Commit | Line | Data |
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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> |
1da177e4 LT |
53 | |
54 | #include "libata.h" | |
d9027470 | 55 | #include "libata-transport.h" |
1da177e4 | 56 | |
87340e98 TH |
57 | #define ATA_SCSI_RBUF_SIZE 4096 |
58 | ||
59 | static DEFINE_SPINLOCK(ata_scsi_rbuf_lock); | |
60 | static u8 ata_scsi_rbuf[ATA_SCSI_RBUF_SIZE]; | |
b095518e | 61 | |
ad706991 | 62 | typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc); |
ab5b3a5b | 63 | |
2dcb407e | 64 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
ab5b3a5b | 65 | const struct scsi_device *scsidev); |
2dcb407e | 66 | static struct ata_device *ata_scsi_find_dev(struct ata_port *ap, |
ab5b3a5b | 67 | const struct scsi_device *scsidev); |
1da177e4 | 68 | |
00ac37f5 DG |
69 | #define RW_RECOVERY_MPAGE 0x1 |
70 | #define RW_RECOVERY_MPAGE_LEN 12 | |
71 | #define CACHE_MPAGE 0x8 | |
72 | #define CACHE_MPAGE_LEN 20 | |
73 | #define CONTROL_MPAGE 0xa | |
74 | #define CONTROL_MPAGE_LEN 12 | |
75 | #define ALL_MPAGES 0x3f | |
76 | #define ALL_SUB_MPAGES 0xff | |
77 | ||
78 | ||
24f75686 | 79 | static const u8 def_rw_recovery_mpage[RW_RECOVERY_MPAGE_LEN] = { |
00ac37f5 DG |
80 | RW_RECOVERY_MPAGE, |
81 | RW_RECOVERY_MPAGE_LEN - 2, | |
24f75686 | 82 | (1 << 7), /* AWRE */ |
00ac37f5 DG |
83 | 0, /* read retry count */ |
84 | 0, 0, 0, 0, | |
85 | 0, /* write retry count */ | |
86 | 0, 0, 0 | |
87 | }; | |
88 | ||
89 | static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = { | |
90 | CACHE_MPAGE, | |
91 | CACHE_MPAGE_LEN - 2, | |
92 | 0, /* contains WCE, needs to be 0 for logic */ | |
93 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
94 | 0, /* contains DRA, needs to be 0 for logic */ | |
95 | 0, 0, 0, 0, 0, 0, 0 | |
96 | }; | |
97 | ||
98 | static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = { | |
99 | CONTROL_MPAGE, | |
100 | CONTROL_MPAGE_LEN - 2, | |
101 | 2, /* DSENSE=0, GLTSD=1 */ | |
102 | 0, /* [QAM+QERR may be 1, see 05-359r1] */ | |
103 | 0, 0, 0, 0, 0xff, 0xff, | |
104 | 0, 30 /* extended self test time, see 05-359r1 */ | |
105 | }; | |
106 | ||
c93b263e TH |
107 | static const char *ata_lpm_policy_names[] = { |
108 | [ATA_LPM_UNKNOWN] = "max_performance", | |
109 | [ATA_LPM_MAX_POWER] = "max_performance", | |
110 | [ATA_LPM_MED_POWER] = "medium_power", | |
111 | [ATA_LPM_MIN_POWER] = "min_power", | |
ca77329f KCA |
112 | }; |
113 | ||
ecd75ad5 | 114 | static ssize_t ata_scsi_lpm_store(struct device *device, |
c93b263e TH |
115 | struct device_attribute *attr, |
116 | const char *buf, size_t count) | |
ca77329f | 117 | { |
ecd75ad5 | 118 | struct Scsi_Host *shost = class_to_shost(device); |
ca77329f | 119 | struct ata_port *ap = ata_shost_to_port(shost); |
ecd75ad5 TH |
120 | struct ata_link *link; |
121 | struct ata_device *dev; | |
c93b263e | 122 | enum ata_lpm_policy policy; |
6b7ae954 | 123 | unsigned long flags; |
c93b263e TH |
124 | |
125 | /* UNKNOWN is internal state, iterate from MAX_POWER */ | |
126 | for (policy = ATA_LPM_MAX_POWER; | |
127 | policy < ARRAY_SIZE(ata_lpm_policy_names); policy++) { | |
128 | const char *name = ata_lpm_policy_names[policy]; | |
129 | ||
130 | if (strncmp(name, buf, strlen(name)) == 0) | |
ca77329f | 131 | break; |
ca77329f | 132 | } |
c93b263e | 133 | if (policy == ARRAY_SIZE(ata_lpm_policy_names)) |
ca77329f KCA |
134 | return -EINVAL; |
135 | ||
6b7ae954 | 136 | spin_lock_irqsave(ap->lock, flags); |
ecd75ad5 TH |
137 | |
138 | ata_for_each_link(link, ap, EDGE) { | |
139 | ata_for_each_dev(dev, &ap->link, ENABLED) { | |
140 | if (dev->horkage & ATA_HORKAGE_NOLPM) { | |
141 | count = -EOPNOTSUPP; | |
142 | goto out_unlock; | |
143 | } | |
144 | } | |
145 | } | |
146 | ||
6b7ae954 TH |
147 | ap->target_lpm_policy = policy; |
148 | ata_port_schedule_eh(ap); | |
ecd75ad5 | 149 | out_unlock: |
6b7ae954 | 150 | spin_unlock_irqrestore(ap->lock, flags); |
ca77329f KCA |
151 | return count; |
152 | } | |
153 | ||
c93b263e TH |
154 | static ssize_t ata_scsi_lpm_show(struct device *dev, |
155 | struct device_attribute *attr, char *buf) | |
ca77329f | 156 | { |
ee959b00 | 157 | struct Scsi_Host *shost = class_to_shost(dev); |
ca77329f | 158 | struct ata_port *ap = ata_shost_to_port(shost); |
ca77329f | 159 | |
6b7ae954 | 160 | if (ap->target_lpm_policy >= ARRAY_SIZE(ata_lpm_policy_names)) |
ca77329f KCA |
161 | return -EINVAL; |
162 | ||
c93b263e | 163 | return snprintf(buf, PAGE_SIZE, "%s\n", |
6b7ae954 | 164 | ata_lpm_policy_names[ap->target_lpm_policy]); |
ca77329f | 165 | } |
ee959b00 | 166 | DEVICE_ATTR(link_power_management_policy, S_IRUGO | S_IWUSR, |
c93b263e | 167 | ata_scsi_lpm_show, ata_scsi_lpm_store); |
ee959b00 | 168 | EXPORT_SYMBOL_GPL(dev_attr_link_power_management_policy); |
ca77329f | 169 | |
45fabbb7 EO |
170 | static ssize_t ata_scsi_park_show(struct device *device, |
171 | struct device_attribute *attr, char *buf) | |
172 | { | |
173 | struct scsi_device *sdev = to_scsi_device(device); | |
174 | struct ata_port *ap; | |
175 | struct ata_link *link; | |
176 | struct ata_device *dev; | |
3948b6f2 | 177 | unsigned long now; |
45fabbb7 EO |
178 | unsigned int uninitialized_var(msecs); |
179 | int rc = 0; | |
180 | ||
181 | ap = ata_shost_to_port(sdev->host); | |
182 | ||
3948b6f2 | 183 | spin_lock_irq(ap->lock); |
45fabbb7 EO |
184 | dev = ata_scsi_find_dev(ap, sdev); |
185 | if (!dev) { | |
186 | rc = -ENODEV; | |
187 | goto unlock; | |
188 | } | |
189 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { | |
190 | rc = -EOPNOTSUPP; | |
191 | goto unlock; | |
192 | } | |
193 | ||
194 | link = dev->link; | |
a464189d | 195 | now = jiffies; |
45fabbb7 EO |
196 | if (ap->pflags & ATA_PFLAG_EH_IN_PROGRESS && |
197 | link->eh_context.unloaded_mask & (1 << dev->devno) && | |
a464189d EO |
198 | time_after(dev->unpark_deadline, now)) |
199 | msecs = jiffies_to_msecs(dev->unpark_deadline - now); | |
45fabbb7 EO |
200 | else |
201 | msecs = 0; | |
202 | ||
203 | unlock: | |
204 | spin_unlock_irq(ap->lock); | |
205 | ||
206 | return rc ? rc : snprintf(buf, 20, "%u\n", msecs); | |
207 | } | |
208 | ||
209 | static ssize_t ata_scsi_park_store(struct device *device, | |
210 | struct device_attribute *attr, | |
211 | const char *buf, size_t len) | |
212 | { | |
213 | struct scsi_device *sdev = to_scsi_device(device); | |
214 | struct ata_port *ap; | |
215 | struct ata_device *dev; | |
216 | long int input; | |
217 | unsigned long flags; | |
218 | int rc; | |
219 | ||
42b9ab7a JH |
220 | rc = kstrtol(buf, 10, &input); |
221 | if (rc) | |
222 | return rc; | |
223 | if (input < -2) | |
45fabbb7 EO |
224 | return -EINVAL; |
225 | if (input > ATA_TMOUT_MAX_PARK) { | |
226 | rc = -EOVERFLOW; | |
227 | input = ATA_TMOUT_MAX_PARK; | |
228 | } | |
229 | ||
230 | ap = ata_shost_to_port(sdev->host); | |
231 | ||
232 | spin_lock_irqsave(ap->lock, flags); | |
233 | dev = ata_scsi_find_dev(ap, sdev); | |
234 | if (unlikely(!dev)) { | |
235 | rc = -ENODEV; | |
236 | goto unlock; | |
237 | } | |
9162c657 HR |
238 | if (dev->class != ATA_DEV_ATA && |
239 | dev->class != ATA_DEV_ZAC) { | |
45fabbb7 EO |
240 | rc = -EOPNOTSUPP; |
241 | goto unlock; | |
242 | } | |
243 | ||
244 | if (input >= 0) { | |
245 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { | |
246 | rc = -EOPNOTSUPP; | |
247 | goto unlock; | |
248 | } | |
249 | ||
250 | dev->unpark_deadline = ata_deadline(jiffies, input); | |
251 | dev->link->eh_info.dev_action[dev->devno] |= ATA_EH_PARK; | |
252 | ata_port_schedule_eh(ap); | |
253 | complete(&ap->park_req_pending); | |
254 | } else { | |
255 | switch (input) { | |
256 | case -1: | |
257 | dev->flags &= ~ATA_DFLAG_NO_UNLOAD; | |
258 | break; | |
259 | case -2: | |
260 | dev->flags |= ATA_DFLAG_NO_UNLOAD; | |
261 | break; | |
262 | } | |
263 | } | |
264 | unlock: | |
265 | spin_unlock_irqrestore(ap->lock, flags); | |
266 | ||
267 | return rc ? rc : len; | |
268 | } | |
269 | DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR, | |
270 | ata_scsi_park_show, ata_scsi_park_store); | |
271 | EXPORT_SYMBOL_GPL(dev_attr_unload_heads); | |
272 | ||
06dbde5f HR |
273 | void ata_scsi_set_sense(struct ata_device *dev, struct scsi_cmnd *cmd, |
274 | u8 sk, u8 asc, u8 ascq) | |
f0761be3 | 275 | { |
06dbde5f HR |
276 | bool d_sense = (dev->flags & ATA_DFLAG_D_SENSE); |
277 | ||
5b01e4b9 HR |
278 | if (!cmd) |
279 | return; | |
280 | ||
f0761be3 TH |
281 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
282 | ||
06dbde5f | 283 | scsi_build_sense_buffer(d_sense, cmd->sense_buffer, sk, asc, ascq); |
f0761be3 TH |
284 | } |
285 | ||
492bf621 HR |
286 | void ata_scsi_set_sense_information(struct ata_device *dev, |
287 | struct scsi_cmnd *cmd, | |
288 | const struct ata_taskfile *tf) | |
289 | { | |
290 | u64 information; | |
291 | ||
292 | if (!cmd) | |
293 | return; | |
294 | ||
295 | information = ata_tf_read_block(tf, dev); | |
296 | if (information == U64_MAX) | |
297 | return; | |
298 | ||
299 | scsi_set_sense_information(cmd->sense_buffer, | |
300 | SCSI_SENSE_BUFFERSIZE, information); | |
301 | } | |
302 | ||
bcfc867d | 303 | static void ata_scsi_set_invalid_field(struct ata_device *dev, |
0df10b84 | 304 | struct scsi_cmnd *cmd, u16 field, u8 bit) |
bcfc867d HR |
305 | { |
306 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x24, 0x0); | |
307 | /* "Invalid field in cbd" */ | |
308 | scsi_set_sense_field_pointer(cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE, | |
0df10b84 | 309 | field, bit, 1); |
bcfc867d HR |
310 | } |
311 | ||
7780081c HR |
312 | static void ata_scsi_set_invalid_parameter(struct ata_device *dev, |
313 | struct scsi_cmnd *cmd, u16 field) | |
314 | { | |
315 | /* "Invalid field in parameter list" */ | |
316 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x26, 0x0); | |
317 | scsi_set_sense_field_pointer(cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE, | |
318 | field, 0xff, 0); | |
f0761be3 TH |
319 | } |
320 | ||
18f7ba4c KCA |
321 | static ssize_t |
322 | ata_scsi_em_message_store(struct device *dev, struct device_attribute *attr, | |
323 | const char *buf, size_t count) | |
324 | { | |
325 | struct Scsi_Host *shost = class_to_shost(dev); | |
326 | struct ata_port *ap = ata_shost_to_port(shost); | |
327 | if (ap->ops->em_store && (ap->flags & ATA_FLAG_EM)) | |
328 | return ap->ops->em_store(ap, buf, count); | |
329 | return -EINVAL; | |
330 | } | |
331 | ||
332 | static ssize_t | |
333 | ata_scsi_em_message_show(struct device *dev, struct device_attribute *attr, | |
334 | char *buf) | |
335 | { | |
336 | struct Scsi_Host *shost = class_to_shost(dev); | |
337 | struct ata_port *ap = ata_shost_to_port(shost); | |
338 | ||
339 | if (ap->ops->em_show && (ap->flags & ATA_FLAG_EM)) | |
340 | return ap->ops->em_show(ap, buf); | |
341 | return -EINVAL; | |
342 | } | |
ea7a5ed5 | 343 | DEVICE_ATTR(em_message, S_IRUGO | S_IWUSR, |
18f7ba4c KCA |
344 | ata_scsi_em_message_show, ata_scsi_em_message_store); |
345 | EXPORT_SYMBOL_GPL(dev_attr_em_message); | |
346 | ||
347 | static ssize_t | |
348 | ata_scsi_em_message_type_show(struct device *dev, struct device_attribute *attr, | |
349 | char *buf) | |
350 | { | |
351 | struct Scsi_Host *shost = class_to_shost(dev); | |
352 | struct ata_port *ap = ata_shost_to_port(shost); | |
353 | ||
354 | return snprintf(buf, 23, "%d\n", ap->em_message_type); | |
355 | } | |
356 | DEVICE_ATTR(em_message_type, S_IRUGO, | |
357 | ata_scsi_em_message_type_show, NULL); | |
358 | EXPORT_SYMBOL_GPL(dev_attr_em_message_type); | |
359 | ||
360 | static ssize_t | |
361 | ata_scsi_activity_show(struct device *dev, struct device_attribute *attr, | |
362 | char *buf) | |
363 | { | |
364 | struct scsi_device *sdev = to_scsi_device(dev); | |
365 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
366 | struct ata_device *atadev = ata_scsi_find_dev(ap, sdev); | |
367 | ||
26cd4d65 XF |
368 | if (atadev && ap->ops->sw_activity_show && |
369 | (ap->flags & ATA_FLAG_SW_ACTIVITY)) | |
18f7ba4c KCA |
370 | return ap->ops->sw_activity_show(atadev, buf); |
371 | return -EINVAL; | |
372 | } | |
373 | ||
374 | static ssize_t | |
375 | ata_scsi_activity_store(struct device *dev, struct device_attribute *attr, | |
376 | const char *buf, size_t count) | |
377 | { | |
378 | struct scsi_device *sdev = to_scsi_device(dev); | |
379 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
380 | struct ata_device *atadev = ata_scsi_find_dev(ap, sdev); | |
381 | enum sw_activity val; | |
382 | int rc; | |
383 | ||
26cd4d65 XF |
384 | if (atadev && ap->ops->sw_activity_store && |
385 | (ap->flags & ATA_FLAG_SW_ACTIVITY)) { | |
18f7ba4c KCA |
386 | val = simple_strtoul(buf, NULL, 0); |
387 | switch (val) { | |
388 | case OFF: case BLINK_ON: case BLINK_OFF: | |
389 | rc = ap->ops->sw_activity_store(atadev, val); | |
390 | if (!rc) | |
391 | return count; | |
392 | else | |
393 | return rc; | |
394 | } | |
395 | } | |
396 | return -EINVAL; | |
397 | } | |
ea7a5ed5 | 398 | DEVICE_ATTR(sw_activity, S_IWUSR | S_IRUGO, ata_scsi_activity_show, |
18f7ba4c KCA |
399 | ata_scsi_activity_store); |
400 | EXPORT_SYMBOL_GPL(dev_attr_sw_activity); | |
401 | ||
45fabbb7 EO |
402 | struct device_attribute *ata_common_sdev_attrs[] = { |
403 | &dev_attr_unload_heads, | |
404 | NULL | |
405 | }; | |
406 | EXPORT_SYMBOL_GPL(ata_common_sdev_attrs); | |
407 | ||
06dbde5f | 408 | static void ata_scsi_invalid_field(struct ata_device *dev, |
bcfc867d | 409 | struct scsi_cmnd *cmd, u16 field) |
ae006510 | 410 | { |
0df10b84 | 411 | ata_scsi_set_invalid_field(dev, cmd, field, 0xff); |
b27dcfb0 | 412 | cmd->scsi_done(cmd); |
ae006510 DG |
413 | } |
414 | ||
1da177e4 LT |
415 | /** |
416 | * ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd. | |
417 | * @sdev: SCSI device for which BIOS geometry is to be determined | |
418 | * @bdev: block device associated with @sdev | |
419 | * @capacity: capacity of SCSI device | |
420 | * @geom: location to which geometry will be output | |
421 | * | |
422 | * Generic bios head/sector/cylinder calculator | |
423 | * used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS) | |
424 | * mapping. Some situations may arise where the disk is not | |
425 | * bootable if this is not used. | |
426 | * | |
427 | * LOCKING: | |
428 | * Defined by the SCSI layer. We don't really care. | |
429 | * | |
430 | * RETURNS: | |
431 | * Zero. | |
432 | */ | |
433 | int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, | |
434 | sector_t capacity, int geom[]) | |
435 | { | |
436 | geom[0] = 255; | |
437 | geom[1] = 63; | |
438 | sector_div(capacity, 255*63); | |
439 | geom[2] = capacity; | |
440 | ||
441 | return 0; | |
442 | } | |
443 | ||
d8d9129e TH |
444 | /** |
445 | * ata_scsi_unlock_native_capacity - unlock native capacity | |
446 | * @sdev: SCSI device to adjust device capacity for | |
447 | * | |
448 | * This function is called if a partition on @sdev extends beyond | |
449 | * the end of the device. It requests EH to unlock HPA. | |
450 | * | |
451 | * LOCKING: | |
452 | * Defined by the SCSI layer. Might sleep. | |
453 | */ | |
454 | void ata_scsi_unlock_native_capacity(struct scsi_device *sdev) | |
455 | { | |
456 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
457 | struct ata_device *dev; | |
458 | unsigned long flags; | |
459 | ||
460 | spin_lock_irqsave(ap->lock, flags); | |
461 | ||
462 | dev = ata_scsi_find_dev(ap, sdev); | |
463 | if (dev && dev->n_sectors < dev->n_native_sectors) { | |
464 | dev->flags |= ATA_DFLAG_UNLOCK_HPA; | |
465 | dev->link->eh_info.action |= ATA_EH_RESET; | |
466 | ata_port_schedule_eh(ap); | |
467 | } | |
468 | ||
469 | spin_unlock_irqrestore(ap->lock, flags); | |
470 | ata_port_wait_eh(ap); | |
471 | } | |
472 | ||
5924b74c TH |
473 | /** |
474 | * ata_get_identity - Handler for HDIO_GET_IDENTITY ioctl | |
5eb66fe0 | 475 | * @ap: target port |
5924b74c TH |
476 | * @sdev: SCSI device to get identify data for |
477 | * @arg: User buffer area for identify data | |
478 | * | |
479 | * LOCKING: | |
480 | * Defined by the SCSI layer. We don't really care. | |
481 | * | |
482 | * RETURNS: | |
483 | * Zero on success, negative errno on error. | |
484 | */ | |
94be9a58 JG |
485 | static int ata_get_identity(struct ata_port *ap, struct scsi_device *sdev, |
486 | void __user *arg) | |
5924b74c | 487 | { |
5924b74c TH |
488 | struct ata_device *dev = ata_scsi_find_dev(ap, sdev); |
489 | u16 __user *dst = arg; | |
490 | char buf[40]; | |
491 | ||
492 | if (!dev) | |
493 | return -ENOMSG; | |
494 | ||
495 | if (copy_to_user(dst, dev->id, ATA_ID_WORDS * sizeof(u16))) | |
496 | return -EFAULT; | |
497 | ||
498 | ata_id_string(dev->id, buf, ATA_ID_PROD, ATA_ID_PROD_LEN); | |
499 | if (copy_to_user(dst + ATA_ID_PROD, buf, ATA_ID_PROD_LEN)) | |
500 | return -EFAULT; | |
501 | ||
502 | ata_id_string(dev->id, buf, ATA_ID_FW_REV, ATA_ID_FW_REV_LEN); | |
503 | if (copy_to_user(dst + ATA_ID_FW_REV, buf, ATA_ID_FW_REV_LEN)) | |
504 | return -EFAULT; | |
505 | ||
506 | ata_id_string(dev->id, buf, ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
507 | if (copy_to_user(dst + ATA_ID_SERNO, buf, ATA_ID_SERNO_LEN)) | |
508 | return -EFAULT; | |
509 | ||
510 | return 0; | |
511 | } | |
512 | ||
b095518e JG |
513 | /** |
514 | * ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl | |
8e8b77dd | 515 | * @scsidev: Device to which we are issuing command |
b095518e JG |
516 | * @arg: User provided data for issuing command |
517 | * | |
518 | * LOCKING: | |
519 | * Defined by the SCSI layer. We don't really care. | |
520 | * | |
521 | * RETURNS: | |
522 | * Zero on success, negative errno on error. | |
523 | */ | |
b095518e JG |
524 | int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg) |
525 | { | |
526 | int rc = 0; | |
527 | u8 scsi_cmd[MAX_COMMAND_SIZE]; | |
bbe1fe7e | 528 | u8 args[4], *argbuf = NULL, *sensebuf = NULL; |
b095518e | 529 | int argsize = 0; |
85837ebd | 530 | enum dma_data_direction data_dir; |
bbe1fe7e | 531 | int cmd_result; |
b095518e | 532 | |
c893a3ae | 533 | if (arg == NULL) |
b095518e JG |
534 | return -EINVAL; |
535 | ||
536 | if (copy_from_user(args, arg, sizeof(args))) | |
537 | return -EFAULT; | |
538 | ||
bbe1fe7e ET |
539 | sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO); |
540 | if (!sensebuf) | |
541 | return -ENOMEM; | |
542 | ||
b095518e JG |
543 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
544 | ||
545 | if (args[3]) { | |
295124dc | 546 | argsize = ATA_SECT_SIZE * args[3]; |
b095518e | 547 | argbuf = kmalloc(argsize, GFP_KERNEL); |
54dac83c JR |
548 | if (argbuf == NULL) { |
549 | rc = -ENOMEM; | |
550 | goto error; | |
551 | } | |
b095518e JG |
552 | |
553 | scsi_cmd[1] = (4 << 1); /* PIO Data-in */ | |
554 | scsi_cmd[2] = 0x0e; /* no off.line or cc, read from dev, | |
2dcb407e | 555 | block count in sector count field */ |
85837ebd | 556 | data_dir = DMA_FROM_DEVICE; |
b095518e JG |
557 | } else { |
558 | scsi_cmd[1] = (3 << 1); /* Non-data */ | |
bbe1fe7e | 559 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
85837ebd | 560 | data_dir = DMA_NONE; |
b095518e JG |
561 | } |
562 | ||
563 | scsi_cmd[0] = ATA_16; | |
564 | ||
565 | scsi_cmd[4] = args[2]; | |
a4f19040 | 566 | if (args[0] == ATA_CMD_SMART) { /* hack -- ide driver does this too */ |
b095518e JG |
567 | scsi_cmd[6] = args[3]; |
568 | scsi_cmd[8] = args[1]; | |
569 | scsi_cmd[10] = 0x4f; | |
570 | scsi_cmd[12] = 0xc2; | |
571 | } else { | |
572 | scsi_cmd[6] = args[1]; | |
573 | } | |
574 | scsi_cmd[14] = args[0]; | |
575 | ||
576 | /* Good values for timeout and retries? Values below | |
577 | from scsi_ioctl_send_command() for default case... */ | |
bbe1fe7e | 578 | cmd_result = scsi_execute(scsidev, scsi_cmd, data_dir, argbuf, argsize, |
f4f4e47e | 579 | sensebuf, (10*HZ), 5, 0, NULL); |
bbe1fe7e ET |
580 | |
581 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ | |
582 | u8 *desc = sensebuf + 8; | |
583 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ | |
584 | ||
585 | /* If we set cc then ATA pass-through will cause a | |
586 | * check condition even if no error. Filter that. */ | |
587 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { | |
588 | struct scsi_sense_hdr sshdr; | |
589 | scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE, | |
2dcb407e | 590 | &sshdr); |
6d3bfc7b KM |
591 | if (sshdr.sense_key == RECOVERED_ERROR && |
592 | sshdr.asc == 0 && sshdr.ascq == 0x1d) | |
bbe1fe7e ET |
593 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
594 | } | |
595 | ||
596 | /* Send userspace a few ATA registers (same as drivers/ide) */ | |
2dcb407e JG |
597 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ |
598 | desc[0] == 0x09) { /* code is "ATA Descriptor" */ | |
599 | args[0] = desc[13]; /* status */ | |
600 | args[1] = desc[3]; /* error */ | |
601 | args[2] = desc[5]; /* sector count (0:7) */ | |
bbe1fe7e ET |
602 | if (copy_to_user(arg, args, sizeof(args))) |
603 | rc = -EFAULT; | |
604 | } | |
605 | } | |
606 | ||
607 | ||
608 | if (cmd_result) { | |
b095518e JG |
609 | rc = -EIO; |
610 | goto error; | |
611 | } | |
612 | ||
b095518e | 613 | if ((argbuf) |
c893a3ae | 614 | && copy_to_user(arg + sizeof(args), argbuf, argsize)) |
b095518e JG |
615 | rc = -EFAULT; |
616 | error: | |
bbe1fe7e | 617 | kfree(sensebuf); |
8f760780 | 618 | kfree(argbuf); |
b095518e JG |
619 | return rc; |
620 | } | |
621 | ||
622 | /** | |
623 | * ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl | |
8e8b77dd | 624 | * @scsidev: Device to which we are issuing command |
b095518e JG |
625 | * @arg: User provided data for issuing command |
626 | * | |
627 | * LOCKING: | |
628 | * Defined by the SCSI layer. We don't really care. | |
629 | * | |
630 | * RETURNS: | |
631 | * Zero on success, negative errno on error. | |
632 | */ | |
633 | int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) | |
634 | { | |
635 | int rc = 0; | |
636 | u8 scsi_cmd[MAX_COMMAND_SIZE]; | |
af068bd1 DM |
637 | u8 args[7], *sensebuf = NULL; |
638 | int cmd_result; | |
b095518e | 639 | |
c893a3ae | 640 | if (arg == NULL) |
b095518e JG |
641 | return -EINVAL; |
642 | ||
643 | if (copy_from_user(args, arg, sizeof(args))) | |
644 | return -EFAULT; | |
645 | ||
af068bd1 DM |
646 | sensebuf = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO); |
647 | if (!sensebuf) | |
648 | return -ENOMEM; | |
649 | ||
b095518e JG |
650 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
651 | scsi_cmd[0] = ATA_16; | |
652 | scsi_cmd[1] = (3 << 1); /* Non-data */ | |
af068bd1 | 653 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
b095518e JG |
654 | scsi_cmd[4] = args[1]; |
655 | scsi_cmd[6] = args[2]; | |
656 | scsi_cmd[8] = args[3]; | |
657 | scsi_cmd[10] = args[4]; | |
658 | scsi_cmd[12] = args[5]; | |
277239f2 | 659 | scsi_cmd[13] = args[6] & 0x4f; |
b095518e JG |
660 | scsi_cmd[14] = args[0]; |
661 | ||
b095518e | 662 | /* Good values for timeout and retries? Values below |
2e9edbf8 | 663 | from scsi_ioctl_send_command() for default case... */ |
af068bd1 | 664 | cmd_result = scsi_execute(scsidev, scsi_cmd, DMA_NONE, NULL, 0, |
f4f4e47e | 665 | sensebuf, (10*HZ), 5, 0, NULL); |
af068bd1 DM |
666 | |
667 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ | |
668 | u8 *desc = sensebuf + 8; | |
669 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ | |
670 | ||
671 | /* If we set cc then ATA pass-through will cause a | |
672 | * check condition even if no error. Filter that. */ | |
673 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { | |
674 | struct scsi_sense_hdr sshdr; | |
675 | scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE, | |
676 | &sshdr); | |
6d3bfc7b KM |
677 | if (sshdr.sense_key == RECOVERED_ERROR && |
678 | sshdr.asc == 0 && sshdr.ascq == 0x1d) | |
af068bd1 DM |
679 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
680 | } | |
681 | ||
682 | /* Send userspace ATA registers */ | |
683 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ | |
684 | desc[0] == 0x09) {/* code is "ATA Descriptor" */ | |
685 | args[0] = desc[13]; /* status */ | |
686 | args[1] = desc[3]; /* error */ | |
687 | args[2] = desc[5]; /* sector count (0:7) */ | |
688 | args[3] = desc[7]; /* lbal */ | |
689 | args[4] = desc[9]; /* lbam */ | |
690 | args[5] = desc[11]; /* lbah */ | |
691 | args[6] = desc[12]; /* select */ | |
692 | if (copy_to_user(arg, args, sizeof(args))) | |
693 | rc = -EFAULT; | |
694 | } | |
695 | } | |
696 | ||
697 | if (cmd_result) { | |
b095518e | 698 | rc = -EIO; |
af068bd1 DM |
699 | goto error; |
700 | } | |
b095518e | 701 | |
af068bd1 DM |
702 | error: |
703 | kfree(sensebuf); | |
b095518e JG |
704 | return rc; |
705 | } | |
706 | ||
e3cf95dd AC |
707 | static int ata_ioc32(struct ata_port *ap) |
708 | { | |
709 | if (ap->flags & ATA_FLAG_PIO_DMA) | |
710 | return 1; | |
711 | if (ap->pflags & ATA_PFLAG_PIO32) | |
712 | return 1; | |
713 | return 0; | |
714 | } | |
715 | ||
94be9a58 JG |
716 | int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev, |
717 | int cmd, void __user *arg) | |
1da177e4 | 718 | { |
287e6611 AB |
719 | unsigned long val; |
720 | int rc = -EINVAL; | |
e3cf95dd | 721 | unsigned long flags; |
1da177e4 | 722 | |
1da177e4 | 723 | switch (cmd) { |
287e6611 | 724 | case HDIO_GET_32BIT: |
e3cf95dd AC |
725 | spin_lock_irqsave(ap->lock, flags); |
726 | val = ata_ioc32(ap); | |
727 | spin_unlock_irqrestore(ap->lock, flags); | |
287e6611 | 728 | return put_user(val, (unsigned long __user *)arg); |
1da177e4 | 729 | |
287e6611 | 730 | case HDIO_SET_32BIT: |
1da177e4 | 731 | val = (unsigned long) arg; |
e3cf95dd AC |
732 | rc = 0; |
733 | spin_lock_irqsave(ap->lock, flags); | |
734 | if (ap->pflags & ATA_PFLAG_PIO32CHANGE) { | |
735 | if (val) | |
736 | ap->pflags |= ATA_PFLAG_PIO32; | |
737 | else | |
738 | ap->pflags &= ~ATA_PFLAG_PIO32; | |
739 | } else { | |
740 | if (val != ata_ioc32(ap)) | |
741 | rc = -EINVAL; | |
742 | } | |
743 | spin_unlock_irqrestore(ap->lock, flags); | |
744 | return rc; | |
1da177e4 | 745 | |
5924b74c | 746 | case HDIO_GET_IDENTITY: |
94be9a58 | 747 | return ata_get_identity(ap, scsidev, arg); |
5924b74c | 748 | |
b095518e JG |
749 | case HDIO_DRIVE_CMD: |
750 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
751 | return -EACCES; | |
752 | return ata_cmd_ioctl(scsidev, arg); | |
753 | ||
754 | case HDIO_DRIVE_TASK: | |
755 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
756 | return -EACCES; | |
757 | return ata_task_ioctl(scsidev, arg); | |
758 | ||
1da177e4 LT |
759 | default: |
760 | rc = -ENOTTY; | |
761 | break; | |
762 | } | |
763 | ||
1da177e4 LT |
764 | return rc; |
765 | } | |
94be9a58 JG |
766 | EXPORT_SYMBOL_GPL(ata_sas_scsi_ioctl); |
767 | ||
768 | int ata_scsi_ioctl(struct scsi_device *scsidev, int cmd, void __user *arg) | |
769 | { | |
770 | return ata_sas_scsi_ioctl(ata_shost_to_port(scsidev->host), | |
771 | scsidev, cmd, arg); | |
772 | } | |
773 | EXPORT_SYMBOL_GPL(ata_scsi_ioctl); | |
1da177e4 LT |
774 | |
775 | /** | |
776 | * ata_scsi_qc_new - acquire new ata_queued_cmd reference | |
1da177e4 LT |
777 | * @dev: ATA device to which the new command is attached |
778 | * @cmd: SCSI command that originated this ATA command | |
1da177e4 LT |
779 | * |
780 | * Obtain a reference to an unused ata_queued_cmd structure, | |
781 | * which is the basic libata structure representing a single | |
782 | * ATA command sent to the hardware. | |
783 | * | |
784 | * If a command was available, fill in the SCSI-specific | |
785 | * portions of the structure with information on the | |
786 | * current command. | |
787 | * | |
788 | * LOCKING: | |
cca3974e | 789 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
790 | * |
791 | * RETURNS: | |
792 | * Command allocated, or %NULL if none available. | |
793 | */ | |
7102d230 | 794 | static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev, |
b27dcfb0 | 795 | struct scsi_cmnd *cmd) |
1da177e4 LT |
796 | { |
797 | struct ata_queued_cmd *qc; | |
798 | ||
12cb5ce1 | 799 | qc = ata_qc_new_init(dev, cmd->request->tag); |
1da177e4 LT |
800 | if (qc) { |
801 | qc->scsicmd = cmd; | |
b27dcfb0 | 802 | qc->scsidone = cmd->scsi_done; |
1da177e4 | 803 | |
ff2aeb1e | 804 | qc->sg = scsi_sglist(cmd); |
7120165c | 805 | qc->n_elem = scsi_sg_count(cmd); |
1da177e4 LT |
806 | } else { |
807 | cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1); | |
b27dcfb0 | 808 | cmd->scsi_done(cmd); |
1da177e4 LT |
809 | } |
810 | ||
811 | return qc; | |
812 | } | |
813 | ||
aacda375 TH |
814 | static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc) |
815 | { | |
816 | struct scsi_cmnd *scmd = qc->scsicmd; | |
817 | ||
818 | qc->extrabytes = scmd->request->extra_len; | |
819 | qc->nbytes = scsi_bufflen(scmd) + qc->extrabytes; | |
820 | } | |
821 | ||
b095518e JG |
822 | /** |
823 | * ata_dump_status - user friendly display of error info | |
824 | * @id: id of the port in question | |
825 | * @tf: ptr to filled out taskfile | |
826 | * | |
827 | * Decode and dump the ATA error/status registers for the user so | |
828 | * that they have some idea what really happened at the non | |
829 | * make-believe layer. | |
830 | * | |
831 | * LOCKING: | |
832 | * inherited from caller | |
833 | */ | |
7102d230 | 834 | static void ata_dump_status(unsigned id, struct ata_taskfile *tf) |
b095518e JG |
835 | { |
836 | u8 stat = tf->command, err = tf->feature; | |
837 | ||
838 | printk(KERN_WARNING "ata%u: status=0x%02x { ", id, stat); | |
839 | if (stat & ATA_BUSY) { | |
840 | printk("Busy }\n"); /* Data is not valid in this case */ | |
841 | } else { | |
1308d7f0 HR |
842 | if (stat & ATA_DRDY) printk("DriveReady "); |
843 | if (stat & ATA_DF) printk("DeviceFault "); | |
844 | if (stat & ATA_DSC) printk("SeekComplete "); | |
845 | if (stat & ATA_DRQ) printk("DataRequest "); | |
846 | if (stat & ATA_CORR) printk("CorrectedError "); | |
847 | if (stat & ATA_SENSE) printk("Sense "); | |
848 | if (stat & ATA_ERR) printk("Error "); | |
b095518e JG |
849 | printk("}\n"); |
850 | ||
851 | if (err) { | |
852 | printk(KERN_WARNING "ata%u: error=0x%02x { ", id, err); | |
1308d7f0 HR |
853 | if (err & ATA_ABORTED) printk("DriveStatusError "); |
854 | if (err & ATA_ICRC) { | |
855 | if (err & ATA_ABORTED) | |
856 | printk("BadCRC "); | |
b095518e JG |
857 | else printk("Sector "); |
858 | } | |
1308d7f0 HR |
859 | if (err & ATA_UNC) printk("UncorrectableError "); |
860 | if (err & ATA_IDNF) printk("SectorIdNotFound "); | |
861 | if (err & ATA_TRK0NF) printk("TrackZeroNotFound "); | |
862 | if (err & ATA_AMNF) printk("AddrMarkNotFound "); | |
b095518e JG |
863 | printk("}\n"); |
864 | } | |
865 | } | |
866 | } | |
867 | ||
1da177e4 LT |
868 | /** |
869 | * ata_to_sense_error - convert ATA error to SCSI error | |
8e8b77dd | 870 | * @id: ATA device number |
1da177e4 | 871 | * @drv_stat: value contained in ATA status register |
b095518e JG |
872 | * @drv_err: value contained in ATA error register |
873 | * @sk: the sense key we'll fill out | |
874 | * @asc: the additional sense code we'll fill out | |
875 | * @ascq: the additional sense code qualifier we'll fill out | |
246619da | 876 | * @verbose: be verbose |
1da177e4 | 877 | * |
b095518e JG |
878 | * Converts an ATA error into a SCSI error. Fill out pointers to |
879 | * SK, ASC, and ASCQ bytes for later use in fixed or descriptor | |
880 | * format sense blocks. | |
1da177e4 LT |
881 | * |
882 | * LOCKING: | |
cca3974e | 883 | * spin_lock_irqsave(host lock) |
1da177e4 | 884 | */ |
7102d230 AB |
885 | static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, |
886 | u8 *asc, u8 *ascq, int verbose) | |
1da177e4 | 887 | { |
b095518e | 888 | int i; |
ffe75ef6 | 889 | |
1da177e4 | 890 | /* Based on the 3ware driver translation table */ |
98ac62de | 891 | static const unsigned char sense_table[][4] = { |
1da177e4 | 892 | /* BBD|ECC|ID|MAR */ |
8ae72044 HR |
893 | {0xd1, ABORTED_COMMAND, 0x00, 0x00}, |
894 | // Device busy Aborted command | |
1da177e4 | 895 | /* BBD|ECC|ID */ |
8ae72044 HR |
896 | {0xd0, ABORTED_COMMAND, 0x00, 0x00}, |
897 | // Device busy Aborted command | |
1da177e4 | 898 | /* ECC|MC|MARK */ |
8ae72044 HR |
899 | {0x61, HARDWARE_ERROR, 0x00, 0x00}, |
900 | // Device fault Hardware error | |
1da177e4 | 901 | /* ICRC|ABRT */ /* NB: ICRC & !ABRT is BBD */ |
8ae72044 HR |
902 | {0x84, ABORTED_COMMAND, 0x47, 0x00}, |
903 | // Data CRC error SCSI parity error | |
1da177e4 | 904 | /* MC|ID|ABRT|TRK0|MARK */ |
8ae72044 HR |
905 | {0x37, NOT_READY, 0x04, 0x00}, |
906 | // Unit offline Not ready | |
1da177e4 | 907 | /* MCR|MARK */ |
8ae72044 HR |
908 | {0x09, NOT_READY, 0x04, 0x00}, |
909 | // Unrecovered disk error Not ready | |
1da177e4 | 910 | /* Bad address mark */ |
8ae72044 HR |
911 | {0x01, MEDIUM_ERROR, 0x13, 0x00}, |
912 | // Address mark not found for data field | |
913 | /* TRK0 - Track 0 not found */ | |
914 | {0x02, HARDWARE_ERROR, 0x00, 0x00}, | |
915 | // Hardware error | |
78062c50 | 916 | /* Abort: 0x04 is not translated here, see below */ |
1da177e4 | 917 | /* Media change request */ |
8ae72044 HR |
918 | {0x08, NOT_READY, 0x04, 0x00}, |
919 | // FIXME: faking offline | |
920 | /* SRV/IDNF - ID not found */ | |
921 | {0x10, ILLEGAL_REQUEST, 0x21, 0x00}, | |
922 | // Logical address out of range | |
923 | /* MC - Media Changed */ | |
924 | {0x20, UNIT_ATTENTION, 0x28, 0x00}, | |
925 | // Not ready to ready change, medium may have changed | |
926 | /* ECC - Uncorrectable ECC error */ | |
927 | {0x40, MEDIUM_ERROR, 0x11, 0x04}, | |
928 | // Unrecovered read error | |
1da177e4 | 929 | /* BBD - block marked bad */ |
8ae72044 HR |
930 | {0x80, MEDIUM_ERROR, 0x11, 0x04}, |
931 | // Block marked bad Medium error, unrecovered read error | |
1da177e4 LT |
932 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
933 | }; | |
98ac62de | 934 | static const unsigned char stat_table[][4] = { |
1da177e4 | 935 | /* Must be first because BUSY means no other bits valid */ |
8ae72044 HR |
936 | {0x80, ABORTED_COMMAND, 0x47, 0x00}, |
937 | // Busy, fake parity for now | |
938 | {0x40, ILLEGAL_REQUEST, 0x21, 0x04}, | |
939 | // Device ready, unaligned write command | |
940 | {0x20, HARDWARE_ERROR, 0x44, 0x00}, | |
941 | // Device fault, internal target failure | |
942 | {0x08, ABORTED_COMMAND, 0x47, 0x00}, | |
943 | // Timed out in xfer, fake parity for now | |
944 | {0x04, RECOVERED_ERROR, 0x11, 0x00}, | |
945 | // Recovered ECC error Medium error, recovered | |
1da177e4 LT |
946 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
947 | }; | |
1da177e4 | 948 | |
1da177e4 LT |
949 | /* |
950 | * Is this an error we can process/parse | |
951 | */ | |
b095518e JG |
952 | if (drv_stat & ATA_BUSY) { |
953 | drv_err = 0; /* Ignore the err bits, they're invalid */ | |
1da177e4 | 954 | } |
b095518e JG |
955 | |
956 | if (drv_err) { | |
957 | /* Look for drv_err */ | |
958 | for (i = 0; sense_table[i][0] != 0xFF; i++) { | |
959 | /* Look for best matches first */ | |
2e9edbf8 | 960 | if ((sense_table[i][0] & drv_err) == |
b095518e JG |
961 | sense_table[i][0]) { |
962 | *sk = sense_table[i][1]; | |
963 | *asc = sense_table[i][2]; | |
964 | *ascq = sense_table[i][3]; | |
965 | goto translate_done; | |
966 | } | |
967 | } | |
1da177e4 | 968 | } |
b095518e | 969 | |
78062c50 GG |
970 | /* |
971 | * Fall back to interpreting status bits. Note that if the drv_err | |
972 | * has only the ABRT bit set, we decode drv_stat. ABRT by itself | |
973 | * is not descriptive enough. | |
974 | */ | |
b095518e JG |
975 | for (i = 0; stat_table[i][0] != 0xFF; i++) { |
976 | if (stat_table[i][0] & drv_stat) { | |
977 | *sk = stat_table[i][1]; | |
978 | *asc = stat_table[i][2]; | |
979 | *ascq = stat_table[i][3]; | |
980 | goto translate_done; | |
1da177e4 | 981 | } |
b095518e | 982 | } |
b095518e | 983 | |
78062c50 GG |
984 | /* |
985 | * We need a sensible error return here, which is tricky, and one | |
986 | * that won't cause people to do things like return a disk wrongly. | |
987 | */ | |
2d202024 AC |
988 | *sk = ABORTED_COMMAND; |
989 | *asc = 0x00; | |
990 | *ascq = 0x00; | |
b095518e JG |
991 | |
992 | translate_done: | |
246619da TH |
993 | if (verbose) |
994 | printk(KERN_ERR "ata%u: translated ATA stat/err 0x%02x/%02x " | |
995 | "to SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n", | |
996 | id, drv_stat, drv_err, *sk, *asc, *ascq); | |
b095518e JG |
997 | return; |
998 | } | |
999 | ||
1000 | /* | |
750426aa | 1001 | * ata_gen_passthru_sense - Generate check condition sense block. |
b095518e JG |
1002 | * @qc: Command that completed. |
1003 | * | |
1004 | * This function is specific to the ATA descriptor format sense | |
1005 | * block specified for the ATA pass through commands. Regardless | |
1006 | * of whether the command errored or not, return a sense | |
1007 | * block. Copy all controller registers into the sense | |
84a9a8cd GG |
1008 | * block. If there was no error, we get the request from an ATA |
1009 | * passthrough command, so we use the following sense data: | |
1010 | * sk = RECOVERED ERROR | |
1011 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE | |
1012 | * | |
b095518e JG |
1013 | * |
1014 | * LOCKING: | |
750426aa | 1015 | * None. |
b095518e | 1016 | */ |
750426aa | 1017 | static void ata_gen_passthru_sense(struct ata_queued_cmd *qc) |
b095518e JG |
1018 | { |
1019 | struct scsi_cmnd *cmd = qc->scsicmd; | |
e61e0672 | 1020 | struct ata_taskfile *tf = &qc->result_tf; |
b095518e JG |
1021 | unsigned char *sb = cmd->sense_buffer; |
1022 | unsigned char *desc = sb + 8; | |
246619da | 1023 | int verbose = qc->ap->ops->error_handler == NULL; |
b525e773 | 1024 | u8 sense_key, asc, ascq; |
b095518e JG |
1025 | |
1026 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); | |
1027 | ||
0e5dec47 | 1028 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
b095518e | 1029 | |
b095518e JG |
1030 | /* |
1031 | * Use ata_to_sense_error() to map status register bits | |
1032 | * onto sense key, asc & ascq. | |
1033 | */ | |
058e55e1 TH |
1034 | if (qc->err_mask || |
1035 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { | |
44877b4e | 1036 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, |
b525e773 | 1037 | &sense_key, &asc, &ascq, verbose); |
06dbde5f | 1038 | ata_scsi_set_sense(qc->dev, cmd, sense_key, asc, ascq); |
84a9a8cd | 1039 | } else { |
11093cb1 HR |
1040 | /* |
1041 | * ATA PASS-THROUGH INFORMATION AVAILABLE | |
1042 | * Always in descriptor format sense. | |
1043 | */ | |
1044 | scsi_build_sense_buffer(1, cmd->sense_buffer, | |
1045 | RECOVERED_ERROR, 0, 0x1D); | |
1da177e4 LT |
1046 | } |
1047 | ||
11093cb1 HR |
1048 | if ((cmd->sense_buffer[0] & 0x7f) >= 0x72) { |
1049 | u8 len; | |
1050 | ||
1051 | /* descriptor format */ | |
1052 | len = sb[7]; | |
1053 | desc = (char *)scsi_sense_desc_find(sb, len + 8, 9); | |
1054 | if (!desc) { | |
1055 | if (SCSI_SENSE_BUFFERSIZE < len + 14) | |
1056 | return; | |
1057 | sb[7] = len + 14; | |
1058 | desc = sb + 8 + len; | |
1059 | } | |
1060 | desc[0] = 9; | |
1061 | desc[1] = 12; | |
1062 | /* | |
1063 | * Copy registers into sense buffer. | |
1064 | */ | |
1065 | desc[2] = 0x00; | |
1066 | desc[3] = tf->feature; /* == error reg */ | |
1067 | desc[5] = tf->nsect; | |
1068 | desc[7] = tf->lbal; | |
1069 | desc[9] = tf->lbam; | |
1070 | desc[11] = tf->lbah; | |
1071 | desc[12] = tf->device; | |
1072 | desc[13] = tf->command; /* == status reg */ | |
b095518e | 1073 | |
11093cb1 HR |
1074 | /* |
1075 | * Fill in Extend bit, and the high order bytes | |
1076 | * if applicable. | |
1077 | */ | |
1078 | if (tf->flags & ATA_TFLAG_LBA48) { | |
1079 | desc[2] |= 0x01; | |
1080 | desc[4] = tf->hob_nsect; | |
1081 | desc[6] = tf->hob_lbal; | |
1082 | desc[8] = tf->hob_lbam; | |
1083 | desc[10] = tf->hob_lbah; | |
1084 | } | |
1085 | } else { | |
1086 | /* Fixed sense format */ | |
1087 | desc[0] = tf->feature; | |
1088 | desc[1] = tf->command; /* status */ | |
1089 | desc[2] = tf->device; | |
1090 | desc[3] = tf->nsect; | |
1091 | desc[0] = 0; | |
1092 | if (tf->flags & ATA_TFLAG_LBA48) { | |
1093 | desc[8] |= 0x80; | |
1094 | if (tf->hob_nsect) | |
1095 | desc[8] |= 0x40; | |
1096 | if (tf->hob_lbal || tf->hob_lbam || tf->hob_lbah) | |
1097 | desc[8] |= 0x20; | |
1098 | } | |
1099 | desc[9] = tf->lbal; | |
1100 | desc[10] = tf->lbam; | |
1101 | desc[11] = tf->lbah; | |
1da177e4 | 1102 | } |
b095518e | 1103 | } |
1da177e4 | 1104 | |
b095518e | 1105 | /** |
750426aa | 1106 | * ata_gen_ata_sense - generate a SCSI fixed sense block |
b095518e JG |
1107 | * @qc: Command that we are erroring out |
1108 | * | |
d25614ba | 1109 | * Generate sense block for a failed ATA command @qc. Descriptor |
25985edc | 1110 | * format is used to accommodate LBA48 block address. |
b095518e JG |
1111 | * |
1112 | * LOCKING: | |
750426aa | 1113 | * None. |
b095518e | 1114 | */ |
750426aa | 1115 | static void ata_gen_ata_sense(struct ata_queued_cmd *qc) |
b095518e | 1116 | { |
d25614ba | 1117 | struct ata_device *dev = qc->dev; |
b095518e | 1118 | struct scsi_cmnd *cmd = qc->scsicmd; |
e61e0672 | 1119 | struct ata_taskfile *tf = &qc->result_tf; |
b095518e | 1120 | unsigned char *sb = cmd->sense_buffer; |
246619da | 1121 | int verbose = qc->ap->ops->error_handler == NULL; |
d25614ba | 1122 | u64 block; |
b525e773 | 1123 | u8 sense_key, asc, ascq; |
b095518e JG |
1124 | |
1125 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); | |
1126 | ||
0e5dec47 | 1127 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
b095518e | 1128 | |
59f68474 HR |
1129 | if (ata_dev_disabled(dev)) { |
1130 | /* Device disabled after error recovery */ | |
1131 | /* LOGICAL UNIT NOT READY, HARD RESET REQUIRED */ | |
1132 | ata_scsi_set_sense(dev, cmd, NOT_READY, 0x04, 0x21); | |
1133 | return; | |
1134 | } | |
d25614ba | 1135 | /* Use ata_to_sense_error() to map status register bits |
b095518e JG |
1136 | * onto sense key, asc & ascq. |
1137 | */ | |
058e55e1 TH |
1138 | if (qc->err_mask || |
1139 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { | |
44877b4e | 1140 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, |
b525e773 | 1141 | &sense_key, &asc, &ascq, verbose); |
06dbde5f | 1142 | ata_scsi_set_sense(dev, cmd, sense_key, asc, ascq); |
5e6acd1c HR |
1143 | } else { |
1144 | /* Could not decode error */ | |
1145 | ata_dev_warn(dev, "could not decode error status 0x%x err_mask 0x%x\n", | |
1146 | tf->command, qc->err_mask); | |
06dbde5f | 1147 | ata_scsi_set_sense(dev, cmd, ABORTED_COMMAND, 0, 0); |
5e6acd1c | 1148 | return; |
1da177e4 | 1149 | } |
1da177e4 | 1150 | |
d25614ba | 1151 | block = ata_tf_read_block(&qc->result_tf, dev); |
cffd1ee9 HR |
1152 | if (block == U64_MAX) |
1153 | return; | |
a7dac447 | 1154 | |
cf8b49b0 | 1155 | scsi_set_sense_information(sb, SCSI_SENSE_BUFFERSIZE, block); |
1da177e4 LT |
1156 | } |
1157 | ||
a6cce2a7 BK |
1158 | static void ata_scsi_sdev_config(struct scsi_device *sdev) |
1159 | { | |
1160 | sdev->use_10_for_rw = 1; | |
1161 | sdev->use_10_for_ms = 1; | |
3c6bdaea | 1162 | sdev->no_report_opcodes = 1; |
5db44863 | 1163 | sdev->no_write_same = 1; |
31cc23b3 TH |
1164 | |
1165 | /* Schedule policy is determined by ->qc_defer() callback and | |
1166 | * it needs to see every deferred qc. Set dev_blocked to 1 to | |
1167 | * prevent SCSI midlayer from automatically deferring | |
1168 | * requests. | |
1169 | */ | |
1170 | sdev->max_device_blocked = 1; | |
a6cce2a7 BK |
1171 | } |
1172 | ||
fa2fc7f4 JB |
1173 | /** |
1174 | * atapi_drain_needed - Check whether data transfer may overflow | |
73fd8b6d | 1175 | * @rq: request to be checked |
fa2fc7f4 JB |
1176 | * |
1177 | * ATAPI commands which transfer variable length data to host | |
c9b5560a | 1178 | * might overflow due to application error or hardware bug. This |
fa2fc7f4 JB |
1179 | * function checks whether overflow should be drained and ignored |
1180 | * for @request. | |
1181 | * | |
1182 | * LOCKING: | |
1183 | * None. | |
1184 | * | |
1185 | * RETURNS: | |
1186 | * 1 if ; otherwise, 0. | |
1187 | */ | |
1188 | static int atapi_drain_needed(struct request *rq) | |
1189 | { | |
33659ebb | 1190 | if (likely(rq->cmd_type != REQ_TYPE_BLOCK_PC)) |
fa2fc7f4 JB |
1191 | return 0; |
1192 | ||
7b6d91da | 1193 | if (!blk_rq_bytes(rq) || (rq->cmd_flags & REQ_WRITE)) |
fa2fc7f4 JB |
1194 | return 0; |
1195 | ||
1196 | return atapi_cmd_type(rq->cmd[0]) == ATAPI_MISC; | |
1197 | } | |
1198 | ||
1199 | static int ata_scsi_dev_config(struct scsi_device *sdev, | |
1200 | struct ata_device *dev) | |
a6cce2a7 | 1201 | { |
900e599e | 1202 | struct request_queue *q = sdev->request_queue; |
1203 | ||
45fabbb7 EO |
1204 | if (!ata_id_has_unload(dev->id)) |
1205 | dev->flags |= ATA_DFLAG_NO_UNLOAD; | |
1206 | ||
914ed354 | 1207 | /* configure max sectors */ |
900e599e | 1208 | blk_queue_max_hw_sectors(q, dev->max_sectors); |
a6cce2a7 | 1209 | |
fa2fc7f4 | 1210 | if (dev->class == ATA_DEV_ATAPI) { |
fa2fc7f4 JB |
1211 | void *buf; |
1212 | ||
729a6a30 TH |
1213 | sdev->sector_size = ATA_SECT_SIZE; |
1214 | ||
1215 | /* set DMA padding */ | |
900e599e | 1216 | blk_queue_update_dma_pad(q, ATA_DMA_PAD_SZ - 1); |
fa2fc7f4 JB |
1217 | |
1218 | /* configure draining */ | |
1219 | buf = kmalloc(ATAPI_MAX_DRAIN, q->bounce_gfp | GFP_KERNEL); | |
1220 | if (!buf) { | |
a9a79dfe | 1221 | ata_dev_err(dev, "drain buffer allocation failed\n"); |
fa2fc7f4 JB |
1222 | return -ENOMEM; |
1223 | } | |
1224 | ||
1225 | blk_queue_dma_drain(q, atapi_drain_needed, buf, ATAPI_MAX_DRAIN); | |
1226 | } else { | |
295124dc | 1227 | sdev->sector_size = ata_id_logical_sector_size(dev->id); |
d8cf5389 | 1228 | sdev->manage_start_stop = 1; |
dde20207 | 1229 | } |
d8cf5389 | 1230 | |
729a6a30 TH |
1231 | /* |
1232 | * ata_pio_sectors() expects buffer for each sector to not cross | |
1233 | * page boundary. Enforce it by requiring buffers to be sector | |
1234 | * aligned, which works iff sector_size is not larger than | |
1235 | * PAGE_SIZE. ATAPI devices also need the alignment as | |
1236 | * IDENTIFY_PACKET is executed as ATA_PROT_PIO. | |
1237 | */ | |
1238 | if (sdev->sector_size > PAGE_SIZE) | |
a9a79dfe | 1239 | ata_dev_warn(dev, |
729a6a30 TH |
1240 | "sector_size=%u > PAGE_SIZE, PIO may malfunction\n", |
1241 | sdev->sector_size); | |
1242 | ||
900e599e | 1243 | blk_queue_update_dma_alignment(q, sdev->sector_size - 1); |
729a6a30 | 1244 | |
f26792d5 JG |
1245 | if (dev->flags & ATA_DFLAG_AN) |
1246 | set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events); | |
1247 | ||
a6e6ce8e TH |
1248 | if (dev->flags & ATA_DFLAG_NCQ) { |
1249 | int depth; | |
1250 | ||
1251 | depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id)); | |
1252 | depth = min(ATA_MAX_QUEUE - 1, depth); | |
db5ed4df | 1253 | scsi_change_queue_depth(sdev, depth); |
a6e6ce8e | 1254 | } |
fa2fc7f4 | 1255 | |
900e599e | 1256 | blk_queue_flush_queueable(q, false); |
1257 | ||
295124dc | 1258 | dev->sdev = sdev; |
fa2fc7f4 | 1259 | return 0; |
a6cce2a7 BK |
1260 | } |
1261 | ||
1da177e4 LT |
1262 | /** |
1263 | * ata_scsi_slave_config - Set SCSI device attributes | |
1264 | * @sdev: SCSI device to examine | |
1265 | * | |
1266 | * This is called before we actually start reading | |
1267 | * and writing to the device, to configure certain | |
1268 | * SCSI mid-layer behaviors. | |
1269 | * | |
1270 | * LOCKING: | |
1271 | * Defined by SCSI layer. We don't really care. | |
1272 | */ | |
1273 | ||
1274 | int ata_scsi_slave_config(struct scsi_device *sdev) | |
1275 | { | |
31534363 TH |
1276 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
1277 | struct ata_device *dev = __ata_scsi_find_dev(ap, sdev); | |
fa2fc7f4 | 1278 | int rc = 0; |
31534363 | 1279 | |
a6cce2a7 | 1280 | ata_scsi_sdev_config(sdev); |
1da177e4 | 1281 | |
31534363 | 1282 | if (dev) |
fa2fc7f4 | 1283 | rc = ata_scsi_dev_config(sdev, dev); |
1da177e4 | 1284 | |
fa2fc7f4 | 1285 | return rc; |
1da177e4 LT |
1286 | } |
1287 | ||
83c47bcb TH |
1288 | /** |
1289 | * ata_scsi_slave_destroy - SCSI device is about to be destroyed | |
1290 | * @sdev: SCSI device to be destroyed | |
1291 | * | |
1292 | * @sdev is about to be destroyed for hot/warm unplugging. If | |
1293 | * this unplugging was initiated by libata as indicated by NULL | |
1294 | * dev->sdev, this function doesn't have to do anything. | |
1295 | * Otherwise, SCSI layer initiated warm-unplug is in progress. | |
1296 | * Clear dev->sdev, schedule the device for ATA detach and invoke | |
1297 | * EH. | |
1298 | * | |
1299 | * LOCKING: | |
1300 | * Defined by SCSI layer. We don't really care. | |
1301 | */ | |
1302 | void ata_scsi_slave_destroy(struct scsi_device *sdev) | |
1303 | { | |
1304 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
fa2fc7f4 | 1305 | struct request_queue *q = sdev->request_queue; |
83c47bcb TH |
1306 | unsigned long flags; |
1307 | struct ata_device *dev; | |
1308 | ||
1309 | if (!ap->ops->error_handler) | |
1310 | return; | |
1311 | ||
ba6a1308 | 1312 | spin_lock_irqsave(ap->lock, flags); |
83c47bcb TH |
1313 | dev = __ata_scsi_find_dev(ap, sdev); |
1314 | if (dev && dev->sdev) { | |
1315 | /* SCSI device already in CANCEL state, no need to offline it */ | |
1316 | dev->sdev = NULL; | |
1317 | dev->flags |= ATA_DFLAG_DETACH; | |
1318 | ata_port_schedule_eh(ap); | |
1319 | } | |
ba6a1308 | 1320 | spin_unlock_irqrestore(ap->lock, flags); |
fa2fc7f4 JB |
1321 | |
1322 | kfree(q->dma_drain_buffer); | |
1323 | q->dma_drain_buffer = NULL; | |
1324 | q->dma_drain_size = 0; | |
83c47bcb TH |
1325 | } |
1326 | ||
a6e6ce8e | 1327 | /** |
f6e67035 | 1328 | * __ata_change_queue_depth - helper for ata_scsi_change_queue_depth |
6d2dd054 MPS |
1329 | * @ap: ATA port to which the device change the queue depth |
1330 | * @sdev: SCSI device to configure queue depth for | |
1331 | * @queue_depth: new queue depth | |
a6e6ce8e | 1332 | * |
f6e67035 DW |
1333 | * libsas and libata have different approaches for associating a sdev to |
1334 | * its ata_port. | |
a6e6ce8e | 1335 | * |
a6e6ce8e | 1336 | */ |
f6e67035 | 1337 | int __ata_change_queue_depth(struct ata_port *ap, struct scsi_device *sdev, |
db5ed4df | 1338 | int queue_depth) |
a6e6ce8e | 1339 | { |
a6e6ce8e | 1340 | struct ata_device *dev; |
360f654e | 1341 | unsigned long flags; |
a6e6ce8e | 1342 | |
c3c70c44 | 1343 | if (queue_depth < 1 || queue_depth == sdev->queue_depth) |
a6e6ce8e TH |
1344 | return sdev->queue_depth; |
1345 | ||
1346 | dev = ata_scsi_find_dev(ap, sdev); | |
1347 | if (!dev || !ata_dev_enabled(dev)) | |
1348 | return sdev->queue_depth; | |
1349 | ||
c3c70c44 | 1350 | /* NCQ enabled? */ |
360f654e | 1351 | spin_lock_irqsave(ap->lock, flags); |
c3c70c44 TH |
1352 | dev->flags &= ~ATA_DFLAG_NCQ_OFF; |
1353 | if (queue_depth == 1 || !ata_ncq_enabled(dev)) { | |
360f654e | 1354 | dev->flags |= ATA_DFLAG_NCQ_OFF; |
c3c70c44 TH |
1355 | queue_depth = 1; |
1356 | } | |
360f654e TH |
1357 | spin_unlock_irqrestore(ap->lock, flags); |
1358 | ||
c3c70c44 TH |
1359 | /* limit and apply queue depth */ |
1360 | queue_depth = min(queue_depth, sdev->host->can_queue); | |
1361 | queue_depth = min(queue_depth, ata_id_queue_depth(dev->id)); | |
1362 | queue_depth = min(queue_depth, ATA_MAX_QUEUE - 1); | |
1363 | ||
1364 | if (sdev->queue_depth == queue_depth) | |
1365 | return -EINVAL; | |
1366 | ||
db5ed4df | 1367 | return scsi_change_queue_depth(sdev, queue_depth); |
a6e6ce8e TH |
1368 | } |
1369 | ||
f6e67035 DW |
1370 | /** |
1371 | * ata_scsi_change_queue_depth - SCSI callback for queue depth config | |
1372 | * @sdev: SCSI device to configure queue depth for | |
1373 | * @queue_depth: new queue depth | |
f6e67035 DW |
1374 | * |
1375 | * This is libata standard hostt->change_queue_depth callback. | |
1376 | * SCSI will call into this callback when user tries to set queue | |
1377 | * depth via sysfs. | |
1378 | * | |
1379 | * LOCKING: | |
1380 | * SCSI layer (we don't care) | |
1381 | * | |
1382 | * RETURNS: | |
1383 | * Newly configured queue depth. | |
1384 | */ | |
db5ed4df | 1385 | int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth) |
f6e67035 DW |
1386 | { |
1387 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
1388 | ||
db5ed4df | 1389 | return __ata_change_queue_depth(ap, sdev, queue_depth); |
f6e67035 DW |
1390 | } |
1391 | ||
972dcafb DG |
1392 | /** |
1393 | * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command | |
1394 | * @qc: Storage for translated ATA taskfile | |
972dcafb DG |
1395 | * |
1396 | * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY | |
1397 | * (to start). Perhaps these commands should be preceded by | |
1398 | * CHECK POWER MODE to see what power mode the device is already in. | |
1399 | * [See SAT revision 5 at www.t10.org] | |
1400 | * | |
1401 | * LOCKING: | |
cca3974e | 1402 | * spin_lock_irqsave(host lock) |
972dcafb DG |
1403 | * |
1404 | * RETURNS: | |
1405 | * Zero on success, non-zero on error. | |
1406 | */ | |
ad706991 | 1407 | static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc) |
972dcafb | 1408 | { |
542b1444 | 1409 | struct scsi_cmnd *scmd = qc->scsicmd; |
972dcafb | 1410 | struct ata_taskfile *tf = &qc->tf; |
ad706991 | 1411 | const u8 *cdb = scmd->cmnd; |
bcfc867d | 1412 | u16 fp; |
0df10b84 | 1413 | u8 bp = 0xff; |
972dcafb | 1414 | |
bcfc867d HR |
1415 | if (scmd->cmd_len < 5) { |
1416 | fp = 4; | |
2e5704f6 | 1417 | goto invalid_fld; |
bcfc867d | 1418 | } |
2e5704f6 | 1419 | |
972dcafb DG |
1420 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
1421 | tf->protocol = ATA_PROT_NODATA; | |
542b1444 | 1422 | if (cdb[1] & 0x1) { |
972dcafb DG |
1423 | ; /* ignore IMMED bit, violates sat-r05 */ |
1424 | } | |
bcfc867d HR |
1425 | if (cdb[4] & 0x2) { |
1426 | fp = 4; | |
0df10b84 | 1427 | bp = 1; |
ae006510 | 1428 | goto invalid_fld; /* LOEJ bit set not supported */ |
bcfc867d HR |
1429 | } |
1430 | if (((cdb[4] >> 4) & 0xf) != 0) { | |
1431 | fp = 4; | |
0df10b84 | 1432 | bp = 3; |
ae006510 | 1433 | goto invalid_fld; /* power conditions not supported */ |
bcfc867d | 1434 | } |
e31e8531 | 1435 | |
542b1444 | 1436 | if (cdb[4] & 0x1) { |
972dcafb | 1437 | tf->nsect = 1; /* 1 sector, lba=0 */ |
9d5b1302 AL |
1438 | |
1439 | if (qc->dev->flags & ATA_DFLAG_LBA) { | |
c44078c0 | 1440 | tf->flags |= ATA_TFLAG_LBA; |
9d5b1302 AL |
1441 | |
1442 | tf->lbah = 0x0; | |
1443 | tf->lbam = 0x0; | |
1444 | tf->lbal = 0x0; | |
1445 | tf->device |= ATA_LBA; | |
1446 | } else { | |
1447 | /* CHS */ | |
1448 | tf->lbal = 0x1; /* sect */ | |
1449 | tf->lbam = 0x0; /* cyl low */ | |
1450 | tf->lbah = 0x0; /* cyl high */ | |
1451 | } | |
1452 | ||
972dcafb | 1453 | tf->command = ATA_CMD_VERIFY; /* READ VERIFY */ |
920a4b10 | 1454 | } else { |
2a6e58d2 RW |
1455 | /* Some odd clown BIOSen issue spindown on power off (ACPI S4 |
1456 | * or S5) causing some drives to spin up and down again. | |
1457 | */ | |
1458 | if ((qc->ap->flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) && | |
1459 | system_state == SYSTEM_POWER_OFF) | |
1460 | goto skip; | |
1461 | ||
1462 | if ((qc->ap->flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) && | |
1463 | system_entering_hibernation()) | |
1464 | goto skip; | |
1465 | ||
78981a7c RH |
1466 | /* Issue ATA STANDBY IMMEDIATE command */ |
1467 | tf->command = ATA_CMD_STANDBYNOW1; | |
920a4b10 | 1468 | } |
78981a7c | 1469 | |
972dcafb DG |
1470 | /* |
1471 | * Standby and Idle condition timers could be implemented but that | |
1472 | * would require libata to implement the Power condition mode page | |
1473 | * and allow the user to change it. Changing mode pages requires | |
1474 | * MODE SELECT to be implemented. | |
1475 | */ | |
1476 | ||
1477 | return 0; | |
ae006510 | 1478 | |
2a6e58d2 | 1479 | invalid_fld: |
0df10b84 | 1480 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); |
ae006510 | 1481 | return 1; |
2a6e58d2 RW |
1482 | skip: |
1483 | scmd->result = SAM_STAT_GOOD; | |
1484 | return 1; | |
972dcafb DG |
1485 | } |
1486 | ||
1487 | ||
1da177e4 LT |
1488 | /** |
1489 | * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command | |
1490 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1491 | * |
1492 | * Sets up an ATA taskfile to issue FLUSH CACHE or | |
1493 | * FLUSH CACHE EXT. | |
1494 | * | |
1495 | * LOCKING: | |
cca3974e | 1496 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1497 | * |
1498 | * RETURNS: | |
1499 | * Zero on success, non-zero on error. | |
1500 | */ | |
ad706991 | 1501 | static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc) |
1da177e4 LT |
1502 | { |
1503 | struct ata_taskfile *tf = &qc->tf; | |
1504 | ||
1505 | tf->flags |= ATA_TFLAG_DEVICE; | |
1506 | tf->protocol = ATA_PROT_NODATA; | |
1507 | ||
6fc49adb | 1508 | if (qc->dev->flags & ATA_DFLAG_FLUSH_EXT) |
1da177e4 LT |
1509 | tf->command = ATA_CMD_FLUSH_EXT; |
1510 | else | |
1511 | tf->command = ATA_CMD_FLUSH; | |
1512 | ||
b666da35 TH |
1513 | /* flush is critical for IO integrity, consider it an IO command */ |
1514 | qc->flags |= ATA_QCFLAG_IO; | |
1515 | ||
1da177e4 LT |
1516 | return 0; |
1517 | } | |
1518 | ||
3aef5231 AL |
1519 | /** |
1520 | * scsi_6_lba_len - Get LBA and transfer length | |
542b1444 | 1521 | * @cdb: SCSI command to translate |
3aef5231 AL |
1522 | * |
1523 | * Calculate LBA and transfer length for 6-byte commands. | |
1524 | * | |
1525 | * RETURNS: | |
1526 | * @plba: the LBA | |
1527 | * @plen: the transfer length | |
1528 | */ | |
542b1444 | 1529 | static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 AL |
1530 | { |
1531 | u64 lba = 0; | |
6c7b7d2b | 1532 | u32 len; |
3aef5231 AL |
1533 | |
1534 | VPRINTK("six-byte command\n"); | |
1535 | ||
6c7b7d2b | 1536 | lba |= ((u64)(cdb[1] & 0x1f)) << 16; |
542b1444 TH |
1537 | lba |= ((u64)cdb[2]) << 8; |
1538 | lba |= ((u64)cdb[3]); | |
3aef5231 | 1539 | |
6c7b7d2b | 1540 | len = cdb[4]; |
3aef5231 AL |
1541 | |
1542 | *plba = lba; | |
1543 | *plen = len; | |
1544 | } | |
1545 | ||
1546 | /** | |
1547 | * scsi_10_lba_len - Get LBA and transfer length | |
542b1444 | 1548 | * @cdb: SCSI command to translate |
3aef5231 AL |
1549 | * |
1550 | * Calculate LBA and transfer length for 10-byte commands. | |
1551 | * | |
1552 | * RETURNS: | |
1553 | * @plba: the LBA | |
1554 | * @plen: the transfer length | |
1555 | */ | |
542b1444 | 1556 | static void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 AL |
1557 | { |
1558 | u64 lba = 0; | |
1559 | u32 len = 0; | |
1560 | ||
1561 | VPRINTK("ten-byte command\n"); | |
1562 | ||
542b1444 TH |
1563 | lba |= ((u64)cdb[2]) << 24; |
1564 | lba |= ((u64)cdb[3]) << 16; | |
1565 | lba |= ((u64)cdb[4]) << 8; | |
1566 | lba |= ((u64)cdb[5]); | |
3aef5231 | 1567 | |
542b1444 TH |
1568 | len |= ((u32)cdb[7]) << 8; |
1569 | len |= ((u32)cdb[8]); | |
3aef5231 AL |
1570 | |
1571 | *plba = lba; | |
1572 | *plen = len; | |
1573 | } | |
1574 | ||
1575 | /** | |
1576 | * scsi_16_lba_len - Get LBA and transfer length | |
542b1444 | 1577 | * @cdb: SCSI command to translate |
3aef5231 AL |
1578 | * |
1579 | * Calculate LBA and transfer length for 16-byte commands. | |
1580 | * | |
1581 | * RETURNS: | |
1582 | * @plba: the LBA | |
1583 | * @plen: the transfer length | |
1584 | */ | |
542b1444 | 1585 | static void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 AL |
1586 | { |
1587 | u64 lba = 0; | |
1588 | u32 len = 0; | |
1589 | ||
1590 | VPRINTK("sixteen-byte command\n"); | |
1591 | ||
542b1444 TH |
1592 | lba |= ((u64)cdb[2]) << 56; |
1593 | lba |= ((u64)cdb[3]) << 48; | |
1594 | lba |= ((u64)cdb[4]) << 40; | |
1595 | lba |= ((u64)cdb[5]) << 32; | |
1596 | lba |= ((u64)cdb[6]) << 24; | |
1597 | lba |= ((u64)cdb[7]) << 16; | |
1598 | lba |= ((u64)cdb[8]) << 8; | |
1599 | lba |= ((u64)cdb[9]); | |
3aef5231 | 1600 | |
542b1444 TH |
1601 | len |= ((u32)cdb[10]) << 24; |
1602 | len |= ((u32)cdb[11]) << 16; | |
1603 | len |= ((u32)cdb[12]) << 8; | |
1604 | len |= ((u32)cdb[13]); | |
3aef5231 AL |
1605 | |
1606 | *plba = lba; | |
1607 | *plen = len; | |
1608 | } | |
1609 | ||
1da177e4 LT |
1610 | /** |
1611 | * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one | |
1612 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1613 | * |
1614 | * Converts SCSI VERIFY command to an ATA READ VERIFY command. | |
1615 | * | |
1616 | * LOCKING: | |
cca3974e | 1617 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1618 | * |
1619 | * RETURNS: | |
1620 | * Zero on success, non-zero on error. | |
1621 | */ | |
ad706991 | 1622 | static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 1623 | { |
542b1444 | 1624 | struct scsi_cmnd *scmd = qc->scsicmd; |
1da177e4 | 1625 | struct ata_taskfile *tf = &qc->tf; |
8bf62ece | 1626 | struct ata_device *dev = qc->dev; |
1da177e4 | 1627 | u64 dev_sectors = qc->dev->n_sectors; |
ad706991 | 1628 | const u8 *cdb = scmd->cmnd; |
3aef5231 AL |
1629 | u64 block; |
1630 | u32 n_block; | |
bcfc867d | 1631 | u16 fp; |
1da177e4 LT |
1632 | |
1633 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
1634 | tf->protocol = ATA_PROT_NODATA; | |
1da177e4 | 1635 | |
2e5704f6 | 1636 | if (cdb[0] == VERIFY) { |
bcfc867d HR |
1637 | if (scmd->cmd_len < 10) { |
1638 | fp = 9; | |
2e5704f6 | 1639 | goto invalid_fld; |
bcfc867d | 1640 | } |
542b1444 | 1641 | scsi_10_lba_len(cdb, &block, &n_block); |
2e5704f6 | 1642 | } else if (cdb[0] == VERIFY_16) { |
bcfc867d HR |
1643 | if (scmd->cmd_len < 16) { |
1644 | fp = 15; | |
2e5704f6 | 1645 | goto invalid_fld; |
bcfc867d | 1646 | } |
542b1444 | 1647 | scsi_16_lba_len(cdb, &block, &n_block); |
bcfc867d HR |
1648 | } else { |
1649 | fp = 0; | |
ae006510 | 1650 | goto invalid_fld; |
bcfc867d | 1651 | } |
1da177e4 | 1652 | |
8bf62ece | 1653 | if (!n_block) |
ae006510 | 1654 | goto nothing_to_do; |
8bf62ece | 1655 | if (block >= dev_sectors) |
ae006510 | 1656 | goto out_of_range; |
8bf62ece | 1657 | if ((block + n_block) > dev_sectors) |
ae006510 | 1658 | goto out_of_range; |
1da177e4 | 1659 | |
07506697 AL |
1660 | if (dev->flags & ATA_DFLAG_LBA) { |
1661 | tf->flags |= ATA_TFLAG_LBA; | |
1662 | ||
c6a33e24 AL |
1663 | if (lba_28_ok(block, n_block)) { |
1664 | /* use LBA28 */ | |
1665 | tf->command = ATA_CMD_VERIFY; | |
1666 | tf->device |= (block >> 24) & 0xf; | |
1667 | } else if (lba_48_ok(block, n_block)) { | |
1668 | if (!(dev->flags & ATA_DFLAG_LBA48)) | |
1669 | goto out_of_range; | |
07506697 AL |
1670 | |
1671 | /* use LBA48 */ | |
1672 | tf->flags |= ATA_TFLAG_LBA48; | |
8bf62ece | 1673 | tf->command = ATA_CMD_VERIFY_EXT; |
1da177e4 | 1674 | |
8bf62ece | 1675 | tf->hob_nsect = (n_block >> 8) & 0xff; |
1da177e4 | 1676 | |
8bf62ece AL |
1677 | tf->hob_lbah = (block >> 40) & 0xff; |
1678 | tf->hob_lbam = (block >> 32) & 0xff; | |
1679 | tf->hob_lbal = (block >> 24) & 0xff; | |
c6a33e24 AL |
1680 | } else |
1681 | /* request too large even for LBA48 */ | |
1682 | goto out_of_range; | |
8bf62ece AL |
1683 | |
1684 | tf->nsect = n_block & 0xff; | |
1da177e4 | 1685 | |
8bf62ece AL |
1686 | tf->lbah = (block >> 16) & 0xff; |
1687 | tf->lbam = (block >> 8) & 0xff; | |
1688 | tf->lbal = block & 0xff; | |
1da177e4 | 1689 | |
8bf62ece AL |
1690 | tf->device |= ATA_LBA; |
1691 | } else { | |
1692 | /* CHS */ | |
1693 | u32 sect, head, cyl, track; | |
1694 | ||
c6a33e24 AL |
1695 | if (!lba_28_ok(block, n_block)) |
1696 | goto out_of_range; | |
07506697 | 1697 | |
8bf62ece AL |
1698 | /* Convert LBA to CHS */ |
1699 | track = (u32)block / dev->sectors; | |
1700 | cyl = track / dev->heads; | |
1701 | head = track % dev->heads; | |
1702 | sect = (u32)block % dev->sectors + 1; | |
1703 | ||
c187c4b5 AL |
1704 | DPRINTK("block %u track %u cyl %u head %u sect %u\n", |
1705 | (u32)block, track, cyl, head, sect); | |
2e9edbf8 JG |
1706 | |
1707 | /* Check whether the converted CHS can fit. | |
1708 | Cylinder: 0-65535 | |
8bf62ece AL |
1709 | Head: 0-15 |
1710 | Sector: 1-255*/ | |
2e9edbf8 | 1711 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
ae006510 | 1712 | goto out_of_range; |
2e9edbf8 | 1713 | |
8bf62ece AL |
1714 | tf->command = ATA_CMD_VERIFY; |
1715 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ | |
1716 | tf->lbal = sect; | |
1717 | tf->lbam = cyl; | |
1718 | tf->lbah = cyl >> 8; | |
1719 | tf->device |= head; | |
1720 | } | |
1da177e4 LT |
1721 | |
1722 | return 0; | |
ae006510 DG |
1723 | |
1724 | invalid_fld: | |
0df10b84 | 1725 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
ae006510 DG |
1726 | return 1; |
1727 | ||
1728 | out_of_range: | |
06dbde5f | 1729 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
ae006510 DG |
1730 | /* "Logical Block Address out of range" */ |
1731 | return 1; | |
1732 | ||
1733 | nothing_to_do: | |
542b1444 | 1734 | scmd->result = SAM_STAT_GOOD; |
ae006510 | 1735 | return 1; |
1da177e4 LT |
1736 | } |
1737 | ||
1738 | /** | |
1739 | * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one | |
1740 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1741 | * |
1742 | * Converts any of six SCSI read/write commands into the | |
1743 | * ATA counterpart, including starting sector (LBA), | |
1744 | * sector count, and taking into account the device's LBA48 | |
1745 | * support. | |
1746 | * | |
1747 | * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and | |
1748 | * %WRITE_16 are currently supported. | |
1749 | * | |
1750 | * LOCKING: | |
cca3974e | 1751 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1752 | * |
1753 | * RETURNS: | |
1754 | * Zero on success, non-zero on error. | |
1755 | */ | |
ad706991 | 1756 | static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 1757 | { |
542b1444 | 1758 | struct scsi_cmnd *scmd = qc->scsicmd; |
ad706991 | 1759 | const u8 *cdb = scmd->cmnd; |
bd056d7e | 1760 | unsigned int tf_flags = 0; |
3aef5231 AL |
1761 | u64 block; |
1762 | u32 n_block; | |
bd056d7e | 1763 | int rc; |
bcfc867d | 1764 | u16 fp = 0; |
1da177e4 | 1765 | |
542b1444 | 1766 | if (cdb[0] == WRITE_10 || cdb[0] == WRITE_6 || cdb[0] == WRITE_16) |
bd056d7e | 1767 | tf_flags |= ATA_TFLAG_WRITE; |
1da177e4 | 1768 | |
9a3dccc4 | 1769 | /* Calculate the SCSI LBA, transfer length and FUA. */ |
542b1444 | 1770 | switch (cdb[0]) { |
3aef5231 AL |
1771 | case READ_10: |
1772 | case WRITE_10: | |
bcfc867d HR |
1773 | if (unlikely(scmd->cmd_len < 10)) { |
1774 | fp = 9; | |
2e5704f6 | 1775 | goto invalid_fld; |
bcfc867d | 1776 | } |
542b1444 | 1777 | scsi_10_lba_len(cdb, &block, &n_block); |
3e451a49 | 1778 | if (cdb[1] & (1 << 3)) |
bd056d7e | 1779 | tf_flags |= ATA_TFLAG_FUA; |
3aef5231 AL |
1780 | break; |
1781 | case READ_6: | |
1782 | case WRITE_6: | |
bcfc867d HR |
1783 | if (unlikely(scmd->cmd_len < 6)) { |
1784 | fp = 5; | |
2e5704f6 | 1785 | goto invalid_fld; |
bcfc867d | 1786 | } |
542b1444 | 1787 | scsi_6_lba_len(cdb, &block, &n_block); |
c187c4b5 AL |
1788 | |
1789 | /* for 6-byte r/w commands, transfer length 0 | |
1790 | * means 256 blocks of data, not 0 block. | |
1791 | */ | |
76b2bf9b JG |
1792 | if (!n_block) |
1793 | n_block = 256; | |
3aef5231 AL |
1794 | break; |
1795 | case READ_16: | |
1796 | case WRITE_16: | |
bcfc867d HR |
1797 | if (unlikely(scmd->cmd_len < 16)) { |
1798 | fp = 15; | |
2e5704f6 | 1799 | goto invalid_fld; |
bcfc867d | 1800 | } |
542b1444 | 1801 | scsi_16_lba_len(cdb, &block, &n_block); |
3e451a49 | 1802 | if (cdb[1] & (1 << 3)) |
bd056d7e | 1803 | tf_flags |= ATA_TFLAG_FUA; |
3aef5231 AL |
1804 | break; |
1805 | default: | |
8bf62ece | 1806 | DPRINTK("no-byte command\n"); |
bcfc867d | 1807 | fp = 0; |
ae006510 | 1808 | goto invalid_fld; |
1da177e4 LT |
1809 | } |
1810 | ||
8bf62ece AL |
1811 | /* Check and compose ATA command */ |
1812 | if (!n_block) | |
c187c4b5 AL |
1813 | /* For 10-byte and 16-byte SCSI R/W commands, transfer |
1814 | * length 0 means transfer 0 block of data. | |
1815 | * However, for ATA R/W commands, sector count 0 means | |
1816 | * 256 or 65536 sectors, not 0 sectors as in SCSI. | |
f51750d5 AC |
1817 | * |
1818 | * WARNING: one or two older ATA drives treat 0 as 0... | |
c187c4b5 | 1819 | */ |
ae006510 | 1820 | goto nothing_to_do; |
1da177e4 | 1821 | |
bd056d7e | 1822 | qc->flags |= ATA_QCFLAG_IO; |
295124dc | 1823 | qc->nbytes = n_block * scmd->device->sector_size; |
1da177e4 | 1824 | |
bd056d7e TH |
1825 | rc = ata_build_rw_tf(&qc->tf, qc->dev, block, n_block, tf_flags, |
1826 | qc->tag); | |
1827 | if (likely(rc == 0)) | |
1828 | return 0; | |
ae006510 | 1829 | |
bd056d7e TH |
1830 | if (rc == -ERANGE) |
1831 | goto out_of_range; | |
1832 | /* treat all other errors as -EINVAL, fall through */ | |
ae006510 | 1833 | invalid_fld: |
0df10b84 | 1834 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
ae006510 DG |
1835 | return 1; |
1836 | ||
1837 | out_of_range: | |
06dbde5f | 1838 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
ae006510 DG |
1839 | /* "Logical Block Address out of range" */ |
1840 | return 1; | |
1841 | ||
1842 | nothing_to_do: | |
542b1444 | 1843 | scmd->result = SAM_STAT_GOOD; |
ae006510 | 1844 | return 1; |
1da177e4 LT |
1845 | } |
1846 | ||
2aa8f5d6 CH |
1847 | static void ata_qc_done(struct ata_queued_cmd *qc) |
1848 | { | |
1849 | struct scsi_cmnd *cmd = qc->scsicmd; | |
1850 | void (*done)(struct scsi_cmnd *) = qc->scsidone; | |
1851 | ||
1852 | ata_qc_free(qc); | |
1853 | done(cmd); | |
1854 | } | |
1855 | ||
77853bf2 | 1856 | static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) |
1da177e4 | 1857 | { |
c31f571d | 1858 | struct ata_port *ap = qc->ap; |
1da177e4 | 1859 | struct scsi_cmnd *cmd = qc->scsicmd; |
a7dac447 | 1860 | u8 *cdb = cmd->cmnd; |
2dcb407e | 1861 | int need_sense = (qc->err_mask != 0); |
b095518e JG |
1862 | |
1863 | /* For ATA pass thru (SAT) commands, generate a sense block if | |
1864 | * user mandated it or if there's an error. Note that if we | |
84a9a8cd GG |
1865 | * generate because the user forced us to [CK_COND =1], a check |
1866 | * condition is generated and the ATA register values are returned | |
b095518e | 1867 | * whether the command completed successfully or not. If there |
84a9a8cd GG |
1868 | * was no error, we use the following sense data: |
1869 | * sk = RECOVERED ERROR | |
1870 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE | |
b095518e | 1871 | */ |
a7dac447 | 1872 | if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) && |
25c7ce7f | 1873 | ((cdb[2] & 0x20) || need_sense)) |
750426aa | 1874 | ata_gen_passthru_sense(qc); |
5b01e4b9 HR |
1875 | else if (qc->flags & ATA_QCFLAG_SENSE_VALID) |
1876 | cmd->result = SAM_STAT_CHECK_CONDITION; | |
25c7ce7f CH |
1877 | else if (need_sense) |
1878 | ata_gen_ata_sense(qc); | |
1879 | else | |
1880 | cmd->result = SAM_STAT_GOOD; | |
1da177e4 | 1881 | |
c31f571d | 1882 | if (need_sense && !ap->ops->error_handler) |
44877b4e | 1883 | ata_dump_status(ap->print_id, &qc->result_tf); |
1da177e4 | 1884 | |
2aa8f5d6 | 1885 | ata_qc_done(qc); |
1da177e4 LT |
1886 | } |
1887 | ||
1888 | /** | |
1889 | * ata_scsi_translate - Translate then issue SCSI command to ATA device | |
1da177e4 LT |
1890 | * @dev: ATA device to which the command is addressed |
1891 | * @cmd: SCSI command to execute | |
1da177e4 LT |
1892 | * @xlat_func: Actor which translates @cmd to an ATA taskfile |
1893 | * | |
1894 | * Our ->queuecommand() function has decided that the SCSI | |
1895 | * command issued can be directly translated into an ATA | |
1896 | * command, rather than handled internally. | |
1897 | * | |
1898 | * This function sets up an ata_queued_cmd structure for the | |
1899 | * SCSI command, and sends that ata_queued_cmd to the hardware. | |
1900 | * | |
ae006510 DG |
1901 | * The xlat_func argument (actor) returns 0 if ready to execute |
1902 | * ATA command, else 1 to finish translation. If 1 is returned | |
1903 | * then cmd->result (and possibly cmd->sense_buffer) are assumed | |
1904 | * to be set reflecting an error condition or clean (early) | |
1905 | * termination. | |
1906 | * | |
1da177e4 | 1907 | * LOCKING: |
cca3974e | 1908 | * spin_lock_irqsave(host lock) |
2115ea94 TH |
1909 | * |
1910 | * RETURNS: | |
1911 | * 0 on success, SCSI_ML_QUEUE_DEVICE_BUSY if the command | |
1912 | * needs to be deferred. | |
1da177e4 | 1913 | */ |
2115ea94 | 1914 | static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd, |
2115ea94 | 1915 | ata_xlat_func_t xlat_func) |
1da177e4 | 1916 | { |
31cc23b3 | 1917 | struct ata_port *ap = dev->link->ap; |
1da177e4 | 1918 | struct ata_queued_cmd *qc; |
31cc23b3 | 1919 | int rc; |
1da177e4 LT |
1920 | |
1921 | VPRINTK("ENTER\n"); | |
1922 | ||
b27dcfb0 | 1923 | qc = ata_scsi_qc_new(dev, cmd); |
1da177e4 | 1924 | if (!qc) |
ae006510 | 1925 | goto err_mem; |
1da177e4 LT |
1926 | |
1927 | /* data is present; dma-map it */ | |
be7db055 | 1928 | if (cmd->sc_data_direction == DMA_FROM_DEVICE || |
1929 | cmd->sc_data_direction == DMA_TO_DEVICE) { | |
7120165c | 1930 | if (unlikely(scsi_bufflen(cmd) < 1)) { |
a9a79dfe | 1931 | ata_dev_warn(dev, "WARNING: zero len r/w req\n"); |
ae006510 | 1932 | goto err_did; |
1da177e4 LT |
1933 | } |
1934 | ||
7120165c | 1935 | ata_sg_init(qc, scsi_sglist(cmd), scsi_sg_count(cmd)); |
1da177e4 LT |
1936 | |
1937 | qc->dma_dir = cmd->sc_data_direction; | |
1938 | } | |
1939 | ||
1940 | qc->complete_fn = ata_scsi_qc_complete; | |
1941 | ||
ad706991 | 1942 | if (xlat_func(qc)) |
ae006510 | 1943 | goto early_finish; |
1da177e4 | 1944 | |
31cc23b3 TH |
1945 | if (ap->ops->qc_defer) { |
1946 | if ((rc = ap->ops->qc_defer(qc))) | |
1947 | goto defer; | |
1948 | } | |
1949 | ||
1da177e4 | 1950 | /* select device, send command to hardware */ |
8e0e694a | 1951 | ata_qc_issue(qc); |
1da177e4 LT |
1952 | |
1953 | VPRINTK("EXIT\n"); | |
2115ea94 | 1954 | return 0; |
1da177e4 | 1955 | |
ae006510 | 1956 | early_finish: |
2dcb407e | 1957 | ata_qc_free(qc); |
b27dcfb0 | 1958 | cmd->scsi_done(cmd); |
ae006510 | 1959 | DPRINTK("EXIT - early finish (good or error)\n"); |
2115ea94 | 1960 | return 0; |
ae006510 DG |
1961 | |
1962 | err_did: | |
1da177e4 | 1963 | ata_qc_free(qc); |
ae006510 | 1964 | cmd->result = (DID_ERROR << 16); |
b27dcfb0 | 1965 | cmd->scsi_done(cmd); |
253b92ec | 1966 | err_mem: |
ae006510 | 1967 | DPRINTK("EXIT - internal\n"); |
2115ea94 | 1968 | return 0; |
3dc1d881 TH |
1969 | |
1970 | defer: | |
31cc23b3 | 1971 | ata_qc_free(qc); |
3dc1d881 | 1972 | DPRINTK("EXIT - defer\n"); |
31cc23b3 TH |
1973 | if (rc == ATA_DEFER_LINK) |
1974 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
1975 | else | |
1976 | return SCSI_MLQUEUE_HOST_BUSY; | |
1da177e4 LT |
1977 | } |
1978 | ||
1979 | /** | |
1980 | * ata_scsi_rbuf_get - Map response buffer. | |
ec2a20e6 | 1981 | * @cmd: SCSI command containing buffer to be mapped. |
87340e98 TH |
1982 | * @flags: unsigned long variable to store irq enable status |
1983 | * @copy_in: copy in from user buffer | |
1da177e4 | 1984 | * |
87340e98 | 1985 | * Prepare buffer for simulated SCSI commands. |
1da177e4 LT |
1986 | * |
1987 | * LOCKING: | |
87340e98 | 1988 | * spin_lock_irqsave(ata_scsi_rbuf_lock) on success |
1da177e4 LT |
1989 | * |
1990 | * RETURNS: | |
87340e98 | 1991 | * Pointer to response buffer. |
1da177e4 | 1992 | */ |
87340e98 TH |
1993 | static void *ata_scsi_rbuf_get(struct scsi_cmnd *cmd, bool copy_in, |
1994 | unsigned long *flags) | |
1da177e4 | 1995 | { |
87340e98 | 1996 | spin_lock_irqsave(&ata_scsi_rbuf_lock, *flags); |
1da177e4 | 1997 | |
87340e98 TH |
1998 | memset(ata_scsi_rbuf, 0, ATA_SCSI_RBUF_SIZE); |
1999 | if (copy_in) | |
2000 | sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), | |
2001 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); | |
2002 | return ata_scsi_rbuf; | |
1da177e4 LT |
2003 | } |
2004 | ||
2005 | /** | |
2006 | * ata_scsi_rbuf_put - Unmap response buffer. | |
2007 | * @cmd: SCSI command containing buffer to be unmapped. | |
87340e98 TH |
2008 | * @copy_out: copy out result |
2009 | * @flags: @flags passed to ata_scsi_rbuf_get() | |
1da177e4 | 2010 | * |
87340e98 TH |
2011 | * Returns rbuf buffer. The result is copied to @cmd's buffer if |
2012 | * @copy_back is true. | |
1da177e4 LT |
2013 | * |
2014 | * LOCKING: | |
87340e98 | 2015 | * Unlocks ata_scsi_rbuf_lock. |
1da177e4 | 2016 | */ |
87340e98 TH |
2017 | static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, bool copy_out, |
2018 | unsigned long *flags) | |
1da177e4 | 2019 | { |
87340e98 TH |
2020 | if (copy_out) |
2021 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), | |
2022 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); | |
2023 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, *flags); | |
1da177e4 LT |
2024 | } |
2025 | ||
2026 | /** | |
2027 | * ata_scsi_rbuf_fill - wrapper for SCSI command simulators | |
2028 | * @args: device IDENTIFY data / SCSI command of interest. | |
2029 | * @actor: Callback hook for desired SCSI command simulator | |
2030 | * | |
2031 | * Takes care of the hard work of simulating a SCSI command... | |
2032 | * Mapping the response buffer, calling the command's handler, | |
2033 | * and handling the handler's return value. This return value | |
2034 | * indicates whether the handler wishes the SCSI command to be | |
ae006510 DG |
2035 | * completed successfully (0), or not (in which case cmd->result |
2036 | * and sense buffer are assumed to be set). | |
1da177e4 LT |
2037 | * |
2038 | * LOCKING: | |
cca3974e | 2039 | * spin_lock_irqsave(host lock) |
1da177e4 | 2040 | */ |
f0761be3 | 2041 | static void ata_scsi_rbuf_fill(struct ata_scsi_args *args, |
87340e98 | 2042 | unsigned int (*actor)(struct ata_scsi_args *args, u8 *rbuf)) |
1da177e4 LT |
2043 | { |
2044 | u8 *rbuf; | |
87340e98 | 2045 | unsigned int rc; |
1da177e4 | 2046 | struct scsi_cmnd *cmd = args->cmd; |
b445c568 JG |
2047 | unsigned long flags; |
2048 | ||
87340e98 TH |
2049 | rbuf = ata_scsi_rbuf_get(cmd, false, &flags); |
2050 | rc = actor(args, rbuf); | |
2051 | ata_scsi_rbuf_put(cmd, rc == 0, &flags); | |
b445c568 | 2052 | |
ae006510 | 2053 | if (rc == 0) |
1da177e4 | 2054 | cmd->result = SAM_STAT_GOOD; |
ae006510 | 2055 | args->done(cmd); |
1da177e4 LT |
2056 | } |
2057 | ||
2058 | /** | |
2059 | * ata_scsiop_inq_std - Simulate INQUIRY command | |
2060 | * @args: device IDENTIFY data / SCSI command of interest. | |
2061 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2062 | * |
2063 | * Returns standard device identification data associated | |
b142eb65 | 2064 | * with non-VPD INQUIRY command output. |
1da177e4 LT |
2065 | * |
2066 | * LOCKING: | |
cca3974e | 2067 | * spin_lock_irqsave(host lock) |
1da177e4 | 2068 | */ |
87340e98 | 2069 | static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2070 | { |
87340e98 | 2071 | const u8 versions[] = { |
f9ca5ab8 | 2072 | 0x00, |
87340e98 TH |
2073 | 0x60, /* SAM-3 (no version claimed) */ |
2074 | ||
2075 | 0x03, | |
2076 | 0x20, /* SBC-2 (no version claimed) */ | |
2077 | ||
2078 | 0x02, | |
2079 | 0x60 /* SPC-3 (no version claimed) */ | |
2080 | }; | |
f9ca5ab8 HR |
2081 | const u8 versions_zbc[] = { |
2082 | 0x00, | |
2083 | 0xA0, /* SAM-5 (no version claimed) */ | |
2084 | ||
856c4663 HR |
2085 | 0x06, |
2086 | 0x00, /* SBC-4 (no version claimed) */ | |
f9ca5ab8 | 2087 | |
856c4663 HR |
2088 | 0x05, |
2089 | 0xC0, /* SPC-5 (no version claimed) */ | |
f9ca5ab8 HR |
2090 | |
2091 | 0x60, | |
856c4663 | 2092 | 0x24, /* ZBC r05 */ |
f9ca5ab8 HR |
2093 | }; |
2094 | ||
1da177e4 LT |
2095 | u8 hdr[] = { |
2096 | TYPE_DISK, | |
2097 | 0, | |
2098 | 0x5, /* claim SPC-3 version compatibility */ | |
2099 | 2, | |
2100 | 95 - 4 | |
2101 | }; | |
2102 | ||
87340e98 TH |
2103 | VPRINTK("ENTER\n"); |
2104 | ||
8a3e33cf ML |
2105 | /* set scsi removable (RMB) bit per ata bit, or if the |
2106 | * AHCI port says it's external (Hotplug-capable, eSATA). | |
2107 | */ | |
2108 | if (ata_id_removable(args->id) || | |
2109 | (args->dev->link->ap->pflags & ATA_PFLAG_EXTERNAL)) | |
1da177e4 LT |
2110 | hdr[1] |= (1 << 7); |
2111 | ||
856c4663 | 2112 | if (args->dev->class == ATA_DEV_ZAC) |
f9ca5ab8 | 2113 | hdr[0] = TYPE_ZBC; |
f9ca5ab8 | 2114 | |
1da177e4 | 2115 | memcpy(rbuf, hdr, sizeof(hdr)); |
87340e98 TH |
2116 | memcpy(&rbuf[8], "ATA ", 8); |
2117 | ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16); | |
c49a6bf5 KB |
2118 | |
2119 | /* From SAT, use last 2 words from fw rev unless they are spaces */ | |
2120 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV + 2, 4); | |
2121 | if (strncmp(&rbuf[32], " ", 4) == 0) | |
2122 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4); | |
1da177e4 | 2123 | |
87340e98 TH |
2124 | if (rbuf[32] == 0 || rbuf[32] == ' ') |
2125 | memcpy(&rbuf[32], "n/a ", 4); | |
1da177e4 | 2126 | |
856c4663 | 2127 | if (ata_id_zoned_cap(args->id) || args->dev->class == ATA_DEV_ZAC) |
f9ca5ab8 HR |
2128 | memcpy(rbuf + 58, versions_zbc, sizeof(versions_zbc)); |
2129 | else | |
2130 | memcpy(rbuf + 58, versions, sizeof(versions)); | |
1da177e4 LT |
2131 | |
2132 | return 0; | |
2133 | } | |
2134 | ||
2135 | /** | |
b142eb65 | 2136 | * ata_scsiop_inq_00 - Simulate INQUIRY VPD page 0, list of pages |
1da177e4 LT |
2137 | * @args: device IDENTIFY data / SCSI command of interest. |
2138 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 2139 | * |
b142eb65 | 2140 | * Returns list of inquiry VPD pages available. |
1da177e4 LT |
2141 | * |
2142 | * LOCKING: | |
cca3974e | 2143 | * spin_lock_irqsave(host lock) |
1da177e4 | 2144 | */ |
87340e98 | 2145 | static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2146 | { |
6d1003ae | 2147 | int num_pages; |
1da177e4 LT |
2148 | const u8 pages[] = { |
2149 | 0x00, /* page 0x00, this page */ | |
2150 | 0x80, /* page 0x80, unit serial no page */ | |
1e9dbc92 MW |
2151 | 0x83, /* page 0x83, device ident page */ |
2152 | 0x89, /* page 0x89, ata info page */ | |
18f0f978 | 2153 | 0xb0, /* page 0xb0, block limits page */ |
1e9dbc92 | 2154 | 0xb1, /* page 0xb1, block device characteristics page */ |
02e0a604 | 2155 | 0xb2, /* page 0xb2, thin provisioning page */ |
6d1003ae | 2156 | 0xb6, /* page 0xb6, zoned block device characteristics */ |
1da177e4 | 2157 | }; |
1da177e4 | 2158 | |
6d1003ae HR |
2159 | num_pages = sizeof(pages); |
2160 | if (!(args->dev->flags & ATA_DFLAG_ZAC)) | |
2161 | num_pages--; | |
2162 | rbuf[3] = num_pages; /* number of supported VPD pages */ | |
2163 | memcpy(rbuf + 4, pages, num_pages); | |
1da177e4 LT |
2164 | return 0; |
2165 | } | |
2166 | ||
2167 | /** | |
b142eb65 | 2168 | * ata_scsiop_inq_80 - Simulate INQUIRY VPD page 80, device serial number |
1da177e4 LT |
2169 | * @args: device IDENTIFY data / SCSI command of interest. |
2170 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2171 | * |
2172 | * Returns ATA device serial number. | |
2173 | * | |
2174 | * LOCKING: | |
cca3974e | 2175 | * spin_lock_irqsave(host lock) |
1da177e4 | 2176 | */ |
87340e98 | 2177 | static unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 LT |
2178 | { |
2179 | const u8 hdr[] = { | |
2180 | 0, | |
2181 | 0x80, /* this page code */ | |
2182 | 0, | |
a0cf733b | 2183 | ATA_ID_SERNO_LEN, /* page len */ |
1da177e4 | 2184 | }; |
1da177e4 | 2185 | |
87340e98 TH |
2186 | memcpy(rbuf, hdr, sizeof(hdr)); |
2187 | ata_id_string(args->id, (unsigned char *) &rbuf[4], | |
2188 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
1da177e4 LT |
2189 | return 0; |
2190 | } | |
2191 | ||
1da177e4 | 2192 | /** |
b142eb65 | 2193 | * ata_scsiop_inq_83 - Simulate INQUIRY VPD page 83, device identity |
1da177e4 LT |
2194 | * @args: device IDENTIFY data / SCSI command of interest. |
2195 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 2196 | * |
b142eb65 JG |
2197 | * Yields two logical unit device identification designators: |
2198 | * - vendor specific ASCII containing the ATA serial number | |
2199 | * - SAT defined "t10 vendor id based" containing ASCII vendor | |
2200 | * name ("ATA "), model and serial numbers. | |
1da177e4 LT |
2201 | * |
2202 | * LOCKING: | |
cca3974e | 2203 | * spin_lock_irqsave(host lock) |
1da177e4 | 2204 | */ |
87340e98 | 2205 | static unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2206 | { |
b142eb65 | 2207 | const int sat_model_serial_desc_len = 68; |
87340e98 | 2208 | int num; |
1da177e4 | 2209 | |
b142eb65 JG |
2210 | rbuf[1] = 0x83; /* this page code */ |
2211 | num = 4; | |
2212 | ||
87340e98 TH |
2213 | /* piv=0, assoc=lu, code_set=ACSII, designator=vendor */ |
2214 | rbuf[num + 0] = 2; | |
2215 | rbuf[num + 3] = ATA_ID_SERNO_LEN; | |
2216 | num += 4; | |
2217 | ata_id_string(args->id, (unsigned char *) rbuf + num, | |
2218 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
2219 | num += ATA_ID_SERNO_LEN; | |
2220 | ||
2221 | /* SAT defined lu model and serial numbers descriptor */ | |
2222 | /* piv=0, assoc=lu, code_set=ACSII, designator=t10 vendor id */ | |
2223 | rbuf[num + 0] = 2; | |
2224 | rbuf[num + 1] = 1; | |
2225 | rbuf[num + 3] = sat_model_serial_desc_len; | |
2226 | num += 4; | |
2227 | memcpy(rbuf + num, "ATA ", 8); | |
2228 | num += 8; | |
2229 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_PROD, | |
2230 | ATA_ID_PROD_LEN); | |
2231 | num += ATA_ID_PROD_LEN; | |
2232 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_SERNO, | |
2233 | ATA_ID_SERNO_LEN); | |
2234 | num += ATA_ID_SERNO_LEN; | |
2235 | ||
6b3b9d73 HR |
2236 | if (ata_id_has_wwn(args->id)) { |
2237 | /* SAT defined lu world wide name */ | |
2238 | /* piv=0, assoc=lu, code_set=binary, designator=NAA */ | |
2239 | rbuf[num + 0] = 1; | |
2240 | rbuf[num + 1] = 3; | |
2241 | rbuf[num + 3] = ATA_ID_WWN_LEN; | |
2242 | num += 4; | |
2243 | ata_id_string(args->id, (unsigned char *) rbuf + num, | |
2244 | ATA_ID_WWN, ATA_ID_WWN_LEN); | |
2245 | num += ATA_ID_WWN_LEN; | |
2246 | } | |
b142eb65 | 2247 | rbuf[3] = num - 4; /* page len (assume less than 256 bytes) */ |
1da177e4 LT |
2248 | return 0; |
2249 | } | |
2250 | ||
ad355b46 JG |
2251 | /** |
2252 | * ata_scsiop_inq_89 - Simulate INQUIRY VPD page 89, ATA info | |
2253 | * @args: device IDENTIFY data / SCSI command of interest. | |
2254 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
ad355b46 JG |
2255 | * |
2256 | * Yields SAT-specified ATA VPD page. | |
2257 | * | |
2258 | * LOCKING: | |
2259 | * spin_lock_irqsave(host lock) | |
2260 | */ | |
87340e98 | 2261 | static unsigned int ata_scsiop_inq_89(struct ata_scsi_args *args, u8 *rbuf) |
ad355b46 | 2262 | { |
ad355b46 | 2263 | struct ata_taskfile tf; |
ad355b46 | 2264 | |
ad355b46 JG |
2265 | memset(&tf, 0, sizeof(tf)); |
2266 | ||
87340e98 TH |
2267 | rbuf[1] = 0x89; /* our page code */ |
2268 | rbuf[2] = (0x238 >> 8); /* page size fixed at 238h */ | |
2269 | rbuf[3] = (0x238 & 0xff); | |
ad355b46 | 2270 | |
87340e98 TH |
2271 | memcpy(&rbuf[8], "linux ", 8); |
2272 | memcpy(&rbuf[16], "libata ", 16); | |
2273 | memcpy(&rbuf[32], DRV_VERSION, 4); | |
ad355b46 JG |
2274 | |
2275 | /* we don't store the ATA device signature, so we fake it */ | |
2276 | ||
2277 | tf.command = ATA_DRDY; /* really, this is Status reg */ | |
2278 | tf.lbal = 0x1; | |
2279 | tf.nsect = 0x1; | |
2280 | ||
87340e98 TH |
2281 | ata_tf_to_fis(&tf, 0, 1, &rbuf[36]); /* TODO: PMP? */ |
2282 | rbuf[36] = 0x34; /* force D2H Reg FIS (34h) */ | |
ad355b46 | 2283 | |
87340e98 | 2284 | rbuf[56] = ATA_CMD_ID_ATA; |
ad355b46 | 2285 | |
87340e98 | 2286 | memcpy(&rbuf[60], &args->id[0], 512); |
ad355b46 JG |
2287 | return 0; |
2288 | } | |
2289 | ||
18f0f978 CH |
2290 | static unsigned int ata_scsiop_inq_b0(struct ata_scsi_args *args, u8 *rbuf) |
2291 | { | |
295124dc | 2292 | u16 min_io_sectors; |
18f0f978 CH |
2293 | |
2294 | rbuf[1] = 0xb0; | |
2295 | rbuf[3] = 0x3c; /* required VPD size with unmap support */ | |
2296 | ||
2297 | /* | |
2298 | * Optimal transfer length granularity. | |
2299 | * | |
2300 | * This is always one physical block, but for disks with a smaller | |
2301 | * logical than physical sector size we need to figure out what the | |
2302 | * latter is. | |
2303 | */ | |
295124dc | 2304 | min_io_sectors = 1 << ata_id_log2_per_physical_sector(args->id); |
18f0f978 CH |
2305 | put_unaligned_be16(min_io_sectors, &rbuf[6]); |
2306 | ||
2307 | /* | |
2308 | * Optimal unmap granularity. | |
2309 | * | |
2310 | * The ATA spec doesn't even know about a granularity or alignment | |
2311 | * for the TRIM command. We can leave away most of the unmap related | |
2312 | * VPD page entries, but we have specifify a granularity to signal | |
2313 | * that we support some form of unmap - in thise case via WRITE SAME | |
2314 | * with the unmap bit set. | |
2315 | */ | |
e78db4df | 2316 | if (ata_id_has_trim(args->id)) { |
5f4e2066 | 2317 | put_unaligned_be64(65535 * 512 / 8, &rbuf[36]); |
18f0f978 | 2318 | put_unaligned_be32(1, &rbuf[28]); |
e78db4df | 2319 | } |
18f0f978 CH |
2320 | |
2321 | return 0; | |
2322 | } | |
2323 | ||
1e9dbc92 MW |
2324 | static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf) |
2325 | { | |
4bca3286 MP |
2326 | int form_factor = ata_id_form_factor(args->id); |
2327 | int media_rotation_rate = ata_id_rotation_rate(args->id); | |
856c4663 | 2328 | u8 zoned = ata_id_zoned_cap(args->id); |
4bca3286 | 2329 | |
1e9dbc92 MW |
2330 | rbuf[1] = 0xb1; |
2331 | rbuf[3] = 0x3c; | |
4bca3286 MP |
2332 | rbuf[4] = media_rotation_rate >> 8; |
2333 | rbuf[5] = media_rotation_rate; | |
2334 | rbuf[7] = form_factor; | |
856c4663 HR |
2335 | if (zoned) |
2336 | rbuf[8] = (zoned << 4); | |
1e9dbc92 MW |
2337 | |
2338 | return 0; | |
2339 | } | |
2340 | ||
02e0a604 MP |
2341 | static unsigned int ata_scsiop_inq_b2(struct ata_scsi_args *args, u8 *rbuf) |
2342 | { | |
2343 | /* SCSI Thin Provisioning VPD page: SBC-3 rev 22 or later */ | |
2344 | rbuf[1] = 0xb2; | |
2345 | rbuf[3] = 0x4; | |
2346 | rbuf[5] = 1 << 6; /* TPWS */ | |
2347 | ||
2348 | return 0; | |
2349 | } | |
2350 | ||
6d1003ae HR |
2351 | static unsigned int ata_scsiop_inq_b6(struct ata_scsi_args *args, u8 *rbuf) |
2352 | { | |
2353 | /* | |
2354 | * zbc-r05 SCSI Zoned Block device characteristics VPD page | |
2355 | */ | |
2356 | rbuf[1] = 0xb6; | |
2357 | rbuf[3] = 0x3C; | |
2358 | ||
2359 | /* | |
2360 | * URSWRZ bit is only meaningful for host-managed ZAC drives | |
2361 | */ | |
2362 | if (args->dev->zac_zoned_cap & 1) | |
2363 | rbuf[4] |= 1; | |
2364 | put_unaligned_be32(args->dev->zac_zones_optimal_open, &rbuf[8]); | |
2365 | put_unaligned_be32(args->dev->zac_zones_optimal_nonseq, &rbuf[12]); | |
2366 | put_unaligned_be32(args->dev->zac_zones_max_open, &rbuf[16]); | |
2367 | ||
2368 | return 0; | |
2369 | } | |
2370 | ||
1da177e4 | 2371 | /** |
0cba632b | 2372 | * ata_scsiop_noop - Command handler that simply returns success. |
1da177e4 LT |
2373 | * @args: device IDENTIFY data / SCSI command of interest. |
2374 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2375 | * |
2376 | * No operation. Simply returns success to caller, to indicate | |
2377 | * that the caller should successfully complete this SCSI command. | |
2378 | * | |
2379 | * LOCKING: | |
cca3974e | 2380 | * spin_lock_irqsave(host lock) |
1da177e4 | 2381 | */ |
87340e98 | 2382 | static unsigned int ata_scsiop_noop(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 LT |
2383 | { |
2384 | VPRINTK("ENTER\n"); | |
2385 | return 0; | |
2386 | } | |
2387 | ||
6ca8e794 PB |
2388 | /** |
2389 | * modecpy - Prepare response for MODE SENSE | |
2390 | * @dest: output buffer | |
2391 | * @src: data being copied | |
2392 | * @n: length of mode page | |
2393 | * @changeable: whether changeable parameters are requested | |
2394 | * | |
2395 | * Generate a generic MODE SENSE page for either current or changeable | |
2396 | * parameters. | |
2397 | * | |
2398 | * LOCKING: | |
2399 | * None. | |
2400 | */ | |
2401 | static void modecpy(u8 *dest, const u8 *src, int n, bool changeable) | |
2402 | { | |
2403 | if (changeable) { | |
2404 | memcpy(dest, src, 2); | |
2405 | memset(dest + 2, 0, n - 2); | |
2406 | } else { | |
2407 | memcpy(dest, src, n); | |
2408 | } | |
2409 | } | |
2410 | ||
1da177e4 LT |
2411 | /** |
2412 | * ata_msense_caching - Simulate MODE SENSE caching info page | |
2413 | * @id: device IDENTIFY data | |
87340e98 | 2414 | * @buf: output buffer |
6ca8e794 | 2415 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2416 | * |
2417 | * Generate a caching info page, which conditionally indicates | |
2418 | * write caching to the SCSI layer, depending on device | |
2419 | * capabilities. | |
2420 | * | |
2421 | * LOCKING: | |
2422 | * None. | |
2423 | */ | |
6ca8e794 | 2424 | static unsigned int ata_msense_caching(u16 *id, u8 *buf, bool changeable) |
1da177e4 | 2425 | { |
6ca8e794 | 2426 | modecpy(buf, def_cache_mpage, sizeof(def_cache_mpage), changeable); |
1b26d29c | 2427 | if (changeable || ata_id_wcache_enabled(id)) |
87340e98 | 2428 | buf[2] |= (1 << 2); /* write cache enable */ |
6ca8e794 | 2429 | if (!changeable && !ata_id_rahead_enabled(id)) |
87340e98 TH |
2430 | buf[12] |= (1 << 5); /* disable read ahead */ |
2431 | return sizeof(def_cache_mpage); | |
1da177e4 LT |
2432 | } |
2433 | ||
2434 | /** | |
2435 | * ata_msense_ctl_mode - Simulate MODE SENSE control mode page | |
06dbde5f | 2436 | * @dev: ATA device of interest |
87340e98 | 2437 | * @buf: output buffer |
6ca8e794 | 2438 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2439 | * |
2440 | * Generate a generic MODE SENSE control mode page. | |
2441 | * | |
2442 | * LOCKING: | |
2443 | * None. | |
2444 | */ | |
06dbde5f HR |
2445 | static unsigned int ata_msense_ctl_mode(struct ata_device *dev, u8 *buf, |
2446 | bool changeable) | |
1da177e4 | 2447 | { |
6ca8e794 | 2448 | modecpy(buf, def_control_mpage, sizeof(def_control_mpage), changeable); |
06dbde5f HR |
2449 | if (changeable && (dev->flags & ATA_DFLAG_D_SENSE)) |
2450 | buf[2] |= (1 << 2); /* Descriptor sense requested */ | |
00ac37f5 | 2451 | return sizeof(def_control_mpage); |
1da177e4 LT |
2452 | } |
2453 | ||
2454 | /** | |
2455 | * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page | |
ec2a20e6 | 2456 | * @buf: output buffer |
6ca8e794 | 2457 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2458 | * |
2459 | * Generate a generic MODE SENSE r/w error recovery page. | |
2460 | * | |
2461 | * LOCKING: | |
2462 | * None. | |
2463 | */ | |
6ca8e794 | 2464 | static unsigned int ata_msense_rw_recovery(u8 *buf, bool changeable) |
1da177e4 | 2465 | { |
6ca8e794 PB |
2466 | modecpy(buf, def_rw_recovery_mpage, sizeof(def_rw_recovery_mpage), |
2467 | changeable); | |
00ac37f5 | 2468 | return sizeof(def_rw_recovery_mpage); |
1da177e4 LT |
2469 | } |
2470 | ||
48bdc8ec JA |
2471 | /* |
2472 | * We can turn this into a real blacklist if it's needed, for now just | |
2473 | * blacklist any Maxtor BANC1G10 revision firmware | |
2474 | */ | |
2475 | static int ata_dev_supports_fua(u16 *id) | |
2476 | { | |
a0cf733b | 2477 | unsigned char model[ATA_ID_PROD_LEN + 1], fw[ATA_ID_FW_REV_LEN + 1]; |
48bdc8ec | 2478 | |
c3c013a2 JG |
2479 | if (!libata_fua) |
2480 | return 0; | |
48bdc8ec JA |
2481 | if (!ata_id_has_fua(id)) |
2482 | return 0; | |
2483 | ||
a0cf733b TH |
2484 | ata_id_c_string(id, model, ATA_ID_PROD, sizeof(model)); |
2485 | ata_id_c_string(id, fw, ATA_ID_FW_REV, sizeof(fw)); | |
48bdc8ec | 2486 | |
2e02671d | 2487 | if (strcmp(model, "Maxtor")) |
48bdc8ec | 2488 | return 1; |
2e02671d | 2489 | if (strcmp(fw, "BANC1G10")) |
48bdc8ec JA |
2490 | return 1; |
2491 | ||
2492 | return 0; /* blacklisted */ | |
2493 | } | |
2494 | ||
1da177e4 LT |
2495 | /** |
2496 | * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands | |
2497 | * @args: device IDENTIFY data / SCSI command of interest. | |
2498 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 2499 | * |
00ac37f5 DG |
2500 | * Simulate MODE SENSE commands. Assume this is invoked for direct |
2501 | * access devices (e.g. disks) only. There should be no block | |
2502 | * descriptor for other device types. | |
1da177e4 LT |
2503 | * |
2504 | * LOCKING: | |
cca3974e | 2505 | * spin_lock_irqsave(host lock) |
1da177e4 | 2506 | */ |
87340e98 | 2507 | static unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2508 | { |
9a3dccc4 | 2509 | struct ata_device *dev = args->dev; |
87340e98 | 2510 | u8 *scsicmd = args->cmd->cmnd, *p = rbuf; |
00ac37f5 DG |
2511 | const u8 sat_blk_desc[] = { |
2512 | 0, 0, 0, 0, /* number of blocks: sat unspecified */ | |
2513 | 0, | |
2514 | 0, 0x2, 0x0 /* block length: 512 bytes */ | |
2515 | }; | |
2516 | u8 pg, spg; | |
87340e98 | 2517 | unsigned int ebd, page_control, six_byte; |
0df10b84 | 2518 | u8 dpofua, bp = 0xff; |
bcfc867d | 2519 | u16 fp; |
1da177e4 LT |
2520 | |
2521 | VPRINTK("ENTER\n"); | |
2522 | ||
2523 | six_byte = (scsicmd[0] == MODE_SENSE); | |
00ac37f5 DG |
2524 | ebd = !(scsicmd[1] & 0x8); /* dbd bit inverted == edb */ |
2525 | /* | |
2526 | * LLBA bit in msense(10) ignored (compliant) | |
1da177e4 | 2527 | */ |
00ac37f5 | 2528 | |
1da177e4 | 2529 | page_control = scsicmd[2] >> 6; |
ae006510 DG |
2530 | switch (page_control) { |
2531 | case 0: /* current */ | |
6ca8e794 PB |
2532 | case 1: /* changeable */ |
2533 | case 2: /* defaults */ | |
ae006510 DG |
2534 | break; /* supported */ |
2535 | case 3: /* saved */ | |
2536 | goto saving_not_supp; | |
ae006510 | 2537 | default: |
bcfc867d | 2538 | fp = 2; |
0df10b84 | 2539 | bp = 6; |
ae006510 DG |
2540 | goto invalid_fld; |
2541 | } | |
1da177e4 | 2542 | |
87340e98 TH |
2543 | if (six_byte) |
2544 | p += 4 + (ebd ? 8 : 0); | |
2545 | else | |
2546 | p += 8 + (ebd ? 8 : 0); | |
1da177e4 | 2547 | |
00ac37f5 DG |
2548 | pg = scsicmd[2] & 0x3f; |
2549 | spg = scsicmd[3]; | |
2550 | /* | |
2551 | * No mode subpages supported (yet) but asking for _all_ | |
2552 | * subpages may be valid | |
2553 | */ | |
bcfc867d HR |
2554 | if (spg && (spg != ALL_SUB_MPAGES)) { |
2555 | fp = 3; | |
00ac37f5 | 2556 | goto invalid_fld; |
bcfc867d | 2557 | } |
00ac37f5 DG |
2558 | |
2559 | switch(pg) { | |
2560 | case RW_RECOVERY_MPAGE: | |
6ca8e794 | 2561 | p += ata_msense_rw_recovery(p, page_control == 1); |
1da177e4 LT |
2562 | break; |
2563 | ||
00ac37f5 | 2564 | case CACHE_MPAGE: |
6ca8e794 | 2565 | p += ata_msense_caching(args->id, p, page_control == 1); |
1da177e4 LT |
2566 | break; |
2567 | ||
87340e98 | 2568 | case CONTROL_MPAGE: |
06dbde5f | 2569 | p += ata_msense_ctl_mode(args->dev, p, page_control == 1); |
1da177e4 | 2570 | break; |
1da177e4 | 2571 | |
00ac37f5 | 2572 | case ALL_MPAGES: |
6ca8e794 PB |
2573 | p += ata_msense_rw_recovery(p, page_control == 1); |
2574 | p += ata_msense_caching(args->id, p, page_control == 1); | |
06dbde5f | 2575 | p += ata_msense_ctl_mode(args->dev, p, page_control == 1); |
1da177e4 LT |
2576 | break; |
2577 | ||
2578 | default: /* invalid page code */ | |
bcfc867d | 2579 | fp = 2; |
ae006510 | 2580 | goto invalid_fld; |
1da177e4 LT |
2581 | } |
2582 | ||
9a3dccc4 | 2583 | dpofua = 0; |
f79d409f | 2584 | if (ata_dev_supports_fua(args->id) && (dev->flags & ATA_DFLAG_LBA48) && |
9a3dccc4 TH |
2585 | (!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count)) |
2586 | dpofua = 1 << 4; | |
2587 | ||
1da177e4 | 2588 | if (six_byte) { |
87340e98 TH |
2589 | rbuf[0] = p - rbuf - 1; |
2590 | rbuf[2] |= dpofua; | |
00ac37f5 | 2591 | if (ebd) { |
87340e98 TH |
2592 | rbuf[3] = sizeof(sat_blk_desc); |
2593 | memcpy(rbuf + 4, sat_blk_desc, sizeof(sat_blk_desc)); | |
00ac37f5 | 2594 | } |
1da177e4 | 2595 | } else { |
87340e98 TH |
2596 | unsigned int output_len = p - rbuf - 2; |
2597 | ||
1da177e4 | 2598 | rbuf[0] = output_len >> 8; |
87340e98 TH |
2599 | rbuf[1] = output_len; |
2600 | rbuf[3] |= dpofua; | |
00ac37f5 | 2601 | if (ebd) { |
87340e98 TH |
2602 | rbuf[7] = sizeof(sat_blk_desc); |
2603 | memcpy(rbuf + 8, sat_blk_desc, sizeof(sat_blk_desc)); | |
00ac37f5 | 2604 | } |
1da177e4 | 2605 | } |
1da177e4 | 2606 | return 0; |
ae006510 DG |
2607 | |
2608 | invalid_fld: | |
0df10b84 | 2609 | ata_scsi_set_invalid_field(dev, args->cmd, fp, bp); |
ae006510 DG |
2610 | return 1; |
2611 | ||
2612 | saving_not_supp: | |
06dbde5f | 2613 | ata_scsi_set_sense(dev, args->cmd, ILLEGAL_REQUEST, 0x39, 0x0); |
ae006510 DG |
2614 | /* "Saving parameters not supported" */ |
2615 | return 1; | |
1da177e4 LT |
2616 | } |
2617 | ||
2618 | /** | |
2619 | * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands | |
2620 | * @args: device IDENTIFY data / SCSI command of interest. | |
2621 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2622 | * |
2623 | * Simulate READ CAPACITY commands. | |
2624 | * | |
2625 | * LOCKING: | |
6a36261e | 2626 | * None. |
1da177e4 | 2627 | */ |
87340e98 | 2628 | static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2629 | { |
61d79a8e MP |
2630 | struct ata_device *dev = args->dev; |
2631 | u64 last_lba = dev->n_sectors - 1; /* LBA of the last block */ | |
295124dc GG |
2632 | u32 sector_size; /* physical sector size in bytes */ |
2633 | u8 log2_per_phys; | |
2634 | u16 lowest_aligned; | |
2635 | ||
2636 | sector_size = ata_id_logical_sector_size(dev->id); | |
2637 | log2_per_phys = ata_id_log2_per_physical_sector(dev->id); | |
2638 | lowest_aligned = ata_id_logical_sector_offset(dev->id, log2_per_phys); | |
1da177e4 LT |
2639 | |
2640 | VPRINTK("ENTER\n"); | |
2641 | ||
1da177e4 | 2642 | if (args->cmd->cmnd[0] == READ_CAPACITY) { |
6a36261e TH |
2643 | if (last_lba >= 0xffffffffULL) |
2644 | last_lba = 0xffffffff; | |
0c144d0d | 2645 | |
1da177e4 | 2646 | /* sector count, 32-bit */ |
87340e98 TH |
2647 | rbuf[0] = last_lba >> (8 * 3); |
2648 | rbuf[1] = last_lba >> (8 * 2); | |
2649 | rbuf[2] = last_lba >> (8 * 1); | |
2650 | rbuf[3] = last_lba; | |
1da177e4 LT |
2651 | |
2652 | /* sector size */ | |
295124dc GG |
2653 | rbuf[4] = sector_size >> (8 * 3); |
2654 | rbuf[5] = sector_size >> (8 * 2); | |
2655 | rbuf[6] = sector_size >> (8 * 1); | |
2656 | rbuf[7] = sector_size; | |
1da177e4 LT |
2657 | } else { |
2658 | /* sector count, 64-bit */ | |
87340e98 TH |
2659 | rbuf[0] = last_lba >> (8 * 7); |
2660 | rbuf[1] = last_lba >> (8 * 6); | |
2661 | rbuf[2] = last_lba >> (8 * 5); | |
2662 | rbuf[3] = last_lba >> (8 * 4); | |
2663 | rbuf[4] = last_lba >> (8 * 3); | |
2664 | rbuf[5] = last_lba >> (8 * 2); | |
2665 | rbuf[6] = last_lba >> (8 * 1); | |
2666 | rbuf[7] = last_lba; | |
1da177e4 LT |
2667 | |
2668 | /* sector size */ | |
295124dc GG |
2669 | rbuf[ 8] = sector_size >> (8 * 3); |
2670 | rbuf[ 9] = sector_size >> (8 * 2); | |
2671 | rbuf[10] = sector_size >> (8 * 1); | |
2672 | rbuf[11] = sector_size; | |
61d79a8e MP |
2673 | |
2674 | rbuf[12] = 0; | |
295124dc | 2675 | rbuf[13] = log2_per_phys; |
61d79a8e MP |
2676 | rbuf[14] = (lowest_aligned >> 8) & 0x3f; |
2677 | rbuf[15] = lowest_aligned; | |
18f0f978 | 2678 | |
71d126fd AF |
2679 | if (ata_id_has_trim(args->id) && |
2680 | !(dev->horkage & ATA_HORKAGE_NOTRIM)) { | |
e61f7d1c | 2681 | rbuf[14] |= 0x80; /* LBPME */ |
e78db4df | 2682 | |
e61f7d1c MP |
2683 | if (ata_id_has_zero_after_trim(args->id) && |
2684 | dev->horkage & ATA_HORKAGE_ZERO_AFTER_TRIM) { | |
2685 | ata_dev_info(dev, "Enabling discard_zeroes_data\n"); | |
2686 | rbuf[14] |= 0x40; /* LBPRZ */ | |
2687 | } | |
e78db4df | 2688 | } |
6d1003ae HR |
2689 | if (ata_id_zoned_cap(args->id) || |
2690 | args->dev->class == ATA_DEV_ZAC) | |
2691 | rbuf[12] = (1 << 4); /* RC_BASIS */ | |
1da177e4 | 2692 | } |
1da177e4 LT |
2693 | return 0; |
2694 | } | |
2695 | ||
2696 | /** | |
2697 | * ata_scsiop_report_luns - Simulate REPORT LUNS command | |
2698 | * @args: device IDENTIFY data / SCSI command of interest. | |
2699 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2700 | * |
2701 | * Simulate REPORT LUNS command. | |
2702 | * | |
2703 | * LOCKING: | |
cca3974e | 2704 | * spin_lock_irqsave(host lock) |
1da177e4 | 2705 | */ |
87340e98 | 2706 | static unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 LT |
2707 | { |
2708 | VPRINTK("ENTER\n"); | |
2709 | rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */ | |
2710 | ||
2711 | return 0; | |
2712 | } | |
2713 | ||
77853bf2 | 2714 | static void atapi_sense_complete(struct ata_queued_cmd *qc) |
a939c963 | 2715 | { |
74e6c8c3 | 2716 | if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) { |
c6e6e666 JG |
2717 | /* FIXME: not quite right; we don't want the |
2718 | * translation of taskfile registers into | |
2719 | * a sense descriptors, since that's only | |
2720 | * correct for ATA, not ATAPI | |
2721 | */ | |
750426aa | 2722 | ata_gen_passthru_sense(qc); |
74e6c8c3 | 2723 | } |
a939c963 | 2724 | |
2aa8f5d6 | 2725 | ata_qc_done(qc); |
c6e6e666 | 2726 | } |
a939c963 | 2727 | |
c6e6e666 JG |
2728 | /* is it pointless to prefer PIO for "safety reasons"? */ |
2729 | static inline int ata_pio_use_silly(struct ata_port *ap) | |
2730 | { | |
2731 | return (ap->flags & ATA_FLAG_PIO_DMA); | |
2732 | } | |
2733 | ||
2734 | static void atapi_request_sense(struct ata_queued_cmd *qc) | |
2735 | { | |
2736 | struct ata_port *ap = qc->ap; | |
2737 | struct scsi_cmnd *cmd = qc->scsicmd; | |
2738 | ||
2739 | DPRINTK("ATAPI request sense\n"); | |
a939c963 | 2740 | |
7ccd720d | 2741 | memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); |
a939c963 | 2742 | |
127102ae | 2743 | #ifdef CONFIG_ATA_SFF |
855d854a JB |
2744 | if (ap->ops->sff_tf_read) |
2745 | ap->ops->sff_tf_read(ap, &qc->tf); | |
127102ae | 2746 | #endif |
c6e6e666 JG |
2747 | |
2748 | /* fill these in, for the case where they are -not- overwritten */ | |
2749 | cmd->sense_buffer[0] = 0x70; | |
2750 | cmd->sense_buffer[2] = qc->tf.feature >> 4; | |
2751 | ||
2752 | ata_qc_reinit(qc); | |
2753 | ||
93f8fecb | 2754 | /* setup sg table and init transfer direction */ |
cadb7345 | 2755 | sg_init_one(&qc->sgent, cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); |
93f8fecb | 2756 | ata_sg_init(qc, &qc->sgent, 1); |
a939c963 JG |
2757 | qc->dma_dir = DMA_FROM_DEVICE; |
2758 | ||
6e7846e9 | 2759 | memset(&qc->cdb, 0, qc->dev->cdb_len); |
a939c963 JG |
2760 | qc->cdb[0] = REQUEST_SENSE; |
2761 | qc->cdb[4] = SCSI_SENSE_BUFFERSIZE; | |
2762 | ||
2763 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
2764 | qc->tf.command = ATA_CMD_PACKET; | |
2765 | ||
c6e6e666 | 2766 | if (ata_pio_use_silly(ap)) { |
0dc36888 | 2767 | qc->tf.protocol = ATAPI_PROT_DMA; |
c6e6e666 JG |
2768 | qc->tf.feature |= ATAPI_PKT_DMA; |
2769 | } else { | |
0dc36888 | 2770 | qc->tf.protocol = ATAPI_PROT_PIO; |
2db78dd3 AC |
2771 | qc->tf.lbam = SCSI_SENSE_BUFFERSIZE; |
2772 | qc->tf.lbah = 0; | |
c6e6e666 | 2773 | } |
a939c963 JG |
2774 | qc->nbytes = SCSI_SENSE_BUFFERSIZE; |
2775 | ||
c6e6e666 | 2776 | qc->complete_fn = atapi_sense_complete; |
a939c963 | 2777 | |
8e0e694a | 2778 | ata_qc_issue(qc); |
a939c963 JG |
2779 | |
2780 | DPRINTK("EXIT\n"); | |
2781 | } | |
2782 | ||
77853bf2 | 2783 | static void atapi_qc_complete(struct ata_queued_cmd *qc) |
1da177e4 LT |
2784 | { |
2785 | struct scsi_cmnd *cmd = qc->scsicmd; | |
a22e2eb0 | 2786 | unsigned int err_mask = qc->err_mask; |
1da177e4 | 2787 | |
a7dac447 | 2788 | VPRINTK("ENTER, err_mask 0x%X\n", err_mask); |
e12669e7 | 2789 | |
246619da TH |
2790 | /* handle completion from new EH */ |
2791 | if (unlikely(qc->ap->ops->error_handler && | |
2792 | (err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID))) { | |
2793 | ||
2794 | if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) { | |
2795 | /* FIXME: not quite right; we don't want the | |
2796 | * translation of taskfile registers into a | |
2797 | * sense descriptors, since that's only | |
2798 | * correct for ATA, not ATAPI | |
2799 | */ | |
750426aa | 2800 | ata_gen_passthru_sense(qc); |
246619da TH |
2801 | } |
2802 | ||
22aac089 TH |
2803 | /* SCSI EH automatically locks door if sdev->locked is |
2804 | * set. Sometimes door lock request continues to | |
2805 | * fail, for example, when no media is present. This | |
2806 | * creates a loop - SCSI EH issues door lock which | |
2807 | * fails and gets invoked again to acquire sense data | |
2808 | * for the failed command. | |
2809 | * | |
2810 | * If door lock fails, always clear sdev->locked to | |
2811 | * avoid this infinite loop. | |
2a5f07b5 TH |
2812 | * |
2813 | * This may happen before SCSI scan is complete. Make | |
2814 | * sure qc->dev->sdev isn't NULL before dereferencing. | |
22aac089 | 2815 | */ |
2a5f07b5 | 2816 | if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL && qc->dev->sdev) |
22aac089 TH |
2817 | qc->dev->sdev->locked = 0; |
2818 | ||
246619da | 2819 | qc->scsicmd->result = SAM_STAT_CHECK_CONDITION; |
2aa8f5d6 | 2820 | ata_qc_done(qc); |
246619da TH |
2821 | return; |
2822 | } | |
2823 | ||
2824 | /* successful completion or old EH failure path */ | |
a7dac447 | 2825 | if (unlikely(err_mask & AC_ERR_DEV)) { |
1da177e4 | 2826 | cmd->result = SAM_STAT_CHECK_CONDITION; |
c6e6e666 | 2827 | atapi_request_sense(qc); |
77853bf2 | 2828 | return; |
74e6c8c3 | 2829 | } else if (unlikely(err_mask)) { |
a7dac447 JG |
2830 | /* FIXME: not quite right; we don't want the |
2831 | * translation of taskfile registers into | |
2832 | * a sense descriptors, since that's only | |
2833 | * correct for ATA, not ATAPI | |
2834 | */ | |
750426aa | 2835 | ata_gen_passthru_sense(qc); |
74e6c8c3 | 2836 | } else { |
1da177e4 LT |
2837 | u8 *scsicmd = cmd->cmnd; |
2838 | ||
fd71da46 | 2839 | if ((scsicmd[0] == INQUIRY) && ((scsicmd[1] & 0x03) == 0)) { |
b445c568 | 2840 | unsigned long flags; |
87340e98 | 2841 | u8 *buf; |
b445c568 | 2842 | |
87340e98 | 2843 | buf = ata_scsi_rbuf_get(cmd, true, &flags); |
a15dbeb4 JG |
2844 | |
2845 | /* ATAPI devices typically report zero for their SCSI version, | |
2846 | * and sometimes deviate from the spec WRT response data | |
2847 | * format. If SCSI version is reported as zero like normal, | |
2848 | * then we make the following fixups: 1) Fake MMC-5 version, | |
2849 | * to indicate to the Linux scsi midlayer this is a modern | |
2850 | * device. 2) Ensure response data format / ATAPI information | |
2851 | * are always correct. | |
a15dbeb4 JG |
2852 | */ |
2853 | if (buf[2] == 0) { | |
2854 | buf[2] = 0x5; | |
2855 | buf[3] = 0x32; | |
2856 | } | |
2857 | ||
87340e98 | 2858 | ata_scsi_rbuf_put(cmd, true, &flags); |
1da177e4 | 2859 | } |
a15dbeb4 | 2860 | |
1da177e4 LT |
2861 | cmd->result = SAM_STAT_GOOD; |
2862 | } | |
2863 | ||
2aa8f5d6 | 2864 | ata_qc_done(qc); |
1da177e4 LT |
2865 | } |
2866 | /** | |
2867 | * atapi_xlat - Initialize PACKET taskfile | |
2868 | * @qc: command structure to be initialized | |
1da177e4 LT |
2869 | * |
2870 | * LOCKING: | |
cca3974e | 2871 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
2872 | * |
2873 | * RETURNS: | |
2874 | * Zero on success, non-zero on failure. | |
2875 | */ | |
ad706991 | 2876 | static unsigned int atapi_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 2877 | { |
542b1444 | 2878 | struct scsi_cmnd *scmd = qc->scsicmd; |
1da177e4 | 2879 | struct ata_device *dev = qc->dev; |
542b1444 | 2880 | int nodata = (scmd->sc_data_direction == DMA_NONE); |
5895ef9a | 2881 | int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO); |
2db78dd3 | 2882 | unsigned int nbytes; |
1da177e4 | 2883 | |
2e5704f6 TH |
2884 | memset(qc->cdb, 0, dev->cdb_len); |
2885 | memcpy(qc->cdb, scmd->cmnd, scmd->cmd_len); | |
1da177e4 LT |
2886 | |
2887 | qc->complete_fn = atapi_qc_complete; | |
2888 | ||
2889 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
542b1444 | 2890 | if (scmd->sc_data_direction == DMA_TO_DEVICE) { |
1da177e4 LT |
2891 | qc->tf.flags |= ATA_TFLAG_WRITE; |
2892 | DPRINTK("direction: write\n"); | |
2893 | } | |
2894 | ||
2895 | qc->tf.command = ATA_CMD_PACKET; | |
aacda375 | 2896 | ata_qc_set_pc_nbytes(qc); |
e00f1ff3 TH |
2897 | |
2898 | /* check whether ATAPI DMA is safe */ | |
5895ef9a | 2899 | if (!nodata && !using_pio && atapi_check_dma(qc)) |
e00f1ff3 | 2900 | using_pio = 1; |
1da177e4 | 2901 | |
e190222d TH |
2902 | /* Some controller variants snoop this value for Packet |
2903 | * transfers to do state machine and FIFO management. Thus we | |
2904 | * want to set it properly, and for DMA where it is | |
2905 | * effectively meaningless. | |
2906 | */ | |
aacda375 | 2907 | nbytes = min(ata_qc_raw_nbytes(qc), (unsigned int)63 * 1024); |
2db78dd3 | 2908 | |
e190222d TH |
2909 | /* Most ATAPI devices which honor transfer chunk size don't |
2910 | * behave according to the spec when odd chunk size which | |
2911 | * matches the transfer length is specified. If the number of | |
2912 | * bytes to transfer is 2n+1. According to the spec, what | |
2913 | * should happen is to indicate that 2n+1 is going to be | |
2914 | * transferred and transfer 2n+2 bytes where the last byte is | |
2915 | * padding. | |
2916 | * | |
2917 | * In practice, this doesn't happen. ATAPI devices first | |
2918 | * indicate and transfer 2n bytes and then indicate and | |
2919 | * transfer 2 bytes where the last byte is padding. | |
2920 | * | |
2921 | * This inconsistency confuses several controllers which | |
2922 | * perform PIO using DMA such as Intel AHCIs and sil3124/32. | |
2923 | * These controllers use actual number of transferred bytes to | |
2924 | * update DMA poitner and transfer of 4n+2 bytes make those | |
2925 | * controller push DMA pointer by 4n+4 bytes because SATA data | |
2926 | * FISes are aligned to 4 bytes. This causes data corruption | |
2927 | * and buffer overrun. | |
2928 | * | |
2929 | * Always setting nbytes to even number solves this problem | |
2930 | * because then ATAPI devices don't have to split data at 2n | |
2931 | * boundaries. | |
2932 | */ | |
2933 | if (nbytes & 0x1) | |
2934 | nbytes++; | |
2935 | ||
2db78dd3 AC |
2936 | qc->tf.lbam = (nbytes & 0xFF); |
2937 | qc->tf.lbah = (nbytes >> 8); | |
2938 | ||
5895ef9a TH |
2939 | if (nodata) |
2940 | qc->tf.protocol = ATAPI_PROT_NODATA; | |
2941 | else if (using_pio) | |
2942 | qc->tf.protocol = ATAPI_PROT_PIO; | |
2943 | else { | |
e00f1ff3 | 2944 | /* DMA data xfer */ |
0dc36888 | 2945 | qc->tf.protocol = ATAPI_PROT_DMA; |
1da177e4 LT |
2946 | qc->tf.feature |= ATAPI_PKT_DMA; |
2947 | ||
91163006 TH |
2948 | if ((dev->flags & ATA_DFLAG_DMADIR) && |
2949 | (scmd->sc_data_direction != DMA_TO_DEVICE)) | |
95de719a | 2950 | /* some SATA bridges need us to indicate data xfer direction */ |
1da177e4 | 2951 | qc->tf.feature |= ATAPI_DMADIR; |
1da177e4 LT |
2952 | } |
2953 | ||
2db78dd3 AC |
2954 | |
2955 | /* FIXME: We need to translate 0x05 READ_BLOCK_LIMITS to a MODE_SENSE | |
2956 | as ATAPI tape drives don't get this right otherwise */ | |
1da177e4 LT |
2957 | return 0; |
2958 | } | |
2959 | ||
2dcb407e | 2960 | static struct ata_device *ata_find_dev(struct ata_port *ap, int devno) |
ab5b3a5b | 2961 | { |
071f44b1 | 2962 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
2963 | if (likely(devno < ata_link_max_devices(&ap->link))) |
2964 | return &ap->link.device[devno]; | |
2965 | } else { | |
2966 | if (likely(devno < ap->nr_pmp_links)) | |
2967 | return &ap->pmp_link[devno].device[0]; | |
2968 | } | |
2969 | ||
ab5b3a5b TH |
2970 | return NULL; |
2971 | } | |
2972 | ||
2dcb407e JG |
2973 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
2974 | const struct scsi_device *scsidev) | |
ab5b3a5b | 2975 | { |
41bda9c9 TH |
2976 | int devno; |
2977 | ||
ab5b3a5b | 2978 | /* skip commands not addressed to targets we simulate */ |
071f44b1 | 2979 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
2980 | if (unlikely(scsidev->channel || scsidev->lun)) |
2981 | return NULL; | |
2982 | devno = scsidev->id; | |
2983 | } else { | |
2984 | if (unlikely(scsidev->id || scsidev->lun)) | |
2985 | return NULL; | |
2986 | devno = scsidev->channel; | |
2987 | } | |
ab5b3a5b | 2988 | |
41bda9c9 | 2989 | return ata_find_dev(ap, devno); |
ab5b3a5b TH |
2990 | } |
2991 | ||
1da177e4 LT |
2992 | /** |
2993 | * ata_scsi_find_dev - lookup ata_device from scsi_cmnd | |
2994 | * @ap: ATA port to which the device is attached | |
2995 | * @scsidev: SCSI device from which we derive the ATA device | |
2996 | * | |
2997 | * Given various information provided in struct scsi_cmnd, | |
2998 | * map that onto an ATA bus, and using that mapping | |
2999 | * determine which ata_device is associated with the | |
3000 | * SCSI command to be sent. | |
3001 | * | |
3002 | * LOCKING: | |
cca3974e | 3003 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
3004 | * |
3005 | * RETURNS: | |
3006 | * Associated ATA device, or %NULL if not found. | |
3007 | */ | |
1da177e4 | 3008 | static struct ata_device * |
057ace5e | 3009 | ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev) |
1da177e4 | 3010 | { |
ab5b3a5b | 3011 | struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev); |
1da177e4 | 3012 | |
2486fa56 | 3013 | if (unlikely(!dev || !ata_dev_enabled(dev))) |
1da177e4 LT |
3014 | return NULL; |
3015 | ||
1da177e4 LT |
3016 | return dev; |
3017 | } | |
3018 | ||
b095518e JG |
3019 | /* |
3020 | * ata_scsi_map_proto - Map pass-thru protocol value to taskfile value. | |
3021 | * @byte1: Byte 1 from pass-thru CDB. | |
3022 | * | |
3023 | * RETURNS: | |
3024 | * ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise. | |
3025 | */ | |
3026 | static u8 | |
3027 | ata_scsi_map_proto(u8 byte1) | |
3028 | { | |
3029 | switch((byte1 & 0x1e) >> 1) { | |
2dcb407e JG |
3030 | case 3: /* Non-data */ |
3031 | return ATA_PROT_NODATA; | |
3032 | ||
3033 | case 6: /* DMA */ | |
3034 | case 10: /* UDMA Data-in */ | |
3035 | case 11: /* UDMA Data-Out */ | |
3036 | return ATA_PROT_DMA; | |
3037 | ||
3038 | case 4: /* PIO Data-in */ | |
3039 | case 5: /* PIO Data-out */ | |
3040 | return ATA_PROT_PIO; | |
3041 | ||
ee7fb331 VK |
3042 | case 12: /* FPDMA */ |
3043 | return ATA_PROT_NCQ; | |
3044 | ||
2dcb407e JG |
3045 | case 0: /* Hard Reset */ |
3046 | case 1: /* SRST */ | |
3047 | case 8: /* Device Diagnostic */ | |
3048 | case 9: /* Device Reset */ | |
3049 | case 7: /* DMA Queued */ | |
2dcb407e JG |
3050 | case 15: /* Return Response Info */ |
3051 | default: /* Reserved */ | |
3052 | break; | |
b095518e JG |
3053 | } |
3054 | ||
3055 | return ATA_PROT_UNKNOWN; | |
3056 | } | |
3057 | ||
3058 | /** | |
3059 | * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile | |
3060 | * @qc: command structure to be initialized | |
b095518e JG |
3061 | * |
3062 | * Handles either 12 or 16-byte versions of the CDB. | |
3063 | * | |
3064 | * RETURNS: | |
3065 | * Zero on success, non-zero on failure. | |
3066 | */ | |
ad706991 | 3067 | static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc) |
b095518e JG |
3068 | { |
3069 | struct ata_taskfile *tf = &(qc->tf); | |
542b1444 | 3070 | struct scsi_cmnd *scmd = qc->scsicmd; |
f79d409f | 3071 | struct ata_device *dev = qc->dev; |
ad706991 | 3072 | const u8 *cdb = scmd->cmnd; |
bcfc867d | 3073 | u16 fp; |
b095518e | 3074 | |
bcfc867d HR |
3075 | if ((tf->protocol = ata_scsi_map_proto(cdb[1])) == ATA_PROT_UNKNOWN) { |
3076 | fp = 1; | |
9a405257 | 3077 | goto invalid_fld; |
bcfc867d | 3078 | } |
8190bdb9 | 3079 | |
5f8e7f17 VK |
3080 | /* enable LBA */ |
3081 | tf->flags |= ATA_TFLAG_LBA; | |
3082 | ||
b095518e JG |
3083 | /* |
3084 | * 12 and 16 byte CDBs use different offsets to | |
3085 | * provide the various register values. | |
3086 | */ | |
542b1444 | 3087 | if (cdb[0] == ATA_16) { |
b095518e JG |
3088 | /* |
3089 | * 16-byte CDB - may contain extended commands. | |
3090 | * | |
3091 | * If that is the case, copy the upper byte register values. | |
3092 | */ | |
542b1444 TH |
3093 | if (cdb[1] & 0x01) { |
3094 | tf->hob_feature = cdb[3]; | |
3095 | tf->hob_nsect = cdb[5]; | |
3096 | tf->hob_lbal = cdb[7]; | |
3097 | tf->hob_lbam = cdb[9]; | |
3098 | tf->hob_lbah = cdb[11]; | |
b095518e JG |
3099 | tf->flags |= ATA_TFLAG_LBA48; |
3100 | } else | |
3101 | tf->flags &= ~ATA_TFLAG_LBA48; | |
3102 | ||
3103 | /* | |
3104 | * Always copy low byte, device and command registers. | |
3105 | */ | |
542b1444 TH |
3106 | tf->feature = cdb[4]; |
3107 | tf->nsect = cdb[6]; | |
3108 | tf->lbal = cdb[8]; | |
3109 | tf->lbam = cdb[10]; | |
3110 | tf->lbah = cdb[12]; | |
3111 | tf->device = cdb[13]; | |
3112 | tf->command = cdb[14]; | |
b095518e JG |
3113 | } else { |
3114 | /* | |
3115 | * 12-byte CDB - incapable of extended commands. | |
3116 | */ | |
3117 | tf->flags &= ~ATA_TFLAG_LBA48; | |
3118 | ||
542b1444 TH |
3119 | tf->feature = cdb[3]; |
3120 | tf->nsect = cdb[4]; | |
3121 | tf->lbal = cdb[5]; | |
3122 | tf->lbam = cdb[6]; | |
3123 | tf->lbah = cdb[7]; | |
3124 | tf->device = cdb[8]; | |
3125 | tf->command = cdb[9]; | |
b095518e | 3126 | } |
fa4453c4 | 3127 | |
ee7fb331 VK |
3128 | /* For NCQ commands with FPDMA protocol, copy the tag value */ |
3129 | if (tf->protocol == ATA_PROT_NCQ) | |
3130 | tf->nsect = qc->tag << 3; | |
3131 | ||
fa4453c4 AL |
3132 | /* enforce correct master/slave bit */ |
3133 | tf->device = dev->devno ? | |
3134 | tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1; | |
b095518e | 3135 | |
bd30add8 | 3136 | switch (tf->command) { |
295124dc | 3137 | /* READ/WRITE LONG use a non-standard sect_size */ |
bd30add8 TH |
3138 | case ATA_CMD_READ_LONG: |
3139 | case ATA_CMD_READ_LONG_ONCE: | |
3140 | case ATA_CMD_WRITE_LONG: | |
3141 | case ATA_CMD_WRITE_LONG_ONCE: | |
bcfc867d HR |
3142 | if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1) { |
3143 | fp = 1; | |
bd30add8 | 3144 | goto invalid_fld; |
bcfc867d | 3145 | } |
bd30add8 | 3146 | qc->sect_size = scsi_bufflen(scmd); |
295124dc GG |
3147 | break; |
3148 | ||
3149 | /* commands using reported Logical Block size (e.g. 512 or 4K) */ | |
3150 | case ATA_CMD_CFA_WRITE_NE: | |
3151 | case ATA_CMD_CFA_TRANS_SECT: | |
3152 | case ATA_CMD_CFA_WRITE_MULT_NE: | |
3153 | /* XXX: case ATA_CMD_CFA_WRITE_SECTORS_WITHOUT_ERASE: */ | |
3154 | case ATA_CMD_READ: | |
3155 | case ATA_CMD_READ_EXT: | |
3156 | case ATA_CMD_READ_QUEUED: | |
3157 | /* XXX: case ATA_CMD_READ_QUEUED_EXT: */ | |
3158 | case ATA_CMD_FPDMA_READ: | |
3159 | case ATA_CMD_READ_MULTI: | |
3160 | case ATA_CMD_READ_MULTI_EXT: | |
3161 | case ATA_CMD_PIO_READ: | |
3162 | case ATA_CMD_PIO_READ_EXT: | |
3163 | case ATA_CMD_READ_STREAM_DMA_EXT: | |
3164 | case ATA_CMD_READ_STREAM_EXT: | |
3165 | case ATA_CMD_VERIFY: | |
3166 | case ATA_CMD_VERIFY_EXT: | |
3167 | case ATA_CMD_WRITE: | |
3168 | case ATA_CMD_WRITE_EXT: | |
3169 | case ATA_CMD_WRITE_FUA_EXT: | |
3170 | case ATA_CMD_WRITE_QUEUED: | |
3171 | case ATA_CMD_WRITE_QUEUED_FUA_EXT: | |
3172 | case ATA_CMD_FPDMA_WRITE: | |
3173 | case ATA_CMD_WRITE_MULTI: | |
3174 | case ATA_CMD_WRITE_MULTI_EXT: | |
3175 | case ATA_CMD_WRITE_MULTI_FUA_EXT: | |
3176 | case ATA_CMD_PIO_WRITE: | |
3177 | case ATA_CMD_PIO_WRITE_EXT: | |
3178 | case ATA_CMD_WRITE_STREAM_DMA_EXT: | |
3179 | case ATA_CMD_WRITE_STREAM_EXT: | |
3180 | qc->sect_size = scmd->device->sector_size; | |
3181 | break; | |
3182 | ||
3183 | /* Everything else uses 512 byte "sectors" */ | |
3184 | default: | |
3185 | qc->sect_size = ATA_SECT_SIZE; | |
bd30add8 TH |
3186 | } |
3187 | ||
3188 | /* | |
3189 | * Set flags so that all registers will be written, pass on | |
3190 | * write indication (used for PIO/DMA setup), result TF is | |
3191 | * copied back and we don't whine too much about its failure. | |
3192 | */ | |
bc496ed0 | 3193 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
bd30add8 TH |
3194 | if (scmd->sc_data_direction == DMA_TO_DEVICE) |
3195 | tf->flags |= ATA_TFLAG_WRITE; | |
3196 | ||
3197 | qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET; | |
3198 | ||
3199 | /* | |
3200 | * Set transfer length. | |
3201 | * | |
3202 | * TODO: find out if we need to do more here to | |
3203 | * cover scatter/gather case. | |
3204 | */ | |
3205 | ata_qc_set_pc_nbytes(qc); | |
3206 | ||
3207 | /* We may not issue DMA commands if no DMA mode is set */ | |
bcfc867d HR |
3208 | if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0) { |
3209 | fp = 1; | |
bd30add8 | 3210 | goto invalid_fld; |
bcfc867d | 3211 | } |
bd30add8 | 3212 | |
1dce589c | 3213 | /* sanity check for pio multi commands */ |
bcfc867d HR |
3214 | if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf)) { |
3215 | fp = 1; | |
1dce589c | 3216 | goto invalid_fld; |
bcfc867d | 3217 | } |
1dce589c AL |
3218 | |
3219 | if (is_multi_taskfile(tf)) { | |
3220 | unsigned int multi_count = 1 << (cdb[1] >> 5); | |
3221 | ||
3222 | /* compare the passed through multi_count | |
3223 | * with the cached multi_count of libata | |
3224 | */ | |
3225 | if (multi_count != dev->multi_count) | |
a9a79dfe JP |
3226 | ata_dev_warn(dev, "invalid multi_count %u ignored\n", |
3227 | multi_count); | |
d26fc955 | 3228 | } |
1dce589c | 3229 | |
b095518e JG |
3230 | /* |
3231 | * Filter SET_FEATURES - XFER MODE command -- otherwise, | |
3232 | * SET_FEATURES - XFER MODE must be preceded/succeeded | |
3233 | * by an update to hardware-specific registers for each | |
3234 | * controller (i.e. the reason for ->set_piomode(), | |
3235 | * ->set_dmamode(), and ->post_set_mode() hooks). | |
3236 | */ | |
bd30add8 | 3237 | if (tf->command == ATA_CMD_SET_FEATURES && |
bcfc867d HR |
3238 | tf->feature == SETFEATURES_XFER) { |
3239 | fp = (cdb[0] == ATA_16) ? 4 : 3; | |
9a405257 | 3240 | goto invalid_fld; |
bcfc867d | 3241 | } |
b095518e JG |
3242 | |
3243 | /* | |
bd30add8 TH |
3244 | * Filter TPM commands by default. These provide an |
3245 | * essentially uncontrolled encrypted "back door" between | |
3246 | * applications and the disk. Set libata.allow_tpm=1 if you | |
3247 | * have a real reason for wanting to use them. This ensures | |
3248 | * that installed software cannot easily mess stuff up without | |
3249 | * user intent. DVR type users will probably ship with this enabled | |
3250 | * for movie content management. | |
b095518e | 3251 | * |
bd30add8 TH |
3252 | * Note that for ATA8 we can issue a DCS change and DCS freeze lock |
3253 | * for this and should do in future but that it is not sufficient as | |
3254 | * DCS is an optional feature set. Thus we also do the software filter | |
3255 | * so that we comply with the TC consortium stated goal that the user | |
3256 | * can turn off TC features of their system. | |
b095518e | 3257 | */ |
bcfc867d HR |
3258 | if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm) { |
3259 | fp = (cdb[0] == ATA_16) ? 14 : 9; | |
bd30add8 | 3260 | goto invalid_fld; |
bcfc867d | 3261 | } |
e61e0672 | 3262 | |
b095518e | 3263 | return 0; |
9a405257 TH |
3264 | |
3265 | invalid_fld: | |
0df10b84 | 3266 | ata_scsi_set_invalid_field(dev, scmd, fp, 0xff); |
9a405257 | 3267 | return 1; |
b095518e JG |
3268 | } |
3269 | ||
18f0f978 CH |
3270 | static unsigned int ata_scsi_write_same_xlat(struct ata_queued_cmd *qc) |
3271 | { | |
3272 | struct ata_taskfile *tf = &qc->tf; | |
3273 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3274 | struct ata_device *dev = qc->dev; | |
3275 | const u8 *cdb = scmd->cmnd; | |
3276 | u64 block; | |
3277 | u32 n_block; | |
3278 | u32 size; | |
3279 | void *buf; | |
bcfc867d | 3280 | u16 fp; |
0df10b84 | 3281 | u8 bp = 0xff; |
18f0f978 CH |
3282 | |
3283 | /* we may not issue DMA commands if no DMA mode is set */ | |
3284 | if (unlikely(!dev->dma_mode)) | |
bcfc867d | 3285 | goto invalid_opcode; |
18f0f978 | 3286 | |
bcfc867d HR |
3287 | if (unlikely(scmd->cmd_len < 16)) { |
3288 | fp = 15; | |
18f0f978 | 3289 | goto invalid_fld; |
bcfc867d | 3290 | } |
18f0f978 CH |
3291 | scsi_16_lba_len(cdb, &block, &n_block); |
3292 | ||
3293 | /* for now we only support WRITE SAME with the unmap bit set */ | |
bcfc867d HR |
3294 | if (unlikely(!(cdb[1] & 0x8))) { |
3295 | fp = 1; | |
0df10b84 | 3296 | bp = 3; |
18f0f978 | 3297 | goto invalid_fld; |
bcfc867d | 3298 | } |
18f0f978 CH |
3299 | |
3300 | /* | |
3301 | * WRITE SAME always has a sector sized buffer as payload, this | |
3302 | * should never be a multiple entry S/G list. | |
3303 | */ | |
3304 | if (!scsi_sg_count(scmd)) | |
bcfc867d | 3305 | goto invalid_param_len; |
18f0f978 CH |
3306 | |
3307 | buf = page_address(sg_page(scsi_sglist(scmd))); | |
d0634c4a | 3308 | size = ata_set_lba_range_entries(buf, 512, block, n_block); |
18f0f978 | 3309 | |
87fb6c31 MC |
3310 | if (ata_ncq_enabled(dev) && ata_fpdma_dsm_supported(dev)) { |
3311 | /* Newer devices support queued TRIM commands */ | |
3312 | tf->protocol = ATA_PROT_NCQ; | |
3313 | tf->command = ATA_CMD_FPDMA_SEND; | |
3314 | tf->hob_nsect = ATA_SUBCMD_FPDMA_SEND_DSM & 0x1f; | |
3315 | tf->nsect = qc->tag << 3; | |
3316 | tf->hob_feature = (size / 512) >> 8; | |
3317 | tf->feature = size / 512; | |
3318 | ||
3319 | tf->auxiliary = 1; | |
3320 | } else { | |
3321 | tf->protocol = ATA_PROT_DMA; | |
3322 | tf->hob_feature = 0; | |
3323 | tf->feature = ATA_DSM_TRIM; | |
3324 | tf->hob_nsect = (size / 512) >> 8; | |
3325 | tf->nsect = size / 512; | |
3326 | tf->command = ATA_CMD_DSM; | |
3327 | } | |
3328 | ||
18f0f978 CH |
3329 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 | |
3330 | ATA_TFLAG_WRITE; | |
3331 | ||
3332 | ata_qc_set_pc_nbytes(qc); | |
3333 | ||
3334 | return 0; | |
3335 | ||
bcfc867d | 3336 | invalid_fld: |
0df10b84 | 3337 | ata_scsi_set_invalid_field(dev, scmd, fp, bp); |
bcfc867d HR |
3338 | return 1; |
3339 | invalid_param_len: | |
3340 | /* "Parameter list length error" */ | |
3341 | ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
3342 | return 1; | |
3343 | invalid_opcode: | |
3344 | /* "Invalid command operation code" */ | |
3345 | ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x20, 0x0); | |
18f0f978 CH |
3346 | return 1; |
3347 | } | |
3348 | ||
28a3fc22 HR |
3349 | /** |
3350 | * ata_scsi_report_zones_complete - convert ATA output | |
3351 | * @qc: command structure returning the data | |
3352 | * | |
3353 | * Convert T-13 little-endian field representation into | |
3354 | * T-10 big-endian field representation. | |
3355 | * What a mess. | |
3356 | */ | |
3357 | static void ata_scsi_report_zones_complete(struct ata_queued_cmd *qc) | |
3358 | { | |
3359 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3360 | struct sg_mapping_iter miter; | |
3361 | unsigned long flags; | |
3362 | unsigned int bytes = 0; | |
3363 | ||
3364 | sg_miter_start(&miter, scsi_sglist(scmd), scsi_sg_count(scmd), | |
3365 | SG_MITER_TO_SG | SG_MITER_ATOMIC); | |
3366 | ||
3367 | local_irq_save(flags); | |
3368 | while (sg_miter_next(&miter)) { | |
3369 | unsigned int offset = 0; | |
3370 | ||
3371 | if (bytes == 0) { | |
3372 | char *hdr; | |
3373 | u32 list_length; | |
3374 | u64 max_lba, opt_lba; | |
3375 | u16 same; | |
3376 | ||
3377 | /* Swizzle header */ | |
3378 | hdr = miter.addr; | |
3379 | list_length = get_unaligned_le32(&hdr[0]); | |
3380 | same = get_unaligned_le16(&hdr[4]); | |
3381 | max_lba = get_unaligned_le64(&hdr[8]); | |
3382 | opt_lba = get_unaligned_le64(&hdr[16]); | |
3383 | put_unaligned_be32(list_length, &hdr[0]); | |
3384 | hdr[4] = same & 0xf; | |
3385 | put_unaligned_be64(max_lba, &hdr[8]); | |
3386 | put_unaligned_be64(opt_lba, &hdr[16]); | |
3387 | offset += 64; | |
3388 | bytes += 64; | |
3389 | } | |
3390 | while (offset < miter.length) { | |
3391 | char *rec; | |
3392 | u8 cond, type, non_seq, reset; | |
3393 | u64 size, start, wp; | |
3394 | ||
3395 | /* Swizzle zone descriptor */ | |
3396 | rec = miter.addr + offset; | |
3397 | type = rec[0] & 0xf; | |
3398 | cond = (rec[1] >> 4) & 0xf; | |
3399 | non_seq = (rec[1] & 2); | |
3400 | reset = (rec[1] & 1); | |
3401 | size = get_unaligned_le64(&rec[8]); | |
3402 | start = get_unaligned_le64(&rec[16]); | |
3403 | wp = get_unaligned_le64(&rec[24]); | |
3404 | rec[0] = type; | |
3405 | rec[1] = (cond << 4) | non_seq | reset; | |
3406 | put_unaligned_be64(size, &rec[8]); | |
3407 | put_unaligned_be64(start, &rec[16]); | |
3408 | put_unaligned_be64(wp, &rec[24]); | |
3409 | WARN_ON(offset + 64 > miter.length); | |
3410 | offset += 64; | |
3411 | bytes += 64; | |
3412 | } | |
3413 | } | |
3414 | sg_miter_stop(&miter); | |
3415 | local_irq_restore(flags); | |
3416 | ||
3417 | ata_scsi_qc_complete(qc); | |
3418 | } | |
3419 | ||
3420 | static unsigned int ata_scsi_zbc_in_xlat(struct ata_queued_cmd *qc) | |
3421 | { | |
3422 | struct ata_taskfile *tf = &qc->tf; | |
3423 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3424 | const u8 *cdb = scmd->cmnd; | |
3425 | u16 sect, fp = (u16)-1; | |
3426 | u8 sa, options, bp = 0xff; | |
3427 | u64 block; | |
3428 | u32 n_block; | |
3429 | ||
3430 | if (unlikely(scmd->cmd_len < 16)) { | |
3431 | ata_dev_warn(qc->dev, "invalid cdb length %d\n", | |
3432 | scmd->cmd_len); | |
3433 | fp = 15; | |
3434 | goto invalid_fld; | |
3435 | } | |
3436 | scsi_16_lba_len(cdb, &block, &n_block); | |
3437 | if (n_block != scsi_bufflen(scmd)) { | |
3438 | ata_dev_warn(qc->dev, "non-matching transfer count (%d/%d)\n", | |
3439 | n_block, scsi_bufflen(scmd)); | |
3440 | goto invalid_param_len; | |
3441 | } | |
3442 | sa = cdb[1] & 0x1f; | |
3443 | if (sa != ZI_REPORT_ZONES) { | |
3444 | ata_dev_warn(qc->dev, "invalid service action %d\n", sa); | |
3445 | fp = 1; | |
3446 | goto invalid_fld; | |
3447 | } | |
3448 | /* | |
3449 | * ZAC allows only for transfers in 512 byte blocks, | |
3450 | * and uses a 16 bit value for the transfer count. | |
3451 | */ | |
3452 | if ((n_block / 512) > 0xffff || n_block < 512 || (n_block % 512)) { | |
3453 | ata_dev_warn(qc->dev, "invalid transfer count %d\n", n_block); | |
3454 | goto invalid_param_len; | |
3455 | } | |
3456 | sect = n_block / 512; | |
3457 | options = cdb[14]; | |
3458 | ||
3459 | if (ata_ncq_enabled(qc->dev) && | |
3460 | ata_fpdma_zac_mgmt_in_supported(qc->dev)) { | |
3461 | tf->protocol = ATA_PROT_NCQ; | |
3462 | tf->command = ATA_CMD_FPDMA_RECV; | |
3463 | tf->hob_nsect = ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN & 0x1f; | |
3464 | tf->nsect = qc->tag << 3; | |
3465 | tf->feature = sect & 0xff; | |
3466 | tf->hob_feature = (sect >> 8) & 0xff; | |
3467 | tf->auxiliary = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES; | |
3468 | } else { | |
3469 | tf->command = ATA_CMD_ZAC_MGMT_IN; | |
3470 | tf->feature = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES; | |
3471 | tf->protocol = ATA_PROT_DMA; | |
3472 | tf->hob_feature = options; | |
3473 | tf->hob_nsect = (sect >> 8) & 0xff; | |
3474 | tf->nsect = sect & 0xff; | |
3475 | } | |
3476 | tf->device = ATA_LBA; | |
3477 | tf->lbah = (block >> 16) & 0xff; | |
3478 | tf->lbam = (block >> 8) & 0xff; | |
3479 | tf->lbal = block & 0xff; | |
3480 | tf->hob_lbah = (block >> 40) & 0xff; | |
3481 | tf->hob_lbam = (block >> 32) & 0xff; | |
3482 | tf->hob_lbal = (block >> 24) & 0xff; | |
3483 | ||
3484 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48; | |
3485 | qc->flags |= ATA_QCFLAG_RESULT_TF; | |
3486 | ||
3487 | ata_qc_set_pc_nbytes(qc); | |
3488 | ||
3489 | qc->complete_fn = ata_scsi_report_zones_complete; | |
3490 | ||
3491 | return 0; | |
3492 | ||
3493 | invalid_fld: | |
3494 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); | |
3495 | return 1; | |
3496 | ||
3497 | invalid_param_len: | |
3498 | /* "Parameter list length error" */ | |
3499 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
3500 | return 1; | |
3501 | } | |
3502 | ||
27708a95 HR |
3503 | static unsigned int ata_scsi_zbc_out_xlat(struct ata_queued_cmd *qc) |
3504 | { | |
3505 | struct ata_taskfile *tf = &qc->tf; | |
3506 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3507 | struct ata_device *dev = qc->dev; | |
3508 | const u8 *cdb = scmd->cmnd; | |
3509 | u8 reset_all, sa; | |
3510 | u64 block; | |
3511 | u32 n_block; | |
3512 | u16 fp = (u16)-1; | |
3513 | ||
3514 | if (unlikely(scmd->cmd_len < 16)) { | |
3515 | fp = 15; | |
3516 | goto invalid_fld; | |
3517 | } | |
3518 | ||
3519 | sa = cdb[1] & 0x1f; | |
3520 | if ((sa != ZO_CLOSE_ZONE) && (sa != ZO_FINISH_ZONE) && | |
3521 | (sa != ZO_OPEN_ZONE) && (sa != ZO_RESET_WRITE_POINTER)) { | |
3522 | fp = 1; | |
3523 | goto invalid_fld; | |
3524 | } | |
3525 | ||
3526 | scsi_16_lba_len(cdb, &block, &n_block); | |
3527 | if (n_block) { | |
3528 | /* | |
3529 | * ZAC MANAGEMENT OUT doesn't define any length | |
3530 | */ | |
3531 | goto invalid_param_len; | |
3532 | } | |
3533 | if (block > dev->n_sectors) | |
3534 | goto out_of_range; | |
3535 | ||
3536 | reset_all = cdb[14] & 0x1; | |
3537 | ||
284b3b77 HR |
3538 | if (ata_ncq_enabled(qc->dev) && |
3539 | ata_fpdma_zac_mgmt_out_supported(qc->dev)) { | |
3540 | tf->protocol = ATA_PROT_NCQ; | |
3541 | tf->command = ATA_CMD_NCQ_NON_DATA; | |
3542 | tf->hob_nsect = ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT; | |
3543 | tf->nsect = qc->tag << 3; | |
3544 | tf->auxiliary = sa | (reset_all & 0x1) << 8; | |
3545 | } else { | |
3546 | tf->protocol = ATA_PROT_NODATA; | |
3547 | tf->command = ATA_CMD_ZAC_MGMT_OUT; | |
3548 | tf->feature = sa; | |
3549 | tf->hob_feature = reset_all & 0x1; | |
3550 | } | |
27708a95 HR |
3551 | tf->lbah = (block >> 16) & 0xff; |
3552 | tf->lbam = (block >> 8) & 0xff; | |
3553 | tf->lbal = block & 0xff; | |
3554 | tf->hob_lbah = (block >> 40) & 0xff; | |
3555 | tf->hob_lbam = (block >> 32) & 0xff; | |
3556 | tf->hob_lbal = (block >> 24) & 0xff; | |
3557 | tf->device = ATA_LBA; | |
3558 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48; | |
3559 | ||
3560 | return 0; | |
3561 | ||
18f0f978 | 3562 | invalid_fld: |
27708a95 HR |
3563 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
3564 | return 1; | |
3565 | out_of_range: | |
3566 | /* "Logical Block Address out of range" */ | |
3567 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x00); | |
3568 | return 1; | |
3569 | invalid_param_len: | |
3570 | /* "Parameter list length error" */ | |
3571 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
18f0f978 CH |
3572 | return 1; |
3573 | } | |
3574 | ||
1b26d29c PB |
3575 | /** |
3576 | * ata_mselect_caching - Simulate MODE SELECT for caching info page | |
3577 | * @qc: Storage for translated ATA taskfile | |
3578 | * @buf: input buffer | |
3579 | * @len: number of valid bytes in the input buffer | |
7780081c | 3580 | * @fp: out parameter for the failed field on error |
1b26d29c PB |
3581 | * |
3582 | * Prepare a taskfile to modify caching information for the device. | |
3583 | * | |
3584 | * LOCKING: | |
3585 | * None. | |
3586 | */ | |
3587 | static int ata_mselect_caching(struct ata_queued_cmd *qc, | |
7780081c | 3588 | const u8 *buf, int len, u16 *fp) |
1b26d29c PB |
3589 | { |
3590 | struct ata_taskfile *tf = &qc->tf; | |
3591 | struct ata_device *dev = qc->dev; | |
3592 | char mpage[CACHE_MPAGE_LEN]; | |
3593 | u8 wce; | |
7780081c | 3594 | int i; |
1b26d29c PB |
3595 | |
3596 | /* | |
3597 | * The first two bytes of def_cache_mpage are a header, so offsets | |
3598 | * in mpage are off by 2 compared to buf. Same for len. | |
3599 | */ | |
3600 | ||
7780081c HR |
3601 | if (len != CACHE_MPAGE_LEN - 2) { |
3602 | if (len < CACHE_MPAGE_LEN - 2) | |
3603 | *fp = len; | |
3604 | else | |
3605 | *fp = CACHE_MPAGE_LEN - 2; | |
1b26d29c | 3606 | return -EINVAL; |
7780081c | 3607 | } |
1b26d29c PB |
3608 | |
3609 | wce = buf[0] & (1 << 2); | |
3610 | ||
3611 | /* | |
3612 | * Check that read-only bits are not modified. | |
3613 | */ | |
3614 | ata_msense_caching(dev->id, mpage, false); | |
7780081c HR |
3615 | for (i = 0; i < CACHE_MPAGE_LEN - 2; i++) { |
3616 | if (i == 0) | |
3617 | continue; | |
3618 | if (mpage[i + 2] != buf[i]) { | |
3619 | *fp = i; | |
3620 | return -EINVAL; | |
3621 | } | |
3622 | } | |
1b26d29c PB |
3623 | |
3624 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; | |
3625 | tf->protocol = ATA_PROT_NODATA; | |
3626 | tf->nsect = 0; | |
3627 | tf->command = ATA_CMD_SET_FEATURES; | |
3628 | tf->feature = wce ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF; | |
3629 | return 0; | |
3630 | } | |
3631 | ||
06dbde5f HR |
3632 | /** |
3633 | * ata_mselect_control - Simulate MODE SELECT for control page | |
3634 | * @qc: Storage for translated ATA taskfile | |
3635 | * @buf: input buffer | |
3636 | * @len: number of valid bytes in the input buffer | |
7780081c | 3637 | * @fp: out parameter for the failed field on error |
06dbde5f HR |
3638 | * |
3639 | * Prepare a taskfile to modify caching information for the device. | |
3640 | * | |
3641 | * LOCKING: | |
3642 | * None. | |
3643 | */ | |
3644 | static int ata_mselect_control(struct ata_queued_cmd *qc, | |
7780081c | 3645 | const u8 *buf, int len, u16 *fp) |
06dbde5f HR |
3646 | { |
3647 | struct ata_device *dev = qc->dev; | |
3648 | char mpage[CONTROL_MPAGE_LEN]; | |
3649 | u8 d_sense; | |
7780081c | 3650 | int i; |
06dbde5f HR |
3651 | |
3652 | /* | |
3653 | * The first two bytes of def_control_mpage are a header, so offsets | |
3654 | * in mpage are off by 2 compared to buf. Same for len. | |
3655 | */ | |
3656 | ||
7780081c HR |
3657 | if (len != CONTROL_MPAGE_LEN - 2) { |
3658 | if (len < CONTROL_MPAGE_LEN - 2) | |
3659 | *fp = len; | |
3660 | else | |
3661 | *fp = CONTROL_MPAGE_LEN - 2; | |
06dbde5f | 3662 | return -EINVAL; |
7780081c | 3663 | } |
06dbde5f HR |
3664 | |
3665 | d_sense = buf[0] & (1 << 2); | |
3666 | ||
3667 | /* | |
3668 | * Check that read-only bits are not modified. | |
3669 | */ | |
3670 | ata_msense_ctl_mode(dev, mpage, false); | |
7780081c HR |
3671 | for (i = 0; i < CONTROL_MPAGE_LEN - 2; i++) { |
3672 | if (i == 0) | |
3673 | continue; | |
3674 | if (mpage[2 + i] != buf[i]) { | |
3675 | *fp = i; | |
3676 | return -EINVAL; | |
3677 | } | |
3678 | } | |
06dbde5f HR |
3679 | if (d_sense & (1 << 2)) |
3680 | dev->flags |= ATA_DFLAG_D_SENSE; | |
3681 | else | |
3682 | dev->flags &= ~ATA_DFLAG_D_SENSE; | |
3683 | qc->scsicmd->result = SAM_STAT_GOOD; | |
3684 | qc->scsicmd->scsi_done(qc->scsicmd); | |
3685 | return 0; | |
3686 | } | |
3687 | ||
1b26d29c PB |
3688 | /** |
3689 | * ata_scsiop_mode_select - Simulate MODE SELECT 6, 10 commands | |
3690 | * @qc: Storage for translated ATA taskfile | |
3691 | * | |
3692 | * Converts a MODE SELECT command to an ATA SET FEATURES taskfile. | |
3693 | * Assume this is invoked for direct access devices (e.g. disks) only. | |
3694 | * There should be no block descriptor for other device types. | |
3695 | * | |
3696 | * LOCKING: | |
3697 | * spin_lock_irqsave(host lock) | |
3698 | */ | |
3699 | static unsigned int ata_scsi_mode_select_xlat(struct ata_queued_cmd *qc) | |
3700 | { | |
3701 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3702 | const u8 *cdb = scmd->cmnd; | |
3703 | const u8 *p; | |
3704 | u8 pg, spg; | |
3705 | unsigned six_byte, pg_len, hdr_len, bd_len; | |
3706 | int len; | |
7780081c HR |
3707 | u16 fp = (u16)-1; |
3708 | u8 bp = 0xff; | |
1b26d29c PB |
3709 | |
3710 | VPRINTK("ENTER\n"); | |
3711 | ||
3712 | six_byte = (cdb[0] == MODE_SELECT); | |
3713 | if (six_byte) { | |
bcfc867d HR |
3714 | if (scmd->cmd_len < 5) { |
3715 | fp = 4; | |
1b26d29c | 3716 | goto invalid_fld; |
bcfc867d | 3717 | } |
1b26d29c PB |
3718 | |
3719 | len = cdb[4]; | |
3720 | hdr_len = 4; | |
3721 | } else { | |
bcfc867d HR |
3722 | if (scmd->cmd_len < 9) { |
3723 | fp = 8; | |
1b26d29c | 3724 | goto invalid_fld; |
bcfc867d | 3725 | } |
1b26d29c PB |
3726 | |
3727 | len = (cdb[7] << 8) + cdb[8]; | |
3728 | hdr_len = 8; | |
3729 | } | |
3730 | ||
3731 | /* We only support PF=1, SP=0. */ | |
bcfc867d HR |
3732 | if ((cdb[1] & 0x11) != 0x10) { |
3733 | fp = 1; | |
0df10b84 | 3734 | bp = (cdb[1] & 0x01) ? 1 : 5; |
1b26d29c | 3735 | goto invalid_fld; |
bcfc867d | 3736 | } |
1b26d29c PB |
3737 | |
3738 | /* Test early for possible overrun. */ | |
3739 | if (!scsi_sg_count(scmd) || scsi_sglist(scmd)->length < len) | |
3740 | goto invalid_param_len; | |
3741 | ||
3742 | p = page_address(sg_page(scsi_sglist(scmd))); | |
3743 | ||
3744 | /* Move past header and block descriptors. */ | |
3745 | if (len < hdr_len) | |
3746 | goto invalid_param_len; | |
3747 | ||
3748 | if (six_byte) | |
3749 | bd_len = p[3]; | |
3750 | else | |
3751 | bd_len = (p[6] << 8) + p[7]; | |
3752 | ||
3753 | len -= hdr_len; | |
3754 | p += hdr_len; | |
3755 | if (len < bd_len) | |
3756 | goto invalid_param_len; | |
7780081c HR |
3757 | if (bd_len != 0 && bd_len != 8) { |
3758 | fp = (six_byte) ? 3 : 6; | |
3759 | fp += bd_len + hdr_len; | |
1b26d29c | 3760 | goto invalid_param; |
7780081c | 3761 | } |
1b26d29c PB |
3762 | |
3763 | len -= bd_len; | |
3764 | p += bd_len; | |
3765 | if (len == 0) | |
3766 | goto skip; | |
3767 | ||
3768 | /* Parse both possible formats for the mode page headers. */ | |
3769 | pg = p[0] & 0x3f; | |
3770 | if (p[0] & 0x40) { | |
3771 | if (len < 4) | |
3772 | goto invalid_param_len; | |
3773 | ||
3774 | spg = p[1]; | |
3775 | pg_len = (p[2] << 8) | p[3]; | |
3776 | p += 4; | |
3777 | len -= 4; | |
3778 | } else { | |
3779 | if (len < 2) | |
3780 | goto invalid_param_len; | |
3781 | ||
3782 | spg = 0; | |
3783 | pg_len = p[1]; | |
3784 | p += 2; | |
3785 | len -= 2; | |
3786 | } | |
3787 | ||
3788 | /* | |
3789 | * No mode subpages supported (yet) but asking for _all_ | |
3790 | * subpages may be valid | |
3791 | */ | |
7780081c HR |
3792 | if (spg && (spg != ALL_SUB_MPAGES)) { |
3793 | fp = (p[0] & 0x40) ? 1 : 0; | |
3794 | fp += hdr_len + bd_len; | |
1b26d29c | 3795 | goto invalid_param; |
7780081c | 3796 | } |
1b26d29c PB |
3797 | if (pg_len > len) |
3798 | goto invalid_param_len; | |
3799 | ||
3800 | switch (pg) { | |
3801 | case CACHE_MPAGE: | |
7780081c HR |
3802 | if (ata_mselect_caching(qc, p, pg_len, &fp) < 0) { |
3803 | fp += hdr_len + bd_len; | |
1b26d29c | 3804 | goto invalid_param; |
7780081c | 3805 | } |
1b26d29c | 3806 | break; |
06dbde5f | 3807 | case CONTROL_MPAGE: |
7780081c HR |
3808 | if (ata_mselect_control(qc, p, pg_len, &fp) < 0) { |
3809 | fp += hdr_len + bd_len; | |
06dbde5f | 3810 | goto invalid_param; |
7780081c | 3811 | } |
1b26d29c | 3812 | break; |
1b26d29c | 3813 | default: /* invalid page code */ |
7780081c | 3814 | fp = bd_len + hdr_len; |
1b26d29c PB |
3815 | goto invalid_param; |
3816 | } | |
3817 | ||
3818 | /* | |
3819 | * Only one page has changeable data, so we only support setting one | |
3820 | * page at a time. | |
3821 | */ | |
3822 | if (len > pg_len) | |
3823 | goto invalid_param; | |
3824 | ||
3825 | return 0; | |
3826 | ||
3827 | invalid_fld: | |
0df10b84 | 3828 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); |
1b26d29c PB |
3829 | return 1; |
3830 | ||
3831 | invalid_param: | |
7780081c | 3832 | ata_scsi_set_invalid_parameter(qc->dev, scmd, fp); |
1b26d29c PB |
3833 | return 1; |
3834 | ||
3835 | invalid_param_len: | |
3836 | /* "Parameter list length error" */ | |
06dbde5f | 3837 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); |
1b26d29c PB |
3838 | return 1; |
3839 | ||
3840 | skip: | |
3841 | scmd->result = SAM_STAT_GOOD; | |
3842 | return 1; | |
3843 | } | |
3844 | ||
1da177e4 LT |
3845 | /** |
3846 | * ata_get_xlat_func - check if SCSI to ATA translation is possible | |
3847 | * @dev: ATA device | |
3848 | * @cmd: SCSI command opcode to consider | |
3849 | * | |
3850 | * Look up the SCSI command given, and determine whether the | |
3851 | * SCSI command is to be translated or simulated. | |
3852 | * | |
3853 | * RETURNS: | |
3854 | * Pointer to translation function if possible, %NULL if not. | |
3855 | */ | |
3856 | ||
3857 | static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd) | |
3858 | { | |
3859 | switch (cmd) { | |
3860 | case READ_6: | |
3861 | case READ_10: | |
3862 | case READ_16: | |
3863 | ||
3864 | case WRITE_6: | |
3865 | case WRITE_10: | |
3866 | case WRITE_16: | |
3867 | return ata_scsi_rw_xlat; | |
3868 | ||
0cdd6eb7 | 3869 | case WRITE_SAME_16: |
18f0f978 CH |
3870 | return ata_scsi_write_same_xlat; |
3871 | ||
1da177e4 LT |
3872 | case SYNCHRONIZE_CACHE: |
3873 | if (ata_try_flush_cache(dev)) | |
3874 | return ata_scsi_flush_xlat; | |
3875 | break; | |
3876 | ||
3877 | case VERIFY: | |
3878 | case VERIFY_16: | |
3879 | return ata_scsi_verify_xlat; | |
b095518e JG |
3880 | |
3881 | case ATA_12: | |
3882 | case ATA_16: | |
3883 | return ata_scsi_pass_thru; | |
da61396d | 3884 | |
1b26d29c PB |
3885 | case MODE_SELECT: |
3886 | case MODE_SELECT_10: | |
3887 | return ata_scsi_mode_select_xlat; | |
3888 | break; | |
3889 | ||
28a3fc22 HR |
3890 | case ZBC_IN: |
3891 | return ata_scsi_zbc_in_xlat; | |
3892 | ||
27708a95 HR |
3893 | case ZBC_OUT: |
3894 | return ata_scsi_zbc_out_xlat; | |
3895 | ||
972dcafb DG |
3896 | case START_STOP: |
3897 | return ata_scsi_start_stop_xlat; | |
1da177e4 LT |
3898 | } |
3899 | ||
3900 | return NULL; | |
3901 | } | |
3902 | ||
3903 | /** | |
3904 | * ata_scsi_dump_cdb - dump SCSI command contents to dmesg | |
3905 | * @ap: ATA port to which the command was being sent | |
3906 | * @cmd: SCSI command to dump | |
3907 | * | |
3908 | * Prints the contents of a SCSI command via printk(). | |
3909 | */ | |
3910 | ||
3911 | static inline void ata_scsi_dump_cdb(struct ata_port *ap, | |
3912 | struct scsi_cmnd *cmd) | |
3913 | { | |
3914 | #ifdef ATA_DEBUG | |
3915 | struct scsi_device *scsidev = cmd->device; | |
1da177e4 | 3916 | |
26f58830 | 3917 | DPRINTK("CDB (%u:%d,%d,%d) %9ph\n", |
44877b4e | 3918 | ap->print_id, |
1da177e4 | 3919 | scsidev->channel, scsidev->id, scsidev->lun, |
26f58830 | 3920 | cmd->cmnd); |
1da177e4 LT |
3921 | #endif |
3922 | } | |
3923 | ||
542b1444 | 3924 | static inline int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, |
2115ea94 | 3925 | struct ata_device *dev) |
eb3f0f9c | 3926 | { |
baf4fdfa ML |
3927 | u8 scsi_op = scmd->cmnd[0]; |
3928 | ata_xlat_func_t xlat_func; | |
2115ea94 TH |
3929 | int rc = 0; |
3930 | ||
9162c657 | 3931 | if (dev->class == ATA_DEV_ATA || dev->class == ATA_DEV_ZAC) { |
baf4fdfa ML |
3932 | if (unlikely(!scmd->cmd_len || scmd->cmd_len > dev->cdb_len)) |
3933 | goto bad_cdb_len; | |
eb3f0f9c | 3934 | |
baf4fdfa ML |
3935 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
3936 | } else { | |
3937 | if (unlikely(!scmd->cmd_len)) | |
3938 | goto bad_cdb_len; | |
3939 | ||
3940 | xlat_func = NULL; | |
3941 | if (likely((scsi_op != ATA_16) || !atapi_passthru16)) { | |
3942 | /* relay SCSI command to ATAPI device */ | |
607126c2 ML |
3943 | int len = COMMAND_SIZE(scsi_op); |
3944 | if (unlikely(len > scmd->cmd_len || len > dev->cdb_len)) | |
baf4fdfa ML |
3945 | goto bad_cdb_len; |
3946 | ||
3947 | xlat_func = atapi_xlat; | |
3948 | } else { | |
3949 | /* ATA_16 passthru, treat as an ATA command */ | |
3950 | if (unlikely(scmd->cmd_len > 16)) | |
3951 | goto bad_cdb_len; | |
3952 | ||
3953 | xlat_func = ata_get_xlat_func(dev, scsi_op); | |
3954 | } | |
3955 | } | |
3956 | ||
3957 | if (xlat_func) | |
b27dcfb0 | 3958 | rc = ata_scsi_translate(dev, scmd, xlat_func); |
baf4fdfa | 3959 | else |
b27dcfb0 | 3960 | ata_scsi_simulate(dev, scmd); |
2115ea94 TH |
3961 | |
3962 | return rc; | |
baf4fdfa ML |
3963 | |
3964 | bad_cdb_len: | |
3965 | DPRINTK("bad CDB len=%u, scsi_op=0x%02x, max=%u\n", | |
3966 | scmd->cmd_len, scsi_op, dev->cdb_len); | |
3967 | scmd->result = DID_ERROR << 16; | |
b27dcfb0 | 3968 | scmd->scsi_done(scmd); |
baf4fdfa | 3969 | return 0; |
eb3f0f9c BK |
3970 | } |
3971 | ||
1da177e4 LT |
3972 | /** |
3973 | * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device | |
23e701e6 | 3974 | * @shost: SCSI host of command to be sent |
1da177e4 | 3975 | * @cmd: SCSI command to be sent |
1da177e4 LT |
3976 | * |
3977 | * In some cases, this function translates SCSI commands into | |
3978 | * ATA taskfiles, and queues the taskfiles to be sent to | |
3979 | * hardware. In other cases, this function simulates a | |
3980 | * SCSI device by evaluating and responding to certain | |
3981 | * SCSI commands. This creates the overall effect of | |
3982 | * ATA and ATAPI devices appearing as SCSI devices. | |
3983 | * | |
3984 | * LOCKING: | |
23e701e6 | 3985 | * ATA host lock |
1da177e4 LT |
3986 | * |
3987 | * RETURNS: | |
2115ea94 TH |
3988 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
3989 | * 0 otherwise. | |
1da177e4 | 3990 | */ |
23e701e6 | 3991 | int ata_scsi_queuecmd(struct Scsi_Host *shost, struct scsi_cmnd *cmd) |
1da177e4 LT |
3992 | { |
3993 | struct ata_port *ap; | |
3994 | struct ata_device *dev; | |
3995 | struct scsi_device *scsidev = cmd->device; | |
2115ea94 | 3996 | int rc = 0; |
23e701e6 | 3997 | unsigned long irq_flags; |
1da177e4 | 3998 | |
35bb94b1 | 3999 | ap = ata_shost_to_port(shost); |
005a5a06 | 4000 | |
23e701e6 | 4001 | spin_lock_irqsave(ap->lock, irq_flags); |
1da177e4 LT |
4002 | |
4003 | ata_scsi_dump_cdb(ap, cmd); | |
4004 | ||
4005 | dev = ata_scsi_find_dev(ap, scsidev); | |
eb3f0f9c | 4006 | if (likely(dev)) |
b27dcfb0 | 4007 | rc = __ata_scsi_queuecmd(cmd, dev); |
eb3f0f9c | 4008 | else { |
1da177e4 | 4009 | cmd->result = (DID_BAD_TARGET << 16); |
23e701e6 | 4010 | cmd->scsi_done(cmd); |
1da177e4 LT |
4011 | } |
4012 | ||
23e701e6 JG |
4013 | spin_unlock_irqrestore(ap->lock, irq_flags); |
4014 | ||
2115ea94 | 4015 | return rc; |
1da177e4 LT |
4016 | } |
4017 | ||
4018 | /** | |
4019 | * ata_scsi_simulate - simulate SCSI command on ATA device | |
c893a3ae | 4020 | * @dev: the target device |
1da177e4 | 4021 | * @cmd: SCSI command being sent to device. |
1da177e4 LT |
4022 | * |
4023 | * Interprets and directly executes a select list of SCSI commands | |
4024 | * that can be handled internally. | |
4025 | * | |
4026 | * LOCKING: | |
cca3974e | 4027 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
4028 | */ |
4029 | ||
b27dcfb0 | 4030 | void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd) |
1da177e4 LT |
4031 | { |
4032 | struct ata_scsi_args args; | |
057ace5e | 4033 | const u8 *scsicmd = cmd->cmnd; |
45394145 | 4034 | u8 tmp8; |
1da177e4 | 4035 | |
9a3dccc4 TH |
4036 | args.dev = dev; |
4037 | args.id = dev->id; | |
1da177e4 | 4038 | args.cmd = cmd; |
b27dcfb0 | 4039 | args.done = cmd->scsi_done; |
1da177e4 LT |
4040 | |
4041 | switch(scsicmd[0]) { | |
2dcb407e JG |
4042 | /* TODO: worth improving? */ |
4043 | case FORMAT_UNIT: | |
bcfc867d | 4044 | ata_scsi_invalid_field(dev, cmd, 0); |
2dcb407e JG |
4045 | break; |
4046 | ||
4047 | case INQUIRY: | |
bcfc867d HR |
4048 | if (scsicmd[1] & 2) /* is CmdDt set? */ |
4049 | ata_scsi_invalid_field(dev, cmd, 1); | |
2dcb407e JG |
4050 | else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */ |
4051 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std); | |
4052 | else switch (scsicmd[2]) { | |
4053 | case 0x00: | |
4054 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00); | |
1da177e4 | 4055 | break; |
2dcb407e JG |
4056 | case 0x80: |
4057 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80); | |
1da177e4 | 4058 | break; |
2dcb407e JG |
4059 | case 0x83: |
4060 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83); | |
1da177e4 | 4061 | break; |
2dcb407e JG |
4062 | case 0x89: |
4063 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89); | |
4064 | break; | |
18f0f978 CH |
4065 | case 0xb0: |
4066 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b0); | |
4067 | break; | |
1e9dbc92 MW |
4068 | case 0xb1: |
4069 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1); | |
4070 | break; | |
02e0a604 MP |
4071 | case 0xb2: |
4072 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b2); | |
4073 | break; | |
6d1003ae HR |
4074 | case 0xb6: |
4075 | if (dev->flags & ATA_DFLAG_ZAC) { | |
4076 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b6); | |
4077 | break; | |
4078 | } | |
4079 | /* Fallthrough */ | |
2dcb407e | 4080 | default: |
bcfc867d | 4081 | ata_scsi_invalid_field(dev, cmd, 2); |
1da177e4 | 4082 | break; |
2dcb407e JG |
4083 | } |
4084 | break; | |
4085 | ||
4086 | case MODE_SENSE: | |
4087 | case MODE_SENSE_10: | |
4088 | ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense); | |
4089 | break; | |
4090 | ||
2dcb407e JG |
4091 | case READ_CAPACITY: |
4092 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); | |
4093 | break; | |
4094 | ||
eb846d9f | 4095 | case SERVICE_ACTION_IN_16: |
2dcb407e | 4096 | if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16) |
1da177e4 | 4097 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
2dcb407e | 4098 | else |
bcfc867d | 4099 | ata_scsi_invalid_field(dev, cmd, 1); |
2dcb407e | 4100 | break; |
1da177e4 | 4101 | |
2dcb407e JG |
4102 | case REPORT_LUNS: |
4103 | ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns); | |
4104 | break; | |
1da177e4 | 4105 | |
2dcb407e | 4106 | case REQUEST_SENSE: |
06dbde5f | 4107 | ata_scsi_set_sense(dev, cmd, 0, 0, 0); |
2dcb407e | 4108 | cmd->result = (DRIVER_SENSE << 24); |
b27dcfb0 | 4109 | cmd->scsi_done(cmd); |
2dcb407e | 4110 | break; |
1da177e4 | 4111 | |
2dcb407e JG |
4112 | /* if we reach this, then writeback caching is disabled, |
4113 | * turning this into a no-op. | |
4114 | */ | |
4115 | case SYNCHRONIZE_CACHE: | |
4116 | /* fall through */ | |
4117 | ||
4118 | /* no-op's, complete with success */ | |
4119 | case REZERO_UNIT: | |
4120 | case SEEK_6: | |
4121 | case SEEK_10: | |
4122 | case TEST_UNIT_READY: | |
4123 | ata_scsi_rbuf_fill(&args, ata_scsiop_noop); | |
4124 | break; | |
45394145 | 4125 | |
2dcb407e JG |
4126 | case SEND_DIAGNOSTIC: |
4127 | tmp8 = scsicmd[1] & ~(1 << 3); | |
4128 | if ((tmp8 == 0x4) && (!scsicmd[3]) && (!scsicmd[4])) | |
00bd0202 | 4129 | ata_scsi_rbuf_fill(&args, ata_scsiop_noop); |
2dcb407e | 4130 | else |
bcfc867d | 4131 | ata_scsi_invalid_field(dev, cmd, 1); |
2dcb407e | 4132 | break; |
1da177e4 | 4133 | |
2dcb407e JG |
4134 | /* all other commands */ |
4135 | default: | |
06dbde5f | 4136 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x20, 0x0); |
2dcb407e | 4137 | /* "Invalid command operation code" */ |
b27dcfb0 | 4138 | cmd->scsi_done(cmd); |
2dcb407e | 4139 | break; |
1da177e4 LT |
4140 | } |
4141 | } | |
4142 | ||
f3187195 TH |
4143 | int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht) |
4144 | { | |
4145 | int i, rc; | |
4146 | ||
4147 | for (i = 0; i < host->n_ports; i++) { | |
4148 | struct ata_port *ap = host->ports[i]; | |
4149 | struct Scsi_Host *shost; | |
4150 | ||
4151 | rc = -ENOMEM; | |
4152 | shost = scsi_host_alloc(sht, sizeof(struct ata_port *)); | |
4153 | if (!shost) | |
4154 | goto err_alloc; | |
4155 | ||
9ee4f393 | 4156 | shost->eh_noresume = 1; |
f3187195 TH |
4157 | *(struct ata_port **)&shost->hostdata[0] = ap; |
4158 | ap->scsi_host = shost; | |
4159 | ||
d9027470 | 4160 | shost->transportt = ata_scsi_transport_template; |
f3187195 TH |
4161 | shost->unique_id = ap->print_id; |
4162 | shost->max_id = 16; | |
4163 | shost->max_lun = 1; | |
4164 | shost->max_channel = 1; | |
4165 | shost->max_cmd_len = 16; | |
54b2b50c | 4166 | shost->no_write_same = 1; |
f3187195 | 4167 | |
31cc23b3 TH |
4168 | /* Schedule policy is determined by ->qc_defer() |
4169 | * callback and it needs to see every deferred qc. | |
4170 | * Set host_blocked to 1 to prevent SCSI midlayer from | |
4171 | * automatically deferring requests. | |
4172 | */ | |
4173 | shost->max_host_blocked = 1; | |
4174 | ||
f8fc75dc LM |
4175 | rc = scsi_add_host_with_dma(ap->scsi_host, |
4176 | &ap->tdev, ap->host->dev); | |
f3187195 TH |
4177 | if (rc) |
4178 | goto err_add; | |
4179 | } | |
4180 | ||
4181 | return 0; | |
4182 | ||
4183 | err_add: | |
4184 | scsi_host_put(host->ports[i]->scsi_host); | |
4185 | err_alloc: | |
4186 | while (--i >= 0) { | |
4187 | struct Scsi_Host *shost = host->ports[i]->scsi_host; | |
4188 | ||
4189 | scsi_remove_host(shost); | |
4190 | scsi_host_put(shost); | |
4191 | } | |
4192 | return rc; | |
4193 | } | |
4194 | ||
1ae46317 | 4195 | void ata_scsi_scan_host(struct ata_port *ap, int sync) |
644dd0cc | 4196 | { |
1ae46317 TH |
4197 | int tries = 5; |
4198 | struct ata_device *last_failed_dev = NULL; | |
41bda9c9 | 4199 | struct ata_link *link; |
1ae46317 | 4200 | struct ata_device *dev; |
644dd0cc | 4201 | |
1ae46317 | 4202 | repeat: |
1eca4365 TH |
4203 | ata_for_each_link(link, ap, EDGE) { |
4204 | ata_for_each_dev(dev, link, ENABLED) { | |
41bda9c9 TH |
4205 | struct scsi_device *sdev; |
4206 | int channel = 0, id = 0; | |
3edebac4 | 4207 | |
1eca4365 | 4208 | if (dev->sdev) |
41bda9c9 | 4209 | continue; |
3f19ee8c | 4210 | |
41bda9c9 TH |
4211 | if (ata_is_host_link(link)) |
4212 | id = dev->devno; | |
4213 | else | |
4214 | channel = link->pmp; | |
4215 | ||
4216 | sdev = __scsi_add_device(ap->scsi_host, channel, id, 0, | |
4217 | NULL); | |
4218 | if (!IS_ERR(sdev)) { | |
4219 | dev->sdev = sdev; | |
4220 | scsi_device_put(sdev); | |
295124dc GG |
4221 | } else { |
4222 | dev->sdev = NULL; | |
41bda9c9 | 4223 | } |
3edebac4 | 4224 | } |
3f19ee8c | 4225 | } |
1ae46317 TH |
4226 | |
4227 | /* If we scanned while EH was in progress or allocation | |
4228 | * failure occurred, scan would have failed silently. Check | |
4229 | * whether all devices are attached. | |
4230 | */ | |
1eca4365 TH |
4231 | ata_for_each_link(link, ap, EDGE) { |
4232 | ata_for_each_dev(dev, link, ENABLED) { | |
4233 | if (!dev->sdev) | |
41bda9c9 TH |
4234 | goto exit_loop; |
4235 | } | |
1ae46317 | 4236 | } |
41bda9c9 TH |
4237 | exit_loop: |
4238 | if (!link) | |
1ae46317 TH |
4239 | return; |
4240 | ||
4241 | /* we're missing some SCSI devices */ | |
4242 | if (sync) { | |
4243 | /* If caller requested synchrnous scan && we've made | |
4244 | * any progress, sleep briefly and repeat. | |
4245 | */ | |
4246 | if (dev != last_failed_dev) { | |
4247 | msleep(100); | |
4248 | last_failed_dev = dev; | |
4249 | goto repeat; | |
4250 | } | |
4251 | ||
4252 | /* We might be failing to detect boot device, give it | |
4253 | * a few more chances. | |
4254 | */ | |
4255 | if (--tries) { | |
4256 | msleep(100); | |
4257 | goto repeat; | |
4258 | } | |
4259 | ||
a9a79dfe JP |
4260 | ata_port_err(ap, |
4261 | "WARNING: synchronous SCSI scan failed without making any progress, switching to async\n"); | |
1ae46317 TH |
4262 | } |
4263 | ||
ad72cf98 | 4264 | queue_delayed_work(system_long_wq, &ap->hotplug_task, |
1ae46317 | 4265 | round_jiffies_relative(HZ)); |
644dd0cc | 4266 | } |
0ea035a3 TH |
4267 | |
4268 | /** | |
4269 | * ata_scsi_offline_dev - offline attached SCSI device | |
4270 | * @dev: ATA device to offline attached SCSI device for | |
4271 | * | |
4272 | * This function is called from ata_eh_hotplug() and responsible | |
4273 | * for taking the SCSI device attached to @dev offline. This | |
cca3974e | 4274 | * function is called with host lock which protects dev->sdev |
0ea035a3 TH |
4275 | * against clearing. |
4276 | * | |
4277 | * LOCKING: | |
cca3974e | 4278 | * spin_lock_irqsave(host lock) |
0ea035a3 TH |
4279 | * |
4280 | * RETURNS: | |
4281 | * 1 if attached SCSI device exists, 0 otherwise. | |
4282 | */ | |
4283 | int ata_scsi_offline_dev(struct ata_device *dev) | |
4284 | { | |
4285 | if (dev->sdev) { | |
4286 | scsi_device_set_state(dev->sdev, SDEV_OFFLINE); | |
4287 | return 1; | |
4288 | } | |
4289 | return 0; | |
4290 | } | |
580b2102 TH |
4291 | |
4292 | /** | |
4293 | * ata_scsi_remove_dev - remove attached SCSI device | |
4294 | * @dev: ATA device to remove attached SCSI device for | |
4295 | * | |
4296 | * This function is called from ata_eh_scsi_hotplug() and | |
4297 | * responsible for removing the SCSI device attached to @dev. | |
4298 | * | |
4299 | * LOCKING: | |
4300 | * Kernel thread context (may sleep). | |
4301 | */ | |
4302 | static void ata_scsi_remove_dev(struct ata_device *dev) | |
4303 | { | |
9af5c9c9 | 4304 | struct ata_port *ap = dev->link->ap; |
580b2102 TH |
4305 | struct scsi_device *sdev; |
4306 | unsigned long flags; | |
4307 | ||
4308 | /* Alas, we need to grab scan_mutex to ensure SCSI device | |
4309 | * state doesn't change underneath us and thus | |
4310 | * scsi_device_get() always succeeds. The mutex locking can | |
4311 | * be removed if there is __scsi_device_get() interface which | |
4312 | * increments reference counts regardless of device state. | |
4313 | */ | |
cca3974e | 4314 | mutex_lock(&ap->scsi_host->scan_mutex); |
ba6a1308 | 4315 | spin_lock_irqsave(ap->lock, flags); |
580b2102 | 4316 | |
cca3974e | 4317 | /* clearing dev->sdev is protected by host lock */ |
580b2102 TH |
4318 | sdev = dev->sdev; |
4319 | dev->sdev = NULL; | |
4320 | ||
4321 | if (sdev) { | |
4322 | /* If user initiated unplug races with us, sdev can go | |
cca3974e | 4323 | * away underneath us after the host lock and |
580b2102 TH |
4324 | * scan_mutex are released. Hold onto it. |
4325 | */ | |
4326 | if (scsi_device_get(sdev) == 0) { | |
4327 | /* The following ensures the attached sdev is | |
4328 | * offline on return from ata_scsi_offline_dev() | |
4329 | * regardless it wins or loses the race | |
4330 | * against this function. | |
4331 | */ | |
4332 | scsi_device_set_state(sdev, SDEV_OFFLINE); | |
4333 | } else { | |
4334 | WARN_ON(1); | |
4335 | sdev = NULL; | |
4336 | } | |
4337 | } | |
4338 | ||
ba6a1308 | 4339 | spin_unlock_irqrestore(ap->lock, flags); |
cca3974e | 4340 | mutex_unlock(&ap->scsi_host->scan_mutex); |
580b2102 TH |
4341 | |
4342 | if (sdev) { | |
a9a79dfe JP |
4343 | ata_dev_info(dev, "detaching (SCSI %s)\n", |
4344 | dev_name(&sdev->sdev_gendev)); | |
580b2102 TH |
4345 | |
4346 | scsi_remove_device(sdev); | |
4347 | scsi_device_put(sdev); | |
4348 | } | |
4349 | } | |
4350 | ||
41bda9c9 TH |
4351 | static void ata_scsi_handle_link_detach(struct ata_link *link) |
4352 | { | |
4353 | struct ata_port *ap = link->ap; | |
4354 | struct ata_device *dev; | |
4355 | ||
1eca4365 | 4356 | ata_for_each_dev(dev, link, ALL) { |
41bda9c9 TH |
4357 | unsigned long flags; |
4358 | ||
4359 | if (!(dev->flags & ATA_DFLAG_DETACHED)) | |
4360 | continue; | |
4361 | ||
4362 | spin_lock_irqsave(ap->lock, flags); | |
4363 | dev->flags &= ~ATA_DFLAG_DETACHED; | |
4364 | spin_unlock_irqrestore(ap->lock, flags); | |
4365 | ||
f1bc1e4c AL |
4366 | if (zpodd_dev_enabled(dev)) |
4367 | zpodd_exit(dev); | |
4368 | ||
41bda9c9 TH |
4369 | ata_scsi_remove_dev(dev); |
4370 | } | |
4371 | } | |
4372 | ||
2f294968 KCA |
4373 | /** |
4374 | * ata_scsi_media_change_notify - send media change event | |
c5d0e6a0 | 4375 | * @dev: Pointer to the disk device with media change event |
2f294968 KCA |
4376 | * |
4377 | * Tell the block layer to send a media change notification | |
4378 | * event. | |
4379 | * | |
4380 | * LOCKING: | |
854c73a2 | 4381 | * spin_lock_irqsave(host lock) |
2f294968 | 4382 | */ |
854c73a2 | 4383 | void ata_scsi_media_change_notify(struct ata_device *dev) |
2f294968 | 4384 | { |
854c73a2 | 4385 | if (dev->sdev) |
f26792d5 JG |
4386 | sdev_evt_send_simple(dev->sdev, SDEV_EVT_MEDIA_CHANGE, |
4387 | GFP_ATOMIC); | |
2f294968 | 4388 | } |
2f294968 | 4389 | |
580b2102 TH |
4390 | /** |
4391 | * ata_scsi_hotplug - SCSI part of hotplug | |
65f27f38 | 4392 | * @work: Pointer to ATA port to perform SCSI hotplug on |
580b2102 TH |
4393 | * |
4394 | * Perform SCSI part of hotplug. It's executed from a separate | |
4395 | * workqueue after EH completes. This is necessary because SCSI | |
4396 | * hot plugging requires working EH and hot unplugging is | |
4397 | * synchronized with hot plugging with a mutex. | |
4398 | * | |
4399 | * LOCKING: | |
4400 | * Kernel thread context (may sleep). | |
4401 | */ | |
65f27f38 | 4402 | void ata_scsi_hotplug(struct work_struct *work) |
580b2102 | 4403 | { |
65f27f38 DH |
4404 | struct ata_port *ap = |
4405 | container_of(work, struct ata_port, hotplug_task.work); | |
41bda9c9 | 4406 | int i; |
580b2102 | 4407 | |
b51e9e5d | 4408 | if (ap->pflags & ATA_PFLAG_UNLOADING) { |
580b2102 TH |
4409 | DPRINTK("ENTER/EXIT - unloading\n"); |
4410 | return; | |
4411 | } | |
4412 | ||
85fbd722 TH |
4413 | /* |
4414 | * XXX - UGLY HACK | |
4415 | * | |
4416 | * The block layer suspend/resume path is fundamentally broken due | |
4417 | * to freezable kthreads and workqueue and may deadlock if a block | |
4418 | * device gets removed while resume is in progress. I don't know | |
4419 | * what the solution is short of removing freezable kthreads and | |
4420 | * workqueues altogether. | |
4421 | * | |
4422 | * The following is an ugly hack to avoid kicking off device | |
4423 | * removal while freezer is active. This is a joke but does avoid | |
4424 | * this particular deadlock scenario. | |
4425 | * | |
4426 | * https://bugzilla.kernel.org/show_bug.cgi?id=62801 | |
4427 | * http://marc.info/?l=linux-kernel&m=138695698516487 | |
4428 | */ | |
4429 | #ifdef CONFIG_FREEZER | |
4430 | while (pm_freezing) | |
4431 | msleep(10); | |
4432 | #endif | |
4433 | ||
580b2102 | 4434 | DPRINTK("ENTER\n"); |
ad72cf98 | 4435 | mutex_lock(&ap->scsi_scan_mutex); |
580b2102 | 4436 | |
41bda9c9 TH |
4437 | /* Unplug detached devices. We cannot use link iterator here |
4438 | * because PMP links have to be scanned even if PMP is | |
4439 | * currently not attached. Iterate manually. | |
4440 | */ | |
4441 | ata_scsi_handle_link_detach(&ap->link); | |
4442 | if (ap->pmp_link) | |
4443 | for (i = 0; i < SATA_PMP_MAX_PORTS; i++) | |
4444 | ata_scsi_handle_link_detach(&ap->pmp_link[i]); | |
580b2102 TH |
4445 | |
4446 | /* scan for new ones */ | |
1ae46317 | 4447 | ata_scsi_scan_host(ap, 0); |
580b2102 | 4448 | |
ad72cf98 | 4449 | mutex_unlock(&ap->scsi_scan_mutex); |
580b2102 TH |
4450 | DPRINTK("EXIT\n"); |
4451 | } | |
83c47bcb TH |
4452 | |
4453 | /** | |
4454 | * ata_scsi_user_scan - indication for user-initiated bus scan | |
4455 | * @shost: SCSI host to scan | |
4456 | * @channel: Channel to scan | |
4457 | * @id: ID to scan | |
4458 | * @lun: LUN to scan | |
4459 | * | |
4460 | * This function is called when user explicitly requests bus | |
4461 | * scan. Set probe pending flag and invoke EH. | |
4462 | * | |
4463 | * LOCKING: | |
4464 | * SCSI layer (we don't care) | |
4465 | * | |
4466 | * RETURNS: | |
4467 | * Zero. | |
4468 | */ | |
d9027470 | 4469 | int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, |
9cb78c16 | 4470 | unsigned int id, u64 lun) |
83c47bcb TH |
4471 | { |
4472 | struct ata_port *ap = ata_shost_to_port(shost); | |
4473 | unsigned long flags; | |
41bda9c9 | 4474 | int devno, rc = 0; |
83c47bcb TH |
4475 | |
4476 | if (!ap->ops->error_handler) | |
4477 | return -EOPNOTSUPP; | |
4478 | ||
41bda9c9 | 4479 | if (lun != SCAN_WILD_CARD && lun) |
83c47bcb TH |
4480 | return -EINVAL; |
4481 | ||
071f44b1 | 4482 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
4483 | if (channel != SCAN_WILD_CARD && channel) |
4484 | return -EINVAL; | |
4485 | devno = id; | |
4486 | } else { | |
4487 | if (id != SCAN_WILD_CARD && id) | |
4488 | return -EINVAL; | |
4489 | devno = channel; | |
4490 | } | |
4491 | ||
ba6a1308 | 4492 | spin_lock_irqsave(ap->lock, flags); |
83c47bcb | 4493 | |
41bda9c9 TH |
4494 | if (devno == SCAN_WILD_CARD) { |
4495 | struct ata_link *link; | |
4496 | ||
1eca4365 | 4497 | ata_for_each_link(link, ap, EDGE) { |
41bda9c9 | 4498 | struct ata_eh_info *ehi = &link->eh_info; |
b558eddd | 4499 | ehi->probe_mask |= ATA_ALL_DEVICES; |
cf480626 | 4500 | ehi->action |= ATA_EH_RESET; |
41bda9c9 | 4501 | } |
83c47bcb | 4502 | } else { |
41bda9c9 | 4503 | struct ata_device *dev = ata_find_dev(ap, devno); |
83c47bcb TH |
4504 | |
4505 | if (dev) { | |
41bda9c9 | 4506 | struct ata_eh_info *ehi = &dev->link->eh_info; |
9af5c9c9 | 4507 | ehi->probe_mask |= 1 << dev->devno; |
cf480626 | 4508 | ehi->action |= ATA_EH_RESET; |
83c47bcb TH |
4509 | } else |
4510 | rc = -EINVAL; | |
4511 | } | |
4512 | ||
309afcb5 | 4513 | if (rc == 0) { |
83c47bcb | 4514 | ata_port_schedule_eh(ap); |
309afcb5 TH |
4515 | spin_unlock_irqrestore(ap->lock, flags); |
4516 | ata_port_wait_eh(ap); | |
4517 | } else | |
4518 | spin_unlock_irqrestore(ap->lock, flags); | |
83c47bcb TH |
4519 | |
4520 | return rc; | |
4521 | } | |
3057ac3c | 4522 | |
4523 | /** | |
d0171269 | 4524 | * ata_scsi_dev_rescan - initiate scsi_rescan_device() |
65f27f38 | 4525 | * @work: Pointer to ATA port to perform scsi_rescan_device() |
3057ac3c | 4526 | * |
d0171269 | 4527 | * After ATA pass thru (SAT) commands are executed successfully, |
ad72cf98 | 4528 | * libata need to propagate the changes to SCSI layer. |
3057ac3c | 4529 | * |
d0171269 TH |
4530 | * LOCKING: |
4531 | * Kernel thread context (may sleep). | |
3057ac3c | 4532 | */ |
65f27f38 | 4533 | void ata_scsi_dev_rescan(struct work_struct *work) |
3057ac3c | 4534 | { |
65f27f38 DH |
4535 | struct ata_port *ap = |
4536 | container_of(work, struct ata_port, scsi_rescan_task); | |
41bda9c9 | 4537 | struct ata_link *link; |
f58229f8 | 4538 | struct ata_device *dev; |
f84e7e41 | 4539 | unsigned long flags; |
3057ac3c | 4540 | |
ad72cf98 | 4541 | mutex_lock(&ap->scsi_scan_mutex); |
f84e7e41 TH |
4542 | spin_lock_irqsave(ap->lock, flags); |
4543 | ||
1eca4365 TH |
4544 | ata_for_each_link(link, ap, EDGE) { |
4545 | ata_for_each_dev(dev, link, ENABLED) { | |
41bda9c9 | 4546 | struct scsi_device *sdev = dev->sdev; |
3057ac3c | 4547 | |
1eca4365 | 4548 | if (!sdev) |
41bda9c9 TH |
4549 | continue; |
4550 | if (scsi_device_get(sdev)) | |
4551 | continue; | |
f84e7e41 | 4552 | |
41bda9c9 TH |
4553 | spin_unlock_irqrestore(ap->lock, flags); |
4554 | scsi_rescan_device(&(sdev->sdev_gendev)); | |
4555 | scsi_device_put(sdev); | |
4556 | spin_lock_irqsave(ap->lock, flags); | |
4557 | } | |
3057ac3c | 4558 | } |
f84e7e41 TH |
4559 | |
4560 | spin_unlock_irqrestore(ap->lock, flags); | |
ad72cf98 | 4561 | mutex_unlock(&ap->scsi_scan_mutex); |
3057ac3c | 4562 | } |
80289167 BK |
4563 | |
4564 | /** | |
4565 | * ata_sas_port_alloc - Allocate port for a SAS attached SATA device | |
4f931374 | 4566 | * @host: ATA host container for all SAS ports |
80289167 | 4567 | * @port_info: Information from low-level host driver |
cca3974e | 4568 | * @shost: SCSI host that the scsi device is attached to |
80289167 BK |
4569 | * |
4570 | * LOCKING: | |
4571 | * PCI/etc. bus probe sem. | |
4572 | * | |
4573 | * RETURNS: | |
4574 | * ata_port pointer on success / NULL on failure. | |
4575 | */ | |
4576 | ||
cca3974e | 4577 | struct ata_port *ata_sas_port_alloc(struct ata_host *host, |
80289167 | 4578 | struct ata_port_info *port_info, |
cca3974e | 4579 | struct Scsi_Host *shost) |
80289167 | 4580 | { |
f3187195 | 4581 | struct ata_port *ap; |
80289167 | 4582 | |
f3187195 | 4583 | ap = ata_port_alloc(host); |
80289167 BK |
4584 | if (!ap) |
4585 | return NULL; | |
4586 | ||
f3187195 | 4587 | ap->port_no = 0; |
a29b5dad | 4588 | ap->lock = &host->lock; |
f3187195 TH |
4589 | ap->pio_mask = port_info->pio_mask; |
4590 | ap->mwdma_mask = port_info->mwdma_mask; | |
4591 | ap->udma_mask = port_info->udma_mask; | |
4592 | ap->flags |= port_info->flags; | |
4593 | ap->ops = port_info->port_ops; | |
4594 | ap->cbl = ATA_CBL_SATA; | |
4595 | ||
80289167 BK |
4596 | return ap; |
4597 | } | |
4598 | EXPORT_SYMBOL_GPL(ata_sas_port_alloc); | |
4599 | ||
4600 | /** | |
4601 | * ata_sas_port_start - Set port up for dma. | |
4602 | * @ap: Port to initialize | |
4603 | * | |
4604 | * Called just after data structures for each port are | |
dde20207 | 4605 | * initialized. |
80289167 BK |
4606 | * |
4607 | * May be used as the port_start() entry in ata_port_operations. | |
4608 | * | |
4609 | * LOCKING: | |
4610 | * Inherited from caller. | |
4611 | */ | |
4612 | int ata_sas_port_start(struct ata_port *ap) | |
4613 | { | |
3f1e046a NA |
4614 | /* |
4615 | * the port is marked as frozen at allocation time, but if we don't | |
4616 | * have new eh, we won't thaw it | |
4617 | */ | |
4618 | if (!ap->ops->error_handler) | |
4619 | ap->pflags &= ~ATA_PFLAG_FROZEN; | |
dde20207 | 4620 | return 0; |
80289167 BK |
4621 | } |
4622 | EXPORT_SYMBOL_GPL(ata_sas_port_start); | |
4623 | ||
4624 | /** | |
4625 | * ata_port_stop - Undo ata_sas_port_start() | |
4626 | * @ap: Port to shut down | |
4627 | * | |
80289167 BK |
4628 | * May be used as the port_stop() entry in ata_port_operations. |
4629 | * | |
4630 | * LOCKING: | |
4631 | * Inherited from caller. | |
4632 | */ | |
4633 | ||
4634 | void ata_sas_port_stop(struct ata_port *ap) | |
4635 | { | |
80289167 BK |
4636 | } |
4637 | EXPORT_SYMBOL_GPL(ata_sas_port_stop); | |
4638 | ||
b2024459 DW |
4639 | /** |
4640 | * ata_sas_async_probe - simply schedule probing and return | |
4641 | * @ap: Port to probe | |
4642 | * | |
4643 | * For batch scheduling of probe for sas attached ata devices, assumes | |
4644 | * the port has already been through ata_sas_port_init() | |
4645 | */ | |
4646 | void ata_sas_async_probe(struct ata_port *ap) | |
9508a66f | 4647 | { |
b2024459 DW |
4648 | __ata_port_probe(ap); |
4649 | } | |
4650 | EXPORT_SYMBOL_GPL(ata_sas_async_probe); | |
9508a66f | 4651 | |
b2024459 DW |
4652 | int ata_sas_sync_probe(struct ata_port *ap) |
4653 | { | |
4654 | return ata_port_probe(ap); | |
9508a66f | 4655 | } |
b2024459 DW |
4656 | EXPORT_SYMBOL_GPL(ata_sas_sync_probe); |
4657 | ||
9508a66f | 4658 | |
80289167 BK |
4659 | /** |
4660 | * ata_sas_port_init - Initialize a SATA device | |
4661 | * @ap: SATA port to initialize | |
4662 | * | |
4663 | * LOCKING: | |
4664 | * PCI/etc. bus probe sem. | |
4665 | * | |
4666 | * RETURNS: | |
4667 | * Zero on success, non-zero on error. | |
4668 | */ | |
4669 | ||
4670 | int ata_sas_port_init(struct ata_port *ap) | |
4671 | { | |
4672 | int rc = ap->ops->port_start(ap); | |
4673 | ||
b2024459 DW |
4674 | if (rc) |
4675 | return rc; | |
4676 | ap->print_id = atomic_inc_return(&ata_print_id); | |
4677 | return 0; | |
80289167 BK |
4678 | } |
4679 | EXPORT_SYMBOL_GPL(ata_sas_port_init); | |
4680 | ||
4681 | /** | |
4682 | * ata_sas_port_destroy - Destroy a SATA port allocated by ata_sas_port_alloc | |
4683 | * @ap: SATA port to destroy | |
4684 | * | |
4685 | */ | |
4686 | ||
4687 | void ata_sas_port_destroy(struct ata_port *ap) | |
4688 | { | |
f0d36efd TH |
4689 | if (ap->ops->port_stop) |
4690 | ap->ops->port_stop(ap); | |
80289167 BK |
4691 | kfree(ap); |
4692 | } | |
4693 | EXPORT_SYMBOL_GPL(ata_sas_port_destroy); | |
4694 | ||
4695 | /** | |
4696 | * ata_sas_slave_configure - Default slave_config routine for libata devices | |
4697 | * @sdev: SCSI device to configure | |
4698 | * @ap: ATA port to which SCSI device is attached | |
4699 | * | |
4700 | * RETURNS: | |
4701 | * Zero. | |
4702 | */ | |
4703 | ||
4704 | int ata_sas_slave_configure(struct scsi_device *sdev, struct ata_port *ap) | |
4705 | { | |
4706 | ata_scsi_sdev_config(sdev); | |
9af5c9c9 | 4707 | ata_scsi_dev_config(sdev, ap->link.device); |
80289167 BK |
4708 | return 0; |
4709 | } | |
4710 | EXPORT_SYMBOL_GPL(ata_sas_slave_configure); | |
4711 | ||
4712 | /** | |
4713 | * ata_sas_queuecmd - Issue SCSI cdb to libata-managed device | |
4714 | * @cmd: SCSI command to be sent | |
80289167 BK |
4715 | * @ap: ATA port to which the command is being sent |
4716 | * | |
4717 | * RETURNS: | |
08475a19 BK |
4718 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
4719 | * 0 otherwise. | |
80289167 BK |
4720 | */ |
4721 | ||
b27dcfb0 | 4722 | int ata_sas_queuecmd(struct scsi_cmnd *cmd, struct ata_port *ap) |
80289167 | 4723 | { |
08475a19 BK |
4724 | int rc = 0; |
4725 | ||
80289167 BK |
4726 | ata_scsi_dump_cdb(ap, cmd); |
4727 | ||
2486fa56 | 4728 | if (likely(ata_dev_enabled(ap->link.device))) |
b27dcfb0 | 4729 | rc = __ata_scsi_queuecmd(cmd, ap->link.device); |
80289167 BK |
4730 | else { |
4731 | cmd->result = (DID_BAD_TARGET << 16); | |
b27dcfb0 | 4732 | cmd->scsi_done(cmd); |
80289167 | 4733 | } |
08475a19 | 4734 | return rc; |
80289167 BK |
4735 | } |
4736 | EXPORT_SYMBOL_GPL(ata_sas_queuecmd); | |
98bd4be1 SL |
4737 | |
4738 | int ata_sas_allocate_tag(struct ata_port *ap) | |
4739 | { | |
4740 | unsigned int max_queue = ap->host->n_tags; | |
4741 | unsigned int i, tag; | |
4742 | ||
4743 | for (i = 0, tag = ap->sas_last_tag + 1; i < max_queue; i++, tag++) { | |
3a028243 | 4744 | tag = tag < max_queue ? tag : 0; |
98bd4be1 SL |
4745 | |
4746 | /* the last tag is reserved for internal command. */ | |
4747 | if (tag == ATA_TAG_INTERNAL) | |
4748 | continue; | |
4749 | ||
4750 | if (!test_and_set_bit(tag, &ap->sas_tag_allocated)) { | |
4751 | ap->sas_last_tag = tag; | |
4752 | return tag; | |
4753 | } | |
4754 | } | |
4755 | return -1; | |
4756 | } | |
4757 | ||
4758 | void ata_sas_free_tag(unsigned int tag, struct ata_port *ap) | |
4759 | { | |
4760 | clear_bit(tag, &ap->sas_tag_allocated); | |
4761 | } |