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Linux 4.19.133
[linux/fpc-iii.git] / drivers / scsi / pm8001 / pm8001_sas.c
blob5be4212312cb02401961e964c4b0e95634320c3b
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 */
49 static 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_free - free the no more needed tag
62 * @pm8001_ha: our hba struct
63 * @tag: the found tag associated with the task
64 */
65 void 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 * pm8001_tag_alloc - allocate a empty tag for task used.
73 * @pm8001_ha: our hba struct
74 * @tag_out: the found empty tag .
75 */
76 inline 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
94 void 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 * pm8001_mem_alloc - allocate memory for pm8001.
103 * @pdev: pci device.
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.
108 */
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)
112 {
113 caddr_t mem_virt_alloc;
114 dma_addr_t mem_dma_handle;
115 u64 phys_align;
116 u64 align_offset = 0;
117 if (align)
118 align_offset = (dma_addr_t)align - 1;
119 mem_virt_alloc = pci_zalloc_consistent(pdev, mem_size + align,
120 &mem_dma_handle);
121 if (!mem_virt_alloc) {
122 pm8001_printk("memory allocation error\n");
123 return -1;
124 }
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 * 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.
136 */
137 static
138 struct pm8001_hba_info *pm8001_find_ha_by_dev(struct domain_device *dev)
139 {
140 struct sas_ha_struct *sha = dev->port->ha;
141 struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
142 return pm8001_ha;
143 }
144
145 /**
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.
153 */
154 int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
155 void *funcdata)
156 {
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);
161 unsigned long flags;
162 pm8001_ha = sas_phy->ha->lldd_ha;
163 pm8001_ha->phy[phy_id].enable_completion = &completion;
164 switch (func) {
165 case PHY_FUNC_SET_LINK_RATE:
166 rates = funcdata;
167 if (rates->minimum_linkrate) {
168 pm8001_ha->phy[phy_id].minimum_linkrate =
169 rates->minimum_linkrate;
170 }
171 if (rates->maximum_linkrate) {
172 pm8001_ha->phy[phy_id].maximum_linkrate =
173 rates->maximum_linkrate;
174 }
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);
178 }
179 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
180 PHY_LINK_RESET);
181 break;
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);
186 }
187 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
188 PHY_HARD_RESET);
189 break;
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);
194 }
195 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
196 PHY_LINK_RESET);
197 break;
198 case PHY_FUNC_RELEASE_SPINUP_HOLD:
199 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
200 PHY_LINK_RESET);
201 break;
202 case PHY_FUNC_DISABLE:
203 PM8001_CHIP_DISP->phy_stop_req(pm8001_ha, phy_id);
204 break;
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);
211 return -EINVAL;
212 }
213 }
214 {
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)));
219
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];
224 }
225 if (pm8001_ha->chip_id == chip_8001)
226 pm8001_bar4_shift(pm8001_ha, 0);
227 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
228 return 0;
229 default:
230 rc = -EOPNOTSUPP;
231 }
232 msleep(300);
233 return rc;
234 }
235
236 /**
237 * pm8001_scan_start - we should enable all HBA phys by sending the phy_start
238 * command to HBA.
239 * @shost: the scsi host data.
240 */
241 void pm8001_scan_start(struct Scsi_Host *shost)
242 {
243 int i;
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);
252 }
253
254 int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time)
255 {
256 struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost);
257
258 /* give the phy enabling interrupt event time to come in (1s
259 * is empirically about all it takes) */
260 if (time < HZ)
261 return 0;
262 /* Wait for discovery to finish */
263 sas_drain_work(ha);
264 return 1;
265 }
266
267 /**
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
271 */
272 static int pm8001_task_prep_smp(struct pm8001_hba_info *pm8001_ha,
273 struct pm8001_ccb_info *ccb)
274 {
275 return PM8001_CHIP_DISP->smp_req(pm8001_ha, ccb);
276 }
277
278 u32 pm8001_get_ncq_tag(struct sas_task *task, u32 *tag)
279 {
280 struct ata_queued_cmd *qc = task->uldd_task;
281 if (qc) {
282 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
283 qc->tf.command == ATA_CMD_FPDMA_READ ||
284 qc->tf.command == ATA_CMD_FPDMA_RECV ||
285 qc->tf.command == ATA_CMD_FPDMA_SEND ||
286 qc->tf.command == ATA_CMD_NCQ_NON_DATA) {
287 *tag = qc->tag;
288 return 1;
289 }
290 }
291 return 0;
292 }
293
294 /**
295 * pm8001_task_prep_ata - the dispatcher function, prepare data for sata task
296 * @pm8001_ha: our hba card information
297 * @ccb: the ccb which attached to sata task
298 */
299 static int pm8001_task_prep_ata(struct pm8001_hba_info *pm8001_ha,
300 struct pm8001_ccb_info *ccb)
301 {
302 return PM8001_CHIP_DISP->sata_req(pm8001_ha, ccb);
303 }
304
305 /**
306 * pm8001_task_prep_ssp_tm - the dispatcher function, prepare task management data
307 * @pm8001_ha: our hba card information
308 * @ccb: the ccb which attached to TM
309 * @tmf: the task management IU
310 */
311 static int pm8001_task_prep_ssp_tm(struct pm8001_hba_info *pm8001_ha,
312 struct pm8001_ccb_info *ccb, struct pm8001_tmf_task *tmf)
313 {
314 return PM8001_CHIP_DISP->ssp_tm_req(pm8001_ha, ccb, tmf);
315 }
316
317 /**
318 * pm8001_task_prep_ssp - the dispatcher function,prepare ssp data for ssp task
319 * @pm8001_ha: our hba card information
320 * @ccb: the ccb which attached to ssp task
321 */
322 static int pm8001_task_prep_ssp(struct pm8001_hba_info *pm8001_ha,
323 struct pm8001_ccb_info *ccb)
324 {
325 return PM8001_CHIP_DISP->ssp_io_req(pm8001_ha, ccb);
326 }
327
328 /* Find the local port id that's attached to this device */
329 static int sas_find_local_port_id(struct domain_device *dev)
330 {
331 struct domain_device *pdev = dev->parent;
332
333 /* Directly attached device */
334 if (!pdev)
335 return dev->port->id;
336 while (pdev) {
337 struct domain_device *pdev_p = pdev->parent;
338 if (!pdev_p)
339 return pdev->port->id;
340 pdev = pdev->parent;
341 }
342 return 0;
343 }
344
345 /**
346 * pm8001_task_exec - queue the task(ssp, smp && ata) to the hardware.
347 * @task: the task to be execute.
348 * @num: if can_queue great than 1, the task can be queued up. for SMP task,
349 * we always execute one one time.
350 * @gfp_flags: gfp_flags.
351 * @is_tmf: if it is task management task.
352 * @tmf: the task management IU
353 */
354 #define DEV_IS_GONE(pm8001_dev) \
355 ((!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED)))
356 static int pm8001_task_exec(struct sas_task *task,
357 gfp_t gfp_flags, int is_tmf, struct pm8001_tmf_task *tmf)
358 {
359 struct domain_device *dev = task->dev;
360 struct pm8001_hba_info *pm8001_ha;
361 struct pm8001_device *pm8001_dev;
362 struct pm8001_port *port = NULL;
363 struct sas_task *t = task;
364 struct pm8001_ccb_info *ccb;
365 u32 tag = 0xdeadbeef, rc, n_elem = 0;
366 unsigned long flags = 0;
367
368 if (!dev->port) {
369 struct task_status_struct *tsm = &t->task_status;
370 tsm->resp = SAS_TASK_UNDELIVERED;
371 tsm->stat = SAS_PHY_DOWN;
372 if (dev->dev_type != SAS_SATA_DEV)
373 t->task_done(t);
374 return 0;
375 }
376 pm8001_ha = pm8001_find_ha_by_dev(task->dev);
377 if (pm8001_ha->controller_fatal_error) {
378 struct task_status_struct *ts = &t->task_status;
379
380 ts->resp = SAS_TASK_UNDELIVERED;
381 t->task_done(t);
382 return 0;
383 }
384 PM8001_IO_DBG(pm8001_ha, pm8001_printk("pm8001_task_exec device \n "));
385 spin_lock_irqsave(&pm8001_ha->lock, flags);
386 do {
387 dev = t->dev;
388 pm8001_dev = dev->lldd_dev;
389 port = &pm8001_ha->port[sas_find_local_port_id(dev)];
390 if (DEV_IS_GONE(pm8001_dev) || !port->port_attached) {
391 if (sas_protocol_ata(t->task_proto)) {
392 struct task_status_struct *ts = &t->task_status;
393 ts->resp = SAS_TASK_UNDELIVERED;
394 ts->stat = SAS_PHY_DOWN;
395
396 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
397 t->task_done(t);
398 spin_lock_irqsave(&pm8001_ha->lock, flags);
399 continue;
400 } else {
401 struct task_status_struct *ts = &t->task_status;
402 ts->resp = SAS_TASK_UNDELIVERED;
403 ts->stat = SAS_PHY_DOWN;
404 t->task_done(t);
405 continue;
406 }
407 }
408 rc = pm8001_tag_alloc(pm8001_ha, &tag);
409 if (rc)
410 goto err_out;
411 ccb = &pm8001_ha->ccb_info[tag];
412
413 if (!sas_protocol_ata(t->task_proto)) {
414 if (t->num_scatter) {
415 n_elem = dma_map_sg(pm8001_ha->dev,
416 t->scatter,
417 t->num_scatter,
418 t->data_dir);
419 if (!n_elem) {
420 rc = -ENOMEM;
421 goto err_out_tag;
422 }
423 }
424 } else {
425 n_elem = t->num_scatter;
426 }
427
428 t->lldd_task = ccb;
429 ccb->n_elem = n_elem;
430 ccb->ccb_tag = tag;
431 ccb->task = t;
432 ccb->device = pm8001_dev;
433 switch (t->task_proto) {
434 case SAS_PROTOCOL_SMP:
435 rc = pm8001_task_prep_smp(pm8001_ha, ccb);
436 break;
437 case SAS_PROTOCOL_SSP:
438 if (is_tmf)
439 rc = pm8001_task_prep_ssp_tm(pm8001_ha,
440 ccb, tmf);
441 else
442 rc = pm8001_task_prep_ssp(pm8001_ha, ccb);
443 break;
444 case SAS_PROTOCOL_SATA:
445 case SAS_PROTOCOL_STP:
446 rc = pm8001_task_prep_ata(pm8001_ha, ccb);
447 break;
448 default:
449 dev_printk(KERN_ERR, pm8001_ha->dev,
450 "unknown sas_task proto: 0x%x\n",
451 t->task_proto);
452 rc = -EINVAL;
453 break;
454 }
455
456 if (rc) {
457 PM8001_IO_DBG(pm8001_ha,
458 pm8001_printk("rc is %x\n", rc));
459 goto err_out_tag;
460 }
461 /* TODO: select normal or high priority */
462 spin_lock(&t->task_state_lock);
463 t->task_state_flags |= SAS_TASK_AT_INITIATOR;
464 spin_unlock(&t->task_state_lock);
465 pm8001_dev->running_req++;
466 } while (0);
467 rc = 0;
468 goto out_done;
469
470 err_out_tag:
471 pm8001_tag_free(pm8001_ha, tag);
472 err_out:
473 dev_printk(KERN_ERR, pm8001_ha->dev, "pm8001 exec failed[%d]!\n", rc);
474 if (!sas_protocol_ata(t->task_proto))
475 if (n_elem)
476 dma_unmap_sg(pm8001_ha->dev, t->scatter, t->num_scatter,
477 t->data_dir);
478 out_done:
479 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
480 return rc;
481 }
482
483 /**
484 * pm8001_queue_command - register for upper layer used, all IO commands sent
485 * to HBA are from this interface.
486 * @task: the task to be execute.
487 * @gfp_flags: gfp_flags
488 */
489 int pm8001_queue_command(struct sas_task *task, gfp_t gfp_flags)
490 {
491 return pm8001_task_exec(task, gfp_flags, 0, NULL);
492 }
493
494 /**
495 * pm8001_ccb_task_free - free the sg for ssp and smp command, free the ccb.
496 * @pm8001_ha: our hba card information
497 * @ccb: the ccb which attached to ssp task
498 * @task: the task to be free.
499 * @ccb_idx: ccb index.
500 */
501 void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha,
502 struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx)
503 {
504 if (!ccb->task)
505 return;
506 if (!sas_protocol_ata(task->task_proto))
507 if (ccb->n_elem)
508 dma_unmap_sg(pm8001_ha->dev, task->scatter,
509 task->num_scatter, task->data_dir);
510
511 switch (task->task_proto) {
512 case SAS_PROTOCOL_SMP:
513 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_resp, 1,
514 PCI_DMA_FROMDEVICE);
515 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_req, 1,
516 PCI_DMA_TODEVICE);
517 break;
518
519 case SAS_PROTOCOL_SATA:
520 case SAS_PROTOCOL_STP:
521 case SAS_PROTOCOL_SSP:
522 default:
523 /* do nothing */
524 break;
525 }
526 task->lldd_task = NULL;
527 ccb->task = NULL;
528 ccb->ccb_tag = 0xFFFFFFFF;
529 ccb->open_retry = 0;
530 pm8001_tag_free(pm8001_ha, ccb_idx);
531 }
532
533 /**
534 * pm8001_alloc_dev - find a empty pm8001_device
535 * @pm8001_ha: our hba card information
536 */
537 static struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha)
538 {
539 u32 dev;
540 for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) {
541 if (pm8001_ha->devices[dev].dev_type == SAS_PHY_UNUSED) {
542 pm8001_ha->devices[dev].id = dev;
543 return &pm8001_ha->devices[dev];
544 }
545 }
546 if (dev == PM8001_MAX_DEVICES) {
547 PM8001_FAIL_DBG(pm8001_ha,
548 pm8001_printk("max support %d devices, ignore ..\n",
549 PM8001_MAX_DEVICES));
550 }
551 return NULL;
552 }
553 /**
554 * pm8001_find_dev - find a matching pm8001_device
555 * @pm8001_ha: our hba card information
556 */
557 struct pm8001_device *pm8001_find_dev(struct pm8001_hba_info *pm8001_ha,
558 u32 device_id)
559 {
560 u32 dev;
561 for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) {
562 if (pm8001_ha->devices[dev].device_id == device_id)
563 return &pm8001_ha->devices[dev];
564 }
565 if (dev == PM8001_MAX_DEVICES) {
566 PM8001_FAIL_DBG(pm8001_ha, pm8001_printk("NO MATCHING "
567 "DEVICE FOUND !!!\n"));
568 }
569 return NULL;
570 }
571
572 static void pm8001_free_dev(struct pm8001_device *pm8001_dev)
573 {
574 u32 id = pm8001_dev->id;
575 memset(pm8001_dev, 0, sizeof(*pm8001_dev));
576 pm8001_dev->id = id;
577 pm8001_dev->dev_type = SAS_PHY_UNUSED;
578 pm8001_dev->device_id = PM8001_MAX_DEVICES;
579 pm8001_dev->sas_device = NULL;
580 }
581
582 /**
583 * pm8001_dev_found_notify - libsas notify a device is found.
584 * @dev: the device structure which sas layer used.
585 *
586 * when libsas find a sas domain device, it should tell the LLDD that
587 * device is found, and then LLDD register this device to HBA firmware
588 * by the command "OPC_INB_REG_DEV", after that the HBA will assign a
589 * device ID(according to device's sas address) and returned it to LLDD. From
590 * now on, we communicate with HBA FW with the device ID which HBA assigned
591 * rather than sas address. it is the necessary step for our HBA but it is
592 * the optional for other HBA driver.
593 */
594 static int pm8001_dev_found_notify(struct domain_device *dev)
595 {
596 unsigned long flags = 0;
597 int res = 0;
598 struct pm8001_hba_info *pm8001_ha = NULL;
599 struct domain_device *parent_dev = dev->parent;
600 struct pm8001_device *pm8001_device;
601 DECLARE_COMPLETION_ONSTACK(completion);
602 u32 flag = 0;
603 pm8001_ha = pm8001_find_ha_by_dev(dev);
604 spin_lock_irqsave(&pm8001_ha->lock, flags);
605
606 pm8001_device = pm8001_alloc_dev(pm8001_ha);
607 if (!pm8001_device) {
608 res = -1;
609 goto found_out;
610 }
611 pm8001_device->sas_device = dev;
612 dev->lldd_dev = pm8001_device;
613 pm8001_device->dev_type = dev->dev_type;
614 pm8001_device->dcompletion = &completion;
615 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
616 int phy_id;
617 struct ex_phy *phy;
618 for (phy_id = 0; phy_id < parent_dev->ex_dev.num_phys;
619 phy_id++) {
620 phy = &parent_dev->ex_dev.ex_phy[phy_id];
621 if (SAS_ADDR(phy->attached_sas_addr)
622 == SAS_ADDR(dev->sas_addr)) {
623 pm8001_device->attached_phy = phy_id;
624 break;
625 }
626 }
627 if (phy_id == parent_dev->ex_dev.num_phys) {
628 PM8001_FAIL_DBG(pm8001_ha,
629 pm8001_printk("Error: no attached dev:%016llx"
630 " at ex:%016llx.\n", SAS_ADDR(dev->sas_addr),
631 SAS_ADDR(parent_dev->sas_addr)));
632 res = -1;
633 }
634 } else {
635 if (dev->dev_type == SAS_SATA_DEV) {
636 pm8001_device->attached_phy =
637 dev->rphy->identify.phy_identifier;
638 flag = 1; /* directly sata*/
639 }
640 } /*register this device to HBA*/
641 PM8001_DISC_DBG(pm8001_ha, pm8001_printk("Found device\n"));
642 PM8001_CHIP_DISP->reg_dev_req(pm8001_ha, pm8001_device, flag);
643 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
644 wait_for_completion(&completion);
645 if (dev->dev_type == SAS_END_DEVICE)
646 msleep(50);
647 pm8001_ha->flags = PM8001F_RUN_TIME;
648 return 0;
649 found_out:
650 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
651 return res;
652 }
653
654 int pm8001_dev_found(struct domain_device *dev)
655 {
656 return pm8001_dev_found_notify(dev);
657 }
658
659 void pm8001_task_done(struct sas_task *task)
660 {
661 if (!del_timer(&task->slow_task->timer))
662 return;
663 complete(&task->slow_task->completion);
664 }
665
666 static void pm8001_tmf_timedout(struct timer_list *t)
667 {
668 struct sas_task_slow *slow = from_timer(slow, t, timer);
669 struct sas_task *task = slow->task;
670
671 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
672 complete(&task->slow_task->completion);
673 }
674
675 #define PM8001_TASK_TIMEOUT 20
676 /**
677 * pm8001_exec_internal_tmf_task - execute some task management commands.
678 * @dev: the wanted device.
679 * @tmf: which task management wanted to be take.
680 * @para_len: para_len.
681 * @parameter: ssp task parameter.
682 *
683 * when errors or exception happened, we may want to do something, for example
684 * abort the issued task which result in this execption, it is done by calling
685 * this function, note it is also with the task execute interface.
686 */
687 static int pm8001_exec_internal_tmf_task(struct domain_device *dev,
688 void *parameter, u32 para_len, struct pm8001_tmf_task *tmf)
689 {
690 int res, retry;
691 struct sas_task *task = NULL;
692 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
693 struct pm8001_device *pm8001_dev = dev->lldd_dev;
694 DECLARE_COMPLETION_ONSTACK(completion_setstate);
695
696 for (retry = 0; retry < 3; retry++) {
697 task = sas_alloc_slow_task(GFP_KERNEL);
698 if (!task)
699 return -ENOMEM;
700
701 task->dev = dev;
702 task->task_proto = dev->tproto;
703 memcpy(&task->ssp_task, parameter, para_len);
704 task->task_done = pm8001_task_done;
705 task->slow_task->timer.function = pm8001_tmf_timedout;
706 task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT*HZ;
707 add_timer(&task->slow_task->timer);
708
709 res = pm8001_task_exec(task, GFP_KERNEL, 1, tmf);
710
711 if (res) {
712 del_timer(&task->slow_task->timer);
713 PM8001_FAIL_DBG(pm8001_ha,
714 pm8001_printk("Executing internal task "
715 "failed\n"));
716 goto ex_err;
717 }
718 wait_for_completion(&task->slow_task->completion);
719 if (pm8001_ha->chip_id != chip_8001) {
720 pm8001_dev->setds_completion = &completion_setstate;
721 PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
722 pm8001_dev, 0x01);
723 wait_for_completion(&completion_setstate);
724 }
725 res = -TMF_RESP_FUNC_FAILED;
726 /* Even TMF timed out, return direct. */
727 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
728 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
729 PM8001_FAIL_DBG(pm8001_ha,
730 pm8001_printk("TMF task[%x]timeout.\n",
731 tmf->tmf));
732 goto ex_err;
733 }
734 }
735
736 if (task->task_status.resp == SAS_TASK_COMPLETE &&
737 task->task_status.stat == SAM_STAT_GOOD) {
738 res = TMF_RESP_FUNC_COMPLETE;
739 break;
740 }
741
742 if (task->task_status.resp == SAS_TASK_COMPLETE &&
743 task->task_status.stat == SAS_DATA_UNDERRUN) {
744 /* no error, but return the number of bytes of
745 * underrun */
746 res = task->task_status.residual;
747 break;
748 }
749
750 if (task->task_status.resp == SAS_TASK_COMPLETE &&
751 task->task_status.stat == SAS_DATA_OVERRUN) {
752 PM8001_FAIL_DBG(pm8001_ha,
753 pm8001_printk("Blocked task error.\n"));
754 res = -EMSGSIZE;
755 break;
756 } else {
757 PM8001_EH_DBG(pm8001_ha,
758 pm8001_printk(" Task to dev %016llx response:"
759 "0x%x status 0x%x\n",
760 SAS_ADDR(dev->sas_addr),
761 task->task_status.resp,
762 task->task_status.stat));
763 sas_free_task(task);
764 task = NULL;
765 }
766 }
767 ex_err:
768 BUG_ON(retry == 3 && task != NULL);
769 sas_free_task(task);
770 return res;
771 }
772
773 static int
774 pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha,
775 struct pm8001_device *pm8001_dev, struct domain_device *dev, u32 flag,
776 u32 task_tag)
777 {
778 int res, retry;
779 u32 ccb_tag;
780 struct pm8001_ccb_info *ccb;
781 struct sas_task *task = NULL;
782
783 for (retry = 0; retry < 3; retry++) {
784 task = sas_alloc_slow_task(GFP_KERNEL);
785 if (!task)
786 return -ENOMEM;
787
788 task->dev = dev;
789 task->task_proto = dev->tproto;
790 task->task_done = pm8001_task_done;
791 task->slow_task->timer.function = pm8001_tmf_timedout;
792 task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT * HZ;
793 add_timer(&task->slow_task->timer);
794
795 res = pm8001_tag_alloc(pm8001_ha, &ccb_tag);
796 if (res)
797 return res;
798 ccb = &pm8001_ha->ccb_info[ccb_tag];
799 ccb->device = pm8001_dev;
800 ccb->ccb_tag = ccb_tag;
801 ccb->task = task;
802 ccb->n_elem = 0;
803
804 res = PM8001_CHIP_DISP->task_abort(pm8001_ha,
805 pm8001_dev, flag, task_tag, ccb_tag);
806
807 if (res) {
808 del_timer(&task->slow_task->timer);
809 PM8001_FAIL_DBG(pm8001_ha,
810 pm8001_printk("Executing internal task "
811 "failed\n"));
812 goto ex_err;
813 }
814 wait_for_completion(&task->slow_task->completion);
815 res = TMF_RESP_FUNC_FAILED;
816 /* Even TMF timed out, return direct. */
817 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
818 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
819 PM8001_FAIL_DBG(pm8001_ha,
820 pm8001_printk("TMF task timeout.\n"));
821 goto ex_err;
822 }
823 }
824
825 if (task->task_status.resp == SAS_TASK_COMPLETE &&
826 task->task_status.stat == SAM_STAT_GOOD) {
827 res = TMF_RESP_FUNC_COMPLETE;
828 break;
829
830 } else {
831 PM8001_EH_DBG(pm8001_ha,
832 pm8001_printk(" Task to dev %016llx response: "
833 "0x%x status 0x%x\n",
834 SAS_ADDR(dev->sas_addr),
835 task->task_status.resp,
836 task->task_status.stat));
837 sas_free_task(task);
838 task = NULL;
839 }
840 }
841 ex_err:
842 BUG_ON(retry == 3 && task != NULL);
843 sas_free_task(task);
844 return res;
845 }
846
847 /**
848 * pm8001_dev_gone_notify - see the comments for "pm8001_dev_found_notify"
849 * @dev: the device structure which sas layer used.
850 */
851 static void pm8001_dev_gone_notify(struct domain_device *dev)
852 {
853 unsigned long flags = 0;
854 struct pm8001_hba_info *pm8001_ha;
855 struct pm8001_device *pm8001_dev = dev->lldd_dev;
856
857 pm8001_ha = pm8001_find_ha_by_dev(dev);
858 spin_lock_irqsave(&pm8001_ha->lock, flags);
859 if (pm8001_dev) {
860 u32 device_id = pm8001_dev->device_id;
861
862 PM8001_DISC_DBG(pm8001_ha,
863 pm8001_printk("found dev[%d:%x] is gone.\n",
864 pm8001_dev->device_id, pm8001_dev->dev_type));
865 if (pm8001_dev->running_req) {
866 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
867 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
868 dev, 1, 0);
869 while (pm8001_dev->running_req)
870 msleep(20);
871 spin_lock_irqsave(&pm8001_ha->lock, flags);
872 }
873 PM8001_CHIP_DISP->dereg_dev_req(pm8001_ha, device_id);
874 pm8001_free_dev(pm8001_dev);
875 } else {
876 PM8001_DISC_DBG(pm8001_ha,
877 pm8001_printk("Found dev has gone.\n"));
878 }
879 dev->lldd_dev = NULL;
880 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
881 }
882
883 void pm8001_dev_gone(struct domain_device *dev)
884 {
885 pm8001_dev_gone_notify(dev);
886 }
887
888 static int pm8001_issue_ssp_tmf(struct domain_device *dev,
889 u8 *lun, struct pm8001_tmf_task *tmf)
890 {
891 struct sas_ssp_task ssp_task;
892 if (!(dev->tproto & SAS_PROTOCOL_SSP))
893 return TMF_RESP_FUNC_ESUPP;
894
895 strncpy((u8 *)&ssp_task.LUN, lun, 8);
896 return pm8001_exec_internal_tmf_task(dev, &ssp_task, sizeof(ssp_task),
897 tmf);
898 }
899
900 /* retry commands by ha, by task and/or by device */
901 void pm8001_open_reject_retry(
902 struct pm8001_hba_info *pm8001_ha,
903 struct sas_task *task_to_close,
904 struct pm8001_device *device_to_close)
905 {
906 int i;
907 unsigned long flags;
908
909 if (pm8001_ha == NULL)
910 return;
911
912 spin_lock_irqsave(&pm8001_ha->lock, flags);
913
914 for (i = 0; i < PM8001_MAX_CCB; i++) {
915 struct sas_task *task;
916 struct task_status_struct *ts;
917 struct pm8001_device *pm8001_dev;
918 unsigned long flags1;
919 u32 tag;
920 struct pm8001_ccb_info *ccb = &pm8001_ha->ccb_info[i];
921
922 pm8001_dev = ccb->device;
923 if (!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED))
924 continue;
925 if (!device_to_close) {
926 uintptr_t d = (uintptr_t)pm8001_dev
927 - (uintptr_t)&pm8001_ha->devices;
928 if (((d % sizeof(*pm8001_dev)) != 0)
929 || ((d / sizeof(*pm8001_dev)) >= PM8001_MAX_DEVICES))
930 continue;
931 } else if (pm8001_dev != device_to_close)
932 continue;
933 tag = ccb->ccb_tag;
934 if (!tag || (tag == 0xFFFFFFFF))
935 continue;
936 task = ccb->task;
937 if (!task || !task->task_done)
938 continue;
939 if (task_to_close && (task != task_to_close))
940 continue;
941 ts = &task->task_status;
942 ts->resp = SAS_TASK_COMPLETE;
943 /* Force the midlayer to retry */
944 ts->stat = SAS_OPEN_REJECT;
945 ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
946 if (pm8001_dev)
947 pm8001_dev->running_req--;
948 spin_lock_irqsave(&task->task_state_lock, flags1);
949 task->task_state_flags &= ~SAS_TASK_STATE_PENDING;
950 task->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
951 task->task_state_flags |= SAS_TASK_STATE_DONE;
952 if (unlikely((task->task_state_flags
953 & SAS_TASK_STATE_ABORTED))) {
954 spin_unlock_irqrestore(&task->task_state_lock,
955 flags1);
956 pm8001_ccb_task_free(pm8001_ha, task, ccb, tag);
957 } else {
958 spin_unlock_irqrestore(&task->task_state_lock,
959 flags1);
960 pm8001_ccb_task_free(pm8001_ha, task, ccb, tag);
961 mb();/* in order to force CPU ordering */
962 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
963 task->task_done(task);
964 spin_lock_irqsave(&pm8001_ha->lock, flags);
965 }
966 }
967
968 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
969 }
970
971 /**
972 * Standard mandates link reset for ATA (type 0) and hard reset for
973 * SSP (type 1) , only for RECOVERY
974 */
975 int pm8001_I_T_nexus_reset(struct domain_device *dev)
976 {
977 int rc = TMF_RESP_FUNC_FAILED;
978 struct pm8001_device *pm8001_dev;
979 struct pm8001_hba_info *pm8001_ha;
980 struct sas_phy *phy;
981
982 if (!dev || !dev->lldd_dev)
983 return -ENODEV;
984
985 pm8001_dev = dev->lldd_dev;
986 pm8001_ha = pm8001_find_ha_by_dev(dev);
987 phy = sas_get_local_phy(dev);
988
989 if (dev_is_sata(dev)) {
990 if (scsi_is_sas_phy_local(phy)) {
991 rc = 0;
992 goto out;
993 }
994 rc = sas_phy_reset(phy, 1);
995 if (rc) {
996 PM8001_EH_DBG(pm8001_ha,
997 pm8001_printk("phy reset failed for device %x\n"
998 "with rc %d\n", pm8001_dev->device_id, rc));
999 rc = TMF_RESP_FUNC_FAILED;
1000 goto out;
1001 }
1002 msleep(2000);
1003 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
1004 dev, 1, 0);
1005 if (rc) {
1006 PM8001_EH_DBG(pm8001_ha,
1007 pm8001_printk("task abort failed %x\n"
1008 "with rc %d\n", pm8001_dev->device_id, rc));
1009 rc = TMF_RESP_FUNC_FAILED;
1010 }
1011 } else {
1012 rc = sas_phy_reset(phy, 1);
1013 msleep(2000);
1014 }
1015 PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n",
1016 pm8001_dev->device_id, rc));
1017 out:
1018 sas_put_local_phy(phy);
1019 return rc;
1020 }
1021
1022 /*
1023 * This function handle the IT_NEXUS_XXX event or completion
1024 * status code for SSP/SATA/SMP I/O request.
1025 */
1026 int pm8001_I_T_nexus_event_handler(struct domain_device *dev)
1027 {
1028 int rc = TMF_RESP_FUNC_FAILED;
1029 struct pm8001_device *pm8001_dev;
1030 struct pm8001_hba_info *pm8001_ha;
1031 struct sas_phy *phy;
1032 u32 device_id = 0;
1033
1034 if (!dev || !dev->lldd_dev)
1035 return -1;
1036
1037 pm8001_dev = dev->lldd_dev;
1038 device_id = pm8001_dev->device_id;
1039 pm8001_ha = pm8001_find_ha_by_dev(dev);
1040
1041 PM8001_EH_DBG(pm8001_ha,
1042 pm8001_printk("I_T_Nexus handler invoked !!"));
1043
1044 phy = sas_get_local_phy(dev);
1045
1046 if (dev_is_sata(dev)) {
1047 DECLARE_COMPLETION_ONSTACK(completion_setstate);
1048 if (scsi_is_sas_phy_local(phy)) {
1049 rc = 0;
1050 goto out;
1051 }
1052 /* send internal ssp/sata/smp abort command to FW */
1053 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
1054 dev, 1, 0);
1055 msleep(100);
1056
1057 /* deregister the target device */
1058 pm8001_dev_gone_notify(dev);
1059 msleep(200);
1060
1061 /*send phy reset to hard reset target */
1062 rc = sas_phy_reset(phy, 1);
1063 msleep(2000);
1064 pm8001_dev->setds_completion = &completion_setstate;
1065
1066 wait_for_completion(&completion_setstate);
1067 } else {
1068 /* send internal ssp/sata/smp abort command to FW */
1069 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
1070 dev, 1, 0);
1071 msleep(100);
1072
1073 /* deregister the target device */
1074 pm8001_dev_gone_notify(dev);
1075 msleep(200);
1076
1077 /*send phy reset to hard reset target */
1078 rc = sas_phy_reset(phy, 1);
1079 msleep(2000);
1080 }
1081 PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n",
1082 pm8001_dev->device_id, rc));
1083 out:
1084 sas_put_local_phy(phy);
1085
1086 return rc;
1087 }
1088 /* mandatory SAM-3, the task reset the specified LUN*/
1089 int pm8001_lu_reset(struct domain_device *dev, u8 *lun)
1090 {
1091 int rc = TMF_RESP_FUNC_FAILED;
1092 struct pm8001_tmf_task tmf_task;
1093 struct pm8001_device *pm8001_dev = dev->lldd_dev;
1094 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
1095 DECLARE_COMPLETION_ONSTACK(completion_setstate);
1096 if (dev_is_sata(dev)) {
1097 struct sas_phy *phy = sas_get_local_phy(dev);
1098 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
1099 dev, 1, 0);
1100 rc = sas_phy_reset(phy, 1);
1101 sas_put_local_phy(phy);
1102 pm8001_dev->setds_completion = &completion_setstate;
1103 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
1104 pm8001_dev, 0x01);
1105 wait_for_completion(&completion_setstate);
1106 } else {
1107 tmf_task.tmf = TMF_LU_RESET;
1108 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1109 }
1110 /* If failed, fall-through I_T_Nexus reset */
1111 PM8001_EH_DBG(pm8001_ha, pm8001_printk("for device[%x]:rc=%d\n",
1112 pm8001_dev->device_id, rc));
1113 return rc;
1114 }
1115
1116 /* optional SAM-3 */
1117 int pm8001_query_task(struct sas_task *task)
1118 {
1119 u32 tag = 0xdeadbeef;
1120 int i = 0;
1121 struct scsi_lun lun;
1122 struct pm8001_tmf_task tmf_task;
1123 int rc = TMF_RESP_FUNC_FAILED;
1124 if (unlikely(!task || !task->lldd_task || !task->dev))
1125 return rc;
1126
1127 if (task->task_proto & SAS_PROTOCOL_SSP) {
1128 struct scsi_cmnd *cmnd = task->uldd_task;
1129 struct domain_device *dev = task->dev;
1130 struct pm8001_hba_info *pm8001_ha =
1131 pm8001_find_ha_by_dev(dev);
1132
1133 int_to_scsilun(cmnd->device->lun, &lun);
1134 rc = pm8001_find_tag(task, &tag);
1135 if (rc == 0) {
1136 rc = TMF_RESP_FUNC_FAILED;
1137 return rc;
1138 }
1139 PM8001_EH_DBG(pm8001_ha, pm8001_printk("Query:["));
1140 for (i = 0; i < 16; i++)
1141 printk(KERN_INFO "%02x ", cmnd->cmnd[i]);
1142 printk(KERN_INFO "]\n");
1143 tmf_task.tmf = TMF_QUERY_TASK;
1144 tmf_task.tag_of_task_to_be_managed = tag;
1145
1146 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1147 switch (rc) {
1148 /* The task is still in Lun, release it then */
1149 case TMF_RESP_FUNC_SUCC:
1150 PM8001_EH_DBG(pm8001_ha,
1151 pm8001_printk("The task is still in Lun\n"));
1152 break;
1153 /* The task is not in Lun or failed, reset the phy */
1154 case TMF_RESP_FUNC_FAILED:
1155 case TMF_RESP_FUNC_COMPLETE:
1156 PM8001_EH_DBG(pm8001_ha,
1157 pm8001_printk("The task is not in Lun or failed,"
1158 " reset the phy\n"));
1159 break;
1160 }
1161 }
1162 pm8001_printk(":rc= %d\n", rc);
1163 return rc;
1164 }
1165
1166 /* mandatory SAM-3, still need free task/ccb info, abord the specified task */
1167 int pm8001_abort_task(struct sas_task *task)
1168 {
1169 unsigned long flags;
1170 u32 tag;
1171 u32 device_id;
1172 struct domain_device *dev ;
1173 struct pm8001_hba_info *pm8001_ha;
1174 struct scsi_lun lun;
1175 struct pm8001_device *pm8001_dev;
1176 struct pm8001_tmf_task tmf_task;
1177 int rc = TMF_RESP_FUNC_FAILED, ret;
1178 u32 phy_id;
1179 struct sas_task_slow slow_task;
1180 if (unlikely(!task || !task->lldd_task || !task->dev))
1181 return TMF_RESP_FUNC_FAILED;
1182 dev = task->dev;
1183 pm8001_dev = dev->lldd_dev;
1184 pm8001_ha = pm8001_find_ha_by_dev(dev);
1185 device_id = pm8001_dev->device_id;
1186 phy_id = pm8001_dev->attached_phy;
1187 rc = pm8001_find_tag(task, &tag);
1188 if (rc == 0) {
1189 pm8001_printk("no tag for task:%p\n", task);
1190 return TMF_RESP_FUNC_FAILED;
1191 }
1192 spin_lock_irqsave(&task->task_state_lock, flags);
1193 if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1194 spin_unlock_irqrestore(&task->task_state_lock, flags);
1195 return TMF_RESP_FUNC_COMPLETE;
1196 }
1197 task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1198 if (task->slow_task == NULL) {
1199 init_completion(&slow_task.completion);
1200 task->slow_task = &slow_task;
1201 }
1202 spin_unlock_irqrestore(&task->task_state_lock, flags);
1203 if (task->task_proto & SAS_PROTOCOL_SSP) {
1204 struct scsi_cmnd *cmnd = task->uldd_task;
1205 int_to_scsilun(cmnd->device->lun, &lun);
1206 tmf_task.tmf = TMF_ABORT_TASK;
1207 tmf_task.tag_of_task_to_be_managed = tag;
1208 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1209 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1210 pm8001_dev->sas_device, 0, tag);
1211 } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1212 task->task_proto & SAS_PROTOCOL_STP) {
1213 if (pm8001_ha->chip_id == chip_8006) {
1214 DECLARE_COMPLETION_ONSTACK(completion_reset);
1215 DECLARE_COMPLETION_ONSTACK(completion);
1216 struct pm8001_phy *phy = pm8001_ha->phy + phy_id;
1217
1218 /* 1. Set Device state as Recovery */
1219 pm8001_dev->setds_completion = &completion;
1220 PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
1221 pm8001_dev, 0x03);
1222 wait_for_completion(&completion);
1223
1224 /* 2. Send Phy Control Hard Reset */
1225 reinit_completion(&completion);
1226 phy->reset_success = false;
1227 phy->enable_completion = &completion;
1228 phy->reset_completion = &completion_reset;
1229 ret = PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
1230 PHY_HARD_RESET);
1231 if (ret)
1232 goto out;
1233 PM8001_MSG_DBG(pm8001_ha,
1234 pm8001_printk("Waiting for local phy ctl\n"));
1235 wait_for_completion(&completion);
1236 if (!phy->reset_success)
1237 goto out;
1238
1239 /* 3. Wait for Port Reset complete / Port reset TMO */
1240 PM8001_MSG_DBG(pm8001_ha,
1241 pm8001_printk("Waiting for Port reset\n"));
1242 wait_for_completion(&completion_reset);
1243 if (phy->port_reset_status) {
1244 pm8001_dev_gone_notify(dev);
1245 goto out;
1246 }
1247
1248 /*
1249 * 4. SATA Abort ALL
1250 * we wait for the task to be aborted so that the task
1251 * is removed from the ccb. on success the caller is
1252 * going to free the task.
1253 */
1254 ret = pm8001_exec_internal_task_abort(pm8001_ha,
1255 pm8001_dev, pm8001_dev->sas_device, 1, tag);
1256 if (ret)
1257 goto out;
1258 ret = wait_for_completion_timeout(
1259 &task->slow_task->completion,
1260 PM8001_TASK_TIMEOUT * HZ);
1261 if (!ret)
1262 goto out;
1263
1264 /* 5. Set Device State as Operational */
1265 reinit_completion(&completion);
1266 pm8001_dev->setds_completion = &completion;
1267 PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
1268 pm8001_dev, 0x01);
1269 wait_for_completion(&completion);
1270 } else {
1271 rc = pm8001_exec_internal_task_abort(pm8001_ha,
1272 pm8001_dev, pm8001_dev->sas_device, 0, tag);
1273 }
1274 rc = TMF_RESP_FUNC_COMPLETE;
1275 } else if (task->task_proto & SAS_PROTOCOL_SMP) {
1276 /* SMP */
1277 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1278 pm8001_dev->sas_device, 0, tag);
1279
1280 }
1281 out:
1282 spin_lock_irqsave(&task->task_state_lock, flags);
1283 if (task->slow_task == &slow_task)
1284 task->slow_task = NULL;
1285 spin_unlock_irqrestore(&task->task_state_lock, flags);
1286 if (rc != TMF_RESP_FUNC_COMPLETE)
1287 pm8001_printk("rc= %d\n", rc);
1288 return rc;
1289 }
1290
1291 int pm8001_abort_task_set(struct domain_device *dev, u8 *lun)
1292 {
1293 int rc = TMF_RESP_FUNC_FAILED;
1294 struct pm8001_tmf_task tmf_task;
1295
1296 tmf_task.tmf = TMF_ABORT_TASK_SET;
1297 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1298 return rc;
1299 }
1300
1301 int pm8001_clear_aca(struct domain_device *dev, u8 *lun)
1302 {
1303 int rc = TMF_RESP_FUNC_FAILED;
1304 struct pm8001_tmf_task tmf_task;
1305
1306 tmf_task.tmf = TMF_CLEAR_ACA;
1307 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1308
1309 return rc;
1310 }
1311
1312 int pm8001_clear_task_set(struct domain_device *dev, u8 *lun)
1313 {
1314 int rc = TMF_RESP_FUNC_FAILED;
1315 struct pm8001_tmf_task tmf_task;
1316 struct pm8001_device *pm8001_dev = dev->lldd_dev;
1317 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
1318
1319 PM8001_EH_DBG(pm8001_ha,
1320 pm8001_printk("I_T_L_Q clear task set[%x]\n",
1321 pm8001_dev->device_id));
1322 tmf_task.tmf = TMF_CLEAR_TASK_SET;
1323 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1324 return rc;
1325 }
1326
Linux with added FPC-III support