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_EXPANDER(type) \
16 ((type == SAS_EDGE_EXPANDER_DEVICE) || \
17 (type == SAS_FANOUT_EXPANDER_DEVICE))
19 #define DEV_IS_GONE(dev) \
20 ((!dev) || (dev->dev_type == SAS_PHY_UNUSED))
22 static struct hisi_hba
*dev_to_hisi_hba(struct domain_device
*device
)
24 return device
->port
->ha
->lldd_ha
;
27 static void hisi_sas_slot_index_clear(struct hisi_hba
*hisi_hba
, int slot_idx
)
29 void *bitmap
= hisi_hba
->slot_index_tags
;
31 clear_bit(slot_idx
, bitmap
);
34 static void hisi_sas_slot_index_free(struct hisi_hba
*hisi_hba
, int slot_idx
)
36 hisi_sas_slot_index_clear(hisi_hba
, slot_idx
);
39 static void hisi_sas_slot_index_set(struct hisi_hba
*hisi_hba
, int slot_idx
)
41 void *bitmap
= hisi_hba
->slot_index_tags
;
43 set_bit(slot_idx
, bitmap
);
46 static int hisi_sas_slot_index_alloc(struct hisi_hba
*hisi_hba
, int *slot_idx
)
49 void *bitmap
= hisi_hba
->slot_index_tags
;
51 index
= find_first_zero_bit(bitmap
, hisi_hba
->slot_index_count
);
52 if (index
>= hisi_hba
->slot_index_count
)
53 return -SAS_QUEUE_FULL
;
54 hisi_sas_slot_index_set(hisi_hba
, index
);
59 static void hisi_sas_slot_index_init(struct hisi_hba
*hisi_hba
)
63 for (i
= 0; i
< hisi_hba
->slot_index_count
; ++i
)
64 hisi_sas_slot_index_clear(hisi_hba
, i
);
67 void hisi_sas_slot_task_free(struct hisi_hba
*hisi_hba
, struct sas_task
*task
,
68 struct hisi_sas_slot
*slot
)
70 struct device
*dev
= &hisi_hba
->pdev
->dev
;
75 if (!sas_protocol_ata(task
->task_proto
))
77 dma_unmap_sg(dev
, task
->scatter
, slot
->n_elem
,
80 if (slot
->command_table
)
81 dma_pool_free(hisi_hba
->command_table_pool
,
82 slot
->command_table
, slot
->command_table_dma
);
84 if (slot
->status_buffer
)
85 dma_pool_free(hisi_hba
->status_buffer_pool
,
86 slot
->status_buffer
, slot
->status_buffer_dma
);
89 dma_pool_free(hisi_hba
->sge_page_pool
, slot
->sge_page
,
92 list_del_init(&slot
->entry
);
93 task
->lldd_task
= NULL
;
96 hisi_sas_slot_index_free(hisi_hba
, slot
->idx
);
97 memset(slot
, 0, sizeof(*slot
));
99 EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free
);
101 static int hisi_sas_task_prep_smp(struct hisi_hba
*hisi_hba
,
102 struct hisi_sas_slot
*slot
)
104 return hisi_hba
->hw
->prep_smp(hisi_hba
, slot
);
107 static int hisi_sas_task_prep_ssp(struct hisi_hba
*hisi_hba
,
108 struct hisi_sas_slot
*slot
, int is_tmf
,
109 struct hisi_sas_tmf_task
*tmf
)
111 return hisi_hba
->hw
->prep_ssp(hisi_hba
, slot
, is_tmf
, tmf
);
114 static int hisi_sas_task_prep(struct sas_task
*task
, struct hisi_hba
*hisi_hba
,
115 int is_tmf
, struct hisi_sas_tmf_task
*tmf
,
118 struct domain_device
*device
= task
->dev
;
119 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
120 struct hisi_sas_port
*port
;
121 struct hisi_sas_slot
*slot
;
122 struct hisi_sas_cmd_hdr
*cmd_hdr_base
;
123 struct device
*dev
= &hisi_hba
->pdev
->dev
;
124 int dlvry_queue_slot
, dlvry_queue
, n_elem
= 0, rc
, slot_idx
;
127 struct task_status_struct
*ts
= &task
->task_status
;
129 ts
->resp
= SAS_TASK_UNDELIVERED
;
130 ts
->stat
= SAS_PHY_DOWN
;
132 * libsas will use dev->port, should
133 * not call task_done for sata
135 if (device
->dev_type
!= SAS_SATA_DEV
)
136 task
->task_done(task
);
140 if (DEV_IS_GONE(sas_dev
)) {
142 dev_info(dev
, "task prep: device %llu not ready\n",
145 dev_info(dev
, "task prep: device %016llx not ready\n",
146 SAS_ADDR(device
->sas_addr
));
151 port
= device
->port
->lldd_port
;
152 if (port
&& !port
->port_attached
&& !tmf
) {
153 if (sas_protocol_ata(task
->task_proto
)) {
154 struct task_status_struct
*ts
= &task
->task_status
;
157 "task prep: SATA/STP port%d not attach device\n",
159 ts
->resp
= SAS_TASK_COMPLETE
;
160 ts
->stat
= SAS_PHY_DOWN
;
161 task
->task_done(task
);
163 struct task_status_struct
*ts
= &task
->task_status
;
166 "task prep: SAS port%d does not attach device\n",
168 ts
->resp
= SAS_TASK_UNDELIVERED
;
169 ts
->stat
= SAS_PHY_DOWN
;
170 task
->task_done(task
);
175 if (!sas_protocol_ata(task
->task_proto
)) {
176 if (task
->num_scatter
) {
177 n_elem
= dma_map_sg(dev
, task
->scatter
,
178 task
->num_scatter
, task
->data_dir
);
185 n_elem
= task
->num_scatter
;
187 rc
= hisi_sas_slot_index_alloc(hisi_hba
, &slot_idx
);
190 rc
= hisi_hba
->hw
->get_free_slot(hisi_hba
, &dlvry_queue
,
195 slot
= &hisi_hba
->slot_info
[slot_idx
];
196 memset(slot
, 0, sizeof(struct hisi_sas_slot
));
198 slot
->idx
= slot_idx
;
199 slot
->n_elem
= n_elem
;
200 slot
->dlvry_queue
= dlvry_queue
;
201 slot
->dlvry_queue_slot
= dlvry_queue_slot
;
202 cmd_hdr_base
= hisi_hba
->cmd_hdr
[dlvry_queue
];
203 slot
->cmd_hdr
= &cmd_hdr_base
[dlvry_queue_slot
];
206 task
->lldd_task
= slot
;
208 slot
->status_buffer
= dma_pool_alloc(hisi_hba
->status_buffer_pool
,
210 &slot
->status_buffer_dma
);
211 if (!slot
->status_buffer
)
212 goto err_out_slot_buf
;
213 memset(slot
->status_buffer
, 0, HISI_SAS_STATUS_BUF_SZ
);
215 slot
->command_table
= dma_pool_alloc(hisi_hba
->command_table_pool
,
217 &slot
->command_table_dma
);
218 if (!slot
->command_table
)
219 goto err_out_status_buf
;
220 memset(slot
->command_table
, 0, HISI_SAS_COMMAND_TABLE_SZ
);
221 memset(slot
->cmd_hdr
, 0, sizeof(struct hisi_sas_cmd_hdr
));
223 switch (task
->task_proto
) {
224 case SAS_PROTOCOL_SMP
:
225 rc
= hisi_sas_task_prep_smp(hisi_hba
, slot
);
227 case SAS_PROTOCOL_SSP
:
228 rc
= hisi_sas_task_prep_ssp(hisi_hba
, slot
, is_tmf
, tmf
);
230 case SAS_PROTOCOL_SATA
:
231 case SAS_PROTOCOL_STP
:
232 case SAS_PROTOCOL_SATA
| SAS_PROTOCOL_STP
:
234 dev_err(dev
, "task prep: unknown/unsupported proto (0x%x)\n",
241 dev_err(dev
, "task prep: rc = 0x%x\n", rc
);
244 goto err_out_command_table
;
247 list_add_tail(&slot
->entry
, &port
->list
);
248 spin_lock(&task
->task_state_lock
);
249 task
->task_state_flags
|= SAS_TASK_AT_INITIATOR
;
250 spin_unlock(&task
->task_state_lock
);
252 hisi_hba
->slot_prep
= slot
;
254 sas_dev
->running_req
++;
260 dma_pool_free(hisi_hba
->sge_page_pool
, slot
->sge_page
,
262 err_out_command_table
:
263 dma_pool_free(hisi_hba
->command_table_pool
, slot
->command_table
,
264 slot
->command_table_dma
);
266 dma_pool_free(hisi_hba
->status_buffer_pool
, slot
->status_buffer
,
267 slot
->status_buffer_dma
);
269 /* Nothing to be done */
271 hisi_sas_slot_index_free(hisi_hba
, slot_idx
);
273 dev_err(dev
, "task prep: failed[%d]!\n", rc
);
274 if (!sas_protocol_ata(task
->task_proto
))
276 dma_unmap_sg(dev
, task
->scatter
, n_elem
,
282 static int hisi_sas_task_exec(struct sas_task
*task
, gfp_t gfp_flags
,
283 int is_tmf
, struct hisi_sas_tmf_task
*tmf
)
288 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(task
->dev
);
289 struct device
*dev
= &hisi_hba
->pdev
->dev
;
291 /* protect task_prep and start_delivery sequence */
292 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
293 rc
= hisi_sas_task_prep(task
, hisi_hba
, is_tmf
, tmf
, &pass
);
295 dev_err(dev
, "task exec: failed[%d]!\n", rc
);
298 hisi_hba
->hw
->start_delivery(hisi_hba
);
299 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
304 static void hisi_sas_bytes_dmaed(struct hisi_hba
*hisi_hba
, int phy_no
)
306 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
307 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
308 struct sas_ha_struct
*sas_ha
;
310 if (!phy
->phy_attached
)
313 sas_ha
= &hisi_hba
->sha
;
314 sas_ha
->notify_phy_event(sas_phy
, PHYE_OOB_DONE
);
317 struct sas_phy
*sphy
= sas_phy
->phy
;
319 sphy
->negotiated_linkrate
= sas_phy
->linkrate
;
320 sphy
->minimum_linkrate
= phy
->minimum_linkrate
;
321 sphy
->minimum_linkrate_hw
= SAS_LINK_RATE_1_5_GBPS
;
322 sphy
->maximum_linkrate
= phy
->maximum_linkrate
;
325 if (phy
->phy_type
& PORT_TYPE_SAS
) {
326 struct sas_identify_frame
*id
;
328 id
= (struct sas_identify_frame
*)phy
->frame_rcvd
;
329 id
->dev_type
= phy
->identify
.device_type
;
330 id
->initiator_bits
= SAS_PROTOCOL_ALL
;
331 id
->target_bits
= phy
->identify
.target_port_protocols
;
332 } else if (phy
->phy_type
& PORT_TYPE_SATA
) {
336 sas_phy
->frame_rcvd_size
= phy
->frame_rcvd_size
;
337 sas_ha
->notify_port_event(sas_phy
, PORTE_BYTES_DMAED
);
340 static struct hisi_sas_device
*hisi_sas_alloc_dev(struct domain_device
*device
)
342 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
343 struct hisi_sas_device
*sas_dev
= NULL
;
346 spin_lock(&hisi_hba
->lock
);
347 for (i
= 0; i
< HISI_SAS_MAX_DEVICES
; i
++) {
348 if (hisi_hba
->devices
[i
].dev_type
== SAS_PHY_UNUSED
) {
349 hisi_hba
->devices
[i
].device_id
= i
;
350 sas_dev
= &hisi_hba
->devices
[i
];
351 sas_dev
->dev_status
= HISI_SAS_DEV_NORMAL
;
352 sas_dev
->dev_type
= device
->dev_type
;
353 sas_dev
->hisi_hba
= hisi_hba
;
354 sas_dev
->sas_device
= device
;
358 spin_unlock(&hisi_hba
->lock
);
363 static int hisi_sas_dev_found(struct domain_device
*device
)
365 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
366 struct domain_device
*parent_dev
= device
->parent
;
367 struct hisi_sas_device
*sas_dev
;
368 struct device
*dev
= &hisi_hba
->pdev
->dev
;
370 sas_dev
= hisi_sas_alloc_dev(device
);
372 dev_err(dev
, "fail alloc dev: max support %d devices\n",
373 HISI_SAS_MAX_DEVICES
);
377 device
->lldd_dev
= sas_dev
;
378 hisi_hba
->hw
->setup_itct(hisi_hba
, sas_dev
);
380 if (parent_dev
&& DEV_IS_EXPANDER(parent_dev
->dev_type
)) {
382 u8 phy_num
= parent_dev
->ex_dev
.num_phys
;
385 for (phy_no
= 0; phy_no
< phy_num
; phy_no
++) {
386 phy
= &parent_dev
->ex_dev
.ex_phy
[phy_no
];
387 if (SAS_ADDR(phy
->attached_sas_addr
) ==
388 SAS_ADDR(device
->sas_addr
)) {
389 sas_dev
->attached_phy
= phy_no
;
394 if (phy_no
== phy_num
) {
395 dev_info(dev
, "dev found: no attached "
396 "dev:%016llx at ex:%016llx\n",
397 SAS_ADDR(device
->sas_addr
),
398 SAS_ADDR(parent_dev
->sas_addr
));
406 static void hisi_sas_scan_start(struct Scsi_Host
*shost
)
408 struct hisi_hba
*hisi_hba
= shost_priv(shost
);
411 for (i
= 0; i
< hisi_hba
->n_phy
; ++i
)
412 hisi_sas_bytes_dmaed(hisi_hba
, i
);
414 hisi_hba
->scan_finished
= 1;
417 static int hisi_sas_scan_finished(struct Scsi_Host
*shost
, unsigned long time
)
419 struct hisi_hba
*hisi_hba
= shost_priv(shost
);
420 struct sas_ha_struct
*sha
= &hisi_hba
->sha
;
422 if (hisi_hba
->scan_finished
== 0)
429 static void hisi_sas_phyup_work(struct work_struct
*work
)
431 struct hisi_sas_phy
*phy
=
432 container_of(work
, struct hisi_sas_phy
, phyup_ws
);
433 struct hisi_hba
*hisi_hba
= phy
->hisi_hba
;
434 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
435 int phy_no
= sas_phy
->id
;
437 hisi_hba
->hw
->sl_notify(hisi_hba
, phy_no
); /* This requires a sleep */
438 hisi_sas_bytes_dmaed(hisi_hba
, phy_no
);
441 static void hisi_sas_phy_init(struct hisi_hba
*hisi_hba
, int phy_no
)
443 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
444 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
446 phy
->hisi_hba
= hisi_hba
;
448 init_timer(&phy
->timer
);
449 sas_phy
->enabled
= (phy_no
< hisi_hba
->n_phy
) ? 1 : 0;
450 sas_phy
->class = SAS
;
451 sas_phy
->iproto
= SAS_PROTOCOL_ALL
;
453 sas_phy
->type
= PHY_TYPE_PHYSICAL
;
454 sas_phy
->role
= PHY_ROLE_INITIATOR
;
455 sas_phy
->oob_mode
= OOB_NOT_CONNECTED
;
456 sas_phy
->linkrate
= SAS_LINK_RATE_UNKNOWN
;
457 sas_phy
->id
= phy_no
;
458 sas_phy
->sas_addr
= &hisi_hba
->sas_addr
[0];
459 sas_phy
->frame_rcvd
= &phy
->frame_rcvd
[0];
460 sas_phy
->ha
= (struct sas_ha_struct
*)hisi_hba
->shost
->hostdata
;
461 sas_phy
->lldd_phy
= phy
;
463 INIT_WORK(&phy
->phyup_ws
, hisi_sas_phyup_work
);
466 static void hisi_sas_port_notify_formed(struct asd_sas_phy
*sas_phy
)
468 struct sas_ha_struct
*sas_ha
= sas_phy
->ha
;
469 struct hisi_hba
*hisi_hba
= sas_ha
->lldd_ha
;
470 struct hisi_sas_phy
*phy
= sas_phy
->lldd_phy
;
471 struct asd_sas_port
*sas_port
= sas_phy
->port
;
472 struct hisi_sas_port
*port
= &hisi_hba
->port
[sas_phy
->id
];
478 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
479 port
->port_attached
= 1;
480 port
->id
= phy
->port_id
;
482 sas_port
->lldd_port
= port
;
483 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
486 static void hisi_sas_do_release_task(struct hisi_hba
*hisi_hba
, int phy_no
,
487 struct domain_device
*device
)
489 struct hisi_sas_phy
*phy
;
490 struct hisi_sas_port
*port
;
491 struct hisi_sas_slot
*slot
, *slot2
;
492 struct device
*dev
= &hisi_hba
->pdev
->dev
;
494 phy
= &hisi_hba
->phy
[phy_no
];
499 list_for_each_entry_safe(slot
, slot2
, &port
->list
, entry
) {
500 struct sas_task
*task
;
503 if (device
&& task
->dev
!= device
)
506 dev_info(dev
, "Release slot [%d:%d], task [%p]:\n",
507 slot
->dlvry_queue
, slot
->dlvry_queue_slot
, task
);
508 hisi_hba
->hw
->slot_complete(hisi_hba
, slot
, 1);
512 static void hisi_sas_port_notify_deformed(struct asd_sas_phy
*sas_phy
)
514 struct domain_device
*device
;
515 struct hisi_sas_phy
*phy
= sas_phy
->lldd_phy
;
516 struct asd_sas_port
*sas_port
= sas_phy
->port
;
518 list_for_each_entry(device
, &sas_port
->dev_list
, dev_list_node
)
519 hisi_sas_do_release_task(phy
->hisi_hba
, sas_phy
->id
, device
);
522 static void hisi_sas_release_task(struct hisi_hba
*hisi_hba
,
523 struct domain_device
*device
)
525 struct asd_sas_port
*port
= device
->port
;
526 struct asd_sas_phy
*sas_phy
;
528 list_for_each_entry(sas_phy
, &port
->phy_list
, port_phy_el
)
529 hisi_sas_do_release_task(hisi_hba
, sas_phy
->id
, device
);
532 static void hisi_sas_dev_gone(struct domain_device
*device
)
534 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
535 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
536 struct device
*dev
= &hisi_hba
->pdev
->dev
;
537 u64 dev_id
= sas_dev
->device_id
;
539 dev_info(dev
, "found dev[%lld:%x] is gone\n",
540 sas_dev
->device_id
, sas_dev
->dev_type
);
542 hisi_hba
->hw
->free_device(hisi_hba
, sas_dev
);
543 device
->lldd_dev
= NULL
;
544 memset(sas_dev
, 0, sizeof(*sas_dev
));
545 sas_dev
->device_id
= dev_id
;
546 sas_dev
->dev_type
= SAS_PHY_UNUSED
;
547 sas_dev
->dev_status
= HISI_SAS_DEV_NORMAL
;
550 static int hisi_sas_queue_command(struct sas_task
*task
, gfp_t gfp_flags
)
552 return hisi_sas_task_exec(task
, gfp_flags
, 0, NULL
);
555 static int hisi_sas_control_phy(struct asd_sas_phy
*sas_phy
, enum phy_func func
,
558 struct sas_ha_struct
*sas_ha
= sas_phy
->ha
;
559 struct hisi_hba
*hisi_hba
= sas_ha
->lldd_ha
;
560 int phy_no
= sas_phy
->id
;
563 case PHY_FUNC_HARD_RESET
:
564 hisi_hba
->hw
->phy_hard_reset(hisi_hba
, phy_no
);
567 case PHY_FUNC_LINK_RESET
:
568 hisi_hba
->hw
->phy_enable(hisi_hba
, phy_no
);
569 hisi_hba
->hw
->phy_hard_reset(hisi_hba
, phy_no
);
572 case PHY_FUNC_DISABLE
:
573 hisi_hba
->hw
->phy_disable(hisi_hba
, phy_no
);
576 case PHY_FUNC_SET_LINK_RATE
:
577 case PHY_FUNC_RELEASE_SPINUP_HOLD
:
584 static void hisi_sas_task_done(struct sas_task
*task
)
586 if (!del_timer(&task
->slow_task
->timer
))
588 complete(&task
->slow_task
->completion
);
591 static void hisi_sas_tmf_timedout(unsigned long data
)
593 struct sas_task
*task
= (struct sas_task
*)data
;
595 task
->task_state_flags
|= SAS_TASK_STATE_ABORTED
;
596 complete(&task
->slow_task
->completion
);
599 #define TASK_TIMEOUT 20
601 static int hisi_sas_exec_internal_tmf_task(struct domain_device
*device
,
602 void *parameter
, u32 para_len
,
603 struct hisi_sas_tmf_task
*tmf
)
605 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
606 struct hisi_hba
*hisi_hba
= sas_dev
->hisi_hba
;
607 struct device
*dev
= &hisi_hba
->pdev
->dev
;
608 struct sas_task
*task
;
611 for (retry
= 0; retry
< TASK_RETRY
; retry
++) {
612 task
= sas_alloc_slow_task(GFP_KERNEL
);
617 task
->task_proto
= device
->tproto
;
619 memcpy(&task
->ssp_task
, parameter
, para_len
);
620 task
->task_done
= hisi_sas_task_done
;
622 task
->slow_task
->timer
.data
= (unsigned long) task
;
623 task
->slow_task
->timer
.function
= hisi_sas_tmf_timedout
;
624 task
->slow_task
->timer
.expires
= jiffies
+ TASK_TIMEOUT
*HZ
;
625 add_timer(&task
->slow_task
->timer
);
627 res
= hisi_sas_task_exec(task
, GFP_KERNEL
, 1, tmf
);
630 del_timer(&task
->slow_task
->timer
);
631 dev_err(dev
, "abort tmf: executing internal task failed: %d\n",
636 wait_for_completion(&task
->slow_task
->completion
);
637 res
= TMF_RESP_FUNC_FAILED
;
638 /* Even TMF timed out, return direct. */
639 if ((task
->task_state_flags
& SAS_TASK_STATE_ABORTED
)) {
640 if (!(task
->task_state_flags
& SAS_TASK_STATE_DONE
)) {
641 dev_err(dev
, "abort tmf: TMF task[%d] timeout\n",
642 tmf
->tag_of_task_to_be_managed
);
643 if (task
->lldd_task
) {
644 struct hisi_sas_slot
*slot
=
647 hisi_sas_slot_task_free(hisi_hba
,
655 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
656 task
->task_status
.stat
== SAM_STAT_GOOD
) {
657 res
= TMF_RESP_FUNC_COMPLETE
;
661 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
662 task
->task_status
.stat
== SAS_DATA_UNDERRUN
) {
663 /* no error, but return the number of bytes of
666 dev_warn(dev
, "abort tmf: task to dev %016llx "
667 "resp: 0x%x sts 0x%x underrun\n",
668 SAS_ADDR(device
->sas_addr
),
669 task
->task_status
.resp
,
670 task
->task_status
.stat
);
671 res
= task
->task_status
.residual
;
675 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
676 task
->task_status
.stat
== SAS_DATA_OVERRUN
) {
677 dev_warn(dev
, "abort tmf: blocked task error\n");
682 dev_warn(dev
, "abort tmf: task to dev "
683 "%016llx resp: 0x%x status 0x%x\n",
684 SAS_ADDR(device
->sas_addr
), task
->task_status
.resp
,
685 task
->task_status
.stat
);
690 WARN_ON(retry
== TASK_RETRY
);
695 static int hisi_sas_debug_issue_ssp_tmf(struct domain_device
*device
,
696 u8
*lun
, struct hisi_sas_tmf_task
*tmf
)
698 struct sas_ssp_task ssp_task
;
700 if (!(device
->tproto
& SAS_PROTOCOL_SSP
))
701 return TMF_RESP_FUNC_ESUPP
;
703 memcpy(ssp_task
.LUN
, lun
, 8);
705 return hisi_sas_exec_internal_tmf_task(device
, &ssp_task
,
706 sizeof(ssp_task
), tmf
);
709 static int hisi_sas_abort_task(struct sas_task
*task
)
712 struct hisi_sas_tmf_task tmf_task
;
713 struct domain_device
*device
= task
->dev
;
714 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
715 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(task
->dev
);
716 struct device
*dev
= &hisi_hba
->pdev
->dev
;
717 int rc
= TMF_RESP_FUNC_FAILED
;
721 dev_warn(dev
, "Device has been removed\n");
722 return TMF_RESP_FUNC_FAILED
;
725 spin_lock_irqsave(&task
->task_state_lock
, flags
);
726 if (task
->task_state_flags
& SAS_TASK_STATE_DONE
) {
727 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
728 rc
= TMF_RESP_FUNC_COMPLETE
;
732 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
733 sas_dev
->dev_status
= HISI_SAS_DEV_EH
;
734 if (task
->lldd_task
&& task
->task_proto
& SAS_PROTOCOL_SSP
) {
735 struct scsi_cmnd
*cmnd
= task
->uldd_task
;
736 struct hisi_sas_slot
*slot
= task
->lldd_task
;
739 int_to_scsilun(cmnd
->device
->lun
, &lun
);
740 tmf_task
.tmf
= TMF_ABORT_TASK
;
741 tmf_task
.tag_of_task_to_be_managed
= cpu_to_le16(tag
);
743 rc
= hisi_sas_debug_issue_ssp_tmf(task
->dev
, lun
.scsi_lun
,
746 /* if successful, clear the task and callback forwards.*/
747 if (rc
== TMF_RESP_FUNC_COMPLETE
) {
748 if (task
->lldd_task
) {
749 struct hisi_sas_slot
*slot
;
751 slot
= &hisi_hba
->slot_info
752 [tmf_task
.tag_of_task_to_be_managed
];
753 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
754 hisi_hba
->hw
->slot_complete(hisi_hba
, slot
, 1);
755 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
759 } else if (task
->task_proto
& SAS_PROTOCOL_SATA
||
760 task
->task_proto
& SAS_PROTOCOL_STP
) {
761 if (task
->dev
->dev_type
== SAS_SATA_DEV
) {
762 struct hisi_slot_info
*slot
= task
->lldd_task
;
764 dev_notice(dev
, "abort task: hba=%p task=%p slot=%p\n",
765 hisi_hba
, task
, slot
);
766 task
->task_state_flags
|= SAS_TASK_STATE_ABORTED
;
767 rc
= TMF_RESP_FUNC_COMPLETE
;
774 if (rc
!= TMF_RESP_FUNC_COMPLETE
)
775 dev_notice(dev
, "abort task: rc=%d\n", rc
);
779 static int hisi_sas_abort_task_set(struct domain_device
*device
, u8
*lun
)
781 struct hisi_sas_tmf_task tmf_task
;
782 int rc
= TMF_RESP_FUNC_FAILED
;
784 tmf_task
.tmf
= TMF_ABORT_TASK_SET
;
785 rc
= hisi_sas_debug_issue_ssp_tmf(device
, lun
, &tmf_task
);
790 static int hisi_sas_clear_aca(struct domain_device
*device
, u8
*lun
)
792 int rc
= TMF_RESP_FUNC_FAILED
;
793 struct hisi_sas_tmf_task tmf_task
;
795 tmf_task
.tmf
= TMF_CLEAR_ACA
;
796 rc
= hisi_sas_debug_issue_ssp_tmf(device
, lun
, &tmf_task
);
801 static int hisi_sas_debug_I_T_nexus_reset(struct domain_device
*device
)
803 struct sas_phy
*phy
= sas_get_local_phy(device
);
804 int rc
, reset_type
= (device
->dev_type
== SAS_SATA_DEV
||
805 (device
->tproto
& SAS_PROTOCOL_STP
)) ? 0 : 1;
806 rc
= sas_phy_reset(phy
, reset_type
);
807 sas_put_local_phy(phy
);
812 static int hisi_sas_I_T_nexus_reset(struct domain_device
*device
)
814 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
815 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
817 int rc
= TMF_RESP_FUNC_FAILED
;
819 if (sas_dev
->dev_status
!= HISI_SAS_DEV_EH
)
820 return TMF_RESP_FUNC_FAILED
;
821 sas_dev
->dev_status
= HISI_SAS_DEV_NORMAL
;
823 rc
= hisi_sas_debug_I_T_nexus_reset(device
);
825 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
826 hisi_sas_release_task(hisi_hba
, device
);
827 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
832 static int hisi_sas_lu_reset(struct domain_device
*device
, u8
*lun
)
834 struct hisi_sas_tmf_task tmf_task
;
835 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
836 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
837 struct device
*dev
= &hisi_hba
->pdev
->dev
;
839 int rc
= TMF_RESP_FUNC_FAILED
;
841 tmf_task
.tmf
= TMF_LU_RESET
;
842 sas_dev
->dev_status
= HISI_SAS_DEV_EH
;
843 rc
= hisi_sas_debug_issue_ssp_tmf(device
, lun
, &tmf_task
);
844 if (rc
== TMF_RESP_FUNC_COMPLETE
) {
845 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
846 hisi_sas_release_task(hisi_hba
, device
);
847 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
850 /* If failed, fall-through I_T_Nexus reset */
851 dev_err(dev
, "lu_reset: for device[%llx]:rc= %d\n",
852 sas_dev
->device_id
, rc
);
856 static int hisi_sas_query_task(struct sas_task
*task
)
859 struct hisi_sas_tmf_task tmf_task
;
860 int rc
= TMF_RESP_FUNC_FAILED
;
862 if (task
->lldd_task
&& task
->task_proto
& SAS_PROTOCOL_SSP
) {
863 struct scsi_cmnd
*cmnd
= task
->uldd_task
;
864 struct domain_device
*device
= task
->dev
;
865 struct hisi_sas_slot
*slot
= task
->lldd_task
;
868 int_to_scsilun(cmnd
->device
->lun
, &lun
);
869 tmf_task
.tmf
= TMF_QUERY_TASK
;
870 tmf_task
.tag_of_task_to_be_managed
= cpu_to_le16(tag
);
872 rc
= hisi_sas_debug_issue_ssp_tmf(device
,
876 /* The task is still in Lun, release it then */
877 case TMF_RESP_FUNC_SUCC
:
878 /* The task is not in Lun or failed, reset the phy */
879 case TMF_RESP_FUNC_FAILED
:
880 case TMF_RESP_FUNC_COMPLETE
:
887 static void hisi_sas_port_formed(struct asd_sas_phy
*sas_phy
)
889 hisi_sas_port_notify_formed(sas_phy
);
892 static void hisi_sas_port_deformed(struct asd_sas_phy
*sas_phy
)
894 hisi_sas_port_notify_deformed(sas_phy
);
897 static void hisi_sas_phy_disconnected(struct hisi_sas_phy
*phy
)
899 phy
->phy_attached
= 0;
904 void hisi_sas_phy_down(struct hisi_hba
*hisi_hba
, int phy_no
, int rdy
)
906 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
907 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
908 struct sas_ha_struct
*sas_ha
= &hisi_hba
->sha
;
911 /* Phy down but ready */
912 hisi_sas_bytes_dmaed(hisi_hba
, phy_no
);
913 hisi_sas_port_notify_formed(sas_phy
);
915 struct hisi_sas_port
*port
= phy
->port
;
917 /* Phy down and not ready */
918 sas_ha
->notify_phy_event(sas_phy
, PHYE_LOSS_OF_SIGNAL
);
919 sas_phy_disconnected(sas_phy
);
922 if (phy
->phy_type
& PORT_TYPE_SAS
) {
923 int port_id
= port
->id
;
925 if (!hisi_hba
->hw
->get_wideport_bitmap(hisi_hba
,
927 port
->port_attached
= 0;
928 } else if (phy
->phy_type
& PORT_TYPE_SATA
)
929 port
->port_attached
= 0;
931 hisi_sas_phy_disconnected(phy
);
934 EXPORT_SYMBOL_GPL(hisi_sas_phy_down
);
936 static struct scsi_transport_template
*hisi_sas_stt
;
938 static struct scsi_host_template hisi_sas_sht
= {
939 .module
= THIS_MODULE
,
941 .queuecommand
= sas_queuecommand
,
942 .target_alloc
= sas_target_alloc
,
943 .slave_configure
= sas_slave_configure
,
944 .scan_finished
= hisi_sas_scan_finished
,
945 .scan_start
= hisi_sas_scan_start
,
946 .change_queue_depth
= sas_change_queue_depth
,
947 .bios_param
= sas_bios_param
,
950 .sg_tablesize
= SG_ALL
,
951 .max_sectors
= SCSI_DEFAULT_MAX_SECTORS
,
952 .use_clustering
= ENABLE_CLUSTERING
,
953 .eh_device_reset_handler
= sas_eh_device_reset_handler
,
954 .eh_bus_reset_handler
= sas_eh_bus_reset_handler
,
955 .target_destroy
= sas_target_destroy
,
959 static struct sas_domain_function_template hisi_sas_transport_ops
= {
960 .lldd_dev_found
= hisi_sas_dev_found
,
961 .lldd_dev_gone
= hisi_sas_dev_gone
,
962 .lldd_execute_task
= hisi_sas_queue_command
,
963 .lldd_control_phy
= hisi_sas_control_phy
,
964 .lldd_abort_task
= hisi_sas_abort_task
,
965 .lldd_abort_task_set
= hisi_sas_abort_task_set
,
966 .lldd_clear_aca
= hisi_sas_clear_aca
,
967 .lldd_I_T_nexus_reset
= hisi_sas_I_T_nexus_reset
,
968 .lldd_lu_reset
= hisi_sas_lu_reset
,
969 .lldd_query_task
= hisi_sas_query_task
,
970 .lldd_port_formed
= hisi_sas_port_formed
,
971 .lldd_port_deformed
= hisi_sas_port_deformed
,
974 static int hisi_sas_alloc(struct hisi_hba
*hisi_hba
, struct Scsi_Host
*shost
)
977 struct platform_device
*pdev
= hisi_hba
->pdev
;
978 struct device
*dev
= &pdev
->dev
;
980 spin_lock_init(&hisi_hba
->lock
);
981 for (i
= 0; i
< hisi_hba
->n_phy
; i
++) {
982 hisi_sas_phy_init(hisi_hba
, i
);
983 hisi_hba
->port
[i
].port_attached
= 0;
984 hisi_hba
->port
[i
].id
= -1;
985 INIT_LIST_HEAD(&hisi_hba
->port
[i
].list
);
988 for (i
= 0; i
< HISI_SAS_MAX_DEVICES
; i
++) {
989 hisi_hba
->devices
[i
].dev_type
= SAS_PHY_UNUSED
;
990 hisi_hba
->devices
[i
].device_id
= i
;
991 hisi_hba
->devices
[i
].dev_status
= HISI_SAS_DEV_NORMAL
;
994 for (i
= 0; i
< hisi_hba
->queue_count
; i
++) {
995 struct hisi_sas_cq
*cq
= &hisi_hba
->cq
[i
];
997 /* Completion queue structure */
999 cq
->hisi_hba
= hisi_hba
;
1001 /* Delivery queue */
1002 s
= sizeof(struct hisi_sas_cmd_hdr
) * HISI_SAS_QUEUE_SLOTS
;
1003 hisi_hba
->cmd_hdr
[i
] = dma_alloc_coherent(dev
, s
,
1004 &hisi_hba
->cmd_hdr_dma
[i
], GFP_KERNEL
);
1005 if (!hisi_hba
->cmd_hdr
[i
])
1007 memset(hisi_hba
->cmd_hdr
[i
], 0, s
);
1009 /* Completion queue */
1010 s
= hisi_hba
->hw
->complete_hdr_size
* HISI_SAS_QUEUE_SLOTS
;
1011 hisi_hba
->complete_hdr
[i
] = dma_alloc_coherent(dev
, s
,
1012 &hisi_hba
->complete_hdr_dma
[i
], GFP_KERNEL
);
1013 if (!hisi_hba
->complete_hdr
[i
])
1015 memset(hisi_hba
->complete_hdr
[i
], 0, s
);
1018 s
= HISI_SAS_STATUS_BUF_SZ
;
1019 hisi_hba
->status_buffer_pool
= dma_pool_create("status_buffer",
1021 if (!hisi_hba
->status_buffer_pool
)
1024 s
= HISI_SAS_COMMAND_TABLE_SZ
;
1025 hisi_hba
->command_table_pool
= dma_pool_create("command_table",
1027 if (!hisi_hba
->command_table_pool
)
1030 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_itct
);
1031 hisi_hba
->itct
= dma_alloc_coherent(dev
, s
, &hisi_hba
->itct_dma
,
1033 if (!hisi_hba
->itct
)
1036 memset(hisi_hba
->itct
, 0, s
);
1038 hisi_hba
->slot_info
= devm_kcalloc(dev
, HISI_SAS_COMMAND_ENTRIES
,
1039 sizeof(struct hisi_sas_slot
),
1041 if (!hisi_hba
->slot_info
)
1044 s
= HISI_SAS_COMMAND_ENTRIES
* sizeof(struct hisi_sas_iost
);
1045 hisi_hba
->iost
= dma_alloc_coherent(dev
, s
, &hisi_hba
->iost_dma
,
1047 if (!hisi_hba
->iost
)
1050 memset(hisi_hba
->iost
, 0, s
);
1052 s
= HISI_SAS_COMMAND_ENTRIES
* sizeof(struct hisi_sas_breakpoint
);
1053 hisi_hba
->breakpoint
= dma_alloc_coherent(dev
, s
,
1054 &hisi_hba
->breakpoint_dma
, GFP_KERNEL
);
1055 if (!hisi_hba
->breakpoint
)
1058 memset(hisi_hba
->breakpoint
, 0, s
);
1060 hisi_hba
->slot_index_count
= HISI_SAS_COMMAND_ENTRIES
;
1061 s
= hisi_hba
->slot_index_count
/ sizeof(unsigned long);
1062 hisi_hba
->slot_index_tags
= devm_kzalloc(dev
, s
, GFP_KERNEL
);
1063 if (!hisi_hba
->slot_index_tags
)
1066 hisi_hba
->sge_page_pool
= dma_pool_create("status_sge", dev
,
1067 sizeof(struct hisi_sas_sge_page
), 16, 0);
1068 if (!hisi_hba
->sge_page_pool
)
1071 s
= sizeof(struct hisi_sas_initial_fis
) * HISI_SAS_MAX_PHYS
;
1072 hisi_hba
->initial_fis
= dma_alloc_coherent(dev
, s
,
1073 &hisi_hba
->initial_fis_dma
, GFP_KERNEL
);
1074 if (!hisi_hba
->initial_fis
)
1076 memset(hisi_hba
->initial_fis
, 0, s
);
1078 s
= HISI_SAS_COMMAND_ENTRIES
* sizeof(struct hisi_sas_breakpoint
) * 2;
1079 hisi_hba
->sata_breakpoint
= dma_alloc_coherent(dev
, s
,
1080 &hisi_hba
->sata_breakpoint_dma
, GFP_KERNEL
);
1081 if (!hisi_hba
->sata_breakpoint
)
1083 memset(hisi_hba
->sata_breakpoint
, 0, s
);
1085 hisi_sas_slot_index_init(hisi_hba
);
1087 hisi_hba
->wq
= create_singlethread_workqueue(dev_name(dev
));
1088 if (!hisi_hba
->wq
) {
1089 dev_err(dev
, "sas_alloc: failed to create workqueue\n");
1098 static void hisi_sas_free(struct hisi_hba
*hisi_hba
)
1100 struct device
*dev
= &hisi_hba
->pdev
->dev
;
1103 for (i
= 0; i
< hisi_hba
->queue_count
; i
++) {
1104 s
= sizeof(struct hisi_sas_cmd_hdr
) * HISI_SAS_QUEUE_SLOTS
;
1105 if (hisi_hba
->cmd_hdr
[i
])
1106 dma_free_coherent(dev
, s
,
1107 hisi_hba
->cmd_hdr
[i
],
1108 hisi_hba
->cmd_hdr_dma
[i
]);
1110 s
= hisi_hba
->hw
->complete_hdr_size
* HISI_SAS_QUEUE_SLOTS
;
1111 if (hisi_hba
->complete_hdr
[i
])
1112 dma_free_coherent(dev
, s
,
1113 hisi_hba
->complete_hdr
[i
],
1114 hisi_hba
->complete_hdr_dma
[i
]);
1117 dma_pool_destroy(hisi_hba
->status_buffer_pool
);
1118 dma_pool_destroy(hisi_hba
->command_table_pool
);
1119 dma_pool_destroy(hisi_hba
->sge_page_pool
);
1121 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_itct
);
1123 dma_free_coherent(dev
, s
,
1124 hisi_hba
->itct
, hisi_hba
->itct_dma
);
1126 s
= HISI_SAS_COMMAND_ENTRIES
* sizeof(struct hisi_sas_iost
);
1128 dma_free_coherent(dev
, s
,
1129 hisi_hba
->iost
, hisi_hba
->iost_dma
);
1131 s
= HISI_SAS_COMMAND_ENTRIES
* sizeof(struct hisi_sas_breakpoint
);
1132 if (hisi_hba
->breakpoint
)
1133 dma_free_coherent(dev
, s
,
1134 hisi_hba
->breakpoint
,
1135 hisi_hba
->breakpoint_dma
);
1138 s
= sizeof(struct hisi_sas_initial_fis
) * HISI_SAS_MAX_PHYS
;
1139 if (hisi_hba
->initial_fis
)
1140 dma_free_coherent(dev
, s
,
1141 hisi_hba
->initial_fis
,
1142 hisi_hba
->initial_fis_dma
);
1144 s
= HISI_SAS_COMMAND_ENTRIES
* sizeof(struct hisi_sas_breakpoint
) * 2;
1145 if (hisi_hba
->sata_breakpoint
)
1146 dma_free_coherent(dev
, s
,
1147 hisi_hba
->sata_breakpoint
,
1148 hisi_hba
->sata_breakpoint_dma
);
1151 destroy_workqueue(hisi_hba
->wq
);
1154 static struct Scsi_Host
*hisi_sas_shost_alloc(struct platform_device
*pdev
,
1155 const struct hisi_sas_hw
*hw
)
1157 struct resource
*res
;
1158 struct Scsi_Host
*shost
;
1159 struct hisi_hba
*hisi_hba
;
1160 struct device
*dev
= &pdev
->dev
;
1161 struct device_node
*np
= pdev
->dev
.of_node
;
1162 struct property
*sas_addr_prop
;
1164 shost
= scsi_host_alloc(&hisi_sas_sht
, sizeof(*hisi_hba
));
1167 hisi_hba
= shost_priv(shost
);
1170 hisi_hba
->pdev
= pdev
;
1171 hisi_hba
->shost
= shost
;
1172 SHOST_TO_SAS_HA(shost
) = &hisi_hba
->sha
;
1174 init_timer(&hisi_hba
->timer
);
1176 sas_addr_prop
= of_find_property(np
, "sas-addr", NULL
);
1177 if (!sas_addr_prop
|| (sas_addr_prop
->length
!= SAS_ADDR_SIZE
))
1179 memcpy(hisi_hba
->sas_addr
, sas_addr_prop
->value
, SAS_ADDR_SIZE
);
1181 if (of_property_read_u32(np
, "ctrl-reset-reg",
1182 &hisi_hba
->ctrl_reset_reg
))
1185 if (of_property_read_u32(np
, "ctrl-reset-sts-reg",
1186 &hisi_hba
->ctrl_reset_sts_reg
))
1189 if (of_property_read_u32(np
, "ctrl-clock-ena-reg",
1190 &hisi_hba
->ctrl_clock_ena_reg
))
1193 if (of_property_read_u32(np
, "phy-count", &hisi_hba
->n_phy
))
1196 if (of_property_read_u32(np
, "queue-count", &hisi_hba
->queue_count
))
1199 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
1200 hisi_hba
->regs
= devm_ioremap_resource(dev
, res
);
1201 if (IS_ERR(hisi_hba
->regs
))
1204 hisi_hba
->ctrl
= syscon_regmap_lookup_by_phandle(
1205 np
, "hisilicon,sas-syscon");
1206 if (IS_ERR(hisi_hba
->ctrl
))
1209 if (hisi_sas_alloc(hisi_hba
, shost
)) {
1210 hisi_sas_free(hisi_hba
);
1216 dev_err(dev
, "shost alloc failed\n");
1220 static void hisi_sas_init_add(struct hisi_hba
*hisi_hba
)
1224 for (i
= 0; i
< hisi_hba
->n_phy
; i
++)
1225 memcpy(&hisi_hba
->phy
[i
].dev_sas_addr
,
1230 int hisi_sas_probe(struct platform_device
*pdev
,
1231 const struct hisi_sas_hw
*hw
)
1233 struct Scsi_Host
*shost
;
1234 struct hisi_hba
*hisi_hba
;
1235 struct device
*dev
= &pdev
->dev
;
1236 struct asd_sas_phy
**arr_phy
;
1237 struct asd_sas_port
**arr_port
;
1238 struct sas_ha_struct
*sha
;
1239 int rc
, phy_nr
, port_nr
, i
;
1241 shost
= hisi_sas_shost_alloc(pdev
, hw
);
1247 sha
= SHOST_TO_SAS_HA(shost
);
1248 hisi_hba
= shost_priv(shost
);
1249 platform_set_drvdata(pdev
, sha
);
1251 if (dma_set_mask_and_coherent(dev
, DMA_BIT_MASK(64)) &&
1252 dma_set_mask_and_coherent(dev
, DMA_BIT_MASK(32))) {
1253 dev_err(dev
, "No usable DMA addressing method\n");
1258 phy_nr
= port_nr
= hisi_hba
->n_phy
;
1260 arr_phy
= devm_kcalloc(dev
, phy_nr
, sizeof(void *), GFP_KERNEL
);
1261 arr_port
= devm_kcalloc(dev
, port_nr
, sizeof(void *), GFP_KERNEL
);
1262 if (!arr_phy
|| !arr_port
)
1265 sha
->sas_phy
= arr_phy
;
1266 sha
->sas_port
= arr_port
;
1267 sha
->core
.shost
= shost
;
1268 sha
->lldd_ha
= hisi_hba
;
1270 shost
->transportt
= hisi_sas_stt
;
1271 shost
->max_id
= HISI_SAS_MAX_DEVICES
;
1272 shost
->max_lun
= ~0;
1273 shost
->max_channel
= 1;
1274 shost
->max_cmd_len
= 16;
1275 shost
->sg_tablesize
= min_t(u16
, SG_ALL
, HISI_SAS_SGE_PAGE_CNT
);
1276 shost
->can_queue
= HISI_SAS_COMMAND_ENTRIES
;
1277 shost
->cmd_per_lun
= HISI_SAS_COMMAND_ENTRIES
;
1279 sha
->sas_ha_name
= DRV_NAME
;
1280 sha
->dev
= &hisi_hba
->pdev
->dev
;
1281 sha
->lldd_module
= THIS_MODULE
;
1282 sha
->sas_addr
= &hisi_hba
->sas_addr
[0];
1283 sha
->num_phys
= hisi_hba
->n_phy
;
1284 sha
->core
.shost
= hisi_hba
->shost
;
1286 for (i
= 0; i
< hisi_hba
->n_phy
; i
++) {
1287 sha
->sas_phy
[i
] = &hisi_hba
->phy
[i
].sas_phy
;
1288 sha
->sas_port
[i
] = &hisi_hba
->port
[i
].sas_port
;
1291 hisi_sas_init_add(hisi_hba
);
1293 rc
= hisi_hba
->hw
->hw_init(hisi_hba
);
1297 rc
= scsi_add_host(shost
, &pdev
->dev
);
1301 rc
= sas_register_ha(sha
);
1303 goto err_out_register_ha
;
1305 scsi_scan_host(shost
);
1309 err_out_register_ha
:
1310 scsi_remove_host(shost
);
1315 EXPORT_SYMBOL_GPL(hisi_sas_probe
);
1317 int hisi_sas_remove(struct platform_device
*pdev
)
1319 struct sas_ha_struct
*sha
= platform_get_drvdata(pdev
);
1320 struct hisi_hba
*hisi_hba
= sha
->lldd_ha
;
1322 scsi_remove_host(sha
->core
.shost
);
1323 sas_unregister_ha(sha
);
1324 sas_remove_host(sha
->core
.shost
);
1326 hisi_sas_free(hisi_hba
);
1329 EXPORT_SYMBOL_GPL(hisi_sas_remove
);
1331 static __init
int hisi_sas_init(void)
1333 pr_info("hisi_sas: driver version %s\n", DRV_VERSION
);
1335 hisi_sas_stt
= sas_domain_attach_transport(&hisi_sas_transport_ops
);
1342 static __exit
void hisi_sas_exit(void)
1344 sas_release_transport(hisi_sas_stt
);
1347 module_init(hisi_sas_init
);
1348 module_exit(hisi_sas_exit
);
1350 MODULE_VERSION(DRV_VERSION
);
1351 MODULE_LICENSE("GPL");
1352 MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
1353 MODULE_DESCRIPTION("HISILICON SAS controller driver");
1354 MODULE_ALIAS("platform:" DRV_NAME
);