1 /****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2008-2009 Solarflare Communications Inc.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published
7 * by the Free Software Foundation, incorporated herein by reference.
10 #include <linux/delay.h>
11 #include "net_driver.h"
15 #include "mcdi_pcol.h"
18 /**************************************************************************
20 * Management-Controller-to-Driver Interface
22 **************************************************************************
25 /* Software-defined structure to the shared-memory */
26 #define CMD_NOTIFY_PORT0 0
27 #define CMD_NOTIFY_PORT1 4
28 #define CMD_PDU_PORT0 0x008
29 #define CMD_PDU_PORT1 0x108
30 #define REBOOT_FLAG_PORT0 0x3f8
31 #define REBOOT_FLAG_PORT1 0x3fc
33 #define MCDI_RPC_TIMEOUT 10 /*seconds */
35 #define MCDI_PDU(efx) \
36 (efx_port_num(efx) ? CMD_PDU_PORT1 : CMD_PDU_PORT0)
37 #define MCDI_DOORBELL(efx) \
38 (efx_port_num(efx) ? CMD_NOTIFY_PORT1 : CMD_NOTIFY_PORT0)
39 #define MCDI_REBOOT_FLAG(efx) \
40 (efx_port_num(efx) ? REBOOT_FLAG_PORT1 : REBOOT_FLAG_PORT0)
43 EFX_MASK32(EFX_WIDTH(MCDI_HEADER_SEQ))
45 static inline struct efx_mcdi_iface
*efx_mcdi(struct efx_nic
*efx
)
47 struct siena_nic_data
*nic_data
;
48 EFX_BUG_ON_PARANOID(efx_nic_rev(efx
) < EFX_REV_SIENA_A0
);
49 nic_data
= efx
->nic_data
;
50 return &nic_data
->mcdi
;
53 void efx_mcdi_init(struct efx_nic
*efx
)
55 struct efx_mcdi_iface
*mcdi
;
57 if (efx_nic_rev(efx
) < EFX_REV_SIENA_A0
)
61 init_waitqueue_head(&mcdi
->wq
);
62 spin_lock_init(&mcdi
->iface_lock
);
63 atomic_set(&mcdi
->state
, MCDI_STATE_QUIESCENT
);
64 mcdi
->mode
= MCDI_MODE_POLL
;
66 (void) efx_mcdi_poll_reboot(efx
);
69 static void efx_mcdi_copyin(struct efx_nic
*efx
, unsigned cmd
,
70 const u8
*inbuf
, size_t inlen
)
72 struct efx_mcdi_iface
*mcdi
= efx_mcdi(efx
);
73 unsigned pdu
= FR_CZ_MC_TREG_SMEM
+ MCDI_PDU(efx
);
74 unsigned doorbell
= FR_CZ_MC_TREG_SMEM
+ MCDI_DOORBELL(efx
);
79 BUG_ON(atomic_read(&mcdi
->state
) == MCDI_STATE_QUIESCENT
);
80 BUG_ON(inlen
& 3 || inlen
>= 0x100);
82 seqno
= mcdi
->seqno
& SEQ_MASK
;
84 if (mcdi
->mode
== MCDI_MODE_EVENTS
)
85 xflags
|= MCDI_HEADER_XFLAGS_EVREQ
;
87 EFX_POPULATE_DWORD_6(hdr
,
88 MCDI_HEADER_RESPONSE
, 0,
89 MCDI_HEADER_RESYNC
, 1,
90 MCDI_HEADER_CODE
, cmd
,
91 MCDI_HEADER_DATALEN
, inlen
,
92 MCDI_HEADER_SEQ
, seqno
,
93 MCDI_HEADER_XFLAGS
, xflags
);
95 efx_writed(efx
, &hdr
, pdu
);
97 for (i
= 0; i
< inlen
; i
+= 4)
98 _efx_writed(efx
, *((__le32
*)(inbuf
+ i
)), pdu
+ 4 + i
);
100 /* Ensure the payload is written out before the header */
103 /* ring the doorbell with a distinctive value */
104 _efx_writed(efx
, (__force __le32
) 0x45789abc, doorbell
);
107 static void efx_mcdi_copyout(struct efx_nic
*efx
, u8
*outbuf
, size_t outlen
)
109 struct efx_mcdi_iface
*mcdi
= efx_mcdi(efx
);
110 unsigned int pdu
= FR_CZ_MC_TREG_SMEM
+ MCDI_PDU(efx
);
113 BUG_ON(atomic_read(&mcdi
->state
) == MCDI_STATE_QUIESCENT
);
114 BUG_ON(outlen
& 3 || outlen
>= 0x100);
116 for (i
= 0; i
< outlen
; i
+= 4)
117 *((__le32
*)(outbuf
+ i
)) = _efx_readd(efx
, pdu
+ 4 + i
);
120 static int efx_mcdi_poll(struct efx_nic
*efx
)
122 struct efx_mcdi_iface
*mcdi
= efx_mcdi(efx
);
123 unsigned int time
, finish
;
124 unsigned int respseq
, respcmd
, error
;
125 unsigned int pdu
= FR_CZ_MC_TREG_SMEM
+ MCDI_PDU(efx
);
126 unsigned int rc
, spins
;
129 /* Check for a reboot atomically with respect to efx_mcdi_copyout() */
130 rc
= -efx_mcdi_poll_reboot(efx
);
134 /* Poll for completion. Poll quickly (once a us) for the 1st jiffy,
135 * because generally mcdi responses are fast. After that, back off
136 * and poll once a jiffy (approximately)
139 finish
= get_seconds() + MCDI_RPC_TIMEOUT
;
146 schedule_timeout_uninterruptible(1);
149 time
= get_seconds();
152 efx_readd(efx
, ®
, pdu
);
154 /* All 1's indicates that shared memory is in reset (and is
155 * not a valid header). Wait for it to come out reset before
156 * completing the command */
157 if (EFX_DWORD_FIELD(reg
, EFX_DWORD_0
) != 0xffffffff &&
158 EFX_DWORD_FIELD(reg
, MCDI_HEADER_RESPONSE
))
165 mcdi
->resplen
= EFX_DWORD_FIELD(reg
, MCDI_HEADER_DATALEN
);
166 respseq
= EFX_DWORD_FIELD(reg
, MCDI_HEADER_SEQ
);
167 respcmd
= EFX_DWORD_FIELD(reg
, MCDI_HEADER_CODE
);
168 error
= EFX_DWORD_FIELD(reg
, MCDI_HEADER_ERROR
);
170 if (error
&& mcdi
->resplen
== 0) {
171 netif_err(efx
, hw
, efx
->net_dev
, "MC rebooted\n");
173 } else if ((respseq
^ mcdi
->seqno
) & SEQ_MASK
) {
174 netif_err(efx
, hw
, efx
->net_dev
,
175 "MC response mismatch tx seq 0x%x rx seq 0x%x\n",
176 respseq
, mcdi
->seqno
);
179 efx_readd(efx
, ®
, pdu
+ 4);
180 switch (EFX_DWORD_FIELD(reg
, EFX_DWORD_0
)) {
181 #define TRANSLATE_ERROR(name) \
182 case MC_CMD_ERR_ ## name: \
185 TRANSLATE_ERROR(ENOENT
);
186 TRANSLATE_ERROR(EINTR
);
187 TRANSLATE_ERROR(EACCES
);
188 TRANSLATE_ERROR(EBUSY
);
189 TRANSLATE_ERROR(EINVAL
);
190 TRANSLATE_ERROR(EDEADLK
);
191 TRANSLATE_ERROR(ENOSYS
);
192 TRANSLATE_ERROR(ETIME
);
193 #undef TRANSLATE_ERROR
206 /* Return rc=0 like wait_event_timeout() */
210 /* Test and clear MC-rebooted flag for this port/function */
211 int efx_mcdi_poll_reboot(struct efx_nic
*efx
)
213 unsigned int addr
= FR_CZ_MC_TREG_SMEM
+ MCDI_REBOOT_FLAG(efx
);
217 if (efx_nic_rev(efx
) < EFX_REV_SIENA_A0
)
220 efx_readd(efx
, ®
, addr
);
221 value
= EFX_DWORD_FIELD(reg
, EFX_DWORD_0
);
227 efx_writed(efx
, ®
, addr
);
229 if (value
== MC_STATUS_DWORD_ASSERT
)
235 static void efx_mcdi_acquire(struct efx_mcdi_iface
*mcdi
)
237 /* Wait until the interface becomes QUIESCENT and we win the race
238 * to mark it RUNNING. */
240 atomic_cmpxchg(&mcdi
->state
,
241 MCDI_STATE_QUIESCENT
,
243 == MCDI_STATE_QUIESCENT
);
246 static int efx_mcdi_await_completion(struct efx_nic
*efx
)
248 struct efx_mcdi_iface
*mcdi
= efx_mcdi(efx
);
250 if (wait_event_timeout(
252 atomic_read(&mcdi
->state
) == MCDI_STATE_COMPLETED
,
253 msecs_to_jiffies(MCDI_RPC_TIMEOUT
* 1000)) == 0)
256 /* Check if efx_mcdi_set_mode() switched us back to polled completions.
257 * In which case, poll for completions directly. If efx_mcdi_ev_cpl()
258 * completed the request first, then we'll just end up completing the
259 * request again, which is safe.
261 * We need an smp_rmb() to synchronise with efx_mcdi_mode_poll(), which
262 * wait_event_timeout() implicitly provides.
264 if (mcdi
->mode
== MCDI_MODE_POLL
)
265 return efx_mcdi_poll(efx
);
270 static bool efx_mcdi_complete(struct efx_mcdi_iface
*mcdi
)
272 /* If the interface is RUNNING, then move to COMPLETED and wake any
273 * waiters. If the interface isn't in RUNNING then we've received a
274 * duplicate completion after we've already transitioned back to
275 * QUIESCENT. [A subsequent invocation would increment seqno, so would
276 * have failed the seqno check].
278 if (atomic_cmpxchg(&mcdi
->state
,
280 MCDI_STATE_COMPLETED
) == MCDI_STATE_RUNNING
) {
288 static void efx_mcdi_release(struct efx_mcdi_iface
*mcdi
)
290 atomic_set(&mcdi
->state
, MCDI_STATE_QUIESCENT
);
294 static void efx_mcdi_ev_cpl(struct efx_nic
*efx
, unsigned int seqno
,
295 unsigned int datalen
, unsigned int errno
)
297 struct efx_mcdi_iface
*mcdi
= efx_mcdi(efx
);
300 spin_lock(&mcdi
->iface_lock
);
302 if ((seqno
^ mcdi
->seqno
) & SEQ_MASK
) {
304 /* The request has been cancelled */
307 netif_err(efx
, hw
, efx
->net_dev
,
308 "MC response mismatch tx seq 0x%x rx "
309 "seq 0x%x\n", seqno
, mcdi
->seqno
);
311 mcdi
->resprc
= errno
;
312 mcdi
->resplen
= datalen
;
317 spin_unlock(&mcdi
->iface_lock
);
320 efx_mcdi_complete(mcdi
);
323 /* Issue the given command by writing the data into the shared memory PDU,
324 * ring the doorbell and wait for completion. Copyout the result. */
325 int efx_mcdi_rpc(struct efx_nic
*efx
, unsigned cmd
,
326 const u8
*inbuf
, size_t inlen
, u8
*outbuf
, size_t outlen
,
327 size_t *outlen_actual
)
329 struct efx_mcdi_iface
*mcdi
= efx_mcdi(efx
);
331 BUG_ON(efx_nic_rev(efx
) < EFX_REV_SIENA_A0
);
333 efx_mcdi_acquire(mcdi
);
335 /* Serialise with efx_mcdi_ev_cpl() and efx_mcdi_ev_death() */
336 spin_lock_bh(&mcdi
->iface_lock
);
338 spin_unlock_bh(&mcdi
->iface_lock
);
340 efx_mcdi_copyin(efx
, cmd
, inbuf
, inlen
);
342 if (mcdi
->mode
== MCDI_MODE_POLL
)
343 rc
= efx_mcdi_poll(efx
);
345 rc
= efx_mcdi_await_completion(efx
);
348 /* Close the race with efx_mcdi_ev_cpl() executing just too late
349 * and completing a request we've just cancelled, by ensuring
350 * that the seqno check therein fails.
352 spin_lock_bh(&mcdi
->iface_lock
);
355 spin_unlock_bh(&mcdi
->iface_lock
);
357 netif_err(efx
, hw
, efx
->net_dev
,
358 "MC command 0x%x inlen %d mode %d timed out\n",
359 cmd
, (int)inlen
, mcdi
->mode
);
363 /* At the very least we need a memory barrier here to ensure
364 * we pick up changes from efx_mcdi_ev_cpl(). Protect against
365 * a spurious efx_mcdi_ev_cpl() running concurrently by
366 * acquiring the iface_lock. */
367 spin_lock_bh(&mcdi
->iface_lock
);
369 resplen
= mcdi
->resplen
;
370 spin_unlock_bh(&mcdi
->iface_lock
);
373 efx_mcdi_copyout(efx
, outbuf
,
374 min(outlen
, mcdi
->resplen
+ 3) & ~0x3);
375 if (outlen_actual
!= NULL
)
376 *outlen_actual
= resplen
;
377 } else if (cmd
== MC_CMD_REBOOT
&& rc
== -EIO
)
378 ; /* Don't reset if MC_CMD_REBOOT returns EIO */
379 else if (rc
== -EIO
|| rc
== -EINTR
) {
380 netif_err(efx
, hw
, efx
->net_dev
, "MC fatal error %d\n",
382 efx_schedule_reset(efx
, RESET_TYPE_MC_FAILURE
);
384 netif_dbg(efx
, hw
, efx
->net_dev
,
385 "MC command 0x%x inlen %d failed rc=%d\n",
386 cmd
, (int)inlen
, -rc
);
389 efx_mcdi_release(mcdi
);
393 void efx_mcdi_mode_poll(struct efx_nic
*efx
)
395 struct efx_mcdi_iface
*mcdi
;
397 if (efx_nic_rev(efx
) < EFX_REV_SIENA_A0
)
400 mcdi
= efx_mcdi(efx
);
401 if (mcdi
->mode
== MCDI_MODE_POLL
)
404 /* We can switch from event completion to polled completion, because
405 * mcdi requests are always completed in shared memory. We do this by
406 * switching the mode to POLL'd then completing the request.
407 * efx_mcdi_await_completion() will then call efx_mcdi_poll().
409 * We need an smp_wmb() to synchronise with efx_mcdi_await_completion(),
410 * which efx_mcdi_complete() provides for us.
412 mcdi
->mode
= MCDI_MODE_POLL
;
414 efx_mcdi_complete(mcdi
);
417 void efx_mcdi_mode_event(struct efx_nic
*efx
)
419 struct efx_mcdi_iface
*mcdi
;
421 if (efx_nic_rev(efx
) < EFX_REV_SIENA_A0
)
424 mcdi
= efx_mcdi(efx
);
426 if (mcdi
->mode
== MCDI_MODE_EVENTS
)
429 /* We can't switch from polled to event completion in the middle of a
430 * request, because the completion method is specified in the request.
431 * So acquire the interface to serialise the requestors. We don't need
432 * to acquire the iface_lock to change the mode here, but we do need a
433 * write memory barrier ensure that efx_mcdi_rpc() sees it, which
434 * efx_mcdi_acquire() provides.
436 efx_mcdi_acquire(mcdi
);
437 mcdi
->mode
= MCDI_MODE_EVENTS
;
438 efx_mcdi_release(mcdi
);
441 static void efx_mcdi_ev_death(struct efx_nic
*efx
, int rc
)
443 struct efx_mcdi_iface
*mcdi
= efx_mcdi(efx
);
445 /* If there is an outstanding MCDI request, it has been terminated
446 * either by a BADASSERT or REBOOT event. If the mcdi interface is
447 * in polled mode, then do nothing because the MC reboot handler will
448 * set the header correctly. However, if the mcdi interface is waiting
449 * for a CMDDONE event it won't receive it [and since all MCDI events
450 * are sent to the same queue, we can't be racing with
453 * There's a race here with efx_mcdi_rpc(), because we might receive
454 * a REBOOT event *before* the request has been copied out. In polled
455 * mode (during startup) this is irrelevent, because efx_mcdi_complete()
456 * is ignored. In event mode, this condition is just an edge-case of
457 * receiving a REBOOT event after posting the MCDI request. Did the mc
458 * reboot before or after the copyout? The best we can do always is
459 * just return failure.
461 spin_lock(&mcdi
->iface_lock
);
462 if (efx_mcdi_complete(mcdi
)) {
463 if (mcdi
->mode
== MCDI_MODE_EVENTS
) {
469 /* Nobody was waiting for an MCDI request, so trigger a reset */
470 efx_schedule_reset(efx
, RESET_TYPE_MC_FAILURE
);
472 spin_unlock(&mcdi
->iface_lock
);
475 static unsigned int efx_mcdi_event_link_speed
[] = {
476 [MCDI_EVENT_LINKCHANGE_SPEED_100M
] = 100,
477 [MCDI_EVENT_LINKCHANGE_SPEED_1G
] = 1000,
478 [MCDI_EVENT_LINKCHANGE_SPEED_10G
] = 10000,
482 static void efx_mcdi_process_link_change(struct efx_nic
*efx
, efx_qword_t
*ev
)
484 u32 flags
, fcntl
, speed
, lpa
;
486 speed
= EFX_QWORD_FIELD(*ev
, MCDI_EVENT_LINKCHANGE_SPEED
);
487 EFX_BUG_ON_PARANOID(speed
>= ARRAY_SIZE(efx_mcdi_event_link_speed
));
488 speed
= efx_mcdi_event_link_speed
[speed
];
490 flags
= EFX_QWORD_FIELD(*ev
, MCDI_EVENT_LINKCHANGE_LINK_FLAGS
);
491 fcntl
= EFX_QWORD_FIELD(*ev
, MCDI_EVENT_LINKCHANGE_FCNTL
);
492 lpa
= EFX_QWORD_FIELD(*ev
, MCDI_EVENT_LINKCHANGE_LP_CAP
);
494 /* efx->link_state is only modified by efx_mcdi_phy_get_link(),
495 * which is only run after flushing the event queues. Therefore, it
496 * is safe to modify the link state outside of the mac_lock here.
498 efx_mcdi_phy_decode_link(efx
, &efx
->link_state
, speed
, flags
, fcntl
);
500 efx_mcdi_phy_check_fcntl(efx
, lpa
);
502 efx_link_status_changed(efx
);
505 static const char *sensor_names
[] = {
506 [MC_CMD_SENSOR_CONTROLLER_TEMP
] = "Controller temp. sensor",
507 [MC_CMD_SENSOR_PHY_COMMON_TEMP
] = "PHY shared temp. sensor",
508 [MC_CMD_SENSOR_CONTROLLER_COOLING
] = "Controller cooling",
509 [MC_CMD_SENSOR_PHY0_TEMP
] = "PHY 0 temp. sensor",
510 [MC_CMD_SENSOR_PHY0_COOLING
] = "PHY 0 cooling",
511 [MC_CMD_SENSOR_PHY1_TEMP
] = "PHY 1 temp. sensor",
512 [MC_CMD_SENSOR_PHY1_COOLING
] = "PHY 1 cooling",
513 [MC_CMD_SENSOR_IN_1V0
] = "1.0V supply sensor",
514 [MC_CMD_SENSOR_IN_1V2
] = "1.2V supply sensor",
515 [MC_CMD_SENSOR_IN_1V8
] = "1.8V supply sensor",
516 [MC_CMD_SENSOR_IN_2V5
] = "2.5V supply sensor",
517 [MC_CMD_SENSOR_IN_3V3
] = "3.3V supply sensor",
518 [MC_CMD_SENSOR_IN_12V0
] = "12V supply sensor"
521 static const char *sensor_status_names
[] = {
522 [MC_CMD_SENSOR_STATE_OK
] = "OK",
523 [MC_CMD_SENSOR_STATE_WARNING
] = "Warning",
524 [MC_CMD_SENSOR_STATE_FATAL
] = "Fatal",
525 [MC_CMD_SENSOR_STATE_BROKEN
] = "Device failure",
528 static void efx_mcdi_sensor_event(struct efx_nic
*efx
, efx_qword_t
*ev
)
530 unsigned int monitor
, state
, value
;
531 const char *name
, *state_txt
;
532 monitor
= EFX_QWORD_FIELD(*ev
, MCDI_EVENT_SENSOREVT_MONITOR
);
533 state
= EFX_QWORD_FIELD(*ev
, MCDI_EVENT_SENSOREVT_STATE
);
534 value
= EFX_QWORD_FIELD(*ev
, MCDI_EVENT_SENSOREVT_VALUE
);
535 /* Deal gracefully with the board having more drivers than we
536 * know about, but do not expect new sensor states. */
537 name
= (monitor
>= ARRAY_SIZE(sensor_names
))
538 ? "No sensor name available" :
539 sensor_names
[monitor
];
540 EFX_BUG_ON_PARANOID(state
>= ARRAY_SIZE(sensor_status_names
));
541 state_txt
= sensor_status_names
[state
];
543 netif_err(efx
, hw
, efx
->net_dev
,
544 "Sensor %d (%s) reports condition '%s' for raw value %d\n",
545 monitor
, name
, state_txt
, value
);
548 /* Called from falcon_process_eventq for MCDI events */
549 void efx_mcdi_process_event(struct efx_channel
*channel
,
552 struct efx_nic
*efx
= channel
->efx
;
553 int code
= EFX_QWORD_FIELD(*event
, MCDI_EVENT_CODE
);
554 u32 data
= EFX_QWORD_FIELD(*event
, MCDI_EVENT_DATA
);
557 case MCDI_EVENT_CODE_BADSSERT
:
558 netif_err(efx
, hw
, efx
->net_dev
,
559 "MC watchdog or assertion failure at 0x%x\n", data
);
560 efx_mcdi_ev_death(efx
, EINTR
);
563 case MCDI_EVENT_CODE_PMNOTICE
:
564 netif_info(efx
, wol
, efx
->net_dev
, "MCDI PM event.\n");
567 case MCDI_EVENT_CODE_CMDDONE
:
569 MCDI_EVENT_FIELD(*event
, CMDDONE_SEQ
),
570 MCDI_EVENT_FIELD(*event
, CMDDONE_DATALEN
),
571 MCDI_EVENT_FIELD(*event
, CMDDONE_ERRNO
));
574 case MCDI_EVENT_CODE_LINKCHANGE
:
575 efx_mcdi_process_link_change(efx
, event
);
577 case MCDI_EVENT_CODE_SENSOREVT
:
578 efx_mcdi_sensor_event(efx
, event
);
580 case MCDI_EVENT_CODE_SCHEDERR
:
581 netif_info(efx
, hw
, efx
->net_dev
,
582 "MC Scheduler error address=0x%x\n", data
);
584 case MCDI_EVENT_CODE_REBOOT
:
585 netif_info(efx
, hw
, efx
->net_dev
, "MC Reboot\n");
586 efx_mcdi_ev_death(efx
, EIO
);
588 case MCDI_EVENT_CODE_MAC_STATS_DMA
:
589 /* MAC stats are gather lazily. We can ignore this. */
593 netif_err(efx
, hw
, efx
->net_dev
, "Unknown MCDI event 0x%x\n",
598 /**************************************************************************
600 * Specific request functions
602 **************************************************************************
605 int efx_mcdi_fwver(struct efx_nic
*efx
, u64
*version
, u32
*build
)
607 u8 outbuf
[ALIGN(MC_CMD_GET_VERSION_V1_OUT_LEN
, 4)];
609 const __le16
*ver_words
;
612 BUILD_BUG_ON(MC_CMD_GET_VERSION_IN_LEN
!= 0);
614 rc
= efx_mcdi_rpc(efx
, MC_CMD_GET_VERSION
, NULL
, 0,
615 outbuf
, sizeof(outbuf
), &outlength
);
619 if (outlength
== MC_CMD_GET_VERSION_V0_OUT_LEN
) {
621 *build
= MCDI_DWORD(outbuf
, GET_VERSION_OUT_FIRMWARE
);
625 if (outlength
< MC_CMD_GET_VERSION_V1_OUT_LEN
) {
630 ver_words
= (__le16
*)MCDI_PTR(outbuf
, GET_VERSION_OUT_VERSION
);
631 *version
= (((u64
)le16_to_cpu(ver_words
[0]) << 48) |
632 ((u64
)le16_to_cpu(ver_words
[1]) << 32) |
633 ((u64
)le16_to_cpu(ver_words
[2]) << 16) |
634 le16_to_cpu(ver_words
[3]));
635 *build
= MCDI_DWORD(outbuf
, GET_VERSION_OUT_FIRMWARE
);
640 netif_err(efx
, probe
, efx
->net_dev
, "%s: failed rc=%d\n", __func__
, rc
);
644 int efx_mcdi_drv_attach(struct efx_nic
*efx
, bool driver_operating
,
647 u8 inbuf
[MC_CMD_DRV_ATTACH_IN_LEN
];
648 u8 outbuf
[MC_CMD_DRV_ATTACH_OUT_LEN
];
652 MCDI_SET_DWORD(inbuf
, DRV_ATTACH_IN_NEW_STATE
,
653 driver_operating
? 1 : 0);
654 MCDI_SET_DWORD(inbuf
, DRV_ATTACH_IN_UPDATE
, 1);
656 rc
= efx_mcdi_rpc(efx
, MC_CMD_DRV_ATTACH
, inbuf
, sizeof(inbuf
),
657 outbuf
, sizeof(outbuf
), &outlen
);
660 if (outlen
< MC_CMD_DRV_ATTACH_OUT_LEN
) {
665 if (was_attached
!= NULL
)
666 *was_attached
= MCDI_DWORD(outbuf
, DRV_ATTACH_OUT_OLD_STATE
);
670 netif_err(efx
, probe
, efx
->net_dev
, "%s: failed rc=%d\n", __func__
, rc
);
674 int efx_mcdi_get_board_cfg(struct efx_nic
*efx
, u8
*mac_address
,
675 u16
*fw_subtype_list
)
677 uint8_t outbuf
[MC_CMD_GET_BOARD_CFG_OUT_LEN
];
679 int port_num
= efx_port_num(efx
);
683 BUILD_BUG_ON(MC_CMD_GET_BOARD_CFG_IN_LEN
!= 0);
685 rc
= efx_mcdi_rpc(efx
, MC_CMD_GET_BOARD_CFG
, NULL
, 0,
686 outbuf
, sizeof(outbuf
), &outlen
);
690 if (outlen
< MC_CMD_GET_BOARD_CFG_OUT_LEN
) {
696 ? MC_CMD_GET_BOARD_CFG_OUT_MAC_ADDR_BASE_PORT1_OFST
697 : MC_CMD_GET_BOARD_CFG_OUT_MAC_ADDR_BASE_PORT0_OFST
;
699 memcpy(mac_address
, outbuf
+ offset
, ETH_ALEN
);
701 memcpy(fw_subtype_list
,
702 outbuf
+ MC_CMD_GET_BOARD_CFG_OUT_FW_SUBTYPE_LIST_OFST
,
703 MC_CMD_GET_BOARD_CFG_OUT_FW_SUBTYPE_LIST_LEN
);
708 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed rc=%d len=%d\n",
709 __func__
, rc
, (int)outlen
);
714 int efx_mcdi_log_ctrl(struct efx_nic
*efx
, bool evq
, bool uart
, u32 dest_evq
)
716 u8 inbuf
[MC_CMD_LOG_CTRL_IN_LEN
];
721 dest
|= MC_CMD_LOG_CTRL_IN_LOG_DEST_UART
;
723 dest
|= MC_CMD_LOG_CTRL_IN_LOG_DEST_EVQ
;
725 MCDI_SET_DWORD(inbuf
, LOG_CTRL_IN_LOG_DEST
, dest
);
726 MCDI_SET_DWORD(inbuf
, LOG_CTRL_IN_LOG_DEST_EVQ
, dest_evq
);
728 BUILD_BUG_ON(MC_CMD_LOG_CTRL_OUT_LEN
!= 0);
730 rc
= efx_mcdi_rpc(efx
, MC_CMD_LOG_CTRL
, inbuf
, sizeof(inbuf
),
738 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed rc=%d\n", __func__
, rc
);
742 int efx_mcdi_nvram_types(struct efx_nic
*efx
, u32
*nvram_types_out
)
744 u8 outbuf
[MC_CMD_NVRAM_TYPES_OUT_LEN
];
748 BUILD_BUG_ON(MC_CMD_NVRAM_TYPES_IN_LEN
!= 0);
750 rc
= efx_mcdi_rpc(efx
, MC_CMD_NVRAM_TYPES
, NULL
, 0,
751 outbuf
, sizeof(outbuf
), &outlen
);
754 if (outlen
< MC_CMD_NVRAM_TYPES_OUT_LEN
) {
759 *nvram_types_out
= MCDI_DWORD(outbuf
, NVRAM_TYPES_OUT_TYPES
);
763 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed rc=%d\n",
768 int efx_mcdi_nvram_info(struct efx_nic
*efx
, unsigned int type
,
769 size_t *size_out
, size_t *erase_size_out
,
772 u8 inbuf
[MC_CMD_NVRAM_INFO_IN_LEN
];
773 u8 outbuf
[MC_CMD_NVRAM_INFO_OUT_LEN
];
777 MCDI_SET_DWORD(inbuf
, NVRAM_INFO_IN_TYPE
, type
);
779 rc
= efx_mcdi_rpc(efx
, MC_CMD_NVRAM_INFO
, inbuf
, sizeof(inbuf
),
780 outbuf
, sizeof(outbuf
), &outlen
);
783 if (outlen
< MC_CMD_NVRAM_INFO_OUT_LEN
) {
788 *size_out
= MCDI_DWORD(outbuf
, NVRAM_INFO_OUT_SIZE
);
789 *erase_size_out
= MCDI_DWORD(outbuf
, NVRAM_INFO_OUT_ERASESIZE
);
790 *protected_out
= !!(MCDI_DWORD(outbuf
, NVRAM_INFO_OUT_FLAGS
) &
791 (1 << MC_CMD_NVRAM_PROTECTED_LBN
));
795 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed rc=%d\n", __func__
, rc
);
799 int efx_mcdi_nvram_update_start(struct efx_nic
*efx
, unsigned int type
)
801 u8 inbuf
[MC_CMD_NVRAM_UPDATE_START_IN_LEN
];
804 MCDI_SET_DWORD(inbuf
, NVRAM_UPDATE_START_IN_TYPE
, type
);
806 BUILD_BUG_ON(MC_CMD_NVRAM_UPDATE_START_OUT_LEN
!= 0);
808 rc
= efx_mcdi_rpc(efx
, MC_CMD_NVRAM_UPDATE_START
, inbuf
, sizeof(inbuf
),
816 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed rc=%d\n", __func__
, rc
);
820 int efx_mcdi_nvram_read(struct efx_nic
*efx
, unsigned int type
,
821 loff_t offset
, u8
*buffer
, size_t length
)
823 u8 inbuf
[MC_CMD_NVRAM_READ_IN_LEN
];
824 u8 outbuf
[MC_CMD_NVRAM_READ_OUT_LEN(EFX_MCDI_NVRAM_LEN_MAX
)];
828 MCDI_SET_DWORD(inbuf
, NVRAM_READ_IN_TYPE
, type
);
829 MCDI_SET_DWORD(inbuf
, NVRAM_READ_IN_OFFSET
, offset
);
830 MCDI_SET_DWORD(inbuf
, NVRAM_READ_IN_LENGTH
, length
);
832 rc
= efx_mcdi_rpc(efx
, MC_CMD_NVRAM_READ
, inbuf
, sizeof(inbuf
),
833 outbuf
, sizeof(outbuf
), &outlen
);
837 memcpy(buffer
, MCDI_PTR(outbuf
, NVRAM_READ_OUT_READ_BUFFER
), length
);
841 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed rc=%d\n", __func__
, rc
);
845 int efx_mcdi_nvram_write(struct efx_nic
*efx
, unsigned int type
,
846 loff_t offset
, const u8
*buffer
, size_t length
)
848 u8 inbuf
[MC_CMD_NVRAM_WRITE_IN_LEN(EFX_MCDI_NVRAM_LEN_MAX
)];
851 MCDI_SET_DWORD(inbuf
, NVRAM_WRITE_IN_TYPE
, type
);
852 MCDI_SET_DWORD(inbuf
, NVRAM_WRITE_IN_OFFSET
, offset
);
853 MCDI_SET_DWORD(inbuf
, NVRAM_WRITE_IN_LENGTH
, length
);
854 memcpy(MCDI_PTR(inbuf
, NVRAM_WRITE_IN_WRITE_BUFFER
), buffer
, length
);
856 BUILD_BUG_ON(MC_CMD_NVRAM_WRITE_OUT_LEN
!= 0);
858 rc
= efx_mcdi_rpc(efx
, MC_CMD_NVRAM_WRITE
, inbuf
,
859 ALIGN(MC_CMD_NVRAM_WRITE_IN_LEN(length
), 4),
867 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed rc=%d\n", __func__
, rc
);
871 int efx_mcdi_nvram_erase(struct efx_nic
*efx
, unsigned int type
,
872 loff_t offset
, size_t length
)
874 u8 inbuf
[MC_CMD_NVRAM_ERASE_IN_LEN
];
877 MCDI_SET_DWORD(inbuf
, NVRAM_ERASE_IN_TYPE
, type
);
878 MCDI_SET_DWORD(inbuf
, NVRAM_ERASE_IN_OFFSET
, offset
);
879 MCDI_SET_DWORD(inbuf
, NVRAM_ERASE_IN_LENGTH
, length
);
881 BUILD_BUG_ON(MC_CMD_NVRAM_ERASE_OUT_LEN
!= 0);
883 rc
= efx_mcdi_rpc(efx
, MC_CMD_NVRAM_ERASE
, inbuf
, sizeof(inbuf
),
891 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed rc=%d\n", __func__
, rc
);
895 int efx_mcdi_nvram_update_finish(struct efx_nic
*efx
, unsigned int type
)
897 u8 inbuf
[MC_CMD_NVRAM_UPDATE_FINISH_IN_LEN
];
900 MCDI_SET_DWORD(inbuf
, NVRAM_UPDATE_FINISH_IN_TYPE
, type
);
902 BUILD_BUG_ON(MC_CMD_NVRAM_UPDATE_FINISH_OUT_LEN
!= 0);
904 rc
= efx_mcdi_rpc(efx
, MC_CMD_NVRAM_UPDATE_FINISH
, inbuf
, sizeof(inbuf
),
912 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed rc=%d\n", __func__
, rc
);
916 static int efx_mcdi_nvram_test(struct efx_nic
*efx
, unsigned int type
)
918 u8 inbuf
[MC_CMD_NVRAM_TEST_IN_LEN
];
919 u8 outbuf
[MC_CMD_NVRAM_TEST_OUT_LEN
];
922 MCDI_SET_DWORD(inbuf
, NVRAM_TEST_IN_TYPE
, type
);
924 rc
= efx_mcdi_rpc(efx
, MC_CMD_NVRAM_TEST
, inbuf
, sizeof(inbuf
),
925 outbuf
, sizeof(outbuf
), NULL
);
929 switch (MCDI_DWORD(outbuf
, NVRAM_TEST_OUT_RESULT
)) {
930 case MC_CMD_NVRAM_TEST_PASS
:
931 case MC_CMD_NVRAM_TEST_NOTSUPP
:
938 int efx_mcdi_nvram_test_all(struct efx_nic
*efx
)
944 rc
= efx_mcdi_nvram_types(efx
, &nvram_types
);
949 while (nvram_types
!= 0) {
950 if (nvram_types
& 1) {
951 rc
= efx_mcdi_nvram_test(efx
, type
);
962 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed type=%u\n",
965 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed rc=%d\n", __func__
, rc
);
969 static int efx_mcdi_read_assertion(struct efx_nic
*efx
)
971 u8 inbuf
[MC_CMD_GET_ASSERTS_IN_LEN
];
972 u8 outbuf
[MC_CMD_GET_ASSERTS_OUT_LEN
];
973 unsigned int flags
, index
, ofst
;
979 /* Attempt to read any stored assertion state before we reboot
980 * the mcfw out of the assertion handler. Retry twice, once
981 * because a boot-time assertion might cause this command to fail
982 * with EINTR. And once again because GET_ASSERTS can race with
983 * MC_CMD_REBOOT running on the other port. */
986 MCDI_SET_DWORD(inbuf
, GET_ASSERTS_IN_CLEAR
, 1);
987 rc
= efx_mcdi_rpc(efx
, MC_CMD_GET_ASSERTS
,
988 inbuf
, MC_CMD_GET_ASSERTS_IN_LEN
,
989 outbuf
, sizeof(outbuf
), &outlen
);
990 } while ((rc
== -EINTR
|| rc
== -EIO
) && retry
-- > 0);
994 if (outlen
< MC_CMD_GET_ASSERTS_OUT_LEN
)
997 /* Print out any recorded assertion state */
998 flags
= MCDI_DWORD(outbuf
, GET_ASSERTS_OUT_GLOBAL_FLAGS
);
999 if (flags
== MC_CMD_GET_ASSERTS_FLAGS_NO_FAILS
)
1002 reason
= (flags
== MC_CMD_GET_ASSERTS_FLAGS_SYS_FAIL
)
1003 ? "system-level assertion"
1004 : (flags
== MC_CMD_GET_ASSERTS_FLAGS_THR_FAIL
)
1005 ? "thread-level assertion"
1006 : (flags
== MC_CMD_GET_ASSERTS_FLAGS_WDOG_FIRED
)
1008 : "unknown assertion";
1009 netif_err(efx
, hw
, efx
->net_dev
,
1010 "MCPU %s at PC = 0x%.8x in thread 0x%.8x\n", reason
,
1011 MCDI_DWORD(outbuf
, GET_ASSERTS_OUT_SAVED_PC_OFFS
),
1012 MCDI_DWORD(outbuf
, GET_ASSERTS_OUT_THREAD_OFFS
));
1014 /* Print out the registers */
1015 ofst
= MC_CMD_GET_ASSERTS_OUT_GP_REGS_OFFS_OFST
;
1016 for (index
= 1; index
< 32; index
++) {
1017 netif_err(efx
, hw
, efx
->net_dev
, "R%.2d (?): 0x%.8x\n", index
,
1018 MCDI_DWORD2(outbuf
, ofst
));
1019 ofst
+= sizeof(efx_dword_t
);
1025 static void efx_mcdi_exit_assertion(struct efx_nic
*efx
)
1027 u8 inbuf
[MC_CMD_REBOOT_IN_LEN
];
1029 /* Atomically reboot the mcfw out of the assertion handler */
1030 BUILD_BUG_ON(MC_CMD_REBOOT_OUT_LEN
!= 0);
1031 MCDI_SET_DWORD(inbuf
, REBOOT_IN_FLAGS
,
1032 MC_CMD_REBOOT_FLAGS_AFTER_ASSERTION
);
1033 efx_mcdi_rpc(efx
, MC_CMD_REBOOT
, inbuf
, MC_CMD_REBOOT_IN_LEN
,
1037 int efx_mcdi_handle_assertion(struct efx_nic
*efx
)
1041 rc
= efx_mcdi_read_assertion(efx
);
1045 efx_mcdi_exit_assertion(efx
);
1050 void efx_mcdi_set_id_led(struct efx_nic
*efx
, enum efx_led_mode mode
)
1052 u8 inbuf
[MC_CMD_SET_ID_LED_IN_LEN
];
1055 BUILD_BUG_ON(EFX_LED_OFF
!= MC_CMD_LED_OFF
);
1056 BUILD_BUG_ON(EFX_LED_ON
!= MC_CMD_LED_ON
);
1057 BUILD_BUG_ON(EFX_LED_DEFAULT
!= MC_CMD_LED_DEFAULT
);
1059 BUILD_BUG_ON(MC_CMD_SET_ID_LED_OUT_LEN
!= 0);
1061 MCDI_SET_DWORD(inbuf
, SET_ID_LED_IN_STATE
, mode
);
1063 rc
= efx_mcdi_rpc(efx
, MC_CMD_SET_ID_LED
, inbuf
, sizeof(inbuf
),
1066 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed rc=%d\n",
1070 int efx_mcdi_reset_port(struct efx_nic
*efx
)
1072 int rc
= efx_mcdi_rpc(efx
, MC_CMD_PORT_RESET
, NULL
, 0, NULL
, 0, NULL
);
1074 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed rc=%d\n",
1079 int efx_mcdi_reset_mc(struct efx_nic
*efx
)
1081 u8 inbuf
[MC_CMD_REBOOT_IN_LEN
];
1084 BUILD_BUG_ON(MC_CMD_REBOOT_OUT_LEN
!= 0);
1085 MCDI_SET_DWORD(inbuf
, REBOOT_IN_FLAGS
, 0);
1086 rc
= efx_mcdi_rpc(efx
, MC_CMD_REBOOT
, inbuf
, sizeof(inbuf
),
1088 /* White is black, and up is down */
1093 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed rc=%d\n", __func__
, rc
);
1097 static int efx_mcdi_wol_filter_set(struct efx_nic
*efx
, u32 type
,
1098 const u8
*mac
, int *id_out
)
1100 u8 inbuf
[MC_CMD_WOL_FILTER_SET_IN_LEN
];
1101 u8 outbuf
[MC_CMD_WOL_FILTER_SET_OUT_LEN
];
1105 MCDI_SET_DWORD(inbuf
, WOL_FILTER_SET_IN_WOL_TYPE
, type
);
1106 MCDI_SET_DWORD(inbuf
, WOL_FILTER_SET_IN_FILTER_MODE
,
1107 MC_CMD_FILTER_MODE_SIMPLE
);
1108 memcpy(MCDI_PTR(inbuf
, WOL_FILTER_SET_IN_MAGIC_MAC
), mac
, ETH_ALEN
);
1110 rc
= efx_mcdi_rpc(efx
, MC_CMD_WOL_FILTER_SET
, inbuf
, sizeof(inbuf
),
1111 outbuf
, sizeof(outbuf
), &outlen
);
1115 if (outlen
< MC_CMD_WOL_FILTER_SET_OUT_LEN
) {
1120 *id_out
= (int)MCDI_DWORD(outbuf
, WOL_FILTER_SET_OUT_FILTER_ID
);
1126 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed rc=%d\n", __func__
, rc
);
1133 efx_mcdi_wol_filter_set_magic(struct efx_nic
*efx
, const u8
*mac
, int *id_out
)
1135 return efx_mcdi_wol_filter_set(efx
, MC_CMD_WOL_TYPE_MAGIC
, mac
, id_out
);
1139 int efx_mcdi_wol_filter_get_magic(struct efx_nic
*efx
, int *id_out
)
1141 u8 outbuf
[MC_CMD_WOL_FILTER_GET_OUT_LEN
];
1145 rc
= efx_mcdi_rpc(efx
, MC_CMD_WOL_FILTER_GET
, NULL
, 0,
1146 outbuf
, sizeof(outbuf
), &outlen
);
1150 if (outlen
< MC_CMD_WOL_FILTER_GET_OUT_LEN
) {
1155 *id_out
= (int)MCDI_DWORD(outbuf
, WOL_FILTER_GET_OUT_FILTER_ID
);
1161 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed rc=%d\n", __func__
, rc
);
1166 int efx_mcdi_wol_filter_remove(struct efx_nic
*efx
, int id
)
1168 u8 inbuf
[MC_CMD_WOL_FILTER_REMOVE_IN_LEN
];
1171 MCDI_SET_DWORD(inbuf
, WOL_FILTER_REMOVE_IN_FILTER_ID
, (u32
)id
);
1173 rc
= efx_mcdi_rpc(efx
, MC_CMD_WOL_FILTER_REMOVE
, inbuf
, sizeof(inbuf
),
1181 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed rc=%d\n", __func__
, rc
);
1186 int efx_mcdi_wol_filter_reset(struct efx_nic
*efx
)
1190 rc
= efx_mcdi_rpc(efx
, MC_CMD_WOL_FILTER_RESET
, NULL
, 0, NULL
, 0, NULL
);
1197 netif_err(efx
, hw
, efx
->net_dev
, "%s: failed rc=%d\n", __func__
, rc
);