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sfc: Don't use enums as a bitmask.
[zen-stable.git] / drivers / net / sfc / mcdi.c
blob3dd45ed61f0a33f5368c56df8347e1f3f5a7f1af
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 /* 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
32
33 #define MCDI_RPC_TIMEOUT 10 /*seconds */
34
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)
41
42 #define SEQ_MASK \
43 EFX_MASK32(EFX_WIDTH(MCDI_HEADER_SEQ))
44
45 static 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
53 static inline void
54 efx_mcdi_readd(struct efx_nic *efx, efx_dword_t *value, unsigned reg)
55 {
56 struct siena_nic_data *nic_data = efx->nic_data;
57 value->u32[0] = (__force __le32)__raw_readl(nic_data->mcdi_smem + reg);
58 }
59
60 static inline void
61 efx_mcdi_writed(struct efx_nic *efx, const efx_dword_t *value, unsigned reg)
62 {
63 struct siena_nic_data *nic_data = efx->nic_data;
64 __raw_writel((__force u32)value->u32[0], nic_data->mcdi_smem + reg);
65 }
66
67 void efx_mcdi_init(struct efx_nic *efx)
68 {
69 struct efx_mcdi_iface *mcdi;
70
71 if (efx_nic_rev(efx) < EFX_REV_SIENA_A0)
72 return;
73
74 mcdi = efx_mcdi(efx);
75 init_waitqueue_head(&mcdi->wq);
76 spin_lock_init(&mcdi->iface_lock);
77 atomic_set(&mcdi->state, MCDI_STATE_QUIESCENT);
78 mcdi->mode = MCDI_MODE_POLL;
79
80 (void) efx_mcdi_poll_reboot(efx);
81 }
82
83 static void efx_mcdi_copyin(struct efx_nic *efx, unsigned cmd,
84 const u8 *inbuf, size_t inlen)
85 {
86 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
87 unsigned pdu = MCDI_PDU(efx);
88 unsigned doorbell = MCDI_DOORBELL(efx);
89 unsigned int i;
90 efx_dword_t hdr;
91 u32 xflags, seqno;
92
93 BUG_ON(atomic_read(&mcdi->state) == MCDI_STATE_QUIESCENT);
94 BUG_ON(inlen & 3 || inlen >= 0x100);
95
96 seqno = mcdi->seqno & SEQ_MASK;
97 xflags = 0;
98 if (mcdi->mode == MCDI_MODE_EVENTS)
99 xflags |= MCDI_HEADER_XFLAGS_EVREQ;
100
101 EFX_POPULATE_DWORD_6(hdr,
102 MCDI_HEADER_RESPONSE, 0,
103 MCDI_HEADER_RESYNC, 1,
104 MCDI_HEADER_CODE, cmd,
105 MCDI_HEADER_DATALEN, inlen,
106 MCDI_HEADER_SEQ, seqno,
107 MCDI_HEADER_XFLAGS, xflags);
108
109 efx_mcdi_writed(efx, &hdr, pdu);
110
111 for (i = 0; i < inlen; i += 4)
112 efx_mcdi_writed(efx, (const efx_dword_t *)(inbuf + i),
113 pdu + 4 + i);
114
115 /* ring the doorbell with a distinctive value */
116 EFX_POPULATE_DWORD_1(hdr, EFX_DWORD_0, 0x45789abc);
117 efx_mcdi_writed(efx, &hdr, doorbell);
118 }
119
120 static void efx_mcdi_copyout(struct efx_nic *efx, u8 *outbuf, size_t outlen)
121 {
122 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
123 unsigned int pdu = MCDI_PDU(efx);
124 int i;
125
126 BUG_ON(atomic_read(&mcdi->state) == MCDI_STATE_QUIESCENT);
127 BUG_ON(outlen & 3 || outlen >= 0x100);
128
129 for (i = 0; i < outlen; i += 4)
130 efx_mcdi_readd(efx, (efx_dword_t *)(outbuf + i), pdu + 4 + i);
131 }
132
133 static int efx_mcdi_poll(struct efx_nic *efx)
134 {
135 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
136 unsigned int time, finish;
137 unsigned int respseq, respcmd, error;
138 unsigned int pdu = MCDI_PDU(efx);
139 unsigned int rc, spins;
140 efx_dword_t reg;
141
142 /* Check for a reboot atomically with respect to efx_mcdi_copyout() */
143 rc = -efx_mcdi_poll_reboot(efx);
144 if (rc)
145 goto out;
146
147 /* Poll for completion. Poll quickly (once a us) for the 1st jiffy,
148 * because generally mcdi responses are fast. After that, back off
149 * and poll once a jiffy (approximately)
150 */
151 spins = TICK_USEC;
152 finish = get_seconds() + MCDI_RPC_TIMEOUT;
153
154 while (1) {
155 if (spins != 0) {
156 --spins;
157 udelay(1);
158 } else {
159 schedule_timeout_uninterruptible(1);
160 }
161
162 time = get_seconds();
163
164 efx_mcdi_readd(efx, &reg, pdu);
165
166 /* All 1's indicates that shared memory is in reset (and is
167 * not a valid header). Wait for it to come out reset before
168 * completing the command */
169 if (EFX_DWORD_FIELD(reg, EFX_DWORD_0) != 0xffffffff &&
170 EFX_DWORD_FIELD(reg, MCDI_HEADER_RESPONSE))
171 break;
172
173 if (time >= finish)
174 return -ETIMEDOUT;
175 }
176
177 mcdi->resplen = EFX_DWORD_FIELD(reg, MCDI_HEADER_DATALEN);
178 respseq = EFX_DWORD_FIELD(reg, MCDI_HEADER_SEQ);
179 respcmd = EFX_DWORD_FIELD(reg, MCDI_HEADER_CODE);
180 error = EFX_DWORD_FIELD(reg, MCDI_HEADER_ERROR);
181
182 if (error && mcdi->resplen == 0) {
183 netif_err(efx, hw, efx->net_dev, "MC rebooted\n");
184 rc = EIO;
185 } else if ((respseq ^ mcdi->seqno) & SEQ_MASK) {
186 netif_err(efx, hw, efx->net_dev,
187 "MC response mismatch tx seq 0x%x rx seq 0x%x\n",
188 respseq, mcdi->seqno);
189 rc = EIO;
190 } else if (error) {
191 efx_mcdi_readd(efx, &reg, pdu + 4);
192 switch (EFX_DWORD_FIELD(reg, EFX_DWORD_0)) {
193 #define TRANSLATE_ERROR(name) \
194 case MC_CMD_ERR_ ## name: \
195 rc = name; \
196 break
197 TRANSLATE_ERROR(ENOENT);
198 TRANSLATE_ERROR(EINTR);
199 TRANSLATE_ERROR(EACCES);
200 TRANSLATE_ERROR(EBUSY);
201 TRANSLATE_ERROR(EINVAL);
202 TRANSLATE_ERROR(EDEADLK);
203 TRANSLATE_ERROR(ENOSYS);
204 TRANSLATE_ERROR(ETIME);
205 #undef TRANSLATE_ERROR
206 default:
207 rc = EIO;
208 break;
209 }
210 } else
211 rc = 0;
212
213 out:
214 mcdi->resprc = rc;
215 if (rc)
216 mcdi->resplen = 0;
217
218 /* Return rc=0 like wait_event_timeout() */
219 return 0;
220 }
221
222 /* Test and clear MC-rebooted flag for this port/function */
223 int efx_mcdi_poll_reboot(struct efx_nic *efx)
224 {
225 unsigned int addr = MCDI_REBOOT_FLAG(efx);
226 efx_dword_t reg;
227 uint32_t value;
228
229 if (efx_nic_rev(efx) < EFX_REV_SIENA_A0)
230 return false;
231
232 efx_mcdi_readd(efx, &reg, addr);
233 value = EFX_DWORD_FIELD(reg, EFX_DWORD_0);
234
235 if (value == 0)
236 return 0;
237
238 EFX_ZERO_DWORD(reg);
239 efx_mcdi_writed(efx, &reg, addr);
240
241 if (value == MC_STATUS_DWORD_ASSERT)
242 return -EINTR;
243 else
244 return -EIO;
245 }
246
247 static void efx_mcdi_acquire(struct efx_mcdi_iface *mcdi)
248 {
249 /* Wait until the interface becomes QUIESCENT and we win the race
250 * to mark it RUNNING. */
251 wait_event(mcdi->wq,
252 atomic_cmpxchg(&mcdi->state,
253 MCDI_STATE_QUIESCENT,
254 MCDI_STATE_RUNNING)
255 == MCDI_STATE_QUIESCENT);
256 }
257
258 static int efx_mcdi_await_completion(struct efx_nic *efx)
259 {
260 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
261
262 if (wait_event_timeout(
263 mcdi->wq,
264 atomic_read(&mcdi->state) == MCDI_STATE_COMPLETED,
265 msecs_to_jiffies(MCDI_RPC_TIMEOUT * 1000)) == 0)
266 return -ETIMEDOUT;
267
268 /* Check if efx_mcdi_set_mode() switched us back to polled completions.
269 * In which case, poll for completions directly. If efx_mcdi_ev_cpl()
270 * completed the request first, then we'll just end up completing the
271 * request again, which is safe.
272 *
273 * We need an smp_rmb() to synchronise with efx_mcdi_mode_poll(), which
274 * wait_event_timeout() implicitly provides.
275 */
276 if (mcdi->mode == MCDI_MODE_POLL)
277 return efx_mcdi_poll(efx);
278
279 return 0;
280 }
281
282 static bool efx_mcdi_complete(struct efx_mcdi_iface *mcdi)
283 {
284 /* If the interface is RUNNING, then move to COMPLETED and wake any
285 * waiters. If the interface isn't in RUNNING then we've received a
286 * duplicate completion after we've already transitioned back to
287 * QUIESCENT. [A subsequent invocation would increment seqno, so would
288 * have failed the seqno check].
289 */
290 if (atomic_cmpxchg(&mcdi->state,
291 MCDI_STATE_RUNNING,
292 MCDI_STATE_COMPLETED) == MCDI_STATE_RUNNING) {
293 wake_up(&mcdi->wq);
294 return true;
295 }
296
297 return false;
298 }
299
300 static void efx_mcdi_release(struct efx_mcdi_iface *mcdi)
301 {
302 atomic_set(&mcdi->state, MCDI_STATE_QUIESCENT);
303 wake_up(&mcdi->wq);
304 }
305
306 static void efx_mcdi_ev_cpl(struct efx_nic *efx, unsigned int seqno,
307 unsigned int datalen, unsigned int errno)
308 {
309 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
310 bool wake = false;
311
312 spin_lock(&mcdi->iface_lock);
313
314 if ((seqno ^ mcdi->seqno) & SEQ_MASK) {
315 if (mcdi->credits)
316 /* The request has been cancelled */
317 --mcdi->credits;
318 else
319 netif_err(efx, hw, efx->net_dev,
320 "MC response mismatch tx seq 0x%x rx "
321 "seq 0x%x\n", seqno, mcdi->seqno);
322 } else {
323 mcdi->resprc = errno;
324 mcdi->resplen = datalen;
325
326 wake = true;
327 }
328
329 spin_unlock(&mcdi->iface_lock);
330
331 if (wake)
332 efx_mcdi_complete(mcdi);
333 }
334
335 /* Issue the given command by writing the data into the shared memory PDU,
336 * ring the doorbell and wait for completion. Copyout the result. */
337 int efx_mcdi_rpc(struct efx_nic *efx, unsigned cmd,
338 const u8 *inbuf, size_t inlen, u8 *outbuf, size_t outlen,
339 size_t *outlen_actual)
340 {
341 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
342 int rc;
343 BUG_ON(efx_nic_rev(efx) < EFX_REV_SIENA_A0);
344
345 efx_mcdi_acquire(mcdi);
346
347 /* Serialise with efx_mcdi_ev_cpl() and efx_mcdi_ev_death() */
348 spin_lock_bh(&mcdi->iface_lock);
349 ++mcdi->seqno;
350 spin_unlock_bh(&mcdi->iface_lock);
351
352 efx_mcdi_copyin(efx, cmd, inbuf, inlen);
353
354 if (mcdi->mode == MCDI_MODE_POLL)
355 rc = efx_mcdi_poll(efx);
356 else
357 rc = efx_mcdi_await_completion(efx);
358
359 if (rc != 0) {
360 /* Close the race with efx_mcdi_ev_cpl() executing just too late
361 * and completing a request we've just cancelled, by ensuring
362 * that the seqno check therein fails.
363 */
364 spin_lock_bh(&mcdi->iface_lock);
365 ++mcdi->seqno;
366 ++mcdi->credits;
367 spin_unlock_bh(&mcdi->iface_lock);
368
369 netif_err(efx, hw, efx->net_dev,
370 "MC command 0x%x inlen %d mode %d timed out\n",
371 cmd, (int)inlen, mcdi->mode);
372 } else {
373 size_t resplen;
374
375 /* At the very least we need a memory barrier here to ensure
376 * we pick up changes from efx_mcdi_ev_cpl(). Protect against
377 * a spurious efx_mcdi_ev_cpl() running concurrently by
378 * acquiring the iface_lock. */
379 spin_lock_bh(&mcdi->iface_lock);
380 rc = -mcdi->resprc;
381 resplen = mcdi->resplen;
382 spin_unlock_bh(&mcdi->iface_lock);
383
384 if (rc == 0) {
385 efx_mcdi_copyout(efx, outbuf,
386 min(outlen, mcdi->resplen + 3) & ~0x3);
387 if (outlen_actual != NULL)
388 *outlen_actual = resplen;
389 } else if (cmd == MC_CMD_REBOOT && rc == -EIO)
390 ; /* Don't reset if MC_CMD_REBOOT returns EIO */
391 else if (rc == -EIO || rc == -EINTR) {
392 netif_err(efx, hw, efx->net_dev, "MC fatal error %d\n",
393 -rc);
394 efx_schedule_reset(efx, RESET_TYPE_MC_FAILURE);
395 } else
396 netif_dbg(efx, hw, efx->net_dev,
397 "MC command 0x%x inlen %d failed rc=%d\n",
398 cmd, (int)inlen, -rc);
399 }
400
401 efx_mcdi_release(mcdi);
402 return rc;
403 }
404
405 void efx_mcdi_mode_poll(struct efx_nic *efx)
406 {
407 struct efx_mcdi_iface *mcdi;
408
409 if (efx_nic_rev(efx) < EFX_REV_SIENA_A0)
410 return;
411
412 mcdi = efx_mcdi(efx);
413 if (mcdi->mode == MCDI_MODE_POLL)
414 return;
415
416 /* We can switch from event completion to polled completion, because
417 * mcdi requests are always completed in shared memory. We do this by
418 * switching the mode to POLL'd then completing the request.
419 * efx_mcdi_await_completion() will then call efx_mcdi_poll().
420 *
421 * We need an smp_wmb() to synchronise with efx_mcdi_await_completion(),
422 * which efx_mcdi_complete() provides for us.
423 */
424 mcdi->mode = MCDI_MODE_POLL;
425
426 efx_mcdi_complete(mcdi);
427 }
428
429 void efx_mcdi_mode_event(struct efx_nic *efx)
430 {
431 struct efx_mcdi_iface *mcdi;
432
433 if (efx_nic_rev(efx) < EFX_REV_SIENA_A0)
434 return;
435
436 mcdi = efx_mcdi(efx);
437
438 if (mcdi->mode == MCDI_MODE_EVENTS)
439 return;
440
441 /* We can't switch from polled to event completion in the middle of a
442 * request, because the completion method is specified in the request.
443 * So acquire the interface to serialise the requestors. We don't need
444 * to acquire the iface_lock to change the mode here, but we do need a
445 * write memory barrier ensure that efx_mcdi_rpc() sees it, which
446 * efx_mcdi_acquire() provides.
447 */
448 efx_mcdi_acquire(mcdi);
449 mcdi->mode = MCDI_MODE_EVENTS;
450 efx_mcdi_release(mcdi);
451 }
452
453 static void efx_mcdi_ev_death(struct efx_nic *efx, int rc)
454 {
455 struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
456
457 /* If there is an outstanding MCDI request, it has been terminated
458 * either by a BADASSERT or REBOOT event. If the mcdi interface is
459 * in polled mode, then do nothing because the MC reboot handler will
460 * set the header correctly. However, if the mcdi interface is waiting
461 * for a CMDDONE event it won't receive it [and since all MCDI events
462 * are sent to the same queue, we can't be racing with
463 * efx_mcdi_ev_cpl()]
464 *
465 * There's a race here with efx_mcdi_rpc(), because we might receive
466 * a REBOOT event *before* the request has been copied out. In polled
467 * mode (during startup) this is irrelevant, because efx_mcdi_complete()
468 * is ignored. In event mode, this condition is just an edge-case of
469 * receiving a REBOOT event after posting the MCDI request. Did the mc
470 * reboot before or after the copyout? The best we can do always is
471 * just return failure.
472 */
473 spin_lock(&mcdi->iface_lock);
474 if (efx_mcdi_complete(mcdi)) {
475 if (mcdi->mode == MCDI_MODE_EVENTS) {
476 mcdi->resprc = rc;
477 mcdi->resplen = 0;
478 ++mcdi->credits;
479 }
480 } else
481 /* Nobody was waiting for an MCDI request, so trigger a reset */
482 efx_schedule_reset(efx, RESET_TYPE_MC_FAILURE);
483
484 spin_unlock(&mcdi->iface_lock);
485 }
486
487 static unsigned int efx_mcdi_event_link_speed[] = {
488 [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100,
489 [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000,
490 [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000,
491 };
492
493
494 static void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev)
495 {
496 u32 flags, fcntl, speed, lpa;
497
498 speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED);
499 EFX_BUG_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed));
500 speed = efx_mcdi_event_link_speed[speed];
501
502 flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS);
503 fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL);
504 lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP);
505
506 /* efx->link_state is only modified by efx_mcdi_phy_get_link(),
507 * which is only run after flushing the event queues. Therefore, it
508 * is safe to modify the link state outside of the mac_lock here.
509 */
510 efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl);
511
512 efx_mcdi_phy_check_fcntl(efx, lpa);
513
514 efx_link_status_changed(efx);
515 }
516
517 static const char *sensor_names[] = {
518 [MC_CMD_SENSOR_CONTROLLER_TEMP] = "Controller temp. sensor",
519 [MC_CMD_SENSOR_PHY_COMMON_TEMP] = "PHY shared temp. sensor",
520 [MC_CMD_SENSOR_CONTROLLER_COOLING] = "Controller cooling",
521 [MC_CMD_SENSOR_PHY0_TEMP] = "PHY 0 temp. sensor",
522 [MC_CMD_SENSOR_PHY0_COOLING] = "PHY 0 cooling",
523 [MC_CMD_SENSOR_PHY1_TEMP] = "PHY 1 temp. sensor",
524 [MC_CMD_SENSOR_PHY1_COOLING] = "PHY 1 cooling",
525 [MC_CMD_SENSOR_IN_1V0] = "1.0V supply sensor",
526 [MC_CMD_SENSOR_IN_1V2] = "1.2V supply sensor",
527 [MC_CMD_SENSOR_IN_1V8] = "1.8V supply sensor",
528 [MC_CMD_SENSOR_IN_2V5] = "2.5V supply sensor",
529 [MC_CMD_SENSOR_IN_3V3] = "3.3V supply sensor",
530 [MC_CMD_SENSOR_IN_12V0] = "12V supply sensor"
531 };
532
533 static const char *sensor_status_names[] = {
534 [MC_CMD_SENSOR_STATE_OK] = "OK",
535 [MC_CMD_SENSOR_STATE_WARNING] = "Warning",
536 [MC_CMD_SENSOR_STATE_FATAL] = "Fatal",
537 [MC_CMD_SENSOR_STATE_BROKEN] = "Device failure",
538 };
539
540 static void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev)
541 {
542 unsigned int monitor, state, value;
543 const char *name, *state_txt;
544 monitor = EFX_QWORD_FIELD(*ev, MCDI_EVENT_SENSOREVT_MONITOR);
545 state = EFX_QWORD_FIELD(*ev, MCDI_EVENT_SENSOREVT_STATE);
546 value = EFX_QWORD_FIELD(*ev, MCDI_EVENT_SENSOREVT_VALUE);
547 /* Deal gracefully with the board having more drivers than we
548 * know about, but do not expect new sensor states. */
549 name = (monitor >= ARRAY_SIZE(sensor_names))
550 ? "No sensor name available" :
551 sensor_names[monitor];
552 EFX_BUG_ON_PARANOID(state >= ARRAY_SIZE(sensor_status_names));
553 state_txt = sensor_status_names[state];
554
555 netif_err(efx, hw, efx->net_dev,
556 "Sensor %d (%s) reports condition '%s' for raw value %d\n",
557 monitor, name, state_txt, value);
558 }
559
560 /* Called from falcon_process_eventq for MCDI events */
561 void efx_mcdi_process_event(struct efx_channel *channel,
562 efx_qword_t *event)
563 {
564 struct efx_nic *efx = channel->efx;
565 int code = EFX_QWORD_FIELD(*event, MCDI_EVENT_CODE);
566 u32 data = EFX_QWORD_FIELD(*event, MCDI_EVENT_DATA);
567
568 switch (code) {
569 case MCDI_EVENT_CODE_BADSSERT:
570 netif_err(efx, hw, efx->net_dev,
571 "MC watchdog or assertion failure at 0x%x\n", data);
572 efx_mcdi_ev_death(efx, EINTR);
573 break;
574
575 case MCDI_EVENT_CODE_PMNOTICE:
576 netif_info(efx, wol, efx->net_dev, "MCDI PM event.\n");
577 break;
578
579 case MCDI_EVENT_CODE_CMDDONE:
580 efx_mcdi_ev_cpl(efx,
581 MCDI_EVENT_FIELD(*event, CMDDONE_SEQ),
582 MCDI_EVENT_FIELD(*event, CMDDONE_DATALEN),
583 MCDI_EVENT_FIELD(*event, CMDDONE_ERRNO));
584 break;
585
586 case MCDI_EVENT_CODE_LINKCHANGE:
587 efx_mcdi_process_link_change(efx, event);
588 break;
589 case MCDI_EVENT_CODE_SENSOREVT:
590 efx_mcdi_sensor_event(efx, event);
591 break;
592 case MCDI_EVENT_CODE_SCHEDERR:
593 netif_info(efx, hw, efx->net_dev,
594 "MC Scheduler error address=0x%x\n", data);
595 break;
596 case MCDI_EVENT_CODE_REBOOT:
597 netif_info(efx, hw, efx->net_dev, "MC Reboot\n");
598 efx_mcdi_ev_death(efx, EIO);
599 break;
600 case MCDI_EVENT_CODE_MAC_STATS_DMA:
601 /* MAC stats are gather lazily. We can ignore this. */
602 break;
603
604 default:
605 netif_err(efx, hw, efx->net_dev, "Unknown MCDI event 0x%x\n",
606 code);
607 }
608 }
609
610 /**************************************************************************
611 *
612 * Specific request functions
613 *
614 **************************************************************************
615 */
616
617 void efx_mcdi_print_fwver(struct efx_nic *efx, char *buf, size_t len)
618 {
619 u8 outbuf[ALIGN(MC_CMD_GET_VERSION_V1_OUT_LEN, 4)];
620 size_t outlength;
621 const __le16 *ver_words;
622 int rc;
623
624 BUILD_BUG_ON(MC_CMD_GET_VERSION_IN_LEN != 0);
625
626 rc = efx_mcdi_rpc(efx, MC_CMD_GET_VERSION, NULL, 0,
627 outbuf, sizeof(outbuf), &outlength);
628 if (rc)
629 goto fail;
630
631 if (outlength < MC_CMD_GET_VERSION_V1_OUT_LEN) {
632 rc = -EIO;
633 goto fail;
634 }
635
636 ver_words = (__le16 *)MCDI_PTR(outbuf, GET_VERSION_OUT_VERSION);
637 snprintf(buf, len, "%u.%u.%u.%u",
638 le16_to_cpu(ver_words[0]), le16_to_cpu(ver_words[1]),
639 le16_to_cpu(ver_words[2]), le16_to_cpu(ver_words[3]));
640 return;
641
642 fail:
643 netif_err(efx, probe, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
644 buf[0] = 0;
645 }
646
647 int efx_mcdi_drv_attach(struct efx_nic *efx, bool driver_operating,
648 bool *was_attached)
649 {
650 u8 inbuf[MC_CMD_DRV_ATTACH_IN_LEN];
651 u8 outbuf[MC_CMD_DRV_ATTACH_OUT_LEN];
652 size_t outlen;
653 int rc;
654
655 MCDI_SET_DWORD(inbuf, DRV_ATTACH_IN_NEW_STATE,
656 driver_operating ? 1 : 0);
657 MCDI_SET_DWORD(inbuf, DRV_ATTACH_IN_UPDATE, 1);
658
659 rc = efx_mcdi_rpc(efx, MC_CMD_DRV_ATTACH, inbuf, sizeof(inbuf),
660 outbuf, sizeof(outbuf), &outlen);
661 if (rc)
662 goto fail;
663 if (outlen < MC_CMD_DRV_ATTACH_OUT_LEN) {
664 rc = -EIO;
665 goto fail;
666 }
667
668 if (was_attached != NULL)
669 *was_attached = MCDI_DWORD(outbuf, DRV_ATTACH_OUT_OLD_STATE);
670 return 0;
671
672 fail:
673 netif_err(efx, probe, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
674 return rc;
675 }
676
677 int efx_mcdi_get_board_cfg(struct efx_nic *efx, u8 *mac_address,
678 u16 *fw_subtype_list)
679 {
680 uint8_t outbuf[MC_CMD_GET_BOARD_CFG_OUT_LEN];
681 size_t outlen;
682 int port_num = efx_port_num(efx);
683 int offset;
684 int rc;
685
686 BUILD_BUG_ON(MC_CMD_GET_BOARD_CFG_IN_LEN != 0);
687
688 rc = efx_mcdi_rpc(efx, MC_CMD_GET_BOARD_CFG, NULL, 0,
689 outbuf, sizeof(outbuf), &outlen);
690 if (rc)
691 goto fail;
692
693 if (outlen < MC_CMD_GET_BOARD_CFG_OUT_LEN) {
694 rc = -EIO;
695 goto fail;
696 }
697
698 offset = (port_num)
699 ? MC_CMD_GET_BOARD_CFG_OUT_MAC_ADDR_BASE_PORT1_OFST
700 : MC_CMD_GET_BOARD_CFG_OUT_MAC_ADDR_BASE_PORT0_OFST;
701 if (mac_address)
702 memcpy(mac_address, outbuf + offset, ETH_ALEN);
703 if (fw_subtype_list)
704 memcpy(fw_subtype_list,
705 outbuf + MC_CMD_GET_BOARD_CFG_OUT_FW_SUBTYPE_LIST_OFST,
706 MC_CMD_GET_BOARD_CFG_OUT_FW_SUBTYPE_LIST_LEN);
707
708 return 0;
709
710 fail:
711 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d len=%d\n",
712 __func__, rc, (int)outlen);
713
714 return rc;
715 }
716
717 int efx_mcdi_log_ctrl(struct efx_nic *efx, bool evq, bool uart, u32 dest_evq)
718 {
719 u8 inbuf[MC_CMD_LOG_CTRL_IN_LEN];
720 u32 dest = 0;
721 int rc;
722
723 if (uart)
724 dest |= MC_CMD_LOG_CTRL_IN_LOG_DEST_UART;
725 if (evq)
726 dest |= MC_CMD_LOG_CTRL_IN_LOG_DEST_EVQ;
727
728 MCDI_SET_DWORD(inbuf, LOG_CTRL_IN_LOG_DEST, dest);
729 MCDI_SET_DWORD(inbuf, LOG_CTRL_IN_LOG_DEST_EVQ, dest_evq);
730
731 BUILD_BUG_ON(MC_CMD_LOG_CTRL_OUT_LEN != 0);
732
733 rc = efx_mcdi_rpc(efx, MC_CMD_LOG_CTRL, inbuf, sizeof(inbuf),
734 NULL, 0, NULL);
735 if (rc)
736 goto fail;
737
738 return 0;
739
740 fail:
741 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
742 return rc;
743 }
744
745 int efx_mcdi_nvram_types(struct efx_nic *efx, u32 *nvram_types_out)
746 {
747 u8 outbuf[MC_CMD_NVRAM_TYPES_OUT_LEN];
748 size_t outlen;
749 int rc;
750
751 BUILD_BUG_ON(MC_CMD_NVRAM_TYPES_IN_LEN != 0);
752
753 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_TYPES, NULL, 0,
754 outbuf, sizeof(outbuf), &outlen);
755 if (rc)
756 goto fail;
757 if (outlen < MC_CMD_NVRAM_TYPES_OUT_LEN) {
758 rc = -EIO;
759 goto fail;
760 }
761
762 *nvram_types_out = MCDI_DWORD(outbuf, NVRAM_TYPES_OUT_TYPES);
763 return 0;
764
765 fail:
766 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
767 __func__, rc);
768 return rc;
769 }
770
771 int efx_mcdi_nvram_info(struct efx_nic *efx, unsigned int type,
772 size_t *size_out, size_t *erase_size_out,
773 bool *protected_out)
774 {
775 u8 inbuf[MC_CMD_NVRAM_INFO_IN_LEN];
776 u8 outbuf[MC_CMD_NVRAM_INFO_OUT_LEN];
777 size_t outlen;
778 int rc;
779
780 MCDI_SET_DWORD(inbuf, NVRAM_INFO_IN_TYPE, type);
781
782 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_INFO, inbuf, sizeof(inbuf),
783 outbuf, sizeof(outbuf), &outlen);
784 if (rc)
785 goto fail;
786 if (outlen < MC_CMD_NVRAM_INFO_OUT_LEN) {
787 rc = -EIO;
788 goto fail;
789 }
790
791 *size_out = MCDI_DWORD(outbuf, NVRAM_INFO_OUT_SIZE);
792 *erase_size_out = MCDI_DWORD(outbuf, NVRAM_INFO_OUT_ERASESIZE);
793 *protected_out = !!(MCDI_DWORD(outbuf, NVRAM_INFO_OUT_FLAGS) &
794 (1 << MC_CMD_NVRAM_PROTECTED_LBN));
795 return 0;
796
797 fail:
798 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
799 return rc;
800 }
801
802 int efx_mcdi_nvram_update_start(struct efx_nic *efx, unsigned int type)
803 {
804 u8 inbuf[MC_CMD_NVRAM_UPDATE_START_IN_LEN];
805 int rc;
806
807 MCDI_SET_DWORD(inbuf, NVRAM_UPDATE_START_IN_TYPE, type);
808
809 BUILD_BUG_ON(MC_CMD_NVRAM_UPDATE_START_OUT_LEN != 0);
810
811 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_UPDATE_START, inbuf, sizeof(inbuf),
812 NULL, 0, NULL);
813 if (rc)
814 goto fail;
815
816 return 0;
817
818 fail:
819 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
820 return rc;
821 }
822
823 int efx_mcdi_nvram_read(struct efx_nic *efx, unsigned int type,
824 loff_t offset, u8 *buffer, size_t length)
825 {
826 u8 inbuf[MC_CMD_NVRAM_READ_IN_LEN];
827 u8 outbuf[MC_CMD_NVRAM_READ_OUT_LEN(EFX_MCDI_NVRAM_LEN_MAX)];
828 size_t outlen;
829 int rc;
830
831 MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_TYPE, type);
832 MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_OFFSET, offset);
833 MCDI_SET_DWORD(inbuf, NVRAM_READ_IN_LENGTH, length);
834
835 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_READ, inbuf, sizeof(inbuf),
836 outbuf, sizeof(outbuf), &outlen);
837 if (rc)
838 goto fail;
839
840 memcpy(buffer, MCDI_PTR(outbuf, NVRAM_READ_OUT_READ_BUFFER), length);
841 return 0;
842
843 fail:
844 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
845 return rc;
846 }
847
848 int efx_mcdi_nvram_write(struct efx_nic *efx, unsigned int type,
849 loff_t offset, const u8 *buffer, size_t length)
850 {
851 u8 inbuf[MC_CMD_NVRAM_WRITE_IN_LEN(EFX_MCDI_NVRAM_LEN_MAX)];
852 int rc;
853
854 MCDI_SET_DWORD(inbuf, NVRAM_WRITE_IN_TYPE, type);
855 MCDI_SET_DWORD(inbuf, NVRAM_WRITE_IN_OFFSET, offset);
856 MCDI_SET_DWORD(inbuf, NVRAM_WRITE_IN_LENGTH, length);
857 memcpy(MCDI_PTR(inbuf, NVRAM_WRITE_IN_WRITE_BUFFER), buffer, length);
858
859 BUILD_BUG_ON(MC_CMD_NVRAM_WRITE_OUT_LEN != 0);
860
861 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_WRITE, inbuf,
862 ALIGN(MC_CMD_NVRAM_WRITE_IN_LEN(length), 4),
863 NULL, 0, NULL);
864 if (rc)
865 goto fail;
866
867 return 0;
868
869 fail:
870 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
871 return rc;
872 }
873
874 int efx_mcdi_nvram_erase(struct efx_nic *efx, unsigned int type,
875 loff_t offset, size_t length)
876 {
877 u8 inbuf[MC_CMD_NVRAM_ERASE_IN_LEN];
878 int rc;
879
880 MCDI_SET_DWORD(inbuf, NVRAM_ERASE_IN_TYPE, type);
881 MCDI_SET_DWORD(inbuf, NVRAM_ERASE_IN_OFFSET, offset);
882 MCDI_SET_DWORD(inbuf, NVRAM_ERASE_IN_LENGTH, length);
883
884 BUILD_BUG_ON(MC_CMD_NVRAM_ERASE_OUT_LEN != 0);
885
886 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_ERASE, inbuf, sizeof(inbuf),
887 NULL, 0, NULL);
888 if (rc)
889 goto fail;
890
891 return 0;
892
893 fail:
894 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
895 return rc;
896 }
897
898 int efx_mcdi_nvram_update_finish(struct efx_nic *efx, unsigned int type)
899 {
900 u8 inbuf[MC_CMD_NVRAM_UPDATE_FINISH_IN_LEN];
901 int rc;
902
903 MCDI_SET_DWORD(inbuf, NVRAM_UPDATE_FINISH_IN_TYPE, type);
904
905 BUILD_BUG_ON(MC_CMD_NVRAM_UPDATE_FINISH_OUT_LEN != 0);
906
907 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_UPDATE_FINISH, inbuf, sizeof(inbuf),
908 NULL, 0, NULL);
909 if (rc)
910 goto fail;
911
912 return 0;
913
914 fail:
915 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
916 return rc;
917 }
918
919 static int efx_mcdi_nvram_test(struct efx_nic *efx, unsigned int type)
920 {
921 u8 inbuf[MC_CMD_NVRAM_TEST_IN_LEN];
922 u8 outbuf[MC_CMD_NVRAM_TEST_OUT_LEN];
923 int rc;
924
925 MCDI_SET_DWORD(inbuf, NVRAM_TEST_IN_TYPE, type);
926
927 rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_TEST, inbuf, sizeof(inbuf),
928 outbuf, sizeof(outbuf), NULL);
929 if (rc)
930 return rc;
931
932 switch (MCDI_DWORD(outbuf, NVRAM_TEST_OUT_RESULT)) {
933 case MC_CMD_NVRAM_TEST_PASS:
934 case MC_CMD_NVRAM_TEST_NOTSUPP:
935 return 0;
936 default:
937 return -EIO;
938 }
939 }
940
941 int efx_mcdi_nvram_test_all(struct efx_nic *efx)
942 {
943 u32 nvram_types;
944 unsigned int type;
945 int rc;
946
947 rc = efx_mcdi_nvram_types(efx, &nvram_types);
948 if (rc)
949 goto fail1;
950
951 type = 0;
952 while (nvram_types != 0) {
953 if (nvram_types & 1) {
954 rc = efx_mcdi_nvram_test(efx, type);
955 if (rc)
956 goto fail2;
957 }
958 type++;
959 nvram_types >>= 1;
960 }
961
962 return 0;
963
964 fail2:
965 netif_err(efx, hw, efx->net_dev, "%s: failed type=%u\n",
966 __func__, type);
967 fail1:
968 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
969 return rc;
970 }
971
972 static int efx_mcdi_read_assertion(struct efx_nic *efx)
973 {
974 u8 inbuf[MC_CMD_GET_ASSERTS_IN_LEN];
975 u8 outbuf[MC_CMD_GET_ASSERTS_OUT_LEN];
976 unsigned int flags, index, ofst;
977 const char *reason;
978 size_t outlen;
979 int retry;
980 int rc;
981
982 /* Attempt to read any stored assertion state before we reboot
983 * the mcfw out of the assertion handler. Retry twice, once
984 * because a boot-time assertion might cause this command to fail
985 * with EINTR. And once again because GET_ASSERTS can race with
986 * MC_CMD_REBOOT running on the other port. */
987 retry = 2;
988 do {
989 MCDI_SET_DWORD(inbuf, GET_ASSERTS_IN_CLEAR, 1);
990 rc = efx_mcdi_rpc(efx, MC_CMD_GET_ASSERTS,
991 inbuf, MC_CMD_GET_ASSERTS_IN_LEN,
992 outbuf, sizeof(outbuf), &outlen);
993 } while ((rc == -EINTR || rc == -EIO) && retry-- > 0);
994
995 if (rc)
996 return rc;
997 if (outlen < MC_CMD_GET_ASSERTS_OUT_LEN)
998 return -EIO;
999
1000 /* Print out any recorded assertion state */
1001 flags = MCDI_DWORD(outbuf, GET_ASSERTS_OUT_GLOBAL_FLAGS);
1002 if (flags == MC_CMD_GET_ASSERTS_FLAGS_NO_FAILS)
1003 return 0;
1004
1005 reason = (flags == MC_CMD_GET_ASSERTS_FLAGS_SYS_FAIL)
1006 ? "system-level assertion"
1007 : (flags == MC_CMD_GET_ASSERTS_FLAGS_THR_FAIL)
1008 ? "thread-level assertion"
1009 : (flags == MC_CMD_GET_ASSERTS_FLAGS_WDOG_FIRED)
1010 ? "watchdog reset"
1011 : "unknown assertion";
1012 netif_err(efx, hw, efx->net_dev,
1013 "MCPU %s at PC = 0x%.8x in thread 0x%.8x\n", reason,
1014 MCDI_DWORD(outbuf, GET_ASSERTS_OUT_SAVED_PC_OFFS),
1015 MCDI_DWORD(outbuf, GET_ASSERTS_OUT_THREAD_OFFS));
1016
1017 /* Print out the registers */
1018 ofst = MC_CMD_GET_ASSERTS_OUT_GP_REGS_OFFS_OFST;
1019 for (index = 1; index < 32; index++) {
1020 netif_err(efx, hw, efx->net_dev, "R%.2d (?): 0x%.8x\n", index,
1021 MCDI_DWORD2(outbuf, ofst));
1022 ofst += sizeof(efx_dword_t);
1023 }
1024
1025 return 0;
1026 }
1027
1028 static void efx_mcdi_exit_assertion(struct efx_nic *efx)
1029 {
1030 u8 inbuf[MC_CMD_REBOOT_IN_LEN];
1031
1032 /* Atomically reboot the mcfw out of the assertion handler */
1033 BUILD_BUG_ON(MC_CMD_REBOOT_OUT_LEN != 0);
1034 MCDI_SET_DWORD(inbuf, REBOOT_IN_FLAGS,
1035 MC_CMD_REBOOT_FLAGS_AFTER_ASSERTION);
1036 efx_mcdi_rpc(efx, MC_CMD_REBOOT, inbuf, MC_CMD_REBOOT_IN_LEN,
1037 NULL, 0, NULL);
1038 }
1039
1040 int efx_mcdi_handle_assertion(struct efx_nic *efx)
1041 {
1042 int rc;
1043
1044 rc = efx_mcdi_read_assertion(efx);
1045 if (rc)
1046 return rc;
1047
1048 efx_mcdi_exit_assertion(efx);
1049
1050 return 0;
1051 }
1052
1053 void efx_mcdi_set_id_led(struct efx_nic *efx, enum efx_led_mode mode)
1054 {
1055 u8 inbuf[MC_CMD_SET_ID_LED_IN_LEN];
1056 int rc;
1057
1058 BUILD_BUG_ON(EFX_LED_OFF != MC_CMD_LED_OFF);
1059 BUILD_BUG_ON(EFX_LED_ON != MC_CMD_LED_ON);
1060 BUILD_BUG_ON(EFX_LED_DEFAULT != MC_CMD_LED_DEFAULT);
1061
1062 BUILD_BUG_ON(MC_CMD_SET_ID_LED_OUT_LEN != 0);
1063
1064 MCDI_SET_DWORD(inbuf, SET_ID_LED_IN_STATE, mode);
1065
1066 rc = efx_mcdi_rpc(efx, MC_CMD_SET_ID_LED, inbuf, sizeof(inbuf),
1067 NULL, 0, NULL);
1068 if (rc)
1069 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
1070 __func__, rc);
1071 }
1072
1073 int efx_mcdi_reset_port(struct efx_nic *efx)
1074 {
1075 int rc = efx_mcdi_rpc(efx, MC_CMD_PORT_RESET, NULL, 0, NULL, 0, NULL);
1076 if (rc)
1077 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
1078 __func__, rc);
1079 return rc;
1080 }
1081
1082 int efx_mcdi_reset_mc(struct efx_nic *efx)
1083 {
1084 u8 inbuf[MC_CMD_REBOOT_IN_LEN];
1085 int rc;
1086
1087 BUILD_BUG_ON(MC_CMD_REBOOT_OUT_LEN != 0);
1088 MCDI_SET_DWORD(inbuf, REBOOT_IN_FLAGS, 0);
1089 rc = efx_mcdi_rpc(efx, MC_CMD_REBOOT, inbuf, sizeof(inbuf),
1090 NULL, 0, NULL);
1091 /* White is black, and up is down */
1092 if (rc == -EIO)
1093 return 0;
1094 if (rc == 0)
1095 rc = -EIO;
1096 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
1097 return rc;
1098 }
1099
1100 static int efx_mcdi_wol_filter_set(struct efx_nic *efx, u32 type,
1101 const u8 *mac, int *id_out)
1102 {
1103 u8 inbuf[MC_CMD_WOL_FILTER_SET_IN_LEN];
1104 u8 outbuf[MC_CMD_WOL_FILTER_SET_OUT_LEN];
1105 size_t outlen;
1106 int rc;
1107
1108 MCDI_SET_DWORD(inbuf, WOL_FILTER_SET_IN_WOL_TYPE, type);
1109 MCDI_SET_DWORD(inbuf, WOL_FILTER_SET_IN_FILTER_MODE,
1110 MC_CMD_FILTER_MODE_SIMPLE);
1111 memcpy(MCDI_PTR(inbuf, WOL_FILTER_SET_IN_MAGIC_MAC), mac, ETH_ALEN);
1112
1113 rc = efx_mcdi_rpc(efx, MC_CMD_WOL_FILTER_SET, inbuf, sizeof(inbuf),
1114 outbuf, sizeof(outbuf), &outlen);
1115 if (rc)
1116 goto fail;
1117
1118 if (outlen < MC_CMD_WOL_FILTER_SET_OUT_LEN) {
1119 rc = -EIO;
1120 goto fail;
1121 }
1122
1123 *id_out = (int)MCDI_DWORD(outbuf, WOL_FILTER_SET_OUT_FILTER_ID);
1124
1125 return 0;
1126
1127 fail:
1128 *id_out = -1;
1129 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
1130 return rc;
1131
1132 }
1133
1134
1135 int
1136 efx_mcdi_wol_filter_set_magic(struct efx_nic *efx, const u8 *mac, int *id_out)
1137 {
1138 return efx_mcdi_wol_filter_set(efx, MC_CMD_WOL_TYPE_MAGIC, mac, id_out);
1139 }
1140
1141
1142 int efx_mcdi_wol_filter_get_magic(struct efx_nic *efx, int *id_out)
1143 {
1144 u8 outbuf[MC_CMD_WOL_FILTER_GET_OUT_LEN];
1145 size_t outlen;
1146 int rc;
1147
1148 rc = efx_mcdi_rpc(efx, MC_CMD_WOL_FILTER_GET, NULL, 0,
1149 outbuf, sizeof(outbuf), &outlen);
1150 if (rc)
1151 goto fail;
1152
1153 if (outlen < MC_CMD_WOL_FILTER_GET_OUT_LEN) {
1154 rc = -EIO;
1155 goto fail;
1156 }
1157
1158 *id_out = (int)MCDI_DWORD(outbuf, WOL_FILTER_GET_OUT_FILTER_ID);
1159
1160 return 0;
1161
1162 fail:
1163 *id_out = -1;
1164 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
1165 return rc;
1166 }
1167
1168
1169 int efx_mcdi_wol_filter_remove(struct efx_nic *efx, int id)
1170 {
1171 u8 inbuf[MC_CMD_WOL_FILTER_REMOVE_IN_LEN];
1172 int rc;
1173
1174 MCDI_SET_DWORD(inbuf, WOL_FILTER_REMOVE_IN_FILTER_ID, (u32)id);
1175
1176 rc = efx_mcdi_rpc(efx, MC_CMD_WOL_FILTER_REMOVE, inbuf, sizeof(inbuf),
1177 NULL, 0, NULL);
1178 if (rc)
1179 goto fail;
1180
1181 return 0;
1182
1183 fail:
1184 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
1185 return rc;
1186 }
1187
1188
1189 int efx_mcdi_wol_filter_reset(struct efx_nic *efx)
1190 {
1191 int rc;
1192
1193 rc = efx_mcdi_rpc(efx, MC_CMD_WOL_FILTER_RESET, NULL, 0, NULL, 0, NULL);
1194 if (rc)
1195 goto fail;
1196
1197 return 0;
1198
1199 fail:
1200 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
1201 return rc;
1202 }
1203