1
2
3
4
5
6
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 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(scmd->request);
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_RESET_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
759static int hisi_sas_dev_found(struct domain_device *device)
760{
761 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
762 struct domain_device *parent_dev = device->parent;
763 struct hisi_sas_device *sas_dev;
764 struct device *dev = hisi_hba->dev;
765 int rc;
766
767 if (hisi_hba->hw->alloc_dev)
768 sas_dev = hisi_hba->hw->alloc_dev(device);
769 else
770 sas_dev = hisi_sas_alloc_dev(device);
771 if (!sas_dev) {
772 dev_err(dev, "fail alloc dev: max support %d devices\n",
773 HISI_SAS_MAX_DEVICES);
774 return -EINVAL;
775 }
776
777 device->lldd_dev = sas_dev;
778 hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
779
780 if (parent_dev && dev_is_expander(parent_dev->dev_type)) {
781 int phy_no;
782 u8 phy_num = parent_dev->ex_dev.num_phys;
783 struct ex_phy *phy;
784
785 for (phy_no = 0; phy_no < phy_num; phy_no++) {
786 phy = &parent_dev->ex_dev.ex_phy[phy_no];
787 if (SAS_ADDR(phy->attached_sas_addr) ==
788 SAS_ADDR(device->sas_addr))
789 break;
790 }
791
792 if (phy_no == phy_num) {
793 dev_info(dev, "dev found: no attached "
794 "dev:%016llx at ex:%016llx\n",
795 SAS_ADDR(device->sas_addr),
796 SAS_ADDR(parent_dev->sas_addr));
797 rc = -EINVAL;
798 goto err_out;
799 }
800 }
801
802 dev_info(dev, "dev[%d:%x] found\n",
803 sas_dev->device_id, sas_dev->dev_type);
804
805 rc = hisi_sas_init_device(device);
806 if (rc)
807 goto err_out;
808 sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
809 return 0;
810
811err_out:
812 hisi_sas_dev_gone(device);
813 return rc;
814}
815
816int hisi_sas_slave_configure(struct scsi_device *sdev)
817{
818 struct domain_device *dev = sdev_to_domain_dev(sdev);
819 int ret = sas_slave_configure(sdev);
820
821 if (ret)
822 return ret;
823 if (!dev_is_sata(dev))
824 sas_change_queue_depth(sdev, 64);
825
826 return 0;
827}
828EXPORT_SYMBOL_GPL(hisi_sas_slave_configure);
829
830void hisi_sas_scan_start(struct Scsi_Host *shost)
831{
832 struct hisi_hba *hisi_hba = shost_priv(shost);
833
834 hisi_hba->hw->phys_init(hisi_hba);
835}
836EXPORT_SYMBOL_GPL(hisi_sas_scan_start);
837
838int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time)
839{
840 struct hisi_hba *hisi_hba = shost_priv(shost);
841 struct sas_ha_struct *sha = &hisi_hba->sha;
842
843
844 if (time < HZ)
845 return 0;
846
847 sas_drain_work(sha);
848 return 1;
849}
850EXPORT_SYMBOL_GPL(hisi_sas_scan_finished);
851
852static void hisi_sas_phyup_work(struct work_struct *work)
853{
854 struct hisi_sas_phy *phy =
855 container_of(work, typeof(*phy), works[HISI_PHYE_PHY_UP]);
856 struct hisi_hba *hisi_hba = phy->hisi_hba;
857 struct asd_sas_phy *sas_phy = &phy->sas_phy;
858 int phy_no = sas_phy->id;
859
860 if (phy->identify.target_port_protocols == SAS_PROTOCOL_SSP)
861 hisi_hba->hw->sl_notify_ssp(hisi_hba, phy_no);
862 hisi_sas_bytes_dmaed(hisi_hba, phy_no, GFP_KERNEL);
863}
864
865static void hisi_sas_linkreset_work(struct work_struct *work)
866{
867 struct hisi_sas_phy *phy =
868 container_of(work, typeof(*phy), works[HISI_PHYE_LINK_RESET]);
869 struct asd_sas_phy *sas_phy = &phy->sas_phy;
870
871 hisi_sas_control_phy(sas_phy, PHY_FUNC_LINK_RESET, NULL);
872}
873
874static const work_func_t hisi_sas_phye_fns[HISI_PHYES_NUM] = {
875 [HISI_PHYE_PHY_UP] = hisi_sas_phyup_work,
876 [HISI_PHYE_LINK_RESET] = hisi_sas_linkreset_work,
877};
878
879bool hisi_sas_notify_phy_event(struct hisi_sas_phy *phy,
880 enum hisi_sas_phy_event event)
881{
882 struct hisi_hba *hisi_hba = phy->hisi_hba;
883
884 if (WARN_ON(event >= HISI_PHYES_NUM))
885 return false;
886
887 return queue_work(hisi_hba->wq, &phy->works[event]);
888}
889EXPORT_SYMBOL_GPL(hisi_sas_notify_phy_event);
890
891static void hisi_sas_wait_phyup_timedout(struct timer_list *t)
892{
893 struct hisi_sas_phy *phy = from_timer(phy, t, timer);
894 struct hisi_hba *hisi_hba = phy->hisi_hba;
895 struct device *dev = hisi_hba->dev;
896 int phy_no = phy->sas_phy.id;
897
898 dev_warn(dev, "phy%d wait phyup timeout, issuing link reset\n", phy_no);
899 hisi_sas_notify_phy_event(phy, HISI_PHYE_LINK_RESET);
900}
901
902void hisi_sas_phy_oob_ready(struct hisi_hba *hisi_hba, int phy_no)
903{
904 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
905 struct device *dev = hisi_hba->dev;
906
907 dev_dbg(dev, "phy%d OOB ready\n", phy_no);
908 if (phy->phy_attached)
909 return;
910
911 if (!timer_pending(&phy->timer)) {
912 phy->timer.expires = jiffies + HISI_SAS_WAIT_PHYUP_TIMEOUT * HZ;
913 add_timer(&phy->timer);
914 }
915}
916EXPORT_SYMBOL_GPL(hisi_sas_phy_oob_ready);
917
918static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no)
919{
920 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
921 struct asd_sas_phy *sas_phy = &phy->sas_phy;
922 int i;
923
924 phy->hisi_hba = hisi_hba;
925 phy->port = NULL;
926 phy->minimum_linkrate = SAS_LINK_RATE_1_5_GBPS;
927 phy->maximum_linkrate = hisi_hba->hw->phy_get_max_linkrate();
928 sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0;
929 sas_phy->class = SAS;
930 sas_phy->iproto = SAS_PROTOCOL_ALL;
931 sas_phy->tproto = 0;
932 sas_phy->type = PHY_TYPE_PHYSICAL;
933 sas_phy->role = PHY_ROLE_INITIATOR;
934 sas_phy->oob_mode = OOB_NOT_CONNECTED;
935 sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
936 sas_phy->id = phy_no;
937 sas_phy->sas_addr = &hisi_hba->sas_addr[0];
938 sas_phy->frame_rcvd = &phy->frame_rcvd[0];
939 sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata;
940 sas_phy->lldd_phy = phy;
941
942 for (i = 0; i < HISI_PHYES_NUM; i++)
943 INIT_WORK(&phy->works[i], hisi_sas_phye_fns[i]);
944
945 spin_lock_init(&phy->lock);
946
947 timer_setup(&phy->timer, hisi_sas_wait_phyup_timedout, 0);
948}
949
950
951void hisi_sas_phy_enable(struct hisi_hba *hisi_hba, int phy_no, int enable)
952{
953 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
954 struct asd_sas_phy *aphy = &phy->sas_phy;
955 struct sas_phy *sphy = aphy->phy;
956 unsigned long flags;
957
958 spin_lock_irqsave(&phy->lock, flags);
959
960 if (enable) {
961
962 if (!phy->enable)
963 sphy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
964 hisi_hba->hw->phy_start(hisi_hba, phy_no);
965 } else {
966 sphy->negotiated_linkrate = SAS_PHY_DISABLED;
967 hisi_hba->hw->phy_disable(hisi_hba, phy_no);
968 }
969 phy->enable = enable;
970 spin_unlock_irqrestore(&phy->lock, flags);
971}
972EXPORT_SYMBOL_GPL(hisi_sas_phy_enable);
973
974static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy)
975{
976 struct sas_ha_struct *sas_ha = sas_phy->ha;
977 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
978 struct hisi_sas_phy *phy = sas_phy->lldd_phy;
979 struct asd_sas_port *sas_port = sas_phy->port;
980 struct hisi_sas_port *port;
981 unsigned long flags;
982
983 if (!sas_port)
984 return;
985
986 port = to_hisi_sas_port(sas_port);
987 spin_lock_irqsave(&hisi_hba->lock, flags);
988 port->port_attached = 1;
989 port->id = phy->port_id;
990 phy->port = port;
991 sas_port->lldd_port = port;
992 spin_unlock_irqrestore(&hisi_hba->lock, flags);
993}
994
995static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, struct sas_task *task,
996 struct hisi_sas_slot *slot)
997{
998 if (task) {
999 unsigned long flags;
1000 struct task_status_struct *ts;
1001
1002 ts = &task->task_status;
1003
1004 ts->resp = SAS_TASK_COMPLETE;
1005 ts->stat = SAS_ABORTED_TASK;
1006 spin_lock_irqsave(&task->task_state_lock, flags);
1007 task->task_state_flags &=
1008 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1009 if (!slot->is_internal && task->task_proto != SAS_PROTOCOL_SMP)
1010 task->task_state_flags |= SAS_TASK_STATE_DONE;
1011 spin_unlock_irqrestore(&task->task_state_lock, flags);
1012 }
1013
1014 hisi_sas_slot_task_free(hisi_hba, task, slot);
1015}
1016
1017static void hisi_sas_release_task(struct hisi_hba *hisi_hba,
1018 struct domain_device *device)
1019{
1020 struct hisi_sas_slot *slot, *slot2;
1021 struct hisi_sas_device *sas_dev = device->lldd_dev;
1022
1023 list_for_each_entry_safe(slot, slot2, &sas_dev->list, entry)
1024 hisi_sas_do_release_task(hisi_hba, slot->task, slot);
1025}
1026
1027void hisi_sas_release_tasks(struct hisi_hba *hisi_hba)
1028{
1029 struct hisi_sas_device *sas_dev;
1030 struct domain_device *device;
1031 int i;
1032
1033 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1034 sas_dev = &hisi_hba->devices[i];
1035 device = sas_dev->sas_device;
1036
1037 if ((sas_dev->dev_type == SAS_PHY_UNUSED) ||
1038 !device)
1039 continue;
1040
1041 hisi_sas_release_task(hisi_hba, device);
1042 }
1043}
1044EXPORT_SYMBOL_GPL(hisi_sas_release_tasks);
1045
1046static void hisi_sas_dereg_device(struct hisi_hba *hisi_hba,
1047 struct domain_device *device)
1048{
1049 if (hisi_hba->hw->dereg_device)
1050 hisi_hba->hw->dereg_device(hisi_hba, device);
1051}
1052
1053static void hisi_sas_dev_gone(struct domain_device *device)
1054{
1055 struct hisi_sas_device *sas_dev = device->lldd_dev;
1056 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1057 struct device *dev = hisi_hba->dev;
1058 int ret = 0;
1059
1060 dev_info(dev, "dev[%d:%x] is gone\n",
1061 sas_dev->device_id, sas_dev->dev_type);
1062
1063 down(&hisi_hba->sem);
1064 if (!test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)) {
1065 hisi_sas_internal_task_abort(hisi_hba, device,
1066 HISI_SAS_INT_ABT_DEV, 0);
1067
1068 hisi_sas_dereg_device(hisi_hba, device);
1069
1070 ret = hisi_hba->hw->clear_itct(hisi_hba, sas_dev);
1071 device->lldd_dev = NULL;
1072 }
1073
1074 if (hisi_hba->hw->free_device)
1075 hisi_hba->hw->free_device(sas_dev);
1076
1077
1078 if (!ret)
1079 sas_dev->dev_type = SAS_PHY_UNUSED;
1080 sas_dev->sas_device = NULL;
1081 up(&hisi_hba->sem);
1082}
1083
1084static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
1085{
1086 return hisi_sas_task_exec(task, gfp_flags, 0, NULL);
1087}
1088
1089static int hisi_sas_phy_set_linkrate(struct hisi_hba *hisi_hba, int phy_no,
1090 struct sas_phy_linkrates *r)
1091{
1092 struct sas_phy_linkrates _r;
1093
1094 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1095 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1096 enum sas_linkrate min, max;
1097
1098 if (r->minimum_linkrate > SAS_LINK_RATE_1_5_GBPS)
1099 return -EINVAL;
1100
1101 if (r->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) {
1102 max = sas_phy->phy->maximum_linkrate;
1103 min = r->minimum_linkrate;
1104 } else if (r->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) {
1105 max = r->maximum_linkrate;
1106 min = sas_phy->phy->minimum_linkrate;
1107 } else
1108 return -EINVAL;
1109
1110 _r.maximum_linkrate = max;
1111 _r.minimum_linkrate = min;
1112
1113 sas_phy->phy->maximum_linkrate = max;
1114 sas_phy->phy->minimum_linkrate = min;
1115
1116 hisi_sas_phy_enable(hisi_hba, phy_no, 0);
1117 msleep(100);
1118 hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, &_r);
1119 hisi_sas_phy_enable(hisi_hba, phy_no, 1);
1120
1121 return 0;
1122}
1123
1124static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
1125 void *funcdata)
1126{
1127 struct sas_ha_struct *sas_ha = sas_phy->ha;
1128 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
1129 int phy_no = sas_phy->id;
1130
1131 switch (func) {
1132 case PHY_FUNC_HARD_RESET:
1133 hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no);
1134 break;
1135
1136 case PHY_FUNC_LINK_RESET:
1137 hisi_sas_phy_enable(hisi_hba, phy_no, 0);
1138 msleep(100);
1139 hisi_sas_phy_enable(hisi_hba, phy_no, 1);
1140 break;
1141
1142 case PHY_FUNC_DISABLE:
1143 hisi_sas_phy_enable(hisi_hba, phy_no, 0);
1144 break;
1145
1146 case PHY_FUNC_SET_LINK_RATE:
1147 return hisi_sas_phy_set_linkrate(hisi_hba, phy_no, funcdata);
1148 case PHY_FUNC_GET_EVENTS:
1149 if (hisi_hba->hw->get_events) {
1150 hisi_hba->hw->get_events(hisi_hba, phy_no);
1151 break;
1152 }
1153 fallthrough;
1154 case PHY_FUNC_RELEASE_SPINUP_HOLD:
1155 default:
1156 return -EOPNOTSUPP;
1157 }
1158 return 0;
1159}
1160
1161static void hisi_sas_task_done(struct sas_task *task)
1162{
1163 del_timer(&task->slow_task->timer);
1164 complete(&task->slow_task->completion);
1165}
1166
1167static void hisi_sas_tmf_timedout(struct timer_list *t)
1168{
1169 struct sas_task_slow *slow = from_timer(slow, t, timer);
1170 struct sas_task *task = slow->task;
1171 unsigned long flags;
1172 bool is_completed = true;
1173
1174 spin_lock_irqsave(&task->task_state_lock, flags);
1175 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1176 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1177 is_completed = false;
1178 }
1179 spin_unlock_irqrestore(&task->task_state_lock, flags);
1180
1181 if (!is_completed)
1182 complete(&task->slow_task->completion);
1183}
1184
1185#define TASK_TIMEOUT 20
1186#define TASK_RETRY 3
1187#define INTERNAL_ABORT_TIMEOUT 6
1188static int hisi_sas_exec_internal_tmf_task(struct domain_device *device,
1189 void *parameter, u32 para_len,
1190 struct hisi_sas_tmf_task *tmf)
1191{
1192 struct hisi_sas_device *sas_dev = device->lldd_dev;
1193 struct hisi_hba *hisi_hba = sas_dev->hisi_hba;
1194 struct device *dev = hisi_hba->dev;
1195 struct sas_task *task;
1196 int res, retry;
1197
1198 for (retry = 0; retry < TASK_RETRY; retry++) {
1199 task = sas_alloc_slow_task(GFP_KERNEL);
1200 if (!task)
1201 return -ENOMEM;
1202
1203 task->dev = device;
1204 task->task_proto = device->tproto;
1205
1206 if (dev_is_sata(device)) {
1207 task->ata_task.device_control_reg_update = 1;
1208 memcpy(&task->ata_task.fis, parameter, para_len);
1209 } else {
1210 memcpy(&task->ssp_task, parameter, para_len);
1211 }
1212 task->task_done = hisi_sas_task_done;
1213
1214 task->slow_task->timer.function = hisi_sas_tmf_timedout;
1215 task->slow_task->timer.expires = jiffies + TASK_TIMEOUT * HZ;
1216 add_timer(&task->slow_task->timer);
1217
1218 res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf);
1219
1220 if (res) {
1221 del_timer(&task->slow_task->timer);
1222 dev_err(dev, "abort tmf: executing internal task failed: %d\n",
1223 res);
1224 goto ex_err;
1225 }
1226
1227 wait_for_completion(&task->slow_task->completion);
1228 res = TMF_RESP_FUNC_FAILED;
1229
1230 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1231 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1232 struct hisi_sas_slot *slot = task->lldd_task;
1233
1234 dev_err(dev, "abort tmf: TMF task timeout and not done\n");
1235 if (slot) {
1236 struct hisi_sas_cq *cq =
1237 &hisi_hba->cq[slot->dlvry_queue];
1238
1239
1240
1241
1242 synchronize_irq(cq->irq_no);
1243 slot->task = NULL;
1244 }
1245
1246 goto ex_err;
1247 } else
1248 dev_err(dev, "abort tmf: TMF task timeout\n");
1249 }
1250
1251 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1252 task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
1253 res = TMF_RESP_FUNC_COMPLETE;
1254 break;
1255 }
1256
1257 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1258 task->task_status.stat == TMF_RESP_FUNC_SUCC) {
1259 res = TMF_RESP_FUNC_SUCC;
1260 break;
1261 }
1262
1263 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1264 task->task_status.stat == SAS_DATA_UNDERRUN) {
1265
1266
1267
1268 dev_warn(dev, "abort tmf: task to dev %016llx resp: 0x%x sts 0x%x underrun\n",
1269 SAS_ADDR(device->sas_addr),
1270 task->task_status.resp,
1271 task->task_status.stat);
1272 res = task->task_status.residual;
1273 break;
1274 }
1275
1276 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1277 task->task_status.stat == SAS_DATA_OVERRUN) {
1278 dev_warn(dev, "abort tmf: blocked task error\n");
1279 res = -EMSGSIZE;
1280 break;
1281 }
1282
1283 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1284 task->task_status.stat == SAS_OPEN_REJECT) {
1285 dev_warn(dev, "abort tmf: open reject failed\n");
1286 res = -EIO;
1287 } else {
1288 dev_warn(dev, "abort tmf: task to dev %016llx resp: 0x%x status 0x%x\n",
1289 SAS_ADDR(device->sas_addr),
1290 task->task_status.resp,
1291 task->task_status.stat);
1292 }
1293 sas_free_task(task);
1294 task = NULL;
1295 }
1296ex_err:
1297 if (retry == TASK_RETRY)
1298 dev_warn(dev, "abort tmf: executing internal task failed!\n");
1299 sas_free_task(task);
1300 return res;
1301}
1302
1303static void hisi_sas_fill_ata_reset_cmd(struct ata_device *dev,
1304 bool reset, int pmp, u8 *fis)
1305{
1306 struct ata_taskfile tf;
1307
1308 ata_tf_init(dev, &tf);
1309 if (reset)
1310 tf.ctl |= ATA_SRST;
1311 else
1312 tf.ctl &= ~ATA_SRST;
1313 tf.command = ATA_CMD_DEV_RESET;
1314 ata_tf_to_fis(&tf, pmp, 0, fis);
1315}
1316
1317static int hisi_sas_softreset_ata_disk(struct domain_device *device)
1318{
1319 u8 fis[20] = {0};
1320 struct ata_port *ap = device->sata_dev.ap;
1321 struct ata_link *link;
1322 int rc = TMF_RESP_FUNC_FAILED;
1323 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1324 struct device *dev = hisi_hba->dev;
1325 int s = sizeof(struct host_to_dev_fis);
1326
1327 ata_for_each_link(link, ap, EDGE) {
1328 int pmp = sata_srst_pmp(link);
1329
1330 hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis);
1331 rc = hisi_sas_exec_internal_tmf_task(device, fis, s, NULL);
1332 if (rc != TMF_RESP_FUNC_COMPLETE)
1333 break;
1334 }
1335
1336 if (rc == TMF_RESP_FUNC_COMPLETE) {
1337 ata_for_each_link(link, ap, EDGE) {
1338 int pmp = sata_srst_pmp(link);
1339
1340 hisi_sas_fill_ata_reset_cmd(link->device, 0, pmp, fis);
1341 rc = hisi_sas_exec_internal_tmf_task(device, fis,
1342 s, NULL);
1343 if (rc != TMF_RESP_FUNC_COMPLETE)
1344 dev_err(dev, "ata disk de-reset failed\n");
1345 }
1346 } else {
1347 dev_err(dev, "ata disk reset failed\n");
1348 }
1349
1350 if (rc == TMF_RESP_FUNC_COMPLETE)
1351 hisi_sas_release_task(hisi_hba, device);
1352
1353 return rc;
1354}
1355
1356static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device,
1357 u8 *lun, struct hisi_sas_tmf_task *tmf)
1358{
1359 struct sas_ssp_task ssp_task;
1360
1361 if (!(device->tproto & SAS_PROTOCOL_SSP))
1362 return TMF_RESP_FUNC_ESUPP;
1363
1364 memcpy(ssp_task.LUN, lun, 8);
1365
1366 return hisi_sas_exec_internal_tmf_task(device, &ssp_task,
1367 sizeof(ssp_task), tmf);
1368}
1369
1370static void hisi_sas_refresh_port_id(struct hisi_hba *hisi_hba)
1371{
1372 u32 state = hisi_hba->hw->get_phys_state(hisi_hba);
1373 int i;
1374
1375 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1376 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
1377 struct domain_device *device = sas_dev->sas_device;
1378 struct asd_sas_port *sas_port;
1379 struct hisi_sas_port *port;
1380 struct hisi_sas_phy *phy = NULL;
1381 struct asd_sas_phy *sas_phy;
1382
1383 if ((sas_dev->dev_type == SAS_PHY_UNUSED)
1384 || !device || !device->port)
1385 continue;
1386
1387 sas_port = device->port;
1388 port = to_hisi_sas_port(sas_port);
1389
1390 list_for_each_entry(sas_phy, &sas_port->phy_list, port_phy_el)
1391 if (state & BIT(sas_phy->id)) {
1392 phy = sas_phy->lldd_phy;
1393 break;
1394 }
1395
1396 if (phy) {
1397 port->id = phy->port_id;
1398
1399
1400 if (!device->parent)
1401 device->linkrate = phy->sas_phy.linkrate;
1402
1403 hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
1404 } else
1405 port->id = 0xff;
1406 }
1407}
1408
1409static void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 state)
1410{
1411 struct asd_sas_port *_sas_port = NULL;
1412 int phy_no;
1413
1414 for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) {
1415 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1416 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1417 struct asd_sas_port *sas_port = sas_phy->port;
1418 bool do_port_check = _sas_port != sas_port;
1419
1420 if (!sas_phy->phy->enabled)
1421 continue;
1422
1423
1424 if (state & BIT(phy_no)) {
1425 if (do_port_check && sas_port && sas_port->port_dev) {
1426 struct domain_device *dev = sas_port->port_dev;
1427
1428 _sas_port = sas_port;
1429
1430 if (dev_is_expander(dev->dev_type))
1431 sas_notify_port_event(sas_phy,
1432 PORTE_BROADCAST_RCVD,
1433 GFP_KERNEL);
1434 }
1435 } else {
1436 hisi_sas_phy_down(hisi_hba, phy_no, 0, GFP_KERNEL);
1437 }
1438 }
1439}
1440
1441static void hisi_sas_reset_init_all_devices(struct hisi_hba *hisi_hba)
1442{
1443 struct hisi_sas_device *sas_dev;
1444 struct domain_device *device;
1445 int i;
1446
1447 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1448 sas_dev = &hisi_hba->devices[i];
1449 device = sas_dev->sas_device;
1450
1451 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device)
1452 continue;
1453
1454 hisi_sas_init_device(device);
1455 }
1456}
1457
1458static void hisi_sas_send_ata_reset_each_phy(struct hisi_hba *hisi_hba,
1459 struct asd_sas_port *sas_port,
1460 struct domain_device *device)
1461{
1462 struct hisi_sas_tmf_task tmf_task = { .force_phy = 1 };
1463 struct ata_port *ap = device->sata_dev.ap;
1464 struct device *dev = hisi_hba->dev;
1465 int s = sizeof(struct host_to_dev_fis);
1466 int rc = TMF_RESP_FUNC_FAILED;
1467 struct asd_sas_phy *sas_phy;
1468 struct ata_link *link;
1469 u8 fis[20] = {0};
1470 u32 state;
1471
1472 state = hisi_hba->hw->get_phys_state(hisi_hba);
1473 list_for_each_entry(sas_phy, &sas_port->phy_list, port_phy_el) {
1474 if (!(state & BIT(sas_phy->id)))
1475 continue;
1476
1477 ata_for_each_link(link, ap, EDGE) {
1478 int pmp = sata_srst_pmp(link);
1479
1480 tmf_task.phy_id = sas_phy->id;
1481 hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis);
1482 rc = hisi_sas_exec_internal_tmf_task(device, fis, s,
1483 &tmf_task);
1484 if (rc != TMF_RESP_FUNC_COMPLETE) {
1485 dev_err(dev, "phy%d ata reset failed rc=%d\n",
1486 sas_phy->id, rc);
1487 break;
1488 }
1489 }
1490 }
1491}
1492
1493static void hisi_sas_terminate_stp_reject(struct hisi_hba *hisi_hba)
1494{
1495 struct device *dev = hisi_hba->dev;
1496 int port_no, rc, i;
1497
1498 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1499 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
1500 struct domain_device *device = sas_dev->sas_device;
1501
1502 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device)
1503 continue;
1504
1505 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1506 HISI_SAS_INT_ABT_DEV, 0);
1507 if (rc < 0)
1508 dev_err(dev, "STP reject: abort dev failed %d\n", rc);
1509 }
1510
1511 for (port_no = 0; port_no < hisi_hba->n_phy; port_no++) {
1512 struct hisi_sas_port *port = &hisi_hba->port[port_no];
1513 struct asd_sas_port *sas_port = &port->sas_port;
1514 struct domain_device *port_dev = sas_port->port_dev;
1515 struct domain_device *device;
1516
1517 if (!port_dev || !dev_is_expander(port_dev->dev_type))
1518 continue;
1519
1520
1521 list_for_each_entry(device, &sas_port->dev_list,
1522 dev_list_node) {
1523 if (dev_is_sata(device)) {
1524 hisi_sas_send_ata_reset_each_phy(hisi_hba,
1525 sas_port,
1526 device);
1527 break;
1528 }
1529 }
1530 }
1531}
1532
1533void hisi_sas_controller_reset_prepare(struct hisi_hba *hisi_hba)
1534{
1535 struct Scsi_Host *shost = hisi_hba->shost;
1536
1537 down(&hisi_hba->sem);
1538 hisi_hba->phy_state = hisi_hba->hw->get_phys_state(hisi_hba);
1539
1540 scsi_block_requests(shost);
1541 hisi_hba->hw->wait_cmds_complete_timeout(hisi_hba, 100, 5000);
1542
1543 if (timer_pending(&hisi_hba->timer))
1544 del_timer_sync(&hisi_hba->timer);
1545
1546 set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1547}
1548EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_prepare);
1549
1550void hisi_sas_controller_reset_done(struct hisi_hba *hisi_hba)
1551{
1552 struct Scsi_Host *shost = hisi_hba->shost;
1553
1554
1555 hisi_hba->hw->phys_init(hisi_hba);
1556 msleep(1000);
1557 hisi_sas_refresh_port_id(hisi_hba);
1558 clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1559
1560 if (hisi_hba->reject_stp_links_msk)
1561 hisi_sas_terminate_stp_reject(hisi_hba);
1562 hisi_sas_reset_init_all_devices(hisi_hba);
1563 up(&hisi_hba->sem);
1564 scsi_unblock_requests(shost);
1565 clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags);
1566
1567 hisi_sas_rescan_topology(hisi_hba, hisi_hba->phy_state);
1568}
1569EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_done);
1570
1571static int hisi_sas_controller_reset(struct hisi_hba *hisi_hba)
1572{
1573 struct device *dev = hisi_hba->dev;
1574 struct Scsi_Host *shost = hisi_hba->shost;
1575 int rc;
1576
1577 if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct[0].itct)
1578 queue_work(hisi_hba->wq, &hisi_hba->debugfs_work);
1579
1580 if (!hisi_hba->hw->soft_reset)
1581 return -1;
1582
1583 if (test_and_set_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags))
1584 return -1;
1585
1586 dev_info(dev, "controller resetting...\n");
1587 hisi_sas_controller_reset_prepare(hisi_hba);
1588
1589 rc = hisi_hba->hw->soft_reset(hisi_hba);
1590 if (rc) {
1591 dev_warn(dev, "controller reset failed (%d)\n", rc);
1592 clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1593 up(&hisi_hba->sem);
1594 scsi_unblock_requests(shost);
1595 clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags);
1596 return rc;
1597 }
1598
1599 hisi_sas_controller_reset_done(hisi_hba);
1600 dev_info(dev, "controller reset complete\n");
1601
1602 return 0;
1603}
1604
1605static int hisi_sas_abort_task(struct sas_task *task)
1606{
1607 struct scsi_lun lun;
1608 struct hisi_sas_tmf_task tmf_task;
1609 struct domain_device *device = task->dev;
1610 struct hisi_sas_device *sas_dev = device->lldd_dev;
1611 struct hisi_hba *hisi_hba;
1612 struct device *dev;
1613 int rc = TMF_RESP_FUNC_FAILED;
1614 unsigned long flags;
1615
1616 if (!sas_dev)
1617 return TMF_RESP_FUNC_FAILED;
1618
1619 hisi_hba = dev_to_hisi_hba(task->dev);
1620 dev = hisi_hba->dev;
1621
1622 spin_lock_irqsave(&task->task_state_lock, flags);
1623 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1624 struct hisi_sas_slot *slot = task->lldd_task;
1625 struct hisi_sas_cq *cq;
1626
1627 if (slot) {
1628
1629
1630
1631
1632 cq = &hisi_hba->cq[slot->dlvry_queue];
1633 synchronize_irq(cq->irq_no);
1634 }
1635 spin_unlock_irqrestore(&task->task_state_lock, flags);
1636 rc = TMF_RESP_FUNC_COMPLETE;
1637 goto out;
1638 }
1639 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1640 spin_unlock_irqrestore(&task->task_state_lock, flags);
1641
1642 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1643 struct scsi_cmnd *cmnd = task->uldd_task;
1644 struct hisi_sas_slot *slot = task->lldd_task;
1645 u16 tag = slot->idx;
1646 int rc2;
1647
1648 int_to_scsilun(cmnd->device->lun, &lun);
1649 tmf_task.tmf = TMF_ABORT_TASK;
1650 tmf_task.tag_of_task_to_be_managed = tag;
1651
1652 rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun,
1653 &tmf_task);
1654
1655 rc2 = hisi_sas_internal_task_abort(hisi_hba, device,
1656 HISI_SAS_INT_ABT_CMD, tag);
1657 if (rc2 < 0) {
1658 dev_err(dev, "abort task: internal abort (%d)\n", rc2);
1659 return TMF_RESP_FUNC_FAILED;
1660 }
1661
1662
1663
1664
1665
1666
1667
1668
1669 if (rc == TMF_RESP_FUNC_COMPLETE && rc2 != TMF_RESP_FUNC_SUCC) {
1670 if (task->lldd_task)
1671 hisi_sas_do_release_task(hisi_hba, task, slot);
1672 }
1673 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1674 task->task_proto & SAS_PROTOCOL_STP) {
1675 if (task->dev->dev_type == SAS_SATA_DEV) {
1676 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1677 HISI_SAS_INT_ABT_DEV,
1678 0);
1679 if (rc < 0) {
1680 dev_err(dev, "abort task: internal abort failed\n");
1681 goto out;
1682 }
1683 hisi_sas_dereg_device(hisi_hba, device);
1684 rc = hisi_sas_softreset_ata_disk(device);
1685 }
1686 } else if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SMP) {
1687
1688 struct hisi_sas_slot *slot = task->lldd_task;
1689 u32 tag = slot->idx;
1690 struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue];
1691
1692 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1693 HISI_SAS_INT_ABT_CMD, tag);
1694 if (((rc < 0) || (rc == TMF_RESP_FUNC_FAILED)) &&
1695 task->lldd_task) {
1696
1697
1698
1699
1700 synchronize_irq(cq->irq_no);
1701 slot->task = NULL;
1702 }
1703 }
1704
1705out:
1706 if (rc != TMF_RESP_FUNC_COMPLETE)
1707 dev_notice(dev, "abort task: rc=%d\n", rc);
1708 return rc;
1709}
1710
1711static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun)
1712{
1713 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1714 struct device *dev = hisi_hba->dev;
1715 struct hisi_sas_tmf_task tmf_task;
1716 int rc;
1717
1718 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1719 HISI_SAS_INT_ABT_DEV, 0);
1720 if (rc < 0) {
1721 dev_err(dev, "abort task set: internal abort rc=%d\n", rc);
1722 return TMF_RESP_FUNC_FAILED;
1723 }
1724 hisi_sas_dereg_device(hisi_hba, device);
1725
1726 tmf_task.tmf = TMF_ABORT_TASK_SET;
1727 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1728
1729 if (rc == TMF_RESP_FUNC_COMPLETE)
1730 hisi_sas_release_task(hisi_hba, device);
1731
1732 return rc;
1733}
1734
1735static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun)
1736{
1737 struct hisi_sas_tmf_task tmf_task;
1738 int rc;
1739
1740 tmf_task.tmf = TMF_CLEAR_ACA;
1741 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1742
1743 return rc;
1744}
1745
1746static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device)
1747{
1748 struct sas_phy *local_phy = sas_get_local_phy(device);
1749 struct hisi_sas_device *sas_dev = device->lldd_dev;
1750 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1751 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
1752 DECLARE_COMPLETION_ONSTACK(phyreset);
1753 int rc, reset_type;
1754
1755 if (!local_phy->enabled) {
1756 sas_put_local_phy(local_phy);
1757 return -ENODEV;
1758 }
1759
1760 if (scsi_is_sas_phy_local(local_phy)) {
1761 struct asd_sas_phy *sas_phy =
1762 sas_ha->sas_phy[local_phy->number];
1763 struct hisi_sas_phy *phy =
1764 container_of(sas_phy, struct hisi_sas_phy, sas_phy);
1765 phy->in_reset = 1;
1766 phy->reset_completion = &phyreset;
1767 }
1768
1769 reset_type = (sas_dev->dev_status == HISI_SAS_DEV_INIT ||
1770 !dev_is_sata(device)) ? true : false;
1771
1772 rc = sas_phy_reset(local_phy, reset_type);
1773 sas_put_local_phy(local_phy);
1774
1775 if (scsi_is_sas_phy_local(local_phy)) {
1776 struct asd_sas_phy *sas_phy =
1777 sas_ha->sas_phy[local_phy->number];
1778 struct hisi_sas_phy *phy =
1779 container_of(sas_phy, struct hisi_sas_phy, sas_phy);
1780 int ret = wait_for_completion_timeout(&phyreset, 2 * HZ);
1781 unsigned long flags;
1782
1783 spin_lock_irqsave(&phy->lock, flags);
1784 phy->reset_completion = NULL;
1785 phy->in_reset = 0;
1786 spin_unlock_irqrestore(&phy->lock, flags);
1787
1788
1789 if (!ret)
1790 hisi_sas_phy_down(hisi_hba, sas_phy->id, 0, GFP_KERNEL);
1791 } else if (sas_dev->dev_status != HISI_SAS_DEV_INIT) {
1792
1793
1794
1795
1796 if (!rc)
1797 msleep(2000);
1798 }
1799
1800 return rc;
1801}
1802
1803static int hisi_sas_I_T_nexus_reset(struct domain_device *device)
1804{
1805 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1806 struct device *dev = hisi_hba->dev;
1807 int rc;
1808
1809 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1810 HISI_SAS_INT_ABT_DEV, 0);
1811 if (rc < 0) {
1812 dev_err(dev, "I_T nexus reset: internal abort (%d)\n", rc);
1813 return TMF_RESP_FUNC_FAILED;
1814 }
1815 hisi_sas_dereg_device(hisi_hba, device);
1816
1817 if (dev_is_sata(device)) {
1818 rc = hisi_sas_softreset_ata_disk(device);
1819 if (rc == TMF_RESP_FUNC_FAILED)
1820 return TMF_RESP_FUNC_FAILED;
1821 }
1822
1823 rc = hisi_sas_debug_I_T_nexus_reset(device);
1824
1825 if ((rc == TMF_RESP_FUNC_COMPLETE) || (rc == -ENODEV))
1826 hisi_sas_release_task(hisi_hba, device);
1827
1828 return rc;
1829}
1830
1831static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun)
1832{
1833 struct hisi_sas_device *sas_dev = device->lldd_dev;
1834 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1835 struct device *dev = hisi_hba->dev;
1836 int rc = TMF_RESP_FUNC_FAILED;
1837
1838
1839 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1840 HISI_SAS_INT_ABT_DEV, 0);
1841 if (rc < 0) {
1842 dev_err(dev, "lu_reset: internal abort failed\n");
1843 goto out;
1844 }
1845 hisi_sas_dereg_device(hisi_hba, device);
1846
1847 if (dev_is_sata(device)) {
1848 struct sas_phy *phy;
1849
1850 phy = sas_get_local_phy(device);
1851
1852 rc = sas_phy_reset(phy, true);
1853
1854 if (rc == 0)
1855 hisi_sas_release_task(hisi_hba, device);
1856 sas_put_local_phy(phy);
1857 } else {
1858 struct hisi_sas_tmf_task tmf_task = { .tmf = TMF_LU_RESET };
1859
1860 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1861 if (rc == TMF_RESP_FUNC_COMPLETE)
1862 hisi_sas_release_task(hisi_hba, device);
1863 }
1864out:
1865 if (rc != TMF_RESP_FUNC_COMPLETE)
1866 dev_err(dev, "lu_reset: for device[%d]:rc= %d\n",
1867 sas_dev->device_id, rc);
1868 return rc;
1869}
1870
1871static int hisi_sas_clear_nexus_ha(struct sas_ha_struct *sas_ha)
1872{
1873 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
1874 struct device *dev = hisi_hba->dev;
1875 HISI_SAS_DECLARE_RST_WORK_ON_STACK(r);
1876 int rc, i;
1877
1878 queue_work(hisi_hba->wq, &r.work);
1879 wait_for_completion(r.completion);
1880 if (!r.done)
1881 return TMF_RESP_FUNC_FAILED;
1882
1883 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1884 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
1885 struct domain_device *device = sas_dev->sas_device;
1886
1887 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device ||
1888 dev_is_expander(device->dev_type))
1889 continue;
1890
1891 rc = hisi_sas_debug_I_T_nexus_reset(device);
1892 if (rc != TMF_RESP_FUNC_COMPLETE)
1893 dev_info(dev, "clear nexus ha: for device[%d] rc=%d\n",
1894 sas_dev->device_id, rc);
1895 }
1896
1897 hisi_sas_release_tasks(hisi_hba);
1898
1899 return TMF_RESP_FUNC_COMPLETE;
1900}
1901
1902static int hisi_sas_query_task(struct sas_task *task)
1903{
1904 struct scsi_lun lun;
1905 struct hisi_sas_tmf_task tmf_task;
1906 int rc = TMF_RESP_FUNC_FAILED;
1907
1908 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1909 struct scsi_cmnd *cmnd = task->uldd_task;
1910 struct domain_device *device = task->dev;
1911 struct hisi_sas_slot *slot = task->lldd_task;
1912 u32 tag = slot->idx;
1913
1914 int_to_scsilun(cmnd->device->lun, &lun);
1915 tmf_task.tmf = TMF_QUERY_TASK;
1916 tmf_task.tag_of_task_to_be_managed = tag;
1917
1918 rc = hisi_sas_debug_issue_ssp_tmf(device,
1919 lun.scsi_lun,
1920 &tmf_task);
1921 switch (rc) {
1922
1923 case TMF_RESP_FUNC_SUCC:
1924
1925 case TMF_RESP_FUNC_FAILED:
1926 case TMF_RESP_FUNC_COMPLETE:
1927 break;
1928 default:
1929 rc = TMF_RESP_FUNC_FAILED;
1930 break;
1931 }
1932 }
1933 return rc;
1934}
1935
1936static int
1937hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id,
1938 struct sas_task *task, int abort_flag,
1939 int task_tag, struct hisi_sas_dq *dq)
1940{
1941 struct domain_device *device = task->dev;
1942 struct hisi_sas_device *sas_dev = device->lldd_dev;
1943 struct device *dev = hisi_hba->dev;
1944 struct hisi_sas_port *port;
1945 struct hisi_sas_slot *slot;
1946 struct asd_sas_port *sas_port = device->port;
1947 struct hisi_sas_cmd_hdr *cmd_hdr_base;
1948 int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx;
1949 unsigned long flags;
1950 int wr_q_index;
1951
1952 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags)))
1953 return -EINVAL;
1954
1955 if (!device->port)
1956 return -1;
1957
1958 port = to_hisi_sas_port(sas_port);
1959
1960
1961 rc = hisi_sas_slot_index_alloc(hisi_hba, NULL);
1962 if (rc < 0)
1963 goto err_out;
1964
1965 slot_idx = rc;
1966 slot = &hisi_hba->slot_info[slot_idx];
1967
1968 spin_lock(&dq->lock);
1969 wr_q_index = dq->wr_point;
1970 dq->wr_point = (dq->wr_point + 1) % HISI_SAS_QUEUE_SLOTS;
1971 list_add_tail(&slot->delivery, &dq->list);
1972 spin_unlock(&dq->lock);
1973 spin_lock(&sas_dev->lock);
1974 list_add_tail(&slot->entry, &sas_dev->list);
1975 spin_unlock(&sas_dev->lock);
1976
1977 dlvry_queue = dq->id;
1978 dlvry_queue_slot = wr_q_index;
1979
1980 slot->device_id = sas_dev->device_id;
1981 slot->n_elem = n_elem;
1982 slot->dlvry_queue = dlvry_queue;
1983 slot->dlvry_queue_slot = dlvry_queue_slot;
1984 cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
1985 slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
1986 slot->task = task;
1987 slot->port = port;
1988 slot->is_internal = true;
1989 task->lldd_task = slot;
1990
1991 memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
1992 memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ);
1993 memset(hisi_sas_status_buf_addr_mem(slot), 0,
1994 sizeof(struct hisi_sas_err_record));
1995
1996 hisi_sas_task_prep_abort(hisi_hba, slot, device_id,
1997 abort_flag, task_tag);
1998
1999 spin_lock_irqsave(&task->task_state_lock, flags);
2000 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
2001 spin_unlock_irqrestore(&task->task_state_lock, flags);
2002 WRITE_ONCE(slot->ready, 1);
2003
2004 spin_lock(&dq->lock);
2005 hisi_hba->hw->start_delivery(dq);
2006 spin_unlock(&dq->lock);
2007
2008 return 0;
2009
2010err_out:
2011 dev_err(dev, "internal abort task prep: failed[%d]!\n", rc);
2012
2013 return rc;
2014}
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026static int
2027_hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
2028 struct domain_device *device, int abort_flag,
2029 int tag, struct hisi_sas_dq *dq)
2030{
2031 struct sas_task *task;
2032 struct hisi_sas_device *sas_dev = device->lldd_dev;
2033 struct device *dev = hisi_hba->dev;
2034 int res;
2035
2036
2037
2038
2039
2040
2041
2042 if (!hisi_hba->hw->prep_abort)
2043 return TMF_RESP_FUNC_FAILED;
2044
2045 task = sas_alloc_slow_task(GFP_KERNEL);
2046 if (!task)
2047 return -ENOMEM;
2048
2049 task->dev = device;
2050 task->task_proto = device->tproto;
2051 task->task_done = hisi_sas_task_done;
2052 task->slow_task->timer.function = hisi_sas_tmf_timedout;
2053 task->slow_task->timer.expires = jiffies + INTERNAL_ABORT_TIMEOUT * HZ;
2054 add_timer(&task->slow_task->timer);
2055
2056 res = hisi_sas_internal_abort_task_exec(hisi_hba, sas_dev->device_id,
2057 task, abort_flag, tag, dq);
2058 if (res) {
2059 del_timer(&task->slow_task->timer);
2060 dev_err(dev, "internal task abort: executing internal task failed: %d\n",
2061 res);
2062 goto exit;
2063 }
2064 wait_for_completion(&task->slow_task->completion);
2065 res = TMF_RESP_FUNC_FAILED;
2066
2067
2068 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
2069 if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct[0].itct)
2070 queue_work(hisi_hba->wq, &hisi_hba->debugfs_work);
2071
2072 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
2073 struct hisi_sas_slot *slot = task->lldd_task;
2074
2075 if (slot) {
2076 struct hisi_sas_cq *cq =
2077 &hisi_hba->cq[slot->dlvry_queue];
2078
2079
2080
2081
2082 synchronize_irq(cq->irq_no);
2083 slot->task = NULL;
2084 }
2085 dev_err(dev, "internal task abort: timeout and not done.\n");
2086
2087 res = -EIO;
2088 goto exit;
2089 } else
2090 dev_err(dev, "internal task abort: timeout.\n");
2091 }
2092
2093 if (task->task_status.resp == SAS_TASK_COMPLETE &&
2094 task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
2095 res = TMF_RESP_FUNC_COMPLETE;
2096 goto exit;
2097 }
2098
2099 if (task->task_status.resp == SAS_TASK_COMPLETE &&
2100 task->task_status.stat == TMF_RESP_FUNC_SUCC) {
2101 res = TMF_RESP_FUNC_SUCC;
2102 goto exit;
2103 }
2104
2105exit:
2106 dev_dbg(dev, "internal task abort: task to dev %016llx task=%pK resp: 0x%x sts 0x%x\n",
2107 SAS_ADDR(device->sas_addr), task,
2108 task->task_status.resp,
2109 task->task_status.stat);
2110 sas_free_task(task);
2111
2112 return res;
2113}
2114
2115static int
2116hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
2117 struct domain_device *device,
2118 int abort_flag, int tag)
2119{
2120 struct hisi_sas_slot *slot;
2121 struct device *dev = hisi_hba->dev;
2122 struct hisi_sas_dq *dq;
2123 int i, rc;
2124
2125 switch (abort_flag) {
2126 case HISI_SAS_INT_ABT_CMD:
2127 slot = &hisi_hba->slot_info[tag];
2128 dq = &hisi_hba->dq[slot->dlvry_queue];
2129 return _hisi_sas_internal_task_abort(hisi_hba, device,
2130 abort_flag, tag, dq);
2131 case HISI_SAS_INT_ABT_DEV:
2132 for (i = 0; i < hisi_hba->cq_nvecs; i++) {
2133 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2134 const struct cpumask *mask = cq->irq_mask;
2135
2136 if (mask && !cpumask_intersects(cpu_online_mask, mask))
2137 continue;
2138 dq = &hisi_hba->dq[i];
2139 rc = _hisi_sas_internal_task_abort(hisi_hba, device,
2140 abort_flag, tag,
2141 dq);
2142 if (rc)
2143 return rc;
2144 }
2145 break;
2146 default:
2147 dev_err(dev, "Unrecognised internal abort flag (%d)\n",
2148 abort_flag);
2149 return -EINVAL;
2150 }
2151
2152 return 0;
2153}
2154
2155static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy)
2156{
2157 hisi_sas_port_notify_formed(sas_phy);
2158}
2159
2160static int hisi_sas_write_gpio(struct sas_ha_struct *sha, u8 reg_type,
2161 u8 reg_index, u8 reg_count, u8 *write_data)
2162{
2163 struct hisi_hba *hisi_hba = sha->lldd_ha;
2164
2165 if (!hisi_hba->hw->write_gpio)
2166 return -EOPNOTSUPP;
2167
2168 return hisi_hba->hw->write_gpio(hisi_hba, reg_type,
2169 reg_index, reg_count, write_data);
2170}
2171
2172static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy)
2173{
2174 struct asd_sas_phy *sas_phy = &phy->sas_phy;
2175 struct sas_phy *sphy = sas_phy->phy;
2176 unsigned long flags;
2177
2178 phy->phy_attached = 0;
2179 phy->phy_type = 0;
2180 phy->port = NULL;
2181
2182 spin_lock_irqsave(&phy->lock, flags);
2183 if (phy->enable)
2184 sphy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
2185 else
2186 sphy->negotiated_linkrate = SAS_PHY_DISABLED;
2187 spin_unlock_irqrestore(&phy->lock, flags);
2188}
2189
2190void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy,
2191 gfp_t gfp_flags)
2192{
2193 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
2194 struct asd_sas_phy *sas_phy = &phy->sas_phy;
2195 struct device *dev = hisi_hba->dev;
2196
2197 if (rdy) {
2198
2199 hisi_sas_bytes_dmaed(hisi_hba, phy_no, gfp_flags);
2200 hisi_sas_port_notify_formed(sas_phy);
2201 } else {
2202 struct hisi_sas_port *port = phy->port;
2203
2204 if (test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags) ||
2205 phy->in_reset) {
2206 dev_info(dev, "ignore flutter phy%d down\n", phy_no);
2207 return;
2208 }
2209
2210 sas_notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL, gfp_flags);
2211 sas_phy_disconnected(sas_phy);
2212
2213 if (port) {
2214 if (phy->phy_type & PORT_TYPE_SAS) {
2215 int port_id = port->id;
2216
2217 if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba,
2218 port_id))
2219 port->port_attached = 0;
2220 } else if (phy->phy_type & PORT_TYPE_SATA)
2221 port->port_attached = 0;
2222 }
2223 hisi_sas_phy_disconnected(phy);
2224 }
2225}
2226EXPORT_SYMBOL_GPL(hisi_sas_phy_down);
2227
2228void hisi_sas_sync_irqs(struct hisi_hba *hisi_hba)
2229{
2230 int i;
2231
2232 for (i = 0; i < hisi_hba->cq_nvecs; i++) {
2233 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2234
2235 synchronize_irq(cq->irq_no);
2236 }
2237}
2238EXPORT_SYMBOL_GPL(hisi_sas_sync_irqs);
2239
2240int hisi_sas_host_reset(struct Scsi_Host *shost, int reset_type)
2241{
2242 struct hisi_hba *hisi_hba = shost_priv(shost);
2243
2244 if (reset_type != SCSI_ADAPTER_RESET)
2245 return -EOPNOTSUPP;
2246
2247 queue_work(hisi_hba->wq, &hisi_hba->rst_work);
2248
2249 return 0;
2250}
2251EXPORT_SYMBOL_GPL(hisi_sas_host_reset);
2252
2253struct scsi_transport_template *hisi_sas_stt;
2254EXPORT_SYMBOL_GPL(hisi_sas_stt);
2255
2256static struct sas_domain_function_template hisi_sas_transport_ops = {
2257 .lldd_dev_found = hisi_sas_dev_found,
2258 .lldd_dev_gone = hisi_sas_dev_gone,
2259 .lldd_execute_task = hisi_sas_queue_command,
2260 .lldd_control_phy = hisi_sas_control_phy,
2261 .lldd_abort_task = hisi_sas_abort_task,
2262 .lldd_abort_task_set = hisi_sas_abort_task_set,
2263 .lldd_clear_aca = hisi_sas_clear_aca,
2264 .lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset,
2265 .lldd_lu_reset = hisi_sas_lu_reset,
2266 .lldd_query_task = hisi_sas_query_task,
2267 .lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha,
2268 .lldd_port_formed = hisi_sas_port_formed,
2269 .lldd_write_gpio = hisi_sas_write_gpio,
2270};
2271
2272void hisi_sas_init_mem(struct hisi_hba *hisi_hba)
2273{
2274 int i, s, j, max_command_entries = HISI_SAS_MAX_COMMANDS;
2275 struct hisi_sas_breakpoint *sata_breakpoint = hisi_hba->sata_breakpoint;
2276
2277 for (i = 0; i < hisi_hba->queue_count; i++) {
2278 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2279 struct hisi_sas_dq *dq = &hisi_hba->dq[i];
2280 struct hisi_sas_cmd_hdr *cmd_hdr = hisi_hba->cmd_hdr[i];
2281
2282 s = sizeof(struct hisi_sas_cmd_hdr);
2283 for (j = 0; j < HISI_SAS_QUEUE_SLOTS; j++)
2284 memset(&cmd_hdr[j], 0, s);
2285
2286 dq->wr_point = 0;
2287
2288 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
2289 memset(hisi_hba->complete_hdr[i], 0, s);
2290 cq->rd_point = 0;
2291 }
2292
2293 s = sizeof(struct hisi_sas_initial_fis) * hisi_hba->n_phy;
2294 memset(hisi_hba->initial_fis, 0, s);
2295
2296 s = max_command_entries * sizeof(struct hisi_sas_iost);
2297 memset(hisi_hba->iost, 0, s);
2298
2299 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
2300 memset(hisi_hba->breakpoint, 0, s);
2301
2302 s = sizeof(struct hisi_sas_sata_breakpoint);
2303 for (j = 0; j < HISI_SAS_MAX_ITCT_ENTRIES; j++)
2304 memset(&sata_breakpoint[j], 0, s);
2305}
2306EXPORT_SYMBOL_GPL(hisi_sas_init_mem);
2307
2308int hisi_sas_alloc(struct hisi_hba *hisi_hba)
2309{
2310 struct device *dev = hisi_hba->dev;
2311 int i, j, s, max_command_entries = HISI_SAS_MAX_COMMANDS;
2312 int max_command_entries_ru, sz_slot_buf_ru;
2313 int blk_cnt, slots_per_blk;
2314
2315 sema_init(&hisi_hba->sem, 1);
2316 spin_lock_init(&hisi_hba->lock);
2317 for (i = 0; i < hisi_hba->n_phy; i++) {
2318 hisi_sas_phy_init(hisi_hba, i);
2319 hisi_hba->port[i].port_attached = 0;
2320 hisi_hba->port[i].id = -1;
2321 }
2322
2323 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
2324 hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED;
2325 hisi_hba->devices[i].device_id = i;
2326 hisi_hba->devices[i].dev_status = HISI_SAS_DEV_INIT;
2327 }
2328
2329 for (i = 0; i < hisi_hba->queue_count; i++) {
2330 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2331 struct hisi_sas_dq *dq = &hisi_hba->dq[i];
2332
2333
2334 cq->id = i;
2335 cq->hisi_hba = hisi_hba;
2336
2337
2338 spin_lock_init(&dq->lock);
2339 INIT_LIST_HEAD(&dq->list);
2340 dq->id = i;
2341 dq->hisi_hba = hisi_hba;
2342
2343
2344 s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
2345 hisi_hba->cmd_hdr[i] = dmam_alloc_coherent(dev, s,
2346 &hisi_hba->cmd_hdr_dma[i],
2347 GFP_KERNEL);
2348 if (!hisi_hba->cmd_hdr[i])
2349 goto err_out;
2350
2351
2352 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
2353 hisi_hba->complete_hdr[i] = dmam_alloc_coherent(dev, s,
2354 &hisi_hba->complete_hdr_dma[i],
2355 GFP_KERNEL);
2356 if (!hisi_hba->complete_hdr[i])
2357 goto err_out;
2358 }
2359
2360 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
2361 hisi_hba->itct = dmam_alloc_coherent(dev, s, &hisi_hba->itct_dma,
2362 GFP_KERNEL);
2363 if (!hisi_hba->itct)
2364 goto err_out;
2365
2366 hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries,
2367 sizeof(struct hisi_sas_slot),
2368 GFP_KERNEL);
2369 if (!hisi_hba->slot_info)
2370 goto err_out;
2371
2372
2373 max_command_entries_ru = roundup(max_command_entries, 64);
2374 if (hisi_hba->prot_mask & HISI_SAS_DIX_PROT_MASK)
2375 sz_slot_buf_ru = sizeof(struct hisi_sas_slot_dif_buf_table);
2376 else
2377 sz_slot_buf_ru = sizeof(struct hisi_sas_slot_buf_table);
2378 sz_slot_buf_ru = roundup(sz_slot_buf_ru, 64);
2379 s = max(lcm(max_command_entries_ru, sz_slot_buf_ru), PAGE_SIZE);
2380 blk_cnt = (max_command_entries_ru * sz_slot_buf_ru) / s;
2381 slots_per_blk = s / sz_slot_buf_ru;
2382
2383 for (i = 0; i < blk_cnt; i++) {
2384 int slot_index = i * slots_per_blk;
2385 dma_addr_t buf_dma;
2386 void *buf;
2387
2388 buf = dmam_alloc_coherent(dev, s, &buf_dma,
2389 GFP_KERNEL);
2390 if (!buf)
2391 goto err_out;
2392
2393 for (j = 0; j < slots_per_blk; j++, slot_index++) {
2394 struct hisi_sas_slot *slot;
2395
2396 slot = &hisi_hba->slot_info[slot_index];
2397 slot->buf = buf;
2398 slot->buf_dma = buf_dma;
2399 slot->idx = slot_index;
2400
2401 buf += sz_slot_buf_ru;
2402 buf_dma += sz_slot_buf_ru;
2403 }
2404 }
2405
2406 s = max_command_entries * sizeof(struct hisi_sas_iost);
2407 hisi_hba->iost = dmam_alloc_coherent(dev, s, &hisi_hba->iost_dma,
2408 GFP_KERNEL);
2409 if (!hisi_hba->iost)
2410 goto err_out;
2411
2412 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
2413 hisi_hba->breakpoint = dmam_alloc_coherent(dev, s,
2414 &hisi_hba->breakpoint_dma,
2415 GFP_KERNEL);
2416 if (!hisi_hba->breakpoint)
2417 goto err_out;
2418
2419 hisi_hba->slot_index_count = max_command_entries;
2420 s = hisi_hba->slot_index_count / BITS_PER_BYTE;
2421 hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL);
2422 if (!hisi_hba->slot_index_tags)
2423 goto err_out;
2424
2425 s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
2426 hisi_hba->initial_fis = dmam_alloc_coherent(dev, s,
2427 &hisi_hba->initial_fis_dma,
2428 GFP_KERNEL);
2429 if (!hisi_hba->initial_fis)
2430 goto err_out;
2431
2432 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_sata_breakpoint);
2433 hisi_hba->sata_breakpoint = dmam_alloc_coherent(dev, s,
2434 &hisi_hba->sata_breakpoint_dma,
2435 GFP_KERNEL);
2436 if (!hisi_hba->sata_breakpoint)
2437 goto err_out;
2438
2439 hisi_sas_slot_index_init(hisi_hba);
2440 hisi_hba->last_slot_index = HISI_SAS_UNRESERVED_IPTT;
2441
2442 hisi_hba->wq = create_singlethread_workqueue(dev_name(dev));
2443 if (!hisi_hba->wq) {
2444 dev_err(dev, "sas_alloc: failed to create workqueue\n");
2445 goto err_out;
2446 }
2447
2448 return 0;
2449err_out:
2450 return -ENOMEM;
2451}
2452EXPORT_SYMBOL_GPL(hisi_sas_alloc);
2453
2454void hisi_sas_free(struct hisi_hba *hisi_hba)
2455{
2456 int i;
2457
2458 for (i = 0; i < hisi_hba->n_phy; i++) {
2459 struct hisi_sas_phy *phy = &hisi_hba->phy[i];
2460
2461 del_timer_sync(&phy->timer);
2462 }
2463
2464 if (hisi_hba->wq)
2465 destroy_workqueue(hisi_hba->wq);
2466}
2467EXPORT_SYMBOL_GPL(hisi_sas_free);
2468
2469void hisi_sas_rst_work_handler(struct work_struct *work)
2470{
2471 struct hisi_hba *hisi_hba =
2472 container_of(work, struct hisi_hba, rst_work);
2473
2474 hisi_sas_controller_reset(hisi_hba);
2475}
2476EXPORT_SYMBOL_GPL(hisi_sas_rst_work_handler);
2477
2478void hisi_sas_sync_rst_work_handler(struct work_struct *work)
2479{
2480 struct hisi_sas_rst *rst =
2481 container_of(work, struct hisi_sas_rst, work);
2482
2483 if (!hisi_sas_controller_reset(rst->hisi_hba))
2484 rst->done = true;
2485 complete(rst->completion);
2486}
2487EXPORT_SYMBOL_GPL(hisi_sas_sync_rst_work_handler);
2488
2489int hisi_sas_get_fw_info(struct hisi_hba *hisi_hba)
2490{
2491 struct device *dev = hisi_hba->dev;
2492 struct platform_device *pdev = hisi_hba->platform_dev;
2493 struct device_node *np = pdev ? pdev->dev.of_node : NULL;
2494 struct clk *refclk;
2495
2496 if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr,
2497 SAS_ADDR_SIZE)) {
2498 dev_err(dev, "could not get property sas-addr\n");
2499 return -ENOENT;
2500 }
2501
2502 if (np) {
2503
2504
2505
2506
2507 hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np,
2508 "hisilicon,sas-syscon");
2509 if (IS_ERR(hisi_hba->ctrl)) {
2510 dev_err(dev, "could not get syscon\n");
2511 return -ENOENT;
2512 }
2513
2514 if (device_property_read_u32(dev, "ctrl-reset-reg",
2515 &hisi_hba->ctrl_reset_reg)) {
2516 dev_err(dev, "could not get property ctrl-reset-reg\n");
2517 return -ENOENT;
2518 }
2519
2520 if (device_property_read_u32(dev, "ctrl-reset-sts-reg",
2521 &hisi_hba->ctrl_reset_sts_reg)) {
2522 dev_err(dev, "could not get property ctrl-reset-sts-reg\n");
2523 return -ENOENT;
2524 }
2525
2526 if (device_property_read_u32(dev, "ctrl-clock-ena-reg",
2527 &hisi_hba->ctrl_clock_ena_reg)) {
2528 dev_err(dev, "could not get property ctrl-clock-ena-reg\n");
2529 return -ENOENT;
2530 }
2531 }
2532
2533 refclk = devm_clk_get(dev, NULL);
2534 if (IS_ERR(refclk))
2535 dev_dbg(dev, "no ref clk property\n");
2536 else
2537 hisi_hba->refclk_frequency_mhz = clk_get_rate(refclk) / 1000000;
2538
2539 if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy)) {
2540 dev_err(dev, "could not get property phy-count\n");
2541 return -ENOENT;
2542 }
2543
2544 if (device_property_read_u32(dev, "queue-count",
2545 &hisi_hba->queue_count)) {
2546 dev_err(dev, "could not get property queue-count\n");
2547 return -ENOENT;
2548 }
2549
2550 return 0;
2551}
2552EXPORT_SYMBOL_GPL(hisi_sas_get_fw_info);
2553
2554static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
2555 const struct hisi_sas_hw *hw)
2556{
2557 struct resource *res;
2558 struct Scsi_Host *shost;
2559 struct hisi_hba *hisi_hba;
2560 struct device *dev = &pdev->dev;
2561 int error;
2562
2563 shost = scsi_host_alloc(hw->sht, sizeof(*hisi_hba));
2564 if (!shost) {
2565 dev_err(dev, "scsi host alloc failed\n");
2566 return NULL;
2567 }
2568 hisi_hba = shost_priv(shost);
2569
2570 INIT_WORK(&hisi_hba->rst_work, hisi_sas_rst_work_handler);
2571 hisi_hba->hw = hw;
2572 hisi_hba->dev = dev;
2573 hisi_hba->platform_dev = pdev;
2574 hisi_hba->shost = shost;
2575 SHOST_TO_SAS_HA(shost) = &hisi_hba->sha;
2576
2577 timer_setup(&hisi_hba->timer, NULL, 0);
2578
2579 if (hisi_sas_get_fw_info(hisi_hba) < 0)
2580 goto err_out;
2581
2582 error = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
2583 if (error)
2584 error = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
2585
2586 if (error) {
2587 dev_err(dev, "No usable DMA addressing method\n");
2588 goto err_out;
2589 }
2590
2591 hisi_hba->regs = devm_platform_ioremap_resource(pdev, 0);
2592 if (IS_ERR(hisi_hba->regs))
2593 goto err_out;
2594
2595 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2596 if (res) {
2597 hisi_hba->sgpio_regs = devm_ioremap_resource(dev, res);
2598 if (IS_ERR(hisi_hba->sgpio_regs))
2599 goto err_out;
2600 }
2601
2602 if (hisi_sas_alloc(hisi_hba)) {
2603 hisi_sas_free(hisi_hba);
2604 goto err_out;
2605 }
2606
2607 return shost;
2608err_out:
2609 scsi_host_put(shost);
2610 dev_err(dev, "shost alloc failed\n");
2611 return NULL;
2612}
2613
2614static int hisi_sas_interrupt_preinit(struct hisi_hba *hisi_hba)
2615{
2616 if (hisi_hba->hw->interrupt_preinit)
2617 return hisi_hba->hw->interrupt_preinit(hisi_hba);
2618 return 0;
2619}
2620
2621int hisi_sas_probe(struct platform_device *pdev,
2622 const struct hisi_sas_hw *hw)
2623{
2624 struct Scsi_Host *shost;
2625 struct hisi_hba *hisi_hba;
2626 struct device *dev = &pdev->dev;
2627 struct asd_sas_phy **arr_phy;
2628 struct asd_sas_port **arr_port;
2629 struct sas_ha_struct *sha;
2630 int rc, phy_nr, port_nr, i;
2631
2632 shost = hisi_sas_shost_alloc(pdev, hw);
2633 if (!shost)
2634 return -ENOMEM;
2635
2636 sha = SHOST_TO_SAS_HA(shost);
2637 hisi_hba = shost_priv(shost);
2638 platform_set_drvdata(pdev, sha);
2639
2640 phy_nr = port_nr = hisi_hba->n_phy;
2641
2642 arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL);
2643 arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL);
2644 if (!arr_phy || !arr_port) {
2645 rc = -ENOMEM;
2646 goto err_out_ha;
2647 }
2648
2649 sha->sas_phy = arr_phy;
2650 sha->sas_port = arr_port;
2651 sha->lldd_ha = hisi_hba;
2652
2653 shost->transportt = hisi_sas_stt;
2654 shost->max_id = HISI_SAS_MAX_DEVICES;
2655 shost->max_lun = ~0;
2656 shost->max_channel = 1;
2657 shost->max_cmd_len = 16;
2658 if (hisi_hba->hw->slot_index_alloc) {
2659 shost->can_queue = HISI_SAS_MAX_COMMANDS;
2660 shost->cmd_per_lun = HISI_SAS_MAX_COMMANDS;
2661 } else {
2662 shost->can_queue = HISI_SAS_UNRESERVED_IPTT;
2663 shost->cmd_per_lun = HISI_SAS_UNRESERVED_IPTT;
2664 }
2665
2666 sha->sas_ha_name = DRV_NAME;
2667 sha->dev = hisi_hba->dev;
2668 sha->lldd_module = THIS_MODULE;
2669 sha->sas_addr = &hisi_hba->sas_addr[0];
2670 sha->num_phys = hisi_hba->n_phy;
2671 sha->core.shost = hisi_hba->shost;
2672
2673 for (i = 0; i < hisi_hba->n_phy; i++) {
2674 sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy;
2675 sha->sas_port[i] = &hisi_hba->port[i].sas_port;
2676 }
2677
2678 rc = hisi_sas_interrupt_preinit(hisi_hba);
2679 if (rc)
2680 goto err_out_ha;
2681
2682 rc = scsi_add_host(shost, &pdev->dev);
2683 if (rc)
2684 goto err_out_ha;
2685
2686 rc = sas_register_ha(sha);
2687 if (rc)
2688 goto err_out_register_ha;
2689
2690 rc = hisi_hba->hw->hw_init(hisi_hba);
2691 if (rc)
2692 goto err_out_register_ha;
2693
2694 scsi_scan_host(shost);
2695
2696 return 0;
2697
2698err_out_register_ha:
2699 scsi_remove_host(shost);
2700err_out_ha:
2701 hisi_sas_free(hisi_hba);
2702 scsi_host_put(shost);
2703 return rc;
2704}
2705EXPORT_SYMBOL_GPL(hisi_sas_probe);
2706
2707int hisi_sas_remove(struct platform_device *pdev)
2708{
2709 struct sas_ha_struct *sha = platform_get_drvdata(pdev);
2710 struct hisi_hba *hisi_hba = sha->lldd_ha;
2711 struct Scsi_Host *shost = sha->core.shost;
2712
2713 if (timer_pending(&hisi_hba->timer))
2714 del_timer(&hisi_hba->timer);
2715
2716 sas_unregister_ha(sha);
2717 sas_remove_host(sha->core.shost);
2718
2719 hisi_sas_free(hisi_hba);
2720 scsi_host_put(shost);
2721 return 0;
2722}
2723EXPORT_SYMBOL_GPL(hisi_sas_remove);
2724
2725#if IS_ENABLED(CONFIG_SCSI_HISI_SAS_DEBUGFS_DEFAULT_ENABLE)
2726#define DEBUGFS_ENABLE_DEFAULT "enabled"
2727bool hisi_sas_debugfs_enable = true;
2728u32 hisi_sas_debugfs_dump_count = 50;
2729#else
2730#define DEBUGFS_ENABLE_DEFAULT "disabled"
2731bool hisi_sas_debugfs_enable;
2732u32 hisi_sas_debugfs_dump_count = 1;
2733#endif
2734
2735EXPORT_SYMBOL_GPL(hisi_sas_debugfs_enable);
2736module_param_named(debugfs_enable, hisi_sas_debugfs_enable, bool, 0444);
2737MODULE_PARM_DESC(hisi_sas_debugfs_enable,
2738 "Enable driver debugfs (default "DEBUGFS_ENABLE_DEFAULT")");
2739
2740EXPORT_SYMBOL_GPL(hisi_sas_debugfs_dump_count);
2741module_param_named(debugfs_dump_count, hisi_sas_debugfs_dump_count, uint, 0444);
2742MODULE_PARM_DESC(hisi_sas_debugfs_dump_count, "Number of debugfs dumps to allow");
2743
2744struct dentry *hisi_sas_debugfs_dir;
2745EXPORT_SYMBOL_GPL(hisi_sas_debugfs_dir);
2746
2747static __init int hisi_sas_init(void)
2748{
2749 hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops);
2750 if (!hisi_sas_stt)
2751 return -ENOMEM;
2752
2753 if (hisi_sas_debugfs_enable) {
2754 hisi_sas_debugfs_dir = debugfs_create_dir("hisi_sas", NULL);
2755 if (hisi_sas_debugfs_dump_count > HISI_SAS_MAX_DEBUGFS_DUMP) {
2756 pr_info("hisi_sas: Limiting debugfs dump count\n");
2757 hisi_sas_debugfs_dump_count = HISI_SAS_MAX_DEBUGFS_DUMP;
2758 }
2759 }
2760
2761 return 0;
2762}
2763
2764static __exit void hisi_sas_exit(void)
2765{
2766 sas_release_transport(hisi_sas_stt);
2767
2768 debugfs_remove(hisi_sas_debugfs_dir);
2769}
2770
2771module_init(hisi_sas_init);
2772module_exit(hisi_sas_exit);
2773
2774MODULE_LICENSE("GPL");
2775MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
2776MODULE_DESCRIPTION("HISILICON SAS controller driver");
2777MODULE_ALIAS("platform:" DRV_NAME);
2778
