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
,
200 atomic64_dec(&sas_dev
->running_req
);
204 dma_pool_free(hisi_hba
->buffer_pool
, slot
->buf
, slot
->buf_dma
);
206 list_del_init(&slot
->entry
);
210 hisi_sas_slot_index_free(hisi_hba
, slot
->idx
);
212 /* slot memory is fully zeroed when it is reused */
214 EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free
);
216 static int hisi_sas_task_prep_smp(struct hisi_hba
*hisi_hba
,
217 struct hisi_sas_slot
*slot
)
219 return hisi_hba
->hw
->prep_smp(hisi_hba
, slot
);
222 static int hisi_sas_task_prep_ssp(struct hisi_hba
*hisi_hba
,
223 struct hisi_sas_slot
*slot
, int is_tmf
,
224 struct hisi_sas_tmf_task
*tmf
)
226 return hisi_hba
->hw
->prep_ssp(hisi_hba
, slot
, is_tmf
, tmf
);
229 static int hisi_sas_task_prep_ata(struct hisi_hba
*hisi_hba
,
230 struct hisi_sas_slot
*slot
)
232 return hisi_hba
->hw
->prep_stp(hisi_hba
, slot
);
235 static int hisi_sas_task_prep_abort(struct hisi_hba
*hisi_hba
,
236 struct hisi_sas_slot
*slot
,
237 int device_id
, int abort_flag
, int tag_to_abort
)
239 return hisi_hba
->hw
->prep_abort(hisi_hba
, slot
,
240 device_id
, abort_flag
, tag_to_abort
);
244 * This function will issue an abort TMF regardless of whether the
245 * task is in the sdev or not. Then it will do the task complete
246 * cleanup and callbacks.
248 static void hisi_sas_slot_abort(struct work_struct
*work
)
250 struct hisi_sas_slot
*abort_slot
=
251 container_of(work
, struct hisi_sas_slot
, abort_slot
);
252 struct sas_task
*task
= abort_slot
->task
;
253 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(task
->dev
);
254 struct scsi_cmnd
*cmnd
= task
->uldd_task
;
255 struct hisi_sas_tmf_task tmf_task
;
257 struct device
*dev
= hisi_hba
->dev
;
258 int tag
= abort_slot
->idx
;
261 if (!(task
->task_proto
& SAS_PROTOCOL_SSP
)) {
262 dev_err(dev
, "cannot abort slot for non-ssp task\n");
266 int_to_scsilun(cmnd
->device
->lun
, &lun
);
267 tmf_task
.tmf
= TMF_ABORT_TASK
;
268 tmf_task
.tag_of_task_to_be_managed
= cpu_to_le16(tag
);
270 hisi_sas_debug_issue_ssp_tmf(task
->dev
, lun
.scsi_lun
, &tmf_task
);
272 /* Do cleanup for this task */
273 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
274 hisi_sas_slot_task_free(hisi_hba
, task
, abort_slot
);
275 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
277 task
->task_done(task
);
280 static int hisi_sas_task_prep(struct sas_task
*task
, struct hisi_sas_dq
281 *dq
, int is_tmf
, struct hisi_sas_tmf_task
*tmf
,
284 struct hisi_hba
*hisi_hba
= dq
->hisi_hba
;
285 struct domain_device
*device
= task
->dev
;
286 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
287 struct hisi_sas_port
*port
;
288 struct hisi_sas_slot
*slot
;
289 struct hisi_sas_cmd_hdr
*cmd_hdr_base
;
290 struct asd_sas_port
*sas_port
= device
->port
;
291 struct device
*dev
= hisi_hba
->dev
;
292 int dlvry_queue_slot
, dlvry_queue
, n_elem
= 0, rc
, slot_idx
;
296 struct task_status_struct
*ts
= &task
->task_status
;
298 ts
->resp
= SAS_TASK_UNDELIVERED
;
299 ts
->stat
= SAS_PHY_DOWN
;
301 * libsas will use dev->port, should
302 * not call task_done for sata
304 if (device
->dev_type
!= SAS_SATA_DEV
)
305 task
->task_done(task
);
309 if (DEV_IS_GONE(sas_dev
)) {
311 dev_info(dev
, "task prep: device %d not ready\n",
314 dev_info(dev
, "task prep: device %016llx not ready\n",
315 SAS_ADDR(device
->sas_addr
));
320 port
= to_hisi_sas_port(sas_port
);
321 if (port
&& !port
->port_attached
) {
322 dev_info(dev
, "task prep: %s port%d not attach device\n",
323 (dev_is_sata(device
)) ?
330 if (!sas_protocol_ata(task
->task_proto
)) {
331 if (task
->num_scatter
) {
332 n_elem
= dma_map_sg(dev
, task
->scatter
,
333 task
->num_scatter
, task
->data_dir
);
340 n_elem
= task
->num_scatter
;
342 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
343 if (hisi_hba
->hw
->slot_index_alloc
)
344 rc
= hisi_hba
->hw
->slot_index_alloc(hisi_hba
, &slot_idx
,
347 rc
= hisi_sas_slot_index_alloc(hisi_hba
, &slot_idx
);
349 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
352 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
354 rc
= hisi_hba
->hw
->get_free_slot(hisi_hba
, dq
);
358 dlvry_queue
= dq
->id
;
359 dlvry_queue_slot
= dq
->wr_point
;
360 slot
= &hisi_hba
->slot_info
[slot_idx
];
361 memset(slot
, 0, sizeof(struct hisi_sas_slot
));
363 slot
->idx
= slot_idx
;
364 slot
->n_elem
= n_elem
;
365 slot
->dlvry_queue
= dlvry_queue
;
366 slot
->dlvry_queue_slot
= dlvry_queue_slot
;
367 cmd_hdr_base
= hisi_hba
->cmd_hdr
[dlvry_queue
];
368 slot
->cmd_hdr
= &cmd_hdr_base
[dlvry_queue_slot
];
371 task
->lldd_task
= slot
;
372 INIT_WORK(&slot
->abort_slot
, hisi_sas_slot_abort
);
374 slot
->buf
= dma_pool_alloc(hisi_hba
->buffer_pool
,
375 GFP_ATOMIC
, &slot
->buf_dma
);
378 goto err_out_slot_buf
;
380 memset(slot
->cmd_hdr
, 0, sizeof(struct hisi_sas_cmd_hdr
));
381 memset(hisi_sas_cmd_hdr_addr_mem(slot
), 0, HISI_SAS_COMMAND_TABLE_SZ
);
382 memset(hisi_sas_status_buf_addr_mem(slot
), 0, HISI_SAS_STATUS_BUF_SZ
);
384 switch (task
->task_proto
) {
385 case SAS_PROTOCOL_SMP
:
386 rc
= hisi_sas_task_prep_smp(hisi_hba
, slot
);
388 case SAS_PROTOCOL_SSP
:
389 rc
= hisi_sas_task_prep_ssp(hisi_hba
, slot
, is_tmf
, tmf
);
391 case SAS_PROTOCOL_SATA
:
392 case SAS_PROTOCOL_STP
:
393 case SAS_PROTOCOL_SATA
| SAS_PROTOCOL_STP
:
394 rc
= hisi_sas_task_prep_ata(hisi_hba
, slot
);
397 dev_err(dev
, "task prep: unknown/unsupported proto (0x%x)\n",
404 dev_err(dev
, "task prep: rc = 0x%x\n", rc
);
408 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
409 list_add_tail(&slot
->entry
, &sas_dev
->list
);
410 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
411 spin_lock_irqsave(&task
->task_state_lock
, flags
);
412 task
->task_state_flags
|= SAS_TASK_AT_INITIATOR
;
413 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
415 dq
->slot_prep
= slot
;
417 atomic64_inc(&sas_dev
->running_req
);
423 dma_pool_free(hisi_hba
->buffer_pool
, slot
->buf
,
426 /* Nothing to be done */
428 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
429 hisi_sas_slot_index_free(hisi_hba
, slot_idx
);
430 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
432 dev_err(dev
, "task prep: failed[%d]!\n", rc
);
433 if (!sas_protocol_ata(task
->task_proto
))
435 dma_unmap_sg(dev
, task
->scatter
,
442 static int hisi_sas_task_exec(struct sas_task
*task
, gfp_t gfp_flags
,
443 int is_tmf
, struct hisi_sas_tmf_task
*tmf
)
448 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(task
->dev
);
449 struct device
*dev
= hisi_hba
->dev
;
450 struct domain_device
*device
= task
->dev
;
451 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
452 struct hisi_sas_dq
*dq
= sas_dev
->dq
;
454 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT
, &hisi_hba
->flags
)))
457 /* protect task_prep and start_delivery sequence */
458 spin_lock_irqsave(&dq
->lock
, flags
);
459 rc
= hisi_sas_task_prep(task
, dq
, is_tmf
, tmf
, &pass
);
461 dev_err(dev
, "task exec: failed[%d]!\n", rc
);
464 hisi_hba
->hw
->start_delivery(dq
);
465 spin_unlock_irqrestore(&dq
->lock
, flags
);
470 static void hisi_sas_bytes_dmaed(struct hisi_hba
*hisi_hba
, int phy_no
)
472 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
473 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
474 struct sas_ha_struct
*sas_ha
;
476 if (!phy
->phy_attached
)
479 sas_ha
= &hisi_hba
->sha
;
480 sas_ha
->notify_phy_event(sas_phy
, PHYE_OOB_DONE
);
483 struct sas_phy
*sphy
= sas_phy
->phy
;
485 sphy
->negotiated_linkrate
= sas_phy
->linkrate
;
486 sphy
->minimum_linkrate_hw
= SAS_LINK_RATE_1_5_GBPS
;
487 sphy
->maximum_linkrate_hw
=
488 hisi_hba
->hw
->phy_get_max_linkrate();
489 if (sphy
->minimum_linkrate
== SAS_LINK_RATE_UNKNOWN
)
490 sphy
->minimum_linkrate
= phy
->minimum_linkrate
;
492 if (sphy
->maximum_linkrate
== SAS_LINK_RATE_UNKNOWN
)
493 sphy
->maximum_linkrate
= phy
->maximum_linkrate
;
496 if (phy
->phy_type
& PORT_TYPE_SAS
) {
497 struct sas_identify_frame
*id
;
499 id
= (struct sas_identify_frame
*)phy
->frame_rcvd
;
500 id
->dev_type
= phy
->identify
.device_type
;
501 id
->initiator_bits
= SAS_PROTOCOL_ALL
;
502 id
->target_bits
= phy
->identify
.target_port_protocols
;
503 } else if (phy
->phy_type
& PORT_TYPE_SATA
) {
507 sas_phy
->frame_rcvd_size
= phy
->frame_rcvd_size
;
508 sas_ha
->notify_port_event(sas_phy
, PORTE_BYTES_DMAED
);
511 static struct hisi_sas_device
*hisi_sas_alloc_dev(struct domain_device
*device
)
513 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
514 struct hisi_sas_device
*sas_dev
= NULL
;
518 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
519 for (i
= 0; i
< HISI_SAS_MAX_DEVICES
; i
++) {
520 if (hisi_hba
->devices
[i
].dev_type
== SAS_PHY_UNUSED
) {
521 int queue
= i
% hisi_hba
->queue_count
;
522 struct hisi_sas_dq
*dq
= &hisi_hba
->dq
[queue
];
524 hisi_hba
->devices
[i
].device_id
= i
;
525 sas_dev
= &hisi_hba
->devices
[i
];
526 sas_dev
->dev_status
= HISI_SAS_DEV_NORMAL
;
527 sas_dev
->dev_type
= device
->dev_type
;
528 sas_dev
->hisi_hba
= hisi_hba
;
529 sas_dev
->sas_device
= device
;
531 INIT_LIST_HEAD(&hisi_hba
->devices
[i
].list
);
535 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
540 static int hisi_sas_dev_found(struct domain_device
*device
)
542 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
543 struct domain_device
*parent_dev
= device
->parent
;
544 struct hisi_sas_device
*sas_dev
;
545 struct device
*dev
= hisi_hba
->dev
;
547 if (hisi_hba
->hw
->alloc_dev
)
548 sas_dev
= hisi_hba
->hw
->alloc_dev(device
);
550 sas_dev
= hisi_sas_alloc_dev(device
);
552 dev_err(dev
, "fail alloc dev: max support %d devices\n",
553 HISI_SAS_MAX_DEVICES
);
557 device
->lldd_dev
= sas_dev
;
558 hisi_hba
->hw
->setup_itct(hisi_hba
, sas_dev
);
560 if (parent_dev
&& DEV_IS_EXPANDER(parent_dev
->dev_type
)) {
562 u8 phy_num
= parent_dev
->ex_dev
.num_phys
;
565 for (phy_no
= 0; phy_no
< phy_num
; phy_no
++) {
566 phy
= &parent_dev
->ex_dev
.ex_phy
[phy_no
];
567 if (SAS_ADDR(phy
->attached_sas_addr
) ==
568 SAS_ADDR(device
->sas_addr
)) {
569 sas_dev
->attached_phy
= phy_no
;
574 if (phy_no
== phy_num
) {
575 dev_info(dev
, "dev found: no attached "
576 "dev:%016llx at ex:%016llx\n",
577 SAS_ADDR(device
->sas_addr
),
578 SAS_ADDR(parent_dev
->sas_addr
));
586 static int hisi_sas_slave_configure(struct scsi_device
*sdev
)
588 struct domain_device
*dev
= sdev_to_domain_dev(sdev
);
589 int ret
= sas_slave_configure(sdev
);
593 if (!dev_is_sata(dev
))
594 sas_change_queue_depth(sdev
, 64);
599 static void hisi_sas_scan_start(struct Scsi_Host
*shost
)
601 struct hisi_hba
*hisi_hba
= shost_priv(shost
);
603 hisi_hba
->hw
->phys_init(hisi_hba
);
606 static int hisi_sas_scan_finished(struct Scsi_Host
*shost
, unsigned long time
)
608 struct hisi_hba
*hisi_hba
= shost_priv(shost
);
609 struct sas_ha_struct
*sha
= &hisi_hba
->sha
;
611 /* Wait for PHY up interrupt to occur */
619 static void hisi_sas_phyup_work(struct work_struct
*work
)
621 struct hisi_sas_phy
*phy
=
622 container_of(work
, struct hisi_sas_phy
, phyup_ws
);
623 struct hisi_hba
*hisi_hba
= phy
->hisi_hba
;
624 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
625 int phy_no
= sas_phy
->id
;
627 hisi_hba
->hw
->sl_notify(hisi_hba
, phy_no
); /* This requires a sleep */
628 hisi_sas_bytes_dmaed(hisi_hba
, phy_no
);
631 static void hisi_sas_phy_init(struct hisi_hba
*hisi_hba
, int phy_no
)
633 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
634 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
636 phy
->hisi_hba
= hisi_hba
;
638 sas_phy
->enabled
= (phy_no
< hisi_hba
->n_phy
) ? 1 : 0;
639 sas_phy
->class = SAS
;
640 sas_phy
->iproto
= SAS_PROTOCOL_ALL
;
642 sas_phy
->type
= PHY_TYPE_PHYSICAL
;
643 sas_phy
->role
= PHY_ROLE_INITIATOR
;
644 sas_phy
->oob_mode
= OOB_NOT_CONNECTED
;
645 sas_phy
->linkrate
= SAS_LINK_RATE_UNKNOWN
;
646 sas_phy
->id
= phy_no
;
647 sas_phy
->sas_addr
= &hisi_hba
->sas_addr
[0];
648 sas_phy
->frame_rcvd
= &phy
->frame_rcvd
[0];
649 sas_phy
->ha
= (struct sas_ha_struct
*)hisi_hba
->shost
->hostdata
;
650 sas_phy
->lldd_phy
= phy
;
652 INIT_WORK(&phy
->phyup_ws
, hisi_sas_phyup_work
);
655 static void hisi_sas_port_notify_formed(struct asd_sas_phy
*sas_phy
)
657 struct sas_ha_struct
*sas_ha
= sas_phy
->ha
;
658 struct hisi_hba
*hisi_hba
= sas_ha
->lldd_ha
;
659 struct hisi_sas_phy
*phy
= sas_phy
->lldd_phy
;
660 struct asd_sas_port
*sas_port
= sas_phy
->port
;
661 struct hisi_sas_port
*port
= to_hisi_sas_port(sas_port
);
667 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
668 port
->port_attached
= 1;
669 port
->id
= phy
->port_id
;
671 sas_port
->lldd_port
= port
;
672 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
675 static void hisi_sas_do_release_task(struct hisi_hba
*hisi_hba
, struct sas_task
*task
,
676 struct hisi_sas_slot
*slot
)
680 struct task_status_struct
*ts
;
682 ts
= &task
->task_status
;
684 ts
->resp
= SAS_TASK_COMPLETE
;
685 ts
->stat
= SAS_ABORTED_TASK
;
686 spin_lock_irqsave(&task
->task_state_lock
, flags
);
687 task
->task_state_flags
&=
688 ~(SAS_TASK_STATE_PENDING
| SAS_TASK_AT_INITIATOR
);
689 task
->task_state_flags
|= SAS_TASK_STATE_DONE
;
690 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
693 hisi_sas_slot_task_free(hisi_hba
, task
, slot
);
696 /* hisi_hba.lock should be locked */
697 static void hisi_sas_release_task(struct hisi_hba
*hisi_hba
,
698 struct domain_device
*device
)
700 struct hisi_sas_slot
*slot
, *slot2
;
701 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
703 list_for_each_entry_safe(slot
, slot2
, &sas_dev
->list
, entry
)
704 hisi_sas_do_release_task(hisi_hba
, slot
->task
, slot
);
707 static void hisi_sas_release_tasks(struct hisi_hba
*hisi_hba
)
709 struct hisi_sas_device
*sas_dev
;
710 struct domain_device
*device
;
713 for (i
= 0; i
< HISI_SAS_MAX_DEVICES
; i
++) {
714 sas_dev
= &hisi_hba
->devices
[i
];
715 device
= sas_dev
->sas_device
;
717 if ((sas_dev
->dev_type
== SAS_PHY_UNUSED
) ||
721 hisi_sas_release_task(hisi_hba
, device
);
725 static void hisi_sas_dereg_device(struct hisi_hba
*hisi_hba
,
726 struct domain_device
*device
)
728 if (hisi_hba
->hw
->dereg_device
)
729 hisi_hba
->hw
->dereg_device(hisi_hba
, device
);
732 static void hisi_sas_dev_gone(struct domain_device
*device
)
734 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
735 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
736 struct device
*dev
= hisi_hba
->dev
;
738 dev_info(dev
, "found dev[%d:%x] is gone\n",
739 sas_dev
->device_id
, sas_dev
->dev_type
);
741 hisi_sas_internal_task_abort(hisi_hba
, device
,
742 HISI_SAS_INT_ABT_DEV
, 0);
744 hisi_sas_dereg_device(hisi_hba
, device
);
746 hisi_hba
->hw
->clear_itct(hisi_hba
, sas_dev
);
747 if (hisi_hba
->hw
->free_device
)
748 hisi_hba
->hw
->free_device(sas_dev
);
750 device
->lldd_dev
= NULL
;
751 memset(sas_dev
, 0, sizeof(*sas_dev
));
752 sas_dev
->dev_type
= SAS_PHY_UNUSED
;
755 static int hisi_sas_queue_command(struct sas_task
*task
, gfp_t gfp_flags
)
757 return hisi_sas_task_exec(task
, gfp_flags
, 0, NULL
);
760 static int hisi_sas_control_phy(struct asd_sas_phy
*sas_phy
, enum phy_func func
,
763 struct sas_ha_struct
*sas_ha
= sas_phy
->ha
;
764 struct hisi_hba
*hisi_hba
= sas_ha
->lldd_ha
;
765 int phy_no
= sas_phy
->id
;
768 case PHY_FUNC_HARD_RESET
:
769 hisi_hba
->hw
->phy_hard_reset(hisi_hba
, phy_no
);
772 case PHY_FUNC_LINK_RESET
:
773 hisi_hba
->hw
->phy_disable(hisi_hba
, phy_no
);
775 hisi_hba
->hw
->phy_start(hisi_hba
, phy_no
);
778 case PHY_FUNC_DISABLE
:
779 hisi_hba
->hw
->phy_disable(hisi_hba
, phy_no
);
782 case PHY_FUNC_SET_LINK_RATE
:
783 hisi_hba
->hw
->phy_set_linkrate(hisi_hba
, phy_no
, funcdata
);
785 case PHY_FUNC_GET_EVENTS
:
786 if (hisi_hba
->hw
->get_events
) {
787 hisi_hba
->hw
->get_events(hisi_hba
, phy_no
);
791 case PHY_FUNC_RELEASE_SPINUP_HOLD
:
798 static void hisi_sas_task_done(struct sas_task
*task
)
800 if (!del_timer(&task
->slow_task
->timer
))
802 complete(&task
->slow_task
->completion
);
805 static void hisi_sas_tmf_timedout(struct timer_list
*t
)
807 struct sas_task_slow
*slow
= from_timer(slow
, t
, timer
);
808 struct sas_task
*task
= slow
->task
;
811 spin_lock_irqsave(&task
->task_state_lock
, flags
);
812 if (!(task
->task_state_flags
& SAS_TASK_STATE_DONE
))
813 task
->task_state_flags
|= SAS_TASK_STATE_ABORTED
;
814 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
816 complete(&task
->slow_task
->completion
);
819 #define TASK_TIMEOUT 20
821 static int hisi_sas_exec_internal_tmf_task(struct domain_device
*device
,
822 void *parameter
, u32 para_len
,
823 struct hisi_sas_tmf_task
*tmf
)
825 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
826 struct hisi_hba
*hisi_hba
= sas_dev
->hisi_hba
;
827 struct device
*dev
= hisi_hba
->dev
;
828 struct sas_task
*task
;
831 for (retry
= 0; retry
< TASK_RETRY
; retry
++) {
832 task
= sas_alloc_slow_task(GFP_KERNEL
);
837 task
->task_proto
= device
->tproto
;
839 if (dev_is_sata(device
)) {
840 task
->ata_task
.device_control_reg_update
= 1;
841 memcpy(&task
->ata_task
.fis
, parameter
, para_len
);
843 memcpy(&task
->ssp_task
, parameter
, para_len
);
845 task
->task_done
= hisi_sas_task_done
;
847 task
->slow_task
->timer
.function
= hisi_sas_tmf_timedout
;
848 task
->slow_task
->timer
.expires
= jiffies
+ TASK_TIMEOUT
*HZ
;
849 add_timer(&task
->slow_task
->timer
);
851 res
= hisi_sas_task_exec(task
, GFP_KERNEL
, 1, tmf
);
854 del_timer(&task
->slow_task
->timer
);
855 dev_err(dev
, "abort tmf: executing internal task failed: %d\n",
860 wait_for_completion(&task
->slow_task
->completion
);
861 res
= TMF_RESP_FUNC_FAILED
;
862 /* Even TMF timed out, return direct. */
863 if ((task
->task_state_flags
& SAS_TASK_STATE_ABORTED
)) {
864 if (!(task
->task_state_flags
& SAS_TASK_STATE_DONE
)) {
865 struct hisi_sas_slot
*slot
= task
->lldd_task
;
867 dev_err(dev
, "abort tmf: TMF task timeout\n");
875 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
876 task
->task_status
.stat
== TMF_RESP_FUNC_COMPLETE
) {
877 res
= TMF_RESP_FUNC_COMPLETE
;
881 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
882 task
->task_status
.stat
== TMF_RESP_FUNC_SUCC
) {
883 res
= TMF_RESP_FUNC_SUCC
;
887 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
888 task
->task_status
.stat
== SAS_DATA_UNDERRUN
) {
889 /* no error, but return the number of bytes of
892 dev_warn(dev
, "abort tmf: task to dev %016llx "
893 "resp: 0x%x sts 0x%x underrun\n",
894 SAS_ADDR(device
->sas_addr
),
895 task
->task_status
.resp
,
896 task
->task_status
.stat
);
897 res
= task
->task_status
.residual
;
901 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
902 task
->task_status
.stat
== SAS_DATA_OVERRUN
) {
903 dev_warn(dev
, "abort tmf: blocked task error\n");
908 dev_warn(dev
, "abort tmf: task to dev "
909 "%016llx resp: 0x%x status 0x%x\n",
910 SAS_ADDR(device
->sas_addr
), task
->task_status
.resp
,
911 task
->task_status
.stat
);
916 if (retry
== TASK_RETRY
)
917 dev_warn(dev
, "abort tmf: executing internal task failed!\n");
922 static void hisi_sas_fill_ata_reset_cmd(struct ata_device
*dev
,
923 bool reset
, int pmp
, u8
*fis
)
925 struct ata_taskfile tf
;
927 ata_tf_init(dev
, &tf
);
932 tf
.command
= ATA_CMD_DEV_RESET
;
933 ata_tf_to_fis(&tf
, pmp
, 0, fis
);
936 static int hisi_sas_softreset_ata_disk(struct domain_device
*device
)
939 struct ata_port
*ap
= device
->sata_dev
.ap
;
940 struct ata_link
*link
;
941 int rc
= TMF_RESP_FUNC_FAILED
;
942 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
943 struct device
*dev
= hisi_hba
->dev
;
944 int s
= sizeof(struct host_to_dev_fis
);
947 ata_for_each_link(link
, ap
, EDGE
) {
948 int pmp
= sata_srst_pmp(link
);
950 hisi_sas_fill_ata_reset_cmd(link
->device
, 1, pmp
, fis
);
951 rc
= hisi_sas_exec_internal_tmf_task(device
, fis
, s
, NULL
);
952 if (rc
!= TMF_RESP_FUNC_COMPLETE
)
956 if (rc
== TMF_RESP_FUNC_COMPLETE
) {
957 ata_for_each_link(link
, ap
, EDGE
) {
958 int pmp
= sata_srst_pmp(link
);
960 hisi_sas_fill_ata_reset_cmd(link
->device
, 0, pmp
, fis
);
961 rc
= hisi_sas_exec_internal_tmf_task(device
, fis
,
963 if (rc
!= TMF_RESP_FUNC_COMPLETE
)
964 dev_err(dev
, "ata disk de-reset failed\n");
967 dev_err(dev
, "ata disk reset failed\n");
970 if (rc
== TMF_RESP_FUNC_COMPLETE
) {
971 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
972 hisi_sas_release_task(hisi_hba
, device
);
973 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
979 static int hisi_sas_debug_issue_ssp_tmf(struct domain_device
*device
,
980 u8
*lun
, struct hisi_sas_tmf_task
*tmf
)
982 struct sas_ssp_task ssp_task
;
984 if (!(device
->tproto
& SAS_PROTOCOL_SSP
))
985 return TMF_RESP_FUNC_ESUPP
;
987 memcpy(ssp_task
.LUN
, lun
, 8);
989 return hisi_sas_exec_internal_tmf_task(device
, &ssp_task
,
990 sizeof(ssp_task
), tmf
);
993 static void hisi_sas_refresh_port_id(struct hisi_hba
*hisi_hba
)
995 u32 state
= hisi_hba
->hw
->get_phys_state(hisi_hba
);
998 for (i
= 0; i
< HISI_SAS_MAX_DEVICES
; i
++) {
999 struct hisi_sas_device
*sas_dev
= &hisi_hba
->devices
[i
];
1000 struct domain_device
*device
= sas_dev
->sas_device
;
1001 struct asd_sas_port
*sas_port
;
1002 struct hisi_sas_port
*port
;
1003 struct hisi_sas_phy
*phy
= NULL
;
1004 struct asd_sas_phy
*sas_phy
;
1006 if ((sas_dev
->dev_type
== SAS_PHY_UNUSED
)
1007 || !device
|| !device
->port
)
1010 sas_port
= device
->port
;
1011 port
= to_hisi_sas_port(sas_port
);
1013 list_for_each_entry(sas_phy
, &sas_port
->phy_list
, port_phy_el
)
1014 if (state
& BIT(sas_phy
->id
)) {
1015 phy
= sas_phy
->lldd_phy
;
1020 port
->id
= phy
->port_id
;
1022 /* Update linkrate of directly attached device. */
1023 if (!device
->parent
)
1024 device
->linkrate
= phy
->sas_phy
.linkrate
;
1026 hisi_hba
->hw
->setup_itct(hisi_hba
, sas_dev
);
1032 static void hisi_sas_rescan_topology(struct hisi_hba
*hisi_hba
, u32 old_state
,
1035 struct sas_ha_struct
*sas_ha
= &hisi_hba
->sha
;
1036 struct asd_sas_port
*_sas_port
= NULL
;
1039 for (phy_no
= 0; phy_no
< hisi_hba
->n_phy
; phy_no
++) {
1040 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
1041 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
1042 struct asd_sas_port
*sas_port
= sas_phy
->port
;
1043 bool do_port_check
= !!(_sas_port
!= sas_port
);
1045 if (!sas_phy
->phy
->enabled
)
1048 /* Report PHY state change to libsas */
1049 if (state
& BIT(phy_no
)) {
1050 if (do_port_check
&& sas_port
&& sas_port
->port_dev
) {
1051 struct domain_device
*dev
= sas_port
->port_dev
;
1053 _sas_port
= sas_port
;
1055 if (DEV_IS_EXPANDER(dev
->dev_type
))
1056 sas_ha
->notify_port_event(sas_phy
,
1057 PORTE_BROADCAST_RCVD
);
1059 } else if (old_state
& (1 << phy_no
))
1060 /* PHY down but was up before */
1061 hisi_sas_phy_down(hisi_hba
, phy_no
, 0);
1065 drain_workqueue(hisi_hba
->shost
->work_q
);
1068 static int hisi_sas_controller_reset(struct hisi_hba
*hisi_hba
)
1070 struct device
*dev
= hisi_hba
->dev
;
1071 struct Scsi_Host
*shost
= hisi_hba
->shost
;
1072 u32 old_state
, state
;
1073 unsigned long flags
;
1076 if (!hisi_hba
->hw
->soft_reset
)
1079 if (test_and_set_bit(HISI_SAS_RESET_BIT
, &hisi_hba
->flags
))
1082 dev_dbg(dev
, "controller resetting...\n");
1083 old_state
= hisi_hba
->hw
->get_phys_state(hisi_hba
);
1085 scsi_block_requests(shost
);
1086 set_bit(HISI_SAS_REJECT_CMD_BIT
, &hisi_hba
->flags
);
1087 rc
= hisi_hba
->hw
->soft_reset(hisi_hba
);
1089 dev_warn(dev
, "controller reset failed (%d)\n", rc
);
1090 clear_bit(HISI_SAS_REJECT_CMD_BIT
, &hisi_hba
->flags
);
1093 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1094 hisi_sas_release_tasks(hisi_hba
);
1095 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1097 clear_bit(HISI_SAS_REJECT_CMD_BIT
, &hisi_hba
->flags
);
1099 /* Init and wait for PHYs to come up and all libsas event finished. */
1100 hisi_hba
->hw
->phys_init(hisi_hba
);
1102 hisi_sas_refresh_port_id(hisi_hba
);
1103 drain_workqueue(hisi_hba
->wq
);
1104 drain_workqueue(shost
->work_q
);
1106 state
= hisi_hba
->hw
->get_phys_state(hisi_hba
);
1107 hisi_sas_rescan_topology(hisi_hba
, old_state
, state
);
1108 dev_dbg(dev
, "controller reset complete\n");
1111 scsi_unblock_requests(shost
);
1112 clear_bit(HISI_SAS_RESET_BIT
, &hisi_hba
->flags
);
1117 static int hisi_sas_abort_task(struct sas_task
*task
)
1119 struct scsi_lun lun
;
1120 struct hisi_sas_tmf_task tmf_task
;
1121 struct domain_device
*device
= task
->dev
;
1122 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
1123 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(task
->dev
);
1124 struct device
*dev
= hisi_hba
->dev
;
1125 int rc
= TMF_RESP_FUNC_FAILED
;
1126 unsigned long flags
;
1129 dev_warn(dev
, "Device has been removed\n");
1130 return TMF_RESP_FUNC_FAILED
;
1133 if (task
->task_state_flags
& SAS_TASK_STATE_DONE
) {
1134 rc
= TMF_RESP_FUNC_COMPLETE
;
1138 sas_dev
->dev_status
= HISI_SAS_DEV_EH
;
1139 if (task
->lldd_task
&& task
->task_proto
& SAS_PROTOCOL_SSP
) {
1140 struct scsi_cmnd
*cmnd
= task
->uldd_task
;
1141 struct hisi_sas_slot
*slot
= task
->lldd_task
;
1142 u32 tag
= slot
->idx
;
1145 int_to_scsilun(cmnd
->device
->lun
, &lun
);
1146 tmf_task
.tmf
= TMF_ABORT_TASK
;
1147 tmf_task
.tag_of_task_to_be_managed
= cpu_to_le16(tag
);
1149 rc
= hisi_sas_debug_issue_ssp_tmf(task
->dev
, lun
.scsi_lun
,
1152 rc2
= hisi_sas_internal_task_abort(hisi_hba
, device
,
1153 HISI_SAS_INT_ABT_CMD
, tag
);
1155 * If the TMF finds that the IO is not in the device and also
1156 * the internal abort does not succeed, then it is safe to
1158 * Note: if the internal abort succeeds then the slot
1159 * will have already been completed
1161 if (rc
== TMF_RESP_FUNC_COMPLETE
&& rc2
!= TMF_RESP_FUNC_SUCC
) {
1162 if (task
->lldd_task
) {
1163 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1164 hisi_sas_do_release_task(hisi_hba
, task
, slot
);
1165 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1168 } else if (task
->task_proto
& SAS_PROTOCOL_SATA
||
1169 task
->task_proto
& SAS_PROTOCOL_STP
) {
1170 if (task
->dev
->dev_type
== SAS_SATA_DEV
) {
1171 hisi_sas_internal_task_abort(hisi_hba
, device
,
1172 HISI_SAS_INT_ABT_DEV
, 0);
1173 hisi_sas_dereg_device(hisi_hba
, device
);
1174 rc
= hisi_sas_softreset_ata_disk(device
);
1176 } else if (task
->lldd_task
&& task
->task_proto
& SAS_PROTOCOL_SMP
) {
1178 struct hisi_sas_slot
*slot
= task
->lldd_task
;
1179 u32 tag
= slot
->idx
;
1181 rc
= hisi_sas_internal_task_abort(hisi_hba
, device
,
1182 HISI_SAS_INT_ABT_CMD
, tag
);
1183 if (rc
== TMF_RESP_FUNC_FAILED
&& task
->lldd_task
) {
1184 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1185 hisi_sas_do_release_task(hisi_hba
, task
, slot
);
1186 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1191 if (rc
!= TMF_RESP_FUNC_COMPLETE
)
1192 dev_notice(dev
, "abort task: rc=%d\n", rc
);
1196 static int hisi_sas_abort_task_set(struct domain_device
*device
, u8
*lun
)
1198 struct hisi_sas_tmf_task tmf_task
;
1199 int rc
= TMF_RESP_FUNC_FAILED
;
1201 tmf_task
.tmf
= TMF_ABORT_TASK_SET
;
1202 rc
= hisi_sas_debug_issue_ssp_tmf(device
, lun
, &tmf_task
);
1207 static int hisi_sas_clear_aca(struct domain_device
*device
, u8
*lun
)
1209 int rc
= TMF_RESP_FUNC_FAILED
;
1210 struct hisi_sas_tmf_task tmf_task
;
1212 tmf_task
.tmf
= TMF_CLEAR_ACA
;
1213 rc
= hisi_sas_debug_issue_ssp_tmf(device
, lun
, &tmf_task
);
1218 static int hisi_sas_debug_I_T_nexus_reset(struct domain_device
*device
)
1220 struct sas_phy
*phy
= sas_get_local_phy(device
);
1221 int rc
, reset_type
= (device
->dev_type
== SAS_SATA_DEV
||
1222 (device
->tproto
& SAS_PROTOCOL_STP
)) ? 0 : 1;
1223 rc
= sas_phy_reset(phy
, reset_type
);
1224 sas_put_local_phy(phy
);
1229 static int hisi_sas_I_T_nexus_reset(struct domain_device
*device
)
1231 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
1232 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
1233 unsigned long flags
;
1234 int rc
= TMF_RESP_FUNC_FAILED
;
1236 if (sas_dev
->dev_status
!= HISI_SAS_DEV_EH
)
1237 return TMF_RESP_FUNC_FAILED
;
1238 sas_dev
->dev_status
= HISI_SAS_DEV_NORMAL
;
1240 hisi_sas_internal_task_abort(hisi_hba
, device
,
1241 HISI_SAS_INT_ABT_DEV
, 0);
1242 hisi_sas_dereg_device(hisi_hba
, device
);
1244 rc
= hisi_sas_debug_I_T_nexus_reset(device
);
1246 if (rc
== TMF_RESP_FUNC_COMPLETE
) {
1247 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1248 hisi_sas_release_task(hisi_hba
, device
);
1249 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1254 static int hisi_sas_lu_reset(struct domain_device
*device
, u8
*lun
)
1256 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
1257 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
1258 struct device
*dev
= hisi_hba
->dev
;
1259 unsigned long flags
;
1260 int rc
= TMF_RESP_FUNC_FAILED
;
1262 sas_dev
->dev_status
= HISI_SAS_DEV_EH
;
1263 if (dev_is_sata(device
)) {
1264 struct sas_phy
*phy
;
1266 /* Clear internal IO and then hardreset */
1267 rc
= hisi_sas_internal_task_abort(hisi_hba
, device
,
1268 HISI_SAS_INT_ABT_DEV
, 0);
1269 if (rc
== TMF_RESP_FUNC_FAILED
)
1271 hisi_sas_dereg_device(hisi_hba
, device
);
1273 phy
= sas_get_local_phy(device
);
1275 rc
= sas_phy_reset(phy
, 1);
1278 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1279 hisi_sas_release_task(hisi_hba
, device
);
1280 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1282 sas_put_local_phy(phy
);
1284 struct hisi_sas_tmf_task tmf_task
= { .tmf
= TMF_LU_RESET
};
1286 rc
= hisi_sas_debug_issue_ssp_tmf(device
, lun
, &tmf_task
);
1287 if (rc
== TMF_RESP_FUNC_COMPLETE
) {
1288 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1289 hisi_sas_release_task(hisi_hba
, device
);
1290 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1294 if (rc
!= TMF_RESP_FUNC_COMPLETE
)
1295 dev_err(dev
, "lu_reset: for device[%d]:rc= %d\n",
1296 sas_dev
->device_id
, rc
);
1300 static int hisi_sas_clear_nexus_ha(struct sas_ha_struct
*sas_ha
)
1302 struct hisi_hba
*hisi_hba
= sas_ha
->lldd_ha
;
1304 return hisi_sas_controller_reset(hisi_hba
);
1307 static int hisi_sas_query_task(struct sas_task
*task
)
1309 struct scsi_lun lun
;
1310 struct hisi_sas_tmf_task tmf_task
;
1311 int rc
= TMF_RESP_FUNC_FAILED
;
1313 if (task
->lldd_task
&& task
->task_proto
& SAS_PROTOCOL_SSP
) {
1314 struct scsi_cmnd
*cmnd
= task
->uldd_task
;
1315 struct domain_device
*device
= task
->dev
;
1316 struct hisi_sas_slot
*slot
= task
->lldd_task
;
1317 u32 tag
= slot
->idx
;
1319 int_to_scsilun(cmnd
->device
->lun
, &lun
);
1320 tmf_task
.tmf
= TMF_QUERY_TASK
;
1321 tmf_task
.tag_of_task_to_be_managed
= cpu_to_le16(tag
);
1323 rc
= hisi_sas_debug_issue_ssp_tmf(device
,
1327 /* The task is still in Lun, release it then */
1328 case TMF_RESP_FUNC_SUCC
:
1329 /* The task is not in Lun or failed, reset the phy */
1330 case TMF_RESP_FUNC_FAILED
:
1331 case TMF_RESP_FUNC_COMPLETE
:
1334 rc
= TMF_RESP_FUNC_FAILED
;
1342 hisi_sas_internal_abort_task_exec(struct hisi_hba
*hisi_hba
, int device_id
,
1343 struct sas_task
*task
, int abort_flag
,
1346 struct domain_device
*device
= task
->dev
;
1347 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
1348 struct device
*dev
= hisi_hba
->dev
;
1349 struct hisi_sas_port
*port
;
1350 struct hisi_sas_slot
*slot
;
1351 struct asd_sas_port
*sas_port
= device
->port
;
1352 struct hisi_sas_cmd_hdr
*cmd_hdr_base
;
1353 struct hisi_sas_dq
*dq
= sas_dev
->dq
;
1354 int dlvry_queue_slot
, dlvry_queue
, n_elem
= 0, rc
, slot_idx
;
1355 unsigned long flags
, flags_dq
;
1357 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT
, &hisi_hba
->flags
)))
1363 port
= to_hisi_sas_port(sas_port
);
1365 /* simply get a slot and send abort command */
1366 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1367 rc
= hisi_sas_slot_index_alloc(hisi_hba
, &slot_idx
);
1369 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1372 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1374 spin_lock_irqsave(&dq
->lock
, flags_dq
);
1375 rc
= hisi_hba
->hw
->get_free_slot(hisi_hba
, dq
);
1379 dlvry_queue
= dq
->id
;
1380 dlvry_queue_slot
= dq
->wr_point
;
1382 slot
= &hisi_hba
->slot_info
[slot_idx
];
1383 memset(slot
, 0, sizeof(struct hisi_sas_slot
));
1385 slot
->idx
= slot_idx
;
1386 slot
->n_elem
= n_elem
;
1387 slot
->dlvry_queue
= dlvry_queue
;
1388 slot
->dlvry_queue_slot
= dlvry_queue_slot
;
1389 cmd_hdr_base
= hisi_hba
->cmd_hdr
[dlvry_queue
];
1390 slot
->cmd_hdr
= &cmd_hdr_base
[dlvry_queue_slot
];
1393 task
->lldd_task
= slot
;
1395 slot
->buf
= dma_pool_alloc(hisi_hba
->buffer_pool
,
1396 GFP_ATOMIC
, &slot
->buf_dma
);
1402 memset(slot
->cmd_hdr
, 0, sizeof(struct hisi_sas_cmd_hdr
));
1403 memset(hisi_sas_cmd_hdr_addr_mem(slot
), 0, HISI_SAS_COMMAND_TABLE_SZ
);
1404 memset(hisi_sas_status_buf_addr_mem(slot
), 0, HISI_SAS_STATUS_BUF_SZ
);
1406 rc
= hisi_sas_task_prep_abort(hisi_hba
, slot
, device_id
,
1407 abort_flag
, task_tag
);
1411 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1412 list_add_tail(&slot
->entry
, &sas_dev
->list
);
1413 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1414 spin_lock_irqsave(&task
->task_state_lock
, flags
);
1415 task
->task_state_flags
|= SAS_TASK_AT_INITIATOR
;
1416 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
1418 dq
->slot_prep
= slot
;
1420 atomic64_inc(&sas_dev
->running_req
);
1422 /* send abort command to the chip */
1423 hisi_hba
->hw
->start_delivery(dq
);
1424 spin_unlock_irqrestore(&dq
->lock
, flags_dq
);
1429 dma_pool_free(hisi_hba
->buffer_pool
, slot
->buf
,
1432 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1433 hisi_sas_slot_index_free(hisi_hba
, slot_idx
);
1434 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1435 spin_unlock_irqrestore(&dq
->lock
, flags_dq
);
1437 dev_err(dev
, "internal abort task prep: failed[%d]!\n", rc
);
1443 * hisi_sas_internal_task_abort -- execute an internal
1444 * abort command for single IO command or a device
1445 * @hisi_hba: host controller struct
1446 * @device: domain device
1447 * @abort_flag: mode of operation, device or single IO
1448 * @tag: tag of IO to be aborted (only relevant to single
1452 hisi_sas_internal_task_abort(struct hisi_hba
*hisi_hba
,
1453 struct domain_device
*device
,
1454 int abort_flag
, int tag
)
1456 struct sas_task
*task
;
1457 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
1458 struct device
*dev
= hisi_hba
->dev
;
1461 if (!hisi_hba
->hw
->prep_abort
)
1464 task
= sas_alloc_slow_task(GFP_KERNEL
);
1469 task
->task_proto
= device
->tproto
;
1470 task
->task_done
= hisi_sas_task_done
;
1471 task
->slow_task
->timer
.function
= hisi_sas_tmf_timedout
;
1472 task
->slow_task
->timer
.expires
= jiffies
+ msecs_to_jiffies(110);
1473 add_timer(&task
->slow_task
->timer
);
1475 res
= hisi_sas_internal_abort_task_exec(hisi_hba
, sas_dev
->device_id
,
1476 task
, abort_flag
, tag
);
1478 del_timer(&task
->slow_task
->timer
);
1479 dev_err(dev
, "internal task abort: executing internal task failed: %d\n",
1483 wait_for_completion(&task
->slow_task
->completion
);
1484 res
= TMF_RESP_FUNC_FAILED
;
1486 /* Internal abort timed out */
1487 if ((task
->task_state_flags
& SAS_TASK_STATE_ABORTED
)) {
1488 if (!(task
->task_state_flags
& SAS_TASK_STATE_DONE
)) {
1489 struct hisi_sas_slot
*slot
= task
->lldd_task
;
1493 dev_err(dev
, "internal task abort: timeout.\n");
1498 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
1499 task
->task_status
.stat
== TMF_RESP_FUNC_COMPLETE
) {
1500 res
= TMF_RESP_FUNC_COMPLETE
;
1504 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
1505 task
->task_status
.stat
== TMF_RESP_FUNC_SUCC
) {
1506 res
= TMF_RESP_FUNC_SUCC
;
1511 dev_dbg(dev
, "internal task abort: task to dev %016llx task=%p "
1512 "resp: 0x%x sts 0x%x\n",
1513 SAS_ADDR(device
->sas_addr
),
1515 task
->task_status
.resp
, /* 0 is complete, -1 is undelivered */
1516 task
->task_status
.stat
);
1517 sas_free_task(task
);
1522 static void hisi_sas_port_formed(struct asd_sas_phy
*sas_phy
)
1524 hisi_sas_port_notify_formed(sas_phy
);
1527 static int hisi_sas_write_gpio(struct sas_ha_struct
*sha
, u8 reg_type
,
1528 u8 reg_index
, u8 reg_count
, u8
*write_data
)
1530 struct hisi_hba
*hisi_hba
= sha
->lldd_ha
;
1532 if (!hisi_hba
->hw
->write_gpio
)
1535 return hisi_hba
->hw
->write_gpio(hisi_hba
, reg_type
,
1536 reg_index
, reg_count
, write_data
);
1539 static void hisi_sas_phy_disconnected(struct hisi_sas_phy
*phy
)
1541 phy
->phy_attached
= 0;
1546 void hisi_sas_phy_down(struct hisi_hba
*hisi_hba
, int phy_no
, int rdy
)
1548 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
1549 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
1550 struct sas_ha_struct
*sas_ha
= &hisi_hba
->sha
;
1553 /* Phy down but ready */
1554 hisi_sas_bytes_dmaed(hisi_hba
, phy_no
);
1555 hisi_sas_port_notify_formed(sas_phy
);
1557 struct hisi_sas_port
*port
= phy
->port
;
1559 /* Phy down and not ready */
1560 sas_ha
->notify_phy_event(sas_phy
, PHYE_LOSS_OF_SIGNAL
);
1561 sas_phy_disconnected(sas_phy
);
1564 if (phy
->phy_type
& PORT_TYPE_SAS
) {
1565 int port_id
= port
->id
;
1567 if (!hisi_hba
->hw
->get_wideport_bitmap(hisi_hba
,
1569 port
->port_attached
= 0;
1570 } else if (phy
->phy_type
& PORT_TYPE_SATA
)
1571 port
->port_attached
= 0;
1573 hisi_sas_phy_disconnected(phy
);
1576 EXPORT_SYMBOL_GPL(hisi_sas_phy_down
);
1578 void hisi_sas_kill_tasklets(struct hisi_hba
*hisi_hba
)
1582 for (i
= 0; i
< hisi_hba
->queue_count
; i
++) {
1583 struct hisi_sas_cq
*cq
= &hisi_hba
->cq
[i
];
1585 tasklet_kill(&cq
->tasklet
);
1588 EXPORT_SYMBOL_GPL(hisi_sas_kill_tasklets
);
1590 struct scsi_transport_template
*hisi_sas_stt
;
1591 EXPORT_SYMBOL_GPL(hisi_sas_stt
);
1593 struct device_attribute
*host_attrs
[] = {
1594 &dev_attr_phy_event_threshold
,
1598 static struct scsi_host_template _hisi_sas_sht
= {
1599 .module
= THIS_MODULE
,
1601 .queuecommand
= sas_queuecommand
,
1602 .target_alloc
= sas_target_alloc
,
1603 .slave_configure
= hisi_sas_slave_configure
,
1604 .scan_finished
= hisi_sas_scan_finished
,
1605 .scan_start
= hisi_sas_scan_start
,
1606 .change_queue_depth
= sas_change_queue_depth
,
1607 .bios_param
= sas_bios_param
,
1610 .sg_tablesize
= SG_ALL
,
1611 .max_sectors
= SCSI_DEFAULT_MAX_SECTORS
,
1612 .use_clustering
= ENABLE_CLUSTERING
,
1613 .eh_device_reset_handler
= sas_eh_device_reset_handler
,
1614 .eh_target_reset_handler
= sas_eh_target_reset_handler
,
1615 .target_destroy
= sas_target_destroy
,
1617 .shost_attrs
= host_attrs
,
1619 struct scsi_host_template
*hisi_sas_sht
= &_hisi_sas_sht
;
1620 EXPORT_SYMBOL_GPL(hisi_sas_sht
);
1622 static struct sas_domain_function_template hisi_sas_transport_ops
= {
1623 .lldd_dev_found
= hisi_sas_dev_found
,
1624 .lldd_dev_gone
= hisi_sas_dev_gone
,
1625 .lldd_execute_task
= hisi_sas_queue_command
,
1626 .lldd_control_phy
= hisi_sas_control_phy
,
1627 .lldd_abort_task
= hisi_sas_abort_task
,
1628 .lldd_abort_task_set
= hisi_sas_abort_task_set
,
1629 .lldd_clear_aca
= hisi_sas_clear_aca
,
1630 .lldd_I_T_nexus_reset
= hisi_sas_I_T_nexus_reset
,
1631 .lldd_lu_reset
= hisi_sas_lu_reset
,
1632 .lldd_query_task
= hisi_sas_query_task
,
1633 .lldd_clear_nexus_ha
= hisi_sas_clear_nexus_ha
,
1634 .lldd_port_formed
= hisi_sas_port_formed
,
1635 .lldd_write_gpio
= hisi_sas_write_gpio
,
1638 void hisi_sas_init_mem(struct hisi_hba
*hisi_hba
)
1640 int i
, s
, max_command_entries
= hisi_hba
->hw
->max_command_entries
;
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 s
= sizeof(struct hisi_sas_cmd_hdr
) * HISI_SAS_QUEUE_SLOTS
;
1647 memset(hisi_hba
->cmd_hdr
[i
], 0, s
);
1650 s
= hisi_hba
->hw
->complete_hdr_size
* HISI_SAS_QUEUE_SLOTS
;
1651 memset(hisi_hba
->complete_hdr
[i
], 0, s
);
1655 s
= sizeof(struct hisi_sas_initial_fis
) * hisi_hba
->n_phy
;
1656 memset(hisi_hba
->initial_fis
, 0, s
);
1658 s
= max_command_entries
* sizeof(struct hisi_sas_iost
);
1659 memset(hisi_hba
->iost
, 0, s
);
1661 s
= max_command_entries
* sizeof(struct hisi_sas_breakpoint
);
1662 memset(hisi_hba
->breakpoint
, 0, s
);
1664 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_sata_breakpoint
);
1665 memset(hisi_hba
->sata_breakpoint
, 0, s
);
1667 EXPORT_SYMBOL_GPL(hisi_sas_init_mem
);
1669 int hisi_sas_alloc(struct hisi_hba
*hisi_hba
, struct Scsi_Host
*shost
)
1671 struct device
*dev
= hisi_hba
->dev
;
1672 int i
, s
, max_command_entries
= hisi_hba
->hw
->max_command_entries
;
1674 spin_lock_init(&hisi_hba
->lock
);
1675 for (i
= 0; i
< hisi_hba
->n_phy
; i
++) {
1676 hisi_sas_phy_init(hisi_hba
, i
);
1677 hisi_hba
->port
[i
].port_attached
= 0;
1678 hisi_hba
->port
[i
].id
= -1;
1681 for (i
= 0; i
< HISI_SAS_MAX_DEVICES
; i
++) {
1682 hisi_hba
->devices
[i
].dev_type
= SAS_PHY_UNUSED
;
1683 hisi_hba
->devices
[i
].device_id
= i
;
1684 hisi_hba
->devices
[i
].dev_status
= HISI_SAS_DEV_NORMAL
;
1687 for (i
= 0; i
< hisi_hba
->queue_count
; i
++) {
1688 struct hisi_sas_cq
*cq
= &hisi_hba
->cq
[i
];
1689 struct hisi_sas_dq
*dq
= &hisi_hba
->dq
[i
];
1691 /* Completion queue structure */
1693 cq
->hisi_hba
= hisi_hba
;
1695 /* Delivery queue structure */
1697 dq
->hisi_hba
= hisi_hba
;
1699 /* Delivery queue */
1700 s
= sizeof(struct hisi_sas_cmd_hdr
) * HISI_SAS_QUEUE_SLOTS
;
1701 hisi_hba
->cmd_hdr
[i
] = dma_alloc_coherent(dev
, s
,
1702 &hisi_hba
->cmd_hdr_dma
[i
], GFP_KERNEL
);
1703 if (!hisi_hba
->cmd_hdr
[i
])
1706 /* Completion queue */
1707 s
= hisi_hba
->hw
->complete_hdr_size
* HISI_SAS_QUEUE_SLOTS
;
1708 hisi_hba
->complete_hdr
[i
] = dma_alloc_coherent(dev
, s
,
1709 &hisi_hba
->complete_hdr_dma
[i
], GFP_KERNEL
);
1710 if (!hisi_hba
->complete_hdr
[i
])
1714 s
= sizeof(struct hisi_sas_slot_buf_table
);
1715 hisi_hba
->buffer_pool
= dma_pool_create("dma_buffer", dev
, s
, 16, 0);
1716 if (!hisi_hba
->buffer_pool
)
1719 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_itct
);
1720 hisi_hba
->itct
= dma_alloc_coherent(dev
, s
, &hisi_hba
->itct_dma
,
1722 if (!hisi_hba
->itct
)
1725 memset(hisi_hba
->itct
, 0, s
);
1727 hisi_hba
->slot_info
= devm_kcalloc(dev
, max_command_entries
,
1728 sizeof(struct hisi_sas_slot
),
1730 if (!hisi_hba
->slot_info
)
1733 s
= max_command_entries
* sizeof(struct hisi_sas_iost
);
1734 hisi_hba
->iost
= dma_alloc_coherent(dev
, s
, &hisi_hba
->iost_dma
,
1736 if (!hisi_hba
->iost
)
1739 s
= max_command_entries
* sizeof(struct hisi_sas_breakpoint
);
1740 hisi_hba
->breakpoint
= dma_alloc_coherent(dev
, s
,
1741 &hisi_hba
->breakpoint_dma
, GFP_KERNEL
);
1742 if (!hisi_hba
->breakpoint
)
1745 hisi_hba
->slot_index_count
= max_command_entries
;
1746 s
= hisi_hba
->slot_index_count
/ BITS_PER_BYTE
;
1747 hisi_hba
->slot_index_tags
= devm_kzalloc(dev
, s
, GFP_KERNEL
);
1748 if (!hisi_hba
->slot_index_tags
)
1751 s
= sizeof(struct hisi_sas_initial_fis
) * HISI_SAS_MAX_PHYS
;
1752 hisi_hba
->initial_fis
= dma_alloc_coherent(dev
, s
,
1753 &hisi_hba
->initial_fis_dma
, GFP_KERNEL
);
1754 if (!hisi_hba
->initial_fis
)
1757 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_sata_breakpoint
);
1758 hisi_hba
->sata_breakpoint
= dma_alloc_coherent(dev
, s
,
1759 &hisi_hba
->sata_breakpoint_dma
, GFP_KERNEL
);
1760 if (!hisi_hba
->sata_breakpoint
)
1762 hisi_sas_init_mem(hisi_hba
);
1764 hisi_sas_slot_index_init(hisi_hba
);
1766 hisi_hba
->wq
= create_singlethread_workqueue(dev_name(dev
));
1767 if (!hisi_hba
->wq
) {
1768 dev_err(dev
, "sas_alloc: failed to create workqueue\n");
1776 EXPORT_SYMBOL_GPL(hisi_sas_alloc
);
1778 void hisi_sas_free(struct hisi_hba
*hisi_hba
)
1780 struct device
*dev
= hisi_hba
->dev
;
1781 int i
, s
, max_command_entries
= hisi_hba
->hw
->max_command_entries
;
1783 for (i
= 0; i
< hisi_hba
->queue_count
; i
++) {
1784 s
= sizeof(struct hisi_sas_cmd_hdr
) * HISI_SAS_QUEUE_SLOTS
;
1785 if (hisi_hba
->cmd_hdr
[i
])
1786 dma_free_coherent(dev
, s
,
1787 hisi_hba
->cmd_hdr
[i
],
1788 hisi_hba
->cmd_hdr_dma
[i
]);
1790 s
= hisi_hba
->hw
->complete_hdr_size
* HISI_SAS_QUEUE_SLOTS
;
1791 if (hisi_hba
->complete_hdr
[i
])
1792 dma_free_coherent(dev
, s
,
1793 hisi_hba
->complete_hdr
[i
],
1794 hisi_hba
->complete_hdr_dma
[i
]);
1797 dma_pool_destroy(hisi_hba
->buffer_pool
);
1799 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_itct
);
1801 dma_free_coherent(dev
, s
,
1802 hisi_hba
->itct
, hisi_hba
->itct_dma
);
1804 s
= max_command_entries
* sizeof(struct hisi_sas_iost
);
1806 dma_free_coherent(dev
, s
,
1807 hisi_hba
->iost
, hisi_hba
->iost_dma
);
1809 s
= max_command_entries
* sizeof(struct hisi_sas_breakpoint
);
1810 if (hisi_hba
->breakpoint
)
1811 dma_free_coherent(dev
, s
,
1812 hisi_hba
->breakpoint
,
1813 hisi_hba
->breakpoint_dma
);
1816 s
= sizeof(struct hisi_sas_initial_fis
) * HISI_SAS_MAX_PHYS
;
1817 if (hisi_hba
->initial_fis
)
1818 dma_free_coherent(dev
, s
,
1819 hisi_hba
->initial_fis
,
1820 hisi_hba
->initial_fis_dma
);
1822 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_sata_breakpoint
);
1823 if (hisi_hba
->sata_breakpoint
)
1824 dma_free_coherent(dev
, s
,
1825 hisi_hba
->sata_breakpoint
,
1826 hisi_hba
->sata_breakpoint_dma
);
1829 destroy_workqueue(hisi_hba
->wq
);
1831 EXPORT_SYMBOL_GPL(hisi_sas_free
);
1833 void hisi_sas_rst_work_handler(struct work_struct
*work
)
1835 struct hisi_hba
*hisi_hba
=
1836 container_of(work
, struct hisi_hba
, rst_work
);
1838 hisi_sas_controller_reset(hisi_hba
);
1840 EXPORT_SYMBOL_GPL(hisi_sas_rst_work_handler
);
1842 int hisi_sas_get_fw_info(struct hisi_hba
*hisi_hba
)
1844 struct device
*dev
= hisi_hba
->dev
;
1845 struct platform_device
*pdev
= hisi_hba
->platform_dev
;
1846 struct device_node
*np
= pdev
? pdev
->dev
.of_node
: NULL
;
1849 if (device_property_read_u8_array(dev
, "sas-addr", hisi_hba
->sas_addr
,
1851 dev_err(dev
, "could not get property sas-addr\n");
1857 * These properties are only required for platform device-based
1858 * controller with DT firmware.
1860 hisi_hba
->ctrl
= syscon_regmap_lookup_by_phandle(np
,
1861 "hisilicon,sas-syscon");
1862 if (IS_ERR(hisi_hba
->ctrl
)) {
1863 dev_err(dev
, "could not get syscon\n");
1867 if (device_property_read_u32(dev
, "ctrl-reset-reg",
1868 &hisi_hba
->ctrl_reset_reg
)) {
1870 "could not get property ctrl-reset-reg\n");
1874 if (device_property_read_u32(dev
, "ctrl-reset-sts-reg",
1875 &hisi_hba
->ctrl_reset_sts_reg
)) {
1877 "could not get property ctrl-reset-sts-reg\n");
1881 if (device_property_read_u32(dev
, "ctrl-clock-ena-reg",
1882 &hisi_hba
->ctrl_clock_ena_reg
)) {
1884 "could not get property ctrl-clock-ena-reg\n");
1889 refclk
= devm_clk_get(dev
, NULL
);
1891 dev_dbg(dev
, "no ref clk property\n");
1893 hisi_hba
->refclk_frequency_mhz
= clk_get_rate(refclk
) / 1000000;
1895 if (device_property_read_u32(dev
, "phy-count", &hisi_hba
->n_phy
)) {
1896 dev_err(dev
, "could not get property phy-count\n");
1900 if (device_property_read_u32(dev
, "queue-count",
1901 &hisi_hba
->queue_count
)) {
1902 dev_err(dev
, "could not get property queue-count\n");
1908 EXPORT_SYMBOL_GPL(hisi_sas_get_fw_info
);
1910 static struct Scsi_Host
*hisi_sas_shost_alloc(struct platform_device
*pdev
,
1911 const struct hisi_sas_hw
*hw
)
1913 struct resource
*res
;
1914 struct Scsi_Host
*shost
;
1915 struct hisi_hba
*hisi_hba
;
1916 struct device
*dev
= &pdev
->dev
;
1918 shost
= scsi_host_alloc(hisi_sas_sht
, sizeof(*hisi_hba
));
1920 dev_err(dev
, "scsi host alloc failed\n");
1923 hisi_hba
= shost_priv(shost
);
1925 INIT_WORK(&hisi_hba
->rst_work
, hisi_sas_rst_work_handler
);
1927 hisi_hba
->dev
= dev
;
1928 hisi_hba
->platform_dev
= pdev
;
1929 hisi_hba
->shost
= shost
;
1930 SHOST_TO_SAS_HA(shost
) = &hisi_hba
->sha
;
1932 timer_setup(&hisi_hba
->timer
, NULL
, 0);
1934 if (hisi_sas_get_fw_info(hisi_hba
) < 0)
1937 if (dma_set_mask_and_coherent(dev
, DMA_BIT_MASK(64)) &&
1938 dma_set_mask_and_coherent(dev
, DMA_BIT_MASK(32))) {
1939 dev_err(dev
, "No usable DMA addressing method\n");
1943 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
1944 hisi_hba
->regs
= devm_ioremap_resource(dev
, res
);
1945 if (IS_ERR(hisi_hba
->regs
))
1948 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 1);
1950 hisi_hba
->sgpio_regs
= devm_ioremap_resource(dev
, res
);
1951 if (IS_ERR(hisi_hba
->sgpio_regs
))
1955 if (hisi_sas_alloc(hisi_hba
, shost
)) {
1956 hisi_sas_free(hisi_hba
);
1962 scsi_host_put(shost
);
1963 dev_err(dev
, "shost alloc failed\n");
1967 void hisi_sas_init_add(struct hisi_hba
*hisi_hba
)
1971 for (i
= 0; i
< hisi_hba
->n_phy
; i
++)
1972 memcpy(&hisi_hba
->phy
[i
].dev_sas_addr
,
1976 EXPORT_SYMBOL_GPL(hisi_sas_init_add
);
1978 int hisi_sas_probe(struct platform_device
*pdev
,
1979 const struct hisi_sas_hw
*hw
)
1981 struct Scsi_Host
*shost
;
1982 struct hisi_hba
*hisi_hba
;
1983 struct device
*dev
= &pdev
->dev
;
1984 struct asd_sas_phy
**arr_phy
;
1985 struct asd_sas_port
**arr_port
;
1986 struct sas_ha_struct
*sha
;
1987 int rc
, phy_nr
, port_nr
, i
;
1989 shost
= hisi_sas_shost_alloc(pdev
, hw
);
1993 sha
= SHOST_TO_SAS_HA(shost
);
1994 hisi_hba
= shost_priv(shost
);
1995 platform_set_drvdata(pdev
, sha
);
1997 phy_nr
= port_nr
= hisi_hba
->n_phy
;
1999 arr_phy
= devm_kcalloc(dev
, phy_nr
, sizeof(void *), GFP_KERNEL
);
2000 arr_port
= devm_kcalloc(dev
, port_nr
, sizeof(void *), GFP_KERNEL
);
2001 if (!arr_phy
|| !arr_port
) {
2006 sha
->sas_phy
= arr_phy
;
2007 sha
->sas_port
= arr_port
;
2008 sha
->lldd_ha
= hisi_hba
;
2010 shost
->transportt
= hisi_sas_stt
;
2011 shost
->max_id
= HISI_SAS_MAX_DEVICES
;
2012 shost
->max_lun
= ~0;
2013 shost
->max_channel
= 1;
2014 shost
->max_cmd_len
= 16;
2015 shost
->sg_tablesize
= min_t(u16
, SG_ALL
, HISI_SAS_SGE_PAGE_CNT
);
2016 shost
->can_queue
= hisi_hba
->hw
->max_command_entries
;
2017 shost
->cmd_per_lun
= hisi_hba
->hw
->max_command_entries
;
2019 sha
->sas_ha_name
= DRV_NAME
;
2020 sha
->dev
= hisi_hba
->dev
;
2021 sha
->lldd_module
= THIS_MODULE
;
2022 sha
->sas_addr
= &hisi_hba
->sas_addr
[0];
2023 sha
->num_phys
= hisi_hba
->n_phy
;
2024 sha
->core
.shost
= hisi_hba
->shost
;
2026 for (i
= 0; i
< hisi_hba
->n_phy
; i
++) {
2027 sha
->sas_phy
[i
] = &hisi_hba
->phy
[i
].sas_phy
;
2028 sha
->sas_port
[i
] = &hisi_hba
->port
[i
].sas_port
;
2031 hisi_sas_init_add(hisi_hba
);
2033 rc
= scsi_add_host(shost
, &pdev
->dev
);
2037 rc
= sas_register_ha(sha
);
2039 goto err_out_register_ha
;
2041 rc
= hisi_hba
->hw
->hw_init(hisi_hba
);
2043 goto err_out_register_ha
;
2045 scsi_scan_host(shost
);
2049 err_out_register_ha
:
2050 scsi_remove_host(shost
);
2052 hisi_sas_free(hisi_hba
);
2053 scsi_host_put(shost
);
2056 EXPORT_SYMBOL_GPL(hisi_sas_probe
);
2058 int hisi_sas_remove(struct platform_device
*pdev
)
2060 struct sas_ha_struct
*sha
= platform_get_drvdata(pdev
);
2061 struct hisi_hba
*hisi_hba
= sha
->lldd_ha
;
2062 struct Scsi_Host
*shost
= sha
->core
.shost
;
2064 sas_unregister_ha(sha
);
2065 sas_remove_host(sha
->core
.shost
);
2067 hisi_sas_free(hisi_hba
);
2068 scsi_host_put(shost
);
2071 EXPORT_SYMBOL_GPL(hisi_sas_remove
);
2073 static __init
int hisi_sas_init(void)
2075 hisi_sas_stt
= sas_domain_attach_transport(&hisi_sas_transport_ops
);
2082 static __exit
void hisi_sas_exit(void)
2084 sas_release_transport(hisi_sas_stt
);
2087 module_init(hisi_sas_init
);
2088 module_exit(hisi_sas_exit
);
2090 MODULE_LICENSE("GPL");
2091 MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
2092 MODULE_DESCRIPTION("HISILICON SAS controller driver");
2093 MODULE_ALIAS("platform:" DRV_NAME
);