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dbf9bfe6 | 1 | /* |
2 | * PMC-Sierra SPC 8001 SAS/SATA based host adapters driver | |
3 | * | |
4 | * Copyright (c) 2008-2009 USI Co., Ltd. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * 1. Redistributions of source code must retain the above copyright | |
11 | * notice, this list of conditions, and the following disclaimer, | |
12 | * without modification. | |
13 | * 2. Redistributions in binary form must reproduce at minimum a disclaimer | |
14 | * substantially similar to the "NO WARRANTY" disclaimer below | |
15 | * ("Disclaimer") and any redistribution must be conditioned upon | |
16 | * including a substantially similar Disclaimer requirement for further | |
17 | * binary redistribution. | |
18 | * 3. Neither the names of the above-listed copyright holders nor the names | |
19 | * of any contributors may be used to endorse or promote products derived | |
20 | * from this software without specific prior written permission. | |
21 | * | |
22 | * Alternatively, this software may be distributed under the terms of the | |
23 | * GNU General Public License ("GPL") version 2 as published by the Free | |
24 | * Software Foundation. | |
25 | * | |
26 | * NO WARRANTY | |
27 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
28 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
29 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR | |
30 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
31 | * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
32 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
33 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
34 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
35 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING | |
36 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
37 | * POSSIBILITY OF SUCH DAMAGES. | |
38 | * | |
39 | */ | |
40 | ||
5a0e3ad6 | 41 | #include <linux/slab.h> |
dbf9bfe6 | 42 | #include "pm8001_sas.h" |
43 | ||
44 | /** | |
45 | * pm8001_find_tag - from sas task to find out tag that belongs to this task | |
46 | * @task: the task sent to the LLDD | |
47 | * @tag: the found tag associated with the task | |
48 | */ | |
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_clear - clear the tags bitmap | |
62 | * @pm8001_ha: our hba struct | |
63 | * @tag: the found tag associated with the task | |
64 | */ | |
65 | static void pm8001_tag_clear(struct pm8001_hba_info *pm8001_ha, u32 tag) | |
66 | { | |
67 | void *bitmap = pm8001_ha->tags; | |
68 | clear_bit(tag, bitmap); | |
69 | } | |
70 | ||
71 | static void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag) | |
72 | { | |
73 | pm8001_tag_clear(pm8001_ha, tag); | |
74 | } | |
75 | ||
76 | static void pm8001_tag_set(struct pm8001_hba_info *pm8001_ha, u32 tag) | |
77 | { | |
78 | void *bitmap = pm8001_ha->tags; | |
79 | set_bit(tag, bitmap); | |
80 | } | |
81 | ||
82 | /** | |
83 | * pm8001_tag_alloc - allocate a empty tag for task used. | |
84 | * @pm8001_ha: our hba struct | |
85 | * @tag_out: the found empty tag . | |
86 | */ | |
87 | inline int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out) | |
88 | { | |
89 | unsigned int index, tag; | |
90 | void *bitmap = pm8001_ha->tags; | |
91 | ||
92 | index = find_first_zero_bit(bitmap, pm8001_ha->tags_num); | |
93 | tag = index; | |
94 | if (tag >= pm8001_ha->tags_num) | |
95 | return -SAS_QUEUE_FULL; | |
96 | pm8001_tag_set(pm8001_ha, tag); | |
97 | *tag_out = tag; | |
98 | return 0; | |
99 | } | |
100 | ||
101 | void pm8001_tag_init(struct pm8001_hba_info *pm8001_ha) | |
102 | { | |
103 | int i; | |
104 | for (i = 0; i < pm8001_ha->tags_num; ++i) | |
105 | pm8001_tag_clear(pm8001_ha, i); | |
106 | } | |
107 | ||
108 | /** | |
109 | * pm8001_mem_alloc - allocate memory for pm8001. | |
110 | * @pdev: pci device. | |
111 | * @virt_addr: the allocated virtual address | |
112 | * @pphys_addr_hi: the physical address high byte address. | |
113 | * @pphys_addr_lo: the physical address low byte address. | |
114 | * @mem_size: memory size. | |
115 | */ | |
116 | int pm8001_mem_alloc(struct pci_dev *pdev, void **virt_addr, | |
117 | dma_addr_t *pphys_addr, u32 *pphys_addr_hi, | |
118 | u32 *pphys_addr_lo, u32 mem_size, u32 align) | |
119 | { | |
120 | caddr_t mem_virt_alloc; | |
121 | dma_addr_t mem_dma_handle; | |
122 | u64 phys_align; | |
123 | u64 align_offset = 0; | |
124 | if (align) | |
125 | align_offset = (dma_addr_t)align - 1; | |
126 | mem_virt_alloc = | |
127 | pci_alloc_consistent(pdev, mem_size + align, &mem_dma_handle); | |
128 | if (!mem_virt_alloc) { | |
129 | pm8001_printk("memory allocation error\n"); | |
130 | return -1; | |
131 | } | |
132 | memset((void *)mem_virt_alloc, 0, mem_size+align); | |
133 | *pphys_addr = mem_dma_handle; | |
134 | phys_align = (*pphys_addr + align_offset) & ~align_offset; | |
135 | *virt_addr = (void *)mem_virt_alloc + phys_align - *pphys_addr; | |
136 | *pphys_addr_hi = upper_32_bits(phys_align); | |
137 | *pphys_addr_lo = lower_32_bits(phys_align); | |
138 | return 0; | |
139 | } | |
140 | /** | |
141 | * pm8001_find_ha_by_dev - from domain device which come from sas layer to | |
142 | * find out our hba struct. | |
143 | * @dev: the domain device which from sas layer. | |
144 | */ | |
145 | static | |
146 | struct pm8001_hba_info *pm8001_find_ha_by_dev(struct domain_device *dev) | |
147 | { | |
148 | struct sas_ha_struct *sha = dev->port->ha; | |
149 | struct pm8001_hba_info *pm8001_ha = sha->lldd_ha; | |
150 | return pm8001_ha; | |
151 | } | |
152 | ||
153 | /** | |
154 | * pm8001_phy_control - this function should be registered to | |
155 | * sas_domain_function_template to provide libsas used, note: this is just | |
156 | * control the HBA phy rather than other expander phy if you want control | |
157 | * other phy, you should use SMP command. | |
158 | * @sas_phy: which phy in HBA phys. | |
159 | * @func: the operation. | |
160 | * @funcdata: always NULL. | |
161 | */ | |
162 | int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func, | |
163 | void *funcdata) | |
164 | { | |
165 | int rc = 0, phy_id = sas_phy->id; | |
166 | struct pm8001_hba_info *pm8001_ha = NULL; | |
167 | struct sas_phy_linkrates *rates; | |
168 | DECLARE_COMPLETION_ONSTACK(completion); | |
169 | pm8001_ha = sas_phy->ha->lldd_ha; | |
170 | pm8001_ha->phy[phy_id].enable_completion = &completion; | |
171 | switch (func) { | |
172 | case PHY_FUNC_SET_LINK_RATE: | |
173 | rates = funcdata; | |
174 | if (rates->minimum_linkrate) { | |
175 | pm8001_ha->phy[phy_id].minimum_linkrate = | |
176 | rates->minimum_linkrate; | |
177 | } | |
178 | if (rates->maximum_linkrate) { | |
179 | pm8001_ha->phy[phy_id].maximum_linkrate = | |
180 | rates->maximum_linkrate; | |
181 | } | |
182 | if (pm8001_ha->phy[phy_id].phy_state == 0) { | |
183 | PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id); | |
184 | wait_for_completion(&completion); | |
185 | } | |
186 | PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id, | |
187 | PHY_LINK_RESET); | |
188 | break; | |
189 | case PHY_FUNC_HARD_RESET: | |
190 | if (pm8001_ha->phy[phy_id].phy_state == 0) { | |
191 | PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id); | |
192 | wait_for_completion(&completion); | |
193 | } | |
194 | PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id, | |
195 | PHY_HARD_RESET); | |
196 | break; | |
197 | case PHY_FUNC_LINK_RESET: | |
198 | if (pm8001_ha->phy[phy_id].phy_state == 0) { | |
199 | PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id); | |
200 | wait_for_completion(&completion); | |
201 | } | |
202 | PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id, | |
203 | PHY_LINK_RESET); | |
204 | break; | |
205 | case PHY_FUNC_RELEASE_SPINUP_HOLD: | |
206 | PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id, | |
207 | PHY_LINK_RESET); | |
208 | break; | |
209 | case PHY_FUNC_DISABLE: | |
210 | PM8001_CHIP_DISP->phy_stop_req(pm8001_ha, phy_id); | |
211 | break; | |
212 | default: | |
213 | rc = -EOPNOTSUPP; | |
214 | } | |
215 | msleep(300); | |
216 | return rc; | |
217 | } | |
218 | ||
219 | int pm8001_slave_alloc(struct scsi_device *scsi_dev) | |
220 | { | |
221 | struct domain_device *dev = sdev_to_domain_dev(scsi_dev); | |
222 | if (dev_is_sata(dev)) { | |
223 | /* We don't need to rescan targets | |
224 | * if REPORT_LUNS request is failed | |
225 | */ | |
226 | if (scsi_dev->lun > 0) | |
227 | return -ENXIO; | |
228 | scsi_dev->tagged_supported = 1; | |
229 | } | |
230 | return sas_slave_alloc(scsi_dev); | |
231 | } | |
232 | ||
233 | /** | |
234 | * pm8001_scan_start - we should enable all HBA phys by sending the phy_start | |
235 | * command to HBA. | |
236 | * @shost: the scsi host data. | |
237 | */ | |
238 | void pm8001_scan_start(struct Scsi_Host *shost) | |
239 | { | |
240 | int i; | |
241 | struct pm8001_hba_info *pm8001_ha; | |
242 | struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost); | |
243 | pm8001_ha = sha->lldd_ha; | |
d0b68041 | 244 | PM8001_CHIP_DISP->sas_re_init_req(pm8001_ha); |
dbf9bfe6 | 245 | for (i = 0; i < pm8001_ha->chip->n_phy; ++i) |
246 | PM8001_CHIP_DISP->phy_start_req(pm8001_ha, i); | |
247 | } | |
248 | ||
249 | int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time) | |
250 | { | |
251 | /* give the phy enabling interrupt event time to come in (1s | |
252 | * is empirically about all it takes) */ | |
253 | if (time < HZ) | |
254 | return 0; | |
255 | /* Wait for discovery to finish */ | |
256 | scsi_flush_work(shost); | |
257 | return 1; | |
258 | } | |
259 | ||
260 | /** | |
261 | * pm8001_task_prep_smp - the dispatcher function, prepare data for smp task | |
262 | * @pm8001_ha: our hba card information | |
263 | * @ccb: the ccb which attached to smp task | |
264 | */ | |
265 | static int pm8001_task_prep_smp(struct pm8001_hba_info *pm8001_ha, | |
266 | struct pm8001_ccb_info *ccb) | |
267 | { | |
268 | return PM8001_CHIP_DISP->smp_req(pm8001_ha, ccb); | |
269 | } | |
270 | ||
271 | u32 pm8001_get_ncq_tag(struct sas_task *task, u32 *tag) | |
272 | { | |
273 | struct ata_queued_cmd *qc = task->uldd_task; | |
274 | if (qc) { | |
275 | if (qc->tf.command == ATA_CMD_FPDMA_WRITE || | |
276 | qc->tf.command == ATA_CMD_FPDMA_READ) { | |
277 | *tag = qc->tag; | |
278 | return 1; | |
279 | } | |
280 | } | |
281 | return 0; | |
282 | } | |
283 | ||
284 | /** | |
285 | * pm8001_task_prep_ata - the dispatcher function, prepare data for sata task | |
286 | * @pm8001_ha: our hba card information | |
287 | * @ccb: the ccb which attached to sata task | |
288 | */ | |
289 | static int pm8001_task_prep_ata(struct pm8001_hba_info *pm8001_ha, | |
290 | struct pm8001_ccb_info *ccb) | |
291 | { | |
292 | return PM8001_CHIP_DISP->sata_req(pm8001_ha, ccb); | |
293 | } | |
294 | ||
295 | /** | |
296 | * pm8001_task_prep_ssp_tm - the dispatcher function, prepare task management data | |
297 | * @pm8001_ha: our hba card information | |
298 | * @ccb: the ccb which attached to TM | |
299 | * @tmf: the task management IU | |
300 | */ | |
301 | static int pm8001_task_prep_ssp_tm(struct pm8001_hba_info *pm8001_ha, | |
302 | struct pm8001_ccb_info *ccb, struct pm8001_tmf_task *tmf) | |
303 | { | |
304 | return PM8001_CHIP_DISP->ssp_tm_req(pm8001_ha, ccb, tmf); | |
305 | } | |
306 | ||
307 | /** | |
308 | * pm8001_task_prep_ssp - the dispatcher function,prepare ssp data for ssp task | |
309 | * @pm8001_ha: our hba card information | |
310 | * @ccb: the ccb which attached to ssp task | |
311 | */ | |
312 | static int pm8001_task_prep_ssp(struct pm8001_hba_info *pm8001_ha, | |
313 | struct pm8001_ccb_info *ccb) | |
314 | { | |
315 | return PM8001_CHIP_DISP->ssp_io_req(pm8001_ha, ccb); | |
316 | } | |
317 | int pm8001_slave_configure(struct scsi_device *sdev) | |
318 | { | |
319 | struct domain_device *dev = sdev_to_domain_dev(sdev); | |
320 | int ret = sas_slave_configure(sdev); | |
321 | if (ret) | |
322 | return ret; | |
323 | if (dev_is_sata(dev)) { | |
324 | #ifdef PM8001_DISABLE_NCQ | |
325 | struct ata_port *ap = dev->sata_dev.ap; | |
326 | struct ata_device *adev = ap->link.device; | |
327 | adev->flags |= ATA_DFLAG_NCQ_OFF; | |
328 | scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, 1); | |
329 | #endif | |
330 | } | |
331 | return 0; | |
332 | } | |
1cc943ae | 333 | /* Find the local port id that's attached to this device */ |
334 | static int sas_find_local_port_id(struct domain_device *dev) | |
335 | { | |
336 | struct domain_device *pdev = dev->parent; | |
337 | ||
338 | /* Directly attached device */ | |
339 | if (!pdev) | |
340 | return dev->port->id; | |
341 | while (pdev) { | |
342 | struct domain_device *pdev_p = pdev->parent; | |
343 | if (!pdev_p) | |
344 | return pdev->port->id; | |
345 | pdev = pdev->parent; | |
346 | } | |
347 | return 0; | |
348 | } | |
349 | ||
dbf9bfe6 | 350 | /** |
97ee2088 | 351 | * pm8001_task_exec - queue the task(ssp, smp && ata) to the hardware. |
dbf9bfe6 | 352 | * @task: the task to be execute. |
353 | * @num: if can_queue great than 1, the task can be queued up. for SMP task, | |
354 | * we always execute one one time. | |
355 | * @gfp_flags: gfp_flags. | |
97ee2088 | 356 | * @is_tmf: if it is task management task. |
dbf9bfe6 | 357 | * @tmf: the task management IU |
358 | */ | |
359 | #define DEV_IS_GONE(pm8001_dev) \ | |
360 | ((!pm8001_dev || (pm8001_dev->dev_type == NO_DEVICE))) | |
361 | static int pm8001_task_exec(struct sas_task *task, const int num, | |
362 | gfp_t gfp_flags, int is_tmf, struct pm8001_tmf_task *tmf) | |
363 | { | |
364 | struct domain_device *dev = task->dev; | |
365 | struct pm8001_hba_info *pm8001_ha; | |
366 | struct pm8001_device *pm8001_dev; | |
1cc943ae | 367 | struct pm8001_port *port = NULL; |
dbf9bfe6 | 368 | struct sas_task *t = task; |
369 | struct pm8001_ccb_info *ccb; | |
370 | u32 tag = 0xdeadbeef, rc, n_elem = 0; | |
371 | u32 n = num; | |
1cc943ae | 372 | unsigned long flags = 0, flags_libsas = 0; |
dbf9bfe6 | 373 | |
374 | if (!dev->port) { | |
375 | struct task_status_struct *tsm = &t->task_status; | |
376 | tsm->resp = SAS_TASK_UNDELIVERED; | |
377 | tsm->stat = SAS_PHY_DOWN; | |
378 | if (dev->dev_type != SATA_DEV) | |
379 | t->task_done(t); | |
380 | return 0; | |
381 | } | |
382 | pm8001_ha = pm8001_find_ha_by_dev(task->dev); | |
383 | PM8001_IO_DBG(pm8001_ha, pm8001_printk("pm8001_task_exec device \n ")); | |
384 | spin_lock_irqsave(&pm8001_ha->lock, flags); | |
385 | do { | |
386 | dev = t->dev; | |
387 | pm8001_dev = dev->lldd_dev; | |
388 | if (DEV_IS_GONE(pm8001_dev)) { | |
389 | if (pm8001_dev) { | |
390 | PM8001_IO_DBG(pm8001_ha, | |
391 | pm8001_printk("device %d not ready.\n", | |
392 | pm8001_dev->device_id)); | |
393 | } else { | |
394 | PM8001_IO_DBG(pm8001_ha, | |
395 | pm8001_printk("device %016llx not " | |
396 | "ready.\n", SAS_ADDR(dev->sas_addr))); | |
397 | } | |
97ee2088 | 398 | rc = SAS_PHY_DOWN; |
dbf9bfe6 | 399 | goto out_done; |
400 | } | |
1cc943ae | 401 | port = &pm8001_ha->port[sas_find_local_port_id(dev)]; |
402 | if (!port->port_attached) { | |
403 | if (sas_protocol_ata(t->task_proto)) { | |
404 | struct task_status_struct *ts = &t->task_status; | |
405 | ts->resp = SAS_TASK_UNDELIVERED; | |
406 | ts->stat = SAS_PHY_DOWN; | |
407 | ||
408 | spin_unlock_irqrestore(&pm8001_ha->lock, flags); | |
409 | spin_unlock_irqrestore(dev->sata_dev.ap->lock, | |
410 | flags_libsas); | |
411 | t->task_done(t); | |
412 | spin_lock_irqsave(dev->sata_dev.ap->lock, | |
413 | flags_libsas); | |
414 | spin_lock_irqsave(&pm8001_ha->lock, flags); | |
415 | if (n > 1) | |
416 | t = list_entry(t->list.next, | |
417 | struct sas_task, list); | |
418 | continue; | |
419 | } else { | |
420 | struct task_status_struct *ts = &t->task_status; | |
421 | ts->resp = SAS_TASK_UNDELIVERED; | |
422 | ts->stat = SAS_PHY_DOWN; | |
423 | t->task_done(t); | |
424 | if (n > 1) | |
425 | t = list_entry(t->list.next, | |
426 | struct sas_task, list); | |
427 | continue; | |
428 | } | |
429 | } | |
dbf9bfe6 | 430 | rc = pm8001_tag_alloc(pm8001_ha, &tag); |
431 | if (rc) | |
432 | goto err_out; | |
433 | ccb = &pm8001_ha->ccb_info[tag]; | |
434 | ||
435 | if (!sas_protocol_ata(t->task_proto)) { | |
436 | if (t->num_scatter) { | |
437 | n_elem = dma_map_sg(pm8001_ha->dev, | |
438 | t->scatter, | |
439 | t->num_scatter, | |
440 | t->data_dir); | |
441 | if (!n_elem) { | |
442 | rc = -ENOMEM; | |
97ee2088 | 443 | goto err_out_tag; |
dbf9bfe6 | 444 | } |
445 | } | |
446 | } else { | |
447 | n_elem = t->num_scatter; | |
448 | } | |
449 | ||
97ee2088 | 450 | t->lldd_task = ccb; |
dbf9bfe6 | 451 | ccb->n_elem = n_elem; |
452 | ccb->ccb_tag = tag; | |
453 | ccb->task = t; | |
454 | switch (t->task_proto) { | |
455 | case SAS_PROTOCOL_SMP: | |
456 | rc = pm8001_task_prep_smp(pm8001_ha, ccb); | |
457 | break; | |
458 | case SAS_PROTOCOL_SSP: | |
459 | if (is_tmf) | |
460 | rc = pm8001_task_prep_ssp_tm(pm8001_ha, | |
461 | ccb, tmf); | |
462 | else | |
463 | rc = pm8001_task_prep_ssp(pm8001_ha, ccb); | |
464 | break; | |
465 | case SAS_PROTOCOL_SATA: | |
466 | case SAS_PROTOCOL_STP: | |
467 | case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: | |
468 | rc = pm8001_task_prep_ata(pm8001_ha, ccb); | |
469 | break; | |
470 | default: | |
471 | dev_printk(KERN_ERR, pm8001_ha->dev, | |
472 | "unknown sas_task proto: 0x%x\n", | |
473 | t->task_proto); | |
474 | rc = -EINVAL; | |
475 | break; | |
476 | } | |
477 | ||
478 | if (rc) { | |
479 | PM8001_IO_DBG(pm8001_ha, | |
480 | pm8001_printk("rc is %x\n", rc)); | |
481 | goto err_out_tag; | |
482 | } | |
dbf9bfe6 | 483 | /* TODO: select normal or high priority */ |
484 | spin_lock(&t->task_state_lock); | |
485 | t->task_state_flags |= SAS_TASK_AT_INITIATOR; | |
486 | spin_unlock(&t->task_state_lock); | |
487 | pm8001_dev->running_req++; | |
488 | if (n > 1) | |
489 | t = list_entry(t->list.next, struct sas_task, list); | |
490 | } while (--n); | |
491 | rc = 0; | |
492 | goto out_done; | |
493 | ||
494 | err_out_tag: | |
495 | pm8001_tag_free(pm8001_ha, tag); | |
496 | err_out: | |
497 | dev_printk(KERN_ERR, pm8001_ha->dev, "pm8001 exec failed[%d]!\n", rc); | |
498 | if (!sas_protocol_ata(t->task_proto)) | |
499 | if (n_elem) | |
500 | dma_unmap_sg(pm8001_ha->dev, t->scatter, n_elem, | |
501 | t->data_dir); | |
502 | out_done: | |
503 | spin_unlock_irqrestore(&pm8001_ha->lock, flags); | |
504 | return rc; | |
505 | } | |
506 | ||
507 | /** | |
508 | * pm8001_queue_command - register for upper layer used, all IO commands sent | |
509 | * to HBA are from this interface. | |
510 | * @task: the task to be execute. | |
511 | * @num: if can_queue great than 1, the task can be queued up. for SMP task, | |
512 | * we always execute one one time | |
513 | * @gfp_flags: gfp_flags | |
514 | */ | |
515 | int pm8001_queue_command(struct sas_task *task, const int num, | |
516 | gfp_t gfp_flags) | |
517 | { | |
518 | return pm8001_task_exec(task, num, gfp_flags, 0, NULL); | |
519 | } | |
520 | ||
521 | void pm8001_ccb_free(struct pm8001_hba_info *pm8001_ha, u32 ccb_idx) | |
522 | { | |
523 | pm8001_tag_clear(pm8001_ha, ccb_idx); | |
524 | } | |
525 | ||
526 | /** | |
527 | * pm8001_ccb_task_free - free the sg for ssp and smp command, free the ccb. | |
528 | * @pm8001_ha: our hba card information | |
529 | * @ccb: the ccb which attached to ssp task | |
530 | * @task: the task to be free. | |
531 | * @ccb_idx: ccb index. | |
532 | */ | |
533 | void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha, | |
534 | struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx) | |
535 | { | |
536 | if (!ccb->task) | |
537 | return; | |
538 | if (!sas_protocol_ata(task->task_proto)) | |
539 | if (ccb->n_elem) | |
540 | dma_unmap_sg(pm8001_ha->dev, task->scatter, | |
541 | task->num_scatter, task->data_dir); | |
542 | ||
543 | switch (task->task_proto) { | |
544 | case SAS_PROTOCOL_SMP: | |
545 | dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_resp, 1, | |
546 | PCI_DMA_FROMDEVICE); | |
547 | dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_req, 1, | |
548 | PCI_DMA_TODEVICE); | |
549 | break; | |
550 | ||
551 | case SAS_PROTOCOL_SATA: | |
552 | case SAS_PROTOCOL_STP: | |
553 | case SAS_PROTOCOL_SSP: | |
554 | default: | |
555 | /* do nothing */ | |
556 | break; | |
557 | } | |
558 | task->lldd_task = NULL; | |
559 | ccb->task = NULL; | |
560 | ccb->ccb_tag = 0xFFFFFFFF; | |
561 | pm8001_ccb_free(pm8001_ha, ccb_idx); | |
562 | } | |
563 | ||
564 | /** | |
97ee2088 | 565 | * pm8001_alloc_dev - find a empty pm8001_device |
dbf9bfe6 | 566 | * @pm8001_ha: our hba card information |
567 | */ | |
568 | struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha) | |
569 | { | |
570 | u32 dev; | |
571 | for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) { | |
572 | if (pm8001_ha->devices[dev].dev_type == NO_DEVICE) { | |
573 | pm8001_ha->devices[dev].id = dev; | |
574 | return &pm8001_ha->devices[dev]; | |
575 | } | |
576 | } | |
577 | if (dev == PM8001_MAX_DEVICES) { | |
578 | PM8001_FAIL_DBG(pm8001_ha, | |
579 | pm8001_printk("max support %d devices, ignore ..\n", | |
580 | PM8001_MAX_DEVICES)); | |
581 | } | |
582 | return NULL; | |
583 | } | |
584 | ||
585 | static void pm8001_free_dev(struct pm8001_device *pm8001_dev) | |
586 | { | |
587 | u32 id = pm8001_dev->id; | |
588 | memset(pm8001_dev, 0, sizeof(*pm8001_dev)); | |
589 | pm8001_dev->id = id; | |
590 | pm8001_dev->dev_type = NO_DEVICE; | |
591 | pm8001_dev->device_id = PM8001_MAX_DEVICES; | |
592 | pm8001_dev->sas_device = NULL; | |
593 | } | |
594 | ||
595 | /** | |
97ee2088 | 596 | * pm8001_dev_found_notify - libsas notify a device is found. |
597 | * @dev: the device structure which sas layer used. | |
598 | * | |
599 | * when libsas find a sas domain device, it should tell the LLDD that | |
600 | * device is found, and then LLDD register this device to HBA firmware | |
601 | * by the command "OPC_INB_REG_DEV", after that the HBA will assign a | |
602 | * device ID(according to device's sas address) and returned it to LLDD. From | |
dbf9bfe6 | 603 | * now on, we communicate with HBA FW with the device ID which HBA assigned |
3ad2f3fb | 604 | * rather than sas address. it is the necessary step for our HBA but it is |
dbf9bfe6 | 605 | * the optional for other HBA driver. |
dbf9bfe6 | 606 | */ |
607 | static int pm8001_dev_found_notify(struct domain_device *dev) | |
608 | { | |
609 | unsigned long flags = 0; | |
610 | int res = 0; | |
611 | struct pm8001_hba_info *pm8001_ha = NULL; | |
612 | struct domain_device *parent_dev = dev->parent; | |
613 | struct pm8001_device *pm8001_device; | |
614 | DECLARE_COMPLETION_ONSTACK(completion); | |
615 | u32 flag = 0; | |
616 | pm8001_ha = pm8001_find_ha_by_dev(dev); | |
617 | spin_lock_irqsave(&pm8001_ha->lock, flags); | |
618 | ||
619 | pm8001_device = pm8001_alloc_dev(pm8001_ha); | |
dbf9bfe6 | 620 | if (!pm8001_device) { |
621 | res = -1; | |
622 | goto found_out; | |
623 | } | |
f01f4e6a | 624 | pm8001_device->sas_device = dev; |
dbf9bfe6 | 625 | dev->lldd_dev = pm8001_device; |
626 | pm8001_device->dev_type = dev->dev_type; | |
627 | pm8001_device->dcompletion = &completion; | |
628 | if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) { | |
629 | int phy_id; | |
630 | struct ex_phy *phy; | |
631 | for (phy_id = 0; phy_id < parent_dev->ex_dev.num_phys; | |
632 | phy_id++) { | |
633 | phy = &parent_dev->ex_dev.ex_phy[phy_id]; | |
634 | if (SAS_ADDR(phy->attached_sas_addr) | |
635 | == SAS_ADDR(dev->sas_addr)) { | |
636 | pm8001_device->attached_phy = phy_id; | |
637 | break; | |
638 | } | |
639 | } | |
640 | if (phy_id == parent_dev->ex_dev.num_phys) { | |
641 | PM8001_FAIL_DBG(pm8001_ha, | |
642 | pm8001_printk("Error: no attached dev:%016llx" | |
643 | " at ex:%016llx.\n", SAS_ADDR(dev->sas_addr), | |
644 | SAS_ADDR(parent_dev->sas_addr))); | |
645 | res = -1; | |
646 | } | |
647 | } else { | |
648 | if (dev->dev_type == SATA_DEV) { | |
649 | pm8001_device->attached_phy = | |
650 | dev->rphy->identify.phy_identifier; | |
651 | flag = 1; /* directly sata*/ | |
652 | } | |
653 | } /*register this device to HBA*/ | |
654 | PM8001_DISC_DBG(pm8001_ha, pm8001_printk("Found device \n")); | |
655 | PM8001_CHIP_DISP->reg_dev_req(pm8001_ha, pm8001_device, flag); | |
656 | spin_unlock_irqrestore(&pm8001_ha->lock, flags); | |
657 | wait_for_completion(&completion); | |
658 | if (dev->dev_type == SAS_END_DEV) | |
659 | msleep(50); | |
a61b8699 | 660 | pm8001_ha->flags |= PM8001F_RUN_TIME ; |
dbf9bfe6 | 661 | return 0; |
662 | found_out: | |
663 | spin_unlock_irqrestore(&pm8001_ha->lock, flags); | |
664 | return res; | |
665 | } | |
666 | ||
667 | int pm8001_dev_found(struct domain_device *dev) | |
668 | { | |
669 | return pm8001_dev_found_notify(dev); | |
670 | } | |
671 | ||
672 | /** | |
673 | * pm8001_alloc_task - allocate a task structure for TMF | |
674 | */ | |
675 | static struct sas_task *pm8001_alloc_task(void) | |
676 | { | |
677 | struct sas_task *task = kzalloc(sizeof(*task), GFP_KERNEL); | |
678 | if (task) { | |
679 | INIT_LIST_HEAD(&task->list); | |
680 | spin_lock_init(&task->task_state_lock); | |
681 | task->task_state_flags = SAS_TASK_STATE_PENDING; | |
682 | init_timer(&task->timer); | |
683 | init_completion(&task->completion); | |
684 | } | |
685 | return task; | |
686 | } | |
687 | ||
688 | static void pm8001_free_task(struct sas_task *task) | |
689 | { | |
690 | if (task) { | |
691 | BUG_ON(!list_empty(&task->list)); | |
692 | kfree(task); | |
693 | } | |
694 | } | |
695 | ||
696 | static void pm8001_task_done(struct sas_task *task) | |
697 | { | |
698 | if (!del_timer(&task->timer)) | |
699 | return; | |
700 | complete(&task->completion); | |
701 | } | |
702 | ||
703 | static void pm8001_tmf_timedout(unsigned long data) | |
704 | { | |
705 | struct sas_task *task = (struct sas_task *)data; | |
706 | ||
707 | task->task_state_flags |= SAS_TASK_STATE_ABORTED; | |
708 | complete(&task->completion); | |
709 | } | |
710 | ||
711 | #define PM8001_TASK_TIMEOUT 20 | |
712 | /** | |
97ee2088 | 713 | * pm8001_exec_internal_tmf_task - execute some task management commands. |
dbf9bfe6 | 714 | * @dev: the wanted device. |
715 | * @tmf: which task management wanted to be take. | |
716 | * @para_len: para_len. | |
717 | * @parameter: ssp task parameter. | |
97ee2088 | 718 | * |
719 | * when errors or exception happened, we may want to do something, for example | |
720 | * abort the issued task which result in this execption, it is done by calling | |
721 | * this function, note it is also with the task execute interface. | |
dbf9bfe6 | 722 | */ |
723 | static int pm8001_exec_internal_tmf_task(struct domain_device *dev, | |
724 | void *parameter, u32 para_len, struct pm8001_tmf_task *tmf) | |
725 | { | |
726 | int res, retry; | |
727 | struct sas_task *task = NULL; | |
728 | struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev); | |
729 | ||
730 | for (retry = 0; retry < 3; retry++) { | |
731 | task = pm8001_alloc_task(); | |
732 | if (!task) | |
733 | return -ENOMEM; | |
734 | ||
735 | task->dev = dev; | |
736 | task->task_proto = dev->tproto; | |
737 | memcpy(&task->ssp_task, parameter, para_len); | |
738 | task->task_done = pm8001_task_done; | |
739 | task->timer.data = (unsigned long)task; | |
740 | task->timer.function = pm8001_tmf_timedout; | |
741 | task->timer.expires = jiffies + PM8001_TASK_TIMEOUT*HZ; | |
742 | add_timer(&task->timer); | |
743 | ||
744 | res = pm8001_task_exec(task, 1, GFP_KERNEL, 1, tmf); | |
745 | ||
746 | if (res) { | |
747 | del_timer(&task->timer); | |
748 | PM8001_FAIL_DBG(pm8001_ha, | |
749 | pm8001_printk("Executing internal task " | |
750 | "failed\n")); | |
751 | goto ex_err; | |
752 | } | |
753 | wait_for_completion(&task->completion); | |
754 | res = -TMF_RESP_FUNC_FAILED; | |
755 | /* Even TMF timed out, return direct. */ | |
756 | if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { | |
757 | if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { | |
758 | PM8001_FAIL_DBG(pm8001_ha, | |
759 | pm8001_printk("TMF task[%x]timeout.\n", | |
760 | tmf->tmf)); | |
761 | goto ex_err; | |
762 | } | |
763 | } | |
764 | ||
765 | if (task->task_status.resp == SAS_TASK_COMPLETE && | |
df64d3ca | 766 | task->task_status.stat == SAM_STAT_GOOD) { |
dbf9bfe6 | 767 | res = TMF_RESP_FUNC_COMPLETE; |
768 | break; | |
769 | } | |
770 | ||
771 | if (task->task_status.resp == SAS_TASK_COMPLETE && | |
772 | task->task_status.stat == SAS_DATA_UNDERRUN) { | |
773 | /* no error, but return the number of bytes of | |
774 | * underrun */ | |
775 | res = task->task_status.residual; | |
776 | break; | |
777 | } | |
778 | ||
779 | if (task->task_status.resp == SAS_TASK_COMPLETE && | |
780 | task->task_status.stat == SAS_DATA_OVERRUN) { | |
781 | PM8001_FAIL_DBG(pm8001_ha, | |
782 | pm8001_printk("Blocked task error.\n")); | |
783 | res = -EMSGSIZE; | |
784 | break; | |
785 | } else { | |
97ee2088 | 786 | PM8001_EH_DBG(pm8001_ha, |
787 | pm8001_printk(" Task to dev %016llx response:" | |
788 | "0x%x status 0x%x\n", | |
dbf9bfe6 | 789 | SAS_ADDR(dev->sas_addr), |
790 | task->task_status.resp, | |
791 | task->task_status.stat)); | |
792 | pm8001_free_task(task); | |
793 | task = NULL; | |
794 | } | |
795 | } | |
796 | ex_err: | |
797 | BUG_ON(retry == 3 && task != NULL); | |
798 | if (task != NULL) | |
799 | pm8001_free_task(task); | |
800 | return res; | |
801 | } | |
802 | ||
803 | static int | |
804 | pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha, | |
805 | struct pm8001_device *pm8001_dev, struct domain_device *dev, u32 flag, | |
806 | u32 task_tag) | |
807 | { | |
808 | int res, retry; | |
97ee2088 | 809 | u32 ccb_tag; |
dbf9bfe6 | 810 | struct pm8001_ccb_info *ccb; |
811 | struct sas_task *task = NULL; | |
812 | ||
813 | for (retry = 0; retry < 3; retry++) { | |
814 | task = pm8001_alloc_task(); | |
815 | if (!task) | |
816 | return -ENOMEM; | |
817 | ||
818 | task->dev = dev; | |
819 | task->task_proto = dev->tproto; | |
820 | task->task_done = pm8001_task_done; | |
821 | task->timer.data = (unsigned long)task; | |
822 | task->timer.function = pm8001_tmf_timedout; | |
83e73329 | 823 | task->timer.expires = jiffies + PM8001_TASK_TIMEOUT * HZ; |
dbf9bfe6 | 824 | add_timer(&task->timer); |
825 | ||
97ee2088 | 826 | res = pm8001_tag_alloc(pm8001_ha, &ccb_tag); |
827 | if (res) | |
828 | return res; | |
dbf9bfe6 | 829 | ccb = &pm8001_ha->ccb_info[ccb_tag]; |
830 | ccb->device = pm8001_dev; | |
831 | ccb->ccb_tag = ccb_tag; | |
832 | ccb->task = task; | |
833 | ||
834 | res = PM8001_CHIP_DISP->task_abort(pm8001_ha, | |
835 | pm8001_dev, flag, task_tag, ccb_tag); | |
836 | ||
837 | if (res) { | |
838 | del_timer(&task->timer); | |
839 | PM8001_FAIL_DBG(pm8001_ha, | |
840 | pm8001_printk("Executing internal task " | |
841 | "failed\n")); | |
842 | goto ex_err; | |
843 | } | |
844 | wait_for_completion(&task->completion); | |
845 | res = TMF_RESP_FUNC_FAILED; | |
846 | /* Even TMF timed out, return direct. */ | |
847 | if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { | |
848 | if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { | |
849 | PM8001_FAIL_DBG(pm8001_ha, | |
850 | pm8001_printk("TMF task timeout.\n")); | |
851 | goto ex_err; | |
852 | } | |
853 | } | |
854 | ||
855 | if (task->task_status.resp == SAS_TASK_COMPLETE && | |
df64d3ca | 856 | task->task_status.stat == SAM_STAT_GOOD) { |
dbf9bfe6 | 857 | res = TMF_RESP_FUNC_COMPLETE; |
858 | break; | |
859 | ||
860 | } else { | |
97ee2088 | 861 | PM8001_EH_DBG(pm8001_ha, |
dbf9bfe6 | 862 | pm8001_printk(" Task to dev %016llx response: " |
863 | "0x%x status 0x%x\n", | |
864 | SAS_ADDR(dev->sas_addr), | |
865 | task->task_status.resp, | |
866 | task->task_status.stat)); | |
867 | pm8001_free_task(task); | |
868 | task = NULL; | |
869 | } | |
870 | } | |
871 | ex_err: | |
872 | BUG_ON(retry == 3 && task != NULL); | |
873 | if (task != NULL) | |
874 | pm8001_free_task(task); | |
875 | return res; | |
876 | } | |
877 | ||
878 | /** | |
879 | * pm8001_dev_gone_notify - see the comments for "pm8001_dev_found_notify" | |
880 | * @dev: the device structure which sas layer used. | |
881 | */ | |
882 | static void pm8001_dev_gone_notify(struct domain_device *dev) | |
883 | { | |
884 | unsigned long flags = 0; | |
885 | u32 tag; | |
886 | struct pm8001_hba_info *pm8001_ha; | |
887 | struct pm8001_device *pm8001_dev = dev->lldd_dev; | |
2471b894 | 888 | |
dbf9bfe6 | 889 | pm8001_ha = pm8001_find_ha_by_dev(dev); |
890 | spin_lock_irqsave(&pm8001_ha->lock, flags); | |
891 | pm8001_tag_alloc(pm8001_ha, &tag); | |
892 | if (pm8001_dev) { | |
2471b894 DC |
893 | u32 device_id = pm8001_dev->device_id; |
894 | ||
dbf9bfe6 | 895 | PM8001_DISC_DBG(pm8001_ha, |
896 | pm8001_printk("found dev[%d:%x] is gone.\n", | |
897 | pm8001_dev->device_id, pm8001_dev->dev_type)); | |
898 | if (pm8001_dev->running_req) { | |
899 | spin_unlock_irqrestore(&pm8001_ha->lock, flags); | |
900 | pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , | |
901 | dev, 1, 0); | |
902 | spin_lock_irqsave(&pm8001_ha->lock, flags); | |
903 | } | |
904 | PM8001_CHIP_DISP->dereg_dev_req(pm8001_ha, device_id); | |
905 | pm8001_free_dev(pm8001_dev); | |
906 | } else { | |
907 | PM8001_DISC_DBG(pm8001_ha, | |
908 | pm8001_printk("Found dev has gone.\n")); | |
909 | } | |
910 | dev->lldd_dev = NULL; | |
911 | spin_unlock_irqrestore(&pm8001_ha->lock, flags); | |
912 | } | |
913 | ||
914 | void pm8001_dev_gone(struct domain_device *dev) | |
915 | { | |
916 | pm8001_dev_gone_notify(dev); | |
917 | } | |
918 | ||
919 | static int pm8001_issue_ssp_tmf(struct domain_device *dev, | |
920 | u8 *lun, struct pm8001_tmf_task *tmf) | |
921 | { | |
922 | struct sas_ssp_task ssp_task; | |
923 | if (!(dev->tproto & SAS_PROTOCOL_SSP)) | |
924 | return TMF_RESP_FUNC_ESUPP; | |
925 | ||
926 | strncpy((u8 *)&ssp_task.LUN, lun, 8); | |
927 | return pm8001_exec_internal_tmf_task(dev, &ssp_task, sizeof(ssp_task), | |
928 | tmf); | |
929 | } | |
930 | ||
931 | /** | |
932 | * Standard mandates link reset for ATA (type 0) and hard reset for | |
933 | * SSP (type 1) , only for RECOVERY | |
934 | */ | |
935 | int pm8001_I_T_nexus_reset(struct domain_device *dev) | |
936 | { | |
937 | int rc = TMF_RESP_FUNC_FAILED; | |
938 | struct pm8001_device *pm8001_dev; | |
939 | struct pm8001_hba_info *pm8001_ha; | |
940 | struct sas_phy *phy; | |
941 | if (!dev || !dev->lldd_dev) | |
942 | return -1; | |
943 | ||
944 | pm8001_dev = dev->lldd_dev; | |
945 | pm8001_ha = pm8001_find_ha_by_dev(dev); | |
946 | phy = sas_find_local_phy(dev); | |
947 | ||
948 | if (dev_is_sata(dev)) { | |
949 | DECLARE_COMPLETION_ONSTACK(completion_setstate); | |
8257ec80 | 950 | if (scsi_is_sas_phy_local(phy)) |
951 | return 0; | |
dbf9bfe6 | 952 | rc = sas_phy_reset(phy, 1); |
953 | msleep(2000); | |
954 | rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , | |
955 | dev, 1, 0); | |
956 | pm8001_dev->setds_completion = &completion_setstate; | |
957 | rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha, | |
958 | pm8001_dev, 0x01); | |
959 | wait_for_completion(&completion_setstate); | |
960 | } else{ | |
961 | rc = sas_phy_reset(phy, 1); | |
962 | msleep(2000); | |
963 | } | |
964 | PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n", | |
965 | pm8001_dev->device_id, rc)); | |
966 | return rc; | |
967 | } | |
968 | ||
969 | /* mandatory SAM-3, the task reset the specified LUN*/ | |
970 | int pm8001_lu_reset(struct domain_device *dev, u8 *lun) | |
971 | { | |
972 | int rc = TMF_RESP_FUNC_FAILED; | |
973 | struct pm8001_tmf_task tmf_task; | |
974 | struct pm8001_device *pm8001_dev = dev->lldd_dev; | |
975 | struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev); | |
976 | if (dev_is_sata(dev)) { | |
977 | struct sas_phy *phy = sas_find_local_phy(dev); | |
978 | rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , | |
979 | dev, 1, 0); | |
980 | rc = sas_phy_reset(phy, 1); | |
981 | rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha, | |
982 | pm8001_dev, 0x01); | |
983 | msleep(2000); | |
984 | } else { | |
985 | tmf_task.tmf = TMF_LU_RESET; | |
986 | rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); | |
987 | } | |
988 | /* If failed, fall-through I_T_Nexus reset */ | |
989 | PM8001_EH_DBG(pm8001_ha, pm8001_printk("for device[%x]:rc=%d\n", | |
990 | pm8001_dev->device_id, rc)); | |
991 | return rc; | |
992 | } | |
993 | ||
994 | /* optional SAM-3 */ | |
995 | int pm8001_query_task(struct sas_task *task) | |
996 | { | |
997 | u32 tag = 0xdeadbeef; | |
998 | int i = 0; | |
999 | struct scsi_lun lun; | |
1000 | struct pm8001_tmf_task tmf_task; | |
1001 | int rc = TMF_RESP_FUNC_FAILED; | |
1002 | if (unlikely(!task || !task->lldd_task || !task->dev)) | |
1003 | return rc; | |
1004 | ||
1005 | if (task->task_proto & SAS_PROTOCOL_SSP) { | |
1006 | struct scsi_cmnd *cmnd = task->uldd_task; | |
1007 | struct domain_device *dev = task->dev; | |
1008 | struct pm8001_hba_info *pm8001_ha = | |
1009 | pm8001_find_ha_by_dev(dev); | |
1010 | ||
1011 | int_to_scsilun(cmnd->device->lun, &lun); | |
1012 | rc = pm8001_find_tag(task, &tag); | |
1013 | if (rc == 0) { | |
1014 | rc = TMF_RESP_FUNC_FAILED; | |
1015 | return rc; | |
1016 | } | |
1017 | PM8001_EH_DBG(pm8001_ha, pm8001_printk("Query:[")); | |
1018 | for (i = 0; i < 16; i++) | |
1019 | printk(KERN_INFO "%02x ", cmnd->cmnd[i]); | |
1020 | printk(KERN_INFO "]\n"); | |
1021 | tmf_task.tmf = TMF_QUERY_TASK; | |
1022 | tmf_task.tag_of_task_to_be_managed = tag; | |
1023 | ||
1024 | rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); | |
1025 | switch (rc) { | |
1026 | /* The task is still in Lun, release it then */ | |
1027 | case TMF_RESP_FUNC_SUCC: | |
1028 | PM8001_EH_DBG(pm8001_ha, | |
1029 | pm8001_printk("The task is still in Lun \n")); | |
1030 | /* The task is not in Lun or failed, reset the phy */ | |
1031 | case TMF_RESP_FUNC_FAILED: | |
1032 | case TMF_RESP_FUNC_COMPLETE: | |
1033 | PM8001_EH_DBG(pm8001_ha, | |
1034 | pm8001_printk("The task is not in Lun or failed," | |
1035 | " reset the phy \n")); | |
1036 | break; | |
1037 | } | |
1038 | } | |
1039 | pm8001_printk(":rc= %d\n", rc); | |
1040 | return rc; | |
1041 | } | |
1042 | ||
1043 | /* mandatory SAM-3, still need free task/ccb info, abord the specified task */ | |
1044 | int pm8001_abort_task(struct sas_task *task) | |
1045 | { | |
1046 | unsigned long flags; | |
1047 | u32 tag = 0xdeadbeef; | |
1048 | u32 device_id; | |
1049 | struct domain_device *dev ; | |
1050 | struct pm8001_hba_info *pm8001_ha = NULL; | |
1051 | struct pm8001_ccb_info *ccb; | |
1052 | struct scsi_lun lun; | |
1053 | struct pm8001_device *pm8001_dev; | |
1054 | struct pm8001_tmf_task tmf_task; | |
1055 | int rc = TMF_RESP_FUNC_FAILED; | |
1056 | if (unlikely(!task || !task->lldd_task || !task->dev)) | |
1057 | return rc; | |
1058 | spin_lock_irqsave(&task->task_state_lock, flags); | |
1059 | if (task->task_state_flags & SAS_TASK_STATE_DONE) { | |
1060 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
1061 | rc = TMF_RESP_FUNC_COMPLETE; | |
1062 | goto out; | |
1063 | } | |
1064 | spin_unlock_irqrestore(&task->task_state_lock, flags); | |
1065 | if (task->task_proto & SAS_PROTOCOL_SSP) { | |
1066 | struct scsi_cmnd *cmnd = task->uldd_task; | |
1067 | dev = task->dev; | |
1068 | ccb = task->lldd_task; | |
1069 | pm8001_dev = dev->lldd_dev; | |
1070 | pm8001_ha = pm8001_find_ha_by_dev(dev); | |
1071 | int_to_scsilun(cmnd->device->lun, &lun); | |
1072 | rc = pm8001_find_tag(task, &tag); | |
1073 | if (rc == 0) { | |
1074 | printk(KERN_INFO "No such tag in %s\n", __func__); | |
1075 | rc = TMF_RESP_FUNC_FAILED; | |
1076 | return rc; | |
1077 | } | |
1078 | device_id = pm8001_dev->device_id; | |
1079 | PM8001_EH_DBG(pm8001_ha, | |
97ee2088 | 1080 | pm8001_printk("abort io to deviceid= %d\n", device_id)); |
1081 | tmf_task.tmf = TMF_ABORT_TASK; | |
dbf9bfe6 | 1082 | tmf_task.tag_of_task_to_be_managed = tag; |
1083 | rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); | |
97ee2088 | 1084 | pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, |
dbf9bfe6 | 1085 | pm8001_dev->sas_device, 0, tag); |
1086 | } else if (task->task_proto & SAS_PROTOCOL_SATA || | |
1087 | task->task_proto & SAS_PROTOCOL_STP) { | |
1088 | dev = task->dev; | |
1089 | pm8001_dev = dev->lldd_dev; | |
1090 | pm8001_ha = pm8001_find_ha_by_dev(dev); | |
1091 | rc = pm8001_find_tag(task, &tag); | |
1092 | if (rc == 0) { | |
1093 | printk(KERN_INFO "No such tag in %s\n", __func__); | |
1094 | rc = TMF_RESP_FUNC_FAILED; | |
1095 | return rc; | |
1096 | } | |
1097 | rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, | |
1098 | pm8001_dev->sas_device, 0, tag); | |
1099 | } else if (task->task_proto & SAS_PROTOCOL_SMP) { | |
1100 | /* SMP */ | |
1101 | dev = task->dev; | |
1102 | pm8001_dev = dev->lldd_dev; | |
1103 | pm8001_ha = pm8001_find_ha_by_dev(dev); | |
1104 | rc = pm8001_find_tag(task, &tag); | |
1105 | if (rc == 0) { | |
1106 | printk(KERN_INFO "No such tag in %s\n", __func__); | |
1107 | rc = TMF_RESP_FUNC_FAILED; | |
1108 | return rc; | |
1109 | } | |
1110 | rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, | |
1111 | pm8001_dev->sas_device, 0, tag); | |
1112 | ||
1113 | } | |
1114 | out: | |
1115 | if (rc != TMF_RESP_FUNC_COMPLETE) | |
1116 | pm8001_printk("rc= %d\n", rc); | |
1117 | return rc; | |
1118 | } | |
1119 | ||
1120 | int pm8001_abort_task_set(struct domain_device *dev, u8 *lun) | |
1121 | { | |
1122 | int rc = TMF_RESP_FUNC_FAILED; | |
1123 | struct pm8001_tmf_task tmf_task; | |
1124 | ||
1125 | tmf_task.tmf = TMF_ABORT_TASK_SET; | |
1126 | rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); | |
1127 | return rc; | |
1128 | } | |
1129 | ||
1130 | int pm8001_clear_aca(struct domain_device *dev, u8 *lun) | |
1131 | { | |
1132 | int rc = TMF_RESP_FUNC_FAILED; | |
1133 | struct pm8001_tmf_task tmf_task; | |
1134 | ||
1135 | tmf_task.tmf = TMF_CLEAR_ACA; | |
1136 | rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); | |
1137 | ||
1138 | return rc; | |
1139 | } | |
1140 | ||
1141 | int pm8001_clear_task_set(struct domain_device *dev, u8 *lun) | |
1142 | { | |
1143 | int rc = TMF_RESP_FUNC_FAILED; | |
1144 | struct pm8001_tmf_task tmf_task; | |
1145 | struct pm8001_device *pm8001_dev = dev->lldd_dev; | |
1146 | struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev); | |
1147 | ||
1148 | PM8001_EH_DBG(pm8001_ha, | |
1149 | pm8001_printk("I_T_L_Q clear task set[%x]\n", | |
1150 | pm8001_dev->device_id)); | |
1151 | tmf_task.tmf = TMF_CLEAR_TASK_SET; | |
1152 | rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); | |
1153 | return rc; | |
1154 | } | |
1155 |