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afd4aea0 BH |
1 | /**************************************************************************** |
2 | * Driver for Solarflare Solarstorm network controllers and boards | |
0a6f40c6 | 3 | * Copyright 2008-2011 Solarflare Communications Inc. |
afd4aea0 BH |
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 | ||
afd4aea0 BH |
25 | #define MCDI_RPC_TIMEOUT 10 /*seconds */ |
26 | ||
27 | #define MCDI_PDU(efx) \ | |
788ec41c | 28 | (efx_port_num(efx) ? MC_SMEM_P1_PDU_OFST : MC_SMEM_P0_PDU_OFST) |
afd4aea0 | 29 | #define MCDI_DOORBELL(efx) \ |
788ec41c | 30 | (efx_port_num(efx) ? MC_SMEM_P1_DOORBELL_OFST : MC_SMEM_P0_DOORBELL_OFST) |
3f713bf4 BH |
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) | |
afd4aea0 BH |
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 | void 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 | ||
69 | static 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); | |
86c432ca BH |
73 | unsigned pdu = FR_CZ_MC_TREG_SMEM + MCDI_PDU(efx); |
74 | unsigned doorbell = FR_CZ_MC_TREG_SMEM + MCDI_DOORBELL(efx); | |
afd4aea0 BH |
75 | unsigned int i; |
76 | efx_dword_t hdr; | |
77 | u32 xflags, seqno; | |
78 | ||
79 | BUG_ON(atomic_read(&mcdi->state) == MCDI_STATE_QUIESCENT); | |
788ec41c | 80 | BUG_ON(inlen & 3 || inlen >= MC_SMEM_PDU_LEN); |
afd4aea0 BH |
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 | ||
86c432ca | 95 | efx_writed(efx, &hdr, pdu); |
afd4aea0 | 96 | |
747df225 | 97 | for (i = 0; i < inlen; i += 4) |
86c432ca BH |
98 | _efx_writed(efx, *((__le32 *)(inbuf + i)), pdu + 4 + i); |
99 | ||
100 | /* Ensure the payload is written out before the header */ | |
101 | wmb(); | |
afd4aea0 BH |
102 | |
103 | /* ring the doorbell with a distinctive value */ | |
86c432ca | 104 | _efx_writed(efx, (__force __le32) 0x45789abc, doorbell); |
afd4aea0 BH |
105 | } |
106 | ||
107 | static void efx_mcdi_copyout(struct efx_nic *efx, u8 *outbuf, size_t outlen) | |
108 | { | |
109 | struct efx_mcdi_iface *mcdi = efx_mcdi(efx); | |
86c432ca | 110 | unsigned int pdu = FR_CZ_MC_TREG_SMEM + MCDI_PDU(efx); |
afd4aea0 BH |
111 | int i; |
112 | ||
113 | BUG_ON(atomic_read(&mcdi->state) == MCDI_STATE_QUIESCENT); | |
788ec41c | 114 | BUG_ON(outlen & 3 || outlen >= MC_SMEM_PDU_LEN); |
afd4aea0 BH |
115 | |
116 | for (i = 0; i < outlen; i += 4) | |
86c432ca | 117 | *((__le32 *)(outbuf + i)) = _efx_readd(efx, pdu + 4 + i); |
afd4aea0 BH |
118 | } |
119 | ||
120 | static 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; | |
86c432ca | 125 | unsigned int pdu = FR_CZ_MC_TREG_SMEM + MCDI_PDU(efx); |
afd4aea0 BH |
126 | unsigned int rc, spins; |
127 | efx_dword_t reg; | |
128 | ||
129 | /* Check for a reboot atomically with respect to efx_mcdi_copyout() */ | |
e0bf54c9 | 130 | rc = -efx_mcdi_poll_reboot(efx); |
afd4aea0 BH |
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); | |
55029c1d BH |
145 | } else { |
146 | schedule_timeout_uninterruptible(1); | |
147 | } | |
afd4aea0 BH |
148 | |
149 | time = get_seconds(); | |
150 | ||
86c432ca BH |
151 | rmb(); |
152 | efx_readd(efx, ®, pdu); | |
afd4aea0 BH |
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) { | |
62776d03 | 171 | netif_err(efx, hw, efx->net_dev, "MC rebooted\n"); |
afd4aea0 BH |
172 | rc = EIO; |
173 | } else if ((respseq ^ mcdi->seqno) & SEQ_MASK) { | |
62776d03 BH |
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); | |
afd4aea0 BH |
177 | rc = EIO; |
178 | } else if (error) { | |
86c432ca | 179 | efx_readd(efx, ®, pdu + 4); |
afd4aea0 BH |
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 | ||
201 | out: | |
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 */ | |
211 | int efx_mcdi_poll_reboot(struct efx_nic *efx) | |
212 | { | |
3f713bf4 | 213 | unsigned int addr = FR_CZ_MC_TREG_SMEM + MCDI_STATUS(efx); |
afd4aea0 BH |
214 | efx_dword_t reg; |
215 | uint32_t value; | |
216 | ||
217 | if (efx_nic_rev(efx) < EFX_REV_SIENA_A0) | |
218 | return false; | |
219 | ||
86c432ca | 220 | efx_readd(efx, ®, addr); |
afd4aea0 BH |
221 | value = EFX_DWORD_FIELD(reg, EFX_DWORD_0); |
222 | ||
223 | if (value == 0) | |
224 | return 0; | |
225 | ||
226 | EFX_ZERO_DWORD(reg); | |
86c432ca | 227 | efx_writed(efx, ®, addr); |
afd4aea0 BH |
228 | |
229 | if (value == MC_STATUS_DWORD_ASSERT) | |
230 | return -EINTR; | |
231 | else | |
232 | return -EIO; | |
233 | } | |
234 | ||
235 | static 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 | ||
246 | static 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 | ||
270 | static 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 | ||
288 | static 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 | ||
294 | static 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 | |
62776d03 BH |
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); | |
afd4aea0 BH |
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. */ | |
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) | |
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 | ||
62776d03 BH |
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); | |
afd4aea0 BH |
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) { | |
62776d03 BH |
380 | netif_err(efx, hw, efx->net_dev, "MC fatal error %d\n", |
381 | -rc); | |
afd4aea0 BH |
382 | efx_schedule_reset(efx, RESET_TYPE_MC_FAILURE); |
383 | } else | |
f18ca364 | 384 | netif_dbg(efx, hw, efx->net_dev, |
62776d03 BH |
385 | "MC command 0x%x inlen %d failed rc=%d\n", |
386 | cmd, (int)inlen, -rc); | |
3f713bf4 BH |
387 | |
388 | if (rc == -EIO || rc == -EINTR) { | |
389 | msleep(MCDI_STATUS_SLEEP_MS); | |
390 | efx_mcdi_poll_reboot(efx); | |
391 | } | |
afd4aea0 BH |
392 | } |
393 | ||
394 | efx_mcdi_release(mcdi); | |
395 | return rc; | |
396 | } | |
397 | ||
398 | void 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 | ||
422 | void 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 | ||
446 | static 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 | |
25985edc | 460 | * mode (during startup) this is irrelevant, because efx_mcdi_complete() |
afd4aea0 BH |
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; | |
18e3ee2c | 471 | ++mcdi->credits; |
afd4aea0 | 472 | } |
3f713bf4 BH |
473 | } else { |
474 | int count; | |
475 | ||
afd4aea0 BH |
476 | /* Nobody was waiting for an MCDI request, so trigger a reset */ |
477 | efx_schedule_reset(efx, RESET_TYPE_MC_FAILURE); | |
478 | ||
3f713bf4 BH |
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 | ||
afd4aea0 BH |
487 | spin_unlock(&mcdi->iface_lock); |
488 | } | |
489 | ||
490 | static 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 | ||
497 | static 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 | ||
afd4aea0 BH |
520 | /* Called from falcon_process_eventq for MCDI events */ |
521 | void 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: | |
62776d03 BH |
530 | netif_err(efx, hw, efx->net_dev, |
531 | "MC watchdog or assertion failure at 0x%x\n", data); | |
afd4aea0 BH |
532 | efx_mcdi_ev_death(efx, EINTR); |
533 | break; | |
534 | ||
535 | case MCDI_EVENT_CODE_PMNOTICE: | |
62776d03 | 536 | netif_info(efx, wol, efx->net_dev, "MCDI PM event.\n"); |
afd4aea0 BH |
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: | |
62776d03 BH |
553 | netif_info(efx, hw, efx->net_dev, |
554 | "MC Scheduler error address=0x%x\n", data); | |
afd4aea0 BH |
555 | break; |
556 | case MCDI_EVENT_CODE_REBOOT: | |
62776d03 | 557 | netif_info(efx, hw, efx->net_dev, "MC Reboot\n"); |
afd4aea0 BH |
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; | |
cd2d5b52 BH |
563 | case MCDI_EVENT_CODE_FLR: |
564 | efx_sriov_flr(efx, MCDI_EVENT_FIELD(*event, FLR_VF)); | |
565 | break; | |
afd4aea0 BH |
566 | |
567 | default: | |
62776d03 BH |
568 | netif_err(efx, hw, efx->net_dev, "Unknown MCDI event 0x%x\n", |
569 | code); | |
afd4aea0 BH |
570 | } |
571 | } | |
572 | ||
573 | /************************************************************************** | |
574 | * | |
575 | * Specific request functions | |
576 | * | |
577 | ************************************************************************** | |
578 | */ | |
579 | ||
e5f0fd27 | 580 | void efx_mcdi_print_fwver(struct efx_nic *efx, char *buf, size_t len) |
afd4aea0 | 581 | { |
05a9320f | 582 | u8 outbuf[ALIGN(MC_CMD_GET_VERSION_OUT_LEN, 4)]; |
afd4aea0 BH |
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 | ||
05a9320f | 594 | if (outlength < MC_CMD_GET_VERSION_OUT_LEN) { |
00bbb4a5 | 595 | rc = -EIO; |
afd4aea0 BH |
596 | goto fail; |
597 | } | |
598 | ||
599 | ver_words = (__le16 *)MCDI_PTR(outbuf, GET_VERSION_OUT_VERSION); | |
e5f0fd27 BH |
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; | |
afd4aea0 BH |
604 | |
605 | fail: | |
62776d03 | 606 | netif_err(efx, probe, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
e5f0fd27 | 607 | buf[0] = 0; |
afd4aea0 BH |
608 | } |
609 | ||
610 | int 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; | |
00bbb4a5 BH |
626 | if (outlen < MC_CMD_DRV_ATTACH_OUT_LEN) { |
627 | rc = -EIO; | |
afd4aea0 | 628 | goto fail; |
00bbb4a5 | 629 | } |
afd4aea0 BH |
630 | |
631 | if (was_attached != NULL) | |
632 | *was_attached = MCDI_DWORD(outbuf, DRV_ATTACH_OUT_OLD_STATE); | |
633 | return 0; | |
634 | ||
635 | fail: | |
62776d03 | 636 | netif_err(efx, probe, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
637 | return rc; |
638 | } | |
639 | ||
640 | int efx_mcdi_get_board_cfg(struct efx_nic *efx, u8 *mac_address, | |
6aa9c7f6 | 641 | u16 *fw_subtype_list, u32 *capabilities) |
afd4aea0 | 642 | { |
05a9320f | 643 | uint8_t outbuf[MC_CMD_GET_BOARD_CFG_OUT_LENMIN]; |
afd4aea0 BH |
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 | ||
05a9320f | 656 | if (outlen < MC_CMD_GET_BOARD_CFG_OUT_LENMIN) { |
00bbb4a5 | 657 | rc = -EIO; |
afd4aea0 BH |
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, | |
05a9320f BH |
669 | MC_CMD_GET_BOARD_CFG_OUT_FW_SUBTYPE_LIST_MINNUM * |
670 | sizeof(fw_subtype_list[0])); | |
6aa9c7f6 MS |
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 | } | |
afd4aea0 BH |
679 | |
680 | return 0; | |
681 | ||
682 | fail: | |
62776d03 BH |
683 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d len=%d\n", |
684 | __func__, rc, (int)outlen); | |
afd4aea0 BH |
685 | |
686 | return rc; | |
687 | } | |
688 | ||
689 | int 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 | ||
712 | fail: | |
62776d03 | 713 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
714 | return rc; |
715 | } | |
716 | ||
717 | int 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; | |
00bbb4a5 BH |
729 | if (outlen < MC_CMD_NVRAM_TYPES_OUT_LEN) { |
730 | rc = -EIO; | |
afd4aea0 | 731 | goto fail; |
00bbb4a5 | 732 | } |
afd4aea0 BH |
733 | |
734 | *nvram_types_out = MCDI_DWORD(outbuf, NVRAM_TYPES_OUT_TYPES); | |
735 | return 0; | |
736 | ||
737 | fail: | |
62776d03 BH |
738 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", |
739 | __func__, rc); | |
afd4aea0 BH |
740 | return rc; |
741 | } | |
742 | ||
743 | int 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; | |
00bbb4a5 BH |
758 | if (outlen < MC_CMD_NVRAM_INFO_OUT_LEN) { |
759 | rc = -EIO; | |
afd4aea0 | 760 | goto fail; |
00bbb4a5 | 761 | } |
afd4aea0 BH |
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) & | |
05a9320f | 766 | (1 << MC_CMD_NVRAM_INFO_OUT_PROTECTED_LBN)); |
afd4aea0 BH |
767 | return 0; |
768 | ||
769 | fail: | |
62776d03 | 770 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
771 | return rc; |
772 | } | |
773 | ||
774 | int 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 | ||
790 | fail: | |
62776d03 | 791 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
792 | return rc; |
793 | } | |
794 | ||
795 | int 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]; | |
5a27e86b | 799 | u8 outbuf[MC_CMD_NVRAM_READ_OUT_LEN(EFX_MCDI_NVRAM_LEN_MAX)]; |
afd4aea0 BH |
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 | ||
815 | fail: | |
62776d03 | 816 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
817 | return rc; |
818 | } | |
819 | ||
820 | int efx_mcdi_nvram_write(struct efx_nic *efx, unsigned int type, | |
821 | loff_t offset, const u8 *buffer, size_t length) | |
822 | { | |
5a27e86b | 823 | u8 inbuf[MC_CMD_NVRAM_WRITE_IN_LEN(EFX_MCDI_NVRAM_LEN_MAX)]; |
afd4aea0 BH |
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 | ||
5a27e86b BH |
833 | rc = efx_mcdi_rpc(efx, MC_CMD_NVRAM_WRITE, inbuf, |
834 | ALIGN(MC_CMD_NVRAM_WRITE_IN_LEN(length), 4), | |
afd4aea0 BH |
835 | NULL, 0, NULL); |
836 | if (rc) | |
837 | goto fail; | |
838 | ||
839 | return 0; | |
840 | ||
841 | fail: | |
62776d03 | 842 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
843 | return rc; |
844 | } | |
845 | ||
846 | int 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 | ||
865 | fail: | |
62776d03 | 866 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
867 | return rc; |
868 | } | |
869 | ||
870 | int 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 | ||
886 | fail: | |
62776d03 | 887 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
888 | return rc; |
889 | } | |
890 | ||
2e803407 BH |
891 | static 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 | ||
913 | int 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) | |
b548a988 | 921 | goto fail1; |
2e803407 BH |
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) | |
b548a988 | 928 | goto fail2; |
2e803407 BH |
929 | } |
930 | type++; | |
931 | nvram_types >>= 1; | |
932 | } | |
933 | ||
934 | return 0; | |
b548a988 BH |
935 | |
936 | fail2: | |
62776d03 BH |
937 | netif_err(efx, hw, efx->net_dev, "%s: failed type=%u\n", |
938 | __func__, type); | |
b548a988 | 939 | fail1: |
62776d03 | 940 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
b548a988 | 941 | return rc; |
2e803407 BH |
942 | } |
943 | ||
8b2103ad | 944 | static int efx_mcdi_read_assertion(struct efx_nic *efx) |
afd4aea0 | 945 | { |
8b2103ad SH |
946 | u8 inbuf[MC_CMD_GET_ASSERTS_IN_LEN]; |
947 | u8 outbuf[MC_CMD_GET_ASSERTS_OUT_LEN]; | |
afd4aea0 BH |
948 | unsigned int flags, index, ofst; |
949 | const char *reason; | |
950 | size_t outlen; | |
951 | int retry; | |
952 | int rc; | |
953 | ||
8b2103ad SH |
954 | /* Attempt to read any stored assertion state before we reboot |
955 | * the mcfw out of the assertion handler. Retry twice, once | |
afd4aea0 BH |
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 { | |
8b2103ad | 961 | MCDI_SET_DWORD(inbuf, GET_ASSERTS_IN_CLEAR, 1); |
afd4aea0 | 962 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_ASSERTS, |
8b2103ad SH |
963 | inbuf, MC_CMD_GET_ASSERTS_IN_LEN, |
964 | outbuf, sizeof(outbuf), &outlen); | |
afd4aea0 BH |
965 | } while ((rc == -EINTR || rc == -EIO) && retry-- > 0); |
966 | ||
967 | if (rc) | |
968 | return rc; | |
969 | if (outlen < MC_CMD_GET_ASSERTS_OUT_LEN) | |
00bbb4a5 | 970 | return -EIO; |
afd4aea0 | 971 | |
8b2103ad SH |
972 | /* Print out any recorded assertion state */ |
973 | flags = MCDI_DWORD(outbuf, GET_ASSERTS_OUT_GLOBAL_FLAGS); | |
afd4aea0 BH |
974 | if (flags == MC_CMD_GET_ASSERTS_FLAGS_NO_FAILS) |
975 | return 0; | |
976 | ||
afd4aea0 BH |
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"; | |
62776d03 BH |
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)); | |
afd4aea0 BH |
988 | |
989 | /* Print out the registers */ | |
990 | ofst = MC_CMD_GET_ASSERTS_OUT_GP_REGS_OFFS_OFST; | |
991 | for (index = 1; index < 32; index++) { | |
62776d03 | 992 | netif_err(efx, hw, efx->net_dev, "R%.2d (?): 0x%.8x\n", index, |
8b2103ad | 993 | MCDI_DWORD2(outbuf, ofst)); |
afd4aea0 BH |
994 | ofst += sizeof(efx_dword_t); |
995 | } | |
996 | ||
997 | return 0; | |
998 | } | |
999 | ||
8b2103ad SH |
1000 | static 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 | ||
1012 | int 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 | ||
afd4aea0 BH |
1025 | void 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) | |
62776d03 BH |
1041 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", |
1042 | __func__, rc); | |
afd4aea0 BH |
1043 | } |
1044 | ||
1045 | int efx_mcdi_reset_port(struct efx_nic *efx) | |
1046 | { | |
05a9320f | 1047 | int rc = efx_mcdi_rpc(efx, MC_CMD_ENTITY_RESET, NULL, 0, NULL, 0, NULL); |
afd4aea0 | 1048 | if (rc) |
62776d03 BH |
1049 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", |
1050 | __func__, rc); | |
afd4aea0 BH |
1051 | return rc; |
1052 | } | |
1053 | ||
1054 | int 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; | |
62776d03 | 1068 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
1069 | return rc; |
1070 | } | |
1071 | ||
d215697f | 1072 | static int efx_mcdi_wol_filter_set(struct efx_nic *efx, u32 type, |
1073 | const u8 *mac, int *id_out) | |
afd4aea0 BH |
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) { | |
00bbb4a5 | 1091 | rc = -EIO; |
afd4aea0 BH |
1092 | goto fail; |
1093 | } | |
1094 | ||
1095 | *id_out = (int)MCDI_DWORD(outbuf, WOL_FILTER_SET_OUT_FILTER_ID); | |
1096 | ||
1097 | return 0; | |
1098 | ||
1099 | fail: | |
1100 | *id_out = -1; | |
62776d03 | 1101 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
1102 | return rc; |
1103 | ||
1104 | } | |
1105 | ||
1106 | ||
1107 | int | |
1108 | efx_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 | ||
1114 | int 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) { | |
00bbb4a5 | 1126 | rc = -EIO; |
afd4aea0 BH |
1127 | goto fail; |
1128 | } | |
1129 | ||
1130 | *id_out = (int)MCDI_DWORD(outbuf, WOL_FILTER_GET_OUT_FILTER_ID); | |
1131 | ||
1132 | return 0; | |
1133 | ||
1134 | fail: | |
1135 | *id_out = -1; | |
62776d03 | 1136 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
1137 | return rc; |
1138 | } | |
1139 | ||
1140 | ||
1141 | int 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 | ||
1155 | fail: | |
62776d03 | 1156 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
1157 | return rc; |
1158 | } | |
1159 | ||
cd2d5b52 BH |
1160 | int 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 | } | |
afd4aea0 BH |
1191 | |
1192 | int 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 | ||
1202 | fail: | |
62776d03 | 1203 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
1204 | return rc; |
1205 | } | |
1206 |