2 * Copyright (c) 2015 Linaro Ltd.
3 * Copyright (c) 2015 Hisilicon Limited.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
13 #include "../libsas/sas_internal.h"
14 #define DRV_NAME "hisi_sas"
16 #define DEV_IS_GONE(dev) \
17 ((!dev) || (dev->dev_type == SAS_PHY_UNUSED))
19 static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device,
20 u8 *lun, struct hisi_sas_tmf_task *tmf);
22 hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
23 struct domain_device *device,
24 int abort_flag, int tag);
26 static struct hisi_hba *dev_to_hisi_hba(struct domain_device *device)
28 return device->port->ha->lldd_ha;
31 static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx)
33 void *bitmap = hisi_hba->slot_index_tags;
35 clear_bit(slot_idx, bitmap);
38 static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx)
40 hisi_sas_slot_index_clear(hisi_hba, slot_idx);
43 static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx)
45 void *bitmap = hisi_hba->slot_index_tags;
47 set_bit(slot_idx, bitmap);
50 static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba, int *slot_idx)
53 void *bitmap = hisi_hba->slot_index_tags;
55 index = find_first_zero_bit(bitmap, hisi_hba->slot_index_count);
56 if (index >= hisi_hba->slot_index_count)
57 return -SAS_QUEUE_FULL;
58 hisi_sas_slot_index_set(hisi_hba, index);
63 static void hisi_sas_slot_index_init(struct hisi_hba *hisi_hba)
67 for (i = 0; i < hisi_hba->slot_index_count; ++i)
68 hisi_sas_slot_index_clear(hisi_hba, i);
71 void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task,
72 struct hisi_sas_slot *slot)
74 struct device *dev = &hisi_hba->pdev->dev;
79 if (!sas_protocol_ata(task->task_proto))
81 dma_unmap_sg(dev, task->scatter, slot->n_elem,
84 if (slot->command_table)
85 dma_pool_free(hisi_hba->command_table_pool,
86 slot->command_table, slot->command_table_dma);
88 if (slot->status_buffer)
89 dma_pool_free(hisi_hba->status_buffer_pool,
90 slot->status_buffer, slot->status_buffer_dma);
93 dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page,
96 list_del_init(&slot->entry);
97 task->lldd_task = NULL;
100 hisi_sas_slot_index_free(hisi_hba, slot->idx);
101 /* slot memory is fully zeroed when it is reused */
103 EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free);
105 static int hisi_sas_task_prep_smp(struct hisi_hba *hisi_hba,
106 struct hisi_sas_slot *slot)
108 return hisi_hba->hw->prep_smp(hisi_hba, slot);
111 static int hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba,
112 struct hisi_sas_slot *slot, int is_tmf,
113 struct hisi_sas_tmf_task *tmf)
115 return hisi_hba->hw->prep_ssp(hisi_hba, slot, is_tmf, tmf);
118 static int hisi_sas_task_prep_ata(struct hisi_hba *hisi_hba,
119 struct hisi_sas_slot *slot)
121 return hisi_hba->hw->prep_stp(hisi_hba, slot);
124 static int hisi_sas_task_prep_abort(struct hisi_hba *hisi_hba,
125 struct hisi_sas_slot *slot,
126 int device_id, int abort_flag, int tag_to_abort)
128 return hisi_hba->hw->prep_abort(hisi_hba, slot,
129 device_id, abort_flag, tag_to_abort);
133 * This function will issue an abort TMF regardless of whether the
134 * task is in the sdev or not. Then it will do the task complete
135 * cleanup and callbacks.
137 static void hisi_sas_slot_abort(struct work_struct *work)
139 struct hisi_sas_slot *abort_slot =
140 container_of(work, struct hisi_sas_slot, abort_slot);
141 struct sas_task *task = abort_slot->task;
142 struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev);
143 struct scsi_cmnd *cmnd = task->uldd_task;
144 struct hisi_sas_tmf_task tmf_task;
145 struct domain_device *device = task->dev;
146 struct hisi_sas_device *sas_dev = device->lldd_dev;
148 struct device *dev = &hisi_hba->pdev->dev;
149 int tag = abort_slot->idx;
151 if (!(task->task_proto & SAS_PROTOCOL_SSP)) {
152 dev_err(dev, "cannot abort slot for non-ssp task\n");
156 int_to_scsilun(cmnd->device->lun, &lun);
157 tmf_task.tmf = TMF_ABORT_TASK;
158 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
160 hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun, &tmf_task);
162 /* Do cleanup for this task */
163 hisi_sas_slot_task_free(hisi_hba, task, abort_slot);
165 task->task_done(task);
166 if (sas_dev && sas_dev->running_req)
167 sas_dev->running_req--;
170 static int hisi_sas_task_prep(struct sas_task *task, struct hisi_hba *hisi_hba,
171 int is_tmf, struct hisi_sas_tmf_task *tmf,
174 struct domain_device *device = task->dev;
175 struct hisi_sas_device *sas_dev = device->lldd_dev;
176 struct hisi_sas_port *port;
177 struct hisi_sas_slot *slot;
178 struct hisi_sas_cmd_hdr *cmd_hdr_base;
179 struct device *dev = &hisi_hba->pdev->dev;
180 int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx;
183 struct task_status_struct *ts = &task->task_status;
185 ts->resp = SAS_TASK_UNDELIVERED;
186 ts->stat = SAS_PHY_DOWN;
188 * libsas will use dev->port, should
189 * not call task_done for sata
191 if (device->dev_type != SAS_SATA_DEV)
192 task->task_done(task);
196 if (DEV_IS_GONE(sas_dev)) {
198 dev_info(dev, "task prep: device %llu not ready\n",
201 dev_info(dev, "task prep: device %016llx not ready\n",
202 SAS_ADDR(device->sas_addr));
207 port = device->port->lldd_port;
208 if (port && !port->port_attached) {
209 dev_info(dev, "task prep: %s port%d not attach device\n",
210 (sas_protocol_ata(task->task_proto)) ?
217 if (!sas_protocol_ata(task->task_proto)) {
218 if (task->num_scatter) {
219 n_elem = dma_map_sg(dev, task->scatter,
220 task->num_scatter, task->data_dir);
227 n_elem = task->num_scatter;
229 if (hisi_hba->hw->slot_index_alloc)
230 rc = hisi_hba->hw->slot_index_alloc(hisi_hba, &slot_idx,
233 rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx);
236 rc = hisi_hba->hw->get_free_slot(hisi_hba, &dlvry_queue,
241 slot = &hisi_hba->slot_info[slot_idx];
242 memset(slot, 0, sizeof(struct hisi_sas_slot));
244 slot->idx = slot_idx;
245 slot->n_elem = n_elem;
246 slot->dlvry_queue = dlvry_queue;
247 slot->dlvry_queue_slot = dlvry_queue_slot;
248 cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
249 slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
252 task->lldd_task = slot;
253 INIT_WORK(&slot->abort_slot, hisi_sas_slot_abort);
255 slot->status_buffer = dma_pool_alloc(hisi_hba->status_buffer_pool,
257 &slot->status_buffer_dma);
258 if (!slot->status_buffer) {
260 goto err_out_slot_buf;
262 memset(slot->status_buffer, 0, HISI_SAS_STATUS_BUF_SZ);
264 slot->command_table = dma_pool_alloc(hisi_hba->command_table_pool,
266 &slot->command_table_dma);
267 if (!slot->command_table) {
269 goto err_out_status_buf;
271 memset(slot->command_table, 0, HISI_SAS_COMMAND_TABLE_SZ);
272 memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
274 switch (task->task_proto) {
275 case SAS_PROTOCOL_SMP:
276 rc = hisi_sas_task_prep_smp(hisi_hba, slot);
278 case SAS_PROTOCOL_SSP:
279 rc = hisi_sas_task_prep_ssp(hisi_hba, slot, is_tmf, tmf);
281 case SAS_PROTOCOL_SATA:
282 case SAS_PROTOCOL_STP:
283 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
284 rc = hisi_sas_task_prep_ata(hisi_hba, slot);
287 dev_err(dev, "task prep: unknown/unsupported proto (0x%x)\n",
294 dev_err(dev, "task prep: rc = 0x%x\n", rc);
297 goto err_out_command_table;
300 list_add_tail(&slot->entry, &port->list);
301 spin_lock(&task->task_state_lock);
302 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
303 spin_unlock(&task->task_state_lock);
305 hisi_hba->slot_prep = slot;
307 sas_dev->running_req++;
313 dma_pool_free(hisi_hba->sge_page_pool, slot->sge_page,
315 err_out_command_table:
316 dma_pool_free(hisi_hba->command_table_pool, slot->command_table,
317 slot->command_table_dma);
319 dma_pool_free(hisi_hba->status_buffer_pool, slot->status_buffer,
320 slot->status_buffer_dma);
322 /* Nothing to be done */
324 hisi_sas_slot_index_free(hisi_hba, slot_idx);
326 dev_err(dev, "task prep: failed[%d]!\n", rc);
327 if (!sas_protocol_ata(task->task_proto))
329 dma_unmap_sg(dev, task->scatter, n_elem,
335 static int hisi_sas_task_exec(struct sas_task *task, gfp_t gfp_flags,
336 int is_tmf, struct hisi_sas_tmf_task *tmf)
341 struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev);
342 struct device *dev = &hisi_hba->pdev->dev;
344 /* protect task_prep and start_delivery sequence */
345 spin_lock_irqsave(&hisi_hba->lock, flags);
346 rc = hisi_sas_task_prep(task, hisi_hba, is_tmf, tmf, &pass);
348 dev_err(dev, "task exec: failed[%d]!\n", rc);
351 hisi_hba->hw->start_delivery(hisi_hba);
352 spin_unlock_irqrestore(&hisi_hba->lock, flags);
357 static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no)
359 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
360 struct asd_sas_phy *sas_phy = &phy->sas_phy;
361 struct sas_ha_struct *sas_ha;
363 if (!phy->phy_attached)
366 sas_ha = &hisi_hba->sha;
367 sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE);
370 struct sas_phy *sphy = sas_phy->phy;
372 sphy->negotiated_linkrate = sas_phy->linkrate;
373 sphy->minimum_linkrate = phy->minimum_linkrate;
374 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
375 sphy->maximum_linkrate = phy->maximum_linkrate;
378 if (phy->phy_type & PORT_TYPE_SAS) {
379 struct sas_identify_frame *id;
381 id = (struct sas_identify_frame *)phy->frame_rcvd;
382 id->dev_type = phy->identify.device_type;
383 id->initiator_bits = SAS_PROTOCOL_ALL;
384 id->target_bits = phy->identify.target_port_protocols;
385 } else if (phy->phy_type & PORT_TYPE_SATA) {
389 sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
390 sas_ha->notify_port_event(sas_phy, PORTE_BYTES_DMAED);
393 static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device)
395 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
396 struct hisi_sas_device *sas_dev = NULL;
399 spin_lock(&hisi_hba->lock);
400 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
401 if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) {
402 hisi_hba->devices[i].device_id = i;
403 sas_dev = &hisi_hba->devices[i];
404 sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
405 sas_dev->dev_type = device->dev_type;
406 sas_dev->hisi_hba = hisi_hba;
407 sas_dev->sas_device = device;
411 spin_unlock(&hisi_hba->lock);
416 static int hisi_sas_dev_found(struct domain_device *device)
418 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
419 struct domain_device *parent_dev = device->parent;
420 struct hisi_sas_device *sas_dev;
421 struct device *dev = &hisi_hba->pdev->dev;
423 if (hisi_hba->hw->alloc_dev)
424 sas_dev = hisi_hba->hw->alloc_dev(device);
426 sas_dev = hisi_sas_alloc_dev(device);
428 dev_err(dev, "fail alloc dev: max support %d devices\n",
429 HISI_SAS_MAX_DEVICES);
433 device->lldd_dev = sas_dev;
434 hisi_hba->hw->setup_itct(hisi_hba, sas_dev);
436 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
438 u8 phy_num = parent_dev->ex_dev.num_phys;
441 for (phy_no = 0; phy_no < phy_num; phy_no++) {
442 phy = &parent_dev->ex_dev.ex_phy[phy_no];
443 if (SAS_ADDR(phy->attached_sas_addr) ==
444 SAS_ADDR(device->sas_addr)) {
445 sas_dev->attached_phy = phy_no;
450 if (phy_no == phy_num) {
451 dev_info(dev, "dev found: no attached "
452 "dev:%016llx at ex:%016llx\n",
453 SAS_ADDR(device->sas_addr),
454 SAS_ADDR(parent_dev->sas_addr));
462 static int hisi_sas_slave_configure(struct scsi_device *sdev)
464 struct domain_device *dev = sdev_to_domain_dev(sdev);
465 int ret = sas_slave_configure(sdev);
469 if (!dev_is_sata(dev))
470 sas_change_queue_depth(sdev, 64);
475 static void hisi_sas_scan_start(struct Scsi_Host *shost)
477 struct hisi_hba *hisi_hba = shost_priv(shost);
480 for (i = 0; i < hisi_hba->n_phy; ++i)
481 hisi_sas_bytes_dmaed(hisi_hba, i);
483 hisi_hba->scan_finished = 1;
486 static int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time)
488 struct hisi_hba *hisi_hba = shost_priv(shost);
489 struct sas_ha_struct *sha = &hisi_hba->sha;
491 if (hisi_hba->scan_finished == 0)
498 static void hisi_sas_phyup_work(struct work_struct *work)
500 struct hisi_sas_phy *phy =
501 container_of(work, struct hisi_sas_phy, phyup_ws);
502 struct hisi_hba *hisi_hba = phy->hisi_hba;
503 struct asd_sas_phy *sas_phy = &phy->sas_phy;
504 int phy_no = sas_phy->id;
506 hisi_hba->hw->sl_notify(hisi_hba, phy_no); /* This requires a sleep */
507 hisi_sas_bytes_dmaed(hisi_hba, phy_no);
510 static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no)
512 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
513 struct asd_sas_phy *sas_phy = &phy->sas_phy;
515 phy->hisi_hba = hisi_hba;
517 init_timer(&phy->timer);
518 sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0;
519 sas_phy->class = SAS;
520 sas_phy->iproto = SAS_PROTOCOL_ALL;
522 sas_phy->type = PHY_TYPE_PHYSICAL;
523 sas_phy->role = PHY_ROLE_INITIATOR;
524 sas_phy->oob_mode = OOB_NOT_CONNECTED;
525 sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN;
526 sas_phy->id = phy_no;
527 sas_phy->sas_addr = &hisi_hba->sas_addr[0];
528 sas_phy->frame_rcvd = &phy->frame_rcvd[0];
529 sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata;
530 sas_phy->lldd_phy = phy;
532 INIT_WORK(&phy->phyup_ws, hisi_sas_phyup_work);
535 static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy)
537 struct sas_ha_struct *sas_ha = sas_phy->ha;
538 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
539 struct hisi_sas_phy *phy = sas_phy->lldd_phy;
540 struct asd_sas_port *sas_port = sas_phy->port;
541 struct hisi_sas_port *port = &hisi_hba->port[sas_phy->id];
547 spin_lock_irqsave(&hisi_hba->lock, flags);
548 port->port_attached = 1;
549 port->id = phy->port_id;
551 sas_port->lldd_port = port;
552 spin_unlock_irqrestore(&hisi_hba->lock, flags);
555 static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, int phy_no,
556 struct domain_device *device)
558 struct hisi_sas_phy *phy;
559 struct hisi_sas_port *port;
560 struct hisi_sas_slot *slot, *slot2;
561 struct device *dev = &hisi_hba->pdev->dev;
563 phy = &hisi_hba->phy[phy_no];
568 list_for_each_entry_safe(slot, slot2, &port->list, entry) {
569 struct sas_task *task;
572 if (device && task->dev != device)
575 dev_info(dev, "Release slot [%d:%d], task [%p]:\n",
576 slot->dlvry_queue, slot->dlvry_queue_slot, task);
577 hisi_hba->hw->slot_complete(hisi_hba, slot, 1);
581 static void hisi_sas_port_notify_deformed(struct asd_sas_phy *sas_phy)
583 struct domain_device *device;
584 struct hisi_sas_phy *phy = sas_phy->lldd_phy;
585 struct asd_sas_port *sas_port = sas_phy->port;
587 list_for_each_entry(device, &sas_port->dev_list, dev_list_node)
588 hisi_sas_do_release_task(phy->hisi_hba, sas_phy->id, device);
591 static void hisi_sas_release_task(struct hisi_hba *hisi_hba,
592 struct domain_device *device)
594 struct asd_sas_port *port = device->port;
595 struct asd_sas_phy *sas_phy;
597 list_for_each_entry(sas_phy, &port->phy_list, port_phy_el)
598 hisi_sas_do_release_task(hisi_hba, sas_phy->id, device);
601 static void hisi_sas_dev_gone(struct domain_device *device)
603 struct hisi_sas_device *sas_dev = device->lldd_dev;
604 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
605 struct device *dev = &hisi_hba->pdev->dev;
606 u64 dev_id = sas_dev->device_id;
608 dev_info(dev, "found dev[%lld:%x] is gone\n",
609 sas_dev->device_id, sas_dev->dev_type);
611 hisi_sas_internal_task_abort(hisi_hba, device,
612 HISI_SAS_INT_ABT_DEV, 0);
614 hisi_hba->hw->free_device(hisi_hba, sas_dev);
615 device->lldd_dev = NULL;
616 memset(sas_dev, 0, sizeof(*sas_dev));
617 sas_dev->device_id = dev_id;
618 sas_dev->dev_type = SAS_PHY_UNUSED;
619 sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
622 static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags)
624 return hisi_sas_task_exec(task, gfp_flags, 0, NULL);
627 static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func,
630 struct sas_ha_struct *sas_ha = sas_phy->ha;
631 struct hisi_hba *hisi_hba = sas_ha->lldd_ha;
632 int phy_no = sas_phy->id;
635 case PHY_FUNC_HARD_RESET:
636 hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no);
639 case PHY_FUNC_LINK_RESET:
640 hisi_hba->hw->phy_enable(hisi_hba, phy_no);
641 hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no);
644 case PHY_FUNC_DISABLE:
645 hisi_hba->hw->phy_disable(hisi_hba, phy_no);
648 case PHY_FUNC_SET_LINK_RATE:
649 case PHY_FUNC_RELEASE_SPINUP_HOLD:
656 static void hisi_sas_task_done(struct sas_task *task)
658 if (!del_timer(&task->slow_task->timer))
660 complete(&task->slow_task->completion);
663 static void hisi_sas_tmf_timedout(unsigned long data)
665 struct sas_task *task = (struct sas_task *)data;
667 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
668 complete(&task->slow_task->completion);
671 #define TASK_TIMEOUT 20
673 static int hisi_sas_exec_internal_tmf_task(struct domain_device *device,
674 void *parameter, u32 para_len,
675 struct hisi_sas_tmf_task *tmf)
677 struct hisi_sas_device *sas_dev = device->lldd_dev;
678 struct hisi_hba *hisi_hba = sas_dev->hisi_hba;
679 struct device *dev = &hisi_hba->pdev->dev;
680 struct sas_task *task;
683 for (retry = 0; retry < TASK_RETRY; retry++) {
684 task = sas_alloc_slow_task(GFP_KERNEL);
689 task->task_proto = device->tproto;
691 memcpy(&task->ssp_task, parameter, para_len);
692 task->task_done = hisi_sas_task_done;
694 task->slow_task->timer.data = (unsigned long) task;
695 task->slow_task->timer.function = hisi_sas_tmf_timedout;
696 task->slow_task->timer.expires = jiffies + TASK_TIMEOUT*HZ;
697 add_timer(&task->slow_task->timer);
699 res = hisi_sas_task_exec(task, GFP_KERNEL, 1, tmf);
702 del_timer(&task->slow_task->timer);
703 dev_err(dev, "abort tmf: executing internal task failed: %d\n",
708 wait_for_completion(&task->slow_task->completion);
709 res = TMF_RESP_FUNC_FAILED;
710 /* Even TMF timed out, return direct. */
711 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
712 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
713 dev_err(dev, "abort tmf: TMF task[%d] timeout\n",
714 tmf->tag_of_task_to_be_managed);
715 if (task->lldd_task) {
716 struct hisi_sas_slot *slot =
719 hisi_sas_slot_task_free(hisi_hba,
727 if (task->task_status.resp == SAS_TASK_COMPLETE &&
728 task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
729 res = TMF_RESP_FUNC_COMPLETE;
733 if (task->task_status.resp == SAS_TASK_COMPLETE &&
734 task->task_status.stat == TMF_RESP_FUNC_SUCC) {
735 res = TMF_RESP_FUNC_SUCC;
739 if (task->task_status.resp == SAS_TASK_COMPLETE &&
740 task->task_status.stat == SAS_DATA_UNDERRUN) {
741 /* no error, but return the number of bytes of
744 dev_warn(dev, "abort tmf: task to dev %016llx "
745 "resp: 0x%x sts 0x%x underrun\n",
746 SAS_ADDR(device->sas_addr),
747 task->task_status.resp,
748 task->task_status.stat);
749 res = task->task_status.residual;
753 if (task->task_status.resp == SAS_TASK_COMPLETE &&
754 task->task_status.stat == SAS_DATA_OVERRUN) {
755 dev_warn(dev, "abort tmf: blocked task error\n");
760 dev_warn(dev, "abort tmf: task to dev "
761 "%016llx resp: 0x%x status 0x%x\n",
762 SAS_ADDR(device->sas_addr), task->task_status.resp,
763 task->task_status.stat);
768 WARN_ON(retry == TASK_RETRY);
773 static int hisi_sas_debug_issue_ssp_tmf(struct domain_device *device,
774 u8 *lun, struct hisi_sas_tmf_task *tmf)
776 struct sas_ssp_task ssp_task;
778 if (!(device->tproto & SAS_PROTOCOL_SSP))
779 return TMF_RESP_FUNC_ESUPP;
781 memcpy(ssp_task.LUN, lun, 8);
783 return hisi_sas_exec_internal_tmf_task(device, &ssp_task,
784 sizeof(ssp_task), tmf);
787 static int hisi_sas_abort_task(struct sas_task *task)
790 struct hisi_sas_tmf_task tmf_task;
791 struct domain_device *device = task->dev;
792 struct hisi_sas_device *sas_dev = device->lldd_dev;
793 struct hisi_hba *hisi_hba = dev_to_hisi_hba(task->dev);
794 struct device *dev = &hisi_hba->pdev->dev;
795 int rc = TMF_RESP_FUNC_FAILED;
799 dev_warn(dev, "Device has been removed\n");
800 return TMF_RESP_FUNC_FAILED;
803 spin_lock_irqsave(&task->task_state_lock, flags);
804 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
805 spin_unlock_irqrestore(&task->task_state_lock, flags);
806 rc = TMF_RESP_FUNC_COMPLETE;
810 spin_unlock_irqrestore(&task->task_state_lock, flags);
811 sas_dev->dev_status = HISI_SAS_DEV_EH;
812 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
813 struct scsi_cmnd *cmnd = task->uldd_task;
814 struct hisi_sas_slot *slot = task->lldd_task;
817 int_to_scsilun(cmnd->device->lun, &lun);
818 tmf_task.tmf = TMF_ABORT_TASK;
819 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
821 rc = hisi_sas_debug_issue_ssp_tmf(task->dev, lun.scsi_lun,
824 /* if successful, clear the task and callback forwards.*/
825 if (rc == TMF_RESP_FUNC_COMPLETE) {
826 if (task->lldd_task) {
827 struct hisi_sas_slot *slot;
829 slot = &hisi_hba->slot_info
830 [tmf_task.tag_of_task_to_be_managed];
831 spin_lock_irqsave(&hisi_hba->lock, flags);
832 hisi_hba->hw->slot_complete(hisi_hba, slot, 1);
833 spin_unlock_irqrestore(&hisi_hba->lock, flags);
837 hisi_sas_internal_task_abort(hisi_hba, device,
838 HISI_SAS_INT_ABT_CMD, tag);
839 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
840 task->task_proto & SAS_PROTOCOL_STP) {
841 if (task->dev->dev_type == SAS_SATA_DEV) {
842 hisi_sas_internal_task_abort(hisi_hba, device,
843 HISI_SAS_INT_ABT_DEV, 0);
844 rc = TMF_RESP_FUNC_COMPLETE;
846 } else if (task->task_proto & SAS_PROTOCOL_SMP) {
848 struct hisi_sas_slot *slot = task->lldd_task;
851 hisi_sas_internal_task_abort(hisi_hba, device,
852 HISI_SAS_INT_ABT_CMD, tag);
856 if (rc != TMF_RESP_FUNC_COMPLETE)
857 dev_notice(dev, "abort task: rc=%d\n", rc);
861 static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun)
863 struct hisi_sas_tmf_task tmf_task;
864 int rc = TMF_RESP_FUNC_FAILED;
866 tmf_task.tmf = TMF_ABORT_TASK_SET;
867 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
872 static int hisi_sas_clear_aca(struct domain_device *device, u8 *lun)
874 int rc = TMF_RESP_FUNC_FAILED;
875 struct hisi_sas_tmf_task tmf_task;
877 tmf_task.tmf = TMF_CLEAR_ACA;
878 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
883 static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device)
885 struct sas_phy *phy = sas_get_local_phy(device);
886 int rc, reset_type = (device->dev_type == SAS_SATA_DEV ||
887 (device->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
888 rc = sas_phy_reset(phy, reset_type);
889 sas_put_local_phy(phy);
894 static int hisi_sas_I_T_nexus_reset(struct domain_device *device)
896 struct hisi_sas_device *sas_dev = device->lldd_dev;
897 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
899 int rc = TMF_RESP_FUNC_FAILED;
901 if (sas_dev->dev_status != HISI_SAS_DEV_EH)
902 return TMF_RESP_FUNC_FAILED;
903 sas_dev->dev_status = HISI_SAS_DEV_NORMAL;
905 rc = hisi_sas_debug_I_T_nexus_reset(device);
907 spin_lock_irqsave(&hisi_hba->lock, flags);
908 hisi_sas_release_task(hisi_hba, device);
909 spin_unlock_irqrestore(&hisi_hba->lock, flags);
914 static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun)
916 struct hisi_sas_tmf_task tmf_task;
917 struct hisi_sas_device *sas_dev = device->lldd_dev;
918 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device);
919 struct device *dev = &hisi_hba->pdev->dev;
921 int rc = TMF_RESP_FUNC_FAILED;
923 tmf_task.tmf = TMF_LU_RESET;
924 sas_dev->dev_status = HISI_SAS_DEV_EH;
925 rc = hisi_sas_debug_issue_ssp_tmf(device, lun, &tmf_task);
926 if (rc == TMF_RESP_FUNC_COMPLETE) {
927 spin_lock_irqsave(&hisi_hba->lock, flags);
928 hisi_sas_release_task(hisi_hba, device);
929 spin_unlock_irqrestore(&hisi_hba->lock, flags);
932 /* If failed, fall-through I_T_Nexus reset */
933 dev_err(dev, "lu_reset: for device[%llx]:rc= %d\n",
934 sas_dev->device_id, rc);
938 static int hisi_sas_query_task(struct sas_task *task)
941 struct hisi_sas_tmf_task tmf_task;
942 int rc = TMF_RESP_FUNC_FAILED;
944 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
945 struct scsi_cmnd *cmnd = task->uldd_task;
946 struct domain_device *device = task->dev;
947 struct hisi_sas_slot *slot = task->lldd_task;
950 int_to_scsilun(cmnd->device->lun, &lun);
951 tmf_task.tmf = TMF_QUERY_TASK;
952 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
954 rc = hisi_sas_debug_issue_ssp_tmf(device,
958 /* The task is still in Lun, release it then */
959 case TMF_RESP_FUNC_SUCC:
960 /* The task is not in Lun or failed, reset the phy */
961 case TMF_RESP_FUNC_FAILED:
962 case TMF_RESP_FUNC_COMPLETE:
970 hisi_sas_internal_abort_task_exec(struct hisi_hba *hisi_hba, u64 device_id,
971 struct sas_task *task, int abort_flag,
974 struct domain_device *device = task->dev;
975 struct hisi_sas_device *sas_dev = device->lldd_dev;
976 struct device *dev = &hisi_hba->pdev->dev;
977 struct hisi_sas_port *port;
978 struct hisi_sas_slot *slot;
979 struct hisi_sas_cmd_hdr *cmd_hdr_base;
980 int dlvry_queue_slot, dlvry_queue, n_elem = 0, rc, slot_idx;
985 port = device->port->lldd_port;
987 /* simply get a slot and send abort command */
988 rc = hisi_sas_slot_index_alloc(hisi_hba, &slot_idx);
991 rc = hisi_hba->hw->get_free_slot(hisi_hba, &dlvry_queue,
996 slot = &hisi_hba->slot_info[slot_idx];
997 memset(slot, 0, sizeof(struct hisi_sas_slot));
999 slot->idx = slot_idx;
1000 slot->n_elem = n_elem;
1001 slot->dlvry_queue = dlvry_queue;
1002 slot->dlvry_queue_slot = dlvry_queue_slot;
1003 cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
1004 slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot];
1007 task->lldd_task = slot;
1009 memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr));
1011 rc = hisi_sas_task_prep_abort(hisi_hba, slot, device_id,
1012 abort_flag, task_tag);
1016 /* Port structure is static for the HBA, so
1017 * even if the port is deformed it is ok
1020 list_add_tail(&slot->entry, &port->list);
1021 spin_lock(&task->task_state_lock);
1022 task->task_state_flags |= SAS_TASK_AT_INITIATOR;
1023 spin_unlock(&task->task_state_lock);
1025 hisi_hba->slot_prep = slot;
1027 sas_dev->running_req++;
1028 /* send abort command to our chip */
1029 hisi_hba->hw->start_delivery(hisi_hba);
1034 hisi_sas_slot_index_free(hisi_hba, slot_idx);
1036 dev_err(dev, "internal abort task prep: failed[%d]!\n", rc);
1042 * hisi_sas_internal_task_abort -- execute an internal
1043 * abort command for single IO command or a device
1044 * @hisi_hba: host controller struct
1045 * @device: domain device
1046 * @abort_flag: mode of operation, device or single IO
1047 * @tag: tag of IO to be aborted (only relevant to single
1051 hisi_sas_internal_task_abort(struct hisi_hba *hisi_hba,
1052 struct domain_device *device,
1053 int abort_flag, int tag)
1055 struct sas_task *task;
1056 struct hisi_sas_device *sas_dev = device->lldd_dev;
1057 struct device *dev = &hisi_hba->pdev->dev;
1059 unsigned long flags;
1061 if (!hisi_hba->hw->prep_abort)
1064 task = sas_alloc_slow_task(GFP_KERNEL);
1069 task->task_proto = device->tproto;
1070 task->task_done = hisi_sas_task_done;
1071 task->slow_task->timer.data = (unsigned long)task;
1072 task->slow_task->timer.function = hisi_sas_tmf_timedout;
1073 task->slow_task->timer.expires = jiffies + 20*HZ;
1074 add_timer(&task->slow_task->timer);
1076 /* Lock as we are alloc'ing a slot, which cannot be interrupted */
1077 spin_lock_irqsave(&hisi_hba->lock, flags);
1078 res = hisi_sas_internal_abort_task_exec(hisi_hba, sas_dev->device_id,
1079 task, abort_flag, tag);
1080 spin_unlock_irqrestore(&hisi_hba->lock, flags);
1082 del_timer(&task->slow_task->timer);
1083 dev_err(dev, "internal task abort: executing internal task failed: %d\n",
1087 wait_for_completion(&task->slow_task->completion);
1088 res = TMF_RESP_FUNC_FAILED;
1090 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1091 task->task_status.stat == TMF_RESP_FUNC_COMPLETE) {
1092 res = TMF_RESP_FUNC_COMPLETE;
1096 /* TMF timed out, return direct. */
1097 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1098 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1099 dev_err(dev, "internal task abort: timeout.\n");
1100 if (task->lldd_task) {
1101 struct hisi_sas_slot *slot = task->lldd_task;
1103 hisi_sas_slot_task_free(hisi_hba, task, slot);
1109 dev_info(dev, "internal task abort: task to dev %016llx task=%p "
1110 "resp: 0x%x sts 0x%x\n",
1111 SAS_ADDR(device->sas_addr),
1113 task->task_status.resp, /* 0 is complete, -1 is undelivered */
1114 task->task_status.stat);
1115 sas_free_task(task);
1120 static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy)
1122 hisi_sas_port_notify_formed(sas_phy);
1125 static void hisi_sas_port_deformed(struct asd_sas_phy *sas_phy)
1127 hisi_sas_port_notify_deformed(sas_phy);
1130 static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy)
1132 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1133 struct sas_phy *sphy = sas_phy->phy;
1134 struct sas_phy_data *d = sphy->hostdata;
1136 phy->phy_attached = 0;
1141 sphy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
1143 sphy->negotiated_linkrate = SAS_PHY_DISABLED;
1146 void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy)
1148 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no];
1149 struct asd_sas_phy *sas_phy = &phy->sas_phy;
1150 struct sas_ha_struct *sas_ha = &hisi_hba->sha;
1153 /* Phy down but ready */
1154 hisi_sas_bytes_dmaed(hisi_hba, phy_no);
1155 hisi_sas_port_notify_formed(sas_phy);
1157 struct hisi_sas_port *port = phy->port;
1159 /* Phy down and not ready */
1160 sas_ha->notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL);
1161 sas_phy_disconnected(sas_phy);
1164 if (phy->phy_type & PORT_TYPE_SAS) {
1165 int port_id = port->id;
1167 if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba,
1169 port->port_attached = 0;
1170 } else if (phy->phy_type & PORT_TYPE_SATA)
1171 port->port_attached = 0;
1173 hisi_sas_phy_disconnected(phy);
1176 EXPORT_SYMBOL_GPL(hisi_sas_phy_down);
1178 static struct scsi_transport_template *hisi_sas_stt;
1180 static struct scsi_host_template hisi_sas_sht = {
1181 .module = THIS_MODULE,
1183 .queuecommand = sas_queuecommand,
1184 .target_alloc = sas_target_alloc,
1185 .slave_configure = hisi_sas_slave_configure,
1186 .scan_finished = hisi_sas_scan_finished,
1187 .scan_start = hisi_sas_scan_start,
1188 .change_queue_depth = sas_change_queue_depth,
1189 .bios_param = sas_bios_param,
1192 .sg_tablesize = SG_ALL,
1193 .max_sectors = SCSI_DEFAULT_MAX_SECTORS,
1194 .use_clustering = ENABLE_CLUSTERING,
1195 .eh_device_reset_handler = sas_eh_device_reset_handler,
1196 .eh_bus_reset_handler = sas_eh_bus_reset_handler,
1197 .target_destroy = sas_target_destroy,
1201 static struct sas_domain_function_template hisi_sas_transport_ops = {
1202 .lldd_dev_found = hisi_sas_dev_found,
1203 .lldd_dev_gone = hisi_sas_dev_gone,
1204 .lldd_execute_task = hisi_sas_queue_command,
1205 .lldd_control_phy = hisi_sas_control_phy,
1206 .lldd_abort_task = hisi_sas_abort_task,
1207 .lldd_abort_task_set = hisi_sas_abort_task_set,
1208 .lldd_clear_aca = hisi_sas_clear_aca,
1209 .lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset,
1210 .lldd_lu_reset = hisi_sas_lu_reset,
1211 .lldd_query_task = hisi_sas_query_task,
1212 .lldd_port_formed = hisi_sas_port_formed,
1213 .lldd_port_deformed = hisi_sas_port_deformed,
1216 static int hisi_sas_alloc(struct hisi_hba *hisi_hba, struct Scsi_Host *shost)
1218 struct platform_device *pdev = hisi_hba->pdev;
1219 struct device *dev = &pdev->dev;
1220 int i, s, max_command_entries = hisi_hba->hw->max_command_entries;
1222 spin_lock_init(&hisi_hba->lock);
1223 for (i = 0; i < hisi_hba->n_phy; i++) {
1224 hisi_sas_phy_init(hisi_hba, i);
1225 hisi_hba->port[i].port_attached = 0;
1226 hisi_hba->port[i].id = -1;
1227 INIT_LIST_HEAD(&hisi_hba->port[i].list);
1230 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) {
1231 hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED;
1232 hisi_hba->devices[i].device_id = i;
1233 hisi_hba->devices[i].dev_status = HISI_SAS_DEV_NORMAL;
1236 for (i = 0; i < hisi_hba->queue_count; i++) {
1237 struct hisi_sas_cq *cq = &hisi_hba->cq[i];
1238 struct hisi_sas_dq *dq = &hisi_hba->dq[i];
1240 /* Completion queue structure */
1242 cq->hisi_hba = hisi_hba;
1244 /* Delivery queue structure */
1246 dq->hisi_hba = hisi_hba;
1248 /* Delivery queue */
1249 s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
1250 hisi_hba->cmd_hdr[i] = dma_alloc_coherent(dev, s,
1251 &hisi_hba->cmd_hdr_dma[i], GFP_KERNEL);
1252 if (!hisi_hba->cmd_hdr[i])
1254 memset(hisi_hba->cmd_hdr[i], 0, s);
1256 /* Completion queue */
1257 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
1258 hisi_hba->complete_hdr[i] = dma_alloc_coherent(dev, s,
1259 &hisi_hba->complete_hdr_dma[i], GFP_KERNEL);
1260 if (!hisi_hba->complete_hdr[i])
1262 memset(hisi_hba->complete_hdr[i], 0, s);
1265 s = HISI_SAS_STATUS_BUF_SZ;
1266 hisi_hba->status_buffer_pool = dma_pool_create("status_buffer",
1268 if (!hisi_hba->status_buffer_pool)
1271 s = HISI_SAS_COMMAND_TABLE_SZ;
1272 hisi_hba->command_table_pool = dma_pool_create("command_table",
1274 if (!hisi_hba->command_table_pool)
1277 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
1278 hisi_hba->itct = dma_alloc_coherent(dev, s, &hisi_hba->itct_dma,
1280 if (!hisi_hba->itct)
1283 memset(hisi_hba->itct, 0, s);
1285 hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries,
1286 sizeof(struct hisi_sas_slot),
1288 if (!hisi_hba->slot_info)
1291 s = max_command_entries * sizeof(struct hisi_sas_iost);
1292 hisi_hba->iost = dma_alloc_coherent(dev, s, &hisi_hba->iost_dma,
1294 if (!hisi_hba->iost)
1297 memset(hisi_hba->iost, 0, s);
1299 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
1300 hisi_hba->breakpoint = dma_alloc_coherent(dev, s,
1301 &hisi_hba->breakpoint_dma, GFP_KERNEL);
1302 if (!hisi_hba->breakpoint)
1305 memset(hisi_hba->breakpoint, 0, s);
1307 hisi_hba->slot_index_count = max_command_entries;
1308 s = hisi_hba->slot_index_count / BITS_PER_BYTE;
1309 hisi_hba->slot_index_tags = devm_kzalloc(dev, s, GFP_KERNEL);
1310 if (!hisi_hba->slot_index_tags)
1313 hisi_hba->sge_page_pool = dma_pool_create("status_sge", dev,
1314 sizeof(struct hisi_sas_sge_page), 16, 0);
1315 if (!hisi_hba->sge_page_pool)
1318 s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
1319 hisi_hba->initial_fis = dma_alloc_coherent(dev, s,
1320 &hisi_hba->initial_fis_dma, GFP_KERNEL);
1321 if (!hisi_hba->initial_fis)
1323 memset(hisi_hba->initial_fis, 0, s);
1325 s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2;
1326 hisi_hba->sata_breakpoint = dma_alloc_coherent(dev, s,
1327 &hisi_hba->sata_breakpoint_dma, GFP_KERNEL);
1328 if (!hisi_hba->sata_breakpoint)
1330 memset(hisi_hba->sata_breakpoint, 0, s);
1332 hisi_sas_slot_index_init(hisi_hba);
1334 hisi_hba->wq = create_singlethread_workqueue(dev_name(dev));
1335 if (!hisi_hba->wq) {
1336 dev_err(dev, "sas_alloc: failed to create workqueue\n");
1345 static void hisi_sas_free(struct hisi_hba *hisi_hba)
1347 struct device *dev = &hisi_hba->pdev->dev;
1348 int i, s, max_command_entries = hisi_hba->hw->max_command_entries;
1350 for (i = 0; i < hisi_hba->queue_count; i++) {
1351 s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS;
1352 if (hisi_hba->cmd_hdr[i])
1353 dma_free_coherent(dev, s,
1354 hisi_hba->cmd_hdr[i],
1355 hisi_hba->cmd_hdr_dma[i]);
1357 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS;
1358 if (hisi_hba->complete_hdr[i])
1359 dma_free_coherent(dev, s,
1360 hisi_hba->complete_hdr[i],
1361 hisi_hba->complete_hdr_dma[i]);
1364 dma_pool_destroy(hisi_hba->status_buffer_pool);
1365 dma_pool_destroy(hisi_hba->command_table_pool);
1366 dma_pool_destroy(hisi_hba->sge_page_pool);
1368 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct);
1370 dma_free_coherent(dev, s,
1371 hisi_hba->itct, hisi_hba->itct_dma);
1373 s = max_command_entries * sizeof(struct hisi_sas_iost);
1375 dma_free_coherent(dev, s,
1376 hisi_hba->iost, hisi_hba->iost_dma);
1378 s = max_command_entries * sizeof(struct hisi_sas_breakpoint);
1379 if (hisi_hba->breakpoint)
1380 dma_free_coherent(dev, s,
1381 hisi_hba->breakpoint,
1382 hisi_hba->breakpoint_dma);
1385 s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS;
1386 if (hisi_hba->initial_fis)
1387 dma_free_coherent(dev, s,
1388 hisi_hba->initial_fis,
1389 hisi_hba->initial_fis_dma);
1391 s = max_command_entries * sizeof(struct hisi_sas_breakpoint) * 2;
1392 if (hisi_hba->sata_breakpoint)
1393 dma_free_coherent(dev, s,
1394 hisi_hba->sata_breakpoint,
1395 hisi_hba->sata_breakpoint_dma);
1398 destroy_workqueue(hisi_hba->wq);
1401 static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
1402 const struct hisi_sas_hw *hw)
1404 struct resource *res;
1405 struct Scsi_Host *shost;
1406 struct hisi_hba *hisi_hba;
1407 struct device *dev = &pdev->dev;
1408 struct device_node *np = pdev->dev.of_node;
1410 shost = scsi_host_alloc(&hisi_sas_sht, sizeof(*hisi_hba));
1413 hisi_hba = shost_priv(shost);
1416 hisi_hba->pdev = pdev;
1417 hisi_hba->shost = shost;
1418 SHOST_TO_SAS_HA(shost) = &hisi_hba->sha;
1420 init_timer(&hisi_hba->timer);
1422 if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr,
1427 hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np,
1428 "hisilicon,sas-syscon");
1429 if (IS_ERR(hisi_hba->ctrl))
1432 if (device_property_read_u32(dev, "ctrl-reset-reg",
1433 &hisi_hba->ctrl_reset_reg))
1436 if (device_property_read_u32(dev, "ctrl-reset-sts-reg",
1437 &hisi_hba->ctrl_reset_sts_reg))
1440 if (device_property_read_u32(dev, "ctrl-clock-ena-reg",
1441 &hisi_hba->ctrl_clock_ena_reg))
1445 if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy))
1448 if (device_property_read_u32(dev, "queue-count",
1449 &hisi_hba->queue_count))
1452 if (dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)) &&
1453 dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) {
1454 dev_err(dev, "No usable DMA addressing method\n");
1458 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1459 hisi_hba->regs = devm_ioremap_resource(dev, res);
1460 if (IS_ERR(hisi_hba->regs))
1463 if (hisi_sas_alloc(hisi_hba, shost)) {
1464 hisi_sas_free(hisi_hba);
1470 dev_err(dev, "shost alloc failed\n");
1474 static void hisi_sas_init_add(struct hisi_hba *hisi_hba)
1478 for (i = 0; i < hisi_hba->n_phy; i++)
1479 memcpy(&hisi_hba->phy[i].dev_sas_addr,
1484 int hisi_sas_probe(struct platform_device *pdev,
1485 const struct hisi_sas_hw *hw)
1487 struct Scsi_Host *shost;
1488 struct hisi_hba *hisi_hba;
1489 struct device *dev = &pdev->dev;
1490 struct asd_sas_phy **arr_phy;
1491 struct asd_sas_port **arr_port;
1492 struct sas_ha_struct *sha;
1493 int rc, phy_nr, port_nr, i;
1495 shost = hisi_sas_shost_alloc(pdev, hw);
1501 sha = SHOST_TO_SAS_HA(shost);
1502 hisi_hba = shost_priv(shost);
1503 platform_set_drvdata(pdev, sha);
1505 phy_nr = port_nr = hisi_hba->n_phy;
1507 arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL);
1508 arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL);
1509 if (!arr_phy || !arr_port)
1512 sha->sas_phy = arr_phy;
1513 sha->sas_port = arr_port;
1514 sha->core.shost = shost;
1515 sha->lldd_ha = hisi_hba;
1517 shost->transportt = hisi_sas_stt;
1518 shost->max_id = HISI_SAS_MAX_DEVICES;
1519 shost->max_lun = ~0;
1520 shost->max_channel = 1;
1521 shost->max_cmd_len = 16;
1522 shost->sg_tablesize = min_t(u16, SG_ALL, HISI_SAS_SGE_PAGE_CNT);
1523 shost->can_queue = hisi_hba->hw->max_command_entries;
1524 shost->cmd_per_lun = hisi_hba->hw->max_command_entries;
1526 sha->sas_ha_name = DRV_NAME;
1527 sha->dev = &hisi_hba->pdev->dev;
1528 sha->lldd_module = THIS_MODULE;
1529 sha->sas_addr = &hisi_hba->sas_addr[0];
1530 sha->num_phys = hisi_hba->n_phy;
1531 sha->core.shost = hisi_hba->shost;
1533 for (i = 0; i < hisi_hba->n_phy; i++) {
1534 sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy;
1535 sha->sas_port[i] = &hisi_hba->port[i].sas_port;
1538 hisi_sas_init_add(hisi_hba);
1540 rc = hisi_hba->hw->hw_init(hisi_hba);
1544 rc = scsi_add_host(shost, &pdev->dev);
1548 rc = sas_register_ha(sha);
1550 goto err_out_register_ha;
1552 scsi_scan_host(shost);
1556 err_out_register_ha:
1557 scsi_remove_host(shost);
1562 EXPORT_SYMBOL_GPL(hisi_sas_probe);
1564 int hisi_sas_remove(struct platform_device *pdev)
1566 struct sas_ha_struct *sha = platform_get_drvdata(pdev);
1567 struct hisi_hba *hisi_hba = sha->lldd_ha;
1569 scsi_remove_host(sha->core.shost);
1570 sas_unregister_ha(sha);
1571 sas_remove_host(sha->core.shost);
1573 hisi_sas_free(hisi_hba);
1576 EXPORT_SYMBOL_GPL(hisi_sas_remove);
1578 static __init int hisi_sas_init(void)
1580 pr_info("hisi_sas: driver version %s\n", DRV_VERSION);
1582 hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops);
1589 static __exit void hisi_sas_exit(void)
1591 sas_release_transport(hisi_sas_stt);
1594 module_init(hisi_sas_init);
1595 module_exit(hisi_sas_exit);
1597 MODULE_VERSION(DRV_VERSION);
1598 MODULE_LICENSE("GPL");
1599 MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
1600 MODULE_DESCRIPTION("HISILICON SAS controller driver");
1601 MODULE_ALIAS("platform:" DRV_NAME);