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
);
25 static int hisi_sas_control_phy(struct asd_sas_phy
*sas_phy
, enum phy_func func
,
28 u8
hisi_sas_get_ata_protocol(struct host_to_dev_fis
*fis
, int direction
)
30 switch (fis
->command
) {
31 case ATA_CMD_FPDMA_WRITE
:
32 case ATA_CMD_FPDMA_READ
:
33 case ATA_CMD_FPDMA_RECV
:
34 case ATA_CMD_FPDMA_SEND
:
35 case ATA_CMD_NCQ_NON_DATA
:
36 return HISI_SAS_SATA_PROTOCOL_FPDMA
;
38 case ATA_CMD_DOWNLOAD_MICRO
:
40 case ATA_CMD_PMP_READ
:
41 case ATA_CMD_READ_LOG_EXT
:
42 case ATA_CMD_PIO_READ
:
43 case ATA_CMD_PIO_READ_EXT
:
44 case ATA_CMD_PMP_WRITE
:
45 case ATA_CMD_WRITE_LOG_EXT
:
46 case ATA_CMD_PIO_WRITE
:
47 case ATA_CMD_PIO_WRITE_EXT
:
48 return HISI_SAS_SATA_PROTOCOL_PIO
;
51 case ATA_CMD_DOWNLOAD_MICRO_DMA
:
52 case ATA_CMD_PMP_READ_DMA
:
53 case ATA_CMD_PMP_WRITE_DMA
:
55 case ATA_CMD_READ_EXT
:
56 case ATA_CMD_READ_LOG_DMA_EXT
:
57 case ATA_CMD_READ_STREAM_DMA_EXT
:
58 case ATA_CMD_TRUSTED_RCV_DMA
:
59 case ATA_CMD_TRUSTED_SND_DMA
:
61 case ATA_CMD_WRITE_EXT
:
62 case ATA_CMD_WRITE_FUA_EXT
:
63 case ATA_CMD_WRITE_QUEUED
:
64 case ATA_CMD_WRITE_LOG_DMA_EXT
:
65 case ATA_CMD_WRITE_STREAM_DMA_EXT
:
66 case ATA_CMD_ZAC_MGMT_IN
:
67 return HISI_SAS_SATA_PROTOCOL_DMA
;
69 case ATA_CMD_CHK_POWER
:
70 case ATA_CMD_DEV_RESET
:
73 case ATA_CMD_FLUSH_EXT
:
75 case ATA_CMD_VERIFY_EXT
:
76 case ATA_CMD_SET_FEATURES
:
78 case ATA_CMD_STANDBYNOW1
:
79 case ATA_CMD_ZAC_MGMT_OUT
:
80 return HISI_SAS_SATA_PROTOCOL_NONDATA
;
83 if (fis
->command
== ATA_CMD_SET_MAX
) {
84 switch (fis
->features
) {
85 case ATA_SET_MAX_PASSWD
:
86 case ATA_SET_MAX_LOCK
:
87 return HISI_SAS_SATA_PROTOCOL_PIO
;
89 case ATA_SET_MAX_PASSWD_DMA
:
90 case ATA_SET_MAX_UNLOCK_DMA
:
91 return HISI_SAS_SATA_PROTOCOL_DMA
;
94 return HISI_SAS_SATA_PROTOCOL_NONDATA
;
97 if (direction
== DMA_NONE
)
98 return HISI_SAS_SATA_PROTOCOL_NONDATA
;
99 return HISI_SAS_SATA_PROTOCOL_PIO
;
103 EXPORT_SYMBOL_GPL(hisi_sas_get_ata_protocol
);
105 void hisi_sas_sata_done(struct sas_task
*task
,
106 struct hisi_sas_slot
*slot
)
108 struct task_status_struct
*ts
= &task
->task_status
;
109 struct ata_task_resp
*resp
= (struct ata_task_resp
*)ts
->buf
;
110 struct hisi_sas_status_buffer
*status_buf
=
111 hisi_sas_status_buf_addr_mem(slot
);
112 u8
*iu
= &status_buf
->iu
[0];
113 struct dev_to_host_fis
*d2h
= (struct dev_to_host_fis
*)iu
;
115 resp
->frame_len
= sizeof(struct dev_to_host_fis
);
116 memcpy(&resp
->ending_fis
[0], d2h
, sizeof(struct dev_to_host_fis
));
118 ts
->buf_valid_size
= sizeof(*resp
);
120 EXPORT_SYMBOL_GPL(hisi_sas_sata_done
);
122 int hisi_sas_get_ncq_tag(struct sas_task
*task
, u32
*tag
)
124 struct ata_queued_cmd
*qc
= task
->uldd_task
;
127 if (qc
->tf
.command
== ATA_CMD_FPDMA_WRITE
||
128 qc
->tf
.command
== ATA_CMD_FPDMA_READ
) {
135 EXPORT_SYMBOL_GPL(hisi_sas_get_ncq_tag
);
137 static struct hisi_hba
*dev_to_hisi_hba(struct domain_device
*device
)
139 return device
->port
->ha
->lldd_ha
;
142 struct hisi_sas_port
*to_hisi_sas_port(struct asd_sas_port
*sas_port
)
144 return container_of(sas_port
, struct hisi_sas_port
, sas_port
);
146 EXPORT_SYMBOL_GPL(to_hisi_sas_port
);
148 void hisi_sas_stop_phys(struct hisi_hba
*hisi_hba
)
152 for (phy_no
= 0; phy_no
< hisi_hba
->n_phy
; phy_no
++)
153 hisi_hba
->hw
->phy_disable(hisi_hba
, phy_no
);
155 EXPORT_SYMBOL_GPL(hisi_sas_stop_phys
);
157 static void hisi_sas_slot_index_clear(struct hisi_hba
*hisi_hba
, int slot_idx
)
159 void *bitmap
= hisi_hba
->slot_index_tags
;
161 clear_bit(slot_idx
, bitmap
);
164 static void hisi_sas_slot_index_free(struct hisi_hba
*hisi_hba
, int slot_idx
)
166 hisi_sas_slot_index_clear(hisi_hba
, slot_idx
);
169 static void hisi_sas_slot_index_set(struct hisi_hba
*hisi_hba
, int slot_idx
)
171 void *bitmap
= hisi_hba
->slot_index_tags
;
173 set_bit(slot_idx
, bitmap
);
176 static int hisi_sas_slot_index_alloc(struct hisi_hba
*hisi_hba
, int *slot_idx
)
179 void *bitmap
= hisi_hba
->slot_index_tags
;
181 index
= find_first_zero_bit(bitmap
, hisi_hba
->slot_index_count
);
182 if (index
>= hisi_hba
->slot_index_count
)
183 return -SAS_QUEUE_FULL
;
184 hisi_sas_slot_index_set(hisi_hba
, index
);
189 static void hisi_sas_slot_index_init(struct hisi_hba
*hisi_hba
)
193 for (i
= 0; i
< hisi_hba
->slot_index_count
; ++i
)
194 hisi_sas_slot_index_clear(hisi_hba
, i
);
197 void hisi_sas_slot_task_free(struct hisi_hba
*hisi_hba
, struct sas_task
*task
,
198 struct hisi_sas_slot
*slot
)
202 struct device
*dev
= hisi_hba
->dev
;
204 if (!task
->lldd_task
)
207 task
->lldd_task
= NULL
;
209 if (!sas_protocol_ata(task
->task_proto
))
211 dma_unmap_sg(dev
, task
->scatter
,
217 dma_pool_free(hisi_hba
->buffer_pool
, slot
->buf
, slot
->buf_dma
);
219 list_del_init(&slot
->entry
);
223 hisi_sas_slot_index_free(hisi_hba
, slot
->idx
);
225 /* slot memory is fully zeroed when it is reused */
227 EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free
);
229 static int hisi_sas_task_prep_smp(struct hisi_hba
*hisi_hba
,
230 struct hisi_sas_slot
*slot
)
232 return hisi_hba
->hw
->prep_smp(hisi_hba
, slot
);
235 static int hisi_sas_task_prep_ssp(struct hisi_hba
*hisi_hba
,
236 struct hisi_sas_slot
*slot
, int is_tmf
,
237 struct hisi_sas_tmf_task
*tmf
)
239 return hisi_hba
->hw
->prep_ssp(hisi_hba
, slot
, is_tmf
, tmf
);
242 static int hisi_sas_task_prep_ata(struct hisi_hba
*hisi_hba
,
243 struct hisi_sas_slot
*slot
)
245 return hisi_hba
->hw
->prep_stp(hisi_hba
, slot
);
248 static int hisi_sas_task_prep_abort(struct hisi_hba
*hisi_hba
,
249 struct hisi_sas_slot
*slot
,
250 int device_id
, int abort_flag
, int tag_to_abort
)
252 return hisi_hba
->hw
->prep_abort(hisi_hba
, slot
,
253 device_id
, abort_flag
, tag_to_abort
);
257 * This function will issue an abort TMF regardless of whether the
258 * task is in the sdev or not. Then it will do the task complete
259 * cleanup and callbacks.
261 static void hisi_sas_slot_abort(struct work_struct
*work
)
263 struct hisi_sas_slot
*abort_slot
=
264 container_of(work
, struct hisi_sas_slot
, abort_slot
);
265 struct sas_task
*task
= abort_slot
->task
;
266 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(task
->dev
);
267 struct scsi_cmnd
*cmnd
= task
->uldd_task
;
268 struct hisi_sas_tmf_task tmf_task
;
270 struct device
*dev
= hisi_hba
->dev
;
271 int tag
= abort_slot
->idx
;
274 if (!(task
->task_proto
& SAS_PROTOCOL_SSP
)) {
275 dev_err(dev
, "cannot abort slot for non-ssp task\n");
279 int_to_scsilun(cmnd
->device
->lun
, &lun
);
280 tmf_task
.tmf
= TMF_ABORT_TASK
;
281 tmf_task
.tag_of_task_to_be_managed
= cpu_to_le16(tag
);
283 hisi_sas_debug_issue_ssp_tmf(task
->dev
, lun
.scsi_lun
, &tmf_task
);
285 /* Do cleanup for this task */
286 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
287 hisi_sas_slot_task_free(hisi_hba
, task
, abort_slot
);
288 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
290 task
->task_done(task
);
293 static int hisi_sas_task_prep(struct sas_task
*task
, struct hisi_sas_dq
294 *dq
, int is_tmf
, struct hisi_sas_tmf_task
*tmf
,
297 struct hisi_hba
*hisi_hba
= dq
->hisi_hba
;
298 struct domain_device
*device
= task
->dev
;
299 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
300 struct hisi_sas_port
*port
;
301 struct hisi_sas_slot
*slot
;
302 struct hisi_sas_cmd_hdr
*cmd_hdr_base
;
303 struct asd_sas_port
*sas_port
= device
->port
;
304 struct device
*dev
= hisi_hba
->dev
;
305 int dlvry_queue_slot
, dlvry_queue
, n_elem
= 0, rc
, slot_idx
;
309 struct task_status_struct
*ts
= &task
->task_status
;
311 ts
->resp
= SAS_TASK_UNDELIVERED
;
312 ts
->stat
= SAS_PHY_DOWN
;
314 * libsas will use dev->port, should
315 * not call task_done for sata
317 if (device
->dev_type
!= SAS_SATA_DEV
)
318 task
->task_done(task
);
322 if (DEV_IS_GONE(sas_dev
)) {
324 dev_info(dev
, "task prep: device %d not ready\n",
327 dev_info(dev
, "task prep: device %016llx not ready\n",
328 SAS_ADDR(device
->sas_addr
));
333 port
= to_hisi_sas_port(sas_port
);
334 if (port
&& !port
->port_attached
) {
335 dev_info(dev
, "task prep: %s port%d not attach device\n",
336 (dev_is_sata(device
)) ?
343 if (!sas_protocol_ata(task
->task_proto
)) {
344 if (task
->num_scatter
) {
345 n_elem
= dma_map_sg(dev
, task
->scatter
,
346 task
->num_scatter
, task
->data_dir
);
353 n_elem
= task
->num_scatter
;
355 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
356 if (hisi_hba
->hw
->slot_index_alloc
)
357 rc
= hisi_hba
->hw
->slot_index_alloc(hisi_hba
, &slot_idx
,
360 rc
= hisi_sas_slot_index_alloc(hisi_hba
, &slot_idx
);
362 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
365 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
367 rc
= hisi_hba
->hw
->get_free_slot(hisi_hba
, dq
);
371 dlvry_queue
= dq
->id
;
372 dlvry_queue_slot
= dq
->wr_point
;
373 slot
= &hisi_hba
->slot_info
[slot_idx
];
374 memset(slot
, 0, sizeof(struct hisi_sas_slot
));
376 slot
->idx
= slot_idx
;
377 slot
->n_elem
= n_elem
;
378 slot
->dlvry_queue
= dlvry_queue
;
379 slot
->dlvry_queue_slot
= dlvry_queue_slot
;
380 cmd_hdr_base
= hisi_hba
->cmd_hdr
[dlvry_queue
];
381 slot
->cmd_hdr
= &cmd_hdr_base
[dlvry_queue_slot
];
384 task
->lldd_task
= slot
;
385 INIT_WORK(&slot
->abort_slot
, hisi_sas_slot_abort
);
387 slot
->buf
= dma_pool_alloc(hisi_hba
->buffer_pool
,
388 GFP_ATOMIC
, &slot
->buf_dma
);
391 goto err_out_slot_buf
;
393 memset(slot
->cmd_hdr
, 0, sizeof(struct hisi_sas_cmd_hdr
));
394 memset(hisi_sas_cmd_hdr_addr_mem(slot
), 0, HISI_SAS_COMMAND_TABLE_SZ
);
395 memset(hisi_sas_status_buf_addr_mem(slot
), 0, HISI_SAS_STATUS_BUF_SZ
);
397 switch (task
->task_proto
) {
398 case SAS_PROTOCOL_SMP
:
399 rc
= hisi_sas_task_prep_smp(hisi_hba
, slot
);
401 case SAS_PROTOCOL_SSP
:
402 rc
= hisi_sas_task_prep_ssp(hisi_hba
, slot
, is_tmf
, tmf
);
404 case SAS_PROTOCOL_SATA
:
405 case SAS_PROTOCOL_STP
:
406 case SAS_PROTOCOL_SATA
| SAS_PROTOCOL_STP
:
407 rc
= hisi_sas_task_prep_ata(hisi_hba
, slot
);
410 dev_err(dev
, "task prep: unknown/unsupported proto (0x%x)\n",
417 dev_err(dev
, "task prep: rc = 0x%x\n", rc
);
421 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
422 list_add_tail(&slot
->entry
, &sas_dev
->list
);
423 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
424 spin_lock_irqsave(&task
->task_state_lock
, flags
);
425 task
->task_state_flags
|= SAS_TASK_AT_INITIATOR
;
426 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
428 dq
->slot_prep
= slot
;
434 dma_pool_free(hisi_hba
->buffer_pool
, slot
->buf
,
437 /* Nothing to be done */
439 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
440 hisi_sas_slot_index_free(hisi_hba
, slot_idx
);
441 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
443 dev_err(dev
, "task prep: failed[%d]!\n", rc
);
444 if (!sas_protocol_ata(task
->task_proto
))
446 dma_unmap_sg(dev
, task
->scatter
,
453 static int hisi_sas_task_exec(struct sas_task
*task
, gfp_t gfp_flags
,
454 int is_tmf
, struct hisi_sas_tmf_task
*tmf
)
459 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(task
->dev
);
460 struct device
*dev
= hisi_hba
->dev
;
461 struct domain_device
*device
= task
->dev
;
462 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
463 struct hisi_sas_dq
*dq
= sas_dev
->dq
;
465 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT
, &hisi_hba
->flags
)))
468 /* protect task_prep and start_delivery sequence */
469 spin_lock_irqsave(&dq
->lock
, flags
);
470 rc
= hisi_sas_task_prep(task
, dq
, is_tmf
, tmf
, &pass
);
472 dev_err(dev
, "task exec: failed[%d]!\n", rc
);
475 hisi_hba
->hw
->start_delivery(dq
);
476 spin_unlock_irqrestore(&dq
->lock
, flags
);
481 static void hisi_sas_bytes_dmaed(struct hisi_hba
*hisi_hba
, int phy_no
)
483 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
484 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
485 struct sas_ha_struct
*sas_ha
;
487 if (!phy
->phy_attached
)
490 sas_ha
= &hisi_hba
->sha
;
491 sas_ha
->notify_phy_event(sas_phy
, PHYE_OOB_DONE
);
494 struct sas_phy
*sphy
= sas_phy
->phy
;
496 sphy
->negotiated_linkrate
= sas_phy
->linkrate
;
497 sphy
->minimum_linkrate_hw
= SAS_LINK_RATE_1_5_GBPS
;
498 sphy
->maximum_linkrate_hw
=
499 hisi_hba
->hw
->phy_get_max_linkrate();
500 if (sphy
->minimum_linkrate
== SAS_LINK_RATE_UNKNOWN
)
501 sphy
->minimum_linkrate
= phy
->minimum_linkrate
;
503 if (sphy
->maximum_linkrate
== SAS_LINK_RATE_UNKNOWN
)
504 sphy
->maximum_linkrate
= phy
->maximum_linkrate
;
507 if (phy
->phy_type
& PORT_TYPE_SAS
) {
508 struct sas_identify_frame
*id
;
510 id
= (struct sas_identify_frame
*)phy
->frame_rcvd
;
511 id
->dev_type
= phy
->identify
.device_type
;
512 id
->initiator_bits
= SAS_PROTOCOL_ALL
;
513 id
->target_bits
= phy
->identify
.target_port_protocols
;
514 } else if (phy
->phy_type
& PORT_TYPE_SATA
) {
518 sas_phy
->frame_rcvd_size
= phy
->frame_rcvd_size
;
519 sas_ha
->notify_port_event(sas_phy
, PORTE_BYTES_DMAED
);
522 static struct hisi_sas_device
*hisi_sas_alloc_dev(struct domain_device
*device
)
524 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
525 struct hisi_sas_device
*sas_dev
= NULL
;
529 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
530 for (i
= 0; i
< HISI_SAS_MAX_DEVICES
; i
++) {
531 if (hisi_hba
->devices
[i
].dev_type
== SAS_PHY_UNUSED
) {
532 int queue
= i
% hisi_hba
->queue_count
;
533 struct hisi_sas_dq
*dq
= &hisi_hba
->dq
[queue
];
535 hisi_hba
->devices
[i
].device_id
= i
;
536 sas_dev
= &hisi_hba
->devices
[i
];
537 sas_dev
->dev_status
= HISI_SAS_DEV_NORMAL
;
538 sas_dev
->dev_type
= device
->dev_type
;
539 sas_dev
->hisi_hba
= hisi_hba
;
540 sas_dev
->sas_device
= device
;
542 INIT_LIST_HEAD(&hisi_hba
->devices
[i
].list
);
546 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
551 static int hisi_sas_dev_found(struct domain_device
*device
)
553 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
554 struct domain_device
*parent_dev
= device
->parent
;
555 struct hisi_sas_device
*sas_dev
;
556 struct device
*dev
= hisi_hba
->dev
;
558 if (hisi_hba
->hw
->alloc_dev
)
559 sas_dev
= hisi_hba
->hw
->alloc_dev(device
);
561 sas_dev
= hisi_sas_alloc_dev(device
);
563 dev_err(dev
, "fail alloc dev: max support %d devices\n",
564 HISI_SAS_MAX_DEVICES
);
568 device
->lldd_dev
= sas_dev
;
569 hisi_hba
->hw
->setup_itct(hisi_hba
, sas_dev
);
571 if (parent_dev
&& DEV_IS_EXPANDER(parent_dev
->dev_type
)) {
573 u8 phy_num
= parent_dev
->ex_dev
.num_phys
;
576 for (phy_no
= 0; phy_no
< phy_num
; phy_no
++) {
577 phy
= &parent_dev
->ex_dev
.ex_phy
[phy_no
];
578 if (SAS_ADDR(phy
->attached_sas_addr
) ==
579 SAS_ADDR(device
->sas_addr
)) {
580 sas_dev
->attached_phy
= phy_no
;
585 if (phy_no
== phy_num
) {
586 dev_info(dev
, "dev found: no attached "
587 "dev:%016llx at ex:%016llx\n",
588 SAS_ADDR(device
->sas_addr
),
589 SAS_ADDR(parent_dev
->sas_addr
));
594 dev_info(dev
, "dev[%d:%x] found\n",
595 sas_dev
->device_id
, sas_dev
->dev_type
);
600 static int hisi_sas_slave_configure(struct scsi_device
*sdev
)
602 struct domain_device
*dev
= sdev_to_domain_dev(sdev
);
603 int ret
= sas_slave_configure(sdev
);
607 if (!dev_is_sata(dev
))
608 sas_change_queue_depth(sdev
, 64);
613 static void hisi_sas_scan_start(struct Scsi_Host
*shost
)
615 struct hisi_hba
*hisi_hba
= shost_priv(shost
);
617 hisi_hba
->hw
->phys_init(hisi_hba
);
620 static int hisi_sas_scan_finished(struct Scsi_Host
*shost
, unsigned long time
)
622 struct hisi_hba
*hisi_hba
= shost_priv(shost
);
623 struct sas_ha_struct
*sha
= &hisi_hba
->sha
;
625 /* Wait for PHY up interrupt to occur */
633 static void hisi_sas_phyup_work(struct work_struct
*work
)
635 struct hisi_sas_phy
*phy
=
636 container_of(work
, typeof(*phy
), works
[HISI_PHYE_PHY_UP
]);
637 struct hisi_hba
*hisi_hba
= phy
->hisi_hba
;
638 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
639 int phy_no
= sas_phy
->id
;
641 hisi_hba
->hw
->sl_notify(hisi_hba
, phy_no
); /* This requires a sleep */
642 hisi_sas_bytes_dmaed(hisi_hba
, phy_no
);
645 static void hisi_sas_linkreset_work(struct work_struct
*work
)
647 struct hisi_sas_phy
*phy
=
648 container_of(work
, typeof(*phy
), works
[HISI_PHYE_LINK_RESET
]);
649 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
651 hisi_sas_control_phy(sas_phy
, PHY_FUNC_LINK_RESET
, NULL
);
654 static const work_func_t hisi_sas_phye_fns
[HISI_PHYES_NUM
] = {
655 [HISI_PHYE_PHY_UP
] = hisi_sas_phyup_work
,
656 [HISI_PHYE_LINK_RESET
] = hisi_sas_linkreset_work
,
659 bool hisi_sas_notify_phy_event(struct hisi_sas_phy
*phy
,
660 enum hisi_sas_phy_event event
)
662 struct hisi_hba
*hisi_hba
= phy
->hisi_hba
;
664 if (WARN_ON(event
>= HISI_PHYES_NUM
))
667 return queue_work(hisi_hba
->wq
, &phy
->works
[event
]);
669 EXPORT_SYMBOL_GPL(hisi_sas_notify_phy_event
);
671 static void hisi_sas_phy_init(struct hisi_hba
*hisi_hba
, int phy_no
)
673 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
674 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
677 phy
->hisi_hba
= hisi_hba
;
679 phy
->minimum_linkrate
= SAS_LINK_RATE_1_5_GBPS
;
680 phy
->maximum_linkrate
= hisi_hba
->hw
->phy_get_max_linkrate();
681 sas_phy
->enabled
= (phy_no
< hisi_hba
->n_phy
) ? 1 : 0;
682 sas_phy
->class = SAS
;
683 sas_phy
->iproto
= SAS_PROTOCOL_ALL
;
685 sas_phy
->type
= PHY_TYPE_PHYSICAL
;
686 sas_phy
->role
= PHY_ROLE_INITIATOR
;
687 sas_phy
->oob_mode
= OOB_NOT_CONNECTED
;
688 sas_phy
->linkrate
= SAS_LINK_RATE_UNKNOWN
;
689 sas_phy
->id
= phy_no
;
690 sas_phy
->sas_addr
= &hisi_hba
->sas_addr
[0];
691 sas_phy
->frame_rcvd
= &phy
->frame_rcvd
[0];
692 sas_phy
->ha
= (struct sas_ha_struct
*)hisi_hba
->shost
->hostdata
;
693 sas_phy
->lldd_phy
= phy
;
695 for (i
= 0; i
< HISI_PHYES_NUM
; i
++)
696 INIT_WORK(&phy
->works
[i
], hisi_sas_phye_fns
[i
]);
699 static void hisi_sas_port_notify_formed(struct asd_sas_phy
*sas_phy
)
701 struct sas_ha_struct
*sas_ha
= sas_phy
->ha
;
702 struct hisi_hba
*hisi_hba
= sas_ha
->lldd_ha
;
703 struct hisi_sas_phy
*phy
= sas_phy
->lldd_phy
;
704 struct asd_sas_port
*sas_port
= sas_phy
->port
;
705 struct hisi_sas_port
*port
= to_hisi_sas_port(sas_port
);
711 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
712 port
->port_attached
= 1;
713 port
->id
= phy
->port_id
;
715 sas_port
->lldd_port
= port
;
716 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
719 static void hisi_sas_do_release_task(struct hisi_hba
*hisi_hba
, struct sas_task
*task
,
720 struct hisi_sas_slot
*slot
)
724 struct task_status_struct
*ts
;
726 ts
= &task
->task_status
;
728 ts
->resp
= SAS_TASK_COMPLETE
;
729 ts
->stat
= SAS_ABORTED_TASK
;
730 spin_lock_irqsave(&task
->task_state_lock
, flags
);
731 task
->task_state_flags
&=
732 ~(SAS_TASK_STATE_PENDING
| SAS_TASK_AT_INITIATOR
);
733 task
->task_state_flags
|= SAS_TASK_STATE_DONE
;
734 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
737 hisi_sas_slot_task_free(hisi_hba
, task
, slot
);
740 /* hisi_hba.lock should be locked */
741 static void hisi_sas_release_task(struct hisi_hba
*hisi_hba
,
742 struct domain_device
*device
)
744 struct hisi_sas_slot
*slot
, *slot2
;
745 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
747 list_for_each_entry_safe(slot
, slot2
, &sas_dev
->list
, entry
)
748 hisi_sas_do_release_task(hisi_hba
, slot
->task
, slot
);
751 void hisi_sas_release_tasks(struct hisi_hba
*hisi_hba
)
753 struct hisi_sas_device
*sas_dev
;
754 struct domain_device
*device
;
757 for (i
= 0; i
< HISI_SAS_MAX_DEVICES
; i
++) {
758 sas_dev
= &hisi_hba
->devices
[i
];
759 device
= sas_dev
->sas_device
;
761 if ((sas_dev
->dev_type
== SAS_PHY_UNUSED
) ||
765 hisi_sas_release_task(hisi_hba
, device
);
768 EXPORT_SYMBOL_GPL(hisi_sas_release_tasks
);
770 static void hisi_sas_dereg_device(struct hisi_hba
*hisi_hba
,
771 struct domain_device
*device
)
773 if (hisi_hba
->hw
->dereg_device
)
774 hisi_hba
->hw
->dereg_device(hisi_hba
, device
);
777 static void hisi_sas_dev_gone(struct domain_device
*device
)
779 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
780 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
781 struct device
*dev
= hisi_hba
->dev
;
783 dev_info(dev
, "dev[%d:%x] is gone\n",
784 sas_dev
->device_id
, sas_dev
->dev_type
);
786 if (!test_bit(HISI_SAS_RESET_BIT
, &hisi_hba
->flags
)) {
787 hisi_sas_internal_task_abort(hisi_hba
, device
,
788 HISI_SAS_INT_ABT_DEV
, 0);
790 hisi_sas_dereg_device(hisi_hba
, device
);
792 hisi_hba
->hw
->clear_itct(hisi_hba
, sas_dev
);
793 device
->lldd_dev
= NULL
;
796 if (hisi_hba
->hw
->free_device
)
797 hisi_hba
->hw
->free_device(sas_dev
);
798 sas_dev
->dev_type
= SAS_PHY_UNUSED
;
801 static int hisi_sas_queue_command(struct sas_task
*task
, gfp_t gfp_flags
)
803 return hisi_sas_task_exec(task
, gfp_flags
, 0, NULL
);
806 static int hisi_sas_control_phy(struct asd_sas_phy
*sas_phy
, enum phy_func func
,
809 struct sas_ha_struct
*sas_ha
= sas_phy
->ha
;
810 struct hisi_hba
*hisi_hba
= sas_ha
->lldd_ha
;
811 int phy_no
= sas_phy
->id
;
814 case PHY_FUNC_HARD_RESET
:
815 hisi_hba
->hw
->phy_hard_reset(hisi_hba
, phy_no
);
818 case PHY_FUNC_LINK_RESET
:
819 hisi_hba
->hw
->phy_disable(hisi_hba
, phy_no
);
821 hisi_hba
->hw
->phy_start(hisi_hba
, phy_no
);
824 case PHY_FUNC_DISABLE
:
825 hisi_hba
->hw
->phy_disable(hisi_hba
, phy_no
);
828 case PHY_FUNC_SET_LINK_RATE
:
829 hisi_hba
->hw
->phy_set_linkrate(hisi_hba
, phy_no
, funcdata
);
831 case PHY_FUNC_GET_EVENTS
:
832 if (hisi_hba
->hw
->get_events
) {
833 hisi_hba
->hw
->get_events(hisi_hba
, phy_no
);
837 case PHY_FUNC_RELEASE_SPINUP_HOLD
:
844 static void hisi_sas_task_done(struct sas_task
*task
)
846 if (!del_timer(&task
->slow_task
->timer
))
848 complete(&task
->slow_task
->completion
);
851 static void hisi_sas_tmf_timedout(struct timer_list
*t
)
853 struct sas_task_slow
*slow
= from_timer(slow
, t
, timer
);
854 struct sas_task
*task
= slow
->task
;
857 spin_lock_irqsave(&task
->task_state_lock
, flags
);
858 if (!(task
->task_state_flags
& SAS_TASK_STATE_DONE
))
859 task
->task_state_flags
|= SAS_TASK_STATE_ABORTED
;
860 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
862 complete(&task
->slow_task
->completion
);
865 #define TASK_TIMEOUT 20
867 #define INTERNAL_ABORT_TIMEOUT 6
868 static int hisi_sas_exec_internal_tmf_task(struct domain_device
*device
,
869 void *parameter
, u32 para_len
,
870 struct hisi_sas_tmf_task
*tmf
)
872 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
873 struct hisi_hba
*hisi_hba
= sas_dev
->hisi_hba
;
874 struct device
*dev
= hisi_hba
->dev
;
875 struct sas_task
*task
;
878 for (retry
= 0; retry
< TASK_RETRY
; retry
++) {
879 task
= sas_alloc_slow_task(GFP_KERNEL
);
884 task
->task_proto
= device
->tproto
;
886 if (dev_is_sata(device
)) {
887 task
->ata_task
.device_control_reg_update
= 1;
888 memcpy(&task
->ata_task
.fis
, parameter
, para_len
);
890 memcpy(&task
->ssp_task
, parameter
, para_len
);
892 task
->task_done
= hisi_sas_task_done
;
894 task
->slow_task
->timer
.function
= hisi_sas_tmf_timedout
;
895 task
->slow_task
->timer
.expires
= jiffies
+ TASK_TIMEOUT
*HZ
;
896 add_timer(&task
->slow_task
->timer
);
898 res
= hisi_sas_task_exec(task
, GFP_KERNEL
, 1, tmf
);
901 del_timer(&task
->slow_task
->timer
);
902 dev_err(dev
, "abort tmf: executing internal task failed: %d\n",
907 wait_for_completion(&task
->slow_task
->completion
);
908 res
= TMF_RESP_FUNC_FAILED
;
909 /* Even TMF timed out, return direct. */
910 if ((task
->task_state_flags
& SAS_TASK_STATE_ABORTED
)) {
911 if (!(task
->task_state_flags
& SAS_TASK_STATE_DONE
)) {
912 struct hisi_sas_slot
*slot
= task
->lldd_task
;
914 dev_err(dev
, "abort tmf: TMF task timeout and not done\n");
920 dev_err(dev
, "abort tmf: TMF task timeout\n");
923 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
924 task
->task_status
.stat
== TMF_RESP_FUNC_COMPLETE
) {
925 res
= TMF_RESP_FUNC_COMPLETE
;
929 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
930 task
->task_status
.stat
== TMF_RESP_FUNC_SUCC
) {
931 res
= TMF_RESP_FUNC_SUCC
;
935 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
936 task
->task_status
.stat
== SAS_DATA_UNDERRUN
) {
937 /* no error, but return the number of bytes of
940 dev_warn(dev
, "abort tmf: task to dev %016llx "
941 "resp: 0x%x sts 0x%x underrun\n",
942 SAS_ADDR(device
->sas_addr
),
943 task
->task_status
.resp
,
944 task
->task_status
.stat
);
945 res
= task
->task_status
.residual
;
949 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
950 task
->task_status
.stat
== SAS_DATA_OVERRUN
) {
951 dev_warn(dev
, "abort tmf: blocked task error\n");
956 dev_warn(dev
, "abort tmf: task to dev "
957 "%016llx resp: 0x%x status 0x%x\n",
958 SAS_ADDR(device
->sas_addr
), task
->task_status
.resp
,
959 task
->task_status
.stat
);
964 if (retry
== TASK_RETRY
)
965 dev_warn(dev
, "abort tmf: executing internal task failed!\n");
970 static void hisi_sas_fill_ata_reset_cmd(struct ata_device
*dev
,
971 bool reset
, int pmp
, u8
*fis
)
973 struct ata_taskfile tf
;
975 ata_tf_init(dev
, &tf
);
980 tf
.command
= ATA_CMD_DEV_RESET
;
981 ata_tf_to_fis(&tf
, pmp
, 0, fis
);
984 static int hisi_sas_softreset_ata_disk(struct domain_device
*device
)
987 struct ata_port
*ap
= device
->sata_dev
.ap
;
988 struct ata_link
*link
;
989 int rc
= TMF_RESP_FUNC_FAILED
;
990 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
991 struct device
*dev
= hisi_hba
->dev
;
992 int s
= sizeof(struct host_to_dev_fis
);
995 ata_for_each_link(link
, ap
, EDGE
) {
996 int pmp
= sata_srst_pmp(link
);
998 hisi_sas_fill_ata_reset_cmd(link
->device
, 1, pmp
, fis
);
999 rc
= hisi_sas_exec_internal_tmf_task(device
, fis
, s
, NULL
);
1000 if (rc
!= TMF_RESP_FUNC_COMPLETE
)
1004 if (rc
== TMF_RESP_FUNC_COMPLETE
) {
1005 ata_for_each_link(link
, ap
, EDGE
) {
1006 int pmp
= sata_srst_pmp(link
);
1008 hisi_sas_fill_ata_reset_cmd(link
->device
, 0, pmp
, fis
);
1009 rc
= hisi_sas_exec_internal_tmf_task(device
, fis
,
1011 if (rc
!= TMF_RESP_FUNC_COMPLETE
)
1012 dev_err(dev
, "ata disk de-reset failed\n");
1015 dev_err(dev
, "ata disk reset failed\n");
1018 if (rc
== TMF_RESP_FUNC_COMPLETE
) {
1019 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1020 hisi_sas_release_task(hisi_hba
, device
);
1021 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1027 static int hisi_sas_debug_issue_ssp_tmf(struct domain_device
*device
,
1028 u8
*lun
, struct hisi_sas_tmf_task
*tmf
)
1030 struct sas_ssp_task ssp_task
;
1032 if (!(device
->tproto
& SAS_PROTOCOL_SSP
))
1033 return TMF_RESP_FUNC_ESUPP
;
1035 memcpy(ssp_task
.LUN
, lun
, 8);
1037 return hisi_sas_exec_internal_tmf_task(device
, &ssp_task
,
1038 sizeof(ssp_task
), tmf
);
1041 static void hisi_sas_refresh_port_id(struct hisi_hba
*hisi_hba
)
1043 u32 state
= hisi_hba
->hw
->get_phys_state(hisi_hba
);
1046 for (i
= 0; i
< HISI_SAS_MAX_DEVICES
; i
++) {
1047 struct hisi_sas_device
*sas_dev
= &hisi_hba
->devices
[i
];
1048 struct domain_device
*device
= sas_dev
->sas_device
;
1049 struct asd_sas_port
*sas_port
;
1050 struct hisi_sas_port
*port
;
1051 struct hisi_sas_phy
*phy
= NULL
;
1052 struct asd_sas_phy
*sas_phy
;
1054 if ((sas_dev
->dev_type
== SAS_PHY_UNUSED
)
1055 || !device
|| !device
->port
)
1058 sas_port
= device
->port
;
1059 port
= to_hisi_sas_port(sas_port
);
1061 list_for_each_entry(sas_phy
, &sas_port
->phy_list
, port_phy_el
)
1062 if (state
& BIT(sas_phy
->id
)) {
1063 phy
= sas_phy
->lldd_phy
;
1068 port
->id
= phy
->port_id
;
1070 /* Update linkrate of directly attached device. */
1071 if (!device
->parent
)
1072 device
->linkrate
= phy
->sas_phy
.linkrate
;
1074 hisi_hba
->hw
->setup_itct(hisi_hba
, sas_dev
);
1080 static void hisi_sas_rescan_topology(struct hisi_hba
*hisi_hba
, u32 old_state
,
1083 struct sas_ha_struct
*sas_ha
= &hisi_hba
->sha
;
1084 struct asd_sas_port
*_sas_port
= NULL
;
1087 for (phy_no
= 0; phy_no
< hisi_hba
->n_phy
; phy_no
++) {
1088 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
1089 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
1090 struct asd_sas_port
*sas_port
= sas_phy
->port
;
1091 bool do_port_check
= !!(_sas_port
!= sas_port
);
1093 if (!sas_phy
->phy
->enabled
)
1096 /* Report PHY state change to libsas */
1097 if (state
& BIT(phy_no
)) {
1098 if (do_port_check
&& sas_port
&& sas_port
->port_dev
) {
1099 struct domain_device
*dev
= sas_port
->port_dev
;
1101 _sas_port
= sas_port
;
1103 if (DEV_IS_EXPANDER(dev
->dev_type
))
1104 sas_ha
->notify_port_event(sas_phy
,
1105 PORTE_BROADCAST_RCVD
);
1107 } else if (old_state
& (1 << phy_no
))
1108 /* PHY down but was up before */
1109 hisi_sas_phy_down(hisi_hba
, phy_no
, 0);
1114 static int hisi_sas_controller_reset(struct hisi_hba
*hisi_hba
)
1116 struct device
*dev
= hisi_hba
->dev
;
1117 struct Scsi_Host
*shost
= hisi_hba
->shost
;
1118 u32 old_state
, state
;
1119 unsigned long flags
;
1122 if (!hisi_hba
->hw
->soft_reset
)
1125 if (test_and_set_bit(HISI_SAS_RESET_BIT
, &hisi_hba
->flags
))
1128 dev_info(dev
, "controller resetting...\n");
1129 old_state
= hisi_hba
->hw
->get_phys_state(hisi_hba
);
1131 scsi_block_requests(shost
);
1132 set_bit(HISI_SAS_REJECT_CMD_BIT
, &hisi_hba
->flags
);
1133 rc
= hisi_hba
->hw
->soft_reset(hisi_hba
);
1135 dev_warn(dev
, "controller reset failed (%d)\n", rc
);
1136 clear_bit(HISI_SAS_REJECT_CMD_BIT
, &hisi_hba
->flags
);
1137 scsi_unblock_requests(shost
);
1140 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1141 hisi_sas_release_tasks(hisi_hba
);
1142 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1144 clear_bit(HISI_SAS_REJECT_CMD_BIT
, &hisi_hba
->flags
);
1146 /* Init and wait for PHYs to come up and all libsas event finished. */
1147 hisi_hba
->hw
->phys_init(hisi_hba
);
1149 hisi_sas_refresh_port_id(hisi_hba
);
1150 scsi_unblock_requests(shost
);
1152 state
= hisi_hba
->hw
->get_phys_state(hisi_hba
);
1153 hisi_sas_rescan_topology(hisi_hba
, old_state
, state
);
1154 dev_info(dev
, "controller reset complete\n");
1157 clear_bit(HISI_SAS_RESET_BIT
, &hisi_hba
->flags
);
1162 static int hisi_sas_abort_task(struct sas_task
*task
)
1164 struct scsi_lun lun
;
1165 struct hisi_sas_tmf_task tmf_task
;
1166 struct domain_device
*device
= task
->dev
;
1167 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
1168 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(task
->dev
);
1169 struct device
*dev
= hisi_hba
->dev
;
1170 int rc
= TMF_RESP_FUNC_FAILED
;
1171 unsigned long flags
;
1174 dev_warn(dev
, "Device has been removed\n");
1175 return TMF_RESP_FUNC_FAILED
;
1178 if (task
->task_state_flags
& SAS_TASK_STATE_DONE
) {
1179 rc
= TMF_RESP_FUNC_COMPLETE
;
1183 sas_dev
->dev_status
= HISI_SAS_DEV_EH
;
1184 if (task
->lldd_task
&& task
->task_proto
& SAS_PROTOCOL_SSP
) {
1185 struct scsi_cmnd
*cmnd
= task
->uldd_task
;
1186 struct hisi_sas_slot
*slot
= task
->lldd_task
;
1187 u32 tag
= slot
->idx
;
1190 int_to_scsilun(cmnd
->device
->lun
, &lun
);
1191 tmf_task
.tmf
= TMF_ABORT_TASK
;
1192 tmf_task
.tag_of_task_to_be_managed
= cpu_to_le16(tag
);
1194 rc
= hisi_sas_debug_issue_ssp_tmf(task
->dev
, lun
.scsi_lun
,
1197 rc2
= hisi_sas_internal_task_abort(hisi_hba
, device
,
1198 HISI_SAS_INT_ABT_CMD
, tag
);
1200 dev_err(dev
, "abort task: internal abort (%d)\n", rc2
);
1201 return TMF_RESP_FUNC_FAILED
;
1205 * If the TMF finds that the IO is not in the device and also
1206 * the internal abort does not succeed, then it is safe to
1208 * Note: if the internal abort succeeds then the slot
1209 * will have already been completed
1211 if (rc
== TMF_RESP_FUNC_COMPLETE
&& rc2
!= TMF_RESP_FUNC_SUCC
) {
1212 if (task
->lldd_task
) {
1213 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1214 hisi_sas_do_release_task(hisi_hba
, task
, slot
);
1215 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1218 } else if (task
->task_proto
& SAS_PROTOCOL_SATA
||
1219 task
->task_proto
& SAS_PROTOCOL_STP
) {
1220 if (task
->dev
->dev_type
== SAS_SATA_DEV
) {
1221 rc
= hisi_sas_internal_task_abort(hisi_hba
, device
,
1222 HISI_SAS_INT_ABT_DEV
, 0);
1224 dev_err(dev
, "abort task: internal abort failed\n");
1227 hisi_sas_dereg_device(hisi_hba
, device
);
1228 rc
= hisi_sas_softreset_ata_disk(device
);
1230 } else if (task
->lldd_task
&& task
->task_proto
& SAS_PROTOCOL_SMP
) {
1232 struct hisi_sas_slot
*slot
= task
->lldd_task
;
1233 u32 tag
= slot
->idx
;
1235 rc
= hisi_sas_internal_task_abort(hisi_hba
, device
,
1236 HISI_SAS_INT_ABT_CMD
, tag
);
1237 if (((rc
< 0) || (rc
== TMF_RESP_FUNC_FAILED
)) &&
1239 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1240 hisi_sas_do_release_task(hisi_hba
, task
, slot
);
1241 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1246 if (rc
!= TMF_RESP_FUNC_COMPLETE
)
1247 dev_notice(dev
, "abort task: rc=%d\n", rc
);
1251 static int hisi_sas_abort_task_set(struct domain_device
*device
, u8
*lun
)
1253 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
1254 struct device
*dev
= hisi_hba
->dev
;
1255 struct hisi_sas_tmf_task tmf_task
;
1256 int rc
= TMF_RESP_FUNC_FAILED
;
1257 unsigned long flags
;
1259 rc
= hisi_sas_internal_task_abort(hisi_hba
, device
,
1260 HISI_SAS_INT_ABT_DEV
, 0);
1262 dev_err(dev
, "abort task set: internal abort rc=%d\n", rc
);
1263 return TMF_RESP_FUNC_FAILED
;
1265 hisi_sas_dereg_device(hisi_hba
, device
);
1267 tmf_task
.tmf
= TMF_ABORT_TASK_SET
;
1268 rc
= hisi_sas_debug_issue_ssp_tmf(device
, lun
, &tmf_task
);
1270 if (rc
== TMF_RESP_FUNC_COMPLETE
) {
1271 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1272 hisi_sas_release_task(hisi_hba
, device
);
1273 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1279 static int hisi_sas_clear_aca(struct domain_device
*device
, u8
*lun
)
1281 int rc
= TMF_RESP_FUNC_FAILED
;
1282 struct hisi_sas_tmf_task tmf_task
;
1284 tmf_task
.tmf
= TMF_CLEAR_ACA
;
1285 rc
= hisi_sas_debug_issue_ssp_tmf(device
, lun
, &tmf_task
);
1290 static int hisi_sas_debug_I_T_nexus_reset(struct domain_device
*device
)
1292 struct sas_phy
*phy
= sas_get_local_phy(device
);
1293 int rc
, reset_type
= (device
->dev_type
== SAS_SATA_DEV
||
1294 (device
->tproto
& SAS_PROTOCOL_STP
)) ? 0 : 1;
1295 rc
= sas_phy_reset(phy
, reset_type
);
1296 sas_put_local_phy(phy
);
1301 static int hisi_sas_I_T_nexus_reset(struct domain_device
*device
)
1303 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
1304 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
1305 struct device
*dev
= hisi_hba
->dev
;
1306 int rc
= TMF_RESP_FUNC_FAILED
;
1307 unsigned long flags
;
1309 if (sas_dev
->dev_status
!= HISI_SAS_DEV_EH
)
1310 return TMF_RESP_FUNC_FAILED
;
1311 sas_dev
->dev_status
= HISI_SAS_DEV_NORMAL
;
1313 rc
= hisi_sas_internal_task_abort(hisi_hba
, device
,
1314 HISI_SAS_INT_ABT_DEV
, 0);
1316 dev_err(dev
, "I_T nexus reset: internal abort (%d)\n", rc
);
1317 return TMF_RESP_FUNC_FAILED
;
1319 hisi_sas_dereg_device(hisi_hba
, device
);
1321 rc
= hisi_sas_debug_I_T_nexus_reset(device
);
1323 if ((rc
== TMF_RESP_FUNC_COMPLETE
) || (rc
== -ENODEV
)) {
1324 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1325 hisi_sas_release_task(hisi_hba
, device
);
1326 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1331 static int hisi_sas_lu_reset(struct domain_device
*device
, u8
*lun
)
1333 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
1334 struct hisi_hba
*hisi_hba
= dev_to_hisi_hba(device
);
1335 struct device
*dev
= hisi_hba
->dev
;
1336 unsigned long flags
;
1337 int rc
= TMF_RESP_FUNC_FAILED
;
1339 sas_dev
->dev_status
= HISI_SAS_DEV_EH
;
1340 if (dev_is_sata(device
)) {
1341 struct sas_phy
*phy
;
1343 /* Clear internal IO and then hardreset */
1344 rc
= hisi_sas_internal_task_abort(hisi_hba
, device
,
1345 HISI_SAS_INT_ABT_DEV
, 0);
1347 dev_err(dev
, "lu_reset: internal abort failed\n");
1350 hisi_sas_dereg_device(hisi_hba
, device
);
1352 phy
= sas_get_local_phy(device
);
1354 rc
= sas_phy_reset(phy
, 1);
1357 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1358 hisi_sas_release_task(hisi_hba
, device
);
1359 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1361 sas_put_local_phy(phy
);
1363 struct hisi_sas_tmf_task tmf_task
= { .tmf
= TMF_LU_RESET
};
1365 rc
= hisi_sas_internal_task_abort(hisi_hba
, device
,
1366 HISI_SAS_INT_ABT_DEV
, 0);
1368 dev_err(dev
, "lu_reset: internal abort failed\n");
1371 hisi_sas_dereg_device(hisi_hba
, device
);
1373 rc
= hisi_sas_debug_issue_ssp_tmf(device
, lun
, &tmf_task
);
1374 if (rc
== TMF_RESP_FUNC_COMPLETE
) {
1375 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1376 hisi_sas_release_task(hisi_hba
, device
);
1377 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1381 if (rc
!= TMF_RESP_FUNC_COMPLETE
)
1382 dev_err(dev
, "lu_reset: for device[%d]:rc= %d\n",
1383 sas_dev
->device_id
, rc
);
1387 static int hisi_sas_clear_nexus_ha(struct sas_ha_struct
*sas_ha
)
1389 struct hisi_hba
*hisi_hba
= sas_ha
->lldd_ha
;
1390 HISI_SAS_DECLARE_RST_WORK_ON_STACK(r
);
1392 queue_work(hisi_hba
->wq
, &r
.work
);
1393 wait_for_completion(r
.completion
);
1395 return TMF_RESP_FUNC_COMPLETE
;
1397 return TMF_RESP_FUNC_FAILED
;
1400 static int hisi_sas_query_task(struct sas_task
*task
)
1402 struct scsi_lun lun
;
1403 struct hisi_sas_tmf_task tmf_task
;
1404 int rc
= TMF_RESP_FUNC_FAILED
;
1406 if (task
->lldd_task
&& task
->task_proto
& SAS_PROTOCOL_SSP
) {
1407 struct scsi_cmnd
*cmnd
= task
->uldd_task
;
1408 struct domain_device
*device
= task
->dev
;
1409 struct hisi_sas_slot
*slot
= task
->lldd_task
;
1410 u32 tag
= slot
->idx
;
1412 int_to_scsilun(cmnd
->device
->lun
, &lun
);
1413 tmf_task
.tmf
= TMF_QUERY_TASK
;
1414 tmf_task
.tag_of_task_to_be_managed
= cpu_to_le16(tag
);
1416 rc
= hisi_sas_debug_issue_ssp_tmf(device
,
1420 /* The task is still in Lun, release it then */
1421 case TMF_RESP_FUNC_SUCC
:
1422 /* The task is not in Lun or failed, reset the phy */
1423 case TMF_RESP_FUNC_FAILED
:
1424 case TMF_RESP_FUNC_COMPLETE
:
1427 rc
= TMF_RESP_FUNC_FAILED
;
1435 hisi_sas_internal_abort_task_exec(struct hisi_hba
*hisi_hba
, int device_id
,
1436 struct sas_task
*task
, int abort_flag
,
1439 struct domain_device
*device
= task
->dev
;
1440 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
1441 struct device
*dev
= hisi_hba
->dev
;
1442 struct hisi_sas_port
*port
;
1443 struct hisi_sas_slot
*slot
;
1444 struct asd_sas_port
*sas_port
= device
->port
;
1445 struct hisi_sas_cmd_hdr
*cmd_hdr_base
;
1446 struct hisi_sas_dq
*dq
= sas_dev
->dq
;
1447 int dlvry_queue_slot
, dlvry_queue
, n_elem
= 0, rc
, slot_idx
;
1448 unsigned long flags
, flags_dq
;
1450 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT
, &hisi_hba
->flags
)))
1456 port
= to_hisi_sas_port(sas_port
);
1458 /* simply get a slot and send abort command */
1459 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1460 rc
= hisi_sas_slot_index_alloc(hisi_hba
, &slot_idx
);
1462 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1465 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1467 spin_lock_irqsave(&dq
->lock
, flags_dq
);
1468 rc
= hisi_hba
->hw
->get_free_slot(hisi_hba
, dq
);
1472 dlvry_queue
= dq
->id
;
1473 dlvry_queue_slot
= dq
->wr_point
;
1475 slot
= &hisi_hba
->slot_info
[slot_idx
];
1476 memset(slot
, 0, sizeof(struct hisi_sas_slot
));
1478 slot
->idx
= slot_idx
;
1479 slot
->n_elem
= n_elem
;
1480 slot
->dlvry_queue
= dlvry_queue
;
1481 slot
->dlvry_queue_slot
= dlvry_queue_slot
;
1482 cmd_hdr_base
= hisi_hba
->cmd_hdr
[dlvry_queue
];
1483 slot
->cmd_hdr
= &cmd_hdr_base
[dlvry_queue_slot
];
1486 task
->lldd_task
= slot
;
1488 slot
->buf
= dma_pool_alloc(hisi_hba
->buffer_pool
,
1489 GFP_ATOMIC
, &slot
->buf_dma
);
1495 memset(slot
->cmd_hdr
, 0, sizeof(struct hisi_sas_cmd_hdr
));
1496 memset(hisi_sas_cmd_hdr_addr_mem(slot
), 0, HISI_SAS_COMMAND_TABLE_SZ
);
1497 memset(hisi_sas_status_buf_addr_mem(slot
), 0, HISI_SAS_STATUS_BUF_SZ
);
1499 rc
= hisi_sas_task_prep_abort(hisi_hba
, slot
, device_id
,
1500 abort_flag
, task_tag
);
1504 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1505 list_add_tail(&slot
->entry
, &sas_dev
->list
);
1506 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1507 spin_lock_irqsave(&task
->task_state_lock
, flags
);
1508 task
->task_state_flags
|= SAS_TASK_AT_INITIATOR
;
1509 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
1511 dq
->slot_prep
= slot
;
1513 /* send abort command to the chip */
1514 hisi_hba
->hw
->start_delivery(dq
);
1515 spin_unlock_irqrestore(&dq
->lock
, flags_dq
);
1520 dma_pool_free(hisi_hba
->buffer_pool
, slot
->buf
,
1523 spin_lock_irqsave(&hisi_hba
->lock
, flags
);
1524 hisi_sas_slot_index_free(hisi_hba
, slot_idx
);
1525 spin_unlock_irqrestore(&hisi_hba
->lock
, flags
);
1526 spin_unlock_irqrestore(&dq
->lock
, flags_dq
);
1528 dev_err(dev
, "internal abort task prep: failed[%d]!\n", rc
);
1534 * hisi_sas_internal_task_abort -- execute an internal
1535 * abort command for single IO command or a device
1536 * @hisi_hba: host controller struct
1537 * @device: domain device
1538 * @abort_flag: mode of operation, device or single IO
1539 * @tag: tag of IO to be aborted (only relevant to single
1543 hisi_sas_internal_task_abort(struct hisi_hba
*hisi_hba
,
1544 struct domain_device
*device
,
1545 int abort_flag
, int tag
)
1547 struct sas_task
*task
;
1548 struct hisi_sas_device
*sas_dev
= device
->lldd_dev
;
1549 struct device
*dev
= hisi_hba
->dev
;
1553 * The interface is not realized means this HW don't support internal
1554 * abort, or don't need to do internal abort. Then here, we return
1555 * TMF_RESP_FUNC_FAILED and let other steps go on, which depends that
1556 * the internal abort has been executed and returned CQ.
1558 if (!hisi_hba
->hw
->prep_abort
)
1559 return TMF_RESP_FUNC_FAILED
;
1561 task
= sas_alloc_slow_task(GFP_KERNEL
);
1566 task
->task_proto
= device
->tproto
;
1567 task
->task_done
= hisi_sas_task_done
;
1568 task
->slow_task
->timer
.function
= hisi_sas_tmf_timedout
;
1569 task
->slow_task
->timer
.expires
= jiffies
+ INTERNAL_ABORT_TIMEOUT
*HZ
;
1570 add_timer(&task
->slow_task
->timer
);
1572 res
= hisi_sas_internal_abort_task_exec(hisi_hba
, sas_dev
->device_id
,
1573 task
, abort_flag
, tag
);
1575 del_timer(&task
->slow_task
->timer
);
1576 dev_err(dev
, "internal task abort: executing internal task failed: %d\n",
1580 wait_for_completion(&task
->slow_task
->completion
);
1581 res
= TMF_RESP_FUNC_FAILED
;
1583 /* Internal abort timed out */
1584 if ((task
->task_state_flags
& SAS_TASK_STATE_ABORTED
)) {
1585 if (!(task
->task_state_flags
& SAS_TASK_STATE_DONE
)) {
1586 struct hisi_sas_slot
*slot
= task
->lldd_task
;
1590 dev_err(dev
, "internal task abort: timeout and not done.\n");
1594 dev_err(dev
, "internal task abort: timeout.\n");
1597 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
1598 task
->task_status
.stat
== TMF_RESP_FUNC_COMPLETE
) {
1599 res
= TMF_RESP_FUNC_COMPLETE
;
1603 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
1604 task
->task_status
.stat
== TMF_RESP_FUNC_SUCC
) {
1605 res
= TMF_RESP_FUNC_SUCC
;
1610 dev_dbg(dev
, "internal task abort: task to dev %016llx task=%p "
1611 "resp: 0x%x sts 0x%x\n",
1612 SAS_ADDR(device
->sas_addr
),
1614 task
->task_status
.resp
, /* 0 is complete, -1 is undelivered */
1615 task
->task_status
.stat
);
1616 sas_free_task(task
);
1621 static void hisi_sas_port_formed(struct asd_sas_phy
*sas_phy
)
1623 hisi_sas_port_notify_formed(sas_phy
);
1626 static void hisi_sas_port_deformed(struct asd_sas_phy
*sas_phy
)
1630 static int hisi_sas_write_gpio(struct sas_ha_struct
*sha
, u8 reg_type
,
1631 u8 reg_index
, u8 reg_count
, u8
*write_data
)
1633 struct hisi_hba
*hisi_hba
= sha
->lldd_ha
;
1635 if (!hisi_hba
->hw
->write_gpio
)
1638 return hisi_hba
->hw
->write_gpio(hisi_hba
, reg_type
,
1639 reg_index
, reg_count
, write_data
);
1642 static void hisi_sas_phy_disconnected(struct hisi_sas_phy
*phy
)
1644 phy
->phy_attached
= 0;
1649 void hisi_sas_phy_down(struct hisi_hba
*hisi_hba
, int phy_no
, int rdy
)
1651 struct hisi_sas_phy
*phy
= &hisi_hba
->phy
[phy_no
];
1652 struct asd_sas_phy
*sas_phy
= &phy
->sas_phy
;
1653 struct sas_ha_struct
*sas_ha
= &hisi_hba
->sha
;
1656 /* Phy down but ready */
1657 hisi_sas_bytes_dmaed(hisi_hba
, phy_no
);
1658 hisi_sas_port_notify_formed(sas_phy
);
1660 struct hisi_sas_port
*port
= phy
->port
;
1662 /* Phy down and not ready */
1663 sas_ha
->notify_phy_event(sas_phy
, PHYE_LOSS_OF_SIGNAL
);
1664 sas_phy_disconnected(sas_phy
);
1667 if (phy
->phy_type
& PORT_TYPE_SAS
) {
1668 int port_id
= port
->id
;
1670 if (!hisi_hba
->hw
->get_wideport_bitmap(hisi_hba
,
1672 port
->port_attached
= 0;
1673 } else if (phy
->phy_type
& PORT_TYPE_SATA
)
1674 port
->port_attached
= 0;
1676 hisi_sas_phy_disconnected(phy
);
1679 EXPORT_SYMBOL_GPL(hisi_sas_phy_down
);
1681 void hisi_sas_kill_tasklets(struct hisi_hba
*hisi_hba
)
1685 for (i
= 0; i
< hisi_hba
->queue_count
; i
++) {
1686 struct hisi_sas_cq
*cq
= &hisi_hba
->cq
[i
];
1688 tasklet_kill(&cq
->tasklet
);
1691 EXPORT_SYMBOL_GPL(hisi_sas_kill_tasklets
);
1693 struct scsi_transport_template
*hisi_sas_stt
;
1694 EXPORT_SYMBOL_GPL(hisi_sas_stt
);
1696 static struct device_attribute
*host_attrs
[] = {
1697 &dev_attr_phy_event_threshold
,
1701 static struct scsi_host_template _hisi_sas_sht
= {
1702 .module
= THIS_MODULE
,
1704 .queuecommand
= sas_queuecommand
,
1705 .target_alloc
= sas_target_alloc
,
1706 .slave_configure
= hisi_sas_slave_configure
,
1707 .scan_finished
= hisi_sas_scan_finished
,
1708 .scan_start
= hisi_sas_scan_start
,
1709 .change_queue_depth
= sas_change_queue_depth
,
1710 .bios_param
= sas_bios_param
,
1713 .sg_tablesize
= SG_ALL
,
1714 .max_sectors
= SCSI_DEFAULT_MAX_SECTORS
,
1715 .use_clustering
= ENABLE_CLUSTERING
,
1716 .eh_device_reset_handler
= sas_eh_device_reset_handler
,
1717 .eh_target_reset_handler
= sas_eh_target_reset_handler
,
1718 .target_destroy
= sas_target_destroy
,
1720 .shost_attrs
= host_attrs
,
1722 struct scsi_host_template
*hisi_sas_sht
= &_hisi_sas_sht
;
1723 EXPORT_SYMBOL_GPL(hisi_sas_sht
);
1725 static struct sas_domain_function_template hisi_sas_transport_ops
= {
1726 .lldd_dev_found
= hisi_sas_dev_found
,
1727 .lldd_dev_gone
= hisi_sas_dev_gone
,
1728 .lldd_execute_task
= hisi_sas_queue_command
,
1729 .lldd_control_phy
= hisi_sas_control_phy
,
1730 .lldd_abort_task
= hisi_sas_abort_task
,
1731 .lldd_abort_task_set
= hisi_sas_abort_task_set
,
1732 .lldd_clear_aca
= hisi_sas_clear_aca
,
1733 .lldd_I_T_nexus_reset
= hisi_sas_I_T_nexus_reset
,
1734 .lldd_lu_reset
= hisi_sas_lu_reset
,
1735 .lldd_query_task
= hisi_sas_query_task
,
1736 .lldd_clear_nexus_ha
= hisi_sas_clear_nexus_ha
,
1737 .lldd_port_formed
= hisi_sas_port_formed
,
1738 .lldd_port_deformed
= hisi_sas_port_deformed
,
1739 .lldd_write_gpio
= hisi_sas_write_gpio
,
1742 void hisi_sas_init_mem(struct hisi_hba
*hisi_hba
)
1744 int i
, s
, max_command_entries
= hisi_hba
->hw
->max_command_entries
;
1746 for (i
= 0; i
< hisi_hba
->queue_count
; i
++) {
1747 struct hisi_sas_cq
*cq
= &hisi_hba
->cq
[i
];
1748 struct hisi_sas_dq
*dq
= &hisi_hba
->dq
[i
];
1750 s
= sizeof(struct hisi_sas_cmd_hdr
) * HISI_SAS_QUEUE_SLOTS
;
1751 memset(hisi_hba
->cmd_hdr
[i
], 0, s
);
1754 s
= hisi_hba
->hw
->complete_hdr_size
* HISI_SAS_QUEUE_SLOTS
;
1755 memset(hisi_hba
->complete_hdr
[i
], 0, s
);
1759 s
= sizeof(struct hisi_sas_initial_fis
) * hisi_hba
->n_phy
;
1760 memset(hisi_hba
->initial_fis
, 0, s
);
1762 s
= max_command_entries
* sizeof(struct hisi_sas_iost
);
1763 memset(hisi_hba
->iost
, 0, s
);
1765 s
= max_command_entries
* sizeof(struct hisi_sas_breakpoint
);
1766 memset(hisi_hba
->breakpoint
, 0, s
);
1768 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_sata_breakpoint
);
1769 memset(hisi_hba
->sata_breakpoint
, 0, s
);
1771 EXPORT_SYMBOL_GPL(hisi_sas_init_mem
);
1773 int hisi_sas_alloc(struct hisi_hba
*hisi_hba
, struct Scsi_Host
*shost
)
1775 struct device
*dev
= hisi_hba
->dev
;
1776 int i
, s
, max_command_entries
= hisi_hba
->hw
->max_command_entries
;
1778 spin_lock_init(&hisi_hba
->lock
);
1779 for (i
= 0; i
< hisi_hba
->n_phy
; i
++) {
1780 hisi_sas_phy_init(hisi_hba
, i
);
1781 hisi_hba
->port
[i
].port_attached
= 0;
1782 hisi_hba
->port
[i
].id
= -1;
1785 for (i
= 0; i
< HISI_SAS_MAX_DEVICES
; i
++) {
1786 hisi_hba
->devices
[i
].dev_type
= SAS_PHY_UNUSED
;
1787 hisi_hba
->devices
[i
].device_id
= i
;
1788 hisi_hba
->devices
[i
].dev_status
= HISI_SAS_DEV_NORMAL
;
1791 for (i
= 0; i
< hisi_hba
->queue_count
; i
++) {
1792 struct hisi_sas_cq
*cq
= &hisi_hba
->cq
[i
];
1793 struct hisi_sas_dq
*dq
= &hisi_hba
->dq
[i
];
1795 /* Completion queue structure */
1797 cq
->hisi_hba
= hisi_hba
;
1799 /* Delivery queue structure */
1801 dq
->hisi_hba
= hisi_hba
;
1803 /* Delivery queue */
1804 s
= sizeof(struct hisi_sas_cmd_hdr
) * HISI_SAS_QUEUE_SLOTS
;
1805 hisi_hba
->cmd_hdr
[i
] = dma_alloc_coherent(dev
, s
,
1806 &hisi_hba
->cmd_hdr_dma
[i
], GFP_KERNEL
);
1807 if (!hisi_hba
->cmd_hdr
[i
])
1810 /* Completion queue */
1811 s
= hisi_hba
->hw
->complete_hdr_size
* HISI_SAS_QUEUE_SLOTS
;
1812 hisi_hba
->complete_hdr
[i
] = dma_alloc_coherent(dev
, s
,
1813 &hisi_hba
->complete_hdr_dma
[i
], GFP_KERNEL
);
1814 if (!hisi_hba
->complete_hdr
[i
])
1818 s
= sizeof(struct hisi_sas_slot_buf_table
);
1819 hisi_hba
->buffer_pool
= dma_pool_create("dma_buffer", dev
, s
, 16, 0);
1820 if (!hisi_hba
->buffer_pool
)
1823 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_itct
);
1824 hisi_hba
->itct
= dma_alloc_coherent(dev
, s
, &hisi_hba
->itct_dma
,
1826 if (!hisi_hba
->itct
)
1829 memset(hisi_hba
->itct
, 0, s
);
1831 hisi_hba
->slot_info
= devm_kcalloc(dev
, max_command_entries
,
1832 sizeof(struct hisi_sas_slot
),
1834 if (!hisi_hba
->slot_info
)
1837 s
= max_command_entries
* sizeof(struct hisi_sas_iost
);
1838 hisi_hba
->iost
= dma_alloc_coherent(dev
, s
, &hisi_hba
->iost_dma
,
1840 if (!hisi_hba
->iost
)
1843 s
= max_command_entries
* sizeof(struct hisi_sas_breakpoint
);
1844 hisi_hba
->breakpoint
= dma_alloc_coherent(dev
, s
,
1845 &hisi_hba
->breakpoint_dma
, GFP_KERNEL
);
1846 if (!hisi_hba
->breakpoint
)
1849 hisi_hba
->slot_index_count
= max_command_entries
;
1850 s
= hisi_hba
->slot_index_count
/ BITS_PER_BYTE
;
1851 hisi_hba
->slot_index_tags
= devm_kzalloc(dev
, s
, GFP_KERNEL
);
1852 if (!hisi_hba
->slot_index_tags
)
1855 s
= sizeof(struct hisi_sas_initial_fis
) * HISI_SAS_MAX_PHYS
;
1856 hisi_hba
->initial_fis
= dma_alloc_coherent(dev
, s
,
1857 &hisi_hba
->initial_fis_dma
, GFP_KERNEL
);
1858 if (!hisi_hba
->initial_fis
)
1861 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_sata_breakpoint
);
1862 hisi_hba
->sata_breakpoint
= dma_alloc_coherent(dev
, s
,
1863 &hisi_hba
->sata_breakpoint_dma
, GFP_KERNEL
);
1864 if (!hisi_hba
->sata_breakpoint
)
1866 hisi_sas_init_mem(hisi_hba
);
1868 hisi_sas_slot_index_init(hisi_hba
);
1870 hisi_hba
->wq
= create_singlethread_workqueue(dev_name(dev
));
1871 if (!hisi_hba
->wq
) {
1872 dev_err(dev
, "sas_alloc: failed to create workqueue\n");
1880 EXPORT_SYMBOL_GPL(hisi_sas_alloc
);
1882 void hisi_sas_free(struct hisi_hba
*hisi_hba
)
1884 struct device
*dev
= hisi_hba
->dev
;
1885 int i
, s
, max_command_entries
= hisi_hba
->hw
->max_command_entries
;
1887 for (i
= 0; i
< hisi_hba
->queue_count
; i
++) {
1888 s
= sizeof(struct hisi_sas_cmd_hdr
) * HISI_SAS_QUEUE_SLOTS
;
1889 if (hisi_hba
->cmd_hdr
[i
])
1890 dma_free_coherent(dev
, s
,
1891 hisi_hba
->cmd_hdr
[i
],
1892 hisi_hba
->cmd_hdr_dma
[i
]);
1894 s
= hisi_hba
->hw
->complete_hdr_size
* HISI_SAS_QUEUE_SLOTS
;
1895 if (hisi_hba
->complete_hdr
[i
])
1896 dma_free_coherent(dev
, s
,
1897 hisi_hba
->complete_hdr
[i
],
1898 hisi_hba
->complete_hdr_dma
[i
]);
1901 dma_pool_destroy(hisi_hba
->buffer_pool
);
1903 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_itct
);
1905 dma_free_coherent(dev
, s
,
1906 hisi_hba
->itct
, hisi_hba
->itct_dma
);
1908 s
= max_command_entries
* sizeof(struct hisi_sas_iost
);
1910 dma_free_coherent(dev
, s
,
1911 hisi_hba
->iost
, hisi_hba
->iost_dma
);
1913 s
= max_command_entries
* sizeof(struct hisi_sas_breakpoint
);
1914 if (hisi_hba
->breakpoint
)
1915 dma_free_coherent(dev
, s
,
1916 hisi_hba
->breakpoint
,
1917 hisi_hba
->breakpoint_dma
);
1920 s
= sizeof(struct hisi_sas_initial_fis
) * HISI_SAS_MAX_PHYS
;
1921 if (hisi_hba
->initial_fis
)
1922 dma_free_coherent(dev
, s
,
1923 hisi_hba
->initial_fis
,
1924 hisi_hba
->initial_fis_dma
);
1926 s
= HISI_SAS_MAX_ITCT_ENTRIES
* sizeof(struct hisi_sas_sata_breakpoint
);
1927 if (hisi_hba
->sata_breakpoint
)
1928 dma_free_coherent(dev
, s
,
1929 hisi_hba
->sata_breakpoint
,
1930 hisi_hba
->sata_breakpoint_dma
);
1933 destroy_workqueue(hisi_hba
->wq
);
1935 EXPORT_SYMBOL_GPL(hisi_sas_free
);
1937 void hisi_sas_rst_work_handler(struct work_struct
*work
)
1939 struct hisi_hba
*hisi_hba
=
1940 container_of(work
, struct hisi_hba
, rst_work
);
1942 hisi_sas_controller_reset(hisi_hba
);
1944 EXPORT_SYMBOL_GPL(hisi_sas_rst_work_handler
);
1946 void hisi_sas_sync_rst_work_handler(struct work_struct
*work
)
1948 struct hisi_sas_rst
*rst
=
1949 container_of(work
, struct hisi_sas_rst
, work
);
1951 if (!hisi_sas_controller_reset(rst
->hisi_hba
))
1953 complete(rst
->completion
);
1955 EXPORT_SYMBOL_GPL(hisi_sas_sync_rst_work_handler
);
1957 int hisi_sas_get_fw_info(struct hisi_hba
*hisi_hba
)
1959 struct device
*dev
= hisi_hba
->dev
;
1960 struct platform_device
*pdev
= hisi_hba
->platform_dev
;
1961 struct device_node
*np
= pdev
? pdev
->dev
.of_node
: NULL
;
1964 if (device_property_read_u8_array(dev
, "sas-addr", hisi_hba
->sas_addr
,
1966 dev_err(dev
, "could not get property sas-addr\n");
1972 * These properties are only required for platform device-based
1973 * controller with DT firmware.
1975 hisi_hba
->ctrl
= syscon_regmap_lookup_by_phandle(np
,
1976 "hisilicon,sas-syscon");
1977 if (IS_ERR(hisi_hba
->ctrl
)) {
1978 dev_err(dev
, "could not get syscon\n");
1982 if (device_property_read_u32(dev
, "ctrl-reset-reg",
1983 &hisi_hba
->ctrl_reset_reg
)) {
1985 "could not get property ctrl-reset-reg\n");
1989 if (device_property_read_u32(dev
, "ctrl-reset-sts-reg",
1990 &hisi_hba
->ctrl_reset_sts_reg
)) {
1992 "could not get property ctrl-reset-sts-reg\n");
1996 if (device_property_read_u32(dev
, "ctrl-clock-ena-reg",
1997 &hisi_hba
->ctrl_clock_ena_reg
)) {
1999 "could not get property ctrl-clock-ena-reg\n");
2004 refclk
= devm_clk_get(dev
, NULL
);
2006 dev_dbg(dev
, "no ref clk property\n");
2008 hisi_hba
->refclk_frequency_mhz
= clk_get_rate(refclk
) / 1000000;
2010 if (device_property_read_u32(dev
, "phy-count", &hisi_hba
->n_phy
)) {
2011 dev_err(dev
, "could not get property phy-count\n");
2015 if (device_property_read_u32(dev
, "queue-count",
2016 &hisi_hba
->queue_count
)) {
2017 dev_err(dev
, "could not get property queue-count\n");
2023 EXPORT_SYMBOL_GPL(hisi_sas_get_fw_info
);
2025 static struct Scsi_Host
*hisi_sas_shost_alloc(struct platform_device
*pdev
,
2026 const struct hisi_sas_hw
*hw
)
2028 struct resource
*res
;
2029 struct Scsi_Host
*shost
;
2030 struct hisi_hba
*hisi_hba
;
2031 struct device
*dev
= &pdev
->dev
;
2033 shost
= scsi_host_alloc(hisi_sas_sht
, sizeof(*hisi_hba
));
2035 dev_err(dev
, "scsi host alloc failed\n");
2038 hisi_hba
= shost_priv(shost
);
2040 INIT_WORK(&hisi_hba
->rst_work
, hisi_sas_rst_work_handler
);
2042 hisi_hba
->dev
= dev
;
2043 hisi_hba
->platform_dev
= pdev
;
2044 hisi_hba
->shost
= shost
;
2045 SHOST_TO_SAS_HA(shost
) = &hisi_hba
->sha
;
2047 timer_setup(&hisi_hba
->timer
, NULL
, 0);
2049 if (hisi_sas_get_fw_info(hisi_hba
) < 0)
2052 if (dma_set_mask_and_coherent(dev
, DMA_BIT_MASK(64)) &&
2053 dma_set_mask_and_coherent(dev
, DMA_BIT_MASK(32))) {
2054 dev_err(dev
, "No usable DMA addressing method\n");
2058 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
2059 hisi_hba
->regs
= devm_ioremap_resource(dev
, res
);
2060 if (IS_ERR(hisi_hba
->regs
))
2063 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 1);
2065 hisi_hba
->sgpio_regs
= devm_ioremap_resource(dev
, res
);
2066 if (IS_ERR(hisi_hba
->sgpio_regs
))
2070 if (hisi_sas_alloc(hisi_hba
, shost
)) {
2071 hisi_sas_free(hisi_hba
);
2077 scsi_host_put(shost
);
2078 dev_err(dev
, "shost alloc failed\n");
2082 void hisi_sas_init_add(struct hisi_hba
*hisi_hba
)
2086 for (i
= 0; i
< hisi_hba
->n_phy
; i
++)
2087 memcpy(&hisi_hba
->phy
[i
].dev_sas_addr
,
2091 EXPORT_SYMBOL_GPL(hisi_sas_init_add
);
2093 int hisi_sas_probe(struct platform_device
*pdev
,
2094 const struct hisi_sas_hw
*hw
)
2096 struct Scsi_Host
*shost
;
2097 struct hisi_hba
*hisi_hba
;
2098 struct device
*dev
= &pdev
->dev
;
2099 struct asd_sas_phy
**arr_phy
;
2100 struct asd_sas_port
**arr_port
;
2101 struct sas_ha_struct
*sha
;
2102 int rc
, phy_nr
, port_nr
, i
;
2104 shost
= hisi_sas_shost_alloc(pdev
, hw
);
2108 sha
= SHOST_TO_SAS_HA(shost
);
2109 hisi_hba
= shost_priv(shost
);
2110 platform_set_drvdata(pdev
, sha
);
2112 phy_nr
= port_nr
= hisi_hba
->n_phy
;
2114 arr_phy
= devm_kcalloc(dev
, phy_nr
, sizeof(void *), GFP_KERNEL
);
2115 arr_port
= devm_kcalloc(dev
, port_nr
, sizeof(void *), GFP_KERNEL
);
2116 if (!arr_phy
|| !arr_port
) {
2121 sha
->sas_phy
= arr_phy
;
2122 sha
->sas_port
= arr_port
;
2123 sha
->lldd_ha
= hisi_hba
;
2125 shost
->transportt
= hisi_sas_stt
;
2126 shost
->max_id
= HISI_SAS_MAX_DEVICES
;
2127 shost
->max_lun
= ~0;
2128 shost
->max_channel
= 1;
2129 shost
->max_cmd_len
= 16;
2130 shost
->sg_tablesize
= min_t(u16
, SG_ALL
, HISI_SAS_SGE_PAGE_CNT
);
2131 shost
->can_queue
= hisi_hba
->hw
->max_command_entries
;
2132 shost
->cmd_per_lun
= hisi_hba
->hw
->max_command_entries
;
2134 sha
->sas_ha_name
= DRV_NAME
;
2135 sha
->dev
= hisi_hba
->dev
;
2136 sha
->lldd_module
= THIS_MODULE
;
2137 sha
->sas_addr
= &hisi_hba
->sas_addr
[0];
2138 sha
->num_phys
= hisi_hba
->n_phy
;
2139 sha
->core
.shost
= hisi_hba
->shost
;
2141 for (i
= 0; i
< hisi_hba
->n_phy
; i
++) {
2142 sha
->sas_phy
[i
] = &hisi_hba
->phy
[i
].sas_phy
;
2143 sha
->sas_port
[i
] = &hisi_hba
->port
[i
].sas_port
;
2146 hisi_sas_init_add(hisi_hba
);
2148 rc
= scsi_add_host(shost
, &pdev
->dev
);
2152 rc
= sas_register_ha(sha
);
2154 goto err_out_register_ha
;
2156 rc
= hisi_hba
->hw
->hw_init(hisi_hba
);
2158 goto err_out_register_ha
;
2160 scsi_scan_host(shost
);
2164 err_out_register_ha
:
2165 scsi_remove_host(shost
);
2167 hisi_sas_free(hisi_hba
);
2168 scsi_host_put(shost
);
2171 EXPORT_SYMBOL_GPL(hisi_sas_probe
);
2173 int hisi_sas_remove(struct platform_device
*pdev
)
2175 struct sas_ha_struct
*sha
= platform_get_drvdata(pdev
);
2176 struct hisi_hba
*hisi_hba
= sha
->lldd_ha
;
2177 struct Scsi_Host
*shost
= sha
->core
.shost
;
2179 sas_unregister_ha(sha
);
2180 sas_remove_host(sha
->core
.shost
);
2182 hisi_sas_free(hisi_hba
);
2183 scsi_host_put(shost
);
2186 EXPORT_SYMBOL_GPL(hisi_sas_remove
);
2188 static __init
int hisi_sas_init(void)
2190 hisi_sas_stt
= sas_domain_attach_transport(&hisi_sas_transport_ops
);
2197 static __exit
void hisi_sas_exit(void)
2199 sas_release_transport(hisi_sas_stt
);
2202 module_init(hisi_sas_init
);
2203 module_exit(hisi_sas_exit
);
2205 MODULE_LICENSE("GPL");
2206 MODULE_AUTHOR("John Garry <john.garry@huawei.com>");
2207 MODULE_DESCRIPTION("HISILICON SAS controller driver");
2208 MODULE_ALIAS("platform:" DRV_NAME
);