2 * PMC-Sierra PM8001/8081/8088/8089 SAS/SATA based host adapters driver
4 * Copyright (c) 2008-2009 USI Co., Ltd.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions, and the following disclaimer,
12 * without modification.
13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
14 * substantially similar to the "NO WARRANTY" disclaimer below
15 * ("Disclaimer") and any redistribution must be conditioned upon
16 * including a substantially similar Disclaimer requirement for further
17 * binary redistribution.
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19 * of any contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
22 * Alternatively, this software may be distributed under the terms of the
23 * GNU General Public License ("GPL") version 2 as published by the Free
24 * Software Foundation.
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37 * POSSIBILITY OF SUCH DAMAGES.
41 #include <linux/slab.h>
42 #include "pm8001_sas.h"
45 * pm8001_find_tag - from sas task to find out tag that belongs to this task
46 * @task: the task sent to the LLDD
47 * @tag: the found tag associated with the task
49 static int pm8001_find_tag(struct sas_task *task, u32 *tag)
51 if (task->lldd_task) {
52 struct pm8001_ccb_info *ccb;
53 ccb = task->lldd_task;
61 * pm8001_tag_free - free the no more needed tag
62 * @pm8001_ha: our hba struct
63 * @tag: the found tag associated with the task
65 void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag)
67 void *bitmap = pm8001_ha->tags;
68 clear_bit(tag, bitmap);
72 * pm8001_tag_alloc - allocate a empty tag for task used.
73 * @pm8001_ha: our hba struct
74 * @tag_out: the found empty tag .
76 inline int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out)
79 void *bitmap = pm8001_ha->tags;
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;
89 spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags);
94 void pm8001_tag_init(struct pm8001_hba_info *pm8001_ha)
97 for (i = 0; i < pm8001_ha->tags_num; ++i)
98 pm8001_tag_free(pm8001_ha, i);
102 * pm8001_mem_alloc - allocate memory for pm8001.
104 * @virt_addr: the allocated virtual address
105 * @pphys_addr_hi: the physical address high byte address.
106 * @pphys_addr_lo: the physical address low byte address.
107 * @mem_size: memory size.
109 int pm8001_mem_alloc(struct pci_dev *pdev, void **virt_addr,
110 dma_addr_t *pphys_addr, u32 *pphys_addr_hi,
111 u32 *pphys_addr_lo, u32 mem_size, u32 align)
113 caddr_t mem_virt_alloc;
114 dma_addr_t mem_dma_handle;
116 u64 align_offset = 0;
118 align_offset = (dma_addr_t)align - 1;
119 mem_virt_alloc = pci_zalloc_consistent(pdev, mem_size + align,
121 if (!mem_virt_alloc) {
122 pm8001_printk("memory allocation error\n");
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);
133 * pm8001_find_ha_by_dev - from domain device which come from sas layer to
134 * find out our hba struct.
135 * @dev: the domain device which from sas layer.
138 struct pm8001_hba_info *pm8001_find_ha_by_dev(struct domain_device *dev)
140 struct sas_ha_struct *sha = dev->port->ha;
141 struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
146 * pm8001_phy_control - this function should be registered to
147 * sas_domain_function_template to provide libsas used, note: this is just
148 * control the HBA phy rather than other expander phy if you want control
149 * other phy, you should use SMP command.
150 * @sas_phy: which phy in HBA phys.
151 * @func: the operation.
152 * @funcdata: always NULL.
154 int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
157 int rc = 0, phy_id = sas_phy->id;
158 struct pm8001_hba_info *pm8001_ha = NULL;
159 struct sas_phy_linkrates *rates;
160 DECLARE_COMPLETION_ONSTACK(completion);
162 pm8001_ha = sas_phy->ha->lldd_ha;
163 pm8001_ha->phy[phy_id].enable_completion = &completion;
165 case PHY_FUNC_SET_LINK_RATE:
167 if (rates->minimum_linkrate) {
168 pm8001_ha->phy[phy_id].minimum_linkrate =
169 rates->minimum_linkrate;
171 if (rates->maximum_linkrate) {
172 pm8001_ha->phy[phy_id].maximum_linkrate =
173 rates->maximum_linkrate;
175 if (pm8001_ha->phy[phy_id].phy_state == 0) {
176 PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
177 wait_for_completion(&completion);
179 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
182 case PHY_FUNC_HARD_RESET:
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);
187 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
190 case PHY_FUNC_LINK_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);
195 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
198 case PHY_FUNC_RELEASE_SPINUP_HOLD:
199 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
202 case PHY_FUNC_DISABLE:
203 PM8001_CHIP_DISP->phy_stop_req(pm8001_ha, phy_id);
205 case PHY_FUNC_GET_EVENTS:
206 spin_lock_irqsave(&pm8001_ha->lock, flags);
207 if (pm8001_ha->chip_id == chip_8001) {
208 if (-1 == pm8001_bar4_shift(pm8001_ha,
209 (phy_id < 4) ? 0x30000 : 0x40000)) {
210 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
215 struct sas_phy *phy = sas_phy->phy;
216 uint32_t *qp = (uint32_t *)(((char *)
217 pm8001_ha->io_mem[2].memvirtaddr)
218 + 0x1034 + (0x4000 * (phy_id & 3)));
220 phy->invalid_dword_count = qp[0];
221 phy->running_disparity_error_count = qp[1];
222 phy->loss_of_dword_sync_count = qp[3];
223 phy->phy_reset_problem_count = qp[4];
225 if (pm8001_ha->chip_id == chip_8001)
226 pm8001_bar4_shift(pm8001_ha, 0);
227 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
237 * pm8001_scan_start - we should enable all HBA phys by sending the phy_start
239 * @shost: the scsi host data.
241 void pm8001_scan_start(struct Scsi_Host *shost)
244 struct pm8001_hba_info *pm8001_ha;
245 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
246 pm8001_ha = sha->lldd_ha;
247 /* SAS_RE_INITIALIZATION not available in SPCv/ve */
248 if (pm8001_ha->chip_id == chip_8001)
249 PM8001_CHIP_DISP->sas_re_init_req(pm8001_ha);
250 for (i = 0; i < pm8001_ha->chip->n_phy; ++i)
251 PM8001_CHIP_DISP->phy_start_req(pm8001_ha, i);
254 int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time)
256 struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost);
258 /* give the phy enabling interrupt event time to come in (1s
259 * is empirically about all it takes) */
262 /* Wait for discovery to finish */
268 * pm8001_task_prep_smp - the dispatcher function, prepare data for smp task
269 * @pm8001_ha: our hba card information
270 * @ccb: the ccb which attached to smp task
272 static int pm8001_task_prep_smp(struct pm8001_hba_info *pm8001_ha,
273 struct pm8001_ccb_info *ccb)
275 return PM8001_CHIP_DISP->smp_req(pm8001_ha, ccb);
278 u32 pm8001_get_ncq_tag(struct sas_task *task, u32 *tag)
280 struct ata_queued_cmd *qc = task->uldd_task;
282 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
283 qc->tf.command == ATA_CMD_FPDMA_READ) {
292 * pm8001_task_prep_ata - the dispatcher function, prepare data for sata task
293 * @pm8001_ha: our hba card information
294 * @ccb: the ccb which attached to sata task
296 static int pm8001_task_prep_ata(struct pm8001_hba_info *pm8001_ha,
297 struct pm8001_ccb_info *ccb)
299 return PM8001_CHIP_DISP->sata_req(pm8001_ha, ccb);
303 * pm8001_task_prep_ssp_tm - the dispatcher function, prepare task management data
304 * @pm8001_ha: our hba card information
305 * @ccb: the ccb which attached to TM
306 * @tmf: the task management IU
308 static int pm8001_task_prep_ssp_tm(struct pm8001_hba_info *pm8001_ha,
309 struct pm8001_ccb_info *ccb, struct pm8001_tmf_task *tmf)
311 return PM8001_CHIP_DISP->ssp_tm_req(pm8001_ha, ccb, tmf);
315 * pm8001_task_prep_ssp - the dispatcher function,prepare ssp data for ssp task
316 * @pm8001_ha: our hba card information
317 * @ccb: the ccb which attached to ssp task
319 static int pm8001_task_prep_ssp(struct pm8001_hba_info *pm8001_ha,
320 struct pm8001_ccb_info *ccb)
322 return PM8001_CHIP_DISP->ssp_io_req(pm8001_ha, ccb);
325 /* Find the local port id that's attached to this device */
326 static int sas_find_local_port_id(struct domain_device *dev)
328 struct domain_device *pdev = dev->parent;
330 /* Directly attached device */
332 return dev->port->id;
334 struct domain_device *pdev_p = pdev->parent;
336 return pdev->port->id;
343 * pm8001_task_exec - queue the task(ssp, smp && ata) to the hardware.
344 * @task: the task to be execute.
345 * @num: if can_queue great than 1, the task can be queued up. for SMP task,
346 * we always execute one one time.
347 * @gfp_flags: gfp_flags.
348 * @is_tmf: if it is task management task.
349 * @tmf: the task management IU
351 #define DEV_IS_GONE(pm8001_dev) \
352 ((!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED)))
353 static int pm8001_task_exec(struct sas_task *task,
354 gfp_t gfp_flags, int is_tmf, struct pm8001_tmf_task *tmf)
356 struct domain_device *dev = task->dev;
357 struct pm8001_hba_info *pm8001_ha;
358 struct pm8001_device *pm8001_dev;
359 struct pm8001_port *port = NULL;
360 struct sas_task *t = task;
361 struct pm8001_ccb_info *ccb;
362 u32 tag = 0xdeadbeef, rc, n_elem = 0;
363 unsigned long flags = 0;
366 struct task_status_struct *tsm = &t->task_status;
367 tsm->resp = SAS_TASK_UNDELIVERED;
368 tsm->stat = SAS_PHY_DOWN;
369 if (dev->dev_type != SAS_SATA_DEV)
373 pm8001_ha = pm8001_find_ha_by_dev(task->dev);
374 if (pm8001_ha->controller_fatal_error) {
375 struct task_status_struct *ts = &t->task_status;
377 ts->resp = SAS_TASK_UNDELIVERED;
381 PM8001_IO_DBG(pm8001_ha, pm8001_printk("pm8001_task_exec device \n "));
382 spin_lock_irqsave(&pm8001_ha->lock, flags);
385 pm8001_dev = dev->lldd_dev;
386 port = &pm8001_ha->port[sas_find_local_port_id(dev)];
387 if (DEV_IS_GONE(pm8001_dev) || !port->port_attached) {
388 if (sas_protocol_ata(t->task_proto)) {
389 struct task_status_struct *ts = &t->task_status;
390 ts->resp = SAS_TASK_UNDELIVERED;
391 ts->stat = SAS_PHY_DOWN;
393 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
395 spin_lock_irqsave(&pm8001_ha->lock, flags);
398 struct task_status_struct *ts = &t->task_status;
399 ts->resp = SAS_TASK_UNDELIVERED;
400 ts->stat = SAS_PHY_DOWN;
405 rc = pm8001_tag_alloc(pm8001_ha, &tag);
408 ccb = &pm8001_ha->ccb_info[tag];
410 if (!sas_protocol_ata(t->task_proto)) {
411 if (t->num_scatter) {
412 n_elem = dma_map_sg(pm8001_ha->dev,
422 n_elem = t->num_scatter;
426 ccb->n_elem = n_elem;
429 ccb->device = pm8001_dev;
430 switch (t->task_proto) {
431 case SAS_PROTOCOL_SMP:
432 rc = pm8001_task_prep_smp(pm8001_ha, ccb);
434 case SAS_PROTOCOL_SSP:
436 rc = pm8001_task_prep_ssp_tm(pm8001_ha,
439 rc = pm8001_task_prep_ssp(pm8001_ha, ccb);
441 case SAS_PROTOCOL_SATA:
442 case SAS_PROTOCOL_STP:
443 rc = pm8001_task_prep_ata(pm8001_ha, ccb);
446 dev_printk(KERN_ERR, pm8001_ha->dev,
447 "unknown sas_task proto: 0x%x\n",
454 PM8001_IO_DBG(pm8001_ha,
455 pm8001_printk("rc is %x\n", rc));
458 /* TODO: select normal or high priority */
459 spin_lock(&t->task_state_lock);
460 t->task_state_flags |= SAS_TASK_AT_INITIATOR;
461 spin_unlock(&t->task_state_lock);
462 pm8001_dev->running_req++;
468 pm8001_tag_free(pm8001_ha, tag);
470 dev_printk(KERN_ERR, pm8001_ha->dev, "pm8001 exec failed[%d]!\n", rc);
471 if (!sas_protocol_ata(t->task_proto))
473 dma_unmap_sg(pm8001_ha->dev, t->scatter, t->num_scatter,
476 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
481 * pm8001_queue_command - register for upper layer used, all IO commands sent
482 * to HBA are from this interface.
483 * @task: the task to be execute.
484 * @gfp_flags: gfp_flags
486 int pm8001_queue_command(struct sas_task *task, gfp_t gfp_flags)
488 return pm8001_task_exec(task, gfp_flags, 0, NULL);
492 * pm8001_ccb_task_free - free the sg for ssp and smp command, free the ccb.
493 * @pm8001_ha: our hba card information
494 * @ccb: the ccb which attached to ssp task
495 * @task: the task to be free.
496 * @ccb_idx: ccb index.
498 void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha,
499 struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx)
503 if (!sas_protocol_ata(task->task_proto))
505 dma_unmap_sg(pm8001_ha->dev, task->scatter,
506 task->num_scatter, task->data_dir);
508 switch (task->task_proto) {
509 case SAS_PROTOCOL_SMP:
510 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_resp, 1,
512 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_req, 1,
516 case SAS_PROTOCOL_SATA:
517 case SAS_PROTOCOL_STP:
518 case SAS_PROTOCOL_SSP:
523 task->lldd_task = NULL;
525 ccb->ccb_tag = 0xFFFFFFFF;
527 pm8001_tag_free(pm8001_ha, ccb_idx);
531 * pm8001_alloc_dev - find a empty pm8001_device
532 * @pm8001_ha: our hba card information
534 struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha)
537 for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) {
538 if (pm8001_ha->devices[dev].dev_type == SAS_PHY_UNUSED) {
539 pm8001_ha->devices[dev].id = dev;
540 return &pm8001_ha->devices[dev];
543 if (dev == PM8001_MAX_DEVICES) {
544 PM8001_FAIL_DBG(pm8001_ha,
545 pm8001_printk("max support %d devices, ignore ..\n",
546 PM8001_MAX_DEVICES));
551 * pm8001_find_dev - find a matching pm8001_device
552 * @pm8001_ha: our hba card information
554 struct pm8001_device *pm8001_find_dev(struct pm8001_hba_info *pm8001_ha,
558 for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) {
559 if (pm8001_ha->devices[dev].device_id == device_id)
560 return &pm8001_ha->devices[dev];
562 if (dev == PM8001_MAX_DEVICES) {
563 PM8001_FAIL_DBG(pm8001_ha, pm8001_printk("NO MATCHING "
564 "DEVICE FOUND !!!\n"));
569 static void pm8001_free_dev(struct pm8001_device *pm8001_dev)
571 u32 id = pm8001_dev->id;
572 memset(pm8001_dev, 0, sizeof(*pm8001_dev));
574 pm8001_dev->dev_type = SAS_PHY_UNUSED;
575 pm8001_dev->device_id = PM8001_MAX_DEVICES;
576 pm8001_dev->sas_device = NULL;
580 * pm8001_dev_found_notify - libsas notify a device is found.
581 * @dev: the device structure which sas layer used.
583 * when libsas find a sas domain device, it should tell the LLDD that
584 * device is found, and then LLDD register this device to HBA firmware
585 * by the command "OPC_INB_REG_DEV", after that the HBA will assign a
586 * device ID(according to device's sas address) and returned it to LLDD. From
587 * now on, we communicate with HBA FW with the device ID which HBA assigned
588 * rather than sas address. it is the necessary step for our HBA but it is
589 * the optional for other HBA driver.
591 static int pm8001_dev_found_notify(struct domain_device *dev)
593 unsigned long flags = 0;
595 struct pm8001_hba_info *pm8001_ha = NULL;
596 struct domain_device *parent_dev = dev->parent;
597 struct pm8001_device *pm8001_device;
598 DECLARE_COMPLETION_ONSTACK(completion);
600 pm8001_ha = pm8001_find_ha_by_dev(dev);
601 spin_lock_irqsave(&pm8001_ha->lock, flags);
603 pm8001_device = pm8001_alloc_dev(pm8001_ha);
604 if (!pm8001_device) {
608 pm8001_device->sas_device = dev;
609 dev->lldd_dev = pm8001_device;
610 pm8001_device->dev_type = dev->dev_type;
611 pm8001_device->dcompletion = &completion;
612 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
615 for (phy_id = 0; phy_id < parent_dev->ex_dev.num_phys;
617 phy = &parent_dev->ex_dev.ex_phy[phy_id];
618 if (SAS_ADDR(phy->attached_sas_addr)
619 == SAS_ADDR(dev->sas_addr)) {
620 pm8001_device->attached_phy = phy_id;
624 if (phy_id == parent_dev->ex_dev.num_phys) {
625 PM8001_FAIL_DBG(pm8001_ha,
626 pm8001_printk("Error: no attached dev:%016llx"
627 " at ex:%016llx.\n", SAS_ADDR(dev->sas_addr),
628 SAS_ADDR(parent_dev->sas_addr)));
632 if (dev->dev_type == SAS_SATA_DEV) {
633 pm8001_device->attached_phy =
634 dev->rphy->identify.phy_identifier;
635 flag = 1; /* directly sata*/
637 } /*register this device to HBA*/
638 PM8001_DISC_DBG(pm8001_ha, pm8001_printk("Found device\n"));
639 PM8001_CHIP_DISP->reg_dev_req(pm8001_ha, pm8001_device, flag);
640 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
641 wait_for_completion(&completion);
642 if (dev->dev_type == SAS_END_DEVICE)
644 pm8001_ha->flags = PM8001F_RUN_TIME;
647 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
651 int pm8001_dev_found(struct domain_device *dev)
653 return pm8001_dev_found_notify(dev);
656 void pm8001_task_done(struct sas_task *task)
658 if (!del_timer(&task->slow_task->timer))
660 complete(&task->slow_task->completion);
663 static void pm8001_tmf_timedout(unsigned long data)
665 struct sas_task *task = (struct sas_task *)data;
667 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
668 complete(&task->slow_task->completion);
671 #define PM8001_TASK_TIMEOUT 20
673 * pm8001_exec_internal_tmf_task - execute some task management commands.
674 * @dev: the wanted device.
675 * @tmf: which task management wanted to be take.
676 * @para_len: para_len.
677 * @parameter: ssp task parameter.
679 * when errors or exception happened, we may want to do something, for example
680 * abort the issued task which result in this execption, it is done by calling
681 * this function, note it is also with the task execute interface.
683 static int pm8001_exec_internal_tmf_task(struct domain_device *dev,
684 void *parameter, u32 para_len, struct pm8001_tmf_task *tmf)
687 struct sas_task *task = NULL;
688 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
689 struct pm8001_device *pm8001_dev = dev->lldd_dev;
690 DECLARE_COMPLETION_ONSTACK(completion_setstate);
692 for (retry = 0; retry < 3; retry++) {
693 task = sas_alloc_slow_task(GFP_KERNEL);
698 task->task_proto = dev->tproto;
699 memcpy(&task->ssp_task, parameter, para_len);
700 task->task_done = pm8001_task_done;
701 task->slow_task->timer.data = (unsigned long)task;
702 task->slow_task->timer.function = pm8001_tmf_timedout;
703 task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT*HZ;
704 add_timer(&task->slow_task->timer);
706 res = pm8001_task_exec(task, GFP_KERNEL, 1, tmf);
709 del_timer(&task->slow_task->timer);
710 PM8001_FAIL_DBG(pm8001_ha,
711 pm8001_printk("Executing internal task "
715 wait_for_completion(&task->slow_task->completion);
716 if (pm8001_ha->chip_id != chip_8001) {
717 pm8001_dev->setds_completion = &completion_setstate;
718 PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
720 wait_for_completion(&completion_setstate);
722 res = -TMF_RESP_FUNC_FAILED;
723 /* Even TMF timed out, return direct. */
724 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
725 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
726 PM8001_FAIL_DBG(pm8001_ha,
727 pm8001_printk("TMF task[%x]timeout.\n",
733 if (task->task_status.resp == SAS_TASK_COMPLETE &&
734 task->task_status.stat == SAM_STAT_GOOD) {
735 res = TMF_RESP_FUNC_COMPLETE;
739 if (task->task_status.resp == SAS_TASK_COMPLETE &&
740 task->task_status.stat == SAS_DATA_UNDERRUN) {
741 /* no error, but return the number of bytes of
743 res = task->task_status.residual;
747 if (task->task_status.resp == SAS_TASK_COMPLETE &&
748 task->task_status.stat == SAS_DATA_OVERRUN) {
749 PM8001_FAIL_DBG(pm8001_ha,
750 pm8001_printk("Blocked task error.\n"));
754 PM8001_EH_DBG(pm8001_ha,
755 pm8001_printk(" Task to dev %016llx response:"
756 "0x%x status 0x%x\n",
757 SAS_ADDR(dev->sas_addr),
758 task->task_status.resp,
759 task->task_status.stat));
765 BUG_ON(retry == 3 && task != NULL);
771 pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha,
772 struct pm8001_device *pm8001_dev, struct domain_device *dev, u32 flag,
777 struct pm8001_ccb_info *ccb;
778 struct sas_task *task = NULL;
780 for (retry = 0; retry < 3; retry++) {
781 task = sas_alloc_slow_task(GFP_KERNEL);
786 task->task_proto = dev->tproto;
787 task->task_done = pm8001_task_done;
788 task->slow_task->timer.data = (unsigned long)task;
789 task->slow_task->timer.function = pm8001_tmf_timedout;
790 task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT * HZ;
791 add_timer(&task->slow_task->timer);
793 res = pm8001_tag_alloc(pm8001_ha, &ccb_tag);
796 ccb = &pm8001_ha->ccb_info[ccb_tag];
797 ccb->device = pm8001_dev;
798 ccb->ccb_tag = ccb_tag;
802 res = PM8001_CHIP_DISP->task_abort(pm8001_ha,
803 pm8001_dev, flag, task_tag, ccb_tag);
806 del_timer(&task->slow_task->timer);
807 PM8001_FAIL_DBG(pm8001_ha,
808 pm8001_printk("Executing internal task "
812 wait_for_completion(&task->slow_task->completion);
813 res = TMF_RESP_FUNC_FAILED;
814 /* Even TMF timed out, return direct. */
815 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
816 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
817 PM8001_FAIL_DBG(pm8001_ha,
818 pm8001_printk("TMF task timeout.\n"));
823 if (task->task_status.resp == SAS_TASK_COMPLETE &&
824 task->task_status.stat == SAM_STAT_GOOD) {
825 res = TMF_RESP_FUNC_COMPLETE;
829 PM8001_EH_DBG(pm8001_ha,
830 pm8001_printk(" Task to dev %016llx response: "
831 "0x%x status 0x%x\n",
832 SAS_ADDR(dev->sas_addr),
833 task->task_status.resp,
834 task->task_status.stat));
840 BUG_ON(retry == 3 && task != NULL);
846 * pm8001_dev_gone_notify - see the comments for "pm8001_dev_found_notify"
847 * @dev: the device structure which sas layer used.
849 static void pm8001_dev_gone_notify(struct domain_device *dev)
851 unsigned long flags = 0;
852 struct pm8001_hba_info *pm8001_ha;
853 struct pm8001_device *pm8001_dev = dev->lldd_dev;
855 pm8001_ha = pm8001_find_ha_by_dev(dev);
856 spin_lock_irqsave(&pm8001_ha->lock, flags);
858 u32 device_id = pm8001_dev->device_id;
860 PM8001_DISC_DBG(pm8001_ha,
861 pm8001_printk("found dev[%d:%x] is gone.\n",
862 pm8001_dev->device_id, pm8001_dev->dev_type));
863 if (pm8001_dev->running_req) {
864 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
865 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
867 spin_lock_irqsave(&pm8001_ha->lock, flags);
869 PM8001_CHIP_DISP->dereg_dev_req(pm8001_ha, device_id);
870 pm8001_free_dev(pm8001_dev);
872 PM8001_DISC_DBG(pm8001_ha,
873 pm8001_printk("Found dev has gone.\n"));
875 dev->lldd_dev = NULL;
876 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
879 void pm8001_dev_gone(struct domain_device *dev)
881 pm8001_dev_gone_notify(dev);
884 static int pm8001_issue_ssp_tmf(struct domain_device *dev,
885 u8 *lun, struct pm8001_tmf_task *tmf)
887 struct sas_ssp_task ssp_task;
888 if (!(dev->tproto & SAS_PROTOCOL_SSP))
889 return TMF_RESP_FUNC_ESUPP;
891 strncpy((u8 *)&ssp_task.LUN, lun, 8);
892 return pm8001_exec_internal_tmf_task(dev, &ssp_task, sizeof(ssp_task),
896 /* retry commands by ha, by task and/or by device */
897 void pm8001_open_reject_retry(
898 struct pm8001_hba_info *pm8001_ha,
899 struct sas_task *task_to_close,
900 struct pm8001_device *device_to_close)
905 if (pm8001_ha == NULL)
908 spin_lock_irqsave(&pm8001_ha->lock, flags);
910 for (i = 0; i < PM8001_MAX_CCB; i++) {
911 struct sas_task *task;
912 struct task_status_struct *ts;
913 struct pm8001_device *pm8001_dev;
914 unsigned long flags1;
916 struct pm8001_ccb_info *ccb = &pm8001_ha->ccb_info[i];
918 pm8001_dev = ccb->device;
919 if (!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED))
921 if (!device_to_close) {
922 uintptr_t d = (uintptr_t)pm8001_dev
923 - (uintptr_t)&pm8001_ha->devices;
924 if (((d % sizeof(*pm8001_dev)) != 0)
925 || ((d / sizeof(*pm8001_dev)) >= PM8001_MAX_DEVICES))
927 } else if (pm8001_dev != device_to_close)
930 if (!tag || (tag == 0xFFFFFFFF))
933 if (!task || !task->task_done)
935 if (task_to_close && (task != task_to_close))
937 ts = &task->task_status;
938 ts->resp = SAS_TASK_COMPLETE;
939 /* Force the midlayer to retry */
940 ts->stat = SAS_OPEN_REJECT;
941 ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
943 pm8001_dev->running_req--;
944 spin_lock_irqsave(&task->task_state_lock, flags1);
945 task->task_state_flags &= ~SAS_TASK_STATE_PENDING;
946 task->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
947 task->task_state_flags |= SAS_TASK_STATE_DONE;
948 if (unlikely((task->task_state_flags
949 & SAS_TASK_STATE_ABORTED))) {
950 spin_unlock_irqrestore(&task->task_state_lock,
952 pm8001_ccb_task_free(pm8001_ha, task, ccb, tag);
954 spin_unlock_irqrestore(&task->task_state_lock,
956 pm8001_ccb_task_free(pm8001_ha, task, ccb, tag);
957 mb();/* in order to force CPU ordering */
958 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
959 task->task_done(task);
960 spin_lock_irqsave(&pm8001_ha->lock, flags);
964 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
968 * Standard mandates link reset for ATA (type 0) and hard reset for
969 * SSP (type 1) , only for RECOVERY
971 int pm8001_I_T_nexus_reset(struct domain_device *dev)
973 int rc = TMF_RESP_FUNC_FAILED;
974 struct pm8001_device *pm8001_dev;
975 struct pm8001_hba_info *pm8001_ha;
978 if (!dev || !dev->lldd_dev)
981 pm8001_dev = dev->lldd_dev;
982 pm8001_ha = pm8001_find_ha_by_dev(dev);
983 phy = sas_get_local_phy(dev);
985 if (dev_is_sata(dev)) {
986 if (scsi_is_sas_phy_local(phy)) {
990 rc = sas_phy_reset(phy, 1);
992 PM8001_EH_DBG(pm8001_ha,
993 pm8001_printk("phy reset failed for device %x\n"
994 "with rc %d\n", pm8001_dev->device_id, rc));
995 rc = TMF_RESP_FUNC_FAILED;
999 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
1002 PM8001_EH_DBG(pm8001_ha,
1003 pm8001_printk("task abort failed %x\n"
1004 "with rc %d\n", pm8001_dev->device_id, rc));
1005 rc = TMF_RESP_FUNC_FAILED;
1008 rc = sas_phy_reset(phy, 1);
1011 PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n",
1012 pm8001_dev->device_id, rc));
1014 sas_put_local_phy(phy);
1019 * This function handle the IT_NEXUS_XXX event or completion
1020 * status code for SSP/SATA/SMP I/O request.
1022 int pm8001_I_T_nexus_event_handler(struct domain_device *dev)
1024 int rc = TMF_RESP_FUNC_FAILED;
1025 struct pm8001_device *pm8001_dev;
1026 struct pm8001_hba_info *pm8001_ha;
1027 struct sas_phy *phy;
1030 if (!dev || !dev->lldd_dev)
1033 pm8001_dev = dev->lldd_dev;
1034 device_id = pm8001_dev->device_id;
1035 pm8001_ha = pm8001_find_ha_by_dev(dev);
1037 PM8001_EH_DBG(pm8001_ha,
1038 pm8001_printk("I_T_Nexus handler invoked !!"));
1040 phy = sas_get_local_phy(dev);
1042 if (dev_is_sata(dev)) {
1043 DECLARE_COMPLETION_ONSTACK(completion_setstate);
1044 if (scsi_is_sas_phy_local(phy)) {
1048 /* send internal ssp/sata/smp abort command to FW */
1049 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
1053 /* deregister the target device */
1054 pm8001_dev_gone_notify(dev);
1057 /*send phy reset to hard reset target */
1058 rc = sas_phy_reset(phy, 1);
1060 pm8001_dev->setds_completion = &completion_setstate;
1062 wait_for_completion(&completion_setstate);
1064 /* send internal ssp/sata/smp abort command to FW */
1065 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
1069 /* deregister the target device */
1070 pm8001_dev_gone_notify(dev);
1073 /*send phy reset to hard reset target */
1074 rc = sas_phy_reset(phy, 1);
1077 PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n",
1078 pm8001_dev->device_id, rc));
1080 sas_put_local_phy(phy);
1084 /* mandatory SAM-3, the task reset the specified LUN*/
1085 int pm8001_lu_reset(struct domain_device *dev, u8 *lun)
1087 int rc = TMF_RESP_FUNC_FAILED;
1088 struct pm8001_tmf_task tmf_task;
1089 struct pm8001_device *pm8001_dev = dev->lldd_dev;
1090 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
1091 DECLARE_COMPLETION_ONSTACK(completion_setstate);
1092 if (dev_is_sata(dev)) {
1093 struct sas_phy *phy = sas_get_local_phy(dev);
1094 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
1096 rc = sas_phy_reset(phy, 1);
1097 sas_put_local_phy(phy);
1098 pm8001_dev->setds_completion = &completion_setstate;
1099 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
1101 wait_for_completion(&completion_setstate);
1103 tmf_task.tmf = TMF_LU_RESET;
1104 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1106 /* If failed, fall-through I_T_Nexus reset */
1107 PM8001_EH_DBG(pm8001_ha, pm8001_printk("for device[%x]:rc=%d\n",
1108 pm8001_dev->device_id, rc));
1112 /* optional SAM-3 */
1113 int pm8001_query_task(struct sas_task *task)
1115 u32 tag = 0xdeadbeef;
1117 struct scsi_lun lun;
1118 struct pm8001_tmf_task tmf_task;
1119 int rc = TMF_RESP_FUNC_FAILED;
1120 if (unlikely(!task || !task->lldd_task || !task->dev))
1123 if (task->task_proto & SAS_PROTOCOL_SSP) {
1124 struct scsi_cmnd *cmnd = task->uldd_task;
1125 struct domain_device *dev = task->dev;
1126 struct pm8001_hba_info *pm8001_ha =
1127 pm8001_find_ha_by_dev(dev);
1129 int_to_scsilun(cmnd->device->lun, &lun);
1130 rc = pm8001_find_tag(task, &tag);
1132 rc = TMF_RESP_FUNC_FAILED;
1135 PM8001_EH_DBG(pm8001_ha, pm8001_printk("Query:["));
1136 for (i = 0; i < 16; i++)
1137 printk(KERN_INFO "%02x ", cmnd->cmnd[i]);
1138 printk(KERN_INFO "]\n");
1139 tmf_task.tmf = TMF_QUERY_TASK;
1140 tmf_task.tag_of_task_to_be_managed = tag;
1142 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1144 /* The task is still in Lun, release it then */
1145 case TMF_RESP_FUNC_SUCC:
1146 PM8001_EH_DBG(pm8001_ha,
1147 pm8001_printk("The task is still in Lun\n"));
1149 /* The task is not in Lun or failed, reset the phy */
1150 case TMF_RESP_FUNC_FAILED:
1151 case TMF_RESP_FUNC_COMPLETE:
1152 PM8001_EH_DBG(pm8001_ha,
1153 pm8001_printk("The task is not in Lun or failed,"
1154 " reset the phy\n"));
1158 pm8001_printk(":rc= %d\n", rc);
1162 /* mandatory SAM-3, still need free task/ccb info, abord the specified task */
1163 int pm8001_abort_task(struct sas_task *task)
1165 unsigned long flags;
1166 u32 tag = 0xdeadbeef;
1168 struct domain_device *dev ;
1169 struct pm8001_hba_info *pm8001_ha = NULL;
1170 struct pm8001_ccb_info *ccb;
1171 struct scsi_lun lun;
1172 struct pm8001_device *pm8001_dev;
1173 struct pm8001_tmf_task tmf_task;
1174 int rc = TMF_RESP_FUNC_FAILED;
1175 if (unlikely(!task || !task->lldd_task || !task->dev))
1177 spin_lock_irqsave(&task->task_state_lock, flags);
1178 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1179 spin_unlock_irqrestore(&task->task_state_lock, flags);
1180 rc = TMF_RESP_FUNC_COMPLETE;
1183 spin_unlock_irqrestore(&task->task_state_lock, flags);
1184 if (task->task_proto & SAS_PROTOCOL_SSP) {
1185 struct scsi_cmnd *cmnd = task->uldd_task;
1187 ccb = task->lldd_task;
1188 pm8001_dev = dev->lldd_dev;
1189 pm8001_ha = pm8001_find_ha_by_dev(dev);
1190 int_to_scsilun(cmnd->device->lun, &lun);
1191 rc = pm8001_find_tag(task, &tag);
1193 printk(KERN_INFO "No such tag in %s\n", __func__);
1194 rc = TMF_RESP_FUNC_FAILED;
1197 device_id = pm8001_dev->device_id;
1198 PM8001_EH_DBG(pm8001_ha,
1199 pm8001_printk("abort io to deviceid= %d\n", device_id));
1200 tmf_task.tmf = TMF_ABORT_TASK;
1201 tmf_task.tag_of_task_to_be_managed = tag;
1202 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1203 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1204 pm8001_dev->sas_device, 0, tag);
1205 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1206 task->task_proto & SAS_PROTOCOL_STP) {
1208 pm8001_dev = dev->lldd_dev;
1209 pm8001_ha = pm8001_find_ha_by_dev(dev);
1210 rc = pm8001_find_tag(task, &tag);
1212 printk(KERN_INFO "No such tag in %s\n", __func__);
1213 rc = TMF_RESP_FUNC_FAILED;
1216 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1217 pm8001_dev->sas_device, 0, tag);
1218 } else if (task->task_proto & SAS_PROTOCOL_SMP) {
1221 pm8001_dev = dev->lldd_dev;
1222 pm8001_ha = pm8001_find_ha_by_dev(dev);
1223 rc = pm8001_find_tag(task, &tag);
1225 printk(KERN_INFO "No such tag in %s\n", __func__);
1226 rc = TMF_RESP_FUNC_FAILED;
1229 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1230 pm8001_dev->sas_device, 0, tag);
1234 if (rc != TMF_RESP_FUNC_COMPLETE)
1235 pm8001_printk("rc= %d\n", rc);
1239 int pm8001_abort_task_set(struct domain_device *dev, u8 *lun)
1241 int rc = TMF_RESP_FUNC_FAILED;
1242 struct pm8001_tmf_task tmf_task;
1244 tmf_task.tmf = TMF_ABORT_TASK_SET;
1245 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1249 int pm8001_clear_aca(struct domain_device *dev, u8 *lun)
1251 int rc = TMF_RESP_FUNC_FAILED;
1252 struct pm8001_tmf_task tmf_task;
1254 tmf_task.tmf = TMF_CLEAR_ACA;
1255 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1260 int pm8001_clear_task_set(struct domain_device *dev, u8 *lun)
1262 int rc = TMF_RESP_FUNC_FAILED;
1263 struct pm8001_tmf_task tmf_task;
1264 struct pm8001_device *pm8001_dev = dev->lldd_dev;
1265 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
1267 PM8001_EH_DBG(pm8001_ha,
1268 pm8001_printk("I_T_L_Q clear task set[%x]\n",
1269 pm8001_dev->device_id));
1270 tmf_task.tmf = TMF_CLEAR_TASK_SET;
1271 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);