2 * PMC-Sierra SPC 8001 SAS/SATA based host adapters driver
4 * Copyright (c) 2008-2009 USI Co., Ltd.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions, and the following disclaimer,
12 * without modification.
13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
14 * substantially similar to the "NO WARRANTY" disclaimer below
15 * ("Disclaimer") and any redistribution must be conditioned upon
16 * including a substantially similar Disclaimer requirement for further
17 * binary redistribution.
18 * 3. Neither the names of the above-listed copyright holders nor the names
19 * of any contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
22 * Alternatively, this software may be distributed under the terms of the
23 * GNU General Public License ("GPL") version 2 as published by the Free
24 * Software Foundation.
27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
29 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
30 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
31 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
35 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
36 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGES.
41 #include <linux/slab.h>
42 #include "pm8001_sas.h"
45 * pm8001_find_tag - from sas task to find out tag that belongs to this task
46 * @task: the task sent to the LLDD
47 * @tag: the found tag associated with the task
49 static int pm8001_find_tag(struct sas_task
*task
, u32
*tag
)
51 if (task
->lldd_task
) {
52 struct pm8001_ccb_info
*ccb
;
53 ccb
= task
->lldd_task
;
61 * pm8001_tag_clear - clear the tags bitmap
62 * @pm8001_ha: our hba struct
63 * @tag: the found tag associated with the task
65 static void pm8001_tag_clear(struct pm8001_hba_info
*pm8001_ha
, u32 tag
)
67 void *bitmap
= pm8001_ha
->tags
;
68 clear_bit(tag
, bitmap
);
71 static void pm8001_tag_free(struct pm8001_hba_info
*pm8001_ha
, u32 tag
)
73 pm8001_tag_clear(pm8001_ha
, tag
);
76 static void pm8001_tag_set(struct pm8001_hba_info
*pm8001_ha
, u32 tag
)
78 void *bitmap
= pm8001_ha
->tags
;
83 * pm8001_tag_alloc - allocate a empty tag for task used.
84 * @pm8001_ha: our hba struct
85 * @tag_out: the found empty tag .
87 inline int pm8001_tag_alloc(struct pm8001_hba_info
*pm8001_ha
, u32
*tag_out
)
89 unsigned int index
, tag
;
90 void *bitmap
= pm8001_ha
->tags
;
92 index
= find_first_zero_bit(bitmap
, pm8001_ha
->tags_num
);
94 if (tag
>= pm8001_ha
->tags_num
)
95 return -SAS_QUEUE_FULL
;
96 pm8001_tag_set(pm8001_ha
, tag
);
101 void pm8001_tag_init(struct pm8001_hba_info
*pm8001_ha
)
104 for (i
= 0; i
< pm8001_ha
->tags_num
; ++i
)
105 pm8001_tag_clear(pm8001_ha
, i
);
109 * pm8001_mem_alloc - allocate memory for pm8001.
111 * @virt_addr: the allocated virtual address
112 * @pphys_addr_hi: the physical address high byte address.
113 * @pphys_addr_lo: the physical address low byte address.
114 * @mem_size: memory size.
116 int pm8001_mem_alloc(struct pci_dev
*pdev
, void **virt_addr
,
117 dma_addr_t
*pphys_addr
, u32
*pphys_addr_hi
,
118 u32
*pphys_addr_lo
, u32 mem_size
, u32 align
)
120 caddr_t mem_virt_alloc
;
121 dma_addr_t mem_dma_handle
;
123 u64 align_offset
= 0;
125 align_offset
= (dma_addr_t
)align
- 1;
127 pci_alloc_consistent(pdev
, mem_size
+ align
, &mem_dma_handle
);
128 if (!mem_virt_alloc
) {
129 pm8001_printk("memory allocation error\n");
132 memset((void *)mem_virt_alloc
, 0, mem_size
+align
);
133 *pphys_addr
= mem_dma_handle
;
134 phys_align
= (*pphys_addr
+ align_offset
) & ~align_offset
;
135 *virt_addr
= (void *)mem_virt_alloc
+ phys_align
- *pphys_addr
;
136 *pphys_addr_hi
= upper_32_bits(phys_align
);
137 *pphys_addr_lo
= lower_32_bits(phys_align
);
141 * pm8001_find_ha_by_dev - from domain device which come from sas layer to
142 * find out our hba struct.
143 * @dev: the domain device which from sas layer.
146 struct pm8001_hba_info
*pm8001_find_ha_by_dev(struct domain_device
*dev
)
148 struct sas_ha_struct
*sha
= dev
->port
->ha
;
149 struct pm8001_hba_info
*pm8001_ha
= sha
->lldd_ha
;
154 * pm8001_phy_control - this function should be registered to
155 * sas_domain_function_template to provide libsas used, note: this is just
156 * control the HBA phy rather than other expander phy if you want control
157 * other phy, you should use SMP command.
158 * @sas_phy: which phy in HBA phys.
159 * @func: the operation.
160 * @funcdata: always NULL.
162 int pm8001_phy_control(struct asd_sas_phy
*sas_phy
, enum phy_func func
,
165 int rc
= 0, phy_id
= sas_phy
->id
;
166 struct pm8001_hba_info
*pm8001_ha
= NULL
;
167 struct sas_phy_linkrates
*rates
;
168 DECLARE_COMPLETION_ONSTACK(completion
);
169 pm8001_ha
= sas_phy
->ha
->lldd_ha
;
170 pm8001_ha
->phy
[phy_id
].enable_completion
= &completion
;
172 case PHY_FUNC_SET_LINK_RATE
:
174 if (rates
->minimum_linkrate
) {
175 pm8001_ha
->phy
[phy_id
].minimum_linkrate
=
176 rates
->minimum_linkrate
;
178 if (rates
->maximum_linkrate
) {
179 pm8001_ha
->phy
[phy_id
].maximum_linkrate
=
180 rates
->maximum_linkrate
;
182 if (pm8001_ha
->phy
[phy_id
].phy_state
== 0) {
183 PM8001_CHIP_DISP
->phy_start_req(pm8001_ha
, phy_id
);
184 wait_for_completion(&completion
);
186 PM8001_CHIP_DISP
->phy_ctl_req(pm8001_ha
, phy_id
,
189 case PHY_FUNC_HARD_RESET
:
190 if (pm8001_ha
->phy
[phy_id
].phy_state
== 0) {
191 PM8001_CHIP_DISP
->phy_start_req(pm8001_ha
, phy_id
);
192 wait_for_completion(&completion
);
194 PM8001_CHIP_DISP
->phy_ctl_req(pm8001_ha
, phy_id
,
197 case PHY_FUNC_LINK_RESET
:
198 if (pm8001_ha
->phy
[phy_id
].phy_state
== 0) {
199 PM8001_CHIP_DISP
->phy_start_req(pm8001_ha
, phy_id
);
200 wait_for_completion(&completion
);
202 PM8001_CHIP_DISP
->phy_ctl_req(pm8001_ha
, phy_id
,
205 case PHY_FUNC_RELEASE_SPINUP_HOLD
:
206 PM8001_CHIP_DISP
->phy_ctl_req(pm8001_ha
, phy_id
,
209 case PHY_FUNC_DISABLE
:
210 PM8001_CHIP_DISP
->phy_stop_req(pm8001_ha
, phy_id
);
219 int pm8001_slave_alloc(struct scsi_device
*scsi_dev
)
221 struct domain_device
*dev
= sdev_to_domain_dev(scsi_dev
);
222 if (dev_is_sata(dev
)) {
223 /* We don't need to rescan targets
224 * if REPORT_LUNS request is failed
226 if (scsi_dev
->lun
> 0)
228 scsi_dev
->tagged_supported
= 1;
230 return sas_slave_alloc(scsi_dev
);
234 * pm8001_scan_start - we should enable all HBA phys by sending the phy_start
236 * @shost: the scsi host data.
238 void pm8001_scan_start(struct Scsi_Host
*shost
)
241 struct pm8001_hba_info
*pm8001_ha
;
242 struct sas_ha_struct
*sha
= SHOST_TO_SAS_HA(shost
);
243 pm8001_ha
= sha
->lldd_ha
;
244 PM8001_CHIP_DISP
->sas_re_init_req(pm8001_ha
);
245 for (i
= 0; i
< pm8001_ha
->chip
->n_phy
; ++i
)
246 PM8001_CHIP_DISP
->phy_start_req(pm8001_ha
, i
);
249 int pm8001_scan_finished(struct Scsi_Host
*shost
, unsigned long time
)
251 /* give the phy enabling interrupt event time to come in (1s
252 * is empirically about all it takes) */
255 /* Wait for discovery to finish */
256 scsi_flush_work(shost
);
261 * pm8001_task_prep_smp - the dispatcher function, prepare data for smp task
262 * @pm8001_ha: our hba card information
263 * @ccb: the ccb which attached to smp task
265 static int pm8001_task_prep_smp(struct pm8001_hba_info
*pm8001_ha
,
266 struct pm8001_ccb_info
*ccb
)
268 return PM8001_CHIP_DISP
->smp_req(pm8001_ha
, ccb
);
271 u32
pm8001_get_ncq_tag(struct sas_task
*task
, u32
*tag
)
273 struct ata_queued_cmd
*qc
= task
->uldd_task
;
275 if (qc
->tf
.command
== ATA_CMD_FPDMA_WRITE
||
276 qc
->tf
.command
== ATA_CMD_FPDMA_READ
) {
285 * pm8001_task_prep_ata - the dispatcher function, prepare data for sata task
286 * @pm8001_ha: our hba card information
287 * @ccb: the ccb which attached to sata task
289 static int pm8001_task_prep_ata(struct pm8001_hba_info
*pm8001_ha
,
290 struct pm8001_ccb_info
*ccb
)
292 return PM8001_CHIP_DISP
->sata_req(pm8001_ha
, ccb
);
296 * pm8001_task_prep_ssp_tm - the dispatcher function, prepare task management data
297 * @pm8001_ha: our hba card information
298 * @ccb: the ccb which attached to TM
299 * @tmf: the task management IU
301 static int pm8001_task_prep_ssp_tm(struct pm8001_hba_info
*pm8001_ha
,
302 struct pm8001_ccb_info
*ccb
, struct pm8001_tmf_task
*tmf
)
304 return PM8001_CHIP_DISP
->ssp_tm_req(pm8001_ha
, ccb
, tmf
);
308 * pm8001_task_prep_ssp - the dispatcher function,prepare ssp data for ssp task
309 * @pm8001_ha: our hba card information
310 * @ccb: the ccb which attached to ssp task
312 static int pm8001_task_prep_ssp(struct pm8001_hba_info
*pm8001_ha
,
313 struct pm8001_ccb_info
*ccb
)
315 return PM8001_CHIP_DISP
->ssp_io_req(pm8001_ha
, ccb
);
317 int pm8001_slave_configure(struct scsi_device
*sdev
)
319 struct domain_device
*dev
= sdev_to_domain_dev(sdev
);
320 int ret
= sas_slave_configure(sdev
);
323 if (dev_is_sata(dev
)) {
324 #ifdef PM8001_DISABLE_NCQ
325 struct ata_port
*ap
= dev
->sata_dev
.ap
;
326 struct ata_device
*adev
= ap
->link
.device
;
327 adev
->flags
|= ATA_DFLAG_NCQ_OFF
;
328 scsi_adjust_queue_depth(sdev
, MSG_SIMPLE_TAG
, 1);
333 /* Find the local port id that's attached to this device */
334 static int sas_find_local_port_id(struct domain_device
*dev
)
336 struct domain_device
*pdev
= dev
->parent
;
338 /* Directly attached device */
340 return dev
->port
->id
;
342 struct domain_device
*pdev_p
= pdev
->parent
;
344 return pdev
->port
->id
;
351 * pm8001_task_exec - queue the task(ssp, smp && ata) to the hardware.
352 * @task: the task to be execute.
353 * @num: if can_queue great than 1, the task can be queued up. for SMP task,
354 * we always execute one one time.
355 * @gfp_flags: gfp_flags.
356 * @is_tmf: if it is task management task.
357 * @tmf: the task management IU
359 #define DEV_IS_GONE(pm8001_dev) \
360 ((!pm8001_dev || (pm8001_dev->dev_type == NO_DEVICE)))
361 static int pm8001_task_exec(struct sas_task
*task
, const int num
,
362 gfp_t gfp_flags
, int is_tmf
, struct pm8001_tmf_task
*tmf
)
364 struct domain_device
*dev
= task
->dev
;
365 struct pm8001_hba_info
*pm8001_ha
;
366 struct pm8001_device
*pm8001_dev
;
367 struct pm8001_port
*port
= NULL
;
368 struct sas_task
*t
= task
;
369 struct pm8001_ccb_info
*ccb
;
370 u32 tag
= 0xdeadbeef, rc
, n_elem
= 0;
372 unsigned long flags
= 0, flags_libsas
= 0;
375 struct task_status_struct
*tsm
= &t
->task_status
;
376 tsm
->resp
= SAS_TASK_UNDELIVERED
;
377 tsm
->stat
= SAS_PHY_DOWN
;
378 if (dev
->dev_type
!= SATA_DEV
)
382 pm8001_ha
= pm8001_find_ha_by_dev(task
->dev
);
383 PM8001_IO_DBG(pm8001_ha
, pm8001_printk("pm8001_task_exec device \n "));
384 spin_lock_irqsave(&pm8001_ha
->lock
, flags
);
387 pm8001_dev
= dev
->lldd_dev
;
388 if (DEV_IS_GONE(pm8001_dev
)) {
390 PM8001_IO_DBG(pm8001_ha
,
391 pm8001_printk("device %d not ready.\n",
392 pm8001_dev
->device_id
));
394 PM8001_IO_DBG(pm8001_ha
,
395 pm8001_printk("device %016llx not "
396 "ready.\n", SAS_ADDR(dev
->sas_addr
)));
401 port
= &pm8001_ha
->port
[sas_find_local_port_id(dev
)];
402 if (!port
->port_attached
) {
403 if (sas_protocol_ata(t
->task_proto
)) {
404 struct task_status_struct
*ts
= &t
->task_status
;
405 ts
->resp
= SAS_TASK_UNDELIVERED
;
406 ts
->stat
= SAS_PHY_DOWN
;
408 spin_unlock_irqrestore(&pm8001_ha
->lock
, flags
);
409 spin_unlock_irqrestore(dev
->sata_dev
.ap
->lock
,
412 spin_lock_irqsave(dev
->sata_dev
.ap
->lock
,
414 spin_lock_irqsave(&pm8001_ha
->lock
, flags
);
416 t
= list_entry(t
->list
.next
,
417 struct sas_task
, list
);
420 struct task_status_struct
*ts
= &t
->task_status
;
421 ts
->resp
= SAS_TASK_UNDELIVERED
;
422 ts
->stat
= SAS_PHY_DOWN
;
425 t
= list_entry(t
->list
.next
,
426 struct sas_task
, list
);
430 rc
= pm8001_tag_alloc(pm8001_ha
, &tag
);
433 ccb
= &pm8001_ha
->ccb_info
[tag
];
435 if (!sas_protocol_ata(t
->task_proto
)) {
436 if (t
->num_scatter
) {
437 n_elem
= dma_map_sg(pm8001_ha
->dev
,
447 n_elem
= t
->num_scatter
;
451 ccb
->n_elem
= n_elem
;
454 switch (t
->task_proto
) {
455 case SAS_PROTOCOL_SMP
:
456 rc
= pm8001_task_prep_smp(pm8001_ha
, ccb
);
458 case SAS_PROTOCOL_SSP
:
460 rc
= pm8001_task_prep_ssp_tm(pm8001_ha
,
463 rc
= pm8001_task_prep_ssp(pm8001_ha
, ccb
);
465 case SAS_PROTOCOL_SATA
:
466 case SAS_PROTOCOL_STP
:
467 case SAS_PROTOCOL_SATA
| SAS_PROTOCOL_STP
:
468 rc
= pm8001_task_prep_ata(pm8001_ha
, ccb
);
471 dev_printk(KERN_ERR
, pm8001_ha
->dev
,
472 "unknown sas_task proto: 0x%x\n",
479 PM8001_IO_DBG(pm8001_ha
,
480 pm8001_printk("rc is %x\n", rc
));
483 /* TODO: select normal or high priority */
484 spin_lock(&t
->task_state_lock
);
485 t
->task_state_flags
|= SAS_TASK_AT_INITIATOR
;
486 spin_unlock(&t
->task_state_lock
);
487 pm8001_dev
->running_req
++;
489 t
= list_entry(t
->list
.next
, struct sas_task
, list
);
495 pm8001_tag_free(pm8001_ha
, tag
);
497 dev_printk(KERN_ERR
, pm8001_ha
->dev
, "pm8001 exec failed[%d]!\n", rc
);
498 if (!sas_protocol_ata(t
->task_proto
))
500 dma_unmap_sg(pm8001_ha
->dev
, t
->scatter
, n_elem
,
503 spin_unlock_irqrestore(&pm8001_ha
->lock
, flags
);
508 * pm8001_queue_command - register for upper layer used, all IO commands sent
509 * to HBA are from this interface.
510 * @task: the task to be execute.
511 * @num: if can_queue great than 1, the task can be queued up. for SMP task,
512 * we always execute one one time
513 * @gfp_flags: gfp_flags
515 int pm8001_queue_command(struct sas_task
*task
, const int num
,
518 return pm8001_task_exec(task
, num
, gfp_flags
, 0, NULL
);
521 void pm8001_ccb_free(struct pm8001_hba_info
*pm8001_ha
, u32 ccb_idx
)
523 pm8001_tag_clear(pm8001_ha
, ccb_idx
);
527 * pm8001_ccb_task_free - free the sg for ssp and smp command, free the ccb.
528 * @pm8001_ha: our hba card information
529 * @ccb: the ccb which attached to ssp task
530 * @task: the task to be free.
531 * @ccb_idx: ccb index.
533 void pm8001_ccb_task_free(struct pm8001_hba_info
*pm8001_ha
,
534 struct sas_task
*task
, struct pm8001_ccb_info
*ccb
, u32 ccb_idx
)
538 if (!sas_protocol_ata(task
->task_proto
))
540 dma_unmap_sg(pm8001_ha
->dev
, task
->scatter
,
541 task
->num_scatter
, task
->data_dir
);
543 switch (task
->task_proto
) {
544 case SAS_PROTOCOL_SMP
:
545 dma_unmap_sg(pm8001_ha
->dev
, &task
->smp_task
.smp_resp
, 1,
547 dma_unmap_sg(pm8001_ha
->dev
, &task
->smp_task
.smp_req
, 1,
551 case SAS_PROTOCOL_SATA
:
552 case SAS_PROTOCOL_STP
:
553 case SAS_PROTOCOL_SSP
:
558 task
->lldd_task
= NULL
;
560 ccb
->ccb_tag
= 0xFFFFFFFF;
561 pm8001_ccb_free(pm8001_ha
, ccb_idx
);
565 * pm8001_alloc_dev - find a empty pm8001_device
566 * @pm8001_ha: our hba card information
568 struct pm8001_device
*pm8001_alloc_dev(struct pm8001_hba_info
*pm8001_ha
)
571 for (dev
= 0; dev
< PM8001_MAX_DEVICES
; dev
++) {
572 if (pm8001_ha
->devices
[dev
].dev_type
== NO_DEVICE
) {
573 pm8001_ha
->devices
[dev
].id
= dev
;
574 return &pm8001_ha
->devices
[dev
];
577 if (dev
== PM8001_MAX_DEVICES
) {
578 PM8001_FAIL_DBG(pm8001_ha
,
579 pm8001_printk("max support %d devices, ignore ..\n",
580 PM8001_MAX_DEVICES
));
585 static void pm8001_free_dev(struct pm8001_device
*pm8001_dev
)
587 u32 id
= pm8001_dev
->id
;
588 memset(pm8001_dev
, 0, sizeof(*pm8001_dev
));
590 pm8001_dev
->dev_type
= NO_DEVICE
;
591 pm8001_dev
->device_id
= PM8001_MAX_DEVICES
;
592 pm8001_dev
->sas_device
= NULL
;
596 * pm8001_dev_found_notify - libsas notify a device is found.
597 * @dev: the device structure which sas layer used.
599 * when libsas find a sas domain device, it should tell the LLDD that
600 * device is found, and then LLDD register this device to HBA firmware
601 * by the command "OPC_INB_REG_DEV", after that the HBA will assign a
602 * device ID(according to device's sas address) and returned it to LLDD. From
603 * now on, we communicate with HBA FW with the device ID which HBA assigned
604 * rather than sas address. it is the necessary step for our HBA but it is
605 * the optional for other HBA driver.
607 static int pm8001_dev_found_notify(struct domain_device
*dev
)
609 unsigned long flags
= 0;
611 struct pm8001_hba_info
*pm8001_ha
= NULL
;
612 struct domain_device
*parent_dev
= dev
->parent
;
613 struct pm8001_device
*pm8001_device
;
614 DECLARE_COMPLETION_ONSTACK(completion
);
616 pm8001_ha
= pm8001_find_ha_by_dev(dev
);
617 spin_lock_irqsave(&pm8001_ha
->lock
, flags
);
619 pm8001_device
= pm8001_alloc_dev(pm8001_ha
);
620 if (!pm8001_device
) {
624 pm8001_device
->sas_device
= dev
;
625 dev
->lldd_dev
= pm8001_device
;
626 pm8001_device
->dev_type
= dev
->dev_type
;
627 pm8001_device
->dcompletion
= &completion
;
628 if (parent_dev
&& DEV_IS_EXPANDER(parent_dev
->dev_type
)) {
631 for (phy_id
= 0; phy_id
< parent_dev
->ex_dev
.num_phys
;
633 phy
= &parent_dev
->ex_dev
.ex_phy
[phy_id
];
634 if (SAS_ADDR(phy
->attached_sas_addr
)
635 == SAS_ADDR(dev
->sas_addr
)) {
636 pm8001_device
->attached_phy
= phy_id
;
640 if (phy_id
== parent_dev
->ex_dev
.num_phys
) {
641 PM8001_FAIL_DBG(pm8001_ha
,
642 pm8001_printk("Error: no attached dev:%016llx"
643 " at ex:%016llx.\n", SAS_ADDR(dev
->sas_addr
),
644 SAS_ADDR(parent_dev
->sas_addr
)));
648 if (dev
->dev_type
== SATA_DEV
) {
649 pm8001_device
->attached_phy
=
650 dev
->rphy
->identify
.phy_identifier
;
651 flag
= 1; /* directly sata*/
653 } /*register this device to HBA*/
654 PM8001_DISC_DBG(pm8001_ha
, pm8001_printk("Found device \n"));
655 PM8001_CHIP_DISP
->reg_dev_req(pm8001_ha
, pm8001_device
, flag
);
656 spin_unlock_irqrestore(&pm8001_ha
->lock
, flags
);
657 wait_for_completion(&completion
);
658 if (dev
->dev_type
== SAS_END_DEV
)
660 pm8001_ha
->flags
|= PM8001F_RUN_TIME
;
663 spin_unlock_irqrestore(&pm8001_ha
->lock
, flags
);
667 int pm8001_dev_found(struct domain_device
*dev
)
669 return pm8001_dev_found_notify(dev
);
673 * pm8001_alloc_task - allocate a task structure for TMF
675 static struct sas_task
*pm8001_alloc_task(void)
677 struct sas_task
*task
= kzalloc(sizeof(*task
), GFP_KERNEL
);
679 INIT_LIST_HEAD(&task
->list
);
680 spin_lock_init(&task
->task_state_lock
);
681 task
->task_state_flags
= SAS_TASK_STATE_PENDING
;
682 init_timer(&task
->timer
);
683 init_completion(&task
->completion
);
688 static void pm8001_free_task(struct sas_task
*task
)
691 BUG_ON(!list_empty(&task
->list
));
696 static void pm8001_task_done(struct sas_task
*task
)
698 if (!del_timer(&task
->timer
))
700 complete(&task
->completion
);
703 static void pm8001_tmf_timedout(unsigned long data
)
705 struct sas_task
*task
= (struct sas_task
*)data
;
707 task
->task_state_flags
|= SAS_TASK_STATE_ABORTED
;
708 complete(&task
->completion
);
711 #define PM8001_TASK_TIMEOUT 20
713 * pm8001_exec_internal_tmf_task - execute some task management commands.
714 * @dev: the wanted device.
715 * @tmf: which task management wanted to be take.
716 * @para_len: para_len.
717 * @parameter: ssp task parameter.
719 * when errors or exception happened, we may want to do something, for example
720 * abort the issued task which result in this execption, it is done by calling
721 * this function, note it is also with the task execute interface.
723 static int pm8001_exec_internal_tmf_task(struct domain_device
*dev
,
724 void *parameter
, u32 para_len
, struct pm8001_tmf_task
*tmf
)
727 struct sas_task
*task
= NULL
;
728 struct pm8001_hba_info
*pm8001_ha
= pm8001_find_ha_by_dev(dev
);
730 for (retry
= 0; retry
< 3; retry
++) {
731 task
= pm8001_alloc_task();
736 task
->task_proto
= dev
->tproto
;
737 memcpy(&task
->ssp_task
, parameter
, para_len
);
738 task
->task_done
= pm8001_task_done
;
739 task
->timer
.data
= (unsigned long)task
;
740 task
->timer
.function
= pm8001_tmf_timedout
;
741 task
->timer
.expires
= jiffies
+ PM8001_TASK_TIMEOUT
*HZ
;
742 add_timer(&task
->timer
);
744 res
= pm8001_task_exec(task
, 1, GFP_KERNEL
, 1, tmf
);
747 del_timer(&task
->timer
);
748 PM8001_FAIL_DBG(pm8001_ha
,
749 pm8001_printk("Executing internal task "
753 wait_for_completion(&task
->completion
);
754 res
= -TMF_RESP_FUNC_FAILED
;
755 /* Even TMF timed out, return direct. */
756 if ((task
->task_state_flags
& SAS_TASK_STATE_ABORTED
)) {
757 if (!(task
->task_state_flags
& SAS_TASK_STATE_DONE
)) {
758 PM8001_FAIL_DBG(pm8001_ha
,
759 pm8001_printk("TMF task[%x]timeout.\n",
765 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
766 task
->task_status
.stat
== SAM_GOOD
) {
767 res
= TMF_RESP_FUNC_COMPLETE
;
771 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
772 task
->task_status
.stat
== SAS_DATA_UNDERRUN
) {
773 /* no error, but return the number of bytes of
775 res
= task
->task_status
.residual
;
779 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
780 task
->task_status
.stat
== SAS_DATA_OVERRUN
) {
781 PM8001_FAIL_DBG(pm8001_ha
,
782 pm8001_printk("Blocked task error.\n"));
786 PM8001_EH_DBG(pm8001_ha
,
787 pm8001_printk(" Task to dev %016llx response:"
788 "0x%x status 0x%x\n",
789 SAS_ADDR(dev
->sas_addr
),
790 task
->task_status
.resp
,
791 task
->task_status
.stat
));
792 pm8001_free_task(task
);
797 BUG_ON(retry
== 3 && task
!= NULL
);
799 pm8001_free_task(task
);
804 pm8001_exec_internal_task_abort(struct pm8001_hba_info
*pm8001_ha
,
805 struct pm8001_device
*pm8001_dev
, struct domain_device
*dev
, u32 flag
,
810 struct pm8001_ccb_info
*ccb
;
811 struct sas_task
*task
= NULL
;
813 for (retry
= 0; retry
< 3; retry
++) {
814 task
= pm8001_alloc_task();
819 task
->task_proto
= dev
->tproto
;
820 task
->task_done
= pm8001_task_done
;
821 task
->timer
.data
= (unsigned long)task
;
822 task
->timer
.function
= pm8001_tmf_timedout
;
823 task
->timer
.expires
= jiffies
+ PM8001_TASK_TIMEOUT
* HZ
;
824 add_timer(&task
->timer
);
826 res
= pm8001_tag_alloc(pm8001_ha
, &ccb_tag
);
829 ccb
= &pm8001_ha
->ccb_info
[ccb_tag
];
830 ccb
->device
= pm8001_dev
;
831 ccb
->ccb_tag
= ccb_tag
;
834 res
= PM8001_CHIP_DISP
->task_abort(pm8001_ha
,
835 pm8001_dev
, flag
, task_tag
, ccb_tag
);
838 del_timer(&task
->timer
);
839 PM8001_FAIL_DBG(pm8001_ha
,
840 pm8001_printk("Executing internal task "
844 wait_for_completion(&task
->completion
);
845 res
= TMF_RESP_FUNC_FAILED
;
846 /* Even TMF timed out, return direct. */
847 if ((task
->task_state_flags
& SAS_TASK_STATE_ABORTED
)) {
848 if (!(task
->task_state_flags
& SAS_TASK_STATE_DONE
)) {
849 PM8001_FAIL_DBG(pm8001_ha
,
850 pm8001_printk("TMF task timeout.\n"));
855 if (task
->task_status
.resp
== SAS_TASK_COMPLETE
&&
856 task
->task_status
.stat
== SAM_GOOD
) {
857 res
= TMF_RESP_FUNC_COMPLETE
;
861 PM8001_EH_DBG(pm8001_ha
,
862 pm8001_printk(" Task to dev %016llx response: "
863 "0x%x status 0x%x\n",
864 SAS_ADDR(dev
->sas_addr
),
865 task
->task_status
.resp
,
866 task
->task_status
.stat
));
867 pm8001_free_task(task
);
872 BUG_ON(retry
== 3 && task
!= NULL
);
874 pm8001_free_task(task
);
879 * pm8001_dev_gone_notify - see the comments for "pm8001_dev_found_notify"
880 * @dev: the device structure which sas layer used.
882 static void pm8001_dev_gone_notify(struct domain_device
*dev
)
884 unsigned long flags
= 0;
886 struct pm8001_hba_info
*pm8001_ha
;
887 struct pm8001_device
*pm8001_dev
= dev
->lldd_dev
;
888 u32 device_id
= pm8001_dev
->device_id
;
889 pm8001_ha
= pm8001_find_ha_by_dev(dev
);
890 spin_lock_irqsave(&pm8001_ha
->lock
, flags
);
891 pm8001_tag_alloc(pm8001_ha
, &tag
);
893 PM8001_DISC_DBG(pm8001_ha
,
894 pm8001_printk("found dev[%d:%x] is gone.\n",
895 pm8001_dev
->device_id
, pm8001_dev
->dev_type
));
896 if (pm8001_dev
->running_req
) {
897 spin_unlock_irqrestore(&pm8001_ha
->lock
, flags
);
898 pm8001_exec_internal_task_abort(pm8001_ha
, pm8001_dev
,
900 spin_lock_irqsave(&pm8001_ha
->lock
, flags
);
902 PM8001_CHIP_DISP
->dereg_dev_req(pm8001_ha
, device_id
);
903 pm8001_free_dev(pm8001_dev
);
905 PM8001_DISC_DBG(pm8001_ha
,
906 pm8001_printk("Found dev has gone.\n"));
908 dev
->lldd_dev
= NULL
;
909 spin_unlock_irqrestore(&pm8001_ha
->lock
, flags
);
912 void pm8001_dev_gone(struct domain_device
*dev
)
914 pm8001_dev_gone_notify(dev
);
917 static int pm8001_issue_ssp_tmf(struct domain_device
*dev
,
918 u8
*lun
, struct pm8001_tmf_task
*tmf
)
920 struct sas_ssp_task ssp_task
;
921 if (!(dev
->tproto
& SAS_PROTOCOL_SSP
))
922 return TMF_RESP_FUNC_ESUPP
;
924 strncpy((u8
*)&ssp_task
.LUN
, lun
, 8);
925 return pm8001_exec_internal_tmf_task(dev
, &ssp_task
, sizeof(ssp_task
),
930 * Standard mandates link reset for ATA (type 0) and hard reset for
931 * SSP (type 1) , only for RECOVERY
933 int pm8001_I_T_nexus_reset(struct domain_device
*dev
)
935 int rc
= TMF_RESP_FUNC_FAILED
;
936 struct pm8001_device
*pm8001_dev
;
937 struct pm8001_hba_info
*pm8001_ha
;
939 if (!dev
|| !dev
->lldd_dev
)
942 pm8001_dev
= dev
->lldd_dev
;
943 pm8001_ha
= pm8001_find_ha_by_dev(dev
);
944 phy
= sas_find_local_phy(dev
);
946 if (dev_is_sata(dev
)) {
947 DECLARE_COMPLETION_ONSTACK(completion_setstate
);
948 if (scsi_is_sas_phy_local(phy
))
950 rc
= sas_phy_reset(phy
, 1);
952 rc
= pm8001_exec_internal_task_abort(pm8001_ha
, pm8001_dev
,
954 pm8001_dev
->setds_completion
= &completion_setstate
;
955 rc
= PM8001_CHIP_DISP
->set_dev_state_req(pm8001_ha
,
957 wait_for_completion(&completion_setstate
);
959 rc
= sas_phy_reset(phy
, 1);
962 PM8001_EH_DBG(pm8001_ha
, pm8001_printk(" for device[%x]:rc=%d\n",
963 pm8001_dev
->device_id
, rc
));
967 /* mandatory SAM-3, the task reset the specified LUN*/
968 int pm8001_lu_reset(struct domain_device
*dev
, u8
*lun
)
970 int rc
= TMF_RESP_FUNC_FAILED
;
971 struct pm8001_tmf_task tmf_task
;
972 struct pm8001_device
*pm8001_dev
= dev
->lldd_dev
;
973 struct pm8001_hba_info
*pm8001_ha
= pm8001_find_ha_by_dev(dev
);
974 if (dev_is_sata(dev
)) {
975 struct sas_phy
*phy
= sas_find_local_phy(dev
);
976 rc
= pm8001_exec_internal_task_abort(pm8001_ha
, pm8001_dev
,
978 rc
= sas_phy_reset(phy
, 1);
979 rc
= PM8001_CHIP_DISP
->set_dev_state_req(pm8001_ha
,
983 tmf_task
.tmf
= TMF_LU_RESET
;
984 rc
= pm8001_issue_ssp_tmf(dev
, lun
, &tmf_task
);
986 /* If failed, fall-through I_T_Nexus reset */
987 PM8001_EH_DBG(pm8001_ha
, pm8001_printk("for device[%x]:rc=%d\n",
988 pm8001_dev
->device_id
, rc
));
993 int pm8001_query_task(struct sas_task
*task
)
995 u32 tag
= 0xdeadbeef;
998 struct pm8001_tmf_task tmf_task
;
999 int rc
= TMF_RESP_FUNC_FAILED
;
1000 if (unlikely(!task
|| !task
->lldd_task
|| !task
->dev
))
1003 if (task
->task_proto
& SAS_PROTOCOL_SSP
) {
1004 struct scsi_cmnd
*cmnd
= task
->uldd_task
;
1005 struct domain_device
*dev
= task
->dev
;
1006 struct pm8001_hba_info
*pm8001_ha
=
1007 pm8001_find_ha_by_dev(dev
);
1009 int_to_scsilun(cmnd
->device
->lun
, &lun
);
1010 rc
= pm8001_find_tag(task
, &tag
);
1012 rc
= TMF_RESP_FUNC_FAILED
;
1015 PM8001_EH_DBG(pm8001_ha
, pm8001_printk("Query:["));
1016 for (i
= 0; i
< 16; i
++)
1017 printk(KERN_INFO
"%02x ", cmnd
->cmnd
[i
]);
1018 printk(KERN_INFO
"]\n");
1019 tmf_task
.tmf
= TMF_QUERY_TASK
;
1020 tmf_task
.tag_of_task_to_be_managed
= tag
;
1022 rc
= pm8001_issue_ssp_tmf(dev
, lun
.scsi_lun
, &tmf_task
);
1024 /* The task is still in Lun, release it then */
1025 case TMF_RESP_FUNC_SUCC
:
1026 PM8001_EH_DBG(pm8001_ha
,
1027 pm8001_printk("The task is still in Lun \n"));
1028 /* The task is not in Lun or failed, reset the phy */
1029 case TMF_RESP_FUNC_FAILED
:
1030 case TMF_RESP_FUNC_COMPLETE
:
1031 PM8001_EH_DBG(pm8001_ha
,
1032 pm8001_printk("The task is not in Lun or failed,"
1033 " reset the phy \n"));
1037 pm8001_printk(":rc= %d\n", rc
);
1041 /* mandatory SAM-3, still need free task/ccb info, abord the specified task */
1042 int pm8001_abort_task(struct sas_task
*task
)
1044 unsigned long flags
;
1045 u32 tag
= 0xdeadbeef;
1047 struct domain_device
*dev
;
1048 struct pm8001_hba_info
*pm8001_ha
= NULL
;
1049 struct pm8001_ccb_info
*ccb
;
1050 struct scsi_lun lun
;
1051 struct pm8001_device
*pm8001_dev
;
1052 struct pm8001_tmf_task tmf_task
;
1053 int rc
= TMF_RESP_FUNC_FAILED
;
1054 if (unlikely(!task
|| !task
->lldd_task
|| !task
->dev
))
1056 spin_lock_irqsave(&task
->task_state_lock
, flags
);
1057 if (task
->task_state_flags
& SAS_TASK_STATE_DONE
) {
1058 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
1059 rc
= TMF_RESP_FUNC_COMPLETE
;
1062 spin_unlock_irqrestore(&task
->task_state_lock
, flags
);
1063 if (task
->task_proto
& SAS_PROTOCOL_SSP
) {
1064 struct scsi_cmnd
*cmnd
= task
->uldd_task
;
1066 ccb
= task
->lldd_task
;
1067 pm8001_dev
= dev
->lldd_dev
;
1068 pm8001_ha
= pm8001_find_ha_by_dev(dev
);
1069 int_to_scsilun(cmnd
->device
->lun
, &lun
);
1070 rc
= pm8001_find_tag(task
, &tag
);
1072 printk(KERN_INFO
"No such tag in %s\n", __func__
);
1073 rc
= TMF_RESP_FUNC_FAILED
;
1076 device_id
= pm8001_dev
->device_id
;
1077 PM8001_EH_DBG(pm8001_ha
,
1078 pm8001_printk("abort io to deviceid= %d\n", device_id
));
1079 tmf_task
.tmf
= TMF_ABORT_TASK
;
1080 tmf_task
.tag_of_task_to_be_managed
= tag
;
1081 rc
= pm8001_issue_ssp_tmf(dev
, lun
.scsi_lun
, &tmf_task
);
1082 pm8001_exec_internal_task_abort(pm8001_ha
, pm8001_dev
,
1083 pm8001_dev
->sas_device
, 0, tag
);
1084 } else if (task
->task_proto
& SAS_PROTOCOL_SATA
||
1085 task
->task_proto
& SAS_PROTOCOL_STP
) {
1087 pm8001_dev
= dev
->lldd_dev
;
1088 pm8001_ha
= pm8001_find_ha_by_dev(dev
);
1089 rc
= pm8001_find_tag(task
, &tag
);
1091 printk(KERN_INFO
"No such tag in %s\n", __func__
);
1092 rc
= TMF_RESP_FUNC_FAILED
;
1095 rc
= pm8001_exec_internal_task_abort(pm8001_ha
, pm8001_dev
,
1096 pm8001_dev
->sas_device
, 0, tag
);
1097 } else if (task
->task_proto
& SAS_PROTOCOL_SMP
) {
1100 pm8001_dev
= dev
->lldd_dev
;
1101 pm8001_ha
= pm8001_find_ha_by_dev(dev
);
1102 rc
= pm8001_find_tag(task
, &tag
);
1104 printk(KERN_INFO
"No such tag in %s\n", __func__
);
1105 rc
= TMF_RESP_FUNC_FAILED
;
1108 rc
= pm8001_exec_internal_task_abort(pm8001_ha
, pm8001_dev
,
1109 pm8001_dev
->sas_device
, 0, tag
);
1113 if (rc
!= TMF_RESP_FUNC_COMPLETE
)
1114 pm8001_printk("rc= %d\n", rc
);
1118 int pm8001_abort_task_set(struct domain_device
*dev
, u8
*lun
)
1120 int rc
= TMF_RESP_FUNC_FAILED
;
1121 struct pm8001_tmf_task tmf_task
;
1123 tmf_task
.tmf
= TMF_ABORT_TASK_SET
;
1124 rc
= pm8001_issue_ssp_tmf(dev
, lun
, &tmf_task
);
1128 int pm8001_clear_aca(struct domain_device
*dev
, u8
*lun
)
1130 int rc
= TMF_RESP_FUNC_FAILED
;
1131 struct pm8001_tmf_task tmf_task
;
1133 tmf_task
.tmf
= TMF_CLEAR_ACA
;
1134 rc
= pm8001_issue_ssp_tmf(dev
, lun
, &tmf_task
);
1139 int pm8001_clear_task_set(struct domain_device
*dev
, u8
*lun
)
1141 int rc
= TMF_RESP_FUNC_FAILED
;
1142 struct pm8001_tmf_task tmf_task
;
1143 struct pm8001_device
*pm8001_dev
= dev
->lldd_dev
;
1144 struct pm8001_hba_info
*pm8001_ha
= pm8001_find_ha_by_dev(dev
);
1146 PM8001_EH_DBG(pm8001_ha
,
1147 pm8001_printk("I_T_L_Q clear task set[%x]\n",
1148 pm8001_dev
->device_id
));
1149 tmf_task
.tmf
= TMF_CLEAR_TASK_SET
;
1150 rc
= pm8001_issue_ssp_tmf(dev
, lun
, &tmf_task
);