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c82ee6d3 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 | 2 | /* |
af36d7f0 JG |
3 | * libata-scsi.c - helper library for ATA |
4 | * | |
af36d7f0 JG |
5 | * Copyright 2003-2004 Red Hat, Inc. All rights reserved. |
6 | * Copyright 2003-2004 Jeff Garzik | |
7 | * | |
af36d7f0 | 8 | * libata documentation is available via 'make {ps|pdf}docs', |
9bb9a39c | 9 | * as Documentation/driver-api/libata.rst |
af36d7f0 JG |
10 | * |
11 | * Hardware documentation available from | |
12 | * - http://www.t10.org/ | |
13 | * - http://www.t13.org/ | |
1da177e4 LT |
14 | */ |
15 | ||
75c0b0e1 | 16 | #include <linux/compat.h> |
5a0e3ad6 | 17 | #include <linux/slab.h> |
1da177e4 LT |
18 | #include <linux/kernel.h> |
19 | #include <linux/blkdev.h> | |
20 | #include <linux/spinlock.h> | |
38789fda | 21 | #include <linux/export.h> |
1da177e4 | 22 | #include <scsi/scsi.h> |
1da177e4 | 23 | #include <scsi/scsi_host.h> |
beb40487 | 24 | #include <scsi/scsi_cmnd.h> |
85837ebd | 25 | #include <scsi/scsi_eh.h> |
005a5a06 | 26 | #include <scsi/scsi_device.h> |
a6e6ce8e | 27 | #include <scsi/scsi_tcq.h> |
30afc84c | 28 | #include <scsi/scsi_transport.h> |
1da177e4 | 29 | #include <linux/libata.h> |
b095518e | 30 | #include <linux/hdreg.h> |
2dcb407e | 31 | #include <linux/uaccess.h> |
2a6e58d2 | 32 | #include <linux/suspend.h> |
18f0f978 | 33 | #include <asm/unaligned.h> |
8e061784 | 34 | #include <linux/ioprio.h> |
45b8084f | 35 | #include <linux/of.h> |
1da177e4 LT |
36 | |
37 | #include "libata.h" | |
d9027470 | 38 | #include "libata-transport.h" |
1da177e4 | 39 | |
673b2fe6 | 40 | #define ATA_SCSI_RBUF_SIZE 2048 |
87340e98 TH |
41 | |
42 | static DEFINE_SPINLOCK(ata_scsi_rbuf_lock); | |
43 | static u8 ata_scsi_rbuf[ATA_SCSI_RBUF_SIZE]; | |
b095518e | 44 | |
ad706991 | 45 | typedef unsigned int (*ata_xlat_func_t)(struct ata_queued_cmd *qc); |
ab5b3a5b | 46 | |
2dcb407e | 47 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
ab5b3a5b | 48 | const struct scsi_device *scsidev); |
1da177e4 | 49 | |
62e4a60e DLM |
50 | #define RW_RECOVERY_MPAGE 0x1 |
51 | #define RW_RECOVERY_MPAGE_LEN 12 | |
52 | #define CACHE_MPAGE 0x8 | |
53 | #define CACHE_MPAGE_LEN 20 | |
54 | #define CONTROL_MPAGE 0xa | |
55 | #define CONTROL_MPAGE_LEN 12 | |
56 | #define ALL_MPAGES 0x3f | |
57 | #define ALL_SUB_MPAGES 0xff | |
673b2fe6 DLM |
58 | #define CDL_T2A_SUB_MPAGE 0x07 |
59 | #define CDL_T2B_SUB_MPAGE 0x08 | |
60 | #define CDL_T2_SUB_MPAGE_LEN 232 | |
df60f9c6 DLM |
61 | #define ATA_FEATURE_SUB_MPAGE 0xf2 |
62 | #define ATA_FEATURE_SUB_MPAGE_LEN 16 | |
00ac37f5 | 63 | |
24f75686 | 64 | static const u8 def_rw_recovery_mpage[RW_RECOVERY_MPAGE_LEN] = { |
00ac37f5 DG |
65 | RW_RECOVERY_MPAGE, |
66 | RW_RECOVERY_MPAGE_LEN - 2, | |
24f75686 | 67 | (1 << 7), /* AWRE */ |
00ac37f5 DG |
68 | 0, /* read retry count */ |
69 | 0, 0, 0, 0, | |
70 | 0, /* write retry count */ | |
71 | 0, 0, 0 | |
72 | }; | |
73 | ||
74 | static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = { | |
75 | CACHE_MPAGE, | |
76 | CACHE_MPAGE_LEN - 2, | |
77 | 0, /* contains WCE, needs to be 0 for logic */ | |
78 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
79 | 0, /* contains DRA, needs to be 0 for logic */ | |
80 | 0, 0, 0, 0, 0, 0, 0 | |
81 | }; | |
82 | ||
83 | static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = { | |
84 | CONTROL_MPAGE, | |
85 | CONTROL_MPAGE_LEN - 2, | |
86 | 2, /* DSENSE=0, GLTSD=1 */ | |
87 | 0, /* [QAM+QERR may be 1, see 05-359r1] */ | |
88 | 0, 0, 0, 0, 0xff, 0xff, | |
89 | 0, 30 /* extended self test time, see 05-359r1 */ | |
90 | }; | |
91 | ||
45fabbb7 EO |
92 | static ssize_t ata_scsi_park_show(struct device *device, |
93 | struct device_attribute *attr, char *buf) | |
94 | { | |
95 | struct scsi_device *sdev = to_scsi_device(device); | |
96 | struct ata_port *ap; | |
97 | struct ata_link *link; | |
98 | struct ata_device *dev; | |
3948b6f2 | 99 | unsigned long now; |
3f649ab7 | 100 | unsigned int msecs; |
45fabbb7 EO |
101 | int rc = 0; |
102 | ||
103 | ap = ata_shost_to_port(sdev->host); | |
104 | ||
3948b6f2 | 105 | spin_lock_irq(ap->lock); |
45fabbb7 EO |
106 | dev = ata_scsi_find_dev(ap, sdev); |
107 | if (!dev) { | |
108 | rc = -ENODEV; | |
109 | goto unlock; | |
110 | } | |
111 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { | |
112 | rc = -EOPNOTSUPP; | |
113 | goto unlock; | |
114 | } | |
115 | ||
116 | link = dev->link; | |
a464189d | 117 | now = jiffies; |
45fabbb7 EO |
118 | if (ap->pflags & ATA_PFLAG_EH_IN_PROGRESS && |
119 | link->eh_context.unloaded_mask & (1 << dev->devno) && | |
a464189d EO |
120 | time_after(dev->unpark_deadline, now)) |
121 | msecs = jiffies_to_msecs(dev->unpark_deadline - now); | |
45fabbb7 EO |
122 | else |
123 | msecs = 0; | |
124 | ||
125 | unlock: | |
126 | spin_unlock_irq(ap->lock); | |
127 | ||
0667391e | 128 | return rc ? rc : sysfs_emit(buf, "%u\n", msecs); |
45fabbb7 EO |
129 | } |
130 | ||
131 | static ssize_t ata_scsi_park_store(struct device *device, | |
132 | struct device_attribute *attr, | |
133 | const char *buf, size_t len) | |
134 | { | |
135 | struct scsi_device *sdev = to_scsi_device(device); | |
136 | struct ata_port *ap; | |
137 | struct ata_device *dev; | |
8c125363 | 138 | int input; |
45fabbb7 EO |
139 | unsigned long flags; |
140 | int rc; | |
141 | ||
8c125363 | 142 | rc = kstrtoint(buf, 10, &input); |
42b9ab7a JH |
143 | if (rc) |
144 | return rc; | |
145 | if (input < -2) | |
45fabbb7 EO |
146 | return -EINVAL; |
147 | if (input > ATA_TMOUT_MAX_PARK) { | |
148 | rc = -EOVERFLOW; | |
149 | input = ATA_TMOUT_MAX_PARK; | |
150 | } | |
151 | ||
152 | ap = ata_shost_to_port(sdev->host); | |
153 | ||
154 | spin_lock_irqsave(ap->lock, flags); | |
155 | dev = ata_scsi_find_dev(ap, sdev); | |
156 | if (unlikely(!dev)) { | |
157 | rc = -ENODEV; | |
158 | goto unlock; | |
159 | } | |
9162c657 HR |
160 | if (dev->class != ATA_DEV_ATA && |
161 | dev->class != ATA_DEV_ZAC) { | |
45fabbb7 EO |
162 | rc = -EOPNOTSUPP; |
163 | goto unlock; | |
164 | } | |
165 | ||
166 | if (input >= 0) { | |
167 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { | |
168 | rc = -EOPNOTSUPP; | |
169 | goto unlock; | |
170 | } | |
171 | ||
172 | dev->unpark_deadline = ata_deadline(jiffies, input); | |
173 | dev->link->eh_info.dev_action[dev->devno] |= ATA_EH_PARK; | |
174 | ata_port_schedule_eh(ap); | |
175 | complete(&ap->park_req_pending); | |
176 | } else { | |
177 | switch (input) { | |
178 | case -1: | |
179 | dev->flags &= ~ATA_DFLAG_NO_UNLOAD; | |
180 | break; | |
181 | case -2: | |
182 | dev->flags |= ATA_DFLAG_NO_UNLOAD; | |
183 | break; | |
184 | } | |
185 | } | |
186 | unlock: | |
187 | spin_unlock_irqrestore(ap->lock, flags); | |
188 | ||
189 | return rc ? rc : len; | |
190 | } | |
191 | DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR, | |
192 | ata_scsi_park_show, ata_scsi_park_store); | |
193 | EXPORT_SYMBOL_GPL(dev_attr_unload_heads); | |
194 | ||
4b89ad8e NC |
195 | bool ata_scsi_sense_is_valid(u8 sk, u8 asc, u8 ascq) |
196 | { | |
197 | /* | |
198 | * If sk == NO_SENSE, and asc + ascq == NO ADDITIONAL SENSE INFORMATION, | |
199 | * then there is no sense data to add. | |
200 | */ | |
201 | if (sk == 0 && asc == 0 && ascq == 0) | |
202 | return false; | |
203 | ||
204 | /* If sk > COMPLETED, sense data is bogus. */ | |
205 | if (sk > COMPLETED) | |
206 | return false; | |
207 | ||
208 | return true; | |
209 | } | |
210 | ||
06dbde5f HR |
211 | void ata_scsi_set_sense(struct ata_device *dev, struct scsi_cmnd *cmd, |
212 | u8 sk, u8 asc, u8 ascq) | |
f0761be3 | 213 | { |
06dbde5f HR |
214 | bool d_sense = (dev->flags & ATA_DFLAG_D_SENSE); |
215 | ||
f2b1e9c6 | 216 | scsi_build_sense(cmd, d_sense, sk, asc, ascq); |
f0761be3 TH |
217 | } |
218 | ||
492bf621 HR |
219 | void ata_scsi_set_sense_information(struct ata_device *dev, |
220 | struct scsi_cmnd *cmd, | |
221 | const struct ata_taskfile *tf) | |
222 | { | |
223 | u64 information; | |
224 | ||
492bf621 HR |
225 | information = ata_tf_read_block(tf, dev); |
226 | if (information == U64_MAX) | |
227 | return; | |
228 | ||
229 | scsi_set_sense_information(cmd->sense_buffer, | |
230 | SCSI_SENSE_BUFFERSIZE, information); | |
231 | } | |
232 | ||
bcfc867d | 233 | static void ata_scsi_set_invalid_field(struct ata_device *dev, |
0df10b84 | 234 | struct scsi_cmnd *cmd, u16 field, u8 bit) |
bcfc867d HR |
235 | { |
236 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x24, 0x0); | |
8554e5e1 | 237 | /* "Invalid field in CDB" */ |
bcfc867d | 238 | scsi_set_sense_field_pointer(cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE, |
0df10b84 | 239 | field, bit, 1); |
bcfc867d HR |
240 | } |
241 | ||
7780081c HR |
242 | static void ata_scsi_set_invalid_parameter(struct ata_device *dev, |
243 | struct scsi_cmnd *cmd, u16 field) | |
244 | { | |
245 | /* "Invalid field in parameter list" */ | |
246 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x26, 0x0); | |
247 | scsi_set_sense_field_pointer(cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE, | |
248 | field, 0xff, 0); | |
f0761be3 TH |
249 | } |
250 | ||
c3f69c7f BVA |
251 | static struct attribute *ata_common_sdev_attrs[] = { |
252 | &dev_attr_unload_heads.attr, | |
45fabbb7 EO |
253 | NULL |
254 | }; | |
c3f69c7f BVA |
255 | |
256 | static const struct attribute_group ata_common_sdev_attr_group = { | |
257 | .attrs = ata_common_sdev_attrs | |
258 | }; | |
259 | ||
260 | const struct attribute_group *ata_common_sdev_groups[] = { | |
261 | &ata_common_sdev_attr_group, | |
262 | NULL | |
263 | }; | |
264 | EXPORT_SYMBOL_GPL(ata_common_sdev_groups); | |
45fabbb7 | 265 | |
1da177e4 LT |
266 | /** |
267 | * ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd. | |
268 | * @sdev: SCSI device for which BIOS geometry is to be determined | |
269 | * @bdev: block device associated with @sdev | |
270 | * @capacity: capacity of SCSI device | |
271 | * @geom: location to which geometry will be output | |
272 | * | |
273 | * Generic bios head/sector/cylinder calculator | |
274 | * used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS) | |
275 | * mapping. Some situations may arise where the disk is not | |
276 | * bootable if this is not used. | |
277 | * | |
278 | * LOCKING: | |
279 | * Defined by the SCSI layer. We don't really care. | |
280 | * | |
281 | * RETURNS: | |
282 | * Zero. | |
283 | */ | |
284 | int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, | |
285 | sector_t capacity, int geom[]) | |
286 | { | |
287 | geom[0] = 255; | |
288 | geom[1] = 63; | |
289 | sector_div(capacity, 255*63); | |
290 | geom[2] = capacity; | |
291 | ||
292 | return 0; | |
293 | } | |
a52fbcfc | 294 | EXPORT_SYMBOL_GPL(ata_std_bios_param); |
1da177e4 | 295 | |
d8d9129e TH |
296 | /** |
297 | * ata_scsi_unlock_native_capacity - unlock native capacity | |
298 | * @sdev: SCSI device to adjust device capacity for | |
299 | * | |
300 | * This function is called if a partition on @sdev extends beyond | |
301 | * the end of the device. It requests EH to unlock HPA. | |
302 | * | |
303 | * LOCKING: | |
304 | * Defined by the SCSI layer. Might sleep. | |
305 | */ | |
306 | void ata_scsi_unlock_native_capacity(struct scsi_device *sdev) | |
307 | { | |
308 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
309 | struct ata_device *dev; | |
310 | unsigned long flags; | |
311 | ||
312 | spin_lock_irqsave(ap->lock, flags); | |
313 | ||
314 | dev = ata_scsi_find_dev(ap, sdev); | |
315 | if (dev && dev->n_sectors < dev->n_native_sectors) { | |
316 | dev->flags |= ATA_DFLAG_UNLOCK_HPA; | |
317 | dev->link->eh_info.action |= ATA_EH_RESET; | |
318 | ata_port_schedule_eh(ap); | |
319 | } | |
320 | ||
321 | spin_unlock_irqrestore(ap->lock, flags); | |
322 | ata_port_wait_eh(ap); | |
323 | } | |
a52fbcfc | 324 | EXPORT_SYMBOL_GPL(ata_scsi_unlock_native_capacity); |
d8d9129e | 325 | |
5924b74c TH |
326 | /** |
327 | * ata_get_identity - Handler for HDIO_GET_IDENTITY ioctl | |
5eb66fe0 | 328 | * @ap: target port |
5924b74c TH |
329 | * @sdev: SCSI device to get identify data for |
330 | * @arg: User buffer area for identify data | |
331 | * | |
332 | * LOCKING: | |
333 | * Defined by the SCSI layer. We don't really care. | |
334 | * | |
335 | * RETURNS: | |
336 | * Zero on success, negative errno on error. | |
337 | */ | |
94be9a58 JG |
338 | static int ata_get_identity(struct ata_port *ap, struct scsi_device *sdev, |
339 | void __user *arg) | |
5924b74c | 340 | { |
5924b74c TH |
341 | struct ata_device *dev = ata_scsi_find_dev(ap, sdev); |
342 | u16 __user *dst = arg; | |
343 | char buf[40]; | |
344 | ||
345 | if (!dev) | |
346 | return -ENOMSG; | |
347 | ||
348 | if (copy_to_user(dst, dev->id, ATA_ID_WORDS * sizeof(u16))) | |
349 | return -EFAULT; | |
350 | ||
351 | ata_id_string(dev->id, buf, ATA_ID_PROD, ATA_ID_PROD_LEN); | |
352 | if (copy_to_user(dst + ATA_ID_PROD, buf, ATA_ID_PROD_LEN)) | |
353 | return -EFAULT; | |
354 | ||
355 | ata_id_string(dev->id, buf, ATA_ID_FW_REV, ATA_ID_FW_REV_LEN); | |
356 | if (copy_to_user(dst + ATA_ID_FW_REV, buf, ATA_ID_FW_REV_LEN)) | |
357 | return -EFAULT; | |
358 | ||
359 | ata_id_string(dev->id, buf, ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
360 | if (copy_to_user(dst + ATA_ID_SERNO, buf, ATA_ID_SERNO_LEN)) | |
361 | return -EFAULT; | |
362 | ||
363 | return 0; | |
364 | } | |
365 | ||
b095518e JG |
366 | /** |
367 | * ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl | |
8e8b77dd | 368 | * @scsidev: Device to which we are issuing command |
b095518e JG |
369 | * @arg: User provided data for issuing command |
370 | * | |
371 | * LOCKING: | |
372 | * Defined by the SCSI layer. We don't really care. | |
373 | * | |
374 | * RETURNS: | |
375 | * Zero on success, negative errno on error. | |
376 | */ | |
b095518e JG |
377 | int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg) |
378 | { | |
379 | int rc = 0; | |
429296cc | 380 | u8 sensebuf[SCSI_SENSE_BUFFERSIZE]; |
b095518e | 381 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
429296cc | 382 | u8 args[4], *argbuf = NULL; |
b095518e | 383 | int argsize = 0; |
76aaf87b | 384 | struct scsi_sense_hdr sshdr; |
5fa7b072 MC |
385 | const struct scsi_exec_args exec_args = { |
386 | .sshdr = &sshdr, | |
387 | .sense = sensebuf, | |
388 | .sense_len = sizeof(sensebuf), | |
389 | }; | |
bbe1fe7e | 390 | int cmd_result; |
b095518e | 391 | |
c893a3ae | 392 | if (arg == NULL) |
b095518e JG |
393 | return -EINVAL; |
394 | ||
395 | if (copy_from_user(args, arg, sizeof(args))) | |
396 | return -EFAULT; | |
397 | ||
429296cc | 398 | memset(sensebuf, 0, sizeof(sensebuf)); |
b095518e JG |
399 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
400 | ||
401 | if (args[3]) { | |
295124dc | 402 | argsize = ATA_SECT_SIZE * args[3]; |
b095518e | 403 | argbuf = kmalloc(argsize, GFP_KERNEL); |
54dac83c JR |
404 | if (argbuf == NULL) { |
405 | rc = -ENOMEM; | |
406 | goto error; | |
407 | } | |
b095518e JG |
408 | |
409 | scsi_cmd[1] = (4 << 1); /* PIO Data-in */ | |
410 | scsi_cmd[2] = 0x0e; /* no off.line or cc, read from dev, | |
2dcb407e | 411 | block count in sector count field */ |
b095518e JG |
412 | } else { |
413 | scsi_cmd[1] = (3 << 1); /* Non-data */ | |
bbe1fe7e | 414 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
b095518e JG |
415 | } |
416 | ||
417 | scsi_cmd[0] = ATA_16; | |
418 | ||
419 | scsi_cmd[4] = args[2]; | |
a4f19040 | 420 | if (args[0] == ATA_CMD_SMART) { /* hack -- ide driver does this too */ |
b095518e JG |
421 | scsi_cmd[6] = args[3]; |
422 | scsi_cmd[8] = args[1]; | |
f355eece LW |
423 | scsi_cmd[10] = ATA_SMART_LBAM_PASS; |
424 | scsi_cmd[12] = ATA_SMART_LBAH_PASS; | |
b095518e JG |
425 | } else { |
426 | scsi_cmd[6] = args[1]; | |
427 | } | |
428 | scsi_cmd[14] = args[0]; | |
429 | ||
430 | /* Good values for timeout and retries? Values below | |
431 | from scsi_ioctl_send_command() for default case... */ | |
5fa7b072 MC |
432 | cmd_result = scsi_execute_cmd(scsidev, scsi_cmd, REQ_OP_DRV_IN, argbuf, |
433 | argsize, 10 * HZ, 5, &exec_args); | |
ced202f7 HR |
434 | if (cmd_result < 0) { |
435 | rc = cmd_result; | |
436 | goto error; | |
437 | } | |
464a00c9 | 438 | if (scsi_sense_valid(&sshdr)) {/* sense data available */ |
bbe1fe7e | 439 | u8 *desc = sensebuf + 8; |
bbe1fe7e ET |
440 | |
441 | /* If we set cc then ATA pass-through will cause a | |
442 | * check condition even if no error. Filter that. */ | |
464a00c9 | 443 | if (scsi_status_is_check_condition(cmd_result)) { |
6d3bfc7b KM |
444 | if (sshdr.sense_key == RECOVERED_ERROR && |
445 | sshdr.asc == 0 && sshdr.ascq == 0x1d) | |
bbe1fe7e ET |
446 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
447 | } | |
448 | ||
449 | /* Send userspace a few ATA registers (same as drivers/ide) */ | |
2dcb407e JG |
450 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ |
451 | desc[0] == 0x09) { /* code is "ATA Descriptor" */ | |
452 | args[0] = desc[13]; /* status */ | |
453 | args[1] = desc[3]; /* error */ | |
454 | args[2] = desc[5]; /* sector count (0:7) */ | |
bbe1fe7e ET |
455 | if (copy_to_user(arg, args, sizeof(args))) |
456 | rc = -EFAULT; | |
457 | } | |
458 | } | |
459 | ||
460 | ||
461 | if (cmd_result) { | |
b095518e JG |
462 | rc = -EIO; |
463 | goto error; | |
464 | } | |
465 | ||
b095518e | 466 | if ((argbuf) |
c893a3ae | 467 | && copy_to_user(arg + sizeof(args), argbuf, argsize)) |
b095518e JG |
468 | rc = -EFAULT; |
469 | error: | |
8f760780 | 470 | kfree(argbuf); |
b095518e JG |
471 | return rc; |
472 | } | |
473 | ||
474 | /** | |
475 | * ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl | |
8e8b77dd | 476 | * @scsidev: Device to which we are issuing command |
b095518e JG |
477 | * @arg: User provided data for issuing command |
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 | */ | |
485 | int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) | |
486 | { | |
487 | int rc = 0; | |
429296cc | 488 | u8 sensebuf[SCSI_SENSE_BUFFERSIZE]; |
b095518e | 489 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
429296cc | 490 | u8 args[7]; |
76aaf87b | 491 | struct scsi_sense_hdr sshdr; |
af068bd1 | 492 | int cmd_result; |
5fa7b072 MC |
493 | const struct scsi_exec_args exec_args = { |
494 | .sshdr = &sshdr, | |
495 | .sense = sensebuf, | |
496 | .sense_len = sizeof(sensebuf), | |
497 | }; | |
b095518e | 498 | |
c893a3ae | 499 | if (arg == NULL) |
b095518e JG |
500 | return -EINVAL; |
501 | ||
502 | if (copy_from_user(args, arg, sizeof(args))) | |
503 | return -EFAULT; | |
504 | ||
429296cc | 505 | memset(sensebuf, 0, sizeof(sensebuf)); |
b095518e JG |
506 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
507 | scsi_cmd[0] = ATA_16; | |
508 | scsi_cmd[1] = (3 << 1); /* Non-data */ | |
af068bd1 | 509 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
b095518e JG |
510 | scsi_cmd[4] = args[1]; |
511 | scsi_cmd[6] = args[2]; | |
512 | scsi_cmd[8] = args[3]; | |
513 | scsi_cmd[10] = args[4]; | |
514 | scsi_cmd[12] = args[5]; | |
277239f2 | 515 | scsi_cmd[13] = args[6] & 0x4f; |
b095518e JG |
516 | scsi_cmd[14] = args[0]; |
517 | ||
b095518e | 518 | /* Good values for timeout and retries? Values below |
2e9edbf8 | 519 | from scsi_ioctl_send_command() for default case... */ |
5fa7b072 MC |
520 | cmd_result = scsi_execute_cmd(scsidev, scsi_cmd, REQ_OP_DRV_IN, NULL, |
521 | 0, 10 * HZ, 5, &exec_args); | |
ced202f7 HR |
522 | if (cmd_result < 0) { |
523 | rc = cmd_result; | |
524 | goto error; | |
525 | } | |
464a00c9 | 526 | if (scsi_sense_valid(&sshdr)) {/* sense data available */ |
af068bd1 | 527 | u8 *desc = sensebuf + 8; |
af068bd1 DM |
528 | |
529 | /* If we set cc then ATA pass-through will cause a | |
530 | * check condition even if no error. Filter that. */ | |
531 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { | |
6d3bfc7b KM |
532 | if (sshdr.sense_key == RECOVERED_ERROR && |
533 | sshdr.asc == 0 && sshdr.ascq == 0x1d) | |
af068bd1 DM |
534 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
535 | } | |
536 | ||
537 | /* Send userspace ATA registers */ | |
538 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ | |
539 | desc[0] == 0x09) {/* code is "ATA Descriptor" */ | |
540 | args[0] = desc[13]; /* status */ | |
541 | args[1] = desc[3]; /* error */ | |
542 | args[2] = desc[5]; /* sector count (0:7) */ | |
543 | args[3] = desc[7]; /* lbal */ | |
544 | args[4] = desc[9]; /* lbam */ | |
545 | args[5] = desc[11]; /* lbah */ | |
546 | args[6] = desc[12]; /* select */ | |
547 | if (copy_to_user(arg, args, sizeof(args))) | |
548 | rc = -EFAULT; | |
549 | } | |
550 | } | |
551 | ||
552 | if (cmd_result) { | |
b095518e | 553 | rc = -EIO; |
af068bd1 DM |
554 | goto error; |
555 | } | |
b095518e | 556 | |
af068bd1 | 557 | error: |
b095518e JG |
558 | return rc; |
559 | } | |
560 | ||
0184898d | 561 | static bool ata_ioc32(struct ata_port *ap) |
e3cf95dd AC |
562 | { |
563 | if (ap->flags & ATA_FLAG_PIO_DMA) | |
0184898d | 564 | return true; |
e3cf95dd | 565 | if (ap->pflags & ATA_PFLAG_PIO32) |
0184898d SS |
566 | return true; |
567 | return false; | |
e3cf95dd AC |
568 | } |
569 | ||
75c0b0e1 AB |
570 | /* |
571 | * This handles both native and compat commands, so anything added | |
572 | * here must have a compatible argument, or check in_compat_syscall() | |
573 | */ | |
94be9a58 | 574 | int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev, |
6f4e626f | 575 | unsigned int cmd, void __user *arg) |
1da177e4 | 576 | { |
287e6611 AB |
577 | unsigned long val; |
578 | int rc = -EINVAL; | |
e3cf95dd | 579 | unsigned long flags; |
1da177e4 | 580 | |
1da177e4 | 581 | switch (cmd) { |
287e6611 | 582 | case HDIO_GET_32BIT: |
e3cf95dd AC |
583 | spin_lock_irqsave(ap->lock, flags); |
584 | val = ata_ioc32(ap); | |
585 | spin_unlock_irqrestore(ap->lock, flags); | |
75c0b0e1 AB |
586 | #ifdef CONFIG_COMPAT |
587 | if (in_compat_syscall()) | |
588 | return put_user(val, (compat_ulong_t __user *)arg); | |
589 | #endif | |
287e6611 | 590 | return put_user(val, (unsigned long __user *)arg); |
1da177e4 | 591 | |
287e6611 | 592 | case HDIO_SET_32BIT: |
1da177e4 | 593 | val = (unsigned long) arg; |
e3cf95dd AC |
594 | rc = 0; |
595 | spin_lock_irqsave(ap->lock, flags); | |
596 | if (ap->pflags & ATA_PFLAG_PIO32CHANGE) { | |
597 | if (val) | |
598 | ap->pflags |= ATA_PFLAG_PIO32; | |
599 | else | |
600 | ap->pflags &= ~ATA_PFLAG_PIO32; | |
601 | } else { | |
602 | if (val != ata_ioc32(ap)) | |
603 | rc = -EINVAL; | |
604 | } | |
605 | spin_unlock_irqrestore(ap->lock, flags); | |
606 | return rc; | |
1da177e4 | 607 | |
5924b74c | 608 | case HDIO_GET_IDENTITY: |
94be9a58 | 609 | return ata_get_identity(ap, scsidev, arg); |
5924b74c | 610 | |
b095518e JG |
611 | case HDIO_DRIVE_CMD: |
612 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
613 | return -EACCES; | |
614 | return ata_cmd_ioctl(scsidev, arg); | |
615 | ||
616 | case HDIO_DRIVE_TASK: | |
617 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
618 | return -EACCES; | |
619 | return ata_task_ioctl(scsidev, arg); | |
620 | ||
1da177e4 LT |
621 | default: |
622 | rc = -ENOTTY; | |
623 | break; | |
624 | } | |
625 | ||
1da177e4 LT |
626 | return rc; |
627 | } | |
94be9a58 JG |
628 | EXPORT_SYMBOL_GPL(ata_sas_scsi_ioctl); |
629 | ||
6f4e626f NC |
630 | int ata_scsi_ioctl(struct scsi_device *scsidev, unsigned int cmd, |
631 | void __user *arg) | |
94be9a58 JG |
632 | { |
633 | return ata_sas_scsi_ioctl(ata_shost_to_port(scsidev->host), | |
634 | scsidev, cmd, arg); | |
635 | } | |
636 | EXPORT_SYMBOL_GPL(ata_scsi_ioctl); | |
1da177e4 LT |
637 | |
638 | /** | |
639 | * ata_scsi_qc_new - acquire new ata_queued_cmd reference | |
1da177e4 LT |
640 | * @dev: ATA device to which the new command is attached |
641 | * @cmd: SCSI command that originated this ATA command | |
1da177e4 LT |
642 | * |
643 | * Obtain a reference to an unused ata_queued_cmd structure, | |
644 | * which is the basic libata structure representing a single | |
645 | * ATA command sent to the hardware. | |
646 | * | |
647 | * If a command was available, fill in the SCSI-specific | |
648 | * portions of the structure with information on the | |
649 | * current command. | |
650 | * | |
651 | * LOCKING: | |
cca3974e | 652 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
653 | * |
654 | * RETURNS: | |
655 | * Command allocated, or %NULL if none available. | |
656 | */ | |
7102d230 | 657 | static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev, |
b27dcfb0 | 658 | struct scsi_cmnd *cmd) |
1da177e4 | 659 | { |
4f1a22ee | 660 | struct ata_port *ap = dev->link->ap; |
1da177e4 | 661 | struct ata_queued_cmd *qc; |
4f1a22ee JG |
662 | int tag; |
663 | ||
4cb7c6f1 | 664 | if (unlikely(ata_port_is_frozen(ap))) |
4f1a22ee JG |
665 | goto fail; |
666 | ||
667 | if (ap->flags & ATA_FLAG_SAS_HOST) { | |
668 | /* | |
669 | * SAS hosts may queue > ATA_MAX_QUEUE commands so use | |
670 | * unique per-device budget token as a tag. | |
671 | */ | |
672 | if (WARN_ON_ONCE(cmd->budget_token >= ATA_MAX_QUEUE)) | |
673 | goto fail; | |
674 | tag = cmd->budget_token; | |
675 | } else { | |
676 | tag = scsi_cmd_to_rq(cmd)->tag; | |
677 | } | |
1da177e4 | 678 | |
4f1a22ee JG |
679 | qc = __ata_qc_from_tag(ap, tag); |
680 | qc->tag = qc->hw_tag = tag; | |
681 | qc->ap = ap; | |
682 | qc->dev = dev; | |
1da177e4 | 683 | |
4f1a22ee | 684 | ata_qc_reinit(qc); |
7eb49509 | 685 | |
4f1a22ee JG |
686 | qc->scsicmd = cmd; |
687 | qc->scsidone = scsi_done; | |
688 | ||
689 | qc->sg = scsi_sglist(cmd); | |
690 | qc->n_elem = scsi_sg_count(cmd); | |
691 | ||
692 | if (scsi_cmd_to_rq(cmd)->rq_flags & RQF_QUIET) | |
693 | qc->flags |= ATA_QCFLAG_QUIET; | |
1da177e4 LT |
694 | |
695 | return qc; | |
4f1a22ee JG |
696 | |
697 | fail: | |
698 | set_host_byte(cmd, DID_OK); | |
699 | set_status_byte(cmd, SAM_STAT_TASK_SET_FULL); | |
700 | scsi_done(cmd); | |
701 | return NULL; | |
1da177e4 LT |
702 | } |
703 | ||
aacda375 TH |
704 | static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc) |
705 | { | |
706 | struct scsi_cmnd *scmd = qc->scsicmd; | |
707 | ||
bdf8710d | 708 | qc->extrabytes = scmd->extra_len; |
aacda375 TH |
709 | qc->nbytes = scsi_bufflen(scmd) + qc->extrabytes; |
710 | } | |
711 | ||
1da177e4 LT |
712 | /** |
713 | * ata_to_sense_error - convert ATA error to SCSI error | |
8e8b77dd | 714 | * @id: ATA device number |
1da177e4 | 715 | * @drv_stat: value contained in ATA status register |
b095518e JG |
716 | * @drv_err: value contained in ATA error register |
717 | * @sk: the sense key we'll fill out | |
718 | * @asc: the additional sense code we'll fill out | |
719 | * @ascq: the additional sense code qualifier we'll fill out | |
1da177e4 | 720 | * |
b095518e JG |
721 | * Converts an ATA error into a SCSI error. Fill out pointers to |
722 | * SK, ASC, and ASCQ bytes for later use in fixed or descriptor | |
723 | * format sense blocks. | |
1da177e4 LT |
724 | * |
725 | * LOCKING: | |
cca3974e | 726 | * spin_lock_irqsave(host lock) |
1da177e4 | 727 | */ |
7102d230 | 728 | static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, |
ff8072d5 | 729 | u8 *asc, u8 *ascq) |
1da177e4 | 730 | { |
b095518e | 731 | int i; |
ffe75ef6 | 732 | |
1da177e4 | 733 | /* Based on the 3ware driver translation table */ |
98ac62de | 734 | static const unsigned char sense_table[][4] = { |
1da177e4 | 735 | /* BBD|ECC|ID|MAR */ |
8ae72044 HR |
736 | {0xd1, ABORTED_COMMAND, 0x00, 0x00}, |
737 | // Device busy Aborted command | |
1da177e4 | 738 | /* BBD|ECC|ID */ |
8ae72044 HR |
739 | {0xd0, ABORTED_COMMAND, 0x00, 0x00}, |
740 | // Device busy Aborted command | |
1da177e4 | 741 | /* ECC|MC|MARK */ |
8ae72044 HR |
742 | {0x61, HARDWARE_ERROR, 0x00, 0x00}, |
743 | // Device fault Hardware error | |
1da177e4 | 744 | /* ICRC|ABRT */ /* NB: ICRC & !ABRT is BBD */ |
8ae72044 HR |
745 | {0x84, ABORTED_COMMAND, 0x47, 0x00}, |
746 | // Data CRC error SCSI parity error | |
1da177e4 | 747 | /* MC|ID|ABRT|TRK0|MARK */ |
8ae72044 HR |
748 | {0x37, NOT_READY, 0x04, 0x00}, |
749 | // Unit offline Not ready | |
1da177e4 | 750 | /* MCR|MARK */ |
8ae72044 HR |
751 | {0x09, NOT_READY, 0x04, 0x00}, |
752 | // Unrecovered disk error Not ready | |
1da177e4 | 753 | /* Bad address mark */ |
8ae72044 HR |
754 | {0x01, MEDIUM_ERROR, 0x13, 0x00}, |
755 | // Address mark not found for data field | |
756 | /* TRK0 - Track 0 not found */ | |
757 | {0x02, HARDWARE_ERROR, 0x00, 0x00}, | |
758 | // Hardware error | |
78062c50 | 759 | /* Abort: 0x04 is not translated here, see below */ |
1da177e4 | 760 | /* Media change request */ |
8ae72044 HR |
761 | {0x08, NOT_READY, 0x04, 0x00}, |
762 | // FIXME: faking offline | |
763 | /* SRV/IDNF - ID not found */ | |
764 | {0x10, ILLEGAL_REQUEST, 0x21, 0x00}, | |
765 | // Logical address out of range | |
766 | /* MC - Media Changed */ | |
767 | {0x20, UNIT_ATTENTION, 0x28, 0x00}, | |
768 | // Not ready to ready change, medium may have changed | |
769 | /* ECC - Uncorrectable ECC error */ | |
770 | {0x40, MEDIUM_ERROR, 0x11, 0x04}, | |
771 | // Unrecovered read error | |
1da177e4 | 772 | /* BBD - block marked bad */ |
8ae72044 HR |
773 | {0x80, MEDIUM_ERROR, 0x11, 0x04}, |
774 | // Block marked bad Medium error, unrecovered read error | |
1da177e4 LT |
775 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
776 | }; | |
98ac62de | 777 | static const unsigned char stat_table[][4] = { |
1da177e4 | 778 | /* Must be first because BUSY means no other bits valid */ |
8ae72044 HR |
779 | {0x80, ABORTED_COMMAND, 0x47, 0x00}, |
780 | // Busy, fake parity for now | |
781 | {0x40, ILLEGAL_REQUEST, 0x21, 0x04}, | |
782 | // Device ready, unaligned write command | |
783 | {0x20, HARDWARE_ERROR, 0x44, 0x00}, | |
784 | // Device fault, internal target failure | |
785 | {0x08, ABORTED_COMMAND, 0x47, 0x00}, | |
786 | // Timed out in xfer, fake parity for now | |
787 | {0x04, RECOVERED_ERROR, 0x11, 0x00}, | |
788 | // Recovered ECC error Medium error, recovered | |
1da177e4 LT |
789 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
790 | }; | |
1da177e4 | 791 | |
1da177e4 LT |
792 | /* |
793 | * Is this an error we can process/parse | |
794 | */ | |
b095518e JG |
795 | if (drv_stat & ATA_BUSY) { |
796 | drv_err = 0; /* Ignore the err bits, they're invalid */ | |
1da177e4 | 797 | } |
b095518e JG |
798 | |
799 | if (drv_err) { | |
800 | /* Look for drv_err */ | |
801 | for (i = 0; sense_table[i][0] != 0xFF; i++) { | |
802 | /* Look for best matches first */ | |
2e9edbf8 | 803 | if ((sense_table[i][0] & drv_err) == |
b095518e JG |
804 | sense_table[i][0]) { |
805 | *sk = sense_table[i][1]; | |
806 | *asc = sense_table[i][2]; | |
807 | *ascq = sense_table[i][3]; | |
ff8072d5 | 808 | return; |
b095518e JG |
809 | } |
810 | } | |
1da177e4 | 811 | } |
b095518e | 812 | |
78062c50 GG |
813 | /* |
814 | * Fall back to interpreting status bits. Note that if the drv_err | |
815 | * has only the ABRT bit set, we decode drv_stat. ABRT by itself | |
816 | * is not descriptive enough. | |
817 | */ | |
b095518e JG |
818 | for (i = 0; stat_table[i][0] != 0xFF; i++) { |
819 | if (stat_table[i][0] & drv_stat) { | |
820 | *sk = stat_table[i][1]; | |
821 | *asc = stat_table[i][2]; | |
822 | *ascq = stat_table[i][3]; | |
ff8072d5 | 823 | return; |
1da177e4 | 824 | } |
b095518e | 825 | } |
b095518e | 826 | |
78062c50 GG |
827 | /* |
828 | * We need a sensible error return here, which is tricky, and one | |
829 | * that won't cause people to do things like return a disk wrongly. | |
830 | */ | |
2d202024 AC |
831 | *sk = ABORTED_COMMAND; |
832 | *asc = 0x00; | |
833 | *ascq = 0x00; | |
b095518e JG |
834 | } |
835 | ||
836 | /* | |
750426aa | 837 | * ata_gen_passthru_sense - Generate check condition sense block. |
b095518e JG |
838 | * @qc: Command that completed. |
839 | * | |
840 | * This function is specific to the ATA descriptor format sense | |
841 | * block specified for the ATA pass through commands. Regardless | |
842 | * of whether the command errored or not, return a sense | |
843 | * block. Copy all controller registers into the sense | |
84a9a8cd GG |
844 | * block. If there was no error, we get the request from an ATA |
845 | * passthrough command, so we use the following sense data: | |
846 | * sk = RECOVERED ERROR | |
847 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE | |
848 | * | |
b095518e JG |
849 | * |
850 | * LOCKING: | |
750426aa | 851 | * None. |
b095518e | 852 | */ |
750426aa | 853 | static void ata_gen_passthru_sense(struct ata_queued_cmd *qc) |
b095518e JG |
854 | { |
855 | struct scsi_cmnd *cmd = qc->scsicmd; | |
e61e0672 | 856 | struct ata_taskfile *tf = &qc->result_tf; |
b095518e JG |
857 | unsigned char *sb = cmd->sense_buffer; |
858 | unsigned char *desc = sb + 8; | |
b525e773 | 859 | u8 sense_key, asc, ascq; |
b095518e JG |
860 | |
861 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); | |
862 | ||
b095518e JG |
863 | /* |
864 | * Use ata_to_sense_error() to map status register bits | |
865 | * onto sense key, asc & ascq. | |
866 | */ | |
058e55e1 | 867 | if (qc->err_mask || |
efcef265 SS |
868 | tf->status & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
869 | ata_to_sense_error(qc->ap->print_id, tf->status, tf->error, | |
ff8072d5 | 870 | &sense_key, &asc, &ascq); |
06dbde5f | 871 | ata_scsi_set_sense(qc->dev, cmd, sense_key, asc, ascq); |
84a9a8cd | 872 | } else { |
11093cb1 HR |
873 | /* |
874 | * ATA PASS-THROUGH INFORMATION AVAILABLE | |
875 | * Always in descriptor format sense. | |
876 | */ | |
f2b1e9c6 | 877 | scsi_build_sense(cmd, 1, RECOVERED_ERROR, 0, 0x1D); |
1da177e4 LT |
878 | } |
879 | ||
11093cb1 HR |
880 | if ((cmd->sense_buffer[0] & 0x7f) >= 0x72) { |
881 | u8 len; | |
882 | ||
883 | /* descriptor format */ | |
884 | len = sb[7]; | |
885 | desc = (char *)scsi_sense_desc_find(sb, len + 8, 9); | |
886 | if (!desc) { | |
887 | if (SCSI_SENSE_BUFFERSIZE < len + 14) | |
888 | return; | |
889 | sb[7] = len + 14; | |
890 | desc = sb + 8 + len; | |
891 | } | |
892 | desc[0] = 9; | |
893 | desc[1] = 12; | |
894 | /* | |
895 | * Copy registers into sense buffer. | |
896 | */ | |
897 | desc[2] = 0x00; | |
efcef265 | 898 | desc[3] = tf->error; |
11093cb1 HR |
899 | desc[5] = tf->nsect; |
900 | desc[7] = tf->lbal; | |
901 | desc[9] = tf->lbam; | |
902 | desc[11] = tf->lbah; | |
903 | desc[12] = tf->device; | |
efcef265 | 904 | desc[13] = tf->status; |
b095518e | 905 | |
11093cb1 HR |
906 | /* |
907 | * Fill in Extend bit, and the high order bytes | |
908 | * if applicable. | |
909 | */ | |
910 | if (tf->flags & ATA_TFLAG_LBA48) { | |
911 | desc[2] |= 0x01; | |
912 | desc[4] = tf->hob_nsect; | |
913 | desc[6] = tf->hob_lbal; | |
914 | desc[8] = tf->hob_lbam; | |
915 | desc[10] = tf->hob_lbah; | |
916 | } | |
917 | } else { | |
918 | /* Fixed sense format */ | |
efcef265 SS |
919 | desc[0] = tf->error; |
920 | desc[1] = tf->status; | |
11093cb1 HR |
921 | desc[2] = tf->device; |
922 | desc[3] = tf->nsect; | |
e0029dcb | 923 | desc[7] = 0; |
11093cb1 HR |
924 | if (tf->flags & ATA_TFLAG_LBA48) { |
925 | desc[8] |= 0x80; | |
926 | if (tf->hob_nsect) | |
927 | desc[8] |= 0x40; | |
928 | if (tf->hob_lbal || tf->hob_lbam || tf->hob_lbah) | |
929 | desc[8] |= 0x20; | |
930 | } | |
931 | desc[9] = tf->lbal; | |
932 | desc[10] = tf->lbam; | |
933 | desc[11] = tf->lbah; | |
1da177e4 | 934 | } |
b095518e | 935 | } |
1da177e4 | 936 | |
b095518e | 937 | /** |
750426aa | 938 | * ata_gen_ata_sense - generate a SCSI fixed sense block |
b095518e JG |
939 | * @qc: Command that we are erroring out |
940 | * | |
d25614ba | 941 | * Generate sense block for a failed ATA command @qc. Descriptor |
25985edc | 942 | * format is used to accommodate LBA48 block address. |
b095518e JG |
943 | * |
944 | * LOCKING: | |
750426aa | 945 | * None. |
b095518e | 946 | */ |
750426aa | 947 | static void ata_gen_ata_sense(struct ata_queued_cmd *qc) |
b095518e | 948 | { |
d25614ba | 949 | struct ata_device *dev = qc->dev; |
b095518e | 950 | struct scsi_cmnd *cmd = qc->scsicmd; |
e61e0672 | 951 | struct ata_taskfile *tf = &qc->result_tf; |
b095518e | 952 | unsigned char *sb = cmd->sense_buffer; |
d25614ba | 953 | u64 block; |
b525e773 | 954 | u8 sense_key, asc, ascq; |
b095518e JG |
955 | |
956 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); | |
957 | ||
59f68474 HR |
958 | if (ata_dev_disabled(dev)) { |
959 | /* Device disabled after error recovery */ | |
960 | /* LOGICAL UNIT NOT READY, HARD RESET REQUIRED */ | |
961 | ata_scsi_set_sense(dev, cmd, NOT_READY, 0x04, 0x21); | |
962 | return; | |
963 | } | |
d25614ba | 964 | /* Use ata_to_sense_error() to map status register bits |
b095518e JG |
965 | * onto sense key, asc & ascq. |
966 | */ | |
058e55e1 | 967 | if (qc->err_mask || |
efcef265 SS |
968 | tf->status & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
969 | ata_to_sense_error(qc->ap->print_id, tf->status, tf->error, | |
ff8072d5 | 970 | &sense_key, &asc, &ascq); |
06dbde5f | 971 | ata_scsi_set_sense(dev, cmd, sense_key, asc, ascq); |
5e6acd1c HR |
972 | } else { |
973 | /* Could not decode error */ | |
974 | ata_dev_warn(dev, "could not decode error status 0x%x err_mask 0x%x\n", | |
efcef265 | 975 | tf->status, qc->err_mask); |
06dbde5f | 976 | ata_scsi_set_sense(dev, cmd, ABORTED_COMMAND, 0, 0); |
5e6acd1c | 977 | return; |
1da177e4 | 978 | } |
1da177e4 | 979 | |
d25614ba | 980 | block = ata_tf_read_block(&qc->result_tf, dev); |
cffd1ee9 HR |
981 | if (block == U64_MAX) |
982 | return; | |
a7dac447 | 983 | |
cf8b49b0 | 984 | scsi_set_sense_information(sb, SCSI_SENSE_BUFFERSIZE, block); |
1da177e4 LT |
985 | } |
986 | ||
15964ff7 | 987 | void ata_scsi_sdev_config(struct scsi_device *sdev) |
a6cce2a7 BK |
988 | { |
989 | sdev->use_10_for_rw = 1; | |
990 | sdev->use_10_for_ms = 1; | |
e185934f | 991 | sdev->no_write_same = 1; |
31cc23b3 TH |
992 | |
993 | /* Schedule policy is determined by ->qc_defer() callback and | |
994 | * it needs to see every deferred qc. Set dev_blocked to 1 to | |
995 | * prevent SCSI midlayer from automatically deferring | |
996 | * requests. | |
997 | */ | |
998 | sdev->max_device_blocked = 1; | |
a6cce2a7 BK |
999 | } |
1000 | ||
fa2fc7f4 | 1001 | /** |
94bd5719 | 1002 | * ata_scsi_dma_need_drain - Check whether data transfer may overflow |
73fd8b6d | 1003 | * @rq: request to be checked |
fa2fc7f4 JB |
1004 | * |
1005 | * ATAPI commands which transfer variable length data to host | |
c9b5560a | 1006 | * might overflow due to application error or hardware bug. This |
fa2fc7f4 JB |
1007 | * function checks whether overflow should be drained and ignored |
1008 | * for @request. | |
1009 | * | |
1010 | * LOCKING: | |
1011 | * None. | |
1012 | * | |
1013 | * RETURNS: | |
1014 | * 1 if ; otherwise, 0. | |
1015 | */ | |
cc97923a | 1016 | bool ata_scsi_dma_need_drain(struct request *rq) |
fa2fc7f4 | 1017 | { |
ce70fd9a CH |
1018 | struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq); |
1019 | ||
1020 | return atapi_cmd_type(scmd->cmnd[0]) == ATAPI_MISC; | |
fa2fc7f4 | 1021 | } |
cc97923a | 1022 | EXPORT_SYMBOL_GPL(ata_scsi_dma_need_drain); |
fa2fc7f4 | 1023 | |
15964ff7 | 1024 | int ata_scsi_dev_config(struct scsi_device *sdev, struct ata_device *dev) |
a6cce2a7 | 1025 | { |
900e599e | 1026 | struct request_queue *q = sdev->request_queue; |
6a8438de | 1027 | int depth = 1; |
900e599e | 1028 | |
45fabbb7 EO |
1029 | if (!ata_id_has_unload(dev->id)) |
1030 | dev->flags |= ATA_DFLAG_NO_UNLOAD; | |
1031 | ||
914ed354 | 1032 | /* configure max sectors */ |
0568e612 | 1033 | dev->max_sectors = min(dev->max_sectors, sdev->host->max_sectors); |
900e599e | 1034 | blk_queue_max_hw_sectors(q, dev->max_sectors); |
a6cce2a7 | 1035 | |
fa2fc7f4 | 1036 | if (dev->class == ATA_DEV_ATAPI) { |
729a6a30 TH |
1037 | sdev->sector_size = ATA_SECT_SIZE; |
1038 | ||
1039 | /* set DMA padding */ | |
900e599e | 1040 | blk_queue_update_dma_pad(q, ATA_DMA_PAD_SZ - 1); |
fa2fc7f4 | 1041 | |
cc97923a CH |
1042 | /* make room for appending the drain */ |
1043 | blk_queue_max_segments(q, queue_max_segments(q) - 1); | |
1044 | ||
1045 | sdev->dma_drain_len = ATAPI_MAX_DRAIN; | |
ce288e05 | 1046 | sdev->dma_drain_buf = kmalloc(sdev->dma_drain_len, GFP_NOIO); |
cc97923a | 1047 | if (!sdev->dma_drain_buf) { |
a9a79dfe | 1048 | ata_dev_err(dev, "drain buffer allocation failed\n"); |
fa2fc7f4 JB |
1049 | return -ENOMEM; |
1050 | } | |
fa2fc7f4 | 1051 | } else { |
295124dc | 1052 | sdev->sector_size = ata_id_logical_sector_size(dev->id); |
aa3998db | 1053 | |
0a858905 | 1054 | /* |
aa3998db | 1055 | * Ask the sd driver to issue START STOP UNIT on runtime suspend |
24eca2dc DLM |
1056 | * and resume and shutdown only. For system level suspend/resume, |
1057 | * devices power state is handled directly by libata EH. | |
b09d7f8f DLM |
1058 | * Given that disks are always spun up on system resume, also |
1059 | * make sure that the sd driver forces runtime suspended disks | |
1060 | * to be resumed to correctly reflect the power state of the | |
1061 | * device. | |
0a858905 | 1062 | */ |
6371be7a DLM |
1063 | sdev->manage_runtime_start_stop = 1; |
1064 | sdev->manage_shutdown = 1; | |
b09d7f8f | 1065 | sdev->force_runtime_start_on_system_start = 1; |
dde20207 | 1066 | } |
d8cf5389 | 1067 | |
729a6a30 TH |
1068 | /* |
1069 | * ata_pio_sectors() expects buffer for each sector to not cross | |
1070 | * page boundary. Enforce it by requiring buffers to be sector | |
1071 | * aligned, which works iff sector_size is not larger than | |
1072 | * PAGE_SIZE. ATAPI devices also need the alignment as | |
1073 | * IDENTIFY_PACKET is executed as ATA_PROT_PIO. | |
1074 | */ | |
1075 | if (sdev->sector_size > PAGE_SIZE) | |
a9a79dfe | 1076 | ata_dev_warn(dev, |
729a6a30 TH |
1077 | "sector_size=%u > PAGE_SIZE, PIO may malfunction\n", |
1078 | sdev->sector_size); | |
1079 | ||
900e599e | 1080 | blk_queue_update_dma_alignment(q, sdev->sector_size - 1); |
729a6a30 | 1081 | |
f26792d5 JG |
1082 | if (dev->flags & ATA_DFLAG_AN) |
1083 | set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events); | |
1084 | ||
43cff7d9 | 1085 | if (ata_ncq_supported(dev)) |
a6e6ce8e | 1086 | depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id)); |
6a8438de DLM |
1087 | depth = min(ATA_MAX_QUEUE, depth); |
1088 | scsi_change_queue_depth(sdev, depth); | |
fa2fc7f4 | 1089 | |
d80210f2 CH |
1090 | if (dev->flags & ATA_DFLAG_TRUSTED) |
1091 | sdev->security_supported = 1; | |
1092 | ||
295124dc | 1093 | dev->sdev = sdev; |
fa2fc7f4 | 1094 | return 0; |
a6cce2a7 BK |
1095 | } |
1096 | ||
fb99ef17 DLM |
1097 | /** |
1098 | * ata_scsi_slave_alloc - Early setup of SCSI device | |
1099 | * @sdev: SCSI device to examine | |
1100 | * | |
1101 | * This is called from scsi_alloc_sdev() when the scsi device | |
1102 | * associated with an ATA device is scanned on a port. | |
1103 | * | |
1104 | * LOCKING: | |
1105 | * Defined by SCSI layer. We don't really care. | |
1106 | */ | |
1107 | ||
1108 | int ata_scsi_slave_alloc(struct scsi_device *sdev) | |
1109 | { | |
1110 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
1111 | struct device_link *link; | |
1112 | ||
1113 | ata_scsi_sdev_config(sdev); | |
1114 | ||
1115 | /* | |
1116 | * Create a link from the ata_port device to the scsi device to ensure | |
1117 | * that PM does suspend/resume in the correct order: the scsi device is | |
1118 | * consumer (child) and the ata port the supplier (parent). | |
1119 | */ | |
1120 | link = device_link_add(&sdev->sdev_gendev, &ap->tdev, | |
1121 | DL_FLAG_STATELESS | | |
1122 | DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE); | |
1123 | if (!link) { | |
1124 | ata_port_err(ap, "Failed to create link to scsi device %s\n", | |
1125 | dev_name(&sdev->sdev_gendev)); | |
1126 | return -ENODEV; | |
1127 | } | |
1128 | ||
1129 | return 0; | |
1130 | } | |
1131 | EXPORT_SYMBOL_GPL(ata_scsi_slave_alloc); | |
1132 | ||
1da177e4 LT |
1133 | /** |
1134 | * ata_scsi_slave_config - Set SCSI device attributes | |
1135 | * @sdev: SCSI device to examine | |
1136 | * | |
1137 | * This is called before we actually start reading | |
1138 | * and writing to the device, to configure certain | |
1139 | * SCSI mid-layer behaviors. | |
1140 | * | |
1141 | * LOCKING: | |
1142 | * Defined by SCSI layer. We don't really care. | |
1143 | */ | |
1144 | ||
1145 | int ata_scsi_slave_config(struct scsi_device *sdev) | |
1146 | { | |
31534363 TH |
1147 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
1148 | struct ata_device *dev = __ata_scsi_find_dev(ap, sdev); | |
1da177e4 | 1149 | |
31534363 | 1150 | if (dev) |
fb99ef17 | 1151 | return ata_scsi_dev_config(sdev, dev); |
1da177e4 | 1152 | |
fb99ef17 | 1153 | return 0; |
1da177e4 | 1154 | } |
a52fbcfc | 1155 | EXPORT_SYMBOL_GPL(ata_scsi_slave_config); |
1da177e4 | 1156 | |
83c47bcb TH |
1157 | /** |
1158 | * ata_scsi_slave_destroy - SCSI device is about to be destroyed | |
1159 | * @sdev: SCSI device to be destroyed | |
1160 | * | |
1161 | * @sdev is about to be destroyed for hot/warm unplugging. If | |
1162 | * this unplugging was initiated by libata as indicated by NULL | |
1163 | * dev->sdev, this function doesn't have to do anything. | |
1164 | * Otherwise, SCSI layer initiated warm-unplug is in progress. | |
1165 | * Clear dev->sdev, schedule the device for ATA detach and invoke | |
1166 | * EH. | |
1167 | * | |
1168 | * LOCKING: | |
1169 | * Defined by SCSI layer. We don't really care. | |
1170 | */ | |
1171 | void ata_scsi_slave_destroy(struct scsi_device *sdev) | |
1172 | { | |
1173 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
1174 | unsigned long flags; | |
1175 | struct ata_device *dev; | |
1176 | ||
fb99ef17 DLM |
1177 | device_link_remove(&sdev->sdev_gendev, &ap->tdev); |
1178 | ||
ba6a1308 | 1179 | spin_lock_irqsave(ap->lock, flags); |
83c47bcb TH |
1180 | dev = __ata_scsi_find_dev(ap, sdev); |
1181 | if (dev && dev->sdev) { | |
1182 | /* SCSI device already in CANCEL state, no need to offline it */ | |
1183 | dev->sdev = NULL; | |
1184 | dev->flags |= ATA_DFLAG_DETACH; | |
1185 | ata_port_schedule_eh(ap); | |
1186 | } | |
ba6a1308 | 1187 | spin_unlock_irqrestore(ap->lock, flags); |
fa2fc7f4 | 1188 | |
cc97923a | 1189 | kfree(sdev->dma_drain_buf); |
83c47bcb | 1190 | } |
a52fbcfc | 1191 | EXPORT_SYMBOL_GPL(ata_scsi_slave_destroy); |
83c47bcb | 1192 | |
972dcafb DG |
1193 | /** |
1194 | * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command | |
1195 | * @qc: Storage for translated ATA taskfile | |
972dcafb DG |
1196 | * |
1197 | * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY | |
1198 | * (to start). Perhaps these commands should be preceded by | |
1199 | * CHECK POWER MODE to see what power mode the device is already in. | |
1200 | * [See SAT revision 5 at www.t10.org] | |
1201 | * | |
1202 | * LOCKING: | |
cca3974e | 1203 | * spin_lock_irqsave(host lock) |
972dcafb DG |
1204 | * |
1205 | * RETURNS: | |
1206 | * Zero on success, non-zero on error. | |
1207 | */ | |
ad706991 | 1208 | static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc) |
972dcafb | 1209 | { |
542b1444 | 1210 | struct scsi_cmnd *scmd = qc->scsicmd; |
ad706991 | 1211 | const u8 *cdb = scmd->cmnd; |
bcfc867d | 1212 | u16 fp; |
0df10b84 | 1213 | u8 bp = 0xff; |
972dcafb | 1214 | |
bcfc867d HR |
1215 | if (scmd->cmd_len < 5) { |
1216 | fp = 4; | |
2e5704f6 | 1217 | goto invalid_fld; |
bcfc867d | 1218 | } |
2e5704f6 | 1219 | |
8c1f0817 | 1220 | /* LOEJ bit set not supported */ |
bcfc867d HR |
1221 | if (cdb[4] & 0x2) { |
1222 | fp = 4; | |
0df10b84 | 1223 | bp = 1; |
8c1f0817 | 1224 | goto invalid_fld; |
bcfc867d | 1225 | } |
8c1f0817 DLM |
1226 | |
1227 | /* Power conditions not supported */ | |
bcfc867d HR |
1228 | if (((cdb[4] >> 4) & 0xf) != 0) { |
1229 | fp = 4; | |
0df10b84 | 1230 | bp = 3; |
8c1f0817 | 1231 | goto invalid_fld; |
bcfc867d | 1232 | } |
e31e8531 | 1233 | |
8c1f0817 DLM |
1234 | /* Ignore IMMED bit (cdb[1] & 0x1), violates sat-r05 */ |
1235 | if (!ata_dev_power_init_tf(qc->dev, &qc->tf, cdb[4] & 0x1)) { | |
1236 | ata_scsi_set_sense(qc->dev, scmd, ABORTED_COMMAND, 0, 0); | |
1237 | return 1; | |
920a4b10 | 1238 | } |
78981a7c | 1239 | |
972dcafb DG |
1240 | /* |
1241 | * Standby and Idle condition timers could be implemented but that | |
1242 | * would require libata to implement the Power condition mode page | |
1243 | * and allow the user to change it. Changing mode pages requires | |
1244 | * MODE SELECT to be implemented. | |
1245 | */ | |
1246 | ||
1247 | return 0; | |
ae006510 | 1248 | |
2a6e58d2 | 1249 | invalid_fld: |
0df10b84 | 1250 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); |
ae006510 | 1251 | return 1; |
972dcafb DG |
1252 | } |
1253 | ||
1da177e4 LT |
1254 | /** |
1255 | * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command | |
1256 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1257 | * |
1258 | * Sets up an ATA taskfile to issue FLUSH CACHE or | |
1259 | * FLUSH CACHE EXT. | |
1260 | * | |
1261 | * LOCKING: | |
cca3974e | 1262 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1263 | * |
1264 | * RETURNS: | |
1265 | * Zero on success, non-zero on error. | |
1266 | */ | |
ad706991 | 1267 | static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc) |
1da177e4 LT |
1268 | { |
1269 | struct ata_taskfile *tf = &qc->tf; | |
1270 | ||
1271 | tf->flags |= ATA_TFLAG_DEVICE; | |
1272 | tf->protocol = ATA_PROT_NODATA; | |
1273 | ||
6fc49adb | 1274 | if (qc->dev->flags & ATA_DFLAG_FLUSH_EXT) |
1da177e4 LT |
1275 | tf->command = ATA_CMD_FLUSH_EXT; |
1276 | else | |
1277 | tf->command = ATA_CMD_FLUSH; | |
1278 | ||
b666da35 TH |
1279 | /* flush is critical for IO integrity, consider it an IO command */ |
1280 | qc->flags |= ATA_QCFLAG_IO; | |
1281 | ||
1da177e4 LT |
1282 | return 0; |
1283 | } | |
1284 | ||
3aef5231 AL |
1285 | /** |
1286 | * scsi_6_lba_len - Get LBA and transfer length | |
542b1444 | 1287 | * @cdb: SCSI command to translate |
3aef5231 AL |
1288 | * |
1289 | * Calculate LBA and transfer length for 6-byte commands. | |
1290 | * | |
1291 | * RETURNS: | |
1292 | * @plba: the LBA | |
1293 | * @plen: the transfer length | |
1294 | */ | |
542b1444 | 1295 | static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 AL |
1296 | { |
1297 | u64 lba = 0; | |
6c7b7d2b | 1298 | u32 len; |
3aef5231 | 1299 | |
6c7b7d2b | 1300 | lba |= ((u64)(cdb[1] & 0x1f)) << 16; |
542b1444 TH |
1301 | lba |= ((u64)cdb[2]) << 8; |
1302 | lba |= ((u64)cdb[3]); | |
3aef5231 | 1303 | |
6c7b7d2b | 1304 | len = cdb[4]; |
3aef5231 AL |
1305 | |
1306 | *plba = lba; | |
1307 | *plen = len; | |
1308 | } | |
1309 | ||
1310 | /** | |
1311 | * scsi_10_lba_len - Get LBA and transfer length | |
542b1444 | 1312 | * @cdb: SCSI command to translate |
3aef5231 AL |
1313 | * |
1314 | * Calculate LBA and transfer length for 10-byte commands. | |
1315 | * | |
1316 | * RETURNS: | |
1317 | * @plba: the LBA | |
1318 | * @plen: the transfer length | |
1319 | */ | |
6e163f9b | 1320 | static inline void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 | 1321 | { |
6e163f9b DLM |
1322 | *plba = get_unaligned_be32(&cdb[2]); |
1323 | *plen = get_unaligned_be16(&cdb[7]); | |
3aef5231 AL |
1324 | } |
1325 | ||
1326 | /** | |
1327 | * scsi_16_lba_len - Get LBA and transfer length | |
542b1444 | 1328 | * @cdb: SCSI command to translate |
3aef5231 AL |
1329 | * |
1330 | * Calculate LBA and transfer length for 16-byte commands. | |
1331 | * | |
1332 | * RETURNS: | |
1333 | * @plba: the LBA | |
1334 | * @plen: the transfer length | |
1335 | */ | |
6e163f9b | 1336 | static inline void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 | 1337 | { |
6e163f9b DLM |
1338 | *plba = get_unaligned_be64(&cdb[2]); |
1339 | *plen = get_unaligned_be32(&cdb[10]); | |
3aef5231 AL |
1340 | } |
1341 | ||
eafe804b DLM |
1342 | /** |
1343 | * scsi_dld - Get duration limit descriptor index | |
1344 | * @cdb: SCSI command to translate | |
1345 | * | |
1346 | * Returns the dld bits indicating the index of a command duration limit | |
1347 | * descriptor. | |
1348 | */ | |
1349 | static inline int scsi_dld(const u8 *cdb) | |
1350 | { | |
1351 | return ((cdb[1] & 0x01) << 2) | ((cdb[14] >> 6) & 0x03); | |
1352 | } | |
1353 | ||
1da177e4 LT |
1354 | /** |
1355 | * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one | |
1356 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1357 | * |
1358 | * Converts SCSI VERIFY command to an ATA READ VERIFY command. | |
1359 | * | |
1360 | * LOCKING: | |
cca3974e | 1361 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1362 | * |
1363 | * RETURNS: | |
1364 | * Zero on success, non-zero on error. | |
1365 | */ | |
ad706991 | 1366 | static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 1367 | { |
542b1444 | 1368 | struct scsi_cmnd *scmd = qc->scsicmd; |
1da177e4 | 1369 | struct ata_taskfile *tf = &qc->tf; |
8bf62ece | 1370 | struct ata_device *dev = qc->dev; |
1da177e4 | 1371 | u64 dev_sectors = qc->dev->n_sectors; |
ad706991 | 1372 | const u8 *cdb = scmd->cmnd; |
3aef5231 AL |
1373 | u64 block; |
1374 | u32 n_block; | |
bcfc867d | 1375 | u16 fp; |
1da177e4 LT |
1376 | |
1377 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
1378 | tf->protocol = ATA_PROT_NODATA; | |
1da177e4 | 1379 | |
59b00404 SS |
1380 | switch (cdb[0]) { |
1381 | case VERIFY: | |
bcfc867d HR |
1382 | if (scmd->cmd_len < 10) { |
1383 | fp = 9; | |
2e5704f6 | 1384 | goto invalid_fld; |
bcfc867d | 1385 | } |
542b1444 | 1386 | scsi_10_lba_len(cdb, &block, &n_block); |
59b00404 SS |
1387 | break; |
1388 | case VERIFY_16: | |
bcfc867d HR |
1389 | if (scmd->cmd_len < 16) { |
1390 | fp = 15; | |
2e5704f6 | 1391 | goto invalid_fld; |
bcfc867d | 1392 | } |
542b1444 | 1393 | scsi_16_lba_len(cdb, &block, &n_block); |
59b00404 SS |
1394 | break; |
1395 | default: | |
bcfc867d | 1396 | fp = 0; |
ae006510 | 1397 | goto invalid_fld; |
bcfc867d | 1398 | } |
1da177e4 | 1399 | |
8bf62ece | 1400 | if (!n_block) |
ae006510 | 1401 | goto nothing_to_do; |
8bf62ece | 1402 | if (block >= dev_sectors) |
ae006510 | 1403 | goto out_of_range; |
8bf62ece | 1404 | if ((block + n_block) > dev_sectors) |
ae006510 | 1405 | goto out_of_range; |
1da177e4 | 1406 | |
07506697 AL |
1407 | if (dev->flags & ATA_DFLAG_LBA) { |
1408 | tf->flags |= ATA_TFLAG_LBA; | |
1409 | ||
c6a33e24 AL |
1410 | if (lba_28_ok(block, n_block)) { |
1411 | /* use LBA28 */ | |
1412 | tf->command = ATA_CMD_VERIFY; | |
1413 | tf->device |= (block >> 24) & 0xf; | |
1414 | } else if (lba_48_ok(block, n_block)) { | |
1415 | if (!(dev->flags & ATA_DFLAG_LBA48)) | |
1416 | goto out_of_range; | |
07506697 AL |
1417 | |
1418 | /* use LBA48 */ | |
1419 | tf->flags |= ATA_TFLAG_LBA48; | |
8bf62ece | 1420 | tf->command = ATA_CMD_VERIFY_EXT; |
1da177e4 | 1421 | |
8bf62ece | 1422 | tf->hob_nsect = (n_block >> 8) & 0xff; |
1da177e4 | 1423 | |
8bf62ece AL |
1424 | tf->hob_lbah = (block >> 40) & 0xff; |
1425 | tf->hob_lbam = (block >> 32) & 0xff; | |
1426 | tf->hob_lbal = (block >> 24) & 0xff; | |
c6a33e24 AL |
1427 | } else |
1428 | /* request too large even for LBA48 */ | |
1429 | goto out_of_range; | |
8bf62ece AL |
1430 | |
1431 | tf->nsect = n_block & 0xff; | |
1da177e4 | 1432 | |
8bf62ece AL |
1433 | tf->lbah = (block >> 16) & 0xff; |
1434 | tf->lbam = (block >> 8) & 0xff; | |
1435 | tf->lbal = block & 0xff; | |
1da177e4 | 1436 | |
8bf62ece AL |
1437 | tf->device |= ATA_LBA; |
1438 | } else { | |
1439 | /* CHS */ | |
1440 | u32 sect, head, cyl, track; | |
1441 | ||
c6a33e24 AL |
1442 | if (!lba_28_ok(block, n_block)) |
1443 | goto out_of_range; | |
07506697 | 1444 | |
8bf62ece AL |
1445 | /* Convert LBA to CHS */ |
1446 | track = (u32)block / dev->sectors; | |
1447 | cyl = track / dev->heads; | |
1448 | head = track % dev->heads; | |
1449 | sect = (u32)block % dev->sectors + 1; | |
1450 | ||
2e9edbf8 JG |
1451 | /* Check whether the converted CHS can fit. |
1452 | Cylinder: 0-65535 | |
8bf62ece AL |
1453 | Head: 0-15 |
1454 | Sector: 1-255*/ | |
2e9edbf8 | 1455 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
ae006510 | 1456 | goto out_of_range; |
2e9edbf8 | 1457 | |
8bf62ece AL |
1458 | tf->command = ATA_CMD_VERIFY; |
1459 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ | |
1460 | tf->lbal = sect; | |
1461 | tf->lbam = cyl; | |
1462 | tf->lbah = cyl >> 8; | |
1463 | tf->device |= head; | |
1464 | } | |
1da177e4 LT |
1465 | |
1466 | return 0; | |
ae006510 DG |
1467 | |
1468 | invalid_fld: | |
0df10b84 | 1469 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
ae006510 DG |
1470 | return 1; |
1471 | ||
1472 | out_of_range: | |
06dbde5f | 1473 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
ae006510 DG |
1474 | /* "Logical Block Address out of range" */ |
1475 | return 1; | |
1476 | ||
1477 | nothing_to_do: | |
542b1444 | 1478 | scmd->result = SAM_STAT_GOOD; |
ae006510 | 1479 | return 1; |
1da177e4 LT |
1480 | } |
1481 | ||
2d727150 JA |
1482 | static bool ata_check_nblocks(struct scsi_cmnd *scmd, u32 n_blocks) |
1483 | { | |
c8329cd5 | 1484 | struct request *rq = scsi_cmd_to_rq(scmd); |
2d727150 JA |
1485 | u32 req_blocks; |
1486 | ||
1487 | if (!blk_rq_is_passthrough(rq)) | |
1488 | return true; | |
1489 | ||
1490 | req_blocks = blk_rq_bytes(rq) / scmd->device->sector_size; | |
1491 | if (n_blocks > req_blocks) | |
1492 | return false; | |
1493 | ||
1494 | return true; | |
1495 | } | |
1496 | ||
1da177e4 LT |
1497 | /** |
1498 | * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one | |
1499 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1500 | * |
1501 | * Converts any of six SCSI read/write commands into the | |
1502 | * ATA counterpart, including starting sector (LBA), | |
1503 | * sector count, and taking into account the device's LBA48 | |
1504 | * support. | |
1505 | * | |
1506 | * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and | |
1507 | * %WRITE_16 are currently supported. | |
1508 | * | |
1509 | * LOCKING: | |
cca3974e | 1510 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1511 | * |
1512 | * RETURNS: | |
1513 | * Zero on success, non-zero on error. | |
1514 | */ | |
ad706991 | 1515 | static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 1516 | { |
542b1444 | 1517 | struct scsi_cmnd *scmd = qc->scsicmd; |
ad706991 | 1518 | const u8 *cdb = scmd->cmnd; |
c8329cd5 | 1519 | struct request *rq = scsi_cmd_to_rq(scmd); |
8e061784 | 1520 | int class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq)); |
bd056d7e | 1521 | unsigned int tf_flags = 0; |
eafe804b | 1522 | int dld = 0; |
3aef5231 AL |
1523 | u64 block; |
1524 | u32 n_block; | |
bd056d7e | 1525 | int rc; |
bcfc867d | 1526 | u16 fp = 0; |
1da177e4 | 1527 | |
59b00404 SS |
1528 | switch (cdb[0]) { |
1529 | case WRITE_6: | |
1530 | case WRITE_10: | |
1531 | case WRITE_16: | |
bd056d7e | 1532 | tf_flags |= ATA_TFLAG_WRITE; |
59b00404 SS |
1533 | break; |
1534 | } | |
1da177e4 | 1535 | |
9a3dccc4 | 1536 | /* Calculate the SCSI LBA, transfer length and FUA. */ |
542b1444 | 1537 | switch (cdb[0]) { |
3aef5231 AL |
1538 | case READ_10: |
1539 | case WRITE_10: | |
bcfc867d HR |
1540 | if (unlikely(scmd->cmd_len < 10)) { |
1541 | fp = 9; | |
2e5704f6 | 1542 | goto invalid_fld; |
bcfc867d | 1543 | } |
542b1444 | 1544 | scsi_10_lba_len(cdb, &block, &n_block); |
3e451a49 | 1545 | if (cdb[1] & (1 << 3)) |
bd056d7e | 1546 | tf_flags |= ATA_TFLAG_FUA; |
2d727150 JA |
1547 | if (!ata_check_nblocks(scmd, n_block)) |
1548 | goto invalid_fld; | |
3aef5231 AL |
1549 | break; |
1550 | case READ_6: | |
1551 | case WRITE_6: | |
bcfc867d HR |
1552 | if (unlikely(scmd->cmd_len < 6)) { |
1553 | fp = 5; | |
2e5704f6 | 1554 | goto invalid_fld; |
bcfc867d | 1555 | } |
542b1444 | 1556 | scsi_6_lba_len(cdb, &block, &n_block); |
c187c4b5 AL |
1557 | |
1558 | /* for 6-byte r/w commands, transfer length 0 | |
1559 | * means 256 blocks of data, not 0 block. | |
1560 | */ | |
76b2bf9b JG |
1561 | if (!n_block) |
1562 | n_block = 256; | |
2d727150 JA |
1563 | if (!ata_check_nblocks(scmd, n_block)) |
1564 | goto invalid_fld; | |
3aef5231 AL |
1565 | break; |
1566 | case READ_16: | |
1567 | case WRITE_16: | |
bcfc867d HR |
1568 | if (unlikely(scmd->cmd_len < 16)) { |
1569 | fp = 15; | |
2e5704f6 | 1570 | goto invalid_fld; |
bcfc867d | 1571 | } |
542b1444 | 1572 | scsi_16_lba_len(cdb, &block, &n_block); |
eafe804b | 1573 | dld = scsi_dld(cdb); |
3e451a49 | 1574 | if (cdb[1] & (1 << 3)) |
bd056d7e | 1575 | tf_flags |= ATA_TFLAG_FUA; |
2d727150 JA |
1576 | if (!ata_check_nblocks(scmd, n_block)) |
1577 | goto invalid_fld; | |
3aef5231 AL |
1578 | break; |
1579 | default: | |
bcfc867d | 1580 | fp = 0; |
ae006510 | 1581 | goto invalid_fld; |
1da177e4 LT |
1582 | } |
1583 | ||
8bf62ece AL |
1584 | /* Check and compose ATA command */ |
1585 | if (!n_block) | |
c187c4b5 AL |
1586 | /* For 10-byte and 16-byte SCSI R/W commands, transfer |
1587 | * length 0 means transfer 0 block of data. | |
1588 | * However, for ATA R/W commands, sector count 0 means | |
1589 | * 256 or 65536 sectors, not 0 sectors as in SCSI. | |
f51750d5 AC |
1590 | * |
1591 | * WARNING: one or two older ATA drives treat 0 as 0... | |
c187c4b5 | 1592 | */ |
ae006510 | 1593 | goto nothing_to_do; |
1da177e4 | 1594 | |
bd056d7e | 1595 | qc->flags |= ATA_QCFLAG_IO; |
295124dc | 1596 | qc->nbytes = n_block * scmd->device->sector_size; |
1da177e4 | 1597 | |
eafe804b | 1598 | rc = ata_build_rw_tf(qc, block, n_block, tf_flags, dld, class); |
bd056d7e TH |
1599 | if (likely(rc == 0)) |
1600 | return 0; | |
ae006510 | 1601 | |
bd056d7e TH |
1602 | if (rc == -ERANGE) |
1603 | goto out_of_range; | |
1604 | /* treat all other errors as -EINVAL, fall through */ | |
ae006510 | 1605 | invalid_fld: |
0df10b84 | 1606 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
ae006510 DG |
1607 | return 1; |
1608 | ||
1609 | out_of_range: | |
06dbde5f | 1610 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
ae006510 DG |
1611 | /* "Logical Block Address out of range" */ |
1612 | return 1; | |
1613 | ||
1614 | nothing_to_do: | |
542b1444 | 1615 | scmd->result = SAM_STAT_GOOD; |
ae006510 | 1616 | return 1; |
1da177e4 LT |
1617 | } |
1618 | ||
2aa8f5d6 CH |
1619 | static void ata_qc_done(struct ata_queued_cmd *qc) |
1620 | { | |
1621 | struct scsi_cmnd *cmd = qc->scsicmd; | |
1622 | void (*done)(struct scsi_cmnd *) = qc->scsidone; | |
1623 | ||
1624 | ata_qc_free(qc); | |
1625 | done(cmd); | |
1626 | } | |
1627 | ||
77853bf2 | 1628 | static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) |
1da177e4 LT |
1629 | { |
1630 | struct scsi_cmnd *cmd = qc->scsicmd; | |
a7dac447 | 1631 | u8 *cdb = cmd->cmnd; |
7574a837 NC |
1632 | int need_sense = (qc->err_mask != 0) && |
1633 | !(qc->flags & ATA_QCFLAG_SENSE_VALID); | |
b095518e JG |
1634 | |
1635 | /* For ATA pass thru (SAT) commands, generate a sense block if | |
1636 | * user mandated it or if there's an error. Note that if we | |
84a9a8cd GG |
1637 | * generate because the user forced us to [CK_COND =1], a check |
1638 | * condition is generated and the ATA register values are returned | |
b095518e | 1639 | * whether the command completed successfully or not. If there |
84a9a8cd GG |
1640 | * was no error, we use the following sense data: |
1641 | * sk = RECOVERED ERROR | |
1642 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE | |
b095518e | 1643 | */ |
a7dac447 | 1644 | if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) && |
25c7ce7f | 1645 | ((cdb[2] & 0x20) || need_sense)) |
750426aa | 1646 | ata_gen_passthru_sense(qc); |
25c7ce7f CH |
1647 | else if (need_sense) |
1648 | ata_gen_ata_sense(qc); | |
1649 | else | |
7574a837 NC |
1650 | /* Keep the SCSI ML and status byte, clear host byte. */ |
1651 | cmd->result &= 0x0000ffff; | |
1da177e4 | 1652 | |
2aa8f5d6 | 1653 | ata_qc_done(qc); |
1da177e4 LT |
1654 | } |
1655 | ||
1656 | /** | |
1657 | * ata_scsi_translate - Translate then issue SCSI command to ATA device | |
1da177e4 LT |
1658 | * @dev: ATA device to which the command is addressed |
1659 | * @cmd: SCSI command to execute | |
1da177e4 LT |
1660 | * @xlat_func: Actor which translates @cmd to an ATA taskfile |
1661 | * | |
1662 | * Our ->queuecommand() function has decided that the SCSI | |
1663 | * command issued can be directly translated into an ATA | |
1664 | * command, rather than handled internally. | |
1665 | * | |
1666 | * This function sets up an ata_queued_cmd structure for the | |
1667 | * SCSI command, and sends that ata_queued_cmd to the hardware. | |
1668 | * | |
ae006510 DG |
1669 | * The xlat_func argument (actor) returns 0 if ready to execute |
1670 | * ATA command, else 1 to finish translation. If 1 is returned | |
1671 | * then cmd->result (and possibly cmd->sense_buffer) are assumed | |
1672 | * to be set reflecting an error condition or clean (early) | |
1673 | * termination. | |
1674 | * | |
1da177e4 | 1675 | * LOCKING: |
cca3974e | 1676 | * spin_lock_irqsave(host lock) |
2115ea94 TH |
1677 | * |
1678 | * RETURNS: | |
1679 | * 0 on success, SCSI_ML_QUEUE_DEVICE_BUSY if the command | |
1680 | * needs to be deferred. | |
1da177e4 | 1681 | */ |
2115ea94 | 1682 | static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd, |
2115ea94 | 1683 | ata_xlat_func_t xlat_func) |
1da177e4 | 1684 | { |
31cc23b3 | 1685 | struct ata_port *ap = dev->link->ap; |
1da177e4 | 1686 | struct ata_queued_cmd *qc; |
31cc23b3 | 1687 | int rc; |
1da177e4 | 1688 | |
b27dcfb0 | 1689 | qc = ata_scsi_qc_new(dev, cmd); |
1da177e4 | 1690 | if (!qc) |
ae006510 | 1691 | goto err_mem; |
1da177e4 LT |
1692 | |
1693 | /* data is present; dma-map it */ | |
be7db055 CH |
1694 | if (cmd->sc_data_direction == DMA_FROM_DEVICE || |
1695 | cmd->sc_data_direction == DMA_TO_DEVICE) { | |
7120165c | 1696 | if (unlikely(scsi_bufflen(cmd) < 1)) { |
a9a79dfe | 1697 | ata_dev_warn(dev, "WARNING: zero len r/w req\n"); |
ae006510 | 1698 | goto err_did; |
1da177e4 LT |
1699 | } |
1700 | ||
7120165c | 1701 | ata_sg_init(qc, scsi_sglist(cmd), scsi_sg_count(cmd)); |
1da177e4 LT |
1702 | |
1703 | qc->dma_dir = cmd->sc_data_direction; | |
1704 | } | |
1705 | ||
1706 | qc->complete_fn = ata_scsi_qc_complete; | |
1707 | ||
ad706991 | 1708 | if (xlat_func(qc)) |
ae006510 | 1709 | goto early_finish; |
1da177e4 | 1710 | |
31cc23b3 TH |
1711 | if (ap->ops->qc_defer) { |
1712 | if ((rc = ap->ops->qc_defer(qc))) | |
1713 | goto defer; | |
1714 | } | |
1715 | ||
1da177e4 | 1716 | /* select device, send command to hardware */ |
8e0e694a | 1717 | ata_qc_issue(qc); |
1da177e4 | 1718 | |
2115ea94 | 1719 | return 0; |
1da177e4 | 1720 | |
ae006510 | 1721 | early_finish: |
2dcb407e | 1722 | ata_qc_free(qc); |
58bf201d | 1723 | scsi_done(cmd); |
2115ea94 | 1724 | return 0; |
ae006510 DG |
1725 | |
1726 | err_did: | |
1da177e4 | 1727 | ata_qc_free(qc); |
ae006510 | 1728 | cmd->result = (DID_ERROR << 16); |
58bf201d | 1729 | scsi_done(cmd); |
253b92ec | 1730 | err_mem: |
2115ea94 | 1731 | return 0; |
3dc1d881 TH |
1732 | |
1733 | defer: | |
31cc23b3 | 1734 | ata_qc_free(qc); |
31cc23b3 TH |
1735 | if (rc == ATA_DEFER_LINK) |
1736 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
1737 | else | |
1738 | return SCSI_MLQUEUE_HOST_BUSY; | |
1da177e4 LT |
1739 | } |
1740 | ||
f0a37d12 CH |
1741 | struct ata_scsi_args { |
1742 | struct ata_device *dev; | |
1743 | u16 *id; | |
1744 | struct scsi_cmnd *cmd; | |
f0a37d12 CH |
1745 | }; |
1746 | ||
1da177e4 LT |
1747 | /** |
1748 | * ata_scsi_rbuf_fill - wrapper for SCSI command simulators | |
1749 | * @args: device IDENTIFY data / SCSI command of interest. | |
1750 | * @actor: Callback hook for desired SCSI command simulator | |
1751 | * | |
1752 | * Takes care of the hard work of simulating a SCSI command... | |
1753 | * Mapping the response buffer, calling the command's handler, | |
1754 | * and handling the handler's return value. This return value | |
1755 | * indicates whether the handler wishes the SCSI command to be | |
ae006510 DG |
1756 | * completed successfully (0), or not (in which case cmd->result |
1757 | * and sense buffer are assumed to be set). | |
1da177e4 LT |
1758 | * |
1759 | * LOCKING: | |
cca3974e | 1760 | * spin_lock_irqsave(host lock) |
1da177e4 | 1761 | */ |
f0761be3 | 1762 | static void ata_scsi_rbuf_fill(struct ata_scsi_args *args, |
87340e98 | 1763 | unsigned int (*actor)(struct ata_scsi_args *args, u8 *rbuf)) |
1da177e4 | 1764 | { |
87340e98 | 1765 | unsigned int rc; |
1da177e4 | 1766 | struct scsi_cmnd *cmd = args->cmd; |
b445c568 JG |
1767 | unsigned long flags; |
1768 | ||
56b4f06c DLM |
1769 | spin_lock_irqsave(&ata_scsi_rbuf_lock, flags); |
1770 | ||
1771 | memset(ata_scsi_rbuf, 0, ATA_SCSI_RBUF_SIZE); | |
1772 | rc = actor(args, ata_scsi_rbuf); | |
1773 | if (rc == 0) | |
1774 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), | |
1775 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); | |
1776 | ||
1777 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, flags); | |
b445c568 | 1778 | |
ae006510 | 1779 | if (rc == 0) |
1da177e4 | 1780 | cmd->result = SAM_STAT_GOOD; |
1da177e4 LT |
1781 | } |
1782 | ||
1783 | /** | |
1784 | * ata_scsiop_inq_std - Simulate INQUIRY command | |
1785 | * @args: device IDENTIFY data / SCSI command of interest. | |
1786 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
1787 | * |
1788 | * Returns standard device identification data associated | |
b142eb65 | 1789 | * with non-VPD INQUIRY command output. |
1da177e4 LT |
1790 | * |
1791 | * LOCKING: | |
cca3974e | 1792 | * spin_lock_irqsave(host lock) |
1da177e4 | 1793 | */ |
87340e98 | 1794 | static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 1795 | { |
e94f7914 | 1796 | static const u8 versions[] = { |
f9ca5ab8 | 1797 | 0x00, |
87340e98 TH |
1798 | 0x60, /* SAM-3 (no version claimed) */ |
1799 | ||
1800 | 0x03, | |
1801 | 0x20, /* SBC-2 (no version claimed) */ | |
1802 | ||
29a37ea4 TY |
1803 | 0x03, |
1804 | 0x00 /* SPC-3 (no version claimed) */ | |
87340e98 | 1805 | }; |
e94f7914 | 1806 | static const u8 versions_zbc[] = { |
f9ca5ab8 HR |
1807 | 0x00, |
1808 | 0xA0, /* SAM-5 (no version claimed) */ | |
1809 | ||
856c4663 HR |
1810 | 0x06, |
1811 | 0x00, /* SBC-4 (no version claimed) */ | |
f9ca5ab8 | 1812 | |
856c4663 HR |
1813 | 0x05, |
1814 | 0xC0, /* SPC-5 (no version claimed) */ | |
f9ca5ab8 HR |
1815 | |
1816 | 0x60, | |
856c4663 | 1817 | 0x24, /* ZBC r05 */ |
f9ca5ab8 HR |
1818 | }; |
1819 | ||
1da177e4 LT |
1820 | u8 hdr[] = { |
1821 | TYPE_DISK, | |
1822 | 0, | |
1823 | 0x5, /* claim SPC-3 version compatibility */ | |
1824 | 2, | |
415ffdde TY |
1825 | 95 - 4, |
1826 | 0, | |
1827 | 0, | |
1828 | 2 | |
1da177e4 LT |
1829 | }; |
1830 | ||
8a3e33cf ML |
1831 | /* set scsi removable (RMB) bit per ata bit, or if the |
1832 | * AHCI port says it's external (Hotplug-capable, eSATA). | |
1833 | */ | |
1834 | if (ata_id_removable(args->id) || | |
1835 | (args->dev->link->ap->pflags & ATA_PFLAG_EXTERNAL)) | |
1da177e4 LT |
1836 | hdr[1] |= (1 << 7); |
1837 | ||
56b8cbab | 1838 | if (args->dev->class == ATA_DEV_ZAC) { |
f9ca5ab8 | 1839 | hdr[0] = TYPE_ZBC; |
56b8cbab TY |
1840 | hdr[2] = 0x7; /* claim SPC-5 version compatibility */ |
1841 | } | |
f9ca5ab8 | 1842 | |
2132df16 DLM |
1843 | if (args->dev->flags & ATA_DFLAG_CDL) |
1844 | hdr[2] = 0xd; /* claim SPC-6 version compatibility */ | |
1845 | ||
1da177e4 | 1846 | memcpy(rbuf, hdr, sizeof(hdr)); |
87340e98 TH |
1847 | memcpy(&rbuf[8], "ATA ", 8); |
1848 | ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16); | |
c49a6bf5 KB |
1849 | |
1850 | /* From SAT, use last 2 words from fw rev unless they are spaces */ | |
1851 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV + 2, 4); | |
1852 | if (strncmp(&rbuf[32], " ", 4) == 0) | |
1853 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4); | |
1da177e4 | 1854 | |
87340e98 TH |
1855 | if (rbuf[32] == 0 || rbuf[32] == ' ') |
1856 | memcpy(&rbuf[32], "n/a ", 4); | |
1da177e4 | 1857 | |
856c4663 | 1858 | if (ata_id_zoned_cap(args->id) || args->dev->class == ATA_DEV_ZAC) |
f9ca5ab8 HR |
1859 | memcpy(rbuf + 58, versions_zbc, sizeof(versions_zbc)); |
1860 | else | |
1861 | memcpy(rbuf + 58, versions, sizeof(versions)); | |
1da177e4 LT |
1862 | |
1863 | return 0; | |
1864 | } | |
1865 | ||
1866 | /** | |
b142eb65 | 1867 | * ata_scsiop_inq_00 - Simulate INQUIRY VPD page 0, list of pages |
1da177e4 LT |
1868 | * @args: device IDENTIFY data / SCSI command of interest. |
1869 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 1870 | * |
b142eb65 | 1871 | * Returns list of inquiry VPD pages available. |
1da177e4 LT |
1872 | * |
1873 | * LOCKING: | |
cca3974e | 1874 | * spin_lock_irqsave(host lock) |
1da177e4 | 1875 | */ |
87340e98 | 1876 | static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 1877 | { |
fe22e1c2 | 1878 | int i, num_pages = 0; |
e94f7914 | 1879 | static const u8 pages[] = { |
1da177e4 LT |
1880 | 0x00, /* page 0x00, this page */ |
1881 | 0x80, /* page 0x80, unit serial no page */ | |
1e9dbc92 MW |
1882 | 0x83, /* page 0x83, device ident page */ |
1883 | 0x89, /* page 0x89, ata info page */ | |
18f0f978 | 1884 | 0xb0, /* page 0xb0, block limits page */ |
1e9dbc92 | 1885 | 0xb1, /* page 0xb1, block device characteristics page */ |
02e0a604 | 1886 | 0xb2, /* page 0xb2, thin provisioning page */ |
6d1003ae | 1887 | 0xb6, /* page 0xb6, zoned block device characteristics */ |
fe22e1c2 | 1888 | 0xb9, /* page 0xb9, concurrent positioning ranges */ |
1da177e4 | 1889 | }; |
1da177e4 | 1890 | |
fe22e1c2 DLM |
1891 | for (i = 0; i < sizeof(pages); i++) { |
1892 | if (pages[i] == 0xb6 && | |
1893 | !(args->dev->flags & ATA_DFLAG_ZAC)) | |
1894 | continue; | |
1895 | rbuf[num_pages + 4] = pages[i]; | |
1896 | num_pages++; | |
1897 | } | |
6d1003ae | 1898 | rbuf[3] = num_pages; /* number of supported VPD pages */ |
1da177e4 LT |
1899 | return 0; |
1900 | } | |
1901 | ||
1902 | /** | |
b142eb65 | 1903 | * ata_scsiop_inq_80 - Simulate INQUIRY VPD page 80, device serial number |
1da177e4 LT |
1904 | * @args: device IDENTIFY data / SCSI command of interest. |
1905 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
1906 | * |
1907 | * Returns ATA device serial number. | |
1908 | * | |
1909 | * LOCKING: | |
cca3974e | 1910 | * spin_lock_irqsave(host lock) |
1da177e4 | 1911 | */ |
87340e98 | 1912 | static unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 1913 | { |
e94f7914 | 1914 | static const u8 hdr[] = { |
1da177e4 LT |
1915 | 0, |
1916 | 0x80, /* this page code */ | |
1917 | 0, | |
a0cf733b | 1918 | ATA_ID_SERNO_LEN, /* page len */ |
1da177e4 | 1919 | }; |
1da177e4 | 1920 | |
87340e98 TH |
1921 | memcpy(rbuf, hdr, sizeof(hdr)); |
1922 | ata_id_string(args->id, (unsigned char *) &rbuf[4], | |
1923 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
1da177e4 LT |
1924 | return 0; |
1925 | } | |
1926 | ||
1da177e4 | 1927 | /** |
b142eb65 | 1928 | * ata_scsiop_inq_83 - Simulate INQUIRY VPD page 83, device identity |
1da177e4 LT |
1929 | * @args: device IDENTIFY data / SCSI command of interest. |
1930 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 1931 | * |
b142eb65 JG |
1932 | * Yields two logical unit device identification designators: |
1933 | * - vendor specific ASCII containing the ATA serial number | |
1934 | * - SAT defined "t10 vendor id based" containing ASCII vendor | |
1935 | * name ("ATA "), model and serial numbers. | |
1da177e4 LT |
1936 | * |
1937 | * LOCKING: | |
cca3974e | 1938 | * spin_lock_irqsave(host lock) |
1da177e4 | 1939 | */ |
87340e98 | 1940 | static unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 1941 | { |
b142eb65 | 1942 | const int sat_model_serial_desc_len = 68; |
87340e98 | 1943 | int num; |
1da177e4 | 1944 | |
b142eb65 JG |
1945 | rbuf[1] = 0x83; /* this page code */ |
1946 | num = 4; | |
1947 | ||
87340e98 TH |
1948 | /* piv=0, assoc=lu, code_set=ACSII, designator=vendor */ |
1949 | rbuf[num + 0] = 2; | |
1950 | rbuf[num + 3] = ATA_ID_SERNO_LEN; | |
1951 | num += 4; | |
1952 | ata_id_string(args->id, (unsigned char *) rbuf + num, | |
1953 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
1954 | num += ATA_ID_SERNO_LEN; | |
1955 | ||
1956 | /* SAT defined lu model and serial numbers descriptor */ | |
1957 | /* piv=0, assoc=lu, code_set=ACSII, designator=t10 vendor id */ | |
1958 | rbuf[num + 0] = 2; | |
1959 | rbuf[num + 1] = 1; | |
1960 | rbuf[num + 3] = sat_model_serial_desc_len; | |
1961 | num += 4; | |
1962 | memcpy(rbuf + num, "ATA ", 8); | |
1963 | num += 8; | |
1964 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_PROD, | |
1965 | ATA_ID_PROD_LEN); | |
1966 | num += ATA_ID_PROD_LEN; | |
1967 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_SERNO, | |
1968 | ATA_ID_SERNO_LEN); | |
1969 | num += ATA_ID_SERNO_LEN; | |
1970 | ||
6b3b9d73 HR |
1971 | if (ata_id_has_wwn(args->id)) { |
1972 | /* SAT defined lu world wide name */ | |
1973 | /* piv=0, assoc=lu, code_set=binary, designator=NAA */ | |
1974 | rbuf[num + 0] = 1; | |
1975 | rbuf[num + 1] = 3; | |
1976 | rbuf[num + 3] = ATA_ID_WWN_LEN; | |
1977 | num += 4; | |
1978 | ata_id_string(args->id, (unsigned char *) rbuf + num, | |
1979 | ATA_ID_WWN, ATA_ID_WWN_LEN); | |
1980 | num += ATA_ID_WWN_LEN; | |
1981 | } | |
b142eb65 | 1982 | rbuf[3] = num - 4; /* page len (assume less than 256 bytes) */ |
1da177e4 LT |
1983 | return 0; |
1984 | } | |
1985 | ||
ad355b46 JG |
1986 | /** |
1987 | * ata_scsiop_inq_89 - Simulate INQUIRY VPD page 89, ATA info | |
1988 | * @args: device IDENTIFY data / SCSI command of interest. | |
1989 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
ad355b46 JG |
1990 | * |
1991 | * Yields SAT-specified ATA VPD page. | |
1992 | * | |
1993 | * LOCKING: | |
1994 | * spin_lock_irqsave(host lock) | |
1995 | */ | |
87340e98 | 1996 | static unsigned int ata_scsiop_inq_89(struct ata_scsi_args *args, u8 *rbuf) |
ad355b46 | 1997 | { |
87340e98 TH |
1998 | rbuf[1] = 0x89; /* our page code */ |
1999 | rbuf[2] = (0x238 >> 8); /* page size fixed at 238h */ | |
2000 | rbuf[3] = (0x238 & 0xff); | |
ad355b46 | 2001 | |
87340e98 TH |
2002 | memcpy(&rbuf[8], "linux ", 8); |
2003 | memcpy(&rbuf[16], "libata ", 16); | |
2004 | memcpy(&rbuf[32], DRV_VERSION, 4); | |
ad355b46 | 2005 | |
87340e98 | 2006 | rbuf[36] = 0x34; /* force D2H Reg FIS (34h) */ |
33531001 BZ |
2007 | rbuf[37] = (1 << 7); /* bit 7 indicates Command FIS */ |
2008 | /* TODO: PMP? */ | |
2009 | ||
2010 | /* we don't store the ATA device signature, so we fake it */ | |
2011 | rbuf[38] = ATA_DRDY; /* really, this is Status reg */ | |
2012 | rbuf[40] = 0x1; | |
2013 | rbuf[48] = 0x1; | |
ad355b46 | 2014 | |
87340e98 | 2015 | rbuf[56] = ATA_CMD_ID_ATA; |
ad355b46 | 2016 | |
87340e98 | 2017 | memcpy(&rbuf[60], &args->id[0], 512); |
ad355b46 JG |
2018 | return 0; |
2019 | } | |
2020 | ||
18f0f978 CH |
2021 | static unsigned int ata_scsiop_inq_b0(struct ata_scsi_args *args, u8 *rbuf) |
2022 | { | |
3b545563 | 2023 | struct ata_device *dev = args->dev; |
295124dc | 2024 | u16 min_io_sectors; |
18f0f978 CH |
2025 | |
2026 | rbuf[1] = 0xb0; | |
2027 | rbuf[3] = 0x3c; /* required VPD size with unmap support */ | |
2028 | ||
2029 | /* | |
2030 | * Optimal transfer length granularity. | |
2031 | * | |
2032 | * This is always one physical block, but for disks with a smaller | |
2033 | * logical than physical sector size we need to figure out what the | |
2034 | * latter is. | |
2035 | */ | |
295124dc | 2036 | min_io_sectors = 1 << ata_id_log2_per_physical_sector(args->id); |
18f0f978 CH |
2037 | put_unaligned_be16(min_io_sectors, &rbuf[6]); |
2038 | ||
2039 | /* | |
2040 | * Optimal unmap granularity. | |
2041 | * | |
2042 | * The ATA spec doesn't even know about a granularity or alignment | |
2043 | * for the TRIM command. We can leave away most of the unmap related | |
2044 | * VPD page entries, but we have specifify a granularity to signal | |
2045 | * that we support some form of unmap - in thise case via WRITE SAME | |
2046 | * with the unmap bit set. | |
2047 | */ | |
e78db4df | 2048 | if (ata_id_has_trim(args->id)) { |
3b545563 TH |
2049 | u64 max_blocks = 65535 * ATA_MAX_TRIM_RNUM; |
2050 | ||
2051 | if (dev->horkage & ATA_HORKAGE_MAX_TRIM_128M) | |
2052 | max_blocks = 128 << (20 - SECTOR_SHIFT); | |
2053 | ||
2054 | put_unaligned_be64(max_blocks, &rbuf[36]); | |
18f0f978 | 2055 | put_unaligned_be32(1, &rbuf[28]); |
e78db4df | 2056 | } |
18f0f978 CH |
2057 | |
2058 | return 0; | |
2059 | } | |
2060 | ||
1e9dbc92 MW |
2061 | static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf) |
2062 | { | |
4bca3286 MP |
2063 | int form_factor = ata_id_form_factor(args->id); |
2064 | int media_rotation_rate = ata_id_rotation_rate(args->id); | |
856c4663 | 2065 | u8 zoned = ata_id_zoned_cap(args->id); |
4bca3286 | 2066 | |
1e9dbc92 MW |
2067 | rbuf[1] = 0xb1; |
2068 | rbuf[3] = 0x3c; | |
4bca3286 MP |
2069 | rbuf[4] = media_rotation_rate >> 8; |
2070 | rbuf[5] = media_rotation_rate; | |
2071 | rbuf[7] = form_factor; | |
856c4663 HR |
2072 | if (zoned) |
2073 | rbuf[8] = (zoned << 4); | |
1e9dbc92 MW |
2074 | |
2075 | return 0; | |
2076 | } | |
2077 | ||
02e0a604 MP |
2078 | static unsigned int ata_scsiop_inq_b2(struct ata_scsi_args *args, u8 *rbuf) |
2079 | { | |
2080 | /* SCSI Thin Provisioning VPD page: SBC-3 rev 22 or later */ | |
2081 | rbuf[1] = 0xb2; | |
2082 | rbuf[3] = 0x4; | |
2083 | rbuf[5] = 1 << 6; /* TPWS */ | |
2084 | ||
2085 | return 0; | |
2086 | } | |
2087 | ||
6d1003ae HR |
2088 | static unsigned int ata_scsiop_inq_b6(struct ata_scsi_args *args, u8 *rbuf) |
2089 | { | |
2090 | /* | |
2091 | * zbc-r05 SCSI Zoned Block device characteristics VPD page | |
2092 | */ | |
2093 | rbuf[1] = 0xb6; | |
2094 | rbuf[3] = 0x3C; | |
2095 | ||
2096 | /* | |
2097 | * URSWRZ bit is only meaningful for host-managed ZAC drives | |
2098 | */ | |
2099 | if (args->dev->zac_zoned_cap & 1) | |
2100 | rbuf[4] |= 1; | |
2101 | put_unaligned_be32(args->dev->zac_zones_optimal_open, &rbuf[8]); | |
2102 | put_unaligned_be32(args->dev->zac_zones_optimal_nonseq, &rbuf[12]); | |
2103 | put_unaligned_be32(args->dev->zac_zones_max_open, &rbuf[16]); | |
2104 | ||
2105 | return 0; | |
2106 | } | |
2107 | ||
fe22e1c2 DLM |
2108 | static unsigned int ata_scsiop_inq_b9(struct ata_scsi_args *args, u8 *rbuf) |
2109 | { | |
2110 | struct ata_cpr_log *cpr_log = args->dev->cpr_log; | |
2111 | u8 *desc = &rbuf[64]; | |
2112 | int i; | |
2113 | ||
2114 | /* SCSI Concurrent Positioning Ranges VPD page: SBC-5 rev 1 or later */ | |
2115 | rbuf[1] = 0xb9; | |
6d11acd4 | 2116 | put_unaligned_be16(64 + (int)cpr_log->nr_cpr * 32 - 4, &rbuf[2]); |
fe22e1c2 DLM |
2117 | |
2118 | for (i = 0; i < cpr_log->nr_cpr; i++, desc += 32) { | |
2119 | desc[0] = cpr_log->cpr[i].num; | |
2120 | desc[1] = cpr_log->cpr[i].num_storage_elements; | |
2121 | put_unaligned_be64(cpr_log->cpr[i].start_lba, &desc[8]); | |
2122 | put_unaligned_be64(cpr_log->cpr[i].num_lbas, &desc[16]); | |
2123 | } | |
2124 | ||
2125 | return 0; | |
2126 | } | |
2127 | ||
6ca8e794 PB |
2128 | /** |
2129 | * modecpy - Prepare response for MODE SENSE | |
2130 | * @dest: output buffer | |
2131 | * @src: data being copied | |
2132 | * @n: length of mode page | |
2133 | * @changeable: whether changeable parameters are requested | |
2134 | * | |
2135 | * Generate a generic MODE SENSE page for either current or changeable | |
2136 | * parameters. | |
2137 | * | |
2138 | * LOCKING: | |
2139 | * None. | |
2140 | */ | |
2141 | static void modecpy(u8 *dest, const u8 *src, int n, bool changeable) | |
2142 | { | |
2143 | if (changeable) { | |
2144 | memcpy(dest, src, 2); | |
2145 | memset(dest + 2, 0, n - 2); | |
2146 | } else { | |
2147 | memcpy(dest, src, n); | |
2148 | } | |
2149 | } | |
2150 | ||
1da177e4 LT |
2151 | /** |
2152 | * ata_msense_caching - Simulate MODE SENSE caching info page | |
2153 | * @id: device IDENTIFY data | |
87340e98 | 2154 | * @buf: output buffer |
6ca8e794 | 2155 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2156 | * |
2157 | * Generate a caching info page, which conditionally indicates | |
2158 | * write caching to the SCSI layer, depending on device | |
2159 | * capabilities. | |
2160 | * | |
2161 | * LOCKING: | |
2162 | * None. | |
2163 | */ | |
6ca8e794 | 2164 | static unsigned int ata_msense_caching(u16 *id, u8 *buf, bool changeable) |
1da177e4 | 2165 | { |
6ca8e794 | 2166 | modecpy(buf, def_cache_mpage, sizeof(def_cache_mpage), changeable); |
737bee93 TY |
2167 | if (changeable) { |
2168 | buf[2] |= (1 << 2); /* ata_mselect_caching() */ | |
2169 | } else { | |
2170 | buf[2] |= (ata_id_wcache_enabled(id) << 2); /* write cache enable */ | |
2171 | buf[12] |= (!ata_id_rahead_enabled(id) << 5); /* disable read ahead */ | |
2172 | } | |
87340e98 | 2173 | return sizeof(def_cache_mpage); |
1da177e4 LT |
2174 | } |
2175 | ||
673b2fe6 DLM |
2176 | /* |
2177 | * Simulate MODE SENSE control mode page, sub-page 0. | |
2178 | */ | |
2179 | static unsigned int ata_msense_control_spg0(struct ata_device *dev, u8 *buf, | |
2180 | bool changeable) | |
2181 | { | |
2182 | modecpy(buf, def_control_mpage, | |
2183 | sizeof(def_control_mpage), changeable); | |
2184 | if (changeable) { | |
2185 | /* ata_mselect_control() */ | |
2186 | buf[2] |= (1 << 2); | |
2187 | } else { | |
2188 | bool d_sense = (dev->flags & ATA_DFLAG_D_SENSE); | |
2189 | ||
2190 | /* descriptor format sense data */ | |
2191 | buf[2] |= (d_sense << 2); | |
2192 | } | |
2193 | ||
2194 | return sizeof(def_control_mpage); | |
2195 | } | |
2196 | ||
2197 | /* | |
2198 | * Translate an ATA duration limit in microseconds to a SCSI duration limit | |
2199 | * using the t2cdlunits 0xa (10ms). Since the SCSI duration limits are 2-bytes | |
2200 | * only, take care of overflows. | |
2201 | */ | |
2202 | static inline u16 ata_xlat_cdl_limit(u8 *buf) | |
2203 | { | |
2204 | u32 limit = get_unaligned_le32(buf); | |
2205 | ||
2206 | return min_t(u32, limit / 10000, 65535); | |
2207 | } | |
2208 | ||
2209 | /* | |
2210 | * Simulate MODE SENSE control mode page, sub-pages 07h and 08h | |
2211 | * (command duration limits T2A and T2B mode pages). | |
2212 | */ | |
2213 | static unsigned int ata_msense_control_spgt2(struct ata_device *dev, u8 *buf, | |
2214 | u8 spg) | |
2215 | { | |
2216 | u8 *b, *cdl = dev->cdl, *desc; | |
2217 | u32 policy; | |
2218 | int i; | |
2219 | ||
2220 | /* | |
2221 | * Fill the subpage. The first four bytes of the T2A/T2B mode pages | |
2222 | * are a header. The PAGE LENGTH field is the size of the page | |
2223 | * excluding the header. | |
2224 | */ | |
2225 | buf[0] = CONTROL_MPAGE; | |
2226 | buf[1] = spg; | |
2227 | put_unaligned_be16(CDL_T2_SUB_MPAGE_LEN - 4, &buf[2]); | |
2228 | if (spg == CDL_T2A_SUB_MPAGE) { | |
2229 | /* | |
2230 | * Read descriptors map to the T2A page: | |
2231 | * set perf_vs_duration_guidleine. | |
2232 | */ | |
2233 | buf[7] = (cdl[0] & 0x03) << 4; | |
2234 | desc = cdl + 64; | |
2235 | } else { | |
2236 | /* Write descriptors map to the T2B page */ | |
2237 | desc = cdl + 288; | |
2238 | } | |
2239 | ||
2240 | /* Fill the T2 page descriptors */ | |
2241 | b = &buf[8]; | |
2242 | policy = get_unaligned_le32(&cdl[0]); | |
2243 | for (i = 0; i < 7; i++, b += 32, desc += 32) { | |
2244 | /* t2cdlunits: fixed to 10ms */ | |
2245 | b[0] = 0x0a; | |
2246 | ||
2247 | /* Max inactive time and its policy */ | |
2248 | put_unaligned_be16(ata_xlat_cdl_limit(&desc[8]), &b[2]); | |
2249 | b[6] = ((policy >> 8) & 0x0f) << 4; | |
2250 | ||
2251 | /* Max active time and its policy */ | |
2252 | put_unaligned_be16(ata_xlat_cdl_limit(&desc[4]), &b[4]); | |
2253 | b[6] |= (policy >> 4) & 0x0f; | |
2254 | ||
2255 | /* Command duration guideline and its policy */ | |
2256 | put_unaligned_be16(ata_xlat_cdl_limit(&desc[16]), &b[10]); | |
2257 | b[14] = policy & 0x0f; | |
2258 | } | |
2259 | ||
2260 | return CDL_T2_SUB_MPAGE_LEN; | |
2261 | } | |
2262 | ||
df60f9c6 DLM |
2263 | /* |
2264 | * Simulate MODE SENSE control mode page, sub-page f2h | |
2265 | * (ATA feature control mode page). | |
2266 | */ | |
2267 | static unsigned int ata_msense_control_ata_feature(struct ata_device *dev, | |
2268 | u8 *buf) | |
2269 | { | |
2270 | /* PS=0, SPF=1 */ | |
2271 | buf[0] = CONTROL_MPAGE | (1 << 6); | |
2272 | buf[1] = ATA_FEATURE_SUB_MPAGE; | |
2273 | ||
2274 | /* | |
2275 | * The first four bytes of ATA Feature Control mode page are a header. | |
2276 | * The PAGE LENGTH field is the size of the page excluding the header. | |
2277 | */ | |
2278 | put_unaligned_be16(ATA_FEATURE_SUB_MPAGE_LEN - 4, &buf[2]); | |
2279 | ||
2280 | if (dev->flags & ATA_DFLAG_CDL) | |
2281 | buf[4] = 0x02; /* Support T2A and T2B pages */ | |
2282 | else | |
2283 | buf[4] = 0; | |
2284 | ||
2285 | return ATA_FEATURE_SUB_MPAGE_LEN; | |
2286 | } | |
2287 | ||
1da177e4 | 2288 | /** |
f086b748 | 2289 | * ata_msense_control - Simulate MODE SENSE control mode page |
06dbde5f | 2290 | * @dev: ATA device of interest |
87340e98 | 2291 | * @buf: output buffer |
673b2fe6 | 2292 | * @spg: sub-page code |
6ca8e794 | 2293 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2294 | * |
2295 | * Generate a generic MODE SENSE control mode page. | |
2296 | * | |
2297 | * LOCKING: | |
2298 | * None. | |
2299 | */ | |
f086b748 | 2300 | static unsigned int ata_msense_control(struct ata_device *dev, u8 *buf, |
673b2fe6 DLM |
2301 | u8 spg, bool changeable) |
2302 | { | |
2303 | unsigned int n; | |
2304 | ||
2305 | switch (spg) { | |
2306 | case 0: | |
2307 | return ata_msense_control_spg0(dev, buf, changeable); | |
2308 | case CDL_T2A_SUB_MPAGE: | |
2309 | case CDL_T2B_SUB_MPAGE: | |
2310 | return ata_msense_control_spgt2(dev, buf, spg); | |
df60f9c6 DLM |
2311 | case ATA_FEATURE_SUB_MPAGE: |
2312 | return ata_msense_control_ata_feature(dev, buf); | |
673b2fe6 DLM |
2313 | case ALL_SUB_MPAGES: |
2314 | n = ata_msense_control_spg0(dev, buf, changeable); | |
2315 | n += ata_msense_control_spgt2(dev, buf + n, CDL_T2A_SUB_MPAGE); | |
2316 | n += ata_msense_control_spgt2(dev, buf + n, CDL_T2A_SUB_MPAGE); | |
df60f9c6 | 2317 | n += ata_msense_control_ata_feature(dev, buf + n); |
673b2fe6 DLM |
2318 | return n; |
2319 | default: | |
2320 | return 0; | |
737bee93 | 2321 | } |
1da177e4 LT |
2322 | } |
2323 | ||
2324 | /** | |
2325 | * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page | |
ec2a20e6 | 2326 | * @buf: output buffer |
6ca8e794 | 2327 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2328 | * |
2329 | * Generate a generic MODE SENSE r/w error recovery page. | |
2330 | * | |
2331 | * LOCKING: | |
2332 | * None. | |
2333 | */ | |
6ca8e794 | 2334 | static unsigned int ata_msense_rw_recovery(u8 *buf, bool changeable) |
1da177e4 | 2335 | { |
6ca8e794 PB |
2336 | modecpy(buf, def_rw_recovery_mpage, sizeof(def_rw_recovery_mpage), |
2337 | changeable); | |
00ac37f5 | 2338 | return sizeof(def_rw_recovery_mpage); |
1da177e4 LT |
2339 | } |
2340 | ||
2341 | /** | |
2342 | * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands | |
2343 | * @args: device IDENTIFY data / SCSI command of interest. | |
2344 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 2345 | * |
00ac37f5 DG |
2346 | * Simulate MODE SENSE commands. Assume this is invoked for direct |
2347 | * access devices (e.g. disks) only. There should be no block | |
2348 | * descriptor for other device types. | |
1da177e4 LT |
2349 | * |
2350 | * LOCKING: | |
cca3974e | 2351 | * spin_lock_irqsave(host lock) |
1da177e4 | 2352 | */ |
87340e98 | 2353 | static unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2354 | { |
9a3dccc4 | 2355 | struct ata_device *dev = args->dev; |
87340e98 | 2356 | u8 *scsicmd = args->cmd->cmnd, *p = rbuf; |
e94f7914 | 2357 | static const u8 sat_blk_desc[] = { |
00ac37f5 DG |
2358 | 0, 0, 0, 0, /* number of blocks: sat unspecified */ |
2359 | 0, | |
2360 | 0, 0x2, 0x0 /* block length: 512 bytes */ | |
2361 | }; | |
2362 | u8 pg, spg; | |
87340e98 | 2363 | unsigned int ebd, page_control, six_byte; |
4d2e4980 | 2364 | u8 dpofua = 0, bp = 0xff; |
bcfc867d | 2365 | u16 fp; |
1da177e4 | 2366 | |
1da177e4 | 2367 | six_byte = (scsicmd[0] == MODE_SENSE); |
00ac37f5 DG |
2368 | ebd = !(scsicmd[1] & 0x8); /* dbd bit inverted == edb */ |
2369 | /* | |
2370 | * LLBA bit in msense(10) ignored (compliant) | |
1da177e4 | 2371 | */ |
00ac37f5 | 2372 | |
1da177e4 | 2373 | page_control = scsicmd[2] >> 6; |
ae006510 DG |
2374 | switch (page_control) { |
2375 | case 0: /* current */ | |
6ca8e794 PB |
2376 | case 1: /* changeable */ |
2377 | case 2: /* defaults */ | |
ae006510 DG |
2378 | break; /* supported */ |
2379 | case 3: /* saved */ | |
2380 | goto saving_not_supp; | |
ae006510 | 2381 | default: |
bcfc867d | 2382 | fp = 2; |
0df10b84 | 2383 | bp = 6; |
ae006510 DG |
2384 | goto invalid_fld; |
2385 | } | |
1da177e4 | 2386 | |
87340e98 TH |
2387 | if (six_byte) |
2388 | p += 4 + (ebd ? 8 : 0); | |
2389 | else | |
2390 | p += 8 + (ebd ? 8 : 0); | |
1da177e4 | 2391 | |
00ac37f5 DG |
2392 | pg = scsicmd[2] & 0x3f; |
2393 | spg = scsicmd[3]; | |
673b2fe6 | 2394 | |
00ac37f5 | 2395 | /* |
df60f9c6 | 2396 | * Supported subpages: all subpages and sub-pages 07h, 08h and f2h of |
673b2fe6 | 2397 | * the control page. |
00ac37f5 | 2398 | */ |
673b2fe6 DLM |
2399 | if (spg) { |
2400 | switch (spg) { | |
2401 | case ALL_SUB_MPAGES: | |
2402 | break; | |
2403 | case CDL_T2A_SUB_MPAGE: | |
2404 | case CDL_T2B_SUB_MPAGE: | |
df60f9c6 | 2405 | case ATA_FEATURE_SUB_MPAGE: |
673b2fe6 DLM |
2406 | if (dev->flags & ATA_DFLAG_CDL && pg == CONTROL_MPAGE) |
2407 | break; | |
2408 | fallthrough; | |
2409 | default: | |
2410 | fp = 3; | |
2411 | goto invalid_fld; | |
2412 | } | |
bcfc867d | 2413 | } |
00ac37f5 DG |
2414 | |
2415 | switch(pg) { | |
2416 | case RW_RECOVERY_MPAGE: | |
6ca8e794 | 2417 | p += ata_msense_rw_recovery(p, page_control == 1); |
1da177e4 LT |
2418 | break; |
2419 | ||
00ac37f5 | 2420 | case CACHE_MPAGE: |
6ca8e794 | 2421 | p += ata_msense_caching(args->id, p, page_control == 1); |
1da177e4 LT |
2422 | break; |
2423 | ||
87340e98 | 2424 | case CONTROL_MPAGE: |
673b2fe6 | 2425 | p += ata_msense_control(args->dev, p, spg, page_control == 1); |
1da177e4 | 2426 | break; |
1da177e4 | 2427 | |
00ac37f5 | 2428 | case ALL_MPAGES: |
6ca8e794 PB |
2429 | p += ata_msense_rw_recovery(p, page_control == 1); |
2430 | p += ata_msense_caching(args->id, p, page_control == 1); | |
673b2fe6 | 2431 | p += ata_msense_control(args->dev, p, spg, page_control == 1); |
1da177e4 LT |
2432 | break; |
2433 | ||
2434 | default: /* invalid page code */ | |
bcfc867d | 2435 | fp = 2; |
ae006510 | 2436 | goto invalid_fld; |
1da177e4 LT |
2437 | } |
2438 | ||
4d2e4980 | 2439 | if (dev->flags & ATA_DFLAG_FUA) |
9a3dccc4 TH |
2440 | dpofua = 1 << 4; |
2441 | ||
1da177e4 | 2442 | if (six_byte) { |
87340e98 TH |
2443 | rbuf[0] = p - rbuf - 1; |
2444 | rbuf[2] |= dpofua; | |
00ac37f5 | 2445 | if (ebd) { |
87340e98 TH |
2446 | rbuf[3] = sizeof(sat_blk_desc); |
2447 | memcpy(rbuf + 4, sat_blk_desc, sizeof(sat_blk_desc)); | |
00ac37f5 | 2448 | } |
1da177e4 | 2449 | } else { |
673b2fe6 | 2450 | put_unaligned_be16(p - rbuf - 2, &rbuf[0]); |
87340e98 | 2451 | rbuf[3] |= dpofua; |
00ac37f5 | 2452 | if (ebd) { |
87340e98 TH |
2453 | rbuf[7] = sizeof(sat_blk_desc); |
2454 | memcpy(rbuf + 8, sat_blk_desc, sizeof(sat_blk_desc)); | |
00ac37f5 | 2455 | } |
1da177e4 | 2456 | } |
1da177e4 | 2457 | return 0; |
ae006510 DG |
2458 | |
2459 | invalid_fld: | |
0df10b84 | 2460 | ata_scsi_set_invalid_field(dev, args->cmd, fp, bp); |
ae006510 DG |
2461 | return 1; |
2462 | ||
2463 | saving_not_supp: | |
06dbde5f | 2464 | ata_scsi_set_sense(dev, args->cmd, ILLEGAL_REQUEST, 0x39, 0x0); |
ae006510 DG |
2465 | /* "Saving parameters not supported" */ |
2466 | return 1; | |
1da177e4 LT |
2467 | } |
2468 | ||
2469 | /** | |
2470 | * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands | |
2471 | * @args: device IDENTIFY data / SCSI command of interest. | |
2472 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2473 | * |
2474 | * Simulate READ CAPACITY commands. | |
2475 | * | |
2476 | * LOCKING: | |
6a36261e | 2477 | * None. |
1da177e4 | 2478 | */ |
87340e98 | 2479 | static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2480 | { |
61d79a8e MP |
2481 | struct ata_device *dev = args->dev; |
2482 | u64 last_lba = dev->n_sectors - 1; /* LBA of the last block */ | |
295124dc GG |
2483 | u32 sector_size; /* physical sector size in bytes */ |
2484 | u8 log2_per_phys; | |
2485 | u16 lowest_aligned; | |
2486 | ||
2487 | sector_size = ata_id_logical_sector_size(dev->id); | |
2488 | log2_per_phys = ata_id_log2_per_physical_sector(dev->id); | |
2489 | lowest_aligned = ata_id_logical_sector_offset(dev->id, log2_per_phys); | |
1da177e4 | 2490 | |
1da177e4 | 2491 | if (args->cmd->cmnd[0] == READ_CAPACITY) { |
6a36261e TH |
2492 | if (last_lba >= 0xffffffffULL) |
2493 | last_lba = 0xffffffff; | |
0c144d0d | 2494 | |
1da177e4 | 2495 | /* sector count, 32-bit */ |
87340e98 TH |
2496 | rbuf[0] = last_lba >> (8 * 3); |
2497 | rbuf[1] = last_lba >> (8 * 2); | |
2498 | rbuf[2] = last_lba >> (8 * 1); | |
2499 | rbuf[3] = last_lba; | |
1da177e4 LT |
2500 | |
2501 | /* sector size */ | |
295124dc GG |
2502 | rbuf[4] = sector_size >> (8 * 3); |
2503 | rbuf[5] = sector_size >> (8 * 2); | |
2504 | rbuf[6] = sector_size >> (8 * 1); | |
2505 | rbuf[7] = sector_size; | |
1da177e4 LT |
2506 | } else { |
2507 | /* sector count, 64-bit */ | |
87340e98 TH |
2508 | rbuf[0] = last_lba >> (8 * 7); |
2509 | rbuf[1] = last_lba >> (8 * 6); | |
2510 | rbuf[2] = last_lba >> (8 * 5); | |
2511 | rbuf[3] = last_lba >> (8 * 4); | |
2512 | rbuf[4] = last_lba >> (8 * 3); | |
2513 | rbuf[5] = last_lba >> (8 * 2); | |
2514 | rbuf[6] = last_lba >> (8 * 1); | |
2515 | rbuf[7] = last_lba; | |
1da177e4 LT |
2516 | |
2517 | /* sector size */ | |
295124dc GG |
2518 | rbuf[ 8] = sector_size >> (8 * 3); |
2519 | rbuf[ 9] = sector_size >> (8 * 2); | |
2520 | rbuf[10] = sector_size >> (8 * 1); | |
2521 | rbuf[11] = sector_size; | |
61d79a8e MP |
2522 | |
2523 | rbuf[12] = 0; | |
295124dc | 2524 | rbuf[13] = log2_per_phys; |
61d79a8e MP |
2525 | rbuf[14] = (lowest_aligned >> 8) & 0x3f; |
2526 | rbuf[15] = lowest_aligned; | |
18f0f978 | 2527 | |
71d126fd AF |
2528 | if (ata_id_has_trim(args->id) && |
2529 | !(dev->horkage & ATA_HORKAGE_NOTRIM)) { | |
e61f7d1c | 2530 | rbuf[14] |= 0x80; /* LBPME */ |
e78db4df | 2531 | |
e61f7d1c MP |
2532 | if (ata_id_has_zero_after_trim(args->id) && |
2533 | dev->horkage & ATA_HORKAGE_ZERO_AFTER_TRIM) { | |
2534 | ata_dev_info(dev, "Enabling discard_zeroes_data\n"); | |
2535 | rbuf[14] |= 0x40; /* LBPRZ */ | |
2536 | } | |
e78db4df | 2537 | } |
6d1003ae HR |
2538 | if (ata_id_zoned_cap(args->id) || |
2539 | args->dev->class == ATA_DEV_ZAC) | |
2540 | rbuf[12] = (1 << 4); /* RC_BASIS */ | |
1da177e4 | 2541 | } |
1da177e4 LT |
2542 | return 0; |
2543 | } | |
2544 | ||
2545 | /** | |
2546 | * ata_scsiop_report_luns - Simulate REPORT LUNS command | |
2547 | * @args: device IDENTIFY data / SCSI command of interest. | |
2548 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2549 | * |
2550 | * Simulate REPORT LUNS command. | |
2551 | * | |
2552 | * LOCKING: | |
cca3974e | 2553 | * spin_lock_irqsave(host lock) |
1da177e4 | 2554 | */ |
87340e98 | 2555 | static unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2556 | { |
1da177e4 LT |
2557 | rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */ |
2558 | ||
2559 | return 0; | |
2560 | } | |
2561 | ||
aa18da8b CH |
2562 | /* |
2563 | * ATAPI devices typically report zero for their SCSI version, and sometimes | |
2564 | * deviate from the spec WRT response data format. If SCSI version is | |
2565 | * reported as zero like normal, then we make the following fixups: | |
2566 | * 1) Fake MMC-5 version, to indicate to the Linux scsi midlayer this is a | |
2567 | * modern device. | |
2568 | * 2) Ensure response data format / ATAPI information are always correct. | |
2569 | */ | |
2570 | static void atapi_fixup_inquiry(struct scsi_cmnd *cmd) | |
2571 | { | |
2572 | u8 buf[4]; | |
2573 | ||
2574 | sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, 4); | |
2575 | if (buf[2] == 0) { | |
2576 | buf[2] = 0x5; | |
2577 | buf[3] = 0x32; | |
2578 | } | |
2579 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, 4); | |
2580 | } | |
2581 | ||
77853bf2 | 2582 | static void atapi_qc_complete(struct ata_queued_cmd *qc) |
1da177e4 LT |
2583 | { |
2584 | struct scsi_cmnd *cmd = qc->scsicmd; | |
a22e2eb0 | 2585 | unsigned int err_mask = qc->err_mask; |
1da177e4 | 2586 | |
ff8072d5 HR |
2587 | /* handle completion from EH */ |
2588 | if (unlikely(err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID)) { | |
246619da TH |
2589 | |
2590 | if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) { | |
2591 | /* FIXME: not quite right; we don't want the | |
2592 | * translation of taskfile registers into a | |
2593 | * sense descriptors, since that's only | |
2594 | * correct for ATA, not ATAPI | |
2595 | */ | |
750426aa | 2596 | ata_gen_passthru_sense(qc); |
246619da TH |
2597 | } |
2598 | ||
22aac089 TH |
2599 | /* SCSI EH automatically locks door if sdev->locked is |
2600 | * set. Sometimes door lock request continues to | |
2601 | * fail, for example, when no media is present. This | |
2602 | * creates a loop - SCSI EH issues door lock which | |
2603 | * fails and gets invoked again to acquire sense data | |
2604 | * for the failed command. | |
2605 | * | |
2606 | * If door lock fails, always clear sdev->locked to | |
2607 | * avoid this infinite loop. | |
2a5f07b5 TH |
2608 | * |
2609 | * This may happen before SCSI scan is complete. Make | |
2610 | * sure qc->dev->sdev isn't NULL before dereferencing. | |
22aac089 | 2611 | */ |
2a5f07b5 | 2612 | if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL && qc->dev->sdev) |
22aac089 TH |
2613 | qc->dev->sdev->locked = 0; |
2614 | ||
246619da | 2615 | qc->scsicmd->result = SAM_STAT_CHECK_CONDITION; |
2aa8f5d6 | 2616 | ata_qc_done(qc); |
246619da TH |
2617 | return; |
2618 | } | |
2619 | ||
ff8072d5 HR |
2620 | /* successful completion path */ |
2621 | if (cmd->cmnd[0] == INQUIRY && (cmd->cmnd[1] & 0x03) == 0) | |
2622 | atapi_fixup_inquiry(cmd); | |
2623 | cmd->result = SAM_STAT_GOOD; | |
1da177e4 | 2624 | |
2aa8f5d6 | 2625 | ata_qc_done(qc); |
1da177e4 LT |
2626 | } |
2627 | /** | |
2628 | * atapi_xlat - Initialize PACKET taskfile | |
2629 | * @qc: command structure to be initialized | |
1da177e4 LT |
2630 | * |
2631 | * LOCKING: | |
cca3974e | 2632 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
2633 | * |
2634 | * RETURNS: | |
2635 | * Zero on success, non-zero on failure. | |
2636 | */ | |
ad706991 | 2637 | static unsigned int atapi_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 2638 | { |
542b1444 | 2639 | struct scsi_cmnd *scmd = qc->scsicmd; |
1da177e4 | 2640 | struct ata_device *dev = qc->dev; |
542b1444 | 2641 | int nodata = (scmd->sc_data_direction == DMA_NONE); |
5895ef9a | 2642 | int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO); |
2db78dd3 | 2643 | unsigned int nbytes; |
1da177e4 | 2644 | |
2e5704f6 TH |
2645 | memset(qc->cdb, 0, dev->cdb_len); |
2646 | memcpy(qc->cdb, scmd->cmnd, scmd->cmd_len); | |
1da177e4 LT |
2647 | |
2648 | qc->complete_fn = atapi_qc_complete; | |
2649 | ||
2650 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
542b1444 | 2651 | if (scmd->sc_data_direction == DMA_TO_DEVICE) { |
1da177e4 | 2652 | qc->tf.flags |= ATA_TFLAG_WRITE; |
1da177e4 LT |
2653 | } |
2654 | ||
2655 | qc->tf.command = ATA_CMD_PACKET; | |
aacda375 | 2656 | ata_qc_set_pc_nbytes(qc); |
e00f1ff3 TH |
2657 | |
2658 | /* check whether ATAPI DMA is safe */ | |
5895ef9a | 2659 | if (!nodata && !using_pio && atapi_check_dma(qc)) |
e00f1ff3 | 2660 | using_pio = 1; |
1da177e4 | 2661 | |
e190222d TH |
2662 | /* Some controller variants snoop this value for Packet |
2663 | * transfers to do state machine and FIFO management. Thus we | |
2664 | * want to set it properly, and for DMA where it is | |
2665 | * effectively meaningless. | |
2666 | */ | |
aacda375 | 2667 | nbytes = min(ata_qc_raw_nbytes(qc), (unsigned int)63 * 1024); |
2db78dd3 | 2668 | |
e190222d TH |
2669 | /* Most ATAPI devices which honor transfer chunk size don't |
2670 | * behave according to the spec when odd chunk size which | |
2671 | * matches the transfer length is specified. If the number of | |
2672 | * bytes to transfer is 2n+1. According to the spec, what | |
2673 | * should happen is to indicate that 2n+1 is going to be | |
2674 | * transferred and transfer 2n+2 bytes where the last byte is | |
2675 | * padding. | |
2676 | * | |
2677 | * In practice, this doesn't happen. ATAPI devices first | |
2678 | * indicate and transfer 2n bytes and then indicate and | |
2679 | * transfer 2 bytes where the last byte is padding. | |
2680 | * | |
2681 | * This inconsistency confuses several controllers which | |
2682 | * perform PIO using DMA such as Intel AHCIs and sil3124/32. | |
2683 | * These controllers use actual number of transferred bytes to | |
8d1e02d1 | 2684 | * update DMA pointer and transfer of 4n+2 bytes make those |
e190222d TH |
2685 | * controller push DMA pointer by 4n+4 bytes because SATA data |
2686 | * FISes are aligned to 4 bytes. This causes data corruption | |
2687 | * and buffer overrun. | |
2688 | * | |
2689 | * Always setting nbytes to even number solves this problem | |
2690 | * because then ATAPI devices don't have to split data at 2n | |
2691 | * boundaries. | |
2692 | */ | |
2693 | if (nbytes & 0x1) | |
2694 | nbytes++; | |
2695 | ||
2db78dd3 AC |
2696 | qc->tf.lbam = (nbytes & 0xFF); |
2697 | qc->tf.lbah = (nbytes >> 8); | |
2698 | ||
5895ef9a TH |
2699 | if (nodata) |
2700 | qc->tf.protocol = ATAPI_PROT_NODATA; | |
2701 | else if (using_pio) | |
2702 | qc->tf.protocol = ATAPI_PROT_PIO; | |
2703 | else { | |
e00f1ff3 | 2704 | /* DMA data xfer */ |
0dc36888 | 2705 | qc->tf.protocol = ATAPI_PROT_DMA; |
1da177e4 LT |
2706 | qc->tf.feature |= ATAPI_PKT_DMA; |
2707 | ||
91163006 TH |
2708 | if ((dev->flags & ATA_DFLAG_DMADIR) && |
2709 | (scmd->sc_data_direction != DMA_TO_DEVICE)) | |
95de719a | 2710 | /* some SATA bridges need us to indicate data xfer direction */ |
1da177e4 | 2711 | qc->tf.feature |= ATAPI_DMADIR; |
1da177e4 LT |
2712 | } |
2713 | ||
2db78dd3 AC |
2714 | |
2715 | /* FIXME: We need to translate 0x05 READ_BLOCK_LIMITS to a MODE_SENSE | |
2716 | as ATAPI tape drives don't get this right otherwise */ | |
1da177e4 LT |
2717 | return 0; |
2718 | } | |
2719 | ||
7f875850 | 2720 | static struct ata_device *ata_find_dev(struct ata_port *ap, unsigned int devno) |
ab5b3a5b | 2721 | { |
7f875850 DLM |
2722 | /* |
2723 | * For the non-PMP case, ata_link_max_devices() returns 1 (SATA case), | |
2724 | * or 2 (IDE master + slave case). However, the former case includes | |
2725 | * libsas hosted devices which are numbered per scsi host, leading | |
2726 | * to devno potentially being larger than 0 but with each struct | |
2727 | * ata_device having its own struct ata_port and struct ata_link. | |
2728 | * To accommodate these, ignore devno and always use device number 0. | |
2729 | */ | |
2730 | if (likely(!sata_pmp_attached(ap))) { | |
2731 | int link_max_devices = ata_link_max_devices(&ap->link); | |
2732 | ||
2733 | if (link_max_devices == 1) | |
2734 | return &ap->link.device[0]; | |
2735 | ||
2736 | if (devno < link_max_devices) | |
41bda9c9 | 2737 | return &ap->link.device[devno]; |
7f875850 DLM |
2738 | |
2739 | return NULL; | |
41bda9c9 TH |
2740 | } |
2741 | ||
7f875850 DLM |
2742 | /* |
2743 | * For PMP-attached devices, the device number corresponds to C | |
2744 | * (channel) of SCSI [H:C:I:L], indicating the port pmp link | |
2745 | * for the device. | |
2746 | */ | |
2747 | if (devno < ap->nr_pmp_links) | |
2748 | return &ap->pmp_link[devno].device[0]; | |
2749 | ||
ab5b3a5b TH |
2750 | return NULL; |
2751 | } | |
2752 | ||
2dcb407e JG |
2753 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
2754 | const struct scsi_device *scsidev) | |
ab5b3a5b | 2755 | { |
41bda9c9 TH |
2756 | int devno; |
2757 | ||
ab5b3a5b | 2758 | /* skip commands not addressed to targets we simulate */ |
071f44b1 | 2759 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
2760 | if (unlikely(scsidev->channel || scsidev->lun)) |
2761 | return NULL; | |
2762 | devno = scsidev->id; | |
2763 | } else { | |
2764 | if (unlikely(scsidev->id || scsidev->lun)) | |
2765 | return NULL; | |
2766 | devno = scsidev->channel; | |
2767 | } | |
ab5b3a5b | 2768 | |
41bda9c9 | 2769 | return ata_find_dev(ap, devno); |
ab5b3a5b TH |
2770 | } |
2771 | ||
1da177e4 LT |
2772 | /** |
2773 | * ata_scsi_find_dev - lookup ata_device from scsi_cmnd | |
2774 | * @ap: ATA port to which the device is attached | |
2775 | * @scsidev: SCSI device from which we derive the ATA device | |
2776 | * | |
2777 | * Given various information provided in struct scsi_cmnd, | |
2778 | * map that onto an ATA bus, and using that mapping | |
2779 | * determine which ata_device is associated with the | |
2780 | * SCSI command to be sent. | |
2781 | * | |
2782 | * LOCKING: | |
cca3974e | 2783 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
2784 | * |
2785 | * RETURNS: | |
2786 | * Associated ATA device, or %NULL if not found. | |
2787 | */ | |
ec811a94 | 2788 | struct ata_device * |
057ace5e | 2789 | ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev) |
1da177e4 | 2790 | { |
ab5b3a5b | 2791 | struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev); |
1da177e4 | 2792 | |
2486fa56 | 2793 | if (unlikely(!dev || !ata_dev_enabled(dev))) |
1da177e4 LT |
2794 | return NULL; |
2795 | ||
1da177e4 LT |
2796 | return dev; |
2797 | } | |
2798 | ||
b095518e JG |
2799 | /* |
2800 | * ata_scsi_map_proto - Map pass-thru protocol value to taskfile value. | |
2801 | * @byte1: Byte 1 from pass-thru CDB. | |
2802 | * | |
2803 | * RETURNS: | |
2804 | * ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise. | |
2805 | */ | |
2806 | static u8 | |
2807 | ata_scsi_map_proto(u8 byte1) | |
2808 | { | |
2809 | switch((byte1 & 0x1e) >> 1) { | |
2dcb407e JG |
2810 | case 3: /* Non-data */ |
2811 | return ATA_PROT_NODATA; | |
2812 | ||
2813 | case 6: /* DMA */ | |
2814 | case 10: /* UDMA Data-in */ | |
2815 | case 11: /* UDMA Data-Out */ | |
2816 | return ATA_PROT_DMA; | |
2817 | ||
2818 | case 4: /* PIO Data-in */ | |
2819 | case 5: /* PIO Data-out */ | |
2820 | return ATA_PROT_PIO; | |
2821 | ||
ee7fb331 VK |
2822 | case 12: /* FPDMA */ |
2823 | return ATA_PROT_NCQ; | |
2824 | ||
2dcb407e JG |
2825 | case 0: /* Hard Reset */ |
2826 | case 1: /* SRST */ | |
2827 | case 8: /* Device Diagnostic */ | |
2828 | case 9: /* Device Reset */ | |
2829 | case 7: /* DMA Queued */ | |
2dcb407e JG |
2830 | case 15: /* Return Response Info */ |
2831 | default: /* Reserved */ | |
2832 | break; | |
b095518e JG |
2833 | } |
2834 | ||
2835 | return ATA_PROT_UNKNOWN; | |
2836 | } | |
2837 | ||
2838 | /** | |
2839 | * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile | |
2840 | * @qc: command structure to be initialized | |
b095518e | 2841 | * |
b1ffbf85 | 2842 | * Handles either 12, 16, or 32-byte versions of the CDB. |
b095518e JG |
2843 | * |
2844 | * RETURNS: | |
2845 | * Zero on success, non-zero on failure. | |
2846 | */ | |
ad706991 | 2847 | static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc) |
b095518e JG |
2848 | { |
2849 | struct ata_taskfile *tf = &(qc->tf); | |
542b1444 | 2850 | struct scsi_cmnd *scmd = qc->scsicmd; |
f79d409f | 2851 | struct ata_device *dev = qc->dev; |
ad706991 | 2852 | const u8 *cdb = scmd->cmnd; |
bcfc867d | 2853 | u16 fp; |
b1ffbf85 | 2854 | u16 cdb_offset = 0; |
b095518e | 2855 | |
b1ffbf85 MI |
2856 | /* 7Fh variable length cmd means a ata pass-thru(32) */ |
2857 | if (cdb[0] == VARIABLE_LENGTH_CMD) | |
2858 | cdb_offset = 9; | |
2859 | ||
2860 | tf->protocol = ata_scsi_map_proto(cdb[1 + cdb_offset]); | |
2861 | if (tf->protocol == ATA_PROT_UNKNOWN) { | |
bcfc867d | 2862 | fp = 1; |
9a405257 | 2863 | goto invalid_fld; |
bcfc867d | 2864 | } |
8190bdb9 | 2865 | |
5da5231b GK |
2866 | if ((cdb[2 + cdb_offset] & 0x3) == 0) { |
2867 | /* | |
2868 | * When T_LENGTH is zero (No data is transferred), dir should | |
2869 | * be DMA_NONE. | |
2870 | */ | |
2871 | if (scmd->sc_data_direction != DMA_NONE) { | |
2872 | fp = 2 + cdb_offset; | |
2873 | goto invalid_fld; | |
2874 | } | |
2875 | ||
2876 | if (ata_is_ncq(tf->protocol)) | |
2877 | tf->protocol = ATA_PROT_NCQ_NODATA; | |
2878 | } | |
5b844b63 | 2879 | |
5f8e7f17 VK |
2880 | /* enable LBA */ |
2881 | tf->flags |= ATA_TFLAG_LBA; | |
2882 | ||
b095518e JG |
2883 | /* |
2884 | * 12 and 16 byte CDBs use different offsets to | |
2885 | * provide the various register values. | |
2886 | */ | |
59b00404 SS |
2887 | switch (cdb[0]) { |
2888 | case ATA_16: | |
b095518e JG |
2889 | /* |
2890 | * 16-byte CDB - may contain extended commands. | |
2891 | * | |
2892 | * If that is the case, copy the upper byte register values. | |
2893 | */ | |
542b1444 TH |
2894 | if (cdb[1] & 0x01) { |
2895 | tf->hob_feature = cdb[3]; | |
2896 | tf->hob_nsect = cdb[5]; | |
2897 | tf->hob_lbal = cdb[7]; | |
2898 | tf->hob_lbam = cdb[9]; | |
2899 | tf->hob_lbah = cdb[11]; | |
b095518e JG |
2900 | tf->flags |= ATA_TFLAG_LBA48; |
2901 | } else | |
2902 | tf->flags &= ~ATA_TFLAG_LBA48; | |
2903 | ||
2904 | /* | |
2905 | * Always copy low byte, device and command registers. | |
2906 | */ | |
542b1444 TH |
2907 | tf->feature = cdb[4]; |
2908 | tf->nsect = cdb[6]; | |
2909 | tf->lbal = cdb[8]; | |
2910 | tf->lbam = cdb[10]; | |
2911 | tf->lbah = cdb[12]; | |
2912 | tf->device = cdb[13]; | |
2913 | tf->command = cdb[14]; | |
59b00404 SS |
2914 | break; |
2915 | case ATA_12: | |
b095518e JG |
2916 | /* |
2917 | * 12-byte CDB - incapable of extended commands. | |
2918 | */ | |
2919 | tf->flags &= ~ATA_TFLAG_LBA48; | |
2920 | ||
542b1444 TH |
2921 | tf->feature = cdb[3]; |
2922 | tf->nsect = cdb[4]; | |
2923 | tf->lbal = cdb[5]; | |
2924 | tf->lbam = cdb[6]; | |
2925 | tf->lbah = cdb[7]; | |
2926 | tf->device = cdb[8]; | |
2927 | tf->command = cdb[9]; | |
59b00404 SS |
2928 | break; |
2929 | default: | |
b1ffbf85 MI |
2930 | /* |
2931 | * 32-byte CDB - may contain extended command fields. | |
2932 | * | |
2933 | * If that is the case, copy the upper byte register values. | |
2934 | */ | |
2935 | if (cdb[10] & 0x01) { | |
2936 | tf->hob_feature = cdb[20]; | |
2937 | tf->hob_nsect = cdb[22]; | |
2938 | tf->hob_lbal = cdb[16]; | |
2939 | tf->hob_lbam = cdb[15]; | |
2940 | tf->hob_lbah = cdb[14]; | |
2941 | tf->flags |= ATA_TFLAG_LBA48; | |
2942 | } else | |
2943 | tf->flags &= ~ATA_TFLAG_LBA48; | |
2944 | ||
2945 | tf->feature = cdb[21]; | |
2946 | tf->nsect = cdb[23]; | |
2947 | tf->lbal = cdb[19]; | |
2948 | tf->lbam = cdb[18]; | |
2949 | tf->lbah = cdb[17]; | |
2950 | tf->device = cdb[24]; | |
2951 | tf->command = cdb[25]; | |
2952 | tf->auxiliary = get_unaligned_be32(&cdb[28]); | |
59b00404 | 2953 | break; |
b095518e | 2954 | } |
fa4453c4 | 2955 | |
179b310a HR |
2956 | /* For NCQ commands copy the tag value */ |
2957 | if (ata_is_ncq(tf->protocol)) | |
4e5b6260 | 2958 | tf->nsect = qc->hw_tag << 3; |
ee7fb331 | 2959 | |
fa4453c4 AL |
2960 | /* enforce correct master/slave bit */ |
2961 | tf->device = dev->devno ? | |
2962 | tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1; | |
b095518e | 2963 | |
bd30add8 | 2964 | switch (tf->command) { |
295124dc | 2965 | /* READ/WRITE LONG use a non-standard sect_size */ |
bd30add8 TH |
2966 | case ATA_CMD_READ_LONG: |
2967 | case ATA_CMD_READ_LONG_ONCE: | |
2968 | case ATA_CMD_WRITE_LONG: | |
2969 | case ATA_CMD_WRITE_LONG_ONCE: | |
bcfc867d HR |
2970 | if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1) { |
2971 | fp = 1; | |
bd30add8 | 2972 | goto invalid_fld; |
bcfc867d | 2973 | } |
bd30add8 | 2974 | qc->sect_size = scsi_bufflen(scmd); |
295124dc GG |
2975 | break; |
2976 | ||
2977 | /* commands using reported Logical Block size (e.g. 512 or 4K) */ | |
2978 | case ATA_CMD_CFA_WRITE_NE: | |
2979 | case ATA_CMD_CFA_TRANS_SECT: | |
2980 | case ATA_CMD_CFA_WRITE_MULT_NE: | |
2981 | /* XXX: case ATA_CMD_CFA_WRITE_SECTORS_WITHOUT_ERASE: */ | |
2982 | case ATA_CMD_READ: | |
2983 | case ATA_CMD_READ_EXT: | |
2984 | case ATA_CMD_READ_QUEUED: | |
2985 | /* XXX: case ATA_CMD_READ_QUEUED_EXT: */ | |
2986 | case ATA_CMD_FPDMA_READ: | |
2987 | case ATA_CMD_READ_MULTI: | |
2988 | case ATA_CMD_READ_MULTI_EXT: | |
2989 | case ATA_CMD_PIO_READ: | |
2990 | case ATA_CMD_PIO_READ_EXT: | |
2991 | case ATA_CMD_READ_STREAM_DMA_EXT: | |
2992 | case ATA_CMD_READ_STREAM_EXT: | |
2993 | case ATA_CMD_VERIFY: | |
2994 | case ATA_CMD_VERIFY_EXT: | |
2995 | case ATA_CMD_WRITE: | |
2996 | case ATA_CMD_WRITE_EXT: | |
2997 | case ATA_CMD_WRITE_FUA_EXT: | |
2998 | case ATA_CMD_WRITE_QUEUED: | |
2999 | case ATA_CMD_WRITE_QUEUED_FUA_EXT: | |
3000 | case ATA_CMD_FPDMA_WRITE: | |
3001 | case ATA_CMD_WRITE_MULTI: | |
3002 | case ATA_CMD_WRITE_MULTI_EXT: | |
3003 | case ATA_CMD_WRITE_MULTI_FUA_EXT: | |
3004 | case ATA_CMD_PIO_WRITE: | |
3005 | case ATA_CMD_PIO_WRITE_EXT: | |
3006 | case ATA_CMD_WRITE_STREAM_DMA_EXT: | |
3007 | case ATA_CMD_WRITE_STREAM_EXT: | |
3008 | qc->sect_size = scmd->device->sector_size; | |
3009 | break; | |
3010 | ||
3011 | /* Everything else uses 512 byte "sectors" */ | |
3012 | default: | |
3013 | qc->sect_size = ATA_SECT_SIZE; | |
bd30add8 TH |
3014 | } |
3015 | ||
3016 | /* | |
3017 | * Set flags so that all registers will be written, pass on | |
3018 | * write indication (used for PIO/DMA setup), result TF is | |
3019 | * copied back and we don't whine too much about its failure. | |
3020 | */ | |
bc496ed0 | 3021 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
bd30add8 TH |
3022 | if (scmd->sc_data_direction == DMA_TO_DEVICE) |
3023 | tf->flags |= ATA_TFLAG_WRITE; | |
3024 | ||
3025 | qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET; | |
3026 | ||
3027 | /* | |
3028 | * Set transfer length. | |
3029 | * | |
3030 | * TODO: find out if we need to do more here to | |
3031 | * cover scatter/gather case. | |
3032 | */ | |
3033 | ata_qc_set_pc_nbytes(qc); | |
3034 | ||
3035 | /* We may not issue DMA commands if no DMA mode is set */ | |
6ac586f2 | 3036 | if (tf->protocol == ATA_PROT_DMA && !ata_dma_enabled(dev)) { |
bcfc867d | 3037 | fp = 1; |
bd30add8 | 3038 | goto invalid_fld; |
2c1ec6fd EB |
3039 | } |
3040 | ||
3041 | /* We may not issue NCQ commands to devices not supporting NCQ */ | |
3042 | if (ata_is_ncq(tf->protocol) && !ata_ncq_enabled(dev)) { | |
3043 | fp = 1; | |
3044 | goto invalid_fld; | |
bcfc867d | 3045 | } |
bd30add8 | 3046 | |
1dce589c | 3047 | /* sanity check for pio multi commands */ |
bcfc867d HR |
3048 | if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf)) { |
3049 | fp = 1; | |
1dce589c | 3050 | goto invalid_fld; |
bcfc867d | 3051 | } |
1dce589c AL |
3052 | |
3053 | if (is_multi_taskfile(tf)) { | |
3054 | unsigned int multi_count = 1 << (cdb[1] >> 5); | |
3055 | ||
3056 | /* compare the passed through multi_count | |
3057 | * with the cached multi_count of libata | |
3058 | */ | |
3059 | if (multi_count != dev->multi_count) | |
a9a79dfe JP |
3060 | ata_dev_warn(dev, "invalid multi_count %u ignored\n", |
3061 | multi_count); | |
d26fc955 | 3062 | } |
1dce589c | 3063 | |
b095518e JG |
3064 | /* |
3065 | * Filter SET_FEATURES - XFER MODE command -- otherwise, | |
3066 | * SET_FEATURES - XFER MODE must be preceded/succeeded | |
3067 | * by an update to hardware-specific registers for each | |
3068 | * controller (i.e. the reason for ->set_piomode(), | |
3069 | * ->set_dmamode(), and ->post_set_mode() hooks). | |
3070 | */ | |
bd30add8 | 3071 | if (tf->command == ATA_CMD_SET_FEATURES && |
bcfc867d HR |
3072 | tf->feature == SETFEATURES_XFER) { |
3073 | fp = (cdb[0] == ATA_16) ? 4 : 3; | |
9a405257 | 3074 | goto invalid_fld; |
bcfc867d | 3075 | } |
b095518e JG |
3076 | |
3077 | /* | |
bd30add8 TH |
3078 | * Filter TPM commands by default. These provide an |
3079 | * essentially uncontrolled encrypted "back door" between | |
3080 | * applications and the disk. Set libata.allow_tpm=1 if you | |
3081 | * have a real reason for wanting to use them. This ensures | |
3082 | * that installed software cannot easily mess stuff up without | |
3083 | * user intent. DVR type users will probably ship with this enabled | |
3084 | * for movie content management. | |
b095518e | 3085 | * |
bd30add8 TH |
3086 | * Note that for ATA8 we can issue a DCS change and DCS freeze lock |
3087 | * for this and should do in future but that it is not sufficient as | |
3088 | * DCS is an optional feature set. Thus we also do the software filter | |
3089 | * so that we comply with the TC consortium stated goal that the user | |
3090 | * can turn off TC features of their system. | |
b095518e | 3091 | */ |
bcfc867d HR |
3092 | if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm) { |
3093 | fp = (cdb[0] == ATA_16) ? 14 : 9; | |
bd30add8 | 3094 | goto invalid_fld; |
bcfc867d | 3095 | } |
e61e0672 | 3096 | |
b095518e | 3097 | return 0; |
9a405257 TH |
3098 | |
3099 | invalid_fld: | |
0df10b84 | 3100 | ata_scsi_set_invalid_field(dev, scmd, fp, 0xff); |
9a405257 | 3101 | return 1; |
b095518e JG |
3102 | } |
3103 | ||
9379e6b8 ST |
3104 | /** |
3105 | * ata_format_dsm_trim_descr() - SATL Write Same to DSM Trim | |
3106 | * @cmd: SCSI command being translated | |
ef2d7392 | 3107 | * @trmax: Maximum number of entries that will fit in sector_size bytes. |
9379e6b8 | 3108 | * @sector: Starting sector |
7b203094 | 3109 | * @count: Total Range of request in logical sectors |
9379e6b8 ST |
3110 | * |
3111 | * Rewrite the WRITE SAME descriptor to be a DSM TRIM little-endian formatted | |
3112 | * descriptor. | |
3113 | * | |
3114 | * Upto 64 entries of the format: | |
3115 | * 63:48 Range Length | |
3116 | * 47:0 LBA | |
3117 | * | |
3118 | * Range Length of 0 is ignored. | |
3119 | * LBA's should be sorted order and not overlap. | |
3120 | * | |
3121 | * NOTE: this is the same format as ADD LBA(S) TO NV CACHE PINNED SET | |
ef2d7392 ST |
3122 | * |
3123 | * Return: Number of bytes copied into sglist. | |
9379e6b8 | 3124 | */ |
ef2d7392 ST |
3125 | static size_t ata_format_dsm_trim_descr(struct scsi_cmnd *cmd, u32 trmax, |
3126 | u64 sector, u32 count) | |
3127 | { | |
3128 | struct scsi_device *sdp = cmd->device; | |
3129 | size_t len = sdp->sector_size; | |
3130 | size_t r; | |
3131 | __le64 *buf; | |
3132 | u32 i = 0; | |
9379e6b8 ST |
3133 | unsigned long flags; |
3134 | ||
ef2d7392 ST |
3135 | WARN_ON(len > ATA_SCSI_RBUF_SIZE); |
3136 | ||
3137 | if (len > ATA_SCSI_RBUF_SIZE) | |
3138 | len = ATA_SCSI_RBUF_SIZE; | |
9379e6b8 ST |
3139 | |
3140 | spin_lock_irqsave(&ata_scsi_rbuf_lock, flags); | |
ef2d7392 ST |
3141 | buf = ((void *)ata_scsi_rbuf); |
3142 | memset(buf, 0, len); | |
3143 | while (i < trmax) { | |
9379e6b8 ST |
3144 | u64 entry = sector | |
3145 | ((u64)(count > 0xffff ? 0xffff : count) << 48); | |
ef2d7392 | 3146 | buf[i++] = __cpu_to_le64(entry); |
9379e6b8 ST |
3147 | if (count <= 0xffff) |
3148 | break; | |
3149 | count -= 0xffff; | |
3150 | sector += 0xffff; | |
3151 | } | |
ef2d7392 | 3152 | r = sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, len); |
9379e6b8 ST |
3153 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, flags); |
3154 | ||
ef2d7392 | 3155 | return r; |
9379e6b8 ST |
3156 | } |
3157 | ||
7b203094 ST |
3158 | /** |
3159 | * ata_scsi_write_same_xlat() - SATL Write Same to ATA SCT Write Same | |
3160 | * @qc: Command to be translated | |
3161 | * | |
3162 | * Translate a SCSI WRITE SAME command to be either a DSM TRIM command or | |
3163 | * an SCT Write Same command. | |
6baf20bc MCC |
3164 | * Based on WRITE SAME has the UNMAP flag: |
3165 | * | |
3166 | * - When set translate to DSM TRIM | |
3167 | * - When clear translate to SCT Write Same | |
7b203094 | 3168 | */ |
18f0f978 CH |
3169 | static unsigned int ata_scsi_write_same_xlat(struct ata_queued_cmd *qc) |
3170 | { | |
3171 | struct ata_taskfile *tf = &qc->tf; | |
3172 | struct scsi_cmnd *scmd = qc->scsicmd; | |
ef2d7392 ST |
3173 | struct scsi_device *sdp = scmd->device; |
3174 | size_t len = sdp->sector_size; | |
18f0f978 CH |
3175 | struct ata_device *dev = qc->dev; |
3176 | const u8 *cdb = scmd->cmnd; | |
3177 | u64 block; | |
3178 | u32 n_block; | |
ef2d7392 | 3179 | const u32 trmax = len >> 3; |
18f0f978 | 3180 | u32 size; |
bcfc867d | 3181 | u16 fp; |
0df10b84 | 3182 | u8 bp = 0xff; |
7b203094 | 3183 | u8 unmap = cdb[1] & 0x8; |
18f0f978 CH |
3184 | |
3185 | /* we may not issue DMA commands if no DMA mode is set */ | |
6ac586f2 | 3186 | if (unlikely(!ata_dma_enabled(dev))) |
bcfc867d | 3187 | goto invalid_opcode; |
18f0f978 | 3188 | |
c6ade20f CH |
3189 | /* |
3190 | * We only allow sending this command through the block layer, | |
3191 | * as it modifies the DATA OUT buffer, which would corrupt user | |
3192 | * memory for SG_IO commands. | |
3193 | */ | |
c8329cd5 | 3194 | if (unlikely(blk_rq_is_passthrough(scsi_cmd_to_rq(scmd)))) |
c6ade20f CH |
3195 | goto invalid_opcode; |
3196 | ||
bcfc867d HR |
3197 | if (unlikely(scmd->cmd_len < 16)) { |
3198 | fp = 15; | |
18f0f978 | 3199 | goto invalid_fld; |
bcfc867d | 3200 | } |
18f0f978 CH |
3201 | scsi_16_lba_len(cdb, &block, &n_block); |
3202 | ||
63ccc191 CH |
3203 | if (!unmap || |
3204 | (dev->horkage & ATA_HORKAGE_NOTRIM) || | |
3205 | !ata_id_has_trim(dev->id)) { | |
3206 | fp = 1; | |
3207 | bp = 3; | |
3208 | goto invalid_fld; | |
3209 | } | |
3210 | /* If the request is too large the cmd is invalid */ | |
3211 | if (n_block > 0xffff * trmax) { | |
3212 | fp = 2; | |
3213 | goto invalid_fld; | |
bcfc867d | 3214 | } |
18f0f978 CH |
3215 | |
3216 | /* | |
3217 | * WRITE SAME always has a sector sized buffer as payload, this | |
3218 | * should never be a multiple entry S/G list. | |
3219 | */ | |
3220 | if (!scsi_sg_count(scmd)) | |
bcfc867d | 3221 | goto invalid_param_len; |
18f0f978 | 3222 | |
ef2d7392 ST |
3223 | /* |
3224 | * size must match sector size in bytes | |
3225 | * For DATA SET MANAGEMENT TRIM in ACS-2 nsect (aka count) | |
3226 | * is defined as number of 512 byte blocks to be transferred. | |
3227 | */ | |
87fb6c31 | 3228 | |
63ccc191 CH |
3229 | size = ata_format_dsm_trim_descr(scmd, trmax, block, n_block); |
3230 | if (size != len) | |
3231 | goto invalid_param_len; | |
3232 | ||
3233 | if (ata_ncq_enabled(dev) && ata_fpdma_dsm_supported(dev)) { | |
3234 | /* Newer devices support queued TRIM commands */ | |
3235 | tf->protocol = ATA_PROT_NCQ; | |
3236 | tf->command = ATA_CMD_FPDMA_SEND; | |
3237 | tf->hob_nsect = ATA_SUBCMD_FPDMA_SEND_DSM & 0x1f; | |
4e5b6260 | 3238 | tf->nsect = qc->hw_tag << 3; |
63ccc191 CH |
3239 | tf->hob_feature = (size / 512) >> 8; |
3240 | tf->feature = size / 512; | |
3241 | ||
3242 | tf->auxiliary = 1; | |
3243 | } else { | |
7b203094 | 3244 | tf->protocol = ATA_PROT_DMA; |
63ccc191 CH |
3245 | tf->hob_feature = 0; |
3246 | tf->feature = ATA_DSM_TRIM; | |
3247 | tf->hob_nsect = (size / 512) >> 8; | |
3248 | tf->nsect = size / 512; | |
3249 | tf->command = ATA_CMD_DSM; | |
87fb6c31 MC |
3250 | } |
3251 | ||
18f0f978 CH |
3252 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 | |
3253 | ATA_TFLAG_WRITE; | |
3254 | ||
3255 | ata_qc_set_pc_nbytes(qc); | |
3256 | ||
3257 | return 0; | |
3258 | ||
bcfc867d | 3259 | invalid_fld: |
0df10b84 | 3260 | ata_scsi_set_invalid_field(dev, scmd, fp, bp); |
bcfc867d HR |
3261 | return 1; |
3262 | invalid_param_len: | |
3263 | /* "Parameter list length error" */ | |
3264 | ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
3265 | return 1; | |
3266 | invalid_opcode: | |
3267 | /* "Invalid command operation code" */ | |
3268 | ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x20, 0x0); | |
18f0f978 CH |
3269 | return 1; |
3270 | } | |
3271 | ||
7b203094 ST |
3272 | /** |
3273 | * ata_scsiop_maint_in - Simulate a subset of MAINTENANCE_IN | |
3274 | * @args: device MAINTENANCE_IN data / SCSI command of interest. | |
3275 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
3276 | * | |
3277 | * Yields a subset to satisfy scsi_report_opcode() | |
3278 | * | |
3279 | * LOCKING: | |
3280 | * spin_lock_irqsave(host lock) | |
3281 | */ | |
3282 | static unsigned int ata_scsiop_maint_in(struct ata_scsi_args *args, u8 *rbuf) | |
3283 | { | |
3284 | struct ata_device *dev = args->dev; | |
3285 | u8 *cdb = args->cmd->cmnd; | |
0de55801 | 3286 | u8 supported = 0, cdlp = 0, rwcdlp = 0; |
7b203094 ST |
3287 | unsigned int err = 0; |
3288 | ||
002c4871 | 3289 | if (cdb[2] != 1 && cdb[2] != 3) { |
7b203094 ST |
3290 | ata_dev_warn(dev, "invalid command format %d\n", cdb[2]); |
3291 | err = 2; | |
3292 | goto out; | |
3293 | } | |
002c4871 | 3294 | |
7b203094 ST |
3295 | switch (cdb[3]) { |
3296 | case INQUIRY: | |
3297 | case MODE_SENSE: | |
3298 | case MODE_SENSE_10: | |
3299 | case READ_CAPACITY: | |
3300 | case SERVICE_ACTION_IN_16: | |
3301 | case REPORT_LUNS: | |
3302 | case REQUEST_SENSE: | |
3303 | case SYNCHRONIZE_CACHE: | |
ea045fd3 | 3304 | case SYNCHRONIZE_CACHE_16: |
7b203094 ST |
3305 | case REZERO_UNIT: |
3306 | case SEEK_6: | |
3307 | case SEEK_10: | |
3308 | case TEST_UNIT_READY: | |
3309 | case SEND_DIAGNOSTIC: | |
3310 | case MAINTENANCE_IN: | |
3311 | case READ_6: | |
3312 | case READ_10: | |
7b203094 ST |
3313 | case WRITE_6: |
3314 | case WRITE_10: | |
7b203094 ST |
3315 | case ATA_12: |
3316 | case ATA_16: | |
3317 | case VERIFY: | |
3318 | case VERIFY_16: | |
3319 | case MODE_SELECT: | |
3320 | case MODE_SELECT_10: | |
3321 | case START_STOP: | |
3322 | supported = 3; | |
3323 | break; | |
0de55801 DLM |
3324 | case READ_16: |
3325 | supported = 3; | |
3326 | if (dev->flags & ATA_DFLAG_CDL) { | |
3327 | /* | |
3328 | * CDL read descriptors map to the T2A page, that is, | |
3329 | * rwcdlp = 0x01 and cdlp = 0x01 | |
3330 | */ | |
3331 | rwcdlp = 0x01; | |
3332 | cdlp = 0x01 << 3; | |
3333 | } | |
3334 | break; | |
3335 | case WRITE_16: | |
3336 | supported = 3; | |
3337 | if (dev->flags & ATA_DFLAG_CDL) { | |
3338 | /* | |
3339 | * CDL write descriptors map to the T2B page, that is, | |
3340 | * rwcdlp = 0x01 and cdlp = 0x02 | |
3341 | */ | |
3342 | rwcdlp = 0x01; | |
3343 | cdlp = 0x02 << 3; | |
3344 | } | |
3345 | break; | |
7b203094 ST |
3346 | case ZBC_IN: |
3347 | case ZBC_OUT: | |
3348 | if (ata_id_zoned_cap(dev->id) || | |
3349 | dev->class == ATA_DEV_ZAC) | |
3350 | supported = 3; | |
3351 | break; | |
818831c8 CH |
3352 | case SECURITY_PROTOCOL_IN: |
3353 | case SECURITY_PROTOCOL_OUT: | |
3354 | if (dev->flags & ATA_DFLAG_TRUSTED) | |
3355 | supported = 3; | |
3356 | break; | |
7b203094 ST |
3357 | default: |
3358 | break; | |
3359 | } | |
3360 | out: | |
0de55801 DLM |
3361 | /* One command format */ |
3362 | rbuf[0] = rwcdlp; | |
3363 | rbuf[1] = cdlp | supported; | |
7b203094 ST |
3364 | return err; |
3365 | } | |
3366 | ||
28a3fc22 HR |
3367 | /** |
3368 | * ata_scsi_report_zones_complete - convert ATA output | |
3369 | * @qc: command structure returning the data | |
3370 | * | |
3371 | * Convert T-13 little-endian field representation into | |
3372 | * T-10 big-endian field representation. | |
3373 | * What a mess. | |
3374 | */ | |
3375 | static void ata_scsi_report_zones_complete(struct ata_queued_cmd *qc) | |
3376 | { | |
3377 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3378 | struct sg_mapping_iter miter; | |
3379 | unsigned long flags; | |
3380 | unsigned int bytes = 0; | |
3381 | ||
3382 | sg_miter_start(&miter, scsi_sglist(scmd), scsi_sg_count(scmd), | |
3383 | SG_MITER_TO_SG | SG_MITER_ATOMIC); | |
3384 | ||
3385 | local_irq_save(flags); | |
3386 | while (sg_miter_next(&miter)) { | |
3387 | unsigned int offset = 0; | |
3388 | ||
3389 | if (bytes == 0) { | |
3390 | char *hdr; | |
3391 | u32 list_length; | |
3392 | u64 max_lba, opt_lba; | |
3393 | u16 same; | |
3394 | ||
3395 | /* Swizzle header */ | |
3396 | hdr = miter.addr; | |
3397 | list_length = get_unaligned_le32(&hdr[0]); | |
3398 | same = get_unaligned_le16(&hdr[4]); | |
3399 | max_lba = get_unaligned_le64(&hdr[8]); | |
3400 | opt_lba = get_unaligned_le64(&hdr[16]); | |
3401 | put_unaligned_be32(list_length, &hdr[0]); | |
3402 | hdr[4] = same & 0xf; | |
3403 | put_unaligned_be64(max_lba, &hdr[8]); | |
3404 | put_unaligned_be64(opt_lba, &hdr[16]); | |
3405 | offset += 64; | |
3406 | bytes += 64; | |
3407 | } | |
3408 | while (offset < miter.length) { | |
3409 | char *rec; | |
3410 | u8 cond, type, non_seq, reset; | |
3411 | u64 size, start, wp; | |
3412 | ||
3413 | /* Swizzle zone descriptor */ | |
3414 | rec = miter.addr + offset; | |
3415 | type = rec[0] & 0xf; | |
3416 | cond = (rec[1] >> 4) & 0xf; | |
3417 | non_seq = (rec[1] & 2); | |
3418 | reset = (rec[1] & 1); | |
3419 | size = get_unaligned_le64(&rec[8]); | |
3420 | start = get_unaligned_le64(&rec[16]); | |
3421 | wp = get_unaligned_le64(&rec[24]); | |
3422 | rec[0] = type; | |
3423 | rec[1] = (cond << 4) | non_seq | reset; | |
3424 | put_unaligned_be64(size, &rec[8]); | |
3425 | put_unaligned_be64(start, &rec[16]); | |
3426 | put_unaligned_be64(wp, &rec[24]); | |
3427 | WARN_ON(offset + 64 > miter.length); | |
3428 | offset += 64; | |
3429 | bytes += 64; | |
3430 | } | |
3431 | } | |
3432 | sg_miter_stop(&miter); | |
3433 | local_irq_restore(flags); | |
3434 | ||
3435 | ata_scsi_qc_complete(qc); | |
3436 | } | |
3437 | ||
3438 | static unsigned int ata_scsi_zbc_in_xlat(struct ata_queued_cmd *qc) | |
3439 | { | |
3440 | struct ata_taskfile *tf = &qc->tf; | |
3441 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3442 | const u8 *cdb = scmd->cmnd; | |
3443 | u16 sect, fp = (u16)-1; | |
3444 | u8 sa, options, bp = 0xff; | |
3445 | u64 block; | |
3446 | u32 n_block; | |
3447 | ||
3448 | if (unlikely(scmd->cmd_len < 16)) { | |
3449 | ata_dev_warn(qc->dev, "invalid cdb length %d\n", | |
3450 | scmd->cmd_len); | |
3451 | fp = 15; | |
3452 | goto invalid_fld; | |
3453 | } | |
3454 | scsi_16_lba_len(cdb, &block, &n_block); | |
3455 | if (n_block != scsi_bufflen(scmd)) { | |
3456 | ata_dev_warn(qc->dev, "non-matching transfer count (%d/%d)\n", | |
3457 | n_block, scsi_bufflen(scmd)); | |
3458 | goto invalid_param_len; | |
3459 | } | |
3460 | sa = cdb[1] & 0x1f; | |
3461 | if (sa != ZI_REPORT_ZONES) { | |
3462 | ata_dev_warn(qc->dev, "invalid service action %d\n", sa); | |
3463 | fp = 1; | |
3464 | goto invalid_fld; | |
3465 | } | |
3466 | /* | |
3467 | * ZAC allows only for transfers in 512 byte blocks, | |
3468 | * and uses a 16 bit value for the transfer count. | |
3469 | */ | |
3470 | if ((n_block / 512) > 0xffff || n_block < 512 || (n_block % 512)) { | |
3471 | ata_dev_warn(qc->dev, "invalid transfer count %d\n", n_block); | |
3472 | goto invalid_param_len; | |
3473 | } | |
3474 | sect = n_block / 512; | |
3f17422b | 3475 | options = cdb[14] & 0xbf; |
28a3fc22 HR |
3476 | |
3477 | if (ata_ncq_enabled(qc->dev) && | |
3478 | ata_fpdma_zac_mgmt_in_supported(qc->dev)) { | |
3479 | tf->protocol = ATA_PROT_NCQ; | |
3480 | tf->command = ATA_CMD_FPDMA_RECV; | |
3481 | tf->hob_nsect = ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN & 0x1f; | |
4e5b6260 | 3482 | tf->nsect = qc->hw_tag << 3; |
28a3fc22 HR |
3483 | tf->feature = sect & 0xff; |
3484 | tf->hob_feature = (sect >> 8) & 0xff; | |
3f17422b | 3485 | tf->auxiliary = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES | (options << 8); |
28a3fc22 HR |
3486 | } else { |
3487 | tf->command = ATA_CMD_ZAC_MGMT_IN; | |
3488 | tf->feature = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES; | |
3489 | tf->protocol = ATA_PROT_DMA; | |
3490 | tf->hob_feature = options; | |
3491 | tf->hob_nsect = (sect >> 8) & 0xff; | |
3492 | tf->nsect = sect & 0xff; | |
3493 | } | |
3494 | tf->device = ATA_LBA; | |
3495 | tf->lbah = (block >> 16) & 0xff; | |
3496 | tf->lbam = (block >> 8) & 0xff; | |
3497 | tf->lbal = block & 0xff; | |
3498 | tf->hob_lbah = (block >> 40) & 0xff; | |
3499 | tf->hob_lbam = (block >> 32) & 0xff; | |
3500 | tf->hob_lbal = (block >> 24) & 0xff; | |
3501 | ||
3502 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48; | |
3503 | qc->flags |= ATA_QCFLAG_RESULT_TF; | |
3504 | ||
3505 | ata_qc_set_pc_nbytes(qc); | |
3506 | ||
3507 | qc->complete_fn = ata_scsi_report_zones_complete; | |
3508 | ||
3509 | return 0; | |
3510 | ||
3511 | invalid_fld: | |
3512 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); | |
3513 | return 1; | |
3514 | ||
3515 | invalid_param_len: | |
3516 | /* "Parameter list length error" */ | |
3517 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
3518 | return 1; | |
3519 | } | |
3520 | ||
27708a95 HR |
3521 | static unsigned int ata_scsi_zbc_out_xlat(struct ata_queued_cmd *qc) |
3522 | { | |
3523 | struct ata_taskfile *tf = &qc->tf; | |
3524 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3525 | struct ata_device *dev = qc->dev; | |
3526 | const u8 *cdb = scmd->cmnd; | |
2950cefa | 3527 | u8 all, sa; |
27708a95 HR |
3528 | u64 block; |
3529 | u32 n_block; | |
3530 | u16 fp = (u16)-1; | |
3531 | ||
3532 | if (unlikely(scmd->cmd_len < 16)) { | |
3533 | fp = 15; | |
3534 | goto invalid_fld; | |
3535 | } | |
3536 | ||
3537 | sa = cdb[1] & 0x1f; | |
3538 | if ((sa != ZO_CLOSE_ZONE) && (sa != ZO_FINISH_ZONE) && | |
3539 | (sa != ZO_OPEN_ZONE) && (sa != ZO_RESET_WRITE_POINTER)) { | |
3540 | fp = 1; | |
3541 | goto invalid_fld; | |
3542 | } | |
3543 | ||
3544 | scsi_16_lba_len(cdb, &block, &n_block); | |
3545 | if (n_block) { | |
3546 | /* | |
3547 | * ZAC MANAGEMENT OUT doesn't define any length | |
3548 | */ | |
3549 | goto invalid_param_len; | |
3550 | } | |
27708a95 | 3551 | |
2950cefa | 3552 | all = cdb[14] & 0x1; |
6edf1d4c DLM |
3553 | if (all) { |
3554 | /* | |
3555 | * Ignore the block address (zone ID) as defined by ZBC. | |
3556 | */ | |
3557 | block = 0; | |
3558 | } else if (block >= dev->n_sectors) { | |
b320a0a9 DLM |
3559 | /* |
3560 | * Block must be a valid zone ID (a zone start LBA). | |
3561 | */ | |
3562 | fp = 2; | |
3563 | goto invalid_fld; | |
3564 | } | |
27708a95 | 3565 | |
284b3b77 HR |
3566 | if (ata_ncq_enabled(qc->dev) && |
3567 | ata_fpdma_zac_mgmt_out_supported(qc->dev)) { | |
5b844b63 | 3568 | tf->protocol = ATA_PROT_NCQ_NODATA; |
284b3b77 | 3569 | tf->command = ATA_CMD_NCQ_NON_DATA; |
ee194b75 | 3570 | tf->feature = ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT; |
4e5b6260 | 3571 | tf->nsect = qc->hw_tag << 3; |
2950cefa | 3572 | tf->auxiliary = sa | ((u16)all << 8); |
284b3b77 HR |
3573 | } else { |
3574 | tf->protocol = ATA_PROT_NODATA; | |
3575 | tf->command = ATA_CMD_ZAC_MGMT_OUT; | |
3576 | tf->feature = sa; | |
2950cefa | 3577 | tf->hob_feature = all; |
284b3b77 | 3578 | } |
27708a95 HR |
3579 | tf->lbah = (block >> 16) & 0xff; |
3580 | tf->lbam = (block >> 8) & 0xff; | |
3581 | tf->lbal = block & 0xff; | |
3582 | tf->hob_lbah = (block >> 40) & 0xff; | |
3583 | tf->hob_lbam = (block >> 32) & 0xff; | |
3584 | tf->hob_lbal = (block >> 24) & 0xff; | |
3585 | tf->device = ATA_LBA; | |
3586 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48; | |
3587 | ||
3588 | return 0; | |
3589 | ||
18f0f978 | 3590 | invalid_fld: |
27708a95 HR |
3591 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
3592 | return 1; | |
27708a95 HR |
3593 | invalid_param_len: |
3594 | /* "Parameter list length error" */ | |
3595 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
18f0f978 CH |
3596 | return 1; |
3597 | } | |
3598 | ||
1b26d29c PB |
3599 | /** |
3600 | * ata_mselect_caching - Simulate MODE SELECT for caching info page | |
3601 | * @qc: Storage for translated ATA taskfile | |
3602 | * @buf: input buffer | |
3603 | * @len: number of valid bytes in the input buffer | |
7780081c | 3604 | * @fp: out parameter for the failed field on error |
1b26d29c PB |
3605 | * |
3606 | * Prepare a taskfile to modify caching information for the device. | |
3607 | * | |
3608 | * LOCKING: | |
3609 | * None. | |
3610 | */ | |
3611 | static int ata_mselect_caching(struct ata_queued_cmd *qc, | |
7780081c | 3612 | const u8 *buf, int len, u16 *fp) |
1b26d29c PB |
3613 | { |
3614 | struct ata_taskfile *tf = &qc->tf; | |
3615 | struct ata_device *dev = qc->dev; | |
d7372cb6 | 3616 | u8 mpage[CACHE_MPAGE_LEN]; |
1b26d29c | 3617 | u8 wce; |
7780081c | 3618 | int i; |
1b26d29c PB |
3619 | |
3620 | /* | |
3621 | * The first two bytes of def_cache_mpage are a header, so offsets | |
3622 | * in mpage are off by 2 compared to buf. Same for len. | |
3623 | */ | |
3624 | ||
7780081c | 3625 | if (len != CACHE_MPAGE_LEN - 2) { |
da299470 | 3626 | *fp = min(len, CACHE_MPAGE_LEN - 2); |
1b26d29c | 3627 | return -EINVAL; |
7780081c | 3628 | } |
1b26d29c PB |
3629 | |
3630 | wce = buf[0] & (1 << 2); | |
3631 | ||
3632 | /* | |
3633 | * Check that read-only bits are not modified. | |
3634 | */ | |
3635 | ata_msense_caching(dev->id, mpage, false); | |
7780081c HR |
3636 | for (i = 0; i < CACHE_MPAGE_LEN - 2; i++) { |
3637 | if (i == 0) | |
3638 | continue; | |
3639 | if (mpage[i + 2] != buf[i]) { | |
3640 | *fp = i; | |
3641 | return -EINVAL; | |
3642 | } | |
3643 | } | |
1b26d29c PB |
3644 | |
3645 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; | |
3646 | tf->protocol = ATA_PROT_NODATA; | |
3647 | tf->nsect = 0; | |
3648 | tf->command = ATA_CMD_SET_FEATURES; | |
3649 | tf->feature = wce ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF; | |
3650 | return 0; | |
3651 | } | |
3652 | ||
df60f9c6 DLM |
3653 | /* |
3654 | * Simulate MODE SELECT control mode page, sub-page 0. | |
06dbde5f | 3655 | */ |
df60f9c6 DLM |
3656 | static int ata_mselect_control_spg0(struct ata_queued_cmd *qc, |
3657 | const u8 *buf, int len, u16 *fp) | |
06dbde5f HR |
3658 | { |
3659 | struct ata_device *dev = qc->dev; | |
d7372cb6 | 3660 | u8 mpage[CONTROL_MPAGE_LEN]; |
06dbde5f | 3661 | u8 d_sense; |
7780081c | 3662 | int i; |
06dbde5f HR |
3663 | |
3664 | /* | |
3665 | * The first two bytes of def_control_mpage are a header, so offsets | |
3666 | * in mpage are off by 2 compared to buf. Same for len. | |
3667 | */ | |
3668 | ||
7780081c | 3669 | if (len != CONTROL_MPAGE_LEN - 2) { |
da299470 | 3670 | *fp = min(len, CONTROL_MPAGE_LEN - 2); |
06dbde5f | 3671 | return -EINVAL; |
7780081c | 3672 | } |
06dbde5f HR |
3673 | |
3674 | d_sense = buf[0] & (1 << 2); | |
3675 | ||
3676 | /* | |
3677 | * Check that read-only bits are not modified. | |
3678 | */ | |
673b2fe6 | 3679 | ata_msense_control_spg0(dev, mpage, false); |
7780081c HR |
3680 | for (i = 0; i < CONTROL_MPAGE_LEN - 2; i++) { |
3681 | if (i == 0) | |
3682 | continue; | |
3683 | if (mpage[2 + i] != buf[i]) { | |
3684 | *fp = i; | |
3685 | return -EINVAL; | |
3686 | } | |
3687 | } | |
06dbde5f HR |
3688 | if (d_sense & (1 << 2)) |
3689 | dev->flags |= ATA_DFLAG_D_SENSE; | |
3690 | else | |
3691 | dev->flags &= ~ATA_DFLAG_D_SENSE; | |
06dbde5f HR |
3692 | return 0; |
3693 | } | |
3694 | ||
df60f9c6 DLM |
3695 | /* |
3696 | * Translate MODE SELECT control mode page, sub-pages f2h (ATA feature mode | |
3697 | * page) into a SET FEATURES command. | |
3698 | */ | |
3699 | static unsigned int ata_mselect_control_ata_feature(struct ata_queued_cmd *qc, | |
3700 | const u8 *buf, int len, | |
3701 | u16 *fp) | |
3702 | { | |
3703 | struct ata_device *dev = qc->dev; | |
3704 | struct ata_taskfile *tf = &qc->tf; | |
3705 | u8 cdl_action; | |
3706 | ||
3707 | /* | |
3708 | * The first four bytes of ATA Feature Control mode page are a header, | |
3709 | * so offsets in mpage are off by 4 compared to buf. Same for len. | |
3710 | */ | |
3711 | if (len != ATA_FEATURE_SUB_MPAGE_LEN - 4) { | |
3712 | *fp = min(len, ATA_FEATURE_SUB_MPAGE_LEN - 4); | |
3713 | return -EINVAL; | |
3714 | } | |
3715 | ||
3716 | /* Check cdl_ctrl */ | |
3717 | switch (buf[0] & 0x03) { | |
3718 | case 0: | |
3719 | /* Disable CDL */ | |
3720 | cdl_action = 0; | |
3721 | dev->flags &= ~ATA_DFLAG_CDL_ENABLED; | |
3722 | break; | |
3723 | case 0x02: | |
3724 | /* Enable CDL T2A/T2B: NCQ priority must be disabled */ | |
3725 | if (dev->flags & ATA_DFLAG_NCQ_PRIO_ENABLED) { | |
3726 | ata_dev_err(dev, | |
3727 | "NCQ priority must be disabled to enable CDL\n"); | |
3728 | return -EINVAL; | |
3729 | } | |
3730 | cdl_action = 1; | |
3731 | dev->flags |= ATA_DFLAG_CDL_ENABLED; | |
3732 | break; | |
3733 | default: | |
3734 | *fp = 0; | |
3735 | return -EINVAL; | |
3736 | } | |
3737 | ||
3738 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; | |
3739 | tf->protocol = ATA_PROT_NODATA; | |
3740 | tf->command = ATA_CMD_SET_FEATURES; | |
3741 | tf->feature = SETFEATURES_CDL; | |
3742 | tf->nsect = cdl_action; | |
3743 | ||
3744 | return 1; | |
3745 | } | |
3746 | ||
3747 | /** | |
3748 | * ata_mselect_control - Simulate MODE SELECT for control page | |
3749 | * @qc: Storage for translated ATA taskfile | |
401f8ef3 | 3750 | * @spg: target sub-page of the control page |
df60f9c6 DLM |
3751 | * @buf: input buffer |
3752 | * @len: number of valid bytes in the input buffer | |
3753 | * @fp: out parameter for the failed field on error | |
3754 | * | |
3755 | * Prepare a taskfile to modify caching information for the device. | |
3756 | * | |
3757 | * LOCKING: | |
3758 | * None. | |
3759 | */ | |
3760 | static int ata_mselect_control(struct ata_queued_cmd *qc, u8 spg, | |
3761 | const u8 *buf, int len, u16 *fp) | |
3762 | { | |
3763 | switch (spg) { | |
3764 | case 0: | |
3765 | return ata_mselect_control_spg0(qc, buf, len, fp); | |
3766 | case ATA_FEATURE_SUB_MPAGE: | |
3767 | return ata_mselect_control_ata_feature(qc, buf, len, fp); | |
3768 | default: | |
3769 | return -EINVAL; | |
3770 | } | |
3771 | } | |
3772 | ||
1b26d29c | 3773 | /** |
01efd600 | 3774 | * ata_scsi_mode_select_xlat - Simulate MODE SELECT 6, 10 commands |
1b26d29c PB |
3775 | * @qc: Storage for translated ATA taskfile |
3776 | * | |
3777 | * Converts a MODE SELECT command to an ATA SET FEATURES taskfile. | |
3778 | * Assume this is invoked for direct access devices (e.g. disks) only. | |
3779 | * There should be no block descriptor for other device types. | |
3780 | * | |
3781 | * LOCKING: | |
3782 | * spin_lock_irqsave(host lock) | |
3783 | */ | |
3784 | static unsigned int ata_scsi_mode_select_xlat(struct ata_queued_cmd *qc) | |
3785 | { | |
3786 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3787 | const u8 *cdb = scmd->cmnd; | |
1b26d29c PB |
3788 | u8 pg, spg; |
3789 | unsigned six_byte, pg_len, hdr_len, bd_len; | |
df60f9c6 | 3790 | int len, ret; |
7780081c HR |
3791 | u16 fp = (u16)-1; |
3792 | u8 bp = 0xff; | |
f650ef61 YB |
3793 | u8 buffer[64]; |
3794 | const u8 *p = buffer; | |
1b26d29c | 3795 | |
1b26d29c PB |
3796 | six_byte = (cdb[0] == MODE_SELECT); |
3797 | if (six_byte) { | |
bcfc867d HR |
3798 | if (scmd->cmd_len < 5) { |
3799 | fp = 4; | |
1b26d29c | 3800 | goto invalid_fld; |
bcfc867d | 3801 | } |
1b26d29c PB |
3802 | |
3803 | len = cdb[4]; | |
3804 | hdr_len = 4; | |
3805 | } else { | |
bcfc867d HR |
3806 | if (scmd->cmd_len < 9) { |
3807 | fp = 8; | |
1b26d29c | 3808 | goto invalid_fld; |
bcfc867d | 3809 | } |
1b26d29c | 3810 | |
261e1507 | 3811 | len = get_unaligned_be16(&cdb[7]); |
1b26d29c PB |
3812 | hdr_len = 8; |
3813 | } | |
3814 | ||
3815 | /* We only support PF=1, SP=0. */ | |
bcfc867d HR |
3816 | if ((cdb[1] & 0x11) != 0x10) { |
3817 | fp = 1; | |
0df10b84 | 3818 | bp = (cdb[1] & 0x01) ? 1 : 5; |
1b26d29c | 3819 | goto invalid_fld; |
bcfc867d | 3820 | } |
1b26d29c PB |
3821 | |
3822 | /* Test early for possible overrun. */ | |
3823 | if (!scsi_sg_count(scmd) || scsi_sglist(scmd)->length < len) | |
3824 | goto invalid_param_len; | |
3825 | ||
1b26d29c PB |
3826 | /* Move past header and block descriptors. */ |
3827 | if (len < hdr_len) | |
3828 | goto invalid_param_len; | |
3829 | ||
f650ef61 YB |
3830 | if (!sg_copy_to_buffer(scsi_sglist(scmd), scsi_sg_count(scmd), |
3831 | buffer, sizeof(buffer))) | |
3832 | goto invalid_param_len; | |
3833 | ||
1b26d29c PB |
3834 | if (six_byte) |
3835 | bd_len = p[3]; | |
3836 | else | |
261e1507 | 3837 | bd_len = get_unaligned_be16(&p[6]); |
1b26d29c PB |
3838 | |
3839 | len -= hdr_len; | |
3840 | p += hdr_len; | |
3841 | if (len < bd_len) | |
3842 | goto invalid_param_len; | |
7780081c HR |
3843 | if (bd_len != 0 && bd_len != 8) { |
3844 | fp = (six_byte) ? 3 : 6; | |
3845 | fp += bd_len + hdr_len; | |
1b26d29c | 3846 | goto invalid_param; |
7780081c | 3847 | } |
1b26d29c PB |
3848 | |
3849 | len -= bd_len; | |
3850 | p += bd_len; | |
3851 | if (len == 0) | |
3852 | goto skip; | |
3853 | ||
3854 | /* Parse both possible formats for the mode page headers. */ | |
3855 | pg = p[0] & 0x3f; | |
3856 | if (p[0] & 0x40) { | |
3857 | if (len < 4) | |
3858 | goto invalid_param_len; | |
3859 | ||
3860 | spg = p[1]; | |
261e1507 | 3861 | pg_len = get_unaligned_be16(&p[2]); |
1b26d29c PB |
3862 | p += 4; |
3863 | len -= 4; | |
3864 | } else { | |
3865 | if (len < 2) | |
3866 | goto invalid_param_len; | |
3867 | ||
3868 | spg = 0; | |
3869 | pg_len = p[1]; | |
3870 | p += 2; | |
3871 | len -= 2; | |
3872 | } | |
3873 | ||
3874 | /* | |
df60f9c6 DLM |
3875 | * Supported subpages: all subpages and ATA feature sub-page f2h of |
3876 | * the control page. | |
1b26d29c | 3877 | */ |
df60f9c6 DLM |
3878 | if (spg) { |
3879 | switch (spg) { | |
3880 | case ALL_SUB_MPAGES: | |
3881 | /* All subpages is not supported for the control page */ | |
3882 | if (pg == CONTROL_MPAGE) { | |
3883 | fp = (p[0] & 0x40) ? 1 : 0; | |
3884 | fp += hdr_len + bd_len; | |
3885 | goto invalid_param; | |
3886 | } | |
3887 | break; | |
3888 | case ATA_FEATURE_SUB_MPAGE: | |
3889 | if (qc->dev->flags & ATA_DFLAG_CDL && | |
3890 | pg == CONTROL_MPAGE) | |
3891 | break; | |
3892 | fallthrough; | |
3893 | default: | |
3894 | fp = (p[0] & 0x40) ? 1 : 0; | |
3895 | fp += hdr_len + bd_len; | |
3896 | goto invalid_param; | |
3897 | } | |
7780081c | 3898 | } |
1b26d29c PB |
3899 | if (pg_len > len) |
3900 | goto invalid_param_len; | |
3901 | ||
3902 | switch (pg) { | |
3903 | case CACHE_MPAGE: | |
7780081c HR |
3904 | if (ata_mselect_caching(qc, p, pg_len, &fp) < 0) { |
3905 | fp += hdr_len + bd_len; | |
1b26d29c | 3906 | goto invalid_param; |
7780081c | 3907 | } |
1b26d29c | 3908 | break; |
06dbde5f | 3909 | case CONTROL_MPAGE: |
df60f9c6 DLM |
3910 | ret = ata_mselect_control(qc, spg, p, pg_len, &fp); |
3911 | if (ret < 0) { | |
7780081c | 3912 | fp += hdr_len + bd_len; |
06dbde5f | 3913 | goto invalid_param; |
7780081c | 3914 | } |
df60f9c6 DLM |
3915 | if (!ret) |
3916 | goto skip; /* No ATA command to send */ | |
1b26d29c | 3917 | break; |
df60f9c6 DLM |
3918 | default: |
3919 | /* Invalid page code */ | |
7780081c | 3920 | fp = bd_len + hdr_len; |
1b26d29c PB |
3921 | goto invalid_param; |
3922 | } | |
3923 | ||
3924 | /* | |
3925 | * Only one page has changeable data, so we only support setting one | |
3926 | * page at a time. | |
3927 | */ | |
3928 | if (len > pg_len) | |
3929 | goto invalid_param; | |
3930 | ||
3931 | return 0; | |
3932 | ||
3933 | invalid_fld: | |
0df10b84 | 3934 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); |
1b26d29c PB |
3935 | return 1; |
3936 | ||
3937 | invalid_param: | |
7780081c | 3938 | ata_scsi_set_invalid_parameter(qc->dev, scmd, fp); |
1b26d29c PB |
3939 | return 1; |
3940 | ||
3941 | invalid_param_len: | |
3942 | /* "Parameter list length error" */ | |
06dbde5f | 3943 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); |
1b26d29c PB |
3944 | return 1; |
3945 | ||
3946 | skip: | |
3947 | scmd->result = SAM_STAT_GOOD; | |
3948 | return 1; | |
3949 | } | |
3950 | ||
818831c8 CH |
3951 | static u8 ata_scsi_trusted_op(u32 len, bool send, bool dma) |
3952 | { | |
3953 | if (len == 0) | |
3954 | return ATA_CMD_TRUSTED_NONDATA; | |
3955 | else if (send) | |
3956 | return dma ? ATA_CMD_TRUSTED_SND_DMA : ATA_CMD_TRUSTED_SND; | |
3957 | else | |
3958 | return dma ? ATA_CMD_TRUSTED_RCV_DMA : ATA_CMD_TRUSTED_RCV; | |
3959 | } | |
3960 | ||
3961 | static unsigned int ata_scsi_security_inout_xlat(struct ata_queued_cmd *qc) | |
3962 | { | |
3963 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3964 | const u8 *cdb = scmd->cmnd; | |
3965 | struct ata_taskfile *tf = &qc->tf; | |
3966 | u8 secp = cdb[1]; | |
3967 | bool send = (cdb[0] == SECURITY_PROTOCOL_OUT); | |
3968 | u16 spsp = get_unaligned_be16(&cdb[2]); | |
3969 | u32 len = get_unaligned_be32(&cdb[6]); | |
3970 | bool dma = !(qc->dev->flags & ATA_DFLAG_PIO); | |
3971 | ||
3972 | /* | |
3973 | * We don't support the ATA "security" protocol. | |
3974 | */ | |
3975 | if (secp == 0xef) { | |
3976 | ata_scsi_set_invalid_field(qc->dev, scmd, 1, 0); | |
3977 | return 1; | |
3978 | } | |
3979 | ||
3980 | if (cdb[4] & 7) { /* INC_512 */ | |
3981 | if (len > 0xffff) { | |
3982 | ata_scsi_set_invalid_field(qc->dev, scmd, 6, 0); | |
3983 | return 1; | |
3984 | } | |
3985 | } else { | |
3986 | if (len > 0x01fffe00) { | |
3987 | ata_scsi_set_invalid_field(qc->dev, scmd, 6, 0); | |
3988 | return 1; | |
3989 | } | |
3990 | ||
3991 | /* convert to the sector-based ATA addressing */ | |
3992 | len = (len + 511) / 512; | |
3993 | } | |
3994 | ||
3995 | tf->protocol = dma ? ATA_PROT_DMA : ATA_PROT_PIO; | |
3996 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR | ATA_TFLAG_LBA; | |
3997 | if (send) | |
3998 | tf->flags |= ATA_TFLAG_WRITE; | |
3999 | tf->command = ata_scsi_trusted_op(len, send, dma); | |
4000 | tf->feature = secp; | |
4001 | tf->lbam = spsp & 0xff; | |
4002 | tf->lbah = spsp >> 8; | |
4003 | ||
4004 | if (len) { | |
4005 | tf->nsect = len & 0xff; | |
4006 | tf->lbal = len >> 8; | |
4007 | } else { | |
4008 | if (!send) | |
4009 | tf->lbah = (1 << 7); | |
4010 | } | |
4011 | ||
4012 | ata_qc_set_pc_nbytes(qc); | |
4013 | return 0; | |
4014 | } | |
4015 | ||
b1ffbf85 MI |
4016 | /** |
4017 | * ata_scsi_var_len_cdb_xlat - SATL variable length CDB to Handler | |
4018 | * @qc: Command to be translated | |
4019 | * | |
4020 | * Translate a SCSI variable length CDB to specified commands. | |
4021 | * It checks a service action value in CDB to call corresponding handler. | |
4022 | * | |
4023 | * RETURNS: | |
4024 | * Zero on success, non-zero on failure | |
4025 | * | |
4026 | */ | |
4027 | static unsigned int ata_scsi_var_len_cdb_xlat(struct ata_queued_cmd *qc) | |
4028 | { | |
4029 | struct scsi_cmnd *scmd = qc->scsicmd; | |
4030 | const u8 *cdb = scmd->cmnd; | |
4031 | const u16 sa = get_unaligned_be16(&cdb[8]); | |
4032 | ||
4033 | /* | |
4034 | * if service action represents a ata pass-thru(32) command, | |
4035 | * then pass it to ata_scsi_pass_thru handler. | |
4036 | */ | |
4037 | if (sa == ATA_32) | |
4038 | return ata_scsi_pass_thru(qc); | |
4039 | ||
b1ffbf85 MI |
4040 | /* unsupported service action */ |
4041 | return 1; | |
4042 | } | |
4043 | ||
1da177e4 LT |
4044 | /** |
4045 | * ata_get_xlat_func - check if SCSI to ATA translation is possible | |
4046 | * @dev: ATA device | |
4047 | * @cmd: SCSI command opcode to consider | |
4048 | * | |
4049 | * Look up the SCSI command given, and determine whether the | |
4050 | * SCSI command is to be translated or simulated. | |
4051 | * | |
4052 | * RETURNS: | |
4053 | * Pointer to translation function if possible, %NULL if not. | |
4054 | */ | |
4055 | ||
4056 | static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd) | |
4057 | { | |
4058 | switch (cmd) { | |
4059 | case READ_6: | |
4060 | case READ_10: | |
4061 | case READ_16: | |
4062 | ||
4063 | case WRITE_6: | |
4064 | case WRITE_10: | |
4065 | case WRITE_16: | |
4066 | return ata_scsi_rw_xlat; | |
4067 | ||
0cdd6eb7 | 4068 | case WRITE_SAME_16: |
18f0f978 CH |
4069 | return ata_scsi_write_same_xlat; |
4070 | ||
1da177e4 | 4071 | case SYNCHRONIZE_CACHE: |
ea045fd3 | 4072 | case SYNCHRONIZE_CACHE_16: |
1da177e4 LT |
4073 | if (ata_try_flush_cache(dev)) |
4074 | return ata_scsi_flush_xlat; | |
4075 | break; | |
4076 | ||
4077 | case VERIFY: | |
4078 | case VERIFY_16: | |
4079 | return ata_scsi_verify_xlat; | |
b095518e JG |
4080 | |
4081 | case ATA_12: | |
4082 | case ATA_16: | |
4083 | return ata_scsi_pass_thru; | |
da61396d | 4084 | |
b1ffbf85 MI |
4085 | case VARIABLE_LENGTH_CMD: |
4086 | return ata_scsi_var_len_cdb_xlat; | |
4087 | ||
1b26d29c PB |
4088 | case MODE_SELECT: |
4089 | case MODE_SELECT_10: | |
4090 | return ata_scsi_mode_select_xlat; | |
1b26d29c | 4091 | |
28a3fc22 HR |
4092 | case ZBC_IN: |
4093 | return ata_scsi_zbc_in_xlat; | |
4094 | ||
27708a95 HR |
4095 | case ZBC_OUT: |
4096 | return ata_scsi_zbc_out_xlat; | |
4097 | ||
818831c8 CH |
4098 | case SECURITY_PROTOCOL_IN: |
4099 | case SECURITY_PROTOCOL_OUT: | |
4100 | if (!(dev->flags & ATA_DFLAG_TRUSTED)) | |
4101 | break; | |
4102 | return ata_scsi_security_inout_xlat; | |
4103 | ||
972dcafb DG |
4104 | case START_STOP: |
4105 | return ata_scsi_start_stop_xlat; | |
1da177e4 LT |
4106 | } |
4107 | ||
4108 | return NULL; | |
4109 | } | |
4110 | ||
15964ff7 | 4111 | int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, struct ata_device *dev) |
eb3f0f9c | 4112 | { |
e20e81a2 | 4113 | struct ata_port *ap = dev->link->ap; |
baf4fdfa ML |
4114 | u8 scsi_op = scmd->cmnd[0]; |
4115 | ata_xlat_func_t xlat_func; | |
84eac327 | 4116 | |
e20e81a2 NC |
4117 | /* |
4118 | * scsi_queue_rq() will defer commands if scsi_host_in_recovery(). | |
4119 | * However, this check is done without holding the ap->lock (a libata | |
4120 | * specific lock), so we can have received an error irq since then, | |
4121 | * therefore we must check if EH is pending, while holding ap->lock. | |
4122 | */ | |
4123 | if (ap->pflags & (ATA_PFLAG_EH_PENDING | ATA_PFLAG_EH_IN_PROGRESS)) | |
4124 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
4125 | ||
84eac327 WH |
4126 | if (unlikely(!scmd->cmd_len)) |
4127 | goto bad_cdb_len; | |
2115ea94 | 4128 | |
9162c657 | 4129 | if (dev->class == ATA_DEV_ATA || dev->class == ATA_DEV_ZAC) { |
84eac327 | 4130 | if (unlikely(scmd->cmd_len > dev->cdb_len)) |
baf4fdfa | 4131 | goto bad_cdb_len; |
eb3f0f9c | 4132 | |
baf4fdfa | 4133 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
84eac327 WH |
4134 | } else if (likely((scsi_op != ATA_16) || !atapi_passthru16)) { |
4135 | /* relay SCSI command to ATAPI device */ | |
4136 | int len = COMMAND_SIZE(scsi_op); | |
baf4fdfa | 4137 | |
84eac327 WH |
4138 | if (unlikely(len > scmd->cmd_len || |
4139 | len > dev->cdb_len || | |
4140 | scmd->cmd_len > ATAPI_CDB_LEN)) | |
4141 | goto bad_cdb_len; | |
baf4fdfa | 4142 | |
84eac327 WH |
4143 | xlat_func = atapi_xlat; |
4144 | } else { | |
4145 | /* ATA_16 passthru, treat as an ATA command */ | |
4146 | if (unlikely(scmd->cmd_len > 16)) | |
4147 | goto bad_cdb_len; | |
baf4fdfa | 4148 | |
84eac327 | 4149 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
baf4fdfa ML |
4150 | } |
4151 | ||
4152 | if (xlat_func) | |
84eac327 | 4153 | return ata_scsi_translate(dev, scmd, xlat_func); |
2115ea94 | 4154 | |
84eac327 WH |
4155 | ata_scsi_simulate(dev, scmd); |
4156 | ||
4157 | return 0; | |
baf4fdfa ML |
4158 | |
4159 | bad_cdb_len: | |
baf4fdfa | 4160 | scmd->result = DID_ERROR << 16; |
58bf201d | 4161 | scsi_done(scmd); |
baf4fdfa | 4162 | return 0; |
eb3f0f9c BK |
4163 | } |
4164 | ||
1da177e4 LT |
4165 | /** |
4166 | * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device | |
23e701e6 | 4167 | * @shost: SCSI host of command to be sent |
1da177e4 | 4168 | * @cmd: SCSI command to be sent |
1da177e4 LT |
4169 | * |
4170 | * In some cases, this function translates SCSI commands into | |
4171 | * ATA taskfiles, and queues the taskfiles to be sent to | |
4172 | * hardware. In other cases, this function simulates a | |
4173 | * SCSI device by evaluating and responding to certain | |
4174 | * SCSI commands. This creates the overall effect of | |
4175 | * ATA and ATAPI devices appearing as SCSI devices. | |
4176 | * | |
4177 | * LOCKING: | |
23e701e6 | 4178 | * ATA host lock |
1da177e4 LT |
4179 | * |
4180 | * RETURNS: | |
2115ea94 TH |
4181 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
4182 | * 0 otherwise. | |
1da177e4 | 4183 | */ |
23e701e6 | 4184 | int ata_scsi_queuecmd(struct Scsi_Host *shost, struct scsi_cmnd *cmd) |
1da177e4 LT |
4185 | { |
4186 | struct ata_port *ap; | |
4187 | struct ata_device *dev; | |
4188 | struct scsi_device *scsidev = cmd->device; | |
2115ea94 | 4189 | int rc = 0; |
23e701e6 | 4190 | unsigned long irq_flags; |
1da177e4 | 4191 | |
35bb94b1 | 4192 | ap = ata_shost_to_port(shost); |
005a5a06 | 4193 | |
23e701e6 | 4194 | spin_lock_irqsave(ap->lock, irq_flags); |
1da177e4 | 4195 | |
1da177e4 | 4196 | dev = ata_scsi_find_dev(ap, scsidev); |
eb3f0f9c | 4197 | if (likely(dev)) |
b27dcfb0 | 4198 | rc = __ata_scsi_queuecmd(cmd, dev); |
eb3f0f9c | 4199 | else { |
1da177e4 | 4200 | cmd->result = (DID_BAD_TARGET << 16); |
58bf201d | 4201 | scsi_done(cmd); |
1da177e4 LT |
4202 | } |
4203 | ||
23e701e6 JG |
4204 | spin_unlock_irqrestore(ap->lock, irq_flags); |
4205 | ||
2115ea94 | 4206 | return rc; |
1da177e4 | 4207 | } |
a52fbcfc | 4208 | EXPORT_SYMBOL_GPL(ata_scsi_queuecmd); |
1da177e4 LT |
4209 | |
4210 | /** | |
4211 | * ata_scsi_simulate - simulate SCSI command on ATA device | |
c893a3ae | 4212 | * @dev: the target device |
1da177e4 | 4213 | * @cmd: SCSI command being sent to device. |
1da177e4 LT |
4214 | * |
4215 | * Interprets and directly executes a select list of SCSI commands | |
4216 | * that can be handled internally. | |
4217 | * | |
4218 | * LOCKING: | |
cca3974e | 4219 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
4220 | */ |
4221 | ||
b27dcfb0 | 4222 | void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd) |
1da177e4 LT |
4223 | { |
4224 | struct ata_scsi_args args; | |
057ace5e | 4225 | const u8 *scsicmd = cmd->cmnd; |
45394145 | 4226 | u8 tmp8; |
1da177e4 | 4227 | |
9a3dccc4 TH |
4228 | args.dev = dev; |
4229 | args.id = dev->id; | |
1da177e4 | 4230 | args.cmd = cmd; |
1da177e4 LT |
4231 | |
4232 | switch(scsicmd[0]) { | |
2dcb407e | 4233 | case INQUIRY: |
bcfc867d | 4234 | if (scsicmd[1] & 2) /* is CmdDt set? */ |
8fc6c065 | 4235 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e JG |
4236 | else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */ |
4237 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std); | |
4238 | else switch (scsicmd[2]) { | |
4239 | case 0x00: | |
4240 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00); | |
1da177e4 | 4241 | break; |
2dcb407e JG |
4242 | case 0x80: |
4243 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80); | |
1da177e4 | 4244 | break; |
2dcb407e JG |
4245 | case 0x83: |
4246 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83); | |
1da177e4 | 4247 | break; |
2dcb407e JG |
4248 | case 0x89: |
4249 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89); | |
4250 | break; | |
18f0f978 CH |
4251 | case 0xb0: |
4252 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b0); | |
4253 | break; | |
1e9dbc92 MW |
4254 | case 0xb1: |
4255 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1); | |
4256 | break; | |
02e0a604 MP |
4257 | case 0xb2: |
4258 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b2); | |
4259 | break; | |
6d1003ae | 4260 | case 0xb6: |
fe22e1c2 | 4261 | if (dev->flags & ATA_DFLAG_ZAC) |
6d1003ae | 4262 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b6); |
fe22e1c2 DLM |
4263 | else |
4264 | ata_scsi_set_invalid_field(dev, cmd, 2, 0xff); | |
4265 | break; | |
4266 | case 0xb9: | |
4267 | if (dev->cpr_log) | |
4268 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b9); | |
4269 | else | |
4270 | ata_scsi_set_invalid_field(dev, cmd, 2, 0xff); | |
4271 | break; | |
2dcb407e | 4272 | default: |
8fc6c065 | 4273 | ata_scsi_set_invalid_field(dev, cmd, 2, 0xff); |
1da177e4 | 4274 | break; |
2dcb407e JG |
4275 | } |
4276 | break; | |
4277 | ||
4278 | case MODE_SENSE: | |
4279 | case MODE_SENSE_10: | |
4280 | ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense); | |
4281 | break; | |
4282 | ||
2dcb407e JG |
4283 | case READ_CAPACITY: |
4284 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); | |
4285 | break; | |
4286 | ||
eb846d9f | 4287 | case SERVICE_ACTION_IN_16: |
2dcb407e | 4288 | if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16) |
1da177e4 | 4289 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
2dcb407e | 4290 | else |
8fc6c065 | 4291 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e | 4292 | break; |
1da177e4 | 4293 | |
2dcb407e JG |
4294 | case REPORT_LUNS: |
4295 | ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns); | |
4296 | break; | |
1da177e4 | 4297 | |
2dcb407e | 4298 | case REQUEST_SENSE: |
06dbde5f | 4299 | ata_scsi_set_sense(dev, cmd, 0, 0, 0); |
2dcb407e | 4300 | break; |
1da177e4 | 4301 | |
2dcb407e JG |
4302 | /* if we reach this, then writeback caching is disabled, |
4303 | * turning this into a no-op. | |
4304 | */ | |
4305 | case SYNCHRONIZE_CACHE: | |
ea045fd3 | 4306 | case SYNCHRONIZE_CACHE_16: |
df561f66 | 4307 | fallthrough; |
2dcb407e JG |
4308 | |
4309 | /* no-op's, complete with success */ | |
4310 | case REZERO_UNIT: | |
4311 | case SEEK_6: | |
4312 | case SEEK_10: | |
4313 | case TEST_UNIT_READY: | |
2dcb407e | 4314 | break; |
45394145 | 4315 | |
2dcb407e JG |
4316 | case SEND_DIAGNOSTIC: |
4317 | tmp8 = scsicmd[1] & ~(1 << 3); | |
a0c0b0e9 | 4318 | if (tmp8 != 0x4 || scsicmd[3] || scsicmd[4]) |
8fc6c065 | 4319 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e | 4320 | break; |
1da177e4 | 4321 | |
7b203094 | 4322 | case MAINTENANCE_IN: |
3ef60092 | 4323 | if ((scsicmd[1] & 0x1f) == MI_REPORT_SUPPORTED_OPERATION_CODES) |
7b203094 ST |
4324 | ata_scsi_rbuf_fill(&args, ata_scsiop_maint_in); |
4325 | else | |
8fc6c065 | 4326 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
7b203094 ST |
4327 | break; |
4328 | ||
2dcb407e JG |
4329 | /* all other commands */ |
4330 | default: | |
06dbde5f | 4331 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x20, 0x0); |
2dcb407e | 4332 | /* "Invalid command operation code" */ |
2dcb407e | 4333 | break; |
1da177e4 | 4334 | } |
8fc6c065 | 4335 | |
58bf201d | 4336 | scsi_done(cmd); |
1da177e4 LT |
4337 | } |
4338 | ||
25df73d9 | 4339 | int ata_scsi_add_hosts(struct ata_host *host, const struct scsi_host_template *sht) |
f3187195 TH |
4340 | { |
4341 | int i, rc; | |
4342 | ||
4343 | for (i = 0; i < host->n_ports; i++) { | |
4344 | struct ata_port *ap = host->ports[i]; | |
4345 | struct Scsi_Host *shost; | |
4346 | ||
4347 | rc = -ENOMEM; | |
4348 | shost = scsi_host_alloc(sht, sizeof(struct ata_port *)); | |
4349 | if (!shost) | |
4350 | goto err_alloc; | |
4351 | ||
9ee4f393 | 4352 | shost->eh_noresume = 1; |
f3187195 TH |
4353 | *(struct ata_port **)&shost->hostdata[0] = ap; |
4354 | ap->scsi_host = shost; | |
4355 | ||
d9027470 | 4356 | shost->transportt = ata_scsi_transport_template; |
f3187195 TH |
4357 | shost->unique_id = ap->print_id; |
4358 | shost->max_id = 16; | |
4359 | shost->max_lun = 1; | |
4360 | shost->max_channel = 1; | |
b1ffbf85 | 4361 | shost->max_cmd_len = 32; |
f3187195 | 4362 | |
31cc23b3 TH |
4363 | /* Schedule policy is determined by ->qc_defer() |
4364 | * callback and it needs to see every deferred qc. | |
4365 | * Set host_blocked to 1 to prevent SCSI midlayer from | |
4366 | * automatically deferring requests. | |
4367 | */ | |
4368 | shost->max_host_blocked = 1; | |
4369 | ||
1d72f7ae | 4370 | rc = scsi_add_host_with_dma(shost, &ap->tdev, ap->host->dev); |
f3187195 | 4371 | if (rc) |
1d72f7ae | 4372 | goto err_alloc; |
f3187195 TH |
4373 | } |
4374 | ||
4375 | return 0; | |
4376 | ||
f3187195 TH |
4377 | err_alloc: |
4378 | while (--i >= 0) { | |
4379 | struct Scsi_Host *shost = host->ports[i]->scsi_host; | |
4380 | ||
1d72f7ae | 4381 | /* scsi_host_put() is in ata_devres_release() */ |
f3187195 | 4382 | scsi_remove_host(shost); |
f3187195 TH |
4383 | } |
4384 | return rc; | |
4385 | } | |
4386 | ||
45b8084f LW |
4387 | #ifdef CONFIG_OF |
4388 | static void ata_scsi_assign_ofnode(struct ata_device *dev, struct ata_port *ap) | |
4389 | { | |
4390 | struct scsi_device *sdev = dev->sdev; | |
4391 | struct device *d = ap->host->dev; | |
4392 | struct device_node *np = d->of_node; | |
4393 | struct device_node *child; | |
4394 | ||
4395 | for_each_available_child_of_node(np, child) { | |
4396 | int ret; | |
4397 | u32 val; | |
4398 | ||
4399 | ret = of_property_read_u32(child, "reg", &val); | |
4400 | if (ret) | |
4401 | continue; | |
4402 | if (val == dev->devno) { | |
4403 | dev_dbg(d, "found matching device node\n"); | |
4404 | sdev->sdev_gendev.of_node = child; | |
4405 | return; | |
4406 | } | |
4407 | } | |
4408 | } | |
4409 | #else | |
4410 | static void ata_scsi_assign_ofnode(struct ata_device *dev, struct ata_port *ap) | |
4411 | { | |
4412 | } | |
4413 | #endif | |
4414 | ||
1ae46317 | 4415 | void ata_scsi_scan_host(struct ata_port *ap, int sync) |
644dd0cc | 4416 | { |
1ae46317 TH |
4417 | int tries = 5; |
4418 | struct ata_device *last_failed_dev = NULL; | |
41bda9c9 | 4419 | struct ata_link *link; |
1ae46317 | 4420 | struct ata_device *dev; |
644dd0cc | 4421 | |
1ae46317 | 4422 | repeat: |
1eca4365 TH |
4423 | ata_for_each_link(link, ap, EDGE) { |
4424 | ata_for_each_dev(dev, link, ENABLED) { | |
41bda9c9 TH |
4425 | struct scsi_device *sdev; |
4426 | int channel = 0, id = 0; | |
3edebac4 | 4427 | |
1eca4365 | 4428 | if (dev->sdev) |
41bda9c9 | 4429 | continue; |
3f19ee8c | 4430 | |
41bda9c9 TH |
4431 | if (ata_is_host_link(link)) |
4432 | id = dev->devno; | |
4433 | else | |
4434 | channel = link->pmp; | |
4435 | ||
4436 | sdev = __scsi_add_device(ap->scsi_host, channel, id, 0, | |
4437 | NULL); | |
4438 | if (!IS_ERR(sdev)) { | |
4439 | dev->sdev = sdev; | |
45b8084f | 4440 | ata_scsi_assign_ofnode(dev, ap); |
41bda9c9 | 4441 | scsi_device_put(sdev); |
295124dc GG |
4442 | } else { |
4443 | dev->sdev = NULL; | |
41bda9c9 | 4444 | } |
3edebac4 | 4445 | } |
3f19ee8c | 4446 | } |
1ae46317 TH |
4447 | |
4448 | /* If we scanned while EH was in progress or allocation | |
4449 | * failure occurred, scan would have failed silently. Check | |
4450 | * whether all devices are attached. | |
4451 | */ | |
1eca4365 TH |
4452 | ata_for_each_link(link, ap, EDGE) { |
4453 | ata_for_each_dev(dev, link, ENABLED) { | |
4454 | if (!dev->sdev) | |
41bda9c9 TH |
4455 | goto exit_loop; |
4456 | } | |
1ae46317 | 4457 | } |
41bda9c9 TH |
4458 | exit_loop: |
4459 | if (!link) | |
1ae46317 TH |
4460 | return; |
4461 | ||
4462 | /* we're missing some SCSI devices */ | |
4463 | if (sync) { | |
4464 | /* If caller requested synchrnous scan && we've made | |
4465 | * any progress, sleep briefly and repeat. | |
4466 | */ | |
4467 | if (dev != last_failed_dev) { | |
4468 | msleep(100); | |
4469 | last_failed_dev = dev; | |
4470 | goto repeat; | |
4471 | } | |
4472 | ||
4473 | /* We might be failing to detect boot device, give it | |
4474 | * a few more chances. | |
4475 | */ | |
4476 | if (--tries) { | |
4477 | msleep(100); | |
4478 | goto repeat; | |
4479 | } | |
4480 | ||
a9a79dfe JP |
4481 | ata_port_err(ap, |
4482 | "WARNING: synchronous SCSI scan failed without making any progress, switching to async\n"); | |
1ae46317 TH |
4483 | } |
4484 | ||
ad72cf98 | 4485 | queue_delayed_work(system_long_wq, &ap->hotplug_task, |
1ae46317 | 4486 | round_jiffies_relative(HZ)); |
644dd0cc | 4487 | } |
0ea035a3 TH |
4488 | |
4489 | /** | |
4490 | * ata_scsi_offline_dev - offline attached SCSI device | |
4491 | * @dev: ATA device to offline attached SCSI device for | |
4492 | * | |
4493 | * This function is called from ata_eh_hotplug() and responsible | |
4494 | * for taking the SCSI device attached to @dev offline. This | |
cca3974e | 4495 | * function is called with host lock which protects dev->sdev |
0ea035a3 TH |
4496 | * against clearing. |
4497 | * | |
4498 | * LOCKING: | |
cca3974e | 4499 | * spin_lock_irqsave(host lock) |
0ea035a3 TH |
4500 | * |
4501 | * RETURNS: | |
4502 | * 1 if attached SCSI device exists, 0 otherwise. | |
4503 | */ | |
4504 | int ata_scsi_offline_dev(struct ata_device *dev) | |
4505 | { | |
4506 | if (dev->sdev) { | |
4507 | scsi_device_set_state(dev->sdev, SDEV_OFFLINE); | |
4508 | return 1; | |
4509 | } | |
4510 | return 0; | |
4511 | } | |
580b2102 TH |
4512 | |
4513 | /** | |
4514 | * ata_scsi_remove_dev - remove attached SCSI device | |
4515 | * @dev: ATA device to remove attached SCSI device for | |
4516 | * | |
4517 | * This function is called from ata_eh_scsi_hotplug() and | |
4518 | * responsible for removing the SCSI device attached to @dev. | |
4519 | * | |
4520 | * LOCKING: | |
4521 | * Kernel thread context (may sleep). | |
4522 | */ | |
4523 | static void ata_scsi_remove_dev(struct ata_device *dev) | |
4524 | { | |
9af5c9c9 | 4525 | struct ata_port *ap = dev->link->ap; |
580b2102 TH |
4526 | struct scsi_device *sdev; |
4527 | unsigned long flags; | |
4528 | ||
4529 | /* Alas, we need to grab scan_mutex to ensure SCSI device | |
4530 | * state doesn't change underneath us and thus | |
4531 | * scsi_device_get() always succeeds. The mutex locking can | |
4532 | * be removed if there is __scsi_device_get() interface which | |
4533 | * increments reference counts regardless of device state. | |
4534 | */ | |
cca3974e | 4535 | mutex_lock(&ap->scsi_host->scan_mutex); |
ba6a1308 | 4536 | spin_lock_irqsave(ap->lock, flags); |
580b2102 | 4537 | |
cca3974e | 4538 | /* clearing dev->sdev is protected by host lock */ |
580b2102 TH |
4539 | sdev = dev->sdev; |
4540 | dev->sdev = NULL; | |
4541 | ||
4542 | if (sdev) { | |
4543 | /* If user initiated unplug races with us, sdev can go | |
cca3974e | 4544 | * away underneath us after the host lock and |
580b2102 TH |
4545 | * scan_mutex are released. Hold onto it. |
4546 | */ | |
4547 | if (scsi_device_get(sdev) == 0) { | |
4548 | /* The following ensures the attached sdev is | |
4549 | * offline on return from ata_scsi_offline_dev() | |
4550 | * regardless it wins or loses the race | |
4551 | * against this function. | |
4552 | */ | |
4553 | scsi_device_set_state(sdev, SDEV_OFFLINE); | |
4554 | } else { | |
4555 | WARN_ON(1); | |
4556 | sdev = NULL; | |
4557 | } | |
4558 | } | |
4559 | ||
ba6a1308 | 4560 | spin_unlock_irqrestore(ap->lock, flags); |
cca3974e | 4561 | mutex_unlock(&ap->scsi_host->scan_mutex); |
580b2102 TH |
4562 | |
4563 | if (sdev) { | |
a9a79dfe JP |
4564 | ata_dev_info(dev, "detaching (SCSI %s)\n", |
4565 | dev_name(&sdev->sdev_gendev)); | |
580b2102 TH |
4566 | |
4567 | scsi_remove_device(sdev); | |
4568 | scsi_device_put(sdev); | |
4569 | } | |
4570 | } | |
4571 | ||
41bda9c9 TH |
4572 | static void ata_scsi_handle_link_detach(struct ata_link *link) |
4573 | { | |
4574 | struct ata_port *ap = link->ap; | |
4575 | struct ata_device *dev; | |
4576 | ||
1eca4365 | 4577 | ata_for_each_dev(dev, link, ALL) { |
41bda9c9 TH |
4578 | unsigned long flags; |
4579 | ||
4580 | if (!(dev->flags & ATA_DFLAG_DETACHED)) | |
4581 | continue; | |
4582 | ||
4583 | spin_lock_irqsave(ap->lock, flags); | |
4584 | dev->flags &= ~ATA_DFLAG_DETACHED; | |
4585 | spin_unlock_irqrestore(ap->lock, flags); | |
4586 | ||
f1bc1e4c AL |
4587 | if (zpodd_dev_enabled(dev)) |
4588 | zpodd_exit(dev); | |
4589 | ||
41bda9c9 TH |
4590 | ata_scsi_remove_dev(dev); |
4591 | } | |
4592 | } | |
4593 | ||
2f294968 KCA |
4594 | /** |
4595 | * ata_scsi_media_change_notify - send media change event | |
c5d0e6a0 | 4596 | * @dev: Pointer to the disk device with media change event |
2f294968 KCA |
4597 | * |
4598 | * Tell the block layer to send a media change notification | |
4599 | * event. | |
4600 | * | |
4601 | * LOCKING: | |
854c73a2 | 4602 | * spin_lock_irqsave(host lock) |
2f294968 | 4603 | */ |
854c73a2 | 4604 | void ata_scsi_media_change_notify(struct ata_device *dev) |
2f294968 | 4605 | { |
854c73a2 | 4606 | if (dev->sdev) |
f26792d5 JG |
4607 | sdev_evt_send_simple(dev->sdev, SDEV_EVT_MEDIA_CHANGE, |
4608 | GFP_ATOMIC); | |
2f294968 | 4609 | } |
2f294968 | 4610 | |
580b2102 TH |
4611 | /** |
4612 | * ata_scsi_hotplug - SCSI part of hotplug | |
65f27f38 | 4613 | * @work: Pointer to ATA port to perform SCSI hotplug on |
580b2102 TH |
4614 | * |
4615 | * Perform SCSI part of hotplug. It's executed from a separate | |
4616 | * workqueue after EH completes. This is necessary because SCSI | |
4617 | * hot plugging requires working EH and hot unplugging is | |
4618 | * synchronized with hot plugging with a mutex. | |
4619 | * | |
4620 | * LOCKING: | |
4621 | * Kernel thread context (may sleep). | |
4622 | */ | |
65f27f38 | 4623 | void ata_scsi_hotplug(struct work_struct *work) |
580b2102 | 4624 | { |
65f27f38 DH |
4625 | struct ata_port *ap = |
4626 | container_of(work, struct ata_port, hotplug_task.work); | |
41bda9c9 | 4627 | int i; |
580b2102 | 4628 | |
1fe9fb71 | 4629 | if (ap->pflags & ATA_PFLAG_UNLOADING) |
580b2102 | 4630 | return; |
580b2102 | 4631 | |
ad72cf98 | 4632 | mutex_lock(&ap->scsi_scan_mutex); |
580b2102 | 4633 | |
41bda9c9 TH |
4634 | /* Unplug detached devices. We cannot use link iterator here |
4635 | * because PMP links have to be scanned even if PMP is | |
4636 | * currently not attached. Iterate manually. | |
4637 | */ | |
4638 | ata_scsi_handle_link_detach(&ap->link); | |
4639 | if (ap->pmp_link) | |
4640 | for (i = 0; i < SATA_PMP_MAX_PORTS; i++) | |
4641 | ata_scsi_handle_link_detach(&ap->pmp_link[i]); | |
580b2102 TH |
4642 | |
4643 | /* scan for new ones */ | |
1ae46317 | 4644 | ata_scsi_scan_host(ap, 0); |
580b2102 | 4645 | |
ad72cf98 | 4646 | mutex_unlock(&ap->scsi_scan_mutex); |
580b2102 | 4647 | } |
83c47bcb TH |
4648 | |
4649 | /** | |
4650 | * ata_scsi_user_scan - indication for user-initiated bus scan | |
4651 | * @shost: SCSI host to scan | |
4652 | * @channel: Channel to scan | |
4653 | * @id: ID to scan | |
4654 | * @lun: LUN to scan | |
4655 | * | |
4656 | * This function is called when user explicitly requests bus | |
4657 | * scan. Set probe pending flag and invoke EH. | |
4658 | * | |
4659 | * LOCKING: | |
4660 | * SCSI layer (we don't care) | |
4661 | * | |
4662 | * RETURNS: | |
4663 | * Zero. | |
4664 | */ | |
d9027470 | 4665 | int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, |
9cb78c16 | 4666 | unsigned int id, u64 lun) |
83c47bcb TH |
4667 | { |
4668 | struct ata_port *ap = ata_shost_to_port(shost); | |
4669 | unsigned long flags; | |
41bda9c9 | 4670 | int devno, rc = 0; |
83c47bcb | 4671 | |
41bda9c9 | 4672 | if (lun != SCAN_WILD_CARD && lun) |
83c47bcb TH |
4673 | return -EINVAL; |
4674 | ||
071f44b1 | 4675 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
4676 | if (channel != SCAN_WILD_CARD && channel) |
4677 | return -EINVAL; | |
4678 | devno = id; | |
4679 | } else { | |
4680 | if (id != SCAN_WILD_CARD && id) | |
4681 | return -EINVAL; | |
4682 | devno = channel; | |
4683 | } | |
4684 | ||
ba6a1308 | 4685 | spin_lock_irqsave(ap->lock, flags); |
83c47bcb | 4686 | |
41bda9c9 TH |
4687 | if (devno == SCAN_WILD_CARD) { |
4688 | struct ata_link *link; | |
4689 | ||
1eca4365 | 4690 | ata_for_each_link(link, ap, EDGE) { |
41bda9c9 | 4691 | struct ata_eh_info *ehi = &link->eh_info; |
b558eddd | 4692 | ehi->probe_mask |= ATA_ALL_DEVICES; |
cf480626 | 4693 | ehi->action |= ATA_EH_RESET; |
41bda9c9 | 4694 | } |
83c47bcb | 4695 | } else { |
41bda9c9 | 4696 | struct ata_device *dev = ata_find_dev(ap, devno); |
83c47bcb TH |
4697 | |
4698 | if (dev) { | |
41bda9c9 | 4699 | struct ata_eh_info *ehi = &dev->link->eh_info; |
9af5c9c9 | 4700 | ehi->probe_mask |= 1 << dev->devno; |
cf480626 | 4701 | ehi->action |= ATA_EH_RESET; |
83c47bcb TH |
4702 | } else |
4703 | rc = -EINVAL; | |
4704 | } | |
4705 | ||
309afcb5 | 4706 | if (rc == 0) { |
83c47bcb | 4707 | ata_port_schedule_eh(ap); |
309afcb5 TH |
4708 | spin_unlock_irqrestore(ap->lock, flags); |
4709 | ata_port_wait_eh(ap); | |
4710 | } else | |
4711 | spin_unlock_irqrestore(ap->lock, flags); | |
83c47bcb TH |
4712 | |
4713 | return rc; | |
4714 | } | |
3057ac3c | 4715 | |
4716 | /** | |
d0171269 | 4717 | * ata_scsi_dev_rescan - initiate scsi_rescan_device() |
65f27f38 | 4718 | * @work: Pointer to ATA port to perform scsi_rescan_device() |
3057ac3c | 4719 | * |
d0171269 | 4720 | * After ATA pass thru (SAT) commands are executed successfully, |
ad72cf98 | 4721 | * libata need to propagate the changes to SCSI layer. |
3057ac3c | 4722 | * |
d0171269 TH |
4723 | * LOCKING: |
4724 | * Kernel thread context (may sleep). | |
3057ac3c | 4725 | */ |
65f27f38 | 4726 | void ata_scsi_dev_rescan(struct work_struct *work) |
3057ac3c | 4727 | { |
65f27f38 | 4728 | struct ata_port *ap = |
6aa0365a | 4729 | container_of(work, struct ata_port, scsi_rescan_task.work); |
41bda9c9 | 4730 | struct ata_link *link; |
f58229f8 | 4731 | struct ata_device *dev; |
f84e7e41 | 4732 | unsigned long flags; |
8b4d9469 | 4733 | int ret = 0; |
3057ac3c | 4734 | |
ad72cf98 | 4735 | mutex_lock(&ap->scsi_scan_mutex); |
f84e7e41 TH |
4736 | spin_lock_irqsave(ap->lock, flags); |
4737 | ||
1eca4365 TH |
4738 | ata_for_each_link(link, ap, EDGE) { |
4739 | ata_for_each_dev(dev, link, ENABLED) { | |
41bda9c9 | 4740 | struct scsi_device *sdev = dev->sdev; |
3057ac3c | 4741 | |
8b4d9469 DLM |
4742 | /* |
4743 | * If the port was suspended before this was scheduled, | |
4744 | * bail out. | |
4745 | */ | |
4746 | if (ap->pflags & ATA_PFLAG_SUSPENDED) | |
4747 | goto unlock; | |
4748 | ||
1eca4365 | 4749 | if (!sdev) |
41bda9c9 TH |
4750 | continue; |
4751 | if (scsi_device_get(sdev)) | |
4752 | continue; | |
f84e7e41 | 4753 | |
41bda9c9 | 4754 | spin_unlock_irqrestore(ap->lock, flags); |
8b4d9469 | 4755 | ret = scsi_rescan_device(sdev); |
41bda9c9 TH |
4756 | scsi_device_put(sdev); |
4757 | spin_lock_irqsave(ap->lock, flags); | |
8b4d9469 DLM |
4758 | |
4759 | if (ret) | |
4760 | goto unlock; | |
41bda9c9 | 4761 | } |
3057ac3c | 4762 | } |
f84e7e41 | 4763 | |
8b4d9469 | 4764 | unlock: |
f84e7e41 | 4765 | spin_unlock_irqrestore(ap->lock, flags); |
ad72cf98 | 4766 | mutex_unlock(&ap->scsi_scan_mutex); |
6aa0365a | 4767 | |
8b4d9469 DLM |
4768 | /* Reschedule with a delay if scsi_rescan_device() returned an error */ |
4769 | if (ret) | |
6aa0365a DLM |
4770 | schedule_delayed_work(&ap->scsi_rescan_task, |
4771 | msecs_to_jiffies(5)); | |
3057ac3c | 4772 | } |