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
);
25 static struct hisi_hba
*dev_to_hisi_hba(struct domain_device
*device
)
27 return device
->port
->ha
->lldd_ha
;
30 static void hisi_sas_slot_index_clear(struct hisi_hba
*hisi_hba
, int slot_idx
)
32 void *bitmap
= hisi_hba
->slot_index_tags
;
34 clear_bit(slot_idx
, bitmap
);
37 static void hisi_sas_slot_index_free(struct hisi_hba
*hisi_hba
, int slot_idx
)
39 hisi_sas_slot_index_clear(hisi_hba
, slot_idx
);
42 static void hisi_sas_slot_index_set(struct hisi_hba
*hisi_hba
, int slot_idx
)
44 void *bitmap
= hisi_hba
->slot_index_tags
;
46 set_bit(slot_idx
, bitmap
);
49 static int hisi_sas_slot_index_alloc(struct hisi_hba
*hisi_hba
, int *slot_idx
)
52 void *bitmap
= hisi_hba
->slot_index_tags
;
54 index
= find_first_zero_bit(bitmap
, hisi_hba
->slot_index_count
);
55 if (index
>= hisi_hba
->slot_index_count
)
56 return -SAS_QUEUE_FULL
;
57 hisi_sas_slot_index_set(hisi_hba
, index
);
62 static void hisi_sas_slot_index_init(struct hisi_hba
*hisi_hba
)
66 for (i
= 0; i
< hisi_hba
->slot_index_count
; ++i
)
67 hisi_sas_slot_index_clear(hisi_hba
, i
);
70 void hisi_sas_slot_task_free(struct hisi_hba
*hisi_hba
, struct sas_task
*task
,
71 struct hisi_sas_slot
*slot
)
73 struct device
*dev
= &hisi_hba
->pdev
->dev
;
78 if (!sas_protocol_ata(task
->task_proto
))
80 dma_unmap_sg(dev
, task
->scatter
, slot
->n_elem
,
83 if (slot
->command_table
)
84 dma_pool_free(hisi_hba
->command_table_pool
,
85 slot
->command_table
, slot
->command_table_dma
);
87 if (slot
->status_buffer
)
88 dma_pool_free(hisi_hba
->status_buffer_pool
,
89 slot
->status_buffer
, slot
->status_buffer_dma
);
92 dma_pool_free(hisi_hba
->sge_page_pool
, slot
->sge_page
,
95 list_del_init(&slot
->entry
);
96 task
->lldd_task
= NULL
;
99 hisi_sas_slot_index_free(hisi_hba
, slot
->idx
);
100 /* slot memory is fully zeroed when it is reused */
102 EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free
);
104 static int hisi_sas_task_prep_smp(struct hisi_hba
*hisi_hba
,
105 struct hisi_sas_slot
*slot
)
107 return hisi_hba
->hw
->prep_smp(hisi_hba
, slot
);
110 static int hisi_sas_task_prep_ssp(struct hisi_hba
*hisi_hba
,
111 struct hisi_sas_slot
*slot
, int is_tmf
,
112 struct hisi_sas_tmf_task
*tmf
)
114 return hisi_hba
->hw
->prep_ssp(hisi_hba
, slot
, is_tmf
, tmf
);
117 static int hisi_sas_task_prep_ata(struct hisi_hba
*hisi_hba
,
118 struct hisi_sas_slot
*slot
)
120 return hisi_hba
->hw
->prep_stp(hisi_hba
, slot
);
123 static int hisi_sas_task_prep_abort(struct hisi_hba
*hisi_hba
,
124 struct hisi_sas_slot
*slot
,
125 int device_id
, int abort_flag
, int tag_to_abort
)
127 return hisi_hba
->hw
->prep_abort(hisi_hba
, slot
,
128 device_id
, abort_flag
, tag_to_abort
);
132 * This function will issue an abort TMF regardless of whether the
133 * task is in the sdev or not. Then it will do the task complete
134 * cleanup and callbacks.
136 static void hisi_sas_slot_abort(struct work_struct
*work
)
138 struct hisi_sas_slot
*abort_slot
=
139 container_of(work
, struct hisi_sas_slot
, abort_slot
);
140 struct sas_task
*task
= abort_slot
->task
;
141 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(task
->dev
);
142 struct scsi_cmnd
*cmnd
= task
->uldd_task
;
143 struct hisi_sas_tmf_task tmf_task
;
144 struct domain_device
*device
= task
->dev
;
145 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
147 struct device
*dev
= &hisi_hba
->pdev
->dev
;
148 int tag
= abort_slot
->idx
;
150 if (!(task
->task_proto
& SAS_PROTOCOL_SSP
)) {
151 dev_err(dev
, "cannot abort slot for non-ssp task\n");
155 int_to_scsilun(cmnd
->device
->lun
, &lun
);
156 tmf_task
.tmf
= TMF_ABORT_TASK
;
157 tmf_task
.tag_of_task_to_be_managed
= cpu_to_le16(tag
);
159 hisi_sas_debug_issue_ssp_tmf(task
->dev
, lun
.scsi_lun
, &tmf_task
);
161 /* Do cleanup for this task */
162 hisi_sas_slot_task_free(hisi_hba
, task
, abort_slot
);
164 task
->task_done(task
);
165 if (sas_dev
&& sas_dev
->running_req
)
166 sas_dev
->running_req
--;
169 static int hisi_sas_task_prep(struct sas_task
*task
, struct hisi_hba
*hisi_hba
,
170 int is_tmf
, struct hisi_sas_tmf_task
*tmf
,
173 struct domain_device
*device
= task
->dev
;
174 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
175 struct hisi_sas_port
*port
;
176 struct hisi_sas_slot
*slot
;
177 struct hisi_sas_cmd_hdr
*cmd_hdr_base
;
178 struct device
*dev
= &hisi_hba
->pdev
->dev
;
179 int dlvry_queue_slot
, dlvry_queue
, n_elem
= 0, rc
, slot_idx
;
182 struct task_status_struct
*ts
= &task
->task_status
;
184 ts
->resp
= SAS_TASK_UNDELIVERED
;
185 ts
->stat
= SAS_PHY_DOWN
;
187 * libsas will use dev->port, should
188 * not call task_done for sata
190 if (device
->dev_type
!= SAS_SATA_DEV
)
191 task
->task_done(task
);
195 if (DEV_IS_GONE(sas_dev
)) {
197 dev_info(dev
, "task prep: device %llu not ready\n",
200 dev_info(dev
, "task prep: device %016llx not ready\n",
201 SAS_ADDR(device
->sas_addr
));
206 port
= device
->port
->lldd_port
;
207 if (port
&& !port
->port_attached
) {
208 dev_info(dev
, "task prep: %s port%d not attach device\n",
209 (sas_protocol_ata(task
->task_proto
)) ?
216 if (!sas_protocol_ata(task
->task_proto
)) {
217 if (task
->num_scatter
) {
218 n_elem
= dma_map_sg(dev
, task
->scatter
,
219 task
->num_scatter
, task
->data_dir
);
226 n_elem
= task
->num_scatter
;
228 if (hisi_hba
->hw
->slot_index_alloc
)
229 rc
= hisi_hba
->hw
->slot_index_alloc(hisi_hba
, &slot_idx
,
232 rc
= hisi_sas_slot_index_alloc(hisi_hba
, &slot_idx
);
235 rc
= hisi_hba
->hw
->get_free_slot(hisi_hba
, &dlvry_queue
,
240 slot
= &hisi_hba
->slot_info
[slot_idx
];
241 memset(slot
, 0, sizeof(struct hisi_sas_slot
));
243 slot
->idx
= slot_idx
;
244 slot
->n_elem
= n_elem
;
245 slot
->dlvry_queue
= dlvry_queue
;
246 slot
->dlvry_queue_slot
= dlvry_queue_slot
;
247 cmd_hdr_base
= hisi_hba
->cmd_hdr
[dlvry_queue
];
248 slot
->cmd_hdr
= &cmd_hdr_base
[dlvry_queue_slot
];
251 task
->lldd_task
= slot
;
252 INIT_WORK(&slot
->abort_slot
, hisi_sas_slot_abort
);
254 slot
->status_buffer
= dma_pool_alloc(hisi_hba
->status_buffer_pool
,
256 &slot
->status_buffer_dma
);
257 if (!slot
->status_buffer
) {
259 goto err_out_slot_buf
;
261 memset(slot
->status_buffer
, 0, HISI_SAS_STATUS_BUF_SZ
);
263 slot
->command_table
= dma_pool_alloc(hisi_hba
->command_table_pool
,
265 &slot
->command_table_dma
);
266 if (!slot
->command_table
) {
268 goto err_out_status_buf
;
270 memset(slot
->command_table
, 0, HISI_SAS_COMMAND_TABLE_SZ
);
271 memset(slot
->cmd_hdr
, 0, sizeof(struct hisi_sas_cmd_hdr
));
273 switch (task
->task_proto
) {
274 case SAS_PROTOCOL_SMP
:
275 rc
= hisi_sas_task_prep_smp(hisi_hba
, slot
);
277 case SAS_PROTOCOL_SSP
:
278 rc
= hisi_sas_task_prep_ssp(hisi_hba
, slot
, is_tmf
, tmf
);
280 case SAS_PROTOCOL_SATA
:
281 case SAS_PROTOCOL_STP
:
282 case SAS_PROTOCOL_SATA
| SAS_PROTOCOL_STP
:
283 rc
= hisi_sas_task_prep_ata(hisi_hba
, slot
);
286 dev_err(dev
, "task prep: unknown/unsupported proto (0x%x)\n",
293 dev_err(dev
, "task prep: rc = 0x%x\n", rc
);
296 goto err_out_command_table
;
299 list_add_tail(&slot
->entry
, &port
->list
);
300 spin_lock(&task
->task_state_lock
);
301 task
->task_state_flags
|= SAS_TASK_AT_INITIATOR
;
302 spin_unlock(&task
->task_state_lock
);
304 hisi_hba
->slot_prep
= slot
;
306 sas_dev
->running_req
++;
312 dma_pool_free(hisi_hba
->sge_page_pool
, slot
->sge_page
,
314 err_out_command_table
:
315 dma_pool_free(hisi_hba
->command_table_pool
, slot
->command_table
,
316 slot
->command_table_dma
);
318 dma_pool_free(hisi_hba
->status_buffer_pool
, slot
->status_buffer
,
319 slot
->status_buffer_dma
);
321 /* Nothing to be done */
323 hisi_sas_slot_index_free(hisi_hba
, slot_idx
);
325 dev_err(dev
, "task prep: failed[%d]!\n", rc
);
326 if (!sas_protocol_ata(task
->task_proto
))
328 dma_unmap_sg(dev
, task
->scatter
, n_elem
,
334 static int hisi_sas_task_exec(struct sas_task
*task
, gfp_t gfp_flags
,
335 int is_tmf
, struct hisi_sas_tmf_task
*tmf
)
340 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(task
->dev
);
341 struct device
*dev
= &hisi_hba
->pdev
->dev
;
343 /* protect task_prep and start_delivery sequence */
344 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
345 rc
= hisi_sas_task_prep(task
, hisi_hba
, is_tmf
, tmf
, &pass
);
347 dev_err(dev
, "task exec: failed[%d]!\n", rc
);
350 hisi_hba
->hw
->start_delivery(hisi_hba
);
351 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
356 static void hisi_sas_bytes_dmaed(struct hisi_hba
*hisi_hba
, int phy_no
)
358 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
359 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
360 struct sas_ha_struct
*sas_ha
;
362 if (!phy
->phy_attached
)
365 sas_ha
= &hisi_hba
->sha
;
366 sas_ha
->notify_phy_event(sas_phy
, PHYE_OOB_DONE
);
369 struct sas_phy
*sphy
= sas_phy
->phy
;
371 sphy
->negotiated_linkrate
= sas_phy
->linkrate
;
372 sphy
->minimum_linkrate
= phy
->minimum_linkrate
;
373 sphy
->minimum_linkrate_hw
= SAS_LINK_RATE_1_5_GBPS
;
374 sphy
->maximum_linkrate
= phy
->maximum_linkrate
;
377 if (phy
->phy_type
& PORT_TYPE_SAS
) {
378 struct sas_identify_frame
*id
;
380 id
= (struct sas_identify_frame
*)phy
->frame_rcvd
;
381 id
->dev_type
= phy
->identify
.device_type
;
382 id
->initiator_bits
= SAS_PROTOCOL_ALL
;
383 id
->target_bits
= phy
->identify
.target_port_protocols
;
384 } else if (phy
->phy_type
& PORT_TYPE_SATA
) {
388 sas_phy
->frame_rcvd_size
= phy
->frame_rcvd_size
;
389 sas_ha
->notify_port_event(sas_phy
, PORTE_BYTES_DMAED
);
392 static struct hisi_sas_device
*hisi_sas_alloc_dev(struct domain_device
*device
)
394 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
395 struct hisi_sas_device
*sas_dev
= NULL
;
398 spin_lock(&hisi_hba
->lock
);
399 for (i
= 0; i
< HISI_SAS_MAX_DEVICES
; i
++) {
400 if (hisi_hba
->devices
[i
].dev_type
== SAS_PHY_UNUSED
) {
401 hisi_hba
->devices
[i
].device_id
= i
;
402 sas_dev
= &hisi_hba
->devices
[i
];
403 sas_dev
->dev_status
= HISI_SAS_DEV_NORMAL
;
404 sas_dev
->dev_type
= device
->dev_type
;
405 sas_dev
->hisi_hba
= hisi_hba
;
406 sas_dev
->sas_device
= device
;
410 spin_unlock(&hisi_hba
->lock
);
415 static int hisi_sas_dev_found(struct domain_device
*device
)
417 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
418 struct domain_device
*parent_dev
= device
->parent
;
419 struct hisi_sas_device
*sas_dev
;
420 struct device
*dev
= &hisi_hba
->pdev
->dev
;
422 if (hisi_hba
->hw
->alloc_dev
)
423 sas_dev
= hisi_hba
->hw
->alloc_dev(device
);
425 sas_dev
= hisi_sas_alloc_dev(device
);
427 dev_err(dev
, "fail alloc dev: max support %d devices\n",
428 HISI_SAS_MAX_DEVICES
);
432 device
->lldd_dev
= sas_dev
;
433 hisi_hba
->hw
->setup_itct(hisi_hba
, sas_dev
);
435 if (parent_dev
&& DEV_IS_EXPANDER(parent_dev
->dev_type
)) {
437 u8 phy_num
= parent_dev
->ex_dev
.num_phys
;
440 for (phy_no
= 0; phy_no
< phy_num
; phy_no
++) {
441 phy
= &parent_dev
->ex_dev
.ex_phy
[phy_no
];
442 if (SAS_ADDR(phy
->attached_sas_addr
) ==
443 SAS_ADDR(device
->sas_addr
)) {
444 sas_dev
->attached_phy
= phy_no
;
449 if (phy_no
== phy_num
) {
450 dev_info(dev
, "dev found: no attached "
451 "dev:%016llx at ex:%016llx\n",
452 SAS_ADDR(device
->sas_addr
),
453 SAS_ADDR(parent_dev
->sas_addr
));
461 static int hisi_sas_slave_configure(struct scsi_device
*sdev
)
463 struct domain_device
*dev
= sdev_to_domain_dev(sdev
);
464 int ret
= sas_slave_configure(sdev
);
468 if (!dev_is_sata(dev
))
469 sas_change_queue_depth(sdev
, 64);
474 static void hisi_sas_scan_start(struct Scsi_Host
*shost
)
476 struct hisi_hba
*hisi_hba
= shost_priv(shost
);
479 for (i
= 0; i
< hisi_hba
->n_phy
; ++i
)
480 hisi_sas_bytes_dmaed(hisi_hba
, i
);
482 hisi_hba
->scan_finished
= 1;
485 static int hisi_sas_scan_finished(struct Scsi_Host
*shost
, unsigned long time
)
487 struct hisi_hba
*hisi_hba
= shost_priv(shost
);
488 struct sas_ha_struct
*sha
= &hisi_hba
->sha
;
490 if (hisi_hba
->scan_finished
== 0)
497 static void hisi_sas_phyup_work(struct work_struct
*work
)
499 struct hisi_sas_phy
*phy
=
500 container_of(work
, struct hisi_sas_phy
, phyup_ws
);
501 struct hisi_hba
*hisi_hba
= phy
->hisi_hba
;
502 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
503 int phy_no
= sas_phy
->id
;
505 hisi_hba
->hw
->sl_notify(hisi_hba
, phy_no
); /* This requires a sleep */
506 hisi_sas_bytes_dmaed(hisi_hba
, phy_no
);
509 static void hisi_sas_phy_init(struct hisi_hba
*hisi_hba
, int phy_no
)
511 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
512 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
514 phy
->hisi_hba
= hisi_hba
;
516 init_timer(&phy
->timer
);
517 sas_phy
->enabled
= (phy_no
< hisi_hba
->n_phy
) ? 1 : 0;
518 sas_phy
->class = SAS
;
519 sas_phy
->iproto
= SAS_PROTOCOL_ALL
;
521 sas_phy
->type
= PHY_TYPE_PHYSICAL
;
522 sas_phy
->role
= PHY_ROLE_INITIATOR
;
523 sas_phy
->oob_mode
= OOB_NOT_CONNECTED
;
524 sas_phy
->linkrate
= SAS_LINK_RATE_UNKNOWN
;
525 sas_phy
->id
= phy_no
;
526 sas_phy
->sas_addr
= &hisi_hba
->sas_addr
[0];
527 sas_phy
->frame_rcvd
= &phy
->frame_rcvd
[0];
528 sas_phy
->ha
= (struct sas_ha_struct
*)hisi_hba
->shost
->hostdata
;
529 sas_phy
->lldd_phy
= phy
;
531 INIT_WORK(&phy
->phyup_ws
, hisi_sas_phyup_work
);
534 static void hisi_sas_port_notify_formed(struct asd_sas_phy
*sas_phy
)
536 struct sas_ha_struct
*sas_ha
= sas_phy
->ha
;
537 struct hisi_hba
*hisi_hba
= sas_ha
->lldd_ha
;
538 struct hisi_sas_phy
*phy
= sas_phy
->lldd_phy
;
539 struct asd_sas_port
*sas_port
= sas_phy
->port
;
540 struct hisi_sas_port
*port
= &hisi_hba
->port
[sas_phy
->id
];
546 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
547 port
->port_attached
= 1;
548 port
->id
= phy
->port_id
;
550 sas_port
->lldd_port
= port
;
551 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
554 static void hisi_sas_do_release_task(struct hisi_hba
*hisi_hba
, int phy_no
,
555 struct domain_device
*device
)
557 struct hisi_sas_phy
*phy
;
558 struct hisi_sas_port
*port
;
559 struct hisi_sas_slot
*slot
, *slot2
;
560 struct device
*dev
= &hisi_hba
->pdev
->dev
;
562 phy
= &hisi_hba
->phy
[phy_no
];
567 list_for_each_entry_safe(slot
, slot2
, &port
->list
, entry
) {
568 struct sas_task
*task
;
571 if (device
&& task
->dev
!= device
)
574 dev_info(dev
, "Release slot [%d:%d], task [%p]:\n",
575 slot
->dlvry_queue
, slot
->dlvry_queue_slot
, task
);
576 hisi_hba
->hw
->slot_complete(hisi_hba
, slot
, 1);
580 static void hisi_sas_port_notify_deformed(struct asd_sas_phy
*sas_phy
)
582 struct domain_device
*device
;
583 struct hisi_sas_phy
*phy
= sas_phy
->lldd_phy
;
584 struct asd_sas_port
*sas_port
= sas_phy
->port
;
586 list_for_each_entry(device
, &sas_port
->dev_list
, dev_list_node
)
587 hisi_sas_do_release_task(phy
->hisi_hba
, sas_phy
->id
, device
);
590 static void hisi_sas_release_task(struct hisi_hba
*hisi_hba
,
591 struct domain_device
*device
)
593 struct asd_sas_port
*port
= device
->port
;
594 struct asd_sas_phy
*sas_phy
;
596 list_for_each_entry(sas_phy
, &port
->phy_list
, port_phy_el
)
597 hisi_sas_do_release_task(hisi_hba
, sas_phy
->id
, device
);
600 static void hisi_sas_dev_gone(struct domain_device
*device
)
602 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
603 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
604 struct device
*dev
= &hisi_hba
->pdev
->dev
;
605 u64 dev_id
= sas_dev
->device_id
;
607 dev_info(dev
, "found dev[%lld:%x] is gone\n",
608 sas_dev
->device_id
, sas_dev
->dev_type
);
610 hisi_sas_internal_task_abort(hisi_hba
, device
,
611 HISI_SAS_INT_ABT_DEV
, 0);
613 hisi_hba
->hw
->free_device(hisi_hba
, sas_dev
);
614 device
->lldd_dev
= NULL
;
615 memset(sas_dev
, 0, sizeof(*sas_dev
));
616 sas_dev
->device_id
= dev_id
;
617 sas_dev
->dev_type
= SAS_PHY_UNUSED
;
618 sas_dev
->dev_status
= HISI_SAS_DEV_NORMAL
;
621 static int hisi_sas_queue_command(struct sas_task
*task
, gfp_t gfp_flags
)
623 return hisi_sas_task_exec(task
, gfp_flags
, 0, NULL
);
626 static int hisi_sas_control_phy(struct asd_sas_phy
*sas_phy
, enum phy_func func
,
629 struct sas_ha_struct
*sas_ha
= sas_phy
->ha
;
630 struct hisi_hba
*hisi_hba
= sas_ha
->lldd_ha
;
631 int phy_no
= sas_phy
->id
;
634 case PHY_FUNC_HARD_RESET
:
635 hisi_hba
->hw
->phy_hard_reset(hisi_hba
, phy_no
);
638 case PHY_FUNC_LINK_RESET
:
639 hisi_hba
->hw
->phy_enable(hisi_hba
, phy_no
);
640 hisi_hba
->hw
->phy_hard_reset(hisi_hba
, phy_no
);
643 case PHY_FUNC_DISABLE
:
644 hisi_hba
->hw
->phy_disable(hisi_hba
, phy_no
);
647 case PHY_FUNC_SET_LINK_RATE
:
648 case PHY_FUNC_RELEASE_SPINUP_HOLD
:
655 static void hisi_sas_task_done(struct sas_task
*task
)
657 if (!del_timer(&task
->slow_task
->timer
))
659 complete(&task
->slow_task
->completion
);
662 static void hisi_sas_tmf_timedout(unsigned long data
)
664 struct sas_task
*task
= (struct sas_task
*)data
;
666 task
->task_state_flags
|= SAS_TASK_STATE_ABORTED
;
667 complete(&task
->slow_task
->completion
);
670 #define TASK_TIMEOUT 20
672 static int hisi_sas_exec_internal_tmf_task(struct domain_device
*device
,
673 void *parameter
, u32 para_len
,
674 struct hisi_sas_tmf_task
*tmf
)
676 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
677 struct hisi_hba
*hisi_hba
= sas_dev
->hisi_hba
;
678 struct device
*dev
= &hisi_hba
->pdev
->dev
;
679 struct sas_task
*task
;
682 for (retry
= 0; retry
< TASK_RETRY
; retry
++) {
683 task
= sas_alloc_slow_task(GFP_KERNEL
);
688 task
->task_proto
= device
->tproto
;
690 memcpy(&task
->ssp_task
, parameter
, para_len
);
691 task
->task_done
= hisi_sas_task_done
;
693 task
->slow_task
->timer
.data
= (unsigned long) task
;
694 task
->slow_task
->timer
.function
= hisi_sas_tmf_timedout
;
695 task
->slow_task
->timer
.expires
= jiffies
+ TASK_TIMEOUT
*HZ
;
696 add_timer(&task
->slow_task
->timer
);
698 res
= hisi_sas_task_exec(task
, GFP_KERNEL
, 1, tmf
);
701 del_timer(&task
->slow_task
->timer
);
702 dev_err(dev
, "abort tmf: executing internal task failed: %d\n",
707 wait_for_completion(&task
->slow_task
->completion
);
708 res
= TMF_RESP_FUNC_FAILED
;
709 /* Even TMF timed out, return direct. */
710 if ((task
->task_state_flags
& SAS_TASK_STATE_ABORTED
)) {
711 if (!(task
->task_state_flags
& SAS_TASK_STATE_DONE
)) {
712 dev_err(dev
, "abort tmf: TMF task[%d] timeout\n",
713 tmf
->tag_of_task_to_be_managed
);
714 if (task
->lldd_task
) {
715 struct hisi_sas_slot
*slot
=
718 hisi_sas_slot_task_free(hisi_hba
,
726 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
727 task
->task_status
.stat
== TMF_RESP_FUNC_COMPLETE
) {
728 res
= TMF_RESP_FUNC_COMPLETE
;
732 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
733 task
->task_status
.stat
== TMF_RESP_FUNC_SUCC
) {
734 res
= TMF_RESP_FUNC_SUCC
;
738 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
739 task
->task_status
.stat
== SAS_DATA_UNDERRUN
) {
740 /* no error, but return the number of bytes of
743 dev_warn(dev
, "abort tmf: task to dev %016llx "
744 "resp: 0x%x sts 0x%x underrun\n",
745 SAS_ADDR(device
->sas_addr
),
746 task
->task_status
.resp
,
747 task
->task_status
.stat
);
748 res
= task
->task_status
.residual
;
752 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
753 task
->task_status
.stat
== SAS_DATA_OVERRUN
) {
754 dev_warn(dev
, "abort tmf: blocked task error\n");
759 dev_warn(dev
, "abort tmf: task to dev "
760 "%016llx resp: 0x%x status 0x%x\n",
761 SAS_ADDR(device
->sas_addr
), task
->task_status
.resp
,
762 task
->task_status
.stat
);
767 WARN_ON(retry
== TASK_RETRY
);
772 static int hisi_sas_debug_issue_ssp_tmf(struct domain_device
*device
,
773 u8
*lun
, struct hisi_sas_tmf_task
*tmf
)
775 struct sas_ssp_task ssp_task
;
777 if (!(device
->tproto
& SAS_PROTOCOL_SSP
))
778 return TMF_RESP_FUNC_ESUPP
;
780 memcpy(ssp_task
.LUN
, lun
, 8);
782 return hisi_sas_exec_internal_tmf_task(device
, &ssp_task
,
783 sizeof(ssp_task
), tmf
);
786 static int hisi_sas_abort_task(struct sas_task
*task
)
789 struct hisi_sas_tmf_task tmf_task
;
790 struct domain_device
*device
= task
->dev
;
791 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
792 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(task
->dev
);
793 struct device
*dev
= &hisi_hba
->pdev
->dev
;
794 int rc
= TMF_RESP_FUNC_FAILED
;
798 dev_warn(dev
, "Device has been removed\n");
799 return TMF_RESP_FUNC_FAILED
;
802 spin_lock_irqsave(&task
->task_state_lock
, flags
);
803 if (task
->task_state_flags
& SAS_TASK_STATE_DONE
) {
804 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
805 rc
= TMF_RESP_FUNC_COMPLETE
;
809 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
810 sas_dev
->dev_status
= HISI_SAS_DEV_EH
;
811 if (task
->lldd_task
&& task
->task_proto
& SAS_PROTOCOL_SSP
) {
812 struct scsi_cmnd
*cmnd
= task
->uldd_task
;
813 struct hisi_sas_slot
*slot
= task
->lldd_task
;
816 int_to_scsilun(cmnd
->device
->lun
, &lun
);
817 tmf_task
.tmf
= TMF_ABORT_TASK
;
818 tmf_task
.tag_of_task_to_be_managed
= cpu_to_le16(tag
);
820 rc
= hisi_sas_debug_issue_ssp_tmf(task
->dev
, lun
.scsi_lun
,
823 /* if successful, clear the task and callback forwards.*/
824 if (rc
== TMF_RESP_FUNC_COMPLETE
) {
825 if (task
->lldd_task
) {
826 struct hisi_sas_slot
*slot
;
828 slot
= &hisi_hba
->slot_info
829 [tmf_task
.tag_of_task_to_be_managed
];
830 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
831 hisi_hba
->hw
->slot_complete(hisi_hba
, slot
, 1);
832 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
836 hisi_sas_internal_task_abort(hisi_hba
, device
,
837 HISI_SAS_INT_ABT_CMD
, tag
);
838 } else if (task
->task_proto
& SAS_PROTOCOL_SATA
||
839 task
->task_proto
& SAS_PROTOCOL_STP
) {
840 if (task
->dev
->dev_type
== SAS_SATA_DEV
) {
841 hisi_sas_internal_task_abort(hisi_hba
, device
,
842 HISI_SAS_INT_ABT_DEV
, 0);
843 rc
= TMF_RESP_FUNC_COMPLETE
;
845 } else if (task
->task_proto
& SAS_PROTOCOL_SMP
) {
847 struct hisi_sas_slot
*slot
= task
->lldd_task
;
850 hisi_sas_internal_task_abort(hisi_hba
, device
,
851 HISI_SAS_INT_ABT_CMD
, tag
);
855 if (rc
!= TMF_RESP_FUNC_COMPLETE
)
856 dev_notice(dev
, "abort task: rc=%d\n", rc
);
860 static int hisi_sas_abort_task_set(struct domain_device
*device
, u8
*lun
)
862 struct hisi_sas_tmf_task tmf_task
;
863 int rc
= TMF_RESP_FUNC_FAILED
;
865 tmf_task
.tmf
= TMF_ABORT_TASK_SET
;
866 rc
= hisi_sas_debug_issue_ssp_tmf(device
, lun
, &tmf_task
);
871 static int hisi_sas_clear_aca(struct domain_device
*device
, u8
*lun
)
873 int rc
= TMF_RESP_FUNC_FAILED
;
874 struct hisi_sas_tmf_task tmf_task
;
876 tmf_task
.tmf
= TMF_CLEAR_ACA
;
877 rc
= hisi_sas_debug_issue_ssp_tmf(device
, lun
, &tmf_task
);
882 static int hisi_sas_debug_I_T_nexus_reset(struct domain_device
*device
)
884 struct sas_phy
*phy
= sas_get_local_phy(device
);
885 int rc
, reset_type
= (device
->dev_type
== SAS_SATA_DEV
||
886 (device
->tproto
& SAS_PROTOCOL_STP
)) ? 0 : 1;
887 rc
= sas_phy_reset(phy
, reset_type
);
888 sas_put_local_phy(phy
);
893 static int hisi_sas_I_T_nexus_reset(struct domain_device
*device
)
895 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
896 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
898 int rc
= TMF_RESP_FUNC_FAILED
;
900 if (sas_dev
->dev_status
!= HISI_SAS_DEV_EH
)
901 return TMF_RESP_FUNC_FAILED
;
902 sas_dev
->dev_status
= HISI_SAS_DEV_NORMAL
;
904 rc
= hisi_sas_debug_I_T_nexus_reset(device
);
906 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
907 hisi_sas_release_task(hisi_hba
, device
);
908 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
913 static int hisi_sas_lu_reset(struct domain_device
*device
, u8
*lun
)
915 struct hisi_sas_tmf_task tmf_task
;
916 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
917 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
918 struct device
*dev
= &hisi_hba
->pdev
->dev
;
920 int rc
= TMF_RESP_FUNC_FAILED
;
922 tmf_task
.tmf
= TMF_LU_RESET
;
923 sas_dev
->dev_status
= HISI_SAS_DEV_EH
;
924 rc
= hisi_sas_debug_issue_ssp_tmf(device
, lun
, &tmf_task
);
925 if (rc
== TMF_RESP_FUNC_COMPLETE
) {
926 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
927 hisi_sas_release_task(hisi_hba
, device
);
928 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
931 /* If failed, fall-through I_T_Nexus reset */
932 dev_err(dev
, "lu_reset: for device[%llx]:rc= %d\n",
933 sas_dev
->device_id
, rc
);
937 static int hisi_sas_query_task(struct sas_task
*task
)
940 struct hisi_sas_tmf_task tmf_task
;
941 int rc
= TMF_RESP_FUNC_FAILED
;
943 if (task
->lldd_task
&& task
->task_proto
& SAS_PROTOCOL_SSP
) {
944 struct scsi_cmnd
*cmnd
= task
->uldd_task
;
945 struct domain_device
*device
= task
->dev
;
946 struct hisi_sas_slot
*slot
= task
->lldd_task
;
949 int_to_scsilun(cmnd
->device
->lun
, &lun
);
950 tmf_task
.tmf
= TMF_QUERY_TASK
;
951 tmf_task
.tag_of_task_to_be_managed
= cpu_to_le16(tag
);
953 rc
= hisi_sas_debug_issue_ssp_tmf(device
,
957 /* The task is still in Lun, release it then */
958 case TMF_RESP_FUNC_SUCC
:
959 /* The task is not in Lun or failed, reset the phy */
960 case TMF_RESP_FUNC_FAILED
:
961 case TMF_RESP_FUNC_COMPLETE
:
969 hisi_sas_internal_abort_task_exec(struct hisi_hba
*hisi_hba
, u64 device_id
,
970 struct sas_task
*task
, int abort_flag
,
973 struct domain_device
*device
= task
->dev
;
974 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
975 struct device
*dev
= &hisi_hba
->pdev
->dev
;
976 struct hisi_sas_port
*port
;
977 struct hisi_sas_slot
*slot
;
978 struct hisi_sas_cmd_hdr
*cmd_hdr_base
;
979 int dlvry_queue_slot
, dlvry_queue
, n_elem
= 0, rc
, slot_idx
;
984 port
= device
->port
->lldd_port
;
986 /* simply get a slot and send abort command */
987 rc
= hisi_sas_slot_index_alloc(hisi_hba
, &slot_idx
);
990 rc
= hisi_hba
->hw
->get_free_slot(hisi_hba
, &dlvry_queue
,
995 slot
= &hisi_hba
->slot_info
[slot_idx
];
996 memset(slot
, 0, sizeof(struct hisi_sas_slot
));
998 slot
->idx
= slot_idx
;
999 slot
->n_elem
= n_elem
;
1000 slot
->dlvry_queue
= dlvry_queue
;
1001 slot
->dlvry_queue_slot
= dlvry_queue_slot
;
1002 cmd_hdr_base
= hisi_hba
->cmd_hdr
[dlvry_queue
];
1003 slot
->cmd_hdr
= &cmd_hdr_base
[dlvry_queue_slot
];
1006 task
->lldd_task
= slot
;
1008 memset(slot
->cmd_hdr
, 0, sizeof(struct hisi_sas_cmd_hdr
));
1010 rc
= hisi_sas_task_prep_abort(hisi_hba
, slot
, device_id
,
1011 abort_flag
, task_tag
);
1015 /* Port structure is static for the HBA, so
1016 * even if the port is deformed it is ok
1019 list_add_tail(&slot
->entry
, &port
->list
);
1020 spin_lock(&task
->task_state_lock
);
1021 task
->task_state_flags
|= SAS_TASK_AT_INITIATOR
;
1022 spin_unlock(&task
->task_state_lock
);
1024 hisi_hba
->slot_prep
= slot
;
1026 sas_dev
->running_req
++;
1027 /* send abort command to our chip */
1028 hisi_hba
->hw
->start_delivery(hisi_hba
);
1033 hisi_sas_slot_index_free(hisi_hba
, slot_idx
);
1035 dev_err(dev
, "internal abort task prep: failed[%d]!\n", rc
);
1041 * hisi_sas_internal_task_abort -- execute an internal
1042 * abort command for single IO command or a device
1043 * @hisi_hba: host controller struct
1044 * @device: domain device
1045 * @abort_flag: mode of operation, device or single IO
1046 * @tag: tag of IO to be aborted (only relevant to single
1050 hisi_sas_internal_task_abort(struct hisi_hba
*hisi_hba
,
1051 struct domain_device
*device
,
1052 int abort_flag
, int tag
)
1054 struct sas_task
*task
;
1055 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
1056 struct device
*dev
= &hisi_hba
->pdev
->dev
;
1058 unsigned long flags
;
1060 if (!hisi_hba
->hw
->prep_abort
)
1063 task
= sas_alloc_slow_task(GFP_KERNEL
);
1068 task
->task_proto
= device
->tproto
;
1069 task
->task_done
= hisi_sas_task_done
;
1070 task
->slow_task
->timer
.data
= (unsigned long)task
;
1071 task
->slow_task
->timer
.function
= hisi_sas_tmf_timedout
;
1072 task
->slow_task
->timer
.expires
= jiffies
+ 20*HZ
;
1073 add_timer(&task
->slow_task
->timer
);
1075 /* Lock as we are alloc'ing a slot, which cannot be interrupted */
1076 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1077 res
= hisi_sas_internal_abort_task_exec(hisi_hba
, sas_dev
->device_id
,
1078 task
, abort_flag
, tag
);
1079 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1081 del_timer(&task
->slow_task
->timer
);
1082 dev_err(dev
, "internal task abort: executing internal task failed: %d\n",
1086 wait_for_completion(&task
->slow_task
->completion
);
1087 res
= TMF_RESP_FUNC_FAILED
;
1089 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
1090 task
->task_status
.stat
== TMF_RESP_FUNC_COMPLETE
) {
1091 res
= TMF_RESP_FUNC_COMPLETE
;
1095 /* TMF timed out, return direct. */
1096 if ((task
->task_state_flags
& SAS_TASK_STATE_ABORTED
)) {
1097 if (!(task
->task_state_flags
& SAS_TASK_STATE_DONE
)) {
1098 dev_err(dev
, "internal task abort: timeout.\n");
1099 if (task
->lldd_task
) {
1100 struct hisi_sas_slot
*slot
= task
->lldd_task
;
1102 hisi_sas_slot_task_free(hisi_hba
, task
, slot
);
1108 dev_info(dev
, "internal task abort: task to dev %016llx task=%p "
1109 "resp: 0x%x sts 0x%x\n",
1110 SAS_ADDR(device
->sas_addr
),
1112 task
->task_status
.resp
, /* 0 is complete, -1 is undelivered */
1113 task
->task_status
.stat
);
1114 sas_free_task(task
);
1119 static void hisi_sas_port_formed(struct asd_sas_phy
*sas_phy
)
1121 hisi_sas_port_notify_formed(sas_phy
);
1124 static void hisi_sas_port_deformed(struct asd_sas_phy
*sas_phy
)
1126 hisi_sas_port_notify_deformed(sas_phy
);
1129 static void hisi_sas_phy_disconnected(struct hisi_sas_phy
*phy
)
1131 phy
->phy_attached
= 0;
1136 void hisi_sas_phy_down(struct hisi_hba
*hisi_hba
, int phy_no
, int rdy
)
1138 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
1139 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
1140 struct sas_ha_struct
*sas_ha
= &hisi_hba
->sha
;
1143 /* Phy down but ready */
1144 hisi_sas_bytes_dmaed(hisi_hba
, phy_no
);
1145 hisi_sas_port_notify_formed(sas_phy
);
1147 struct hisi_sas_port
*port
= phy
->port
;
1149 /* Phy down and not ready */
1150 sas_ha
->notify_phy_event(sas_phy
, PHYE_LOSS_OF_SIGNAL
);
1151 sas_phy_disconnected(sas_phy
);
1154 if (phy
->phy_type
& PORT_TYPE_SAS
) {
1155 int port_id
= port
->id
;
1157 if (!hisi_hba
->hw
->get_wideport_bitmap(hisi_hba
,
1159 port
->port_attached
= 0;
1160 } else if (phy
->phy_type
& PORT_TYPE_SATA
)
1161 port
->port_attached
= 0;
1163 hisi_sas_phy_disconnected(phy
);
1166 EXPORT_SYMBOL_GPL(hisi_sas_phy_down
);
1168 static struct scsi_transport_template
*hisi_sas_stt
;
1170 static struct scsi_host_template hisi_sas_sht
= {
1171 .module
= THIS_MODULE
,
1173 .queuecommand
= sas_queuecommand
,
1174 .target_alloc
= sas_target_alloc
,
1175 .slave_configure
= hisi_sas_slave_configure
,
1176 .scan_finished
= hisi_sas_scan_finished
,
1177 .scan_start
= hisi_sas_scan_start
,
1178 .change_queue_depth
= sas_change_queue_depth
,
1179 .bios_param
= sas_bios_param
,
1182 .sg_tablesize
= SG_ALL
,
1183 .max_sectors
= SCSI_DEFAULT_MAX_SECTORS
,
1184 .use_clustering
= ENABLE_CLUSTERING
,
1185 .eh_device_reset_handler
= sas_eh_device_reset_handler
,
1186 .eh_bus_reset_handler
= sas_eh_bus_reset_handler
,
1187 .target_destroy
= sas_target_destroy
,
1191 static struct sas_domain_function_template hisi_sas_transport_ops
= {
1192 .lldd_dev_found
= hisi_sas_dev_found
,
1193 .lldd_dev_gone
= hisi_sas_dev_gone
,
1194 .lldd_execute_task
= hisi_sas_queue_command
,
1195 .lldd_control_phy
= hisi_sas_control_phy
,
1196 .lldd_abort_task
= hisi_sas_abort_task
,
1197 .lldd_abort_task_set
= hisi_sas_abort_task_set
,
1198 .lldd_clear_aca
= hisi_sas_clear_aca
,
1199 .lldd_I_T_nexus_reset
= hisi_sas_I_T_nexus_reset
,
1200 .lldd_lu_reset
= hisi_sas_lu_reset
,
1201 .lldd_query_task
= hisi_sas_query_task
,
1202 .lldd_port_formed
= hisi_sas_port_formed
,
1203 .lldd_port_deformed
= hisi_sas_port_deformed
,
1206 static int hisi_sas_alloc(struct hisi_hba
*hisi_hba
, struct Scsi_Host
*shost
)
1208 struct platform_device
*pdev
= hisi_hba
->pdev
;
1209 struct device
*dev
= &pdev
->dev
;
1210 int i
, s
, max_command_entries
= hisi_hba
->hw
->max_command_entries
;
1212 spin_lock_init(&hisi_hba
->lock
);
1213 for (i
= 0; i
< hisi_hba
->n_phy
; i
++) {
1214 hisi_sas_phy_init(hisi_hba
, i
);
1215 hisi_hba
->port
[i
].port_attached
= 0;
1216 hisi_hba
->port
[i
].id
= -1;
1217 INIT_LIST_HEAD(&hisi_hba
->port
[i
].list
);
1220 for (i
= 0; i
< HISI_SAS_MAX_DEVICES
; i
++) {
1221 hisi_hba
->devices
[i
].dev_type
= SAS_PHY_UNUSED
;
1222 hisi_hba
->devices
[i
].device_id
= i
;
1223 hisi_hba
->devices
[i
].dev_status
= HISI_SAS_DEV_NORMAL
;
1226 for (i
= 0; i
< hisi_hba
->queue_count
; i
++) {
1227 struct hisi_sas_cq
*cq
= &hisi_hba
->cq
[i
];
1228 struct hisi_sas_dq
*dq
= &hisi_hba
->dq
[i
];
1230 /* Completion queue structure */
1232 cq
->hisi_hba
= hisi_hba
;
1234 /* Delivery queue structure */
1236 dq
->hisi_hba
= hisi_hba
;
1238 /* Delivery queue */
1239 s
= sizeof(struct hisi_sas_cmd_hdr
) * HISI_SAS_QUEUE_SLOTS
;
1240 hisi_hba
->cmd_hdr
[i
] = dma_alloc_coherent(dev
, s
,
1241 &hisi_hba
->cmd_hdr_dma
[i
], GFP_KERNEL
);
1242 if (!hisi_hba
->cmd_hdr
[i
])
1244 memset(hisi_hba
->cmd_hdr
[i
], 0, s
);
1246 /* Completion queue */
1247 s
= hisi_hba
->hw
->complete_hdr_size
* HISI_SAS_QUEUE_SLOTS
;
1248 hisi_hba
->complete_hdr
[i
] = dma_alloc_coherent(dev
, s
,
1249 &hisi_hba
->complete_hdr_dma
[i
], GFP_KERNEL
);
1250 if (!hisi_hba
->complete_hdr
[i
])
1252 memset(hisi_hba
->complete_hdr
[i
], 0, s
);
1255 s
= HISI_SAS_STATUS_BUF_SZ
;
1256 hisi_hba
->status_buffer_pool
= dma_pool_create("status_buffer",
1258 if (!hisi_hba
->status_buffer_pool
)
1261 s
= HISI_SAS_COMMAND_TABLE_SZ
;
1262 hisi_hba
->command_table_pool
= dma_pool_create("command_table",
1264 if (!hisi_hba
->command_table_pool
)
1267 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_itct
);
1268 hisi_hba
->itct
= dma_alloc_coherent(dev
, s
, &hisi_hba
->itct_dma
,
1270 if (!hisi_hba
->itct
)
1273 memset(hisi_hba
->itct
, 0, s
);
1275 hisi_hba
->slot_info
= devm_kcalloc(dev
, max_command_entries
,
1276 sizeof(struct hisi_sas_slot
),
1278 if (!hisi_hba
->slot_info
)
1281 s
= max_command_entries
* sizeof(struct hisi_sas_iost
);
1282 hisi_hba
->iost
= dma_alloc_coherent(dev
, s
, &hisi_hba
->iost_dma
,
1284 if (!hisi_hba
->iost
)
1287 memset(hisi_hba
->iost
, 0, s
);
1289 s
= max_command_entries
* sizeof(struct hisi_sas_breakpoint
);
1290 hisi_hba
->breakpoint
= dma_alloc_coherent(dev
, s
,
1291 &hisi_hba
->breakpoint_dma
, GFP_KERNEL
);
1292 if (!hisi_hba
->breakpoint
)
1295 memset(hisi_hba
->breakpoint
, 0, s
);
1297 hisi_hba
->slot_index_count
= max_command_entries
;
1298 s
= hisi_hba
->slot_index_count
/ BITS_PER_BYTE
;
1299 hisi_hba
->slot_index_tags
= devm_kzalloc(dev
, s
, GFP_KERNEL
);
1300 if (!hisi_hba
->slot_index_tags
)
1303 hisi_hba
->sge_page_pool
= dma_pool_create("status_sge", dev
,
1304 sizeof(struct hisi_sas_sge_page
), 16, 0);
1305 if (!hisi_hba
->sge_page_pool
)
1308 s
= sizeof(struct hisi_sas_initial_fis
) * HISI_SAS_MAX_PHYS
;
1309 hisi_hba
->initial_fis
= dma_alloc_coherent(dev
, s
,
1310 &hisi_hba
->initial_fis_dma
, GFP_KERNEL
);
1311 if (!hisi_hba
->initial_fis
)
1313 memset(hisi_hba
->initial_fis
, 0, s
);
1315 s
= max_command_entries
* sizeof(struct hisi_sas_breakpoint
) * 2;
1316 hisi_hba
->sata_breakpoint
= dma_alloc_coherent(dev
, s
,
1317 &hisi_hba
->sata_breakpoint_dma
, GFP_KERNEL
);
1318 if (!hisi_hba
->sata_breakpoint
)
1320 memset(hisi_hba
->sata_breakpoint
, 0, s
);
1322 hisi_sas_slot_index_init(hisi_hba
);
1324 hisi_hba
->wq
= create_singlethread_workqueue(dev_name(dev
));
1325 if (!hisi_hba
->wq
) {
1326 dev_err(dev
, "sas_alloc: failed to create workqueue\n");
1335 static void hisi_sas_free(struct hisi_hba
*hisi_hba
)
1337 struct device
*dev
= &hisi_hba
->pdev
->dev
;
1338 int i
, s
, max_command_entries
= hisi_hba
->hw
->max_command_entries
;
1340 for (i
= 0; i
< hisi_hba
->queue_count
; i
++) {
1341 s
= sizeof(struct hisi_sas_cmd_hdr
) * HISI_SAS_QUEUE_SLOTS
;
1342 if (hisi_hba
->cmd_hdr
[i
])
1343 dma_free_coherent(dev
, s
,
1344 hisi_hba
->cmd_hdr
[i
],
1345 hisi_hba
->cmd_hdr_dma
[i
]);
1347 s
= hisi_hba
->hw
->complete_hdr_size
* HISI_SAS_QUEUE_SLOTS
;
1348 if (hisi_hba
->complete_hdr
[i
])
1349 dma_free_coherent(dev
, s
,
1350 hisi_hba
->complete_hdr
[i
],
1351 hisi_hba
->complete_hdr_dma
[i
]);
1354 dma_pool_destroy(hisi_hba
->status_buffer_pool
);
1355 dma_pool_destroy(hisi_hba
->command_table_pool
);
1356 dma_pool_destroy(hisi_hba
->sge_page_pool
);
1358 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_itct
);
1360 dma_free_coherent(dev
, s
,
1361 hisi_hba
->itct
, hisi_hba
->itct_dma
);
1363 s
= max_command_entries
* sizeof(struct hisi_sas_iost
);
1365 dma_free_coherent(dev
, s
,
1366 hisi_hba
->iost
, hisi_hba
->iost_dma
);
1368 s
= max_command_entries
* sizeof(struct hisi_sas_breakpoint
);
1369 if (hisi_hba
->breakpoint
)
1370 dma_free_coherent(dev
, s
,
1371 hisi_hba
->breakpoint
,
1372 hisi_hba
->breakpoint_dma
);
1375 s
= sizeof(struct hisi_sas_initial_fis
) * HISI_SAS_MAX_PHYS
;
1376 if (hisi_hba
->initial_fis
)
1377 dma_free_coherent(dev
, s
,
1378 hisi_hba
->initial_fis
,
1379 hisi_hba
->initial_fis_dma
);
1381 s
= max_command_entries
* sizeof(struct hisi_sas_breakpoint
) * 2;
1382 if (hisi_hba
->sata_breakpoint
)
1383 dma_free_coherent(dev
, s
,
1384 hisi_hba
->sata_breakpoint
,
1385 hisi_hba
->sata_breakpoint_dma
);
1388 destroy_workqueue(hisi_hba
->wq
);
1391 static struct Scsi_Host
*hisi_sas_shost_alloc(struct platform_device
*pdev
,
1392 const struct hisi_sas_hw
*hw
)
1394 struct resource
*res
;
1395 struct Scsi_Host
*shost
;
1396 struct hisi_hba
*hisi_hba
;
1397 struct device
*dev
= &pdev
->dev
;
1398 struct device_node
*np
= pdev
->dev
.of_node
;
1401 shost
= scsi_host_alloc(&hisi_sas_sht
, sizeof(*hisi_hba
));
1404 hisi_hba
= shost_priv(shost
);
1407 hisi_hba
->pdev
= pdev
;
1408 hisi_hba
->shost
= shost
;
1409 SHOST_TO_SAS_HA(shost
) = &hisi_hba
->sha
;
1411 init_timer(&hisi_hba
->timer
);
1413 if (device_property_read_u8_array(dev
, "sas-addr", hisi_hba
->sas_addr
,
1418 hisi_hba
->ctrl
= syscon_regmap_lookup_by_phandle(np
,
1419 "hisilicon,sas-syscon");
1420 if (IS_ERR(hisi_hba
->ctrl
))
1423 if (device_property_read_u32(dev
, "ctrl-reset-reg",
1424 &hisi_hba
->ctrl_reset_reg
))
1427 if (device_property_read_u32(dev
, "ctrl-reset-sts-reg",
1428 &hisi_hba
->ctrl_reset_sts_reg
))
1431 if (device_property_read_u32(dev
, "ctrl-clock-ena-reg",
1432 &hisi_hba
->ctrl_clock_ena_reg
))
1436 refclk
= devm_clk_get(&pdev
->dev
, NULL
);
1438 dev_info(dev
, "no ref clk property\n");
1440 hisi_hba
->refclk_frequency_mhz
= clk_get_rate(refclk
) / 1000000;
1442 if (device_property_read_u32(dev
, "phy-count", &hisi_hba
->n_phy
))
1445 if (device_property_read_u32(dev
, "queue-count",
1446 &hisi_hba
->queue_count
))
1449 if (dma_set_mask_and_coherent(dev
, DMA_BIT_MASK(64)) &&
1450 dma_set_mask_and_coherent(dev
, DMA_BIT_MASK(32))) {
1451 dev_err(dev
, "No usable DMA addressing method\n");
1455 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
1456 hisi_hba
->regs
= devm_ioremap_resource(dev
, res
);
1457 if (IS_ERR(hisi_hba
->regs
))
1460 if (hisi_sas_alloc(hisi_hba
, shost
)) {
1461 hisi_sas_free(hisi_hba
);
1467 dev_err(dev
, "shost alloc failed\n");
1471 static void hisi_sas_init_add(struct hisi_hba
*hisi_hba
)
1475 for (i
= 0; i
< hisi_hba
->n_phy
; i
++)
1476 memcpy(&hisi_hba
->phy
[i
].dev_sas_addr
,
1481 int hisi_sas_probe(struct platform_device
*pdev
,
1482 const struct hisi_sas_hw
*hw
)
1484 struct Scsi_Host
*shost
;
1485 struct hisi_hba
*hisi_hba
;
1486 struct device
*dev
= &pdev
->dev
;
1487 struct asd_sas_phy
**arr_phy
;
1488 struct asd_sas_port
**arr_port
;
1489 struct sas_ha_struct
*sha
;
1490 int rc
, phy_nr
, port_nr
, i
;
1492 shost
= hisi_sas_shost_alloc(pdev
, hw
);
1498 sha
= SHOST_TO_SAS_HA(shost
);
1499 hisi_hba
= shost_priv(shost
);
1500 platform_set_drvdata(pdev
, sha
);
1502 phy_nr
= port_nr
= hisi_hba
->n_phy
;
1504 arr_phy
= devm_kcalloc(dev
, phy_nr
, sizeof(void *), GFP_KERNEL
);
1505 arr_port
= devm_kcalloc(dev
, port_nr
, sizeof(void *), GFP_KERNEL
);
1506 if (!arr_phy
|| !arr_port
)
1509 sha
->sas_phy
= arr_phy
;
1510 sha
->sas_port
= arr_port
;
1511 sha
->core
.shost
= shost
;
1512 sha
->lldd_ha
= hisi_hba
;
1514 shost
->transportt
= hisi_sas_stt
;
1515 shost
->max_id
= HISI_SAS_MAX_DEVICES
;
1516 shost
->max_lun
= ~0;
1517 shost
->max_channel
= 1;
1518 shost
->max_cmd_len
= 16;
1519 shost
->sg_tablesize
= min_t(u16
, SG_ALL
, HISI_SAS_SGE_PAGE_CNT
);
1520 shost
->can_queue
= hisi_hba
->hw
->max_command_entries
;
1521 shost
->cmd_per_lun
= hisi_hba
->hw
->max_command_entries
;
1523 sha
->sas_ha_name
= DRV_NAME
;
1524 sha
->dev
= &hisi_hba
->pdev
->dev
;
1525 sha
->lldd_module
= THIS_MODULE
;
1526 sha
->sas_addr
= &hisi_hba
->sas_addr
[0];
1527 sha
->num_phys
= hisi_hba
->n_phy
;
1528 sha
->core
.shost
= hisi_hba
->shost
;
1530 for (i
= 0; i
< hisi_hba
->n_phy
; i
++) {
1531 sha
->sas_phy
[i
] = &hisi_hba
->phy
[i
].sas_phy
;
1532 sha
->sas_port
[i
] = &hisi_hba
->port
[i
].sas_port
;
1535 hisi_sas_init_add(hisi_hba
);
1537 rc
= hisi_hba
->hw
->hw_init(hisi_hba
);
1541 rc
= scsi_add_host(shost
, &pdev
->dev
);
1545 rc
= sas_register_ha(sha
);
1547 goto err_out_register_ha
;
1549 scsi_scan_host(shost
);
1553 err_out_register_ha
:
1554 scsi_remove_host(shost
);
1559 EXPORT_SYMBOL_GPL(hisi_sas_probe
);
1561 int hisi_sas_remove(struct platform_device
*pdev
)
1563 struct sas_ha_struct
*sha
= platform_get_drvdata(pdev
);
1564 struct hisi_hba
*hisi_hba
= sha
->lldd_ha
;
1566 scsi_remove_host(sha
->core
.shost
);
1567 sas_unregister_ha(sha
);
1568 sas_remove_host(sha
->core
.shost
);
1570 hisi_sas_free(hisi_hba
);
1573 EXPORT_SYMBOL_GPL(hisi_sas_remove
);
1575 static __init
int hisi_sas_init(void)
1577 pr_info("hisi_sas: driver version %s\n", DRV_VERSION
);
1579 hisi_sas_stt
= sas_domain_attach_transport(&hisi_sas_transport_ops
);
1586 static __exit
void hisi_sas_exit(void)
1588 sas_release_transport(hisi_sas_stt
);
1591 module_init(hisi_sas_init
);
1592 module_exit(hisi_sas_exit
);
1594 MODULE_VERSION(DRV_VERSION
);
1595 MODULE_LICENSE("GPL");
1596 MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
1597 MODULE_DESCRIPTION("HISILICON SAS controller driver");
1598 MODULE_ALIAS("platform:" DRV_NAME
);