1 // SPDX-License-Identifier: GPL-2.0
2 #include "qlge.h"
3
ql_unpause_mpi_risc(struct ql_adapter * qdev)4 int ql_unpause_mpi_risc(struct ql_adapter *qdev)
5 {
6 u32 tmp;
7
8 /* Un-pause the RISC */
9 tmp = ql_read32(qdev, CSR);
10 if (!(tmp & CSR_RP))
11 return -EIO;
12
13 ql_write32(qdev, CSR, CSR_CMD_CLR_PAUSE);
14 return 0;
15 }
16
ql_pause_mpi_risc(struct ql_adapter * qdev)17 int ql_pause_mpi_risc(struct ql_adapter *qdev)
18 {
19 u32 tmp;
20 int count;
21
22 /* Pause the RISC */
23 ql_write32(qdev, CSR, CSR_CMD_SET_PAUSE);
24 for (count = UDELAY_COUNT; count; count--) {
25 tmp = ql_read32(qdev, CSR);
26 if (tmp & CSR_RP)
27 break;
28 mdelay(UDELAY_DELAY);
29 }
30 return (count == 0) ? -ETIMEDOUT : 0;
31 }
32
ql_hard_reset_mpi_risc(struct ql_adapter * qdev)33 int ql_hard_reset_mpi_risc(struct ql_adapter *qdev)
34 {
35 u32 tmp;
36 int count;
37
38 /* Reset the RISC */
39 ql_write32(qdev, CSR, CSR_CMD_SET_RST);
40 for (count = UDELAY_COUNT; count; count--) {
41 tmp = ql_read32(qdev, CSR);
42 if (tmp & CSR_RR) {
43 ql_write32(qdev, CSR, CSR_CMD_CLR_RST);
44 break;
45 }
46 mdelay(UDELAY_DELAY);
47 }
48 return (count == 0) ? -ETIMEDOUT : 0;
49 }
50
ql_read_mpi_reg(struct ql_adapter * qdev,u32 reg,u32 * data)51 int ql_read_mpi_reg(struct ql_adapter *qdev, u32 reg, u32 *data)
52 {
53 int status;
54 /* wait for reg to come ready */
55 status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
56 if (status)
57 goto exit;
58 /* set up for reg read */
59 ql_write32(qdev, PROC_ADDR, reg | PROC_ADDR_R);
60 /* wait for reg to come ready */
61 status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
62 if (status)
63 goto exit;
64 /* get the data */
65 *data = ql_read32(qdev, PROC_DATA);
66 exit:
67 return status;
68 }
69
ql_write_mpi_reg(struct ql_adapter * qdev,u32 reg,u32 data)70 int ql_write_mpi_reg(struct ql_adapter *qdev, u32 reg, u32 data)
71 {
72 int status = 0;
73 /* wait for reg to come ready */
74 status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
75 if (status)
76 goto exit;
77 /* write the data to the data reg */
78 ql_write32(qdev, PROC_DATA, data);
79 /* trigger the write */
80 ql_write32(qdev, PROC_ADDR, reg);
81 /* wait for reg to come ready */
82 status = ql_wait_reg_rdy(qdev, PROC_ADDR, PROC_ADDR_RDY, PROC_ADDR_ERR);
83 if (status)
84 goto exit;
85 exit:
86 return status;
87 }
88
ql_soft_reset_mpi_risc(struct ql_adapter * qdev)89 int ql_soft_reset_mpi_risc(struct ql_adapter *qdev)
90 {
91 return ql_write_mpi_reg(qdev, 0x00001010, 1);
92 }
93
94 /* Determine if we are in charge of the firwmare. If
95 * we are the lower of the 2 NIC pcie functions, or if
96 * we are the higher function and the lower function
97 * is not enabled.
98 */
ql_own_firmware(struct ql_adapter * qdev)99 int ql_own_firmware(struct ql_adapter *qdev)
100 {
101 u32 temp;
102
103 /* If we are the lower of the 2 NIC functions
104 * on the chip the we are responsible for
105 * core dump and firmware reset after an error.
106 */
107 if (qdev->func < qdev->alt_func)
108 return 1;
109
110 /* If we are the higher of the 2 NIC functions
111 * on the chip and the lower function is not
112 * enabled, then we are responsible for
113 * core dump and firmware reset after an error.
114 */
115 temp = ql_read32(qdev, STS);
116 if (!(temp & (1 << (8 + qdev->alt_func))))
117 return 1;
118
119 return 0;
120 }
121
ql_get_mb_sts(struct ql_adapter * qdev,struct mbox_params * mbcp)122 static int ql_get_mb_sts(struct ql_adapter *qdev, struct mbox_params *mbcp)
123 {
124 int i, status;
125
126 status = ql_sem_spinlock(qdev, SEM_PROC_REG_MASK);
127 if (status)
128 return -EBUSY;
129 for (i = 0; i < mbcp->out_count; i++) {
130 status =
131 ql_read_mpi_reg(qdev, qdev->mailbox_out + i,
132 &mbcp->mbox_out[i]);
133 if (status) {
134 netif_err(qdev, drv, qdev->ndev, "Failed mailbox read.\n");
135 break;
136 }
137 }
138 ql_sem_unlock(qdev, SEM_PROC_REG_MASK); /* does flush too */
139 return status;
140 }
141
142 /* Wait for a single mailbox command to complete.
143 * Returns zero on success.
144 */
ql_wait_mbx_cmd_cmplt(struct ql_adapter * qdev)145 static int ql_wait_mbx_cmd_cmplt(struct ql_adapter *qdev)
146 {
147 int count;
148 u32 value;
149
150 for (count = 100; count; count--) {
151 value = ql_read32(qdev, STS);
152 if (value & STS_PI)
153 return 0;
154 mdelay(UDELAY_DELAY); /* 100ms */
155 }
156 return -ETIMEDOUT;
157 }
158
159 /* Execute a single mailbox command.
160 * Caller must hold PROC_ADDR semaphore.
161 */
ql_exec_mb_cmd(struct ql_adapter * qdev,struct mbox_params * mbcp)162 static int ql_exec_mb_cmd(struct ql_adapter *qdev, struct mbox_params *mbcp)
163 {
164 int i, status;
165
166 /*
167 * Make sure there's nothing pending.
168 * This shouldn't happen.
169 */
170 if (ql_read32(qdev, CSR) & CSR_HRI)
171 return -EIO;
172
173 status = ql_sem_spinlock(qdev, SEM_PROC_REG_MASK);
174 if (status)
175 return status;
176
177 /*
178 * Fill the outbound mailboxes.
179 */
180 for (i = 0; i < mbcp->in_count; i++) {
181 status = ql_write_mpi_reg(qdev, qdev->mailbox_in + i,
182 mbcp->mbox_in[i]);
183 if (status)
184 goto end;
185 }
186 /*
187 * Wake up the MPI firmware.
188 */
189 ql_write32(qdev, CSR, CSR_CMD_SET_H2R_INT);
190 end:
191 ql_sem_unlock(qdev, SEM_PROC_REG_MASK);
192 return status;
193 }
194
195 /* We are being asked by firmware to accept
196 * a change to the port. This is only
197 * a change to max frame sizes (Tx/Rx), pause
198 * parameters, or loopback mode. We wake up a worker
199 * to handler processing this since a mailbox command
200 * will need to be sent to ACK the request.
201 */
ql_idc_req_aen(struct ql_adapter * qdev)202 static int ql_idc_req_aen(struct ql_adapter *qdev)
203 {
204 int status;
205 struct mbox_params *mbcp = &qdev->idc_mbc;
206
207 netif_err(qdev, drv, qdev->ndev, "Enter!\n");
208 /* Get the status data and start up a thread to
209 * handle the request.
210 */
211 mbcp->out_count = 4;
212 status = ql_get_mb_sts(qdev, mbcp);
213 if (status) {
214 netif_err(qdev, drv, qdev->ndev,
215 "Could not read MPI, resetting ASIC!\n");
216 ql_queue_asic_error(qdev);
217 } else {
218 /* Begin polled mode early so
219 * we don't get another interrupt
220 * when we leave mpi_worker.
221 */
222 ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16));
223 queue_delayed_work(qdev->workqueue, &qdev->mpi_idc_work, 0);
224 }
225 return status;
226 }
227
228 /* Process an inter-device event completion.
229 * If good, signal the caller's completion.
230 */
ql_idc_cmplt_aen(struct ql_adapter * qdev)231 static int ql_idc_cmplt_aen(struct ql_adapter *qdev)
232 {
233 int status;
234 struct mbox_params *mbcp = &qdev->idc_mbc;
235
236 mbcp->out_count = 4;
237 status = ql_get_mb_sts(qdev, mbcp);
238 if (status) {
239 netif_err(qdev, drv, qdev->ndev,
240 "Could not read MPI, resetting RISC!\n");
241 ql_queue_fw_error(qdev);
242 } else {
243 /* Wake up the sleeping mpi_idc_work thread that is
244 * waiting for this event.
245 */
246 complete(&qdev->ide_completion);
247 }
248 return status;
249 }
250
ql_link_up(struct ql_adapter * qdev,struct mbox_params * mbcp)251 static void ql_link_up(struct ql_adapter *qdev, struct mbox_params *mbcp)
252 {
253 int status;
254
255 mbcp->out_count = 2;
256
257 status = ql_get_mb_sts(qdev, mbcp);
258 if (status) {
259 netif_err(qdev, drv, qdev->ndev,
260 "%s: Could not get mailbox status.\n", __func__);
261 return;
262 }
263
264 qdev->link_status = mbcp->mbox_out[1];
265 netif_err(qdev, drv, qdev->ndev, "Link Up.\n");
266
267 /* If we're coming back from an IDC event
268 * then set up the CAM and frame routing.
269 */
270 if (test_bit(QL_CAM_RT_SET, &qdev->flags)) {
271 status = ql_cam_route_initialize(qdev);
272 if (status) {
273 netif_err(qdev, ifup, qdev->ndev,
274 "Failed to init CAM/Routing tables.\n");
275 return;
276 }
277 clear_bit(QL_CAM_RT_SET, &qdev->flags);
278 }
279
280 /* Queue up a worker to check the frame
281 * size information, and fix it if it's not
282 * to our liking.
283 */
284 if (!test_bit(QL_PORT_CFG, &qdev->flags)) {
285 netif_err(qdev, drv, qdev->ndev, "Queue Port Config Worker!\n");
286 set_bit(QL_PORT_CFG, &qdev->flags);
287 /* Begin polled mode early so
288 * we don't get another interrupt
289 * when we leave mpi_worker dpc.
290 */
291 ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16));
292 queue_delayed_work(qdev->workqueue,
293 &qdev->mpi_port_cfg_work, 0);
294 }
295
296 ql_link_on(qdev);
297 }
298
ql_link_down(struct ql_adapter * qdev,struct mbox_params * mbcp)299 static void ql_link_down(struct ql_adapter *qdev, struct mbox_params *mbcp)
300 {
301 int status;
302
303 mbcp->out_count = 3;
304
305 status = ql_get_mb_sts(qdev, mbcp);
306 if (status)
307 netif_err(qdev, drv, qdev->ndev, "Link down AEN broken!\n");
308
309 ql_link_off(qdev);
310 }
311
ql_sfp_in(struct ql_adapter * qdev,struct mbox_params * mbcp)312 static int ql_sfp_in(struct ql_adapter *qdev, struct mbox_params *mbcp)
313 {
314 int status;
315
316 mbcp->out_count = 5;
317
318 status = ql_get_mb_sts(qdev, mbcp);
319 if (status)
320 netif_err(qdev, drv, qdev->ndev, "SFP in AEN broken!\n");
321 else
322 netif_err(qdev, drv, qdev->ndev, "SFP insertion detected.\n");
323
324 return status;
325 }
326
ql_sfp_out(struct ql_adapter * qdev,struct mbox_params * mbcp)327 static int ql_sfp_out(struct ql_adapter *qdev, struct mbox_params *mbcp)
328 {
329 int status;
330
331 mbcp->out_count = 1;
332
333 status = ql_get_mb_sts(qdev, mbcp);
334 if (status)
335 netif_err(qdev, drv, qdev->ndev, "SFP out AEN broken!\n");
336 else
337 netif_err(qdev, drv, qdev->ndev, "SFP removal detected.\n");
338
339 return status;
340 }
341
ql_aen_lost(struct ql_adapter * qdev,struct mbox_params * mbcp)342 static int ql_aen_lost(struct ql_adapter *qdev, struct mbox_params *mbcp)
343 {
344 int status;
345
346 mbcp->out_count = 6;
347
348 status = ql_get_mb_sts(qdev, mbcp);
349 if (status) {
350 netif_err(qdev, drv, qdev->ndev, "Lost AEN broken!\n");
351 } else {
352 int i;
353
354 netif_err(qdev, drv, qdev->ndev, "Lost AEN detected.\n");
355 for (i = 0; i < mbcp->out_count; i++)
356 netif_err(qdev, drv, qdev->ndev, "mbox_out[%d] = 0x%.08x.\n",
357 i, mbcp->mbox_out[i]);
358 }
359
360 return status;
361 }
362
ql_init_fw_done(struct ql_adapter * qdev,struct mbox_params * mbcp)363 static void ql_init_fw_done(struct ql_adapter *qdev, struct mbox_params *mbcp)
364 {
365 int status;
366
367 mbcp->out_count = 2;
368
369 status = ql_get_mb_sts(qdev, mbcp);
370 if (status) {
371 netif_err(qdev, drv, qdev->ndev, "Firmware did not initialize!\n");
372 } else {
373 netif_err(qdev, drv, qdev->ndev, "Firmware Revision = 0x%.08x.\n",
374 mbcp->mbox_out[1]);
375 qdev->fw_rev_id = mbcp->mbox_out[1];
376 status = ql_cam_route_initialize(qdev);
377 if (status)
378 netif_err(qdev, ifup, qdev->ndev,
379 "Failed to init CAM/Routing tables.\n");
380 }
381 }
382
383 /* Process an async event and clear it unless it's an
384 * error condition.
385 * This can get called iteratively from the mpi_work thread
386 * when events arrive via an interrupt.
387 * It also gets called when a mailbox command is polling for
388 * it's completion.
389 */
ql_mpi_handler(struct ql_adapter * qdev,struct mbox_params * mbcp)390 static int ql_mpi_handler(struct ql_adapter *qdev, struct mbox_params *mbcp)
391 {
392 int status;
393 int orig_count = mbcp->out_count;
394
395 /* Just get mailbox zero for now. */
396 mbcp->out_count = 1;
397 status = ql_get_mb_sts(qdev, mbcp);
398 if (status) {
399 netif_err(qdev, drv, qdev->ndev,
400 "Could not read MPI, resetting ASIC!\n");
401 ql_queue_asic_error(qdev);
402 goto end;
403 }
404
405 switch (mbcp->mbox_out[0]) {
406 /* This case is only active when we arrive here
407 * as a result of issuing a mailbox command to
408 * the firmware.
409 */
410 case MB_CMD_STS_INTRMDT:
411 case MB_CMD_STS_GOOD:
412 case MB_CMD_STS_INVLD_CMD:
413 case MB_CMD_STS_XFC_ERR:
414 case MB_CMD_STS_CSUM_ERR:
415 case MB_CMD_STS_ERR:
416 case MB_CMD_STS_PARAM_ERR:
417 /* We can only get mailbox status if we're polling from an
418 * unfinished command. Get the rest of the status data and
419 * return back to the caller.
420 * We only end up here when we're polling for a mailbox
421 * command completion.
422 */
423 mbcp->out_count = orig_count;
424 status = ql_get_mb_sts(qdev, mbcp);
425 return status;
426
427 /* We are being asked by firmware to accept
428 * a change to the port. This is only
429 * a change to max frame sizes (Tx/Rx), pause
430 * parameters, or loopback mode.
431 */
432 case AEN_IDC_REQ:
433 status = ql_idc_req_aen(qdev);
434 break;
435
436 /* Process and inbound IDC event.
437 * This will happen when we're trying to
438 * change tx/rx max frame size, change pause
439 * parameters or loopback mode.
440 */
441 case AEN_IDC_CMPLT:
442 case AEN_IDC_EXT:
443 status = ql_idc_cmplt_aen(qdev);
444 break;
445
446 case AEN_LINK_UP:
447 ql_link_up(qdev, mbcp);
448 break;
449
450 case AEN_LINK_DOWN:
451 ql_link_down(qdev, mbcp);
452 break;
453
454 case AEN_FW_INIT_DONE:
455 /* If we're in process on executing the firmware,
456 * then convert the status to normal mailbox status.
457 */
458 if (mbcp->mbox_in[0] == MB_CMD_EX_FW) {
459 mbcp->out_count = orig_count;
460 status = ql_get_mb_sts(qdev, mbcp);
461 mbcp->mbox_out[0] = MB_CMD_STS_GOOD;
462 return status;
463 }
464 ql_init_fw_done(qdev, mbcp);
465 break;
466
467 case AEN_AEN_SFP_IN:
468 ql_sfp_in(qdev, mbcp);
469 break;
470
471 case AEN_AEN_SFP_OUT:
472 ql_sfp_out(qdev, mbcp);
473 break;
474
475 /* This event can arrive at boot time or after an
476 * MPI reset if the firmware failed to initialize.
477 */
478 case AEN_FW_INIT_FAIL:
479 /* If we're in process on executing the firmware,
480 * then convert the status to normal mailbox status.
481 */
482 if (mbcp->mbox_in[0] == MB_CMD_EX_FW) {
483 mbcp->out_count = orig_count;
484 status = ql_get_mb_sts(qdev, mbcp);
485 mbcp->mbox_out[0] = MB_CMD_STS_ERR;
486 return status;
487 }
488 netif_err(qdev, drv, qdev->ndev,
489 "Firmware initialization failed.\n");
490 status = -EIO;
491 ql_queue_fw_error(qdev);
492 break;
493
494 case AEN_SYS_ERR:
495 netif_err(qdev, drv, qdev->ndev, "System Error.\n");
496 ql_queue_fw_error(qdev);
497 status = -EIO;
498 break;
499
500 case AEN_AEN_LOST:
501 ql_aen_lost(qdev, mbcp);
502 break;
503
504 case AEN_DCBX_CHG:
505 /* Need to support AEN 8110 */
506 break;
507 default:
508 netif_err(qdev, drv, qdev->ndev,
509 "Unsupported AE %.08x.\n", mbcp->mbox_out[0]);
510 /* Clear the MPI firmware status. */
511 }
512 end:
513 ql_write32(qdev, CSR, CSR_CMD_CLR_R2PCI_INT);
514 /* Restore the original mailbox count to
515 * what the caller asked for. This can get
516 * changed when a mailbox command is waiting
517 * for a response and an AEN arrives and
518 * is handled.
519 */
520 mbcp->out_count = orig_count;
521 return status;
522 }
523
524 /* Execute a single mailbox command.
525 * mbcp is a pointer to an array of u32. Each
526 * element in the array contains the value for it's
527 * respective mailbox register.
528 */
ql_mailbox_command(struct ql_adapter * qdev,struct mbox_params * mbcp)529 static int ql_mailbox_command(struct ql_adapter *qdev, struct mbox_params *mbcp)
530 {
531 int status;
532 unsigned long count;
533
534 mutex_lock(&qdev->mpi_mutex);
535
536 /* Begin polled mode for MPI */
537 ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16));
538
539 /* Load the mailbox registers and wake up MPI RISC. */
540 status = ql_exec_mb_cmd(qdev, mbcp);
541 if (status)
542 goto end;
543
544 /* If we're generating a system error, then there's nothing
545 * to wait for.
546 */
547 if (mbcp->mbox_in[0] == MB_CMD_MAKE_SYS_ERR)
548 goto end;
549
550 /* Wait for the command to complete. We loop
551 * here because some AEN might arrive while
552 * we're waiting for the mailbox command to
553 * complete. If more than 5 seconds expire we can
554 * assume something is wrong.
555 */
556 count = jiffies + HZ * MAILBOX_TIMEOUT;
557 do {
558 /* Wait for the interrupt to come in. */
559 status = ql_wait_mbx_cmd_cmplt(qdev);
560 if (status)
561 continue;
562
563 /* Process the event. If it's an AEN, it
564 * will be handled in-line or a worker
565 * will be spawned. If it's our completion
566 * we will catch it below.
567 */
568 status = ql_mpi_handler(qdev, mbcp);
569 if (status)
570 goto end;
571
572 /* It's either the completion for our mailbox
573 * command complete or an AEN. If it's our
574 * completion then get out.
575 */
576 if (((mbcp->mbox_out[0] & 0x0000f000) ==
577 MB_CMD_STS_GOOD) ||
578 ((mbcp->mbox_out[0] & 0x0000f000) ==
579 MB_CMD_STS_INTRMDT))
580 goto done;
581 } while (time_before(jiffies, count));
582
583 netif_err(qdev, drv, qdev->ndev,
584 "Timed out waiting for mailbox complete.\n");
585 status = -ETIMEDOUT;
586 goto end;
587
588 done:
589
590 /* Now we can clear the interrupt condition
591 * and look at our status.
592 */
593 ql_write32(qdev, CSR, CSR_CMD_CLR_R2PCI_INT);
594
595 if (((mbcp->mbox_out[0] & 0x0000f000) !=
596 MB_CMD_STS_GOOD) &&
597 ((mbcp->mbox_out[0] & 0x0000f000) !=
598 MB_CMD_STS_INTRMDT)) {
599 status = -EIO;
600 }
601 end:
602 /* End polled mode for MPI */
603 ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16) | INTR_MASK_PI);
604 mutex_unlock(&qdev->mpi_mutex);
605 return status;
606 }
607
608 /* Get MPI firmware version. This will be used for
609 * driver banner and for ethtool info.
610 * Returns zero on success.
611 */
ql_mb_about_fw(struct ql_adapter * qdev)612 int ql_mb_about_fw(struct ql_adapter *qdev)
613 {
614 struct mbox_params mbc;
615 struct mbox_params *mbcp = &mbc;
616 int status = 0;
617
618 memset(mbcp, 0, sizeof(struct mbox_params));
619
620 mbcp->in_count = 1;
621 mbcp->out_count = 3;
622
623 mbcp->mbox_in[0] = MB_CMD_ABOUT_FW;
624
625 status = ql_mailbox_command(qdev, mbcp);
626 if (status)
627 return status;
628
629 if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
630 netif_err(qdev, drv, qdev->ndev,
631 "Failed about firmware command\n");
632 status = -EIO;
633 }
634
635 /* Store the firmware version */
636 qdev->fw_rev_id = mbcp->mbox_out[1];
637
638 return status;
639 }
640
641 /* Get functional state for MPI firmware.
642 * Returns zero on success.
643 */
ql_mb_get_fw_state(struct ql_adapter * qdev)644 int ql_mb_get_fw_state(struct ql_adapter *qdev)
645 {
646 struct mbox_params mbc;
647 struct mbox_params *mbcp = &mbc;
648 int status = 0;
649
650 memset(mbcp, 0, sizeof(struct mbox_params));
651
652 mbcp->in_count = 1;
653 mbcp->out_count = 2;
654
655 mbcp->mbox_in[0] = MB_CMD_GET_FW_STATE;
656
657 status = ql_mailbox_command(qdev, mbcp);
658 if (status)
659 return status;
660
661 if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
662 netif_err(qdev, drv, qdev->ndev,
663 "Failed Get Firmware State.\n");
664 status = -EIO;
665 }
666
667 /* If bit zero is set in mbx 1 then the firmware is
668 * running, but not initialized. This should never
669 * happen.
670 */
671 if (mbcp->mbox_out[1] & 1) {
672 netif_err(qdev, drv, qdev->ndev,
673 "Firmware waiting for initialization.\n");
674 status = -EIO;
675 }
676
677 return status;
678 }
679
680 /* Send and ACK mailbox command to the firmware to
681 * let it continue with the change.
682 */
ql_mb_idc_ack(struct ql_adapter * qdev)683 static int ql_mb_idc_ack(struct ql_adapter *qdev)
684 {
685 struct mbox_params mbc;
686 struct mbox_params *mbcp = &mbc;
687 int status = 0;
688
689 memset(mbcp, 0, sizeof(struct mbox_params));
690
691 mbcp->in_count = 5;
692 mbcp->out_count = 1;
693
694 mbcp->mbox_in[0] = MB_CMD_IDC_ACK;
695 mbcp->mbox_in[1] = qdev->idc_mbc.mbox_out[1];
696 mbcp->mbox_in[2] = qdev->idc_mbc.mbox_out[2];
697 mbcp->mbox_in[3] = qdev->idc_mbc.mbox_out[3];
698 mbcp->mbox_in[4] = qdev->idc_mbc.mbox_out[4];
699
700 status = ql_mailbox_command(qdev, mbcp);
701 if (status)
702 return status;
703
704 if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
705 netif_err(qdev, drv, qdev->ndev, "Failed IDC ACK send.\n");
706 status = -EIO;
707 }
708 return status;
709 }
710
711 /* Get link settings and maximum frame size settings
712 * for the current port.
713 * Most likely will block.
714 */
ql_mb_set_port_cfg(struct ql_adapter * qdev)715 int ql_mb_set_port_cfg(struct ql_adapter *qdev)
716 {
717 struct mbox_params mbc;
718 struct mbox_params *mbcp = &mbc;
719 int status = 0;
720
721 memset(mbcp, 0, sizeof(struct mbox_params));
722
723 mbcp->in_count = 3;
724 mbcp->out_count = 1;
725
726 mbcp->mbox_in[0] = MB_CMD_SET_PORT_CFG;
727 mbcp->mbox_in[1] = qdev->link_config;
728 mbcp->mbox_in[2] = qdev->max_frame_size;
729
730 status = ql_mailbox_command(qdev, mbcp);
731 if (status)
732 return status;
733
734 if (mbcp->mbox_out[0] == MB_CMD_STS_INTRMDT) {
735 netif_err(qdev, drv, qdev->ndev,
736 "Port Config sent, wait for IDC.\n");
737 } else if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
738 netif_err(qdev, drv, qdev->ndev,
739 "Failed Set Port Configuration.\n");
740 status = -EIO;
741 }
742 return status;
743 }
744
ql_mb_dump_ram(struct ql_adapter * qdev,u64 req_dma,u32 addr,u32 size)745 static int ql_mb_dump_ram(struct ql_adapter *qdev, u64 req_dma, u32 addr,
746 u32 size)
747 {
748 int status = 0;
749 struct mbox_params mbc;
750 struct mbox_params *mbcp = &mbc;
751
752 memset(mbcp, 0, sizeof(struct mbox_params));
753
754 mbcp->in_count = 9;
755 mbcp->out_count = 1;
756
757 mbcp->mbox_in[0] = MB_CMD_DUMP_RISC_RAM;
758 mbcp->mbox_in[1] = LSW(addr);
759 mbcp->mbox_in[2] = MSW(req_dma);
760 mbcp->mbox_in[3] = LSW(req_dma);
761 mbcp->mbox_in[4] = MSW(size);
762 mbcp->mbox_in[5] = LSW(size);
763 mbcp->mbox_in[6] = MSW(MSD(req_dma));
764 mbcp->mbox_in[7] = LSW(MSD(req_dma));
765 mbcp->mbox_in[8] = MSW(addr);
766
767 status = ql_mailbox_command(qdev, mbcp);
768 if (status)
769 return status;
770
771 if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
772 netif_err(qdev, drv, qdev->ndev, "Failed to dump risc RAM.\n");
773 status = -EIO;
774 }
775 return status;
776 }
777
778 /* Issue a mailbox command to dump RISC RAM. */
ql_dump_risc_ram_area(struct ql_adapter * qdev,void * buf,u32 ram_addr,int word_count)779 int ql_dump_risc_ram_area(struct ql_adapter *qdev, void *buf,
780 u32 ram_addr, int word_count)
781 {
782 int status;
783 char *my_buf;
784 dma_addr_t buf_dma;
785
786 my_buf = dma_alloc_coherent(&qdev->pdev->dev,
787 word_count * sizeof(u32), &buf_dma,
788 GFP_ATOMIC);
789 if (!my_buf)
790 return -EIO;
791
792 status = ql_mb_dump_ram(qdev, buf_dma, ram_addr, word_count);
793 if (!status)
794 memcpy(buf, my_buf, word_count * sizeof(u32));
795
796 dma_free_coherent(&qdev->pdev->dev, word_count * sizeof(u32), my_buf,
797 buf_dma);
798 return status;
799 }
800
801 /* Get link settings and maximum frame size settings
802 * for the current port.
803 * Most likely will block.
804 */
ql_mb_get_port_cfg(struct ql_adapter * qdev)805 int ql_mb_get_port_cfg(struct ql_adapter *qdev)
806 {
807 struct mbox_params mbc;
808 struct mbox_params *mbcp = &mbc;
809 int status = 0;
810
811 memset(mbcp, 0, sizeof(struct mbox_params));
812
813 mbcp->in_count = 1;
814 mbcp->out_count = 3;
815
816 mbcp->mbox_in[0] = MB_CMD_GET_PORT_CFG;
817
818 status = ql_mailbox_command(qdev, mbcp);
819 if (status)
820 return status;
821
822 if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
823 netif_err(qdev, drv, qdev->ndev,
824 "Failed Get Port Configuration.\n");
825 status = -EIO;
826 } else {
827 netif_printk(qdev, drv, KERN_DEBUG, qdev->ndev,
828 "Passed Get Port Configuration.\n");
829 qdev->link_config = mbcp->mbox_out[1];
830 qdev->max_frame_size = mbcp->mbox_out[2];
831 }
832 return status;
833 }
834
ql_mb_wol_mode(struct ql_adapter * qdev,u32 wol)835 int ql_mb_wol_mode(struct ql_adapter *qdev, u32 wol)
836 {
837 struct mbox_params mbc;
838 struct mbox_params *mbcp = &mbc;
839 int status;
840
841 memset(mbcp, 0, sizeof(struct mbox_params));
842
843 mbcp->in_count = 2;
844 mbcp->out_count = 1;
845
846 mbcp->mbox_in[0] = MB_CMD_SET_WOL_MODE;
847 mbcp->mbox_in[1] = wol;
848
849 status = ql_mailbox_command(qdev, mbcp);
850 if (status)
851 return status;
852
853 if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
854 netif_err(qdev, drv, qdev->ndev, "Failed to set WOL mode.\n");
855 status = -EIO;
856 }
857 return status;
858 }
859
ql_mb_wol_set_magic(struct ql_adapter * qdev,u32 enable_wol)860 int ql_mb_wol_set_magic(struct ql_adapter *qdev, u32 enable_wol)
861 {
862 struct mbox_params mbc;
863 struct mbox_params *mbcp = &mbc;
864 int status;
865 u8 *addr = qdev->ndev->dev_addr;
866
867 memset(mbcp, 0, sizeof(struct mbox_params));
868
869 mbcp->in_count = 8;
870 mbcp->out_count = 1;
871
872 mbcp->mbox_in[0] = MB_CMD_SET_WOL_MAGIC;
873 if (enable_wol) {
874 mbcp->mbox_in[1] = (u32)addr[0];
875 mbcp->mbox_in[2] = (u32)addr[1];
876 mbcp->mbox_in[3] = (u32)addr[2];
877 mbcp->mbox_in[4] = (u32)addr[3];
878 mbcp->mbox_in[5] = (u32)addr[4];
879 mbcp->mbox_in[6] = (u32)addr[5];
880 mbcp->mbox_in[7] = 0;
881 } else {
882 mbcp->mbox_in[1] = 0;
883 mbcp->mbox_in[2] = 1;
884 mbcp->mbox_in[3] = 1;
885 mbcp->mbox_in[4] = 1;
886 mbcp->mbox_in[5] = 1;
887 mbcp->mbox_in[6] = 1;
888 mbcp->mbox_in[7] = 0;
889 }
890
891 status = ql_mailbox_command(qdev, mbcp);
892 if (status)
893 return status;
894
895 if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
896 netif_err(qdev, drv, qdev->ndev, "Failed to set WOL mode.\n");
897 status = -EIO;
898 }
899 return status;
900 }
901
902 /* IDC - Inter Device Communication...
903 * Some firmware commands require consent of adjacent FCOE
904 * function. This function waits for the OK, or a
905 * counter-request for a little more time.i
906 * The firmware will complete the request if the other
907 * function doesn't respond.
908 */
ql_idc_wait(struct ql_adapter * qdev)909 static int ql_idc_wait(struct ql_adapter *qdev)
910 {
911 int status = -ETIMEDOUT;
912 struct mbox_params *mbcp = &qdev->idc_mbc;
913 long wait_time;
914
915 for (wait_time = 1 * HZ; wait_time;) {
916 /* Wait here for the command to complete
917 * via the IDC process.
918 */
919 wait_time =
920 wait_for_completion_timeout(&qdev->ide_completion,
921 wait_time);
922 if (!wait_time) {
923 netif_err(qdev, drv, qdev->ndev, "IDC Timeout.\n");
924 break;
925 }
926 /* Now examine the response from the IDC process.
927 * We might have a good completion or a request for
928 * more wait time.
929 */
930 if (mbcp->mbox_out[0] == AEN_IDC_EXT) {
931 netif_err(qdev, drv, qdev->ndev,
932 "IDC Time Extension from function.\n");
933 wait_time += (mbcp->mbox_out[1] >> 8) & 0x0000000f;
934 } else if (mbcp->mbox_out[0] == AEN_IDC_CMPLT) {
935 netif_err(qdev, drv, qdev->ndev, "IDC Success.\n");
936 status = 0;
937 break;
938 } else {
939 netif_err(qdev, drv, qdev->ndev,
940 "IDC: Invalid State 0x%.04x.\n",
941 mbcp->mbox_out[0]);
942 status = -EIO;
943 break;
944 }
945 }
946
947 return status;
948 }
949
ql_mb_set_led_cfg(struct ql_adapter * qdev,u32 led_config)950 int ql_mb_set_led_cfg(struct ql_adapter *qdev, u32 led_config)
951 {
952 struct mbox_params mbc;
953 struct mbox_params *mbcp = &mbc;
954 int status;
955
956 memset(mbcp, 0, sizeof(struct mbox_params));
957
958 mbcp->in_count = 2;
959 mbcp->out_count = 1;
960
961 mbcp->mbox_in[0] = MB_CMD_SET_LED_CFG;
962 mbcp->mbox_in[1] = led_config;
963
964 status = ql_mailbox_command(qdev, mbcp);
965 if (status)
966 return status;
967
968 if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
969 netif_err(qdev, drv, qdev->ndev,
970 "Failed to set LED Configuration.\n");
971 status = -EIO;
972 }
973
974 return status;
975 }
976
ql_mb_get_led_cfg(struct ql_adapter * qdev)977 int ql_mb_get_led_cfg(struct ql_adapter *qdev)
978 {
979 struct mbox_params mbc;
980 struct mbox_params *mbcp = &mbc;
981 int status;
982
983 memset(mbcp, 0, sizeof(struct mbox_params));
984
985 mbcp->in_count = 1;
986 mbcp->out_count = 2;
987
988 mbcp->mbox_in[0] = MB_CMD_GET_LED_CFG;
989
990 status = ql_mailbox_command(qdev, mbcp);
991 if (status)
992 return status;
993
994 if (mbcp->mbox_out[0] != MB_CMD_STS_GOOD) {
995 netif_err(qdev, drv, qdev->ndev,
996 "Failed to get LED Configuration.\n");
997 status = -EIO;
998 } else {
999 qdev->led_config = mbcp->mbox_out[1];
1000 }
1001 return status;
1002 }
1003
ql_mb_set_mgmnt_traffic_ctl(struct ql_adapter * qdev,u32 control)1004 int ql_mb_set_mgmnt_traffic_ctl(struct ql_adapter *qdev, u32 control)
1005 {
1006 struct mbox_params mbc;
1007 struct mbox_params *mbcp = &mbc;
1008 int status;
1009
1010 memset(mbcp, 0, sizeof(struct mbox_params));
1011
1012 mbcp->in_count = 1;
1013 mbcp->out_count = 2;
1014
1015 mbcp->mbox_in[0] = MB_CMD_SET_MGMNT_TFK_CTL;
1016 mbcp->mbox_in[1] = control;
1017
1018 status = ql_mailbox_command(qdev, mbcp);
1019 if (status)
1020 return status;
1021
1022 if (mbcp->mbox_out[0] == MB_CMD_STS_GOOD)
1023 return status;
1024
1025 if (mbcp->mbox_out[0] == MB_CMD_STS_INVLD_CMD) {
1026 netif_err(qdev, drv, qdev->ndev,
1027 "Command not supported by firmware.\n");
1028 status = -EINVAL;
1029 } else if (mbcp->mbox_out[0] == MB_CMD_STS_ERR) {
1030 /* This indicates that the firmware is
1031 * already in the state we are trying to
1032 * change it to.
1033 */
1034 netif_err(qdev, drv, qdev->ndev,
1035 "Command parameters make no change.\n");
1036 }
1037 return status;
1038 }
1039
1040 /* Returns a negative error code or the mailbox command status. */
ql_mb_get_mgmnt_traffic_ctl(struct ql_adapter * qdev,u32 * control)1041 static int ql_mb_get_mgmnt_traffic_ctl(struct ql_adapter *qdev, u32 *control)
1042 {
1043 struct mbox_params mbc;
1044 struct mbox_params *mbcp = &mbc;
1045 int status;
1046
1047 memset(mbcp, 0, sizeof(struct mbox_params));
1048 *control = 0;
1049
1050 mbcp->in_count = 1;
1051 mbcp->out_count = 1;
1052
1053 mbcp->mbox_in[0] = MB_CMD_GET_MGMNT_TFK_CTL;
1054
1055 status = ql_mailbox_command(qdev, mbcp);
1056 if (status)
1057 return status;
1058
1059 if (mbcp->mbox_out[0] == MB_CMD_STS_GOOD) {
1060 *control = mbcp->mbox_in[1];
1061 return status;
1062 }
1063
1064 if (mbcp->mbox_out[0] == MB_CMD_STS_INVLD_CMD) {
1065 netif_err(qdev, drv, qdev->ndev,
1066 "Command not supported by firmware.\n");
1067 status = -EINVAL;
1068 } else if (mbcp->mbox_out[0] == MB_CMD_STS_ERR) {
1069 netif_err(qdev, drv, qdev->ndev,
1070 "Failed to get MPI traffic control.\n");
1071 status = -EIO;
1072 }
1073 return status;
1074 }
1075
ql_wait_fifo_empty(struct ql_adapter * qdev)1076 int ql_wait_fifo_empty(struct ql_adapter *qdev)
1077 {
1078 int count;
1079 u32 mgmnt_fifo_empty;
1080 u32 nic_fifo_empty;
1081
1082 for (count = 6; count; count--) {
1083 nic_fifo_empty = ql_read32(qdev, STS) & STS_NFE;
1084 ql_mb_get_mgmnt_traffic_ctl(qdev, &mgmnt_fifo_empty);
1085 mgmnt_fifo_empty &= MB_GET_MPI_TFK_FIFO_EMPTY;
1086 if (nic_fifo_empty && mgmnt_fifo_empty)
1087 return 0;
1088 msleep(100);
1089 }
1090 return -ETIMEDOUT;
1091 }
1092
1093 /* API called in work thread context to set new TX/RX
1094 * maximum frame size values to match MTU.
1095 */
ql_set_port_cfg(struct ql_adapter * qdev)1096 static int ql_set_port_cfg(struct ql_adapter *qdev)
1097 {
1098 int status;
1099
1100 status = ql_mb_set_port_cfg(qdev);
1101 if (status)
1102 return status;
1103 status = ql_idc_wait(qdev);
1104 return status;
1105 }
1106
1107 /* The following routines are worker threads that process
1108 * events that may sleep waiting for completion.
1109 */
1110
1111 /* This thread gets the maximum TX and RX frame size values
1112 * from the firmware and, if necessary, changes them to match
1113 * the MTU setting.
1114 */
ql_mpi_port_cfg_work(struct work_struct * work)1115 void ql_mpi_port_cfg_work(struct work_struct *work)
1116 {
1117 struct ql_adapter *qdev =
1118 container_of(work, struct ql_adapter, mpi_port_cfg_work.work);
1119 int status;
1120
1121 status = ql_mb_get_port_cfg(qdev);
1122 if (status) {
1123 netif_err(qdev, drv, qdev->ndev,
1124 "Bug: Failed to get port config data.\n");
1125 goto err;
1126 }
1127
1128 if (qdev->link_config & CFG_JUMBO_FRAME_SIZE &&
1129 qdev->max_frame_size == CFG_DEFAULT_MAX_FRAME_SIZE)
1130 goto end;
1131
1132 qdev->link_config |= CFG_JUMBO_FRAME_SIZE;
1133 qdev->max_frame_size = CFG_DEFAULT_MAX_FRAME_SIZE;
1134 status = ql_set_port_cfg(qdev);
1135 if (status) {
1136 netif_err(qdev, drv, qdev->ndev,
1137 "Bug: Failed to set port config data.\n");
1138 goto err;
1139 }
1140 end:
1141 clear_bit(QL_PORT_CFG, &qdev->flags);
1142 return;
1143 err:
1144 ql_queue_fw_error(qdev);
1145 goto end;
1146 }
1147
1148 /* Process an inter-device request. This is issues by
1149 * the firmware in response to another function requesting
1150 * a change to the port. We set a flag to indicate a change
1151 * has been made and then send a mailbox command ACKing
1152 * the change request.
1153 */
ql_mpi_idc_work(struct work_struct * work)1154 void ql_mpi_idc_work(struct work_struct *work)
1155 {
1156 struct ql_adapter *qdev =
1157 container_of(work, struct ql_adapter, mpi_idc_work.work);
1158 int status;
1159 struct mbox_params *mbcp = &qdev->idc_mbc;
1160 u32 aen;
1161 int timeout;
1162
1163 aen = mbcp->mbox_out[1] >> 16;
1164 timeout = (mbcp->mbox_out[1] >> 8) & 0xf;
1165
1166 switch (aen) {
1167 default:
1168 netif_err(qdev, drv, qdev->ndev,
1169 "Bug: Unhandled IDC action.\n");
1170 break;
1171 case MB_CMD_PORT_RESET:
1172 case MB_CMD_STOP_FW:
1173 ql_link_off(qdev);
1174 fallthrough;
1175 case MB_CMD_SET_PORT_CFG:
1176 /* Signal the resulting link up AEN
1177 * that the frame routing and mac addr
1178 * needs to be set.
1179 */
1180 set_bit(QL_CAM_RT_SET, &qdev->flags);
1181 /* Do ACK if required */
1182 if (timeout) {
1183 status = ql_mb_idc_ack(qdev);
1184 if (status)
1185 netif_err(qdev, drv, qdev->ndev,
1186 "Bug: No pending IDC!\n");
1187 } else {
1188 netif_printk(qdev, drv, KERN_DEBUG, qdev->ndev,
1189 "IDC ACK not required\n");
1190 status = 0; /* success */
1191 }
1192 break;
1193
1194 /* These sub-commands issued by another (FCoE)
1195 * function are requesting to do an operation
1196 * on the shared resource (MPI environment).
1197 * We currently don't issue these so we just
1198 * ACK the request.
1199 */
1200 case MB_CMD_IOP_RESTART_MPI:
1201 case MB_CMD_IOP_PREP_LINK_DOWN:
1202 /* Drop the link, reload the routing
1203 * table when link comes up.
1204 */
1205 ql_link_off(qdev);
1206 set_bit(QL_CAM_RT_SET, &qdev->flags);
1207 fallthrough;
1208 case MB_CMD_IOP_DVR_START:
1209 case MB_CMD_IOP_FLASH_ACC:
1210 case MB_CMD_IOP_CORE_DUMP_MPI:
1211 case MB_CMD_IOP_PREP_UPDATE_MPI:
1212 case MB_CMD_IOP_COMP_UPDATE_MPI:
1213 case MB_CMD_IOP_NONE: /* an IDC without params */
1214 /* Do ACK if required */
1215 if (timeout) {
1216 status = ql_mb_idc_ack(qdev);
1217 if (status)
1218 netif_err(qdev, drv, qdev->ndev,
1219 "Bug: No pending IDC!\n");
1220 } else {
1221 netif_printk(qdev, drv, KERN_DEBUG, qdev->ndev,
1222 "IDC ACK not required\n");
1223 status = 0; /* success */
1224 }
1225 break;
1226 }
1227 }
1228
ql_mpi_work(struct work_struct * work)1229 void ql_mpi_work(struct work_struct *work)
1230 {
1231 struct ql_adapter *qdev =
1232 container_of(work, struct ql_adapter, mpi_work.work);
1233 struct mbox_params mbc;
1234 struct mbox_params *mbcp = &mbc;
1235 int err = 0;
1236
1237 mutex_lock(&qdev->mpi_mutex);
1238 /* Begin polled mode for MPI */
1239 ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16));
1240
1241 while (ql_read32(qdev, STS) & STS_PI) {
1242 memset(mbcp, 0, sizeof(struct mbox_params));
1243 mbcp->out_count = 1;
1244 /* Don't continue if an async event
1245 * did not complete properly.
1246 */
1247 err = ql_mpi_handler(qdev, mbcp);
1248 if (err)
1249 break;
1250 }
1251
1252 /* End polled mode for MPI */
1253 ql_write32(qdev, INTR_MASK, (INTR_MASK_PI << 16) | INTR_MASK_PI);
1254 mutex_unlock(&qdev->mpi_mutex);
1255 }
1256
ql_mpi_reset_work(struct work_struct * work)1257 void ql_mpi_reset_work(struct work_struct *work)
1258 {
1259 struct ql_adapter *qdev =
1260 container_of(work, struct ql_adapter, mpi_reset_work.work);
1261 cancel_delayed_work_sync(&qdev->mpi_work);
1262 cancel_delayed_work_sync(&qdev->mpi_port_cfg_work);
1263 cancel_delayed_work_sync(&qdev->mpi_idc_work);
1264 /* If we're not the dominant NIC function,
1265 * then there is nothing to do.
1266 */
1267 if (!ql_own_firmware(qdev)) {
1268 netif_err(qdev, drv, qdev->ndev, "Don't own firmware!\n");
1269 return;
1270 }
1271
1272 if (qdev->mpi_coredump && !ql_core_dump(qdev, qdev->mpi_coredump)) {
1273 netif_err(qdev, drv, qdev->ndev, "Core is dumped!\n");
1274 qdev->core_is_dumped = 1;
1275 queue_delayed_work(qdev->workqueue,
1276 &qdev->mpi_core_to_log, 5 * HZ);
1277 }
1278 ql_soft_reset_mpi_risc(qdev);
1279 }
1280