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 #define DRV_NAME "hisi_sas"
15 #define DEV_IS_GONE(dev) \
16 ((!dev) || (dev->dev_type == SAS_PHY_UNUSED))
18 static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device,
19 u8 *lun, struct hisi_sas_tmf_task *tmf);
21 hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
22 struct domain_device *device,
23 int abort_flag, int tag);
24 static int hisi_sas_softreset_ata_disk(struct domain_device *device);
25 static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
27 static void hisi_sas_release_task(struct hisi_hba *hisi_hba,
28 struct domain_device *device);
29 static void hisi_sas_dev_gone(struct domain_device *device);
31 u8 hisi_sas_get_ata_protocol(struct host_to_dev_fis *fis, int direction)
33 switch (fis->command) {
34 case ATA_CMD_FPDMA_WRITE:
35 case ATA_CMD_FPDMA_READ:
36 case ATA_CMD_FPDMA_RECV:
37 case ATA_CMD_FPDMA_SEND:
38 case ATA_CMD_NCQ_NON_DATA:
39 return HISI_SAS_SATA_PROTOCOL_FPDMA;
41 case ATA_CMD_DOWNLOAD_MICRO:
43 case ATA_CMD_PMP_READ:
44 case ATA_CMD_READ_LOG_EXT:
45 case ATA_CMD_PIO_READ:
46 case ATA_CMD_PIO_READ_EXT:
47 case ATA_CMD_PMP_WRITE:
48 case ATA_CMD_WRITE_LOG_EXT:
49 case ATA_CMD_PIO_WRITE:
50 case ATA_CMD_PIO_WRITE_EXT:
51 return HISI_SAS_SATA_PROTOCOL_PIO;
54 case ATA_CMD_DOWNLOAD_MICRO_DMA:
55 case ATA_CMD_PMP_READ_DMA:
56 case ATA_CMD_PMP_WRITE_DMA:
58 case ATA_CMD_READ_EXT:
59 case ATA_CMD_READ_LOG_DMA_EXT:
60 case ATA_CMD_READ_STREAM_DMA_EXT:
61 case ATA_CMD_TRUSTED_RCV_DMA:
62 case ATA_CMD_TRUSTED_SND_DMA:
64 case ATA_CMD_WRITE_EXT:
65 case ATA_CMD_WRITE_FUA_EXT:
66 case ATA_CMD_WRITE_QUEUED:
67 case ATA_CMD_WRITE_LOG_DMA_EXT:
68 case ATA_CMD_WRITE_STREAM_DMA_EXT:
69 case ATA_CMD_ZAC_MGMT_IN:
70 return HISI_SAS_SATA_PROTOCOL_DMA;
72 case ATA_CMD_CHK_POWER:
73 case ATA_CMD_DEV_RESET:
76 case ATA_CMD_FLUSH_EXT:
78 case ATA_CMD_VERIFY_EXT:
79 case ATA_CMD_SET_FEATURES:
81 case ATA_CMD_STANDBYNOW1:
82 case ATA_CMD_ZAC_MGMT_OUT:
83 return HISI_SAS_SATA_PROTOCOL_NONDATA;
86 switch (fis->features) {
87 case ATA_SET_MAX_PASSWD:
88 case ATA_SET_MAX_LOCK:
89 return HISI_SAS_SATA_PROTOCOL_PIO;
91 case ATA_SET_MAX_PASSWD_DMA:
92 case ATA_SET_MAX_UNLOCK_DMA:
93 return HISI_SAS_SATA_PROTOCOL_DMA;
96 return HISI_SAS_SATA_PROTOCOL_NONDATA;
101 if (direction == DMA_NONE)
102 return HISI_SAS_SATA_PROTOCOL_NONDATA;
103 return HISI_SAS_SATA_PROTOCOL_PIO;
107 EXPORT_SYMBOL_GPL(hisi_sas_get_ata_protocol);
109 void hisi_sas_sata_done(struct sas_task *task,
110 struct hisi_sas_slot *slot)
112 struct task_status_struct *ts = &task->task_status;
113 struct ata_task_resp *resp = (struct ata_task_resp *)ts->buf;
114 struct hisi_sas_status_buffer *status_buf =
115 hisi_sas_status_buf_addr_mem(slot);
116 u8 *iu = &status_buf->iu[0];
117 struct dev_to_host_fis *d2h = (struct dev_to_host_fis *)iu;
119 resp->frame_len = sizeof(struct dev_to_host_fis);
120 memcpy(&resp->ending_fis[0], d2h, sizeof(struct dev_to_host_fis));
122 ts->buf_valid_size = sizeof(*resp);
124 EXPORT_SYMBOL_GPL(hisi_sas_sata_done);
126 int hisi_sas_get_ncq_tag(struct sas_task *task, u32 *tag)
128 struct ata_queued_cmd *qc = task->uldd_task;
131 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
132 qc->tf.command == ATA_CMD_FPDMA_READ) {
139 EXPORT_SYMBOL_GPL(hisi_sas_get_ncq_tag);
142 * This function assumes linkrate mask fits in 8 bits, which it
143 * does for all HW versions supported.
145 u8 hisi_sas_get_prog_phy_linkrate_mask(enum sas_linkrate max)
150 max -= SAS_LINK_RATE_1_5_GBPS;
151 for (i = 0; i <= max; i++)
152 rate |= 1 << (i * 2);
155 EXPORT_SYMBOL_GPL(hisi_sas_get_prog_phy_linkrate_mask);
157 static struct hisi_hba *dev_to_hisi_hba(struct domain_device *device)
159 return device->port->ha->lldd_ha;
162 struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port)
164 return container_of(sas_port, struct hisi_sas_port, sas_port);
166 EXPORT_SYMBOL_GPL(to_hisi_sas_port);
168 void hisi_sas_stop_phys(struct hisi_hba *hisi_hba)
172 for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++)
173 hisi_hba->hw->phy_disable(hisi_hba, phy_no);
175 EXPORT_SYMBOL_GPL(hisi_sas_stop_phys);
177 static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx)
179 void *bitmap = hisi_hba->slot_index_tags;
181 clear_bit(slot_idx, bitmap);
184 static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx)
188 if (hisi_hba->hw->slot_index_alloc || (slot_idx >=
189 hisi_hba->hw->max_command_entries - HISI_SAS_RESERVED_IPTT_CNT)) {
190 spin_lock_irqsave(&hisi_hba->lock, flags);
191 hisi_sas_slot_index_clear(hisi_hba, slot_idx);
192 spin_unlock_irqrestore(&hisi_hba->lock, flags);
196 static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx)
198 void *bitmap = hisi_hba->slot_index_tags;
200 set_bit(slot_idx, bitmap);
203 static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba,
204 struct scsi_cmnd *scsi_cmnd)
207 void *bitmap = hisi_hba->slot_index_tags;
211 return scsi_cmnd->request->tag;
213 spin_lock_irqsave(&hisi_hba->lock, flags);
214 index = find_next_zero_bit(bitmap, hisi_hba->slot_index_count,
215 hisi_hba->last_slot_index + 1);
216 if (index >= hisi_hba->slot_index_count) {
217 index = find_next_zero_bit(bitmap,
218 hisi_hba->slot_index_count,
219 hisi_hba->hw->max_command_entries -
220 HISI_SAS_RESERVED_IPTT_CNT);
221 if (index >= hisi_hba->slot_index_count) {
222 spin_unlock_irqrestore(&hisi_hba->lock, flags);
223 return -SAS_QUEUE_FULL;
226 hisi_sas_slot_index_set(hisi_hba, index);
227 hisi_hba->last_slot_index = index;
228 spin_unlock_irqrestore(&hisi_hba->lock, flags);
233 static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba)
237 for (i = 0; i < hisi_hba->slot_index_count; ++i)
238 hisi_sas_slot_index_clear(hisi_hba, i);
241 void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task,
242 struct hisi_sas_slot *slot)
244 struct hisi_sas_dq *dq = &hisi_hba->dq[slot->dlvry_queue];
248 struct device *dev = hisi_hba->dev;
250 if (!task->lldd_task)
253 task->lldd_task = NULL;
255 if (!sas_protocol_ata(task->task_proto))
257 dma_unmap_sg(dev, task->scatter,
263 spin_lock_irqsave(&dq->lock, flags);
264 list_del_init(&slot->entry);
265 spin_unlock_irqrestore(&dq->lock, flags);
267 memset(slot, 0, offsetof(struct hisi_sas_slot, buf));
269 hisi_sas_slot_index_free(hisi_hba, slot->idx);
271 EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free);
273 static void hisi_sas_task_prep_smp(struct hisi_hba *hisi_hba,
274 struct hisi_sas_slot *slot)
276 hisi_hba->hw->prep_smp(hisi_hba, slot);
279 static void hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba,
280 struct hisi_sas_slot *slot)
282 hisi_hba->hw->prep_ssp(hisi_hba, slot);
285 static void hisi_sas_task_prep_ata(struct hisi_hba *hisi_hba,
286 struct hisi_sas_slot *slot)
288 hisi_hba->hw->prep_stp(hisi_hba, slot);
291 static void hisi_sas_task_prep_abort(struct hisi_hba *hisi_hba,
292 struct hisi_sas_slot *slot,
293 int device_id, int abort_flag, int tag_to_abort)
295 hisi_hba->hw->prep_abort(hisi_hba, slot,
296 device_id, abort_flag, tag_to_abort);
299 static void hisi_sas_dma_unmap(struct hisi_hba *hisi_hba,
300 struct sas_task *task, int n_elem,
301 int n_elem_req, int n_elem_resp)
303 struct device *dev = hisi_hba->dev;
305 if (!sas_protocol_ata(task->task_proto)) {
306 if (task->num_scatter) {
308 dma_unmap_sg(dev, task->scatter,
311 } else if (task->task_proto & SAS_PROTOCOL_SMP) {
313 dma_unmap_sg(dev, &task->smp_task.smp_req,
316 dma_unmap_sg(dev, &task->smp_task.smp_resp,
322 static int hisi_sas_dma_map(struct hisi_hba *hisi_hba,
323 struct sas_task *task, int *n_elem,
324 int *n_elem_req, int *n_elem_resp)
326 struct device *dev = hisi_hba->dev;
329 if (sas_protocol_ata(task->task_proto)) {
330 *n_elem = task->num_scatter;
332 unsigned int req_len, resp_len;
334 if (task->num_scatter) {
335 *n_elem = dma_map_sg(dev, task->scatter,
336 task->num_scatter, task->data_dir);
341 } else if (task->task_proto & SAS_PROTOCOL_SMP) {
342 *n_elem_req = dma_map_sg(dev, &task->smp_task.smp_req,
348 req_len = sg_dma_len(&task->smp_task.smp_req);
351 goto err_out_dma_unmap;
353 *n_elem_resp = dma_map_sg(dev, &task->smp_task.smp_resp,
357 goto err_out_dma_unmap;
359 resp_len = sg_dma_len(&task->smp_task.smp_resp);
360 if (resp_len & 0x3) {
362 goto err_out_dma_unmap;
367 if (*n_elem > HISI_SAS_SGE_PAGE_CNT) {
368 dev_err(dev, "task prep: n_elem(%d) > HISI_SAS_SGE_PAGE_CNT",
371 goto err_out_dma_unmap;
376 /* It would be better to call dma_unmap_sg() here, but it's messy */
377 hisi_sas_dma_unmap(hisi_hba, task, *n_elem,
378 *n_elem_req, *n_elem_resp);
383 static int hisi_sas_task_prep(struct sas_task *task,
384 struct hisi_sas_dq **dq_pointer,
385 bool is_tmf, struct hisi_sas_tmf_task *tmf,
388 struct domain_device *device = task->dev;
389 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
390 struct hisi_sas_device *sas_dev = device->lldd_dev;
391 struct hisi_sas_port *port;
392 struct hisi_sas_slot *slot;
393 struct hisi_sas_cmd_hdr *cmd_hdr_base;
394 struct asd_sas_port *sas_port = device->port;
395 struct device *dev = hisi_hba->dev;
396 int dlvry_queue_slot, dlvry_queue, rc, slot_idx;
397 int n_elem = 0, n_elem_req = 0, n_elem_resp = 0;
398 struct hisi_sas_dq *dq;
402 if (DEV_IS_GONE(sas_dev)) {
404 dev_info(dev, "task prep: device %d not ready\n",
407 dev_info(dev, "task prep: device %016llx not ready\n",
408 SAS_ADDR(device->sas_addr));
413 *dq_pointer = dq = sas_dev->dq;
415 port = to_hisi_sas_port(sas_port);
416 if (port && !port->port_attached) {
417 dev_info(dev, "task prep: %s port%d not attach device\n",
418 (dev_is_sata(device)) ?
425 rc = hisi_sas_dma_map(hisi_hba, task, &n_elem,
426 &n_elem_req, &n_elem_resp);
430 if (hisi_hba->hw->slot_index_alloc)
431 rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device);
433 struct scsi_cmnd *scsi_cmnd = NULL;
435 if (task->uldd_task) {
436 struct ata_queued_cmd *qc;
438 if (dev_is_sata(device)) {
439 qc = task->uldd_task;
440 scsi_cmnd = qc->scsicmd;
442 scsi_cmnd = task->uldd_task;
445 rc = hisi_sas_slot_index_alloc(hisi_hba, scsi_cmnd);
448 goto err_out_dma_unmap;
451 slot = &hisi_hba->slot_info[slot_idx];
453 spin_lock_irqsave(&dq->lock, flags);
454 wr_q_index = hisi_hba->hw->get_free_slot(hisi_hba, dq);
455 if (wr_q_index < 0) {
456 spin_unlock_irqrestore(&dq->lock, flags);
461 list_add_tail(&slot->delivery, &dq->list);
462 list_add_tail(&slot->entry, &sas_dev->list);
463 spin_unlock_irqrestore(&dq->lock, flags);
465 dlvry_queue = dq->id;
466 dlvry_queue_slot = wr_q_index;
468 slot->n_elem = n_elem;
469 slot->dlvry_queue = dlvry_queue;
470 slot->dlvry_queue_slot = dlvry_queue_slot;
471 cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
472 slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
476 slot->is_internal = is_tmf;
477 task->lldd_task = slot;
479 memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
480 memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ);
481 memset(hisi_sas_status_buf_addr_mem(slot), 0, HISI_SAS_STATUS_BUF_SZ);
483 switch (task->task_proto) {
484 case SAS_PROTOCOL_SMP:
485 hisi_sas_task_prep_smp(hisi_hba, slot);
487 case SAS_PROTOCOL_SSP:
488 hisi_sas_task_prep_ssp(hisi_hba, slot);
490 case SAS_PROTOCOL_SATA:
491 case SAS_PROTOCOL_STP:
492 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
493 hisi_sas_task_prep_ata(hisi_hba, slot);
496 dev_err(dev, "task prep: unknown/unsupported proto (0x%x)\n",
501 spin_lock_irqsave(&task->task_state_lock, flags);
502 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
503 spin_unlock_irqrestore(&task->task_state_lock, flags);
506 WRITE_ONCE(slot->ready, 1);
511 hisi_sas_slot_index_free(hisi_hba, slot_idx);
513 hisi_sas_dma_unmap(hisi_hba, task, n_elem,
514 n_elem_req, n_elem_resp);
516 dev_err(dev, "task prep: failed[%d]!\n", rc);
520 static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags,
521 bool is_tmf, struct hisi_sas_tmf_task *tmf)
526 struct hisi_hba *hisi_hba;
528 struct domain_device *device = task->dev;
529 struct asd_sas_port *sas_port = device->port;
530 struct hisi_sas_dq *dq = NULL;
533 struct task_status_struct *ts = &task->task_status;
535 ts->resp = SAS_TASK_UNDELIVERED;
536 ts->stat = SAS_PHY_DOWN;
538 * libsas will use dev->port, should
539 * not call task_done for sata
541 if (device->dev_type != SAS_SATA_DEV)
542 task->task_done(task);
546 hisi_hba = dev_to_hisi_hba(device);
549 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags))) {
553 down(&hisi_hba->sem);
557 /* protect task_prep and start_delivery sequence */
558 rc = hisi_sas_task_prep(task, &dq, is_tmf, tmf, &pass);
560 dev_err(dev, "task exec: failed[%d]!\n", rc);
563 spin_lock_irqsave(&dq->lock, flags);
564 hisi_hba->hw->start_delivery(dq);
565 spin_unlock_irqrestore(&dq->lock, flags);
571 static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no)
573 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
574 struct asd_sas_phy *sas_phy = &phy->sas_phy;
575 struct sas_ha_struct *sas_ha;
577 if (!phy->phy_attached)
580 sas_ha = &hisi_hba->sha;
581 sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE);
584 struct sas_phy *sphy = sas_phy->phy;
586 sphy->negotiated_linkrate = sas_phy->linkrate;
587 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
588 sphy->maximum_linkrate_hw =
589 hisi_hba->hw->phy_get_max_linkrate();
590 if (sphy->minimum_linkrate == SAS_LINK_RATE_UNKNOWN)
591 sphy->minimum_linkrate = phy->minimum_linkrate;
593 if (sphy->maximum_linkrate == SAS_LINK_RATE_UNKNOWN)
594 sphy->maximum_linkrate = phy->maximum_linkrate;
597 if (phy->phy_type & PORT_TYPE_SAS) {
598 struct sas_identify_frame *id;
600 id = (struct sas_identify_frame *)phy->frame_rcvd;
601 id->dev_type = phy->identify.device_type;
602 id->initiator_bits = SAS_PROTOCOL_ALL;
603 id->target_bits = phy->identify.target_port_protocols;
604 } else if (phy->phy_type & PORT_TYPE_SATA) {
608 sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
609 sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED);
612 static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device)
614 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
615 struct hisi_sas_device *sas_dev = NULL;
617 int last = hisi_hba->last_dev_id;
618 int first = (hisi_hba->last_dev_id + 1) % HISI_SAS_MAX_DEVICES;
621 spin_lock_irqsave(&hisi_hba->lock, flags);
622 for (i = first; i != last; i %= HISI_SAS_MAX_DEVICES) {
623 if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) {
624 int queue = i % hisi_hba->queue_count;
625 struct hisi_sas_dq *dq = &hisi_hba->dq[queue];
627 hisi_hba->devices[i].device_id = i;
628 sas_dev = &hisi_hba->devices[i];
629 sas_dev->dev_type = device->dev_type;
630 sas_dev->hisi_hba = hisi_hba;
631 sas_dev->sas_device = device;
633 INIT_LIST_HEAD(&hisi_hba->devices[i].list);
638 hisi_hba->last_dev_id = i;
639 spin_unlock_irqrestore(&hisi_hba->lock, flags);
644 #define HISI_SAS_SRST_ATA_DISK_CNT 3
645 static int hisi_sas_init_device(struct domain_device *device)
647 int rc = TMF_RESP_FUNC_COMPLETE;
649 struct hisi_sas_tmf_task tmf_task;
650 int retry = HISI_SAS_SRST_ATA_DISK_CNT;
651 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
653 switch (device->dev_type) {
655 int_to_scsilun(0, &lun);
657 tmf_task.tmf = TMF_CLEAR_TASK_SET;
658 rc = hisi_sas_debug_issue_ssp_tmf(device, lun.scsi_lun,
660 if (rc == TMF_RESP_FUNC_COMPLETE)
661 hisi_sas_release_task(hisi_hba, device);
665 case SAS_SATA_PM_PORT:
666 case SAS_SATA_PENDING:
667 while (retry-- > 0) {
668 rc = hisi_sas_softreset_ata_disk(device);
680 static int hisi_sas_dev_found(struct domain_device *device)
682 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
683 struct domain_device *parent_dev = device->parent;
684 struct hisi_sas_device *sas_dev;
685 struct device *dev = hisi_hba->dev;
688 if (hisi_hba->hw->alloc_dev)
689 sas_dev = hisi_hba->hw->alloc_dev(device);
691 sas_dev = hisi_sas_alloc_dev(device);
693 dev_err(dev, "fail alloc dev: max support %d devices\n",
694 HISI_SAS_MAX_DEVICES);
698 device->lldd_dev = sas_dev;
699 hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
701 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
703 u8 phy_num = parent_dev->ex_dev.num_phys;
706 for (phy_no = 0; phy_no < phy_num; phy_no++) {
707 phy = &parent_dev->ex_dev.ex_phy[phy_no];
708 if (SAS_ADDR(phy->attached_sas_addr) ==
709 SAS_ADDR(device->sas_addr))
713 if (phy_no == phy_num) {
714 dev_info(dev, "dev found: no attached "
715 "dev:%016llx at ex:%016llx\n",
716 SAS_ADDR(device->sas_addr),
717 SAS_ADDR(parent_dev->sas_addr));
723 dev_info(dev, "dev[%d:%x] found\n",
724 sas_dev->device_id, sas_dev->dev_type);
726 rc = hisi_sas_init_device(device);
732 hisi_sas_dev_gone(device);
736 int hisi_sas_slave_configure(struct scsi_device *sdev)
738 struct domain_device *dev = sdev_to_domain_dev(sdev);
739 int ret = sas_slave_configure(sdev);
743 if (!dev_is_sata(dev))
744 sas_change_queue_depth(sdev, 64);
748 EXPORT_SYMBOL_GPL(hisi_sas_slave_configure);
750 void hisi_sas_scan_start(struct Scsi_Host *shost)
752 struct hisi_hba *hisi_hba = shost_priv(shost);
754 hisi_hba->hw->phys_init(hisi_hba);
756 EXPORT_SYMBOL_GPL(hisi_sas_scan_start);
758 int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time)
760 struct hisi_hba *hisi_hba = shost_priv(shost);
761 struct sas_ha_struct *sha = &hisi_hba->sha;
763 /* Wait for PHY up interrupt to occur */
770 EXPORT_SYMBOL_GPL(hisi_sas_scan_finished);
772 static void hisi_sas_phyup_work(struct work_struct *work)
774 struct hisi_sas_phy *phy =
775 container_of(work, typeof(*phy), works[HISI_PHYE_PHY_UP]);
776 struct hisi_hba *hisi_hba = phy->hisi_hba;
777 struct asd_sas_phy *sas_phy = &phy->sas_phy;
778 int phy_no = sas_phy->id;
780 if (phy->identify.target_port_protocols == SAS_PROTOCOL_SSP)
781 hisi_hba->hw->sl_notify_ssp(hisi_hba, phy_no);
782 hisi_sas_bytes_dmaed(hisi_hba, phy_no);
785 static void hisi_sas_linkreset_work(struct work_struct *work)
787 struct hisi_sas_phy *phy =
788 container_of(work, typeof(*phy), works[HISI_PHYE_LINK_RESET]);
789 struct asd_sas_phy *sas_phy = &phy->sas_phy;
791 hisi_sas_control_phy(sas_phy, PHY_FUNC_LINK_RESET, NULL);
794 static const work_func_t hisi_sas_phye_fns[HISI_PHYES_NUM] = {
795 [HISI_PHYE_PHY_UP] = hisi_sas_phyup_work,
796 [HISI_PHYE_LINK_RESET] = hisi_sas_linkreset_work,
799 bool hisi_sas_notify_phy_event(struct hisi_sas_phy *phy,
800 enum hisi_sas_phy_event event)
802 struct hisi_hba *hisi_hba = phy->hisi_hba;
804 if (WARN_ON(event >= HISI_PHYES_NUM))
807 return queue_work(hisi_hba->wq, &phy->works[event]);
809 EXPORT_SYMBOL_GPL(hisi_sas_notify_phy_event);
811 static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no)
813 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
814 struct asd_sas_phy *sas_phy = &phy->sas_phy;
817 phy->hisi_hba = hisi_hba;
819 phy->minimum_linkrate = SAS_LINK_RATE_1_5_GBPS;
820 phy->maximum_linkrate = hisi_hba->hw->phy_get_max_linkrate();
821 sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0;
822 sas_phy->class = SAS;
823 sas_phy->iproto = SAS_PROTOCOL_ALL;
825 sas_phy->type = PHY_TYPE_PHYSICAL;
826 sas_phy->role = PHY_ROLE_INITIATOR;
827 sas_phy->oob_mode = OOB_NOT_CONNECTED;
828 sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
829 sas_phy->id = phy_no;
830 sas_phy->sas_addr = &hisi_hba->sas_addr[0];
831 sas_phy->frame_rcvd = &phy->frame_rcvd[0];
832 sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata;
833 sas_phy->lldd_phy = phy;
835 for (i = 0; i < HISI_PHYES_NUM; i++)
836 INIT_WORK(&phy->works[i], hisi_sas_phye_fns[i]);
838 spin_lock_init(&phy->lock);
841 static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy)
843 struct sas_ha_struct *sas_ha = sas_phy->ha;
844 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
845 struct hisi_sas_phy *phy = sas_phy->lldd_phy;
846 struct asd_sas_port *sas_port = sas_phy->port;
847 struct hisi_sas_port *port = to_hisi_sas_port(sas_port);
853 spin_lock_irqsave(&hisi_hba->lock, flags);
854 port->port_attached = 1;
855 port->id = phy->port_id;
857 sas_port->lldd_port = port;
858 spin_unlock_irqrestore(&hisi_hba->lock, flags);
861 static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, struct sas_task *task,
862 struct hisi_sas_slot *slot)
866 struct task_status_struct *ts;
868 ts = &task->task_status;
870 ts->resp = SAS_TASK_COMPLETE;
871 ts->stat = SAS_ABORTED_TASK;
872 spin_lock_irqsave(&task->task_state_lock, flags);
873 task->task_state_flags &=
874 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
875 task->task_state_flags |= SAS_TASK_STATE_DONE;
876 spin_unlock_irqrestore(&task->task_state_lock, flags);
879 hisi_sas_slot_task_free(hisi_hba, task, slot);
882 static void hisi_sas_release_task(struct hisi_hba *hisi_hba,
883 struct domain_device *device)
885 struct hisi_sas_slot *slot, *slot2;
886 struct hisi_sas_device *sas_dev = device->lldd_dev;
888 list_for_each_entry_safe(slot, slot2, &sas_dev->list, entry)
889 hisi_sas_do_release_task(hisi_hba, slot->task, slot);
892 void hisi_sas_release_tasks(struct hisi_hba *hisi_hba)
894 struct hisi_sas_device *sas_dev;
895 struct domain_device *device;
898 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
899 sas_dev = &hisi_hba->devices[i];
900 device = sas_dev->sas_device;
902 if ((sas_dev->dev_type == SAS_PHY_UNUSED) ||
906 hisi_sas_release_task(hisi_hba, device);
909 EXPORT_SYMBOL_GPL(hisi_sas_release_tasks);
911 static void hisi_sas_dereg_device(struct hisi_hba *hisi_hba,
912 struct domain_device *device)
914 if (hisi_hba->hw->dereg_device)
915 hisi_hba->hw->dereg_device(hisi_hba, device);
918 static void hisi_sas_dev_gone(struct domain_device *device)
920 struct hisi_sas_device *sas_dev = device->lldd_dev;
921 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
922 struct device *dev = hisi_hba->dev;
924 dev_info(dev, "dev[%d:%x] is gone\n",
925 sas_dev->device_id, sas_dev->dev_type);
927 if (!test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)) {
928 hisi_sas_internal_task_abort(hisi_hba, device,
929 HISI_SAS_INT_ABT_DEV, 0);
931 hisi_sas_dereg_device(hisi_hba, device);
933 down(&hisi_hba->sem);
934 hisi_hba->hw->clear_itct(hisi_hba, sas_dev);
936 device->lldd_dev = NULL;
939 if (hisi_hba->hw->free_device)
940 hisi_hba->hw->free_device(sas_dev);
941 sas_dev->dev_type = SAS_PHY_UNUSED;
944 static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
946 return hisi_sas_task_exec(task, gfp_flags, 0, NULL);
949 static void hisi_sas_phy_set_linkrate(struct hisi_hba *hisi_hba, int phy_no,
950 struct sas_phy_linkrates *r)
952 struct sas_phy_linkrates _r;
954 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
955 struct asd_sas_phy *sas_phy = &phy->sas_phy;
956 enum sas_linkrate min, max;
958 if (r->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) {
959 max = sas_phy->phy->maximum_linkrate;
960 min = r->minimum_linkrate;
961 } else if (r->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) {
962 max = r->maximum_linkrate;
963 min = sas_phy->phy->minimum_linkrate;
967 _r.maximum_linkrate = max;
968 _r.minimum_linkrate = min;
970 sas_phy->phy->maximum_linkrate = max;
971 sas_phy->phy->minimum_linkrate = min;
973 hisi_hba->hw->phy_disable(hisi_hba, phy_no);
975 hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, &_r);
976 hisi_hba->hw->phy_start(hisi_hba, phy_no);
979 static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
982 struct sas_ha_struct *sas_ha = sas_phy->ha;
983 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
984 int phy_no = sas_phy->id;
987 case PHY_FUNC_HARD_RESET:
988 hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no);
991 case PHY_FUNC_LINK_RESET:
992 hisi_hba->hw->phy_disable(hisi_hba, phy_no);
994 hisi_hba->hw->phy_start(hisi_hba, phy_no);
997 case PHY_FUNC_DISABLE:
998 hisi_hba->hw->phy_disable(hisi_hba, phy_no);
1001 case PHY_FUNC_SET_LINK_RATE:
1002 hisi_sas_phy_set_linkrate(hisi_hba, phy_no, funcdata);
1004 case PHY_FUNC_GET_EVENTS:
1005 if (hisi_hba->hw->get_events) {
1006 hisi_hba->hw->get_events(hisi_hba, phy_no);
1010 case PHY_FUNC_RELEASE_SPINUP_HOLD:
1017 static void hisi_sas_task_done(struct sas_task *task)
1019 del_timer(&task->slow_task->timer);
1020 complete(&task->slow_task->completion);
1023 static void hisi_sas_tmf_timedout(struct timer_list *t)
1025 struct sas_task_slow *slow = from_timer(slow, t, timer);
1026 struct sas_task *task = slow->task;
1027 unsigned long flags;
1028 bool is_completed = true;
1030 spin_lock_irqsave(&task->task_state_lock, flags);
1031 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1032 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1033 is_completed = false;
1035 spin_unlock_irqrestore(&task->task_state_lock, flags);
1038 complete(&task->slow_task->completion);
1041 #define TASK_TIMEOUT 20
1042 #define TASK_RETRY 3
1043 #define INTERNAL_ABORT_TIMEOUT 6
1044 static int hisi_sas_exec_internal_tmf_task(struct domain_device *device,
1045 void *parameter, u32 para_len,
1046 struct hisi_sas_tmf_task *tmf)
1048 struct hisi_sas_device *sas_dev = device->lldd_dev;
1049 struct hisi_hba *hisi_hba = sas_dev->hisi_hba;
1050 struct device *dev = hisi_hba->dev;
1051 struct sas_task *task;
1054 for (retry = 0; retry < TASK_RETRY; retry++) {
1055 task = sas_alloc_slow_task(GFP_KERNEL);
1060 task->task_proto = device->tproto;
1062 if (dev_is_sata(device)) {
1063 task->ata_task.device_control_reg_update = 1;
1064 memcpy(&task->ata_task.fis, parameter, para_len);
1066 memcpy(&task->ssp_task, parameter, para_len);
1068 task->task_done = hisi_sas_task_done;
1070 task->slow_task->timer.function = hisi_sas_tmf_timedout;
1071 task->slow_task->timer.expires = jiffies + TASK_TIMEOUT*HZ;
1072 add_timer(&task->slow_task->timer);
1074 res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf);
1077 del_timer(&task->slow_task->timer);
1078 dev_err(dev, "abort tmf: executing internal task failed: %d\n",
1083 wait_for_completion(&task->slow_task->completion);
1084 res = TMF_RESP_FUNC_FAILED;
1085 /* Even TMF timed out, return direct. */
1086 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1087 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1088 struct hisi_sas_slot *slot = task->lldd_task;
1090 dev_err(dev, "abort tmf: TMF task timeout and not done\n");
1092 struct hisi_sas_cq *cq =
1093 &hisi_hba->cq[slot->dlvry_queue];
1095 * flush tasklet to avoid free'ing task
1096 * before using task in IO completion
1098 tasklet_kill(&cq->tasklet);
1104 dev_err(dev, "abort tmf: TMF task timeout\n");
1107 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1108 task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
1109 res = TMF_RESP_FUNC_COMPLETE;
1113 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1114 task->task_status.stat == TMF_RESP_FUNC_SUCC) {
1115 res = TMF_RESP_FUNC_SUCC;
1119 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1120 task->task_status.stat == SAS_DATA_UNDERRUN) {
1121 /* no error, but return the number of bytes of
1124 dev_warn(dev, "abort tmf: task to dev %016llx "
1125 "resp: 0x%x sts 0x%x underrun\n",
1126 SAS_ADDR(device->sas_addr),
1127 task->task_status.resp,
1128 task->task_status.stat);
1129 res = task->task_status.residual;
1133 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1134 task->task_status.stat == SAS_DATA_OVERRUN) {
1135 dev_warn(dev, "abort tmf: blocked task error\n");
1140 dev_warn(dev, "abort tmf: task to dev "
1141 "%016llx resp: 0x%x status 0x%x\n",
1142 SAS_ADDR(device->sas_addr), task->task_status.resp,
1143 task->task_status.stat);
1144 sas_free_task(task);
1148 if (retry == TASK_RETRY)
1149 dev_warn(dev, "abort tmf: executing internal task failed!\n");
1150 sas_free_task(task);
1154 static void hisi_sas_fill_ata_reset_cmd(struct ata_device *dev,
1155 bool reset, int pmp, u8 *fis)
1157 struct ata_taskfile tf;
1159 ata_tf_init(dev, &tf);
1163 tf.ctl &= ~ATA_SRST;
1164 tf.command = ATA_CMD_DEV_RESET;
1165 ata_tf_to_fis(&tf, pmp, 0, fis);
1168 static int hisi_sas_softreset_ata_disk(struct domain_device *device)
1171 struct ata_port *ap = device->sata_dev.ap;
1172 struct ata_link *link;
1173 int rc = TMF_RESP_FUNC_FAILED;
1174 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1175 struct device *dev = hisi_hba->dev;
1176 int s = sizeof(struct host_to_dev_fis);
1178 ata_for_each_link(link, ap, EDGE) {
1179 int pmp = sata_srst_pmp(link);
1181 hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis);
1182 rc = hisi_sas_exec_internal_tmf_task(device, fis, s, NULL);
1183 if (rc != TMF_RESP_FUNC_COMPLETE)
1187 if (rc == TMF_RESP_FUNC_COMPLETE) {
1188 ata_for_each_link(link, ap, EDGE) {
1189 int pmp = sata_srst_pmp(link);
1191 hisi_sas_fill_ata_reset_cmd(link->device, 0, pmp, fis);
1192 rc = hisi_sas_exec_internal_tmf_task(device, fis,
1194 if (rc != TMF_RESP_FUNC_COMPLETE)
1195 dev_err(dev, "ata disk de-reset failed\n");
1198 dev_err(dev, "ata disk reset failed\n");
1201 if (rc == TMF_RESP_FUNC_COMPLETE)
1202 hisi_sas_release_task(hisi_hba, device);
1207 static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device,
1208 u8 *lun, struct hisi_sas_tmf_task *tmf)
1210 struct sas_ssp_task ssp_task;
1212 if (!(device->tproto & SAS_PROTOCOL_SSP))
1213 return TMF_RESP_FUNC_ESUPP;
1215 memcpy(ssp_task.LUN, lun, 8);
1217 return hisi_sas_exec_internal_tmf_task(device, &ssp_task,
1218 sizeof(ssp_task), tmf);
1221 static void hisi_sas_refresh_port_id(struct hisi_hba *hisi_hba)
1223 u32 state = hisi_hba->hw->get_phys_state(hisi_hba);
1226 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1227 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
1228 struct domain_device *device = sas_dev->sas_device;
1229 struct asd_sas_port *sas_port;
1230 struct hisi_sas_port *port;
1231 struct hisi_sas_phy *phy = NULL;
1232 struct asd_sas_phy *sas_phy;
1234 if ((sas_dev->dev_type == SAS_PHY_UNUSED)
1235 || !device || !device->port)
1238 sas_port = device->port;
1239 port = to_hisi_sas_port(sas_port);
1241 list_for_each_entry(sas_phy, &sas_port->phy_list, port_phy_el)
1242 if (state & BIT(sas_phy->id)) {
1243 phy = sas_phy->lldd_phy;
1248 port->id = phy->port_id;
1250 /* Update linkrate of directly attached device. */
1251 if (!device->parent)
1252 device->linkrate = phy->sas_phy.linkrate;
1254 hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
1260 static void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 old_state,
1263 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
1264 struct asd_sas_port *_sas_port = NULL;
1267 for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) {
1268 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1269 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1270 struct asd_sas_port *sas_port = sas_phy->port;
1271 bool do_port_check = !!(_sas_port != sas_port);
1273 if (!sas_phy->phy->enabled)
1276 /* Report PHY state change to libsas */
1277 if (state & BIT(phy_no)) {
1278 if (do_port_check && sas_port && sas_port->port_dev) {
1279 struct domain_device *dev = sas_port->port_dev;
1281 _sas_port = sas_port;
1283 if (DEV_IS_EXPANDER(dev->dev_type))
1284 sas_ha->notify_port_event(sas_phy,
1285 PORTE_BROADCAST_RCVD);
1287 } else if (old_state & (1 << phy_no))
1288 /* PHY down but was up before */
1289 hisi_sas_phy_down(hisi_hba, phy_no, 0);
1294 static void hisi_sas_reset_init_all_devices(struct hisi_hba *hisi_hba)
1296 struct hisi_sas_device *sas_dev;
1297 struct domain_device *device;
1300 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1301 sas_dev = &hisi_hba->devices[i];
1302 device = sas_dev->sas_device;
1304 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device)
1307 hisi_sas_init_device(device);
1311 static void hisi_sas_send_ata_reset_each_phy(struct hisi_hba *hisi_hba,
1312 struct asd_sas_port *sas_port,
1313 struct domain_device *device)
1315 struct hisi_sas_tmf_task tmf_task = { .force_phy = 1 };
1316 struct ata_port *ap = device->sata_dev.ap;
1317 struct device *dev = hisi_hba->dev;
1318 int s = sizeof(struct host_to_dev_fis);
1319 int rc = TMF_RESP_FUNC_FAILED;
1320 struct asd_sas_phy *sas_phy;
1321 struct ata_link *link;
1325 state = hisi_hba->hw->get_phys_state(hisi_hba);
1326 list_for_each_entry(sas_phy, &sas_port->phy_list, port_phy_el) {
1327 if (!(state & BIT(sas_phy->id)))
1330 ata_for_each_link(link, ap, EDGE) {
1331 int pmp = sata_srst_pmp(link);
1333 tmf_task.phy_id = sas_phy->id;
1334 hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis);
1335 rc = hisi_sas_exec_internal_tmf_task(device, fis, s,
1337 if (rc != TMF_RESP_FUNC_COMPLETE) {
1338 dev_err(dev, "phy%d ata reset failed rc=%d\n",
1346 static void hisi_sas_terminate_stp_reject(struct hisi_hba *hisi_hba)
1348 struct device *dev = hisi_hba->dev;
1351 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1352 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
1353 struct domain_device *device = sas_dev->sas_device;
1355 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device)
1358 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1359 HISI_SAS_INT_ABT_DEV, 0);
1361 dev_err(dev, "STP reject: abort dev failed %d\n", rc);
1364 for (port_no = 0; port_no < hisi_hba->n_phy; port_no++) {
1365 struct hisi_sas_port *port = &hisi_hba->port[port_no];
1366 struct asd_sas_port *sas_port = &port->sas_port;
1367 struct domain_device *port_dev = sas_port->port_dev;
1368 struct domain_device *device;
1370 if (!port_dev || !DEV_IS_EXPANDER(port_dev->dev_type))
1373 /* Try to find a SATA device */
1374 list_for_each_entry(device, &sas_port->dev_list,
1376 if (dev_is_sata(device)) {
1377 hisi_sas_send_ata_reset_each_phy(hisi_hba,
1386 void hisi_sas_controller_reset_prepare(struct hisi_hba *hisi_hba)
1388 struct Scsi_Host *shost = hisi_hba->shost;
1390 down(&hisi_hba->sem);
1391 hisi_hba->phy_state = hisi_hba->hw->get_phys_state(hisi_hba);
1393 scsi_block_requests(shost);
1394 hisi_hba->hw->wait_cmds_complete_timeout(hisi_hba, 100, 5000);
1396 if (timer_pending(&hisi_hba->timer))
1397 del_timer_sync(&hisi_hba->timer);
1399 set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1401 EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_prepare);
1403 void hisi_sas_controller_reset_done(struct hisi_hba *hisi_hba)
1405 struct Scsi_Host *shost = hisi_hba->shost;
1408 /* Init and wait for PHYs to come up and all libsas event finished. */
1409 hisi_hba->hw->phys_init(hisi_hba);
1411 hisi_sas_refresh_port_id(hisi_hba);
1412 clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1415 if (hisi_hba->reject_stp_links_msk)
1416 hisi_sas_terminate_stp_reject(hisi_hba);
1417 hisi_sas_reset_init_all_devices(hisi_hba);
1418 scsi_unblock_requests(shost);
1419 clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags);
1421 state = hisi_hba->hw->get_phys_state(hisi_hba);
1422 hisi_sas_rescan_topology(hisi_hba, hisi_hba->phy_state, state);
1424 EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_done);
1426 static int hisi_sas_controller_reset(struct hisi_hba *hisi_hba)
1428 struct device *dev = hisi_hba->dev;
1429 struct Scsi_Host *shost = hisi_hba->shost;
1432 if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct)
1433 queue_work(hisi_hba->wq, &hisi_hba->debugfs_work);
1435 if (!hisi_hba->hw->soft_reset)
1438 if (test_and_set_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags))
1441 dev_info(dev, "controller resetting...\n");
1442 hisi_sas_controller_reset_prepare(hisi_hba);
1444 rc = hisi_hba->hw->soft_reset(hisi_hba);
1446 dev_warn(dev, "controller reset failed (%d)\n", rc);
1447 clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags);
1449 scsi_unblock_requests(shost);
1450 clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags);
1454 hisi_sas_controller_reset_done(hisi_hba);
1455 dev_info(dev, "controller reset complete\n");
1460 static int hisi_sas_abort_task(struct sas_task *task)
1462 struct scsi_lun lun;
1463 struct hisi_sas_tmf_task tmf_task;
1464 struct domain_device *device = task->dev;
1465 struct hisi_sas_device *sas_dev = device->lldd_dev;
1466 struct hisi_hba *hisi_hba;
1468 int rc = TMF_RESP_FUNC_FAILED;
1469 unsigned long flags;
1472 return TMF_RESP_FUNC_FAILED;
1474 hisi_hba = dev_to_hisi_hba(task->dev);
1475 dev = hisi_hba->dev;
1477 spin_lock_irqsave(&task->task_state_lock, flags);
1478 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1479 struct hisi_sas_slot *slot = task->lldd_task;
1480 struct hisi_sas_cq *cq;
1484 * flush tasklet to avoid free'ing task
1485 * before using task in IO completion
1487 cq = &hisi_hba->cq[slot->dlvry_queue];
1488 tasklet_kill(&cq->tasklet);
1490 spin_unlock_irqrestore(&task->task_state_lock, flags);
1491 rc = TMF_RESP_FUNC_COMPLETE;
1494 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1495 spin_unlock_irqrestore(&task->task_state_lock, flags);
1497 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1498 struct scsi_cmnd *cmnd = task->uldd_task;
1499 struct hisi_sas_slot *slot = task->lldd_task;
1500 u16 tag = slot->idx;
1503 int_to_scsilun(cmnd->device->lun, &lun);
1504 tmf_task.tmf = TMF_ABORT_TASK;
1505 tmf_task.tag_of_task_to_be_managed = tag;
1507 rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun,
1510 rc2 = hisi_sas_internal_task_abort(hisi_hba, device,
1511 HISI_SAS_INT_ABT_CMD, tag);
1513 dev_err(dev, "abort task: internal abort (%d)\n", rc2);
1514 return TMF_RESP_FUNC_FAILED;
1518 * If the TMF finds that the IO is not in the device and also
1519 * the internal abort does not succeed, then it is safe to
1521 * Note: if the internal abort succeeds then the slot
1522 * will have already been completed
1524 if (rc == TMF_RESP_FUNC_COMPLETE && rc2 != TMF_RESP_FUNC_SUCC) {
1525 if (task->lldd_task)
1526 hisi_sas_do_release_task(hisi_hba, task, slot);
1528 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1529 task->task_proto & SAS_PROTOCOL_STP) {
1530 if (task->dev->dev_type == SAS_SATA_DEV) {
1531 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1532 HISI_SAS_INT_ABT_DEV, 0);
1534 dev_err(dev, "abort task: internal abort failed\n");
1537 hisi_sas_dereg_device(hisi_hba, device);
1538 rc = hisi_sas_softreset_ata_disk(device);
1540 } else if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SMP) {
1542 struct hisi_sas_slot *slot = task->lldd_task;
1543 u32 tag = slot->idx;
1544 struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue];
1546 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1547 HISI_SAS_INT_ABT_CMD, tag);
1548 if (((rc < 0) || (rc == TMF_RESP_FUNC_FAILED)) &&
1551 * flush tasklet to avoid free'ing task
1552 * before using task in IO completion
1554 tasklet_kill(&cq->tasklet);
1560 if (rc != TMF_RESP_FUNC_COMPLETE)
1561 dev_notice(dev, "abort task: rc=%d\n", rc);
1565 static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun)
1567 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1568 struct device *dev = hisi_hba->dev;
1569 struct hisi_sas_tmf_task tmf_task;
1570 int rc = TMF_RESP_FUNC_FAILED;
1572 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1573 HISI_SAS_INT_ABT_DEV, 0);
1575 dev_err(dev, "abort task set: internal abort rc=%d\n", rc);
1576 return TMF_RESP_FUNC_FAILED;
1578 hisi_sas_dereg_device(hisi_hba, device);
1580 tmf_task.tmf = TMF_ABORT_TASK_SET;
1581 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1583 if (rc == TMF_RESP_FUNC_COMPLETE)
1584 hisi_sas_release_task(hisi_hba, device);
1589 static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun)
1591 int rc = TMF_RESP_FUNC_FAILED;
1592 struct hisi_sas_tmf_task tmf_task;
1594 tmf_task.tmf = TMF_CLEAR_ACA;
1595 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1600 static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device)
1602 struct sas_phy *local_phy = sas_get_local_phy(device);
1603 int rc, reset_type = (device->dev_type == SAS_SATA_DEV ||
1604 (device->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
1605 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1606 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
1607 struct asd_sas_phy *sas_phy = sas_ha->sas_phy[local_phy->number];
1608 struct hisi_sas_phy *phy = container_of(sas_phy,
1609 struct hisi_sas_phy, sas_phy);
1610 DECLARE_COMPLETION_ONSTACK(phyreset);
1612 if (scsi_is_sas_phy_local(local_phy)) {
1614 phy->reset_completion = &phyreset;
1617 rc = sas_phy_reset(local_phy, reset_type);
1618 sas_put_local_phy(local_phy);
1620 if (scsi_is_sas_phy_local(local_phy)) {
1621 int ret = wait_for_completion_timeout(&phyreset, 2 * HZ);
1622 unsigned long flags;
1624 spin_lock_irqsave(&phy->lock, flags);
1625 phy->reset_completion = NULL;
1627 spin_unlock_irqrestore(&phy->lock, flags);
1629 /* report PHY down if timed out */
1631 hisi_sas_phy_down(hisi_hba, sas_phy->id, 0);
1638 static int hisi_sas_I_T_nexus_reset(struct domain_device *device)
1640 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1641 struct device *dev = hisi_hba->dev;
1642 int rc = TMF_RESP_FUNC_FAILED;
1644 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1645 HISI_SAS_INT_ABT_DEV, 0);
1647 dev_err(dev, "I_T nexus reset: internal abort (%d)\n", rc);
1648 return TMF_RESP_FUNC_FAILED;
1650 hisi_sas_dereg_device(hisi_hba, device);
1652 rc = hisi_sas_debug_I_T_nexus_reset(device);
1654 if ((rc == TMF_RESP_FUNC_COMPLETE) || (rc == -ENODEV))
1655 hisi_sas_release_task(hisi_hba, device);
1660 static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun)
1662 struct hisi_sas_device *sas_dev = device->lldd_dev;
1663 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1664 struct device *dev = hisi_hba->dev;
1665 int rc = TMF_RESP_FUNC_FAILED;
1667 if (dev_is_sata(device)) {
1668 struct sas_phy *phy;
1670 /* Clear internal IO and then hardreset */
1671 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1672 HISI_SAS_INT_ABT_DEV, 0);
1674 dev_err(dev, "lu_reset: internal abort failed\n");
1677 hisi_sas_dereg_device(hisi_hba, device);
1679 phy = sas_get_local_phy(device);
1681 rc = sas_phy_reset(phy, 1);
1684 hisi_sas_release_task(hisi_hba, device);
1685 sas_put_local_phy(phy);
1687 struct hisi_sas_tmf_task tmf_task = { .tmf = TMF_LU_RESET };
1689 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1690 HISI_SAS_INT_ABT_DEV, 0);
1692 dev_err(dev, "lu_reset: internal abort failed\n");
1695 hisi_sas_dereg_device(hisi_hba, device);
1697 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1698 if (rc == TMF_RESP_FUNC_COMPLETE)
1699 hisi_sas_release_task(hisi_hba, device);
1702 if (rc != TMF_RESP_FUNC_COMPLETE)
1703 dev_err(dev, "lu_reset: for device[%d]:rc= %d\n",
1704 sas_dev->device_id, rc);
1708 static int hisi_sas_clear_nexus_ha(struct sas_ha_struct *sas_ha)
1710 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
1711 struct device *dev = hisi_hba->dev;
1712 HISI_SAS_DECLARE_RST_WORK_ON_STACK(r);
1715 queue_work(hisi_hba->wq, &r.work);
1716 wait_for_completion(r.completion);
1718 return TMF_RESP_FUNC_FAILED;
1720 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1721 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i];
1722 struct domain_device *device = sas_dev->sas_device;
1724 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device ||
1725 DEV_IS_EXPANDER(device->dev_type))
1728 rc = hisi_sas_debug_I_T_nexus_reset(device);
1729 if (rc != TMF_RESP_FUNC_COMPLETE)
1730 dev_info(dev, "clear nexus ha: for device[%d] rc=%d\n",
1731 sas_dev->device_id, rc);
1734 hisi_sas_release_tasks(hisi_hba);
1736 return TMF_RESP_FUNC_COMPLETE;
1739 static int hisi_sas_query_task(struct sas_task *task)
1741 struct scsi_lun lun;
1742 struct hisi_sas_tmf_task tmf_task;
1743 int rc = TMF_RESP_FUNC_FAILED;
1745 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1746 struct scsi_cmnd *cmnd = task->uldd_task;
1747 struct domain_device *device = task->dev;
1748 struct hisi_sas_slot *slot = task->lldd_task;
1749 u32 tag = slot->idx;
1751 int_to_scsilun(cmnd->device->lun, &lun);
1752 tmf_task.tmf = TMF_QUERY_TASK;
1753 tmf_task.tag_of_task_to_be_managed = tag;
1755 rc = hisi_sas_debug_issue_ssp_tmf(device,
1759 /* The task is still in Lun, release it then */
1760 case TMF_RESP_FUNC_SUCC:
1761 /* The task is not in Lun or failed, reset the phy */
1762 case TMF_RESP_FUNC_FAILED:
1763 case TMF_RESP_FUNC_COMPLETE:
1766 rc = TMF_RESP_FUNC_FAILED;
1774 hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, int device_id,
1775 struct sas_task *task, int abort_flag,
1778 struct domain_device *device = task->dev;
1779 struct hisi_sas_device *sas_dev = device->lldd_dev;
1780 struct device *dev = hisi_hba->dev;
1781 struct hisi_sas_port *port;
1782 struct hisi_sas_slot *slot;
1783 struct asd_sas_port *sas_port = device->port;
1784 struct hisi_sas_cmd_hdr *cmd_hdr_base;
1785 struct hisi_sas_dq *dq = sas_dev->dq;
1786 int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx;
1787 unsigned long flags, flags_dq = 0;
1790 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags)))
1796 port = to_hisi_sas_port(sas_port);
1798 /* simply get a slot and send abort command */
1799 rc = hisi_sas_slot_index_alloc(hisi_hba, NULL);
1804 slot = &hisi_hba->slot_info[slot_idx];
1806 spin_lock_irqsave(&dq->lock, flags_dq);
1807 wr_q_index = hisi_hba->hw->get_free_slot(hisi_hba, dq);
1808 if (wr_q_index < 0) {
1809 spin_unlock_irqrestore(&dq->lock, flags_dq);
1813 list_add_tail(&slot->delivery, &dq->list);
1814 spin_unlock_irqrestore(&dq->lock, flags_dq);
1816 dlvry_queue = dq->id;
1817 dlvry_queue_slot = wr_q_index;
1819 slot->n_elem = n_elem;
1820 slot->dlvry_queue = dlvry_queue;
1821 slot->dlvry_queue_slot = dlvry_queue_slot;
1822 cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
1823 slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
1826 slot->is_internal = true;
1827 task->lldd_task = slot;
1829 memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
1830 memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ);
1831 memset(hisi_sas_status_buf_addr_mem(slot), 0, HISI_SAS_STATUS_BUF_SZ);
1833 hisi_sas_task_prep_abort(hisi_hba, slot, device_id,
1834 abort_flag, task_tag);
1836 spin_lock_irqsave(&task->task_state_lock, flags);
1837 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
1838 spin_unlock_irqrestore(&task->task_state_lock, flags);
1839 WRITE_ONCE(slot->ready, 1);
1840 /* send abort command to the chip */
1841 spin_lock_irqsave(&dq->lock, flags);
1842 list_add_tail(&slot->entry, &sas_dev->list);
1843 hisi_hba->hw->start_delivery(dq);
1844 spin_unlock_irqrestore(&dq->lock, flags);
1849 hisi_sas_slot_index_free(hisi_hba, slot_idx);
1851 dev_err(dev, "internal abort task prep: failed[%d]!\n", rc);
1857 * hisi_sas_internal_task_abort -- execute an internal
1858 * abort command for single IO command or a device
1859 * @hisi_hba: host controller struct
1860 * @device: domain device
1861 * @abort_flag: mode of operation, device or single IO
1862 * @tag: tag of IO to be aborted (only relevant to single
1866 hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
1867 struct domain_device *device,
1868 int abort_flag, int tag)
1870 struct sas_task *task;
1871 struct hisi_sas_device *sas_dev = device->lldd_dev;
1872 struct device *dev = hisi_hba->dev;
1876 * The interface is not realized means this HW don't support internal
1877 * abort, or don't need to do internal abort. Then here, we return
1878 * TMF_RESP_FUNC_FAILED and let other steps go on, which depends that
1879 * the internal abort has been executed and returned CQ.
1881 if (!hisi_hba->hw->prep_abort)
1882 return TMF_RESP_FUNC_FAILED;
1884 task = sas_alloc_slow_task(GFP_KERNEL);
1889 task->task_proto = device->tproto;
1890 task->task_done = hisi_sas_task_done;
1891 task->slow_task->timer.function = hisi_sas_tmf_timedout;
1892 task->slow_task->timer.expires = jiffies + INTERNAL_ABORT_TIMEOUT*HZ;
1893 add_timer(&task->slow_task->timer);
1895 res = hisi_sas_internal_abort_task_exec(hisi_hba, sas_dev->device_id,
1896 task, abort_flag, tag);
1898 del_timer(&task->slow_task->timer);
1899 dev_err(dev, "internal task abort: executing internal task failed: %d\n",
1903 wait_for_completion(&task->slow_task->completion);
1904 res = TMF_RESP_FUNC_FAILED;
1906 /* Internal abort timed out */
1907 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1908 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1909 struct hisi_sas_slot *slot = task->lldd_task;
1912 struct hisi_sas_cq *cq =
1913 &hisi_hba->cq[slot->dlvry_queue];
1915 * flush tasklet to avoid free'ing task
1916 * before using task in IO completion
1918 tasklet_kill(&cq->tasklet);
1921 dev_err(dev, "internal task abort: timeout and not done.\n");
1926 dev_err(dev, "internal task abort: timeout.\n");
1929 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1930 task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
1931 res = TMF_RESP_FUNC_COMPLETE;
1935 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1936 task->task_status.stat == TMF_RESP_FUNC_SUCC) {
1937 res = TMF_RESP_FUNC_SUCC;
1942 dev_dbg(dev, "internal task abort: task to dev %016llx task=%p "
1943 "resp: 0x%x sts 0x%x\n",
1944 SAS_ADDR(device->sas_addr),
1946 task->task_status.resp, /* 0 is complete, -1 is undelivered */
1947 task->task_status.stat);
1948 sas_free_task(task);
1953 static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy)
1955 hisi_sas_port_notify_formed(sas_phy);
1958 static int hisi_sas_write_gpio(struct sas_ha_struct *sha, u8 reg_type,
1959 u8 reg_index, u8 reg_count, u8 *write_data)
1961 struct hisi_hba *hisi_hba = sha->lldd_ha;
1963 if (!hisi_hba->hw->write_gpio)
1966 return hisi_hba->hw->write_gpio(hisi_hba, reg_type,
1967 reg_index, reg_count, write_data);
1970 static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy)
1972 phy->phy_attached = 0;
1977 void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy)
1979 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1980 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1981 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
1982 struct device *dev = hisi_hba->dev;
1985 /* Phy down but ready */
1986 hisi_sas_bytes_dmaed(hisi_hba, phy_no);
1987 hisi_sas_port_notify_formed(sas_phy);
1989 struct hisi_sas_port *port = phy->port;
1991 if (test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags) ||
1993 dev_info(dev, "ignore flutter phy%d down\n", phy_no);
1996 /* Phy down and not ready */
1997 sas_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL);
1998 sas_phy_disconnected(sas_phy);
2001 if (phy->phy_type & PORT_TYPE_SAS) {
2002 int port_id = port->id;
2004 if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba,
2006 port->port_attached = 0;
2007 } else if (phy->phy_type & PORT_TYPE_SATA)
2008 port->port_attached = 0;
2010 hisi_sas_phy_disconnected(phy);
2013 EXPORT_SYMBOL_GPL(hisi_sas_phy_down);
2015 void hisi_sas_kill_tasklets(struct hisi_hba *hisi_hba)
2019 for (i = 0; i < hisi_hba->queue_count; i++) {
2020 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2022 tasklet_kill(&cq->tasklet);
2025 EXPORT_SYMBOL_GPL(hisi_sas_kill_tasklets);
2027 struct scsi_transport_template *hisi_sas_stt;
2028 EXPORT_SYMBOL_GPL(hisi_sas_stt);
2030 static struct sas_domain_function_template hisi_sas_transport_ops = {
2031 .lldd_dev_found = hisi_sas_dev_found,
2032 .lldd_dev_gone = hisi_sas_dev_gone,
2033 .lldd_execute_task = hisi_sas_queue_command,
2034 .lldd_control_phy = hisi_sas_control_phy,
2035 .lldd_abort_task = hisi_sas_abort_task,
2036 .lldd_abort_task_set = hisi_sas_abort_task_set,
2037 .lldd_clear_aca = hisi_sas_clear_aca,
2038 .lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset,
2039 .lldd_lu_reset = hisi_sas_lu_reset,
2040 .lldd_query_task = hisi_sas_query_task,
2041 .lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha,
2042 .lldd_port_formed = hisi_sas_port_formed,
2043 .lldd_write_gpio = hisi_sas_write_gpio,
2046 void hisi_sas_init_mem(struct hisi_hba *hisi_hba)
2048 int i, s, max_command_entries = hisi_hba->hw->max_command_entries;
2050 for (i = 0; i < hisi_hba->queue_count; i++) {
2051 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2052 struct hisi_sas_dq *dq = &hisi_hba->dq[i];
2054 s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
2055 memset(hisi_hba->cmd_hdr[i], 0, s);
2058 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
2059 memset(hisi_hba->complete_hdr[i], 0, s);
2063 s = sizeof(struct hisi_sas_initial_fis) * hisi_hba->n_phy;
2064 memset(hisi_hba->initial_fis, 0, s);
2066 s = max_command_entries * sizeof(struct hisi_sas_iost);
2067 memset(hisi_hba->iost, 0, s);
2069 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
2070 memset(hisi_hba->breakpoint, 0, s);
2072 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_sata_breakpoint);
2073 memset(hisi_hba->sata_breakpoint, 0, s);
2075 EXPORT_SYMBOL_GPL(hisi_sas_init_mem);
2077 int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost)
2079 struct device *dev = hisi_hba->dev;
2080 int i, j, s, max_command_entries = hisi_hba->hw->max_command_entries;
2081 int max_command_entries_ru, sz_slot_buf_ru;
2082 int blk_cnt, slots_per_blk;
2084 sema_init(&hisi_hba->sem, 1);
2085 spin_lock_init(&hisi_hba->lock);
2086 for (i = 0; i < hisi_hba->n_phy; i++) {
2087 hisi_sas_phy_init(hisi_hba, i);
2088 hisi_hba->port[i].port_attached = 0;
2089 hisi_hba->port[i].id = -1;
2092 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
2093 hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED;
2094 hisi_hba->devices[i].device_id = i;
2097 for (i = 0; i < hisi_hba->queue_count; i++) {
2098 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
2099 struct hisi_sas_dq *dq = &hisi_hba->dq[i];
2101 /* Completion queue structure */
2103 cq->hisi_hba = hisi_hba;
2105 /* Delivery queue structure */
2106 spin_lock_init(&dq->lock);
2107 INIT_LIST_HEAD(&dq->list);
2109 dq->hisi_hba = hisi_hba;
2111 /* Delivery queue */
2112 s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
2113 hisi_hba->cmd_hdr[i] = dmam_alloc_coherent(dev, s,
2114 &hisi_hba->cmd_hdr_dma[i],
2116 if (!hisi_hba->cmd_hdr[i])
2119 /* Completion queue */
2120 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
2121 hisi_hba->complete_hdr[i] = dmam_alloc_coherent(dev, s,
2122 &hisi_hba->complete_hdr_dma[i],
2124 if (!hisi_hba->complete_hdr[i])
2128 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
2129 hisi_hba->itct = dmam_alloc_coherent(dev, s, &hisi_hba->itct_dma,
2131 if (!hisi_hba->itct)
2133 memset(hisi_hba->itct, 0, s);
2135 hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries,
2136 sizeof(struct hisi_sas_slot),
2138 if (!hisi_hba->slot_info)
2141 /* roundup to avoid overly large block size */
2142 max_command_entries_ru = roundup(max_command_entries, 64);
2143 sz_slot_buf_ru = roundup(sizeof(struct hisi_sas_slot_buf_table), 64);
2144 s = lcm(max_command_entries_ru, sz_slot_buf_ru);
2145 blk_cnt = (max_command_entries_ru * sz_slot_buf_ru) / s;
2146 slots_per_blk = s / sz_slot_buf_ru;
2147 for (i = 0; i < blk_cnt; i++) {
2148 struct hisi_sas_slot_buf_table *buf;
2150 int slot_index = i * slots_per_blk;
2152 buf = dmam_alloc_coherent(dev, s, &buf_dma, GFP_KERNEL);
2157 for (j = 0; j < slots_per_blk; j++, slot_index++) {
2158 struct hisi_sas_slot *slot;
2160 slot = &hisi_hba->slot_info[slot_index];
2162 slot->buf_dma = buf_dma;
2163 slot->idx = slot_index;
2166 buf_dma += sizeof(*buf);
2170 s = max_command_entries * sizeof(struct hisi_sas_iost);
2171 hisi_hba->iost = dmam_alloc_coherent(dev, s, &hisi_hba->iost_dma,
2173 if (!hisi_hba->iost)
2176 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
2177 hisi_hba->breakpoint = dmam_alloc_coherent(dev, s,
2178 &hisi_hba->breakpoint_dma,
2180 if (!hisi_hba->breakpoint)
2183 hisi_hba->slot_index_count = max_command_entries;
2184 s = hisi_hba->slot_index_count / BITS_PER_BYTE;
2185 hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL);
2186 if (!hisi_hba->slot_index_tags)
2189 s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
2190 hisi_hba->initial_fis = dmam_alloc_coherent(dev, s,
2191 &hisi_hba->initial_fis_dma,
2193 if (!hisi_hba->initial_fis)
2196 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_sata_breakpoint);
2197 hisi_hba->sata_breakpoint = dmam_alloc_coherent(dev, s,
2198 &hisi_hba->sata_breakpoint_dma,
2200 if (!hisi_hba->sata_breakpoint)
2202 hisi_sas_init_mem(hisi_hba);
2204 hisi_sas_slot_index_init(hisi_hba);
2205 hisi_hba->last_slot_index = hisi_hba->hw->max_command_entries -
2206 HISI_SAS_RESERVED_IPTT_CNT;
2208 hisi_hba->wq = create_singlethread_workqueue(dev_name(dev));
2209 if (!hisi_hba->wq) {
2210 dev_err(dev, "sas_alloc: failed to create workqueue\n");
2218 EXPORT_SYMBOL_GPL(hisi_sas_alloc);
2220 void hisi_sas_free(struct hisi_hba *hisi_hba)
2223 destroy_workqueue(hisi_hba->wq);
2225 EXPORT_SYMBOL_GPL(hisi_sas_free);
2227 void hisi_sas_rst_work_handler(struct work_struct *work)
2229 struct hisi_hba *hisi_hba =
2230 container_of(work, struct hisi_hba, rst_work);
2232 hisi_sas_controller_reset(hisi_hba);
2234 EXPORT_SYMBOL_GPL(hisi_sas_rst_work_handler);
2236 void hisi_sas_sync_rst_work_handler(struct work_struct *work)
2238 struct hisi_sas_rst *rst =
2239 container_of(work, struct hisi_sas_rst, work);
2241 if (!hisi_sas_controller_reset(rst->hisi_hba))
2243 complete(rst->completion);
2245 EXPORT_SYMBOL_GPL(hisi_sas_sync_rst_work_handler);
2247 int hisi_sas_get_fw_info(struct hisi_hba *hisi_hba)
2249 struct device *dev = hisi_hba->dev;
2250 struct platform_device *pdev = hisi_hba->platform_dev;
2251 struct device_node *np = pdev ? pdev->dev.of_node : NULL;
2254 if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr,
2256 dev_err(dev, "could not get property sas-addr\n");
2262 * These properties are only required for platform device-based
2263 * controller with DT firmware.
2265 hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np,
2266 "hisilicon,sas-syscon");
2267 if (IS_ERR(hisi_hba->ctrl)) {
2268 dev_err(dev, "could not get syscon\n");
2272 if (device_property_read_u32(dev, "ctrl-reset-reg",
2273 &hisi_hba->ctrl_reset_reg)) {
2275 "could not get property ctrl-reset-reg\n");
2279 if (device_property_read_u32(dev, "ctrl-reset-sts-reg",
2280 &hisi_hba->ctrl_reset_sts_reg)) {
2282 "could not get property ctrl-reset-sts-reg\n");
2286 if (device_property_read_u32(dev, "ctrl-clock-ena-reg",
2287 &hisi_hba->ctrl_clock_ena_reg)) {
2289 "could not get property ctrl-clock-ena-reg\n");
2294 refclk = devm_clk_get(dev, NULL);
2296 dev_dbg(dev, "no ref clk property\n");
2298 hisi_hba->refclk_frequency_mhz = clk_get_rate(refclk) / 1000000;
2300 if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy)) {
2301 dev_err(dev, "could not get property phy-count\n");
2305 if (device_property_read_u32(dev, "queue-count",
2306 &hisi_hba->queue_count)) {
2307 dev_err(dev, "could not get property queue-count\n");
2313 EXPORT_SYMBOL_GPL(hisi_sas_get_fw_info);
2315 static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
2316 const struct hisi_sas_hw *hw)
2318 struct resource *res;
2319 struct Scsi_Host *shost;
2320 struct hisi_hba *hisi_hba;
2321 struct device *dev = &pdev->dev;
2323 shost = scsi_host_alloc(hw->sht, sizeof(*hisi_hba));
2325 dev_err(dev, "scsi host alloc failed\n");
2328 hisi_hba = shost_priv(shost);
2330 INIT_WORK(&hisi_hba->rst_work, hisi_sas_rst_work_handler);
2332 hisi_hba->dev = dev;
2333 hisi_hba->platform_dev = pdev;
2334 hisi_hba->shost = shost;
2335 SHOST_TO_SAS_HA(shost) = &hisi_hba->sha;
2337 timer_setup(&hisi_hba->timer, NULL, 0);
2339 if (hisi_sas_get_fw_info(hisi_hba) < 0)
2342 if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) &&
2343 dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) {
2344 dev_err(dev, "No usable DMA addressing method\n");
2348 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
2349 hisi_hba->regs = devm_ioremap_resource(dev, res);
2350 if (IS_ERR(hisi_hba->regs))
2353 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
2355 hisi_hba->sgpio_regs = devm_ioremap_resource(dev, res);
2356 if (IS_ERR(hisi_hba->sgpio_regs))
2360 if (hisi_sas_alloc(hisi_hba, shost)) {
2361 hisi_sas_free(hisi_hba);
2367 scsi_host_put(shost);
2368 dev_err(dev, "shost alloc failed\n");
2372 int hisi_sas_probe(struct platform_device *pdev,
2373 const struct hisi_sas_hw *hw)
2375 struct Scsi_Host *shost;
2376 struct hisi_hba *hisi_hba;
2377 struct device *dev = &pdev->dev;
2378 struct asd_sas_phy **arr_phy;
2379 struct asd_sas_port **arr_port;
2380 struct sas_ha_struct *sha;
2381 int rc, phy_nr, port_nr, i;
2383 shost = hisi_sas_shost_alloc(pdev, hw);
2387 sha = SHOST_TO_SAS_HA(shost);
2388 hisi_hba = shost_priv(shost);
2389 platform_set_drvdata(pdev, sha);
2391 phy_nr = port_nr = hisi_hba->n_phy;
2393 arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL);
2394 arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL);
2395 if (!arr_phy || !arr_port) {
2400 sha->sas_phy = arr_phy;
2401 sha->sas_port = arr_port;
2402 sha->lldd_ha = hisi_hba;
2404 shost->transportt = hisi_sas_stt;
2405 shost->max_id = HISI_SAS_MAX_DEVICES;
2406 shost->max_lun = ~0;
2407 shost->max_channel = 1;
2408 shost->max_cmd_len = 16;
2409 if (hisi_hba->hw->slot_index_alloc) {
2410 shost->can_queue = hisi_hba->hw->max_command_entries;
2411 shost->cmd_per_lun = hisi_hba->hw->max_command_entries;
2413 shost->can_queue = hisi_hba->hw->max_command_entries -
2414 HISI_SAS_RESERVED_IPTT_CNT;
2415 shost->cmd_per_lun = hisi_hba->hw->max_command_entries -
2416 HISI_SAS_RESERVED_IPTT_CNT;
2419 sha->sas_ha_name = DRV_NAME;
2420 sha->dev = hisi_hba->dev;
2421 sha->lldd_module = THIS_MODULE;
2422 sha->sas_addr = &hisi_hba->sas_addr[0];
2423 sha->num_phys = hisi_hba->n_phy;
2424 sha->core.shost = hisi_hba->shost;
2426 for (i = 0; i < hisi_hba->n_phy; i++) {
2427 sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy;
2428 sha->sas_port[i] = &hisi_hba->port[i].sas_port;
2431 rc = scsi_add_host(shost, &pdev->dev);
2435 rc = sas_register_ha(sha);
2437 goto err_out_register_ha;
2439 rc = hisi_hba->hw->hw_init(hisi_hba);
2441 goto err_out_register_ha;
2443 scsi_scan_host(shost);
2447 err_out_register_ha:
2448 scsi_remove_host(shost);
2450 hisi_sas_free(hisi_hba);
2451 scsi_host_put(shost);
2454 EXPORT_SYMBOL_GPL(hisi_sas_probe);
2456 struct dentry *hisi_sas_debugfs_dir;
2458 static void hisi_sas_debugfs_snapshot_cq_reg(struct hisi_hba *hisi_hba)
2460 int queue_entry_size = hisi_hba->hw->complete_hdr_size;
2463 for (i = 0; i < hisi_hba->queue_count; i++)
2464 memcpy(hisi_hba->debugfs_complete_hdr[i],
2465 hisi_hba->complete_hdr[i],
2466 HISI_SAS_QUEUE_SLOTS * queue_entry_size);
2469 static void hisi_sas_debugfs_snapshot_dq_reg(struct hisi_hba *hisi_hba)
2471 int queue_entry_size = hisi_hba->hw->complete_hdr_size;
2474 for (i = 0; i < hisi_hba->queue_count; i++)
2475 memcpy(hisi_hba->debugfs_cmd_hdr[i],
2476 hisi_hba->cmd_hdr[i],
2477 HISI_SAS_QUEUE_SLOTS * queue_entry_size);
2480 static void hisi_sas_debugfs_snapshot_port_reg(struct hisi_hba *hisi_hba)
2482 const struct hisi_sas_debugfs_reg *port =
2483 hisi_hba->hw->debugfs_reg_port;
2488 for (phy_cnt = 0; phy_cnt < hisi_hba->n_phy; phy_cnt++) {
2489 databuf = (u32 *)hisi_hba->debugfs_port_reg[phy_cnt];
2490 for (i = 0; i < port->count; i++, databuf++) {
2491 offset = port->base_off + 4 * i;
2492 *databuf = port->read_port_reg(hisi_hba, phy_cnt,
2498 static void hisi_sas_debugfs_snapshot_global_reg(struct hisi_hba *hisi_hba)
2500 u32 *databuf = (u32 *)hisi_hba->debugfs_global_reg;
2501 const struct hisi_sas_debugfs_reg *global =
2502 hisi_hba->hw->debugfs_reg_global;
2505 for (i = 0; i < global->count; i++, databuf++)
2506 *databuf = global->read_global_reg(hisi_hba, 4 * i);
2509 static void hisi_sas_debugfs_snapshot_itct_reg(struct hisi_hba *hisi_hba)
2511 void *databuf = hisi_hba->debugfs_itct;
2512 struct hisi_sas_itct *itct;
2515 itct = hisi_hba->itct;
2517 for (i = 0; i < HISI_SAS_MAX_ITCT_ENTRIES; i++, itct++) {
2518 memcpy(databuf, itct, sizeof(struct hisi_sas_itct));
2519 databuf += sizeof(struct hisi_sas_itct);
2523 static void hisi_sas_debugfs_snapshot_iost_reg(struct hisi_hba *hisi_hba)
2525 int max_command_entries = hisi_hba->hw->max_command_entries;
2526 void *databuf = hisi_hba->debugfs_iost;
2527 struct hisi_sas_iost *iost;
2530 iost = hisi_hba->iost;
2532 for (i = 0; i < max_command_entries; i++, iost++) {
2533 memcpy(databuf, iost, sizeof(struct hisi_sas_iost));
2534 databuf += sizeof(struct hisi_sas_iost);
2539 hisi_sas_debugfs_to_reg_name(int off, int base_off,
2540 const struct hisi_sas_debugfs_reg_lu *lu)
2542 for (; lu->name; lu++) {
2543 if (off == lu->off - base_off)
2550 static void hisi_sas_debugfs_print_reg(u32 *regs_val, const void *ptr,
2553 const struct hisi_sas_debugfs_reg *reg = ptr;
2556 for (i = 0; i < reg->count; i++) {
2560 name = hisi_sas_debugfs_to_reg_name(off, reg->base_off,
2564 seq_printf(s, "0x%08x 0x%08x %s\n", off,
2567 seq_printf(s, "0x%08x 0x%08x\n", off,
2572 static int hisi_sas_debugfs_global_show(struct seq_file *s, void *p)
2574 struct hisi_hba *hisi_hba = s->private;
2575 const struct hisi_sas_hw *hw = hisi_hba->hw;
2576 const struct hisi_sas_debugfs_reg *reg_global = hw->debugfs_reg_global;
2578 hisi_sas_debugfs_print_reg(hisi_hba->debugfs_global_reg,
2584 static int hisi_sas_debugfs_global_open(struct inode *inode, struct file *filp)
2586 return single_open(filp, hisi_sas_debugfs_global_show,
2590 static const struct file_operations hisi_sas_debugfs_global_fops = {
2591 .open = hisi_sas_debugfs_global_open,
2593 .llseek = seq_lseek,
2594 .release = single_release,
2595 .owner = THIS_MODULE,
2598 static int hisi_sas_debugfs_port_show(struct seq_file *s, void *p)
2600 struct hisi_sas_phy *phy = s->private;
2601 struct hisi_hba *hisi_hba = phy->hisi_hba;
2602 const struct hisi_sas_hw *hw = hisi_hba->hw;
2603 const struct hisi_sas_debugfs_reg *reg_port = hw->debugfs_reg_port;
2604 u32 *databuf = hisi_hba->debugfs_port_reg[phy->sas_phy.id];
2606 hisi_sas_debugfs_print_reg(databuf, reg_port, s);
2611 static int hisi_sas_debugfs_port_open(struct inode *inode, struct file *filp)
2613 return single_open(filp, hisi_sas_debugfs_port_show, inode->i_private);
2616 static const struct file_operations hisi_sas_debugfs_port_fops = {
2617 .open = hisi_sas_debugfs_port_open,
2619 .llseek = seq_lseek,
2620 .release = single_release,
2621 .owner = THIS_MODULE,
2624 static int hisi_sas_show_row_64(struct seq_file *s, int index,
2625 int sz, __le64 *ptr)
2629 /* completion header size not fixed per HW version */
2630 seq_printf(s, "index %04d:\n\t", index);
2631 for (i = 1; i <= sz / 8; i++, ptr++) {
2632 seq_printf(s, " 0x%016llx", le64_to_cpu(*ptr));
2634 seq_puts(s, "\n\t");
2642 static int hisi_sas_show_row_32(struct seq_file *s, int index,
2643 int sz, __le32 *ptr)
2647 /* completion header size not fixed per HW version */
2648 seq_printf(s, "index %04d:\n\t", index);
2649 for (i = 1; i <= sz / 4; i++, ptr++) {
2651 seq_puts(s, "\n\t");
2658 static int hisi_sas_cq_show_slot(struct seq_file *s, int slot, void *cq_ptr)
2660 struct hisi_sas_cq *cq = cq_ptr;
2661 struct hisi_hba *hisi_hba = cq->hisi_hba;
2662 void *complete_queue = hisi_hba->debugfs_complete_hdr[cq->id];
2663 __le32 *complete_hdr = complete_queue +
2664 (hisi_hba->hw->complete_hdr_size * slot);
2666 return hisi_sas_show_row_32(s, slot,
2667 hisi_hba->hw->complete_hdr_size,
2671 static int hisi_sas_debugfs_cq_show(struct seq_file *s, void *p)
2673 struct hisi_sas_cq *cq = s->private;
2676 for (slot = 0; slot < HISI_SAS_QUEUE_SLOTS; slot++) {
2677 ret = hisi_sas_cq_show_slot(s, slot, cq);
2684 static int hisi_sas_debugfs_cq_open(struct inode *inode, struct file *filp)
2686 return single_open(filp, hisi_sas_debugfs_cq_show, inode->i_private);
2689 static const struct file_operations hisi_sas_debugfs_cq_fops = {
2690 .open = hisi_sas_debugfs_cq_open,
2692 .llseek = seq_lseek,
2693 .release = single_release,
2694 .owner = THIS_MODULE,
2697 static int hisi_sas_dq_show_slot(struct seq_file *s, int slot, void *dq_ptr)
2699 struct hisi_sas_dq *dq = dq_ptr;
2700 struct hisi_hba *hisi_hba = dq->hisi_hba;
2701 void *cmd_queue = hisi_hba->debugfs_cmd_hdr[dq->id];
2702 __le32 *cmd_hdr = cmd_queue +
2703 sizeof(struct hisi_sas_cmd_hdr) * slot;
2705 return hisi_sas_show_row_32(s, slot, sizeof(struct hisi_sas_cmd_hdr),
2709 static int hisi_sas_debugfs_dq_show(struct seq_file *s, void *p)
2713 for (slot = 0; slot < HISI_SAS_QUEUE_SLOTS; slot++) {
2714 ret = hisi_sas_dq_show_slot(s, slot, s->private);
2721 static int hisi_sas_debugfs_dq_open(struct inode *inode, struct file *filp)
2723 return single_open(filp, hisi_sas_debugfs_dq_show, inode->i_private);
2726 static const struct file_operations hisi_sas_debugfs_dq_fops = {
2727 .open = hisi_sas_debugfs_dq_open,
2729 .llseek = seq_lseek,
2730 .release = single_release,
2731 .owner = THIS_MODULE,
2734 static int hisi_sas_debugfs_iost_show(struct seq_file *s, void *p)
2736 struct hisi_hba *hisi_hba = s->private;
2737 struct hisi_sas_iost *debugfs_iost = hisi_hba->debugfs_iost;
2738 int i, ret, max_command_entries = hisi_hba->hw->max_command_entries;
2739 __le64 *iost = &debugfs_iost->qw0;
2741 for (i = 0; i < max_command_entries; i++, debugfs_iost++) {
2742 ret = hisi_sas_show_row_64(s, i, sizeof(*debugfs_iost),
2751 static int hisi_sas_debugfs_iost_open(struct inode *inode, struct file *filp)
2753 return single_open(filp, hisi_sas_debugfs_iost_show, inode->i_private);
2756 static const struct file_operations hisi_sas_debugfs_iost_fops = {
2757 .open = hisi_sas_debugfs_iost_open,
2759 .llseek = seq_lseek,
2760 .release = single_release,
2761 .owner = THIS_MODULE,
2764 static int hisi_sas_debugfs_itct_show(struct seq_file *s, void *p)
2767 struct hisi_hba *hisi_hba = s->private;
2768 struct hisi_sas_itct *debugfs_itct = hisi_hba->debugfs_itct;
2769 __le64 *itct = &debugfs_itct->qw0;
2771 for (i = 0; i < HISI_SAS_MAX_ITCT_ENTRIES; i++, debugfs_itct++) {
2772 ret = hisi_sas_show_row_64(s, i, sizeof(*debugfs_itct),
2781 static int hisi_sas_debugfs_itct_open(struct inode *inode, struct file *filp)
2783 return single_open(filp, hisi_sas_debugfs_itct_show, inode->i_private);
2786 static const struct file_operations hisi_sas_debugfs_itct_fops = {
2787 .open = hisi_sas_debugfs_itct_open,
2789 .llseek = seq_lseek,
2790 .release = single_release,
2791 .owner = THIS_MODULE,
2794 static void hisi_sas_debugfs_create_files(struct hisi_hba *hisi_hba)
2796 struct dentry *dump_dentry;
2797 struct dentry *dentry;
2803 /* Create dump dir inside device dir */
2804 dump_dentry = debugfs_create_dir("dump", hisi_hba->debugfs_dir);
2805 hisi_hba->debugfs_dump_dentry = dump_dentry;
2807 debugfs_create_file("global", 0400, dump_dentry, hisi_hba,
2808 &hisi_sas_debugfs_global_fops);
2810 /* Create port dir and files */
2811 dentry = debugfs_create_dir("port", dump_dentry);
2812 for (p = 0; p < hisi_hba->n_phy; p++) {
2813 snprintf(name, 256, "%d", p);
2815 debugfs_create_file(name, 0400, dentry, &hisi_hba->phy[p],
2816 &hisi_sas_debugfs_port_fops);
2819 /* Create CQ dir and files */
2820 dentry = debugfs_create_dir("cq", dump_dentry);
2821 for (c = 0; c < hisi_hba->queue_count; c++) {
2822 snprintf(name, 256, "%d", c);
2824 debugfs_create_file(name, 0400, dentry, &hisi_hba->cq[c],
2825 &hisi_sas_debugfs_cq_fops);
2828 /* Create DQ dir and files */
2829 dentry = debugfs_create_dir("dq", dump_dentry);
2830 for (d = 0; d < hisi_hba->queue_count; d++) {
2831 snprintf(name, 256, "%d", d);
2833 debugfs_create_file(name, 0400, dentry, &hisi_hba->dq[d],
2834 &hisi_sas_debugfs_dq_fops);
2837 debugfs_create_file("iost", 0400, dump_dentry, hisi_hba,
2838 &hisi_sas_debugfs_iost_fops);
2840 debugfs_create_file("itct", 0400, dump_dentry, hisi_hba,
2841 &hisi_sas_debugfs_itct_fops);
2846 static void hisi_sas_debugfs_snapshot_regs(struct hisi_hba *hisi_hba)
2848 hisi_hba->hw->snapshot_prepare(hisi_hba);
2850 hisi_sas_debugfs_snapshot_global_reg(hisi_hba);
2851 hisi_sas_debugfs_snapshot_port_reg(hisi_hba);
2852 hisi_sas_debugfs_snapshot_cq_reg(hisi_hba);
2853 hisi_sas_debugfs_snapshot_dq_reg(hisi_hba);
2854 hisi_sas_debugfs_snapshot_itct_reg(hisi_hba);
2855 hisi_sas_debugfs_snapshot_iost_reg(hisi_hba);
2857 hisi_sas_debugfs_create_files(hisi_hba);
2859 hisi_hba->hw->snapshot_restore(hisi_hba);
2862 void hisi_sas_debugfs_work_handler(struct work_struct *work)
2864 struct hisi_hba *hisi_hba =
2865 container_of(work, struct hisi_hba, debugfs_work);
2867 if (hisi_hba->debugfs_snapshot)
2869 hisi_hba->debugfs_snapshot = true;
2871 hisi_sas_debugfs_snapshot_regs(hisi_hba);
2873 EXPORT_SYMBOL_GPL(hisi_sas_debugfs_work_handler);
2875 void hisi_sas_debugfs_init(struct hisi_hba *hisi_hba)
2877 int max_command_entries = hisi_hba->hw->max_command_entries;
2878 struct device *dev = hisi_hba->dev;
2882 hisi_hba->debugfs_dir = debugfs_create_dir(dev_name(dev),
2883 hisi_sas_debugfs_dir);
2885 /* Alloc buffer for global */
2886 sz = hisi_hba->hw->debugfs_reg_global->count * 4;
2887 hisi_hba->debugfs_global_reg =
2888 devm_kmalloc(dev, sz, GFP_KERNEL);
2890 if (!hisi_hba->debugfs_global_reg)
2893 /* Alloc buffer for port */
2894 sz = hisi_hba->hw->debugfs_reg_port->count * 4;
2895 for (p = 0; p < hisi_hba->n_phy; p++) {
2896 hisi_hba->debugfs_port_reg[p] =
2897 devm_kmalloc(dev, sz, GFP_KERNEL);
2899 if (!hisi_hba->debugfs_port_reg[p])
2903 /* Alloc buffer for cq */
2904 sz = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
2905 for (c = 0; c < hisi_hba->queue_count; c++) {
2906 hisi_hba->debugfs_complete_hdr[c] =
2907 devm_kmalloc(dev, sz, GFP_KERNEL);
2909 if (!hisi_hba->debugfs_complete_hdr[c])
2913 /* Alloc buffer for dq */
2914 sz = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
2915 for (d = 0; d < hisi_hba->queue_count; d++) {
2916 hisi_hba->debugfs_cmd_hdr[d] =
2917 devm_kmalloc(dev, sz, GFP_KERNEL);
2919 if (!hisi_hba->debugfs_cmd_hdr[d])
2923 /* Alloc buffer for iost */
2924 sz = max_command_entries * sizeof(struct hisi_sas_iost);
2926 hisi_hba->debugfs_iost = devm_kmalloc(dev, sz, GFP_KERNEL);
2927 if (!hisi_hba->debugfs_iost)
2930 /* Alloc buffer for itct */
2931 /* New memory allocation must be locate before itct */
2932 sz = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
2934 hisi_hba->debugfs_itct = devm_kmalloc(dev, sz, GFP_KERNEL);
2935 if (!hisi_hba->debugfs_itct)
2940 devm_kfree(dev, hisi_hba->debugfs_iost);
2942 for (i = 0; i < d; i++)
2943 devm_kfree(dev, hisi_hba->debugfs_cmd_hdr[i]);
2945 for (i = 0; i < c; i++)
2946 devm_kfree(dev, hisi_hba->debugfs_complete_hdr[i]);
2948 for (i = 0; i < p; i++)
2949 devm_kfree(dev, hisi_hba->debugfs_port_reg[i]);
2950 devm_kfree(dev, hisi_hba->debugfs_global_reg);
2952 debugfs_remove_recursive(hisi_hba->debugfs_dir);
2953 dev_dbg(dev, "failed to init debugfs!\n");
2955 EXPORT_SYMBOL_GPL(hisi_sas_debugfs_init);
2957 void hisi_sas_debugfs_exit(struct hisi_hba *hisi_hba)
2959 debugfs_remove_recursive(hisi_hba->debugfs_dir);
2961 EXPORT_SYMBOL_GPL(hisi_sas_debugfs_exit);
2963 int hisi_sas_remove(struct platform_device *pdev)
2965 struct sas_ha_struct *sha = platform_get_drvdata(pdev);
2966 struct hisi_hba *hisi_hba = sha->lldd_ha;
2967 struct Scsi_Host *shost = sha->core.shost;
2969 if (timer_pending(&hisi_hba->timer))
2970 del_timer(&hisi_hba->timer);
2972 sas_unregister_ha(sha);
2973 sas_remove_host(sha->core.shost);
2975 hisi_sas_free(hisi_hba);
2976 scsi_host_put(shost);
2979 EXPORT_SYMBOL_GPL(hisi_sas_remove);
2981 bool hisi_sas_debugfs_enable;
2982 EXPORT_SYMBOL_GPL(hisi_sas_debugfs_enable);
2983 module_param_named(debugfs_enable, hisi_sas_debugfs_enable, bool, 0444);
2984 MODULE_PARM_DESC(hisi_sas_debugfs_enable, "Enable driver debugfs (default disabled)");
2986 static __init int hisi_sas_init(void)
2988 hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops);
2992 if (hisi_sas_debugfs_enable)
2993 hisi_sas_debugfs_dir = debugfs_create_dir("hisi_sas", NULL);
2998 static __exit void hisi_sas_exit(void)
3000 sas_release_transport(hisi_sas_stt);
3002 debugfs_remove(hisi_sas_debugfs_dir);
3005 module_init(hisi_sas_init);
3006 module_exit(hisi_sas_exit);
3008 MODULE_LICENSE("GPL");
3009 MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
3010 MODULE_DESCRIPTION("HISILICON SAS controller driver");
3011 MODULE_ALIAS("platform:" DRV_NAME);