diff options
Diffstat (limited to 'drivers/net/sfc/mcdi.c')
| -rw-r--r-- | drivers/net/sfc/mcdi.c | 1200 |
1 files changed, 0 insertions, 1200 deletions
diff --git a/drivers/net/sfc/mcdi.c b/drivers/net/sfc/mcdi.c deleted file mode 100644 index b716e827b29..00000000000 --- a/drivers/net/sfc/mcdi.c +++ /dev/null @@ -1,1200 +0,0 @@ -/**************************************************************************** - * Driver for Solarflare Solarstorm network controllers and boards - * Copyright 2008-2009 Solarflare Communications Inc. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation, incorporated herein by reference. - */ - -#include <linux/delay.h> -#include "net_driver.h" -#include "nic.h" -#include "io.h" -#include "regs.h" -#include "mcdi_pcol.h" -#include "phy.h" - -/************************************************************************** - * - * Management-Controller-to-Driver Interface - * - ************************************************************************** - */ - -/* Software-defined structure to the shared-memory */ -#define CMD_NOTIFY_PORT0 0 -#define CMD_NOTIFY_PORT1 4 -#define CMD_PDU_PORT0 0x008 -#define CMD_PDU_PORT1 0x108 -#define REBOOT_FLAG_PORT0 0x3f8 -#define REBOOT_FLAG_PORT1 0x3fc - -#define MCDI_RPC_TIMEOUT 10 /*seconds */ - -#define MCDI_PDU(efx) \ - (efx_port_num(efx) ? CMD_PDU_PORT1 : CMD_PDU_PORT0) -#define MCDI_DOORBELL(efx) \ - (efx_port_num(efx) ? CMD_NOTIFY_PORT1 : CMD_NOTIFY_PORT0) -#define MCDI_REBOOT_FLAG(efx) \ - (efx_port_num(efx) ? REBOOT_FLAG_PORT1 : REBOOT_FLAG_PORT0) - -#define SEQ_MASK \ - EFX_MASK32(EFX_WIDTH(MCDI_HEADER_SEQ)) - -static inline struct efx_mcdi_iface *efx_mcdi(struct efx_nic *efx) -{ - struct siena_nic_data *nic_data; - EFX_BUG_ON_PARANOID(efx_nic_rev(efx) < EFX_REV_SIENA_A0); - nic_data = efx->nic_data; - return &nic_data->mcdi; -} - -void efx_mcdi_init(struct efx_nic *efx) -{ - struct efx_mcdi_iface *mcdi; - - if (efx_nic_rev(efx) < EFX_REV_SIENA_A0) - return; - - mcdi = efx_mcdi(efx); - init_waitqueue_head(&mcdi->wq); - spin_lock_init(&mcdi->iface_lock); - atomic_set(&mcdi->state, MCDI_STATE_QUIESCENT); - mcdi->mode = MCDI_MODE_POLL; - - (void) efx_mcdi_poll_reboot(efx); -} - -static void efx_mcdi_copyin(struct efx_nic *efx, unsigned cmd, - const u8 *inbuf, size_t inlen) -{ - struct efx_mcdi_iface *mcdi = efx_mcdi(efx); - unsigned pdu = FR_CZ_MC_TREG_SMEM + MCDI_PDU(efx); - unsigned doorbell = FR_CZ_MC_TREG_SMEM + MCDI_DOORBELL(efx); - unsigned int i; - efx_dword_t hdr; - u32 xflags, seqno; - - BUG_ON(atomic_read(&mcdi->state) == MCDI_STATE_QUIESCENT); - BUG_ON(inlen & 3 || inlen >= 0x100); - - seqno = mcdi->seqno & SEQ_MASK; - xflags = 0; - if (mcdi->mode == MCDI_MODE_EVENTS) - xflags |= MCDI_HEADER_XFLAGS_EVREQ; - - EFX_POPULATE_DWORD_6(hdr, - MCDI_HEADER_RESPONSE, 0, - MCDI_HEADER_RESYNC, 1, - MCDI_HEADER_CODE, cmd, - MCDI_HEADER_DATALEN, inlen, - MCDI_HEADER_SEQ, seqno, - MCDI_HEADER_XFLAGS, xflags); - - efx_writed(efx, &hdr, pdu); - - for (i = 0; i < inlen; i += 4) - _efx_writed(efx, *((__le32 *)(inbuf + i)), pdu + 4 + i); - - /* Ensure the payload is written out before the header */ - wmb(); - - /* ring the doorbell with a distinctive value */ - _efx_writed(efx, (__force __le32) 0x45789abc, doorbell); -} - -static void efx_mcdi_copyout(struct efx_nic *efx, u8 *outbuf, size_t outlen) -{ - struct efx_mcdi_iface *mcdi = efx_mcdi(efx); - unsigned int pdu = FR_CZ_MC_TREG_SMEM + MCDI_PDU(efx); - int i; - - BUG_ON(atomic_read(&mcdi->state) == MCDI_STATE_QUIESCENT); - BUG_ON(outlen & 3 || outlen >= 0x100); - - for (i = 0; i < outlen; i += 4) - *((__le32 *)(outbuf + i)) = _efx_readd(efx, pdu + 4 + i); -} - -static int efx_mcdi_poll(struct efx_nic *efx) -{ - struct efx_mcdi_iface *mcdi = efx_mcdi(efx); - unsigned int time, finish; - unsigned int respseq, respcmd, error; - unsigned int pdu = FR_CZ_MC_TREG_SMEM + MCDI_PDU(efx); - unsigned int rc, spins; - efx_dword_t reg; - - /* Check for a reboot atomically with respect to efx_mcdi_copyout() */ - rc = -efx_mcdi_poll_reboot(efx); - if (rc) - goto out; - - /* Poll for completion. Poll quickly (once a us) for the 1st jiffy, - * because generally mcdi responses are fast. After that, back off - * and poll once a jiffy (approximately) - */ - spins = TICK_USEC; - finish = get_seconds() + MCDI_RPC_TIMEOUT; - - while (1) { - if (spins != 0) { - --spins; - udelay(1); - } else { - schedule_timeout_uninterruptible(1); - } - - time = get_seconds(); - - rmb(); - efx_readd(efx, ®, pdu); - - /* All 1's indicates that shared memory is in reset (and is - * not a valid header). Wait for it to come out reset before - * completing the command */ - if (EFX_DWORD_FIELD(reg, EFX_DWORD_0) != 0xffffffff && - EFX_DWORD_FIELD(reg, MCDI_HEADER_RESPONSE)) - break; - - if (time >= finish) - return -ETIMEDOUT; - } - - mcdi->resplen = EFX_DWORD_FIELD(reg, MCDI_HEADER_DATALEN); - respseq = EFX_DWORD_FIELD(reg, MCDI_HEADER_SEQ); - respcmd = EFX_DWORD_FIELD(reg, MCDI_HEADER_CODE); - error = EFX_DWORD_FIELD(reg, MCDI_HEADER_ERROR); - - if (error && mcdi->resplen == 0) { - netif_err(efx, hw, efx->net_dev, "MC rebooted\n"); - rc = EIO; - } else if ((respseq ^ mcdi->seqno) & SEQ_MASK) { - netif_err(efx, hw, efx->net_dev, - "MC response mismatch tx seq 0x%x rx seq 0x%x\n", - respseq, mcdi->seqno); - rc = EIO; - } else if (error) { - efx_readd(efx, ®, pdu + 4); - switch (EFX_DWORD_FIELD(reg, EFX_DWORD_0)) { -#define TRANSLATE_ERROR(name) \ - case MC_CMD_ERR_ ## name: \ - rc = name; \ - break - TRANSLATE_ERROR(ENOENT); - TRANSLATE_ERROR(EINTR); - TRANSLATE_ERROR(EACCES); - TRANSLATE_ERROR(EBUSY); - TRANSLATE_ERROR(EINVAL); - TRANSLATE_ERROR(EDEADLK); - TRANSLATE_ERROR(ENOSYS); - TRANSLATE_ERROR(ETIME); -#undef TRANSLATE_ERROR - default: - rc = EIO; - break; - } - } else - rc = 0; - -out: - mcdi->resprc = rc; - if (rc) - mcdi->resplen = 0; - - /* Return rc=0 like wait_event_timeout() */ - return 0; -} - -/* Test and clear MC-rebooted flag for this port/function */ -int efx_mcdi_poll_reboot(struct efx_nic *efx) -{ - unsigned int addr = FR_CZ_MC_TREG_SMEM + MCDI_REBOOT_FLAG(efx); - efx_dword_t reg; - uint32_t value; - - if (efx_nic_rev(efx) < EFX_REV_SIENA_A0) - return false; - - efx_readd(efx, ®, addr); - value = EFX_DWORD_FIELD(reg, EFX_DWORD_0); - - if (value == 0) - return 0; - - EFX_ZERO_DWORD(reg); - efx_writed(efx, ®, addr); - - if (value == MC_STATUS_DWORD_ASSERT) - return -EINTR; - else - return -EIO; -} - -static void efx_mcdi_acquire(struct efx_mcdi_iface *mcdi) -{ - /* Wait until the interface becomes QUIESCENT and we win the race - * to mark it RUNNING. */ - wait_event(mcdi->wq, - atomic_cmpxchg(&mcdi->state, - MCDI_STATE_QUIESCENT, - MCDI_STATE_RUNNING) - == MCDI_STATE_QUIESCENT); -} - -static int efx_mcdi_await_completion(struct efx_nic *efx) -{ - struct efx_mcdi_iface *mcdi = efx_mcdi(efx); - - if (wait_event_timeout( - mcdi->wq, - atomic_read(&mcdi->state) == MCDI_STATE_COMPLETED, - msecs_to_jiffies(MCDI_RPC_TIMEOUT * 1000)) == 0) - return -ETIMEDOUT; - - /* Check if efx_mcdi_set_mode() switched us back to polled completions. - * In which case, poll for completions directly. If efx_mcdi_ev_cpl() - * completed the request first, then we'll just end up completing the - * request again, which is safe. - * - * We need an smp_rmb() to synchronise with efx_mcdi_mode_poll(), which - * wait_event_timeout() implicitly provides. - */ - if (mcdi->mode == MCDI_MODE_POLL) - return efx_mcdi_poll(efx); - - return 0; -} - -static bool efx_mcdi_complete(struct efx_mcdi_iface *mcdi) -{ - /* If the interface is RUNNING, then move to COMPLETED and wake any - * waiters. If the interface isn't in RUNNING then we've received a - * duplicate completion after we've already transitioned back to - * QUIESCENT. [A subsequent invocation would increment seqno, so would - * have failed the seqno check]. - */ - if (atomic_cmpxchg(&mcdi->state, - MCDI_STATE_RUNNING, - MCDI_STATE_COMPLETED) == MCDI_STATE_RUNNING) { - wake_up(&mcdi->wq); - return true; - } - - return false; -} - -static void efx_mcdi_release(struct efx_mcdi_iface *mcdi) -{ - atomic_set(&mcdi->state, MCDI_STATE_QUIESCENT); - wake_up(&mcdi->wq); -} - -static void efx_mcdi_ev_cpl(struct efx_nic *efx, unsigned int seqno, - unsigned int datalen, unsigned int errno) -{ - struct efx_mcdi_iface *mcdi = efx_mcdi(efx); - bool wake = false; - - spin_lock(&mcdi->iface_lock); - - if ((seqno ^ mcdi->seqno) & SEQ_MASK) { - if (mcdi->credits) - /* The request has been cancelled */ - --mcdi->credits; - else - netif_err(efx, hw, efx->net_dev, - "MC response mismatch tx seq 0x%x rx " - "seq 0x%x\n", seqno, mcdi->seqno); - } else { - mcdi->resprc = errno; - mcdi->resplen = datalen; - - wake = true; - } - - spin_unlock(&mcdi->iface_lock); - - if (wake) - efx_mcdi_complete(mcdi); -} - -/* Issue the given command by writing the data into the shared memory PDU, - * ring the doorbell and wait for completion. Copyout the result. */ -int efx_mcdi_rpc(struct efx_nic *efx, unsigned cmd, - const u8 *inbuf, size_t inlen, u8 *outbuf, size_t outlen, - size_t *outlen_actual) -{ - struct efx_mcdi_iface *mcdi = efx_mcdi(efx); - int rc; - BUG_ON(efx_nic_rev(efx) < EFX_REV_SIENA_A0); - - efx_mcdi_acquire(mcdi); - - /* Serialise with efx_mcdi_ev_cpl() and efx_mcdi_ev_death() */ - spin_lock_bh(&mcdi->iface_lock); - ++mcdi->seqno; - spin_unlock_bh(&mcdi->iface_lock); - - efx_mcdi_copyin(efx, cmd, inbuf, inlen); - - if (mcdi->mode == MCDI_MODE_POLL) - rc = efx_mcdi_poll(efx); - else - rc = efx_mcdi_await_completion(efx); - - if (rc != 0) { - /* Close the race with efx_mcdi_ev_cpl() executing just too late - * and completing a request we've just cancelled, by ensuring - * that the seqno check therein fails. - */ - spin_lock_bh(&mcdi->iface_lock); - ++mcdi->seqno; - ++mcdi->credits; - spin_unlock_bh(&mcdi->iface_lock); - - netif_err(efx, hw, efx->net_dev, - "MC command 0x%x inlen %d mode %d timed out\n", - cmd, (int)inlen, mcdi->mode); - } else { - size_t resplen; - - /* At the very least we need a memory barrier here to ensure - * we pick up changes from efx_mcdi_ev_cpl(). Protect against - * a spurious efx_mcdi_ev_cpl() running concurrently by - * acquiring the iface_lock. */ - spin_lock_bh(&mcdi->iface_lock); - rc = -mcdi->resprc; - resplen = mcdi->resplen; - spin_unlock_bh(&mcdi->iface_lock); - - if (rc == 0) { - efx_mcdi_copyout(efx, outbuf, - min(outlen, mcdi->resplen + 3) & ~0x3); - if (outlen_actual != NULL) - *outlen_actual = resplen; - } else if (cmd == MC_CMD_REBOOT && rc == -EIO) - ; /* Don't reset if MC_CMD_REBOOT returns EIO */ - else if (rc == -EIO || rc == -EINTR) { - netif_err(efx, hw, efx->net_dev, "MC fatal error %d\n", - -rc); - efx_schedule_reset(efx, RESET_TYPE_MC_FAILURE); - } else - netif_dbg(efx, hw, efx->net_dev, - "MC command 0x%x inlen %d failed rc=%d\n", - cmd, (int)inlen, -rc); - } - - efx_mcdi_release(mcdi); - return rc; -} - -void efx_mcdi_mode_poll(struct efx_nic *efx) -{ - struct efx_mcdi_iface *mcdi; - - if (efx_nic_rev(efx) < EFX_REV_SIENA_A0) - return; - - mcdi = efx_mcdi(efx); - if (mcdi->mode == MCDI_MODE_POLL) - return; - - /* We can switch from event completion to polled completion, because - * mcdi requests are always completed in shared memory. We do this by - * switching the mode to POLL'd then completing the request. - * efx_mcdi_await_completion() will then call efx_mcdi_poll(). - * - * We need an smp_wmb() to synchronise with efx_mcdi_await_completion(), - * which efx_mcdi_complete() provides for us. - */ - mcdi->mode = MCDI_MODE_POLL; - - efx_mcdi_complete(mcdi); -} - -void efx_mcdi_mode_event(struct efx_nic *efx) -{ - struct efx_mcdi_iface *mcdi; - - if (efx_nic_rev(efx) < EFX_REV_SIENA_A0) - return; - - mcdi = efx_mcdi(efx); - - if (mcdi->mode == MCDI_MODE_EVENTS) - return; - - /* We can't switch from polled to event completion in the middle of a - * request, because the completion method is specified in the request. - * So acquire the interface to serialise the requestors. We don't need - * to acquire the iface_lock to change the mode here, but we do need a - * write memory barrier ensure that efx_mcdi_rpc() sees it, which - * efx_mcdi_acquire() provides. - */ - efx_mcdi_acquire(mcdi); - mcdi->mode = MCDI_MODE_EVENTS; - efx_mcdi_release(mcdi); -} - -static void efx_mcdi_ev_death(struct efx_nic *efx, int rc) -{ - struct efx_mcdi_iface *mcdi = efx_mcdi(efx); - - /* If there is an outstanding MCDI request, it has been terminated - * either by a BADASSERT or REBOOT event. If the mcdi interface is - * in polled mode, then do nothing because the MC reboot handler will - * set the header correctly. However, if the mcdi interface is waiting - * for a CMDDONE event it won't receive it [and since all MCDI events - * are sent to the same queue, we can't be racing with - * efx_mcdi_ev_cpl()] - * - * There's a race here with efx_mcdi_rpc(), because we might receive - * a REBOOT event *before* the request has been copied out. In polled - * mode (during startup) this is irrelevent, because efx_mcdi_complete() - * is ignored. In event mode, this condition is just an edge-case of - * receiving a REBOOT event after posting the MCDI request. Did the mc - * reboot before or after the copyout? The best we can do always is - * just return failure. - */ - spin_lock(&mcdi->iface_lock); - if (efx_mcdi_complete(mcdi)) { - if (mcdi->mode == MCDI_MODE_EVENTS) { - mcdi->resprc = rc; - mcdi->resplen = 0; - ++mcdi->credits; - } - } else - /* Nobody was waiting for an MCDI request, so trigger a reset */ - efx_schedule_reset(efx, RESET_TYPE_MC_FAILURE); - - spin_unlock(&mcdi->iface_lock); -} - -static unsigned int efx_mcdi_event_link_speed[] = { - [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100, - [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000, - [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000, -}; - - -static void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev) -{ - u32 flags, fcntl, speed, lpa; - - speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED); - EFX_BUG_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed)); - speed = efx_mcdi_event_link_speed[speed]; - - flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS); - fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL); - lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP); - - /* efx->link_state is only modified by efx_mcdi_phy_get_link(), - * which is only run after flushing the event queues. Therefore, it - * is safe to modify the link state outside of the mac_lock here. - */ - efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl); - - efx_mcdi_phy_check_fcntl(efx, lpa); - - efx_link_status_changed(efx); -} - -static const char *sensor_names[] = { - [MC_CMD_SENSOR_CONTROLLER_TEMP] = "Controller temp. sensor", - [MC_CMD_SENSOR_PHY_COMMON_TEMP] = "PHY shared temp. sensor", - [MC_CMD_SENSOR_CONTROLLER_COOLING] = "Controller cooling", - [MC_CMD_SENSOR_PHY0_TEMP] = "PHY 0 temp. sensor", - [MC_CMD_SENSOR_PHY0_COOLING] = "PHY 0 cooling", - [MC_CMD_SENSOR_PHY1_TEMP] = "PHY 1 temp. sensor", - [MC_CMD_SENSOR_PHY1_COOLING] = "PHY 1 cooling", - [MC_CMD_SENSOR_IN_1V0] = "1.0V supply sensor", - [MC_CMD_SENSOR_IN_1V2] = "1.2V supply sensor", - [MC_CMD_SENSOR_IN_1V8] = "1.8V supply sensor", - [MC_CMD_SENSOR_IN_2V5] = "2.5V supply sensor", - [MC_CMD_SENSOR_IN_3V3] = "3.3V supply sensor", - [MC_CMD_SENSOR_IN_12V0] = "12V supply sensor" -}; - -static const char *sensor_status_names[] = { - [MC_CMD_SENSOR_STATE_OK] = "OK", - [MC_CMD_SENSOR_STATE_WARNING] = "Warning", - [MC_CMD_SENSOR_STATE_FATAL] = "Fatal", - [MC_CMD_SENSOR_STATE_BROKEN] = "Device failure", -}; - -static void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev) -{ - unsigned int monitor, state, value; - const char *name, *state_txt; - monitor = EFX_QWORD_FIELD(*ev, MCDI_EVENT_SENSOREVT_MONITOR); - state = EFX_QWORD_FIELD(*ev, MCDI_EVENT_SENSOREVT_STATE); - value = EFX_QWORD_FIELD(*ev, MCDI_EVENT_SENSOREVT_VALUE); - /* Deal gracefully with the board having more drivers than we - * know about, but do not expect new sensor states. */ - name = (monitor >= ARRAY_SIZE(sensor_names)) - ? "No sensor name available" : - sensor_names[monitor]; - EFX_BUG_ON_PARANOID(state >= ARRAY_SIZE(sensor_status_names)); - state_txt = sensor_status_names[state]; - - netif_err(efx, hw, efx->net_dev, - "Sensor %d (%s) reports condition '%s' for raw value %d\n", - monitor, name, state_txt, value); -} - -/* Called from falcon_process_eventq for MCDI events */ -void efx_mcdi_process_event(struct efx_channel *channel, - efx_qword_t *event) -{ - struct efx_nic *efx = channel->efx; - int code = EFX_QWORD_FIELD(*event, MCDI_EVENT_CODE); - u32 data = EFX_QWORD_FIELD(*event, MCDI_EVENT_DATA); - - switch (code) { - case MCDI_EVENT_CODE_BADSSERT: - netif_err(efx, hw, efx->net_dev, - "MC watchdog or assertion failure at 0x%x\n", data); - efx_mcdi_ev_death(efx, EINTR); - break; - - case MCDI_EVENT_CODE_PMNOTICE: - netif_info(efx, wol, efx->net_dev, "MCDI PM event.\n"); - break; - - case MCDI_EVENT_CODE_CMDDONE: - efx_mcdi_ev_cpl(efx, - MCDI_EVENT_FIELD(*event, CMDDONE_SEQ), - MCDI_EVENT_FIELD(*event, CMDDONE_DATALEN), - MCDI_EVENT_FIELD(*event, CMDDONE_ERRNO)); - break; - - case MCDI_EVENT_CODE_LINKCHANGE: - efx_mcdi_process_link_change(efx, event); - break; - case MCDI_EVENT_CODE_SENSOREVT: - efx_mcdi_sensor_event(efx, event); - break; - case MCDI_EVENT_CODE_SCHEDERR: - netif_info(efx, hw, efx->net_dev, - "MC Scheduler error address=0x%x\n", data); - break; - case MCDI_EVENT_CODE_REBOOT: - netif_info(efx, hw, efx->net_dev, "MC Reboot\n"); - efx_mcdi_ev_death(efx, EIO); - break; - case MCDI_EVENT_CODE_MAC_STATS_DMA: - /* MAC stats are gather lazily. We can ignore this. */ - break; - - default: - netif_err(efx, hw, efx->net_dev, "Unknown MCDI event 0x%x\n", - code); - } -} - -/************************************************************************** - * - * Specific request functions - * - ************************************************************************** - */ - -int efx_mcdi_fwver(struct efx_nic *efx, u64 *version, u32 *build) -{ - u8 outbuf[ALIGN(MC_CMD_GET_VERSION_V1_OUT_LEN, 4)]; - size_t outlength; - const __le16 *ver_words; - int rc; - - BUILD_BUG_ON(MC_CMD_GET_VERSION_IN_LEN != 0); - - rc = efx_mcdi_rpc(efx, MC_CMD_GET_VERSION, NULL, 0, - outbuf, sizeof(outbuf), &outlength); - if (rc) - goto fail; - - if (outlength == MC_CMD_GET_VERSION_V0_OUT_LEN) { - *version = 0; - *build = MCDI_DWORD(outbuf, GET_VERSION_OUT_FIRMWARE); - return 0; - } - - if (outlength < MC_CMD_GET_VERSION_V1_OUT_LEN) { - rc = -EIO; - goto fail; - } - - ver_words = (__le16 *)MCDI_PTR(outbuf, GET_VERSION_OUT_VERSION); - *version = (((u64)le16_to_cpu(ver_words[0]) << 48) | - ((u64)le16_to_cpu(ver_words[1]) << 32) | - ((u64)le16_to_cpu(ver_words[2]) << 16) | - le16_to_cpu(ver_words[3])); - *build = MCDI_DWORD(outbuf, GET_VERSION_OUT_FIRMWARE); - - return 0; - -fail: - netif_err(efx, probe, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); - return rc; -} - -int efx_mcdi_drv_attach(struct efx_nic *efx, bool driver_operating, - bool *was_attached) -{ - u8 inbuf[MC_CMD_DRV_ATTACH_IN_LEN]; - u8 outbuf[MC_CMD_DRV_ATTACH_OUT_LEN]; - size_t outlen; - int rc; - - MCDI_SET_DWORD(inbuf, DRV_ATTACH_IN_NEW_STATE, - driver_operating ? 1 : 0); - MCDI_SET_DWORD(inbuf, DRV_ATTACH_IN_UPDATE, 1); - - rc = efx_mcdi_rpc(efx, MC_CMD_DRV_ATTACH, inbuf, sizeof(inbuf), - outbuf, sizeof(outbuf), &outlen); - if (rc) - goto fail; - if (outlen < MC_CMD_DRV_ATTACH_OUT_LEN) { - rc = -EIO; - goto fail; - } - - if (was_attached != NULL) - *was_attached = MCDI_DWORD(outbuf, DRV_ATTACH_OUT_OLD_STATE); - return 0; - -fail: - netif_err(efx, probe, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); - return rc; -} - -int efx_mcdi_get_board_cfg(struct efx_nic *efx, u8 *mac_address, - u16 *fw_subtype_list) -{ - uint8_t outbuf[MC_CMD_GET_BOARD_CFG_OUT_LEN]; - size_t outlen; - int port_num = efx_port_num(efx); - int offset; - int rc; - - BUILD_BUG_ON(MC_CMD_GET_BOARD_CFG_IN_LEN != 0); - - rc = efx_mcdi_rpc(efx, MC_CMD_GET_BOARD_CFG, NULL, 0, - outbuf, sizeof(outbuf), &outlen); - if (rc) - goto fail; - - if (outlen < MC_CMD_GET_BOARD_CFG_OUT_LEN) { - rc = -EIO; - goto fail; - } - - offset = (port_num) - ? MC_CMD_GET_BOARD_CFG_OUT_MAC_ADDR_BASE_PORT1_OFST - : MC_CMD_GET_BOARD_CFG_OUT_MAC_ADDR_BASE_PORT0_OFST; - if (mac_address) - memcpy(mac_address, outbuf + offset, ETH_ALEN); - if (fw_subtype_list) - memcpy(fw_subtype_list, - outbuf + MC_CMD_GET_BOARD_CFG_OUT_FW_SUBTYPE_LIST_OFST, - MC_CMD_GET_BOARD_CFG_OUT_FW_SUBTYPE_LIST_LEN); - - return 0; - -fail: - netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d len=%d\n", - __func__, rc, (int)outlen); - - return rc; -} - -int efx_mcdi_log_ctrl(struct efx_nic *efx, bool evq, bool uart, u32 dest_evq) -{ - u8 inbuf[MC_CMD_LOG_CTRL_IN_LEN]; - u32 dest = 0; - int rc; - - if (uart) - dest |= MC_CMD_LOG_CTRL_IN_LOG_DEST_UART; - if (evq) - dest |= MC_CMD_LOG_CTRL_IN_LOG_DEST_EVQ; - - MCDI_SET_DWORD(inbuf, LOG_CTRL_IN_LOG_DEST, dest); - MCDI_SET_DWORD(inbuf, LOG_CTRL_IN_LOG_DEST_EVQ, dest_evq); - - BUILD_BUG_ON(MC_CMD_LOG_CTRL_OUT_LEN != 0); - - rc = efx_mcdi_rpc(efx, MC_CMD_LOG_CTRL, inbuf, sizeof(inbuf), - NULL, 0, NULL); - if (rc) - goto fail; - - return 0; - -fail: - netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); - return rc; -} - -int efx_mcdi_nvram_types(struct efx_nic *efx, u32 *nvram_types_out) -{ - u8 outbuf[MC_CMD_NVRAM_TYPES_OUT_LEN]; - size_t outlen; - int rc; - - BUILD_BUG_ON(MC_CMD_NVRAM_TYPES_IN_LEN != 0); - - rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_TYPES, NULL, 0, - outbuf, sizeof(outbuf), &outlen); - if (rc) - goto fail; - if (outlen < MC_CMD_NVRAM_TYPES_OUT_LEN) { - rc = -EIO; - goto fail; - } - - *nvram_types_out = MCDI_DWORD(outbuf, NVRAM_TYPES_OUT_TYPES); - return 0; - -fail: - netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", - __func__, rc); - return rc; -} - -int efx_mcdi_nvram_info(struct efx_nic *efx, unsigned int type, - size_t *size_out, size_t *erase_size_out, - bool *protected_out) -{ - u8 inbuf[MC_CMD_NVRAM_INFO_IN_LEN]; - u8 outbuf[MC_CMD_NVRAM_INFO_OUT_LEN]; - size_t outlen; - int rc; - - MCDI_SET_DWORD(inbuf, NVRAM_INFO_IN_TYPE, type); - - rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_INFO, inbuf, sizeof(inbuf), - outbuf, sizeof(outbuf), &outlen); - if (rc) - goto fail; - if (outlen < MC_CMD_NVRAM_INFO_OUT_LEN) { - rc = -EIO; - goto fail; - } - - *size_out = MCDI_DWORD(outbuf, NVRAM_INFO_OUT_SIZE); - *erase_size_out = MCDI_DWORD(outbuf, NVRAM_INFO_OUT_ERASESIZE); - *protected_out = !!(MCDI_DWORD(outbuf, NVRAM_INFO_OUT_FLAGS) & - (1 << MC_CMD_NVRAM_PROTECTED_LBN)); - return 0; - -fail: - netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); - return rc; -} - -int efx_mcdi_nvram_update_start(struct efx_nic *efx, unsigned int type) -{ - u8 inbuf[MC_CMD_NVRAM_UPDATE_START_IN_LEN]; - int rc; - - MCDI_SET_DWORD(inbuf, NVRAM_UPDATE_START_IN_TYPE, type); - - BUILD_BUG_ON(MC_CMD_NVRAM_UPDATE_START_OUT_LEN != 0); - - rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_UPDATE_START, inbuf, sizeof(inbuf), - NULL, 0, NULL); - if (rc) - goto fail; - - return 0; - -fail: - netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); - return rc; -} - -int efx_mcdi_nvram_read(struct efx_nic *efx, unsigned int type, - loff_t offset, u8 *buffer, size_t length) -{ - u8 inbuf[MC_CMD_NVRAM_READ_IN_LEN]; - u8 outbuf[MC_CMD_NVRAM_READ_OUT_LEN(EFX_MCDI_NVRAM_LEN_MAX)]; - size_t outlen; - int rc; - - MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_TYPE, type); - MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_OFFSET, offset); - MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_LENGTH, length); - - rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_READ, inbuf, sizeof(inbuf), - outbuf, sizeof(outbuf), &outlen); - if (rc) - goto fail; - - memcpy(buffer, MCDI_PTR(outbuf, NVRAM_READ_OUT_READ_BUFFER), length); - return 0; - -fail: - netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); - return rc; -} - -int efx_mcdi_nvram_write(struct efx_nic *efx, unsigned int type, - loff_t offset, const u8 *buffer, size_t length) -{ - u8 inbuf[MC_CMD_NVRAM_WRITE_IN_LEN(EFX_MCDI_NVRAM_LEN_MAX)]; - int rc; - - MCDI_SET_DWORD(inbuf, NVRAM_WRITE_IN_TYPE, type); - MCDI_SET_DWORD(inbuf, NVRAM_WRITE_IN_OFFSET, offset); - MCDI_SET_DWORD(inbuf, NVRAM_WRITE_IN_LENGTH, length); - memcpy(MCDI_PTR(inbuf, NVRAM_WRITE_IN_WRITE_BUFFER), buffer, length); - - BUILD_BUG_ON(MC_CMD_NVRAM_WRITE_OUT_LEN != 0); - - rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_WRITE, inbuf, - ALIGN(MC_CMD_NVRAM_WRITE_IN_LEN(length), 4), - NULL, 0, NULL); - if (rc) - goto fail; - - return 0; - -fail: - netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); - return rc; -} - -int efx_mcdi_nvram_erase(struct efx_nic *efx, unsigned int type, - loff_t offset, size_t length) -{ - u8 inbuf[MC_CMD_NVRAM_ERASE_IN_LEN]; - int rc; - - MCDI_SET_DWORD(inbuf, NVRAM_ERASE_IN_TYPE, type); - MCDI_SET_DWORD(inbuf, NVRAM_ERASE_IN_OFFSET, offset); - MCDI_SET_DWORD(inbuf, NVRAM_ERASE_IN_LENGTH, length); - - BUILD_BUG_ON(MC_CMD_NVRAM_ERASE_OUT_LEN != 0); - - rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_ERASE, inbuf, sizeof(inbuf), - NULL, 0, NULL); - if (rc) - goto fail; - - return 0; - -fail: - netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); - return rc; -} - -int efx_mcdi_nvram_update_finish(struct efx_nic *efx, unsigned int type) -{ - u8 inbuf[MC_CMD_NVRAM_UPDATE_FINISH_IN_LEN]; - int rc; - - MCDI_SET_DWORD(inbuf, NVRAM_UPDATE_FINISH_IN_TYPE, type); - - BUILD_BUG_ON(MC_CMD_NVRAM_UPDATE_FINISH_OUT_LEN != 0); - - rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_UPDATE_FINISH, inbuf, sizeof(inbuf), - NULL, 0, NULL); - if (rc) - goto fail; - - return 0; - -fail: - netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); - return rc; -} - -static int efx_mcdi_nvram_test(struct efx_nic *efx, unsigned int type) -{ - u8 inbuf[MC_CMD_NVRAM_TEST_IN_LEN]; - u8 outbuf[MC_CMD_NVRAM_TEST_OUT_LEN]; - int rc; - - MCDI_SET_DWORD(inbuf, NVRAM_TEST_IN_TYPE, type); - - rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_TEST, inbuf, sizeof(inbuf), - outbuf, sizeof(outbuf), NULL); - if (rc) - return rc; - - switch (MCDI_DWORD(outbuf, NVRAM_TEST_OUT_RESULT)) { - case MC_CMD_NVRAM_TEST_PASS: - case MC_CMD_NVRAM_TEST_NOTSUPP: - return 0; - default: - return -EIO; - } -} - -int efx_mcdi_nvram_test_all(struct efx_nic *efx) -{ - u32 nvram_types; - unsigned int type; - int rc; - - rc = efx_mcdi_nvram_types(efx, &nvram_types); - if (rc) - goto fail1; - - type = 0; - while (nvram_types != 0) { - if (nvram_types & 1) { - rc = efx_mcdi_nvram_test(efx, type); - if (rc) - goto fail2; - } - type++; - nvram_types >>= 1; - } - - return 0; - -fail2: - netif_err(efx, hw, efx->net_dev, "%s: failed type=%u\n", - __func__, type); -fail1: - netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); - return rc; -} - -static int efx_mcdi_read_assertion(struct efx_nic *efx) -{ - u8 inbuf[MC_CMD_GET_ASSERTS_IN_LEN]; - u8 outbuf[MC_CMD_GET_ASSERTS_OUT_LEN]; - unsigned int flags, index, ofst; - const char *reason; - size_t outlen; - int retry; - int rc; - - /* Attempt to read any stored assertion state before we reboot - * the mcfw out of the assertion handler. Retry twice, once - * because a boot-time assertion might cause this command to fail - * with EINTR. And once again because GET_ASSERTS can race with - * MC_CMD_REBOOT running on the other port. */ - retry = 2; - do { - MCDI_SET_DWORD(inbuf, GET_ASSERTS_IN_CLEAR, 1); - rc = efx_mcdi_rpc(efx, MC_CMD_GET_ASSERTS, - inbuf, MC_CMD_GET_ASSERTS_IN_LEN, - outbuf, sizeof(outbuf), &outlen); - } while ((rc == -EINTR || rc == -EIO) && retry-- > 0); - - if (rc) - return rc; - if (outlen < MC_CMD_GET_ASSERTS_OUT_LEN) - return -EIO; - - /* Print out any recorded assertion state */ - flags = MCDI_DWORD(outbuf, GET_ASSERTS_OUT_GLOBAL_FLAGS); - if (flags == MC_CMD_GET_ASSERTS_FLAGS_NO_FAILS) - return 0; - - reason = (flags == MC_CMD_GET_ASSERTS_FLAGS_SYS_FAIL) - ? "system-level assertion" - : (flags == MC_CMD_GET_ASSERTS_FLAGS_THR_FAIL) - ? "thread-level assertion" - : (flags == MC_CMD_GET_ASSERTS_FLAGS_WDOG_FIRED) - ? "watchdog reset" - : "unknown assertion"; - netif_err(efx, hw, efx->net_dev, - "MCPU %s at PC = 0x%.8x in thread 0x%.8x\n", reason, - MCDI_DWORD(outbuf, GET_ASSERTS_OUT_SAVED_PC_OFFS), - MCDI_DWORD(outbuf, GET_ASSERTS_OUT_THREAD_OFFS)); - - /* Print out the registers */ - ofst = MC_CMD_GET_ASSERTS_OUT_GP_REGS_OFFS_OFST; - for (index = 1; index < 32; index++) { - netif_err(efx, hw, efx->net_dev, "R%.2d (?): 0x%.8x\n", index, - MCDI_DWORD2(outbuf, ofst)); - ofst += sizeof(efx_dword_t); - } - - return 0; -} - -static void efx_mcdi_exit_assertion(struct efx_nic *efx) -{ - u8 inbuf[MC_CMD_REBOOT_IN_LEN]; - - /* Atomically reboot the mcfw out of the assertion handler */ - BUILD_BUG_ON(MC_CMD_REBOOT_OUT_LEN != 0); - MCDI_SET_DWORD(inbuf, REBOOT_IN_FLAGS, - MC_CMD_REBOOT_FLAGS_AFTER_ASSERTION); - efx_mcdi_rpc(efx, MC_CMD_REBOOT, inbuf, MC_CMD_REBOOT_IN_LEN, - NULL, 0, NULL); -} - -int efx_mcdi_handle_assertion(struct efx_nic *efx) -{ - int rc; - - rc = efx_mcdi_read_assertion(efx); - if (rc) - return rc; - - efx_mcdi_exit_assertion(efx); - - return 0; -} - -void efx_mcdi_set_id_led(struct efx_nic *efx, enum efx_led_mode mode) -{ - u8 inbuf[MC_CMD_SET_ID_LED_IN_LEN]; - int rc; - - BUILD_BUG_ON(EFX_LED_OFF != MC_CMD_LED_OFF); - BUILD_BUG_ON(EFX_LED_ON != MC_CMD_LED_ON); - BUILD_BUG_ON(EFX_LED_DEFAULT != MC_CMD_LED_DEFAULT); - - BUILD_BUG_ON(MC_CMD_SET_ID_LED_OUT_LEN != 0); - - MCDI_SET_DWORD(inbuf, SET_ID_LED_IN_STATE, mode); - - rc = efx_mcdi_rpc(efx, MC_CMD_SET_ID_LED, inbuf, sizeof(inbuf), - NULL, 0, NULL); - if (rc) - netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", - __func__, rc); -} - -int efx_mcdi_reset_port(struct efx_nic *efx) -{ - int rc = efx_mcdi_rpc(efx, MC_CMD_PORT_RESET, NULL, 0, NULL, 0, NULL); - if (rc) - netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", - __func__, rc); - return rc; -} - -int efx_mcdi_reset_mc(struct efx_nic *efx) -{ - u8 inbuf[MC_CMD_REBOOT_IN_LEN]; - int rc; - - BUILD_BUG_ON(MC_CMD_REBOOT_OUT_LEN != 0); - MCDI_SET_DWORD(inbuf, REBOOT_IN_FLAGS, 0); - rc = efx_mcdi_rpc(efx, MC_CMD_REBOOT, inbuf, sizeof(inbuf), - NULL, 0, NULL); - /* White is black, and up is down */ - if (rc == -EIO) - return 0; - if (rc == 0) - rc = -EIO; - netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); - return rc; -} - -static int efx_mcdi_wol_filter_set(struct efx_nic *efx, u32 type, - const u8 *mac, int *id_out) -{ - u8 inbuf[MC_CMD_WOL_FILTER_SET_IN_LEN]; - u8 outbuf[MC_CMD_WOL_FILTER_SET_OUT_LEN]; - size_t outlen; - int rc; - - MCDI_SET_DWORD(inbuf, WOL_FILTER_SET_IN_WOL_TYPE, type); - MCDI_SET_DWORD(inbuf, WOL_FILTER_SET_IN_FILTER_MODE, - MC_CMD_FILTER_MODE_SIMPLE); - memcpy(MCDI_PTR(inbuf, WOL_FILTER_SET_IN_MAGIC_MAC), mac, ETH_ALEN); - - rc = efx_mcdi_rpc(efx, MC_CMD_WOL_FILTER_SET, inbuf, sizeof(inbuf), - outbuf, sizeof(outbuf), &outlen); - if (rc) - goto fail; - - if (outlen < MC_CMD_WOL_FILTER_SET_OUT_LEN) { - rc = -EIO; - goto fail; - } - - *id_out = (int)MCDI_DWORD(outbuf, WOL_FILTER_SET_OUT_FILTER_ID); - - return 0; - -fail: - *id_out = -1; - netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); - return rc; - -} - - -int -efx_mcdi_wol_filter_set_magic(struct efx_nic *efx, const u8 *mac, int *id_out) -{ - return efx_mcdi_wol_filter_set(efx, MC_CMD_WOL_TYPE_MAGIC, mac, id_out); -} - - -int efx_mcdi_wol_filter_get_magic(struct efx_nic *efx, int *id_out) -{ - u8 outbuf[MC_CMD_WOL_FILTER_GET_OUT_LEN]; - size_t outlen; - int rc; - - rc = efx_mcdi_rpc(efx, MC_CMD_WOL_FILTER_GET, NULL, 0, - outbuf, sizeof(outbuf), &outlen); - if (rc) - goto fail; - - if (outlen < MC_CMD_WOL_FILTER_GET_OUT_LEN) { - rc = -EIO; - goto fail; - } - - *id_out = (int)MCDI_DWORD(outbuf, WOL_FILTER_GET_OUT_FILTER_ID); - - return 0; - -fail: - *id_out = -1; - netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); - return rc; -} - - -int efx_mcdi_wol_filter_remove(struct efx_nic *efx, int id) -{ - u8 inbuf[MC_CMD_WOL_FILTER_REMOVE_IN_LEN]; - int rc; - - MCDI_SET_DWORD(inbuf, WOL_FILTER_REMOVE_IN_FILTER_ID, (u32)id); - - rc = efx_mcdi_rpc(efx, MC_CMD_WOL_FILTER_REMOVE, inbuf, sizeof(inbuf), - NULL, 0, NULL); - if (rc) - goto fail; - - return 0; - -fail: - netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); - return rc; -} - - -int efx_mcdi_wol_filter_reset(struct efx_nic *efx) -{ - int rc; - - rc = efx_mcdi_rpc(efx, MC_CMD_WOL_FILTER_RESET, NULL, 0, NULL, 0, NULL); - if (rc) - goto fail; - - return 0; - -fail: - netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); - return rc; -} - |