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1da177e4 | 1 | /* |
af36d7f0 JG |
2 | * libata-scsi.c - helper library for ATA |
3 | * | |
8c3d3d4b | 4 | * Maintained by: Tejun Heo <tj@kernel.org> |
af36d7f0 JG |
5 | * Please ALWAYS copy linux-ide@vger.kernel.org |
6 | * on emails. | |
7 | * | |
8 | * Copyright 2003-2004 Red Hat, Inc. All rights reserved. | |
9 | * Copyright 2003-2004 Jeff Garzik | |
10 | * | |
11 | * | |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2, or (at your option) | |
15 | * any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; see the file COPYING. If not, write to | |
24 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | * | |
26 | * | |
27 | * libata documentation is available via 'make {ps|pdf}docs', | |
28 | * as Documentation/DocBook/libata.* | |
29 | * | |
30 | * Hardware documentation available from | |
31 | * - http://www.t10.org/ | |
32 | * - http://www.t13.org/ | |
33 | * | |
1da177e4 LT |
34 | */ |
35 | ||
5a0e3ad6 | 36 | #include <linux/slab.h> |
1da177e4 LT |
37 | #include <linux/kernel.h> |
38 | #include <linux/blkdev.h> | |
39 | #include <linux/spinlock.h> | |
38789fda | 40 | #include <linux/export.h> |
1da177e4 | 41 | #include <scsi/scsi.h> |
1da177e4 | 42 | #include <scsi/scsi_host.h> |
beb40487 | 43 | #include <scsi/scsi_cmnd.h> |
85837ebd | 44 | #include <scsi/scsi_eh.h> |
005a5a06 | 45 | #include <scsi/scsi_device.h> |
a6e6ce8e | 46 | #include <scsi/scsi_tcq.h> |
30afc84c | 47 | #include <scsi/scsi_transport.h> |
1da177e4 | 48 | #include <linux/libata.h> |
b095518e | 49 | #include <linux/hdreg.h> |
2dcb407e | 50 | #include <linux/uaccess.h> |
2a6e58d2 | 51 | #include <linux/suspend.h> |
18f0f978 | 52 | #include <asm/unaligned.h> |
8e061784 | 53 | #include <linux/ioprio.h> |
1da177e4 LT |
54 | |
55 | #include "libata.h" | |
d9027470 | 56 | #include "libata-transport.h" |
1da177e4 | 57 | |
87340e98 TH |
58 | #define ATA_SCSI_RBUF_SIZE 4096 |
59 | ||
60 | static DEFINE_SPINLOCK(ata_scsi_rbuf_lock); | |
61 | static u8 ata_scsi_rbuf[ATA_SCSI_RBUF_SIZE]; | |
b095518e | 62 | |
ad706991 | 63 | typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc); |
ab5b3a5b | 64 | |
2dcb407e | 65 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
ab5b3a5b | 66 | const struct scsi_device *scsidev); |
2dcb407e | 67 | static struct ata_device *ata_scsi_find_dev(struct ata_port *ap, |
ab5b3a5b | 68 | const struct scsi_device *scsidev); |
1da177e4 | 69 | |
00ac37f5 DG |
70 | #define RW_RECOVERY_MPAGE 0x1 |
71 | #define RW_RECOVERY_MPAGE_LEN 12 | |
72 | #define CACHE_MPAGE 0x8 | |
73 | #define CACHE_MPAGE_LEN 20 | |
74 | #define CONTROL_MPAGE 0xa | |
75 | #define CONTROL_MPAGE_LEN 12 | |
76 | #define ALL_MPAGES 0x3f | |
77 | #define ALL_SUB_MPAGES 0xff | |
78 | ||
79 | ||
24f75686 | 80 | static const u8 def_rw_recovery_mpage[RW_RECOVERY_MPAGE_LEN] = { |
00ac37f5 DG |
81 | RW_RECOVERY_MPAGE, |
82 | RW_RECOVERY_MPAGE_LEN - 2, | |
24f75686 | 83 | (1 << 7), /* AWRE */ |
00ac37f5 DG |
84 | 0, /* read retry count */ |
85 | 0, 0, 0, 0, | |
86 | 0, /* write retry count */ | |
87 | 0, 0, 0 | |
88 | }; | |
89 | ||
90 | static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = { | |
91 | CACHE_MPAGE, | |
92 | CACHE_MPAGE_LEN - 2, | |
93 | 0, /* contains WCE, needs to be 0 for logic */ | |
94 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
95 | 0, /* contains DRA, needs to be 0 for logic */ | |
96 | 0, 0, 0, 0, 0, 0, 0 | |
97 | }; | |
98 | ||
99 | static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = { | |
100 | CONTROL_MPAGE, | |
101 | CONTROL_MPAGE_LEN - 2, | |
102 | 2, /* DSENSE=0, GLTSD=1 */ | |
103 | 0, /* [QAM+QERR may be 1, see 05-359r1] */ | |
104 | 0, 0, 0, 0, 0xff, 0xff, | |
105 | 0, 30 /* extended self test time, see 05-359r1 */ | |
106 | }; | |
107 | ||
c93b263e TH |
108 | static const char *ata_lpm_policy_names[] = { |
109 | [ATA_LPM_UNKNOWN] = "max_performance", | |
110 | [ATA_LPM_MAX_POWER] = "max_performance", | |
111 | [ATA_LPM_MED_POWER] = "medium_power", | |
112 | [ATA_LPM_MIN_POWER] = "min_power", | |
ca77329f KCA |
113 | }; |
114 | ||
ecd75ad5 | 115 | static ssize_t ata_scsi_lpm_store(struct device *device, |
c93b263e TH |
116 | struct device_attribute *attr, |
117 | const char *buf, size_t count) | |
ca77329f | 118 | { |
ecd75ad5 | 119 | struct Scsi_Host *shost = class_to_shost(device); |
ca77329f | 120 | struct ata_port *ap = ata_shost_to_port(shost); |
ecd75ad5 TH |
121 | struct ata_link *link; |
122 | struct ata_device *dev; | |
c93b263e | 123 | enum ata_lpm_policy policy; |
6b7ae954 | 124 | unsigned long flags; |
c93b263e TH |
125 | |
126 | /* UNKNOWN is internal state, iterate from MAX_POWER */ | |
127 | for (policy = ATA_LPM_MAX_POWER; | |
128 | policy < ARRAY_SIZE(ata_lpm_policy_names); policy++) { | |
129 | const char *name = ata_lpm_policy_names[policy]; | |
130 | ||
131 | if (strncmp(name, buf, strlen(name)) == 0) | |
ca77329f | 132 | break; |
ca77329f | 133 | } |
c93b263e | 134 | if (policy == ARRAY_SIZE(ata_lpm_policy_names)) |
ca77329f KCA |
135 | return -EINVAL; |
136 | ||
6b7ae954 | 137 | spin_lock_irqsave(ap->lock, flags); |
ecd75ad5 TH |
138 | |
139 | ata_for_each_link(link, ap, EDGE) { | |
140 | ata_for_each_dev(dev, &ap->link, ENABLED) { | |
141 | if (dev->horkage & ATA_HORKAGE_NOLPM) { | |
142 | count = -EOPNOTSUPP; | |
143 | goto out_unlock; | |
144 | } | |
145 | } | |
146 | } | |
147 | ||
6b7ae954 TH |
148 | ap->target_lpm_policy = policy; |
149 | ata_port_schedule_eh(ap); | |
ecd75ad5 | 150 | out_unlock: |
6b7ae954 | 151 | spin_unlock_irqrestore(ap->lock, flags); |
ca77329f KCA |
152 | return count; |
153 | } | |
154 | ||
c93b263e TH |
155 | static ssize_t ata_scsi_lpm_show(struct device *dev, |
156 | struct device_attribute *attr, char *buf) | |
ca77329f | 157 | { |
ee959b00 | 158 | struct Scsi_Host *shost = class_to_shost(dev); |
ca77329f | 159 | struct ata_port *ap = ata_shost_to_port(shost); |
ca77329f | 160 | |
6b7ae954 | 161 | if (ap->target_lpm_policy >= ARRAY_SIZE(ata_lpm_policy_names)) |
ca77329f KCA |
162 | return -EINVAL; |
163 | ||
c93b263e | 164 | return snprintf(buf, PAGE_SIZE, "%s\n", |
6b7ae954 | 165 | ata_lpm_policy_names[ap->target_lpm_policy]); |
ca77329f | 166 | } |
ee959b00 | 167 | DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR, |
c93b263e | 168 | ata_scsi_lpm_show, ata_scsi_lpm_store); |
ee959b00 | 169 | EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy); |
ca77329f | 170 | |
45fabbb7 EO |
171 | static ssize_t ata_scsi_park_show(struct device *device, |
172 | struct device_attribute *attr, char *buf) | |
173 | { | |
174 | struct scsi_device *sdev = to_scsi_device(device); | |
175 | struct ata_port *ap; | |
176 | struct ata_link *link; | |
177 | struct ata_device *dev; | |
3948b6f2 | 178 | unsigned long now; |
45fabbb7 EO |
179 | unsigned int uninitialized_var(msecs); |
180 | int rc = 0; | |
181 | ||
182 | ap = ata_shost_to_port(sdev->host); | |
183 | ||
3948b6f2 | 184 | spin_lock_irq(ap->lock); |
45fabbb7 EO |
185 | dev = ata_scsi_find_dev(ap, sdev); |
186 | if (!dev) { | |
187 | rc = -ENODEV; | |
188 | goto unlock; | |
189 | } | |
190 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { | |
191 | rc = -EOPNOTSUPP; | |
192 | goto unlock; | |
193 | } | |
194 | ||
195 | link = dev->link; | |
a464189d | 196 | now = jiffies; |
45fabbb7 EO |
197 | if (ap->pflags & ATA_PFLAG_EH_IN_PROGRESS && |
198 | link->eh_context.unloaded_mask & (1 << dev->devno) && | |
a464189d EO |
199 | time_after(dev->unpark_deadline, now)) |
200 | msecs = jiffies_to_msecs(dev->unpark_deadline - now); | |
45fabbb7 EO |
201 | else |
202 | msecs = 0; | |
203 | ||
204 | unlock: | |
205 | spin_unlock_irq(ap->lock); | |
206 | ||
207 | return rc ? rc : snprintf(buf, 20, "%u\n", msecs); | |
208 | } | |
209 | ||
210 | static ssize_t ata_scsi_park_store(struct device *device, | |
211 | struct device_attribute *attr, | |
212 | const char *buf, size_t len) | |
213 | { | |
214 | struct scsi_device *sdev = to_scsi_device(device); | |
215 | struct ata_port *ap; | |
216 | struct ata_device *dev; | |
217 | long int input; | |
218 | unsigned long flags; | |
219 | int rc; | |
220 | ||
42b9ab7a JH |
221 | rc = kstrtol(buf, 10, &input); |
222 | if (rc) | |
223 | return rc; | |
224 | if (input < -2) | |
45fabbb7 EO |
225 | return -EINVAL; |
226 | if (input > ATA_TMOUT_MAX_PARK) { | |
227 | rc = -EOVERFLOW; | |
228 | input = ATA_TMOUT_MAX_PARK; | |
229 | } | |
230 | ||
231 | ap = ata_shost_to_port(sdev->host); | |
232 | ||
233 | spin_lock_irqsave(ap->lock, flags); | |
234 | dev = ata_scsi_find_dev(ap, sdev); | |
235 | if (unlikely(!dev)) { | |
236 | rc = -ENODEV; | |
237 | goto unlock; | |
238 | } | |
9162c657 HR |
239 | if (dev->class != ATA_DEV_ATA && |
240 | dev->class != ATA_DEV_ZAC) { | |
45fabbb7 EO |
241 | rc = -EOPNOTSUPP; |
242 | goto unlock; | |
243 | } | |
244 | ||
245 | if (input >= 0) { | |
246 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { | |
247 | rc = -EOPNOTSUPP; | |
248 | goto unlock; | |
249 | } | |
250 | ||
251 | dev->unpark_deadline = ata_deadline(jiffies, input); | |
252 | dev->link->eh_info.dev_action[dev->devno] |= ATA_EH_PARK; | |
253 | ata_port_schedule_eh(ap); | |
254 | complete(&ap->park_req_pending); | |
255 | } else { | |
256 | switch (input) { | |
257 | case -1: | |
258 | dev->flags &= ~ATA_DFLAG_NO_UNLOAD; | |
259 | break; | |
260 | case -2: | |
261 | dev->flags |= ATA_DFLAG_NO_UNLOAD; | |
262 | break; | |
263 | } | |
264 | } | |
265 | unlock: | |
266 | spin_unlock_irqrestore(ap->lock, flags); | |
267 | ||
268 | return rc ? rc : len; | |
269 | } | |
270 | DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR, | |
271 | ata_scsi_park_show, ata_scsi_park_store); | |
272 | EXPORT_SYMBOL_GPL(dev_attr_unload_heads); | |
273 | ||
84f95243 | 274 | static ssize_t ata_ncq_prio_enable_show(struct device *device, |
9f56eca3 AM |
275 | struct device_attribute *attr, |
276 | char *buf) | |
84f95243 AM |
277 | { |
278 | struct scsi_device *sdev = to_scsi_device(device); | |
279 | struct ata_port *ap; | |
280 | struct ata_device *dev; | |
281 | bool ncq_prio_enable; | |
282 | int rc = 0; | |
283 | ||
284 | ap = ata_shost_to_port(sdev->host); | |
285 | ||
286 | spin_lock_irq(ap->lock); | |
287 | dev = ata_scsi_find_dev(ap, sdev); | |
288 | if (!dev) { | |
289 | rc = -ENODEV; | |
290 | goto unlock; | |
291 | } | |
292 | ||
293 | ncq_prio_enable = dev->flags & ATA_DFLAG_NCQ_PRIO_ENABLE; | |
294 | ||
295 | unlock: | |
296 | spin_unlock_irq(ap->lock); | |
297 | ||
298 | return rc ? rc : snprintf(buf, 20, "%u\n", ncq_prio_enable); | |
299 | } | |
300 | ||
301 | static ssize_t ata_ncq_prio_enable_store(struct device *device, | |
302 | struct device_attribute *attr, | |
303 | const char *buf, size_t len) | |
304 | { | |
305 | struct scsi_device *sdev = to_scsi_device(device); | |
306 | struct ata_port *ap; | |
307 | struct ata_device *dev; | |
308 | long int input; | |
84f95243 AM |
309 | int rc; |
310 | ||
311 | rc = kstrtol(buf, 10, &input); | |
312 | if (rc) | |
313 | return rc; | |
314 | if ((input < 0) || (input > 1)) | |
315 | return -EINVAL; | |
316 | ||
317 | ap = ata_shost_to_port(sdev->host); | |
84f95243 | 318 | dev = ata_scsi_find_dev(ap, sdev); |
9f56eca3 AM |
319 | if (unlikely(!dev)) |
320 | return -ENODEV; | |
321 | ||
322 | spin_lock_irq(ap->lock); | |
323 | if (input) | |
324 | dev->flags |= ATA_DFLAG_NCQ_PRIO_ENABLE; | |
325 | else | |
326 | dev->flags &= ~ATA_DFLAG_NCQ_PRIO_ENABLE; | |
327 | ||
328 | dev->link->eh_info.action |= ATA_EH_REVALIDATE; | |
329 | dev->link->eh_info.flags |= ATA_EHI_QUIET; | |
330 | ata_port_schedule_eh(ap); | |
331 | spin_unlock_irq(ap->lock); | |
332 | ||
333 | ata_port_wait_eh(ap); | |
84f95243 | 334 | |
4e647d96 | 335 | if (input) { |
9f56eca3 | 336 | spin_lock_irq(ap->lock); |
4e647d96 | 337 | if (!(dev->flags & ATA_DFLAG_NCQ_PRIO)) { |
9f56eca3 AM |
338 | dev->flags &= ~ATA_DFLAG_NCQ_PRIO_ENABLE; |
339 | rc = -EIO; | |
4e647d96 | 340 | } |
9f56eca3 | 341 | spin_unlock_irq(ap->lock); |
4e647d96 | 342 | } |
84f95243 | 343 | |
84f95243 AM |
344 | return rc ? rc : len; |
345 | } | |
346 | ||
347 | DEVICE_ATTR(ncq_prio_enable, S_IRUGO | S_IWUSR, | |
348 | ata_ncq_prio_enable_show, ata_ncq_prio_enable_store); | |
349 | EXPORT_SYMBOL_GPL(dev_attr_ncq_prio_enable); | |
350 | ||
06dbde5f HR |
351 | void ata_scsi_set_sense(struct ata_device *dev, struct scsi_cmnd *cmd, |
352 | u8 sk, u8 asc, u8 ascq) | |
f0761be3 | 353 | { |
06dbde5f HR |
354 | bool d_sense = (dev->flags & ATA_DFLAG_D_SENSE); |
355 | ||
5b01e4b9 HR |
356 | if (!cmd) |
357 | return; | |
358 | ||
f0761be3 TH |
359 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
360 | ||
06dbde5f | 361 | scsi_build_sense_buffer(d_sense, cmd->sense_buffer, sk, asc, ascq); |
f0761be3 TH |
362 | } |
363 | ||
492bf621 HR |
364 | void ata_scsi_set_sense_information(struct ata_device *dev, |
365 | struct scsi_cmnd *cmd, | |
366 | const struct ata_taskfile *tf) | |
367 | { | |
368 | u64 information; | |
369 | ||
370 | if (!cmd) | |
371 | return; | |
372 | ||
373 | information = ata_tf_read_block(tf, dev); | |
374 | if (information == U64_MAX) | |
375 | return; | |
376 | ||
377 | scsi_set_sense_information(cmd->sense_buffer, | |
378 | SCSI_SENSE_BUFFERSIZE, information); | |
379 | } | |
380 | ||
bcfc867d | 381 | static void ata_scsi_set_invalid_field(struct ata_device *dev, |
0df10b84 | 382 | struct scsi_cmnd *cmd, u16 field, u8 bit) |
bcfc867d HR |
383 | { |
384 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x24, 0x0); | |
8554e5e1 | 385 | /* "Invalid field in CDB" */ |
bcfc867d | 386 | scsi_set_sense_field_pointer(cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE, |
0df10b84 | 387 | field, bit, 1); |
bcfc867d HR |
388 | } |
389 | ||
7780081c HR |
390 | static void ata_scsi_set_invalid_parameter(struct ata_device *dev, |
391 | struct scsi_cmnd *cmd, u16 field) | |
392 | { | |
393 | /* "Invalid field in parameter list" */ | |
394 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x26, 0x0); | |
395 | scsi_set_sense_field_pointer(cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE, | |
396 | field, 0xff, 0); | |
f0761be3 TH |
397 | } |
398 | ||
18f7ba4c KCA |
399 | static ssize_t |
400 | ata_scsi_em_message_store(struct device *dev, struct device_attribute *attr, | |
401 | const char *buf, size_t count) | |
402 | { | |
403 | struct Scsi_Host *shost = class_to_shost(dev); | |
404 | struct ata_port *ap = ata_shost_to_port(shost); | |
405 | if (ap->ops->em_store && (ap->flags & ATA_FLAG_EM)) | |
406 | return ap->ops->em_store(ap, buf, count); | |
407 | return -EINVAL; | |
408 | } | |
409 | ||
410 | static ssize_t | |
411 | ata_scsi_em_message_show(struct device *dev, struct device_attribute *attr, | |
412 | char *buf) | |
413 | { | |
414 | struct Scsi_Host *shost = class_to_shost(dev); | |
415 | struct ata_port *ap = ata_shost_to_port(shost); | |
416 | ||
417 | if (ap->ops->em_show && (ap->flags & ATA_FLAG_EM)) | |
418 | return ap->ops->em_show(ap, buf); | |
419 | return -EINVAL; | |
420 | } | |
ea7a5ed5 | 421 | DEVICE_ATTR(em_message, S_IRUGO | S_IWUSR, |
18f7ba4c KCA |
422 | ata_scsi_em_message_show, ata_scsi_em_message_store); |
423 | EXPORT_SYMBOL_GPL(dev_attr_em_message); | |
424 | ||
425 | static ssize_t | |
426 | ata_scsi_em_message_type_show(struct device *dev, struct device_attribute *attr, | |
427 | char *buf) | |
428 | { | |
429 | struct Scsi_Host *shost = class_to_shost(dev); | |
430 | struct ata_port *ap = ata_shost_to_port(shost); | |
431 | ||
432 | return snprintf(buf, 23, "%d\n", ap->em_message_type); | |
433 | } | |
434 | DEVICE_ATTR(em_message_type, S_IRUGO, | |
435 | ata_scsi_em_message_type_show, NULL); | |
436 | EXPORT_SYMBOL_GPL(dev_attr_em_message_type); | |
437 | ||
438 | static ssize_t | |
439 | ata_scsi_activity_show(struct device *dev, struct device_attribute *attr, | |
440 | char *buf) | |
441 | { | |
442 | struct scsi_device *sdev = to_scsi_device(dev); | |
443 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
444 | struct ata_device *atadev = ata_scsi_find_dev(ap, sdev); | |
445 | ||
26cd4d65 XF |
446 | if (atadev && ap->ops->sw_activity_show && |
447 | (ap->flags & ATA_FLAG_SW_ACTIVITY)) | |
18f7ba4c KCA |
448 | return ap->ops->sw_activity_show(atadev, buf); |
449 | return -EINVAL; | |
450 | } | |
451 | ||
452 | static ssize_t | |
453 | ata_scsi_activity_store(struct device *dev, struct device_attribute *attr, | |
454 | const char *buf, size_t count) | |
455 | { | |
456 | struct scsi_device *sdev = to_scsi_device(dev); | |
457 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
458 | struct ata_device *atadev = ata_scsi_find_dev(ap, sdev); | |
459 | enum sw_activity val; | |
460 | int rc; | |
461 | ||
26cd4d65 XF |
462 | if (atadev && ap->ops->sw_activity_store && |
463 | (ap->flags & ATA_FLAG_SW_ACTIVITY)) { | |
18f7ba4c KCA |
464 | val = simple_strtoul(buf, NULL, 0); |
465 | switch (val) { | |
466 | case OFF: case BLINK_ON: case BLINK_OFF: | |
467 | rc = ap->ops->sw_activity_store(atadev, val); | |
468 | if (!rc) | |
469 | return count; | |
470 | else | |
471 | return rc; | |
472 | } | |
473 | } | |
474 | return -EINVAL; | |
475 | } | |
ea7a5ed5 | 476 | DEVICE_ATTR(sw_activity, S_IWUSR | S_IRUGO, ata_scsi_activity_show, |
18f7ba4c KCA |
477 | ata_scsi_activity_store); |
478 | EXPORT_SYMBOL_GPL(dev_attr_sw_activity); | |
479 | ||
45fabbb7 EO |
480 | struct device_attribute *ata_common_sdev_attrs[] = { |
481 | &dev_attr_unload_heads, | |
84f95243 | 482 | &dev_attr_ncq_prio_enable, |
45fabbb7 EO |
483 | NULL |
484 | }; | |
485 | EXPORT_SYMBOL_GPL(ata_common_sdev_attrs); | |
486 | ||
1da177e4 LT |
487 | /** |
488 | * ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd. | |
489 | * @sdev: SCSI device for which BIOS geometry is to be determined | |
490 | * @bdev: block device associated with @sdev | |
491 | * @capacity: capacity of SCSI device | |
492 | * @geom: location to which geometry will be output | |
493 | * | |
494 | * Generic bios head/sector/cylinder calculator | |
495 | * used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS) | |
496 | * mapping. Some situations may arise where the disk is not | |
497 | * bootable if this is not used. | |
498 | * | |
499 | * LOCKING: | |
500 | * Defined by the SCSI layer. We don't really care. | |
501 | * | |
502 | * RETURNS: | |
503 | * Zero. | |
504 | */ | |
505 | int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, | |
506 | sector_t capacity, int geom[]) | |
507 | { | |
508 | geom[0] = 255; | |
509 | geom[1] = 63; | |
510 | sector_div(capacity, 255*63); | |
511 | geom[2] = capacity; | |
512 | ||
513 | return 0; | |
514 | } | |
515 | ||
d8d9129e TH |
516 | /** |
517 | * ata_scsi_unlock_native_capacity - unlock native capacity | |
518 | * @sdev: SCSI device to adjust device capacity for | |
519 | * | |
520 | * This function is called if a partition on @sdev extends beyond | |
521 | * the end of the device. It requests EH to unlock HPA. | |
522 | * | |
523 | * LOCKING: | |
524 | * Defined by the SCSI layer. Might sleep. | |
525 | */ | |
526 | void ata_scsi_unlock_native_capacity(struct scsi_device *sdev) | |
527 | { | |
528 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
529 | struct ata_device *dev; | |
530 | unsigned long flags; | |
531 | ||
532 | spin_lock_irqsave(ap->lock, flags); | |
533 | ||
534 | dev = ata_scsi_find_dev(ap, sdev); | |
535 | if (dev && dev->n_sectors < dev->n_native_sectors) { | |
536 | dev->flags |= ATA_DFLAG_UNLOCK_HPA; | |
537 | dev->link->eh_info.action |= ATA_EH_RESET; | |
538 | ata_port_schedule_eh(ap); | |
539 | } | |
540 | ||
541 | spin_unlock_irqrestore(ap->lock, flags); | |
542 | ata_port_wait_eh(ap); | |
543 | } | |
544 | ||
5924b74c TH |
545 | /** |
546 | * ata_get_identity - Handler for HDIO_GET_IDENTITY ioctl | |
5eb66fe0 | 547 | * @ap: target port |
5924b74c TH |
548 | * @sdev: SCSI device to get identify data for |
549 | * @arg: User buffer area for identify data | |
550 | * | |
551 | * LOCKING: | |
552 | * Defined by the SCSI layer. We don't really care. | |
553 | * | |
554 | * RETURNS: | |
555 | * Zero on success, negative errno on error. | |
556 | */ | |
94be9a58 JG |
557 | static int ata_get_identity(struct ata_port *ap, struct scsi_device *sdev, |
558 | void __user *arg) | |
5924b74c | 559 | { |
5924b74c TH |
560 | struct ata_device *dev = ata_scsi_find_dev(ap, sdev); |
561 | u16 __user *dst = arg; | |
562 | char buf[40]; | |
563 | ||
564 | if (!dev) | |
565 | return -ENOMSG; | |
566 | ||
567 | if (copy_to_user(dst, dev->id, ATA_ID_WORDS * sizeof(u16))) | |
568 | return -EFAULT; | |
569 | ||
570 | ata_id_string(dev->id, buf, ATA_ID_PROD, ATA_ID_PROD_LEN); | |
571 | if (copy_to_user(dst + ATA_ID_PROD, buf, ATA_ID_PROD_LEN)) | |
572 | return -EFAULT; | |
573 | ||
574 | ata_id_string(dev->id, buf, ATA_ID_FW_REV, ATA_ID_FW_REV_LEN); | |
575 | if (copy_to_user(dst + ATA_ID_FW_REV, buf, ATA_ID_FW_REV_LEN)) | |
576 | return -EFAULT; | |
577 | ||
578 | ata_id_string(dev->id, buf, ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
579 | if (copy_to_user(dst + ATA_ID_SERNO, buf, ATA_ID_SERNO_LEN)) | |
580 | return -EFAULT; | |
581 | ||
582 | return 0; | |
583 | } | |
584 | ||
b095518e JG |
585 | /** |
586 | * ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl | |
8e8b77dd | 587 | * @scsidev: Device to which we are issuing command |
b095518e JG |
588 | * @arg: User provided data for issuing command |
589 | * | |
590 | * LOCKING: | |
591 | * Defined by the SCSI layer. We don't really care. | |
592 | * | |
593 | * RETURNS: | |
594 | * Zero on success, negative errno on error. | |
595 | */ | |
b095518e JG |
596 | int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg) |
597 | { | |
598 | int rc = 0; | |
599 | u8 scsi_cmd[MAX_COMMAND_SIZE]; | |
bbe1fe7e | 600 | u8 args[4], *argbuf = NULL, *sensebuf = NULL; |
b095518e | 601 | int argsize = 0; |
85837ebd | 602 | enum dma_data_direction data_dir; |
76aaf87b | 603 | struct scsi_sense_hdr sshdr; |
bbe1fe7e | 604 | int cmd_result; |
b095518e | 605 | |
c893a3ae | 606 | if (arg == NULL) |
b095518e JG |
607 | return -EINVAL; |
608 | ||
609 | if (copy_from_user(args, arg, sizeof(args))) | |
610 | return -EFAULT; | |
611 | ||
bbe1fe7e ET |
612 | sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO); |
613 | if (!sensebuf) | |
614 | return -ENOMEM; | |
615 | ||
b095518e JG |
616 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
617 | ||
618 | if (args[3]) { | |
295124dc | 619 | argsize = ATA_SECT_SIZE * args[3]; |
b095518e | 620 | argbuf = kmalloc(argsize, GFP_KERNEL); |
54dac83c JR |
621 | if (argbuf == NULL) { |
622 | rc = -ENOMEM; | |
623 | goto error; | |
624 | } | |
b095518e JG |
625 | |
626 | scsi_cmd[1] = (4 << 1); /* PIO Data-in */ | |
627 | scsi_cmd[2] = 0x0e; /* no off.line or cc, read from dev, | |
2dcb407e | 628 | block count in sector count field */ |
85837ebd | 629 | data_dir = DMA_FROM_DEVICE; |
b095518e JG |
630 | } else { |
631 | scsi_cmd[1] = (3 << 1); /* Non-data */ | |
bbe1fe7e | 632 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
85837ebd | 633 | data_dir = DMA_NONE; |
b095518e JG |
634 | } |
635 | ||
636 | scsi_cmd[0] = ATA_16; | |
637 | ||
638 | scsi_cmd[4] = args[2]; | |
a4f19040 | 639 | if (args[0] == ATA_CMD_SMART) { /* hack -- ide driver does this too */ |
b095518e JG |
640 | scsi_cmd[6] = args[3]; |
641 | scsi_cmd[8] = args[1]; | |
642 | scsi_cmd[10] = 0x4f; | |
643 | scsi_cmd[12] = 0xc2; | |
644 | } else { | |
645 | scsi_cmd[6] = args[1]; | |
646 | } | |
647 | scsi_cmd[14] = args[0]; | |
648 | ||
649 | /* Good values for timeout and retries? Values below | |
650 | from scsi_ioctl_send_command() for default case... */ | |
bbe1fe7e | 651 | cmd_result = scsi_execute(scsidev, scsi_cmd, data_dir, argbuf, argsize, |
76aaf87b | 652 | sensebuf, &sshdr, (10*HZ), 5, 0, 0, NULL); |
bbe1fe7e ET |
653 | |
654 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ | |
655 | u8 *desc = sensebuf + 8; | |
656 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ | |
657 | ||
658 | /* If we set cc then ATA pass-through will cause a | |
659 | * check condition even if no error. Filter that. */ | |
660 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { | |
6d3bfc7b KM |
661 | if (sshdr.sense_key == RECOVERED_ERROR && |
662 | sshdr.asc == 0 && sshdr.ascq == 0x1d) | |
bbe1fe7e ET |
663 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
664 | } | |
665 | ||
666 | /* Send userspace a few ATA registers (same as drivers/ide) */ | |
2dcb407e JG |
667 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ |
668 | desc[0] == 0x09) { /* code is "ATA Descriptor" */ | |
669 | args[0] = desc[13]; /* status */ | |
670 | args[1] = desc[3]; /* error */ | |
671 | args[2] = desc[5]; /* sector count (0:7) */ | |
bbe1fe7e ET |
672 | if (copy_to_user(arg, args, sizeof(args))) |
673 | rc = -EFAULT; | |
674 | } | |
675 | } | |
676 | ||
677 | ||
678 | if (cmd_result) { | |
b095518e JG |
679 | rc = -EIO; |
680 | goto error; | |
681 | } | |
682 | ||
b095518e | 683 | if ((argbuf) |
c893a3ae | 684 | && copy_to_user(arg + sizeof(args), argbuf, argsize)) |
b095518e JG |
685 | rc = -EFAULT; |
686 | error: | |
bbe1fe7e | 687 | kfree(sensebuf); |
8f760780 | 688 | kfree(argbuf); |
b095518e JG |
689 | return rc; |
690 | } | |
691 | ||
692 | /** | |
693 | * ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl | |
8e8b77dd | 694 | * @scsidev: Device to which we are issuing command |
b095518e JG |
695 | * @arg: User provided data for issuing command |
696 | * | |
697 | * LOCKING: | |
698 | * Defined by the SCSI layer. We don't really care. | |
699 | * | |
700 | * RETURNS: | |
701 | * Zero on success, negative errno on error. | |
702 | */ | |
703 | int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) | |
704 | { | |
705 | int rc = 0; | |
706 | u8 scsi_cmd[MAX_COMMAND_SIZE]; | |
af068bd1 | 707 | u8 args[7], *sensebuf = NULL; |
76aaf87b | 708 | struct scsi_sense_hdr sshdr; |
af068bd1 | 709 | int cmd_result; |
b095518e | 710 | |
c893a3ae | 711 | if (arg == NULL) |
b095518e JG |
712 | return -EINVAL; |
713 | ||
714 | if (copy_from_user(args, arg, sizeof(args))) | |
715 | return -EFAULT; | |
716 | ||
af068bd1 DM |
717 | sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO); |
718 | if (!sensebuf) | |
719 | return -ENOMEM; | |
720 | ||
b095518e JG |
721 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
722 | scsi_cmd[0] = ATA_16; | |
723 | scsi_cmd[1] = (3 << 1); /* Non-data */ | |
af068bd1 | 724 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
b095518e JG |
725 | scsi_cmd[4] = args[1]; |
726 | scsi_cmd[6] = args[2]; | |
727 | scsi_cmd[8] = args[3]; | |
728 | scsi_cmd[10] = args[4]; | |
729 | scsi_cmd[12] = args[5]; | |
277239f2 | 730 | scsi_cmd[13] = args[6] & 0x4f; |
b095518e JG |
731 | scsi_cmd[14] = args[0]; |
732 | ||
b095518e | 733 | /* Good values for timeout and retries? Values below |
2e9edbf8 | 734 | from scsi_ioctl_send_command() for default case... */ |
af068bd1 | 735 | cmd_result = scsi_execute(scsidev, scsi_cmd, DMA_NONE, NULL, 0, |
76aaf87b | 736 | sensebuf, &sshdr, (10*HZ), 5, 0, 0, NULL); |
af068bd1 DM |
737 | |
738 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ | |
739 | u8 *desc = sensebuf + 8; | |
740 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ | |
741 | ||
742 | /* If we set cc then ATA pass-through will cause a | |
743 | * check condition even if no error. Filter that. */ | |
744 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { | |
6d3bfc7b KM |
745 | if (sshdr.sense_key == RECOVERED_ERROR && |
746 | sshdr.asc == 0 && sshdr.ascq == 0x1d) | |
af068bd1 DM |
747 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
748 | } | |
749 | ||
750 | /* Send userspace ATA registers */ | |
751 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ | |
752 | desc[0] == 0x09) {/* code is "ATA Descriptor" */ | |
753 | args[0] = desc[13]; /* status */ | |
754 | args[1] = desc[3]; /* error */ | |
755 | args[2] = desc[5]; /* sector count (0:7) */ | |
756 | args[3] = desc[7]; /* lbal */ | |
757 | args[4] = desc[9]; /* lbam */ | |
758 | args[5] = desc[11]; /* lbah */ | |
759 | args[6] = desc[12]; /* select */ | |
760 | if (copy_to_user(arg, args, sizeof(args))) | |
761 | rc = -EFAULT; | |
762 | } | |
763 | } | |
764 | ||
765 | if (cmd_result) { | |
b095518e | 766 | rc = -EIO; |
af068bd1 DM |
767 | goto error; |
768 | } | |
b095518e | 769 | |
af068bd1 DM |
770 | error: |
771 | kfree(sensebuf); | |
b095518e JG |
772 | return rc; |
773 | } | |
774 | ||
e3cf95dd AC |
775 | static int ata_ioc32(struct ata_port *ap) |
776 | { | |
777 | if (ap->flags & ATA_FLAG_PIO_DMA) | |
778 | return 1; | |
779 | if (ap->pflags & ATA_PFLAG_PIO32) | |
780 | return 1; | |
781 | return 0; | |
782 | } | |
783 | ||
94be9a58 JG |
784 | int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev, |
785 | int cmd, void __user *arg) | |
1da177e4 | 786 | { |
287e6611 AB |
787 | unsigned long val; |
788 | int rc = -EINVAL; | |
e3cf95dd | 789 | unsigned long flags; |
1da177e4 | 790 | |
1da177e4 | 791 | switch (cmd) { |
287e6611 | 792 | case HDIO_GET_32BIT: |
e3cf95dd AC |
793 | spin_lock_irqsave(ap->lock, flags); |
794 | val = ata_ioc32(ap); | |
795 | spin_unlock_irqrestore(ap->lock, flags); | |
287e6611 | 796 | return put_user(val, (unsigned long __user *)arg); |
1da177e4 | 797 | |
287e6611 | 798 | case HDIO_SET_32BIT: |
1da177e4 | 799 | val = (unsigned long) arg; |
e3cf95dd AC |
800 | rc = 0; |
801 | spin_lock_irqsave(ap->lock, flags); | |
802 | if (ap->pflags & ATA_PFLAG_PIO32CHANGE) { | |
803 | if (val) | |
804 | ap->pflags |= ATA_PFLAG_PIO32; | |
805 | else | |
806 | ap->pflags &= ~ATA_PFLAG_PIO32; | |
807 | } else { | |
808 | if (val != ata_ioc32(ap)) | |
809 | rc = -EINVAL; | |
810 | } | |
811 | spin_unlock_irqrestore(ap->lock, flags); | |
812 | return rc; | |
1da177e4 | 813 | |
5924b74c | 814 | case HDIO_GET_IDENTITY: |
94be9a58 | 815 | return ata_get_identity(ap, scsidev, arg); |
5924b74c | 816 | |
b095518e JG |
817 | case HDIO_DRIVE_CMD: |
818 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
819 | return -EACCES; | |
820 | return ata_cmd_ioctl(scsidev, arg); | |
821 | ||
822 | case HDIO_DRIVE_TASK: | |
823 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
824 | return -EACCES; | |
825 | return ata_task_ioctl(scsidev, arg); | |
826 | ||
1da177e4 LT |
827 | default: |
828 | rc = -ENOTTY; | |
829 | break; | |
830 | } | |
831 | ||
1da177e4 LT |
832 | return rc; |
833 | } | |
94be9a58 JG |
834 | EXPORT_SYMBOL_GPL(ata_sas_scsi_ioctl); |
835 | ||
836 | int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg) | |
837 | { | |
838 | return ata_sas_scsi_ioctl(ata_shost_to_port(scsidev->host), | |
839 | scsidev, cmd, arg); | |
840 | } | |
841 | EXPORT_SYMBOL_GPL(ata_scsi_ioctl); | |
1da177e4 LT |
842 | |
843 | /** | |
844 | * ata_scsi_qc_new - acquire new ata_queued_cmd reference | |
1da177e4 LT |
845 | * @dev: ATA device to which the new command is attached |
846 | * @cmd: SCSI command that originated this ATA command | |
1da177e4 LT |
847 | * |
848 | * Obtain a reference to an unused ata_queued_cmd structure, | |
849 | * which is the basic libata structure representing a single | |
850 | * ATA command sent to the hardware. | |
851 | * | |
852 | * If a command was available, fill in the SCSI-specific | |
853 | * portions of the structure with information on the | |
854 | * current command. | |
855 | * | |
856 | * LOCKING: | |
cca3974e | 857 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
858 | * |
859 | * RETURNS: | |
860 | * Command allocated, or %NULL if none available. | |
861 | */ | |
7102d230 | 862 | static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev, |
b27dcfb0 | 863 | struct scsi_cmnd *cmd) |
1da177e4 LT |
864 | { |
865 | struct ata_queued_cmd *qc; | |
866 | ||
12cb5ce1 | 867 | qc = ata_qc_new_init(dev, cmd->request->tag); |
1da177e4 LT |
868 | if (qc) { |
869 | qc->scsicmd = cmd; | |
b27dcfb0 | 870 | qc->scsidone = cmd->scsi_done; |
1da177e4 | 871 | |
ff2aeb1e | 872 | qc->sg = scsi_sglist(cmd); |
7120165c | 873 | qc->n_elem = scsi_sg_count(cmd); |
1da177e4 LT |
874 | } else { |
875 | cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1); | |
b27dcfb0 | 876 | cmd->scsi_done(cmd); |
1da177e4 LT |
877 | } |
878 | ||
879 | return qc; | |
880 | } | |
881 | ||
aacda375 TH |
882 | static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc) |
883 | { | |
884 | struct scsi_cmnd *scmd = qc->scsicmd; | |
885 | ||
886 | qc->extrabytes = scmd->request->extra_len; | |
887 | qc->nbytes = scsi_bufflen(scmd) + qc->extrabytes; | |
888 | } | |
889 | ||
b095518e JG |
890 | /** |
891 | * ata_dump_status - user friendly display of error info | |
892 | * @id: id of the port in question | |
893 | * @tf: ptr to filled out taskfile | |
894 | * | |
895 | * Decode and dump the ATA error/status registers for the user so | |
896 | * that they have some idea what really happened at the non | |
897 | * make-believe layer. | |
898 | * | |
899 | * LOCKING: | |
900 | * inherited from caller | |
901 | */ | |
7102d230 | 902 | static void ata_dump_status(unsigned id, struct ata_taskfile *tf) |
b095518e JG |
903 | { |
904 | u8 stat = tf->command, err = tf->feature; | |
905 | ||
906 | printk(KERN_WARNING "ata%u: status=0x%02x { ", id, stat); | |
907 | if (stat & ATA_BUSY) { | |
908 | printk("Busy }\n"); /* Data is not valid in this case */ | |
909 | } else { | |
1308d7f0 HR |
910 | if (stat & ATA_DRDY) printk("DriveReady "); |
911 | if (stat & ATA_DF) printk("DeviceFault "); | |
912 | if (stat & ATA_DSC) printk("SeekComplete "); | |
913 | if (stat & ATA_DRQ) printk("DataRequest "); | |
914 | if (stat & ATA_CORR) printk("CorrectedError "); | |
915 | if (stat & ATA_SENSE) printk("Sense "); | |
916 | if (stat & ATA_ERR) printk("Error "); | |
b095518e JG |
917 | printk("}\n"); |
918 | ||
919 | if (err) { | |
920 | printk(KERN_WARNING "ata%u: error=0x%02x { ", id, err); | |
1308d7f0 HR |
921 | if (err & ATA_ABORTED) printk("DriveStatusError "); |
922 | if (err & ATA_ICRC) { | |
923 | if (err & ATA_ABORTED) | |
924 | printk("BadCRC "); | |
b095518e JG |
925 | else printk("Sector "); |
926 | } | |
1308d7f0 HR |
927 | if (err & ATA_UNC) printk("UncorrectableError "); |
928 | if (err & ATA_IDNF) printk("SectorIdNotFound "); | |
929 | if (err & ATA_TRK0NF) printk("TrackZeroNotFound "); | |
930 | if (err & ATA_AMNF) printk("AddrMarkNotFound "); | |
b095518e JG |
931 | printk("}\n"); |
932 | } | |
933 | } | |
934 | } | |
935 | ||
1da177e4 LT |
936 | /** |
937 | * ata_to_sense_error - convert ATA error to SCSI error | |
8e8b77dd | 938 | * @id: ATA device number |
1da177e4 | 939 | * @drv_stat: value contained in ATA status register |
b095518e JG |
940 | * @drv_err: value contained in ATA error register |
941 | * @sk: the sense key we'll fill out | |
942 | * @asc: the additional sense code we'll fill out | |
943 | * @ascq: the additional sense code qualifier we'll fill out | |
246619da | 944 | * @verbose: be verbose |
1da177e4 | 945 | * |
b095518e JG |
946 | * Converts an ATA error into a SCSI error. Fill out pointers to |
947 | * SK, ASC, and ASCQ bytes for later use in fixed or descriptor | |
948 | * format sense blocks. | |
1da177e4 LT |
949 | * |
950 | * LOCKING: | |
cca3974e | 951 | * spin_lock_irqsave(host lock) |
1da177e4 | 952 | */ |
7102d230 AB |
953 | static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, |
954 | u8 *asc, u8 *ascq, int verbose) | |
1da177e4 | 955 | { |
b095518e | 956 | int i; |
ffe75ef6 | 957 | |
1da177e4 | 958 | /* Based on the 3ware driver translation table */ |
98ac62de | 959 | static const unsigned char sense_table[][4] = { |
1da177e4 | 960 | /* BBD|ECC|ID|MAR */ |
8ae72044 HR |
961 | {0xd1, ABORTED_COMMAND, 0x00, 0x00}, |
962 | // Device busy Aborted command | |
1da177e4 | 963 | /* BBD|ECC|ID */ |
8ae72044 HR |
964 | {0xd0, ABORTED_COMMAND, 0x00, 0x00}, |
965 | // Device busy Aborted command | |
1da177e4 | 966 | /* ECC|MC|MARK */ |
8ae72044 HR |
967 | {0x61, HARDWARE_ERROR, 0x00, 0x00}, |
968 | // Device fault Hardware error | |
1da177e4 | 969 | /* ICRC|ABRT */ /* NB: ICRC & !ABRT is BBD */ |
8ae72044 HR |
970 | {0x84, ABORTED_COMMAND, 0x47, 0x00}, |
971 | // Data CRC error SCSI parity error | |
1da177e4 | 972 | /* MC|ID|ABRT|TRK0|MARK */ |
8ae72044 HR |
973 | {0x37, NOT_READY, 0x04, 0x00}, |
974 | // Unit offline Not ready | |
1da177e4 | 975 | /* MCR|MARK */ |
8ae72044 HR |
976 | {0x09, NOT_READY, 0x04, 0x00}, |
977 | // Unrecovered disk error Not ready | |
1da177e4 | 978 | /* Bad address mark */ |
8ae72044 HR |
979 | {0x01, MEDIUM_ERROR, 0x13, 0x00}, |
980 | // Address mark not found for data field | |
981 | /* TRK0 - Track 0 not found */ | |
982 | {0x02, HARDWARE_ERROR, 0x00, 0x00}, | |
983 | // Hardware error | |
78062c50 | 984 | /* Abort: 0x04 is not translated here, see below */ |
1da177e4 | 985 | /* Media change request */ |
8ae72044 HR |
986 | {0x08, NOT_READY, 0x04, 0x00}, |
987 | // FIXME: faking offline | |
988 | /* SRV/IDNF - ID not found */ | |
989 | {0x10, ILLEGAL_REQUEST, 0x21, 0x00}, | |
990 | // Logical address out of range | |
991 | /* MC - Media Changed */ | |
992 | {0x20, UNIT_ATTENTION, 0x28, 0x00}, | |
993 | // Not ready to ready change, medium may have changed | |
994 | /* ECC - Uncorrectable ECC error */ | |
995 | {0x40, MEDIUM_ERROR, 0x11, 0x04}, | |
996 | // Unrecovered read error | |
1da177e4 | 997 | /* BBD - block marked bad */ |
8ae72044 HR |
998 | {0x80, MEDIUM_ERROR, 0x11, 0x04}, |
999 | // Block marked bad Medium error, unrecovered read error | |
1da177e4 LT |
1000 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
1001 | }; | |
98ac62de | 1002 | static const unsigned char stat_table[][4] = { |
1da177e4 | 1003 | /* Must be first because BUSY means no other bits valid */ |
8ae72044 HR |
1004 | {0x80, ABORTED_COMMAND, 0x47, 0x00}, |
1005 | // Busy, fake parity for now | |
1006 | {0x40, ILLEGAL_REQUEST, 0x21, 0x04}, | |
1007 | // Device ready, unaligned write command | |
1008 | {0x20, HARDWARE_ERROR, 0x44, 0x00}, | |
1009 | // Device fault, internal target failure | |
1010 | {0x08, ABORTED_COMMAND, 0x47, 0x00}, | |
1011 | // Timed out in xfer, fake parity for now | |
1012 | {0x04, RECOVERED_ERROR, 0x11, 0x00}, | |
1013 | // Recovered ECC error Medium error, recovered | |
1da177e4 LT |
1014 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
1015 | }; | |
1da177e4 | 1016 | |
1da177e4 LT |
1017 | /* |
1018 | * Is this an error we can process/parse | |
1019 | */ | |
b095518e JG |
1020 | if (drv_stat & ATA_BUSY) { |
1021 | drv_err = 0; /* Ignore the err bits, they're invalid */ | |
1da177e4 | 1022 | } |
b095518e JG |
1023 | |
1024 | if (drv_err) { | |
1025 | /* Look for drv_err */ | |
1026 | for (i = 0; sense_table[i][0] != 0xFF; i++) { | |
1027 | /* Look for best matches first */ | |
2e9edbf8 | 1028 | if ((sense_table[i][0] & drv_err) == |
b095518e JG |
1029 | sense_table[i][0]) { |
1030 | *sk = sense_table[i][1]; | |
1031 | *asc = sense_table[i][2]; | |
1032 | *ascq = sense_table[i][3]; | |
1033 | goto translate_done; | |
1034 | } | |
1035 | } | |
1da177e4 | 1036 | } |
b095518e | 1037 | |
78062c50 GG |
1038 | /* |
1039 | * Fall back to interpreting status bits. Note that if the drv_err | |
1040 | * has only the ABRT bit set, we decode drv_stat. ABRT by itself | |
1041 | * is not descriptive enough. | |
1042 | */ | |
b095518e JG |
1043 | for (i = 0; stat_table[i][0] != 0xFF; i++) { |
1044 | if (stat_table[i][0] & drv_stat) { | |
1045 | *sk = stat_table[i][1]; | |
1046 | *asc = stat_table[i][2]; | |
1047 | *ascq = stat_table[i][3]; | |
1048 | goto translate_done; | |
1da177e4 | 1049 | } |
b095518e | 1050 | } |
b095518e | 1051 | |
78062c50 GG |
1052 | /* |
1053 | * We need a sensible error return here, which is tricky, and one | |
1054 | * that won't cause people to do things like return a disk wrongly. | |
1055 | */ | |
2d202024 AC |
1056 | *sk = ABORTED_COMMAND; |
1057 | *asc = 0x00; | |
1058 | *ascq = 0x00; | |
b095518e JG |
1059 | |
1060 | translate_done: | |
246619da TH |
1061 | if (verbose) |
1062 | printk(KERN_ERR "ata%u: translated ATA stat/err 0x%02x/%02x " | |
1063 | "to SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n", | |
1064 | id, drv_stat, drv_err, *sk, *asc, *ascq); | |
b095518e JG |
1065 | return; |
1066 | } | |
1067 | ||
1068 | /* | |
750426aa | 1069 | * ata_gen_passthru_sense - Generate check condition sense block. |
b095518e JG |
1070 | * @qc: Command that completed. |
1071 | * | |
1072 | * This function is specific to the ATA descriptor format sense | |
1073 | * block specified for the ATA pass through commands. Regardless | |
1074 | * of whether the command errored or not, return a sense | |
1075 | * block. Copy all controller registers into the sense | |
84a9a8cd GG |
1076 | * block. If there was no error, we get the request from an ATA |
1077 | * passthrough command, so we use the following sense data: | |
1078 | * sk = RECOVERED ERROR | |
1079 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE | |
1080 | * | |
b095518e JG |
1081 | * |
1082 | * LOCKING: | |
750426aa | 1083 | * None. |
b095518e | 1084 | */ |
750426aa | 1085 | static void ata_gen_passthru_sense(struct ata_queued_cmd *qc) |
b095518e JG |
1086 | { |
1087 | struct scsi_cmnd *cmd = qc->scsicmd; | |
e61e0672 | 1088 | struct ata_taskfile *tf = &qc->result_tf; |
b095518e JG |
1089 | unsigned char *sb = cmd->sense_buffer; |
1090 | unsigned char *desc = sb + 8; | |
246619da | 1091 | int verbose = qc->ap->ops->error_handler == NULL; |
b525e773 | 1092 | u8 sense_key, asc, ascq; |
b095518e JG |
1093 | |
1094 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); | |
1095 | ||
0e5dec47 | 1096 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
b095518e | 1097 | |
b095518e JG |
1098 | /* |
1099 | * Use ata_to_sense_error() to map status register bits | |
1100 | * onto sense key, asc & ascq. | |
1101 | */ | |
058e55e1 TH |
1102 | if (qc->err_mask || |
1103 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { | |
44877b4e | 1104 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, |
b525e773 | 1105 | &sense_key, &asc, &ascq, verbose); |
06dbde5f | 1106 | ata_scsi_set_sense(qc->dev, cmd, sense_key, asc, ascq); |
84a9a8cd | 1107 | } else { |
11093cb1 HR |
1108 | /* |
1109 | * ATA PASS-THROUGH INFORMATION AVAILABLE | |
1110 | * Always in descriptor format sense. | |
1111 | */ | |
1112 | scsi_build_sense_buffer(1, cmd->sense_buffer, | |
1113 | RECOVERED_ERROR, 0, 0x1D); | |
1da177e4 LT |
1114 | } |
1115 | ||
11093cb1 HR |
1116 | if ((cmd->sense_buffer[0] & 0x7f) >= 0x72) { |
1117 | u8 len; | |
1118 | ||
1119 | /* descriptor format */ | |
1120 | len = sb[7]; | |
1121 | desc = (char *)scsi_sense_desc_find(sb, len + 8, 9); | |
1122 | if (!desc) { | |
1123 | if (SCSI_SENSE_BUFFERSIZE < len + 14) | |
1124 | return; | |
1125 | sb[7] = len + 14; | |
1126 | desc = sb + 8 + len; | |
1127 | } | |
1128 | desc[0] = 9; | |
1129 | desc[1] = 12; | |
1130 | /* | |
1131 | * Copy registers into sense buffer. | |
1132 | */ | |
1133 | desc[2] = 0x00; | |
1134 | desc[3] = tf->feature; /* == error reg */ | |
1135 | desc[5] = tf->nsect; | |
1136 | desc[7] = tf->lbal; | |
1137 | desc[9] = tf->lbam; | |
1138 | desc[11] = tf->lbah; | |
1139 | desc[12] = tf->device; | |
1140 | desc[13] = tf->command; /* == status reg */ | |
b095518e | 1141 | |
11093cb1 HR |
1142 | /* |
1143 | * Fill in Extend bit, and the high order bytes | |
1144 | * if applicable. | |
1145 | */ | |
1146 | if (tf->flags & ATA_TFLAG_LBA48) { | |
1147 | desc[2] |= 0x01; | |
1148 | desc[4] = tf->hob_nsect; | |
1149 | desc[6] = tf->hob_lbal; | |
1150 | desc[8] = tf->hob_lbam; | |
1151 | desc[10] = tf->hob_lbah; | |
1152 | } | |
1153 | } else { | |
1154 | /* Fixed sense format */ | |
1155 | desc[0] = tf->feature; | |
1156 | desc[1] = tf->command; /* status */ | |
1157 | desc[2] = tf->device; | |
1158 | desc[3] = tf->nsect; | |
e0029dcb | 1159 | desc[7] = 0; |
11093cb1 HR |
1160 | if (tf->flags & ATA_TFLAG_LBA48) { |
1161 | desc[8] |= 0x80; | |
1162 | if (tf->hob_nsect) | |
1163 | desc[8] |= 0x40; | |
1164 | if (tf->hob_lbal || tf->hob_lbam || tf->hob_lbah) | |
1165 | desc[8] |= 0x20; | |
1166 | } | |
1167 | desc[9] = tf->lbal; | |
1168 | desc[10] = tf->lbam; | |
1169 | desc[11] = tf->lbah; | |
1da177e4 | 1170 | } |
b095518e | 1171 | } |
1da177e4 | 1172 | |
b095518e | 1173 | /** |
750426aa | 1174 | * ata_gen_ata_sense - generate a SCSI fixed sense block |
b095518e JG |
1175 | * @qc: Command that we are erroring out |
1176 | * | |
d25614ba | 1177 | * Generate sense block for a failed ATA command @qc. Descriptor |
25985edc | 1178 | * format is used to accommodate LBA48 block address. |
b095518e JG |
1179 | * |
1180 | * LOCKING: | |
750426aa | 1181 | * None. |
b095518e | 1182 | */ |
750426aa | 1183 | static void ata_gen_ata_sense(struct ata_queued_cmd *qc) |
b095518e | 1184 | { |
d25614ba | 1185 | struct ata_device *dev = qc->dev; |
b095518e | 1186 | struct scsi_cmnd *cmd = qc->scsicmd; |
e61e0672 | 1187 | struct ata_taskfile *tf = &qc->result_tf; |
b095518e | 1188 | unsigned char *sb = cmd->sense_buffer; |
246619da | 1189 | int verbose = qc->ap->ops->error_handler == NULL; |
d25614ba | 1190 | u64 block; |
b525e773 | 1191 | u8 sense_key, asc, ascq; |
b095518e JG |
1192 | |
1193 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); | |
1194 | ||
0e5dec47 | 1195 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
b095518e | 1196 | |
59f68474 HR |
1197 | if (ata_dev_disabled(dev)) { |
1198 | /* Device disabled after error recovery */ | |
1199 | /* LOGICAL UNIT NOT READY, HARD RESET REQUIRED */ | |
1200 | ata_scsi_set_sense(dev, cmd, NOT_READY, 0x04, 0x21); | |
1201 | return; | |
1202 | } | |
d25614ba | 1203 | /* Use ata_to_sense_error() to map status register bits |
b095518e JG |
1204 | * onto sense key, asc & ascq. |
1205 | */ | |
058e55e1 TH |
1206 | if (qc->err_mask || |
1207 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { | |
44877b4e | 1208 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, |
b525e773 | 1209 | &sense_key, &asc, &ascq, verbose); |
06dbde5f | 1210 | ata_scsi_set_sense(dev, cmd, sense_key, asc, ascq); |
5e6acd1c HR |
1211 | } else { |
1212 | /* Could not decode error */ | |
1213 | ata_dev_warn(dev, "could not decode error status 0x%x err_mask 0x%x\n", | |
1214 | tf->command, qc->err_mask); | |
06dbde5f | 1215 | ata_scsi_set_sense(dev, cmd, ABORTED_COMMAND, 0, 0); |
5e6acd1c | 1216 | return; |
1da177e4 | 1217 | } |
1da177e4 | 1218 | |
d25614ba | 1219 | block = ata_tf_read_block(&qc->result_tf, dev); |
cffd1ee9 HR |
1220 | if (block == U64_MAX) |
1221 | return; | |
a7dac447 | 1222 | |
cf8b49b0 | 1223 | scsi_set_sense_information(sb, SCSI_SENSE_BUFFERSIZE, block); |
1da177e4 LT |
1224 | } |
1225 | ||
a6cce2a7 BK |
1226 | static void ata_scsi_sdev_config(struct scsi_device *sdev) |
1227 | { | |
1228 | sdev->use_10_for_rw = 1; | |
1229 | sdev->use_10_for_ms = 1; | |
e185934f | 1230 | sdev->no_write_same = 1; |
31cc23b3 TH |
1231 | |
1232 | /* Schedule policy is determined by ->qc_defer() callback and | |
1233 | * it needs to see every deferred qc. Set dev_blocked to 1 to | |
1234 | * prevent SCSI midlayer from automatically deferring | |
1235 | * requests. | |
1236 | */ | |
1237 | sdev->max_device_blocked = 1; | |
a6cce2a7 BK |
1238 | } |
1239 | ||
fa2fc7f4 JB |
1240 | /** |
1241 | * atapi_drain_needed - Check whether data transfer may overflow | |
73fd8b6d | 1242 | * @rq: request to be checked |
fa2fc7f4 JB |
1243 | * |
1244 | * ATAPI commands which transfer variable length data to host | |
c9b5560a | 1245 | * might overflow due to application error or hardware bug. This |
fa2fc7f4 JB |
1246 | * function checks whether overflow should be drained and ignored |
1247 | * for @request. | |
1248 | * | |
1249 | * LOCKING: | |
1250 | * None. | |
1251 | * | |
1252 | * RETURNS: | |
1253 | * 1 if ; otherwise, 0. | |
1254 | */ | |
1255 | static int atapi_drain_needed(struct request *rq) | |
1256 | { | |
57292b58 | 1257 | if (likely(!blk_rq_is_passthrough(rq))) |
fa2fc7f4 JB |
1258 | return 0; |
1259 | ||
a8ebb056 | 1260 | if (!blk_rq_bytes(rq) || op_is_write(req_op(rq))) |
fa2fc7f4 JB |
1261 | return 0; |
1262 | ||
82ed4db4 | 1263 | return atapi_cmd_type(scsi_req(rq)->cmd[0]) == ATAPI_MISC; |
fa2fc7f4 JB |
1264 | } |
1265 | ||
1266 | static int ata_scsi_dev_config(struct scsi_device *sdev, | |
1267 | struct ata_device *dev) | |
a6cce2a7 | 1268 | { |
900e599e | 1269 | struct request_queue *q = sdev->request_queue; |
1270 | ||
45fabbb7 EO |
1271 | if (!ata_id_has_unload(dev->id)) |
1272 | dev->flags |= ATA_DFLAG_NO_UNLOAD; | |
1273 | ||
914ed354 | 1274 | /* configure max sectors */ |
900e599e | 1275 | blk_queue_max_hw_sectors(q, dev->max_sectors); |
a6cce2a7 | 1276 | |
fa2fc7f4 | 1277 | if (dev->class == ATA_DEV_ATAPI) { |
fa2fc7f4 JB |
1278 | void *buf; |
1279 | ||
729a6a30 TH |
1280 | sdev->sector_size = ATA_SECT_SIZE; |
1281 | ||
1282 | /* set DMA padding */ | |
900e599e | 1283 | blk_queue_update_dma_pad(q, ATA_DMA_PAD_SZ - 1); |
fa2fc7f4 JB |
1284 | |
1285 | /* configure draining */ | |
1286 | buf = kmalloc(ATAPI_MAX_DRAIN, q->bounce_gfp | GFP_KERNEL); | |
1287 | if (!buf) { | |
a9a79dfe | 1288 | ata_dev_err(dev, "drain buffer allocation failed\n"); |
fa2fc7f4 JB |
1289 | return -ENOMEM; |
1290 | } | |
1291 | ||
1292 | blk_queue_dma_drain(q, atapi_drain_needed, buf, ATAPI_MAX_DRAIN); | |
1293 | } else { | |
295124dc | 1294 | sdev->sector_size = ata_id_logical_sector_size(dev->id); |
d8cf5389 | 1295 | sdev->manage_start_stop = 1; |
dde20207 | 1296 | } |
d8cf5389 | 1297 | |
729a6a30 TH |
1298 | /* |
1299 | * ata_pio_sectors() expects buffer for each sector to not cross | |
1300 | * page boundary. Enforce it by requiring buffers to be sector | |
1301 | * aligned, which works iff sector_size is not larger than | |
1302 | * PAGE_SIZE. ATAPI devices also need the alignment as | |
1303 | * IDENTIFY_PACKET is executed as ATA_PROT_PIO. | |
1304 | */ | |
1305 | if (sdev->sector_size > PAGE_SIZE) | |
a9a79dfe | 1306 | ata_dev_warn(dev, |
729a6a30 TH |
1307 | "sector_size=%u > PAGE_SIZE, PIO may malfunction\n", |
1308 | sdev->sector_size); | |
1309 | ||
900e599e | 1310 | blk_queue_update_dma_alignment(q, sdev->sector_size - 1); |
729a6a30 | 1311 | |
f26792d5 JG |
1312 | if (dev->flags & ATA_DFLAG_AN) |
1313 | set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events); | |
1314 | ||
a6e6ce8e TH |
1315 | if (dev->flags & ATA_DFLAG_NCQ) { |
1316 | int depth; | |
1317 | ||
1318 | depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id)); | |
1319 | depth = min(ATA_MAX_QUEUE - 1, depth); | |
db5ed4df | 1320 | scsi_change_queue_depth(sdev, depth); |
a6e6ce8e | 1321 | } |
fa2fc7f4 | 1322 | |
900e599e | 1323 | blk_queue_flush_queueable(q, false); |
1324 | ||
295124dc | 1325 | dev->sdev = sdev; |
fa2fc7f4 | 1326 | return 0; |
a6cce2a7 BK |
1327 | } |
1328 | ||
1da177e4 LT |
1329 | /** |
1330 | * ata_scsi_slave_config - Set SCSI device attributes | |
1331 | * @sdev: SCSI device to examine | |
1332 | * | |
1333 | * This is called before we actually start reading | |
1334 | * and writing to the device, to configure certain | |
1335 | * SCSI mid-layer behaviors. | |
1336 | * | |
1337 | * LOCKING: | |
1338 | * Defined by SCSI layer. We don't really care. | |
1339 | */ | |
1340 | ||
1341 | int ata_scsi_slave_config(struct scsi_device *sdev) | |
1342 | { | |
31534363 TH |
1343 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
1344 | struct ata_device *dev = __ata_scsi_find_dev(ap, sdev); | |
fa2fc7f4 | 1345 | int rc = 0; |
31534363 | 1346 | |
a6cce2a7 | 1347 | ata_scsi_sdev_config(sdev); |
1da177e4 | 1348 | |
31534363 | 1349 | if (dev) |
fa2fc7f4 | 1350 | rc = ata_scsi_dev_config(sdev, dev); |
1da177e4 | 1351 | |
fa2fc7f4 | 1352 | return rc; |
1da177e4 LT |
1353 | } |
1354 | ||
83c47bcb TH |
1355 | /** |
1356 | * ata_scsi_slave_destroy - SCSI device is about to be destroyed | |
1357 | * @sdev: SCSI device to be destroyed | |
1358 | * | |
1359 | * @sdev is about to be destroyed for hot/warm unplugging. If | |
1360 | * this unplugging was initiated by libata as indicated by NULL | |
1361 | * dev->sdev, this function doesn't have to do anything. | |
1362 | * Otherwise, SCSI layer initiated warm-unplug is in progress. | |
1363 | * Clear dev->sdev, schedule the device for ATA detach and invoke | |
1364 | * EH. | |
1365 | * | |
1366 | * LOCKING: | |
1367 | * Defined by SCSI layer. We don't really care. | |
1368 | */ | |
1369 | void ata_scsi_slave_destroy(struct scsi_device *sdev) | |
1370 | { | |
1371 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
fa2fc7f4 | 1372 | struct request_queue *q = sdev->request_queue; |
83c47bcb TH |
1373 | unsigned long flags; |
1374 | struct ata_device *dev; | |
1375 | ||
1376 | if (!ap->ops->error_handler) | |
1377 | return; | |
1378 | ||
ba6a1308 | 1379 | spin_lock_irqsave(ap->lock, flags); |
83c47bcb TH |
1380 | dev = __ata_scsi_find_dev(ap, sdev); |
1381 | if (dev && dev->sdev) { | |
1382 | /* SCSI device already in CANCEL state, no need to offline it */ | |
1383 | dev->sdev = NULL; | |
1384 | dev->flags |= ATA_DFLAG_DETACH; | |
1385 | ata_port_schedule_eh(ap); | |
1386 | } | |
ba6a1308 | 1387 | spin_unlock_irqrestore(ap->lock, flags); |
fa2fc7f4 JB |
1388 | |
1389 | kfree(q->dma_drain_buffer); | |
1390 | q->dma_drain_buffer = NULL; | |
1391 | q->dma_drain_size = 0; | |
83c47bcb TH |
1392 | } |
1393 | ||
a6e6ce8e | 1394 | /** |
f6e67035 | 1395 | * __ata_change_queue_depth - helper for ata_scsi_change_queue_depth |
6d2dd054 MPS |
1396 | * @ap: ATA port to which the device change the queue depth |
1397 | * @sdev: SCSI device to configure queue depth for | |
1398 | * @queue_depth: new queue depth | |
a6e6ce8e | 1399 | * |
f6e67035 DW |
1400 | * libsas and libata have different approaches for associating a sdev to |
1401 | * its ata_port. | |
a6e6ce8e | 1402 | * |
a6e6ce8e | 1403 | */ |
f6e67035 | 1404 | int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, |
db5ed4df | 1405 | int queue_depth) |
a6e6ce8e | 1406 | { |
a6e6ce8e | 1407 | struct ata_device *dev; |
360f654e | 1408 | unsigned long flags; |
a6e6ce8e | 1409 | |
c3c70c44 | 1410 | if (queue_depth < 1 || queue_depth == sdev->queue_depth) |
a6e6ce8e TH |
1411 | return sdev->queue_depth; |
1412 | ||
1413 | dev = ata_scsi_find_dev(ap, sdev); | |
1414 | if (!dev || !ata_dev_enabled(dev)) | |
1415 | return sdev->queue_depth; | |
1416 | ||
c3c70c44 | 1417 | /* NCQ enabled? */ |
360f654e | 1418 | spin_lock_irqsave(ap->lock, flags); |
c3c70c44 TH |
1419 | dev->flags &= ~ATA_DFLAG_NCQ_OFF; |
1420 | if (queue_depth == 1 || !ata_ncq_enabled(dev)) { | |
360f654e | 1421 | dev->flags |= ATA_DFLAG_NCQ_OFF; |
c3c70c44 TH |
1422 | queue_depth = 1; |
1423 | } | |
360f654e TH |
1424 | spin_unlock_irqrestore(ap->lock, flags); |
1425 | ||
c3c70c44 TH |
1426 | /* limit and apply queue depth */ |
1427 | queue_depth = min(queue_depth, sdev->host->can_queue); | |
1428 | queue_depth = min(queue_depth, ata_id_queue_depth(dev->id)); | |
1429 | queue_depth = min(queue_depth, ATA_MAX_QUEUE - 1); | |
1430 | ||
1431 | if (sdev->queue_depth == queue_depth) | |
1432 | return -EINVAL; | |
1433 | ||
db5ed4df | 1434 | return scsi_change_queue_depth(sdev, queue_depth); |
a6e6ce8e TH |
1435 | } |
1436 | ||
f6e67035 DW |
1437 | /** |
1438 | * ata_scsi_change_queue_depth - SCSI callback for queue depth config | |
1439 | * @sdev: SCSI device to configure queue depth for | |
1440 | * @queue_depth: new queue depth | |
f6e67035 DW |
1441 | * |
1442 | * This is libata standard hostt->change_queue_depth callback. | |
1443 | * SCSI will call into this callback when user tries to set queue | |
1444 | * depth via sysfs. | |
1445 | * | |
1446 | * LOCKING: | |
1447 | * SCSI layer (we don't care) | |
1448 | * | |
1449 | * RETURNS: | |
1450 | * Newly configured queue depth. | |
1451 | */ | |
db5ed4df | 1452 | int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth) |
f6e67035 DW |
1453 | { |
1454 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
1455 | ||
db5ed4df | 1456 | return __ata_change_queue_depth(ap, sdev, queue_depth); |
f6e67035 DW |
1457 | } |
1458 | ||
972dcafb DG |
1459 | /** |
1460 | * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command | |
1461 | * @qc: Storage for translated ATA taskfile | |
972dcafb DG |
1462 | * |
1463 | * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY | |
1464 | * (to start). Perhaps these commands should be preceded by | |
1465 | * CHECK POWER MODE to see what power mode the device is already in. | |
1466 | * [See SAT revision 5 at www.t10.org] | |
1467 | * | |
1468 | * LOCKING: | |
cca3974e | 1469 | * spin_lock_irqsave(host lock) |
972dcafb DG |
1470 | * |
1471 | * RETURNS: | |
1472 | * Zero on success, non-zero on error. | |
1473 | */ | |
ad706991 | 1474 | static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc) |
972dcafb | 1475 | { |
542b1444 | 1476 | struct scsi_cmnd *scmd = qc->scsicmd; |
972dcafb | 1477 | struct ata_taskfile *tf = &qc->tf; |
ad706991 | 1478 | const u8 *cdb = scmd->cmnd; |
bcfc867d | 1479 | u16 fp; |
0df10b84 | 1480 | u8 bp = 0xff; |
972dcafb | 1481 | |
bcfc867d HR |
1482 | if (scmd->cmd_len < 5) { |
1483 | fp = 4; | |
2e5704f6 | 1484 | goto invalid_fld; |
bcfc867d | 1485 | } |
2e5704f6 | 1486 | |
972dcafb DG |
1487 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
1488 | tf->protocol = ATA_PROT_NODATA; | |
542b1444 | 1489 | if (cdb[1] & 0x1) { |
972dcafb DG |
1490 | ; /* ignore IMMED bit, violates sat-r05 */ |
1491 | } | |
bcfc867d HR |
1492 | if (cdb[4] & 0x2) { |
1493 | fp = 4; | |
0df10b84 | 1494 | bp = 1; |
ae006510 | 1495 | goto invalid_fld; /* LOEJ bit set not supported */ |
bcfc867d HR |
1496 | } |
1497 | if (((cdb[4] >> 4) & 0xf) != 0) { | |
1498 | fp = 4; | |
0df10b84 | 1499 | bp = 3; |
ae006510 | 1500 | goto invalid_fld; /* power conditions not supported */ |
bcfc867d | 1501 | } |
e31e8531 | 1502 | |
542b1444 | 1503 | if (cdb[4] & 0x1) { |
972dcafb | 1504 | tf->nsect = 1; /* 1 sector, lba=0 */ |
9d5b1302 AL |
1505 | |
1506 | if (qc->dev->flags & ATA_DFLAG_LBA) { | |
c44078c0 | 1507 | tf->flags |= ATA_TFLAG_LBA; |
9d5b1302 AL |
1508 | |
1509 | tf->lbah = 0x0; | |
1510 | tf->lbam = 0x0; | |
1511 | tf->lbal = 0x0; | |
1512 | tf->device |= ATA_LBA; | |
1513 | } else { | |
1514 | /* CHS */ | |
1515 | tf->lbal = 0x1; /* sect */ | |
1516 | tf->lbam = 0x0; /* cyl low */ | |
1517 | tf->lbah = 0x0; /* cyl high */ | |
1518 | } | |
1519 | ||
972dcafb | 1520 | tf->command = ATA_CMD_VERIFY; /* READ VERIFY */ |
920a4b10 | 1521 | } else { |
2a6e58d2 RW |
1522 | /* Some odd clown BIOSen issue spindown on power off (ACPI S4 |
1523 | * or S5) causing some drives to spin up and down again. | |
1524 | */ | |
1525 | if ((qc->ap->flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) && | |
1526 | system_state == SYSTEM_POWER_OFF) | |
1527 | goto skip; | |
1528 | ||
1529 | if ((qc->ap->flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) && | |
1530 | system_entering_hibernation()) | |
1531 | goto skip; | |
1532 | ||
78981a7c RH |
1533 | /* Issue ATA STANDBY IMMEDIATE command */ |
1534 | tf->command = ATA_CMD_STANDBYNOW1; | |
920a4b10 | 1535 | } |
78981a7c | 1536 | |
972dcafb DG |
1537 | /* |
1538 | * Standby and Idle condition timers could be implemented but that | |
1539 | * would require libata to implement the Power condition mode page | |
1540 | * and allow the user to change it. Changing mode pages requires | |
1541 | * MODE SELECT to be implemented. | |
1542 | */ | |
1543 | ||
1544 | return 0; | |
ae006510 | 1545 | |
2a6e58d2 | 1546 | invalid_fld: |
0df10b84 | 1547 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); |
ae006510 | 1548 | return 1; |
2a6e58d2 RW |
1549 | skip: |
1550 | scmd->result = SAM_STAT_GOOD; | |
1551 | return 1; | |
972dcafb DG |
1552 | } |
1553 | ||
1554 | ||
1da177e4 LT |
1555 | /** |
1556 | * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command | |
1557 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1558 | * |
1559 | * Sets up an ATA taskfile to issue FLUSH CACHE or | |
1560 | * FLUSH CACHE EXT. | |
1561 | * | |
1562 | * LOCKING: | |
cca3974e | 1563 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1564 | * |
1565 | * RETURNS: | |
1566 | * Zero on success, non-zero on error. | |
1567 | */ | |
ad706991 | 1568 | static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc) |
1da177e4 LT |
1569 | { |
1570 | struct ata_taskfile *tf = &qc->tf; | |
1571 | ||
1572 | tf->flags |= ATA_TFLAG_DEVICE; | |
1573 | tf->protocol = ATA_PROT_NODATA; | |
1574 | ||
6fc49adb | 1575 | if (qc->dev->flags & ATA_DFLAG_FLUSH_EXT) |
1da177e4 LT |
1576 | tf->command = ATA_CMD_FLUSH_EXT; |
1577 | else | |
1578 | tf->command = ATA_CMD_FLUSH; | |
1579 | ||
b666da35 TH |
1580 | /* flush is critical for IO integrity, consider it an IO command */ |
1581 | qc->flags |= ATA_QCFLAG_IO; | |
1582 | ||
1da177e4 LT |
1583 | return 0; |
1584 | } | |
1585 | ||
3aef5231 AL |
1586 | /** |
1587 | * scsi_6_lba_len - Get LBA and transfer length | |
542b1444 | 1588 | * @cdb: SCSI command to translate |
3aef5231 AL |
1589 | * |
1590 | * Calculate LBA and transfer length for 6-byte commands. | |
1591 | * | |
1592 | * RETURNS: | |
1593 | * @plba: the LBA | |
1594 | * @plen: the transfer length | |
1595 | */ | |
542b1444 | 1596 | static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 AL |
1597 | { |
1598 | u64 lba = 0; | |
6c7b7d2b | 1599 | u32 len; |
3aef5231 AL |
1600 | |
1601 | VPRINTK("six-byte command\n"); | |
1602 | ||
6c7b7d2b | 1603 | lba |= ((u64)(cdb[1] & 0x1f)) << 16; |
542b1444 TH |
1604 | lba |= ((u64)cdb[2]) << 8; |
1605 | lba |= ((u64)cdb[3]); | |
3aef5231 | 1606 | |
6c7b7d2b | 1607 | len = cdb[4]; |
3aef5231 AL |
1608 | |
1609 | *plba = lba; | |
1610 | *plen = len; | |
1611 | } | |
1612 | ||
1613 | /** | |
1614 | * scsi_10_lba_len - Get LBA and transfer length | |
542b1444 | 1615 | * @cdb: SCSI command to translate |
3aef5231 AL |
1616 | * |
1617 | * Calculate LBA and transfer length for 10-byte commands. | |
1618 | * | |
1619 | * RETURNS: | |
1620 | * @plba: the LBA | |
1621 | * @plen: the transfer length | |
1622 | */ | |
542b1444 | 1623 | static void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 AL |
1624 | { |
1625 | u64 lba = 0; | |
1626 | u32 len = 0; | |
1627 | ||
1628 | VPRINTK("ten-byte command\n"); | |
1629 | ||
542b1444 TH |
1630 | lba |= ((u64)cdb[2]) << 24; |
1631 | lba |= ((u64)cdb[3]) << 16; | |
1632 | lba |= ((u64)cdb[4]) << 8; | |
1633 | lba |= ((u64)cdb[5]); | |
3aef5231 | 1634 | |
542b1444 TH |
1635 | len |= ((u32)cdb[7]) << 8; |
1636 | len |= ((u32)cdb[8]); | |
3aef5231 AL |
1637 | |
1638 | *plba = lba; | |
1639 | *plen = len; | |
1640 | } | |
1641 | ||
1642 | /** | |
1643 | * scsi_16_lba_len - Get LBA and transfer length | |
542b1444 | 1644 | * @cdb: SCSI command to translate |
3aef5231 AL |
1645 | * |
1646 | * Calculate LBA and transfer length for 16-byte commands. | |
1647 | * | |
1648 | * RETURNS: | |
1649 | * @plba: the LBA | |
1650 | * @plen: the transfer length | |
1651 | */ | |
542b1444 | 1652 | static void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 AL |
1653 | { |
1654 | u64 lba = 0; | |
1655 | u32 len = 0; | |
1656 | ||
1657 | VPRINTK("sixteen-byte command\n"); | |
1658 | ||
542b1444 TH |
1659 | lba |= ((u64)cdb[2]) << 56; |
1660 | lba |= ((u64)cdb[3]) << 48; | |
1661 | lba |= ((u64)cdb[4]) << 40; | |
1662 | lba |= ((u64)cdb[5]) << 32; | |
1663 | lba |= ((u64)cdb[6]) << 24; | |
1664 | lba |= ((u64)cdb[7]) << 16; | |
1665 | lba |= ((u64)cdb[8]) << 8; | |
1666 | lba |= ((u64)cdb[9]); | |
3aef5231 | 1667 | |
542b1444 TH |
1668 | len |= ((u32)cdb[10]) << 24; |
1669 | len |= ((u32)cdb[11]) << 16; | |
1670 | len |= ((u32)cdb[12]) << 8; | |
1671 | len |= ((u32)cdb[13]); | |
3aef5231 AL |
1672 | |
1673 | *plba = lba; | |
1674 | *plen = len; | |
1675 | } | |
1676 | ||
1da177e4 LT |
1677 | /** |
1678 | * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one | |
1679 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1680 | * |
1681 | * Converts SCSI VERIFY command to an ATA READ VERIFY command. | |
1682 | * | |
1683 | * LOCKING: | |
cca3974e | 1684 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1685 | * |
1686 | * RETURNS: | |
1687 | * Zero on success, non-zero on error. | |
1688 | */ | |
ad706991 | 1689 | static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 1690 | { |
542b1444 | 1691 | struct scsi_cmnd *scmd = qc->scsicmd; |
1da177e4 | 1692 | struct ata_taskfile *tf = &qc->tf; |
8bf62ece | 1693 | struct ata_device *dev = qc->dev; |
1da177e4 | 1694 | u64 dev_sectors = qc->dev->n_sectors; |
ad706991 | 1695 | const u8 *cdb = scmd->cmnd; |
3aef5231 AL |
1696 | u64 block; |
1697 | u32 n_block; | |
bcfc867d | 1698 | u16 fp; |
1da177e4 LT |
1699 | |
1700 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
1701 | tf->protocol = ATA_PROT_NODATA; | |
1da177e4 | 1702 | |
2e5704f6 | 1703 | if (cdb[0] == VERIFY) { |
bcfc867d HR |
1704 | if (scmd->cmd_len < 10) { |
1705 | fp = 9; | |
2e5704f6 | 1706 | goto invalid_fld; |
bcfc867d | 1707 | } |
542b1444 | 1708 | scsi_10_lba_len(cdb, &block, &n_block); |
2e5704f6 | 1709 | } else if (cdb[0] == VERIFY_16) { |
bcfc867d HR |
1710 | if (scmd->cmd_len < 16) { |
1711 | fp = 15; | |
2e5704f6 | 1712 | goto invalid_fld; |
bcfc867d | 1713 | } |
542b1444 | 1714 | scsi_16_lba_len(cdb, &block, &n_block); |
bcfc867d HR |
1715 | } else { |
1716 | fp = 0; | |
ae006510 | 1717 | goto invalid_fld; |
bcfc867d | 1718 | } |
1da177e4 | 1719 | |
8bf62ece | 1720 | if (!n_block) |
ae006510 | 1721 | goto nothing_to_do; |
8bf62ece | 1722 | if (block >= dev_sectors) |
ae006510 | 1723 | goto out_of_range; |
8bf62ece | 1724 | if ((block + n_block) > dev_sectors) |
ae006510 | 1725 | goto out_of_range; |
1da177e4 | 1726 | |
07506697 AL |
1727 | if (dev->flags & ATA_DFLAG_LBA) { |
1728 | tf->flags |= ATA_TFLAG_LBA; | |
1729 | ||
c6a33e24 AL |
1730 | if (lba_28_ok(block, n_block)) { |
1731 | /* use LBA28 */ | |
1732 | tf->command = ATA_CMD_VERIFY; | |
1733 | tf->device |= (block >> 24) & 0xf; | |
1734 | } else if (lba_48_ok(block, n_block)) { | |
1735 | if (!(dev->flags & ATA_DFLAG_LBA48)) | |
1736 | goto out_of_range; | |
07506697 AL |
1737 | |
1738 | /* use LBA48 */ | |
1739 | tf->flags |= ATA_TFLAG_LBA48; | |
8bf62ece | 1740 | tf->command = ATA_CMD_VERIFY_EXT; |
1da177e4 | 1741 | |
8bf62ece | 1742 | tf->hob_nsect = (n_block >> 8) & 0xff; |
1da177e4 | 1743 | |
8bf62ece AL |
1744 | tf->hob_lbah = (block >> 40) & 0xff; |
1745 | tf->hob_lbam = (block >> 32) & 0xff; | |
1746 | tf->hob_lbal = (block >> 24) & 0xff; | |
c6a33e24 AL |
1747 | } else |
1748 | /* request too large even for LBA48 */ | |
1749 | goto out_of_range; | |
8bf62ece AL |
1750 | |
1751 | tf->nsect = n_block & 0xff; | |
1da177e4 | 1752 | |
8bf62ece AL |
1753 | tf->lbah = (block >> 16) & 0xff; |
1754 | tf->lbam = (block >> 8) & 0xff; | |
1755 | tf->lbal = block & 0xff; | |
1da177e4 | 1756 | |
8bf62ece AL |
1757 | tf->device |= ATA_LBA; |
1758 | } else { | |
1759 | /* CHS */ | |
1760 | u32 sect, head, cyl, track; | |
1761 | ||
c6a33e24 AL |
1762 | if (!lba_28_ok(block, n_block)) |
1763 | goto out_of_range; | |
07506697 | 1764 | |
8bf62ece AL |
1765 | /* Convert LBA to CHS */ |
1766 | track = (u32)block / dev->sectors; | |
1767 | cyl = track / dev->heads; | |
1768 | head = track % dev->heads; | |
1769 | sect = (u32)block % dev->sectors + 1; | |
1770 | ||
c187c4b5 AL |
1771 | DPRINTK("block %u track %u cyl %u head %u sect %u\n", |
1772 | (u32)block, track, cyl, head, sect); | |
2e9edbf8 JG |
1773 | |
1774 | /* Check whether the converted CHS can fit. | |
1775 | Cylinder: 0-65535 | |
8bf62ece AL |
1776 | Head: 0-15 |
1777 | Sector: 1-255*/ | |
2e9edbf8 | 1778 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
ae006510 | 1779 | goto out_of_range; |
2e9edbf8 | 1780 | |
8bf62ece AL |
1781 | tf->command = ATA_CMD_VERIFY; |
1782 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ | |
1783 | tf->lbal = sect; | |
1784 | tf->lbam = cyl; | |
1785 | tf->lbah = cyl >> 8; | |
1786 | tf->device |= head; | |
1787 | } | |
1da177e4 LT |
1788 | |
1789 | return 0; | |
ae006510 DG |
1790 | |
1791 | invalid_fld: | |
0df10b84 | 1792 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
ae006510 DG |
1793 | return 1; |
1794 | ||
1795 | out_of_range: | |
06dbde5f | 1796 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
ae006510 DG |
1797 | /* "Logical Block Address out of range" */ |
1798 | return 1; | |
1799 | ||
1800 | nothing_to_do: | |
542b1444 | 1801 | scmd->result = SAM_STAT_GOOD; |
ae006510 | 1802 | return 1; |
1da177e4 LT |
1803 | } |
1804 | ||
1805 | /** | |
1806 | * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one | |
1807 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1808 | * |
1809 | * Converts any of six SCSI read/write commands into the | |
1810 | * ATA counterpart, including starting sector (LBA), | |
1811 | * sector count, and taking into account the device's LBA48 | |
1812 | * support. | |
1813 | * | |
1814 | * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and | |
1815 | * %WRITE_16 are currently supported. | |
1816 | * | |
1817 | * LOCKING: | |
cca3974e | 1818 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1819 | * |
1820 | * RETURNS: | |
1821 | * Zero on success, non-zero on error. | |
1822 | */ | |
ad706991 | 1823 | static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 1824 | { |
542b1444 | 1825 | struct scsi_cmnd *scmd = qc->scsicmd; |
ad706991 | 1826 | const u8 *cdb = scmd->cmnd; |
8e061784 AM |
1827 | struct request *rq = scmd->request; |
1828 | int class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq)); | |
bd056d7e | 1829 | unsigned int tf_flags = 0; |
3aef5231 AL |
1830 | u64 block; |
1831 | u32 n_block; | |
bd056d7e | 1832 | int rc; |
bcfc867d | 1833 | u16 fp = 0; |
1da177e4 | 1834 | |
542b1444 | 1835 | if (cdb[0] == WRITE_10 || cdb[0] == WRITE_6 || cdb[0] == WRITE_16) |
bd056d7e | 1836 | tf_flags |= ATA_TFLAG_WRITE; |
1da177e4 | 1837 | |
9a3dccc4 | 1838 | /* Calculate the SCSI LBA, transfer length and FUA. */ |
542b1444 | 1839 | switch (cdb[0]) { |
3aef5231 AL |
1840 | case READ_10: |
1841 | case WRITE_10: | |
bcfc867d HR |
1842 | if (unlikely(scmd->cmd_len < 10)) { |
1843 | fp = 9; | |
2e5704f6 | 1844 | goto invalid_fld; |
bcfc867d | 1845 | } |
542b1444 | 1846 | scsi_10_lba_len(cdb, &block, &n_block); |
3e451a49 | 1847 | if (cdb[1] & (1 << 3)) |
bd056d7e | 1848 | tf_flags |= ATA_TFLAG_FUA; |
3aef5231 AL |
1849 | break; |
1850 | case READ_6: | |
1851 | case WRITE_6: | |
bcfc867d HR |
1852 | if (unlikely(scmd->cmd_len < 6)) { |
1853 | fp = 5; | |
2e5704f6 | 1854 | goto invalid_fld; |
bcfc867d | 1855 | } |
542b1444 | 1856 | scsi_6_lba_len(cdb, &block, &n_block); |
c187c4b5 AL |
1857 | |
1858 | /* for 6-byte r/w commands, transfer length 0 | |
1859 | * means 256 blocks of data, not 0 block. | |
1860 | */ | |
76b2bf9b JG |
1861 | if (!n_block) |
1862 | n_block = 256; | |
3aef5231 AL |
1863 | break; |
1864 | case READ_16: | |
1865 | case WRITE_16: | |
bcfc867d HR |
1866 | if (unlikely(scmd->cmd_len < 16)) { |
1867 | fp = 15; | |
2e5704f6 | 1868 | goto invalid_fld; |
bcfc867d | 1869 | } |
542b1444 | 1870 | scsi_16_lba_len(cdb, &block, &n_block); |
3e451a49 | 1871 | if (cdb[1] & (1 << 3)) |
bd056d7e | 1872 | tf_flags |= ATA_TFLAG_FUA; |
3aef5231 AL |
1873 | break; |
1874 | default: | |
8bf62ece | 1875 | DPRINTK("no-byte command\n"); |
bcfc867d | 1876 | fp = 0; |
ae006510 | 1877 | goto invalid_fld; |
1da177e4 LT |
1878 | } |
1879 | ||
8bf62ece AL |
1880 | /* Check and compose ATA command */ |
1881 | if (!n_block) | |
c187c4b5 AL |
1882 | /* For 10-byte and 16-byte SCSI R/W commands, transfer |
1883 | * length 0 means transfer 0 block of data. | |
1884 | * However, for ATA R/W commands, sector count 0 means | |
1885 | * 256 or 65536 sectors, not 0 sectors as in SCSI. | |
f51750d5 AC |
1886 | * |
1887 | * WARNING: one or two older ATA drives treat 0 as 0... | |
c187c4b5 | 1888 | */ |
ae006510 | 1889 | goto nothing_to_do; |
1da177e4 | 1890 | |
bd056d7e | 1891 | qc->flags |= ATA_QCFLAG_IO; |
295124dc | 1892 | qc->nbytes = n_block * scmd->device->sector_size; |
1da177e4 | 1893 | |
bd056d7e | 1894 | rc = ata_build_rw_tf(&qc->tf, qc->dev, block, n_block, tf_flags, |
8e061784 AM |
1895 | qc->tag, class); |
1896 | ||
bd056d7e TH |
1897 | if (likely(rc == 0)) |
1898 | return 0; | |
ae006510 | 1899 | |
bd056d7e TH |
1900 | if (rc == -ERANGE) |
1901 | goto out_of_range; | |
1902 | /* treat all other errors as -EINVAL, fall through */ | |
ae006510 | 1903 | invalid_fld: |
0df10b84 | 1904 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
ae006510 DG |
1905 | return 1; |
1906 | ||
1907 | out_of_range: | |
06dbde5f | 1908 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
ae006510 DG |
1909 | /* "Logical Block Address out of range" */ |
1910 | return 1; | |
1911 | ||
1912 | nothing_to_do: | |
542b1444 | 1913 | scmd->result = SAM_STAT_GOOD; |
ae006510 | 1914 | return 1; |
1da177e4 LT |
1915 | } |
1916 | ||
2aa8f5d6 CH |
1917 | static void ata_qc_done(struct ata_queued_cmd *qc) |
1918 | { | |
1919 | struct scsi_cmnd *cmd = qc->scsicmd; | |
1920 | void (*done)(struct scsi_cmnd *) = qc->scsidone; | |
1921 | ||
1922 | ata_qc_free(qc); | |
1923 | done(cmd); | |
1924 | } | |
1925 | ||
77853bf2 | 1926 | static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) |
1da177e4 | 1927 | { |
c31f571d | 1928 | struct ata_port *ap = qc->ap; |
1da177e4 | 1929 | struct scsi_cmnd *cmd = qc->scsicmd; |
a7dac447 | 1930 | u8 *cdb = cmd->cmnd; |
2dcb407e | 1931 | int need_sense = (qc->err_mask != 0); |
b095518e JG |
1932 | |
1933 | /* For ATA pass thru (SAT) commands, generate a sense block if | |
1934 | * user mandated it or if there's an error. Note that if we | |
84a9a8cd GG |
1935 | * generate because the user forced us to [CK_COND =1], a check |
1936 | * condition is generated and the ATA register values are returned | |
b095518e | 1937 | * whether the command completed successfully or not. If there |
84a9a8cd GG |
1938 | * was no error, we use the following sense data: |
1939 | * sk = RECOVERED ERROR | |
1940 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE | |
b095518e | 1941 | */ |
a7dac447 | 1942 | if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) && |
25c7ce7f | 1943 | ((cdb[2] & 0x20) || need_sense)) |
750426aa | 1944 | ata_gen_passthru_sense(qc); |
5b01e4b9 HR |
1945 | else if (qc->flags & ATA_QCFLAG_SENSE_VALID) |
1946 | cmd->result = SAM_STAT_CHECK_CONDITION; | |
25c7ce7f CH |
1947 | else if (need_sense) |
1948 | ata_gen_ata_sense(qc); | |
1949 | else | |
1950 | cmd->result = SAM_STAT_GOOD; | |
1da177e4 | 1951 | |
c31f571d | 1952 | if (need_sense && !ap->ops->error_handler) |
44877b4e | 1953 | ata_dump_status(ap->print_id, &qc->result_tf); |
1da177e4 | 1954 | |
2aa8f5d6 | 1955 | ata_qc_done(qc); |
1da177e4 LT |
1956 | } |
1957 | ||
1958 | /** | |
1959 | * ata_scsi_translate - Translate then issue SCSI command to ATA device | |
1da177e4 LT |
1960 | * @dev: ATA device to which the command is addressed |
1961 | * @cmd: SCSI command to execute | |
1da177e4 LT |
1962 | * @xlat_func: Actor which translates @cmd to an ATA taskfile |
1963 | * | |
1964 | * Our ->queuecommand() function has decided that the SCSI | |
1965 | * command issued can be directly translated into an ATA | |
1966 | * command, rather than handled internally. | |
1967 | * | |
1968 | * This function sets up an ata_queued_cmd structure for the | |
1969 | * SCSI command, and sends that ata_queued_cmd to the hardware. | |
1970 | * | |
ae006510 DG |
1971 | * The xlat_func argument (actor) returns 0 if ready to execute |
1972 | * ATA command, else 1 to finish translation. If 1 is returned | |
1973 | * then cmd->result (and possibly cmd->sense_buffer) are assumed | |
1974 | * to be set reflecting an error condition or clean (early) | |
1975 | * termination. | |
1976 | * | |
1da177e4 | 1977 | * LOCKING: |
cca3974e | 1978 | * spin_lock_irqsave(host lock) |
2115ea94 TH |
1979 | * |
1980 | * RETURNS: | |
1981 | * 0 on success, SCSI_ML_QUEUE_DEVICE_BUSY if the command | |
1982 | * needs to be deferred. | |
1da177e4 | 1983 | */ |
2115ea94 | 1984 | static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd, |
2115ea94 | 1985 | ata_xlat_func_t xlat_func) |
1da177e4 | 1986 | { |
31cc23b3 | 1987 | struct ata_port *ap = dev->link->ap; |
1da177e4 | 1988 | struct ata_queued_cmd *qc; |
31cc23b3 | 1989 | int rc; |
1da177e4 LT |
1990 | |
1991 | VPRINTK("ENTER\n"); | |
1992 | ||
b27dcfb0 | 1993 | qc = ata_scsi_qc_new(dev, cmd); |
1da177e4 | 1994 | if (!qc) |
ae006510 | 1995 | goto err_mem; |
1da177e4 LT |
1996 | |
1997 | /* data is present; dma-map it */ | |
be7db055 CH |
1998 | if (cmd->sc_data_direction == DMA_FROM_DEVICE || |
1999 | cmd->sc_data_direction == DMA_TO_DEVICE) { | |
7120165c | 2000 | if (unlikely(scsi_bufflen(cmd) < 1)) { |
a9a79dfe | 2001 | ata_dev_warn(dev, "WARNING: zero len r/w req\n"); |
ae006510 | 2002 | goto err_did; |
1da177e4 LT |
2003 | } |
2004 | ||
7120165c | 2005 | ata_sg_init(qc, scsi_sglist(cmd), scsi_sg_count(cmd)); |
1da177e4 LT |
2006 | |
2007 | qc->dma_dir = cmd->sc_data_direction; | |
2008 | } | |
2009 | ||
2010 | qc->complete_fn = ata_scsi_qc_complete; | |
2011 | ||
ad706991 | 2012 | if (xlat_func(qc)) |
ae006510 | 2013 | goto early_finish; |
1da177e4 | 2014 | |
31cc23b3 TH |
2015 | if (ap->ops->qc_defer) { |
2016 | if ((rc = ap->ops->qc_defer(qc))) | |
2017 | goto defer; | |
2018 | } | |
2019 | ||
1da177e4 | 2020 | /* select device, send command to hardware */ |
8e0e694a | 2021 | ata_qc_issue(qc); |
1da177e4 LT |
2022 | |
2023 | VPRINTK("EXIT\n"); | |
2115ea94 | 2024 | return 0; |
1da177e4 | 2025 | |
ae006510 | 2026 | early_finish: |
2dcb407e | 2027 | ata_qc_free(qc); |
b27dcfb0 | 2028 | cmd->scsi_done(cmd); |
ae006510 | 2029 | DPRINTK("EXIT - early finish (good or error)\n"); |
2115ea94 | 2030 | return 0; |
ae006510 DG |
2031 | |
2032 | err_did: | |
1da177e4 | 2033 | ata_qc_free(qc); |
ae006510 | 2034 | cmd->result = (DID_ERROR << 16); |
b27dcfb0 | 2035 | cmd->scsi_done(cmd); |
253b92ec | 2036 | err_mem: |
ae006510 | 2037 | DPRINTK("EXIT - internal\n"); |
2115ea94 | 2038 | return 0; |
3dc1d881 TH |
2039 | |
2040 | defer: | |
31cc23b3 | 2041 | ata_qc_free(qc); |
3dc1d881 | 2042 | DPRINTK("EXIT - defer\n"); |
31cc23b3 TH |
2043 | if (rc == ATA_DEFER_LINK) |
2044 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
2045 | else | |
2046 | return SCSI_MLQUEUE_HOST_BUSY; | |
1da177e4 LT |
2047 | } |
2048 | ||
f0a37d12 CH |
2049 | struct ata_scsi_args { |
2050 | struct ata_device *dev; | |
2051 | u16 *id; | |
2052 | struct scsi_cmnd *cmd; | |
f0a37d12 CH |
2053 | }; |
2054 | ||
1da177e4 LT |
2055 | /** |
2056 | * ata_scsi_rbuf_get - Map response buffer. | |
ec2a20e6 | 2057 | * @cmd: SCSI command containing buffer to be mapped. |
87340e98 TH |
2058 | * @flags: unsigned long variable to store irq enable status |
2059 | * @copy_in: copy in from user buffer | |
1da177e4 | 2060 | * |
87340e98 | 2061 | * Prepare buffer for simulated SCSI commands. |
1da177e4 LT |
2062 | * |
2063 | * LOCKING: | |
87340e98 | 2064 | * spin_lock_irqsave(ata_scsi_rbuf_lock) on success |
1da177e4 LT |
2065 | * |
2066 | * RETURNS: | |
87340e98 | 2067 | * Pointer to response buffer. |
1da177e4 | 2068 | */ |
87340e98 TH |
2069 | static void *ata_scsi_rbuf_get(struct scsi_cmnd *cmd, bool copy_in, |
2070 | unsigned long *flags) | |
1da177e4 | 2071 | { |
87340e98 | 2072 | spin_lock_irqsave(&ata_scsi_rbuf_lock, *flags); |
1da177e4 | 2073 | |
87340e98 TH |
2074 | memset(ata_scsi_rbuf, 0, ATA_SCSI_RBUF_SIZE); |
2075 | if (copy_in) | |
2076 | sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), | |
2077 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); | |
2078 | return ata_scsi_rbuf; | |
1da177e4 LT |
2079 | } |
2080 | ||
2081 | /** | |
2082 | * ata_scsi_rbuf_put - Unmap response buffer. | |
2083 | * @cmd: SCSI command containing buffer to be unmapped. | |
87340e98 TH |
2084 | * @copy_out: copy out result |
2085 | * @flags: @flags passed to ata_scsi_rbuf_get() | |
1da177e4 | 2086 | * |
87340e98 TH |
2087 | * Returns rbuf buffer. The result is copied to @cmd's buffer if |
2088 | * @copy_back is true. | |
1da177e4 LT |
2089 | * |
2090 | * LOCKING: | |
87340e98 | 2091 | * Unlocks ata_scsi_rbuf_lock. |
1da177e4 | 2092 | */ |
87340e98 TH |
2093 | static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, bool copy_out, |
2094 | unsigned long *flags) | |
1da177e4 | 2095 | { |
87340e98 TH |
2096 | if (copy_out) |
2097 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), | |
2098 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); | |
2099 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, *flags); | |
1da177e4 LT |
2100 | } |
2101 | ||
2102 | /** | |
2103 | * ata_scsi_rbuf_fill - wrapper for SCSI command simulators | |
2104 | * @args: device IDENTIFY data / SCSI command of interest. | |
2105 | * @actor: Callback hook for desired SCSI command simulator | |
2106 | * | |
2107 | * Takes care of the hard work of simulating a SCSI command... | |
2108 | * Mapping the response buffer, calling the command's handler, | |
2109 | * and handling the handler's return value. This return value | |
2110 | * indicates whether the handler wishes the SCSI command to be | |
ae006510 DG |
2111 | * completed successfully (0), or not (in which case cmd->result |
2112 | * and sense buffer are assumed to be set). | |
1da177e4 LT |
2113 | * |
2114 | * LOCKING: | |
cca3974e | 2115 | * spin_lock_irqsave(host lock) |
1da177e4 | 2116 | */ |
f0761be3 | 2117 | static void ata_scsi_rbuf_fill(struct ata_scsi_args *args, |
87340e98 | 2118 | unsigned int (*actor)(struct ata_scsi_args *args, u8 *rbuf)) |
1da177e4 LT |
2119 | { |
2120 | u8 *rbuf; | |
87340e98 | 2121 | unsigned int rc; |
1da177e4 | 2122 | struct scsi_cmnd *cmd = args->cmd; |
b445c568 JG |
2123 | unsigned long flags; |
2124 | ||
87340e98 TH |
2125 | rbuf = ata_scsi_rbuf_get(cmd, false, &flags); |
2126 | rc = actor(args, rbuf); | |
2127 | ata_scsi_rbuf_put(cmd, rc == 0, &flags); | |
b445c568 | 2128 | |
ae006510 | 2129 | if (rc == 0) |
1da177e4 | 2130 | cmd->result = SAM_STAT_GOOD; |
1da177e4 LT |
2131 | } |
2132 | ||
2133 | /** | |
2134 | * ata_scsiop_inq_std - Simulate INQUIRY command | |
2135 | * @args: device IDENTIFY data / SCSI command of interest. | |
2136 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2137 | * |
2138 | * Returns standard device identification data associated | |
b142eb65 | 2139 | * with non-VPD INQUIRY command output. |
1da177e4 LT |
2140 | * |
2141 | * LOCKING: | |
cca3974e | 2142 | * spin_lock_irqsave(host lock) |
1da177e4 | 2143 | */ |
87340e98 | 2144 | static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2145 | { |
87340e98 | 2146 | const u8 versions[] = { |
f9ca5ab8 | 2147 | 0x00, |
87340e98 TH |
2148 | 0x60, /* SAM-3 (no version claimed) */ |
2149 | ||
2150 | 0x03, | |
2151 | 0x20, /* SBC-2 (no version claimed) */ | |
2152 | ||
29a37ea4 TY |
2153 | 0x03, |
2154 | 0x00 /* SPC-3 (no version claimed) */ | |
87340e98 | 2155 | }; |
f9ca5ab8 HR |
2156 | const u8 versions_zbc[] = { |
2157 | 0x00, | |
2158 | 0xA0, /* SAM-5 (no version claimed) */ | |
2159 | ||
856c4663 HR |
2160 | 0x06, |
2161 | 0x00, /* SBC-4 (no version claimed) */ | |
f9ca5ab8 | 2162 | |
856c4663 HR |
2163 | 0x05, |
2164 | 0xC0, /* SPC-5 (no version claimed) */ | |
f9ca5ab8 HR |
2165 | |
2166 | 0x60, | |
856c4663 | 2167 | 0x24, /* ZBC r05 */ |
f9ca5ab8 HR |
2168 | }; |
2169 | ||
1da177e4 LT |
2170 | u8 hdr[] = { |
2171 | TYPE_DISK, | |
2172 | 0, | |
2173 | 0x5, /* claim SPC-3 version compatibility */ | |
2174 | 2, | |
415ffdde TY |
2175 | 95 - 4, |
2176 | 0, | |
2177 | 0, | |
2178 | 2 | |
1da177e4 LT |
2179 | }; |
2180 | ||
87340e98 TH |
2181 | VPRINTK("ENTER\n"); |
2182 | ||
8a3e33cf ML |
2183 | /* set scsi removable (RMB) bit per ata bit, or if the |
2184 | * AHCI port says it's external (Hotplug-capable, eSATA). | |
2185 | */ | |
2186 | if (ata_id_removable(args->id) || | |
2187 | (args->dev->link->ap->pflags & ATA_PFLAG_EXTERNAL)) | |
1da177e4 LT |
2188 | hdr[1] |= (1 << 7); |
2189 | ||
56b8cbab | 2190 | if (args->dev->class == ATA_DEV_ZAC) { |
f9ca5ab8 | 2191 | hdr[0] = TYPE_ZBC; |
56b8cbab TY |
2192 | hdr[2] = 0x7; /* claim SPC-5 version compatibility */ |
2193 | } | |
f9ca5ab8 | 2194 | |
1da177e4 | 2195 | memcpy(rbuf, hdr, sizeof(hdr)); |
87340e98 TH |
2196 | memcpy(&rbuf[8], "ATA ", 8); |
2197 | ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16); | |
c49a6bf5 KB |
2198 | |
2199 | /* From SAT, use last 2 words from fw rev unless they are spaces */ | |
2200 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV + 2, 4); | |
2201 | if (strncmp(&rbuf[32], " ", 4) == 0) | |
2202 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4); | |
1da177e4 | 2203 | |
87340e98 TH |
2204 | if (rbuf[32] == 0 || rbuf[32] == ' ') |
2205 | memcpy(&rbuf[32], "n/a ", 4); | |
1da177e4 | 2206 | |
856c4663 | 2207 | if (ata_id_zoned_cap(args->id) || args->dev->class == ATA_DEV_ZAC) |
f9ca5ab8 HR |
2208 | memcpy(rbuf + 58, versions_zbc, sizeof(versions_zbc)); |
2209 | else | |
2210 | memcpy(rbuf + 58, versions, sizeof(versions)); | |
1da177e4 LT |
2211 | |
2212 | return 0; | |
2213 | } | |
2214 | ||
2215 | /** | |
b142eb65 | 2216 | * ata_scsiop_inq_00 - Simulate INQUIRY VPD page 0, list of pages |
1da177e4 LT |
2217 | * @args: device IDENTIFY data / SCSI command of interest. |
2218 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 2219 | * |
b142eb65 | 2220 | * Returns list of inquiry VPD pages available. |
1da177e4 LT |
2221 | * |
2222 | * LOCKING: | |
cca3974e | 2223 | * spin_lock_irqsave(host lock) |
1da177e4 | 2224 | */ |
87340e98 | 2225 | static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2226 | { |
6d1003ae | 2227 | int num_pages; |
1da177e4 LT |
2228 | const u8 pages[] = { |
2229 | 0x00, /* page 0x00, this page */ | |
2230 | 0x80, /* page 0x80, unit serial no page */ | |
1e9dbc92 MW |
2231 | 0x83, /* page 0x83, device ident page */ |
2232 | 0x89, /* page 0x89, ata info page */ | |
18f0f978 | 2233 | 0xb0, /* page 0xb0, block limits page */ |
1e9dbc92 | 2234 | 0xb1, /* page 0xb1, block device characteristics page */ |
02e0a604 | 2235 | 0xb2, /* page 0xb2, thin provisioning page */ |
6d1003ae | 2236 | 0xb6, /* page 0xb6, zoned block device characteristics */ |
1da177e4 | 2237 | }; |
1da177e4 | 2238 | |
6d1003ae HR |
2239 | num_pages = sizeof(pages); |
2240 | if (!(args->dev->flags & ATA_DFLAG_ZAC)) | |
2241 | num_pages--; | |
2242 | rbuf[3] = num_pages; /* number of supported VPD pages */ | |
2243 | memcpy(rbuf + 4, pages, num_pages); | |
1da177e4 LT |
2244 | return 0; |
2245 | } | |
2246 | ||
2247 | /** | |
b142eb65 | 2248 | * ata_scsiop_inq_80 - Simulate INQUIRY VPD page 80, device serial number |
1da177e4 LT |
2249 | * @args: device IDENTIFY data / SCSI command of interest. |
2250 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2251 | * |
2252 | * Returns ATA device serial number. | |
2253 | * | |
2254 | * LOCKING: | |
cca3974e | 2255 | * spin_lock_irqsave(host lock) |
1da177e4 | 2256 | */ |
87340e98 | 2257 | static unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 LT |
2258 | { |
2259 | const u8 hdr[] = { | |
2260 | 0, | |
2261 | 0x80, /* this page code */ | |
2262 | 0, | |
a0cf733b | 2263 | ATA_ID_SERNO_LEN, /* page len */ |
1da177e4 | 2264 | }; |
1da177e4 | 2265 | |
87340e98 TH |
2266 | memcpy(rbuf, hdr, sizeof(hdr)); |
2267 | ata_id_string(args->id, (unsigned char *) &rbuf[4], | |
2268 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
1da177e4 LT |
2269 | return 0; |
2270 | } | |
2271 | ||
1da177e4 | 2272 | /** |
b142eb65 | 2273 | * ata_scsiop_inq_83 - Simulate INQUIRY VPD page 83, device identity |
1da177e4 LT |
2274 | * @args: device IDENTIFY data / SCSI command of interest. |
2275 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 2276 | * |
b142eb65 JG |
2277 | * Yields two logical unit device identification designators: |
2278 | * - vendor specific ASCII containing the ATA serial number | |
2279 | * - SAT defined "t10 vendor id based" containing ASCII vendor | |
2280 | * name ("ATA "), model and serial numbers. | |
1da177e4 LT |
2281 | * |
2282 | * LOCKING: | |
cca3974e | 2283 | * spin_lock_irqsave(host lock) |
1da177e4 | 2284 | */ |
87340e98 | 2285 | static unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2286 | { |
b142eb65 | 2287 | const int sat_model_serial_desc_len = 68; |
87340e98 | 2288 | int num; |
1da177e4 | 2289 | |
b142eb65 JG |
2290 | rbuf[1] = 0x83; /* this page code */ |
2291 | num = 4; | |
2292 | ||
87340e98 TH |
2293 | /* piv=0, assoc=lu, code_set=ACSII, designator=vendor */ |
2294 | rbuf[num + 0] = 2; | |
2295 | rbuf[num + 3] = ATA_ID_SERNO_LEN; | |
2296 | num += 4; | |
2297 | ata_id_string(args->id, (unsigned char *) rbuf + num, | |
2298 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
2299 | num += ATA_ID_SERNO_LEN; | |
2300 | ||
2301 | /* SAT defined lu model and serial numbers descriptor */ | |
2302 | /* piv=0, assoc=lu, code_set=ACSII, designator=t10 vendor id */ | |
2303 | rbuf[num + 0] = 2; | |
2304 | rbuf[num + 1] = 1; | |
2305 | rbuf[num + 3] = sat_model_serial_desc_len; | |
2306 | num += 4; | |
2307 | memcpy(rbuf + num, "ATA ", 8); | |
2308 | num += 8; | |
2309 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_PROD, | |
2310 | ATA_ID_PROD_LEN); | |
2311 | num += ATA_ID_PROD_LEN; | |
2312 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_SERNO, | |
2313 | ATA_ID_SERNO_LEN); | |
2314 | num += ATA_ID_SERNO_LEN; | |
2315 | ||
6b3b9d73 HR |
2316 | if (ata_id_has_wwn(args->id)) { |
2317 | /* SAT defined lu world wide name */ | |
2318 | /* piv=0, assoc=lu, code_set=binary, designator=NAA */ | |
2319 | rbuf[num + 0] = 1; | |
2320 | rbuf[num + 1] = 3; | |
2321 | rbuf[num + 3] = ATA_ID_WWN_LEN; | |
2322 | num += 4; | |
2323 | ata_id_string(args->id, (unsigned char *) rbuf + num, | |
2324 | ATA_ID_WWN, ATA_ID_WWN_LEN); | |
2325 | num += ATA_ID_WWN_LEN; | |
2326 | } | |
b142eb65 | 2327 | rbuf[3] = num - 4; /* page len (assume less than 256 bytes) */ |
1da177e4 LT |
2328 | return 0; |
2329 | } | |
2330 | ||
ad355b46 JG |
2331 | /** |
2332 | * ata_scsiop_inq_89 - Simulate INQUIRY VPD page 89, ATA info | |
2333 | * @args: device IDENTIFY data / SCSI command of interest. | |
2334 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
ad355b46 JG |
2335 | * |
2336 | * Yields SAT-specified ATA VPD page. | |
2337 | * | |
2338 | * LOCKING: | |
2339 | * spin_lock_irqsave(host lock) | |
2340 | */ | |
87340e98 | 2341 | static unsigned int ata_scsiop_inq_89(struct ata_scsi_args *args, u8 *rbuf) |
ad355b46 | 2342 | { |
ad355b46 | 2343 | struct ata_taskfile tf; |
ad355b46 | 2344 | |
ad355b46 JG |
2345 | memset(&tf, 0, sizeof(tf)); |
2346 | ||
87340e98 TH |
2347 | rbuf[1] = 0x89; /* our page code */ |
2348 | rbuf[2] = (0x238 >> 8); /* page size fixed at 238h */ | |
2349 | rbuf[3] = (0x238 & 0xff); | |
ad355b46 | 2350 | |
87340e98 TH |
2351 | memcpy(&rbuf[8], "linux ", 8); |
2352 | memcpy(&rbuf[16], "libata ", 16); | |
2353 | memcpy(&rbuf[32], DRV_VERSION, 4); | |
ad355b46 JG |
2354 | |
2355 | /* we don't store the ATA device signature, so we fake it */ | |
2356 | ||
2357 | tf.command = ATA_DRDY; /* really, this is Status reg */ | |
2358 | tf.lbal = 0x1; | |
2359 | tf.nsect = 0x1; | |
2360 | ||
87340e98 TH |
2361 | ata_tf_to_fis(&tf, 0, 1, &rbuf[36]); /* TODO: PMP? */ |
2362 | rbuf[36] = 0x34; /* force D2H Reg FIS (34h) */ | |
ad355b46 | 2363 | |
87340e98 | 2364 | rbuf[56] = ATA_CMD_ID_ATA; |
ad355b46 | 2365 | |
87340e98 | 2366 | memcpy(&rbuf[60], &args->id[0], 512); |
ad355b46 JG |
2367 | return 0; |
2368 | } | |
2369 | ||
18f0f978 CH |
2370 | static unsigned int ata_scsiop_inq_b0(struct ata_scsi_args *args, u8 *rbuf) |
2371 | { | |
295124dc | 2372 | u16 min_io_sectors; |
18f0f978 CH |
2373 | |
2374 | rbuf[1] = 0xb0; | |
2375 | rbuf[3] = 0x3c; /* required VPD size with unmap support */ | |
2376 | ||
2377 | /* | |
2378 | * Optimal transfer length granularity. | |
2379 | * | |
2380 | * This is always one physical block, but for disks with a smaller | |
2381 | * logical than physical sector size we need to figure out what the | |
2382 | * latter is. | |
2383 | */ | |
295124dc | 2384 | min_io_sectors = 1 << ata_id_log2_per_physical_sector(args->id); |
18f0f978 CH |
2385 | put_unaligned_be16(min_io_sectors, &rbuf[6]); |
2386 | ||
2387 | /* | |
2388 | * Optimal unmap granularity. | |
2389 | * | |
2390 | * The ATA spec doesn't even know about a granularity or alignment | |
2391 | * for the TRIM command. We can leave away most of the unmap related | |
2392 | * VPD page entries, but we have specifify a granularity to signal | |
2393 | * that we support some form of unmap - in thise case via WRITE SAME | |
2394 | * with the unmap bit set. | |
2395 | */ | |
e78db4df | 2396 | if (ata_id_has_trim(args->id)) { |
2983860c | 2397 | put_unaligned_be64(65535 * ATA_MAX_TRIM_RNUM, &rbuf[36]); |
18f0f978 | 2398 | put_unaligned_be32(1, &rbuf[28]); |
e78db4df | 2399 | } |
18f0f978 CH |
2400 | |
2401 | return 0; | |
2402 | } | |
2403 | ||
1e9dbc92 MW |
2404 | static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf) |
2405 | { | |
4bca3286 MP |
2406 | int form_factor = ata_id_form_factor(args->id); |
2407 | int media_rotation_rate = ata_id_rotation_rate(args->id); | |
856c4663 | 2408 | u8 zoned = ata_id_zoned_cap(args->id); |
4bca3286 | 2409 | |
1e9dbc92 MW |
2410 | rbuf[1] = 0xb1; |
2411 | rbuf[3] = 0x3c; | |
4bca3286 MP |
2412 | rbuf[4] = media_rotation_rate >> 8; |
2413 | rbuf[5] = media_rotation_rate; | |
2414 | rbuf[7] = form_factor; | |
856c4663 HR |
2415 | if (zoned) |
2416 | rbuf[8] = (zoned << 4); | |
1e9dbc92 MW |
2417 | |
2418 | return 0; | |
2419 | } | |
2420 | ||
02e0a604 MP |
2421 | static unsigned int ata_scsiop_inq_b2(struct ata_scsi_args *args, u8 *rbuf) |
2422 | { | |
2423 | /* SCSI Thin Provisioning VPD page: SBC-3 rev 22 or later */ | |
2424 | rbuf[1] = 0xb2; | |
2425 | rbuf[3] = 0x4; | |
2426 | rbuf[5] = 1 << 6; /* TPWS */ | |
2427 | ||
2428 | return 0; | |
2429 | } | |
2430 | ||
6d1003ae HR |
2431 | static unsigned int ata_scsiop_inq_b6(struct ata_scsi_args *args, u8 *rbuf) |
2432 | { | |
2433 | /* | |
2434 | * zbc-r05 SCSI Zoned Block device characteristics VPD page | |
2435 | */ | |
2436 | rbuf[1] = 0xb6; | |
2437 | rbuf[3] = 0x3C; | |
2438 | ||
2439 | /* | |
2440 | * URSWRZ bit is only meaningful for host-managed ZAC drives | |
2441 | */ | |
2442 | if (args->dev->zac_zoned_cap & 1) | |
2443 | rbuf[4] |= 1; | |
2444 | put_unaligned_be32(args->dev->zac_zones_optimal_open, &rbuf[8]); | |
2445 | put_unaligned_be32(args->dev->zac_zones_optimal_nonseq, &rbuf[12]); | |
2446 | put_unaligned_be32(args->dev->zac_zones_max_open, &rbuf[16]); | |
2447 | ||
2448 | return 0; | |
2449 | } | |
2450 | ||
6ca8e794 PB |
2451 | /** |
2452 | * modecpy - Prepare response for MODE SENSE | |
2453 | * @dest: output buffer | |
2454 | * @src: data being copied | |
2455 | * @n: length of mode page | |
2456 | * @changeable: whether changeable parameters are requested | |
2457 | * | |
2458 | * Generate a generic MODE SENSE page for either current or changeable | |
2459 | * parameters. | |
2460 | * | |
2461 | * LOCKING: | |
2462 | * None. | |
2463 | */ | |
2464 | static void modecpy(u8 *dest, const u8 *src, int n, bool changeable) | |
2465 | { | |
2466 | if (changeable) { | |
2467 | memcpy(dest, src, 2); | |
2468 | memset(dest + 2, 0, n - 2); | |
2469 | } else { | |
2470 | memcpy(dest, src, n); | |
2471 | } | |
2472 | } | |
2473 | ||
1da177e4 LT |
2474 | /** |
2475 | * ata_msense_caching - Simulate MODE SENSE caching info page | |
2476 | * @id: device IDENTIFY data | |
87340e98 | 2477 | * @buf: output buffer |
6ca8e794 | 2478 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2479 | * |
2480 | * Generate a caching info page, which conditionally indicates | |
2481 | * write caching to the SCSI layer, depending on device | |
2482 | * capabilities. | |
2483 | * | |
2484 | * LOCKING: | |
2485 | * None. | |
2486 | */ | |
6ca8e794 | 2487 | static unsigned int ata_msense_caching(u16 *id, u8 *buf, bool changeable) |
1da177e4 | 2488 | { |
6ca8e794 | 2489 | modecpy(buf, def_cache_mpage, sizeof(def_cache_mpage), changeable); |
737bee93 TY |
2490 | if (changeable) { |
2491 | buf[2] |= (1 << 2); /* ata_mselect_caching() */ | |
2492 | } else { | |
2493 | buf[2] |= (ata_id_wcache_enabled(id) << 2); /* write cache enable */ | |
2494 | buf[12] |= (!ata_id_rahead_enabled(id) << 5); /* disable read ahead */ | |
2495 | } | |
87340e98 | 2496 | return sizeof(def_cache_mpage); |
1da177e4 LT |
2497 | } |
2498 | ||
2499 | /** | |
f086b748 | 2500 | * ata_msense_control - Simulate MODE SENSE control mode page |
06dbde5f | 2501 | * @dev: ATA device of interest |
87340e98 | 2502 | * @buf: output buffer |
6ca8e794 | 2503 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2504 | * |
2505 | * Generate a generic MODE SENSE control mode page. | |
2506 | * | |
2507 | * LOCKING: | |
2508 | * None. | |
2509 | */ | |
f086b748 | 2510 | static unsigned int ata_msense_control(struct ata_device *dev, u8 *buf, |
06dbde5f | 2511 | bool changeable) |
1da177e4 | 2512 | { |
6ca8e794 | 2513 | modecpy(buf, def_control_mpage, sizeof(def_control_mpage), changeable); |
737bee93 TY |
2514 | if (changeable) { |
2515 | buf[2] |= (1 << 2); /* ata_mselect_control() */ | |
2516 | } else { | |
2517 | bool d_sense = (dev->flags & ATA_DFLAG_D_SENSE); | |
2518 | ||
2519 | buf[2] |= (d_sense << 2); /* descriptor format sense data */ | |
2520 | } | |
00ac37f5 | 2521 | return sizeof(def_control_mpage); |
1da177e4 LT |
2522 | } |
2523 | ||
2524 | /** | |
2525 | * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page | |
ec2a20e6 | 2526 | * @buf: output buffer |
6ca8e794 | 2527 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2528 | * |
2529 | * Generate a generic MODE SENSE r/w error recovery page. | |
2530 | * | |
2531 | * LOCKING: | |
2532 | * None. | |
2533 | */ | |
6ca8e794 | 2534 | static unsigned int ata_msense_rw_recovery(u8 *buf, bool changeable) |
1da177e4 | 2535 | { |
6ca8e794 PB |
2536 | modecpy(buf, def_rw_recovery_mpage, sizeof(def_rw_recovery_mpage), |
2537 | changeable); | |
00ac37f5 | 2538 | return sizeof(def_rw_recovery_mpage); |
1da177e4 LT |
2539 | } |
2540 | ||
48bdc8ec JA |
2541 | /* |
2542 | * We can turn this into a real blacklist if it's needed, for now just | |
2543 | * blacklist any Maxtor BANC1G10 revision firmware | |
2544 | */ | |
2545 | static int ata_dev_supports_fua(u16 *id) | |
2546 | { | |
a0cf733b | 2547 | unsigned char model[ATA_ID_PROD_LEN + 1], fw[ATA_ID_FW_REV_LEN + 1]; |
48bdc8ec | 2548 | |
c3c013a2 JG |
2549 | if (!libata_fua) |
2550 | return 0; | |
48bdc8ec JA |
2551 | if (!ata_id_has_fua(id)) |
2552 | return 0; | |
2553 | ||
a0cf733b TH |
2554 | ata_id_c_string(id, model, ATA_ID_PROD, sizeof(model)); |
2555 | ata_id_c_string(id, fw, ATA_ID_FW_REV, sizeof(fw)); | |
48bdc8ec | 2556 | |
2e02671d | 2557 | if (strcmp(model, "Maxtor")) |
48bdc8ec | 2558 | return 1; |
2e02671d | 2559 | if (strcmp(fw, "BANC1G10")) |
48bdc8ec JA |
2560 | return 1; |
2561 | ||
2562 | return 0; /* blacklisted */ | |
2563 | } | |
2564 | ||
1da177e4 LT |
2565 | /** |
2566 | * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands | |
2567 | * @args: device IDENTIFY data / SCSI command of interest. | |
2568 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 2569 | * |
00ac37f5 DG |
2570 | * Simulate MODE SENSE commands. Assume this is invoked for direct |
2571 | * access devices (e.g. disks) only. There should be no block | |
2572 | * descriptor for other device types. | |
1da177e4 LT |
2573 | * |
2574 | * LOCKING: | |
cca3974e | 2575 | * spin_lock_irqsave(host lock) |
1da177e4 | 2576 | */ |
87340e98 | 2577 | static unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2578 | { |
9a3dccc4 | 2579 | struct ata_device *dev = args->dev; |
87340e98 | 2580 | u8 *scsicmd = args->cmd->cmnd, *p = rbuf; |
00ac37f5 DG |
2581 | const u8 sat_blk_desc[] = { |
2582 | 0, 0, 0, 0, /* number of blocks: sat unspecified */ | |
2583 | 0, | |
2584 | 0, 0x2, 0x0 /* block length: 512 bytes */ | |
2585 | }; | |
2586 | u8 pg, spg; | |
87340e98 | 2587 | unsigned int ebd, page_control, six_byte; |
0df10b84 | 2588 | u8 dpofua, bp = 0xff; |
bcfc867d | 2589 | u16 fp; |
1da177e4 LT |
2590 | |
2591 | VPRINTK("ENTER\n"); | |
2592 | ||
2593 | six_byte = (scsicmd[0] == MODE_SENSE); | |
00ac37f5 DG |
2594 | ebd = !(scsicmd[1] & 0x8); /* dbd bit inverted == edb */ |
2595 | /* | |
2596 | * LLBA bit in msense(10) ignored (compliant) | |
1da177e4 | 2597 | */ |
00ac37f5 | 2598 | |
1da177e4 | 2599 | page_control = scsicmd[2] >> 6; |
ae006510 DG |
2600 | switch (page_control) { |
2601 | case 0: /* current */ | |
6ca8e794 PB |
2602 | case 1: /* changeable */ |
2603 | case 2: /* defaults */ | |
ae006510 DG |
2604 | break; /* supported */ |
2605 | case 3: /* saved */ | |
2606 | goto saving_not_supp; | |
ae006510 | 2607 | default: |
bcfc867d | 2608 | fp = 2; |
0df10b84 | 2609 | bp = 6; |
ae006510 DG |
2610 | goto invalid_fld; |
2611 | } | |
1da177e4 | 2612 | |
87340e98 TH |
2613 | if (six_byte) |
2614 | p += 4 + (ebd ? 8 : 0); | |
2615 | else | |
2616 | p += 8 + (ebd ? 8 : 0); | |
1da177e4 | 2617 | |
00ac37f5 DG |
2618 | pg = scsicmd[2] & 0x3f; |
2619 | spg = scsicmd[3]; | |
2620 | /* | |
2621 | * No mode subpages supported (yet) but asking for _all_ | |
2622 | * subpages may be valid | |
2623 | */ | |
bcfc867d HR |
2624 | if (spg && (spg != ALL_SUB_MPAGES)) { |
2625 | fp = 3; | |
00ac37f5 | 2626 | goto invalid_fld; |
bcfc867d | 2627 | } |
00ac37f5 DG |
2628 | |
2629 | switch(pg) { | |
2630 | case RW_RECOVERY_MPAGE: | |
6ca8e794 | 2631 | p += ata_msense_rw_recovery(p, page_control == 1); |
1da177e4 LT |
2632 | break; |
2633 | ||
00ac37f5 | 2634 | case CACHE_MPAGE: |
6ca8e794 | 2635 | p += ata_msense_caching(args->id, p, page_control == 1); |
1da177e4 LT |
2636 | break; |
2637 | ||
87340e98 | 2638 | case CONTROL_MPAGE: |
f086b748 | 2639 | p += ata_msense_control(args->dev, p, page_control == 1); |
1da177e4 | 2640 | break; |
1da177e4 | 2641 | |
00ac37f5 | 2642 | case ALL_MPAGES: |
6ca8e794 PB |
2643 | p += ata_msense_rw_recovery(p, page_control == 1); |
2644 | p += ata_msense_caching(args->id, p, page_control == 1); | |
f086b748 | 2645 | p += ata_msense_control(args->dev, p, page_control == 1); |
1da177e4 LT |
2646 | break; |
2647 | ||
2648 | default: /* invalid page code */ | |
bcfc867d | 2649 | fp = 2; |
ae006510 | 2650 | goto invalid_fld; |
1da177e4 LT |
2651 | } |
2652 | ||
9a3dccc4 | 2653 | dpofua = 0; |
f79d409f | 2654 | if (ata_dev_supports_fua(args->id) && (dev->flags & ATA_DFLAG_LBA48) && |
9a3dccc4 TH |
2655 | (!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count)) |
2656 | dpofua = 1 << 4; | |
2657 | ||
1da177e4 | 2658 | if (six_byte) { |
87340e98 TH |
2659 | rbuf[0] = p - rbuf - 1; |
2660 | rbuf[2] |= dpofua; | |
00ac37f5 | 2661 | if (ebd) { |
87340e98 TH |
2662 | rbuf[3] = sizeof(sat_blk_desc); |
2663 | memcpy(rbuf + 4, sat_blk_desc, sizeof(sat_blk_desc)); | |
00ac37f5 | 2664 | } |
1da177e4 | 2665 | } else { |
87340e98 TH |
2666 | unsigned int output_len = p - rbuf - 2; |
2667 | ||
1da177e4 | 2668 | rbuf[0] = output_len >> 8; |
87340e98 TH |
2669 | rbuf[1] = output_len; |
2670 | rbuf[3] |= dpofua; | |
00ac37f5 | 2671 | if (ebd) { |
87340e98 TH |
2672 | rbuf[7] = sizeof(sat_blk_desc); |
2673 | memcpy(rbuf + 8, sat_blk_desc, sizeof(sat_blk_desc)); | |
00ac37f5 | 2674 | } |
1da177e4 | 2675 | } |
1da177e4 | 2676 | return 0; |
ae006510 DG |
2677 | |
2678 | invalid_fld: | |
0df10b84 | 2679 | ata_scsi_set_invalid_field(dev, args->cmd, fp, bp); |
ae006510 DG |
2680 | return 1; |
2681 | ||
2682 | saving_not_supp: | |
06dbde5f | 2683 | ata_scsi_set_sense(dev, args->cmd, ILLEGAL_REQUEST, 0x39, 0x0); |
ae006510 DG |
2684 | /* "Saving parameters not supported" */ |
2685 | return 1; | |
1da177e4 LT |
2686 | } |
2687 | ||
2688 | /** | |
2689 | * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands | |
2690 | * @args: device IDENTIFY data / SCSI command of interest. | |
2691 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2692 | * |
2693 | * Simulate READ CAPACITY commands. | |
2694 | * | |
2695 | * LOCKING: | |
6a36261e | 2696 | * None. |
1da177e4 | 2697 | */ |
87340e98 | 2698 | static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2699 | { |
61d79a8e MP |
2700 | struct ata_device *dev = args->dev; |
2701 | u64 last_lba = dev->n_sectors - 1; /* LBA of the last block */ | |
295124dc GG |
2702 | u32 sector_size; /* physical sector size in bytes */ |
2703 | u8 log2_per_phys; | |
2704 | u16 lowest_aligned; | |
2705 | ||
2706 | sector_size = ata_id_logical_sector_size(dev->id); | |
2707 | log2_per_phys = ata_id_log2_per_physical_sector(dev->id); | |
2708 | lowest_aligned = ata_id_logical_sector_offset(dev->id, log2_per_phys); | |
1da177e4 LT |
2709 | |
2710 | VPRINTK("ENTER\n"); | |
2711 | ||
1da177e4 | 2712 | if (args->cmd->cmnd[0] == READ_CAPACITY) { |
6a36261e TH |
2713 | if (last_lba >= 0xffffffffULL) |
2714 | last_lba = 0xffffffff; | |
0c144d0d | 2715 | |
1da177e4 | 2716 | /* sector count, 32-bit */ |
87340e98 TH |
2717 | rbuf[0] = last_lba >> (8 * 3); |
2718 | rbuf[1] = last_lba >> (8 * 2); | |
2719 | rbuf[2] = last_lba >> (8 * 1); | |
2720 | rbuf[3] = last_lba; | |
1da177e4 LT |
2721 | |
2722 | /* sector size */ | |
295124dc GG |
2723 | rbuf[4] = sector_size >> (8 * 3); |
2724 | rbuf[5] = sector_size >> (8 * 2); | |
2725 | rbuf[6] = sector_size >> (8 * 1); | |
2726 | rbuf[7] = sector_size; | |
1da177e4 LT |
2727 | } else { |
2728 | /* sector count, 64-bit */ | |
87340e98 TH |
2729 | rbuf[0] = last_lba >> (8 * 7); |
2730 | rbuf[1] = last_lba >> (8 * 6); | |
2731 | rbuf[2] = last_lba >> (8 * 5); | |
2732 | rbuf[3] = last_lba >> (8 * 4); | |
2733 | rbuf[4] = last_lba >> (8 * 3); | |
2734 | rbuf[5] = last_lba >> (8 * 2); | |
2735 | rbuf[6] = last_lba >> (8 * 1); | |
2736 | rbuf[7] = last_lba; | |
1da177e4 LT |
2737 | |
2738 | /* sector size */ | |
295124dc GG |
2739 | rbuf[ 8] = sector_size >> (8 * 3); |
2740 | rbuf[ 9] = sector_size >> (8 * 2); | |
2741 | rbuf[10] = sector_size >> (8 * 1); | |
2742 | rbuf[11] = sector_size; | |
61d79a8e MP |
2743 | |
2744 | rbuf[12] = 0; | |
295124dc | 2745 | rbuf[13] = log2_per_phys; |
61d79a8e MP |
2746 | rbuf[14] = (lowest_aligned >> 8) & 0x3f; |
2747 | rbuf[15] = lowest_aligned; | |
18f0f978 | 2748 | |
71d126fd AF |
2749 | if (ata_id_has_trim(args->id) && |
2750 | !(dev->horkage & ATA_HORKAGE_NOTRIM)) { | |
e61f7d1c | 2751 | rbuf[14] |= 0x80; /* LBPME */ |
e78db4df | 2752 | |
e61f7d1c MP |
2753 | if (ata_id_has_zero_after_trim(args->id) && |
2754 | dev->horkage & ATA_HORKAGE_ZERO_AFTER_TRIM) { | |
2755 | ata_dev_info(dev, "Enabling discard_zeroes_data\n"); | |
2756 | rbuf[14] |= 0x40; /* LBPRZ */ | |
2757 | } | |
e78db4df | 2758 | } |
6d1003ae HR |
2759 | if (ata_id_zoned_cap(args->id) || |
2760 | args->dev->class == ATA_DEV_ZAC) | |
2761 | rbuf[12] = (1 << 4); /* RC_BASIS */ | |
1da177e4 | 2762 | } |
1da177e4 LT |
2763 | return 0; |
2764 | } | |
2765 | ||
2766 | /** | |
2767 | * ata_scsiop_report_luns - Simulate REPORT LUNS command | |
2768 | * @args: device IDENTIFY data / SCSI command of interest. | |
2769 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2770 | * |
2771 | * Simulate REPORT LUNS command. | |
2772 | * | |
2773 | * LOCKING: | |
cca3974e | 2774 | * spin_lock_irqsave(host lock) |
1da177e4 | 2775 | */ |
87340e98 | 2776 | static unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 LT |
2777 | { |
2778 | VPRINTK("ENTER\n"); | |
2779 | rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */ | |
2780 | ||
2781 | return 0; | |
2782 | } | |
2783 | ||
77853bf2 | 2784 | static void atapi_sense_complete(struct ata_queued_cmd *qc) |
a939c963 | 2785 | { |
74e6c8c3 | 2786 | if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) { |
c6e6e666 JG |
2787 | /* FIXME: not quite right; we don't want the |
2788 | * translation of taskfile registers into | |
2789 | * a sense descriptors, since that's only | |
2790 | * correct for ATA, not ATAPI | |
2791 | */ | |
750426aa | 2792 | ata_gen_passthru_sense(qc); |
74e6c8c3 | 2793 | } |
a939c963 | 2794 | |
2aa8f5d6 | 2795 | ata_qc_done(qc); |
c6e6e666 | 2796 | } |
a939c963 | 2797 | |
c6e6e666 JG |
2798 | /* is it pointless to prefer PIO for "safety reasons"? */ |
2799 | static inline int ata_pio_use_silly(struct ata_port *ap) | |
2800 | { | |
2801 | return (ap->flags & ATA_FLAG_PIO_DMA); | |
2802 | } | |
2803 | ||
2804 | static void atapi_request_sense(struct ata_queued_cmd *qc) | |
2805 | { | |
2806 | struct ata_port *ap = qc->ap; | |
2807 | struct scsi_cmnd *cmd = qc->scsicmd; | |
2808 | ||
2809 | DPRINTK("ATAPI request sense\n"); | |
a939c963 | 2810 | |
7ccd720d | 2811 | memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); |
a939c963 | 2812 | |
127102ae | 2813 | #ifdef CONFIG_ATA_SFF |
855d854a JB |
2814 | if (ap->ops->sff_tf_read) |
2815 | ap->ops->sff_tf_read(ap, &qc->tf); | |
127102ae | 2816 | #endif |
c6e6e666 JG |
2817 | |
2818 | /* fill these in, for the case where they are -not- overwritten */ | |
2819 | cmd->sense_buffer[0] = 0x70; | |
2820 | cmd->sense_buffer[2] = qc->tf.feature >> 4; | |
2821 | ||
2822 | ata_qc_reinit(qc); | |
2823 | ||
93f8fecb | 2824 | /* setup sg table and init transfer direction */ |
cadb7345 | 2825 | sg_init_one(&qc->sgent, cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); |
93f8fecb | 2826 | ata_sg_init(qc, &qc->sgent, 1); |
a939c963 JG |
2827 | qc->dma_dir = DMA_FROM_DEVICE; |
2828 | ||
6e7846e9 | 2829 | memset(&qc->cdb, 0, qc->dev->cdb_len); |
a939c963 JG |
2830 | qc->cdb[0] = REQUEST_SENSE; |
2831 | qc->cdb[4] = SCSI_SENSE_BUFFERSIZE; | |
2832 | ||
2833 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
2834 | qc->tf.command = ATA_CMD_PACKET; | |
2835 | ||
c6e6e666 | 2836 | if (ata_pio_use_silly(ap)) { |
0dc36888 | 2837 | qc->tf.protocol = ATAPI_PROT_DMA; |
c6e6e666 JG |
2838 | qc->tf.feature |= ATAPI_PKT_DMA; |
2839 | } else { | |
0dc36888 | 2840 | qc->tf.protocol = ATAPI_PROT_PIO; |
2db78dd3 AC |
2841 | qc->tf.lbam = SCSI_SENSE_BUFFERSIZE; |
2842 | qc->tf.lbah = 0; | |
c6e6e666 | 2843 | } |
a939c963 JG |
2844 | qc->nbytes = SCSI_SENSE_BUFFERSIZE; |
2845 | ||
c6e6e666 | 2846 | qc->complete_fn = atapi_sense_complete; |
a939c963 | 2847 | |
8e0e694a | 2848 | ata_qc_issue(qc); |
a939c963 JG |
2849 | |
2850 | DPRINTK("EXIT\n"); | |
2851 | } | |
2852 | ||
aa18da8b CH |
2853 | /* |
2854 | * ATAPI devices typically report zero for their SCSI version, and sometimes | |
2855 | * deviate from the spec WRT response data format. If SCSI version is | |
2856 | * reported as zero like normal, then we make the following fixups: | |
2857 | * 1) Fake MMC-5 version, to indicate to the Linux scsi midlayer this is a | |
2858 | * modern device. | |
2859 | * 2) Ensure response data format / ATAPI information are always correct. | |
2860 | */ | |
2861 | static void atapi_fixup_inquiry(struct scsi_cmnd *cmd) | |
2862 | { | |
2863 | u8 buf[4]; | |
2864 | ||
2865 | sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, 4); | |
2866 | if (buf[2] == 0) { | |
2867 | buf[2] = 0x5; | |
2868 | buf[3] = 0x32; | |
2869 | } | |
2870 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, 4); | |
2871 | } | |
2872 | ||
77853bf2 | 2873 | static void atapi_qc_complete(struct ata_queued_cmd *qc) |
1da177e4 LT |
2874 | { |
2875 | struct scsi_cmnd *cmd = qc->scsicmd; | |
a22e2eb0 | 2876 | unsigned int err_mask = qc->err_mask; |
1da177e4 | 2877 | |
a7dac447 | 2878 | VPRINTK("ENTER, err_mask 0x%X\n", err_mask); |
e12669e7 | 2879 | |
246619da TH |
2880 | /* handle completion from new EH */ |
2881 | if (unlikely(qc->ap->ops->error_handler && | |
2882 | (err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID))) { | |
2883 | ||
2884 | if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) { | |
2885 | /* FIXME: not quite right; we don't want the | |
2886 | * translation of taskfile registers into a | |
2887 | * sense descriptors, since that's only | |
2888 | * correct for ATA, not ATAPI | |
2889 | */ | |
750426aa | 2890 | ata_gen_passthru_sense(qc); |
246619da TH |
2891 | } |
2892 | ||
22aac089 TH |
2893 | /* SCSI EH automatically locks door if sdev->locked is |
2894 | * set. Sometimes door lock request continues to | |
2895 | * fail, for example, when no media is present. This | |
2896 | * creates a loop - SCSI EH issues door lock which | |
2897 | * fails and gets invoked again to acquire sense data | |
2898 | * for the failed command. | |
2899 | * | |
2900 | * If door lock fails, always clear sdev->locked to | |
2901 | * avoid this infinite loop. | |
2a5f07b5 TH |
2902 | * |
2903 | * This may happen before SCSI scan is complete. Make | |
2904 | * sure qc->dev->sdev isn't NULL before dereferencing. | |
22aac089 | 2905 | */ |
2a5f07b5 | 2906 | if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL && qc->dev->sdev) |
22aac089 TH |
2907 | qc->dev->sdev->locked = 0; |
2908 | ||
246619da | 2909 | qc->scsicmd->result = SAM_STAT_CHECK_CONDITION; |
2aa8f5d6 | 2910 | ata_qc_done(qc); |
246619da TH |
2911 | return; |
2912 | } | |
2913 | ||
2914 | /* successful completion or old EH failure path */ | |
a7dac447 | 2915 | if (unlikely(err_mask & AC_ERR_DEV)) { |
1da177e4 | 2916 | cmd->result = SAM_STAT_CHECK_CONDITION; |
c6e6e666 | 2917 | atapi_request_sense(qc); |
77853bf2 | 2918 | return; |
74e6c8c3 | 2919 | } else if (unlikely(err_mask)) { |
a7dac447 JG |
2920 | /* FIXME: not quite right; we don't want the |
2921 | * translation of taskfile registers into | |
2922 | * a sense descriptors, since that's only | |
2923 | * correct for ATA, not ATAPI | |
2924 | */ | |
750426aa | 2925 | ata_gen_passthru_sense(qc); |
74e6c8c3 | 2926 | } else { |
aa18da8b CH |
2927 | if (cmd->cmnd[0] == INQUIRY && (cmd->cmnd[1] & 0x03) == 0) |
2928 | atapi_fixup_inquiry(cmd); | |
1da177e4 LT |
2929 | cmd->result = SAM_STAT_GOOD; |
2930 | } | |
2931 | ||
2aa8f5d6 | 2932 | ata_qc_done(qc); |
1da177e4 LT |
2933 | } |
2934 | /** | |
2935 | * atapi_xlat - Initialize PACKET taskfile | |
2936 | * @qc: command structure to be initialized | |
1da177e4 LT |
2937 | * |
2938 | * LOCKING: | |
cca3974e | 2939 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
2940 | * |
2941 | * RETURNS: | |
2942 | * Zero on success, non-zero on failure. | |
2943 | */ | |
ad706991 | 2944 | static unsigned int atapi_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 2945 | { |
542b1444 | 2946 | struct scsi_cmnd *scmd = qc->scsicmd; |
1da177e4 | 2947 | struct ata_device *dev = qc->dev; |
542b1444 | 2948 | int nodata = (scmd->sc_data_direction == DMA_NONE); |
5895ef9a | 2949 | int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO); |
2db78dd3 | 2950 | unsigned int nbytes; |
1da177e4 | 2951 | |
2e5704f6 TH |
2952 | memset(qc->cdb, 0, dev->cdb_len); |
2953 | memcpy(qc->cdb, scmd->cmnd, scmd->cmd_len); | |
1da177e4 LT |
2954 | |
2955 | qc->complete_fn = atapi_qc_complete; | |
2956 | ||
2957 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
542b1444 | 2958 | if (scmd->sc_data_direction == DMA_TO_DEVICE) { |
1da177e4 LT |
2959 | qc->tf.flags |= ATA_TFLAG_WRITE; |
2960 | DPRINTK("direction: write\n"); | |
2961 | } | |
2962 | ||
2963 | qc->tf.command = ATA_CMD_PACKET; | |
aacda375 | 2964 | ata_qc_set_pc_nbytes(qc); |
e00f1ff3 TH |
2965 | |
2966 | /* check whether ATAPI DMA is safe */ | |
5895ef9a | 2967 | if (!nodata && !using_pio && atapi_check_dma(qc)) |
e00f1ff3 | 2968 | using_pio = 1; |
1da177e4 | 2969 | |
e190222d TH |
2970 | /* Some controller variants snoop this value for Packet |
2971 | * transfers to do state machine and FIFO management. Thus we | |
2972 | * want to set it properly, and for DMA where it is | |
2973 | * effectively meaningless. | |
2974 | */ | |
aacda375 | 2975 | nbytes = min(ata_qc_raw_nbytes(qc), (unsigned int)63 * 1024); |
2db78dd3 | 2976 | |
e190222d TH |
2977 | /* Most ATAPI devices which honor transfer chunk size don't |
2978 | * behave according to the spec when odd chunk size which | |
2979 | * matches the transfer length is specified. If the number of | |
2980 | * bytes to transfer is 2n+1. According to the spec, what | |
2981 | * should happen is to indicate that 2n+1 is going to be | |
2982 | * transferred and transfer 2n+2 bytes where the last byte is | |
2983 | * padding. | |
2984 | * | |
2985 | * In practice, this doesn't happen. ATAPI devices first | |
2986 | * indicate and transfer 2n bytes and then indicate and | |
2987 | * transfer 2 bytes where the last byte is padding. | |
2988 | * | |
2989 | * This inconsistency confuses several controllers which | |
2990 | * perform PIO using DMA such as Intel AHCIs and sil3124/32. | |
2991 | * These controllers use actual number of transferred bytes to | |
2992 | * update DMA poitner and transfer of 4n+2 bytes make those | |
2993 | * controller push DMA pointer by 4n+4 bytes because SATA data | |
2994 | * FISes are aligned to 4 bytes. This causes data corruption | |
2995 | * and buffer overrun. | |
2996 | * | |
2997 | * Always setting nbytes to even number solves this problem | |
2998 | * because then ATAPI devices don't have to split data at 2n | |
2999 | * boundaries. | |
3000 | */ | |
3001 | if (nbytes & 0x1) | |
3002 | nbytes++; | |
3003 | ||
2db78dd3 AC |
3004 | qc->tf.lbam = (nbytes & 0xFF); |
3005 | qc->tf.lbah = (nbytes >> 8); | |
3006 | ||
5895ef9a TH |
3007 | if (nodata) |
3008 | qc->tf.protocol = ATAPI_PROT_NODATA; | |
3009 | else if (using_pio) | |
3010 | qc->tf.protocol = ATAPI_PROT_PIO; | |
3011 | else { | |
e00f1ff3 | 3012 | /* DMA data xfer */ |
0dc36888 | 3013 | qc->tf.protocol = ATAPI_PROT_DMA; |
1da177e4 LT |
3014 | qc->tf.feature |= ATAPI_PKT_DMA; |
3015 | ||
91163006 TH |
3016 | if ((dev->flags & ATA_DFLAG_DMADIR) && |
3017 | (scmd->sc_data_direction != DMA_TO_DEVICE)) | |
95de719a | 3018 | /* some SATA bridges need us to indicate data xfer direction */ |
1da177e4 | 3019 | qc->tf.feature |= ATAPI_DMADIR; |
1da177e4 LT |
3020 | } |
3021 | ||
2db78dd3 AC |
3022 | |
3023 | /* FIXME: We need to translate 0x05 READ_BLOCK_LIMITS to a MODE_SENSE | |
3024 | as ATAPI tape drives don't get this right otherwise */ | |
1da177e4 LT |
3025 | return 0; |
3026 | } | |
3027 | ||
2dcb407e | 3028 | static struct ata_device *ata_find_dev(struct ata_port *ap, int devno) |
ab5b3a5b | 3029 | { |
071f44b1 | 3030 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
3031 | if (likely(devno < ata_link_max_devices(&ap->link))) |
3032 | return &ap->link.device[devno]; | |
3033 | } else { | |
3034 | if (likely(devno < ap->nr_pmp_links)) | |
3035 | return &ap->pmp_link[devno].device[0]; | |
3036 | } | |
3037 | ||
ab5b3a5b TH |
3038 | return NULL; |
3039 | } | |
3040 | ||
2dcb407e JG |
3041 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
3042 | const struct scsi_device *scsidev) | |
ab5b3a5b | 3043 | { |
41bda9c9 TH |
3044 | int devno; |
3045 | ||
ab5b3a5b | 3046 | /* skip commands not addressed to targets we simulate */ |
071f44b1 | 3047 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
3048 | if (unlikely(scsidev->channel || scsidev->lun)) |
3049 | return NULL; | |
3050 | devno = scsidev->id; | |
3051 | } else { | |
3052 | if (unlikely(scsidev->id || scsidev->lun)) | |
3053 | return NULL; | |
3054 | devno = scsidev->channel; | |
3055 | } | |
ab5b3a5b | 3056 | |
41bda9c9 | 3057 | return ata_find_dev(ap, devno); |
ab5b3a5b TH |
3058 | } |
3059 | ||
1da177e4 LT |
3060 | /** |
3061 | * ata_scsi_find_dev - lookup ata_device from scsi_cmnd | |
3062 | * @ap: ATA port to which the device is attached | |
3063 | * @scsidev: SCSI device from which we derive the ATA device | |
3064 | * | |
3065 | * Given various information provided in struct scsi_cmnd, | |
3066 | * map that onto an ATA bus, and using that mapping | |
3067 | * determine which ata_device is associated with the | |
3068 | * SCSI command to be sent. | |
3069 | * | |
3070 | * LOCKING: | |
cca3974e | 3071 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
3072 | * |
3073 | * RETURNS: | |
3074 | * Associated ATA device, or %NULL if not found. | |
3075 | */ | |
1da177e4 | 3076 | static struct ata_device * |
057ace5e | 3077 | ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev) |
1da177e4 | 3078 | { |
ab5b3a5b | 3079 | struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev); |
1da177e4 | 3080 | |
2486fa56 | 3081 | if (unlikely(!dev || !ata_dev_enabled(dev))) |
1da177e4 LT |
3082 | return NULL; |
3083 | ||
1da177e4 LT |
3084 | return dev; |
3085 | } | |
3086 | ||
b095518e JG |
3087 | /* |
3088 | * ata_scsi_map_proto - Map pass-thru protocol value to taskfile value. | |
3089 | * @byte1: Byte 1 from pass-thru CDB. | |
3090 | * | |
3091 | * RETURNS: | |
3092 | * ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise. | |
3093 | */ | |
3094 | static u8 | |
3095 | ata_scsi_map_proto(u8 byte1) | |
3096 | { | |
3097 | switch((byte1 & 0x1e) >> 1) { | |
2dcb407e JG |
3098 | case 3: /* Non-data */ |
3099 | return ATA_PROT_NODATA; | |
3100 | ||
3101 | case 6: /* DMA */ | |
3102 | case 10: /* UDMA Data-in */ | |
3103 | case 11: /* UDMA Data-Out */ | |
3104 | return ATA_PROT_DMA; | |
3105 | ||
3106 | case 4: /* PIO Data-in */ | |
3107 | case 5: /* PIO Data-out */ | |
3108 | return ATA_PROT_PIO; | |
3109 | ||
ee7fb331 VK |
3110 | case 12: /* FPDMA */ |
3111 | return ATA_PROT_NCQ; | |
3112 | ||
2dcb407e JG |
3113 | case 0: /* Hard Reset */ |
3114 | case 1: /* SRST */ | |
3115 | case 8: /* Device Diagnostic */ | |
3116 | case 9: /* Device Reset */ | |
3117 | case 7: /* DMA Queued */ | |
2dcb407e JG |
3118 | case 15: /* Return Response Info */ |
3119 | default: /* Reserved */ | |
3120 | break; | |
b095518e JG |
3121 | } |
3122 | ||
3123 | return ATA_PROT_UNKNOWN; | |
3124 | } | |
3125 | ||
3126 | /** | |
3127 | * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile | |
3128 | * @qc: command structure to be initialized | |
b095518e JG |
3129 | * |
3130 | * Handles either 12 or 16-byte versions of the CDB. | |
3131 | * | |
3132 | * RETURNS: | |
3133 | * Zero on success, non-zero on failure. | |
3134 | */ | |
ad706991 | 3135 | static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc) |
b095518e JG |
3136 | { |
3137 | struct ata_taskfile *tf = &(qc->tf); | |
542b1444 | 3138 | struct scsi_cmnd *scmd = qc->scsicmd; |
f79d409f | 3139 | struct ata_device *dev = qc->dev; |
ad706991 | 3140 | const u8 *cdb = scmd->cmnd; |
bcfc867d | 3141 | u16 fp; |
b095518e | 3142 | |
bcfc867d HR |
3143 | if ((tf->protocol = ata_scsi_map_proto(cdb[1])) == ATA_PROT_UNKNOWN) { |
3144 | fp = 1; | |
9a405257 | 3145 | goto invalid_fld; |
bcfc867d | 3146 | } |
8190bdb9 | 3147 | |
5b844b63 HR |
3148 | if (ata_is_ncq(tf->protocol) && (cdb[2] & 0x3) == 0) |
3149 | tf->protocol = ATA_PROT_NCQ_NODATA; | |
3150 | ||
5f8e7f17 VK |
3151 | /* enable LBA */ |
3152 | tf->flags |= ATA_TFLAG_LBA; | |
3153 | ||
b095518e JG |
3154 | /* |
3155 | * 12 and 16 byte CDBs use different offsets to | |
3156 | * provide the various register values. | |
3157 | */ | |
542b1444 | 3158 | if (cdb[0] == ATA_16) { |
b095518e JG |
3159 | /* |
3160 | * 16-byte CDB - may contain extended commands. | |
3161 | * | |
3162 | * If that is the case, copy the upper byte register values. | |
3163 | */ | |
542b1444 TH |
3164 | if (cdb[1] & 0x01) { |
3165 | tf->hob_feature = cdb[3]; | |
3166 | tf->hob_nsect = cdb[5]; | |
3167 | tf->hob_lbal = cdb[7]; | |
3168 | tf->hob_lbam = cdb[9]; | |
3169 | tf->hob_lbah = cdb[11]; | |
b095518e JG |
3170 | tf->flags |= ATA_TFLAG_LBA48; |
3171 | } else | |
3172 | tf->flags &= ~ATA_TFLAG_LBA48; | |
3173 | ||
3174 | /* | |
3175 | * Always copy low byte, device and command registers. | |
3176 | */ | |
542b1444 TH |
3177 | tf->feature = cdb[4]; |
3178 | tf->nsect = cdb[6]; | |
3179 | tf->lbal = cdb[8]; | |
3180 | tf->lbam = cdb[10]; | |
3181 | tf->lbah = cdb[12]; | |
3182 | tf->device = cdb[13]; | |
3183 | tf->command = cdb[14]; | |
b095518e JG |
3184 | } else { |
3185 | /* | |
3186 | * 12-byte CDB - incapable of extended commands. | |
3187 | */ | |
3188 | tf->flags &= ~ATA_TFLAG_LBA48; | |
3189 | ||
542b1444 TH |
3190 | tf->feature = cdb[3]; |
3191 | tf->nsect = cdb[4]; | |
3192 | tf->lbal = cdb[5]; | |
3193 | tf->lbam = cdb[6]; | |
3194 | tf->lbah = cdb[7]; | |
3195 | tf->device = cdb[8]; | |
3196 | tf->command = cdb[9]; | |
b095518e | 3197 | } |
fa4453c4 | 3198 | |
179b310a HR |
3199 | /* For NCQ commands copy the tag value */ |
3200 | if (ata_is_ncq(tf->protocol)) | |
ee7fb331 VK |
3201 | tf->nsect = qc->tag << 3; |
3202 | ||
fa4453c4 AL |
3203 | /* enforce correct master/slave bit */ |
3204 | tf->device = dev->devno ? | |
3205 | tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1; | |
b095518e | 3206 | |
bd30add8 | 3207 | switch (tf->command) { |
295124dc | 3208 | /* READ/WRITE LONG use a non-standard sect_size */ |
bd30add8 TH |
3209 | case ATA_CMD_READ_LONG: |
3210 | case ATA_CMD_READ_LONG_ONCE: | |
3211 | case ATA_CMD_WRITE_LONG: | |
3212 | case ATA_CMD_WRITE_LONG_ONCE: | |
bcfc867d HR |
3213 | if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1) { |
3214 | fp = 1; | |
bd30add8 | 3215 | goto invalid_fld; |
bcfc867d | 3216 | } |
bd30add8 | 3217 | qc->sect_size = scsi_bufflen(scmd); |
295124dc GG |
3218 | break; |
3219 | ||
3220 | /* commands using reported Logical Block size (e.g. 512 or 4K) */ | |
3221 | case ATA_CMD_CFA_WRITE_NE: | |
3222 | case ATA_CMD_CFA_TRANS_SECT: | |
3223 | case ATA_CMD_CFA_WRITE_MULT_NE: | |
3224 | /* XXX: case ATA_CMD_CFA_WRITE_SECTORS_WITHOUT_ERASE: */ | |
3225 | case ATA_CMD_READ: | |
3226 | case ATA_CMD_READ_EXT: | |
3227 | case ATA_CMD_READ_QUEUED: | |
3228 | /* XXX: case ATA_CMD_READ_QUEUED_EXT: */ | |
3229 | case ATA_CMD_FPDMA_READ: | |
3230 | case ATA_CMD_READ_MULTI: | |
3231 | case ATA_CMD_READ_MULTI_EXT: | |
3232 | case ATA_CMD_PIO_READ: | |
3233 | case ATA_CMD_PIO_READ_EXT: | |
3234 | case ATA_CMD_READ_STREAM_DMA_EXT: | |
3235 | case ATA_CMD_READ_STREAM_EXT: | |
3236 | case ATA_CMD_VERIFY: | |
3237 | case ATA_CMD_VERIFY_EXT: | |
3238 | case ATA_CMD_WRITE: | |
3239 | case ATA_CMD_WRITE_EXT: | |
3240 | case ATA_CMD_WRITE_FUA_EXT: | |
3241 | case ATA_CMD_WRITE_QUEUED: | |
3242 | case ATA_CMD_WRITE_QUEUED_FUA_EXT: | |
3243 | case ATA_CMD_FPDMA_WRITE: | |
3244 | case ATA_CMD_WRITE_MULTI: | |
3245 | case ATA_CMD_WRITE_MULTI_EXT: | |
3246 | case ATA_CMD_WRITE_MULTI_FUA_EXT: | |
3247 | case ATA_CMD_PIO_WRITE: | |
3248 | case ATA_CMD_PIO_WRITE_EXT: | |
3249 | case ATA_CMD_WRITE_STREAM_DMA_EXT: | |
3250 | case ATA_CMD_WRITE_STREAM_EXT: | |
3251 | qc->sect_size = scmd->device->sector_size; | |
3252 | break; | |
3253 | ||
3254 | /* Everything else uses 512 byte "sectors" */ | |
3255 | default: | |
3256 | qc->sect_size = ATA_SECT_SIZE; | |
bd30add8 TH |
3257 | } |
3258 | ||
3259 | /* | |
3260 | * Set flags so that all registers will be written, pass on | |
3261 | * write indication (used for PIO/DMA setup), result TF is | |
3262 | * copied back and we don't whine too much about its failure. | |
3263 | */ | |
bc496ed0 | 3264 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
bd30add8 TH |
3265 | if (scmd->sc_data_direction == DMA_TO_DEVICE) |
3266 | tf->flags |= ATA_TFLAG_WRITE; | |
3267 | ||
3268 | qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET; | |
3269 | ||
3270 | /* | |
3271 | * Set transfer length. | |
3272 | * | |
3273 | * TODO: find out if we need to do more here to | |
3274 | * cover scatter/gather case. | |
3275 | */ | |
3276 | ata_qc_set_pc_nbytes(qc); | |
3277 | ||
3278 | /* We may not issue DMA commands if no DMA mode is set */ | |
bcfc867d HR |
3279 | if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0) { |
3280 | fp = 1; | |
bd30add8 | 3281 | goto invalid_fld; |
bcfc867d | 3282 | } |
bd30add8 | 3283 | |
1dce589c | 3284 | /* sanity check for pio multi commands */ |
bcfc867d HR |
3285 | if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf)) { |
3286 | fp = 1; | |
1dce589c | 3287 | goto invalid_fld; |
bcfc867d | 3288 | } |
1dce589c AL |
3289 | |
3290 | if (is_multi_taskfile(tf)) { | |
3291 | unsigned int multi_count = 1 << (cdb[1] >> 5); | |
3292 | ||
3293 | /* compare the passed through multi_count | |
3294 | * with the cached multi_count of libata | |
3295 | */ | |
3296 | if (multi_count != dev->multi_count) | |
a9a79dfe JP |
3297 | ata_dev_warn(dev, "invalid multi_count %u ignored\n", |
3298 | multi_count); | |
d26fc955 | 3299 | } |
1dce589c | 3300 | |
b095518e JG |
3301 | /* |
3302 | * Filter SET_FEATURES - XFER MODE command -- otherwise, | |
3303 | * SET_FEATURES - XFER MODE must be preceded/succeeded | |
3304 | * by an update to hardware-specific registers for each | |
3305 | * controller (i.e. the reason for ->set_piomode(), | |
3306 | * ->set_dmamode(), and ->post_set_mode() hooks). | |
3307 | */ | |
bd30add8 | 3308 | if (tf->command == ATA_CMD_SET_FEATURES && |
bcfc867d HR |
3309 | tf->feature == SETFEATURES_XFER) { |
3310 | fp = (cdb[0] == ATA_16) ? 4 : 3; | |
9a405257 | 3311 | goto invalid_fld; |
bcfc867d | 3312 | } |
b095518e JG |
3313 | |
3314 | /* | |
bd30add8 TH |
3315 | * Filter TPM commands by default. These provide an |
3316 | * essentially uncontrolled encrypted "back door" between | |
3317 | * applications and the disk. Set libata.allow_tpm=1 if you | |
3318 | * have a real reason for wanting to use them. This ensures | |
3319 | * that installed software cannot easily mess stuff up without | |
3320 | * user intent. DVR type users will probably ship with this enabled | |
3321 | * for movie content management. | |
b095518e | 3322 | * |
bd30add8 TH |
3323 | * Note that for ATA8 we can issue a DCS change and DCS freeze lock |
3324 | * for this and should do in future but that it is not sufficient as | |
3325 | * DCS is an optional feature set. Thus we also do the software filter | |
3326 | * so that we comply with the TC consortium stated goal that the user | |
3327 | * can turn off TC features of their system. | |
b095518e | 3328 | */ |
bcfc867d HR |
3329 | if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm) { |
3330 | fp = (cdb[0] == ATA_16) ? 14 : 9; | |
bd30add8 | 3331 | goto invalid_fld; |
bcfc867d | 3332 | } |
e61e0672 | 3333 | |
b095518e | 3334 | return 0; |
9a405257 TH |
3335 | |
3336 | invalid_fld: | |
0df10b84 | 3337 | ata_scsi_set_invalid_field(dev, scmd, fp, 0xff); |
9a405257 | 3338 | return 1; |
b095518e JG |
3339 | } |
3340 | ||
9379e6b8 ST |
3341 | /** |
3342 | * ata_format_dsm_trim_descr() - SATL Write Same to DSM Trim | |
3343 | * @cmd: SCSI command being translated | |
ef2d7392 | 3344 | * @trmax: Maximum number of entries that will fit in sector_size bytes. |
9379e6b8 | 3345 | * @sector: Starting sector |
7b203094 | 3346 | * @count: Total Range of request in logical sectors |
9379e6b8 ST |
3347 | * |
3348 | * Rewrite the WRITE SAME descriptor to be a DSM TRIM little-endian formatted | |
3349 | * descriptor. | |
3350 | * | |
3351 | * Upto 64 entries of the format: | |
3352 | * 63:48 Range Length | |
3353 | * 47:0 LBA | |
3354 | * | |
3355 | * Range Length of 0 is ignored. | |
3356 | * LBA's should be sorted order and not overlap. | |
3357 | * | |
3358 | * NOTE: this is the same format as ADD LBA(S) TO NV CACHE PINNED SET | |
ef2d7392 ST |
3359 | * |
3360 | * Return: Number of bytes copied into sglist. | |
9379e6b8 | 3361 | */ |
ef2d7392 ST |
3362 | static size_t ata_format_dsm_trim_descr(struct scsi_cmnd *cmd, u32 trmax, |
3363 | u64 sector, u32 count) | |
3364 | { | |
3365 | struct scsi_device *sdp = cmd->device; | |
3366 | size_t len = sdp->sector_size; | |
3367 | size_t r; | |
3368 | __le64 *buf; | |
3369 | u32 i = 0; | |
9379e6b8 ST |
3370 | unsigned long flags; |
3371 | ||
ef2d7392 ST |
3372 | WARN_ON(len > ATA_SCSI_RBUF_SIZE); |
3373 | ||
3374 | if (len > ATA_SCSI_RBUF_SIZE) | |
3375 | len = ATA_SCSI_RBUF_SIZE; | |
9379e6b8 ST |
3376 | |
3377 | spin_lock_irqsave(&ata_scsi_rbuf_lock, flags); | |
ef2d7392 ST |
3378 | buf = ((void *)ata_scsi_rbuf); |
3379 | memset(buf, 0, len); | |
3380 | while (i < trmax) { | |
9379e6b8 ST |
3381 | u64 entry = sector | |
3382 | ((u64)(count > 0xffff ? 0xffff : count) << 48); | |
ef2d7392 | 3383 | buf[i++] = __cpu_to_le64(entry); |
9379e6b8 ST |
3384 | if (count <= 0xffff) |
3385 | break; | |
3386 | count -= 0xffff; | |
3387 | sector += 0xffff; | |
3388 | } | |
ef2d7392 | 3389 | r = sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, len); |
9379e6b8 ST |
3390 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, flags); |
3391 | ||
ef2d7392 | 3392 | return r; |
9379e6b8 ST |
3393 | } |
3394 | ||
7b203094 ST |
3395 | /** |
3396 | * ata_scsi_write_same_xlat() - SATL Write Same to ATA SCT Write Same | |
3397 | * @qc: Command to be translated | |
3398 | * | |
3399 | * Translate a SCSI WRITE SAME command to be either a DSM TRIM command or | |
3400 | * an SCT Write Same command. | |
6baf20bc MCC |
3401 | * Based on WRITE SAME has the UNMAP flag: |
3402 | * | |
3403 | * - When set translate to DSM TRIM | |
3404 | * - When clear translate to SCT Write Same | |
7b203094 | 3405 | */ |
18f0f978 CH |
3406 | static unsigned int ata_scsi_write_same_xlat(struct ata_queued_cmd *qc) |
3407 | { | |
3408 | struct ata_taskfile *tf = &qc->tf; | |
3409 | struct scsi_cmnd *scmd = qc->scsicmd; | |
ef2d7392 ST |
3410 | struct scsi_device *sdp = scmd->device; |
3411 | size_t len = sdp->sector_size; | |
18f0f978 CH |
3412 | struct ata_device *dev = qc->dev; |
3413 | const u8 *cdb = scmd->cmnd; | |
3414 | u64 block; | |
3415 | u32 n_block; | |
ef2d7392 | 3416 | const u32 trmax = len >> 3; |
18f0f978 | 3417 | u32 size; |
bcfc867d | 3418 | u16 fp; |
0df10b84 | 3419 | u8 bp = 0xff; |
7b203094 | 3420 | u8 unmap = cdb[1] & 0x8; |
18f0f978 CH |
3421 | |
3422 | /* we may not issue DMA commands if no DMA mode is set */ | |
3423 | if (unlikely(!dev->dma_mode)) | |
bcfc867d | 3424 | goto invalid_opcode; |
18f0f978 | 3425 | |
c6ade20f CH |
3426 | /* |
3427 | * We only allow sending this command through the block layer, | |
3428 | * as it modifies the DATA OUT buffer, which would corrupt user | |
3429 | * memory for SG_IO commands. | |
3430 | */ | |
3431 | if (unlikely(blk_rq_is_passthrough(scmd->request))) | |
3432 | goto invalid_opcode; | |
3433 | ||
bcfc867d HR |
3434 | if (unlikely(scmd->cmd_len < 16)) { |
3435 | fp = 15; | |
18f0f978 | 3436 | goto invalid_fld; |
bcfc867d | 3437 | } |
18f0f978 CH |
3438 | scsi_16_lba_len(cdb, &block, &n_block); |
3439 | ||
63ccc191 CH |
3440 | if (!unmap || |
3441 | (dev->horkage & ATA_HORKAGE_NOTRIM) || | |
3442 | !ata_id_has_trim(dev->id)) { | |
3443 | fp = 1; | |
3444 | bp = 3; | |
3445 | goto invalid_fld; | |
3446 | } | |
3447 | /* If the request is too large the cmd is invalid */ | |
3448 | if (n_block > 0xffff * trmax) { | |
3449 | fp = 2; | |
3450 | goto invalid_fld; | |
bcfc867d | 3451 | } |
18f0f978 CH |
3452 | |
3453 | /* | |
3454 | * WRITE SAME always has a sector sized buffer as payload, this | |
3455 | * should never be a multiple entry S/G list. | |
3456 | */ | |
3457 | if (!scsi_sg_count(scmd)) | |
bcfc867d | 3458 | goto invalid_param_len; |
18f0f978 | 3459 | |
ef2d7392 ST |
3460 | /* |
3461 | * size must match sector size in bytes | |
3462 | * For DATA SET MANAGEMENT TRIM in ACS-2 nsect (aka count) | |
3463 | * is defined as number of 512 byte blocks to be transferred. | |
3464 | */ | |
87fb6c31 | 3465 | |
63ccc191 CH |
3466 | size = ata_format_dsm_trim_descr(scmd, trmax, block, n_block); |
3467 | if (size != len) | |
3468 | goto invalid_param_len; | |
3469 | ||
3470 | if (ata_ncq_enabled(dev) && ata_fpdma_dsm_supported(dev)) { | |
3471 | /* Newer devices support queued TRIM commands */ | |
3472 | tf->protocol = ATA_PROT_NCQ; | |
3473 | tf->command = ATA_CMD_FPDMA_SEND; | |
3474 | tf->hob_nsect = ATA_SUBCMD_FPDMA_SEND_DSM & 0x1f; | |
3475 | tf->nsect = qc->tag << 3; | |
3476 | tf->hob_feature = (size / 512) >> 8; | |
3477 | tf->feature = size / 512; | |
3478 | ||
3479 | tf->auxiliary = 1; | |
3480 | } else { | |
7b203094 | 3481 | tf->protocol = ATA_PROT_DMA; |
63ccc191 CH |
3482 | tf->hob_feature = 0; |
3483 | tf->feature = ATA_DSM_TRIM; | |
3484 | tf->hob_nsect = (size / 512) >> 8; | |
3485 | tf->nsect = size / 512; | |
3486 | tf->command = ATA_CMD_DSM; | |
87fb6c31 MC |
3487 | } |
3488 | ||
18f0f978 CH |
3489 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 | |
3490 | ATA_TFLAG_WRITE; | |
3491 | ||
3492 | ata_qc_set_pc_nbytes(qc); | |
3493 | ||
3494 | return 0; | |
3495 | ||
bcfc867d | 3496 | invalid_fld: |
0df10b84 | 3497 | ata_scsi_set_invalid_field(dev, scmd, fp, bp); |
bcfc867d HR |
3498 | return 1; |
3499 | invalid_param_len: | |
3500 | /* "Parameter list length error" */ | |
3501 | ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
3502 | return 1; | |
3503 | invalid_opcode: | |
3504 | /* "Invalid command operation code" */ | |
3505 | ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x20, 0x0); | |
18f0f978 CH |
3506 | return 1; |
3507 | } | |
3508 | ||
7b203094 ST |
3509 | /** |
3510 | * ata_scsiop_maint_in - Simulate a subset of MAINTENANCE_IN | |
3511 | * @args: device MAINTENANCE_IN data / SCSI command of interest. | |
3512 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
3513 | * | |
3514 | * Yields a subset to satisfy scsi_report_opcode() | |
3515 | * | |
3516 | * LOCKING: | |
3517 | * spin_lock_irqsave(host lock) | |
3518 | */ | |
3519 | static unsigned int ata_scsiop_maint_in(struct ata_scsi_args *args, u8 *rbuf) | |
3520 | { | |
3521 | struct ata_device *dev = args->dev; | |
3522 | u8 *cdb = args->cmd->cmnd; | |
3523 | u8 supported = 0; | |
3524 | unsigned int err = 0; | |
3525 | ||
3526 | if (cdb[2] != 1) { | |
3527 | ata_dev_warn(dev, "invalid command format %d\n", cdb[2]); | |
3528 | err = 2; | |
3529 | goto out; | |
3530 | } | |
3531 | switch (cdb[3]) { | |
3532 | case INQUIRY: | |
3533 | case MODE_SENSE: | |
3534 | case MODE_SENSE_10: | |
3535 | case READ_CAPACITY: | |
3536 | case SERVICE_ACTION_IN_16: | |
3537 | case REPORT_LUNS: | |
3538 | case REQUEST_SENSE: | |
3539 | case SYNCHRONIZE_CACHE: | |
3540 | case REZERO_UNIT: | |
3541 | case SEEK_6: | |
3542 | case SEEK_10: | |
3543 | case TEST_UNIT_READY: | |
3544 | case SEND_DIAGNOSTIC: | |
3545 | case MAINTENANCE_IN: | |
3546 | case READ_6: | |
3547 | case READ_10: | |
3548 | case READ_16: | |
3549 | case WRITE_6: | |
3550 | case WRITE_10: | |
3551 | case WRITE_16: | |
3552 | case ATA_12: | |
3553 | case ATA_16: | |
3554 | case VERIFY: | |
3555 | case VERIFY_16: | |
3556 | case MODE_SELECT: | |
3557 | case MODE_SELECT_10: | |
3558 | case START_STOP: | |
3559 | supported = 3; | |
3560 | break; | |
7b203094 ST |
3561 | case ZBC_IN: |
3562 | case ZBC_OUT: | |
3563 | if (ata_id_zoned_cap(dev->id) || | |
3564 | dev->class == ATA_DEV_ZAC) | |
3565 | supported = 3; | |
3566 | break; | |
3567 | default: | |
3568 | break; | |
3569 | } | |
3570 | out: | |
3571 | rbuf[1] = supported; /* supported */ | |
3572 | return err; | |
3573 | } | |
3574 | ||
28a3fc22 HR |
3575 | /** |
3576 | * ata_scsi_report_zones_complete - convert ATA output | |
3577 | * @qc: command structure returning the data | |
3578 | * | |
3579 | * Convert T-13 little-endian field representation into | |
3580 | * T-10 big-endian field representation. | |
3581 | * What a mess. | |
3582 | */ | |
3583 | static void ata_scsi_report_zones_complete(struct ata_queued_cmd *qc) | |
3584 | { | |
3585 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3586 | struct sg_mapping_iter miter; | |
3587 | unsigned long flags; | |
3588 | unsigned int bytes = 0; | |
3589 | ||
3590 | sg_miter_start(&miter, scsi_sglist(scmd), scsi_sg_count(scmd), | |
3591 | SG_MITER_TO_SG | SG_MITER_ATOMIC); | |
3592 | ||
3593 | local_irq_save(flags); | |
3594 | while (sg_miter_next(&miter)) { | |
3595 | unsigned int offset = 0; | |
3596 | ||
3597 | if (bytes == 0) { | |
3598 | char *hdr; | |
3599 | u32 list_length; | |
3600 | u64 max_lba, opt_lba; | |
3601 | u16 same; | |
3602 | ||
3603 | /* Swizzle header */ | |
3604 | hdr = miter.addr; | |
3605 | list_length = get_unaligned_le32(&hdr[0]); | |
3606 | same = get_unaligned_le16(&hdr[4]); | |
3607 | max_lba = get_unaligned_le64(&hdr[8]); | |
3608 | opt_lba = get_unaligned_le64(&hdr[16]); | |
3609 | put_unaligned_be32(list_length, &hdr[0]); | |
3610 | hdr[4] = same & 0xf; | |
3611 | put_unaligned_be64(max_lba, &hdr[8]); | |
3612 | put_unaligned_be64(opt_lba, &hdr[16]); | |
3613 | offset += 64; | |
3614 | bytes += 64; | |
3615 | } | |
3616 | while (offset < miter.length) { | |
3617 | char *rec; | |
3618 | u8 cond, type, non_seq, reset; | |
3619 | u64 size, start, wp; | |
3620 | ||
3621 | /* Swizzle zone descriptor */ | |
3622 | rec = miter.addr + offset; | |
3623 | type = rec[0] & 0xf; | |
3624 | cond = (rec[1] >> 4) & 0xf; | |
3625 | non_seq = (rec[1] & 2); | |
3626 | reset = (rec[1] & 1); | |
3627 | size = get_unaligned_le64(&rec[8]); | |
3628 | start = get_unaligned_le64(&rec[16]); | |
3629 | wp = get_unaligned_le64(&rec[24]); | |
3630 | rec[0] = type; | |
3631 | rec[1] = (cond << 4) | non_seq | reset; | |
3632 | put_unaligned_be64(size, &rec[8]); | |
3633 | put_unaligned_be64(start, &rec[16]); | |
3634 | put_unaligned_be64(wp, &rec[24]); | |
3635 | WARN_ON(offset + 64 > miter.length); | |
3636 | offset += 64; | |
3637 | bytes += 64; | |
3638 | } | |
3639 | } | |
3640 | sg_miter_stop(&miter); | |
3641 | local_irq_restore(flags); | |
3642 | ||
3643 | ata_scsi_qc_complete(qc); | |
3644 | } | |
3645 | ||
3646 | static unsigned int ata_scsi_zbc_in_xlat(struct ata_queued_cmd *qc) | |
3647 | { | |
3648 | struct ata_taskfile *tf = &qc->tf; | |
3649 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3650 | const u8 *cdb = scmd->cmnd; | |
3651 | u16 sect, fp = (u16)-1; | |
3652 | u8 sa, options, bp = 0xff; | |
3653 | u64 block; | |
3654 | u32 n_block; | |
3655 | ||
3656 | if (unlikely(scmd->cmd_len < 16)) { | |
3657 | ata_dev_warn(qc->dev, "invalid cdb length %d\n", | |
3658 | scmd->cmd_len); | |
3659 | fp = 15; | |
3660 | goto invalid_fld; | |
3661 | } | |
3662 | scsi_16_lba_len(cdb, &block, &n_block); | |
3663 | if (n_block != scsi_bufflen(scmd)) { | |
3664 | ata_dev_warn(qc->dev, "non-matching transfer count (%d/%d)\n", | |
3665 | n_block, scsi_bufflen(scmd)); | |
3666 | goto invalid_param_len; | |
3667 | } | |
3668 | sa = cdb[1] & 0x1f; | |
3669 | if (sa != ZI_REPORT_ZONES) { | |
3670 | ata_dev_warn(qc->dev, "invalid service action %d\n", sa); | |
3671 | fp = 1; | |
3672 | goto invalid_fld; | |
3673 | } | |
3674 | /* | |
3675 | * ZAC allows only for transfers in 512 byte blocks, | |
3676 | * and uses a 16 bit value for the transfer count. | |
3677 | */ | |
3678 | if ((n_block / 512) > 0xffff || n_block < 512 || (n_block % 512)) { | |
3679 | ata_dev_warn(qc->dev, "invalid transfer count %d\n", n_block); | |
3680 | goto invalid_param_len; | |
3681 | } | |
3682 | sect = n_block / 512; | |
3f17422b | 3683 | options = cdb[14] & 0xbf; |
28a3fc22 HR |
3684 | |
3685 | if (ata_ncq_enabled(qc->dev) && | |
3686 | ata_fpdma_zac_mgmt_in_supported(qc->dev)) { | |
3687 | tf->protocol = ATA_PROT_NCQ; | |
3688 | tf->command = ATA_CMD_FPDMA_RECV; | |
3689 | tf->hob_nsect = ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN & 0x1f; | |
3690 | tf->nsect = qc->tag << 3; | |
3691 | tf->feature = sect & 0xff; | |
3692 | tf->hob_feature = (sect >> 8) & 0xff; | |
3f17422b | 3693 | tf->auxiliary = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES | (options << 8); |
28a3fc22 HR |
3694 | } else { |
3695 | tf->command = ATA_CMD_ZAC_MGMT_IN; | |
3696 | tf->feature = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES; | |
3697 | tf->protocol = ATA_PROT_DMA; | |
3698 | tf->hob_feature = options; | |
3699 | tf->hob_nsect = (sect >> 8) & 0xff; | |
3700 | tf->nsect = sect & 0xff; | |
3701 | } | |
3702 | tf->device = ATA_LBA; | |
3703 | tf->lbah = (block >> 16) & 0xff; | |
3704 | tf->lbam = (block >> 8) & 0xff; | |
3705 | tf->lbal = block & 0xff; | |
3706 | tf->hob_lbah = (block >> 40) & 0xff; | |
3707 | tf->hob_lbam = (block >> 32) & 0xff; | |
3708 | tf->hob_lbal = (block >> 24) & 0xff; | |
3709 | ||
3710 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48; | |
3711 | qc->flags |= ATA_QCFLAG_RESULT_TF; | |
3712 | ||
3713 | ata_qc_set_pc_nbytes(qc); | |
3714 | ||
3715 | qc->complete_fn = ata_scsi_report_zones_complete; | |
3716 | ||
3717 | return 0; | |
3718 | ||
3719 | invalid_fld: | |
3720 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); | |
3721 | return 1; | |
3722 | ||
3723 | invalid_param_len: | |
3724 | /* "Parameter list length error" */ | |
3725 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
3726 | return 1; | |
3727 | } | |
3728 | ||
27708a95 HR |
3729 | static unsigned int ata_scsi_zbc_out_xlat(struct ata_queued_cmd *qc) |
3730 | { | |
3731 | struct ata_taskfile *tf = &qc->tf; | |
3732 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3733 | struct ata_device *dev = qc->dev; | |
3734 | const u8 *cdb = scmd->cmnd; | |
2950cefa | 3735 | u8 all, sa; |
27708a95 HR |
3736 | u64 block; |
3737 | u32 n_block; | |
3738 | u16 fp = (u16)-1; | |
3739 | ||
3740 | if (unlikely(scmd->cmd_len < 16)) { | |
3741 | fp = 15; | |
3742 | goto invalid_fld; | |
3743 | } | |
3744 | ||
3745 | sa = cdb[1] & 0x1f; | |
3746 | if ((sa != ZO_CLOSE_ZONE) && (sa != ZO_FINISH_ZONE) && | |
3747 | (sa != ZO_OPEN_ZONE) && (sa != ZO_RESET_WRITE_POINTER)) { | |
3748 | fp = 1; | |
3749 | goto invalid_fld; | |
3750 | } | |
3751 | ||
3752 | scsi_16_lba_len(cdb, &block, &n_block); | |
3753 | if (n_block) { | |
3754 | /* | |
3755 | * ZAC MANAGEMENT OUT doesn't define any length | |
3756 | */ | |
3757 | goto invalid_param_len; | |
3758 | } | |
3759 | if (block > dev->n_sectors) | |
3760 | goto out_of_range; | |
3761 | ||
2950cefa | 3762 | all = cdb[14] & 0x1; |
27708a95 | 3763 | |
284b3b77 HR |
3764 | if (ata_ncq_enabled(qc->dev) && |
3765 | ata_fpdma_zac_mgmt_out_supported(qc->dev)) { | |
5b844b63 | 3766 | tf->protocol = ATA_PROT_NCQ_NODATA; |
284b3b77 | 3767 | tf->command = ATA_CMD_NCQ_NON_DATA; |
ee194b75 | 3768 | tf->feature = ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT; |
284b3b77 | 3769 | tf->nsect = qc->tag << 3; |
2950cefa | 3770 | tf->auxiliary = sa | ((u16)all << 8); |
284b3b77 HR |
3771 | } else { |
3772 | tf->protocol = ATA_PROT_NODATA; | |
3773 | tf->command = ATA_CMD_ZAC_MGMT_OUT; | |
3774 | tf->feature = sa; | |
2950cefa | 3775 | tf->hob_feature = all; |
284b3b77 | 3776 | } |
27708a95 HR |
3777 | tf->lbah = (block >> 16) & 0xff; |
3778 | tf->lbam = (block >> 8) & 0xff; | |
3779 | tf->lbal = block & 0xff; | |
3780 | tf->hob_lbah = (block >> 40) & 0xff; | |
3781 | tf->hob_lbam = (block >> 32) & 0xff; | |
3782 | tf->hob_lbal = (block >> 24) & 0xff; | |
3783 | tf->device = ATA_LBA; | |
3784 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48; | |
3785 | ||
3786 | return 0; | |
3787 | ||
18f0f978 | 3788 | invalid_fld: |
27708a95 HR |
3789 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
3790 | return 1; | |
3791 | out_of_range: | |
3792 | /* "Logical Block Address out of range" */ | |
3793 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x00); | |
3794 | return 1; | |
3795 | invalid_param_len: | |
3796 | /* "Parameter list length error" */ | |
3797 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
18f0f978 CH |
3798 | return 1; |
3799 | } | |
3800 | ||
1b26d29c PB |
3801 | /** |
3802 | * ata_mselect_caching - Simulate MODE SELECT for caching info page | |
3803 | * @qc: Storage for translated ATA taskfile | |
3804 | * @buf: input buffer | |
3805 | * @len: number of valid bytes in the input buffer | |
7780081c | 3806 | * @fp: out parameter for the failed field on error |
1b26d29c PB |
3807 | * |
3808 | * Prepare a taskfile to modify caching information for the device. | |
3809 | * | |
3810 | * LOCKING: | |
3811 | * None. | |
3812 | */ | |
3813 | static int ata_mselect_caching(struct ata_queued_cmd *qc, | |
7780081c | 3814 | const u8 *buf, int len, u16 *fp) |
1b26d29c PB |
3815 | { |
3816 | struct ata_taskfile *tf = &qc->tf; | |
3817 | struct ata_device *dev = qc->dev; | |
d7372cb6 | 3818 | u8 mpage[CACHE_MPAGE_LEN]; |
1b26d29c | 3819 | u8 wce; |
7780081c | 3820 | int i; |
1b26d29c PB |
3821 | |
3822 | /* | |
3823 | * The first two bytes of def_cache_mpage are a header, so offsets | |
3824 | * in mpage are off by 2 compared to buf. Same for len. | |
3825 | */ | |
3826 | ||
7780081c HR |
3827 | if (len != CACHE_MPAGE_LEN - 2) { |
3828 | if (len < CACHE_MPAGE_LEN - 2) | |
3829 | *fp = len; | |
3830 | else | |
3831 | *fp = CACHE_MPAGE_LEN - 2; | |
1b26d29c | 3832 | return -EINVAL; |
7780081c | 3833 | } |
1b26d29c PB |
3834 | |
3835 | wce = buf[0] & (1 << 2); | |
3836 | ||
3837 | /* | |
3838 | * Check that read-only bits are not modified. | |
3839 | */ | |
3840 | ata_msense_caching(dev->id, mpage, false); | |
7780081c HR |
3841 | for (i = 0; i < CACHE_MPAGE_LEN - 2; i++) { |
3842 | if (i == 0) | |
3843 | continue; | |
3844 | if (mpage[i + 2] != buf[i]) { | |
3845 | *fp = i; | |
3846 | return -EINVAL; | |
3847 | } | |
3848 | } | |
1b26d29c PB |
3849 | |
3850 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; | |
3851 | tf->protocol = ATA_PROT_NODATA; | |
3852 | tf->nsect = 0; | |
3853 | tf->command = ATA_CMD_SET_FEATURES; | |
3854 | tf->feature = wce ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF; | |
3855 | return 0; | |
3856 | } | |
3857 | ||
06dbde5f HR |
3858 | /** |
3859 | * ata_mselect_control - Simulate MODE SELECT for control page | |
3860 | * @qc: Storage for translated ATA taskfile | |
3861 | * @buf: input buffer | |
3862 | * @len: number of valid bytes in the input buffer | |
7780081c | 3863 | * @fp: out parameter for the failed field on error |
06dbde5f HR |
3864 | * |
3865 | * Prepare a taskfile to modify caching information for the device. | |
3866 | * | |
3867 | * LOCKING: | |
3868 | * None. | |
3869 | */ | |
3870 | static int ata_mselect_control(struct ata_queued_cmd *qc, | |
7780081c | 3871 | const u8 *buf, int len, u16 *fp) |
06dbde5f HR |
3872 | { |
3873 | struct ata_device *dev = qc->dev; | |
d7372cb6 | 3874 | u8 mpage[CONTROL_MPAGE_LEN]; |
06dbde5f | 3875 | u8 d_sense; |
7780081c | 3876 | int i; |
06dbde5f HR |
3877 | |
3878 | /* | |
3879 | * The first two bytes of def_control_mpage are a header, so offsets | |
3880 | * in mpage are off by 2 compared to buf. Same for len. | |
3881 | */ | |
3882 | ||
7780081c HR |
3883 | if (len != CONTROL_MPAGE_LEN - 2) { |
3884 | if (len < CONTROL_MPAGE_LEN - 2) | |
3885 | *fp = len; | |
3886 | else | |
3887 | *fp = CONTROL_MPAGE_LEN - 2; | |
06dbde5f | 3888 | return -EINVAL; |
7780081c | 3889 | } |
06dbde5f HR |
3890 | |
3891 | d_sense = buf[0] & (1 << 2); | |
3892 | ||
3893 | /* | |
3894 | * Check that read-only bits are not modified. | |
3895 | */ | |
f086b748 | 3896 | ata_msense_control(dev, mpage, false); |
7780081c HR |
3897 | for (i = 0; i < CONTROL_MPAGE_LEN - 2; i++) { |
3898 | if (i == 0) | |
3899 | continue; | |
3900 | if (mpage[2 + i] != buf[i]) { | |
3901 | *fp = i; | |
3902 | return -EINVAL; | |
3903 | } | |
3904 | } | |
06dbde5f HR |
3905 | if (d_sense & (1 << 2)) |
3906 | dev->flags |= ATA_DFLAG_D_SENSE; | |
3907 | else | |
3908 | dev->flags &= ~ATA_DFLAG_D_SENSE; | |
06dbde5f HR |
3909 | return 0; |
3910 | } | |
3911 | ||
1b26d29c PB |
3912 | /** |
3913 | * ata_scsiop_mode_select - Simulate MODE SELECT 6, 10 commands | |
3914 | * @qc: Storage for translated ATA taskfile | |
3915 | * | |
3916 | * Converts a MODE SELECT command to an ATA SET FEATURES taskfile. | |
3917 | * Assume this is invoked for direct access devices (e.g. disks) only. | |
3918 | * There should be no block descriptor for other device types. | |
3919 | * | |
3920 | * LOCKING: | |
3921 | * spin_lock_irqsave(host lock) | |
3922 | */ | |
3923 | static unsigned int ata_scsi_mode_select_xlat(struct ata_queued_cmd *qc) | |
3924 | { | |
3925 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3926 | const u8 *cdb = scmd->cmnd; | |
3927 | const u8 *p; | |
3928 | u8 pg, spg; | |
3929 | unsigned six_byte, pg_len, hdr_len, bd_len; | |
3930 | int len; | |
7780081c HR |
3931 | u16 fp = (u16)-1; |
3932 | u8 bp = 0xff; | |
1b26d29c PB |
3933 | |
3934 | VPRINTK("ENTER\n"); | |
3935 | ||
3936 | six_byte = (cdb[0] == MODE_SELECT); | |
3937 | if (six_byte) { | |
bcfc867d HR |
3938 | if (scmd->cmd_len < 5) { |
3939 | fp = 4; | |
1b26d29c | 3940 | goto invalid_fld; |
bcfc867d | 3941 | } |
1b26d29c PB |
3942 | |
3943 | len = cdb[4]; | |
3944 | hdr_len = 4; | |
3945 | } else { | |
bcfc867d HR |
3946 | if (scmd->cmd_len < 9) { |
3947 | fp = 8; | |
1b26d29c | 3948 | goto invalid_fld; |
bcfc867d | 3949 | } |
1b26d29c PB |
3950 | |
3951 | len = (cdb[7] << 8) + cdb[8]; | |
3952 | hdr_len = 8; | |
3953 | } | |
3954 | ||
3955 | /* We only support PF=1, SP=0. */ | |
bcfc867d HR |
3956 | if ((cdb[1] & 0x11) != 0x10) { |
3957 | fp = 1; | |
0df10b84 | 3958 | bp = (cdb[1] & 0x01) ? 1 : 5; |
1b26d29c | 3959 | goto invalid_fld; |
bcfc867d | 3960 | } |
1b26d29c PB |
3961 | |
3962 | /* Test early for possible overrun. */ | |
3963 | if (!scsi_sg_count(scmd) || scsi_sglist(scmd)->length < len) | |
3964 | goto invalid_param_len; | |
3965 | ||
3966 | p = page_address(sg_page(scsi_sglist(scmd))); | |
3967 | ||
3968 | /* Move past header and block descriptors. */ | |
3969 | if (len < hdr_len) | |
3970 | goto invalid_param_len; | |
3971 | ||
3972 | if (six_byte) | |
3973 | bd_len = p[3]; | |
3974 | else | |
3975 | bd_len = (p[6] << 8) + p[7]; | |
3976 | ||
3977 | len -= hdr_len; | |
3978 | p += hdr_len; | |
3979 | if (len < bd_len) | |
3980 | goto invalid_param_len; | |
7780081c HR |
3981 | if (bd_len != 0 && bd_len != 8) { |
3982 | fp = (six_byte) ? 3 : 6; | |
3983 | fp += bd_len + hdr_len; | |
1b26d29c | 3984 | goto invalid_param; |
7780081c | 3985 | } |
1b26d29c PB |
3986 | |
3987 | len -= bd_len; | |
3988 | p += bd_len; | |
3989 | if (len == 0) | |
3990 | goto skip; | |
3991 | ||
3992 | /* Parse both possible formats for the mode page headers. */ | |
3993 | pg = p[0] & 0x3f; | |
3994 | if (p[0] & 0x40) { | |
3995 | if (len < 4) | |
3996 | goto invalid_param_len; | |
3997 | ||
3998 | spg = p[1]; | |
3999 | pg_len = (p[2] << 8) | p[3]; | |
4000 | p += 4; | |
4001 | len -= 4; | |
4002 | } else { | |
4003 | if (len < 2) | |
4004 | goto invalid_param_len; | |
4005 | ||
4006 | spg = 0; | |
4007 | pg_len = p[1]; | |
4008 | p += 2; | |
4009 | len -= 2; | |
4010 | } | |
4011 | ||
4012 | /* | |
4013 | * No mode subpages supported (yet) but asking for _all_ | |
4014 | * subpages may be valid | |
4015 | */ | |
7780081c HR |
4016 | if (spg && (spg != ALL_SUB_MPAGES)) { |
4017 | fp = (p[0] & 0x40) ? 1 : 0; | |
4018 | fp += hdr_len + bd_len; | |
1b26d29c | 4019 | goto invalid_param; |
7780081c | 4020 | } |
1b26d29c PB |
4021 | if (pg_len > len) |
4022 | goto invalid_param_len; | |
4023 | ||
4024 | switch (pg) { | |
4025 | case CACHE_MPAGE: | |
7780081c HR |
4026 | if (ata_mselect_caching(qc, p, pg_len, &fp) < 0) { |
4027 | fp += hdr_len + bd_len; | |
1b26d29c | 4028 | goto invalid_param; |
7780081c | 4029 | } |
1b26d29c | 4030 | break; |
06dbde5f | 4031 | case CONTROL_MPAGE: |
7780081c HR |
4032 | if (ata_mselect_control(qc, p, pg_len, &fp) < 0) { |
4033 | fp += hdr_len + bd_len; | |
06dbde5f | 4034 | goto invalid_param; |
535fd072 TY |
4035 | } else { |
4036 | goto skip; /* No ATA command to send */ | |
7780081c | 4037 | } |
1b26d29c | 4038 | break; |
1b26d29c | 4039 | default: /* invalid page code */ |
7780081c | 4040 | fp = bd_len + hdr_len; |
1b26d29c PB |
4041 | goto invalid_param; |
4042 | } | |
4043 | ||
4044 | /* | |
4045 | * Only one page has changeable data, so we only support setting one | |
4046 | * page at a time. | |
4047 | */ | |
4048 | if (len > pg_len) | |
4049 | goto invalid_param; | |
4050 | ||
4051 | return 0; | |
4052 | ||
4053 | invalid_fld: | |
0df10b84 | 4054 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); |
1b26d29c PB |
4055 | return 1; |
4056 | ||
4057 | invalid_param: | |
7780081c | 4058 | ata_scsi_set_invalid_parameter(qc->dev, scmd, fp); |
1b26d29c PB |
4059 | return 1; |
4060 | ||
4061 | invalid_param_len: | |
4062 | /* "Parameter list length error" */ | |
06dbde5f | 4063 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); |
1b26d29c PB |
4064 | return 1; |
4065 | ||
4066 | skip: | |
4067 | scmd->result = SAM_STAT_GOOD; | |
4068 | return 1; | |
4069 | } | |
4070 | ||
1da177e4 LT |
4071 | /** |
4072 | * ata_get_xlat_func - check if SCSI to ATA translation is possible | |
4073 | * @dev: ATA device | |
4074 | * @cmd: SCSI command opcode to consider | |
4075 | * | |
4076 | * Look up the SCSI command given, and determine whether the | |
4077 | * SCSI command is to be translated or simulated. | |
4078 | * | |
4079 | * RETURNS: | |
4080 | * Pointer to translation function if possible, %NULL if not. | |
4081 | */ | |
4082 | ||
4083 | static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd) | |
4084 | { | |
4085 | switch (cmd) { | |
4086 | case READ_6: | |
4087 | case READ_10: | |
4088 | case READ_16: | |
4089 | ||
4090 | case WRITE_6: | |
4091 | case WRITE_10: | |
4092 | case WRITE_16: | |
4093 | return ata_scsi_rw_xlat; | |
4094 | ||
0cdd6eb7 | 4095 | case WRITE_SAME_16: |
18f0f978 CH |
4096 | return ata_scsi_write_same_xlat; |
4097 | ||
1da177e4 LT |
4098 | case SYNCHRONIZE_CACHE: |
4099 | if (ata_try_flush_cache(dev)) | |
4100 | return ata_scsi_flush_xlat; | |
4101 | break; | |
4102 | ||
4103 | case VERIFY: | |
4104 | case VERIFY_16: | |
4105 | return ata_scsi_verify_xlat; | |
b095518e JG |
4106 | |
4107 | case ATA_12: | |
4108 | case ATA_16: | |
4109 | return ata_scsi_pass_thru; | |
da61396d | 4110 | |
1b26d29c PB |
4111 | case MODE_SELECT: |
4112 | case MODE_SELECT_10: | |
4113 | return ata_scsi_mode_select_xlat; | |
4114 | break; | |
4115 | ||
28a3fc22 HR |
4116 | case ZBC_IN: |
4117 | return ata_scsi_zbc_in_xlat; | |
4118 | ||
27708a95 HR |
4119 | case ZBC_OUT: |
4120 | return ata_scsi_zbc_out_xlat; | |
4121 | ||
972dcafb DG |
4122 | case START_STOP: |
4123 | return ata_scsi_start_stop_xlat; | |
1da177e4 LT |
4124 | } |
4125 | ||
4126 | return NULL; | |
4127 | } | |
4128 | ||
4129 | /** | |
4130 | * ata_scsi_dump_cdb - dump SCSI command contents to dmesg | |
4131 | * @ap: ATA port to which the command was being sent | |
4132 | * @cmd: SCSI command to dump | |
4133 | * | |
4134 | * Prints the contents of a SCSI command via printk(). | |
4135 | */ | |
4136 | ||
4137 | static inline void ata_scsi_dump_cdb(struct ata_port *ap, | |
4138 | struct scsi_cmnd *cmd) | |
4139 | { | |
4140 | #ifdef ATA_DEBUG | |
4141 | struct scsi_device *scsidev = cmd->device; | |
1da177e4 | 4142 | |
26f58830 | 4143 | DPRINTK("CDB (%u:%d,%d,%d) %9ph\n", |
44877b4e | 4144 | ap->print_id, |
1da177e4 | 4145 | scsidev->channel, scsidev->id, scsidev->lun, |
26f58830 | 4146 | cmd->cmnd); |
1da177e4 LT |
4147 | #endif |
4148 | } | |
4149 | ||
542b1444 | 4150 | static inline int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, |
2115ea94 | 4151 | struct ata_device *dev) |
eb3f0f9c | 4152 | { |
baf4fdfa ML |
4153 | u8 scsi_op = scmd->cmnd[0]; |
4154 | ata_xlat_func_t xlat_func; | |
2115ea94 TH |
4155 | int rc = 0; |
4156 | ||
9162c657 | 4157 | if (dev->class == ATA_DEV_ATA || dev->class == ATA_DEV_ZAC) { |
baf4fdfa ML |
4158 | if (unlikely(!scmd->cmd_len || scmd->cmd_len > dev->cdb_len)) |
4159 | goto bad_cdb_len; | |
eb3f0f9c | 4160 | |
baf4fdfa ML |
4161 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
4162 | } else { | |
4163 | if (unlikely(!scmd->cmd_len)) | |
4164 | goto bad_cdb_len; | |
4165 | ||
4166 | xlat_func = NULL; | |
4167 | if (likely((scsi_op != ATA_16) || !atapi_passthru16)) { | |
4168 | /* relay SCSI command to ATAPI device */ | |
607126c2 ML |
4169 | int len = COMMAND_SIZE(scsi_op); |
4170 | if (unlikely(len > scmd->cmd_len || len > dev->cdb_len)) | |
baf4fdfa ML |
4171 | goto bad_cdb_len; |
4172 | ||
4173 | xlat_func = atapi_xlat; | |
4174 | } else { | |
4175 | /* ATA_16 passthru, treat as an ATA command */ | |
4176 | if (unlikely(scmd->cmd_len > 16)) | |
4177 | goto bad_cdb_len; | |
4178 | ||
4179 | xlat_func = ata_get_xlat_func(dev, scsi_op); | |
4180 | } | |
4181 | } | |
4182 | ||
4183 | if (xlat_func) | |
b27dcfb0 | 4184 | rc = ata_scsi_translate(dev, scmd, xlat_func); |
baf4fdfa | 4185 | else |
b27dcfb0 | 4186 | ata_scsi_simulate(dev, scmd); |
2115ea94 TH |
4187 | |
4188 | return rc; | |
baf4fdfa ML |
4189 | |
4190 | bad_cdb_len: | |
4191 | DPRINTK("bad CDB len=%u, scsi_op=0x%02x, max=%u\n", | |
4192 | scmd->cmd_len, scsi_op, dev->cdb_len); | |
4193 | scmd->result = DID_ERROR << 16; | |
b27dcfb0 | 4194 | scmd->scsi_done(scmd); |
baf4fdfa | 4195 | return 0; |
eb3f0f9c BK |
4196 | } |
4197 | ||
1da177e4 LT |
4198 | /** |
4199 | * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device | |
23e701e6 | 4200 | * @shost: SCSI host of command to be sent |
1da177e4 | 4201 | * @cmd: SCSI command to be sent |
1da177e4 LT |
4202 | * |
4203 | * In some cases, this function translates SCSI commands into | |
4204 | * ATA taskfiles, and queues the taskfiles to be sent to | |
4205 | * hardware. In other cases, this function simulates a | |
4206 | * SCSI device by evaluating and responding to certain | |
4207 | * SCSI commands. This creates the overall effect of | |
4208 | * ATA and ATAPI devices appearing as SCSI devices. | |
4209 | * | |
4210 | * LOCKING: | |
23e701e6 | 4211 | * ATA host lock |
1da177e4 LT |
4212 | * |
4213 | * RETURNS: | |
2115ea94 TH |
4214 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
4215 | * 0 otherwise. | |
1da177e4 | 4216 | */ |
23e701e6 | 4217 | int ata_scsi_queuecmd(struct Scsi_Host *shost, struct scsi_cmnd *cmd) |
1da177e4 LT |
4218 | { |
4219 | struct ata_port *ap; | |
4220 | struct ata_device *dev; | |
4221 | struct scsi_device *scsidev = cmd->device; | |
2115ea94 | 4222 | int rc = 0; |
23e701e6 | 4223 | unsigned long irq_flags; |
1da177e4 | 4224 | |
35bb94b1 | 4225 | ap = ata_shost_to_port(shost); |
005a5a06 | 4226 | |
23e701e6 | 4227 | spin_lock_irqsave(ap->lock, irq_flags); |
1da177e4 LT |
4228 | |
4229 | ata_scsi_dump_cdb(ap, cmd); | |
4230 | ||
4231 | dev = ata_scsi_find_dev(ap, scsidev); | |
eb3f0f9c | 4232 | if (likely(dev)) |
b27dcfb0 | 4233 | rc = __ata_scsi_queuecmd(cmd, dev); |
eb3f0f9c | 4234 | else { |
1da177e4 | 4235 | cmd->result = (DID_BAD_TARGET << 16); |
23e701e6 | 4236 | cmd->scsi_done(cmd); |
1da177e4 LT |
4237 | } |
4238 | ||
23e701e6 JG |
4239 | spin_unlock_irqrestore(ap->lock, irq_flags); |
4240 | ||
2115ea94 | 4241 | return rc; |
1da177e4 LT |
4242 | } |
4243 | ||
4244 | /** | |
4245 | * ata_scsi_simulate - simulate SCSI command on ATA device | |
c893a3ae | 4246 | * @dev: the target device |
1da177e4 | 4247 | * @cmd: SCSI command being sent to device. |
1da177e4 LT |
4248 | * |
4249 | * Interprets and directly executes a select list of SCSI commands | |
4250 | * that can be handled internally. | |
4251 | * | |
4252 | * LOCKING: | |
cca3974e | 4253 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
4254 | */ |
4255 | ||
b27dcfb0 | 4256 | void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd) |
1da177e4 LT |
4257 | { |
4258 | struct ata_scsi_args args; | |
057ace5e | 4259 | const u8 *scsicmd = cmd->cmnd; |
45394145 | 4260 | u8 tmp8; |
1da177e4 | 4261 | |
9a3dccc4 TH |
4262 | args.dev = dev; |
4263 | args.id = dev->id; | |
1da177e4 | 4264 | args.cmd = cmd; |
1da177e4 LT |
4265 | |
4266 | switch(scsicmd[0]) { | |
2dcb407e | 4267 | case INQUIRY: |
bcfc867d | 4268 | if (scsicmd[1] & 2) /* is CmdDt set? */ |
8fc6c065 | 4269 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e JG |
4270 | else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */ |
4271 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std); | |
4272 | else switch (scsicmd[2]) { | |
4273 | case 0x00: | |
4274 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00); | |
1da177e4 | 4275 | break; |
2dcb407e JG |
4276 | case 0x80: |
4277 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80); | |
1da177e4 | 4278 | break; |
2dcb407e JG |
4279 | case 0x83: |
4280 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83); | |
1da177e4 | 4281 | break; |
2dcb407e JG |
4282 | case 0x89: |
4283 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89); | |
4284 | break; | |
18f0f978 CH |
4285 | case 0xb0: |
4286 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b0); | |
4287 | break; | |
1e9dbc92 MW |
4288 | case 0xb1: |
4289 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1); | |
4290 | break; | |
02e0a604 MP |
4291 | case 0xb2: |
4292 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b2); | |
4293 | break; | |
6d1003ae HR |
4294 | case 0xb6: |
4295 | if (dev->flags & ATA_DFLAG_ZAC) { | |
4296 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b6); | |
4297 | break; | |
4298 | } | |
4299 | /* Fallthrough */ | |
2dcb407e | 4300 | default: |
8fc6c065 | 4301 | ata_scsi_set_invalid_field(dev, cmd, 2, 0xff); |
1da177e4 | 4302 | break; |
2dcb407e JG |
4303 | } |
4304 | break; | |
4305 | ||
4306 | case MODE_SENSE: | |
4307 | case MODE_SENSE_10: | |
4308 | ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense); | |
4309 | break; | |
4310 | ||
2dcb407e JG |
4311 | case READ_CAPACITY: |
4312 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); | |
4313 | break; | |
4314 | ||
eb846d9f | 4315 | case SERVICE_ACTION_IN_16: |
2dcb407e | 4316 | if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16) |
1da177e4 | 4317 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
2dcb407e | 4318 | else |
8fc6c065 | 4319 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e | 4320 | break; |
1da177e4 | 4321 | |
2dcb407e JG |
4322 | case REPORT_LUNS: |
4323 | ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns); | |
4324 | break; | |
1da177e4 | 4325 | |
2dcb407e | 4326 | case REQUEST_SENSE: |
06dbde5f | 4327 | ata_scsi_set_sense(dev, cmd, 0, 0, 0); |
2dcb407e | 4328 | cmd->result = (DRIVER_SENSE << 24); |
2dcb407e | 4329 | break; |
1da177e4 | 4330 | |
2dcb407e JG |
4331 | /* if we reach this, then writeback caching is disabled, |
4332 | * turning this into a no-op. | |
4333 | */ | |
4334 | case SYNCHRONIZE_CACHE: | |
4335 | /* fall through */ | |
4336 | ||
4337 | /* no-op's, complete with success */ | |
4338 | case REZERO_UNIT: | |
4339 | case SEEK_6: | |
4340 | case SEEK_10: | |
4341 | case TEST_UNIT_READY: | |
2dcb407e | 4342 | break; |
45394145 | 4343 | |
2dcb407e JG |
4344 | case SEND_DIAGNOSTIC: |
4345 | tmp8 = scsicmd[1] & ~(1 << 3); | |
a0c0b0e9 | 4346 | if (tmp8 != 0x4 || scsicmd[3] || scsicmd[4]) |
8fc6c065 | 4347 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e | 4348 | break; |
1da177e4 | 4349 | |
7b203094 ST |
4350 | case MAINTENANCE_IN: |
4351 | if (scsicmd[1] == MI_REPORT_SUPPORTED_OPERATION_CODES) | |
4352 | ata_scsi_rbuf_fill(&args, ata_scsiop_maint_in); | |
4353 | else | |
8fc6c065 | 4354 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
7b203094 ST |
4355 | break; |
4356 | ||
2dcb407e JG |
4357 | /* all other commands */ |
4358 | default: | |
06dbde5f | 4359 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x20, 0x0); |
2dcb407e | 4360 | /* "Invalid command operation code" */ |
2dcb407e | 4361 | break; |
1da177e4 | 4362 | } |
8fc6c065 CH |
4363 | |
4364 | cmd->scsi_done(cmd); | |
1da177e4 LT |
4365 | } |
4366 | ||
f3187195 TH |
4367 | int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht) |
4368 | { | |
4369 | int i, rc; | |
4370 | ||
4371 | for (i = 0; i < host->n_ports; i++) { | |
4372 | struct ata_port *ap = host->ports[i]; | |
4373 | struct Scsi_Host *shost; | |
4374 | ||
4375 | rc = -ENOMEM; | |
4376 | shost = scsi_host_alloc(sht, sizeof(struct ata_port *)); | |
4377 | if (!shost) | |
4378 | goto err_alloc; | |
4379 | ||
9ee4f393 | 4380 | shost->eh_noresume = 1; |
f3187195 TH |
4381 | *(struct ata_port **)&shost->hostdata[0] = ap; |
4382 | ap->scsi_host = shost; | |
4383 | ||
d9027470 | 4384 | shost->transportt = ata_scsi_transport_template; |
f3187195 TH |
4385 | shost->unique_id = ap->print_id; |
4386 | shost->max_id = 16; | |
4387 | shost->max_lun = 1; | |
4388 | shost->max_channel = 1; | |
4389 | shost->max_cmd_len = 16; | |
4390 | ||
31cc23b3 TH |
4391 | /* Schedule policy is determined by ->qc_defer() |
4392 | * callback and it needs to see every deferred qc. | |
4393 | * Set host_blocked to 1 to prevent SCSI midlayer from | |
4394 | * automatically deferring requests. | |
4395 | */ | |
4396 | shost->max_host_blocked = 1; | |
4397 | ||
f8fc75dc LM |
4398 | rc = scsi_add_host_with_dma(ap->scsi_host, |
4399 | &ap->tdev, ap->host->dev); | |
f3187195 TH |
4400 | if (rc) |
4401 | goto err_add; | |
4402 | } | |
4403 | ||
4404 | return 0; | |
4405 | ||
4406 | err_add: | |
4407 | scsi_host_put(host->ports[i]->scsi_host); | |
4408 | err_alloc: | |
4409 | while (--i >= 0) { | |
4410 | struct Scsi_Host *shost = host->ports[i]->scsi_host; | |
4411 | ||
4412 | scsi_remove_host(shost); | |
4413 | scsi_host_put(shost); | |
4414 | } | |
4415 | return rc; | |
4416 | } | |
4417 | ||
1ae46317 | 4418 | void ata_scsi_scan_host(struct ata_port *ap, int sync) |
644dd0cc | 4419 | { |
1ae46317 TH |
4420 | int tries = 5; |
4421 | struct ata_device *last_failed_dev = NULL; | |
41bda9c9 | 4422 | struct ata_link *link; |
1ae46317 | 4423 | struct ata_device *dev; |
644dd0cc | 4424 | |
1ae46317 | 4425 | repeat: |
1eca4365 TH |
4426 | ata_for_each_link(link, ap, EDGE) { |
4427 | ata_for_each_dev(dev, link, ENABLED) { | |
41bda9c9 TH |
4428 | struct scsi_device *sdev; |
4429 | int channel = 0, id = 0; | |
3edebac4 | 4430 | |
1eca4365 | 4431 | if (dev->sdev) |
41bda9c9 | 4432 | continue; |
3f19ee8c | 4433 | |
41bda9c9 TH |
4434 | if (ata_is_host_link(link)) |
4435 | id = dev->devno; | |
4436 | else | |
4437 | channel = link->pmp; | |
4438 | ||
4439 | sdev = __scsi_add_device(ap->scsi_host, channel, id, 0, | |
4440 | NULL); | |
4441 | if (!IS_ERR(sdev)) { | |
4442 | dev->sdev = sdev; | |
4443 | scsi_device_put(sdev); | |
295124dc GG |
4444 | } else { |
4445 | dev->sdev = NULL; | |
41bda9c9 | 4446 | } |
3edebac4 | 4447 | } |
3f19ee8c | 4448 | } |
1ae46317 TH |
4449 | |
4450 | /* If we scanned while EH was in progress or allocation | |
4451 | * failure occurred, scan would have failed silently. Check | |
4452 | * whether all devices are attached. | |
4453 | */ | |
1eca4365 TH |
4454 | ata_for_each_link(link, ap, EDGE) { |
4455 | ata_for_each_dev(dev, link, ENABLED) { | |
4456 | if (!dev->sdev) | |
41bda9c9 TH |
4457 | goto exit_loop; |
4458 | } | |
1ae46317 | 4459 | } |
41bda9c9 TH |
4460 | exit_loop: |
4461 | if (!link) | |
1ae46317 TH |
4462 | return; |
4463 | ||
4464 | /* we're missing some SCSI devices */ | |
4465 | if (sync) { | |
4466 | /* If caller requested synchrnous scan && we've made | |
4467 | * any progress, sleep briefly and repeat. | |
4468 | */ | |
4469 | if (dev != last_failed_dev) { | |
4470 | msleep(100); | |
4471 | last_failed_dev = dev; | |
4472 | goto repeat; | |
4473 | } | |
4474 | ||
4475 | /* We might be failing to detect boot device, give it | |
4476 | * a few more chances. | |
4477 | */ | |
4478 | if (--tries) { | |
4479 | msleep(100); | |
4480 | goto repeat; | |
4481 | } | |
4482 | ||
a9a79dfe JP |
4483 | ata_port_err(ap, |
4484 | "WARNING: synchronous SCSI scan failed without making any progress, switching to async\n"); | |
1ae46317 TH |
4485 | } |
4486 | ||
ad72cf98 | 4487 | queue_delayed_work(system_long_wq, &ap->hotplug_task, |
1ae46317 | 4488 | round_jiffies_relative(HZ)); |
644dd0cc | 4489 | } |
0ea035a3 TH |
4490 | |
4491 | /** | |
4492 | * ata_scsi_offline_dev - offline attached SCSI device | |
4493 | * @dev: ATA device to offline attached SCSI device for | |
4494 | * | |
4495 | * This function is called from ata_eh_hotplug() and responsible | |
4496 | * for taking the SCSI device attached to @dev offline. This | |
cca3974e | 4497 | * function is called with host lock which protects dev->sdev |
0ea035a3 TH |
4498 | * against clearing. |
4499 | * | |
4500 | * LOCKING: | |
cca3974e | 4501 | * spin_lock_irqsave(host lock) |
0ea035a3 TH |
4502 | * |
4503 | * RETURNS: | |
4504 | * 1 if attached SCSI device exists, 0 otherwise. | |
4505 | */ | |
4506 | int ata_scsi_offline_dev(struct ata_device *dev) | |
4507 | { | |
4508 | if (dev->sdev) { | |
4509 | scsi_device_set_state(dev->sdev, SDEV_OFFLINE); | |
4510 | return 1; | |
4511 | } | |
4512 | return 0; | |
4513 | } | |
580b2102 TH |
4514 | |
4515 | /** | |
4516 | * ata_scsi_remove_dev - remove attached SCSI device | |
4517 | * @dev: ATA device to remove attached SCSI device for | |
4518 | * | |
4519 | * This function is called from ata_eh_scsi_hotplug() and | |
4520 | * responsible for removing the SCSI device attached to @dev. | |
4521 | * | |
4522 | * LOCKING: | |
4523 | * Kernel thread context (may sleep). | |
4524 | */ | |
4525 | static void ata_scsi_remove_dev(struct ata_device *dev) | |
4526 | { | |
9af5c9c9 | 4527 | struct ata_port *ap = dev->link->ap; |
580b2102 TH |
4528 | struct scsi_device *sdev; |
4529 | unsigned long flags; | |
4530 | ||
4531 | /* Alas, we need to grab scan_mutex to ensure SCSI device | |
4532 | * state doesn't change underneath us and thus | |
4533 | * scsi_device_get() always succeeds. The mutex locking can | |
4534 | * be removed if there is __scsi_device_get() interface which | |
4535 | * increments reference counts regardless of device state. | |
4536 | */ | |
cca3974e | 4537 | mutex_lock(&ap->scsi_host->scan_mutex); |
ba6a1308 | 4538 | spin_lock_irqsave(ap->lock, flags); |
580b2102 | 4539 | |
cca3974e | 4540 | /* clearing dev->sdev is protected by host lock */ |
580b2102 TH |
4541 | sdev = dev->sdev; |
4542 | dev->sdev = NULL; | |
4543 | ||
4544 | if (sdev) { | |
4545 | /* If user initiated unplug races with us, sdev can go | |
cca3974e | 4546 | * away underneath us after the host lock and |
580b2102 TH |
4547 | * scan_mutex are released. Hold onto it. |
4548 | */ | |
4549 | if (scsi_device_get(sdev) == 0) { | |
4550 | /* The following ensures the attached sdev is | |
4551 | * offline on return from ata_scsi_offline_dev() | |
4552 | * regardless it wins or loses the race | |
4553 | * against this function. | |
4554 | */ | |
4555 | scsi_device_set_state(sdev, SDEV_OFFLINE); | |
4556 | } else { | |
4557 | WARN_ON(1); | |
4558 | sdev = NULL; | |
4559 | } | |
4560 | } | |
4561 | ||
ba6a1308 | 4562 | spin_unlock_irqrestore(ap->lock, flags); |
cca3974e | 4563 | mutex_unlock(&ap->scsi_host->scan_mutex); |
580b2102 TH |
4564 | |
4565 | if (sdev) { | |
a9a79dfe JP |
4566 | ata_dev_info(dev, "detaching (SCSI %s)\n", |
4567 | dev_name(&sdev->sdev_gendev)); | |
580b2102 TH |
4568 | |
4569 | scsi_remove_device(sdev); | |
4570 | scsi_device_put(sdev); | |
4571 | } | |
4572 | } | |
4573 | ||
41bda9c9 TH |
4574 | static void ata_scsi_handle_link_detach(struct ata_link *link) |
4575 | { | |
4576 | struct ata_port *ap = link->ap; | |
4577 | struct ata_device *dev; | |
4578 | ||
1eca4365 | 4579 | ata_for_each_dev(dev, link, ALL) { |
41bda9c9 TH |
4580 | unsigned long flags; |
4581 | ||
4582 | if (!(dev->flags & ATA_DFLAG_DETACHED)) | |
4583 | continue; | |
4584 | ||
4585 | spin_lock_irqsave(ap->lock, flags); | |
4586 | dev->flags &= ~ATA_DFLAG_DETACHED; | |
4587 | spin_unlock_irqrestore(ap->lock, flags); | |
4588 | ||
f1bc1e4c AL |
4589 | if (zpodd_dev_enabled(dev)) |
4590 | zpodd_exit(dev); | |
4591 | ||
41bda9c9 TH |
4592 | ata_scsi_remove_dev(dev); |
4593 | } | |
4594 | } | |
4595 | ||
2f294968 KCA |
4596 | /** |
4597 | * ata_scsi_media_change_notify - send media change event | |
c5d0e6a0 | 4598 | * @dev: Pointer to the disk device with media change event |
2f294968 KCA |
4599 | * |
4600 | * Tell the block layer to send a media change notification | |
4601 | * event. | |
4602 | * | |
4603 | * LOCKING: | |
854c73a2 | 4604 | * spin_lock_irqsave(host lock) |
2f294968 | 4605 | */ |
854c73a2 | 4606 | void ata_scsi_media_change_notify(struct ata_device *dev) |
2f294968 | 4607 | { |
854c73a2 | 4608 | if (dev->sdev) |
f26792d5 JG |
4609 | sdev_evt_send_simple(dev->sdev, SDEV_EVT_MEDIA_CHANGE, |
4610 | GFP_ATOMIC); | |
2f294968 | 4611 | } |
2f294968 | 4612 | |
580b2102 TH |
4613 | /** |
4614 | * ata_scsi_hotplug - SCSI part of hotplug | |
65f27f38 | 4615 | * @work: Pointer to ATA port to perform SCSI hotplug on |
580b2102 TH |
4616 | * |
4617 | * Perform SCSI part of hotplug. It's executed from a separate | |
4618 | * workqueue after EH completes. This is necessary because SCSI | |
4619 | * hot plugging requires working EH and hot unplugging is | |
4620 | * synchronized with hot plugging with a mutex. | |
4621 | * | |
4622 | * LOCKING: | |
4623 | * Kernel thread context (may sleep). | |
4624 | */ | |
65f27f38 | 4625 | void ata_scsi_hotplug(struct work_struct *work) |
580b2102 | 4626 | { |
65f27f38 DH |
4627 | struct ata_port *ap = |
4628 | container_of(work, struct ata_port, hotplug_task.work); | |
41bda9c9 | 4629 | int i; |
580b2102 | 4630 | |
b51e9e5d | 4631 | if (ap->pflags & ATA_PFLAG_UNLOADING) { |
580b2102 TH |
4632 | DPRINTK("ENTER/EXIT - unloading\n"); |
4633 | return; | |
4634 | } | |
4635 | ||
85fbd722 TH |
4636 | /* |
4637 | * XXX - UGLY HACK | |
4638 | * | |
4639 | * The block layer suspend/resume path is fundamentally broken due | |
4640 | * to freezable kthreads and workqueue and may deadlock if a block | |
4641 | * device gets removed while resume is in progress. I don't know | |
4642 | * what the solution is short of removing freezable kthreads and | |
4643 | * workqueues altogether. | |
4644 | * | |
4645 | * The following is an ugly hack to avoid kicking off device | |
4646 | * removal while freezer is active. This is a joke but does avoid | |
4647 | * this particular deadlock scenario. | |
4648 | * | |
4649 | * https://bugzilla.kernel.org/show_bug.cgi?id=62801 | |
4650 | * http://marc.info/?l=linux-kernel&m=138695698516487 | |
4651 | */ | |
4652 | #ifdef CONFIG_FREEZER | |
4653 | while (pm_freezing) | |
4654 | msleep(10); | |
4655 | #endif | |
4656 | ||
580b2102 | 4657 | DPRINTK("ENTER\n"); |
ad72cf98 | 4658 | mutex_lock(&ap->scsi_scan_mutex); |
580b2102 | 4659 | |
41bda9c9 TH |
4660 | /* Unplug detached devices. We cannot use link iterator here |
4661 | * because PMP links have to be scanned even if PMP is | |
4662 | * currently not attached. Iterate manually. | |
4663 | */ | |
4664 | ata_scsi_handle_link_detach(&ap->link); | |
4665 | if (ap->pmp_link) | |
4666 | for (i = 0; i < SATA_PMP_MAX_PORTS; i++) | |
4667 | ata_scsi_handle_link_detach(&ap->pmp_link[i]); | |
580b2102 TH |
4668 | |
4669 | /* scan for new ones */ | |
1ae46317 | 4670 | ata_scsi_scan_host(ap, 0); |
580b2102 | 4671 | |
ad72cf98 | 4672 | mutex_unlock(&ap->scsi_scan_mutex); |
580b2102 TH |
4673 | DPRINTK("EXIT\n"); |
4674 | } | |
83c47bcb TH |
4675 | |
4676 | /** | |
4677 | * ata_scsi_user_scan - indication for user-initiated bus scan | |
4678 | * @shost: SCSI host to scan | |
4679 | * @channel: Channel to scan | |
4680 | * @id: ID to scan | |
4681 | * @lun: LUN to scan | |
4682 | * | |
4683 | * This function is called when user explicitly requests bus | |
4684 | * scan. Set probe pending flag and invoke EH. | |
4685 | * | |
4686 | * LOCKING: | |
4687 | * SCSI layer (we don't care) | |
4688 | * | |
4689 | * RETURNS: | |
4690 | * Zero. | |
4691 | */ | |
d9027470 | 4692 | int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, |
9cb78c16 | 4693 | unsigned int id, u64 lun) |
83c47bcb TH |
4694 | { |
4695 | struct ata_port *ap = ata_shost_to_port(shost); | |
4696 | unsigned long flags; | |
41bda9c9 | 4697 | int devno, rc = 0; |
83c47bcb TH |
4698 | |
4699 | if (!ap->ops->error_handler) | |
4700 | return -EOPNOTSUPP; | |
4701 | ||
41bda9c9 | 4702 | if (lun != SCAN_WILD_CARD && lun) |
83c47bcb TH |
4703 | return -EINVAL; |
4704 | ||
071f44b1 | 4705 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
4706 | if (channel != SCAN_WILD_CARD && channel) |
4707 | return -EINVAL; | |
4708 | devno = id; | |
4709 | } else { | |
4710 | if (id != SCAN_WILD_CARD && id) | |
4711 | return -EINVAL; | |
4712 | devno = channel; | |
4713 | } | |
4714 | ||
ba6a1308 | 4715 | spin_lock_irqsave(ap->lock, flags); |
83c47bcb | 4716 | |
41bda9c9 TH |
4717 | if (devno == SCAN_WILD_CARD) { |
4718 | struct ata_link *link; | |
4719 | ||
1eca4365 | 4720 | ata_for_each_link(link, ap, EDGE) { |
41bda9c9 | 4721 | struct ata_eh_info *ehi = &link->eh_info; |
b558eddd | 4722 | ehi->probe_mask |= ATA_ALL_DEVICES; |
cf480626 | 4723 | ehi->action |= ATA_EH_RESET; |
41bda9c9 | 4724 | } |
83c47bcb | 4725 | } else { |
41bda9c9 | 4726 | struct ata_device *dev = ata_find_dev(ap, devno); |
83c47bcb TH |
4727 | |
4728 | if (dev) { | |
41bda9c9 | 4729 | struct ata_eh_info *ehi = &dev->link->eh_info; |
9af5c9c9 | 4730 | ehi->probe_mask |= 1 << dev->devno; |
cf480626 | 4731 | ehi->action |= ATA_EH_RESET; |
83c47bcb TH |
4732 | } else |
4733 | rc = -EINVAL; | |
4734 | } | |
4735 | ||
309afcb5 | 4736 | if (rc == 0) { |
83c47bcb | 4737 | ata_port_schedule_eh(ap); |
309afcb5 TH |
4738 | spin_unlock_irqrestore(ap->lock, flags); |
4739 | ata_port_wait_eh(ap); | |
4740 | } else | |
4741 | spin_unlock_irqrestore(ap->lock, flags); | |
83c47bcb TH |
4742 | |
4743 | return rc; | |
4744 | } | |
3057ac3c | 4745 | |
4746 | /** | |
d0171269 | 4747 | * ata_scsi_dev_rescan - initiate scsi_rescan_device() |
65f27f38 | 4748 | * @work: Pointer to ATA port to perform scsi_rescan_device() |
3057ac3c | 4749 | * |
d0171269 | 4750 | * After ATA pass thru (SAT) commands are executed successfully, |
ad72cf98 | 4751 | * libata need to propagate the changes to SCSI layer. |
3057ac3c | 4752 | * |
d0171269 TH |
4753 | * LOCKING: |
4754 | * Kernel thread context (may sleep). | |
3057ac3c | 4755 | */ |
65f27f38 | 4756 | void ata_scsi_dev_rescan(struct work_struct *work) |
3057ac3c | 4757 | { |
65f27f38 DH |
4758 | struct ata_port *ap = |
4759 | container_of(work, struct ata_port, scsi_rescan_task); | |
41bda9c9 | 4760 | struct ata_link *link; |
f58229f8 | 4761 | struct ata_device *dev; |
f84e7e41 | 4762 | unsigned long flags; |
3057ac3c | 4763 | |
ad72cf98 | 4764 | mutex_lock(&ap->scsi_scan_mutex); |
f84e7e41 TH |
4765 | spin_lock_irqsave(ap->lock, flags); |
4766 | ||
1eca4365 TH |
4767 | ata_for_each_link(link, ap, EDGE) { |
4768 | ata_for_each_dev(dev, link, ENABLED) { | |
41bda9c9 | 4769 | struct scsi_device *sdev = dev->sdev; |
3057ac3c | 4770 | |
1eca4365 | 4771 | if (!sdev) |
41bda9c9 TH |
4772 | continue; |
4773 | if (scsi_device_get(sdev)) | |
4774 | continue; | |
f84e7e41 | 4775 | |
41bda9c9 TH |
4776 | spin_unlock_irqrestore(ap->lock, flags); |
4777 | scsi_rescan_device(&(sdev->sdev_gendev)); | |
4778 | scsi_device_put(sdev); | |
4779 | spin_lock_irqsave(ap->lock, flags); | |
4780 | } | |
3057ac3c | 4781 | } |
f84e7e41 TH |
4782 | |
4783 | spin_unlock_irqrestore(ap->lock, flags); | |
ad72cf98 | 4784 | mutex_unlock(&ap->scsi_scan_mutex); |
3057ac3c | 4785 | } |
80289167 BK |
4786 | |
4787 | /** | |
4788 | * ata_sas_port_alloc - Allocate port for a SAS attached SATA device | |
4f931374 | 4789 | * @host: ATA host container for all SAS ports |
80289167 | 4790 | * @port_info: Information from low-level host driver |
cca3974e | 4791 | * @shost: SCSI host that the scsi device is attached to |
80289167 BK |
4792 | * |
4793 | * LOCKING: | |
4794 | * PCI/etc. bus probe sem. | |
4795 | * | |
4796 | * RETURNS: | |
4797 | * ata_port pointer on success / NULL on failure. | |
4798 | */ | |
4799 | ||
cca3974e | 4800 | struct ata_port *ata_sas_port_alloc(struct ata_host *host, |
80289167 | 4801 | struct ata_port_info *port_info, |
cca3974e | 4802 | struct Scsi_Host *shost) |
80289167 | 4803 | { |
f3187195 | 4804 | struct ata_port *ap; |
80289167 | 4805 | |
f3187195 | 4806 | ap = ata_port_alloc(host); |
80289167 BK |
4807 | if (!ap) |
4808 | return NULL; | |
4809 | ||
f3187195 | 4810 | ap->port_no = 0; |
a29b5dad | 4811 | ap->lock = &host->lock; |
f3187195 TH |
4812 | ap->pio_mask = port_info->pio_mask; |
4813 | ap->mwdma_mask = port_info->mwdma_mask; | |
4814 | ap->udma_mask = port_info->udma_mask; | |
4815 | ap->flags |= port_info->flags; | |
4816 | ap->ops = port_info->port_ops; | |
4817 | ap->cbl = ATA_CBL_SATA; | |
4818 | ||
80289167 BK |
4819 | return ap; |
4820 | } | |
4821 | EXPORT_SYMBOL_GPL(ata_sas_port_alloc); | |
4822 | ||
4823 | /** | |
4824 | * ata_sas_port_start - Set port up for dma. | |
4825 | * @ap: Port to initialize | |
4826 | * | |
4827 | * Called just after data structures for each port are | |
dde20207 | 4828 | * initialized. |
80289167 BK |
4829 | * |
4830 | * May be used as the port_start() entry in ata_port_operations. | |
4831 | * | |
4832 | * LOCKING: | |
4833 | * Inherited from caller. | |
4834 | */ | |
4835 | int ata_sas_port_start(struct ata_port *ap) | |
4836 | { | |
3f1e046a NA |
4837 | /* |
4838 | * the port is marked as frozen at allocation time, but if we don't | |
4839 | * have new eh, we won't thaw it | |
4840 | */ | |
4841 | if (!ap->ops->error_handler) | |
4842 | ap->pflags &= ~ATA_PFLAG_FROZEN; | |
dde20207 | 4843 | return 0; |
80289167 BK |
4844 | } |
4845 | EXPORT_SYMBOL_GPL(ata_sas_port_start); | |
4846 | ||
4847 | /** | |
4848 | * ata_port_stop - Undo ata_sas_port_start() | |
4849 | * @ap: Port to shut down | |
4850 | * | |
80289167 BK |
4851 | * May be used as the port_stop() entry in ata_port_operations. |
4852 | * | |
4853 | * LOCKING: | |
4854 | * Inherited from caller. | |
4855 | */ | |
4856 | ||
4857 | void ata_sas_port_stop(struct ata_port *ap) | |
4858 | { | |
80289167 BK |
4859 | } |
4860 | EXPORT_SYMBOL_GPL(ata_sas_port_stop); | |
4861 | ||
b2024459 DW |
4862 | /** |
4863 | * ata_sas_async_probe - simply schedule probing and return | |
4864 | * @ap: Port to probe | |
4865 | * | |
4866 | * For batch scheduling of probe for sas attached ata devices, assumes | |
4867 | * the port has already been through ata_sas_port_init() | |
4868 | */ | |
4869 | void ata_sas_async_probe(struct ata_port *ap) | |
9508a66f | 4870 | { |
b2024459 DW |
4871 | __ata_port_probe(ap); |
4872 | } | |
4873 | EXPORT_SYMBOL_GPL(ata_sas_async_probe); | |
9508a66f | 4874 | |
b2024459 DW |
4875 | int ata_sas_sync_probe(struct ata_port *ap) |
4876 | { | |
4877 | return ata_port_probe(ap); | |
9508a66f | 4878 | } |
b2024459 DW |
4879 | EXPORT_SYMBOL_GPL(ata_sas_sync_probe); |
4880 | ||
9508a66f | 4881 | |
80289167 BK |
4882 | /** |
4883 | * ata_sas_port_init - Initialize a SATA device | |
4884 | * @ap: SATA port to initialize | |
4885 | * | |
4886 | * LOCKING: | |
4887 | * PCI/etc. bus probe sem. | |
4888 | * | |
4889 | * RETURNS: | |
4890 | * Zero on success, non-zero on error. | |
4891 | */ | |
4892 | ||
4893 | int ata_sas_port_init(struct ata_port *ap) | |
4894 | { | |
4895 | int rc = ap->ops->port_start(ap); | |
4896 | ||
b2024459 DW |
4897 | if (rc) |
4898 | return rc; | |
4899 | ap->print_id = atomic_inc_return(&ata_print_id); | |
4900 | return 0; | |
80289167 BK |
4901 | } |
4902 | EXPORT_SYMBOL_GPL(ata_sas_port_init); | |
4903 | ||
4904 | /** | |
4905 | * ata_sas_port_destroy - Destroy a SATA port allocated by ata_sas_port_alloc | |
4906 | * @ap: SATA port to destroy | |
4907 | * | |
4908 | */ | |
4909 | ||
4910 | void ata_sas_port_destroy(struct ata_port *ap) | |
4911 | { | |
f0d36efd TH |
4912 | if (ap->ops->port_stop) |
4913 | ap->ops->port_stop(ap); | |
80289167 BK |
4914 | kfree(ap); |
4915 | } | |
4916 | EXPORT_SYMBOL_GPL(ata_sas_port_destroy); | |
4917 | ||
4918 | /** | |
4919 | * ata_sas_slave_configure - Default slave_config routine for libata devices | |
4920 | * @sdev: SCSI device to configure | |
4921 | * @ap: ATA port to which SCSI device is attached | |
4922 | * | |
4923 | * RETURNS: | |
4924 | * Zero. | |
4925 | */ | |
4926 | ||
4927 | int ata_sas_slave_configure(struct scsi_device *sdev, struct ata_port *ap) | |
4928 | { | |
4929 | ata_scsi_sdev_config(sdev); | |
9af5c9c9 | 4930 | ata_scsi_dev_config(sdev, ap->link.device); |
80289167 BK |
4931 | return 0; |
4932 | } | |
4933 | EXPORT_SYMBOL_GPL(ata_sas_slave_configure); | |
4934 | ||
4935 | /** | |
4936 | * ata_sas_queuecmd - Issue SCSI cdb to libata-managed device | |
4937 | * @cmd: SCSI command to be sent | |
80289167 BK |
4938 | * @ap: ATA port to which the command is being sent |
4939 | * | |
4940 | * RETURNS: | |
08475a19 BK |
4941 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
4942 | * 0 otherwise. | |
80289167 BK |
4943 | */ |
4944 | ||
b27dcfb0 | 4945 | int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap) |
80289167 | 4946 | { |
08475a19 BK |
4947 | int rc = 0; |
4948 | ||
80289167 BK |
4949 | ata_scsi_dump_cdb(ap, cmd); |
4950 | ||
2486fa56 | 4951 | if (likely(ata_dev_enabled(ap->link.device))) |
b27dcfb0 | 4952 | rc = __ata_scsi_queuecmd(cmd, ap->link.device); |
80289167 BK |
4953 | else { |
4954 | cmd->result = (DID_BAD_TARGET << 16); | |
b27dcfb0 | 4955 | cmd->scsi_done(cmd); |
80289167 | 4956 | } |
08475a19 | 4957 | return rc; |
80289167 BK |
4958 | } |
4959 | EXPORT_SYMBOL_GPL(ata_sas_queuecmd); | |
98bd4be1 SL |
4960 | |
4961 | int ata_sas_allocate_tag(struct ata_port *ap) | |
4962 | { | |
4963 | unsigned int max_queue = ap->host->n_tags; | |
4964 | unsigned int i, tag; | |
4965 | ||
4966 | for (i = 0, tag = ap->sas_last_tag + 1; i < max_queue; i++, tag++) { | |
3a028243 | 4967 | tag = tag < max_queue ? tag : 0; |
98bd4be1 SL |
4968 | |
4969 | /* the last tag is reserved for internal command. */ | |
4970 | if (tag == ATA_TAG_INTERNAL) | |
4971 | continue; | |
4972 | ||
4973 | if (!test_and_set_bit(tag, &ap->sas_tag_allocated)) { | |
4974 | ap->sas_last_tag = tag; | |
4975 | return tag; | |
4976 | } | |
4977 | } | |
4978 | return -1; | |
4979 | } | |
4980 | ||
4981 | void ata_sas_free_tag(unsigned int tag, struct ata_port *ap) | |
4982 | { | |
4983 | clear_bit(tag, &ap->sas_tag_allocated); | |
4984 | } |