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);
26 static struct hisi_hba *dev_to_hisi_hba(struct domain_device *device)
28 return device->port->ha->lldd_ha;
31 struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port)
33 return container_of(sas_port, struct hisi_sas_port, sas_port);
35 EXPORT_SYMBOL_GPL(to_hisi_sas_port);
37 static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx)
39 void *bitmap = hisi_hba->slot_index_tags;
41 clear_bit(slot_idx, bitmap);
44 static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx)
46 hisi_sas_slot_index_clear(hisi_hba, slot_idx);
49 static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx)
51 void *bitmap = hisi_hba->slot_index_tags;
53 set_bit(slot_idx, bitmap);
56 static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba, int *slot_idx)
59 void *bitmap = hisi_hba->slot_index_tags;
61 index = find_first_zero_bit(bitmap, hisi_hba->slot_index_count);
62 if (index >= hisi_hba->slot_index_count)
63 return -SAS_QUEUE_FULL;
64 hisi_sas_slot_index_set(hisi_hba, index);
69 static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba)
73 for (i = 0; i < hisi_hba->slot_index_count; ++i)
74 hisi_sas_slot_index_clear(hisi_hba, i);
77 void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task,
78 struct hisi_sas_slot *slot)
80 struct device *dev = &hisi_hba->pdev->dev;
81 struct domain_device *device = task->dev;
82 struct hisi_sas_device *sas_dev = device->lldd_dev;
87 if (!sas_protocol_ata(task->task_proto))
89 dma_unmap_sg(dev, task->scatter, slot->n_elem,
92 if (slot->command_table)
93 dma_pool_free(hisi_hba->command_table_pool,
94 slot->command_table, slot->command_table_dma);
96 if (slot->status_buffer)
97 dma_pool_free(hisi_hba->status_buffer_pool,
98 slot->status_buffer, slot->status_buffer_dma);
101 dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page,
104 list_del_init(&slot->entry);
105 task->lldd_task = NULL;
108 hisi_sas_slot_index_free(hisi_hba, slot->idx);
110 atomic64_dec(&sas_dev->running_req);
111 /* slot memory is fully zeroed when it is reused */
113 EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free);
115 static int hisi_sas_task_prep_smp(struct hisi_hba *hisi_hba,
116 struct hisi_sas_slot *slot)
118 return hisi_hba->hw->prep_smp(hisi_hba, slot);
121 static int hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba,
122 struct hisi_sas_slot *slot, int is_tmf,
123 struct hisi_sas_tmf_task *tmf)
125 return hisi_hba->hw->prep_ssp(hisi_hba, slot, is_tmf, tmf);
128 static int hisi_sas_task_prep_ata(struct hisi_hba *hisi_hba,
129 struct hisi_sas_slot *slot)
131 return hisi_hba->hw->prep_stp(hisi_hba, slot);
134 static int hisi_sas_task_prep_abort(struct hisi_hba *hisi_hba,
135 struct hisi_sas_slot *slot,
136 int device_id, int abort_flag, int tag_to_abort)
138 return hisi_hba->hw->prep_abort(hisi_hba, slot,
139 device_id, abort_flag, tag_to_abort);
143 * This function will issue an abort TMF regardless of whether the
144 * task is in the sdev or not. Then it will do the task complete
145 * cleanup and callbacks.
147 static void hisi_sas_slot_abort(struct work_struct *work)
149 struct hisi_sas_slot *abort_slot =
150 container_of(work, struct hisi_sas_slot, abort_slot);
151 struct sas_task *task = abort_slot->task;
152 struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev);
153 struct scsi_cmnd *cmnd = task->uldd_task;
154 struct hisi_sas_tmf_task tmf_task;
156 struct device *dev = &hisi_hba->pdev->dev;
157 int tag = abort_slot->idx;
160 if (!(task->task_proto & SAS_PROTOCOL_SSP)) {
161 dev_err(dev, "cannot abort slot for non-ssp task\n");
165 int_to_scsilun(cmnd->device->lun, &lun);
166 tmf_task.tmf = TMF_ABORT_TASK;
167 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
169 hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun, &tmf_task);
171 /* Do cleanup for this task */
172 spin_lock_irqsave(&hisi_hba->lock, flags);
173 hisi_sas_slot_task_free(hisi_hba, task, abort_slot);
174 spin_unlock_irqrestore(&hisi_hba->lock, flags);
176 task->task_done(task);
179 static int hisi_sas_task_prep(struct sas_task *task, struct hisi_hba *hisi_hba,
180 int is_tmf, struct hisi_sas_tmf_task *tmf,
183 struct domain_device *device = task->dev;
184 struct hisi_sas_device *sas_dev = device->lldd_dev;
185 struct hisi_sas_port *port;
186 struct hisi_sas_slot *slot;
187 struct hisi_sas_cmd_hdr *cmd_hdr_base;
188 struct asd_sas_port *sas_port = device->port;
189 struct device *dev = &hisi_hba->pdev->dev;
190 int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx;
194 struct task_status_struct *ts = &task->task_status;
196 ts->resp = SAS_TASK_UNDELIVERED;
197 ts->stat = SAS_PHY_DOWN;
199 * libsas will use dev->port, should
200 * not call task_done for sata
202 if (device->dev_type != SAS_SATA_DEV)
203 task->task_done(task);
207 if (DEV_IS_GONE(sas_dev)) {
209 dev_info(dev, "task prep: device %llu not ready\n",
212 dev_info(dev, "task prep: device %016llx not ready\n",
213 SAS_ADDR(device->sas_addr));
218 port = to_hisi_sas_port(sas_port);
219 if (port && !port->port_attached) {
220 dev_info(dev, "task prep: %s port%d not attach device\n",
221 (sas_protocol_ata(task->task_proto)) ?
228 if (!sas_protocol_ata(task->task_proto)) {
229 if (task->num_scatter) {
230 n_elem = dma_map_sg(dev, task->scatter,
231 task->num_scatter, task->data_dir);
238 n_elem = task->num_scatter;
240 if (hisi_hba->hw->slot_index_alloc)
241 rc = hisi_hba->hw->slot_index_alloc(hisi_hba, &slot_idx,
244 rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx);
247 rc = hisi_hba->hw->get_free_slot(hisi_hba, sas_dev->device_id,
248 &dlvry_queue, &dlvry_queue_slot);
252 slot = &hisi_hba->slot_info[slot_idx];
253 memset(slot, 0, sizeof(struct hisi_sas_slot));
255 slot->idx = slot_idx;
256 slot->n_elem = n_elem;
257 slot->dlvry_queue = dlvry_queue;
258 slot->dlvry_queue_slot = dlvry_queue_slot;
259 cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
260 slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
263 task->lldd_task = slot;
264 INIT_WORK(&slot->abort_slot, hisi_sas_slot_abort);
266 slot->status_buffer = dma_pool_alloc(hisi_hba->status_buffer_pool,
268 &slot->status_buffer_dma);
269 if (!slot->status_buffer) {
271 goto err_out_slot_buf;
273 memset(slot->status_buffer, 0, HISI_SAS_STATUS_BUF_SZ);
275 slot->command_table = dma_pool_alloc(hisi_hba->command_table_pool,
277 &slot->command_table_dma);
278 if (!slot->command_table) {
280 goto err_out_status_buf;
282 memset(slot->command_table, 0, HISI_SAS_COMMAND_TABLE_SZ);
283 memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
285 switch (task->task_proto) {
286 case SAS_PROTOCOL_SMP:
287 rc = hisi_sas_task_prep_smp(hisi_hba, slot);
289 case SAS_PROTOCOL_SSP:
290 rc = hisi_sas_task_prep_ssp(hisi_hba, slot, is_tmf, tmf);
292 case SAS_PROTOCOL_SATA:
293 case SAS_PROTOCOL_STP:
294 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
295 rc = hisi_sas_task_prep_ata(hisi_hba, slot);
298 dev_err(dev, "task prep: unknown/unsupported proto (0x%x)\n",
305 dev_err(dev, "task prep: rc = 0x%x\n", rc);
308 goto err_out_command_table;
311 list_add_tail(&slot->entry, &sas_dev->list);
312 spin_lock_irqsave(&task->task_state_lock, flags);
313 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
314 spin_unlock_irqrestore(&task->task_state_lock, flags);
316 hisi_hba->slot_prep = slot;
318 atomic64_inc(&sas_dev->running_req);
324 dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page,
326 err_out_command_table:
327 dma_pool_free(hisi_hba->command_table_pool, slot->command_table,
328 slot->command_table_dma);
330 dma_pool_free(hisi_hba->status_buffer_pool, slot->status_buffer,
331 slot->status_buffer_dma);
333 /* Nothing to be done */
335 hisi_sas_slot_index_free(hisi_hba, slot_idx);
337 dev_err(dev, "task prep: failed[%d]!\n", rc);
338 if (!sas_protocol_ata(task->task_proto))
340 dma_unmap_sg(dev, task->scatter, n_elem,
346 static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags,
347 int is_tmf, struct hisi_sas_tmf_task *tmf)
352 struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev);
353 struct device *dev = &hisi_hba->pdev->dev;
355 if (unlikely(test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)))
358 /* protect task_prep and start_delivery sequence */
359 spin_lock_irqsave(&hisi_hba->lock, flags);
360 rc = hisi_sas_task_prep(task, hisi_hba, is_tmf, tmf, &pass);
362 dev_err(dev, "task exec: failed[%d]!\n", rc);
365 hisi_hba->hw->start_delivery(hisi_hba);
366 spin_unlock_irqrestore(&hisi_hba->lock, flags);
371 static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no)
373 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
374 struct asd_sas_phy *sas_phy = &phy->sas_phy;
375 struct sas_ha_struct *sas_ha;
377 if (!phy->phy_attached)
380 sas_ha = &hisi_hba->sha;
381 sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE);
384 struct sas_phy *sphy = sas_phy->phy;
386 sphy->negotiated_linkrate = sas_phy->linkrate;
387 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
388 sphy->maximum_linkrate_hw =
389 hisi_hba->hw->phy_get_max_linkrate();
390 if (sphy->minimum_linkrate == SAS_LINK_RATE_UNKNOWN)
391 sphy->minimum_linkrate = phy->minimum_linkrate;
393 if (sphy->maximum_linkrate == SAS_LINK_RATE_UNKNOWN)
394 sphy->maximum_linkrate = phy->maximum_linkrate;
397 if (phy->phy_type & PORT_TYPE_SAS) {
398 struct sas_identify_frame *id;
400 id = (struct sas_identify_frame *)phy->frame_rcvd;
401 id->dev_type = phy->identify.device_type;
402 id->initiator_bits = SAS_PROTOCOL_ALL;
403 id->target_bits = phy->identify.target_port_protocols;
404 } else if (phy->phy_type & PORT_TYPE_SATA) {
408 sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
409 sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED);
412 static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device)
414 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
415 struct hisi_sas_device *sas_dev = NULL;
418 spin_lock(&hisi_hba->lock);
419 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
420 if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) {
421 hisi_hba->devices[i].device_id = i;
422 sas_dev = &hisi_hba->devices[i];
423 sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
424 sas_dev->dev_type = device->dev_type;
425 sas_dev->hisi_hba = hisi_hba;
426 sas_dev->sas_device = device;
427 INIT_LIST_HEAD(&hisi_hba->devices[i].list);
431 spin_unlock(&hisi_hba->lock);
436 static int hisi_sas_dev_found(struct domain_device *device)
438 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
439 struct domain_device *parent_dev = device->parent;
440 struct hisi_sas_device *sas_dev;
441 struct device *dev = &hisi_hba->pdev->dev;
443 if (hisi_hba->hw->alloc_dev)
444 sas_dev = hisi_hba->hw->alloc_dev(device);
446 sas_dev = hisi_sas_alloc_dev(device);
448 dev_err(dev, "fail alloc dev: max support %d devices\n",
449 HISI_SAS_MAX_DEVICES);
453 device->lldd_dev = sas_dev;
454 hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
456 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
458 u8 phy_num = parent_dev->ex_dev.num_phys;
461 for (phy_no = 0; phy_no < phy_num; phy_no++) {
462 phy = &parent_dev->ex_dev.ex_phy[phy_no];
463 if (SAS_ADDR(phy->attached_sas_addr) ==
464 SAS_ADDR(device->sas_addr)) {
465 sas_dev->attached_phy = phy_no;
470 if (phy_no == phy_num) {
471 dev_info(dev, "dev found: no attached "
472 "dev:%016llx at ex:%016llx\n",
473 SAS_ADDR(device->sas_addr),
474 SAS_ADDR(parent_dev->sas_addr));
482 static int hisi_sas_slave_configure(struct scsi_device *sdev)
484 struct domain_device *dev = sdev_to_domain_dev(sdev);
485 int ret = sas_slave_configure(sdev);
489 if (!dev_is_sata(dev))
490 sas_change_queue_depth(sdev, 64);
495 static void hisi_sas_scan_start(struct Scsi_Host *shost)
497 struct hisi_hba *hisi_hba = shost_priv(shost);
499 hisi_hba->hw->phys_init(hisi_hba);
502 static int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time)
504 struct hisi_hba *hisi_hba = shost_priv(shost);
505 struct sas_ha_struct *sha = &hisi_hba->sha;
507 /* Wait for PHY up interrupt to occur */
515 static void hisi_sas_phyup_work(struct work_struct *work)
517 struct hisi_sas_phy *phy =
518 container_of(work, struct hisi_sas_phy, phyup_ws);
519 struct hisi_hba *hisi_hba = phy->hisi_hba;
520 struct asd_sas_phy *sas_phy = &phy->sas_phy;
521 int phy_no = sas_phy->id;
523 hisi_hba->hw->sl_notify(hisi_hba, phy_no); /* This requires a sleep */
524 hisi_sas_bytes_dmaed(hisi_hba, phy_no);
527 static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no)
529 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
530 struct asd_sas_phy *sas_phy = &phy->sas_phy;
532 phy->hisi_hba = hisi_hba;
534 init_timer(&phy->timer);
535 sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0;
536 sas_phy->class = SAS;
537 sas_phy->iproto = SAS_PROTOCOL_ALL;
539 sas_phy->type = PHY_TYPE_PHYSICAL;
540 sas_phy->role = PHY_ROLE_INITIATOR;
541 sas_phy->oob_mode = OOB_NOT_CONNECTED;
542 sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
543 sas_phy->id = phy_no;
544 sas_phy->sas_addr = &hisi_hba->sas_addr[0];
545 sas_phy->frame_rcvd = &phy->frame_rcvd[0];
546 sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata;
547 sas_phy->lldd_phy = phy;
549 INIT_WORK(&phy->phyup_ws, hisi_sas_phyup_work);
552 static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy)
554 struct sas_ha_struct *sas_ha = sas_phy->ha;
555 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
556 struct hisi_sas_phy *phy = sas_phy->lldd_phy;
557 struct asd_sas_port *sas_port = sas_phy->port;
558 struct hisi_sas_port *port = to_hisi_sas_port(sas_port);
564 spin_lock_irqsave(&hisi_hba->lock, flags);
565 port->port_attached = 1;
566 port->id = phy->port_id;
568 sas_port->lldd_port = port;
569 spin_unlock_irqrestore(&hisi_hba->lock, flags);
572 static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba,
573 struct sas_task *task,
574 struct hisi_sas_slot *slot)
576 struct task_status_struct *ts;
582 ts = &task->task_status;
584 ts->resp = SAS_TASK_COMPLETE;
585 ts->stat = SAS_ABORTED_TASK;
586 spin_lock_irqsave(&task->task_state_lock, flags);
587 task->task_state_flags &=
588 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
589 task->task_state_flags |= SAS_TASK_STATE_DONE;
590 spin_unlock_irqrestore(&task->task_state_lock, flags);
592 hisi_sas_slot_task_free(hisi_hba, task, slot);
595 /* hisi_hba.lock should be locked */
596 static void hisi_sas_release_task(struct hisi_hba *hisi_hba,
597 struct domain_device *device)
599 struct hisi_sas_slot *slot, *slot2;
600 struct hisi_sas_device *sas_dev = device->lldd_dev;
602 list_for_each_entry_safe(slot, slot2, &sas_dev->list, entry)
603 hisi_sas_do_release_task(hisi_hba, slot->task, slot);
606 static void hisi_sas_release_tasks(struct hisi_hba *hisi_hba)
608 struct hisi_sas_device *sas_dev;
609 struct domain_device *device;
612 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
613 sas_dev = &hisi_hba->devices[i];
614 device = sas_dev->sas_device;
616 if ((sas_dev->dev_type == SAS_PHY_UNUSED) ||
620 hisi_sas_release_task(hisi_hba, device);
624 static void hisi_sas_dev_gone(struct domain_device *device)
626 struct hisi_sas_device *sas_dev = device->lldd_dev;
627 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
628 struct device *dev = &hisi_hba->pdev->dev;
629 u64 dev_id = sas_dev->device_id;
631 dev_info(dev, "found dev[%lld:%x] is gone\n",
632 sas_dev->device_id, sas_dev->dev_type);
634 hisi_sas_internal_task_abort(hisi_hba, device,
635 HISI_SAS_INT_ABT_DEV, 0);
637 hisi_hba->hw->free_device(hisi_hba, sas_dev);
638 device->lldd_dev = NULL;
639 memset(sas_dev, 0, sizeof(*sas_dev));
640 sas_dev->device_id = dev_id;
641 sas_dev->dev_type = SAS_PHY_UNUSED;
642 sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
645 static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
647 return hisi_sas_task_exec(task, gfp_flags, 0, NULL);
650 static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
653 struct sas_ha_struct *sas_ha = sas_phy->ha;
654 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
655 int phy_no = sas_phy->id;
658 case PHY_FUNC_HARD_RESET:
659 hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no);
662 case PHY_FUNC_LINK_RESET:
663 hisi_hba->hw->phy_disable(hisi_hba, phy_no);
665 hisi_hba->hw->phy_enable(hisi_hba, phy_no);
668 case PHY_FUNC_DISABLE:
669 hisi_hba->hw->phy_disable(hisi_hba, phy_no);
672 case PHY_FUNC_SET_LINK_RATE:
673 hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, funcdata);
676 case PHY_FUNC_RELEASE_SPINUP_HOLD:
683 static void hisi_sas_task_done(struct sas_task *task)
685 if (!del_timer(&task->slow_task->timer))
687 complete(&task->slow_task->completion);
690 static void hisi_sas_tmf_timedout(unsigned long data)
692 struct sas_task *task = (struct sas_task *)data;
694 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
695 complete(&task->slow_task->completion);
698 #define TASK_TIMEOUT 20
700 static int hisi_sas_exec_internal_tmf_task(struct domain_device *device,
701 void *parameter, u32 para_len,
702 struct hisi_sas_tmf_task *tmf)
704 struct hisi_sas_device *sas_dev = device->lldd_dev;
705 struct hisi_hba *hisi_hba = sas_dev->hisi_hba;
706 struct device *dev = &hisi_hba->pdev->dev;
707 struct sas_task *task;
710 for (retry = 0; retry < TASK_RETRY; retry++) {
711 task = sas_alloc_slow_task(GFP_KERNEL);
716 task->task_proto = device->tproto;
718 if (dev_is_sata(device)) {
719 task->ata_task.device_control_reg_update = 1;
720 memcpy(&task->ata_task.fis, parameter, para_len);
722 memcpy(&task->ssp_task, parameter, para_len);
724 task->task_done = hisi_sas_task_done;
726 task->slow_task->timer.data = (unsigned long) task;
727 task->slow_task->timer.function = hisi_sas_tmf_timedout;
728 task->slow_task->timer.expires = jiffies + TASK_TIMEOUT*HZ;
729 add_timer(&task->slow_task->timer);
731 res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf);
734 del_timer(&task->slow_task->timer);
735 dev_err(dev, "abort tmf: executing internal task failed: %d\n",
740 wait_for_completion(&task->slow_task->completion);
741 res = TMF_RESP_FUNC_FAILED;
742 /* Even TMF timed out, return direct. */
743 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
744 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
745 dev_err(dev, "abort tmf: TMF task timeout\n");
750 if (task->task_status.resp == SAS_TASK_COMPLETE &&
751 task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
752 res = TMF_RESP_FUNC_COMPLETE;
756 if (task->task_status.resp == SAS_TASK_COMPLETE &&
757 task->task_status.stat == TMF_RESP_FUNC_SUCC) {
758 res = TMF_RESP_FUNC_SUCC;
762 if (task->task_status.resp == SAS_TASK_COMPLETE &&
763 task->task_status.stat == SAS_DATA_UNDERRUN) {
764 /* no error, but return the number of bytes of
767 dev_warn(dev, "abort tmf: task to dev %016llx "
768 "resp: 0x%x sts 0x%x underrun\n",
769 SAS_ADDR(device->sas_addr),
770 task->task_status.resp,
771 task->task_status.stat);
772 res = task->task_status.residual;
776 if (task->task_status.resp == SAS_TASK_COMPLETE &&
777 task->task_status.stat == SAS_DATA_OVERRUN) {
778 dev_warn(dev, "abort tmf: blocked task error\n");
783 dev_warn(dev, "abort tmf: task to dev "
784 "%016llx resp: 0x%x status 0x%x\n",
785 SAS_ADDR(device->sas_addr), task->task_status.resp,
786 task->task_status.stat);
791 if (retry == TASK_RETRY)
792 dev_warn(dev, "abort tmf: executing internal task failed!\n");
797 static void hisi_sas_fill_ata_reset_cmd(struct ata_device *dev,
798 bool reset, int pmp, u8 *fis)
800 struct ata_taskfile tf;
802 ata_tf_init(dev, &tf);
807 tf.command = ATA_CMD_DEV_RESET;
808 ata_tf_to_fis(&tf, pmp, 0, fis);
811 static int hisi_sas_softreset_ata_disk(struct domain_device *device)
814 struct ata_port *ap = device->sata_dev.ap;
815 struct ata_link *link;
816 int rc = TMF_RESP_FUNC_FAILED;
817 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
818 struct device *dev = &hisi_hba->pdev->dev;
819 int s = sizeof(struct host_to_dev_fis);
822 ata_for_each_link(link, ap, EDGE) {
823 int pmp = sata_srst_pmp(link);
825 hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis);
826 rc = hisi_sas_exec_internal_tmf_task(device, fis, s, NULL);
827 if (rc != TMF_RESP_FUNC_COMPLETE)
831 if (rc == TMF_RESP_FUNC_COMPLETE) {
832 ata_for_each_link(link, ap, EDGE) {
833 int pmp = sata_srst_pmp(link);
835 hisi_sas_fill_ata_reset_cmd(link->device, 0, pmp, fis);
836 rc = hisi_sas_exec_internal_tmf_task(device, fis,
838 if (rc != TMF_RESP_FUNC_COMPLETE)
839 dev_err(dev, "ata disk de-reset failed\n");
842 dev_err(dev, "ata disk reset failed\n");
845 if (rc == TMF_RESP_FUNC_COMPLETE) {
846 spin_lock_irqsave(&hisi_hba->lock, flags);
847 hisi_sas_release_task(hisi_hba, device);
848 spin_unlock_irqrestore(&hisi_hba->lock, flags);
854 static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device,
855 u8 *lun, struct hisi_sas_tmf_task *tmf)
857 struct sas_ssp_task ssp_task;
859 if (!(device->tproto & SAS_PROTOCOL_SSP))
860 return TMF_RESP_FUNC_ESUPP;
862 memcpy(ssp_task.LUN, lun, 8);
864 return hisi_sas_exec_internal_tmf_task(device, &ssp_task,
865 sizeof(ssp_task), tmf);
868 static int hisi_sas_controller_reset(struct hisi_hba *hisi_hba)
872 if (!hisi_hba->hw->soft_reset)
875 if (!test_and_set_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)) {
876 struct device *dev = &hisi_hba->pdev->dev;
877 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
880 dev_dbg(dev, "controller reset begins!\n");
881 scsi_block_requests(hisi_hba->shost);
882 rc = hisi_hba->hw->soft_reset(hisi_hba);
884 dev_warn(dev, "controller reset failed (%d)\n", rc);
887 spin_lock_irqsave(&hisi_hba->lock, flags);
888 hisi_sas_release_tasks(hisi_hba);
889 spin_unlock_irqrestore(&hisi_hba->lock, flags);
891 sas_ha->notify_ha_event(sas_ha, HAE_RESET);
892 dev_dbg(dev, "controller reset successful!\n");
897 scsi_unblock_requests(hisi_hba->shost);
898 clear_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags);
902 static int hisi_sas_abort_task(struct sas_task *task)
905 struct hisi_sas_tmf_task tmf_task;
906 struct domain_device *device = task->dev;
907 struct hisi_sas_device *sas_dev = device->lldd_dev;
908 struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev);
909 struct device *dev = &hisi_hba->pdev->dev;
910 int rc = TMF_RESP_FUNC_FAILED;
914 dev_warn(dev, "Device has been removed\n");
915 return TMF_RESP_FUNC_FAILED;
918 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
919 rc = TMF_RESP_FUNC_COMPLETE;
923 sas_dev->dev_status = HISI_SAS_DEV_EH;
924 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
925 struct scsi_cmnd *cmnd = task->uldd_task;
926 struct hisi_sas_slot *slot = task->lldd_task;
930 int_to_scsilun(cmnd->device->lun, &lun);
931 tmf_task.tmf = TMF_ABORT_TASK;
932 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
934 rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun,
937 rc2 = hisi_sas_internal_task_abort(hisi_hba, device,
938 HISI_SAS_INT_ABT_CMD, tag);
940 * If the TMF finds that the IO is not in the device and also
941 * the internal abort does not succeed, then it is safe to
943 * Note: if the internal abort succeeds then the slot
944 * will have already been completed
946 if (rc == TMF_RESP_FUNC_COMPLETE && rc2 != TMF_RESP_FUNC_SUCC) {
947 if (task->lldd_task) {
948 spin_lock_irqsave(&hisi_hba->lock, flags);
949 hisi_sas_do_release_task(hisi_hba, task, slot);
950 spin_unlock_irqrestore(&hisi_hba->lock, flags);
953 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
954 task->task_proto & SAS_PROTOCOL_STP) {
955 if (task->dev->dev_type == SAS_SATA_DEV) {
956 hisi_sas_internal_task_abort(hisi_hba, device,
957 HISI_SAS_INT_ABT_DEV, 0);
958 rc = hisi_sas_softreset_ata_disk(device);
960 } else if (task->task_proto & SAS_PROTOCOL_SMP) {
962 struct hisi_sas_slot *slot = task->lldd_task;
965 rc = hisi_sas_internal_task_abort(hisi_hba, device,
966 HISI_SAS_INT_ABT_CMD, tag);
967 if (rc == TMF_RESP_FUNC_FAILED) {
968 spin_lock_irqsave(&hisi_hba->lock, flags);
969 hisi_sas_do_release_task(hisi_hba, task, slot);
970 spin_unlock_irqrestore(&hisi_hba->lock, flags);
975 if (rc != TMF_RESP_FUNC_COMPLETE)
976 dev_notice(dev, "abort task: rc=%d\n", rc);
980 static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun)
982 struct hisi_sas_tmf_task tmf_task;
983 int rc = TMF_RESP_FUNC_FAILED;
985 tmf_task.tmf = TMF_ABORT_TASK_SET;
986 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
991 static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun)
993 int rc = TMF_RESP_FUNC_FAILED;
994 struct hisi_sas_tmf_task tmf_task;
996 tmf_task.tmf = TMF_CLEAR_ACA;
997 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1002 static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device)
1004 struct sas_phy *phy = sas_get_local_phy(device);
1005 int rc, reset_type = (device->dev_type == SAS_SATA_DEV ||
1006 (device->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
1007 rc = sas_phy_reset(phy, reset_type);
1008 sas_put_local_phy(phy);
1013 static int hisi_sas_I_T_nexus_reset(struct domain_device *device)
1015 struct hisi_sas_device *sas_dev = device->lldd_dev;
1016 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1017 unsigned long flags;
1018 int rc = TMF_RESP_FUNC_FAILED;
1020 if (sas_dev->dev_status != HISI_SAS_DEV_EH)
1021 return TMF_RESP_FUNC_FAILED;
1022 sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
1024 rc = hisi_sas_debug_I_T_nexus_reset(device);
1026 if (rc == TMF_RESP_FUNC_COMPLETE) {
1027 spin_lock_irqsave(&hisi_hba->lock, flags);
1028 hisi_sas_release_task(hisi_hba, device);
1029 spin_unlock_irqrestore(&hisi_hba->lock, flags);
1034 static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun)
1036 struct hisi_sas_device *sas_dev = device->lldd_dev;
1037 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
1038 struct device *dev = &hisi_hba->pdev->dev;
1039 unsigned long flags;
1040 int rc = TMF_RESP_FUNC_FAILED;
1042 sas_dev->dev_status = HISI_SAS_DEV_EH;
1043 if (dev_is_sata(device)) {
1044 struct sas_phy *phy;
1046 /* Clear internal IO and then hardreset */
1047 rc = hisi_sas_internal_task_abort(hisi_hba, device,
1048 HISI_SAS_INT_ABT_DEV, 0);
1049 if (rc == TMF_RESP_FUNC_FAILED)
1052 phy = sas_get_local_phy(device);
1054 rc = sas_phy_reset(phy, 1);
1057 spin_lock_irqsave(&hisi_hba->lock, flags);
1058 hisi_sas_release_task(hisi_hba, device);
1059 spin_unlock_irqrestore(&hisi_hba->lock, flags);
1061 sas_put_local_phy(phy);
1063 struct hisi_sas_tmf_task tmf_task = { .tmf = TMF_LU_RESET };
1065 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
1066 if (rc == TMF_RESP_FUNC_COMPLETE) {
1067 spin_lock_irqsave(&hisi_hba->lock, flags);
1068 hisi_sas_release_task(hisi_hba, device);
1069 spin_unlock_irqrestore(&hisi_hba->lock, flags);
1073 dev_err(dev, "lu_reset: for device[%llx]:rc= %d\n",
1074 sas_dev->device_id, rc);
1078 static int hisi_sas_clear_nexus_ha(struct sas_ha_struct *sas_ha)
1080 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
1082 return hisi_sas_controller_reset(hisi_hba);
1085 static int hisi_sas_query_task(struct sas_task *task)
1087 struct scsi_lun lun;
1088 struct hisi_sas_tmf_task tmf_task;
1089 int rc = TMF_RESP_FUNC_FAILED;
1091 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1092 struct scsi_cmnd *cmnd = task->uldd_task;
1093 struct domain_device *device = task->dev;
1094 struct hisi_sas_slot *slot = task->lldd_task;
1095 u32 tag = slot->idx;
1097 int_to_scsilun(cmnd->device->lun, &lun);
1098 tmf_task.tmf = TMF_QUERY_TASK;
1099 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1101 rc = hisi_sas_debug_issue_ssp_tmf(device,
1105 /* The task is still in Lun, release it then */
1106 case TMF_RESP_FUNC_SUCC:
1107 /* The task is not in Lun or failed, reset the phy */
1108 case TMF_RESP_FUNC_FAILED:
1109 case TMF_RESP_FUNC_COMPLETE:
1112 rc = TMF_RESP_FUNC_FAILED;
1120 hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, u64 device_id,
1121 struct sas_task *task, int abort_flag,
1124 struct domain_device *device = task->dev;
1125 struct hisi_sas_device *sas_dev = device->lldd_dev;
1126 struct device *dev = &hisi_hba->pdev->dev;
1127 struct hisi_sas_port *port;
1128 struct hisi_sas_slot *slot;
1129 struct asd_sas_port *sas_port = device->port;
1130 struct hisi_sas_cmd_hdr *cmd_hdr_base;
1131 int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx;
1132 unsigned long flags;
1134 if (unlikely(test_bit(HISI_SAS_RESET_BIT, &hisi_hba->flags)))
1140 port = to_hisi_sas_port(sas_port);
1142 /* simply get a slot and send abort command */
1143 rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx);
1146 rc = hisi_hba->hw->get_free_slot(hisi_hba, sas_dev->device_id,
1147 &dlvry_queue, &dlvry_queue_slot);
1151 slot = &hisi_hba->slot_info[slot_idx];
1152 memset(slot, 0, sizeof(struct hisi_sas_slot));
1154 slot->idx = slot_idx;
1155 slot->n_elem = n_elem;
1156 slot->dlvry_queue = dlvry_queue;
1157 slot->dlvry_queue_slot = dlvry_queue_slot;
1158 cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
1159 slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
1162 task->lldd_task = slot;
1164 memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
1166 rc = hisi_sas_task_prep_abort(hisi_hba, slot, device_id,
1167 abort_flag, task_tag);
1172 list_add_tail(&slot->entry, &sas_dev->list);
1173 spin_lock_irqsave(&task->task_state_lock, flags);
1174 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
1175 spin_unlock_irqrestore(&task->task_state_lock, flags);
1177 hisi_hba->slot_prep = slot;
1179 atomic64_inc(&sas_dev->running_req);
1181 /* send abort command to our chip */
1182 hisi_hba->hw->start_delivery(hisi_hba);
1187 hisi_sas_slot_index_free(hisi_hba, slot_idx);
1189 dev_err(dev, "internal abort task prep: failed[%d]!\n", rc);
1195 * hisi_sas_internal_task_abort -- execute an internal
1196 * abort command for single IO command or a device
1197 * @hisi_hba: host controller struct
1198 * @device: domain device
1199 * @abort_flag: mode of operation, device or single IO
1200 * @tag: tag of IO to be aborted (only relevant to single
1204 hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
1205 struct domain_device *device,
1206 int abort_flag, int tag)
1208 struct sas_task *task;
1209 struct hisi_sas_device *sas_dev = device->lldd_dev;
1210 struct device *dev = &hisi_hba->pdev->dev;
1212 unsigned long flags;
1214 if (!hisi_hba->hw->prep_abort)
1217 task = sas_alloc_slow_task(GFP_KERNEL);
1222 task->task_proto = device->tproto;
1223 task->task_done = hisi_sas_task_done;
1224 task->slow_task->timer.data = (unsigned long)task;
1225 task->slow_task->timer.function = hisi_sas_tmf_timedout;
1226 task->slow_task->timer.expires = jiffies + 20*HZ;
1227 add_timer(&task->slow_task->timer);
1229 /* Lock as we are alloc'ing a slot, which cannot be interrupted */
1230 spin_lock_irqsave(&hisi_hba->lock, flags);
1231 res = hisi_sas_internal_abort_task_exec(hisi_hba, sas_dev->device_id,
1232 task, abort_flag, tag);
1233 spin_unlock_irqrestore(&hisi_hba->lock, flags);
1235 del_timer(&task->slow_task->timer);
1236 dev_err(dev, "internal task abort: executing internal task failed: %d\n",
1240 wait_for_completion(&task->slow_task->completion);
1241 res = TMF_RESP_FUNC_FAILED;
1243 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1244 task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
1245 res = TMF_RESP_FUNC_COMPLETE;
1249 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1250 task->task_status.stat == TMF_RESP_FUNC_SUCC) {
1251 res = TMF_RESP_FUNC_SUCC;
1255 /* Internal abort timed out */
1256 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1257 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1258 dev_err(dev, "internal task abort: timeout.\n");
1263 dev_dbg(dev, "internal task abort: task to dev %016llx task=%p "
1264 "resp: 0x%x sts 0x%x\n",
1265 SAS_ADDR(device->sas_addr),
1267 task->task_status.resp, /* 0 is complete, -1 is undelivered */
1268 task->task_status.stat);
1269 sas_free_task(task);
1274 static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy)
1276 hisi_sas_port_notify_formed(sas_phy);
1279 static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy)
1281 phy->phy_attached = 0;
1286 void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy)
1288 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1289 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1290 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
1293 /* Phy down but ready */
1294 hisi_sas_bytes_dmaed(hisi_hba, phy_no);
1295 hisi_sas_port_notify_formed(sas_phy);
1297 struct hisi_sas_port *port = phy->port;
1299 /* Phy down and not ready */
1300 sas_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL);
1301 sas_phy_disconnected(sas_phy);
1304 if (phy->phy_type & PORT_TYPE_SAS) {
1305 int port_id = port->id;
1307 if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba,
1309 port->port_attached = 0;
1310 } else if (phy->phy_type & PORT_TYPE_SATA)
1311 port->port_attached = 0;
1313 hisi_sas_phy_disconnected(phy);
1316 EXPORT_SYMBOL_GPL(hisi_sas_phy_down);
1318 void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 old_state,
1321 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
1324 for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) {
1325 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1326 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1327 struct asd_sas_port *sas_port = sas_phy->port;
1328 struct domain_device *dev;
1330 if (sas_phy->enabled) {
1331 /* Report PHY state change to libsas */
1332 if (state & (1 << phy_no))
1335 if (old_state & (1 << phy_no))
1336 /* PHY down but was up before */
1337 hisi_sas_phy_down(hisi_hba, phy_no, 0);
1341 dev = sas_port->port_dev;
1343 if (DEV_IS_EXPANDER(dev->dev_type))
1344 sas_ha->notify_phy_event(sas_phy, PORTE_BROADCAST_RCVD);
1347 EXPORT_SYMBOL_GPL(hisi_sas_rescan_topology);
1349 static struct scsi_transport_template *hisi_sas_stt;
1351 static struct scsi_host_template hisi_sas_sht = {
1352 .module = THIS_MODULE,
1354 .queuecommand = sas_queuecommand,
1355 .target_alloc = sas_target_alloc,
1356 .slave_configure = hisi_sas_slave_configure,
1357 .scan_finished = hisi_sas_scan_finished,
1358 .scan_start = hisi_sas_scan_start,
1359 .change_queue_depth = sas_change_queue_depth,
1360 .bios_param = sas_bios_param,
1363 .sg_tablesize = SG_ALL,
1364 .max_sectors = SCSI_DEFAULT_MAX_SECTORS,
1365 .use_clustering = ENABLE_CLUSTERING,
1366 .eh_device_reset_handler = sas_eh_device_reset_handler,
1367 .eh_bus_reset_handler = sas_eh_bus_reset_handler,
1368 .target_destroy = sas_target_destroy,
1372 static struct sas_domain_function_template hisi_sas_transport_ops = {
1373 .lldd_dev_found = hisi_sas_dev_found,
1374 .lldd_dev_gone = hisi_sas_dev_gone,
1375 .lldd_execute_task = hisi_sas_queue_command,
1376 .lldd_control_phy = hisi_sas_control_phy,
1377 .lldd_abort_task = hisi_sas_abort_task,
1378 .lldd_abort_task_set = hisi_sas_abort_task_set,
1379 .lldd_clear_aca = hisi_sas_clear_aca,
1380 .lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset,
1381 .lldd_lu_reset = hisi_sas_lu_reset,
1382 .lldd_query_task = hisi_sas_query_task,
1383 .lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha,
1384 .lldd_port_formed = hisi_sas_port_formed,
1387 void hisi_sas_init_mem(struct hisi_hba *hisi_hba)
1389 int i, s, max_command_entries = hisi_hba->hw->max_command_entries;
1391 for (i = 0; i < hisi_hba->queue_count; i++) {
1392 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
1393 struct hisi_sas_dq *dq = &hisi_hba->dq[i];
1395 s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
1396 memset(hisi_hba->cmd_hdr[i], 0, s);
1399 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
1400 memset(hisi_hba->complete_hdr[i], 0, s);
1404 s = sizeof(struct hisi_sas_initial_fis) * hisi_hba->n_phy;
1405 memset(hisi_hba->initial_fis, 0, s);
1407 s = max_command_entries * sizeof(struct hisi_sas_iost);
1408 memset(hisi_hba->iost, 0, s);
1410 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
1411 memset(hisi_hba->breakpoint, 0, s);
1413 s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2;
1414 memset(hisi_hba->sata_breakpoint, 0, s);
1416 EXPORT_SYMBOL_GPL(hisi_sas_init_mem);
1418 static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost)
1420 struct platform_device *pdev = hisi_hba->pdev;
1421 struct device *dev = &pdev->dev;
1422 int i, s, max_command_entries = hisi_hba->hw->max_command_entries;
1424 spin_lock_init(&hisi_hba->lock);
1425 for (i = 0; i < hisi_hba->n_phy; i++) {
1426 hisi_sas_phy_init(hisi_hba, i);
1427 hisi_hba->port[i].port_attached = 0;
1428 hisi_hba->port[i].id = -1;
1431 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1432 hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED;
1433 hisi_hba->devices[i].device_id = i;
1434 hisi_hba->devices[i].dev_status = HISI_SAS_DEV_NORMAL;
1437 for (i = 0; i < hisi_hba->queue_count; i++) {
1438 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
1439 struct hisi_sas_dq *dq = &hisi_hba->dq[i];
1441 /* Completion queue structure */
1443 cq->hisi_hba = hisi_hba;
1445 /* Delivery queue structure */
1447 dq->hisi_hba = hisi_hba;
1449 /* Delivery queue */
1450 s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
1451 hisi_hba->cmd_hdr[i] = dma_alloc_coherent(dev, s,
1452 &hisi_hba->cmd_hdr_dma[i], GFP_KERNEL);
1453 if (!hisi_hba->cmd_hdr[i])
1456 /* Completion queue */
1457 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
1458 hisi_hba->complete_hdr[i] = dma_alloc_coherent(dev, s,
1459 &hisi_hba->complete_hdr_dma[i], GFP_KERNEL);
1460 if (!hisi_hba->complete_hdr[i])
1464 s = HISI_SAS_STATUS_BUF_SZ;
1465 hisi_hba->status_buffer_pool = dma_pool_create("status_buffer",
1467 if (!hisi_hba->status_buffer_pool)
1470 s = HISI_SAS_COMMAND_TABLE_SZ;
1471 hisi_hba->command_table_pool = dma_pool_create("command_table",
1473 if (!hisi_hba->command_table_pool)
1476 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
1477 hisi_hba->itct = dma_alloc_coherent(dev, s, &hisi_hba->itct_dma,
1479 if (!hisi_hba->itct)
1482 memset(hisi_hba->itct, 0, s);
1484 hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries,
1485 sizeof(struct hisi_sas_slot),
1487 if (!hisi_hba->slot_info)
1490 s = max_command_entries * sizeof(struct hisi_sas_iost);
1491 hisi_hba->iost = dma_alloc_coherent(dev, s, &hisi_hba->iost_dma,
1493 if (!hisi_hba->iost)
1496 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
1497 hisi_hba->breakpoint = dma_alloc_coherent(dev, s,
1498 &hisi_hba->breakpoint_dma, GFP_KERNEL);
1499 if (!hisi_hba->breakpoint)
1502 hisi_hba->slot_index_count = max_command_entries;
1503 s = hisi_hba->slot_index_count / BITS_PER_BYTE;
1504 hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL);
1505 if (!hisi_hba->slot_index_tags)
1508 hisi_hba->sge_page_pool = dma_pool_create("status_sge", dev,
1509 sizeof(struct hisi_sas_sge_page), 16, 0);
1510 if (!hisi_hba->sge_page_pool)
1513 s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
1514 hisi_hba->initial_fis = dma_alloc_coherent(dev, s,
1515 &hisi_hba->initial_fis_dma, GFP_KERNEL);
1516 if (!hisi_hba->initial_fis)
1519 s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2;
1520 hisi_hba->sata_breakpoint = dma_alloc_coherent(dev, s,
1521 &hisi_hba->sata_breakpoint_dma, GFP_KERNEL);
1522 if (!hisi_hba->sata_breakpoint)
1524 hisi_sas_init_mem(hisi_hba);
1526 hisi_sas_slot_index_init(hisi_hba);
1528 hisi_hba->wq = create_singlethread_workqueue(dev_name(dev));
1529 if (!hisi_hba->wq) {
1530 dev_err(dev, "sas_alloc: failed to create workqueue\n");
1539 static void hisi_sas_free(struct hisi_hba *hisi_hba)
1541 struct device *dev = &hisi_hba->pdev->dev;
1542 int i, s, max_command_entries = hisi_hba->hw->max_command_entries;
1544 for (i = 0; i < hisi_hba->queue_count; i++) {
1545 s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
1546 if (hisi_hba->cmd_hdr[i])
1547 dma_free_coherent(dev, s,
1548 hisi_hba->cmd_hdr[i],
1549 hisi_hba->cmd_hdr_dma[i]);
1551 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
1552 if (hisi_hba->complete_hdr[i])
1553 dma_free_coherent(dev, s,
1554 hisi_hba->complete_hdr[i],
1555 hisi_hba->complete_hdr_dma[i]);
1558 dma_pool_destroy(hisi_hba->status_buffer_pool);
1559 dma_pool_destroy(hisi_hba->command_table_pool);
1560 dma_pool_destroy(hisi_hba->sge_page_pool);
1562 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
1564 dma_free_coherent(dev, s,
1565 hisi_hba->itct, hisi_hba->itct_dma);
1567 s = max_command_entries * sizeof(struct hisi_sas_iost);
1569 dma_free_coherent(dev, s,
1570 hisi_hba->iost, hisi_hba->iost_dma);
1572 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
1573 if (hisi_hba->breakpoint)
1574 dma_free_coherent(dev, s,
1575 hisi_hba->breakpoint,
1576 hisi_hba->breakpoint_dma);
1579 s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
1580 if (hisi_hba->initial_fis)
1581 dma_free_coherent(dev, s,
1582 hisi_hba->initial_fis,
1583 hisi_hba->initial_fis_dma);
1585 s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2;
1586 if (hisi_hba->sata_breakpoint)
1587 dma_free_coherent(dev, s,
1588 hisi_hba->sata_breakpoint,
1589 hisi_hba->sata_breakpoint_dma);
1592 destroy_workqueue(hisi_hba->wq);
1595 static void hisi_sas_rst_work_handler(struct work_struct *work)
1597 struct hisi_hba *hisi_hba =
1598 container_of(work, struct hisi_hba, rst_work);
1600 hisi_sas_controller_reset(hisi_hba);
1603 static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
1604 const struct hisi_sas_hw *hw)
1606 struct resource *res;
1607 struct Scsi_Host *shost;
1608 struct hisi_hba *hisi_hba;
1609 struct device *dev = &pdev->dev;
1610 struct device_node *np = pdev->dev.of_node;
1613 shost = scsi_host_alloc(&hisi_sas_sht, sizeof(*hisi_hba));
1615 dev_err(dev, "scsi host alloc failed\n");
1618 hisi_hba = shost_priv(shost);
1620 INIT_WORK(&hisi_hba->rst_work, hisi_sas_rst_work_handler);
1622 hisi_hba->pdev = pdev;
1623 hisi_hba->shost = shost;
1624 SHOST_TO_SAS_HA(shost) = &hisi_hba->sha;
1626 init_timer(&hisi_hba->timer);
1628 if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr,
1633 hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np,
1634 "hisilicon,sas-syscon");
1635 if (IS_ERR(hisi_hba->ctrl))
1638 if (device_property_read_u32(dev, "ctrl-reset-reg",
1639 &hisi_hba->ctrl_reset_reg))
1642 if (device_property_read_u32(dev, "ctrl-reset-sts-reg",
1643 &hisi_hba->ctrl_reset_sts_reg))
1646 if (device_property_read_u32(dev, "ctrl-clock-ena-reg",
1647 &hisi_hba->ctrl_clock_ena_reg))
1651 refclk = devm_clk_get(&pdev->dev, NULL);
1653 dev_dbg(dev, "no ref clk property\n");
1655 hisi_hba->refclk_frequency_mhz = clk_get_rate(refclk) / 1000000;
1657 if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy))
1660 if (device_property_read_u32(dev, "queue-count",
1661 &hisi_hba->queue_count))
1664 if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) &&
1665 dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) {
1666 dev_err(dev, "No usable DMA addressing method\n");
1670 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1671 hisi_hba->regs = devm_ioremap_resource(dev, res);
1672 if (IS_ERR(hisi_hba->regs))
1675 if (hisi_sas_alloc(hisi_hba, shost)) {
1676 hisi_sas_free(hisi_hba);
1683 dev_err(dev, "shost alloc failed\n");
1687 static void hisi_sas_init_add(struct hisi_hba *hisi_hba)
1691 for (i = 0; i < hisi_hba->n_phy; i++)
1692 memcpy(&hisi_hba->phy[i].dev_sas_addr,
1697 int hisi_sas_probe(struct platform_device *pdev,
1698 const struct hisi_sas_hw *hw)
1700 struct Scsi_Host *shost;
1701 struct hisi_hba *hisi_hba;
1702 struct device *dev = &pdev->dev;
1703 struct asd_sas_phy **arr_phy;
1704 struct asd_sas_port **arr_port;
1705 struct sas_ha_struct *sha;
1706 int rc, phy_nr, port_nr, i;
1708 shost = hisi_sas_shost_alloc(pdev, hw);
1712 sha = SHOST_TO_SAS_HA(shost);
1713 hisi_hba = shost_priv(shost);
1714 platform_set_drvdata(pdev, sha);
1716 phy_nr = port_nr = hisi_hba->n_phy;
1718 arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL);
1719 arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL);
1720 if (!arr_phy || !arr_port) {
1725 sha->sas_phy = arr_phy;
1726 sha->sas_port = arr_port;
1727 sha->lldd_ha = hisi_hba;
1729 shost->transportt = hisi_sas_stt;
1730 shost->max_id = HISI_SAS_MAX_DEVICES;
1731 shost->max_lun = ~0;
1732 shost->max_channel = 1;
1733 shost->max_cmd_len = 16;
1734 shost->sg_tablesize = min_t(u16, SG_ALL, HISI_SAS_SGE_PAGE_CNT);
1735 shost->can_queue = hisi_hba->hw->max_command_entries;
1736 shost->cmd_per_lun = hisi_hba->hw->max_command_entries;
1738 sha->sas_ha_name = DRV_NAME;
1739 sha->dev = &hisi_hba->pdev->dev;
1740 sha->lldd_module = THIS_MODULE;
1741 sha->sas_addr = &hisi_hba->sas_addr[0];
1742 sha->num_phys = hisi_hba->n_phy;
1743 sha->core.shost = hisi_hba->shost;
1745 for (i = 0; i < hisi_hba->n_phy; i++) {
1746 sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy;
1747 sha->sas_port[i] = &hisi_hba->port[i].sas_port;
1750 hisi_sas_init_add(hisi_hba);
1752 rc = scsi_add_host(shost, &pdev->dev);
1756 rc = sas_register_ha(sha);
1758 goto err_out_register_ha;
1760 rc = hisi_hba->hw->hw_init(hisi_hba);
1762 goto err_out_register_ha;
1764 scsi_scan_host(shost);
1768 err_out_register_ha:
1769 scsi_remove_host(shost);
1771 hisi_sas_free(hisi_hba);
1775 EXPORT_SYMBOL_GPL(hisi_sas_probe);
1777 int hisi_sas_remove(struct platform_device *pdev)
1779 struct sas_ha_struct *sha = platform_get_drvdata(pdev);
1780 struct hisi_hba *hisi_hba = sha->lldd_ha;
1781 struct Scsi_Host *shost = sha->core.shost;
1783 scsi_remove_host(sha->core.shost);
1784 sas_unregister_ha(sha);
1785 sas_remove_host(sha->core.shost);
1787 hisi_sas_free(hisi_hba);
1791 EXPORT_SYMBOL_GPL(hisi_sas_remove);
1793 static __init int hisi_sas_init(void)
1795 pr_info("hisi_sas: driver version %s\n", DRV_VERSION);
1797 hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops);
1804 static __exit void hisi_sas_exit(void)
1806 sas_release_transport(hisi_sas_stt);
1809 module_init(hisi_sas_init);
1810 module_exit(hisi_sas_exit);
1812 MODULE_VERSION(DRV_VERSION);
1813 MODULE_LICENSE("GPL");
1814 MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
1815 MODULE_DESCRIPTION("HISILICON SAS controller driver");
1816 MODULE_ALIAS("platform:" DRV_NAME);