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40
41#include <linux/slab.h>
42#include "pm8001_sas.h"
43
44
45
46
47
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
62
63
64
65void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag)
66{
67 void *bitmap = pm8001_ha->tags;
68 clear_bit(tag, bitmap);
69}
70
71
72
73
74
75
76inline int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out)
77{
78 unsigned int tag;
79 void *bitmap = pm8001_ha->tags;
80 unsigned long flags;
81
82 spin_lock_irqsave(&pm8001_ha->bitmap_lock, flags);
83 tag = find_first_zero_bit(bitmap, pm8001_ha->tags_num);
84 if (tag >= pm8001_ha->tags_num) {
85 spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags);
86 return -SAS_QUEUE_FULL;
87 }
88 set_bit(tag, bitmap);
89 spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags);
90 *tag_out = tag;
91 return 0;
92}
93
94void pm8001_tag_init(struct pm8001_hba_info *pm8001_ha)
95{
96 int i;
97 for (i = 0; i < pm8001_ha->tags_num; ++i)
98 pm8001_tag_free(pm8001_ha, i);
99}
100
101
102
103
104
105
106
107
108
109
110
111int pm8001_mem_alloc(struct pci_dev *pdev, void **virt_addr,
112 dma_addr_t *pphys_addr, u32 *pphys_addr_hi,
113 u32 *pphys_addr_lo, u32 mem_size, u32 align)
114{
115 caddr_t mem_virt_alloc;
116 dma_addr_t mem_dma_handle;
117 u64 phys_align;
118 u64 align_offset = 0;
119 if (align)
120 align_offset = (dma_addr_t)align - 1;
121 mem_virt_alloc = dma_alloc_coherent(&pdev->dev, mem_size + align,
122 &mem_dma_handle, GFP_KERNEL);
123 if (!mem_virt_alloc)
124 return -ENOMEM;
125 *pphys_addr = mem_dma_handle;
126 phys_align = (*pphys_addr + align_offset) & ~align_offset;
127 *virt_addr = (void *)mem_virt_alloc + phys_align - *pphys_addr;
128 *pphys_addr_hi = upper_32_bits(phys_align);
129 *pphys_addr_lo = lower_32_bits(phys_align);
130 return 0;
131}
132
133
134
135
136
137
138static
139struct pm8001_hba_info *pm8001_find_ha_by_dev(struct domain_device *dev)
140{
141 struct sas_ha_struct *sha = dev->port->ha;
142 struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
143 return pm8001_ha;
144}
145
146
147
148
149
150
151
152
153
154
155int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
156 void *funcdata)
157{
158 int rc = 0, phy_id = sas_phy->id;
159 struct pm8001_hba_info *pm8001_ha = NULL;
160 struct sas_phy_linkrates *rates;
161 struct pm8001_phy *phy;
162 DECLARE_COMPLETION_ONSTACK(completion);
163 unsigned long flags;
164 pm8001_ha = sas_phy->ha->lldd_ha;
165 phy = &pm8001_ha->phy[phy_id];
166 pm8001_ha->phy[phy_id].enable_completion = &completion;
167 switch (func) {
168 case PHY_FUNC_SET_LINK_RATE:
169 rates = funcdata;
170 if (rates->minimum_linkrate) {
171 pm8001_ha->phy[phy_id].minimum_linkrate =
172 rates->minimum_linkrate;
173 }
174 if (rates->maximum_linkrate) {
175 pm8001_ha->phy[phy_id].maximum_linkrate =
176 rates->maximum_linkrate;
177 }
178 if (pm8001_ha->phy[phy_id].phy_state == PHY_LINK_DISABLE) {
179 PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
180 wait_for_completion(&completion);
181 }
182 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
183 PHY_LINK_RESET);
184 break;
185 case PHY_FUNC_HARD_RESET:
186 if (pm8001_ha->phy[phy_id].phy_state == PHY_LINK_DISABLE) {
187 PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
188 wait_for_completion(&completion);
189 }
190 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
191 PHY_HARD_RESET);
192 break;
193 case PHY_FUNC_LINK_RESET:
194 if (pm8001_ha->phy[phy_id].phy_state == PHY_LINK_DISABLE) {
195 PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
196 wait_for_completion(&completion);
197 }
198 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
199 PHY_LINK_RESET);
200 break;
201 case PHY_FUNC_RELEASE_SPINUP_HOLD:
202 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
203 PHY_LINK_RESET);
204 break;
205 case PHY_FUNC_DISABLE:
206 if (pm8001_ha->chip_id != chip_8001) {
207 if (pm8001_ha->phy[phy_id].phy_state ==
208 PHY_STATE_LINK_UP_SPCV) {
209 sas_phy_disconnected(&phy->sas_phy);
210 sas_notify_phy_event(&phy->sas_phy,
211 PHYE_LOSS_OF_SIGNAL, GFP_KERNEL);
212 phy->phy_attached = 0;
213 }
214 } else {
215 if (pm8001_ha->phy[phy_id].phy_state ==
216 PHY_STATE_LINK_UP_SPC) {
217 sas_phy_disconnected(&phy->sas_phy);
218 sas_notify_phy_event(&phy->sas_phy,
219 PHYE_LOSS_OF_SIGNAL, GFP_KERNEL);
220 phy->phy_attached = 0;
221 }
222 }
223 PM8001_CHIP_DISP->phy_stop_req(pm8001_ha, phy_id);
224 break;
225 case PHY_FUNC_GET_EVENTS:
226 spin_lock_irqsave(&pm8001_ha->lock, flags);
227 if (pm8001_ha->chip_id == chip_8001) {
228 if (-1 == pm8001_bar4_shift(pm8001_ha,
229 (phy_id < 4) ? 0x30000 : 0x40000)) {
230 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
231 return -EINVAL;
232 }
233 }
234 {
235 struct sas_phy *phy = sas_phy->phy;
236 uint32_t *qp = (uint32_t *)(((char *)
237 pm8001_ha->io_mem[2].memvirtaddr)
238 + 0x1034 + (0x4000 * (phy_id & 3)));
239
240 phy->invalid_dword_count = qp[0];
241 phy->running_disparity_error_count = qp[1];
242 phy->loss_of_dword_sync_count = qp[3];
243 phy->phy_reset_problem_count = qp[4];
244 }
245 if (pm8001_ha->chip_id == chip_8001)
246 pm8001_bar4_shift(pm8001_ha, 0);
247 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
248 return 0;
249 default:
250 pm8001_dbg(pm8001_ha, DEVIO, "func 0x%x\n", func);
251 rc = -EOPNOTSUPP;
252 }
253 msleep(300);
254 return rc;
255}
256
257
258
259
260
261
262void pm8001_scan_start(struct Scsi_Host *shost)
263{
264 int i;
265 struct pm8001_hba_info *pm8001_ha;
266 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
267 DECLARE_COMPLETION_ONSTACK(completion);
268 pm8001_ha = sha->lldd_ha;
269
270 if (pm8001_ha->chip_id == chip_8001)
271 PM8001_CHIP_DISP->sas_re_init_req(pm8001_ha);
272 for (i = 0; i < pm8001_ha->chip->n_phy; ++i) {
273 pm8001_ha->phy[i].enable_completion = &completion;
274 PM8001_CHIP_DISP->phy_start_req(pm8001_ha, i);
275 wait_for_completion(&completion);
276 msleep(300);
277 }
278}
279
280int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time)
281{
282 struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost);
283
284
285
286 if (time < HZ)
287 return 0;
288
289 sas_drain_work(ha);
290 return 1;
291}
292
293
294
295
296
297
298static int pm8001_task_prep_smp(struct pm8001_hba_info *pm8001_ha,
299 struct pm8001_ccb_info *ccb)
300{
301 return PM8001_CHIP_DISP->smp_req(pm8001_ha, ccb);
302}
303
304u32 pm8001_get_ncq_tag(struct sas_task *task, u32 *tag)
305{
306 struct ata_queued_cmd *qc = task->uldd_task;
307 if (qc) {
308 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
309 qc->tf.command == ATA_CMD_FPDMA_READ ||
310 qc->tf.command == ATA_CMD_FPDMA_RECV ||
311 qc->tf.command == ATA_CMD_FPDMA_SEND ||
312 qc->tf.command == ATA_CMD_NCQ_NON_DATA) {
313 *tag = qc->tag;
314 return 1;
315 }
316 }
317 return 0;
318}
319
320
321
322
323
324
325static int pm8001_task_prep_ata(struct pm8001_hba_info *pm8001_ha,
326 struct pm8001_ccb_info *ccb)
327{
328 return PM8001_CHIP_DISP->sata_req(pm8001_ha, ccb);
329}
330
331
332
333
334
335
336
337static int pm8001_task_prep_ssp_tm(struct pm8001_hba_info *pm8001_ha,
338 struct pm8001_ccb_info *ccb, struct pm8001_tmf_task *tmf)
339{
340 return PM8001_CHIP_DISP->ssp_tm_req(pm8001_ha, ccb, tmf);
341}
342
343
344
345
346
347
348static int pm8001_task_prep_ssp(struct pm8001_hba_info *pm8001_ha,
349 struct pm8001_ccb_info *ccb)
350{
351 return PM8001_CHIP_DISP->ssp_io_req(pm8001_ha, ccb);
352}
353
354
355static int sas_find_local_port_id(struct domain_device *dev)
356{
357 struct domain_device *pdev = dev->parent;
358
359
360 if (!pdev)
361 return dev->port->id;
362 while (pdev) {
363 struct domain_device *pdev_p = pdev->parent;
364 if (!pdev_p)
365 return pdev->port->id;
366 pdev = pdev->parent;
367 }
368 return 0;
369}
370
371#define DEV_IS_GONE(pm8001_dev) \
372 ((!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED)))
373
374
375
376
377
378
379
380static int pm8001_task_exec(struct sas_task *task,
381 gfp_t gfp_flags, int is_tmf, struct pm8001_tmf_task *tmf)
382{
383 struct domain_device *dev = task->dev;
384 struct pm8001_hba_info *pm8001_ha;
385 struct pm8001_device *pm8001_dev;
386 struct pm8001_port *port = NULL;
387 struct sas_task *t = task;
388 struct pm8001_ccb_info *ccb;
389 u32 tag = 0xdeadbeef, rc = 0, n_elem = 0;
390 unsigned long flags = 0;
391 enum sas_protocol task_proto = t->task_proto;
392
393 if (!dev->port) {
394 struct task_status_struct *tsm = &t->task_status;
395 tsm->resp = SAS_TASK_UNDELIVERED;
396 tsm->stat = SAS_PHY_DOWN;
397 if (dev->dev_type != SAS_SATA_DEV)
398 t->task_done(t);
399 return 0;
400 }
401 pm8001_ha = pm8001_find_ha_by_dev(task->dev);
402 if (pm8001_ha->controller_fatal_error) {
403 struct task_status_struct *ts = &t->task_status;
404
405 ts->resp = SAS_TASK_UNDELIVERED;
406 t->task_done(t);
407 return 0;
408 }
409 pm8001_dbg(pm8001_ha, IO, "pm8001_task_exec device\n");
410 spin_lock_irqsave(&pm8001_ha->lock, flags);
411 do {
412 dev = t->dev;
413 pm8001_dev = dev->lldd_dev;
414 port = &pm8001_ha->port[sas_find_local_port_id(dev)];
415 if (DEV_IS_GONE(pm8001_dev) || !port->port_attached) {
416 if (sas_protocol_ata(task_proto)) {
417 struct task_status_struct *ts = &t->task_status;
418 ts->resp = SAS_TASK_UNDELIVERED;
419 ts->stat = SAS_PHY_DOWN;
420
421 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
422 t->task_done(t);
423 spin_lock_irqsave(&pm8001_ha->lock, flags);
424 continue;
425 } else {
426 struct task_status_struct *ts = &t->task_status;
427 ts->resp = SAS_TASK_UNDELIVERED;
428 ts->stat = SAS_PHY_DOWN;
429 t->task_done(t);
430 continue;
431 }
432 }
433 rc = pm8001_tag_alloc(pm8001_ha, &tag);
434 if (rc)
435 goto err_out;
436 ccb = &pm8001_ha->ccb_info[tag];
437
438 if (!sas_protocol_ata(task_proto)) {
439 if (t->num_scatter) {
440 n_elem = dma_map_sg(pm8001_ha->dev,
441 t->scatter,
442 t->num_scatter,
443 t->data_dir);
444 if (!n_elem) {
445 rc = -ENOMEM;
446 goto err_out_tag;
447 }
448 }
449 } else {
450 n_elem = t->num_scatter;
451 }
452
453 t->lldd_task = ccb;
454 ccb->n_elem = n_elem;
455 ccb->ccb_tag = tag;
456 ccb->task = t;
457 ccb->device = pm8001_dev;
458 switch (task_proto) {
459 case SAS_PROTOCOL_SMP:
460 atomic_inc(&pm8001_dev->running_req);
461 rc = pm8001_task_prep_smp(pm8001_ha, ccb);
462 break;
463 case SAS_PROTOCOL_SSP:
464 atomic_inc(&pm8001_dev->running_req);
465 if (is_tmf)
466 rc = pm8001_task_prep_ssp_tm(pm8001_ha,
467 ccb, tmf);
468 else
469 rc = pm8001_task_prep_ssp(pm8001_ha, ccb);
470 break;
471 case SAS_PROTOCOL_SATA:
472 case SAS_PROTOCOL_STP:
473 atomic_inc(&pm8001_dev->running_req);
474 rc = pm8001_task_prep_ata(pm8001_ha, ccb);
475 break;
476 default:
477 dev_printk(KERN_ERR, pm8001_ha->dev,
478 "unknown sas_task proto: 0x%x\n", task_proto);
479 rc = -EINVAL;
480 break;
481 }
482
483 if (rc) {
484 pm8001_dbg(pm8001_ha, IO, "rc is %x\n", rc);
485 atomic_dec(&pm8001_dev->running_req);
486 goto err_out_tag;
487 }
488
489 spin_lock(&t->task_state_lock);
490 t->task_state_flags |= SAS_TASK_AT_INITIATOR;
491 spin_unlock(&t->task_state_lock);
492 } while (0);
493 rc = 0;
494 goto out_done;
495
496err_out_tag:
497 pm8001_tag_free(pm8001_ha, tag);
498err_out:
499 dev_printk(KERN_ERR, pm8001_ha->dev, "pm8001 exec failed[%d]!\n", rc);
500 if (!sas_protocol_ata(task_proto))
501 if (n_elem)
502 dma_unmap_sg(pm8001_ha->dev, t->scatter, t->num_scatter,
503 t->data_dir);
504out_done:
505 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
506 return rc;
507}
508
509
510
511
512
513
514
515int pm8001_queue_command(struct sas_task *task, gfp_t gfp_flags)
516{
517 return pm8001_task_exec(task, gfp_flags, 0, NULL);
518}
519
520
521
522
523
524
525
526
527void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha,
528 struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx)
529{
530 if (!ccb->task)
531 return;
532 if (!sas_protocol_ata(task->task_proto))
533 if (ccb->n_elem)
534 dma_unmap_sg(pm8001_ha->dev, task->scatter,
535 task->num_scatter, task->data_dir);
536
537 switch (task->task_proto) {
538 case SAS_PROTOCOL_SMP:
539 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_resp, 1,
540 DMA_FROM_DEVICE);
541 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_req, 1,
542 DMA_TO_DEVICE);
543 break;
544
545 case SAS_PROTOCOL_SATA:
546 case SAS_PROTOCOL_STP:
547 case SAS_PROTOCOL_SSP:
548 default:
549
550 break;
551 }
552 task->lldd_task = NULL;
553 ccb->task = NULL;
554 ccb->ccb_tag = 0xFFFFFFFF;
555 ccb->open_retry = 0;
556 pm8001_tag_free(pm8001_ha, ccb_idx);
557}
558
559
560
561
562
563static struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha)
564{
565 u32 dev;
566 for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) {
567 if (pm8001_ha->devices[dev].dev_type == SAS_PHY_UNUSED) {
568 pm8001_ha->devices[dev].id = dev;
569 return &pm8001_ha->devices[dev];
570 }
571 }
572 if (dev == PM8001_MAX_DEVICES) {
573 pm8001_dbg(pm8001_ha, FAIL,
574 "max support %d devices, ignore ..\n",
575 PM8001_MAX_DEVICES);
576 }
577 return NULL;
578}
579
580
581
582
583
584struct pm8001_device *pm8001_find_dev(struct pm8001_hba_info *pm8001_ha,
585 u32 device_id)
586{
587 u32 dev;
588 for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) {
589 if (pm8001_ha->devices[dev].device_id == device_id)
590 return &pm8001_ha->devices[dev];
591 }
592 if (dev == PM8001_MAX_DEVICES) {
593 pm8001_dbg(pm8001_ha, FAIL, "NO MATCHING DEVICE FOUND !!!\n");
594 }
595 return NULL;
596}
597
598void pm8001_free_dev(struct pm8001_device *pm8001_dev)
599{
600 u32 id = pm8001_dev->id;
601 memset(pm8001_dev, 0, sizeof(*pm8001_dev));
602 pm8001_dev->id = id;
603 pm8001_dev->dev_type = SAS_PHY_UNUSED;
604 pm8001_dev->device_id = PM8001_MAX_DEVICES;
605 pm8001_dev->sas_device = NULL;
606}
607
608
609
610
611
612
613
614
615
616
617
618
619
620static int pm8001_dev_found_notify(struct domain_device *dev)
621{
622 unsigned long flags = 0;
623 int res = 0;
624 struct pm8001_hba_info *pm8001_ha = NULL;
625 struct domain_device *parent_dev = dev->parent;
626 struct pm8001_device *pm8001_device;
627 DECLARE_COMPLETION_ONSTACK(completion);
628 u32 flag = 0;
629 pm8001_ha = pm8001_find_ha_by_dev(dev);
630 spin_lock_irqsave(&pm8001_ha->lock, flags);
631
632 pm8001_device = pm8001_alloc_dev(pm8001_ha);
633 if (!pm8001_device) {
634 res = -1;
635 goto found_out;
636 }
637 pm8001_device->sas_device = dev;
638 dev->lldd_dev = pm8001_device;
639 pm8001_device->dev_type = dev->dev_type;
640 pm8001_device->dcompletion = &completion;
641 if (parent_dev && dev_is_expander(parent_dev->dev_type)) {
642 int phy_id;
643 struct ex_phy *phy;
644 for (phy_id = 0; phy_id < parent_dev->ex_dev.num_phys;
645 phy_id++) {
646 phy = &parent_dev->ex_dev.ex_phy[phy_id];
647 if (SAS_ADDR(phy->attached_sas_addr)
648 == SAS_ADDR(dev->sas_addr)) {
649 pm8001_device->attached_phy = phy_id;
650 break;
651 }
652 }
653 if (phy_id == parent_dev->ex_dev.num_phys) {
654 pm8001_dbg(pm8001_ha, FAIL,
655 "Error: no attached dev:%016llx at ex:%016llx.\n",
656 SAS_ADDR(dev->sas_addr),
657 SAS_ADDR(parent_dev->sas_addr));
658 res = -1;
659 }
660 } else {
661 if (dev->dev_type == SAS_SATA_DEV) {
662 pm8001_device->attached_phy =
663 dev->rphy->identify.phy_identifier;
664 flag = 1;
665 }
666 }
667 pm8001_dbg(pm8001_ha, DISC, "Found device\n");
668 PM8001_CHIP_DISP->reg_dev_req(pm8001_ha, pm8001_device, flag);
669 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
670 wait_for_completion(&completion);
671 if (dev->dev_type == SAS_END_DEVICE)
672 msleep(50);
673 pm8001_ha->flags = PM8001F_RUN_TIME;
674 return 0;
675found_out:
676 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
677 return res;
678}
679
680int pm8001_dev_found(struct domain_device *dev)
681{
682 return pm8001_dev_found_notify(dev);
683}
684
685void pm8001_task_done(struct sas_task *task)
686{
687 del_timer(&task->slow_task->timer);
688 complete(&task->slow_task->completion);
689}
690
691static void pm8001_tmf_timedout(struct timer_list *t)
692{
693 struct sas_task_slow *slow = from_timer(slow, t, timer);
694 struct sas_task *task = slow->task;
695 unsigned long flags;
696
697 spin_lock_irqsave(&task->task_state_lock, flags);
698 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
699 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
700 complete(&task->slow_task->completion);
701 }
702 spin_unlock_irqrestore(&task->task_state_lock, flags);
703}
704
705#define PM8001_TASK_TIMEOUT 20
706
707
708
709
710
711
712
713
714
715
716
717static int pm8001_exec_internal_tmf_task(struct domain_device *dev,
718 void *parameter, u32 para_len, struct pm8001_tmf_task *tmf)
719{
720 int res, retry;
721 struct sas_task *task = NULL;
722 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
723 struct pm8001_device *pm8001_dev = dev->lldd_dev;
724 DECLARE_COMPLETION_ONSTACK(completion_setstate);
725
726 for (retry = 0; retry < 3; retry++) {
727 task = sas_alloc_slow_task(GFP_KERNEL);
728 if (!task)
729 return -ENOMEM;
730
731 task->dev = dev;
732 task->task_proto = dev->tproto;
733 memcpy(&task->ssp_task, parameter, para_len);
734 task->task_done = pm8001_task_done;
735 task->slow_task->timer.function = pm8001_tmf_timedout;
736 task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT*HZ;
737 add_timer(&task->slow_task->timer);
738
739 res = pm8001_task_exec(task, GFP_KERNEL, 1, tmf);
740
741 if (res) {
742 del_timer(&task->slow_task->timer);
743 pm8001_dbg(pm8001_ha, FAIL, "Executing internal task failed\n");
744 goto ex_err;
745 }
746 wait_for_completion(&task->slow_task->completion);
747 if (pm8001_ha->chip_id != chip_8001) {
748 pm8001_dev->setds_completion = &completion_setstate;
749 PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
750 pm8001_dev, DS_OPERATIONAL);
751 wait_for_completion(&completion_setstate);
752 }
753 res = -TMF_RESP_FUNC_FAILED;
754
755 if (task->task_state_flags & SAS_TASK_STATE_ABORTED) {
756 pm8001_dbg(pm8001_ha, FAIL, "TMF task[%x]timeout.\n",
757 tmf->tmf);
758 goto ex_err;
759 }
760
761 if (task->task_status.resp == SAS_TASK_COMPLETE &&
762 task->task_status.stat == SAS_SAM_STAT_GOOD) {
763 res = TMF_RESP_FUNC_COMPLETE;
764 break;
765 }
766
767 if (task->task_status.resp == SAS_TASK_COMPLETE &&
768 task->task_status.stat == SAS_DATA_UNDERRUN) {
769
770
771 res = task->task_status.residual;
772 break;
773 }
774
775 if (task->task_status.resp == SAS_TASK_COMPLETE &&
776 task->task_status.stat == SAS_DATA_OVERRUN) {
777 pm8001_dbg(pm8001_ha, FAIL, "Blocked task error.\n");
778 res = -EMSGSIZE;
779 break;
780 } else {
781 pm8001_dbg(pm8001_ha, EH,
782 " Task to dev %016llx response:0x%x status 0x%x\n",
783 SAS_ADDR(dev->sas_addr),
784 task->task_status.resp,
785 task->task_status.stat);
786 sas_free_task(task);
787 task = NULL;
788 }
789 }
790ex_err:
791 BUG_ON(retry == 3 && task != NULL);
792 sas_free_task(task);
793 return res;
794}
795
796static int
797pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha,
798 struct pm8001_device *pm8001_dev, struct domain_device *dev, u32 flag,
799 u32 task_tag)
800{
801 int res, retry;
802 u32 ccb_tag;
803 struct pm8001_ccb_info *ccb;
804 struct sas_task *task = NULL;
805
806 for (retry = 0; retry < 3; retry++) {
807 task = sas_alloc_slow_task(GFP_KERNEL);
808 if (!task)
809 return -ENOMEM;
810
811 task->dev = dev;
812 task->task_proto = dev->tproto;
813 task->task_done = pm8001_task_done;
814 task->slow_task->timer.function = pm8001_tmf_timedout;
815 task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT * HZ;
816 add_timer(&task->slow_task->timer);
817
818 res = pm8001_tag_alloc(pm8001_ha, &ccb_tag);
819 if (res)
820 goto ex_err;
821 ccb = &pm8001_ha->ccb_info[ccb_tag];
822 ccb->device = pm8001_dev;
823 ccb->ccb_tag = ccb_tag;
824 ccb->task = task;
825 ccb->n_elem = 0;
826
827 res = PM8001_CHIP_DISP->task_abort(pm8001_ha,
828 pm8001_dev, flag, task_tag, ccb_tag);
829
830 if (res) {
831 del_timer(&task->slow_task->timer);
832 pm8001_dbg(pm8001_ha, FAIL, "Executing internal task failed\n");
833 goto ex_err;
834 }
835 wait_for_completion(&task->slow_task->completion);
836 res = TMF_RESP_FUNC_FAILED;
837
838 if (task->task_state_flags & SAS_TASK_STATE_ABORTED) {
839 pm8001_dbg(pm8001_ha, FAIL, "TMF task timeout.\n");
840 goto ex_err;
841 }
842
843 if (task->task_status.resp == SAS_TASK_COMPLETE &&
844 task->task_status.stat == SAS_SAM_STAT_GOOD) {
845 res = TMF_RESP_FUNC_COMPLETE;
846 break;
847
848 } else {
849 pm8001_dbg(pm8001_ha, EH,
850 " Task to dev %016llx response: 0x%x status 0x%x\n",
851 SAS_ADDR(dev->sas_addr),
852 task->task_status.resp,
853 task->task_status.stat);
854 sas_free_task(task);
855 task = NULL;
856 }
857 }
858ex_err:
859 BUG_ON(retry == 3 && task != NULL);
860 sas_free_task(task);
861 return res;
862}
863
864
865
866
867
868static void pm8001_dev_gone_notify(struct domain_device *dev)
869{
870 unsigned long flags = 0;
871 struct pm8001_hba_info *pm8001_ha;
872 struct pm8001_device *pm8001_dev = dev->lldd_dev;
873
874 pm8001_ha = pm8001_find_ha_by_dev(dev);
875 spin_lock_irqsave(&pm8001_ha->lock, flags);
876 if (pm8001_dev) {
877 u32 device_id = pm8001_dev->device_id;
878
879 pm8001_dbg(pm8001_ha, DISC, "found dev[%d:%x] is gone.\n",
880 pm8001_dev->device_id, pm8001_dev->dev_type);
881 if (atomic_read(&pm8001_dev->running_req)) {
882 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
883 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
884 dev, 1, 0);
885 while (atomic_read(&pm8001_dev->running_req))
886 msleep(20);
887 spin_lock_irqsave(&pm8001_ha->lock, flags);
888 }
889 PM8001_CHIP_DISP->dereg_dev_req(pm8001_ha, device_id);
890 pm8001_free_dev(pm8001_dev);
891 } else {
892 pm8001_dbg(pm8001_ha, DISC, "Found dev has gone.\n");
893 }
894 dev->lldd_dev = NULL;
895 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
896}
897
898void pm8001_dev_gone(struct domain_device *dev)
899{
900 pm8001_dev_gone_notify(dev);
901}
902
903static int pm8001_issue_ssp_tmf(struct domain_device *dev,
904 u8 *lun, struct pm8001_tmf_task *tmf)
905{
906 struct sas_ssp_task ssp_task;
907 if (!(dev->tproto & SAS_PROTOCOL_SSP))
908 return TMF_RESP_FUNC_ESUPP;
909
910 memcpy((u8 *)&ssp_task.LUN, lun, 8);
911 return pm8001_exec_internal_tmf_task(dev, &ssp_task, sizeof(ssp_task),
912 tmf);
913}
914
915
916void pm8001_open_reject_retry(
917 struct pm8001_hba_info *pm8001_ha,
918 struct sas_task *task_to_close,
919 struct pm8001_device *device_to_close)
920{
921 int i;
922 unsigned long flags;
923
924 if (pm8001_ha == NULL)
925 return;
926
927 spin_lock_irqsave(&pm8001_ha->lock, flags);
928
929 for (i = 0; i < PM8001_MAX_CCB; i++) {
930 struct sas_task *task;
931 struct task_status_struct *ts;
932 struct pm8001_device *pm8001_dev;
933 unsigned long flags1;
934 u32 tag;
935 struct pm8001_ccb_info *ccb = &pm8001_ha->ccb_info[i];
936
937 pm8001_dev = ccb->device;
938 if (!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED))
939 continue;
940 if (!device_to_close) {
941 uintptr_t d = (uintptr_t)pm8001_dev
942 - (uintptr_t)&pm8001_ha->devices;
943 if (((d % sizeof(*pm8001_dev)) != 0)
944 || ((d / sizeof(*pm8001_dev)) >= PM8001_MAX_DEVICES))
945 continue;
946 } else if (pm8001_dev != device_to_close)
947 continue;
948 tag = ccb->ccb_tag;
949 if (!tag || (tag == 0xFFFFFFFF))
950 continue;
951 task = ccb->task;
952 if (!task || !task->task_done)
953 continue;
954 if (task_to_close && (task != task_to_close))
955 continue;
956 ts = &task->task_status;
957 ts->resp = SAS_TASK_COMPLETE;
958
959 ts->stat = SAS_OPEN_REJECT;
960 ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
961 if (pm8001_dev)
962 atomic_dec(&pm8001_dev->running_req);
963 spin_lock_irqsave(&task->task_state_lock, flags1);
964 task->task_state_flags &= ~SAS_TASK_STATE_PENDING;
965 task->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
966 task->task_state_flags |= SAS_TASK_STATE_DONE;
967 if (unlikely((task->task_state_flags
968 & SAS_TASK_STATE_ABORTED))) {
969 spin_unlock_irqrestore(&task->task_state_lock,
970 flags1);
971 pm8001_ccb_task_free(pm8001_ha, task, ccb, tag);
972 } else {
973 spin_unlock_irqrestore(&task->task_state_lock,
974 flags1);
975 pm8001_ccb_task_free(pm8001_ha, task, ccb, tag);
976 mb();
977 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
978 task->task_done(task);
979 spin_lock_irqsave(&pm8001_ha->lock, flags);
980 }
981 }
982
983 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
984}
985
986
987
988
989
990
991
992
993int pm8001_I_T_nexus_reset(struct domain_device *dev)
994{
995 int rc = TMF_RESP_FUNC_FAILED;
996 struct pm8001_device *pm8001_dev;
997 struct pm8001_hba_info *pm8001_ha;
998 struct sas_phy *phy;
999
1000 if (!dev || !dev->lldd_dev)
1001 return -ENODEV;
1002
1003 pm8001_dev = dev->lldd_dev;
1004 pm8001_ha = pm8001_find_ha_by_dev(dev);
1005 phy = sas_get_local_phy(dev);
1006
1007 if (dev_is_sata(dev)) {
1008 if (scsi_is_sas_phy_local(phy)) {
1009 rc = 0;
1010 goto out;
1011 }
1012 rc = sas_phy_reset(phy, 1);
1013 if (rc) {
1014 pm8001_dbg(pm8001_ha, EH,
1015 "phy reset failed for device %x\n"
1016 "with rc %d\n", pm8001_dev->device_id, rc);
1017 rc = TMF_RESP_FUNC_FAILED;
1018 goto out;
1019 }
1020 msleep(2000);
1021 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1022 dev, 1, 0);
1023 if (rc) {
1024 pm8001_dbg(pm8001_ha, EH, "task abort failed %x\n"
1025 "with rc %d\n", pm8001_dev->device_id, rc);
1026 rc = TMF_RESP_FUNC_FAILED;
1027 }
1028 } else {
1029 rc = sas_phy_reset(phy, 1);
1030 msleep(2000);
1031 }
1032 pm8001_dbg(pm8001_ha, EH, " for device[%x]:rc=%d\n",
1033 pm8001_dev->device_id, rc);
1034 out:
1035 sas_put_local_phy(phy);
1036 return rc;
1037}
1038
1039
1040
1041
1042
1043int pm8001_I_T_nexus_event_handler(struct domain_device *dev)
1044{
1045 int rc = TMF_RESP_FUNC_FAILED;
1046 struct pm8001_device *pm8001_dev;
1047 struct pm8001_hba_info *pm8001_ha;
1048 struct sas_phy *phy;
1049
1050 if (!dev || !dev->lldd_dev)
1051 return -1;
1052
1053 pm8001_dev = dev->lldd_dev;
1054 pm8001_ha = pm8001_find_ha_by_dev(dev);
1055
1056 pm8001_dbg(pm8001_ha, EH, "I_T_Nexus handler invoked !!\n");
1057
1058 phy = sas_get_local_phy(dev);
1059
1060 if (dev_is_sata(dev)) {
1061 DECLARE_COMPLETION_ONSTACK(completion_setstate);
1062 if (scsi_is_sas_phy_local(phy)) {
1063 rc = 0;
1064 goto out;
1065 }
1066
1067 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1068 dev, 1, 0);
1069 msleep(100);
1070
1071
1072 pm8001_dev_gone_notify(dev);
1073 msleep(200);
1074
1075
1076 rc = sas_phy_reset(phy, 1);
1077 msleep(2000);
1078 pm8001_dev->setds_completion = &completion_setstate;
1079
1080 wait_for_completion(&completion_setstate);
1081 } else {
1082
1083 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1084 dev, 1, 0);
1085 msleep(100);
1086
1087
1088 pm8001_dev_gone_notify(dev);
1089 msleep(200);
1090
1091
1092 rc = sas_phy_reset(phy, 1);
1093 msleep(2000);
1094 }
1095 pm8001_dbg(pm8001_ha, EH, " for device[%x]:rc=%d\n",
1096 pm8001_dev->device_id, rc);
1097out:
1098 sas_put_local_phy(phy);
1099
1100 return rc;
1101}
1102
1103int pm8001_lu_reset(struct domain_device *dev, u8 *lun)
1104{
1105 int rc = TMF_RESP_FUNC_FAILED;
1106 struct pm8001_tmf_task tmf_task;
1107 struct pm8001_device *pm8001_dev = dev->lldd_dev;
1108 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
1109 DECLARE_COMPLETION_ONSTACK(completion_setstate);
1110 if (dev_is_sata(dev)) {
1111 struct sas_phy *phy = sas_get_local_phy(dev);
1112 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1113 dev, 1, 0);
1114 rc = sas_phy_reset(phy, 1);
1115 sas_put_local_phy(phy);
1116 pm8001_dev->setds_completion = &completion_setstate;
1117 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
1118 pm8001_dev, DS_OPERATIONAL);
1119 wait_for_completion(&completion_setstate);
1120 } else {
1121 tmf_task.tmf = TMF_LU_RESET;
1122 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1123 }
1124
1125 pm8001_dbg(pm8001_ha, EH, "for device[%x]:rc=%d\n",
1126 pm8001_dev->device_id, rc);
1127 return rc;
1128}
1129
1130
1131int pm8001_query_task(struct sas_task *task)
1132{
1133 u32 tag = 0xdeadbeef;
1134 struct scsi_lun lun;
1135 struct pm8001_tmf_task tmf_task;
1136 int rc = TMF_RESP_FUNC_FAILED;
1137 if (unlikely(!task || !task->lldd_task || !task->dev))
1138 return rc;
1139
1140 if (task->task_proto & SAS_PROTOCOL_SSP) {
1141 struct scsi_cmnd *cmnd = task->uldd_task;
1142 struct domain_device *dev = task->dev;
1143 struct pm8001_hba_info *pm8001_ha =
1144 pm8001_find_ha_by_dev(dev);
1145
1146 int_to_scsilun(cmnd->device->lun, &lun);
1147 rc = pm8001_find_tag(task, &tag);
1148 if (rc == 0) {
1149 rc = TMF_RESP_FUNC_FAILED;
1150 return rc;
1151 }
1152 pm8001_dbg(pm8001_ha, EH, "Query:[%16ph]\n", cmnd->cmnd);
1153 tmf_task.tmf = TMF_QUERY_TASK;
1154 tmf_task.tag_of_task_to_be_managed = tag;
1155
1156 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1157 switch (rc) {
1158
1159 case TMF_RESP_FUNC_SUCC:
1160 pm8001_dbg(pm8001_ha, EH,
1161 "The task is still in Lun\n");
1162 break;
1163
1164 case TMF_RESP_FUNC_FAILED:
1165 case TMF_RESP_FUNC_COMPLETE:
1166 pm8001_dbg(pm8001_ha, EH,
1167 "The task is not in Lun or failed, reset the phy\n");
1168 break;
1169 }
1170 }
1171 pr_err("pm80xx: rc= %d\n", rc);
1172 return rc;
1173}
1174
1175
1176int pm8001_abort_task(struct sas_task *task)
1177{
1178 unsigned long flags;
1179 u32 tag;
1180 struct domain_device *dev ;
1181 struct pm8001_hba_info *pm8001_ha;
1182 struct scsi_lun lun;
1183 struct pm8001_device *pm8001_dev;
1184 struct pm8001_tmf_task tmf_task;
1185 int rc = TMF_RESP_FUNC_FAILED, ret;
1186 u32 phy_id;
1187 struct sas_task_slow slow_task;
1188
1189 if (unlikely(!task || !task->lldd_task || !task->dev))
1190 return TMF_RESP_FUNC_FAILED;
1191
1192 dev = task->dev;
1193 pm8001_dev = dev->lldd_dev;
1194 pm8001_ha = pm8001_find_ha_by_dev(dev);
1195 phy_id = pm8001_dev->attached_phy;
1196
1197 if (PM8001_CHIP_DISP->fatal_errors(pm8001_ha)) {
1198
1199
1200 return TMF_RESP_FUNC_FAILED;
1201 }
1202
1203 ret = pm8001_find_tag(task, &tag);
1204 if (ret == 0) {
1205 pm8001_info(pm8001_ha, "no tag for task:%p\n", task);
1206 return TMF_RESP_FUNC_FAILED;
1207 }
1208 spin_lock_irqsave(&task->task_state_lock, flags);
1209 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1210 spin_unlock_irqrestore(&task->task_state_lock, flags);
1211 return TMF_RESP_FUNC_COMPLETE;
1212 }
1213 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1214 if (task->slow_task == NULL) {
1215 init_completion(&slow_task.completion);
1216 task->slow_task = &slow_task;
1217 }
1218 spin_unlock_irqrestore(&task->task_state_lock, flags);
1219 if (task->task_proto & SAS_PROTOCOL_SSP) {
1220 struct scsi_cmnd *cmnd = task->uldd_task;
1221 int_to_scsilun(cmnd->device->lun, &lun);
1222 tmf_task.tmf = TMF_ABORT_TASK;
1223 tmf_task.tag_of_task_to_be_managed = tag;
1224 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1225 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1226 pm8001_dev->sas_device, 0, tag);
1227 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1228 task->task_proto & SAS_PROTOCOL_STP) {
1229 if (pm8001_ha->chip_id == chip_8006) {
1230 DECLARE_COMPLETION_ONSTACK(completion_reset);
1231 DECLARE_COMPLETION_ONSTACK(completion);
1232 struct pm8001_phy *phy = pm8001_ha->phy + phy_id;
1233
1234
1235 pm8001_dev->setds_completion = &completion;
1236 PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
1237 pm8001_dev, DS_IN_RECOVERY);
1238 wait_for_completion(&completion);
1239
1240
1241 reinit_completion(&completion);
1242 phy->port_reset_status = PORT_RESET_TMO;
1243 phy->reset_success = false;
1244 phy->enable_completion = &completion;
1245 phy->reset_completion = &completion_reset;
1246 ret = PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
1247 PHY_HARD_RESET);
1248 if (ret) {
1249 phy->enable_completion = NULL;
1250 phy->reset_completion = NULL;
1251 goto out;
1252 }
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262 pm8001_dbg(pm8001_ha, MSG,
1263 "Waiting for local phy ctl\n");
1264 ret = wait_for_completion_timeout(&completion,
1265 PM8001_TASK_TIMEOUT * HZ);
1266 if (!ret || !phy->reset_success) {
1267 phy->enable_completion = NULL;
1268 phy->reset_completion = NULL;
1269 } else {
1270
1271
1272
1273 pm8001_dbg(pm8001_ha, MSG,
1274 "Waiting for Port reset\n");
1275 ret = wait_for_completion_timeout(
1276 &completion_reset,
1277 PM8001_TASK_TIMEOUT * HZ);
1278 if (!ret)
1279 phy->reset_completion = NULL;
1280 WARN_ON(phy->port_reset_status ==
1281 PORT_RESET_TMO);
1282 if (phy->port_reset_status == PORT_RESET_TMO) {
1283 pm8001_dev_gone_notify(dev);
1284 goto out;
1285 }
1286 }
1287
1288
1289
1290
1291
1292
1293
1294 ret = pm8001_exec_internal_task_abort(pm8001_ha,
1295 pm8001_dev, pm8001_dev->sas_device, 1, tag);
1296 if (ret)
1297 goto out;
1298 ret = wait_for_completion_timeout(
1299 &task->slow_task->completion,
1300 PM8001_TASK_TIMEOUT * HZ);
1301 if (!ret)
1302 goto out;
1303
1304
1305 reinit_completion(&completion);
1306 pm8001_dev->setds_completion = &completion;
1307 PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
1308 pm8001_dev, DS_OPERATIONAL);
1309 wait_for_completion(&completion);
1310 } else {
1311 rc = pm8001_exec_internal_task_abort(pm8001_ha,
1312 pm8001_dev, pm8001_dev->sas_device, 0, tag);
1313 }
1314 rc = TMF_RESP_FUNC_COMPLETE;
1315 } else if (task->task_proto & SAS_PROTOCOL_SMP) {
1316
1317 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1318 pm8001_dev->sas_device, 0, tag);
1319
1320 }
1321out:
1322 spin_lock_irqsave(&task->task_state_lock, flags);
1323 if (task->slow_task == &slow_task)
1324 task->slow_task = NULL;
1325 spin_unlock_irqrestore(&task->task_state_lock, flags);
1326 if (rc != TMF_RESP_FUNC_COMPLETE)
1327 pm8001_info(pm8001_ha, "rc= %d\n", rc);
1328 return rc;
1329}
1330
1331int pm8001_abort_task_set(struct domain_device *dev, u8 *lun)
1332{
1333 struct pm8001_tmf_task tmf_task;
1334
1335 tmf_task.tmf = TMF_ABORT_TASK_SET;
1336 return pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1337}
1338
1339int pm8001_clear_aca(struct domain_device *dev, u8 *lun)
1340{
1341 struct pm8001_tmf_task tmf_task;
1342
1343 tmf_task.tmf = TMF_CLEAR_ACA;
1344 return pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1345}
1346
1347int pm8001_clear_task_set(struct domain_device *dev, u8 *lun)
1348{
1349 struct pm8001_tmf_task tmf_task;
1350 struct pm8001_device *pm8001_dev = dev->lldd_dev;
1351 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
1352
1353 pm8001_dbg(pm8001_ha, EH, "I_T_L_Q clear task set[%x]\n",
1354 pm8001_dev->device_id);
1355 tmf_task.tmf = TMF_CLEAR_TASK_SET;
1356 return pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1357}
1358