2 * Copyright (c) 2015 Linaro Ltd.
3 * Copyright (c) 2015 Hisilicon Limited.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
13 #include "../libsas/sas_internal.h"
14 #define DRV_NAME "hisi_sas"
16 #define DEV_IS_GONE(dev) \
17 ((!dev) || (dev->dev_type == SAS_PHY_UNUSED))
19 static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device,
20 u8 *lun, struct hisi_sas_tmf_task *tmf);
22 hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
23 struct domain_device *device,
24 int abort_flag, int tag);
25 static int hisi_sas_softreset_ata_disk(struct domain_device *device);
27 u8 hisi_sas_get_ata_protocol(u8 cmd, int direction)
30 case ATA_CMD_FPDMA_WRITE:
31 case ATA_CMD_FPDMA_READ:
32 case ATA_CMD_FPDMA_RECV:
33 case ATA_CMD_FPDMA_SEND:
34 case ATA_CMD_NCQ_NON_DATA:
35 return HISI_SAS_SATA_PROTOCOL_FPDMA;
37 case ATA_CMD_DOWNLOAD_MICRO:
39 case ATA_CMD_PMP_READ:
40 case ATA_CMD_READ_LOG_EXT:
41 case ATA_CMD_PIO_READ:
42 case ATA_CMD_PIO_READ_EXT:
43 case ATA_CMD_PMP_WRITE:
44 case ATA_CMD_WRITE_LOG_EXT:
45 case ATA_CMD_PIO_WRITE:
46 case ATA_CMD_PIO_WRITE_EXT:
47 return HISI_SAS_SATA_PROTOCOL_PIO;
50 case ATA_CMD_DOWNLOAD_MICRO_DMA:
51 case ATA_CMD_PMP_READ_DMA:
52 case ATA_CMD_PMP_WRITE_DMA:
54 case ATA_CMD_READ_EXT:
55 case ATA_CMD_READ_LOG_DMA_EXT:
56 case ATA_CMD_READ_STREAM_DMA_EXT:
57 case ATA_CMD_TRUSTED_RCV_DMA:
58 case ATA_CMD_TRUSTED_SND_DMA:
60 case ATA_CMD_WRITE_EXT:
61 case ATA_CMD_WRITE_FUA_EXT:
62 case ATA_CMD_WRITE_QUEUED:
63 case ATA_CMD_WRITE_LOG_DMA_EXT:
64 case ATA_CMD_WRITE_STREAM_DMA_EXT:
65 case ATA_CMD_ZAC_MGMT_IN:
66 return HISI_SAS_SATA_PROTOCOL_DMA;
68 case ATA_CMD_CHK_POWER:
69 case ATA_CMD_DEV_RESET:
72 case ATA_CMD_FLUSH_EXT:
74 case ATA_CMD_VERIFY_EXT:
75 case ATA_CMD_SET_FEATURES:
77 case ATA_CMD_STANDBYNOW1:
78 case ATA_CMD_ZAC_MGMT_OUT:
79 return HISI_SAS_SATA_PROTOCOL_NONDATA;
81 if (direction == DMA_NONE)
82 return HISI_SAS_SATA_PROTOCOL_NONDATA;
83 return HISI_SAS_SATA_PROTOCOL_PIO;
86 EXPORT_SYMBOL_GPL(hisi_sas_get_ata_protocol);
88 void hisi_sas_sata_done(struct sas_task *task,
89 struct hisi_sas_slot *slot)
91 struct task_status_struct *ts = &task->task_status;
92 struct ata_task_resp *resp = (struct ata_task_resp *)ts->buf;
93 struct hisi_sas_status_buffer *status_buf =
94 hisi_sas_status_buf_addr_mem(slot);
95 u8 *iu = &status_buf->iu[0];
96 struct dev_to_host_fis *d2h = (struct dev_to_host_fis *)iu;
98 resp->frame_len = sizeof(struct dev_to_host_fis);
99 memcpy(&resp->ending_fis[0], d2h, sizeof(struct dev_to_host_fis));
101 ts->buf_valid_size = sizeof(*resp);
103 EXPORT_SYMBOL_GPL(hisi_sas_sata_done);
105 int hisi_sas_get_ncq_tag(struct sas_task *task, u32 *tag)
107 struct ata_queued_cmd *qc = task->uldd_task;
110 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
111 qc->tf.command == ATA_CMD_FPDMA_READ) {
118 EXPORT_SYMBOL_GPL(hisi_sas_get_ncq_tag);
120 static struct hisi_hba *dev_to_hisi_hba(struct domain_device *device)
122 return device->port->ha->lldd_ha;
125 struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port)
127 return container_of(sas_port, struct hisi_sas_port, sas_port);
129 EXPORT_SYMBOL_GPL(to_hisi_sas_port);
131 void hisi_sas_stop_phys(struct hisi_hba *hisi_hba)
135 for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++)
136 hisi_hba->hw->phy_disable(hisi_hba, phy_no);
138 EXPORT_SYMBOL_GPL(hisi_sas_stop_phys);
140 static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx)
142 void *bitmap = hisi_hba->slot_index_tags;
144 clear_bit(slot_idx, bitmap);
147 static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx)
149 hisi_sas_slot_index_clear(hisi_hba, slot_idx);
152 static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx)
154 void *bitmap = hisi_hba->slot_index_tags;
156 set_bit(slot_idx, bitmap);
159 static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba, int *slot_idx)
162 void *bitmap = hisi_hba->slot_index_tags;
164 index = find_first_zero_bit(bitmap, hisi_hba->slot_index_count);
165 if (index >= hisi_hba->slot_index_count)
166 return -SAS_QUEUE_FULL;
167 hisi_sas_slot_index_set(hisi_hba, index);
172 static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba)
176 for (i = 0; i < hisi_hba->slot_index_count; ++i)
177 hisi_sas_slot_index_clear(hisi_hba, i);
180 void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task,
181 struct hisi_sas_slot *slot)
185 struct device *dev = hisi_hba->dev;
186 struct domain_device *device = task->dev;
187 struct hisi_sas_device *sas_dev = device->lldd_dev;
189 if (!task->lldd_task)
192 task->lldd_task = NULL;
194 if (!sas_protocol_ata(task->task_proto))
196 dma_unmap_sg(dev, task->scatter, slot->n_elem,
200 atomic64_dec(&sas_dev->running_req);
204 dma_pool_free(hisi_hba->buffer_pool, slot->buf, slot->buf_dma);
206 list_del_init(&slot->entry);
210 hisi_sas_slot_index_free(hisi_hba, slot->idx);
212 /* slot memory is fully zeroed when it is reused */
214 EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free);
216 static int hisi_sas_task_prep_smp(struct hisi_hba *hisi_hba,
217 struct hisi_sas_slot *slot)
219 return hisi_hba->hw->prep_smp(hisi_hba, slot);
222 static int hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba,
223 struct hisi_sas_slot *slot, int is_tmf,
224 struct hisi_sas_tmf_task *tmf)
226 return hisi_hba->hw->prep_ssp(hisi_hba, slot, is_tmf, tmf);
229 static int hisi_sas_task_prep_ata(struct hisi_hba *hisi_hba,
230 struct hisi_sas_slot *slot)
232 return hisi_hba->hw->prep_stp(hisi_hba, slot);
235 static int hisi_sas_task_prep_abort(struct hisi_hba *hisi_hba,
236 struct hisi_sas_slot *slot,
237 int device_id, int abort_flag, int tag_to_abort)
239 return hisi_hba->hw->prep_abort(hisi_hba, slot,
240 device_id, abort_flag, tag_to_abort);
244 * This function will issue an abort TMF regardless of whether the
245 * task is in the sdev or not. Then it will do the task complete
246 * cleanup and callbacks.
248 static void hisi_sas_slot_abort(struct work_struct *work)
250 struct hisi_sas_slot *abort_slot =
251 container_of(work, struct hisi_sas_slot, abort_slot);
252 struct sas_task *task = abort_slot->task;
253 struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev);
254 struct scsi_cmnd *cmnd = task->uldd_task;
255 struct hisi_sas_tmf_task tmf_task;
257 struct device *dev = hisi_hba->dev;
258 int tag = abort_slot->idx;
261 if (!(task->task_proto & SAS_PROTOCOL_SSP)) {
262 dev_err(dev, "cannot abort slot for non-ssp task\n");
266 int_to_scsilun(cmnd->device->lun, &lun);
267 tmf_task.tmf = TMF_ABORT_TASK;
268 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
270 hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun, &tmf_task);
272 /* Do cleanup for this task */
273 spin_lock_irqsave(&hisi_hba->lock, flags);
274 hisi_sas_slot_task_free(hisi_hba, task, abort_slot);
275 spin_unlock_irqrestore(&hisi_hba->lock, flags);
277 task->task_done(task);
280 static int hisi_sas_task_prep(struct sas_task *task, struct hisi_sas_dq
281 *dq, int is_tmf, struct hisi_sas_tmf_task *tmf,
284 struct hisi_hba *hisi_hba = dq->hisi_hba;
285 struct domain_device *device = task->dev;
286 struct hisi_sas_device *sas_dev = device->lldd_dev;
287 struct hisi_sas_port *port;
288 struct hisi_sas_slot *slot;
289 struct hisi_sas_cmd_hdr *cmd_hdr_base;
290 struct asd_sas_port *sas_port = device->port;
291 struct device *dev = hisi_hba->dev;
292 int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx;
296 struct task_status_struct *ts = &task->task_status;
298 ts->resp = SAS_TASK_UNDELIVERED;
299 ts->stat = SAS_PHY_DOWN;
301 * libsas will use dev->port, should
302 * not call task_done for sata
304 if (device->dev_type != SAS_SATA_DEV)
305 task->task_done(task);
309 if (DEV_IS_GONE(sas_dev)) {
311 dev_info(dev, "task prep: device %d not ready\n",
314 dev_info(dev, "task prep: device %016llx not ready\n",
315 SAS_ADDR(device->sas_addr));
320 port = to_hisi_sas_port(sas_port);
321 if (port && !port->port_attached) {
322 dev_info(dev, "task prep: %s port%d not attach device\n",
323 (dev_is_sata(device)) ?
330 if (!sas_protocol_ata(task->task_proto)) {
331 if (task->num_scatter) {
332 n_elem = dma_map_sg(dev, task->scatter,
333 task->num_scatter, task->data_dir);
340 n_elem = task->num_scatter;
342 spin_lock_irqsave(&hisi_hba->lock, flags);
343 if (hisi_hba->hw->slot_index_alloc)
344 rc = hisi_hba->hw->slot_index_alloc(hisi_hba, &slot_idx,
347 rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx);
349 spin_unlock_irqrestore(&hisi_hba->lock, flags);
352 spin_unlock_irqrestore(&hisi_hba->lock, flags);
354 rc = hisi_hba->hw->get_free_slot(hisi_hba, dq);
358 dlvry_queue = dq->id;
359 dlvry_queue_slot = dq->wr_point;
360 slot = &hisi_hba->slot_info[slot_idx];
361 memset(slot, 0, sizeof(struct hisi_sas_slot));
363 slot->idx = slot_idx;
364 slot->n_elem = n_elem;
365 slot->dlvry_queue = dlvry_queue;
366 slot->dlvry_queue_slot = dlvry_queue_slot;
367 cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
368 slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
371 task->lldd_task = slot;
372 INIT_WORK(&slot->abort_slot, hisi_sas_slot_abort);
374 slot->buf = dma_pool_alloc(hisi_hba->buffer_pool,
375 GFP_ATOMIC, &slot->buf_dma);
378 goto err_out_slot_buf;
380 memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
381 memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ);
382 memset(hisi_sas_status_buf_addr_mem(slot), 0, HISI_SAS_STATUS_BUF_SZ);
384 switch (task->task_proto) {
385 case SAS_PROTOCOL_SMP:
386 rc = hisi_sas_task_prep_smp(hisi_hba, slot);
388 case SAS_PROTOCOL_SSP:
389 rc = hisi_sas_task_prep_ssp(hisi_hba, slot, is_tmf, tmf);
391 case SAS_PROTOCOL_SATA:
392 case SAS_PROTOCOL_STP:
393 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
394 rc = hisi_sas_task_prep_ata(hisi_hba, slot);
397 dev_err(dev, "task prep: unknown/unsupported proto (0x%x)\n",
404 dev_err(dev, "task prep: rc = 0x%x\n", rc);
408 list_add_tail(&slot->entry, &sas_dev->list);
409 spin_lock_irqsave(&task->task_state_lock, flags);
410 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
411 spin_unlock_irqrestore(&task->task_state_lock, flags);
413 dq->slot_prep = slot;
415 atomic64_inc(&sas_dev->running_req);
421 dma_pool_free(hisi_hba->buffer_pool, slot->buf,
424 /* Nothing to be done */
426 spin_lock_irqsave(&hisi_hba->lock, flags);
427 hisi_sas_slot_index_free(hisi_hba, slot_idx);
428 spin_unlock_irqrestore(&hisi_hba->lock, flags);
430 dev_err(dev, "task prep: failed[%d]!\n", rc);
431 if (!sas_protocol_ata(task->task_proto))
433 dma_unmap_sg(dev, task->scatter, n_elem,
439 static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags,
440 int is_tmf, struct hisi_sas_tmf_task *tmf)
445 struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev);
446 struct device *dev = hisi_hba->dev;
447 struct domain_device *device = task->dev;
448 struct hisi_sas_device *sas_dev = device->lldd_dev;
449 struct hisi_sas_dq *dq = sas_dev->dq;
451 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags)))
454 /* protect task_prep and start_delivery sequence */
455 spin_lock_irqsave(&dq->lock, flags);
456 rc = hisi_sas_task_prep(task, dq, is_tmf, tmf, &pass);
458 dev_err(dev, "task exec: failed[%d]!\n", rc);
461 hisi_hba->hw->start_delivery(dq);
462 spin_unlock_irqrestore(&dq->lock, flags);
467 static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no)
469 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
470 struct asd_sas_phy *sas_phy = &phy->sas_phy;
471 struct sas_ha_struct *sas_ha;
473 if (!phy->phy_attached)
476 sas_ha = &hisi_hba->sha;
477 sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE);
480 struct sas_phy *sphy = sas_phy->phy;
482 sphy->negotiated_linkrate = sas_phy->linkrate;
483 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
484 sphy->maximum_linkrate_hw =
485 hisi_hba->hw->phy_get_max_linkrate();
486 if (sphy->minimum_linkrate == SAS_LINK_RATE_UNKNOWN)
487 sphy->minimum_linkrate = phy->minimum_linkrate;
489 if (sphy->maximum_linkrate == SAS_LINK_RATE_UNKNOWN)
490 sphy->maximum_linkrate = phy->maximum_linkrate;
493 if (phy->phy_type & PORT_TYPE_SAS) {
494 struct sas_identify_frame *id;
496 id = (struct sas_identify_frame *)phy->frame_rcvd;
497 id->dev_type = phy->identify.device_type;
498 id->initiator_bits = SAS_PROTOCOL_ALL;
499 id->target_bits = phy->identify.target_port_protocols;
500 } else if (phy->phy_type & PORT_TYPE_SATA) {
504 sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
505 sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED);
508 static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device)
510 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
511 struct hisi_sas_device *sas_dev = NULL;
514 spin_lock(&hisi_hba->lock);
515 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
516 if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) {
517 int queue = i % hisi_hba->queue_count;
518 struct hisi_sas_dq *dq = &hisi_hba->dq[queue];
520 hisi_hba->devices[i].device_id = i;
521 sas_dev = &hisi_hba->devices[i];
522 sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
523 sas_dev->dev_type = device->dev_type;
524 sas_dev->hisi_hba = hisi_hba;
525 sas_dev->sas_device = device;
527 INIT_LIST_HEAD(&hisi_hba->devices[i].list);
531 spin_unlock(&hisi_hba->lock);
536 static int hisi_sas_dev_found(struct domain_device *device)
538 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
539 struct domain_device *parent_dev = device->parent;
540 struct hisi_sas_device *sas_dev;
541 struct device *dev = hisi_hba->dev;
543 if (hisi_hba->hw->alloc_dev)
544 sas_dev = hisi_hba->hw->alloc_dev(device);
546 sas_dev = hisi_sas_alloc_dev(device);
548 dev_err(dev, "fail alloc dev: max support %d devices\n",
549 HISI_SAS_MAX_DEVICES);
553 device->lldd_dev = sas_dev;
554 hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
556 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
558 u8 phy_num = parent_dev->ex_dev.num_phys;
561 for (phy_no = 0; phy_no < phy_num; phy_no++) {
562 phy = &parent_dev->ex_dev.ex_phy[phy_no];
563 if (SAS_ADDR(phy->attached_sas_addr) ==
564 SAS_ADDR(device->sas_addr)) {
565 sas_dev->attached_phy = phy_no;
570 if (phy_no == phy_num) {
571 dev_info(dev, "dev found: no attached "
572 "dev:%016llx at ex:%016llx\n",
573 SAS_ADDR(device->sas_addr),
574 SAS_ADDR(parent_dev->sas_addr));
582 static int hisi_sas_slave_configure(struct scsi_device *sdev)
584 struct domain_device *dev = sdev_to_domain_dev(sdev);
585 int ret = sas_slave_configure(sdev);
589 if (!dev_is_sata(dev))
590 sas_change_queue_depth(sdev, 64);
595 static void hisi_sas_scan_start(struct Scsi_Host *shost)
597 struct hisi_hba *hisi_hba = shost_priv(shost);
599 hisi_hba->hw->phys_init(hisi_hba);
602 static int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time)
604 struct hisi_hba *hisi_hba = shost_priv(shost);
605 struct sas_ha_struct *sha = &hisi_hba->sha;
607 /* Wait for PHY up interrupt to occur */
615 static void hisi_sas_phyup_work(struct work_struct *work)
617 struct hisi_sas_phy *phy =
618 container_of(work, struct hisi_sas_phy, phyup_ws);
619 struct hisi_hba *hisi_hba = phy->hisi_hba;
620 struct asd_sas_phy *sas_phy = &phy->sas_phy;
621 int phy_no = sas_phy->id;
623 hisi_hba->hw->sl_notify(hisi_hba, phy_no); /* This requires a sleep */
624 hisi_sas_bytes_dmaed(hisi_hba, phy_no);
627 static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no)
629 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
630 struct asd_sas_phy *sas_phy = &phy->sas_phy;
632 phy->hisi_hba = hisi_hba;
634 init_timer(&phy->timer);
635 sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0;
636 sas_phy->class = SAS;
637 sas_phy->iproto = SAS_PROTOCOL_ALL;
639 sas_phy->type = PHY_TYPE_PHYSICAL;
640 sas_phy->role = PHY_ROLE_INITIATOR;
641 sas_phy->oob_mode = OOB_NOT_CONNECTED;
642 sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
643 sas_phy->id = phy_no;
644 sas_phy->sas_addr = &hisi_hba->sas_addr[0];
645 sas_phy->frame_rcvd = &phy->frame_rcvd[0];
646 sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata;
647 sas_phy->lldd_phy = phy;
649 INIT_WORK(&phy->phyup_ws, hisi_sas_phyup_work);
652 static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy)
654 struct sas_ha_struct *sas_ha = sas_phy->ha;
655 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
656 struct hisi_sas_phy *phy = sas_phy->lldd_phy;
657 struct asd_sas_port *sas_port = sas_phy->port;
658 struct hisi_sas_port *port;
664 port = to_hisi_sas_port(sas_port);
665 spin_lock_irqsave(&hisi_hba->lock, flags);
666 port->port_attached = 1;
667 port->id = phy->port_id;
669 sas_port->lldd_port = port;
670 spin_unlock_irqrestore(&hisi_hba->lock, flags);
673 static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, struct sas_task *task,
674 struct hisi_sas_slot *slot)
678 struct task_status_struct *ts;
680 ts = &task->task_status;
682 ts->resp = SAS_TASK_COMPLETE;
683 ts->stat = SAS_ABORTED_TASK;
684 spin_lock_irqsave(&task->task_state_lock, flags);
685 task->task_state_flags &=
686 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
687 task->task_state_flags |= SAS_TASK_STATE_DONE;
688 spin_unlock_irqrestore(&task->task_state_lock, flags);
691 hisi_sas_slot_task_free(hisi_hba, task, slot);
694 /* hisi_hba.lock should be locked */
695 static void hisi_sas_release_task(struct hisi_hba *hisi_hba,
696 struct domain_device *device)
698 struct hisi_sas_slot *slot, *slot2;
699 struct hisi_sas_device *sas_dev = device->lldd_dev;
701 list_for_each_entry_safe(slot, slot2, &sas_dev->list, entry)
702 hisi_sas_do_release_task(hisi_hba, slot->task, slot);
705 static void hisi_sas_release_tasks(struct hisi_hba *hisi_hba)
707 struct hisi_sas_device *sas_dev;
708 struct domain_device *device;
711 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
712 sas_dev = &hisi_hba->devices[i];
713 device = sas_dev->sas_device;
715 if ((sas_dev->dev_type == SAS_PHY_UNUSED) ||
719 hisi_sas_release_task(hisi_hba, device);
723 static void hisi_sas_dereg_device(struct hisi_hba *hisi_hba,
724 struct domain_device *device)
726 if (hisi_hba->hw->dereg_device)
727 hisi_hba->hw->dereg_device(hisi_hba, device);
730 static void hisi_sas_dev_gone(struct domain_device *device)
732 struct hisi_sas_device *sas_dev = device->lldd_dev;
733 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
734 struct device *dev = hisi_hba->dev;
736 dev_info(dev, "found dev[%d:%x] is gone\n",
737 sas_dev->device_id, sas_dev->dev_type);
739 hisi_sas_internal_task_abort(hisi_hba, device,
740 HISI_SAS_INT_ABT_DEV, 0);
742 hisi_sas_dereg_device(hisi_hba, device);
744 hisi_hba->hw->free_device(hisi_hba, sas_dev);
745 device->lldd_dev = NULL;
746 memset(sas_dev, 0, sizeof(*sas_dev));
747 sas_dev->dev_type = SAS_PHY_UNUSED;
750 static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
752 return hisi_sas_task_exec(task, gfp_flags, 0, NULL);
755 static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
758 struct sas_ha_struct *sas_ha = sas_phy->ha;
759 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
760 int phy_no = sas_phy->id;
763 case PHY_FUNC_HARD_RESET:
764 hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no);
767 case PHY_FUNC_LINK_RESET:
768 hisi_hba->hw->phy_disable(hisi_hba, phy_no);
770 hisi_hba->hw->phy_enable(hisi_hba, phy_no);
773 case PHY_FUNC_DISABLE:
774 hisi_hba->hw->phy_disable(hisi_hba, phy_no);
777 case PHY_FUNC_SET_LINK_RATE:
778 hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, funcdata);
780 case PHY_FUNC_GET_EVENTS:
781 if (hisi_hba->hw->get_events) {
782 hisi_hba->hw->get_events(hisi_hba, phy_no);
786 case PHY_FUNC_RELEASE_SPINUP_HOLD:
793 static void hisi_sas_task_done(struct sas_task *task)
795 if (!del_timer(&task->slow_task->timer))
797 complete(&task->slow_task->completion);
800 static void hisi_sas_tmf_timedout(unsigned long data)
802 struct sas_task *task = (struct sas_task *)data;
805 spin_lock_irqsave(&task->task_state_lock, flags);
806 if (!(task->task_state_flags & SAS_TASK_STATE_DONE))
807 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
808 spin_unlock_irqrestore(&task->task_state_lock, flags);
810 complete(&task->slow_task->completion);
813 #define TASK_TIMEOUT 20
815 static int hisi_sas_exec_internal_tmf_task(struct domain_device *device,
816 void *parameter, u32 para_len,
817 struct hisi_sas_tmf_task *tmf)
819 struct hisi_sas_device *sas_dev = device->lldd_dev;
820 struct hisi_hba *hisi_hba = sas_dev->hisi_hba;
821 struct device *dev = hisi_hba->dev;
822 struct sas_task *task;
825 for (retry = 0; retry < TASK_RETRY; retry++) {
826 task = sas_alloc_slow_task(GFP_KERNEL);
831 task->task_proto = device->tproto;
833 if (dev_is_sata(device)) {
834 task->ata_task.device_control_reg_update = 1;
835 memcpy(&task->ata_task.fis, parameter, para_len);
837 memcpy(&task->ssp_task, parameter, para_len);
839 task->task_done = hisi_sas_task_done;
841 task->slow_task->timer.data = (unsigned long) task;
842 task->slow_task->timer.function = hisi_sas_tmf_timedout;
843 task->slow_task->timer.expires = jiffies + TASK_TIMEOUT*HZ;
844 add_timer(&task->slow_task->timer);
846 res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf);
849 del_timer(&task->slow_task->timer);
850 dev_err(dev, "abort tmf: executing internal task failed: %d\n",
855 wait_for_completion(&task->slow_task->completion);
856 res = TMF_RESP_FUNC_FAILED;
857 /* Even TMF timed out, return direct. */
858 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
859 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
860 struct hisi_sas_slot *slot = task->lldd_task;
862 dev_err(dev, "abort tmf: TMF task timeout\n");
870 if (task->task_status.resp == SAS_TASK_COMPLETE &&
871 task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
872 res = TMF_RESP_FUNC_COMPLETE;
876 if (task->task_status.resp == SAS_TASK_COMPLETE &&
877 task->task_status.stat == TMF_RESP_FUNC_SUCC) {
878 res = TMF_RESP_FUNC_SUCC;
882 if (task->task_status.resp == SAS_TASK_COMPLETE &&
883 task->task_status.stat == SAS_DATA_UNDERRUN) {
884 /* no error, but return the number of bytes of
887 dev_warn(dev, "abort tmf: task to dev %016llx "
888 "resp: 0x%x sts 0x%x underrun\n",
889 SAS_ADDR(device->sas_addr),
890 task->task_status.resp,
891 task->task_status.stat);
892 res = task->task_status.residual;
896 if (task->task_status.resp == SAS_TASK_COMPLETE &&
897 task->task_status.stat == SAS_DATA_OVERRUN) {
898 dev_warn(dev, "abort tmf: blocked task error\n");
903 dev_warn(dev, "abort tmf: task to dev "
904 "%016llx resp: 0x%x status 0x%x\n",
905 SAS_ADDR(device->sas_addr), task->task_status.resp,
906 task->task_status.stat);
911 if (retry == TASK_RETRY)
912 dev_warn(dev, "abort tmf: executing internal task failed!\n");
917 static void hisi_sas_fill_ata_reset_cmd(struct ata_device *dev,
918 bool reset, int pmp, u8 *fis)
920 struct ata_taskfile tf;
922 ata_tf_init(dev, &tf);
927 tf.command = ATA_CMD_DEV_RESET;
928 ata_tf_to_fis(&tf, pmp, 0, fis);
931 static int hisi_sas_softreset_ata_disk(struct domain_device *device)
934 struct ata_port *ap = device->sata_dev.ap;
935 struct ata_link *link;
936 int rc = TMF_RESP_FUNC_FAILED;
937 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
938 struct device *dev = hisi_hba->dev;
939 int s = sizeof(struct host_to_dev_fis);
942 ata_for_each_link(link, ap, EDGE) {
943 int pmp = sata_srst_pmp(link);
945 hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis);
946 rc = hisi_sas_exec_internal_tmf_task(device, fis, s, NULL);
947 if (rc != TMF_RESP_FUNC_COMPLETE)
951 if (rc == TMF_RESP_FUNC_COMPLETE) {
952 ata_for_each_link(link, ap, EDGE) {
953 int pmp = sata_srst_pmp(link);
955 hisi_sas_fill_ata_reset_cmd(link->device, 0, pmp, fis);
956 rc = hisi_sas_exec_internal_tmf_task(device, fis,
958 if (rc != TMF_RESP_FUNC_COMPLETE)
959 dev_err(dev, "ata disk de-reset failed\n");
962 dev_err(dev, "ata disk reset failed\n");
965 if (rc == TMF_RESP_FUNC_COMPLETE) {
966 spin_lock_irqsave(&hisi_hba->lock, flags);
967 hisi_sas_release_task(hisi_hba, device);
968 spin_unlock_irqrestore(&hisi_hba->lock, flags);
974 static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device,
975 u8 *lun, struct hisi_sas_tmf_task *tmf)
977 struct sas_ssp_task ssp_task;
979 if (!(device->tproto & SAS_PROTOCOL_SSP))
980 return TMF_RESP_FUNC_ESUPP;
982 memcpy(ssp_task.LUN, lun, 8);
984 return hisi_sas_exec_internal_tmf_task(device, &ssp_task,
985 sizeof(ssp_task), tmf);
988 static void hisi_sas_refresh_port_id(struct hisi_hba *hisi_hba,
989 struct asd_sas_port *sas_port, enum sas_linkrate linkrate)
991 struct hisi_sas_device *sas_dev;
992 struct domain_device *device;
995 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
996 sas_dev = &hisi_hba->devices[i];
997 device = sas_dev->sas_device;
998 if ((sas_dev->dev_type == SAS_PHY_UNUSED)
999 || !device || (device->port != sas_port))
1002 hisi_hba->hw->free_device(hisi_hba, sas_dev);
1004 /* Update linkrate of directly attached device. */
1005 if (!device->parent)
1006 device->linkrate = linkrate;
1008 hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
1012 static void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 old_state,
1015 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
1016 struct asd_sas_port *_sas_port = NULL;
1019 for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) {
1020 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1021 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1022 struct asd_sas_port *sas_port = sas_phy->port;
1023 struct hisi_sas_port *port = to_hisi_sas_port(sas_port);
1024 bool do_port_check = !!(_sas_port != sas_port);
1026 if (!sas_phy->phy->enabled)
1029 /* Report PHY state change to libsas */
1030 if (state & (1 << phy_no)) {
1031 if (do_port_check && sas_port) {
1032 struct domain_device *dev = sas_port->port_dev;
1034 _sas_port = sas_port;
1035 port->id = phy->port_id;
1036 hisi_sas_refresh_port_id(hisi_hba,
1037 sas_port, sas_phy->linkrate);
1039 if (DEV_IS_EXPANDER(dev->dev_type))
1040 sas_ha->notify_port_event(sas_phy,
1041 PORTE_BROADCAST_RCVD);
1043 } else if (old_state & (1 << phy_no))
1044 /* PHY down but was up before */
1045 hisi_sas_phy_down(hisi_hba, phy_no, 0);
1049 drain_workqueue(hisi_hba->shost->work_q);
1052 static int hisi_sas_controller_reset(struct hisi_hba *hisi_hba)
1054 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
1055 struct device *dev = hisi_hba->dev;
1056 struct Scsi_Host *shost = hisi_hba->shost;
1057 u32 old_state, state;
1058 unsigned long flags;
1061 if (!hisi_hba->hw->soft_reset)
1064 if (test_and_set_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags))
1067 dev_dbg(dev, "controller resetting...\n");
1068 old_state = hisi_hba->hw->get_phys_state(hisi_hba);
1070 scsi_block_requests(shost);
1071 set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1072 rc = hisi_hba->hw->soft_reset(hisi_hba);
1074 dev_warn(dev, "controller reset failed (%d)\n", rc);
1075 clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1078 spin_lock_irqsave(&hisi_hba->lock, flags);
1079 hisi_sas_release_tasks(hisi_hba);
1080 spin_unlock_irqrestore(&hisi_hba->lock, flags);
1082 sas_ha->notify_ha_event(sas_ha, HAE_RESET);
1083 clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1085 /* Init and wait for PHYs to come up and all libsas event finished. */
1086 hisi_hba->hw->phys_init(hisi_hba);
1088 drain_workqueue(hisi_hba->wq);
1089 drain_workqueue(shost->work_q);
1091 state = hisi_hba->hw->get_phys_state(hisi_hba);
1092 hisi_sas_rescan_topology(hisi_hba, old_state, state);
1093 dev_dbg(dev, "controller reset complete\n");
1096 scsi_unblock_requests(shost);
1097 clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags);
1102 static int hisi_sas_abort_task(struct sas_task *task)
1104 struct scsi_lun lun;
1105 struct hisi_sas_tmf_task tmf_task;
1106 struct domain_device *device = task->dev;
1107 struct hisi_sas_device *sas_dev = device->lldd_dev;
1108 struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev);
1109 struct device *dev = hisi_hba->dev;
1110 int rc = TMF_RESP_FUNC_FAILED;
1111 unsigned long flags;
1114 dev_warn(dev, "Device has been removed\n");
1115 return TMF_RESP_FUNC_FAILED;
1118 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1119 rc = TMF_RESP_FUNC_COMPLETE;
1123 sas_dev->dev_status = HISI_SAS_DEV_EH;
1124 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1125 struct scsi_cmnd *cmnd = task->uldd_task;
1126 struct hisi_sas_slot *slot = task->lldd_task;
1127 u32 tag = slot->idx;
1130 int_to_scsilun(cmnd->device->lun, &lun);
1131 tmf_task.tmf = TMF_ABORT_TASK;
1132 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1134 rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun,
1137 rc2 = hisi_sas_internal_task_abort(hisi_hba, device,
1138 HISI_SAS_INT_ABT_CMD, tag);
1140 * If the TMF finds that the IO is not in the device and also
1141 * the internal abort does not succeed, then it is safe to
1143 * Note: if the internal abort succeeds then the slot
1144 * will have already been completed
1146 if (rc == TMF_RESP_FUNC_COMPLETE && rc2 != TMF_RESP_FUNC_SUCC) {
1147 if (task->lldd_task) {
1148 spin_lock_irqsave(&hisi_hba->lock, flags);
1149 hisi_sas_do_release_task(hisi_hba, task, slot);
1150 spin_unlock_irqrestore(&hisi_hba->lock, flags);
1153 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1154 task->task_proto & SAS_PROTOCOL_STP) {
1155 if (task->dev->dev_type == SAS_SATA_DEV) {
1156 hisi_sas_internal_task_abort(hisi_hba, device,
1157 HISI_SAS_INT_ABT_DEV, 0);
1158 hisi_sas_dereg_device(hisi_hba, device);
1159 rc = hisi_sas_softreset_ata_disk(device);
1161 } else if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SMP) {
1163 struct hisi_sas_slot *slot = task->lldd_task;
1164 u32 tag = slot->idx;
1166 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1167 HISI_SAS_INT_ABT_CMD, tag);
1168 if (rc == TMF_RESP_FUNC_FAILED) {
1169 spin_lock_irqsave(&hisi_hba->lock, flags);
1170 hisi_sas_do_release_task(hisi_hba, task, slot);
1171 spin_unlock_irqrestore(&hisi_hba->lock, flags);
1176 if (rc != TMF_RESP_FUNC_COMPLETE)
1177 dev_notice(dev, "abort task: rc=%d\n", rc);
1181 static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun)
1183 struct hisi_sas_tmf_task tmf_task;
1184 int rc = TMF_RESP_FUNC_FAILED;
1186 tmf_task.tmf = TMF_ABORT_TASK_SET;
1187 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1192 static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun)
1194 int rc = TMF_RESP_FUNC_FAILED;
1195 struct hisi_sas_tmf_task tmf_task;
1197 tmf_task.tmf = TMF_CLEAR_ACA;
1198 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1203 static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device)
1205 struct sas_phy *phy = sas_get_local_phy(device);
1206 int rc, reset_type = (device->dev_type == SAS_SATA_DEV ||
1207 (device->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
1208 rc = sas_phy_reset(phy, reset_type);
1209 sas_put_local_phy(phy);
1214 static int hisi_sas_I_T_nexus_reset(struct domain_device *device)
1216 struct hisi_sas_device *sas_dev = device->lldd_dev;
1217 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1218 unsigned long flags;
1219 int rc = TMF_RESP_FUNC_FAILED;
1221 if (sas_dev->dev_status != HISI_SAS_DEV_EH)
1222 return TMF_RESP_FUNC_FAILED;
1223 sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
1225 hisi_sas_internal_task_abort(hisi_hba, device,
1226 HISI_SAS_INT_ABT_DEV, 0);
1227 hisi_sas_dereg_device(hisi_hba, device);
1229 rc = hisi_sas_debug_I_T_nexus_reset(device);
1231 if (rc == TMF_RESP_FUNC_COMPLETE) {
1232 spin_lock_irqsave(&hisi_hba->lock, flags);
1233 hisi_sas_release_task(hisi_hba, device);
1234 spin_unlock_irqrestore(&hisi_hba->lock, flags);
1239 static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun)
1241 struct hisi_sas_device *sas_dev = device->lldd_dev;
1242 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1243 struct device *dev = hisi_hba->dev;
1244 unsigned long flags;
1245 int rc = TMF_RESP_FUNC_FAILED;
1247 sas_dev->dev_status = HISI_SAS_DEV_EH;
1248 if (dev_is_sata(device)) {
1249 struct sas_phy *phy;
1251 /* Clear internal IO and then hardreset */
1252 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1253 HISI_SAS_INT_ABT_DEV, 0);
1254 if (rc == TMF_RESP_FUNC_FAILED)
1256 hisi_sas_dereg_device(hisi_hba, device);
1258 phy = sas_get_local_phy(device);
1260 rc = sas_phy_reset(phy, 1);
1263 spin_lock_irqsave(&hisi_hba->lock, flags);
1264 hisi_sas_release_task(hisi_hba, device);
1265 spin_unlock_irqrestore(&hisi_hba->lock, flags);
1267 sas_put_local_phy(phy);
1269 struct hisi_sas_tmf_task tmf_task = { .tmf = TMF_LU_RESET };
1271 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1272 if (rc == TMF_RESP_FUNC_COMPLETE) {
1273 spin_lock_irqsave(&hisi_hba->lock, flags);
1274 hisi_sas_release_task(hisi_hba, device);
1275 spin_unlock_irqrestore(&hisi_hba->lock, flags);
1279 if (rc != TMF_RESP_FUNC_COMPLETE)
1280 dev_err(dev, "lu_reset: for device[%d]:rc= %d\n",
1281 sas_dev->device_id, rc);
1285 static int hisi_sas_clear_nexus_ha(struct sas_ha_struct *sas_ha)
1287 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
1289 return hisi_sas_controller_reset(hisi_hba);
1292 static int hisi_sas_query_task(struct sas_task *task)
1294 struct scsi_lun lun;
1295 struct hisi_sas_tmf_task tmf_task;
1296 int rc = TMF_RESP_FUNC_FAILED;
1298 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1299 struct scsi_cmnd *cmnd = task->uldd_task;
1300 struct domain_device *device = task->dev;
1301 struct hisi_sas_slot *slot = task->lldd_task;
1302 u32 tag = slot->idx;
1304 int_to_scsilun(cmnd->device->lun, &lun);
1305 tmf_task.tmf = TMF_QUERY_TASK;
1306 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1308 rc = hisi_sas_debug_issue_ssp_tmf(device,
1312 /* The task is still in Lun, release it then */
1313 case TMF_RESP_FUNC_SUCC:
1314 /* The task is not in Lun or failed, reset the phy */
1315 case TMF_RESP_FUNC_FAILED:
1316 case TMF_RESP_FUNC_COMPLETE:
1319 rc = TMF_RESP_FUNC_FAILED;
1327 hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id,
1328 struct sas_task *task, int abort_flag,
1331 struct domain_device *device = task->dev;
1332 struct hisi_sas_device *sas_dev = device->lldd_dev;
1333 struct device *dev = hisi_hba->dev;
1334 struct hisi_sas_port *port;
1335 struct hisi_sas_slot *slot;
1336 struct asd_sas_port *sas_port = device->port;
1337 struct hisi_sas_cmd_hdr *cmd_hdr_base;
1338 struct hisi_sas_dq *dq = sas_dev->dq;
1339 int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx;
1340 unsigned long flags, flags_dq;
1342 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags)))
1348 port = to_hisi_sas_port(sas_port);
1350 /* simply get a slot and send abort command */
1351 spin_lock_irqsave(&hisi_hba->lock, flags);
1352 rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx);
1354 spin_unlock_irqrestore(&hisi_hba->lock, flags);
1357 spin_unlock_irqrestore(&hisi_hba->lock, flags);
1359 spin_lock_irqsave(&dq->lock, flags_dq);
1360 rc = hisi_hba->hw->get_free_slot(hisi_hba, dq);
1364 dlvry_queue = dq->id;
1365 dlvry_queue_slot = dq->wr_point;
1367 slot = &hisi_hba->slot_info[slot_idx];
1368 memset(slot, 0, sizeof(struct hisi_sas_slot));
1370 slot->idx = slot_idx;
1371 slot->n_elem = n_elem;
1372 slot->dlvry_queue = dlvry_queue;
1373 slot->dlvry_queue_slot = dlvry_queue_slot;
1374 cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
1375 slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
1378 task->lldd_task = slot;
1380 slot->buf = dma_pool_alloc(hisi_hba->buffer_pool,
1381 GFP_ATOMIC, &slot->buf_dma);
1387 memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
1388 memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ);
1389 memset(hisi_sas_status_buf_addr_mem(slot), 0, HISI_SAS_STATUS_BUF_SZ);
1391 rc = hisi_sas_task_prep_abort(hisi_hba, slot, device_id,
1392 abort_flag, task_tag);
1397 list_add_tail(&slot->entry, &sas_dev->list);
1398 spin_lock_irqsave(&task->task_state_lock, flags);
1399 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
1400 spin_unlock_irqrestore(&task->task_state_lock, flags);
1402 dq->slot_prep = slot;
1404 atomic64_inc(&sas_dev->running_req);
1406 /* send abort command to the chip */
1407 hisi_hba->hw->start_delivery(dq);
1408 spin_unlock_irqrestore(&dq->lock, flags_dq);
1413 dma_pool_free(hisi_hba->buffer_pool, slot->buf,
1416 spin_lock_irqsave(&hisi_hba->lock, flags);
1417 hisi_sas_slot_index_free(hisi_hba, slot_idx);
1418 spin_unlock_irqrestore(&hisi_hba->lock, flags);
1419 spin_unlock_irqrestore(&dq->lock, flags_dq);
1421 dev_err(dev, "internal abort task prep: failed[%d]!\n", rc);
1427 * hisi_sas_internal_task_abort -- execute an internal
1428 * abort command for single IO command or a device
1429 * @hisi_hba: host controller struct
1430 * @device: domain device
1431 * @abort_flag: mode of operation, device or single IO
1432 * @tag: tag of IO to be aborted (only relevant to single
1436 hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
1437 struct domain_device *device,
1438 int abort_flag, int tag)
1440 struct sas_task *task;
1441 struct hisi_sas_device *sas_dev = device->lldd_dev;
1442 struct device *dev = hisi_hba->dev;
1445 if (!hisi_hba->hw->prep_abort)
1448 task = sas_alloc_slow_task(GFP_KERNEL);
1453 task->task_proto = device->tproto;
1454 task->task_done = hisi_sas_task_done;
1455 task->slow_task->timer.data = (unsigned long)task;
1456 task->slow_task->timer.function = hisi_sas_tmf_timedout;
1457 task->slow_task->timer.expires = jiffies + msecs_to_jiffies(110);
1458 add_timer(&task->slow_task->timer);
1460 res = hisi_sas_internal_abort_task_exec(hisi_hba, sas_dev->device_id,
1461 task, abort_flag, tag);
1463 del_timer(&task->slow_task->timer);
1464 dev_err(dev, "internal task abort: executing internal task failed: %d\n",
1468 wait_for_completion(&task->slow_task->completion);
1469 res = TMF_RESP_FUNC_FAILED;
1471 /* Internal abort timed out */
1472 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1473 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1474 struct hisi_sas_slot *slot = task->lldd_task;
1478 dev_err(dev, "internal task abort: timeout.\n");
1482 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1483 task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
1484 res = TMF_RESP_FUNC_COMPLETE;
1488 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1489 task->task_status.stat == TMF_RESP_FUNC_SUCC) {
1490 res = TMF_RESP_FUNC_SUCC;
1495 dev_dbg(dev, "internal task abort: task to dev %016llx task=%p "
1496 "resp: 0x%x sts 0x%x\n",
1497 SAS_ADDR(device->sas_addr),
1499 task->task_status.resp, /* 0 is complete, -1 is undelivered */
1500 task->task_status.stat);
1501 sas_free_task(task);
1506 static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy)
1508 hisi_sas_port_notify_formed(sas_phy);
1511 static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy)
1513 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1514 struct sas_phy *sphy = sas_phy->phy;
1515 struct sas_phy_data *d = sphy->hostdata;
1517 phy->phy_attached = 0;
1522 sphy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
1524 sphy->negotiated_linkrate = SAS_PHY_DISABLED;
1527 void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy)
1529 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1530 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1531 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
1534 /* Phy down but ready */
1535 hisi_sas_bytes_dmaed(hisi_hba, phy_no);
1536 hisi_sas_port_notify_formed(sas_phy);
1538 struct hisi_sas_port *port = phy->port;
1540 /* Phy down and not ready */
1541 sas_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL);
1542 sas_phy_disconnected(sas_phy);
1545 if (phy->phy_type & PORT_TYPE_SAS) {
1546 int port_id = port->id;
1548 if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba,
1550 port->port_attached = 0;
1551 } else if (phy->phy_type & PORT_TYPE_SATA)
1552 port->port_attached = 0;
1554 hisi_sas_phy_disconnected(phy);
1557 EXPORT_SYMBOL_GPL(hisi_sas_phy_down);
1560 struct scsi_transport_template *hisi_sas_stt;
1561 EXPORT_SYMBOL_GPL(hisi_sas_stt);
1563 static struct scsi_host_template _hisi_sas_sht = {
1564 .module = THIS_MODULE,
1566 .queuecommand = sas_queuecommand,
1567 .target_alloc = sas_target_alloc,
1568 .slave_configure = hisi_sas_slave_configure,
1569 .scan_finished = hisi_sas_scan_finished,
1570 .scan_start = hisi_sas_scan_start,
1571 .change_queue_depth = sas_change_queue_depth,
1572 .bios_param = sas_bios_param,
1575 .sg_tablesize = SG_ALL,
1576 .max_sectors = SCSI_DEFAULT_MAX_SECTORS,
1577 .use_clustering = ENABLE_CLUSTERING,
1578 .eh_device_reset_handler = sas_eh_device_reset_handler,
1579 .eh_target_reset_handler = sas_eh_target_reset_handler,
1580 .target_destroy = sas_target_destroy,
1583 struct scsi_host_template *hisi_sas_sht = &_hisi_sas_sht;
1584 EXPORT_SYMBOL_GPL(hisi_sas_sht);
1586 static struct sas_domain_function_template hisi_sas_transport_ops = {
1587 .lldd_dev_found = hisi_sas_dev_found,
1588 .lldd_dev_gone = hisi_sas_dev_gone,
1589 .lldd_execute_task = hisi_sas_queue_command,
1590 .lldd_control_phy = hisi_sas_control_phy,
1591 .lldd_abort_task = hisi_sas_abort_task,
1592 .lldd_abort_task_set = hisi_sas_abort_task_set,
1593 .lldd_clear_aca = hisi_sas_clear_aca,
1594 .lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset,
1595 .lldd_lu_reset = hisi_sas_lu_reset,
1596 .lldd_query_task = hisi_sas_query_task,
1597 .lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha,
1598 .lldd_port_formed = hisi_sas_port_formed,
1601 void hisi_sas_init_mem(struct hisi_hba *hisi_hba)
1603 int i, s, max_command_entries = hisi_hba->hw->max_command_entries;
1605 for (i = 0; i < hisi_hba->queue_count; i++) {
1606 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
1607 struct hisi_sas_dq *dq = &hisi_hba->dq[i];
1609 s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
1610 memset(hisi_hba->cmd_hdr[i], 0, s);
1613 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
1614 memset(hisi_hba->complete_hdr[i], 0, s);
1618 s = sizeof(struct hisi_sas_initial_fis) * hisi_hba->n_phy;
1619 memset(hisi_hba->initial_fis, 0, s);
1621 s = max_command_entries * sizeof(struct hisi_sas_iost);
1622 memset(hisi_hba->iost, 0, s);
1624 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
1625 memset(hisi_hba->breakpoint, 0, s);
1627 s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2;
1628 memset(hisi_hba->sata_breakpoint, 0, s);
1630 EXPORT_SYMBOL_GPL(hisi_sas_init_mem);
1632 int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost)
1634 struct device *dev = hisi_hba->dev;
1635 int i, s, max_command_entries = hisi_hba->hw->max_command_entries;
1637 spin_lock_init(&hisi_hba->lock);
1638 for (i = 0; i < hisi_hba->n_phy; i++) {
1639 hisi_sas_phy_init(hisi_hba, i);
1640 hisi_hba->port[i].port_attached = 0;
1641 hisi_hba->port[i].id = -1;
1644 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1645 hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED;
1646 hisi_hba->devices[i].device_id = i;
1647 hisi_hba->devices[i].dev_status = HISI_SAS_DEV_NORMAL;
1650 for (i = 0; i < hisi_hba->queue_count; i++) {
1651 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
1652 struct hisi_sas_dq *dq = &hisi_hba->dq[i];
1654 /* Completion queue structure */
1656 cq->hisi_hba = hisi_hba;
1658 /* Delivery queue structure */
1660 dq->hisi_hba = hisi_hba;
1662 /* Delivery queue */
1663 s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
1664 hisi_hba->cmd_hdr[i] = dma_alloc_coherent(dev, s,
1665 &hisi_hba->cmd_hdr_dma[i], GFP_KERNEL);
1666 if (!hisi_hba->cmd_hdr[i])
1669 /* Completion queue */
1670 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
1671 hisi_hba->complete_hdr[i] = dma_alloc_coherent(dev, s,
1672 &hisi_hba->complete_hdr_dma[i], GFP_KERNEL);
1673 if (!hisi_hba->complete_hdr[i])
1677 s = sizeof(struct hisi_sas_slot_buf_table);
1678 hisi_hba->buffer_pool = dma_pool_create("dma_buffer", dev, s, 16, 0);
1679 if (!hisi_hba->buffer_pool)
1682 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
1683 hisi_hba->itct = dma_alloc_coherent(dev, s, &hisi_hba->itct_dma,
1685 if (!hisi_hba->itct)
1688 memset(hisi_hba->itct, 0, s);
1690 hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries,
1691 sizeof(struct hisi_sas_slot),
1693 if (!hisi_hba->slot_info)
1696 s = max_command_entries * sizeof(struct hisi_sas_iost);
1697 hisi_hba->iost = dma_alloc_coherent(dev, s, &hisi_hba->iost_dma,
1699 if (!hisi_hba->iost)
1702 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
1703 hisi_hba->breakpoint = dma_alloc_coherent(dev, s,
1704 &hisi_hba->breakpoint_dma, GFP_KERNEL);
1705 if (!hisi_hba->breakpoint)
1708 hisi_hba->slot_index_count = max_command_entries;
1709 s = hisi_hba->slot_index_count / BITS_PER_BYTE;
1710 hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL);
1711 if (!hisi_hba->slot_index_tags)
1714 s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
1715 hisi_hba->initial_fis = dma_alloc_coherent(dev, s,
1716 &hisi_hba->initial_fis_dma, GFP_KERNEL);
1717 if (!hisi_hba->initial_fis)
1720 s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2;
1721 hisi_hba->sata_breakpoint = dma_alloc_coherent(dev, s,
1722 &hisi_hba->sata_breakpoint_dma, GFP_KERNEL);
1723 if (!hisi_hba->sata_breakpoint)
1725 hisi_sas_init_mem(hisi_hba);
1727 hisi_sas_slot_index_init(hisi_hba);
1729 hisi_hba->wq = create_singlethread_workqueue(dev_name(dev));
1730 if (!hisi_hba->wq) {
1731 dev_err(dev, "sas_alloc: failed to create workqueue\n");
1739 EXPORT_SYMBOL_GPL(hisi_sas_alloc);
1741 void hisi_sas_free(struct hisi_hba *hisi_hba)
1743 struct device *dev = hisi_hba->dev;
1744 int i, s, max_command_entries = hisi_hba->hw->max_command_entries;
1746 for (i = 0; i < hisi_hba->queue_count; i++) {
1747 s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
1748 if (hisi_hba->cmd_hdr[i])
1749 dma_free_coherent(dev, s,
1750 hisi_hba->cmd_hdr[i],
1751 hisi_hba->cmd_hdr_dma[i]);
1753 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
1754 if (hisi_hba->complete_hdr[i])
1755 dma_free_coherent(dev, s,
1756 hisi_hba->complete_hdr[i],
1757 hisi_hba->complete_hdr_dma[i]);
1760 dma_pool_destroy(hisi_hba->buffer_pool);
1762 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
1764 dma_free_coherent(dev, s,
1765 hisi_hba->itct, hisi_hba->itct_dma);
1767 s = max_command_entries * sizeof(struct hisi_sas_iost);
1769 dma_free_coherent(dev, s,
1770 hisi_hba->iost, hisi_hba->iost_dma);
1772 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
1773 if (hisi_hba->breakpoint)
1774 dma_free_coherent(dev, s,
1775 hisi_hba->breakpoint,
1776 hisi_hba->breakpoint_dma);
1779 s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
1780 if (hisi_hba->initial_fis)
1781 dma_free_coherent(dev, s,
1782 hisi_hba->initial_fis,
1783 hisi_hba->initial_fis_dma);
1785 s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2;
1786 if (hisi_hba->sata_breakpoint)
1787 dma_free_coherent(dev, s,
1788 hisi_hba->sata_breakpoint,
1789 hisi_hba->sata_breakpoint_dma);
1792 destroy_workqueue(hisi_hba->wq);
1794 EXPORT_SYMBOL_GPL(hisi_sas_free);
1796 static void hisi_sas_rst_work_handler(struct work_struct *work)
1798 struct hisi_hba *hisi_hba =
1799 container_of(work, struct hisi_hba, rst_work);
1801 hisi_sas_controller_reset(hisi_hba);
1804 int hisi_sas_get_fw_info(struct hisi_hba *hisi_hba)
1806 struct device *dev = hisi_hba->dev;
1807 struct platform_device *pdev = hisi_hba->platform_dev;
1808 struct device_node *np = pdev ? pdev->dev.of_node : NULL;
1811 if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr,
1813 dev_err(dev, "could not get property sas-addr\n");
1819 * These properties are only required for platform device-based
1820 * controller with DT firmware.
1822 hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np,
1823 "hisilicon,sas-syscon");
1824 if (IS_ERR(hisi_hba->ctrl)) {
1825 dev_err(dev, "could not get syscon\n");
1829 if (device_property_read_u32(dev, "ctrl-reset-reg",
1830 &hisi_hba->ctrl_reset_reg)) {
1832 "could not get property ctrl-reset-reg\n");
1836 if (device_property_read_u32(dev, "ctrl-reset-sts-reg",
1837 &hisi_hba->ctrl_reset_sts_reg)) {
1839 "could not get property ctrl-reset-sts-reg\n");
1843 if (device_property_read_u32(dev, "ctrl-clock-ena-reg",
1844 &hisi_hba->ctrl_clock_ena_reg)) {
1846 "could not get property ctrl-clock-ena-reg\n");
1851 refclk = devm_clk_get(dev, NULL);
1853 dev_dbg(dev, "no ref clk property\n");
1855 hisi_hba->refclk_frequency_mhz = clk_get_rate(refclk) / 1000000;
1857 if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy)) {
1858 dev_err(dev, "could not get property phy-count\n");
1862 if (device_property_read_u32(dev, "queue-count",
1863 &hisi_hba->queue_count)) {
1864 dev_err(dev, "could not get property queue-count\n");
1870 EXPORT_SYMBOL_GPL(hisi_sas_get_fw_info);
1872 static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
1873 const struct hisi_sas_hw *hw)
1875 struct resource *res;
1876 struct Scsi_Host *shost;
1877 struct hisi_hba *hisi_hba;
1878 struct device *dev = &pdev->dev;
1880 shost = scsi_host_alloc(hisi_sas_sht, sizeof(*hisi_hba));
1882 dev_err(dev, "scsi host alloc failed\n");
1885 hisi_hba = shost_priv(shost);
1887 INIT_WORK(&hisi_hba->rst_work, hisi_sas_rst_work_handler);
1889 hisi_hba->dev = dev;
1890 hisi_hba->platform_dev = pdev;
1891 hisi_hba->shost = shost;
1892 SHOST_TO_SAS_HA(shost) = &hisi_hba->sha;
1894 init_timer(&hisi_hba->timer);
1896 if (hisi_sas_get_fw_info(hisi_hba) < 0)
1899 if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) &&
1900 dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) {
1901 dev_err(dev, "No usable DMA addressing method\n");
1905 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1906 hisi_hba->regs = devm_ioremap_resource(dev, res);
1907 if (IS_ERR(hisi_hba->regs))
1910 if (hisi_sas_alloc(hisi_hba, shost)) {
1911 hisi_sas_free(hisi_hba);
1917 scsi_host_put(shost);
1918 dev_err(dev, "shost alloc failed\n");
1922 void hisi_sas_init_add(struct hisi_hba *hisi_hba)
1926 for (i = 0; i < hisi_hba->n_phy; i++)
1927 memcpy(&hisi_hba->phy[i].dev_sas_addr,
1931 EXPORT_SYMBOL_GPL(hisi_sas_init_add);
1933 int hisi_sas_probe(struct platform_device *pdev,
1934 const struct hisi_sas_hw *hw)
1936 struct Scsi_Host *shost;
1937 struct hisi_hba *hisi_hba;
1938 struct device *dev = &pdev->dev;
1939 struct asd_sas_phy **arr_phy;
1940 struct asd_sas_port **arr_port;
1941 struct sas_ha_struct *sha;
1942 int rc, phy_nr, port_nr, i;
1944 shost = hisi_sas_shost_alloc(pdev, hw);
1948 sha = SHOST_TO_SAS_HA(shost);
1949 hisi_hba = shost_priv(shost);
1950 platform_set_drvdata(pdev, sha);
1952 phy_nr = port_nr = hisi_hba->n_phy;
1954 arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL);
1955 arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL);
1956 if (!arr_phy || !arr_port) {
1961 sha->sas_phy = arr_phy;
1962 sha->sas_port = arr_port;
1963 sha->lldd_ha = hisi_hba;
1965 shost->transportt = hisi_sas_stt;
1966 shost->max_id = HISI_SAS_MAX_DEVICES;
1967 shost->max_lun = ~0;
1968 shost->max_channel = 1;
1969 shost->max_cmd_len = 16;
1970 shost->sg_tablesize = min_t(u16, SG_ALL, HISI_SAS_SGE_PAGE_CNT);
1971 shost->can_queue = hisi_hba->hw->max_command_entries;
1972 shost->cmd_per_lun = hisi_hba->hw->max_command_entries;
1974 sha->sas_ha_name = DRV_NAME;
1975 sha->dev = hisi_hba->dev;
1976 sha->lldd_module = THIS_MODULE;
1977 sha->sas_addr = &hisi_hba->sas_addr[0];
1978 sha->num_phys = hisi_hba->n_phy;
1979 sha->core.shost = hisi_hba->shost;
1981 for (i = 0; i < hisi_hba->n_phy; i++) {
1982 sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy;
1983 sha->sas_port[i] = &hisi_hba->port[i].sas_port;
1986 hisi_sas_init_add(hisi_hba);
1988 rc = scsi_add_host(shost, &pdev->dev);
1992 rc = sas_register_ha(sha);
1994 goto err_out_register_ha;
1996 rc = hisi_hba->hw->hw_init(hisi_hba);
1998 goto err_out_register_ha;
2000 scsi_scan_host(shost);
2004 err_out_register_ha:
2005 scsi_remove_host(shost);
2007 hisi_sas_free(hisi_hba);
2008 scsi_host_put(shost);
2011 EXPORT_SYMBOL_GPL(hisi_sas_probe);
2013 int hisi_sas_remove(struct platform_device *pdev)
2015 struct sas_ha_struct *sha = platform_get_drvdata(pdev);
2016 struct hisi_hba *hisi_hba = sha->lldd_ha;
2017 struct Scsi_Host *shost = sha->core.shost;
2019 sas_unregister_ha(sha);
2020 sas_remove_host(sha->core.shost);
2022 hisi_sas_free(hisi_hba);
2023 scsi_host_put(shost);
2026 EXPORT_SYMBOL_GPL(hisi_sas_remove);
2028 static __init int hisi_sas_init(void)
2030 hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops);
2037 static __exit void hisi_sas_exit(void)
2039 sas_release_transport(hisi_sas_stt);
2042 module_init(hisi_sas_init);
2043 module_exit(hisi_sas_exit);
2045 MODULE_LICENSE("GPL");
2046 MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
2047 MODULE_DESCRIPTION("HISILICON SAS controller driver");
2048 MODULE_ALIAS("platform:" DRV_NAME);