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[SCSI] pm8001: deficient responses to IO_XFER_ERROR_BREAK and IO_XFER_OPEN_RETRY_TIMEOUT
[mirror_ubuntu-bionic-kernel.git] / drivers / scsi / pm8001 / pm8001_sas.c
CommitLineData
dbf9bfe6 1/*
2 * PMC-Sierra SPC 8001 SAS/SATA based host adapters driver
3 *
4 * Copyright (c) 2008-2009 USI Co., Ltd.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
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.
21 *
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.
25 *
26 * NO WARRANTY
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.
38 *
39 */
40
5a0e3ad6 41#include <linux/slab.h>
dbf9bfe6 42#include "pm8001_sas.h"
43
44/**
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
48 */
49static int pm8001_find_tag(struct sas_task *task, u32 *tag)
50{
51 if (task->lldd_task) {
52 struct pm8001_ccb_info *ccb;
53 ccb = task->lldd_task;
54 *tag = ccb->ccb_tag;
55 return 1;
56 }
57 return 0;
58}
59
60/**
61 * pm8001_tag_clear - clear the tags bitmap
62 * @pm8001_ha: our hba struct
63 * @tag: the found tag associated with the task
64 */
65static void pm8001_tag_clear(struct pm8001_hba_info *pm8001_ha, u32 tag)
66{
67 void *bitmap = pm8001_ha->tags;
68 clear_bit(tag, bitmap);
69}
70
71static void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag)
72{
73 pm8001_tag_clear(pm8001_ha, tag);
74}
75
76static void pm8001_tag_set(struct pm8001_hba_info *pm8001_ha, u32 tag)
77{
78 void *bitmap = pm8001_ha->tags;
79 set_bit(tag, bitmap);
80}
81
82/**
83 * pm8001_tag_alloc - allocate a empty tag for task used.
84 * @pm8001_ha: our hba struct
85 * @tag_out: the found empty tag .
86 */
87inline int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out)
88{
89 unsigned int index, tag;
90 void *bitmap = pm8001_ha->tags;
91
92 index = find_first_zero_bit(bitmap, pm8001_ha->tags_num);
93 tag = index;
94 if (tag >= pm8001_ha->tags_num)
95 return -SAS_QUEUE_FULL;
96 pm8001_tag_set(pm8001_ha, tag);
97 *tag_out = tag;
98 return 0;
99}
100
101void pm8001_tag_init(struct pm8001_hba_info *pm8001_ha)
102{
103 int i;
104 for (i = 0; i < pm8001_ha->tags_num; ++i)
105 pm8001_tag_clear(pm8001_ha, i);
106}
107
108 /**
109 * pm8001_mem_alloc - allocate memory for pm8001.
110 * @pdev: pci device.
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.
115 */
116int 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)
119{
120 caddr_t mem_virt_alloc;
121 dma_addr_t mem_dma_handle;
122 u64 phys_align;
123 u64 align_offset = 0;
124 if (align)
125 align_offset = (dma_addr_t)align - 1;
126 mem_virt_alloc =
127 pci_alloc_consistent(pdev, mem_size + align, &mem_dma_handle);
128 if (!mem_virt_alloc) {
129 pm8001_printk("memory allocation error\n");
130 return -1;
131 }
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);
138 return 0;
139}
140/**
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.
144 */
145static
146struct pm8001_hba_info *pm8001_find_ha_by_dev(struct domain_device *dev)
147{
148 struct sas_ha_struct *sha = dev->port->ha;
149 struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
150 return pm8001_ha;
151}
152
153/**
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.
161 */
162int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
163 void *funcdata)
164{
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);
d95d0001 169 unsigned long flags;
dbf9bfe6 170 pm8001_ha = sas_phy->ha->lldd_ha;
171 pm8001_ha->phy[phy_id].enable_completion = &completion;
172 switch (func) {
173 case PHY_FUNC_SET_LINK_RATE:
174 rates = funcdata;
175 if (rates->minimum_linkrate) {
176 pm8001_ha->phy[phy_id].minimum_linkrate =
177 rates->minimum_linkrate;
178 }
179 if (rates->maximum_linkrate) {
180 pm8001_ha->phy[phy_id].maximum_linkrate =
181 rates->maximum_linkrate;
182 }
183 if (pm8001_ha->phy[phy_id].phy_state == 0) {
184 PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
185 wait_for_completion(&completion);
186 }
187 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
188 PHY_LINK_RESET);
189 break;
190 case PHY_FUNC_HARD_RESET:
191 if (pm8001_ha->phy[phy_id].phy_state == 0) {
192 PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
193 wait_for_completion(&completion);
194 }
195 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
196 PHY_HARD_RESET);
197 break;
198 case PHY_FUNC_LINK_RESET:
199 if (pm8001_ha->phy[phy_id].phy_state == 0) {
200 PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
201 wait_for_completion(&completion);
202 }
203 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
204 PHY_LINK_RESET);
205 break;
206 case PHY_FUNC_RELEASE_SPINUP_HOLD:
207 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
208 PHY_LINK_RESET);
209 break;
210 case PHY_FUNC_DISABLE:
211 PM8001_CHIP_DISP->phy_stop_req(pm8001_ha, phy_id);
212 break;
d95d0001
MS		 213 case PHY_FUNC_GET_EVENTS:
214 spin_lock_irqsave(&pm8001_ha->lock, flags);
215 if (-1 == pm8001_bar4_shift(pm8001_ha,
216 (phy_id < 4) ? 0x30000 : 0x40000)) {
217 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
218 return -EINVAL;
219 }
220 {
221 struct sas_phy *phy = sas_phy->phy;
222 uint32_t *qp = (uint32_t *)(((char *)
223 pm8001_ha->io_mem[2].memvirtaddr)
224 + 0x1034 + (0x4000 * (phy_id & 3)));
225
226 phy->invalid_dword_count = qp[0];
227 phy->running_disparity_error_count = qp[1];
228 phy->loss_of_dword_sync_count = qp[3];
229 phy->phy_reset_problem_count = qp[4];
230 }
231 pm8001_bar4_shift(pm8001_ha, 0);
232 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
233 return 0;
dbf9bfe6 234 default:
d95d0001 235 rc = -EOPNOTSUPP;
dbf9bfe6 236 }
237 msleep(300);
238 return rc;
239}
240
dbf9bfe6 241/**
242 * pm8001_scan_start - we should enable all HBA phys by sending the phy_start
243 * command to HBA.
244 * @shost: the scsi host data.
245 */
246void pm8001_scan_start(struct Scsi_Host *shost)
247{
248 int i;
249 struct pm8001_hba_info *pm8001_ha;
250 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
251 pm8001_ha = sha->lldd_ha;
d0b68041 252 PM8001_CHIP_DISP->sas_re_init_req(pm8001_ha);
dbf9bfe6 253 for (i = 0; i < pm8001_ha->chip->n_phy; ++i)
254 PM8001_CHIP_DISP->phy_start_req(pm8001_ha, i);
255}
256
257int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time)
258{
259 /* give the phy enabling interrupt event time to come in (1s
260 * is empirically about all it takes) */
261 if (time < HZ)
262 return 0;
263 /* Wait for discovery to finish */
264 scsi_flush_work(shost);
265 return 1;
266}
267
268/**
269 * pm8001_task_prep_smp - the dispatcher function, prepare data for smp task
270 * @pm8001_ha: our hba card information
271 * @ccb: the ccb which attached to smp task
272 */
273static int pm8001_task_prep_smp(struct pm8001_hba_info *pm8001_ha,
274 struct pm8001_ccb_info *ccb)
275{
276 return PM8001_CHIP_DISP->smp_req(pm8001_ha, ccb);
277}
278
279u32 pm8001_get_ncq_tag(struct sas_task *task, u32 *tag)
280{
281 struct ata_queued_cmd *qc = task->uldd_task;
282 if (qc) {
283 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
284 qc->tf.command == ATA_CMD_FPDMA_READ) {
285 *tag = qc->tag;
286 return 1;
287 }
288 }
289 return 0;
290}
291
292/**
293 * pm8001_task_prep_ata - the dispatcher function, prepare data for sata task
294 * @pm8001_ha: our hba card information
295 * @ccb: the ccb which attached to sata task
296 */
297static int pm8001_task_prep_ata(struct pm8001_hba_info *pm8001_ha,
298 struct pm8001_ccb_info *ccb)
299{
300 return PM8001_CHIP_DISP->sata_req(pm8001_ha, ccb);
301}
302
303/**
304 * pm8001_task_prep_ssp_tm - the dispatcher function, prepare task management data
305 * @pm8001_ha: our hba card information
306 * @ccb: the ccb which attached to TM
307 * @tmf: the task management IU
308 */
309static int pm8001_task_prep_ssp_tm(struct pm8001_hba_info *pm8001_ha,
310 struct pm8001_ccb_info *ccb, struct pm8001_tmf_task *tmf)
311{
312 return PM8001_CHIP_DISP->ssp_tm_req(pm8001_ha, ccb, tmf);
313}
314
315/**
316 * pm8001_task_prep_ssp - the dispatcher function,prepare ssp data for ssp task
317 * @pm8001_ha: our hba card information
318 * @ccb: the ccb which attached to ssp task
319 */
320static int pm8001_task_prep_ssp(struct pm8001_hba_info *pm8001_ha,
321 struct pm8001_ccb_info *ccb)
322{
323 return PM8001_CHIP_DISP->ssp_io_req(pm8001_ha, ccb);
324}
11e16364 325
1cc943ae 326 /* Find the local port id that's attached to this device */
327static int sas_find_local_port_id(struct domain_device *dev)
328{
329 struct domain_device *pdev = dev->parent;
330
331 /* Directly attached device */
332 if (!pdev)
333 return dev->port->id;
334 while (pdev) {
335 struct domain_device *pdev_p = pdev->parent;
336 if (!pdev_p)
337 return pdev->port->id;
338 pdev = pdev->parent;
339 }
340 return 0;
341}
342
dbf9bfe6 343/**
97ee2088 344 * pm8001_task_exec - queue the task(ssp, smp && ata) to the hardware.
dbf9bfe6 345 * @task: the task to be execute.
346 * @num: if can_queue great than 1, the task can be queued up. for SMP task,
347 * we always execute one one time.
348 * @gfp_flags: gfp_flags.
97ee2088 349 * @is_tmf: if it is task management task.
dbf9bfe6 350 * @tmf: the task management IU
351 */
352#define DEV_IS_GONE(pm8001_dev) \
353 ((!pm8001_dev || (pm8001_dev->dev_type == NO_DEVICE)))
354static int pm8001_task_exec(struct sas_task *task, const int num,
355 gfp_t gfp_flags, int is_tmf, struct pm8001_tmf_task *tmf)
356{
357 struct domain_device *dev = task->dev;
358 struct pm8001_hba_info *pm8001_ha;
359 struct pm8001_device *pm8001_dev;
1cc943ae 360 struct pm8001_port *port = NULL;
dbf9bfe6 361 struct sas_task *t = task;
362 struct pm8001_ccb_info *ccb;
363 u32 tag = 0xdeadbeef, rc, n_elem = 0;
364 u32 n = num;
1cc943ae 365 unsigned long flags = 0, flags_libsas = 0;
dbf9bfe6 366
367 if (!dev->port) {
368 struct task_status_struct *tsm = &t->task_status;
369 tsm->resp = SAS_TASK_UNDELIVERED;
370 tsm->stat = SAS_PHY_DOWN;
371 if (dev->dev_type != SATA_DEV)
372 t->task_done(t);
373 return 0;
374 }
375 pm8001_ha = pm8001_find_ha_by_dev(task->dev);
376 PM8001_IO_DBG(pm8001_ha, pm8001_printk("pm8001_task_exec device \n "));
377 spin_lock_irqsave(&pm8001_ha->lock, flags);
378 do {
379 dev = t->dev;
380 pm8001_dev = dev->lldd_dev;
1cc943ae 381 port = &pm8001_ha->port[sas_find_local_port_id(dev)];
b90b378a 382 if (DEV_IS_GONE(pm8001_dev) || !port->port_attached) {
1cc943ae 383 if (sas_protocol_ata(t->task_proto)) {
384 struct task_status_struct *ts = &t->task_status;
385 ts->resp = SAS_TASK_UNDELIVERED;
386 ts->stat = SAS_PHY_DOWN;
387
388 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
389 spin_unlock_irqrestore(dev->sata_dev.ap->lock,
390 flags_libsas);
391 t->task_done(t);
392 spin_lock_irqsave(dev->sata_dev.ap->lock,
393 flags_libsas);
394 spin_lock_irqsave(&pm8001_ha->lock, flags);
395 if (n > 1)
396 t = list_entry(t->list.next,
397 struct sas_task, list);
398 continue;
399 } else {
400 struct task_status_struct *ts = &t->task_status;
401 ts->resp = SAS_TASK_UNDELIVERED;
402 ts->stat = SAS_PHY_DOWN;
403 t->task_done(t);
404 if (n > 1)
405 t = list_entry(t->list.next,
406 struct sas_task, list);
407 continue;
408 }
409 }
dbf9bfe6 410 rc = pm8001_tag_alloc(pm8001_ha, &tag);
411 if (rc)
412 goto err_out;
413 ccb = &pm8001_ha->ccb_info[tag];
414
415 if (!sas_protocol_ata(t->task_proto)) {
416 if (t->num_scatter) {
417 n_elem = dma_map_sg(pm8001_ha->dev,
418 t->scatter,
419 t->num_scatter,
420 t->data_dir);
421 if (!n_elem) {
422 rc = -ENOMEM;
97ee2088 423 goto err_out_tag;
dbf9bfe6 424 }
425 }
426 } else {
427 n_elem = t->num_scatter;
428 }
429
97ee2088 430 t->lldd_task = ccb;
dbf9bfe6 431 ccb->n_elem = n_elem;
432 ccb->ccb_tag = tag;
433 ccb->task = t;
434 switch (t->task_proto) {
435 case SAS_PROTOCOL_SMP:
436 rc = pm8001_task_prep_smp(pm8001_ha, ccb);
437 break;
438 case SAS_PROTOCOL_SSP:
439 if (is_tmf)
440 rc = pm8001_task_prep_ssp_tm(pm8001_ha,
441 ccb, tmf);
442 else
443 rc = pm8001_task_prep_ssp(pm8001_ha, ccb);
444 break;
445 case SAS_PROTOCOL_SATA:
446 case SAS_PROTOCOL_STP:
447 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
448 rc = pm8001_task_prep_ata(pm8001_ha, ccb);
449 break;
450 default:
451 dev_printk(KERN_ERR, pm8001_ha->dev,
452 "unknown sas_task proto: 0x%x\n",
453 t->task_proto);
454 rc = -EINVAL;
455 break;
456 }
457
458 if (rc) {
459 PM8001_IO_DBG(pm8001_ha,
460 pm8001_printk("rc is %x\n", rc));
461 goto err_out_tag;
462 }
dbf9bfe6 463 /* TODO: select normal or high priority */
464 spin_lock(&t->task_state_lock);
465 t->task_state_flags |= SAS_TASK_AT_INITIATOR;
466 spin_unlock(&t->task_state_lock);
467 pm8001_dev->running_req++;
468 if (n > 1)
469 t = list_entry(t->list.next, struct sas_task, list);
470 } while (--n);
471 rc = 0;
472 goto out_done;
473
474err_out_tag:
475 pm8001_tag_free(pm8001_ha, tag);
476err_out:
477 dev_printk(KERN_ERR, pm8001_ha->dev, "pm8001 exec failed[%d]!\n", rc);
478 if (!sas_protocol_ata(t->task_proto))
479 if (n_elem)
480 dma_unmap_sg(pm8001_ha->dev, t->scatter, n_elem,
481 t->data_dir);
482out_done:
483 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
484 return rc;
485}
486
487/**
488 * pm8001_queue_command - register for upper layer used, all IO commands sent
489 * to HBA are from this interface.
490 * @task: the task to be execute.
491 * @num: if can_queue great than 1, the task can be queued up. for SMP task,
492 * we always execute one one time
493 * @gfp_flags: gfp_flags
494 */
495int pm8001_queue_command(struct sas_task *task, const int num,
496 gfp_t gfp_flags)
497{
498 return pm8001_task_exec(task, num, gfp_flags, 0, NULL);
499}
500
501void pm8001_ccb_free(struct pm8001_hba_info *pm8001_ha, u32 ccb_idx)
502{
503 pm8001_tag_clear(pm8001_ha, ccb_idx);
504}
505
506/**
507 * pm8001_ccb_task_free - free the sg for ssp and smp command, free the ccb.
508 * @pm8001_ha: our hba card information
509 * @ccb: the ccb which attached to ssp task
510 * @task: the task to be free.
511 * @ccb_idx: ccb index.
512 */
513void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha,
514 struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx)
515{
516 if (!ccb->task)
517 return;
518 if (!sas_protocol_ata(task->task_proto))
519 if (ccb->n_elem)
520 dma_unmap_sg(pm8001_ha->dev, task->scatter,
521 task->num_scatter, task->data_dir);
522
523 switch (task->task_proto) {
524 case SAS_PROTOCOL_SMP:
525 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_resp, 1,
526 PCI_DMA_FROMDEVICE);
527 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_req, 1,
528 PCI_DMA_TODEVICE);
529 break;
530
531 case SAS_PROTOCOL_SATA:
532 case SAS_PROTOCOL_STP:
533 case SAS_PROTOCOL_SSP:
534 default:
535 /* do nothing */
536 break;
537 }
538 task->lldd_task = NULL;
539 ccb->task = NULL;
540 ccb->ccb_tag = 0xFFFFFFFF;
5954d738 541 ccb->open_retry = 0;
dbf9bfe6 542 pm8001_ccb_free(pm8001_ha, ccb_idx);
543}
544
545 /**
97ee2088 546 * pm8001_alloc_dev - find a empty pm8001_device
dbf9bfe6 547 * @pm8001_ha: our hba card information
548 */
549struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha)
550{
551 u32 dev;
552 for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) {
553 if (pm8001_ha->devices[dev].dev_type == NO_DEVICE) {
554 pm8001_ha->devices[dev].id = dev;
555 return &pm8001_ha->devices[dev];
556 }
557 }
558 if (dev == PM8001_MAX_DEVICES) {
559 PM8001_FAIL_DBG(pm8001_ha,
560 pm8001_printk("max support %d devices, ignore ..\n",
561 PM8001_MAX_DEVICES));
562 }
563 return NULL;
564}
565
566static void pm8001_free_dev(struct pm8001_device *pm8001_dev)
567{
568 u32 id = pm8001_dev->id;
569 memset(pm8001_dev, 0, sizeof(*pm8001_dev));
570 pm8001_dev->id = id;
571 pm8001_dev->dev_type = NO_DEVICE;
572 pm8001_dev->device_id = PM8001_MAX_DEVICES;
573 pm8001_dev->sas_device = NULL;
574}
575
576/**
97ee2088 577 * pm8001_dev_found_notify - libsas notify a device is found.
578 * @dev: the device structure which sas layer used.
579 *
580 * when libsas find a sas domain device, it should tell the LLDD that
581 * device is found, and then LLDD register this device to HBA firmware
582 * by the command "OPC_INB_REG_DEV", after that the HBA will assign a
583 * device ID(according to device's sas address) and returned it to LLDD. From
dbf9bfe6 584 * now on, we communicate with HBA FW with the device ID which HBA assigned
3ad2f3fb 585 * rather than sas address. it is the necessary step for our HBA but it is
dbf9bfe6 586 * the optional for other HBA driver.
dbf9bfe6 587 */
588static int pm8001_dev_found_notify(struct domain_device *dev)
589{
590 unsigned long flags = 0;
591 int res = 0;
592 struct pm8001_hba_info *pm8001_ha = NULL;
593 struct domain_device *parent_dev = dev->parent;
594 struct pm8001_device *pm8001_device;
595 DECLARE_COMPLETION_ONSTACK(completion);
596 u32 flag = 0;
597 pm8001_ha = pm8001_find_ha_by_dev(dev);
598 spin_lock_irqsave(&pm8001_ha->lock, flags);
599
600 pm8001_device = pm8001_alloc_dev(pm8001_ha);
dbf9bfe6 601 if (!pm8001_device) {
602 res = -1;
603 goto found_out;
604 }
f01f4e6a 605 pm8001_device->sas_device = dev;
dbf9bfe6 606 dev->lldd_dev = pm8001_device;
607 pm8001_device->dev_type = dev->dev_type;
608 pm8001_device->dcompletion = &completion;
609 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
610 int phy_id;
611 struct ex_phy *phy;
612 for (phy_id = 0; phy_id < parent_dev->ex_dev.num_phys;
613 phy_id++) {
614 phy = &parent_dev->ex_dev.ex_phy[phy_id];
615 if (SAS_ADDR(phy->attached_sas_addr)
616 == SAS_ADDR(dev->sas_addr)) {
617 pm8001_device->attached_phy = phy_id;
618 break;
619 }
620 }
621 if (phy_id == parent_dev->ex_dev.num_phys) {
622 PM8001_FAIL_DBG(pm8001_ha,
623 pm8001_printk("Error: no attached dev:%016llx"
624 " at ex:%016llx.\n", SAS_ADDR(dev->sas_addr),
625 SAS_ADDR(parent_dev->sas_addr)));
626 res = -1;
627 }
628 } else {
629 if (dev->dev_type == SATA_DEV) {
630 pm8001_device->attached_phy =
631 dev->rphy->identify.phy_identifier;
632 flag = 1; /* directly sata*/
633 }
634 } /*register this device to HBA*/
6fbc7692 635 PM8001_DISC_DBG(pm8001_ha, pm8001_printk("Found device\n"));
dbf9bfe6 636 PM8001_CHIP_DISP->reg_dev_req(pm8001_ha, pm8001_device, flag);
637 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
638 wait_for_completion(&completion);
639 if (dev->dev_type == SAS_END_DEV)
640 msleep(50);
5c4fb76a 641 pm8001_ha->flags = PM8001F_RUN_TIME;
dbf9bfe6 642 return 0;
643found_out:
644 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
645 return res;
646}
647
648int pm8001_dev_found(struct domain_device *dev)
649{
650 return pm8001_dev_found_notify(dev);
651}
652
dbf9bfe6 653static void pm8001_task_done(struct sas_task *task)
654{
655 if (!del_timer(&task->timer))
656 return;
657 complete(&task->completion);
658}
659
660static void pm8001_tmf_timedout(unsigned long data)
661{
662 struct sas_task *task = (struct sas_task *)data;
663
664 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
665 complete(&task->completion);
666}
667
668#define PM8001_TASK_TIMEOUT 20
669/**
97ee2088 670 * pm8001_exec_internal_tmf_task - execute some task management commands.
dbf9bfe6 671 * @dev: the wanted device.
672 * @tmf: which task management wanted to be take.
673 * @para_len: para_len.
674 * @parameter: ssp task parameter.
97ee2088 675 *
676 * when errors or exception happened, we may want to do something, for example
677 * abort the issued task which result in this execption, it is done by calling
678 * this function, note it is also with the task execute interface.
dbf9bfe6 679 */
680static int pm8001_exec_internal_tmf_task(struct domain_device *dev,
681 void *parameter, u32 para_len, struct pm8001_tmf_task *tmf)
682{
683 int res, retry;
684 struct sas_task *task = NULL;
685 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
686
687 for (retry = 0; retry < 3; retry++) {
4fcf812c 688 task = sas_alloc_task(GFP_KERNEL);
dbf9bfe6 689 if (!task)
690 return -ENOMEM;
691
692 task->dev = dev;
693 task->task_proto = dev->tproto;
694 memcpy(&task->ssp_task, parameter, para_len);
695 task->task_done = pm8001_task_done;
696 task->timer.data = (unsigned long)task;
697 task->timer.function = pm8001_tmf_timedout;
698 task->timer.expires = jiffies + PM8001_TASK_TIMEOUT*HZ;
699 add_timer(&task->timer);
700
701 res = pm8001_task_exec(task, 1, GFP_KERNEL, 1, tmf);
702
703 if (res) {
704 del_timer(&task->timer);
705 PM8001_FAIL_DBG(pm8001_ha,
706 pm8001_printk("Executing internal task "
707 "failed\n"));
708 goto ex_err;
709 }
710 wait_for_completion(&task->completion);
711 res = -TMF_RESP_FUNC_FAILED;
712 /* Even TMF timed out, return direct. */
713 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
714 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
715 PM8001_FAIL_DBG(pm8001_ha,
716 pm8001_printk("TMF task[%x]timeout.\n",
717 tmf->tmf));
718 goto ex_err;
719 }
720 }
721
722 if (task->task_status.resp == SAS_TASK_COMPLETE &&
df64d3ca 723 task->task_status.stat == SAM_STAT_GOOD) {
dbf9bfe6 724 res = TMF_RESP_FUNC_COMPLETE;
725 break;
726 }
727
728 if (task->task_status.resp == SAS_TASK_COMPLETE &&
729 task->task_status.stat == SAS_DATA_UNDERRUN) {
730 /* no error, but return the number of bytes of
731 * underrun */
732 res = task->task_status.residual;
733 break;
734 }
735
736 if (task->task_status.resp == SAS_TASK_COMPLETE &&
737 task->task_status.stat == SAS_DATA_OVERRUN) {
738 PM8001_FAIL_DBG(pm8001_ha,
739 pm8001_printk("Blocked task error.\n"));
740 res = -EMSGSIZE;
741 break;
742 } else {
97ee2088 743 PM8001_EH_DBG(pm8001_ha,
744 pm8001_printk(" Task to dev %016llx response:"
745 "0x%x status 0x%x\n",
dbf9bfe6 746 SAS_ADDR(dev->sas_addr),
747 task->task_status.resp,
748 task->task_status.stat));
4fcf812c 749 sas_free_task(task);
dbf9bfe6 750 task = NULL;
751 }
752 }
753ex_err:
754 BUG_ON(retry == 3 && task != NULL);
4fcf812c 755 sas_free_task(task);
dbf9bfe6 756 return res;
757}
758
759static int
760pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha,
761 struct pm8001_device *pm8001_dev, struct domain_device *dev, u32 flag,
762 u32 task_tag)
763{
764 int res, retry;
97ee2088 765 u32 ccb_tag;
dbf9bfe6 766 struct pm8001_ccb_info *ccb;
767 struct sas_task *task = NULL;
768
769 for (retry = 0; retry < 3; retry++) {
4fcf812c 770 task = sas_alloc_task(GFP_KERNEL);
dbf9bfe6 771 if (!task)
772 return -ENOMEM;
773
774 task->dev = dev;
775 task->task_proto = dev->tproto;
776 task->task_done = pm8001_task_done;
777 task->timer.data = (unsigned long)task;
778 task->timer.function = pm8001_tmf_timedout;
83e73329 779 task->timer.expires = jiffies + PM8001_TASK_TIMEOUT * HZ;
dbf9bfe6 780 add_timer(&task->timer);
781
97ee2088 782 res = pm8001_tag_alloc(pm8001_ha, &ccb_tag);
783 if (res)
784 return res;
dbf9bfe6 785 ccb = &pm8001_ha->ccb_info[ccb_tag];
786 ccb->device = pm8001_dev;
787 ccb->ccb_tag = ccb_tag;
788 ccb->task = task;
789
790 res = PM8001_CHIP_DISP->task_abort(pm8001_ha,
791 pm8001_dev, flag, task_tag, ccb_tag);
792
793 if (res) {
794 del_timer(&task->timer);
795 PM8001_FAIL_DBG(pm8001_ha,
796 pm8001_printk("Executing internal task "
797 "failed\n"));
798 goto ex_err;
799 }
800 wait_for_completion(&task->completion);
801 res = TMF_RESP_FUNC_FAILED;
802 /* Even TMF timed out, return direct. */
803 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
804 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
805 PM8001_FAIL_DBG(pm8001_ha,
806 pm8001_printk("TMF task timeout.\n"));
807 goto ex_err;
808 }
809 }
810
811 if (task->task_status.resp == SAS_TASK_COMPLETE &&
df64d3ca 812 task->task_status.stat == SAM_STAT_GOOD) {
dbf9bfe6 813 res = TMF_RESP_FUNC_COMPLETE;
814 break;
815
816 } else {
97ee2088 817 PM8001_EH_DBG(pm8001_ha,
dbf9bfe6 818 pm8001_printk(" Task to dev %016llx response: "
819 "0x%x status 0x%x\n",
820 SAS_ADDR(dev->sas_addr),
821 task->task_status.resp,
822 task->task_status.stat));
4fcf812c 823 sas_free_task(task);
dbf9bfe6 824 task = NULL;
825 }
826 }
827ex_err:
828 BUG_ON(retry == 3 && task != NULL);
4fcf812c 829 sas_free_task(task);
dbf9bfe6 830 return res;
831}
832
833/**
834 * pm8001_dev_gone_notify - see the comments for "pm8001_dev_found_notify"
835 * @dev: the device structure which sas layer used.
836 */
837static void pm8001_dev_gone_notify(struct domain_device *dev)
838{
839 unsigned long flags = 0;
840 u32 tag;
841 struct pm8001_hba_info *pm8001_ha;
842 struct pm8001_device *pm8001_dev = dev->lldd_dev;
2471b894 843
dbf9bfe6 844 pm8001_ha = pm8001_find_ha_by_dev(dev);
845 spin_lock_irqsave(&pm8001_ha->lock, flags);
846 pm8001_tag_alloc(pm8001_ha, &tag);
847 if (pm8001_dev) {
2471b894
DC		 848 u32 device_id = pm8001_dev->device_id;
849
dbf9bfe6 850 PM8001_DISC_DBG(pm8001_ha,
851 pm8001_printk("found dev[%d:%x] is gone.\n",
852 pm8001_dev->device_id, pm8001_dev->dev_type));
853 if (pm8001_dev->running_req) {
854 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
855 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
856 dev, 1, 0);
857 spin_lock_irqsave(&pm8001_ha->lock, flags);
858 }
859 PM8001_CHIP_DISP->dereg_dev_req(pm8001_ha, device_id);
860 pm8001_free_dev(pm8001_dev);
861 } else {
862 PM8001_DISC_DBG(pm8001_ha,
863 pm8001_printk("Found dev has gone.\n"));
864 }
865 dev->lldd_dev = NULL;
866 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
867}
868
869void pm8001_dev_gone(struct domain_device *dev)
870{
871 pm8001_dev_gone_notify(dev);
872}
873
874static int pm8001_issue_ssp_tmf(struct domain_device *dev,
875 u8 *lun, struct pm8001_tmf_task *tmf)
876{
877 struct sas_ssp_task ssp_task;
878 if (!(dev->tproto & SAS_PROTOCOL_SSP))
879 return TMF_RESP_FUNC_ESUPP;
880
881 strncpy((u8 *)&ssp_task.LUN, lun, 8);
882 return pm8001_exec_internal_tmf_task(dev, &ssp_task, sizeof(ssp_task),
883 tmf);
884}
885
5954d738
MS		 886/* retry commands by ha, by task and/or by device */
887void pm8001_open_reject_retry(
888 struct pm8001_hba_info *pm8001_ha,
889 struct sas_task *task_to_close,
890 struct pm8001_device *device_to_close)
891{
892 int i;
893 unsigned long flags;
894
895 if (pm8001_ha == NULL)
896 return;
897
898 spin_lock_irqsave(&pm8001_ha->lock, flags);
899
900 for (i = 0; i < PM8001_MAX_CCB; i++) {
901 struct sas_task *task;
902 struct task_status_struct *ts;
903 struct pm8001_device *pm8001_dev;
904 unsigned long flags1;
905 u32 tag;
906 struct pm8001_ccb_info *ccb = &pm8001_ha->ccb_info[i];
907
908 pm8001_dev = ccb->device;
909 if (!pm8001_dev || (pm8001_dev->dev_type == NO_DEVICE))
910 continue;
911 if (!device_to_close) {
912 uintptr_t d = (uintptr_t)pm8001_dev
913 - (uintptr_t)&pm8001_ha->devices;
914 if (((d % sizeof(*pm8001_dev)) != 0)
915 || ((d / sizeof(*pm8001_dev)) >= PM8001_MAX_DEVICES))
916 continue;
917 } else if (pm8001_dev != device_to_close)
918 continue;
919 tag = ccb->ccb_tag;
920 if (!tag || (tag == 0xFFFFFFFF))
921 continue;
922 task = ccb->task;
923 if (!task || !task->task_done)
924 continue;
925 if (task_to_close && (task != task_to_close))
926 continue;
927 ts = &task->task_status;
928 ts->resp = SAS_TASK_COMPLETE;
929 /* Force the midlayer to retry */
930 ts->stat = SAS_OPEN_REJECT;
931 ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
932 if (pm8001_dev)
933 pm8001_dev->running_req--;
934 spin_lock_irqsave(&task->task_state_lock, flags1);
935 task->task_state_flags &= ~SAS_TASK_STATE_PENDING;
936 task->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
937 task->task_state_flags |= SAS_TASK_STATE_DONE;
938 if (unlikely((task->task_state_flags
939 & SAS_TASK_STATE_ABORTED))) {
940 spin_unlock_irqrestore(&task->task_state_lock,
941 flags1);
942 pm8001_ccb_task_free(pm8001_ha, task, ccb, tag);
943 } else {
944 spin_unlock_irqrestore(&task->task_state_lock,
945 flags1);
946 pm8001_ccb_task_free(pm8001_ha, task, ccb, tag);
947 mb();/* in order to force CPU ordering */
948 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
949 task->task_done(task);
950 spin_lock_irqsave(&pm8001_ha->lock, flags);
951 }
952 }
953
954 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
955}
956
dbf9bfe6 957/**
958 * Standard mandates link reset for ATA (type 0) and hard reset for
959 * SSP (type 1) , only for RECOVERY
960 */
961int pm8001_I_T_nexus_reset(struct domain_device *dev)
962{
963 int rc = TMF_RESP_FUNC_FAILED;
964 struct pm8001_device *pm8001_dev;
965 struct pm8001_hba_info *pm8001_ha;
966 struct sas_phy *phy;
967 if (!dev || !dev->lldd_dev)
968 return -1;
969
970 pm8001_dev = dev->lldd_dev;
971 pm8001_ha = pm8001_find_ha_by_dev(dev);
972 phy = sas_find_local_phy(dev);
973
974 if (dev_is_sata(dev)) {
975 DECLARE_COMPLETION_ONSTACK(completion_setstate);
8257ec80 976 if (scsi_is_sas_phy_local(phy))
977 return 0;
dbf9bfe6 978 rc = sas_phy_reset(phy, 1);
979 msleep(2000);
980 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
981 dev, 1, 0);
982 pm8001_dev->setds_completion = &completion_setstate;
983 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
984 pm8001_dev, 0x01);
985 wait_for_completion(&completion_setstate);
986 } else{
987 rc = sas_phy_reset(phy, 1);
988 msleep(2000);
989 }
990 PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n",
991 pm8001_dev->device_id, rc));
992 return rc;
993}
994
995/* mandatory SAM-3, the task reset the specified LUN*/
996int pm8001_lu_reset(struct domain_device *dev, u8 *lun)
997{
998 int rc = TMF_RESP_FUNC_FAILED;
999 struct pm8001_tmf_task tmf_task;
1000 struct pm8001_device *pm8001_dev = dev->lldd_dev;
1001 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
1002 if (dev_is_sata(dev)) {
1003 struct sas_phy *phy = sas_find_local_phy(dev);
1004 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
1005 dev, 1, 0);
1006 rc = sas_phy_reset(phy, 1);
1007 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
1008 pm8001_dev, 0x01);
1009 msleep(2000);
1010 } else {
1011 tmf_task.tmf = TMF_LU_RESET;
1012 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1013 }
1014 /* If failed, fall-through I_T_Nexus reset */
1015 PM8001_EH_DBG(pm8001_ha, pm8001_printk("for device[%x]:rc=%d\n",
1016 pm8001_dev->device_id, rc));
1017 return rc;
1018}
1019
1020/* optional SAM-3 */
1021int pm8001_query_task(struct sas_task *task)
1022{
1023 u32 tag = 0xdeadbeef;
1024 int i = 0;
1025 struct scsi_lun lun;
1026 struct pm8001_tmf_task tmf_task;
1027 int rc = TMF_RESP_FUNC_FAILED;
1028 if (unlikely(!task || !task->lldd_task || !task->dev))
1029 return rc;
1030
1031 if (task->task_proto & SAS_PROTOCOL_SSP) {
1032 struct scsi_cmnd *cmnd = task->uldd_task;
1033 struct domain_device *dev = task->dev;
1034 struct pm8001_hba_info *pm8001_ha =
1035 pm8001_find_ha_by_dev(dev);
1036
1037 int_to_scsilun(cmnd->device->lun, &lun);
1038 rc = pm8001_find_tag(task, &tag);
1039 if (rc == 0) {
1040 rc = TMF_RESP_FUNC_FAILED;
1041 return rc;
1042 }
1043 PM8001_EH_DBG(pm8001_ha, pm8001_printk("Query:["));
1044 for (i = 0; i < 16; i++)
1045 printk(KERN_INFO "%02x ", cmnd->cmnd[i]);
1046 printk(KERN_INFO "]\n");
1047 tmf_task.tmf = TMF_QUERY_TASK;
1048 tmf_task.tag_of_task_to_be_managed = tag;
1049
1050 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1051 switch (rc) {
1052 /* The task is still in Lun, release it then */
1053 case TMF_RESP_FUNC_SUCC:
1054 PM8001_EH_DBG(pm8001_ha,
6fbc7692
MS		 1055 pm8001_printk("The task is still in Lun\n"));
1056 break;
dbf9bfe6 1057 /* The task is not in Lun or failed, reset the phy */
1058 case TMF_RESP_FUNC_FAILED:
1059 case TMF_RESP_FUNC_COMPLETE:
1060 PM8001_EH_DBG(pm8001_ha,
1061 pm8001_printk("The task is not in Lun or failed,"
6fbc7692 1062 " reset the phy\n"));
dbf9bfe6 1063 break;
1064 }
1065 }
1066 pm8001_printk(":rc= %d\n", rc);
1067 return rc;
1068}
1069
1070/* mandatory SAM-3, still need free task/ccb info, abord the specified task */
1071int pm8001_abort_task(struct sas_task *task)
1072{
1073 unsigned long flags;
1074 u32 tag = 0xdeadbeef;
1075 u32 device_id;
1076 struct domain_device *dev ;
1077 struct pm8001_hba_info *pm8001_ha = NULL;
1078 struct pm8001_ccb_info *ccb;
1079 struct scsi_lun lun;
1080 struct pm8001_device *pm8001_dev;
1081 struct pm8001_tmf_task tmf_task;
1082 int rc = TMF_RESP_FUNC_FAILED;
1083 if (unlikely(!task || !task->lldd_task || !task->dev))
1084 return rc;
1085 spin_lock_irqsave(&task->task_state_lock, flags);
1086 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1087 spin_unlock_irqrestore(&task->task_state_lock, flags);
1088 rc = TMF_RESP_FUNC_COMPLETE;
1089 goto out;
1090 }
1091 spin_unlock_irqrestore(&task->task_state_lock, flags);
1092 if (task->task_proto & SAS_PROTOCOL_SSP) {
1093 struct scsi_cmnd *cmnd = task->uldd_task;
1094 dev = task->dev;
1095 ccb = task->lldd_task;
1096 pm8001_dev = dev->lldd_dev;
1097 pm8001_ha = pm8001_find_ha_by_dev(dev);
1098 int_to_scsilun(cmnd->device->lun, &lun);
1099 rc = pm8001_find_tag(task, &tag);
1100 if (rc == 0) {
1101 printk(KERN_INFO "No such tag in %s\n", __func__);
1102 rc = TMF_RESP_FUNC_FAILED;
1103 return rc;
1104 }
1105 device_id = pm8001_dev->device_id;
1106 PM8001_EH_DBG(pm8001_ha,
97ee2088 1107 pm8001_printk("abort io to deviceid= %d\n", device_id));
1108 tmf_task.tmf = TMF_ABORT_TASK;
dbf9bfe6 1109 tmf_task.tag_of_task_to_be_managed = tag;
1110 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
97ee2088 1111 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
dbf9bfe6 1112 pm8001_dev->sas_device, 0, tag);
1113 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1114 task->task_proto & SAS_PROTOCOL_STP) {
1115 dev = task->dev;
1116 pm8001_dev = dev->lldd_dev;
1117 pm8001_ha = pm8001_find_ha_by_dev(dev);
1118 rc = pm8001_find_tag(task, &tag);
1119 if (rc == 0) {
1120 printk(KERN_INFO "No such tag in %s\n", __func__);
1121 rc = TMF_RESP_FUNC_FAILED;
1122 return rc;
1123 }
1124 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1125 pm8001_dev->sas_device, 0, tag);
1126 } else if (task->task_proto & SAS_PROTOCOL_SMP) {
1127 /* SMP */
1128 dev = task->dev;
1129 pm8001_dev = dev->lldd_dev;
1130 pm8001_ha = pm8001_find_ha_by_dev(dev);
1131 rc = pm8001_find_tag(task, &tag);
1132 if (rc == 0) {
1133 printk(KERN_INFO "No such tag in %s\n", __func__);
1134 rc = TMF_RESP_FUNC_FAILED;
1135 return rc;
1136 }
1137 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1138 pm8001_dev->sas_device, 0, tag);
1139
1140 }
1141out:
1142 if (rc != TMF_RESP_FUNC_COMPLETE)
1143 pm8001_printk("rc= %d\n", rc);
1144 return rc;
1145}
1146
1147int pm8001_abort_task_set(struct domain_device *dev, u8 *lun)
1148{
1149 int rc = TMF_RESP_FUNC_FAILED;
1150 struct pm8001_tmf_task tmf_task;
1151
1152 tmf_task.tmf = TMF_ABORT_TASK_SET;
1153 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1154 return rc;
1155}
1156
1157int pm8001_clear_aca(struct domain_device *dev, u8 *lun)
1158{
1159 int rc = TMF_RESP_FUNC_FAILED;
1160 struct pm8001_tmf_task tmf_task;
1161
1162 tmf_task.tmf = TMF_CLEAR_ACA;
1163 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1164
1165 return rc;
1166}
1167
1168int pm8001_clear_task_set(struct domain_device *dev, u8 *lun)
1169{
1170 int rc = TMF_RESP_FUNC_FAILED;
1171 struct pm8001_tmf_task tmf_task;
1172 struct pm8001_device *pm8001_dev = dev->lldd_dev;
1173 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
1174
1175 PM8001_EH_DBG(pm8001_ha,
1176 pm8001_printk("I_T_L_Q clear task set[%x]\n",
1177 pm8001_dev->device_id));
1178 tmf_task.tmf = TMF_CLEAR_TASK_SET;
1179 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1180 return rc;
1181}
1182
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