2 * Copyright (c) 2015 Linaro Ltd.
3 * Copyright (c) 2015 Hisilicon Limited.
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
13 #define DRV_NAME "hisi_sas"
15 #define DEV_IS_GONE(dev) \
16 ((!dev) || (dev->dev_type == SAS_PHY_UNUSED))
18 static int hisi_sas_debug_issue_ssp_tmf(struct domain_device
*device
,
19 u8
*lun
, struct hisi_sas_tmf_task
*tmf
);
21 hisi_sas_internal_task_abort(struct hisi_hba
*hisi_hba
,
22 struct domain_device
*device
,
23 int abort_flag
, int tag
);
24 static int hisi_sas_softreset_ata_disk(struct domain_device
*device
);
26 u8
hisi_sas_get_ata_protocol(u8 cmd
, int direction
)
29 case ATA_CMD_FPDMA_WRITE
:
30 case ATA_CMD_FPDMA_READ
:
31 case ATA_CMD_FPDMA_RECV
:
32 case ATA_CMD_FPDMA_SEND
:
33 case ATA_CMD_NCQ_NON_DATA
:
34 return HISI_SAS_SATA_PROTOCOL_FPDMA
;
36 case ATA_CMD_DOWNLOAD_MICRO
:
38 case ATA_CMD_PMP_READ
:
39 case ATA_CMD_READ_LOG_EXT
:
40 case ATA_CMD_PIO_READ
:
41 case ATA_CMD_PIO_READ_EXT
:
42 case ATA_CMD_PMP_WRITE
:
43 case ATA_CMD_WRITE_LOG_EXT
:
44 case ATA_CMD_PIO_WRITE
:
45 case ATA_CMD_PIO_WRITE_EXT
:
46 return HISI_SAS_SATA_PROTOCOL_PIO
;
49 case ATA_CMD_DOWNLOAD_MICRO_DMA
:
50 case ATA_CMD_PMP_READ_DMA
:
51 case ATA_CMD_PMP_WRITE_DMA
:
53 case ATA_CMD_READ_EXT
:
54 case ATA_CMD_READ_LOG_DMA_EXT
:
55 case ATA_CMD_READ_STREAM_DMA_EXT
:
56 case ATA_CMD_TRUSTED_RCV_DMA
:
57 case ATA_CMD_TRUSTED_SND_DMA
:
59 case ATA_CMD_WRITE_EXT
:
60 case ATA_CMD_WRITE_FUA_EXT
:
61 case ATA_CMD_WRITE_QUEUED
:
62 case ATA_CMD_WRITE_LOG_DMA_EXT
:
63 case ATA_CMD_WRITE_STREAM_DMA_EXT
:
64 case ATA_CMD_ZAC_MGMT_IN
:
65 return HISI_SAS_SATA_PROTOCOL_DMA
;
67 case ATA_CMD_CHK_POWER
:
68 case ATA_CMD_DEV_RESET
:
71 case ATA_CMD_FLUSH_EXT
:
73 case ATA_CMD_VERIFY_EXT
:
74 case ATA_CMD_SET_FEATURES
:
76 case ATA_CMD_STANDBYNOW1
:
77 case ATA_CMD_ZAC_MGMT_OUT
:
78 return HISI_SAS_SATA_PROTOCOL_NONDATA
;
80 if (direction
== DMA_NONE
)
81 return HISI_SAS_SATA_PROTOCOL_NONDATA
;
82 return HISI_SAS_SATA_PROTOCOL_PIO
;
85 EXPORT_SYMBOL_GPL(hisi_sas_get_ata_protocol
);
87 void hisi_sas_sata_done(struct sas_task
*task
,
88 struct hisi_sas_slot
*slot
)
90 struct task_status_struct
*ts
= &task
->task_status
;
91 struct ata_task_resp
*resp
= (struct ata_task_resp
*)ts
->buf
;
92 struct hisi_sas_status_buffer
*status_buf
=
93 hisi_sas_status_buf_addr_mem(slot
);
94 u8
*iu
= &status_buf
->iu
[0];
95 struct dev_to_host_fis
*d2h
= (struct dev_to_host_fis
*)iu
;
97 resp
->frame_len
= sizeof(struct dev_to_host_fis
);
98 memcpy(&resp
->ending_fis
[0], d2h
, sizeof(struct dev_to_host_fis
));
100 ts
->buf_valid_size
= sizeof(*resp
);
102 EXPORT_SYMBOL_GPL(hisi_sas_sata_done
);
104 int hisi_sas_get_ncq_tag(struct sas_task
*task
, u32
*tag
)
106 struct ata_queued_cmd
*qc
= task
->uldd_task
;
109 if (qc
->tf
.command
== ATA_CMD_FPDMA_WRITE
||
110 qc
->tf
.command
== ATA_CMD_FPDMA_READ
) {
117 EXPORT_SYMBOL_GPL(hisi_sas_get_ncq_tag
);
119 static struct hisi_hba
*dev_to_hisi_hba(struct domain_device
*device
)
121 return device
->port
->ha
->lldd_ha
;
124 struct hisi_sas_port
*to_hisi_sas_port(struct asd_sas_port
*sas_port
)
126 return container_of(sas_port
, struct hisi_sas_port
, sas_port
);
128 EXPORT_SYMBOL_GPL(to_hisi_sas_port
);
130 void hisi_sas_stop_phys(struct hisi_hba
*hisi_hba
)
134 for (phy_no
= 0; phy_no
< hisi_hba
->n_phy
; phy_no
++)
135 hisi_hba
->hw
->phy_disable(hisi_hba
, phy_no
);
137 EXPORT_SYMBOL_GPL(hisi_sas_stop_phys
);
139 static void hisi_sas_slot_index_clear(struct hisi_hba
*hisi_hba
, int slot_idx
)
141 void *bitmap
= hisi_hba
->slot_index_tags
;
143 clear_bit(slot_idx
, bitmap
);
146 static void hisi_sas_slot_index_free(struct hisi_hba
*hisi_hba
, int slot_idx
)
148 hisi_sas_slot_index_clear(hisi_hba
, slot_idx
);
151 static void hisi_sas_slot_index_set(struct hisi_hba
*hisi_hba
, int slot_idx
)
153 void *bitmap
= hisi_hba
->slot_index_tags
;
155 set_bit(slot_idx
, bitmap
);
158 static int hisi_sas_slot_index_alloc(struct hisi_hba
*hisi_hba
, int *slot_idx
)
161 void *bitmap
= hisi_hba
->slot_index_tags
;
163 index
= find_first_zero_bit(bitmap
, hisi_hba
->slot_index_count
);
164 if (index
>= hisi_hba
->slot_index_count
)
165 return -SAS_QUEUE_FULL
;
166 hisi_sas_slot_index_set(hisi_hba
, index
);
171 static void hisi_sas_slot_index_init(struct hisi_hba
*hisi_hba
)
175 for (i
= 0; i
< hisi_hba
->slot_index_count
; ++i
)
176 hisi_sas_slot_index_clear(hisi_hba
, i
);
179 void hisi_sas_slot_task_free(struct hisi_hba
*hisi_hba
, struct sas_task
*task
,
180 struct hisi_sas_slot
*slot
)
184 struct device
*dev
= hisi_hba
->dev
;
185 struct domain_device
*device
= task
->dev
;
186 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
188 if (!task
->lldd_task
)
191 task
->lldd_task
= NULL
;
193 if (!sas_protocol_ata(task
->task_proto
))
195 dma_unmap_sg(dev
, task
->scatter
, slot
->n_elem
,
199 atomic64_dec(&sas_dev
->running_req
);
203 dma_pool_free(hisi_hba
->buffer_pool
, slot
->buf
, slot
->buf_dma
);
205 list_del_init(&slot
->entry
);
209 hisi_sas_slot_index_free(hisi_hba
, slot
->idx
);
211 /* slot memory is fully zeroed when it is reused */
213 EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free
);
215 static int hisi_sas_task_prep_smp(struct hisi_hba
*hisi_hba
,
216 struct hisi_sas_slot
*slot
)
218 return hisi_hba
->hw
->prep_smp(hisi_hba
, slot
);
221 static int hisi_sas_task_prep_ssp(struct hisi_hba
*hisi_hba
,
222 struct hisi_sas_slot
*slot
, int is_tmf
,
223 struct hisi_sas_tmf_task
*tmf
)
225 return hisi_hba
->hw
->prep_ssp(hisi_hba
, slot
, is_tmf
, tmf
);
228 static int hisi_sas_task_prep_ata(struct hisi_hba
*hisi_hba
,
229 struct hisi_sas_slot
*slot
)
231 return hisi_hba
->hw
->prep_stp(hisi_hba
, slot
);
234 static int hisi_sas_task_prep_abort(struct hisi_hba
*hisi_hba
,
235 struct hisi_sas_slot
*slot
,
236 int device_id
, int abort_flag
, int tag_to_abort
)
238 return hisi_hba
->hw
->prep_abort(hisi_hba
, slot
,
239 device_id
, abort_flag
, tag_to_abort
);
243 * This function will issue an abort TMF regardless of whether the
244 * task is in the sdev or not. Then it will do the task complete
245 * cleanup and callbacks.
247 static void hisi_sas_slot_abort(struct work_struct
*work
)
249 struct hisi_sas_slot
*abort_slot
=
250 container_of(work
, struct hisi_sas_slot
, abort_slot
);
251 struct sas_task
*task
= abort_slot
->task
;
252 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(task
->dev
);
253 struct scsi_cmnd
*cmnd
= task
->uldd_task
;
254 struct hisi_sas_tmf_task tmf_task
;
256 struct device
*dev
= hisi_hba
->dev
;
257 int tag
= abort_slot
->idx
;
260 if (!(task
->task_proto
& SAS_PROTOCOL_SSP
)) {
261 dev_err(dev
, "cannot abort slot for non-ssp task\n");
265 int_to_scsilun(cmnd
->device
->lun
, &lun
);
266 tmf_task
.tmf
= TMF_ABORT_TASK
;
267 tmf_task
.tag_of_task_to_be_managed
= cpu_to_le16(tag
);
269 hisi_sas_debug_issue_ssp_tmf(task
->dev
, lun
.scsi_lun
, &tmf_task
);
271 /* Do cleanup for this task */
272 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
273 hisi_sas_slot_task_free(hisi_hba
, task
, abort_slot
);
274 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
276 task
->task_done(task
);
279 static int hisi_sas_task_prep(struct sas_task
*task
, struct hisi_sas_dq
280 *dq
, int is_tmf
, struct hisi_sas_tmf_task
*tmf
,
283 struct hisi_hba
*hisi_hba
= dq
->hisi_hba
;
284 struct domain_device
*device
= task
->dev
;
285 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
286 struct hisi_sas_port
*port
;
287 struct hisi_sas_slot
*slot
;
288 struct hisi_sas_cmd_hdr
*cmd_hdr_base
;
289 struct asd_sas_port
*sas_port
= device
->port
;
290 struct device
*dev
= hisi_hba
->dev
;
291 int dlvry_queue_slot
, dlvry_queue
, n_elem
= 0, rc
, slot_idx
;
295 struct task_status_struct
*ts
= &task
->task_status
;
297 ts
->resp
= SAS_TASK_UNDELIVERED
;
298 ts
->stat
= SAS_PHY_DOWN
;
300 * libsas will use dev->port, should
301 * not call task_done for sata
303 if (device
->dev_type
!= SAS_SATA_DEV
)
304 task
->task_done(task
);
308 if (DEV_IS_GONE(sas_dev
)) {
310 dev_info(dev
, "task prep: device %d not ready\n",
313 dev_info(dev
, "task prep: device %016llx not ready\n",
314 SAS_ADDR(device
->sas_addr
));
319 port
= to_hisi_sas_port(sas_port
);
320 if (port
&& !port
->port_attached
) {
321 dev_info(dev
, "task prep: %s port%d not attach device\n",
322 (dev_is_sata(device
)) ?
329 if (!sas_protocol_ata(task
->task_proto
)) {
330 if (task
->num_scatter
) {
331 n_elem
= dma_map_sg(dev
, task
->scatter
,
332 task
->num_scatter
, task
->data_dir
);
339 n_elem
= task
->num_scatter
;
341 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
342 if (hisi_hba
->hw
->slot_index_alloc
)
343 rc
= hisi_hba
->hw
->slot_index_alloc(hisi_hba
, &slot_idx
,
346 rc
= hisi_sas_slot_index_alloc(hisi_hba
, &slot_idx
);
348 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
351 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
353 rc
= hisi_hba
->hw
->get_free_slot(hisi_hba
, dq
);
357 dlvry_queue
= dq
->id
;
358 dlvry_queue_slot
= dq
->wr_point
;
359 slot
= &hisi_hba
->slot_info
[slot_idx
];
360 memset(slot
, 0, sizeof(struct hisi_sas_slot
));
362 slot
->idx
= slot_idx
;
363 slot
->n_elem
= n_elem
;
364 slot
->dlvry_queue
= dlvry_queue
;
365 slot
->dlvry_queue_slot
= dlvry_queue_slot
;
366 cmd_hdr_base
= hisi_hba
->cmd_hdr
[dlvry_queue
];
367 slot
->cmd_hdr
= &cmd_hdr_base
[dlvry_queue_slot
];
370 task
->lldd_task
= slot
;
371 INIT_WORK(&slot
->abort_slot
, hisi_sas_slot_abort
);
373 slot
->buf
= dma_pool_alloc(hisi_hba
->buffer_pool
,
374 GFP_ATOMIC
, &slot
->buf_dma
);
377 goto err_out_slot_buf
;
379 memset(slot
->cmd_hdr
, 0, sizeof(struct hisi_sas_cmd_hdr
));
380 memset(hisi_sas_cmd_hdr_addr_mem(slot
), 0, HISI_SAS_COMMAND_TABLE_SZ
);
381 memset(hisi_sas_status_buf_addr_mem(slot
), 0, HISI_SAS_STATUS_BUF_SZ
);
383 switch (task
->task_proto
) {
384 case SAS_PROTOCOL_SMP
:
385 rc
= hisi_sas_task_prep_smp(hisi_hba
, slot
);
387 case SAS_PROTOCOL_SSP
:
388 rc
= hisi_sas_task_prep_ssp(hisi_hba
, slot
, is_tmf
, tmf
);
390 case SAS_PROTOCOL_SATA
:
391 case SAS_PROTOCOL_STP
:
392 case SAS_PROTOCOL_SATA
| SAS_PROTOCOL_STP
:
393 rc
= hisi_sas_task_prep_ata(hisi_hba
, slot
);
396 dev_err(dev
, "task prep: unknown/unsupported proto (0x%x)\n",
403 dev_err(dev
, "task prep: rc = 0x%x\n", rc
);
407 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
408 list_add_tail(&slot
->entry
, &sas_dev
->list
);
409 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
410 spin_lock_irqsave(&task
->task_state_lock
, flags
);
411 task
->task_state_flags
|= SAS_TASK_AT_INITIATOR
;
412 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
414 dq
->slot_prep
= slot
;
416 atomic64_inc(&sas_dev
->running_req
);
422 dma_pool_free(hisi_hba
->buffer_pool
, slot
->buf
,
425 /* Nothing to be done */
427 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
428 hisi_sas_slot_index_free(hisi_hba
, slot_idx
);
429 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
431 dev_err(dev
, "task prep: failed[%d]!\n", rc
);
432 if (!sas_protocol_ata(task
->task_proto
))
434 dma_unmap_sg(dev
, task
->scatter
, n_elem
,
440 static int hisi_sas_task_exec(struct sas_task
*task
, gfp_t gfp_flags
,
441 int is_tmf
, struct hisi_sas_tmf_task
*tmf
)
446 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(task
->dev
);
447 struct device
*dev
= hisi_hba
->dev
;
448 struct domain_device
*device
= task
->dev
;
449 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
450 struct hisi_sas_dq
*dq
= sas_dev
->dq
;
452 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT
, &hisi_hba
->flags
)))
455 /* protect task_prep and start_delivery sequence */
456 spin_lock_irqsave(&dq
->lock
, flags
);
457 rc
= hisi_sas_task_prep(task
, dq
, is_tmf
, tmf
, &pass
);
459 dev_err(dev
, "task exec: failed[%d]!\n", rc
);
462 hisi_hba
->hw
->start_delivery(dq
);
463 spin_unlock_irqrestore(&dq
->lock
, flags
);
468 static void hisi_sas_bytes_dmaed(struct hisi_hba
*hisi_hba
, int phy_no
)
470 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
471 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
472 struct sas_ha_struct
*sas_ha
;
474 if (!phy
->phy_attached
)
477 sas_ha
= &hisi_hba
->sha
;
478 sas_ha
->notify_phy_event(sas_phy
, PHYE_OOB_DONE
);
481 struct sas_phy
*sphy
= sas_phy
->phy
;
483 sphy
->negotiated_linkrate
= sas_phy
->linkrate
;
484 sphy
->minimum_linkrate_hw
= SAS_LINK_RATE_1_5_GBPS
;
485 sphy
->maximum_linkrate_hw
=
486 hisi_hba
->hw
->phy_get_max_linkrate();
487 if (sphy
->minimum_linkrate
== SAS_LINK_RATE_UNKNOWN
)
488 sphy
->minimum_linkrate
= phy
->minimum_linkrate
;
490 if (sphy
->maximum_linkrate
== SAS_LINK_RATE_UNKNOWN
)
491 sphy
->maximum_linkrate
= phy
->maximum_linkrate
;
494 if (phy
->phy_type
& PORT_TYPE_SAS
) {
495 struct sas_identify_frame
*id
;
497 id
= (struct sas_identify_frame
*)phy
->frame_rcvd
;
498 id
->dev_type
= phy
->identify
.device_type
;
499 id
->initiator_bits
= SAS_PROTOCOL_ALL
;
500 id
->target_bits
= phy
->identify
.target_port_protocols
;
501 } else if (phy
->phy_type
& PORT_TYPE_SATA
) {
505 sas_phy
->frame_rcvd_size
= phy
->frame_rcvd_size
;
506 sas_ha
->notify_port_event(sas_phy
, PORTE_BYTES_DMAED
);
509 static struct hisi_sas_device
*hisi_sas_alloc_dev(struct domain_device
*device
)
511 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
512 struct hisi_sas_device
*sas_dev
= NULL
;
516 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
517 for (i
= 0; i
< HISI_SAS_MAX_DEVICES
; i
++) {
518 if (hisi_hba
->devices
[i
].dev_type
== SAS_PHY_UNUSED
) {
519 int queue
= i
% hisi_hba
->queue_count
;
520 struct hisi_sas_dq
*dq
= &hisi_hba
->dq
[queue
];
522 hisi_hba
->devices
[i
].device_id
= i
;
523 sas_dev
= &hisi_hba
->devices
[i
];
524 sas_dev
->dev_status
= HISI_SAS_DEV_NORMAL
;
525 sas_dev
->dev_type
= device
->dev_type
;
526 sas_dev
->hisi_hba
= hisi_hba
;
527 sas_dev
->sas_device
= device
;
529 INIT_LIST_HEAD(&hisi_hba
->devices
[i
].list
);
533 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
538 static int hisi_sas_dev_found(struct domain_device
*device
)
540 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
541 struct domain_device
*parent_dev
= device
->parent
;
542 struct hisi_sas_device
*sas_dev
;
543 struct device
*dev
= hisi_hba
->dev
;
545 if (hisi_hba
->hw
->alloc_dev
)
546 sas_dev
= hisi_hba
->hw
->alloc_dev(device
);
548 sas_dev
= hisi_sas_alloc_dev(device
);
550 dev_err(dev
, "fail alloc dev: max support %d devices\n",
551 HISI_SAS_MAX_DEVICES
);
555 device
->lldd_dev
= sas_dev
;
556 hisi_hba
->hw
->setup_itct(hisi_hba
, sas_dev
);
558 if (parent_dev
&& DEV_IS_EXPANDER(parent_dev
->dev_type
)) {
560 u8 phy_num
= parent_dev
->ex_dev
.num_phys
;
563 for (phy_no
= 0; phy_no
< phy_num
; phy_no
++) {
564 phy
= &parent_dev
->ex_dev
.ex_phy
[phy_no
];
565 if (SAS_ADDR(phy
->attached_sas_addr
) ==
566 SAS_ADDR(device
->sas_addr
)) {
567 sas_dev
->attached_phy
= phy_no
;
572 if (phy_no
== phy_num
) {
573 dev_info(dev
, "dev found: no attached "
574 "dev:%016llx at ex:%016llx\n",
575 SAS_ADDR(device
->sas_addr
),
576 SAS_ADDR(parent_dev
->sas_addr
));
584 static int hisi_sas_slave_configure(struct scsi_device
*sdev
)
586 struct domain_device
*dev
= sdev_to_domain_dev(sdev
);
587 int ret
= sas_slave_configure(sdev
);
591 if (!dev_is_sata(dev
))
592 sas_change_queue_depth(sdev
, 64);
597 static void hisi_sas_scan_start(struct Scsi_Host
*shost
)
599 struct hisi_hba
*hisi_hba
= shost_priv(shost
);
601 hisi_hba
->hw
->phys_init(hisi_hba
);
604 static int hisi_sas_scan_finished(struct Scsi_Host
*shost
, unsigned long time
)
606 struct hisi_hba
*hisi_hba
= shost_priv(shost
);
607 struct sas_ha_struct
*sha
= &hisi_hba
->sha
;
609 /* Wait for PHY up interrupt to occur */
617 static void hisi_sas_phyup_work(struct work_struct
*work
)
619 struct hisi_sas_phy
*phy
=
620 container_of(work
, struct hisi_sas_phy
, phyup_ws
);
621 struct hisi_hba
*hisi_hba
= phy
->hisi_hba
;
622 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
623 int phy_no
= sas_phy
->id
;
625 hisi_hba
->hw
->sl_notify(hisi_hba
, phy_no
); /* This requires a sleep */
626 hisi_sas_bytes_dmaed(hisi_hba
, phy_no
);
629 static void hisi_sas_phy_init(struct hisi_hba
*hisi_hba
, int phy_no
)
631 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
632 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
634 phy
->hisi_hba
= hisi_hba
;
636 init_timer(&phy
->timer
);
637 sas_phy
->enabled
= (phy_no
< hisi_hba
->n_phy
) ? 1 : 0;
638 sas_phy
->class = SAS
;
639 sas_phy
->iproto
= SAS_PROTOCOL_ALL
;
641 sas_phy
->type
= PHY_TYPE_PHYSICAL
;
642 sas_phy
->role
= PHY_ROLE_INITIATOR
;
643 sas_phy
->oob_mode
= OOB_NOT_CONNECTED
;
644 sas_phy
->linkrate
= SAS_LINK_RATE_UNKNOWN
;
645 sas_phy
->id
= phy_no
;
646 sas_phy
->sas_addr
= &hisi_hba
->sas_addr
[0];
647 sas_phy
->frame_rcvd
= &phy
->frame_rcvd
[0];
648 sas_phy
->ha
= (struct sas_ha_struct
*)hisi_hba
->shost
->hostdata
;
649 sas_phy
->lldd_phy
= phy
;
651 INIT_WORK(&phy
->phyup_ws
, hisi_sas_phyup_work
);
654 static void hisi_sas_port_notify_formed(struct asd_sas_phy
*sas_phy
)
656 struct sas_ha_struct
*sas_ha
= sas_phy
->ha
;
657 struct hisi_hba
*hisi_hba
= sas_ha
->lldd_ha
;
658 struct hisi_sas_phy
*phy
= sas_phy
->lldd_phy
;
659 struct asd_sas_port
*sas_port
= sas_phy
->port
;
660 struct hisi_sas_port
*port
= to_hisi_sas_port(sas_port
);
666 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
667 port
->port_attached
= 1;
668 port
->id
= phy
->port_id
;
670 sas_port
->lldd_port
= port
;
671 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
674 static void hisi_sas_do_release_task(struct hisi_hba
*hisi_hba
, struct sas_task
*task
,
675 struct hisi_sas_slot
*slot
)
679 struct task_status_struct
*ts
;
681 ts
= &task
->task_status
;
683 ts
->resp
= SAS_TASK_COMPLETE
;
684 ts
->stat
= SAS_ABORTED_TASK
;
685 spin_lock_irqsave(&task
->task_state_lock
, flags
);
686 task
->task_state_flags
&=
687 ~(SAS_TASK_STATE_PENDING
| SAS_TASK_AT_INITIATOR
);
688 task
->task_state_flags
|= SAS_TASK_STATE_DONE
;
689 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
692 hisi_sas_slot_task_free(hisi_hba
, task
, slot
);
695 /* hisi_hba.lock should be locked */
696 static void hisi_sas_release_task(struct hisi_hba
*hisi_hba
,
697 struct domain_device
*device
)
699 struct hisi_sas_slot
*slot
, *slot2
;
700 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
702 list_for_each_entry_safe(slot
, slot2
, &sas_dev
->list
, entry
)
703 hisi_sas_do_release_task(hisi_hba
, slot
->task
, slot
);
706 static void hisi_sas_release_tasks(struct hisi_hba
*hisi_hba
)
708 struct hisi_sas_device
*sas_dev
;
709 struct domain_device
*device
;
712 for (i
= 0; i
< HISI_SAS_MAX_DEVICES
; i
++) {
713 sas_dev
= &hisi_hba
->devices
[i
];
714 device
= sas_dev
->sas_device
;
716 if ((sas_dev
->dev_type
== SAS_PHY_UNUSED
) ||
720 hisi_sas_release_task(hisi_hba
, device
);
724 static void hisi_sas_dereg_device(struct hisi_hba
*hisi_hba
,
725 struct domain_device
*device
)
727 if (hisi_hba
->hw
->dereg_device
)
728 hisi_hba
->hw
->dereg_device(hisi_hba
, device
);
731 static void hisi_sas_dev_gone(struct domain_device
*device
)
733 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
734 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
735 struct device
*dev
= hisi_hba
->dev
;
737 dev_info(dev
, "found dev[%d:%x] is gone\n",
738 sas_dev
->device_id
, sas_dev
->dev_type
);
740 hisi_sas_internal_task_abort(hisi_hba
, device
,
741 HISI_SAS_INT_ABT_DEV
, 0);
743 hisi_sas_dereg_device(hisi_hba
, device
);
745 hisi_hba
->hw
->free_device(hisi_hba
, sas_dev
);
746 device
->lldd_dev
= NULL
;
747 memset(sas_dev
, 0, sizeof(*sas_dev
));
748 sas_dev
->dev_type
= SAS_PHY_UNUSED
;
751 static int hisi_sas_queue_command(struct sas_task
*task
, gfp_t gfp_flags
)
753 return hisi_sas_task_exec(task
, gfp_flags
, 0, NULL
);
756 static int hisi_sas_control_phy(struct asd_sas_phy
*sas_phy
, enum phy_func func
,
759 struct sas_ha_struct
*sas_ha
= sas_phy
->ha
;
760 struct hisi_hba
*hisi_hba
= sas_ha
->lldd_ha
;
761 int phy_no
= sas_phy
->id
;
764 case PHY_FUNC_HARD_RESET
:
765 hisi_hba
->hw
->phy_hard_reset(hisi_hba
, phy_no
);
768 case PHY_FUNC_LINK_RESET
:
769 hisi_hba
->hw
->phy_disable(hisi_hba
, phy_no
);
771 hisi_hba
->hw
->phy_start(hisi_hba
, phy_no
);
774 case PHY_FUNC_DISABLE
:
775 hisi_hba
->hw
->phy_disable(hisi_hba
, phy_no
);
778 case PHY_FUNC_SET_LINK_RATE
:
779 hisi_hba
->hw
->phy_set_linkrate(hisi_hba
, phy_no
, funcdata
);
781 case PHY_FUNC_GET_EVENTS
:
782 if (hisi_hba
->hw
->get_events
) {
783 hisi_hba
->hw
->get_events(hisi_hba
, phy_no
);
787 case PHY_FUNC_RELEASE_SPINUP_HOLD
:
794 static void hisi_sas_task_done(struct sas_task
*task
)
796 if (!del_timer(&task
->slow_task
->timer
))
798 complete(&task
->slow_task
->completion
);
801 static void hisi_sas_tmf_timedout(unsigned long data
)
803 struct sas_task
*task
= (struct sas_task
*)data
;
806 spin_lock_irqsave(&task
->task_state_lock
, flags
);
807 if (!(task
->task_state_flags
& SAS_TASK_STATE_DONE
))
808 task
->task_state_flags
|= SAS_TASK_STATE_ABORTED
;
809 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
811 complete(&task
->slow_task
->completion
);
814 #define TASK_TIMEOUT 20
816 static int hisi_sas_exec_internal_tmf_task(struct domain_device
*device
,
817 void *parameter
, u32 para_len
,
818 struct hisi_sas_tmf_task
*tmf
)
820 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
821 struct hisi_hba
*hisi_hba
= sas_dev
->hisi_hba
;
822 struct device
*dev
= hisi_hba
->dev
;
823 struct sas_task
*task
;
826 for (retry
= 0; retry
< TASK_RETRY
; retry
++) {
827 task
= sas_alloc_slow_task(GFP_KERNEL
);
832 task
->task_proto
= device
->tproto
;
834 if (dev_is_sata(device
)) {
835 task
->ata_task
.device_control_reg_update
= 1;
836 memcpy(&task
->ata_task
.fis
, parameter
, para_len
);
838 memcpy(&task
->ssp_task
, parameter
, para_len
);
840 task
->task_done
= hisi_sas_task_done
;
842 task
->slow_task
->timer
.data
= (unsigned long) task
;
843 task
->slow_task
->timer
.function
= hisi_sas_tmf_timedout
;
844 task
->slow_task
->timer
.expires
= jiffies
+ TASK_TIMEOUT
*HZ
;
845 add_timer(&task
->slow_task
->timer
);
847 res
= hisi_sas_task_exec(task
, GFP_KERNEL
, 1, tmf
);
850 del_timer(&task
->slow_task
->timer
);
851 dev_err(dev
, "abort tmf: executing internal task failed: %d\n",
856 wait_for_completion(&task
->slow_task
->completion
);
857 res
= TMF_RESP_FUNC_FAILED
;
858 /* Even TMF timed out, return direct. */
859 if ((task
->task_state_flags
& SAS_TASK_STATE_ABORTED
)) {
860 if (!(task
->task_state_flags
& SAS_TASK_STATE_DONE
)) {
861 struct hisi_sas_slot
*slot
= task
->lldd_task
;
863 dev_err(dev
, "abort tmf: TMF task timeout\n");
871 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
872 task
->task_status
.stat
== TMF_RESP_FUNC_COMPLETE
) {
873 res
= TMF_RESP_FUNC_COMPLETE
;
877 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
878 task
->task_status
.stat
== TMF_RESP_FUNC_SUCC
) {
879 res
= TMF_RESP_FUNC_SUCC
;
883 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
884 task
->task_status
.stat
== SAS_DATA_UNDERRUN
) {
885 /* no error, but return the number of bytes of
888 dev_warn(dev
, "abort tmf: task to dev %016llx "
889 "resp: 0x%x sts 0x%x underrun\n",
890 SAS_ADDR(device
->sas_addr
),
891 task
->task_status
.resp
,
892 task
->task_status
.stat
);
893 res
= task
->task_status
.residual
;
897 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
898 task
->task_status
.stat
== SAS_DATA_OVERRUN
) {
899 dev_warn(dev
, "abort tmf: blocked task error\n");
904 dev_warn(dev
, "abort tmf: task to dev "
905 "%016llx resp: 0x%x status 0x%x\n",
906 SAS_ADDR(device
->sas_addr
), task
->task_status
.resp
,
907 task
->task_status
.stat
);
912 if (retry
== TASK_RETRY
)
913 dev_warn(dev
, "abort tmf: executing internal task failed!\n");
918 static void hisi_sas_fill_ata_reset_cmd(struct ata_device
*dev
,
919 bool reset
, int pmp
, u8
*fis
)
921 struct ata_taskfile tf
;
923 ata_tf_init(dev
, &tf
);
928 tf
.command
= ATA_CMD_DEV_RESET
;
929 ata_tf_to_fis(&tf
, pmp
, 0, fis
);
932 static int hisi_sas_softreset_ata_disk(struct domain_device
*device
)
935 struct ata_port
*ap
= device
->sata_dev
.ap
;
936 struct ata_link
*link
;
937 int rc
= TMF_RESP_FUNC_FAILED
;
938 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
939 struct device
*dev
= hisi_hba
->dev
;
940 int s
= sizeof(struct host_to_dev_fis
);
943 ata_for_each_link(link
, ap
, EDGE
) {
944 int pmp
= sata_srst_pmp(link
);
946 hisi_sas_fill_ata_reset_cmd(link
->device
, 1, pmp
, fis
);
947 rc
= hisi_sas_exec_internal_tmf_task(device
, fis
, s
, NULL
);
948 if (rc
!= TMF_RESP_FUNC_COMPLETE
)
952 if (rc
== TMF_RESP_FUNC_COMPLETE
) {
953 ata_for_each_link(link
, ap
, EDGE
) {
954 int pmp
= sata_srst_pmp(link
);
956 hisi_sas_fill_ata_reset_cmd(link
->device
, 0, pmp
, fis
);
957 rc
= hisi_sas_exec_internal_tmf_task(device
, fis
,
959 if (rc
!= TMF_RESP_FUNC_COMPLETE
)
960 dev_err(dev
, "ata disk de-reset failed\n");
963 dev_err(dev
, "ata disk reset failed\n");
966 if (rc
== TMF_RESP_FUNC_COMPLETE
) {
967 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
968 hisi_sas_release_task(hisi_hba
, device
);
969 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
975 static int hisi_sas_debug_issue_ssp_tmf(struct domain_device
*device
,
976 u8
*lun
, struct hisi_sas_tmf_task
*tmf
)
978 struct sas_ssp_task ssp_task
;
980 if (!(device
->tproto
& SAS_PROTOCOL_SSP
))
981 return TMF_RESP_FUNC_ESUPP
;
983 memcpy(ssp_task
.LUN
, lun
, 8);
985 return hisi_sas_exec_internal_tmf_task(device
, &ssp_task
,
986 sizeof(ssp_task
), tmf
);
989 static void hisi_sas_refresh_port_id(struct hisi_hba
*hisi_hba
,
990 struct asd_sas_port
*sas_port
, enum sas_linkrate linkrate
)
992 struct hisi_sas_device
*sas_dev
;
993 struct domain_device
*device
;
996 for (i
= 0; i
< HISI_SAS_MAX_DEVICES
; i
++) {
997 sas_dev
= &hisi_hba
->devices
[i
];
998 device
= sas_dev
->sas_device
;
999 if ((sas_dev
->dev_type
== SAS_PHY_UNUSED
)
1000 || !device
|| (device
->port
!= sas_port
))
1003 hisi_hba
->hw
->free_device(hisi_hba
, sas_dev
);
1005 /* Update linkrate of directly attached device. */
1006 if (!device
->parent
)
1007 device
->linkrate
= linkrate
;
1009 hisi_hba
->hw
->setup_itct(hisi_hba
, sas_dev
);
1013 static void hisi_sas_rescan_topology(struct hisi_hba
*hisi_hba
, u32 old_state
,
1016 struct sas_ha_struct
*sas_ha
= &hisi_hba
->sha
;
1017 struct asd_sas_port
*_sas_port
= NULL
;
1020 for (phy_no
= 0; phy_no
< hisi_hba
->n_phy
; phy_no
++) {
1021 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
1022 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
1023 struct asd_sas_port
*sas_port
= sas_phy
->port
;
1024 struct hisi_sas_port
*port
= to_hisi_sas_port(sas_port
);
1025 bool do_port_check
= !!(_sas_port
!= sas_port
);
1027 if (!sas_phy
->phy
->enabled
)
1030 /* Report PHY state change to libsas */
1031 if (state
& (1 << phy_no
)) {
1032 if (do_port_check
&& sas_port
) {
1033 struct domain_device
*dev
= sas_port
->port_dev
;
1035 _sas_port
= sas_port
;
1036 port
->id
= phy
->port_id
;
1037 hisi_sas_refresh_port_id(hisi_hba
,
1038 sas_port
, sas_phy
->linkrate
);
1040 if (DEV_IS_EXPANDER(dev
->dev_type
))
1041 sas_ha
->notify_port_event(sas_phy
,
1042 PORTE_BROADCAST_RCVD
);
1044 } else if (old_state
& (1 << phy_no
))
1045 /* PHY down but was up before */
1046 hisi_sas_phy_down(hisi_hba
, phy_no
, 0);
1050 drain_workqueue(hisi_hba
->shost
->work_q
);
1053 static int hisi_sas_controller_reset(struct hisi_hba
*hisi_hba
)
1055 struct device
*dev
= hisi_hba
->dev
;
1056 struct Scsi_Host
*shost
= hisi_hba
->shost
;
1057 u32 old_state
, state
;
1058 unsigned long flags
;
1061 if (!hisi_hba
->hw
->soft_reset
)
1064 if (test_and_set_bit(HISI_SAS_RESET_BIT
, &hisi_hba
->flags
))
1067 dev_dbg(dev
, "controller resetting...\n");
1068 old_state
= hisi_hba
->hw
->get_phys_state(hisi_hba
);
1070 scsi_block_requests(shost
);
1071 set_bit(HISI_SAS_REJECT_CMD_BIT
, &hisi_hba
->flags
);
1072 rc
= hisi_hba
->hw
->soft_reset(hisi_hba
);
1074 dev_warn(dev
, "controller reset failed (%d)\n", rc
);
1075 clear_bit(HISI_SAS_REJECT_CMD_BIT
, &hisi_hba
->flags
);
1078 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1079 hisi_sas_release_tasks(hisi_hba
);
1080 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1082 clear_bit(HISI_SAS_REJECT_CMD_BIT
, &hisi_hba
->flags
);
1084 /* Init and wait for PHYs to come up and all libsas event finished. */
1085 hisi_hba
->hw
->phys_init(hisi_hba
);
1087 drain_workqueue(hisi_hba
->wq
);
1088 drain_workqueue(shost
->work_q
);
1090 state
= hisi_hba
->hw
->get_phys_state(hisi_hba
);
1091 hisi_sas_rescan_topology(hisi_hba
, old_state
, state
);
1092 dev_dbg(dev
, "controller reset complete\n");
1095 scsi_unblock_requests(shost
);
1096 clear_bit(HISI_SAS_RESET_BIT
, &hisi_hba
->flags
);
1101 static int hisi_sas_abort_task(struct sas_task
*task
)
1103 struct scsi_lun lun
;
1104 struct hisi_sas_tmf_task tmf_task
;
1105 struct domain_device
*device
= task
->dev
;
1106 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
1107 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(task
->dev
);
1108 struct device
*dev
= hisi_hba
->dev
;
1109 int rc
= TMF_RESP_FUNC_FAILED
;
1110 unsigned long flags
;
1113 dev_warn(dev
, "Device has been removed\n");
1114 return TMF_RESP_FUNC_FAILED
;
1117 if (task
->task_state_flags
& SAS_TASK_STATE_DONE
) {
1118 rc
= TMF_RESP_FUNC_COMPLETE
;
1122 sas_dev
->dev_status
= HISI_SAS_DEV_EH
;
1123 if (task
->lldd_task
&& task
->task_proto
& SAS_PROTOCOL_SSP
) {
1124 struct scsi_cmnd
*cmnd
= task
->uldd_task
;
1125 struct hisi_sas_slot
*slot
= task
->lldd_task
;
1126 u32 tag
= slot
->idx
;
1129 int_to_scsilun(cmnd
->device
->lun
, &lun
);
1130 tmf_task
.tmf
= TMF_ABORT_TASK
;
1131 tmf_task
.tag_of_task_to_be_managed
= cpu_to_le16(tag
);
1133 rc
= hisi_sas_debug_issue_ssp_tmf(task
->dev
, lun
.scsi_lun
,
1136 rc2
= hisi_sas_internal_task_abort(hisi_hba
, device
,
1137 HISI_SAS_INT_ABT_CMD
, tag
);
1139 * If the TMF finds that the IO is not in the device and also
1140 * the internal abort does not succeed, then it is safe to
1142 * Note: if the internal abort succeeds then the slot
1143 * will have already been completed
1145 if (rc
== TMF_RESP_FUNC_COMPLETE
&& rc2
!= TMF_RESP_FUNC_SUCC
) {
1146 if (task
->lldd_task
) {
1147 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1148 hisi_sas_do_release_task(hisi_hba
, task
, slot
);
1149 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1152 } else if (task
->task_proto
& SAS_PROTOCOL_SATA
||
1153 task
->task_proto
& SAS_PROTOCOL_STP
) {
1154 if (task
->dev
->dev_type
== SAS_SATA_DEV
) {
1155 hisi_sas_internal_task_abort(hisi_hba
, device
,
1156 HISI_SAS_INT_ABT_DEV
, 0);
1157 hisi_sas_dereg_device(hisi_hba
, device
);
1158 rc
= hisi_sas_softreset_ata_disk(device
);
1160 } else if (task
->lldd_task
&& task
->task_proto
& SAS_PROTOCOL_SMP
) {
1162 struct hisi_sas_slot
*slot
= task
->lldd_task
;
1163 u32 tag
= slot
->idx
;
1165 rc
= hisi_sas_internal_task_abort(hisi_hba
, device
,
1166 HISI_SAS_INT_ABT_CMD
, tag
);
1167 if (rc
== TMF_RESP_FUNC_FAILED
&& task
->lldd_task
) {
1168 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1169 hisi_sas_do_release_task(hisi_hba
, task
, slot
);
1170 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1175 if (rc
!= TMF_RESP_FUNC_COMPLETE
)
1176 dev_notice(dev
, "abort task: rc=%d\n", rc
);
1180 static int hisi_sas_abort_task_set(struct domain_device
*device
, u8
*lun
)
1182 struct hisi_sas_tmf_task tmf_task
;
1183 int rc
= TMF_RESP_FUNC_FAILED
;
1185 tmf_task
.tmf
= TMF_ABORT_TASK_SET
;
1186 rc
= hisi_sas_debug_issue_ssp_tmf(device
, lun
, &tmf_task
);
1191 static int hisi_sas_clear_aca(struct domain_device
*device
, u8
*lun
)
1193 int rc
= TMF_RESP_FUNC_FAILED
;
1194 struct hisi_sas_tmf_task tmf_task
;
1196 tmf_task
.tmf
= TMF_CLEAR_ACA
;
1197 rc
= hisi_sas_debug_issue_ssp_tmf(device
, lun
, &tmf_task
);
1202 static int hisi_sas_debug_I_T_nexus_reset(struct domain_device
*device
)
1204 struct sas_phy
*phy
= sas_get_local_phy(device
);
1205 int rc
, reset_type
= (device
->dev_type
== SAS_SATA_DEV
||
1206 (device
->tproto
& SAS_PROTOCOL_STP
)) ? 0 : 1;
1207 rc
= sas_phy_reset(phy
, reset_type
);
1208 sas_put_local_phy(phy
);
1213 static int hisi_sas_I_T_nexus_reset(struct domain_device
*device
)
1215 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
1216 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
1217 unsigned long flags
;
1218 int rc
= TMF_RESP_FUNC_FAILED
;
1220 if (sas_dev
->dev_status
!= HISI_SAS_DEV_EH
)
1221 return TMF_RESP_FUNC_FAILED
;
1222 sas_dev
->dev_status
= HISI_SAS_DEV_NORMAL
;
1224 hisi_sas_internal_task_abort(hisi_hba
, device
,
1225 HISI_SAS_INT_ABT_DEV
, 0);
1226 hisi_sas_dereg_device(hisi_hba
, device
);
1228 rc
= hisi_sas_debug_I_T_nexus_reset(device
);
1230 if (rc
== TMF_RESP_FUNC_COMPLETE
) {
1231 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1232 hisi_sas_release_task(hisi_hba
, device
);
1233 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1238 static int hisi_sas_lu_reset(struct domain_device
*device
, u8
*lun
)
1240 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
1241 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
1242 struct device
*dev
= hisi_hba
->dev
;
1243 unsigned long flags
;
1244 int rc
= TMF_RESP_FUNC_FAILED
;
1246 sas_dev
->dev_status
= HISI_SAS_DEV_EH
;
1247 if (dev_is_sata(device
)) {
1248 struct sas_phy
*phy
;
1250 /* Clear internal IO and then hardreset */
1251 rc
= hisi_sas_internal_task_abort(hisi_hba
, device
,
1252 HISI_SAS_INT_ABT_DEV
, 0);
1253 if (rc
== TMF_RESP_FUNC_FAILED
)
1255 hisi_sas_dereg_device(hisi_hba
, device
);
1257 phy
= sas_get_local_phy(device
);
1259 rc
= sas_phy_reset(phy
, 1);
1262 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1263 hisi_sas_release_task(hisi_hba
, device
);
1264 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1266 sas_put_local_phy(phy
);
1268 struct hisi_sas_tmf_task tmf_task
= { .tmf
= TMF_LU_RESET
};
1270 rc
= hisi_sas_debug_issue_ssp_tmf(device
, lun
, &tmf_task
);
1271 if (rc
== TMF_RESP_FUNC_COMPLETE
) {
1272 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1273 hisi_sas_release_task(hisi_hba
, device
);
1274 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1278 if (rc
!= TMF_RESP_FUNC_COMPLETE
)
1279 dev_err(dev
, "lu_reset: for device[%d]:rc= %d\n",
1280 sas_dev
->device_id
, rc
);
1284 static int hisi_sas_clear_nexus_ha(struct sas_ha_struct
*sas_ha
)
1286 struct hisi_hba
*hisi_hba
= sas_ha
->lldd_ha
;
1288 return hisi_sas_controller_reset(hisi_hba
);
1291 static int hisi_sas_query_task(struct sas_task
*task
)
1293 struct scsi_lun lun
;
1294 struct hisi_sas_tmf_task tmf_task
;
1295 int rc
= TMF_RESP_FUNC_FAILED
;
1297 if (task
->lldd_task
&& task
->task_proto
& SAS_PROTOCOL_SSP
) {
1298 struct scsi_cmnd
*cmnd
= task
->uldd_task
;
1299 struct domain_device
*device
= task
->dev
;
1300 struct hisi_sas_slot
*slot
= task
->lldd_task
;
1301 u32 tag
= slot
->idx
;
1303 int_to_scsilun(cmnd
->device
->lun
, &lun
);
1304 tmf_task
.tmf
= TMF_QUERY_TASK
;
1305 tmf_task
.tag_of_task_to_be_managed
= cpu_to_le16(tag
);
1307 rc
= hisi_sas_debug_issue_ssp_tmf(device
,
1311 /* The task is still in Lun, release it then */
1312 case TMF_RESP_FUNC_SUCC
:
1313 /* The task is not in Lun or failed, reset the phy */
1314 case TMF_RESP_FUNC_FAILED
:
1315 case TMF_RESP_FUNC_COMPLETE
:
1318 rc
= TMF_RESP_FUNC_FAILED
;
1326 hisi_sas_internal_abort_task_exec(struct hisi_hba
*hisi_hba
, int device_id
,
1327 struct sas_task
*task
, int abort_flag
,
1330 struct domain_device
*device
= task
->dev
;
1331 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
1332 struct device
*dev
= hisi_hba
->dev
;
1333 struct hisi_sas_port
*port
;
1334 struct hisi_sas_slot
*slot
;
1335 struct asd_sas_port
*sas_port
= device
->port
;
1336 struct hisi_sas_cmd_hdr
*cmd_hdr_base
;
1337 struct hisi_sas_dq
*dq
= sas_dev
->dq
;
1338 int dlvry_queue_slot
, dlvry_queue
, n_elem
= 0, rc
, slot_idx
;
1339 unsigned long flags
, flags_dq
;
1341 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT
, &hisi_hba
->flags
)))
1347 port
= to_hisi_sas_port(sas_port
);
1349 /* simply get a slot and send abort command */
1350 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1351 rc
= hisi_sas_slot_index_alloc(hisi_hba
, &slot_idx
);
1353 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1356 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1358 spin_lock_irqsave(&dq
->lock
, flags_dq
);
1359 rc
= hisi_hba
->hw
->get_free_slot(hisi_hba
, dq
);
1363 dlvry_queue
= dq
->id
;
1364 dlvry_queue_slot
= dq
->wr_point
;
1366 slot
= &hisi_hba
->slot_info
[slot_idx
];
1367 memset(slot
, 0, sizeof(struct hisi_sas_slot
));
1369 slot
->idx
= slot_idx
;
1370 slot
->n_elem
= n_elem
;
1371 slot
->dlvry_queue
= dlvry_queue
;
1372 slot
->dlvry_queue_slot
= dlvry_queue_slot
;
1373 cmd_hdr_base
= hisi_hba
->cmd_hdr
[dlvry_queue
];
1374 slot
->cmd_hdr
= &cmd_hdr_base
[dlvry_queue_slot
];
1377 task
->lldd_task
= slot
;
1379 slot
->buf
= dma_pool_alloc(hisi_hba
->buffer_pool
,
1380 GFP_ATOMIC
, &slot
->buf_dma
);
1386 memset(slot
->cmd_hdr
, 0, sizeof(struct hisi_sas_cmd_hdr
));
1387 memset(hisi_sas_cmd_hdr_addr_mem(slot
), 0, HISI_SAS_COMMAND_TABLE_SZ
);
1388 memset(hisi_sas_status_buf_addr_mem(slot
), 0, HISI_SAS_STATUS_BUF_SZ
);
1390 rc
= hisi_sas_task_prep_abort(hisi_hba
, slot
, device_id
,
1391 abort_flag
, task_tag
);
1395 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1396 list_add_tail(&slot
->entry
, &sas_dev
->list
);
1397 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1398 spin_lock_irqsave(&task
->task_state_lock
, flags
);
1399 task
->task_state_flags
|= SAS_TASK_AT_INITIATOR
;
1400 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
1402 dq
->slot_prep
= slot
;
1404 atomic64_inc(&sas_dev
->running_req
);
1406 /* send abort command to the chip */
1407 hisi_hba
->hw
->start_delivery(dq
);
1408 spin_unlock_irqrestore(&dq
->lock
, flags_dq
);
1413 dma_pool_free(hisi_hba
->buffer_pool
, slot
->buf
,
1416 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1417 hisi_sas_slot_index_free(hisi_hba
, slot_idx
);
1418 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1419 spin_unlock_irqrestore(&dq
->lock
, flags_dq
);
1421 dev_err(dev
, "internal abort task prep: failed[%d]!\n", rc
);
1427 * hisi_sas_internal_task_abort -- execute an internal
1428 * abort command for single IO command or a device
1429 * @hisi_hba: host controller struct
1430 * @device: domain device
1431 * @abort_flag: mode of operation, device or single IO
1432 * @tag: tag of IO to be aborted (only relevant to single
1436 hisi_sas_internal_task_abort(struct hisi_hba
*hisi_hba
,
1437 struct domain_device
*device
,
1438 int abort_flag
, int tag
)
1440 struct sas_task
*task
;
1441 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
1442 struct device
*dev
= hisi_hba
->dev
;
1445 if (!hisi_hba
->hw
->prep_abort
)
1448 task
= sas_alloc_slow_task(GFP_KERNEL
);
1453 task
->task_proto
= device
->tproto
;
1454 task
->task_done
= hisi_sas_task_done
;
1455 task
->slow_task
->timer
.data
= (unsigned long)task
;
1456 task
->slow_task
->timer
.function
= hisi_sas_tmf_timedout
;
1457 task
->slow_task
->timer
.expires
= jiffies
+ msecs_to_jiffies(110);
1458 add_timer(&task
->slow_task
->timer
);
1460 res
= hisi_sas_internal_abort_task_exec(hisi_hba
, sas_dev
->device_id
,
1461 task
, abort_flag
, tag
);
1463 del_timer(&task
->slow_task
->timer
);
1464 dev_err(dev
, "internal task abort: executing internal task failed: %d\n",
1468 wait_for_completion(&task
->slow_task
->completion
);
1469 res
= TMF_RESP_FUNC_FAILED
;
1471 /* Internal abort timed out */
1472 if ((task
->task_state_flags
& SAS_TASK_STATE_ABORTED
)) {
1473 if (!(task
->task_state_flags
& SAS_TASK_STATE_DONE
)) {
1474 struct hisi_sas_slot
*slot
= task
->lldd_task
;
1478 dev_err(dev
, "internal task abort: timeout.\n");
1483 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
1484 task
->task_status
.stat
== TMF_RESP_FUNC_COMPLETE
) {
1485 res
= TMF_RESP_FUNC_COMPLETE
;
1489 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
1490 task
->task_status
.stat
== TMF_RESP_FUNC_SUCC
) {
1491 res
= TMF_RESP_FUNC_SUCC
;
1496 dev_dbg(dev
, "internal task abort: task to dev %016llx task=%p "
1497 "resp: 0x%x sts 0x%x\n",
1498 SAS_ADDR(device
->sas_addr
),
1500 task
->task_status
.resp
, /* 0 is complete, -1 is undelivered */
1501 task
->task_status
.stat
);
1502 sas_free_task(task
);
1507 static void hisi_sas_port_formed(struct asd_sas_phy
*sas_phy
)
1509 hisi_sas_port_notify_formed(sas_phy
);
1512 static void hisi_sas_phy_disconnected(struct hisi_sas_phy
*phy
)
1514 phy
->phy_attached
= 0;
1519 void hisi_sas_phy_down(struct hisi_hba
*hisi_hba
, int phy_no
, int rdy
)
1521 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
1522 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
1523 struct sas_ha_struct
*sas_ha
= &hisi_hba
->sha
;
1526 /* Phy down but ready */
1527 hisi_sas_bytes_dmaed(hisi_hba
, phy_no
);
1528 hisi_sas_port_notify_formed(sas_phy
);
1530 struct hisi_sas_port
*port
= phy
->port
;
1532 /* Phy down and not ready */
1533 sas_ha
->notify_phy_event(sas_phy
, PHYE_LOSS_OF_SIGNAL
);
1534 sas_phy_disconnected(sas_phy
);
1537 if (phy
->phy_type
& PORT_TYPE_SAS
) {
1538 int port_id
= port
->id
;
1540 if (!hisi_hba
->hw
->get_wideport_bitmap(hisi_hba
,
1542 port
->port_attached
= 0;
1543 } else if (phy
->phy_type
& PORT_TYPE_SATA
)
1544 port
->port_attached
= 0;
1546 hisi_sas_phy_disconnected(phy
);
1549 EXPORT_SYMBOL_GPL(hisi_sas_phy_down
);
1552 struct scsi_transport_template
*hisi_sas_stt
;
1553 EXPORT_SYMBOL_GPL(hisi_sas_stt
);
1555 static struct scsi_host_template _hisi_sas_sht
= {
1556 .module
= THIS_MODULE
,
1558 .queuecommand
= sas_queuecommand
,
1559 .target_alloc
= sas_target_alloc
,
1560 .slave_configure
= hisi_sas_slave_configure
,
1561 .scan_finished
= hisi_sas_scan_finished
,
1562 .scan_start
= hisi_sas_scan_start
,
1563 .change_queue_depth
= sas_change_queue_depth
,
1564 .bios_param
= sas_bios_param
,
1567 .sg_tablesize
= SG_ALL
,
1568 .max_sectors
= SCSI_DEFAULT_MAX_SECTORS
,
1569 .use_clustering
= ENABLE_CLUSTERING
,
1570 .eh_device_reset_handler
= sas_eh_device_reset_handler
,
1571 .eh_target_reset_handler
= sas_eh_target_reset_handler
,
1572 .target_destroy
= sas_target_destroy
,
1575 struct scsi_host_template
*hisi_sas_sht
= &_hisi_sas_sht
;
1576 EXPORT_SYMBOL_GPL(hisi_sas_sht
);
1578 static struct sas_domain_function_template hisi_sas_transport_ops
= {
1579 .lldd_dev_found
= hisi_sas_dev_found
,
1580 .lldd_dev_gone
= hisi_sas_dev_gone
,
1581 .lldd_execute_task
= hisi_sas_queue_command
,
1582 .lldd_control_phy
= hisi_sas_control_phy
,
1583 .lldd_abort_task
= hisi_sas_abort_task
,
1584 .lldd_abort_task_set
= hisi_sas_abort_task_set
,
1585 .lldd_clear_aca
= hisi_sas_clear_aca
,
1586 .lldd_I_T_nexus_reset
= hisi_sas_I_T_nexus_reset
,
1587 .lldd_lu_reset
= hisi_sas_lu_reset
,
1588 .lldd_query_task
= hisi_sas_query_task
,
1589 .lldd_clear_nexus_ha
= hisi_sas_clear_nexus_ha
,
1590 .lldd_port_formed
= hisi_sas_port_formed
,
1593 void hisi_sas_init_mem(struct hisi_hba
*hisi_hba
)
1595 int i
, s
, max_command_entries
= hisi_hba
->hw
->max_command_entries
;
1597 for (i
= 0; i
< hisi_hba
->queue_count
; i
++) {
1598 struct hisi_sas_cq
*cq
= &hisi_hba
->cq
[i
];
1599 struct hisi_sas_dq
*dq
= &hisi_hba
->dq
[i
];
1601 s
= sizeof(struct hisi_sas_cmd_hdr
) * HISI_SAS_QUEUE_SLOTS
;
1602 memset(hisi_hba
->cmd_hdr
[i
], 0, s
);
1605 s
= hisi_hba
->hw
->complete_hdr_size
* HISI_SAS_QUEUE_SLOTS
;
1606 memset(hisi_hba
->complete_hdr
[i
], 0, s
);
1610 s
= sizeof(struct hisi_sas_initial_fis
) * hisi_hba
->n_phy
;
1611 memset(hisi_hba
->initial_fis
, 0, s
);
1613 s
= max_command_entries
* sizeof(struct hisi_sas_iost
);
1614 memset(hisi_hba
->iost
, 0, s
);
1616 s
= max_command_entries
* sizeof(struct hisi_sas_breakpoint
);
1617 memset(hisi_hba
->breakpoint
, 0, s
);
1619 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_sata_breakpoint
);
1620 memset(hisi_hba
->sata_breakpoint
, 0, s
);
1622 EXPORT_SYMBOL_GPL(hisi_sas_init_mem
);
1624 int hisi_sas_alloc(struct hisi_hba
*hisi_hba
, struct Scsi_Host
*shost
)
1626 struct device
*dev
= hisi_hba
->dev
;
1627 int i
, s
, max_command_entries
= hisi_hba
->hw
->max_command_entries
;
1629 spin_lock_init(&hisi_hba
->lock
);
1630 for (i
= 0; i
< hisi_hba
->n_phy
; i
++) {
1631 hisi_sas_phy_init(hisi_hba
, i
);
1632 hisi_hba
->port
[i
].port_attached
= 0;
1633 hisi_hba
->port
[i
].id
= -1;
1636 for (i
= 0; i
< HISI_SAS_MAX_DEVICES
; i
++) {
1637 hisi_hba
->devices
[i
].dev_type
= SAS_PHY_UNUSED
;
1638 hisi_hba
->devices
[i
].device_id
= i
;
1639 hisi_hba
->devices
[i
].dev_status
= HISI_SAS_DEV_NORMAL
;
1642 for (i
= 0; i
< hisi_hba
->queue_count
; i
++) {
1643 struct hisi_sas_cq
*cq
= &hisi_hba
->cq
[i
];
1644 struct hisi_sas_dq
*dq
= &hisi_hba
->dq
[i
];
1646 /* Completion queue structure */
1648 cq
->hisi_hba
= hisi_hba
;
1650 /* Delivery queue structure */
1652 dq
->hisi_hba
= hisi_hba
;
1654 /* Delivery queue */
1655 s
= sizeof(struct hisi_sas_cmd_hdr
) * HISI_SAS_QUEUE_SLOTS
;
1656 hisi_hba
->cmd_hdr
[i
] = dma_alloc_coherent(dev
, s
,
1657 &hisi_hba
->cmd_hdr_dma
[i
], GFP_KERNEL
);
1658 if (!hisi_hba
->cmd_hdr
[i
])
1661 /* Completion queue */
1662 s
= hisi_hba
->hw
->complete_hdr_size
* HISI_SAS_QUEUE_SLOTS
;
1663 hisi_hba
->complete_hdr
[i
] = dma_alloc_coherent(dev
, s
,
1664 &hisi_hba
->complete_hdr_dma
[i
], GFP_KERNEL
);
1665 if (!hisi_hba
->complete_hdr
[i
])
1669 s
= sizeof(struct hisi_sas_slot_buf_table
);
1670 hisi_hba
->buffer_pool
= dma_pool_create("dma_buffer", dev
, s
, 16, 0);
1671 if (!hisi_hba
->buffer_pool
)
1674 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_itct
);
1675 hisi_hba
->itct
= dma_alloc_coherent(dev
, s
, &hisi_hba
->itct_dma
,
1677 if (!hisi_hba
->itct
)
1680 memset(hisi_hba
->itct
, 0, s
);
1682 hisi_hba
->slot_info
= devm_kcalloc(dev
, max_command_entries
,
1683 sizeof(struct hisi_sas_slot
),
1685 if (!hisi_hba
->slot_info
)
1688 s
= max_command_entries
* sizeof(struct hisi_sas_iost
);
1689 hisi_hba
->iost
= dma_alloc_coherent(dev
, s
, &hisi_hba
->iost_dma
,
1691 if (!hisi_hba
->iost
)
1694 s
= max_command_entries
* sizeof(struct hisi_sas_breakpoint
);
1695 hisi_hba
->breakpoint
= dma_alloc_coherent(dev
, s
,
1696 &hisi_hba
->breakpoint_dma
, GFP_KERNEL
);
1697 if (!hisi_hba
->breakpoint
)
1700 hisi_hba
->slot_index_count
= max_command_entries
;
1701 s
= hisi_hba
->slot_index_count
/ BITS_PER_BYTE
;
1702 hisi_hba
->slot_index_tags
= devm_kzalloc(dev
, s
, GFP_KERNEL
);
1703 if (!hisi_hba
->slot_index_tags
)
1706 s
= sizeof(struct hisi_sas_initial_fis
) * HISI_SAS_MAX_PHYS
;
1707 hisi_hba
->initial_fis
= dma_alloc_coherent(dev
, s
,
1708 &hisi_hba
->initial_fis_dma
, GFP_KERNEL
);
1709 if (!hisi_hba
->initial_fis
)
1712 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_sata_breakpoint
);
1713 hisi_hba
->sata_breakpoint
= dma_alloc_coherent(dev
, s
,
1714 &hisi_hba
->sata_breakpoint_dma
, GFP_KERNEL
);
1715 if (!hisi_hba
->sata_breakpoint
)
1717 hisi_sas_init_mem(hisi_hba
);
1719 hisi_sas_slot_index_init(hisi_hba
);
1721 hisi_hba
->wq
= create_singlethread_workqueue(dev_name(dev
));
1722 if (!hisi_hba
->wq
) {
1723 dev_err(dev
, "sas_alloc: failed to create workqueue\n");
1731 EXPORT_SYMBOL_GPL(hisi_sas_alloc
);
1733 void hisi_sas_free(struct hisi_hba
*hisi_hba
)
1735 struct device
*dev
= hisi_hba
->dev
;
1736 int i
, s
, max_command_entries
= hisi_hba
->hw
->max_command_entries
;
1738 for (i
= 0; i
< hisi_hba
->queue_count
; i
++) {
1739 s
= sizeof(struct hisi_sas_cmd_hdr
) * HISI_SAS_QUEUE_SLOTS
;
1740 if (hisi_hba
->cmd_hdr
[i
])
1741 dma_free_coherent(dev
, s
,
1742 hisi_hba
->cmd_hdr
[i
],
1743 hisi_hba
->cmd_hdr_dma
[i
]);
1745 s
= hisi_hba
->hw
->complete_hdr_size
* HISI_SAS_QUEUE_SLOTS
;
1746 if (hisi_hba
->complete_hdr
[i
])
1747 dma_free_coherent(dev
, s
,
1748 hisi_hba
->complete_hdr
[i
],
1749 hisi_hba
->complete_hdr_dma
[i
]);
1752 dma_pool_destroy(hisi_hba
->buffer_pool
);
1754 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_itct
);
1756 dma_free_coherent(dev
, s
,
1757 hisi_hba
->itct
, hisi_hba
->itct_dma
);
1759 s
= max_command_entries
* sizeof(struct hisi_sas_iost
);
1761 dma_free_coherent(dev
, s
,
1762 hisi_hba
->iost
, hisi_hba
->iost_dma
);
1764 s
= max_command_entries
* sizeof(struct hisi_sas_breakpoint
);
1765 if (hisi_hba
->breakpoint
)
1766 dma_free_coherent(dev
, s
,
1767 hisi_hba
->breakpoint
,
1768 hisi_hba
->breakpoint_dma
);
1771 s
= sizeof(struct hisi_sas_initial_fis
) * HISI_SAS_MAX_PHYS
;
1772 if (hisi_hba
->initial_fis
)
1773 dma_free_coherent(dev
, s
,
1774 hisi_hba
->initial_fis
,
1775 hisi_hba
->initial_fis_dma
);
1777 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_sata_breakpoint
);
1778 if (hisi_hba
->sata_breakpoint
)
1779 dma_free_coherent(dev
, s
,
1780 hisi_hba
->sata_breakpoint
,
1781 hisi_hba
->sata_breakpoint_dma
);
1784 destroy_workqueue(hisi_hba
->wq
);
1786 EXPORT_SYMBOL_GPL(hisi_sas_free
);
1788 static void hisi_sas_rst_work_handler(struct work_struct
*work
)
1790 struct hisi_hba
*hisi_hba
=
1791 container_of(work
, struct hisi_hba
, rst_work
);
1793 hisi_sas_controller_reset(hisi_hba
);
1796 int hisi_sas_get_fw_info(struct hisi_hba
*hisi_hba
)
1798 struct device
*dev
= hisi_hba
->dev
;
1799 struct platform_device
*pdev
= hisi_hba
->platform_dev
;
1800 struct device_node
*np
= pdev
? pdev
->dev
.of_node
: NULL
;
1803 if (device_property_read_u8_array(dev
, "sas-addr", hisi_hba
->sas_addr
,
1805 dev_err(dev
, "could not get property sas-addr\n");
1811 * These properties are only required for platform device-based
1812 * controller with DT firmware.
1814 hisi_hba
->ctrl
= syscon_regmap_lookup_by_phandle(np
,
1815 "hisilicon,sas-syscon");
1816 if (IS_ERR(hisi_hba
->ctrl
)) {
1817 dev_err(dev
, "could not get syscon\n");
1821 if (device_property_read_u32(dev
, "ctrl-reset-reg",
1822 &hisi_hba
->ctrl_reset_reg
)) {
1824 "could not get property ctrl-reset-reg\n");
1828 if (device_property_read_u32(dev
, "ctrl-reset-sts-reg",
1829 &hisi_hba
->ctrl_reset_sts_reg
)) {
1831 "could not get property ctrl-reset-sts-reg\n");
1835 if (device_property_read_u32(dev
, "ctrl-clock-ena-reg",
1836 &hisi_hba
->ctrl_clock_ena_reg
)) {
1838 "could not get property ctrl-clock-ena-reg\n");
1843 refclk
= devm_clk_get(dev
, NULL
);
1845 dev_dbg(dev
, "no ref clk property\n");
1847 hisi_hba
->refclk_frequency_mhz
= clk_get_rate(refclk
) / 1000000;
1849 if (device_property_read_u32(dev
, "phy-count", &hisi_hba
->n_phy
)) {
1850 dev_err(dev
, "could not get property phy-count\n");
1854 if (device_property_read_u32(dev
, "queue-count",
1855 &hisi_hba
->queue_count
)) {
1856 dev_err(dev
, "could not get property queue-count\n");
1862 EXPORT_SYMBOL_GPL(hisi_sas_get_fw_info
);
1864 static struct Scsi_Host
*hisi_sas_shost_alloc(struct platform_device
*pdev
,
1865 const struct hisi_sas_hw
*hw
)
1867 struct resource
*res
;
1868 struct Scsi_Host
*shost
;
1869 struct hisi_hba
*hisi_hba
;
1870 struct device
*dev
= &pdev
->dev
;
1872 shost
= scsi_host_alloc(hisi_sas_sht
, sizeof(*hisi_hba
));
1874 dev_err(dev
, "scsi host alloc failed\n");
1877 hisi_hba
= shost_priv(shost
);
1879 INIT_WORK(&hisi_hba
->rst_work
, hisi_sas_rst_work_handler
);
1881 hisi_hba
->dev
= dev
;
1882 hisi_hba
->platform_dev
= pdev
;
1883 hisi_hba
->shost
= shost
;
1884 SHOST_TO_SAS_HA(shost
) = &hisi_hba
->sha
;
1886 init_timer(&hisi_hba
->timer
);
1888 if (hisi_sas_get_fw_info(hisi_hba
) < 0)
1891 if (dma_set_mask_and_coherent(dev
, DMA_BIT_MASK(64)) &&
1892 dma_set_mask_and_coherent(dev
, DMA_BIT_MASK(32))) {
1893 dev_err(dev
, "No usable DMA addressing method\n");
1897 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
1898 hisi_hba
->regs
= devm_ioremap_resource(dev
, res
);
1899 if (IS_ERR(hisi_hba
->regs
))
1902 if (hisi_sas_alloc(hisi_hba
, shost
)) {
1903 hisi_sas_free(hisi_hba
);
1909 scsi_host_put(shost
);
1910 dev_err(dev
, "shost alloc failed\n");
1914 void hisi_sas_init_add(struct hisi_hba
*hisi_hba
)
1918 for (i
= 0; i
< hisi_hba
->n_phy
; i
++)
1919 memcpy(&hisi_hba
->phy
[i
].dev_sas_addr
,
1923 EXPORT_SYMBOL_GPL(hisi_sas_init_add
);
1925 int hisi_sas_probe(struct platform_device
*pdev
,
1926 const struct hisi_sas_hw
*hw
)
1928 struct Scsi_Host
*shost
;
1929 struct hisi_hba
*hisi_hba
;
1930 struct device
*dev
= &pdev
->dev
;
1931 struct asd_sas_phy
**arr_phy
;
1932 struct asd_sas_port
**arr_port
;
1933 struct sas_ha_struct
*sha
;
1934 int rc
, phy_nr
, port_nr
, i
;
1936 shost
= hisi_sas_shost_alloc(pdev
, hw
);
1940 sha
= SHOST_TO_SAS_HA(shost
);
1941 hisi_hba
= shost_priv(shost
);
1942 platform_set_drvdata(pdev
, sha
);
1944 phy_nr
= port_nr
= hisi_hba
->n_phy
;
1946 arr_phy
= devm_kcalloc(dev
, phy_nr
, sizeof(void *), GFP_KERNEL
);
1947 arr_port
= devm_kcalloc(dev
, port_nr
, sizeof(void *), GFP_KERNEL
);
1948 if (!arr_phy
|| !arr_port
) {
1953 sha
->sas_phy
= arr_phy
;
1954 sha
->sas_port
= arr_port
;
1955 sha
->lldd_ha
= hisi_hba
;
1957 shost
->transportt
= hisi_sas_stt
;
1958 shost
->max_id
= HISI_SAS_MAX_DEVICES
;
1959 shost
->max_lun
= ~0;
1960 shost
->max_channel
= 1;
1961 shost
->max_cmd_len
= 16;
1962 shost
->sg_tablesize
= min_t(u16
, SG_ALL
, HISI_SAS_SGE_PAGE_CNT
);
1963 shost
->can_queue
= hisi_hba
->hw
->max_command_entries
;
1964 shost
->cmd_per_lun
= hisi_hba
->hw
->max_command_entries
;
1966 sha
->sas_ha_name
= DRV_NAME
;
1967 sha
->dev
= hisi_hba
->dev
;
1968 sha
->lldd_module
= THIS_MODULE
;
1969 sha
->sas_addr
= &hisi_hba
->sas_addr
[0];
1970 sha
->num_phys
= hisi_hba
->n_phy
;
1971 sha
->core
.shost
= hisi_hba
->shost
;
1973 for (i
= 0; i
< hisi_hba
->n_phy
; i
++) {
1974 sha
->sas_phy
[i
] = &hisi_hba
->phy
[i
].sas_phy
;
1975 sha
->sas_port
[i
] = &hisi_hba
->port
[i
].sas_port
;
1978 hisi_sas_init_add(hisi_hba
);
1980 rc
= scsi_add_host(shost
, &pdev
->dev
);
1984 rc
= sas_register_ha(sha
);
1986 goto err_out_register_ha
;
1988 rc
= hisi_hba
->hw
->hw_init(hisi_hba
);
1990 goto err_out_register_ha
;
1992 scsi_scan_host(shost
);
1996 err_out_register_ha
:
1997 scsi_remove_host(shost
);
1999 hisi_sas_free(hisi_hba
);
2000 scsi_host_put(shost
);
2003 EXPORT_SYMBOL_GPL(hisi_sas_probe
);
2005 int hisi_sas_remove(struct platform_device
*pdev
)
2007 struct sas_ha_struct
*sha
= platform_get_drvdata(pdev
);
2008 struct hisi_hba
*hisi_hba
= sha
->lldd_ha
;
2009 struct Scsi_Host
*shost
= sha
->core
.shost
;
2011 sas_unregister_ha(sha
);
2012 sas_remove_host(sha
->core
.shost
);
2014 hisi_sas_free(hisi_hba
);
2015 scsi_host_put(shost
);
2018 EXPORT_SYMBOL_GPL(hisi_sas_remove
);
2020 static __init
int hisi_sas_init(void)
2022 hisi_sas_stt
= sas_domain_attach_transport(&hisi_sas_transport_ops
);
2029 static __exit
void hisi_sas_exit(void)
2031 sas_release_transport(hisi_sas_stt
);
2034 module_init(hisi_sas_init
);
2035 module_exit(hisi_sas_exit
);
2037 MODULE_LICENSE("GPL");
2038 MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
2039 MODULE_DESCRIPTION("HISILICON SAS controller driver");
2040 MODULE_ALIAS("platform:" DRV_NAME
);