1 /****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2008-2011 Solarflare Communications Inc.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published
7 * by the Free Software Foundation, incorporated herein by reference.
10 #include <linux/delay.h>
11 #include "net_driver.h"
15 #include "mcdi_pcol.h"
18 /**************************************************************************
20 * Management-Controller-to-Driver Interface
22 **************************************************************************
25 /* Software-defined structure to the shared-memory */
26 #define CMD_NOTIFY_PORT0 0
27 #define CMD_NOTIFY_PORT1 4
28 #define CMD_PDU_PORT0 0x008
29 #define CMD_PDU_PORT1 0x108
30 #define REBOOT_FLAG_PORT0 0x3f8
31 #define REBOOT_FLAG_PORT1 0x3fc
33 #define MCDI_RPC_TIMEOUT 10 /*seconds */
35 #define MCDI_PDU(efx) \
36 (efx_port_num(efx) ? CMD_PDU_PORT1 : CMD_PDU_PORT0)
37 #define MCDI_DOORBELL(efx) \
38 (efx_port_num(efx) ? CMD_NOTIFY_PORT1 : CMD_NOTIFY_PORT0)
39 #define MCDI_REBOOT_FLAG(efx) \
40 (efx_port_num(efx) ? REBOOT_FLAG_PORT1 : REBOOT_FLAG_PORT0)
43 EFX_MASK32(EFX_WIDTH(MCDI_HEADER_SEQ))
45 static inline struct efx_mcdi_iface *efx_mcdi(struct efx_nic *efx)
47 struct siena_nic_data *nic_data;
48 EFX_BUG_ON_PARANOID(efx_nic_rev(efx) < EFX_REV_SIENA_A0);
49 nic_data = efx->nic_data;
50 return &nic_data->mcdi;
53 void efx_mcdi_init(struct efx_nic *efx)
55 struct efx_mcdi_iface *mcdi;
57 if (efx_nic_rev(efx) < EFX_REV_SIENA_A0)
61 init_waitqueue_head(&mcdi->wq);
62 spin_lock_init(&mcdi->iface_lock);
63 atomic_set(&mcdi->state, MCDI_STATE_QUIESCENT);
64 mcdi->mode = MCDI_MODE_POLL;
66 (void) efx_mcdi_poll_reboot(efx);
69 static void efx_mcdi_copyin(struct efx_nic *efx, unsigned cmd,
70 const u8 *inbuf, size_t inlen)
72 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
73 unsigned pdu = FR_CZ_MC_TREG_SMEM + MCDI_PDU(efx);
74 unsigned doorbell = FR_CZ_MC_TREG_SMEM + MCDI_DOORBELL(efx);
79 BUG_ON(atomic_read(&mcdi->state) == MCDI_STATE_QUIESCENT);
80 BUG_ON(inlen & 3 || inlen >= 0x100);
82 seqno = mcdi->seqno & SEQ_MASK;
84 if (mcdi->mode == MCDI_MODE_EVENTS)
85 xflags |= MCDI_HEADER_XFLAGS_EVREQ;
87 EFX_POPULATE_DWORD_6(hdr,
88 MCDI_HEADER_RESPONSE, 0,
89 MCDI_HEADER_RESYNC, 1,
90 MCDI_HEADER_CODE, cmd,
91 MCDI_HEADER_DATALEN, inlen,
92 MCDI_HEADER_SEQ, seqno,
93 MCDI_HEADER_XFLAGS, xflags);
95 efx_writed(efx, &hdr, pdu);
97 for (i = 0; i < inlen; i += 4)
98 _efx_writed(efx, *((__le32 *)(inbuf + i)), pdu + 4 + i);
100 /* Ensure the payload is written out before the header */
103 /* ring the doorbell with a distinctive value */
104 _efx_writed(efx, (__force __le32) 0x45789abc, doorbell);
107 static void efx_mcdi_copyout(struct efx_nic *efx, u8 *outbuf, size_t outlen)
109 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
110 unsigned int pdu = FR_CZ_MC_TREG_SMEM + MCDI_PDU(efx);
113 BUG_ON(atomic_read(&mcdi->state) == MCDI_STATE_QUIESCENT);
114 BUG_ON(outlen & 3 || outlen >= 0x100);
116 for (i = 0; i < outlen; i += 4)
117 *((__le32 *)(outbuf + i)) = _efx_readd(efx, pdu + 4 + i);
120 static int efx_mcdi_poll(struct efx_nic *efx)
122 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
123 unsigned int time, finish;
124 unsigned int respseq, respcmd, error;
125 unsigned int pdu = FR_CZ_MC_TREG_SMEM + MCDI_PDU(efx);
126 unsigned int rc, spins;
129 /* Check for a reboot atomically with respect to efx_mcdi_copyout() */
130 rc = -efx_mcdi_poll_reboot(efx);
134 /* Poll for completion. Poll quickly (once a us) for the 1st jiffy,
135 * because generally mcdi responses are fast. After that, back off
136 * and poll once a jiffy (approximately)
139 finish = get_seconds() + MCDI_RPC_TIMEOUT;
146 schedule_timeout_uninterruptible(1);
149 time = get_seconds();
152 efx_readd(efx, ®, pdu);
154 /* All 1's indicates that shared memory is in reset (and is
155 * not a valid header). Wait for it to come out reset before
156 * completing the command */
157 if (EFX_DWORD_FIELD(reg, EFX_DWORD_0) != 0xffffffff &&
158 EFX_DWORD_FIELD(reg, MCDI_HEADER_RESPONSE))
165 mcdi->resplen = EFX_DWORD_FIELD(reg, MCDI_HEADER_DATALEN);
166 respseq = EFX_DWORD_FIELD(reg, MCDI_HEADER_SEQ);
167 respcmd = EFX_DWORD_FIELD(reg, MCDI_HEADER_CODE);
168 error = EFX_DWORD_FIELD(reg, MCDI_HEADER_ERROR);
170 if (error && mcdi->resplen == 0) {
171 netif_err(efx, hw, efx->net_dev, "MC rebooted\n");
173 } else if ((respseq ^ mcdi->seqno) & SEQ_MASK) {
174 netif_err(efx, hw, efx->net_dev,
175 "MC response mismatch tx seq 0x%x rx seq 0x%x\n",
176 respseq, mcdi->seqno);
179 efx_readd(efx, ®, pdu + 4);
180 switch (EFX_DWORD_FIELD(reg, EFX_DWORD_0)) {
181 #define TRANSLATE_ERROR(name) \
182 case MC_CMD_ERR_ ## name: \
185 TRANSLATE_ERROR(ENOENT);
186 TRANSLATE_ERROR(EINTR);
187 TRANSLATE_ERROR(EACCES);
188 TRANSLATE_ERROR(EBUSY);
189 TRANSLATE_ERROR(EINVAL);
190 TRANSLATE_ERROR(EDEADLK);
191 TRANSLATE_ERROR(ENOSYS);
192 TRANSLATE_ERROR(ETIME);
193 #undef TRANSLATE_ERROR
206 /* Return rc=0 like wait_event_timeout() */
210 /* Test and clear MC-rebooted flag for this port/function */
211 int efx_mcdi_poll_reboot(struct efx_nic *efx)
213 unsigned int addr = FR_CZ_MC_TREG_SMEM + MCDI_REBOOT_FLAG(efx);
217 if (efx_nic_rev(efx) < EFX_REV_SIENA_A0)
220 efx_readd(efx, ®, addr);
221 value = EFX_DWORD_FIELD(reg, EFX_DWORD_0);
227 efx_writed(efx, ®, addr);
229 if (value == MC_STATUS_DWORD_ASSERT)
235 static void efx_mcdi_acquire(struct efx_mcdi_iface *mcdi)
237 /* Wait until the interface becomes QUIESCENT and we win the race
238 * to mark it RUNNING. */
240 atomic_cmpxchg(&mcdi->state,
241 MCDI_STATE_QUIESCENT,
243 == MCDI_STATE_QUIESCENT);
246 static int efx_mcdi_await_completion(struct efx_nic *efx)
248 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
250 if (wait_event_timeout(
252 atomic_read(&mcdi->state) == MCDI_STATE_COMPLETED,
253 msecs_to_jiffies(MCDI_RPC_TIMEOUT * 1000)) == 0)
256 /* Check if efx_mcdi_set_mode() switched us back to polled completions.
257 * In which case, poll for completions directly. If efx_mcdi_ev_cpl()
258 * completed the request first, then we'll just end up completing the
259 * request again, which is safe.
261 * We need an smp_rmb() to synchronise with efx_mcdi_mode_poll(), which
262 * wait_event_timeout() implicitly provides.
264 if (mcdi->mode == MCDI_MODE_POLL)
265 return efx_mcdi_poll(efx);
270 static bool efx_mcdi_complete(struct efx_mcdi_iface *mcdi)
272 /* If the interface is RUNNING, then move to COMPLETED and wake any
273 * waiters. If the interface isn't in RUNNING then we've received a
274 * duplicate completion after we've already transitioned back to
275 * QUIESCENT. [A subsequent invocation would increment seqno, so would
276 * have failed the seqno check].
278 if (atomic_cmpxchg(&mcdi->state,
280 MCDI_STATE_COMPLETED) == MCDI_STATE_RUNNING) {
288 static void efx_mcdi_release(struct efx_mcdi_iface *mcdi)
290 atomic_set(&mcdi->state, MCDI_STATE_QUIESCENT);
294 static void efx_mcdi_ev_cpl(struct efx_nic *efx, unsigned int seqno,
295 unsigned int datalen, unsigned int errno)
297 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
300 spin_lock(&mcdi->iface_lock);
302 if ((seqno ^ mcdi->seqno) & SEQ_MASK) {
304 /* The request has been cancelled */
307 netif_err(efx, hw, efx->net_dev,
308 "MC response mismatch tx seq 0x%x rx "
309 "seq 0x%x\n", seqno, mcdi->seqno);
311 mcdi->resprc = errno;
312 mcdi->resplen = datalen;
317 spin_unlock(&mcdi->iface_lock);
320 efx_mcdi_complete(mcdi);
323 /* Issue the given command by writing the data into the shared memory PDU,
324 * ring the doorbell and wait for completion. Copyout the result. */
325 int efx_mcdi_rpc(struct efx_nic *efx, unsigned cmd,
326 const u8 *inbuf, size_t inlen, u8 *outbuf, size_t outlen,
327 size_t *outlen_actual)
329 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
331 BUG_ON(efx_nic_rev(efx) < EFX_REV_SIENA_A0);
333 efx_mcdi_acquire(mcdi);
335 /* Serialise with efx_mcdi_ev_cpl() and efx_mcdi_ev_death() */
336 spin_lock_bh(&mcdi->iface_lock);
338 spin_unlock_bh(&mcdi->iface_lock);
340 efx_mcdi_copyin(efx, cmd, inbuf, inlen);
342 if (mcdi->mode == MCDI_MODE_POLL)
343 rc = efx_mcdi_poll(efx);
345 rc = efx_mcdi_await_completion(efx);
348 /* Close the race with efx_mcdi_ev_cpl() executing just too late
349 * and completing a request we've just cancelled, by ensuring
350 * that the seqno check therein fails.
352 spin_lock_bh(&mcdi->iface_lock);
355 spin_unlock_bh(&mcdi->iface_lock);
357 netif_err(efx, hw, efx->net_dev,
358 "MC command 0x%x inlen %d mode %d timed out\n",
359 cmd, (int)inlen, mcdi->mode);
363 /* At the very least we need a memory barrier here to ensure
364 * we pick up changes from efx_mcdi_ev_cpl(). Protect against
365 * a spurious efx_mcdi_ev_cpl() running concurrently by
366 * acquiring the iface_lock. */
367 spin_lock_bh(&mcdi->iface_lock);
369 resplen = mcdi->resplen;
370 spin_unlock_bh(&mcdi->iface_lock);
373 efx_mcdi_copyout(efx, outbuf,
374 min(outlen, mcdi->resplen + 3) & ~0x3);
375 if (outlen_actual != NULL)
376 *outlen_actual = resplen;
377 } else if (cmd == MC_CMD_REBOOT && rc == -EIO)
378 ; /* Don't reset if MC_CMD_REBOOT returns EIO */
379 else if (rc == -EIO || rc == -EINTR) {
380 netif_err(efx, hw, efx->net_dev, "MC fatal error %d\n",
382 efx_schedule_reset(efx, RESET_TYPE_MC_FAILURE);
384 netif_dbg(efx, hw, efx->net_dev,
385 "MC command 0x%x inlen %d failed rc=%d\n",
386 cmd, (int)inlen, -rc);
389 efx_mcdi_release(mcdi);
393 void efx_mcdi_mode_poll(struct efx_nic *efx)
395 struct efx_mcdi_iface *mcdi;
397 if (efx_nic_rev(efx) < EFX_REV_SIENA_A0)
400 mcdi = efx_mcdi(efx);
401 if (mcdi->mode == MCDI_MODE_POLL)
404 /* We can switch from event completion to polled completion, because
405 * mcdi requests are always completed in shared memory. We do this by
406 * switching the mode to POLL'd then completing the request.
407 * efx_mcdi_await_completion() will then call efx_mcdi_poll().
409 * We need an smp_wmb() to synchronise with efx_mcdi_await_completion(),
410 * which efx_mcdi_complete() provides for us.
412 mcdi->mode = MCDI_MODE_POLL;
414 efx_mcdi_complete(mcdi);
417 void efx_mcdi_mode_event(struct efx_nic *efx)
419 struct efx_mcdi_iface *mcdi;
421 if (efx_nic_rev(efx) < EFX_REV_SIENA_A0)
424 mcdi = efx_mcdi(efx);
426 if (mcdi->mode == MCDI_MODE_EVENTS)
429 /* We can't switch from polled to event completion in the middle of a
430 * request, because the completion method is specified in the request.
431 * So acquire the interface to serialise the requestors. We don't need
432 * to acquire the iface_lock to change the mode here, but we do need a
433 * write memory barrier ensure that efx_mcdi_rpc() sees it, which
434 * efx_mcdi_acquire() provides.
436 efx_mcdi_acquire(mcdi);
437 mcdi->mode = MCDI_MODE_EVENTS;
438 efx_mcdi_release(mcdi);
441 static void efx_mcdi_ev_death(struct efx_nic *efx, int rc)
443 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
445 /* If there is an outstanding MCDI request, it has been terminated
446 * either by a BADASSERT or REBOOT event. If the mcdi interface is
447 * in polled mode, then do nothing because the MC reboot handler will
448 * set the header correctly. However, if the mcdi interface is waiting
449 * for a CMDDONE event it won't receive it [and since all MCDI events
450 * are sent to the same queue, we can't be racing with
453 * There's a race here with efx_mcdi_rpc(), because we might receive
454 * a REBOOT event *before* the request has been copied out. In polled
455 * mode (during startup) this is irrelevant, because efx_mcdi_complete()
456 * is ignored. In event mode, this condition is just an edge-case of
457 * receiving a REBOOT event after posting the MCDI request. Did the mc
458 * reboot before or after the copyout? The best we can do always is
459 * just return failure.
461 spin_lock(&mcdi->iface_lock);
462 if (efx_mcdi_complete(mcdi)) {
463 if (mcdi->mode == MCDI_MODE_EVENTS) {
469 /* Nobody was waiting for an MCDI request, so trigger a reset */
470 efx_schedule_reset(efx, RESET_TYPE_MC_FAILURE);
472 spin_unlock(&mcdi->iface_lock);
475 static unsigned int efx_mcdi_event_link_speed[] = {
476 [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100,
477 [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000,
478 [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000,
482 static void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev)
484 u32 flags, fcntl, speed, lpa;
486 speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED);
487 EFX_BUG_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed));
488 speed = efx_mcdi_event_link_speed[speed];
490 flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS);
491 fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL);
492 lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP);
494 /* efx->link_state is only modified by efx_mcdi_phy_get_link(),
495 * which is only run after flushing the event queues. Therefore, it
496 * is safe to modify the link state outside of the mac_lock here.
498 efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl);
500 efx_mcdi_phy_check_fcntl(efx, lpa);
502 efx_link_status_changed(efx);
505 static const char *const sensor_names[] = {
506 [MC_CMD_SENSOR_CONTROLLER_TEMP] = "Controller temp. sensor",
507 [MC_CMD_SENSOR_PHY_COMMON_TEMP] = "PHY shared temp. sensor",
508 [MC_CMD_SENSOR_CONTROLLER_COOLING] = "Controller cooling",
509 [MC_CMD_SENSOR_PHY0_TEMP] = "PHY 0 temp. sensor",
510 [MC_CMD_SENSOR_PHY0_COOLING] = "PHY 0 cooling",
511 [MC_CMD_SENSOR_PHY1_TEMP] = "PHY 1 temp. sensor",
512 [MC_CMD_SENSOR_PHY1_COOLING] = "PHY 1 cooling",
513 [MC_CMD_SENSOR_IN_1V0] = "1.0V supply sensor",
514 [MC_CMD_SENSOR_IN_1V2] = "1.2V supply sensor",
515 [MC_CMD_SENSOR_IN_1V8] = "1.8V supply sensor",
516 [MC_CMD_SENSOR_IN_2V5] = "2.5V supply sensor",
517 [MC_CMD_SENSOR_IN_3V3] = "3.3V supply sensor",
518 [MC_CMD_SENSOR_IN_12V0] = "12V supply sensor"
521 static const char *const sensor_status_names[] = {
522 [MC_CMD_SENSOR_STATE_OK] = "OK",
523 [MC_CMD_SENSOR_STATE_WARNING] = "Warning",
524 [MC_CMD_SENSOR_STATE_FATAL] = "Fatal",
525 [MC_CMD_SENSOR_STATE_BROKEN] = "Device failure",
528 static void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev)
530 unsigned int monitor, state, value;
531 const char *name, *state_txt;
532 monitor = EFX_QWORD_FIELD(*ev, MCDI_EVENT_SENSOREVT_MONITOR);
533 state = EFX_QWORD_FIELD(*ev, MCDI_EVENT_SENSOREVT_STATE);
534 value = EFX_QWORD_FIELD(*ev, MCDI_EVENT_SENSOREVT_VALUE);
535 /* Deal gracefully with the board having more drivers than we
536 * know about, but do not expect new sensor states. */
537 name = (monitor >= ARRAY_SIZE(sensor_names))
538 ? "No sensor name available" :
539 sensor_names[monitor];
540 EFX_BUG_ON_PARANOID(state >= ARRAY_SIZE(sensor_status_names));
541 state_txt = sensor_status_names[state];
543 netif_err(efx, hw, efx->net_dev,
544 "Sensor %d (%s) reports condition '%s' for raw value %d\n",
545 monitor, name, state_txt, value);
548 /* Called from falcon_process_eventq for MCDI events */
549 void efx_mcdi_process_event(struct efx_channel *channel,
552 struct efx_nic *efx = channel->efx;
553 int code = EFX_QWORD_FIELD(*event, MCDI_EVENT_CODE);
554 u32 data = EFX_QWORD_FIELD(*event, MCDI_EVENT_DATA);
557 case MCDI_EVENT_CODE_BADSSERT:
558 netif_err(efx, hw, efx->net_dev,
559 "MC watchdog or assertion failure at 0x%x\n", data);
560 efx_mcdi_ev_death(efx, EINTR);
563 case MCDI_EVENT_CODE_PMNOTICE:
564 netif_info(efx, wol, efx->net_dev, "MCDI PM event.\n");
567 case MCDI_EVENT_CODE_CMDDONE:
569 MCDI_EVENT_FIELD(*event, CMDDONE_SEQ),
570 MCDI_EVENT_FIELD(*event, CMDDONE_DATALEN),
571 MCDI_EVENT_FIELD(*event, CMDDONE_ERRNO));
574 case MCDI_EVENT_CODE_LINKCHANGE:
575 efx_mcdi_process_link_change(efx, event);
577 case MCDI_EVENT_CODE_SENSOREVT:
578 efx_mcdi_sensor_event(efx, event);
580 case MCDI_EVENT_CODE_SCHEDERR:
581 netif_info(efx, hw, efx->net_dev,
582 "MC Scheduler error address=0x%x\n", data);
584 case MCDI_EVENT_CODE_REBOOT:
585 netif_info(efx, hw, efx->net_dev, "MC Reboot\n");
586 efx_mcdi_ev_death(efx, EIO);
588 case MCDI_EVENT_CODE_MAC_STATS_DMA:
589 /* MAC stats are gather lazily. We can ignore this. */
593 netif_err(efx, hw, efx->net_dev, "Unknown MCDI event 0x%x\n",
598 /**************************************************************************
600 * Specific request functions
602 **************************************************************************
605 void efx_mcdi_print_fwver(struct efx_nic *efx, char *buf, size_t len)
607 u8 outbuf[ALIGN(MC_CMD_GET_VERSION_OUT_LEN, 4)];
609 const __le16 *ver_words;
612 BUILD_BUG_ON(MC_CMD_GET_VERSION_IN_LEN != 0);
614 rc = efx_mcdi_rpc(efx, MC_CMD_GET_VERSION, NULL, 0,
615 outbuf, sizeof(outbuf), &outlength);
619 if (outlength < MC_CMD_GET_VERSION_OUT_LEN) {
624 ver_words = (__le16 *)MCDI_PTR(outbuf, GET_VERSION_OUT_VERSION);
625 snprintf(buf, len, "%u.%u.%u.%u",
626 le16_to_cpu(ver_words[0]), le16_to_cpu(ver_words[1]),
627 le16_to_cpu(ver_words[2]), le16_to_cpu(ver_words[3]));
631 netif_err(efx, probe, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
635 int efx_mcdi_drv_attach(struct efx_nic *efx, bool driver_operating,
638 u8 inbuf[MC_CMD_DRV_ATTACH_IN_LEN];
639 u8 outbuf[MC_CMD_DRV_ATTACH_OUT_LEN];
643 MCDI_SET_DWORD(inbuf, DRV_ATTACH_IN_NEW_STATE,
644 driver_operating ? 1 : 0);
645 MCDI_SET_DWORD(inbuf, DRV_ATTACH_IN_UPDATE, 1);
647 rc = efx_mcdi_rpc(efx, MC_CMD_DRV_ATTACH, inbuf, sizeof(inbuf),
648 outbuf, sizeof(outbuf), &outlen);
651 if (outlen < MC_CMD_DRV_ATTACH_OUT_LEN) {
656 if (was_attached != NULL)
657 *was_attached = MCDI_DWORD(outbuf, DRV_ATTACH_OUT_OLD_STATE);
661 netif_err(efx, probe, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
665 int efx_mcdi_get_board_cfg(struct efx_nic *efx, u8 *mac_address,
666 u16 *fw_subtype_list)
668 uint8_t outbuf[MC_CMD_GET_BOARD_CFG_OUT_LENMIN];
670 int port_num = efx_port_num(efx);
674 BUILD_BUG_ON(MC_CMD_GET_BOARD_CFG_IN_LEN != 0);
676 rc = efx_mcdi_rpc(efx, MC_CMD_GET_BOARD_CFG, NULL, 0,
677 outbuf, sizeof(outbuf), &outlen);
681 if (outlen < MC_CMD_GET_BOARD_CFG_OUT_LENMIN) {
687 ? MC_CMD_GET_BOARD_CFG_OUT_MAC_ADDR_BASE_PORT1_OFST
688 : MC_CMD_GET_BOARD_CFG_OUT_MAC_ADDR_BASE_PORT0_OFST;
690 memcpy(mac_address, outbuf + offset, ETH_ALEN);
692 memcpy(fw_subtype_list,
693 outbuf + MC_CMD_GET_BOARD_CFG_OUT_FW_SUBTYPE_LIST_OFST,
694 MC_CMD_GET_BOARD_CFG_OUT_FW_SUBTYPE_LIST_MINNUM *
695 sizeof(fw_subtype_list[0]));
700 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d len=%d\n",
701 __func__, rc, (int)outlen);
706 int efx_mcdi_log_ctrl(struct efx_nic *efx, bool evq, bool uart, u32 dest_evq)
708 u8 inbuf[MC_CMD_LOG_CTRL_IN_LEN];
713 dest |= MC_CMD_LOG_CTRL_IN_LOG_DEST_UART;
715 dest |= MC_CMD_LOG_CTRL_IN_LOG_DEST_EVQ;
717 MCDI_SET_DWORD(inbuf, LOG_CTRL_IN_LOG_DEST, dest);
718 MCDI_SET_DWORD(inbuf, LOG_CTRL_IN_LOG_DEST_EVQ, dest_evq);
720 BUILD_BUG_ON(MC_CMD_LOG_CTRL_OUT_LEN != 0);
722 rc = efx_mcdi_rpc(efx, MC_CMD_LOG_CTRL, inbuf, sizeof(inbuf),
730 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
734 int efx_mcdi_nvram_types(struct efx_nic *efx, u32 *nvram_types_out)
736 u8 outbuf[MC_CMD_NVRAM_TYPES_OUT_LEN];
740 BUILD_BUG_ON(MC_CMD_NVRAM_TYPES_IN_LEN != 0);
742 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_TYPES, NULL, 0,
743 outbuf, sizeof(outbuf), &outlen);
746 if (outlen < MC_CMD_NVRAM_TYPES_OUT_LEN) {
751 *nvram_types_out = MCDI_DWORD(outbuf, NVRAM_TYPES_OUT_TYPES);
755 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
760 int efx_mcdi_nvram_info(struct efx_nic *efx, unsigned int type,
761 size_t *size_out, size_t *erase_size_out,
764 u8 inbuf[MC_CMD_NVRAM_INFO_IN_LEN];
765 u8 outbuf[MC_CMD_NVRAM_INFO_OUT_LEN];
769 MCDI_SET_DWORD(inbuf, NVRAM_INFO_IN_TYPE, type);
771 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_INFO, inbuf, sizeof(inbuf),
772 outbuf, sizeof(outbuf), &outlen);
775 if (outlen < MC_CMD_NVRAM_INFO_OUT_LEN) {
780 *size_out = MCDI_DWORD(outbuf, NVRAM_INFO_OUT_SIZE);
781 *erase_size_out = MCDI_DWORD(outbuf, NVRAM_INFO_OUT_ERASESIZE);
782 *protected_out = !!(MCDI_DWORD(outbuf, NVRAM_INFO_OUT_FLAGS) &
783 (1 << MC_CMD_NVRAM_INFO_OUT_PROTECTED_LBN));
787 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
791 int efx_mcdi_nvram_update_start(struct efx_nic *efx, unsigned int type)
793 u8 inbuf[MC_CMD_NVRAM_UPDATE_START_IN_LEN];
796 MCDI_SET_DWORD(inbuf, NVRAM_UPDATE_START_IN_TYPE, type);
798 BUILD_BUG_ON(MC_CMD_NVRAM_UPDATE_START_OUT_LEN != 0);
800 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_UPDATE_START, inbuf, sizeof(inbuf),
808 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
812 int efx_mcdi_nvram_read(struct efx_nic *efx, unsigned int type,
813 loff_t offset, u8 *buffer, size_t length)
815 u8 inbuf[MC_CMD_NVRAM_READ_IN_LEN];
816 u8 outbuf[MC_CMD_NVRAM_READ_OUT_LEN(EFX_MCDI_NVRAM_LEN_MAX)];
820 MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_TYPE, type);
821 MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_OFFSET, offset);
822 MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_LENGTH, length);
824 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_READ, inbuf, sizeof(inbuf),
825 outbuf, sizeof(outbuf), &outlen);
829 memcpy(buffer, MCDI_PTR(outbuf, NVRAM_READ_OUT_READ_BUFFER), length);
833 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
837 int efx_mcdi_nvram_write(struct efx_nic *efx, unsigned int type,
838 loff_t offset, const u8 *buffer, size_t length)
840 u8 inbuf[MC_CMD_NVRAM_WRITE_IN_LEN(EFX_MCDI_NVRAM_LEN_MAX)];
843 MCDI_SET_DWORD(inbuf, NVRAM_WRITE_IN_TYPE, type);
844 MCDI_SET_DWORD(inbuf, NVRAM_WRITE_IN_OFFSET, offset);
845 MCDI_SET_DWORD(inbuf, NVRAM_WRITE_IN_LENGTH, length);
846 memcpy(MCDI_PTR(inbuf, NVRAM_WRITE_IN_WRITE_BUFFER), buffer, length);
848 BUILD_BUG_ON(MC_CMD_NVRAM_WRITE_OUT_LEN != 0);
850 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_WRITE, inbuf,
851 ALIGN(MC_CMD_NVRAM_WRITE_IN_LEN(length), 4),
859 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
863 int efx_mcdi_nvram_erase(struct efx_nic *efx, unsigned int type,
864 loff_t offset, size_t length)
866 u8 inbuf[MC_CMD_NVRAM_ERASE_IN_LEN];
869 MCDI_SET_DWORD(inbuf, NVRAM_ERASE_IN_TYPE, type);
870 MCDI_SET_DWORD(inbuf, NVRAM_ERASE_IN_OFFSET, offset);
871 MCDI_SET_DWORD(inbuf, NVRAM_ERASE_IN_LENGTH, length);
873 BUILD_BUG_ON(MC_CMD_NVRAM_ERASE_OUT_LEN != 0);
875 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_ERASE, inbuf, sizeof(inbuf),
883 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
887 int efx_mcdi_nvram_update_finish(struct efx_nic *efx, unsigned int type)
889 u8 inbuf[MC_CMD_NVRAM_UPDATE_FINISH_IN_LEN];
892 MCDI_SET_DWORD(inbuf, NVRAM_UPDATE_FINISH_IN_TYPE, type);
894 BUILD_BUG_ON(MC_CMD_NVRAM_UPDATE_FINISH_OUT_LEN != 0);
896 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_UPDATE_FINISH, inbuf, sizeof(inbuf),
904 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
908 static int efx_mcdi_nvram_test(struct efx_nic *efx, unsigned int type)
910 u8 inbuf[MC_CMD_NVRAM_TEST_IN_LEN];
911 u8 outbuf[MC_CMD_NVRAM_TEST_OUT_LEN];
914 MCDI_SET_DWORD(inbuf, NVRAM_TEST_IN_TYPE, type);
916 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_TEST, inbuf, sizeof(inbuf),
917 outbuf, sizeof(outbuf), NULL);
921 switch (MCDI_DWORD(outbuf, NVRAM_TEST_OUT_RESULT)) {
922 case MC_CMD_NVRAM_TEST_PASS:
923 case MC_CMD_NVRAM_TEST_NOTSUPP:
930 int efx_mcdi_nvram_test_all(struct efx_nic *efx)
936 rc = efx_mcdi_nvram_types(efx, &nvram_types);
941 while (nvram_types != 0) {
942 if (nvram_types & 1) {
943 rc = efx_mcdi_nvram_test(efx, type);
954 netif_err(efx, hw, efx->net_dev, "%s: failed type=%u\n",
957 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
961 static int efx_mcdi_read_assertion(struct efx_nic *efx)
963 u8 inbuf[MC_CMD_GET_ASSERTS_IN_LEN];
964 u8 outbuf[MC_CMD_GET_ASSERTS_OUT_LEN];
965 unsigned int flags, index, ofst;
971 /* Attempt to read any stored assertion state before we reboot
972 * the mcfw out of the assertion handler. Retry twice, once
973 * because a boot-time assertion might cause this command to fail
974 * with EINTR. And once again because GET_ASSERTS can race with
975 * MC_CMD_REBOOT running on the other port. */
978 MCDI_SET_DWORD(inbuf, GET_ASSERTS_IN_CLEAR, 1);
979 rc = efx_mcdi_rpc(efx, MC_CMD_GET_ASSERTS,
980 inbuf, MC_CMD_GET_ASSERTS_IN_LEN,
981 outbuf, sizeof(outbuf), &outlen);
982 } while ((rc == -EINTR || rc == -EIO) && retry-- > 0);
986 if (outlen < MC_CMD_GET_ASSERTS_OUT_LEN)
989 /* Print out any recorded assertion state */
990 flags = MCDI_DWORD(outbuf, GET_ASSERTS_OUT_GLOBAL_FLAGS);
991 if (flags == MC_CMD_GET_ASSERTS_FLAGS_NO_FAILS)
994 reason = (flags == MC_CMD_GET_ASSERTS_FLAGS_SYS_FAIL)
995 ? "system-level assertion"
996 : (flags == MC_CMD_GET_ASSERTS_FLAGS_THR_FAIL)
997 ? "thread-level assertion"
998 : (flags == MC_CMD_GET_ASSERTS_FLAGS_WDOG_FIRED)
1000 : "unknown assertion";
1001 netif_err(efx, hw, efx->net_dev,
1002 "MCPU %s at PC = 0x%.8x in thread 0x%.8x\n", reason,
1003 MCDI_DWORD(outbuf, GET_ASSERTS_OUT_SAVED_PC_OFFS),
1004 MCDI_DWORD(outbuf, GET_ASSERTS_OUT_THREAD_OFFS));
1006 /* Print out the registers */
1007 ofst = MC_CMD_GET_ASSERTS_OUT_GP_REGS_OFFS_OFST;
1008 for (index = 1; index < 32; index++) {
1009 netif_err(efx, hw, efx->net_dev, "R%.2d (?): 0x%.8x\n", index,
1010 MCDI_DWORD2(outbuf, ofst));
1011 ofst += sizeof(efx_dword_t);
1017 static void efx_mcdi_exit_assertion(struct efx_nic *efx)
1019 u8 inbuf[MC_CMD_REBOOT_IN_LEN];
1021 /* Atomically reboot the mcfw out of the assertion handler */
1022 BUILD_BUG_ON(MC_CMD_REBOOT_OUT_LEN != 0);
1023 MCDI_SET_DWORD(inbuf, REBOOT_IN_FLAGS,
1024 MC_CMD_REBOOT_FLAGS_AFTER_ASSERTION);
1025 efx_mcdi_rpc(efx, MC_CMD_REBOOT, inbuf, MC_CMD_REBOOT_IN_LEN,
1029 int efx_mcdi_handle_assertion(struct efx_nic *efx)
1033 rc = efx_mcdi_read_assertion(efx);
1037 efx_mcdi_exit_assertion(efx);
1042 void efx_mcdi_set_id_led(struct efx_nic *efx, enum efx_led_mode mode)
1044 u8 inbuf[MC_CMD_SET_ID_LED_IN_LEN];
1047 BUILD_BUG_ON(EFX_LED_OFF != MC_CMD_LED_OFF);
1048 BUILD_BUG_ON(EFX_LED_ON != MC_CMD_LED_ON);
1049 BUILD_BUG_ON(EFX_LED_DEFAULT != MC_CMD_LED_DEFAULT);
1051 BUILD_BUG_ON(MC_CMD_SET_ID_LED_OUT_LEN != 0);
1053 MCDI_SET_DWORD(inbuf, SET_ID_LED_IN_STATE, mode);
1055 rc = efx_mcdi_rpc(efx, MC_CMD_SET_ID_LED, inbuf, sizeof(inbuf),
1058 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
1062 int efx_mcdi_reset_port(struct efx_nic *efx)
1064 int rc = efx_mcdi_rpc(efx, MC_CMD_ENTITY_RESET, NULL, 0, NULL, 0, NULL);
1066 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
1071 int efx_mcdi_reset_mc(struct efx_nic *efx)
1073 u8 inbuf[MC_CMD_REBOOT_IN_LEN];
1076 BUILD_BUG_ON(MC_CMD_REBOOT_OUT_LEN != 0);
1077 MCDI_SET_DWORD(inbuf, REBOOT_IN_FLAGS, 0);
1078 rc = efx_mcdi_rpc(efx, MC_CMD_REBOOT, inbuf, sizeof(inbuf),
1080 /* White is black, and up is down */
1085 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
1089 static int efx_mcdi_wol_filter_set(struct efx_nic *efx, u32 type,
1090 const u8 *mac, int *id_out)
1092 u8 inbuf[MC_CMD_WOL_FILTER_SET_IN_LEN];
1093 u8 outbuf[MC_CMD_WOL_FILTER_SET_OUT_LEN];
1097 MCDI_SET_DWORD(inbuf, WOL_FILTER_SET_IN_WOL_TYPE, type);
1098 MCDI_SET_DWORD(inbuf, WOL_FILTER_SET_IN_FILTER_MODE,
1099 MC_CMD_FILTER_MODE_SIMPLE);
1100 memcpy(MCDI_PTR(inbuf, WOL_FILTER_SET_IN_MAGIC_MAC), mac, ETH_ALEN);
1102 rc = efx_mcdi_rpc(efx, MC_CMD_WOL_FILTER_SET, inbuf, sizeof(inbuf),
1103 outbuf, sizeof(outbuf), &outlen);
1107 if (outlen < MC_CMD_WOL_FILTER_SET_OUT_LEN) {
1112 *id_out = (int)MCDI_DWORD(outbuf, WOL_FILTER_SET_OUT_FILTER_ID);
1118 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
1125 efx_mcdi_wol_filter_set_magic(struct efx_nic *efx, const u8 *mac, int *id_out)
1127 return efx_mcdi_wol_filter_set(efx, MC_CMD_WOL_TYPE_MAGIC, mac, id_out);
1131 int efx_mcdi_wol_filter_get_magic(struct efx_nic *efx, int *id_out)
1133 u8 outbuf[MC_CMD_WOL_FILTER_GET_OUT_LEN];
1137 rc = efx_mcdi_rpc(efx, MC_CMD_WOL_FILTER_GET, NULL, 0,
1138 outbuf, sizeof(outbuf), &outlen);
1142 if (outlen < MC_CMD_WOL_FILTER_GET_OUT_LEN) {
1147 *id_out = (int)MCDI_DWORD(outbuf, WOL_FILTER_GET_OUT_FILTER_ID);
1153 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
1158 int efx_mcdi_wol_filter_remove(struct efx_nic *efx, int id)
1160 u8 inbuf[MC_CMD_WOL_FILTER_REMOVE_IN_LEN];
1163 MCDI_SET_DWORD(inbuf, WOL_FILTER_REMOVE_IN_FILTER_ID, (u32)id);
1165 rc = efx_mcdi_rpc(efx, MC_CMD_WOL_FILTER_REMOVE, inbuf, sizeof(inbuf),
1173 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
1178 int efx_mcdi_wol_filter_reset(struct efx_nic *efx)
1182 rc = efx_mcdi_rpc(efx, MC_CMD_WOL_FILTER_RESET, NULL, 0, NULL, 0, NULL);
1189 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);