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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
41#include <linux/slab.h>
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);
169 pm8001_ha = sas_phy->ha->lldd_ha;
170 pm8001_ha->phy[phy_id].enable_completion = &completion;
171 switch (func) {
172 case PHY_FUNC_SET_LINK_RATE:
173 rates = funcdata;
174 if (rates->minimum_linkrate) {
175 pm8001_ha->phy[phy_id].minimum_linkrate =
176 rates->minimum_linkrate;
177 }
178 if (rates->maximum_linkrate) {
179 pm8001_ha->phy[phy_id].maximum_linkrate =
180 rates->maximum_linkrate;
181 }
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);
185 }
186 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
187 PHY_LINK_RESET);
188 break;
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);
193 }
194 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
195 PHY_HARD_RESET);
196 break;
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);
201 }
202 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
203 PHY_LINK_RESET);
204 break;
205 case PHY_FUNC_RELEASE_SPINUP_HOLD:
206 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
207 PHY_LINK_RESET);
208 break;
209 case PHY_FUNC_DISABLE:
210 PM8001_CHIP_DISP->phy_stop_req(pm8001_ha, phy_id);
211 break;
212 default:
213 rc = -EOPNOTSUPP;
214 }
215 msleep(300);
216 return rc;
217}
218
219int pm8001_slave_alloc(struct scsi_device *scsi_dev)
220{
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
225 */
226 if (scsi_dev->lun > 0)
227 return -ENXIO;
228 scsi_dev->tagged_supported = 1;
229 }
230 return sas_slave_alloc(scsi_dev);
231}
232
233/**
234 * pm8001_scan_start - we should enable all HBA phys by sending the phy_start
235 * command to HBA.
236 * @shost: the scsi host data.
237 */
238void pm8001_scan_start(struct Scsi_Host *shost)
239{
240 int i;
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);
247}
248
249int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time)
250{
251 /* give the phy enabling interrupt event time to come in (1s
252 * is empirically about all it takes) */
253 if (time < HZ)
254 return 0;
255 /* Wait for discovery to finish */
256 scsi_flush_work(shost);
257 return 1;
258}
259
260/**
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
264 */
265static int pm8001_task_prep_smp(struct pm8001_hba_info *pm8001_ha,
266 struct pm8001_ccb_info *ccb)
267{
268 return PM8001_CHIP_DISP->smp_req(pm8001_ha, ccb);
269}
270
271u32 pm8001_get_ncq_tag(struct sas_task *task, u32 *tag)
272{
273 struct ata_queued_cmd *qc = task->uldd_task;
274 if (qc) {
275 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
276 qc->tf.command == ATA_CMD_FPDMA_READ) {
277 *tag = qc->tag;
278 return 1;
279 }
280 }
281 return 0;
282}
283
284/**
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
288 */
289static int pm8001_task_prep_ata(struct pm8001_hba_info *pm8001_ha,
290 struct pm8001_ccb_info *ccb)
291{
292 return PM8001_CHIP_DISP->sata_req(pm8001_ha, ccb);
293}
294
295/**
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
300 */
301static int pm8001_task_prep_ssp_tm(struct pm8001_hba_info *pm8001_ha,
302 struct pm8001_ccb_info *ccb, struct pm8001_tmf_task *tmf)
303{
304 return PM8001_CHIP_DISP->ssp_tm_req(pm8001_ha, ccb, tmf);
305}
306
307/**
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
311 */
312static int pm8001_task_prep_ssp(struct pm8001_hba_info *pm8001_ha,
313 struct pm8001_ccb_info *ccb)
314{
315 return PM8001_CHIP_DISP->ssp_io_req(pm8001_ha, ccb);
316}
317int pm8001_slave_configure(struct scsi_device *sdev)
318{
319 struct domain_device *dev = sdev_to_domain_dev(sdev);
320 int ret = sas_slave_configure(sdev);
321 if (ret)
322 return ret;
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);
329 #endif
330 }
331 return 0;
332}
333 /* Find the local port id that's attached to this device */
334static int sas_find_local_port_id(struct domain_device *dev)
335{
336 struct domain_device *pdev = dev->parent;
337
338 /* Directly attached device */
339 if (!pdev)
340 return dev->port->id;
341 while (pdev) {
342 struct domain_device *pdev_p = pdev->parent;
343 if (!pdev_p)
344 return pdev->port->id;
345 pdev = pdev->parent;
346 }
347 return 0;
348}
349
350/**
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
358 */
359#define DEV_IS_GONE(pm8001_dev) \
360 ((!pm8001_dev || (pm8001_dev->dev_type == NO_DEVICE)))
361static int pm8001_task_exec(struct sas_task *task, const int num,
362 gfp_t gfp_flags, int is_tmf, struct pm8001_tmf_task *tmf)
363{
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;
371 u32 n = num;
372 unsigned long flags = 0, flags_libsas = 0;
373
374 if (!dev->port) {
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)
379 t->task_done(t);
380 return 0;
381 }
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);
385 do {
386 dev = t->dev;
387 pm8001_dev = dev->lldd_dev;
388 if (DEV_IS_GONE(pm8001_dev)) {
389 if (pm8001_dev) {
390 PM8001_IO_DBG(pm8001_ha,
391 pm8001_printk("device %d not ready.\n",
392 pm8001_dev->device_id));
393 } else {
394 PM8001_IO_DBG(pm8001_ha,
395 pm8001_printk("device %016llx not "
396 "ready.\n", SAS_ADDR(dev->sas_addr)));
397 }
398 rc = SAS_PHY_DOWN;
399 goto out_done;
400 }
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;
407
408 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
409 spin_unlock_irqrestore(dev->sata_dev.ap->lock,
410 flags_libsas);
411 t->task_done(t);
412 spin_lock_irqsave(dev->sata_dev.ap->lock,
413 flags_libsas);
414 spin_lock_irqsave(&pm8001_ha->lock, flags);
415 if (n > 1)
416 t = list_entry(t->list.next,
417 struct sas_task, list);
418 continue;
419 } else {
420 struct task_status_struct *ts = &t->task_status;
421 ts->resp = SAS_TASK_UNDELIVERED;
422 ts->stat = SAS_PHY_DOWN;
423 t->task_done(t);
424 if (n > 1)
425 t = list_entry(t->list.next,
426 struct sas_task, list);
427 continue;
428 }
429 }
430 rc = pm8001_tag_alloc(pm8001_ha, &tag);
431 if (rc)
432 goto err_out;
433 ccb = &pm8001_ha->ccb_info[tag];
434
435 if (!sas_protocol_ata(t->task_proto)) {
436 if (t->num_scatter) {
437 n_elem = dma_map_sg(pm8001_ha->dev,
438 t->scatter,
439 t->num_scatter,
440 t->data_dir);
441 if (!n_elem) {
442 rc = -ENOMEM;
443 goto err_out_tag;
444 }
445 }
446 } else {
447 n_elem = t->num_scatter;
448 }
449
450 t->lldd_task = ccb;
451 ccb->n_elem = n_elem;
452 ccb->ccb_tag = tag;
453 ccb->task = t;
454 switch (t->task_proto) {
455 case SAS_PROTOCOL_SMP:
456 rc = pm8001_task_prep_smp(pm8001_ha, ccb);
457 break;
458 case SAS_PROTOCOL_SSP:
459 if (is_tmf)
460 rc = pm8001_task_prep_ssp_tm(pm8001_ha,
461 ccb, tmf);
462 else
463 rc = pm8001_task_prep_ssp(pm8001_ha, ccb);
464 break;
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);
469 break;
470 default:
471 dev_printk(KERN_ERR, pm8001_ha->dev,
472 "unknown sas_task proto: 0x%x\n",
473 t->task_proto);
474 rc = -EINVAL;
475 break;
476 }
477
478 if (rc) {
479 PM8001_IO_DBG(pm8001_ha,
480 pm8001_printk("rc is %x\n", rc));
481 goto err_out_tag;
482 }
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++;
488 if (n > 1)
489 t = list_entry(t->list.next, struct sas_task, list);
490 } while (--n);
491 rc = 0;
492 goto out_done;
493
494err_out_tag:
495 pm8001_tag_free(pm8001_ha, tag);
496err_out:
497 dev_printk(KERN_ERR, pm8001_ha->dev, "pm8001 exec failed[%d]!\n", rc);
498 if (!sas_protocol_ata(t->task_proto))
499 if (n_elem)
500 dma_unmap_sg(pm8001_ha->dev, t->scatter, n_elem,
501 t->data_dir);
502out_done:
503 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
504 return rc;
505}
506
507/**
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
514 */
515int pm8001_queue_command(struct sas_task *task, const int num,
516 gfp_t gfp_flags)
517{
518 return pm8001_task_exec(task, num, gfp_flags, 0, NULL);
519}
520
521void pm8001_ccb_free(struct pm8001_hba_info *pm8001_ha, u32 ccb_idx)
522{
523 pm8001_tag_clear(pm8001_ha, ccb_idx);
524}
525
526/**
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.
532 */
533void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha,
534 struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx)
535{
536 if (!ccb->task)
537 return;
538 if (!sas_protocol_ata(task->task_proto))
539 if (ccb->n_elem)
540 dma_unmap_sg(pm8001_ha->dev, task->scatter,
541 task->num_scatter, task->data_dir);
542
543 switch (task->task_proto) {
544 case SAS_PROTOCOL_SMP:
545 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_resp, 1,
546 PCI_DMA_FROMDEVICE);
547 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_req, 1,
548 PCI_DMA_TODEVICE);
549 break;
550
551 case SAS_PROTOCOL_SATA:
552 case SAS_PROTOCOL_STP:
553 case SAS_PROTOCOL_SSP:
554 default:
555 /* do nothing */
556 break;
557 }
558 task->lldd_task = NULL;
559 ccb->task = NULL;
560 ccb->ccb_tag = 0xFFFFFFFF;
561 pm8001_ccb_free(pm8001_ha, ccb_idx);
562}
563
564 /**
565 * pm8001_alloc_dev - find a empty pm8001_device
566 * @pm8001_ha: our hba card information
567 */
568struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha)
569{
570 u32 dev;
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];
575 }
576 }
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));
581 }
582 return NULL;
583}
584
585static void pm8001_free_dev(struct pm8001_device *pm8001_dev)
586{
587 u32 id = pm8001_dev->id;
588 memset(pm8001_dev, 0, sizeof(*pm8001_dev));
589 pm8001_dev->id = id;
590 pm8001_dev->dev_type = NO_DEVICE;
591 pm8001_dev->device_id = PM8001_MAX_DEVICES;
592 pm8001_dev->sas_device = NULL;
593}
594
595/**
596 * pm8001_dev_found_notify - libsas notify a device is found.
597 * @dev: the device structure which sas layer used.
598 *
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.
606 */
607static int pm8001_dev_found_notify(struct domain_device *dev)
608{
609 unsigned long flags = 0;
610 int res = 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);
615 u32 flag = 0;
616 pm8001_ha = pm8001_find_ha_by_dev(dev);
617 spin_lock_irqsave(&pm8001_ha->lock, flags);
618
619 pm8001_device = pm8001_alloc_dev(pm8001_ha);
620 if (!pm8001_device) {
621 res = -1;
622 goto found_out;
623 }
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)) {
629 int phy_id;
630 struct ex_phy *phy;
631 for (phy_id = 0; phy_id < parent_dev->ex_dev.num_phys;
632 phy_id++) {
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;
637 break;
638 }
639 }
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)));
645 res = -1;
646 }
647 } else {
648 if (dev->dev_type == SATA_DEV) {
649 pm8001_device->attached_phy =
650 dev->rphy->identify.phy_identifier;
651 flag = 1; /* directly sata*/
652 }
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)
659 msleep(50);
660 pm8001_ha->flags |= PM8001F_RUN_TIME ;
661 return 0;
662found_out:
663 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
664 return res;
665}
666
667int pm8001_dev_found(struct domain_device *dev)
668{
669 return pm8001_dev_found_notify(dev);
670}
671
672/**
673 * pm8001_alloc_task - allocate a task structure for TMF
674 */
675static struct sas_task *pm8001_alloc_task(void)
676{
677 struct sas_task *task = kzalloc(sizeof(*task), GFP_KERNEL);
678 if (task) {
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);
684 }
685 return task;
686}
687
688static void pm8001_free_task(struct sas_task *task)
689{
690 if (task) {
691 BUG_ON(!list_empty(&task->list));
692 kfree(task);
693 }
694}
695
696static void pm8001_task_done(struct sas_task *task)
697{
698 if (!del_timer(&task->timer))
699 return;
700 complete(&task->completion);
701}
702
703static void pm8001_tmf_timedout(unsigned long data)
704{
705 struct sas_task *task = (struct sas_task *)data;
706
707 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
708 complete(&task->completion);
709}
710
711#define PM8001_TASK_TIMEOUT 20
712/**
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.
718 *
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.
722 */
723static int pm8001_exec_internal_tmf_task(struct domain_device *dev,
724 void *parameter, u32 para_len, struct pm8001_tmf_task *tmf)
725{
726 int res, retry;
727 struct sas_task *task = NULL;
728 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
729
730 for (retry = 0; retry < 3; retry++) {
731 task = pm8001_alloc_task();
732 if (!task)
733 return -ENOMEM;
734
735 task->dev = dev;
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);
743
744 res = pm8001_task_exec(task, 1, GFP_KERNEL, 1, tmf);
745
746 if (res) {
747 del_timer(&task->timer);
748 PM8001_FAIL_DBG(pm8001_ha,
749 pm8001_printk("Executing internal task "
750 "failed\n"));
751 goto ex_err;
752 }
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",
760 tmf->tmf));
761 goto ex_err;
762 }
763 }
764
765 if (task->task_status.resp == SAS_TASK_COMPLETE &&
766 task->task_status.stat == SAM_STAT_GOOD) {
767 res = TMF_RESP_FUNC_COMPLETE;
768 break;
769 }
770
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
774 * underrun */
775 res = task->task_status.residual;
776 break;
777 }
778
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"));
783 res = -EMSGSIZE;
784 break;
785 } else {
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);
793 task = NULL;
794 }
795 }
796ex_err:
797 BUG_ON(retry == 3 && task != NULL);
798 if (task != NULL)
799 pm8001_free_task(task);
800 return res;
801}
802
803static int
804pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha,
805 struct pm8001_device *pm8001_dev, struct domain_device *dev, u32 flag,
806 u32 task_tag)
807{
808 int res, retry;
809 u32 ccb_tag;
810 struct pm8001_ccb_info *ccb;
811 struct sas_task *task = NULL;
812
813 for (retry = 0; retry < 3; retry++) {
814 task = pm8001_alloc_task();
815 if (!task)
816 return -ENOMEM;
817
818 task->dev = dev;
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);
825
826 res = pm8001_tag_alloc(pm8001_ha, &ccb_tag);
827 if (res)
828 return res;
829 ccb = &pm8001_ha->ccb_info[ccb_tag];
830 ccb->device = pm8001_dev;
831 ccb->ccb_tag = ccb_tag;
832 ccb->task = task;
833
834 res = PM8001_CHIP_DISP->task_abort(pm8001_ha,
835 pm8001_dev, flag, task_tag, ccb_tag);
836
837 if (res) {
838 del_timer(&task->timer);
839 PM8001_FAIL_DBG(pm8001_ha,
840 pm8001_printk("Executing internal task "
841 "failed\n"));
842 goto ex_err;
843 }
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"));
851 goto ex_err;
852 }
853 }
854
855 if (task->task_status.resp == SAS_TASK_COMPLETE &&
856 task->task_status.stat == SAM_STAT_GOOD) {
857 res = TMF_RESP_FUNC_COMPLETE;
858 break;
859
860 } else {
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);
868 task = NULL;
869 }
870 }
871ex_err:
872 BUG_ON(retry == 3 && task != NULL);
873 if (task != NULL)
874 pm8001_free_task(task);
875 return res;
876}
877
878/**
879 * pm8001_dev_gone_notify - see the comments for "pm8001_dev_found_notify"
880 * @dev: the device structure which sas layer used.
881 */
882static void pm8001_dev_gone_notify(struct domain_device *dev)
883{
884 unsigned long flags = 0;
885 u32 tag;
886 struct pm8001_hba_info *pm8001_ha;
887 struct pm8001_device *pm8001_dev = dev->lldd_dev;
888
889 pm8001_ha = pm8001_find_ha_by_dev(dev);
890 spin_lock_irqsave(&pm8001_ha->lock, flags);
891 pm8001_tag_alloc(pm8001_ha, &tag);
892 if (pm8001_dev) {
893 u32 device_id = pm8001_dev->device_id;
894
895 PM8001_DISC_DBG(pm8001_ha,
896 pm8001_printk("found dev[%d:%x] is gone.\n",
897 pm8001_dev->device_id, pm8001_dev->dev_type));
898 if (pm8001_dev->running_req) {
899 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
900 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
901 dev, 1, 0);
902 spin_lock_irqsave(&pm8001_ha->lock, flags);
903 }
904 PM8001_CHIP_DISP->dereg_dev_req(pm8001_ha, device_id);
905 pm8001_free_dev(pm8001_dev);
906 } else {
907 PM8001_DISC_DBG(pm8001_ha,
908 pm8001_printk("Found dev has gone.\n"));
909 }
910 dev->lldd_dev = NULL;
911 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
912}
913
914void pm8001_dev_gone(struct domain_device *dev)
915{
916 pm8001_dev_gone_notify(dev);
917}
918
919static int pm8001_issue_ssp_tmf(struct domain_device *dev,
920 u8 *lun, struct pm8001_tmf_task *tmf)
921{
922 struct sas_ssp_task ssp_task;
923 if (!(dev->tproto & SAS_PROTOCOL_SSP))
924 return TMF_RESP_FUNC_ESUPP;
925
926 strncpy((u8 *)&ssp_task.LUN, lun, 8);
927 return pm8001_exec_internal_tmf_task(dev, &ssp_task, sizeof(ssp_task),
928 tmf);
929}
930
931/**
932 * Standard mandates link reset for ATA (type 0) and hard reset for
933 * SSP (type 1) , only for RECOVERY
934 */
935int pm8001_I_T_nexus_reset(struct domain_device *dev)
936{
937 int rc = TMF_RESP_FUNC_FAILED;
938 struct pm8001_device *pm8001_dev;
939 struct pm8001_hba_info *pm8001_ha;
940 struct sas_phy *phy;
941 if (!dev || !dev->lldd_dev)
942 return -1;
943
944 pm8001_dev = dev->lldd_dev;
945 pm8001_ha = pm8001_find_ha_by_dev(dev);
946 phy = sas_find_local_phy(dev);
947
948 if (dev_is_sata(dev)) {
949 DECLARE_COMPLETION_ONSTACK(completion_setstate);
950 if (scsi_is_sas_phy_local(phy))
951 return 0;
952 rc = sas_phy_reset(phy, 1);
953 msleep(2000);
954 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
955 dev, 1, 0);
956 pm8001_dev->setds_completion = &completion_setstate;
957 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
958 pm8001_dev, 0x01);
959 wait_for_completion(&completion_setstate);
960 } else{
961 rc = sas_phy_reset(phy, 1);
962 msleep(2000);
963 }
964 PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n",
965 pm8001_dev->device_id, rc));
966 return rc;
967}
968
969/* mandatory SAM-3, the task reset the specified LUN*/
970int pm8001_lu_reset(struct domain_device *dev, u8 *lun)
971{
972 int rc = TMF_RESP_FUNC_FAILED;
973 struct pm8001_tmf_task tmf_task;
974 struct pm8001_device *pm8001_dev = dev->lldd_dev;
975 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
976 if (dev_is_sata(dev)) {
977 struct sas_phy *phy = sas_find_local_phy(dev);
978 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
979 dev, 1, 0);
980 rc = sas_phy_reset(phy, 1);
981 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
982 pm8001_dev, 0x01);
983 msleep(2000);
984 } else {
985 tmf_task.tmf = TMF_LU_RESET;
986 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
987 }
988 /* If failed, fall-through I_T_Nexus reset */
989 PM8001_EH_DBG(pm8001_ha, pm8001_printk("for device[%x]:rc=%d\n",
990 pm8001_dev->device_id, rc));
991 return rc;
992}
993
994/* optional SAM-3 */
995int pm8001_query_task(struct sas_task *task)
996{
997 u32 tag = 0xdeadbeef;
998 int i = 0;
999 struct scsi_lun lun;
1000 struct pm8001_tmf_task tmf_task;
1001 int rc = TMF_RESP_FUNC_FAILED;
1002 if (unlikely(!task || !task->lldd_task || !task->dev))
1003 return rc;
1004
1005 if (task->task_proto & SAS_PROTOCOL_SSP) {
1006 struct scsi_cmnd *cmnd = task->uldd_task;
1007 struct domain_device *dev = task->dev;
1008 struct pm8001_hba_info *pm8001_ha =
1009 pm8001_find_ha_by_dev(dev);
1010
1011 int_to_scsilun(cmnd->device->lun, &lun);
1012 rc = pm8001_find_tag(task, &tag);
1013 if (rc == 0) {
1014 rc = TMF_RESP_FUNC_FAILED;
1015 return rc;
1016 }
1017 PM8001_EH_DBG(pm8001_ha, pm8001_printk("Query:["));
1018 for (i = 0; i < 16; i++)
1019 printk(KERN_INFO "%02x ", cmnd->cmnd[i]);
1020 printk(KERN_INFO "]\n");
1021 tmf_task.tmf = TMF_QUERY_TASK;
1022 tmf_task.tag_of_task_to_be_managed = tag;
1023
1024 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1025 switch (rc) {
1026 /* The task is still in Lun, release it then */
1027 case TMF_RESP_FUNC_SUCC:
1028 PM8001_EH_DBG(pm8001_ha,
1029 pm8001_printk("The task is still in Lun \n"));
1030 /* The task is not in Lun or failed, reset the phy */
1031 case TMF_RESP_FUNC_FAILED:
1032 case TMF_RESP_FUNC_COMPLETE:
1033 PM8001_EH_DBG(pm8001_ha,
1034 pm8001_printk("The task is not in Lun or failed,"
1035 " reset the phy \n"));
1036 break;
1037 }
1038 }
1039 pm8001_printk(":rc= %d\n", rc);
1040 return rc;
1041}
1042
1043/* mandatory SAM-3, still need free task/ccb info, abord the specified task */
1044int pm8001_abort_task(struct sas_task *task)
1045{
1046 unsigned long flags;
1047 u32 tag = 0xdeadbeef;
1048 u32 device_id;
1049 struct domain_device *dev ;
1050 struct pm8001_hba_info *pm8001_ha = NULL;
1051 struct pm8001_ccb_info *ccb;
1052 struct scsi_lun lun;
1053 struct pm8001_device *pm8001_dev;
1054 struct pm8001_tmf_task tmf_task;
1055 int rc = TMF_RESP_FUNC_FAILED;
1056 if (unlikely(!task || !task->lldd_task || !task->dev))
1057 return rc;
1058 spin_lock_irqsave(&task->task_state_lock, flags);
1059 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1060 spin_unlock_irqrestore(&task->task_state_lock, flags);
1061 rc = TMF_RESP_FUNC_COMPLETE;
1062 goto out;
1063 }
1064 spin_unlock_irqrestore(&task->task_state_lock, flags);
1065 if (task->task_proto & SAS_PROTOCOL_SSP) {
1066 struct scsi_cmnd *cmnd = task->uldd_task;
1067 dev = task->dev;
1068 ccb = task->lldd_task;
1069 pm8001_dev = dev->lldd_dev;
1070 pm8001_ha = pm8001_find_ha_by_dev(dev);
1071 int_to_scsilun(cmnd->device->lun, &lun);
1072 rc = pm8001_find_tag(task, &tag);
1073 if (rc == 0) {
1074 printk(KERN_INFO "No such tag in %s\n", __func__);
1075 rc = TMF_RESP_FUNC_FAILED;
1076 return rc;
1077 }
1078 device_id = pm8001_dev->device_id;
1079 PM8001_EH_DBG(pm8001_ha,
1080 pm8001_printk("abort io to deviceid= %d\n", device_id));
1081 tmf_task.tmf = TMF_ABORT_TASK;
1082 tmf_task.tag_of_task_to_be_managed = tag;
1083 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1084 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1085 pm8001_dev->sas_device, 0, tag);
1086 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1087 task->task_proto & SAS_PROTOCOL_STP) {
1088 dev = task->dev;
1089 pm8001_dev = dev->lldd_dev;
1090 pm8001_ha = pm8001_find_ha_by_dev(dev);
1091 rc = pm8001_find_tag(task, &tag);
1092 if (rc == 0) {
1093 printk(KERN_INFO "No such tag in %s\n", __func__);
1094 rc = TMF_RESP_FUNC_FAILED;
1095 return rc;
1096 }
1097 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1098 pm8001_dev->sas_device, 0, tag);
1099 } else if (task->task_proto & SAS_PROTOCOL_SMP) {
1100 /* SMP */
1101 dev = task->dev;
1102 pm8001_dev = dev->lldd_dev;
1103 pm8001_ha = pm8001_find_ha_by_dev(dev);
1104 rc = pm8001_find_tag(task, &tag);
1105 if (rc == 0) {
1106 printk(KERN_INFO "No such tag in %s\n", __func__);
1107 rc = TMF_RESP_FUNC_FAILED;
1108 return rc;
1109 }
1110 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1111 pm8001_dev->sas_device, 0, tag);
1112
1113 }
1114out:
1115 if (rc != TMF_RESP_FUNC_COMPLETE)
1116 pm8001_printk("rc= %d\n", rc);
1117 return rc;
1118}
1119
1120int pm8001_abort_task_set(struct domain_device *dev, u8 *lun)
1121{
1122 int rc = TMF_RESP_FUNC_FAILED;
1123 struct pm8001_tmf_task tmf_task;
1124
1125 tmf_task.tmf = TMF_ABORT_TASK_SET;
1126 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1127 return rc;
1128}
1129
1130int pm8001_clear_aca(struct domain_device *dev, u8 *lun)
1131{
1132 int rc = TMF_RESP_FUNC_FAILED;
1133 struct pm8001_tmf_task tmf_task;
1134
1135 tmf_task.tmf = TMF_CLEAR_ACA;
1136 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1137
1138 return rc;
1139}
1140
1141int pm8001_clear_task_set(struct domain_device *dev, u8 *lun)
1142{
1143 int rc = TMF_RESP_FUNC_FAILED;
1144 struct pm8001_tmf_task tmf_task;
1145 struct pm8001_device *pm8001_dev = dev->lldd_dev;
1146 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
1147
1148 PM8001_EH_DBG(pm8001_ha,
1149 pm8001_printk("I_T_L_Q clear task set[%x]\n",
1150 pm8001_dev->device_id));
1151 tmf_task.tmf = TMF_CLEAR_TASK_SET;
1152 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1153 return rc;
1154}
1155
1/*
2 * PMC-Sierra PM8001/8081/8088/8089 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
41#include <linux/slab.h>
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
71void 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);
169 unsigned long flags;
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;
213 case PHY_FUNC_GET_EVENTS:
214 spin_lock_irqsave(&pm8001_ha->lock, flags);
215 if (pm8001_ha->chip_id == chip_8001) {
216 if (-1 == pm8001_bar4_shift(pm8001_ha,
217 (phy_id < 4) ? 0x30000 : 0x40000)) {
218 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
219 return -EINVAL;
220 }
221 }
222 {
223 struct sas_phy *phy = sas_phy->phy;
224 uint32_t *qp = (uint32_t *)(((char *)
225 pm8001_ha->io_mem[2].memvirtaddr)
226 + 0x1034 + (0x4000 * (phy_id & 3)));
227
228 phy->invalid_dword_count = qp[0];
229 phy->running_disparity_error_count = qp[1];
230 phy->loss_of_dword_sync_count = qp[3];
231 phy->phy_reset_problem_count = qp[4];
232 }
233 if (pm8001_ha->chip_id == chip_8001)
234 pm8001_bar4_shift(pm8001_ha, 0);
235 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
236 return 0;
237 default:
238 rc = -EOPNOTSUPP;
239 }
240 msleep(300);
241 return rc;
242}
243
244/**
245 * pm8001_scan_start - we should enable all HBA phys by sending the phy_start
246 * command to HBA.
247 * @shost: the scsi host data.
248 */
249void pm8001_scan_start(struct Scsi_Host *shost)
250{
251 int i;
252 struct pm8001_hba_info *pm8001_ha;
253 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
254 pm8001_ha = sha->lldd_ha;
255 /* SAS_RE_INITIALIZATION not available in SPCv/ve */
256 if (pm8001_ha->chip_id == chip_8001)
257 PM8001_CHIP_DISP->sas_re_init_req(pm8001_ha);
258 for (i = 0; i < pm8001_ha->chip->n_phy; ++i)
259 PM8001_CHIP_DISP->phy_start_req(pm8001_ha, i);
260}
261
262int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time)
263{
264 struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost);
265
266 /* give the phy enabling interrupt event time to come in (1s
267 * is empirically about all it takes) */
268 if (time < HZ)
269 return 0;
270 /* Wait for discovery to finish */
271 sas_drain_work(ha);
272 return 1;
273}
274
275/**
276 * pm8001_task_prep_smp - the dispatcher function, prepare data for smp task
277 * @pm8001_ha: our hba card information
278 * @ccb: the ccb which attached to smp task
279 */
280static int pm8001_task_prep_smp(struct pm8001_hba_info *pm8001_ha,
281 struct pm8001_ccb_info *ccb)
282{
283 return PM8001_CHIP_DISP->smp_req(pm8001_ha, ccb);
284}
285
286u32 pm8001_get_ncq_tag(struct sas_task *task, u32 *tag)
287{
288 struct ata_queued_cmd *qc = task->uldd_task;
289 if (qc) {
290 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
291 qc->tf.command == ATA_CMD_FPDMA_READ) {
292 *tag = qc->tag;
293 return 1;
294 }
295 }
296 return 0;
297}
298
299/**
300 * pm8001_task_prep_ata - the dispatcher function, prepare data for sata task
301 * @pm8001_ha: our hba card information
302 * @ccb: the ccb which attached to sata task
303 */
304static int pm8001_task_prep_ata(struct pm8001_hba_info *pm8001_ha,
305 struct pm8001_ccb_info *ccb)
306{
307 return PM8001_CHIP_DISP->sata_req(pm8001_ha, ccb);
308}
309
310/**
311 * pm8001_task_prep_ssp_tm - the dispatcher function, prepare task management data
312 * @pm8001_ha: our hba card information
313 * @ccb: the ccb which attached to TM
314 * @tmf: the task management IU
315 */
316static int pm8001_task_prep_ssp_tm(struct pm8001_hba_info *pm8001_ha,
317 struct pm8001_ccb_info *ccb, struct pm8001_tmf_task *tmf)
318{
319 return PM8001_CHIP_DISP->ssp_tm_req(pm8001_ha, ccb, tmf);
320}
321
322/**
323 * pm8001_task_prep_ssp - the dispatcher function,prepare ssp data for ssp task
324 * @pm8001_ha: our hba card information
325 * @ccb: the ccb which attached to ssp task
326 */
327static int pm8001_task_prep_ssp(struct pm8001_hba_info *pm8001_ha,
328 struct pm8001_ccb_info *ccb)
329{
330 return PM8001_CHIP_DISP->ssp_io_req(pm8001_ha, ccb);
331}
332
333 /* Find the local port id that's attached to this device */
334static int sas_find_local_port_id(struct domain_device *dev)
335{
336 struct domain_device *pdev = dev->parent;
337
338 /* Directly attached device */
339 if (!pdev)
340 return dev->port->id;
341 while (pdev) {
342 struct domain_device *pdev_p = pdev->parent;
343 if (!pdev_p)
344 return pdev->port->id;
345 pdev = pdev->parent;
346 }
347 return 0;
348}
349
350/**
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
358 */
359#define DEV_IS_GONE(pm8001_dev) \
360 ((!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED)))
361static int pm8001_task_exec(struct sas_task *task, const int num,
362 gfp_t gfp_flags, int is_tmf, struct pm8001_tmf_task *tmf)
363{
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;
371 u32 n = num;
372 unsigned long flags = 0;
373
374 if (!dev->port) {
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 != SAS_SATA_DEV)
379 t->task_done(t);
380 return 0;
381 }
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);
385 do {
386 dev = t->dev;
387 pm8001_dev = dev->lldd_dev;
388 port = &pm8001_ha->port[sas_find_local_port_id(dev)];
389 if (DEV_IS_GONE(pm8001_dev) || !port->port_attached) {
390 if (sas_protocol_ata(t->task_proto)) {
391 struct task_status_struct *ts = &t->task_status;
392 ts->resp = SAS_TASK_UNDELIVERED;
393 ts->stat = SAS_PHY_DOWN;
394
395 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
396 t->task_done(t);
397 spin_lock_irqsave(&pm8001_ha->lock, flags);
398 if (n > 1)
399 t = list_entry(t->list.next,
400 struct sas_task, list);
401 continue;
402 } else {
403 struct task_status_struct *ts = &t->task_status;
404 ts->resp = SAS_TASK_UNDELIVERED;
405 ts->stat = SAS_PHY_DOWN;
406 t->task_done(t);
407 if (n > 1)
408 t = list_entry(t->list.next,
409 struct sas_task, list);
410 continue;
411 }
412 }
413 rc = pm8001_tag_alloc(pm8001_ha, &tag);
414 if (rc)
415 goto err_out;
416 ccb = &pm8001_ha->ccb_info[tag];
417
418 if (!sas_protocol_ata(t->task_proto)) {
419 if (t->num_scatter) {
420 n_elem = dma_map_sg(pm8001_ha->dev,
421 t->scatter,
422 t->num_scatter,
423 t->data_dir);
424 if (!n_elem) {
425 rc = -ENOMEM;
426 goto err_out_tag;
427 }
428 }
429 } else {
430 n_elem = t->num_scatter;
431 }
432
433 t->lldd_task = ccb;
434 ccb->n_elem = n_elem;
435 ccb->ccb_tag = tag;
436 ccb->task = t;
437 ccb->device = pm8001_dev;
438 switch (t->task_proto) {
439 case SAS_PROTOCOL_SMP:
440 rc = pm8001_task_prep_smp(pm8001_ha, ccb);
441 break;
442 case SAS_PROTOCOL_SSP:
443 if (is_tmf)
444 rc = pm8001_task_prep_ssp_tm(pm8001_ha,
445 ccb, tmf);
446 else
447 rc = pm8001_task_prep_ssp(pm8001_ha, ccb);
448 break;
449 case SAS_PROTOCOL_SATA:
450 case SAS_PROTOCOL_STP:
451 rc = pm8001_task_prep_ata(pm8001_ha, ccb);
452 break;
453 default:
454 dev_printk(KERN_ERR, pm8001_ha->dev,
455 "unknown sas_task proto: 0x%x\n",
456 t->task_proto);
457 rc = -EINVAL;
458 break;
459 }
460
461 if (rc) {
462 PM8001_IO_DBG(pm8001_ha,
463 pm8001_printk("rc is %x\n", rc));
464 goto err_out_tag;
465 }
466 /* TODO: select normal or high priority */
467 spin_lock(&t->task_state_lock);
468 t->task_state_flags |= SAS_TASK_AT_INITIATOR;
469 spin_unlock(&t->task_state_lock);
470 pm8001_dev->running_req++;
471 if (n > 1)
472 t = list_entry(t->list.next, struct sas_task, list);
473 } while (--n);
474 rc = 0;
475 goto out_done;
476
477err_out_tag:
478 pm8001_tag_free(pm8001_ha, tag);
479err_out:
480 dev_printk(KERN_ERR, pm8001_ha->dev, "pm8001 exec failed[%d]!\n", rc);
481 if (!sas_protocol_ata(t->task_proto))
482 if (n_elem)
483 dma_unmap_sg(pm8001_ha->dev, t->scatter, n_elem,
484 t->data_dir);
485out_done:
486 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
487 return rc;
488}
489
490/**
491 * pm8001_queue_command - register for upper layer used, all IO commands sent
492 * to HBA are from this interface.
493 * @task: the task to be execute.
494 * @num: if can_queue great than 1, the task can be queued up. for SMP task,
495 * we always execute one one time
496 * @gfp_flags: gfp_flags
497 */
498int pm8001_queue_command(struct sas_task *task, const int num,
499 gfp_t gfp_flags)
500{
501 return pm8001_task_exec(task, num, gfp_flags, 0, NULL);
502}
503
504void pm8001_ccb_free(struct pm8001_hba_info *pm8001_ha, u32 ccb_idx)
505{
506 pm8001_tag_clear(pm8001_ha, ccb_idx);
507}
508
509/**
510 * pm8001_ccb_task_free - free the sg for ssp and smp command, free the ccb.
511 * @pm8001_ha: our hba card information
512 * @ccb: the ccb which attached to ssp task
513 * @task: the task to be free.
514 * @ccb_idx: ccb index.
515 */
516void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha,
517 struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx)
518{
519 if (!ccb->task)
520 return;
521 if (!sas_protocol_ata(task->task_proto))
522 if (ccb->n_elem)
523 dma_unmap_sg(pm8001_ha->dev, task->scatter,
524 task->num_scatter, task->data_dir);
525
526 switch (task->task_proto) {
527 case SAS_PROTOCOL_SMP:
528 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_resp, 1,
529 PCI_DMA_FROMDEVICE);
530 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_req, 1,
531 PCI_DMA_TODEVICE);
532 break;
533
534 case SAS_PROTOCOL_SATA:
535 case SAS_PROTOCOL_STP:
536 case SAS_PROTOCOL_SSP:
537 default:
538 /* do nothing */
539 break;
540 }
541 task->lldd_task = NULL;
542 ccb->task = NULL;
543 ccb->ccb_tag = 0xFFFFFFFF;
544 ccb->open_retry = 0;
545 pm8001_ccb_free(pm8001_ha, ccb_idx);
546}
547
548 /**
549 * pm8001_alloc_dev - find a empty pm8001_device
550 * @pm8001_ha: our hba card information
551 */
552struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha)
553{
554 u32 dev;
555 for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) {
556 if (pm8001_ha->devices[dev].dev_type == SAS_PHY_UNUSED) {
557 pm8001_ha->devices[dev].id = dev;
558 return &pm8001_ha->devices[dev];
559 }
560 }
561 if (dev == PM8001_MAX_DEVICES) {
562 PM8001_FAIL_DBG(pm8001_ha,
563 pm8001_printk("max support %d devices, ignore ..\n",
564 PM8001_MAX_DEVICES));
565 }
566 return NULL;
567}
568/**
569 * pm8001_find_dev - find a matching pm8001_device
570 * @pm8001_ha: our hba card information
571 */
572struct pm8001_device *pm8001_find_dev(struct pm8001_hba_info *pm8001_ha,
573 u32 device_id)
574{
575 u32 dev;
576 for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) {
577 if (pm8001_ha->devices[dev].device_id == device_id)
578 return &pm8001_ha->devices[dev];
579 }
580 if (dev == PM8001_MAX_DEVICES) {
581 PM8001_FAIL_DBG(pm8001_ha, pm8001_printk("NO MATCHING "
582 "DEVICE FOUND !!!\n"));
583 }
584 return NULL;
585}
586
587static void pm8001_free_dev(struct pm8001_device *pm8001_dev)
588{
589 u32 id = pm8001_dev->id;
590 memset(pm8001_dev, 0, sizeof(*pm8001_dev));
591 pm8001_dev->id = id;
592 pm8001_dev->dev_type = SAS_PHY_UNUSED;
593 pm8001_dev->device_id = PM8001_MAX_DEVICES;
594 pm8001_dev->sas_device = NULL;
595}
596
597/**
598 * pm8001_dev_found_notify - libsas notify a device is found.
599 * @dev: the device structure which sas layer used.
600 *
601 * when libsas find a sas domain device, it should tell the LLDD that
602 * device is found, and then LLDD register this device to HBA firmware
603 * by the command "OPC_INB_REG_DEV", after that the HBA will assign a
604 * device ID(according to device's sas address) and returned it to LLDD. From
605 * now on, we communicate with HBA FW with the device ID which HBA assigned
606 * rather than sas address. it is the necessary step for our HBA but it is
607 * the optional for other HBA driver.
608 */
609static int pm8001_dev_found_notify(struct domain_device *dev)
610{
611 unsigned long flags = 0;
612 int res = 0;
613 struct pm8001_hba_info *pm8001_ha = NULL;
614 struct domain_device *parent_dev = dev->parent;
615 struct pm8001_device *pm8001_device;
616 DECLARE_COMPLETION_ONSTACK(completion);
617 u32 flag = 0;
618 pm8001_ha = pm8001_find_ha_by_dev(dev);
619 spin_lock_irqsave(&pm8001_ha->lock, flags);
620
621 pm8001_device = pm8001_alloc_dev(pm8001_ha);
622 if (!pm8001_device) {
623 res = -1;
624 goto found_out;
625 }
626 pm8001_device->sas_device = dev;
627 dev->lldd_dev = pm8001_device;
628 pm8001_device->dev_type = dev->dev_type;
629 pm8001_device->dcompletion = &completion;
630 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
631 int phy_id;
632 struct ex_phy *phy;
633 for (phy_id = 0; phy_id < parent_dev->ex_dev.num_phys;
634 phy_id++) {
635 phy = &parent_dev->ex_dev.ex_phy[phy_id];
636 if (SAS_ADDR(phy->attached_sas_addr)
637 == SAS_ADDR(dev->sas_addr)) {
638 pm8001_device->attached_phy = phy_id;
639 break;
640 }
641 }
642 if (phy_id == parent_dev->ex_dev.num_phys) {
643 PM8001_FAIL_DBG(pm8001_ha,
644 pm8001_printk("Error: no attached dev:%016llx"
645 " at ex:%016llx.\n", SAS_ADDR(dev->sas_addr),
646 SAS_ADDR(parent_dev->sas_addr)));
647 res = -1;
648 }
649 } else {
650 if (dev->dev_type == SAS_SATA_DEV) {
651 pm8001_device->attached_phy =
652 dev->rphy->identify.phy_identifier;
653 flag = 1; /* directly sata*/
654 }
655 } /*register this device to HBA*/
656 PM8001_DISC_DBG(pm8001_ha, pm8001_printk("Found device\n"));
657 PM8001_CHIP_DISP->reg_dev_req(pm8001_ha, pm8001_device, flag);
658 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
659 wait_for_completion(&completion);
660 if (dev->dev_type == SAS_END_DEVICE)
661 msleep(50);
662 pm8001_ha->flags = PM8001F_RUN_TIME;
663 return 0;
664found_out:
665 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
666 return res;
667}
668
669int pm8001_dev_found(struct domain_device *dev)
670{
671 return pm8001_dev_found_notify(dev);
672}
673
674void pm8001_task_done(struct sas_task *task)
675{
676 if (!del_timer(&task->slow_task->timer))
677 return;
678 complete(&task->slow_task->completion);
679}
680
681static void pm8001_tmf_timedout(unsigned long data)
682{
683 struct sas_task *task = (struct sas_task *)data;
684
685 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
686 complete(&task->slow_task->completion);
687}
688
689#define PM8001_TASK_TIMEOUT 20
690/**
691 * pm8001_exec_internal_tmf_task - execute some task management commands.
692 * @dev: the wanted device.
693 * @tmf: which task management wanted to be take.
694 * @para_len: para_len.
695 * @parameter: ssp task parameter.
696 *
697 * when errors or exception happened, we may want to do something, for example
698 * abort the issued task which result in this execption, it is done by calling
699 * this function, note it is also with the task execute interface.
700 */
701static int pm8001_exec_internal_tmf_task(struct domain_device *dev,
702 void *parameter, u32 para_len, struct pm8001_tmf_task *tmf)
703{
704 int res, retry;
705 struct sas_task *task = NULL;
706 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
707 struct pm8001_device *pm8001_dev = dev->lldd_dev;
708 DECLARE_COMPLETION_ONSTACK(completion_setstate);
709
710 for (retry = 0; retry < 3; retry++) {
711 task = sas_alloc_slow_task(GFP_KERNEL);
712 if (!task)
713 return -ENOMEM;
714
715 task->dev = dev;
716 task->task_proto = dev->tproto;
717 memcpy(&task->ssp_task, parameter, para_len);
718 task->task_done = pm8001_task_done;
719 task->slow_task->timer.data = (unsigned long)task;
720 task->slow_task->timer.function = pm8001_tmf_timedout;
721 task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT*HZ;
722 add_timer(&task->slow_task->timer);
723
724 res = pm8001_task_exec(task, 1, GFP_KERNEL, 1, tmf);
725
726 if (res) {
727 del_timer(&task->slow_task->timer);
728 PM8001_FAIL_DBG(pm8001_ha,
729 pm8001_printk("Executing internal task "
730 "failed\n"));
731 goto ex_err;
732 }
733 wait_for_completion(&task->slow_task->completion);
734 if (pm8001_ha->chip_id != chip_8001) {
735 pm8001_dev->setds_completion = &completion_setstate;
736 PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
737 pm8001_dev, 0x01);
738 wait_for_completion(&completion_setstate);
739 }
740 res = -TMF_RESP_FUNC_FAILED;
741 /* Even TMF timed out, return direct. */
742 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
743 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
744 PM8001_FAIL_DBG(pm8001_ha,
745 pm8001_printk("TMF task[%x]timeout.\n",
746 tmf->tmf));
747 goto ex_err;
748 }
749 }
750
751 if (task->task_status.resp == SAS_TASK_COMPLETE &&
752 task->task_status.stat == SAM_STAT_GOOD) {
753 res = TMF_RESP_FUNC_COMPLETE;
754 break;
755 }
756
757 if (task->task_status.resp == SAS_TASK_COMPLETE &&
758 task->task_status.stat == SAS_DATA_UNDERRUN) {
759 /* no error, but return the number of bytes of
760 * underrun */
761 res = task->task_status.residual;
762 break;
763 }
764
765 if (task->task_status.resp == SAS_TASK_COMPLETE &&
766 task->task_status.stat == SAS_DATA_OVERRUN) {
767 PM8001_FAIL_DBG(pm8001_ha,
768 pm8001_printk("Blocked task error.\n"));
769 res = -EMSGSIZE;
770 break;
771 } else {
772 PM8001_EH_DBG(pm8001_ha,
773 pm8001_printk(" Task to dev %016llx response:"
774 "0x%x status 0x%x\n",
775 SAS_ADDR(dev->sas_addr),
776 task->task_status.resp,
777 task->task_status.stat));
778 sas_free_task(task);
779 task = NULL;
780 }
781 }
782ex_err:
783 BUG_ON(retry == 3 && task != NULL);
784 sas_free_task(task);
785 return res;
786}
787
788static int
789pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha,
790 struct pm8001_device *pm8001_dev, struct domain_device *dev, u32 flag,
791 u32 task_tag)
792{
793 int res, retry;
794 u32 ccb_tag;
795 struct pm8001_ccb_info *ccb;
796 struct sas_task *task = NULL;
797
798 for (retry = 0; retry < 3; retry++) {
799 task = sas_alloc_slow_task(GFP_KERNEL);
800 if (!task)
801 return -ENOMEM;
802
803 task->dev = dev;
804 task->task_proto = dev->tproto;
805 task->task_done = pm8001_task_done;
806 task->slow_task->timer.data = (unsigned long)task;
807 task->slow_task->timer.function = pm8001_tmf_timedout;
808 task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT * HZ;
809 add_timer(&task->slow_task->timer);
810
811 res = pm8001_tag_alloc(pm8001_ha, &ccb_tag);
812 if (res)
813 return res;
814 ccb = &pm8001_ha->ccb_info[ccb_tag];
815 ccb->device = pm8001_dev;
816 ccb->ccb_tag = ccb_tag;
817 ccb->task = task;
818
819 res = PM8001_CHIP_DISP->task_abort(pm8001_ha,
820 pm8001_dev, flag, task_tag, ccb_tag);
821
822 if (res) {
823 del_timer(&task->slow_task->timer);
824 PM8001_FAIL_DBG(pm8001_ha,
825 pm8001_printk("Executing internal task "
826 "failed\n"));
827 goto ex_err;
828 }
829 wait_for_completion(&task->slow_task->completion);
830 res = TMF_RESP_FUNC_FAILED;
831 /* Even TMF timed out, return direct. */
832 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
833 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
834 PM8001_FAIL_DBG(pm8001_ha,
835 pm8001_printk("TMF task timeout.\n"));
836 goto ex_err;
837 }
838 }
839
840 if (task->task_status.resp == SAS_TASK_COMPLETE &&
841 task->task_status.stat == SAM_STAT_GOOD) {
842 res = TMF_RESP_FUNC_COMPLETE;
843 break;
844
845 } else {
846 PM8001_EH_DBG(pm8001_ha,
847 pm8001_printk(" Task to dev %016llx response: "
848 "0x%x status 0x%x\n",
849 SAS_ADDR(dev->sas_addr),
850 task->task_status.resp,
851 task->task_status.stat));
852 sas_free_task(task);
853 task = NULL;
854 }
855 }
856ex_err:
857 BUG_ON(retry == 3 && task != NULL);
858 sas_free_task(task);
859 return res;
860}
861
862/**
863 * pm8001_dev_gone_notify - see the comments for "pm8001_dev_found_notify"
864 * @dev: the device structure which sas layer used.
865 */
866static void pm8001_dev_gone_notify(struct domain_device *dev)
867{
868 unsigned long flags = 0;
869 struct pm8001_hba_info *pm8001_ha;
870 struct pm8001_device *pm8001_dev = dev->lldd_dev;
871
872 pm8001_ha = pm8001_find_ha_by_dev(dev);
873 spin_lock_irqsave(&pm8001_ha->lock, flags);
874 if (pm8001_dev) {
875 u32 device_id = pm8001_dev->device_id;
876
877 PM8001_DISC_DBG(pm8001_ha,
878 pm8001_printk("found dev[%d:%x] is gone.\n",
879 pm8001_dev->device_id, pm8001_dev->dev_type));
880 if (pm8001_dev->running_req) {
881 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
882 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
883 dev, 1, 0);
884 spin_lock_irqsave(&pm8001_ha->lock, flags);
885 }
886 PM8001_CHIP_DISP->dereg_dev_req(pm8001_ha, device_id);
887 pm8001_free_dev(pm8001_dev);
888 } else {
889 PM8001_DISC_DBG(pm8001_ha,
890 pm8001_printk("Found dev has gone.\n"));
891 }
892 dev->lldd_dev = NULL;
893 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
894}
895
896void pm8001_dev_gone(struct domain_device *dev)
897{
898 pm8001_dev_gone_notify(dev);
899}
900
901static int pm8001_issue_ssp_tmf(struct domain_device *dev,
902 u8 *lun, struct pm8001_tmf_task *tmf)
903{
904 struct sas_ssp_task ssp_task;
905 if (!(dev->tproto & SAS_PROTOCOL_SSP))
906 return TMF_RESP_FUNC_ESUPP;
907
908 strncpy((u8 *)&ssp_task.LUN, lun, 8);
909 return pm8001_exec_internal_tmf_task(dev, &ssp_task, sizeof(ssp_task),
910 tmf);
911}
912
913/* retry commands by ha, by task and/or by device */
914void pm8001_open_reject_retry(
915 struct pm8001_hba_info *pm8001_ha,
916 struct sas_task *task_to_close,
917 struct pm8001_device *device_to_close)
918{
919 int i;
920 unsigned long flags;
921
922 if (pm8001_ha == NULL)
923 return;
924
925 spin_lock_irqsave(&pm8001_ha->lock, flags);
926
927 for (i = 0; i < PM8001_MAX_CCB; i++) {
928 struct sas_task *task;
929 struct task_status_struct *ts;
930 struct pm8001_device *pm8001_dev;
931 unsigned long flags1;
932 u32 tag;
933 struct pm8001_ccb_info *ccb = &pm8001_ha->ccb_info[i];
934
935 pm8001_dev = ccb->device;
936 if (!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED))
937 continue;
938 if (!device_to_close) {
939 uintptr_t d = (uintptr_t)pm8001_dev
940 - (uintptr_t)&pm8001_ha->devices;
941 if (((d % sizeof(*pm8001_dev)) != 0)
942 || ((d / sizeof(*pm8001_dev)) >= PM8001_MAX_DEVICES))
943 continue;
944 } else if (pm8001_dev != device_to_close)
945 continue;
946 tag = ccb->ccb_tag;
947 if (!tag || (tag == 0xFFFFFFFF))
948 continue;
949 task = ccb->task;
950 if (!task || !task->task_done)
951 continue;
952 if (task_to_close && (task != task_to_close))
953 continue;
954 ts = &task->task_status;
955 ts->resp = SAS_TASK_COMPLETE;
956 /* Force the midlayer to retry */
957 ts->stat = SAS_OPEN_REJECT;
958 ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
959 if (pm8001_dev)
960 pm8001_dev->running_req--;
961 spin_lock_irqsave(&task->task_state_lock, flags1);
962 task->task_state_flags &= ~SAS_TASK_STATE_PENDING;
963 task->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
964 task->task_state_flags |= SAS_TASK_STATE_DONE;
965 if (unlikely((task->task_state_flags
966 & SAS_TASK_STATE_ABORTED))) {
967 spin_unlock_irqrestore(&task->task_state_lock,
968 flags1);
969 pm8001_ccb_task_free(pm8001_ha, task, ccb, tag);
970 } else {
971 spin_unlock_irqrestore(&task->task_state_lock,
972 flags1);
973 pm8001_ccb_task_free(pm8001_ha, task, ccb, tag);
974 mb();/* in order to force CPU ordering */
975 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
976 task->task_done(task);
977 spin_lock_irqsave(&pm8001_ha->lock, flags);
978 }
979 }
980
981 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
982}
983
984/**
985 * Standard mandates link reset for ATA (type 0) and hard reset for
986 * SSP (type 1) , only for RECOVERY
987 */
988int pm8001_I_T_nexus_reset(struct domain_device *dev)
989{
990 int rc = TMF_RESP_FUNC_FAILED;
991 struct pm8001_device *pm8001_dev;
992 struct pm8001_hba_info *pm8001_ha;
993 struct sas_phy *phy;
994
995 if (!dev || !dev->lldd_dev)
996 return -ENODEV;
997
998 pm8001_dev = dev->lldd_dev;
999 pm8001_ha = pm8001_find_ha_by_dev(dev);
1000 phy = sas_get_local_phy(dev);
1001
1002 if (dev_is_sata(dev)) {
1003 DECLARE_COMPLETION_ONSTACK(completion_setstate);
1004 if (scsi_is_sas_phy_local(phy)) {
1005 rc = 0;
1006 goto out;
1007 }
1008 rc = sas_phy_reset(phy, 1);
1009 msleep(2000);
1010 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
1011 dev, 1, 0);
1012 pm8001_dev->setds_completion = &completion_setstate;
1013 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
1014 pm8001_dev, 0x01);
1015 wait_for_completion(&completion_setstate);
1016 } else {
1017 rc = sas_phy_reset(phy, 1);
1018 msleep(2000);
1019 }
1020 PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n",
1021 pm8001_dev->device_id, rc));
1022 out:
1023 sas_put_local_phy(phy);
1024 return rc;
1025}
1026
1027/*
1028* This function handle the IT_NEXUS_XXX event or completion
1029* status code for SSP/SATA/SMP I/O request.
1030*/
1031int pm8001_I_T_nexus_event_handler(struct domain_device *dev)
1032{
1033 int rc = TMF_RESP_FUNC_FAILED;
1034 struct pm8001_device *pm8001_dev;
1035 struct pm8001_hba_info *pm8001_ha;
1036 struct sas_phy *phy;
1037 u32 device_id = 0;
1038
1039 if (!dev || !dev->lldd_dev)
1040 return -1;
1041
1042 pm8001_dev = dev->lldd_dev;
1043 device_id = pm8001_dev->device_id;
1044 pm8001_ha = pm8001_find_ha_by_dev(dev);
1045
1046 PM8001_EH_DBG(pm8001_ha,
1047 pm8001_printk("I_T_Nexus handler invoked !!"));
1048
1049 phy = sas_get_local_phy(dev);
1050
1051 if (dev_is_sata(dev)) {
1052 DECLARE_COMPLETION_ONSTACK(completion_setstate);
1053 if (scsi_is_sas_phy_local(phy)) {
1054 rc = 0;
1055 goto out;
1056 }
1057 /* send internal ssp/sata/smp abort command to FW */
1058 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
1059 dev, 1, 0);
1060 msleep(100);
1061
1062 /* deregister the target device */
1063 pm8001_dev_gone_notify(dev);
1064 msleep(200);
1065
1066 /*send phy reset to hard reset target */
1067 rc = sas_phy_reset(phy, 1);
1068 msleep(2000);
1069 pm8001_dev->setds_completion = &completion_setstate;
1070
1071 wait_for_completion(&completion_setstate);
1072 } else {
1073 /* send internal ssp/sata/smp abort command to FW */
1074 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
1075 dev, 1, 0);
1076 msleep(100);
1077
1078 /* deregister the target device */
1079 pm8001_dev_gone_notify(dev);
1080 msleep(200);
1081
1082 /*send phy reset to hard reset target */
1083 rc = sas_phy_reset(phy, 1);
1084 msleep(2000);
1085 }
1086 PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n",
1087 pm8001_dev->device_id, rc));
1088out:
1089 sas_put_local_phy(phy);
1090
1091 return rc;
1092}
1093/* mandatory SAM-3, the task reset the specified LUN*/
1094int pm8001_lu_reset(struct domain_device *dev, u8 *lun)
1095{
1096 int rc = TMF_RESP_FUNC_FAILED;
1097 struct pm8001_tmf_task tmf_task;
1098 struct pm8001_device *pm8001_dev = dev->lldd_dev;
1099 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
1100 DECLARE_COMPLETION_ONSTACK(completion_setstate);
1101 if (dev_is_sata(dev)) {
1102 struct sas_phy *phy = sas_get_local_phy(dev);
1103 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
1104 dev, 1, 0);
1105 rc = sas_phy_reset(phy, 1);
1106 sas_put_local_phy(phy);
1107 pm8001_dev->setds_completion = &completion_setstate;
1108 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
1109 pm8001_dev, 0x01);
1110 wait_for_completion(&completion_setstate);
1111 } else {
1112 tmf_task.tmf = TMF_LU_RESET;
1113 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1114 }
1115 /* If failed, fall-through I_T_Nexus reset */
1116 PM8001_EH_DBG(pm8001_ha, pm8001_printk("for device[%x]:rc=%d\n",
1117 pm8001_dev->device_id, rc));
1118 return rc;
1119}
1120
1121/* optional SAM-3 */
1122int pm8001_query_task(struct sas_task *task)
1123{
1124 u32 tag = 0xdeadbeef;
1125 int i = 0;
1126 struct scsi_lun lun;
1127 struct pm8001_tmf_task tmf_task;
1128 int rc = TMF_RESP_FUNC_FAILED;
1129 if (unlikely(!task || !task->lldd_task || !task->dev))
1130 return rc;
1131
1132 if (task->task_proto & SAS_PROTOCOL_SSP) {
1133 struct scsi_cmnd *cmnd = task->uldd_task;
1134 struct domain_device *dev = task->dev;
1135 struct pm8001_hba_info *pm8001_ha =
1136 pm8001_find_ha_by_dev(dev);
1137
1138 int_to_scsilun(cmnd->device->lun, &lun);
1139 rc = pm8001_find_tag(task, &tag);
1140 if (rc == 0) {
1141 rc = TMF_RESP_FUNC_FAILED;
1142 return rc;
1143 }
1144 PM8001_EH_DBG(pm8001_ha, pm8001_printk("Query:["));
1145 for (i = 0; i < 16; i++)
1146 printk(KERN_INFO "%02x ", cmnd->cmnd[i]);
1147 printk(KERN_INFO "]\n");
1148 tmf_task.tmf = TMF_QUERY_TASK;
1149 tmf_task.tag_of_task_to_be_managed = tag;
1150
1151 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1152 switch (rc) {
1153 /* The task is still in Lun, release it then */
1154 case TMF_RESP_FUNC_SUCC:
1155 PM8001_EH_DBG(pm8001_ha,
1156 pm8001_printk("The task is still in Lun\n"));
1157 break;
1158 /* The task is not in Lun or failed, reset the phy */
1159 case TMF_RESP_FUNC_FAILED:
1160 case TMF_RESP_FUNC_COMPLETE:
1161 PM8001_EH_DBG(pm8001_ha,
1162 pm8001_printk("The task is not in Lun or failed,"
1163 " reset the phy\n"));
1164 break;
1165 }
1166 }
1167 pm8001_printk(":rc= %d\n", rc);
1168 return rc;
1169}
1170
1171/* mandatory SAM-3, still need free task/ccb info, abord the specified task */
1172int pm8001_abort_task(struct sas_task *task)
1173{
1174 unsigned long flags;
1175 u32 tag = 0xdeadbeef;
1176 u32 device_id;
1177 struct domain_device *dev ;
1178 struct pm8001_hba_info *pm8001_ha = NULL;
1179 struct pm8001_ccb_info *ccb;
1180 struct scsi_lun lun;
1181 struct pm8001_device *pm8001_dev;
1182 struct pm8001_tmf_task tmf_task;
1183 int rc = TMF_RESP_FUNC_FAILED;
1184 if (unlikely(!task || !task->lldd_task || !task->dev))
1185 return rc;
1186 spin_lock_irqsave(&task->task_state_lock, flags);
1187 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1188 spin_unlock_irqrestore(&task->task_state_lock, flags);
1189 rc = TMF_RESP_FUNC_COMPLETE;
1190 goto out;
1191 }
1192 spin_unlock_irqrestore(&task->task_state_lock, flags);
1193 if (task->task_proto & SAS_PROTOCOL_SSP) {
1194 struct scsi_cmnd *cmnd = task->uldd_task;
1195 dev = task->dev;
1196 ccb = task->lldd_task;
1197 pm8001_dev = dev->lldd_dev;
1198 pm8001_ha = pm8001_find_ha_by_dev(dev);
1199 int_to_scsilun(cmnd->device->lun, &lun);
1200 rc = pm8001_find_tag(task, &tag);
1201 if (rc == 0) {
1202 printk(KERN_INFO "No such tag in %s\n", __func__);
1203 rc = TMF_RESP_FUNC_FAILED;
1204 return rc;
1205 }
1206 device_id = pm8001_dev->device_id;
1207 PM8001_EH_DBG(pm8001_ha,
1208 pm8001_printk("abort io to deviceid= %d\n", device_id));
1209 tmf_task.tmf = TMF_ABORT_TASK;
1210 tmf_task.tag_of_task_to_be_managed = tag;
1211 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1212 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1213 pm8001_dev->sas_device, 0, tag);
1214 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1215 task->task_proto & SAS_PROTOCOL_STP) {
1216 dev = task->dev;
1217 pm8001_dev = dev->lldd_dev;
1218 pm8001_ha = pm8001_find_ha_by_dev(dev);
1219 rc = pm8001_find_tag(task, &tag);
1220 if (rc == 0) {
1221 printk(KERN_INFO "No such tag in %s\n", __func__);
1222 rc = TMF_RESP_FUNC_FAILED;
1223 return rc;
1224 }
1225 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1226 pm8001_dev->sas_device, 0, tag);
1227 } else if (task->task_proto & SAS_PROTOCOL_SMP) {
1228 /* SMP */
1229 dev = task->dev;
1230 pm8001_dev = dev->lldd_dev;
1231 pm8001_ha = pm8001_find_ha_by_dev(dev);
1232 rc = pm8001_find_tag(task, &tag);
1233 if (rc == 0) {
1234 printk(KERN_INFO "No such tag in %s\n", __func__);
1235 rc = TMF_RESP_FUNC_FAILED;
1236 return rc;
1237 }
1238 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1239 pm8001_dev->sas_device, 0, tag);
1240
1241 }
1242out:
1243 if (rc != TMF_RESP_FUNC_COMPLETE)
1244 pm8001_printk("rc= %d\n", rc);
1245 return rc;
1246}
1247
1248int pm8001_abort_task_set(struct domain_device *dev, u8 *lun)
1249{
1250 int rc = TMF_RESP_FUNC_FAILED;
1251 struct pm8001_tmf_task tmf_task;
1252
1253 tmf_task.tmf = TMF_ABORT_TASK_SET;
1254 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1255 return rc;
1256}
1257
1258int pm8001_clear_aca(struct domain_device *dev, u8 *lun)
1259{
1260 int rc = TMF_RESP_FUNC_FAILED;
1261 struct pm8001_tmf_task tmf_task;
1262
1263 tmf_task.tmf = TMF_CLEAR_ACA;
1264 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1265
1266 return rc;
1267}
1268
1269int pm8001_clear_task_set(struct domain_device *dev, u8 *lun)
1270{
1271 int rc = TMF_RESP_FUNC_FAILED;
1272 struct pm8001_tmf_task tmf_task;
1273 struct pm8001_device *pm8001_dev = dev->lldd_dev;
1274 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
1275
1276 PM8001_EH_DBG(pm8001_ha,
1277 pm8001_printk("I_T_L_Q clear task set[%x]\n",
1278 pm8001_dev->device_id));
1279 tmf_task.tmf = TMF_CLEAR_TASK_SET;
1280 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1281 return rc;
1282}
1283