1
2
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
17MODULE_DESCRIPTION(IONIC_DRV_DESCRIPTION);
18MODULE_AUTHOR("Pensando Systems, Inc");
19MODULE_LICENSE("GPL");
20
21static 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
75static 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 case IONIC_RC_ENOSUPP:
85 return -EINVAL;
86 case IONIC_RC_EPERM:
87 return -EPERM;
88 case IONIC_RC_ENOENT:
89 return -ENOENT;
90 case IONIC_RC_EAGAIN:
91 return -EAGAIN;
92 case IONIC_RC_ENOMEM:
93 return -ENOMEM;
94 case IONIC_RC_EFAULT:
95 return -EFAULT;
96 case IONIC_RC_EBUSY:
97 return -EBUSY;
98 case IONIC_RC_EEXIST:
99 return -EEXIST;
100 case IONIC_RC_ENOSPC:
101 return -ENOSPC;
102 case IONIC_RC_ERANGE:
103 return -ERANGE;
104 case IONIC_RC_BAD_ADDR:
105 return -EFAULT;
106 case IONIC_RC_EOPCODE:
107 case IONIC_RC_EINTR:
108 case IONIC_RC_DEV_CMD:
109 case IONIC_RC_ERROR:
110 case IONIC_RC_ERDMA:
111 case IONIC_RC_EIO:
112 default:
113 return -EIO;
114 }
115}
116
117static const char *ionic_opcode_to_str(enum ionic_cmd_opcode opcode)
118{
119 switch (opcode) {
120 case IONIC_CMD_NOP:
121 return "IONIC_CMD_NOP";
122 case IONIC_CMD_INIT:
123 return "IONIC_CMD_INIT";
124 case IONIC_CMD_RESET:
125 return "IONIC_CMD_RESET";
126 case IONIC_CMD_IDENTIFY:
127 return "IONIC_CMD_IDENTIFY";
128 case IONIC_CMD_GETATTR:
129 return "IONIC_CMD_GETATTR";
130 case IONIC_CMD_SETATTR:
131 return "IONIC_CMD_SETATTR";
132 case IONIC_CMD_PORT_IDENTIFY:
133 return "IONIC_CMD_PORT_IDENTIFY";
134 case IONIC_CMD_PORT_INIT:
135 return "IONIC_CMD_PORT_INIT";
136 case IONIC_CMD_PORT_RESET:
137 return "IONIC_CMD_PORT_RESET";
138 case IONIC_CMD_PORT_GETATTR:
139 return "IONIC_CMD_PORT_GETATTR";
140 case IONIC_CMD_PORT_SETATTR:
141 return "IONIC_CMD_PORT_SETATTR";
142 case IONIC_CMD_LIF_INIT:
143 return "IONIC_CMD_LIF_INIT";
144 case IONIC_CMD_LIF_RESET:
145 return "IONIC_CMD_LIF_RESET";
146 case IONIC_CMD_LIF_IDENTIFY:
147 return "IONIC_CMD_LIF_IDENTIFY";
148 case IONIC_CMD_LIF_SETATTR:
149 return "IONIC_CMD_LIF_SETATTR";
150 case IONIC_CMD_LIF_GETATTR:
151 return "IONIC_CMD_LIF_GETATTR";
152 case IONIC_CMD_LIF_SETPHC:
153 return "IONIC_CMD_LIF_SETPHC";
154 case IONIC_CMD_RX_MODE_SET:
155 return "IONIC_CMD_RX_MODE_SET";
156 case IONIC_CMD_RX_FILTER_ADD:
157 return "IONIC_CMD_RX_FILTER_ADD";
158 case IONIC_CMD_RX_FILTER_DEL:
159 return "IONIC_CMD_RX_FILTER_DEL";
160 case IONIC_CMD_Q_IDENTIFY:
161 return "IONIC_CMD_Q_IDENTIFY";
162 case IONIC_CMD_Q_INIT:
163 return "IONIC_CMD_Q_INIT";
164 case IONIC_CMD_Q_CONTROL:
165 return "IONIC_CMD_Q_CONTROL";
166 case IONIC_CMD_RDMA_RESET_LIF:
167 return "IONIC_CMD_RDMA_RESET_LIF";
168 case IONIC_CMD_RDMA_CREATE_EQ:
169 return "IONIC_CMD_RDMA_CREATE_EQ";
170 case IONIC_CMD_RDMA_CREATE_CQ:
171 return "IONIC_CMD_RDMA_CREATE_CQ";
172 case IONIC_CMD_RDMA_CREATE_ADMINQ:
173 return "IONIC_CMD_RDMA_CREATE_ADMINQ";
174 case IONIC_CMD_FW_DOWNLOAD:
175 return "IONIC_CMD_FW_DOWNLOAD";
176 case IONIC_CMD_FW_CONTROL:
177 return "IONIC_CMD_FW_CONTROL";
178 case IONIC_CMD_FW_DOWNLOAD_V1:
179 return "IONIC_CMD_FW_DOWNLOAD_V1";
180 case IONIC_CMD_FW_CONTROL_V1:
181 return "IONIC_CMD_FW_CONTROL_V1";
182 case IONIC_CMD_VF_GETATTR:
183 return "IONIC_CMD_VF_GETATTR";
184 case IONIC_CMD_VF_SETATTR:
185 return "IONIC_CMD_VF_SETATTR";
186 default:
187 return "DEVCMD_UNKNOWN";
188 }
189}
190
191static void ionic_adminq_flush(struct ionic_lif *lif)
192{
193 struct ionic_desc_info *desc_info;
194 unsigned long irqflags;
195 struct ionic_queue *q;
196
197 spin_lock_irqsave(&lif->adminq_lock, irqflags);
198 if (!lif->adminqcq) {
199 spin_unlock_irqrestore(&lif->adminq_lock, irqflags);
200 return;
201 }
202
203 q = &lif->adminqcq->q;
204
205 while (q->tail_idx != q->head_idx) {
206 desc_info = &q->info[q->tail_idx];
207 memset(desc_info->desc, 0, sizeof(union ionic_adminq_cmd));
208 desc_info->cb = NULL;
209 desc_info->cb_arg = NULL;
210 q->tail_idx = (q->tail_idx + 1) & (q->num_descs - 1);
211 }
212 spin_unlock_irqrestore(&lif->adminq_lock, irqflags);
213}
214
215void ionic_adminq_netdev_err_print(struct ionic_lif *lif, u8 opcode,
216 u8 status, int err)
217{
218 netdev_err(lif->netdev, "%s (%d) failed: %s (%d)\n",
219 ionic_opcode_to_str(opcode), opcode,
220 ionic_error_to_str(status), err);
221}
222
223static int ionic_adminq_check_err(struct ionic_lif *lif,
224 struct ionic_admin_ctx *ctx,
225 const bool timeout,
226 const bool do_msg)
227{
228 int err = 0;
229
230 if (ctx->comp.comp.status || timeout) {
231 err = timeout ? -ETIMEDOUT :
232 ionic_error_to_errno(ctx->comp.comp.status);
233
234 if (do_msg)
235 ionic_adminq_netdev_err_print(lif, ctx->cmd.cmd.opcode,
236 ctx->comp.comp.status, err);
237
238 if (timeout)
239 ionic_adminq_flush(lif);
240 }
241
242 return err;
243}
244
245static void ionic_adminq_cb(struct ionic_queue *q,
246 struct ionic_desc_info *desc_info,
247 struct ionic_cq_info *cq_info, void *cb_arg)
248{
249 struct ionic_admin_ctx *ctx = cb_arg;
250 struct ionic_admin_comp *comp;
251
252 if (!ctx)
253 return;
254
255 comp = cq_info->cq_desc;
256
257 memcpy(&ctx->comp, comp, sizeof(*comp));
258
259 dev_dbg(q->dev, "comp admin queue command:\n");
260 dynamic_hex_dump("comp ", DUMP_PREFIX_OFFSET, 16, 1,
261 &ctx->comp, sizeof(ctx->comp), true);
262
263 complete_all(&ctx->work);
264}
265
266int ionic_adminq_post(struct ionic_lif *lif, struct ionic_admin_ctx *ctx)
267{
268 struct ionic_desc_info *desc_info;
269 unsigned long irqflags;
270 struct ionic_queue *q;
271 int err = 0;
272
273 spin_lock_irqsave(&lif->adminq_lock, irqflags);
274 if (!lif->adminqcq) {
275 spin_unlock_irqrestore(&lif->adminq_lock, irqflags);
276 return -EIO;
277 }
278
279 q = &lif->adminqcq->q;
280
281 if (!ionic_q_has_space(q, 1)) {
282 err = -ENOSPC;
283 goto err_out;
284 }
285
286 err = ionic_heartbeat_check(lif->ionic);
287 if (err)
288 goto err_out;
289
290 desc_info = &q->info[q->head_idx];
291 memcpy(desc_info->desc, &ctx->cmd, sizeof(ctx->cmd));
292
293 dev_dbg(&lif->netdev->dev, "post admin queue command:\n");
294 dynamic_hex_dump("cmd ", DUMP_PREFIX_OFFSET, 16, 1,
295 &ctx->cmd, sizeof(ctx->cmd), true);
296
297 ionic_q_post(q, true, ionic_adminq_cb, ctx);
298
299err_out:
300 spin_unlock_irqrestore(&lif->adminq_lock, irqflags);
301
302 return err;
303}
304
305int ionic_adminq_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx,
306 const int err, const bool do_msg)
307{
308 struct net_device *netdev = lif->netdev;
309 unsigned long time_limit;
310 unsigned long time_start;
311 unsigned long time_done;
312 unsigned long remaining;
313 const char *name;
314
315 name = ionic_opcode_to_str(ctx->cmd.cmd.opcode);
316
317 if (err) {
318 if (do_msg && !test_bit(IONIC_LIF_F_FW_RESET, lif->state))
319 netdev_err(netdev, "Posting of %s (%d) failed: %d\n",
320 name, ctx->cmd.cmd.opcode, err);
321 return err;
322 }
323
324 time_start = jiffies;
325 time_limit = time_start + HZ * (ulong)DEVCMD_TIMEOUT;
326 do {
327 remaining = wait_for_completion_timeout(&ctx->work,
328 IONIC_ADMINQ_TIME_SLICE);
329
330
331 if (remaining)
332 break;
333
334
335 if (test_bit(IONIC_LIF_F_FW_RESET, lif->state)) {
336 if (do_msg)
337 netdev_err(netdev, "%s (%d) interrupted, FW in reset\n",
338 name, ctx->cmd.cmd.opcode);
339 return -ENXIO;
340 }
341
342 } while (time_before(jiffies, time_limit));
343 time_done = jiffies;
344
345 dev_dbg(lif->ionic->dev, "%s: elapsed %d msecs\n",
346 __func__, jiffies_to_msecs(time_done - time_start));
347
348 return ionic_adminq_check_err(lif, ctx,
349 time_after_eq(time_done, time_limit),
350 do_msg);
351}
352
353int ionic_adminq_post_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx)
354{
355 int err;
356
357 err = ionic_adminq_post(lif, ctx);
358
359 return ionic_adminq_wait(lif, ctx, err, true);
360}
361
362int ionic_adminq_post_wait_nomsg(struct ionic_lif *lif, struct ionic_admin_ctx *ctx)
363{
364 int err;
365
366 err = ionic_adminq_post(lif, ctx);
367
368 return ionic_adminq_wait(lif, ctx, err, false);
369}
370
371static void ionic_dev_cmd_clean(struct ionic *ionic)
372{
373 union __iomem ionic_dev_cmd_regs *regs = ionic->idev.dev_cmd_regs;
374
375 iowrite32(0, ®s->doorbell);
376 memset_io(®s->cmd, 0, sizeof(regs->cmd));
377}
378
379int ionic_dev_cmd_wait(struct ionic *ionic, unsigned long max_seconds)
380{
381 struct ionic_dev *idev = &ionic->idev;
382 unsigned long start_time;
383 unsigned long max_wait;
384 unsigned long duration;
385 int opcode;
386 int hb = 0;
387 int done;
388 int err;
389
390
391
392
393 max_wait = jiffies + (max_seconds * HZ);
394try_again:
395 opcode = readb(&idev->dev_cmd_regs->cmd.cmd.opcode);
396 start_time = jiffies;
397 do {
398 done = ionic_dev_cmd_done(idev);
399 if (done)
400 break;
401 usleep_range(100, 200);
402
403
404
405
406 if (opcode != IONIC_CMD_FW_CONTROL)
407 hb = ionic_heartbeat_check(ionic);
408 } while (!done && !hb && time_before(jiffies, max_wait));
409 duration = jiffies - start_time;
410
411 dev_dbg(ionic->dev, "DEVCMD %s (%d) done=%d took %ld secs (%ld jiffies)\n",
412 ionic_opcode_to_str(opcode), opcode,
413 done, duration / HZ, duration);
414
415 if (!done && hb) {
416
417
418
419
420 dev_dbg(ionic->dev, "DEVCMD %s (%d) failed - FW halted\n",
421 ionic_opcode_to_str(opcode), opcode);
422 return -ENXIO;
423 }
424
425 if (!done && !time_before(jiffies, max_wait)) {
426 ionic_dev_cmd_clean(ionic);
427 dev_warn(ionic->dev, "DEVCMD %s (%d) timeout after %ld secs\n",
428 ionic_opcode_to_str(opcode), opcode, max_seconds);
429 return -ETIMEDOUT;
430 }
431
432 err = ionic_dev_cmd_status(&ionic->idev);
433 if (err) {
434 if (err == IONIC_RC_EAGAIN &&
435 time_before(jiffies, (max_wait - HZ))) {
436 dev_dbg(ionic->dev, "DEV_CMD %s (%d), %s (%d) retrying...\n",
437 ionic_opcode_to_str(opcode), opcode,
438 ionic_error_to_str(err), err);
439
440 msleep(1000);
441 iowrite32(0, &idev->dev_cmd_regs->done);
442 iowrite32(1, &idev->dev_cmd_regs->doorbell);
443 goto try_again;
444 }
445
446 if (!(opcode == IONIC_CMD_FW_CONTROL && err == IONIC_RC_EAGAIN))
447 dev_err(ionic->dev, "DEV_CMD %s (%d) error, %s (%d) failed\n",
448 ionic_opcode_to_str(opcode), opcode,
449 ionic_error_to_str(err), err);
450
451 return ionic_error_to_errno(err);
452 }
453
454 return 0;
455}
456
457int ionic_setup(struct ionic *ionic)
458{
459 int err;
460
461 err = ionic_dev_setup(ionic);
462 if (err)
463 return err;
464 ionic_reset(ionic);
465
466 return 0;
467}
468
469int ionic_identify(struct ionic *ionic)
470{
471 struct ionic_identity *ident = &ionic->ident;
472 struct ionic_dev *idev = &ionic->idev;
473 size_t sz;
474 int err;
475
476 memset(ident, 0, sizeof(*ident));
477
478 ident->drv.os_type = cpu_to_le32(IONIC_OS_TYPE_LINUX);
479 strncpy(ident->drv.driver_ver_str, UTS_RELEASE,
480 sizeof(ident->drv.driver_ver_str) - 1);
481
482 mutex_lock(&ionic->dev_cmd_lock);
483
484 sz = min(sizeof(ident->drv), sizeof(idev->dev_cmd_regs->data));
485 memcpy_toio(&idev->dev_cmd_regs->data, &ident->drv, sz);
486
487 ionic_dev_cmd_identify(idev, IONIC_IDENTITY_VERSION_1);
488 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
489 if (!err) {
490 sz = min(sizeof(ident->dev), sizeof(idev->dev_cmd_regs->data));
491 memcpy_fromio(&ident->dev, &idev->dev_cmd_regs->data, sz);
492 }
493 mutex_unlock(&ionic->dev_cmd_lock);
494
495 if (err) {
496 dev_err(ionic->dev, "Cannot identify ionic: %d\n", err);
497 goto err_out;
498 }
499
500 if (isprint(idev->dev_info.fw_version[0]) &&
501 isascii(idev->dev_info.fw_version[0]))
502 dev_info(ionic->dev, "FW: %.*s\n",
503 (int)(sizeof(idev->dev_info.fw_version) - 1),
504 idev->dev_info.fw_version);
505 else
506 dev_info(ionic->dev, "FW: (invalid string) 0x%02x 0x%02x 0x%02x 0x%02x ...\n",
507 (u8)idev->dev_info.fw_version[0],
508 (u8)idev->dev_info.fw_version[1],
509 (u8)idev->dev_info.fw_version[2],
510 (u8)idev->dev_info.fw_version[3]);
511
512 err = ionic_lif_identify(ionic, IONIC_LIF_TYPE_CLASSIC,
513 &ionic->ident.lif);
514 if (err) {
515 dev_err(ionic->dev, "Cannot identify LIFs: %d\n", err);
516 goto err_out;
517 }
518
519 return 0;
520
521err_out:
522 return err;
523}
524
525int ionic_init(struct ionic *ionic)
526{
527 struct ionic_dev *idev = &ionic->idev;
528 int err;
529
530 mutex_lock(&ionic->dev_cmd_lock);
531 ionic_dev_cmd_init(idev);
532 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
533 mutex_unlock(&ionic->dev_cmd_lock);
534
535 return err;
536}
537
538int ionic_reset(struct ionic *ionic)
539{
540 struct ionic_dev *idev = &ionic->idev;
541 int err;
542
543 mutex_lock(&ionic->dev_cmd_lock);
544 ionic_dev_cmd_reset(idev);
545 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
546 mutex_unlock(&ionic->dev_cmd_lock);
547
548 return err;
549}
550
551int ionic_port_identify(struct ionic *ionic)
552{
553 struct ionic_identity *ident = &ionic->ident;
554 struct ionic_dev *idev = &ionic->idev;
555 size_t sz;
556 int err;
557
558 mutex_lock(&ionic->dev_cmd_lock);
559
560 ionic_dev_cmd_port_identify(idev);
561 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
562 if (!err) {
563 sz = min(sizeof(ident->port), sizeof(idev->dev_cmd_regs->data));
564 memcpy_fromio(&ident->port, &idev->dev_cmd_regs->data, sz);
565 }
566
567 mutex_unlock(&ionic->dev_cmd_lock);
568
569 return err;
570}
571
572int ionic_port_init(struct ionic *ionic)
573{
574 struct ionic_identity *ident = &ionic->ident;
575 struct ionic_dev *idev = &ionic->idev;
576 size_t sz;
577 int err;
578
579 if (!idev->port_info) {
580 idev->port_info_sz = ALIGN(sizeof(*idev->port_info), PAGE_SIZE);
581 idev->port_info = dma_alloc_coherent(ionic->dev,
582 idev->port_info_sz,
583 &idev->port_info_pa,
584 GFP_KERNEL);
585 if (!idev->port_info)
586 return -ENOMEM;
587 }
588
589 sz = min(sizeof(ident->port.config), sizeof(idev->dev_cmd_regs->data));
590
591 mutex_lock(&ionic->dev_cmd_lock);
592
593 memcpy_toio(&idev->dev_cmd_regs->data, &ident->port.config, sz);
594 ionic_dev_cmd_port_init(idev);
595 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
596
597 ionic_dev_cmd_port_state(&ionic->idev, IONIC_PORT_ADMIN_STATE_UP);
598 (void)ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
599
600 mutex_unlock(&ionic->dev_cmd_lock);
601 if (err) {
602 dev_err(ionic->dev, "Failed to init port\n");
603 dma_free_coherent(ionic->dev, idev->port_info_sz,
604 idev->port_info, idev->port_info_pa);
605 idev->port_info = NULL;
606 idev->port_info_pa = 0;
607 }
608
609 return err;
610}
611
612int ionic_port_reset(struct ionic *ionic)
613{
614 struct ionic_dev *idev = &ionic->idev;
615 int err;
616
617 if (!idev->port_info)
618 return 0;
619
620 mutex_lock(&ionic->dev_cmd_lock);
621 ionic_dev_cmd_port_reset(idev);
622 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
623 mutex_unlock(&ionic->dev_cmd_lock);
624
625 dma_free_coherent(ionic->dev, idev->port_info_sz,
626 idev->port_info, idev->port_info_pa);
627
628 idev->port_info = NULL;
629 idev->port_info_pa = 0;
630
631 if (err)
632 dev_err(ionic->dev, "Failed to reset port\n");
633
634 return err;
635}
636
637static int __init ionic_init_module(void)
638{
639 ionic_debugfs_create();
640 return ionic_bus_register_driver();
641}
642
643static void __exit ionic_cleanup_module(void)
644{
645 ionic_bus_unregister_driver();
646 ionic_debugfs_destroy();
647
648 pr_info("%s removed\n", IONIC_DRV_NAME);
649}
650
651module_init(ionic_init_module);
652module_exit(ionic_cleanup_module);
653
