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1/****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2008-2011 Solarflare Communications Inc.
4 *
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.
8 */
9
10#include <linux/delay.h>
11#include "net_driver.h"
12#include "nic.h"
13#include "io.h"
14#include "regs.h"
15#include "mcdi_pcol.h"
16#include "phy.h"
17
18/**************************************************************************
19 *
20 * Management-Controller-to-Driver Interface
21 *
22 **************************************************************************
23 */
24
25#define MCDI_RPC_TIMEOUT 10 /*seconds */
26
27#define MCDI_PDU(efx) \
28 (efx_port_num(efx) ? MC_SMEM_P1_PDU_OFST : MC_SMEM_P0_PDU_OFST)
29#define MCDI_DOORBELL(efx) \
30 (efx_port_num(efx) ? MC_SMEM_P1_DOORBELL_OFST : MC_SMEM_P0_DOORBELL_OFST)
31#define MCDI_STATUS(efx) \
32 (efx_port_num(efx) ? MC_SMEM_P1_STATUS_OFST : MC_SMEM_P0_STATUS_OFST)
33
34/* A reboot/assertion causes the MCDI status word to be set after the
35 * command word is set or a REBOOT event is sent. If we notice a reboot
36 * via these mechanisms then wait 10ms for the status word to be set. */
37#define MCDI_STATUS_DELAY_US 100
38#define MCDI_STATUS_DELAY_COUNT 100
39#define MCDI_STATUS_SLEEP_MS \
40 (MCDI_STATUS_DELAY_US * MCDI_STATUS_DELAY_COUNT / 1000)
41
42#define SEQ_MASK \
43 EFX_MASK32(EFX_WIDTH(MCDI_HEADER_SEQ))
44
45static inline struct efx_mcdi_iface *efx_mcdi(struct efx_nic *efx)
46{
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;
51}
52
53void efx_mcdi_init(struct efx_nic *efx)
54{
55 struct efx_mcdi_iface *mcdi;
56
57 if (efx_nic_rev(efx) < EFX_REV_SIENA_A0)
58 return;
59
60 mcdi = efx_mcdi(efx);
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;
65
66 (void) efx_mcdi_poll_reboot(efx);
67}
68
69static void efx_mcdi_copyin(struct efx_nic *efx, unsigned cmd,
70 const u8 *inbuf, size_t inlen)
71{
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);
75 unsigned int i;
76 efx_dword_t hdr;
77 u32 xflags, seqno;
78
79 BUG_ON(atomic_read(&mcdi->state) == MCDI_STATE_QUIESCENT);
80 BUG_ON(inlen & 3 || inlen >= MC_SMEM_PDU_LEN);
81
82 seqno = mcdi->seqno & SEQ_MASK;
83 xflags = 0;
84 if (mcdi->mode == MCDI_MODE_EVENTS)
85 xflags |= MCDI_HEADER_XFLAGS_EVREQ;
86
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);
94
95 efx_writed(efx, &hdr, pdu);
96
97 for (i = 0; i < inlen; i += 4)
98 _efx_writed(efx, *((__le32 *)(inbuf + i)), pdu + 4 + i);
99
100 /* Ensure the payload is written out before the header */
101 wmb();
102
103 /* ring the doorbell with a distinctive value */
104 _efx_writed(efx, (__force __le32) 0x45789abc, doorbell);
105}
106
107static void efx_mcdi_copyout(struct efx_nic *efx, u8 *outbuf, size_t outlen)
108{
109 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
110 unsigned int pdu = FR_CZ_MC_TREG_SMEM + MCDI_PDU(efx);
111 int i;
112
113 BUG_ON(atomic_read(&mcdi->state) == MCDI_STATE_QUIESCENT);
114 BUG_ON(outlen & 3 || outlen >= MC_SMEM_PDU_LEN);
115
116 for (i = 0; i < outlen; i += 4)
117 *((__le32 *)(outbuf + i)) = _efx_readd(efx, pdu + 4 + i);
118}
119
120static int efx_mcdi_poll(struct efx_nic *efx)
121{
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;
127 efx_dword_t reg;
128
129 /* Check for a reboot atomically with respect to efx_mcdi_copyout() */
130 rc = -efx_mcdi_poll_reboot(efx);
131 if (rc)
132 goto out;
133
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)
137 */
138 spins = TICK_USEC;
139 finish = get_seconds() + MCDI_RPC_TIMEOUT;
140
141 while (1) {
142 if (spins != 0) {
143 --spins;
144 udelay(1);
145 } else {
146 schedule_timeout_uninterruptible(1);
147 }
148
149 time = get_seconds();
150
151 rmb();
152 efx_readd(efx, ®, pdu);
153
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))
159 break;
160
161 if (time >= finish)
162 return -ETIMEDOUT;
163 }
164
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);
169
170 if (error && mcdi->resplen == 0) {
171 netif_err(efx, hw, efx->net_dev, "MC rebooted\n");
172 rc = EIO;
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);
177 rc = EIO;
178 } else if (error) {
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: \
183 rc = name; \
184 break
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
194 default:
195 rc = EIO;
196 break;
197 }
198 } else
199 rc = 0;
200
201out:
202 mcdi->resprc = rc;
203 if (rc)
204 mcdi->resplen = 0;
205
206 /* Return rc=0 like wait_event_timeout() */
207 return 0;
208}
209
210/* Test and clear MC-rebooted flag for this port/function */
211int efx_mcdi_poll_reboot(struct efx_nic *efx)
212{
213 unsigned int addr = FR_CZ_MC_TREG_SMEM + MCDI_STATUS(efx);
214 efx_dword_t reg;
215 uint32_t value;
216
217 if (efx_nic_rev(efx) < EFX_REV_SIENA_A0)
218 return false;
219
220 efx_readd(efx, ®, addr);
221 value = EFX_DWORD_FIELD(reg, EFX_DWORD_0);
222
223 if (value == 0)
224 return 0;
225
226 EFX_ZERO_DWORD(reg);
227 efx_writed(efx, ®, addr);
228
229 if (value == MC_STATUS_DWORD_ASSERT)
230 return -EINTR;
231 else
232 return -EIO;
233}
234
235static void efx_mcdi_acquire(struct efx_mcdi_iface *mcdi)
236{
237 /* Wait until the interface becomes QUIESCENT and we win the race
238 * to mark it RUNNING. */
239 wait_event(mcdi->wq,
240 atomic_cmpxchg(&mcdi->state,
241 MCDI_STATE_QUIESCENT,
242 MCDI_STATE_RUNNING)
243 == MCDI_STATE_QUIESCENT);
244}
245
246static int efx_mcdi_await_completion(struct efx_nic *efx)
247{
248 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
249
250 if (wait_event_timeout(
251 mcdi->wq,
252 atomic_read(&mcdi->state) == MCDI_STATE_COMPLETED,
253 msecs_to_jiffies(MCDI_RPC_TIMEOUT * 1000)) == 0)
254 return -ETIMEDOUT;
255
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.
260 *
261 * We need an smp_rmb() to synchronise with efx_mcdi_mode_poll(), which
262 * wait_event_timeout() implicitly provides.
263 */
264 if (mcdi->mode == MCDI_MODE_POLL)
265 return efx_mcdi_poll(efx);
266
267 return 0;
268}
269
270static bool efx_mcdi_complete(struct efx_mcdi_iface *mcdi)
271{
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].
277 */
278 if (atomic_cmpxchg(&mcdi->state,
279 MCDI_STATE_RUNNING,
280 MCDI_STATE_COMPLETED) == MCDI_STATE_RUNNING) {
281 wake_up(&mcdi->wq);
282 return true;
283 }
284
285 return false;
286}
287
288static void efx_mcdi_release(struct efx_mcdi_iface *mcdi)
289{
290 atomic_set(&mcdi->state, MCDI_STATE_QUIESCENT);
291 wake_up(&mcdi->wq);
292}
293
294static void efx_mcdi_ev_cpl(struct efx_nic *efx, unsigned int seqno,
295 unsigned int datalen, unsigned int errno)
296{
297 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
298 bool wake = false;
299
300 spin_lock(&mcdi->iface_lock);
301
302 if ((seqno ^ mcdi->seqno) & SEQ_MASK) {
303 if (mcdi->credits)
304 /* The request has been cancelled */
305 --mcdi->credits;
306 else
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);
310 } else {
311 mcdi->resprc = errno;
312 mcdi->resplen = datalen;
313
314 wake = true;
315 }
316
317 spin_unlock(&mcdi->iface_lock);
318
319 if (wake)
320 efx_mcdi_complete(mcdi);
321}
322
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. */
325int 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)
328{
329 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
330 int rc;
331 BUG_ON(efx_nic_rev(efx) < EFX_REV_SIENA_A0);
332
333 efx_mcdi_acquire(mcdi);
334
335 /* Serialise with efx_mcdi_ev_cpl() and efx_mcdi_ev_death() */
336 spin_lock_bh(&mcdi->iface_lock);
337 ++mcdi->seqno;
338 spin_unlock_bh(&mcdi->iface_lock);
339
340 efx_mcdi_copyin(efx, cmd, inbuf, inlen);
341
342 if (mcdi->mode == MCDI_MODE_POLL)
343 rc = efx_mcdi_poll(efx);
344 else
345 rc = efx_mcdi_await_completion(efx);
346
347 if (rc != 0) {
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.
351 */
352 spin_lock_bh(&mcdi->iface_lock);
353 ++mcdi->seqno;
354 ++mcdi->credits;
355 spin_unlock_bh(&mcdi->iface_lock);
356
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);
360 } else {
361 size_t resplen;
362
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);
368 rc = -mcdi->resprc;
369 resplen = mcdi->resplen;
370 spin_unlock_bh(&mcdi->iface_lock);
371
372 if (rc == 0) {
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",
381 -rc);
382 efx_schedule_reset(efx, RESET_TYPE_MC_FAILURE);
383 } else
384 netif_dbg(efx, hw, efx->net_dev,
385 "MC command 0x%x inlen %d failed rc=%d\n",
386 cmd, (int)inlen, -rc);
387
388 if (rc == -EIO || rc == -EINTR) {
389 msleep(MCDI_STATUS_SLEEP_MS);
390 efx_mcdi_poll_reboot(efx);
391 }
392 }
393
394 efx_mcdi_release(mcdi);
395 return rc;
396}
397
398void efx_mcdi_mode_poll(struct efx_nic *efx)
399{
400 struct efx_mcdi_iface *mcdi;
401
402 if (efx_nic_rev(efx) < EFX_REV_SIENA_A0)
403 return;
404
405 mcdi = efx_mcdi(efx);
406 if (mcdi->mode == MCDI_MODE_POLL)
407 return;
408
409 /* We can switch from event completion to polled completion, because
410 * mcdi requests are always completed in shared memory. We do this by
411 * switching the mode to POLL'd then completing the request.
412 * efx_mcdi_await_completion() will then call efx_mcdi_poll().
413 *
414 * We need an smp_wmb() to synchronise with efx_mcdi_await_completion(),
415 * which efx_mcdi_complete() provides for us.
416 */
417 mcdi->mode = MCDI_MODE_POLL;
418
419 efx_mcdi_complete(mcdi);
420}
421
422void efx_mcdi_mode_event(struct efx_nic *efx)
423{
424 struct efx_mcdi_iface *mcdi;
425
426 if (efx_nic_rev(efx) < EFX_REV_SIENA_A0)
427 return;
428
429 mcdi = efx_mcdi(efx);
430
431 if (mcdi->mode == MCDI_MODE_EVENTS)
432 return;
433
434 /* We can't switch from polled to event completion in the middle of a
435 * request, because the completion method is specified in the request.
436 * So acquire the interface to serialise the requestors. We don't need
437 * to acquire the iface_lock to change the mode here, but we do need a
438 * write memory barrier ensure that efx_mcdi_rpc() sees it, which
439 * efx_mcdi_acquire() provides.
440 */
441 efx_mcdi_acquire(mcdi);
442 mcdi->mode = MCDI_MODE_EVENTS;
443 efx_mcdi_release(mcdi);
444}
445
446static void efx_mcdi_ev_death(struct efx_nic *efx, int rc)
447{
448 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
449
450 /* If there is an outstanding MCDI request, it has been terminated
451 * either by a BADASSERT or REBOOT event. If the mcdi interface is
452 * in polled mode, then do nothing because the MC reboot handler will
453 * set the header correctly. However, if the mcdi interface is waiting
454 * for a CMDDONE event it won't receive it [and since all MCDI events
455 * are sent to the same queue, we can't be racing with
456 * efx_mcdi_ev_cpl()]
457 *
458 * There's a race here with efx_mcdi_rpc(), because we might receive
459 * a REBOOT event *before* the request has been copied out. In polled
460 * mode (during startup) this is irrelevant, because efx_mcdi_complete()
461 * is ignored. In event mode, this condition is just an edge-case of
462 * receiving a REBOOT event after posting the MCDI request. Did the mc
463 * reboot before or after the copyout? The best we can do always is
464 * just return failure.
465 */
466 spin_lock(&mcdi->iface_lock);
467 if (efx_mcdi_complete(mcdi)) {
468 if (mcdi->mode == MCDI_MODE_EVENTS) {
469 mcdi->resprc = rc;
470 mcdi->resplen = 0;
471 ++mcdi->credits;
472 }
473 } else {
474 int count;
475
476 /* Nobody was waiting for an MCDI request, so trigger a reset */
477 efx_schedule_reset(efx, RESET_TYPE_MC_FAILURE);
478
479 /* Consume the status word since efx_mcdi_rpc_finish() won't */
480 for (count = 0; count < MCDI_STATUS_DELAY_COUNT; ++count) {
481 if (efx_mcdi_poll_reboot(efx))
482 break;
483 udelay(MCDI_STATUS_DELAY_US);
484 }
485 }
486
487 spin_unlock(&mcdi->iface_lock);
488}
489
490static unsigned int efx_mcdi_event_link_speed[] = {
491 [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100,
492 [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000,
493 [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000,
494};
495
496
497static void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev)
498{
499 u32 flags, fcntl, speed, lpa;
500
501 speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED);
502 EFX_BUG_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed));
503 speed = efx_mcdi_event_link_speed[speed];
504
505 flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS);
506 fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL);
507 lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP);
508
509 /* efx->link_state is only modified by efx_mcdi_phy_get_link(),
510 * which is only run after flushing the event queues. Therefore, it
511 * is safe to modify the link state outside of the mac_lock here.
512 */
513 efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl);
514
515 efx_mcdi_phy_check_fcntl(efx, lpa);
516
517 efx_link_status_changed(efx);
518}
519
520/* Called from falcon_process_eventq for MCDI events */
521void efx_mcdi_process_event(struct efx_channel *channel,
522 efx_qword_t *event)
523{
524 struct efx_nic *efx = channel->efx;
525 int code = EFX_QWORD_FIELD(*event, MCDI_EVENT_CODE);
526 u32 data = EFX_QWORD_FIELD(*event, MCDI_EVENT_DATA);
527
528 switch (code) {
529 case MCDI_EVENT_CODE_BADSSERT:
530 netif_err(efx, hw, efx->net_dev,
531 "MC watchdog or assertion failure at 0x%x\n", data);
532 efx_mcdi_ev_death(efx, EINTR);
533 break;
534
535 case MCDI_EVENT_CODE_PMNOTICE:
536 netif_info(efx, wol, efx->net_dev, "MCDI PM event.\n");
537 break;
538
539 case MCDI_EVENT_CODE_CMDDONE:
540 efx_mcdi_ev_cpl(efx,
541 MCDI_EVENT_FIELD(*event, CMDDONE_SEQ),
542 MCDI_EVENT_FIELD(*event, CMDDONE_DATALEN),
543 MCDI_EVENT_FIELD(*event, CMDDONE_ERRNO));
544 break;
545
546 case MCDI_EVENT_CODE_LINKCHANGE:
547 efx_mcdi_process_link_change(efx, event);
548 break;
549 case MCDI_EVENT_CODE_SENSOREVT:
550 efx_mcdi_sensor_event(efx, event);
551 break;
552 case MCDI_EVENT_CODE_SCHEDERR:
553 netif_info(efx, hw, efx->net_dev,
554 "MC Scheduler error address=0x%x\n", data);
555 break;
556 case MCDI_EVENT_CODE_REBOOT:
557 netif_info(efx, hw, efx->net_dev, "MC Reboot\n");
558 efx_mcdi_ev_death(efx, EIO);
559 break;
560 case MCDI_EVENT_CODE_MAC_STATS_DMA:
561 /* MAC stats are gather lazily. We can ignore this. */
562 break;
563 case MCDI_EVENT_CODE_FLR:
564 efx_sriov_flr(efx, MCDI_EVENT_FIELD(*event, FLR_VF));
565 break;
566
567 default:
568 netif_err(efx, hw, efx->net_dev, "Unknown MCDI event 0x%x\n",
569 code);
570 }
571}
572
573/**************************************************************************
574 *
575 * Specific request functions
576 *
577 **************************************************************************
578 */
579
580void efx_mcdi_print_fwver(struct efx_nic *efx, char *buf, size_t len)
581{
582 u8 outbuf[ALIGN(MC_CMD_GET_VERSION_OUT_LEN, 4)];
583 size_t outlength;
584 const __le16 *ver_words;
585 int rc;
586
587 BUILD_BUG_ON(MC_CMD_GET_VERSION_IN_LEN != 0);
588
589 rc = efx_mcdi_rpc(efx, MC_CMD_GET_VERSION, NULL, 0,
590 outbuf, sizeof(outbuf), &outlength);
591 if (rc)
592 goto fail;
593
594 if (outlength < MC_CMD_GET_VERSION_OUT_LEN) {
595 rc = -EIO;
596 goto fail;
597 }
598
599 ver_words = (__le16 *)MCDI_PTR(outbuf, GET_VERSION_OUT_VERSION);
600 snprintf(buf, len, "%u.%u.%u.%u",
601 le16_to_cpu(ver_words[0]), le16_to_cpu(ver_words[1]),
602 le16_to_cpu(ver_words[2]), le16_to_cpu(ver_words[3]));
603 return;
604
605fail:
606 netif_err(efx, probe, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
607 buf[0] = 0;
608}
609
610int efx_mcdi_drv_attach(struct efx_nic *efx, bool driver_operating,
611 bool *was_attached)
612{
613 u8 inbuf[MC_CMD_DRV_ATTACH_IN_LEN];
614 u8 outbuf[MC_CMD_DRV_ATTACH_OUT_LEN];
615 size_t outlen;
616 int rc;
617
618 MCDI_SET_DWORD(inbuf, DRV_ATTACH_IN_NEW_STATE,
619 driver_operating ? 1 : 0);
620 MCDI_SET_DWORD(inbuf, DRV_ATTACH_IN_UPDATE, 1);
621
622 rc = efx_mcdi_rpc(efx, MC_CMD_DRV_ATTACH, inbuf, sizeof(inbuf),
623 outbuf, sizeof(outbuf), &outlen);
624 if (rc)
625 goto fail;
626 if (outlen < MC_CMD_DRV_ATTACH_OUT_LEN) {
627 rc = -EIO;
628 goto fail;
629 }
630
631 if (was_attached != NULL)
632 *was_attached = MCDI_DWORD(outbuf, DRV_ATTACH_OUT_OLD_STATE);
633 return 0;
634
635fail:
636 netif_err(efx, probe, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
637 return rc;
638}
639
640int efx_mcdi_get_board_cfg(struct efx_nic *efx, u8 *mac_address,
641 u16 *fw_subtype_list, u32 *capabilities)
642{
643 uint8_t outbuf[MC_CMD_GET_BOARD_CFG_OUT_LENMIN];
644 size_t outlen;
645 int port_num = efx_port_num(efx);
646 int offset;
647 int rc;
648
649 BUILD_BUG_ON(MC_CMD_GET_BOARD_CFG_IN_LEN != 0);
650
651 rc = efx_mcdi_rpc(efx, MC_CMD_GET_BOARD_CFG, NULL, 0,
652 outbuf, sizeof(outbuf), &outlen);
653 if (rc)
654 goto fail;
655
656 if (outlen < MC_CMD_GET_BOARD_CFG_OUT_LENMIN) {
657 rc = -EIO;
658 goto fail;
659 }
660
661 offset = (port_num)
662 ? MC_CMD_GET_BOARD_CFG_OUT_MAC_ADDR_BASE_PORT1_OFST
663 : MC_CMD_GET_BOARD_CFG_OUT_MAC_ADDR_BASE_PORT0_OFST;
664 if (mac_address)
665 memcpy(mac_address, outbuf + offset, ETH_ALEN);
666 if (fw_subtype_list)
667 memcpy(fw_subtype_list,
668 outbuf + MC_CMD_GET_BOARD_CFG_OUT_FW_SUBTYPE_LIST_OFST,
669 MC_CMD_GET_BOARD_CFG_OUT_FW_SUBTYPE_LIST_MINNUM *
670 sizeof(fw_subtype_list[0]));
671 if (capabilities) {
672 if (port_num)
673 *capabilities = MCDI_DWORD(outbuf,
674 GET_BOARD_CFG_OUT_CAPABILITIES_PORT1);
675 else
676 *capabilities = MCDI_DWORD(outbuf,
677 GET_BOARD_CFG_OUT_CAPABILITIES_PORT0);
678 }
679
680 return 0;
681
682fail:
683 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d len=%d\n",
684 __func__, rc, (int)outlen);
685
686 return rc;
687}
688
689int efx_mcdi_log_ctrl(struct efx_nic *efx, bool evq, bool uart, u32 dest_evq)
690{
691 u8 inbuf[MC_CMD_LOG_CTRL_IN_LEN];
692 u32 dest = 0;
693 int rc;
694
695 if (uart)
696 dest |= MC_CMD_LOG_CTRL_IN_LOG_DEST_UART;
697 if (evq)
698 dest |= MC_CMD_LOG_CTRL_IN_LOG_DEST_EVQ;
699
700 MCDI_SET_DWORD(inbuf, LOG_CTRL_IN_LOG_DEST, dest);
701 MCDI_SET_DWORD(inbuf, LOG_CTRL_IN_LOG_DEST_EVQ, dest_evq);
702
703 BUILD_BUG_ON(MC_CMD_LOG_CTRL_OUT_LEN != 0);
704
705 rc = efx_mcdi_rpc(efx, MC_CMD_LOG_CTRL, inbuf, sizeof(inbuf),
706 NULL, 0, NULL);
707 if (rc)
708 goto fail;
709
710 return 0;
711
712fail:
713 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
714 return rc;
715}
716
717int efx_mcdi_nvram_types(struct efx_nic *efx, u32 *nvram_types_out)
718{
719 u8 outbuf[MC_CMD_NVRAM_TYPES_OUT_LEN];
720 size_t outlen;
721 int rc;
722
723 BUILD_BUG_ON(MC_CMD_NVRAM_TYPES_IN_LEN != 0);
724
725 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_TYPES, NULL, 0,
726 outbuf, sizeof(outbuf), &outlen);
727 if (rc)
728 goto fail;
729 if (outlen < MC_CMD_NVRAM_TYPES_OUT_LEN) {
730 rc = -EIO;
731 goto fail;
732 }
733
734 *nvram_types_out = MCDI_DWORD(outbuf, NVRAM_TYPES_OUT_TYPES);
735 return 0;
736
737fail:
738 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
739 __func__, rc);
740 return rc;
741}
742
743int efx_mcdi_nvram_info(struct efx_nic *efx, unsigned int type,
744 size_t *size_out, size_t *erase_size_out,
745 bool *protected_out)
746{
747 u8 inbuf[MC_CMD_NVRAM_INFO_IN_LEN];
748 u8 outbuf[MC_CMD_NVRAM_INFO_OUT_LEN];
749 size_t outlen;
750 int rc;
751
752 MCDI_SET_DWORD(inbuf, NVRAM_INFO_IN_TYPE, type);
753
754 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_INFO, inbuf, sizeof(inbuf),
755 outbuf, sizeof(outbuf), &outlen);
756 if (rc)
757 goto fail;
758 if (outlen < MC_CMD_NVRAM_INFO_OUT_LEN) {
759 rc = -EIO;
760 goto fail;
761 }
762
763 *size_out = MCDI_DWORD(outbuf, NVRAM_INFO_OUT_SIZE);
764 *erase_size_out = MCDI_DWORD(outbuf, NVRAM_INFO_OUT_ERASESIZE);
765 *protected_out = !!(MCDI_DWORD(outbuf, NVRAM_INFO_OUT_FLAGS) &
766 (1 << MC_CMD_NVRAM_INFO_OUT_PROTECTED_LBN));
767 return 0;
768
769fail:
770 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
771 return rc;
772}
773
774int efx_mcdi_nvram_update_start(struct efx_nic *efx, unsigned int type)
775{
776 u8 inbuf[MC_CMD_NVRAM_UPDATE_START_IN_LEN];
777 int rc;
778
779 MCDI_SET_DWORD(inbuf, NVRAM_UPDATE_START_IN_TYPE, type);
780
781 BUILD_BUG_ON(MC_CMD_NVRAM_UPDATE_START_OUT_LEN != 0);
782
783 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_UPDATE_START, inbuf, sizeof(inbuf),
784 NULL, 0, NULL);
785 if (rc)
786 goto fail;
787
788 return 0;
789
790fail:
791 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
792 return rc;
793}
794
795int efx_mcdi_nvram_read(struct efx_nic *efx, unsigned int type,
796 loff_t offset, u8 *buffer, size_t length)
797{
798 u8 inbuf[MC_CMD_NVRAM_READ_IN_LEN];
799 u8 outbuf[MC_CMD_NVRAM_READ_OUT_LEN(EFX_MCDI_NVRAM_LEN_MAX)];
800 size_t outlen;
801 int rc;
802
803 MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_TYPE, type);
804 MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_OFFSET, offset);
805 MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_LENGTH, length);
806
807 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_READ, inbuf, sizeof(inbuf),
808 outbuf, sizeof(outbuf), &outlen);
809 if (rc)
810 goto fail;
811
812 memcpy(buffer, MCDI_PTR(outbuf, NVRAM_READ_OUT_READ_BUFFER), length);
813 return 0;
814
815fail:
816 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
817 return rc;
818}
819
820int efx_mcdi_nvram_write(struct efx_nic *efx, unsigned int type,
821 loff_t offset, const u8 *buffer, size_t length)
822{
823 u8 inbuf[MC_CMD_NVRAM_WRITE_IN_LEN(EFX_MCDI_NVRAM_LEN_MAX)];
824 int rc;
825
826 MCDI_SET_DWORD(inbuf, NVRAM_WRITE_IN_TYPE, type);
827 MCDI_SET_DWORD(inbuf, NVRAM_WRITE_IN_OFFSET, offset);
828 MCDI_SET_DWORD(inbuf, NVRAM_WRITE_IN_LENGTH, length);
829 memcpy(MCDI_PTR(inbuf, NVRAM_WRITE_IN_WRITE_BUFFER), buffer, length);
830
831 BUILD_BUG_ON(MC_CMD_NVRAM_WRITE_OUT_LEN != 0);
832
833 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_WRITE, inbuf,
834 ALIGN(MC_CMD_NVRAM_WRITE_IN_LEN(length), 4),
835 NULL, 0, NULL);
836 if (rc)
837 goto fail;
838
839 return 0;
840
841fail:
842 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
843 return rc;
844}
845
846int efx_mcdi_nvram_erase(struct efx_nic *efx, unsigned int type,
847 loff_t offset, size_t length)
848{
849 u8 inbuf[MC_CMD_NVRAM_ERASE_IN_LEN];
850 int rc;
851
852 MCDI_SET_DWORD(inbuf, NVRAM_ERASE_IN_TYPE, type);
853 MCDI_SET_DWORD(inbuf, NVRAM_ERASE_IN_OFFSET, offset);
854 MCDI_SET_DWORD(inbuf, NVRAM_ERASE_IN_LENGTH, length);
855
856 BUILD_BUG_ON(MC_CMD_NVRAM_ERASE_OUT_LEN != 0);
857
858 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_ERASE, inbuf, sizeof(inbuf),
859 NULL, 0, NULL);
860 if (rc)
861 goto fail;
862
863 return 0;
864
865fail:
866 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
867 return rc;
868}
869
870int efx_mcdi_nvram_update_finish(struct efx_nic *efx, unsigned int type)
871{
872 u8 inbuf[MC_CMD_NVRAM_UPDATE_FINISH_IN_LEN];
873 int rc;
874
875 MCDI_SET_DWORD(inbuf, NVRAM_UPDATE_FINISH_IN_TYPE, type);
876
877 BUILD_BUG_ON(MC_CMD_NVRAM_UPDATE_FINISH_OUT_LEN != 0);
878
879 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_UPDATE_FINISH, inbuf, sizeof(inbuf),
880 NULL, 0, NULL);
881 if (rc)
882 goto fail;
883
884 return 0;
885
886fail:
887 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
888 return rc;
889}
890
891static int efx_mcdi_nvram_test(struct efx_nic *efx, unsigned int type)
892{
893 u8 inbuf[MC_CMD_NVRAM_TEST_IN_LEN];
894 u8 outbuf[MC_CMD_NVRAM_TEST_OUT_LEN];
895 int rc;
896
897 MCDI_SET_DWORD(inbuf, NVRAM_TEST_IN_TYPE, type);
898
899 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_TEST, inbuf, sizeof(inbuf),
900 outbuf, sizeof(outbuf), NULL);
901 if (rc)
902 return rc;
903
904 switch (MCDI_DWORD(outbuf, NVRAM_TEST_OUT_RESULT)) {
905 case MC_CMD_NVRAM_TEST_PASS:
906 case MC_CMD_NVRAM_TEST_NOTSUPP:
907 return 0;
908 default:
909 return -EIO;
910 }
911}
912
913int efx_mcdi_nvram_test_all(struct efx_nic *efx)
914{
915 u32 nvram_types;
916 unsigned int type;
917 int rc;
918
919 rc = efx_mcdi_nvram_types(efx, &nvram_types);
920 if (rc)
921 goto fail1;
922
923 type = 0;
924 while (nvram_types != 0) {
925 if (nvram_types & 1) {
926 rc = efx_mcdi_nvram_test(efx, type);
927 if (rc)
928 goto fail2;
929 }
930 type++;
931 nvram_types >>= 1;
932 }
933
934 return 0;
935
936fail2:
937 netif_err(efx, hw, efx->net_dev, "%s: failed type=%u\n",
938 __func__, type);
939fail1:
940 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
941 return rc;
942}
943
944static int efx_mcdi_read_assertion(struct efx_nic *efx)
945{
946 u8 inbuf[MC_CMD_GET_ASSERTS_IN_LEN];
947 u8 outbuf[MC_CMD_GET_ASSERTS_OUT_LEN];
948 unsigned int flags, index, ofst;
949 const char *reason;
950 size_t outlen;
951 int retry;
952 int rc;
953
954 /* Attempt to read any stored assertion state before we reboot
955 * the mcfw out of the assertion handler. Retry twice, once
956 * because a boot-time assertion might cause this command to fail
957 * with EINTR. And once again because GET_ASSERTS can race with
958 * MC_CMD_REBOOT running on the other port. */
959 retry = 2;
960 do {
961 MCDI_SET_DWORD(inbuf, GET_ASSERTS_IN_CLEAR, 1);
962 rc = efx_mcdi_rpc(efx, MC_CMD_GET_ASSERTS,
963 inbuf, MC_CMD_GET_ASSERTS_IN_LEN,
964 outbuf, sizeof(outbuf), &outlen);
965 } while ((rc == -EINTR || rc == -EIO) && retry-- > 0);
966
967 if (rc)
968 return rc;
969 if (outlen < MC_CMD_GET_ASSERTS_OUT_LEN)
970 return -EIO;
971
972 /* Print out any recorded assertion state */
973 flags = MCDI_DWORD(outbuf, GET_ASSERTS_OUT_GLOBAL_FLAGS);
974 if (flags == MC_CMD_GET_ASSERTS_FLAGS_NO_FAILS)
975 return 0;
976
977 reason = (flags == MC_CMD_GET_ASSERTS_FLAGS_SYS_FAIL)
978 ? "system-level assertion"
979 : (flags == MC_CMD_GET_ASSERTS_FLAGS_THR_FAIL)
980 ? "thread-level assertion"
981 : (flags == MC_CMD_GET_ASSERTS_FLAGS_WDOG_FIRED)
982 ? "watchdog reset"
983 : "unknown assertion";
984 netif_err(efx, hw, efx->net_dev,
985 "MCPU %s at PC = 0x%.8x in thread 0x%.8x\n", reason,
986 MCDI_DWORD(outbuf, GET_ASSERTS_OUT_SAVED_PC_OFFS),
987 MCDI_DWORD(outbuf, GET_ASSERTS_OUT_THREAD_OFFS));
988
989 /* Print out the registers */
990 ofst = MC_CMD_GET_ASSERTS_OUT_GP_REGS_OFFS_OFST;
991 for (index = 1; index < 32; index++) {
992 netif_err(efx, hw, efx->net_dev, "R%.2d (?): 0x%.8x\n", index,
993 MCDI_DWORD2(outbuf, ofst));
994 ofst += sizeof(efx_dword_t);
995 }
996
997 return 0;
998}
999
1000static void efx_mcdi_exit_assertion(struct efx_nic *efx)
1001{
1002 u8 inbuf[MC_CMD_REBOOT_IN_LEN];
1003
1004 /* Atomically reboot the mcfw out of the assertion handler */
1005 BUILD_BUG_ON(MC_CMD_REBOOT_OUT_LEN != 0);
1006 MCDI_SET_DWORD(inbuf, REBOOT_IN_FLAGS,
1007 MC_CMD_REBOOT_FLAGS_AFTER_ASSERTION);
1008 efx_mcdi_rpc(efx, MC_CMD_REBOOT, inbuf, MC_CMD_REBOOT_IN_LEN,
1009 NULL, 0, NULL);
1010}
1011
1012int efx_mcdi_handle_assertion(struct efx_nic *efx)
1013{
1014 int rc;
1015
1016 rc = efx_mcdi_read_assertion(efx);
1017 if (rc)
1018 return rc;
1019
1020 efx_mcdi_exit_assertion(efx);
1021
1022 return 0;
1023}
1024
1025void efx_mcdi_set_id_led(struct efx_nic *efx, enum efx_led_mode mode)
1026{
1027 u8 inbuf[MC_CMD_SET_ID_LED_IN_LEN];
1028 int rc;
1029
1030 BUILD_BUG_ON(EFX_LED_OFF != MC_CMD_LED_OFF);
1031 BUILD_BUG_ON(EFX_LED_ON != MC_CMD_LED_ON);
1032 BUILD_BUG_ON(EFX_LED_DEFAULT != MC_CMD_LED_DEFAULT);
1033
1034 BUILD_BUG_ON(MC_CMD_SET_ID_LED_OUT_LEN != 0);
1035
1036 MCDI_SET_DWORD(inbuf, SET_ID_LED_IN_STATE, mode);
1037
1038 rc = efx_mcdi_rpc(efx, MC_CMD_SET_ID_LED, inbuf, sizeof(inbuf),
1039 NULL, 0, NULL);
1040 if (rc)
1041 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
1042 __func__, rc);
1043}
1044
1045int efx_mcdi_reset_port(struct efx_nic *efx)
1046{
1047 int rc = efx_mcdi_rpc(efx, MC_CMD_ENTITY_RESET, NULL, 0, NULL, 0, NULL);
1048 if (rc)
1049 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
1050 __func__, rc);
1051 return rc;
1052}
1053
1054int efx_mcdi_reset_mc(struct efx_nic *efx)
1055{
1056 u8 inbuf[MC_CMD_REBOOT_IN_LEN];
1057 int rc;
1058
1059 BUILD_BUG_ON(MC_CMD_REBOOT_OUT_LEN != 0);
1060 MCDI_SET_DWORD(inbuf, REBOOT_IN_FLAGS, 0);
1061 rc = efx_mcdi_rpc(efx, MC_CMD_REBOOT, inbuf, sizeof(inbuf),
1062 NULL, 0, NULL);
1063 /* White is black, and up is down */
1064 if (rc == -EIO)
1065 return 0;
1066 if (rc == 0)
1067 rc = -EIO;
1068 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
1069 return rc;
1070}
1071
1072static int efx_mcdi_wol_filter_set(struct efx_nic *efx, u32 type,
1073 const u8 *mac, int *id_out)
1074{
1075 u8 inbuf[MC_CMD_WOL_FILTER_SET_IN_LEN];
1076 u8 outbuf[MC_CMD_WOL_FILTER_SET_OUT_LEN];
1077 size_t outlen;
1078 int rc;
1079
1080 MCDI_SET_DWORD(inbuf, WOL_FILTER_SET_IN_WOL_TYPE, type);
1081 MCDI_SET_DWORD(inbuf, WOL_FILTER_SET_IN_FILTER_MODE,
1082 MC_CMD_FILTER_MODE_SIMPLE);
1083 memcpy(MCDI_PTR(inbuf, WOL_FILTER_SET_IN_MAGIC_MAC), mac, ETH_ALEN);
1084
1085 rc = efx_mcdi_rpc(efx, MC_CMD_WOL_FILTER_SET, inbuf, sizeof(inbuf),
1086 outbuf, sizeof(outbuf), &outlen);
1087 if (rc)
1088 goto fail;
1089
1090 if (outlen < MC_CMD_WOL_FILTER_SET_OUT_LEN) {
1091 rc = -EIO;
1092 goto fail;
1093 }
1094
1095 *id_out = (int)MCDI_DWORD(outbuf, WOL_FILTER_SET_OUT_FILTER_ID);
1096
1097 return 0;
1098
1099fail:
1100 *id_out = -1;
1101 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
1102 return rc;
1103
1104}
1105
1106
1107int
1108efx_mcdi_wol_filter_set_magic(struct efx_nic *efx, const u8 *mac, int *id_out)
1109{
1110 return efx_mcdi_wol_filter_set(efx, MC_CMD_WOL_TYPE_MAGIC, mac, id_out);
1111}
1112
1113
1114int efx_mcdi_wol_filter_get_magic(struct efx_nic *efx, int *id_out)
1115{
1116 u8 outbuf[MC_CMD_WOL_FILTER_GET_OUT_LEN];
1117 size_t outlen;
1118 int rc;
1119
1120 rc = efx_mcdi_rpc(efx, MC_CMD_WOL_FILTER_GET, NULL, 0,
1121 outbuf, sizeof(outbuf), &outlen);
1122 if (rc)
1123 goto fail;
1124
1125 if (outlen < MC_CMD_WOL_FILTER_GET_OUT_LEN) {
1126 rc = -EIO;
1127 goto fail;
1128 }
1129
1130 *id_out = (int)MCDI_DWORD(outbuf, WOL_FILTER_GET_OUT_FILTER_ID);
1131
1132 return 0;
1133
1134fail:
1135 *id_out = -1;
1136 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
1137 return rc;
1138}
1139
1140
1141int efx_mcdi_wol_filter_remove(struct efx_nic *efx, int id)
1142{
1143 u8 inbuf[MC_CMD_WOL_FILTER_REMOVE_IN_LEN];
1144 int rc;
1145
1146 MCDI_SET_DWORD(inbuf, WOL_FILTER_REMOVE_IN_FILTER_ID, (u32)id);
1147
1148 rc = efx_mcdi_rpc(efx, MC_CMD_WOL_FILTER_REMOVE, inbuf, sizeof(inbuf),
1149 NULL, 0, NULL);
1150 if (rc)
1151 goto fail;
1152
1153 return 0;
1154
1155fail:
1156 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
1157 return rc;
1158}
1159
1160int efx_mcdi_flush_rxqs(struct efx_nic *efx)
1161{
1162 struct efx_channel *channel;
1163 struct efx_rx_queue *rx_queue;
1164 __le32 *qid;
1165 int rc, count;
1166
1167 qid = kmalloc(EFX_MAX_CHANNELS * sizeof(*qid), GFP_KERNEL);
1168 if (qid == NULL)
1169 return -ENOMEM;
1170
1171 count = 0;
1172 efx_for_each_channel(channel, efx) {
1173 efx_for_each_channel_rx_queue(rx_queue, channel) {
1174 if (rx_queue->flush_pending) {
1175 rx_queue->flush_pending = false;
1176 atomic_dec(&efx->rxq_flush_pending);
1177 qid[count++] = cpu_to_le32(
1178 efx_rx_queue_index(rx_queue));
1179 }
1180 }
1181 }
1182
1183 rc = efx_mcdi_rpc(efx, MC_CMD_FLUSH_RX_QUEUES, (u8 *)qid,
1184 count * sizeof(*qid), NULL, 0, NULL);
1185 WARN_ON(rc > 0);
1186
1187 kfree(qid);
1188
1189 return rc;
1190}
1191
1192int efx_mcdi_wol_filter_reset(struct efx_nic *efx)
1193{
1194 int rc;
1195
1196 rc = efx_mcdi_rpc(efx, MC_CMD_WOL_FILTER_RESET, NULL, 0, NULL, 0, NULL);
1197 if (rc)
1198 goto fail;
1199
1200 return 0;
1201
1202fail:
1203 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
1204 return rc;
1205}
1206