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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, bool rst_to_recover);
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_cmd_to_rq(scsi_cmnd)->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 if (slot->n_elem)
233 dma_unmap_sg(dev, task->scatter,
234 task->num_scatter,
235 task->data_dir);
236 if (slot->n_elem_dif) {
237 struct sas_ssp_task *ssp_task = &task->ssp_task;
238 struct scsi_cmnd *scsi_cmnd = ssp_task->cmd;
239
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
247 spin_lock(&sas_dev->lock);
248 list_del_init(&slot->entry);
249 spin_unlock(&sas_dev->lock);
250
251 memset(slot, 0, offsetof(struct hisi_sas_slot, buf));
252
253 hisi_sas_slot_index_free(hisi_hba, slot->idx);
254}
255EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free);
256
257static void hisi_sas_task_prep_smp(struct hisi_hba *hisi_hba,
258 struct hisi_sas_slot *slot)
259{
260 hisi_hba->hw->prep_smp(hisi_hba, slot);
261}
262
263static void hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba,
264 struct hisi_sas_slot *slot)
265{
266 hisi_hba->hw->prep_ssp(hisi_hba, slot);
267}
268
269static void hisi_sas_task_prep_ata(struct hisi_hba *hisi_hba,
270 struct hisi_sas_slot *slot)
271{
272 hisi_hba->hw->prep_stp(hisi_hba, slot);
273}
274
275static void hisi_sas_task_prep_abort(struct hisi_hba *hisi_hba,
276 struct hisi_sas_slot *slot,
277 int device_id, int abort_flag, int tag_to_abort)
278{
279 hisi_hba->hw->prep_abort(hisi_hba, slot,
280 device_id, abort_flag, tag_to_abort);
281}
282
283static void hisi_sas_dma_unmap(struct hisi_hba *hisi_hba,
284 struct sas_task *task, int n_elem,
285 int n_elem_req)
286{
287 struct device *dev = hisi_hba->dev;
288
289 if (!sas_protocol_ata(task->task_proto)) {
290 if (task->num_scatter) {
291 if (n_elem)
292 dma_unmap_sg(dev, task->scatter,
293 task->num_scatter,
294 task->data_dir);
295 } else if (task->task_proto & SAS_PROTOCOL_SMP) {
296 if (n_elem_req)
297 dma_unmap_sg(dev, &task->smp_task.smp_req,
298 1, DMA_TO_DEVICE);
299 }
300 }
301}
302
303static int hisi_sas_dma_map(struct hisi_hba *hisi_hba,
304 struct sas_task *task, int *n_elem,
305 int *n_elem_req)
306{
307 struct device *dev = hisi_hba->dev;
308 int rc;
309
310 if (sas_protocol_ata(task->task_proto)) {
311 *n_elem = task->num_scatter;
312 } else {
313 unsigned int req_len;
314
315 if (task->num_scatter) {
316 *n_elem = dma_map_sg(dev, task->scatter,
317 task->num_scatter, task->data_dir);
318 if (!*n_elem) {
319 rc = -ENOMEM;
320 goto prep_out;
321 }
322 } else if (task->task_proto & SAS_PROTOCOL_SMP) {
323 *n_elem_req = dma_map_sg(dev, &task->smp_task.smp_req,
324 1, DMA_TO_DEVICE);
325 if (!*n_elem_req) {
326 rc = -ENOMEM;
327 goto prep_out;
328 }
329 req_len = sg_dma_len(&task->smp_task.smp_req);
330 if (req_len & 0x3) {
331 rc = -EINVAL;
332 goto err_out_dma_unmap;
333 }
334 }
335 }
336
337 if (*n_elem > HISI_SAS_SGE_PAGE_CNT) {
338 dev_err(dev, "task prep: n_elem(%d) > HISI_SAS_SGE_PAGE_CNT\n",
339 *n_elem);
340 rc = -EINVAL;
341 goto err_out_dma_unmap;
342 }
343 return 0;
344
345err_out_dma_unmap:
346
347 hisi_sas_dma_unmap(hisi_hba, task, *n_elem,
348 *n_elem_req);
349prep_out:
350 return rc;
351}
352
353static void hisi_sas_dif_dma_unmap(struct hisi_hba *hisi_hba,
354 struct sas_task *task, int n_elem_dif)
355{
356 struct device *dev = hisi_hba->dev;
357
358 if (n_elem_dif) {
359 struct sas_ssp_task *ssp_task = &task->ssp_task;
360 struct scsi_cmnd *scsi_cmnd = ssp_task->cmd;
361
362 dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd),
363 scsi_prot_sg_count(scsi_cmnd),
364 task->data_dir);
365 }
366}
367
368static int hisi_sas_dif_dma_map(struct hisi_hba *hisi_hba,
369 int *n_elem_dif, struct sas_task *task)
370{
371 struct device *dev = hisi_hba->dev;
372 struct sas_ssp_task *ssp_task;
373 struct scsi_cmnd *scsi_cmnd;
374 int rc;
375
376 if (task->num_scatter) {
377 ssp_task = &task->ssp_task;
378 scsi_cmnd = ssp_task->cmd;
379
380 if (scsi_prot_sg_count(scsi_cmnd)) {
381 *n_elem_dif = dma_map_sg(dev,
382 scsi_prot_sglist(scsi_cmnd),
383 scsi_prot_sg_count(scsi_cmnd),
384 task->data_dir);
385
386 if (!*n_elem_dif)
387 return -ENOMEM;
388
389 if (*n_elem_dif > HISI_SAS_SGE_DIF_PAGE_CNT) {
390 dev_err(dev, "task prep: n_elem_dif(%d) too large\n",
391 *n_elem_dif);
392 rc = -EINVAL;
393 goto err_out_dif_dma_unmap;
394 }
395 }
396 }
397
398 return 0;
399
400err_out_dif_dma_unmap:
401 dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd),
402 scsi_prot_sg_count(scsi_cmnd), task->data_dir);
403 return rc;
404}
405
406static int hisi_sas_task_prep(struct sas_task *task,
407 struct hisi_sas_dq **dq_pointer,
408 bool is_tmf, struct hisi_sas_tmf_task *tmf,
409 int *pass)
410{
411 struct domain_device *device = task->dev;
412 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
413 struct hisi_sas_device *sas_dev = device->lldd_dev;
414 struct hisi_sas_port *port;
415 struct hisi_sas_slot *slot;
416 struct hisi_sas_cmd_hdr *cmd_hdr_base;
417 struct asd_sas_port *sas_port = device->port;
418 struct device *dev = hisi_hba->dev;
419 int dlvry_queue_slot, dlvry_queue, rc, slot_idx;
420 int n_elem = 0, n_elem_dif = 0, n_elem_req = 0;
421 struct scsi_cmnd *scmd = NULL;
422 struct hisi_sas_dq *dq;
423 unsigned long flags;
424 int wr_q_index;
425
426 if (DEV_IS_GONE(sas_dev)) {
427 if (sas_dev)
428 dev_info(dev, "task prep: device %d not ready\n",
429 sas_dev->device_id);
430 else
431 dev_info(dev, "task prep: device %016llx not ready\n",
432 SAS_ADDR(device->sas_addr));
433
434 return -ECOMM;
435 }
436
437 if (task->uldd_task) {
438 struct ata_queued_cmd *qc;
439
440 if (dev_is_sata(device)) {
441 qc = task->uldd_task;
442 scmd = qc->scsicmd;
443 } else {
444 scmd = task->uldd_task;
445 }
446 }
447
448 if (scmd) {
449 unsigned int dq_index;
450 u32 blk_tag;
451
452 blk_tag = blk_mq_unique_tag(scsi_cmd_to_rq(scmd));
453 dq_index = blk_mq_unique_tag_to_hwq(blk_tag);
454 *dq_pointer = dq = &hisi_hba->dq[dq_index];
455 } else {
456 struct Scsi_Host *shost = hisi_hba->shost;
457 struct blk_mq_queue_map *qmap = &shost->tag_set.map[HCTX_TYPE_DEFAULT];
458 int queue = qmap->mq_map[raw_smp_processor_id()];
459
460 *dq_pointer = dq = &hisi_hba->dq[queue];
461 }
462
463 port = to_hisi_sas_port(sas_port);
464 if (port && !port->port_attached) {
465 dev_info(dev, "task prep: %s port%d not attach device\n",
466 (dev_is_sata(device)) ?
467 "SATA/STP" : "SAS",
468 device->port->id);
469
470 return -ECOMM;
471 }
472
473 rc = hisi_sas_dma_map(hisi_hba, task, &n_elem,
474 &n_elem_req);
475 if (rc < 0)
476 goto prep_out;
477
478 if (!sas_protocol_ata(task->task_proto)) {
479 rc = hisi_sas_dif_dma_map(hisi_hba, &n_elem_dif, task);
480 if (rc < 0)
481 goto err_out_dma_unmap;
482 }
483
484 if (hisi_hba->hw->slot_index_alloc)
485 rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device);
486 else
487 rc = hisi_sas_slot_index_alloc(hisi_hba, scmd);
488
489 if (rc < 0)
490 goto err_out_dif_dma_unmap;
491
492 slot_idx = rc;
493 slot = &hisi_hba->slot_info[slot_idx];
494
495 spin_lock(&dq->lock);
496 wr_q_index = dq->wr_point;
497 dq->wr_point = (dq->wr_point + 1) % HISI_SAS_QUEUE_SLOTS;
498 list_add_tail(&slot->delivery, &dq->list);
499 spin_unlock(&dq->lock);
500 spin_lock(&sas_dev->lock);
501 list_add_tail(&slot->entry, &sas_dev->list);
502 spin_unlock(&sas_dev->lock);
503
504 dlvry_queue = dq->id;
505 dlvry_queue_slot = wr_q_index;
506
507 slot->device_id = sas_dev->device_id;
508 slot->n_elem = n_elem;
509 slot->n_elem_dif = n_elem_dif;
510 slot->dlvry_queue = dlvry_queue;
511 slot->dlvry_queue_slot = dlvry_queue_slot;
512 cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
513 slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
514 slot->task = task;
515 slot->port = port;
516 slot->tmf = tmf;
517 slot->is_internal = is_tmf;
518 task->lldd_task = slot;
519
520 memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
521 memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ);
522 memset(hisi_sas_status_buf_addr_mem(slot), 0,
523 sizeof(struct hisi_sas_err_record));
524
525 switch (task->task_proto) {
526 case SAS_PROTOCOL_SMP:
527 hisi_sas_task_prep_smp(hisi_hba, slot);
528 break;
529 case SAS_PROTOCOL_SSP:
530 hisi_sas_task_prep_ssp(hisi_hba, slot);
531 break;
532 case SAS_PROTOCOL_SATA:
533 case SAS_PROTOCOL_STP:
534 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
535 hisi_sas_task_prep_ata(hisi_hba, slot);
536 break;
537 default:
538 dev_err(dev, "task prep: unknown/unsupported proto (0x%x)\n",
539 task->task_proto);
540 break;
541 }
542
543 spin_lock_irqsave(&task->task_state_lock, flags);
544 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
545 spin_unlock_irqrestore(&task->task_state_lock, flags);
546
547 ++(*pass);
548 WRITE_ONCE(slot->ready, 1);
549
550 return 0;
551
552err_out_dif_dma_unmap:
553 if (!sas_protocol_ata(task->task_proto))
554 hisi_sas_dif_dma_unmap(hisi_hba, task, n_elem_dif);
555err_out_dma_unmap:
556 hisi_sas_dma_unmap(hisi_hba, task, n_elem,
557 n_elem_req);
558prep_out:
559 dev_err(dev, "task prep: failed[%d]!\n", rc);
560 return rc;
561}
562
563static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags,
564 bool is_tmf, struct hisi_sas_tmf_task *tmf)
565{
566 u32 rc;
567 u32 pass = 0;
568 struct hisi_hba *hisi_hba;
569 struct device *dev;
570 struct domain_device *device = task->dev;
571 struct asd_sas_port *sas_port = device->port;
572 struct hisi_sas_dq *dq = NULL;
573
574 if (!sas_port) {
575 struct task_status_struct *ts = &task->task_status;
576
577 ts->resp = SAS_TASK_UNDELIVERED;
578 ts->stat = SAS_PHY_DOWN;
579
580
581
582
583 if (device->dev_type != SAS_SATA_DEV)
584 task->task_done(task);
585 return -ECOMM;
586 }
587
588 hisi_hba = dev_to_hisi_hba(device);
589 dev = hisi_hba->dev;
590
591 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags))) {
592 if (!gfpflags_allow_blocking(gfp_flags))
593 return -EINVAL;
594
595 down(&hisi_hba->sem);
596 up(&hisi_hba->sem);
597 }
598
599
600 rc = hisi_sas_task_prep(task, &dq, is_tmf, tmf, &pass);
601 if (rc)
602 dev_err(dev, "task exec: failed[%d]!\n", rc);
603
604 if (likely(pass)) {
605 spin_lock(&dq->lock);
606 hisi_hba->hw->start_delivery(dq);
607 spin_unlock(&dq->lock);
608 }
609
610 return rc;
611}
612
613static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no,
614 gfp_t gfp_flags)
615{
616 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
617 struct asd_sas_phy *sas_phy = &phy->sas_phy;
618
619 if (!phy->phy_attached)
620 return;
621
622 if (test_bit(HISI_SAS_PM_BIT, &hisi_hba->flags) &&
623 !sas_phy->suspended) {
624 dev_warn(hisi_hba->dev, "phy%d during suspend filtered out\n", phy_no);
625 return;
626 }
627
628 sas_notify_phy_event(sas_phy, PHYE_OOB_DONE, gfp_flags);
629
630 if (sas_phy->phy) {
631 struct sas_phy *sphy = sas_phy->phy;
632
633 sphy->negotiated_linkrate = sas_phy->linkrate;
634 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
635 sphy->maximum_linkrate_hw =
636 hisi_hba->hw->phy_get_max_linkrate();
637 if (sphy->minimum_linkrate == SAS_LINK_RATE_UNKNOWN)
638 sphy->minimum_linkrate = phy->minimum_linkrate;
639
640 if (sphy->maximum_linkrate == SAS_LINK_RATE_UNKNOWN)
641 sphy->maximum_linkrate = phy->maximum_linkrate;
642 }
643
644 if (phy->phy_type & PORT_TYPE_SAS) {
645 struct sas_identify_frame *id;
646
647 id = (struct sas_identify_frame *)phy->frame_rcvd;
648 id->dev_type = phy->identify.device_type;
649 id->initiator_bits = SAS_PROTOCOL_ALL;
650 id->target_bits = phy->identify.target_port_protocols;
651 } else if (phy->phy_type & PORT_TYPE_SATA) {
652
653 }
654
655 sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
656 sas_notify_port_event(sas_phy, PORTE_BYTES_DMAED, gfp_flags);
657}
658
659static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device)
660{
661 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
662 struct hisi_sas_device *sas_dev = NULL;
663 int last = hisi_hba->last_dev_id;
664 int first = (hisi_hba->last_dev_id + 1) % HISI_SAS_MAX_DEVICES;
665 int i;
666
667 spin_lock(&hisi_hba->lock);
668 for (i = first; i != last; i %= HISI_SAS_MAX_DEVICES) {
669 if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) {
670 int queue = i % hisi_hba->queue_count;
671 struct hisi_sas_dq *dq = &hisi_hba->dq[queue];
672
673 hisi_hba->devices[i].device_id = i;
674 sas_dev = &hisi_hba->devices[i];
675 sas_dev->dev_status = HISI_SAS_DEV_INIT;
676 sas_dev->dev_type = device->dev_type;
677 sas_dev->hisi_hba = hisi_hba;
678 sas_dev->sas_device = device;
679 sas_dev->dq = dq;
680 spin_lock_init(&sas_dev->lock);
681 INIT_LIST_HEAD(&hisi_hba->devices[i].list);
682 break;
683 }
684 i++;
685 }
686 hisi_hba->last_dev_id = i;
687 spin_unlock(&hisi_hba->lock);
688
689 return sas_dev;
690}
691
692#define HISI_SAS_DISK_RECOVER_CNT 3
693static int hisi_sas_init_device(struct domain_device *device)
694{
695 int rc = TMF_RESP_FUNC_COMPLETE;
696 struct scsi_lun lun;
697 struct hisi_sas_tmf_task tmf_task;
698 int retry = HISI_SAS_DISK_RECOVER_CNT;
699 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
700 struct device *dev = hisi_hba->dev;
701 struct sas_phy *local_phy;
702
703 switch (device->dev_type) {
704 case SAS_END_DEVICE:
705 int_to_scsilun(0, &lun);
706
707 tmf_task.tmf = TMF_CLEAR_TASK_SET;
708 while (retry-- > 0) {
709 rc = hisi_sas_debug_issue_ssp_tmf(device, lun.scsi_lun,
710 &tmf_task);
711 if (rc == TMF_RESP_FUNC_COMPLETE) {
712 hisi_sas_release_task(hisi_hba, device);
713 break;
714 }
715 }
716 break;
717 case SAS_SATA_DEV:
718 case SAS_SATA_PM:
719 case SAS_SATA_PM_PORT:
720 case SAS_SATA_PENDING:
721
722
723
724
725 local_phy = sas_get_local_phy(device);
726 if (!scsi_is_sas_phy_local(local_phy) &&
727 !test_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags)) {
728 unsigned long deadline = ata_deadline(jiffies, 20000);
729 struct sata_device *sata_dev = &device->sata_dev;
730 struct ata_host *ata_host = sata_dev->ata_host;
731 struct ata_port_operations *ops = ata_host->ops;
732 struct ata_port *ap = sata_dev->ap;
733 struct ata_link *link;
734 unsigned int classes;
735
736 ata_for_each_link(link, ap, EDGE)
737 rc = ops->hardreset(link, &classes,
738 deadline);
739 }
740 sas_put_local_phy(local_phy);
741 if (rc) {
742 dev_warn(dev, "SATA disk hardreset fail: %d\n", rc);
743 return rc;
744 }
745
746 while (retry-- > 0) {
747 rc = hisi_sas_softreset_ata_disk(device);
748 if (!rc)
749 break;
750 }
751 break;
752 default:
753 break;
754 }
755
756 return rc;
757}
758
759int hisi_sas_slave_alloc(struct scsi_device *sdev)
760{
761 struct domain_device *ddev;
762 int rc;
763
764 rc = sas_slave_alloc(sdev);
765 if (rc)
766 return rc;
767 ddev = sdev_to_domain_dev(sdev);
768
769 return hisi_sas_init_device(ddev);
770}
771EXPORT_SYMBOL_GPL(hisi_sas_slave_alloc);
772
773static int hisi_sas_dev_found(struct domain_device *device)
774{
775 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
776 struct domain_device *parent_dev = device->parent;
777 struct hisi_sas_device *sas_dev;
778 struct device *dev = hisi_hba->dev;
779 int rc;
780
781 if (hisi_hba->hw->alloc_dev)
782 sas_dev = hisi_hba->hw->alloc_dev(device);
783 else
784 sas_dev = hisi_sas_alloc_dev(device);
785 if (!sas_dev) {
786 dev_err(dev, "fail alloc dev: max support %d devices\n",
787 HISI_SAS_MAX_DEVICES);
788 return -EINVAL;
789 }
790
791 device->lldd_dev = sas_dev;
792 hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
793
794 if (parent_dev && dev_is_expander(parent_dev->dev_type)) {
795 int phy_no;
796 u8 phy_num = parent_dev->ex_dev.num_phys;
797 struct ex_phy *phy;
798
799 for (phy_no = 0; phy_no < phy_num; phy_no++) {
800 phy = &parent_dev->ex_dev.ex_phy[phy_no];
801 if (SAS_ADDR(phy->attached_sas_addr) ==
802 SAS_ADDR(device->sas_addr))
803 break;
804 }
805
806 if (phy_no == phy_num) {
807 dev_info(dev, "dev found: no attached "
808 "dev:%016llx at ex:%016llx\n",
809 SAS_ADDR(device->sas_addr),
810 SAS_ADDR(parent_dev->sas_addr));
811 rc = -EINVAL;
812 goto err_out;
813 }
814 }
815
816 dev_info(dev, "dev[%d:%x] found\n",
817 sas_dev->device_id, sas_dev->dev_type);
818
819 sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
820 return 0;
821
822err_out:
823 hisi_sas_dev_gone(device);
824 return rc;
825}
826
827int hisi_sas_slave_configure(struct scsi_device *sdev)
828{
829 struct domain_device *dev = sdev_to_domain_dev(sdev);
830 int ret = sas_slave_configure(sdev);
831
832 if (ret)
833 return ret;
834 if (!dev_is_sata(dev))
835 sas_change_queue_depth(sdev, 64);
836
837 return 0;
838}
839EXPORT_SYMBOL_GPL(hisi_sas_slave_configure);
840
841void hisi_sas_scan_start(struct Scsi_Host *shost)
842{
843 struct hisi_hba *hisi_hba = shost_priv(shost);
844
845 hisi_hba->hw->phys_init(hisi_hba);
846}
847EXPORT_SYMBOL_GPL(hisi_sas_scan_start);
848
849int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time)
850{
851 struct hisi_hba *hisi_hba = shost_priv(shost);
852 struct sas_ha_struct *sha = &hisi_hba->sha;
853
854
855 if (time < HZ)
856 return 0;
857
858 sas_drain_work(sha);
859 return 1;
860}
861EXPORT_SYMBOL_GPL(hisi_sas_scan_finished);
862
863static void hisi_sas_phyup_work(struct work_struct *work)
864{
865 struct hisi_sas_phy *phy =
866 container_of(work, typeof(*phy), works[HISI_PHYE_PHY_UP]);
867 struct hisi_hba *hisi_hba = phy->hisi_hba;
868 struct asd_sas_phy *sas_phy = &phy->sas_phy;
869 int phy_no = sas_phy->id;
870
871 phy->wait_phyup_cnt = 0;
872 if (phy->identify.target_port_protocols == SAS_PROTOCOL_SSP)
873 hisi_hba->hw->sl_notify_ssp(hisi_hba, phy_no);
874 hisi_sas_bytes_dmaed(hisi_hba, phy_no, GFP_KERNEL);
875}
876
877static void hisi_sas_linkreset_work(struct work_struct *work)
878{
879 struct hisi_sas_phy *phy =
880 container_of(work, typeof(*phy), works[HISI_PHYE_LINK_RESET]);
881 struct asd_sas_phy *sas_phy = &phy->sas_phy;
882
883 hisi_sas_control_phy(sas_phy, PHY_FUNC_LINK_RESET, NULL);
884}
885
886static const work_func_t hisi_sas_phye_fns[HISI_PHYES_NUM] = {
887 [HISI_PHYE_PHY_UP] = hisi_sas_phyup_work,
888 [HISI_PHYE_LINK_RESET] = hisi_sas_linkreset_work,
889};
890
891bool hisi_sas_notify_phy_event(struct hisi_sas_phy *phy,
892 enum hisi_sas_phy_event event)
893{
894 struct hisi_hba *hisi_hba = phy->hisi_hba;
895
896 if (WARN_ON(event >= HISI_PHYES_NUM))
897 return false;
898
899 return queue_work(hisi_hba->wq, &phy->works[event]);
900}
901EXPORT_SYMBOL_GPL(hisi_sas_notify_phy_event);
902
903static void hisi_sas_wait_phyup_timedout(struct timer_list *t)
904{
905 struct hisi_sas_phy *phy = from_timer(phy, t, timer);
906 struct hisi_hba *hisi_hba = phy->hisi_hba;
907 struct device *dev = hisi_hba->dev;
908 int phy_no = phy->sas_phy.id;
909
910 dev_warn(dev, "phy%d wait phyup timeout, issuing link reset\n", phy_no);
911 hisi_sas_notify_phy_event(phy, HISI_PHYE_LINK_RESET);
912}
913
914#define HISI_SAS_WAIT_PHYUP_RETRIES 10
915
916void hisi_sas_phy_oob_ready(struct hisi_hba *hisi_hba, int phy_no)
917{
918 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
919 struct device *dev = hisi_hba->dev;
920
921 dev_dbg(dev, "phy%d OOB ready\n", phy_no);
922 if (phy->phy_attached)
923 return;
924
925 if (!timer_pending(&phy->timer)) {
926 if (phy->wait_phyup_cnt < HISI_SAS_WAIT_PHYUP_RETRIES) {
927 phy->wait_phyup_cnt++;
928 phy->timer.expires = jiffies +
929 HISI_SAS_WAIT_PHYUP_TIMEOUT;
930 add_timer(&phy->timer);
931 } else {
932 dev_warn(dev, "phy%d failed to come up %d times, giving up\n",
933 phy_no, phy->wait_phyup_cnt);
934 phy->wait_phyup_cnt = 0;
935 }
936 }
937}
938EXPORT_SYMBOL_GPL(hisi_sas_phy_oob_ready);
939
940static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no)
941{
942 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
943 struct asd_sas_phy *sas_phy = &phy->sas_phy;
944 int i;
945
946 phy->hisi_hba = hisi_hba;
947 phy->port = NULL;
948 phy->minimum_linkrate = SAS_LINK_RATE_1_5_GBPS;
949 phy->maximum_linkrate = hisi_hba->hw->phy_get_max_linkrate();
950 sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0;
951 sas_phy->class = SAS;
952 sas_phy->iproto = SAS_PROTOCOL_ALL;
953 sas_phy->tproto = 0;
954 sas_phy->type = PHY_TYPE_PHYSICAL;
955 sas_phy->role = PHY_ROLE_INITIATOR;
956 sas_phy->oob_mode = OOB_NOT_CONNECTED;
957 sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
958 sas_phy->id = phy_no;
959 sas_phy->sas_addr = &hisi_hba->sas_addr[0];
960 sas_phy->frame_rcvd = &phy->frame_rcvd[0];
961 sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata;
962 sas_phy->lldd_phy = phy;
963
964 for (i = 0; i < HISI_PHYES_NUM; i++)
965 INIT_WORK(&phy->works[i], hisi_sas_phye_fns[i]);
966
967 spin_lock_init(&phy->lock);
968
969 timer_setup(&phy->timer, hisi_sas_wait_phyup_timedout, 0);
970}
971
972
973void hisi_sas_phy_enable(struct hisi_hba *hisi_hba, int phy_no, int enable)
974{
975 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
976 struct asd_sas_phy *aphy = &phy->sas_phy;
977 struct sas_phy *sphy = aphy->phy;
978 unsigned long flags;
979
980 spin_lock_irqsave(&phy->lock, flags);
981
982 if (enable) {
983
984 if (!phy->enable)
985 sphy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
986 hisi_hba->hw->phy_start(hisi_hba, phy_no);
987 } else {
988 sphy->negotiated_linkrate = SAS_PHY_DISABLED;
989 hisi_hba->hw->phy_disable(hisi_hba, phy_no);
990 }
991 phy->enable = enable;
992 spin_unlock_irqrestore(&phy->lock, flags);
993}
994EXPORT_SYMBOL_GPL(hisi_sas_phy_enable);
995
996static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy)
997{
998 struct sas_ha_struct *sas_ha = sas_phy->ha;
999 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
1000 struct hisi_sas_phy *phy = sas_phy->lldd_phy;
1001 struct asd_sas_port *sas_port = sas_phy->port;
1002 struct hisi_sas_port *port;
1003 unsigned long flags;
1004
1005 if (!sas_port)
1006 return;
1007
1008 port = to_hisi_sas_port(sas_port);
1009 spin_lock_irqsave(&hisi_hba->lock, flags);
1010 port->port_attached = 1;
1011 port->id = phy->port_id;
1012 phy->port = port;
1013 sas_port->lldd_port = port;
1014 spin_unlock_irqrestore(&hisi_hba->lock, flags);
1015}
1016
1017static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, struct sas_task *task,
1018 struct hisi_sas_slot *slot)
1019{
1020 if (task) {
1021 unsigned long flags;
1022 struct task_status_struct *ts;
1023
1024 ts = &task->task_status;
1025
1026 ts->resp = SAS_TASK_COMPLETE;
1027 ts->stat = SAS_ABORTED_TASK;
1028 spin_lock_irqsave(&task->task_state_lock, flags);
1029 task->task_state_flags &=
1030 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1031 if (!slot->is_internal && task->task_proto != SAS_PROTOCOL_SMP)
1032 task->task_state_flags |= SAS_TASK_STATE_DONE;
1033 spin_unlock_irqrestore(&task->task_state_lock, flags);
1034 }
1035
1036 hisi_sas_slot_task_free(hisi_hba, task, slot);
1037}
1038
1039static void hisi_sas_release_task(struct hisi_hba *hisi_hba,
1040 struct domain_device *device)
1041{
1042 struct hisi_sas_slot *slot, *slot2;
1043 struct hisi_sas_device *sas_dev = device->lldd_dev;
1044
1045 list_for_each_entry_safe(slot, slot2, &sas_dev->list, entry)
1046 hisi_sas_do_release_task(hisi_hba, slot->task, slot);
1047}
1048
1049void hisi_sas_release_tasks(struct hisi_hba *hisi_hba)
1050{
1051 struct hisi_sas_device *sas_dev;
1052 struct domain_device *device;
1053 int i;
1054
1055 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1056 sas_dev = &hisi_hba->devices[i];
1057 device = sas_dev->sas_device;
1058
1059 if ((sas_dev->dev_type == SAS_PHY_UNUSED) ||
1060 !device)
1061 continue;
1062
1063 hisi_sas_release_task(hisi_hba, device);
1064 }
1065}
1066EXPORT_SYMBOL_GPL(hisi_sas_release_tasks);
1067
1068static void hisi_sas_dereg_device(struct hisi_hba *hisi_hba,
1069 struct domain_device *device)
1070{
1071 if (hisi_hba->hw->dereg_device)
1072 hisi_hba->hw->dereg_device(hisi_hba, device);
1073}
1074
1075static void hisi_sas_dev_gone(struct domain_device *device)
1076{
1077 struct hisi_sas_device *sas_dev = device->lldd_dev;
1078 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1079 struct device *dev = hisi_hba->dev;
1080 int ret = 0;
1081
1082 dev_info(dev, "dev[%d:%x] is gone\n",
1083 sas_dev->device_id, sas_dev->dev_type);
1084
1085 down(&hisi_hba->sem);
1086 if (!test_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags)) {
1087 hisi_sas_internal_task_abort(hisi_hba, device,
1088 HISI_SAS_INT_ABT_DEV, 0, true);
1089
1090 hisi_sas_dereg_device(hisi_hba, device);
1091
1092 ret = hisi_hba->hw->clear_itct(hisi_hba, sas_dev);
1093 device->lldd_dev = NULL;
1094 }
1095
1096 if (hisi_hba->hw->free_device)
1097 hisi_hba->hw->free_device(sas_dev);
1098
1099
1100 if (!ret)
1101 sas_dev->dev_type = SAS_PHY_UNUSED;
1102 sas_dev->sas_device = NULL;
1103 up(&hisi_hba->sem);
1104}
1105
1106static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
1107{
1108 return hisi_sas_task_exec(task, gfp_flags, 0, NULL);
1109}
1110
1111static int hisi_sas_phy_set_linkrate(struct hisi_hba *hisi_hba, int phy_no,
1112 struct sas_phy_linkrates *r)
1113{
1114 struct sas_phy_linkrates _r;
1115
1116 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1117 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1118 enum sas_linkrate min, max;
1119
1120 if (r->minimum_linkrate > SAS_LINK_RATE_1_5_GBPS)
1121 return -EINVAL;
1122
1123 if (r->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) {
1124 max = sas_phy->phy->maximum_linkrate;
1125 min = r->minimum_linkrate;
1126 } else if (r->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) {
1127 max = r->maximum_linkrate;
1128 min = sas_phy->phy->minimum_linkrate;
1129 } else
1130 return -EINVAL;
1131
1132 _r.maximum_linkrate = max;
1133 _r.minimum_linkrate = min;
1134
1135 sas_phy->phy->maximum_linkrate = max;
1136 sas_phy->phy->minimum_linkrate = min;
1137
1138 hisi_sas_phy_enable(hisi_hba, phy_no, 0);
1139 msleep(100);
1140 hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, &_r);
1141 hisi_sas_phy_enable(hisi_hba, phy_no, 1);
1142
1143 return 0;
1144}
1145
1146static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
1147 void *funcdata)
1148{
1149 struct hisi_sas_phy *phy = container_of(sas_phy,
1150 struct hisi_sas_phy, sas_phy);
1151 struct sas_ha_struct *sas_ha = sas_phy->ha;
1152 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
1153 struct device *dev = hisi_hba->dev;
1154 DECLARE_COMPLETION_ONSTACK(completion);
1155 int phy_no = sas_phy->id;
1156 u8 sts = phy->phy_attached;
1157 int ret = 0;
1158
1159 phy->reset_completion = &completion;
1160
1161 switch (func) {
1162 case PHY_FUNC_HARD_RESET:
1163 hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no);
1164 break;
1165
1166 case PHY_FUNC_LINK_RESET:
1167 hisi_sas_phy_enable(hisi_hba, phy_no, 0);
1168 msleep(100);
1169 hisi_sas_phy_enable(hisi_hba, phy_no, 1);
1170 break;
1171
1172 case PHY_FUNC_DISABLE:
1173 hisi_sas_phy_enable(hisi_hba, phy_no, 0);
1174 goto out;
1175
1176 case PHY_FUNC_SET_LINK_RATE:
1177 ret = hisi_sas_phy_set_linkrate(hisi_hba, phy_no, funcdata);
1178 break;
1179
1180 case PHY_FUNC_GET_EVENTS:
1181 if (hisi_hba->hw->get_events) {
1182 hisi_hba->hw->get_events(hisi_hba, phy_no);
1183 goto out;
1184 }
1185 fallthrough;
1186 case PHY_FUNC_RELEASE_SPINUP_HOLD:
1187 default:
1188 ret = -EOPNOTSUPP;
1189 goto out;
1190 }
1191
1192 if (sts && !wait_for_completion_timeout(&completion, 2 * HZ)) {
1193 dev_warn(dev, "phy%d wait phyup timed out for func %d\n",
1194 phy_no, func);
1195 if (phy->in_reset)
1196 ret = -ETIMEDOUT;
1197 }
1198
1199out:
1200 phy->reset_completion = NULL;
1201
1202 return ret;
1203}
1204
1205static void hisi_sas_task_done(struct sas_task *task)
1206{
1207 del_timer_sync(&task->slow_task->timer);
1208 complete(&task->slow_task->completion);
1209}
1210
1211static void hisi_sas_tmf_timedout(struct timer_list *t)
1212{
1213 struct sas_task_slow *slow = from_timer(slow, t, timer);
1214 struct sas_task *task = slow->task;
1215 unsigned long flags;
1216 bool is_completed = true;
1217
1218 spin_lock_irqsave(&task->task_state_lock, flags);
1219 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1220 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1221 is_completed = false;
1222 }
1223 spin_unlock_irqrestore(&task->task_state_lock, flags);
1224
1225 if (!is_completed)
1226 complete(&task->slow_task->completion);
1227}
1228
1229#define TASK_TIMEOUT (20 * HZ)
1230#define TASK_RETRY 3
1231#define INTERNAL_ABORT_TIMEOUT (6 * HZ)
1232static int hisi_sas_exec_internal_tmf_task(struct domain_device *device,
1233 void *parameter, u32 para_len,
1234 struct hisi_sas_tmf_task *tmf)
1235{
1236 struct hisi_sas_device *sas_dev = device->lldd_dev;
1237 struct hisi_hba *hisi_hba = sas_dev->hisi_hba;
1238 struct device *dev = hisi_hba->dev;
1239 struct sas_task *task;
1240 int res, retry;
1241
1242 for (retry = 0; retry < TASK_RETRY; retry++) {
1243 task = sas_alloc_slow_task(GFP_KERNEL);
1244 if (!task)
1245 return -ENOMEM;
1246
1247 task->dev = device;
1248 task->task_proto = device->tproto;
1249
1250 if (dev_is_sata(device)) {
1251 task->ata_task.device_control_reg_update = 1;
1252 memcpy(&task->ata_task.fis, parameter, para_len);
1253 } else {
1254 memcpy(&task->ssp_task, parameter, para_len);
1255 }
1256 task->task_done = hisi_sas_task_done;
1257
1258 task->slow_task->timer.function = hisi_sas_tmf_timedout;
1259 task->slow_task->timer.expires = jiffies + TASK_TIMEOUT;
1260 add_timer(&task->slow_task->timer);
1261
1262 res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf);
1263
1264 if (res) {
1265 del_timer_sync(&task->slow_task->timer);
1266 dev_err(dev, "abort tmf: executing internal task failed: %d\n",
1267 res);
1268 goto ex_err;
1269 }
1270
1271 wait_for_completion(&task->slow_task->completion);
1272 res = TMF_RESP_FUNC_FAILED;
1273
1274 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1275 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1276 struct hisi_sas_slot *slot = task->lldd_task;
1277
1278 dev_err(dev, "abort tmf: TMF task timeout and not done\n");
1279 if (slot) {
1280 struct hisi_sas_cq *cq =
1281 &hisi_hba->cq[slot->dlvry_queue];
1282
1283
1284
1285
1286 synchronize_irq(cq->irq_no);
1287 slot->task = NULL;
1288 }
1289
1290 goto ex_err;
1291 } else
1292 dev_err(dev, "abort tmf: TMF task timeout\n");
1293 }
1294
1295 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1296 task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
1297 res = TMF_RESP_FUNC_COMPLETE;
1298 break;
1299 }
1300
1301 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1302 task->task_status.stat == TMF_RESP_FUNC_SUCC) {
1303 res = TMF_RESP_FUNC_SUCC;
1304 break;
1305 }
1306
1307 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1308 task->task_status.stat == SAS_DATA_UNDERRUN) {
1309
1310
1311
1312 dev_warn(dev, "abort tmf: task to dev %016llx resp: 0x%x sts 0x%x underrun\n",
1313 SAS_ADDR(device->sas_addr),
1314 task->task_status.resp,
1315 task->task_status.stat);
1316 res = task->task_status.residual;
1317 break;
1318 }
1319
1320 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1321 task->task_status.stat == SAS_DATA_OVERRUN) {
1322 dev_warn(dev, "abort tmf: blocked task error\n");
1323 res = -EMSGSIZE;
1324 break;
1325 }
1326
1327 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1328 task->task_status.stat == SAS_OPEN_REJECT) {
1329 dev_warn(dev, "abort tmf: open reject failed\n");
1330 res = -EIO;
1331 } else {
1332 dev_warn(dev, "abort tmf: task to dev %016llx resp: 0x%x status 0x%x\n",
1333 SAS_ADDR(device->sas_addr),
1334 task->task_status.resp,
1335 task->task_status.stat);
1336 }
1337 sas_free_task(task);
1338 task = NULL;
1339 }
1340ex_err:
1341 if (retry == TASK_RETRY)
1342 dev_warn(dev, "abort tmf: executing internal task failed!\n");
1343 sas_free_task(task);
1344 return res;
1345}
1346
1347static void hisi_sas_fill_ata_reset_cmd(struct ata_device *dev,
1348 bool reset, int pmp, u8 *fis)
1349{
1350 struct ata_taskfile tf;
1351
1352 ata_tf_init(dev, &tf);
1353 if (reset)
1354 tf.ctl |= ATA_SRST;
1355 else
1356 tf.ctl &= ~ATA_SRST;
1357 tf.command = ATA_CMD_DEV_RESET;
1358 ata_tf_to_fis(&tf, pmp, 0, fis);
1359}
1360
1361static int hisi_sas_softreset_ata_disk(struct domain_device *device)
1362{
1363 u8 fis[20] = {0};
1364 struct ata_port *ap = device->sata_dev.ap;
1365 struct ata_link *link;
1366 int rc = TMF_RESP_FUNC_FAILED;
1367 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1368 struct device *dev = hisi_hba->dev;
1369 int s = sizeof(struct host_to_dev_fis);
1370
1371 ata_for_each_link(link, ap, EDGE) {
1372 int pmp = sata_srst_pmp(link);
1373
1374 hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis);
1375 rc = hisi_sas_exec_internal_tmf_task(device, fis, s, NULL);
1376 if (rc != TMF_RESP_FUNC_COMPLETE)
1377 break;
1378 }
1379
1380 if (rc == TMF_RESP_FUNC_COMPLETE) {
1381 ata_for_each_link(link, ap, EDGE) {
1382 int pmp = sata_srst_pmp(link);
1383
1384 hisi_sas_fill_ata_reset_cmd(link->device, 0, pmp, fis);
1385 rc = hisi_sas_exec_internal_tmf_task(device, fis,
1386 s, NULL);
1387 if (rc != TMF_RESP_FUNC_COMPLETE)
1388 dev_err(dev, "ata disk %016llx de-reset failed\n",
1389 SAS_ADDR(device->sas_addr));
1390 }
1391 } else {
1392 dev_err(dev, "ata disk %016llx reset failed\n",
1393 SAS_ADDR(device->sas_addr));
1394 }
1395
1396 if (rc == TMF_RESP_FUNC_COMPLETE)
1397 hisi_sas_release_task(hisi_hba, device);
1398
1399 return rc;
1400}
1401
1402static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device,
1403 u8 *lun, struct hisi_sas_tmf_task *tmf)
1404{
1405 struct sas_ssp_task ssp_task;
1406
1407 if (!(device->tproto & SAS_PROTOCOL_SSP))
1408 return TMF_RESP_FUNC_ESUPP;
1409
1410 memcpy(ssp_task.LUN, lun, 8);
1411
1412 return hisi_sas_exec_internal_tmf_task(device, &ssp_task,
1413 sizeof(ssp_task), tmf);
1414}
1415
1416static void hisi_sas_refresh_port_id(struct hisi_hba *hisi_hba)
1417{
1418 u32 state = hisi_hba->hw->get_phys_state(hisi_hba);
1419 int i;
1420
1421 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1422 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
1423 struct domain_device *device = sas_dev->sas_device;
1424 struct asd_sas_port *sas_port;
1425 struct hisi_sas_port *port;
1426 struct hisi_sas_phy *phy = NULL;
1427 struct asd_sas_phy *sas_phy;
1428
1429 if ((sas_dev->dev_type == SAS_PHY_UNUSED)
1430 || !device || !device->port)
1431 continue;
1432
1433 sas_port = device->port;
1434 port = to_hisi_sas_port(sas_port);
1435
1436 list_for_each_entry(sas_phy, &sas_port->phy_list, port_phy_el)
1437 if (state & BIT(sas_phy->id)) {
1438 phy = sas_phy->lldd_phy;
1439 break;
1440 }
1441
1442 if (phy) {
1443 port->id = phy->port_id;
1444
1445
1446 if (!device->parent)
1447 device->linkrate = phy->sas_phy.linkrate;
1448
1449 hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
1450 } else
1451 port->id = 0xff;
1452 }
1453}
1454
1455static void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 state)
1456{
1457 struct asd_sas_port *_sas_port = NULL;
1458 int phy_no;
1459
1460 for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) {
1461 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1462 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1463 struct asd_sas_port *sas_port = sas_phy->port;
1464 bool do_port_check = _sas_port != sas_port;
1465
1466 if (!sas_phy->phy->enabled)
1467 continue;
1468
1469
1470 if (state & BIT(phy_no)) {
1471 if (do_port_check && sas_port && sas_port->port_dev) {
1472 struct domain_device *dev = sas_port->port_dev;
1473
1474 _sas_port = sas_port;
1475
1476 if (dev_is_expander(dev->dev_type))
1477 sas_notify_port_event(sas_phy,
1478 PORTE_BROADCAST_RCVD,
1479 GFP_KERNEL);
1480 }
1481 } else {
1482 hisi_sas_phy_down(hisi_hba, phy_no, 0, GFP_KERNEL);
1483 }
1484 }
1485}
1486
1487static void hisi_sas_reset_init_all_devices(struct hisi_hba *hisi_hba)
1488{
1489 struct hisi_sas_device *sas_dev;
1490 struct domain_device *device;
1491 int i;
1492
1493 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1494 sas_dev = &hisi_hba->devices[i];
1495 device = sas_dev->sas_device;
1496
1497 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device)
1498 continue;
1499
1500 hisi_sas_init_device(device);
1501 }
1502}
1503
1504static void hisi_sas_send_ata_reset_each_phy(struct hisi_hba *hisi_hba,
1505 struct asd_sas_port *sas_port,
1506 struct domain_device *device)
1507{
1508 struct hisi_sas_tmf_task tmf_task = { .force_phy = 1 };
1509 struct ata_port *ap = device->sata_dev.ap;
1510 struct device *dev = hisi_hba->dev;
1511 int s = sizeof(struct host_to_dev_fis);
1512 int rc = TMF_RESP_FUNC_FAILED;
1513 struct asd_sas_phy *sas_phy;
1514 struct ata_link *link;
1515 u8 fis[20] = {0};
1516 u32 state;
1517
1518 state = hisi_hba->hw->get_phys_state(hisi_hba);
1519 list_for_each_entry(sas_phy, &sas_port->phy_list, port_phy_el) {
1520 if (!(state & BIT(sas_phy->id)))
1521 continue;
1522
1523 ata_for_each_link(link, ap, EDGE) {
1524 int pmp = sata_srst_pmp(link);
1525
1526 tmf_task.phy_id = sas_phy->id;
1527 hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis);
1528 rc = hisi_sas_exec_internal_tmf_task(device, fis, s,
1529 &tmf_task);
1530 if (rc != TMF_RESP_FUNC_COMPLETE) {
1531 dev_err(dev, "phy%d ata reset failed rc=%d\n",
1532 sas_phy->id, rc);
1533 break;
1534 }
1535 }
1536 }
1537}
1538
1539static void hisi_sas_terminate_stp_reject(struct hisi_hba *hisi_hba)
1540{
1541 struct device *dev = hisi_hba->dev;
1542 int port_no, rc, i;
1543
1544 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1545 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
1546 struct domain_device *device = sas_dev->sas_device;
1547
1548 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device)
1549 continue;
1550
1551 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1552 HISI_SAS_INT_ABT_DEV, 0,
1553 false);
1554 if (rc < 0)
1555 dev_err(dev, "STP reject: abort dev failed %d\n", rc);
1556 }
1557
1558 for (port_no = 0; port_no < hisi_hba->n_phy; port_no++) {
1559 struct hisi_sas_port *port = &hisi_hba->port[port_no];
1560 struct asd_sas_port *sas_port = &port->sas_port;
1561 struct domain_device *port_dev = sas_port->port_dev;
1562 struct domain_device *device;
1563
1564 if (!port_dev || !dev_is_expander(port_dev->dev_type))
1565 continue;
1566
1567
1568 list_for_each_entry(device, &sas_port->dev_list,
1569 dev_list_node) {
1570 if (dev_is_sata(device)) {
1571 hisi_sas_send_ata_reset_each_phy(hisi_hba,
1572 sas_port,
1573 device);
1574 break;
1575 }
1576 }
1577 }
1578}
1579
1580void hisi_sas_controller_reset_prepare(struct hisi_hba *hisi_hba)
1581{
1582 struct Scsi_Host *shost = hisi_hba->shost;
1583
1584 down(&hisi_hba->sem);
1585 hisi_hba->phy_state = hisi_hba->hw->get_phys_state(hisi_hba);
1586
1587 scsi_block_requests(shost);
1588 hisi_hba->hw->wait_cmds_complete_timeout(hisi_hba, 100, 5000);
1589
1590 del_timer_sync(&hisi_hba->timer);
1591
1592 set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1593}
1594EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_prepare);
1595
1596void hisi_sas_controller_reset_done(struct hisi_hba *hisi_hba)
1597{
1598 struct Scsi_Host *shost = hisi_hba->shost;
1599
1600
1601 hisi_hba->hw->phys_init(hisi_hba);
1602 msleep(1000);
1603 hisi_sas_refresh_port_id(hisi_hba);
1604 clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1605
1606 if (hisi_hba->reject_stp_links_msk)
1607 hisi_sas_terminate_stp_reject(hisi_hba);
1608 hisi_sas_reset_init_all_devices(hisi_hba);
1609 up(&hisi_hba->sem);
1610 scsi_unblock_requests(shost);
1611 clear_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags);
1612
1613 hisi_sas_rescan_topology(hisi_hba, hisi_hba->phy_state);
1614}
1615EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_done);
1616
1617static int hisi_sas_controller_prereset(struct hisi_hba *hisi_hba)
1618{
1619 if (!hisi_hba->hw->soft_reset)
1620 return -1;
1621
1622 if (test_and_set_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags))
1623 return -1;
1624
1625 if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct[0].itct)
1626 hisi_hba->hw->debugfs_snapshot_regs(hisi_hba);
1627
1628 return 0;
1629}
1630
1631static int hisi_sas_controller_reset(struct hisi_hba *hisi_hba)
1632{
1633 struct device *dev = hisi_hba->dev;
1634 struct Scsi_Host *shost = hisi_hba->shost;
1635 int rc;
1636
1637 dev_info(dev, "controller resetting...\n");
1638 hisi_sas_controller_reset_prepare(hisi_hba);
1639
1640 rc = hisi_hba->hw->soft_reset(hisi_hba);
1641 if (rc) {
1642 dev_warn(dev, "controller reset failed (%d)\n", rc);
1643 clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1644 up(&hisi_hba->sem);
1645 scsi_unblock_requests(shost);
1646 clear_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags);
1647 return rc;
1648 }
1649
1650 hisi_sas_controller_reset_done(hisi_hba);
1651 clear_bit(HISI_SAS_HW_FAULT_BIT, &hisi_hba->flags);
1652 dev_info(dev, "controller reset complete\n");
1653
1654 return 0;
1655}
1656
1657static int hisi_sas_abort_task(struct sas_task *task)
1658{
1659 struct scsi_lun lun;
1660 struct hisi_sas_tmf_task tmf_task;
1661 struct domain_device *device = task->dev;
1662 struct hisi_sas_device *sas_dev = device->lldd_dev;
1663 struct hisi_hba *hisi_hba;
1664 struct device *dev;
1665 int rc = TMF_RESP_FUNC_FAILED;
1666 unsigned long flags;
1667
1668 if (!sas_dev)
1669 return TMF_RESP_FUNC_FAILED;
1670
1671 hisi_hba = dev_to_hisi_hba(task->dev);
1672 dev = hisi_hba->dev;
1673
1674 spin_lock_irqsave(&task->task_state_lock, flags);
1675 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1676 struct hisi_sas_slot *slot = task->lldd_task;
1677 struct hisi_sas_cq *cq;
1678
1679 if (slot) {
1680
1681
1682
1683
1684 cq = &hisi_hba->cq[slot->dlvry_queue];
1685 synchronize_irq(cq->irq_no);
1686 }
1687 spin_unlock_irqrestore(&task->task_state_lock, flags);
1688 rc = TMF_RESP_FUNC_COMPLETE;
1689 goto out;
1690 }
1691 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1692 spin_unlock_irqrestore(&task->task_state_lock, flags);
1693
1694 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1695 struct scsi_cmnd *cmnd = task->uldd_task;
1696 struct hisi_sas_slot *slot = task->lldd_task;
1697 u16 tag = slot->idx;
1698 int rc2;
1699
1700 int_to_scsilun(cmnd->device->lun, &lun);
1701 tmf_task.tmf = TMF_ABORT_TASK;
1702 tmf_task.tag_of_task_to_be_managed = tag;
1703
1704 rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun,
1705 &tmf_task);
1706
1707 rc2 = hisi_sas_internal_task_abort(hisi_hba, device,
1708 HISI_SAS_INT_ABT_CMD, tag,
1709 false);
1710 if (rc2 < 0) {
1711 dev_err(dev, "abort task: internal abort (%d)\n", rc2);
1712 return TMF_RESP_FUNC_FAILED;
1713 }
1714
1715
1716
1717
1718
1719
1720
1721
1722 if (rc == TMF_RESP_FUNC_COMPLETE && rc2 != TMF_RESP_FUNC_SUCC) {
1723 if (task->lldd_task)
1724 hisi_sas_do_release_task(hisi_hba, task, slot);
1725 }
1726 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1727 task->task_proto & SAS_PROTOCOL_STP) {
1728 if (task->dev->dev_type == SAS_SATA_DEV) {
1729 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1730 HISI_SAS_INT_ABT_DEV,
1731 0, false);
1732 if (rc < 0) {
1733 dev_err(dev, "abort task: internal abort failed\n");
1734 goto out;
1735 }
1736 hisi_sas_dereg_device(hisi_hba, device);
1737 rc = hisi_sas_softreset_ata_disk(device);
1738 }
1739 } else if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SMP) {
1740
1741 struct hisi_sas_slot *slot = task->lldd_task;
1742 u32 tag = slot->idx;
1743 struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue];
1744
1745 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1746 HISI_SAS_INT_ABT_CMD, tag,
1747 false);
1748 if (((rc < 0) || (rc == TMF_RESP_FUNC_FAILED)) &&
1749 task->lldd_task) {
1750
1751
1752
1753
1754 synchronize_irq(cq->irq_no);
1755 slot->task = NULL;
1756 }
1757 }
1758
1759out:
1760 if (rc != TMF_RESP_FUNC_COMPLETE)
1761 dev_notice(dev, "abort task: rc=%d\n", rc);
1762 return rc;
1763}
1764
1765static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun)
1766{
1767 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1768 struct device *dev = hisi_hba->dev;
1769 struct hisi_sas_tmf_task tmf_task;
1770 int rc;
1771
1772 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1773 HISI_SAS_INT_ABT_DEV, 0, false);
1774 if (rc < 0) {
1775 dev_err(dev, "abort task set: internal abort rc=%d\n", rc);
1776 return TMF_RESP_FUNC_FAILED;
1777 }
1778 hisi_sas_dereg_device(hisi_hba, device);
1779
1780 tmf_task.tmf = TMF_ABORT_TASK_SET;
1781 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1782
1783 if (rc == TMF_RESP_FUNC_COMPLETE)
1784 hisi_sas_release_task(hisi_hba, device);
1785
1786 return rc;
1787}
1788
1789static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun)
1790{
1791 struct hisi_sas_tmf_task tmf_task;
1792 int rc;
1793
1794 tmf_task.tmf = TMF_CLEAR_ACA;
1795 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1796
1797 return rc;
1798}
1799
1800#define I_T_NEXUS_RESET_PHYUP_TIMEOUT (2 * HZ)
1801
1802static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device)
1803{
1804 struct sas_phy *local_phy = sas_get_local_phy(device);
1805 struct hisi_sas_device *sas_dev = device->lldd_dev;
1806 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1807 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
1808 int rc, reset_type;
1809
1810 if (!local_phy->enabled) {
1811 sas_put_local_phy(local_phy);
1812 return -ENODEV;
1813 }
1814
1815 if (scsi_is_sas_phy_local(local_phy)) {
1816 struct asd_sas_phy *sas_phy =
1817 sas_ha->sas_phy[local_phy->number];
1818 struct hisi_sas_phy *phy =
1819 container_of(sas_phy, struct hisi_sas_phy, sas_phy);
1820 unsigned long flags;
1821
1822 spin_lock_irqsave(&phy->lock, flags);
1823 phy->in_reset = 1;
1824 spin_unlock_irqrestore(&phy->lock, flags);
1825 }
1826
1827 reset_type = (sas_dev->dev_status == HISI_SAS_DEV_INIT ||
1828 !dev_is_sata(device)) ? true : false;
1829
1830 rc = sas_phy_reset(local_phy, reset_type);
1831 sas_put_local_phy(local_phy);
1832
1833 if (scsi_is_sas_phy_local(local_phy)) {
1834 struct asd_sas_phy *sas_phy =
1835 sas_ha->sas_phy[local_phy->number];
1836 struct hisi_sas_phy *phy =
1837 container_of(sas_phy, struct hisi_sas_phy, sas_phy);
1838 unsigned long flags;
1839
1840 spin_lock_irqsave(&phy->lock, flags);
1841 phy->in_reset = 0;
1842 spin_unlock_irqrestore(&phy->lock, flags);
1843
1844
1845 if (rc == -ETIMEDOUT)
1846 hisi_sas_phy_down(hisi_hba, sas_phy->id, 0, GFP_KERNEL);
1847 } else if (sas_dev->dev_status != HISI_SAS_DEV_INIT) {
1848
1849
1850
1851
1852 if (!rc)
1853 msleep(2000);
1854 }
1855
1856 return rc;
1857}
1858
1859static int hisi_sas_I_T_nexus_reset(struct domain_device *device)
1860{
1861 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1862 struct device *dev = hisi_hba->dev;
1863 int rc;
1864
1865 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1866 HISI_SAS_INT_ABT_DEV, 0, false);
1867 if (rc < 0) {
1868 dev_err(dev, "I_T nexus reset: internal abort (%d)\n", rc);
1869 return TMF_RESP_FUNC_FAILED;
1870 }
1871 hisi_sas_dereg_device(hisi_hba, device);
1872
1873 rc = hisi_sas_debug_I_T_nexus_reset(device);
1874 if (rc == TMF_RESP_FUNC_COMPLETE && dev_is_sata(device)) {
1875 struct sas_phy *local_phy;
1876
1877 rc = hisi_sas_softreset_ata_disk(device);
1878 switch (rc) {
1879 case -ECOMM:
1880 rc = -ENODEV;
1881 break;
1882 case TMF_RESP_FUNC_FAILED:
1883 case -EMSGSIZE:
1884 case -EIO:
1885 local_phy = sas_get_local_phy(device);
1886 rc = sas_phy_enable(local_phy, 0);
1887 if (!rc) {
1888 local_phy->enabled = 0;
1889 dev_err(dev, "Disabled local phy of ATA disk %016llx due to softreset fail (%d)\n",
1890 SAS_ADDR(device->sas_addr), rc);
1891 rc = -ENODEV;
1892 }
1893 sas_put_local_phy(local_phy);
1894 break;
1895 default:
1896 break;
1897 }
1898 }
1899
1900 if ((rc == TMF_RESP_FUNC_COMPLETE) || (rc == -ENODEV))
1901 hisi_sas_release_task(hisi_hba, device);
1902
1903 return rc;
1904}
1905
1906static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun)
1907{
1908 struct hisi_sas_device *sas_dev = device->lldd_dev;
1909 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1910 struct device *dev = hisi_hba->dev;
1911 int rc = TMF_RESP_FUNC_FAILED;
1912
1913
1914 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1915 HISI_SAS_INT_ABT_DEV, 0, false);
1916 if (rc < 0) {
1917 dev_err(dev, "lu_reset: internal abort failed\n");
1918 goto out;
1919 }
1920 hisi_sas_dereg_device(hisi_hba, device);
1921
1922 if (dev_is_sata(device)) {
1923 struct sas_phy *phy;
1924
1925 phy = sas_get_local_phy(device);
1926
1927 rc = sas_phy_reset(phy, true);
1928
1929 if (rc == 0)
1930 hisi_sas_release_task(hisi_hba, device);
1931 sas_put_local_phy(phy);
1932 } else {
1933 struct hisi_sas_tmf_task tmf_task = { .tmf = TMF_LU_RESET };
1934
1935 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1936 if (rc == TMF_RESP_FUNC_COMPLETE)
1937 hisi_sas_release_task(hisi_hba, device);
1938 }
1939out:
1940 if (rc != TMF_RESP_FUNC_COMPLETE)
1941 dev_err(dev, "lu_reset: for device[%d]:rc= %d\n",
1942 sas_dev->device_id, rc);
1943 return rc;
1944}
1945
1946static void hisi_sas_async_I_T_nexus_reset(void *data, async_cookie_t cookie)
1947{
1948 struct domain_device *device = data;
1949 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1950 int rc;
1951
1952 rc = hisi_sas_debug_I_T_nexus_reset(device);
1953 if (rc != TMF_RESP_FUNC_COMPLETE)
1954 dev_info(hisi_hba->dev, "I_T_nexus reset fail for dev:%016llx rc=%d\n",
1955 SAS_ADDR(device->sas_addr), rc);
1956}
1957
1958static int hisi_sas_clear_nexus_ha(struct sas_ha_struct *sas_ha)
1959{
1960 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
1961 HISI_SAS_DECLARE_RST_WORK_ON_STACK(r);
1962 ASYNC_DOMAIN_EXCLUSIVE(async);
1963 int i;
1964
1965 queue_work(hisi_hba->wq, &r.work);
1966 wait_for_completion(r.completion);
1967 if (!r.done)
1968 return TMF_RESP_FUNC_FAILED;
1969
1970 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1971 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
1972 struct domain_device *device = sas_dev->sas_device;
1973
1974 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device ||
1975 dev_is_expander(device->dev_type))
1976 continue;
1977
1978 async_schedule_domain(hisi_sas_async_I_T_nexus_reset,
1979 device, &async);
1980 }
1981
1982 async_synchronize_full_domain(&async);
1983 hisi_sas_release_tasks(hisi_hba);
1984
1985 return TMF_RESP_FUNC_COMPLETE;
1986}
1987
1988static int hisi_sas_query_task(struct sas_task *task)
1989{
1990 struct scsi_lun lun;
1991 struct hisi_sas_tmf_task tmf_task;
1992 int rc = TMF_RESP_FUNC_FAILED;
1993
1994 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1995 struct scsi_cmnd *cmnd = task->uldd_task;
1996 struct domain_device *device = task->dev;
1997 struct hisi_sas_slot *slot = task->lldd_task;
1998 u32 tag = slot->idx;
1999
2000 int_to_scsilun(cmnd->device->lun, &lun);
2001 tmf_task.tmf = TMF_QUERY_TASK;
2002 tmf_task.tag_of_task_to_be_managed = tag;
2003
2004 rc = hisi_sas_debug_issue_ssp_tmf(device,
2005 lun.scsi_lun,
2006 &tmf_task);
2007 switch (rc) {
2008
2009 case TMF_RESP_FUNC_SUCC:
2010
2011 case TMF_RESP_FUNC_FAILED:
2012 case TMF_RESP_FUNC_COMPLETE:
2013 break;
2014 default:
2015 rc = TMF_RESP_FUNC_FAILED;
2016 break;
2017 }
2018 }
2019 return rc;
2020}
2021
2022static int
2023hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id,
2024 struct sas_task *task, int abort_flag,
2025 int task_tag, struct hisi_sas_dq *dq)
2026{
2027 struct domain_device *device = task->dev;
2028 struct hisi_sas_device *sas_dev = device->lldd_dev;
2029 struct device *dev = hisi_hba->dev;
2030 struct hisi_sas_port *port;
2031 struct hisi_sas_slot *slot;
2032 struct asd_sas_port *sas_port = device->port;
2033 struct hisi_sas_cmd_hdr *cmd_hdr_base;
2034 int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx;
2035 unsigned long flags;
2036 int wr_q_index;
2037
2038 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags)))
2039 return -EINVAL;
2040
2041 if (!device->port)
2042 return -1;
2043
2044 port = to_hisi_sas_port(sas_port);
2045
2046
2047 rc = hisi_sas_slot_index_alloc(hisi_hba, NULL);
2048 if (rc < 0)
2049 goto err_out;
2050
2051 slot_idx = rc;
2052 slot = &hisi_hba->slot_info[slot_idx];
2053
2054 spin_lock(&dq->lock);
2055 wr_q_index = dq->wr_point;
2056 dq->wr_point = (dq->wr_point + 1) % HISI_SAS_QUEUE_SLOTS;
2057 list_add_tail(&slot->delivery, &dq->list);
2058 spin_unlock(&dq->lock);
2059 spin_lock(&sas_dev->lock);
2060 list_add_tail(&slot->entry, &sas_dev->list);
2061 spin_unlock(&sas_dev->lock);
2062
2063 dlvry_queue = dq->id;
2064 dlvry_queue_slot = wr_q_index;
2065
2066 slot->device_id = sas_dev->device_id;
2067 slot->n_elem = n_elem;
2068 slot->dlvry_queue = dlvry_queue;
2069 slot->dlvry_queue_slot = dlvry_queue_slot;
2070 cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
2071 slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
2072 slot->task = task;
2073 slot->port = port;
2074 slot->is_internal = true;
2075 task->lldd_task = slot;
2076
2077 memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
2078 memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ);
2079 memset(hisi_sas_status_buf_addr_mem(slot), 0,
2080 sizeof(struct hisi_sas_err_record));
2081
2082 hisi_sas_task_prep_abort(hisi_hba, slot, device_id,
2083 abort_flag, task_tag);
2084
2085 spin_lock_irqsave(&task->task_state_lock, flags);
2086 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
2087 spin_unlock_irqrestore(&task->task_state_lock, flags);
2088 WRITE_ONCE(slot->ready, 1);
2089
2090 spin_lock(&dq->lock);
2091 hisi_hba->hw->start_delivery(dq);
2092 spin_unlock(&dq->lock);
2093
2094 return 0;
2095
2096err_out:
2097 dev_err(dev, "internal abort task prep: failed[%d]!\n", rc);
2098
2099 return rc;
2100}
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114static int
2115_hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
2116 struct domain_device *device, int abort_flag,
2117 int tag, struct hisi_sas_dq *dq, bool rst_to_recover)
2118{
2119 struct sas_task *task;
2120 struct hisi_sas_device *sas_dev = device->lldd_dev;
2121 struct device *dev = hisi_hba->dev;
2122 int res;
2123
2124
2125
2126
2127
2128
2129
2130 if (!hisi_hba->hw->prep_abort)
2131 return TMF_RESP_FUNC_FAILED;
2132
2133 if (test_bit(HISI_SAS_HW_FAULT_BIT, &hisi_hba->flags))
2134 return -EIO;
2135
2136 task = sas_alloc_slow_task(GFP_KERNEL);
2137 if (!task)
2138 return -ENOMEM;
2139
2140 task->dev = device;
2141 task->task_proto = device->tproto;
2142 task->task_done = hisi_sas_task_done;
2143 task->slow_task->timer.function = hisi_sas_tmf_timedout;
2144 task->slow_task->timer.expires = jiffies + INTERNAL_ABORT_TIMEOUT;
2145 add_timer(&task->slow_task->timer);
2146
2147 res = hisi_sas_internal_abort_task_exec(hisi_hba, sas_dev->device_id,
2148 task, abort_flag, tag, dq);
2149 if (res) {
2150 del_timer_sync(&task->slow_task->timer);
2151 dev_err(dev, "internal task abort: executing internal task failed: %d\n",
2152 res);
2153 goto exit;
2154 }
2155 wait_for_completion(&task->slow_task->completion);
2156 res = TMF_RESP_FUNC_FAILED;
2157
2158
2159 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
2160 if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct[0].itct)
2161 queue_work(hisi_hba->wq, &hisi_hba->debugfs_work);
2162
2163 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
2164 struct hisi_sas_slot *slot = task->lldd_task;
2165
2166 set_bit(HISI_SAS_HW_FAULT_BIT, &hisi_hba->flags);
2167
2168 if (slot) {
2169 struct hisi_sas_cq *cq =
2170 &hisi_hba->cq[slot->dlvry_queue];
2171
2172
2173
2174
2175 synchronize_irq(cq->irq_no);
2176 slot->task = NULL;
2177 }
2178
2179 if (rst_to_recover) {
2180 dev_err(dev, "internal task abort: timeout and not done. Queuing reset.\n");
2181 queue_work(hisi_hba->wq, &hisi_hba->rst_work);
2182 } else {
2183 dev_err(dev, "internal task abort: timeout and not done.\n");
2184 }
2185
2186 res = -EIO;
2187 goto exit;
2188 } else
2189 dev_err(dev, "internal task abort: timeout.\n");
2190 }
2191
2192 if (task->task_status.resp == SAS_TASK_COMPLETE &&
2193 task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
2194 res = TMF_RESP_FUNC_COMPLETE;
2195 goto exit;
2196 }
2197
2198 if (task->task_status.resp == SAS_TASK_COMPLETE &&
2199 task->task_status.stat == TMF_RESP_FUNC_SUCC) {
2200 res = TMF_RESP_FUNC_SUCC;
2201 goto exit;
2202 }
2203
2204exit:
2205 dev_dbg(dev, "internal task abort: task to dev %016llx task=%pK resp: 0x%x sts 0x%x\n",
2206 SAS_ADDR(device->sas_addr), task,
2207 task->task_status.resp,
2208 task->task_status.stat);
2209 sas_free_task(task);
2210
2211 return res;
2212}
2213
2214static int
2215hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
2216 struct domain_device *device,
2217 int abort_flag, int tag, bool rst_to_recover)
2218{
2219 struct hisi_sas_slot *slot;
2220 struct device *dev = hisi_hba->dev;
2221 struct hisi_sas_dq *dq;
2222 int i, rc;
2223
2224 switch (abort_flag) {
2225 case HISI_SAS_INT_ABT_CMD:
2226 slot = &hisi_hba->slot_info[tag];
2227 dq = &hisi_hba->dq[slot->dlvry_queue];
2228 return _hisi_sas_internal_task_abort(hisi_hba, device,
2229 abort_flag, tag, dq,
2230 rst_to_recover);
2231 case HISI_SAS_INT_ABT_DEV:
2232 for (i = 0; i < hisi_hba->cq_nvecs; i++) {
2233 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2234 const struct cpumask *mask = cq->irq_mask;
2235
2236 if (mask && !cpumask_intersects(cpu_online_mask, mask))
2237 continue;
2238 dq = &hisi_hba->dq[i];
2239 rc = _hisi_sas_internal_task_abort(hisi_hba, device,
2240 abort_flag, tag,
2241 dq, rst_to_recover);
2242 if (rc)
2243 return rc;
2244 }
2245 break;
2246 default:
2247 dev_err(dev, "Unrecognised internal abort flag (%d)\n",
2248 abort_flag);
2249 return -EINVAL;
2250 }
2251
2252 return 0;
2253}
2254
2255static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy)
2256{
2257 hisi_sas_port_notify_formed(sas_phy);
2258}
2259
2260static int hisi_sas_write_gpio(struct sas_ha_struct *sha, u8 reg_type,
2261 u8 reg_index, u8 reg_count, u8 *write_data)
2262{
2263 struct hisi_hba *hisi_hba = sha->lldd_ha;
2264
2265 if (!hisi_hba->hw->write_gpio)
2266 return -EOPNOTSUPP;
2267
2268 return hisi_hba->hw->write_gpio(hisi_hba, reg_type,
2269 reg_index, reg_count, write_data);
2270}
2271
2272static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy)
2273{
2274 struct asd_sas_phy *sas_phy = &phy->sas_phy;
2275 struct sas_phy *sphy = sas_phy->phy;
2276 unsigned long flags;
2277
2278 phy->phy_attached = 0;
2279 phy->phy_type = 0;
2280 phy->port = NULL;
2281
2282 spin_lock_irqsave(&phy->lock, flags);
2283 if (phy->enable)
2284 sphy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
2285 else
2286 sphy->negotiated_linkrate = SAS_PHY_DISABLED;
2287 spin_unlock_irqrestore(&phy->lock, flags);
2288}
2289
2290void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy,
2291 gfp_t gfp_flags)
2292{
2293 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
2294 struct asd_sas_phy *sas_phy = &phy->sas_phy;
2295 struct device *dev = hisi_hba->dev;
2296
2297 if (rdy) {
2298
2299 hisi_sas_bytes_dmaed(hisi_hba, phy_no, gfp_flags);
2300 hisi_sas_port_notify_formed(sas_phy);
2301 } else {
2302 struct hisi_sas_port *port = phy->port;
2303
2304 if (test_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags) ||
2305 phy->in_reset) {
2306 dev_info(dev, "ignore flutter phy%d down\n", phy_no);
2307 return;
2308 }
2309
2310 sas_notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL, gfp_flags);
2311 sas_phy_disconnected(sas_phy);
2312
2313 if (port) {
2314 if (phy->phy_type & PORT_TYPE_SAS) {
2315 int port_id = port->id;
2316
2317 if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba,
2318 port_id))
2319 port->port_attached = 0;
2320 } else if (phy->phy_type & PORT_TYPE_SATA)
2321 port->port_attached = 0;
2322 }
2323 hisi_sas_phy_disconnected(phy);
2324 }
2325}
2326EXPORT_SYMBOL_GPL(hisi_sas_phy_down);
2327
2328void hisi_sas_sync_irqs(struct hisi_hba *hisi_hba)
2329{
2330 int i;
2331
2332 for (i = 0; i < hisi_hba->cq_nvecs; i++) {
2333 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2334
2335 synchronize_irq(cq->irq_no);
2336 }
2337}
2338EXPORT_SYMBOL_GPL(hisi_sas_sync_irqs);
2339
2340int hisi_sas_host_reset(struct Scsi_Host *shost, int reset_type)
2341{
2342 struct hisi_hba *hisi_hba = shost_priv(shost);
2343
2344 if (reset_type != SCSI_ADAPTER_RESET)
2345 return -EOPNOTSUPP;
2346
2347 queue_work(hisi_hba->wq, &hisi_hba->rst_work);
2348
2349 return 0;
2350}
2351EXPORT_SYMBOL_GPL(hisi_sas_host_reset);
2352
2353struct scsi_transport_template *hisi_sas_stt;
2354EXPORT_SYMBOL_GPL(hisi_sas_stt);
2355
2356static struct sas_domain_function_template hisi_sas_transport_ops = {
2357 .lldd_dev_found = hisi_sas_dev_found,
2358 .lldd_dev_gone = hisi_sas_dev_gone,
2359 .lldd_execute_task = hisi_sas_queue_command,
2360 .lldd_control_phy = hisi_sas_control_phy,
2361 .lldd_abort_task = hisi_sas_abort_task,
2362 .lldd_abort_task_set = hisi_sas_abort_task_set,
2363 .lldd_clear_aca = hisi_sas_clear_aca,
2364 .lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset,
2365 .lldd_lu_reset = hisi_sas_lu_reset,
2366 .lldd_query_task = hisi_sas_query_task,
2367 .lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha,
2368 .lldd_port_formed = hisi_sas_port_formed,
2369 .lldd_write_gpio = hisi_sas_write_gpio,
2370};
2371
2372void hisi_sas_init_mem(struct hisi_hba *hisi_hba)
2373{
2374 int i, s, j, max_command_entries = HISI_SAS_MAX_COMMANDS;
2375 struct hisi_sas_breakpoint *sata_breakpoint = hisi_hba->sata_breakpoint;
2376
2377 for (i = 0; i < hisi_hba->queue_count; i++) {
2378 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2379 struct hisi_sas_dq *dq = &hisi_hba->dq[i];
2380 struct hisi_sas_cmd_hdr *cmd_hdr = hisi_hba->cmd_hdr[i];
2381
2382 s = sizeof(struct hisi_sas_cmd_hdr);
2383 for (j = 0; j < HISI_SAS_QUEUE_SLOTS; j++)
2384 memset(&cmd_hdr[j], 0, s);
2385
2386 dq->wr_point = 0;
2387
2388 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
2389 memset(hisi_hba->complete_hdr[i], 0, s);
2390 cq->rd_point = 0;
2391 }
2392
2393 s = sizeof(struct hisi_sas_initial_fis) * hisi_hba->n_phy;
2394 memset(hisi_hba->initial_fis, 0, s);
2395
2396 s = max_command_entries * sizeof(struct hisi_sas_iost);
2397 memset(hisi_hba->iost, 0, s);
2398
2399 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
2400 memset(hisi_hba->breakpoint, 0, s);
2401
2402 s = sizeof(struct hisi_sas_sata_breakpoint);
2403 for (j = 0; j < HISI_SAS_MAX_ITCT_ENTRIES; j++)
2404 memset(&sata_breakpoint[j], 0, s);
2405}
2406EXPORT_SYMBOL_GPL(hisi_sas_init_mem);
2407
2408int hisi_sas_alloc(struct hisi_hba *hisi_hba)
2409{
2410 struct device *dev = hisi_hba->dev;
2411 int i, j, s, max_command_entries = HISI_SAS_MAX_COMMANDS;
2412 int max_command_entries_ru, sz_slot_buf_ru;
2413 int blk_cnt, slots_per_blk;
2414
2415 sema_init(&hisi_hba->sem, 1);
2416 spin_lock_init(&hisi_hba->lock);
2417 for (i = 0; i < hisi_hba->n_phy; i++) {
2418 hisi_sas_phy_init(hisi_hba, i);
2419 hisi_hba->port[i].port_attached = 0;
2420 hisi_hba->port[i].id = -1;
2421 }
2422
2423 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
2424 hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED;
2425 hisi_hba->devices[i].device_id = i;
2426 hisi_hba->devices[i].dev_status = HISI_SAS_DEV_INIT;
2427 }
2428
2429 for (i = 0; i < hisi_hba->queue_count; i++) {
2430 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2431 struct hisi_sas_dq *dq = &hisi_hba->dq[i];
2432
2433
2434 cq->id = i;
2435 cq->hisi_hba = hisi_hba;
2436
2437
2438 spin_lock_init(&dq->lock);
2439 INIT_LIST_HEAD(&dq->list);
2440 dq->id = i;
2441 dq->hisi_hba = hisi_hba;
2442
2443
2444 s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
2445 hisi_hba->cmd_hdr[i] = dmam_alloc_coherent(dev, s,
2446 &hisi_hba->cmd_hdr_dma[i],
2447 GFP_KERNEL);
2448 if (!hisi_hba->cmd_hdr[i])
2449 goto err_out;
2450
2451
2452 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
2453 hisi_hba->complete_hdr[i] = dmam_alloc_coherent(dev, s,
2454 &hisi_hba->complete_hdr_dma[i],
2455 GFP_KERNEL);
2456 if (!hisi_hba->complete_hdr[i])
2457 goto err_out;
2458 }
2459
2460 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
2461 hisi_hba->itct = dmam_alloc_coherent(dev, s, &hisi_hba->itct_dma,
2462 GFP_KERNEL);
2463 if (!hisi_hba->itct)
2464 goto err_out;
2465
2466 hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries,
2467 sizeof(struct hisi_sas_slot),
2468 GFP_KERNEL);
2469 if (!hisi_hba->slot_info)
2470 goto err_out;
2471
2472
2473 max_command_entries_ru = roundup(max_command_entries, 64);
2474 if (hisi_hba->prot_mask & HISI_SAS_DIX_PROT_MASK)
2475 sz_slot_buf_ru = sizeof(struct hisi_sas_slot_dif_buf_table);
2476 else
2477 sz_slot_buf_ru = sizeof(struct hisi_sas_slot_buf_table);
2478 sz_slot_buf_ru = roundup(sz_slot_buf_ru, 64);
2479 s = max(lcm(max_command_entries_ru, sz_slot_buf_ru), PAGE_SIZE);
2480 blk_cnt = (max_command_entries_ru * sz_slot_buf_ru) / s;
2481 slots_per_blk = s / sz_slot_buf_ru;
2482
2483 for (i = 0; i < blk_cnt; i++) {
2484 int slot_index = i * slots_per_blk;
2485 dma_addr_t buf_dma;
2486 void *buf;
2487
2488 buf = dmam_alloc_coherent(dev, s, &buf_dma,
2489 GFP_KERNEL);
2490 if (!buf)
2491 goto err_out;
2492
2493 for (j = 0; j < slots_per_blk; j++, slot_index++) {
2494 struct hisi_sas_slot *slot;
2495
2496 slot = &hisi_hba->slot_info[slot_index];
2497 slot->buf = buf;
2498 slot->buf_dma = buf_dma;
2499 slot->idx = slot_index;
2500
2501 buf += sz_slot_buf_ru;
2502 buf_dma += sz_slot_buf_ru;
2503 }
2504 }
2505
2506 s = max_command_entries * sizeof(struct hisi_sas_iost);
2507 hisi_hba->iost = dmam_alloc_coherent(dev, s, &hisi_hba->iost_dma,
2508 GFP_KERNEL);
2509 if (!hisi_hba->iost)
2510 goto err_out;
2511
2512 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
2513 hisi_hba->breakpoint = dmam_alloc_coherent(dev, s,
2514 &hisi_hba->breakpoint_dma,
2515 GFP_KERNEL);
2516 if (!hisi_hba->breakpoint)
2517 goto err_out;
2518
2519 hisi_hba->slot_index_count = max_command_entries;
2520 s = hisi_hba->slot_index_count / BITS_PER_BYTE;
2521 hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL);
2522 if (!hisi_hba->slot_index_tags)
2523 goto err_out;
2524
2525 s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
2526 hisi_hba->initial_fis = dmam_alloc_coherent(dev, s,
2527 &hisi_hba->initial_fis_dma,
2528 GFP_KERNEL);
2529 if (!hisi_hba->initial_fis)
2530 goto err_out;
2531
2532 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_sata_breakpoint);
2533 hisi_hba->sata_breakpoint = dmam_alloc_coherent(dev, s,
2534 &hisi_hba->sata_breakpoint_dma,
2535 GFP_KERNEL);
2536 if (!hisi_hba->sata_breakpoint)
2537 goto err_out;
2538
2539 hisi_sas_slot_index_init(hisi_hba);
2540 hisi_hba->last_slot_index = HISI_SAS_UNRESERVED_IPTT;
2541
2542 hisi_hba->wq = create_singlethread_workqueue(dev_name(dev));
2543 if (!hisi_hba->wq) {
2544 dev_err(dev, "sas_alloc: failed to create workqueue\n");
2545 goto err_out;
2546 }
2547
2548 return 0;
2549err_out:
2550 return -ENOMEM;
2551}
2552EXPORT_SYMBOL_GPL(hisi_sas_alloc);
2553
2554void hisi_sas_free(struct hisi_hba *hisi_hba)
2555{
2556 int i;
2557
2558 for (i = 0; i < hisi_hba->n_phy; i++) {
2559 struct hisi_sas_phy *phy = &hisi_hba->phy[i];
2560
2561 del_timer_sync(&phy->timer);
2562 }
2563
2564 if (hisi_hba->wq)
2565 destroy_workqueue(hisi_hba->wq);
2566}
2567EXPORT_SYMBOL_GPL(hisi_sas_free);
2568
2569void hisi_sas_rst_work_handler(struct work_struct *work)
2570{
2571 struct hisi_hba *hisi_hba =
2572 container_of(work, struct hisi_hba, rst_work);
2573
2574 if (hisi_sas_controller_prereset(hisi_hba))
2575 return;
2576
2577 hisi_sas_controller_reset(hisi_hba);
2578}
2579EXPORT_SYMBOL_GPL(hisi_sas_rst_work_handler);
2580
2581void hisi_sas_sync_rst_work_handler(struct work_struct *work)
2582{
2583 struct hisi_sas_rst *rst =
2584 container_of(work, struct hisi_sas_rst, work);
2585
2586 if (hisi_sas_controller_prereset(rst->hisi_hba))
2587 goto rst_complete;
2588
2589 if (!hisi_sas_controller_reset(rst->hisi_hba))
2590 rst->done = true;
2591rst_complete:
2592 complete(rst->completion);
2593}
2594EXPORT_SYMBOL_GPL(hisi_sas_sync_rst_work_handler);
2595
2596int hisi_sas_get_fw_info(struct hisi_hba *hisi_hba)
2597{
2598 struct device *dev = hisi_hba->dev;
2599 struct platform_device *pdev = hisi_hba->platform_dev;
2600 struct device_node *np = pdev ? pdev->dev.of_node : NULL;
2601 struct clk *refclk;
2602
2603 if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr,
2604 SAS_ADDR_SIZE)) {
2605 dev_err(dev, "could not get property sas-addr\n");
2606 return -ENOENT;
2607 }
2608
2609 if (np) {
2610
2611
2612
2613
2614 hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np,
2615 "hisilicon,sas-syscon");
2616 if (IS_ERR(hisi_hba->ctrl)) {
2617 dev_err(dev, "could not get syscon\n");
2618 return -ENOENT;
2619 }
2620
2621 if (device_property_read_u32(dev, "ctrl-reset-reg",
2622 &hisi_hba->ctrl_reset_reg)) {
2623 dev_err(dev, "could not get property ctrl-reset-reg\n");
2624 return -ENOENT;
2625 }
2626
2627 if (device_property_read_u32(dev, "ctrl-reset-sts-reg",
2628 &hisi_hba->ctrl_reset_sts_reg)) {
2629 dev_err(dev, "could not get property ctrl-reset-sts-reg\n");
2630 return -ENOENT;
2631 }
2632
2633 if (device_property_read_u32(dev, "ctrl-clock-ena-reg",
2634 &hisi_hba->ctrl_clock_ena_reg)) {
2635 dev_err(dev, "could not get property ctrl-clock-ena-reg\n");
2636 return -ENOENT;
2637 }
2638 }
2639
2640 refclk = devm_clk_get(dev, NULL);
2641 if (IS_ERR(refclk))
2642 dev_dbg(dev, "no ref clk property\n");
2643 else
2644 hisi_hba->refclk_frequency_mhz = clk_get_rate(refclk) / 1000000;
2645
2646 if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy)) {
2647 dev_err(dev, "could not get property phy-count\n");
2648 return -ENOENT;
2649 }
2650
2651 if (device_property_read_u32(dev, "queue-count",
2652 &hisi_hba->queue_count)) {
2653 dev_err(dev, "could not get property queue-count\n");
2654 return -ENOENT;
2655 }
2656
2657 return 0;
2658}
2659EXPORT_SYMBOL_GPL(hisi_sas_get_fw_info);
2660
2661static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
2662 const struct hisi_sas_hw *hw)
2663{
2664 struct resource *res;
2665 struct Scsi_Host *shost;
2666 struct hisi_hba *hisi_hba;
2667 struct device *dev = &pdev->dev;
2668 int error;
2669
2670 shost = scsi_host_alloc(hw->sht, sizeof(*hisi_hba));
2671 if (!shost) {
2672 dev_err(dev, "scsi host alloc failed\n");
2673 return NULL;
2674 }
2675 hisi_hba = shost_priv(shost);
2676
2677 INIT_WORK(&hisi_hba->rst_work, hisi_sas_rst_work_handler);
2678 hisi_hba->hw = hw;
2679 hisi_hba->dev = dev;
2680 hisi_hba->platform_dev = pdev;
2681 hisi_hba->shost = shost;
2682 SHOST_TO_SAS_HA(shost) = &hisi_hba->sha;
2683
2684 timer_setup(&hisi_hba->timer, NULL, 0);
2685
2686 if (hisi_sas_get_fw_info(hisi_hba) < 0)
2687 goto err_out;
2688
2689 error = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
2690 if (error)
2691 error = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
2692
2693 if (error) {
2694 dev_err(dev, "No usable DMA addressing method\n");
2695 goto err_out;
2696 }
2697
2698 hisi_hba->regs = devm_platform_ioremap_resource(pdev, 0);
2699 if (IS_ERR(hisi_hba->regs))
2700 goto err_out;
2701
2702 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2703 if (res) {
2704 hisi_hba->sgpio_regs = devm_ioremap_resource(dev, res);
2705 if (IS_ERR(hisi_hba->sgpio_regs))
2706 goto err_out;
2707 }
2708
2709 if (hisi_sas_alloc(hisi_hba)) {
2710 hisi_sas_free(hisi_hba);
2711 goto err_out;
2712 }
2713
2714 return shost;
2715err_out:
2716 scsi_host_put(shost);
2717 dev_err(dev, "shost alloc failed\n");
2718 return NULL;
2719}
2720
2721static int hisi_sas_interrupt_preinit(struct hisi_hba *hisi_hba)
2722{
2723 if (hisi_hba->hw->interrupt_preinit)
2724 return hisi_hba->hw->interrupt_preinit(hisi_hba);
2725 return 0;
2726}
2727
2728int hisi_sas_probe(struct platform_device *pdev,
2729 const struct hisi_sas_hw *hw)
2730{
2731 struct Scsi_Host *shost;
2732 struct hisi_hba *hisi_hba;
2733 struct device *dev = &pdev->dev;
2734 struct asd_sas_phy **arr_phy;
2735 struct asd_sas_port **arr_port;
2736 struct sas_ha_struct *sha;
2737 int rc, phy_nr, port_nr, i;
2738
2739 shost = hisi_sas_shost_alloc(pdev, hw);
2740 if (!shost)
2741 return -ENOMEM;
2742
2743 sha = SHOST_TO_SAS_HA(shost);
2744 hisi_hba = shost_priv(shost);
2745 platform_set_drvdata(pdev, sha);
2746
2747 phy_nr = port_nr = hisi_hba->n_phy;
2748
2749 arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL);
2750 arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL);
2751 if (!arr_phy || !arr_port) {
2752 rc = -ENOMEM;
2753 goto err_out_ha;
2754 }
2755
2756 sha->sas_phy = arr_phy;
2757 sha->sas_port = arr_port;
2758 sha->lldd_ha = hisi_hba;
2759
2760 shost->transportt = hisi_sas_stt;
2761 shost->max_id = HISI_SAS_MAX_DEVICES;
2762 shost->max_lun = ~0;
2763 shost->max_channel = 1;
2764 shost->max_cmd_len = 16;
2765 if (hisi_hba->hw->slot_index_alloc) {
2766 shost->can_queue = HISI_SAS_MAX_COMMANDS;
2767 shost->cmd_per_lun = HISI_SAS_MAX_COMMANDS;
2768 } else {
2769 shost->can_queue = HISI_SAS_UNRESERVED_IPTT;
2770 shost->cmd_per_lun = HISI_SAS_UNRESERVED_IPTT;
2771 }
2772
2773 sha->sas_ha_name = DRV_NAME;
2774 sha->dev = hisi_hba->dev;
2775 sha->lldd_module = THIS_MODULE;
2776 sha->sas_addr = &hisi_hba->sas_addr[0];
2777 sha->num_phys = hisi_hba->n_phy;
2778 sha->core.shost = hisi_hba->shost;
2779
2780 for (i = 0; i < hisi_hba->n_phy; i++) {
2781 sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy;
2782 sha->sas_port[i] = &hisi_hba->port[i].sas_port;
2783 }
2784
2785 rc = hisi_sas_interrupt_preinit(hisi_hba);
2786 if (rc)
2787 goto err_out_ha;
2788
2789 rc = scsi_add_host(shost, &pdev->dev);
2790 if (rc)
2791 goto err_out_ha;
2792
2793 rc = sas_register_ha(sha);
2794 if (rc)
2795 goto err_out_register_ha;
2796
2797 rc = hisi_hba->hw->hw_init(hisi_hba);
2798 if (rc)
2799 goto err_out_hw_init;
2800
2801 scsi_scan_host(shost);
2802
2803 return 0;
2804
2805err_out_hw_init:
2806 sas_unregister_ha(sha);
2807err_out_register_ha:
2808 scsi_remove_host(shost);
2809err_out_ha:
2810 hisi_sas_free(hisi_hba);
2811 scsi_host_put(shost);
2812 return rc;
2813}
2814EXPORT_SYMBOL_GPL(hisi_sas_probe);
2815
2816int hisi_sas_remove(struct platform_device *pdev)
2817{
2818 struct sas_ha_struct *sha = platform_get_drvdata(pdev);
2819 struct hisi_hba *hisi_hba = sha->lldd_ha;
2820 struct Scsi_Host *shost = sha->core.shost;
2821
2822 del_timer_sync(&hisi_hba->timer);
2823
2824 sas_unregister_ha(sha);
2825 sas_remove_host(sha->core.shost);
2826
2827 hisi_sas_free(hisi_hba);
2828 scsi_host_put(shost);
2829 return 0;
2830}
2831EXPORT_SYMBOL_GPL(hisi_sas_remove);
2832
2833#if IS_ENABLED(CONFIG_SCSI_HISI_SAS_DEBUGFS_DEFAULT_ENABLE)
2834#define DEBUGFS_ENABLE_DEFAULT "enabled"
2835bool hisi_sas_debugfs_enable = true;
2836u32 hisi_sas_debugfs_dump_count = 50;
2837#else
2838#define DEBUGFS_ENABLE_DEFAULT "disabled"
2839bool hisi_sas_debugfs_enable;
2840u32 hisi_sas_debugfs_dump_count = 1;
2841#endif
2842
2843EXPORT_SYMBOL_GPL(hisi_sas_debugfs_enable);
2844module_param_named(debugfs_enable, hisi_sas_debugfs_enable, bool, 0444);
2845MODULE_PARM_DESC(hisi_sas_debugfs_enable,
2846 "Enable driver debugfs (default "DEBUGFS_ENABLE_DEFAULT")");
2847
2848EXPORT_SYMBOL_GPL(hisi_sas_debugfs_dump_count);
2849module_param_named(debugfs_dump_count, hisi_sas_debugfs_dump_count, uint, 0444);
2850MODULE_PARM_DESC(hisi_sas_debugfs_dump_count, "Number of debugfs dumps to allow");
2851
2852struct dentry *hisi_sas_debugfs_dir;
2853EXPORT_SYMBOL_GPL(hisi_sas_debugfs_dir);
2854
2855static __init int hisi_sas_init(void)
2856{
2857 hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops);
2858 if (!hisi_sas_stt)
2859 return -ENOMEM;
2860
2861 if (hisi_sas_debugfs_enable) {
2862 hisi_sas_debugfs_dir = debugfs_create_dir("hisi_sas", NULL);
2863 if (hisi_sas_debugfs_dump_count > HISI_SAS_MAX_DEBUGFS_DUMP) {
2864 pr_info("hisi_sas: Limiting debugfs dump count\n");
2865 hisi_sas_debugfs_dump_count = HISI_SAS_MAX_DEBUGFS_DUMP;
2866 }
2867 }
2868
2869 return 0;
2870}
2871
2872static __exit void hisi_sas_exit(void)
2873{
2874 sas_release_transport(hisi_sas_stt);
2875
2876 debugfs_remove(hisi_sas_debugfs_dir);
2877}
2878
2879module_init(hisi_sas_init);
2880module_exit(hisi_sas_exit);
2881
2882MODULE_LICENSE("GPL");
2883MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
2884MODULE_DESCRIPTION("HISILICON SAS controller driver");
2885MODULE_ALIAS("platform:" DRV_NAME);
2886