1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2017 - 2019 Pensando Systems, Inc */
3
4 #include <linux/printk.h>
5 #include <linux/dynamic_debug.h>
6 #include <linux/module.h>
7 #include <linux/netdevice.h>
8 #include <linux/utsname.h>
9 #include <generated/utsrelease.h>
10 #include <linux/ctype.h>
11
12 #include "ionic.h"
13 #include "ionic_bus.h"
14 #include "ionic_lif.h"
15 #include "ionic_debugfs.h"
16
17 MODULE_DESCRIPTION(IONIC_DRV_DESCRIPTION);
18 MODULE_AUTHOR("Shannon Nelson <[email protected]>");
19 MODULE_LICENSE("GPL");
20
ionic_error_to_str(enum ionic_status_code code)21 static const char *ionic_error_to_str(enum ionic_status_code code)
22 {
23 switch (code) {
24 case IONIC_RC_SUCCESS:
25 return "IONIC_RC_SUCCESS";
26 case IONIC_RC_EVERSION:
27 return "IONIC_RC_EVERSION";
28 case IONIC_RC_EOPCODE:
29 return "IONIC_RC_EOPCODE";
30 case IONIC_RC_EIO:
31 return "IONIC_RC_EIO";
32 case IONIC_RC_EPERM:
33 return "IONIC_RC_EPERM";
34 case IONIC_RC_EQID:
35 return "IONIC_RC_EQID";
36 case IONIC_RC_EQTYPE:
37 return "IONIC_RC_EQTYPE";
38 case IONIC_RC_ENOENT:
39 return "IONIC_RC_ENOENT";
40 case IONIC_RC_EINTR:
41 return "IONIC_RC_EINTR";
42 case IONIC_RC_EAGAIN:
43 return "IONIC_RC_EAGAIN";
44 case IONIC_RC_ENOMEM:
45 return "IONIC_RC_ENOMEM";
46 case IONIC_RC_EFAULT:
47 return "IONIC_RC_EFAULT";
48 case IONIC_RC_EBUSY:
49 return "IONIC_RC_EBUSY";
50 case IONIC_RC_EEXIST:
51 return "IONIC_RC_EEXIST";
52 case IONIC_RC_EINVAL:
53 return "IONIC_RC_EINVAL";
54 case IONIC_RC_ENOSPC:
55 return "IONIC_RC_ENOSPC";
56 case IONIC_RC_ERANGE:
57 return "IONIC_RC_ERANGE";
58 case IONIC_RC_BAD_ADDR:
59 return "IONIC_RC_BAD_ADDR";
60 case IONIC_RC_DEV_CMD:
61 return "IONIC_RC_DEV_CMD";
62 case IONIC_RC_ENOSUPP:
63 return "IONIC_RC_ENOSUPP";
64 case IONIC_RC_ERROR:
65 return "IONIC_RC_ERROR";
66 case IONIC_RC_ERDMA:
67 return "IONIC_RC_ERDMA";
68 case IONIC_RC_EBAD_FW:
69 return "IONIC_RC_EBAD_FW";
70 default:
71 return "IONIC_RC_UNKNOWN";
72 }
73 }
74
ionic_error_to_errno(enum ionic_status_code code)75 static int ionic_error_to_errno(enum ionic_status_code code)
76 {
77 switch (code) {
78 case IONIC_RC_SUCCESS:
79 return 0;
80 case IONIC_RC_EVERSION:
81 case IONIC_RC_EQTYPE:
82 case IONIC_RC_EQID:
83 case IONIC_RC_EINVAL:
84 return -EINVAL;
85 case IONIC_RC_ENOSUPP:
86 return -EOPNOTSUPP;
87 case IONIC_RC_EPERM:
88 return -EPERM;
89 case IONIC_RC_ENOENT:
90 return -ENOENT;
91 case IONIC_RC_EAGAIN:
92 return -EAGAIN;
93 case IONIC_RC_ENOMEM:
94 return -ENOMEM;
95 case IONIC_RC_EFAULT:
96 return -EFAULT;
97 case IONIC_RC_EBUSY:
98 return -EBUSY;
99 case IONIC_RC_EEXIST:
100 return -EEXIST;
101 case IONIC_RC_ENOSPC:
102 return -ENOSPC;
103 case IONIC_RC_ERANGE:
104 return -ERANGE;
105 case IONIC_RC_BAD_ADDR:
106 return -EFAULT;
107 case IONIC_RC_EOPCODE:
108 case IONIC_RC_EINTR:
109 case IONIC_RC_DEV_CMD:
110 case IONIC_RC_ERROR:
111 case IONIC_RC_ERDMA:
112 case IONIC_RC_EIO:
113 default:
114 return -EIO;
115 }
116 }
117
ionic_opcode_to_str(enum ionic_cmd_opcode opcode)118 static const char *ionic_opcode_to_str(enum ionic_cmd_opcode opcode)
119 {
120 switch (opcode) {
121 case IONIC_CMD_NOP:
122 return "IONIC_CMD_NOP";
123 case IONIC_CMD_INIT:
124 return "IONIC_CMD_INIT";
125 case IONIC_CMD_RESET:
126 return "IONIC_CMD_RESET";
127 case IONIC_CMD_IDENTIFY:
128 return "IONIC_CMD_IDENTIFY";
129 case IONIC_CMD_GETATTR:
130 return "IONIC_CMD_GETATTR";
131 case IONIC_CMD_SETATTR:
132 return "IONIC_CMD_SETATTR";
133 case IONIC_CMD_PORT_IDENTIFY:
134 return "IONIC_CMD_PORT_IDENTIFY";
135 case IONIC_CMD_PORT_INIT:
136 return "IONIC_CMD_PORT_INIT";
137 case IONIC_CMD_PORT_RESET:
138 return "IONIC_CMD_PORT_RESET";
139 case IONIC_CMD_PORT_GETATTR:
140 return "IONIC_CMD_PORT_GETATTR";
141 case IONIC_CMD_PORT_SETATTR:
142 return "IONIC_CMD_PORT_SETATTR";
143 case IONIC_CMD_LIF_INIT:
144 return "IONIC_CMD_LIF_INIT";
145 case IONIC_CMD_LIF_RESET:
146 return "IONIC_CMD_LIF_RESET";
147 case IONIC_CMD_LIF_IDENTIFY:
148 return "IONIC_CMD_LIF_IDENTIFY";
149 case IONIC_CMD_LIF_SETATTR:
150 return "IONIC_CMD_LIF_SETATTR";
151 case IONIC_CMD_LIF_GETATTR:
152 return "IONIC_CMD_LIF_GETATTR";
153 case IONIC_CMD_LIF_SETPHC:
154 return "IONIC_CMD_LIF_SETPHC";
155 case IONIC_CMD_RX_MODE_SET:
156 return "IONIC_CMD_RX_MODE_SET";
157 case IONIC_CMD_RX_FILTER_ADD:
158 return "IONIC_CMD_RX_FILTER_ADD";
159 case IONIC_CMD_RX_FILTER_DEL:
160 return "IONIC_CMD_RX_FILTER_DEL";
161 case IONIC_CMD_Q_IDENTIFY:
162 return "IONIC_CMD_Q_IDENTIFY";
163 case IONIC_CMD_Q_INIT:
164 return "IONIC_CMD_Q_INIT";
165 case IONIC_CMD_Q_CONTROL:
166 return "IONIC_CMD_Q_CONTROL";
167 case IONIC_CMD_RDMA_RESET_LIF:
168 return "IONIC_CMD_RDMA_RESET_LIF";
169 case IONIC_CMD_RDMA_CREATE_EQ:
170 return "IONIC_CMD_RDMA_CREATE_EQ";
171 case IONIC_CMD_RDMA_CREATE_CQ:
172 return "IONIC_CMD_RDMA_CREATE_CQ";
173 case IONIC_CMD_RDMA_CREATE_ADMINQ:
174 return "IONIC_CMD_RDMA_CREATE_ADMINQ";
175 case IONIC_CMD_FW_DOWNLOAD:
176 return "IONIC_CMD_FW_DOWNLOAD";
177 case IONIC_CMD_FW_CONTROL:
178 return "IONIC_CMD_FW_CONTROL";
179 case IONIC_CMD_FW_DOWNLOAD_V1:
180 return "IONIC_CMD_FW_DOWNLOAD_V1";
181 case IONIC_CMD_FW_CONTROL_V1:
182 return "IONIC_CMD_FW_CONTROL_V1";
183 case IONIC_CMD_VF_GETATTR:
184 return "IONIC_CMD_VF_GETATTR";
185 case IONIC_CMD_VF_SETATTR:
186 return "IONIC_CMD_VF_SETATTR";
187 default:
188 return "DEVCMD_UNKNOWN";
189 }
190 }
191
ionic_adminq_flush(struct ionic_lif * lif)192 static void ionic_adminq_flush(struct ionic_lif *lif)
193 {
194 struct ionic_admin_desc_info *desc_info;
195 struct ionic_admin_cmd *desc;
196 unsigned long irqflags;
197 struct ionic_queue *q;
198
199 spin_lock_irqsave(&lif->adminq_lock, irqflags);
200 if (!lif->adminqcq) {
201 spin_unlock_irqrestore(&lif->adminq_lock, irqflags);
202 return;
203 }
204
205 q = &lif->adminqcq->q;
206
207 while (q->tail_idx != q->head_idx) {
208 desc = &q->adminq[q->tail_idx];
209 desc_info = &q->admin_info[q->tail_idx];
210 memset(desc, 0, sizeof(union ionic_adminq_cmd));
211 desc_info->ctx = NULL;
212 q->tail_idx = (q->tail_idx + 1) & (q->num_descs - 1);
213 }
214 spin_unlock_irqrestore(&lif->adminq_lock, irqflags);
215 }
216
ionic_adminq_netdev_err_print(struct ionic_lif * lif,u8 opcode,u8 status,int err)217 void ionic_adminq_netdev_err_print(struct ionic_lif *lif, u8 opcode,
218 u8 status, int err)
219 {
220 const char *stat_str;
221
222 stat_str = (err == -ETIMEDOUT) ? "TIMEOUT" :
223 ionic_error_to_str(status);
224
225 netdev_err(lif->netdev, "%s (%d) failed: %s (%d)\n",
226 ionic_opcode_to_str(opcode), opcode, stat_str, err);
227 }
228
ionic_adminq_check_err(struct ionic_lif * lif,struct ionic_admin_ctx * ctx,const bool timeout,const bool do_msg)229 static int ionic_adminq_check_err(struct ionic_lif *lif,
230 struct ionic_admin_ctx *ctx,
231 const bool timeout,
232 const bool do_msg)
233 {
234 int err = 0;
235
236 if (ctx->comp.comp.status || timeout) {
237 err = timeout ? -ETIMEDOUT :
238 ionic_error_to_errno(ctx->comp.comp.status);
239
240 if (do_msg)
241 ionic_adminq_netdev_err_print(lif, ctx->cmd.cmd.opcode,
242 ctx->comp.comp.status, err);
243
244 if (timeout)
245 ionic_adminq_flush(lif);
246 }
247
248 return err;
249 }
250
ionic_notifyq_service(struct ionic_cq * cq)251 bool ionic_notifyq_service(struct ionic_cq *cq)
252 {
253 struct ionic_deferred_work *work;
254 union ionic_notifyq_comp *comp;
255 struct net_device *netdev;
256 struct ionic_queue *q;
257 struct ionic_lif *lif;
258 u64 eid;
259
260 comp = &((union ionic_notifyq_comp *)cq->base)[cq->tail_idx];
261
262 q = cq->bound_q;
263 lif = q->admin_info[0].ctx;
264 netdev = lif->netdev;
265 eid = le64_to_cpu(comp->event.eid);
266
267 /* Have we run out of new completions to process? */
268 if ((s64)(eid - lif->last_eid) <= 0)
269 return false;
270
271 lif->last_eid = eid;
272
273 dev_dbg(lif->ionic->dev, "notifyq event:\n");
274 dynamic_hex_dump("event ", DUMP_PREFIX_OFFSET, 16, 1,
275 comp, sizeof(*comp), true);
276
277 switch (le16_to_cpu(comp->event.ecode)) {
278 case IONIC_EVENT_LINK_CHANGE:
279 ionic_link_status_check_request(lif, CAN_NOT_SLEEP);
280 break;
281 case IONIC_EVENT_RESET:
282 if (lif->ionic->idev.fw_status_ready &&
283 !test_bit(IONIC_LIF_F_FW_RESET, lif->state) &&
284 !test_and_set_bit(IONIC_LIF_F_FW_STOPPING, lif->state)) {
285 work = kzalloc(sizeof(*work), GFP_ATOMIC);
286 if (!work) {
287 netdev_err(lif->netdev, "Reset event dropped\n");
288 clear_bit(IONIC_LIF_F_FW_STOPPING, lif->state);
289 } else {
290 work->type = IONIC_DW_TYPE_LIF_RESET;
291 ionic_lif_deferred_enqueue(lif, work);
292 }
293 }
294 break;
295 default:
296 netdev_warn(netdev, "Notifyq event ecode=%d eid=%lld\n",
297 comp->event.ecode, eid);
298 break;
299 }
300
301 return true;
302 }
303
ionic_adminq_service(struct ionic_cq * cq)304 bool ionic_adminq_service(struct ionic_cq *cq)
305 {
306 struct ionic_admin_desc_info *desc_info;
307 struct ionic_queue *q = cq->bound_q;
308 struct ionic_admin_comp *comp;
309 u16 index;
310
311 comp = &((struct ionic_admin_comp *)cq->base)[cq->tail_idx];
312
313 if (!color_match(comp->color, cq->done_color))
314 return false;
315
316 /* check for empty queue */
317 if (q->tail_idx == q->head_idx)
318 return false;
319
320 do {
321 desc_info = &q->admin_info[q->tail_idx];
322 index = q->tail_idx;
323 q->tail_idx = (q->tail_idx + 1) & (q->num_descs - 1);
324 if (likely(desc_info->ctx)) {
325 struct ionic_admin_ctx *ctx = desc_info->ctx;
326
327 memcpy(&ctx->comp, comp, sizeof(*comp));
328
329 dev_dbg(q->dev, "comp admin queue command:\n");
330 dynamic_hex_dump("comp ", DUMP_PREFIX_OFFSET, 16, 1,
331 &ctx->comp, sizeof(ctx->comp), true);
332 complete_all(&ctx->work);
333 desc_info->ctx = NULL;
334 }
335 } while (index != le16_to_cpu(comp->comp_index));
336
337 return true;
338 }
339
ionic_adminq_poke_doorbell(struct ionic_queue * q)340 bool ionic_adminq_poke_doorbell(struct ionic_queue *q)
341 {
342 struct ionic_lif *lif = q->lif;
343 unsigned long now, then, dif;
344 unsigned long irqflags;
345
346 spin_lock_irqsave(&lif->adminq_lock, irqflags);
347
348 if (q->tail_idx == q->head_idx) {
349 spin_unlock_irqrestore(&lif->adminq_lock, irqflags);
350 return false;
351 }
352
353 now = READ_ONCE(jiffies);
354 then = q->dbell_jiffies;
355 dif = now - then;
356
357 if (dif > q->dbell_deadline) {
358 ionic_dbell_ring(q->lif->kern_dbpage, q->hw_type,
359 q->dbval | q->head_idx);
360
361 q->dbell_jiffies = now;
362 }
363
364 spin_unlock_irqrestore(&lif->adminq_lock, irqflags);
365
366 return true;
367 }
368
ionic_adminq_post(struct ionic_lif * lif,struct ionic_admin_ctx * ctx)369 int ionic_adminq_post(struct ionic_lif *lif, struct ionic_admin_ctx *ctx)
370 {
371 struct ionic_admin_desc_info *desc_info;
372 struct ionic_admin_cmd *desc;
373 unsigned long irqflags;
374 struct ionic_queue *q;
375 int err = 0;
376
377 spin_lock_irqsave(&lif->adminq_lock, irqflags);
378 if (!lif->adminqcq) {
379 spin_unlock_irqrestore(&lif->adminq_lock, irqflags);
380 return -EIO;
381 }
382
383 q = &lif->adminqcq->q;
384
385 if (!ionic_q_has_space(q, 1)) {
386 err = -ENOSPC;
387 goto err_out;
388 }
389
390 err = ionic_heartbeat_check(lif->ionic);
391 if (err)
392 goto err_out;
393
394 desc_info = &q->admin_info[q->head_idx];
395 desc_info->ctx = ctx;
396
397 desc = &q->adminq[q->head_idx];
398 memcpy(desc, &ctx->cmd, sizeof(ctx->cmd));
399
400 dev_dbg(&lif->netdev->dev, "post admin queue command:\n");
401 dynamic_hex_dump("cmd ", DUMP_PREFIX_OFFSET, 16, 1,
402 &ctx->cmd, sizeof(ctx->cmd), true);
403
404 ionic_q_post(q, true);
405
406 err_out:
407 spin_unlock_irqrestore(&lif->adminq_lock, irqflags);
408
409 return err;
410 }
411
ionic_adminq_wait(struct ionic_lif * lif,struct ionic_admin_ctx * ctx,const int err,const bool do_msg)412 int ionic_adminq_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx,
413 const int err, const bool do_msg)
414 {
415 struct net_device *netdev = lif->netdev;
416 unsigned long time_limit;
417 unsigned long time_start;
418 unsigned long time_done;
419 unsigned long remaining;
420 const char *name;
421
422 name = ionic_opcode_to_str(ctx->cmd.cmd.opcode);
423
424 if (err) {
425 if (do_msg && !test_bit(IONIC_LIF_F_FW_RESET, lif->state))
426 netdev_err(netdev, "Posting of %s (%d) failed: %d\n",
427 name, ctx->cmd.cmd.opcode, err);
428 ctx->comp.comp.status = IONIC_RC_ERROR;
429 return err;
430 }
431
432 time_start = jiffies;
433 time_limit = time_start + HZ * (ulong)DEVCMD_TIMEOUT;
434 do {
435 remaining = wait_for_completion_timeout(&ctx->work,
436 IONIC_ADMINQ_TIME_SLICE);
437
438 /* check for done */
439 if (remaining)
440 break;
441
442 /* force a check of FW status and break out if FW reset */
443 ionic_heartbeat_check(lif->ionic);
444 if ((test_bit(IONIC_LIF_F_FW_RESET, lif->state) &&
445 !lif->ionic->idev.fw_status_ready) ||
446 test_bit(IONIC_LIF_F_FW_STOPPING, lif->state)) {
447 if (do_msg)
448 netdev_warn(netdev, "%s (%d) interrupted, FW in reset\n",
449 name, ctx->cmd.cmd.opcode);
450 ctx->comp.comp.status = IONIC_RC_ERROR;
451 return -ENXIO;
452 }
453
454 } while (time_before(jiffies, time_limit));
455 time_done = jiffies;
456
457 dev_dbg(lif->ionic->dev, "%s: elapsed %d msecs\n",
458 __func__, jiffies_to_msecs(time_done - time_start));
459
460 return ionic_adminq_check_err(lif, ctx,
461 time_after_eq(time_done, time_limit),
462 do_msg);
463 }
464
__ionic_adminq_post_wait(struct ionic_lif * lif,struct ionic_admin_ctx * ctx,const bool do_msg)465 static int __ionic_adminq_post_wait(struct ionic_lif *lif,
466 struct ionic_admin_ctx *ctx,
467 const bool do_msg)
468 {
469 int err;
470
471 if (!ionic_is_fw_running(&lif->ionic->idev))
472 return 0;
473
474 err = ionic_adminq_post(lif, ctx);
475
476 return ionic_adminq_wait(lif, ctx, err, do_msg);
477 }
478
ionic_adminq_post_wait(struct ionic_lif * lif,struct ionic_admin_ctx * ctx)479 int ionic_adminq_post_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx)
480 {
481 return __ionic_adminq_post_wait(lif, ctx, true);
482 }
483
ionic_adminq_post_wait_nomsg(struct ionic_lif * lif,struct ionic_admin_ctx * ctx)484 int ionic_adminq_post_wait_nomsg(struct ionic_lif *lif, struct ionic_admin_ctx *ctx)
485 {
486 return __ionic_adminq_post_wait(lif, ctx, false);
487 }
488
ionic_dev_cmd_clean(struct ionic * ionic)489 static void ionic_dev_cmd_clean(struct ionic *ionic)
490 {
491 struct ionic_dev *idev = &ionic->idev;
492
493 if (!idev->dev_cmd_regs)
494 return;
495
496 iowrite32(0, &idev->dev_cmd_regs->doorbell);
497 memset_io(&idev->dev_cmd_regs->cmd, 0, sizeof(idev->dev_cmd_regs->cmd));
498 }
499
ionic_dev_cmd_dev_err_print(struct ionic * ionic,u8 opcode,u8 status,int err)500 void ionic_dev_cmd_dev_err_print(struct ionic *ionic, u8 opcode, u8 status,
501 int err)
502 {
503 const char *stat_str;
504
505 stat_str = (err == -ETIMEDOUT) ? "TIMEOUT" :
506 ionic_error_to_str(status);
507
508 dev_err(ionic->dev, "DEV_CMD %s (%d) error, %s (%d) failed\n",
509 ionic_opcode_to_str(opcode), opcode, stat_str, err);
510 }
511
__ionic_dev_cmd_wait(struct ionic * ionic,unsigned long max_seconds,const bool do_msg)512 static int __ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_seconds,
513 const bool do_msg)
514 {
515 struct ionic_dev *idev = &ionic->idev;
516 unsigned long start_time;
517 unsigned long max_wait;
518 unsigned long duration;
519 int done = 0;
520 bool fw_up;
521 int opcode;
522 int err;
523
524 /* Wait for dev cmd to complete, retrying if we get EAGAIN,
525 * but don't wait any longer than max_seconds.
526 */
527 max_wait = jiffies + (max_seconds * HZ);
528 try_again:
529 opcode = idev->opcode;
530 start_time = jiffies;
531 for (fw_up = ionic_is_fw_running(idev);
532 !done && fw_up && time_before(jiffies, max_wait);
533 fw_up = ionic_is_fw_running(idev)) {
534 done = ionic_dev_cmd_done(idev);
535 if (done)
536 break;
537 usleep_range(100, 200);
538 }
539 duration = jiffies - start_time;
540
541 dev_dbg(ionic->dev, "DEVCMD %s (%d) done=%d took %ld secs (%ld jiffies)\n",
542 ionic_opcode_to_str(opcode), opcode,
543 done, duration / HZ, duration);
544
545 if (!done && !fw_up) {
546 ionic_dev_cmd_clean(ionic);
547 dev_warn(ionic->dev, "DEVCMD %s (%d) interrupted - FW is down\n",
548 ionic_opcode_to_str(opcode), opcode);
549 return -ENXIO;
550 }
551
552 if (!done && !time_before(jiffies, max_wait)) {
553 ionic_dev_cmd_clean(ionic);
554 dev_warn(ionic->dev, "DEVCMD %s (%d) timeout after %ld secs\n",
555 ionic_opcode_to_str(opcode), opcode, max_seconds);
556 return -ETIMEDOUT;
557 }
558
559 err = ionic_dev_cmd_status(&ionic->idev);
560 if (err) {
561 if (err == IONIC_RC_EAGAIN &&
562 time_before(jiffies, (max_wait - HZ))) {
563 dev_dbg(ionic->dev, "DEV_CMD %s (%d), %s (%d) retrying...\n",
564 ionic_opcode_to_str(opcode), opcode,
565 ionic_error_to_str(err), err);
566
567 iowrite32(0, &idev->dev_cmd_regs->done);
568 msleep(1000);
569 iowrite32(1, &idev->dev_cmd_regs->doorbell);
570 goto try_again;
571 }
572
573 if (!(opcode == IONIC_CMD_FW_CONTROL && err == IONIC_RC_EAGAIN))
574 if (do_msg)
575 ionic_dev_cmd_dev_err_print(ionic, opcode, err,
576 ionic_error_to_errno(err));
577
578 return ionic_error_to_errno(err);
579 }
580
581 ionic_dev_cmd_clean(ionic);
582
583 return 0;
584 }
585
ionic_dev_cmd_wait(struct ionic * ionic,unsigned long max_seconds)586 int ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_seconds)
587 {
588 return __ionic_dev_cmd_wait(ionic, max_seconds, true);
589 }
590
ionic_dev_cmd_wait_nomsg(struct ionic * ionic,unsigned long max_seconds)591 int ionic_dev_cmd_wait_nomsg(struct ionic *ionic, unsigned long max_seconds)
592 {
593 return __ionic_dev_cmd_wait(ionic, max_seconds, false);
594 }
595
ionic_setup(struct ionic * ionic)596 int ionic_setup(struct ionic *ionic)
597 {
598 int err;
599
600 err = ionic_dev_setup(ionic);
601 if (err)
602 return err;
603 ionic_reset(ionic);
604
605 return 0;
606 }
607
ionic_identify(struct ionic * ionic)608 int ionic_identify(struct ionic *ionic)
609 {
610 struct ionic_identity *ident = &ionic->ident;
611 struct ionic_dev *idev = &ionic->idev;
612 size_t sz;
613 int err;
614
615 memset(ident, 0, sizeof(*ident));
616
617 ident->drv.os_type = cpu_to_le32(IONIC_OS_TYPE_LINUX);
618 strscpy(ident->drv.driver_ver_str, UTS_RELEASE,
619 sizeof(ident->drv.driver_ver_str));
620
621 mutex_lock(&ionic->dev_cmd_lock);
622
623 sz = min(sizeof(ident->drv), sizeof(idev->dev_cmd_regs->data));
624 memcpy_toio(&idev->dev_cmd_regs->data, &ident->drv, sz);
625
626 ionic_dev_cmd_identify(idev, IONIC_DEV_IDENTITY_VERSION_2);
627 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
628 if (!err) {
629 sz = min(sizeof(ident->dev), sizeof(idev->dev_cmd_regs->data));
630 memcpy_fromio(&ident->dev, &idev->dev_cmd_regs->data, sz);
631 }
632 mutex_unlock(&ionic->dev_cmd_lock);
633
634 if (err) {
635 dev_err(ionic->dev, "Cannot identify ionic: %d\n", err);
636 goto err_out;
637 }
638
639 if (isprint(idev->dev_info.fw_version[0]) &&
640 isascii(idev->dev_info.fw_version[0]))
641 dev_info(ionic->dev, "FW: %.*s\n",
642 (int)(sizeof(idev->dev_info.fw_version) - 1),
643 idev->dev_info.fw_version);
644 else
645 dev_info(ionic->dev, "FW: (invalid string) 0x%02x 0x%02x 0x%02x 0x%02x ...\n",
646 (u8)idev->dev_info.fw_version[0],
647 (u8)idev->dev_info.fw_version[1],
648 (u8)idev->dev_info.fw_version[2],
649 (u8)idev->dev_info.fw_version[3]);
650
651 err = ionic_lif_identify(ionic, IONIC_LIF_TYPE_CLASSIC,
652 &ionic->ident.lif);
653 if (err) {
654 dev_err(ionic->dev, "Cannot identify LIFs: %d\n", err);
655 goto err_out;
656 }
657
658 return 0;
659
660 err_out:
661 return err;
662 }
663
ionic_init(struct ionic * ionic)664 int ionic_init(struct ionic *ionic)
665 {
666 struct ionic_dev *idev = &ionic->idev;
667 int err;
668
669 mutex_lock(&ionic->dev_cmd_lock);
670 ionic_dev_cmd_init(idev);
671 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
672 mutex_unlock(&ionic->dev_cmd_lock);
673
674 return err;
675 }
676
ionic_reset(struct ionic * ionic)677 int ionic_reset(struct ionic *ionic)
678 {
679 struct ionic_dev *idev = &ionic->idev;
680 int err;
681
682 if (!ionic_is_fw_running(idev))
683 return 0;
684
685 mutex_lock(&ionic->dev_cmd_lock);
686 ionic_dev_cmd_reset(idev);
687 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
688 mutex_unlock(&ionic->dev_cmd_lock);
689
690 return err;
691 }
692
ionic_port_identify(struct ionic * ionic)693 int ionic_port_identify(struct ionic *ionic)
694 {
695 struct ionic_identity *ident = &ionic->ident;
696 struct ionic_dev *idev = &ionic->idev;
697 size_t sz;
698 int err;
699
700 mutex_lock(&ionic->dev_cmd_lock);
701
702 ionic_dev_cmd_port_identify(idev);
703 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
704 if (!err) {
705 sz = min(sizeof(ident->port), sizeof(idev->dev_cmd_regs->data));
706 memcpy_fromio(&ident->port, &idev->dev_cmd_regs->data, sz);
707 }
708
709 mutex_unlock(&ionic->dev_cmd_lock);
710
711 return err;
712 }
713
ionic_port_init(struct ionic * ionic)714 int ionic_port_init(struct ionic *ionic)
715 {
716 struct ionic_identity *ident = &ionic->ident;
717 struct ionic_dev *idev = &ionic->idev;
718 size_t sz;
719 int err;
720
721 if (!idev->port_info) {
722 idev->port_info_sz = ALIGN(sizeof(*idev->port_info), PAGE_SIZE);
723 idev->port_info = dma_alloc_coherent(ionic->dev,
724 idev->port_info_sz,
725 &idev->port_info_pa,
726 GFP_KERNEL);
727 if (!idev->port_info)
728 return -ENOMEM;
729 }
730
731 sz = min(sizeof(ident->port.config), sizeof(idev->dev_cmd_regs->data));
732
733 mutex_lock(&ionic->dev_cmd_lock);
734
735 memcpy_toio(&idev->dev_cmd_regs->data, &ident->port.config, sz);
736 ionic_dev_cmd_port_init(idev);
737 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
738
739 ionic_dev_cmd_port_state(&ionic->idev, IONIC_PORT_ADMIN_STATE_UP);
740 ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
741
742 mutex_unlock(&ionic->dev_cmd_lock);
743 if (err) {
744 dev_err(ionic->dev, "Failed to init port\n");
745 dma_free_coherent(ionic->dev, idev->port_info_sz,
746 idev->port_info, idev->port_info_pa);
747 idev->port_info = NULL;
748 idev->port_info_pa = 0;
749 }
750
751 return err;
752 }
753
ionic_port_reset(struct ionic * ionic)754 int ionic_port_reset(struct ionic *ionic)
755 {
756 struct ionic_dev *idev = &ionic->idev;
757 int err = 0;
758
759 if (!idev->port_info)
760 return 0;
761
762 if (ionic_is_fw_running(idev)) {
763 mutex_lock(&ionic->dev_cmd_lock);
764 ionic_dev_cmd_port_reset(idev);
765 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
766 mutex_unlock(&ionic->dev_cmd_lock);
767 }
768
769 dma_free_coherent(ionic->dev, idev->port_info_sz,
770 idev->port_info, idev->port_info_pa);
771
772 idev->port_info = NULL;
773 idev->port_info_pa = 0;
774
775 return err;
776 }
777
ionic_init_module(void)778 static int __init ionic_init_module(void)
779 {
780 int ret;
781
782 ionic_debugfs_create();
783 ret = ionic_bus_register_driver();
784 if (ret)
785 ionic_debugfs_destroy();
786
787 return ret;
788 }
789
ionic_cleanup_module(void)790 static void __exit ionic_cleanup_module(void)
791 {
792 ionic_bus_unregister_driver();
793 ionic_debugfs_destroy();
794
795 pr_info("%s removed\n", IONIC_DRV_NAME);
796 }
797
798 module_init(ionic_init_module);
799 module_exit(ionic_cleanup_module);
800