +static bool brcmf_sdiod_pm_resume_error(struct brcmf_sdio_dev *sdiodev) +{ + bool is_err = false; +#ifdef CONFIG_PM_SLEEP + is_err = atomic_read(&sdiodev->suspend); +#endif + return is_err; +} + +static void brcmf_sdiod_pm_resume_wait(struct brcmf_sdio_dev *sdiodev, + wait_queue_head_t *wq) +{ +#ifdef CONFIG_PM_SLEEP + int retry = 0; + while (atomic_read(&sdiodev->suspend) && retry++ != 30) + wait_event_timeout(*wq, false, HZ/100); +#endif +} + +int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev) +{ + int ret = 0; + u8 data; + unsigned long flags; + + if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) { + brcmf_dbg(SDIO, "Enter, register OOB IRQ %d\n", + sdiodev->pdata->oob_irq_nr); + ret = request_irq(sdiodev->pdata->oob_irq_nr, + brcmf_sdiod_oob_irqhandler, + sdiodev->pdata->oob_irq_flags, + "brcmf_oob_intr", + &sdiodev->func[1]->dev); + if (ret != 0) { + brcmf_err("request_irq failed %d\n", ret); + return ret; + } + sdiodev->oob_irq_requested = true; + spin_lock_init(&sdiodev->irq_en_lock); + spin_lock_irqsave(&sdiodev->irq_en_lock, flags); + sdiodev->irq_en = true; + spin_unlock_irqrestore(&sdiodev->irq_en_lock, flags); + + ret = enable_irq_wake(sdiodev->pdata->oob_irq_nr); + if (ret != 0) { + brcmf_err("enable_irq_wake failed %d\n", ret); + return ret; + } + sdiodev->irq_wake = true; + + sdio_claim_host(sdiodev->func[1]); + + /* must configure SDIO_CCCR_IENx to enable irq */ + data = brcmf_sdiod_regrb(sdiodev, SDIO_CCCR_IENx, &ret); + data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1; + brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret); + + /* redirect, configure and enable io for interrupt signal */ + data = SDIO_SEPINT_MASK | SDIO_SEPINT_OE; + if (sdiodev->pdata->oob_irq_flags & IRQF_TRIGGER_HIGH) + data |= SDIO_SEPINT_ACT_HI; + brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, data, &ret); + + sdio_release_host(sdiodev->func[1]); + } else { + brcmf_dbg(SDIO, "Entering\n"); + sdio_claim_host(sdiodev->func[1]); + sdio_claim_irq(sdiodev->func[1], brcmf_sdiod_ib_irqhandler); + sdio_claim_irq(sdiodev->func[2], brcmf_sdiod_dummy_irqhandler); + sdio_release_host(sdiodev->func[1]); + } + + return 0; +} + +int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev) +{ + brcmf_dbg(SDIO, "Entering\n"); + + if ((sdiodev->pdata) && (sdiodev->pdata->oob_irq_supported)) { + sdio_claim_host(sdiodev->func[1]); + brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL); + brcmf_sdiod_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL); + sdio_release_host(sdiodev->func[1]); + + if (sdiodev->oob_irq_requested) { + sdiodev->oob_irq_requested = false; + if (sdiodev->irq_wake) { + disable_irq_wake(sdiodev->pdata->oob_irq_nr); + sdiodev->irq_wake = false; + } + free_irq(sdiodev->pdata->oob_irq_nr, + &sdiodev->func[1]->dev); + sdiodev->irq_en = false; + } + } else { + sdio_claim_host(sdiodev->func[1]); + sdio_release_irq(sdiodev->func[2]); + sdio_release_irq(sdiodev->func[1]); + sdio_release_host(sdiodev->func[1]); + } + + return 0; +} + +static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func, + uint regaddr, u8 byte) +{ + int err_ret; + + /* + * Can only directly write to some F0 registers. + * Handle CCCR_IENx and CCCR_ABORT command + * as a special case. + */ + if ((regaddr == SDIO_CCCR_ABORT) || + (regaddr == SDIO_CCCR_IENx)) + sdio_writeb(func, byte, regaddr, &err_ret); + else + sdio_f0_writeb(func, byte, regaddr, &err_ret); + + return err_ret; +} + +static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn, + u32 addr, u8 regsz, void *data, bool write) +{ + struct sdio_func *func; + int ret; + + brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n", + write, fn, addr, regsz); + + brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_word_wait); + if (brcmf_sdiod_pm_resume_error(sdiodev)) + return -EIO; + + /* only allow byte access on F0 */ + if (WARN_ON(regsz > 1 && !fn)) + return -EINVAL; + func = sdiodev->func[fn]; + + switch (regsz) { + case sizeof(u8): + if (write) { + if (fn) + sdio_writeb(func, *(u8 *)data, addr, &ret); + else + ret = brcmf_sdiod_f0_writeb(func, addr, + *(u8 *)data); + } else { + if (fn) + *(u8 *)data = sdio_readb(func, addr, &ret); + else + *(u8 *)data = sdio_f0_readb(func, addr, &ret); + } + break; + case sizeof(u16): + if (write) + sdio_writew(func, *(u16 *)data, addr, &ret); + else + *(u16 *)data = sdio_readw(func, addr, &ret); + break; + case sizeof(u32): + if (write) + sdio_writel(func, *(u32 *)data, addr, &ret); + else + *(u32 *)data = sdio_readl(func, addr, &ret); + break; + default: + brcmf_err("invalid size: %d\n", regsz); + break; + } + + if (ret) + brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n", + write ? "write" : "read", fn, addr, ret); + + return ret; +} + +static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr, + u8 regsz, void *data, bool write) +{ + u8 func; + s32 retry = 0; + int ret; + + if (sdiodev->bus_if->state == BRCMF_BUS_NOMEDIUM) + return -ENOMEDIUM; + + /* + * figure out how to read the register based on address range + * 0x00 ~ 0x7FF: function 0 CCCR and FBR + * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers + * The rest: function 1 silicon backplane core registers + */ + if ((addr & ~REG_F0_REG_MASK) == 0) + func = SDIO_FUNC_0; + else + func = SDIO_FUNC_1; + + do { + if (!write) + memset(data, 0, regsz); + /* for retry wait for 1 ms till bus get settled down */ + if (retry) + usleep_range(1000, 2000); + ret = brcmf_sdiod_request_data(sdiodev, func, addr, regsz, + data, write); + } while (ret != 0 && ret != -ENOMEDIUM && + retry++ < SDIOH_API_ACCESS_RETRY_LIMIT); + + if (ret == -ENOMEDIUM) + brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_NOMEDIUM); + else if (ret != 0) { + /* + * SleepCSR register access can fail when + * waking up the device so reduce this noise + * in the logs. + */ + if (addr != SBSDIO_FUNC1_SLEEPCSR) + brcmf_err("failed to %s data F%d@0x%05x, err: %d\n", + write ? "write" : "read", func, addr, ret); + else + brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n", + write ? "write" : "read", func, addr, ret); + } + return ret; +} + +static int +brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address) +{ + int err = 0, i; + u8 addr[3]; + + if (sdiodev->bus_if->state == BRCMF_BUS_NOMEDIUM) + return -ENOMEDIUM; + + addr[0] = (address >> 8) & SBSDIO_SBADDRLOW_MASK; + addr[1] = (address >> 16) & SBSDIO_SBADDRMID_MASK; + addr[2] = (address >> 24) & SBSDIO_SBADDRHIGH_MASK; + + for (i = 0; i < 3; i++) { + err = brcmf_sdiod_regrw_helper(sdiodev, + SBSDIO_FUNC1_SBADDRLOW + i, + sizeof(u8), &addr[i], true); + if (err) { + brcmf_err("failed at addr: 0x%0x\n", + SBSDIO_FUNC1_SBADDRLOW + i); + break; + } + } + + return err; +} + +static int +brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr) +{ + uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK; + int err = 0; + + if (bar0 != sdiodev->sbwad) { + err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0); + if (err) + return err; + + sdiodev->sbwad = bar0; + } + + *addr &= SBSDIO_SB_OFT_ADDR_MASK; + + if (width == 4) + *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; + + return 0; +} + +u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) +{ + u8 data; + int retval; + + brcmf_dbg(SDIO, "addr:0x%08x\n", addr); + retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, + false); + brcmf_dbg(SDIO, "data:0x%02x\n", data); + + if (ret) + *ret = retval; + + return data; +} + +u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) +{ + u32 data; + int retval; + + brcmf_dbg(SDIO, "addr:0x%08x\n", addr); + retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr); + if (retval) + goto done; + retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, + false); + brcmf_dbg(SDIO, "data:0x%08x\n", data); + +done: + if (ret) + *ret = retval; + + return data; +} + +void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr, + u8 data, int *ret) +{ + int retval; + + brcmf_dbg(SDIO, "addr:0x%08x, data:0x%02x\n", addr, data); + retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, + true); + if (ret) + *ret = retval; +} + +void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr, + u32 data, int *ret) +{ + int retval; + + brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data); + retval = brcmf_sdiod_addrprep(sdiodev, sizeof(data), &addr); + if (retval) + goto done; + retval = brcmf_sdiod_regrw_helper(sdiodev, addr, sizeof(data), &data, + true); + +done: + if (ret) + *ret = retval; +} + +static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn, + bool write, u32 addr, struct sk_buff *pkt) +{ + unsigned int req_sz; + int err; + + brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait); + if (brcmf_sdiod_pm_resume_error(sdiodev)) + return -EIO; + + /* Single skb use the standard mmc interface */ + req_sz = pkt->len + 3; + req_sz &= (uint)~3; + + if (write) + err = sdio_memcpy_toio(sdiodev->func[fn], addr, + ((u8 *)(pkt->data)), req_sz); + else if (fn == 1) + err = sdio_memcpy_fromio(sdiodev->func[fn], ((u8 *)(pkt->data)), + addr, req_sz); + else + /* function 2 read is FIFO operation */ + err = sdio_readsb(sdiodev->func[fn], ((u8 *)(pkt->data)), addr, + req_sz); + if (err == -ENOMEDIUM) + brcmf_bus_change_state(sdiodev->bus_if, BRCMF_BUS_NOMEDIUM); + return err; +} + +/** + * brcmf_sdiod_sglist_rw - SDIO interface function for block data access + * @sdiodev: brcmfmac sdio device + * @fn: SDIO function number + * @write: direction flag + * @addr: dongle memory address as source/destination + * @pkt: skb pointer + * + * This function takes the respbonsibility as the interface function to MMC + * stack for block data access. It assumes that the skb passed down by the + * caller has already been padded and aligned. + */ +static int brcmf_sdiod_sglist_rw(struct brcmf_sdio_dev *sdiodev, uint fn, + bool write, u32 addr, + struct sk_buff_head *pktlist) +{ + unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset; + unsigned int max_req_sz, orig_offset, dst_offset; + unsigned short max_seg_cnt, seg_sz; + unsigned char *pkt_data, *orig_data, *dst_data; + struct sk_buff *pkt_next = NULL, *local_pkt_next; + struct sk_buff_head local_list, *target_list; + struct mmc_request mmc_req; + struct mmc_command mmc_cmd; + struct mmc_data mmc_dat; + struct scatterlist *sgl; + int ret = 0; + + if (!pktlist->qlen) + return -EINVAL; + + brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait); + if (brcmf_sdiod_pm_resume_error(sdiodev)) + return -EIO; + + target_list = pktlist; + /* for host with broken sg support, prepare a page aligned list */ + __skb_queue_head_init(&local_list); + if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) { + req_sz = 0; + skb_queue_walk(pktlist, pkt_next) + req_sz += pkt_next->len; + req_sz = ALIGN(req_sz, sdiodev->func[fn]->cur_blksize); + while (req_sz > PAGE_SIZE) { + pkt_next = brcmu_pkt_buf_get_skb(PAGE_SIZE); + if (pkt_next == NULL) { + ret = -ENOMEM; + goto exit; + } + __skb_queue_tail(&local_list, pkt_next); + req_sz -= PAGE_SIZE; + } + pkt_next = brcmu_pkt_buf_get_skb(req_sz); + if (pkt_next == NULL) { + ret = -ENOMEM; + goto exit; + } + __skb_queue_tail(&local_list, pkt_next); + target_list = &local_list; + } + + func_blk_sz = sdiodev->func[fn]->cur_blksize; + max_req_sz = sdiodev->max_request_size; + max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count, + target_list->qlen); + seg_sz = target_list->qlen; + pkt_offset = 0; + pkt_next = target_list->next; + + memset(&mmc_req, 0, sizeof(struct mmc_request)); + memset(&mmc_cmd, 0, sizeof(struct mmc_command)); + memset(&mmc_dat, 0, sizeof(struct mmc_data)); + + mmc_dat.sg = sdiodev->sgtable.sgl; + mmc_dat.blksz = func_blk_sz; + mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ; + mmc_cmd.opcode = SD_IO_RW_EXTENDED; + mmc_cmd.arg = write ? 1<<31 : 0; /* write flag */ + mmc_cmd.arg |= (fn & 0x7) << 28; /* SDIO func num */ + mmc_cmd.arg |= 1<<27; /* block mode */ + /* for function 1 the addr will be incremented */ + mmc_cmd.arg |= (fn == 1) ? 1<<26 : 0; + mmc_cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC; + mmc_req.cmd = &mmc_cmd; + mmc_req.data = &mmc_dat; + + while (seg_sz) { + req_sz = 0; + sg_cnt = 0; + sgl = sdiodev->sgtable.sgl; + /* prep sg table */ + while (pkt_next != (struct sk_buff *)target_list) { + pkt_data = pkt_next->data + pkt_offset; + sg_data_sz = pkt_next->len - pkt_offset; + if (sg_data_sz > sdiodev->max_segment_size) + sg_data_sz = sdiodev->max_segment_size; + if (sg_data_sz > max_req_sz - req_sz) + sg_data_sz = max_req_sz - req_sz; + + sg_set_buf(sgl, pkt_data, sg_data_sz); + + sg_cnt++; + sgl = sg_next(sgl); + req_sz += sg_data_sz; + pkt_offset += sg_data_sz; + if (pkt_offset == pkt_next->len) { + pkt_offset = 0; + pkt_next = pkt_next->next; + } + + if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt) + break; + } + seg_sz -= sg_cnt; + + if (req_sz % func_blk_sz != 0) { + brcmf_err("sg request length %u is not %u aligned\n", + req_sz, func_blk_sz); + ret = -ENOTBLK; + goto exit; + } + + mmc_dat.sg_len = sg_cnt; + mmc_dat.blocks = req_sz / func_blk_sz; + mmc_cmd.arg |= (addr & 0x1FFFF) << 9; /* address */ + mmc_cmd.arg |= mmc_dat.blocks & 0x1FF; /* block count */ + /* incrementing addr for function 1 */ + if (fn == 1) + addr += req_sz; + + mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card); + mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req); + + ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error; + if (ret == -ENOMEDIUM) { + brcmf_bus_change_state(sdiodev->bus_if, + BRCMF_BUS_NOMEDIUM); + break; + } else if (ret != 0) { + brcmf_err("CMD53 sg block %s failed %d\n", + write ? "write" : "read", ret); + ret = -EIO; + break; + } + } + + if (sdiodev->pdata && sdiodev->pdata->broken_sg_support && !write) { + local_pkt_next = local_list.next; + orig_offset = 0; + skb_queue_walk(pktlist, pkt_next) { + dst_offset = 0; + do { + req_sz = local_pkt_next->len - orig_offset; + req_sz = min_t(uint, pkt_next->len - dst_offset, + req_sz); + orig_data = local_pkt_next->data + orig_offset; + dst_data = pkt_next->data + dst_offset; + memcpy(dst_data, orig_data, req_sz); + orig_offset += req_sz; + dst_offset += req_sz; + if (orig_offset == local_pkt_next->len) { + orig_offset = 0; + local_pkt_next = local_pkt_next->next; + } + if (dst_offset == pkt_next->len) + break; + } while (!skb_queue_empty(&local_list)); + } + } + +exit: + sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents); + while ((pkt_next = __skb_dequeue(&local_list)) != NULL) + brcmu_pkt_buf_free_skb(pkt_next); + + return ret; +} + +int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) +{ + struct sk_buff *mypkt; + int err; + + mypkt = brcmu_pkt_buf_get_skb(nbytes); + if (!mypkt) { + brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", + nbytes); + return -EIO; + } + + err = brcmf_sdiod_recv_pkt(sdiodev, mypkt); + if (!err) + memcpy(buf, mypkt->data, nbytes); + + brcmu_pkt_buf_free_skb(mypkt); + return err; +} + +int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt) +{ + u32 addr = sdiodev->sbwad; + int err = 0; + + brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len); + + err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); + if (err) + goto done; + + err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt); + +done: + return err; +} + +int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev, + struct sk_buff_head *pktq, uint totlen) +{ + struct sk_buff *glom_skb; + struct sk_buff *skb; + u32 addr = sdiodev->sbwad; + int err = 0; + + brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", + addr, pktq->qlen); + + err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); + if (err) + goto done; + + if (pktq->qlen == 1) + err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, + pktq->next); + else if (!sdiodev->sg_support) { + glom_skb = brcmu_pkt_buf_get_skb(totlen); + if (!glom_skb) + return -ENOMEM; + err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, + glom_skb); + if (err) + goto done; + + skb_queue_walk(pktq, skb) { + memcpy(skb->data, glom_skb->data, skb->len); + skb_pull(glom_skb, skb->len); + } + } else + err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, false, addr, + pktq); + +done: + return err; +} + +int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) +{ + struct sk_buff *mypkt; + u32 addr = sdiodev->sbwad; + int err; + + mypkt = brcmu_pkt_buf_get_skb(nbytes); + if (!mypkt) { + brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", + nbytes); + return -EIO; + } + + memcpy(mypkt->data, buf, nbytes); + + err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); + + if (!err) + err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, addr, + mypkt); + + brcmu_pkt_buf_free_skb(mypkt); + return err; + +} + +int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev, + struct sk_buff_head *pktq) +{ + struct sk_buff *skb; + u32 addr = sdiodev->sbwad; + int err; + + brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pktq->qlen); + + err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); + if (err) + return err; + + if (pktq->qlen == 1 || !sdiodev->sg_support) + skb_queue_walk(pktq, skb) { + err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, true, + addr, skb); + if (err) + break; + } + else + err = brcmf_sdiod_sglist_rw(sdiodev, SDIO_FUNC_2, true, addr, + pktq); + + return err; +} + +int +brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address, + u8 *data, uint size) +{ + int bcmerror = 0; + struct sk_buff *pkt; + u32 sdaddr; + uint dsize; + + dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); + pkt = dev_alloc_skb(dsize); + if (!pkt) { + brcmf_err("dev_alloc_skb failed: len %d\n", dsize); + return -EIO; + } + pkt->priority = 0; + + /* Determine initial transfer parameters */ + sdaddr = address & SBSDIO_SB_OFT_ADDR_MASK; + if ((sdaddr + size) & SBSDIO_SBWINDOW_MASK) + dsize = (SBSDIO_SB_OFT_ADDR_LIMIT - sdaddr); + else + dsize = size; + + sdio_claim_host(sdiodev->func[1]); + + /* Do the transfer(s) */ + while (size) { + /* Set the backplane window to include the start address */ + bcmerror = brcmf_sdiod_set_sbaddr_window(sdiodev, address); + if (bcmerror) + break; + + brcmf_dbg(SDIO, "%s %d bytes at offset 0x%08x in window 0x%08x\n", + write ? "write" : "read", dsize, + sdaddr, address & SBSDIO_SBWINDOW_MASK); + + sdaddr &= SBSDIO_SB_OFT_ADDR_MASK; + sdaddr |= SBSDIO_SB_ACCESS_2_4B_FLAG; + + skb_put(pkt, dsize); + if (write) + memcpy(pkt->data, data, dsize); + bcmerror = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_1, write, + sdaddr, pkt); + if (bcmerror) { + brcmf_err("membytes transfer failed\n"); + break; + } + if (!write) + memcpy(data, pkt->data, dsize); + skb_trim(pkt, 0); + + /* Adjust for next transfer (if any) */ + size -= dsize; + if (size) { + data += dsize; + address += dsize; + sdaddr = 0; + dsize = min_t(uint, SBSDIO_SB_OFT_ADDR_LIMIT, size); + } + } + + dev_kfree_skb(pkt); + + /* Return the window to backplane enumeration space for core access */ + if (brcmf_sdiod_set_sbaddr_window(sdiodev, sdiodev->sbwad)) + brcmf_err("FAILED to set window back to 0x%x\n", + sdiodev->sbwad); + + sdio_release_host(sdiodev->func[1]); + + return bcmerror; +} + +int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn) +{ + char t_func = (char)fn; + brcmf_dbg(SDIO, "Enter\n"); + + /* issue abort cmd52 command through F0 */ + brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT, + sizeof(t_func), &t_func, true); + + brcmf_dbg(SDIO, "Exit\n"); + return 0; +} + +static void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev) +{ + uint nents; + int err; + + if (!sdiodev->sg_support) + return; + + nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE, brcmf_sdiod_txglomsz); + nents += (nents >> 4) + 1; + + WARN_ON(nents > sdiodev->max_segment_count); + + brcmf_dbg(TRACE, "nents=%d\n", nents); + err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL); + if (err < 0) { + brcmf_err("allocation failed: disable scatter-gather"); + sdiodev->sg_support = false; + } + + sdiodev->txglomsz = brcmf_sdiod_txglomsz; +} + +static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev) +{ + if (sdiodev->bus) { + brcmf_sdio_remove(sdiodev->bus); + sdiodev->bus = NULL; + } + + /* Disable Function 2 */ + sdio_claim_host(sdiodev->func[2]); + sdio_disable_func(sdiodev->func[2]); + sdio_release_host(sdiodev->func[2]); + + /* Disable Function 1 */ + sdio_claim_host(sdiodev->func[1]); + sdio_disable_func(sdiodev->func[1]); + sdio_release_host(sdiodev->func[1]); + + sg_free_table(&sdiodev->sgtable); + sdiodev->sbwad = 0; + + return 0; +} + +static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev) +{ + struct sdio_func *func; + struct mmc_host *host; + uint max_blocks; + int ret = 0; + + sdiodev->num_funcs = 2; + + sdio_claim_host(sdiodev->func[1]); + + ret = sdio_set_block_size(sdiodev->func[1], SDIO_FUNC1_BLOCKSIZE); + if (ret) { + brcmf_err("Failed to set F1 blocksize\n"); + sdio_release_host(sdiodev->func[1]); + goto out; + } + ret = sdio_set_block_size(sdiodev->func[2], SDIO_FUNC2_BLOCKSIZE); + if (ret) { + brcmf_err("Failed to set F2 blocksize\n"); + sdio_release_host(sdiodev->func[1]); + goto out; + } + + /* increase F2 timeout */ + sdiodev->func[2]->enable_timeout = SDIO_WAIT_F2RDY; + + /* Enable Function 1 */ + ret = sdio_enable_func(sdiodev->func[1]); + sdio_release_host(sdiodev->func[1]); + if (ret) { + brcmf_err("Failed to enable F1: err=%d\n", ret); + goto out; + } + + /* + * determine host related variables after brcmf_sdiod_probe() + * as func->cur_blksize is properly set and F2 init has been + * completed successfully. + */ + func = sdiodev->func[2]; + host = func->card->host; + sdiodev->sg_support = host->max_segs > 1; + max_blocks = min_t(uint, host->max_blk_count, 511u); + sdiodev->max_request_size = min_t(uint, host->max_req_size, + max_blocks * func->cur_blksize); + sdiodev->max_segment_count = min_t(uint, host->max_segs, + SG_MAX_SINGLE_ALLOC); + sdiodev->max_segment_size = host->max_seg_size; + + /* allocate scatter-gather table. sg support + * will be disabled upon allocation failure. + */ + brcmf_sdiod_sgtable_alloc(sdiodev); + + /* try to attach to the target device */ + sdiodev->bus = brcmf_sdio_probe(sdiodev); + if (!sdiodev->bus) { + ret = -ENODEV; + goto out; + } + +out: + if (ret) + brcmf_sdiod_remove(sdiodev); + + return ret; +} + +/* devices we support, null terminated */ +static const struct sdio_device_id brcmf_sdmmc_ids[] = { + {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43143)}, + {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43241)}, + {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4329)}, + {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4330)}, + {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4334)}, + {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_43362)}, + {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, + SDIO_DEVICE_ID_BROADCOM_4335_4339)}, + {SDIO_DEVICE(SDIO_VENDOR_ID_BROADCOM, SDIO_DEVICE_ID_BROADCOM_4354)}, + { /* end: all zeroes */ }, +}; +MODULE_DEVICE_TABLE(sdio, brcmf_sdmmc_ids); + +static struct brcmfmac_sdio_platform_data *brcmfmac_sdio_pdata; + + +static int brcmf_ops_sdio_probe(struct sdio_func *func, + const struct sdio_device_id *id) +{ + int err; + struct brcmf_sdio_dev *sdiodev; + struct brcmf_bus *bus_if; + + brcmf_dbg(SDIO, "Enter\n"); + brcmf_dbg(SDIO, "Class=%x\n", func->class); + brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); + brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); + brcmf_dbg(SDIO, "Function#: %d\n", func->num); + + /* Consume func num 1 but dont do anything with it. */ + if (func->num == 1) + return 0; + + /* Ignore anything but func 2 */ + if (func->num != 2) + return -ENODEV; + + bus_if = kzalloc(sizeof(struct brcmf_bus), GFP_KERNEL); + if (!bus_if) + return -ENOMEM; + sdiodev = kzalloc(sizeof(struct brcmf_sdio_dev), GFP_KERNEL); + if (!sdiodev) { + kfree(bus_if); + return -ENOMEM; + } + + /* store refs to functions used. mmc_card does + * not hold the F0 function pointer. + */ + sdiodev->func[0] = kmemdup(func, sizeof(*func), GFP_KERNEL); + sdiodev->func[0]->num = 0; + sdiodev->func[1] = func->card->sdio_func[0]; + sdiodev->func[2] = func; + + sdiodev->bus_if = bus_if; + bus_if->bus_priv.sdio = sdiodev; + bus_if->proto_type = BRCMF_PROTO_BCDC; + dev_set_drvdata(&func->dev, bus_if); + dev_set_drvdata(&sdiodev->func[1]->dev, bus_if); + sdiodev->dev = &sdiodev->func[1]->dev; + sdiodev->pdata = brcmfmac_sdio_pdata; + + atomic_set(&sdiodev->suspend, false); + init_waitqueue_head(&sdiodev->request_word_wait); + init_waitqueue_head(&sdiodev->request_buffer_wait); + + brcmf_dbg(SDIO, "F2 found, calling brcmf_sdiod_probe...\n"); + err = brcmf_sdiod_probe(sdiodev); + if (err) { + brcmf_err("F2 error, probe failed %d...\n", err); + goto fail; + } + + brcmf_dbg(SDIO, "F2 init completed...\n"); + return 0; + +fail: + dev_set_drvdata(&func->dev, NULL); + dev_set_drvdata(&sdiodev->func[1]->dev, NULL); + kfree(sdiodev->func[0]); + kfree(sdiodev); + kfree(bus_if); + return err; +} + +static void brcmf_ops_sdio_remove(struct sdio_func *func) +{ + struct brcmf_bus *bus_if; + struct brcmf_sdio_dev *sdiodev; + + brcmf_dbg(SDIO, "Enter\n"); + brcmf_dbg(SDIO, "sdio vendor ID: 0x%04x\n", func->vendor); + brcmf_dbg(SDIO, "sdio device ID: 0x%04x\n", func->device); + brcmf_dbg(SDIO, "Function: %d\n", func->num); + + if (func->num != 1 && func->num != 2) + return; + + bus_if = dev_get_drvdata(&func->dev); + if (bus_if) { + sdiodev = bus_if->bus_priv.sdio; + brcmf_sdiod_remove(sdiodev); + + dev_set_drvdata(&sdiodev->func[1]->dev, NULL); + dev_set_drvdata(&sdiodev->func[2]->dev, NULL); + + kfree(bus_if); + kfree(sdiodev->func[0]); + kfree(sdiodev); + } + + brcmf_dbg(SDIO, "Exit\n"); +} + +#ifdef CONFIG_PM_SLEEP +static int brcmf_ops_sdio_suspend(struct device *dev) +{ + mmc_pm_flag_t sdio_flags; + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; + int ret = 0; + + brcmf_dbg(SDIO, "Enter\n"); + + sdio_flags = sdio_get_host_pm_caps(sdiodev->func[1]); + if (!(sdio_flags & MMC_PM_KEEP_POWER)) { + brcmf_err("Host can't keep power while suspended\n"); + return -EINVAL; + } + + atomic_set(&sdiodev->suspend, true); + + ret = sdio_set_host_pm_flags(sdiodev->func[1], MMC_PM_KEEP_POWER); + if (ret) { + brcmf_err("Failed to set pm_flags\n"); + atomic_set(&sdiodev->suspend, false); + return ret; + } + + brcmf_sdio_wd_timer(sdiodev->bus, 0); + + return ret; +} + +static int brcmf_ops_sdio_resume(struct device *dev) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; + + brcmf_dbg(SDIO, "Enter\n"); + brcmf_sdio_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS); + atomic_set(&sdiodev->suspend, false); + return 0; +} + +static const struct dev_pm_ops brcmf_sdio_pm_ops = { + .suspend = brcmf_ops_sdio_suspend, + .resume = brcmf_ops_sdio_resume, +}; +#endif /* CONFIG_PM_SLEEP */ + +static struct sdio_driver brcmf_sdmmc_driver = { + .probe = brcmf_ops_sdio_probe, + .remove = brcmf_ops_sdio_remove, + .name = BRCMFMAC_SDIO_PDATA_NAME, + .id_table = brcmf_sdmmc_ids, + .drv = { + .owner = THIS_MODULE, +#ifdef CONFIG_PM_SLEEP + .pm = &brcmf_sdio_pm_ops, +#endif /* CONFIG_PM_SLEEP */ + }, +}; + +static int __init brcmf_sdio_pd_probe(struct platform_device *pdev) +{ + brcmf_dbg(SDIO, "Enter\n"); + + brcmfmac_sdio_pdata = dev_get_platdata(&pdev->dev); + + if (brcmfmac_sdio_pdata->power_on) + brcmfmac_sdio_pdata->power_on(); + + return 0; +} + +static int brcmf_sdio_pd_remove(struct platform_device *pdev) +{ + brcmf_dbg(SDIO, "Enter\n"); + + if (brcmfmac_sdio_pdata->power_off) + brcmfmac_sdio_pdata->power_off(); + + sdio_unregister_driver(&brcmf_sdmmc_driver); + + return 0; +} + +static struct platform_driver brcmf_sdio_pd = { + .remove = brcmf_sdio_pd_remove, + .driver = { + .name = BRCMFMAC_SDIO_PDATA_NAME, + .owner = THIS_MODULE, + } +}; + +void brcmf_sdio_register(void) +{ + int ret; + + ret = sdio_register_driver(&brcmf_sdmmc_driver); + if (ret) + brcmf_err("sdio_register_driver failed: %d\n", ret); +} + +void brcmf_sdio_exit(void) +{ + brcmf_dbg(SDIO, "Enter\n"); + + if (brcmfmac_sdio_pdata) + platform_driver_unregister(&brcmf_sdio_pd); + else + sdio_unregister_driver(&brcmf_sdmmc_driver); +} + +void __init brcmf_sdio_init(void) +{ + int ret; + + brcmf_dbg(SDIO, "Enter\n"); + + ret = platform_driver_probe(&brcmf_sdio_pd, brcmf_sdio_pd_probe); + if (ret == -ENODEV) + brcmf_dbg(SDIO, "No platform data available.\n"); +} diff --git a/drivers/net/wireless/brcm80211/brcmfmac/btcoex.c b/drivers/net/wireless/brcm80211/brcmfmac/btcoex.c new file mode 100644 index 00000000000..0cb591b050b --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/btcoex.c @@ -0,0 +1,497 @@ +/* + * Copyright (c) 2013 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#include <linux/slab.h> +#include <linux/netdevice.h> +#include <net/cfg80211.h> + +#include <brcmu_wifi.h> +#include <brcmu_utils.h> +#include <defs.h> +#include <dhd.h> +#include <dhd_dbg.h> +#include "fwil.h" +#include "fwil_types.h" +#include "btcoex.h" +#include "p2p.h" +#include "wl_cfg80211.h" + +/* T1 start SCO/eSCO priority suppression */ +#define BRCMF_BTCOEX_OPPR_WIN_TIME 2000 + +/* BT registers values during DHCP */ +#define BRCMF_BT_DHCP_REG50 0x8022 +#define BRCMF_BT_DHCP_REG51 0 +#define BRCMF_BT_DHCP_REG64 0 +#define BRCMF_BT_DHCP_REG65 0 +#define BRCMF_BT_DHCP_REG71 0 +#define BRCMF_BT_DHCP_REG66 0x2710 +#define BRCMF_BT_DHCP_REG41 0x33 +#define BRCMF_BT_DHCP_REG68 0x190 + +/* number of samples for SCO detection */ +#define BRCMF_BT_SCO_SAMPLES 12 + +/** +* enum brcmf_btcoex_state - BT coex DHCP state machine states +* @BRCMF_BT_DHCP_IDLE: DCHP is idle +* @BRCMF_BT_DHCP_START: DHCP started, wait before +* boosting wifi priority +* @BRCMF_BT_DHCP_OPPR_WIN: graceful DHCP opportunity ended, +* boost wifi priority +* @BRCMF_BT_DHCP_FLAG_FORCE_TIMEOUT: wifi priority boost end, +* restore defaults +*/ +enum brcmf_btcoex_state { + BRCMF_BT_DHCP_IDLE, + BRCMF_BT_DHCP_START, + BRCMF_BT_DHCP_OPPR_WIN, + BRCMF_BT_DHCP_FLAG_FORCE_TIMEOUT +}; + +/** + * struct brcmf_btcoex_info - BT coex related information + * @vif: interface for which request was done. + * @timer: timer for DHCP state machine + * @timeout: configured timeout. + * @timer_on: DHCP timer active + * @dhcp_done: DHCP finished before T1/T2 timer expiration + * @bt_state: DHCP state machine state + * @work: DHCP state machine work + * @cfg: driver private data for cfg80211 interface + * @reg66: saved value of btc_params 66 + * @reg41: saved value of btc_params 41 + * @reg68: saved value of btc_params 68 + * @saved_regs_part1: flag indicating regs 66,41,68 + * have been saved + * @reg51: saved value of btc_params 51 + * @reg64: saved value of btc_params 64 + * @reg65: saved value of btc_params 65 + * @reg71: saved value of btc_params 71 + * @saved_regs_part1: flag indicating regs 50,51,64,65,71 + * have been saved + */ +struct brcmf_btcoex_info { + struct brcmf_cfg80211_vif *vif; + struct timer_list timer; + u16 timeout; + bool timer_on; + bool dhcp_done; + enum brcmf_btcoex_state bt_state; + struct work_struct work; + struct brcmf_cfg80211_info *cfg; + u32 reg66; + u32 reg41; + u32 reg68; + bool saved_regs_part1; + u32 reg50; + u32 reg51; + u32 reg64; + u32 reg65; + u32 reg71; + bool saved_regs_part2; +}; + +/** + * brcmf_btcoex_params_write() - write btc_params firmware variable + * @ifp: interface + * @addr: btc_params register number + * @data: data to write + */ +static s32 brcmf_btcoex_params_write(struct brcmf_if *ifp, u32 addr, u32 data) +{ + struct { + __le32 addr; + __le32 data; + } reg_write; + + reg_write.addr = cpu_to_le32(addr); + reg_write.data = cpu_to_le32(data); + return brcmf_fil_iovar_data_set(ifp, "btc_params", + ®_write, sizeof(reg_write)); +} + +/** + * brcmf_btcoex_params_read() - read btc_params firmware variable + * @ifp: interface + * @addr: btc_params register number + * @data: read data + */ +static s32 brcmf_btcoex_params_read(struct brcmf_if *ifp, u32 addr, u32 *data) +{ + *data = addr; + + return brcmf_fil_iovar_int_get(ifp, "btc_params", data); +} + +/** + * brcmf_btcoex_boost_wifi() - control BT SCO/eSCO parameters + * @btci: BT coex info + * @trump_sco: + * true - set SCO/eSCO parameters for compatibility + * during DHCP window + * false - restore saved parameter values + * + * Enhanced BT COEX settings for eSCO compatibility during DHCP window + */ +static void brcmf_btcoex_boost_wifi(struct brcmf_btcoex_info *btci, + bool trump_sco) +{ + struct brcmf_if *ifp = btci->cfg->pub->iflist[0]; + + if (trump_sco && !btci->saved_regs_part2) { + /* this should reduce eSCO agressive + * retransmit w/o breaking it + */ + + /* save current */ + brcmf_dbg(TRACE, "new SCO/eSCO coex algo {save & override}\n"); + brcmf_btcoex_params_read(ifp, 50, &btci->reg50); + brcmf_btcoex_params_read(ifp, 51, &btci->reg51); + brcmf_btcoex_params_read(ifp, 64, &btci->reg64); + brcmf_btcoex_params_read(ifp, 65, &btci->reg65); + brcmf_btcoex_params_read(ifp, 71, &btci->reg71); + + btci->saved_regs_part2 = true; + brcmf_dbg(TRACE, + "saved bt_params[50,51,64,65,71]: 0x%x 0x%x 0x%x 0x%x 0x%x\n", + btci->reg50, btci->reg51, btci->reg64, + btci->reg65, btci->reg71); + + /* pacify the eSco */ + brcmf_btcoex_params_write(ifp, 50, BRCMF_BT_DHCP_REG50); + brcmf_btcoex_params_write(ifp, 51, BRCMF_BT_DHCP_REG51); + brcmf_btcoex_params_write(ifp, 64, BRCMF_BT_DHCP_REG64); + brcmf_btcoex_params_write(ifp, 65, BRCMF_BT_DHCP_REG65); + brcmf_btcoex_params_write(ifp, 71, BRCMF_BT_DHCP_REG71); + + } else if (btci->saved_regs_part2) { + /* restore previously saved bt params */ + brcmf_dbg(TRACE, "Do new SCO/eSCO coex algo {restore}\n"); + brcmf_btcoex_params_write(ifp, 50, btci->reg50); + brcmf_btcoex_params_write(ifp, 51, btci->reg51); + brcmf_btcoex_params_write(ifp, 64, btci->reg64); + brcmf_btcoex_params_write(ifp, 65, btci->reg65); + brcmf_btcoex_params_write(ifp, 71, btci->reg71); + + brcmf_dbg(TRACE, + "restored bt_params[50,51,64,65,71]: 0x%x 0x%x 0x%x 0x%x 0x%x\n", + btci->reg50, btci->reg51, btci->reg64, + btci->reg65, btci->reg71); + + btci->saved_regs_part2 = false; + } else { + brcmf_err("attempted to restore not saved BTCOEX params\n"); + } +} + +/** + * brcmf_btcoex_is_sco_active() - check if SCO/eSCO is active + * @ifp: interface + * + * return: true if SCO/eSCO session is active + */ +static bool brcmf_btcoex_is_sco_active(struct brcmf_if *ifp) +{ + int ioc_res = 0; + bool res = false; + int sco_id_cnt = 0; + u32 param27; + int i; + + for (i = 0; i < BRCMF_BT_SCO_SAMPLES; i++) { + ioc_res = brcmf_btcoex_params_read(ifp, 27, ¶m27); + + if (ioc_res < 0) { + brcmf_err("ioc read btc params error\n"); + break; + } + + brcmf_dbg(TRACE, "sample[%d], btc_params 27:%x\n", i, param27); + + if ((param27 & 0x6) == 2) { /* count both sco & esco */ + sco_id_cnt++; + } + + if (sco_id_cnt > 2) { + brcmf_dbg(TRACE, + "sco/esco detected, pkt id_cnt:%d samples:%d\n", + sco_id_cnt, i); + res = true; + break; + } + } + brcmf_dbg(TRACE, "exit: result=%d\n", res); + return res; +} + +/** + * btcmf_btcoex_save_part1() - save first step parameters. + */ +static void btcmf_btcoex_save_part1(struct brcmf_btcoex_info *btci) +{ + struct brcmf_if *ifp = btci->vif->ifp; + + if (!btci->saved_regs_part1) { + /* Retrieve and save original reg value */ + brcmf_btcoex_params_read(ifp, 66, &btci->reg66); + brcmf_btcoex_params_read(ifp, 41, &btci->reg41); + brcmf_btcoex_params_read(ifp, 68, &btci->reg68); + btci->saved_regs_part1 = true; + brcmf_dbg(TRACE, + "saved btc_params regs (66,41,68) 0x%x 0x%x 0x%x\n", + btci->reg66, btci->reg41, + btci->reg68); + } +} + +/** + * brcmf_btcoex_restore_part1() - restore first step parameters. + */ +static void brcmf_btcoex_restore_part1(struct brcmf_btcoex_info *btci) +{ + struct brcmf_if *ifp; + + if (btci->saved_regs_part1) { + btci->saved_regs_part1 = false; + ifp = btci->vif->ifp; + brcmf_btcoex_params_write(ifp, 66, btci->reg66); + brcmf_btcoex_params_write(ifp, 41, btci->reg41); + brcmf_btcoex_params_write(ifp, 68, btci->reg68); + brcmf_dbg(TRACE, + "restored btc_params regs {66,41,68} 0x%x 0x%x 0x%x\n", + btci->reg66, btci->reg41, + btci->reg68); + } +} + +/** + * brcmf_btcoex_timerfunc() - BT coex timer callback + */ +static void brcmf_btcoex_timerfunc(ulong data) +{ + struct brcmf_btcoex_info *bt_local = (struct brcmf_btcoex_info *)data; + brcmf_dbg(TRACE, "enter\n"); + + bt_local->timer_on = false; + schedule_work(&bt_local->work); +} + +/** + * brcmf_btcoex_handler() - BT coex state machine work handler + * @work: work + */ +static void brcmf_btcoex_handler(struct work_struct *work) +{ + struct brcmf_btcoex_info *btci; + btci = container_of(work, struct brcmf_btcoex_info, work); + if (btci->timer_on) { + btci->timer_on = false; + del_timer_sync(&btci->timer); + } + + switch (btci->bt_state) { + case BRCMF_BT_DHCP_START: + /* DHCP started provide OPPORTUNITY window + to get DHCP address + */ + brcmf_dbg(TRACE, "DHCP started\n"); + btci->bt_state = BRCMF_BT_DHCP_OPPR_WIN; + if (btci->timeout < BRCMF_BTCOEX_OPPR_WIN_TIME) { + mod_timer(&btci->timer, btci->timer.expires); + } else { + btci->timeout -= BRCMF_BTCOEX_OPPR_WIN_TIME; + mod_timer(&btci->timer, + jiffies + + msecs_to_jiffies(BRCMF_BTCOEX_OPPR_WIN_TIME)); + } + btci->timer_on = true; + break; + + case BRCMF_BT_DHCP_OPPR_WIN: + if (btci->dhcp_done) { + brcmf_dbg(TRACE, "DHCP done before T1 expiration\n"); + goto idle; + } + + /* DHCP is not over yet, start lowering BT priority */ + brcmf_dbg(TRACE, "DHCP T1:%d expired\n", + BRCMF_BTCOEX_OPPR_WIN_TIME); + brcmf_btcoex_boost_wifi(btci, true); + + btci->bt_state = BRCMF_BT_DHCP_FLAG_FORCE_TIMEOUT; + mod_timer(&btci->timer, + jiffies + msecs_to_jiffies(btci->timeout)); + btci->timer_on = true; + break; + + case BRCMF_BT_DHCP_FLAG_FORCE_TIMEOUT: + if (btci->dhcp_done) + brcmf_dbg(TRACE, "DHCP done before T2 expiration\n"); + else + brcmf_dbg(TRACE, "DHCP T2:%d expired\n", + BRCMF_BT_DHCP_FLAG_FORCE_TIMEOUT); + + goto idle; + + default: + brcmf_err("invalid state=%d !!!\n", btci->bt_state); + goto idle; + } + + return; + +idle: + btci->bt_state = BRCMF_BT_DHCP_IDLE; + btci->timer_on = false; + brcmf_btcoex_boost_wifi(btci, false); + cfg80211_crit_proto_stopped(&btci->vif->wdev, GFP_KERNEL); + brcmf_btcoex_restore_part1(btci); + btci->vif = NULL; +} + +/** + * brcmf_btcoex_attach() - initialize BT coex data + * @cfg: driver private cfg80211 data + * + * return: 0 on success + */ +int brcmf_btcoex_attach(struct brcmf_cfg80211_info *cfg) +{ + struct brcmf_btcoex_info *btci = NULL; + brcmf_dbg(TRACE, "enter\n"); + + btci = kmalloc(sizeof(struct brcmf_btcoex_info), GFP_KERNEL); + if (!btci) + return -ENOMEM; + + btci->bt_state = BRCMF_BT_DHCP_IDLE; + + /* Set up timer for BT */ + btci->timer_on = false; + btci->timeout = BRCMF_BTCOEX_OPPR_WIN_TIME; + init_timer(&btci->timer); + btci->timer.data = (ulong)btci; + btci->timer.function = brcmf_btcoex_timerfunc; + btci->cfg = cfg; + btci->saved_regs_part1 = false; + btci->saved_regs_part2 = false; + + INIT_WORK(&btci->work, brcmf_btcoex_handler); + + cfg->btcoex = btci; + return 0; +} + +/** + * brcmf_btcoex_detach - clean BT coex data + * @cfg: driver private cfg80211 data + */ +void brcmf_btcoex_detach(struct brcmf_cfg80211_info *cfg) +{ + brcmf_dbg(TRACE, "enter\n"); + + if (!cfg->btcoex) + return; + + if (cfg->btcoex->timer_on) { + cfg->btcoex->timer_on = false; + del_timer_sync(&cfg->btcoex->timer); + } + + cancel_work_sync(&cfg->btcoex->work); + + brcmf_btcoex_boost_wifi(cfg->btcoex, false); + brcmf_btcoex_restore_part1(cfg->btcoex); + + kfree(cfg->btcoex); + cfg->btcoex = NULL; +} + +static void brcmf_btcoex_dhcp_start(struct brcmf_btcoex_info *btci) +{ + struct brcmf_if *ifp = btci->vif->ifp; + + btcmf_btcoex_save_part1(btci); + /* set new regs values */ + brcmf_btcoex_params_write(ifp, 66, BRCMF_BT_DHCP_REG66); + brcmf_btcoex_params_write(ifp, 41, BRCMF_BT_DHCP_REG41); + brcmf_btcoex_params_write(ifp, 68, BRCMF_BT_DHCP_REG68); + btci->dhcp_done = false; + btci->bt_state = BRCMF_BT_DHCP_START; + schedule_work(&btci->work); + brcmf_dbg(TRACE, "enable BT DHCP Timer\n"); +} + +static void brcmf_btcoex_dhcp_end(struct brcmf_btcoex_info *btci) +{ + /* Stop any bt timer because DHCP session is done */ + btci->dhcp_done = true; + if (btci->timer_on) { + brcmf_dbg(TRACE, "disable BT DHCP Timer\n"); + btci->timer_on = false; + del_timer_sync(&btci->timer); + + /* schedule worker if transition to IDLE is needed */ + if (btci->bt_state != BRCMF_BT_DHCP_IDLE) { + brcmf_dbg(TRACE, "bt_state:%d\n", + btci->bt_state); + schedule_work(&btci->work); + } + } else { + /* Restore original values */ + brcmf_btcoex_restore_part1(btci); + } +} + +/** + * brcmf_btcoex_set_mode - set BT coex mode + * @cfg: driver private cfg80211 data + * @mode: Wifi-Bluetooth coexistence mode + * + * return: 0 on success + */ +int brcmf_btcoex_set_mode(struct brcmf_cfg80211_vif *vif, + enum brcmf_btcoex_mode mode, u16 duration) +{ + struct brcmf_cfg80211_info *cfg = wiphy_priv(vif->wdev.wiphy); + struct brcmf_btcoex_info *btci = cfg->btcoex; + struct brcmf_if *ifp = cfg->pub->iflist[0]; + + switch (mode) { + case BRCMF_BTCOEX_DISABLED: + brcmf_dbg(TRACE, "DHCP session starts\n"); + if (btci->bt_state != BRCMF_BT_DHCP_IDLE) + return -EBUSY; + /* Start BT timer only for SCO connection */ + if (brcmf_btcoex_is_sco_active(ifp)) { + btci->timeout = duration; + btci->vif = vif; + brcmf_btcoex_dhcp_start(btci); + } + break; + + case BRCMF_BTCOEX_ENABLED: + brcmf_dbg(TRACE, "DHCP session ends\n"); + if (btci->bt_state != BRCMF_BT_DHCP_IDLE && + vif == btci->vif) { + brcmf_btcoex_dhcp_end(btci); + } + break; + default: + brcmf_dbg(TRACE, "Unknown mode, ignored\n"); + } + return 0; +} diff --git a/drivers/net/wireless/brcm80211/brcmfmac/btcoex.h b/drivers/net/wireless/brcm80211/brcmfmac/btcoex.h new file mode 100644 index 00000000000..19647c68aa9 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/btcoex.h @@ -0,0 +1,29 @@ +/* + * Copyright (c) 2013 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#ifndef WL_BTCOEX_H_ +#define WL_BTCOEX_H_ + +enum brcmf_btcoex_mode { + BRCMF_BTCOEX_DISABLED, + BRCMF_BTCOEX_ENABLED +}; + +int brcmf_btcoex_attach(struct brcmf_cfg80211_info *cfg); +void brcmf_btcoex_detach(struct brcmf_cfg80211_info *cfg); +int brcmf_btcoex_set_mode(struct brcmf_cfg80211_vif *vif, + enum brcmf_btcoex_mode mode, u16 duration); + +#endif /* WL_BTCOEX_H_ */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/chip.c b/drivers/net/wireless/brcm80211/brcmfmac/chip.c new file mode 100644 index 00000000000..c7c9f15c0fe --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/chip.c @@ -0,0 +1,1035 @@ +/* + * Copyright (c) 2014 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/list.h> +#include <linux/ssb/ssb_regs.h> +#include <linux/bcma/bcma.h> +#include <linux/bcma/bcma_regs.h> + +#include <defs.h> +#include <soc.h> +#include <brcm_hw_ids.h> +#include <brcmu_utils.h> +#include <chipcommon.h> +#include "dhd_dbg.h" +#include "chip.h" + +/* SOC Interconnect types (aka chip types) */ +#define SOCI_SB 0 +#define SOCI_AI 1 + +/* PL-368 DMP definitions */ +#define DMP_DESC_TYPE_MSK 0x0000000F +#define DMP_DESC_EMPTY 0x00000000 +#define DMP_DESC_VALID 0x00000001 +#define DMP_DESC_COMPONENT 0x00000001 +#define DMP_DESC_MASTER_PORT 0x00000003 +#define DMP_DESC_ADDRESS 0x00000005 +#define DMP_DESC_ADDRSIZE_GT32 0x00000008 +#define DMP_DESC_EOT 0x0000000F + +#define DMP_COMP_DESIGNER 0xFFF00000 +#define DMP_COMP_DESIGNER_S 20 +#define DMP_COMP_PARTNUM 0x000FFF00 +#define DMP_COMP_PARTNUM_S 8 +#define DMP_COMP_CLASS 0x000000F0 +#define DMP_COMP_CLASS_S 4 +#define DMP_COMP_REVISION 0xFF000000 +#define DMP_COMP_REVISION_S 24 +#define DMP_COMP_NUM_SWRAP 0x00F80000 +#define DMP_COMP_NUM_SWRAP_S 19 +#define DMP_COMP_NUM_MWRAP 0x0007C000 +#define DMP_COMP_NUM_MWRAP_S 14 +#define DMP_COMP_NUM_SPORT 0x00003E00 +#define DMP_COMP_NUM_SPORT_S 9 +#define DMP_COMP_NUM_MPORT 0x000001F0 +#define DMP_COMP_NUM_MPORT_S 4 + +#define DMP_MASTER_PORT_UID 0x0000FF00 +#define DMP_MASTER_PORT_UID_S 8 +#define DMP_MASTER_PORT_NUM 0x000000F0 +#define DMP_MASTER_PORT_NUM_S 4 + +#define DMP_SLAVE_ADDR_BASE 0xFFFFF000 +#define DMP_SLAVE_ADDR_BASE_S 12 +#define DMP_SLAVE_PORT_NUM 0x00000F00 +#define DMP_SLAVE_PORT_NUM_S 8 +#define DMP_SLAVE_TYPE 0x000000C0 +#define DMP_SLAVE_TYPE_S 6 +#define DMP_SLAVE_TYPE_SLAVE 0 +#define DMP_SLAVE_TYPE_BRIDGE 1 +#define DMP_SLAVE_TYPE_SWRAP 2 +#define DMP_SLAVE_TYPE_MWRAP 3 +#define DMP_SLAVE_SIZE_TYPE 0x00000030 +#define DMP_SLAVE_SIZE_TYPE_S 4 +#define DMP_SLAVE_SIZE_4K 0 +#define DMP_SLAVE_SIZE_8K 1 +#define DMP_SLAVE_SIZE_16K 2 +#define DMP_SLAVE_SIZE_DESC 3 + +/* EROM CompIdentB */ +#define CIB_REV_MASK 0xff000000 +#define CIB_REV_SHIFT 24 + +/* ARM CR4 core specific control flag bits */ +#define ARMCR4_BCMA_IOCTL_CPUHALT 0x0020 + +/* D11 core specific control flag bits */ +#define D11_BCMA_IOCTL_PHYCLOCKEN 0x0004 +#define D11_BCMA_IOCTL_PHYRESET 0x0008 + +/* chip core base & ramsize */ +/* bcm4329 */ +/* SDIO device core, ID 0x829 */ +#define BCM4329_CORE_BUS_BASE 0x18011000 +/* internal memory core, ID 0x80e */ +#define BCM4329_CORE_SOCRAM_BASE 0x18003000 +/* ARM Cortex M3 core, ID 0x82a */ +#define BCM4329_CORE_ARM_BASE 0x18002000 +#define BCM4329_RAMSIZE 0x48000 + +/* bcm43143 */ +/* SDIO device core */ +#define BCM43143_CORE_BUS_BASE 0x18002000 +/* internal memory core */ +#define BCM43143_CORE_SOCRAM_BASE 0x18004000 +/* ARM Cortex M3 core, ID 0x82a */ +#define BCM43143_CORE_ARM_BASE 0x18003000 +#define BCM43143_RAMSIZE 0x70000 + +#define CORE_SB(base, field) \ + (base + SBCONFIGOFF + offsetof(struct sbconfig, field)) +#define SBCOREREV(sbidh) \ + ((((sbidh) & SSB_IDHIGH_RCHI) >> SSB_IDHIGH_RCHI_SHIFT) | \ + ((sbidh) & SSB_IDHIGH_RCLO)) + +struct sbconfig { + u32 PAD[2]; + u32 sbipsflag; /* initiator port ocp slave flag */ + u32 PAD[3]; + u32 sbtpsflag; /* target port ocp slave flag */ + u32 PAD[11]; + u32 sbtmerrloga; /* (sonics >= 2.3) */ + u32 PAD; + u32 sbtmerrlog; /* (sonics >= 2.3) */ + u32 PAD[3]; + u32 sbadmatch3; /* address match3 */ + u32 PAD; + u32 sbadmatch2; /* address match2 */ + u32 PAD; + u32 sbadmatch1; /* address match1 */ + u32 PAD[7]; + u32 sbimstate; /* initiator agent state */ + u32 sbintvec; /* interrupt mask */ + u32 sbtmstatelow; /* target state */ + u32 sbtmstatehigh; /* target state */ + u32 sbbwa0; /* bandwidth allocation table0 */ + u32 PAD; + u32 sbimconfiglow; /* initiator configuration */ + u32 sbimconfighigh; /* initiator configuration */ + u32 sbadmatch0; /* address match0 */ + u32 PAD; + u32 sbtmconfiglow; /* target configuration */ + u32 sbtmconfighigh; /* target configuration */ + u32 sbbconfig; /* broadcast configuration */ + u32 PAD; + u32 sbbstate; /* broadcast state */ + u32 PAD[3]; + u32 sbactcnfg; /* activate configuration */ + u32 PAD[3]; + u32 sbflagst; /* current sbflags */ + u32 PAD[3]; + u32 sbidlow; /* identification */ + u32 sbidhigh; /* identification */ +}; + +struct brcmf_core_priv { + struct brcmf_core pub; + u32 wrapbase; + struct list_head list; + struct brcmf_chip_priv *chip; +}; + +/* ARM CR4 core specific control flag bits */ +#define ARMCR4_BCMA_IOCTL_CPUHALT 0x0020 + +/* D11 core specific control flag bits */ +#define D11_BCMA_IOCTL_PHYCLOCKEN 0x0004 +#define D11_BCMA_IOCTL_PHYRESET 0x0008 + +struct brcmf_chip_priv { + struct brcmf_chip pub; + const struct brcmf_buscore_ops *ops; + void *ctx; + /* assured first core is chipcommon, second core is buscore */ + struct list_head cores; + u16 num_cores; + + bool (*iscoreup)(struct brcmf_core_priv *core); + void (*coredisable)(struct brcmf_core_priv *core, u32 prereset, + u32 reset); + void (*resetcore)(struct brcmf_core_priv *core, u32 prereset, u32 reset, + u32 postreset); +}; + +static void brcmf_chip_sb_corerev(struct brcmf_chip_priv *ci, + struct brcmf_core *core) +{ + u32 regdata; + + regdata = ci->ops->read32(ci->ctx, CORE_SB(core->base, sbidhigh)); + core->rev = SBCOREREV(regdata); +} + +static bool brcmf_chip_sb_iscoreup(struct brcmf_core_priv *core) +{ + struct brcmf_chip_priv *ci; + u32 regdata; + u32 address; + + ci = core->chip; + address = CORE_SB(core->pub.base, sbtmstatelow); + regdata = ci->ops->read32(ci->ctx, address); + regdata &= (SSB_TMSLOW_RESET | SSB_TMSLOW_REJECT | + SSB_IMSTATE_REJECT | SSB_TMSLOW_CLOCK); + return SSB_TMSLOW_CLOCK == regdata; +} + +static bool brcmf_chip_ai_iscoreup(struct brcmf_core_priv *core) +{ + struct brcmf_chip_priv *ci; + u32 regdata; + bool ret; + + ci = core->chip; + regdata = ci->ops->read32(ci->ctx, core->wrapbase + BCMA_IOCTL); + ret = (regdata & (BCMA_IOCTL_FGC | BCMA_IOCTL_CLK)) == BCMA_IOCTL_CLK; + + regdata = ci->ops->read32(ci->ctx, core->wrapbase + BCMA_RESET_CTL); + ret = ret && ((regdata & BCMA_RESET_CTL_RESET) == 0); + + return ret; +} + +static void brcmf_chip_sb_coredisable(struct brcmf_core_priv *core, + u32 prereset, u32 reset) +{ + struct brcmf_chip_priv *ci; + u32 val, base; + + ci = core->chip; + base = core->pub.base; + val = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatelow)); + if (val & SSB_TMSLOW_RESET) + return; + + val = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatelow)); + if ((val & SSB_TMSLOW_CLOCK) != 0) { + /* + * set target reject and spin until busy is clear + * (preserve core-specific bits) + */ + val = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatelow)); + ci->ops->write32(ci->ctx, CORE_SB(base, sbtmstatelow), + val | SSB_TMSLOW_REJECT); + + val = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatelow)); + udelay(1); + SPINWAIT((ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatehigh)) + & SSB_TMSHIGH_BUSY), 100000); + + val = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatehigh)); + if (val & SSB_TMSHIGH_BUSY) + brcmf_err("core state still busy\n"); + + val = ci->ops->read32(ci->ctx, CORE_SB(base, sbidlow)); + if (val & SSB_IDLOW_INITIATOR) { + val = ci->ops->read32(ci->ctx, + CORE_SB(base, sbimstate)); + val |= SSB_IMSTATE_REJECT; + ci->ops->write32(ci->ctx, + CORE_SB(base, sbimstate), val); + val = ci->ops->read32(ci->ctx, + CORE_SB(base, sbimstate)); + udelay(1); + SPINWAIT((ci->ops->read32(ci->ctx, + CORE_SB(base, sbimstate)) & + SSB_IMSTATE_BUSY), 100000); + } + + /* set reset and reject while enabling the clocks */ + val = SSB_TMSLOW_FGC | SSB_TMSLOW_CLOCK | + SSB_TMSLOW_REJECT | SSB_TMSLOW_RESET; + ci->ops->write32(ci->ctx, CORE_SB(base, sbtmstatelow), val); + val = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatelow)); + udelay(10); + + /* clear the initiator reject bit */ + val = ci->ops->read32(ci->ctx, CORE_SB(base, sbidlow)); + if (val & SSB_IDLOW_INITIATOR) { + val = ci->ops->read32(ci->ctx, + CORE_SB(base, sbimstate)); + val &= ~SSB_IMSTATE_REJECT; + ci->ops->write32(ci->ctx, + CORE_SB(base, sbimstate), val); + } + } + + /* leave reset and reject asserted */ + ci->ops->write32(ci->ctx, CORE_SB(base, sbtmstatelow), + (SSB_TMSLOW_REJECT | SSB_TMSLOW_RESET)); + udelay(1); +} + +static void brcmf_chip_ai_coredisable(struct brcmf_core_priv *core, + u32 prereset, u32 reset) +{ + struct brcmf_chip_priv *ci; + u32 regdata; + + ci = core->chip; + + /* if core is already in reset, skip reset */ + regdata = ci->ops->read32(ci->ctx, core->wrapbase + BCMA_RESET_CTL); + if ((regdata & BCMA_RESET_CTL_RESET) != 0) + goto in_reset_configure; + + /* configure reset */ + ci->ops->write32(ci->ctx, core->wrapbase + BCMA_IOCTL, + prereset | BCMA_IOCTL_FGC | BCMA_IOCTL_CLK); + ci->ops->read32(ci->ctx, core->wrapbase + BCMA_IOCTL); + + /* put in reset */ + ci->ops->write32(ci->ctx, core->wrapbase + BCMA_RESET_CTL, + BCMA_RESET_CTL_RESET); + usleep_range(10, 20); + + /* wait till reset is 1 */ + SPINWAIT(ci->ops->read32(ci->ctx, core->wrapbase + BCMA_RESET_CTL) != + BCMA_RESET_CTL_RESET, 300); + +in_reset_configure: + /* in-reset configure */ + ci->ops->write32(ci->ctx, core->wrapbase + BCMA_IOCTL, + reset | BCMA_IOCTL_FGC | BCMA_IOCTL_CLK); + ci->ops->read32(ci->ctx, core->wrapbase + BCMA_IOCTL); +} + +static void brcmf_chip_sb_resetcore(struct brcmf_core_priv *core, u32 prereset, + u32 reset, u32 postreset) +{ + struct brcmf_chip_priv *ci; + u32 regdata; + u32 base; + + ci = core->chip; + base = core->pub.base; + /* + * Must do the disable sequence first to work for + * arbitrary current core state. + */ + brcmf_chip_sb_coredisable(core, 0, 0); + + /* + * Now do the initialization sequence. + * set reset while enabling the clock and + * forcing them on throughout the core + */ + ci->ops->write32(ci->ctx, CORE_SB(base, sbtmstatelow), + SSB_TMSLOW_FGC | SSB_TMSLOW_CLOCK | + SSB_TMSLOW_RESET); + regdata = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatelow)); + udelay(1); + + /* clear any serror */ + regdata = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatehigh)); + if (regdata & SSB_TMSHIGH_SERR) + ci->ops->write32(ci->ctx, CORE_SB(base, sbtmstatehigh), 0); + + regdata = ci->ops->read32(ci->ctx, CORE_SB(base, sbimstate)); + if (regdata & (SSB_IMSTATE_IBE | SSB_IMSTATE_TO)) { + regdata &= ~(SSB_IMSTATE_IBE | SSB_IMSTATE_TO); + ci->ops->write32(ci->ctx, CORE_SB(base, sbimstate), regdata); + } + + /* clear reset and allow it to propagate throughout the core */ + ci->ops->write32(ci->ctx, CORE_SB(base, sbtmstatelow), + SSB_TMSLOW_FGC | SSB_TMSLOW_CLOCK); + regdata = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatelow)); + udelay(1); + + /* leave clock enabled */ + ci->ops->write32(ci->ctx, CORE_SB(base, sbtmstatelow), + SSB_TMSLOW_CLOCK); + regdata = ci->ops->read32(ci->ctx, CORE_SB(base, sbtmstatelow)); + udelay(1); +} + +static void brcmf_chip_ai_resetcore(struct brcmf_core_priv *core, u32 prereset, + u32 reset, u32 postreset) +{ + struct brcmf_chip_priv *ci; + int count; + + ci = core->chip; + + /* must disable first to work for arbitrary current core state */ + brcmf_chip_ai_coredisable(core, prereset, reset); + + count = 0; + while (ci->ops->read32(ci->ctx, core->wrapbase + BCMA_RESET_CTL) & + BCMA_RESET_CTL_RESET) { + ci->ops->write32(ci->ctx, core->wrapbase + BCMA_RESET_CTL, 0); + count++; + if (count > 50) + break; + usleep_range(40, 60); + } + + ci->ops->write32(ci->ctx, core->wrapbase + BCMA_IOCTL, + postreset | BCMA_IOCTL_CLK); + ci->ops->read32(ci->ctx, core->wrapbase + BCMA_IOCTL); +} + +static char *brcmf_chip_name(uint chipid, char *buf, uint len) +{ + const char *fmt; + + fmt = ((chipid > 0xa000) || (chipid < 0x4000)) ? "%d" : "%x"; + snprintf(buf, len, fmt, chipid); + return buf; +} + +static struct brcmf_core *brcmf_chip_add_core(struct brcmf_chip_priv *ci, + u16 coreid, u32 base, + u32 wrapbase) +{ + struct brcmf_core_priv *core; + + core = kzalloc(sizeof(*core), GFP_KERNEL); + if (!core) + return ERR_PTR(-ENOMEM); + + core->pub.id = coreid; + core->pub.base = base; + core->chip = ci; + core->wrapbase = wrapbase; + + list_add_tail(&core->list, &ci->cores); + return &core->pub; +} + +#ifdef DEBUG +/* safety check for chipinfo */ +static int brcmf_chip_cores_check(struct brcmf_chip_priv *ci) +{ + struct brcmf_core_priv *core; + bool need_socram = false; + bool has_socram = false; + int idx = 1; + + list_for_each_entry(core, &ci->cores, list) { + brcmf_dbg(INFO, " [%-2d] core 0x%x:%-2d base 0x%08x wrap 0x%08x\n", + idx++, core->pub.id, core->pub.rev, core->pub.base, + core->wrapbase); + + switch (core->pub.id) { + case BCMA_CORE_ARM_CM3: + need_socram = true; + break; + case BCMA_CORE_INTERNAL_MEM: + has_socram = true; + break; + case BCMA_CORE_ARM_CR4: + if (ci->pub.rambase == 0) { + brcmf_err("RAM base not provided with ARM CR4 core\n"); + return -ENOMEM; + } + break; + default: + break; + } + } + + /* check RAM core presence for ARM CM3 core */ + if (need_socram && !has_socram) { + brcmf_err("RAM core not provided with ARM CM3 core\n"); + return -ENODEV; + } + return 0; +} +#else /* DEBUG */ +static inline int brcmf_chip_cores_check(struct brcmf_chip_priv *ci) +{ + return 0; +} +#endif + +static void brcmf_chip_get_raminfo(struct brcmf_chip_priv *ci) +{ + switch (ci->pub.chip) { + case BCM4329_CHIP_ID: + ci->pub.ramsize = BCM4329_RAMSIZE; + break; + case BCM43143_CHIP_ID: + ci->pub.ramsize = BCM43143_RAMSIZE; + break; + case BCM43241_CHIP_ID: + ci->pub.ramsize = 0x90000; + break; + case BCM4330_CHIP_ID: + ci->pub.ramsize = 0x48000; + break; + case BCM4334_CHIP_ID: + ci->pub.ramsize = 0x80000; + break; + case BCM4335_CHIP_ID: + ci->pub.ramsize = 0xc0000; + ci->pub.rambase = 0x180000; + break; + case BCM43362_CHIP_ID: + ci->pub.ramsize = 0x3c000; + break; + case BCM4339_CHIP_ID: + case BCM4354_CHIP_ID: + ci->pub.ramsize = 0xc0000; + ci->pub.rambase = 0x180000; + break; + default: + brcmf_err("unknown chip: %s\n", ci->pub.name); + break; + } +} + +static u32 brcmf_chip_dmp_get_desc(struct brcmf_chip_priv *ci, u32 *eromaddr, + u8 *type) +{ + u32 val; + + /* read next descriptor */ + val = ci->ops->read32(ci->ctx, *eromaddr); + *eromaddr += 4; + + if (!type) + return val; + + /* determine descriptor type */ + *type = (val & DMP_DESC_TYPE_MSK); + if ((*type & ~DMP_DESC_ADDRSIZE_GT32) == DMP_DESC_ADDRESS) + *type = DMP_DESC_ADDRESS; + + return val; +} + +static int brcmf_chip_dmp_get_regaddr(struct brcmf_chip_priv *ci, u32 *eromaddr, + u32 *regbase, u32 *wrapbase) +{ + u8 desc; + u32 val; + u8 mpnum = 0; + u8 stype, sztype, wraptype; + + *regbase = 0; + *wrapbase = 0; + + val = brcmf_chip_dmp_get_desc(ci, eromaddr, &desc); + if (desc == DMP_DESC_MASTER_PORT) { + mpnum = (val & DMP_MASTER_PORT_NUM) >> DMP_MASTER_PORT_NUM_S; + wraptype = DMP_SLAVE_TYPE_MWRAP; + } else if (desc == DMP_DESC_ADDRESS) { + /* revert erom address */ + *eromaddr -= 4; + wraptype = DMP_SLAVE_TYPE_SWRAP; + } else { + *eromaddr -= 4; + return -EILSEQ; + } + + do { + /* locate address descriptor */ + do { + val = brcmf_chip_dmp_get_desc(ci, eromaddr, &desc); + /* unexpected table end */ + if (desc == DMP_DESC_EOT) { + *eromaddr -= 4; + return -EFAULT; + } + } while (desc != DMP_DESC_ADDRESS); + + /* skip upper 32-bit address descriptor */ + if (val & DMP_DESC_ADDRSIZE_GT32) + brcmf_chip_dmp_get_desc(ci, eromaddr, NULL); + + sztype = (val & DMP_SLAVE_SIZE_TYPE) >> DMP_SLAVE_SIZE_TYPE_S; + + /* next size descriptor can be skipped */ + if (sztype == DMP_SLAVE_SIZE_DESC) { + val = brcmf_chip_dmp_get_desc(ci, eromaddr, NULL); + /* skip upper size descriptor if present */ + if (val & DMP_DESC_ADDRSIZE_GT32) + brcmf_chip_dmp_get_desc(ci, eromaddr, NULL); + } + + /* only look for 4K register regions */ + if (sztype != DMP_SLAVE_SIZE_4K) + continue; + + stype = (val & DMP_SLAVE_TYPE) >> DMP_SLAVE_TYPE_S; + + /* only regular slave and wrapper */ + if (*regbase == 0 && stype == DMP_SLAVE_TYPE_SLAVE) + *regbase = val & DMP_SLAVE_ADDR_BASE; + if (*wrapbase == 0 && stype == wraptype) + *wrapbase = val & DMP_SLAVE_ADDR_BASE; + } while (*regbase == 0 || *wrapbase == 0); + + return 0; +} + +static +int brcmf_chip_dmp_erom_scan(struct brcmf_chip_priv *ci) +{ + struct brcmf_core *core; + u32 eromaddr; + u8 desc_type = 0; + u32 val; + u16 id; + u8 nmp, nsp, nmw, nsw, rev; + u32 base, wrap; + int err; + + eromaddr = ci->ops->read32(ci->ctx, CORE_CC_REG(SI_ENUM_BASE, eromptr)); + + while (desc_type != DMP_DESC_EOT) { + val = brcmf_chip_dmp_get_desc(ci, &eromaddr, &desc_type); + if (!(val & DMP_DESC_VALID)) + continue; + + if (desc_type == DMP_DESC_EMPTY) + continue; + + /* need a component descriptor */ + if (desc_type != DMP_DESC_COMPONENT) + continue; + + id = (val & DMP_COMP_PARTNUM) >> DMP_COMP_PARTNUM_S; + + /* next descriptor must be component as well */ + val = brcmf_chip_dmp_get_desc(ci, &eromaddr, &desc_type); + if (WARN_ON((val & DMP_DESC_TYPE_MSK) != DMP_DESC_COMPONENT)) + return -EFAULT; + + /* only look at cores with master port(s) */ + nmp = (val & DMP_COMP_NUM_MPORT) >> DMP_COMP_NUM_MPORT_S; + nsp = (val & DMP_COMP_NUM_SPORT) >> DMP_COMP_NUM_SPORT_S; + nmw = (val & DMP_COMP_NUM_MWRAP) >> DMP_COMP_NUM_MWRAP_S; + nsw = (val & DMP_COMP_NUM_SWRAP) >> DMP_COMP_NUM_SWRAP_S; + rev = (val & DMP_COMP_REVISION) >> DMP_COMP_REVISION_S; + + /* need core with ports */ + if (nmw + nsw == 0) + continue; + + /* try to obtain register address info */ + err = brcmf_chip_dmp_get_regaddr(ci, &eromaddr, &base, &wrap); + if (err) + continue; + + /* finally a core to be added */ + core = brcmf_chip_add_core(ci, id, base, wrap); + if (IS_ERR(core)) + return PTR_ERR(core); + + core->rev = rev; + } + + return 0; +} + +static int brcmf_chip_recognition(struct brcmf_chip_priv *ci) +{ + struct brcmf_core *core; + u32 regdata; + u32 socitype; + + /* Get CC core rev + * Chipid is assume to be at offset 0 from SI_ENUM_BASE + * For different chiptypes or old sdio hosts w/o chipcommon, + * other ways of recognition should be added here. + */ + regdata = ci->ops->read32(ci->ctx, CORE_CC_REG(SI_ENUM_BASE, chipid)); + ci->pub.chip = regdata & CID_ID_MASK; + ci->pub.chiprev = (regdata & CID_REV_MASK) >> CID_REV_SHIFT; + socitype = (regdata & CID_TYPE_MASK) >> CID_TYPE_SHIFT; + + brcmf_chip_name(ci->pub.chip, ci->pub.name, sizeof(ci->pub.name)); + brcmf_dbg(INFO, "found %s chip: BCM%s, rev=%d\n", + socitype == SOCI_SB ? "SB" : "AXI", ci->pub.name, + ci->pub.chiprev); + + if (socitype == SOCI_SB) { + if (ci->pub.chip != BCM4329_CHIP_ID) { + brcmf_err("SB chip is not supported\n"); + return -ENODEV; + } + ci->iscoreup = brcmf_chip_sb_iscoreup; + ci->coredisable = brcmf_chip_sb_coredisable; + ci->resetcore = brcmf_chip_sb_resetcore; + + core = brcmf_chip_add_core(ci, BCMA_CORE_CHIPCOMMON, + SI_ENUM_BASE, 0); + brcmf_chip_sb_corerev(ci, core); + core = brcmf_chip_add_core(ci, BCMA_CORE_SDIO_DEV, + BCM4329_CORE_BUS_BASE, 0); + brcmf_chip_sb_corerev(ci, core); + core = brcmf_chip_add_core(ci, BCMA_CORE_INTERNAL_MEM, + BCM4329_CORE_SOCRAM_BASE, 0); + brcmf_chip_sb_corerev(ci, core); + core = brcmf_chip_add_core(ci, BCMA_CORE_ARM_CM3, + BCM4329_CORE_ARM_BASE, 0); + brcmf_chip_sb_corerev(ci, core); + + core = brcmf_chip_add_core(ci, BCMA_CORE_80211, 0x18001000, 0); + brcmf_chip_sb_corerev(ci, core); + } else if (socitype == SOCI_AI) { + ci->iscoreup = brcmf_chip_ai_iscoreup; + ci->coredisable = brcmf_chip_ai_coredisable; + ci->resetcore = brcmf_chip_ai_resetcore; + + brcmf_chip_dmp_erom_scan(ci); + } else { + brcmf_err("chip backplane type %u is not supported\n", + socitype); + return -ENODEV; + } + + brcmf_chip_get_raminfo(ci); + + return brcmf_chip_cores_check(ci); +} + +static void brcmf_chip_disable_arm(struct brcmf_chip_priv *chip, u16 id) +{ + struct brcmf_core *core; + struct brcmf_core_priv *cr4; + u32 val; + + + core = brcmf_chip_get_core(&chip->pub, id); + if (!core) + return; + + switch (id) { + case BCMA_CORE_ARM_CM3: + brcmf_chip_coredisable(core, 0, 0); + break; + case BCMA_CORE_ARM_CR4: + cr4 = container_of(core, struct brcmf_core_priv, pub); + + /* clear all IOCTL bits except HALT bit */ + val = chip->ops->read32(chip->ctx, cr4->wrapbase + BCMA_IOCTL); + val &= ARMCR4_BCMA_IOCTL_CPUHALT; + brcmf_chip_resetcore(core, val, ARMCR4_BCMA_IOCTL_CPUHALT, + ARMCR4_BCMA_IOCTL_CPUHALT); + break; + default: + brcmf_err("unknown id: %u\n", id); + break; + } +} + +static int brcmf_chip_setup(struct brcmf_chip_priv *chip) +{ + struct brcmf_chip *pub; + struct brcmf_core_priv *cc; + u32 base; + u32 val; + int ret = 0; + + pub = &chip->pub; + cc = list_first_entry(&chip->cores, struct brcmf_core_priv, list); + base = cc->pub.base; + + /* get chipcommon capabilites */ + pub->cc_caps = chip->ops->read32(chip->ctx, + CORE_CC_REG(base, capabilities)); + + /* get pmu caps & rev */ + if (pub->cc_caps & CC_CAP_PMU) { + val = chip->ops->read32(chip->ctx, + CORE_CC_REG(base, pmucapabilities)); + pub->pmurev = val & PCAP_REV_MASK; + pub->pmucaps = val; + } + + brcmf_dbg(INFO, "ccrev=%d, pmurev=%d, pmucaps=0x%x\n", + cc->pub.rev, pub->pmurev, pub->pmucaps); + + /* execute bus core specific setup */ + if (chip->ops->setup) + ret = chip->ops->setup(chip->ctx, pub); + + /* + * Make sure any on-chip ARM is off (in case strapping is wrong), + * or downloaded code was already running. + */ + brcmf_chip_disable_arm(chip, BCMA_CORE_ARM_CM3); + brcmf_chip_disable_arm(chip, BCMA_CORE_ARM_CR4); + return ret; +} + +struct brcmf_chip *brcmf_chip_attach(void *ctx, + const struct brcmf_buscore_ops *ops) +{ + struct brcmf_chip_priv *chip; + int err = 0; + + if (WARN_ON(!ops->read32)) + err = -EINVAL; + if (WARN_ON(!ops->write32)) + err = -EINVAL; + if (WARN_ON(!ops->prepare)) + err = -EINVAL; + if (WARN_ON(!ops->exit_dl)) + err = -EINVAL; + if (err < 0) + return ERR_PTR(-EINVAL); + + chip = kzalloc(sizeof(*chip), GFP_KERNEL); + if (!chip) + return ERR_PTR(-ENOMEM); + + INIT_LIST_HEAD(&chip->cores); + chip->num_cores = 0; + chip->ops = ops; + chip->ctx = ctx; + + err = ops->prepare(ctx); + if (err < 0) + goto fail; + + err = brcmf_chip_recognition(chip); + if (err < 0) + goto fail; + + err = brcmf_chip_setup(chip); + if (err < 0) + goto fail; + + return &chip->pub; + +fail: + brcmf_chip_detach(&chip->pub); + return ERR_PTR(err); +} + +void brcmf_chip_detach(struct brcmf_chip *pub) +{ + struct brcmf_chip_priv *chip; + struct brcmf_core_priv *core; + struct brcmf_core_priv *tmp; + + chip = container_of(pub, struct brcmf_chip_priv, pub); + list_for_each_entry_safe(core, tmp, &chip->cores, list) { + list_del(&core->list); + kfree(core); + } + kfree(chip); +} + +struct brcmf_core *brcmf_chip_get_core(struct brcmf_chip *pub, u16 coreid) +{ + struct brcmf_chip_priv *chip; + struct brcmf_core_priv *core; + + chip = container_of(pub, struct brcmf_chip_priv, pub); + list_for_each_entry(core, &chip->cores, list) + if (core->pub.id == coreid) + return &core->pub; + + return NULL; +} + +struct brcmf_core *brcmf_chip_get_chipcommon(struct brcmf_chip *pub) +{ + struct brcmf_chip_priv *chip; + struct brcmf_core_priv *cc; + + chip = container_of(pub, struct brcmf_chip_priv, pub); + cc = list_first_entry(&chip->cores, struct brcmf_core_priv, list); + if (WARN_ON(!cc || cc->pub.id != BCMA_CORE_CHIPCOMMON)) + return brcmf_chip_get_core(pub, BCMA_CORE_CHIPCOMMON); + return &cc->pub; +} + +bool brcmf_chip_iscoreup(struct brcmf_core *pub) +{ + struct brcmf_core_priv *core; + + core = container_of(pub, struct brcmf_core_priv, pub); + return core->chip->iscoreup(core); +} + +void brcmf_chip_coredisable(struct brcmf_core *pub, u32 prereset, u32 reset) +{ + struct brcmf_core_priv *core; + + core = container_of(pub, struct brcmf_core_priv, pub); + core->chip->coredisable(core, prereset, reset); +} + +void brcmf_chip_resetcore(struct brcmf_core *pub, u32 prereset, u32 reset, + u32 postreset) +{ + struct brcmf_core_priv *core; + + core = container_of(pub, struct brcmf_core_priv, pub); + core->chip->resetcore(core, prereset, reset, postreset); +} + +static void +brcmf_chip_cm3_enterdl(struct brcmf_chip_priv *chip) +{ + struct brcmf_core *core; + + brcmf_chip_disable_arm(chip, BCMA_CORE_ARM_CM3); + core = brcmf_chip_get_core(&chip->pub, BCMA_CORE_80211); + brcmf_chip_resetcore(core, D11_BCMA_IOCTL_PHYRESET | + D11_BCMA_IOCTL_PHYCLOCKEN, + D11_BCMA_IOCTL_PHYCLOCKEN, + D11_BCMA_IOCTL_PHYCLOCKEN); + core = brcmf_chip_get_core(&chip->pub, BCMA_CORE_INTERNAL_MEM); + brcmf_chip_resetcore(core, 0, 0, 0); +} + +static bool brcmf_chip_cm3_exitdl(struct brcmf_chip_priv *chip) +{ + struct brcmf_core *core; + + core = brcmf_chip_get_core(&chip->pub, BCMA_CORE_INTERNAL_MEM); + if (!brcmf_chip_iscoreup(core)) { + brcmf_err("SOCRAM core is down after reset?\n"); + return false; + } + + chip->ops->exit_dl(chip->ctx, &chip->pub, 0); + + core = brcmf_chip_get_core(&chip->pub, BCMA_CORE_ARM_CM3); + brcmf_chip_resetcore(core, 0, 0, 0); + + return true; +} + +static inline void +brcmf_chip_cr4_enterdl(struct brcmf_chip_priv *chip) +{ + struct brcmf_core *core; + + brcmf_chip_disable_arm(chip, BCMA_CORE_ARM_CR4); + + core = brcmf_chip_get_core(&chip->pub, BCMA_CORE_80211); + brcmf_chip_resetcore(core, D11_BCMA_IOCTL_PHYRESET | + D11_BCMA_IOCTL_PHYCLOCKEN, + D11_BCMA_IOCTL_PHYCLOCKEN, + D11_BCMA_IOCTL_PHYCLOCKEN); +} + +static bool brcmf_chip_cr4_exitdl(struct brcmf_chip_priv *chip, u32 rstvec) +{ + struct brcmf_core *core; + + chip->ops->exit_dl(chip->ctx, &chip->pub, rstvec); + + /* restore ARM */ + core = brcmf_chip_get_core(&chip->pub, BCMA_CORE_ARM_CR4); + brcmf_chip_resetcore(core, ARMCR4_BCMA_IOCTL_CPUHALT, 0, 0); + + return true; +} + +void brcmf_chip_enter_download(struct brcmf_chip *pub) +{ + struct brcmf_chip_priv *chip; + struct brcmf_core *arm; + + brcmf_dbg(TRACE, "Enter\n"); + + chip = container_of(pub, struct brcmf_chip_priv, pub); + arm = brcmf_chip_get_core(pub, BCMA_CORE_ARM_CR4); + if (arm) { + brcmf_chip_cr4_enterdl(chip); + return; + } + + brcmf_chip_cm3_enterdl(chip); +} + +bool brcmf_chip_exit_download(struct brcmf_chip *pub, u32 rstvec) +{ + struct brcmf_chip_priv *chip; + struct brcmf_core *arm; + + brcmf_dbg(TRACE, "Enter\n"); + + chip = container_of(pub, struct brcmf_chip_priv, pub); + arm = brcmf_chip_get_core(pub, BCMA_CORE_ARM_CR4); + if (arm) + return brcmf_chip_cr4_exitdl(chip, rstvec); + + return brcmf_chip_cm3_exitdl(chip); +} + +bool brcmf_chip_sr_capable(struct brcmf_chip *pub) +{ + u32 base, addr, reg, pmu_cc3_mask = ~0; + struct brcmf_chip_priv *chip; + + brcmf_dbg(TRACE, "Enter\n"); + + /* old chips with PMU version less than 17 don't support save restore */ + if (pub->pmurev < 17) + return false; + + base = brcmf_chip_get_chipcommon(pub)->base; + chip = container_of(pub, struct brcmf_chip_priv, pub); + + switch (pub->chip) { + case BCM4354_CHIP_ID: + /* explicitly check SR engine enable bit */ + pmu_cc3_mask = BIT(2); + /* fall-through */ + case BCM43241_CHIP_ID: + case BCM4335_CHIP_ID: + case BCM4339_CHIP_ID: + /* read PMU chipcontrol register 3 */ + addr = CORE_CC_REG(base, chipcontrol_addr); + chip->ops->write32(chip->ctx, addr, 3); + addr = CORE_CC_REG(base, chipcontrol_data); + reg = chip->ops->read32(chip->ctx, addr); + return (reg & pmu_cc3_mask) != 0; + default: + addr = CORE_CC_REG(base, pmucapabilities_ext); + reg = chip->ops->read32(chip->ctx, addr); + if ((reg & PCAPEXT_SR_SUPPORTED_MASK) == 0) + return false; + + addr = CORE_CC_REG(base, retention_ctl); + reg = chip->ops->read32(chip->ctx, addr); + return (reg & (PMU_RCTL_MACPHY_DISABLE_MASK | + PMU_RCTL_LOGIC_DISABLE_MASK)) == 0; + } +} diff --git a/drivers/net/wireless/brcm80211/brcmfmac/chip.h b/drivers/net/wireless/brcm80211/brcmfmac/chip.h new file mode 100644 index 00000000000..c32908da90c --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/chip.h @@ -0,0 +1,91 @@ +/* + * Copyright (c) 2014 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#ifndef BRCMF_CHIP_H +#define BRCMF_CHIP_H + +#include <linux/types.h> + +#define CORE_CC_REG(base, field) \ + (base + offsetof(struct chipcregs, field)) + +/** + * struct brcmf_chip - chip level information. + * + * @chip: chip identifier. + * @chiprev: chip revision. + * @cc_caps: chipcommon core capabilities. + * @pmucaps: PMU capabilities. + * @pmurev: PMU revision. + * @rambase: RAM base address (only applicable for ARM CR4 chips). + * @ramsize: amount of RAM on chip. + * @name: string representation of the chip identifier. + */ +struct brcmf_chip { + u32 chip; + u32 chiprev; + u32 cc_caps; + u32 pmucaps; + u32 pmurev; + u32 rambase; + u32 ramsize; + char name[8]; +}; + +/** + * struct brcmf_core - core related information. + * + * @id: core identifier. + * @rev: core revision. + * @base: base address of core register space. + */ +struct brcmf_core { + u16 id; + u16 rev; + u32 base; +}; + +/** + * struct brcmf_buscore_ops - buscore specific callbacks. + * + * @read32: read 32-bit value over bus. + * @write32: write 32-bit value over bus. + * @prepare: prepare bus for core configuration. + * @setup: bus-specific core setup. + * @exit_dl: exit download state. + * The callback should use the provided @rstvec when non-zero. + */ +struct brcmf_buscore_ops { + u32 (*read32)(void *ctx, u32 addr); + void (*write32)(void *ctx, u32 addr, u32 value); + int (*prepare)(void *ctx); + int (*setup)(void *ctx, struct brcmf_chip *chip); + void (*exit_dl)(void *ctx, struct brcmf_chip *chip, u32 rstvec); +}; + +struct brcmf_chip *brcmf_chip_attach(void *ctx, + const struct brcmf_buscore_ops *ops); +void brcmf_chip_detach(struct brcmf_chip *chip); +struct brcmf_core *brcmf_chip_get_core(struct brcmf_chip *chip, u16 coreid); +struct brcmf_core *brcmf_chip_get_chipcommon(struct brcmf_chip *chip); +bool brcmf_chip_iscoreup(struct brcmf_core *core); +void brcmf_chip_coredisable(struct brcmf_core *core, u32 prereset, u32 reset); +void brcmf_chip_resetcore(struct brcmf_core *core, u32 prereset, u32 reset, + u32 postreset); +void brcmf_chip_enter_download(struct brcmf_chip *ci); +bool brcmf_chip_exit_download(struct brcmf_chip *ci, u32 rstvec); +bool brcmf_chip_sr_capable(struct brcmf_chip *pub); + +#endif /* BRCMF_AXIDMP_H */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd.h b/drivers/net/wireless/brcm80211/brcmfmac/dhd.h new file mode 100644 index 00000000000..16f9ab2568a --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd.h @@ -0,0 +1,195 @@ +/* + * Copyright (c) 2010 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/**************** + * Common types * + */ + +#ifndef _BRCMF_H_ +#define _BRCMF_H_ + +#include "fweh.h" + +#define TOE_TX_CSUM_OL 0x00000001 +#define TOE_RX_CSUM_OL 0x00000002 + +/* For supporting multiple interfaces */ +#define BRCMF_MAX_IFS 16 + +#define DOT11_MAX_DEFAULT_KEYS 4 + +/* Small, medium and maximum buffer size for dcmd + */ +#define BRCMF_DCMD_SMLEN 256 +#define BRCMF_DCMD_MEDLEN 1536 +#define BRCMF_DCMD_MAXLEN 8192 + +/* IOCTL from host to device are limited in lenght. A device can only handle + * ethernet frame size. This limitation is to be applied by protocol layer. + */ +#define BRCMF_TX_IOCTL_MAX_MSG_SIZE (ETH_FRAME_LEN+ETH_FCS_LEN) + +#define BRCMF_AMPDU_RX_REORDER_MAXFLOWS 256 + +/* Length of firmware version string stored for + * ethtool driver info which uses 32 bytes as well. + */ +#define BRCMF_DRIVER_FIRMWARE_VERSION_LEN 32 + +/* Bus independent dongle command */ +struct brcmf_dcmd { + uint cmd; /* common dongle cmd definition */ + void *buf; /* pointer to user buffer */ + uint len; /* length of user buffer */ + u8 set; /* get or set request (optional) */ + uint used; /* bytes read or written (optional) */ + uint needed; /* bytes needed (optional) */ +}; + +/** + * struct brcmf_ampdu_rx_reorder - AMPDU receive reorder info + * + * @pktslots: dynamic allocated array for ordering AMPDU packets. + * @flow_id: AMPDU flow identifier. + * @cur_idx: last AMPDU index from firmware. + * @exp_idx: expected next AMPDU index. + * @max_idx: maximum amount of packets per AMPDU. + * @pend_pkts: number of packets currently in @pktslots. + */ +struct brcmf_ampdu_rx_reorder { + struct sk_buff **pktslots; + u8 flow_id; + u8 cur_idx; + u8 exp_idx; + u8 max_idx; + u8 pend_pkts; +}; + +/* Forward decls for struct brcmf_pub (see below) */ +struct brcmf_proto; /* device communication protocol info */ +struct brcmf_cfg80211_dev; /* cfg80211 device info */ +struct brcmf_fws_info; /* firmware signalling info */ + +/* Common structure for module and instance linkage */ +struct brcmf_pub { + /* Linkage ponters */ + struct brcmf_bus *bus_if; + struct brcmf_proto *proto; + struct brcmf_cfg80211_info *config; + + /* Internal brcmf items */ + uint hdrlen; /* Total BRCMF header length (proto + bus) */ + uint rxsz; /* Rx buffer size bus module should use */ + u8 wme_dp; /* wme discard priority */ + + /* Dongle media info */ + char fwver[BRCMF_DRIVER_FIRMWARE_VERSION_LEN]; + u8 mac[ETH_ALEN]; /* MAC address obtained from dongle */ + + /* Multicast data packets sent to dongle */ + unsigned long tx_multicast; + + struct brcmf_if *iflist[BRCMF_MAX_IFS]; + + struct mutex proto_block; + unsigned char proto_buf[BRCMF_DCMD_MAXLEN]; + + struct brcmf_fweh_info fweh; + + struct brcmf_fws_info *fws; + + struct brcmf_ampdu_rx_reorder + *reorder_flows[BRCMF_AMPDU_RX_REORDER_MAXFLOWS]; +#ifdef DEBUG + struct dentry *dbgfs_dir; +#endif +}; + +/* forward declarations */ +struct brcmf_cfg80211_vif; +struct brcmf_fws_mac_descriptor; + +/** + * enum brcmf_netif_stop_reason - reason for stopping netif queue. + * + * @BRCMF_NETIF_STOP_REASON_FWS_FC: + * netif stopped due to firmware signalling flow control. + * @BRCMF_NETIF_STOP_REASON_BLOCK_BUS: + * netif stopped due to bus blocking. + */ +enum brcmf_netif_stop_reason { + BRCMF_NETIF_STOP_REASON_FWS_FC = 1, + BRCMF_NETIF_STOP_REASON_BLOCK_BUS = 2 +}; + +/** + * struct brcmf_if - interface control information. + * + * @drvr: points to device related information. + * @vif: points to cfg80211 specific interface information. + * @ndev: associated network device. + * @stats: interface specific network statistics. + * @setmacaddr_work: worker object for setting mac address. + * @multicast_work: worker object for multicast provisioning. + * @fws_desc: interface specific firmware-signalling descriptor. + * @ifidx: interface index in device firmware. + * @bssidx: index of bss associated with this interface. + * @mac_addr: assigned mac address. + * @netif_stop: bitmap indicates reason why netif queues are stopped. + * @netif_stop_lock: spinlock for update netif_stop from multiple sources. + * @pend_8021x_cnt: tracks outstanding number of 802.1x frames. + * @pend_8021x_wait: used for signalling change in count. + */ +struct brcmf_if { + struct brcmf_pub *drvr; + struct brcmf_cfg80211_vif *vif; + struct net_device *ndev; + struct net_device_stats stats; + struct work_struct setmacaddr_work; + struct work_struct multicast_work; + struct brcmf_fws_mac_descriptor *fws_desc; + int ifidx; + s32 bssidx; + u8 mac_addr[ETH_ALEN]; + u8 netif_stop; + spinlock_t netif_stop_lock; + atomic_t pend_8021x_cnt; + wait_queue_head_t pend_8021x_wait; +}; + +struct brcmf_skb_reorder_data { + u8 *reorder; +}; + +int brcmf_netdev_wait_pend8021x(struct net_device *ndev); + +/* Return pointer to interface name */ +char *brcmf_ifname(struct brcmf_pub *drvr, int idx); + +int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked); +struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx, + char *name, u8 *mac_addr); +void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx); +void brcmf_txflowblock_if(struct brcmf_if *ifp, + enum brcmf_netif_stop_reason reason, bool state); +u32 brcmf_get_chip_info(struct brcmf_if *ifp); +void brcmf_txfinalize(struct brcmf_pub *drvr, struct sk_buff *txp, u8 ifidx, + bool success); + +/* Sets dongle media info (drv_version, mac address). */ +int brcmf_c_preinit_dcmds(struct brcmf_if *ifp); + +#endif /* _BRCMF_H_ */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_bus.h b/drivers/net/wireless/brcm80211/brcmfmac/dhd_bus.h new file mode 100644 index 00000000000..7735328fff2 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_bus.h @@ -0,0 +1,200 @@ +/* + * Copyright (c) 2010 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef _BRCMF_BUS_H_ +#define _BRCMF_BUS_H_ + +#include "dhd_dbg.h" + +/* The level of bus communication with the dongle */ +enum brcmf_bus_state { + BRCMF_BUS_UNKNOWN, /* Not determined yet */ + BRCMF_BUS_NOMEDIUM, /* No medium access to dongle */ + BRCMF_BUS_DOWN, /* Not ready for frame transfers */ + BRCMF_BUS_LOAD, /* Download access only (CPU reset) */ + BRCMF_BUS_DATA /* Ready for frame transfers */ +}; + +/* The level of bus communication with the dongle */ +enum brcmf_bus_protocol_type { + BRCMF_PROTO_BCDC, + BRCMF_PROTO_MSGBUF +}; + +struct brcmf_bus_dcmd { + char *name; + char *param; + int param_len; + struct list_head list; +}; + +/** + * struct brcmf_bus_ops - bus callback operations. + * + * @preinit: execute bus/device specific dongle init commands (optional). + * @init: prepare for communication with dongle. + * @stop: clear pending frames, disable data flow. + * @txdata: send a data frame to the dongle. When the data + * has been transferred, the common driver must be + * notified using brcmf_txcomplete(). The common + * driver calls this function with interrupts + * disabled. + * @txctl: transmit a control request message to dongle. + * @rxctl: receive a control response message from dongle. + * @gettxq: obtain a reference of bus transmit queue (optional). + * + * This structure provides an abstract interface towards the + * bus specific driver. For control messages to common driver + * will assure there is only one active transaction. Unless + * indicated otherwise these callbacks are mandatory. + */ +struct brcmf_bus_ops { + int (*preinit)(struct device *dev); + void (*stop)(struct device *dev); + int (*txdata)(struct device *dev, struct sk_buff *skb); + int (*txctl)(struct device *dev, unsigned char *msg, uint len); + int (*rxctl)(struct device *dev, unsigned char *msg, uint len); + struct pktq * (*gettxq)(struct device *dev); +}; + +/** + * struct brcmf_bus - interface structure between common and bus layer + * + * @bus_priv: pointer to private bus device. + * @proto_type: protocol type, bcdc or msgbuf + * @dev: device pointer of bus device. + * @drvr: public driver information. + * @state: operational state of the bus interface. + * @maxctl: maximum size for rxctl request message. + * @tx_realloc: number of tx packets realloced for headroom. + * @dstats: dongle-based statistical data. + * @dcmd_list: bus/device specific dongle initialization commands. + * @chip: device identifier of the dongle chip. + * @chiprev: revision of the dongle chip. + */ +struct brcmf_bus { + union { + struct brcmf_sdio_dev *sdio; + struct brcmf_usbdev *usb; + } bus_priv; + enum brcmf_bus_protocol_type proto_type; + struct device *dev; + struct brcmf_pub *drvr; + enum brcmf_bus_state state; + uint maxctl; + unsigned long tx_realloc; + u32 chip; + u32 chiprev; + bool always_use_fws_queue; + + struct brcmf_bus_ops *ops; +}; + +/* + * callback wrappers + */ +static inline int brcmf_bus_preinit(struct brcmf_bus *bus) +{ + if (!bus->ops->preinit) + return 0; + return bus->ops->preinit(bus->dev); +} + +static inline void brcmf_bus_stop(struct brcmf_bus *bus) +{ + bus->ops->stop(bus->dev); +} + +static inline int brcmf_bus_txdata(struct brcmf_bus *bus, struct sk_buff *skb) +{ + return bus->ops->txdata(bus->dev, skb); +} + +static inline +int brcmf_bus_txctl(struct brcmf_bus *bus, unsigned char *msg, uint len) +{ + return bus->ops->txctl(bus->dev, msg, len); +} + +static inline +int brcmf_bus_rxctl(struct brcmf_bus *bus, unsigned char *msg, uint len) +{ + return bus->ops->rxctl(bus->dev, msg, len); +} + +static inline +struct pktq *brcmf_bus_gettxq(struct brcmf_bus *bus) +{ + if (!bus->ops->gettxq) + return ERR_PTR(-ENOENT); + + return bus->ops->gettxq(bus->dev); +} + +static inline bool brcmf_bus_ready(struct brcmf_bus *bus) +{ + return bus->state == BRCMF_BUS_LOAD || bus->state == BRCMF_BUS_DATA; +} + +static inline void brcmf_bus_change_state(struct brcmf_bus *bus, + enum brcmf_bus_state new_state) +{ + /* NOMEDIUM is permanent */ + if (bus->state == BRCMF_BUS_NOMEDIUM) + return; + + brcmf_dbg(TRACE, "%d -> %d\n", bus->state, new_state); + bus->state = new_state; +} + +/* + * interface functions from common layer + */ + +bool brcmf_c_prec_enq(struct device *dev, struct pktq *q, struct sk_buff *pkt, + int prec); + +/* Receive frame for delivery to OS. Callee disposes of rxp. */ +void brcmf_rx_frame(struct device *dev, struct sk_buff *rxp); + +/* Indication from bus module regarding presence/insertion of dongle. */ +int brcmf_attach(struct device *dev); +/* Indication from bus module regarding removal/absence of dongle */ +void brcmf_detach(struct device *dev); +/* Indication from bus module that dongle should be reset */ +void brcmf_dev_reset(struct device *dev); +/* Indication from bus module to change flow-control state */ +void brcmf_txflowblock(struct device *dev, bool state); + +/* Notify the bus has transferred the tx packet to firmware */ +void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success); + +int brcmf_bus_start(struct device *dev); +s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, + u32 len); +void brcmf_bus_add_txhdrlen(struct device *dev, uint len); + +#ifdef CONFIG_BRCMFMAC_SDIO +void brcmf_sdio_exit(void); +void brcmf_sdio_init(void); +void brcmf_sdio_register(void); +#endif +#ifdef CONFIG_BRCMFMAC_USB +void brcmf_usb_exit(void); +void brcmf_usb_register(void); +#endif + +#endif /* _BRCMF_BUS_H_ */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_common.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_common.c new file mode 100644 index 00000000000..ed3e32ce8c2 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_common.c @@ -0,0 +1,393 @@ +/* + * Copyright (c) 2010 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <linux/kernel.h> +#include <linux/string.h> +#include <linux/netdevice.h> +#include <brcmu_wifi.h> +#include <brcmu_utils.h> +#include "dhd.h" +#include "dhd_bus.h" +#include "dhd_dbg.h" +#include "fwil.h" +#include "fwil_types.h" +#include "tracepoint.h" + +#define PKTFILTER_BUF_SIZE 128 +#define BRCMF_DEFAULT_BCN_TIMEOUT 3 +#define BRCMF_DEFAULT_SCAN_CHANNEL_TIME 40 +#define BRCMF_DEFAULT_SCAN_UNASSOC_TIME 40 +#define BRCMF_DEFAULT_PACKET_FILTER "100 0 0 0 0x01 0x00" + +/* boost value for RSSI_DELTA in preferred join selection */ +#define BRCMF_JOIN_PREF_RSSI_BOOST 8 + + +bool brcmf_c_prec_enq(struct device *dev, struct pktq *q, + struct sk_buff *pkt, int prec) +{ + struct sk_buff *p; + int eprec = -1; /* precedence to evict from */ + bool discard_oldest; + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pub *drvr = bus_if->drvr; + + /* Fast case, precedence queue is not full and we are also not + * exceeding total queue length + */ + if (!pktq_pfull(q, prec) && !pktq_full(q)) { + brcmu_pktq_penq(q, prec, pkt); + return true; + } + + /* Determine precedence from which to evict packet, if any */ + if (pktq_pfull(q, prec)) + eprec = prec; + else if (pktq_full(q)) { + p = brcmu_pktq_peek_tail(q, &eprec); + if (eprec > prec) + return false; + } + + /* Evict if needed */ + if (eprec >= 0) { + /* Detect queueing to unconfigured precedence */ + discard_oldest = ac_bitmap_tst(drvr->wme_dp, eprec); + if (eprec == prec && !discard_oldest) + return false; /* refuse newer (incoming) packet */ + /* Evict packet according to discard policy */ + p = discard_oldest ? brcmu_pktq_pdeq(q, eprec) : + brcmu_pktq_pdeq_tail(q, eprec); + if (p == NULL) + brcmf_err("brcmu_pktq_penq() failed, oldest %d\n", + discard_oldest); + + brcmu_pkt_buf_free_skb(p); + } + + /* Enqueue */ + p = brcmu_pktq_penq(q, prec, pkt); + if (p == NULL) + brcmf_err("brcmu_pktq_penq() failed\n"); + + return p != NULL; +} + +/* Convert user's input in hex pattern to byte-size mask */ +static int brcmf_c_pattern_atoh(char *src, char *dst) +{ + int i; + if (strncmp(src, "0x", 2) != 0 && strncmp(src, "0X", 2) != 0) { + brcmf_err("Mask invalid format. Needs to start with 0x\n"); + return -EINVAL; + } + src = src + 2; /* Skip past 0x */ + if (strlen(src) % 2 != 0) { + brcmf_err("Mask invalid format. Length must be even.\n"); + return -EINVAL; + } + for (i = 0; *src != '\0'; i++) { + unsigned long res; + char num[3]; + strncpy(num, src, 2); + num[2] = '\0'; + if (kstrtoul(num, 16, &res)) + return -EINVAL; + dst[i] = (u8)res; + src += 2; + } + return i; +} + +static void +brcmf_c_pktfilter_offload_enable(struct brcmf_if *ifp, char *arg, int enable, + int master_mode) +{ + unsigned long res; + char *argv; + char *arg_save = NULL, *arg_org = NULL; + s32 err; + struct brcmf_pkt_filter_enable_le enable_parm; + + arg_save = kstrdup(arg, GFP_ATOMIC); + if (!arg_save) + goto fail; + + arg_org = arg_save; + + argv = strsep(&arg_save, " "); + + if (argv == NULL) { + brcmf_err("No args provided\n"); + goto fail; + } + + /* Parse packet filter id. */ + enable_parm.id = 0; + if (!kstrtoul(argv, 0, &res)) + enable_parm.id = cpu_to_le32((u32)res); + + /* Enable/disable the specified filter. */ + enable_parm.enable = cpu_to_le32(enable); + + err = brcmf_fil_iovar_data_set(ifp, "pkt_filter_enable", &enable_parm, + sizeof(enable_parm)); + if (err) + brcmf_err("Set pkt_filter_enable error (%d)\n", err); + + /* Control the master mode */ + err = brcmf_fil_iovar_int_set(ifp, "pkt_filter_mode", master_mode); + if (err) + brcmf_err("Set pkt_filter_mode error (%d)\n", err); + +fail: + kfree(arg_org); +} + +static void brcmf_c_pktfilter_offload_set(struct brcmf_if *ifp, char *arg) +{ + struct brcmf_pkt_filter_le *pkt_filter; + unsigned long res; + int buf_len; + s32 err; + u32 mask_size; + u32 pattern_size; + char *argv[8], *buf = NULL; + int i = 0; + char *arg_save = NULL, *arg_org = NULL; + + arg_save = kstrdup(arg, GFP_ATOMIC); + if (!arg_save) + goto fail; + + arg_org = arg_save; + + buf = kmalloc(PKTFILTER_BUF_SIZE, GFP_ATOMIC); + if (!buf) + goto fail; + + argv[i] = strsep(&arg_save, " "); + while (argv[i]) { + i++; + if (i >= 8) { + brcmf_err("Too many parameters\n"); + goto fail; + } + argv[i] = strsep(&arg_save, " "); + } + + if (i != 6) { + brcmf_err("Not enough args provided %d\n", i); + goto fail; + } + + pkt_filter = (struct brcmf_pkt_filter_le *)buf; + + /* Parse packet filter id. */ + pkt_filter->id = 0; + if (!kstrtoul(argv[0], 0, &res)) + pkt_filter->id = cpu_to_le32((u32)res); + + /* Parse filter polarity. */ + pkt_filter->negate_match = 0; + if (!kstrtoul(argv[1], 0, &res)) + pkt_filter->negate_match = cpu_to_le32((u32)res); + + /* Parse filter type. */ + pkt_filter->type = 0; + if (!kstrtoul(argv[2], 0, &res)) + pkt_filter->type = cpu_to_le32((u32)res); + + /* Parse pattern filter offset. */ + pkt_filter->u.pattern.offset = 0; + if (!kstrtoul(argv[3], 0, &res)) + pkt_filter->u.pattern.offset = cpu_to_le32((u32)res); + + /* Parse pattern filter mask. */ + mask_size = brcmf_c_pattern_atoh(argv[4], + (char *)pkt_filter->u.pattern.mask_and_pattern); + + /* Parse pattern filter pattern. */ + pattern_size = brcmf_c_pattern_atoh(argv[5], + (char *)&pkt_filter->u.pattern.mask_and_pattern[mask_size]); + + if (mask_size != pattern_size) { + brcmf_err("Mask and pattern not the same size\n"); + goto fail; + } + + pkt_filter->u.pattern.size_bytes = cpu_to_le32(mask_size); + buf_len = offsetof(struct brcmf_pkt_filter_le, + u.pattern.mask_and_pattern); + buf_len += mask_size + pattern_size; + + err = brcmf_fil_iovar_data_set(ifp, "pkt_filter_add", pkt_filter, + buf_len); + if (err) + brcmf_err("Set pkt_filter_add error (%d)\n", err); + +fail: + kfree(arg_org); + + kfree(buf); +} + +int brcmf_c_preinit_dcmds(struct brcmf_if *ifp) +{ + s8 eventmask[BRCMF_EVENTING_MASK_LEN]; + u8 buf[BRCMF_DCMD_SMLEN]; + struct brcmf_join_pref_params join_pref_params[2]; + char *ptr; + s32 err; + + /* retreive mac address */ + err = brcmf_fil_iovar_data_get(ifp, "cur_etheraddr", ifp->mac_addr, + sizeof(ifp->mac_addr)); + if (err < 0) { + brcmf_err("Retreiving cur_etheraddr failed, %d\n", + err); + goto done; + } + memcpy(ifp->drvr->mac, ifp->mac_addr, sizeof(ifp->drvr->mac)); + + /* query for 'ver' to get version info from firmware */ + memset(buf, 0, sizeof(buf)); + strcpy(buf, "ver"); + err = brcmf_fil_iovar_data_get(ifp, "ver", buf, sizeof(buf)); + if (err < 0) { + brcmf_err("Retreiving version information failed, %d\n", + err); + goto done; + } + ptr = (char *)buf; + strsep(&ptr, "\n"); + + /* Print fw version info */ + brcmf_err("Firmware version = %s\n", buf); + + /* locate firmware version number for ethtool */ + ptr = strrchr(buf, ' ') + 1; + strlcpy(ifp->drvr->fwver, ptr, sizeof(ifp->drvr->fwver)); + + /* + * Setup timeout if Beacons are lost and roam is off to report + * link down + */ + err = brcmf_fil_iovar_int_set(ifp, "bcn_timeout", + BRCMF_DEFAULT_BCN_TIMEOUT); + if (err) { + brcmf_err("bcn_timeout error (%d)\n", err); + goto done; + } + + /* Enable/Disable build-in roaming to allowed ext supplicant to take + * of romaing + */ + err = brcmf_fil_iovar_int_set(ifp, "roam_off", 1); + if (err) { + brcmf_err("roam_off error (%d)\n", err); + goto done; + } + + /* Setup join_pref to select target by RSSI(with boost on 5GHz) */ + join_pref_params[0].type = BRCMF_JOIN_PREF_RSSI_DELTA; + join_pref_params[0].len = 2; + join_pref_params[0].rssi_gain = BRCMF_JOIN_PREF_RSSI_BOOST; + join_pref_params[0].band = WLC_BAND_5G; + join_pref_params[1].type = BRCMF_JOIN_PREF_RSSI; + join_pref_params[1].len = 2; + join_pref_params[1].rssi_gain = 0; + join_pref_params[1].band = 0; + err = brcmf_fil_iovar_data_set(ifp, "join_pref", join_pref_params, + sizeof(join_pref_params)); + if (err) + brcmf_err("Set join_pref error (%d)\n", err); + + /* Setup event_msgs, enable E_IF */ + err = brcmf_fil_iovar_data_get(ifp, "event_msgs", eventmask, + BRCMF_EVENTING_MASK_LEN); + if (err) { + brcmf_err("Get event_msgs error (%d)\n", err); + goto done; + } + setbit(eventmask, BRCMF_E_IF); + err = brcmf_fil_iovar_data_set(ifp, "event_msgs", eventmask, + BRCMF_EVENTING_MASK_LEN); + if (err) { + brcmf_err("Set event_msgs error (%d)\n", err); + goto done; + } + + /* Setup default scan channel time */ + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_CHANNEL_TIME, + BRCMF_DEFAULT_SCAN_CHANNEL_TIME); + if (err) { + brcmf_err("BRCMF_C_SET_SCAN_CHANNEL_TIME error (%d)\n", + err); + goto done; + } + + /* Setup default scan unassoc time */ + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_UNASSOC_TIME, + BRCMF_DEFAULT_SCAN_UNASSOC_TIME); + if (err) { + brcmf_err("BRCMF_C_SET_SCAN_UNASSOC_TIME error (%d)\n", + err); + goto done; + } + + /* Setup packet filter */ + brcmf_c_pktfilter_offload_set(ifp, BRCMF_DEFAULT_PACKET_FILTER); + brcmf_c_pktfilter_offload_enable(ifp, BRCMF_DEFAULT_PACKET_FILTER, + 0, true); + + /* do bus specific preinit here */ + err = brcmf_bus_preinit(ifp->drvr->bus_if); +done: + return err; +} + +#ifdef CONFIG_BRCM_TRACING +void __brcmf_err(const char *func, const char *fmt, ...) +{ + struct va_format vaf = { + .fmt = fmt, + }; + va_list args; + + va_start(args, fmt); + vaf.va = &args; + pr_err("%s: %pV", func, &vaf); + trace_brcmf_err(func, &vaf); + va_end(args); +} +#endif +#if defined(CONFIG_BRCM_TRACING) || defined(CONFIG_BRCMDBG) +void __brcmf_dbg(u32 level, const char *func, const char *fmt, ...) +{ + struct va_format vaf = { + .fmt = fmt, + }; + va_list args; + + va_start(args, fmt); + vaf.va = &args; + if (brcmf_msg_level & level) + pr_debug("%s %pV", func, &vaf); + trace_brcmf_dbg(level, func, &vaf); + va_end(args); +} +#endif diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.c new file mode 100644 index 00000000000..03fe8aca4d3 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.c @@ -0,0 +1,245 @@ +/* + * Copyright (c) 2012 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#include <linux/debugfs.h> +#include <linux/netdevice.h> +#include <linux/module.h> + +#include <brcmu_wifi.h> +#include <brcmu_utils.h> +#include "dhd.h" +#include "dhd_bus.h" +#include "dhd_dbg.h" + +static struct dentry *root_folder; + +void brcmf_debugfs_init(void) +{ + root_folder = debugfs_create_dir(KBUILD_MODNAME, NULL); + if (IS_ERR(root_folder)) + root_folder = NULL; +} + +void brcmf_debugfs_exit(void) +{ + if (!root_folder) + return; + + debugfs_remove_recursive(root_folder); + root_folder = NULL; +} + +static +ssize_t brcmf_debugfs_chipinfo_read(struct file *f, char __user *data, + size_t count, loff_t *ppos) +{ + struct brcmf_pub *drvr = f->private_data; + struct brcmf_bus *bus = drvr->bus_if; + char buf[40]; + int res; + + /* only allow read from start */ + if (*ppos > 0) + return 0; + + res = scnprintf(buf, sizeof(buf), "chip: %x(%u) rev %u\n", + bus->chip, bus->chip, bus->chiprev); + return simple_read_from_buffer(data, count, ppos, buf, res); +} + +static const struct file_operations brcmf_debugfs_chipinfo_ops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = brcmf_debugfs_chipinfo_read +}; + +static int brcmf_debugfs_create_chipinfo(struct brcmf_pub *drvr) +{ + struct dentry *dentry = drvr->dbgfs_dir; + + if (!IS_ERR_OR_NULL(dentry)) + debugfs_create_file("chipinfo", S_IRUGO, dentry, drvr, + &brcmf_debugfs_chipinfo_ops); + return 0; +} + +int brcmf_debugfs_attach(struct brcmf_pub *drvr) +{ + struct device *dev = drvr->bus_if->dev; + + if (!root_folder) + return -ENODEV; + + drvr->dbgfs_dir = debugfs_create_dir(dev_name(dev), root_folder); + brcmf_debugfs_create_chipinfo(drvr); + return PTR_ERR_OR_ZERO(drvr->dbgfs_dir); +} + +void brcmf_debugfs_detach(struct brcmf_pub *drvr) +{ + if (!IS_ERR_OR_NULL(drvr->dbgfs_dir)) + debugfs_remove_recursive(drvr->dbgfs_dir); +} + +struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr) +{ + return drvr->dbgfs_dir; +} + +static +ssize_t brcmf_debugfs_sdio_counter_read(struct file *f, char __user *data, + size_t count, loff_t *ppos) +{ + struct brcmf_sdio_count *sdcnt = f->private_data; + char buf[750]; + int res; + + /* only allow read from start */ + if (*ppos > 0) + return 0; + + res = scnprintf(buf, sizeof(buf), + "intrcount: %u\nlastintrs: %u\n" + "pollcnt: %u\nregfails: %u\n" + "tx_sderrs: %u\nfcqueued: %u\n" + "rxrtx: %u\nrx_toolong: %u\n" + "rxc_errors: %u\nrx_hdrfail: %u\n" + "rx_badhdr: %u\nrx_badseq: %u\n" + "fc_rcvd: %u\nfc_xoff: %u\n" + "fc_xon: %u\nrxglomfail: %u\n" + "rxglomframes: %u\nrxglompkts: %u\n" + "f2rxhdrs: %u\nf2rxdata: %u\n" + "f2txdata: %u\nf1regdata: %u\n" + "tickcnt: %u\ntx_ctlerrs: %lu\n" + "tx_ctlpkts: %lu\nrx_ctlerrs: %lu\n" + "rx_ctlpkts: %lu\nrx_readahead: %lu\n", + sdcnt->intrcount, sdcnt->lastintrs, + sdcnt->pollcnt, sdcnt->regfails, + sdcnt->tx_sderrs, sdcnt->fcqueued, + sdcnt->rxrtx, sdcnt->rx_toolong, + sdcnt->rxc_errors, sdcnt->rx_hdrfail, + sdcnt->rx_badhdr, sdcnt->rx_badseq, + sdcnt->fc_rcvd, sdcnt->fc_xoff, + sdcnt->fc_xon, sdcnt->rxglomfail, + sdcnt->rxglomframes, sdcnt->rxglompkts, + sdcnt->f2rxhdrs, sdcnt->f2rxdata, + sdcnt->f2txdata, sdcnt->f1regdata, + sdcnt->tickcnt, sdcnt->tx_ctlerrs, + sdcnt->tx_ctlpkts, sdcnt->rx_ctlerrs, + sdcnt->rx_ctlpkts, sdcnt->rx_readahead_cnt); + + return simple_read_from_buffer(data, count, ppos, buf, res); +} + +static const struct file_operations brcmf_debugfs_sdio_counter_ops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = brcmf_debugfs_sdio_counter_read +}; + +void brcmf_debugfs_create_sdio_count(struct brcmf_pub *drvr, + struct brcmf_sdio_count *sdcnt) +{ + struct dentry *dentry = drvr->dbgfs_dir; + + if (!IS_ERR_OR_NULL(dentry)) + debugfs_create_file("counters", S_IRUGO, dentry, + sdcnt, &brcmf_debugfs_sdio_counter_ops); +} + +static +ssize_t brcmf_debugfs_fws_stats_read(struct file *f, char __user *data, + size_t count, loff_t *ppos) +{ + struct brcmf_fws_stats *fwstats = f->private_data; + char buf[650]; + int res; + + /* only allow read from start */ + if (*ppos > 0) + return 0; + + res = scnprintf(buf, sizeof(buf), + "header_pulls: %u\n" + "header_only_pkt: %u\n" + "tlv_parse_failed: %u\n" + "tlv_invalid_type: %u\n" + "mac_update_fails: %u\n" + "ps_update_fails: %u\n" + "if_update_fails: %u\n" + "pkt2bus: %u\n" + "generic_error: %u\n" + "rollback_success: %u\n" + "rollback_failed: %u\n" + "delayq_full: %u\n" + "supprq_full: %u\n" + "txs_indicate: %u\n" + "txs_discard: %u\n" + "txs_suppr_core: %u\n" + "txs_suppr_ps: %u\n" + "txs_tossed: %u\n" + "txs_host_tossed: %u\n" + "bus_flow_block: %u\n" + "fws_flow_block: %u\n" + "send_pkts: BK:%u BE:%u VO:%u VI:%u BCMC:%u\n" + "requested_sent: BK:%u BE:%u VO:%u VI:%u BCMC:%u\n", + fwstats->header_pulls, + fwstats->header_only_pkt, + fwstats->tlv_parse_failed, + fwstats->tlv_invalid_type, + fwstats->mac_update_failed, + fwstats->mac_ps_update_failed, + fwstats->if_update_failed, + fwstats->pkt2bus, + fwstats->generic_error, + fwstats->rollback_success, + fwstats->rollback_failed, + fwstats->delayq_full_error, + fwstats->supprq_full_error, + fwstats->txs_indicate, + fwstats->txs_discard, + fwstats->txs_supp_core, + fwstats->txs_supp_ps, + fwstats->txs_tossed, + fwstats->txs_host_tossed, + fwstats->bus_flow_block, + fwstats->fws_flow_block, + fwstats->send_pkts[0], fwstats->send_pkts[1], + fwstats->send_pkts[2], fwstats->send_pkts[3], + fwstats->send_pkts[4], + fwstats->requested_sent[0], + fwstats->requested_sent[1], + fwstats->requested_sent[2], + fwstats->requested_sent[3], + fwstats->requested_sent[4]); + + return simple_read_from_buffer(data, count, ppos, buf, res); +} + +static const struct file_operations brcmf_debugfs_fws_stats_ops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = brcmf_debugfs_fws_stats_read +}; + +void brcmf_debugfs_create_fws_stats(struct brcmf_pub *drvr, + struct brcmf_fws_stats *stats) +{ + struct dentry *dentry = drvr->dbgfs_dir; + + if (!IS_ERR_OR_NULL(dentry)) + debugfs_create_file("fws_stats", S_IRUGO, dentry, + stats, &brcmf_debugfs_fws_stats_ops); +} diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.h b/drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.h new file mode 100644 index 00000000000..ef52ed7abc6 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.h @@ -0,0 +1,196 @@ +/* + * Copyright (c) 2010 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef _BRCMF_DBG_H_ +#define _BRCMF_DBG_H_ + +/* message levels */ +#define BRCMF_TRACE_VAL 0x00000002 +#define BRCMF_INFO_VAL 0x00000004 +#define BRCMF_DATA_VAL 0x00000008 +#define BRCMF_CTL_VAL 0x00000010 +#define BRCMF_TIMER_VAL 0x00000020 +#define BRCMF_HDRS_VAL 0x00000040 +#define BRCMF_BYTES_VAL 0x00000080 +#define BRCMF_INTR_VAL 0x00000100 +#define BRCMF_GLOM_VAL 0x00000200 +#define BRCMF_EVENT_VAL 0x00000400 +#define BRCMF_BTA_VAL 0x00000800 +#define BRCMF_FIL_VAL 0x00001000 +#define BRCMF_USB_VAL 0x00002000 +#define BRCMF_SCAN_VAL 0x00004000 +#define BRCMF_CONN_VAL 0x00008000 +#define BRCMF_BCDC_VAL 0x00010000 +#define BRCMF_SDIO_VAL 0x00020000 + +/* set default print format */ +#undef pr_fmt +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +/* Macro for error messages. net_ratelimit() is used when driver + * debugging is not selected. When debugging the driver error + * messages are as important as other tracing or even more so. + */ +#ifndef CONFIG_BRCM_TRACING +#ifdef CONFIG_BRCMDBG +#define brcmf_err(fmt, ...) pr_err("%s: " fmt, __func__, ##__VA_ARGS__) +#else +#define brcmf_err(fmt, ...) \ + do { \ + if (net_ratelimit()) \ + pr_err("%s: " fmt, __func__, ##__VA_ARGS__); \ + } while (0) +#endif +#else +__printf(2, 3) +void __brcmf_err(const char *func, const char *fmt, ...); +#define brcmf_err(fmt, ...) \ + __brcmf_err(__func__, fmt, ##__VA_ARGS__) +#endif + +#if defined(DEBUG) || defined(CONFIG_BRCM_TRACING) +__printf(3, 4) +void __brcmf_dbg(u32 level, const char *func, const char *fmt, ...); +#define brcmf_dbg(level, fmt, ...) \ +do { \ + __brcmf_dbg(BRCMF_##level##_VAL, __func__, \ + fmt, ##__VA_ARGS__); \ +} while (0) +#define BRCMF_DATA_ON() (brcmf_msg_level & BRCMF_DATA_VAL) +#define BRCMF_CTL_ON() (brcmf_msg_level & BRCMF_CTL_VAL) +#define BRCMF_HDRS_ON() (brcmf_msg_level & BRCMF_HDRS_VAL) +#define BRCMF_BYTES_ON() (brcmf_msg_level & BRCMF_BYTES_VAL) +#define BRCMF_GLOM_ON() (brcmf_msg_level & BRCMF_GLOM_VAL) +#define BRCMF_EVENT_ON() (brcmf_msg_level & BRCMF_EVENT_VAL) +#define BRCMF_FIL_ON() (brcmf_msg_level & BRCMF_FIL_VAL) + +#else /* defined(DEBUG) || defined(CONFIG_BRCM_TRACING) */ + +#define brcmf_dbg(level, fmt, ...) no_printk(fmt, ##__VA_ARGS__) + +#define BRCMF_DATA_ON() 0 +#define BRCMF_CTL_ON() 0 +#define BRCMF_HDRS_ON() 0 +#define BRCMF_BYTES_ON() 0 +#define BRCMF_GLOM_ON() 0 +#define BRCMF_EVENT_ON() 0 +#define BRCMF_FIL_ON() 0 + +#endif /* defined(DEBUG) || defined(CONFIG_BRCM_TRACING) */ + +#define brcmf_dbg_hex_dump(test, data, len, fmt, ...) \ +do { \ + trace_brcmf_hexdump((void *)data, len); \ + if (test) \ + brcmu_dbg_hex_dump(data, len, fmt, ##__VA_ARGS__); \ +} while (0) + +extern int brcmf_msg_level; + +/* + * hold counter variables used in brcmfmac sdio driver. + */ +struct brcmf_sdio_count { + uint intrcount; /* Count of device interrupt callbacks */ + uint lastintrs; /* Count as of last watchdog timer */ + uint pollcnt; /* Count of active polls */ + uint regfails; /* Count of R_REG failures */ + uint tx_sderrs; /* Count of tx attempts with sd errors */ + uint fcqueued; /* Tx packets that got queued */ + uint rxrtx; /* Count of rtx requests (NAK to dongle) */ + uint rx_toolong; /* Receive frames too long to receive */ + uint rxc_errors; /* SDIO errors when reading control frames */ + uint rx_hdrfail; /* SDIO errors on header reads */ + uint rx_badhdr; /* Bad received headers (roosync?) */ + uint rx_badseq; /* Mismatched rx sequence number */ + uint fc_rcvd; /* Number of flow-control events received */ + uint fc_xoff; /* Number which turned on flow-control */ + uint fc_xon; /* Number which turned off flow-control */ + uint rxglomfail; /* Failed deglom attempts */ + uint rxglomframes; /* Number of glom frames (superframes) */ + uint rxglompkts; /* Number of packets from glom frames */ + uint f2rxhdrs; /* Number of header reads */ + uint f2rxdata; /* Number of frame data reads */ + uint f2txdata; /* Number of f2 frame writes */ + uint f1regdata; /* Number of f1 register accesses */ + uint tickcnt; /* Number of watchdog been schedule */ + ulong tx_ctlerrs; /* Err of sending ctrl frames */ + ulong tx_ctlpkts; /* Ctrl frames sent to dongle */ + ulong rx_ctlerrs; /* Err of processing rx ctrl frames */ + ulong rx_ctlpkts; /* Ctrl frames processed from dongle */ + ulong rx_readahead_cnt; /* packets where header read-ahead was used */ +}; + +struct brcmf_fws_stats { + u32 tlv_parse_failed; + u32 tlv_invalid_type; + u32 header_only_pkt; + u32 header_pulls; + u32 pkt2bus; + u32 send_pkts[5]; + u32 requested_sent[5]; + u32 generic_error; + u32 mac_update_failed; + u32 mac_ps_update_failed; + u32 if_update_failed; + u32 packet_request_failed; + u32 credit_request_failed; + u32 rollback_success; + u32 rollback_failed; + u32 delayq_full_error; + u32 supprq_full_error; + u32 txs_indicate; + u32 txs_discard; + u32 txs_supp_core; + u32 txs_supp_ps; + u32 txs_tossed; + u32 txs_host_tossed; + u32 bus_flow_block; + u32 fws_flow_block; +}; + +struct brcmf_pub; +#ifdef DEBUG +void brcmf_debugfs_init(void); +void brcmf_debugfs_exit(void); +int brcmf_debugfs_attach(struct brcmf_pub *drvr); +void brcmf_debugfs_detach(struct brcmf_pub *drvr); +struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr); +void brcmf_debugfs_create_sdio_count(struct brcmf_pub *drvr, + struct brcmf_sdio_count *sdcnt); +void brcmf_debugfs_create_fws_stats(struct brcmf_pub *drvr, + struct brcmf_fws_stats *stats); +#else +static inline void brcmf_debugfs_init(void) +{ +} +static inline void brcmf_debugfs_exit(void) +{ +} +static inline int brcmf_debugfs_attach(struct brcmf_pub *drvr) +{ + return 0; +} +static inline void brcmf_debugfs_detach(struct brcmf_pub *drvr) +{ +} +static inline void brcmf_debugfs_create_fws_stats(struct brcmf_pub *drvr, + struct brcmf_fws_stats *stats) +{ +} +#endif + +#endif /* _BRCMF_DBG_H_ */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c new file mode 100644 index 00000000000..09dd8c13d84 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c @@ -0,0 +1,1123 @@ +/* + * Copyright (c) 2010 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <linux/kernel.h> +#include <linux/etherdevice.h> +#include <linux/module.h> +#include <net/cfg80211.h> +#include <net/rtnetlink.h> +#include <brcmu_utils.h> +#include <brcmu_wifi.h> + +#include "dhd.h" +#include "dhd_bus.h" +#include "dhd_dbg.h" +#include "fwil_types.h" +#include "p2p.h" +#include "wl_cfg80211.h" +#include "fwil.h" +#include "fwsignal.h" +#include "proto.h" + +MODULE_AUTHOR("Broadcom Corporation"); +MODULE_DESCRIPTION("Broadcom 802.11 wireless LAN fullmac driver."); +MODULE_LICENSE("Dual BSD/GPL"); + +#define MAX_WAIT_FOR_8021X_TX 50 /* msecs */ + +/* AMPDU rx reordering definitions */ +#define BRCMF_RXREORDER_FLOWID_OFFSET 0 +#define BRCMF_RXREORDER_MAXIDX_OFFSET 2 +#define BRCMF_RXREORDER_FLAGS_OFFSET 4 +#define BRCMF_RXREORDER_CURIDX_OFFSET 6 +#define BRCMF_RXREORDER_EXPIDX_OFFSET 8 + +#define BRCMF_RXREORDER_DEL_FLOW 0x01 +#define BRCMF_RXREORDER_FLUSH_ALL 0x02 +#define BRCMF_RXREORDER_CURIDX_VALID 0x04 +#define BRCMF_RXREORDER_EXPIDX_VALID 0x08 +#define BRCMF_RXREORDER_NEW_HOLE 0x10 + +/* Error bits */ +int brcmf_msg_level; +module_param_named(debug, brcmf_msg_level, int, S_IRUSR | S_IWUSR); +MODULE_PARM_DESC(debug, "level of debug output"); + +/* P2P0 enable */ +static int brcmf_p2p_enable; +#ifdef CONFIG_BRCMDBG +module_param_named(p2pon, brcmf_p2p_enable, int, 0); +MODULE_PARM_DESC(p2pon, "enable p2p management functionality"); +#endif + +char *brcmf_ifname(struct brcmf_pub *drvr, int ifidx) +{ + if (ifidx < 0 || ifidx >= BRCMF_MAX_IFS) { + brcmf_err("ifidx %d out of range\n", ifidx); + return "<if_bad>"; + } + + if (drvr->iflist[ifidx] == NULL) { + brcmf_err("null i/f %d\n", ifidx); + return "<if_null>"; + } + + if (drvr->iflist[ifidx]->ndev) + return drvr->iflist[ifidx]->ndev->name; + + return "<if_none>"; +} + +static void _brcmf_set_multicast_list(struct work_struct *work) +{ + struct brcmf_if *ifp; + struct net_device *ndev; + struct netdev_hw_addr *ha; + u32 cmd_value, cnt; + __le32 cnt_le; + char *buf, *bufp; + u32 buflen; + s32 err; + + ifp = container_of(work, struct brcmf_if, multicast_work); + + brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx); + + ndev = ifp->ndev; + + /* Determine initial value of allmulti flag */ + cmd_value = (ndev->flags & IFF_ALLMULTI) ? true : false; + + /* Send down the multicast list first. */ + cnt = netdev_mc_count(ndev); + buflen = sizeof(cnt) + (cnt * ETH_ALEN); + buf = kmalloc(buflen, GFP_ATOMIC); + if (!buf) + return; + bufp = buf; + + cnt_le = cpu_to_le32(cnt); + memcpy(bufp, &cnt_le, sizeof(cnt_le)); + bufp += sizeof(cnt_le); + + netdev_for_each_mc_addr(ha, ndev) { + if (!cnt) + break; + memcpy(bufp, ha->addr, ETH_ALEN); + bufp += ETH_ALEN; + cnt--; + } + + err = brcmf_fil_iovar_data_set(ifp, "mcast_list", buf, buflen); + if (err < 0) { + brcmf_err("Setting mcast_list failed, %d\n", err); + cmd_value = cnt ? true : cmd_value; + } + + kfree(buf); + + /* + * Now send the allmulti setting. This is based on the setting in the + * net_device flags, but might be modified above to be turned on if we + * were trying to set some addresses and dongle rejected it... + */ + err = brcmf_fil_iovar_int_set(ifp, "allmulti", cmd_value); + if (err < 0) + brcmf_err("Setting allmulti failed, %d\n", err); + + /*Finally, pick up the PROMISC flag */ + cmd_value = (ndev->flags & IFF_PROMISC) ? true : false; + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PROMISC, cmd_value); + if (err < 0) + brcmf_err("Setting BRCMF_C_SET_PROMISC failed, %d\n", + err); +} + +static void +_brcmf_set_mac_address(struct work_struct *work) +{ + struct brcmf_if *ifp; + s32 err; + + ifp = container_of(work, struct brcmf_if, setmacaddr_work); + + brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx); + + err = brcmf_fil_iovar_data_set(ifp, "cur_etheraddr", ifp->mac_addr, + ETH_ALEN); + if (err < 0) { + brcmf_err("Setting cur_etheraddr failed, %d\n", err); + } else { + brcmf_dbg(TRACE, "MAC address updated to %pM\n", + ifp->mac_addr); + memcpy(ifp->ndev->dev_addr, ifp->mac_addr, ETH_ALEN); + } +} + +static int brcmf_netdev_set_mac_address(struct net_device *ndev, void *addr) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + struct sockaddr *sa = (struct sockaddr *)addr; + + memcpy(&ifp->mac_addr, sa->sa_data, ETH_ALEN); + schedule_work(&ifp->setmacaddr_work); + return 0; +} + +static void brcmf_netdev_set_multicast_list(struct net_device *ndev) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + + schedule_work(&ifp->multicast_work); +} + +static netdev_tx_t brcmf_netdev_start_xmit(struct sk_buff *skb, + struct net_device *ndev) +{ + int ret; + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_pub *drvr = ifp->drvr; + struct ethhdr *eh = (struct ethhdr *)(skb->data); + + brcmf_dbg(DATA, "Enter, idx=%d\n", ifp->bssidx); + + /* Can the device send data? */ + if (drvr->bus_if->state != BRCMF_BUS_DATA) { + brcmf_err("xmit rejected state=%d\n", drvr->bus_if->state); + netif_stop_queue(ndev); + dev_kfree_skb(skb); + ret = -ENODEV; + goto done; + } + + if (!drvr->iflist[ifp->bssidx]) { + brcmf_err("bad ifidx %d\n", ifp->bssidx); + netif_stop_queue(ndev); + dev_kfree_skb(skb); + ret = -ENODEV; + goto done; + } + + /* Make sure there's enough room for any header */ + if (skb_headroom(skb) < drvr->hdrlen) { + struct sk_buff *skb2; + + brcmf_dbg(INFO, "%s: insufficient headroom\n", + brcmf_ifname(drvr, ifp->bssidx)); + drvr->bus_if->tx_realloc++; + skb2 = skb_realloc_headroom(skb, drvr->hdrlen); + dev_kfree_skb(skb); + skb = skb2; + if (skb == NULL) { + brcmf_err("%s: skb_realloc_headroom failed\n", + brcmf_ifname(drvr, ifp->bssidx)); + ret = -ENOMEM; + goto done; + } + } + + /* validate length for ether packet */ + if (skb->len < sizeof(*eh)) { + ret = -EINVAL; + dev_kfree_skb(skb); + goto done; + } + + if (eh->h_proto == htons(ETH_P_PAE)) + atomic_inc(&ifp->pend_8021x_cnt); + + ret = brcmf_fws_process_skb(ifp, skb); + +done: + if (ret) { + ifp->stats.tx_dropped++; + } else { + ifp->stats.tx_packets++; + ifp->stats.tx_bytes += skb->len; + } + + /* Return ok: we always eat the packet */ + return NETDEV_TX_OK; +} + +void brcmf_txflowblock_if(struct brcmf_if *ifp, + enum brcmf_netif_stop_reason reason, bool state) +{ + unsigned long flags; + + if (!ifp || !ifp->ndev) + return; + + brcmf_dbg(TRACE, "enter: idx=%d stop=0x%X reason=%d state=%d\n", + ifp->bssidx, ifp->netif_stop, reason, state); + + spin_lock_irqsave(&ifp->netif_stop_lock, flags); + if (state) { + if (!ifp->netif_stop) + netif_stop_queue(ifp->ndev); + ifp->netif_stop |= reason; + } else { + ifp->netif_stop &= ~reason; + if (!ifp->netif_stop) + netif_wake_queue(ifp->ndev); + } + spin_unlock_irqrestore(&ifp->netif_stop_lock, flags); +} + +void brcmf_txflowblock(struct device *dev, bool state) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pub *drvr = bus_if->drvr; + + brcmf_dbg(TRACE, "Enter\n"); + + brcmf_fws_bus_blocked(drvr, state); +} + +static void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb) +{ + skb->dev = ifp->ndev; + skb->protocol = eth_type_trans(skb, skb->dev); + + if (skb->pkt_type == PACKET_MULTICAST) + ifp->stats.multicast++; + + /* Process special event packets */ + brcmf_fweh_process_skb(ifp->drvr, skb); + + if (!(ifp->ndev->flags & IFF_UP)) { + brcmu_pkt_buf_free_skb(skb); + return; + } + + ifp->stats.rx_bytes += skb->len; + ifp->stats.rx_packets++; + + brcmf_dbg(DATA, "rx proto=0x%X\n", ntohs(skb->protocol)); + if (in_interrupt()) + netif_rx(skb); + else + /* If the receive is not processed inside an ISR, + * the softirqd must be woken explicitly to service + * the NET_RX_SOFTIRQ. This is handled by netif_rx_ni(). + */ + netif_rx_ni(skb); +} + +static void brcmf_rxreorder_get_skb_list(struct brcmf_ampdu_rx_reorder *rfi, + u8 start, u8 end, + struct sk_buff_head *skb_list) +{ + /* initialize return list */ + __skb_queue_head_init(skb_list); + + if (rfi->pend_pkts == 0) { + brcmf_dbg(INFO, "no packets in reorder queue\n"); + return; + } + + do { + if (rfi->pktslots[start]) { + __skb_queue_tail(skb_list, rfi->pktslots[start]); + rfi->pktslots[start] = NULL; + } + start++; + if (start > rfi->max_idx) + start = 0; + } while (start != end); + rfi->pend_pkts -= skb_queue_len(skb_list); +} + +static void brcmf_rxreorder_process_info(struct brcmf_if *ifp, u8 *reorder_data, + struct sk_buff *pkt) +{ + u8 flow_id, max_idx, cur_idx, exp_idx, end_idx; + struct brcmf_ampdu_rx_reorder *rfi; + struct sk_buff_head reorder_list; + struct sk_buff *pnext; + u8 flags; + u32 buf_size; + + flow_id = reorder_data[BRCMF_RXREORDER_FLOWID_OFFSET]; + flags = reorder_data[BRCMF_RXREORDER_FLAGS_OFFSET]; + + /* validate flags and flow id */ + if (flags == 0xFF) { + brcmf_err("invalid flags...so ignore this packet\n"); + brcmf_netif_rx(ifp, pkt); + return; + } + + rfi = ifp->drvr->reorder_flows[flow_id]; + if (flags & BRCMF_RXREORDER_DEL_FLOW) { + brcmf_dbg(INFO, "flow-%d: delete\n", + flow_id); + + if (rfi == NULL) { + brcmf_dbg(INFO, "received flags to cleanup, but no flow (%d) yet\n", + flow_id); + brcmf_netif_rx(ifp, pkt); + return; + } + + brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, rfi->exp_idx, + &reorder_list); + /* add the last packet */ + __skb_queue_tail(&reorder_list, pkt); + kfree(rfi); + ifp->drvr->reorder_flows[flow_id] = NULL; + goto netif_rx; + } + /* from here on we need a flow reorder instance */ + if (rfi == NULL) { + buf_size = sizeof(*rfi); + max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET]; + + buf_size += (max_idx + 1) * sizeof(pkt); + + /* allocate space for flow reorder info */ + brcmf_dbg(INFO, "flow-%d: start, maxidx %d\n", + flow_id, max_idx); + rfi = kzalloc(buf_size, GFP_ATOMIC); + if (rfi == NULL) { + brcmf_err("failed to alloc buffer\n"); + brcmf_netif_rx(ifp, pkt); + return; + } + + ifp->drvr->reorder_flows[flow_id] = rfi; + rfi->pktslots = (struct sk_buff **)(rfi+1); + rfi->max_idx = max_idx; + } + if (flags & BRCMF_RXREORDER_NEW_HOLE) { + if (rfi->pend_pkts) { + brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, + rfi->exp_idx, + &reorder_list); + WARN_ON(rfi->pend_pkts); + } else { + __skb_queue_head_init(&reorder_list); + } + rfi->cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET]; + rfi->exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET]; + rfi->max_idx = reorder_data[BRCMF_RXREORDER_MAXIDX_OFFSET]; + rfi->pktslots[rfi->cur_idx] = pkt; + rfi->pend_pkts++; + brcmf_dbg(DATA, "flow-%d: new hole %d (%d), pending %d\n", + flow_id, rfi->cur_idx, rfi->exp_idx, rfi->pend_pkts); + } else if (flags & BRCMF_RXREORDER_CURIDX_VALID) { + cur_idx = reorder_data[BRCMF_RXREORDER_CURIDX_OFFSET]; + exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET]; + + if ((exp_idx == rfi->exp_idx) && (cur_idx != rfi->exp_idx)) { + /* still in the current hole */ + /* enqueue the current on the buffer chain */ + if (rfi->pktslots[cur_idx] != NULL) { + brcmf_dbg(INFO, "HOLE: ERROR buffer pending..free it\n"); + brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]); + rfi->pktslots[cur_idx] = NULL; + } + rfi->pktslots[cur_idx] = pkt; + rfi->pend_pkts++; + rfi->cur_idx = cur_idx; + brcmf_dbg(DATA, "flow-%d: store pkt %d (%d), pending %d\n", + flow_id, cur_idx, exp_idx, rfi->pend_pkts); + + /* can return now as there is no reorder + * list to process. + */ + return; + } + if (rfi->exp_idx == cur_idx) { + if (rfi->pktslots[cur_idx] != NULL) { + brcmf_dbg(INFO, "error buffer pending..free it\n"); + brcmu_pkt_buf_free_skb(rfi->pktslots[cur_idx]); + rfi->pktslots[cur_idx] = NULL; + } + rfi->pktslots[cur_idx] = pkt; + rfi->pend_pkts++; + + /* got the expected one. flush from current to expected + * and update expected + */ + brcmf_dbg(DATA, "flow-%d: expected %d (%d), pending %d\n", + flow_id, cur_idx, exp_idx, rfi->pend_pkts); + + rfi->cur_idx = cur_idx; + rfi->exp_idx = exp_idx; + + brcmf_rxreorder_get_skb_list(rfi, cur_idx, exp_idx, + &reorder_list); + brcmf_dbg(DATA, "flow-%d: freeing buffers %d, pending %d\n", + flow_id, skb_queue_len(&reorder_list), + rfi->pend_pkts); + } else { + u8 end_idx; + + brcmf_dbg(DATA, "flow-%d (0x%x): both moved, old %d/%d, new %d/%d\n", + flow_id, flags, rfi->cur_idx, rfi->exp_idx, + cur_idx, exp_idx); + if (flags & BRCMF_RXREORDER_FLUSH_ALL) + end_idx = rfi->exp_idx; + else + end_idx = exp_idx; + + /* flush pkts first */ + brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx, + &reorder_list); + + if (exp_idx == ((cur_idx + 1) % (rfi->max_idx + 1))) { + __skb_queue_tail(&reorder_list, pkt); + } else { + rfi->pktslots[cur_idx] = pkt; + rfi->pend_pkts++; + } + rfi->exp_idx = exp_idx; + rfi->cur_idx = cur_idx; + } + } else { + /* explicity window move updating the expected index */ + exp_idx = reorder_data[BRCMF_RXREORDER_EXPIDX_OFFSET]; + + brcmf_dbg(DATA, "flow-%d (0x%x): change expected: %d -> %d\n", + flow_id, flags, rfi->exp_idx, exp_idx); + if (flags & BRCMF_RXREORDER_FLUSH_ALL) + end_idx = rfi->exp_idx; + else + end_idx = exp_idx; + + brcmf_rxreorder_get_skb_list(rfi, rfi->exp_idx, end_idx, + &reorder_list); + __skb_queue_tail(&reorder_list, pkt); + /* set the new expected idx */ + rfi->exp_idx = exp_idx; + } +netif_rx: + skb_queue_walk_safe(&reorder_list, pkt, pnext) { + __skb_unlink(pkt, &reorder_list); + brcmf_netif_rx(ifp, pkt); + } +} + +void brcmf_rx_frame(struct device *dev, struct sk_buff *skb) +{ + struct brcmf_if *ifp; + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pub *drvr = bus_if->drvr; + struct brcmf_skb_reorder_data *rd; + u8 ifidx; + int ret; + + brcmf_dbg(DATA, "Enter: %s: rxp=%p\n", dev_name(dev), skb); + + /* process and remove protocol-specific header */ + ret = brcmf_proto_hdrpull(drvr, true, &ifidx, skb); + ifp = drvr->iflist[ifidx]; + + if (ret || !ifp || !ifp->ndev) { + if ((ret != -ENODATA) && ifp) + ifp->stats.rx_errors++; + brcmu_pkt_buf_free_skb(skb); + return; + } + + rd = (struct brcmf_skb_reorder_data *)skb->cb; + if (rd->reorder) + brcmf_rxreorder_process_info(ifp, rd->reorder, skb); + else + brcmf_netif_rx(ifp, skb); +} + +void brcmf_txfinalize(struct brcmf_pub *drvr, struct sk_buff *txp, u8 ifidx, + bool success) +{ + struct brcmf_if *ifp; + struct ethhdr *eh; + u16 type; + + ifp = drvr->iflist[ifidx]; + if (!ifp) + goto done; + + eh = (struct ethhdr *)(txp->data); + type = ntohs(eh->h_proto); + + if (type == ETH_P_PAE) { + atomic_dec(&ifp->pend_8021x_cnt); + if (waitqueue_active(&ifp->pend_8021x_wait)) + wake_up(&ifp->pend_8021x_wait); + } + + if (!success) + ifp->stats.tx_errors++; +done: + brcmu_pkt_buf_free_skb(txp); +} + +void brcmf_txcomplete(struct device *dev, struct sk_buff *txp, bool success) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pub *drvr = bus_if->drvr; + u8 ifidx; + + /* await txstatus signal for firmware if active */ + if (brcmf_fws_fc_active(drvr->fws)) { + if (!success) + brcmf_fws_bustxfail(drvr->fws, txp); + } else { + if (brcmf_proto_hdrpull(drvr, false, &ifidx, txp)) + brcmu_pkt_buf_free_skb(txp); + else + brcmf_txfinalize(drvr, txp, ifidx, success); + } +} + +static struct net_device_stats *brcmf_netdev_get_stats(struct net_device *ndev) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + + brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx); + + return &ifp->stats; +} + +static void brcmf_ethtool_get_drvinfo(struct net_device *ndev, + struct ethtool_drvinfo *info) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_pub *drvr = ifp->drvr; + + strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); + snprintf(info->version, sizeof(info->version), "n/a"); + strlcpy(info->fw_version, drvr->fwver, sizeof(info->fw_version)); + strlcpy(info->bus_info, dev_name(drvr->bus_if->dev), + sizeof(info->bus_info)); +} + +static const struct ethtool_ops brcmf_ethtool_ops = { + .get_drvinfo = brcmf_ethtool_get_drvinfo, +}; + +static int brcmf_netdev_stop(struct net_device *ndev) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + + brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx); + + brcmf_cfg80211_down(ndev); + + /* Set state and stop OS transmissions */ + netif_stop_queue(ndev); + + return 0; +} + +static int brcmf_netdev_open(struct net_device *ndev) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_pub *drvr = ifp->drvr; + struct brcmf_bus *bus_if = drvr->bus_if; + u32 toe_ol; + + brcmf_dbg(TRACE, "Enter, idx=%d\n", ifp->bssidx); + + /* If bus is not ready, can't continue */ + if (bus_if->state != BRCMF_BUS_DATA) { + brcmf_err("failed bus is not ready\n"); + return -EAGAIN; + } + + atomic_set(&ifp->pend_8021x_cnt, 0); + + /* Get current TOE mode from dongle */ + if (brcmf_fil_iovar_int_get(ifp, "toe_ol", &toe_ol) >= 0 + && (toe_ol & TOE_TX_CSUM_OL) != 0) + ndev->features |= NETIF_F_IP_CSUM; + else + ndev->features &= ~NETIF_F_IP_CSUM; + + if (brcmf_cfg80211_up(ndev)) { + brcmf_err("failed to bring up cfg80211\n"); + return -EIO; + } + + /* Allow transmit calls */ + netif_start_queue(ndev); + return 0; +} + +static const struct net_device_ops brcmf_netdev_ops_pri = { + .ndo_open = brcmf_netdev_open, + .ndo_stop = brcmf_netdev_stop, + .ndo_get_stats = brcmf_netdev_get_stats, + .ndo_start_xmit = brcmf_netdev_start_xmit, + .ndo_set_mac_address = brcmf_netdev_set_mac_address, + .ndo_set_rx_mode = brcmf_netdev_set_multicast_list +}; + +int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked) +{ + struct brcmf_pub *drvr = ifp->drvr; + struct net_device *ndev; + s32 err; + + brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx, + ifp->mac_addr); + ndev = ifp->ndev; + + /* set appropriate operations */ + ndev->netdev_ops = &brcmf_netdev_ops_pri; + + ndev->hard_header_len += drvr->hdrlen; + ndev->ethtool_ops = &brcmf_ethtool_ops; + + drvr->rxsz = ndev->mtu + ndev->hard_header_len + + drvr->hdrlen; + + /* set the mac address */ + memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN); + + INIT_WORK(&ifp->setmacaddr_work, _brcmf_set_mac_address); + INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list); + + if (rtnl_locked) + err = register_netdevice(ndev); + else + err = register_netdev(ndev); + if (err != 0) { + brcmf_err("couldn't register the net device\n"); + goto fail; + } + + brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); + + ndev->destructor = brcmf_cfg80211_free_netdev; + return 0; + +fail: + drvr->iflist[ifp->bssidx] = NULL; + ndev->netdev_ops = NULL; + free_netdev(ndev); + return -EBADE; +} + +static int brcmf_net_p2p_open(struct net_device *ndev) +{ + brcmf_dbg(TRACE, "Enter\n"); + + return brcmf_cfg80211_up(ndev); +} + +static int brcmf_net_p2p_stop(struct net_device *ndev) +{ + brcmf_dbg(TRACE, "Enter\n"); + + return brcmf_cfg80211_down(ndev); +} + +static netdev_tx_t brcmf_net_p2p_start_xmit(struct sk_buff *skb, + struct net_device *ndev) +{ + if (skb) + dev_kfree_skb_any(skb); + + return NETDEV_TX_OK; +} + +static const struct net_device_ops brcmf_netdev_ops_p2p = { + .ndo_open = brcmf_net_p2p_open, + .ndo_stop = brcmf_net_p2p_stop, + .ndo_start_xmit = brcmf_net_p2p_start_xmit +}; + +static int brcmf_net_p2p_attach(struct brcmf_if *ifp) +{ + struct net_device *ndev; + + brcmf_dbg(TRACE, "Enter, idx=%d mac=%pM\n", ifp->bssidx, + ifp->mac_addr); + ndev = ifp->ndev; + + ndev->netdev_ops = &brcmf_netdev_ops_p2p; + + /* set the mac address */ + memcpy(ndev->dev_addr, ifp->mac_addr, ETH_ALEN); + + if (register_netdev(ndev) != 0) { + brcmf_err("couldn't register the p2p net device\n"); + goto fail; + } + + brcmf_dbg(INFO, "%s: Broadcom Dongle Host Driver\n", ndev->name); + + return 0; + +fail: + ifp->drvr->iflist[ifp->bssidx] = NULL; + ndev->netdev_ops = NULL; + free_netdev(ndev); + return -EBADE; +} + +struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bssidx, s32 ifidx, + char *name, u8 *mac_addr) +{ + struct brcmf_if *ifp; + struct net_device *ndev; + + brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifidx); + + ifp = drvr->iflist[bssidx]; + /* + * Delete the existing interface before overwriting it + * in case we missed the BRCMF_E_IF_DEL event. + */ + if (ifp) { + brcmf_err("ERROR: netdev:%s already exists\n", + ifp->ndev->name); + if (ifidx) { + netif_stop_queue(ifp->ndev); + unregister_netdev(ifp->ndev); + free_netdev(ifp->ndev); + drvr->iflist[bssidx] = NULL; + } else { + brcmf_err("ignore IF event\n"); + return ERR_PTR(-EINVAL); + } + } + + if (!brcmf_p2p_enable && bssidx == 1) { + /* this is P2P_DEVICE interface */ + brcmf_dbg(INFO, "allocate non-netdev interface\n"); + ifp = kzalloc(sizeof(*ifp), GFP_KERNEL); + if (!ifp) + return ERR_PTR(-ENOMEM); + } else { + brcmf_dbg(INFO, "allocate netdev interface\n"); + /* Allocate netdev, including space for private structure */ + ndev = alloc_netdev(sizeof(*ifp), name, ether_setup); + if (!ndev) + return ERR_PTR(-ENOMEM); + + ifp = netdev_priv(ndev); + ifp->ndev = ndev; + } + + ifp->drvr = drvr; + drvr->iflist[bssidx] = ifp; + ifp->ifidx = ifidx; + ifp->bssidx = bssidx; + + init_waitqueue_head(&ifp->pend_8021x_wait); + spin_lock_init(&ifp->netif_stop_lock); + + if (mac_addr != NULL) + memcpy(ifp->mac_addr, mac_addr, ETH_ALEN); + + brcmf_dbg(TRACE, " ==== pid:%x, if:%s (%pM) created ===\n", + current->pid, name, ifp->mac_addr); + + return ifp; +} + +void brcmf_del_if(struct brcmf_pub *drvr, s32 bssidx) +{ + struct brcmf_if *ifp; + + ifp = drvr->iflist[bssidx]; + drvr->iflist[bssidx] = NULL; + if (!ifp) { + brcmf_err("Null interface, idx=%d\n", bssidx); + return; + } + brcmf_dbg(TRACE, "Enter, idx=%d, ifidx=%d\n", bssidx, ifp->ifidx); + if (ifp->ndev) { + if (bssidx == 0) { + if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { + rtnl_lock(); + brcmf_netdev_stop(ifp->ndev); + rtnl_unlock(); + } + } else { + netif_stop_queue(ifp->ndev); + } + + if (ifp->ndev->netdev_ops == &brcmf_netdev_ops_pri) { + cancel_work_sync(&ifp->setmacaddr_work); + cancel_work_sync(&ifp->multicast_work); + } + /* unregister will take care of freeing it */ + unregister_netdev(ifp->ndev); + } else { + kfree(ifp); + } +} + +int brcmf_attach(struct device *dev) +{ + struct brcmf_pub *drvr = NULL; + int ret = 0; + + brcmf_dbg(TRACE, "Enter\n"); + + /* Allocate primary brcmf_info */ + drvr = kzalloc(sizeof(struct brcmf_pub), GFP_ATOMIC); + if (!drvr) + return -ENOMEM; + + mutex_init(&drvr->proto_block); + + /* Link to bus module */ + drvr->hdrlen = 0; + drvr->bus_if = dev_get_drvdata(dev); + drvr->bus_if->drvr = drvr; + + /* create device debugfs folder */ + brcmf_debugfs_attach(drvr); + + /* Attach and link in the protocol */ + ret = brcmf_proto_attach(drvr); + if (ret != 0) { + brcmf_err("brcmf_prot_attach failed\n"); + goto fail; + } + + /* attach firmware event handler */ + brcmf_fweh_attach(drvr); + + return ret; + +fail: + brcmf_detach(dev); + + return ret; +} + +int brcmf_bus_start(struct device *dev) +{ + int ret = -1; + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pub *drvr = bus_if->drvr; + struct brcmf_if *ifp; + struct brcmf_if *p2p_ifp; + + brcmf_dbg(TRACE, "\n"); + + /* add primary networking interface */ + ifp = brcmf_add_if(drvr, 0, 0, "wlan%d", NULL); + if (IS_ERR(ifp)) + return PTR_ERR(ifp); + + if (brcmf_p2p_enable) + p2p_ifp = brcmf_add_if(drvr, 1, 0, "p2p%d", NULL); + else + p2p_ifp = NULL; + if (IS_ERR(p2p_ifp)) + p2p_ifp = NULL; + + /* signal bus ready */ + brcmf_bus_change_state(bus_if, BRCMF_BUS_DATA); + + /* Bus is ready, do any initialization */ + ret = brcmf_c_preinit_dcmds(ifp); + if (ret < 0) + goto fail; + + ret = brcmf_fws_init(drvr); + if (ret < 0) + goto fail; + + brcmf_fws_add_interface(ifp); + + drvr->config = brcmf_cfg80211_attach(drvr, bus_if->dev); + if (drvr->config == NULL) { + ret = -ENOMEM; + goto fail; + } + + ret = brcmf_fweh_activate_events(ifp); + if (ret < 0) + goto fail; + + ret = brcmf_net_attach(ifp, false); +fail: + if (ret < 0) { + brcmf_err("failed: %d\n", ret); + brcmf_cfg80211_detach(drvr->config); + if (drvr->fws) { + brcmf_fws_del_interface(ifp); + brcmf_fws_deinit(drvr); + } + if (drvr->iflist[0]) { + free_netdev(ifp->ndev); + drvr->iflist[0] = NULL; + } + if (p2p_ifp) { + free_netdev(p2p_ifp->ndev); + drvr->iflist[1] = NULL; + } + return ret; + } + if ((brcmf_p2p_enable) && (p2p_ifp)) + if (brcmf_net_p2p_attach(p2p_ifp) < 0) + brcmf_p2p_enable = 0; + + return 0; +} + +void brcmf_bus_add_txhdrlen(struct device *dev, uint len) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pub *drvr = bus_if->drvr; + + if (drvr) { + drvr->hdrlen += len; + } +} + +static void brcmf_bus_detach(struct brcmf_pub *drvr) +{ + brcmf_dbg(TRACE, "Enter\n"); + + if (drvr) { + /* Stop the bus module */ + brcmf_bus_stop(drvr->bus_if); + } +} + +void brcmf_dev_reset(struct device *dev) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pub *drvr = bus_if->drvr; + + if (drvr == NULL) + return; + + if (drvr->iflist[0]) + brcmf_fil_cmd_int_set(drvr->iflist[0], BRCMF_C_TERMINATED, 1); +} + +void brcmf_detach(struct device *dev) +{ + s32 i; + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_pub *drvr = bus_if->drvr; + + brcmf_dbg(TRACE, "Enter\n"); + + if (drvr == NULL) + return; + + /* stop firmware event handling */ + brcmf_fweh_detach(drvr); + + brcmf_bus_change_state(bus_if, BRCMF_BUS_DOWN); + + /* make sure primary interface removed last */ + for (i = BRCMF_MAX_IFS-1; i > -1; i--) + if (drvr->iflist[i]) { + brcmf_fws_del_interface(drvr->iflist[i]); + brcmf_del_if(drvr, i); + } + + brcmf_cfg80211_detach(drvr->config); + + brcmf_fws_deinit(drvr); + + brcmf_bus_detach(drvr); + + brcmf_proto_detach(drvr); + + brcmf_debugfs_detach(drvr); + bus_if->drvr = NULL; + kfree(drvr); +} + +s32 brcmf_iovar_data_set(struct device *dev, char *name, void *data, u32 len) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_if *ifp = bus_if->drvr->iflist[0]; + + return brcmf_fil_iovar_data_set(ifp, name, data, len); +} + +static int brcmf_get_pend_8021x_cnt(struct brcmf_if *ifp) +{ + return atomic_read(&ifp->pend_8021x_cnt); +} + +int brcmf_netdev_wait_pend8021x(struct net_device *ndev) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + int err; + + err = wait_event_timeout(ifp->pend_8021x_wait, + !brcmf_get_pend_8021x_cnt(ifp), + msecs_to_jiffies(MAX_WAIT_FOR_8021X_TX)); + + WARN_ON(!err); + + return !err; +} + +/* + * return chip id and rev of the device encoded in u32. + */ +u32 brcmf_get_chip_info(struct brcmf_if *ifp) +{ + struct brcmf_bus *bus = ifp->drvr->bus_if; + + return bus->chip << 4 | bus->chiprev; +} + +static void brcmf_driver_register(struct work_struct *work) +{ +#ifdef CONFIG_BRCMFMAC_SDIO + brcmf_sdio_register(); +#endif +#ifdef CONFIG_BRCMFMAC_USB + brcmf_usb_register(); +#endif +} +static DECLARE_WORK(brcmf_driver_work, brcmf_driver_register); + +static int __init brcmfmac_module_init(void) +{ + brcmf_debugfs_init(); +#ifdef CONFIG_BRCMFMAC_SDIO + brcmf_sdio_init(); +#endif + if (!schedule_work(&brcmf_driver_work)) + return -EBUSY; + + return 0; +} + +static void __exit brcmfmac_module_exit(void) +{ + cancel_work_sync(&brcmf_driver_work); + +#ifdef CONFIG_BRCMFMAC_SDIO + brcmf_sdio_exit(); +#endif +#ifdef CONFIG_BRCMFMAC_USB + brcmf_usb_exit(); +#endif + brcmf_debugfs_exit(); +} + +module_init(brcmfmac_module_init); +module_exit(brcmfmac_module_exit); diff --git a/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c b/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c new file mode 100644 index 00000000000..8fa0dbbbda7 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/dhd_sdio.c @@ -0,0 +1,4224 @@ +/* + * Copyright (c) 2010 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <linux/types.h> +#include <linux/kernel.h> +#include <linux/kthread.h> +#include <linux/printk.h> +#include <linux/pci_ids.h> +#include <linux/netdevice.h> +#include <linux/interrupt.h> +#include <linux/sched.h> +#include <linux/mmc/sdio.h> +#include <linux/mmc/sdio_ids.h> +#include <linux/mmc/sdio_func.h> +#include <linux/mmc/card.h> +#include <linux/semaphore.h> +#include <linux/firmware.h> +#include <linux/module.h> +#include <linux/bcma/bcma.h> +#include <linux/debugfs.h> +#include <linux/vmalloc.h> +#include <linux/platform_data/brcmfmac-sdio.h> +#include <linux/moduleparam.h> +#include <asm/unaligned.h> +#include <defs.h> +#include <brcmu_wifi.h> +#include <brcmu_utils.h> +#include <brcm_hw_ids.h> +#include <soc.h> +#include "sdio_host.h" +#include "chip.h" +#include "firmware.h" + +#define DCMD_RESP_TIMEOUT 2000 /* In milli second */ + +#ifdef DEBUG + +#define BRCMF_TRAP_INFO_SIZE 80 + +#define CBUF_LEN (128) + +/* Device console log buffer state */ +#define CONSOLE_BUFFER_MAX 2024 + +struct rte_log_le { + __le32 buf; /* Can't be pointer on (64-bit) hosts */ + __le32 buf_size; + __le32 idx; + char *_buf_compat; /* Redundant pointer for backward compat. */ +}; + +struct rte_console { + /* Virtual UART + * When there is no UART (e.g. Quickturn), + * the host should write a complete + * input line directly into cbuf and then write + * the length into vcons_in. + * This may also be used when there is a real UART + * (at risk of conflicting with + * the real UART). vcons_out is currently unused. + */ + uint vcons_in; + uint vcons_out; + + /* Output (logging) buffer + * Console output is written to a ring buffer log_buf at index log_idx. + * The host may read the output when it sees log_idx advance. + * Output will be lost if the output wraps around faster than the host + * polls. + */ + struct rte_log_le log_le; + + /* Console input line buffer + * Characters are read one at a time into cbuf + * until <CR> is received, then + * the buffer is processed as a command line. + * Also used for virtual UART. + */ + uint cbuf_idx; + char cbuf[CBUF_LEN]; +}; + +#endif /* DEBUG */ +#include <chipcommon.h> + +#include "dhd_bus.h" +#include "dhd_dbg.h" +#include "tracepoint.h" + +#define TXQLEN 2048 /* bulk tx queue length */ +#define TXHI (TXQLEN - 256) /* turn on flow control above TXHI */ +#define TXLOW (TXHI - 256) /* turn off flow control below TXLOW */ +#define PRIOMASK 7 + +#define TXRETRIES 2 /* # of retries for tx frames */ + +#define BRCMF_RXBOUND 50 /* Default for max rx frames in + one scheduling */ + +#define BRCMF_TXBOUND 20 /* Default for max tx frames in + one scheduling */ + +#define BRCMF_TXMINMAX 1 /* Max tx frames if rx still pending */ + +#define MEMBLOCK 2048 /* Block size used for downloading + of dongle image */ +#define MAX_DATA_BUF (32 * 1024) /* Must be large enough to hold + biggest possible glom */ + +#define BRCMF_FIRSTREAD (1 << 6) + + +/* SBSDIO_DEVICE_CTL */ + +/* 1: device will assert busy signal when receiving CMD53 */ +#define SBSDIO_DEVCTL_SETBUSY 0x01 +/* 1: assertion of sdio interrupt is synchronous to the sdio clock */ +#define SBSDIO_DEVCTL_SPI_INTR_SYNC 0x02 +/* 1: mask all interrupts to host except the chipActive (rev 8) */ +#define SBSDIO_DEVCTL_CA_INT_ONLY 0x04 +/* 1: isolate internal sdio signals, put external pads in tri-state; requires + * sdio bus power cycle to clear (rev 9) */ +#define SBSDIO_DEVCTL_PADS_ISO 0x08 +/* Force SD->SB reset mapping (rev 11) */ +#define SBSDIO_DEVCTL_SB_RST_CTL 0x30 +/* Determined by CoreControl bit */ +#define SBSDIO_DEVCTL_RST_CORECTL 0x00 +/* Force backplane reset */ +#define SBSDIO_DEVCTL_RST_BPRESET 0x10 +/* Force no backplane reset */ +#define SBSDIO_DEVCTL_RST_NOBPRESET 0x20 + +/* direct(mapped) cis space */ + +/* MAPPED common CIS address */ +#define SBSDIO_CIS_BASE_COMMON 0x1000 +/* maximum bytes in one CIS */ +#define SBSDIO_CIS_SIZE_LIMIT 0x200 +/* cis offset addr is < 17 bits */ +#define SBSDIO_CIS_OFT_ADDR_MASK 0x1FFFF + +/* manfid tuple length, include tuple, link bytes */ +#define SBSDIO_CIS_MANFID_TUPLE_LEN 6 + +#define CORE_BUS_REG(base, field) \ + (base + offsetof(struct sdpcmd_regs, field)) + +/* SDIO function 1 register CHIPCLKCSR */ +/* Force ALP request to backplane */ +#define SBSDIO_FORCE_ALP 0x01 +/* Force HT request to backplane */ +#define SBSDIO_FORCE_HT 0x02 +/* Force ILP request to backplane */ +#define SBSDIO_FORCE_ILP 0x04 +/* Make ALP ready (power up xtal) */ +#define SBSDIO_ALP_AVAIL_REQ 0x08 +/* Make HT ready (power up PLL) */ +#define SBSDIO_HT_AVAIL_REQ 0x10 +/* Squelch clock requests from HW */ +#define SBSDIO_FORCE_HW_CLKREQ_OFF 0x20 +/* Status: ALP is ready */ +#define SBSDIO_ALP_AVAIL 0x40 +/* Status: HT is ready */ +#define SBSDIO_HT_AVAIL 0x80 +#define SBSDIO_CSR_MASK 0x1F +#define SBSDIO_AVBITS (SBSDIO_HT_AVAIL | SBSDIO_ALP_AVAIL) +#define SBSDIO_ALPAV(regval) ((regval) & SBSDIO_AVBITS) +#define SBSDIO_HTAV(regval) (((regval) & SBSDIO_AVBITS) == SBSDIO_AVBITS) +#define SBSDIO_ALPONLY(regval) (SBSDIO_ALPAV(regval) && !SBSDIO_HTAV(regval)) +#define SBSDIO_CLKAV(regval, alponly) \ + (SBSDIO_ALPAV(regval) && (alponly ? 1 : SBSDIO_HTAV(regval))) + +/* intstatus */ +#define I_SMB_SW0 (1 << 0) /* To SB Mail S/W interrupt 0 */ +#define I_SMB_SW1 (1 << 1) /* To SB Mail S/W interrupt 1 */ +#define I_SMB_SW2 (1 << 2) /* To SB Mail S/W interrupt 2 */ +#define I_SMB_SW3 (1 << 3) /* To SB Mail S/W interrupt 3 */ +#define I_SMB_SW_MASK 0x0000000f /* To SB Mail S/W interrupts mask */ +#define I_SMB_SW_SHIFT 0 /* To SB Mail S/W interrupts shift */ +#define I_HMB_SW0 (1 << 4) /* To Host Mail S/W interrupt 0 */ +#define I_HMB_SW1 (1 << 5) /* To Host Mail S/W interrupt 1 */ +#define I_HMB_SW2 (1 << 6) /* To Host Mail S/W interrupt 2 */ +#define I_HMB_SW3 (1 << 7) /* To Host Mail S/W interrupt 3 */ +#define I_HMB_SW_MASK 0x000000f0 /* To Host Mail S/W interrupts mask */ +#define I_HMB_SW_SHIFT 4 /* To Host Mail S/W interrupts shift */ +#define I_WR_OOSYNC (1 << 8) /* Write Frame Out Of Sync */ +#define I_RD_OOSYNC (1 << 9) /* Read Frame Out Of Sync */ +#define I_PC (1 << 10) /* descriptor error */ +#define I_PD (1 << 11) /* data error */ +#define I_DE (1 << 12) /* Descriptor protocol Error */ +#define I_RU (1 << 13) /* Receive descriptor Underflow */ +#define I_RO (1 << 14) /* Receive fifo Overflow */ +#define I_XU (1 << 15) /* Transmit fifo Underflow */ +#define I_RI (1 << 16) /* Receive Interrupt */ +#define I_BUSPWR (1 << 17) /* SDIO Bus Power Change (rev 9) */ +#define I_XMTDATA_AVAIL (1 << 23) /* bits in fifo */ +#define I_XI (1 << 24) /* Transmit Interrupt */ +#define I_RF_TERM (1 << 25) /* Read Frame Terminate */ +#define I_WF_TERM (1 << 26) /* Write Frame Terminate */ +#define I_PCMCIA_XU (1 << 27) /* PCMCIA Transmit FIFO Underflow */ +#define I_SBINT (1 << 28) /* sbintstatus Interrupt */ +#define I_CHIPACTIVE (1 << 29) /* chip from doze to active state */ +#define I_SRESET (1 << 30) /* CCCR RES interrupt */ +#define I_IOE2 (1U << 31) /* CCCR IOE2 Bit Changed */ +#define I_ERRORS (I_PC | I_PD | I_DE | I_RU | I_RO | I_XU) +#define I_DMA (I_RI | I_XI | I_ERRORS) + +/* corecontrol */ +#define CC_CISRDY (1 << 0) /* CIS Ready */ +#define CC_BPRESEN (1 << 1) /* CCCR RES signal */ +#define CC_F2RDY (1 << 2) /* set CCCR IOR2 bit */ +#define CC_CLRPADSISO (1 << 3) /* clear SDIO pads isolation */ +#define CC_XMTDATAAVAIL_MODE (1 << 4) +#define CC_XMTDATAAVAIL_CTRL (1 << 5) + +/* SDA_FRAMECTRL */ +#define SFC_RF_TERM (1 << 0) /* Read Frame Terminate */ +#define SFC_WF_TERM (1 << 1) /* Write Frame Terminate */ +#define SFC_CRC4WOOS (1 << 2) /* CRC error for write out of sync */ +#define SFC_ABORTALL (1 << 3) /* Abort all in-progress frames */ + +/* + * Software allocation of To SB Mailbox resources + */ + +/* tosbmailbox bits corresponding to intstatus bits */ +#define SMB_NAK (1 << 0) /* Frame NAK */ +#define SMB_INT_ACK (1 << 1) /* Host Interrupt ACK */ +#define SMB_USE_OOB (1 << 2) /* Use OOB Wakeup */ +#define SMB_DEV_INT (1 << 3) /* Miscellaneous Interrupt */ + +/* tosbmailboxdata */ +#define SMB_DATA_VERSION_SHIFT 16 /* host protocol version */ + +/* + * Software allocation of To Host Mailbox resources + */ + +/* intstatus bits */ +#define I_HMB_FC_STATE I_HMB_SW0 /* Flow Control State */ +#define I_HMB_FC_CHANGE I_HMB_SW1 /* Flow Control State Changed */ +#define I_HMB_FRAME_IND I_HMB_SW2 /* Frame Indication */ +#define I_HMB_HOST_INT I_HMB_SW3 /* Miscellaneous Interrupt */ + +/* tohostmailboxdata */ +#define HMB_DATA_NAKHANDLED 1 /* retransmit NAK'd frame */ +#define HMB_DATA_DEVREADY 2 /* talk to host after enable */ +#define HMB_DATA_FC 4 /* per prio flowcontrol update flag */ +#define HMB_DATA_FWREADY 8 /* fw ready for protocol activity */ + +#define HMB_DATA_FCDATA_MASK 0xff000000 +#define HMB_DATA_FCDATA_SHIFT 24 + +#define HMB_DATA_VERSION_MASK 0x00ff0000 +#define HMB_DATA_VERSION_SHIFT 16 + +/* + * Software-defined protocol header + */ + +/* Current protocol version */ +#define SDPCM_PROT_VERSION 4 + +/* + * Shared structure between dongle and the host. + * The structure contains pointers to trap or assert information. + */ +#define SDPCM_SHARED_VERSION 0x0003 +#define SDPCM_SHARED_VERSION_MASK 0x00FF +#define SDPCM_SHARED_ASSERT_BUILT 0x0100 +#define SDPCM_SHARED_ASSERT 0x0200 +#define SDPCM_SHARED_TRAP 0x0400 + +/* Space for header read, limit for data packets */ +#define MAX_HDR_READ (1 << 6) +#define MAX_RX_DATASZ 2048 + +/* Bump up limit on waiting for HT to account for first startup; + * if the image is doing a CRC calculation before programming the PMU + * for HT availability, it could take a couple hundred ms more, so + * max out at a 1 second (1000000us). + */ +#undef PMU_MAX_TRANSITION_DLY +#define PMU_MAX_TRANSITION_DLY 1000000 + +/* Value for ChipClockCSR during initial setup */ +#define BRCMF_INIT_CLKCTL1 (SBSDIO_FORCE_HW_CLKREQ_OFF | \ + SBSDIO_ALP_AVAIL_REQ) + +/* Flags for SDH calls */ +#define F2SYNC (SDIO_REQ_4BYTE | SDIO_REQ_FIXED) + +#define BRCMF_IDLE_ACTIVE 0 /* Do not request any SD clock change + * when idle + */ +#define BRCMF_IDLE_INTERVAL 1 + +#define KSO_WAIT_US 50 +#define MAX_KSO_ATTEMPTS (PMU_MAX_TRANSITION_DLY/KSO_WAIT_US) + +/* + * Conversion of 802.1D priority to precedence level + */ +static uint prio2prec(u32 prio) +{ + return (prio == PRIO_8021D_NONE || prio == PRIO_8021D_BE) ? + (prio^2) : prio; +} + +#ifdef DEBUG +/* Device console log buffer state */ +struct brcmf_console { + uint count; /* Poll interval msec counter */ + uint log_addr; /* Log struct address (fixed) */ + struct rte_log_le log_le; /* Log struct (host copy) */ + uint bufsize; /* Size of log buffer */ + u8 *buf; /* Log buffer (host copy) */ + uint last; /* Last buffer read index */ +}; + +struct brcmf_trap_info { + __le32 type; + __le32 epc; + __le32 cpsr; + __le32 spsr; + __le32 r0; /* a1 */ + __le32 r1; /* a2 */ + __le32 r2; /* a3 */ + __le32 r3; /* a4 */ + __le32 r4; /* v1 */ + __le32 r5; /* v2 */ + __le32 r6; /* v3 */ + __le32 r7; /* v4 */ + __le32 r8; /* v5 */ + __le32 r9; /* sb/v6 */ + __le32 r10; /* sl/v7 */ + __le32 r11; /* fp/v8 */ + __le32 r12; /* ip */ + __le32 r13; /* sp */ + __le32 r14; /* lr */ + __le32 pc; /* r15 */ +}; +#endif /* DEBUG */ + +struct sdpcm_shared { + u32 flags; + u32 trap_addr; + u32 assert_exp_addr; + u32 assert_file_addr; + u32 assert_line; + u32 console_addr; /* Address of struct rte_console */ + u32 msgtrace_addr; + u8 tag[32]; + u32 brpt_addr; +}; + +struct sdpcm_shared_le { + __le32 flags; + __le32 trap_addr; + __le32 assert_exp_addr; + __le32 assert_file_addr; + __le32 assert_line; + __le32 console_addr; /* Address of struct rte_console */ + __le32 msgtrace_addr; + u8 tag[32]; + __le32 brpt_addr; +}; + +/* dongle SDIO bus specific header info */ +struct brcmf_sdio_hdrinfo { + u8 seq_num; + u8 channel; + u16 len; + u16 len_left; + u16 len_nxtfrm; + u8 dat_offset; + bool lastfrm; + u16 tail_pad; +}; + +/* misc chip info needed by some of the routines */ +/* Private data for SDIO bus interaction */ +struct brcmf_sdio { + struct brcmf_sdio_dev *sdiodev; /* sdio device handler */ + struct brcmf_chip *ci; /* Chip info struct */ + + u32 ramsize; /* Size of RAM in SOCRAM (bytes) */ + + u32 hostintmask; /* Copy of Host Interrupt Mask */ + atomic_t intstatus; /* Intstatus bits (events) pending */ + atomic_t fcstate; /* State of dongle flow-control */ + + uint blocksize; /* Block size of SDIO transfers */ + uint roundup; /* Max roundup limit */ + + struct pktq txq; /* Queue length used for flow-control */ + u8 flowcontrol; /* per prio flow control bitmask */ + u8 tx_seq; /* Transmit sequence number (next) */ + u8 tx_max; /* Maximum transmit sequence allowed */ + + u8 *hdrbuf; /* buffer for handling rx frame */ + u8 *rxhdr; /* Header of current rx frame (in hdrbuf) */ + u8 rx_seq; /* Receive sequence number (expected) */ + struct brcmf_sdio_hdrinfo cur_read; + /* info of current read frame */ + bool rxskip; /* Skip receive (awaiting NAK ACK) */ + bool rxpending; /* Data frame pending in dongle */ + + uint rxbound; /* Rx frames to read before resched */ + uint txbound; /* Tx frames to send before resched */ + uint txminmax; + + struct sk_buff *glomd; /* Packet containing glomming descriptor */ + struct sk_buff_head glom; /* Packet list for glommed superframe */ + uint glomerr; /* Glom packet read errors */ + + u8 *rxbuf; /* Buffer for receiving control packets */ + uint rxblen; /* Allocated length of rxbuf */ + u8 *rxctl; /* Aligned pointer into rxbuf */ + u8 *rxctl_orig; /* pointer for freeing rxctl */ + uint rxlen; /* Length of valid data in buffer */ + spinlock_t rxctl_lock; /* protection lock for ctrl frame resources */ + + u8 sdpcm_ver; /* Bus protocol reported by dongle */ + + bool intr; /* Use interrupts */ + bool poll; /* Use polling */ + atomic_t ipend; /* Device interrupt is pending */ + uint spurious; /* Count of spurious interrupts */ + uint pollrate; /* Ticks between device polls */ + uint polltick; /* Tick counter */ + +#ifdef DEBUG + uint console_interval; + struct brcmf_console console; /* Console output polling support */ + uint console_addr; /* Console address from shared struct */ +#endif /* DEBUG */ + + uint clkstate; /* State of sd and backplane clock(s) */ + bool activity; /* Activity flag for clock down */ + s32 idletime; /* Control for activity timeout */ + s32 idlecount; /* Activity timeout counter */ + s32 idleclock; /* How to set bus driver when idle */ + bool rxflow_mode; /* Rx flow control mode */ + bool rxflow; /* Is rx flow control on */ + bool alp_only; /* Don't use HT clock (ALP only) */ + + u8 *ctrl_frame_buf; + u16 ctrl_frame_len; + bool ctrl_frame_stat; + + spinlock_t txq_lock; /* protect bus->txq */ + struct semaphore tx_seq_lock; /* protect bus->tx_seq */ + wait_queue_head_t ctrl_wait; + wait_queue_head_t dcmd_resp_wait; + + struct timer_list timer; + struct completion watchdog_wait; + struct task_struct *watchdog_tsk; + bool wd_timer_valid; + uint save_ms; + + struct workqueue_struct *brcmf_wq; + struct work_struct datawork; + atomic_t dpc_tskcnt; + + bool txoff; /* Transmit flow-controlled */ + struct brcmf_sdio_count sdcnt; + bool sr_enabled; /* SaveRestore enabled */ + bool sleeping; /* SDIO bus sleeping */ + + u8 tx_hdrlen; /* sdio bus header length for tx packet */ + bool txglom; /* host tx glomming enable flag */ + u16 head_align; /* buffer pointer alignment */ + u16 sgentry_align; /* scatter-gather buffer alignment */ +}; + +/* clkstate */ +#define CLK_NONE 0 +#define CLK_SDONLY 1 +#define CLK_PENDING 2 +#define CLK_AVAIL 3 + +#ifdef DEBUG +static int qcount[NUMPRIO]; +#endif /* DEBUG */ + +#define DEFAULT_SDIO_DRIVE_STRENGTH 6 /* in milliamps */ + +#define RETRYCHAN(chan) ((chan) == SDPCM_EVENT_CHANNEL) + +/* Retry count for register access failures */ +static const uint retry_limit = 2; + +/* Limit on rounding up frames */ +static const uint max_roundup = 512; + +#define ALIGNMENT 4 + +enum brcmf_sdio_frmtype { + BRCMF_SDIO_FT_NORMAL, + BRCMF_SDIO_FT_SUPER, + BRCMF_SDIO_FT_SUB, +}; + +#define SDIOD_DRVSTR_KEY(chip, pmu) (((chip) << 16) | (pmu)) + +/* SDIO Pad drive strength to select value mappings */ +struct sdiod_drive_str { + u8 strength; /* Pad Drive Strength in mA */ + u8 sel; /* Chip-specific select value */ +}; + +/* SDIO Drive Strength to sel value table for PMU Rev 11 (1.8V) */ +static const struct sdiod_drive_str sdiod_drvstr_tab1_1v8[] = { + {32, 0x6}, + {26, 0x7}, + {22, 0x4}, + {16, 0x5}, + {12, 0x2}, + {8, 0x3}, + {4, 0x0}, + {0, 0x1} +}; + +/* SDIO Drive Strength to sel value table for PMU Rev 13 (1.8v) */ +static const struct sdiod_drive_str sdiod_drive_strength_tab5_1v8[] = { + {6, 0x7}, + {5, 0x6}, + {4, 0x5}, + {3, 0x4}, + {2, 0x2}, + {1, 0x1}, + {0, 0x0} +}; + +/* SDIO Drive Strength to sel value table for PMU Rev 17 (1.8v) */ +static const struct sdiod_drive_str sdiod_drvstr_tab6_1v8[] = { + {3, 0x3}, + {2, 0x2}, + {1, 0x1}, + {0, 0x0} }; + +/* SDIO Drive Strength to sel value table for 43143 PMU Rev 17 (3.3V) */ +static const struct sdiod_drive_str sdiod_drvstr_tab2_3v3[] = { + {16, 0x7}, + {12, 0x5}, + {8, 0x3}, + {4, 0x1} +}; + +#define BCM43143_FIRMWARE_NAME "brcm/brcmfmac43143-sdio.bin" +#define BCM43143_NVRAM_NAME "brcm/brcmfmac43143-sdio.txt" +#define BCM43241B0_FIRMWARE_NAME "brcm/brcmfmac43241b0-sdio.bin" +#define BCM43241B0_NVRAM_NAME "brcm/brcmfmac43241b0-sdio.txt" +#define BCM43241B4_FIRMWARE_NAME "brcm/brcmfmac43241b4-sdio.bin" +#define BCM43241B4_NVRAM_NAME "brcm/brcmfmac43241b4-sdio.txt" +#define BCM4329_FIRMWARE_NAME "brcm/brcmfmac4329-sdio.bin" +#define BCM4329_NVRAM_NAME "brcm/brcmfmac4329-sdio.txt" +#define BCM4330_FIRMWARE_NAME "brcm/brcmfmac4330-sdio.bin" +#define BCM4330_NVRAM_NAME "brcm/brcmfmac4330-sdio.txt" +#define BCM4334_FIRMWARE_NAME "brcm/brcmfmac4334-sdio.bin" +#define BCM4334_NVRAM_NAME "brcm/brcmfmac4334-sdio.txt" +#define BCM4335_FIRMWARE_NAME "brcm/brcmfmac4335-sdio.bin" +#define BCM4335_NVRAM_NAME "brcm/brcmfmac4335-sdio.txt" +#define BCM43362_FIRMWARE_NAME "brcm/brcmfmac43362-sdio.bin" +#define BCM43362_NVRAM_NAME "brcm/brcmfmac43362-sdio.txt" +#define BCM4339_FIRMWARE_NAME "brcm/brcmfmac4339-sdio.bin" +#define BCM4339_NVRAM_NAME "brcm/brcmfmac4339-sdio.txt" +#define BCM4354_FIRMWARE_NAME "brcm/brcmfmac4354-sdio.bin" +#define BCM4354_NVRAM_NAME "brcm/brcmfmac4354-sdio.txt" + +MODULE_FIRMWARE(BCM43143_FIRMWARE_NAME); +MODULE_FIRMWARE(BCM43143_NVRAM_NAME); +MODULE_FIRMWARE(BCM43241B0_FIRMWARE_NAME); +MODULE_FIRMWARE(BCM43241B0_NVRAM_NAME); +MODULE_FIRMWARE(BCM43241B4_FIRMWARE_NAME); +MODULE_FIRMWARE(BCM43241B4_NVRAM_NAME); +MODULE_FIRMWARE(BCM4329_FIRMWARE_NAME); +MODULE_FIRMWARE(BCM4329_NVRAM_NAME); +MODULE_FIRMWARE(BCM4330_FIRMWARE_NAME); +MODULE_FIRMWARE(BCM4330_NVRAM_NAME); +MODULE_FIRMWARE(BCM4334_FIRMWARE_NAME); +MODULE_FIRMWARE(BCM4334_NVRAM_NAME); +MODULE_FIRMWARE(BCM4335_FIRMWARE_NAME); +MODULE_FIRMWARE(BCM4335_NVRAM_NAME); +MODULE_FIRMWARE(BCM43362_FIRMWARE_NAME); +MODULE_FIRMWARE(BCM43362_NVRAM_NAME); +MODULE_FIRMWARE(BCM4339_FIRMWARE_NAME); +MODULE_FIRMWARE(BCM4339_NVRAM_NAME); +MODULE_FIRMWARE(BCM4354_FIRMWARE_NAME); +MODULE_FIRMWARE(BCM4354_NVRAM_NAME); + +struct brcmf_firmware_names { + u32 chipid; + u32 revmsk; + const char *bin; + const char *nv; +}; + +enum brcmf_firmware_type { + BRCMF_FIRMWARE_BIN, + BRCMF_FIRMWARE_NVRAM +}; + +#define BRCMF_FIRMWARE_NVRAM(name) \ + name ## _FIRMWARE_NAME, name ## _NVRAM_NAME + +static const struct brcmf_firmware_names brcmf_fwname_data[] = { + { BCM43143_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM43143) }, + { BCM43241_CHIP_ID, 0x0000001F, BRCMF_FIRMWARE_NVRAM(BCM43241B0) }, + { BCM43241_CHIP_ID, 0xFFFFFFE0, BRCMF_FIRMWARE_NVRAM(BCM43241B4) }, + { BCM4329_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4329) }, + { BCM4330_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4330) }, + { BCM4334_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4334) }, + { BCM4335_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4335) }, + { BCM43362_CHIP_ID, 0xFFFFFFFE, BRCMF_FIRMWARE_NVRAM(BCM43362) }, + { BCM4339_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4339) }, + { BCM4354_CHIP_ID, 0xFFFFFFFF, BRCMF_FIRMWARE_NVRAM(BCM4354) } +}; + +static const char *brcmf_sdio_get_fwname(struct brcmf_chip *ci, + enum brcmf_firmware_type type) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(brcmf_fwname_data); i++) { + if (brcmf_fwname_data[i].chipid == ci->chip && + brcmf_fwname_data[i].revmsk & BIT(ci->chiprev)) { + switch (type) { + case BRCMF_FIRMWARE_BIN: + return brcmf_fwname_data[i].bin; + case BRCMF_FIRMWARE_NVRAM: + return brcmf_fwname_data[i].nv; + default: + brcmf_err("invalid firmware type (%d)\n", type); + return NULL; + } + } + } + brcmf_err("Unknown chipid %d [%d]\n", + ci->chip, ci->chiprev); + return NULL; +} + +static void pkt_align(struct sk_buff *p, int len, int align) +{ + uint datalign; + datalign = (unsigned long)(p->data); + datalign = roundup(datalign, (align)) - datalign; + if (datalign) + skb_pull(p, datalign); + __skb_trim(p, len); +} + +/* To check if there's window offered */ +static bool data_ok(struct brcmf_sdio *bus) +{ + return (u8)(bus->tx_max - bus->tx_seq) != 0 && + ((u8)(bus->tx_max - bus->tx_seq) & 0x80) == 0; +} + +/* + * Reads a register in the SDIO hardware block. This block occupies a series of + * adresses on the 32 bit backplane bus. + */ +static int r_sdreg32(struct brcmf_sdio *bus, u32 *regvar, u32 offset) +{ + struct brcmf_core *core; + int ret; + + core = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV); + *regvar = brcmf_sdiod_regrl(bus->sdiodev, core->base + offset, &ret); + + return ret; +} + +static int w_sdreg32(struct brcmf_sdio *bus, u32 regval, u32 reg_offset) +{ + struct brcmf_core *core; + int ret; + + core = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV); + brcmf_sdiod_regwl(bus->sdiodev, core->base + reg_offset, regval, &ret); + + return ret; +} + +static int +brcmf_sdio_kso_control(struct brcmf_sdio *bus, bool on) +{ + u8 wr_val = 0, rd_val, cmp_val, bmask; + int err = 0; + int try_cnt = 0; + + brcmf_dbg(TRACE, "Enter: on=%d\n", on); + + wr_val = (on << SBSDIO_FUNC1_SLEEPCSR_KSO_SHIFT); + /* 1st KSO write goes to AOS wake up core if device is asleep */ + brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, + wr_val, &err); + + if (on) { + /* device WAKEUP through KSO: + * write bit 0 & read back until + * both bits 0 (kso bit) & 1 (dev on status) are set + */ + cmp_val = SBSDIO_FUNC1_SLEEPCSR_KSO_MASK | + SBSDIO_FUNC1_SLEEPCSR_DEVON_MASK; + bmask = cmp_val; + usleep_range(2000, 3000); + } else { + /* Put device to sleep, turn off KSO */ + cmp_val = 0; + /* only check for bit0, bit1(dev on status) may not + * get cleared right away + */ + bmask = SBSDIO_FUNC1_SLEEPCSR_KSO_MASK; + } + + do { + /* reliable KSO bit set/clr: + * the sdiod sleep write access is synced to PMU 32khz clk + * just one write attempt may fail, + * read it back until it matches written value + */ + rd_val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, + &err); + if (((rd_val & bmask) == cmp_val) && !err) + break; + + udelay(KSO_WAIT_US); + brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, + wr_val, &err); + } while (try_cnt++ < MAX_KSO_ATTEMPTS); + + if (try_cnt > 2) + brcmf_dbg(SDIO, "try_cnt=%d rd_val=0x%x err=%d\n", try_cnt, + rd_val, err); + + if (try_cnt > MAX_KSO_ATTEMPTS) + brcmf_err("max tries: rd_val=0x%x err=%d\n", rd_val, err); + + return err; +} + +#define HOSTINTMASK (I_HMB_SW_MASK | I_CHIPACTIVE) + +/* Turn backplane clock on or off */ +static int brcmf_sdio_htclk(struct brcmf_sdio *bus, bool on, bool pendok) +{ + int err; + u8 clkctl, clkreq, devctl; + unsigned long timeout; + + brcmf_dbg(SDIO, "Enter\n"); + + clkctl = 0; + + if (bus->sr_enabled) { + bus->clkstate = (on ? CLK_AVAIL : CLK_SDONLY); + return 0; + } + + if (on) { + /* Request HT Avail */ + clkreq = + bus->alp_only ? SBSDIO_ALP_AVAIL_REQ : SBSDIO_HT_AVAIL_REQ; + + brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, + clkreq, &err); + if (err) { + brcmf_err("HT Avail request error: %d\n", err); + return -EBADE; + } + + /* Check current status */ + clkctl = brcmf_sdiod_regrb(bus->sdiodev, + SBSDIO_FUNC1_CHIPCLKCSR, &err); + if (err) { + brcmf_err("HT Avail read error: %d\n", err); + return -EBADE; + } + + /* Go to pending and await interrupt if appropriate */ + if (!SBSDIO_CLKAV(clkctl, bus->alp_only) && pendok) { + /* Allow only clock-available interrupt */ + devctl = brcmf_sdiod_regrb(bus->sdiodev, + SBSDIO_DEVICE_CTL, &err); + if (err) { + brcmf_err("Devctl error setting CA: %d\n", + err); + return -EBADE; + } + + devctl |= SBSDIO_DEVCTL_CA_INT_ONLY; + brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, + devctl, &err); + brcmf_dbg(SDIO, "CLKCTL: set PENDING\n"); + bus->clkstate = CLK_PENDING; + + return 0; + } else if (bus->clkstate == CLK_PENDING) { + /* Cancel CA-only interrupt filter */ + devctl = brcmf_sdiod_regrb(bus->sdiodev, + SBSDIO_DEVICE_CTL, &err); + devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; + brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, + devctl, &err); + } + + /* Otherwise, wait here (polling) for HT Avail */ + timeout = jiffies + + msecs_to_jiffies(PMU_MAX_TRANSITION_DLY/1000); + while (!SBSDIO_CLKAV(clkctl, bus->alp_only)) { + clkctl = brcmf_sdiod_regrb(bus->sdiodev, + SBSDIO_FUNC1_CHIPCLKCSR, + &err); + if (time_after(jiffies, timeout)) + break; + else + usleep_range(5000, 10000); + } + if (err) { + brcmf_err("HT Avail request error: %d\n", err); + return -EBADE; + } + if (!SBSDIO_CLKAV(clkctl, bus->alp_only)) { + brcmf_err("HT Avail timeout (%d): clkctl 0x%02x\n", + PMU_MAX_TRANSITION_DLY, clkctl); + return -EBADE; + } + + /* Mark clock available */ + bus->clkstate = CLK_AVAIL; + brcmf_dbg(SDIO, "CLKCTL: turned ON\n"); + +#if defined(DEBUG) + if (!bus->alp_only) { + if (SBSDIO_ALPONLY(clkctl)) + brcmf_err("HT Clock should be on\n"); + } +#endif /* defined (DEBUG) */ + + } else { + clkreq = 0; + + if (bus->clkstate == CLK_PENDING) { + /* Cancel CA-only interrupt filter */ + devctl = brcmf_sdiod_regrb(bus->sdiodev, + SBSDIO_DEVICE_CTL, &err); + devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; + brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, + devctl, &err); + } + + bus->clkstate = CLK_SDONLY; + brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, + clkreq, &err); + brcmf_dbg(SDIO, "CLKCTL: turned OFF\n"); + if (err) { + brcmf_err("Failed access turning clock off: %d\n", + err); + return -EBADE; + } + } + return 0; +} + +/* Change idle/active SD state */ +static int brcmf_sdio_sdclk(struct brcmf_sdio *bus, bool on) +{ + brcmf_dbg(SDIO, "Enter\n"); + + if (on) + bus->clkstate = CLK_SDONLY; + else + bus->clkstate = CLK_NONE; + + return 0; +} + +/* Transition SD and backplane clock readiness */ +static int brcmf_sdio_clkctl(struct brcmf_sdio *bus, uint target, bool pendok) +{ +#ifdef DEBUG + uint oldstate = bus->clkstate; +#endif /* DEBUG */ + + brcmf_dbg(SDIO, "Enter\n"); + + /* Early exit if we're already there */ + if (bus->clkstate == target) { + if (target == CLK_AVAIL) { + brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS); + bus->activity = true; + } + return 0; + } + + switch (target) { + case CLK_AVAIL: + /* Make sure SD clock is available */ + if (bus->clkstate == CLK_NONE) + brcmf_sdio_sdclk(bus, true); + /* Now request HT Avail on the backplane */ + brcmf_sdio_htclk(bus, true, pendok); + brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS); + bus->activity = true; + break; + + case CLK_SDONLY: + /* Remove HT request, or bring up SD clock */ + if (bus->clkstate == CLK_NONE) + brcmf_sdio_sdclk(bus, true); + else if (bus->clkstate == CLK_AVAIL) + brcmf_sdio_htclk(bus, false, false); + else + brcmf_err("request for %d -> %d\n", + bus->clkstate, target); + brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS); + break; + + case CLK_NONE: + /* Make sure to remove HT request */ + if (bus->clkstate == CLK_AVAIL) + brcmf_sdio_htclk(bus, false, false); + /* Now remove the SD clock */ + brcmf_sdio_sdclk(bus, false); + brcmf_sdio_wd_timer(bus, 0); + break; + } +#ifdef DEBUG + brcmf_dbg(SDIO, "%d -> %d\n", oldstate, bus->clkstate); +#endif /* DEBUG */ + + return 0; +} + +static int +brcmf_sdio_bus_sleep(struct brcmf_sdio *bus, bool sleep, bool pendok) +{ + int err = 0; + u8 clkcsr; + + brcmf_dbg(SDIO, "Enter: request %s currently %s\n", + (sleep ? "SLEEP" : "WAKE"), + (bus->sleeping ? "SLEEP" : "WAKE")); + + /* If SR is enabled control bus state with KSO */ + if (bus->sr_enabled) { + /* Done if we're already in the requested state */ + if (sleep == bus->sleeping) + goto end; + + /* Going to sleep */ + if (sleep) { + /* Don't sleep if something is pending */ + if (atomic_read(&bus->intstatus) || + atomic_read(&bus->ipend) > 0 || + (!atomic_read(&bus->fcstate) && + brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && + data_ok(bus))) { + err = -EBUSY; + goto done; + } + + clkcsr = brcmf_sdiod_regrb(bus->sdiodev, + SBSDIO_FUNC1_CHIPCLKCSR, + &err); + if ((clkcsr & SBSDIO_CSR_MASK) == 0) { + brcmf_dbg(SDIO, "no clock, set ALP\n"); + brcmf_sdiod_regwb(bus->sdiodev, + SBSDIO_FUNC1_CHIPCLKCSR, + SBSDIO_ALP_AVAIL_REQ, &err); + } + err = brcmf_sdio_kso_control(bus, false); + /* disable watchdog */ + if (!err) + brcmf_sdio_wd_timer(bus, 0); + } else { + bus->idlecount = 0; + err = brcmf_sdio_kso_control(bus, true); + } + if (!err) { + /* Change state */ + bus->sleeping = sleep; + brcmf_dbg(SDIO, "new state %s\n", + (sleep ? "SLEEP" : "WAKE")); + } else { + brcmf_err("error while changing bus sleep state %d\n", + err); + goto done; + } + } + +end: + /* control clocks */ + if (sleep) { + if (!bus->sr_enabled) + brcmf_sdio_clkctl(bus, CLK_NONE, pendok); + } else { + brcmf_sdio_clkctl(bus, CLK_AVAIL, pendok); + } +done: + brcmf_dbg(SDIO, "Exit: err=%d\n", err); + return err; + +} + +#ifdef DEBUG +static inline bool brcmf_sdio_valid_shared_address(u32 addr) +{ + return !(addr == 0 || ((~addr >> 16) & 0xffff) == (addr & 0xffff)); +} + +static int brcmf_sdio_readshared(struct brcmf_sdio *bus, + struct sdpcm_shared *sh) +{ + u32 addr; + int rv; + u32 shaddr = 0; + struct sdpcm_shared_le sh_le; + __le32 addr_le; + + shaddr = bus->ci->rambase + bus->ramsize - 4; + + /* + * Read last word in socram to determine + * address of sdpcm_shared structure + */ + sdio_claim_host(bus->sdiodev->func[1]); + brcmf_sdio_bus_sleep(bus, false, false); + rv = brcmf_sdiod_ramrw(bus->sdiodev, false, shaddr, (u8 *)&addr_le, 4); + sdio_release_host(bus->sdiodev->func[1]); + if (rv < 0) + return rv; + + addr = le32_to_cpu(addr_le); + + brcmf_dbg(SDIO, "sdpcm_shared address 0x%08X\n", addr); + + /* + * Check if addr is valid. + * NVRAM length at the end of memory should have been overwritten. + */ + if (!brcmf_sdio_valid_shared_address(addr)) { + brcmf_err("invalid sdpcm_shared address 0x%08X\n", + addr); + return -EINVAL; + } + + /* Read hndrte_shared structure */ + rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, (u8 *)&sh_le, + sizeof(struct sdpcm_shared_le)); + if (rv < 0) + return rv; + + /* Endianness */ + sh->flags = le32_to_cpu(sh_le.flags); + sh->trap_addr = le32_to_cpu(sh_le.trap_addr); + sh->assert_exp_addr = le32_to_cpu(sh_le.assert_exp_addr); + sh->assert_file_addr = le32_to_cpu(sh_le.assert_file_addr); + sh->assert_line = le32_to_cpu(sh_le.assert_line); + sh->console_addr = le32_to_cpu(sh_le.console_addr); + sh->msgtrace_addr = le32_to_cpu(sh_le.msgtrace_addr); + + if ((sh->flags & SDPCM_SHARED_VERSION_MASK) > SDPCM_SHARED_VERSION) { + brcmf_err("sdpcm shared version unsupported: dhd %d dongle %d\n", + SDPCM_SHARED_VERSION, + sh->flags & SDPCM_SHARED_VERSION_MASK); + return -EPROTO; + } + + return 0; +} + +static void brcmf_sdio_get_console_addr(struct brcmf_sdio *bus) +{ + struct sdpcm_shared sh; + + if (brcmf_sdio_readshared(bus, &sh) == 0) + bus->console_addr = sh.console_addr; +} +#else +static void brcmf_sdio_get_console_addr(struct brcmf_sdio *bus) +{ +} +#endif /* DEBUG */ + +static u32 brcmf_sdio_hostmail(struct brcmf_sdio *bus) +{ + u32 intstatus = 0; + u32 hmb_data; + u8 fcbits; + int ret; + + brcmf_dbg(SDIO, "Enter\n"); + + /* Read mailbox data and ack that we did so */ + ret = r_sdreg32(bus, &hmb_data, + offsetof(struct sdpcmd_regs, tohostmailboxdata)); + + if (ret == 0) + w_sdreg32(bus, SMB_INT_ACK, + offsetof(struct sdpcmd_regs, tosbmailbox)); + bus->sdcnt.f1regdata += 2; + + /* Dongle recomposed rx frames, accept them again */ + if (hmb_data & HMB_DATA_NAKHANDLED) { + brcmf_dbg(SDIO, "Dongle reports NAK handled, expect rtx of %d\n", + bus->rx_seq); + if (!bus->rxskip) + brcmf_err("unexpected NAKHANDLED!\n"); + + bus->rxskip = false; + intstatus |= I_HMB_FRAME_IND; + } + + /* + * DEVREADY does not occur with gSPI. + */ + if (hmb_data & (HMB_DATA_DEVREADY | HMB_DATA_FWREADY)) { + bus->sdpcm_ver = + (hmb_data & HMB_DATA_VERSION_MASK) >> + HMB_DATA_VERSION_SHIFT; + if (bus->sdpcm_ver != SDPCM_PROT_VERSION) + brcmf_err("Version mismatch, dongle reports %d, " + "expecting %d\n", + bus->sdpcm_ver, SDPCM_PROT_VERSION); + else + brcmf_dbg(SDIO, "Dongle ready, protocol version %d\n", + bus->sdpcm_ver); + + /* + * Retrieve console state address now that firmware should have + * updated it. + */ + brcmf_sdio_get_console_addr(bus); + } + + /* + * Flow Control has been moved into the RX headers and this out of band + * method isn't used any more. + * remaining backward compatible with older dongles. + */ + if (hmb_data & HMB_DATA_FC) { + fcbits = (hmb_data & HMB_DATA_FCDATA_MASK) >> + HMB_DATA_FCDATA_SHIFT; + + if (fcbits & ~bus->flowcontrol) + bus->sdcnt.fc_xoff++; + + if (bus->flowcontrol & ~fcbits) + bus->sdcnt.fc_xon++; + + bus->sdcnt.fc_rcvd++; + bus->flowcontrol = fcbits; + } + + /* Shouldn't be any others */ + if (hmb_data & ~(HMB_DATA_DEVREADY | + HMB_DATA_NAKHANDLED | + HMB_DATA_FC | + HMB_DATA_FWREADY | + HMB_DATA_FCDATA_MASK | HMB_DATA_VERSION_MASK)) + brcmf_err("Unknown mailbox data content: 0x%02x\n", + hmb_data); + + return intstatus; +} + +static void brcmf_sdio_rxfail(struct brcmf_sdio *bus, bool abort, bool rtx) +{ + uint retries = 0; + u16 lastrbc; + u8 hi, lo; + int err; + + brcmf_err("%sterminate frame%s\n", + abort ? "abort command, " : "", + rtx ? ", send NAK" : ""); + + if (abort) + brcmf_sdiod_abort(bus->sdiodev, SDIO_FUNC_2); + + brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_FRAMECTRL, + SFC_RF_TERM, &err); + bus->sdcnt.f1regdata++; + + /* Wait until the packet has been flushed (device/FIFO stable) */ + for (lastrbc = retries = 0xffff; retries > 0; retries--) { + hi = brcmf_sdiod_regrb(bus->sdiodev, + SBSDIO_FUNC1_RFRAMEBCHI, &err); + lo = brcmf_sdiod_regrb(bus->sdiodev, + SBSDIO_FUNC1_RFRAMEBCLO, &err); + bus->sdcnt.f1regdata += 2; + + if ((hi == 0) && (lo == 0)) + break; + + if ((hi > (lastrbc >> 8)) && (lo > (lastrbc & 0x00ff))) { + brcmf_err("count growing: last 0x%04x now 0x%04x\n", + lastrbc, (hi << 8) + lo); + } + lastrbc = (hi << 8) + lo; + } + + if (!retries) + brcmf_err("count never zeroed: last 0x%04x\n", lastrbc); + else + brcmf_dbg(SDIO, "flush took %d iterations\n", 0xffff - retries); + + if (rtx) { + bus->sdcnt.rxrtx++; + err = w_sdreg32(bus, SMB_NAK, + offsetof(struct sdpcmd_regs, tosbmailbox)); + + bus->sdcnt.f1regdata++; + if (err == 0) + bus->rxskip = true; + } + + /* Clear partial in any case */ + bus->cur_read.len = 0; +} + +static void brcmf_sdio_txfail(struct brcmf_sdio *bus) +{ + struct brcmf_sdio_dev *sdiodev = bus->sdiodev; + u8 i, hi, lo; + + /* On failure, abort the command and terminate the frame */ + brcmf_err("sdio error, abort command and terminate frame\n"); + bus->sdcnt.tx_sderrs++; + + brcmf_sdiod_abort(sdiodev, SDIO_FUNC_2); + brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_FRAMECTRL, SFC_WF_TERM, NULL); + bus->sdcnt.f1regdata++; + + for (i = 0; i < 3; i++) { + hi = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_WFRAMEBCHI, NULL); + lo = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_WFRAMEBCLO, NULL); + bus->sdcnt.f1regdata += 2; + if ((hi == 0) && (lo == 0)) + break; + } +} + +/* return total length of buffer chain */ +static uint brcmf_sdio_glom_len(struct brcmf_sdio *bus) +{ + struct sk_buff *p; + uint total; + + total = 0; + skb_queue_walk(&bus->glom, p) + total += p->len; + return total; +} + +static void brcmf_sdio_free_glom(struct brcmf_sdio *bus) +{ + struct sk_buff *cur, *next; + + skb_queue_walk_safe(&bus->glom, cur, next) { + skb_unlink(cur, &bus->glom); + brcmu_pkt_buf_free_skb(cur); + } +} + +/** + * brcmfmac sdio bus specific header + * This is the lowest layer header wrapped on the packets transmitted between + * host and WiFi dongle which contains information needed for SDIO core and + * firmware + * + * It consists of 3 parts: hardware header, hardware extension header and + * software header + * hardware header (frame tag) - 4 bytes + * Byte 0~1: Frame length + * Byte 2~3: Checksum, bit-wise inverse of frame length + * hardware extension header - 8 bytes + * Tx glom mode only, N/A for Rx or normal Tx + * Byte 0~1: Packet length excluding hw frame tag + * Byte 2: Reserved + * Byte 3: Frame flags, bit 0: last frame indication + * Byte 4~5: Reserved + * Byte 6~7: Tail padding length + * software header - 8 bytes + * Byte 0: Rx/Tx sequence number + * Byte 1: 4 MSB Channel number, 4 LSB arbitrary flag + * Byte 2: Length of next data frame, reserved for Tx + * Byte 3: Data offset + * Byte 4: Flow control bits, reserved for Tx + * Byte 5: Maximum Sequence number allowed by firmware for Tx, N/A for Tx packet + * Byte 6~7: Reserved + */ +#define SDPCM_HWHDR_LEN 4 +#define SDPCM_HWEXT_LEN 8 +#define SDPCM_SWHDR_LEN 8 +#define SDPCM_HDRLEN (SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN) +/* software header */ +#define SDPCM_SEQ_MASK 0x000000ff +#define SDPCM_SEQ_WRAP 256 +#define SDPCM_CHANNEL_MASK 0x00000f00 +#define SDPCM_CHANNEL_SHIFT 8 +#define SDPCM_CONTROL_CHANNEL 0 /* Control */ +#define SDPCM_EVENT_CHANNEL 1 /* Asyc Event Indication */ +#define SDPCM_DATA_CHANNEL 2 /* Data Xmit/Recv */ +#define SDPCM_GLOM_CHANNEL 3 /* Coalesced packets */ +#define SDPCM_TEST_CHANNEL 15 /* Test/debug packets */ +#define SDPCM_GLOMDESC(p) (((u8 *)p)[1] & 0x80) +#define SDPCM_NEXTLEN_MASK 0x00ff0000 +#define SDPCM_NEXTLEN_SHIFT 16 +#define SDPCM_DOFFSET_MASK 0xff000000 +#define SDPCM_DOFFSET_SHIFT 24 +#define SDPCM_FCMASK_MASK 0x000000ff +#define SDPCM_WINDOW_MASK 0x0000ff00 +#define SDPCM_WINDOW_SHIFT 8 + +static inline u8 brcmf_sdio_getdatoffset(u8 *swheader) +{ + u32 hdrvalue; + hdrvalue = *(u32 *)swheader; + return (u8)((hdrvalue & SDPCM_DOFFSET_MASK) >> SDPCM_DOFFSET_SHIFT); +} + +static int brcmf_sdio_hdparse(struct brcmf_sdio *bus, u8 *header, + struct brcmf_sdio_hdrinfo *rd, + enum brcmf_sdio_frmtype type) +{ + u16 len, checksum; + u8 rx_seq, fc, tx_seq_max; + u32 swheader; + + trace_brcmf_sdpcm_hdr(SDPCM_RX, header); + + /* hw header */ + len = get_unaligned_le16(header); + checksum = get_unaligned_le16(header + sizeof(u16)); + /* All zero means no more to read */ + if (!(len | checksum)) { + bus->rxpending = false; + return -ENODATA; + } + if ((u16)(~(len ^ checksum))) { + brcmf_err("HW header checksum error\n"); + bus->sdcnt.rx_badhdr++; + brcmf_sdio_rxfail(bus, false, false); + return -EIO; + } + if (len < SDPCM_HDRLEN) { + brcmf_err("HW header length error\n"); + return -EPROTO; + } + if (type == BRCMF_SDIO_FT_SUPER && + (roundup(len, bus->blocksize) != rd->len)) { + brcmf_err("HW superframe header length error\n"); + return -EPROTO; + } + if (type == BRCMF_SDIO_FT_SUB && len > rd->len) { + brcmf_err("HW subframe header length error\n"); + return -EPROTO; + } + rd->len = len; + + /* software header */ + header += SDPCM_HWHDR_LEN; + swheader = le32_to_cpu(*(__le32 *)header); + if (type == BRCMF_SDIO_FT_SUPER && SDPCM_GLOMDESC(header)) { + brcmf_err("Glom descriptor found in superframe head\n"); + rd->len = 0; + return -EINVAL; + } + rx_seq = (u8)(swheader & SDPCM_SEQ_MASK); + rd->channel = (swheader & SDPCM_CHANNEL_MASK) >> SDPCM_CHANNEL_SHIFT; + if (len > MAX_RX_DATASZ && rd->channel != SDPCM_CONTROL_CHANNEL && + type != BRCMF_SDIO_FT_SUPER) { + brcmf_err("HW header length too long\n"); + bus->sdcnt.rx_toolong++; + brcmf_sdio_rxfail(bus, false, false); + rd->len = 0; + return -EPROTO; + } + if (type == BRCMF_SDIO_FT_SUPER && rd->channel != SDPCM_GLOM_CHANNEL) { + brcmf_err("Wrong channel for superframe\n"); + rd->len = 0; + return -EINVAL; + } + if (type == BRCMF_SDIO_FT_SUB && rd->channel != SDPCM_DATA_CHANNEL && + rd->channel != SDPCM_EVENT_CHANNEL) { + brcmf_err("Wrong channel for subframe\n"); + rd->len = 0; + return -EINVAL; + } + rd->dat_offset = brcmf_sdio_getdatoffset(header); + if (rd->dat_offset < SDPCM_HDRLEN || rd->dat_offset > rd->len) { + brcmf_err("seq %d: bad data offset\n", rx_seq); + bus->sdcnt.rx_badhdr++; + brcmf_sdio_rxfail(bus, false, false); + rd->len = 0; + return -ENXIO; + } + if (rd->seq_num != rx_seq) { + brcmf_err("seq %d: sequence number error, expect %d\n", + rx_seq, rd->seq_num); + bus->sdcnt.rx_badseq++; + rd->seq_num = rx_seq; + } + /* no need to check the reset for subframe */ + if (type == BRCMF_SDIO_FT_SUB) + return 0; + rd->len_nxtfrm = (swheader & SDPCM_NEXTLEN_MASK) >> SDPCM_NEXTLEN_SHIFT; + if (rd->len_nxtfrm << 4 > MAX_RX_DATASZ) { + /* only warm for NON glom packet */ + if (rd->channel != SDPCM_GLOM_CHANNEL) + brcmf_err("seq %d: next length error\n", rx_seq); + rd->len_nxtfrm = 0; + } + swheader = le32_to_cpu(*(__le32 *)(header + 4)); + fc = swheader & SDPCM_FCMASK_MASK; + if (bus->flowcontrol != fc) { + if (~bus->flowcontrol & fc) + bus->sdcnt.fc_xoff++; + if (bus->flowcontrol & ~fc) + bus->sdcnt.fc_xon++; + bus->sdcnt.fc_rcvd++; + bus->flowcontrol = fc; + } + tx_seq_max = (swheader & SDPCM_WINDOW_MASK) >> SDPCM_WINDOW_SHIFT; + if ((u8)(tx_seq_max - bus->tx_seq) > 0x40) { + brcmf_err("seq %d: max tx seq number error\n", rx_seq); + tx_seq_max = bus->tx_seq + 2; + } + bus->tx_max = tx_seq_max; + + return 0; +} + +static inline void brcmf_sdio_update_hwhdr(u8 *header, u16 frm_length) +{ + *(__le16 *)header = cpu_to_le16(frm_length); + *(((__le16 *)header) + 1) = cpu_to_le16(~frm_length); +} + +static void brcmf_sdio_hdpack(struct brcmf_sdio *bus, u8 *header, + struct brcmf_sdio_hdrinfo *hd_info) +{ + u32 hdrval; + u8 hdr_offset; + + brcmf_sdio_update_hwhdr(header, hd_info->len); + hdr_offset = SDPCM_HWHDR_LEN; + + if (bus->txglom) { + hdrval = (hd_info->len - hdr_offset) | (hd_info->lastfrm << 24); + *((__le32 *)(header + hdr_offset)) = cpu_to_le32(hdrval); + hdrval = (u16)hd_info->tail_pad << 16; + *(((__le32 *)(header + hdr_offset)) + 1) = cpu_to_le32(hdrval); + hdr_offset += SDPCM_HWEXT_LEN; + } + + hdrval = hd_info->seq_num; + hdrval |= (hd_info->channel << SDPCM_CHANNEL_SHIFT) & + SDPCM_CHANNEL_MASK; + hdrval |= (hd_info->dat_offset << SDPCM_DOFFSET_SHIFT) & + SDPCM_DOFFSET_MASK; + *((__le32 *)(header + hdr_offset)) = cpu_to_le32(hdrval); + *(((__le32 *)(header + hdr_offset)) + 1) = 0; + trace_brcmf_sdpcm_hdr(SDPCM_TX + !!(bus->txglom), header); +} + +static u8 brcmf_sdio_rxglom(struct brcmf_sdio *bus, u8 rxseq) +{ + u16 dlen, totlen; + u8 *dptr, num = 0; + u16 sublen; + struct sk_buff *pfirst, *pnext; + + int errcode; + u8 doff, sfdoff; + + struct brcmf_sdio_hdrinfo rd_new; + + /* If packets, issue read(s) and send up packet chain */ + /* Return sequence numbers consumed? */ + + brcmf_dbg(SDIO, "start: glomd %p glom %p\n", + bus->glomd, skb_peek(&bus->glom)); + + /* If there's a descriptor, generate the packet chain */ + if (bus->glomd) { + pfirst = pnext = NULL; + dlen = (u16) (bus->glomd->len); + dptr = bus->glomd->data; + if (!dlen || (dlen & 1)) { + brcmf_err("bad glomd len(%d), ignore descriptor\n", + dlen); + dlen = 0; + } + + for (totlen = num = 0; dlen; num++) { + /* Get (and move past) next length */ + sublen = get_unaligned_le16(dptr); + dlen -= sizeof(u16); + dptr += sizeof(u16); + if ((sublen < SDPCM_HDRLEN) || + ((num == 0) && (sublen < (2 * SDPCM_HDRLEN)))) { + brcmf_err("descriptor len %d bad: %d\n", + num, sublen); + pnext = NULL; + break; + } + if (sublen % bus->sgentry_align) { + brcmf_err("sublen %d not multiple of %d\n", + sublen, bus->sgentry_align); + } + totlen += sublen; + + /* For last frame, adjust read len so total + is a block multiple */ + if (!dlen) { + sublen += + (roundup(totlen, bus->blocksize) - totlen); + totlen = roundup(totlen, bus->blocksize); + } + + /* Allocate/chain packet for next subframe */ + pnext = brcmu_pkt_buf_get_skb(sublen + bus->sgentry_align); + if (pnext == NULL) { + brcmf_err("bcm_pkt_buf_get_skb failed, num %d len %d\n", + num, sublen); + break; + } + skb_queue_tail(&bus->glom, pnext); + + /* Adhere to start alignment requirements */ + pkt_align(pnext, sublen, bus->sgentry_align); + } + + /* If all allocations succeeded, save packet chain + in bus structure */ + if (pnext) { + brcmf_dbg(GLOM, "allocated %d-byte packet chain for %d subframes\n", + totlen, num); + if (BRCMF_GLOM_ON() && bus->cur_read.len && + totlen != bus->cur_read.len) { + brcmf_dbg(GLOM, "glomdesc mismatch: nextlen %d glomdesc %d rxseq %d\n", + bus->cur_read.len, totlen, rxseq); + } + pfirst = pnext = NULL; + } else { + brcmf_sdio_free_glom(bus); + num = 0; + } + + /* Done with descriptor packet */ + brcmu_pkt_buf_free_skb(bus->glomd); + bus->glomd = NULL; + bus->cur_read.len = 0; + } + + /* Ok -- either we just generated a packet chain, + or had one from before */ + if (!skb_queue_empty(&bus->glom)) { + if (BRCMF_GLOM_ON()) { + brcmf_dbg(GLOM, "try superframe read, packet chain:\n"); + skb_queue_walk(&bus->glom, pnext) { + brcmf_dbg(GLOM, " %p: %p len 0x%04x (%d)\n", + pnext, (u8 *) (pnext->data), + pnext->len, pnext->len); + } + } + + pfirst = skb_peek(&bus->glom); + dlen = (u16) brcmf_sdio_glom_len(bus); + + /* Do an SDIO read for the superframe. Configurable iovar to + * read directly into the chained packet, or allocate a large + * packet and and copy into the chain. + */ + sdio_claim_host(bus->sdiodev->func[1]); + errcode = brcmf_sdiod_recv_chain(bus->sdiodev, + &bus->glom, dlen); + sdio_release_host(bus->sdiodev->func[1]); + bus->sdcnt.f2rxdata++; + + /* On failure, kill the superframe, allow a couple retries */ + if (errcode < 0) { + brcmf_err("glom read of %d bytes failed: %d\n", + dlen, errcode); + + sdio_claim_host(bus->sdiodev->func[1]); + if (bus->glomerr++ < 3) { + brcmf_sdio_rxfail(bus, true, true); + } else { + bus->glomerr = 0; + brcmf_sdio_rxfail(bus, true, false); + bus->sdcnt.rxglomfail++; + brcmf_sdio_free_glom(bus); + } + sdio_release_host(bus->sdiodev->func[1]); + return 0; + } + + brcmf_dbg_hex_dump(BRCMF_GLOM_ON(), + pfirst->data, min_t(int, pfirst->len, 48), + "SUPERFRAME:\n"); + + rd_new.seq_num = rxseq; + rd_new.len = dlen; + sdio_claim_host(bus->sdiodev->func[1]); + errcode = brcmf_sdio_hdparse(bus, pfirst->data, &rd_new, + BRCMF_SDIO_FT_SUPER); + sdio_release_host(bus->sdiodev->func[1]); + bus->cur_read.len = rd_new.len_nxtfrm << 4; + + /* Remove superframe header, remember offset */ + skb_pull(pfirst, rd_new.dat_offset); + sfdoff = rd_new.dat_offset; + num = 0; + + /* Validate all the subframe headers */ + skb_queue_walk(&bus->glom, pnext) { + /* leave when invalid subframe is found */ + if (errcode) + break; + + rd_new.len = pnext->len; + rd_new.seq_num = rxseq++; + sdio_claim_host(bus->sdiodev->func[1]); + errcode = brcmf_sdio_hdparse(bus, pnext->data, &rd_new, + BRCMF_SDIO_FT_SUB); + sdio_release_host(bus->sdiodev->func[1]); + brcmf_dbg_hex_dump(BRCMF_GLOM_ON(), + pnext->data, 32, "subframe:\n"); + + num++; + } + + if (errcode) { + /* Terminate frame on error, request + a couple retries */ + sdio_claim_host(bus->sdiodev->func[1]); + if (bus->glomerr++ < 3) { + /* Restore superframe header space */ + skb_push(pfirst, sfdoff); + brcmf_sdio_rxfail(bus, true, true); + } else { + bus->glomerr = 0; + brcmf_sdio_rxfail(bus, true, false); + bus->sdcnt.rxglomfail++; + brcmf_sdio_free_glom(bus); + } + sdio_release_host(bus->sdiodev->func[1]); + bus->cur_read.len = 0; + return 0; + } + + /* Basic SD framing looks ok - process each packet (header) */ + + skb_queue_walk_safe(&bus->glom, pfirst, pnext) { + dptr = (u8 *) (pfirst->data); + sublen = get_unaligned_le16(dptr); + doff = brcmf_sdio_getdatoffset(&dptr[SDPCM_HWHDR_LEN]); + + brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_DATA_ON(), + dptr, pfirst->len, + "Rx Subframe Data:\n"); + + __skb_trim(pfirst, sublen); + skb_pull(pfirst, doff); + + if (pfirst->len == 0) { + skb_unlink(pfirst, &bus->glom); + brcmu_pkt_buf_free_skb(pfirst); + continue; + } + + brcmf_dbg_hex_dump(BRCMF_GLOM_ON(), + pfirst->data, + min_t(int, pfirst->len, 32), + "subframe %d to stack, %p (%p/%d) nxt/lnk %p/%p\n", + bus->glom.qlen, pfirst, pfirst->data, + pfirst->len, pfirst->next, + pfirst->prev); + skb_unlink(pfirst, &bus->glom); + brcmf_rx_frame(bus->sdiodev->dev, pfirst); + bus->sdcnt.rxglompkts++; + } + + bus->sdcnt.rxglomframes++; + } + return num; +} + +static int brcmf_sdio_dcmd_resp_wait(struct brcmf_sdio *bus, uint *condition, + bool *pending) +{ + DECLARE_WAITQUEUE(wait, current); + int timeout = msecs_to_jiffies(DCMD_RESP_TIMEOUT); + + /* Wait until control frame is available */ + add_wait_queue(&bus->dcmd_resp_wait, &wait); + set_current_state(TASK_INTERRUPTIBLE); + + while (!(*condition) && (!signal_pending(current) && timeout)) + timeout = schedule_timeout(timeout); + + if (signal_pending(current)) + *pending = true; + + set_current_state(TASK_RUNNING); + remove_wait_queue(&bus->dcmd_resp_wait, &wait); + + return timeout; +} + +static int brcmf_sdio_dcmd_resp_wake(struct brcmf_sdio *bus) +{ + if (waitqueue_active(&bus->dcmd_resp_wait)) + wake_up_interruptible(&bus->dcmd_resp_wait); + + return 0; +} +static void +brcmf_sdio_read_control(struct brcmf_sdio *bus, u8 *hdr, uint len, uint doff) +{ + uint rdlen, pad; + u8 *buf = NULL, *rbuf; + int sdret; + + brcmf_dbg(TRACE, "Enter\n"); + + if (bus->rxblen) + buf = vzalloc(bus->rxblen); + if (!buf) + goto done; + + rbuf = bus->rxbuf; + pad = ((unsigned long)rbuf % bus->head_align); + if (pad) + rbuf += (bus->head_align - pad); + + /* Copy the already-read portion over */ + memcpy(buf, hdr, BRCMF_FIRSTREAD); + if (len <= BRCMF_FIRSTREAD) + goto gotpkt; + + /* Raise rdlen to next SDIO block to avoid tail command */ + rdlen = len - BRCMF_FIRSTREAD; + if (bus->roundup && bus->blocksize && (rdlen > bus->blocksize)) { + pad = bus->blocksize - (rdlen % bus->blocksize); + if ((pad <= bus->roundup) && (pad < bus->blocksize) && + ((len + pad) < bus->sdiodev->bus_if->maxctl)) + rdlen += pad; + } else if (rdlen % bus->head_align) { + rdlen += bus->head_align - (rdlen % bus->head_align); + } + + /* Drop if the read is too big or it exceeds our maximum */ + if ((rdlen + BRCMF_FIRSTREAD) > bus->sdiodev->bus_if->maxctl) { + brcmf_err("%d-byte control read exceeds %d-byte buffer\n", + rdlen, bus->sdiodev->bus_if->maxctl); + brcmf_sdio_rxfail(bus, false, false); + goto done; + } + + if ((len - doff) > bus->sdiodev->bus_if->maxctl) { + brcmf_err("%d-byte ctl frame (%d-byte ctl data) exceeds %d-byte limit\n", + len, len - doff, bus->sdiodev->bus_if->maxctl); + bus->sdcnt.rx_toolong++; + brcmf_sdio_rxfail(bus, false, false); + goto done; + } + + /* Read remain of frame body */ + sdret = brcmf_sdiod_recv_buf(bus->sdiodev, rbuf, rdlen); + bus->sdcnt.f2rxdata++; + + /* Control frame failures need retransmission */ + if (sdret < 0) { + brcmf_err("read %d control bytes failed: %d\n", + rdlen, sdret); + bus->sdcnt.rxc_errors++; + brcmf_sdio_rxfail(bus, true, true); + goto done; + } else + memcpy(buf + BRCMF_FIRSTREAD, rbuf, rdlen); + +gotpkt: + + brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_CTL_ON(), + buf, len, "RxCtrl:\n"); + + /* Point to valid data and indicate its length */ + spin_lock_bh(&bus->rxctl_lock); + if (bus->rxctl) { + brcmf_err("last control frame is being processed.\n"); + spin_unlock_bh(&bus->rxctl_lock); + vfree(buf); + goto done; + } + bus->rxctl = buf + doff; + bus->rxctl_orig = buf; + bus->rxlen = len - doff; + spin_unlock_bh(&bus->rxctl_lock); + +done: + /* Awake any waiters */ + brcmf_sdio_dcmd_resp_wake(bus); +} + +/* Pad read to blocksize for efficiency */ +static void brcmf_sdio_pad(struct brcmf_sdio *bus, u16 *pad, u16 *rdlen) +{ + if (bus->roundup && bus->blocksize && *rdlen > bus->blocksize) { + *pad = bus->blocksize - (*rdlen % bus->blocksize); + if (*pad <= bus->roundup && *pad < bus->blocksize && + *rdlen + *pad + BRCMF_FIRSTREAD < MAX_RX_DATASZ) + *rdlen += *pad; + } else if (*rdlen % bus->head_align) { + *rdlen += bus->head_align - (*rdlen % bus->head_align); + } +} + +static uint brcmf_sdio_readframes(struct brcmf_sdio *bus, uint maxframes) +{ + struct sk_buff *pkt; /* Packet for event or data frames */ + u16 pad; /* Number of pad bytes to read */ + uint rxleft = 0; /* Remaining number of frames allowed */ + int ret; /* Return code from calls */ + uint rxcount = 0; /* Total frames read */ + struct brcmf_sdio_hdrinfo *rd = &bus->cur_read, rd_new; + u8 head_read = 0; + + brcmf_dbg(TRACE, "Enter\n"); + + /* Not finished unless we encounter no more frames indication */ + bus->rxpending = true; + + for (rd->seq_num = bus->rx_seq, rxleft = maxframes; + !bus->rxskip && rxleft && brcmf_bus_ready(bus->sdiodev->bus_if); + rd->seq_num++, rxleft--) { + + /* Handle glomming separately */ + if (bus->glomd || !skb_queue_empty(&bus->glom)) { + u8 cnt; + brcmf_dbg(GLOM, "calling rxglom: glomd %p, glom %p\n", + bus->glomd, skb_peek(&bus->glom)); + cnt = brcmf_sdio_rxglom(bus, rd->seq_num); + brcmf_dbg(GLOM, "rxglom returned %d\n", cnt); + rd->seq_num += cnt - 1; + rxleft = (rxleft > cnt) ? (rxleft - cnt) : 1; + continue; + } + + rd->len_left = rd->len; + /* read header first for unknow frame length */ + sdio_claim_host(bus->sdiodev->func[1]); + if (!rd->len) { + ret = brcmf_sdiod_recv_buf(bus->sdiodev, + bus->rxhdr, BRCMF_FIRSTREAD); + bus->sdcnt.f2rxhdrs++; + if (ret < 0) { + brcmf_err("RXHEADER FAILED: %d\n", + ret); + bus->sdcnt.rx_hdrfail++; + brcmf_sdio_rxfail(bus, true, true); + sdio_release_host(bus->sdiodev->func[1]); + continue; + } + + brcmf_dbg_hex_dump(BRCMF_BYTES_ON() || BRCMF_HDRS_ON(), + bus->rxhdr, SDPCM_HDRLEN, + "RxHdr:\n"); + + if (brcmf_sdio_hdparse(bus, bus->rxhdr, rd, + BRCMF_SDIO_FT_NORMAL)) { + sdio_release_host(bus->sdiodev->func[1]); + if (!bus->rxpending) + break; + else + continue; + } + + if (rd->channel == SDPCM_CONTROL_CHANNEL) { + brcmf_sdio_read_control(bus, bus->rxhdr, + rd->len, + rd->dat_offset); + /* prepare the descriptor for the next read */ + rd->len = rd->len_nxtfrm << 4; + rd->len_nxtfrm = 0; + /* treat all packet as event if we don't know */ + rd->channel = SDPCM_EVENT_CHANNEL; + sdio_release_host(bus->sdiodev->func[1]); + continue; + } + rd->len_left = rd->len > BRCMF_FIRSTREAD ? + rd->len - BRCMF_FIRSTREAD : 0; + head_read = BRCMF_FIRSTREAD; + } + + brcmf_sdio_pad(bus, &pad, &rd->len_left); + + pkt = brcmu_pkt_buf_get_skb(rd->len_left + head_read + + bus->head_align); + if (!pkt) { + /* Give up on data, request rtx of events */ + brcmf_err("brcmu_pkt_buf_get_skb failed\n"); + brcmf_sdio_rxfail(bus, false, + RETRYCHAN(rd->channel)); + sdio_release_host(bus->sdiodev->func[1]); + continue; + } + skb_pull(pkt, head_read); + pkt_align(pkt, rd->len_left, bus->head_align); + + ret = brcmf_sdiod_recv_pkt(bus->sdiodev, pkt); + bus->sdcnt.f2rxdata++; + sdio_release_host(bus->sdiodev->func[1]); + + if (ret < 0) { + brcmf_err("read %d bytes from channel %d failed: %d\n", + rd->len, rd->channel, ret); + brcmu_pkt_buf_free_skb(pkt); + sdio_claim_host(bus->sdiodev->func[1]); + brcmf_sdio_rxfail(bus, true, + RETRYCHAN(rd->channel)); + sdio_release_host(bus->sdiodev->func[1]); + continue; + } + + if (head_read) { + skb_push(pkt, head_read); + memcpy(pkt->data, bus->rxhdr, head_read); + head_read = 0; + } else { + memcpy(bus->rxhdr, pkt->data, SDPCM_HDRLEN); + rd_new.seq_num = rd->seq_num; + sdio_claim_host(bus->sdiodev->func[1]); + if (brcmf_sdio_hdparse(bus, bus->rxhdr, &rd_new, + BRCMF_SDIO_FT_NORMAL)) { + rd->len = 0; + brcmu_pkt_buf_free_skb(pkt); + } + bus->sdcnt.rx_readahead_cnt++; + if (rd->len != roundup(rd_new.len, 16)) { + brcmf_err("frame length mismatch:read %d, should be %d\n", + rd->len, + roundup(rd_new.len, 16) >> 4); + rd->len = 0; + brcmf_sdio_rxfail(bus, true, true); + sdio_release_host(bus->sdiodev->func[1]); + brcmu_pkt_buf_free_skb(pkt); + continue; + } + sdio_release_host(bus->sdiodev->func[1]); + rd->len_nxtfrm = rd_new.len_nxtfrm; + rd->channel = rd_new.channel; + rd->dat_offset = rd_new.dat_offset; + + brcmf_dbg_hex_dump(!(BRCMF_BYTES_ON() && + BRCMF_DATA_ON()) && + BRCMF_HDRS_ON(), + bus->rxhdr, SDPCM_HDRLEN, + "RxHdr:\n"); + + if (rd_new.channel == SDPCM_CONTROL_CHANNEL) { + brcmf_err("readahead on control packet %d?\n", + rd_new.seq_num); + /* Force retry w/normal header read */ + rd->len = 0; + sdio_claim_host(bus->sdiodev->func[1]); + brcmf_sdio_rxfail(bus, false, true); + sdio_release_host(bus->sdiodev->func[1]); + brcmu_pkt_buf_free_skb(pkt); + continue; + } + } + + brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_DATA_ON(), + pkt->data, rd->len, "Rx Data:\n"); + + /* Save superframe descriptor and allocate packet frame */ + if (rd->channel == SDPCM_GLOM_CHANNEL) { + if (SDPCM_GLOMDESC(&bus->rxhdr[SDPCM_HWHDR_LEN])) { + brcmf_dbg(GLOM, "glom descriptor, %d bytes:\n", + rd->len); + brcmf_dbg_hex_dump(BRCMF_GLOM_ON(), + pkt->data, rd->len, + "Glom Data:\n"); + __skb_trim(pkt, rd->len); + skb_pull(pkt, SDPCM_HDRLEN); + bus->glomd = pkt; + } else { + brcmf_err("%s: glom superframe w/o " + "descriptor!\n", __func__); + sdio_claim_host(bus->sdiodev->func[1]); + brcmf_sdio_rxfail(bus, false, false); + sdio_release_host(bus->sdiodev->func[1]); + } + /* prepare the descriptor for the next read */ + rd->len = rd->len_nxtfrm << 4; + rd->len_nxtfrm = 0; + /* treat all packet as event if we don't know */ + rd->channel = SDPCM_EVENT_CHANNEL; + continue; + } + + /* Fill in packet len and prio, deliver upward */ + __skb_trim(pkt, rd->len); + skb_pull(pkt, rd->dat_offset); + + /* prepare the descriptor for the next read */ + rd->len = rd->len_nxtfrm << 4; + rd->len_nxtfrm = 0; + /* treat all packet as event if we don't know */ + rd->channel = SDPCM_EVENT_CHANNEL; + + if (pkt->len == 0) { + brcmu_pkt_buf_free_skb(pkt); + continue; + } + + brcmf_rx_frame(bus->sdiodev->dev, pkt); + } + + rxcount = maxframes - rxleft; + /* Message if we hit the limit */ + if (!rxleft) + brcmf_dbg(DATA, "hit rx limit of %d frames\n", maxframes); + else + brcmf_dbg(DATA, "processed %d frames\n", rxcount); + /* Back off rxseq if awaiting rtx, update rx_seq */ + if (bus->rxskip) + rd->seq_num--; + bus->rx_seq = rd->seq_num; + + return rxcount; +} + +static void +brcmf_sdio_wait_event_wakeup(struct brcmf_sdio *bus) +{ + if (waitqueue_active(&bus->ctrl_wait)) + wake_up_interruptible(&bus->ctrl_wait); + return; +} + +static int brcmf_sdio_txpkt_hdalign(struct brcmf_sdio *bus, struct sk_buff *pkt) +{ + u16 head_pad; + u8 *dat_buf; + + dat_buf = (u8 *)(pkt->data); + + /* Check head padding */ + head_pad = ((unsigned long)dat_buf % bus->head_align); + if (head_pad) { + if (skb_headroom(pkt) < head_pad) { + bus->sdiodev->bus_if->tx_realloc++; + head_pad = 0; + if (skb_cow(pkt, head_pad)) + return -ENOMEM; + } + skb_push(pkt, head_pad); + dat_buf = (u8 *)(pkt->data); + memset(dat_buf, 0, head_pad + bus->tx_hdrlen); + } + return head_pad; +} + +/** + * struct brcmf_skbuff_cb reserves first two bytes in sk_buff::cb for + * bus layer usage. + */ +/* flag marking a dummy skb added for DMA alignment requirement */ +#define ALIGN_SKB_FLAG 0x8000 +/* bit mask of data length chopped from the previous packet */ +#define ALIGN_SKB_CHOP_LEN_MASK 0x7fff + +static int brcmf_sdio_txpkt_prep_sg(struct brcmf_sdio *bus, + struct sk_buff_head *pktq, + struct sk_buff *pkt, u16 total_len) +{ + struct brcmf_sdio_dev *sdiodev; + struct sk_buff *pkt_pad; + u16 tail_pad, tail_chop, chain_pad; + unsigned int blksize; + bool lastfrm; + int ntail, ret; + + sdiodev = bus->sdiodev; + blksize = sdiodev->func[SDIO_FUNC_2]->cur_blksize; + /* sg entry alignment should be a divisor of block size */ + WARN_ON(blksize % bus->sgentry_align); + + /* Check tail padding */ + lastfrm = skb_queue_is_last(pktq, pkt); + tail_pad = 0; + tail_chop = pkt->len % bus->sgentry_align; + if (tail_chop) + tail_pad = bus->sgentry_align - tail_chop; + chain_pad = (total_len + tail_pad) % blksize; + if (lastfrm && chain_pad) + tail_pad += blksize - chain_pad; + if (skb_tailroom(pkt) < tail_pad && pkt->len > blksize) { + pkt_pad = brcmu_pkt_buf_get_skb(tail_pad + tail_chop + + bus->head_align); + if (pkt_pad == NULL) + return -ENOMEM; + ret = brcmf_sdio_txpkt_hdalign(bus, pkt_pad); + if (unlikely(ret < 0)) { + kfree_skb(pkt_pad); + return ret; + } + memcpy(pkt_pad->data, + pkt->data + pkt->len - tail_chop, + tail_chop); + *(u16 *)(pkt_pad->cb) = ALIGN_SKB_FLAG + tail_chop; + skb_trim(pkt, pkt->len - tail_chop); + skb_trim(pkt_pad, tail_pad + tail_chop); + __skb_queue_after(pktq, pkt, pkt_pad); + } else { + ntail = pkt->data_len + tail_pad - + (pkt->end - pkt->tail); + if (skb_cloned(pkt) || ntail > 0) + if (pskb_expand_head(pkt, 0, ntail, GFP_ATOMIC)) + return -ENOMEM; + if (skb_linearize(pkt)) + return -ENOMEM; + __skb_put(pkt, tail_pad); + } + + return tail_pad; +} + +/** + * brcmf_sdio_txpkt_prep - packet preparation for transmit + * @bus: brcmf_sdio structure pointer + * @pktq: packet list pointer + * @chan: virtual channel to transmit the packet + * + * Processes to be applied to the packet + * - Align data buffer pointer + * - Align data buffer length + * - Prepare header + * Return: negative value if there is error + */ +static int +brcmf_sdio_txpkt_prep(struct brcmf_sdio *bus, struct sk_buff_head *pktq, + uint chan) +{ + u16 head_pad, total_len; + struct sk_buff *pkt_next; + u8 txseq; + int ret; + struct brcmf_sdio_hdrinfo hd_info = {0}; + + txseq = bus->tx_seq; + total_len = 0; + skb_queue_walk(pktq, pkt_next) { + /* alignment packet inserted in previous + * loop cycle can be skipped as it is + * already properly aligned and does not + * need an sdpcm header. + */ + if (*(u16 *)(pkt_next->cb) & ALIGN_SKB_FLAG) + continue; + + /* align packet data pointer */ + ret = brcmf_sdio_txpkt_hdalign(bus, pkt_next); + if (ret < 0) + return ret; + head_pad = (u16)ret; + if (head_pad) + memset(pkt_next->data + bus->tx_hdrlen, 0, head_pad); + + total_len += pkt_next->len; + + hd_info.len = pkt_next->len; + hd_info.lastfrm = skb_queue_is_last(pktq, pkt_next); + if (bus->txglom && pktq->qlen > 1) { + ret = brcmf_sdio_txpkt_prep_sg(bus, pktq, + pkt_next, total_len); + if (ret < 0) + return ret; + hd_info.tail_pad = (u16)ret; + total_len += (u16)ret; + } + + hd_info.channel = chan; + hd_info.dat_offset = head_pad + bus->tx_hdrlen; + hd_info.seq_num = txseq++; + + /* Now fill the header */ + brcmf_sdio_hdpack(bus, pkt_next->data, &hd_info); + + if (BRCMF_BYTES_ON() && + ((BRCMF_CTL_ON() && chan == SDPCM_CONTROL_CHANNEL) || + (BRCMF_DATA_ON() && chan != SDPCM_CONTROL_CHANNEL))) + brcmf_dbg_hex_dump(true, pkt_next->data, hd_info.len, + "Tx Frame:\n"); + else if (BRCMF_HDRS_ON()) + brcmf_dbg_hex_dump(true, pkt_next->data, + head_pad + bus->tx_hdrlen, + "Tx Header:\n"); + } + /* Hardware length tag of the first packet should be total + * length of the chain (including padding) + */ + if (bus->txglom) + brcmf_sdio_update_hwhdr(pktq->next->data, total_len); + return 0; +} + +/** + * brcmf_sdio_txpkt_postp - packet post processing for transmit + * @bus: brcmf_sdio structure pointer + * @pktq: packet list pointer + * + * Processes to be applied to the packet + * - Remove head padding + * - Remove tail padding + */ +static void +brcmf_sdio_txpkt_postp(struct brcmf_sdio *bus, struct sk_buff_head *pktq) +{ + u8 *hdr; + u32 dat_offset; + u16 tail_pad; + u16 dummy_flags, chop_len; + struct sk_buff *pkt_next, *tmp, *pkt_prev; + + skb_queue_walk_safe(pktq, pkt_next, tmp) { + dummy_flags = *(u16 *)(pkt_next->cb); + if (dummy_flags & ALIGN_SKB_FLAG) { + chop_len = dummy_flags & ALIGN_SKB_CHOP_LEN_MASK; + if (chop_len) { + pkt_prev = pkt_next->prev; + skb_put(pkt_prev, chop_len); + } + __skb_unlink(pkt_next, pktq); + brcmu_pkt_buf_free_skb(pkt_next); + } else { + hdr = pkt_next->data + bus->tx_hdrlen - SDPCM_SWHDR_LEN; + dat_offset = le32_to_cpu(*(__le32 *)hdr); + dat_offset = (dat_offset & SDPCM_DOFFSET_MASK) >> + SDPCM_DOFFSET_SHIFT; + skb_pull(pkt_next, dat_offset); + if (bus->txglom) { + tail_pad = le16_to_cpu(*(__le16 *)(hdr - 2)); + skb_trim(pkt_next, pkt_next->len - tail_pad); + } + } + } +} + +/* Writes a HW/SW header into the packet and sends it. */ +/* Assumes: (a) header space already there, (b) caller holds lock */ +static int brcmf_sdio_txpkt(struct brcmf_sdio *bus, struct sk_buff_head *pktq, + uint chan) +{ + int ret; + struct sk_buff *pkt_next, *tmp; + + brcmf_dbg(TRACE, "Enter\n"); + + ret = brcmf_sdio_txpkt_prep(bus, pktq, chan); + if (ret) + goto done; + + sdio_claim_host(bus->sdiodev->func[1]); + ret = brcmf_sdiod_send_pkt(bus->sdiodev, pktq); + bus->sdcnt.f2txdata++; + + if (ret < 0) + brcmf_sdio_txfail(bus); + + sdio_release_host(bus->sdiodev->func[1]); + +done: + brcmf_sdio_txpkt_postp(bus, pktq); + if (ret == 0) + bus->tx_seq = (bus->tx_seq + pktq->qlen) % SDPCM_SEQ_WRAP; + skb_queue_walk_safe(pktq, pkt_next, tmp) { + __skb_unlink(pkt_next, pktq); + brcmf_txcomplete(bus->sdiodev->dev, pkt_next, ret == 0); + } + return ret; +} + +static uint brcmf_sdio_sendfromq(struct brcmf_sdio *bus, uint maxframes) +{ + struct sk_buff *pkt; + struct sk_buff_head pktq; + u32 intstatus = 0; + int ret = 0, prec_out, i; + uint cnt = 0; + u8 tx_prec_map, pkt_num; + + brcmf_dbg(TRACE, "Enter\n"); + + tx_prec_map = ~bus->flowcontrol; + + /* Send frames until the limit or some other event */ + for (cnt = 0; (cnt < maxframes) && data_ok(bus);) { + pkt_num = 1; + if (down_interruptible(&bus->tx_seq_lock)) + return cnt; + if (bus->txglom) + pkt_num = min_t(u8, bus->tx_max - bus->tx_seq, + bus->sdiodev->txglomsz); + pkt_num = min_t(u32, pkt_num, + brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol)); + __skb_queue_head_init(&pktq); + spin_lock_bh(&bus->txq_lock); + for (i = 0; i < pkt_num; i++) { + pkt = brcmu_pktq_mdeq(&bus->txq, tx_prec_map, + &prec_out); + if (pkt == NULL) + break; + __skb_queue_tail(&pktq, pkt); + } + spin_unlock_bh(&bus->txq_lock); + if (i == 0) { + up(&bus->tx_seq_lock); + break; + } + + ret = brcmf_sdio_txpkt(bus, &pktq, SDPCM_DATA_CHANNEL); + up(&bus->tx_seq_lock); + + cnt += i; + + /* In poll mode, need to check for other events */ + if (!bus->intr) { + /* Check device status, signal pending interrupt */ + sdio_claim_host(bus->sdiodev->func[1]); + ret = r_sdreg32(bus, &intstatus, + offsetof(struct sdpcmd_regs, + intstatus)); + sdio_release_host(bus->sdiodev->func[1]); + bus->sdcnt.f2txdata++; + if (ret != 0) + break; + if (intstatus & bus->hostintmask) + atomic_set(&bus->ipend, 1); + } + } + + /* Deflow-control stack if needed */ + if ((bus->sdiodev->bus_if->state == BRCMF_BUS_DATA) && + bus->txoff && (pktq_len(&bus->txq) < TXLOW)) { + bus->txoff = false; + brcmf_txflowblock(bus->sdiodev->dev, false); + } + + return cnt; +} + +static int brcmf_sdio_tx_ctrlframe(struct brcmf_sdio *bus, u8 *frame, u16 len) +{ + u8 doff; + u16 pad; + uint retries = 0; + struct brcmf_sdio_hdrinfo hd_info = {0}; + int ret; + + brcmf_dbg(TRACE, "Enter\n"); + + /* Back the pointer to make room for bus header */ + frame -= bus->tx_hdrlen; + len += bus->tx_hdrlen; + + /* Add alignment padding (optional for ctl frames) */ + doff = ((unsigned long)frame % bus->head_align); + if (doff) { + frame -= doff; + len += doff; + memset(frame + bus->tx_hdrlen, 0, doff); + } + + /* Round send length to next SDIO block */ + pad = 0; + if (bus->roundup && bus->blocksize && (len > bus->blocksize)) { + pad = bus->blocksize - (len % bus->blocksize); + if ((pad > bus->roundup) || (pad >= bus->blocksize)) + pad = 0; + } else if (len % bus->head_align) { + pad = bus->head_align - (len % bus->head_align); + } + len += pad; + + hd_info.len = len - pad; + hd_info.channel = SDPCM_CONTROL_CHANNEL; + hd_info.dat_offset = doff + bus->tx_hdrlen; + hd_info.seq_num = bus->tx_seq; + hd_info.lastfrm = true; + hd_info.tail_pad = pad; + brcmf_sdio_hdpack(bus, frame, &hd_info); + + if (bus->txglom) + brcmf_sdio_update_hwhdr(frame, len); + + brcmf_dbg_hex_dump(BRCMF_BYTES_ON() && BRCMF_CTL_ON(), + frame, len, "Tx Frame:\n"); + brcmf_dbg_hex_dump(!(BRCMF_BYTES_ON() && BRCMF_CTL_ON()) && + BRCMF_HDRS_ON(), + frame, min_t(u16, len, 16), "TxHdr:\n"); + + do { + ret = brcmf_sdiod_send_buf(bus->sdiodev, frame, len); + + if (ret < 0) + brcmf_sdio_txfail(bus); + else + bus->tx_seq = (bus->tx_seq + 1) % SDPCM_SEQ_WRAP; + } while (ret < 0 && retries++ < TXRETRIES); + + return ret; +} + +static void brcmf_sdio_bus_stop(struct device *dev) +{ + u32 local_hostintmask; + u8 saveclk; + int err; + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; + struct brcmf_sdio *bus = sdiodev->bus; + + brcmf_dbg(TRACE, "Enter\n"); + + if (bus->watchdog_tsk) { + send_sig(SIGTERM, bus->watchdog_tsk, 1); + kthread_stop(bus->watchdog_tsk); + bus->watchdog_tsk = NULL; + } + + if (bus_if->state == BRCMF_BUS_DOWN) { + sdio_claim_host(sdiodev->func[1]); + + /* Enable clock for device interrupts */ + brcmf_sdio_bus_sleep(bus, false, false); + + /* Disable and clear interrupts at the chip level also */ + w_sdreg32(bus, 0, offsetof(struct sdpcmd_regs, hostintmask)); + local_hostintmask = bus->hostintmask; + bus->hostintmask = 0; + + /* Force backplane clocks to assure F2 interrupt propagates */ + saveclk = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, + &err); + if (!err) + brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, + (saveclk | SBSDIO_FORCE_HT), &err); + if (err) + brcmf_err("Failed to force clock for F2: err %d\n", + err); + + /* Turn off the bus (F2), free any pending packets */ + brcmf_dbg(INTR, "disable SDIO interrupts\n"); + sdio_disable_func(sdiodev->func[SDIO_FUNC_2]); + + /* Clear any pending interrupts now that F2 is disabled */ + w_sdreg32(bus, local_hostintmask, + offsetof(struct sdpcmd_regs, intstatus)); + + sdio_release_host(sdiodev->func[1]); + } + /* Clear the data packet queues */ + brcmu_pktq_flush(&bus->txq, true, NULL, NULL); + + /* Clear any held glomming stuff */ + if (bus->glomd) + brcmu_pkt_buf_free_skb(bus->glomd); + brcmf_sdio_free_glom(bus); + + /* Clear rx control and wake any waiters */ + spin_lock_bh(&bus->rxctl_lock); + bus->rxlen = 0; + spin_unlock_bh(&bus->rxctl_lock); + brcmf_sdio_dcmd_resp_wake(bus); + + /* Reset some F2 state stuff */ + bus->rxskip = false; + bus->tx_seq = bus->rx_seq = 0; +} + +static inline void brcmf_sdio_clrintr(struct brcmf_sdio *bus) +{ + unsigned long flags; + + if (bus->sdiodev->oob_irq_requested) { + spin_lock_irqsave(&bus->sdiodev->irq_en_lock, flags); + if (!bus->sdiodev->irq_en && !atomic_read(&bus->ipend)) { + enable_irq(bus->sdiodev->pdata->oob_irq_nr); + bus->sdiodev->irq_en = true; + } + spin_unlock_irqrestore(&bus->sdiodev->irq_en_lock, flags); + } +} + +static void atomic_orr(int val, atomic_t *v) +{ + int old_val; + + old_val = atomic_read(v); + while (atomic_cmpxchg(v, old_val, val | old_val) != old_val) + old_val = atomic_read(v); +} + +static int brcmf_sdio_intr_rstatus(struct brcmf_sdio *bus) +{ + struct brcmf_core *buscore; + u32 addr; + unsigned long val; + int ret; + + buscore = brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV); + addr = buscore->base + offsetof(struct sdpcmd_regs, intstatus); + + val = brcmf_sdiod_regrl(bus->sdiodev, addr, &ret); + bus->sdcnt.f1regdata++; + if (ret != 0) + return ret; + + val &= bus->hostintmask; + atomic_set(&bus->fcstate, !!(val & I_HMB_FC_STATE)); + + /* Clear interrupts */ + if (val) { + brcmf_sdiod_regwl(bus->sdiodev, addr, val, &ret); + bus->sdcnt.f1regdata++; + atomic_orr(val, &bus->intstatus); + } + + return ret; +} + +static void brcmf_sdio_dpc(struct brcmf_sdio *bus) +{ + u32 newstatus = 0; + unsigned long intstatus; + uint txlimit = bus->txbound; /* Tx frames to send before resched */ + uint framecnt; /* Temporary counter of tx/rx frames */ + int err = 0; + + brcmf_dbg(TRACE, "Enter\n"); + + sdio_claim_host(bus->sdiodev->func[1]); + + /* If waiting for HTAVAIL, check status */ + if (!bus->sr_enabled && bus->clkstate == CLK_PENDING) { + u8 clkctl, devctl = 0; + +#ifdef DEBUG + /* Check for inconsistent device control */ + devctl = brcmf_sdiod_regrb(bus->sdiodev, + SBSDIO_DEVICE_CTL, &err); +#endif /* DEBUG */ + + /* Read CSR, if clock on switch to AVAIL, else ignore */ + clkctl = brcmf_sdiod_regrb(bus->sdiodev, + SBSDIO_FUNC1_CHIPCLKCSR, &err); + + brcmf_dbg(SDIO, "DPC: PENDING, devctl 0x%02x clkctl 0x%02x\n", + devctl, clkctl); + + if (SBSDIO_HTAV(clkctl)) { + devctl = brcmf_sdiod_regrb(bus->sdiodev, + SBSDIO_DEVICE_CTL, &err); + devctl &= ~SBSDIO_DEVCTL_CA_INT_ONLY; + brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_DEVICE_CTL, + devctl, &err); + bus->clkstate = CLK_AVAIL; + } + } + + /* Make sure backplane clock is on */ + brcmf_sdio_bus_sleep(bus, false, true); + + /* Pending interrupt indicates new device status */ + if (atomic_read(&bus->ipend) > 0) { + atomic_set(&bus->ipend, 0); + err = brcmf_sdio_intr_rstatus(bus); + } + + /* Start with leftover status bits */ + intstatus = atomic_xchg(&bus->intstatus, 0); + + /* Handle flow-control change: read new state in case our ack + * crossed another change interrupt. If change still set, assume + * FC ON for safety, let next loop through do the debounce. + */ + if (intstatus & I_HMB_FC_CHANGE) { + intstatus &= ~I_HMB_FC_CHANGE; + err = w_sdreg32(bus, I_HMB_FC_CHANGE, + offsetof(struct sdpcmd_regs, intstatus)); + + err = r_sdreg32(bus, &newstatus, + offsetof(struct sdpcmd_regs, intstatus)); + bus->sdcnt.f1regdata += 2; + atomic_set(&bus->fcstate, + !!(newstatus & (I_HMB_FC_STATE | I_HMB_FC_CHANGE))); + intstatus |= (newstatus & bus->hostintmask); + } + + /* Handle host mailbox indication */ + if (intstatus & I_HMB_HOST_INT) { + intstatus &= ~I_HMB_HOST_INT; + intstatus |= brcmf_sdio_hostmail(bus); + } + + sdio_release_host(bus->sdiodev->func[1]); + + /* Generally don't ask for these, can get CRC errors... */ + if (intstatus & I_WR_OOSYNC) { + brcmf_err("Dongle reports WR_OOSYNC\n"); + intstatus &= ~I_WR_OOSYNC; + } + + if (intstatus & I_RD_OOSYNC) { + brcmf_err("Dongle reports RD_OOSYNC\n"); + intstatus &= ~I_RD_OOSYNC; + } + + if (intstatus & I_SBINT) { + brcmf_err("Dongle reports SBINT\n"); + intstatus &= ~I_SBINT; + } + + /* Would be active due to wake-wlan in gSPI */ + if (intstatus & I_CHIPACTIVE) { + brcmf_dbg(INFO, "Dongle reports CHIPACTIVE\n"); + intstatus &= ~I_CHIPACTIVE; + } + + /* Ignore frame indications if rxskip is set */ + if (bus->rxskip) + intstatus &= ~I_HMB_FRAME_IND; + + /* On frame indication, read available frames */ + if ((intstatus & I_HMB_FRAME_IND) && (bus->clkstate == CLK_AVAIL)) { + brcmf_sdio_readframes(bus, bus->rxbound); + if (!bus->rxpending) + intstatus &= ~I_HMB_FRAME_IND; + } + + /* Keep still-pending events for next scheduling */ + if (intstatus) + atomic_orr(intstatus, &bus->intstatus); + + brcmf_sdio_clrintr(bus); + + if (bus->ctrl_frame_stat && (bus->clkstate == CLK_AVAIL) && + (down_interruptible(&bus->tx_seq_lock) == 0)) { + if (data_ok(bus)) { + sdio_claim_host(bus->sdiodev->func[1]); + err = brcmf_sdio_tx_ctrlframe(bus, bus->ctrl_frame_buf, + bus->ctrl_frame_len); + sdio_release_host(bus->sdiodev->func[1]); + + bus->ctrl_frame_stat = false; + brcmf_sdio_wait_event_wakeup(bus); + } + up(&bus->tx_seq_lock); + } + /* Send queued frames (limit 1 if rx may still be pending) */ + if ((bus->clkstate == CLK_AVAIL) && !atomic_read(&bus->fcstate) && + brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && txlimit && + data_ok(bus)) { + framecnt = bus->rxpending ? min(txlimit, bus->txminmax) : + txlimit; + brcmf_sdio_sendfromq(bus, framecnt); + } + + if (!brcmf_bus_ready(bus->sdiodev->bus_if) || (err != 0)) { + brcmf_err("failed backplane access over SDIO, halting operation\n"); + atomic_set(&bus->intstatus, 0); + } else if (atomic_read(&bus->intstatus) || + atomic_read(&bus->ipend) > 0 || + (!atomic_read(&bus->fcstate) && + brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol) && + data_ok(bus))) { + atomic_inc(&bus->dpc_tskcnt); + } +} + +static struct pktq *brcmf_sdio_bus_gettxq(struct device *dev) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; + struct brcmf_sdio *bus = sdiodev->bus; + + return &bus->txq; +} + +static int brcmf_sdio_bus_txdata(struct device *dev, struct sk_buff *pkt) +{ + int ret = -EBADE; + uint prec; + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; + struct brcmf_sdio *bus = sdiodev->bus; + + brcmf_dbg(TRACE, "Enter: pkt: data %p len %d\n", pkt->data, pkt->len); + + /* Add space for the header */ + skb_push(pkt, bus->tx_hdrlen); + /* precondition: IS_ALIGNED((unsigned long)(pkt->data), 2) */ + + prec = prio2prec((pkt->priority & PRIOMASK)); + + /* Check for existing queue, current flow-control, + pending event, or pending clock */ + brcmf_dbg(TRACE, "deferring pktq len %d\n", pktq_len(&bus->txq)); + bus->sdcnt.fcqueued++; + + /* Priority based enq */ + spin_lock_bh(&bus->txq_lock); + /* reset bus_flags in packet cb */ + *(u16 *)(pkt->cb) = 0; + if (!brcmf_c_prec_enq(bus->sdiodev->dev, &bus->txq, pkt, prec)) { + skb_pull(pkt, bus->tx_hdrlen); + brcmf_err("out of bus->txq !!!\n"); + ret = -ENOSR; + } else { + ret = 0; + } + + if (pktq_len(&bus->txq) >= TXHI) { + bus->txoff = true; + brcmf_txflowblock(bus->sdiodev->dev, true); + } + spin_unlock_bh(&bus->txq_lock); + +#ifdef DEBUG + if (pktq_plen(&bus->txq, prec) > qcount[prec]) + qcount[prec] = pktq_plen(&bus->txq, prec); +#endif + + if (atomic_read(&bus->dpc_tskcnt) == 0) { + atomic_inc(&bus->dpc_tskcnt); + queue_work(bus->brcmf_wq, &bus->datawork); + } + + return ret; +} + +#ifdef DEBUG +#define CONSOLE_LINE_MAX 192 + +static int brcmf_sdio_readconsole(struct brcmf_sdio *bus) +{ + struct brcmf_console *c = &bus->console; + u8 line[CONSOLE_LINE_MAX], ch; + u32 n, idx, addr; + int rv; + + /* Don't do anything until FWREADY updates console address */ + if (bus->console_addr == 0) + return 0; + + /* Read console log struct */ + addr = bus->console_addr + offsetof(struct rte_console, log_le); + rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, (u8 *)&c->log_le, + sizeof(c->log_le)); + if (rv < 0) + return rv; + + /* Allocate console buffer (one time only) */ + if (c->buf == NULL) { + c->bufsize = le32_to_cpu(c->log_le.buf_size); + c->buf = kmalloc(c->bufsize, GFP_ATOMIC); + if (c->buf == NULL) + return -ENOMEM; + } + + idx = le32_to_cpu(c->log_le.idx); + + /* Protect against corrupt value */ + if (idx > c->bufsize) + return -EBADE; + + /* Skip reading the console buffer if the index pointer + has not moved */ + if (idx == c->last) + return 0; + + /* Read the console buffer */ + addr = le32_to_cpu(c->log_le.buf); + rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, c->buf, c->bufsize); + if (rv < 0) + return rv; + + while (c->last != idx) { + for (n = 0; n < CONSOLE_LINE_MAX - 2; n++) { + if (c->last == idx) { + /* This would output a partial line. + * Instead, back up + * the buffer pointer and output this + * line next time around. + */ + if (c->last >= n) + c->last -= n; + else + c->last = c->bufsize - n; + goto break2; + } + ch = c->buf[c->last]; + c->last = (c->last + 1) % c->bufsize; + if (ch == '\n') + break; + line[n] = ch; + } + + if (n > 0) { + if (line[n - 1] == '\r') + n--; + line[n] = 0; + pr_debug("CONSOLE: %s\n", line); + } + } +break2: + + return 0; +} +#endif /* DEBUG */ + +static int +brcmf_sdio_bus_txctl(struct device *dev, unsigned char *msg, uint msglen) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; + struct brcmf_sdio *bus = sdiodev->bus; + int ret = -1; + + brcmf_dbg(TRACE, "Enter\n"); + + if (down_interruptible(&bus->tx_seq_lock)) + return -EINTR; + + if (!data_ok(bus)) { + brcmf_dbg(INFO, "No bus credit bus->tx_max %d, bus->tx_seq %d\n", + bus->tx_max, bus->tx_seq); + up(&bus->tx_seq_lock); + /* Send from dpc */ + bus->ctrl_frame_buf = msg; + bus->ctrl_frame_len = msglen; + bus->ctrl_frame_stat = true; + + wait_event_interruptible_timeout(bus->ctrl_wait, + !bus->ctrl_frame_stat, + msecs_to_jiffies(2000)); + + if (!bus->ctrl_frame_stat) { + brcmf_dbg(SDIO, "ctrl_frame_stat == false\n"); + ret = 0; + } else { + brcmf_dbg(SDIO, "ctrl_frame_stat == true\n"); + bus->ctrl_frame_stat = false; + if (down_interruptible(&bus->tx_seq_lock)) + return -EINTR; + ret = -1; + } + } + if (ret == -1) { + sdio_claim_host(bus->sdiodev->func[1]); + brcmf_sdio_bus_sleep(bus, false, false); + ret = brcmf_sdio_tx_ctrlframe(bus, msg, msglen); + sdio_release_host(bus->sdiodev->func[1]); + up(&bus->tx_seq_lock); + } + + if (ret) + bus->sdcnt.tx_ctlerrs++; + else + bus->sdcnt.tx_ctlpkts++; + + return ret ? -EIO : 0; +} + +#ifdef DEBUG +static int brcmf_sdio_dump_console(struct brcmf_sdio *bus, + struct sdpcm_shared *sh, char __user *data, + size_t count) +{ + u32 addr, console_ptr, console_size, console_index; + char *conbuf = NULL; + __le32 sh_val; + int rv; + loff_t pos = 0; + int nbytes = 0; + + /* obtain console information from device memory */ + addr = sh->console_addr + offsetof(struct rte_console, log_le); + rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, + (u8 *)&sh_val, sizeof(u32)); + if (rv < 0) + return rv; + console_ptr = le32_to_cpu(sh_val); + + addr = sh->console_addr + offsetof(struct rte_console, log_le.buf_size); + rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, + (u8 *)&sh_val, sizeof(u32)); + if (rv < 0) + return rv; + console_size = le32_to_cpu(sh_val); + + addr = sh->console_addr + offsetof(struct rte_console, log_le.idx); + rv = brcmf_sdiod_ramrw(bus->sdiodev, false, addr, + (u8 *)&sh_val, sizeof(u32)); + if (rv < 0) + return rv; + console_index = le32_to_cpu(sh_val); + + /* allocate buffer for console data */ + if (console_size <= CONSOLE_BUFFER_MAX) + conbuf = vzalloc(console_size+1); + + if (!conbuf) + return -ENOMEM; + + /* obtain the console data from device */ + conbuf[console_size] = '\0'; + rv = brcmf_sdiod_ramrw(bus->sdiodev, false, console_ptr, (u8 *)conbuf, + console_size); + if (rv < 0) + goto done; + + rv = simple_read_from_buffer(data, count, &pos, + conbuf + console_index, + console_size - console_index); + if (rv < 0) + goto done; + + nbytes = rv; + if (console_index > 0) { + pos = 0; + rv = simple_read_from_buffer(data+nbytes, count, &pos, + conbuf, console_index - 1); + if (rv < 0) + goto done; + rv += nbytes; + } +done: + vfree(conbuf); + return rv; +} + +static int brcmf_sdio_trap_info(struct brcmf_sdio *bus, struct sdpcm_shared *sh, + char __user *data, size_t count) +{ + int error, res; + char buf[350]; + struct brcmf_trap_info tr; + loff_t pos = 0; + + if ((sh->flags & SDPCM_SHARED_TRAP) == 0) { + brcmf_dbg(INFO, "no trap in firmware\n"); + return 0; + } + + error = brcmf_sdiod_ramrw(bus->sdiodev, false, sh->trap_addr, (u8 *)&tr, + sizeof(struct brcmf_trap_info)); + if (error < 0) + return error; + + res = scnprintf(buf, sizeof(buf), + "dongle trap info: type 0x%x @ epc 0x%08x\n" + " cpsr 0x%08x spsr 0x%08x sp 0x%08x\n" + " lr 0x%08x pc 0x%08x offset 0x%x\n" + " r0 0x%08x r1 0x%08x r2 0x%08x r3 0x%08x\n" + " r4 0x%08x r5 0x%08x r6 0x%08x r7 0x%08x\n", + le32_to_cpu(tr.type), le32_to_cpu(tr.epc), + le32_to_cpu(tr.cpsr), le32_to_cpu(tr.spsr), + le32_to_cpu(tr.r13), le32_to_cpu(tr.r14), + le32_to_cpu(tr.pc), sh->trap_addr, + le32_to_cpu(tr.r0), le32_to_cpu(tr.r1), + le32_to_cpu(tr.r2), le32_to_cpu(tr.r3), + le32_to_cpu(tr.r4), le32_to_cpu(tr.r5), + le32_to_cpu(tr.r6), le32_to_cpu(tr.r7)); + + return simple_read_from_buffer(data, count, &pos, buf, res); +} + +static int brcmf_sdio_assert_info(struct brcmf_sdio *bus, + struct sdpcm_shared *sh, char __user *data, + size_t count) +{ + int error = 0; + char buf[200]; + char file[80] = "?"; + char expr[80] = "<???>"; + int res; + loff_t pos = 0; + + if ((sh->flags & SDPCM_SHARED_ASSERT_BUILT) == 0) { + brcmf_dbg(INFO, "firmware not built with -assert\n"); + return 0; + } else if ((sh->flags & SDPCM_SHARED_ASSERT) == 0) { + brcmf_dbg(INFO, "no assert in dongle\n"); + return 0; + } + + sdio_claim_host(bus->sdiodev->func[1]); + if (sh->assert_file_addr != 0) { + error = brcmf_sdiod_ramrw(bus->sdiodev, false, + sh->assert_file_addr, (u8 *)file, 80); + if (error < 0) + return error; + } + if (sh->assert_exp_addr != 0) { + error = brcmf_sdiod_ramrw(bus->sdiodev, false, + sh->assert_exp_addr, (u8 *)expr, 80); + if (error < 0) + return error; + } + sdio_release_host(bus->sdiodev->func[1]); + + res = scnprintf(buf, sizeof(buf), + "dongle assert: %s:%d: assert(%s)\n", + file, sh->assert_line, expr); + return simple_read_from_buffer(data, count, &pos, buf, res); +} + +static int brcmf_sdio_checkdied(struct brcmf_sdio *bus) +{ + int error; + struct sdpcm_shared sh; + + error = brcmf_sdio_readshared(bus, &sh); + + if (error < 0) + return error; + + if ((sh.flags & SDPCM_SHARED_ASSERT_BUILT) == 0) + brcmf_dbg(INFO, "firmware not built with -assert\n"); + else if (sh.flags & SDPCM_SHARED_ASSERT) + brcmf_err("assertion in dongle\n"); + + if (sh.flags & SDPCM_SHARED_TRAP) + brcmf_err("firmware trap in dongle\n"); + + return 0; +} + +static int brcmf_sdio_died_dump(struct brcmf_sdio *bus, char __user *data, + size_t count, loff_t *ppos) +{ + int error = 0; + struct sdpcm_shared sh; + int nbytes = 0; + loff_t pos = *ppos; + + if (pos != 0) + return 0; + + error = brcmf_sdio_readshared(bus, &sh); + if (error < 0) + goto done; + + error = brcmf_sdio_assert_info(bus, &sh, data, count); + if (error < 0) + goto done; + nbytes = error; + + error = brcmf_sdio_trap_info(bus, &sh, data+nbytes, count); + if (error < 0) + goto done; + nbytes += error; + + error = brcmf_sdio_dump_console(bus, &sh, data+nbytes, count); + if (error < 0) + goto done; + nbytes += error; + + error = nbytes; + *ppos += nbytes; +done: + return error; +} + +static ssize_t brcmf_sdio_forensic_read(struct file *f, char __user *data, + size_t count, loff_t *ppos) +{ + struct brcmf_sdio *bus = f->private_data; + int res; + + res = brcmf_sdio_died_dump(bus, data, count, ppos); + if (res > 0) + *ppos += res; + return (ssize_t)res; +} + +static const struct file_operations brcmf_sdio_forensic_ops = { + .owner = THIS_MODULE, + .open = simple_open, + .read = brcmf_sdio_forensic_read +}; + +static void brcmf_sdio_debugfs_create(struct brcmf_sdio *bus) +{ + struct brcmf_pub *drvr = bus->sdiodev->bus_if->drvr; + struct dentry *dentry = brcmf_debugfs_get_devdir(drvr); + + if (IS_ERR_OR_NULL(dentry)) + return; + + debugfs_create_file("forensics", S_IRUGO, dentry, bus, + &brcmf_sdio_forensic_ops); + brcmf_debugfs_create_sdio_count(drvr, &bus->sdcnt); + debugfs_create_u32("console_interval", 0644, dentry, + &bus->console_interval); +} +#else +static int brcmf_sdio_checkdied(struct brcmf_sdio *bus) +{ + return 0; +} + +static void brcmf_sdio_debugfs_create(struct brcmf_sdio *bus) +{ +} +#endif /* DEBUG */ + +static int +brcmf_sdio_bus_rxctl(struct device *dev, unsigned char *msg, uint msglen) +{ + int timeleft; + uint rxlen = 0; + bool pending; + u8 *buf; + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; + struct brcmf_sdio *bus = sdiodev->bus; + + brcmf_dbg(TRACE, "Enter\n"); + + /* Wait until control frame is available */ + timeleft = brcmf_sdio_dcmd_resp_wait(bus, &bus->rxlen, &pending); + + spin_lock_bh(&bus->rxctl_lock); + rxlen = bus->rxlen; + memcpy(msg, bus->rxctl, min(msglen, rxlen)); + bus->rxctl = NULL; + buf = bus->rxctl_orig; + bus->rxctl_orig = NULL; + bus->rxlen = 0; + spin_unlock_bh(&bus->rxctl_lock); + vfree(buf); + + if (rxlen) { + brcmf_dbg(CTL, "resumed on rxctl frame, got %d expected %d\n", + rxlen, msglen); + } else if (timeleft == 0) { + brcmf_err("resumed on timeout\n"); + brcmf_sdio_checkdied(bus); + } else if (pending) { + brcmf_dbg(CTL, "cancelled\n"); + return -ERESTARTSYS; + } else { + brcmf_dbg(CTL, "resumed for unknown reason?\n"); + brcmf_sdio_checkdied(bus); + } + + if (rxlen) + bus->sdcnt.rx_ctlpkts++; + else + bus->sdcnt.rx_ctlerrs++; + + return rxlen ? (int)rxlen : -ETIMEDOUT; +} + +#ifdef DEBUG +static bool +brcmf_sdio_verifymemory(struct brcmf_sdio_dev *sdiodev, u32 ram_addr, + u8 *ram_data, uint ram_sz) +{ + char *ram_cmp; + int err; + bool ret = true; + int address; + int offset; + int len; + + /* read back and verify */ + brcmf_dbg(INFO, "Compare RAM dl & ul at 0x%08x; size=%d\n", ram_addr, + ram_sz); + ram_cmp = kmalloc(MEMBLOCK, GFP_KERNEL); + /* do not proceed while no memory but */ + if (!ram_cmp) + return true; + + address = ram_addr; + offset = 0; + while (offset < ram_sz) { + len = ((offset + MEMBLOCK) < ram_sz) ? MEMBLOCK : + ram_sz - offset; + err = brcmf_sdiod_ramrw(sdiodev, false, address, ram_cmp, len); + if (err) { + brcmf_err("error %d on reading %d membytes at 0x%08x\n", + err, len, address); + ret = false; + break; + } else if (memcmp(ram_cmp, &ram_data[offset], len)) { + brcmf_err("Downloaded RAM image is corrupted, block offset is %d, len is %d\n", + offset, len); + ret = false; + break; + } + offset += len; + address += len; + } + + kfree(ram_cmp); + + return ret; +} +#else /* DEBUG */ +static bool +brcmf_sdio_verifymemory(struct brcmf_sdio_dev *sdiodev, u32 ram_addr, + u8 *ram_data, uint ram_sz) +{ + return true; +} +#endif /* DEBUG */ + +static int brcmf_sdio_download_code_file(struct brcmf_sdio *bus, + const struct firmware *fw) +{ + int err; + + brcmf_dbg(TRACE, "Enter\n"); + + err = brcmf_sdiod_ramrw(bus->sdiodev, true, bus->ci->rambase, + (u8 *)fw->data, fw->size); + if (err) + brcmf_err("error %d on writing %d membytes at 0x%08x\n", + err, (int)fw->size, bus->ci->rambase); + else if (!brcmf_sdio_verifymemory(bus->sdiodev, bus->ci->rambase, + (u8 *)fw->data, fw->size)) + err = -EIO; + + return err; +} + +static int brcmf_sdio_download_nvram(struct brcmf_sdio *bus, + void *vars, u32 varsz) +{ + int address; + int err; + + brcmf_dbg(TRACE, "Enter\n"); + + address = bus->ci->ramsize - varsz + bus->ci->rambase; + err = brcmf_sdiod_ramrw(bus->sdiodev, true, address, vars, varsz); + if (err) + brcmf_err("error %d on writing %d nvram bytes at 0x%08x\n", + err, varsz, address); + else if (!brcmf_sdio_verifymemory(bus->sdiodev, address, vars, varsz)) + err = -EIO; + + return err; +} + +static int brcmf_sdio_download_firmware(struct brcmf_sdio *bus, + const struct firmware *fw, + void *nvram, u32 nvlen) +{ + int bcmerror = -EFAULT; + u32 rstvec; + + sdio_claim_host(bus->sdiodev->func[1]); + brcmf_sdio_clkctl(bus, CLK_AVAIL, false); + + /* Keep arm in reset */ + brcmf_chip_enter_download(bus->ci); + + rstvec = get_unaligned_le32(fw->data); + brcmf_dbg(SDIO, "firmware rstvec: %x\n", rstvec); + + bcmerror = brcmf_sdio_download_code_file(bus, fw); + release_firmware(fw); + if (bcmerror) { + brcmf_err("dongle image file download failed\n"); + brcmf_fw_nvram_free(nvram); + goto err; + } + + bcmerror = brcmf_sdio_download_nvram(bus, nvram, nvlen); + brcmf_fw_nvram_free(nvram); + if (bcmerror) { + brcmf_err("dongle nvram file download failed\n"); + goto err; + } + + /* Take arm out of reset */ + if (!brcmf_chip_exit_download(bus->ci, rstvec)) { + brcmf_err("error getting out of ARM core reset\n"); + goto err; + } + + /* Allow HT Clock now that the ARM is running. */ + brcmf_bus_change_state(bus->sdiodev->bus_if, BRCMF_BUS_LOAD); + bcmerror = 0; + +err: + brcmf_sdio_clkctl(bus, CLK_SDONLY, false); + sdio_release_host(bus->sdiodev->func[1]); + return bcmerror; +} + +static void brcmf_sdio_sr_init(struct brcmf_sdio *bus) +{ + int err = 0; + u8 val; + + brcmf_dbg(TRACE, "Enter\n"); + + val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_WAKEUPCTRL, &err); + if (err) { + brcmf_err("error reading SBSDIO_FUNC1_WAKEUPCTRL\n"); + return; + } + + val |= 1 << SBSDIO_FUNC1_WCTRL_HTWAIT_SHIFT; + brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_WAKEUPCTRL, val, &err); + if (err) { + brcmf_err("error writing SBSDIO_FUNC1_WAKEUPCTRL\n"); + return; + } + + /* Add CMD14 Support */ + brcmf_sdiod_regwb(bus->sdiodev, SDIO_CCCR_BRCM_CARDCAP, + (SDIO_CCCR_BRCM_CARDCAP_CMD14_SUPPORT | + SDIO_CCCR_BRCM_CARDCAP_CMD14_EXT), + &err); + if (err) { + brcmf_err("error writing SDIO_CCCR_BRCM_CARDCAP\n"); + return; + } + + brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, + SBSDIO_FORCE_HT, &err); + if (err) { + brcmf_err("error writing SBSDIO_FUNC1_CHIPCLKCSR\n"); + return; + } + + /* set flag */ + bus->sr_enabled = true; + brcmf_dbg(INFO, "SR enabled\n"); +} + +/* enable KSO bit */ +static int brcmf_sdio_kso_init(struct brcmf_sdio *bus) +{ + u8 val; + int err = 0; + + brcmf_dbg(TRACE, "Enter\n"); + + /* KSO bit added in SDIO core rev 12 */ + if (brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV)->rev < 12) + return 0; + + val = brcmf_sdiod_regrb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, &err); + if (err) { + brcmf_err("error reading SBSDIO_FUNC1_SLEEPCSR\n"); + return err; + } + + if (!(val & SBSDIO_FUNC1_SLEEPCSR_KSO_MASK)) { + val |= (SBSDIO_FUNC1_SLEEPCSR_KSO_EN << + SBSDIO_FUNC1_SLEEPCSR_KSO_SHIFT); + brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_SLEEPCSR, + val, &err); + if (err) { + brcmf_err("error writing SBSDIO_FUNC1_SLEEPCSR\n"); + return err; + } + } + + return 0; +} + + +static int brcmf_sdio_bus_preinit(struct device *dev) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; + struct brcmf_sdio *bus = sdiodev->bus; + uint pad_size; + u32 value; + int err; + + /* the commands below use the terms tx and rx from + * a device perspective, ie. bus:txglom affects the + * bus transfers from device to host. + */ + if (brcmf_chip_get_core(bus->ci, BCMA_CORE_SDIO_DEV)->rev < 12) { + /* for sdio core rev < 12, disable txgloming */ + value = 0; + err = brcmf_iovar_data_set(dev, "bus:txglom", &value, + sizeof(u32)); + } else { + /* otherwise, set txglomalign */ + value = 4; + if (sdiodev->pdata) + value = sdiodev->pdata->sd_sgentry_align; + /* SDIO ADMA requires at least 32 bit alignment */ + value = max_t(u32, value, 4); + err = brcmf_iovar_data_set(dev, "bus:txglomalign", &value, + sizeof(u32)); + } + + if (err < 0) + goto done; + + bus->tx_hdrlen = SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN; + if (sdiodev->sg_support) { + bus->txglom = false; + value = 1; + pad_size = bus->sdiodev->func[2]->cur_blksize << 1; + err = brcmf_iovar_data_set(bus->sdiodev->dev, "bus:rxglom", + &value, sizeof(u32)); + if (err < 0) { + /* bus:rxglom is allowed to fail */ + err = 0; + } else { + bus->txglom = true; + bus->tx_hdrlen += SDPCM_HWEXT_LEN; + } + } + brcmf_bus_add_txhdrlen(bus->sdiodev->dev, bus->tx_hdrlen); + +done: + return err; +} + +void brcmf_sdio_isr(struct brcmf_sdio *bus) +{ + brcmf_dbg(TRACE, "Enter\n"); + + if (!bus) { + brcmf_err("bus is null pointer, exiting\n"); + return; + } + + if (!brcmf_bus_ready(bus->sdiodev->bus_if)) { + brcmf_err("bus is down. we have nothing to do\n"); + return; + } + /* Count the interrupt call */ + bus->sdcnt.intrcount++; + if (in_interrupt()) + atomic_set(&bus->ipend, 1); + else + if (brcmf_sdio_intr_rstatus(bus)) { + brcmf_err("failed backplane access\n"); + } + + /* Disable additional interrupts (is this needed now)? */ + if (!bus->intr) + brcmf_err("isr w/o interrupt configured!\n"); + + atomic_inc(&bus->dpc_tskcnt); + queue_work(bus->brcmf_wq, &bus->datawork); +} + +static bool brcmf_sdio_bus_watchdog(struct brcmf_sdio *bus) +{ +#ifdef DEBUG + struct brcmf_bus *bus_if = dev_get_drvdata(bus->sdiodev->dev); +#endif /* DEBUG */ + + brcmf_dbg(TIMER, "Enter\n"); + + /* Poll period: check device if appropriate. */ + if (!bus->sr_enabled && + bus->poll && (++bus->polltick >= bus->pollrate)) { + u32 intstatus = 0; + + /* Reset poll tick */ + bus->polltick = 0; + + /* Check device if no interrupts */ + if (!bus->intr || + (bus->sdcnt.intrcount == bus->sdcnt.lastintrs)) { + + if (atomic_read(&bus->dpc_tskcnt) == 0) { + u8 devpend; + + sdio_claim_host(bus->sdiodev->func[1]); + devpend = brcmf_sdiod_regrb(bus->sdiodev, + SDIO_CCCR_INTx, + NULL); + sdio_release_host(bus->sdiodev->func[1]); + intstatus = + devpend & (INTR_STATUS_FUNC1 | + INTR_STATUS_FUNC2); + } + + /* If there is something, make like the ISR and + schedule the DPC */ + if (intstatus) { + bus->sdcnt.pollcnt++; + atomic_set(&bus->ipend, 1); + + atomic_inc(&bus->dpc_tskcnt); + queue_work(bus->brcmf_wq, &bus->datawork); + } + } + + /* Update interrupt tracking */ + bus->sdcnt.lastintrs = bus->sdcnt.intrcount; + } +#ifdef DEBUG + /* Poll for console output periodically */ + if (bus_if && bus_if->state == BRCMF_BUS_DATA && + bus->console_interval != 0) { + bus->console.count += BRCMF_WD_POLL_MS; + if (bus->console.count >= bus->console_interval) { + bus->console.count -= bus->console_interval; + sdio_claim_host(bus->sdiodev->func[1]); + /* Make sure backplane clock is on */ + brcmf_sdio_bus_sleep(bus, false, false); + if (brcmf_sdio_readconsole(bus) < 0) + /* stop on error */ + bus->console_interval = 0; + sdio_release_host(bus->sdiodev->func[1]); + } + } +#endif /* DEBUG */ + + /* On idle timeout clear activity flag and/or turn off clock */ + if ((bus->idletime > 0) && (bus->clkstate == CLK_AVAIL)) { + if (++bus->idlecount >= bus->idletime) { + bus->idlecount = 0; + if (bus->activity) { + bus->activity = false; + brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS); + } else { + brcmf_dbg(SDIO, "idle\n"); + sdio_claim_host(bus->sdiodev->func[1]); + brcmf_sdio_bus_sleep(bus, true, false); + sdio_release_host(bus->sdiodev->func[1]); + } + } + } + + return (atomic_read(&bus->ipend) > 0); +} + +static void brcmf_sdio_dataworker(struct work_struct *work) +{ + struct brcmf_sdio *bus = container_of(work, struct brcmf_sdio, + datawork); + + while (atomic_read(&bus->dpc_tskcnt)) { + atomic_set(&bus->dpc_tskcnt, 0); + brcmf_sdio_dpc(bus); + } +} + +static void +brcmf_sdio_drivestrengthinit(struct brcmf_sdio_dev *sdiodev, + struct brcmf_chip *ci, u32 drivestrength) +{ + const struct sdiod_drive_str *str_tab = NULL; + u32 str_mask; + u32 str_shift; + u32 base; + u32 i; + u32 drivestrength_sel = 0; + u32 cc_data_temp; + u32 addr; + + if (!(ci->cc_caps & CC_CAP_PMU)) + return; + + switch (SDIOD_DRVSTR_KEY(ci->chip, ci->pmurev)) { + case SDIOD_DRVSTR_KEY(BCM4330_CHIP_ID, 12): + str_tab = sdiod_drvstr_tab1_1v8; + str_mask = 0x00003800; + str_shift = 11; + break; + case SDIOD_DRVSTR_KEY(BCM4334_CHIP_ID, 17): + str_tab = sdiod_drvstr_tab6_1v8; + str_mask = 0x00001800; + str_shift = 11; + break; + case SDIOD_DRVSTR_KEY(BCM43143_CHIP_ID, 17): + /* note: 43143 does not support tristate */ + i = ARRAY_SIZE(sdiod_drvstr_tab2_3v3) - 1; + if (drivestrength >= sdiod_drvstr_tab2_3v3[i].strength) { + str_tab = sdiod_drvstr_tab2_3v3; + str_mask = 0x00000007; + str_shift = 0; + } else + brcmf_err("Invalid SDIO Drive strength for chip %s, strength=%d\n", + ci->name, drivestrength); + break; + case SDIOD_DRVSTR_KEY(BCM43362_CHIP_ID, 13): + str_tab = sdiod_drive_strength_tab5_1v8; + str_mask = 0x00003800; + str_shift = 11; + break; + default: + brcmf_err("No SDIO Drive strength init done for chip %s rev %d pmurev %d\n", + ci->name, ci->chiprev, ci->pmurev); + break; + } + + if (str_tab != NULL) { + for (i = 0; str_tab[i].strength != 0; i++) { + if (drivestrength >= str_tab[i].strength) { + drivestrength_sel = str_tab[i].sel; + break; + } + } + base = brcmf_chip_get_chipcommon(ci)->base; + addr = CORE_CC_REG(base, chipcontrol_addr); + brcmf_sdiod_regwl(sdiodev, addr, 1, NULL); + cc_data_temp = brcmf_sdiod_regrl(sdiodev, addr, NULL); + cc_data_temp &= ~str_mask; + drivestrength_sel <<= str_shift; + cc_data_temp |= drivestrength_sel; + brcmf_sdiod_regwl(sdiodev, addr, cc_data_temp, NULL); + + brcmf_dbg(INFO, "SDIO: %d mA (req=%d mA) drive strength selected, set to 0x%08x\n", + str_tab[i].strength, drivestrength, cc_data_temp); + } +} + +static int brcmf_sdio_buscoreprep(void *ctx) +{ + struct brcmf_sdio_dev *sdiodev = ctx; + int err = 0; + u8 clkval, clkset; + + /* Try forcing SDIO core to do ALPAvail request only */ + clkset = SBSDIO_FORCE_HW_CLKREQ_OFF | SBSDIO_ALP_AVAIL_REQ; + brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, clkset, &err); + if (err) { + brcmf_err("error writing for HT off\n"); + return err; + } + + /* If register supported, wait for ALPAvail and then force ALP */ + /* This may take up to 15 milliseconds */ + clkval = brcmf_sdiod_regrb(sdiodev, + SBSDIO_FUNC1_CHIPCLKCSR, NULL); + + if ((clkval & ~SBSDIO_AVBITS) != clkset) { + brcmf_err("ChipClkCSR access: wrote 0x%02x read 0x%02x\n", + clkset, clkval); + return -EACCES; + } + + SPINWAIT(((clkval = brcmf_sdiod_regrb(sdiodev, + SBSDIO_FUNC1_CHIPCLKCSR, NULL)), + !SBSDIO_ALPAV(clkval)), + PMU_MAX_TRANSITION_DLY); + if (!SBSDIO_ALPAV(clkval)) { + brcmf_err("timeout on ALPAV wait, clkval 0x%02x\n", + clkval); + return -EBUSY; + } + + clkset = SBSDIO_FORCE_HW_CLKREQ_OFF | SBSDIO_FORCE_ALP; + brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, clkset, &err); + udelay(65); + + /* Also, disable the extra SDIO pull-ups */ + brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_SDIOPULLUP, 0, NULL); + + return 0; +} + +static void brcmf_sdio_buscore_exitdl(void *ctx, struct brcmf_chip *chip, + u32 rstvec) +{ + struct brcmf_sdio_dev *sdiodev = ctx; + struct brcmf_core *core; + u32 reg_addr; + + /* clear all interrupts */ + core = brcmf_chip_get_core(chip, BCMA_CORE_SDIO_DEV); + reg_addr = core->base + offsetof(struct sdpcmd_regs, intstatus); + brcmf_sdiod_regwl(sdiodev, reg_addr, 0xFFFFFFFF, NULL); + + if (rstvec) + /* Write reset vector to address 0 */ + brcmf_sdiod_ramrw(sdiodev, true, 0, (void *)&rstvec, + sizeof(rstvec)); +} + +static u32 brcmf_sdio_buscore_read32(void *ctx, u32 addr) +{ + struct brcmf_sdio_dev *sdiodev = ctx; + u32 val, rev; + + val = brcmf_sdiod_regrl(sdiodev, addr, NULL); + if (sdiodev->func[0]->device == SDIO_DEVICE_ID_BROADCOM_4335_4339 && + addr == CORE_CC_REG(SI_ENUM_BASE, chipid)) { + rev = (val & CID_REV_MASK) >> CID_REV_SHIFT; + if (rev >= 2) { + val &= ~CID_ID_MASK; + val |= BCM4339_CHIP_ID; + } + } + return val; +} + +static void brcmf_sdio_buscore_write32(void *ctx, u32 addr, u32 val) +{ + struct brcmf_sdio_dev *sdiodev = ctx; + + brcmf_sdiod_regwl(sdiodev, addr, val, NULL); +} + +static const struct brcmf_buscore_ops brcmf_sdio_buscore_ops = { + .prepare = brcmf_sdio_buscoreprep, + .exit_dl = brcmf_sdio_buscore_exitdl, + .read32 = brcmf_sdio_buscore_read32, + .write32 = brcmf_sdio_buscore_write32, +}; + +static bool +brcmf_sdio_probe_attach(struct brcmf_sdio *bus) +{ + u8 clkctl = 0; + int err = 0; + int reg_addr; + u32 reg_val; + u32 drivestrength; + + sdio_claim_host(bus->sdiodev->func[1]); + + pr_debug("F1 signature read @0x18000000=0x%4x\n", + brcmf_sdiod_regrl(bus->sdiodev, SI_ENUM_BASE, NULL)); + + /* + * Force PLL off until brcmf_chip_attach() + * programs PLL control regs + */ + + brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, + BRCMF_INIT_CLKCTL1, &err); + if (!err) + clkctl = brcmf_sdiod_regrb(bus->sdiodev, + SBSDIO_FUNC1_CHIPCLKCSR, &err); + + if (err || ((clkctl & ~SBSDIO_AVBITS) != BRCMF_INIT_CLKCTL1)) { + brcmf_err("ChipClkCSR access: err %d wrote 0x%02x read 0x%02x\n", + err, BRCMF_INIT_CLKCTL1, clkctl); + goto fail; + } + + /* SDIO register access works so moving + * state from UNKNOWN to DOWN. + */ + brcmf_bus_change_state(bus->sdiodev->bus_if, BRCMF_BUS_DOWN); + + bus->ci = brcmf_chip_attach(bus->sdiodev, &brcmf_sdio_buscore_ops); + if (IS_ERR(bus->ci)) { + brcmf_err("brcmf_chip_attach failed!\n"); + bus->ci = NULL; + goto fail; + } + + if (brcmf_sdio_kso_init(bus)) { + brcmf_err("error enabling KSO\n"); + goto fail; + } + + if ((bus->sdiodev->pdata) && (bus->sdiodev->pdata->drive_strength)) + drivestrength = bus->sdiodev->pdata->drive_strength; + else + drivestrength = DEFAULT_SDIO_DRIVE_STRENGTH; + brcmf_sdio_drivestrengthinit(bus->sdiodev, bus->ci, drivestrength); + + /* Get info on the SOCRAM cores... */ + bus->ramsize = bus->ci->ramsize; + if (!(bus->ramsize)) { + brcmf_err("failed to find SOCRAM memory!\n"); + goto fail; + } + + /* Set card control so an SDIO card reset does a WLAN backplane reset */ + reg_val = brcmf_sdiod_regrb(bus->sdiodev, + SDIO_CCCR_BRCM_CARDCTRL, &err); + if (err) + goto fail; + + reg_val |= SDIO_CCCR_BRCM_CARDCTRL_WLANRESET; + + brcmf_sdiod_regwb(bus->sdiodev, + SDIO_CCCR_BRCM_CARDCTRL, reg_val, &err); + if (err) + goto fail; + + /* set PMUControl so a backplane reset does PMU state reload */ + reg_addr = CORE_CC_REG(brcmf_chip_get_chipcommon(bus->ci)->base, + pmucontrol); + reg_val = brcmf_sdiod_regrl(bus->sdiodev, reg_addr, &err); + if (err) + goto fail; + + reg_val |= (BCMA_CC_PMU_CTL_RES_RELOAD << BCMA_CC_PMU_CTL_RES_SHIFT); + + brcmf_sdiod_regwl(bus->sdiodev, reg_addr, reg_val, &err); + if (err) + goto fail; + + sdio_release_host(bus->sdiodev->func[1]); + + brcmu_pktq_init(&bus->txq, (PRIOMASK + 1), TXQLEN); + + /* allocate header buffer */ + bus->hdrbuf = kzalloc(MAX_HDR_READ + bus->head_align, GFP_KERNEL); + if (!bus->hdrbuf) + return false; + /* Locate an appropriately-aligned portion of hdrbuf */ + bus->rxhdr = (u8 *) roundup((unsigned long)&bus->hdrbuf[0], + bus->head_align); + + /* Set the poll and/or interrupt flags */ + bus->intr = true; + bus->poll = false; + if (bus->poll) + bus->pollrate = 1; + + return true; + +fail: + sdio_release_host(bus->sdiodev->func[1]); + return false; +} + +static int +brcmf_sdio_watchdog_thread(void *data) +{ + struct brcmf_sdio *bus = (struct brcmf_sdio *)data; + + allow_signal(SIGTERM); + /* Run until signal received */ + while (1) { + if (kthread_should_stop()) + break; + if (!wait_for_completion_interruptible(&bus->watchdog_wait)) { + brcmf_sdio_bus_watchdog(bus); + /* Count the tick for reference */ + bus->sdcnt.tickcnt++; + reinit_completion(&bus->watchdog_wait); + } else + break; + } + return 0; +} + +static void +brcmf_sdio_watchdog(unsigned long data) +{ + struct brcmf_sdio *bus = (struct brcmf_sdio *)data; + + if (bus->watchdog_tsk) { + complete(&bus->watchdog_wait); + /* Reschedule the watchdog */ + if (bus->wd_timer_valid) + mod_timer(&bus->timer, + jiffies + BRCMF_WD_POLL_MS * HZ / 1000); + } +} + +static struct brcmf_bus_ops brcmf_sdio_bus_ops = { + .stop = brcmf_sdio_bus_stop, + .preinit = brcmf_sdio_bus_preinit, + .txdata = brcmf_sdio_bus_txdata, + .txctl = brcmf_sdio_bus_txctl, + .rxctl = brcmf_sdio_bus_rxctl, + .gettxq = brcmf_sdio_bus_gettxq, +}; + +static void brcmf_sdio_firmware_callback(struct device *dev, + const struct firmware *code, + void *nvram, u32 nvram_len) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; + struct brcmf_sdio *bus = sdiodev->bus; + int err = 0; + u8 saveclk; + + brcmf_dbg(TRACE, "Enter: dev=%s\n", dev_name(dev)); + + /* try to download image and nvram to the dongle */ + if (bus_if->state == BRCMF_BUS_DOWN) { + bus->alp_only = true; + err = brcmf_sdio_download_firmware(bus, code, nvram, nvram_len); + if (err) + goto fail; + bus->alp_only = false; + } + + if (!bus_if->drvr) + return; + + /* Start the watchdog timer */ + bus->sdcnt.tickcnt = 0; + brcmf_sdio_wd_timer(bus, BRCMF_WD_POLL_MS); + + sdio_claim_host(sdiodev->func[1]); + + /* Make sure backplane clock is on, needed to generate F2 interrupt */ + brcmf_sdio_clkctl(bus, CLK_AVAIL, false); + if (bus->clkstate != CLK_AVAIL) + goto release; + + /* Force clocks on backplane to be sure F2 interrupt propagates */ + saveclk = brcmf_sdiod_regrb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, &err); + if (!err) { + brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, + (saveclk | SBSDIO_FORCE_HT), &err); + } + if (err) { + brcmf_err("Failed to force clock for F2: err %d\n", err); + goto release; + } + + /* Enable function 2 (frame transfers) */ + w_sdreg32(bus, SDPCM_PROT_VERSION << SMB_DATA_VERSION_SHIFT, + offsetof(struct sdpcmd_regs, tosbmailboxdata)); + err = sdio_enable_func(sdiodev->func[SDIO_FUNC_2]); + + + brcmf_dbg(INFO, "enable F2: err=%d\n", err); + + /* If F2 successfully enabled, set core and enable interrupts */ + if (!err) { + /* Set up the interrupt mask and enable interrupts */ + bus->hostintmask = HOSTINTMASK; + w_sdreg32(bus, bus->hostintmask, + offsetof(struct sdpcmd_regs, hostintmask)); + + brcmf_sdiod_regwb(sdiodev, SBSDIO_WATERMARK, 8, &err); + } else { + /* Disable F2 again */ + sdio_disable_func(sdiodev->func[SDIO_FUNC_2]); + goto release; + } + + if (brcmf_chip_sr_capable(bus->ci)) { + brcmf_sdio_sr_init(bus); + } else { + /* Restore previous clock setting */ + brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, + saveclk, &err); + } + + if (err == 0) { + err = brcmf_sdiod_intr_register(sdiodev); + if (err != 0) + brcmf_err("intr register failed:%d\n", err); + } + + /* If we didn't come up, turn off backplane clock */ + if (err != 0) + brcmf_sdio_clkctl(bus, CLK_NONE, false); + + sdio_release_host(sdiodev->func[1]); + + err = brcmf_bus_start(dev); + if (err != 0) { + brcmf_err("dongle is not responding\n"); + goto fail; + } + return; + +release: + sdio_release_host(sdiodev->func[1]); +fail: + brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), err); + device_release_driver(dev); +} + +struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev) +{ + int ret; + struct brcmf_sdio *bus; + + brcmf_dbg(TRACE, "Enter\n"); + + /* Allocate private bus interface state */ + bus = kzalloc(sizeof(struct brcmf_sdio), GFP_ATOMIC); + if (!bus) + goto fail; + + bus->sdiodev = sdiodev; + sdiodev->bus = bus; + skb_queue_head_init(&bus->glom); + bus->txbound = BRCMF_TXBOUND; + bus->rxbound = BRCMF_RXBOUND; + bus->txminmax = BRCMF_TXMINMAX; + bus->tx_seq = SDPCM_SEQ_WRAP - 1; + + /* platform specific configuration: + * alignments must be at least 4 bytes for ADMA + */ + bus->head_align = ALIGNMENT; + bus->sgentry_align = ALIGNMENT; + if (sdiodev->pdata) { + if (sdiodev->pdata->sd_head_align > ALIGNMENT) + bus->head_align = sdiodev->pdata->sd_head_align; + if (sdiodev->pdata->sd_sgentry_align > ALIGNMENT) + bus->sgentry_align = sdiodev->pdata->sd_sgentry_align; + } + + INIT_WORK(&bus->datawork, brcmf_sdio_dataworker); + bus->brcmf_wq = create_singlethread_workqueue("brcmf_wq"); + if (bus->brcmf_wq == NULL) { + brcmf_err("insufficient memory to create txworkqueue\n"); + goto fail; + } + + /* attempt to attach to the dongle */ + if (!(brcmf_sdio_probe_attach(bus))) { + brcmf_err("brcmf_sdio_probe_attach failed\n"); + goto fail; + } + + spin_lock_init(&bus->rxctl_lock); + spin_lock_init(&bus->txq_lock); + sema_init(&bus->tx_seq_lock, 1); + init_waitqueue_head(&bus->ctrl_wait); + init_waitqueue_head(&bus->dcmd_resp_wait); + + /* Set up the watchdog timer */ + init_timer(&bus->timer); + bus->timer.data = (unsigned long)bus; + bus->timer.function = brcmf_sdio_watchdog; + + /* Initialize watchdog thread */ + init_completion(&bus->watchdog_wait); + bus->watchdog_tsk = kthread_run(brcmf_sdio_watchdog_thread, + bus, "brcmf_watchdog"); + if (IS_ERR(bus->watchdog_tsk)) { + pr_warn("brcmf_watchdog thread failed to start\n"); + bus->watchdog_tsk = NULL; + } + /* Initialize DPC thread */ + atomic_set(&bus->dpc_tskcnt, 0); + + /* Assign bus interface call back */ + bus->sdiodev->bus_if->dev = bus->sdiodev->dev; + bus->sdiodev->bus_if->ops = &brcmf_sdio_bus_ops; + bus->sdiodev->bus_if->chip = bus->ci->chip; + bus->sdiodev->bus_if->chiprev = bus->ci->chiprev; + + /* default sdio bus header length for tx packet */ + bus->tx_hdrlen = SDPCM_HWHDR_LEN + SDPCM_SWHDR_LEN; + + /* Attach to the common layer, reserve hdr space */ + ret = brcmf_attach(bus->sdiodev->dev); + if (ret != 0) { + brcmf_err("brcmf_attach failed\n"); + goto fail; + } + + /* Query the F2 block size, set roundup accordingly */ + bus->blocksize = bus->sdiodev->func[2]->cur_blksize; + bus->roundup = min(max_roundup, bus->blocksize); + + /* Allocate buffers */ + if (bus->sdiodev->bus_if->maxctl) { + bus->sdiodev->bus_if->maxctl += bus->roundup; + bus->rxblen = + roundup((bus->sdiodev->bus_if->maxctl + SDPCM_HDRLEN), + ALIGNMENT) + bus->head_align; + bus->rxbuf = kmalloc(bus->rxblen, GFP_ATOMIC); + if (!(bus->rxbuf)) { + brcmf_err("rxbuf allocation failed\n"); + goto fail; + } + } + + sdio_claim_host(bus->sdiodev->func[1]); + + /* Disable F2 to clear any intermediate frame state on the dongle */ + sdio_disable_func(bus->sdiodev->func[SDIO_FUNC_2]); + + bus->rxflow = false; + + /* Done with backplane-dependent accesses, can drop clock... */ + brcmf_sdiod_regwb(bus->sdiodev, SBSDIO_FUNC1_CHIPCLKCSR, 0, NULL); + + sdio_release_host(bus->sdiodev->func[1]); + + /* ...and initialize clock/power states */ + bus->clkstate = CLK_SDONLY; + bus->idletime = BRCMF_IDLE_INTERVAL; + bus->idleclock = BRCMF_IDLE_ACTIVE; + + /* SR state */ + bus->sleeping = false; + bus->sr_enabled = false; + + brcmf_sdio_debugfs_create(bus); + brcmf_dbg(INFO, "completed!!\n"); + + ret = brcmf_fw_get_firmwares(sdiodev->dev, BRCMF_FW_REQUEST_NVRAM, + brcmf_sdio_get_fwname(bus->ci, + BRCMF_FIRMWARE_BIN), + brcmf_sdio_get_fwname(bus->ci, + BRCMF_FIRMWARE_NVRAM), + brcmf_sdio_firmware_callback); + if (ret != 0) { + brcmf_err("async firmware request failed: %d\n", ret); + goto fail; + } + + return bus; + +fail: + brcmf_sdio_remove(bus); + return NULL; +} + +/* Detach and free everything */ +void brcmf_sdio_remove(struct brcmf_sdio *bus) +{ + brcmf_dbg(TRACE, "Enter\n"); + + if (bus) { + /* De-register interrupt handler */ + brcmf_sdiod_intr_unregister(bus->sdiodev); + + brcmf_detach(bus->sdiodev->dev); + + cancel_work_sync(&bus->datawork); + if (bus->brcmf_wq) + destroy_workqueue(bus->brcmf_wq); + + if (bus->ci) { + if (bus->sdiodev->bus_if->state == BRCMF_BUS_DOWN) { + sdio_claim_host(bus->sdiodev->func[1]); + brcmf_sdio_clkctl(bus, CLK_AVAIL, false); + /* Leave the device in state where it is + * 'quiet'. This is done by putting it in + * download_state which essentially resets + * all necessary cores. + */ + msleep(20); + brcmf_chip_enter_download(bus->ci); + brcmf_sdio_clkctl(bus, CLK_NONE, false); + sdio_release_host(bus->sdiodev->func[1]); + } + brcmf_chip_detach(bus->ci); + } + + kfree(bus->rxbuf); + kfree(bus->hdrbuf); + kfree(bus); + } + + brcmf_dbg(TRACE, "Disconnected\n"); +} + +void brcmf_sdio_wd_timer(struct brcmf_sdio *bus, uint wdtick) +{ + /* Totally stop the timer */ + if (!wdtick && bus->wd_timer_valid) { + del_timer_sync(&bus->timer); + bus->wd_timer_valid = false; + bus->save_ms = wdtick; + return; + } + + /* don't start the wd until fw is loaded */ + if (bus->sdiodev->bus_if->state != BRCMF_BUS_DATA) + return; + + if (wdtick) { + if (bus->save_ms != BRCMF_WD_POLL_MS) { + if (bus->wd_timer_valid) + /* Stop timer and restart at new value */ + del_timer_sync(&bus->timer); + + /* Create timer again when watchdog period is + dynamically changed or in the first instance + */ + bus->timer.expires = + jiffies + BRCMF_WD_POLL_MS * HZ / 1000; + add_timer(&bus->timer); + + } else { + /* Re arm the timer, at last watchdog period */ + mod_timer(&bus->timer, + jiffies + BRCMF_WD_POLL_MS * HZ / 1000); + } + + bus->wd_timer_valid = true; + bus->save_ms = wdtick; + } +} diff --git a/drivers/net/wireless/brcm80211/brcmfmac/firmware.c b/drivers/net/wireless/brcm80211/brcmfmac/firmware.c new file mode 100644 index 00000000000..7b7d237c1dd --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/firmware.c @@ -0,0 +1,332 @@ +/* + * Copyright (c) 2013 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/device.h> +#include <linux/firmware.h> + +#include "dhd_dbg.h" +#include "firmware.h" + +enum nvram_parser_state { + IDLE, + KEY, + VALUE, + COMMENT, + END +}; + +/** + * struct nvram_parser - internal info for parser. + * + * @state: current parser state. + * @fwnv: input buffer being parsed. + * @nvram: output buffer with parse result. + * @nvram_len: lenght of parse result. + * @line: current line. + * @column: current column in line. + * @pos: byte offset in input buffer. + * @entry: start position of key,value entry. + */ +struct nvram_parser { + enum nvram_parser_state state; + const struct firmware *fwnv; + u8 *nvram; + u32 nvram_len; + u32 line; + u32 column; + u32 pos; + u32 entry; +}; + +static bool is_nvram_char(char c) +{ + /* comment marker excluded */ + if (c == '#') + return false; + + /* key and value may have any other readable character */ + return (c > 0x20 && c < 0x7f); +} + +static bool is_whitespace(char c) +{ + return (c == ' ' || c == '\r' || c == '\n' || c == '\t'); +} + +static enum nvram_parser_state brcmf_nvram_handle_idle(struct nvram_parser *nvp) +{ + char c; + + c = nvp->fwnv->data[nvp->pos]; + if (c == '\n') + return COMMENT; + if (is_whitespace(c)) + goto proceed; + if (c == '#') + return COMMENT; + if (is_nvram_char(c)) { + nvp->entry = nvp->pos; + return KEY; + } + brcmf_dbg(INFO, "warning: ln=%d:col=%d: ignoring invalid character\n", + nvp->line, nvp->column); +proceed: + nvp->column++; + nvp->pos++; + return IDLE; +} + +static enum nvram_parser_state brcmf_nvram_handle_key(struct nvram_parser *nvp) +{ + enum nvram_parser_state st = nvp->state; + char c; + + c = nvp->fwnv->data[nvp->pos]; + if (c == '=') { + st = VALUE; + } else if (!is_nvram_char(c)) { + brcmf_dbg(INFO, "warning: ln=%d:col=%d: '=' expected, skip invalid key entry\n", + nvp->line, nvp->column); + return COMMENT; + } + + nvp->column++; + nvp->pos++; + return st; +} + +static enum nvram_parser_state +brcmf_nvram_handle_value(struct nvram_parser *nvp) +{ + char c; + char *skv; + char *ekv; + u32 cplen; + + c = nvp->fwnv->data[nvp->pos]; + if (!is_nvram_char(c)) { + /* key,value pair complete */ + ekv = (u8 *)&nvp->fwnv->data[nvp->pos]; + skv = (u8 *)&nvp->fwnv->data[nvp->entry]; + cplen = ekv - skv; + /* copy to output buffer */ + memcpy(&nvp->nvram[nvp->nvram_len], skv, cplen); + nvp->nvram_len += cplen; + nvp->nvram[nvp->nvram_len] = '\0'; + nvp->nvram_len++; + return IDLE; + } + nvp->pos++; + nvp->column++; + return VALUE; +} + +static enum nvram_parser_state +brcmf_nvram_handle_comment(struct nvram_parser *nvp) +{ + char *eol, *sol; + + sol = (char *)&nvp->fwnv->data[nvp->pos]; + eol = strchr(sol, '\n'); + if (eol == NULL) + return END; + + /* eat all moving to next line */ + nvp->line++; + nvp->column = 1; + nvp->pos += (eol - sol) + 1; + return IDLE; +} + +static enum nvram_parser_state brcmf_nvram_handle_end(struct nvram_parser *nvp) +{ + /* final state */ + return END; +} + +static enum nvram_parser_state +(*nv_parser_states[])(struct nvram_parser *nvp) = { + brcmf_nvram_handle_idle, + brcmf_nvram_handle_key, + brcmf_nvram_handle_value, + brcmf_nvram_handle_comment, + brcmf_nvram_handle_end +}; + +static int brcmf_init_nvram_parser(struct nvram_parser *nvp, + const struct firmware *nv) +{ + memset(nvp, 0, sizeof(*nvp)); + nvp->fwnv = nv; + /* Alloc for extra 0 byte + roundup by 4 + length field */ + nvp->nvram = kzalloc(nv->size + 1 + 3 + sizeof(u32), GFP_KERNEL); + if (!nvp->nvram) + return -ENOMEM; + + nvp->line = 1; + nvp->column = 1; + return 0; +} + +/* brcmf_nvram_strip :Takes a buffer of "<var>=<value>\n" lines read from a fil + * and ending in a NUL. Removes carriage returns, empty lines, comment lines, + * and converts newlines to NULs. Shortens buffer as needed and pads with NULs. + * End of buffer is completed with token identifying length of buffer. + */ +static void *brcmf_fw_nvram_strip(const struct firmware *nv, u32 *new_length) +{ + struct nvram_parser nvp; + u32 pad; + u32 token; + __le32 token_le; + + if (brcmf_init_nvram_parser(&nvp, nv) < 0) + return NULL; + + while (nvp.pos < nv->size) { + nvp.state = nv_parser_states[nvp.state](&nvp); + if (nvp.state == END) + break; + } + pad = nvp.nvram_len; + *new_length = roundup(nvp.nvram_len + 1, 4); + while (pad != *new_length) { + nvp.nvram[pad] = 0; + pad++; + } + + token = *new_length / 4; + token = (~token << 16) | (token & 0x0000FFFF); + token_le = cpu_to_le32(token); + + memcpy(&nvp.nvram[*new_length], &token_le, sizeof(token_le)); + *new_length += sizeof(token_le); + + return nvp.nvram; +} + +void brcmf_fw_nvram_free(void *nvram) +{ + kfree(nvram); +} + +struct brcmf_fw { + struct device *dev; + u16 flags; + const struct firmware *code; + const char *nvram_name; + void (*done)(struct device *dev, const struct firmware *fw, + void *nvram_image, u32 nvram_len); +}; + +static void brcmf_fw_request_nvram_done(const struct firmware *fw, void *ctx) +{ + struct brcmf_fw *fwctx = ctx; + u32 nvram_length = 0; + void *nvram = NULL; + + brcmf_dbg(TRACE, "enter: dev=%s\n", dev_name(fwctx->dev)); + if (!fw && !(fwctx->flags & BRCMF_FW_REQ_NV_OPTIONAL)) + goto fail; + + if (fw) { + nvram = brcmf_fw_nvram_strip(fw, &nvram_length); + release_firmware(fw); + if (!nvram && !(fwctx->flags & BRCMF_FW_REQ_NV_OPTIONAL)) + goto fail; + } + + fwctx->done(fwctx->dev, fwctx->code, nvram, nvram_length); + kfree(fwctx); + return; + +fail: + brcmf_dbg(TRACE, "failed: dev=%s\n", dev_name(fwctx->dev)); + if (fwctx->code) + release_firmware(fwctx->code); + device_release_driver(fwctx->dev); + kfree(fwctx); +} + +static void brcmf_fw_request_code_done(const struct firmware *fw, void *ctx) +{ + struct brcmf_fw *fwctx = ctx; + int ret; + + brcmf_dbg(TRACE, "enter: dev=%s\n", dev_name(fwctx->dev)); + if (!fw) + goto fail; + + /* only requested code so done here */ + if (!(fwctx->flags & BRCMF_FW_REQUEST_NVRAM)) { + fwctx->done(fwctx->dev, fw, NULL, 0); + kfree(fwctx); + return; + } + fwctx->code = fw; + ret = request_firmware_nowait(THIS_MODULE, true, fwctx->nvram_name, + fwctx->dev, GFP_KERNEL, fwctx, + brcmf_fw_request_nvram_done); + + if (!ret) + return; + + /* when nvram is optional call .done() callback here */ + if (fwctx->flags & BRCMF_FW_REQ_NV_OPTIONAL) { + fwctx->done(fwctx->dev, fw, NULL, 0); + kfree(fwctx); + return; + } + + /* failed nvram request */ + release_firmware(fw); +fail: + brcmf_dbg(TRACE, "failed: dev=%s\n", dev_name(fwctx->dev)); + device_release_driver(fwctx->dev); + kfree(fwctx); +} + +int brcmf_fw_get_firmwares(struct device *dev, u16 flags, + const char *code, const char *nvram, + void (*fw_cb)(struct device *dev, + const struct firmware *fw, + void *nvram_image, u32 nvram_len)) +{ + struct brcmf_fw *fwctx; + + brcmf_dbg(TRACE, "enter: dev=%s\n", dev_name(dev)); + if (!fw_cb || !code) + return -EINVAL; + + if ((flags & BRCMF_FW_REQUEST_NVRAM) && !nvram) + return -EINVAL; + + fwctx = kzalloc(sizeof(*fwctx), GFP_KERNEL); + if (!fwctx) + return -ENOMEM; + + fwctx->dev = dev; + fwctx->flags = flags; + fwctx->done = fw_cb; + if (flags & BRCMF_FW_REQUEST_NVRAM) + fwctx->nvram_name = nvram; + + return request_firmware_nowait(THIS_MODULE, true, code, dev, + GFP_KERNEL, fwctx, + brcmf_fw_request_code_done); +} diff --git a/drivers/net/wireless/brcm80211/brcmfmac/firmware.h b/drivers/net/wireless/brcm80211/brcmfmac/firmware.h new file mode 100644 index 00000000000..6431bfd7aff --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/firmware.h @@ -0,0 +1,36 @@ +/* + * Copyright (c) 2013 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#ifndef BRCMFMAC_FIRMWARE_H +#define BRCMFMAC_FIRMWARE_H + +#define BRCMF_FW_REQUEST 0x000F +#define BRCMF_FW_REQUEST_NVRAM 0x0001 +#define BRCMF_FW_REQ_FLAGS 0x00F0 +#define BRCMF_FW_REQ_NV_OPTIONAL 0x0010 + +void brcmf_fw_nvram_free(void *nvram); +/* + * Request firmware(s) asynchronously. When the asynchronous request + * fails it will not use the callback, but call device_release_driver() + * instead which will call the driver .remove() callback. + */ +int brcmf_fw_get_firmwares(struct device *dev, u16 flags, + const char *code, const char *nvram, + void (*fw_cb)(struct device *dev, + const struct firmware *fw, + void *nvram_image, u32 nvram_len)); + +#endif /* BRCMFMAC_FIRMWARE_H */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fweh.c b/drivers/net/wireless/brcm80211/brcmfmac/fweh.c new file mode 100644 index 00000000000..fad77dd2a3a --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/fweh.c @@ -0,0 +1,456 @@ +/* + * Copyright (c) 2012 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#include <linux/netdevice.h> + +#include "brcmu_wifi.h" +#include "brcmu_utils.h" + +#include "dhd.h" +#include "dhd_dbg.h" +#include "tracepoint.h" +#include "fwsignal.h" +#include "fweh.h" +#include "fwil.h" + +/** + * struct brcm_ethhdr - broadcom specific ether header. + * + * @subtype: subtype for this packet. + * @length: TODO: length of appended data. + * @version: version indication. + * @oui: OUI of this packet. + * @usr_subtype: subtype for this OUI. + */ +struct brcm_ethhdr { + __be16 subtype; + __be16 length; + u8 version; + u8 oui[3]; + __be16 usr_subtype; +} __packed; + +struct brcmf_event_msg_be { + __be16 version; + __be16 flags; + __be32 event_type; + __be32 status; + __be32 reason; + __be32 auth_type; + __be32 datalen; + u8 addr[ETH_ALEN]; + char ifname[IFNAMSIZ]; + u8 ifidx; + u8 bsscfgidx; +} __packed; + +/** + * struct brcmf_event - contents of broadcom event packet. + * + * @eth: standard ether header. + * @hdr: broadcom specific ether header. + * @msg: common part of the actual event message. + */ +struct brcmf_event { + struct ethhdr eth; + struct brcm_ethhdr hdr; + struct brcmf_event_msg_be msg; +} __packed; + +/** + * struct brcmf_fweh_queue_item - event item on event queue. + * + * @q: list element for queuing. + * @code: event code. + * @ifidx: interface index related to this event. + * @ifaddr: ethernet address for interface. + * @emsg: common parameters of the firmware event message. + * @data: event specific data part of the firmware event. + */ +struct brcmf_fweh_queue_item { + struct list_head q; + enum brcmf_fweh_event_code code; + u8 ifidx; + u8 ifaddr[ETH_ALEN]; + struct brcmf_event_msg_be emsg; + u8 data[0]; +}; + +/** + * struct brcmf_fweh_event_name - code, name mapping entry. + */ +struct brcmf_fweh_event_name { + enum brcmf_fweh_event_code code; + const char *name; +}; + +#ifdef DEBUG +#define BRCMF_ENUM_DEF(id, val) \ + { val, #id }, + +/* array for mapping code to event name */ +static struct brcmf_fweh_event_name fweh_event_names[] = { + BRCMF_FWEH_EVENT_ENUM_DEFLIST +}; +#undef BRCMF_ENUM_DEF + +/** + * brcmf_fweh_event_name() - returns name for given event code. + * + * @code: code to lookup. + */ +static const char *brcmf_fweh_event_name(enum brcmf_fweh_event_code code) +{ + int i; + for (i = 0; i < ARRAY_SIZE(fweh_event_names); i++) { + if (fweh_event_names[i].code == code) + return fweh_event_names[i].name; + } + return "unknown"; +} +#else +static const char *brcmf_fweh_event_name(enum brcmf_fweh_event_code code) +{ + return "nodebug"; +} +#endif + +/** + * brcmf_fweh_queue_event() - create and queue event. + * + * @fweh: firmware event handling info. + * @event: event queue entry. + */ +static void brcmf_fweh_queue_event(struct brcmf_fweh_info *fweh, + struct brcmf_fweh_queue_item *event) +{ + ulong flags; + + spin_lock_irqsave(&fweh->evt_q_lock, flags); + list_add_tail(&event->q, &fweh->event_q); + spin_unlock_irqrestore(&fweh->evt_q_lock, flags); + schedule_work(&fweh->event_work); +} + +static int brcmf_fweh_call_event_handler(struct brcmf_if *ifp, + enum brcmf_fweh_event_code code, + struct brcmf_event_msg *emsg, + void *data) +{ + struct brcmf_fweh_info *fweh; + int err = -EINVAL; + + if (ifp) { + fweh = &ifp->drvr->fweh; + + /* handle the event if valid interface and handler */ + if (fweh->evt_handler[code]) + err = fweh->evt_handler[code](ifp, emsg, data); + else + brcmf_err("unhandled event %d ignored\n", code); + } else { + brcmf_err("no interface object\n"); + } + return err; +} + +/** + * brcmf_fweh_handle_if_event() - handle IF event. + * + * @drvr: driver information object. + * @item: queue entry. + * @ifpp: interface object (may change upon ADD action). + */ +static void brcmf_fweh_handle_if_event(struct brcmf_pub *drvr, + struct brcmf_event_msg *emsg, + void *data) +{ + struct brcmf_if_event *ifevent = data; + struct brcmf_if *ifp; + int err = 0; + + brcmf_dbg(EVENT, "action: %u idx: %u bsscfg: %u flags: %u role: %u\n", + ifevent->action, ifevent->ifidx, ifevent->bssidx, + ifevent->flags, ifevent->role); + + if (ifevent->flags & BRCMF_E_IF_FLAG_NOIF) { + brcmf_dbg(EVENT, "event can be ignored\n"); + return; + } + if (ifevent->ifidx >= BRCMF_MAX_IFS) { + brcmf_err("invalid interface index: %u\n", + ifevent->ifidx); + return; + } + + ifp = drvr->iflist[ifevent->bssidx]; + + if (ifevent->action == BRCMF_E_IF_ADD) { + brcmf_dbg(EVENT, "adding %s (%pM)\n", emsg->ifname, + emsg->addr); + ifp = brcmf_add_if(drvr, ifevent->bssidx, ifevent->ifidx, + emsg->ifname, emsg->addr); + if (IS_ERR(ifp)) + return; + brcmf_fws_add_interface(ifp); + if (!drvr->fweh.evt_handler[BRCMF_E_IF]) + if (brcmf_net_attach(ifp, false) < 0) + return; + } + + if (ifevent->action == BRCMF_E_IF_CHANGE) + brcmf_fws_reset_interface(ifp); + + err = brcmf_fweh_call_event_handler(ifp, emsg->event_code, emsg, data); + + if (ifevent->action == BRCMF_E_IF_DEL) { + brcmf_fws_del_interface(ifp); + brcmf_del_if(drvr, ifevent->bssidx); + } +} + +/** + * brcmf_fweh_dequeue_event() - get event from the queue. + * + * @fweh: firmware event handling info. + */ +static struct brcmf_fweh_queue_item * +brcmf_fweh_dequeue_event(struct brcmf_fweh_info *fweh) +{ + struct brcmf_fweh_queue_item *event = NULL; + ulong flags; + + spin_lock_irqsave(&fweh->evt_q_lock, flags); + if (!list_empty(&fweh->event_q)) { + event = list_first_entry(&fweh->event_q, + struct brcmf_fweh_queue_item, q); + list_del(&event->q); + } + spin_unlock_irqrestore(&fweh->evt_q_lock, flags); + + return event; +} + +/** + * brcmf_fweh_event_worker() - firmware event worker. + * + * @work: worker object. + */ +static void brcmf_fweh_event_worker(struct work_struct *work) +{ + struct brcmf_pub *drvr; + struct brcmf_if *ifp; + struct brcmf_fweh_info *fweh; + struct brcmf_fweh_queue_item *event; + int err = 0; + struct brcmf_event_msg_be *emsg_be; + struct brcmf_event_msg emsg; + + fweh = container_of(work, struct brcmf_fweh_info, event_work); + drvr = container_of(fweh, struct brcmf_pub, fweh); + + while ((event = brcmf_fweh_dequeue_event(fweh))) { + brcmf_dbg(EVENT, "event %s (%u) ifidx %u bsscfg %u addr %pM\n", + brcmf_fweh_event_name(event->code), event->code, + event->emsg.ifidx, event->emsg.bsscfgidx, + event->emsg.addr); + + /* convert event message */ + emsg_be = &event->emsg; + emsg.version = be16_to_cpu(emsg_be->version); + emsg.flags = be16_to_cpu(emsg_be->flags); + emsg.event_code = event->code; + emsg.status = be32_to_cpu(emsg_be->status); + emsg.reason = be32_to_cpu(emsg_be->reason); + emsg.auth_type = be32_to_cpu(emsg_be->auth_type); + emsg.datalen = be32_to_cpu(emsg_be->datalen); + memcpy(emsg.addr, emsg_be->addr, ETH_ALEN); + memcpy(emsg.ifname, emsg_be->ifname, sizeof(emsg.ifname)); + emsg.ifidx = emsg_be->ifidx; + emsg.bsscfgidx = emsg_be->bsscfgidx; + + brcmf_dbg(EVENT, " version %u flags %u status %u reason %u\n", + emsg.version, emsg.flags, emsg.status, emsg.reason); + brcmf_dbg_hex_dump(BRCMF_EVENT_ON(), event->data, + min_t(u32, emsg.datalen, 64), + "event payload, len=%d\n", emsg.datalen); + + /* special handling of interface event */ + if (event->code == BRCMF_E_IF) { + brcmf_fweh_handle_if_event(drvr, &emsg, event->data); + goto event_free; + } + + ifp = drvr->iflist[emsg.bsscfgidx]; + err = brcmf_fweh_call_event_handler(ifp, event->code, &emsg, + event->data); + if (err) { + brcmf_err("event handler failed (%d)\n", + event->code); + err = 0; + } +event_free: + kfree(event); + } +} + +/** + * brcmf_fweh_attach() - initialize firmware event handling. + * + * @drvr: driver information object. + */ +void brcmf_fweh_attach(struct brcmf_pub *drvr) +{ + struct brcmf_fweh_info *fweh = &drvr->fweh; + INIT_WORK(&fweh->event_work, brcmf_fweh_event_worker); + spin_lock_init(&fweh->evt_q_lock); + INIT_LIST_HEAD(&fweh->event_q); +} + +/** + * brcmf_fweh_detach() - cleanup firmware event handling. + * + * @drvr: driver information object. + */ +void brcmf_fweh_detach(struct brcmf_pub *drvr) +{ + struct brcmf_fweh_info *fweh = &drvr->fweh; + struct brcmf_if *ifp = drvr->iflist[0]; + s8 eventmask[BRCMF_EVENTING_MASK_LEN]; + + if (ifp) { + /* clear all events */ + memset(eventmask, 0, BRCMF_EVENTING_MASK_LEN); + (void)brcmf_fil_iovar_data_set(ifp, "event_msgs", + eventmask, + BRCMF_EVENTING_MASK_LEN); + } + /* cancel the worker */ + cancel_work_sync(&fweh->event_work); + WARN_ON(!list_empty(&fweh->event_q)); + memset(fweh->evt_handler, 0, sizeof(fweh->evt_handler)); +} + +/** + * brcmf_fweh_register() - register handler for given event code. + * + * @drvr: driver information object. + * @code: event code. + * @handler: handler for the given event code. + */ +int brcmf_fweh_register(struct brcmf_pub *drvr, enum brcmf_fweh_event_code code, + brcmf_fweh_handler_t handler) +{ + if (drvr->fweh.evt_handler[code]) { + brcmf_err("event code %d already registered\n", code); + return -ENOSPC; + } + drvr->fweh.evt_handler[code] = handler; + brcmf_dbg(TRACE, "event handler registered for %s\n", + brcmf_fweh_event_name(code)); + return 0; +} + +/** + * brcmf_fweh_unregister() - remove handler for given code. + * + * @drvr: driver information object. + * @code: event code. + */ +void brcmf_fweh_unregister(struct brcmf_pub *drvr, + enum brcmf_fweh_event_code code) +{ + brcmf_dbg(TRACE, "event handler cleared for %s\n", + brcmf_fweh_event_name(code)); + drvr->fweh.evt_handler[code] = NULL; +} + +/** + * brcmf_fweh_activate_events() - enables firmware events registered. + * + * @ifp: primary interface object. + */ +int brcmf_fweh_activate_events(struct brcmf_if *ifp) +{ + int i, err; + s8 eventmask[BRCMF_EVENTING_MASK_LEN]; + + for (i = 0; i < BRCMF_E_LAST; i++) { + if (ifp->drvr->fweh.evt_handler[i]) { + brcmf_dbg(EVENT, "enable event %s\n", + brcmf_fweh_event_name(i)); + setbit(eventmask, i); + } + } + + /* want to handle IF event as well */ + brcmf_dbg(EVENT, "enable event IF\n"); + setbit(eventmask, BRCMF_E_IF); + + err = brcmf_fil_iovar_data_set(ifp, "event_msgs", + eventmask, BRCMF_EVENTING_MASK_LEN); + if (err) + brcmf_err("Set event_msgs error (%d)\n", err); + + return err; +} + +/** + * brcmf_fweh_process_event() - process skb as firmware event. + * + * @drvr: driver information object. + * @event_packet: event packet to process. + * + * If the packet buffer contains a firmware event message it will + * dispatch the event to a registered handler (using worker). + */ +void brcmf_fweh_process_event(struct brcmf_pub *drvr, + struct brcmf_event *event_packet) +{ + enum brcmf_fweh_event_code code; + struct brcmf_fweh_info *fweh = &drvr->fweh; + struct brcmf_fweh_queue_item *event; + gfp_t alloc_flag = GFP_KERNEL; + void *data; + u32 datalen; + + /* get event info */ + code = get_unaligned_be32(&event_packet->msg.event_type); + datalen = get_unaligned_be32(&event_packet->msg.datalen); + data = &event_packet[1]; + + if (code >= BRCMF_E_LAST) + return; + + if (code != BRCMF_E_IF && !fweh->evt_handler[code]) + return; + + if (in_interrupt()) + alloc_flag = GFP_ATOMIC; + + event = kzalloc(sizeof(*event) + datalen, alloc_flag); + if (!event) + return; + + event->code = code; + event->ifidx = event_packet->msg.ifidx; + + /* use memcpy to get aligned event message */ + memcpy(&event->emsg, &event_packet->msg, sizeof(event->emsg)); + memcpy(event->data, data, datalen); + memcpy(event->ifaddr, event_packet->eth.h_dest, ETH_ALEN); + + brcmf_fweh_queue_event(fweh, event); +} diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fweh.h b/drivers/net/wireless/brcm80211/brcmfmac/fweh.h new file mode 100644 index 00000000000..51b53a73d07 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/fweh.h @@ -0,0 +1,277 @@ +/* + * Copyright (c) 2012 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + + +#ifndef FWEH_H_ +#define FWEH_H_ + +#include <asm/unaligned.h> +#include <linux/skbuff.h> +#include <linux/if_ether.h> +#include <linux/if.h> + +/* formward declarations */ +struct brcmf_pub; +struct brcmf_if; +struct brcmf_cfg80211_info; +struct brcmf_event; + +/* list of firmware events */ +#define BRCMF_FWEH_EVENT_ENUM_DEFLIST \ + BRCMF_ENUM_DEF(SET_SSID, 0) \ + BRCMF_ENUM_DEF(JOIN, 1) \ + BRCMF_ENUM_DEF(START, 2) \ + BRCMF_ENUM_DEF(AUTH, 3) \ + BRCMF_ENUM_DEF(AUTH_IND, 4) \ + BRCMF_ENUM_DEF(DEAUTH, 5) \ + BRCMF_ENUM_DEF(DEAUTH_IND, 6) \ + BRCMF_ENUM_DEF(ASSOC, 7) \ + BRCMF_ENUM_DEF(ASSOC_IND, 8) \ + BRCMF_ENUM_DEF(REASSOC, 9) \ + BRCMF_ENUM_DEF(REASSOC_IND, 10) \ + BRCMF_ENUM_DEF(DISASSOC, 11) \ + BRCMF_ENUM_DEF(DISASSOC_IND, 12) \ + BRCMF_ENUM_DEF(QUIET_START, 13) \ + BRCMF_ENUM_DEF(QUIET_END, 14) \ + BRCMF_ENUM_DEF(BEACON_RX, 15) \ + BRCMF_ENUM_DEF(LINK, 16) \ + BRCMF_ENUM_DEF(MIC_ERROR, 17) \ + BRCMF_ENUM_DEF(NDIS_LINK, 18) \ + BRCMF_ENUM_DEF(ROAM, 19) \ + BRCMF_ENUM_DEF(TXFAIL, 20) \ + BRCMF_ENUM_DEF(PMKID_CACHE, 21) \ + BRCMF_ENUM_DEF(RETROGRADE_TSF, 22) \ + BRCMF_ENUM_DEF(PRUNE, 23) \ + BRCMF_ENUM_DEF(AUTOAUTH, 24) \ + BRCMF_ENUM_DEF(EAPOL_MSG, 25) \ + BRCMF_ENUM_DEF(SCAN_COMPLETE, 26) \ + BRCMF_ENUM_DEF(ADDTS_IND, 27) \ + BRCMF_ENUM_DEF(DELTS_IND, 28) \ + BRCMF_ENUM_DEF(BCNSENT_IND, 29) \ + BRCMF_ENUM_DEF(BCNRX_MSG, 30) \ + BRCMF_ENUM_DEF(BCNLOST_MSG, 31) \ + BRCMF_ENUM_DEF(ROAM_PREP, 32) \ + BRCMF_ENUM_DEF(PFN_NET_FOUND, 33) \ + BRCMF_ENUM_DEF(PFN_NET_LOST, 34) \ + BRCMF_ENUM_DEF(RESET_COMPLETE, 35) \ + BRCMF_ENUM_DEF(JOIN_START, 36) \ + BRCMF_ENUM_DEF(ROAM_START, 37) \ + BRCMF_ENUM_DEF(ASSOC_START, 38) \ + BRCMF_ENUM_DEF(IBSS_ASSOC, 39) \ + BRCMF_ENUM_DEF(RADIO, 40) \ + BRCMF_ENUM_DEF(PSM_WATCHDOG, 41) \ + BRCMF_ENUM_DEF(PROBREQ_MSG, 44) \ + BRCMF_ENUM_DEF(SCAN_CONFIRM_IND, 45) \ + BRCMF_ENUM_DEF(PSK_SUP, 46) \ + BRCMF_ENUM_DEF(COUNTRY_CODE_CHANGED, 47) \ + BRCMF_ENUM_DEF(EXCEEDED_MEDIUM_TIME, 48) \ + BRCMF_ENUM_DEF(ICV_ERROR, 49) \ + BRCMF_ENUM_DEF(UNICAST_DECODE_ERROR, 50) \ + BRCMF_ENUM_DEF(MULTICAST_DECODE_ERROR, 51) \ + BRCMF_ENUM_DEF(TRACE, 52) \ + BRCMF_ENUM_DEF(IF, 54) \ + BRCMF_ENUM_DEF(P2P_DISC_LISTEN_COMPLETE, 55) \ + BRCMF_ENUM_DEF(RSSI, 56) \ + BRCMF_ENUM_DEF(PFN_SCAN_COMPLETE, 57) \ + BRCMF_ENUM_DEF(EXTLOG_MSG, 58) \ + BRCMF_ENUM_DEF(ACTION_FRAME, 59) \ + BRCMF_ENUM_DEF(ACTION_FRAME_COMPLETE, 60) \ + BRCMF_ENUM_DEF(PRE_ASSOC_IND, 61) \ + BRCMF_ENUM_DEF(PRE_REASSOC_IND, 62) \ + BRCMF_ENUM_DEF(CHANNEL_ADOPTED, 63) \ + BRCMF_ENUM_DEF(AP_STARTED, 64) \ + BRCMF_ENUM_DEF(DFS_AP_STOP, 65) \ + BRCMF_ENUM_DEF(DFS_AP_RESUME, 66) \ + BRCMF_ENUM_DEF(ESCAN_RESULT, 69) \ + BRCMF_ENUM_DEF(ACTION_FRAME_OFF_CHAN_COMPLETE, 70) \ + BRCMF_ENUM_DEF(PROBERESP_MSG, 71) \ + BRCMF_ENUM_DEF(P2P_PROBEREQ_MSG, 72) \ + BRCMF_ENUM_DEF(DCS_REQUEST, 73) \ + BRCMF_ENUM_DEF(FIFO_CREDIT_MAP, 74) \ + BRCMF_ENUM_DEF(ACTION_FRAME_RX, 75) \ + BRCMF_ENUM_DEF(BCMC_CREDIT_SUPPORT, 127) \ + BRCMF_ENUM_DEF(PSTA_PRIMARY_INTF_IND, 128) + +#define BRCMF_ENUM_DEF(id, val) \ + BRCMF_E_##id = (val), + +/* firmware event codes sent by the dongle */ +enum brcmf_fweh_event_code { + BRCMF_FWEH_EVENT_ENUM_DEFLIST + BRCMF_E_LAST +}; +#undef BRCMF_ENUM_DEF + +#define BRCMF_EVENTING_MASK_LEN DIV_ROUND_UP(BRCMF_E_LAST, 8) + +/* flags field values in struct brcmf_event_msg */ +#define BRCMF_EVENT_MSG_LINK 0x01 +#define BRCMF_EVENT_MSG_FLUSHTXQ 0x02 +#define BRCMF_EVENT_MSG_GROUP 0x04 + +/* status field values in struct brcmf_event_msg */ +#define BRCMF_E_STATUS_SUCCESS 0 +#define BRCMF_E_STATUS_FAIL 1 +#define BRCMF_E_STATUS_TIMEOUT 2 +#define BRCMF_E_STATUS_NO_NETWORKS 3 +#define BRCMF_E_STATUS_ABORT 4 +#define BRCMF_E_STATUS_NO_ACK 5 +#define BRCMF_E_STATUS_UNSOLICITED 6 +#define BRCMF_E_STATUS_ATTEMPT 7 +#define BRCMF_E_STATUS_PARTIAL 8 +#define BRCMF_E_STATUS_NEWSCAN 9 +#define BRCMF_E_STATUS_NEWASSOC 10 +#define BRCMF_E_STATUS_11HQUIET 11 +#define BRCMF_E_STATUS_SUPPRESS 12 +#define BRCMF_E_STATUS_NOCHANS 13 +#define BRCMF_E_STATUS_CS_ABORT 15 +#define BRCMF_E_STATUS_ERROR 16 + +/* reason field values in struct brcmf_event_msg */ +#define BRCMF_E_REASON_INITIAL_ASSOC 0 +#define BRCMF_E_REASON_LOW_RSSI 1 +#define BRCMF_E_REASON_DEAUTH 2 +#define BRCMF_E_REASON_DISASSOC 3 +#define BRCMF_E_REASON_BCNS_LOST 4 +#define BRCMF_E_REASON_MINTXRATE 9 +#define BRCMF_E_REASON_TXFAIL 10 + +#define BRCMF_E_REASON_LINK_BSSCFG_DIS 4 +#define BRCMF_E_REASON_FAST_ROAM_FAILED 5 +#define BRCMF_E_REASON_DIRECTED_ROAM 6 +#define BRCMF_E_REASON_TSPEC_REJECTED 7 +#define BRCMF_E_REASON_BETTER_AP 8 + +/* action field values for brcmf_ifevent */ +#define BRCMF_E_IF_ADD 1 +#define BRCMF_E_IF_DEL 2 +#define BRCMF_E_IF_CHANGE 3 + +/* flag field values for brcmf_ifevent */ +#define BRCMF_E_IF_FLAG_NOIF 1 + +/* role field values for brcmf_ifevent */ +#define BRCMF_E_IF_ROLE_STA 0 +#define BRCMF_E_IF_ROLE_AP 1 +#define BRCMF_E_IF_ROLE_WDS 2 + +/** + * definitions for event packet validation. + */ +#define BRCMF_EVENT_OUI_OFFSET 19 +#define BRCM_OUI "\x00\x10\x18" +#define DOT11_OUI_LEN 3 +#define BCMILCP_BCM_SUBTYPE_EVENT 1 + + +/** + * struct brcmf_event_msg - firmware event message. + * + * @version: version information. + * @flags: event flags. + * @event_code: firmware event code. + * @status: status information. + * @reason: reason code. + * @auth_type: authentication type. + * @datalen: lenght of event data buffer. + * @addr: ether address. + * @ifname: interface name. + * @ifidx: interface index. + * @bsscfgidx: bsscfg index. + */ +struct brcmf_event_msg { + u16 version; + u16 flags; + u32 event_code; + u32 status; + u32 reason; + s32 auth_type; + u32 datalen; + u8 addr[ETH_ALEN]; + char ifname[IFNAMSIZ]; + u8 ifidx; + u8 bsscfgidx; +}; + +struct brcmf_if_event { + u8 ifidx; + u8 action; + u8 flags; + u8 bssidx; + u8 role; +}; + +typedef int (*brcmf_fweh_handler_t)(struct brcmf_if *ifp, + const struct brcmf_event_msg *evtmsg, + void *data); + +/** + * struct brcmf_fweh_info - firmware event handling information. + * + * @event_work: event worker. + * @evt_q_lock: lock for event queue protection. + * @event_q: event queue. + * @evt_handler: registered event handlers. + */ +struct brcmf_fweh_info { + struct work_struct event_work; + spinlock_t evt_q_lock; + struct list_head event_q; + int (*evt_handler[BRCMF_E_LAST])(struct brcmf_if *ifp, + const struct brcmf_event_msg *evtmsg, + void *data); +}; + +void brcmf_fweh_attach(struct brcmf_pub *drvr); +void brcmf_fweh_detach(struct brcmf_pub *drvr); +int brcmf_fweh_register(struct brcmf_pub *drvr, enum brcmf_fweh_event_code code, + int (*handler)(struct brcmf_if *ifp, + const struct brcmf_event_msg *evtmsg, + void *data)); +void brcmf_fweh_unregister(struct brcmf_pub *drvr, + enum brcmf_fweh_event_code code); +int brcmf_fweh_activate_events(struct brcmf_if *ifp); +void brcmf_fweh_process_event(struct brcmf_pub *drvr, + struct brcmf_event *event_packet); + +static inline void brcmf_fweh_process_skb(struct brcmf_pub *drvr, + struct sk_buff *skb) +{ + struct brcmf_event *event_packet; + u8 *data; + u16 usr_stype; + + /* only process events when protocol matches */ + if (skb->protocol != cpu_to_be16(ETH_P_LINK_CTL)) + return; + + /* check for BRCM oui match */ + event_packet = (struct brcmf_event *)skb_mac_header(skb); + data = (u8 *)event_packet; + data += BRCMF_EVENT_OUI_OFFSET; + if (memcmp(BRCM_OUI, data, DOT11_OUI_LEN)) + return; + + /* final match on usr_subtype */ + data += DOT11_OUI_LEN; + usr_stype = get_unaligned_be16(data); + if (usr_stype != BCMILCP_BCM_SUBTYPE_EVENT) + return; + + brcmf_fweh_process_event(drvr, event_packet); +} + +#endif /* FWEH_H_ */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwil.c b/drivers/net/wireless/brcm80211/brcmfmac/fwil.c new file mode 100644 index 00000000000..59a5af5bf99 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/fwil.c @@ -0,0 +1,348 @@ +/* + * Copyright (c) 2012 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/* FWIL is the Firmware Interface Layer. In this module the support functions + * are located to set and get variables to and from the firmware. + */ + +#include <linux/kernel.h> +#include <linux/netdevice.h> +#include <brcmu_utils.h> +#include <brcmu_wifi.h> +#include "dhd.h" +#include "dhd_bus.h" +#include "dhd_dbg.h" +#include "tracepoint.h" +#include "fwil.h" +#include "proto.h" + + +#define MAX_HEX_DUMP_LEN 64 + + +static s32 +brcmf_fil_cmd_data(struct brcmf_if *ifp, u32 cmd, void *data, u32 len, bool set) +{ + struct brcmf_pub *drvr = ifp->drvr; + s32 err; + + if (drvr->bus_if->state != BRCMF_BUS_DATA) { + brcmf_err("bus is down. we have nothing to do.\n"); + return -EIO; + } + + if (data != NULL) + len = min_t(uint, len, BRCMF_DCMD_MAXLEN); + if (set) + err = brcmf_proto_set_dcmd(drvr, ifp->ifidx, cmd, data, len); + else + err = brcmf_proto_query_dcmd(drvr, ifp->ifidx, cmd, data, len); + + if (err >= 0) + err = 0; + else + brcmf_err("Failed err=%d\n", err); + + return err; +} + +s32 +brcmf_fil_cmd_data_set(struct brcmf_if *ifp, u32 cmd, void *data, u32 len) +{ + s32 err; + + mutex_lock(&ifp->drvr->proto_block); + + brcmf_dbg(FIL, "cmd=%d, len=%d\n", cmd, len); + brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, + min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); + + err = brcmf_fil_cmd_data(ifp, cmd, data, len, true); + mutex_unlock(&ifp->drvr->proto_block); + + return err; +} + +s32 +brcmf_fil_cmd_data_get(struct brcmf_if *ifp, u32 cmd, void *data, u32 len) +{ + s32 err; + + mutex_lock(&ifp->drvr->proto_block); + err = brcmf_fil_cmd_data(ifp, cmd, data, len, false); + + brcmf_dbg(FIL, "cmd=%d, len=%d\n", cmd, len); + brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, + min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); + + mutex_unlock(&ifp->drvr->proto_block); + + return err; +} + + +s32 +brcmf_fil_cmd_int_set(struct brcmf_if *ifp, u32 cmd, u32 data) +{ + s32 err; + __le32 data_le = cpu_to_le32(data); + + mutex_lock(&ifp->drvr->proto_block); + brcmf_dbg(FIL, "cmd=%d, value=%d\n", cmd, data); + err = brcmf_fil_cmd_data(ifp, cmd, &data_le, sizeof(data_le), true); + mutex_unlock(&ifp->drvr->proto_block); + + return err; +} + +s32 +brcmf_fil_cmd_int_get(struct brcmf_if *ifp, u32 cmd, u32 *data) +{ + s32 err; + __le32 data_le = cpu_to_le32(*data); + + mutex_lock(&ifp->drvr->proto_block); + err = brcmf_fil_cmd_data(ifp, cmd, &data_le, sizeof(data_le), false); + mutex_unlock(&ifp->drvr->proto_block); + *data = le32_to_cpu(data_le); + brcmf_dbg(FIL, "cmd=%d, value=%d\n", cmd, *data); + + return err; +} + +static u32 +brcmf_create_iovar(char *name, const char *data, u32 datalen, + char *buf, u32 buflen) +{ + u32 len; + + len = strlen(name) + 1; + + if ((len + datalen) > buflen) + return 0; + + memcpy(buf, name, len); + + /* append data onto the end of the name string */ + if (data && datalen) + memcpy(&buf[len], data, datalen); + + return len + datalen; +} + + +s32 +brcmf_fil_iovar_data_set(struct brcmf_if *ifp, char *name, const void *data, + u32 len) +{ + struct brcmf_pub *drvr = ifp->drvr; + s32 err; + u32 buflen; + + mutex_lock(&drvr->proto_block); + + brcmf_dbg(FIL, "name=%s, len=%d\n", name, len); + brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, + min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); + + buflen = brcmf_create_iovar(name, data, len, drvr->proto_buf, + sizeof(drvr->proto_buf)); + if (buflen) { + err = brcmf_fil_cmd_data(ifp, BRCMF_C_SET_VAR, drvr->proto_buf, + buflen, true); + } else { + err = -EPERM; + brcmf_err("Creating iovar failed\n"); + } + + mutex_unlock(&drvr->proto_block); + return err; +} + +s32 +brcmf_fil_iovar_data_get(struct brcmf_if *ifp, char *name, void *data, + u32 len) +{ + struct brcmf_pub *drvr = ifp->drvr; + s32 err; + u32 buflen; + + mutex_lock(&drvr->proto_block); + + buflen = brcmf_create_iovar(name, data, len, drvr->proto_buf, + sizeof(drvr->proto_buf)); + if (buflen) { + err = brcmf_fil_cmd_data(ifp, BRCMF_C_GET_VAR, drvr->proto_buf, + buflen, false); + if (err == 0) + memcpy(data, drvr->proto_buf, len); + } else { + err = -EPERM; + brcmf_err("Creating iovar failed\n"); + } + + brcmf_dbg(FIL, "name=%s, len=%d\n", name, len); + brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, + min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); + + mutex_unlock(&drvr->proto_block); + return err; +} + +s32 +brcmf_fil_iovar_int_set(struct brcmf_if *ifp, char *name, u32 data) +{ + __le32 data_le = cpu_to_le32(data); + + return brcmf_fil_iovar_data_set(ifp, name, &data_le, sizeof(data_le)); +} + +s32 +brcmf_fil_iovar_int_get(struct brcmf_if *ifp, char *name, u32 *data) +{ + __le32 data_le = cpu_to_le32(*data); + s32 err; + + err = brcmf_fil_iovar_data_get(ifp, name, &data_le, sizeof(data_le)); + if (err == 0) + *data = le32_to_cpu(data_le); + return err; +} + +static u32 +brcmf_create_bsscfg(s32 bssidx, char *name, char *data, u32 datalen, char *buf, + u32 buflen) +{ + const s8 *prefix = "bsscfg:"; + s8 *p; + u32 prefixlen; + u32 namelen; + u32 iolen; + __le32 bssidx_le; + + if (bssidx == 0) + return brcmf_create_iovar(name, data, datalen, buf, buflen); + + prefixlen = strlen(prefix); + namelen = strlen(name) + 1; /* lengh of iovar name + null */ + iolen = prefixlen + namelen + sizeof(bssidx_le) + datalen; + + if (buflen < iolen) { + brcmf_err("buffer is too short\n"); + return 0; + } + + p = buf; + + /* copy prefix, no null */ + memcpy(p, prefix, prefixlen); + p += prefixlen; + + /* copy iovar name including null */ + memcpy(p, name, namelen); + p += namelen; + + /* bss config index as first data */ + bssidx_le = cpu_to_le32(bssidx); + memcpy(p, &bssidx_le, sizeof(bssidx_le)); + p += sizeof(bssidx_le); + + /* parameter buffer follows */ + if (datalen) + memcpy(p, data, datalen); + + return iolen; +} + +s32 +brcmf_fil_bsscfg_data_set(struct brcmf_if *ifp, char *name, + void *data, u32 len) +{ + struct brcmf_pub *drvr = ifp->drvr; + s32 err; + u32 buflen; + + mutex_lock(&drvr->proto_block); + + brcmf_dbg(FIL, "bssidx=%d, name=%s, len=%d\n", ifp->bssidx, name, len); + brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, + min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); + + buflen = brcmf_create_bsscfg(ifp->bssidx, name, data, len, + drvr->proto_buf, sizeof(drvr->proto_buf)); + if (buflen) { + err = brcmf_fil_cmd_data(ifp, BRCMF_C_SET_VAR, drvr->proto_buf, + buflen, true); + } else { + err = -EPERM; + brcmf_err("Creating bsscfg failed\n"); + } + + mutex_unlock(&drvr->proto_block); + return err; +} + +s32 +brcmf_fil_bsscfg_data_get(struct brcmf_if *ifp, char *name, + void *data, u32 len) +{ + struct brcmf_pub *drvr = ifp->drvr; + s32 err; + u32 buflen; + + mutex_lock(&drvr->proto_block); + + buflen = brcmf_create_bsscfg(ifp->bssidx, name, data, len, + drvr->proto_buf, sizeof(drvr->proto_buf)); + if (buflen) { + err = brcmf_fil_cmd_data(ifp, BRCMF_C_GET_VAR, drvr->proto_buf, + buflen, false); + if (err == 0) + memcpy(data, drvr->proto_buf, len); + } else { + err = -EPERM; + brcmf_err("Creating bsscfg failed\n"); + } + brcmf_dbg(FIL, "bssidx=%d, name=%s, len=%d\n", ifp->bssidx, name, len); + brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, + min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n"); + + mutex_unlock(&drvr->proto_block); + return err; + +} + +s32 +brcmf_fil_bsscfg_int_set(struct brcmf_if *ifp, char *name, u32 data) +{ + __le32 data_le = cpu_to_le32(data); + + return brcmf_fil_bsscfg_data_set(ifp, name, &data_le, + sizeof(data_le)); +} + +s32 +brcmf_fil_bsscfg_int_get(struct brcmf_if *ifp, char *name, u32 *data) +{ + __le32 data_le = cpu_to_le32(*data); + s32 err; + + err = brcmf_fil_bsscfg_data_get(ifp, name, &data_le, + sizeof(data_le)); + if (err == 0) + *data = le32_to_cpu(data_le); + return err; +} diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwil.h b/drivers/net/wireless/brcm80211/brcmfmac/fwil.h new file mode 100644 index 00000000000..a30be683f4a --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/fwil.h @@ -0,0 +1,100 @@ +/* + * Copyright (c) 2012 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef _fwil_h_ +#define _fwil_h_ + +/******************************************************************************* + * Dongle command codes that are interpreted by firmware + ******************************************************************************/ +#define BRCMF_C_GET_VERSION 1 +#define BRCMF_C_UP 2 +#define BRCMF_C_DOWN 3 +#define BRCMF_C_SET_PROMISC 10 +#define BRCMF_C_GET_RATE 12 +#define BRCMF_C_GET_INFRA 19 +#define BRCMF_C_SET_INFRA 20 +#define BRCMF_C_GET_AUTH 21 +#define BRCMF_C_SET_AUTH 22 +#define BRCMF_C_GET_BSSID 23 +#define BRCMF_C_GET_SSID 25 +#define BRCMF_C_SET_SSID 26 +#define BRCMF_C_TERMINATED 28 +#define BRCMF_C_GET_CHANNEL 29 +#define BRCMF_C_SET_CHANNEL 30 +#define BRCMF_C_GET_SRL 31 +#define BRCMF_C_SET_SRL 32 +#define BRCMF_C_GET_LRL 33 +#define BRCMF_C_SET_LRL 34 +#define BRCMF_C_GET_RADIO 37 +#define BRCMF_C_SET_RADIO 38 +#define BRCMF_C_GET_PHYTYPE 39 +#define BRCMF_C_SET_KEY 45 +#define BRCMF_C_SET_PASSIVE_SCAN 49 +#define BRCMF_C_SCAN 50 +#define BRCMF_C_SCAN_RESULTS 51 +#define BRCMF_C_DISASSOC 52 +#define BRCMF_C_REASSOC 53 +#define BRCMF_C_SET_ROAM_TRIGGER 55 +#define BRCMF_C_SET_ROAM_DELTA 57 +#define BRCMF_C_GET_BCNPRD 75 +#define BRCMF_C_SET_BCNPRD 76 +#define BRCMF_C_GET_DTIMPRD 77 +#define BRCMF_C_SET_DTIMPRD 78 +#define BRCMF_C_SET_COUNTRY 84 +#define BRCMF_C_GET_PM 85 +#define BRCMF_C_SET_PM 86 +#define BRCMF_C_GET_CURR_RATESET 114 +#define BRCMF_C_GET_AP 117 +#define BRCMF_C_SET_AP 118 +#define BRCMF_C_GET_RSSI 127 +#define BRCMF_C_GET_WSEC 133 +#define BRCMF_C_SET_WSEC 134 +#define BRCMF_C_GET_PHY_NOISE 135 +#define BRCMF_C_GET_BSS_INFO 136 +#define BRCMF_C_GET_BANDLIST 140 +#define BRCMF_C_SET_SCB_TIMEOUT 158 +#define BRCMF_C_GET_PHYLIST 180 +#define BRCMF_C_SET_SCAN_CHANNEL_TIME 185 +#define BRCMF_C_SET_SCAN_UNASSOC_TIME 187 +#define BRCMF_C_SCB_DEAUTHENTICATE_FOR_REASON 201 +#define BRCMF_C_GET_VALID_CHANNELS 217 +#define BRCMF_C_GET_KEY_PRIMARY 235 +#define BRCMF_C_SET_KEY_PRIMARY 236 +#define BRCMF_C_SET_SCAN_PASSIVE_TIME 258 +#define BRCMF_C_GET_VAR 262 +#define BRCMF_C_SET_VAR 263 + +s32 brcmf_fil_cmd_data_set(struct brcmf_if *ifp, u32 cmd, void *data, u32 len); +s32 brcmf_fil_cmd_data_get(struct brcmf_if *ifp, u32 cmd, void *data, u32 len); +s32 brcmf_fil_cmd_int_set(struct brcmf_if *ifp, u32 cmd, u32 data); +s32 brcmf_fil_cmd_int_get(struct brcmf_if *ifp, u32 cmd, u32 *data); + +s32 brcmf_fil_iovar_data_set(struct brcmf_if *ifp, char *name, const void *data, + u32 len); +s32 brcmf_fil_iovar_data_get(struct brcmf_if *ifp, char *name, void *data, + u32 len); +s32 brcmf_fil_iovar_int_set(struct brcmf_if *ifp, char *name, u32 data); +s32 brcmf_fil_iovar_int_get(struct brcmf_if *ifp, char *name, u32 *data); + +s32 brcmf_fil_bsscfg_data_set(struct brcmf_if *ifp, char *name, void *data, + u32 len); +s32 brcmf_fil_bsscfg_data_get(struct brcmf_if *ifp, char *name, void *data, + u32 len); +s32 brcmf_fil_bsscfg_int_set(struct brcmf_if *ifp, char *name, u32 data); +s32 brcmf_fil_bsscfg_int_get(struct brcmf_if *ifp, char *name, u32 *data); + +#endif /* _fwil_h_ */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h b/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h new file mode 100644 index 00000000000..2bc68a2137f --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/fwil_types.h @@ -0,0 +1,431 @@ +/* + * Copyright (c) 2012 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + + +#ifndef FWIL_TYPES_H_ +#define FWIL_TYPES_H_ + +#include <linux/if_ether.h> + + +#define BRCMF_FIL_ACTION_FRAME_SIZE 1800 + +/* ARP Offload feature flags for arp_ol iovar */ +#define BRCMF_ARP_OL_AGENT 0x00000001 +#define BRCMF_ARP_OL_SNOOP 0x00000002 +#define BRCMF_ARP_OL_HOST_AUTO_REPLY 0x00000004 +#define BRCMF_ARP_OL_PEER_AUTO_REPLY 0x00000008 + +#define BRCMF_BSS_INFO_VERSION 109 /* curr ver of brcmf_bss_info_le struct */ +#define BRCMF_BSS_RSSI_ON_CHANNEL 0x0002 + +#define BRCMF_STA_ASSOC 0x10 /* Associated */ + +/* size of brcmf_scan_params not including variable length array */ +#define BRCMF_SCAN_PARAMS_FIXED_SIZE 64 + +/* masks for channel and ssid count */ +#define BRCMF_SCAN_PARAMS_COUNT_MASK 0x0000ffff +#define BRCMF_SCAN_PARAMS_NSSID_SHIFT 16 + +/* primary (ie tx) key */ +#define BRCMF_PRIMARY_KEY (1 << 1) +#define DOT11_BSSTYPE_ANY 2 +#define BRCMF_ESCAN_REQ_VERSION 1 + +#define BRCMF_MAXRATES_IN_SET 16 /* max # of rates in rateset */ + +/* OBSS Coex Auto/On/Off */ +#define BRCMF_OBSS_COEX_AUTO (-1) +#define BRCMF_OBSS_COEX_OFF 0 +#define BRCMF_OBSS_COEX_ON 1 + +/* join preference types for join_pref iovar */ +enum brcmf_join_pref_types { + BRCMF_JOIN_PREF_RSSI = 1, + BRCMF_JOIN_PREF_WPA, + BRCMF_JOIN_PREF_BAND, + BRCMF_JOIN_PREF_RSSI_DELTA, +}; + +enum brcmf_fil_p2p_if_types { + BRCMF_FIL_P2P_IF_CLIENT, + BRCMF_FIL_P2P_IF_GO, + BRCMF_FIL_P2P_IF_DYNBCN_GO, + BRCMF_FIL_P2P_IF_DEV, +}; + +struct brcmf_fil_p2p_if_le { + u8 addr[ETH_ALEN]; + __le16 type; + __le16 chspec; +}; + +struct brcmf_fil_chan_info_le { + __le32 hw_channel; + __le32 target_channel; + __le32 scan_channel; +}; + +struct brcmf_fil_action_frame_le { + u8 da[ETH_ALEN]; + __le16 len; + __le32 packet_id; + u8 data[BRCMF_FIL_ACTION_FRAME_SIZE]; +}; + +struct brcmf_fil_af_params_le { + __le32 channel; + __le32 dwell_time; + u8 bssid[ETH_ALEN]; + u8 pad[2]; + struct brcmf_fil_action_frame_le action_frame; +}; + +struct brcmf_fil_bss_enable_le { + __le32 bsscfg_idx; + __le32 enable; +}; + +struct brcmf_fil_bwcap_le { + __le32 band; + __le32 bw_cap; +}; + +/** + * struct tdls_iovar - common structure for tdls iovars. + * + * @ea: ether address of peer station. + * @mode: mode value depending on specific tdls iovar. + * @chanspec: channel specification. + * @pad: unused (for future use). + */ +struct brcmf_tdls_iovar_le { + u8 ea[ETH_ALEN]; /* Station address */ + u8 mode; /* mode: depends on iovar */ + __le16 chanspec; + __le32 pad; /* future */ +}; + +enum brcmf_tdls_manual_ep_ops { + BRCMF_TDLS_MANUAL_EP_CREATE = 1, + BRCMF_TDLS_MANUAL_EP_DELETE = 3, + BRCMF_TDLS_MANUAL_EP_DISCOVERY = 6 +}; + +/* Pattern matching filter. Specifies an offset within received packets to + * start matching, the pattern to match, the size of the pattern, and a bitmask + * that indicates which bits within the pattern should be matched. + */ +struct brcmf_pkt_filter_pattern_le { + /* + * Offset within received packet to start pattern matching. + * Offset '0' is the first byte of the ethernet header. + */ + __le32 offset; + /* Size of the pattern. Bitmask must be the same size.*/ + __le32 size_bytes; + /* + * Variable length mask and pattern data. mask starts at offset 0. + * Pattern immediately follows mask. + */ + u8 mask_and_pattern[1]; +}; + +/* IOVAR "pkt_filter_add" parameter. Used to install packet filters. */ +struct brcmf_pkt_filter_le { + __le32 id; /* Unique filter id, specified by app. */ + __le32 type; /* Filter type (WL_PKT_FILTER_TYPE_xxx). */ + __le32 negate_match; /* Negate the result of filter matches */ + union { /* Filter definitions */ + struct brcmf_pkt_filter_pattern_le pattern; /* Filter pattern */ + } u; +}; + +/* IOVAR "pkt_filter_enable" parameter. */ +struct brcmf_pkt_filter_enable_le { + __le32 id; /* Unique filter id */ + __le32 enable; /* Enable/disable bool */ +}; + +/* BSS info structure + * Applications MUST CHECK ie_offset field and length field to access IEs and + * next bss_info structure in a vector (in struct brcmf_scan_results) + */ +struct brcmf_bss_info_le { + __le32 version; /* version field */ + __le32 length; /* byte length of data in this record, + * starting at version and including IEs + */ + u8 BSSID[ETH_ALEN]; + __le16 beacon_period; /* units are Kusec */ + __le16 capability; /* Capability information */ + u8 SSID_len; + u8 SSID[32]; + struct { + __le32 count; /* # rates in this set */ + u8 rates[16]; /* rates in 500kbps units w/hi bit set if basic */ + } rateset; /* supported rates */ + __le16 chanspec; /* chanspec for bss */ + __le16 atim_window; /* units are Kusec */ + u8 dtim_period; /* DTIM period */ + __le16 RSSI; /* receive signal strength (in dBm) */ + s8 phy_noise; /* noise (in dBm) */ + + u8 n_cap; /* BSS is 802.11N Capable */ + /* 802.11N BSS Capabilities (based on HT_CAP_*): */ + __le32 nbss_cap; + u8 ctl_ch; /* 802.11N BSS control channel number */ + __le32 reserved32[1]; /* Reserved for expansion of BSS properties */ + u8 flags; /* flags */ + u8 reserved[3]; /* Reserved for expansion of BSS properties */ + u8 basic_mcs[MCSSET_LEN]; /* 802.11N BSS required MCS set */ + + __le16 ie_offset; /* offset at which IEs start, from beginning */ + __le32 ie_length; /* byte length of Information Elements */ + __le16 SNR; /* average SNR of during frame reception */ + /* Add new fields here */ + /* variable length Information Elements */ +}; + +struct brcm_rateset_le { + /* # rates in this set */ + __le32 count; + /* rates in 500kbps units w/hi bit set if basic */ + u8 rates[BRCMF_MAXRATES_IN_SET]; +}; + +struct brcmf_ssid { + u32 SSID_len; + unsigned char SSID[32]; +}; + +struct brcmf_ssid_le { + __le32 SSID_len; + unsigned char SSID[32]; +}; + +struct brcmf_scan_params_le { + struct brcmf_ssid_le ssid_le; /* default: {0, ""} */ + u8 bssid[ETH_ALEN]; /* default: bcast */ + s8 bss_type; /* default: any, + * DOT11_BSSTYPE_ANY/INFRASTRUCTURE/INDEPENDENT + */ + u8 scan_type; /* flags, 0 use default */ + __le32 nprobes; /* -1 use default, number of probes per channel */ + __le32 active_time; /* -1 use default, dwell time per channel for + * active scanning + */ + __le32 passive_time; /* -1 use default, dwell time per channel + * for passive scanning + */ + __le32 home_time; /* -1 use default, dwell time for the + * home channel between channel scans + */ + __le32 channel_num; /* count of channels and ssids that follow + * + * low half is count of channels in + * channel_list, 0 means default (use all + * available channels) + * + * high half is entries in struct brcmf_ssid + * array that follows channel_list, aligned for + * s32 (4 bytes) meaning an odd channel count + * implies a 2-byte pad between end of + * channel_list and first ssid + * + * if ssid count is zero, single ssid in the + * fixed parameter portion is assumed, otherwise + * ssid in the fixed portion is ignored + */ + __le16 channel_list[1]; /* list of chanspecs */ +}; + +struct brcmf_scan_results { + u32 buflen; + u32 version; + u32 count; + struct brcmf_bss_info_le bss_info_le[]; +}; + +struct brcmf_escan_params_le { + __le32 version; + __le16 action; + __le16 sync_id; + struct brcmf_scan_params_le params_le; +}; + +struct brcmf_escan_result_le { + __le32 buflen; + __le32 version; + __le16 sync_id; + __le16 bss_count; + struct brcmf_bss_info_le bss_info_le; +}; + +#define WL_ESCAN_RESULTS_FIXED_SIZE (sizeof(struct brcmf_escan_result_le) - \ + sizeof(struct brcmf_bss_info_le)) + +/* used for association with a specific BSSID and chanspec list */ +struct brcmf_assoc_params_le { + /* 00:00:00:00:00:00: broadcast scan */ + u8 bssid[ETH_ALEN]; + /* 0: all available channels, otherwise count of chanspecs in + * chanspec_list */ + __le32 chanspec_num; + /* list of chanspecs */ + __le16 chanspec_list[1]; +}; + +/** + * struct join_pref params - parameters for preferred join selection. + * + * @type: preference type (see enum brcmf_join_pref_types). + * @len: length of bytes following (currently always 2). + * @rssi_gain: signal gain for selection (only when @type is RSSI_DELTA). + * @band: band to which selection preference applies. + * This is used if @type is BAND or RSSI_DELTA. + */ +struct brcmf_join_pref_params { + u8 type; + u8 len; + u8 rssi_gain; + u8 band; +}; + +/* used for join with or without a specific bssid and channel list */ +struct brcmf_join_params { + struct brcmf_ssid_le ssid_le; + struct brcmf_assoc_params_le params_le; +}; + +/* scan params for extended join */ +struct brcmf_join_scan_params_le { + u8 scan_type; /* 0 use default, active or passive scan */ + __le32 nprobes; /* -1 use default, nr of probes per channel */ + __le32 active_time; /* -1 use default, dwell time per channel for + * active scanning + */ + __le32 passive_time; /* -1 use default, dwell time per channel + * for passive scanning + */ + __le32 home_time; /* -1 use default, dwell time for the home + * channel between channel scans + */ +}; + +/* extended join params */ +struct brcmf_ext_join_params_le { + struct brcmf_ssid_le ssid_le; /* {0, ""}: wildcard scan */ + struct brcmf_join_scan_params_le scan_le; + struct brcmf_assoc_params_le assoc_le; +}; + +struct brcmf_wsec_key { + u32 index; /* key index */ + u32 len; /* key length */ + u8 data[WLAN_MAX_KEY_LEN]; /* key data */ + u32 pad_1[18]; + u32 algo; /* CRYPTO_ALGO_AES_CCM, CRYPTO_ALGO_WEP128, etc */ + u32 flags; /* misc flags */ + u32 pad_2[3]; + u32 iv_initialized; /* has IV been initialized already? */ + u32 pad_3; + /* Rx IV */ + struct { + u32 hi; /* upper 32 bits of IV */ + u16 lo; /* lower 16 bits of IV */ + } rxiv; + u32 pad_4[2]; + u8 ea[ETH_ALEN]; /* per station */ +}; + +/* + * dongle requires same struct as above but with fields in little endian order + */ +struct brcmf_wsec_key_le { + __le32 index; /* key index */ + __le32 len; /* key length */ + u8 data[WLAN_MAX_KEY_LEN]; /* key data */ + __le32 pad_1[18]; + __le32 algo; /* CRYPTO_ALGO_AES_CCM, CRYPTO_ALGO_WEP128, etc */ + __le32 flags; /* misc flags */ + __le32 pad_2[3]; + __le32 iv_initialized; /* has IV been initialized already? */ + __le32 pad_3; + /* Rx IV */ + struct { + __le32 hi; /* upper 32 bits of IV */ + __le16 lo; /* lower 16 bits of IV */ + } rxiv; + __le32 pad_4[2]; + u8 ea[ETH_ALEN]; /* per station */ +}; + +/* Used to get specific STA parameters */ +struct brcmf_scb_val_le { + __le32 val; + u8 ea[ETH_ALEN]; +}; + +/* channel encoding */ +struct brcmf_channel_info_le { + __le32 hw_channel; + __le32 target_channel; + __le32 scan_channel; +}; + +struct brcmf_sta_info_le { + __le16 ver; /* version of this struct */ + __le16 len; /* length in bytes of this structure */ + __le16 cap; /* sta's advertised capabilities */ + __le32 flags; /* flags defined below */ + __le32 idle; /* time since data pkt rx'd from sta */ + u8 ea[ETH_ALEN]; /* Station address */ + __le32 count; /* # rates in this set */ + u8 rates[BRCMF_MAXRATES_IN_SET]; /* rates in 500kbps units */ + /* w/hi bit set if basic */ + __le32 in; /* seconds elapsed since associated */ + __le32 listen_interval_inms; /* Min Listen interval in ms for STA */ + __le32 tx_pkts; /* # of packets transmitted */ + __le32 tx_failures; /* # of packets failed */ + __le32 rx_ucast_pkts; /* # of unicast packets received */ + __le32 rx_mcast_pkts; /* # of multicast packets received */ + __le32 tx_rate; /* Rate of last successful tx frame */ + __le32 rx_rate; /* Rate of last successful rx frame */ + __le32 rx_decrypt_succeeds; /* # of packet decrypted successfully */ + __le32 rx_decrypt_failures; /* # of packet decrypted failed */ +}; + +struct brcmf_chanspec_list { + __le32 count; /* # of entries */ + __le32 element[1]; /* variable length uint32 list */ +}; + +/* + * WLC_E_PROBRESP_MSG + * WLC_E_P2P_PROBREQ_MSG + * WLC_E_ACTION_FRAME_RX + */ +struct brcmf_rx_mgmt_data { + __be16 version; + __be16 chanspec; + __be32 rssi; + __be32 mactime; + __be32 rate; +}; + +#endif /* FWIL_TYPES_H_ */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c new file mode 100644 index 00000000000..699908de314 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.c @@ -0,0 +1,2172 @@ +/* + * Copyright (c) 2010 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#include <linux/types.h> +#include <linux/module.h> +#include <linux/if_ether.h> +#include <linux/spinlock.h> +#include <linux/skbuff.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <linux/err.h> +#include <linux/jiffies.h> +#include <net/cfg80211.h> + +#include <brcmu_utils.h> +#include <brcmu_wifi.h> +#include "dhd.h" +#include "dhd_dbg.h" +#include "dhd_bus.h" +#include "fwil.h" +#include "fwil_types.h" +#include "fweh.h" +#include "fwsignal.h" +#include "p2p.h" +#include "wl_cfg80211.h" +#include "proto.h" + +/** + * DOC: Firmware Signalling + * + * Firmware can send signals to host and vice versa, which are passed in the + * data packets using TLV based header. This signalling layer is on top of the + * BDC bus protocol layer. + */ + +/* + * single definition for firmware-driver flow control tlv's. + * + * each tlv is specified by BRCMF_FWS_TLV_DEF(name, ID, length). + * A length value 0 indicates variable length tlv. + */ +#define BRCMF_FWS_TLV_DEFLIST \ + BRCMF_FWS_TLV_DEF(MAC_OPEN, 1, 1) \ + BRCMF_FWS_TLV_DEF(MAC_CLOSE, 2, 1) \ + BRCMF_FWS_TLV_DEF(MAC_REQUEST_CREDIT, 3, 2) \ + BRCMF_FWS_TLV_DEF(TXSTATUS, 4, 4) \ + BRCMF_FWS_TLV_DEF(PKTTAG, 5, 4) \ + BRCMF_FWS_TLV_DEF(MACDESC_ADD, 6, 8) \ + BRCMF_FWS_TLV_DEF(MACDESC_DEL, 7, 8) \ + BRCMF_FWS_TLV_DEF(RSSI, 8, 1) \ + BRCMF_FWS_TLV_DEF(INTERFACE_OPEN, 9, 1) \ + BRCMF_FWS_TLV_DEF(INTERFACE_CLOSE, 10, 1) \ + BRCMF_FWS_TLV_DEF(FIFO_CREDITBACK, 11, 6) \ + BRCMF_FWS_TLV_DEF(PENDING_TRAFFIC_BMP, 12, 2) \ + BRCMF_FWS_TLV_DEF(MAC_REQUEST_PACKET, 13, 3) \ + BRCMF_FWS_TLV_DEF(HOST_REORDER_RXPKTS, 14, 10) \ + BRCMF_FWS_TLV_DEF(TRANS_ID, 18, 6) \ + BRCMF_FWS_TLV_DEF(COMP_TXSTATUS, 19, 1) \ + BRCMF_FWS_TLV_DEF(FILLER, 255, 0) + +/* + * enum brcmf_fws_tlv_type - definition of tlv identifiers. + */ +#define BRCMF_FWS_TLV_DEF(name, id, len) \ + BRCMF_FWS_TYPE_ ## name = id, +enum brcmf_fws_tlv_type { + BRCMF_FWS_TLV_DEFLIST + BRCMF_FWS_TYPE_INVALID +}; +#undef BRCMF_FWS_TLV_DEF + +/* + * enum brcmf_fws_tlv_len - definition of tlv lengths. + */ +#define BRCMF_FWS_TLV_DEF(name, id, len) \ + BRCMF_FWS_TYPE_ ## name ## _LEN = (len), +enum brcmf_fws_tlv_len { + BRCMF_FWS_TLV_DEFLIST +}; +#undef BRCMF_FWS_TLV_DEF + +#ifdef DEBUG +/* + * brcmf_fws_tlv_names - array of tlv names. + */ +#define BRCMF_FWS_TLV_DEF(name, id, len) \ + { id, #name }, +static struct { + enum brcmf_fws_tlv_type id; + const char *name; +} brcmf_fws_tlv_names[] = { + BRCMF_FWS_TLV_DEFLIST +}; +#undef BRCMF_FWS_TLV_DEF + + +static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(brcmf_fws_tlv_names); i++) + if (brcmf_fws_tlv_names[i].id == id) + return brcmf_fws_tlv_names[i].name; + + return "INVALID"; +} +#else +static const char *brcmf_fws_get_tlv_name(enum brcmf_fws_tlv_type id) +{ + return "NODEBUG"; +} +#endif /* DEBUG */ + +/* + * The PKTTAG tlv has additional bytes when firmware-signalling + * mode has REUSESEQ flag set. + */ +#define BRCMF_FWS_TYPE_SEQ_LEN 2 + +/* + * flags used to enable tlv signalling from firmware. + */ +#define BRCMF_FWS_FLAGS_RSSI_SIGNALS 0x0001 +#define BRCMF_FWS_FLAGS_XONXOFF_SIGNALS 0x0002 +#define BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS 0x0004 +#define BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE 0x0008 +#define BRCMF_FWS_FLAGS_PSQ_GENERATIONFSM_ENABLE 0x0010 +#define BRCMF_FWS_FLAGS_PSQ_ZERO_BUFFER_ENABLE 0x0020 +#define BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE 0x0040 + +#define BRCMF_FWS_MAC_DESC_TABLE_SIZE 32 +#define BRCMF_FWS_MAC_DESC_ID_INVALID 0xff + +#define BRCMF_FWS_HOSTIF_FLOWSTATE_OFF 0 +#define BRCMF_FWS_HOSTIF_FLOWSTATE_ON 1 +#define BRCMF_FWS_FLOWCONTROL_HIWATER 128 +#define BRCMF_FWS_FLOWCONTROL_LOWATER 64 + +#define BRCMF_FWS_PSQ_PREC_COUNT ((BRCMF_FWS_FIFO_COUNT + 1) * 2) +#define BRCMF_FWS_PSQ_LEN 256 + +#define BRCMF_FWS_HTOD_FLAG_PKTFROMHOST 0x01 +#define BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED 0x02 + +#define BRCMF_FWS_RET_OK_NOSCHEDULE 0 +#define BRCMF_FWS_RET_OK_SCHEDULE 1 + +#define BRCMF_FWS_MODE_REUSESEQ_SHIFT 3 /* seq reuse */ +#define BRCMF_FWS_MODE_SET_REUSESEQ(x, val) ((x) = \ + ((x) & ~(1 << BRCMF_FWS_MODE_REUSESEQ_SHIFT)) | \ + (((val) & 1) << BRCMF_FWS_MODE_REUSESEQ_SHIFT)) +#define BRCMF_FWS_MODE_GET_REUSESEQ(x) \ + (((x) >> BRCMF_FWS_MODE_REUSESEQ_SHIFT) & 1) + +/** + * enum brcmf_fws_skb_state - indicates processing state of skb. + * + * @BRCMF_FWS_SKBSTATE_NEW: sk_buff is newly arrived in the driver. + * @BRCMF_FWS_SKBSTATE_DELAYED: sk_buff had to wait on queue. + * @BRCMF_FWS_SKBSTATE_SUPPRESSED: sk_buff has been suppressed by firmware. + * @BRCMF_FWS_SKBSTATE_TIM: allocated for TIM update info. + */ +enum brcmf_fws_skb_state { + BRCMF_FWS_SKBSTATE_NEW, + BRCMF_FWS_SKBSTATE_DELAYED, + BRCMF_FWS_SKBSTATE_SUPPRESSED, + BRCMF_FWS_SKBSTATE_TIM +}; + +/** + * struct brcmf_skbuff_cb - control buffer associated with skbuff. + * + * @bus_flags: 2 bytes reserved for bus specific parameters + * @if_flags: holds interface index and packet related flags. + * @htod: host to device packet identifier (used in PKTTAG tlv). + * @htod_seq: this 16-bit is original seq number for every suppress packet. + * @state: transmit state of the packet. + * @mac: descriptor related to destination for this packet. + * + * This information is stored in control buffer struct sk_buff::cb, which + * provides 48 bytes of storage so this structure should not exceed that. + */ +struct brcmf_skbuff_cb { + u16 bus_flags; + u16 if_flags; + u32 htod; + u16 htod_seq; + enum brcmf_fws_skb_state state; + struct brcmf_fws_mac_descriptor *mac; +}; + +/* + * macro casting skbuff control buffer to struct brcmf_skbuff_cb. + */ +#define brcmf_skbcb(skb) ((struct brcmf_skbuff_cb *)((skb)->cb)) + +/* + * sk_buff control if flags + * + * b[11] - packet sent upon firmware request. + * b[10] - packet only contains signalling data. + * b[9] - packet is a tx packet. + * b[8] - packet used requested credit + * b[7] - interface in AP mode. + * b[3:0] - interface index. + */ +#define BRCMF_SKB_IF_FLAGS_REQUESTED_MASK 0x0800 +#define BRCMF_SKB_IF_FLAGS_REQUESTED_SHIFT 11 +#define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_MASK 0x0400 +#define BRCMF_SKB_IF_FLAGS_SIGNAL_ONLY_SHIFT 10 +#define BRCMF_SKB_IF_FLAGS_TRANSMIT_MASK 0x0200 +#define BRCMF_SKB_IF_FLAGS_TRANSMIT_SHIFT 9 +#define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_MASK 0x0100 +#define BRCMF_SKB_IF_FLAGS_REQ_CREDIT_SHIFT 8 +#define BRCMF_SKB_IF_FLAGS_IF_AP_MASK 0x0080 +#define BRCMF_SKB_IF_FLAGS_IF_AP_SHIFT 7 +#define BRCMF_SKB_IF_FLAGS_INDEX_MASK 0x000f +#define BRCMF_SKB_IF_FLAGS_INDEX_SHIFT 0 + +#define brcmf_skb_if_flags_set_field(skb, field, value) \ + brcmu_maskset16(&(brcmf_skbcb(skb)->if_flags), \ + BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \ + BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT, (value)) +#define brcmf_skb_if_flags_get_field(skb, field) \ + brcmu_maskget16(brcmf_skbcb(skb)->if_flags, \ + BRCMF_SKB_IF_FLAGS_ ## field ## _MASK, \ + BRCMF_SKB_IF_FLAGS_ ## field ## _SHIFT) + +/* + * sk_buff control packet identifier + * + * 32-bit packet identifier used in PKTTAG tlv from host to dongle. + * + * - Generated at the host (e.g. dhd) + * - Seen as a generic sequence number by firmware except for the flags field. + * + * Generation : b[31] => generation number for this packet [host->fw] + * OR, current generation number [fw->host] + * Flags : b[30:27] => command, status flags + * FIFO-AC : b[26:24] => AC-FIFO id + * h-slot : b[23:8] => hanger-slot + * freerun : b[7:0] => A free running counter + */ +#define BRCMF_SKB_HTOD_TAG_GENERATION_MASK 0x80000000 +#define BRCMF_SKB_HTOD_TAG_GENERATION_SHIFT 31 +#define BRCMF_SKB_HTOD_TAG_FLAGS_MASK 0x78000000 +#define BRCMF_SKB_HTOD_TAG_FLAGS_SHIFT 27 +#define BRCMF_SKB_HTOD_TAG_FIFO_MASK 0x07000000 +#define BRCMF_SKB_HTOD_TAG_FIFO_SHIFT 24 +#define BRCMF_SKB_HTOD_TAG_HSLOT_MASK 0x00ffff00 +#define BRCMF_SKB_HTOD_TAG_HSLOT_SHIFT 8 +#define BRCMF_SKB_HTOD_TAG_FREERUN_MASK 0x000000ff +#define BRCMF_SKB_HTOD_TAG_FREERUN_SHIFT 0 + +#define brcmf_skb_htod_tag_set_field(skb, field, value) \ + brcmu_maskset32(&(brcmf_skbcb(skb)->htod), \ + BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \ + BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT, (value)) +#define brcmf_skb_htod_tag_get_field(skb, field) \ + brcmu_maskget32(brcmf_skbcb(skb)->htod, \ + BRCMF_SKB_HTOD_TAG_ ## field ## _MASK, \ + BRCMF_SKB_HTOD_TAG_ ## field ## _SHIFT) + +#define BRCMF_SKB_HTOD_SEQ_FROMFW_MASK 0x2000 +#define BRCMF_SKB_HTOD_SEQ_FROMFW_SHIFT 13 +#define BRCMF_SKB_HTOD_SEQ_FROMDRV_MASK 0x1000 +#define BRCMF_SKB_HTOD_SEQ_FROMDRV_SHIFT 12 +#define BRCMF_SKB_HTOD_SEQ_NR_MASK 0x0fff +#define BRCMF_SKB_HTOD_SEQ_NR_SHIFT 0 + +#define brcmf_skb_htod_seq_set_field(skb, field, value) \ + brcmu_maskset16(&(brcmf_skbcb(skb)->htod_seq), \ + BRCMF_SKB_HTOD_SEQ_ ## field ## _MASK, \ + BRCMF_SKB_HTOD_SEQ_ ## field ## _SHIFT, (value)) +#define brcmf_skb_htod_seq_get_field(skb, field) \ + brcmu_maskget16(brcmf_skbcb(skb)->htod_seq, \ + BRCMF_SKB_HTOD_SEQ_ ## field ## _MASK, \ + BRCMF_SKB_HTOD_SEQ_ ## field ## _SHIFT) + +#define BRCMF_FWS_TXSTAT_GENERATION_MASK 0x80000000 +#define BRCMF_FWS_TXSTAT_GENERATION_SHIFT 31 +#define BRCMF_FWS_TXSTAT_FLAGS_MASK 0x78000000 +#define BRCMF_FWS_TXSTAT_FLAGS_SHIFT 27 +#define BRCMF_FWS_TXSTAT_FIFO_MASK 0x07000000 +#define BRCMF_FWS_TXSTAT_FIFO_SHIFT 24 +#define BRCMF_FWS_TXSTAT_HSLOT_MASK 0x00FFFF00 +#define BRCMF_FWS_TXSTAT_HSLOT_SHIFT 8 +#define BRCMF_FWS_TXSTAT_FREERUN_MASK 0x000000FF +#define BRCMF_FWS_TXSTAT_FREERUN_SHIFT 0 + +#define brcmf_txstatus_get_field(txs, field) \ + brcmu_maskget32(txs, BRCMF_FWS_TXSTAT_ ## field ## _MASK, \ + BRCMF_FWS_TXSTAT_ ## field ## _SHIFT) + +/* How long to defer borrowing in jiffies */ +#define BRCMF_FWS_BORROW_DEFER_PERIOD (HZ / 10) + +/** + * enum brcmf_fws_fifo - fifo indices used by dongle firmware. + * + * @BRCMF_FWS_FIFO_FIRST: first fifo, ie. background. + * @BRCMF_FWS_FIFO_AC_BK: fifo for background traffic. + * @BRCMF_FWS_FIFO_AC_BE: fifo for best-effort traffic. + * @BRCMF_FWS_FIFO_AC_VI: fifo for video traffic. + * @BRCMF_FWS_FIFO_AC_VO: fifo for voice traffic. + * @BRCMF_FWS_FIFO_BCMC: fifo for broadcast/multicast (AP only). + * @BRCMF_FWS_FIFO_ATIM: fifo for ATIM (AP only). + * @BRCMF_FWS_FIFO_COUNT: number of fifos. + */ +enum brcmf_fws_fifo { + BRCMF_FWS_FIFO_FIRST, + BRCMF_FWS_FIFO_AC_BK = BRCMF_FWS_FIFO_FIRST, + BRCMF_FWS_FIFO_AC_BE, + BRCMF_FWS_FIFO_AC_VI, + BRCMF_FWS_FIFO_AC_VO, + BRCMF_FWS_FIFO_BCMC, + BRCMF_FWS_FIFO_ATIM, + BRCMF_FWS_FIFO_COUNT +}; + +/** + * enum brcmf_fws_txstatus - txstatus flag values. + * + * @BRCMF_FWS_TXSTATUS_DISCARD: + * host is free to discard the packet. + * @BRCMF_FWS_TXSTATUS_CORE_SUPPRESS: + * 802.11 core suppressed the packet. + * @BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS: + * firmware suppress the packet as device is already in PS mode. + * @BRCMF_FWS_TXSTATUS_FW_TOSSED: + * firmware tossed the packet. + * @BRCMF_FWS_TXSTATUS_HOST_TOSSED: + * host tossed the packet. + */ +enum brcmf_fws_txstatus { + BRCMF_FWS_TXSTATUS_DISCARD, + BRCMF_FWS_TXSTATUS_CORE_SUPPRESS, + BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS, + BRCMF_FWS_TXSTATUS_FW_TOSSED, + BRCMF_FWS_TXSTATUS_HOST_TOSSED +}; + +enum brcmf_fws_fcmode { + BRCMF_FWS_FCMODE_NONE, + BRCMF_FWS_FCMODE_IMPLIED_CREDIT, + BRCMF_FWS_FCMODE_EXPLICIT_CREDIT +}; + +enum brcmf_fws_mac_desc_state { + BRCMF_FWS_STATE_OPEN = 1, + BRCMF_FWS_STATE_CLOSE +}; + +/** + * struct brcmf_fws_mac_descriptor - firmware signalling data per node/interface + * + * @occupied: slot is in use. + * @mac_handle: handle for mac entry determined by firmware. + * @interface_id: interface index. + * @state: current state. + * @suppressed: mac entry is suppressed. + * @generation: generation bit. + * @ac_bitmap: ac queue bitmap. + * @requested_credit: credits requested by firmware. + * @ea: ethernet address. + * @seq: per-node free-running sequence. + * @psq: power-save queue. + * @transit_count: packet in transit to firmware. + */ +struct brcmf_fws_mac_descriptor { + char name[16]; + u8 occupied; + u8 mac_handle; + u8 interface_id; + u8 state; + bool suppressed; + u8 generation; + u8 ac_bitmap; + u8 requested_credit; + u8 requested_packet; + u8 ea[ETH_ALEN]; + u8 seq[BRCMF_FWS_FIFO_COUNT]; + struct pktq psq; + int transit_count; + int suppr_transit_count; + bool send_tim_signal; + u8 traffic_pending_bmp; + u8 traffic_lastreported_bmp; +}; + +#define BRCMF_FWS_HANGER_MAXITEMS 1024 + +/** + * enum brcmf_fws_hanger_item_state - state of hanger item. + * + * @BRCMF_FWS_HANGER_ITEM_STATE_FREE: item is free for use. + * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE: item is in use. + * @BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED: item was suppressed. + */ +enum brcmf_fws_hanger_item_state { + BRCMF_FWS_HANGER_ITEM_STATE_FREE = 1, + BRCMF_FWS_HANGER_ITEM_STATE_INUSE, + BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED +}; + + +/** + * struct brcmf_fws_hanger_item - single entry for tx pending packet. + * + * @state: entry is either free or occupied. + * @pkt: packet itself. + */ +struct brcmf_fws_hanger_item { + enum brcmf_fws_hanger_item_state state; + struct sk_buff *pkt; +}; + +/** + * struct brcmf_fws_hanger - holds packets awaiting firmware txstatus. + * + * @pushed: packets pushed to await txstatus. + * @popped: packets popped upon handling txstatus. + * @failed_to_push: packets that could not be pushed. + * @failed_to_pop: packets that could not be popped. + * @failed_slotfind: packets for which failed to find an entry. + * @slot_pos: last returned item index for a free entry. + * @items: array of hanger items. + */ +struct brcmf_fws_hanger { + u32 pushed; + u32 popped; + u32 failed_to_push; + u32 failed_to_pop; + u32 failed_slotfind; + u32 slot_pos; + struct brcmf_fws_hanger_item items[BRCMF_FWS_HANGER_MAXITEMS]; +}; + +struct brcmf_fws_macdesc_table { + struct brcmf_fws_mac_descriptor nodes[BRCMF_FWS_MAC_DESC_TABLE_SIZE]; + struct brcmf_fws_mac_descriptor iface[BRCMF_MAX_IFS]; + struct brcmf_fws_mac_descriptor other; +}; + +struct brcmf_fws_info { + struct brcmf_pub *drvr; + spinlock_t spinlock; + ulong flags; + struct brcmf_fws_stats stats; + struct brcmf_fws_hanger hanger; + enum brcmf_fws_fcmode fcmode; + bool fw_signals; + bool bcmc_credit_check; + struct brcmf_fws_macdesc_table desc; + struct workqueue_struct *fws_wq; + struct work_struct fws_dequeue_work; + u32 fifo_enqpkt[BRCMF_FWS_FIFO_COUNT]; + int fifo_credit[BRCMF_FWS_FIFO_COUNT]; + int credits_borrowed[BRCMF_FWS_FIFO_AC_VO + 1]; + int deq_node_pos[BRCMF_FWS_FIFO_COUNT]; + u32 fifo_credit_map; + u32 fifo_delay_map; + unsigned long borrow_defer_timestamp; + bool bus_flow_blocked; + bool creditmap_received; + u8 mode; + bool avoid_queueing; +}; + +/* + * brcmf_fws_prio2fifo - mapping from 802.1d priority to firmware fifo index. + */ +static const int brcmf_fws_prio2fifo[] = { + BRCMF_FWS_FIFO_AC_BE, + BRCMF_FWS_FIFO_AC_BK, + BRCMF_FWS_FIFO_AC_BK, + BRCMF_FWS_FIFO_AC_BE, + BRCMF_FWS_FIFO_AC_VI, + BRCMF_FWS_FIFO_AC_VI, + BRCMF_FWS_FIFO_AC_VO, + BRCMF_FWS_FIFO_AC_VO +}; + +static int fcmode; +module_param(fcmode, int, S_IRUSR); +MODULE_PARM_DESC(fcmode, "mode of firmware signalled flow control"); + +#define BRCMF_FWS_TLV_DEF(name, id, len) \ + case BRCMF_FWS_TYPE_ ## name: \ + return len; + +/** + * brcmf_fws_get_tlv_len() - returns defined length for given tlv id. + * + * @fws: firmware-signalling information. + * @id: identifier of the TLV. + * + * Return: the specified length for the given TLV; Otherwise -EINVAL. + */ +static int brcmf_fws_get_tlv_len(struct brcmf_fws_info *fws, + enum brcmf_fws_tlv_type id) +{ + switch (id) { + BRCMF_FWS_TLV_DEFLIST + default: + fws->stats.tlv_invalid_type++; + break; + } + return -EINVAL; +} +#undef BRCMF_FWS_TLV_DEF + +static void brcmf_fws_lock(struct brcmf_fws_info *fws) + __acquires(&fws->spinlock) +{ + spin_lock_irqsave(&fws->spinlock, fws->flags); +} + +static void brcmf_fws_unlock(struct brcmf_fws_info *fws) + __releases(&fws->spinlock) +{ + spin_unlock_irqrestore(&fws->spinlock, fws->flags); +} + +static bool brcmf_fws_ifidx_match(struct sk_buff *skb, void *arg) +{ + u32 ifidx = brcmf_skb_if_flags_get_field(skb, INDEX); + return ifidx == *(int *)arg; +} + +static void brcmf_fws_psq_flush(struct brcmf_fws_info *fws, struct pktq *q, + int ifidx) +{ + bool (*matchfn)(struct sk_buff *, void *) = NULL; + struct sk_buff *skb; + int prec; + + if (ifidx != -1) + matchfn = brcmf_fws_ifidx_match; + for (prec = 0; prec < q->num_prec; prec++) { + skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx); + while (skb) { + brcmu_pkt_buf_free_skb(skb); + skb = brcmu_pktq_pdeq_match(q, prec, matchfn, &ifidx); + } + } +} + +static void brcmf_fws_hanger_init(struct brcmf_fws_hanger *hanger) +{ + int i; + + memset(hanger, 0, sizeof(*hanger)); + for (i = 0; i < ARRAY_SIZE(hanger->items); i++) + hanger->items[i].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE; +} + +static u32 brcmf_fws_hanger_get_free_slot(struct brcmf_fws_hanger *h) +{ + u32 i; + + i = (h->slot_pos + 1) % BRCMF_FWS_HANGER_MAXITEMS; + + while (i != h->slot_pos) { + if (h->items[i].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) { + h->slot_pos = i; + goto done; + } + i++; + if (i == BRCMF_FWS_HANGER_MAXITEMS) + i = 0; + } + brcmf_err("all slots occupied\n"); + h->failed_slotfind++; + i = BRCMF_FWS_HANGER_MAXITEMS; +done: + return i; +} + +static int brcmf_fws_hanger_pushpkt(struct brcmf_fws_hanger *h, + struct sk_buff *pkt, u32 slot_id) +{ + if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS) + return -ENOENT; + + if (h->items[slot_id].state != BRCMF_FWS_HANGER_ITEM_STATE_FREE) { + brcmf_err("slot is not free\n"); + h->failed_to_push++; + return -EINVAL; + } + + h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_INUSE; + h->items[slot_id].pkt = pkt; + h->pushed++; + return 0; +} + +static int brcmf_fws_hanger_poppkt(struct brcmf_fws_hanger *h, + u32 slot_id, struct sk_buff **pktout, + bool remove_item) +{ + if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS) + return -ENOENT; + + if (h->items[slot_id].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) { + brcmf_err("entry not in use\n"); + h->failed_to_pop++; + return -EINVAL; + } + + *pktout = h->items[slot_id].pkt; + if (remove_item) { + h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_FREE; + h->items[slot_id].pkt = NULL; + h->popped++; + } + return 0; +} + +static int brcmf_fws_hanger_mark_suppressed(struct brcmf_fws_hanger *h, + u32 slot_id) +{ + if (slot_id >= BRCMF_FWS_HANGER_MAXITEMS) + return -ENOENT; + + if (h->items[slot_id].state == BRCMF_FWS_HANGER_ITEM_STATE_FREE) { + brcmf_err("entry not in use\n"); + return -EINVAL; + } + + h->items[slot_id].state = BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED; + return 0; +} + +static void brcmf_fws_hanger_cleanup(struct brcmf_fws_info *fws, + bool (*fn)(struct sk_buff *, void *), + int ifidx) +{ + struct brcmf_fws_hanger *h = &fws->hanger; + struct sk_buff *skb; + int i; + enum brcmf_fws_hanger_item_state s; + + for (i = 0; i < ARRAY_SIZE(h->items); i++) { + s = h->items[i].state; + if (s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE || + s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE_SUPPRESSED) { + skb = h->items[i].pkt; + if (fn == NULL || fn(skb, &ifidx)) { + /* suppress packets freed from psq */ + if (s == BRCMF_FWS_HANGER_ITEM_STATE_INUSE) + brcmu_pkt_buf_free_skb(skb); + h->items[i].state = + BRCMF_FWS_HANGER_ITEM_STATE_FREE; + } + } + } +} + +static void brcmf_fws_macdesc_set_name(struct brcmf_fws_info *fws, + struct brcmf_fws_mac_descriptor *desc) +{ + if (desc == &fws->desc.other) + strlcpy(desc->name, "MAC-OTHER", sizeof(desc->name)); + else if (desc->mac_handle) + scnprintf(desc->name, sizeof(desc->name), "MAC-%d:%d", + desc->mac_handle, desc->interface_id); + else + scnprintf(desc->name, sizeof(desc->name), "MACIF:%d", + desc->interface_id); +} + +static void brcmf_fws_macdesc_init(struct brcmf_fws_mac_descriptor *desc, + u8 *addr, u8 ifidx) +{ + brcmf_dbg(TRACE, + "enter: desc %p ea=%pM, ifidx=%u\n", desc, addr, ifidx); + desc->occupied = 1; + desc->state = BRCMF_FWS_STATE_OPEN; + desc->requested_credit = 0; + desc->requested_packet = 0; + /* depending on use may need ifp->bssidx instead */ + desc->interface_id = ifidx; + desc->ac_bitmap = 0xff; /* update this when handling APSD */ + if (addr) + memcpy(&desc->ea[0], addr, ETH_ALEN); +} + +static +void brcmf_fws_macdesc_deinit(struct brcmf_fws_mac_descriptor *desc) +{ + brcmf_dbg(TRACE, + "enter: ea=%pM, ifidx=%u\n", desc->ea, desc->interface_id); + desc->occupied = 0; + desc->state = BRCMF_FWS_STATE_CLOSE; + desc->requested_credit = 0; + desc->requested_packet = 0; +} + +static struct brcmf_fws_mac_descriptor * +brcmf_fws_macdesc_lookup(struct brcmf_fws_info *fws, u8 *ea) +{ + struct brcmf_fws_mac_descriptor *entry; + int i; + + if (ea == NULL) + return ERR_PTR(-EINVAL); + + entry = &fws->desc.nodes[0]; + for (i = 0; i < ARRAY_SIZE(fws->desc.nodes); i++) { + if (entry->occupied && !memcmp(entry->ea, ea, ETH_ALEN)) + return entry; + entry++; + } + + return ERR_PTR(-ENOENT); +} + +static struct brcmf_fws_mac_descriptor* +brcmf_fws_macdesc_find(struct brcmf_fws_info *fws, struct brcmf_if *ifp, u8 *da) +{ + struct brcmf_fws_mac_descriptor *entry = &fws->desc.other; + bool multicast; + + multicast = is_multicast_ether_addr(da); + + /* Multicast destination, STA and P2P clients get the interface entry. + * STA/GC gets the Mac Entry for TDLS destinations, TDLS destinations + * have their own entry. + */ + if (multicast && ifp->fws_desc) { + entry = ifp->fws_desc; + goto done; + } + + entry = brcmf_fws_macdesc_lookup(fws, da); + if (IS_ERR(entry)) + entry = ifp->fws_desc; + +done: + return entry; +} + +static bool brcmf_fws_macdesc_closed(struct brcmf_fws_info *fws, + struct brcmf_fws_mac_descriptor *entry, + int fifo) +{ + struct brcmf_fws_mac_descriptor *if_entry; + bool closed; + + /* for unique destination entries the related interface + * may be closed. + */ + if (entry->mac_handle) { + if_entry = &fws->desc.iface[entry->interface_id]; + if (if_entry->state == BRCMF_FWS_STATE_CLOSE) + return true; + } + /* an entry is closed when the state is closed and + * the firmware did not request anything. + */ + closed = entry->state == BRCMF_FWS_STATE_CLOSE && + !entry->requested_credit && !entry->requested_packet; + + /* Or firmware does not allow traffic for given fifo */ + return closed || !(entry->ac_bitmap & BIT(fifo)); +} + +static void brcmf_fws_macdesc_cleanup(struct brcmf_fws_info *fws, + struct brcmf_fws_mac_descriptor *entry, + int ifidx) +{ + if (entry->occupied && (ifidx == -1 || ifidx == entry->interface_id)) { + brcmf_fws_psq_flush(fws, &entry->psq, ifidx); + entry->occupied = !!(entry->psq.len); + } +} + +static void brcmf_fws_bus_txq_cleanup(struct brcmf_fws_info *fws, + bool (*fn)(struct sk_buff *, void *), + int ifidx) +{ + struct brcmf_fws_hanger_item *hi; + struct pktq *txq; + struct sk_buff *skb; + int prec; + u32 hslot; + + txq = brcmf_bus_gettxq(fws->drvr->bus_if); + if (IS_ERR(txq)) { + brcmf_dbg(TRACE, "no txq to clean up\n"); + return; + } + + for (prec = 0; prec < txq->num_prec; prec++) { + skb = brcmu_pktq_pdeq_match(txq, prec, fn, &ifidx); + while (skb) { + hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT); + hi = &fws->hanger.items[hslot]; + WARN_ON(skb != hi->pkt); + hi->state = BRCMF_FWS_HANGER_ITEM_STATE_FREE; + brcmu_pkt_buf_free_skb(skb); + skb = brcmu_pktq_pdeq_match(txq, prec, fn, &ifidx); + } + } +} + +static void brcmf_fws_cleanup(struct brcmf_fws_info *fws, int ifidx) +{ + int i; + struct brcmf_fws_mac_descriptor *table; + bool (*matchfn)(struct sk_buff *, void *) = NULL; + + if (fws == NULL) + return; + + if (ifidx != -1) + matchfn = brcmf_fws_ifidx_match; + + /* cleanup individual nodes */ + table = &fws->desc.nodes[0]; + for (i = 0; i < ARRAY_SIZE(fws->desc.nodes); i++) + brcmf_fws_macdesc_cleanup(fws, &table[i], ifidx); + + brcmf_fws_macdesc_cleanup(fws, &fws->desc.other, ifidx); + brcmf_fws_bus_txq_cleanup(fws, matchfn, ifidx); + brcmf_fws_hanger_cleanup(fws, matchfn, ifidx); +} + +static u8 brcmf_fws_hdrpush(struct brcmf_fws_info *fws, struct sk_buff *skb) +{ + struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac; + u8 *wlh; + u16 data_offset = 0; + u8 fillers; + __le32 pkttag = cpu_to_le32(brcmf_skbcb(skb)->htod); + __le16 pktseq = cpu_to_le16(brcmf_skbcb(skb)->htod_seq); + + brcmf_dbg(TRACE, "enter: %s, idx=%d hslot=%d htod %X seq %X\n", + entry->name, brcmf_skb_if_flags_get_field(skb, INDEX), + (le32_to_cpu(pkttag) >> 8) & 0xffff, + brcmf_skbcb(skb)->htod, brcmf_skbcb(skb)->htod_seq); + if (entry->send_tim_signal) + data_offset += 2 + BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN; + if (BRCMF_FWS_MODE_GET_REUSESEQ(fws->mode)) + data_offset += BRCMF_FWS_TYPE_SEQ_LEN; + /* +2 is for Type[1] and Len[1] in TLV, plus TIM signal */ + data_offset += 2 + BRCMF_FWS_TYPE_PKTTAG_LEN; + fillers = round_up(data_offset, 4) - data_offset; + data_offset += fillers; + + skb_push(skb, data_offset); + wlh = skb->data; + + wlh[0] = BRCMF_FWS_TYPE_PKTTAG; + wlh[1] = BRCMF_FWS_TYPE_PKTTAG_LEN; + memcpy(&wlh[2], &pkttag, sizeof(pkttag)); + if (BRCMF_FWS_MODE_GET_REUSESEQ(fws->mode)) { + wlh[1] += BRCMF_FWS_TYPE_SEQ_LEN; + memcpy(&wlh[2 + BRCMF_FWS_TYPE_PKTTAG_LEN], &pktseq, + sizeof(pktseq)); + } + wlh += wlh[1] + 2; + + if (entry->send_tim_signal) { + entry->send_tim_signal = 0; + wlh[0] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP; + wlh[1] = BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN; + wlh[2] = entry->mac_handle; + wlh[3] = entry->traffic_pending_bmp; + brcmf_dbg(TRACE, "adding TIM info: handle %d bmp 0x%X\n", + entry->mac_handle, entry->traffic_pending_bmp); + wlh += BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN + 2; + entry->traffic_lastreported_bmp = entry->traffic_pending_bmp; + } + if (fillers) + memset(wlh, BRCMF_FWS_TYPE_FILLER, fillers); + + return (u8)(data_offset >> 2); +} + +static bool brcmf_fws_tim_update(struct brcmf_fws_info *fws, + struct brcmf_fws_mac_descriptor *entry, + int fifo, bool send_immediately) +{ + struct sk_buff *skb; + struct brcmf_skbuff_cb *skcb; + s32 err; + u32 len; + u8 data_offset; + int ifidx; + + /* check delayedQ and suppressQ in one call using bitmap */ + if (brcmu_pktq_mlen(&entry->psq, 3 << (fifo * 2)) == 0) + entry->traffic_pending_bmp &= ~NBITVAL(fifo); + else + entry->traffic_pending_bmp |= NBITVAL(fifo); + + entry->send_tim_signal = false; + if (entry->traffic_lastreported_bmp != entry->traffic_pending_bmp) + entry->send_tim_signal = true; + if (send_immediately && entry->send_tim_signal && + entry->state == BRCMF_FWS_STATE_CLOSE) { + /* create a dummy packet and sent that. The traffic */ + /* bitmap info will automatically be attached to that packet */ + len = BRCMF_FWS_TYPE_PKTTAG_LEN + 2 + + BRCMF_FWS_TYPE_SEQ_LEN + + BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP_LEN + 2 + + 4 + fws->drvr->hdrlen; + skb = brcmu_pkt_buf_get_skb(len); + if (skb == NULL) + return false; + skb_pull(skb, len); + skcb = brcmf_skbcb(skb); + skcb->mac = entry; + skcb->state = BRCMF_FWS_SKBSTATE_TIM; + skcb->htod = 0; + skcb->htod_seq = 0; + data_offset = brcmf_fws_hdrpush(fws, skb); + ifidx = brcmf_skb_if_flags_get_field(skb, INDEX); + brcmf_fws_unlock(fws); + err = brcmf_proto_txdata(fws->drvr, ifidx, data_offset, skb); + brcmf_fws_lock(fws); + if (err) + brcmu_pkt_buf_free_skb(skb); + return true; + } + return false; +} + +static void +brcmf_fws_flow_control_check(struct brcmf_fws_info *fws, struct pktq *pq, + u8 if_id) +{ + struct brcmf_if *ifp = fws->drvr->iflist[!if_id ? 0 : if_id + 1]; + + if (WARN_ON(!ifp)) + return; + + if ((ifp->netif_stop & BRCMF_NETIF_STOP_REASON_FWS_FC) && + pq->len <= BRCMF_FWS_FLOWCONTROL_LOWATER) + brcmf_txflowblock_if(ifp, + BRCMF_NETIF_STOP_REASON_FWS_FC, false); + if (!(ifp->netif_stop & BRCMF_NETIF_STOP_REASON_FWS_FC) && + pq->len >= BRCMF_FWS_FLOWCONTROL_HIWATER) { + fws->stats.fws_flow_block++; + brcmf_txflowblock_if(ifp, BRCMF_NETIF_STOP_REASON_FWS_FC, true); + } + return; +} + +static int brcmf_fws_rssi_indicate(struct brcmf_fws_info *fws, s8 rssi) +{ + brcmf_dbg(CTL, "rssi %d\n", rssi); + return 0; +} + +static +int brcmf_fws_macdesc_indicate(struct brcmf_fws_info *fws, u8 type, u8 *data) +{ + struct brcmf_fws_mac_descriptor *entry, *existing; + u8 mac_handle; + u8 ifidx; + u8 *addr; + + mac_handle = *data++; + ifidx = *data++; + addr = data; + + entry = &fws->desc.nodes[mac_handle & 0x1F]; + if (type == BRCMF_FWS_TYPE_MACDESC_DEL) { + if (entry->occupied) { + brcmf_dbg(TRACE, "deleting %s mac %pM\n", + entry->name, addr); + brcmf_fws_lock(fws); + brcmf_fws_macdesc_cleanup(fws, entry, -1); + brcmf_fws_macdesc_deinit(entry); + brcmf_fws_unlock(fws); + } else + fws->stats.mac_update_failed++; + return 0; + } + + existing = brcmf_fws_macdesc_lookup(fws, addr); + if (IS_ERR(existing)) { + if (!entry->occupied) { + brcmf_fws_lock(fws); + entry->mac_handle = mac_handle; + brcmf_fws_macdesc_init(entry, addr, ifidx); + brcmf_fws_macdesc_set_name(fws, entry); + brcmu_pktq_init(&entry->psq, BRCMF_FWS_PSQ_PREC_COUNT, + BRCMF_FWS_PSQ_LEN); + brcmf_fws_unlock(fws); + brcmf_dbg(TRACE, "add %s mac %pM\n", entry->name, addr); + } else { + fws->stats.mac_update_failed++; + } + } else { + if (entry != existing) { + brcmf_dbg(TRACE, "copy mac %s\n", existing->name); + brcmf_fws_lock(fws); + memcpy(entry, existing, + offsetof(struct brcmf_fws_mac_descriptor, psq)); + entry->mac_handle = mac_handle; + brcmf_fws_macdesc_deinit(existing); + brcmf_fws_macdesc_set_name(fws, entry); + brcmf_fws_unlock(fws); + brcmf_dbg(TRACE, "relocate %s mac %pM\n", entry->name, + addr); + } else { + brcmf_dbg(TRACE, "use existing\n"); + WARN_ON(entry->mac_handle != mac_handle); + /* TODO: what should we do here: continue, reinit, .. */ + } + } + return 0; +} + +static int brcmf_fws_macdesc_state_indicate(struct brcmf_fws_info *fws, + u8 type, u8 *data) +{ + struct brcmf_fws_mac_descriptor *entry; + u8 mac_handle; + int ret; + + mac_handle = data[0]; + entry = &fws->desc.nodes[mac_handle & 0x1F]; + if (!entry->occupied) { + fws->stats.mac_ps_update_failed++; + return -ESRCH; + } + brcmf_fws_lock(fws); + /* a state update should wipe old credits */ + entry->requested_credit = 0; + entry->requested_packet = 0; + if (type == BRCMF_FWS_TYPE_MAC_OPEN) { + entry->state = BRCMF_FWS_STATE_OPEN; + ret = BRCMF_FWS_RET_OK_SCHEDULE; + } else { + entry->state = BRCMF_FWS_STATE_CLOSE; + brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_BK, false); + brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_BE, false); + brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_VI, false); + brcmf_fws_tim_update(fws, entry, BRCMF_FWS_FIFO_AC_VO, true); + ret = BRCMF_FWS_RET_OK_NOSCHEDULE; + } + brcmf_fws_unlock(fws); + return ret; +} + +static int brcmf_fws_interface_state_indicate(struct brcmf_fws_info *fws, + u8 type, u8 *data) +{ + struct brcmf_fws_mac_descriptor *entry; + u8 ifidx; + int ret; + + ifidx = data[0]; + + if (ifidx >= BRCMF_MAX_IFS) { + ret = -ERANGE; + goto fail; + } + + entry = &fws->desc.iface[ifidx]; + if (!entry->occupied) { + ret = -ESRCH; + goto fail; + } + + brcmf_dbg(TRACE, "%s (%d): %s\n", brcmf_fws_get_tlv_name(type), type, + entry->name); + brcmf_fws_lock(fws); + switch (type) { + case BRCMF_FWS_TYPE_INTERFACE_OPEN: + entry->state = BRCMF_FWS_STATE_OPEN; + ret = BRCMF_FWS_RET_OK_SCHEDULE; + break; + case BRCMF_FWS_TYPE_INTERFACE_CLOSE: + entry->state = BRCMF_FWS_STATE_CLOSE; + ret = BRCMF_FWS_RET_OK_NOSCHEDULE; + break; + default: + ret = -EINVAL; + brcmf_fws_unlock(fws); + goto fail; + } + brcmf_fws_unlock(fws); + return ret; + +fail: + fws->stats.if_update_failed++; + return ret; +} + +static int brcmf_fws_request_indicate(struct brcmf_fws_info *fws, u8 type, + u8 *data) +{ + struct brcmf_fws_mac_descriptor *entry; + + entry = &fws->desc.nodes[data[1] & 0x1F]; + if (!entry->occupied) { + if (type == BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT) + fws->stats.credit_request_failed++; + else + fws->stats.packet_request_failed++; + return -ESRCH; + } + + brcmf_dbg(TRACE, "%s (%d): %s cnt %d bmp %d\n", + brcmf_fws_get_tlv_name(type), type, entry->name, + data[0], data[2]); + brcmf_fws_lock(fws); + if (type == BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT) + entry->requested_credit = data[0]; + else + entry->requested_packet = data[0]; + + entry->ac_bitmap = data[2]; + brcmf_fws_unlock(fws); + return BRCMF_FWS_RET_OK_SCHEDULE; +} + +static void +brcmf_fws_macdesc_use_req_credit(struct brcmf_fws_mac_descriptor *entry, + struct sk_buff *skb) +{ + if (entry->requested_credit > 0) { + entry->requested_credit--; + brcmf_skb_if_flags_set_field(skb, REQUESTED, 1); + brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 1); + if (entry->state != BRCMF_FWS_STATE_CLOSE) + brcmf_err("requested credit set while mac not closed!\n"); + } else if (entry->requested_packet > 0) { + entry->requested_packet--; + brcmf_skb_if_flags_set_field(skb, REQUESTED, 1); + brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 0); + if (entry->state != BRCMF_FWS_STATE_CLOSE) + brcmf_err("requested packet set while mac not closed!\n"); + } else { + brcmf_skb_if_flags_set_field(skb, REQUESTED, 0); + brcmf_skb_if_flags_set_field(skb, REQ_CREDIT, 0); + } +} + +static void brcmf_fws_macdesc_return_req_credit(struct sk_buff *skb) +{ + struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac; + + if ((brcmf_skb_if_flags_get_field(skb, REQ_CREDIT)) && + (entry->state == BRCMF_FWS_STATE_CLOSE)) + entry->requested_credit++; +} + +static void brcmf_fws_return_credits(struct brcmf_fws_info *fws, + u8 fifo, u8 credits) +{ + int lender_ac; + int *borrowed; + int *fifo_credit; + + if (!credits) + return; + + fws->fifo_credit_map |= 1 << fifo; + + if ((fifo == BRCMF_FWS_FIFO_AC_BE) && + (fws->credits_borrowed[0])) { + for (lender_ac = BRCMF_FWS_FIFO_AC_VO; lender_ac >= 0; + lender_ac--) { + borrowed = &fws->credits_borrowed[lender_ac]; + if (*borrowed) { + fws->fifo_credit_map |= (1 << lender_ac); + fifo_credit = &fws->fifo_credit[lender_ac]; + if (*borrowed >= credits) { + *borrowed -= credits; + *fifo_credit += credits; + return; + } else { + credits -= *borrowed; + *fifo_credit += *borrowed; + *borrowed = 0; + } + } + } + } + + fws->fifo_credit[fifo] += credits; +} + +static void brcmf_fws_schedule_deq(struct brcmf_fws_info *fws) +{ + /* only schedule dequeue when there are credits for delayed traffic */ + if ((fws->fifo_credit_map & fws->fifo_delay_map) || + (!brcmf_fws_fc_active(fws) && fws->fifo_delay_map)) + queue_work(fws->fws_wq, &fws->fws_dequeue_work); +} + +static int brcmf_fws_enq(struct brcmf_fws_info *fws, + enum brcmf_fws_skb_state state, int fifo, + struct sk_buff *p) +{ + int prec = 2 * fifo; + u32 *qfull_stat = &fws->stats.delayq_full_error; + struct brcmf_fws_mac_descriptor *entry; + struct pktq *pq; + struct sk_buff_head *queue; + struct sk_buff *p_head; + struct sk_buff *p_tail; + u32 fr_new; + u32 fr_compare; + + entry = brcmf_skbcb(p)->mac; + if (entry == NULL) { + brcmf_err("no mac descriptor found for skb %p\n", p); + return -ENOENT; + } + + brcmf_dbg(DATA, "enter: fifo %d skb %p\n", fifo, p); + if (state == BRCMF_FWS_SKBSTATE_SUPPRESSED) { + prec += 1; + qfull_stat = &fws->stats.supprq_full_error; + + /* Fix out of order delivery of frames. Dont assume frame */ + /* can be inserted at the end, but look for correct position */ + pq = &entry->psq; + if (pktq_full(pq) || pktq_pfull(pq, prec)) { + *qfull_stat += 1; + return -ENFILE; + } + queue = &pq->q[prec].skblist; + + p_head = skb_peek(queue); + p_tail = skb_peek_tail(queue); + fr_new = brcmf_skb_htod_tag_get_field(p, FREERUN); + + while (p_head != p_tail) { + fr_compare = brcmf_skb_htod_tag_get_field(p_tail, + FREERUN); + /* be sure to handle wrap of 256 */ + if (((fr_new > fr_compare) && + ((fr_new - fr_compare) < 128)) || + ((fr_new < fr_compare) && + ((fr_compare - fr_new) > 128))) + break; + p_tail = skb_queue_prev(queue, p_tail); + } + /* Position found. Determine what to do */ + if (p_tail == NULL) { + /* empty list */ + __skb_queue_tail(queue, p); + } else { + fr_compare = brcmf_skb_htod_tag_get_field(p_tail, + FREERUN); + if (((fr_new > fr_compare) && + ((fr_new - fr_compare) < 128)) || + ((fr_new < fr_compare) && + ((fr_compare - fr_new) > 128))) { + /* After tail */ + __skb_queue_after(queue, p_tail, p); + } else { + /* Before tail */ + __skb_insert(p, p_tail->prev, p_tail, queue); + } + } + + /* Complete the counters and statistics */ + pq->len++; + if (pq->hi_prec < prec) + pq->hi_prec = (u8) prec; + } else if (brcmu_pktq_penq(&entry->psq, prec, p) == NULL) { + *qfull_stat += 1; + return -ENFILE; + } + + /* increment total enqueued packet count */ + fws->fifo_delay_map |= 1 << fifo; + fws->fifo_enqpkt[fifo]++; + + /* update the sk_buff state */ + brcmf_skbcb(p)->state = state; + + /* + * A packet has been pushed so update traffic + * availability bitmap, if applicable + */ + brcmf_fws_tim_update(fws, entry, fifo, true); + brcmf_fws_flow_control_check(fws, &entry->psq, + brcmf_skb_if_flags_get_field(p, INDEX)); + return 0; +} + +static struct sk_buff *brcmf_fws_deq(struct brcmf_fws_info *fws, int fifo) +{ + struct brcmf_fws_mac_descriptor *table; + struct brcmf_fws_mac_descriptor *entry; + struct sk_buff *p; + int num_nodes; + int node_pos; + int prec_out; + int pmsk; + int i; + + table = (struct brcmf_fws_mac_descriptor *)&fws->desc; + num_nodes = sizeof(fws->desc) / sizeof(struct brcmf_fws_mac_descriptor); + node_pos = fws->deq_node_pos[fifo]; + + for (i = 0; i < num_nodes; i++) { + entry = &table[(node_pos + i) % num_nodes]; + if (!entry->occupied || + brcmf_fws_macdesc_closed(fws, entry, fifo)) + continue; + + if (entry->suppressed) + pmsk = 2; + else + pmsk = 3; + p = brcmu_pktq_mdeq(&entry->psq, pmsk << (fifo * 2), &prec_out); + if (p == NULL) { + if (entry->suppressed) { + if (entry->suppr_transit_count) + continue; + entry->suppressed = false; + p = brcmu_pktq_mdeq(&entry->psq, + 1 << (fifo * 2), &prec_out); + } + } + if (p == NULL) + continue; + + brcmf_fws_macdesc_use_req_credit(entry, p); + + /* move dequeue position to ensure fair round-robin */ + fws->deq_node_pos[fifo] = (node_pos + i + 1) % num_nodes; + brcmf_fws_flow_control_check(fws, &entry->psq, + brcmf_skb_if_flags_get_field(p, + INDEX) + ); + /* + * A packet has been picked up, update traffic + * availability bitmap, if applicable + */ + brcmf_fws_tim_update(fws, entry, fifo, false); + + /* + * decrement total enqueued fifo packets and + * clear delay bitmap if done. + */ + fws->fifo_enqpkt[fifo]--; + if (fws->fifo_enqpkt[fifo] == 0) + fws->fifo_delay_map &= ~(1 << fifo); + goto done; + } + p = NULL; +done: + brcmf_dbg(DATA, "exit: fifo %d skb %p\n", fifo, p); + return p; +} + +static int brcmf_fws_txstatus_suppressed(struct brcmf_fws_info *fws, int fifo, + struct sk_buff *skb, u8 ifidx, + u32 genbit, u16 seq) +{ + struct brcmf_fws_mac_descriptor *entry = brcmf_skbcb(skb)->mac; + u32 hslot; + int ret; + + hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT); + + /* this packet was suppressed */ + if (!entry->suppressed) { + entry->suppressed = true; + entry->suppr_transit_count = entry->transit_count; + brcmf_dbg(DATA, "suppress %s: transit %d\n", + entry->name, entry->transit_count); + } + + entry->generation = genbit; + + brcmf_skb_htod_tag_set_field(skb, GENERATION, genbit); + brcmf_skbcb(skb)->htod_seq = seq; + if (brcmf_skb_htod_seq_get_field(skb, FROMFW)) { + brcmf_skb_htod_seq_set_field(skb, FROMDRV, 1); + brcmf_skb_htod_seq_set_field(skb, FROMFW, 0); + } else { + brcmf_skb_htod_seq_set_field(skb, FROMDRV, 0); + } + ret = brcmf_fws_enq(fws, BRCMF_FWS_SKBSTATE_SUPPRESSED, fifo, skb); + + if (ret != 0) { + /* suppress q is full drop this packet */ + brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb, true); + } else { + /* Mark suppressed to avoid a double free during wlfc cleanup */ + brcmf_fws_hanger_mark_suppressed(&fws->hanger, hslot); + } + + return ret; +} + +static int +brcmf_fws_txs_process(struct brcmf_fws_info *fws, u8 flags, u32 hslot, + u32 genbit, u16 seq) +{ + u32 fifo; + int ret; + bool remove_from_hanger = true; + struct sk_buff *skb; + struct brcmf_skbuff_cb *skcb; + struct brcmf_fws_mac_descriptor *entry = NULL; + u8 ifidx; + + brcmf_dbg(DATA, "flags %d\n", flags); + + if (flags == BRCMF_FWS_TXSTATUS_DISCARD) + fws->stats.txs_discard++; + else if (flags == BRCMF_FWS_TXSTATUS_CORE_SUPPRESS) { + fws->stats.txs_supp_core++; + remove_from_hanger = false; + } else if (flags == BRCMF_FWS_TXSTATUS_FW_PS_SUPPRESS) { + fws->stats.txs_supp_ps++; + remove_from_hanger = false; + } else if (flags == BRCMF_FWS_TXSTATUS_FW_TOSSED) + fws->stats.txs_tossed++; + else if (flags == BRCMF_FWS_TXSTATUS_HOST_TOSSED) + fws->stats.txs_host_tossed++; + else + brcmf_err("unexpected txstatus\n"); + + ret = brcmf_fws_hanger_poppkt(&fws->hanger, hslot, &skb, + remove_from_hanger); + if (ret != 0) { + brcmf_err("no packet in hanger slot: hslot=%d\n", hslot); + return ret; + } + + skcb = brcmf_skbcb(skb); + entry = skcb->mac; + if (WARN_ON(!entry)) { + brcmu_pkt_buf_free_skb(skb); + return -EINVAL; + } + entry->transit_count--; + if (entry->suppressed && entry->suppr_transit_count) + entry->suppr_transit_count--; + + brcmf_dbg(DATA, "%s flags %d htod %X seq %X\n", entry->name, flags, + skcb->htod, seq); + + /* pick up the implicit credit from this packet */ + fifo = brcmf_skb_htod_tag_get_field(skb, FIFO); + if ((fws->fcmode == BRCMF_FWS_FCMODE_IMPLIED_CREDIT) || + (brcmf_skb_if_flags_get_field(skb, REQ_CREDIT)) || + (flags == BRCMF_FWS_TXSTATUS_HOST_TOSSED)) { + brcmf_fws_return_credits(fws, fifo, 1); + brcmf_fws_schedule_deq(fws); + } + brcmf_fws_macdesc_return_req_credit(skb); + + if (brcmf_proto_hdrpull(fws->drvr, false, &ifidx, skb)) { + brcmu_pkt_buf_free_skb(skb); + return -EINVAL; + } + if (!remove_from_hanger) + ret = brcmf_fws_txstatus_suppressed(fws, fifo, skb, ifidx, + genbit, seq); + if (remove_from_hanger || ret) + brcmf_txfinalize(fws->drvr, skb, ifidx, true); + + return 0; +} + +static int brcmf_fws_fifocreditback_indicate(struct brcmf_fws_info *fws, + u8 *data) +{ + int i; + + if (fws->fcmode != BRCMF_FWS_FCMODE_EXPLICIT_CREDIT) { + brcmf_dbg(INFO, "ignored\n"); + return BRCMF_FWS_RET_OK_NOSCHEDULE; + } + + brcmf_dbg(DATA, "enter: data %pM\n", data); + brcmf_fws_lock(fws); + for (i = 0; i < BRCMF_FWS_FIFO_COUNT; i++) + brcmf_fws_return_credits(fws, i, data[i]); + + brcmf_dbg(DATA, "map: credit %x delay %x\n", fws->fifo_credit_map, + fws->fifo_delay_map); + brcmf_fws_unlock(fws); + return BRCMF_FWS_RET_OK_SCHEDULE; +} + +static int brcmf_fws_txstatus_indicate(struct brcmf_fws_info *fws, u8 *data) +{ + __le32 status_le; + __le16 seq_le; + u32 status; + u32 hslot; + u32 genbit; + u8 flags; + u16 seq; + + fws->stats.txs_indicate++; + memcpy(&status_le, data, sizeof(status_le)); + status = le32_to_cpu(status_le); + flags = brcmf_txstatus_get_field(status, FLAGS); + hslot = brcmf_txstatus_get_field(status, HSLOT); + genbit = brcmf_txstatus_get_field(status, GENERATION); + if (BRCMF_FWS_MODE_GET_REUSESEQ(fws->mode)) { + memcpy(&seq_le, &data[BRCMF_FWS_TYPE_PKTTAG_LEN], + sizeof(seq_le)); + seq = le16_to_cpu(seq_le); + } else { + seq = 0; + } + + brcmf_fws_lock(fws); + brcmf_fws_txs_process(fws, flags, hslot, genbit, seq); + brcmf_fws_unlock(fws); + return BRCMF_FWS_RET_OK_NOSCHEDULE; +} + +static int brcmf_fws_dbg_seqnum_check(struct brcmf_fws_info *fws, u8 *data) +{ + __le32 timestamp; + + memcpy(×tamp, &data[2], sizeof(timestamp)); + brcmf_dbg(CTL, "received: seq %d, timestamp %d\n", data[1], + le32_to_cpu(timestamp)); + return 0; +} + +static int brcmf_fws_notify_credit_map(struct brcmf_if *ifp, + const struct brcmf_event_msg *e, + void *data) +{ + struct brcmf_fws_info *fws = ifp->drvr->fws; + int i; + u8 *credits = data; + + if (e->datalen < BRCMF_FWS_FIFO_COUNT) { + brcmf_err("event payload too small (%d)\n", e->datalen); + return -EINVAL; + } + if (fws->creditmap_received) + return 0; + + fws->creditmap_received = true; + + brcmf_dbg(TRACE, "enter: credits %pM\n", credits); + brcmf_fws_lock(fws); + for (i = 0; i < ARRAY_SIZE(fws->fifo_credit); i++) { + if (*credits) + fws->fifo_credit_map |= 1 << i; + else + fws->fifo_credit_map &= ~(1 << i); + fws->fifo_credit[i] = *credits++; + } + brcmf_fws_schedule_deq(fws); + brcmf_fws_unlock(fws); + return 0; +} + +static int brcmf_fws_notify_bcmc_credit_support(struct brcmf_if *ifp, + const struct brcmf_event_msg *e, + void *data) +{ + struct brcmf_fws_info *fws = ifp->drvr->fws; + + brcmf_fws_lock(fws); + if (fws) + fws->bcmc_credit_check = true; + brcmf_fws_unlock(fws); + return 0; +} + +int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len, + struct sk_buff *skb) +{ + struct brcmf_skb_reorder_data *rd; + struct brcmf_fws_info *fws = drvr->fws; + u8 *signal_data; + s16 data_len; + u8 type; + u8 len; + u8 *data; + s32 status; + s32 err; + + brcmf_dbg(HDRS, "enter: ifidx %d, skblen %u, sig %d\n", + ifidx, skb->len, signal_len); + + WARN_ON(signal_len > skb->len); + + if (!signal_len) + return 0; + /* if flow control disabled, skip to packet data and leave */ + if (!fws->fw_signals) { + skb_pull(skb, signal_len); + return 0; + } + + fws->stats.header_pulls++; + data_len = signal_len; + signal_data = skb->data; + + status = BRCMF_FWS_RET_OK_NOSCHEDULE; + while (data_len > 0) { + /* extract tlv info */ + type = signal_data[0]; + + /* FILLER type is actually not a TLV, but + * a single byte that can be skipped. + */ + if (type == BRCMF_FWS_TYPE_FILLER) { + signal_data += 1; + data_len -= 1; + continue; + } + len = signal_data[1]; + data = signal_data + 2; + + brcmf_dbg(HDRS, "tlv type=%s (%d), len=%d (%d)\n", + brcmf_fws_get_tlv_name(type), type, len, + brcmf_fws_get_tlv_len(fws, type)); + + /* abort parsing when length invalid */ + if (data_len < len + 2) + break; + + if (len < brcmf_fws_get_tlv_len(fws, type)) + break; + + err = BRCMF_FWS_RET_OK_NOSCHEDULE; + switch (type) { + case BRCMF_FWS_TYPE_COMP_TXSTATUS: + break; + case BRCMF_FWS_TYPE_HOST_REORDER_RXPKTS: + rd = (struct brcmf_skb_reorder_data *)skb->cb; + rd->reorder = data; + break; + case BRCMF_FWS_TYPE_MACDESC_ADD: + case BRCMF_FWS_TYPE_MACDESC_DEL: + brcmf_fws_macdesc_indicate(fws, type, data); + break; + case BRCMF_FWS_TYPE_MAC_OPEN: + case BRCMF_FWS_TYPE_MAC_CLOSE: + err = brcmf_fws_macdesc_state_indicate(fws, type, data); + break; + case BRCMF_FWS_TYPE_INTERFACE_OPEN: + case BRCMF_FWS_TYPE_INTERFACE_CLOSE: + err = brcmf_fws_interface_state_indicate(fws, type, + data); + break; + case BRCMF_FWS_TYPE_MAC_REQUEST_CREDIT: + case BRCMF_FWS_TYPE_MAC_REQUEST_PACKET: + err = brcmf_fws_request_indicate(fws, type, data); + break; + case BRCMF_FWS_TYPE_TXSTATUS: + brcmf_fws_txstatus_indicate(fws, data); + break; + case BRCMF_FWS_TYPE_FIFO_CREDITBACK: + err = brcmf_fws_fifocreditback_indicate(fws, data); + break; + case BRCMF_FWS_TYPE_RSSI: + brcmf_fws_rssi_indicate(fws, *data); + break; + case BRCMF_FWS_TYPE_TRANS_ID: + brcmf_fws_dbg_seqnum_check(fws, data); + break; + case BRCMF_FWS_TYPE_PKTTAG: + case BRCMF_FWS_TYPE_PENDING_TRAFFIC_BMP: + default: + fws->stats.tlv_invalid_type++; + break; + } + if (err == BRCMF_FWS_RET_OK_SCHEDULE) + status = BRCMF_FWS_RET_OK_SCHEDULE; + signal_data += len + 2; + data_len -= len + 2; + } + + if (data_len != 0) + fws->stats.tlv_parse_failed++; + + if (status == BRCMF_FWS_RET_OK_SCHEDULE) + brcmf_fws_schedule_deq(fws); + + /* signalling processing result does + * not affect the actual ethernet packet. + */ + skb_pull(skb, signal_len); + + /* this may be a signal-only packet + */ + if (skb->len == 0) + fws->stats.header_only_pkt++; + + return 0; +} + +static u8 brcmf_fws_precommit_skb(struct brcmf_fws_info *fws, int fifo, + struct sk_buff *p) +{ + struct brcmf_skbuff_cb *skcb = brcmf_skbcb(p); + struct brcmf_fws_mac_descriptor *entry = skcb->mac; + u8 flags; + + if (skcb->state != BRCMF_FWS_SKBSTATE_SUPPRESSED) + brcmf_skb_htod_tag_set_field(p, GENERATION, entry->generation); + flags = BRCMF_FWS_HTOD_FLAG_PKTFROMHOST; + if (brcmf_skb_if_flags_get_field(p, REQUESTED)) { + /* + * Indicate that this packet is being sent in response to an + * explicit request from the firmware side. + */ + flags |= BRCMF_FWS_HTOD_FLAG_PKT_REQUESTED; + } + brcmf_skb_htod_tag_set_field(p, FLAGS, flags); + return brcmf_fws_hdrpush(fws, p); +} + +static void brcmf_fws_rollback_toq(struct brcmf_fws_info *fws, + struct sk_buff *skb, int fifo) +{ + struct brcmf_fws_mac_descriptor *entry; + struct sk_buff *pktout; + int qidx, hslot; + int rc = 0; + + entry = brcmf_skbcb(skb)->mac; + if (entry->occupied) { + qidx = 2 * fifo; + if (brcmf_skbcb(skb)->state == BRCMF_FWS_SKBSTATE_SUPPRESSED) + qidx++; + + pktout = brcmu_pktq_penq_head(&entry->psq, qidx, skb); + if (pktout == NULL) { + brcmf_err("%s queue %d full\n", entry->name, qidx); + rc = -ENOSPC; + } + } else { + brcmf_err("%s entry removed\n", entry->name); + rc = -ENOENT; + } + + if (rc) { + fws->stats.rollback_failed++; + hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT); + brcmf_fws_txs_process(fws, BRCMF_FWS_TXSTATUS_HOST_TOSSED, + hslot, 0, 0); + } else { + fws->stats.rollback_success++; + brcmf_fws_return_credits(fws, fifo, 1); + brcmf_fws_macdesc_return_req_credit(skb); + } +} + +static int brcmf_fws_borrow_credit(struct brcmf_fws_info *fws) +{ + int lender_ac; + + if (time_after(fws->borrow_defer_timestamp, jiffies)) { + fws->fifo_credit_map &= ~(1 << BRCMF_FWS_FIFO_AC_BE); + return -ENAVAIL; + } + + for (lender_ac = 0; lender_ac <= BRCMF_FWS_FIFO_AC_VO; lender_ac++) { + if (fws->fifo_credit[lender_ac]) { + fws->credits_borrowed[lender_ac]++; + fws->fifo_credit[lender_ac]--; + if (fws->fifo_credit[lender_ac] == 0) + fws->fifo_credit_map &= ~(1 << lender_ac); + fws->fifo_credit_map |= (1 << BRCMF_FWS_FIFO_AC_BE); + brcmf_dbg(DATA, "borrow credit from: %d\n", lender_ac); + return 0; + } + } + fws->fifo_credit_map &= ~(1 << BRCMF_FWS_FIFO_AC_BE); + return -ENAVAIL; +} + +static int brcmf_fws_commit_skb(struct brcmf_fws_info *fws, int fifo, + struct sk_buff *skb) +{ + struct brcmf_skbuff_cb *skcb = brcmf_skbcb(skb); + struct brcmf_fws_mac_descriptor *entry; + int rc; + u8 ifidx; + u8 data_offset; + + entry = skcb->mac; + if (IS_ERR(entry)) + return PTR_ERR(entry); + + data_offset = brcmf_fws_precommit_skb(fws, fifo, skb); + entry->transit_count++; + if (entry->suppressed) + entry->suppr_transit_count++; + ifidx = brcmf_skb_if_flags_get_field(skb, INDEX); + brcmf_fws_unlock(fws); + rc = brcmf_proto_txdata(fws->drvr, ifidx, data_offset, skb); + brcmf_fws_lock(fws); + brcmf_dbg(DATA, "%s flags %X htod %X bus_tx %d\n", entry->name, + skcb->if_flags, skcb->htod, rc); + if (rc < 0) { + entry->transit_count--; + if (entry->suppressed) + entry->suppr_transit_count--; + brcmf_proto_hdrpull(fws->drvr, false, &ifidx, skb); + goto rollback; + } + + fws->stats.pkt2bus++; + fws->stats.send_pkts[fifo]++; + if (brcmf_skb_if_flags_get_field(skb, REQUESTED)) + fws->stats.requested_sent[fifo]++; + + return rc; + +rollback: + brcmf_fws_rollback_toq(fws, skb, fifo); + return rc; +} + +static int brcmf_fws_assign_htod(struct brcmf_fws_info *fws, struct sk_buff *p, + int fifo) +{ + struct brcmf_skbuff_cb *skcb = brcmf_skbcb(p); + int rc, hslot; + + skcb->htod = 0; + skcb->htod_seq = 0; + hslot = brcmf_fws_hanger_get_free_slot(&fws->hanger); + brcmf_skb_htod_tag_set_field(p, HSLOT, hslot); + brcmf_skb_htod_tag_set_field(p, FREERUN, skcb->mac->seq[fifo]); + brcmf_skb_htod_tag_set_field(p, FIFO, fifo); + rc = brcmf_fws_hanger_pushpkt(&fws->hanger, p, hslot); + if (!rc) + skcb->mac->seq[fifo]++; + else + fws->stats.generic_error++; + return rc; +} + +int brcmf_fws_process_skb(struct brcmf_if *ifp, struct sk_buff *skb) +{ + struct brcmf_pub *drvr = ifp->drvr; + struct brcmf_fws_info *fws = drvr->fws; + struct brcmf_skbuff_cb *skcb = brcmf_skbcb(skb); + struct ethhdr *eh = (struct ethhdr *)(skb->data); + int fifo = BRCMF_FWS_FIFO_BCMC; + bool multicast = is_multicast_ether_addr(eh->h_dest); + int rc = 0; + + brcmf_dbg(DATA, "tx proto=0x%X\n", ntohs(eh->h_proto)); + /* determine the priority */ + if (!skb->priority) + skb->priority = cfg80211_classify8021d(skb, NULL); + + drvr->tx_multicast += !!multicast; + + if (fws->avoid_queueing) { + rc = brcmf_proto_txdata(drvr, ifp->ifidx, 0, skb); + if (rc < 0) + brcmf_txfinalize(drvr, skb, ifp->ifidx, false); + return rc; + } + + /* set control buffer information */ + skcb->if_flags = 0; + skcb->state = BRCMF_FWS_SKBSTATE_NEW; + brcmf_skb_if_flags_set_field(skb, INDEX, ifp->ifidx); + if (!multicast) + fifo = brcmf_fws_prio2fifo[skb->priority]; + + brcmf_fws_lock(fws); + if (fifo != BRCMF_FWS_FIFO_AC_BE && fifo < BRCMF_FWS_FIFO_BCMC) + fws->borrow_defer_timestamp = jiffies + + BRCMF_FWS_BORROW_DEFER_PERIOD; + + skcb->mac = brcmf_fws_macdesc_find(fws, ifp, eh->h_dest); + brcmf_dbg(DATA, "%s mac %pM multi %d fifo %d\n", skcb->mac->name, + eh->h_dest, multicast, fifo); + if (!brcmf_fws_assign_htod(fws, skb, fifo)) { + brcmf_fws_enq(fws, BRCMF_FWS_SKBSTATE_DELAYED, fifo, skb); + brcmf_fws_schedule_deq(fws); + } else { + brcmf_err("drop skb: no hanger slot\n"); + brcmf_txfinalize(drvr, skb, ifp->ifidx, false); + rc = -ENOMEM; + } + brcmf_fws_unlock(fws); + + return rc; +} + +void brcmf_fws_reset_interface(struct brcmf_if *ifp) +{ + struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc; + + brcmf_dbg(TRACE, "enter: idx=%d\n", ifp->bssidx); + if (!entry) + return; + + brcmf_fws_macdesc_init(entry, ifp->mac_addr, ifp->ifidx); +} + +void brcmf_fws_add_interface(struct brcmf_if *ifp) +{ + struct brcmf_fws_info *fws = ifp->drvr->fws; + struct brcmf_fws_mac_descriptor *entry; + + if (!ifp->ndev) + return; + + entry = &fws->desc.iface[ifp->ifidx]; + ifp->fws_desc = entry; + brcmf_fws_macdesc_init(entry, ifp->mac_addr, ifp->ifidx); + brcmf_fws_macdesc_set_name(fws, entry); + brcmu_pktq_init(&entry->psq, BRCMF_FWS_PSQ_PREC_COUNT, + BRCMF_FWS_PSQ_LEN); + brcmf_dbg(TRACE, "added %s\n", entry->name); +} + +void brcmf_fws_del_interface(struct brcmf_if *ifp) +{ + struct brcmf_fws_mac_descriptor *entry = ifp->fws_desc; + + if (!entry) + return; + + brcmf_fws_lock(ifp->drvr->fws); + ifp->fws_desc = NULL; + brcmf_dbg(TRACE, "deleting %s\n", entry->name); + brcmf_fws_macdesc_deinit(entry); + brcmf_fws_cleanup(ifp->drvr->fws, ifp->ifidx); + brcmf_fws_unlock(ifp->drvr->fws); +} + +static void brcmf_fws_dequeue_worker(struct work_struct *worker) +{ + struct brcmf_fws_info *fws; + struct brcmf_pub *drvr; + struct sk_buff *skb; + int fifo; + u32 hslot; + u32 ifidx; + int ret; + + fws = container_of(worker, struct brcmf_fws_info, fws_dequeue_work); + drvr = fws->drvr; + + brcmf_fws_lock(fws); + for (fifo = BRCMF_FWS_FIFO_BCMC; fifo >= 0 && !fws->bus_flow_blocked; + fifo--) { + if (!brcmf_fws_fc_active(fws)) { + while ((skb = brcmf_fws_deq(fws, fifo)) != NULL) { + hslot = brcmf_skb_htod_tag_get_field(skb, + HSLOT); + brcmf_fws_hanger_poppkt(&fws->hanger, hslot, + &skb, true); + ifidx = brcmf_skb_if_flags_get_field(skb, + INDEX); + /* Use proto layer to send data frame */ + brcmf_fws_unlock(fws); + ret = brcmf_proto_txdata(drvr, ifidx, 0, skb); + brcmf_fws_lock(fws); + if (ret < 0) + brcmf_txfinalize(drvr, skb, ifidx, + false); + if (fws->bus_flow_blocked) + break; + } + continue; + } + while ((fws->fifo_credit[fifo]) || ((!fws->bcmc_credit_check) && + (fifo == BRCMF_FWS_FIFO_BCMC))) { + skb = brcmf_fws_deq(fws, fifo); + if (!skb) + break; + fws->fifo_credit[fifo]--; + if (brcmf_fws_commit_skb(fws, fifo, skb)) + break; + if (fws->bus_flow_blocked) + break; + } + if ((fifo == BRCMF_FWS_FIFO_AC_BE) && + (fws->fifo_credit[fifo] == 0) && + (!fws->bus_flow_blocked)) { + while (brcmf_fws_borrow_credit(fws) == 0) { + skb = brcmf_fws_deq(fws, fifo); + if (!skb) { + brcmf_fws_return_credits(fws, fifo, 1); + break; + } + if (brcmf_fws_commit_skb(fws, fifo, skb)) + break; + if (fws->bus_flow_blocked) + break; + } + } + } + brcmf_fws_unlock(fws); +} + +int brcmf_fws_init(struct brcmf_pub *drvr) +{ + struct brcmf_fws_info *fws; + u32 tlv = BRCMF_FWS_FLAGS_RSSI_SIGNALS; + int rc; + u32 mode; + + drvr->fws = kzalloc(sizeof(*(drvr->fws)), GFP_KERNEL); + if (!drvr->fws) { + rc = -ENOMEM; + goto fail; + } + + fws = drvr->fws; + + spin_lock_init(&fws->spinlock); + + /* set linkage back */ + fws->drvr = drvr; + fws->fcmode = fcmode; + + if ((drvr->bus_if->always_use_fws_queue == false) && + (fcmode == BRCMF_FWS_FCMODE_NONE)) { + fws->avoid_queueing = true; + brcmf_dbg(INFO, "FWS queueing will be avoided\n"); + return 0; + } + + fws->fws_wq = create_singlethread_workqueue("brcmf_fws_wq"); + if (fws->fws_wq == NULL) { + brcmf_err("workqueue creation failed\n"); + rc = -EBADF; + goto fail; + } + INIT_WORK(&fws->fws_dequeue_work, brcmf_fws_dequeue_worker); + + /* enable firmware signalling if fcmode active */ + if (fws->fcmode != BRCMF_FWS_FCMODE_NONE) + tlv |= BRCMF_FWS_FLAGS_XONXOFF_SIGNALS | + BRCMF_FWS_FLAGS_CREDIT_STATUS_SIGNALS | + BRCMF_FWS_FLAGS_HOST_PROPTXSTATUS_ACTIVE | + BRCMF_FWS_FLAGS_HOST_RXREORDER_ACTIVE; + + rc = brcmf_fweh_register(drvr, BRCMF_E_FIFO_CREDIT_MAP, + brcmf_fws_notify_credit_map); + if (rc < 0) { + brcmf_err("register credit map handler failed\n"); + goto fail; + } + rc = brcmf_fweh_register(drvr, BRCMF_E_BCMC_CREDIT_SUPPORT, + brcmf_fws_notify_bcmc_credit_support); + if (rc < 0) { + brcmf_err("register bcmc credit handler failed\n"); + brcmf_fweh_unregister(drvr, BRCMF_E_FIFO_CREDIT_MAP); + goto fail; + } + + /* Setting the iovar may fail if feature is unsupported + * so leave the rc as is so driver initialization can + * continue. Set mode back to none indicating not enabled. + */ + fws->fw_signals = true; + if (brcmf_fil_iovar_int_set(drvr->iflist[0], "tlv", tlv)) { + brcmf_err("failed to set bdcv2 tlv signaling\n"); + fws->fcmode = BRCMF_FWS_FCMODE_NONE; + fws->fw_signals = false; + } + + if (brcmf_fil_iovar_int_set(drvr->iflist[0], "ampdu_hostreorder", 1)) + brcmf_dbg(INFO, "enabling AMPDU host-reorder failed\n"); + + /* Enable seq number reuse, if supported */ + if (brcmf_fil_iovar_int_get(drvr->iflist[0], "wlfc_mode", &mode) == 0) { + if (BRCMF_FWS_MODE_GET_REUSESEQ(mode)) { + mode = 0; + BRCMF_FWS_MODE_SET_REUSESEQ(mode, 1); + if (brcmf_fil_iovar_int_set(drvr->iflist[0], + "wlfc_mode", mode) == 0) { + BRCMF_FWS_MODE_SET_REUSESEQ(fws->mode, 1); + } + } + } + + brcmf_fws_hanger_init(&fws->hanger); + brcmf_fws_macdesc_init(&fws->desc.other, NULL, 0); + brcmf_fws_macdesc_set_name(fws, &fws->desc.other); + brcmu_pktq_init(&fws->desc.other.psq, BRCMF_FWS_PSQ_PREC_COUNT, + BRCMF_FWS_PSQ_LEN); + + /* create debugfs file for statistics */ + brcmf_debugfs_create_fws_stats(drvr, &fws->stats); + + brcmf_dbg(INFO, "%s bdcv2 tlv signaling [%x]\n", + fws->fw_signals ? "enabled" : "disabled", tlv); + return 0; + +fail: + brcmf_fws_deinit(drvr); + return rc; +} + +void brcmf_fws_deinit(struct brcmf_pub *drvr) +{ + struct brcmf_fws_info *fws = drvr->fws; + + if (!fws) + return; + + if (drvr->fws->fws_wq) + destroy_workqueue(drvr->fws->fws_wq); + + /* cleanup */ + brcmf_fws_lock(fws); + brcmf_fws_cleanup(fws, -1); + drvr->fws = NULL; + brcmf_fws_unlock(fws); + + /* free top structure */ + kfree(fws); +} + +bool brcmf_fws_fc_active(struct brcmf_fws_info *fws) +{ + if (!fws->creditmap_received) + return false; + + return fws->fcmode != BRCMF_FWS_FCMODE_NONE; +} + +void brcmf_fws_bustxfail(struct brcmf_fws_info *fws, struct sk_buff *skb) +{ + u32 hslot; + + if (brcmf_skbcb(skb)->state == BRCMF_FWS_SKBSTATE_TIM) { + brcmu_pkt_buf_free_skb(skb); + return; + } + brcmf_fws_lock(fws); + hslot = brcmf_skb_htod_tag_get_field(skb, HSLOT); + brcmf_fws_txs_process(fws, BRCMF_FWS_TXSTATUS_HOST_TOSSED, hslot, 0, 0); + brcmf_fws_unlock(fws); +} + +void brcmf_fws_bus_blocked(struct brcmf_pub *drvr, bool flow_blocked) +{ + struct brcmf_fws_info *fws = drvr->fws; + + fws->bus_flow_blocked = flow_blocked; + if (!flow_blocked) + brcmf_fws_schedule_deq(fws); + else + fws->stats.bus_flow_block++; +} diff --git a/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.h b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.h new file mode 100644 index 00000000000..9fc860910bd --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/fwsignal.h @@ -0,0 +1,34 @@ +/* + * Copyright (c) 2012 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + + +#ifndef FWSIGNAL_H_ +#define FWSIGNAL_H_ + +int brcmf_fws_init(struct brcmf_pub *drvr); +void brcmf_fws_deinit(struct brcmf_pub *drvr); +bool brcmf_fws_fc_active(struct brcmf_fws_info *fws); +int brcmf_fws_hdrpull(struct brcmf_pub *drvr, int ifidx, s16 signal_len, + struct sk_buff *skb); +int brcmf_fws_process_skb(struct brcmf_if *ifp, struct sk_buff *skb); + +void brcmf_fws_reset_interface(struct brcmf_if *ifp); +void brcmf_fws_add_interface(struct brcmf_if *ifp); +void brcmf_fws_del_interface(struct brcmf_if *ifp); +void brcmf_fws_bustxfail(struct brcmf_fws_info *fws, struct sk_buff *skb); +void brcmf_fws_bus_blocked(struct brcmf_pub *drvr, bool flow_blocked); + +#endif /* FWSIGNAL_H_ */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/brcm80211/brcmfmac/p2p.c new file mode 100644 index 00000000000..f3445ac627e --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/p2p.c @@ -0,0 +1,2424 @@ +/* + * Copyright (c) 2012 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#include <linux/slab.h> +#include <linux/netdevice.h> +#include <linux/etherdevice.h> +#include <net/cfg80211.h> + +#include <brcmu_wifi.h> +#include <brcmu_utils.h> +#include <defs.h> +#include <dhd.h> +#include <dhd_dbg.h> +#include "fwil.h" +#include "fwil_types.h" +#include "p2p.h" +#include "wl_cfg80211.h" + +/* parameters used for p2p escan */ +#define P2PAPI_SCAN_NPROBES 1 +#define P2PAPI_SCAN_DWELL_TIME_MS 80 +#define P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS 40 +#define P2PAPI_SCAN_HOME_TIME_MS 60 +#define P2PAPI_SCAN_NPROBS_TIME_MS 30 +#define P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS 100 +#define WL_SCAN_CONNECT_DWELL_TIME_MS 200 +#define WL_SCAN_JOIN_PROBE_INTERVAL_MS 20 + +#define BRCMF_P2P_WILDCARD_SSID "DIRECT-" +#define BRCMF_P2P_WILDCARD_SSID_LEN (sizeof(BRCMF_P2P_WILDCARD_SSID) - 1) + +#define SOCIAL_CHAN_1 1 +#define SOCIAL_CHAN_2 6 +#define SOCIAL_CHAN_3 11 +#define IS_P2P_SOCIAL_CHANNEL(channel) ((channel == SOCIAL_CHAN_1) || \ + (channel == SOCIAL_CHAN_2) || \ + (channel == SOCIAL_CHAN_3)) +#define BRCMF_P2P_TEMP_CHAN SOCIAL_CHAN_3 +#define SOCIAL_CHAN_CNT 3 +#define AF_PEER_SEARCH_CNT 2 + +#define BRCMF_SCB_TIMEOUT_VALUE 20 + +#define P2P_VER 9 /* P2P version: 9=WiFi P2P v1.0 */ +#define P2P_PUB_AF_CATEGORY 0x04 +#define P2P_PUB_AF_ACTION 0x09 +#define P2P_AF_CATEGORY 0x7f +#define P2P_OUI "\x50\x6F\x9A" /* P2P OUI */ +#define P2P_OUI_LEN 3 /* P2P OUI length */ + +/* Action Frame Constants */ +#define DOT11_ACTION_HDR_LEN 2 /* action frame category + action */ +#define DOT11_ACTION_CAT_OFF 0 /* category offset */ +#define DOT11_ACTION_ACT_OFF 1 /* action offset */ + +#define P2P_AF_DWELL_TIME 200 +#define P2P_AF_MIN_DWELL_TIME 100 +#define P2P_AF_MED_DWELL_TIME 400 +#define P2P_AF_LONG_DWELL_TIME 1000 +#define P2P_AF_TX_MAX_RETRY 1 +#define P2P_AF_MAX_WAIT_TIME 2000 +#define P2P_INVALID_CHANNEL -1 +#define P2P_CHANNEL_SYNC_RETRY 5 +#define P2P_AF_FRM_SCAN_MAX_WAIT 1500 +#define P2P_DEFAULT_SLEEP_TIME_VSDB 200 + +/* WiFi P2P Public Action Frame OUI Subtypes */ +#define P2P_PAF_GON_REQ 0 /* Group Owner Negotiation Req */ +#define P2P_PAF_GON_RSP 1 /* Group Owner Negotiation Rsp */ +#define P2P_PAF_GON_CONF 2 /* Group Owner Negotiation Confirm */ +#define P2P_PAF_INVITE_REQ 3 /* P2P Invitation Request */ +#define P2P_PAF_INVITE_RSP 4 /* P2P Invitation Response */ +#define P2P_PAF_DEVDIS_REQ 5 /* Device Discoverability Request */ +#define P2P_PAF_DEVDIS_RSP 6 /* Device Discoverability Response */ +#define P2P_PAF_PROVDIS_REQ 7 /* Provision Discovery Request */ +#define P2P_PAF_PROVDIS_RSP 8 /* Provision Discovery Response */ +#define P2P_PAF_SUBTYPE_INVALID 255 /* Invalid Subtype */ + +/* WiFi P2P Action Frame OUI Subtypes */ +#define P2P_AF_NOTICE_OF_ABSENCE 0 /* Notice of Absence */ +#define P2P_AF_PRESENCE_REQ 1 /* P2P Presence Request */ +#define P2P_AF_PRESENCE_RSP 2 /* P2P Presence Response */ +#define P2P_AF_GO_DISC_REQ 3 /* GO Discoverability Request */ + +/* P2P Service Discovery related */ +#define P2PSD_ACTION_CATEGORY 0x04 /* Public action frame */ +#define P2PSD_ACTION_ID_GAS_IREQ 0x0a /* GAS Initial Request AF */ +#define P2PSD_ACTION_ID_GAS_IRESP 0x0b /* GAS Initial Response AF */ +#define P2PSD_ACTION_ID_GAS_CREQ 0x0c /* GAS Comback Request AF */ +#define P2PSD_ACTION_ID_GAS_CRESP 0x0d /* GAS Comback Response AF */ + +/** + * struct brcmf_p2p_disc_st_le - set discovery state in firmware. + * + * @state: requested discovery state (see enum brcmf_p2p_disc_state). + * @chspec: channel parameter for %WL_P2P_DISC_ST_LISTEN state. + * @dwell: dwell time in ms for %WL_P2P_DISC_ST_LISTEN state. + */ +struct brcmf_p2p_disc_st_le { + u8 state; + __le16 chspec; + __le16 dwell; +}; + +/** + * enum brcmf_p2p_disc_state - P2P discovery state values + * + * @WL_P2P_DISC_ST_SCAN: P2P discovery with wildcard SSID and P2P IE. + * @WL_P2P_DISC_ST_LISTEN: P2P discovery off-channel for specified time. + * @WL_P2P_DISC_ST_SEARCH: P2P discovery with P2P wildcard SSID and P2P IE. + */ +enum brcmf_p2p_disc_state { + WL_P2P_DISC_ST_SCAN, + WL_P2P_DISC_ST_LISTEN, + WL_P2P_DISC_ST_SEARCH +}; + +/** + * struct brcmf_p2p_scan_le - P2P specific scan request. + * + * @type: type of scan method requested (values: 'E' or 'S'). + * @reserved: reserved (ignored). + * @eparams: parameters used for type 'E'. + * @sparams: parameters used for type 'S'. + */ +struct brcmf_p2p_scan_le { + u8 type; + u8 reserved[3]; + union { + struct brcmf_escan_params_le eparams; + struct brcmf_scan_params_le sparams; + }; +}; + +/** + * struct brcmf_p2p_pub_act_frame - WiFi P2P Public Action Frame + * + * @category: P2P_PUB_AF_CATEGORY + * @action: P2P_PUB_AF_ACTION + * @oui[3]: P2P_OUI + * @oui_type: OUI type - P2P_VER + * @subtype: OUI subtype - P2P_TYPE_* + * @dialog_token: nonzero, identifies req/rsp transaction + * @elts[1]: Variable length information elements. + */ +struct brcmf_p2p_pub_act_frame { + u8 category; + u8 action; + u8 oui[3]; + u8 oui_type; + u8 subtype; + u8 dialog_token; + u8 elts[1]; +}; + +/** + * struct brcmf_p2p_action_frame - WiFi P2P Action Frame + * + * @category: P2P_AF_CATEGORY + * @OUI[3]: OUI - P2P_OUI + * @type: OUI Type - P2P_VER + * @subtype: OUI Subtype - P2P_AF_* + * @dialog_token: nonzero, identifies req/resp tranaction + * @elts[1]: Variable length information elements. + */ +struct brcmf_p2p_action_frame { + u8 category; + u8 oui[3]; + u8 type; + u8 subtype; + u8 dialog_token; + u8 elts[1]; +}; + +/** + * struct brcmf_p2psd_gas_pub_act_frame - Wi-Fi GAS Public Action Frame + * + * @category: 0x04 Public Action Frame + * @action: 0x6c Advertisement Protocol + * @dialog_token: nonzero, identifies req/rsp transaction + * @query_data[1]: Query Data. SD gas ireq SD gas iresp + */ +struct brcmf_p2psd_gas_pub_act_frame { + u8 category; + u8 action; + u8 dialog_token; + u8 query_data[1]; +}; + +/** + * struct brcmf_config_af_params - Action Frame Parameters for tx. + * + * @mpc_onoff: To make sure to send successfully action frame, we have to + * turn off mpc 0: off, 1: on, (-1): do nothing + * @search_channel: 1: search peer's channel to send af + * extra_listen: keep the dwell time to get af response frame. + */ +struct brcmf_config_af_params { + s32 mpc_onoff; + bool search_channel; + bool extra_listen; +}; + +/** + * brcmf_p2p_is_pub_action() - true if p2p public type frame. + * + * @frame: action frame data. + * @frame_len: length of action frame data. + * + * Determine if action frame is p2p public action type + */ +static bool brcmf_p2p_is_pub_action(void *frame, u32 frame_len) +{ + struct brcmf_p2p_pub_act_frame *pact_frm; + + if (frame == NULL) + return false; + + pact_frm = (struct brcmf_p2p_pub_act_frame *)frame; + if (frame_len < sizeof(struct brcmf_p2p_pub_act_frame) - 1) + return false; + + if (pact_frm->category == P2P_PUB_AF_CATEGORY && + pact_frm->action == P2P_PUB_AF_ACTION && + pact_frm->oui_type == P2P_VER && + memcmp(pact_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0) + return true; + + return false; +} + +/** + * brcmf_p2p_is_p2p_action() - true if p2p action type frame. + * + * @frame: action frame data. + * @frame_len: length of action frame data. + * + * Determine if action frame is p2p action type + */ +static bool brcmf_p2p_is_p2p_action(void *frame, u32 frame_len) +{ + struct brcmf_p2p_action_frame *act_frm; + + if (frame == NULL) + return false; + + act_frm = (struct brcmf_p2p_action_frame *)frame; + if (frame_len < sizeof(struct brcmf_p2p_action_frame) - 1) + return false; + + if (act_frm->category == P2P_AF_CATEGORY && + act_frm->type == P2P_VER && + memcmp(act_frm->oui, P2P_OUI, P2P_OUI_LEN) == 0) + return true; + + return false; +} + +/** + * brcmf_p2p_is_gas_action() - true if p2p gas action type frame. + * + * @frame: action frame data. + * @frame_len: length of action frame data. + * + * Determine if action frame is p2p gas action type + */ +static bool brcmf_p2p_is_gas_action(void *frame, u32 frame_len) +{ + struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm; + + if (frame == NULL) + return false; + + sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame; + if (frame_len < sizeof(struct brcmf_p2psd_gas_pub_act_frame) - 1) + return false; + + if (sd_act_frm->category != P2PSD_ACTION_CATEGORY) + return false; + + if (sd_act_frm->action == P2PSD_ACTION_ID_GAS_IREQ || + sd_act_frm->action == P2PSD_ACTION_ID_GAS_IRESP || + sd_act_frm->action == P2PSD_ACTION_ID_GAS_CREQ || + sd_act_frm->action == P2PSD_ACTION_ID_GAS_CRESP) + return true; + + return false; +} + +/** + * brcmf_p2p_print_actframe() - debug print routine. + * + * @tx: Received or to be transmitted + * @frame: action frame data. + * @frame_len: length of action frame data. + * + * Print information about the p2p action frame + */ + +#ifdef DEBUG + +static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len) +{ + struct brcmf_p2p_pub_act_frame *pact_frm; + struct brcmf_p2p_action_frame *act_frm; + struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm; + + if (!frame || frame_len <= 2) + return; + + if (brcmf_p2p_is_pub_action(frame, frame_len)) { + pact_frm = (struct brcmf_p2p_pub_act_frame *)frame; + switch (pact_frm->subtype) { + case P2P_PAF_GON_REQ: + brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Req Frame\n", + (tx) ? "TX" : "RX"); + break; + case P2P_PAF_GON_RSP: + brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Rsp Frame\n", + (tx) ? "TX" : "RX"); + break; + case P2P_PAF_GON_CONF: + brcmf_dbg(TRACE, "%s P2P Group Owner Negotiation Confirm Frame\n", + (tx) ? "TX" : "RX"); + break; + case P2P_PAF_INVITE_REQ: + brcmf_dbg(TRACE, "%s P2P Invitation Request Frame\n", + (tx) ? "TX" : "RX"); + break; + case P2P_PAF_INVITE_RSP: + brcmf_dbg(TRACE, "%s P2P Invitation Response Frame\n", + (tx) ? "TX" : "RX"); + break; + case P2P_PAF_DEVDIS_REQ: + brcmf_dbg(TRACE, "%s P2P Device Discoverability Request Frame\n", + (tx) ? "TX" : "RX"); + break; + case P2P_PAF_DEVDIS_RSP: + brcmf_dbg(TRACE, "%s P2P Device Discoverability Response Frame\n", + (tx) ? "TX" : "RX"); + break; + case P2P_PAF_PROVDIS_REQ: + brcmf_dbg(TRACE, "%s P2P Provision Discovery Request Frame\n", + (tx) ? "TX" : "RX"); + break; + case P2P_PAF_PROVDIS_RSP: + brcmf_dbg(TRACE, "%s P2P Provision Discovery Response Frame\n", + (tx) ? "TX" : "RX"); + break; + default: + brcmf_dbg(TRACE, "%s Unknown P2P Public Action Frame\n", + (tx) ? "TX" : "RX"); + break; + } + } else if (brcmf_p2p_is_p2p_action(frame, frame_len)) { + act_frm = (struct brcmf_p2p_action_frame *)frame; + switch (act_frm->subtype) { + case P2P_AF_NOTICE_OF_ABSENCE: + brcmf_dbg(TRACE, "%s P2P Notice of Absence Frame\n", + (tx) ? "TX" : "RX"); + break; + case P2P_AF_PRESENCE_REQ: + brcmf_dbg(TRACE, "%s P2P Presence Request Frame\n", + (tx) ? "TX" : "RX"); + break; + case P2P_AF_PRESENCE_RSP: + brcmf_dbg(TRACE, "%s P2P Presence Response Frame\n", + (tx) ? "TX" : "RX"); + break; + case P2P_AF_GO_DISC_REQ: + brcmf_dbg(TRACE, "%s P2P Discoverability Request Frame\n", + (tx) ? "TX" : "RX"); + break; + default: + brcmf_dbg(TRACE, "%s Unknown P2P Action Frame\n", + (tx) ? "TX" : "RX"); + } + + } else if (brcmf_p2p_is_gas_action(frame, frame_len)) { + sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame; + switch (sd_act_frm->action) { + case P2PSD_ACTION_ID_GAS_IREQ: + brcmf_dbg(TRACE, "%s P2P GAS Initial Request\n", + (tx) ? "TX" : "RX"); + break; + case P2PSD_ACTION_ID_GAS_IRESP: + brcmf_dbg(TRACE, "%s P2P GAS Initial Response\n", + (tx) ? "TX" : "RX"); + break; + case P2PSD_ACTION_ID_GAS_CREQ: + brcmf_dbg(TRACE, "%s P2P GAS Comback Request\n", + (tx) ? "TX" : "RX"); + break; + case P2PSD_ACTION_ID_GAS_CRESP: + brcmf_dbg(TRACE, "%s P2P GAS Comback Response\n", + (tx) ? "TX" : "RX"); + break; + default: + brcmf_dbg(TRACE, "%s Unknown P2P GAS Frame\n", + (tx) ? "TX" : "RX"); + break; + } + } +} + +#else + +static void brcmf_p2p_print_actframe(bool tx, void *frame, u32 frame_len) +{ +} + +#endif + + +/** + * brcmf_p2p_set_firmware() - prepare firmware for peer-to-peer operation. + * + * @ifp: ifp to use for iovars (primary). + * @p2p_mac: mac address to configure for p2p_da_override + */ +static int brcmf_p2p_set_firmware(struct brcmf_if *ifp, u8 *p2p_mac) +{ + s32 ret = 0; + + brcmf_fil_cmd_int_set(ifp, BRCMF_C_DOWN, 1); + brcmf_fil_iovar_int_set(ifp, "apsta", 1); + brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 1); + + /* In case of COB type, firmware has default mac address + * After Initializing firmware, we have to set current mac address to + * firmware for P2P device address + */ + ret = brcmf_fil_iovar_data_set(ifp, "p2p_da_override", p2p_mac, + ETH_ALEN); + if (ret) + brcmf_err("failed to update device address ret %d\n", ret); + + return ret; +} + +/** + * brcmf_p2p_generate_bss_mac() - derive mac addresses for P2P. + * + * @p2p: P2P specific data. + * @dev_addr: optional device address. + * + * P2P needs mac addresses for P2P device and interface. If no device + * address it specified, these are derived from the primary net device, ie. + * the permanent ethernet address of the device. + */ +static void brcmf_p2p_generate_bss_mac(struct brcmf_p2p_info *p2p, u8 *dev_addr) +{ + struct brcmf_if *pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp; + bool local_admin = false; + + if (!dev_addr || is_zero_ether_addr(dev_addr)) { + dev_addr = pri_ifp->mac_addr; + local_admin = true; + } + + /* Generate the P2P Device Address. This consists of the device's + * primary MAC address with the locally administered bit set. + */ + memcpy(p2p->dev_addr, dev_addr, ETH_ALEN); + if (local_admin) + p2p->dev_addr[0] |= 0x02; + + /* Generate the P2P Interface Address. If the discovery and connection + * BSSCFGs need to simultaneously co-exist, then this address must be + * different from the P2P Device Address, but also locally administered. + */ + memcpy(p2p->int_addr, p2p->dev_addr, ETH_ALEN); + p2p->int_addr[0] |= 0x02; + p2p->int_addr[4] ^= 0x80; +} + +/** + * brcmf_p2p_scan_is_p2p_request() - is cfg80211 scan request a P2P scan. + * + * @request: the scan request as received from cfg80211. + * + * returns true if one of the ssids in the request matches the + * P2P wildcard ssid; otherwise returns false. + */ +static bool brcmf_p2p_scan_is_p2p_request(struct cfg80211_scan_request *request) +{ + struct cfg80211_ssid *ssids = request->ssids; + int i; + + for (i = 0; i < request->n_ssids; i++) { + if (ssids[i].ssid_len != BRCMF_P2P_WILDCARD_SSID_LEN) + continue; + + brcmf_dbg(INFO, "comparing ssid \"%s\"", ssids[i].ssid); + if (!memcmp(BRCMF_P2P_WILDCARD_SSID, ssids[i].ssid, + BRCMF_P2P_WILDCARD_SSID_LEN)) + return true; + } + return false; +} + +/** + * brcmf_p2p_set_discover_state - set discover state in firmware. + * + * @ifp: low-level interface object. + * @state: discover state to set. + * @chanspec: channel parameters (for state @WL_P2P_DISC_ST_LISTEN only). + * @listen_ms: duration to listen (for state @WL_P2P_DISC_ST_LISTEN only). + */ +static s32 brcmf_p2p_set_discover_state(struct brcmf_if *ifp, u8 state, + u16 chanspec, u16 listen_ms) +{ + struct brcmf_p2p_disc_st_le discover_state; + s32 ret = 0; + brcmf_dbg(TRACE, "enter\n"); + + discover_state.state = state; + discover_state.chspec = cpu_to_le16(chanspec); + discover_state.dwell = cpu_to_le16(listen_ms); + ret = brcmf_fil_bsscfg_data_set(ifp, "p2p_state", &discover_state, + sizeof(discover_state)); + return ret; +} + +/** + * brcmf_p2p_deinit_discovery() - disable P2P device discovery. + * + * @p2p: P2P specific data. + * + * Resets the discovery state and disables it in firmware. + */ +static s32 brcmf_p2p_deinit_discovery(struct brcmf_p2p_info *p2p) +{ + struct brcmf_cfg80211_vif *vif; + + brcmf_dbg(TRACE, "enter\n"); + + /* Set the discovery state to SCAN */ + vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; + (void)brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0); + + /* Disable P2P discovery in the firmware */ + vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif; + (void)brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 0); + + return 0; +} + +/** + * brcmf_p2p_enable_discovery() - initialize and configure discovery. + * + * @p2p: P2P specific data. + * + * Initializes the discovery device and configure the virtual interface. + */ +static int brcmf_p2p_enable_discovery(struct brcmf_p2p_info *p2p) +{ + struct brcmf_cfg80211_vif *vif; + s32 ret = 0; + + brcmf_dbg(TRACE, "enter\n"); + vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; + if (!vif) { + brcmf_err("P2P config device not available\n"); + ret = -EPERM; + goto exit; + } + + if (test_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status)) { + brcmf_dbg(INFO, "P2P config device already configured\n"); + goto exit; + } + + /* Re-initialize P2P Discovery in the firmware */ + vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif; + ret = brcmf_fil_iovar_int_set(vif->ifp, "p2p_disc", 1); + if (ret < 0) { + brcmf_err("set p2p_disc error\n"); + goto exit; + } + vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; + ret = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_SCAN, 0, 0); + if (ret < 0) { + brcmf_err("unable to set WL_P2P_DISC_ST_SCAN\n"); + goto exit; + } + + /* + * Set wsec to any non-zero value in the discovery bsscfg + * to ensure our P2P probe responses have the privacy bit + * set in the 802.11 WPA IE. Some peer devices may not + * initiate WPS with us if this bit is not set. + */ + ret = brcmf_fil_bsscfg_int_set(vif->ifp, "wsec", AES_ENABLED); + if (ret < 0) { + brcmf_err("wsec error %d\n", ret); + goto exit; + } + + set_bit(BRCMF_P2P_STATUS_ENABLED, &p2p->status); +exit: + return ret; +} + +/** + * brcmf_p2p_escan() - initiate a P2P scan. + * + * @p2p: P2P specific data. + * @num_chans: number of channels to scan. + * @chanspecs: channel parameters for @num_chans channels. + * @search_state: P2P discover state to use. + * @action: scan action to pass to firmware. + * @bss_type: type of P2P bss. + */ +static s32 brcmf_p2p_escan(struct brcmf_p2p_info *p2p, u32 num_chans, + u16 chanspecs[], s32 search_state, u16 action, + enum p2p_bss_type bss_type) +{ + s32 ret = 0; + s32 memsize = offsetof(struct brcmf_p2p_scan_le, + eparams.params_le.channel_list); + s32 nprobes; + s32 active; + u32 i; + u8 *memblk; + struct brcmf_cfg80211_vif *vif; + struct brcmf_p2p_scan_le *p2p_params; + struct brcmf_scan_params_le *sparams; + struct brcmf_ssid ssid; + + memsize += num_chans * sizeof(__le16); + memblk = kzalloc(memsize, GFP_KERNEL); + if (!memblk) + return -ENOMEM; + + vif = p2p->bss_idx[bss_type].vif; + if (vif == NULL) { + brcmf_err("no vif for bss type %d\n", bss_type); + ret = -EINVAL; + goto exit; + } + + switch (search_state) { + case WL_P2P_DISC_ST_SEARCH: + /* + * If we in SEARCH STATE, we don't need to set SSID explictly + * because dongle use P2P WILDCARD internally by default + */ + /* use null ssid */ + ssid.SSID_len = 0; + memset(ssid.SSID, 0, sizeof(ssid.SSID)); + break; + case WL_P2P_DISC_ST_SCAN: + /* + * wpa_supplicant has p2p_find command with type social or + * progressive. For progressive, we need to set the ssid to + * P2P WILDCARD because we just do broadcast scan unless + * setting SSID. + */ + ssid.SSID_len = BRCMF_P2P_WILDCARD_SSID_LEN; + memcpy(ssid.SSID, BRCMF_P2P_WILDCARD_SSID, ssid.SSID_len); + break; + default: + brcmf_err(" invalid search state %d\n", search_state); + ret = -EINVAL; + goto exit; + } + + brcmf_p2p_set_discover_state(vif->ifp, search_state, 0, 0); + + /* + * set p2p scan parameters. + */ + p2p_params = (struct brcmf_p2p_scan_le *)memblk; + p2p_params->type = 'E'; + + /* determine the scan engine parameters */ + sparams = &p2p_params->eparams.params_le; + sparams->bss_type = DOT11_BSSTYPE_ANY; + if (p2p->cfg->active_scan) + sparams->scan_type = 0; + else + sparams->scan_type = 1; + + memset(&sparams->bssid, 0xFF, ETH_ALEN); + if (ssid.SSID_len) + memcpy(sparams->ssid_le.SSID, ssid.SSID, ssid.SSID_len); + sparams->ssid_le.SSID_len = cpu_to_le32(ssid.SSID_len); + sparams->home_time = cpu_to_le32(P2PAPI_SCAN_HOME_TIME_MS); + + /* + * SOCIAL_CHAN_CNT + 1 takes care of the Progressive scan + * supported by the supplicant. + */ + if (num_chans == SOCIAL_CHAN_CNT || num_chans == (SOCIAL_CHAN_CNT + 1)) + active = P2PAPI_SCAN_SOCIAL_DWELL_TIME_MS; + else if (num_chans == AF_PEER_SEARCH_CNT) + active = P2PAPI_SCAN_AF_SEARCH_DWELL_TIME_MS; + else if (wl_get_vif_state_all(p2p->cfg, BRCMF_VIF_STATUS_CONNECTED)) + active = -1; + else + active = P2PAPI_SCAN_DWELL_TIME_MS; + + /* Override scan params to find a peer for a connection */ + if (num_chans == 1) { + active = WL_SCAN_CONNECT_DWELL_TIME_MS; + /* WAR to sync with presence period of VSDB GO. + * send probe request more frequently + */ + nprobes = active / WL_SCAN_JOIN_PROBE_INTERVAL_MS; + } else { + nprobes = active / P2PAPI_SCAN_NPROBS_TIME_MS; + } + + if (nprobes <= 0) + nprobes = 1; + + brcmf_dbg(INFO, "nprobes # %d, active_time %d\n", nprobes, active); + sparams->active_time = cpu_to_le32(active); + sparams->nprobes = cpu_to_le32(nprobes); + sparams->passive_time = cpu_to_le32(-1); + sparams->channel_num = cpu_to_le32(num_chans & + BRCMF_SCAN_PARAMS_COUNT_MASK); + for (i = 0; i < num_chans; i++) + sparams->channel_list[i] = cpu_to_le16(chanspecs[i]); + + /* set the escan specific parameters */ + p2p_params->eparams.version = cpu_to_le32(BRCMF_ESCAN_REQ_VERSION); + p2p_params->eparams.action = cpu_to_le16(action); + p2p_params->eparams.sync_id = cpu_to_le16(0x1234); + /* perform p2p scan on primary device */ + ret = brcmf_fil_bsscfg_data_set(vif->ifp, "p2p_scan", memblk, memsize); + if (!ret) + set_bit(BRCMF_SCAN_STATUS_BUSY, &p2p->cfg->scan_status); +exit: + kfree(memblk); + return ret; +} + +/** + * brcmf_p2p_run_escan() - escan callback for peer-to-peer. + * + * @cfg: driver private data for cfg80211 interface. + * @ndev: net device for which scan is requested. + * @request: scan request from cfg80211. + * @action: scan action. + * + * Determines the P2P discovery state based to scan request parameters and + * validates the channels in the request. + */ +static s32 brcmf_p2p_run_escan(struct brcmf_cfg80211_info *cfg, + struct brcmf_if *ifp, + struct cfg80211_scan_request *request, + u16 action) +{ + struct brcmf_p2p_info *p2p = &cfg->p2p; + s32 err = 0; + s32 search_state = WL_P2P_DISC_ST_SCAN; + struct brcmf_cfg80211_vif *vif; + struct net_device *dev = NULL; + int i, num_nodfs = 0; + u16 *chanspecs; + + brcmf_dbg(TRACE, "enter\n"); + + if (!request) { + err = -EINVAL; + goto exit; + } + + if (request->n_channels) { + chanspecs = kcalloc(request->n_channels, sizeof(*chanspecs), + GFP_KERNEL); + if (!chanspecs) { + err = -ENOMEM; + goto exit; + } + vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif; + if (vif) + dev = vif->wdev.netdev; + if (request->n_channels == 3 && + request->channels[0]->hw_value == SOCIAL_CHAN_1 && + request->channels[1]->hw_value == SOCIAL_CHAN_2 && + request->channels[2]->hw_value == SOCIAL_CHAN_3) { + /* SOCIAL CHANNELS 1, 6, 11 */ + search_state = WL_P2P_DISC_ST_SEARCH; + brcmf_dbg(INFO, "P2P SEARCH PHASE START\n"); + } else if (dev != NULL && + vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) { + /* If you are already a GO, then do SEARCH only */ + brcmf_dbg(INFO, "Already a GO. Do SEARCH Only\n"); + search_state = WL_P2P_DISC_ST_SEARCH; + } else { + brcmf_dbg(INFO, "P2P SCAN STATE START\n"); + } + + /* + * no P2P scanning on passive or DFS channels. + */ + for (i = 0; i < request->n_channels; i++) { + struct ieee80211_channel *chan = request->channels[i]; + + if (chan->flags & (IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_NO_IR)) + continue; + + chanspecs[i] = channel_to_chanspec(&p2p->cfg->d11inf, + chan); + brcmf_dbg(INFO, "%d: chan=%d, channel spec=%x\n", + num_nodfs, chan->hw_value, chanspecs[i]); + num_nodfs++; + } + err = brcmf_p2p_escan(p2p, num_nodfs, chanspecs, search_state, + action, P2PAPI_BSSCFG_DEVICE); + kfree(chanspecs); + } +exit: + if (err) + brcmf_err("error (%d)\n", err); + return err; +} + + +/** + * brcmf_p2p_find_listen_channel() - find listen channel in ie string. + * + * @ie: string of information elements. + * @ie_len: length of string. + * + * Scan ie for p2p ie and look for attribute 6 channel. If available determine + * channel and return it. + */ +static s32 brcmf_p2p_find_listen_channel(const u8 *ie, u32 ie_len) +{ + u8 channel_ie[5]; + s32 listen_channel; + s32 err; + + err = cfg80211_get_p2p_attr(ie, ie_len, + IEEE80211_P2P_ATTR_LISTEN_CHANNEL, + channel_ie, sizeof(channel_ie)); + if (err < 0) + return err; + + /* listen channel subel length format: */ + /* 3(country) + 1(op. class) + 1(chan num) */ + listen_channel = (s32)channel_ie[3 + 1]; + + if (listen_channel == SOCIAL_CHAN_1 || + listen_channel == SOCIAL_CHAN_2 || + listen_channel == SOCIAL_CHAN_3) { + brcmf_dbg(INFO, "Found my Listen Channel %d\n", listen_channel); + return listen_channel; + } + + return -EPERM; +} + + +/** + * brcmf_p2p_scan_prep() - prepare scan based on request. + * + * @wiphy: wiphy device. + * @request: scan request from cfg80211. + * @vif: vif on which scan request is to be executed. + * + * Prepare the scan appropriately for type of scan requested. Overrides the + * escan .run() callback for peer-to-peer scanning. + */ +int brcmf_p2p_scan_prep(struct wiphy *wiphy, + struct cfg80211_scan_request *request, + struct brcmf_cfg80211_vif *vif) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct brcmf_p2p_info *p2p = &cfg->p2p; + int err = 0; + + if (brcmf_p2p_scan_is_p2p_request(request)) { + /* find my listen channel */ + err = brcmf_p2p_find_listen_channel(request->ie, + request->ie_len); + if (err < 0) + return err; + + p2p->afx_hdl.my_listen_chan = err; + + clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); + brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n"); + + err = brcmf_p2p_enable_discovery(p2p); + if (err) + return err; + + vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; + + /* override .run_escan() callback. */ + cfg->escan_info.run = brcmf_p2p_run_escan; + } + err = brcmf_vif_set_mgmt_ie(vif, BRCMF_VNDR_IE_PRBREQ_FLAG, + request->ie, request->ie_len); + return err; +} + + +/** + * brcmf_p2p_discover_listen() - set firmware to discover listen state. + * + * @p2p: p2p device. + * @channel: channel nr for discover listen. + * @duration: time in ms to stay on channel. + * + */ +static s32 +brcmf_p2p_discover_listen(struct brcmf_p2p_info *p2p, u16 channel, u32 duration) +{ + struct brcmf_cfg80211_vif *vif; + struct brcmu_chan ch; + s32 err = 0; + + vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; + if (!vif) { + brcmf_err("Discovery is not set, so we have nothing to do\n"); + err = -EPERM; + goto exit; + } + + if (test_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status)) { + brcmf_err("Previous LISTEN is not completed yet\n"); + /* WAR: prevent cookie mismatch in wpa_supplicant return OK */ + goto exit; + } + + ch.chnum = channel; + ch.bw = BRCMU_CHAN_BW_20; + p2p->cfg->d11inf.encchspec(&ch); + err = brcmf_p2p_set_discover_state(vif->ifp, WL_P2P_DISC_ST_LISTEN, + ch.chspec, (u16)duration); + if (!err) { + set_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, &p2p->status); + p2p->remain_on_channel_cookie++; + } +exit: + return err; +} + + +/** + * brcmf_p2p_remain_on_channel() - put device on channel and stay there. + * + * @wiphy: wiphy device. + * @channel: channel to stay on. + * @duration: time in ms to remain on channel. + * + */ +int brcmf_p2p_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, + struct ieee80211_channel *channel, + unsigned int duration, u64 *cookie) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct brcmf_p2p_info *p2p = &cfg->p2p; + s32 err; + u16 channel_nr; + + channel_nr = ieee80211_frequency_to_channel(channel->center_freq); + brcmf_dbg(TRACE, "Enter, channel: %d, duration ms (%d)\n", channel_nr, + duration); + + err = brcmf_p2p_enable_discovery(p2p); + if (err) + goto exit; + err = brcmf_p2p_discover_listen(p2p, channel_nr, duration); + if (err) + goto exit; + + memcpy(&p2p->remain_on_channel, channel, sizeof(*channel)); + *cookie = p2p->remain_on_channel_cookie; + cfg80211_ready_on_channel(wdev, *cookie, channel, duration, GFP_KERNEL); + +exit: + return err; +} + + +/** + * brcmf_p2p_notify_listen_complete() - p2p listen has completed. + * + * @ifp: interfac control. + * @e: event message. Not used, to make it usable for fweh event dispatcher. + * @data: payload of message. Not used. + * + */ +int brcmf_p2p_notify_listen_complete(struct brcmf_if *ifp, + const struct brcmf_event_msg *e, + void *data) +{ + struct brcmf_cfg80211_info *cfg = ifp->drvr->config; + struct brcmf_p2p_info *p2p = &cfg->p2p; + + brcmf_dbg(TRACE, "Enter\n"); + if (test_and_clear_bit(BRCMF_P2P_STATUS_DISCOVER_LISTEN, + &p2p->status)) { + if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN, + &p2p->status)) { + clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, + &p2p->status); + brcmf_dbg(INFO, "Listen DONE, wake up wait_next_af\n"); + complete(&p2p->wait_next_af); + } + + cfg80211_remain_on_channel_expired(&ifp->vif->wdev, + p2p->remain_on_channel_cookie, + &p2p->remain_on_channel, + GFP_KERNEL); + } + return 0; +} + + +/** + * brcmf_p2p_cancel_remain_on_channel() - cancel p2p listen state. + * + * @ifp: interfac control. + * + */ +void brcmf_p2p_cancel_remain_on_channel(struct brcmf_if *ifp) +{ + if (!ifp) + return; + brcmf_p2p_set_discover_state(ifp, WL_P2P_DISC_ST_SCAN, 0, 0); + brcmf_p2p_notify_listen_complete(ifp, NULL, NULL); +} + + +/** + * brcmf_p2p_act_frm_search() - search function for action frame. + * + * @p2p: p2p device. + * channel: channel on which action frame is to be trasmitted. + * + * search function to reach at common channel to send action frame. When + * channel is 0 then all social channels will be used to send af + */ +static s32 brcmf_p2p_act_frm_search(struct brcmf_p2p_info *p2p, u16 channel) +{ + s32 err; + u32 channel_cnt; + u16 *default_chan_list; + u32 i; + struct brcmu_chan ch; + + brcmf_dbg(TRACE, "Enter\n"); + + if (channel) + channel_cnt = AF_PEER_SEARCH_CNT; + else + channel_cnt = SOCIAL_CHAN_CNT; + default_chan_list = kzalloc(channel_cnt * sizeof(*default_chan_list), + GFP_KERNEL); + if (default_chan_list == NULL) { + brcmf_err("channel list allocation failed\n"); + err = -ENOMEM; + goto exit; + } + ch.bw = BRCMU_CHAN_BW_20; + if (channel) { + ch.chnum = channel; + p2p->cfg->d11inf.encchspec(&ch); + /* insert same channel to the chan_list */ + for (i = 0; i < channel_cnt; i++) + default_chan_list[i] = ch.chspec; + } else { + ch.chnum = SOCIAL_CHAN_1; + p2p->cfg->d11inf.encchspec(&ch); + default_chan_list[0] = ch.chspec; + ch.chnum = SOCIAL_CHAN_2; + p2p->cfg->d11inf.encchspec(&ch); + default_chan_list[1] = ch.chspec; + ch.chnum = SOCIAL_CHAN_3; + p2p->cfg->d11inf.encchspec(&ch); + default_chan_list[2] = ch.chspec; + } + err = brcmf_p2p_escan(p2p, channel_cnt, default_chan_list, + WL_P2P_DISC_ST_SEARCH, WL_ESCAN_ACTION_START, + P2PAPI_BSSCFG_DEVICE); + kfree(default_chan_list); +exit: + return err; +} + + +/** + * brcmf_p2p_afx_handler() - afx worker thread. + * + * @work: + * + */ +static void brcmf_p2p_afx_handler(struct work_struct *work) +{ + struct afx_hdl *afx_hdl = container_of(work, struct afx_hdl, afx_work); + struct brcmf_p2p_info *p2p = container_of(afx_hdl, + struct brcmf_p2p_info, + afx_hdl); + s32 err; + + if (!afx_hdl->is_active) + return; + + if (afx_hdl->is_listen && afx_hdl->my_listen_chan) + /* 100ms ~ 300ms */ + err = brcmf_p2p_discover_listen(p2p, afx_hdl->my_listen_chan, + 100 * (1 + prandom_u32() % 3)); + else + err = brcmf_p2p_act_frm_search(p2p, afx_hdl->peer_listen_chan); + + if (err) { + brcmf_err("ERROR occurred! value is (%d)\n", err); + if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, + &p2p->status)) + complete(&afx_hdl->act_frm_scan); + } +} + + +/** + * brcmf_p2p_af_searching_channel() - search channel. + * + * @p2p: p2p device info struct. + * + */ +static s32 brcmf_p2p_af_searching_channel(struct brcmf_p2p_info *p2p) +{ + struct afx_hdl *afx_hdl = &p2p->afx_hdl; + struct brcmf_cfg80211_vif *pri_vif; + unsigned long duration; + s32 retry; + + brcmf_dbg(TRACE, "Enter\n"); + + pri_vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif; + + reinit_completion(&afx_hdl->act_frm_scan); + set_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status); + afx_hdl->is_active = true; + afx_hdl->peer_chan = P2P_INVALID_CHANNEL; + + /* Loop to wait until we find a peer's channel or the + * pending action frame tx is cancelled. + */ + retry = 0; + duration = msecs_to_jiffies(P2P_AF_FRM_SCAN_MAX_WAIT); + while ((retry < P2P_CHANNEL_SYNC_RETRY) && + (afx_hdl->peer_chan == P2P_INVALID_CHANNEL)) { + afx_hdl->is_listen = false; + brcmf_dbg(TRACE, "Scheduling action frame for sending.. (%d)\n", + retry); + /* search peer on peer's listen channel */ + schedule_work(&afx_hdl->afx_work); + wait_for_completion_timeout(&afx_hdl->act_frm_scan, duration); + if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) || + (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, + &p2p->status))) + break; + + if (afx_hdl->my_listen_chan) { + brcmf_dbg(TRACE, "Scheduling listen peer, channel=%d\n", + afx_hdl->my_listen_chan); + /* listen on my listen channel */ + afx_hdl->is_listen = true; + schedule_work(&afx_hdl->afx_work); + wait_for_completion_timeout(&afx_hdl->act_frm_scan, + duration); + } + if ((afx_hdl->peer_chan != P2P_INVALID_CHANNEL) || + (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, + &p2p->status))) + break; + retry++; + + /* if sta is connected or connecting, sleep for a while before + * retry af tx or finding a peer + */ + if (test_bit(BRCMF_VIF_STATUS_CONNECTED, &pri_vif->sme_state) || + test_bit(BRCMF_VIF_STATUS_CONNECTING, &pri_vif->sme_state)) + msleep(P2P_DEFAULT_SLEEP_TIME_VSDB); + } + + brcmf_dbg(TRACE, "Completed search/listen peer_chan=%d\n", + afx_hdl->peer_chan); + afx_hdl->is_active = false; + + clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status); + + return afx_hdl->peer_chan; +} + + +/** + * brcmf_p2p_scan_finding_common_channel() - was escan used for finding channel + * + * @cfg: common configuration struct. + * @bi: bss info struct, result from scan. + * + */ +bool brcmf_p2p_scan_finding_common_channel(struct brcmf_cfg80211_info *cfg, + struct brcmf_bss_info_le *bi) + +{ + struct brcmf_p2p_info *p2p = &cfg->p2p; + struct afx_hdl *afx_hdl = &p2p->afx_hdl; + struct brcmu_chan ch; + u8 *ie; + s32 err; + u8 p2p_dev_addr[ETH_ALEN]; + + if (!test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status)) + return false; + + if (bi == NULL) { + brcmf_dbg(TRACE, "ACTION FRAME SCAN Done\n"); + if (afx_hdl->peer_chan == P2P_INVALID_CHANNEL) + complete(&afx_hdl->act_frm_scan); + return true; + } + + ie = ((u8 *)bi) + le16_to_cpu(bi->ie_offset); + memset(p2p_dev_addr, 0, sizeof(p2p_dev_addr)); + err = cfg80211_get_p2p_attr(ie, le32_to_cpu(bi->ie_length), + IEEE80211_P2P_ATTR_DEVICE_INFO, + p2p_dev_addr, sizeof(p2p_dev_addr)); + if (err < 0) + err = cfg80211_get_p2p_attr(ie, le32_to_cpu(bi->ie_length), + IEEE80211_P2P_ATTR_DEVICE_ID, + p2p_dev_addr, sizeof(p2p_dev_addr)); + if ((err >= 0) && + (ether_addr_equal(p2p_dev_addr, afx_hdl->tx_dst_addr))) { + if (!bi->ctl_ch) { + ch.chspec = le16_to_cpu(bi->chanspec); + cfg->d11inf.decchspec(&ch); + bi->ctl_ch = ch.chnum; + } + afx_hdl->peer_chan = bi->ctl_ch; + brcmf_dbg(TRACE, "ACTION FRAME SCAN : Peer %pM found, channel : %d\n", + afx_hdl->tx_dst_addr, afx_hdl->peer_chan); + complete(&afx_hdl->act_frm_scan); + } + return true; +} + +/** + * brcmf_p2p_stop_wait_next_action_frame() - finish scan if af tx complete. + * + * @cfg: common configuration struct. + * + */ +static void +brcmf_p2p_stop_wait_next_action_frame(struct brcmf_cfg80211_info *cfg) +{ + struct brcmf_p2p_info *p2p = &cfg->p2p; + struct brcmf_if *ifp = cfg->escan_info.ifp; + + if (test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status) && + (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status) || + test_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status))) { + brcmf_dbg(TRACE, "*** Wake UP ** abort actframe iovar\n"); + /* if channel is not zero, "actfame" uses off channel scan. + * So abort scan for off channel completion. + */ + if (p2p->af_sent_channel) + brcmf_notify_escan_complete(cfg, ifp, true, true); + } else if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN, + &p2p->status)) { + brcmf_dbg(TRACE, "*** Wake UP ** abort listen for next af frame\n"); + /* So abort scan to cancel listen */ + brcmf_notify_escan_complete(cfg, ifp, true, true); + } +} + + +/** + * brcmf_p2p_gon_req_collision() - Check if go negotiaton collission + * + * @p2p: p2p device info struct. + * + * return true if recevied action frame is to be dropped. + */ +static bool +brcmf_p2p_gon_req_collision(struct brcmf_p2p_info *p2p, u8 *mac) +{ + struct brcmf_cfg80211_info *cfg = p2p->cfg; + struct brcmf_if *ifp; + + brcmf_dbg(TRACE, "Enter\n"); + + if (!test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) || + !p2p->gon_req_action) + return false; + + brcmf_dbg(TRACE, "GO Negotiation Request COLLISION !!!\n"); + /* if sa(peer) addr is less than da(my) addr, then this device + * process peer's gon request and block to send gon req. + * if not (sa addr > da addr), + * this device will process gon request and drop gon req of peer. + */ + ifp = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->ifp; + if (memcmp(mac, ifp->mac_addr, ETH_ALEN) < 0) { + brcmf_dbg(INFO, "Block transmit gon req !!!\n"); + p2p->block_gon_req_tx = true; + /* if we are finding a common channel for sending af, + * do not scan more to block to send current gon req + */ + if (test_and_clear_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, + &p2p->status)) + complete(&p2p->afx_hdl.act_frm_scan); + if (test_and_clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, + &p2p->status)) + brcmf_p2p_stop_wait_next_action_frame(cfg); + return false; + } + + /* drop gon request of peer to process gon request by this device. */ + brcmf_dbg(INFO, "Drop received gon req !!!\n"); + + return true; +} + + +/** + * brcmf_p2p_notify_action_frame_rx() - received action frame. + * + * @ifp: interfac control. + * @e: event message. Not used, to make it usable for fweh event dispatcher. + * @data: payload of message, containing action frame data. + * + */ +int brcmf_p2p_notify_action_frame_rx(struct brcmf_if *ifp, + const struct brcmf_event_msg *e, + void *data) +{ + struct brcmf_cfg80211_info *cfg = ifp->drvr->config; + struct brcmf_p2p_info *p2p = &cfg->p2p; + struct afx_hdl *afx_hdl = &p2p->afx_hdl; + struct wireless_dev *wdev; + u32 mgmt_frame_len = e->datalen - sizeof(struct brcmf_rx_mgmt_data); + struct brcmf_rx_mgmt_data *rxframe = (struct brcmf_rx_mgmt_data *)data; + u8 *frame = (u8 *)(rxframe + 1); + struct brcmf_p2p_pub_act_frame *act_frm; + struct brcmf_p2psd_gas_pub_act_frame *sd_act_frm; + struct brcmu_chan ch; + struct ieee80211_mgmt *mgmt_frame; + s32 freq; + u16 mgmt_type; + u8 action; + + ch.chspec = be16_to_cpu(rxframe->chanspec); + cfg->d11inf.decchspec(&ch); + /* Check if wpa_supplicant has registered for this frame */ + brcmf_dbg(INFO, "ifp->vif->mgmt_rx_reg %04x\n", ifp->vif->mgmt_rx_reg); + mgmt_type = (IEEE80211_STYPE_ACTION & IEEE80211_FCTL_STYPE) >> 4; + if ((ifp->vif->mgmt_rx_reg & BIT(mgmt_type)) == 0) + return 0; + + brcmf_p2p_print_actframe(false, frame, mgmt_frame_len); + + action = P2P_PAF_SUBTYPE_INVALID; + if (brcmf_p2p_is_pub_action(frame, mgmt_frame_len)) { + act_frm = (struct brcmf_p2p_pub_act_frame *)frame; + action = act_frm->subtype; + if ((action == P2P_PAF_GON_REQ) && + (brcmf_p2p_gon_req_collision(p2p, (u8 *)e->addr))) { + if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, + &p2p->status) && + (ether_addr_equal(afx_hdl->tx_dst_addr, e->addr))) { + afx_hdl->peer_chan = ch.chnum; + brcmf_dbg(INFO, "GON request: Peer found, channel=%d\n", + afx_hdl->peer_chan); + complete(&afx_hdl->act_frm_scan); + } + return 0; + } + /* After complete GO Negotiation, roll back to mpc mode */ + if ((action == P2P_PAF_GON_CONF) || + (action == P2P_PAF_PROVDIS_RSP)) + brcmf_set_mpc(ifp, 1); + if (action == P2P_PAF_GON_CONF) { + brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status cleared\n"); + clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); + } + } else if (brcmf_p2p_is_gas_action(frame, mgmt_frame_len)) { + sd_act_frm = (struct brcmf_p2psd_gas_pub_act_frame *)frame; + action = sd_act_frm->action; + } + + if (test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) && + (p2p->next_af_subtype == action)) { + brcmf_dbg(TRACE, "We got a right next frame! (%d)\n", action); + clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, + &p2p->status); + /* Stop waiting for next AF. */ + brcmf_p2p_stop_wait_next_action_frame(cfg); + } + + mgmt_frame = kzalloc(offsetof(struct ieee80211_mgmt, u) + + mgmt_frame_len, GFP_KERNEL); + if (!mgmt_frame) { + brcmf_err("No memory available for action frame\n"); + return -ENOMEM; + } + memcpy(mgmt_frame->da, ifp->mac_addr, ETH_ALEN); + brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSSID, mgmt_frame->bssid, + ETH_ALEN); + memcpy(mgmt_frame->sa, e->addr, ETH_ALEN); + mgmt_frame->frame_control = cpu_to_le16(IEEE80211_STYPE_ACTION); + memcpy(&mgmt_frame->u, frame, mgmt_frame_len); + mgmt_frame_len += offsetof(struct ieee80211_mgmt, u); + + freq = ieee80211_channel_to_frequency(ch.chnum, + ch.band == BRCMU_CHAN_BAND_2G ? + IEEE80211_BAND_2GHZ : + IEEE80211_BAND_5GHZ); + + wdev = &ifp->vif->wdev; + cfg80211_rx_mgmt(wdev, freq, 0, (u8 *)mgmt_frame, mgmt_frame_len, 0, + GFP_ATOMIC); + + kfree(mgmt_frame); + return 0; +} + + +/** + * brcmf_p2p_notify_action_tx_complete() - transmit action frame complete + * + * @ifp: interfac control. + * @e: event message. Not used, to make it usable for fweh event dispatcher. + * @data: not used. + * + */ +int brcmf_p2p_notify_action_tx_complete(struct brcmf_if *ifp, + const struct brcmf_event_msg *e, + void *data) +{ + struct brcmf_cfg80211_info *cfg = ifp->drvr->config; + struct brcmf_p2p_info *p2p = &cfg->p2p; + + brcmf_dbg(INFO, "Enter: event %s, status=%d\n", + e->event_code == BRCMF_E_ACTION_FRAME_OFF_CHAN_COMPLETE ? + "ACTION_FRAME_OFF_CHAN_COMPLETE" : "ACTION_FRAME_COMPLETE", + e->status); + + if (!test_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status)) + return 0; + + if (e->event_code == BRCMF_E_ACTION_FRAME_COMPLETE) { + if (e->status == BRCMF_E_STATUS_SUCCESS) + set_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, + &p2p->status); + else { + set_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status); + /* If there is no ack, we don't need to wait for + * WLC_E_ACTION_FRAME_OFFCHAN_COMPLETE event + */ + brcmf_p2p_stop_wait_next_action_frame(cfg); + } + + } else { + complete(&p2p->send_af_done); + } + return 0; +} + + +/** + * brcmf_p2p_tx_action_frame() - send action frame over fil. + * + * @p2p: p2p info struct for vif. + * @af_params: action frame data/info. + * + * Send an action frame immediately without doing channel synchronization. + * + * This function waits for a completion event before returning. + * The WLC_E_ACTION_FRAME_COMPLETE event will be received when the action + * frame is transmitted. + */ +static s32 brcmf_p2p_tx_action_frame(struct brcmf_p2p_info *p2p, + struct brcmf_fil_af_params_le *af_params) +{ + struct brcmf_cfg80211_vif *vif; + s32 err = 0; + s32 timeout = 0; + + brcmf_dbg(TRACE, "Enter\n"); + + reinit_completion(&p2p->send_af_done); + clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status); + clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status); + + vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; + err = brcmf_fil_bsscfg_data_set(vif->ifp, "actframe", af_params, + sizeof(*af_params)); + if (err) { + brcmf_err(" sending action frame has failed\n"); + goto exit; + } + + p2p->af_sent_channel = le32_to_cpu(af_params->channel); + p2p->af_tx_sent_jiffies = jiffies; + + timeout = wait_for_completion_timeout(&p2p->send_af_done, + msecs_to_jiffies(P2P_AF_MAX_WAIT_TIME)); + + if (test_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status)) { + brcmf_dbg(TRACE, "TX action frame operation is success\n"); + } else { + err = -EIO; + brcmf_dbg(TRACE, "TX action frame operation has failed\n"); + } + /* clear status bit for action tx */ + clear_bit(BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, &p2p->status); + clear_bit(BRCMF_P2P_STATUS_ACTION_TX_NOACK, &p2p->status); + +exit: + return err; +} + + +/** + * brcmf_p2p_pub_af_tx() - public action frame tx routine. + * + * @cfg: driver private data for cfg80211 interface. + * @af_params: action frame data/info. + * @config_af_params: configuration data for action frame. + * + * routine which transmits ation frame public type. + */ +static s32 brcmf_p2p_pub_af_tx(struct brcmf_cfg80211_info *cfg, + struct brcmf_fil_af_params_le *af_params, + struct brcmf_config_af_params *config_af_params) +{ + struct brcmf_p2p_info *p2p = &cfg->p2p; + struct brcmf_fil_action_frame_le *action_frame; + struct brcmf_p2p_pub_act_frame *act_frm; + s32 err = 0; + u16 ie_len; + + action_frame = &af_params->action_frame; + act_frm = (struct brcmf_p2p_pub_act_frame *)(action_frame->data); + + config_af_params->extra_listen = true; + + switch (act_frm->subtype) { + case P2P_PAF_GON_REQ: + brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status set\n"); + set_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); + config_af_params->mpc_onoff = 0; + config_af_params->search_channel = true; + p2p->next_af_subtype = act_frm->subtype + 1; + p2p->gon_req_action = true; + /* increase dwell time to wait for RESP frame */ + af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME); + break; + case P2P_PAF_GON_RSP: + p2p->next_af_subtype = act_frm->subtype + 1; + /* increase dwell time to wait for CONF frame */ + af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME); + break; + case P2P_PAF_GON_CONF: + /* If we reached till GO Neg confirmation reset the filter */ + brcmf_dbg(TRACE, "P2P: GO_NEG_PHASE status cleared\n"); + clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); + /* turn on mpc again if go nego is done */ + config_af_params->mpc_onoff = 1; + /* minimize dwell time */ + af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME); + config_af_params->extra_listen = false; + break; + case P2P_PAF_INVITE_REQ: + config_af_params->search_channel = true; + p2p->next_af_subtype = act_frm->subtype + 1; + /* increase dwell time */ + af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME); + break; + case P2P_PAF_INVITE_RSP: + /* minimize dwell time */ + af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME); + config_af_params->extra_listen = false; + break; + case P2P_PAF_DEVDIS_REQ: + config_af_params->search_channel = true; + p2p->next_af_subtype = act_frm->subtype + 1; + /* maximize dwell time to wait for RESP frame */ + af_params->dwell_time = cpu_to_le32(P2P_AF_LONG_DWELL_TIME); + break; + case P2P_PAF_DEVDIS_RSP: + /* minimize dwell time */ + af_params->dwell_time = cpu_to_le32(P2P_AF_MIN_DWELL_TIME); + config_af_params->extra_listen = false; + break; + case P2P_PAF_PROVDIS_REQ: + ie_len = le16_to_cpu(action_frame->len) - + offsetof(struct brcmf_p2p_pub_act_frame, elts); + if (cfg80211_get_p2p_attr(&act_frm->elts[0], ie_len, + IEEE80211_P2P_ATTR_GROUP_ID, + NULL, 0) < 0) + config_af_params->search_channel = true; + config_af_params->mpc_onoff = 0; + p2p->next_af_subtype = act_frm->subtype + 1; + /* increase dwell time to wait for RESP frame */ + af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME); + break; + case P2P_PAF_PROVDIS_RSP: + /* wpa_supplicant send go nego req right after prov disc */ + p2p->next_af_subtype = P2P_PAF_GON_REQ; + /* increase dwell time to MED level */ + af_params->dwell_time = cpu_to_le32(P2P_AF_MED_DWELL_TIME); + config_af_params->extra_listen = false; + break; + default: + brcmf_err("Unknown p2p pub act frame subtype: %d\n", + act_frm->subtype); + err = -EINVAL; + } + return err; +} + +/** + * brcmf_p2p_send_action_frame() - send action frame . + * + * @cfg: driver private data for cfg80211 interface. + * @ndev: net device to transmit on. + * @af_params: configuration data for action frame. + */ +bool brcmf_p2p_send_action_frame(struct brcmf_cfg80211_info *cfg, + struct net_device *ndev, + struct brcmf_fil_af_params_le *af_params) +{ + struct brcmf_p2p_info *p2p = &cfg->p2p; + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_fil_action_frame_le *action_frame; + struct brcmf_config_af_params config_af_params; + struct afx_hdl *afx_hdl = &p2p->afx_hdl; + u16 action_frame_len; + bool ack = false; + u8 category; + u8 action; + s32 tx_retry; + s32 extra_listen_time; + uint delta_ms; + + action_frame = &af_params->action_frame; + action_frame_len = le16_to_cpu(action_frame->len); + + brcmf_p2p_print_actframe(true, action_frame->data, action_frame_len); + + /* Add the default dwell time. Dwell time to stay off-channel */ + /* to wait for a response action frame after transmitting an */ + /* GO Negotiation action frame */ + af_params->dwell_time = cpu_to_le32(P2P_AF_DWELL_TIME); + + category = action_frame->data[DOT11_ACTION_CAT_OFF]; + action = action_frame->data[DOT11_ACTION_ACT_OFF]; + + /* initialize variables */ + p2p->next_af_subtype = P2P_PAF_SUBTYPE_INVALID; + p2p->gon_req_action = false; + + /* config parameters */ + config_af_params.mpc_onoff = -1; + config_af_params.search_channel = false; + config_af_params.extra_listen = false; + + if (brcmf_p2p_is_pub_action(action_frame->data, action_frame_len)) { + /* p2p public action frame process */ + if (brcmf_p2p_pub_af_tx(cfg, af_params, &config_af_params)) { + /* Just send unknown subtype frame with */ + /* default parameters. */ + brcmf_err("P2P Public action frame, unknown subtype.\n"); + } + } else if (brcmf_p2p_is_gas_action(action_frame->data, + action_frame_len)) { + /* service discovery process */ + if (action == P2PSD_ACTION_ID_GAS_IREQ || + action == P2PSD_ACTION_ID_GAS_CREQ) { + /* configure service discovery query frame */ + config_af_params.search_channel = true; + + /* save next af suptype to cancel */ + /* remaining dwell time */ + p2p->next_af_subtype = action + 1; + + af_params->dwell_time = + cpu_to_le32(P2P_AF_MED_DWELL_TIME); + } else if (action == P2PSD_ACTION_ID_GAS_IRESP || + action == P2PSD_ACTION_ID_GAS_CRESP) { + /* configure service discovery response frame */ + af_params->dwell_time = + cpu_to_le32(P2P_AF_MIN_DWELL_TIME); + } else { + brcmf_err("Unknown action type: %d\n", action); + goto exit; + } + } else if (brcmf_p2p_is_p2p_action(action_frame->data, + action_frame_len)) { + /* do not configure anything. it will be */ + /* sent with a default configuration */ + } else { + brcmf_err("Unknown Frame: category 0x%x, action 0x%x\n", + category, action); + return false; + } + + /* if connecting on primary iface, sleep for a while before sending + * af tx for VSDB + */ + if (test_bit(BRCMF_VIF_STATUS_CONNECTING, + &p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->sme_state)) + msleep(50); + + /* if scan is ongoing, abort current scan. */ + if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) + brcmf_abort_scanning(cfg); + + memcpy(afx_hdl->tx_dst_addr, action_frame->da, ETH_ALEN); + + /* To make sure to send successfully action frame, turn off mpc */ + if (config_af_params.mpc_onoff == 0) + brcmf_set_mpc(ifp, 0); + + /* set status and destination address before sending af */ + if (p2p->next_af_subtype != P2P_PAF_SUBTYPE_INVALID) { + /* set status to cancel the remained dwell time in rx process */ + set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status); + } + + p2p->af_sent_channel = 0; + set_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status); + /* validate channel and p2p ies */ + if (config_af_params.search_channel && + IS_P2P_SOCIAL_CHANNEL(le32_to_cpu(af_params->channel)) && + p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif->saved_ie.probe_req_ie_len) { + afx_hdl = &p2p->afx_hdl; + afx_hdl->peer_listen_chan = le32_to_cpu(af_params->channel); + + if (brcmf_p2p_af_searching_channel(p2p) == + P2P_INVALID_CHANNEL) { + brcmf_err("Couldn't find peer's channel.\n"); + goto exit; + } + + /* Abort scan even for VSDB scenarios. Scan gets aborted in + * firmware but after the check of piggyback algorithm. To take + * care of current piggback algo, lets abort the scan here + * itself. + */ + brcmf_notify_escan_complete(cfg, ifp, true, true); + + /* update channel */ + af_params->channel = cpu_to_le32(afx_hdl->peer_chan); + } + + tx_retry = 0; + while (!p2p->block_gon_req_tx && + (ack == false) && (tx_retry < P2P_AF_TX_MAX_RETRY)) { + ack = !brcmf_p2p_tx_action_frame(p2p, af_params); + tx_retry++; + } + if (ack == false) { + brcmf_err("Failed to send Action Frame(retry %d)\n", tx_retry); + clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); + } + +exit: + clear_bit(BRCMF_P2P_STATUS_SENDING_ACT_FRAME, &p2p->status); + + /* WAR: sometimes dongle does not keep the dwell time of 'actframe'. + * if we coundn't get the next action response frame and dongle does + * not keep the dwell time, go to listen state again to get next action + * response frame. + */ + if (ack && config_af_params.extra_listen && !p2p->block_gon_req_tx && + test_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status) && + p2p->af_sent_channel == afx_hdl->my_listen_chan) { + delta_ms = jiffies_to_msecs(jiffies - p2p->af_tx_sent_jiffies); + if (le32_to_cpu(af_params->dwell_time) > delta_ms) + extra_listen_time = le32_to_cpu(af_params->dwell_time) - + delta_ms; + else + extra_listen_time = 0; + if (extra_listen_time > 50) { + set_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN, + &p2p->status); + brcmf_dbg(INFO, "Wait more time! actual af time:%d, calculated extra listen:%d\n", + le32_to_cpu(af_params->dwell_time), + extra_listen_time); + extra_listen_time += 100; + if (!brcmf_p2p_discover_listen(p2p, + p2p->af_sent_channel, + extra_listen_time)) { + unsigned long duration; + + extra_listen_time += 100; + duration = msecs_to_jiffies(extra_listen_time); + wait_for_completion_timeout(&p2p->wait_next_af, + duration); + } + clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN, + &p2p->status); + } + } + + if (p2p->block_gon_req_tx) { + /* if ack is true, supplicant will wait more time(100ms). + * so we will return it as a success to get more time . + */ + p2p->block_gon_req_tx = false; + ack = true; + } + + clear_bit(BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, &p2p->status); + /* if all done, turn mpc on again */ + if (config_af_params.mpc_onoff == 1) + brcmf_set_mpc(ifp, 1); + + return ack; +} + +/** + * brcmf_p2p_notify_rx_mgmt_p2p_probereq() - Event handler for p2p probe req. + * + * @ifp: interface pointer for which event was received. + * @e: even message. + * @data: payload of event message (probe request). + */ +s32 brcmf_p2p_notify_rx_mgmt_p2p_probereq(struct brcmf_if *ifp, + const struct brcmf_event_msg *e, + void *data) +{ + struct brcmf_cfg80211_info *cfg = ifp->drvr->config; + struct brcmf_p2p_info *p2p = &cfg->p2p; + struct afx_hdl *afx_hdl = &p2p->afx_hdl; + struct brcmf_cfg80211_vif *vif = ifp->vif; + struct brcmf_rx_mgmt_data *rxframe = (struct brcmf_rx_mgmt_data *)data; + u16 chanspec = be16_to_cpu(rxframe->chanspec); + struct brcmu_chan ch; + u8 *mgmt_frame; + u32 mgmt_frame_len; + s32 freq; + u16 mgmt_type; + + brcmf_dbg(INFO, "Enter: event %d reason %d\n", e->event_code, + e->reason); + + ch.chspec = be16_to_cpu(rxframe->chanspec); + cfg->d11inf.decchspec(&ch); + + if (test_bit(BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL, &p2p->status) && + (ether_addr_equal(afx_hdl->tx_dst_addr, e->addr))) { + afx_hdl->peer_chan = ch.chnum; + brcmf_dbg(INFO, "PROBE REQUEST: Peer found, channel=%d\n", + afx_hdl->peer_chan); + complete(&afx_hdl->act_frm_scan); + } + + /* Firmware sends us two proberesponses for each idx one. At the */ + /* moment anything but bsscfgidx 0 is passed up to supplicant */ + if (e->bsscfgidx == 0) + return 0; + + /* Filter any P2P probe reqs arriving during the GO-NEG Phase */ + if (test_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status)) { + brcmf_dbg(INFO, "Filtering P2P probe_req in GO-NEG phase\n"); + return 0; + } + + /* Check if wpa_supplicant has registered for this frame */ + brcmf_dbg(INFO, "vif->mgmt_rx_reg %04x\n", vif->mgmt_rx_reg); + mgmt_type = (IEEE80211_STYPE_PROBE_REQ & IEEE80211_FCTL_STYPE) >> 4; + if ((vif->mgmt_rx_reg & BIT(mgmt_type)) == 0) + return 0; + + mgmt_frame = (u8 *)(rxframe + 1); + mgmt_frame_len = e->datalen - sizeof(*rxframe); + freq = ieee80211_channel_to_frequency(ch.chnum, + ch.band == BRCMU_CHAN_BAND_2G ? + IEEE80211_BAND_2GHZ : + IEEE80211_BAND_5GHZ); + + cfg80211_rx_mgmt(&vif->wdev, freq, 0, mgmt_frame, mgmt_frame_len, 0, + GFP_ATOMIC); + + brcmf_dbg(INFO, "mgmt_frame_len (%d) , e->datalen (%d), chanspec (%04x), freq (%d)\n", + mgmt_frame_len, e->datalen, chanspec, freq); + + return 0; +} + + +/** + * brcmf_p2p_attach() - attach for P2P. + * + * @cfg: driver private data for cfg80211 interface. + */ +s32 brcmf_p2p_attach(struct brcmf_cfg80211_info *cfg) +{ + struct brcmf_if *pri_ifp; + struct brcmf_if *p2p_ifp; + struct brcmf_cfg80211_vif *p2p_vif; + struct brcmf_p2p_info *p2p; + struct brcmf_pub *drvr; + s32 bssidx; + s32 err = 0; + + p2p = &cfg->p2p; + p2p->cfg = cfg; + + drvr = cfg->pub; + + pri_ifp = drvr->iflist[0]; + p2p_ifp = drvr->iflist[1]; + + p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif = pri_ifp->vif; + + if (p2p_ifp) { + p2p_vif = brcmf_alloc_vif(cfg, NL80211_IFTYPE_P2P_DEVICE, + false); + if (IS_ERR(p2p_vif)) { + brcmf_err("could not create discovery vif\n"); + err = -ENOMEM; + goto exit; + } + + p2p_vif->ifp = p2p_ifp; + p2p_ifp->vif = p2p_vif; + p2p_vif->wdev.netdev = p2p_ifp->ndev; + p2p_ifp->ndev->ieee80211_ptr = &p2p_vif->wdev; + SET_NETDEV_DEV(p2p_ifp->ndev, wiphy_dev(cfg->wiphy)); + + p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = p2p_vif; + + brcmf_p2p_generate_bss_mac(p2p, NULL); + memcpy(p2p_ifp->mac_addr, p2p->dev_addr, ETH_ALEN); + brcmf_p2p_set_firmware(pri_ifp, p2p->dev_addr); + + /* Initialize P2P Discovery in the firmware */ + err = brcmf_fil_iovar_int_set(pri_ifp, "p2p_disc", 1); + if (err < 0) { + brcmf_err("set p2p_disc error\n"); + brcmf_free_vif(p2p_vif); + goto exit; + } + /* obtain bsscfg index for P2P discovery */ + err = brcmf_fil_iovar_int_get(pri_ifp, "p2p_dev", &bssidx); + if (err < 0) { + brcmf_err("retrieving discover bsscfg index failed\n"); + brcmf_free_vif(p2p_vif); + goto exit; + } + /* Verify that firmware uses same bssidx as driver !! */ + if (p2p_ifp->bssidx != bssidx) { + brcmf_err("Incorrect bssidx=%d, compared to p2p_ifp->bssidx=%d\n", + bssidx, p2p_ifp->bssidx); + brcmf_free_vif(p2p_vif); + goto exit; + } + + init_completion(&p2p->send_af_done); + INIT_WORK(&p2p->afx_hdl.afx_work, brcmf_p2p_afx_handler); + init_completion(&p2p->afx_hdl.act_frm_scan); + init_completion(&p2p->wait_next_af); + } +exit: + return err; +} + + +/** + * brcmf_p2p_detach() - detach P2P. + * + * @p2p: P2P specific data. + */ +void brcmf_p2p_detach(struct brcmf_p2p_info *p2p) +{ + struct brcmf_cfg80211_vif *vif; + + vif = p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif; + if (vif != NULL) { + brcmf_p2p_cancel_remain_on_channel(vif->ifp); + brcmf_p2p_deinit_discovery(p2p); + /* remove discovery interface */ + brcmf_free_vif(vif); + p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL; + } + /* just set it all to zero */ + memset(p2p, 0, sizeof(*p2p)); +} + +/** + * brcmf_p2p_get_current_chanspec() - Get current operation channel. + * + * @p2p: P2P specific data. + * @chanspec: chanspec to be returned. + */ +static void brcmf_p2p_get_current_chanspec(struct brcmf_p2p_info *p2p, + u16 *chanspec) +{ + struct brcmf_if *ifp; + u8 mac_addr[ETH_ALEN]; + struct brcmu_chan ch; + struct brcmf_bss_info_le *bi; + u8 *buf; + + ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp; + + if (brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSSID, mac_addr, + ETH_ALEN) == 0) { + buf = kzalloc(WL_BSS_INFO_MAX, GFP_KERNEL); + if (buf != NULL) { + *(__le32 *)buf = cpu_to_le32(WL_BSS_INFO_MAX); + if (brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSS_INFO, + buf, WL_BSS_INFO_MAX) == 0) { + bi = (struct brcmf_bss_info_le *)(buf + 4); + *chanspec = le16_to_cpu(bi->chanspec); + kfree(buf); + return; + } + kfree(buf); + } + } + /* Use default channel for P2P */ + ch.chnum = BRCMF_P2P_TEMP_CHAN; + ch.bw = BRCMU_CHAN_BW_20; + p2p->cfg->d11inf.encchspec(&ch); + *chanspec = ch.chspec; +} + +/** + * Change a P2P Role. + * Parameters: + * @mac: MAC address of the BSS to change a role + * Returns 0 if success. + */ +int brcmf_p2p_ifchange(struct brcmf_cfg80211_info *cfg, + enum brcmf_fil_p2p_if_types if_type) +{ + struct brcmf_p2p_info *p2p = &cfg->p2p; + struct brcmf_cfg80211_vif *vif; + struct brcmf_fil_p2p_if_le if_request; + s32 err; + u16 chanspec; + + brcmf_dbg(TRACE, "Enter\n"); + + vif = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif; + if (!vif) { + brcmf_err("vif for P2PAPI_BSSCFG_PRIMARY does not exist\n"); + return -EPERM; + } + brcmf_notify_escan_complete(cfg, vif->ifp, true, true); + vif = p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif; + if (!vif) { + brcmf_err("vif for P2PAPI_BSSCFG_CONNECTION does not exist\n"); + return -EPERM; + } + brcmf_set_mpc(vif->ifp, 0); + + /* In concurrency case, STA may be already associated in a particular */ + /* channel. so retrieve the current channel of primary interface and */ + /* then start the virtual interface on that. */ + brcmf_p2p_get_current_chanspec(p2p, &chanspec); + + if_request.type = cpu_to_le16((u16)if_type); + if_request.chspec = cpu_to_le16(chanspec); + memcpy(if_request.addr, p2p->int_addr, sizeof(if_request.addr)); + + brcmf_cfg80211_arm_vif_event(cfg, vif); + err = brcmf_fil_iovar_data_set(vif->ifp, "p2p_ifupd", &if_request, + sizeof(if_request)); + if (err) { + brcmf_err("p2p_ifupd FAILED, err=%d\n", err); + brcmf_cfg80211_arm_vif_event(cfg, NULL); + return err; + } + err = brcmf_cfg80211_wait_vif_event_timeout(cfg, BRCMF_E_IF_CHANGE, + msecs_to_jiffies(1500)); + brcmf_cfg80211_arm_vif_event(cfg, NULL); + if (!err) { + brcmf_err("No BRCMF_E_IF_CHANGE event received\n"); + return -EIO; + } + + err = brcmf_fil_cmd_int_set(vif->ifp, BRCMF_C_SET_SCB_TIMEOUT, + BRCMF_SCB_TIMEOUT_VALUE); + + return err; +} + +static int brcmf_p2p_request_p2p_if(struct brcmf_p2p_info *p2p, + struct brcmf_if *ifp, u8 ea[ETH_ALEN], + enum brcmf_fil_p2p_if_types iftype) +{ + struct brcmf_fil_p2p_if_le if_request; + int err; + u16 chanspec; + + /* we need a default channel */ + brcmf_p2p_get_current_chanspec(p2p, &chanspec); + + /* fill the firmware request */ + memcpy(if_request.addr, ea, ETH_ALEN); + if_request.type = cpu_to_le16((u16)iftype); + if_request.chspec = cpu_to_le16(chanspec); + + err = brcmf_fil_iovar_data_set(ifp, "p2p_ifadd", &if_request, + sizeof(if_request)); + if (err) + return err; + + return err; +} + +static int brcmf_p2p_disable_p2p_if(struct brcmf_cfg80211_vif *vif) +{ + struct brcmf_cfg80211_info *cfg = wdev_to_cfg(&vif->wdev); + struct net_device *pri_ndev = cfg_to_ndev(cfg); + struct brcmf_if *ifp = netdev_priv(pri_ndev); + u8 *addr = vif->wdev.netdev->dev_addr; + + return brcmf_fil_iovar_data_set(ifp, "p2p_ifdis", addr, ETH_ALEN); +} + +static int brcmf_p2p_release_p2p_if(struct brcmf_cfg80211_vif *vif) +{ + struct brcmf_cfg80211_info *cfg = wdev_to_cfg(&vif->wdev); + struct net_device *pri_ndev = cfg_to_ndev(cfg); + struct brcmf_if *ifp = netdev_priv(pri_ndev); + u8 *addr = vif->wdev.netdev->dev_addr; + + return brcmf_fil_iovar_data_set(ifp, "p2p_ifdel", addr, ETH_ALEN); +} + +/** + * brcmf_p2p_create_p2pdev() - create a P2P_DEVICE virtual interface. + * + * @p2p: P2P specific data. + * @wiphy: wiphy device of new interface. + * @addr: mac address for this new interface. + */ +static struct wireless_dev *brcmf_p2p_create_p2pdev(struct brcmf_p2p_info *p2p, + struct wiphy *wiphy, + u8 *addr) +{ + struct brcmf_cfg80211_vif *p2p_vif; + struct brcmf_if *p2p_ifp; + struct brcmf_if *pri_ifp; + int err; + u32 bssidx; + + if (p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif) + return ERR_PTR(-ENOSPC); + + p2p_vif = brcmf_alloc_vif(p2p->cfg, NL80211_IFTYPE_P2P_DEVICE, + false); + if (IS_ERR(p2p_vif)) { + brcmf_err("could not create discovery vif\n"); + return (struct wireless_dev *)p2p_vif; + } + + pri_ifp = p2p->bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp; + brcmf_p2p_generate_bss_mac(p2p, addr); + brcmf_p2p_set_firmware(pri_ifp, p2p->dev_addr); + + brcmf_cfg80211_arm_vif_event(p2p->cfg, p2p_vif); + + /* Initialize P2P Discovery in the firmware */ + err = brcmf_fil_iovar_int_set(pri_ifp, "p2p_disc", 1); + if (err < 0) { + brcmf_err("set p2p_disc error\n"); + brcmf_cfg80211_arm_vif_event(p2p->cfg, NULL); + goto fail; + } + + /* wait for firmware event */ + err = brcmf_cfg80211_wait_vif_event_timeout(p2p->cfg, BRCMF_E_IF_ADD, + msecs_to_jiffies(1500)); + brcmf_cfg80211_arm_vif_event(p2p->cfg, NULL); + if (!err) { + brcmf_err("timeout occurred\n"); + err = -EIO; + goto fail; + } + + /* discovery interface created */ + p2p_ifp = p2p_vif->ifp; + p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = p2p_vif; + memcpy(p2p_ifp->mac_addr, p2p->dev_addr, ETH_ALEN); + memcpy(&p2p_vif->wdev.address, p2p->dev_addr, sizeof(p2p->dev_addr)); + + /* verify bsscfg index for P2P discovery */ + err = brcmf_fil_iovar_int_get(pri_ifp, "p2p_dev", &bssidx); + if (err < 0) { + brcmf_err("retrieving discover bsscfg index failed\n"); + goto fail; + } + + WARN_ON(p2p_ifp->bssidx != bssidx); + + init_completion(&p2p->send_af_done); + INIT_WORK(&p2p->afx_hdl.afx_work, brcmf_p2p_afx_handler); + init_completion(&p2p->afx_hdl.act_frm_scan); + init_completion(&p2p->wait_next_af); + + return &p2p_vif->wdev; + +fail: + brcmf_free_vif(p2p_vif); + return ERR_PTR(err); +} + +/** + * brcmf_p2p_delete_p2pdev() - delete P2P_DEVICE virtual interface. + * + * @vif: virtual interface object to delete. + */ +static void brcmf_p2p_delete_p2pdev(struct brcmf_p2p_info *p2p, + struct brcmf_cfg80211_vif *vif) +{ + cfg80211_unregister_wdev(&vif->wdev); + p2p->bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL; + brcmf_free_vif(vif); +} + +/** + * brcmf_p2p_add_vif() - create a new P2P virtual interface. + * + * @wiphy: wiphy device of new interface. + * @name: name of the new interface. + * @type: nl80211 interface type. + * @flags: not used. + * @params: contains mac address for P2P device. + */ +struct wireless_dev *brcmf_p2p_add_vif(struct wiphy *wiphy, const char *name, + enum nl80211_iftype type, u32 *flags, + struct vif_params *params) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg)); + struct brcmf_cfg80211_vif *vif; + enum brcmf_fil_p2p_if_types iftype; + int err; + + if (brcmf_cfg80211_vif_event_armed(cfg)) + return ERR_PTR(-EBUSY); + + brcmf_dbg(INFO, "adding vif \"%s\" (type=%d)\n", name, type); + + switch (type) { + case NL80211_IFTYPE_P2P_CLIENT: + iftype = BRCMF_FIL_P2P_IF_CLIENT; + break; + case NL80211_IFTYPE_P2P_GO: + iftype = BRCMF_FIL_P2P_IF_GO; + break; + case NL80211_IFTYPE_P2P_DEVICE: + return brcmf_p2p_create_p2pdev(&cfg->p2p, wiphy, + params->macaddr); + default: + return ERR_PTR(-EOPNOTSUPP); + } + + vif = brcmf_alloc_vif(cfg, type, false); + if (IS_ERR(vif)) + return (struct wireless_dev *)vif; + brcmf_cfg80211_arm_vif_event(cfg, vif); + + err = brcmf_p2p_request_p2p_if(&cfg->p2p, ifp, cfg->p2p.int_addr, + iftype); + if (err) { + brcmf_cfg80211_arm_vif_event(cfg, NULL); + goto fail; + } + + /* wait for firmware event */ + err = brcmf_cfg80211_wait_vif_event_timeout(cfg, BRCMF_E_IF_ADD, + msecs_to_jiffies(1500)); + brcmf_cfg80211_arm_vif_event(cfg, NULL); + if (!err) { + brcmf_err("timeout occurred\n"); + err = -EIO; + goto fail; + } + + /* interface created in firmware */ + ifp = vif->ifp; + if (!ifp) { + brcmf_err("no if pointer provided\n"); + err = -ENOENT; + goto fail; + } + + strncpy(ifp->ndev->name, name, sizeof(ifp->ndev->name) - 1); + err = brcmf_net_attach(ifp, true); + if (err) { + brcmf_err("Registering netdevice failed\n"); + goto fail; + } + + cfg->p2p.bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = vif; + /* Disable firmware roaming for P2P interface */ + brcmf_fil_iovar_int_set(ifp, "roam_off", 1); + if (iftype == BRCMF_FIL_P2P_IF_GO) { + /* set station timeout for p2p */ + brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCB_TIMEOUT, + BRCMF_SCB_TIMEOUT_VALUE); + } + return &ifp->vif->wdev; + +fail: + brcmf_free_vif(vif); + return ERR_PTR(err); +} + +/** + * brcmf_p2p_del_vif() - delete a P2P virtual interface. + * + * @wiphy: wiphy device of interface. + * @wdev: wireless device of interface. + */ +int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev) +{ + struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy); + struct brcmf_p2p_info *p2p = &cfg->p2p; + struct brcmf_cfg80211_vif *vif; + unsigned long jiffie_timeout = msecs_to_jiffies(1500); + bool wait_for_disable = false; + int err; + + brcmf_dbg(TRACE, "delete P2P vif\n"); + vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev); + + switch (vif->wdev.iftype) { + case NL80211_IFTYPE_P2P_CLIENT: + if (test_bit(BRCMF_VIF_STATUS_DISCONNECTING, &vif->sme_state)) + wait_for_disable = true; + break; + + case NL80211_IFTYPE_P2P_GO: + if (!brcmf_p2p_disable_p2p_if(vif)) + wait_for_disable = true; + break; + + case NL80211_IFTYPE_P2P_DEVICE: + brcmf_p2p_delete_p2pdev(p2p, vif); + return 0; + default: + return -ENOTSUPP; + break; + } + + clear_bit(BRCMF_P2P_STATUS_GO_NEG_PHASE, &p2p->status); + brcmf_dbg(INFO, "P2P: GO_NEG_PHASE status cleared\n"); + + if (wait_for_disable) + wait_for_completion_timeout(&cfg->vif_disabled, + msecs_to_jiffies(500)); + + brcmf_vif_clear_mgmt_ies(vif); + + brcmf_cfg80211_arm_vif_event(cfg, vif); + err = brcmf_p2p_release_p2p_if(vif); + if (!err) { + /* wait for firmware event */ + err = brcmf_cfg80211_wait_vif_event_timeout(cfg, BRCMF_E_IF_DEL, + jiffie_timeout); + if (!err) + err = -EIO; + else + err = 0; + } + brcmf_cfg80211_arm_vif_event(cfg, NULL); + p2p->bss_idx[P2PAPI_BSSCFG_CONNECTION].vif = NULL; + + return err; +} + +int brcmf_p2p_start_device(struct wiphy *wiphy, struct wireless_dev *wdev) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct brcmf_p2p_info *p2p = &cfg->p2p; + struct brcmf_cfg80211_vif *vif; + int err; + + vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev); + mutex_lock(&cfg->usr_sync); + err = brcmf_p2p_enable_discovery(p2p); + if (!err) + set_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state); + mutex_unlock(&cfg->usr_sync); + return err; +} + +void brcmf_p2p_stop_device(struct wiphy *wiphy, struct wireless_dev *wdev) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct brcmf_p2p_info *p2p = &cfg->p2p; + struct brcmf_cfg80211_vif *vif; + + vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev); + mutex_lock(&cfg->usr_sync); + (void)brcmf_p2p_deinit_discovery(p2p); + brcmf_abort_scanning(cfg); + clear_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state); + mutex_unlock(&cfg->usr_sync); +} diff --git a/drivers/net/wireless/brcm80211/brcmfmac/p2p.h b/drivers/net/wireless/brcm80211/brcmfmac/p2p.h new file mode 100644 index 00000000000..6821b26224b --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/p2p.h @@ -0,0 +1,183 @@ +/* + * Copyright (c) 2012 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#ifndef WL_CFGP2P_H_ +#define WL_CFGP2P_H_ + +#include <net/cfg80211.h> + +struct brcmf_cfg80211_info; + +/** + * enum p2p_bss_type - different type of BSS configurations. + * + * @P2PAPI_BSSCFG_PRIMARY: maps to driver's primary bsscfg. + * @P2PAPI_BSSCFG_DEVICE: maps to driver's P2P device discovery bsscfg. + * @P2PAPI_BSSCFG_CONNECTION: maps to driver's P2P connection bsscfg. + * @P2PAPI_BSSCFG_MAX: used for range checking. + */ +enum p2p_bss_type { + P2PAPI_BSSCFG_PRIMARY, /* maps to driver's primary bsscfg */ + P2PAPI_BSSCFG_DEVICE, /* maps to driver's P2P device discovery bsscfg */ + P2PAPI_BSSCFG_CONNECTION, /* maps to driver's P2P connection bsscfg */ + P2PAPI_BSSCFG_MAX +}; + +/** + * struct p2p_bss - peer-to-peer bss related information. + * + * @vif: virtual interface of this P2P bss. + * @private_data: TBD + */ +struct p2p_bss { + struct brcmf_cfg80211_vif *vif; + void *private_data; +}; + +/** + * enum brcmf_p2p_status - P2P specific dongle status. + * + * @BRCMF_P2P_STATUS_IF_ADD: peer-to-peer vif add sent to dongle. + * @BRCMF_P2P_STATUS_IF_DEL: NOT-USED? + * @BRCMF_P2P_STATUS_IF_DELETING: peer-to-peer vif delete sent to dongle. + * @BRCMF_P2P_STATUS_IF_CHANGING: peer-to-peer vif change sent to dongle. + * @BRCMF_P2P_STATUS_IF_CHANGED: peer-to-peer vif change completed on dongle. + * @BRCMF_P2P_STATUS_ACTION_TX_COMPLETED: action frame tx completed. + * @BRCMF_P2P_STATUS_ACTION_TX_NOACK: action frame tx not acked. + * @BRCMF_P2P_STATUS_GO_NEG_PHASE: P2P GO negotiation ongoing. + * @BRCMF_P2P_STATUS_DISCOVER_LISTEN: P2P listen, remaining on channel. + * @BRCMF_P2P_STATUS_SENDING_ACT_FRAME: In the process of sending action frame. + * @BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN: extra listen time for af tx. + * @BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME: waiting for action frame response. + * @BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL: search channel for AF active. + */ +enum brcmf_p2p_status { + BRCMF_P2P_STATUS_ENABLED, + BRCMF_P2P_STATUS_IF_ADD, + BRCMF_P2P_STATUS_IF_DEL, + BRCMF_P2P_STATUS_IF_DELETING, + BRCMF_P2P_STATUS_IF_CHANGING, + BRCMF_P2P_STATUS_IF_CHANGED, + BRCMF_P2P_STATUS_ACTION_TX_COMPLETED, + BRCMF_P2P_STATUS_ACTION_TX_NOACK, + BRCMF_P2P_STATUS_GO_NEG_PHASE, + BRCMF_P2P_STATUS_DISCOVER_LISTEN, + BRCMF_P2P_STATUS_SENDING_ACT_FRAME, + BRCMF_P2P_STATUS_WAITING_NEXT_AF_LISTEN, + BRCMF_P2P_STATUS_WAITING_NEXT_ACT_FRAME, + BRCMF_P2P_STATUS_FINDING_COMMON_CHANNEL +}; + +/** + * struct afx_hdl - action frame off channel storage. + * + * @afx_work: worker thread for searching channel + * @act_frm_scan: thread synchronizing struct. + * @is_active: channel searching active. + * @peer_chan: current channel. + * @is_listen: sets mode for afx worker. + * @my_listen_chan: this peers listen channel. + * @peer_listen_chan: remote peers listen channel. + * @tx_dst_addr: mac address where tx af should be sent to. + */ +struct afx_hdl { + struct work_struct afx_work; + struct completion act_frm_scan; + bool is_active; + s32 peer_chan; + bool is_listen; + u16 my_listen_chan; + u16 peer_listen_chan; + u8 tx_dst_addr[ETH_ALEN]; +}; + +/** + * struct brcmf_p2p_info - p2p specific driver information. + * + * @cfg: driver private data for cfg80211 interface. + * @status: status of P2P (see enum brcmf_p2p_status). + * @dev_addr: P2P device address. + * @int_addr: P2P interface address. + * @bss_idx: informate for P2P bss types. + * @listen_timer: timer for @WL_P2P_DISC_ST_LISTEN discover state. + * @ssid: ssid for P2P GO. + * @listen_channel: channel for @WL_P2P_DISC_ST_LISTEN discover state. + * @remain_on_channel: contains copy of struct used by cfg80211. + * @remain_on_channel_cookie: cookie counter for remain on channel cmd + * @next_af_subtype: expected action frame subtype. + * @send_af_done: indication that action frame tx is complete. + * @afx_hdl: action frame search handler info. + * @af_sent_channel: channel action frame is sent. + * @af_tx_sent_jiffies: jiffies time when af tx was transmitted. + * @wait_next_af: thread synchronizing struct. + * @gon_req_action: about to send go negotiation requets frame. + * @block_gon_req_tx: drop tx go negotiation requets frame. + */ +struct brcmf_p2p_info { + struct brcmf_cfg80211_info *cfg; + unsigned long status; + u8 dev_addr[ETH_ALEN]; + u8 int_addr[ETH_ALEN]; + struct p2p_bss bss_idx[P2PAPI_BSSCFG_MAX]; + struct timer_list listen_timer; + struct brcmf_ssid ssid; + u8 listen_channel; + struct ieee80211_channel remain_on_channel; + u32 remain_on_channel_cookie; + u8 next_af_subtype; + struct completion send_af_done; + struct afx_hdl afx_hdl; + u32 af_sent_channel; + unsigned long af_tx_sent_jiffies; + struct completion wait_next_af; + bool gon_req_action; + bool block_gon_req_tx; +}; + +s32 brcmf_p2p_attach(struct brcmf_cfg80211_info *cfg); +void brcmf_p2p_detach(struct brcmf_p2p_info *p2p); +struct wireless_dev *brcmf_p2p_add_vif(struct wiphy *wiphy, const char *name, + enum nl80211_iftype type, u32 *flags, + struct vif_params *params); +int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev); +int brcmf_p2p_ifchange(struct brcmf_cfg80211_info *cfg, + enum brcmf_fil_p2p_if_types if_type); +int brcmf_p2p_start_device(struct wiphy *wiphy, struct wireless_dev *wdev); +void brcmf_p2p_stop_device(struct wiphy *wiphy, struct wireless_dev *wdev); +int brcmf_p2p_scan_prep(struct wiphy *wiphy, + struct cfg80211_scan_request *request, + struct brcmf_cfg80211_vif *vif); +int brcmf_p2p_remain_on_channel(struct wiphy *wiphy, struct wireless_dev *wdev, + struct ieee80211_channel *channel, + unsigned int duration, u64 *cookie); +int brcmf_p2p_notify_listen_complete(struct brcmf_if *ifp, + const struct brcmf_event_msg *e, + void *data); +void brcmf_p2p_cancel_remain_on_channel(struct brcmf_if *ifp); +int brcmf_p2p_notify_action_frame_rx(struct brcmf_if *ifp, + const struct brcmf_event_msg *e, + void *data); +int brcmf_p2p_notify_action_tx_complete(struct brcmf_if *ifp, + const struct brcmf_event_msg *e, + void *data); +bool brcmf_p2p_send_action_frame(struct brcmf_cfg80211_info *cfg, + struct net_device *ndev, + struct brcmf_fil_af_params_le *af_params); +bool brcmf_p2p_scan_finding_common_channel(struct brcmf_cfg80211_info *cfg, + struct brcmf_bss_info_le *bi); +s32 brcmf_p2p_notify_rx_mgmt_p2p_probereq(struct brcmf_if *ifp, + const struct brcmf_event_msg *e, + void *data); +#endif /* WL_CFGP2P_H_ */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/proto.c b/drivers/net/wireless/brcm80211/brcmfmac/proto.c new file mode 100644 index 00000000000..b6b46418494 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/proto.c @@ -0,0 +1,62 @@ +/* + * Copyright (c) 2013 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + + + #include <linux/types.h> +#include <linux/slab.h> +#include <linux/netdevice.h> + +#include <brcmu_wifi.h> +#include "dhd.h" +#include "dhd_dbg.h" +#include "proto.h" +#include "bcdc.h" + + +int brcmf_proto_attach(struct brcmf_pub *drvr) +{ + struct brcmf_proto *proto; + + proto = kzalloc(sizeof(*proto), GFP_ATOMIC); + if (!proto) + goto fail; + + drvr->proto = proto; + /* BCDC protocol is only protocol supported for the moment */ + if (brcmf_proto_bcdc_attach(drvr)) + goto fail; + + if ((proto->txdata == NULL) || (proto->hdrpull == NULL) || + (proto->query_dcmd == NULL) || (proto->set_dcmd == NULL)) { + brcmf_err("Not all proto handlers have been installed\n"); + goto fail; + } + return 0; + +fail: + kfree(proto); + drvr->proto = NULL; + return -ENOMEM; +} + +void brcmf_proto_detach(struct brcmf_pub *drvr) +{ + if (drvr->proto) { + brcmf_proto_bcdc_detach(drvr); + kfree(drvr->proto); + drvr->proto = NULL; + } +} diff --git a/drivers/net/wireless/brcm80211/brcmfmac/proto.h b/drivers/net/wireless/brcm80211/brcmfmac/proto.h new file mode 100644 index 00000000000..482fb0ba4a3 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/proto.h @@ -0,0 +1,57 @@ +/* + * Copyright (c) 2013 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#ifndef BRCMFMAC_PROTO_H +#define BRCMFMAC_PROTO_H + +struct brcmf_proto { + int (*hdrpull)(struct brcmf_pub *drvr, bool do_fws, u8 *ifidx, + struct sk_buff *skb); + int (*query_dcmd)(struct brcmf_pub *drvr, int ifidx, uint cmd, + void *buf, uint len); + int (*set_dcmd)(struct brcmf_pub *drvr, int ifidx, uint cmd, void *buf, + uint len); + int (*txdata)(struct brcmf_pub *drvr, int ifidx, u8 offset, + struct sk_buff *skb); + void *pd; +}; + + +int brcmf_proto_attach(struct brcmf_pub *drvr); +void brcmf_proto_detach(struct brcmf_pub *drvr); + +static inline int brcmf_proto_hdrpull(struct brcmf_pub *drvr, bool do_fws, + u8 *ifidx, struct sk_buff *skb) +{ + return drvr->proto->hdrpull(drvr, do_fws, ifidx, skb); +} +static inline int brcmf_proto_query_dcmd(struct brcmf_pub *drvr, int ifidx, + uint cmd, void *buf, uint len) +{ + return drvr->proto->query_dcmd(drvr, ifidx, cmd, buf, len); +} +static inline int brcmf_proto_set_dcmd(struct brcmf_pub *drvr, int ifidx, + uint cmd, void *buf, uint len) +{ + return drvr->proto->set_dcmd(drvr, ifidx, cmd, buf, len); +} +static inline int brcmf_proto_txdata(struct brcmf_pub *drvr, int ifidx, + u8 offset, struct sk_buff *skb) +{ + return drvr->proto->txdata(drvr, ifidx, offset, skb); +} + + +#endif /* BRCMFMAC_PROTO_H */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/sdio_host.h b/drivers/net/wireless/brcm80211/brcmfmac/sdio_host.h new file mode 100644 index 00000000000..3deab7959a0 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/sdio_host.h @@ -0,0 +1,334 @@ +/* + * Copyright (c) 2010 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef _BRCM_SDH_H_ +#define _BRCM_SDH_H_ + +#include <linux/skbuff.h> + +#define SDIO_FUNC_0 0 +#define SDIO_FUNC_1 1 +#define SDIO_FUNC_2 2 + +#define SDIOD_FBR_SIZE 0x100 + +/* io_en */ +#define SDIO_FUNC_ENABLE_1 0x02 +#define SDIO_FUNC_ENABLE_2 0x04 + +/* io_rdys */ +#define SDIO_FUNC_READY_1 0x02 +#define SDIO_FUNC_READY_2 0x04 + +/* intr_status */ +#define INTR_STATUS_FUNC1 0x2 +#define INTR_STATUS_FUNC2 0x4 + +/* Maximum number of I/O funcs */ +#define SDIOD_MAX_IOFUNCS 7 + +/* mask of register map */ +#define REG_F0_REG_MASK 0x7FF +#define REG_F1_MISC_MASK 0x1FFFF + +/* as of sdiod rev 0, supports 3 functions */ +#define SBSDIO_NUM_FUNCTION 3 + +/* function 0 vendor specific CCCR registers */ +#define SDIO_CCCR_BRCM_CARDCAP 0xf0 +#define SDIO_CCCR_BRCM_CARDCAP_CMD14_SUPPORT 0x02 +#define SDIO_CCCR_BRCM_CARDCAP_CMD14_EXT 0x04 +#define SDIO_CCCR_BRCM_CARDCAP_CMD_NODEC 0x08 +#define SDIO_CCCR_BRCM_CARDCTRL 0xf1 +#define SDIO_CCCR_BRCM_CARDCTRL_WLANRESET 0x02 +#define SDIO_CCCR_BRCM_SEPINT 0xf2 + +#define SDIO_SEPINT_MASK 0x01 +#define SDIO_SEPINT_OE 0x02 +#define SDIO_SEPINT_ACT_HI 0x04 + +/* function 1 miscellaneous registers */ + +/* sprom command and status */ +#define SBSDIO_SPROM_CS 0x10000 +/* sprom info register */ +#define SBSDIO_SPROM_INFO 0x10001 +/* sprom indirect access data byte 0 */ +#define SBSDIO_SPROM_DATA_LOW 0x10002 +/* sprom indirect access data byte 1 */ +#define SBSDIO_SPROM_DATA_HIGH 0x10003 +/* sprom indirect access addr byte 0 */ +#define SBSDIO_SPROM_ADDR_LOW 0x10004 +/* sprom indirect access addr byte 0 */ +#define SBSDIO_SPROM_ADDR_HIGH 0x10005 +/* xtal_pu (gpio) output */ +#define SBSDIO_CHIP_CTRL_DATA 0x10006 +/* xtal_pu (gpio) enable */ +#define SBSDIO_CHIP_CTRL_EN 0x10007 +/* rev < 7, watermark for sdio device */ +#define SBSDIO_WATERMARK 0x10008 +/* control busy signal generation */ +#define SBSDIO_DEVICE_CTL 0x10009 + +/* SB Address Window Low (b15) */ +#define SBSDIO_FUNC1_SBADDRLOW 0x1000A +/* SB Address Window Mid (b23:b16) */ +#define SBSDIO_FUNC1_SBADDRMID 0x1000B +/* SB Address Window High (b31:b24) */ +#define SBSDIO_FUNC1_SBADDRHIGH 0x1000C +/* Frame Control (frame term/abort) */ +#define SBSDIO_FUNC1_FRAMECTRL 0x1000D +/* ChipClockCSR (ALP/HT ctl/status) */ +#define SBSDIO_FUNC1_CHIPCLKCSR 0x1000E +/* SdioPullUp (on cmd, d0-d2) */ +#define SBSDIO_FUNC1_SDIOPULLUP 0x1000F +/* Write Frame Byte Count Low */ +#define SBSDIO_FUNC1_WFRAMEBCLO 0x10019 +/* Write Frame Byte Count High */ +#define SBSDIO_FUNC1_WFRAMEBCHI 0x1001A +/* Read Frame Byte Count Low */ +#define SBSDIO_FUNC1_RFRAMEBCLO 0x1001B +/* Read Frame Byte Count High */ +#define SBSDIO_FUNC1_RFRAMEBCHI 0x1001C +/* MesBusyCtl (rev 11) */ +#define SBSDIO_FUNC1_MESBUSYCTRL 0x1001D +/* Sdio Core Rev 12 */ +#define SBSDIO_FUNC1_WAKEUPCTRL 0x1001E +#define SBSDIO_FUNC1_WCTRL_ALPWAIT_MASK 0x1 +#define SBSDIO_FUNC1_WCTRL_ALPWAIT_SHIFT 0 +#define SBSDIO_FUNC1_WCTRL_HTWAIT_MASK 0x2 +#define SBSDIO_FUNC1_WCTRL_HTWAIT_SHIFT 1 +#define SBSDIO_FUNC1_SLEEPCSR 0x1001F +#define SBSDIO_FUNC1_SLEEPCSR_KSO_MASK 0x1 +#define SBSDIO_FUNC1_SLEEPCSR_KSO_SHIFT 0 +#define SBSDIO_FUNC1_SLEEPCSR_KSO_EN 1 +#define SBSDIO_FUNC1_SLEEPCSR_DEVON_MASK 0x2 +#define SBSDIO_FUNC1_SLEEPCSR_DEVON_SHIFT 1 + +#define SBSDIO_FUNC1_MISC_REG_START 0x10000 /* f1 misc register start */ +#define SBSDIO_FUNC1_MISC_REG_LIMIT 0x1001F /* f1 misc register end */ + +/* function 1 OCP space */ + +/* sb offset addr is <= 15 bits, 32k */ +#define SBSDIO_SB_OFT_ADDR_MASK 0x07FFF +#define SBSDIO_SB_OFT_ADDR_LIMIT 0x08000 +/* with b15, maps to 32-bit SB access */ +#define SBSDIO_SB_ACCESS_2_4B_FLAG 0x08000 + +/* valid bits in SBSDIO_FUNC1_SBADDRxxx regs */ + +#define SBSDIO_SBADDRLOW_MASK 0x80 /* Valid bits in SBADDRLOW */ +#define SBSDIO_SBADDRMID_MASK 0xff /* Valid bits in SBADDRMID */ +#define SBSDIO_SBADDRHIGH_MASK 0xffU /* Valid bits in SBADDRHIGH */ +/* Address bits from SBADDR regs */ +#define SBSDIO_SBWINDOW_MASK 0xffff8000 + +#define SDIOH_READ 0 /* Read request */ +#define SDIOH_WRITE 1 /* Write request */ + +#define SDIOH_DATA_FIX 0 /* Fixed addressing */ +#define SDIOH_DATA_INC 1 /* Incremental addressing */ + +/* internal return code */ +#define SUCCESS 0 +#define ERROR 1 + +/* Packet alignment for most efficient SDIO (can change based on platform) */ +#define BRCMF_SDALIGN (1 << 6) + +/* watchdog polling interval in ms */ +#define BRCMF_WD_POLL_MS 10 + +struct brcmf_sdreg { + int func; + int offset; + int value; +}; + +struct brcmf_sdio; + +struct brcmf_sdio_dev { + struct sdio_func *func[SDIO_MAX_FUNCS]; + u8 num_funcs; /* Supported funcs on client */ + u32 sbwad; /* Save backplane window address */ + struct brcmf_sdio *bus; + atomic_t suspend; /* suspend flag */ + wait_queue_head_t request_word_wait; + wait_queue_head_t request_buffer_wait; + struct device *dev; + struct brcmf_bus *bus_if; + struct brcmfmac_sdio_platform_data *pdata; + bool oob_irq_requested; + bool irq_en; /* irq enable flags */ + spinlock_t irq_en_lock; + bool irq_wake; /* irq wake enable flags */ + bool sg_support; + uint max_request_size; + ushort max_segment_count; + uint max_segment_size; + uint txglomsz; + struct sg_table sgtable; +}; + +/* sdio core registers */ +struct sdpcmd_regs { + u32 corecontrol; /* 0x00, rev8 */ + u32 corestatus; /* rev8 */ + u32 PAD[1]; + u32 biststatus; /* rev8 */ + + /* PCMCIA access */ + u16 pcmciamesportaladdr; /* 0x010, rev8 */ + u16 PAD[1]; + u16 pcmciamesportalmask; /* rev8 */ + u16 PAD[1]; + u16 pcmciawrframebc; /* rev8 */ + u16 PAD[1]; + u16 pcmciaunderflowtimer; /* rev8 */ + u16 PAD[1]; + + /* interrupt */ + u32 intstatus; /* 0x020, rev8 */ + u32 hostintmask; /* rev8 */ + u32 intmask; /* rev8 */ + u32 sbintstatus; /* rev8 */ + u32 sbintmask; /* rev8 */ + u32 funcintmask; /* rev4 */ + u32 PAD[2]; + u32 tosbmailbox; /* 0x040, rev8 */ + u32 tohostmailbox; /* rev8 */ + u32 tosbmailboxdata; /* rev8 */ + u32 tohostmailboxdata; /* rev8 */ + + /* synchronized access to registers in SDIO clock domain */ + u32 sdioaccess; /* 0x050, rev8 */ + u32 PAD[3]; + + /* PCMCIA frame control */ + u8 pcmciaframectrl; /* 0x060, rev8 */ + u8 PAD[3]; + u8 pcmciawatermark; /* rev8 */ + u8 PAD[155]; + + /* interrupt batching control */ + u32 intrcvlazy; /* 0x100, rev8 */ + u32 PAD[3]; + + /* counters */ + u32 cmd52rd; /* 0x110, rev8 */ + u32 cmd52wr; /* rev8 */ + u32 cmd53rd; /* rev8 */ + u32 cmd53wr; /* rev8 */ + u32 abort; /* rev8 */ + u32 datacrcerror; /* rev8 */ + u32 rdoutofsync; /* rev8 */ + u32 wroutofsync; /* rev8 */ + u32 writebusy; /* rev8 */ + u32 readwait; /* rev8 */ + u32 readterm; /* rev8 */ + u32 writeterm; /* rev8 */ + u32 PAD[40]; + u32 clockctlstatus; /* rev8 */ + u32 PAD[7]; + + u32 PAD[128]; /* DMA engines */ + + /* SDIO/PCMCIA CIS region */ + char cis[512]; /* 0x400-0x5ff, rev6 */ + + /* PCMCIA function control registers */ + char pcmciafcr[256]; /* 0x600-6ff, rev6 */ + u16 PAD[55]; + + /* PCMCIA backplane access */ + u16 backplanecsr; /* 0x76E, rev6 */ + u16 backplaneaddr0; /* rev6 */ + u16 backplaneaddr1; /* rev6 */ + u16 backplaneaddr2; /* rev6 */ + u16 backplaneaddr3; /* rev6 */ + u16 backplanedata0; /* rev6 */ + u16 backplanedata1; /* rev6 */ + u16 backplanedata2; /* rev6 */ + u16 backplanedata3; /* rev6 */ + u16 PAD[31]; + + /* sprom "size" & "blank" info */ + u16 spromstatus; /* 0x7BE, rev2 */ + u32 PAD[464]; + + u16 PAD[0x80]; +}; + +/* Register/deregister interrupt handler. */ +int brcmf_sdiod_intr_register(struct brcmf_sdio_dev *sdiodev); +int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev); + +/* sdio device register access interface */ +u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret); +u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret); +void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr, u8 data, + int *ret); +void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr, u32 data, + int *ret); + +/* Buffer transfer to/from device (client) core via cmd53. + * fn: function number + * flags: backplane width, address increment, sync/async + * buf: pointer to memory data buffer + * nbytes: number of bytes to transfer to/from buf + * pkt: pointer to packet associated with buf (if any) + * complete: callback function for command completion (async only) + * handle: handle for completion callback (first arg in callback) + * Returns 0 or error code. + * NOTE: Async operation is not currently supported. + */ +int brcmf_sdiod_send_pkt(struct brcmf_sdio_dev *sdiodev, + struct sk_buff_head *pktq); +int brcmf_sdiod_send_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes); + +int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt); +int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes); +int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev, + struct sk_buff_head *pktq, uint totlen); + +/* Flags bits */ + +/* Four-byte target (backplane) width (vs. two-byte) */ +#define SDIO_REQ_4BYTE 0x1 +/* Fixed address (FIFO) (vs. incrementing address) */ +#define SDIO_REQ_FIXED 0x2 + +/* Read/write to memory block (F1, no FIFO) via CMD53 (sync only). + * rw: read or write (0/1) + * addr: direct SDIO address + * buf: pointer to memory data buffer + * nbytes: number of bytes to transfer to/from buf + * Returns 0 or error code. + */ +int brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address, + u8 *data, uint size); + +/* Issue an abort to the specified function */ +int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn); + +struct brcmf_sdio *brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev); +void brcmf_sdio_remove(struct brcmf_sdio *bus); +void brcmf_sdio_isr(struct brcmf_sdio *bus); + +void brcmf_sdio_wd_timer(struct brcmf_sdio *bus, uint wdtick); + +#endif /* _BRCM_SDH_H_ */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/tracepoint.c b/drivers/net/wireless/brcm80211/brcmfmac/tracepoint.c new file mode 100644 index 00000000000..b505db48c60 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/tracepoint.c @@ -0,0 +1,22 @@ +/* + * Copyright (c) 2012 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <linux/module.h> /* bug in tracepoint.h, it should include this */ + +#ifndef __CHECKER__ +#define CREATE_TRACE_POINTS +#include "tracepoint.h" +#endif diff --git a/drivers/net/wireless/brcm80211/brcmfmac/tracepoint.h b/drivers/net/wireless/brcm80211/brcmfmac/tracepoint.h new file mode 100644 index 00000000000..4d7d51f9571 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/tracepoint.h @@ -0,0 +1,152 @@ +/* + * Copyright (c) 2013 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#if !defined(BRCMF_TRACEPOINT_H_) || defined(TRACE_HEADER_MULTI_READ) +#define BRCMF_TRACEPOINT_H_ + +#include <linux/types.h> +#include <linux/tracepoint.h> + +#ifndef CONFIG_BRCM_TRACING + +#undef TRACE_EVENT +#define TRACE_EVENT(name, proto, ...) \ +static inline void trace_ ## name(proto) {} + +#undef DECLARE_EVENT_CLASS +#define DECLARE_EVENT_CLASS(...) + +#undef DEFINE_EVENT +#define DEFINE_EVENT(evt_class, name, proto, ...) \ +static inline void trace_ ## name(proto) {} + +#endif /* CONFIG_BRCM_TRACING */ + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM brcmfmac + +#define MAX_MSG_LEN 100 + +TRACE_EVENT(brcmf_err, + TP_PROTO(const char *func, struct va_format *vaf), + TP_ARGS(func, vaf), + TP_STRUCT__entry( + __string(func, func) + __dynamic_array(char, msg, MAX_MSG_LEN) + ), + TP_fast_assign( + __assign_str(func, func); + WARN_ON_ONCE(vsnprintf(__get_dynamic_array(msg), + MAX_MSG_LEN, vaf->fmt, + *vaf->va) >= MAX_MSG_LEN); + ), + TP_printk("%s: %s", __get_str(func), __get_str(msg)) +); + +TRACE_EVENT(brcmf_dbg, + TP_PROTO(u32 level, const char *func, struct va_format *vaf), + TP_ARGS(level, func, vaf), + TP_STRUCT__entry( + __field(u32, level) + __string(func, func) + __dynamic_array(char, msg, MAX_MSG_LEN) + ), + TP_fast_assign( + __entry->level = level; + __assign_str(func, func); + WARN_ON_ONCE(vsnprintf(__get_dynamic_array(msg), + MAX_MSG_LEN, vaf->fmt, + *vaf->va) >= MAX_MSG_LEN); + ), + TP_printk("%s: %s", __get_str(func), __get_str(msg)) +); + +TRACE_EVENT(brcmf_hexdump, + TP_PROTO(void *data, size_t len), + TP_ARGS(data, len), + TP_STRUCT__entry( + __field(unsigned long, len) + __field(unsigned long, addr) + __dynamic_array(u8, hdata, len) + ), + TP_fast_assign( + __entry->len = len; + __entry->addr = (unsigned long)data; + memcpy(__get_dynamic_array(hdata), data, len); + ), + TP_printk("hexdump [addr=%lx, length=%lu]", __entry->addr, __entry->len) +); + +TRACE_EVENT(brcmf_bcdchdr, + TP_PROTO(void *data), + TP_ARGS(data), + TP_STRUCT__entry( + __field(u8, flags) + __field(u8, prio) + __field(u8, flags2) + __field(u32, siglen) + __dynamic_array(u8, signal, *((u8 *)data + 3) * 4) + ), + TP_fast_assign( + __entry->flags = *(u8 *)data; + __entry->prio = *((u8 *)data + 1); + __entry->flags2 = *((u8 *)data + 2); + __entry->siglen = *((u8 *)data + 3) * 4; + memcpy(__get_dynamic_array(signal), + (u8 *)data + 4, __entry->siglen); + ), + TP_printk("bcdc: prio=%d siglen=%d", __entry->prio, __entry->siglen) +); + +#ifndef SDPCM_RX +#define SDPCM_RX 0 +#endif +#ifndef SDPCM_TX +#define SDPCM_TX 1 +#endif +#ifndef SDPCM_GLOM +#define SDPCM_GLOM 2 +#endif + +TRACE_EVENT(brcmf_sdpcm_hdr, + TP_PROTO(u8 dir, void *data), + TP_ARGS(dir, data), + TP_STRUCT__entry( + __field(u8, dir) + __field(u16, len) + __dynamic_array(u8, hdr, dir == SDPCM_GLOM ? 20 : 12) + ), + TP_fast_assign( + memcpy(__get_dynamic_array(hdr), data, dir == SDPCM_GLOM ? 20 : 12); + __entry->len = *(u8 *)data | (*((u8 *)data + 1) << 8); + __entry->dir = dir; + ), + TP_printk("sdpcm: %s len %u, seq %d", + __entry->dir == SDPCM_RX ? "RX" : "TX", + __entry->len, ((u8 *)__get_dynamic_array(hdr))[4]) +); + +#ifdef CONFIG_BRCM_TRACING + +#undef TRACE_INCLUDE_PATH +#define TRACE_INCLUDE_PATH . +#undef TRACE_INCLUDE_FILE +#define TRACE_INCLUDE_FILE tracepoint + +#include <trace/define_trace.h> + +#endif /* CONFIG_BRCM_TRACING */ + +#endif /* BRCMF_TRACEPOINT_H_ */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/usb.c b/drivers/net/wireless/brcm80211/brcmfmac/usb.c new file mode 100644 index 00000000000..d06fcb05adf --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/usb.c @@ -0,0 +1,1448 @@ +/* + * Copyright (c) 2011 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/firmware.h> +#include <linux/usb.h> +#include <linux/vmalloc.h> + +#include <brcmu_utils.h> +#include <brcmu_wifi.h> +#include <dhd_bus.h> +#include <dhd_dbg.h> + +#include "firmware.h" +#include "usb_rdl.h" +#include "usb.h" + +#define IOCTL_RESP_TIMEOUT 2000 + +#define BRCMF_USB_RESET_GETVER_SPINWAIT 100 /* in unit of ms */ +#define BRCMF_USB_RESET_GETVER_LOOP_CNT 10 + +#define BRCMF_POSTBOOT_ID 0xA123 /* ID to detect if dongle + has boot up */ +#define BRCMF_USB_NRXQ 50 +#define BRCMF_USB_NTXQ 50 + +#define CONFIGDESC(usb) (&((usb)->actconfig)->desc) +#define IFPTR(usb, idx) ((usb)->actconfig->interface[(idx)]) +#define IFALTS(usb, idx) (IFPTR((usb), (idx))->altsetting[0]) +#define IFDESC(usb, idx) IFALTS((usb), (idx)).desc +#define IFEPDESC(usb, idx, ep) (IFALTS((usb), (idx)).endpoint[(ep)]).desc + +#define CONTROL_IF 0 +#define BULK_IF 0 + +#define BRCMF_USB_CBCTL_WRITE 0 +#define BRCMF_USB_CBCTL_READ 1 +#define BRCMF_USB_MAX_PKT_SIZE 1600 + +#define BRCMF_USB_43143_FW_NAME "brcm/brcmfmac43143.bin" +#define BRCMF_USB_43236_FW_NAME "brcm/brcmfmac43236b.bin" +#define BRCMF_USB_43242_FW_NAME "brcm/brcmfmac43242a.bin" + +struct brcmf_usb_image { + struct list_head list; + s8 *fwname; + u8 *image; + int image_len; +}; + +struct brcmf_usbdev_info { + struct brcmf_usbdev bus_pub; /* MUST BE FIRST */ + spinlock_t qlock; + struct list_head rx_freeq; + struct list_head rx_postq; + struct list_head tx_freeq; + struct list_head tx_postq; + uint rx_pipe, tx_pipe, rx_pipe2; + + int rx_low_watermark; + int tx_low_watermark; + int tx_high_watermark; + int tx_freecount; + bool tx_flowblock; + spinlock_t tx_flowblock_lock; + + struct brcmf_usbreq *tx_reqs; + struct brcmf_usbreq *rx_reqs; + + const u8 *image; /* buffer for combine fw and nvram */ + int image_len; + + struct usb_device *usbdev; + struct device *dev; + + int ctl_in_pipe, ctl_out_pipe; + struct urb *ctl_urb; /* URB for control endpoint */ + struct usb_ctrlrequest ctl_write; + struct usb_ctrlrequest ctl_read; + u32 ctl_urb_actual_length; + int ctl_urb_status; + int ctl_completed; + wait_queue_head_t ioctl_resp_wait; + ulong ctl_op; + + struct urb *bulk_urb; /* used for FW download */ +}; + +static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, + struct brcmf_usbreq *req); + +static struct brcmf_usbdev *brcmf_usb_get_buspub(struct device *dev) +{ + struct brcmf_bus *bus_if = dev_get_drvdata(dev); + return bus_if->bus_priv.usb; +} + +static struct brcmf_usbdev_info *brcmf_usb_get_businfo(struct device *dev) +{ + return brcmf_usb_get_buspub(dev)->devinfo; +} + +static int brcmf_usb_ioctl_resp_wait(struct brcmf_usbdev_info *devinfo) +{ + return wait_event_timeout(devinfo->ioctl_resp_wait, + devinfo->ctl_completed, + msecs_to_jiffies(IOCTL_RESP_TIMEOUT)); +} + +static void brcmf_usb_ioctl_resp_wake(struct brcmf_usbdev_info *devinfo) +{ + if (waitqueue_active(&devinfo->ioctl_resp_wait)) + wake_up(&devinfo->ioctl_resp_wait); +} + +static void +brcmf_usb_ctl_complete(struct brcmf_usbdev_info *devinfo, int type, int status) +{ + brcmf_dbg(USB, "Enter, status=%d\n", status); + + if (unlikely(devinfo == NULL)) + return; + + if (type == BRCMF_USB_CBCTL_READ) { + if (status == 0) + devinfo->bus_pub.stats.rx_ctlpkts++; + else + devinfo->bus_pub.stats.rx_ctlerrs++; + } else if (type == BRCMF_USB_CBCTL_WRITE) { + if (status == 0) + devinfo->bus_pub.stats.tx_ctlpkts++; + else + devinfo->bus_pub.stats.tx_ctlerrs++; + } + + devinfo->ctl_urb_status = status; + devinfo->ctl_completed = true; + brcmf_usb_ioctl_resp_wake(devinfo); +} + +static void +brcmf_usb_ctlread_complete(struct urb *urb) +{ + struct brcmf_usbdev_info *devinfo = + (struct brcmf_usbdev_info *)urb->context; + + brcmf_dbg(USB, "Enter\n"); + devinfo->ctl_urb_actual_length = urb->actual_length; + brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_READ, + urb->status); +} + +static void +brcmf_usb_ctlwrite_complete(struct urb *urb) +{ + struct brcmf_usbdev_info *devinfo = + (struct brcmf_usbdev_info *)urb->context; + + brcmf_dbg(USB, "Enter\n"); + brcmf_usb_ctl_complete(devinfo, BRCMF_USB_CBCTL_WRITE, + urb->status); +} + +static int +brcmf_usb_send_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) +{ + int ret; + u16 size; + + brcmf_dbg(USB, "Enter\n"); + if (devinfo == NULL || buf == NULL || + len == 0 || devinfo->ctl_urb == NULL) + return -EINVAL; + + size = len; + devinfo->ctl_write.wLength = cpu_to_le16p(&size); + devinfo->ctl_urb->transfer_buffer_length = size; + devinfo->ctl_urb_status = 0; + devinfo->ctl_urb_actual_length = 0; + + usb_fill_control_urb(devinfo->ctl_urb, + devinfo->usbdev, + devinfo->ctl_out_pipe, + (unsigned char *) &devinfo->ctl_write, + buf, size, + (usb_complete_t)brcmf_usb_ctlwrite_complete, + devinfo); + + ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); + if (ret < 0) + brcmf_err("usb_submit_urb failed %d\n", ret); + + return ret; +} + +static int +brcmf_usb_recv_ctl(struct brcmf_usbdev_info *devinfo, u8 *buf, int len) +{ + int ret; + u16 size; + + brcmf_dbg(USB, "Enter\n"); + if ((devinfo == NULL) || (buf == NULL) || (len == 0) + || (devinfo->ctl_urb == NULL)) + return -EINVAL; + + size = len; + devinfo->ctl_read.wLength = cpu_to_le16p(&size); + devinfo->ctl_urb->transfer_buffer_length = size; + + devinfo->ctl_read.bRequestType = USB_DIR_IN + | USB_TYPE_CLASS | USB_RECIP_INTERFACE; + devinfo->ctl_read.bRequest = 1; + + usb_fill_control_urb(devinfo->ctl_urb, + devinfo->usbdev, + devinfo->ctl_in_pipe, + (unsigned char *) &devinfo->ctl_read, + buf, size, + (usb_complete_t)brcmf_usb_ctlread_complete, + devinfo); + + ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); + if (ret < 0) + brcmf_err("usb_submit_urb failed %d\n", ret); + + return ret; +} + +static int brcmf_usb_tx_ctlpkt(struct device *dev, u8 *buf, u32 len) +{ + int err = 0; + int timeout = 0; + struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); + + brcmf_dbg(USB, "Enter\n"); + if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) + return -EIO; + + if (test_and_set_bit(0, &devinfo->ctl_op)) + return -EIO; + + devinfo->ctl_completed = false; + err = brcmf_usb_send_ctl(devinfo, buf, len); + if (err) { + brcmf_err("fail %d bytes: %d\n", err, len); + clear_bit(0, &devinfo->ctl_op); + return err; + } + timeout = brcmf_usb_ioctl_resp_wait(devinfo); + clear_bit(0, &devinfo->ctl_op); + if (!timeout) { + brcmf_err("Txctl wait timed out\n"); + err = -EIO; + } + return err; +} + +static int brcmf_usb_rx_ctlpkt(struct device *dev, u8 *buf, u32 len) +{ + int err = 0; + int timeout = 0; + struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); + + brcmf_dbg(USB, "Enter\n"); + if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) + return -EIO; + + if (test_and_set_bit(0, &devinfo->ctl_op)) + return -EIO; + + devinfo->ctl_completed = false; + err = brcmf_usb_recv_ctl(devinfo, buf, len); + if (err) { + brcmf_err("fail %d bytes: %d\n", err, len); + clear_bit(0, &devinfo->ctl_op); + return err; + } + timeout = brcmf_usb_ioctl_resp_wait(devinfo); + err = devinfo->ctl_urb_status; + clear_bit(0, &devinfo->ctl_op); + if (!timeout) { + brcmf_err("rxctl wait timed out\n"); + err = -EIO; + } + if (!err) + return devinfo->ctl_urb_actual_length; + else + return err; +} + +static struct brcmf_usbreq *brcmf_usb_deq(struct brcmf_usbdev_info *devinfo, + struct list_head *q, int *counter) +{ + unsigned long flags; + struct brcmf_usbreq *req; + spin_lock_irqsave(&devinfo->qlock, flags); + if (list_empty(q)) { + spin_unlock_irqrestore(&devinfo->qlock, flags); + return NULL; + } + req = list_entry(q->next, struct brcmf_usbreq, list); + list_del_init(q->next); + if (counter) + (*counter)--; + spin_unlock_irqrestore(&devinfo->qlock, flags); + return req; + +} + +static void brcmf_usb_enq(struct brcmf_usbdev_info *devinfo, + struct list_head *q, struct brcmf_usbreq *req, + int *counter) +{ + unsigned long flags; + spin_lock_irqsave(&devinfo->qlock, flags); + list_add_tail(&req->list, q); + if (counter) + (*counter)++; + spin_unlock_irqrestore(&devinfo->qlock, flags); +} + +static struct brcmf_usbreq * +brcmf_usbdev_qinit(struct list_head *q, int qsize) +{ + int i; + struct brcmf_usbreq *req, *reqs; + + reqs = kcalloc(qsize, sizeof(struct brcmf_usbreq), GFP_ATOMIC); + if (reqs == NULL) + return NULL; + + req = reqs; + + for (i = 0; i < qsize; i++) { + req->urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!req->urb) + goto fail; + + INIT_LIST_HEAD(&req->list); + list_add_tail(&req->list, q); + req++; + } + return reqs; +fail: + brcmf_err("fail!\n"); + while (!list_empty(q)) { + req = list_entry(q->next, struct brcmf_usbreq, list); + if (req && req->urb) + usb_free_urb(req->urb); + list_del(q->next); + } + return NULL; + +} + +static void brcmf_usb_free_q(struct list_head *q, bool pending) +{ + struct brcmf_usbreq *req, *next; + int i = 0; + list_for_each_entry_safe(req, next, q, list) { + if (!req->urb) { + brcmf_err("bad req\n"); + break; + } + i++; + if (pending) { + usb_kill_urb(req->urb); + } else { + usb_free_urb(req->urb); + list_del_init(&req->list); + } + } +} + +static void brcmf_usb_del_fromq(struct brcmf_usbdev_info *devinfo, + struct brcmf_usbreq *req) +{ + unsigned long flags; + + spin_lock_irqsave(&devinfo->qlock, flags); + list_del_init(&req->list); + spin_unlock_irqrestore(&devinfo->qlock, flags); +} + + +static void brcmf_usb_tx_complete(struct urb *urb) +{ + struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; + struct brcmf_usbdev_info *devinfo = req->devinfo; + unsigned long flags; + + brcmf_dbg(USB, "Enter, urb->status=%d, skb=%p\n", urb->status, + req->skb); + brcmf_usb_del_fromq(devinfo, req); + + brcmf_txcomplete(devinfo->dev, req->skb, urb->status == 0); + req->skb = NULL; + brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, &devinfo->tx_freecount); + spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); + if (devinfo->tx_freecount > devinfo->tx_high_watermark && + devinfo->tx_flowblock) { + brcmf_txflowblock(devinfo->dev, false); + devinfo->tx_flowblock = false; + } + spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); +} + +static void brcmf_usb_rx_complete(struct urb *urb) +{ + struct brcmf_usbreq *req = (struct brcmf_usbreq *)urb->context; + struct brcmf_usbdev_info *devinfo = req->devinfo; + struct sk_buff *skb; + + brcmf_dbg(USB, "Enter, urb->status=%d\n", urb->status); + brcmf_usb_del_fromq(devinfo, req); + skb = req->skb; + req->skb = NULL; + + /* zero lenght packets indicate usb "failure". Do not refill */ + if (urb->status != 0 || !urb->actual_length) { + brcmu_pkt_buf_free_skb(skb); + brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); + return; + } + + if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) { + skb_put(skb, urb->actual_length); + brcmf_rx_frame(devinfo->dev, skb); + brcmf_usb_rx_refill(devinfo, req); + } else { + brcmu_pkt_buf_free_skb(skb); + brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); + } + return; + +} + +static void brcmf_usb_rx_refill(struct brcmf_usbdev_info *devinfo, + struct brcmf_usbreq *req) +{ + struct sk_buff *skb; + int ret; + + if (!req || !devinfo) + return; + + skb = dev_alloc_skb(devinfo->bus_pub.bus_mtu); + if (!skb) { + brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); + return; + } + req->skb = skb; + + usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->rx_pipe, + skb->data, skb_tailroom(skb), brcmf_usb_rx_complete, + req); + req->devinfo = devinfo; + brcmf_usb_enq(devinfo, &devinfo->rx_postq, req, NULL); + + ret = usb_submit_urb(req->urb, GFP_ATOMIC); + if (ret) { + brcmf_usb_del_fromq(devinfo, req); + brcmu_pkt_buf_free_skb(req->skb); + req->skb = NULL; + brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL); + } + return; +} + +static void brcmf_usb_rx_fill_all(struct brcmf_usbdev_info *devinfo) +{ + struct brcmf_usbreq *req; + + if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { + brcmf_err("bus is not up=%d\n", devinfo->bus_pub.state); + return; + } + while ((req = brcmf_usb_deq(devinfo, &devinfo->rx_freeq, NULL)) != NULL) + brcmf_usb_rx_refill(devinfo, req); +} + +static void +brcmf_usb_state_change(struct brcmf_usbdev_info *devinfo, int state) +{ + struct brcmf_bus *bcmf_bus = devinfo->bus_pub.bus; + int old_state; + + brcmf_dbg(USB, "Enter, current state=%d, new state=%d\n", + devinfo->bus_pub.state, state); + + if (devinfo->bus_pub.state == state) + return; + + old_state = devinfo->bus_pub.state; + devinfo->bus_pub.state = state; + + /* update state of upper layer */ + if (state == BRCMFMAC_USB_STATE_DOWN) { + brcmf_dbg(USB, "DBUS is down\n"); + brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_DOWN); + } else if (state == BRCMFMAC_USB_STATE_UP) { + brcmf_dbg(USB, "DBUS is up\n"); + brcmf_bus_change_state(bcmf_bus, BRCMF_BUS_DATA); + } else { + brcmf_dbg(USB, "DBUS current state=%d\n", state); + } +} + +static int brcmf_usb_tx(struct device *dev, struct sk_buff *skb) +{ + struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); + struct brcmf_usbreq *req; + int ret; + unsigned long flags; + + brcmf_dbg(USB, "Enter, skb=%p\n", skb); + if (devinfo->bus_pub.state != BRCMFMAC_USB_STATE_UP) { + ret = -EIO; + goto fail; + } + + req = brcmf_usb_deq(devinfo, &devinfo->tx_freeq, + &devinfo->tx_freecount); + if (!req) { + brcmf_err("no req to send\n"); + ret = -ENOMEM; + goto fail; + } + + req->skb = skb; + req->devinfo = devinfo; + usb_fill_bulk_urb(req->urb, devinfo->usbdev, devinfo->tx_pipe, + skb->data, skb->len, brcmf_usb_tx_complete, req); + req->urb->transfer_flags |= URB_ZERO_PACKET; + brcmf_usb_enq(devinfo, &devinfo->tx_postq, req, NULL); + ret = usb_submit_urb(req->urb, GFP_ATOMIC); + if (ret) { + brcmf_err("brcmf_usb_tx usb_submit_urb FAILED\n"); + brcmf_usb_del_fromq(devinfo, req); + req->skb = NULL; + brcmf_usb_enq(devinfo, &devinfo->tx_freeq, req, + &devinfo->tx_freecount); + goto fail; + } + + spin_lock_irqsave(&devinfo->tx_flowblock_lock, flags); + if (devinfo->tx_freecount < devinfo->tx_low_watermark && + !devinfo->tx_flowblock) { + brcmf_txflowblock(dev, true); + devinfo->tx_flowblock = true; + } + spin_unlock_irqrestore(&devinfo->tx_flowblock_lock, flags); + return 0; + +fail: + return ret; +} + + +static int brcmf_usb_up(struct device *dev) +{ + struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); + u16 ifnum; + + brcmf_dbg(USB, "Enter\n"); + if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_UP) + return 0; + + /* Success, indicate devinfo is fully up */ + brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_UP); + + if (devinfo->ctl_urb) { + devinfo->ctl_in_pipe = usb_rcvctrlpipe(devinfo->usbdev, 0); + devinfo->ctl_out_pipe = usb_sndctrlpipe(devinfo->usbdev, 0); + + ifnum = IFDESC(devinfo->usbdev, CONTROL_IF).bInterfaceNumber; + + /* CTL Write */ + devinfo->ctl_write.bRequestType = + USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE; + devinfo->ctl_write.bRequest = 0; + devinfo->ctl_write.wValue = cpu_to_le16(0); + devinfo->ctl_write.wIndex = cpu_to_le16p(&ifnum); + + /* CTL Read */ + devinfo->ctl_read.bRequestType = + USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE; + devinfo->ctl_read.bRequest = 1; + devinfo->ctl_read.wValue = cpu_to_le16(0); + devinfo->ctl_read.wIndex = cpu_to_le16p(&ifnum); + } + brcmf_usb_rx_fill_all(devinfo); + return 0; +} + +static void brcmf_usb_down(struct device *dev) +{ + struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(dev); + + brcmf_dbg(USB, "Enter\n"); + if (devinfo == NULL) + return; + + if (devinfo->bus_pub.state == BRCMFMAC_USB_STATE_DOWN) + return; + + brcmf_usb_state_change(devinfo, BRCMFMAC_USB_STATE_DOWN); + + if (devinfo->ctl_urb) + usb_kill_urb(devinfo->ctl_urb); + + if (devinfo->bulk_urb) + usb_kill_urb(devinfo->bulk_urb); + brcmf_usb_free_q(&devinfo->tx_postq, true); + + brcmf_usb_free_q(&devinfo->rx_postq, true); +} + +static void +brcmf_usb_sync_complete(struct urb *urb) +{ + struct brcmf_usbdev_info *devinfo = + (struct brcmf_usbdev_info *)urb->context; + + devinfo->ctl_completed = true; + brcmf_usb_ioctl_resp_wake(devinfo); +} + +static bool brcmf_usb_dl_cmd(struct brcmf_usbdev_info *devinfo, u8 cmd, + void *buffer, int buflen) +{ + int ret = 0; + char *tmpbuf; + u16 size; + + if ((!devinfo) || (devinfo->ctl_urb == NULL)) + return false; + + tmpbuf = kmalloc(buflen, GFP_ATOMIC); + if (!tmpbuf) + return false; + + size = buflen; + devinfo->ctl_urb->transfer_buffer_length = size; + + devinfo->ctl_read.wLength = cpu_to_le16p(&size); + devinfo->ctl_read.bRequestType = USB_DIR_IN | USB_TYPE_VENDOR | + USB_RECIP_INTERFACE; + devinfo->ctl_read.bRequest = cmd; + + usb_fill_control_urb(devinfo->ctl_urb, + devinfo->usbdev, + usb_rcvctrlpipe(devinfo->usbdev, 0), + (unsigned char *) &devinfo->ctl_read, + (void *) tmpbuf, size, + (usb_complete_t)brcmf_usb_sync_complete, devinfo); + + devinfo->ctl_completed = false; + ret = usb_submit_urb(devinfo->ctl_urb, GFP_ATOMIC); + if (ret < 0) { + brcmf_err("usb_submit_urb failed %d\n", ret); + kfree(tmpbuf); + return false; + } + + ret = brcmf_usb_ioctl_resp_wait(devinfo); + memcpy(buffer, tmpbuf, buflen); + kfree(tmpbuf); + + return ret; +} + +static bool +brcmf_usb_dlneeded(struct brcmf_usbdev_info *devinfo) +{ + struct bootrom_id_le id; + u32 chipid, chiprev; + + brcmf_dbg(USB, "Enter\n"); + + if (devinfo == NULL) + return false; + + /* Check if firmware downloaded already by querying runtime ID */ + id.chip = cpu_to_le32(0xDEAD); + brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); + + chipid = le32_to_cpu(id.chip); + chiprev = le32_to_cpu(id.chiprev); + + if ((chipid & 0x4300) == 0x4300) + brcmf_dbg(USB, "chip %x rev 0x%x\n", chipid, chiprev); + else + brcmf_dbg(USB, "chip %d rev 0x%x\n", chipid, chiprev); + if (chipid == BRCMF_POSTBOOT_ID) { + brcmf_dbg(USB, "firmware already downloaded\n"); + brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); + return false; + } else { + devinfo->bus_pub.devid = chipid; + devinfo->bus_pub.chiprev = chiprev; + } + return true; +} + +static int +brcmf_usb_resetcfg(struct brcmf_usbdev_info *devinfo) +{ + struct bootrom_id_le id; + u32 loop_cnt; + + brcmf_dbg(USB, "Enter\n"); + + loop_cnt = 0; + do { + mdelay(BRCMF_USB_RESET_GETVER_SPINWAIT); + loop_cnt++; + id.chip = cpu_to_le32(0xDEAD); /* Get the ID */ + brcmf_usb_dl_cmd(devinfo, DL_GETVER, &id, sizeof(id)); + if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) + break; + } while (loop_cnt < BRCMF_USB_RESET_GETVER_LOOP_CNT); + + if (id.chip == cpu_to_le32(BRCMF_POSTBOOT_ID)) { + brcmf_dbg(USB, "postboot chip 0x%x/rev 0x%x\n", + le32_to_cpu(id.chip), le32_to_cpu(id.chiprev)); + + brcmf_usb_dl_cmd(devinfo, DL_RESETCFG, &id, sizeof(id)); + return 0; + } else { + brcmf_err("Cannot talk to Dongle. Firmware is not UP, %d ms\n", + BRCMF_USB_RESET_GETVER_SPINWAIT * loop_cnt); + return -EINVAL; + } +} + + +static int +brcmf_usb_dl_send_bulk(struct brcmf_usbdev_info *devinfo, void *buffer, int len) +{ + int ret; + + if ((devinfo == NULL) || (devinfo->bulk_urb == NULL)) + return -EINVAL; + + /* Prepare the URB */ + usb_fill_bulk_urb(devinfo->bulk_urb, devinfo->usbdev, + devinfo->tx_pipe, buffer, len, + (usb_complete_t)brcmf_usb_sync_complete, devinfo); + + devinfo->bulk_urb->transfer_flags |= URB_ZERO_PACKET; + + devinfo->ctl_completed = false; + ret = usb_submit_urb(devinfo->bulk_urb, GFP_ATOMIC); + if (ret) { + brcmf_err("usb_submit_urb failed %d\n", ret); + return ret; + } + ret = brcmf_usb_ioctl_resp_wait(devinfo); + return (ret == 0); +} + +static int +brcmf_usb_dl_writeimage(struct brcmf_usbdev_info *devinfo, u8 *fw, int fwlen) +{ + unsigned int sendlen, sent, dllen; + char *bulkchunk = NULL, *dlpos; + struct rdl_state_le state; + u32 rdlstate, rdlbytes; + int err = 0; + + brcmf_dbg(USB, "Enter, fw %p, len %d\n", fw, fwlen); + + bulkchunk = kmalloc(RDL_CHUNK, GFP_ATOMIC); + if (bulkchunk == NULL) { + err = -ENOMEM; + goto fail; + } + + /* 1) Prepare USB boot loader for runtime image */ + brcmf_usb_dl_cmd(devinfo, DL_START, &state, + sizeof(struct rdl_state_le)); + + rdlstate = le32_to_cpu(state.state); + rdlbytes = le32_to_cpu(state.bytes); + + /* 2) Check we are in the Waiting state */ + if (rdlstate != DL_WAITING) { + brcmf_err("Failed to DL_START\n"); + err = -EINVAL; + goto fail; + } + sent = 0; + dlpos = fw; + dllen = fwlen; + + /* Get chip id and rev */ + while (rdlbytes != dllen) { + /* Wait until the usb device reports it received all + * the bytes we sent */ + if ((rdlbytes == sent) && (rdlbytes != dllen)) { + if ((dllen-sent) < RDL_CHUNK) + sendlen = dllen-sent; + else + sendlen = RDL_CHUNK; + + /* simply avoid having to send a ZLP by ensuring we + * never have an even + * multiple of 64 + */ + if (!(sendlen % 64)) + sendlen -= 4; + + /* send data */ + memcpy(bulkchunk, dlpos, sendlen); + if (brcmf_usb_dl_send_bulk(devinfo, bulkchunk, + sendlen)) { + brcmf_err("send_bulk failed\n"); + err = -EINVAL; + goto fail; + } + + dlpos += sendlen; + sent += sendlen; + } + if (!brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, + sizeof(struct rdl_state_le))) { + brcmf_err("DL_GETSTATE Failed xxxx\n"); + err = -EINVAL; + goto fail; + } + + rdlstate = le32_to_cpu(state.state); + rdlbytes = le32_to_cpu(state.bytes); + + /* restart if an error is reported */ + if (rdlstate == DL_BAD_HDR || rdlstate == DL_BAD_CRC) { + brcmf_err("Bad Hdr or Bad CRC state %d\n", + rdlstate); + err = -EINVAL; + goto fail; + } + } + +fail: + kfree(bulkchunk); + brcmf_dbg(USB, "Exit, err=%d\n", err); + return err; +} + +static int brcmf_usb_dlstart(struct brcmf_usbdev_info *devinfo, u8 *fw, int len) +{ + int err; + + brcmf_dbg(USB, "Enter\n"); + + if (devinfo == NULL) + return -EINVAL; + + if (devinfo->bus_pub.devid == 0xDEAD) + return -EINVAL; + + err = brcmf_usb_dl_writeimage(devinfo, fw, len); + if (err == 0) + devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_DONE; + else + devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DL_FAIL; + brcmf_dbg(USB, "Exit, err=%d\n", err); + + return err; +} + +static int brcmf_usb_dlrun(struct brcmf_usbdev_info *devinfo) +{ + struct rdl_state_le state; + + brcmf_dbg(USB, "Enter\n"); + if (!devinfo) + return -EINVAL; + + if (devinfo->bus_pub.devid == 0xDEAD) + return -EINVAL; + + /* Check we are runnable */ + brcmf_usb_dl_cmd(devinfo, DL_GETSTATE, &state, + sizeof(struct rdl_state_le)); + + /* Start the image */ + if (state.state == cpu_to_le32(DL_RUNNABLE)) { + if (!brcmf_usb_dl_cmd(devinfo, DL_GO, &state, + sizeof(struct rdl_state_le))) + return -ENODEV; + if (brcmf_usb_resetcfg(devinfo)) + return -ENODEV; + /* The Dongle may go for re-enumeration. */ + } else { + brcmf_err("Dongle not runnable\n"); + return -EINVAL; + } + brcmf_dbg(USB, "Exit\n"); + return 0; +} + +static bool brcmf_usb_chip_support(int chipid, int chiprev) +{ + switch(chipid) { + case 43143: + return true; + case 43235: + case 43236: + case 43238: + return (chiprev == 3); + case 43242: + return true; + default: + break; + } + return false; +} + +static int +brcmf_usb_fw_download(struct brcmf_usbdev_info *devinfo) +{ + int devid, chiprev; + int err; + + brcmf_dbg(USB, "Enter\n"); + if (devinfo == NULL) + return -ENODEV; + + devid = devinfo->bus_pub.devid; + chiprev = devinfo->bus_pub.chiprev; + + if (!brcmf_usb_chip_support(devid, chiprev)) { + brcmf_err("unsupported chip %d rev %d\n", + devid, chiprev); + return -EINVAL; + } + + if (!devinfo->image) { + brcmf_err("No firmware!\n"); + return -ENOENT; + } + + err = brcmf_usb_dlstart(devinfo, + (u8 *)devinfo->image, devinfo->image_len); + if (err == 0) + err = brcmf_usb_dlrun(devinfo); + return err; +} + + +static void brcmf_usb_detach(struct brcmf_usbdev_info *devinfo) +{ + brcmf_dbg(USB, "Enter, devinfo %p\n", devinfo); + + /* free the URBS */ + brcmf_usb_free_q(&devinfo->rx_freeq, false); + brcmf_usb_free_q(&devinfo->tx_freeq, false); + + usb_free_urb(devinfo->ctl_urb); + usb_free_urb(devinfo->bulk_urb); + + kfree(devinfo->tx_reqs); + kfree(devinfo->rx_reqs); +} + +#define TRX_MAGIC 0x30524448 /* "HDR0" */ +#define TRX_VERSION 1 /* Version 1 */ +#define TRX_MAX_LEN 0x3B0000 /* Max length */ +#define TRX_NO_HEADER 1 /* Do not write TRX header */ +#define TRX_MAX_OFFSET 3 /* Max number of individual files */ +#define TRX_UNCOMP_IMAGE 0x20 /* Trx contains uncompressed image */ + +struct trx_header_le { + __le32 magic; /* "HDR0" */ + __le32 len; /* Length of file including header */ + __le32 crc32; /* CRC from flag_version to end of file */ + __le32 flag_version; /* 0:15 flags, 16:31 version */ + __le32 offsets[TRX_MAX_OFFSET]; /* Offsets of partitions from start of + * header */ +}; + +static int check_file(const u8 *headers) +{ + struct trx_header_le *trx; + int actual_len = -1; + + brcmf_dbg(USB, "Enter\n"); + /* Extract trx header */ + trx = (struct trx_header_le *) headers; + if (trx->magic != cpu_to_le32(TRX_MAGIC)) + return -1; + + headers += sizeof(struct trx_header_le); + + if (le32_to_cpu(trx->flag_version) & TRX_UNCOMP_IMAGE) { + actual_len = le32_to_cpu(trx->offsets[TRX_OFFSETS_DLFWLEN_IDX]); + return actual_len + sizeof(struct trx_header_le); + } + return -1; +} + +static const char *brcmf_usb_get_fwname(struct brcmf_usbdev_info *devinfo) +{ + switch (devinfo->bus_pub.devid) { + case 43143: + return BRCMF_USB_43143_FW_NAME; + case 43235: + case 43236: + case 43238: + return BRCMF_USB_43236_FW_NAME; + case 43242: + return BRCMF_USB_43242_FW_NAME; + default: + return NULL; + } +} + + +static +struct brcmf_usbdev *brcmf_usb_attach(struct brcmf_usbdev_info *devinfo, + int nrxq, int ntxq) +{ + brcmf_dbg(USB, "Enter\n"); + + devinfo->bus_pub.nrxq = nrxq; + devinfo->rx_low_watermark = nrxq / 2; + devinfo->bus_pub.devinfo = devinfo; + devinfo->bus_pub.ntxq = ntxq; + devinfo->bus_pub.state = BRCMFMAC_USB_STATE_DOWN; + + /* flow control when too many tx urbs posted */ + devinfo->tx_low_watermark = ntxq / 4; + devinfo->tx_high_watermark = devinfo->tx_low_watermark * 3; + devinfo->bus_pub.bus_mtu = BRCMF_USB_MAX_PKT_SIZE; + + /* Initialize other structure content */ + init_waitqueue_head(&devinfo->ioctl_resp_wait); + + /* Initialize the spinlocks */ + spin_lock_init(&devinfo->qlock); + spin_lock_init(&devinfo->tx_flowblock_lock); + + INIT_LIST_HEAD(&devinfo->rx_freeq); + INIT_LIST_HEAD(&devinfo->rx_postq); + + INIT_LIST_HEAD(&devinfo->tx_freeq); + INIT_LIST_HEAD(&devinfo->tx_postq); + + devinfo->tx_flowblock = false; + + devinfo->rx_reqs = brcmf_usbdev_qinit(&devinfo->rx_freeq, nrxq); + if (!devinfo->rx_reqs) + goto error; + + devinfo->tx_reqs = brcmf_usbdev_qinit(&devinfo->tx_freeq, ntxq); + if (!devinfo->tx_reqs) + goto error; + devinfo->tx_freecount = ntxq; + + devinfo->ctl_urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!devinfo->ctl_urb) { + brcmf_err("usb_alloc_urb (ctl) failed\n"); + goto error; + } + devinfo->bulk_urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!devinfo->bulk_urb) { + brcmf_err("usb_alloc_urb (bulk) failed\n"); + goto error; + } + + return &devinfo->bus_pub; + +error: + brcmf_err("failed!\n"); + brcmf_usb_detach(devinfo); + return NULL; +} + +static struct brcmf_bus_ops brcmf_usb_bus_ops = { + .txdata = brcmf_usb_tx, + .stop = brcmf_usb_down, + .txctl = brcmf_usb_tx_ctlpkt, + .rxctl = brcmf_usb_rx_ctlpkt, +}; + +static int brcmf_usb_bus_setup(struct brcmf_usbdev_info *devinfo) +{ + int ret; + + /* Attach to the common driver interface */ + ret = brcmf_attach(devinfo->dev); + if (ret) { + brcmf_err("brcmf_attach failed\n"); + return ret; + } + + ret = brcmf_usb_up(devinfo->dev); + if (ret) + goto fail; + + ret = brcmf_bus_start(devinfo->dev); + if (ret) + goto fail; + + return 0; +fail: + brcmf_detach(devinfo->dev); + return ret; +} + +static void brcmf_usb_probe_phase2(struct device *dev, + const struct firmware *fw, + void *nvram, u32 nvlen) +{ + struct brcmf_bus *bus = dev_get_drvdata(dev); + struct brcmf_usbdev_info *devinfo; + int ret; + + brcmf_dbg(USB, "Start fw downloading\n"); + ret = check_file(fw->data); + if (ret < 0) { + brcmf_err("invalid firmware\n"); + release_firmware(fw); + goto error; + } + + devinfo = bus->bus_priv.usb->devinfo; + devinfo->image = fw->data; + devinfo->image_len = fw->size; + + ret = brcmf_usb_fw_download(devinfo); + release_firmware(fw); + if (ret) + goto error; + + ret = brcmf_usb_bus_setup(devinfo); + if (ret) + goto error; + + return; +error: + brcmf_dbg(TRACE, "failed: dev=%s, err=%d\n", dev_name(dev), ret); + device_release_driver(dev); +} + +static int brcmf_usb_probe_cb(struct brcmf_usbdev_info *devinfo) +{ + struct brcmf_bus *bus = NULL; + struct brcmf_usbdev *bus_pub = NULL; + struct device *dev = devinfo->dev; + int ret; + + brcmf_dbg(USB, "Enter\n"); + bus_pub = brcmf_usb_attach(devinfo, BRCMF_USB_NRXQ, BRCMF_USB_NTXQ); + if (!bus_pub) + return -ENODEV; + + bus = kzalloc(sizeof(struct brcmf_bus), GFP_ATOMIC); + if (!bus) { + ret = -ENOMEM; + goto fail; + } + + bus->dev = dev; + bus_pub->bus = bus; + bus->bus_priv.usb = bus_pub; + dev_set_drvdata(dev, bus); + bus->ops = &brcmf_usb_bus_ops; + bus->proto_type = BRCMF_PROTO_BCDC; + bus->always_use_fws_queue = true; + + if (!brcmf_usb_dlneeded(devinfo)) { + ret = brcmf_usb_bus_setup(devinfo); + if (ret) + goto fail; + } + bus->chip = bus_pub->devid; + bus->chiprev = bus_pub->chiprev; + + /* request firmware here */ + brcmf_fw_get_firmwares(dev, 0, brcmf_usb_get_fwname(devinfo), NULL, + brcmf_usb_probe_phase2); + return 0; + +fail: + /* Release resources in reverse order */ + kfree(bus); + brcmf_usb_detach(devinfo); + return ret; +} + +static void +brcmf_usb_disconnect_cb(struct brcmf_usbdev_info *devinfo) +{ + if (!devinfo) + return; + brcmf_dbg(USB, "Enter, bus_pub %p\n", devinfo); + + brcmf_detach(devinfo->dev); + kfree(devinfo->bus_pub.bus); + brcmf_usb_detach(devinfo); +} + +static int +brcmf_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) +{ + int ep; + struct usb_endpoint_descriptor *endpoint; + int ret = 0; + struct usb_device *usb = interface_to_usbdev(intf); + int num_of_eps; + u8 endpoint_num; + struct brcmf_usbdev_info *devinfo; + + brcmf_dbg(USB, "Enter\n"); + + devinfo = kzalloc(sizeof(*devinfo), GFP_ATOMIC); + if (devinfo == NULL) + return -ENOMEM; + + devinfo->usbdev = usb; + devinfo->dev = &usb->dev; + + usb_set_intfdata(intf, devinfo); + + /* Check that the device supports only one configuration */ + if (usb->descriptor.bNumConfigurations != 1) { + ret = -1; + goto fail; + } + + if (usb->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) { + ret = -1; + goto fail; + } + + /* + * Only the BDC interface configuration is supported: + * Device class: USB_CLASS_VENDOR_SPEC + * if0 class: USB_CLASS_VENDOR_SPEC + * if0/ep0: control + * if0/ep1: bulk in + * if0/ep2: bulk out (ok if swapped with bulk in) + */ + if (CONFIGDESC(usb)->bNumInterfaces != 1) { + ret = -1; + goto fail; + } + + /* Check interface */ + if (IFDESC(usb, CONTROL_IF).bInterfaceClass != USB_CLASS_VENDOR_SPEC || + IFDESC(usb, CONTROL_IF).bInterfaceSubClass != 2 || + IFDESC(usb, CONTROL_IF).bInterfaceProtocol != 0xff) { + brcmf_err("invalid control interface: class %d, subclass %d, proto %d\n", + IFDESC(usb, CONTROL_IF).bInterfaceClass, + IFDESC(usb, CONTROL_IF).bInterfaceSubClass, + IFDESC(usb, CONTROL_IF).bInterfaceProtocol); + ret = -1; + goto fail; + } + + /* Check control endpoint */ + endpoint = &IFEPDESC(usb, CONTROL_IF, 0); + if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) + != USB_ENDPOINT_XFER_INT) { + brcmf_err("invalid control endpoint %d\n", + endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK); + ret = -1; + goto fail; + } + + devinfo->rx_pipe = 0; + devinfo->rx_pipe2 = 0; + devinfo->tx_pipe = 0; + num_of_eps = IFDESC(usb, BULK_IF).bNumEndpoints - 1; + + /* Check data endpoints and get pipes */ + for (ep = 1; ep <= num_of_eps; ep++) { + endpoint = &IFEPDESC(usb, BULK_IF, ep); + if ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != + USB_ENDPOINT_XFER_BULK) { + brcmf_err("invalid data endpoint %d\n", ep); + ret = -1; + goto fail; + } + + endpoint_num = endpoint->bEndpointAddress & + USB_ENDPOINT_NUMBER_MASK; + if ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) + == USB_DIR_IN) { + if (!devinfo->rx_pipe) { + devinfo->rx_pipe = + usb_rcvbulkpipe(usb, endpoint_num); + } else { + devinfo->rx_pipe2 = + usb_rcvbulkpipe(usb, endpoint_num); + } + } else { + devinfo->tx_pipe = usb_sndbulkpipe(usb, endpoint_num); + } + } + + if (usb->speed == USB_SPEED_SUPER) + brcmf_dbg(USB, "Broadcom super speed USB wireless device detected\n"); + else if (usb->speed == USB_SPEED_HIGH) + brcmf_dbg(USB, "Broadcom high speed USB wireless device detected\n"); + else + brcmf_dbg(USB, "Broadcom full speed USB wireless device detected\n"); + + ret = brcmf_usb_probe_cb(devinfo); + if (ret) + goto fail; + + /* Success */ + return 0; + +fail: + brcmf_err("failed with errno %d\n", ret); + kfree(devinfo); + usb_set_intfdata(intf, NULL); + return ret; + +} + +static void +brcmf_usb_disconnect(struct usb_interface *intf) +{ + struct brcmf_usbdev_info *devinfo; + + brcmf_dbg(USB, "Enter\n"); + devinfo = (struct brcmf_usbdev_info *)usb_get_intfdata(intf); + brcmf_usb_disconnect_cb(devinfo); + kfree(devinfo); + brcmf_dbg(USB, "Exit\n"); +} + +/* + * only need to signal the bus being down and update the state. + */ +static int brcmf_usb_suspend(struct usb_interface *intf, pm_message_t state) +{ + struct usb_device *usb = interface_to_usbdev(intf); + struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); + + brcmf_dbg(USB, "Enter\n"); + devinfo->bus_pub.state = BRCMFMAC_USB_STATE_SLEEP; + brcmf_detach(&usb->dev); + return 0; +} + +/* + * (re-) start the bus. + */ +static int brcmf_usb_resume(struct usb_interface *intf) +{ + struct usb_device *usb = interface_to_usbdev(intf); + struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); + + brcmf_dbg(USB, "Enter\n"); + return brcmf_usb_bus_setup(devinfo); +} + +static int brcmf_usb_reset_resume(struct usb_interface *intf) +{ + struct usb_device *usb = interface_to_usbdev(intf); + struct brcmf_usbdev_info *devinfo = brcmf_usb_get_businfo(&usb->dev); + brcmf_dbg(USB, "Enter\n"); + + return brcmf_fw_get_firmwares(&usb->dev, 0, + brcmf_usb_get_fwname(devinfo), NULL, + brcmf_usb_probe_phase2); +} + +#define BRCMF_USB_VENDOR_ID_BROADCOM 0x0a5c +#define BRCMF_USB_DEVICE_ID_43143 0xbd1e +#define BRCMF_USB_DEVICE_ID_43236 0xbd17 +#define BRCMF_USB_DEVICE_ID_43242 0xbd1f +#define BRCMF_USB_DEVICE_ID_BCMFW 0x0bdc + +static struct usb_device_id brcmf_usb_devid_table[] = { + { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_43143) }, + { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_43236) }, + { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_43242) }, + /* special entry for device with firmware loaded and running */ + { USB_DEVICE(BRCMF_USB_VENDOR_ID_BROADCOM, BRCMF_USB_DEVICE_ID_BCMFW) }, + { } +}; + +MODULE_DEVICE_TABLE(usb, brcmf_usb_devid_table); +MODULE_FIRMWARE(BRCMF_USB_43143_FW_NAME); +MODULE_FIRMWARE(BRCMF_USB_43236_FW_NAME); +MODULE_FIRMWARE(BRCMF_USB_43242_FW_NAME); + +static struct usb_driver brcmf_usbdrvr = { + .name = KBUILD_MODNAME, + .probe = brcmf_usb_probe, + .disconnect = brcmf_usb_disconnect, + .id_table = brcmf_usb_devid_table, + .suspend = brcmf_usb_suspend, + .resume = brcmf_usb_resume, + .reset_resume = brcmf_usb_reset_resume, + .supports_autosuspend = 1, + .disable_hub_initiated_lpm = 1, +}; + +static int brcmf_usb_reset_device(struct device *dev, void *notused) +{ + /* device past is the usb interface so we + * need to use parent here. + */ + brcmf_dev_reset(dev->parent); + return 0; +} + +void brcmf_usb_exit(void) +{ + struct device_driver *drv = &brcmf_usbdrvr.drvwrap.driver; + int ret; + + brcmf_dbg(USB, "Enter\n"); + ret = driver_for_each_device(drv, NULL, NULL, + brcmf_usb_reset_device); + usb_deregister(&brcmf_usbdrvr); +} + +void brcmf_usb_register(void) +{ + brcmf_dbg(USB, "Enter\n"); + usb_register(&brcmf_usbdrvr); +} diff --git a/drivers/net/wireless/brcm80211/brcmfmac/usb.h b/drivers/net/wireless/brcm80211/brcmfmac/usb.h new file mode 100644 index 00000000000..f483a8c9945 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/usb.h @@ -0,0 +1,53 @@ +/* + * Copyright (c) 2011 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ +#ifndef BRCMFMAC_USB_H +#define BRCMFMAC_USB_H + +enum brcmf_usb_state { + BRCMFMAC_USB_STATE_DOWN, + BRCMFMAC_USB_STATE_DL_FAIL, + BRCMFMAC_USB_STATE_DL_DONE, + BRCMFMAC_USB_STATE_UP, + BRCMFMAC_USB_STATE_SLEEP +}; + +struct brcmf_stats { + u32 tx_ctlpkts; + u32 tx_ctlerrs; + u32 rx_ctlpkts; + u32 rx_ctlerrs; +}; + +struct brcmf_usbdev { + struct brcmf_bus *bus; + struct brcmf_usbdev_info *devinfo; + enum brcmf_usb_state state; + struct brcmf_stats stats; + int ntxq, nrxq, rxsize; + u32 bus_mtu; + int devid; + int chiprev; /* chip revsion number */ +}; + +/* IO Request Block (IRB) */ +struct brcmf_usbreq { + struct list_head list; + struct brcmf_usbdev_info *devinfo; + struct urb *urb; + struct sk_buff *skb; +}; + +#endif /* BRCMFMAC_USB_H */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/usb_rdl.h b/drivers/net/wireless/brcm80211/brcmfmac/usb_rdl.h new file mode 100644 index 00000000000..0a35c51c3da --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/usb_rdl.h @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2011 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef _USB_RDL_H +#define _USB_RDL_H + +/* Control messages: bRequest values */ +#define DL_GETSTATE 0 /* returns the rdl_state_t struct */ +#define DL_CHECK_CRC 1 /* currently unused */ +#define DL_GO 2 /* execute downloaded image */ +#define DL_START 3 /* initialize dl state */ +#define DL_REBOOT 4 /* reboot the device in 2 seconds */ +#define DL_GETVER 5 /* returns the bootrom_id_t struct */ +#define DL_GO_PROTECTED 6 /* execute the downloaded code and set reset + * event to occur in 2 seconds. It is the + * responsibility of the downloaded code to + * clear this event + */ +#define DL_EXEC 7 /* jump to a supplied address */ +#define DL_RESETCFG 8 /* To support single enum on dongle + * - Not used by bootloader + */ +#define DL_DEFER_RESP_OK 9 /* Potentially defer the response to setup + * if resp unavailable + */ + +/* states */ +#define DL_WAITING 0 /* waiting to rx first pkt */ +#define DL_READY 1 /* hdr was good, waiting for more of the + * compressed image */ +#define DL_BAD_HDR 2 /* hdr was corrupted */ +#define DL_BAD_CRC 3 /* compressed image was corrupted */ +#define DL_RUNNABLE 4 /* download was successful,waiting for go cmd */ +#define DL_START_FAIL 5 /* failed to initialize correctly */ +#define DL_NVRAM_TOOBIG 6 /* host specified nvram data exceeds DL_NVRAM + * value */ +#define DL_IMAGE_TOOBIG 7 /* download image too big (exceeds DATA_START + * for rdl) */ + +struct rdl_state_le { + __le32 state; + __le32 bytes; +}; + +struct bootrom_id_le { + __le32 chip; /* Chip id */ + __le32 chiprev; /* Chip rev */ + __le32 ramsize; /* Size of RAM */ + __le32 remapbase; /* Current remap base address */ + __le32 boardtype; /* Type of board */ + __le32 boardrev; /* Board revision */ +}; + +#define RDL_CHUNK 1500 /* size of each dl transfer */ + +#define TRX_OFFSETS_DLFWLEN_IDX 0 +#define TRX_OFFSETS_JUMPTO_IDX 1 +#define TRX_OFFSETS_NVM_LEN_IDX 2 + +#define TRX_OFFSETS_DLBASE_IDX 0 + +#endif /* _USB_RDL_H */ diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c new file mode 100644 index 00000000000..d8fa276e368 --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c @@ -0,0 +1,5681 @@ +/* + * Copyright (c) 2010 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/* Toplevel file. Relies on dhd_linux.c to send commands to the dongle. */ + +#include <linux/kernel.h> +#include <linux/etherdevice.h> +#include <linux/module.h> +#include <net/cfg80211.h> +#include <net/netlink.h> + +#include <brcmu_utils.h> +#include <defs.h> +#include <brcmu_wifi.h> +#include "dhd.h" +#include "dhd_dbg.h" +#include "tracepoint.h" +#include "fwil_types.h" +#include "p2p.h" +#include "btcoex.h" +#include "wl_cfg80211.h" +#include "fwil.h" + +#define BRCMF_SCAN_IE_LEN_MAX 2048 +#define BRCMF_PNO_VERSION 2 +#define BRCMF_PNO_TIME 30 +#define BRCMF_PNO_REPEAT 4 +#define BRCMF_PNO_FREQ_EXPO_MAX 3 +#define BRCMF_PNO_MAX_PFN_COUNT 16 +#define BRCMF_PNO_ENABLE_ADAPTSCAN_BIT 6 +#define BRCMF_PNO_HIDDEN_BIT 2 +#define BRCMF_PNO_WPA_AUTH_ANY 0xFFFFFFFF +#define BRCMF_PNO_SCAN_COMPLETE 1 +#define BRCMF_PNO_SCAN_INCOMPLETE 0 + +#define BRCMF_IFACE_MAX_CNT 3 + +#define WPA_OUI "\x00\x50\xF2" /* WPA OUI */ +#define WPA_OUI_TYPE 1 +#define RSN_OUI "\x00\x0F\xAC" /* RSN OUI */ +#define WME_OUI_TYPE 2 +#define WPS_OUI_TYPE 4 + +#define VS_IE_FIXED_HDR_LEN 6 +#define WPA_IE_VERSION_LEN 2 +#define WPA_IE_MIN_OUI_LEN 4 +#define WPA_IE_SUITE_COUNT_LEN 2 + +#define WPA_CIPHER_NONE 0 /* None */ +#define WPA_CIPHER_WEP_40 1 /* WEP (40-bit) */ +#define WPA_CIPHER_TKIP 2 /* TKIP: default for WPA */ +#define WPA_CIPHER_AES_CCM 4 /* AES (CCM) */ +#define WPA_CIPHER_WEP_104 5 /* WEP (104-bit) */ + +#define RSN_AKM_NONE 0 /* None (IBSS) */ +#define RSN_AKM_UNSPECIFIED 1 /* Over 802.1x */ +#define RSN_AKM_PSK 2 /* Pre-shared Key */ +#define RSN_CAP_LEN 2 /* Length of RSN capabilities */ +#define RSN_CAP_PTK_REPLAY_CNTR_MASK 0x000C + +#define VNDR_IE_CMD_LEN 4 /* length of the set command + * string :"add", "del" (+ NUL) + */ +#define VNDR_IE_COUNT_OFFSET 4 +#define VNDR_IE_PKTFLAG_OFFSET 8 +#define VNDR_IE_VSIE_OFFSET 12 +#define VNDR_IE_HDR_SIZE 12 +#define VNDR_IE_PARSE_LIMIT 5 + +#define DOT11_MGMT_HDR_LEN 24 /* d11 management header len */ +#define DOT11_BCN_PRB_FIXED_LEN 12 /* beacon/probe fixed length */ + +#define BRCMF_SCAN_JOIN_ACTIVE_DWELL_TIME_MS 320 +#define BRCMF_SCAN_JOIN_PASSIVE_DWELL_TIME_MS 400 +#define BRCMF_SCAN_JOIN_PROBE_INTERVAL_MS 20 + +#define BRCMF_ASSOC_PARAMS_FIXED_SIZE \ + (sizeof(struct brcmf_assoc_params_le) - sizeof(u16)) + +static bool check_vif_up(struct brcmf_cfg80211_vif *vif) +{ + if (!test_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state)) { + brcmf_dbg(INFO, "device is not ready : status (%lu)\n", + vif->sme_state); + return false; + } + return true; +} + +#define CHAN2G(_channel, _freq, _flags) { \ + .band = IEEE80211_BAND_2GHZ, \ + .center_freq = (_freq), \ + .hw_value = (_channel), \ + .flags = (_flags), \ + .max_antenna_gain = 0, \ + .max_power = 30, \ +} + +#define CHAN5G(_channel, _flags) { \ + .band = IEEE80211_BAND_5GHZ, \ + .center_freq = 5000 + (5 * (_channel)), \ + .hw_value = (_channel), \ + .flags = (_flags), \ + .max_antenna_gain = 0, \ + .max_power = 30, \ +} + +#define RATE_TO_BASE100KBPS(rate) (((rate) * 10) / 2) +#define RATETAB_ENT(_rateid, _flags) \ + { \ + .bitrate = RATE_TO_BASE100KBPS(_rateid), \ + .hw_value = (_rateid), \ + .flags = (_flags), \ + } + +static struct ieee80211_rate __wl_rates[] = { + RATETAB_ENT(BRCM_RATE_1M, 0), + RATETAB_ENT(BRCM_RATE_2M, IEEE80211_RATE_SHORT_PREAMBLE), + RATETAB_ENT(BRCM_RATE_5M5, IEEE80211_RATE_SHORT_PREAMBLE), + RATETAB_ENT(BRCM_RATE_11M, IEEE80211_RATE_SHORT_PREAMBLE), + RATETAB_ENT(BRCM_RATE_6M, 0), + RATETAB_ENT(BRCM_RATE_9M, 0), + RATETAB_ENT(BRCM_RATE_12M, 0), + RATETAB_ENT(BRCM_RATE_18M, 0), + RATETAB_ENT(BRCM_RATE_24M, 0), + RATETAB_ENT(BRCM_RATE_36M, 0), + RATETAB_ENT(BRCM_RATE_48M, 0), + RATETAB_ENT(BRCM_RATE_54M, 0), +}; + +#define wl_a_rates (__wl_rates + 4) +#define wl_a_rates_size 8 +#define wl_g_rates (__wl_rates + 0) +#define wl_g_rates_size 12 + +static struct ieee80211_channel __wl_2ghz_channels[] = { + CHAN2G(1, 2412, 0), + CHAN2G(2, 2417, 0), + CHAN2G(3, 2422, 0), + CHAN2G(4, 2427, 0), + CHAN2G(5, 2432, 0), + CHAN2G(6, 2437, 0), + CHAN2G(7, 2442, 0), + CHAN2G(8, 2447, 0), + CHAN2G(9, 2452, 0), + CHAN2G(10, 2457, 0), + CHAN2G(11, 2462, 0), + CHAN2G(12, 2467, 0), + CHAN2G(13, 2472, 0), + CHAN2G(14, 2484, 0), +}; + +static struct ieee80211_channel __wl_5ghz_a_channels[] = { + CHAN5G(34, 0), CHAN5G(36, 0), + CHAN5G(38, 0), CHAN5G(40, 0), + CHAN5G(42, 0), CHAN5G(44, 0), + CHAN5G(46, 0), CHAN5G(48, 0), + CHAN5G(52, 0), CHAN5G(56, 0), + CHAN5G(60, 0), CHAN5G(64, 0), + CHAN5G(100, 0), CHAN5G(104, 0), + CHAN5G(108, 0), CHAN5G(112, 0), + CHAN5G(116, 0), CHAN5G(120, 0), + CHAN5G(124, 0), CHAN5G(128, 0), + CHAN5G(132, 0), CHAN5G(136, 0), + CHAN5G(140, 0), CHAN5G(149, 0), + CHAN5G(153, 0), CHAN5G(157, 0), + CHAN5G(161, 0), CHAN5G(165, 0), + CHAN5G(184, 0), CHAN5G(188, 0), + CHAN5G(192, 0), CHAN5G(196, 0), + CHAN5G(200, 0), CHAN5G(204, 0), + CHAN5G(208, 0), CHAN5G(212, 0), + CHAN5G(216, 0), +}; + +static struct ieee80211_supported_band __wl_band_2ghz = { + .band = IEEE80211_BAND_2GHZ, + .channels = __wl_2ghz_channels, + .n_channels = ARRAY_SIZE(__wl_2ghz_channels), + .bitrates = wl_g_rates, + .n_bitrates = wl_g_rates_size, + .ht_cap = {IEEE80211_HT_CAP_SUP_WIDTH_20_40, true}, +}; + +static struct ieee80211_supported_band __wl_band_5ghz_a = { + .band = IEEE80211_BAND_5GHZ, + .channels = __wl_5ghz_a_channels, + .n_channels = ARRAY_SIZE(__wl_5ghz_a_channels), + .bitrates = wl_a_rates, + .n_bitrates = wl_a_rates_size, +}; + +/* This is to override regulatory domains defined in cfg80211 module (reg.c) + * By default world regulatory domain defined in reg.c puts the flags + * NL80211_RRF_NO_IR for 5GHz channels (for * 36..48 and 149..165). + * With respect to these flags, wpa_supplicant doesn't * start p2p + * operations on 5GHz channels. All the changes in world regulatory + * domain are to be done here. + */ +static const struct ieee80211_regdomain brcmf_regdom = { + .n_reg_rules = 4, + .alpha2 = "99", + .reg_rules = { + /* IEEE 802.11b/g, channels 1..11 */ + REG_RULE(2412-10, 2472+10, 40, 6, 20, 0), + /* If any */ + /* IEEE 802.11 channel 14 - Only JP enables + * this and for 802.11b only + */ + REG_RULE(2484-10, 2484+10, 20, 6, 20, 0), + /* IEEE 802.11a, channel 36..64 */ + REG_RULE(5150-10, 5350+10, 80, 6, 20, 0), + /* IEEE 802.11a, channel 100..165 */ + REG_RULE(5470-10, 5850+10, 80, 6, 20, 0), } +}; + +static const u32 __wl_cipher_suites[] = { + WLAN_CIPHER_SUITE_WEP40, + WLAN_CIPHER_SUITE_WEP104, + WLAN_CIPHER_SUITE_TKIP, + WLAN_CIPHER_SUITE_CCMP, + WLAN_CIPHER_SUITE_AES_CMAC, +}; + +/* Vendor specific ie. id = 221, oui and type defines exact ie */ +struct brcmf_vs_tlv { + u8 id; + u8 len; + u8 oui[3]; + u8 oui_type; +}; + +struct parsed_vndr_ie_info { + u8 *ie_ptr; + u32 ie_len; /* total length including id & length field */ + struct brcmf_vs_tlv vndrie; +}; + +struct parsed_vndr_ies { + u32 count; + struct parsed_vndr_ie_info ie_info[VNDR_IE_PARSE_LIMIT]; +}; + +static int brcmf_roamoff; +module_param_named(roamoff, brcmf_roamoff, int, S_IRUSR); +MODULE_PARM_DESC(roamoff, "do not use internal roaming engine"); + +/* Quarter dBm units to mW + * Table starts at QDBM_OFFSET, so the first entry is mW for qdBm=153 + * Table is offset so the last entry is largest mW value that fits in + * a u16. + */ + +#define QDBM_OFFSET 153 /* Offset for first entry */ +#define QDBM_TABLE_LEN 40 /* Table size */ + +/* Smallest mW value that will round up to the first table entry, QDBM_OFFSET. + * Value is ( mW(QDBM_OFFSET - 1) + mW(QDBM_OFFSET) ) / 2 + */ +#define QDBM_TABLE_LOW_BOUND 6493 /* Low bound */ + +/* Largest mW value that will round down to the last table entry, + * QDBM_OFFSET + QDBM_TABLE_LEN-1. + * Value is ( mW(QDBM_OFFSET + QDBM_TABLE_LEN - 1) + + * mW(QDBM_OFFSET + QDBM_TABLE_LEN) ) / 2. + */ +#define QDBM_TABLE_HIGH_BOUND 64938 /* High bound */ + +static const u16 nqdBm_to_mW_map[QDBM_TABLE_LEN] = { +/* qdBm: +0 +1 +2 +3 +4 +5 +6 +7 */ +/* 153: */ 6683, 7079, 7499, 7943, 8414, 8913, 9441, 10000, +/* 161: */ 10593, 11220, 11885, 12589, 13335, 14125, 14962, 15849, +/* 169: */ 16788, 17783, 18836, 19953, 21135, 22387, 23714, 25119, +/* 177: */ 26607, 28184, 29854, 31623, 33497, 35481, 37584, 39811, +/* 185: */ 42170, 44668, 47315, 50119, 53088, 56234, 59566, 63096 +}; + +static u16 brcmf_qdbm_to_mw(u8 qdbm) +{ + uint factor = 1; + int idx = qdbm - QDBM_OFFSET; + + if (idx >= QDBM_TABLE_LEN) + /* clamp to max u16 mW value */ + return 0xFFFF; + + /* scale the qdBm index up to the range of the table 0-40 + * where an offset of 40 qdBm equals a factor of 10 mW. + */ + while (idx < 0) { + idx += 40; + factor *= 10; + } + + /* return the mW value scaled down to the correct factor of 10, + * adding in factor/2 to get proper rounding. + */ + return (nqdBm_to_mW_map[idx] + factor / 2) / factor; +} + +static u8 brcmf_mw_to_qdbm(u16 mw) +{ + u8 qdbm; + int offset; + uint mw_uint = mw; + uint boundary; + + /* handle boundary case */ + if (mw_uint <= 1) + return 0; + + offset = QDBM_OFFSET; + + /* move mw into the range of the table */ + while (mw_uint < QDBM_TABLE_LOW_BOUND) { + mw_uint *= 10; + offset -= 40; + } + + for (qdbm = 0; qdbm < QDBM_TABLE_LEN - 1; qdbm++) { + boundary = nqdBm_to_mW_map[qdbm] + (nqdBm_to_mW_map[qdbm + 1] - + nqdBm_to_mW_map[qdbm]) / 2; + if (mw_uint < boundary) + break; + } + + qdbm += (u8) offset; + + return qdbm; +} + +static u16 chandef_to_chanspec(struct brcmu_d11inf *d11inf, + struct cfg80211_chan_def *ch) +{ + struct brcmu_chan ch_inf; + s32 primary_offset; + + brcmf_dbg(TRACE, "chandef: control %d center %d width %d\n", + ch->chan->center_freq, ch->center_freq1, ch->width); + ch_inf.chnum = ieee80211_frequency_to_channel(ch->center_freq1); + primary_offset = ch->center_freq1 - ch->chan->center_freq; + switch (ch->width) { + case NL80211_CHAN_WIDTH_20: + ch_inf.bw = BRCMU_CHAN_BW_20; + WARN_ON(primary_offset != 0); + break; + case NL80211_CHAN_WIDTH_40: + ch_inf.bw = BRCMU_CHAN_BW_40; + if (primary_offset < 0) + ch_inf.sb = BRCMU_CHAN_SB_U; + else + ch_inf.sb = BRCMU_CHAN_SB_L; + break; + case NL80211_CHAN_WIDTH_80: + ch_inf.bw = BRCMU_CHAN_BW_80; + if (primary_offset < 0) { + if (primary_offset < -CH_10MHZ_APART) + ch_inf.sb = BRCMU_CHAN_SB_UU; + else + ch_inf.sb = BRCMU_CHAN_SB_UL; + } else { + if (primary_offset > CH_10MHZ_APART) + ch_inf.sb = BRCMU_CHAN_SB_LL; + else + ch_inf.sb = BRCMU_CHAN_SB_LU; + } + break; + default: + WARN_ON_ONCE(1); + } + switch (ch->chan->band) { + case IEEE80211_BAND_2GHZ: + ch_inf.band = BRCMU_CHAN_BAND_2G; + break; + case IEEE80211_BAND_5GHZ: + ch_inf.band = BRCMU_CHAN_BAND_5G; + break; + default: + WARN_ON_ONCE(1); + } + d11inf->encchspec(&ch_inf); + + return ch_inf.chspec; +} + +u16 channel_to_chanspec(struct brcmu_d11inf *d11inf, + struct ieee80211_channel *ch) +{ + struct brcmu_chan ch_inf; + + ch_inf.chnum = ieee80211_frequency_to_channel(ch->center_freq); + ch_inf.bw = BRCMU_CHAN_BW_20; + d11inf->encchspec(&ch_inf); + + return ch_inf.chspec; +} + +/* Traverse a string of 1-byte tag/1-byte length/variable-length value + * triples, returning a pointer to the substring whose first element + * matches tag + */ +const struct brcmf_tlv * +brcmf_parse_tlvs(const void *buf, int buflen, uint key) +{ + const struct brcmf_tlv *elt = buf; + int totlen = buflen; + + /* find tagged parameter */ + while (totlen >= TLV_HDR_LEN) { + int len = elt->len; + + /* validate remaining totlen */ + if ((elt->id == key) && (totlen >= (len + TLV_HDR_LEN))) + return elt; + + elt = (struct brcmf_tlv *)((u8 *)elt + (len + TLV_HDR_LEN)); + totlen -= (len + TLV_HDR_LEN); + } + + return NULL; +} + +/* Is any of the tlvs the expected entry? If + * not update the tlvs buffer pointer/length. + */ +static bool +brcmf_tlv_has_ie(const u8 *ie, const u8 **tlvs, u32 *tlvs_len, + const u8 *oui, u32 oui_len, u8 type) +{ + /* If the contents match the OUI and the type */ + if (ie[TLV_LEN_OFF] >= oui_len + 1 && + !memcmp(&ie[TLV_BODY_OFF], oui, oui_len) && + type == ie[TLV_BODY_OFF + oui_len]) { + return true; + } + + if (tlvs == NULL) + return false; + /* point to the next ie */ + ie += ie[TLV_LEN_OFF] + TLV_HDR_LEN; + /* calculate the length of the rest of the buffer */ + *tlvs_len -= (int)(ie - *tlvs); + /* update the pointer to the start of the buffer */ + *tlvs = ie; + + return false; +} + +static struct brcmf_vs_tlv * +brcmf_find_wpaie(const u8 *parse, u32 len) +{ + const struct brcmf_tlv *ie; + + while ((ie = brcmf_parse_tlvs(parse, len, WLAN_EID_VENDOR_SPECIFIC))) { + if (brcmf_tlv_has_ie((const u8 *)ie, &parse, &len, + WPA_OUI, TLV_OUI_LEN, WPA_OUI_TYPE)) + return (struct brcmf_vs_tlv *)ie; + } + return NULL; +} + +static struct brcmf_vs_tlv * +brcmf_find_wpsie(const u8 *parse, u32 len) +{ + const struct brcmf_tlv *ie; + + while ((ie = brcmf_parse_tlvs(parse, len, WLAN_EID_VENDOR_SPECIFIC))) { + if (brcmf_tlv_has_ie((u8 *)ie, &parse, &len, + WPA_OUI, TLV_OUI_LEN, WPS_OUI_TYPE)) + return (struct brcmf_vs_tlv *)ie; + } + return NULL; +} + + +static void convert_key_from_CPU(struct brcmf_wsec_key *key, + struct brcmf_wsec_key_le *key_le) +{ + key_le->index = cpu_to_le32(key->index); + key_le->len = cpu_to_le32(key->len); + key_le->algo = cpu_to_le32(key->algo); + key_le->flags = cpu_to_le32(key->flags); + key_le->rxiv.hi = cpu_to_le32(key->rxiv.hi); + key_le->rxiv.lo = cpu_to_le16(key->rxiv.lo); + key_le->iv_initialized = cpu_to_le32(key->iv_initialized); + memcpy(key_le->data, key->data, sizeof(key->data)); + memcpy(key_le->ea, key->ea, sizeof(key->ea)); +} + +static int +send_key_to_dongle(struct net_device *ndev, struct brcmf_wsec_key *key) +{ + int err; + struct brcmf_wsec_key_le key_le; + + convert_key_from_CPU(key, &key_le); + + brcmf_netdev_wait_pend8021x(ndev); + + err = brcmf_fil_bsscfg_data_set(netdev_priv(ndev), "wsec_key", &key_le, + sizeof(key_le)); + + if (err) + brcmf_err("wsec_key error (%d)\n", err); + return err; +} + +static s32 +brcmf_configure_arp_offload(struct brcmf_if *ifp, bool enable) +{ + s32 err; + u32 mode; + + if (enable) + mode = BRCMF_ARP_OL_AGENT | BRCMF_ARP_OL_PEER_AUTO_REPLY; + else + mode = 0; + + /* Try to set and enable ARP offload feature, this may fail, then it */ + /* is simply not supported and err 0 will be returned */ + err = brcmf_fil_iovar_int_set(ifp, "arp_ol", mode); + if (err) { + brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, err = %d\n", + mode, err); + err = 0; + } else { + err = brcmf_fil_iovar_int_set(ifp, "arpoe", enable); + if (err) { + brcmf_dbg(TRACE, "failed to configure (%d) ARP offload err = %d\n", + enable, err); + err = 0; + } else + brcmf_dbg(TRACE, "successfully configured (%d) ARP offload to 0x%x\n", + enable, mode); + } + + return err; +} + +static bool brcmf_is_apmode(struct brcmf_cfg80211_vif *vif) +{ + enum nl80211_iftype iftype; + + iftype = vif->wdev.iftype; + return iftype == NL80211_IFTYPE_AP || iftype == NL80211_IFTYPE_P2P_GO; +} + +static bool brcmf_is_ibssmode(struct brcmf_cfg80211_vif *vif) +{ + return vif->wdev.iftype == NL80211_IFTYPE_ADHOC; +} + +static struct wireless_dev *brcmf_cfg80211_add_iface(struct wiphy *wiphy, + const char *name, + enum nl80211_iftype type, + u32 *flags, + struct vif_params *params) +{ + brcmf_dbg(TRACE, "enter: %s type %d\n", name, type); + switch (type) { + case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_AP_VLAN: + case NL80211_IFTYPE_WDS: + case NL80211_IFTYPE_MONITOR: + case NL80211_IFTYPE_MESH_POINT: + return ERR_PTR(-EOPNOTSUPP); + case NL80211_IFTYPE_P2P_CLIENT: + case NL80211_IFTYPE_P2P_GO: + case NL80211_IFTYPE_P2P_DEVICE: + return brcmf_p2p_add_vif(wiphy, name, type, flags, params); + case NL80211_IFTYPE_UNSPECIFIED: + default: + return ERR_PTR(-EINVAL); + } +} + +void brcmf_set_mpc(struct brcmf_if *ifp, int mpc) +{ + s32 err = 0; + + if (check_vif_up(ifp->vif)) { + err = brcmf_fil_iovar_int_set(ifp, "mpc", mpc); + if (err) { + brcmf_err("fail to set mpc\n"); + return; + } + brcmf_dbg(INFO, "MPC : %d\n", mpc); + } +} + +s32 brcmf_notify_escan_complete(struct brcmf_cfg80211_info *cfg, + struct brcmf_if *ifp, bool aborted, + bool fw_abort) +{ + struct brcmf_scan_params_le params_le; + struct cfg80211_scan_request *scan_request; + s32 err = 0; + + brcmf_dbg(SCAN, "Enter\n"); + + /* clear scan request, because the FW abort can cause a second call */ + /* to this functon and might cause a double cfg80211_scan_done */ + scan_request = cfg->scan_request; + cfg->scan_request = NULL; + + if (timer_pending(&cfg->escan_timeout)) + del_timer_sync(&cfg->escan_timeout); + + if (fw_abort) { + /* Do a scan abort to stop the driver's scan engine */ + brcmf_dbg(SCAN, "ABORT scan in firmware\n"); + memset(¶ms_le, 0, sizeof(params_le)); + memset(params_le.bssid, 0xFF, ETH_ALEN); + params_le.bss_type = DOT11_BSSTYPE_ANY; + params_le.scan_type = 0; + params_le.channel_num = cpu_to_le32(1); + params_le.nprobes = cpu_to_le32(1); + params_le.active_time = cpu_to_le32(-1); + params_le.passive_time = cpu_to_le32(-1); + params_le.home_time = cpu_to_le32(-1); + /* Scan is aborted by setting channel_list[0] to -1 */ + params_le.channel_list[0] = cpu_to_le16(-1); + /* E-Scan (or anyother type) can be aborted by SCAN */ + err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SCAN, + ¶ms_le, sizeof(params_le)); + if (err) + brcmf_err("Scan abort failed\n"); + } + + brcmf_set_mpc(ifp, 1); + + /* + * e-scan can be initiated by scheduled scan + * which takes precedence. + */ + if (cfg->sched_escan) { + brcmf_dbg(SCAN, "scheduled scan completed\n"); + cfg->sched_escan = false; + if (!aborted) + cfg80211_sched_scan_results(cfg_to_wiphy(cfg)); + } else if (scan_request) { + brcmf_dbg(SCAN, "ESCAN Completed scan: %s\n", + aborted ? "Aborted" : "Done"); + cfg80211_scan_done(scan_request, aborted); + } + if (!test_and_clear_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) + brcmf_dbg(SCAN, "Scan complete, probably P2P scan\n"); + + return err; +} + +static +int brcmf_cfg80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev) +{ + struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy); + struct net_device *ndev = wdev->netdev; + + /* vif event pending in firmware */ + if (brcmf_cfg80211_vif_event_armed(cfg)) + return -EBUSY; + + if (ndev) { + if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status) && + cfg->escan_info.ifp == netdev_priv(ndev)) + brcmf_notify_escan_complete(cfg, netdev_priv(ndev), + true, true); + + brcmf_fil_iovar_int_set(netdev_priv(ndev), "mpc", 1); + } + + switch (wdev->iftype) { + case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_STATION: + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_AP_VLAN: + case NL80211_IFTYPE_WDS: + case NL80211_IFTYPE_MONITOR: + case NL80211_IFTYPE_MESH_POINT: + return -EOPNOTSUPP; + case NL80211_IFTYPE_P2P_CLIENT: + case NL80211_IFTYPE_P2P_GO: + case NL80211_IFTYPE_P2P_DEVICE: + return brcmf_p2p_del_vif(wiphy, wdev); + case NL80211_IFTYPE_UNSPECIFIED: + default: + return -EINVAL; + } + return -EOPNOTSUPP; +} + +static s32 +brcmf_cfg80211_change_iface(struct wiphy *wiphy, struct net_device *ndev, + enum nl80211_iftype type, u32 *flags, + struct vif_params *params) +{ + struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy); + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_cfg80211_vif *vif = ifp->vif; + s32 infra = 0; + s32 ap = 0; + s32 err = 0; + + brcmf_dbg(TRACE, "Enter, ndev=%p, type=%d\n", ndev, type); + + switch (type) { + case NL80211_IFTYPE_MONITOR: + case NL80211_IFTYPE_WDS: + brcmf_err("type (%d) : currently we do not support this type\n", + type); + return -EOPNOTSUPP; + case NL80211_IFTYPE_ADHOC: + infra = 0; + break; + case NL80211_IFTYPE_STATION: + /* Ignore change for p2p IF. Unclear why supplicant does this */ + if ((vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT) || + (vif->wdev.iftype == NL80211_IFTYPE_P2P_GO)) { + brcmf_dbg(TRACE, "Ignoring cmd for p2p if\n"); + /* WAR: It is unexpected to get a change of VIF for P2P + * IF, but it happens. The request can not be handled + * but returning EPERM causes a crash. Returning 0 + * without setting ieee80211_ptr->iftype causes trace + * (WARN_ON) but it works with wpa_supplicant + */ + return 0; + } + infra = 1; + break; + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_P2P_GO: + ap = 1; + break; + default: + err = -EINVAL; + goto done; + } + + if (ap) { + if (type == NL80211_IFTYPE_P2P_GO) { + brcmf_dbg(INFO, "IF Type = P2P GO\n"); + err = brcmf_p2p_ifchange(cfg, BRCMF_FIL_P2P_IF_GO); + } + if (!err) { + set_bit(BRCMF_VIF_STATUS_AP_CREATING, &vif->sme_state); + brcmf_dbg(INFO, "IF Type = AP\n"); + } + } else { + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_INFRA, infra); + if (err) { + brcmf_err("WLC_SET_INFRA error (%d)\n", err); + err = -EAGAIN; + goto done; + } + brcmf_dbg(INFO, "IF Type = %s\n", brcmf_is_ibssmode(vif) ? + "Adhoc" : "Infra"); + } + ndev->ieee80211_ptr->iftype = type; + +done: + brcmf_dbg(TRACE, "Exit\n"); + + return err; +} + +static void brcmf_escan_prep(struct brcmf_cfg80211_info *cfg, + struct brcmf_scan_params_le *params_le, + struct cfg80211_scan_request *request) +{ + u32 n_ssids; + u32 n_channels; + s32 i; + s32 offset; + u16 chanspec; + char *ptr; + struct brcmf_ssid_le ssid_le; + + memset(params_le->bssid, 0xFF, ETH_ALEN); + params_le->bss_type = DOT11_BSSTYPE_ANY; + params_le->scan_type = 0; + params_le->channel_num = 0; + params_le->nprobes = cpu_to_le32(-1); + params_le->active_time = cpu_to_le32(-1); + params_le->passive_time = cpu_to_le32(-1); + params_le->home_time = cpu_to_le32(-1); + memset(¶ms_le->ssid_le, 0, sizeof(params_le->ssid_le)); + + /* if request is null exit so it will be all channel broadcast scan */ + if (!request) + return; + + n_ssids = request->n_ssids; + n_channels = request->n_channels; + /* Copy channel array if applicable */ + brcmf_dbg(SCAN, "### List of channelspecs to scan ### %d\n", + n_channels); + if (n_channels > 0) { + for (i = 0; i < n_channels; i++) { + chanspec = channel_to_chanspec(&cfg->d11inf, + request->channels[i]); + brcmf_dbg(SCAN, "Chan : %d, Channel spec: %x\n", + request->channels[i]->hw_value, chanspec); + params_le->channel_list[i] = cpu_to_le16(chanspec); + } + } else { + brcmf_dbg(SCAN, "Scanning all channels\n"); + } + /* Copy ssid array if applicable */ + brcmf_dbg(SCAN, "### List of SSIDs to scan ### %d\n", n_ssids); + if (n_ssids > 0) { + offset = offsetof(struct brcmf_scan_params_le, channel_list) + + n_channels * sizeof(u16); + offset = roundup(offset, sizeof(u32)); + ptr = (char *)params_le + offset; + for (i = 0; i < n_ssids; i++) { + memset(&ssid_le, 0, sizeof(ssid_le)); + ssid_le.SSID_len = + cpu_to_le32(request->ssids[i].ssid_len); + memcpy(ssid_le.SSID, request->ssids[i].ssid, + request->ssids[i].ssid_len); + if (!ssid_le.SSID_len) + brcmf_dbg(SCAN, "%d: Broadcast scan\n", i); + else + brcmf_dbg(SCAN, "%d: scan for %s size =%d\n", + i, ssid_le.SSID, ssid_le.SSID_len); + memcpy(ptr, &ssid_le, sizeof(ssid_le)); + ptr += sizeof(ssid_le); + } + } else { + brcmf_dbg(SCAN, "Broadcast scan %p\n", request->ssids); + if ((request->ssids) && request->ssids->ssid_len) { + brcmf_dbg(SCAN, "SSID %s len=%d\n", + params_le->ssid_le.SSID, + request->ssids->ssid_len); + params_le->ssid_le.SSID_len = + cpu_to_le32(request->ssids->ssid_len); + memcpy(¶ms_le->ssid_le.SSID, request->ssids->ssid, + request->ssids->ssid_len); + } + } + /* Adding mask to channel numbers */ + params_le->channel_num = + cpu_to_le32((n_ssids << BRCMF_SCAN_PARAMS_NSSID_SHIFT) | + (n_channels & BRCMF_SCAN_PARAMS_COUNT_MASK)); +} + +static s32 +brcmf_run_escan(struct brcmf_cfg80211_info *cfg, struct brcmf_if *ifp, + struct cfg80211_scan_request *request, u16 action) +{ + s32 params_size = BRCMF_SCAN_PARAMS_FIXED_SIZE + + offsetof(struct brcmf_escan_params_le, params_le); + struct brcmf_escan_params_le *params; + s32 err = 0; + + brcmf_dbg(SCAN, "E-SCAN START\n"); + + if (request != NULL) { + /* Allocate space for populating ssids in struct */ + params_size += sizeof(u32) * ((request->n_channels + 1) / 2); + + /* Allocate space for populating ssids in struct */ + params_size += sizeof(struct brcmf_ssid) * request->n_ssids; + } + + params = kzalloc(params_size, GFP_KERNEL); + if (!params) { + err = -ENOMEM; + goto exit; + } + BUG_ON(params_size + sizeof("escan") >= BRCMF_DCMD_MEDLEN); + brcmf_escan_prep(cfg, ¶ms->params_le, request); + params->version = cpu_to_le32(BRCMF_ESCAN_REQ_VERSION); + params->action = cpu_to_le16(action); + params->sync_id = cpu_to_le16(0x1234); + + err = brcmf_fil_iovar_data_set(ifp, "escan", params, params_size); + if (err) { + if (err == -EBUSY) + brcmf_dbg(INFO, "system busy : escan canceled\n"); + else + brcmf_err("error (%d)\n", err); + } + + kfree(params); +exit: + return err; +} + +static s32 +brcmf_do_escan(struct brcmf_cfg80211_info *cfg, struct wiphy *wiphy, + struct brcmf_if *ifp, struct cfg80211_scan_request *request) +{ + s32 err; + u32 passive_scan; + struct brcmf_scan_results *results; + struct escan_info *escan = &cfg->escan_info; + + brcmf_dbg(SCAN, "Enter\n"); + escan->ifp = ifp; + escan->wiphy = wiphy; + escan->escan_state = WL_ESCAN_STATE_SCANNING; + passive_scan = cfg->active_scan ? 0 : 1; + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PASSIVE_SCAN, + passive_scan); + if (err) { + brcmf_err("error (%d)\n", err); + return err; + } + brcmf_set_mpc(ifp, 0); + results = (struct brcmf_scan_results *)cfg->escan_info.escan_buf; + results->version = 0; + results->count = 0; + results->buflen = WL_ESCAN_RESULTS_FIXED_SIZE; + + err = escan->run(cfg, ifp, request, WL_ESCAN_ACTION_START); + if (err) + brcmf_set_mpc(ifp, 1); + return err; +} + +static s32 +brcmf_cfg80211_escan(struct wiphy *wiphy, struct brcmf_cfg80211_vif *vif, + struct cfg80211_scan_request *request, + struct cfg80211_ssid *this_ssid) +{ + struct brcmf_if *ifp = vif->ifp; + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct cfg80211_ssid *ssids; + struct brcmf_cfg80211_scan_req *sr = &cfg->scan_req_int; + u32 passive_scan; + bool escan_req; + bool spec_scan; + s32 err; + u32 SSID_len; + + brcmf_dbg(SCAN, "START ESCAN\n"); + + if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) { + brcmf_err("Scanning already: status (%lu)\n", cfg->scan_status); + return -EAGAIN; + } + if (test_bit(BRCMF_SCAN_STATUS_ABORT, &cfg->scan_status)) { + brcmf_err("Scanning being aborted: status (%lu)\n", + cfg->scan_status); + return -EAGAIN; + } + if (test_bit(BRCMF_SCAN_STATUS_SUPPRESS, &cfg->scan_status)) { + brcmf_err("Scanning suppressed: status (%lu)\n", + cfg->scan_status); + return -EAGAIN; + } + if (test_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state)) { + brcmf_err("Connecting: status (%lu)\n", ifp->vif->sme_state); + return -EAGAIN; + } + + /* If scan req comes for p2p0, send it over primary I/F */ + if (vif == cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif) + vif = cfg->p2p.bss_idx[P2PAPI_BSSCFG_PRIMARY].vif; + + /* Arm scan timeout timer */ + mod_timer(&cfg->escan_timeout, jiffies + + WL_ESCAN_TIMER_INTERVAL_MS * HZ / 1000); + + escan_req = false; + if (request) { + /* scan bss */ + ssids = request->ssids; + escan_req = true; + } else { + /* scan in ibss */ + /* we don't do escan in ibss */ + ssids = this_ssid; + } + + cfg->scan_request = request; + set_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status); + if (escan_req) { + cfg->escan_info.run = brcmf_run_escan; + err = brcmf_p2p_scan_prep(wiphy, request, vif); + if (err) + goto scan_out; + + err = brcmf_do_escan(cfg, wiphy, vif->ifp, request); + if (err) + goto scan_out; + } else { + brcmf_dbg(SCAN, "ssid \"%s\", ssid_len (%d)\n", + ssids->ssid, ssids->ssid_len); + memset(&sr->ssid_le, 0, sizeof(sr->ssid_le)); + SSID_len = min_t(u8, sizeof(sr->ssid_le.SSID), ssids->ssid_len); + sr->ssid_le.SSID_len = cpu_to_le32(0); + spec_scan = false; + if (SSID_len) { + memcpy(sr->ssid_le.SSID, ssids->ssid, SSID_len); + sr->ssid_le.SSID_len = cpu_to_le32(SSID_len); + spec_scan = true; + } else + brcmf_dbg(SCAN, "Broadcast scan\n"); + + passive_scan = cfg->active_scan ? 0 : 1; + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PASSIVE_SCAN, + passive_scan); + if (err) { + brcmf_err("WLC_SET_PASSIVE_SCAN error (%d)\n", err); + goto scan_out; + } + brcmf_set_mpc(ifp, 0); + err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SCAN, + &sr->ssid_le, sizeof(sr->ssid_le)); + if (err) { + if (err == -EBUSY) + brcmf_dbg(INFO, "BUSY: scan for \"%s\" canceled\n", + sr->ssid_le.SSID); + else + brcmf_err("WLC_SCAN error (%d)\n", err); + + brcmf_set_mpc(ifp, 1); + goto scan_out; + } + } + + return 0; + +scan_out: + clear_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status); + if (timer_pending(&cfg->escan_timeout)) + del_timer_sync(&cfg->escan_timeout); + cfg->scan_request = NULL; + return err; +} + +static s32 +brcmf_cfg80211_scan(struct wiphy *wiphy, struct cfg80211_scan_request *request) +{ + struct brcmf_cfg80211_vif *vif; + s32 err = 0; + + brcmf_dbg(TRACE, "Enter\n"); + vif = container_of(request->wdev, struct brcmf_cfg80211_vif, wdev); + if (!check_vif_up(vif)) + return -EIO; + + err = brcmf_cfg80211_escan(wiphy, vif, request, NULL); + + if (err) + brcmf_err("scan error (%d)\n", err); + + brcmf_dbg(TRACE, "Exit\n"); + return err; +} + +static s32 brcmf_set_rts(struct net_device *ndev, u32 rts_threshold) +{ + s32 err = 0; + + err = brcmf_fil_iovar_int_set(netdev_priv(ndev), "rtsthresh", + rts_threshold); + if (err) + brcmf_err("Error (%d)\n", err); + + return err; +} + +static s32 brcmf_set_frag(struct net_device *ndev, u32 frag_threshold) +{ + s32 err = 0; + + err = brcmf_fil_iovar_int_set(netdev_priv(ndev), "fragthresh", + frag_threshold); + if (err) + brcmf_err("Error (%d)\n", err); + + return err; +} + +static s32 brcmf_set_retry(struct net_device *ndev, u32 retry, bool l) +{ + s32 err = 0; + u32 cmd = (l ? BRCMF_C_SET_LRL : BRCMF_C_SET_SRL); + + err = brcmf_fil_cmd_int_set(netdev_priv(ndev), cmd, retry); + if (err) { + brcmf_err("cmd (%d) , error (%d)\n", cmd, err); + return err; + } + return err; +} + +static s32 brcmf_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct net_device *ndev = cfg_to_ndev(cfg); + struct brcmf_if *ifp = netdev_priv(ndev); + s32 err = 0; + + brcmf_dbg(TRACE, "Enter\n"); + if (!check_vif_up(ifp->vif)) + return -EIO; + + if (changed & WIPHY_PARAM_RTS_THRESHOLD && + (cfg->conf->rts_threshold != wiphy->rts_threshold)) { + cfg->conf->rts_threshold = wiphy->rts_threshold; + err = brcmf_set_rts(ndev, cfg->conf->rts_threshold); + if (!err) + goto done; + } + if (changed & WIPHY_PARAM_FRAG_THRESHOLD && + (cfg->conf->frag_threshold != wiphy->frag_threshold)) { + cfg->conf->frag_threshold = wiphy->frag_threshold; + err = brcmf_set_frag(ndev, cfg->conf->frag_threshold); + if (!err) + goto done; + } + if (changed & WIPHY_PARAM_RETRY_LONG + && (cfg->conf->retry_long != wiphy->retry_long)) { + cfg->conf->retry_long = wiphy->retry_long; + err = brcmf_set_retry(ndev, cfg->conf->retry_long, true); + if (!err) + goto done; + } + if (changed & WIPHY_PARAM_RETRY_SHORT + && (cfg->conf->retry_short != wiphy->retry_short)) { + cfg->conf->retry_short = wiphy->retry_short; + err = brcmf_set_retry(ndev, cfg->conf->retry_short, false); + if (!err) + goto done; + } + +done: + brcmf_dbg(TRACE, "Exit\n"); + return err; +} + +static void brcmf_init_prof(struct brcmf_cfg80211_profile *prof) +{ + memset(prof, 0, sizeof(*prof)); +} + +static void brcmf_link_down(struct brcmf_cfg80211_vif *vif) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(vif->wdev.wiphy); + s32 err = 0; + + brcmf_dbg(TRACE, "Enter\n"); + + if (test_bit(BRCMF_VIF_STATUS_CONNECTED, &vif->sme_state)) { + brcmf_dbg(INFO, "Call WLC_DISASSOC to stop excess roaming\n "); + err = brcmf_fil_cmd_data_set(vif->ifp, + BRCMF_C_DISASSOC, NULL, 0); + if (err) { + brcmf_err("WLC_DISASSOC failed (%d)\n", err); + } + clear_bit(BRCMF_VIF_STATUS_CONNECTED, &vif->sme_state); + cfg80211_disconnected(vif->wdev.netdev, 0, NULL, 0, GFP_KERNEL); + + } + clear_bit(BRCMF_VIF_STATUS_CONNECTING, &vif->sme_state); + clear_bit(BRCMF_SCAN_STATUS_SUPPRESS, &cfg->scan_status); + brcmf_btcoex_set_mode(vif, BRCMF_BTCOEX_ENABLED, 0); + brcmf_dbg(TRACE, "Exit\n"); +} + +static s32 +brcmf_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *ndev, + struct cfg80211_ibss_params *params) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_cfg80211_profile *profile = &ifp->vif->profile; + struct brcmf_join_params join_params; + size_t join_params_size = 0; + s32 err = 0; + s32 wsec = 0; + s32 bcnprd; + u16 chanspec; + + brcmf_dbg(TRACE, "Enter\n"); + if (!check_vif_up(ifp->vif)) + return -EIO; + + if (params->ssid) + brcmf_dbg(CONN, "SSID: %s\n", params->ssid); + else { + brcmf_dbg(CONN, "SSID: NULL, Not supported\n"); + return -EOPNOTSUPP; + } + + set_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state); + + if (params->bssid) + brcmf_dbg(CONN, "BSSID: %pM\n", params->bssid); + else + brcmf_dbg(CONN, "No BSSID specified\n"); + + if (params->chandef.chan) + brcmf_dbg(CONN, "channel: %d\n", + params->chandef.chan->center_freq); + else + brcmf_dbg(CONN, "no channel specified\n"); + + if (params->channel_fixed) + brcmf_dbg(CONN, "fixed channel required\n"); + else + brcmf_dbg(CONN, "no fixed channel required\n"); + + if (params->ie && params->ie_len) + brcmf_dbg(CONN, "ie len: %d\n", params->ie_len); + else + brcmf_dbg(CONN, "no ie specified\n"); + + if (params->beacon_interval) + brcmf_dbg(CONN, "beacon interval: %d\n", + params->beacon_interval); + else + brcmf_dbg(CONN, "no beacon interval specified\n"); + + if (params->basic_rates) + brcmf_dbg(CONN, "basic rates: %08X\n", params->basic_rates); + else + brcmf_dbg(CONN, "no basic rates specified\n"); + + if (params->privacy) + brcmf_dbg(CONN, "privacy required\n"); + else + brcmf_dbg(CONN, "no privacy required\n"); + + /* Configure Privacy for starter */ + if (params->privacy) + wsec |= WEP_ENABLED; + + err = brcmf_fil_iovar_int_set(ifp, "wsec", wsec); + if (err) { + brcmf_err("wsec failed (%d)\n", err); + goto done; + } + + /* Configure Beacon Interval for starter */ + if (params->beacon_interval) + bcnprd = params->beacon_interval; + else + bcnprd = 100; + + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_BCNPRD, bcnprd); + if (err) { + brcmf_err("WLC_SET_BCNPRD failed (%d)\n", err); + goto done; + } + + /* Configure required join parameter */ + memset(&join_params, 0, sizeof(struct brcmf_join_params)); + + /* SSID */ + profile->ssid.SSID_len = min_t(u32, params->ssid_len, 32); + memcpy(profile->ssid.SSID, params->ssid, profile->ssid.SSID_len); + memcpy(join_params.ssid_le.SSID, params->ssid, profile->ssid.SSID_len); + join_params.ssid_le.SSID_len = cpu_to_le32(profile->ssid.SSID_len); + join_params_size = sizeof(join_params.ssid_le); + + /* BSSID */ + if (params->bssid) { + memcpy(join_params.params_le.bssid, params->bssid, ETH_ALEN); + join_params_size = sizeof(join_params.ssid_le) + + BRCMF_ASSOC_PARAMS_FIXED_SIZE; + memcpy(profile->bssid, params->bssid, ETH_ALEN); + } else { + memset(join_params.params_le.bssid, 0xFF, ETH_ALEN); + memset(profile->bssid, 0, ETH_ALEN); + } + + /* Channel */ + if (params->chandef.chan) { + u32 target_channel; + + cfg->channel = + ieee80211_frequency_to_channel( + params->chandef.chan->center_freq); + if (params->channel_fixed) { + /* adding chanspec */ + chanspec = chandef_to_chanspec(&cfg->d11inf, + ¶ms->chandef); + join_params.params_le.chanspec_list[0] = + cpu_to_le16(chanspec); + join_params.params_le.chanspec_num = cpu_to_le32(1); + join_params_size += sizeof(join_params.params_le); + } + + /* set channel for starter */ + target_channel = cfg->channel; + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_CHANNEL, + target_channel); + if (err) { + brcmf_err("WLC_SET_CHANNEL failed (%d)\n", err); + goto done; + } + } else + cfg->channel = 0; + + cfg->ibss_starter = false; + + + err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SET_SSID, + &join_params, join_params_size); + if (err) { + brcmf_err("WLC_SET_SSID failed (%d)\n", err); + goto done; + } + +done: + if (err) + clear_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state); + brcmf_dbg(TRACE, "Exit\n"); + return err; +} + +static s32 +brcmf_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *ndev) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + s32 err = 0; + + brcmf_dbg(TRACE, "Enter\n"); + if (!check_vif_up(ifp->vif)) + return -EIO; + + brcmf_link_down(ifp->vif); + + brcmf_dbg(TRACE, "Exit\n"); + + return err; +} + +static s32 brcmf_set_wpa_version(struct net_device *ndev, + struct cfg80211_connect_params *sme) +{ + struct brcmf_cfg80211_profile *profile = ndev_to_prof(ndev); + struct brcmf_cfg80211_security *sec; + s32 val = 0; + s32 err = 0; + + if (sme->crypto.wpa_versions & NL80211_WPA_VERSION_1) + val = WPA_AUTH_PSK | WPA_AUTH_UNSPECIFIED; + else if (sme->crypto.wpa_versions & NL80211_WPA_VERSION_2) + val = WPA2_AUTH_PSK | WPA2_AUTH_UNSPECIFIED; + else + val = WPA_AUTH_DISABLED; + brcmf_dbg(CONN, "setting wpa_auth to 0x%0x\n", val); + err = brcmf_fil_bsscfg_int_set(netdev_priv(ndev), "wpa_auth", val); + if (err) { + brcmf_err("set wpa_auth failed (%d)\n", err); + return err; + } + sec = &profile->sec; + sec->wpa_versions = sme->crypto.wpa_versions; + return err; +} + +static s32 brcmf_set_auth_type(struct net_device *ndev, + struct cfg80211_connect_params *sme) +{ + struct brcmf_cfg80211_profile *profile = ndev_to_prof(ndev); + struct brcmf_cfg80211_security *sec; + s32 val = 0; + s32 err = 0; + + switch (sme->auth_type) { + case NL80211_AUTHTYPE_OPEN_SYSTEM: + val = 0; + brcmf_dbg(CONN, "open system\n"); + break; + case NL80211_AUTHTYPE_SHARED_KEY: + val = 1; + brcmf_dbg(CONN, "shared key\n"); + break; + case NL80211_AUTHTYPE_AUTOMATIC: + val = 2; + brcmf_dbg(CONN, "automatic\n"); + break; + case NL80211_AUTHTYPE_NETWORK_EAP: + brcmf_dbg(CONN, "network eap\n"); + default: + val = 2; + brcmf_err("invalid auth type (%d)\n", sme->auth_type); + break; + } + + err = brcmf_fil_bsscfg_int_set(netdev_priv(ndev), "auth", val); + if (err) { + brcmf_err("set auth failed (%d)\n", err); + return err; + } + sec = &profile->sec; + sec->auth_type = sme->auth_type; + return err; +} + +static s32 +brcmf_set_wsec_mode(struct net_device *ndev, + struct cfg80211_connect_params *sme, bool mfp) +{ + struct brcmf_cfg80211_profile *profile = ndev_to_prof(ndev); + struct brcmf_cfg80211_security *sec; + s32 pval = 0; + s32 gval = 0; + s32 wsec; + s32 err = 0; + + if (sme->crypto.n_ciphers_pairwise) { + switch (sme->crypto.ciphers_pairwise[0]) { + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + pval = WEP_ENABLED; + break; + case WLAN_CIPHER_SUITE_TKIP: + pval = TKIP_ENABLED; + break; + case WLAN_CIPHER_SUITE_CCMP: + pval = AES_ENABLED; + break; + case WLAN_CIPHER_SUITE_AES_CMAC: + pval = AES_ENABLED; + break; + default: + brcmf_err("invalid cipher pairwise (%d)\n", + sme->crypto.ciphers_pairwise[0]); + return -EINVAL; + } + } + if (sme->crypto.cipher_group) { + switch (sme->crypto.cipher_group) { + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + gval = WEP_ENABLED; + break; + case WLAN_CIPHER_SUITE_TKIP: + gval = TKIP_ENABLED; + break; + case WLAN_CIPHER_SUITE_CCMP: + gval = AES_ENABLED; + break; + case WLAN_CIPHER_SUITE_AES_CMAC: + gval = AES_ENABLED; + break; + default: + brcmf_err("invalid cipher group (%d)\n", + sme->crypto.cipher_group); + return -EINVAL; + } + } + + brcmf_dbg(CONN, "pval (%d) gval (%d)\n", pval, gval); + /* In case of privacy, but no security and WPS then simulate */ + /* setting AES. WPS-2.0 allows no security */ + if (brcmf_find_wpsie(sme->ie, sme->ie_len) && !pval && !gval && + sme->privacy) + pval = AES_ENABLED; + + if (mfp) + wsec = pval | gval | MFP_CAPABLE; + else + wsec = pval | gval; + err = brcmf_fil_bsscfg_int_set(netdev_priv(ndev), "wsec", wsec); + if (err) { + brcmf_err("error (%d)\n", err); + return err; + } + + sec = &profile->sec; + sec->cipher_pairwise = sme->crypto.ciphers_pairwise[0]; + sec->cipher_group = sme->crypto.cipher_group; + + return err; +} + +static s32 +brcmf_set_key_mgmt(struct net_device *ndev, struct cfg80211_connect_params *sme) +{ + struct brcmf_cfg80211_profile *profile = ndev_to_prof(ndev); + struct brcmf_cfg80211_security *sec; + s32 val = 0; + s32 err = 0; + + if (sme->crypto.n_akm_suites) { + err = brcmf_fil_bsscfg_int_get(netdev_priv(ndev), + "wpa_auth", &val); + if (err) { + brcmf_err("could not get wpa_auth (%d)\n", err); + return err; + } + if (val & (WPA_AUTH_PSK | WPA_AUTH_UNSPECIFIED)) { + switch (sme->crypto.akm_suites[0]) { + case WLAN_AKM_SUITE_8021X: + val = WPA_AUTH_UNSPECIFIED; + break; + case WLAN_AKM_SUITE_PSK: + val = WPA_AUTH_PSK; + break; + default: + brcmf_err("invalid cipher group (%d)\n", + sme->crypto.cipher_group); + return -EINVAL; + } + } else if (val & (WPA2_AUTH_PSK | WPA2_AUTH_UNSPECIFIED)) { + switch (sme->crypto.akm_suites[0]) { + case WLAN_AKM_SUITE_8021X: + val = WPA2_AUTH_UNSPECIFIED; + break; + case WLAN_AKM_SUITE_PSK: + val = WPA2_AUTH_PSK; + break; + default: + brcmf_err("invalid cipher group (%d)\n", + sme->crypto.cipher_group); + return -EINVAL; + } + } + + brcmf_dbg(CONN, "setting wpa_auth to %d\n", val); + err = brcmf_fil_bsscfg_int_set(netdev_priv(ndev), + "wpa_auth", val); + if (err) { + brcmf_err("could not set wpa_auth (%d)\n", err); + return err; + } + } + sec = &profile->sec; + sec->wpa_auth = sme->crypto.akm_suites[0]; + + return err; +} + +static s32 +brcmf_set_sharedkey(struct net_device *ndev, + struct cfg80211_connect_params *sme) +{ + struct brcmf_cfg80211_profile *profile = ndev_to_prof(ndev); + struct brcmf_cfg80211_security *sec; + struct brcmf_wsec_key key; + s32 val; + s32 err = 0; + + brcmf_dbg(CONN, "key len (%d)\n", sme->key_len); + + if (sme->key_len == 0) + return 0; + + sec = &profile->sec; + brcmf_dbg(CONN, "wpa_versions 0x%x cipher_pairwise 0x%x\n", + sec->wpa_versions, sec->cipher_pairwise); + + if (sec->wpa_versions & (NL80211_WPA_VERSION_1 | NL80211_WPA_VERSION_2)) + return 0; + + if (!(sec->cipher_pairwise & + (WLAN_CIPHER_SUITE_WEP40 | WLAN_CIPHER_SUITE_WEP104))) + return 0; + + memset(&key, 0, sizeof(key)); + key.len = (u32) sme->key_len; + key.index = (u32) sme->key_idx; + if (key.len > sizeof(key.data)) { + brcmf_err("Too long key length (%u)\n", key.len); + return -EINVAL; + } + memcpy(key.data, sme->key, key.len); + key.flags = BRCMF_PRIMARY_KEY; + switch (sec->cipher_pairwise) { + case WLAN_CIPHER_SUITE_WEP40: + key.algo = CRYPTO_ALGO_WEP1; + break; + case WLAN_CIPHER_SUITE_WEP104: + key.algo = CRYPTO_ALGO_WEP128; + break; + default: + brcmf_err("Invalid algorithm (%d)\n", + sme->crypto.ciphers_pairwise[0]); + return -EINVAL; + } + /* Set the new key/index */ + brcmf_dbg(CONN, "key length (%d) key index (%d) algo (%d)\n", + key.len, key.index, key.algo); + brcmf_dbg(CONN, "key \"%s\"\n", key.data); + err = send_key_to_dongle(ndev, &key); + if (err) + return err; + + if (sec->auth_type == NL80211_AUTHTYPE_SHARED_KEY) { + brcmf_dbg(CONN, "set auth_type to shared key\n"); + val = WL_AUTH_SHARED_KEY; /* shared key */ + err = brcmf_fil_bsscfg_int_set(netdev_priv(ndev), "auth", val); + if (err) + brcmf_err("set auth failed (%d)\n", err); + } + return err; +} + +static +enum nl80211_auth_type brcmf_war_auth_type(struct brcmf_if *ifp, + enum nl80211_auth_type type) +{ + u32 ci; + if (type == NL80211_AUTHTYPE_AUTOMATIC) { + /* shift to ignore chip revision */ + ci = brcmf_get_chip_info(ifp) >> 4; + switch (ci) { + case 43236: + brcmf_dbg(CONN, "43236 WAR: use OPEN instead of AUTO\n"); + return NL80211_AUTHTYPE_OPEN_SYSTEM; + default: + break; + } + } + return type; +} + +static s32 +brcmf_cfg80211_connect(struct wiphy *wiphy, struct net_device *ndev, + struct cfg80211_connect_params *sme) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_cfg80211_profile *profile = &ifp->vif->profile; + struct ieee80211_channel *chan = sme->channel; + struct brcmf_join_params join_params; + size_t join_params_size; + const struct brcmf_tlv *rsn_ie; + const struct brcmf_vs_tlv *wpa_ie; + const void *ie; + u32 ie_len; + struct brcmf_ext_join_params_le *ext_join_params; + u16 chanspec; + s32 err = 0; + + brcmf_dbg(TRACE, "Enter\n"); + if (!check_vif_up(ifp->vif)) + return -EIO; + + if (!sme->ssid) { + brcmf_err("Invalid ssid\n"); + return -EOPNOTSUPP; + } + + if (ifp->vif == cfg->p2p.bss_idx[P2PAPI_BSSCFG_PRIMARY].vif) { + /* A normal (non P2P) connection request setup. */ + ie = NULL; + ie_len = 0; + /* find the WPA_IE */ + wpa_ie = brcmf_find_wpaie((u8 *)sme->ie, sme->ie_len); + if (wpa_ie) { + ie = wpa_ie; + ie_len = wpa_ie->len + TLV_HDR_LEN; + } else { + /* find the RSN_IE */ + rsn_ie = brcmf_parse_tlvs((const u8 *)sme->ie, + sme->ie_len, + WLAN_EID_RSN); + if (rsn_ie) { + ie = rsn_ie; + ie_len = rsn_ie->len + TLV_HDR_LEN; + } + } + brcmf_fil_iovar_data_set(ifp, "wpaie", ie, ie_len); + } + + err = brcmf_vif_set_mgmt_ie(ifp->vif, BRCMF_VNDR_IE_ASSOCREQ_FLAG, + sme->ie, sme->ie_len); + if (err) + brcmf_err("Set Assoc REQ IE Failed\n"); + else + brcmf_dbg(TRACE, "Applied Vndr IEs for Assoc request\n"); + + set_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state); + + if (chan) { + cfg->channel = + ieee80211_frequency_to_channel(chan->center_freq); + chanspec = channel_to_chanspec(&cfg->d11inf, chan); + brcmf_dbg(CONN, "channel=%d, center_req=%d, chanspec=0x%04x\n", + cfg->channel, chan->center_freq, chanspec); + } else { + cfg->channel = 0; + chanspec = 0; + } + + brcmf_dbg(INFO, "ie (%p), ie_len (%zd)\n", sme->ie, sme->ie_len); + + err = brcmf_set_wpa_version(ndev, sme); + if (err) { + brcmf_err("wl_set_wpa_version failed (%d)\n", err); + goto done; + } + + sme->auth_type = brcmf_war_auth_type(ifp, sme->auth_type); + err = brcmf_set_auth_type(ndev, sme); + if (err) { + brcmf_err("wl_set_auth_type failed (%d)\n", err); + goto done; + } + + err = brcmf_set_wsec_mode(ndev, sme, sme->mfp == NL80211_MFP_REQUIRED); + if (err) { + brcmf_err("wl_set_set_cipher failed (%d)\n", err); + goto done; + } + + err = brcmf_set_key_mgmt(ndev, sme); + if (err) { + brcmf_err("wl_set_key_mgmt failed (%d)\n", err); + goto done; + } + + err = brcmf_set_sharedkey(ndev, sme); + if (err) { + brcmf_err("brcmf_set_sharedkey failed (%d)\n", err); + goto done; + } + + profile->ssid.SSID_len = min_t(u32, (u32)sizeof(profile->ssid.SSID), + (u32)sme->ssid_len); + memcpy(&profile->ssid.SSID, sme->ssid, profile->ssid.SSID_len); + if (profile->ssid.SSID_len < IEEE80211_MAX_SSID_LEN) { + profile->ssid.SSID[profile->ssid.SSID_len] = 0; + brcmf_dbg(CONN, "SSID \"%s\", len (%d)\n", profile->ssid.SSID, + profile->ssid.SSID_len); + } + + /* Join with specific BSSID and cached SSID + * If SSID is zero join based on BSSID only + */ + join_params_size = offsetof(struct brcmf_ext_join_params_le, assoc_le) + + offsetof(struct brcmf_assoc_params_le, chanspec_list); + if (cfg->channel) + join_params_size += sizeof(u16); + ext_join_params = kzalloc(join_params_size, GFP_KERNEL); + if (ext_join_params == NULL) { + err = -ENOMEM; + goto done; + } + ext_join_params->ssid_le.SSID_len = cpu_to_le32(profile->ssid.SSID_len); + memcpy(&ext_join_params->ssid_le.SSID, sme->ssid, + profile->ssid.SSID_len); + + /* Set up join scan parameters */ + ext_join_params->scan_le.scan_type = -1; + ext_join_params->scan_le.home_time = cpu_to_le32(-1); + + if (sme->bssid) + memcpy(&ext_join_params->assoc_le.bssid, sme->bssid, ETH_ALEN); + else + memset(&ext_join_params->assoc_le.bssid, 0xFF, ETH_ALEN); + + if (cfg->channel) { + ext_join_params->assoc_le.chanspec_num = cpu_to_le32(1); + + ext_join_params->assoc_le.chanspec_list[0] = + cpu_to_le16(chanspec); + /* Increase dwell time to receive probe response or detect + * beacon from target AP at a noisy air only during connect + * command. + */ + ext_join_params->scan_le.active_time = + cpu_to_le32(BRCMF_SCAN_JOIN_ACTIVE_DWELL_TIME_MS); + ext_join_params->scan_le.passive_time = + cpu_to_le32(BRCMF_SCAN_JOIN_PASSIVE_DWELL_TIME_MS); + /* To sync with presence period of VSDB GO send probe request + * more frequently. Probe request will be stopped when it gets + * probe response from target AP/GO. + */ + ext_join_params->scan_le.nprobes = + cpu_to_le32(BRCMF_SCAN_JOIN_ACTIVE_DWELL_TIME_MS / + BRCMF_SCAN_JOIN_PROBE_INTERVAL_MS); + } else { + ext_join_params->scan_le.active_time = cpu_to_le32(-1); + ext_join_params->scan_le.passive_time = cpu_to_le32(-1); + ext_join_params->scan_le.nprobes = cpu_to_le32(-1); + } + + err = brcmf_fil_bsscfg_data_set(ifp, "join", ext_join_params, + join_params_size); + kfree(ext_join_params); + if (!err) + /* This is it. join command worked, we are done */ + goto done; + + /* join command failed, fallback to set ssid */ + memset(&join_params, 0, sizeof(join_params)); + join_params_size = sizeof(join_params.ssid_le); + + memcpy(&join_params.ssid_le.SSID, sme->ssid, profile->ssid.SSID_len); + join_params.ssid_le.SSID_len = cpu_to_le32(profile->ssid.SSID_len); + + if (sme->bssid) + memcpy(join_params.params_le.bssid, sme->bssid, ETH_ALEN); + else + memset(join_params.params_le.bssid, 0xFF, ETH_ALEN); + + if (cfg->channel) { + join_params.params_le.chanspec_list[0] = cpu_to_le16(chanspec); + join_params.params_le.chanspec_num = cpu_to_le32(1); + join_params_size += sizeof(join_params.params_le); + } + err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SET_SSID, + &join_params, join_params_size); + if (err) + brcmf_err("BRCMF_C_SET_SSID failed (%d)\n", err); + +done: + if (err) + clear_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state); + brcmf_dbg(TRACE, "Exit\n"); + return err; +} + +static s32 +brcmf_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *ndev, + u16 reason_code) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_cfg80211_profile *profile = &ifp->vif->profile; + struct brcmf_scb_val_le scbval; + s32 err = 0; + + brcmf_dbg(TRACE, "Enter. Reason code = %d\n", reason_code); + if (!check_vif_up(ifp->vif)) + return -EIO; + + clear_bit(BRCMF_VIF_STATUS_CONNECTED, &ifp->vif->sme_state); + cfg80211_disconnected(ndev, reason_code, NULL, 0, GFP_KERNEL); + + memcpy(&scbval.ea, &profile->bssid, ETH_ALEN); + scbval.val = cpu_to_le32(reason_code); + err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_DISASSOC, + &scbval, sizeof(scbval)); + if (err) + brcmf_err("error (%d)\n", err); + + brcmf_dbg(TRACE, "Exit\n"); + return err; +} + +static s32 +brcmf_cfg80211_set_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev, + enum nl80211_tx_power_setting type, s32 mbm) +{ + + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct net_device *ndev = cfg_to_ndev(cfg); + struct brcmf_if *ifp = netdev_priv(ndev); + u16 txpwrmw; + s32 err = 0; + s32 disable = 0; + s32 dbm = MBM_TO_DBM(mbm); + + brcmf_dbg(TRACE, "Enter\n"); + if (!check_vif_up(ifp->vif)) + return -EIO; + + switch (type) { + case NL80211_TX_POWER_AUTOMATIC: + break; + case NL80211_TX_POWER_LIMITED: + case NL80211_TX_POWER_FIXED: + if (dbm < 0) { + brcmf_err("TX_POWER_FIXED - dbm is negative\n"); + err = -EINVAL; + goto done; + } + break; + } + /* Make sure radio is off or on as far as software is concerned */ + disable = WL_RADIO_SW_DISABLE << 16; + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_RADIO, disable); + if (err) + brcmf_err("WLC_SET_RADIO error (%d)\n", err); + + if (dbm > 0xffff) + txpwrmw = 0xffff; + else + txpwrmw = (u16) dbm; + err = brcmf_fil_iovar_int_set(ifp, "qtxpower", + (s32)brcmf_mw_to_qdbm(txpwrmw)); + if (err) + brcmf_err("qtxpower error (%d)\n", err); + cfg->conf->tx_power = dbm; + +done: + brcmf_dbg(TRACE, "Exit\n"); + return err; +} + +static s32 brcmf_cfg80211_get_tx_power(struct wiphy *wiphy, + struct wireless_dev *wdev, + s32 *dbm) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg)); + s32 txpwrdbm; + u8 result; + s32 err = 0; + + brcmf_dbg(TRACE, "Enter\n"); + if (!check_vif_up(ifp->vif)) + return -EIO; + + err = brcmf_fil_iovar_int_get(ifp, "qtxpower", &txpwrdbm); + if (err) { + brcmf_err("error (%d)\n", err); + goto done; + } + + result = (u8) (txpwrdbm & ~WL_TXPWR_OVERRIDE); + *dbm = (s32) brcmf_qdbm_to_mw(result); + +done: + brcmf_dbg(TRACE, "Exit\n"); + return err; +} + +static s32 +brcmf_cfg80211_config_default_key(struct wiphy *wiphy, struct net_device *ndev, + u8 key_idx, bool unicast, bool multicast) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + u32 index; + u32 wsec; + s32 err = 0; + + brcmf_dbg(TRACE, "Enter\n"); + brcmf_dbg(CONN, "key index (%d)\n", key_idx); + if (!check_vif_up(ifp->vif)) + return -EIO; + + err = brcmf_fil_bsscfg_int_get(ifp, "wsec", &wsec); + if (err) { + brcmf_err("WLC_GET_WSEC error (%d)\n", err); + goto done; + } + + if (wsec & WEP_ENABLED) { + /* Just select a new current key */ + index = key_idx; + err = brcmf_fil_cmd_int_set(ifp, + BRCMF_C_SET_KEY_PRIMARY, index); + if (err) + brcmf_err("error (%d)\n", err); + } +done: + brcmf_dbg(TRACE, "Exit\n"); + return err; +} + +static s32 +brcmf_add_keyext(struct wiphy *wiphy, struct net_device *ndev, + u8 key_idx, const u8 *mac_addr, struct key_params *params) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_wsec_key key; + s32 err = 0; + u8 keybuf[8]; + + memset(&key, 0, sizeof(key)); + key.index = (u32) key_idx; + /* Instead of bcast for ea address for default wep keys, + driver needs it to be Null */ + if (!is_multicast_ether_addr(mac_addr)) + memcpy((char *)&key.ea, (void *)mac_addr, ETH_ALEN); + key.len = (u32) params->key_len; + /* check for key index change */ + if (key.len == 0) { + /* key delete */ + err = send_key_to_dongle(ndev, &key); + if (err) + brcmf_err("key delete error (%d)\n", err); + } else { + if (key.len > sizeof(key.data)) { + brcmf_err("Invalid key length (%d)\n", key.len); + return -EINVAL; + } + + brcmf_dbg(CONN, "Setting the key index %d\n", key.index); + memcpy(key.data, params->key, key.len); + + if (!brcmf_is_apmode(ifp->vif) && + (params->cipher == WLAN_CIPHER_SUITE_TKIP)) { + brcmf_dbg(CONN, "Swapping RX/TX MIC key\n"); + memcpy(keybuf, &key.data[24], sizeof(keybuf)); + memcpy(&key.data[24], &key.data[16], sizeof(keybuf)); + memcpy(&key.data[16], keybuf, sizeof(keybuf)); + } + + /* if IW_ENCODE_EXT_RX_SEQ_VALID set */ + if (params->seq && params->seq_len == 6) { + /* rx iv */ + u8 *ivptr; + ivptr = (u8 *) params->seq; + key.rxiv.hi = (ivptr[5] << 24) | (ivptr[4] << 16) | + (ivptr[3] << 8) | ivptr[2]; + key.rxiv.lo = (ivptr[1] << 8) | ivptr[0]; + key.iv_initialized = true; + } + + switch (params->cipher) { + case WLAN_CIPHER_SUITE_WEP40: + key.algo = CRYPTO_ALGO_WEP1; + brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_WEP40\n"); + break; + case WLAN_CIPHER_SUITE_WEP104: + key.algo = CRYPTO_ALGO_WEP128; + brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_WEP104\n"); + break; + case WLAN_CIPHER_SUITE_TKIP: + key.algo = CRYPTO_ALGO_TKIP; + brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_TKIP\n"); + break; + case WLAN_CIPHER_SUITE_AES_CMAC: + key.algo = CRYPTO_ALGO_AES_CCM; + brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_AES_CMAC\n"); + break; + case WLAN_CIPHER_SUITE_CCMP: + key.algo = CRYPTO_ALGO_AES_CCM; + brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_CCMP\n"); + break; + default: + brcmf_err("Invalid cipher (0x%x)\n", params->cipher); + return -EINVAL; + } + err = send_key_to_dongle(ndev, &key); + if (err) + brcmf_err("wsec_key error (%d)\n", err); + } + return err; +} + +static s32 +brcmf_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev, + u8 key_idx, bool pairwise, const u8 *mac_addr, + struct key_params *params) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_wsec_key key; + s32 val; + s32 wsec; + s32 err = 0; + u8 keybuf[8]; + + brcmf_dbg(TRACE, "Enter\n"); + brcmf_dbg(CONN, "key index (%d)\n", key_idx); + if (!check_vif_up(ifp->vif)) + return -EIO; + + if (mac_addr && + (params->cipher != WLAN_CIPHER_SUITE_WEP40) && + (params->cipher != WLAN_CIPHER_SUITE_WEP104)) { + brcmf_dbg(TRACE, "Exit"); + return brcmf_add_keyext(wiphy, ndev, key_idx, mac_addr, params); + } + memset(&key, 0, sizeof(key)); + + key.len = (u32) params->key_len; + key.index = (u32) key_idx; + + if (key.len > sizeof(key.data)) { + brcmf_err("Too long key length (%u)\n", key.len); + err = -EINVAL; + goto done; + } + memcpy(key.data, params->key, key.len); + + key.flags = BRCMF_PRIMARY_KEY; + switch (params->cipher) { + case WLAN_CIPHER_SUITE_WEP40: + key.algo = CRYPTO_ALGO_WEP1; + val = WEP_ENABLED; + brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_WEP40\n"); + break; + case WLAN_CIPHER_SUITE_WEP104: + key.algo = CRYPTO_ALGO_WEP128; + val = WEP_ENABLED; + brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_WEP104\n"); + break; + case WLAN_CIPHER_SUITE_TKIP: + if (!brcmf_is_apmode(ifp->vif)) { + brcmf_dbg(CONN, "Swapping RX/TX MIC key\n"); + memcpy(keybuf, &key.data[24], sizeof(keybuf)); + memcpy(&key.data[24], &key.data[16], sizeof(keybuf)); + memcpy(&key.data[16], keybuf, sizeof(keybuf)); + } + key.algo = CRYPTO_ALGO_TKIP; + val = TKIP_ENABLED; + brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_TKIP\n"); + break; + case WLAN_CIPHER_SUITE_AES_CMAC: + key.algo = CRYPTO_ALGO_AES_CCM; + val = AES_ENABLED; + brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_AES_CMAC\n"); + break; + case WLAN_CIPHER_SUITE_CCMP: + key.algo = CRYPTO_ALGO_AES_CCM; + val = AES_ENABLED; + brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_CCMP\n"); + break; + default: + brcmf_err("Invalid cipher (0x%x)\n", params->cipher); + err = -EINVAL; + goto done; + } + + err = send_key_to_dongle(ndev, &key); + if (err) + goto done; + + err = brcmf_fil_bsscfg_int_get(ifp, "wsec", &wsec); + if (err) { + brcmf_err("get wsec error (%d)\n", err); + goto done; + } + wsec |= val; + err = brcmf_fil_bsscfg_int_set(ifp, "wsec", wsec); + if (err) { + brcmf_err("set wsec error (%d)\n", err); + goto done; + } + +done: + brcmf_dbg(TRACE, "Exit\n"); + return err; +} + +static s32 +brcmf_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev, + u8 key_idx, bool pairwise, const u8 *mac_addr) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_wsec_key key; + s32 err = 0; + + brcmf_dbg(TRACE, "Enter\n"); + if (!check_vif_up(ifp->vif)) + return -EIO; + + if (key_idx >= DOT11_MAX_DEFAULT_KEYS) { + /* we ignore this key index in this case */ + brcmf_err("invalid key index (%d)\n", key_idx); + return -EINVAL; + } + + memset(&key, 0, sizeof(key)); + + key.index = (u32) key_idx; + key.flags = BRCMF_PRIMARY_KEY; + key.algo = CRYPTO_ALGO_OFF; + + brcmf_dbg(CONN, "key index (%d)\n", key_idx); + + /* Set the new key/index */ + err = send_key_to_dongle(ndev, &key); + + brcmf_dbg(TRACE, "Exit\n"); + return err; +} + +static s32 +brcmf_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev, + u8 key_idx, bool pairwise, const u8 *mac_addr, void *cookie, + void (*callback) (void *cookie, struct key_params * params)) +{ + struct key_params params; + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_cfg80211_profile *profile = &ifp->vif->profile; + struct brcmf_cfg80211_security *sec; + s32 wsec; + s32 err = 0; + + brcmf_dbg(TRACE, "Enter\n"); + brcmf_dbg(CONN, "key index (%d)\n", key_idx); + if (!check_vif_up(ifp->vif)) + return -EIO; + + memset(¶ms, 0, sizeof(params)); + + err = brcmf_fil_bsscfg_int_get(ifp, "wsec", &wsec); + if (err) { + brcmf_err("WLC_GET_WSEC error (%d)\n", err); + /* Ignore this error, may happen during DISASSOC */ + err = -EAGAIN; + goto done; + } + if (wsec & WEP_ENABLED) { + sec = &profile->sec; + if (sec->cipher_pairwise & WLAN_CIPHER_SUITE_WEP40) { + params.cipher = WLAN_CIPHER_SUITE_WEP40; + brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_WEP40\n"); + } else if (sec->cipher_pairwise & WLAN_CIPHER_SUITE_WEP104) { + params.cipher = WLAN_CIPHER_SUITE_WEP104; + brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_WEP104\n"); + } + } else if (wsec & TKIP_ENABLED) { + params.cipher = WLAN_CIPHER_SUITE_TKIP; + brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_TKIP\n"); + } else if (wsec & AES_ENABLED) { + params.cipher = WLAN_CIPHER_SUITE_AES_CMAC; + brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_AES_CMAC\n"); + } else { + brcmf_err("Invalid algo (0x%x)\n", wsec); + err = -EINVAL; + goto done; + } + callback(cookie, ¶ms); + +done: + brcmf_dbg(TRACE, "Exit\n"); + return err; +} + +static s32 +brcmf_cfg80211_config_default_mgmt_key(struct wiphy *wiphy, + struct net_device *ndev, u8 key_idx) +{ + brcmf_dbg(INFO, "Not supported\n"); + + return -EOPNOTSUPP; +} + +static s32 +brcmf_cfg80211_get_station(struct wiphy *wiphy, struct net_device *ndev, + const u8 *mac, struct station_info *sinfo) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_cfg80211_profile *profile = &ifp->vif->profile; + struct brcmf_scb_val_le scb_val; + int rssi; + s32 rate; + s32 err = 0; + u8 *bssid = profile->bssid; + struct brcmf_sta_info_le sta_info_le; + u32 beacon_period; + u32 dtim_period; + + brcmf_dbg(TRACE, "Enter, MAC %pM\n", mac); + if (!check_vif_up(ifp->vif)) + return -EIO; + + if (brcmf_is_apmode(ifp->vif)) { + memcpy(&sta_info_le, mac, ETH_ALEN); + err = brcmf_fil_iovar_data_get(ifp, "sta_info", + &sta_info_le, + sizeof(sta_info_le)); + if (err < 0) { + brcmf_err("GET STA INFO failed, %d\n", err); + goto done; + } + sinfo->filled = STATION_INFO_INACTIVE_TIME; + sinfo->inactive_time = le32_to_cpu(sta_info_le.idle) * 1000; + if (le32_to_cpu(sta_info_le.flags) & BRCMF_STA_ASSOC) { + sinfo->filled |= STATION_INFO_CONNECTED_TIME; + sinfo->connected_time = le32_to_cpu(sta_info_le.in); + } + brcmf_dbg(TRACE, "STA idle time : %d ms, connected time :%d sec\n", + sinfo->inactive_time, sinfo->connected_time); + } else if (ifp->vif->wdev.iftype == NL80211_IFTYPE_STATION) { + if (memcmp(mac, bssid, ETH_ALEN)) { + brcmf_err("Wrong Mac address cfg_mac-%pM wl_bssid-%pM\n", + mac, bssid); + err = -ENOENT; + goto done; + } + /* Report the current tx rate */ + err = brcmf_fil_cmd_int_get(ifp, BRCMF_C_GET_RATE, &rate); + if (err) { + brcmf_err("Could not get rate (%d)\n", err); + goto done; + } else { + sinfo->filled |= STATION_INFO_TX_BITRATE; + sinfo->txrate.legacy = rate * 5; + brcmf_dbg(CONN, "Rate %d Mbps\n", rate / 2); + } + + if (test_bit(BRCMF_VIF_STATUS_CONNECTED, + &ifp->vif->sme_state)) { + memset(&scb_val, 0, sizeof(scb_val)); + err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_RSSI, + &scb_val, sizeof(scb_val)); + if (err) { + brcmf_err("Could not get rssi (%d)\n", err); + goto done; + } else { + rssi = le32_to_cpu(scb_val.val); + sinfo->filled |= STATION_INFO_SIGNAL; + sinfo->signal = rssi; + brcmf_dbg(CONN, "RSSI %d dBm\n", rssi); + } + err = brcmf_fil_cmd_int_get(ifp, BRCMF_C_GET_BCNPRD, + &beacon_period); + if (err) { + brcmf_err("Could not get beacon period (%d)\n", + err); + goto done; + } else { + sinfo->bss_param.beacon_interval = + beacon_period; + brcmf_dbg(CONN, "Beacon peroid %d\n", + beacon_period); + } + err = brcmf_fil_cmd_int_get(ifp, BRCMF_C_GET_DTIMPRD, + &dtim_period); + if (err) { + brcmf_err("Could not get DTIM period (%d)\n", + err); + goto done; + } else { + sinfo->bss_param.dtim_period = dtim_period; + brcmf_dbg(CONN, "DTIM peroid %d\n", + dtim_period); + } + sinfo->filled |= STATION_INFO_BSS_PARAM; + } + } else + err = -EPERM; +done: + brcmf_dbg(TRACE, "Exit\n"); + return err; +} + +static s32 +brcmf_cfg80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *ndev, + bool enabled, s32 timeout) +{ + s32 pm; + s32 err = 0; + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct brcmf_if *ifp = netdev_priv(ndev); + + brcmf_dbg(TRACE, "Enter\n"); + + /* + * Powersave enable/disable request is coming from the + * cfg80211 even before the interface is up. In that + * scenario, driver will be storing the power save + * preference in cfg struct to apply this to + * FW later while initializing the dongle + */ + cfg->pwr_save = enabled; + if (!check_vif_up(ifp->vif)) { + + brcmf_dbg(INFO, "Device is not ready, storing the value in cfg_info struct\n"); + goto done; + } + + pm = enabled ? PM_FAST : PM_OFF; + /* Do not enable the power save after assoc if it is a p2p interface */ + if (ifp->vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT) { + brcmf_dbg(INFO, "Do not enable power save for P2P clients\n"); + pm = PM_OFF; + } + brcmf_dbg(INFO, "power save %s\n", (pm ? "enabled" : "disabled")); + + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PM, pm); + if (err) { + if (err == -ENODEV) + brcmf_err("net_device is not ready yet\n"); + else + brcmf_err("error (%d)\n", err); + } +done: + brcmf_dbg(TRACE, "Exit\n"); + return err; +} + +static s32 brcmf_inform_single_bss(struct brcmf_cfg80211_info *cfg, + struct brcmf_bss_info_le *bi) +{ + struct wiphy *wiphy = cfg_to_wiphy(cfg); + struct ieee80211_channel *notify_channel; + struct cfg80211_bss *bss; + struct ieee80211_supported_band *band; + struct brcmu_chan ch; + s32 err = 0; + u16 channel; + u32 freq; + u16 notify_capability; + u16 notify_interval; + u8 *notify_ie; + size_t notify_ielen; + s32 notify_signal; + + if (le32_to_cpu(bi->length) > WL_BSS_INFO_MAX) { + brcmf_err("Bss info is larger than buffer. Discarding\n"); + return 0; + } + + if (!bi->ctl_ch) { + ch.chspec = le16_to_cpu(bi->chanspec); + cfg->d11inf.decchspec(&ch); + bi->ctl_ch = ch.chnum; + } + channel = bi->ctl_ch; + + if (channel <= CH_MAX_2G_CHANNEL) + band = wiphy->bands[IEEE80211_BAND_2GHZ]; + else + band = wiphy->bands[IEEE80211_BAND_5GHZ]; + + freq = ieee80211_channel_to_frequency(channel, band->band); + notify_channel = ieee80211_get_channel(wiphy, freq); + + notify_capability = le16_to_cpu(bi->capability); + notify_interval = le16_to_cpu(bi->beacon_period); + notify_ie = (u8 *)bi + le16_to_cpu(bi->ie_offset); + notify_ielen = le32_to_cpu(bi->ie_length); + notify_signal = (s16)le16_to_cpu(bi->RSSI) * 100; + + brcmf_dbg(CONN, "bssid: %pM\n", bi->BSSID); + brcmf_dbg(CONN, "Channel: %d(%d)\n", channel, freq); + brcmf_dbg(CONN, "Capability: %X\n", notify_capability); + brcmf_dbg(CONN, "Beacon interval: %d\n", notify_interval); + brcmf_dbg(CONN, "Signal: %d\n", notify_signal); + + bss = cfg80211_inform_bss(wiphy, notify_channel, (const u8 *)bi->BSSID, + 0, notify_capability, notify_interval, notify_ie, + notify_ielen, notify_signal, GFP_KERNEL); + + if (!bss) + return -ENOMEM; + + cfg80211_put_bss(wiphy, bss); + + return err; +} + +static struct brcmf_bss_info_le * +next_bss_le(struct brcmf_scan_results *list, struct brcmf_bss_info_le *bss) +{ + if (bss == NULL) + return list->bss_info_le; + return (struct brcmf_bss_info_le *)((unsigned long)bss + + le32_to_cpu(bss->length)); +} + +static s32 brcmf_inform_bss(struct brcmf_cfg80211_info *cfg) +{ + struct brcmf_scan_results *bss_list; + struct brcmf_bss_info_le *bi = NULL; /* must be initialized */ + s32 err = 0; + int i; + + bss_list = cfg->bss_list; + if (bss_list->count != 0 && + bss_list->version != BRCMF_BSS_INFO_VERSION) { + brcmf_err("Version %d != WL_BSS_INFO_VERSION\n", + bss_list->version); + return -EOPNOTSUPP; + } + brcmf_dbg(SCAN, "scanned AP count (%d)\n", bss_list->count); + for (i = 0; i < bss_list->count; i++) { + bi = next_bss_le(bss_list, bi); + err = brcmf_inform_single_bss(cfg, bi); + if (err) + break; + } + return err; +} + +static s32 wl_inform_ibss(struct brcmf_cfg80211_info *cfg, + struct net_device *ndev, const u8 *bssid) +{ + struct wiphy *wiphy = cfg_to_wiphy(cfg); + struct ieee80211_channel *notify_channel; + struct brcmf_bss_info_le *bi = NULL; + struct ieee80211_supported_band *band; + struct cfg80211_bss *bss; + struct brcmu_chan ch; + u8 *buf = NULL; + s32 err = 0; + u32 freq; + u16 notify_capability; + u16 notify_interval; + u8 *notify_ie; + size_t notify_ielen; + s32 notify_signal; + + brcmf_dbg(TRACE, "Enter\n"); + + buf = kzalloc(WL_BSS_INFO_MAX, GFP_KERNEL); + if (buf == NULL) { + err = -ENOMEM; + goto CleanUp; + } + + *(__le32 *)buf = cpu_to_le32(WL_BSS_INFO_MAX); + + err = brcmf_fil_cmd_data_get(netdev_priv(ndev), BRCMF_C_GET_BSS_INFO, + buf, WL_BSS_INFO_MAX); + if (err) { + brcmf_err("WLC_GET_BSS_INFO failed: %d\n", err); + goto CleanUp; + } + + bi = (struct brcmf_bss_info_le *)(buf + 4); + + ch.chspec = le16_to_cpu(bi->chanspec); + cfg->d11inf.decchspec(&ch); + + if (ch.band == BRCMU_CHAN_BAND_2G) + band = wiphy->bands[IEEE80211_BAND_2GHZ]; + else + band = wiphy->bands[IEEE80211_BAND_5GHZ]; + + freq = ieee80211_channel_to_frequency(ch.chnum, band->band); + notify_channel = ieee80211_get_channel(wiphy, freq); + + notify_capability = le16_to_cpu(bi->capability); + notify_interval = le16_to_cpu(bi->beacon_period); + notify_ie = (u8 *)bi + le16_to_cpu(bi->ie_offset); + notify_ielen = le32_to_cpu(bi->ie_length); + notify_signal = (s16)le16_to_cpu(bi->RSSI) * 100; + + brcmf_dbg(CONN, "channel: %d(%d)\n", ch.chnum, freq); + brcmf_dbg(CONN, "capability: %X\n", notify_capability); + brcmf_dbg(CONN, "beacon interval: %d\n", notify_interval); + brcmf_dbg(CONN, "signal: %d\n", notify_signal); + + bss = cfg80211_inform_bss(wiphy, notify_channel, bssid, + 0, notify_capability, notify_interval, + notify_ie, notify_ielen, notify_signal, GFP_KERNEL); + + if (!bss) { + err = -ENOMEM; + goto CleanUp; + } + + cfg80211_put_bss(wiphy, bss); + +CleanUp: + + kfree(buf); + + brcmf_dbg(TRACE, "Exit\n"); + + return err; +} + +static s32 brcmf_update_bss_info(struct brcmf_cfg80211_info *cfg, + struct brcmf_if *ifp) +{ + struct brcmf_cfg80211_profile *profile = ndev_to_prof(ifp->ndev); + struct brcmf_bss_info_le *bi; + struct brcmf_ssid *ssid; + const struct brcmf_tlv *tim; + u16 beacon_interval; + u8 dtim_period; + size_t ie_len; + u8 *ie; + s32 err = 0; + + brcmf_dbg(TRACE, "Enter\n"); + if (brcmf_is_ibssmode(ifp->vif)) + return err; + + ssid = &profile->ssid; + + *(__le32 *)cfg->extra_buf = cpu_to_le32(WL_EXTRA_BUF_MAX); + err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSS_INFO, + cfg->extra_buf, WL_EXTRA_BUF_MAX); + if (err) { + brcmf_err("Could not get bss info %d\n", err); + goto update_bss_info_out; + } + + bi = (struct brcmf_bss_info_le *)(cfg->extra_buf + 4); + err = brcmf_inform_single_bss(cfg, bi); + if (err) + goto update_bss_info_out; + + ie = ((u8 *)bi) + le16_to_cpu(bi->ie_offset); + ie_len = le32_to_cpu(bi->ie_length); + beacon_interval = le16_to_cpu(bi->beacon_period); + + tim = brcmf_parse_tlvs(ie, ie_len, WLAN_EID_TIM); + if (tim) + dtim_period = tim->data[1]; + else { + /* + * active scan was done so we could not get dtim + * information out of probe response. + * so we speficially query dtim information to dongle. + */ + u32 var; + err = brcmf_fil_iovar_int_get(ifp, "dtim_assoc", &var); + if (err) { + brcmf_err("wl dtim_assoc failed (%d)\n", err); + goto update_bss_info_out; + } + dtim_period = (u8)var; + } + +update_bss_info_out: + brcmf_dbg(TRACE, "Exit"); + return err; +} + +void brcmf_abort_scanning(struct brcmf_cfg80211_info *cfg) +{ + struct escan_info *escan = &cfg->escan_info; + + set_bit(BRCMF_SCAN_STATUS_ABORT, &cfg->scan_status); + if (cfg->scan_request) { + escan->escan_state = WL_ESCAN_STATE_IDLE; + brcmf_notify_escan_complete(cfg, escan->ifp, true, true); + } + clear_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status); + clear_bit(BRCMF_SCAN_STATUS_ABORT, &cfg->scan_status); +} + +static void brcmf_cfg80211_escan_timeout_worker(struct work_struct *work) +{ + struct brcmf_cfg80211_info *cfg = + container_of(work, struct brcmf_cfg80211_info, + escan_timeout_work); + + brcmf_notify_escan_complete(cfg, cfg->escan_info.ifp, true, true); +} + +static void brcmf_escan_timeout(unsigned long data) +{ + struct brcmf_cfg80211_info *cfg = + (struct brcmf_cfg80211_info *)data; + + if (cfg->scan_request) { + brcmf_err("timer expired\n"); + schedule_work(&cfg->escan_timeout_work); + } +} + +static s32 +brcmf_compare_update_same_bss(struct brcmf_cfg80211_info *cfg, + struct brcmf_bss_info_le *bss, + struct brcmf_bss_info_le *bss_info_le) +{ + struct brcmu_chan ch_bss, ch_bss_info_le; + + ch_bss.chspec = le16_to_cpu(bss->chanspec); + cfg->d11inf.decchspec(&ch_bss); + ch_bss_info_le.chspec = le16_to_cpu(bss_info_le->chanspec); + cfg->d11inf.decchspec(&ch_bss_info_le); + + if (!memcmp(&bss_info_le->BSSID, &bss->BSSID, ETH_ALEN) && + ch_bss.band == ch_bss_info_le.band && + bss_info_le->SSID_len == bss->SSID_len && + !memcmp(bss_info_le->SSID, bss->SSID, bss_info_le->SSID_len)) { + if ((bss->flags & BRCMF_BSS_RSSI_ON_CHANNEL) == + (bss_info_le->flags & BRCMF_BSS_RSSI_ON_CHANNEL)) { + s16 bss_rssi = le16_to_cpu(bss->RSSI); + s16 bss_info_rssi = le16_to_cpu(bss_info_le->RSSI); + + /* preserve max RSSI if the measurements are + * both on-channel or both off-channel + */ + if (bss_info_rssi > bss_rssi) + bss->RSSI = bss_info_le->RSSI; + } else if ((bss->flags & BRCMF_BSS_RSSI_ON_CHANNEL) && + (bss_info_le->flags & BRCMF_BSS_RSSI_ON_CHANNEL) == 0) { + /* preserve the on-channel rssi measurement + * if the new measurement is off channel + */ + bss->RSSI = bss_info_le->RSSI; + bss->flags |= BRCMF_BSS_RSSI_ON_CHANNEL; + } + return 1; + } + return 0; +} + +static s32 +brcmf_cfg80211_escan_handler(struct brcmf_if *ifp, + const struct brcmf_event_msg *e, void *data) +{ + struct brcmf_cfg80211_info *cfg = ifp->drvr->config; + s32 status; + s32 err = 0; + struct brcmf_escan_result_le *escan_result_le; + struct brcmf_bss_info_le *bss_info_le; + struct brcmf_bss_info_le *bss = NULL; + u32 bi_length; + struct brcmf_scan_results *list; + u32 i; + bool aborted; + + status = e->status; + + if (!test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) { + brcmf_err("scan not ready, bssidx=%d\n", ifp->bssidx); + return -EPERM; + } + + if (status == BRCMF_E_STATUS_PARTIAL) { + brcmf_dbg(SCAN, "ESCAN Partial result\n"); + escan_result_le = (struct brcmf_escan_result_le *) data; + if (!escan_result_le) { + brcmf_err("Invalid escan result (NULL pointer)\n"); + goto exit; + } + if (le16_to_cpu(escan_result_le->bss_count) != 1) { + brcmf_err("Invalid bss_count %d: ignoring\n", + escan_result_le->bss_count); + goto exit; + } + bss_info_le = &escan_result_le->bss_info_le; + + if (brcmf_p2p_scan_finding_common_channel(cfg, bss_info_le)) + goto exit; + + if (!cfg->scan_request) { + brcmf_dbg(SCAN, "result without cfg80211 request\n"); + goto exit; + } + + bi_length = le32_to_cpu(bss_info_le->length); + if (bi_length != (le32_to_cpu(escan_result_le->buflen) - + WL_ESCAN_RESULTS_FIXED_SIZE)) { + brcmf_err("Invalid bss_info length %d: ignoring\n", + bi_length); + goto exit; + } + + if (!(cfg_to_wiphy(cfg)->interface_modes & + BIT(NL80211_IFTYPE_ADHOC))) { + if (le16_to_cpu(bss_info_le->capability) & + WLAN_CAPABILITY_IBSS) { + brcmf_err("Ignoring IBSS result\n"); + goto exit; + } + } + + list = (struct brcmf_scan_results *) + cfg->escan_info.escan_buf; + if (bi_length > WL_ESCAN_BUF_SIZE - list->buflen) { + brcmf_err("Buffer is too small: ignoring\n"); + goto exit; + } + + for (i = 0; i < list->count; i++) { + bss = bss ? (struct brcmf_bss_info_le *) + ((unsigned char *)bss + + le32_to_cpu(bss->length)) : list->bss_info_le; + if (brcmf_compare_update_same_bss(cfg, bss, + bss_info_le)) + goto exit; + } + memcpy(&(cfg->escan_info.escan_buf[list->buflen]), + bss_info_le, bi_length); + list->version = le32_to_cpu(bss_info_le->version); + list->buflen += bi_length; + list->count++; + } else { + cfg->escan_info.escan_state = WL_ESCAN_STATE_IDLE; + if (brcmf_p2p_scan_finding_common_channel(cfg, NULL)) + goto exit; + if (cfg->scan_request) { + cfg->bss_list = (struct brcmf_scan_results *) + cfg->escan_info.escan_buf; + brcmf_inform_bss(cfg); + aborted = status != BRCMF_E_STATUS_SUCCESS; + brcmf_notify_escan_complete(cfg, ifp, aborted, + false); + } else + brcmf_dbg(SCAN, "Ignored scan complete result 0x%x\n", + status); + } +exit: + return err; +} + +static void brcmf_init_escan(struct brcmf_cfg80211_info *cfg) +{ + brcmf_fweh_register(cfg->pub, BRCMF_E_ESCAN_RESULT, + brcmf_cfg80211_escan_handler); + cfg->escan_info.escan_state = WL_ESCAN_STATE_IDLE; + /* Init scan_timeout timer */ + init_timer(&cfg->escan_timeout); + cfg->escan_timeout.data = (unsigned long) cfg; + cfg->escan_timeout.function = brcmf_escan_timeout; + INIT_WORK(&cfg->escan_timeout_work, + brcmf_cfg80211_escan_timeout_worker); +} + +static __always_inline void brcmf_delay(u32 ms) +{ + if (ms < 1000 / HZ) { + cond_resched(); + mdelay(ms); + } else { + msleep(ms); + } +} + +static s32 brcmf_cfg80211_resume(struct wiphy *wiphy) +{ + brcmf_dbg(TRACE, "Enter\n"); + + return 0; +} + +static s32 brcmf_cfg80211_suspend(struct wiphy *wiphy, + struct cfg80211_wowlan *wow) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct net_device *ndev = cfg_to_ndev(cfg); + struct brcmf_cfg80211_vif *vif; + + brcmf_dbg(TRACE, "Enter\n"); + + /* + * if the primary net_device is not READY there is nothing + * we can do but pray resume goes smoothly. + */ + vif = ((struct brcmf_if *)netdev_priv(ndev))->vif; + if (!check_vif_up(vif)) + goto exit; + + list_for_each_entry(vif, &cfg->vif_list, list) { + if (!test_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state)) + continue; + /* + * While going to suspend if associated with AP disassociate + * from AP to save power while system is in suspended state + */ + brcmf_link_down(vif); + + /* Make sure WPA_Supplicant receives all the event + * generated due to DISASSOC call to the fw to keep + * the state fw and WPA_Supplicant state consistent + */ + brcmf_delay(500); + } + + /* end any scanning */ + if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) + brcmf_abort_scanning(cfg); + + /* Turn off watchdog timer */ + brcmf_set_mpc(netdev_priv(ndev), 1); + +exit: + brcmf_dbg(TRACE, "Exit\n"); + /* clear any scanning activity */ + cfg->scan_status = 0; + return 0; +} + +static __used s32 +brcmf_update_pmklist(struct net_device *ndev, + struct brcmf_cfg80211_pmk_list *pmk_list, s32 err) +{ + int i, j; + int pmkid_len; + + pmkid_len = le32_to_cpu(pmk_list->pmkids.npmkid); + + brcmf_dbg(CONN, "No of elements %d\n", pmkid_len); + for (i = 0; i < pmkid_len; i++) { + brcmf_dbg(CONN, "PMKID[%d]: %pM =\n", i, + &pmk_list->pmkids.pmkid[i].BSSID); + for (j = 0; j < WLAN_PMKID_LEN; j++) + brcmf_dbg(CONN, "%02x\n", + pmk_list->pmkids.pmkid[i].PMKID[j]); + } + + if (!err) + brcmf_fil_iovar_data_set(netdev_priv(ndev), "pmkid_info", + (char *)pmk_list, sizeof(*pmk_list)); + + return err; +} + +static s32 +brcmf_cfg80211_set_pmksa(struct wiphy *wiphy, struct net_device *ndev, + struct cfg80211_pmksa *pmksa) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct brcmf_if *ifp = netdev_priv(ndev); + struct pmkid_list *pmkids = &cfg->pmk_list->pmkids; + s32 err = 0; + int i; + int pmkid_len; + + brcmf_dbg(TRACE, "Enter\n"); + if (!check_vif_up(ifp->vif)) + return -EIO; + + pmkid_len = le32_to_cpu(pmkids->npmkid); + for (i = 0; i < pmkid_len; i++) + if (!memcmp(pmksa->bssid, pmkids->pmkid[i].BSSID, ETH_ALEN)) + break; + if (i < WL_NUM_PMKIDS_MAX) { + memcpy(pmkids->pmkid[i].BSSID, pmksa->bssid, ETH_ALEN); + memcpy(pmkids->pmkid[i].PMKID, pmksa->pmkid, WLAN_PMKID_LEN); + if (i == pmkid_len) { + pmkid_len++; + pmkids->npmkid = cpu_to_le32(pmkid_len); + } + } else + err = -EINVAL; + + brcmf_dbg(CONN, "set_pmksa,IW_PMKSA_ADD - PMKID: %pM =\n", + pmkids->pmkid[pmkid_len].BSSID); + for (i = 0; i < WLAN_PMKID_LEN; i++) + brcmf_dbg(CONN, "%02x\n", pmkids->pmkid[pmkid_len].PMKID[i]); + + err = brcmf_update_pmklist(ndev, cfg->pmk_list, err); + + brcmf_dbg(TRACE, "Exit\n"); + return err; +} + +static s32 +brcmf_cfg80211_del_pmksa(struct wiphy *wiphy, struct net_device *ndev, + struct cfg80211_pmksa *pmksa) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct brcmf_if *ifp = netdev_priv(ndev); + struct pmkid_list pmkid; + s32 err = 0; + int i, pmkid_len; + + brcmf_dbg(TRACE, "Enter\n"); + if (!check_vif_up(ifp->vif)) + return -EIO; + + memcpy(&pmkid.pmkid[0].BSSID, pmksa->bssid, ETH_ALEN); + memcpy(&pmkid.pmkid[0].PMKID, pmksa->pmkid, WLAN_PMKID_LEN); + + brcmf_dbg(CONN, "del_pmksa,IW_PMKSA_REMOVE - PMKID: %pM =\n", + &pmkid.pmkid[0].BSSID); + for (i = 0; i < WLAN_PMKID_LEN; i++) + brcmf_dbg(CONN, "%02x\n", pmkid.pmkid[0].PMKID[i]); + + pmkid_len = le32_to_cpu(cfg->pmk_list->pmkids.npmkid); + for (i = 0; i < pmkid_len; i++) + if (!memcmp + (pmksa->bssid, &cfg->pmk_list->pmkids.pmkid[i].BSSID, + ETH_ALEN)) + break; + + if ((pmkid_len > 0) + && (i < pmkid_len)) { + memset(&cfg->pmk_list->pmkids.pmkid[i], 0, + sizeof(struct pmkid)); + for (; i < (pmkid_len - 1); i++) { + memcpy(&cfg->pmk_list->pmkids.pmkid[i].BSSID, + &cfg->pmk_list->pmkids.pmkid[i + 1].BSSID, + ETH_ALEN); + memcpy(&cfg->pmk_list->pmkids.pmkid[i].PMKID, + &cfg->pmk_list->pmkids.pmkid[i + 1].PMKID, + WLAN_PMKID_LEN); + } + cfg->pmk_list->pmkids.npmkid = cpu_to_le32(pmkid_len - 1); + } else + err = -EINVAL; + + err = brcmf_update_pmklist(ndev, cfg->pmk_list, err); + + brcmf_dbg(TRACE, "Exit\n"); + return err; + +} + +static s32 +brcmf_cfg80211_flush_pmksa(struct wiphy *wiphy, struct net_device *ndev) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct brcmf_if *ifp = netdev_priv(ndev); + s32 err = 0; + + brcmf_dbg(TRACE, "Enter\n"); + if (!check_vif_up(ifp->vif)) + return -EIO; + + memset(cfg->pmk_list, 0, sizeof(*cfg->pmk_list)); + err = brcmf_update_pmklist(ndev, cfg->pmk_list, err); + + brcmf_dbg(TRACE, "Exit\n"); + return err; + +} + +/* + * PFN result doesn't have all the info which are + * required by the supplicant + * (For e.g IEs) Do a target Escan so that sched scan results are reported + * via wl_inform_single_bss in the required format. Escan does require the + * scan request in the form of cfg80211_scan_request. For timebeing, create + * cfg80211_scan_request one out of the received PNO event. + */ +static s32 +brcmf_notify_sched_scan_results(struct brcmf_if *ifp, + const struct brcmf_event_msg *e, void *data) +{ + struct brcmf_cfg80211_info *cfg = ifp->drvr->config; + struct brcmf_pno_net_info_le *netinfo, *netinfo_start; + struct cfg80211_scan_request *request = NULL; + struct cfg80211_ssid *ssid = NULL; + struct ieee80211_channel *channel = NULL; + struct wiphy *wiphy = cfg_to_wiphy(cfg); + int err = 0; + int channel_req = 0; + int band = 0; + struct brcmf_pno_scanresults_le *pfn_result; + u32 result_count; + u32 status; + + brcmf_dbg(SCAN, "Enter\n"); + + if (e->event_code == BRCMF_E_PFN_NET_LOST) { + brcmf_dbg(SCAN, "PFN NET LOST event. Do Nothing\n"); + return 0; + } + + pfn_result = (struct brcmf_pno_scanresults_le *)data; + result_count = le32_to_cpu(pfn_result->count); + status = le32_to_cpu(pfn_result->status); + + /* + * PFN event is limited to fit 512 bytes so we may get + * multiple NET_FOUND events. For now place a warning here. + */ + WARN_ON(status != BRCMF_PNO_SCAN_COMPLETE); + brcmf_dbg(SCAN, "PFN NET FOUND event. count: %d\n", result_count); + if (result_count > 0) { + int i; + + request = kzalloc(sizeof(*request), GFP_KERNEL); + ssid = kcalloc(result_count, sizeof(*ssid), GFP_KERNEL); + channel = kcalloc(result_count, sizeof(*channel), GFP_KERNEL); + if (!request || !ssid || !channel) { + err = -ENOMEM; + goto out_err; + } + + request->wiphy = wiphy; + data += sizeof(struct brcmf_pno_scanresults_le); + netinfo_start = (struct brcmf_pno_net_info_le *)data; + + for (i = 0; i < result_count; i++) { + netinfo = &netinfo_start[i]; + if (!netinfo) { + brcmf_err("Invalid netinfo ptr. index: %d\n", + i); + err = -EINVAL; + goto out_err; + } + + brcmf_dbg(SCAN, "SSID:%s Channel:%d\n", + netinfo->SSID, netinfo->channel); + memcpy(ssid[i].ssid, netinfo->SSID, netinfo->SSID_len); + ssid[i].ssid_len = netinfo->SSID_len; + request->n_ssids++; + + channel_req = netinfo->channel; + if (channel_req <= CH_MAX_2G_CHANNEL) + band = NL80211_BAND_2GHZ; + else + band = NL80211_BAND_5GHZ; + channel[i].center_freq = + ieee80211_channel_to_frequency(channel_req, + band); + channel[i].band = band; + channel[i].flags |= IEEE80211_CHAN_NO_HT40; + request->channels[i] = &channel[i]; + request->n_channels++; + } + + /* assign parsed ssid array */ + if (request->n_ssids) + request->ssids = &ssid[0]; + + if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) { + /* Abort any on-going scan */ + brcmf_abort_scanning(cfg); + } + + set_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status); + cfg->escan_info.run = brcmf_run_escan; + err = brcmf_do_escan(cfg, wiphy, ifp, request); + if (err) { + clear_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status); + goto out_err; + } + cfg->sched_escan = true; + cfg->scan_request = request; + } else { + brcmf_err("FALSE PNO Event. (pfn_count == 0)\n"); + goto out_err; + } + + kfree(ssid); + kfree(channel); + kfree(request); + return 0; + +out_err: + kfree(ssid); + kfree(channel); + kfree(request); + cfg80211_sched_scan_stopped(wiphy); + return err; +} + +static int brcmf_dev_pno_clean(struct net_device *ndev) +{ + int ret; + + /* Disable pfn */ + ret = brcmf_fil_iovar_int_set(netdev_priv(ndev), "pfn", 0); + if (ret == 0) { + /* clear pfn */ + ret = brcmf_fil_iovar_data_set(netdev_priv(ndev), "pfnclear", + NULL, 0); + } + if (ret < 0) + brcmf_err("failed code %d\n", ret); + + return ret; +} + +static int brcmf_dev_pno_config(struct net_device *ndev) +{ + struct brcmf_pno_param_le pfn_param; + + memset(&pfn_param, 0, sizeof(pfn_param)); + pfn_param.version = cpu_to_le32(BRCMF_PNO_VERSION); + + /* set extra pno params */ + pfn_param.flags = cpu_to_le16(1 << BRCMF_PNO_ENABLE_ADAPTSCAN_BIT); + pfn_param.repeat = BRCMF_PNO_REPEAT; + pfn_param.exp = BRCMF_PNO_FREQ_EXPO_MAX; + + /* set up pno scan fr */ + pfn_param.scan_freq = cpu_to_le32(BRCMF_PNO_TIME); + + return brcmf_fil_iovar_data_set(netdev_priv(ndev), "pfn_set", + &pfn_param, sizeof(pfn_param)); +} + +static int +brcmf_cfg80211_sched_scan_start(struct wiphy *wiphy, + struct net_device *ndev, + struct cfg80211_sched_scan_request *request) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy); + struct brcmf_pno_net_param_le pfn; + int i; + int ret = 0; + + brcmf_dbg(SCAN, "Enter n_match_sets:%d n_ssids:%d\n", + request->n_match_sets, request->n_ssids); + if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) { + brcmf_err("Scanning already: status (%lu)\n", cfg->scan_status); + return -EAGAIN; + } + if (test_bit(BRCMF_SCAN_STATUS_SUPPRESS, &cfg->scan_status)) { + brcmf_err("Scanning suppressed: status (%lu)\n", + cfg->scan_status); + return -EAGAIN; + } + + if (!request->n_ssids || !request->n_match_sets) { + brcmf_dbg(SCAN, "Invalid sched scan req!! n_ssids:%d\n", + request->n_ssids); + return -EINVAL; + } + + if (request->n_ssids > 0) { + for (i = 0; i < request->n_ssids; i++) { + /* Active scan req for ssids */ + brcmf_dbg(SCAN, ">>> Active scan req for ssid (%s)\n", + request->ssids[i].ssid); + + /* + * match_set ssids is a supert set of n_ssid list, + * so we need not add these set seperately. + */ + } + } + + if (request->n_match_sets > 0) { + /* clean up everything */ + ret = brcmf_dev_pno_clean(ndev); + if (ret < 0) { + brcmf_err("failed error=%d\n", ret); + return ret; + } + + /* configure pno */ + ret = brcmf_dev_pno_config(ndev); + if (ret < 0) { + brcmf_err("PNO setup failed!! ret=%d\n", ret); + return -EINVAL; + } + + /* configure each match set */ + for (i = 0; i < request->n_match_sets; i++) { + struct cfg80211_ssid *ssid; + u32 ssid_len; + + ssid = &request->match_sets[i].ssid; + ssid_len = ssid->ssid_len; + + if (!ssid_len) { + brcmf_err("skip broadcast ssid\n"); + continue; + } + pfn.auth = cpu_to_le32(WLAN_AUTH_OPEN); + pfn.wpa_auth = cpu_to_le32(BRCMF_PNO_WPA_AUTH_ANY); + pfn.wsec = cpu_to_le32(0); + pfn.infra = cpu_to_le32(1); + pfn.flags = cpu_to_le32(1 << BRCMF_PNO_HIDDEN_BIT); + pfn.ssid.SSID_len = cpu_to_le32(ssid_len); + memcpy(pfn.ssid.SSID, ssid->ssid, ssid_len); + ret = brcmf_fil_iovar_data_set(ifp, "pfn_add", &pfn, + sizeof(pfn)); + brcmf_dbg(SCAN, ">>> PNO filter %s for ssid (%s)\n", + ret == 0 ? "set" : "failed", ssid->ssid); + } + /* Enable the PNO */ + if (brcmf_fil_iovar_int_set(ifp, "pfn", 1) < 0) { + brcmf_err("PNO enable failed!! ret=%d\n", ret); + return -EINVAL; + } + } else { + return -EINVAL; + } + + return 0; +} + +static int brcmf_cfg80211_sched_scan_stop(struct wiphy *wiphy, + struct net_device *ndev) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + + brcmf_dbg(SCAN, "enter\n"); + brcmf_dev_pno_clean(ndev); + if (cfg->sched_escan) + brcmf_notify_escan_complete(cfg, netdev_priv(ndev), true, true); + return 0; +} + +#ifdef CONFIG_NL80211_TESTMODE +static int brcmf_cfg80211_testmode(struct wiphy *wiphy, + struct wireless_dev *wdev, + void *data, int len) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct net_device *ndev = cfg_to_ndev(cfg); + struct brcmf_dcmd *dcmd = data; + struct sk_buff *reply; + int ret; + + brcmf_dbg(TRACE, "cmd %x set %d buf %p len %d\n", dcmd->cmd, dcmd->set, + dcmd->buf, dcmd->len); + + if (dcmd->set) + ret = brcmf_fil_cmd_data_set(netdev_priv(ndev), dcmd->cmd, + dcmd->buf, dcmd->len); + else + ret = brcmf_fil_cmd_data_get(netdev_priv(ndev), dcmd->cmd, + dcmd->buf, dcmd->len); + if (ret == 0) { + reply = cfg80211_testmode_alloc_reply_skb(wiphy, sizeof(*dcmd)); + nla_put(reply, NL80211_ATTR_TESTDATA, sizeof(*dcmd), dcmd); + ret = cfg80211_testmode_reply(reply); + } + return ret; +} +#endif + +static s32 brcmf_configure_opensecurity(struct brcmf_if *ifp) +{ + s32 err; + + /* set auth */ + err = brcmf_fil_bsscfg_int_set(ifp, "auth", 0); + if (err < 0) { + brcmf_err("auth error %d\n", err); + return err; + } + /* set wsec */ + err = brcmf_fil_bsscfg_int_set(ifp, "wsec", 0); + if (err < 0) { + brcmf_err("wsec error %d\n", err); + return err; + } + /* set upper-layer auth */ + err = brcmf_fil_bsscfg_int_set(ifp, "wpa_auth", WPA_AUTH_NONE); + if (err < 0) { + brcmf_err("wpa_auth error %d\n", err); + return err; + } + + return 0; +} + +static bool brcmf_valid_wpa_oui(u8 *oui, bool is_rsn_ie) +{ + if (is_rsn_ie) + return (memcmp(oui, RSN_OUI, TLV_OUI_LEN) == 0); + + return (memcmp(oui, WPA_OUI, TLV_OUI_LEN) == 0); +} + +static s32 +brcmf_configure_wpaie(struct net_device *ndev, + const struct brcmf_vs_tlv *wpa_ie, + bool is_rsn_ie) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + u32 auth = 0; /* d11 open authentication */ + u16 count; + s32 err = 0; + s32 len = 0; + u32 i; + u32 wsec; + u32 pval = 0; + u32 gval = 0; + u32 wpa_auth = 0; + u32 offset; + u8 *data; + u16 rsn_cap; + u32 wme_bss_disable; + + brcmf_dbg(TRACE, "Enter\n"); + if (wpa_ie == NULL) + goto exit; + + len = wpa_ie->len + TLV_HDR_LEN; + data = (u8 *)wpa_ie; + offset = TLV_HDR_LEN; + if (!is_rsn_ie) + offset += VS_IE_FIXED_HDR_LEN; + else + offset += WPA_IE_VERSION_LEN; + + /* check for multicast cipher suite */ + if (offset + WPA_IE_MIN_OUI_LEN > len) { + err = -EINVAL; + brcmf_err("no multicast cipher suite\n"); + goto exit; + } + + if (!brcmf_valid_wpa_oui(&data[offset], is_rsn_ie)) { + err = -EINVAL; + brcmf_err("ivalid OUI\n"); + goto exit; + } + offset += TLV_OUI_LEN; + + /* pick up multicast cipher */ + switch (data[offset]) { + case WPA_CIPHER_NONE: + gval = 0; + break; + case WPA_CIPHER_WEP_40: + case WPA_CIPHER_WEP_104: + gval = WEP_ENABLED; + break; + case WPA_CIPHER_TKIP: + gval = TKIP_ENABLED; + break; + case WPA_CIPHER_AES_CCM: + gval = AES_ENABLED; + break; + default: + err = -EINVAL; + brcmf_err("Invalid multi cast cipher info\n"); + goto exit; + } + + offset++; + /* walk thru unicast cipher list and pick up what we recognize */ + count = data[offset] + (data[offset + 1] << 8); + offset += WPA_IE_SUITE_COUNT_LEN; + /* Check for unicast suite(s) */ + if (offset + (WPA_IE_MIN_OUI_LEN * count) > len) { + err = -EINVAL; + brcmf_err("no unicast cipher suite\n"); + goto exit; + } + for (i = 0; i < count; i++) { + if (!brcmf_valid_wpa_oui(&data[offset], is_rsn_ie)) { + err = -EINVAL; + brcmf_err("ivalid OUI\n"); + goto exit; + } + offset += TLV_OUI_LEN; + switch (data[offset]) { + case WPA_CIPHER_NONE: + break; + case WPA_CIPHER_WEP_40: + case WPA_CIPHER_WEP_104: + pval |= WEP_ENABLED; + break; + case WPA_CIPHER_TKIP: + pval |= TKIP_ENABLED; + break; + case WPA_CIPHER_AES_CCM: + pval |= AES_ENABLED; + break; + default: + brcmf_err("Ivalid unicast security info\n"); + } + offset++; + } + /* walk thru auth management suite list and pick up what we recognize */ + count = data[offset] + (data[offset + 1] << 8); + offset += WPA_IE_SUITE_COUNT_LEN; + /* Check for auth key management suite(s) */ + if (offset + (WPA_IE_MIN_OUI_LEN * count) > len) { + err = -EINVAL; + brcmf_err("no auth key mgmt suite\n"); + goto exit; + } + for (i = 0; i < count; i++) { + if (!brcmf_valid_wpa_oui(&data[offset], is_rsn_ie)) { + err = -EINVAL; + brcmf_err("ivalid OUI\n"); + goto exit; + } + offset += TLV_OUI_LEN; + switch (data[offset]) { + case RSN_AKM_NONE: + brcmf_dbg(TRACE, "RSN_AKM_NONE\n"); + wpa_auth |= WPA_AUTH_NONE; + break; + case RSN_AKM_UNSPECIFIED: + brcmf_dbg(TRACE, "RSN_AKM_UNSPECIFIED\n"); + is_rsn_ie ? (wpa_auth |= WPA2_AUTH_UNSPECIFIED) : + (wpa_auth |= WPA_AUTH_UNSPECIFIED); + break; + case RSN_AKM_PSK: + brcmf_dbg(TRACE, "RSN_AKM_PSK\n"); + is_rsn_ie ? (wpa_auth |= WPA2_AUTH_PSK) : + (wpa_auth |= WPA_AUTH_PSK); + break; + default: + brcmf_err("Ivalid key mgmt info\n"); + } + offset++; + } + + if (is_rsn_ie) { + wme_bss_disable = 1; + if ((offset + RSN_CAP_LEN) <= len) { + rsn_cap = data[offset] + (data[offset + 1] << 8); + if (rsn_cap & RSN_CAP_PTK_REPLAY_CNTR_MASK) + wme_bss_disable = 0; + } + /* set wme_bss_disable to sync RSN Capabilities */ + err = brcmf_fil_bsscfg_int_set(ifp, "wme_bss_disable", + wme_bss_disable); + if (err < 0) { + brcmf_err("wme_bss_disable error %d\n", err); + goto exit; + } + } + /* FOR WPS , set SES_OW_ENABLED */ + wsec = (pval | gval | SES_OW_ENABLED); + + /* set auth */ + err = brcmf_fil_bsscfg_int_set(ifp, "auth", auth); + if (err < 0) { + brcmf_err("auth error %d\n", err); + goto exit; + } + /* set wsec */ + err = brcmf_fil_bsscfg_int_set(ifp, "wsec", wsec); + if (err < 0) { + brcmf_err("wsec error %d\n", err); + goto exit; + } + /* set upper-layer auth */ + err = brcmf_fil_bsscfg_int_set(ifp, "wpa_auth", wpa_auth); + if (err < 0) { + brcmf_err("wpa_auth error %d\n", err); + goto exit; + } + +exit: + return err; +} + +static s32 +brcmf_parse_vndr_ies(const u8 *vndr_ie_buf, u32 vndr_ie_len, + struct parsed_vndr_ies *vndr_ies) +{ + s32 err = 0; + struct brcmf_vs_tlv *vndrie; + struct brcmf_tlv *ie; + struct parsed_vndr_ie_info *parsed_info; + s32 remaining_len; + + remaining_len = (s32)vndr_ie_len; + memset(vndr_ies, 0, sizeof(*vndr_ies)); + + ie = (struct brcmf_tlv *)vndr_ie_buf; + while (ie) { + if (ie->id != WLAN_EID_VENDOR_SPECIFIC) + goto next; + vndrie = (struct brcmf_vs_tlv *)ie; + /* len should be bigger than OUI length + one */ + if (vndrie->len < (VS_IE_FIXED_HDR_LEN - TLV_HDR_LEN + 1)) { + brcmf_err("invalid vndr ie. length is too small %d\n", + vndrie->len); + goto next; + } + /* if wpa or wme ie, do not add ie */ + if (!memcmp(vndrie->oui, (u8 *)WPA_OUI, TLV_OUI_LEN) && + ((vndrie->oui_type == WPA_OUI_TYPE) || + (vndrie->oui_type == WME_OUI_TYPE))) { + brcmf_dbg(TRACE, "Found WPA/WME oui. Do not add it\n"); + goto next; + } + + parsed_info = &vndr_ies->ie_info[vndr_ies->count]; + + /* save vndr ie information */ + parsed_info->ie_ptr = (char *)vndrie; + parsed_info->ie_len = vndrie->len + TLV_HDR_LEN; + memcpy(&parsed_info->vndrie, vndrie, sizeof(*vndrie)); + + vndr_ies->count++; + + brcmf_dbg(TRACE, "** OUI %02x %02x %02x, type 0x%02x\n", + parsed_info->vndrie.oui[0], + parsed_info->vndrie.oui[1], + parsed_info->vndrie.oui[2], + parsed_info->vndrie.oui_type); + + if (vndr_ies->count >= VNDR_IE_PARSE_LIMIT) + break; +next: + remaining_len -= (ie->len + TLV_HDR_LEN); + if (remaining_len <= TLV_HDR_LEN) + ie = NULL; + else + ie = (struct brcmf_tlv *)(((u8 *)ie) + ie->len + + TLV_HDR_LEN); + } + return err; +} + +static u32 +brcmf_vndr_ie(u8 *iebuf, s32 pktflag, u8 *ie_ptr, u32 ie_len, s8 *add_del_cmd) +{ + + __le32 iecount_le; + __le32 pktflag_le; + + strncpy(iebuf, add_del_cmd, VNDR_IE_CMD_LEN - 1); + iebuf[VNDR_IE_CMD_LEN - 1] = '\0'; + + iecount_le = cpu_to_le32(1); + memcpy(&iebuf[VNDR_IE_COUNT_OFFSET], &iecount_le, sizeof(iecount_le)); + + pktflag_le = cpu_to_le32(pktflag); + memcpy(&iebuf[VNDR_IE_PKTFLAG_OFFSET], &pktflag_le, sizeof(pktflag_le)); + + memcpy(&iebuf[VNDR_IE_VSIE_OFFSET], ie_ptr, ie_len); + + return ie_len + VNDR_IE_HDR_SIZE; +} + +s32 brcmf_vif_set_mgmt_ie(struct brcmf_cfg80211_vif *vif, s32 pktflag, + const u8 *vndr_ie_buf, u32 vndr_ie_len) +{ + struct brcmf_if *ifp; + struct vif_saved_ie *saved_ie; + s32 err = 0; + u8 *iovar_ie_buf; + u8 *curr_ie_buf; + u8 *mgmt_ie_buf = NULL; + int mgmt_ie_buf_len; + u32 *mgmt_ie_len; + u32 del_add_ie_buf_len = 0; + u32 total_ie_buf_len = 0; + u32 parsed_ie_buf_len = 0; + struct parsed_vndr_ies old_vndr_ies; + struct parsed_vndr_ies new_vndr_ies; + struct parsed_vndr_ie_info *vndrie_info; + s32 i; + u8 *ptr; + int remained_buf_len; + + if (!vif) + return -ENODEV; + ifp = vif->ifp; + saved_ie = &vif->saved_ie; + + brcmf_dbg(TRACE, "bssidx %d, pktflag : 0x%02X\n", ifp->bssidx, pktflag); + iovar_ie_buf = kzalloc(WL_EXTRA_BUF_MAX, GFP_KERNEL); + if (!iovar_ie_buf) + return -ENOMEM; + curr_ie_buf = iovar_ie_buf; + switch (pktflag) { + case BRCMF_VNDR_IE_PRBREQ_FLAG: + mgmt_ie_buf = saved_ie->probe_req_ie; + mgmt_ie_len = &saved_ie->probe_req_ie_len; + mgmt_ie_buf_len = sizeof(saved_ie->probe_req_ie); + break; + case BRCMF_VNDR_IE_PRBRSP_FLAG: + mgmt_ie_buf = saved_ie->probe_res_ie; + mgmt_ie_len = &saved_ie->probe_res_ie_len; + mgmt_ie_buf_len = sizeof(saved_ie->probe_res_ie); + break; + case BRCMF_VNDR_IE_BEACON_FLAG: + mgmt_ie_buf = saved_ie->beacon_ie; + mgmt_ie_len = &saved_ie->beacon_ie_len; + mgmt_ie_buf_len = sizeof(saved_ie->beacon_ie); + break; + case BRCMF_VNDR_IE_ASSOCREQ_FLAG: + mgmt_ie_buf = saved_ie->assoc_req_ie; + mgmt_ie_len = &saved_ie->assoc_req_ie_len; + mgmt_ie_buf_len = sizeof(saved_ie->assoc_req_ie); + break; + default: + err = -EPERM; + brcmf_err("not suitable type\n"); + goto exit; + } + + if (vndr_ie_len > mgmt_ie_buf_len) { + err = -ENOMEM; + brcmf_err("extra IE size too big\n"); + goto exit; + } + + /* parse and save new vndr_ie in curr_ie_buff before comparing it */ + if (vndr_ie_buf && vndr_ie_len && curr_ie_buf) { + ptr = curr_ie_buf; + brcmf_parse_vndr_ies(vndr_ie_buf, vndr_ie_len, &new_vndr_ies); + for (i = 0; i < new_vndr_ies.count; i++) { + vndrie_info = &new_vndr_ies.ie_info[i]; + memcpy(ptr + parsed_ie_buf_len, vndrie_info->ie_ptr, + vndrie_info->ie_len); + parsed_ie_buf_len += vndrie_info->ie_len; + } + } + + if (mgmt_ie_buf && *mgmt_ie_len) { + if (parsed_ie_buf_len && (parsed_ie_buf_len == *mgmt_ie_len) && + (memcmp(mgmt_ie_buf, curr_ie_buf, + parsed_ie_buf_len) == 0)) { + brcmf_dbg(TRACE, "Previous mgmt IE equals to current IE\n"); + goto exit; + } + + /* parse old vndr_ie */ + brcmf_parse_vndr_ies(mgmt_ie_buf, *mgmt_ie_len, &old_vndr_ies); + + /* make a command to delete old ie */ + for (i = 0; i < old_vndr_ies.count; i++) { + vndrie_info = &old_vndr_ies.ie_info[i]; + + brcmf_dbg(TRACE, "DEL ID : %d, Len: %d , OUI:%02x:%02x:%02x\n", + vndrie_info->vndrie.id, + vndrie_info->vndrie.len, + vndrie_info->vndrie.oui[0], + vndrie_info->vndrie.oui[1], + vndrie_info->vndrie.oui[2]); + + del_add_ie_buf_len = brcmf_vndr_ie(curr_ie_buf, pktflag, + vndrie_info->ie_ptr, + vndrie_info->ie_len, + "del"); + curr_ie_buf += del_add_ie_buf_len; + total_ie_buf_len += del_add_ie_buf_len; + } + } + + *mgmt_ie_len = 0; + /* Add if there is any extra IE */ + if (mgmt_ie_buf && parsed_ie_buf_len) { + ptr = mgmt_ie_buf; + + remained_buf_len = mgmt_ie_buf_len; + + /* make a command to add new ie */ + for (i = 0; i < new_vndr_ies.count; i++) { + vndrie_info = &new_vndr_ies.ie_info[i]; + + /* verify remained buf size before copy data */ + if (remained_buf_len < (vndrie_info->vndrie.len + + VNDR_IE_VSIE_OFFSET)) { + brcmf_err("no space in mgmt_ie_buf: len left %d", + remained_buf_len); + break; + } + remained_buf_len -= (vndrie_info->ie_len + + VNDR_IE_VSIE_OFFSET); + + brcmf_dbg(TRACE, "ADDED ID : %d, Len: %d, OUI:%02x:%02x:%02x\n", + vndrie_info->vndrie.id, + vndrie_info->vndrie.len, + vndrie_info->vndrie.oui[0], + vndrie_info->vndrie.oui[1], + vndrie_info->vndrie.oui[2]); + + del_add_ie_buf_len = brcmf_vndr_ie(curr_ie_buf, pktflag, + vndrie_info->ie_ptr, + vndrie_info->ie_len, + "add"); + + /* save the parsed IE in wl struct */ + memcpy(ptr + (*mgmt_ie_len), vndrie_info->ie_ptr, + vndrie_info->ie_len); + *mgmt_ie_len += vndrie_info->ie_len; + + curr_ie_buf += del_add_ie_buf_len; + total_ie_buf_len += del_add_ie_buf_len; + } + } + if (total_ie_buf_len) { + err = brcmf_fil_bsscfg_data_set(ifp, "vndr_ie", iovar_ie_buf, + total_ie_buf_len); + if (err) + brcmf_err("vndr ie set error : %d\n", err); + } + +exit: + kfree(iovar_ie_buf); + return err; +} + +s32 brcmf_vif_clear_mgmt_ies(struct brcmf_cfg80211_vif *vif) +{ + s32 pktflags[] = { + BRCMF_VNDR_IE_PRBREQ_FLAG, + BRCMF_VNDR_IE_PRBRSP_FLAG, + BRCMF_VNDR_IE_BEACON_FLAG + }; + int i; + + for (i = 0; i < ARRAY_SIZE(pktflags); i++) + brcmf_vif_set_mgmt_ie(vif, pktflags[i], NULL, 0); + + memset(&vif->saved_ie, 0, sizeof(vif->saved_ie)); + return 0; +} + +static s32 +brcmf_config_ap_mgmt_ie(struct brcmf_cfg80211_vif *vif, + struct cfg80211_beacon_data *beacon) +{ + s32 err; + + /* Set Beacon IEs to FW */ + err = brcmf_vif_set_mgmt_ie(vif, BRCMF_VNDR_IE_BEACON_FLAG, + beacon->tail, beacon->tail_len); + if (err) { + brcmf_err("Set Beacon IE Failed\n"); + return err; + } + brcmf_dbg(TRACE, "Applied Vndr IEs for Beacon\n"); + + /* Set Probe Response IEs to FW */ + err = brcmf_vif_set_mgmt_ie(vif, BRCMF_VNDR_IE_PRBRSP_FLAG, + beacon->proberesp_ies, + beacon->proberesp_ies_len); + if (err) + brcmf_err("Set Probe Resp IE Failed\n"); + else + brcmf_dbg(TRACE, "Applied Vndr IEs for Probe Resp\n"); + + return err; +} + +static s32 +brcmf_cfg80211_start_ap(struct wiphy *wiphy, struct net_device *ndev, + struct cfg80211_ap_settings *settings) +{ + s32 ie_offset; + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct brcmf_if *ifp = netdev_priv(ndev); + const struct brcmf_tlv *ssid_ie; + struct brcmf_ssid_le ssid_le; + s32 err = -EPERM; + const struct brcmf_tlv *rsn_ie; + const struct brcmf_vs_tlv *wpa_ie; + struct brcmf_join_params join_params; + enum nl80211_iftype dev_role; + struct brcmf_fil_bss_enable_le bss_enable; + u16 chanspec; + + brcmf_dbg(TRACE, "ctrlchn=%d, center=%d, bw=%d, beacon_interval=%d, dtim_period=%d,\n", + settings->chandef.chan->hw_value, + settings->chandef.center_freq1, settings->chandef.width, + settings->beacon_interval, settings->dtim_period); + brcmf_dbg(TRACE, "ssid=%s(%zu), auth_type=%d, inactivity_timeout=%d\n", + settings->ssid, settings->ssid_len, settings->auth_type, + settings->inactivity_timeout); + + dev_role = ifp->vif->wdev.iftype; + + memset(&ssid_le, 0, sizeof(ssid_le)); + if (settings->ssid == NULL || settings->ssid_len == 0) { + ie_offset = DOT11_MGMT_HDR_LEN + DOT11_BCN_PRB_FIXED_LEN; + ssid_ie = brcmf_parse_tlvs( + (u8 *)&settings->beacon.head[ie_offset], + settings->beacon.head_len - ie_offset, + WLAN_EID_SSID); + if (!ssid_ie) + return -EINVAL; + + memcpy(ssid_le.SSID, ssid_ie->data, ssid_ie->len); + ssid_le.SSID_len = cpu_to_le32(ssid_ie->len); + brcmf_dbg(TRACE, "SSID is (%s) in Head\n", ssid_le.SSID); + } else { + memcpy(ssid_le.SSID, settings->ssid, settings->ssid_len); + ssid_le.SSID_len = cpu_to_le32((u32)settings->ssid_len); + } + + brcmf_set_mpc(ifp, 0); + brcmf_configure_arp_offload(ifp, false); + + /* find the RSN_IE */ + rsn_ie = brcmf_parse_tlvs((u8 *)settings->beacon.tail, + settings->beacon.tail_len, WLAN_EID_RSN); + + /* find the WPA_IE */ + wpa_ie = brcmf_find_wpaie((u8 *)settings->beacon.tail, + settings->beacon.tail_len); + + if ((wpa_ie != NULL || rsn_ie != NULL)) { + brcmf_dbg(TRACE, "WPA(2) IE is found\n"); + if (wpa_ie != NULL) { + /* WPA IE */ + err = brcmf_configure_wpaie(ndev, wpa_ie, false); + if (err < 0) + goto exit; + } else { + /* RSN IE */ + err = brcmf_configure_wpaie(ndev, + (struct brcmf_vs_tlv *)rsn_ie, true); + if (err < 0) + goto exit; + } + } else { + brcmf_dbg(TRACE, "No WPA(2) IEs found\n"); + brcmf_configure_opensecurity(ifp); + } + + brcmf_config_ap_mgmt_ie(ifp->vif, &settings->beacon); + + chanspec = chandef_to_chanspec(&cfg->d11inf, &settings->chandef); + err = brcmf_fil_iovar_int_set(ifp, "chanspec", chanspec); + if (err < 0) { + brcmf_err("Set Channel failed: chspec=%d, %d\n", chanspec, err); + goto exit; + } + + if (settings->beacon_interval) { + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_BCNPRD, + settings->beacon_interval); + if (err < 0) { + brcmf_err("Beacon Interval Set Error, %d\n", err); + goto exit; + } + } + if (settings->dtim_period) { + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_DTIMPRD, + settings->dtim_period); + if (err < 0) { + brcmf_err("DTIM Interval Set Error, %d\n", err); + goto exit; + } + } + + if (dev_role == NL80211_IFTYPE_AP) { + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_DOWN, 1); + if (err < 0) { + brcmf_err("BRCMF_C_DOWN error %d\n", err); + goto exit; + } + brcmf_fil_iovar_int_set(ifp, "apsta", 0); + } + + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_INFRA, 1); + if (err < 0) { + brcmf_err("SET INFRA error %d\n", err); + goto exit; + } + if (dev_role == NL80211_IFTYPE_AP) { + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_AP, 1); + if (err < 0) { + brcmf_err("setting AP mode failed %d\n", err); + goto exit; + } + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 1); + if (err < 0) { + brcmf_err("BRCMF_C_UP error (%d)\n", err); + goto exit; + } + + memset(&join_params, 0, sizeof(join_params)); + /* join parameters starts with ssid */ + memcpy(&join_params.ssid_le, &ssid_le, sizeof(ssid_le)); + /* create softap */ + err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SET_SSID, + &join_params, sizeof(join_params)); + if (err < 0) { + brcmf_err("SET SSID error (%d)\n", err); + goto exit; + } + brcmf_dbg(TRACE, "AP mode configuration complete\n"); + } else { + err = brcmf_fil_bsscfg_data_set(ifp, "ssid", &ssid_le, + sizeof(ssid_le)); + if (err < 0) { + brcmf_err("setting ssid failed %d\n", err); + goto exit; + } + bss_enable.bsscfg_idx = cpu_to_le32(ifp->bssidx); + bss_enable.enable = cpu_to_le32(1); + err = brcmf_fil_iovar_data_set(ifp, "bss", &bss_enable, + sizeof(bss_enable)); + if (err < 0) { + brcmf_err("bss_enable config failed %d\n", err); + goto exit; + } + + brcmf_dbg(TRACE, "GO mode configuration complete\n"); + } + clear_bit(BRCMF_VIF_STATUS_AP_CREATING, &ifp->vif->sme_state); + set_bit(BRCMF_VIF_STATUS_AP_CREATED, &ifp->vif->sme_state); + +exit: + if (err) { + brcmf_set_mpc(ifp, 1); + brcmf_configure_arp_offload(ifp, true); + } + return err; +} + +static int brcmf_cfg80211_stop_ap(struct wiphy *wiphy, struct net_device *ndev) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + s32 err; + struct brcmf_fil_bss_enable_le bss_enable; + struct brcmf_join_params join_params; + + brcmf_dbg(TRACE, "Enter\n"); + + if (ifp->vif->wdev.iftype == NL80211_IFTYPE_AP) { + /* Due to most likely deauths outstanding we sleep */ + /* first to make sure they get processed by fw. */ + msleep(400); + + memset(&join_params, 0, sizeof(join_params)); + err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SET_SSID, + &join_params, sizeof(join_params)); + if (err < 0) + brcmf_err("SET SSID error (%d)\n", err); + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 0); + if (err < 0) + brcmf_err("BRCMF_C_UP error %d\n", err); + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_AP, 0); + if (err < 0) + brcmf_err("setting AP mode failed %d\n", err); + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_INFRA, 0); + if (err < 0) + brcmf_err("setting INFRA mode failed %d\n", err); + } else { + bss_enable.bsscfg_idx = cpu_to_le32(ifp->bssidx); + bss_enable.enable = cpu_to_le32(0); + err = brcmf_fil_iovar_data_set(ifp, "bss", &bss_enable, + sizeof(bss_enable)); + if (err < 0) + brcmf_err("bss_enable config failed %d\n", err); + } + brcmf_set_mpc(ifp, 1); + brcmf_configure_arp_offload(ifp, true); + set_bit(BRCMF_VIF_STATUS_AP_CREATING, &ifp->vif->sme_state); + clear_bit(BRCMF_VIF_STATUS_AP_CREATED, &ifp->vif->sme_state); + + return err; +} + +static s32 +brcmf_cfg80211_change_beacon(struct wiphy *wiphy, struct net_device *ndev, + struct cfg80211_beacon_data *info) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + s32 err; + + brcmf_dbg(TRACE, "Enter\n"); + + err = brcmf_config_ap_mgmt_ie(ifp->vif, info); + + return err; +} + +static int +brcmf_cfg80211_del_station(struct wiphy *wiphy, struct net_device *ndev, + const u8 *mac) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct brcmf_scb_val_le scbval; + struct brcmf_if *ifp = netdev_priv(ndev); + s32 err; + + if (!mac) + return -EFAULT; + + brcmf_dbg(TRACE, "Enter %pM\n", mac); + + if (ifp->vif == cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif) + ifp = cfg->p2p.bss_idx[P2PAPI_BSSCFG_PRIMARY].vif->ifp; + if (!check_vif_up(ifp->vif)) + return -EIO; + + memcpy(&scbval.ea, mac, ETH_ALEN); + scbval.val = cpu_to_le32(WLAN_REASON_DEAUTH_LEAVING); + err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SCB_DEAUTHENTICATE_FOR_REASON, + &scbval, sizeof(scbval)); + if (err) + brcmf_err("SCB_DEAUTHENTICATE_FOR_REASON failed %d\n", err); + + brcmf_dbg(TRACE, "Exit\n"); + return err; +} + + +static void +brcmf_cfg80211_mgmt_frame_register(struct wiphy *wiphy, + struct wireless_dev *wdev, + u16 frame_type, bool reg) +{ + struct brcmf_cfg80211_vif *vif; + u16 mgmt_type; + + brcmf_dbg(TRACE, "Enter, frame_type %04x, reg=%d\n", frame_type, reg); + + mgmt_type = (frame_type & IEEE80211_FCTL_STYPE) >> 4; + vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev); + if (reg) + vif->mgmt_rx_reg |= BIT(mgmt_type); + else + vif->mgmt_rx_reg &= ~BIT(mgmt_type); +} + + +static int +brcmf_cfg80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev, + struct cfg80211_mgmt_tx_params *params, u64 *cookie) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct ieee80211_channel *chan = params->chan; + const u8 *buf = params->buf; + size_t len = params->len; + const struct ieee80211_mgmt *mgmt; + struct brcmf_cfg80211_vif *vif; + s32 err = 0; + s32 ie_offset; + s32 ie_len; + struct brcmf_fil_action_frame_le *action_frame; + struct brcmf_fil_af_params_le *af_params; + bool ack; + s32 chan_nr; + u32 freq; + + brcmf_dbg(TRACE, "Enter\n"); + + *cookie = 0; + + mgmt = (const struct ieee80211_mgmt *)buf; + + if (!ieee80211_is_mgmt(mgmt->frame_control)) { + brcmf_err("Driver only allows MGMT packet type\n"); + return -EPERM; + } + + vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev); + + if (ieee80211_is_probe_resp(mgmt->frame_control)) { + /* Right now the only reason to get a probe response */ + /* is for p2p listen response or for p2p GO from */ + /* wpa_supplicant. Unfortunately the probe is send */ + /* on primary ndev, while dongle wants it on the p2p */ + /* vif. Since this is only reason for a probe */ + /* response to be sent, the vif is taken from cfg. */ + /* If ever desired to send proberesp for non p2p */ + /* response then data should be checked for */ + /* "DIRECT-". Note in future supplicant will take */ + /* dedicated p2p wdev to do this and then this 'hack'*/ + /* is not needed anymore. */ + ie_offset = DOT11_MGMT_HDR_LEN + + DOT11_BCN_PRB_FIXED_LEN; + ie_len = len - ie_offset; + if (vif == cfg->p2p.bss_idx[P2PAPI_BSSCFG_PRIMARY].vif) + vif = cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif; + err = brcmf_vif_set_mgmt_ie(vif, + BRCMF_VNDR_IE_PRBRSP_FLAG, + &buf[ie_offset], + ie_len); + cfg80211_mgmt_tx_status(wdev, *cookie, buf, len, true, + GFP_KERNEL); + } else if (ieee80211_is_action(mgmt->frame_control)) { + af_params = kzalloc(sizeof(*af_params), GFP_KERNEL); + if (af_params == NULL) { + brcmf_err("unable to allocate frame\n"); + err = -ENOMEM; + goto exit; + } + action_frame = &af_params->action_frame; + /* Add the packet Id */ + action_frame->packet_id = cpu_to_le32(*cookie); + /* Add BSSID */ + memcpy(&action_frame->da[0], &mgmt->da[0], ETH_ALEN); + memcpy(&af_params->bssid[0], &mgmt->bssid[0], ETH_ALEN); + /* Add the length exepted for 802.11 header */ + action_frame->len = cpu_to_le16(len - DOT11_MGMT_HDR_LEN); + /* Add the channel. Use the one specified as parameter if any or + * the current one (got from the firmware) otherwise + */ + if (chan) + freq = chan->center_freq; + else + brcmf_fil_cmd_int_get(vif->ifp, BRCMF_C_GET_CHANNEL, + &freq); + chan_nr = ieee80211_frequency_to_channel(freq); + af_params->channel = cpu_to_le32(chan_nr); + + memcpy(action_frame->data, &buf[DOT11_MGMT_HDR_LEN], + le16_to_cpu(action_frame->len)); + + brcmf_dbg(TRACE, "Action frame, cookie=%lld, len=%d, freq=%d\n", + *cookie, le16_to_cpu(action_frame->len), freq); + + ack = brcmf_p2p_send_action_frame(cfg, cfg_to_ndev(cfg), + af_params); + + cfg80211_mgmt_tx_status(wdev, *cookie, buf, len, ack, + GFP_KERNEL); + kfree(af_params); + } else { + brcmf_dbg(TRACE, "Unhandled, fc=%04x!!\n", mgmt->frame_control); + brcmf_dbg_hex_dump(true, buf, len, "payload, len=%Zu\n", len); + } + +exit: + return err; +} + + +static int +brcmf_cfg80211_cancel_remain_on_channel(struct wiphy *wiphy, + struct wireless_dev *wdev, + u64 cookie) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct brcmf_cfg80211_vif *vif; + int err = 0; + + brcmf_dbg(TRACE, "Enter p2p listen cancel\n"); + + vif = cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif; + if (vif == NULL) { + brcmf_err("No p2p device available for probe response\n"); + err = -ENODEV; + goto exit; + } + brcmf_p2p_cancel_remain_on_channel(vif->ifp); +exit: + return err; +} + +static int brcmf_cfg80211_crit_proto_start(struct wiphy *wiphy, + struct wireless_dev *wdev, + enum nl80211_crit_proto_id proto, + u16 duration) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct brcmf_cfg80211_vif *vif; + + vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev); + + /* only DHCP support for now */ + if (proto != NL80211_CRIT_PROTO_DHCP) + return -EINVAL; + + /* suppress and abort scanning */ + set_bit(BRCMF_SCAN_STATUS_SUPPRESS, &cfg->scan_status); + brcmf_abort_scanning(cfg); + + return brcmf_btcoex_set_mode(vif, BRCMF_BTCOEX_DISABLED, duration); +} + +static void brcmf_cfg80211_crit_proto_stop(struct wiphy *wiphy, + struct wireless_dev *wdev) +{ + struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy); + struct brcmf_cfg80211_vif *vif; + + vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev); + + brcmf_btcoex_set_mode(vif, BRCMF_BTCOEX_ENABLED, 0); + clear_bit(BRCMF_SCAN_STATUS_SUPPRESS, &cfg->scan_status); +} + +static int brcmf_convert_nl80211_tdls_oper(enum nl80211_tdls_operation oper) +{ + int ret; + + switch (oper) { + case NL80211_TDLS_DISCOVERY_REQ: + ret = BRCMF_TDLS_MANUAL_EP_DISCOVERY; + break; + case NL80211_TDLS_SETUP: + ret = BRCMF_TDLS_MANUAL_EP_CREATE; + break; + case NL80211_TDLS_TEARDOWN: + ret = BRCMF_TDLS_MANUAL_EP_DELETE; + break; + default: + brcmf_err("unsupported operation: %d\n", oper); + ret = -EOPNOTSUPP; + } + return ret; +} + +static int brcmf_cfg80211_tdls_oper(struct wiphy *wiphy, + struct net_device *ndev, const u8 *peer, + enum nl80211_tdls_operation oper) +{ + struct brcmf_if *ifp; + struct brcmf_tdls_iovar_le info; + int ret = 0; + + ret = brcmf_convert_nl80211_tdls_oper(oper); + if (ret < 0) + return ret; + + ifp = netdev_priv(ndev); + memset(&info, 0, sizeof(info)); + info.mode = (u8)ret; + if (peer) + memcpy(info.ea, peer, ETH_ALEN); + + ret = brcmf_fil_iovar_data_set(ifp, "tdls_endpoint", + &info, sizeof(info)); + if (ret < 0) + brcmf_err("tdls_endpoint iovar failed: ret=%d\n", ret); + + return ret; +} + +static struct cfg80211_ops wl_cfg80211_ops = { + .add_virtual_intf = brcmf_cfg80211_add_iface, + .del_virtual_intf = brcmf_cfg80211_del_iface, + .change_virtual_intf = brcmf_cfg80211_change_iface, + .scan = brcmf_cfg80211_scan, + .set_wiphy_params = brcmf_cfg80211_set_wiphy_params, + .join_ibss = brcmf_cfg80211_join_ibss, + .leave_ibss = brcmf_cfg80211_leave_ibss, + .get_station = brcmf_cfg80211_get_station, + .set_tx_power = brcmf_cfg80211_set_tx_power, + .get_tx_power = brcmf_cfg80211_get_tx_power, + .add_key = brcmf_cfg80211_add_key, + .del_key = brcmf_cfg80211_del_key, + .get_key = brcmf_cfg80211_get_key, + .set_default_key = brcmf_cfg80211_config_default_key, + .set_default_mgmt_key = brcmf_cfg80211_config_default_mgmt_key, + .set_power_mgmt = brcmf_cfg80211_set_power_mgmt, + .connect = brcmf_cfg80211_connect, + .disconnect = brcmf_cfg80211_disconnect, + .suspend = brcmf_cfg80211_suspend, + .resume = brcmf_cfg80211_resume, + .set_pmksa = brcmf_cfg80211_set_pmksa, + .del_pmksa = brcmf_cfg80211_del_pmksa, + .flush_pmksa = brcmf_cfg80211_flush_pmksa, + .start_ap = brcmf_cfg80211_start_ap, + .stop_ap = brcmf_cfg80211_stop_ap, + .change_beacon = brcmf_cfg80211_change_beacon, + .del_station = brcmf_cfg80211_del_station, + .sched_scan_start = brcmf_cfg80211_sched_scan_start, + .sched_scan_stop = brcmf_cfg80211_sched_scan_stop, + .mgmt_frame_register = brcmf_cfg80211_mgmt_frame_register, + .mgmt_tx = brcmf_cfg80211_mgmt_tx, + .remain_on_channel = brcmf_p2p_remain_on_channel, + .cancel_remain_on_channel = brcmf_cfg80211_cancel_remain_on_channel, + .start_p2p_device = brcmf_p2p_start_device, + .stop_p2p_device = brcmf_p2p_stop_device, + .crit_proto_start = brcmf_cfg80211_crit_proto_start, + .crit_proto_stop = brcmf_cfg80211_crit_proto_stop, + .tdls_oper = brcmf_cfg80211_tdls_oper, + CFG80211_TESTMODE_CMD(brcmf_cfg80211_testmode) +}; + +static void brcmf_wiphy_pno_params(struct wiphy *wiphy) +{ + /* scheduled scan settings */ + wiphy->max_sched_scan_ssids = BRCMF_PNO_MAX_PFN_COUNT; + wiphy->max_match_sets = BRCMF_PNO_MAX_PFN_COUNT; + wiphy->max_sched_scan_ie_len = BRCMF_SCAN_IE_LEN_MAX; + wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN; +} + +static const struct ieee80211_iface_limit brcmf_iface_limits[] = { + { + .max = 2, + .types = BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_ADHOC) | + BIT(NL80211_IFTYPE_AP) + }, + { + .max = 1, + .types = BIT(NL80211_IFTYPE_P2P_CLIENT) | + BIT(NL80211_IFTYPE_P2P_GO) + }, + { + .max = 1, + .types = BIT(NL80211_IFTYPE_P2P_DEVICE) + } +}; +static const struct ieee80211_iface_combination brcmf_iface_combos[] = { + { + .max_interfaces = BRCMF_IFACE_MAX_CNT, + .num_different_channels = 2, + .n_limits = ARRAY_SIZE(brcmf_iface_limits), + .limits = brcmf_iface_limits + } +}; + +static const struct ieee80211_txrx_stypes +brcmf_txrx_stypes[NUM_NL80211_IFTYPES] = { + [NL80211_IFTYPE_STATION] = { + .tx = 0xffff, + .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | + BIT(IEEE80211_STYPE_PROBE_REQ >> 4) + }, + [NL80211_IFTYPE_P2P_CLIENT] = { + .tx = 0xffff, + .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | + BIT(IEEE80211_STYPE_PROBE_REQ >> 4) + }, + [NL80211_IFTYPE_P2P_GO] = { + .tx = 0xffff, + .rx = BIT(IEEE80211_STYPE_ASSOC_REQ >> 4) | + BIT(IEEE80211_STYPE_REASSOC_REQ >> 4) | + BIT(IEEE80211_STYPE_PROBE_REQ >> 4) | + BIT(IEEE80211_STYPE_DISASSOC >> 4) | + BIT(IEEE80211_STYPE_AUTH >> 4) | + BIT(IEEE80211_STYPE_DEAUTH >> 4) | + BIT(IEEE80211_STYPE_ACTION >> 4) + }, + [NL80211_IFTYPE_P2P_DEVICE] = { + .tx = 0xffff, + .rx = BIT(IEEE80211_STYPE_ACTION >> 4) | + BIT(IEEE80211_STYPE_PROBE_REQ >> 4) + } +}; + +static struct wiphy *brcmf_setup_wiphy(struct device *phydev) +{ + struct wiphy *wiphy; + s32 err = 0; + + wiphy = wiphy_new(&wl_cfg80211_ops, sizeof(struct brcmf_cfg80211_info)); + if (!wiphy) { + brcmf_err("Could not allocate wiphy device\n"); + return ERR_PTR(-ENOMEM); + } + set_wiphy_dev(wiphy, phydev); + wiphy->max_scan_ssids = WL_NUM_SCAN_MAX; + wiphy->max_scan_ie_len = BRCMF_SCAN_IE_LEN_MAX; + wiphy->max_num_pmkids = WL_NUM_PMKIDS_MAX; + wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_ADHOC) | + BIT(NL80211_IFTYPE_AP) | + BIT(NL80211_IFTYPE_P2P_CLIENT) | + BIT(NL80211_IFTYPE_P2P_GO) | + BIT(NL80211_IFTYPE_P2P_DEVICE); + wiphy->iface_combinations = brcmf_iface_combos; + wiphy->n_iface_combinations = ARRAY_SIZE(brcmf_iface_combos); + wiphy->bands[IEEE80211_BAND_2GHZ] = &__wl_band_2ghz; + wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; + wiphy->cipher_suites = __wl_cipher_suites; + wiphy->n_cipher_suites = ARRAY_SIZE(__wl_cipher_suites); + wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT | + WIPHY_FLAG_OFFCHAN_TX | + WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL | + WIPHY_FLAG_SUPPORTS_TDLS; + if (!brcmf_roamoff) + wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM; + wiphy->mgmt_stypes = brcmf_txrx_stypes; + wiphy->max_remain_on_channel_duration = 5000; + brcmf_wiphy_pno_params(wiphy); + brcmf_dbg(INFO, "Registering custom regulatory\n"); + wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG; + wiphy_apply_custom_regulatory(wiphy, &brcmf_regdom); + err = wiphy_register(wiphy); + if (err < 0) { + brcmf_err("Could not register wiphy device (%d)\n", err); + wiphy_free(wiphy); + return ERR_PTR(err); + } + return wiphy; +} + +struct brcmf_cfg80211_vif *brcmf_alloc_vif(struct brcmf_cfg80211_info *cfg, + enum nl80211_iftype type, + bool pm_block) +{ + struct brcmf_cfg80211_vif *vif; + + brcmf_dbg(TRACE, "allocating virtual interface (size=%zu)\n", + sizeof(*vif)); + vif = kzalloc(sizeof(*vif), GFP_KERNEL); + if (!vif) + return ERR_PTR(-ENOMEM); + + vif->wdev.wiphy = cfg->wiphy; + vif->wdev.iftype = type; + + vif->pm_block = pm_block; + vif->roam_off = -1; + + brcmf_init_prof(&vif->profile); + + list_add_tail(&vif->list, &cfg->vif_list); + return vif; +} + +void brcmf_free_vif(struct brcmf_cfg80211_vif *vif) +{ + list_del(&vif->list); + kfree(vif); +} + +void brcmf_cfg80211_free_netdev(struct net_device *ndev) +{ + struct brcmf_cfg80211_vif *vif; + struct brcmf_if *ifp; + + ifp = netdev_priv(ndev); + vif = ifp->vif; + + brcmf_free_vif(vif); + free_netdev(ndev); +} + +static bool brcmf_is_linkup(const struct brcmf_event_msg *e) +{ + u32 event = e->event_code; + u32 status = e->status; + + if (event == BRCMF_E_SET_SSID && status == BRCMF_E_STATUS_SUCCESS) { + brcmf_dbg(CONN, "Processing set ssid\n"); + return true; + } + + return false; +} + +static bool brcmf_is_linkdown(const struct brcmf_event_msg *e) +{ + u32 event = e->event_code; + u16 flags = e->flags; + + if ((event == BRCMF_E_DEAUTH) || (event == BRCMF_E_DEAUTH_IND) || + (event == BRCMF_E_DISASSOC_IND) || + ((event == BRCMF_E_LINK) && (!(flags & BRCMF_EVENT_MSG_LINK)))) { + brcmf_dbg(CONN, "Processing link down\n"); + return true; + } + return false; +} + +static bool brcmf_is_nonetwork(struct brcmf_cfg80211_info *cfg, + const struct brcmf_event_msg *e) +{ + u32 event = e->event_code; + u32 status = e->status; + + if (event == BRCMF_E_LINK && status == BRCMF_E_STATUS_NO_NETWORKS) { + brcmf_dbg(CONN, "Processing Link %s & no network found\n", + e->flags & BRCMF_EVENT_MSG_LINK ? "up" : "down"); + return true; + } + + if (event == BRCMF_E_SET_SSID && status != BRCMF_E_STATUS_SUCCESS) { + brcmf_dbg(CONN, "Processing connecting & no network found\n"); + return true; + } + + return false; +} + +static void brcmf_clear_assoc_ies(struct brcmf_cfg80211_info *cfg) +{ + struct brcmf_cfg80211_connect_info *conn_info = cfg_to_conn(cfg); + + kfree(conn_info->req_ie); + conn_info->req_ie = NULL; + conn_info->req_ie_len = 0; + kfree(conn_info->resp_ie); + conn_info->resp_ie = NULL; + conn_info->resp_ie_len = 0; +} + +static s32 brcmf_get_assoc_ies(struct brcmf_cfg80211_info *cfg, + struct brcmf_if *ifp) +{ + struct brcmf_cfg80211_assoc_ielen_le *assoc_info; + struct brcmf_cfg80211_connect_info *conn_info = cfg_to_conn(cfg); + u32 req_len; + u32 resp_len; + s32 err = 0; + + brcmf_clear_assoc_ies(cfg); + + err = brcmf_fil_iovar_data_get(ifp, "assoc_info", + cfg->extra_buf, WL_ASSOC_INFO_MAX); + if (err) { + brcmf_err("could not get assoc info (%d)\n", err); + return err; + } + assoc_info = + (struct brcmf_cfg80211_assoc_ielen_le *)cfg->extra_buf; + req_len = le32_to_cpu(assoc_info->req_len); + resp_len = le32_to_cpu(assoc_info->resp_len); + if (req_len) { + err = brcmf_fil_iovar_data_get(ifp, "assoc_req_ies", + cfg->extra_buf, + WL_ASSOC_INFO_MAX); + if (err) { + brcmf_err("could not get assoc req (%d)\n", err); + return err; + } + conn_info->req_ie_len = req_len; + conn_info->req_ie = + kmemdup(cfg->extra_buf, conn_info->req_ie_len, + GFP_KERNEL); + } else { + conn_info->req_ie_len = 0; + conn_info->req_ie = NULL; + } + if (resp_len) { + err = brcmf_fil_iovar_data_get(ifp, "assoc_resp_ies", + cfg->extra_buf, + WL_ASSOC_INFO_MAX); + if (err) { + brcmf_err("could not get assoc resp (%d)\n", err); + return err; + } + conn_info->resp_ie_len = resp_len; + conn_info->resp_ie = + kmemdup(cfg->extra_buf, conn_info->resp_ie_len, + GFP_KERNEL); + } else { + conn_info->resp_ie_len = 0; + conn_info->resp_ie = NULL; + } + brcmf_dbg(CONN, "req len (%d) resp len (%d)\n", + conn_info->req_ie_len, conn_info->resp_ie_len); + + return err; +} + +static s32 +brcmf_bss_roaming_done(struct brcmf_cfg80211_info *cfg, + struct net_device *ndev, + const struct brcmf_event_msg *e) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_cfg80211_profile *profile = &ifp->vif->profile; + struct brcmf_cfg80211_connect_info *conn_info = cfg_to_conn(cfg); + struct wiphy *wiphy = cfg_to_wiphy(cfg); + struct ieee80211_channel *notify_channel = NULL; + struct ieee80211_supported_band *band; + struct brcmf_bss_info_le *bi; + struct brcmu_chan ch; + u32 freq; + s32 err = 0; + u8 *buf; + + brcmf_dbg(TRACE, "Enter\n"); + + brcmf_get_assoc_ies(cfg, ifp); + memcpy(profile->bssid, e->addr, ETH_ALEN); + brcmf_update_bss_info(cfg, ifp); + + buf = kzalloc(WL_BSS_INFO_MAX, GFP_KERNEL); + if (buf == NULL) { + err = -ENOMEM; + goto done; + } + + /* data sent to dongle has to be little endian */ + *(__le32 *)buf = cpu_to_le32(WL_BSS_INFO_MAX); + err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSS_INFO, + buf, WL_BSS_INFO_MAX); + + if (err) + goto done; + + bi = (struct brcmf_bss_info_le *)(buf + 4); + ch.chspec = le16_to_cpu(bi->chanspec); + cfg->d11inf.decchspec(&ch); + + if (ch.band == BRCMU_CHAN_BAND_2G) + band = wiphy->bands[IEEE80211_BAND_2GHZ]; + else + band = wiphy->bands[IEEE80211_BAND_5GHZ]; + + freq = ieee80211_channel_to_frequency(ch.chnum, band->band); + notify_channel = ieee80211_get_channel(wiphy, freq); + +done: + kfree(buf); + cfg80211_roamed(ndev, notify_channel, (u8 *)profile->bssid, + conn_info->req_ie, conn_info->req_ie_len, + conn_info->resp_ie, conn_info->resp_ie_len, GFP_KERNEL); + brcmf_dbg(CONN, "Report roaming result\n"); + + set_bit(BRCMF_VIF_STATUS_CONNECTED, &ifp->vif->sme_state); + brcmf_dbg(TRACE, "Exit\n"); + return err; +} + +static s32 +brcmf_bss_connect_done(struct brcmf_cfg80211_info *cfg, + struct net_device *ndev, const struct brcmf_event_msg *e, + bool completed) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_cfg80211_profile *profile = &ifp->vif->profile; + struct brcmf_cfg80211_connect_info *conn_info = cfg_to_conn(cfg); + s32 err = 0; + + brcmf_dbg(TRACE, "Enter\n"); + + if (test_and_clear_bit(BRCMF_VIF_STATUS_CONNECTING, + &ifp->vif->sme_state)) { + if (completed) { + brcmf_get_assoc_ies(cfg, ifp); + memcpy(profile->bssid, e->addr, ETH_ALEN); + brcmf_update_bss_info(cfg, ifp); + set_bit(BRCMF_VIF_STATUS_CONNECTED, + &ifp->vif->sme_state); + } + cfg80211_connect_result(ndev, + (u8 *)profile->bssid, + conn_info->req_ie, + conn_info->req_ie_len, + conn_info->resp_ie, + conn_info->resp_ie_len, + completed ? WLAN_STATUS_SUCCESS : + WLAN_STATUS_AUTH_TIMEOUT, + GFP_KERNEL); + brcmf_dbg(CONN, "Report connect result - connection %s\n", + completed ? "succeeded" : "failed"); + } + brcmf_dbg(TRACE, "Exit\n"); + return err; +} + +static s32 +brcmf_notify_connect_status_ap(struct brcmf_cfg80211_info *cfg, + struct net_device *ndev, + const struct brcmf_event_msg *e, void *data) +{ + static int generation; + u32 event = e->event_code; + u32 reason = e->reason; + struct station_info sinfo; + + brcmf_dbg(CONN, "event %d, reason %d\n", event, reason); + if (event == BRCMF_E_LINK && reason == BRCMF_E_REASON_LINK_BSSCFG_DIS && + ndev != cfg_to_ndev(cfg)) { + brcmf_dbg(CONN, "AP mode link down\n"); + complete(&cfg->vif_disabled); + return 0; + } + + if (((event == BRCMF_E_ASSOC_IND) || (event == BRCMF_E_REASSOC_IND)) && + (reason == BRCMF_E_STATUS_SUCCESS)) { + memset(&sinfo, 0, sizeof(sinfo)); + sinfo.filled = STATION_INFO_ASSOC_REQ_IES; + if (!data) { + brcmf_err("No IEs present in ASSOC/REASSOC_IND"); + return -EINVAL; + } + sinfo.assoc_req_ies = data; + sinfo.assoc_req_ies_len = e->datalen; + generation++; + sinfo.generation = generation; + cfg80211_new_sta(ndev, e->addr, &sinfo, GFP_KERNEL); + } else if ((event == BRCMF_E_DISASSOC_IND) || + (event == BRCMF_E_DEAUTH_IND) || + (event == BRCMF_E_DEAUTH)) { + cfg80211_del_sta(ndev, e->addr, GFP_KERNEL); + } + return 0; +} + +static s32 +brcmf_notify_connect_status(struct brcmf_if *ifp, + const struct brcmf_event_msg *e, void *data) +{ + struct brcmf_cfg80211_info *cfg = ifp->drvr->config; + struct net_device *ndev = ifp->ndev; + struct brcmf_cfg80211_profile *profile = &ifp->vif->profile; + struct ieee80211_channel *chan; + s32 err = 0; + + if (brcmf_is_apmode(ifp->vif)) { + err = brcmf_notify_connect_status_ap(cfg, ndev, e, data); + } else if (brcmf_is_linkup(e)) { + brcmf_dbg(CONN, "Linkup\n"); + if (brcmf_is_ibssmode(ifp->vif)) { + chan = ieee80211_get_channel(cfg->wiphy, cfg->channel); + memcpy(profile->bssid, e->addr, ETH_ALEN); + wl_inform_ibss(cfg, ndev, e->addr); + cfg80211_ibss_joined(ndev, e->addr, chan, GFP_KERNEL); + clear_bit(BRCMF_VIF_STATUS_CONNECTING, + &ifp->vif->sme_state); + set_bit(BRCMF_VIF_STATUS_CONNECTED, + &ifp->vif->sme_state); + } else + brcmf_bss_connect_done(cfg, ndev, e, true); + } else if (brcmf_is_linkdown(e)) { + brcmf_dbg(CONN, "Linkdown\n"); + if (!brcmf_is_ibssmode(ifp->vif)) { + brcmf_bss_connect_done(cfg, ndev, e, false); + } + brcmf_link_down(ifp->vif); + brcmf_init_prof(ndev_to_prof(ndev)); + if (ndev != cfg_to_ndev(cfg)) + complete(&cfg->vif_disabled); + } else if (brcmf_is_nonetwork(cfg, e)) { + if (brcmf_is_ibssmode(ifp->vif)) + clear_bit(BRCMF_VIF_STATUS_CONNECTING, + &ifp->vif->sme_state); + else + brcmf_bss_connect_done(cfg, ndev, e, false); + } + + return err; +} + +static s32 +brcmf_notify_roaming_status(struct brcmf_if *ifp, + const struct brcmf_event_msg *e, void *data) +{ + struct brcmf_cfg80211_info *cfg = ifp->drvr->config; + s32 err = 0; + u32 event = e->event_code; + u32 status = e->status; + + if (event == BRCMF_E_ROAM && status == BRCMF_E_STATUS_SUCCESS) { + if (test_bit(BRCMF_VIF_STATUS_CONNECTED, &ifp->vif->sme_state)) + brcmf_bss_roaming_done(cfg, ifp->ndev, e); + else + brcmf_bss_connect_done(cfg, ifp->ndev, e, true); + } + + return err; +} + +static s32 +brcmf_notify_mic_status(struct brcmf_if *ifp, + const struct brcmf_event_msg *e, void *data) +{ + u16 flags = e->flags; + enum nl80211_key_type key_type; + + if (flags & BRCMF_EVENT_MSG_GROUP) + key_type = NL80211_KEYTYPE_GROUP; + else + key_type = NL80211_KEYTYPE_PAIRWISE; + + cfg80211_michael_mic_failure(ifp->ndev, (u8 *)&e->addr, key_type, -1, + NULL, GFP_KERNEL); + + return 0; +} + +static s32 brcmf_notify_vif_event(struct brcmf_if *ifp, + const struct brcmf_event_msg *e, void *data) +{ + struct brcmf_cfg80211_info *cfg = ifp->drvr->config; + struct brcmf_if_event *ifevent = (struct brcmf_if_event *)data; + struct brcmf_cfg80211_vif_event *event = &cfg->vif_event; + struct brcmf_cfg80211_vif *vif; + + brcmf_dbg(TRACE, "Enter: action %u flags %u ifidx %u bsscfg %u\n", + ifevent->action, ifevent->flags, ifevent->ifidx, + ifevent->bssidx); + + mutex_lock(&event->vif_event_lock); + event->action = ifevent->action; + vif = event->vif; + + switch (ifevent->action) { + case BRCMF_E_IF_ADD: + /* waiting process may have timed out */ + if (!cfg->vif_event.vif) { + mutex_unlock(&event->vif_event_lock); + return -EBADF; + } + + ifp->vif = vif; + vif->ifp = ifp; + if (ifp->ndev) { + vif->wdev.netdev = ifp->ndev; + ifp->ndev->ieee80211_ptr = &vif->wdev; + SET_NETDEV_DEV(ifp->ndev, wiphy_dev(cfg->wiphy)); + } + mutex_unlock(&event->vif_event_lock); + wake_up(&event->vif_wq); + return 0; + + case BRCMF_E_IF_DEL: + mutex_unlock(&event->vif_event_lock); + /* event may not be upon user request */ + if (brcmf_cfg80211_vif_event_armed(cfg)) + wake_up(&event->vif_wq); + return 0; + + case BRCMF_E_IF_CHANGE: + mutex_unlock(&event->vif_event_lock); + wake_up(&event->vif_wq); + return 0; + + default: + mutex_unlock(&event->vif_event_lock); + break; + } + return -EINVAL; +} + +static void brcmf_init_conf(struct brcmf_cfg80211_conf *conf) +{ + conf->frag_threshold = (u32)-1; + conf->rts_threshold = (u32)-1; + conf->retry_short = (u32)-1; + conf->retry_long = (u32)-1; + conf->tx_power = -1; +} + +static void brcmf_register_event_handlers(struct brcmf_cfg80211_info *cfg) +{ + brcmf_fweh_register(cfg->pub, BRCMF_E_LINK, + brcmf_notify_connect_status); + brcmf_fweh_register(cfg->pub, BRCMF_E_DEAUTH_IND, + brcmf_notify_connect_status); + brcmf_fweh_register(cfg->pub, BRCMF_E_DEAUTH, + brcmf_notify_connect_status); + brcmf_fweh_register(cfg->pub, BRCMF_E_DISASSOC_IND, + brcmf_notify_connect_status); + brcmf_fweh_register(cfg->pub, BRCMF_E_ASSOC_IND, + brcmf_notify_connect_status); + brcmf_fweh_register(cfg->pub, BRCMF_E_REASSOC_IND, + brcmf_notify_connect_status); + brcmf_fweh_register(cfg->pub, BRCMF_E_ROAM, + brcmf_notify_roaming_status); + brcmf_fweh_register(cfg->pub, BRCMF_E_MIC_ERROR, + brcmf_notify_mic_status); + brcmf_fweh_register(cfg->pub, BRCMF_E_SET_SSID, + brcmf_notify_connect_status); + brcmf_fweh_register(cfg->pub, BRCMF_E_PFN_NET_FOUND, + brcmf_notify_sched_scan_results); + brcmf_fweh_register(cfg->pub, BRCMF_E_IF, + brcmf_notify_vif_event); + brcmf_fweh_register(cfg->pub, BRCMF_E_P2P_PROBEREQ_MSG, + brcmf_p2p_notify_rx_mgmt_p2p_probereq); + brcmf_fweh_register(cfg->pub, BRCMF_E_P2P_DISC_LISTEN_COMPLETE, + brcmf_p2p_notify_listen_complete); + brcmf_fweh_register(cfg->pub, BRCMF_E_ACTION_FRAME_RX, + brcmf_p2p_notify_action_frame_rx); + brcmf_fweh_register(cfg->pub, BRCMF_E_ACTION_FRAME_COMPLETE, + brcmf_p2p_notify_action_tx_complete); + brcmf_fweh_register(cfg->pub, BRCMF_E_ACTION_FRAME_OFF_CHAN_COMPLETE, + brcmf_p2p_notify_action_tx_complete); +} + +static void brcmf_deinit_priv_mem(struct brcmf_cfg80211_info *cfg) +{ + kfree(cfg->conf); + cfg->conf = NULL; + kfree(cfg->escan_ioctl_buf); + cfg->escan_ioctl_buf = NULL; + kfree(cfg->extra_buf); + cfg->extra_buf = NULL; + kfree(cfg->pmk_list); + cfg->pmk_list = NULL; +} + +static s32 brcmf_init_priv_mem(struct brcmf_cfg80211_info *cfg) +{ + cfg->conf = kzalloc(sizeof(*cfg->conf), GFP_KERNEL); + if (!cfg->conf) + goto init_priv_mem_out; + cfg->escan_ioctl_buf = kzalloc(BRCMF_DCMD_MEDLEN, GFP_KERNEL); + if (!cfg->escan_ioctl_buf) + goto init_priv_mem_out; + cfg->extra_buf = kzalloc(WL_EXTRA_BUF_MAX, GFP_KERNEL); + if (!cfg->extra_buf) + goto init_priv_mem_out; + cfg->pmk_list = kzalloc(sizeof(*cfg->pmk_list), GFP_KERNEL); + if (!cfg->pmk_list) + goto init_priv_mem_out; + + return 0; + +init_priv_mem_out: + brcmf_deinit_priv_mem(cfg); + + return -ENOMEM; +} + +static s32 wl_init_priv(struct brcmf_cfg80211_info *cfg) +{ + s32 err = 0; + + cfg->scan_request = NULL; + cfg->pwr_save = true; + cfg->active_scan = true; /* we do active scan per default */ + cfg->dongle_up = false; /* dongle is not up yet */ + err = brcmf_init_priv_mem(cfg); + if (err) + return err; + brcmf_register_event_handlers(cfg); + mutex_init(&cfg->usr_sync); + brcmf_init_escan(cfg); + brcmf_init_conf(cfg->conf); + init_completion(&cfg->vif_disabled); + return err; +} + +static void wl_deinit_priv(struct brcmf_cfg80211_info *cfg) +{ + cfg->dongle_up = false; /* dongle down */ + brcmf_abort_scanning(cfg); + brcmf_deinit_priv_mem(cfg); +} + +static void init_vif_event(struct brcmf_cfg80211_vif_event *event) +{ + init_waitqueue_head(&event->vif_wq); + mutex_init(&event->vif_event_lock); +} + +static int brcmf_enable_bw40_2g(struct brcmf_if *ifp) +{ + struct brcmf_fil_bwcap_le band_bwcap; + u32 val; + int err; + + /* verify support for bw_cap command */ + val = WLC_BAND_5G; + err = brcmf_fil_iovar_int_get(ifp, "bw_cap", &val); + + if (!err) { + /* only set 2G bandwidth using bw_cap command */ + band_bwcap.band = cpu_to_le32(WLC_BAND_2G); + band_bwcap.bw_cap = cpu_to_le32(WLC_BW_CAP_40MHZ); + err = brcmf_fil_iovar_data_set(ifp, "bw_cap", &band_bwcap, + sizeof(band_bwcap)); + } else { + brcmf_dbg(INFO, "fallback to mimo_bw_cap\n"); + val = WLC_N_BW_40ALL; + err = brcmf_fil_iovar_int_set(ifp, "mimo_bw_cap", val); + } + return err; +} + +struct brcmf_cfg80211_info *brcmf_cfg80211_attach(struct brcmf_pub *drvr, + struct device *busdev) +{ + struct net_device *ndev = drvr->iflist[0]->ndev; + struct brcmf_cfg80211_info *cfg; + struct wiphy *wiphy; + struct brcmf_cfg80211_vif *vif; + struct brcmf_if *ifp; + s32 err = 0; + s32 io_type; + + if (!ndev) { + brcmf_err("ndev is invalid\n"); + return NULL; + } + + ifp = netdev_priv(ndev); + wiphy = brcmf_setup_wiphy(busdev); + if (IS_ERR(wiphy)) + return NULL; + + cfg = wiphy_priv(wiphy); + cfg->wiphy = wiphy; + cfg->pub = drvr; + init_vif_event(&cfg->vif_event); + INIT_LIST_HEAD(&cfg->vif_list); + + vif = brcmf_alloc_vif(cfg, NL80211_IFTYPE_STATION, false); + if (IS_ERR(vif)) { + wiphy_free(wiphy); + return NULL; + } + + vif->ifp = ifp; + vif->wdev.netdev = ndev; + ndev->ieee80211_ptr = &vif->wdev; + SET_NETDEV_DEV(ndev, wiphy_dev(cfg->wiphy)); + + err = wl_init_priv(cfg); + if (err) { + brcmf_err("Failed to init iwm_priv (%d)\n", err); + goto cfg80211_attach_out; + } + ifp->vif = vif; + + err = brcmf_p2p_attach(cfg); + if (err) { + brcmf_err("P2P initilisation failed (%d)\n", err); + goto cfg80211_p2p_attach_out; + } + err = brcmf_btcoex_attach(cfg); + if (err) { + brcmf_err("BT-coex initialisation failed (%d)\n", err); + brcmf_p2p_detach(&cfg->p2p); + goto cfg80211_p2p_attach_out; + } + + /* If cfg80211 didn't disable 40MHz HT CAP in wiphy_register(), + * setup 40MHz in 2GHz band and enable OBSS scanning. + */ + if (wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap.cap & + IEEE80211_HT_CAP_SUP_WIDTH_20_40) { + err = brcmf_enable_bw40_2g(ifp); + if (!err) + err = brcmf_fil_iovar_int_set(ifp, "obss_coex", + BRCMF_OBSS_COEX_AUTO); + } + + err = brcmf_fil_iovar_int_set(ifp, "tdls_enable", 1); + if (err) { + brcmf_dbg(INFO, "TDLS not enabled (%d)\n", err); + wiphy->flags &= ~WIPHY_FLAG_SUPPORTS_TDLS; + } + + err = brcmf_fil_cmd_int_get(ifp, BRCMF_C_GET_VERSION, + &io_type); + if (err) { + brcmf_err("Failed to get D11 version (%d)\n", err); + goto cfg80211_p2p_attach_out; + } + cfg->d11inf.io_type = (u8)io_type; + brcmu_d11_attach(&cfg->d11inf); + + return cfg; + +cfg80211_p2p_attach_out: + wl_deinit_priv(cfg); + +cfg80211_attach_out: + brcmf_free_vif(vif); + return NULL; +} + +void brcmf_cfg80211_detach(struct brcmf_cfg80211_info *cfg) +{ + if (!cfg) + return; + + WARN_ON(!list_empty(&cfg->vif_list)); + wiphy_unregister(cfg->wiphy); + brcmf_btcoex_detach(cfg); + wl_deinit_priv(cfg); + wiphy_free(cfg->wiphy); +} + +static s32 +brcmf_dongle_roam(struct brcmf_if *ifp, u32 bcn_timeout) +{ + s32 err = 0; + __le32 roamtrigger[2]; + __le32 roam_delta[2]; + + /* + * Setup timeout if Beacons are lost and roam is + * off to report link down + */ + if (brcmf_roamoff) { + err = brcmf_fil_iovar_int_set(ifp, "bcn_timeout", bcn_timeout); + if (err) { + brcmf_err("bcn_timeout error (%d)\n", err); + goto dongle_rom_out; + } + } + + /* + * Enable/Disable built-in roaming to allow supplicant + * to take care of roaming + */ + brcmf_dbg(INFO, "Internal Roaming = %s\n", + brcmf_roamoff ? "Off" : "On"); + err = brcmf_fil_iovar_int_set(ifp, "roam_off", !!(brcmf_roamoff)); + if (err) { + brcmf_err("roam_off error (%d)\n", err); + goto dongle_rom_out; + } + + roamtrigger[0] = cpu_to_le32(WL_ROAM_TRIGGER_LEVEL); + roamtrigger[1] = cpu_to_le32(BRCM_BAND_ALL); + err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SET_ROAM_TRIGGER, + (void *)roamtrigger, sizeof(roamtrigger)); + if (err) { + brcmf_err("WLC_SET_ROAM_TRIGGER error (%d)\n", err); + goto dongle_rom_out; + } + + roam_delta[0] = cpu_to_le32(WL_ROAM_DELTA); + roam_delta[1] = cpu_to_le32(BRCM_BAND_ALL); + err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SET_ROAM_DELTA, + (void *)roam_delta, sizeof(roam_delta)); + if (err) { + brcmf_err("WLC_SET_ROAM_DELTA error (%d)\n", err); + goto dongle_rom_out; + } + +dongle_rom_out: + return err; +} + +static s32 +brcmf_dongle_scantime(struct brcmf_if *ifp, s32 scan_assoc_time, + s32 scan_unassoc_time, s32 scan_passive_time) +{ + s32 err = 0; + + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_CHANNEL_TIME, + scan_assoc_time); + if (err) { + if (err == -EOPNOTSUPP) + brcmf_dbg(INFO, "Scan assoc time is not supported\n"); + else + brcmf_err("Scan assoc time error (%d)\n", err); + goto dongle_scantime_out; + } + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_UNASSOC_TIME, + scan_unassoc_time); + if (err) { + if (err == -EOPNOTSUPP) + brcmf_dbg(INFO, "Scan unassoc time is not supported\n"); + else + brcmf_err("Scan unassoc time error (%d)\n", err); + goto dongle_scantime_out; + } + + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_SCAN_PASSIVE_TIME, + scan_passive_time); + if (err) { + if (err == -EOPNOTSUPP) + brcmf_dbg(INFO, "Scan passive time is not supported\n"); + else + brcmf_err("Scan passive time error (%d)\n", err); + goto dongle_scantime_out; + } + +dongle_scantime_out: + return err; +} + + +static s32 brcmf_construct_reginfo(struct brcmf_cfg80211_info *cfg, + u32 bw_cap[]) +{ + struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg)); + struct ieee80211_channel *band_chan_arr; + struct brcmf_chanspec_list *list; + struct brcmu_chan ch; + s32 err; + u8 *pbuf; + u32 i, j; + u32 total; + enum ieee80211_band band; + u32 channel; + u32 *n_cnt; + u32 index; + u32 ht40_flag; + bool update; + u32 array_size; + + pbuf = kzalloc(BRCMF_DCMD_MEDLEN, GFP_KERNEL); + + if (pbuf == NULL) + return -ENOMEM; + + list = (struct brcmf_chanspec_list *)pbuf; + + err = brcmf_fil_iovar_data_get(ifp, "chanspecs", pbuf, + BRCMF_DCMD_MEDLEN); + if (err) { + brcmf_err("get chanspecs error (%d)\n", err); + goto exit; + } + + __wl_band_2ghz.n_channels = 0; + __wl_band_5ghz_a.n_channels = 0; + + total = le32_to_cpu(list->count); + for (i = 0; i < total; i++) { + ch.chspec = (u16)le32_to_cpu(list->element[i]); + cfg->d11inf.decchspec(&ch); + + if (ch.band == BRCMU_CHAN_BAND_2G) { + band_chan_arr = __wl_2ghz_channels; + array_size = ARRAY_SIZE(__wl_2ghz_channels); + n_cnt = &__wl_band_2ghz.n_channels; + band = IEEE80211_BAND_2GHZ; + } else if (ch.band == BRCMU_CHAN_BAND_5G) { + band_chan_arr = __wl_5ghz_a_channels; + array_size = ARRAY_SIZE(__wl_5ghz_a_channels); + n_cnt = &__wl_band_5ghz_a.n_channels; + band = IEEE80211_BAND_5GHZ; + } else { + brcmf_err("Invalid channel Spec. 0x%x.\n", ch.chspec); + continue; + } + if (!(bw_cap[band] & WLC_BW_40MHZ_BIT) && + ch.bw == BRCMU_CHAN_BW_40) + continue; + if (!(bw_cap[band] & WLC_BW_80MHZ_BIT) && + ch.bw == BRCMU_CHAN_BW_80) + continue; + update = false; + for (j = 0; (j < *n_cnt && (*n_cnt < array_size)); j++) { + if (band_chan_arr[j].hw_value == ch.chnum) { + update = true; + break; + } + } + if (update) + index = j; + else + index = *n_cnt; + if (index < array_size) { + band_chan_arr[index].center_freq = + ieee80211_channel_to_frequency(ch.chnum, band); + band_chan_arr[index].hw_value = ch.chnum; + + /* assuming the chanspecs order is HT20, + * HT40 upper, HT40 lower, and VHT80. + */ + if (ch.bw == BRCMU_CHAN_BW_80) { + band_chan_arr[index].flags &= + ~IEEE80211_CHAN_NO_80MHZ; + } else if (ch.bw == BRCMU_CHAN_BW_40) { + ht40_flag = band_chan_arr[index].flags & + IEEE80211_CHAN_NO_HT40; + if (ch.sb == BRCMU_CHAN_SB_U) { + if (ht40_flag == IEEE80211_CHAN_NO_HT40) + band_chan_arr[index].flags &= + ~IEEE80211_CHAN_NO_HT40; + band_chan_arr[index].flags |= + IEEE80211_CHAN_NO_HT40PLUS; + } else { + /* It should be one of + * IEEE80211_CHAN_NO_HT40 or + * IEEE80211_CHAN_NO_HT40PLUS + */ + band_chan_arr[index].flags &= + ~IEEE80211_CHAN_NO_HT40; + if (ht40_flag == IEEE80211_CHAN_NO_HT40) + band_chan_arr[index].flags |= + IEEE80211_CHAN_NO_HT40MINUS; + } + } else { + /* disable other bandwidths for now as mentioned + * order assure they are enabled for subsequent + * chanspecs. + */ + band_chan_arr[index].flags = + IEEE80211_CHAN_NO_HT40 | + IEEE80211_CHAN_NO_80MHZ; + ch.bw = BRCMU_CHAN_BW_20; + cfg->d11inf.encchspec(&ch); + channel = ch.chspec; + err = brcmf_fil_bsscfg_int_get(ifp, + "per_chan_info", + &channel); + if (!err) { + if (channel & WL_CHAN_RADAR) + band_chan_arr[index].flags |= + (IEEE80211_CHAN_RADAR | + IEEE80211_CHAN_NO_IR); + if (channel & WL_CHAN_PASSIVE) + band_chan_arr[index].flags |= + IEEE80211_CHAN_NO_IR; + } + } + if (!update) + (*n_cnt)++; + } + } +exit: + kfree(pbuf); + return err; +} + +static void brcmf_get_bwcap(struct brcmf_if *ifp, u32 bw_cap[]) +{ + u32 band, mimo_bwcap; + int err; + + band = WLC_BAND_2G; + err = brcmf_fil_iovar_int_get(ifp, "bw_cap", &band); + if (!err) { + bw_cap[IEEE80211_BAND_2GHZ] = band; + band = WLC_BAND_5G; + err = brcmf_fil_iovar_int_get(ifp, "bw_cap", &band); + if (!err) { + bw_cap[IEEE80211_BAND_5GHZ] = band; + return; + } + WARN_ON(1); + return; + } + brcmf_dbg(INFO, "fallback to mimo_bw_cap info\n"); + mimo_bwcap = 0; + err = brcmf_fil_iovar_int_get(ifp, "mimo_bw_cap", &mimo_bwcap); + if (err) + /* assume 20MHz if firmware does not give a clue */ + mimo_bwcap = WLC_N_BW_20ALL; + + switch (mimo_bwcap) { + case WLC_N_BW_40ALL: + bw_cap[IEEE80211_BAND_2GHZ] |= WLC_BW_40MHZ_BIT; + /* fall-thru */ + case WLC_N_BW_20IN2G_40IN5G: + bw_cap[IEEE80211_BAND_5GHZ] |= WLC_BW_40MHZ_BIT; + /* fall-thru */ + case WLC_N_BW_20ALL: + bw_cap[IEEE80211_BAND_2GHZ] |= WLC_BW_20MHZ_BIT; + bw_cap[IEEE80211_BAND_5GHZ] |= WLC_BW_20MHZ_BIT; + break; + default: + brcmf_err("invalid mimo_bw_cap value\n"); + } +} + +static void brcmf_update_ht_cap(struct ieee80211_supported_band *band, + u32 bw_cap[2], u32 nchain) +{ + band->ht_cap.ht_supported = true; + if (bw_cap[band->band] & WLC_BW_40MHZ_BIT) { + band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_40; + band->ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; + } + band->ht_cap.cap |= IEEE80211_HT_CAP_SGI_20; + band->ht_cap.cap |= IEEE80211_HT_CAP_DSSSCCK40; + band->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; + band->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_16; + memset(band->ht_cap.mcs.rx_mask, 0xff, nchain); + band->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; +} + +static __le16 brcmf_get_mcs_map(u32 nchain, enum ieee80211_vht_mcs_support supp) +{ + u16 mcs_map; + int i; + + for (i = 0, mcs_map = 0xFFFF; i < nchain; i++) + mcs_map = (mcs_map << 2) | supp; + + return cpu_to_le16(mcs_map); +} + +static void brcmf_update_vht_cap(struct ieee80211_supported_band *band, + u32 bw_cap[2], u32 nchain) +{ + __le16 mcs_map; + + /* not allowed in 2.4G band */ + if (band->band == IEEE80211_BAND_2GHZ) + return; + + band->vht_cap.vht_supported = true; + /* 80MHz is mandatory */ + band->vht_cap.cap |= IEEE80211_VHT_CAP_SHORT_GI_80; + if (bw_cap[band->band] & WLC_BW_160MHZ_BIT) { + band->vht_cap.cap |= IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ; + band->vht_cap.cap |= IEEE80211_VHT_CAP_SHORT_GI_160; + } + /* all support 256-QAM */ + mcs_map = brcmf_get_mcs_map(nchain, IEEE80211_VHT_MCS_SUPPORT_0_9); + band->vht_cap.vht_mcs.rx_mcs_map = mcs_map; + band->vht_cap.vht_mcs.tx_mcs_map = mcs_map; +} + +static s32 brcmf_update_wiphybands(struct brcmf_cfg80211_info *cfg) +{ + struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg)); + struct wiphy *wiphy; + s32 phy_list; + u32 band_list[3]; + u32 nmode = 0; + u32 vhtmode = 0; + u32 bw_cap[2] = { 0, 0 }; + u32 rxchain; + u32 nchain; + s8 phy; + s32 err; + u32 nband; + s32 i; + struct ieee80211_supported_band *bands[2] = { NULL, NULL }; + struct ieee80211_supported_band *band; + + err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_PHYLIST, + &phy_list, sizeof(phy_list)); + if (err) { + brcmf_err("BRCMF_C_GET_PHYLIST error (%d)\n", err); + return err; + } + + phy = ((char *)&phy_list)[0]; + brcmf_dbg(INFO, "BRCMF_C_GET_PHYLIST reported: %c phy\n", phy); + + + err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BANDLIST, + &band_list, sizeof(band_list)); + if (err) { + brcmf_err("BRCMF_C_GET_BANDLIST error (%d)\n", err); + return err; + } + brcmf_dbg(INFO, "BRCMF_C_GET_BANDLIST reported: 0x%08x 0x%08x 0x%08x phy\n", + band_list[0], band_list[1], band_list[2]); + + (void)brcmf_fil_iovar_int_get(ifp, "vhtmode", &vhtmode); + err = brcmf_fil_iovar_int_get(ifp, "nmode", &nmode); + if (err) { + brcmf_err("nmode error (%d)\n", err); + } else { + brcmf_get_bwcap(ifp, bw_cap); + } + brcmf_dbg(INFO, "nmode=%d, vhtmode=%d, bw_cap=(%d, %d)\n", + nmode, vhtmode, bw_cap[IEEE80211_BAND_2GHZ], + bw_cap[IEEE80211_BAND_5GHZ]); + + err = brcmf_fil_iovar_int_get(ifp, "rxchain", &rxchain); + if (err) { + brcmf_err("rxchain error (%d)\n", err); + nchain = 1; + } else { + for (nchain = 0; rxchain; nchain++) + rxchain = rxchain & (rxchain - 1); + } + brcmf_dbg(INFO, "nchain=%d\n", nchain); + + err = brcmf_construct_reginfo(cfg, bw_cap); + if (err) { + brcmf_err("brcmf_construct_reginfo failed (%d)\n", err); + return err; + } + + nband = band_list[0]; + + for (i = 1; i <= nband && i < ARRAY_SIZE(band_list); i++) { + band = NULL; + if ((band_list[i] == WLC_BAND_5G) && + (__wl_band_5ghz_a.n_channels > 0)) + band = &__wl_band_5ghz_a; + else if ((band_list[i] == WLC_BAND_2G) && + (__wl_band_2ghz.n_channels > 0)) + band = &__wl_band_2ghz; + else + continue; + + if (nmode) + brcmf_update_ht_cap(band, bw_cap, nchain); + if (vhtmode) + brcmf_update_vht_cap(band, bw_cap, nchain); + bands[band->band] = band; + } + + wiphy = cfg_to_wiphy(cfg); + wiphy->bands[IEEE80211_BAND_2GHZ] = bands[IEEE80211_BAND_2GHZ]; + wiphy->bands[IEEE80211_BAND_5GHZ] = bands[IEEE80211_BAND_5GHZ]; + wiphy_apply_custom_regulatory(wiphy, &brcmf_regdom); + + return err; +} + + +static s32 brcmf_dongle_probecap(struct brcmf_cfg80211_info *cfg) +{ + return brcmf_update_wiphybands(cfg); +} + +static s32 brcmf_config_dongle(struct brcmf_cfg80211_info *cfg) +{ + struct net_device *ndev; + struct wireless_dev *wdev; + struct brcmf_if *ifp; + s32 power_mode; + s32 err = 0; + + if (cfg->dongle_up) + return err; + + ndev = cfg_to_ndev(cfg); + wdev = ndev->ieee80211_ptr; + ifp = netdev_priv(ndev); + + /* make sure RF is ready for work */ + brcmf_fil_cmd_int_set(ifp, BRCMF_C_UP, 0); + + brcmf_dongle_scantime(ifp, WL_SCAN_CHANNEL_TIME, + WL_SCAN_UNASSOC_TIME, WL_SCAN_PASSIVE_TIME); + + power_mode = cfg->pwr_save ? PM_FAST : PM_OFF; + err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PM, power_mode); + if (err) + goto default_conf_out; + brcmf_dbg(INFO, "power save set to %s\n", + (power_mode ? "enabled" : "disabled")); + + err = brcmf_dongle_roam(ifp, WL_BEACON_TIMEOUT); + if (err) + goto default_conf_out; + err = brcmf_cfg80211_change_iface(wdev->wiphy, ndev, wdev->iftype, + NULL, NULL); + if (err) + goto default_conf_out; + err = brcmf_dongle_probecap(cfg); + if (err) + goto default_conf_out; + + brcmf_configure_arp_offload(ifp, true); + + cfg->dongle_up = true; +default_conf_out: + + return err; + +} + +static s32 __brcmf_cfg80211_up(struct brcmf_if *ifp) +{ + set_bit(BRCMF_VIF_STATUS_READY, &ifp->vif->sme_state); + + return brcmf_config_dongle(ifp->drvr->config); +} + +static s32 __brcmf_cfg80211_down(struct brcmf_if *ifp) +{ + struct brcmf_cfg80211_info *cfg = ifp->drvr->config; + + /* + * While going down, if associated with AP disassociate + * from AP to save power + */ + if (check_vif_up(ifp->vif)) { + brcmf_link_down(ifp->vif); + + /* Make sure WPA_Supplicant receives all the event + generated due to DISASSOC call to the fw to keep + the state fw and WPA_Supplicant state consistent + */ + brcmf_delay(500); + } + + brcmf_abort_scanning(cfg); + clear_bit(BRCMF_VIF_STATUS_READY, &ifp->vif->sme_state); + + return 0; +} + +s32 brcmf_cfg80211_up(struct net_device *ndev) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_cfg80211_info *cfg = ifp->drvr->config; + s32 err = 0; + + mutex_lock(&cfg->usr_sync); + err = __brcmf_cfg80211_up(ifp); + mutex_unlock(&cfg->usr_sync); + + return err; +} + +s32 brcmf_cfg80211_down(struct net_device *ndev) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + struct brcmf_cfg80211_info *cfg = ifp->drvr->config; + s32 err = 0; + + mutex_lock(&cfg->usr_sync); + err = __brcmf_cfg80211_down(ifp); + mutex_unlock(&cfg->usr_sync); + + return err; +} + +enum nl80211_iftype brcmf_cfg80211_get_iftype(struct brcmf_if *ifp) +{ + struct wireless_dev *wdev = &ifp->vif->wdev; + + return wdev->iftype; +} + +u32 wl_get_vif_state_all(struct brcmf_cfg80211_info *cfg, unsigned long state) +{ + struct brcmf_cfg80211_vif *vif; + bool result = 0; + + list_for_each_entry(vif, &cfg->vif_list, list) { + if (test_bit(state, &vif->sme_state)) + result++; + } + return result; +} + +static inline bool vif_event_equals(struct brcmf_cfg80211_vif_event *event, + u8 action) +{ + u8 evt_action; + + mutex_lock(&event->vif_event_lock); + evt_action = event->action; + mutex_unlock(&event->vif_event_lock); + return evt_action == action; +} + +void brcmf_cfg80211_arm_vif_event(struct brcmf_cfg80211_info *cfg, + struct brcmf_cfg80211_vif *vif) +{ + struct brcmf_cfg80211_vif_event *event = &cfg->vif_event; + + mutex_lock(&event->vif_event_lock); + event->vif = vif; + event->action = 0; + mutex_unlock(&event->vif_event_lock); +} + +bool brcmf_cfg80211_vif_event_armed(struct brcmf_cfg80211_info *cfg) +{ + struct brcmf_cfg80211_vif_event *event = &cfg->vif_event; + bool armed; + + mutex_lock(&event->vif_event_lock); + armed = event->vif != NULL; + mutex_unlock(&event->vif_event_lock); + + return armed; +} +int brcmf_cfg80211_wait_vif_event_timeout(struct brcmf_cfg80211_info *cfg, + u8 action, ulong timeout) +{ + struct brcmf_cfg80211_vif_event *event = &cfg->vif_event; + + return wait_event_timeout(event->vif_wq, + vif_event_equals(event, action), timeout); +} + diff --git a/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.h b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.h new file mode 100644 index 00000000000..283c525a44f --- /dev/null +++ b/drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.h @@ -0,0 +1,493 @@ +/* + * Copyright (c) 2010 Broadcom Corporation + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef _wl_cfg80211_h_ +#define _wl_cfg80211_h_ + +/* for brcmu_d11inf */ +#include <brcmu_d11.h> + +#define WL_NUM_SCAN_MAX 10 +#define WL_NUM_PMKIDS_MAX MAXPMKID +#define WL_TLV_INFO_MAX 1024 +#define WL_BSS_INFO_MAX 2048 +#define WL_ASSOC_INFO_MAX 512 /* assoc related fil max buf */ +#define WL_EXTRA_BUF_MAX 2048 +#define WL_ROAM_TRIGGER_LEVEL -75 +#define WL_ROAM_DELTA 20 +#define WL_BEACON_TIMEOUT 3 + +#define WL_SCAN_CHANNEL_TIME 40 +#define WL_SCAN_UNASSOC_TIME 40 +#define WL_SCAN_PASSIVE_TIME 120 + +#define WL_ESCAN_BUF_SIZE (1024 * 64) +#define WL_ESCAN_TIMER_INTERVAL_MS 8000 /* E-Scan timeout */ + +#define WL_ESCAN_ACTION_START 1 +#define WL_ESCAN_ACTION_CONTINUE 2 +#define WL_ESCAN_ACTION_ABORT 3 + +#define WL_AUTH_SHARED_KEY 1 /* d11 shared authentication */ +#define IE_MAX_LEN 512 + +/* IE TLV processing */ +#define TLV_LEN_OFF 1 /* length offset */ +#define TLV_HDR_LEN 2 /* header length */ +#define TLV_BODY_OFF 2 /* body offset */ +#define TLV_OUI_LEN 3 /* oui id length */ + +/* 802.11 Mgmt Packet flags */ +#define BRCMF_VNDR_IE_BEACON_FLAG 0x1 +#define BRCMF_VNDR_IE_PRBRSP_FLAG 0x2 +#define BRCMF_VNDR_IE_ASSOCRSP_FLAG 0x4 +#define BRCMF_VNDR_IE_AUTHRSP_FLAG 0x8 +#define BRCMF_VNDR_IE_PRBREQ_FLAG 0x10 +#define BRCMF_VNDR_IE_ASSOCREQ_FLAG 0x20 +/* vendor IE in IW advertisement protocol ID field */ +#define BRCMF_VNDR_IE_IWAPID_FLAG 0x40 +/* allow custom IE id */ +#define BRCMF_VNDR_IE_CUSTOM_FLAG 0x100 + +/* P2P Action Frames flags (spec ordered) */ +#define BRCMF_VNDR_IE_GONREQ_FLAG 0x001000 +#define BRCMF_VNDR_IE_GONRSP_FLAG 0x002000 +#define BRCMF_VNDR_IE_GONCFM_FLAG 0x004000 +#define BRCMF_VNDR_IE_INVREQ_FLAG 0x008000 +#define BRCMF_VNDR_IE_INVRSP_FLAG 0x010000 +#define BRCMF_VNDR_IE_DISREQ_FLAG 0x020000 +#define BRCMF_VNDR_IE_DISRSP_FLAG 0x040000 +#define BRCMF_VNDR_IE_PRDREQ_FLAG 0x080000 +#define BRCMF_VNDR_IE_PRDRSP_FLAG 0x100000 + +#define BRCMF_VNDR_IE_P2PAF_SHIFT 12 + + +/** + * enum brcmf_scan_status - scan engine status + * + * @BRCMF_SCAN_STATUS_BUSY: scanning in progress on dongle. + * @BRCMF_SCAN_STATUS_ABORT: scan being aborted on dongle. + * @BRCMF_SCAN_STATUS_SUPPRESS: scanning is suppressed in driver. + */ +enum brcmf_scan_status { + BRCMF_SCAN_STATUS_BUSY, + BRCMF_SCAN_STATUS_ABORT, + BRCMF_SCAN_STATUS_SUPPRESS, +}; + +/* dongle configuration */ +struct brcmf_cfg80211_conf { + u32 frag_threshold; + u32 rts_threshold; + u32 retry_short; + u32 retry_long; + s32 tx_power; + struct ieee80211_channel channel; +}; + +/* basic structure of scan request */ +struct brcmf_cfg80211_scan_req { + struct brcmf_ssid_le ssid_le; +}; + +/* basic structure of information element */ +struct brcmf_cfg80211_ie { + u16 offset; + u8 buf[WL_TLV_INFO_MAX]; +}; + +/* security information with currently associated ap */ +struct brcmf_cfg80211_security { + u32 wpa_versions; + u32 auth_type; + u32 cipher_pairwise; + u32 cipher_group; + u32 wpa_auth; +}; + +/** + * struct brcmf_cfg80211_profile - profile information. + * + * @ssid: ssid of associated/associating ap. + * @bssid: bssid of joined/joining ibss. + * @sec: security information. + */ +struct brcmf_cfg80211_profile { + struct brcmf_ssid ssid; + u8 bssid[ETH_ALEN]; + struct brcmf_cfg80211_security sec; +}; + +/** + * enum brcmf_vif_status - bit indices for vif status. + * + * @BRCMF_VIF_STATUS_READY: ready for operation. + * @BRCMF_VIF_STATUS_CONNECTING: connect/join in progress. + * @BRCMF_VIF_STATUS_CONNECTED: connected/joined succesfully. + * @BRCMF_VIF_STATUS_DISCONNECTING: disconnect/disable in progress. + * @BRCMF_VIF_STATUS_AP_CREATING: interface configured for AP operation. + * @BRCMF_VIF_STATUS_AP_CREATED: AP operation started. + */ +enum brcmf_vif_status { + BRCMF_VIF_STATUS_READY, + BRCMF_VIF_STATUS_CONNECTING, + BRCMF_VIF_STATUS_CONNECTED, + BRCMF_VIF_STATUS_DISCONNECTING, + BRCMF_VIF_STATUS_AP_CREATING, + BRCMF_VIF_STATUS_AP_CREATED +}; + +/** + * struct vif_saved_ie - holds saved IEs for a virtual interface. + * + * @probe_req_ie: IE info for probe request. + * @probe_res_ie: IE info for probe response. + * @beacon_ie: IE info for beacon frame. + * @probe_req_ie_len: IE info length for probe request. + * @probe_res_ie_len: IE info length for probe response. + * @beacon_ie_len: IE info length for beacon frame. + */ +struct vif_saved_ie { + u8 probe_req_ie[IE_MAX_LEN]; + u8 probe_res_ie[IE_MAX_LEN]; + u8 beacon_ie[IE_MAX_LEN]; + u8 assoc_req_ie[IE_MAX_LEN]; + u32 probe_req_ie_len; + u32 probe_res_ie_len; + u32 beacon_ie_len; + u32 assoc_req_ie_len; +}; + +/** + * struct brcmf_cfg80211_vif - virtual interface specific information. + * + * @ifp: lower layer interface pointer + * @wdev: wireless device. + * @profile: profile information. + * @roam_off: roaming state. + * @sme_state: SME state using enum brcmf_vif_status bits. + * @pm_block: power-management blocked. + * @list: linked list. + * @mgmt_rx_reg: registered rx mgmt frame types. + */ +struct brcmf_cfg80211_vif { + struct brcmf_if *ifp; + struct wireless_dev wdev; + struct brcmf_cfg80211_profile profile; + s32 roam_off; + unsigned long sme_state; + bool pm_block; + struct vif_saved_ie saved_ie; + struct list_head list; + u16 mgmt_rx_reg; +}; + +/* association inform */ +struct brcmf_cfg80211_connect_info { + u8 *req_ie; + s32 req_ie_len; + u8 *resp_ie; + s32 resp_ie_len; +}; + +/* assoc ie length */ +struct brcmf_cfg80211_assoc_ielen_le { + __le32 req_len; + __le32 resp_len; +}; + +/* wpa2 pmk list */ +struct brcmf_cfg80211_pmk_list { + struct pmkid_list pmkids; + struct pmkid foo[MAXPMKID - 1]; +}; + +/* dongle escan state */ +enum wl_escan_state { + WL_ESCAN_STATE_IDLE, + WL_ESCAN_STATE_SCANNING +}; + +struct escan_info { + u32 escan_state; + u8 escan_buf[WL_ESCAN_BUF_SIZE]; + struct wiphy *wiphy; + struct brcmf_if *ifp; + s32 (*run)(struct brcmf_cfg80211_info *cfg, struct brcmf_if *ifp, + struct cfg80211_scan_request *request, u16 action); +}; + +/** + * struct brcmf_pno_param_le - PNO scan configuration parameters + * + * @version: PNO parameters version. + * @scan_freq: scan frequency. + * @lost_network_timeout: #sec. to declare discovered network as lost. + * @flags: Bit field to control features of PFN such as sort criteria auto + * enable switch and background scan. + * @rssi_margin: Margin to avoid jitter for choosing a PFN based on RSSI sort + * criteria. + * @bestn: number of best networks in each scan. + * @mscan: number of scans recorded. + * @repeat: minimum number of scan intervals before scan frequency changes + * in adaptive scan. + * @exp: exponent of 2 for maximum scan interval. + * @slow_freq: slow scan period. + */ +struct brcmf_pno_param_le { + __le32 version; + __le32 scan_freq; + __le32 lost_network_timeout; + __le16 flags; + __le16 rssi_margin; + u8 bestn; + u8 mscan; + u8 repeat; + u8 exp; + __le32 slow_freq; +}; + +/** + * struct brcmf_pno_net_param_le - scan parameters per preferred network. + * + * @ssid: ssid name and its length. + * @flags: bit2: hidden. + * @infra: BSS vs IBSS. + * @auth: Open vs Closed. + * @wpa_auth: WPA type. + * @wsec: wsec value. + */ +struct brcmf_pno_net_param_le { + struct brcmf_ssid_le ssid; + __le32 flags; + __le32 infra; + __le32 auth; + __le32 wpa_auth; + __le32 wsec; +}; + +/** + * struct brcmf_pno_net_info_le - information per found network. + * + * @bssid: BSS network identifier. + * @channel: channel number only. + * @SSID_len: length of ssid. + * @SSID: ssid characters. + * @RSSI: receive signal strength (in dBm). + * @timestamp: age in seconds. + */ +struct brcmf_pno_net_info_le { + u8 bssid[ETH_ALEN]; + u8 channel; + u8 SSID_len; + u8 SSID[32]; + __le16 RSSI; + __le16 timestamp; +}; + +/** + * struct brcmf_pno_scanresults_le - result returned in PNO NET FOUND event. + * + * @version: PNO version identifier. + * @status: indicates completion status of PNO scan. + * @count: amount of brcmf_pno_net_info_le entries appended. + */ +struct brcmf_pno_scanresults_le { + __le32 version; + __le32 status; + __le32 count; +}; + +/** + * struct brcmf_cfg80211_vif_event - virtual interface event information. + * + * @vif_wq: waitqueue awaiting interface event from firmware. + * @vif_event_lock: protects other members in this structure. + * @vif_complete: completion for net attach. + * @action: either add, change, or delete. + * @vif: virtual interface object related to the event. + */ +struct brcmf_cfg80211_vif_event { + wait_queue_head_t vif_wq; + struct mutex vif_event_lock; + u8 action; + struct brcmf_cfg80211_vif *vif; +}; + +/** + * struct brcmf_cfg80211_info - dongle private data of cfg80211 interface + * + * @wiphy: wiphy object for cfg80211 interface. + * @conf: dongle configuration. + * @p2p: peer-to-peer specific information. + * @btcoex: Bluetooth coexistence information. + * @scan_request: cfg80211 scan request object. + * @usr_sync: mainly for dongle up/down synchronization. + * @bss_list: bss_list holding scanned ap information. + * @scan_req_int: internal scan request object. + * @bss_info: bss information for cfg80211 layer. + * @ie: information element object for internal purpose. + * @conn_info: association info. + * @pmk_list: wpa2 pmk list. + * @scan_status: scan activity on the dongle. + * @pub: common driver information. + * @channel: current channel. + * @active_scan: current scan mode. + * @sched_escan: e-scan for scheduled scan support running. + * @ibss_starter: indicates this sta is ibss starter. + * @pwr_save: indicate whether dongle to support power save mode. + * @dongle_up: indicate whether dongle up or not. + * @roam_on: on/off switch for dongle self-roaming. + * @scan_tried: indicates if first scan attempted. + * @dcmd_buf: dcmd buffer. + * @extra_buf: mainly to grab assoc information. + * @debugfsdir: debugfs folder for this device. + * @escan_info: escan information. + * @escan_timeout: Timer for catch scan timeout. + * @escan_timeout_work: scan timeout worker. + * @escan_ioctl_buf: dongle command buffer for escan commands. + * @vif_list: linked list of vif instances. + * @vif_cnt: number of vif instances. + * @vif_event: vif event signalling. + */ +struct brcmf_cfg80211_info { + struct wiphy *wiphy; + struct brcmf_cfg80211_conf *conf; + struct brcmf_p2p_info p2p; + struct brcmf_btcoex_info *btcoex; + struct cfg80211_scan_request *scan_request; + struct mutex usr_sync; + struct brcmf_scan_results *bss_list; + struct brcmf_cfg80211_scan_req scan_req_int; + struct wl_cfg80211_bss_info *bss_info; + struct brcmf_cfg80211_ie ie; + struct brcmf_cfg80211_connect_info conn_info; + struct brcmf_cfg80211_pmk_list *pmk_list; + unsigned long scan_status; + struct brcmf_pub *pub; + u32 channel; + bool active_scan; + bool sched_escan; + bool ibss_starter; + bool pwr_save; + bool dongle_up; + bool scan_tried; + u8 *dcmd_buf; + u8 *extra_buf; + struct dentry *debugfsdir; + struct escan_info escan_info; + struct timer_list escan_timeout; + struct work_struct escan_timeout_work; + u8 *escan_ioctl_buf; + struct list_head vif_list; + struct brcmf_cfg80211_vif_event vif_event; + struct completion vif_disabled; + struct brcmu_d11inf d11inf; +}; + +/** + * struct brcmf_tlv - tag_ID/length/value_buffer tuple. + * + * @id: tag identifier. + * @len: number of bytes in value buffer. + * @data: value buffer. + */ +struct brcmf_tlv { + u8 id; + u8 len; + u8 data[1]; +}; + +static inline struct wiphy *cfg_to_wiphy(struct brcmf_cfg80211_info *cfg) +{ + return cfg->wiphy; +} + +static inline struct brcmf_cfg80211_info *wiphy_to_cfg(struct wiphy *w) +{ + return (struct brcmf_cfg80211_info *)(wiphy_priv(w)); +} + +static inline struct brcmf_cfg80211_info *wdev_to_cfg(struct wireless_dev *wd) +{ + return (struct brcmf_cfg80211_info *)(wdev_priv(wd)); +} + +static inline +struct net_device *cfg_to_ndev(struct brcmf_cfg80211_info *cfg) +{ + struct brcmf_cfg80211_vif *vif; + vif = list_first_entry(&cfg->vif_list, struct brcmf_cfg80211_vif, list); + return vif->wdev.netdev; +} + +static inline struct brcmf_cfg80211_info *ndev_to_cfg(struct net_device *ndev) +{ + return wdev_to_cfg(ndev->ieee80211_ptr); +} + +static inline struct brcmf_cfg80211_profile *ndev_to_prof(struct net_device *nd) +{ + struct brcmf_if *ifp = netdev_priv(nd); + return &ifp->vif->profile; +} + +static inline struct brcmf_cfg80211_vif *ndev_to_vif(struct net_device *ndev) +{ + struct brcmf_if *ifp = netdev_priv(ndev); + return ifp->vif; +} + +static inline struct +brcmf_cfg80211_connect_info *cfg_to_conn(struct brcmf_cfg80211_info *cfg) +{ + return &cfg->conn_info; +} + +struct brcmf_cfg80211_info *brcmf_cfg80211_attach(struct brcmf_pub *drvr, + struct device *busdev); +void brcmf_cfg80211_detach(struct brcmf_cfg80211_info *cfg); +s32 brcmf_cfg80211_up(struct net_device *ndev); +s32 brcmf_cfg80211_down(struct net_device *ndev); +enum nl80211_iftype brcmf_cfg80211_get_iftype(struct brcmf_if *ifp); + +struct brcmf_cfg80211_vif *brcmf_alloc_vif(struct brcmf_cfg80211_info *cfg, + enum nl80211_iftype type, + bool pm_block); +void brcmf_free_vif(struct brcmf_cfg80211_vif *vif); + +s32 brcmf_vif_set_mgmt_ie(struct brcmf_cfg80211_vif *vif, s32 pktflag, + const u8 *vndr_ie_buf, u32 vndr_ie_len); +s32 brcmf_vif_clear_mgmt_ies(struct brcmf_cfg80211_vif *vif); +const struct brcmf_tlv * +brcmf_parse_tlvs(const void *buf, int buflen, uint key); +u16 channel_to_chanspec(struct brcmu_d11inf *d11inf, + struct ieee80211_channel *ch); +u32 wl_get_vif_state_all(struct brcmf_cfg80211_info *cfg, unsigned long state); +void brcmf_cfg80211_arm_vif_event(struct brcmf_cfg80211_info *cfg, + struct brcmf_cfg80211_vif *vif); +bool brcmf_cfg80211_vif_event_armed(struct brcmf_cfg80211_info *cfg); +int brcmf_cfg80211_wait_vif_event_timeout(struct brcmf_cfg80211_info *cfg, + u8 action, ulong timeout); +s32 brcmf_notify_escan_complete(struct brcmf_cfg80211_info *cfg, + struct brcmf_if *ifp, bool aborted, + bool fw_abort); +void brcmf_set_mpc(struct brcmf_if *ndev, int mpc); +void brcmf_abort_scanning(struct brcmf_cfg80211_info *cfg); +void brcmf_cfg80211_free_netdev(struct net_device *ndev); + +#endif /* _wl_cfg80211_h_ */ |