/**************************************************************************** * 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 #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 * ************************************************************************** */ void efx_mcdi_print_fwver(struct efx_nic *efx, char *buf, size_t len) { 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_V1_OUT_LEN) { rc = -EIO; goto fail; } ver_words = (__le16 *)MCDI_PTR(outbuf, GET_VERSION_OUT_VERSION); snprintf(buf, len, "%u.%u.%u.%u", le16_to_cpu(ver_words[0]), le16_to_cpu(ver_words[1]), le16_to_cpu(ver_words[2]), le16_to_cpu(ver_words[3])); return; fail: netif_err(efx, probe, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); buf[0] = 0; } 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; }