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7#include "hisi_sas.h"
8#define DRV_NAME "hisi_sas"
9
10#define DEV_IS_GONE(dev) \
11 ((!dev) || (dev->dev_type == SAS_PHY_UNUSED))
12
13static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device,
14 u8 *lun, struct hisi_sas_tmf_task *tmf);
15static int
16hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
17 struct domain_device *device,
18 int abort_flag, int tag);
19static int hisi_sas_softreset_ata_disk(struct domain_device *device);
20static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
21 void *funcdata);
22static void hisi_sas_release_task(struct hisi_hba *hisi_hba,
23 struct domain_device *device);
24static void hisi_sas_dev_gone(struct domain_device *device);
25
26u8 hisi_sas_get_ata_protocol(struct host_to_dev_fis *fis, int direction)
27{
28 switch (fis->command) {
29 case ATA_CMD_FPDMA_WRITE:
30 case ATA_CMD_FPDMA_READ:
31 case ATA_CMD_FPDMA_RECV:
32 case ATA_CMD_FPDMA_SEND:
33 case ATA_CMD_NCQ_NON_DATA:
34 return HISI_SAS_SATA_PROTOCOL_FPDMA;
35
36 case ATA_CMD_DOWNLOAD_MICRO:
37 case ATA_CMD_ID_ATA:
38 case ATA_CMD_PMP_READ:
39 case ATA_CMD_READ_LOG_EXT:
40 case ATA_CMD_PIO_READ:
41 case ATA_CMD_PIO_READ_EXT:
42 case ATA_CMD_PMP_WRITE:
43 case ATA_CMD_WRITE_LOG_EXT:
44 case ATA_CMD_PIO_WRITE:
45 case ATA_CMD_PIO_WRITE_EXT:
46 return HISI_SAS_SATA_PROTOCOL_PIO;
47
48 case ATA_CMD_DSM:
49 case ATA_CMD_DOWNLOAD_MICRO_DMA:
50 case ATA_CMD_PMP_READ_DMA:
51 case ATA_CMD_PMP_WRITE_DMA:
52 case ATA_CMD_READ:
53 case ATA_CMD_READ_EXT:
54 case ATA_CMD_READ_LOG_DMA_EXT:
55 case ATA_CMD_READ_STREAM_DMA_EXT:
56 case ATA_CMD_TRUSTED_RCV_DMA:
57 case ATA_CMD_TRUSTED_SND_DMA:
58 case ATA_CMD_WRITE:
59 case ATA_CMD_WRITE_EXT:
60 case ATA_CMD_WRITE_FUA_EXT:
61 case ATA_CMD_WRITE_QUEUED:
62 case ATA_CMD_WRITE_LOG_DMA_EXT:
63 case ATA_CMD_WRITE_STREAM_DMA_EXT:
64 case ATA_CMD_ZAC_MGMT_IN:
65 return HISI_SAS_SATA_PROTOCOL_DMA;
66
67 case ATA_CMD_CHK_POWER:
68 case ATA_CMD_DEV_RESET:
69 case ATA_CMD_EDD:
70 case ATA_CMD_FLUSH:
71 case ATA_CMD_FLUSH_EXT:
72 case ATA_CMD_VERIFY:
73 case ATA_CMD_VERIFY_EXT:
74 case ATA_CMD_SET_FEATURES:
75 case ATA_CMD_STANDBY:
76 case ATA_CMD_STANDBYNOW1:
77 case ATA_CMD_ZAC_MGMT_OUT:
78 return HISI_SAS_SATA_PROTOCOL_NONDATA;
79
80 case ATA_CMD_SET_MAX:
81 switch (fis->features) {
82 case ATA_SET_MAX_PASSWD:
83 case ATA_SET_MAX_LOCK:
84 return HISI_SAS_SATA_PROTOCOL_PIO;
85
86 case ATA_SET_MAX_PASSWD_DMA:
87 case ATA_SET_MAX_UNLOCK_DMA:
88 return HISI_SAS_SATA_PROTOCOL_DMA;
89
90 default:
91 return HISI_SAS_SATA_PROTOCOL_NONDATA;
92 }
93
94 default:
95 {
96 if (direction == DMA_NONE)
97 return HISI_SAS_SATA_PROTOCOL_NONDATA;
98 return HISI_SAS_SATA_PROTOCOL_PIO;
99 }
100 }
101}
102EXPORT_SYMBOL_GPL(hisi_sas_get_ata_protocol);
103
104void hisi_sas_sata_done(struct sas_task *task,
105 struct hisi_sas_slot *slot)
106{
107 struct task_status_struct *ts = &task->task_status;
108 struct ata_task_resp *resp = (struct ata_task_resp *)ts->buf;
109 struct hisi_sas_status_buffer *status_buf =
110 hisi_sas_status_buf_addr_mem(slot);
111 u8 *iu = &status_buf->iu[0];
112 struct dev_to_host_fis *d2h = (struct dev_to_host_fis *)iu;
113
114 resp->frame_len = sizeof(struct dev_to_host_fis);
115 memcpy(&resp->ending_fis[0], d2h, sizeof(struct dev_to_host_fis));
116
117 ts->buf_valid_size = sizeof(*resp);
118}
119EXPORT_SYMBOL_GPL(hisi_sas_sata_done);
120
121
122
123
124
125u8 hisi_sas_get_prog_phy_linkrate_mask(enum sas_linkrate max)
126{
127 u8 rate = 0;
128 int i;
129
130 max -= SAS_LINK_RATE_1_5_GBPS;
131 for (i = 0; i <= max; i++)
132 rate |= 1 << (i * 2);
133 return rate;
134}
135EXPORT_SYMBOL_GPL(hisi_sas_get_prog_phy_linkrate_mask);
136
137static struct hisi_hba *dev_to_hisi_hba(struct domain_device *device)
138{
139 return device->port->ha->lldd_ha;
140}
141
142struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port)
143{
144 return container_of(sas_port, struct hisi_sas_port, sas_port);
145}
146EXPORT_SYMBOL_GPL(to_hisi_sas_port);
147
148void hisi_sas_stop_phys(struct hisi_hba *hisi_hba)
149{
150 int phy_no;
151
152 for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++)
153 hisi_sas_phy_enable(hisi_hba, phy_no, 0);
154}
155EXPORT_SYMBOL_GPL(hisi_sas_stop_phys);
156
157static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx)
158{
159 void *bitmap = hisi_hba->slot_index_tags;
160
161 clear_bit(slot_idx, bitmap);
162}
163
164static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx)
165{
166 if (hisi_hba->hw->slot_index_alloc ||
167 slot_idx >= HISI_SAS_UNRESERVED_IPTT) {
168 spin_lock(&hisi_hba->lock);
169 hisi_sas_slot_index_clear(hisi_hba, slot_idx);
170 spin_unlock(&hisi_hba->lock);
171 }
172}
173
174static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx)
175{
176 void *bitmap = hisi_hba->slot_index_tags;
177
178 set_bit(slot_idx, bitmap);
179}
180
181static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba,
182 struct scsi_cmnd *scsi_cmnd)
183{
184 int index;
185 void *bitmap = hisi_hba->slot_index_tags;
186
187 if (scsi_cmnd)
188 return scsi_cmnd->request->tag;
189
190 spin_lock(&hisi_hba->lock);
191 index = find_next_zero_bit(bitmap, hisi_hba->slot_index_count,
192 hisi_hba->last_slot_index + 1);
193 if (index >= hisi_hba->slot_index_count) {
194 index = find_next_zero_bit(bitmap,
195 hisi_hba->slot_index_count,
196 HISI_SAS_UNRESERVED_IPTT);
197 if (index >= hisi_hba->slot_index_count) {
198 spin_unlock(&hisi_hba->lock);
199 return -SAS_QUEUE_FULL;
200 }
201 }
202 hisi_sas_slot_index_set(hisi_hba, index);
203 hisi_hba->last_slot_index = index;
204 spin_unlock(&hisi_hba->lock);
205
206 return index;
207}
208
209static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba)
210{
211 int i;
212
213 for (i = 0; i < hisi_hba->slot_index_count; ++i)
214 hisi_sas_slot_index_clear(hisi_hba, i);
215}
216
217void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task,
218 struct hisi_sas_slot *slot)
219{
220 int device_id = slot->device_id;
221 struct hisi_sas_device *sas_dev = &hisi_hba->devices[device_id];
222
223 if (task) {
224 struct device *dev = hisi_hba->dev;
225
226 if (!task->lldd_task)
227 return;
228
229 task->lldd_task = NULL;
230
231 if (!sas_protocol_ata(task->task_proto)) {
232 struct sas_ssp_task *ssp_task = &task->ssp_task;
233 struct scsi_cmnd *scsi_cmnd = ssp_task->cmd;
234
235 if (slot->n_elem)
236 dma_unmap_sg(dev, task->scatter,
237 task->num_scatter,
238 task->data_dir);
239 if (slot->n_elem_dif)
240 dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd),
241 scsi_prot_sg_count(scsi_cmnd),
242 task->data_dir);
243 }
244 }
245
246 spin_lock(&sas_dev->lock);
247 list_del_init(&slot->entry);
248 spin_unlock(&sas_dev->lock);
249
250 memset(slot, 0, offsetof(struct hisi_sas_slot, buf));
251
252 hisi_sas_slot_index_free(hisi_hba, slot->idx);
253}
254EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free);
255
256static void hisi_sas_task_prep_smp(struct hisi_hba *hisi_hba,
257 struct hisi_sas_slot *slot)
258{
259 hisi_hba->hw->prep_smp(hisi_hba, slot);
260}
261
262static void hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba,
263 struct hisi_sas_slot *slot)
264{
265 hisi_hba->hw->prep_ssp(hisi_hba, slot);
266}
267
268static void hisi_sas_task_prep_ata(struct hisi_hba *hisi_hba,
269 struct hisi_sas_slot *slot)
270{
271 hisi_hba->hw->prep_stp(hisi_hba, slot);
272}
273
274static void hisi_sas_task_prep_abort(struct hisi_hba *hisi_hba,
275 struct hisi_sas_slot *slot,
276 int device_id, int abort_flag, int tag_to_abort)
277{
278 hisi_hba->hw->prep_abort(hisi_hba, slot,
279 device_id, abort_flag, tag_to_abort);
280}
281
282static void hisi_sas_dma_unmap(struct hisi_hba *hisi_hba,
283 struct sas_task *task, int n_elem,
284 int n_elem_req)
285{
286 struct device *dev = hisi_hba->dev;
287
288 if (!sas_protocol_ata(task->task_proto)) {
289 if (task->num_scatter) {
290 if (n_elem)
291 dma_unmap_sg(dev, task->scatter,
292 task->num_scatter,
293 task->data_dir);
294 } else if (task->task_proto & SAS_PROTOCOL_SMP) {
295 if (n_elem_req)
296 dma_unmap_sg(dev, &task->smp_task.smp_req,
297 1, DMA_TO_DEVICE);
298 }
299 }
300}
301
302static int hisi_sas_dma_map(struct hisi_hba *hisi_hba,
303 struct sas_task *task, int *n_elem,
304 int *n_elem_req)
305{
306 struct device *dev = hisi_hba->dev;
307 int rc;
308
309 if (sas_protocol_ata(task->task_proto)) {
310 *n_elem = task->num_scatter;
311 } else {
312 unsigned int req_len;
313
314 if (task->num_scatter) {
315 *n_elem = dma_map_sg(dev, task->scatter,
316 task->num_scatter, task->data_dir);
317 if (!*n_elem) {
318 rc = -ENOMEM;
319 goto prep_out;
320 }
321 } else if (task->task_proto & SAS_PROTOCOL_SMP) {
322 *n_elem_req = dma_map_sg(dev, &task->smp_task.smp_req,
323 1, DMA_TO_DEVICE);
324 if (!*n_elem_req) {
325 rc = -ENOMEM;
326 goto prep_out;
327 }
328 req_len = sg_dma_len(&task->smp_task.smp_req);
329 if (req_len & 0x3) {
330 rc = -EINVAL;
331 goto err_out_dma_unmap;
332 }
333 }
334 }
335
336 if (*n_elem > HISI_SAS_SGE_PAGE_CNT) {
337 dev_err(dev, "task prep: n_elem(%d) > HISI_SAS_SGE_PAGE_CNT",
338 *n_elem);
339 rc = -EINVAL;
340 goto err_out_dma_unmap;
341 }
342 return 0;
343
344err_out_dma_unmap:
345
346 hisi_sas_dma_unmap(hisi_hba, task, *n_elem,
347 *n_elem_req);
348prep_out:
349 return rc;
350}
351
352static void hisi_sas_dif_dma_unmap(struct hisi_hba *hisi_hba,
353 struct sas_task *task, int n_elem_dif)
354{
355 struct device *dev = hisi_hba->dev;
356
357 if (n_elem_dif) {
358 struct sas_ssp_task *ssp_task = &task->ssp_task;
359 struct scsi_cmnd *scsi_cmnd = ssp_task->cmd;
360
361 dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd),
362 scsi_prot_sg_count(scsi_cmnd),
363 task->data_dir);
364 }
365}
366
367static int hisi_sas_dif_dma_map(struct hisi_hba *hisi_hba,
368 int *n_elem_dif, struct sas_task *task)
369{
370 struct device *dev = hisi_hba->dev;
371 struct sas_ssp_task *ssp_task;
372 struct scsi_cmnd *scsi_cmnd;
373 int rc;
374
375 if (task->num_scatter) {
376 ssp_task = &task->ssp_task;
377 scsi_cmnd = ssp_task->cmd;
378
379 if (scsi_prot_sg_count(scsi_cmnd)) {
380 *n_elem_dif = dma_map_sg(dev,
381 scsi_prot_sglist(scsi_cmnd),
382 scsi_prot_sg_count(scsi_cmnd),
383 task->data_dir);
384
385 if (!*n_elem_dif)
386 return -ENOMEM;
387
388 if (*n_elem_dif > HISI_SAS_SGE_DIF_PAGE_CNT) {
389 dev_err(dev, "task prep: n_elem_dif(%d) too large\n",
390 *n_elem_dif);
391 rc = -EINVAL;
392 goto err_out_dif_dma_unmap;
393 }
394 }
395 }
396
397 return 0;
398
399err_out_dif_dma_unmap:
400 dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd),
401 scsi_prot_sg_count(scsi_cmnd), task->data_dir);
402 return rc;
403}
404
405static int hisi_sas_task_prep(struct sas_task *task,
406 struct hisi_sas_dq **dq_pointer,
407 bool is_tmf, struct hisi_sas_tmf_task *tmf,
408 int *pass)
409{
410 struct domain_device *device = task->dev;
411 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
412 struct hisi_sas_device *sas_dev = device->lldd_dev;
413 struct hisi_sas_port *port;
414 struct hisi_sas_slot *slot;
415 struct hisi_sas_cmd_hdr *cmd_hdr_base;
416 struct asd_sas_port *sas_port = device->port;
417 struct device *dev = hisi_hba->dev;
418 int dlvry_queue_slot, dlvry_queue, rc, slot_idx;
419 int n_elem = 0, n_elem_dif = 0, n_elem_req = 0;
420 struct hisi_sas_dq *dq;
421 unsigned long flags;
422 int wr_q_index;
423
424 if (DEV_IS_GONE(sas_dev)) {
425 if (sas_dev)
426 dev_info(dev, "task prep: device %d not ready\n",
427 sas_dev->device_id);
428 else
429 dev_info(dev, "task prep: device %016llx not ready\n",
430 SAS_ADDR(device->sas_addr));
431
432 return -ECOMM;
433 }
434
435 if (hisi_hba->reply_map) {
436 int cpu = raw_smp_processor_id();
437 unsigned int dq_index = hisi_hba->reply_map[cpu];
438
439 *dq_pointer = dq = &hisi_hba->dq[dq_index];
440 } else {
441 *dq_pointer = dq = sas_dev->dq;
442 }
443
444 port = to_hisi_sas_port(sas_port);
445 if (port && !port->port_attached) {
446 dev_info(dev, "task prep: %s port%d not attach device\n",
447 (dev_is_sata(device)) ?
448 "SATA/STP" : "SAS",
449 device->port->id);
450
451 return -ECOMM;
452 }
453
454 rc = hisi_sas_dma_map(hisi_hba, task, &n_elem,
455 &n_elem_req);
456 if (rc < 0)
457 goto prep_out;
458
459 if (!sas_protocol_ata(task->task_proto)) {
460 rc = hisi_sas_dif_dma_map(hisi_hba, &n_elem_dif, task);
461 if (rc < 0)
462 goto err_out_dma_unmap;
463 }
464
465 if (hisi_hba->hw->slot_index_alloc)
466 rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device);
467 else {
468 struct scsi_cmnd *scsi_cmnd = NULL;
469
470 if (task->uldd_task) {
471 struct ata_queued_cmd *qc;
472
473 if (dev_is_sata(device)) {
474 qc = task->uldd_task;
475 scsi_cmnd = qc->scsicmd;
476 } else {
477 scsi_cmnd = task->uldd_task;
478 }
479 }
480 rc = hisi_sas_slot_index_alloc(hisi_hba, scsi_cmnd);
481 }
482 if (rc < 0)
483 goto err_out_dif_dma_unmap;
484
485 slot_idx = rc;
486 slot = &hisi_hba->slot_info[slot_idx];
487
488 spin_lock(&dq->lock);
489 wr_q_index = dq->wr_point;
490 dq->wr_point = (dq->wr_point + 1) % HISI_SAS_QUEUE_SLOTS;
491 list_add_tail(&slot->delivery, &dq->list);
492 spin_unlock(&dq->lock);
493 spin_lock(&sas_dev->lock);
494 list_add_tail(&slot->entry, &sas_dev->list);
495 spin_unlock(&sas_dev->lock);
496
497 dlvry_queue = dq->id;
498 dlvry_queue_slot = wr_q_index;
499
500 slot->device_id = sas_dev->device_id;
501 slot->n_elem = n_elem;
502 slot->n_elem_dif = n_elem_dif;
503 slot->dlvry_queue = dlvry_queue;
504 slot->dlvry_queue_slot = dlvry_queue_slot;
505 cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
506 slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
507 slot->task = task;
508 slot->port = port;
509 slot->tmf = tmf;
510 slot->is_internal = is_tmf;
511 task->lldd_task = slot;
512
513 memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
514 memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ);
515 memset(hisi_sas_status_buf_addr_mem(slot), 0,
516 sizeof(struct hisi_sas_err_record));
517
518 switch (task->task_proto) {
519 case SAS_PROTOCOL_SMP:
520 hisi_sas_task_prep_smp(hisi_hba, slot);
521 break;
522 case SAS_PROTOCOL_SSP:
523 hisi_sas_task_prep_ssp(hisi_hba, slot);
524 break;
525 case SAS_PROTOCOL_SATA:
526 case SAS_PROTOCOL_STP:
527 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
528 hisi_sas_task_prep_ata(hisi_hba, slot);
529 break;
530 default:
531 dev_err(dev, "task prep: unknown/unsupported proto (0x%x)\n",
532 task->task_proto);
533 break;
534 }
535
536 spin_lock_irqsave(&task->task_state_lock, flags);
537 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
538 spin_unlock_irqrestore(&task->task_state_lock, flags);
539
540 ++(*pass);
541 WRITE_ONCE(slot->ready, 1);
542
543 return 0;
544
545err_out_dif_dma_unmap:
546 if (!sas_protocol_ata(task->task_proto))
547 hisi_sas_dif_dma_unmap(hisi_hba, task, n_elem_dif);
548err_out_dma_unmap:
549 hisi_sas_dma_unmap(hisi_hba, task, n_elem,
550 n_elem_req);
551prep_out:
552 dev_err(dev, "task prep: failed[%d]!\n", rc);
553 return rc;
554}
555
556static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags,
557 bool is_tmf, struct hisi_sas_tmf_task *tmf)
558{
559 u32 rc;
560 u32 pass = 0;
561 struct hisi_hba *hisi_hba;
562 struct device *dev;
563 struct domain_device *device = task->dev;
564 struct asd_sas_port *sas_port = device->port;
565 struct hisi_sas_dq *dq = NULL;
566
567 if (!sas_port) {
568 struct task_status_struct *ts = &task->task_status;
569
570 ts->resp = SAS_TASK_UNDELIVERED;
571 ts->stat = SAS_PHY_DOWN;
572
573
574
575
576 if (device->dev_type != SAS_SATA_DEV)
577 task->task_done(task);
578 return -ECOMM;
579 }
580
581 hisi_hba = dev_to_hisi_hba(device);
582 dev = hisi_hba->dev;
583
584 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags))) {
585
586
587
588
589
590
591 if (!preemptible())
592 return -EINVAL;
593
594 down(&hisi_hba->sem);
595 up(&hisi_hba->sem);
596 }
597
598
599 rc = hisi_sas_task_prep(task, &dq, is_tmf, tmf, &pass);
600 if (rc)
601 dev_err(dev, "task exec: failed[%d]!\n", rc);
602
603 if (likely(pass)) {
604 spin_lock(&dq->lock);
605 hisi_hba->hw->start_delivery(dq);
606 spin_unlock(&dq->lock);
607 }
608
609 return rc;
610}
611
612static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no)
613{
614 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
615 struct asd_sas_phy *sas_phy = &phy->sas_phy;
616 struct sas_ha_struct *sas_ha;
617
618 if (!phy->phy_attached)
619 return;
620
621 sas_ha = &hisi_hba->sha;
622 sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE);
623
624 if (sas_phy->phy) {
625 struct sas_phy *sphy = sas_phy->phy;
626
627 sphy->negotiated_linkrate = sas_phy->linkrate;
628 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
629 sphy->maximum_linkrate_hw =
630 hisi_hba->hw->phy_get_max_linkrate();
631 if (sphy->minimum_linkrate == SAS_LINK_RATE_UNKNOWN)
632 sphy->minimum_linkrate = phy->minimum_linkrate;
633
634 if (sphy->maximum_linkrate == SAS_LINK_RATE_UNKNOWN)
635 sphy->maximum_linkrate = phy->maximum_linkrate;
636 }
637
638 if (phy->phy_type & PORT_TYPE_SAS) {
639 struct sas_identify_frame *id;
640
641 id = (struct sas_identify_frame *)phy->frame_rcvd;
642 id->dev_type = phy->identify.device_type;
643 id->initiator_bits = SAS_PROTOCOL_ALL;
644 id->target_bits = phy->identify.target_port_protocols;
645 } else if (phy->phy_type & PORT_TYPE_SATA) {
646
647 }
648
649 sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
650 sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED);
651}
652
653static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device)
654{
655 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
656 struct hisi_sas_device *sas_dev = NULL;
657 int last = hisi_hba->last_dev_id;
658 int first = (hisi_hba->last_dev_id + 1) % HISI_SAS_MAX_DEVICES;
659 int i;
660
661 spin_lock(&hisi_hba->lock);
662 for (i = first; i != last; i %= HISI_SAS_MAX_DEVICES) {
663 if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) {
664 int queue = i % hisi_hba->queue_count;
665 struct hisi_sas_dq *dq = &hisi_hba->dq[queue];
666
667 hisi_hba->devices[i].device_id = i;
668 sas_dev = &hisi_hba->devices[i];
669 sas_dev->dev_status = HISI_SAS_DEV_INIT;
670 sas_dev->dev_type = device->dev_type;
671 sas_dev->hisi_hba = hisi_hba;
672 sas_dev->sas_device = device;
673 sas_dev->dq = dq;
674 spin_lock_init(&sas_dev->lock);
675 INIT_LIST_HEAD(&hisi_hba->devices[i].list);
676 break;
677 }
678 i++;
679 }
680 hisi_hba->last_dev_id = i;
681 spin_unlock(&hisi_hba->lock);
682
683 return sas_dev;
684}
685
686#define HISI_SAS_DISK_RECOVER_CNT 3
687static int hisi_sas_init_device(struct domain_device *device)
688{
689 int rc = TMF_RESP_FUNC_COMPLETE;
690 struct scsi_lun lun;
691 struct hisi_sas_tmf_task tmf_task;
692 int retry = HISI_SAS_DISK_RECOVER_CNT;
693 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
694 struct device *dev = hisi_hba->dev;
695 struct sas_phy *local_phy;
696
697 switch (device->dev_type) {
698 case SAS_END_DEVICE:
699 int_to_scsilun(0, &lun);
700
701 tmf_task.tmf = TMF_CLEAR_TASK_SET;
702 while (retry-- > 0) {
703 rc = hisi_sas_debug_issue_ssp_tmf(device, lun.scsi_lun,
704 &tmf_task);
705 if (rc == TMF_RESP_FUNC_COMPLETE) {
706 hisi_sas_release_task(hisi_hba, device);
707 break;
708 }
709 }
710 break;
711 case SAS_SATA_DEV:
712 case SAS_SATA_PM:
713 case SAS_SATA_PM_PORT:
714 case SAS_SATA_PENDING:
715
716
717
718
719 local_phy = sas_get_local_phy(device);
720 if (!scsi_is_sas_phy_local(local_phy) &&
721 !test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)) {
722 unsigned long deadline = ata_deadline(jiffies, 20000);
723 struct sata_device *sata_dev = &device->sata_dev;
724 struct ata_host *ata_host = sata_dev->ata_host;
725 struct ata_port_operations *ops = ata_host->ops;
726 struct ata_port *ap = sata_dev->ap;
727 struct ata_link *link;
728 unsigned int classes;
729
730 ata_for_each_link(link, ap, EDGE)
731 rc = ops->hardreset(link, &classes,
732 deadline);
733 }
734 sas_put_local_phy(local_phy);
735 if (rc) {
736 dev_warn(dev, "SATA disk hardreset fail: %d\n", rc);
737 return rc;
738 }
739
740 while (retry-- > 0) {
741 rc = hisi_sas_softreset_ata_disk(device);
742 if (!rc)
743 break;
744 }
745 break;
746 default:
747 break;
748 }
749
750 return rc;
751}
752
753static int hisi_sas_dev_found(struct domain_device *device)
754{
755 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
756 struct domain_device *parent_dev = device->parent;
757 struct hisi_sas_device *sas_dev;
758 struct device *dev = hisi_hba->dev;
759 int rc;
760
761 if (hisi_hba->hw->alloc_dev)
762 sas_dev = hisi_hba->hw->alloc_dev(device);
763 else
764 sas_dev = hisi_sas_alloc_dev(device);
765 if (!sas_dev) {
766 dev_err(dev, "fail alloc dev: max support %d devices\n",
767 HISI_SAS_MAX_DEVICES);
768 return -EINVAL;
769 }
770
771 device->lldd_dev = sas_dev;
772 hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
773
774 if (parent_dev && dev_is_expander(parent_dev->dev_type)) {
775 int phy_no;
776 u8 phy_num = parent_dev->ex_dev.num_phys;
777 struct ex_phy *phy;
778
779 for (phy_no = 0; phy_no < phy_num; phy_no++) {
780 phy = &parent_dev->ex_dev.ex_phy[phy_no];
781 if (SAS_ADDR(phy->attached_sas_addr) ==
782 SAS_ADDR(device->sas_addr))
783 break;
784 }
785
786 if (phy_no == phy_num) {
787 dev_info(dev, "dev found: no attached "
788 "dev:%016llx at ex:%016llx\n",
789 SAS_ADDR(device->sas_addr),
790 SAS_ADDR(parent_dev->sas_addr));
791 rc = -EINVAL;
792 goto err_out;
793 }
794 }
795
796 dev_info(dev, "dev[%d:%x] found\n",
797 sas_dev->device_id, sas_dev->dev_type);
798
799 rc = hisi_sas_init_device(device);
800 if (rc)
801 goto err_out;
802 sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
803 return 0;
804
805err_out:
806 hisi_sas_dev_gone(device);
807 return rc;
808}
809
810int hisi_sas_slave_configure(struct scsi_device *sdev)
811{
812 struct domain_device *dev = sdev_to_domain_dev(sdev);
813 int ret = sas_slave_configure(sdev);
814
815 if (ret)
816 return ret;
817 if (!dev_is_sata(dev))
818 sas_change_queue_depth(sdev, 64);
819
820 return 0;
821}
822EXPORT_SYMBOL_GPL(hisi_sas_slave_configure);
823
824void hisi_sas_scan_start(struct Scsi_Host *shost)
825{
826 struct hisi_hba *hisi_hba = shost_priv(shost);
827
828 hisi_hba->hw->phys_init(hisi_hba);
829}
830EXPORT_SYMBOL_GPL(hisi_sas_scan_start);
831
832int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time)
833{
834 struct hisi_hba *hisi_hba = shost_priv(shost);
835 struct sas_ha_struct *sha = &hisi_hba->sha;
836
837
838 if (time < HZ)
839 return 0;
840
841 sas_drain_work(sha);
842 return 1;
843}
844EXPORT_SYMBOL_GPL(hisi_sas_scan_finished);
845
846static void hisi_sas_phyup_work(struct work_struct *work)
847{
848 struct hisi_sas_phy *phy =
849 container_of(work, typeof(*phy), works[HISI_PHYE_PHY_UP]);
850 struct hisi_hba *hisi_hba = phy->hisi_hba;
851 struct asd_sas_phy *sas_phy = &phy->sas_phy;
852 int phy_no = sas_phy->id;
853
854 if (phy->identify.target_port_protocols == SAS_PROTOCOL_SSP)
855 hisi_hba->hw->sl_notify_ssp(hisi_hba, phy_no);
856 hisi_sas_bytes_dmaed(hisi_hba, phy_no);
857}
858
859static void hisi_sas_linkreset_work(struct work_struct *work)
860{
861 struct hisi_sas_phy *phy =
862 container_of(work, typeof(*phy), works[HISI_PHYE_LINK_RESET]);
863 struct asd_sas_phy *sas_phy = &phy->sas_phy;
864
865 hisi_sas_control_phy(sas_phy, PHY_FUNC_LINK_RESET, NULL);
866}
867
868static const work_func_t hisi_sas_phye_fns[HISI_PHYES_NUM] = {
869 [HISI_PHYE_PHY_UP] = hisi_sas_phyup_work,
870 [HISI_PHYE_LINK_RESET] = hisi_sas_linkreset_work,
871};
872
873bool hisi_sas_notify_phy_event(struct hisi_sas_phy *phy,
874 enum hisi_sas_phy_event event)
875{
876 struct hisi_hba *hisi_hba = phy->hisi_hba;
877
878 if (WARN_ON(event >= HISI_PHYES_NUM))
879 return false;
880
881 return queue_work(hisi_hba->wq, &phy->works[event]);
882}
883EXPORT_SYMBOL_GPL(hisi_sas_notify_phy_event);
884
885static void hisi_sas_wait_phyup_timedout(struct timer_list *t)
886{
887 struct hisi_sas_phy *phy = from_timer(phy, t, timer);
888 struct hisi_hba *hisi_hba = phy->hisi_hba;
889 struct device *dev = hisi_hba->dev;
890 int phy_no = phy->sas_phy.id;
891
892 dev_warn(dev, "phy%d wait phyup timeout, issuing link reset\n", phy_no);
893 hisi_sas_notify_phy_event(phy, HISI_PHYE_LINK_RESET);
894}
895
896void hisi_sas_phy_oob_ready(struct hisi_hba *hisi_hba, int phy_no)
897{
898 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
899 struct device *dev = hisi_hba->dev;
900
901 dev_dbg(dev, "phy%d OOB ready\n", phy_no);
902 if (phy->phy_attached)
903 return;
904
905 if (!timer_pending(&phy->timer)) {
906 phy->timer.expires = jiffies + HISI_SAS_WAIT_PHYUP_TIMEOUT * HZ;
907 add_timer(&phy->timer);
908 }
909}
910EXPORT_SYMBOL_GPL(hisi_sas_phy_oob_ready);
911
912static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no)
913{
914 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
915 struct asd_sas_phy *sas_phy = &phy->sas_phy;
916 int i;
917
918 phy->hisi_hba = hisi_hba;
919 phy->port = NULL;
920 phy->minimum_linkrate = SAS_LINK_RATE_1_5_GBPS;
921 phy->maximum_linkrate = hisi_hba->hw->phy_get_max_linkrate();
922 sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0;
923 sas_phy->class = SAS;
924 sas_phy->iproto = SAS_PROTOCOL_ALL;
925 sas_phy->tproto = 0;
926 sas_phy->type = PHY_TYPE_PHYSICAL;
927 sas_phy->role = PHY_ROLE_INITIATOR;
928 sas_phy->oob_mode = OOB_NOT_CONNECTED;
929 sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
930 sas_phy->id = phy_no;
931 sas_phy->sas_addr = &hisi_hba->sas_addr[0];
932 sas_phy->frame_rcvd = &phy->frame_rcvd[0];
933 sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata;
934 sas_phy->lldd_phy = phy;
935
936 for (i = 0; i < HISI_PHYES_NUM; i++)
937 INIT_WORK(&phy->works[i], hisi_sas_phye_fns[i]);
938
939 spin_lock_init(&phy->lock);
940
941 timer_setup(&phy->timer, hisi_sas_wait_phyup_timedout, 0);
942}
943
944
945void hisi_sas_phy_enable(struct hisi_hba *hisi_hba, int phy_no, int enable)
946{
947 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
948 struct asd_sas_phy *aphy = &phy->sas_phy;
949 struct sas_phy *sphy = aphy->phy;
950 unsigned long flags;
951
952 spin_lock_irqsave(&phy->lock, flags);
953
954 if (enable) {
955
956 if (!phy->enable)
957 sphy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
958 hisi_hba->hw->phy_start(hisi_hba, phy_no);
959 } else {
960 sphy->negotiated_linkrate = SAS_PHY_DISABLED;
961 hisi_hba->hw->phy_disable(hisi_hba, phy_no);
962 }
963 phy->enable = enable;
964 spin_unlock_irqrestore(&phy->lock, flags);
965}
966EXPORT_SYMBOL_GPL(hisi_sas_phy_enable);
967
968static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy)
969{
970 struct sas_ha_struct *sas_ha = sas_phy->ha;
971 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
972 struct hisi_sas_phy *phy = sas_phy->lldd_phy;
973 struct asd_sas_port *sas_port = sas_phy->port;
974 struct hisi_sas_port *port;
975 unsigned long flags;
976
977 if (!sas_port)
978 return;
979
980 port = to_hisi_sas_port(sas_port);
981 spin_lock_irqsave(&hisi_hba->lock, flags);
982 port->port_attached = 1;
983 port->id = phy->port_id;
984 phy->port = port;
985 sas_port->lldd_port = port;
986 spin_unlock_irqrestore(&hisi_hba->lock, flags);
987}
988
989static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, struct sas_task *task,
990 struct hisi_sas_slot *slot)
991{
992 if (task) {
993 unsigned long flags;
994 struct task_status_struct *ts;
995
996 ts = &task->task_status;
997
998 ts->resp = SAS_TASK_COMPLETE;
999 ts->stat = SAS_ABORTED_TASK;
1000 spin_lock_irqsave(&task->task_state_lock, flags);
1001 task->task_state_flags &=
1002 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1003 if (!slot->is_internal && task->task_proto != SAS_PROTOCOL_SMP)
1004 task->task_state_flags |= SAS_TASK_STATE_DONE;
1005 spin_unlock_irqrestore(&task->task_state_lock, flags);
1006 }
1007
1008 hisi_sas_slot_task_free(hisi_hba, task, slot);
1009}
1010
1011static void hisi_sas_release_task(struct hisi_hba *hisi_hba,
1012 struct domain_device *device)
1013{
1014 struct hisi_sas_slot *slot, *slot2;
1015 struct hisi_sas_device *sas_dev = device->lldd_dev;
1016
1017 list_for_each_entry_safe(slot, slot2, &sas_dev->list, entry)
1018 hisi_sas_do_release_task(hisi_hba, slot->task, slot);
1019}
1020
1021void hisi_sas_release_tasks(struct hisi_hba *hisi_hba)
1022{
1023 struct hisi_sas_device *sas_dev;
1024 struct domain_device *device;
1025 int i;
1026
1027 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1028 sas_dev = &hisi_hba->devices[i];
1029 device = sas_dev->sas_device;
1030
1031 if ((sas_dev->dev_type == SAS_PHY_UNUSED) ||
1032 !device)
1033 continue;
1034
1035 hisi_sas_release_task(hisi_hba, device);
1036 }
1037}
1038EXPORT_SYMBOL_GPL(hisi_sas_release_tasks);
1039
1040static void hisi_sas_dereg_device(struct hisi_hba *hisi_hba,
1041 struct domain_device *device)
1042{
1043 if (hisi_hba->hw->dereg_device)
1044 hisi_hba->hw->dereg_device(hisi_hba, device);
1045}
1046
1047static void hisi_sas_dev_gone(struct domain_device *device)
1048{
1049 struct hisi_sas_device *sas_dev = device->lldd_dev;
1050 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1051 struct device *dev = hisi_hba->dev;
1052 int ret = 0;
1053
1054 dev_info(dev, "dev[%d:%x] is gone\n",
1055 sas_dev->device_id, sas_dev->dev_type);
1056
1057 down(&hisi_hba->sem);
1058 if (!test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)) {
1059 hisi_sas_internal_task_abort(hisi_hba, device,
1060 HISI_SAS_INT_ABT_DEV, 0);
1061
1062 hisi_sas_dereg_device(hisi_hba, device);
1063
1064 ret = hisi_hba->hw->clear_itct(hisi_hba, sas_dev);
1065 device->lldd_dev = NULL;
1066 }
1067
1068 if (hisi_hba->hw->free_device)
1069 hisi_hba->hw->free_device(sas_dev);
1070
1071
1072 if (!ret)
1073 sas_dev->dev_type = SAS_PHY_UNUSED;
1074 sas_dev->sas_device = NULL;
1075 up(&hisi_hba->sem);
1076}
1077
1078static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
1079{
1080 return hisi_sas_task_exec(task, gfp_flags, 0, NULL);
1081}
1082
1083static int hisi_sas_phy_set_linkrate(struct hisi_hba *hisi_hba, int phy_no,
1084 struct sas_phy_linkrates *r)
1085{
1086 struct sas_phy_linkrates _r;
1087
1088 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1089 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1090 enum sas_linkrate min, max;
1091
1092 if (r->minimum_linkrate > SAS_LINK_RATE_1_5_GBPS)
1093 return -EINVAL;
1094
1095 if (r->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) {
1096 max = sas_phy->phy->maximum_linkrate;
1097 min = r->minimum_linkrate;
1098 } else if (r->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) {
1099 max = r->maximum_linkrate;
1100 min = sas_phy->phy->minimum_linkrate;
1101 } else
1102 return -EINVAL;
1103
1104 _r.maximum_linkrate = max;
1105 _r.minimum_linkrate = min;
1106
1107 sas_phy->phy->maximum_linkrate = max;
1108 sas_phy->phy->minimum_linkrate = min;
1109
1110 hisi_sas_phy_enable(hisi_hba, phy_no, 0);
1111 msleep(100);
1112 hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, &_r);
1113 hisi_sas_phy_enable(hisi_hba, phy_no, 1);
1114
1115 return 0;
1116}
1117
1118static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
1119 void *funcdata)
1120{
1121 struct sas_ha_struct *sas_ha = sas_phy->ha;
1122 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
1123 int phy_no = sas_phy->id;
1124
1125 switch (func) {
1126 case PHY_FUNC_HARD_RESET:
1127 hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no);
1128 break;
1129
1130 case PHY_FUNC_LINK_RESET:
1131 hisi_sas_phy_enable(hisi_hba, phy_no, 0);
1132 msleep(100);
1133 hisi_sas_phy_enable(hisi_hba, phy_no, 1);
1134 break;
1135
1136 case PHY_FUNC_DISABLE:
1137 hisi_sas_phy_enable(hisi_hba, phy_no, 0);
1138 break;
1139
1140 case PHY_FUNC_SET_LINK_RATE:
1141 return hisi_sas_phy_set_linkrate(hisi_hba, phy_no, funcdata);
1142 case PHY_FUNC_GET_EVENTS:
1143 if (hisi_hba->hw->get_events) {
1144 hisi_hba->hw->get_events(hisi_hba, phy_no);
1145 break;
1146 }
1147 fallthrough;
1148 case PHY_FUNC_RELEASE_SPINUP_HOLD:
1149 default:
1150 return -EOPNOTSUPP;
1151 }
1152 return 0;
1153}
1154
1155static void hisi_sas_task_done(struct sas_task *task)
1156{
1157 del_timer(&task->slow_task->timer);
1158 complete(&task->slow_task->completion);
1159}
1160
1161static void hisi_sas_tmf_timedout(struct timer_list *t)
1162{
1163 struct sas_task_slow *slow = from_timer(slow, t, timer);
1164 struct sas_task *task = slow->task;
1165 unsigned long flags;
1166 bool is_completed = true;
1167
1168 spin_lock_irqsave(&task->task_state_lock, flags);
1169 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1170 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1171 is_completed = false;
1172 }
1173 spin_unlock_irqrestore(&task->task_state_lock, flags);
1174
1175 if (!is_completed)
1176 complete(&task->slow_task->completion);
1177}
1178
1179#define TASK_TIMEOUT 20
1180#define TASK_RETRY 3
1181#define INTERNAL_ABORT_TIMEOUT 6
1182static int hisi_sas_exec_internal_tmf_task(struct domain_device *device,
1183 void *parameter, u32 para_len,
1184 struct hisi_sas_tmf_task *tmf)
1185{
1186 struct hisi_sas_device *sas_dev = device->lldd_dev;
1187 struct hisi_hba *hisi_hba = sas_dev->hisi_hba;
1188 struct device *dev = hisi_hba->dev;
1189 struct sas_task *task;
1190 int res, retry;
1191
1192 for (retry = 0; retry < TASK_RETRY; retry++) {
1193 task = sas_alloc_slow_task(GFP_KERNEL);
1194 if (!task)
1195 return -ENOMEM;
1196
1197 task->dev = device;
1198 task->task_proto = device->tproto;
1199
1200 if (dev_is_sata(device)) {
1201 task->ata_task.device_control_reg_update = 1;
1202 memcpy(&task->ata_task.fis, parameter, para_len);
1203 } else {
1204 memcpy(&task->ssp_task, parameter, para_len);
1205 }
1206 task->task_done = hisi_sas_task_done;
1207
1208 task->slow_task->timer.function = hisi_sas_tmf_timedout;
1209 task->slow_task->timer.expires = jiffies + TASK_TIMEOUT * HZ;
1210 add_timer(&task->slow_task->timer);
1211
1212 res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf);
1213
1214 if (res) {
1215 del_timer(&task->slow_task->timer);
1216 dev_err(dev, "abort tmf: executing internal task failed: %d\n",
1217 res);
1218 goto ex_err;
1219 }
1220
1221 wait_for_completion(&task->slow_task->completion);
1222 res = TMF_RESP_FUNC_FAILED;
1223
1224 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1225 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1226 struct hisi_sas_slot *slot = task->lldd_task;
1227
1228 dev_err(dev, "abort tmf: TMF task timeout and not done\n");
1229 if (slot) {
1230 struct hisi_sas_cq *cq =
1231 &hisi_hba->cq[slot->dlvry_queue];
1232
1233
1234
1235
1236 synchronize_irq(cq->irq_no);
1237 slot->task = NULL;
1238 }
1239
1240 goto ex_err;
1241 } else
1242 dev_err(dev, "abort tmf: TMF task timeout\n");
1243 }
1244
1245 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1246 task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
1247 res = TMF_RESP_FUNC_COMPLETE;
1248 break;
1249 }
1250
1251 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1252 task->task_status.stat == TMF_RESP_FUNC_SUCC) {
1253 res = TMF_RESP_FUNC_SUCC;
1254 break;
1255 }
1256
1257 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1258 task->task_status.stat == SAS_DATA_UNDERRUN) {
1259
1260
1261
1262 dev_warn(dev, "abort tmf: task to dev %016llx resp: 0x%x sts 0x%x underrun\n",
1263 SAS_ADDR(device->sas_addr),
1264 task->task_status.resp,
1265 task->task_status.stat);
1266 res = task->task_status.residual;
1267 break;
1268 }
1269
1270 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1271 task->task_status.stat == SAS_DATA_OVERRUN) {
1272 dev_warn(dev, "abort tmf: blocked task error\n");
1273 res = -EMSGSIZE;
1274 break;
1275 }
1276
1277 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1278 task->task_status.stat == SAS_OPEN_REJECT) {
1279 dev_warn(dev, "abort tmf: open reject failed\n");
1280 res = -EIO;
1281 } else {
1282 dev_warn(dev, "abort tmf: task to dev %016llx resp: 0x%x status 0x%x\n",
1283 SAS_ADDR(device->sas_addr),
1284 task->task_status.resp,
1285 task->task_status.stat);
1286 }
1287 sas_free_task(task);
1288 task = NULL;
1289 }
1290ex_err:
1291 if (retry == TASK_RETRY)
1292 dev_warn(dev, "abort tmf: executing internal task failed!\n");
1293 sas_free_task(task);
1294 return res;
1295}
1296
1297static void hisi_sas_fill_ata_reset_cmd(struct ata_device *dev,
1298 bool reset, int pmp, u8 *fis)
1299{
1300 struct ata_taskfile tf;
1301
1302 ata_tf_init(dev, &tf);
1303 if (reset)
1304 tf.ctl |= ATA_SRST;
1305 else
1306 tf.ctl &= ~ATA_SRST;
1307 tf.command = ATA_CMD_DEV_RESET;
1308 ata_tf_to_fis(&tf, pmp, 0, fis);
1309}
1310
1311static int hisi_sas_softreset_ata_disk(struct domain_device *device)
1312{
1313 u8 fis[20] = {0};
1314 struct ata_port *ap = device->sata_dev.ap;
1315 struct ata_link *link;
1316 int rc = TMF_RESP_FUNC_FAILED;
1317 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1318 struct device *dev = hisi_hba->dev;
1319 int s = sizeof(struct host_to_dev_fis);
1320
1321 ata_for_each_link(link, ap, EDGE) {
1322 int pmp = sata_srst_pmp(link);
1323
1324 hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis);
1325 rc = hisi_sas_exec_internal_tmf_task(device, fis, s, NULL);
1326 if (rc != TMF_RESP_FUNC_COMPLETE)
1327 break;
1328 }
1329
1330 if (rc == TMF_RESP_FUNC_COMPLETE) {
1331 ata_for_each_link(link, ap, EDGE) {
1332 int pmp = sata_srst_pmp(link);
1333
1334 hisi_sas_fill_ata_reset_cmd(link->device, 0, pmp, fis);
1335 rc = hisi_sas_exec_internal_tmf_task(device, fis,
1336 s, NULL);
1337 if (rc != TMF_RESP_FUNC_COMPLETE)
1338 dev_err(dev, "ata disk de-reset failed\n");
1339 }
1340 } else {
1341 dev_err(dev, "ata disk reset failed\n");
1342 }
1343
1344 if (rc == TMF_RESP_FUNC_COMPLETE)
1345 hisi_sas_release_task(hisi_hba, device);
1346
1347 return rc;
1348}
1349
1350static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device,
1351 u8 *lun, struct hisi_sas_tmf_task *tmf)
1352{
1353 struct sas_ssp_task ssp_task;
1354
1355 if (!(device->tproto & SAS_PROTOCOL_SSP))
1356 return TMF_RESP_FUNC_ESUPP;
1357
1358 memcpy(ssp_task.LUN, lun, 8);
1359
1360 return hisi_sas_exec_internal_tmf_task(device, &ssp_task,
1361 sizeof(ssp_task), tmf);
1362}
1363
1364static void hisi_sas_refresh_port_id(struct hisi_hba *hisi_hba)
1365{
1366 u32 state = hisi_hba->hw->get_phys_state(hisi_hba);
1367 int i;
1368
1369 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1370 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
1371 struct domain_device *device = sas_dev->sas_device;
1372 struct asd_sas_port *sas_port;
1373 struct hisi_sas_port *port;
1374 struct hisi_sas_phy *phy = NULL;
1375 struct asd_sas_phy *sas_phy;
1376
1377 if ((sas_dev->dev_type == SAS_PHY_UNUSED)
1378 || !device || !device->port)
1379 continue;
1380
1381 sas_port = device->port;
1382 port = to_hisi_sas_port(sas_port);
1383
1384 list_for_each_entry(sas_phy, &sas_port->phy_list, port_phy_el)
1385 if (state & BIT(sas_phy->id)) {
1386 phy = sas_phy->lldd_phy;
1387 break;
1388 }
1389
1390 if (phy) {
1391 port->id = phy->port_id;
1392
1393
1394 if (!device->parent)
1395 device->linkrate = phy->sas_phy.linkrate;
1396
1397 hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
1398 } else
1399 port->id = 0xff;
1400 }
1401}
1402
1403static void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 state)
1404{
1405 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
1406 struct asd_sas_port *_sas_port = NULL;
1407 int phy_no;
1408
1409 for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) {
1410 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1411 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1412 struct asd_sas_port *sas_port = sas_phy->port;
1413 bool do_port_check = _sas_port != sas_port;
1414
1415 if (!sas_phy->phy->enabled)
1416 continue;
1417
1418
1419 if (state & BIT(phy_no)) {
1420 if (do_port_check && sas_port && sas_port->port_dev) {
1421 struct domain_device *dev = sas_port->port_dev;
1422
1423 _sas_port = sas_port;
1424
1425 if (dev_is_expander(dev->dev_type))
1426 sas_ha->notify_port_event(sas_phy,
1427 PORTE_BROADCAST_RCVD);
1428 }
1429 } else {
1430 hisi_sas_phy_down(hisi_hba, phy_no, 0);
1431 }
1432
1433 }
1434}
1435
1436static void hisi_sas_reset_init_all_devices(struct hisi_hba *hisi_hba)
1437{
1438 struct hisi_sas_device *sas_dev;
1439 struct domain_device *device;
1440 int i;
1441
1442 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1443 sas_dev = &hisi_hba->devices[i];
1444 device = sas_dev->sas_device;
1445
1446 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device)
1447 continue;
1448
1449 hisi_sas_init_device(device);
1450 }
1451}
1452
1453static void hisi_sas_send_ata_reset_each_phy(struct hisi_hba *hisi_hba,
1454 struct asd_sas_port *sas_port,
1455 struct domain_device *device)
1456{
1457 struct hisi_sas_tmf_task tmf_task = { .force_phy = 1 };
1458 struct ata_port *ap = device->sata_dev.ap;
1459 struct device *dev = hisi_hba->dev;
1460 int s = sizeof(struct host_to_dev_fis);
1461 int rc = TMF_RESP_FUNC_FAILED;
1462 struct asd_sas_phy *sas_phy;
1463 struct ata_link *link;
1464 u8 fis[20] = {0};
1465 u32 state;
1466
1467 state = hisi_hba->hw->get_phys_state(hisi_hba);
1468 list_for_each_entry(sas_phy, &sas_port->phy_list, port_phy_el) {
1469 if (!(state & BIT(sas_phy->id)))
1470 continue;
1471
1472 ata_for_each_link(link, ap, EDGE) {
1473 int pmp = sata_srst_pmp(link);
1474
1475 tmf_task.phy_id = sas_phy->id;
1476 hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis);
1477 rc = hisi_sas_exec_internal_tmf_task(device, fis, s,
1478 &tmf_task);
1479 if (rc != TMF_RESP_FUNC_COMPLETE) {
1480 dev_err(dev, "phy%d ata reset failed rc=%d\n",
1481 sas_phy->id, rc);
1482 break;
1483 }
1484 }
1485 }
1486}
1487
1488static void hisi_sas_terminate_stp_reject(struct hisi_hba *hisi_hba)
1489{
1490 struct device *dev = hisi_hba->dev;
1491 int port_no, rc, i;
1492
1493 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1494 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
1495 struct domain_device *device = sas_dev->sas_device;
1496
1497 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device)
1498 continue;
1499
1500 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1501 HISI_SAS_INT_ABT_DEV, 0);
1502 if (rc < 0)
1503 dev_err(dev, "STP reject: abort dev failed %d\n", rc);
1504 }
1505
1506 for (port_no = 0; port_no < hisi_hba->n_phy; port_no++) {
1507 struct hisi_sas_port *port = &hisi_hba->port[port_no];
1508 struct asd_sas_port *sas_port = &port->sas_port;
1509 struct domain_device *port_dev = sas_port->port_dev;
1510 struct domain_device *device;
1511
1512 if (!port_dev || !dev_is_expander(port_dev->dev_type))
1513 continue;
1514
1515
1516 list_for_each_entry(device, &sas_port->dev_list,
1517 dev_list_node) {
1518 if (dev_is_sata(device)) {
1519 hisi_sas_send_ata_reset_each_phy(hisi_hba,
1520 sas_port,
1521 device);
1522 break;
1523 }
1524 }
1525 }
1526}
1527
1528void hisi_sas_controller_reset_prepare(struct hisi_hba *hisi_hba)
1529{
1530 struct Scsi_Host *shost = hisi_hba->shost;
1531
1532 down(&hisi_hba->sem);
1533 hisi_hba->phy_state = hisi_hba->hw->get_phys_state(hisi_hba);
1534
1535 scsi_block_requests(shost);
1536 hisi_hba->hw->wait_cmds_complete_timeout(hisi_hba, 100, 5000);
1537
1538 if (timer_pending(&hisi_hba->timer))
1539 del_timer_sync(&hisi_hba->timer);
1540
1541 set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1542}
1543EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_prepare);
1544
1545void hisi_sas_controller_reset_done(struct hisi_hba *hisi_hba)
1546{
1547 struct Scsi_Host *shost = hisi_hba->shost;
1548 u32 state;
1549
1550
1551 hisi_hba->hw->phys_init(hisi_hba);
1552 msleep(1000);
1553 hisi_sas_refresh_port_id(hisi_hba);
1554 clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1555
1556 if (hisi_hba->reject_stp_links_msk)
1557 hisi_sas_terminate_stp_reject(hisi_hba);
1558 hisi_sas_reset_init_all_devices(hisi_hba);
1559 up(&hisi_hba->sem);
1560 scsi_unblock_requests(shost);
1561 clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags);
1562
1563 state = hisi_hba->hw->get_phys_state(hisi_hba);
1564 hisi_sas_rescan_topology(hisi_hba, state);
1565}
1566EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_done);
1567
1568static int hisi_sas_controller_reset(struct hisi_hba *hisi_hba)
1569{
1570 struct device *dev = hisi_hba->dev;
1571 struct Scsi_Host *shost = hisi_hba->shost;
1572 int rc;
1573
1574 if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct[0].itct)
1575 queue_work(hisi_hba->wq, &hisi_hba->debugfs_work);
1576
1577 if (!hisi_hba->hw->soft_reset)
1578 return -1;
1579
1580 if (test_and_set_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags))
1581 return -1;
1582
1583 dev_info(dev, "controller resetting...\n");
1584 hisi_sas_controller_reset_prepare(hisi_hba);
1585
1586 rc = hisi_hba->hw->soft_reset(hisi_hba);
1587 if (rc) {
1588 dev_warn(dev, "controller reset failed (%d)\n", rc);
1589 clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1590 up(&hisi_hba->sem);
1591 scsi_unblock_requests(shost);
1592 clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags);
1593 return rc;
1594 }
1595
1596 hisi_sas_controller_reset_done(hisi_hba);
1597 dev_info(dev, "controller reset complete\n");
1598
1599 return 0;
1600}
1601
1602static int hisi_sas_abort_task(struct sas_task *task)
1603{
1604 struct scsi_lun lun;
1605 struct hisi_sas_tmf_task tmf_task;
1606 struct domain_device *device = task->dev;
1607 struct hisi_sas_device *sas_dev = device->lldd_dev;
1608 struct hisi_hba *hisi_hba;
1609 struct device *dev;
1610 int rc = TMF_RESP_FUNC_FAILED;
1611 unsigned long flags;
1612
1613 if (!sas_dev)
1614 return TMF_RESP_FUNC_FAILED;
1615
1616 hisi_hba = dev_to_hisi_hba(task->dev);
1617 dev = hisi_hba->dev;
1618
1619 spin_lock_irqsave(&task->task_state_lock, flags);
1620 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1621 struct hisi_sas_slot *slot = task->lldd_task;
1622 struct hisi_sas_cq *cq;
1623
1624 if (slot) {
1625
1626
1627
1628
1629 cq = &hisi_hba->cq[slot->dlvry_queue];
1630 synchronize_irq(cq->irq_no);
1631 }
1632 spin_unlock_irqrestore(&task->task_state_lock, flags);
1633 rc = TMF_RESP_FUNC_COMPLETE;
1634 goto out;
1635 }
1636 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1637 spin_unlock_irqrestore(&task->task_state_lock, flags);
1638
1639 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1640 struct scsi_cmnd *cmnd = task->uldd_task;
1641 struct hisi_sas_slot *slot = task->lldd_task;
1642 u16 tag = slot->idx;
1643 int rc2;
1644
1645 int_to_scsilun(cmnd->device->lun, &lun);
1646 tmf_task.tmf = TMF_ABORT_TASK;
1647 tmf_task.tag_of_task_to_be_managed = tag;
1648
1649 rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun,
1650 &tmf_task);
1651
1652 rc2 = hisi_sas_internal_task_abort(hisi_hba, device,
1653 HISI_SAS_INT_ABT_CMD, tag);
1654 if (rc2 < 0) {
1655 dev_err(dev, "abort task: internal abort (%d)\n", rc2);
1656 return TMF_RESP_FUNC_FAILED;
1657 }
1658
1659
1660
1661
1662
1663
1664
1665
1666 if (rc == TMF_RESP_FUNC_COMPLETE && rc2 != TMF_RESP_FUNC_SUCC) {
1667 if (task->lldd_task)
1668 hisi_sas_do_release_task(hisi_hba, task, slot);
1669 }
1670 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1671 task->task_proto & SAS_PROTOCOL_STP) {
1672 if (task->dev->dev_type == SAS_SATA_DEV) {
1673 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1674 HISI_SAS_INT_ABT_DEV,
1675 0);
1676 if (rc < 0) {
1677 dev_err(dev, "abort task: internal abort failed\n");
1678 goto out;
1679 }
1680 hisi_sas_dereg_device(hisi_hba, device);
1681 rc = hisi_sas_softreset_ata_disk(device);
1682 }
1683 } else if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SMP) {
1684
1685 struct hisi_sas_slot *slot = task->lldd_task;
1686 u32 tag = slot->idx;
1687 struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue];
1688
1689 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1690 HISI_SAS_INT_ABT_CMD, tag);
1691 if (((rc < 0) || (rc == TMF_RESP_FUNC_FAILED)) &&
1692 task->lldd_task) {
1693
1694
1695
1696
1697 synchronize_irq(cq->irq_no);
1698 slot->task = NULL;
1699 }
1700 }
1701
1702out:
1703 if (rc != TMF_RESP_FUNC_COMPLETE)
1704 dev_notice(dev, "abort task: rc=%d\n", rc);
1705 return rc;
1706}
1707
1708static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun)
1709{
1710 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1711 struct device *dev = hisi_hba->dev;
1712 struct hisi_sas_tmf_task tmf_task;
1713 int rc;
1714
1715 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1716 HISI_SAS_INT_ABT_DEV, 0);
1717 if (rc < 0) {
1718 dev_err(dev, "abort task set: internal abort rc=%d\n", rc);
1719 return TMF_RESP_FUNC_FAILED;
1720 }
1721 hisi_sas_dereg_device(hisi_hba, device);
1722
1723 tmf_task.tmf = TMF_ABORT_TASK_SET;
1724 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1725
1726 if (rc == TMF_RESP_FUNC_COMPLETE)
1727 hisi_sas_release_task(hisi_hba, device);
1728
1729 return rc;
1730}
1731
1732static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun)
1733{
1734 struct hisi_sas_tmf_task tmf_task;
1735 int rc;
1736
1737 tmf_task.tmf = TMF_CLEAR_ACA;
1738 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1739
1740 return rc;
1741}
1742
1743static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device)
1744{
1745 struct sas_phy *local_phy = sas_get_local_phy(device);
1746 struct hisi_sas_device *sas_dev = device->lldd_dev;
1747 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1748 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
1749 DECLARE_COMPLETION_ONSTACK(phyreset);
1750 int rc, reset_type;
1751
1752 if (!local_phy->enabled) {
1753 sas_put_local_phy(local_phy);
1754 return -ENODEV;
1755 }
1756
1757 if (scsi_is_sas_phy_local(local_phy)) {
1758 struct asd_sas_phy *sas_phy =
1759 sas_ha->sas_phy[local_phy->number];
1760 struct hisi_sas_phy *phy =
1761 container_of(sas_phy, struct hisi_sas_phy, sas_phy);
1762 phy->in_reset = 1;
1763 phy->reset_completion = &phyreset;
1764 }
1765
1766 reset_type = (sas_dev->dev_status == HISI_SAS_DEV_INIT ||
1767 !dev_is_sata(device)) ? true : false;
1768
1769 rc = sas_phy_reset(local_phy, reset_type);
1770 sas_put_local_phy(local_phy);
1771
1772 if (scsi_is_sas_phy_local(local_phy)) {
1773 struct asd_sas_phy *sas_phy =
1774 sas_ha->sas_phy[local_phy->number];
1775 struct hisi_sas_phy *phy =
1776 container_of(sas_phy, struct hisi_sas_phy, sas_phy);
1777 int ret = wait_for_completion_timeout(&phyreset, 2 * HZ);
1778 unsigned long flags;
1779
1780 spin_lock_irqsave(&phy->lock, flags);
1781 phy->reset_completion = NULL;
1782 phy->in_reset = 0;
1783 spin_unlock_irqrestore(&phy->lock, flags);
1784
1785
1786 if (!ret)
1787 hisi_sas_phy_down(hisi_hba, sas_phy->id, 0);
1788 } else if (sas_dev->dev_status != HISI_SAS_DEV_INIT) {
1789
1790
1791
1792
1793 if (!rc)
1794 msleep(2000);
1795 }
1796
1797 return rc;
1798}
1799
1800static int hisi_sas_I_T_nexus_reset(struct domain_device *device)
1801{
1802 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1803 struct device *dev = hisi_hba->dev;
1804 int rc;
1805
1806 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1807 HISI_SAS_INT_ABT_DEV, 0);
1808 if (rc < 0) {
1809 dev_err(dev, "I_T nexus reset: internal abort (%d)\n", rc);
1810 return TMF_RESP_FUNC_FAILED;
1811 }
1812 hisi_sas_dereg_device(hisi_hba, device);
1813
1814 if (dev_is_sata(device)) {
1815 rc = hisi_sas_softreset_ata_disk(device);
1816 if (rc == TMF_RESP_FUNC_FAILED)
1817 return TMF_RESP_FUNC_FAILED;
1818 }
1819
1820 rc = hisi_sas_debug_I_T_nexus_reset(device);
1821
1822 if ((rc == TMF_RESP_FUNC_COMPLETE) || (rc == -ENODEV))
1823 hisi_sas_release_task(hisi_hba, device);
1824
1825 return rc;
1826}
1827
1828static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun)
1829{
1830 struct hisi_sas_device *sas_dev = device->lldd_dev;
1831 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1832 struct device *dev = hisi_hba->dev;
1833 int rc = TMF_RESP_FUNC_FAILED;
1834
1835
1836 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1837 HISI_SAS_INT_ABT_DEV, 0);
1838 if (rc < 0) {
1839 dev_err(dev, "lu_reset: internal abort failed\n");
1840 goto out;
1841 }
1842 hisi_sas_dereg_device(hisi_hba, device);
1843
1844 if (dev_is_sata(device)) {
1845 struct sas_phy *phy;
1846
1847 phy = sas_get_local_phy(device);
1848
1849 rc = sas_phy_reset(phy, true);
1850
1851 if (rc == 0)
1852 hisi_sas_release_task(hisi_hba, device);
1853 sas_put_local_phy(phy);
1854 } else {
1855 struct hisi_sas_tmf_task tmf_task = { .tmf = TMF_LU_RESET };
1856
1857 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1858 if (rc == TMF_RESP_FUNC_COMPLETE)
1859 hisi_sas_release_task(hisi_hba, device);
1860 }
1861out:
1862 if (rc != TMF_RESP_FUNC_COMPLETE)
1863 dev_err(dev, "lu_reset: for device[%d]:rc= %d\n",
1864 sas_dev->device_id, rc);
1865 return rc;
1866}
1867
1868static int hisi_sas_clear_nexus_ha(struct sas_ha_struct *sas_ha)
1869{
1870 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
1871 struct device *dev = hisi_hba->dev;
1872 HISI_SAS_DECLARE_RST_WORK_ON_STACK(r);
1873 int rc, i;
1874
1875 queue_work(hisi_hba->wq, &r.work);
1876 wait_for_completion(r.completion);
1877 if (!r.done)
1878 return TMF_RESP_FUNC_FAILED;
1879
1880 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1881 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
1882 struct domain_device *device = sas_dev->sas_device;
1883
1884 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device ||
1885 dev_is_expander(device->dev_type))
1886 continue;
1887
1888 rc = hisi_sas_debug_I_T_nexus_reset(device);
1889 if (rc != TMF_RESP_FUNC_COMPLETE)
1890 dev_info(dev, "clear nexus ha: for device[%d] rc=%d\n",
1891 sas_dev->device_id, rc);
1892 }
1893
1894 hisi_sas_release_tasks(hisi_hba);
1895
1896 return TMF_RESP_FUNC_COMPLETE;
1897}
1898
1899static int hisi_sas_query_task(struct sas_task *task)
1900{
1901 struct scsi_lun lun;
1902 struct hisi_sas_tmf_task tmf_task;
1903 int rc = TMF_RESP_FUNC_FAILED;
1904
1905 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1906 struct scsi_cmnd *cmnd = task->uldd_task;
1907 struct domain_device *device = task->dev;
1908 struct hisi_sas_slot *slot = task->lldd_task;
1909 u32 tag = slot->idx;
1910
1911 int_to_scsilun(cmnd->device->lun, &lun);
1912 tmf_task.tmf = TMF_QUERY_TASK;
1913 tmf_task.tag_of_task_to_be_managed = tag;
1914
1915 rc = hisi_sas_debug_issue_ssp_tmf(device,
1916 lun.scsi_lun,
1917 &tmf_task);
1918 switch (rc) {
1919
1920 case TMF_RESP_FUNC_SUCC:
1921
1922 case TMF_RESP_FUNC_FAILED:
1923 case TMF_RESP_FUNC_COMPLETE:
1924 break;
1925 default:
1926 rc = TMF_RESP_FUNC_FAILED;
1927 break;
1928 }
1929 }
1930 return rc;
1931}
1932
1933static int
1934hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id,
1935 struct sas_task *task, int abort_flag,
1936 int task_tag, struct hisi_sas_dq *dq)
1937{
1938 struct domain_device *device = task->dev;
1939 struct hisi_sas_device *sas_dev = device->lldd_dev;
1940 struct device *dev = hisi_hba->dev;
1941 struct hisi_sas_port *port;
1942 struct hisi_sas_slot *slot;
1943 struct asd_sas_port *sas_port = device->port;
1944 struct hisi_sas_cmd_hdr *cmd_hdr_base;
1945 int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx;
1946 unsigned long flags;
1947 int wr_q_index;
1948
1949 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags)))
1950 return -EINVAL;
1951
1952 if (!device->port)
1953 return -1;
1954
1955 port = to_hisi_sas_port(sas_port);
1956
1957
1958 rc = hisi_sas_slot_index_alloc(hisi_hba, NULL);
1959 if (rc < 0)
1960 goto err_out;
1961
1962 slot_idx = rc;
1963 slot = &hisi_hba->slot_info[slot_idx];
1964
1965 spin_lock(&dq->lock);
1966 wr_q_index = dq->wr_point;
1967 dq->wr_point = (dq->wr_point + 1) % HISI_SAS_QUEUE_SLOTS;
1968 list_add_tail(&slot->delivery, &dq->list);
1969 spin_unlock(&dq->lock);
1970 spin_lock(&sas_dev->lock);
1971 list_add_tail(&slot->entry, &sas_dev->list);
1972 spin_unlock(&sas_dev->lock);
1973
1974 dlvry_queue = dq->id;
1975 dlvry_queue_slot = wr_q_index;
1976
1977 slot->device_id = sas_dev->device_id;
1978 slot->n_elem = n_elem;
1979 slot->dlvry_queue = dlvry_queue;
1980 slot->dlvry_queue_slot = dlvry_queue_slot;
1981 cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
1982 slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
1983 slot->task = task;
1984 slot->port = port;
1985 slot->is_internal = true;
1986 task->lldd_task = slot;
1987
1988 memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
1989 memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ);
1990 memset(hisi_sas_status_buf_addr_mem(slot), 0,
1991 sizeof(struct hisi_sas_err_record));
1992
1993 hisi_sas_task_prep_abort(hisi_hba, slot, device_id,
1994 abort_flag, task_tag);
1995
1996 spin_lock_irqsave(&task->task_state_lock, flags);
1997 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
1998 spin_unlock_irqrestore(&task->task_state_lock, flags);
1999 WRITE_ONCE(slot->ready, 1);
2000
2001 spin_lock(&dq->lock);
2002 hisi_hba->hw->start_delivery(dq);
2003 spin_unlock(&dq->lock);
2004
2005 return 0;
2006
2007err_out:
2008 dev_err(dev, "internal abort task prep: failed[%d]!\n", rc);
2009
2010 return rc;
2011}
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023static int
2024_hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
2025 struct domain_device *device, int abort_flag,
2026 int tag, struct hisi_sas_dq *dq)
2027{
2028 struct sas_task *task;
2029 struct hisi_sas_device *sas_dev = device->lldd_dev;
2030 struct device *dev = hisi_hba->dev;
2031 int res;
2032
2033
2034
2035
2036
2037
2038
2039 if (!hisi_hba->hw->prep_abort)
2040 return TMF_RESP_FUNC_FAILED;
2041
2042 task = sas_alloc_slow_task(GFP_KERNEL);
2043 if (!task)
2044 return -ENOMEM;
2045
2046 task->dev = device;
2047 task->task_proto = device->tproto;
2048 task->task_done = hisi_sas_task_done;
2049 task->slow_task->timer.function = hisi_sas_tmf_timedout;
2050 task->slow_task->timer.expires = jiffies + INTERNAL_ABORT_TIMEOUT * HZ;
2051 add_timer(&task->slow_task->timer);
2052
2053 res = hisi_sas_internal_abort_task_exec(hisi_hba, sas_dev->device_id,
2054 task, abort_flag, tag, dq);
2055 if (res) {
2056 del_timer(&task->slow_task->timer);
2057 dev_err(dev, "internal task abort: executing internal task failed: %d\n",
2058 res);
2059 goto exit;
2060 }
2061 wait_for_completion(&task->slow_task->completion);
2062 res = TMF_RESP_FUNC_FAILED;
2063
2064
2065 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
2066 if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct[0].itct)
2067 queue_work(hisi_hba->wq, &hisi_hba->debugfs_work);
2068
2069 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
2070 struct hisi_sas_slot *slot = task->lldd_task;
2071
2072 if (slot) {
2073 struct hisi_sas_cq *cq =
2074 &hisi_hba->cq[slot->dlvry_queue];
2075
2076
2077
2078
2079 synchronize_irq(cq->irq_no);
2080 slot->task = NULL;
2081 }
2082 dev_err(dev, "internal task abort: timeout and not done.\n");
2083
2084 res = -EIO;
2085 goto exit;
2086 } else
2087 dev_err(dev, "internal task abort: timeout.\n");
2088 }
2089
2090 if (task->task_status.resp == SAS_TASK_COMPLETE &&
2091 task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
2092 res = TMF_RESP_FUNC_COMPLETE;
2093 goto exit;
2094 }
2095
2096 if (task->task_status.resp == SAS_TASK_COMPLETE &&
2097 task->task_status.stat == TMF_RESP_FUNC_SUCC) {
2098 res = TMF_RESP_FUNC_SUCC;
2099 goto exit;
2100 }
2101
2102exit:
2103 dev_dbg(dev, "internal task abort: task to dev %016llx task=%pK resp: 0x%x sts 0x%x\n",
2104 SAS_ADDR(device->sas_addr), task,
2105 task->task_status.resp,
2106 task->task_status.stat);
2107 sas_free_task(task);
2108
2109 return res;
2110}
2111
2112static int
2113hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
2114 struct domain_device *device,
2115 int abort_flag, int tag)
2116{
2117 struct hisi_sas_slot *slot;
2118 struct device *dev = hisi_hba->dev;
2119 struct hisi_sas_dq *dq;
2120 int i, rc;
2121
2122 switch (abort_flag) {
2123 case HISI_SAS_INT_ABT_CMD:
2124 slot = &hisi_hba->slot_info[tag];
2125 dq = &hisi_hba->dq[slot->dlvry_queue];
2126 return _hisi_sas_internal_task_abort(hisi_hba, device,
2127 abort_flag, tag, dq);
2128 case HISI_SAS_INT_ABT_DEV:
2129 for (i = 0; i < hisi_hba->cq_nvecs; i++) {
2130 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2131 const struct cpumask *mask = cq->irq_mask;
2132
2133 if (mask && !cpumask_intersects(cpu_online_mask, mask))
2134 continue;
2135 dq = &hisi_hba->dq[i];
2136 rc = _hisi_sas_internal_task_abort(hisi_hba, device,
2137 abort_flag, tag,
2138 dq);
2139 if (rc)
2140 return rc;
2141 }
2142 break;
2143 default:
2144 dev_err(dev, "Unrecognised internal abort flag (%d)\n",
2145 abort_flag);
2146 return -EINVAL;
2147 }
2148
2149 return 0;
2150}
2151
2152static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy)
2153{
2154 hisi_sas_port_notify_formed(sas_phy);
2155}
2156
2157static int hisi_sas_write_gpio(struct sas_ha_struct *sha, u8 reg_type,
2158 u8 reg_index, u8 reg_count, u8 *write_data)
2159{
2160 struct hisi_hba *hisi_hba = sha->lldd_ha;
2161
2162 if (!hisi_hba->hw->write_gpio)
2163 return -EOPNOTSUPP;
2164
2165 return hisi_hba->hw->write_gpio(hisi_hba, reg_type,
2166 reg_index, reg_count, write_data);
2167}
2168
2169static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy)
2170{
2171 struct asd_sas_phy *sas_phy = &phy->sas_phy;
2172 struct sas_phy *sphy = sas_phy->phy;
2173 unsigned long flags;
2174
2175 phy->phy_attached = 0;
2176 phy->phy_type = 0;
2177 phy->port = NULL;
2178
2179 spin_lock_irqsave(&phy->lock, flags);
2180 if (phy->enable)
2181 sphy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
2182 else
2183 sphy->negotiated_linkrate = SAS_PHY_DISABLED;
2184 spin_unlock_irqrestore(&phy->lock, flags);
2185}
2186
2187void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy)
2188{
2189 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
2190 struct asd_sas_phy *sas_phy = &phy->sas_phy;
2191 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
2192 struct device *dev = hisi_hba->dev;
2193
2194 if (rdy) {
2195
2196 hisi_sas_bytes_dmaed(hisi_hba, phy_no);
2197 hisi_sas_port_notify_formed(sas_phy);
2198 } else {
2199 struct hisi_sas_port *port = phy->port;
2200
2201 if (test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags) ||
2202 phy->in_reset) {
2203 dev_info(dev, "ignore flutter phy%d down\n", phy_no);
2204 return;
2205 }
2206
2207 sas_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL);
2208 sas_phy_disconnected(sas_phy);
2209
2210 if (port) {
2211 if (phy->phy_type & PORT_TYPE_SAS) {
2212 int port_id = port->id;
2213
2214 if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba,
2215 port_id))
2216 port->port_attached = 0;
2217 } else if (phy->phy_type & PORT_TYPE_SATA)
2218 port->port_attached = 0;
2219 }
2220 hisi_sas_phy_disconnected(phy);
2221 }
2222}
2223EXPORT_SYMBOL_GPL(hisi_sas_phy_down);
2224
2225void hisi_sas_sync_irqs(struct hisi_hba *hisi_hba)
2226{
2227 int i;
2228
2229 for (i = 0; i < hisi_hba->cq_nvecs; i++) {
2230 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2231
2232 synchronize_irq(cq->irq_no);
2233 }
2234}
2235EXPORT_SYMBOL_GPL(hisi_sas_sync_irqs);
2236
2237int hisi_sas_host_reset(struct Scsi_Host *shost, int reset_type)
2238{
2239 struct hisi_hba *hisi_hba = shost_priv(shost);
2240
2241 if (reset_type != SCSI_ADAPTER_RESET)
2242 return -EOPNOTSUPP;
2243
2244 queue_work(hisi_hba->wq, &hisi_hba->rst_work);
2245
2246 return 0;
2247}
2248EXPORT_SYMBOL_GPL(hisi_sas_host_reset);
2249
2250struct scsi_transport_template *hisi_sas_stt;
2251EXPORT_SYMBOL_GPL(hisi_sas_stt);
2252
2253static struct sas_domain_function_template hisi_sas_transport_ops = {
2254 .lldd_dev_found = hisi_sas_dev_found,
2255 .lldd_dev_gone = hisi_sas_dev_gone,
2256 .lldd_execute_task = hisi_sas_queue_command,
2257 .lldd_control_phy = hisi_sas_control_phy,
2258 .lldd_abort_task = hisi_sas_abort_task,
2259 .lldd_abort_task_set = hisi_sas_abort_task_set,
2260 .lldd_clear_aca = hisi_sas_clear_aca,
2261 .lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset,
2262 .lldd_lu_reset = hisi_sas_lu_reset,
2263 .lldd_query_task = hisi_sas_query_task,
2264 .lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha,
2265 .lldd_port_formed = hisi_sas_port_formed,
2266 .lldd_write_gpio = hisi_sas_write_gpio,
2267};
2268
2269void hisi_sas_init_mem(struct hisi_hba *hisi_hba)
2270{
2271 int i, s, j, max_command_entries = HISI_SAS_MAX_COMMANDS;
2272 struct hisi_sas_breakpoint *sata_breakpoint = hisi_hba->sata_breakpoint;
2273
2274 for (i = 0; i < hisi_hba->queue_count; i++) {
2275 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2276 struct hisi_sas_dq *dq = &hisi_hba->dq[i];
2277 struct hisi_sas_cmd_hdr *cmd_hdr = hisi_hba->cmd_hdr[i];
2278
2279 s = sizeof(struct hisi_sas_cmd_hdr);
2280 for (j = 0; j < HISI_SAS_QUEUE_SLOTS; j++)
2281 memset(&cmd_hdr[j], 0, s);
2282
2283 dq->wr_point = 0;
2284
2285 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
2286 memset(hisi_hba->complete_hdr[i], 0, s);
2287 cq->rd_point = 0;
2288 }
2289
2290 s = sizeof(struct hisi_sas_initial_fis) * hisi_hba->n_phy;
2291 memset(hisi_hba->initial_fis, 0, s);
2292
2293 s = max_command_entries * sizeof(struct hisi_sas_iost);
2294 memset(hisi_hba->iost, 0, s);
2295
2296 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
2297 memset(hisi_hba->breakpoint, 0, s);
2298
2299 s = sizeof(struct hisi_sas_sata_breakpoint);
2300 for (j = 0; j < HISI_SAS_MAX_ITCT_ENTRIES; j++)
2301 memset(&sata_breakpoint[j], 0, s);
2302}
2303EXPORT_SYMBOL_GPL(hisi_sas_init_mem);
2304
2305int hisi_sas_alloc(struct hisi_hba *hisi_hba)
2306{
2307 struct device *dev = hisi_hba->dev;
2308 int i, j, s, max_command_entries = HISI_SAS_MAX_COMMANDS;
2309 int max_command_entries_ru, sz_slot_buf_ru;
2310 int blk_cnt, slots_per_blk;
2311
2312 sema_init(&hisi_hba->sem, 1);
2313 spin_lock_init(&hisi_hba->lock);
2314 for (i = 0; i < hisi_hba->n_phy; i++) {
2315 hisi_sas_phy_init(hisi_hba, i);
2316 hisi_hba->port[i].port_attached = 0;
2317 hisi_hba->port[i].id = -1;
2318 }
2319
2320 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
2321 hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED;
2322 hisi_hba->devices[i].device_id = i;
2323 hisi_hba->devices[i].dev_status = HISI_SAS_DEV_INIT;
2324 }
2325
2326 for (i = 0; i < hisi_hba->queue_count; i++) {
2327 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2328 struct hisi_sas_dq *dq = &hisi_hba->dq[i];
2329
2330
2331 cq->id = i;
2332 cq->hisi_hba = hisi_hba;
2333
2334
2335 spin_lock_init(&dq->lock);
2336 INIT_LIST_HEAD(&dq->list);
2337 dq->id = i;
2338 dq->hisi_hba = hisi_hba;
2339
2340
2341 s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
2342 hisi_hba->cmd_hdr[i] = dmam_alloc_coherent(dev, s,
2343 &hisi_hba->cmd_hdr_dma[i],
2344 GFP_KERNEL);
2345 if (!hisi_hba->cmd_hdr[i])
2346 goto err_out;
2347
2348
2349 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
2350 hisi_hba->complete_hdr[i] = dmam_alloc_coherent(dev, s,
2351 &hisi_hba->complete_hdr_dma[i],
2352 GFP_KERNEL);
2353 if (!hisi_hba->complete_hdr[i])
2354 goto err_out;
2355 }
2356
2357 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
2358 hisi_hba->itct = dmam_alloc_coherent(dev, s, &hisi_hba->itct_dma,
2359 GFP_KERNEL);
2360 if (!hisi_hba->itct)
2361 goto err_out;
2362
2363 hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries,
2364 sizeof(struct hisi_sas_slot),
2365 GFP_KERNEL);
2366 if (!hisi_hba->slot_info)
2367 goto err_out;
2368
2369
2370 max_command_entries_ru = roundup(max_command_entries, 64);
2371 if (hisi_hba->prot_mask & HISI_SAS_DIX_PROT_MASK)
2372 sz_slot_buf_ru = sizeof(struct hisi_sas_slot_dif_buf_table);
2373 else
2374 sz_slot_buf_ru = sizeof(struct hisi_sas_slot_buf_table);
2375 sz_slot_buf_ru = roundup(sz_slot_buf_ru, 64);
2376 s = max(lcm(max_command_entries_ru, sz_slot_buf_ru), PAGE_SIZE);
2377 blk_cnt = (max_command_entries_ru * sz_slot_buf_ru) / s;
2378 slots_per_blk = s / sz_slot_buf_ru;
2379
2380 for (i = 0; i < blk_cnt; i++) {
2381 int slot_index = i * slots_per_blk;
2382 dma_addr_t buf_dma;
2383 void *buf;
2384
2385 buf = dmam_alloc_coherent(dev, s, &buf_dma,
2386 GFP_KERNEL);
2387 if (!buf)
2388 goto err_out;
2389
2390 for (j = 0; j < slots_per_blk; j++, slot_index++) {
2391 struct hisi_sas_slot *slot;
2392
2393 slot = &hisi_hba->slot_info[slot_index];
2394 slot->buf = buf;
2395 slot->buf_dma = buf_dma;
2396 slot->idx = slot_index;
2397
2398 buf += sz_slot_buf_ru;
2399 buf_dma += sz_slot_buf_ru;
2400 }
2401 }
2402
2403 s = max_command_entries * sizeof(struct hisi_sas_iost);
2404 hisi_hba->iost = dmam_alloc_coherent(dev, s, &hisi_hba->iost_dma,
2405 GFP_KERNEL);
2406 if (!hisi_hba->iost)
2407 goto err_out;
2408
2409 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
2410 hisi_hba->breakpoint = dmam_alloc_coherent(dev, s,
2411 &hisi_hba->breakpoint_dma,
2412 GFP_KERNEL);
2413 if (!hisi_hba->breakpoint)
2414 goto err_out;
2415
2416 hisi_hba->slot_index_count = max_command_entries;
2417 s = hisi_hba->slot_index_count / BITS_PER_BYTE;
2418 hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL);
2419 if (!hisi_hba->slot_index_tags)
2420 goto err_out;
2421
2422 s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
2423 hisi_hba->initial_fis = dmam_alloc_coherent(dev, s,
2424 &hisi_hba->initial_fis_dma,
2425 GFP_KERNEL);
2426 if (!hisi_hba->initial_fis)
2427 goto err_out;
2428
2429 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_sata_breakpoint);
2430 hisi_hba->sata_breakpoint = dmam_alloc_coherent(dev, s,
2431 &hisi_hba->sata_breakpoint_dma,
2432 GFP_KERNEL);
2433 if (!hisi_hba->sata_breakpoint)
2434 goto err_out;
2435
2436 hisi_sas_slot_index_init(hisi_hba);
2437 hisi_hba->last_slot_index = HISI_SAS_UNRESERVED_IPTT;
2438
2439 hisi_hba->wq = create_singlethread_workqueue(dev_name(dev));
2440 if (!hisi_hba->wq) {
2441 dev_err(dev, "sas_alloc: failed to create workqueue\n");
2442 goto err_out;
2443 }
2444
2445 return 0;
2446err_out:
2447 return -ENOMEM;
2448}
2449EXPORT_SYMBOL_GPL(hisi_sas_alloc);
2450
2451void hisi_sas_free(struct hisi_hba *hisi_hba)
2452{
2453 int i;
2454
2455 for (i = 0; i < hisi_hba->n_phy; i++) {
2456 struct hisi_sas_phy *phy = &hisi_hba->phy[i];
2457
2458 del_timer_sync(&phy->timer);
2459 }
2460
2461 if (hisi_hba->wq)
2462 destroy_workqueue(hisi_hba->wq);
2463}
2464EXPORT_SYMBOL_GPL(hisi_sas_free);
2465
2466void hisi_sas_rst_work_handler(struct work_struct *work)
2467{
2468 struct hisi_hba *hisi_hba =
2469 container_of(work, struct hisi_hba, rst_work);
2470
2471 hisi_sas_controller_reset(hisi_hba);
2472}
2473EXPORT_SYMBOL_GPL(hisi_sas_rst_work_handler);
2474
2475void hisi_sas_sync_rst_work_handler(struct work_struct *work)
2476{
2477 struct hisi_sas_rst *rst =
2478 container_of(work, struct hisi_sas_rst, work);
2479
2480 if (!hisi_sas_controller_reset(rst->hisi_hba))
2481 rst->done = true;
2482 complete(rst->completion);
2483}
2484EXPORT_SYMBOL_GPL(hisi_sas_sync_rst_work_handler);
2485
2486int hisi_sas_get_fw_info(struct hisi_hba *hisi_hba)
2487{
2488 struct device *dev = hisi_hba->dev;
2489 struct platform_device *pdev = hisi_hba->platform_dev;
2490 struct device_node *np = pdev ? pdev->dev.of_node : NULL;
2491 struct clk *refclk;
2492
2493 if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr,
2494 SAS_ADDR_SIZE)) {
2495 dev_err(dev, "could not get property sas-addr\n");
2496 return -ENOENT;
2497 }
2498
2499 if (np) {
2500
2501
2502
2503
2504 hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np,
2505 "hisilicon,sas-syscon");
2506 if (IS_ERR(hisi_hba->ctrl)) {
2507 dev_err(dev, "could not get syscon\n");
2508 return -ENOENT;
2509 }
2510
2511 if (device_property_read_u32(dev, "ctrl-reset-reg",
2512 &hisi_hba->ctrl_reset_reg)) {
2513 dev_err(dev, "could not get property ctrl-reset-reg\n");
2514 return -ENOENT;
2515 }
2516
2517 if (device_property_read_u32(dev, "ctrl-reset-sts-reg",
2518 &hisi_hba->ctrl_reset_sts_reg)) {
2519 dev_err(dev, "could not get property ctrl-reset-sts-reg\n");
2520 return -ENOENT;
2521 }
2522
2523 if (device_property_read_u32(dev, "ctrl-clock-ena-reg",
2524 &hisi_hba->ctrl_clock_ena_reg)) {
2525 dev_err(dev, "could not get property ctrl-clock-ena-reg\n");
2526 return -ENOENT;
2527 }
2528 }
2529
2530 refclk = devm_clk_get(dev, NULL);
2531 if (IS_ERR(refclk))
2532 dev_dbg(dev, "no ref clk property\n");
2533 else
2534 hisi_hba->refclk_frequency_mhz = clk_get_rate(refclk) / 1000000;
2535
2536 if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy)) {
2537 dev_err(dev, "could not get property phy-count\n");
2538 return -ENOENT;
2539 }
2540
2541 if (device_property_read_u32(dev, "queue-count",
2542 &hisi_hba->queue_count)) {
2543 dev_err(dev, "could not get property queue-count\n");
2544 return -ENOENT;
2545 }
2546
2547 return 0;
2548}
2549EXPORT_SYMBOL_GPL(hisi_sas_get_fw_info);
2550
2551static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
2552 const struct hisi_sas_hw *hw)
2553{
2554 struct resource *res;
2555 struct Scsi_Host *shost;
2556 struct hisi_hba *hisi_hba;
2557 struct device *dev = &pdev->dev;
2558 int error;
2559
2560 shost = scsi_host_alloc(hw->sht, sizeof(*hisi_hba));
2561 if (!shost) {
2562 dev_err(dev, "scsi host alloc failed\n");
2563 return NULL;
2564 }
2565 hisi_hba = shost_priv(shost);
2566
2567 INIT_WORK(&hisi_hba->rst_work, hisi_sas_rst_work_handler);
2568 hisi_hba->hw = hw;
2569 hisi_hba->dev = dev;
2570 hisi_hba->platform_dev = pdev;
2571 hisi_hba->shost = shost;
2572 SHOST_TO_SAS_HA(shost) = &hisi_hba->sha;
2573
2574 timer_setup(&hisi_hba->timer, NULL, 0);
2575
2576 if (hisi_sas_get_fw_info(hisi_hba) < 0)
2577 goto err_out;
2578
2579 error = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
2580 if (error)
2581 error = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
2582
2583 if (error) {
2584 dev_err(dev, "No usable DMA addressing method\n");
2585 goto err_out;
2586 }
2587
2588 hisi_hba->regs = devm_platform_ioremap_resource(pdev, 0);
2589 if (IS_ERR(hisi_hba->regs))
2590 goto err_out;
2591
2592 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2593 if (res) {
2594 hisi_hba->sgpio_regs = devm_ioremap_resource(dev, res);
2595 if (IS_ERR(hisi_hba->sgpio_regs))
2596 goto err_out;
2597 }
2598
2599 if (hisi_sas_alloc(hisi_hba)) {
2600 hisi_sas_free(hisi_hba);
2601 goto err_out;
2602 }
2603
2604 return shost;
2605err_out:
2606 scsi_host_put(shost);
2607 dev_err(dev, "shost alloc failed\n");
2608 return NULL;
2609}
2610
2611int hisi_sas_probe(struct platform_device *pdev,
2612 const struct hisi_sas_hw *hw)
2613{
2614 struct Scsi_Host *shost;
2615 struct hisi_hba *hisi_hba;
2616 struct device *dev = &pdev->dev;
2617 struct asd_sas_phy **arr_phy;
2618 struct asd_sas_port **arr_port;
2619 struct sas_ha_struct *sha;
2620 int rc, phy_nr, port_nr, i;
2621
2622 shost = hisi_sas_shost_alloc(pdev, hw);
2623 if (!shost)
2624 return -ENOMEM;
2625
2626 sha = SHOST_TO_SAS_HA(shost);
2627 hisi_hba = shost_priv(shost);
2628 platform_set_drvdata(pdev, sha);
2629
2630 phy_nr = port_nr = hisi_hba->n_phy;
2631
2632 arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL);
2633 arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL);
2634 if (!arr_phy || !arr_port) {
2635 rc = -ENOMEM;
2636 goto err_out_ha;
2637 }
2638
2639 sha->sas_phy = arr_phy;
2640 sha->sas_port = arr_port;
2641 sha->lldd_ha = hisi_hba;
2642
2643 shost->transportt = hisi_sas_stt;
2644 shost->max_id = HISI_SAS_MAX_DEVICES;
2645 shost->max_lun = ~0;
2646 shost->max_channel = 1;
2647 shost->max_cmd_len = 16;
2648 if (hisi_hba->hw->slot_index_alloc) {
2649 shost->can_queue = HISI_SAS_MAX_COMMANDS;
2650 shost->cmd_per_lun = HISI_SAS_MAX_COMMANDS;
2651 } else {
2652 shost->can_queue = HISI_SAS_UNRESERVED_IPTT;
2653 shost->cmd_per_lun = HISI_SAS_UNRESERVED_IPTT;
2654 }
2655
2656 sha->sas_ha_name = DRV_NAME;
2657 sha->dev = hisi_hba->dev;
2658 sha->lldd_module = THIS_MODULE;
2659 sha->sas_addr = &hisi_hba->sas_addr[0];
2660 sha->num_phys = hisi_hba->n_phy;
2661 sha->core.shost = hisi_hba->shost;
2662
2663 for (i = 0; i < hisi_hba->n_phy; i++) {
2664 sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy;
2665 sha->sas_port[i] = &hisi_hba->port[i].sas_port;
2666 }
2667
2668 rc = scsi_add_host(shost, &pdev->dev);
2669 if (rc)
2670 goto err_out_ha;
2671
2672 rc = sas_register_ha(sha);
2673 if (rc)
2674 goto err_out_register_ha;
2675
2676 rc = hisi_hba->hw->hw_init(hisi_hba);
2677 if (rc)
2678 goto err_out_register_ha;
2679
2680 scsi_scan_host(shost);
2681
2682 return 0;
2683
2684err_out_register_ha:
2685 scsi_remove_host(shost);
2686err_out_ha:
2687 hisi_sas_debugfs_exit(hisi_hba);
2688 hisi_sas_free(hisi_hba);
2689 scsi_host_put(shost);
2690 return rc;
2691}
2692EXPORT_SYMBOL_GPL(hisi_sas_probe);
2693
2694struct dentry *hisi_sas_debugfs_dir;
2695
2696static void hisi_sas_debugfs_snapshot_cq_reg(struct hisi_hba *hisi_hba)
2697{
2698 int queue_entry_size = hisi_hba->hw->complete_hdr_size;
2699 int dump_index = hisi_hba->debugfs_dump_index;
2700 int i;
2701
2702 for (i = 0; i < hisi_hba->queue_count; i++)
2703 memcpy(hisi_hba->debugfs_cq[dump_index][i].complete_hdr,
2704 hisi_hba->complete_hdr[i],
2705 HISI_SAS_QUEUE_SLOTS * queue_entry_size);
2706}
2707
2708static void hisi_sas_debugfs_snapshot_dq_reg(struct hisi_hba *hisi_hba)
2709{
2710 int queue_entry_size = sizeof(struct hisi_sas_cmd_hdr);
2711 int dump_index = hisi_hba->debugfs_dump_index;
2712 int i;
2713
2714 for (i = 0; i < hisi_hba->queue_count; i++) {
2715 struct hisi_sas_cmd_hdr *debugfs_cmd_hdr, *cmd_hdr;
2716 int j;
2717
2718 debugfs_cmd_hdr = hisi_hba->debugfs_dq[dump_index][i].hdr;
2719 cmd_hdr = hisi_hba->cmd_hdr[i];
2720
2721 for (j = 0; j < HISI_SAS_QUEUE_SLOTS; j++)
2722 memcpy(&debugfs_cmd_hdr[j], &cmd_hdr[j],
2723 queue_entry_size);
2724 }
2725}
2726
2727static void hisi_sas_debugfs_snapshot_port_reg(struct hisi_hba *hisi_hba)
2728{
2729 int dump_index = hisi_hba->debugfs_dump_index;
2730 const struct hisi_sas_debugfs_reg *port =
2731 hisi_hba->hw->debugfs_reg_port;
2732 int i, phy_cnt;
2733 u32 offset;
2734 u32 *databuf;
2735
2736 for (phy_cnt = 0; phy_cnt < hisi_hba->n_phy; phy_cnt++) {
2737 databuf = hisi_hba->debugfs_port_reg[dump_index][phy_cnt].data;
2738 for (i = 0; i < port->count; i++, databuf++) {
2739 offset = port->base_off + 4 * i;
2740 *databuf = port->read_port_reg(hisi_hba, phy_cnt,
2741 offset);
2742 }
2743 }
2744}
2745
2746static void hisi_sas_debugfs_snapshot_global_reg(struct hisi_hba *hisi_hba)
2747{
2748 int dump_index = hisi_hba->debugfs_dump_index;
2749 u32 *databuf = hisi_hba->debugfs_regs[dump_index][DEBUGFS_GLOBAL].data;
2750 const struct hisi_sas_hw *hw = hisi_hba->hw;
2751 const struct hisi_sas_debugfs_reg *global =
2752 hw->debugfs_reg_array[DEBUGFS_GLOBAL];
2753 int i;
2754
2755 for (i = 0; i < global->count; i++, databuf++)
2756 *databuf = global->read_global_reg(hisi_hba, 4 * i);
2757}
2758
2759static void hisi_sas_debugfs_snapshot_axi_reg(struct hisi_hba *hisi_hba)
2760{
2761 int dump_index = hisi_hba->debugfs_dump_index;
2762 u32 *databuf = hisi_hba->debugfs_regs[dump_index][DEBUGFS_AXI].data;
2763 const struct hisi_sas_hw *hw = hisi_hba->hw;
2764 const struct hisi_sas_debugfs_reg *axi =
2765 hw->debugfs_reg_array[DEBUGFS_AXI];
2766 int i;
2767
2768 for (i = 0; i < axi->count; i++, databuf++)
2769 *databuf = axi->read_global_reg(hisi_hba,
2770 4 * i + axi->base_off);
2771}
2772
2773static void hisi_sas_debugfs_snapshot_ras_reg(struct hisi_hba *hisi_hba)
2774{
2775 int dump_index = hisi_hba->debugfs_dump_index;
2776 u32 *databuf = hisi_hba->debugfs_regs[dump_index][DEBUGFS_RAS].data;
2777 const struct hisi_sas_hw *hw = hisi_hba->hw;
2778 const struct hisi_sas_debugfs_reg *ras =
2779 hw->debugfs_reg_array[DEBUGFS_RAS];
2780 int i;
2781
2782 for (i = 0; i < ras->count; i++, databuf++)
2783 *databuf = ras->read_global_reg(hisi_hba,
2784 4 * i + ras->base_off);
2785}
2786
2787static void hisi_sas_debugfs_snapshot_itct_reg(struct hisi_hba *hisi_hba)
2788{
2789 int dump_index = hisi_hba->debugfs_dump_index;
2790 void *cachebuf = hisi_hba->debugfs_itct_cache[dump_index].cache;
2791 void *databuf = hisi_hba->debugfs_itct[dump_index].itct;
2792 struct hisi_sas_itct *itct;
2793 int i;
2794
2795 hisi_hba->hw->read_iost_itct_cache(hisi_hba, HISI_SAS_ITCT_CACHE,
2796 cachebuf);
2797
2798 itct = hisi_hba->itct;
2799
2800 for (i = 0; i < HISI_SAS_MAX_ITCT_ENTRIES; i++, itct++) {
2801 memcpy(databuf, itct, sizeof(struct hisi_sas_itct));
2802 databuf += sizeof(struct hisi_sas_itct);
2803 }
2804}
2805
2806static void hisi_sas_debugfs_snapshot_iost_reg(struct hisi_hba *hisi_hba)
2807{
2808 int dump_index = hisi_hba->debugfs_dump_index;
2809 int max_command_entries = HISI_SAS_MAX_COMMANDS;
2810 void *cachebuf = hisi_hba->debugfs_iost_cache[dump_index].cache;
2811 void *databuf = hisi_hba->debugfs_iost[dump_index].iost;
2812 struct hisi_sas_iost *iost;
2813 int i;
2814
2815 hisi_hba->hw->read_iost_itct_cache(hisi_hba, HISI_SAS_IOST_CACHE,
2816 cachebuf);
2817
2818 iost = hisi_hba->iost;
2819
2820 for (i = 0; i < max_command_entries; i++, iost++) {
2821 memcpy(databuf, iost, sizeof(struct hisi_sas_iost));
2822 databuf += sizeof(struct hisi_sas_iost);
2823 }
2824}
2825
2826static const char *
2827hisi_sas_debugfs_to_reg_name(int off, int base_off,
2828 const struct hisi_sas_debugfs_reg_lu *lu)
2829{
2830 for (; lu->name; lu++) {
2831 if (off == lu->off - base_off)
2832 return lu->name;
2833 }
2834
2835 return NULL;
2836}
2837
2838static void hisi_sas_debugfs_print_reg(u32 *regs_val, const void *ptr,
2839 struct seq_file *s)
2840{
2841 const struct hisi_sas_debugfs_reg *reg = ptr;
2842 int i;
2843
2844 for (i = 0; i < reg->count; i++) {
2845 int off = i * 4;
2846 const char *name;
2847
2848 name = hisi_sas_debugfs_to_reg_name(off, reg->base_off,
2849 reg->lu);
2850
2851 if (name)
2852 seq_printf(s, "0x%08x 0x%08x %s\n", off,
2853 regs_val[i], name);
2854 else
2855 seq_printf(s, "0x%08x 0x%08x\n", off,
2856 regs_val[i]);
2857 }
2858}
2859
2860static int hisi_sas_debugfs_global_show(struct seq_file *s, void *p)
2861{
2862 struct hisi_sas_debugfs_regs *global = s->private;
2863 struct hisi_hba *hisi_hba = global->hisi_hba;
2864 const struct hisi_sas_hw *hw = hisi_hba->hw;
2865 const void *reg_global = hw->debugfs_reg_array[DEBUGFS_GLOBAL];
2866
2867 hisi_sas_debugfs_print_reg(global->data,
2868 reg_global, s);
2869
2870 return 0;
2871}
2872
2873static int hisi_sas_debugfs_global_open(struct inode *inode, struct file *filp)
2874{
2875 return single_open(filp, hisi_sas_debugfs_global_show,
2876 inode->i_private);
2877}
2878
2879static const struct file_operations hisi_sas_debugfs_global_fops = {
2880 .open = hisi_sas_debugfs_global_open,
2881 .read = seq_read,
2882 .llseek = seq_lseek,
2883 .release = single_release,
2884 .owner = THIS_MODULE,
2885};
2886
2887static int hisi_sas_debugfs_axi_show(struct seq_file *s, void *p)
2888{
2889 struct hisi_sas_debugfs_regs *axi = s->private;
2890 struct hisi_hba *hisi_hba = axi->hisi_hba;
2891 const struct hisi_sas_hw *hw = hisi_hba->hw;
2892 const void *reg_axi = hw->debugfs_reg_array[DEBUGFS_AXI];
2893
2894 hisi_sas_debugfs_print_reg(axi->data,
2895 reg_axi, s);
2896
2897 return 0;
2898}
2899
2900static int hisi_sas_debugfs_axi_open(struct inode *inode, struct file *filp)
2901{
2902 return single_open(filp, hisi_sas_debugfs_axi_show,
2903 inode->i_private);
2904}
2905
2906static const struct file_operations hisi_sas_debugfs_axi_fops = {
2907 .open = hisi_sas_debugfs_axi_open,
2908 .read = seq_read,
2909 .llseek = seq_lseek,
2910 .release = single_release,
2911 .owner = THIS_MODULE,
2912};
2913
2914static int hisi_sas_debugfs_ras_show(struct seq_file *s, void *p)
2915{
2916 struct hisi_sas_debugfs_regs *ras = s->private;
2917 struct hisi_hba *hisi_hba = ras->hisi_hba;
2918 const struct hisi_sas_hw *hw = hisi_hba->hw;
2919 const void *reg_ras = hw->debugfs_reg_array[DEBUGFS_RAS];
2920
2921 hisi_sas_debugfs_print_reg(ras->data,
2922 reg_ras, s);
2923
2924 return 0;
2925}
2926
2927static int hisi_sas_debugfs_ras_open(struct inode *inode, struct file *filp)
2928{
2929 return single_open(filp, hisi_sas_debugfs_ras_show,
2930 inode->i_private);
2931}
2932
2933static const struct file_operations hisi_sas_debugfs_ras_fops = {
2934 .open = hisi_sas_debugfs_ras_open,
2935 .read = seq_read,
2936 .llseek = seq_lseek,
2937 .release = single_release,
2938 .owner = THIS_MODULE,
2939};
2940
2941static int hisi_sas_debugfs_port_show(struct seq_file *s, void *p)
2942{
2943 struct hisi_sas_debugfs_port *port = s->private;
2944 struct hisi_sas_phy *phy = port->phy;
2945 struct hisi_hba *hisi_hba = phy->hisi_hba;
2946 const struct hisi_sas_hw *hw = hisi_hba->hw;
2947 const struct hisi_sas_debugfs_reg *reg_port = hw->debugfs_reg_port;
2948
2949 hisi_sas_debugfs_print_reg(port->data, reg_port, s);
2950
2951 return 0;
2952}
2953
2954static int hisi_sas_debugfs_port_open(struct inode *inode, struct file *filp)
2955{
2956 return single_open(filp, hisi_sas_debugfs_port_show, inode->i_private);
2957}
2958
2959static const struct file_operations hisi_sas_debugfs_port_fops = {
2960 .open = hisi_sas_debugfs_port_open,
2961 .read = seq_read,
2962 .llseek = seq_lseek,
2963 .release = single_release,
2964 .owner = THIS_MODULE,
2965};
2966
2967static void hisi_sas_show_row_64(struct seq_file *s, int index,
2968 int sz, __le64 *ptr)
2969{
2970 int i;
2971
2972
2973 seq_printf(s, "index %04d:\n\t", index);
2974 for (i = 1; i <= sz / 8; i++, ptr++) {
2975 seq_printf(s, " 0x%016llx", le64_to_cpu(*ptr));
2976 if (!(i % 2))
2977 seq_puts(s, "\n\t");
2978 }
2979
2980 seq_puts(s, "\n");
2981}
2982
2983static void hisi_sas_show_row_32(struct seq_file *s, int index,
2984 int sz, __le32 *ptr)
2985{
2986 int i;
2987
2988
2989 seq_printf(s, "index %04d:\n\t", index);
2990 for (i = 1; i <= sz / 4; i++, ptr++) {
2991 seq_printf(s, " 0x%08x", le32_to_cpu(*ptr));
2992 if (!(i % 4))
2993 seq_puts(s, "\n\t");
2994 }
2995 seq_puts(s, "\n");
2996}
2997
2998static void hisi_sas_cq_show_slot(struct seq_file *s, int slot,
2999 struct hisi_sas_debugfs_cq *debugfs_cq)
3000{
3001 struct hisi_sas_cq *cq = debugfs_cq->cq;
3002 struct hisi_hba *hisi_hba = cq->hisi_hba;
3003 __le32 *complete_hdr = debugfs_cq->complete_hdr +
3004 (hisi_hba->hw->complete_hdr_size * slot);
3005
3006 hisi_sas_show_row_32(s, slot,
3007 hisi_hba->hw->complete_hdr_size,
3008 complete_hdr);
3009}
3010
3011static int hisi_sas_debugfs_cq_show(struct seq_file *s, void *p)
3012{
3013 struct hisi_sas_debugfs_cq *debugfs_cq = s->private;
3014 int slot;
3015
3016 for (slot = 0; slot < HISI_SAS_QUEUE_SLOTS; slot++) {
3017 hisi_sas_cq_show_slot(s, slot, debugfs_cq);
3018 }
3019 return 0;
3020}
3021
3022static int hisi_sas_debugfs_cq_open(struct inode *inode, struct file *filp)
3023{
3024 return single_open(filp, hisi_sas_debugfs_cq_show, inode->i_private);
3025}
3026
3027static const struct file_operations hisi_sas_debugfs_cq_fops = {
3028 .open = hisi_sas_debugfs_cq_open,
3029 .read = seq_read,
3030 .llseek = seq_lseek,
3031 .release = single_release,
3032 .owner = THIS_MODULE,
3033};
3034
3035static void hisi_sas_dq_show_slot(struct seq_file *s, int slot, void *dq_ptr)
3036{
3037 struct hisi_sas_debugfs_dq *debugfs_dq = dq_ptr;
3038 void *cmd_queue = debugfs_dq->hdr;
3039 __le32 *cmd_hdr = cmd_queue +
3040 sizeof(struct hisi_sas_cmd_hdr) * slot;
3041
3042 hisi_sas_show_row_32(s, slot, sizeof(struct hisi_sas_cmd_hdr), cmd_hdr);
3043}
3044
3045static int hisi_sas_debugfs_dq_show(struct seq_file *s, void *p)
3046{
3047 int slot;
3048
3049 for (slot = 0; slot < HISI_SAS_QUEUE_SLOTS; slot++) {
3050 hisi_sas_dq_show_slot(s, slot, s->private);
3051 }
3052 return 0;
3053}
3054
3055static int hisi_sas_debugfs_dq_open(struct inode *inode, struct file *filp)
3056{
3057 return single_open(filp, hisi_sas_debugfs_dq_show, inode->i_private);
3058}
3059
3060static const struct file_operations hisi_sas_debugfs_dq_fops = {
3061 .open = hisi_sas_debugfs_dq_open,
3062 .read = seq_read,
3063 .llseek = seq_lseek,
3064 .release = single_release,
3065 .owner = THIS_MODULE,
3066};
3067
3068static int hisi_sas_debugfs_iost_show(struct seq_file *s, void *p)
3069{
3070 struct hisi_sas_debugfs_iost *debugfs_iost = s->private;
3071 struct hisi_sas_iost *iost = debugfs_iost->iost;
3072 int i, max_command_entries = HISI_SAS_MAX_COMMANDS;
3073
3074 for (i = 0; i < max_command_entries; i++, iost++) {
3075 __le64 *data = &iost->qw0;
3076
3077 hisi_sas_show_row_64(s, i, sizeof(*iost), data);
3078 }
3079
3080 return 0;
3081}
3082
3083static int hisi_sas_debugfs_iost_open(struct inode *inode, struct file *filp)
3084{
3085 return single_open(filp, hisi_sas_debugfs_iost_show, inode->i_private);
3086}
3087
3088static const struct file_operations hisi_sas_debugfs_iost_fops = {
3089 .open = hisi_sas_debugfs_iost_open,
3090 .read = seq_read,
3091 .llseek = seq_lseek,
3092 .release = single_release,
3093 .owner = THIS_MODULE,
3094};
3095
3096static int hisi_sas_debugfs_iost_cache_show(struct seq_file *s, void *p)
3097{
3098 struct hisi_sas_debugfs_iost_cache *debugfs_iost_cache = s->private;
3099 struct hisi_sas_iost_itct_cache *iost_cache = debugfs_iost_cache->cache;
3100 u32 cache_size = HISI_SAS_IOST_ITCT_CACHE_DW_SZ * 4;
3101 int i, tab_idx;
3102 __le64 *iost;
3103
3104 for (i = 0; i < HISI_SAS_IOST_ITCT_CACHE_NUM; i++, iost_cache++) {
3105
3106
3107
3108
3109
3110
3111 tab_idx = (iost_cache->data[1] & 0xffff);
3112 iost = (__le64 *)iost_cache;
3113
3114 hisi_sas_show_row_64(s, tab_idx, cache_size, iost);
3115 }
3116
3117 return 0;
3118}
3119
3120static int hisi_sas_debugfs_iost_cache_open(struct inode *inode,
3121 struct file *filp)
3122{
3123 return single_open(filp, hisi_sas_debugfs_iost_cache_show,
3124 inode->i_private);
3125}
3126
3127static const struct file_operations hisi_sas_debugfs_iost_cache_fops = {
3128 .open = hisi_sas_debugfs_iost_cache_open,
3129 .read = seq_read,
3130 .llseek = seq_lseek,
3131 .release = single_release,
3132 .owner = THIS_MODULE,
3133};
3134
3135static int hisi_sas_debugfs_itct_show(struct seq_file *s, void *p)
3136{
3137 int i;
3138 struct hisi_sas_debugfs_itct *debugfs_itct = s->private;
3139 struct hisi_sas_itct *itct = debugfs_itct->itct;
3140
3141 for (i = 0; i < HISI_SAS_MAX_ITCT_ENTRIES; i++, itct++) {
3142 __le64 *data = &itct->qw0;
3143
3144 hisi_sas_show_row_64(s, i, sizeof(*itct), data);
3145 }
3146
3147 return 0;
3148}
3149
3150static int hisi_sas_debugfs_itct_open(struct inode *inode, struct file *filp)
3151{
3152 return single_open(filp, hisi_sas_debugfs_itct_show, inode->i_private);
3153}
3154
3155static const struct file_operations hisi_sas_debugfs_itct_fops = {
3156 .open = hisi_sas_debugfs_itct_open,
3157 .read = seq_read,
3158 .llseek = seq_lseek,
3159 .release = single_release,
3160 .owner = THIS_MODULE,
3161};
3162
3163static int hisi_sas_debugfs_itct_cache_show(struct seq_file *s, void *p)
3164{
3165 struct hisi_sas_debugfs_itct_cache *debugfs_itct_cache = s->private;
3166 struct hisi_sas_iost_itct_cache *itct_cache = debugfs_itct_cache->cache;
3167 u32 cache_size = HISI_SAS_IOST_ITCT_CACHE_DW_SZ * 4;
3168 int i, tab_idx;
3169 __le64 *itct;
3170
3171 for (i = 0; i < HISI_SAS_IOST_ITCT_CACHE_NUM; i++, itct_cache++) {
3172
3173
3174
3175
3176
3177
3178 tab_idx = itct_cache->data[1] & 0xffff;
3179 itct = (__le64 *)itct_cache;
3180
3181 hisi_sas_show_row_64(s, tab_idx, cache_size, itct);
3182 }
3183
3184 return 0;
3185}
3186
3187static int hisi_sas_debugfs_itct_cache_open(struct inode *inode,
3188 struct file *filp)
3189{
3190 return single_open(filp, hisi_sas_debugfs_itct_cache_show,
3191 inode->i_private);
3192}
3193
3194static const struct file_operations hisi_sas_debugfs_itct_cache_fops = {
3195 .open = hisi_sas_debugfs_itct_cache_open,
3196 .read = seq_read,
3197 .llseek = seq_lseek,
3198 .release = single_release,
3199 .owner = THIS_MODULE,
3200};
3201
3202static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba)
3203{
3204 u64 *debugfs_timestamp;
3205 int dump_index = hisi_hba->debugfs_dump_index;
3206 struct dentry *dump_dentry;
3207 struct dentry *dentry;
3208 char name[256];
3209 int p;
3210 int c;
3211 int d;
3212
3213 snprintf(name, 256, "%d", dump_index);
3214
3215 dump_dentry = debugfs_create_dir(name, hisi_hba->debugfs_dump_dentry);
3216
3217 debugfs_timestamp = &hisi_hba->debugfs_timestamp[dump_index];
3218
3219 debugfs_create_u64("timestamp", 0400, dump_dentry,
3220 debugfs_timestamp);
3221
3222 debugfs_create_file("global", 0400, dump_dentry,
3223 &hisi_hba->debugfs_regs[dump_index][DEBUGFS_GLOBAL],
3224 &hisi_sas_debugfs_global_fops);
3225
3226
3227 dentry = debugfs_create_dir("port", dump_dentry);
3228 for (p = 0; p < hisi_hba->n_phy; p++) {
3229 snprintf(name, 256, "%d", p);
3230
3231 debugfs_create_file(name, 0400, dentry,
3232 &hisi_hba->debugfs_port_reg[dump_index][p],
3233 &hisi_sas_debugfs_port_fops);
3234 }
3235
3236
3237 dentry = debugfs_create_dir("cq", dump_dentry);
3238 for (c = 0; c < hisi_hba->queue_count; c++) {
3239 snprintf(name, 256, "%d", c);
3240
3241 debugfs_create_file(name, 0400, dentry,
3242 &hisi_hba->debugfs_cq[dump_index][c],
3243 &hisi_sas_debugfs_cq_fops);
3244 }
3245
3246
3247 dentry = debugfs_create_dir("dq", dump_dentry);
3248 for (d = 0; d < hisi_hba->queue_count; d++) {
3249 snprintf(name, 256, "%d", d);
3250
3251 debugfs_create_file(name, 0400, dentry,
3252 &hisi_hba->debugfs_dq[dump_index][d],
3253 &hisi_sas_debugfs_dq_fops);
3254 }
3255
3256 debugfs_create_file("iost", 0400, dump_dentry,
3257 &hisi_hba->debugfs_iost[dump_index],
3258 &hisi_sas_debugfs_iost_fops);
3259
3260 debugfs_create_file("iost_cache", 0400, dump_dentry,
3261 &hisi_hba->debugfs_iost_cache[dump_index],
3262 &hisi_sas_debugfs_iost_cache_fops);
3263
3264 debugfs_create_file("itct", 0400, dump_dentry,
3265 &hisi_hba->debugfs_itct[dump_index],
3266 &hisi_sas_debugfs_itct_fops);
3267
3268 debugfs_create_file("itct_cache", 0400, dump_dentry,
3269 &hisi_hba->debugfs_itct_cache[dump_index],
3270 &hisi_sas_debugfs_itct_cache_fops);
3271
3272 debugfs_create_file("axi", 0400, dump_dentry,
3273 &hisi_hba->debugfs_regs[dump_index][DEBUGFS_AXI],
3274 &hisi_sas_debugfs_axi_fops);
3275
3276 debugfs_create_file("ras", 0400, dump_dentry,
3277 &hisi_hba->debugfs_regs[dump_index][DEBUGFS_RAS],
3278 &hisi_sas_debugfs_ras_fops);
3279
3280 return;
3281}
3282
3283static void hisi_sas_debugfs_snapshot_regs(struct hisi_hba *hisi_hba)
3284{
3285 hisi_hba->hw->snapshot_prepare(hisi_hba);
3286
3287 hisi_sas_debugfs_snapshot_global_reg(hisi_hba);
3288 hisi_sas_debugfs_snapshot_port_reg(hisi_hba);
3289 hisi_sas_debugfs_snapshot_axi_reg(hisi_hba);
3290 hisi_sas_debugfs_snapshot_ras_reg(hisi_hba);
3291 hisi_sas_debugfs_snapshot_cq_reg(hisi_hba);
3292 hisi_sas_debugfs_snapshot_dq_reg(hisi_hba);
3293 hisi_sas_debugfs_snapshot_itct_reg(hisi_hba);
3294 hisi_sas_debugfs_snapshot_iost_reg(hisi_hba);
3295
3296 hisi_sas_debugfs_create_files(hisi_hba);
3297
3298 hisi_hba->hw->snapshot_restore(hisi_hba);
3299}
3300
3301static ssize_t hisi_sas_debugfs_trigger_dump_write(struct file *file,
3302 const char __user *user_buf,
3303 size_t count, loff_t *ppos)
3304{
3305 struct hisi_hba *hisi_hba = file->f_inode->i_private;
3306 char buf[8];
3307
3308 if (hisi_hba->debugfs_dump_index >= hisi_sas_debugfs_dump_count)
3309 return -EFAULT;
3310
3311 if (count > 8)
3312 return -EFAULT;
3313
3314 if (copy_from_user(buf, user_buf, count))
3315 return -EFAULT;
3316
3317 if (buf[0] != '1')
3318 return -EFAULT;
3319
3320 queue_work(hisi_hba->wq, &hisi_hba->debugfs_work);
3321
3322 return count;
3323}
3324
3325static const struct file_operations hisi_sas_debugfs_trigger_dump_fops = {
3326 .write = &hisi_sas_debugfs_trigger_dump_write,
3327 .owner = THIS_MODULE,
3328};
3329
3330enum {
3331 HISI_SAS_BIST_LOOPBACK_MODE_DIGITAL = 0,
3332 HISI_SAS_BIST_LOOPBACK_MODE_SERDES,
3333 HISI_SAS_BIST_LOOPBACK_MODE_REMOTE,
3334};
3335
3336enum {
3337 HISI_SAS_BIST_CODE_MODE_PRBS7 = 0,
3338 HISI_SAS_BIST_CODE_MODE_PRBS23,
3339 HISI_SAS_BIST_CODE_MODE_PRBS31,
3340 HISI_SAS_BIST_CODE_MODE_JTPAT,
3341 HISI_SAS_BIST_CODE_MODE_CJTPAT,
3342 HISI_SAS_BIST_CODE_MODE_SCRAMBED_0,
3343 HISI_SAS_BIST_CODE_MODE_TRAIN,
3344 HISI_SAS_BIST_CODE_MODE_TRAIN_DONE,
3345 HISI_SAS_BIST_CODE_MODE_HFTP,
3346 HISI_SAS_BIST_CODE_MODE_MFTP,
3347 HISI_SAS_BIST_CODE_MODE_LFTP,
3348 HISI_SAS_BIST_CODE_MODE_FIXED_DATA,
3349};
3350
3351static const struct {
3352 int value;
3353 char *name;
3354} hisi_sas_debugfs_loop_linkrate[] = {
3355 { SAS_LINK_RATE_1_5_GBPS, "1.5 Gbit" },
3356 { SAS_LINK_RATE_3_0_GBPS, "3.0 Gbit" },
3357 { SAS_LINK_RATE_6_0_GBPS, "6.0 Gbit" },
3358 { SAS_LINK_RATE_12_0_GBPS, "12.0 Gbit" },
3359};
3360
3361static int hisi_sas_debugfs_bist_linkrate_show(struct seq_file *s, void *p)
3362{
3363 struct hisi_hba *hisi_hba = s->private;
3364 int i;
3365
3366 for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_linkrate); i++) {
3367 int match = (hisi_hba->debugfs_bist_linkrate ==
3368 hisi_sas_debugfs_loop_linkrate[i].value);
3369
3370 seq_printf(s, "%s%s%s ", match ? "[" : "",
3371 hisi_sas_debugfs_loop_linkrate[i].name,
3372 match ? "]" : "");
3373 }
3374 seq_puts(s, "\n");
3375
3376 return 0;
3377}
3378
3379static ssize_t hisi_sas_debugfs_bist_linkrate_write(struct file *filp,
3380 const char __user *buf,
3381 size_t count, loff_t *ppos)
3382{
3383 struct seq_file *m = filp->private_data;
3384 struct hisi_hba *hisi_hba = m->private;
3385 char kbuf[16] = {}, *pkbuf;
3386 bool found = false;
3387 int i;
3388
3389 if (hisi_hba->debugfs_bist_enable)
3390 return -EPERM;
3391
3392 if (count >= sizeof(kbuf))
3393 return -EOVERFLOW;
3394
3395 if (copy_from_user(kbuf, buf, count))
3396 return -EINVAL;
3397
3398 pkbuf = strstrip(kbuf);
3399
3400 for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_linkrate); i++) {
3401 if (!strncmp(hisi_sas_debugfs_loop_linkrate[i].name,
3402 pkbuf, 16)) {
3403 hisi_hba->debugfs_bist_linkrate =
3404 hisi_sas_debugfs_loop_linkrate[i].value;
3405 found = true;
3406 break;
3407 }
3408 }
3409
3410 if (!found)
3411 return -EINVAL;
3412
3413 return count;
3414}
3415
3416static int hisi_sas_debugfs_bist_linkrate_open(struct inode *inode,
3417 struct file *filp)
3418{
3419 return single_open(filp, hisi_sas_debugfs_bist_linkrate_show,
3420 inode->i_private);
3421}
3422
3423static const struct file_operations hisi_sas_debugfs_bist_linkrate_ops = {
3424 .open = hisi_sas_debugfs_bist_linkrate_open,
3425 .read = seq_read,
3426 .write = hisi_sas_debugfs_bist_linkrate_write,
3427 .llseek = seq_lseek,
3428 .release = single_release,
3429 .owner = THIS_MODULE,
3430};
3431
3432static const struct {
3433 int value;
3434 char *name;
3435} hisi_sas_debugfs_loop_code_mode[] = {
3436 { HISI_SAS_BIST_CODE_MODE_PRBS7, "PRBS7" },
3437 { HISI_SAS_BIST_CODE_MODE_PRBS23, "PRBS23" },
3438 { HISI_SAS_BIST_CODE_MODE_PRBS31, "PRBS31" },
3439 { HISI_SAS_BIST_CODE_MODE_JTPAT, "JTPAT" },
3440 { HISI_SAS_BIST_CODE_MODE_CJTPAT, "CJTPAT" },
3441 { HISI_SAS_BIST_CODE_MODE_SCRAMBED_0, "SCRAMBED_0" },
3442 { HISI_SAS_BIST_CODE_MODE_TRAIN, "TRAIN" },
3443 { HISI_SAS_BIST_CODE_MODE_TRAIN_DONE, "TRAIN_DONE" },
3444 { HISI_SAS_BIST_CODE_MODE_HFTP, "HFTP" },
3445 { HISI_SAS_BIST_CODE_MODE_MFTP, "MFTP" },
3446 { HISI_SAS_BIST_CODE_MODE_LFTP, "LFTP" },
3447 { HISI_SAS_BIST_CODE_MODE_FIXED_DATA, "FIXED_DATA" },
3448};
3449
3450static int hisi_sas_debugfs_bist_code_mode_show(struct seq_file *s, void *p)
3451{
3452 struct hisi_hba *hisi_hba = s->private;
3453 int i;
3454
3455 for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_code_mode); i++) {
3456 int match = (hisi_hba->debugfs_bist_code_mode ==
3457 hisi_sas_debugfs_loop_code_mode[i].value);
3458
3459 seq_printf(s, "%s%s%s ", match ? "[" : "",
3460 hisi_sas_debugfs_loop_code_mode[i].name,
3461 match ? "]" : "");
3462 }
3463 seq_puts(s, "\n");
3464
3465 return 0;
3466}
3467
3468static ssize_t hisi_sas_debugfs_bist_code_mode_write(struct file *filp,
3469 const char __user *buf,
3470 size_t count,
3471 loff_t *ppos)
3472{
3473 struct seq_file *m = filp->private_data;
3474 struct hisi_hba *hisi_hba = m->private;
3475 char kbuf[16] = {}, *pkbuf;
3476 bool found = false;
3477 int i;
3478
3479 if (hisi_hba->debugfs_bist_enable)
3480 return -EPERM;
3481
3482 if (count >= sizeof(kbuf))
3483 return -EINVAL;
3484
3485 if (copy_from_user(kbuf, buf, count))
3486 return -EOVERFLOW;
3487
3488 pkbuf = strstrip(kbuf);
3489
3490 for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_code_mode); i++) {
3491 if (!strncmp(hisi_sas_debugfs_loop_code_mode[i].name,
3492 pkbuf, 16)) {
3493 hisi_hba->debugfs_bist_code_mode =
3494 hisi_sas_debugfs_loop_code_mode[i].value;
3495 found = true;
3496 break;
3497 }
3498 }
3499
3500 if (!found)
3501 return -EINVAL;
3502
3503 return count;
3504}
3505
3506static int hisi_sas_debugfs_bist_code_mode_open(struct inode *inode,
3507 struct file *filp)
3508{
3509 return single_open(filp, hisi_sas_debugfs_bist_code_mode_show,
3510 inode->i_private);
3511}
3512
3513static const struct file_operations hisi_sas_debugfs_bist_code_mode_ops = {
3514 .open = hisi_sas_debugfs_bist_code_mode_open,
3515 .read = seq_read,
3516 .write = hisi_sas_debugfs_bist_code_mode_write,
3517 .llseek = seq_lseek,
3518 .release = single_release,
3519 .owner = THIS_MODULE,
3520};
3521
3522static ssize_t hisi_sas_debugfs_bist_phy_write(struct file *filp,
3523 const char __user *buf,
3524 size_t count, loff_t *ppos)
3525{
3526 struct seq_file *m = filp->private_data;
3527 struct hisi_hba *hisi_hba = m->private;
3528 unsigned int phy_no;
3529 int val;
3530
3531 if (hisi_hba->debugfs_bist_enable)
3532 return -EPERM;
3533
3534 val = kstrtouint_from_user(buf, count, 0, &phy_no);
3535 if (val)
3536 return val;
3537
3538 if (phy_no >= hisi_hba->n_phy)
3539 return -EINVAL;
3540
3541 hisi_hba->debugfs_bist_phy_no = phy_no;
3542
3543 return count;
3544}
3545
3546static int hisi_sas_debugfs_bist_phy_show(struct seq_file *s, void *p)
3547{
3548 struct hisi_hba *hisi_hba = s->private;
3549
3550 seq_printf(s, "%d\n", hisi_hba->debugfs_bist_phy_no);
3551
3552 return 0;
3553}
3554
3555static int hisi_sas_debugfs_bist_phy_open(struct inode *inode,
3556 struct file *filp)
3557{
3558 return single_open(filp, hisi_sas_debugfs_bist_phy_show,
3559 inode->i_private);
3560}
3561
3562static const struct file_operations hisi_sas_debugfs_bist_phy_ops = {
3563 .open = hisi_sas_debugfs_bist_phy_open,
3564 .read = seq_read,
3565 .write = hisi_sas_debugfs_bist_phy_write,
3566 .llseek = seq_lseek,
3567 .release = single_release,
3568 .owner = THIS_MODULE,
3569};
3570
3571static const struct {
3572 int value;
3573 char *name;
3574} hisi_sas_debugfs_loop_modes[] = {
3575 { HISI_SAS_BIST_LOOPBACK_MODE_DIGITAL, "digital" },
3576 { HISI_SAS_BIST_LOOPBACK_MODE_SERDES, "serdes" },
3577 { HISI_SAS_BIST_LOOPBACK_MODE_REMOTE, "remote" },
3578};
3579
3580static int hisi_sas_debugfs_bist_mode_show(struct seq_file *s, void *p)
3581{
3582 struct hisi_hba *hisi_hba = s->private;
3583 int i;
3584
3585 for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_modes); i++) {
3586 int match = (hisi_hba->debugfs_bist_mode ==
3587 hisi_sas_debugfs_loop_modes[i].value);
3588
3589 seq_printf(s, "%s%s%s ", match ? "[" : "",
3590 hisi_sas_debugfs_loop_modes[i].name,
3591 match ? "]" : "");
3592 }
3593 seq_puts(s, "\n");
3594
3595 return 0;
3596}
3597
3598static ssize_t hisi_sas_debugfs_bist_mode_write(struct file *filp,
3599 const char __user *buf,
3600 size_t count, loff_t *ppos)
3601{
3602 struct seq_file *m = filp->private_data;
3603 struct hisi_hba *hisi_hba = m->private;
3604 char kbuf[16] = {}, *pkbuf;
3605 bool found = false;
3606 int i;
3607
3608 if (hisi_hba->debugfs_bist_enable)
3609 return -EPERM;
3610
3611 if (count >= sizeof(kbuf))
3612 return -EINVAL;
3613
3614 if (copy_from_user(kbuf, buf, count))
3615 return -EOVERFLOW;
3616
3617 pkbuf = strstrip(kbuf);
3618
3619 for (i = 0; i < ARRAY_SIZE(hisi_sas_debugfs_loop_modes); i++) {
3620 if (!strncmp(hisi_sas_debugfs_loop_modes[i].name, pkbuf, 16)) {
3621 hisi_hba->debugfs_bist_mode =
3622 hisi_sas_debugfs_loop_modes[i].value;
3623 found = true;
3624 break;
3625 }
3626 }
3627
3628 if (!found)
3629 return -EINVAL;
3630
3631 return count;
3632}
3633
3634static int hisi_sas_debugfs_bist_mode_open(struct inode *inode,
3635 struct file *filp)
3636{
3637 return single_open(filp, hisi_sas_debugfs_bist_mode_show,
3638 inode->i_private);
3639}
3640
3641static const struct file_operations hisi_sas_debugfs_bist_mode_ops = {
3642 .open = hisi_sas_debugfs_bist_mode_open,
3643 .read = seq_read,
3644 .write = hisi_sas_debugfs_bist_mode_write,
3645 .llseek = seq_lseek,
3646 .release = single_release,
3647 .owner = THIS_MODULE,
3648};
3649
3650static ssize_t hisi_sas_debugfs_bist_enable_write(struct file *filp,
3651 const char __user *buf,
3652 size_t count, loff_t *ppos)
3653{
3654 struct seq_file *m = filp->private_data;
3655 struct hisi_hba *hisi_hba = m->private;
3656 unsigned int enable;
3657 int val;
3658
3659 val = kstrtouint_from_user(buf, count, 0, &enable);
3660 if (val)
3661 return val;
3662
3663 if (enable > 1)
3664 return -EINVAL;
3665
3666 if (enable == hisi_hba->debugfs_bist_enable)
3667 return count;
3668
3669 if (!hisi_hba->hw->set_bist)
3670 return -EPERM;
3671
3672 val = hisi_hba->hw->set_bist(hisi_hba, enable);
3673 if (val < 0)
3674 return val;
3675
3676 hisi_hba->debugfs_bist_enable = enable;
3677
3678 return count;
3679}
3680
3681static int hisi_sas_debugfs_bist_enable_show(struct seq_file *s, void *p)
3682{
3683 struct hisi_hba *hisi_hba = s->private;
3684
3685 seq_printf(s, "%d\n", hisi_hba->debugfs_bist_enable);
3686
3687 return 0;
3688}
3689
3690static int hisi_sas_debugfs_bist_enable_open(struct inode *inode,
3691 struct file *filp)
3692{
3693 return single_open(filp, hisi_sas_debugfs_bist_enable_show,
3694 inode->i_private);
3695}
3696
3697static const struct file_operations hisi_sas_debugfs_bist_enable_ops = {
3698 .open = hisi_sas_debugfs_bist_enable_open,
3699 .read = seq_read,
3700 .write = hisi_sas_debugfs_bist_enable_write,
3701 .llseek = seq_lseek,
3702 .release = single_release,
3703 .owner = THIS_MODULE,
3704};
3705
3706static ssize_t hisi_sas_debugfs_phy_down_cnt_write(struct file *filp,
3707 const char __user *buf,
3708 size_t count, loff_t *ppos)
3709{
3710 struct seq_file *s = filp->private_data;
3711 struct hisi_sas_phy *phy = s->private;
3712 unsigned int set_val;
3713 int res;
3714
3715 res = kstrtouint_from_user(buf, count, 0, &set_val);
3716 if (res)
3717 return res;
3718
3719 if (set_val > 0)
3720 return -EINVAL;
3721
3722 atomic_set(&phy->down_cnt, 0);
3723
3724 return count;
3725}
3726
3727static int hisi_sas_debugfs_phy_down_cnt_show(struct seq_file *s, void *p)
3728{
3729 struct hisi_sas_phy *phy = s->private;
3730
3731 seq_printf(s, "%d\n", atomic_read(&phy->down_cnt));
3732
3733 return 0;
3734}
3735
3736static int hisi_sas_debugfs_phy_down_cnt_open(struct inode *inode,
3737 struct file *filp)
3738{
3739 return single_open(filp, hisi_sas_debugfs_phy_down_cnt_show,
3740 inode->i_private);
3741}
3742
3743static const struct file_operations hisi_sas_debugfs_phy_down_cnt_ops = {
3744 .open = hisi_sas_debugfs_phy_down_cnt_open,
3745 .read = seq_read,
3746 .write = hisi_sas_debugfs_phy_down_cnt_write,
3747 .llseek = seq_lseek,
3748 .release = single_release,
3749 .owner = THIS_MODULE,
3750};
3751
3752void hisi_sas_debugfs_work_handler(struct work_struct *work)
3753{
3754 struct hisi_hba *hisi_hba =
3755 container_of(work, struct hisi_hba, debugfs_work);
3756 int debugfs_dump_index = hisi_hba->debugfs_dump_index;
3757 struct device *dev = hisi_hba->dev;
3758 u64 timestamp = local_clock();
3759
3760 if (debugfs_dump_index >= hisi_sas_debugfs_dump_count) {
3761 dev_warn(dev, "dump count exceeded!\n");
3762 return;
3763 }
3764
3765 do_div(timestamp, NSEC_PER_MSEC);
3766 hisi_hba->debugfs_timestamp[debugfs_dump_index] = timestamp;
3767
3768 hisi_sas_debugfs_snapshot_regs(hisi_hba);
3769 hisi_hba->debugfs_dump_index++;
3770}
3771EXPORT_SYMBOL_GPL(hisi_sas_debugfs_work_handler);
3772
3773static void hisi_sas_debugfs_release(struct hisi_hba *hisi_hba, int dump_index)
3774{
3775 struct device *dev = hisi_hba->dev;
3776 int i;
3777
3778 devm_kfree(dev, hisi_hba->debugfs_iost_cache[dump_index].cache);
3779 devm_kfree(dev, hisi_hba->debugfs_itct_cache[dump_index].cache);
3780 devm_kfree(dev, hisi_hba->debugfs_iost[dump_index].iost);
3781 devm_kfree(dev, hisi_hba->debugfs_itct[dump_index].itct);
3782
3783 for (i = 0; i < hisi_hba->queue_count; i++)
3784 devm_kfree(dev, hisi_hba->debugfs_dq[dump_index][i].hdr);
3785
3786 for (i = 0; i < hisi_hba->queue_count; i++)
3787 devm_kfree(dev,
3788 hisi_hba->debugfs_cq[dump_index][i].complete_hdr);
3789
3790 for (i = 0; i < DEBUGFS_REGS_NUM; i++)
3791 devm_kfree(dev, hisi_hba->debugfs_regs[dump_index][i].data);
3792
3793 for (i = 0; i < hisi_hba->n_phy; i++)
3794 devm_kfree(dev, hisi_hba->debugfs_port_reg[dump_index][i].data);
3795}
3796
3797static int hisi_sas_debugfs_alloc(struct hisi_hba *hisi_hba, int dump_index)
3798{
3799 const struct hisi_sas_hw *hw = hisi_hba->hw;
3800 struct device *dev = hisi_hba->dev;
3801 int p, c, d, r, i;
3802 size_t sz;
3803
3804 for (r = 0; r < DEBUGFS_REGS_NUM; r++) {
3805 struct hisi_sas_debugfs_regs *regs =
3806 &hisi_hba->debugfs_regs[dump_index][r];
3807
3808 sz = hw->debugfs_reg_array[r]->count * 4;
3809 regs->data = devm_kmalloc(dev, sz, GFP_KERNEL);
3810 if (!regs->data)
3811 goto fail;
3812 regs->hisi_hba = hisi_hba;
3813 }
3814
3815 sz = hw->debugfs_reg_port->count * 4;
3816 for (p = 0; p < hisi_hba->n_phy; p++) {
3817 struct hisi_sas_debugfs_port *port =
3818 &hisi_hba->debugfs_port_reg[dump_index][p];
3819
3820 port->data = devm_kmalloc(dev, sz, GFP_KERNEL);
3821 if (!port->data)
3822 goto fail;
3823 port->phy = &hisi_hba->phy[p];
3824 }
3825
3826 sz = hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
3827 for (c = 0; c < hisi_hba->queue_count; c++) {
3828 struct hisi_sas_debugfs_cq *cq =
3829 &hisi_hba->debugfs_cq[dump_index][c];
3830
3831 cq->complete_hdr = devm_kmalloc(dev, sz, GFP_KERNEL);
3832 if (!cq->complete_hdr)
3833 goto fail;
3834 cq->cq = &hisi_hba->cq[c];
3835 }
3836
3837 sz = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
3838 for (d = 0; d < hisi_hba->queue_count; d++) {
3839 struct hisi_sas_debugfs_dq *dq =
3840 &hisi_hba->debugfs_dq[dump_index][d];
3841
3842 dq->hdr = devm_kmalloc(dev, sz, GFP_KERNEL);
3843 if (!dq->hdr)
3844 goto fail;
3845 dq->dq = &hisi_hba->dq[d];
3846 }
3847
3848 sz = HISI_SAS_MAX_COMMANDS * sizeof(struct hisi_sas_iost);
3849
3850 hisi_hba->debugfs_iost[dump_index].iost =
3851 devm_kmalloc(dev, sz, GFP_KERNEL);
3852 if (!hisi_hba->debugfs_iost[dump_index].iost)
3853 goto fail;
3854
3855 sz = HISI_SAS_IOST_ITCT_CACHE_NUM *
3856 sizeof(struct hisi_sas_iost_itct_cache);
3857
3858 hisi_hba->debugfs_iost_cache[dump_index].cache =
3859 devm_kmalloc(dev, sz, GFP_KERNEL);
3860 if (!hisi_hba->debugfs_iost_cache[dump_index].cache)
3861 goto fail;
3862
3863 sz = HISI_SAS_IOST_ITCT_CACHE_NUM *
3864 sizeof(struct hisi_sas_iost_itct_cache);
3865
3866 hisi_hba->debugfs_itct_cache[dump_index].cache =
3867 devm_kmalloc(dev, sz, GFP_KERNEL);
3868 if (!hisi_hba->debugfs_itct_cache[dump_index].cache)
3869 goto fail;
3870
3871
3872 sz = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
3873
3874 hisi_hba->debugfs_itct[dump_index].itct =
3875 devm_kmalloc(dev, sz, GFP_KERNEL);
3876 if (!hisi_hba->debugfs_itct[dump_index].itct)
3877 goto fail;
3878
3879 return 0;
3880fail:
3881 for (i = 0; i < hisi_sas_debugfs_dump_count; i++)
3882 hisi_sas_debugfs_release(hisi_hba, i);
3883 return -ENOMEM;
3884}
3885
3886static void hisi_sas_debugfs_phy_down_cnt_init(struct hisi_hba *hisi_hba)
3887{
3888 struct dentry *dir = debugfs_create_dir("phy_down_cnt",
3889 hisi_hba->debugfs_dir);
3890 char name[16];
3891 int phy_no;
3892
3893 for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) {
3894 snprintf(name, 16, "%d", phy_no);
3895 debugfs_create_file(name, 0600, dir,
3896 &hisi_hba->phy[phy_no],
3897 &hisi_sas_debugfs_phy_down_cnt_ops);
3898 }
3899}
3900
3901static void hisi_sas_debugfs_bist_init(struct hisi_hba *hisi_hba)
3902{
3903 hisi_hba->debugfs_bist_dentry =
3904 debugfs_create_dir("bist", hisi_hba->debugfs_dir);
3905 debugfs_create_file("link_rate", 0600,
3906 hisi_hba->debugfs_bist_dentry, hisi_hba,
3907 &hisi_sas_debugfs_bist_linkrate_ops);
3908
3909 debugfs_create_file("code_mode", 0600,
3910 hisi_hba->debugfs_bist_dentry, hisi_hba,
3911 &hisi_sas_debugfs_bist_code_mode_ops);
3912
3913 debugfs_create_file("phy_id", 0600, hisi_hba->debugfs_bist_dentry,
3914 hisi_hba, &hisi_sas_debugfs_bist_phy_ops);
3915
3916 debugfs_create_u32("cnt", 0600, hisi_hba->debugfs_bist_dentry,
3917 &hisi_hba->debugfs_bist_cnt);
3918
3919 debugfs_create_file("loopback_mode", 0600,
3920 hisi_hba->debugfs_bist_dentry,
3921 hisi_hba, &hisi_sas_debugfs_bist_mode_ops);
3922
3923 debugfs_create_file("enable", 0600, hisi_hba->debugfs_bist_dentry,
3924 hisi_hba, &hisi_sas_debugfs_bist_enable_ops);
3925
3926 hisi_hba->debugfs_bist_linkrate = SAS_LINK_RATE_1_5_GBPS;
3927}
3928
3929void hisi_sas_debugfs_init(struct hisi_hba *hisi_hba)
3930{
3931 struct device *dev = hisi_hba->dev;
3932 int i;
3933
3934 hisi_hba->debugfs_dir = debugfs_create_dir(dev_name(dev),
3935 hisi_sas_debugfs_dir);
3936 debugfs_create_file("trigger_dump", 0200,
3937 hisi_hba->debugfs_dir,
3938 hisi_hba,
3939 &hisi_sas_debugfs_trigger_dump_fops);
3940
3941
3942 hisi_sas_debugfs_bist_init(hisi_hba);
3943
3944 hisi_hba->debugfs_dump_dentry =
3945 debugfs_create_dir("dump", hisi_hba->debugfs_dir);
3946
3947 hisi_sas_debugfs_phy_down_cnt_init(hisi_hba);
3948
3949 for (i = 0; i < hisi_sas_debugfs_dump_count; i++) {
3950 if (hisi_sas_debugfs_alloc(hisi_hba, i)) {
3951 debugfs_remove_recursive(hisi_hba->debugfs_dir);
3952 dev_dbg(dev, "failed to init debugfs!\n");
3953 break;
3954 }
3955 }
3956}
3957EXPORT_SYMBOL_GPL(hisi_sas_debugfs_init);
3958
3959void hisi_sas_debugfs_exit(struct hisi_hba *hisi_hba)
3960{
3961 debugfs_remove_recursive(hisi_hba->debugfs_dir);
3962}
3963EXPORT_SYMBOL_GPL(hisi_sas_debugfs_exit);
3964
3965int hisi_sas_remove(struct platform_device *pdev)
3966{
3967 struct sas_ha_struct *sha = platform_get_drvdata(pdev);
3968 struct hisi_hba *hisi_hba = sha->lldd_ha;
3969 struct Scsi_Host *shost = sha->core.shost;
3970
3971 if (timer_pending(&hisi_hba->timer))
3972 del_timer(&hisi_hba->timer);
3973
3974 sas_unregister_ha(sha);
3975 sas_remove_host(sha->core.shost);
3976
3977 hisi_sas_free(hisi_hba);
3978 scsi_host_put(shost);
3979 return 0;
3980}
3981EXPORT_SYMBOL_GPL(hisi_sas_remove);
3982
3983bool hisi_sas_debugfs_enable;
3984EXPORT_SYMBOL_GPL(hisi_sas_debugfs_enable);
3985module_param_named(debugfs_enable, hisi_sas_debugfs_enable, bool, 0444);
3986MODULE_PARM_DESC(hisi_sas_debugfs_enable, "Enable driver debugfs (default disabled)");
3987
3988u32 hisi_sas_debugfs_dump_count = 1;
3989EXPORT_SYMBOL_GPL(hisi_sas_debugfs_dump_count);
3990module_param_named(debugfs_dump_count, hisi_sas_debugfs_dump_count, uint, 0444);
3991MODULE_PARM_DESC(hisi_sas_debugfs_dump_count, "Number of debugfs dumps to allow");
3992
3993static __init int hisi_sas_init(void)
3994{
3995 hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops);
3996 if (!hisi_sas_stt)
3997 return -ENOMEM;
3998
3999 if (hisi_sas_debugfs_enable) {
4000 hisi_sas_debugfs_dir = debugfs_create_dir("hisi_sas", NULL);
4001 if (hisi_sas_debugfs_dump_count > HISI_SAS_MAX_DEBUGFS_DUMP) {
4002 pr_info("hisi_sas: Limiting debugfs dump count\n");
4003 hisi_sas_debugfs_dump_count = HISI_SAS_MAX_DEBUGFS_DUMP;
4004 }
4005 }
4006
4007 return 0;
4008}
4009
4010static __exit void hisi_sas_exit(void)
4011{
4012 sas_release_transport(hisi_sas_stt);
4013
4014 debugfs_remove(hisi_sas_debugfs_dir);
4015}
4016
4017module_init(hisi_sas_init);
4018module_exit(hisi_sas_exit);
4019
4020MODULE_LICENSE("GPL");
4021MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
4022MODULE_DESCRIPTION("HISILICON SAS controller driver");
4023MODULE_ALIAS("platform:" DRV_NAME);
4024