diff options
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c')
| -rw-r--r-- | drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c | 1213 |
1 files changed, 937 insertions, 276 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c index be35a2f99b1..a16e644e7c0 100644 --- a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c +++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c @@ -15,18 +15,25 @@ */ /* ****************** SDIO CARD Interface Functions **************************/ -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - #include <linux/types.h> #include <linux/netdevice.h> -#include <linux/export.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> @@ -39,16 +46,28 @@ #define SDIOH_API_ACCESS_RETRY_LIMIT 2 -#ifdef CONFIG_BRCMFMAC_SDIO_OOB -static irqreturn_t brcmf_sdio_irqhandler(int irq, void *dev_id) +#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"); + brcmf_dbg(INTR, "OOB intr triggered\n"); - /* - * out-of-band interrupt is level-triggered which won't + /* out-of-band interrupt is level-triggered which won't * be cleared until dpc */ if (sdiodev->irq_en) { @@ -56,134 +75,276 @@ static irqreturn_t brcmf_sdio_irqhandler(int irq, void *dev_id) sdiodev->irq_en = false; } - brcmf_sdbrcm_isr(sdiodev->bus); + brcmf_sdio_isr(sdiodev->bus); return IRQ_HANDLED; } -int brcmf_sdio_intr_register(struct brcmf_sdio_dev *sdiodev) +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; - brcmf_dbg(TRACE, "Entering: irq %d\n", sdiodev->irq); - - ret = request_irq(sdiodev->irq, brcmf_sdio_irqhandler, - sdiodev->irq_flags, "brcmf_oob_intr", - &sdiodev->func[1]->dev); - if (ret != 0) - return ret; - 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->irq); - if (ret != 0) - return ret; - sdiodev->irq_wake = true; + 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]); + sdio_claim_host(sdiodev->func[1]); - /* must configure SDIO_CCCR_IENx to enable irq */ - data = brcmf_sdio_regrb(sdiodev, SDIO_CCCR_IENx, &ret); - data |= 1 << SDIO_FUNC_1 | 1 << SDIO_FUNC_2 | 1; - brcmf_sdio_regwb(sdiodev, SDIO_CCCR_IENx, data, &ret); + /* 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->irq_flags & IRQF_TRIGGER_HIGH) - data |= SDIO_SEPINT_ACT_HI; - brcmf_sdio_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 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]); + 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_sdio_intr_unregister(struct brcmf_sdio_dev *sdiodev) +int brcmf_sdiod_intr_unregister(struct brcmf_sdio_dev *sdiodev) { - brcmf_dbg(TRACE, "Entering\n"); - - sdio_claim_host(sdiodev->func[1]); - brcmf_sdio_regwb(sdiodev, SDIO_CCCR_BRCM_SEPINT, 0, NULL); - brcmf_sdio_regwb(sdiodev, SDIO_CCCR_IENx, 0, NULL); - sdio_release_host(sdiodev->func[1]); - - if (sdiodev->irq_wake) { - disable_irq_wake(sdiodev->irq); - sdiodev->irq_wake = false; + 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]); } - free_irq(sdiodev->irq, &sdiodev->func[1]->dev); - sdiodev->irq_en = false; return 0; } -#else /* CONFIG_BRCMFMAC_SDIO_OOB */ -static void brcmf_sdio_irqhandler(struct sdio_func *func) + +static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func, + uint regaddr, u8 byte) { - struct brcmf_bus *bus_if = dev_get_drvdata(&func->dev); - struct brcmf_sdio_dev *sdiodev = bus_if->bus_priv.sdio; + int err_ret; - brcmf_dbg(INTR, "ib intr triggered\n"); + /* + * 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); - brcmf_sdbrcm_isr(sdiodev->bus); + return err_ret; } -/* dummy handler for SDIO function 2 interrupt */ -static void brcmf_sdio_dummy_irqhandler(struct sdio_func *func) +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; -int brcmf_sdio_intr_register(struct brcmf_sdio_dev *sdiodev) -{ - brcmf_dbg(TRACE, "Entering\n"); + brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n", + write, fn, addr, regsz); - sdio_claim_host(sdiodev->func[1]); - sdio_claim_irq(sdiodev->func[1], brcmf_sdio_irqhandler); - sdio_claim_irq(sdiodev->func[2], brcmf_sdio_dummy_irqhandler); - sdio_release_host(sdiodev->func[1]); + brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_word_wait); + if (brcmf_sdiod_pm_resume_error(sdiodev)) + return -EIO; - return 0; + /* 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; } -int brcmf_sdio_intr_unregister(struct brcmf_sdio_dev *sdiodev) +static int brcmf_sdiod_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr, + u8 regsz, void *data, bool write) { - brcmf_dbg(TRACE, "Entering\n"); + u8 func; + s32 retry = 0; + int ret; - sdio_claim_host(sdiodev->func[1]); - sdio_release_irq(sdiodev->func[2]); - sdio_release_irq(sdiodev->func[1]); - sdio_release_host(sdiodev->func[1]); + if (sdiodev->bus_if->state == BRCMF_BUS_NOMEDIUM) + return -ENOMEDIUM; - return 0; + /* + * 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; } -#endif /* CONFIG_BRCMFMAC_SDIO_OOB */ -int -brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address) +static int +brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address) { int err = 0, i; u8 addr[3]; - s32 retry; + + 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++) { - retry = 0; - do { - if (retry) - usleep_range(1000, 2000); - err = brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, - SDIO_FUNC_1, SBSDIO_FUNC1_SBADDRLOW + i, - &addr[i]); - } while (err != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT); - + 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", + brcmf_err("failed at addr: 0x%0x\n", SBSDIO_FUNC1_SBADDRLOW + i); break; } @@ -192,72 +353,37 @@ brcmf_sdcard_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address) return err; } -int -brcmf_sdio_regrw_helper(struct brcmf_sdio_dev *sdiodev, u32 addr, - void *data, bool write) +static int +brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, uint width, u32 *addr) { - u8 func_num, reg_size; - u32 bar; - s32 retry = 0; - int ret; + uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK; + int err = 0; - /* - * 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_num = SDIO_FUNC_0; - reg_size = 1; - } else if ((addr & ~REG_F1_MISC_MASK) == 0) { - func_num = SDIO_FUNC_1; - reg_size = 1; - } else { - func_num = SDIO_FUNC_1; - reg_size = 4; - - /* Set the window for SB core register */ - bar = addr & ~SBSDIO_SB_OFT_ADDR_MASK; - if (bar != sdiodev->sbwad) { - ret = brcmf_sdcard_set_sbaddr_window(sdiodev, bar); - if (ret != 0) { - memset(data, 0xFF, reg_size); - return ret; - } - sdiodev->sbwad = bar; - } - addr &= SBSDIO_SB_OFT_ADDR_MASK; - addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; + if (bar0 != sdiodev->sbwad) { + err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0); + if (err) + return err; + + sdiodev->sbwad = bar0; } - do { - if (!write) - memset(data, 0, reg_size); - if (retry) /* wait for 1 ms till bus get settled down */ - usleep_range(1000, 2000); - if (reg_size == 1) - ret = brcmf_sdioh_request_byte(sdiodev, write, - func_num, addr, data); - else - ret = brcmf_sdioh_request_word(sdiodev, write, - func_num, addr, data, 4); - } while (ret != 0 && retry++ < SDIOH_API_ACCESS_RETRY_LIMIT); + *addr &= SBSDIO_SB_OFT_ADDR_MASK; - if (ret != 0) - brcmf_err("failed with %d\n", ret); + if (width == 4) + *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; - return ret; + return 0; } -u8 brcmf_sdio_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) +u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) { u8 data; int retval; - brcmf_dbg(INFO, "addr:0x%08x\n", addr); - retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false); - brcmf_dbg(INFO, "data:0x%02x\n", data); + 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; @@ -265,74 +391,263 @@ u8 brcmf_sdio_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) return data; } -u32 brcmf_sdio_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) +u32 brcmf_sdiod_regrl(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret) { u32 data; int retval; - brcmf_dbg(INFO, "addr:0x%08x\n", addr); - retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, false); - brcmf_dbg(INFO, "data:0x%08x\n", data); + 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_sdio_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr, +void brcmf_sdiod_regwb(struct brcmf_sdio_dev *sdiodev, u32 addr, u8 data, int *ret) { int retval; - brcmf_dbg(INFO, "addr:0x%08x, data:0x%02x\n", addr, data); - retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true); - + 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_sdio_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr, +void brcmf_sdiod_regwl(struct brcmf_sdio_dev *sdiodev, u32 addr, u32 data, int *ret) { int retval; - brcmf_dbg(INFO, "addr:0x%08x, data:0x%08x\n", addr, data); - retval = brcmf_sdio_regrw_helper(sdiodev, addr, &data, true); + 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_sdcard_recv_prepare(struct brcmf_sdio_dev *sdiodev, uint fn, - uint flags, uint width, u32 *addr) +static int brcmf_sdiod_buffrw(struct brcmf_sdio_dev *sdiodev, uint fn, + bool write, u32 addr, struct sk_buff *pkt) { - uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK; - int err = 0; + unsigned int req_sz; + int err; - /* Async not implemented yet */ - if (flags & SDIO_REQ_ASYNC) - return -ENOTSUPP; + brcmf_sdiod_pm_resume_wait(sdiodev, &sdiodev->request_buffer_wait); + if (brcmf_sdiod_pm_resume_error(sdiodev)) + return -EIO; - if (bar0 != sdiodev->sbwad) { - err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0); - if (err) - return err; + /* Single skb use the standard mmc interface */ + req_sz = pkt->len + 3; + req_sz &= (uint)~3; - sdiodev->sbwad = bar0; + 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; } - *addr &= SBSDIO_SB_OFT_ADDR_MASK; + 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 (width == 4) - *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; + if (req_sz >= max_req_sz || sg_cnt >= max_seg_cnt) + break; + } + seg_sz -= sg_cnt; - return 0; + 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_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, - uint flags, u8 *buf, uint nbytes) +int brcmf_sdiod_recv_buf(struct brcmf_sdio_dev *sdiodev, u8 *buf, uint nbytes) { struct sk_buff *mypkt; int err; @@ -344,7 +659,7 @@ brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, return -EIO; } - err = brcmf_sdcard_recv_pkt(sdiodev, addr, fn, flags, mypkt); + err = brcmf_sdiod_recv_pkt(sdiodev, mypkt); if (!err) memcpy(buf, mypkt->data, nbytes); @@ -352,58 +667,66 @@ brcmf_sdcard_recv_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, return err; } -int -brcmf_sdcard_recv_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, - uint flags, struct sk_buff *pkt) +int brcmf_sdiod_recv_pkt(struct brcmf_sdio_dev *sdiodev, struct sk_buff *pkt) { - uint incr_fix; - uint width; + u32 addr = sdiodev->sbwad; int err = 0; - brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n", - fn, addr, pkt->len); + brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", addr, pkt->len); - width = (flags & SDIO_REQ_4BYTE) ? 4 : 2; - err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr); + err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); if (err) goto done; - incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC; - err = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_READ, - fn, addr, pkt); + err = brcmf_sdiod_buffrw(sdiodev, SDIO_FUNC_2, false, addr, pkt); done: return err; } -int brcmf_sdcard_recv_chain(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, - uint flags, struct sk_buff_head *pktq) +int brcmf_sdiod_recv_chain(struct brcmf_sdio_dev *sdiodev, + struct sk_buff_head *pktq, uint totlen) { - uint incr_fix; - uint width; + struct sk_buff *glom_skb; + struct sk_buff *skb; + u32 addr = sdiodev->sbwad; int err = 0; - brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n", - fn, addr, pktq->qlen); + brcmf_dbg(SDIO, "addr = 0x%x, size = %d\n", + addr, pktq->qlen); - width = (flags & SDIO_REQ_4BYTE) ? 4 : 2; - err = brcmf_sdcard_recv_prepare(sdiodev, fn, flags, width, &addr); + err = brcmf_sdiod_addrprep(sdiodev, 4, &addr); if (err) goto done; - incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC; - err = brcmf_sdioh_request_chain(sdiodev, incr_fix, SDIOH_READ, fn, addr, - pktq); + 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_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, - uint flags, u8 *buf, uint nbytes) +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); @@ -414,144 +737,482 @@ brcmf_sdcard_send_buf(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, } memcpy(mypkt->data, buf, nbytes); - err = brcmf_sdcard_send_pkt(sdiodev, addr, fn, flags, mypkt); + + 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_sdcard_send_pkt(struct brcmf_sdio_dev *sdiodev, u32 addr, uint fn, - uint flags, struct sk_buff *pkt) +brcmf_sdiod_ramrw(struct brcmf_sdio_dev *sdiodev, bool write, u32 address, + u8 *data, uint size) { - uint incr_fix; - uint width; - uint bar0 = addr & ~SBSDIO_SB_OFT_ADDR_MASK; - int err = 0; + 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; - brcmf_dbg(INFO, "fun = %d, addr = 0x%x, size = %d\n", - fn, addr, pkt->len); + /* 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; - /* Async not implemented yet */ - if (flags & SDIO_REQ_ASYNC) - return -ENOTSUPP; + sdio_claim_host(sdiodev->func[1]); - if (bar0 != sdiodev->sbwad) { - err = brcmf_sdcard_set_sbaddr_window(sdiodev, bar0); - if (err) - goto done; + /* 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; - sdiodev->sbwad = bar0; + 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); + } } - addr &= SBSDIO_SB_OFT_ADDR_MASK; + dev_kfree_skb(pkt); - incr_fix = (flags & SDIO_REQ_FIXED) ? SDIOH_DATA_FIX : SDIOH_DATA_INC; - width = (flags & SDIO_REQ_4BYTE) ? 4 : 2; - if (width == 4) - addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; + /* 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); - err = brcmf_sdioh_request_buffer(sdiodev, incr_fix, SDIOH_WRITE, fn, - addr, pkt); + sdio_release_host(sdiodev->func[1]); -done: - return err; + return bcmerror; } -int brcmf_sdcard_rwdata(struct brcmf_sdio_dev *sdiodev, uint rw, u32 addr, - u8 *buf, uint nbytes) +int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn) { - struct sk_buff *mypkt; - bool write = rw ? SDIOH_WRITE : SDIOH_READ; - int err; + char t_func = (char)fn; + brcmf_dbg(SDIO, "Enter\n"); - addr &= SBSDIO_SB_OFT_ADDR_MASK; - addr |= SBSDIO_SB_ACCESS_2_4B_FLAG; + /* issue abort cmd52 command through F0 */ + brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT, + sizeof(t_func), &t_func, true); - mypkt = brcmu_pkt_buf_get_skb(nbytes); - if (!mypkt) { - brcmf_err("brcmu_pkt_buf_get_skb failed: len %d\n", - nbytes); - return -EIO; - } + brcmf_dbg(SDIO, "Exit\n"); + return 0; +} - /* For a write, copy the buffer data into the packet. */ - if (write) - memcpy(mypkt->data, buf, nbytes); +static void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev) +{ + uint nents; + int err; - err = brcmf_sdioh_request_buffer(sdiodev, SDIOH_DATA_INC, write, - SDIO_FUNC_1, addr, mypkt); + if (!sdiodev->sg_support) + return; - /* For a read, copy the packet data back to the buffer. */ - if (!err && !write) - memcpy(buf, mypkt->data, nbytes); + nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE, brcmf_sdiod_txglomsz); + nents += (nents >> 4) + 1; - brcmu_pkt_buf_free_skb(mypkt); - return err; + 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; } -int brcmf_sdcard_abort(struct brcmf_sdio_dev *sdiodev, uint fn) +static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev) { - char t_func = (char)fn; - brcmf_dbg(TRACE, "Enter\n"); + if (sdiodev->bus) { + brcmf_sdio_remove(sdiodev->bus); + sdiodev->bus = NULL; + } - /* issue abort cmd52 command through F0 */ - brcmf_sdioh_request_byte(sdiodev, SDIOH_WRITE, SDIO_FUNC_0, - SDIO_CCCR_ABORT, &t_func); + /* 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; - brcmf_dbg(TRACE, "Exit\n"); return 0; } -int brcmf_sdio_probe(struct brcmf_sdio_dev *sdiodev) +static int brcmf_sdiod_probe(struct brcmf_sdio_dev *sdiodev) { - u32 regs = 0; + struct sdio_func *func; + struct mmc_host *host; + uint max_blocks; int ret = 0; - ret = brcmf_sdioh_attach(sdiodev); - if (ret) + 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; + } - regs = SI_ENUM_BASE; + /* + * 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_sdbrcm_probe(regs, sdiodev); + sdiodev->bus = brcmf_sdio_probe(sdiodev); if (!sdiodev->bus) { - brcmf_err("device attach failed\n"); ret = -ENODEV; goto out; } out: if (ret) - brcmf_sdio_remove(sdiodev); + brcmf_sdiod_remove(sdiodev); return ret; } -EXPORT_SYMBOL(brcmf_sdio_probe); -int brcmf_sdio_remove(struct brcmf_sdio_dev *sdiodev) +/* 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) { - sdiodev->bus_if->state = BRCMF_BUS_DOWN; + 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; + } - if (sdiodev->bus) { - brcmf_sdbrcm_disconnect(sdiodev->bus); - sdiodev->bus = NULL; + /* 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_sdioh_detach(sdiodev); + brcmf_dbg(SDIO, "F2 init completed...\n"); + return 0; - sdiodev->sbwad = 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; } -EXPORT_SYMBOL(brcmf_sdio_remove); -void brcmf_sdio_wdtmr_enable(struct brcmf_sdio_dev *sdiodev, bool enable) +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) { - if (enable) - brcmf_sdbrcm_wd_timer(sdiodev->bus, BRCMF_WD_POLL_MS); + 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 - brcmf_sdbrcm_wd_timer(sdiodev->bus, 0); + 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"); } |