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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. | |
0a858905 | 1058 | */ |
3cc2ffe5 | 1059 | sdev->manage_runtime_start_stop = true; |
24eca2dc | 1060 | sdev->manage_shutdown = true; |
dde20207 | 1061 | } |
d8cf5389 | 1062 | |
729a6a30 TH |
1063 | /* |
1064 | * ata_pio_sectors() expects buffer for each sector to not cross | |
1065 | * page boundary. Enforce it by requiring buffers to be sector | |
1066 | * aligned, which works iff sector_size is not larger than | |
1067 | * PAGE_SIZE. ATAPI devices also need the alignment as | |
1068 | * IDENTIFY_PACKET is executed as ATA_PROT_PIO. | |
1069 | */ | |
1070 | if (sdev->sector_size > PAGE_SIZE) | |
a9a79dfe | 1071 | ata_dev_warn(dev, |
729a6a30 TH |
1072 | "sector_size=%u > PAGE_SIZE, PIO may malfunction\n", |
1073 | sdev->sector_size); | |
1074 | ||
900e599e | 1075 | blk_queue_update_dma_alignment(q, sdev->sector_size - 1); |
729a6a30 | 1076 | |
f26792d5 JG |
1077 | if (dev->flags & ATA_DFLAG_AN) |
1078 | set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events); | |
1079 | ||
43cff7d9 | 1080 | if (ata_ncq_supported(dev)) |
a6e6ce8e | 1081 | depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id)); |
6a8438de DLM |
1082 | depth = min(ATA_MAX_QUEUE, depth); |
1083 | scsi_change_queue_depth(sdev, depth); | |
fa2fc7f4 | 1084 | |
d80210f2 CH |
1085 | if (dev->flags & ATA_DFLAG_TRUSTED) |
1086 | sdev->security_supported = 1; | |
1087 | ||
295124dc | 1088 | dev->sdev = sdev; |
fa2fc7f4 | 1089 | return 0; |
a6cce2a7 BK |
1090 | } |
1091 | ||
fb99ef17 DLM |
1092 | /** |
1093 | * ata_scsi_slave_alloc - Early setup of SCSI device | |
1094 | * @sdev: SCSI device to examine | |
1095 | * | |
1096 | * This is called from scsi_alloc_sdev() when the scsi device | |
1097 | * associated with an ATA device is scanned on a port. | |
1098 | * | |
1099 | * LOCKING: | |
1100 | * Defined by SCSI layer. We don't really care. | |
1101 | */ | |
1102 | ||
1103 | int ata_scsi_slave_alloc(struct scsi_device *sdev) | |
1104 | { | |
1105 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
1106 | struct device_link *link; | |
1107 | ||
1108 | ata_scsi_sdev_config(sdev); | |
1109 | ||
1110 | /* | |
1111 | * Create a link from the ata_port device to the scsi device to ensure | |
1112 | * that PM does suspend/resume in the correct order: the scsi device is | |
1113 | * consumer (child) and the ata port the supplier (parent). | |
1114 | */ | |
1115 | link = device_link_add(&sdev->sdev_gendev, &ap->tdev, | |
1116 | DL_FLAG_STATELESS | | |
1117 | DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE); | |
1118 | if (!link) { | |
1119 | ata_port_err(ap, "Failed to create link to scsi device %s\n", | |
1120 | dev_name(&sdev->sdev_gendev)); | |
1121 | return -ENODEV; | |
1122 | } | |
1123 | ||
1124 | return 0; | |
1125 | } | |
1126 | EXPORT_SYMBOL_GPL(ata_scsi_slave_alloc); | |
1127 | ||
1da177e4 LT |
1128 | /** |
1129 | * ata_scsi_slave_config - Set SCSI device attributes | |
1130 | * @sdev: SCSI device to examine | |
1131 | * | |
1132 | * This is called before we actually start reading | |
1133 | * and writing to the device, to configure certain | |
1134 | * SCSI mid-layer behaviors. | |
1135 | * | |
1136 | * LOCKING: | |
1137 | * Defined by SCSI layer. We don't really care. | |
1138 | */ | |
1139 | ||
1140 | int ata_scsi_slave_config(struct scsi_device *sdev) | |
1141 | { | |
31534363 TH |
1142 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
1143 | struct ata_device *dev = __ata_scsi_find_dev(ap, sdev); | |
1da177e4 | 1144 | |
31534363 | 1145 | if (dev) |
fb99ef17 | 1146 | return ata_scsi_dev_config(sdev, dev); |
1da177e4 | 1147 | |
fb99ef17 | 1148 | return 0; |
1da177e4 | 1149 | } |
a52fbcfc | 1150 | EXPORT_SYMBOL_GPL(ata_scsi_slave_config); |
1da177e4 | 1151 | |
83c47bcb TH |
1152 | /** |
1153 | * ata_scsi_slave_destroy - SCSI device is about to be destroyed | |
1154 | * @sdev: SCSI device to be destroyed | |
1155 | * | |
1156 | * @sdev is about to be destroyed for hot/warm unplugging. If | |
1157 | * this unplugging was initiated by libata as indicated by NULL | |
1158 | * dev->sdev, this function doesn't have to do anything. | |
1159 | * Otherwise, SCSI layer initiated warm-unplug is in progress. | |
1160 | * Clear dev->sdev, schedule the device for ATA detach and invoke | |
1161 | * EH. | |
1162 | * | |
1163 | * LOCKING: | |
1164 | * Defined by SCSI layer. We don't really care. | |
1165 | */ | |
1166 | void ata_scsi_slave_destroy(struct scsi_device *sdev) | |
1167 | { | |
1168 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
1169 | unsigned long flags; | |
1170 | struct ata_device *dev; | |
1171 | ||
fb99ef17 DLM |
1172 | device_link_remove(&sdev->sdev_gendev, &ap->tdev); |
1173 | ||
ba6a1308 | 1174 | spin_lock_irqsave(ap->lock, flags); |
83c47bcb TH |
1175 | dev = __ata_scsi_find_dev(ap, sdev); |
1176 | if (dev && dev->sdev) { | |
1177 | /* SCSI device already in CANCEL state, no need to offline it */ | |
1178 | dev->sdev = NULL; | |
1179 | dev->flags |= ATA_DFLAG_DETACH; | |
1180 | ata_port_schedule_eh(ap); | |
1181 | } | |
ba6a1308 | 1182 | spin_unlock_irqrestore(ap->lock, flags); |
fa2fc7f4 | 1183 | |
cc97923a | 1184 | kfree(sdev->dma_drain_buf); |
83c47bcb | 1185 | } |
a52fbcfc | 1186 | EXPORT_SYMBOL_GPL(ata_scsi_slave_destroy); |
83c47bcb | 1187 | |
972dcafb DG |
1188 | /** |
1189 | * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command | |
1190 | * @qc: Storage for translated ATA taskfile | |
972dcafb DG |
1191 | * |
1192 | * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY | |
1193 | * (to start). Perhaps these commands should be preceded by | |
1194 | * CHECK POWER MODE to see what power mode the device is already in. | |
1195 | * [See SAT revision 5 at www.t10.org] | |
1196 | * | |
1197 | * LOCKING: | |
cca3974e | 1198 | * spin_lock_irqsave(host lock) |
972dcafb DG |
1199 | * |
1200 | * RETURNS: | |
1201 | * Zero on success, non-zero on error. | |
1202 | */ | |
ad706991 | 1203 | static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc) |
972dcafb | 1204 | { |
542b1444 | 1205 | struct scsi_cmnd *scmd = qc->scsicmd; |
972dcafb | 1206 | struct ata_taskfile *tf = &qc->tf; |
ad706991 | 1207 | const u8 *cdb = scmd->cmnd; |
bcfc867d | 1208 | u16 fp; |
0df10b84 | 1209 | u8 bp = 0xff; |
972dcafb | 1210 | |
bcfc867d HR |
1211 | if (scmd->cmd_len < 5) { |
1212 | fp = 4; | |
2e5704f6 | 1213 | goto invalid_fld; |
bcfc867d | 1214 | } |
2e5704f6 | 1215 | |
972dcafb DG |
1216 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
1217 | tf->protocol = ATA_PROT_NODATA; | |
542b1444 | 1218 | if (cdb[1] & 0x1) { |
972dcafb DG |
1219 | ; /* ignore IMMED bit, violates sat-r05 */ |
1220 | } | |
bcfc867d HR |
1221 | if (cdb[4] & 0x2) { |
1222 | fp = 4; | |
0df10b84 | 1223 | bp = 1; |
ae006510 | 1224 | goto invalid_fld; /* LOEJ bit set not supported */ |
bcfc867d HR |
1225 | } |
1226 | if (((cdb[4] >> 4) & 0xf) != 0) { | |
1227 | fp = 4; | |
0df10b84 | 1228 | bp = 3; |
ae006510 | 1229 | goto invalid_fld; /* power conditions not supported */ |
bcfc867d | 1230 | } |
e31e8531 | 1231 | |
542b1444 | 1232 | if (cdb[4] & 0x1) { |
aa3998db | 1233 | tf->nsect = 1; /* 1 sector, lba=0 */ |
9d5b1302 AL |
1234 | |
1235 | if (qc->dev->flags & ATA_DFLAG_LBA) { | |
c44078c0 | 1236 | tf->flags |= ATA_TFLAG_LBA; |
9d5b1302 AL |
1237 | |
1238 | tf->lbah = 0x0; | |
1239 | tf->lbam = 0x0; | |
1240 | tf->lbal = 0x0; | |
1241 | tf->device |= ATA_LBA; | |
1242 | } else { | |
1243 | /* CHS */ | |
1244 | tf->lbal = 0x1; /* sect */ | |
1245 | tf->lbam = 0x0; /* cyl low */ | |
1246 | tf->lbah = 0x0; /* cyl high */ | |
1247 | } | |
1248 | ||
aa3998db | 1249 | tf->command = ATA_CMD_VERIFY; /* READ VERIFY */ |
920a4b10 | 1250 | } else { |
2a6e58d2 RW |
1251 | /* Some odd clown BIOSen issue spindown on power off (ACPI S4 |
1252 | * or S5) causing some drives to spin up and down again. | |
1253 | */ | |
1254 | if ((qc->ap->flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) && | |
1255 | system_state == SYSTEM_POWER_OFF) | |
1256 | goto skip; | |
1257 | ||
1258 | if ((qc->ap->flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) && | |
aa3998db | 1259 | system_entering_hibernation()) |
2a6e58d2 RW |
1260 | goto skip; |
1261 | ||
78981a7c RH |
1262 | /* Issue ATA STANDBY IMMEDIATE command */ |
1263 | tf->command = ATA_CMD_STANDBYNOW1; | |
920a4b10 | 1264 | } |
78981a7c | 1265 | |
972dcafb DG |
1266 | /* |
1267 | * Standby and Idle condition timers could be implemented but that | |
1268 | * would require libata to implement the Power condition mode page | |
1269 | * and allow the user to change it. Changing mode pages requires | |
1270 | * MODE SELECT to be implemented. | |
1271 | */ | |
1272 | ||
1273 | return 0; | |
ae006510 | 1274 | |
2a6e58d2 | 1275 | invalid_fld: |
0df10b84 | 1276 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); |
ae006510 | 1277 | return 1; |
2a6e58d2 RW |
1278 | skip: |
1279 | scmd->result = SAM_STAT_GOOD; | |
1280 | return 1; | |
972dcafb DG |
1281 | } |
1282 | ||
1283 | ||
1da177e4 LT |
1284 | /** |
1285 | * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command | |
1286 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1287 | * |
1288 | * Sets up an ATA taskfile to issue FLUSH CACHE or | |
1289 | * FLUSH CACHE EXT. | |
1290 | * | |
1291 | * LOCKING: | |
cca3974e | 1292 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1293 | * |
1294 | * RETURNS: | |
1295 | * Zero on success, non-zero on error. | |
1296 | */ | |
ad706991 | 1297 | static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc) |
1da177e4 LT |
1298 | { |
1299 | struct ata_taskfile *tf = &qc->tf; | |
1300 | ||
1301 | tf->flags |= ATA_TFLAG_DEVICE; | |
1302 | tf->protocol = ATA_PROT_NODATA; | |
1303 | ||
6fc49adb | 1304 | if (qc->dev->flags & ATA_DFLAG_FLUSH_EXT) |
1da177e4 LT |
1305 | tf->command = ATA_CMD_FLUSH_EXT; |
1306 | else | |
1307 | tf->command = ATA_CMD_FLUSH; | |
1308 | ||
b666da35 TH |
1309 | /* flush is critical for IO integrity, consider it an IO command */ |
1310 | qc->flags |= ATA_QCFLAG_IO; | |
1311 | ||
1da177e4 LT |
1312 | return 0; |
1313 | } | |
1314 | ||
3aef5231 AL |
1315 | /** |
1316 | * scsi_6_lba_len - Get LBA and transfer length | |
542b1444 | 1317 | * @cdb: SCSI command to translate |
3aef5231 AL |
1318 | * |
1319 | * Calculate LBA and transfer length for 6-byte commands. | |
1320 | * | |
1321 | * RETURNS: | |
1322 | * @plba: the LBA | |
1323 | * @plen: the transfer length | |
1324 | */ | |
542b1444 | 1325 | static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 AL |
1326 | { |
1327 | u64 lba = 0; | |
6c7b7d2b | 1328 | u32 len; |
3aef5231 | 1329 | |
6c7b7d2b | 1330 | lba |= ((u64)(cdb[1] & 0x1f)) << 16; |
542b1444 TH |
1331 | lba |= ((u64)cdb[2]) << 8; |
1332 | lba |= ((u64)cdb[3]); | |
3aef5231 | 1333 | |
6c7b7d2b | 1334 | len = cdb[4]; |
3aef5231 AL |
1335 | |
1336 | *plba = lba; | |
1337 | *plen = len; | |
1338 | } | |
1339 | ||
1340 | /** | |
1341 | * scsi_10_lba_len - Get LBA and transfer length | |
542b1444 | 1342 | * @cdb: SCSI command to translate |
3aef5231 AL |
1343 | * |
1344 | * Calculate LBA and transfer length for 10-byte commands. | |
1345 | * | |
1346 | * RETURNS: | |
1347 | * @plba: the LBA | |
1348 | * @plen: the transfer length | |
1349 | */ | |
6e163f9b | 1350 | static inline void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 | 1351 | { |
6e163f9b DLM |
1352 | *plba = get_unaligned_be32(&cdb[2]); |
1353 | *plen = get_unaligned_be16(&cdb[7]); | |
3aef5231 AL |
1354 | } |
1355 | ||
1356 | /** | |
1357 | * scsi_16_lba_len - Get LBA and transfer length | |
542b1444 | 1358 | * @cdb: SCSI command to translate |
3aef5231 AL |
1359 | * |
1360 | * Calculate LBA and transfer length for 16-byte commands. | |
1361 | * | |
1362 | * RETURNS: | |
1363 | * @plba: the LBA | |
1364 | * @plen: the transfer length | |
1365 | */ | |
6e163f9b | 1366 | static inline void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 | 1367 | { |
6e163f9b DLM |
1368 | *plba = get_unaligned_be64(&cdb[2]); |
1369 | *plen = get_unaligned_be32(&cdb[10]); | |
3aef5231 AL |
1370 | } |
1371 | ||
eafe804b DLM |
1372 | /** |
1373 | * scsi_dld - Get duration limit descriptor index | |
1374 | * @cdb: SCSI command to translate | |
1375 | * | |
1376 | * Returns the dld bits indicating the index of a command duration limit | |
1377 | * descriptor. | |
1378 | */ | |
1379 | static inline int scsi_dld(const u8 *cdb) | |
1380 | { | |
1381 | return ((cdb[1] & 0x01) << 2) | ((cdb[14] >> 6) & 0x03); | |
1382 | } | |
1383 | ||
1da177e4 LT |
1384 | /** |
1385 | * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one | |
1386 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1387 | * |
1388 | * Converts SCSI VERIFY command to an ATA READ VERIFY command. | |
1389 | * | |
1390 | * LOCKING: | |
cca3974e | 1391 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1392 | * |
1393 | * RETURNS: | |
1394 | * Zero on success, non-zero on error. | |
1395 | */ | |
ad706991 | 1396 | static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 1397 | { |
542b1444 | 1398 | struct scsi_cmnd *scmd = qc->scsicmd; |
1da177e4 | 1399 | struct ata_taskfile *tf = &qc->tf; |
8bf62ece | 1400 | struct ata_device *dev = qc->dev; |
1da177e4 | 1401 | u64 dev_sectors = qc->dev->n_sectors; |
ad706991 | 1402 | const u8 *cdb = scmd->cmnd; |
3aef5231 AL |
1403 | u64 block; |
1404 | u32 n_block; | |
bcfc867d | 1405 | u16 fp; |
1da177e4 LT |
1406 | |
1407 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
1408 | tf->protocol = ATA_PROT_NODATA; | |
1da177e4 | 1409 | |
59b00404 SS |
1410 | switch (cdb[0]) { |
1411 | case VERIFY: | |
bcfc867d HR |
1412 | if (scmd->cmd_len < 10) { |
1413 | fp = 9; | |
2e5704f6 | 1414 | goto invalid_fld; |
bcfc867d | 1415 | } |
542b1444 | 1416 | scsi_10_lba_len(cdb, &block, &n_block); |
59b00404 SS |
1417 | break; |
1418 | case VERIFY_16: | |
bcfc867d HR |
1419 | if (scmd->cmd_len < 16) { |
1420 | fp = 15; | |
2e5704f6 | 1421 | goto invalid_fld; |
bcfc867d | 1422 | } |
542b1444 | 1423 | scsi_16_lba_len(cdb, &block, &n_block); |
59b00404 SS |
1424 | break; |
1425 | default: | |
bcfc867d | 1426 | fp = 0; |
ae006510 | 1427 | goto invalid_fld; |
bcfc867d | 1428 | } |
1da177e4 | 1429 | |
8bf62ece | 1430 | if (!n_block) |
ae006510 | 1431 | goto nothing_to_do; |
8bf62ece | 1432 | if (block >= dev_sectors) |
ae006510 | 1433 | goto out_of_range; |
8bf62ece | 1434 | if ((block + n_block) > dev_sectors) |
ae006510 | 1435 | goto out_of_range; |
1da177e4 | 1436 | |
07506697 AL |
1437 | if (dev->flags & ATA_DFLAG_LBA) { |
1438 | tf->flags |= ATA_TFLAG_LBA; | |
1439 | ||
c6a33e24 AL |
1440 | if (lba_28_ok(block, n_block)) { |
1441 | /* use LBA28 */ | |
1442 | tf->command = ATA_CMD_VERIFY; | |
1443 | tf->device |= (block >> 24) & 0xf; | |
1444 | } else if (lba_48_ok(block, n_block)) { | |
1445 | if (!(dev->flags & ATA_DFLAG_LBA48)) | |
1446 | goto out_of_range; | |
07506697 AL |
1447 | |
1448 | /* use LBA48 */ | |
1449 | tf->flags |= ATA_TFLAG_LBA48; | |
8bf62ece | 1450 | tf->command = ATA_CMD_VERIFY_EXT; |
1da177e4 | 1451 | |
8bf62ece | 1452 | tf->hob_nsect = (n_block >> 8) & 0xff; |
1da177e4 | 1453 | |
8bf62ece AL |
1454 | tf->hob_lbah = (block >> 40) & 0xff; |
1455 | tf->hob_lbam = (block >> 32) & 0xff; | |
1456 | tf->hob_lbal = (block >> 24) & 0xff; | |
c6a33e24 AL |
1457 | } else |
1458 | /* request too large even for LBA48 */ | |
1459 | goto out_of_range; | |
8bf62ece AL |
1460 | |
1461 | tf->nsect = n_block & 0xff; | |
1da177e4 | 1462 | |
8bf62ece AL |
1463 | tf->lbah = (block >> 16) & 0xff; |
1464 | tf->lbam = (block >> 8) & 0xff; | |
1465 | tf->lbal = block & 0xff; | |
1da177e4 | 1466 | |
8bf62ece AL |
1467 | tf->device |= ATA_LBA; |
1468 | } else { | |
1469 | /* CHS */ | |
1470 | u32 sect, head, cyl, track; | |
1471 | ||
c6a33e24 AL |
1472 | if (!lba_28_ok(block, n_block)) |
1473 | goto out_of_range; | |
07506697 | 1474 | |
8bf62ece AL |
1475 | /* Convert LBA to CHS */ |
1476 | track = (u32)block / dev->sectors; | |
1477 | cyl = track / dev->heads; | |
1478 | head = track % dev->heads; | |
1479 | sect = (u32)block % dev->sectors + 1; | |
1480 | ||
2e9edbf8 JG |
1481 | /* Check whether the converted CHS can fit. |
1482 | Cylinder: 0-65535 | |
8bf62ece AL |
1483 | Head: 0-15 |
1484 | Sector: 1-255*/ | |
2e9edbf8 | 1485 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
ae006510 | 1486 | goto out_of_range; |
2e9edbf8 | 1487 | |
8bf62ece AL |
1488 | tf->command = ATA_CMD_VERIFY; |
1489 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ | |
1490 | tf->lbal = sect; | |
1491 | tf->lbam = cyl; | |
1492 | tf->lbah = cyl >> 8; | |
1493 | tf->device |= head; | |
1494 | } | |
1da177e4 LT |
1495 | |
1496 | return 0; | |
ae006510 DG |
1497 | |
1498 | invalid_fld: | |
0df10b84 | 1499 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
ae006510 DG |
1500 | return 1; |
1501 | ||
1502 | out_of_range: | |
06dbde5f | 1503 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
ae006510 DG |
1504 | /* "Logical Block Address out of range" */ |
1505 | return 1; | |
1506 | ||
1507 | nothing_to_do: | |
542b1444 | 1508 | scmd->result = SAM_STAT_GOOD; |
ae006510 | 1509 | return 1; |
1da177e4 LT |
1510 | } |
1511 | ||
2d727150 JA |
1512 | static bool ata_check_nblocks(struct scsi_cmnd *scmd, u32 n_blocks) |
1513 | { | |
c8329cd5 | 1514 | struct request *rq = scsi_cmd_to_rq(scmd); |
2d727150 JA |
1515 | u32 req_blocks; |
1516 | ||
1517 | if (!blk_rq_is_passthrough(rq)) | |
1518 | return true; | |
1519 | ||
1520 | req_blocks = blk_rq_bytes(rq) / scmd->device->sector_size; | |
1521 | if (n_blocks > req_blocks) | |
1522 | return false; | |
1523 | ||
1524 | return true; | |
1525 | } | |
1526 | ||
1da177e4 LT |
1527 | /** |
1528 | * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one | |
1529 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1530 | * |
1531 | * Converts any of six SCSI read/write commands into the | |
1532 | * ATA counterpart, including starting sector (LBA), | |
1533 | * sector count, and taking into account the device's LBA48 | |
1534 | * support. | |
1535 | * | |
1536 | * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and | |
1537 | * %WRITE_16 are currently supported. | |
1538 | * | |
1539 | * LOCKING: | |
cca3974e | 1540 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1541 | * |
1542 | * RETURNS: | |
1543 | * Zero on success, non-zero on error. | |
1544 | */ | |
ad706991 | 1545 | static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 1546 | { |
542b1444 | 1547 | struct scsi_cmnd *scmd = qc->scsicmd; |
ad706991 | 1548 | const u8 *cdb = scmd->cmnd; |
c8329cd5 | 1549 | struct request *rq = scsi_cmd_to_rq(scmd); |
8e061784 | 1550 | int class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq)); |
bd056d7e | 1551 | unsigned int tf_flags = 0; |
eafe804b | 1552 | int dld = 0; |
3aef5231 AL |
1553 | u64 block; |
1554 | u32 n_block; | |
bd056d7e | 1555 | int rc; |
bcfc867d | 1556 | u16 fp = 0; |
1da177e4 | 1557 | |
59b00404 SS |
1558 | switch (cdb[0]) { |
1559 | case WRITE_6: | |
1560 | case WRITE_10: | |
1561 | case WRITE_16: | |
bd056d7e | 1562 | tf_flags |= ATA_TFLAG_WRITE; |
59b00404 SS |
1563 | break; |
1564 | } | |
1da177e4 | 1565 | |
9a3dccc4 | 1566 | /* Calculate the SCSI LBA, transfer length and FUA. */ |
542b1444 | 1567 | switch (cdb[0]) { |
3aef5231 AL |
1568 | case READ_10: |
1569 | case WRITE_10: | |
bcfc867d HR |
1570 | if (unlikely(scmd->cmd_len < 10)) { |
1571 | fp = 9; | |
2e5704f6 | 1572 | goto invalid_fld; |
bcfc867d | 1573 | } |
542b1444 | 1574 | scsi_10_lba_len(cdb, &block, &n_block); |
3e451a49 | 1575 | if (cdb[1] & (1 << 3)) |
bd056d7e | 1576 | tf_flags |= ATA_TFLAG_FUA; |
2d727150 JA |
1577 | if (!ata_check_nblocks(scmd, n_block)) |
1578 | goto invalid_fld; | |
3aef5231 AL |
1579 | break; |
1580 | case READ_6: | |
1581 | case WRITE_6: | |
bcfc867d HR |
1582 | if (unlikely(scmd->cmd_len < 6)) { |
1583 | fp = 5; | |
2e5704f6 | 1584 | goto invalid_fld; |
bcfc867d | 1585 | } |
542b1444 | 1586 | scsi_6_lba_len(cdb, &block, &n_block); |
c187c4b5 AL |
1587 | |
1588 | /* for 6-byte r/w commands, transfer length 0 | |
1589 | * means 256 blocks of data, not 0 block. | |
1590 | */ | |
76b2bf9b JG |
1591 | if (!n_block) |
1592 | n_block = 256; | |
2d727150 JA |
1593 | if (!ata_check_nblocks(scmd, n_block)) |
1594 | goto invalid_fld; | |
3aef5231 AL |
1595 | break; |
1596 | case READ_16: | |
1597 | case WRITE_16: | |
bcfc867d HR |
1598 | if (unlikely(scmd->cmd_len < 16)) { |
1599 | fp = 15; | |
2e5704f6 | 1600 | goto invalid_fld; |
bcfc867d | 1601 | } |
542b1444 | 1602 | scsi_16_lba_len(cdb, &block, &n_block); |
eafe804b | 1603 | dld = scsi_dld(cdb); |
3e451a49 | 1604 | if (cdb[1] & (1 << 3)) |
bd056d7e | 1605 | tf_flags |= ATA_TFLAG_FUA; |
2d727150 JA |
1606 | if (!ata_check_nblocks(scmd, n_block)) |
1607 | goto invalid_fld; | |
3aef5231 AL |
1608 | break; |
1609 | default: | |
bcfc867d | 1610 | fp = 0; |
ae006510 | 1611 | goto invalid_fld; |
1da177e4 LT |
1612 | } |
1613 | ||
8bf62ece AL |
1614 | /* Check and compose ATA command */ |
1615 | if (!n_block) | |
c187c4b5 AL |
1616 | /* For 10-byte and 16-byte SCSI R/W commands, transfer |
1617 | * length 0 means transfer 0 block of data. | |
1618 | * However, for ATA R/W commands, sector count 0 means | |
1619 | * 256 or 65536 sectors, not 0 sectors as in SCSI. | |
f51750d5 AC |
1620 | * |
1621 | * WARNING: one or two older ATA drives treat 0 as 0... | |
c187c4b5 | 1622 | */ |
ae006510 | 1623 | goto nothing_to_do; |
1da177e4 | 1624 | |
bd056d7e | 1625 | qc->flags |= ATA_QCFLAG_IO; |
295124dc | 1626 | qc->nbytes = n_block * scmd->device->sector_size; |
1da177e4 | 1627 | |
eafe804b | 1628 | rc = ata_build_rw_tf(qc, block, n_block, tf_flags, dld, class); |
bd056d7e TH |
1629 | if (likely(rc == 0)) |
1630 | return 0; | |
ae006510 | 1631 | |
bd056d7e TH |
1632 | if (rc == -ERANGE) |
1633 | goto out_of_range; | |
1634 | /* treat all other errors as -EINVAL, fall through */ | |
ae006510 | 1635 | invalid_fld: |
0df10b84 | 1636 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
ae006510 DG |
1637 | return 1; |
1638 | ||
1639 | out_of_range: | |
06dbde5f | 1640 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
ae006510 DG |
1641 | /* "Logical Block Address out of range" */ |
1642 | return 1; | |
1643 | ||
1644 | nothing_to_do: | |
542b1444 | 1645 | scmd->result = SAM_STAT_GOOD; |
ae006510 | 1646 | return 1; |
1da177e4 LT |
1647 | } |
1648 | ||
2aa8f5d6 CH |
1649 | static void ata_qc_done(struct ata_queued_cmd *qc) |
1650 | { | |
1651 | struct scsi_cmnd *cmd = qc->scsicmd; | |
1652 | void (*done)(struct scsi_cmnd *) = qc->scsidone; | |
1653 | ||
1654 | ata_qc_free(qc); | |
1655 | done(cmd); | |
1656 | } | |
1657 | ||
77853bf2 | 1658 | static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) |
1da177e4 LT |
1659 | { |
1660 | struct scsi_cmnd *cmd = qc->scsicmd; | |
a7dac447 | 1661 | u8 *cdb = cmd->cmnd; |
7574a837 NC |
1662 | int need_sense = (qc->err_mask != 0) && |
1663 | !(qc->flags & ATA_QCFLAG_SENSE_VALID); | |
b095518e JG |
1664 | |
1665 | /* For ATA pass thru (SAT) commands, generate a sense block if | |
1666 | * user mandated it or if there's an error. Note that if we | |
84a9a8cd GG |
1667 | * generate because the user forced us to [CK_COND =1], a check |
1668 | * condition is generated and the ATA register values are returned | |
b095518e | 1669 | * whether the command completed successfully or not. If there |
84a9a8cd GG |
1670 | * was no error, we use the following sense data: |
1671 | * sk = RECOVERED ERROR | |
1672 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE | |
b095518e | 1673 | */ |
a7dac447 | 1674 | if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) && |
25c7ce7f | 1675 | ((cdb[2] & 0x20) || need_sense)) |
750426aa | 1676 | ata_gen_passthru_sense(qc); |
25c7ce7f CH |
1677 | else if (need_sense) |
1678 | ata_gen_ata_sense(qc); | |
1679 | else | |
7574a837 NC |
1680 | /* Keep the SCSI ML and status byte, clear host byte. */ |
1681 | cmd->result &= 0x0000ffff; | |
1da177e4 | 1682 | |
2aa8f5d6 | 1683 | ata_qc_done(qc); |
1da177e4 LT |
1684 | } |
1685 | ||
1686 | /** | |
1687 | * ata_scsi_translate - Translate then issue SCSI command to ATA device | |
1da177e4 LT |
1688 | * @dev: ATA device to which the command is addressed |
1689 | * @cmd: SCSI command to execute | |
1da177e4 LT |
1690 | * @xlat_func: Actor which translates @cmd to an ATA taskfile |
1691 | * | |
1692 | * Our ->queuecommand() function has decided that the SCSI | |
1693 | * command issued can be directly translated into an ATA | |
1694 | * command, rather than handled internally. | |
1695 | * | |
1696 | * This function sets up an ata_queued_cmd structure for the | |
1697 | * SCSI command, and sends that ata_queued_cmd to the hardware. | |
1698 | * | |
ae006510 DG |
1699 | * The xlat_func argument (actor) returns 0 if ready to execute |
1700 | * ATA command, else 1 to finish translation. If 1 is returned | |
1701 | * then cmd->result (and possibly cmd->sense_buffer) are assumed | |
1702 | * to be set reflecting an error condition or clean (early) | |
1703 | * termination. | |
1704 | * | |
1da177e4 | 1705 | * LOCKING: |
cca3974e | 1706 | * spin_lock_irqsave(host lock) |
2115ea94 TH |
1707 | * |
1708 | * RETURNS: | |
1709 | * 0 on success, SCSI_ML_QUEUE_DEVICE_BUSY if the command | |
1710 | * needs to be deferred. | |
1da177e4 | 1711 | */ |
2115ea94 | 1712 | static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd, |
2115ea94 | 1713 | ata_xlat_func_t xlat_func) |
1da177e4 | 1714 | { |
31cc23b3 | 1715 | struct ata_port *ap = dev->link->ap; |
1da177e4 | 1716 | struct ata_queued_cmd *qc; |
31cc23b3 | 1717 | int rc; |
1da177e4 | 1718 | |
b27dcfb0 | 1719 | qc = ata_scsi_qc_new(dev, cmd); |
1da177e4 | 1720 | if (!qc) |
ae006510 | 1721 | goto err_mem; |
1da177e4 LT |
1722 | |
1723 | /* data is present; dma-map it */ | |
be7db055 CH |
1724 | if (cmd->sc_data_direction == DMA_FROM_DEVICE || |
1725 | cmd->sc_data_direction == DMA_TO_DEVICE) { | |
7120165c | 1726 | if (unlikely(scsi_bufflen(cmd) < 1)) { |
a9a79dfe | 1727 | ata_dev_warn(dev, "WARNING: zero len r/w req\n"); |
ae006510 | 1728 | goto err_did; |
1da177e4 LT |
1729 | } |
1730 | ||
7120165c | 1731 | ata_sg_init(qc, scsi_sglist(cmd), scsi_sg_count(cmd)); |
1da177e4 LT |
1732 | |
1733 | qc->dma_dir = cmd->sc_data_direction; | |
1734 | } | |
1735 | ||
1736 | qc->complete_fn = ata_scsi_qc_complete; | |
1737 | ||
ad706991 | 1738 | if (xlat_func(qc)) |
ae006510 | 1739 | goto early_finish; |
1da177e4 | 1740 | |
31cc23b3 TH |
1741 | if (ap->ops->qc_defer) { |
1742 | if ((rc = ap->ops->qc_defer(qc))) | |
1743 | goto defer; | |
1744 | } | |
1745 | ||
1da177e4 | 1746 | /* select device, send command to hardware */ |
8e0e694a | 1747 | ata_qc_issue(qc); |
1da177e4 | 1748 | |
2115ea94 | 1749 | return 0; |
1da177e4 | 1750 | |
ae006510 | 1751 | early_finish: |
2dcb407e | 1752 | ata_qc_free(qc); |
58bf201d | 1753 | scsi_done(cmd); |
2115ea94 | 1754 | return 0; |
ae006510 DG |
1755 | |
1756 | err_did: | |
1da177e4 | 1757 | ata_qc_free(qc); |
ae006510 | 1758 | cmd->result = (DID_ERROR << 16); |
58bf201d | 1759 | scsi_done(cmd); |
253b92ec | 1760 | err_mem: |
2115ea94 | 1761 | return 0; |
3dc1d881 TH |
1762 | |
1763 | defer: | |
31cc23b3 | 1764 | ata_qc_free(qc); |
31cc23b3 TH |
1765 | if (rc == ATA_DEFER_LINK) |
1766 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
1767 | else | |
1768 | return SCSI_MLQUEUE_HOST_BUSY; | |
1da177e4 LT |
1769 | } |
1770 | ||
f0a37d12 CH |
1771 | struct ata_scsi_args { |
1772 | struct ata_device *dev; | |
1773 | u16 *id; | |
1774 | struct scsi_cmnd *cmd; | |
f0a37d12 CH |
1775 | }; |
1776 | ||
1da177e4 LT |
1777 | /** |
1778 | * ata_scsi_rbuf_fill - wrapper for SCSI command simulators | |
1779 | * @args: device IDENTIFY data / SCSI command of interest. | |
1780 | * @actor: Callback hook for desired SCSI command simulator | |
1781 | * | |
1782 | * Takes care of the hard work of simulating a SCSI command... | |
1783 | * Mapping the response buffer, calling the command's handler, | |
1784 | * and handling the handler's return value. This return value | |
1785 | * indicates whether the handler wishes the SCSI command to be | |
ae006510 DG |
1786 | * completed successfully (0), or not (in which case cmd->result |
1787 | * and sense buffer are assumed to be set). | |
1da177e4 LT |
1788 | * |
1789 | * LOCKING: | |
cca3974e | 1790 | * spin_lock_irqsave(host lock) |
1da177e4 | 1791 | */ |
f0761be3 | 1792 | static void ata_scsi_rbuf_fill(struct ata_scsi_args *args, |
87340e98 | 1793 | unsigned int (*actor)(struct ata_scsi_args *args, u8 *rbuf)) |
1da177e4 | 1794 | { |
87340e98 | 1795 | unsigned int rc; |
1da177e4 | 1796 | struct scsi_cmnd *cmd = args->cmd; |
b445c568 JG |
1797 | unsigned long flags; |
1798 | ||
56b4f06c DLM |
1799 | spin_lock_irqsave(&ata_scsi_rbuf_lock, flags); |
1800 | ||
1801 | memset(ata_scsi_rbuf, 0, ATA_SCSI_RBUF_SIZE); | |
1802 | rc = actor(args, ata_scsi_rbuf); | |
1803 | if (rc == 0) | |
1804 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), | |
1805 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); | |
1806 | ||
1807 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, flags); | |
b445c568 | 1808 | |
ae006510 | 1809 | if (rc == 0) |
1da177e4 | 1810 | cmd->result = SAM_STAT_GOOD; |
1da177e4 LT |
1811 | } |
1812 | ||
1813 | /** | |
1814 | * ata_scsiop_inq_std - Simulate INQUIRY command | |
1815 | * @args: device IDENTIFY data / SCSI command of interest. | |
1816 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
1817 | * |
1818 | * Returns standard device identification data associated | |
b142eb65 | 1819 | * with non-VPD INQUIRY command output. |
1da177e4 LT |
1820 | * |
1821 | * LOCKING: | |
cca3974e | 1822 | * spin_lock_irqsave(host lock) |
1da177e4 | 1823 | */ |
87340e98 | 1824 | static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 1825 | { |
e94f7914 | 1826 | static const u8 versions[] = { |
f9ca5ab8 | 1827 | 0x00, |
87340e98 TH |
1828 | 0x60, /* SAM-3 (no version claimed) */ |
1829 | ||
1830 | 0x03, | |
1831 | 0x20, /* SBC-2 (no version claimed) */ | |
1832 | ||
29a37ea4 TY |
1833 | 0x03, |
1834 | 0x00 /* SPC-3 (no version claimed) */ | |
87340e98 | 1835 | }; |
e94f7914 | 1836 | static const u8 versions_zbc[] = { |
f9ca5ab8 HR |
1837 | 0x00, |
1838 | 0xA0, /* SAM-5 (no version claimed) */ | |
1839 | ||
856c4663 HR |
1840 | 0x06, |
1841 | 0x00, /* SBC-4 (no version claimed) */ | |
f9ca5ab8 | 1842 | |
856c4663 HR |
1843 | 0x05, |
1844 | 0xC0, /* SPC-5 (no version claimed) */ | |
f9ca5ab8 HR |
1845 | |
1846 | 0x60, | |
856c4663 | 1847 | 0x24, /* ZBC r05 */ |
f9ca5ab8 HR |
1848 | }; |
1849 | ||
1da177e4 LT |
1850 | u8 hdr[] = { |
1851 | TYPE_DISK, | |
1852 | 0, | |
1853 | 0x5, /* claim SPC-3 version compatibility */ | |
1854 | 2, | |
415ffdde TY |
1855 | 95 - 4, |
1856 | 0, | |
1857 | 0, | |
1858 | 2 | |
1da177e4 LT |
1859 | }; |
1860 | ||
8a3e33cf ML |
1861 | /* set scsi removable (RMB) bit per ata bit, or if the |
1862 | * AHCI port says it's external (Hotplug-capable, eSATA). | |
1863 | */ | |
1864 | if (ata_id_removable(args->id) || | |
1865 | (args->dev->link->ap->pflags & ATA_PFLAG_EXTERNAL)) | |
1da177e4 LT |
1866 | hdr[1] |= (1 << 7); |
1867 | ||
56b8cbab | 1868 | if (args->dev->class == ATA_DEV_ZAC) { |
f9ca5ab8 | 1869 | hdr[0] = TYPE_ZBC; |
56b8cbab TY |
1870 | hdr[2] = 0x7; /* claim SPC-5 version compatibility */ |
1871 | } | |
f9ca5ab8 | 1872 | |
2132df16 DLM |
1873 | if (args->dev->flags & ATA_DFLAG_CDL) |
1874 | hdr[2] = 0xd; /* claim SPC-6 version compatibility */ | |
1875 | ||
1da177e4 | 1876 | memcpy(rbuf, hdr, sizeof(hdr)); |
87340e98 TH |
1877 | memcpy(&rbuf[8], "ATA ", 8); |
1878 | ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16); | |
c49a6bf5 KB |
1879 | |
1880 | /* From SAT, use last 2 words from fw rev unless they are spaces */ | |
1881 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV + 2, 4); | |
1882 | if (strncmp(&rbuf[32], " ", 4) == 0) | |
1883 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4); | |
1da177e4 | 1884 | |
87340e98 TH |
1885 | if (rbuf[32] == 0 || rbuf[32] == ' ') |
1886 | memcpy(&rbuf[32], "n/a ", 4); | |
1da177e4 | 1887 | |
856c4663 | 1888 | if (ata_id_zoned_cap(args->id) || args->dev->class == ATA_DEV_ZAC) |
f9ca5ab8 HR |
1889 | memcpy(rbuf + 58, versions_zbc, sizeof(versions_zbc)); |
1890 | else | |
1891 | memcpy(rbuf + 58, versions, sizeof(versions)); | |
1da177e4 LT |
1892 | |
1893 | return 0; | |
1894 | } | |
1895 | ||
1896 | /** | |
b142eb65 | 1897 | * ata_scsiop_inq_00 - Simulate INQUIRY VPD page 0, list of pages |
1da177e4 LT |
1898 | * @args: device IDENTIFY data / SCSI command of interest. |
1899 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 1900 | * |
b142eb65 | 1901 | * Returns list of inquiry VPD pages available. |
1da177e4 LT |
1902 | * |
1903 | * LOCKING: | |
cca3974e | 1904 | * spin_lock_irqsave(host lock) |
1da177e4 | 1905 | */ |
87340e98 | 1906 | static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 1907 | { |
fe22e1c2 | 1908 | int i, num_pages = 0; |
e94f7914 | 1909 | static const u8 pages[] = { |
1da177e4 LT |
1910 | 0x00, /* page 0x00, this page */ |
1911 | 0x80, /* page 0x80, unit serial no page */ | |
1e9dbc92 MW |
1912 | 0x83, /* page 0x83, device ident page */ |
1913 | 0x89, /* page 0x89, ata info page */ | |
18f0f978 | 1914 | 0xb0, /* page 0xb0, block limits page */ |
1e9dbc92 | 1915 | 0xb1, /* page 0xb1, block device characteristics page */ |
02e0a604 | 1916 | 0xb2, /* page 0xb2, thin provisioning page */ |
6d1003ae | 1917 | 0xb6, /* page 0xb6, zoned block device characteristics */ |
fe22e1c2 | 1918 | 0xb9, /* page 0xb9, concurrent positioning ranges */ |
1da177e4 | 1919 | }; |
1da177e4 | 1920 | |
fe22e1c2 DLM |
1921 | for (i = 0; i < sizeof(pages); i++) { |
1922 | if (pages[i] == 0xb6 && | |
1923 | !(args->dev->flags & ATA_DFLAG_ZAC)) | |
1924 | continue; | |
1925 | rbuf[num_pages + 4] = pages[i]; | |
1926 | num_pages++; | |
1927 | } | |
6d1003ae | 1928 | rbuf[3] = num_pages; /* number of supported VPD pages */ |
1da177e4 LT |
1929 | return 0; |
1930 | } | |
1931 | ||
1932 | /** | |
b142eb65 | 1933 | * ata_scsiop_inq_80 - Simulate INQUIRY VPD page 80, device serial number |
1da177e4 LT |
1934 | * @args: device IDENTIFY data / SCSI command of interest. |
1935 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
1936 | * |
1937 | * Returns ATA device serial number. | |
1938 | * | |
1939 | * LOCKING: | |
cca3974e | 1940 | * spin_lock_irqsave(host lock) |
1da177e4 | 1941 | */ |
87340e98 | 1942 | static unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 1943 | { |
e94f7914 | 1944 | static const u8 hdr[] = { |
1da177e4 LT |
1945 | 0, |
1946 | 0x80, /* this page code */ | |
1947 | 0, | |
a0cf733b | 1948 | ATA_ID_SERNO_LEN, /* page len */ |
1da177e4 | 1949 | }; |
1da177e4 | 1950 | |
87340e98 TH |
1951 | memcpy(rbuf, hdr, sizeof(hdr)); |
1952 | ata_id_string(args->id, (unsigned char *) &rbuf[4], | |
1953 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
1da177e4 LT |
1954 | return 0; |
1955 | } | |
1956 | ||
1da177e4 | 1957 | /** |
b142eb65 | 1958 | * ata_scsiop_inq_83 - Simulate INQUIRY VPD page 83, device identity |
1da177e4 LT |
1959 | * @args: device IDENTIFY data / SCSI command of interest. |
1960 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 1961 | * |
b142eb65 JG |
1962 | * Yields two logical unit device identification designators: |
1963 | * - vendor specific ASCII containing the ATA serial number | |
1964 | * - SAT defined "t10 vendor id based" containing ASCII vendor | |
1965 | * name ("ATA "), model and serial numbers. | |
1da177e4 LT |
1966 | * |
1967 | * LOCKING: | |
cca3974e | 1968 | * spin_lock_irqsave(host lock) |
1da177e4 | 1969 | */ |
87340e98 | 1970 | static unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 1971 | { |
b142eb65 | 1972 | const int sat_model_serial_desc_len = 68; |
87340e98 | 1973 | int num; |
1da177e4 | 1974 | |
b142eb65 JG |
1975 | rbuf[1] = 0x83; /* this page code */ |
1976 | num = 4; | |
1977 | ||
87340e98 TH |
1978 | /* piv=0, assoc=lu, code_set=ACSII, designator=vendor */ |
1979 | rbuf[num + 0] = 2; | |
1980 | rbuf[num + 3] = ATA_ID_SERNO_LEN; | |
1981 | num += 4; | |
1982 | ata_id_string(args->id, (unsigned char *) rbuf + num, | |
1983 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
1984 | num += ATA_ID_SERNO_LEN; | |
1985 | ||
1986 | /* SAT defined lu model and serial numbers descriptor */ | |
1987 | /* piv=0, assoc=lu, code_set=ACSII, designator=t10 vendor id */ | |
1988 | rbuf[num + 0] = 2; | |
1989 | rbuf[num + 1] = 1; | |
1990 | rbuf[num + 3] = sat_model_serial_desc_len; | |
1991 | num += 4; | |
1992 | memcpy(rbuf + num, "ATA ", 8); | |
1993 | num += 8; | |
1994 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_PROD, | |
1995 | ATA_ID_PROD_LEN); | |
1996 | num += ATA_ID_PROD_LEN; | |
1997 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_SERNO, | |
1998 | ATA_ID_SERNO_LEN); | |
1999 | num += ATA_ID_SERNO_LEN; | |
2000 | ||
6b3b9d73 HR |
2001 | if (ata_id_has_wwn(args->id)) { |
2002 | /* SAT defined lu world wide name */ | |
2003 | /* piv=0, assoc=lu, code_set=binary, designator=NAA */ | |
2004 | rbuf[num + 0] = 1; | |
2005 | rbuf[num + 1] = 3; | |
2006 | rbuf[num + 3] = ATA_ID_WWN_LEN; | |
2007 | num += 4; | |
2008 | ata_id_string(args->id, (unsigned char *) rbuf + num, | |
2009 | ATA_ID_WWN, ATA_ID_WWN_LEN); | |
2010 | num += ATA_ID_WWN_LEN; | |
2011 | } | |
b142eb65 | 2012 | rbuf[3] = num - 4; /* page len (assume less than 256 bytes) */ |
1da177e4 LT |
2013 | return 0; |
2014 | } | |
2015 | ||
ad355b46 JG |
2016 | /** |
2017 | * ata_scsiop_inq_89 - Simulate INQUIRY VPD page 89, ATA info | |
2018 | * @args: device IDENTIFY data / SCSI command of interest. | |
2019 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
ad355b46 JG |
2020 | * |
2021 | * Yields SAT-specified ATA VPD page. | |
2022 | * | |
2023 | * LOCKING: | |
2024 | * spin_lock_irqsave(host lock) | |
2025 | */ | |
87340e98 | 2026 | static unsigned int ata_scsiop_inq_89(struct ata_scsi_args *args, u8 *rbuf) |
ad355b46 | 2027 | { |
87340e98 TH |
2028 | rbuf[1] = 0x89; /* our page code */ |
2029 | rbuf[2] = (0x238 >> 8); /* page size fixed at 238h */ | |
2030 | rbuf[3] = (0x238 & 0xff); | |
ad355b46 | 2031 | |
87340e98 TH |
2032 | memcpy(&rbuf[8], "linux ", 8); |
2033 | memcpy(&rbuf[16], "libata ", 16); | |
2034 | memcpy(&rbuf[32], DRV_VERSION, 4); | |
ad355b46 | 2035 | |
87340e98 | 2036 | rbuf[36] = 0x34; /* force D2H Reg FIS (34h) */ |
33531001 BZ |
2037 | rbuf[37] = (1 << 7); /* bit 7 indicates Command FIS */ |
2038 | /* TODO: PMP? */ | |
2039 | ||
2040 | /* we don't store the ATA device signature, so we fake it */ | |
2041 | rbuf[38] = ATA_DRDY; /* really, this is Status reg */ | |
2042 | rbuf[40] = 0x1; | |
2043 | rbuf[48] = 0x1; | |
ad355b46 | 2044 | |
87340e98 | 2045 | rbuf[56] = ATA_CMD_ID_ATA; |
ad355b46 | 2046 | |
87340e98 | 2047 | memcpy(&rbuf[60], &args->id[0], 512); |
ad355b46 JG |
2048 | return 0; |
2049 | } | |
2050 | ||
18f0f978 CH |
2051 | static unsigned int ata_scsiop_inq_b0(struct ata_scsi_args *args, u8 *rbuf) |
2052 | { | |
3b545563 | 2053 | struct ata_device *dev = args->dev; |
295124dc | 2054 | u16 min_io_sectors; |
18f0f978 CH |
2055 | |
2056 | rbuf[1] = 0xb0; | |
2057 | rbuf[3] = 0x3c; /* required VPD size with unmap support */ | |
2058 | ||
2059 | /* | |
2060 | * Optimal transfer length granularity. | |
2061 | * | |
2062 | * This is always one physical block, but for disks with a smaller | |
2063 | * logical than physical sector size we need to figure out what the | |
2064 | * latter is. | |
2065 | */ | |
295124dc | 2066 | min_io_sectors = 1 << ata_id_log2_per_physical_sector(args->id); |
18f0f978 CH |
2067 | put_unaligned_be16(min_io_sectors, &rbuf[6]); |
2068 | ||
2069 | /* | |
2070 | * Optimal unmap granularity. | |
2071 | * | |
2072 | * The ATA spec doesn't even know about a granularity or alignment | |
2073 | * for the TRIM command. We can leave away most of the unmap related | |
2074 | * VPD page entries, but we have specifify a granularity to signal | |
2075 | * that we support some form of unmap - in thise case via WRITE SAME | |
2076 | * with the unmap bit set. | |
2077 | */ | |
e78db4df | 2078 | if (ata_id_has_trim(args->id)) { |
3b545563 TH |
2079 | u64 max_blocks = 65535 * ATA_MAX_TRIM_RNUM; |
2080 | ||
2081 | if (dev->horkage & ATA_HORKAGE_MAX_TRIM_128M) | |
2082 | max_blocks = 128 << (20 - SECTOR_SHIFT); | |
2083 | ||
2084 | put_unaligned_be64(max_blocks, &rbuf[36]); | |
18f0f978 | 2085 | put_unaligned_be32(1, &rbuf[28]); |
e78db4df | 2086 | } |
18f0f978 CH |
2087 | |
2088 | return 0; | |
2089 | } | |
2090 | ||
1e9dbc92 MW |
2091 | static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf) |
2092 | { | |
4bca3286 MP |
2093 | int form_factor = ata_id_form_factor(args->id); |
2094 | int media_rotation_rate = ata_id_rotation_rate(args->id); | |
856c4663 | 2095 | u8 zoned = ata_id_zoned_cap(args->id); |
4bca3286 | 2096 | |
1e9dbc92 MW |
2097 | rbuf[1] = 0xb1; |
2098 | rbuf[3] = 0x3c; | |
4bca3286 MP |
2099 | rbuf[4] = media_rotation_rate >> 8; |
2100 | rbuf[5] = media_rotation_rate; | |
2101 | rbuf[7] = form_factor; | |
856c4663 HR |
2102 | if (zoned) |
2103 | rbuf[8] = (zoned << 4); | |
1e9dbc92 MW |
2104 | |
2105 | return 0; | |
2106 | } | |
2107 | ||
02e0a604 MP |
2108 | static unsigned int ata_scsiop_inq_b2(struct ata_scsi_args *args, u8 *rbuf) |
2109 | { | |
2110 | /* SCSI Thin Provisioning VPD page: SBC-3 rev 22 or later */ | |
2111 | rbuf[1] = 0xb2; | |
2112 | rbuf[3] = 0x4; | |
2113 | rbuf[5] = 1 << 6; /* TPWS */ | |
2114 | ||
2115 | return 0; | |
2116 | } | |
2117 | ||
6d1003ae HR |
2118 | static unsigned int ata_scsiop_inq_b6(struct ata_scsi_args *args, u8 *rbuf) |
2119 | { | |
2120 | /* | |
2121 | * zbc-r05 SCSI Zoned Block device characteristics VPD page | |
2122 | */ | |
2123 | rbuf[1] = 0xb6; | |
2124 | rbuf[3] = 0x3C; | |
2125 | ||
2126 | /* | |
2127 | * URSWRZ bit is only meaningful for host-managed ZAC drives | |
2128 | */ | |
2129 | if (args->dev->zac_zoned_cap & 1) | |
2130 | rbuf[4] |= 1; | |
2131 | put_unaligned_be32(args->dev->zac_zones_optimal_open, &rbuf[8]); | |
2132 | put_unaligned_be32(args->dev->zac_zones_optimal_nonseq, &rbuf[12]); | |
2133 | put_unaligned_be32(args->dev->zac_zones_max_open, &rbuf[16]); | |
2134 | ||
2135 | return 0; | |
2136 | } | |
2137 | ||
fe22e1c2 DLM |
2138 | static unsigned int ata_scsiop_inq_b9(struct ata_scsi_args *args, u8 *rbuf) |
2139 | { | |
2140 | struct ata_cpr_log *cpr_log = args->dev->cpr_log; | |
2141 | u8 *desc = &rbuf[64]; | |
2142 | int i; | |
2143 | ||
2144 | /* SCSI Concurrent Positioning Ranges VPD page: SBC-5 rev 1 or later */ | |
2145 | rbuf[1] = 0xb9; | |
6d11acd4 | 2146 | put_unaligned_be16(64 + (int)cpr_log->nr_cpr * 32 - 4, &rbuf[2]); |
fe22e1c2 DLM |
2147 | |
2148 | for (i = 0; i < cpr_log->nr_cpr; i++, desc += 32) { | |
2149 | desc[0] = cpr_log->cpr[i].num; | |
2150 | desc[1] = cpr_log->cpr[i].num_storage_elements; | |
2151 | put_unaligned_be64(cpr_log->cpr[i].start_lba, &desc[8]); | |
2152 | put_unaligned_be64(cpr_log->cpr[i].num_lbas, &desc[16]); | |
2153 | } | |
2154 | ||
2155 | return 0; | |
2156 | } | |
2157 | ||
6ca8e794 PB |
2158 | /** |
2159 | * modecpy - Prepare response for MODE SENSE | |
2160 | * @dest: output buffer | |
2161 | * @src: data being copied | |
2162 | * @n: length of mode page | |
2163 | * @changeable: whether changeable parameters are requested | |
2164 | * | |
2165 | * Generate a generic MODE SENSE page for either current or changeable | |
2166 | * parameters. | |
2167 | * | |
2168 | * LOCKING: | |
2169 | * None. | |
2170 | */ | |
2171 | static void modecpy(u8 *dest, const u8 *src, int n, bool changeable) | |
2172 | { | |
2173 | if (changeable) { | |
2174 | memcpy(dest, src, 2); | |
2175 | memset(dest + 2, 0, n - 2); | |
2176 | } else { | |
2177 | memcpy(dest, src, n); | |
2178 | } | |
2179 | } | |
2180 | ||
1da177e4 LT |
2181 | /** |
2182 | * ata_msense_caching - Simulate MODE SENSE caching info page | |
2183 | * @id: device IDENTIFY data | |
87340e98 | 2184 | * @buf: output buffer |
6ca8e794 | 2185 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2186 | * |
2187 | * Generate a caching info page, which conditionally indicates | |
2188 | * write caching to the SCSI layer, depending on device | |
2189 | * capabilities. | |
2190 | * | |
2191 | * LOCKING: | |
2192 | * None. | |
2193 | */ | |
6ca8e794 | 2194 | static unsigned int ata_msense_caching(u16 *id, u8 *buf, bool changeable) |
1da177e4 | 2195 | { |
6ca8e794 | 2196 | modecpy(buf, def_cache_mpage, sizeof(def_cache_mpage), changeable); |
737bee93 TY |
2197 | if (changeable) { |
2198 | buf[2] |= (1 << 2); /* ata_mselect_caching() */ | |
2199 | } else { | |
2200 | buf[2] |= (ata_id_wcache_enabled(id) << 2); /* write cache enable */ | |
2201 | buf[12] |= (!ata_id_rahead_enabled(id) << 5); /* disable read ahead */ | |
2202 | } | |
87340e98 | 2203 | return sizeof(def_cache_mpage); |
1da177e4 LT |
2204 | } |
2205 | ||
673b2fe6 DLM |
2206 | /* |
2207 | * Simulate MODE SENSE control mode page, sub-page 0. | |
2208 | */ | |
2209 | static unsigned int ata_msense_control_spg0(struct ata_device *dev, u8 *buf, | |
2210 | bool changeable) | |
2211 | { | |
2212 | modecpy(buf, def_control_mpage, | |
2213 | sizeof(def_control_mpage), changeable); | |
2214 | if (changeable) { | |
2215 | /* ata_mselect_control() */ | |
2216 | buf[2] |= (1 << 2); | |
2217 | } else { | |
2218 | bool d_sense = (dev->flags & ATA_DFLAG_D_SENSE); | |
2219 | ||
2220 | /* descriptor format sense data */ | |
2221 | buf[2] |= (d_sense << 2); | |
2222 | } | |
2223 | ||
2224 | return sizeof(def_control_mpage); | |
2225 | } | |
2226 | ||
2227 | /* | |
2228 | * Translate an ATA duration limit in microseconds to a SCSI duration limit | |
2229 | * using the t2cdlunits 0xa (10ms). Since the SCSI duration limits are 2-bytes | |
2230 | * only, take care of overflows. | |
2231 | */ | |
2232 | static inline u16 ata_xlat_cdl_limit(u8 *buf) | |
2233 | { | |
2234 | u32 limit = get_unaligned_le32(buf); | |
2235 | ||
2236 | return min_t(u32, limit / 10000, 65535); | |
2237 | } | |
2238 | ||
2239 | /* | |
2240 | * Simulate MODE SENSE control mode page, sub-pages 07h and 08h | |
2241 | * (command duration limits T2A and T2B mode pages). | |
2242 | */ | |
2243 | static unsigned int ata_msense_control_spgt2(struct ata_device *dev, u8 *buf, | |
2244 | u8 spg) | |
2245 | { | |
2246 | u8 *b, *cdl = dev->cdl, *desc; | |
2247 | u32 policy; | |
2248 | int i; | |
2249 | ||
2250 | /* | |
2251 | * Fill the subpage. The first four bytes of the T2A/T2B mode pages | |
2252 | * are a header. The PAGE LENGTH field is the size of the page | |
2253 | * excluding the header. | |
2254 | */ | |
2255 | buf[0] = CONTROL_MPAGE; | |
2256 | buf[1] = spg; | |
2257 | put_unaligned_be16(CDL_T2_SUB_MPAGE_LEN - 4, &buf[2]); | |
2258 | if (spg == CDL_T2A_SUB_MPAGE) { | |
2259 | /* | |
2260 | * Read descriptors map to the T2A page: | |
2261 | * set perf_vs_duration_guidleine. | |
2262 | */ | |
2263 | buf[7] = (cdl[0] & 0x03) << 4; | |
2264 | desc = cdl + 64; | |
2265 | } else { | |
2266 | /* Write descriptors map to the T2B page */ | |
2267 | desc = cdl + 288; | |
2268 | } | |
2269 | ||
2270 | /* Fill the T2 page descriptors */ | |
2271 | b = &buf[8]; | |
2272 | policy = get_unaligned_le32(&cdl[0]); | |
2273 | for (i = 0; i < 7; i++, b += 32, desc += 32) { | |
2274 | /* t2cdlunits: fixed to 10ms */ | |
2275 | b[0] = 0x0a; | |
2276 | ||
2277 | /* Max inactive time and its policy */ | |
2278 | put_unaligned_be16(ata_xlat_cdl_limit(&desc[8]), &b[2]); | |
2279 | b[6] = ((policy >> 8) & 0x0f) << 4; | |
2280 | ||
2281 | /* Max active time and its policy */ | |
2282 | put_unaligned_be16(ata_xlat_cdl_limit(&desc[4]), &b[4]); | |
2283 | b[6] |= (policy >> 4) & 0x0f; | |
2284 | ||
2285 | /* Command duration guideline and its policy */ | |
2286 | put_unaligned_be16(ata_xlat_cdl_limit(&desc[16]), &b[10]); | |
2287 | b[14] = policy & 0x0f; | |
2288 | } | |
2289 | ||
2290 | return CDL_T2_SUB_MPAGE_LEN; | |
2291 | } | |
2292 | ||
df60f9c6 DLM |
2293 | /* |
2294 | * Simulate MODE SENSE control mode page, sub-page f2h | |
2295 | * (ATA feature control mode page). | |
2296 | */ | |
2297 | static unsigned int ata_msense_control_ata_feature(struct ata_device *dev, | |
2298 | u8 *buf) | |
2299 | { | |
2300 | /* PS=0, SPF=1 */ | |
2301 | buf[0] = CONTROL_MPAGE | (1 << 6); | |
2302 | buf[1] = ATA_FEATURE_SUB_MPAGE; | |
2303 | ||
2304 | /* | |
2305 | * The first four bytes of ATA Feature Control mode page are a header. | |
2306 | * The PAGE LENGTH field is the size of the page excluding the header. | |
2307 | */ | |
2308 | put_unaligned_be16(ATA_FEATURE_SUB_MPAGE_LEN - 4, &buf[2]); | |
2309 | ||
2310 | if (dev->flags & ATA_DFLAG_CDL) | |
2311 | buf[4] = 0x02; /* Support T2A and T2B pages */ | |
2312 | else | |
2313 | buf[4] = 0; | |
2314 | ||
2315 | return ATA_FEATURE_SUB_MPAGE_LEN; | |
2316 | } | |
2317 | ||
1da177e4 | 2318 | /** |
f086b748 | 2319 | * ata_msense_control - Simulate MODE SENSE control mode page |
06dbde5f | 2320 | * @dev: ATA device of interest |
87340e98 | 2321 | * @buf: output buffer |
673b2fe6 | 2322 | * @spg: sub-page code |
6ca8e794 | 2323 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2324 | * |
2325 | * Generate a generic MODE SENSE control mode page. | |
2326 | * | |
2327 | * LOCKING: | |
2328 | * None. | |
2329 | */ | |
f086b748 | 2330 | static unsigned int ata_msense_control(struct ata_device *dev, u8 *buf, |
673b2fe6 DLM |
2331 | u8 spg, bool changeable) |
2332 | { | |
2333 | unsigned int n; | |
2334 | ||
2335 | switch (spg) { | |
2336 | case 0: | |
2337 | return ata_msense_control_spg0(dev, buf, changeable); | |
2338 | case CDL_T2A_SUB_MPAGE: | |
2339 | case CDL_T2B_SUB_MPAGE: | |
2340 | return ata_msense_control_spgt2(dev, buf, spg); | |
df60f9c6 DLM |
2341 | case ATA_FEATURE_SUB_MPAGE: |
2342 | return ata_msense_control_ata_feature(dev, buf); | |
673b2fe6 DLM |
2343 | case ALL_SUB_MPAGES: |
2344 | n = ata_msense_control_spg0(dev, buf, changeable); | |
2345 | n += ata_msense_control_spgt2(dev, buf + n, CDL_T2A_SUB_MPAGE); | |
2346 | n += ata_msense_control_spgt2(dev, buf + n, CDL_T2A_SUB_MPAGE); | |
df60f9c6 | 2347 | n += ata_msense_control_ata_feature(dev, buf + n); |
673b2fe6 DLM |
2348 | return n; |
2349 | default: | |
2350 | return 0; | |
737bee93 | 2351 | } |
1da177e4 LT |
2352 | } |
2353 | ||
2354 | /** | |
2355 | * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page | |
ec2a20e6 | 2356 | * @buf: output buffer |
6ca8e794 | 2357 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2358 | * |
2359 | * Generate a generic MODE SENSE r/w error recovery page. | |
2360 | * | |
2361 | * LOCKING: | |
2362 | * None. | |
2363 | */ | |
6ca8e794 | 2364 | static unsigned int ata_msense_rw_recovery(u8 *buf, bool changeable) |
1da177e4 | 2365 | { |
6ca8e794 PB |
2366 | modecpy(buf, def_rw_recovery_mpage, sizeof(def_rw_recovery_mpage), |
2367 | changeable); | |
00ac37f5 | 2368 | return sizeof(def_rw_recovery_mpage); |
1da177e4 LT |
2369 | } |
2370 | ||
2371 | /** | |
2372 | * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands | |
2373 | * @args: device IDENTIFY data / SCSI command of interest. | |
2374 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 2375 | * |
00ac37f5 DG |
2376 | * Simulate MODE SENSE commands. Assume this is invoked for direct |
2377 | * access devices (e.g. disks) only. There should be no block | |
2378 | * descriptor for other device types. | |
1da177e4 LT |
2379 | * |
2380 | * LOCKING: | |
cca3974e | 2381 | * spin_lock_irqsave(host lock) |
1da177e4 | 2382 | */ |
87340e98 | 2383 | static unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2384 | { |
9a3dccc4 | 2385 | struct ata_device *dev = args->dev; |
87340e98 | 2386 | u8 *scsicmd = args->cmd->cmnd, *p = rbuf; |
e94f7914 | 2387 | static const u8 sat_blk_desc[] = { |
00ac37f5 DG |
2388 | 0, 0, 0, 0, /* number of blocks: sat unspecified */ |
2389 | 0, | |
2390 | 0, 0x2, 0x0 /* block length: 512 bytes */ | |
2391 | }; | |
2392 | u8 pg, spg; | |
87340e98 | 2393 | unsigned int ebd, page_control, six_byte; |
4d2e4980 | 2394 | u8 dpofua = 0, bp = 0xff; |
bcfc867d | 2395 | u16 fp; |
1da177e4 | 2396 | |
1da177e4 | 2397 | six_byte = (scsicmd[0] == MODE_SENSE); |
00ac37f5 DG |
2398 | ebd = !(scsicmd[1] & 0x8); /* dbd bit inverted == edb */ |
2399 | /* | |
2400 | * LLBA bit in msense(10) ignored (compliant) | |
1da177e4 | 2401 | */ |
00ac37f5 | 2402 | |
1da177e4 | 2403 | page_control = scsicmd[2] >> 6; |
ae006510 DG |
2404 | switch (page_control) { |
2405 | case 0: /* current */ | |
6ca8e794 PB |
2406 | case 1: /* changeable */ |
2407 | case 2: /* defaults */ | |
ae006510 DG |
2408 | break; /* supported */ |
2409 | case 3: /* saved */ | |
2410 | goto saving_not_supp; | |
ae006510 | 2411 | default: |
bcfc867d | 2412 | fp = 2; |
0df10b84 | 2413 | bp = 6; |
ae006510 DG |
2414 | goto invalid_fld; |
2415 | } | |
1da177e4 | 2416 | |
87340e98 TH |
2417 | if (six_byte) |
2418 | p += 4 + (ebd ? 8 : 0); | |
2419 | else | |
2420 | p += 8 + (ebd ? 8 : 0); | |
1da177e4 | 2421 | |
00ac37f5 DG |
2422 | pg = scsicmd[2] & 0x3f; |
2423 | spg = scsicmd[3]; | |
673b2fe6 | 2424 | |
00ac37f5 | 2425 | /* |
df60f9c6 | 2426 | * Supported subpages: all subpages and sub-pages 07h, 08h and f2h of |
673b2fe6 | 2427 | * the control page. |
00ac37f5 | 2428 | */ |
673b2fe6 DLM |
2429 | if (spg) { |
2430 | switch (spg) { | |
2431 | case ALL_SUB_MPAGES: | |
2432 | break; | |
2433 | case CDL_T2A_SUB_MPAGE: | |
2434 | case CDL_T2B_SUB_MPAGE: | |
df60f9c6 | 2435 | case ATA_FEATURE_SUB_MPAGE: |
673b2fe6 DLM |
2436 | if (dev->flags & ATA_DFLAG_CDL && pg == CONTROL_MPAGE) |
2437 | break; | |
2438 | fallthrough; | |
2439 | default: | |
2440 | fp = 3; | |
2441 | goto invalid_fld; | |
2442 | } | |
bcfc867d | 2443 | } |
00ac37f5 DG |
2444 | |
2445 | switch(pg) { | |
2446 | case RW_RECOVERY_MPAGE: | |
6ca8e794 | 2447 | p += ata_msense_rw_recovery(p, page_control == 1); |
1da177e4 LT |
2448 | break; |
2449 | ||
00ac37f5 | 2450 | case CACHE_MPAGE: |
6ca8e794 | 2451 | p += ata_msense_caching(args->id, p, page_control == 1); |
1da177e4 LT |
2452 | break; |
2453 | ||
87340e98 | 2454 | case CONTROL_MPAGE: |
673b2fe6 | 2455 | p += ata_msense_control(args->dev, p, spg, page_control == 1); |
1da177e4 | 2456 | break; |
1da177e4 | 2457 | |
00ac37f5 | 2458 | case ALL_MPAGES: |
6ca8e794 PB |
2459 | p += ata_msense_rw_recovery(p, page_control == 1); |
2460 | p += ata_msense_caching(args->id, p, page_control == 1); | |
673b2fe6 | 2461 | p += ata_msense_control(args->dev, p, spg, page_control == 1); |
1da177e4 LT |
2462 | break; |
2463 | ||
2464 | default: /* invalid page code */ | |
bcfc867d | 2465 | fp = 2; |
ae006510 | 2466 | goto invalid_fld; |
1da177e4 LT |
2467 | } |
2468 | ||
4d2e4980 | 2469 | if (dev->flags & ATA_DFLAG_FUA) |
9a3dccc4 TH |
2470 | dpofua = 1 << 4; |
2471 | ||
1da177e4 | 2472 | if (six_byte) { |
87340e98 TH |
2473 | rbuf[0] = p - rbuf - 1; |
2474 | rbuf[2] |= dpofua; | |
00ac37f5 | 2475 | if (ebd) { |
87340e98 TH |
2476 | rbuf[3] = sizeof(sat_blk_desc); |
2477 | memcpy(rbuf + 4, sat_blk_desc, sizeof(sat_blk_desc)); | |
00ac37f5 | 2478 | } |
1da177e4 | 2479 | } else { |
673b2fe6 | 2480 | put_unaligned_be16(p - rbuf - 2, &rbuf[0]); |
87340e98 | 2481 | rbuf[3] |= dpofua; |
00ac37f5 | 2482 | if (ebd) { |
87340e98 TH |
2483 | rbuf[7] = sizeof(sat_blk_desc); |
2484 | memcpy(rbuf + 8, sat_blk_desc, sizeof(sat_blk_desc)); | |
00ac37f5 | 2485 | } |
1da177e4 | 2486 | } |
1da177e4 | 2487 | return 0; |
ae006510 DG |
2488 | |
2489 | invalid_fld: | |
0df10b84 | 2490 | ata_scsi_set_invalid_field(dev, args->cmd, fp, bp); |
ae006510 DG |
2491 | return 1; |
2492 | ||
2493 | saving_not_supp: | |
06dbde5f | 2494 | ata_scsi_set_sense(dev, args->cmd, ILLEGAL_REQUEST, 0x39, 0x0); |
ae006510 DG |
2495 | /* "Saving parameters not supported" */ |
2496 | return 1; | |
1da177e4 LT |
2497 | } |
2498 | ||
2499 | /** | |
2500 | * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands | |
2501 | * @args: device IDENTIFY data / SCSI command of interest. | |
2502 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2503 | * |
2504 | * Simulate READ CAPACITY commands. | |
2505 | * | |
2506 | * LOCKING: | |
6a36261e | 2507 | * None. |
1da177e4 | 2508 | */ |
87340e98 | 2509 | static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2510 | { |
61d79a8e MP |
2511 | struct ata_device *dev = args->dev; |
2512 | u64 last_lba = dev->n_sectors - 1; /* LBA of the last block */ | |
295124dc GG |
2513 | u32 sector_size; /* physical sector size in bytes */ |
2514 | u8 log2_per_phys; | |
2515 | u16 lowest_aligned; | |
2516 | ||
2517 | sector_size = ata_id_logical_sector_size(dev->id); | |
2518 | log2_per_phys = ata_id_log2_per_physical_sector(dev->id); | |
2519 | lowest_aligned = ata_id_logical_sector_offset(dev->id, log2_per_phys); | |
1da177e4 | 2520 | |
1da177e4 | 2521 | if (args->cmd->cmnd[0] == READ_CAPACITY) { |
6a36261e TH |
2522 | if (last_lba >= 0xffffffffULL) |
2523 | last_lba = 0xffffffff; | |
0c144d0d | 2524 | |
1da177e4 | 2525 | /* sector count, 32-bit */ |
87340e98 TH |
2526 | rbuf[0] = last_lba >> (8 * 3); |
2527 | rbuf[1] = last_lba >> (8 * 2); | |
2528 | rbuf[2] = last_lba >> (8 * 1); | |
2529 | rbuf[3] = last_lba; | |
1da177e4 LT |
2530 | |
2531 | /* sector size */ | |
295124dc GG |
2532 | rbuf[4] = sector_size >> (8 * 3); |
2533 | rbuf[5] = sector_size >> (8 * 2); | |
2534 | rbuf[6] = sector_size >> (8 * 1); | |
2535 | rbuf[7] = sector_size; | |
1da177e4 LT |
2536 | } else { |
2537 | /* sector count, 64-bit */ | |
87340e98 TH |
2538 | rbuf[0] = last_lba >> (8 * 7); |
2539 | rbuf[1] = last_lba >> (8 * 6); | |
2540 | rbuf[2] = last_lba >> (8 * 5); | |
2541 | rbuf[3] = last_lba >> (8 * 4); | |
2542 | rbuf[4] = last_lba >> (8 * 3); | |
2543 | rbuf[5] = last_lba >> (8 * 2); | |
2544 | rbuf[6] = last_lba >> (8 * 1); | |
2545 | rbuf[7] = last_lba; | |
1da177e4 LT |
2546 | |
2547 | /* sector size */ | |
295124dc GG |
2548 | rbuf[ 8] = sector_size >> (8 * 3); |
2549 | rbuf[ 9] = sector_size >> (8 * 2); | |
2550 | rbuf[10] = sector_size >> (8 * 1); | |
2551 | rbuf[11] = sector_size; | |
61d79a8e MP |
2552 | |
2553 | rbuf[12] = 0; | |
295124dc | 2554 | rbuf[13] = log2_per_phys; |
61d79a8e MP |
2555 | rbuf[14] = (lowest_aligned >> 8) & 0x3f; |
2556 | rbuf[15] = lowest_aligned; | |
18f0f978 | 2557 | |
71d126fd AF |
2558 | if (ata_id_has_trim(args->id) && |
2559 | !(dev->horkage & ATA_HORKAGE_NOTRIM)) { | |
e61f7d1c | 2560 | rbuf[14] |= 0x80; /* LBPME */ |
e78db4df | 2561 | |
e61f7d1c MP |
2562 | if (ata_id_has_zero_after_trim(args->id) && |
2563 | dev->horkage & ATA_HORKAGE_ZERO_AFTER_TRIM) { | |
2564 | ata_dev_info(dev, "Enabling discard_zeroes_data\n"); | |
2565 | rbuf[14] |= 0x40; /* LBPRZ */ | |
2566 | } | |
e78db4df | 2567 | } |
6d1003ae HR |
2568 | if (ata_id_zoned_cap(args->id) || |
2569 | args->dev->class == ATA_DEV_ZAC) | |
2570 | rbuf[12] = (1 << 4); /* RC_BASIS */ | |
1da177e4 | 2571 | } |
1da177e4 LT |
2572 | return 0; |
2573 | } | |
2574 | ||
2575 | /** | |
2576 | * ata_scsiop_report_luns - Simulate REPORT LUNS command | |
2577 | * @args: device IDENTIFY data / SCSI command of interest. | |
2578 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2579 | * |
2580 | * Simulate REPORT LUNS command. | |
2581 | * | |
2582 | * LOCKING: | |
cca3974e | 2583 | * spin_lock_irqsave(host lock) |
1da177e4 | 2584 | */ |
87340e98 | 2585 | static unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2586 | { |
1da177e4 LT |
2587 | rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */ |
2588 | ||
2589 | return 0; | |
2590 | } | |
2591 | ||
aa18da8b CH |
2592 | /* |
2593 | * ATAPI devices typically report zero for their SCSI version, and sometimes | |
2594 | * deviate from the spec WRT response data format. If SCSI version is | |
2595 | * reported as zero like normal, then we make the following fixups: | |
2596 | * 1) Fake MMC-5 version, to indicate to the Linux scsi midlayer this is a | |
2597 | * modern device. | |
2598 | * 2) Ensure response data format / ATAPI information are always correct. | |
2599 | */ | |
2600 | static void atapi_fixup_inquiry(struct scsi_cmnd *cmd) | |
2601 | { | |
2602 | u8 buf[4]; | |
2603 | ||
2604 | sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, 4); | |
2605 | if (buf[2] == 0) { | |
2606 | buf[2] = 0x5; | |
2607 | buf[3] = 0x32; | |
2608 | } | |
2609 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, 4); | |
2610 | } | |
2611 | ||
77853bf2 | 2612 | static void atapi_qc_complete(struct ata_queued_cmd *qc) |
1da177e4 LT |
2613 | { |
2614 | struct scsi_cmnd *cmd = qc->scsicmd; | |
a22e2eb0 | 2615 | unsigned int err_mask = qc->err_mask; |
1da177e4 | 2616 | |
ff8072d5 HR |
2617 | /* handle completion from EH */ |
2618 | if (unlikely(err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID)) { | |
246619da TH |
2619 | |
2620 | if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) { | |
2621 | /* FIXME: not quite right; we don't want the | |
2622 | * translation of taskfile registers into a | |
2623 | * sense descriptors, since that's only | |
2624 | * correct for ATA, not ATAPI | |
2625 | */ | |
750426aa | 2626 | ata_gen_passthru_sense(qc); |
246619da TH |
2627 | } |
2628 | ||
22aac089 TH |
2629 | /* SCSI EH automatically locks door if sdev->locked is |
2630 | * set. Sometimes door lock request continues to | |
2631 | * fail, for example, when no media is present. This | |
2632 | * creates a loop - SCSI EH issues door lock which | |
2633 | * fails and gets invoked again to acquire sense data | |
2634 | * for the failed command. | |
2635 | * | |
2636 | * If door lock fails, always clear sdev->locked to | |
2637 | * avoid this infinite loop. | |
2a5f07b5 TH |
2638 | * |
2639 | * This may happen before SCSI scan is complete. Make | |
2640 | * sure qc->dev->sdev isn't NULL before dereferencing. | |
22aac089 | 2641 | */ |
2a5f07b5 | 2642 | if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL && qc->dev->sdev) |
22aac089 TH |
2643 | qc->dev->sdev->locked = 0; |
2644 | ||
246619da | 2645 | qc->scsicmd->result = SAM_STAT_CHECK_CONDITION; |
2aa8f5d6 | 2646 | ata_qc_done(qc); |
246619da TH |
2647 | return; |
2648 | } | |
2649 | ||
ff8072d5 HR |
2650 | /* successful completion path */ |
2651 | if (cmd->cmnd[0] == INQUIRY && (cmd->cmnd[1] & 0x03) == 0) | |
2652 | atapi_fixup_inquiry(cmd); | |
2653 | cmd->result = SAM_STAT_GOOD; | |
1da177e4 | 2654 | |
2aa8f5d6 | 2655 | ata_qc_done(qc); |
1da177e4 LT |
2656 | } |
2657 | /** | |
2658 | * atapi_xlat - Initialize PACKET taskfile | |
2659 | * @qc: command structure to be initialized | |
1da177e4 LT |
2660 | * |
2661 | * LOCKING: | |
cca3974e | 2662 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
2663 | * |
2664 | * RETURNS: | |
2665 | * Zero on success, non-zero on failure. | |
2666 | */ | |
ad706991 | 2667 | static unsigned int atapi_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 2668 | { |
542b1444 | 2669 | struct scsi_cmnd *scmd = qc->scsicmd; |
1da177e4 | 2670 | struct ata_device *dev = qc->dev; |
542b1444 | 2671 | int nodata = (scmd->sc_data_direction == DMA_NONE); |
5895ef9a | 2672 | int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO); |
2db78dd3 | 2673 | unsigned int nbytes; |
1da177e4 | 2674 | |
2e5704f6 TH |
2675 | memset(qc->cdb, 0, dev->cdb_len); |
2676 | memcpy(qc->cdb, scmd->cmnd, scmd->cmd_len); | |
1da177e4 LT |
2677 | |
2678 | qc->complete_fn = atapi_qc_complete; | |
2679 | ||
2680 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
542b1444 | 2681 | if (scmd->sc_data_direction == DMA_TO_DEVICE) { |
1da177e4 | 2682 | qc->tf.flags |= ATA_TFLAG_WRITE; |
1da177e4 LT |
2683 | } |
2684 | ||
2685 | qc->tf.command = ATA_CMD_PACKET; | |
aacda375 | 2686 | ata_qc_set_pc_nbytes(qc); |
e00f1ff3 TH |
2687 | |
2688 | /* check whether ATAPI DMA is safe */ | |
5895ef9a | 2689 | if (!nodata && !using_pio && atapi_check_dma(qc)) |
e00f1ff3 | 2690 | using_pio = 1; |
1da177e4 | 2691 | |
e190222d TH |
2692 | /* Some controller variants snoop this value for Packet |
2693 | * transfers to do state machine and FIFO management. Thus we | |
2694 | * want to set it properly, and for DMA where it is | |
2695 | * effectively meaningless. | |
2696 | */ | |
aacda375 | 2697 | nbytes = min(ata_qc_raw_nbytes(qc), (unsigned int)63 * 1024); |
2db78dd3 | 2698 | |
e190222d TH |
2699 | /* Most ATAPI devices which honor transfer chunk size don't |
2700 | * behave according to the spec when odd chunk size which | |
2701 | * matches the transfer length is specified. If the number of | |
2702 | * bytes to transfer is 2n+1. According to the spec, what | |
2703 | * should happen is to indicate that 2n+1 is going to be | |
2704 | * transferred and transfer 2n+2 bytes where the last byte is | |
2705 | * padding. | |
2706 | * | |
2707 | * In practice, this doesn't happen. ATAPI devices first | |
2708 | * indicate and transfer 2n bytes and then indicate and | |
2709 | * transfer 2 bytes where the last byte is padding. | |
2710 | * | |
2711 | * This inconsistency confuses several controllers which | |
2712 | * perform PIO using DMA such as Intel AHCIs and sil3124/32. | |
2713 | * These controllers use actual number of transferred bytes to | |
8d1e02d1 | 2714 | * update DMA pointer and transfer of 4n+2 bytes make those |
e190222d TH |
2715 | * controller push DMA pointer by 4n+4 bytes because SATA data |
2716 | * FISes are aligned to 4 bytes. This causes data corruption | |
2717 | * and buffer overrun. | |
2718 | * | |
2719 | * Always setting nbytes to even number solves this problem | |
2720 | * because then ATAPI devices don't have to split data at 2n | |
2721 | * boundaries. | |
2722 | */ | |
2723 | if (nbytes & 0x1) | |
2724 | nbytes++; | |
2725 | ||
2db78dd3 AC |
2726 | qc->tf.lbam = (nbytes & 0xFF); |
2727 | qc->tf.lbah = (nbytes >> 8); | |
2728 | ||
5895ef9a TH |
2729 | if (nodata) |
2730 | qc->tf.protocol = ATAPI_PROT_NODATA; | |
2731 | else if (using_pio) | |
2732 | qc->tf.protocol = ATAPI_PROT_PIO; | |
2733 | else { | |
e00f1ff3 | 2734 | /* DMA data xfer */ |
0dc36888 | 2735 | qc->tf.protocol = ATAPI_PROT_DMA; |
1da177e4 LT |
2736 | qc->tf.feature |= ATAPI_PKT_DMA; |
2737 | ||
91163006 TH |
2738 | if ((dev->flags & ATA_DFLAG_DMADIR) && |
2739 | (scmd->sc_data_direction != DMA_TO_DEVICE)) | |
95de719a | 2740 | /* some SATA bridges need us to indicate data xfer direction */ |
1da177e4 | 2741 | qc->tf.feature |= ATAPI_DMADIR; |
1da177e4 LT |
2742 | } |
2743 | ||
2db78dd3 AC |
2744 | |
2745 | /* FIXME: We need to translate 0x05 READ_BLOCK_LIMITS to a MODE_SENSE | |
2746 | as ATAPI tape drives don't get this right otherwise */ | |
1da177e4 LT |
2747 | return 0; |
2748 | } | |
2749 | ||
7f875850 | 2750 | static struct ata_device *ata_find_dev(struct ata_port *ap, unsigned int devno) |
ab5b3a5b | 2751 | { |
7f875850 DLM |
2752 | /* |
2753 | * For the non-PMP case, ata_link_max_devices() returns 1 (SATA case), | |
2754 | * or 2 (IDE master + slave case). However, the former case includes | |
2755 | * libsas hosted devices which are numbered per scsi host, leading | |
2756 | * to devno potentially being larger than 0 but with each struct | |
2757 | * ata_device having its own struct ata_port and struct ata_link. | |
2758 | * To accommodate these, ignore devno and always use device number 0. | |
2759 | */ | |
2760 | if (likely(!sata_pmp_attached(ap))) { | |
2761 | int link_max_devices = ata_link_max_devices(&ap->link); | |
2762 | ||
2763 | if (link_max_devices == 1) | |
2764 | return &ap->link.device[0]; | |
2765 | ||
2766 | if (devno < link_max_devices) | |
41bda9c9 | 2767 | return &ap->link.device[devno]; |
7f875850 DLM |
2768 | |
2769 | return NULL; | |
41bda9c9 TH |
2770 | } |
2771 | ||
7f875850 DLM |
2772 | /* |
2773 | * For PMP-attached devices, the device number corresponds to C | |
2774 | * (channel) of SCSI [H:C:I:L], indicating the port pmp link | |
2775 | * for the device. | |
2776 | */ | |
2777 | if (devno < ap->nr_pmp_links) | |
2778 | return &ap->pmp_link[devno].device[0]; | |
2779 | ||
ab5b3a5b TH |
2780 | return NULL; |
2781 | } | |
2782 | ||
2dcb407e JG |
2783 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
2784 | const struct scsi_device *scsidev) | |
ab5b3a5b | 2785 | { |
41bda9c9 TH |
2786 | int devno; |
2787 | ||
ab5b3a5b | 2788 | /* skip commands not addressed to targets we simulate */ |
071f44b1 | 2789 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
2790 | if (unlikely(scsidev->channel || scsidev->lun)) |
2791 | return NULL; | |
2792 | devno = scsidev->id; | |
2793 | } else { | |
2794 | if (unlikely(scsidev->id || scsidev->lun)) | |
2795 | return NULL; | |
2796 | devno = scsidev->channel; | |
2797 | } | |
ab5b3a5b | 2798 | |
41bda9c9 | 2799 | return ata_find_dev(ap, devno); |
ab5b3a5b TH |
2800 | } |
2801 | ||
1da177e4 LT |
2802 | /** |
2803 | * ata_scsi_find_dev - lookup ata_device from scsi_cmnd | |
2804 | * @ap: ATA port to which the device is attached | |
2805 | * @scsidev: SCSI device from which we derive the ATA device | |
2806 | * | |
2807 | * Given various information provided in struct scsi_cmnd, | |
2808 | * map that onto an ATA bus, and using that mapping | |
2809 | * determine which ata_device is associated with the | |
2810 | * SCSI command to be sent. | |
2811 | * | |
2812 | * LOCKING: | |
cca3974e | 2813 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
2814 | * |
2815 | * RETURNS: | |
2816 | * Associated ATA device, or %NULL if not found. | |
2817 | */ | |
ec811a94 | 2818 | struct ata_device * |
057ace5e | 2819 | ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev) |
1da177e4 | 2820 | { |
ab5b3a5b | 2821 | struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev); |
1da177e4 | 2822 | |
2486fa56 | 2823 | if (unlikely(!dev || !ata_dev_enabled(dev))) |
1da177e4 LT |
2824 | return NULL; |
2825 | ||
1da177e4 LT |
2826 | return dev; |
2827 | } | |
2828 | ||
b095518e JG |
2829 | /* |
2830 | * ata_scsi_map_proto - Map pass-thru protocol value to taskfile value. | |
2831 | * @byte1: Byte 1 from pass-thru CDB. | |
2832 | * | |
2833 | * RETURNS: | |
2834 | * ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise. | |
2835 | */ | |
2836 | static u8 | |
2837 | ata_scsi_map_proto(u8 byte1) | |
2838 | { | |
2839 | switch((byte1 & 0x1e) >> 1) { | |
2dcb407e JG |
2840 | case 3: /* Non-data */ |
2841 | return ATA_PROT_NODATA; | |
2842 | ||
2843 | case 6: /* DMA */ | |
2844 | case 10: /* UDMA Data-in */ | |
2845 | case 11: /* UDMA Data-Out */ | |
2846 | return ATA_PROT_DMA; | |
2847 | ||
2848 | case 4: /* PIO Data-in */ | |
2849 | case 5: /* PIO Data-out */ | |
2850 | return ATA_PROT_PIO; | |
2851 | ||
ee7fb331 VK |
2852 | case 12: /* FPDMA */ |
2853 | return ATA_PROT_NCQ; | |
2854 | ||
2dcb407e JG |
2855 | case 0: /* Hard Reset */ |
2856 | case 1: /* SRST */ | |
2857 | case 8: /* Device Diagnostic */ | |
2858 | case 9: /* Device Reset */ | |
2859 | case 7: /* DMA Queued */ | |
2dcb407e JG |
2860 | case 15: /* Return Response Info */ |
2861 | default: /* Reserved */ | |
2862 | break; | |
b095518e JG |
2863 | } |
2864 | ||
2865 | return ATA_PROT_UNKNOWN; | |
2866 | } | |
2867 | ||
2868 | /** | |
2869 | * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile | |
2870 | * @qc: command structure to be initialized | |
b095518e | 2871 | * |
b1ffbf85 | 2872 | * Handles either 12, 16, or 32-byte versions of the CDB. |
b095518e JG |
2873 | * |
2874 | * RETURNS: | |
2875 | * Zero on success, non-zero on failure. | |
2876 | */ | |
ad706991 | 2877 | static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc) |
b095518e JG |
2878 | { |
2879 | struct ata_taskfile *tf = &(qc->tf); | |
542b1444 | 2880 | struct scsi_cmnd *scmd = qc->scsicmd; |
f79d409f | 2881 | struct ata_device *dev = qc->dev; |
ad706991 | 2882 | const u8 *cdb = scmd->cmnd; |
bcfc867d | 2883 | u16 fp; |
b1ffbf85 | 2884 | u16 cdb_offset = 0; |
b095518e | 2885 | |
b1ffbf85 MI |
2886 | /* 7Fh variable length cmd means a ata pass-thru(32) */ |
2887 | if (cdb[0] == VARIABLE_LENGTH_CMD) | |
2888 | cdb_offset = 9; | |
2889 | ||
2890 | tf->protocol = ata_scsi_map_proto(cdb[1 + cdb_offset]); | |
2891 | if (tf->protocol == ATA_PROT_UNKNOWN) { | |
bcfc867d | 2892 | fp = 1; |
9a405257 | 2893 | goto invalid_fld; |
bcfc867d | 2894 | } |
8190bdb9 | 2895 | |
5da5231b GK |
2896 | if ((cdb[2 + cdb_offset] & 0x3) == 0) { |
2897 | /* | |
2898 | * When T_LENGTH is zero (No data is transferred), dir should | |
2899 | * be DMA_NONE. | |
2900 | */ | |
2901 | if (scmd->sc_data_direction != DMA_NONE) { | |
2902 | fp = 2 + cdb_offset; | |
2903 | goto invalid_fld; | |
2904 | } | |
2905 | ||
2906 | if (ata_is_ncq(tf->protocol)) | |
2907 | tf->protocol = ATA_PROT_NCQ_NODATA; | |
2908 | } | |
5b844b63 | 2909 | |
5f8e7f17 VK |
2910 | /* enable LBA */ |
2911 | tf->flags |= ATA_TFLAG_LBA; | |
2912 | ||
b095518e JG |
2913 | /* |
2914 | * 12 and 16 byte CDBs use different offsets to | |
2915 | * provide the various register values. | |
2916 | */ | |
59b00404 SS |
2917 | switch (cdb[0]) { |
2918 | case ATA_16: | |
b095518e JG |
2919 | /* |
2920 | * 16-byte CDB - may contain extended commands. | |
2921 | * | |
2922 | * If that is the case, copy the upper byte register values. | |
2923 | */ | |
542b1444 TH |
2924 | if (cdb[1] & 0x01) { |
2925 | tf->hob_feature = cdb[3]; | |
2926 | tf->hob_nsect = cdb[5]; | |
2927 | tf->hob_lbal = cdb[7]; | |
2928 | tf->hob_lbam = cdb[9]; | |
2929 | tf->hob_lbah = cdb[11]; | |
b095518e JG |
2930 | tf->flags |= ATA_TFLAG_LBA48; |
2931 | } else | |
2932 | tf->flags &= ~ATA_TFLAG_LBA48; | |
2933 | ||
2934 | /* | |
2935 | * Always copy low byte, device and command registers. | |
2936 | */ | |
542b1444 TH |
2937 | tf->feature = cdb[4]; |
2938 | tf->nsect = cdb[6]; | |
2939 | tf->lbal = cdb[8]; | |
2940 | tf->lbam = cdb[10]; | |
2941 | tf->lbah = cdb[12]; | |
2942 | tf->device = cdb[13]; | |
2943 | tf->command = cdb[14]; | |
59b00404 SS |
2944 | break; |
2945 | case ATA_12: | |
b095518e JG |
2946 | /* |
2947 | * 12-byte CDB - incapable of extended commands. | |
2948 | */ | |
2949 | tf->flags &= ~ATA_TFLAG_LBA48; | |
2950 | ||
542b1444 TH |
2951 | tf->feature = cdb[3]; |
2952 | tf->nsect = cdb[4]; | |
2953 | tf->lbal = cdb[5]; | |
2954 | tf->lbam = cdb[6]; | |
2955 | tf->lbah = cdb[7]; | |
2956 | tf->device = cdb[8]; | |
2957 | tf->command = cdb[9]; | |
59b00404 SS |
2958 | break; |
2959 | default: | |
b1ffbf85 MI |
2960 | /* |
2961 | * 32-byte CDB - may contain extended command fields. | |
2962 | * | |
2963 | * If that is the case, copy the upper byte register values. | |
2964 | */ | |
2965 | if (cdb[10] & 0x01) { | |
2966 | tf->hob_feature = cdb[20]; | |
2967 | tf->hob_nsect = cdb[22]; | |
2968 | tf->hob_lbal = cdb[16]; | |
2969 | tf->hob_lbam = cdb[15]; | |
2970 | tf->hob_lbah = cdb[14]; | |
2971 | tf->flags |= ATA_TFLAG_LBA48; | |
2972 | } else | |
2973 | tf->flags &= ~ATA_TFLAG_LBA48; | |
2974 | ||
2975 | tf->feature = cdb[21]; | |
2976 | tf->nsect = cdb[23]; | |
2977 | tf->lbal = cdb[19]; | |
2978 | tf->lbam = cdb[18]; | |
2979 | tf->lbah = cdb[17]; | |
2980 | tf->device = cdb[24]; | |
2981 | tf->command = cdb[25]; | |
2982 | tf->auxiliary = get_unaligned_be32(&cdb[28]); | |
59b00404 | 2983 | break; |
b095518e | 2984 | } |
fa4453c4 | 2985 | |
179b310a HR |
2986 | /* For NCQ commands copy the tag value */ |
2987 | if (ata_is_ncq(tf->protocol)) | |
4e5b6260 | 2988 | tf->nsect = qc->hw_tag << 3; |
ee7fb331 | 2989 | |
fa4453c4 AL |
2990 | /* enforce correct master/slave bit */ |
2991 | tf->device = dev->devno ? | |
2992 | tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1; | |
b095518e | 2993 | |
bd30add8 | 2994 | switch (tf->command) { |
295124dc | 2995 | /* READ/WRITE LONG use a non-standard sect_size */ |
bd30add8 TH |
2996 | case ATA_CMD_READ_LONG: |
2997 | case ATA_CMD_READ_LONG_ONCE: | |
2998 | case ATA_CMD_WRITE_LONG: | |
2999 | case ATA_CMD_WRITE_LONG_ONCE: | |
bcfc867d HR |
3000 | if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1) { |
3001 | fp = 1; | |
bd30add8 | 3002 | goto invalid_fld; |
bcfc867d | 3003 | } |
bd30add8 | 3004 | qc->sect_size = scsi_bufflen(scmd); |
295124dc GG |
3005 | break; |
3006 | ||
3007 | /* commands using reported Logical Block size (e.g. 512 or 4K) */ | |
3008 | case ATA_CMD_CFA_WRITE_NE: | |
3009 | case ATA_CMD_CFA_TRANS_SECT: | |
3010 | case ATA_CMD_CFA_WRITE_MULT_NE: | |
3011 | /* XXX: case ATA_CMD_CFA_WRITE_SECTORS_WITHOUT_ERASE: */ | |
3012 | case ATA_CMD_READ: | |
3013 | case ATA_CMD_READ_EXT: | |
3014 | case ATA_CMD_READ_QUEUED: | |
3015 | /* XXX: case ATA_CMD_READ_QUEUED_EXT: */ | |
3016 | case ATA_CMD_FPDMA_READ: | |
3017 | case ATA_CMD_READ_MULTI: | |
3018 | case ATA_CMD_READ_MULTI_EXT: | |
3019 | case ATA_CMD_PIO_READ: | |
3020 | case ATA_CMD_PIO_READ_EXT: | |
3021 | case ATA_CMD_READ_STREAM_DMA_EXT: | |
3022 | case ATA_CMD_READ_STREAM_EXT: | |
3023 | case ATA_CMD_VERIFY: | |
3024 | case ATA_CMD_VERIFY_EXT: | |
3025 | case ATA_CMD_WRITE: | |
3026 | case ATA_CMD_WRITE_EXT: | |
3027 | case ATA_CMD_WRITE_FUA_EXT: | |
3028 | case ATA_CMD_WRITE_QUEUED: | |
3029 | case ATA_CMD_WRITE_QUEUED_FUA_EXT: | |
3030 | case ATA_CMD_FPDMA_WRITE: | |
3031 | case ATA_CMD_WRITE_MULTI: | |
3032 | case ATA_CMD_WRITE_MULTI_EXT: | |
3033 | case ATA_CMD_WRITE_MULTI_FUA_EXT: | |
3034 | case ATA_CMD_PIO_WRITE: | |
3035 | case ATA_CMD_PIO_WRITE_EXT: | |
3036 | case ATA_CMD_WRITE_STREAM_DMA_EXT: | |
3037 | case ATA_CMD_WRITE_STREAM_EXT: | |
3038 | qc->sect_size = scmd->device->sector_size; | |
3039 | break; | |
3040 | ||
3041 | /* Everything else uses 512 byte "sectors" */ | |
3042 | default: | |
3043 | qc->sect_size = ATA_SECT_SIZE; | |
bd30add8 TH |
3044 | } |
3045 | ||
3046 | /* | |
3047 | * Set flags so that all registers will be written, pass on | |
3048 | * write indication (used for PIO/DMA setup), result TF is | |
3049 | * copied back and we don't whine too much about its failure. | |
3050 | */ | |
bc496ed0 | 3051 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
bd30add8 TH |
3052 | if (scmd->sc_data_direction == DMA_TO_DEVICE) |
3053 | tf->flags |= ATA_TFLAG_WRITE; | |
3054 | ||
3055 | qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET; | |
3056 | ||
3057 | /* | |
3058 | * Set transfer length. | |
3059 | * | |
3060 | * TODO: find out if we need to do more here to | |
3061 | * cover scatter/gather case. | |
3062 | */ | |
3063 | ata_qc_set_pc_nbytes(qc); | |
3064 | ||
3065 | /* We may not issue DMA commands if no DMA mode is set */ | |
6ac586f2 | 3066 | if (tf->protocol == ATA_PROT_DMA && !ata_dma_enabled(dev)) { |
bcfc867d | 3067 | fp = 1; |
bd30add8 | 3068 | goto invalid_fld; |
2c1ec6fd EB |
3069 | } |
3070 | ||
3071 | /* We may not issue NCQ commands to devices not supporting NCQ */ | |
3072 | if (ata_is_ncq(tf->protocol) && !ata_ncq_enabled(dev)) { | |
3073 | fp = 1; | |
3074 | goto invalid_fld; | |
bcfc867d | 3075 | } |
bd30add8 | 3076 | |
1dce589c | 3077 | /* sanity check for pio multi commands */ |
bcfc867d HR |
3078 | if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf)) { |
3079 | fp = 1; | |
1dce589c | 3080 | goto invalid_fld; |
bcfc867d | 3081 | } |
1dce589c AL |
3082 | |
3083 | if (is_multi_taskfile(tf)) { | |
3084 | unsigned int multi_count = 1 << (cdb[1] >> 5); | |
3085 | ||
3086 | /* compare the passed through multi_count | |
3087 | * with the cached multi_count of libata | |
3088 | */ | |
3089 | if (multi_count != dev->multi_count) | |
a9a79dfe JP |
3090 | ata_dev_warn(dev, "invalid multi_count %u ignored\n", |
3091 | multi_count); | |
d26fc955 | 3092 | } |
1dce589c | 3093 | |
b095518e JG |
3094 | /* |
3095 | * Filter SET_FEATURES - XFER MODE command -- otherwise, | |
3096 | * SET_FEATURES - XFER MODE must be preceded/succeeded | |
3097 | * by an update to hardware-specific registers for each | |
3098 | * controller (i.e. the reason for ->set_piomode(), | |
3099 | * ->set_dmamode(), and ->post_set_mode() hooks). | |
3100 | */ | |
bd30add8 | 3101 | if (tf->command == ATA_CMD_SET_FEATURES && |
bcfc867d HR |
3102 | tf->feature == SETFEATURES_XFER) { |
3103 | fp = (cdb[0] == ATA_16) ? 4 : 3; | |
9a405257 | 3104 | goto invalid_fld; |
bcfc867d | 3105 | } |
b095518e JG |
3106 | |
3107 | /* | |
bd30add8 TH |
3108 | * Filter TPM commands by default. These provide an |
3109 | * essentially uncontrolled encrypted "back door" between | |
3110 | * applications and the disk. Set libata.allow_tpm=1 if you | |
3111 | * have a real reason for wanting to use them. This ensures | |
3112 | * that installed software cannot easily mess stuff up without | |
3113 | * user intent. DVR type users will probably ship with this enabled | |
3114 | * for movie content management. | |
b095518e | 3115 | * |
bd30add8 TH |
3116 | * Note that for ATA8 we can issue a DCS change and DCS freeze lock |
3117 | * for this and should do in future but that it is not sufficient as | |
3118 | * DCS is an optional feature set. Thus we also do the software filter | |
3119 | * so that we comply with the TC consortium stated goal that the user | |
3120 | * can turn off TC features of their system. | |
b095518e | 3121 | */ |
bcfc867d HR |
3122 | if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm) { |
3123 | fp = (cdb[0] == ATA_16) ? 14 : 9; | |
bd30add8 | 3124 | goto invalid_fld; |
bcfc867d | 3125 | } |
e61e0672 | 3126 | |
b095518e | 3127 | return 0; |
9a405257 TH |
3128 | |
3129 | invalid_fld: | |
0df10b84 | 3130 | ata_scsi_set_invalid_field(dev, scmd, fp, 0xff); |
9a405257 | 3131 | return 1; |
b095518e JG |
3132 | } |
3133 | ||
9379e6b8 ST |
3134 | /** |
3135 | * ata_format_dsm_trim_descr() - SATL Write Same to DSM Trim | |
3136 | * @cmd: SCSI command being translated | |
ef2d7392 | 3137 | * @trmax: Maximum number of entries that will fit in sector_size bytes. |
9379e6b8 | 3138 | * @sector: Starting sector |
7b203094 | 3139 | * @count: Total Range of request in logical sectors |
9379e6b8 ST |
3140 | * |
3141 | * Rewrite the WRITE SAME descriptor to be a DSM TRIM little-endian formatted | |
3142 | * descriptor. | |
3143 | * | |
3144 | * Upto 64 entries of the format: | |
3145 | * 63:48 Range Length | |
3146 | * 47:0 LBA | |
3147 | * | |
3148 | * Range Length of 0 is ignored. | |
3149 | * LBA's should be sorted order and not overlap. | |
3150 | * | |
3151 | * NOTE: this is the same format as ADD LBA(S) TO NV CACHE PINNED SET | |
ef2d7392 ST |
3152 | * |
3153 | * Return: Number of bytes copied into sglist. | |
9379e6b8 | 3154 | */ |
ef2d7392 ST |
3155 | static size_t ata_format_dsm_trim_descr(struct scsi_cmnd *cmd, u32 trmax, |
3156 | u64 sector, u32 count) | |
3157 | { | |
3158 | struct scsi_device *sdp = cmd->device; | |
3159 | size_t len = sdp->sector_size; | |
3160 | size_t r; | |
3161 | __le64 *buf; | |
3162 | u32 i = 0; | |
9379e6b8 ST |
3163 | unsigned long flags; |
3164 | ||
ef2d7392 ST |
3165 | WARN_ON(len > ATA_SCSI_RBUF_SIZE); |
3166 | ||
3167 | if (len > ATA_SCSI_RBUF_SIZE) | |
3168 | len = ATA_SCSI_RBUF_SIZE; | |
9379e6b8 ST |
3169 | |
3170 | spin_lock_irqsave(&ata_scsi_rbuf_lock, flags); | |
ef2d7392 ST |
3171 | buf = ((void *)ata_scsi_rbuf); |
3172 | memset(buf, 0, len); | |
3173 | while (i < trmax) { | |
9379e6b8 ST |
3174 | u64 entry = sector | |
3175 | ((u64)(count > 0xffff ? 0xffff : count) << 48); | |
ef2d7392 | 3176 | buf[i++] = __cpu_to_le64(entry); |
9379e6b8 ST |
3177 | if (count <= 0xffff) |
3178 | break; | |
3179 | count -= 0xffff; | |
3180 | sector += 0xffff; | |
3181 | } | |
ef2d7392 | 3182 | r = sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, len); |
9379e6b8 ST |
3183 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, flags); |
3184 | ||
ef2d7392 | 3185 | return r; |
9379e6b8 ST |
3186 | } |
3187 | ||
7b203094 ST |
3188 | /** |
3189 | * ata_scsi_write_same_xlat() - SATL Write Same to ATA SCT Write Same | |
3190 | * @qc: Command to be translated | |
3191 | * | |
3192 | * Translate a SCSI WRITE SAME command to be either a DSM TRIM command or | |
3193 | * an SCT Write Same command. | |
6baf20bc MCC |
3194 | * Based on WRITE SAME has the UNMAP flag: |
3195 | * | |
3196 | * - When set translate to DSM TRIM | |
3197 | * - When clear translate to SCT Write Same | |
7b203094 | 3198 | */ |
18f0f978 CH |
3199 | static unsigned int ata_scsi_write_same_xlat(struct ata_queued_cmd *qc) |
3200 | { | |
3201 | struct ata_taskfile *tf = &qc->tf; | |
3202 | struct scsi_cmnd *scmd = qc->scsicmd; | |
ef2d7392 ST |
3203 | struct scsi_device *sdp = scmd->device; |
3204 | size_t len = sdp->sector_size; | |
18f0f978 CH |
3205 | struct ata_device *dev = qc->dev; |
3206 | const u8 *cdb = scmd->cmnd; | |
3207 | u64 block; | |
3208 | u32 n_block; | |
ef2d7392 | 3209 | const u32 trmax = len >> 3; |
18f0f978 | 3210 | u32 size; |
bcfc867d | 3211 | u16 fp; |
0df10b84 | 3212 | u8 bp = 0xff; |
7b203094 | 3213 | u8 unmap = cdb[1] & 0x8; |
18f0f978 CH |
3214 | |
3215 | /* we may not issue DMA commands if no DMA mode is set */ | |
6ac586f2 | 3216 | if (unlikely(!ata_dma_enabled(dev))) |
bcfc867d | 3217 | goto invalid_opcode; |
18f0f978 | 3218 | |
c6ade20f CH |
3219 | /* |
3220 | * We only allow sending this command through the block layer, | |
3221 | * as it modifies the DATA OUT buffer, which would corrupt user | |
3222 | * memory for SG_IO commands. | |
3223 | */ | |
c8329cd5 | 3224 | if (unlikely(blk_rq_is_passthrough(scsi_cmd_to_rq(scmd)))) |
c6ade20f CH |
3225 | goto invalid_opcode; |
3226 | ||
bcfc867d HR |
3227 | if (unlikely(scmd->cmd_len < 16)) { |
3228 | fp = 15; | |
18f0f978 | 3229 | goto invalid_fld; |
bcfc867d | 3230 | } |
18f0f978 CH |
3231 | scsi_16_lba_len(cdb, &block, &n_block); |
3232 | ||
63ccc191 CH |
3233 | if (!unmap || |
3234 | (dev->horkage & ATA_HORKAGE_NOTRIM) || | |
3235 | !ata_id_has_trim(dev->id)) { | |
3236 | fp = 1; | |
3237 | bp = 3; | |
3238 | goto invalid_fld; | |
3239 | } | |
3240 | /* If the request is too large the cmd is invalid */ | |
3241 | if (n_block > 0xffff * trmax) { | |
3242 | fp = 2; | |
3243 | goto invalid_fld; | |
bcfc867d | 3244 | } |
18f0f978 CH |
3245 | |
3246 | /* | |
3247 | * WRITE SAME always has a sector sized buffer as payload, this | |
3248 | * should never be a multiple entry S/G list. | |
3249 | */ | |
3250 | if (!scsi_sg_count(scmd)) | |
bcfc867d | 3251 | goto invalid_param_len; |
18f0f978 | 3252 | |
ef2d7392 ST |
3253 | /* |
3254 | * size must match sector size in bytes | |
3255 | * For DATA SET MANAGEMENT TRIM in ACS-2 nsect (aka count) | |
3256 | * is defined as number of 512 byte blocks to be transferred. | |
3257 | */ | |
87fb6c31 | 3258 | |
63ccc191 CH |
3259 | size = ata_format_dsm_trim_descr(scmd, trmax, block, n_block); |
3260 | if (size != len) | |
3261 | goto invalid_param_len; | |
3262 | ||
3263 | if (ata_ncq_enabled(dev) && ata_fpdma_dsm_supported(dev)) { | |
3264 | /* Newer devices support queued TRIM commands */ | |
3265 | tf->protocol = ATA_PROT_NCQ; | |
3266 | tf->command = ATA_CMD_FPDMA_SEND; | |
3267 | tf->hob_nsect = ATA_SUBCMD_FPDMA_SEND_DSM & 0x1f; | |
4e5b6260 | 3268 | tf->nsect = qc->hw_tag << 3; |
63ccc191 CH |
3269 | tf->hob_feature = (size / 512) >> 8; |
3270 | tf->feature = size / 512; | |
3271 | ||
3272 | tf->auxiliary = 1; | |
3273 | } else { | |
7b203094 | 3274 | tf->protocol = ATA_PROT_DMA; |
63ccc191 CH |
3275 | tf->hob_feature = 0; |
3276 | tf->feature = ATA_DSM_TRIM; | |
3277 | tf->hob_nsect = (size / 512) >> 8; | |
3278 | tf->nsect = size / 512; | |
3279 | tf->command = ATA_CMD_DSM; | |
87fb6c31 MC |
3280 | } |
3281 | ||
18f0f978 CH |
3282 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 | |
3283 | ATA_TFLAG_WRITE; | |
3284 | ||
3285 | ata_qc_set_pc_nbytes(qc); | |
3286 | ||
3287 | return 0; | |
3288 | ||
bcfc867d | 3289 | invalid_fld: |
0df10b84 | 3290 | ata_scsi_set_invalid_field(dev, scmd, fp, bp); |
bcfc867d HR |
3291 | return 1; |
3292 | invalid_param_len: | |
3293 | /* "Parameter list length error" */ | |
3294 | ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
3295 | return 1; | |
3296 | invalid_opcode: | |
3297 | /* "Invalid command operation code" */ | |
3298 | ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x20, 0x0); | |
18f0f978 CH |
3299 | return 1; |
3300 | } | |
3301 | ||
7b203094 ST |
3302 | /** |
3303 | * ata_scsiop_maint_in - Simulate a subset of MAINTENANCE_IN | |
3304 | * @args: device MAINTENANCE_IN data / SCSI command of interest. | |
3305 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
3306 | * | |
3307 | * Yields a subset to satisfy scsi_report_opcode() | |
3308 | * | |
3309 | * LOCKING: | |
3310 | * spin_lock_irqsave(host lock) | |
3311 | */ | |
3312 | static unsigned int ata_scsiop_maint_in(struct ata_scsi_args *args, u8 *rbuf) | |
3313 | { | |
3314 | struct ata_device *dev = args->dev; | |
3315 | u8 *cdb = args->cmd->cmnd; | |
0de55801 | 3316 | u8 supported = 0, cdlp = 0, rwcdlp = 0; |
7b203094 ST |
3317 | unsigned int err = 0; |
3318 | ||
002c4871 | 3319 | if (cdb[2] != 1 && cdb[2] != 3) { |
7b203094 ST |
3320 | ata_dev_warn(dev, "invalid command format %d\n", cdb[2]); |
3321 | err = 2; | |
3322 | goto out; | |
3323 | } | |
002c4871 | 3324 | |
7b203094 ST |
3325 | switch (cdb[3]) { |
3326 | case INQUIRY: | |
3327 | case MODE_SENSE: | |
3328 | case MODE_SENSE_10: | |
3329 | case READ_CAPACITY: | |
3330 | case SERVICE_ACTION_IN_16: | |
3331 | case REPORT_LUNS: | |
3332 | case REQUEST_SENSE: | |
3333 | case SYNCHRONIZE_CACHE: | |
ea045fd3 | 3334 | case SYNCHRONIZE_CACHE_16: |
7b203094 ST |
3335 | case REZERO_UNIT: |
3336 | case SEEK_6: | |
3337 | case SEEK_10: | |
3338 | case TEST_UNIT_READY: | |
3339 | case SEND_DIAGNOSTIC: | |
3340 | case MAINTENANCE_IN: | |
3341 | case READ_6: | |
3342 | case READ_10: | |
7b203094 ST |
3343 | case WRITE_6: |
3344 | case WRITE_10: | |
7b203094 ST |
3345 | case ATA_12: |
3346 | case ATA_16: | |
3347 | case VERIFY: | |
3348 | case VERIFY_16: | |
3349 | case MODE_SELECT: | |
3350 | case MODE_SELECT_10: | |
3351 | case START_STOP: | |
3352 | supported = 3; | |
3353 | break; | |
0de55801 DLM |
3354 | case READ_16: |
3355 | supported = 3; | |
3356 | if (dev->flags & ATA_DFLAG_CDL) { | |
3357 | /* | |
3358 | * CDL read descriptors map to the T2A page, that is, | |
3359 | * rwcdlp = 0x01 and cdlp = 0x01 | |
3360 | */ | |
3361 | rwcdlp = 0x01; | |
3362 | cdlp = 0x01 << 3; | |
3363 | } | |
3364 | break; | |
3365 | case WRITE_16: | |
3366 | supported = 3; | |
3367 | if (dev->flags & ATA_DFLAG_CDL) { | |
3368 | /* | |
3369 | * CDL write descriptors map to the T2B page, that is, | |
3370 | * rwcdlp = 0x01 and cdlp = 0x02 | |
3371 | */ | |
3372 | rwcdlp = 0x01; | |
3373 | cdlp = 0x02 << 3; | |
3374 | } | |
3375 | break; | |
7b203094 ST |
3376 | case ZBC_IN: |
3377 | case ZBC_OUT: | |
3378 | if (ata_id_zoned_cap(dev->id) || | |
3379 | dev->class == ATA_DEV_ZAC) | |
3380 | supported = 3; | |
3381 | break; | |
818831c8 CH |
3382 | case SECURITY_PROTOCOL_IN: |
3383 | case SECURITY_PROTOCOL_OUT: | |
3384 | if (dev->flags & ATA_DFLAG_TRUSTED) | |
3385 | supported = 3; | |
3386 | break; | |
7b203094 ST |
3387 | default: |
3388 | break; | |
3389 | } | |
3390 | out: | |
0de55801 DLM |
3391 | /* One command format */ |
3392 | rbuf[0] = rwcdlp; | |
3393 | rbuf[1] = cdlp | supported; | |
7b203094 ST |
3394 | return err; |
3395 | } | |
3396 | ||
28a3fc22 HR |
3397 | /** |
3398 | * ata_scsi_report_zones_complete - convert ATA output | |
3399 | * @qc: command structure returning the data | |
3400 | * | |
3401 | * Convert T-13 little-endian field representation into | |
3402 | * T-10 big-endian field representation. | |
3403 | * What a mess. | |
3404 | */ | |
3405 | static void ata_scsi_report_zones_complete(struct ata_queued_cmd *qc) | |
3406 | { | |
3407 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3408 | struct sg_mapping_iter miter; | |
3409 | unsigned long flags; | |
3410 | unsigned int bytes = 0; | |
3411 | ||
3412 | sg_miter_start(&miter, scsi_sglist(scmd), scsi_sg_count(scmd), | |
3413 | SG_MITER_TO_SG | SG_MITER_ATOMIC); | |
3414 | ||
3415 | local_irq_save(flags); | |
3416 | while (sg_miter_next(&miter)) { | |
3417 | unsigned int offset = 0; | |
3418 | ||
3419 | if (bytes == 0) { | |
3420 | char *hdr; | |
3421 | u32 list_length; | |
3422 | u64 max_lba, opt_lba; | |
3423 | u16 same; | |
3424 | ||
3425 | /* Swizzle header */ | |
3426 | hdr = miter.addr; | |
3427 | list_length = get_unaligned_le32(&hdr[0]); | |
3428 | same = get_unaligned_le16(&hdr[4]); | |
3429 | max_lba = get_unaligned_le64(&hdr[8]); | |
3430 | opt_lba = get_unaligned_le64(&hdr[16]); | |
3431 | put_unaligned_be32(list_length, &hdr[0]); | |
3432 | hdr[4] = same & 0xf; | |
3433 | put_unaligned_be64(max_lba, &hdr[8]); | |
3434 | put_unaligned_be64(opt_lba, &hdr[16]); | |
3435 | offset += 64; | |
3436 | bytes += 64; | |
3437 | } | |
3438 | while (offset < miter.length) { | |
3439 | char *rec; | |
3440 | u8 cond, type, non_seq, reset; | |
3441 | u64 size, start, wp; | |
3442 | ||
3443 | /* Swizzle zone descriptor */ | |
3444 | rec = miter.addr + offset; | |
3445 | type = rec[0] & 0xf; | |
3446 | cond = (rec[1] >> 4) & 0xf; | |
3447 | non_seq = (rec[1] & 2); | |
3448 | reset = (rec[1] & 1); | |
3449 | size = get_unaligned_le64(&rec[8]); | |
3450 | start = get_unaligned_le64(&rec[16]); | |
3451 | wp = get_unaligned_le64(&rec[24]); | |
3452 | rec[0] = type; | |
3453 | rec[1] = (cond << 4) | non_seq | reset; | |
3454 | put_unaligned_be64(size, &rec[8]); | |
3455 | put_unaligned_be64(start, &rec[16]); | |
3456 | put_unaligned_be64(wp, &rec[24]); | |
3457 | WARN_ON(offset + 64 > miter.length); | |
3458 | offset += 64; | |
3459 | bytes += 64; | |
3460 | } | |
3461 | } | |
3462 | sg_miter_stop(&miter); | |
3463 | local_irq_restore(flags); | |
3464 | ||
3465 | ata_scsi_qc_complete(qc); | |
3466 | } | |
3467 | ||
3468 | static unsigned int ata_scsi_zbc_in_xlat(struct ata_queued_cmd *qc) | |
3469 | { | |
3470 | struct ata_taskfile *tf = &qc->tf; | |
3471 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3472 | const u8 *cdb = scmd->cmnd; | |
3473 | u16 sect, fp = (u16)-1; | |
3474 | u8 sa, options, bp = 0xff; | |
3475 | u64 block; | |
3476 | u32 n_block; | |
3477 | ||
3478 | if (unlikely(scmd->cmd_len < 16)) { | |
3479 | ata_dev_warn(qc->dev, "invalid cdb length %d\n", | |
3480 | scmd->cmd_len); | |
3481 | fp = 15; | |
3482 | goto invalid_fld; | |
3483 | } | |
3484 | scsi_16_lba_len(cdb, &block, &n_block); | |
3485 | if (n_block != scsi_bufflen(scmd)) { | |
3486 | ata_dev_warn(qc->dev, "non-matching transfer count (%d/%d)\n", | |
3487 | n_block, scsi_bufflen(scmd)); | |
3488 | goto invalid_param_len; | |
3489 | } | |
3490 | sa = cdb[1] & 0x1f; | |
3491 | if (sa != ZI_REPORT_ZONES) { | |
3492 | ata_dev_warn(qc->dev, "invalid service action %d\n", sa); | |
3493 | fp = 1; | |
3494 | goto invalid_fld; | |
3495 | } | |
3496 | /* | |
3497 | * ZAC allows only for transfers in 512 byte blocks, | |
3498 | * and uses a 16 bit value for the transfer count. | |
3499 | */ | |
3500 | if ((n_block / 512) > 0xffff || n_block < 512 || (n_block % 512)) { | |
3501 | ata_dev_warn(qc->dev, "invalid transfer count %d\n", n_block); | |
3502 | goto invalid_param_len; | |
3503 | } | |
3504 | sect = n_block / 512; | |
3f17422b | 3505 | options = cdb[14] & 0xbf; |
28a3fc22 HR |
3506 | |
3507 | if (ata_ncq_enabled(qc->dev) && | |
3508 | ata_fpdma_zac_mgmt_in_supported(qc->dev)) { | |
3509 | tf->protocol = ATA_PROT_NCQ; | |
3510 | tf->command = ATA_CMD_FPDMA_RECV; | |
3511 | tf->hob_nsect = ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN & 0x1f; | |
4e5b6260 | 3512 | tf->nsect = qc->hw_tag << 3; |
28a3fc22 HR |
3513 | tf->feature = sect & 0xff; |
3514 | tf->hob_feature = (sect >> 8) & 0xff; | |
3f17422b | 3515 | tf->auxiliary = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES | (options << 8); |
28a3fc22 HR |
3516 | } else { |
3517 | tf->command = ATA_CMD_ZAC_MGMT_IN; | |
3518 | tf->feature = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES; | |
3519 | tf->protocol = ATA_PROT_DMA; | |
3520 | tf->hob_feature = options; | |
3521 | tf->hob_nsect = (sect >> 8) & 0xff; | |
3522 | tf->nsect = sect & 0xff; | |
3523 | } | |
3524 | tf->device = ATA_LBA; | |
3525 | tf->lbah = (block >> 16) & 0xff; | |
3526 | tf->lbam = (block >> 8) & 0xff; | |
3527 | tf->lbal = block & 0xff; | |
3528 | tf->hob_lbah = (block >> 40) & 0xff; | |
3529 | tf->hob_lbam = (block >> 32) & 0xff; | |
3530 | tf->hob_lbal = (block >> 24) & 0xff; | |
3531 | ||
3532 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48; | |
3533 | qc->flags |= ATA_QCFLAG_RESULT_TF; | |
3534 | ||
3535 | ata_qc_set_pc_nbytes(qc); | |
3536 | ||
3537 | qc->complete_fn = ata_scsi_report_zones_complete; | |
3538 | ||
3539 | return 0; | |
3540 | ||
3541 | invalid_fld: | |
3542 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); | |
3543 | return 1; | |
3544 | ||
3545 | invalid_param_len: | |
3546 | /* "Parameter list length error" */ | |
3547 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
3548 | return 1; | |
3549 | } | |
3550 | ||
27708a95 HR |
3551 | static unsigned int ata_scsi_zbc_out_xlat(struct ata_queued_cmd *qc) |
3552 | { | |
3553 | struct ata_taskfile *tf = &qc->tf; | |
3554 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3555 | struct ata_device *dev = qc->dev; | |
3556 | const u8 *cdb = scmd->cmnd; | |
2950cefa | 3557 | u8 all, sa; |
27708a95 HR |
3558 | u64 block; |
3559 | u32 n_block; | |
3560 | u16 fp = (u16)-1; | |
3561 | ||
3562 | if (unlikely(scmd->cmd_len < 16)) { | |
3563 | fp = 15; | |
3564 | goto invalid_fld; | |
3565 | } | |
3566 | ||
3567 | sa = cdb[1] & 0x1f; | |
3568 | if ((sa != ZO_CLOSE_ZONE) && (sa != ZO_FINISH_ZONE) && | |
3569 | (sa != ZO_OPEN_ZONE) && (sa != ZO_RESET_WRITE_POINTER)) { | |
3570 | fp = 1; | |
3571 | goto invalid_fld; | |
3572 | } | |
3573 | ||
3574 | scsi_16_lba_len(cdb, &block, &n_block); | |
3575 | if (n_block) { | |
3576 | /* | |
3577 | * ZAC MANAGEMENT OUT doesn't define any length | |
3578 | */ | |
3579 | goto invalid_param_len; | |
3580 | } | |
27708a95 | 3581 | |
2950cefa | 3582 | all = cdb[14] & 0x1; |
6edf1d4c DLM |
3583 | if (all) { |
3584 | /* | |
3585 | * Ignore the block address (zone ID) as defined by ZBC. | |
3586 | */ | |
3587 | block = 0; | |
3588 | } else if (block >= dev->n_sectors) { | |
b320a0a9 DLM |
3589 | /* |
3590 | * Block must be a valid zone ID (a zone start LBA). | |
3591 | */ | |
3592 | fp = 2; | |
3593 | goto invalid_fld; | |
3594 | } | |
27708a95 | 3595 | |
284b3b77 HR |
3596 | if (ata_ncq_enabled(qc->dev) && |
3597 | ata_fpdma_zac_mgmt_out_supported(qc->dev)) { | |
5b844b63 | 3598 | tf->protocol = ATA_PROT_NCQ_NODATA; |
284b3b77 | 3599 | tf->command = ATA_CMD_NCQ_NON_DATA; |
ee194b75 | 3600 | tf->feature = ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT; |
4e5b6260 | 3601 | tf->nsect = qc->hw_tag << 3; |
2950cefa | 3602 | tf->auxiliary = sa | ((u16)all << 8); |
284b3b77 HR |
3603 | } else { |
3604 | tf->protocol = ATA_PROT_NODATA; | |
3605 | tf->command = ATA_CMD_ZAC_MGMT_OUT; | |
3606 | tf->feature = sa; | |
2950cefa | 3607 | tf->hob_feature = all; |
284b3b77 | 3608 | } |
27708a95 HR |
3609 | tf->lbah = (block >> 16) & 0xff; |
3610 | tf->lbam = (block >> 8) & 0xff; | |
3611 | tf->lbal = block & 0xff; | |
3612 | tf->hob_lbah = (block >> 40) & 0xff; | |
3613 | tf->hob_lbam = (block >> 32) & 0xff; | |
3614 | tf->hob_lbal = (block >> 24) & 0xff; | |
3615 | tf->device = ATA_LBA; | |
3616 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48; | |
3617 | ||
3618 | return 0; | |
3619 | ||
18f0f978 | 3620 | invalid_fld: |
27708a95 HR |
3621 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
3622 | return 1; | |
27708a95 HR |
3623 | invalid_param_len: |
3624 | /* "Parameter list length error" */ | |
3625 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
18f0f978 CH |
3626 | return 1; |
3627 | } | |
3628 | ||
1b26d29c PB |
3629 | /** |
3630 | * ata_mselect_caching - Simulate MODE SELECT for caching info page | |
3631 | * @qc: Storage for translated ATA taskfile | |
3632 | * @buf: input buffer | |
3633 | * @len: number of valid bytes in the input buffer | |
7780081c | 3634 | * @fp: out parameter for the failed field on error |
1b26d29c PB |
3635 | * |
3636 | * Prepare a taskfile to modify caching information for the device. | |
3637 | * | |
3638 | * LOCKING: | |
3639 | * None. | |
3640 | */ | |
3641 | static int ata_mselect_caching(struct ata_queued_cmd *qc, | |
7780081c | 3642 | const u8 *buf, int len, u16 *fp) |
1b26d29c PB |
3643 | { |
3644 | struct ata_taskfile *tf = &qc->tf; | |
3645 | struct ata_device *dev = qc->dev; | |
d7372cb6 | 3646 | u8 mpage[CACHE_MPAGE_LEN]; |
1b26d29c | 3647 | u8 wce; |
7780081c | 3648 | int i; |
1b26d29c PB |
3649 | |
3650 | /* | |
3651 | * The first two bytes of def_cache_mpage are a header, so offsets | |
3652 | * in mpage are off by 2 compared to buf. Same for len. | |
3653 | */ | |
3654 | ||
7780081c | 3655 | if (len != CACHE_MPAGE_LEN - 2) { |
da299470 | 3656 | *fp = min(len, CACHE_MPAGE_LEN - 2); |
1b26d29c | 3657 | return -EINVAL; |
7780081c | 3658 | } |
1b26d29c PB |
3659 | |
3660 | wce = buf[0] & (1 << 2); | |
3661 | ||
3662 | /* | |
3663 | * Check that read-only bits are not modified. | |
3664 | */ | |
3665 | ata_msense_caching(dev->id, mpage, false); | |
7780081c HR |
3666 | for (i = 0; i < CACHE_MPAGE_LEN - 2; i++) { |
3667 | if (i == 0) | |
3668 | continue; | |
3669 | if (mpage[i + 2] != buf[i]) { | |
3670 | *fp = i; | |
3671 | return -EINVAL; | |
3672 | } | |
3673 | } | |
1b26d29c PB |
3674 | |
3675 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; | |
3676 | tf->protocol = ATA_PROT_NODATA; | |
3677 | tf->nsect = 0; | |
3678 | tf->command = ATA_CMD_SET_FEATURES; | |
3679 | tf->feature = wce ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF; | |
3680 | return 0; | |
3681 | } | |
3682 | ||
df60f9c6 DLM |
3683 | /* |
3684 | * Simulate MODE SELECT control mode page, sub-page 0. | |
06dbde5f | 3685 | */ |
df60f9c6 DLM |
3686 | static int ata_mselect_control_spg0(struct ata_queued_cmd *qc, |
3687 | const u8 *buf, int len, u16 *fp) | |
06dbde5f HR |
3688 | { |
3689 | struct ata_device *dev = qc->dev; | |
d7372cb6 | 3690 | u8 mpage[CONTROL_MPAGE_LEN]; |
06dbde5f | 3691 | u8 d_sense; |
7780081c | 3692 | int i; |
06dbde5f HR |
3693 | |
3694 | /* | |
3695 | * The first two bytes of def_control_mpage are a header, so offsets | |
3696 | * in mpage are off by 2 compared to buf. Same for len. | |
3697 | */ | |
3698 | ||
7780081c | 3699 | if (len != CONTROL_MPAGE_LEN - 2) { |
da299470 | 3700 | *fp = min(len, CONTROL_MPAGE_LEN - 2); |
06dbde5f | 3701 | return -EINVAL; |
7780081c | 3702 | } |
06dbde5f HR |
3703 | |
3704 | d_sense = buf[0] & (1 << 2); | |
3705 | ||
3706 | /* | |
3707 | * Check that read-only bits are not modified. | |
3708 | */ | |
673b2fe6 | 3709 | ata_msense_control_spg0(dev, mpage, false); |
7780081c HR |
3710 | for (i = 0; i < CONTROL_MPAGE_LEN - 2; i++) { |
3711 | if (i == 0) | |
3712 | continue; | |
3713 | if (mpage[2 + i] != buf[i]) { | |
3714 | *fp = i; | |
3715 | return -EINVAL; | |
3716 | } | |
3717 | } | |
06dbde5f HR |
3718 | if (d_sense & (1 << 2)) |
3719 | dev->flags |= ATA_DFLAG_D_SENSE; | |
3720 | else | |
3721 | dev->flags &= ~ATA_DFLAG_D_SENSE; | |
06dbde5f HR |
3722 | return 0; |
3723 | } | |
3724 | ||
df60f9c6 DLM |
3725 | /* |
3726 | * Translate MODE SELECT control mode page, sub-pages f2h (ATA feature mode | |
3727 | * page) into a SET FEATURES command. | |
3728 | */ | |
3729 | static unsigned int ata_mselect_control_ata_feature(struct ata_queued_cmd *qc, | |
3730 | const u8 *buf, int len, | |
3731 | u16 *fp) | |
3732 | { | |
3733 | struct ata_device *dev = qc->dev; | |
3734 | struct ata_taskfile *tf = &qc->tf; | |
3735 | u8 cdl_action; | |
3736 | ||
3737 | /* | |
3738 | * The first four bytes of ATA Feature Control mode page are a header, | |
3739 | * so offsets in mpage are off by 4 compared to buf. Same for len. | |
3740 | */ | |
3741 | if (len != ATA_FEATURE_SUB_MPAGE_LEN - 4) { | |
3742 | *fp = min(len, ATA_FEATURE_SUB_MPAGE_LEN - 4); | |
3743 | return -EINVAL; | |
3744 | } | |
3745 | ||
3746 | /* Check cdl_ctrl */ | |
3747 | switch (buf[0] & 0x03) { | |
3748 | case 0: | |
3749 | /* Disable CDL */ | |
3750 | cdl_action = 0; | |
3751 | dev->flags &= ~ATA_DFLAG_CDL_ENABLED; | |
3752 | break; | |
3753 | case 0x02: | |
3754 | /* Enable CDL T2A/T2B: NCQ priority must be disabled */ | |
3755 | if (dev->flags & ATA_DFLAG_NCQ_PRIO_ENABLED) { | |
3756 | ata_dev_err(dev, | |
3757 | "NCQ priority must be disabled to enable CDL\n"); | |
3758 | return -EINVAL; | |
3759 | } | |
3760 | cdl_action = 1; | |
3761 | dev->flags |= ATA_DFLAG_CDL_ENABLED; | |
3762 | break; | |
3763 | default: | |
3764 | *fp = 0; | |
3765 | return -EINVAL; | |
3766 | } | |
3767 | ||
3768 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; | |
3769 | tf->protocol = ATA_PROT_NODATA; | |
3770 | tf->command = ATA_CMD_SET_FEATURES; | |
3771 | tf->feature = SETFEATURES_CDL; | |
3772 | tf->nsect = cdl_action; | |
3773 | ||
3774 | return 1; | |
3775 | } | |
3776 | ||
3777 | /** | |
3778 | * ata_mselect_control - Simulate MODE SELECT for control page | |
3779 | * @qc: Storage for translated ATA taskfile | |
401f8ef3 | 3780 | * @spg: target sub-page of the control page |
df60f9c6 DLM |
3781 | * @buf: input buffer |
3782 | * @len: number of valid bytes in the input buffer | |
3783 | * @fp: out parameter for the failed field on error | |
3784 | * | |
3785 | * Prepare a taskfile to modify caching information for the device. | |
3786 | * | |
3787 | * LOCKING: | |
3788 | * None. | |
3789 | */ | |
3790 | static int ata_mselect_control(struct ata_queued_cmd *qc, u8 spg, | |
3791 | const u8 *buf, int len, u16 *fp) | |
3792 | { | |
3793 | switch (spg) { | |
3794 | case 0: | |
3795 | return ata_mselect_control_spg0(qc, buf, len, fp); | |
3796 | case ATA_FEATURE_SUB_MPAGE: | |
3797 | return ata_mselect_control_ata_feature(qc, buf, len, fp); | |
3798 | default: | |
3799 | return -EINVAL; | |
3800 | } | |
3801 | } | |
3802 | ||
1b26d29c | 3803 | /** |
01efd600 | 3804 | * ata_scsi_mode_select_xlat - Simulate MODE SELECT 6, 10 commands |
1b26d29c PB |
3805 | * @qc: Storage for translated ATA taskfile |
3806 | * | |
3807 | * Converts a MODE SELECT command to an ATA SET FEATURES taskfile. | |
3808 | * Assume this is invoked for direct access devices (e.g. disks) only. | |
3809 | * There should be no block descriptor for other device types. | |
3810 | * | |
3811 | * LOCKING: | |
3812 | * spin_lock_irqsave(host lock) | |
3813 | */ | |
3814 | static unsigned int ata_scsi_mode_select_xlat(struct ata_queued_cmd *qc) | |
3815 | { | |
3816 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3817 | const u8 *cdb = scmd->cmnd; | |
1b26d29c PB |
3818 | u8 pg, spg; |
3819 | unsigned six_byte, pg_len, hdr_len, bd_len; | |
df60f9c6 | 3820 | int len, ret; |
7780081c HR |
3821 | u16 fp = (u16)-1; |
3822 | u8 bp = 0xff; | |
f650ef61 YB |
3823 | u8 buffer[64]; |
3824 | const u8 *p = buffer; | |
1b26d29c | 3825 | |
1b26d29c PB |
3826 | six_byte = (cdb[0] == MODE_SELECT); |
3827 | if (six_byte) { | |
bcfc867d HR |
3828 | if (scmd->cmd_len < 5) { |
3829 | fp = 4; | |
1b26d29c | 3830 | goto invalid_fld; |
bcfc867d | 3831 | } |
1b26d29c PB |
3832 | |
3833 | len = cdb[4]; | |
3834 | hdr_len = 4; | |
3835 | } else { | |
bcfc867d HR |
3836 | if (scmd->cmd_len < 9) { |
3837 | fp = 8; | |
1b26d29c | 3838 | goto invalid_fld; |
bcfc867d | 3839 | } |
1b26d29c | 3840 | |
261e1507 | 3841 | len = get_unaligned_be16(&cdb[7]); |
1b26d29c PB |
3842 | hdr_len = 8; |
3843 | } | |
3844 | ||
3845 | /* We only support PF=1, SP=0. */ | |
bcfc867d HR |
3846 | if ((cdb[1] & 0x11) != 0x10) { |
3847 | fp = 1; | |
0df10b84 | 3848 | bp = (cdb[1] & 0x01) ? 1 : 5; |
1b26d29c | 3849 | goto invalid_fld; |
bcfc867d | 3850 | } |
1b26d29c PB |
3851 | |
3852 | /* Test early for possible overrun. */ | |
3853 | if (!scsi_sg_count(scmd) || scsi_sglist(scmd)->length < len) | |
3854 | goto invalid_param_len; | |
3855 | ||
1b26d29c PB |
3856 | /* Move past header and block descriptors. */ |
3857 | if (len < hdr_len) | |
3858 | goto invalid_param_len; | |
3859 | ||
f650ef61 YB |
3860 | if (!sg_copy_to_buffer(scsi_sglist(scmd), scsi_sg_count(scmd), |
3861 | buffer, sizeof(buffer))) | |
3862 | goto invalid_param_len; | |
3863 | ||
1b26d29c PB |
3864 | if (six_byte) |
3865 | bd_len = p[3]; | |
3866 | else | |
261e1507 | 3867 | bd_len = get_unaligned_be16(&p[6]); |
1b26d29c PB |
3868 | |
3869 | len -= hdr_len; | |
3870 | p += hdr_len; | |
3871 | if (len < bd_len) | |
3872 | goto invalid_param_len; | |
7780081c HR |
3873 | if (bd_len != 0 && bd_len != 8) { |
3874 | fp = (six_byte) ? 3 : 6; | |
3875 | fp += bd_len + hdr_len; | |
1b26d29c | 3876 | goto invalid_param; |
7780081c | 3877 | } |
1b26d29c PB |
3878 | |
3879 | len -= bd_len; | |
3880 | p += bd_len; | |
3881 | if (len == 0) | |
3882 | goto skip; | |
3883 | ||
3884 | /* Parse both possible formats for the mode page headers. */ | |
3885 | pg = p[0] & 0x3f; | |
3886 | if (p[0] & 0x40) { | |
3887 | if (len < 4) | |
3888 | goto invalid_param_len; | |
3889 | ||
3890 | spg = p[1]; | |
261e1507 | 3891 | pg_len = get_unaligned_be16(&p[2]); |
1b26d29c PB |
3892 | p += 4; |
3893 | len -= 4; | |
3894 | } else { | |
3895 | if (len < 2) | |
3896 | goto invalid_param_len; | |
3897 | ||
3898 | spg = 0; | |
3899 | pg_len = p[1]; | |
3900 | p += 2; | |
3901 | len -= 2; | |
3902 | } | |
3903 | ||
3904 | /* | |
df60f9c6 DLM |
3905 | * Supported subpages: all subpages and ATA feature sub-page f2h of |
3906 | * the control page. | |
1b26d29c | 3907 | */ |
df60f9c6 DLM |
3908 | if (spg) { |
3909 | switch (spg) { | |
3910 | case ALL_SUB_MPAGES: | |
3911 | /* All subpages is not supported for the control page */ | |
3912 | if (pg == CONTROL_MPAGE) { | |
3913 | fp = (p[0] & 0x40) ? 1 : 0; | |
3914 | fp += hdr_len + bd_len; | |
3915 | goto invalid_param; | |
3916 | } | |
3917 | break; | |
3918 | case ATA_FEATURE_SUB_MPAGE: | |
3919 | if (qc->dev->flags & ATA_DFLAG_CDL && | |
3920 | pg == CONTROL_MPAGE) | |
3921 | break; | |
3922 | fallthrough; | |
3923 | default: | |
3924 | fp = (p[0] & 0x40) ? 1 : 0; | |
3925 | fp += hdr_len + bd_len; | |
3926 | goto invalid_param; | |
3927 | } | |
7780081c | 3928 | } |
1b26d29c PB |
3929 | if (pg_len > len) |
3930 | goto invalid_param_len; | |
3931 | ||
3932 | switch (pg) { | |
3933 | case CACHE_MPAGE: | |
7780081c HR |
3934 | if (ata_mselect_caching(qc, p, pg_len, &fp) < 0) { |
3935 | fp += hdr_len + bd_len; | |
1b26d29c | 3936 | goto invalid_param; |
7780081c | 3937 | } |
1b26d29c | 3938 | break; |
06dbde5f | 3939 | case CONTROL_MPAGE: |
df60f9c6 DLM |
3940 | ret = ata_mselect_control(qc, spg, p, pg_len, &fp); |
3941 | if (ret < 0) { | |
7780081c | 3942 | fp += hdr_len + bd_len; |
06dbde5f | 3943 | goto invalid_param; |
7780081c | 3944 | } |
df60f9c6 DLM |
3945 | if (!ret) |
3946 | goto skip; /* No ATA command to send */ | |
1b26d29c | 3947 | break; |
df60f9c6 DLM |
3948 | default: |
3949 | /* Invalid page code */ | |
7780081c | 3950 | fp = bd_len + hdr_len; |
1b26d29c PB |
3951 | goto invalid_param; |
3952 | } | |
3953 | ||
3954 | /* | |
3955 | * Only one page has changeable data, so we only support setting one | |
3956 | * page at a time. | |
3957 | */ | |
3958 | if (len > pg_len) | |
3959 | goto invalid_param; | |
3960 | ||
3961 | return 0; | |
3962 | ||
3963 | invalid_fld: | |
0df10b84 | 3964 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); |
1b26d29c PB |
3965 | return 1; |
3966 | ||
3967 | invalid_param: | |
7780081c | 3968 | ata_scsi_set_invalid_parameter(qc->dev, scmd, fp); |
1b26d29c PB |
3969 | return 1; |
3970 | ||
3971 | invalid_param_len: | |
3972 | /* "Parameter list length error" */ | |
06dbde5f | 3973 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); |
1b26d29c PB |
3974 | return 1; |
3975 | ||
3976 | skip: | |
3977 | scmd->result = SAM_STAT_GOOD; | |
3978 | return 1; | |
3979 | } | |
3980 | ||
818831c8 CH |
3981 | static u8 ata_scsi_trusted_op(u32 len, bool send, bool dma) |
3982 | { | |
3983 | if (len == 0) | |
3984 | return ATA_CMD_TRUSTED_NONDATA; | |
3985 | else if (send) | |
3986 | return dma ? ATA_CMD_TRUSTED_SND_DMA : ATA_CMD_TRUSTED_SND; | |
3987 | else | |
3988 | return dma ? ATA_CMD_TRUSTED_RCV_DMA : ATA_CMD_TRUSTED_RCV; | |
3989 | } | |
3990 | ||
3991 | static unsigned int ata_scsi_security_inout_xlat(struct ata_queued_cmd *qc) | |
3992 | { | |
3993 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3994 | const u8 *cdb = scmd->cmnd; | |
3995 | struct ata_taskfile *tf = &qc->tf; | |
3996 | u8 secp = cdb[1]; | |
3997 | bool send = (cdb[0] == SECURITY_PROTOCOL_OUT); | |
3998 | u16 spsp = get_unaligned_be16(&cdb[2]); | |
3999 | u32 len = get_unaligned_be32(&cdb[6]); | |
4000 | bool dma = !(qc->dev->flags & ATA_DFLAG_PIO); | |
4001 | ||
4002 | /* | |
4003 | * We don't support the ATA "security" protocol. | |
4004 | */ | |
4005 | if (secp == 0xef) { | |
4006 | ata_scsi_set_invalid_field(qc->dev, scmd, 1, 0); | |
4007 | return 1; | |
4008 | } | |
4009 | ||
4010 | if (cdb[4] & 7) { /* INC_512 */ | |
4011 | if (len > 0xffff) { | |
4012 | ata_scsi_set_invalid_field(qc->dev, scmd, 6, 0); | |
4013 | return 1; | |
4014 | } | |
4015 | } else { | |
4016 | if (len > 0x01fffe00) { | |
4017 | ata_scsi_set_invalid_field(qc->dev, scmd, 6, 0); | |
4018 | return 1; | |
4019 | } | |
4020 | ||
4021 | /* convert to the sector-based ATA addressing */ | |
4022 | len = (len + 511) / 512; | |
4023 | } | |
4024 | ||
4025 | tf->protocol = dma ? ATA_PROT_DMA : ATA_PROT_PIO; | |
4026 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR | ATA_TFLAG_LBA; | |
4027 | if (send) | |
4028 | tf->flags |= ATA_TFLAG_WRITE; | |
4029 | tf->command = ata_scsi_trusted_op(len, send, dma); | |
4030 | tf->feature = secp; | |
4031 | tf->lbam = spsp & 0xff; | |
4032 | tf->lbah = spsp >> 8; | |
4033 | ||
4034 | if (len) { | |
4035 | tf->nsect = len & 0xff; | |
4036 | tf->lbal = len >> 8; | |
4037 | } else { | |
4038 | if (!send) | |
4039 | tf->lbah = (1 << 7); | |
4040 | } | |
4041 | ||
4042 | ata_qc_set_pc_nbytes(qc); | |
4043 | return 0; | |
4044 | } | |
4045 | ||
b1ffbf85 MI |
4046 | /** |
4047 | * ata_scsi_var_len_cdb_xlat - SATL variable length CDB to Handler | |
4048 | * @qc: Command to be translated | |
4049 | * | |
4050 | * Translate a SCSI variable length CDB to specified commands. | |
4051 | * It checks a service action value in CDB to call corresponding handler. | |
4052 | * | |
4053 | * RETURNS: | |
4054 | * Zero on success, non-zero on failure | |
4055 | * | |
4056 | */ | |
4057 | static unsigned int ata_scsi_var_len_cdb_xlat(struct ata_queued_cmd *qc) | |
4058 | { | |
4059 | struct scsi_cmnd *scmd = qc->scsicmd; | |
4060 | const u8 *cdb = scmd->cmnd; | |
4061 | const u16 sa = get_unaligned_be16(&cdb[8]); | |
4062 | ||
4063 | /* | |
4064 | * if service action represents a ata pass-thru(32) command, | |
4065 | * then pass it to ata_scsi_pass_thru handler. | |
4066 | */ | |
4067 | if (sa == ATA_32) | |
4068 | return ata_scsi_pass_thru(qc); | |
4069 | ||
b1ffbf85 MI |
4070 | /* unsupported service action */ |
4071 | return 1; | |
4072 | } | |
4073 | ||
1da177e4 LT |
4074 | /** |
4075 | * ata_get_xlat_func - check if SCSI to ATA translation is possible | |
4076 | * @dev: ATA device | |
4077 | * @cmd: SCSI command opcode to consider | |
4078 | * | |
4079 | * Look up the SCSI command given, and determine whether the | |
4080 | * SCSI command is to be translated or simulated. | |
4081 | * | |
4082 | * RETURNS: | |
4083 | * Pointer to translation function if possible, %NULL if not. | |
4084 | */ | |
4085 | ||
4086 | static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd) | |
4087 | { | |
4088 | switch (cmd) { | |
4089 | case READ_6: | |
4090 | case READ_10: | |
4091 | case READ_16: | |
4092 | ||
4093 | case WRITE_6: | |
4094 | case WRITE_10: | |
4095 | case WRITE_16: | |
4096 | return ata_scsi_rw_xlat; | |
4097 | ||
0cdd6eb7 | 4098 | case WRITE_SAME_16: |
18f0f978 CH |
4099 | return ata_scsi_write_same_xlat; |
4100 | ||
1da177e4 | 4101 | case SYNCHRONIZE_CACHE: |
ea045fd3 | 4102 | case SYNCHRONIZE_CACHE_16: |
1da177e4 LT |
4103 | if (ata_try_flush_cache(dev)) |
4104 | return ata_scsi_flush_xlat; | |
4105 | break; | |
4106 | ||
4107 | case VERIFY: | |
4108 | case VERIFY_16: | |
4109 | return ata_scsi_verify_xlat; | |
b095518e JG |
4110 | |
4111 | case ATA_12: | |
4112 | case ATA_16: | |
4113 | return ata_scsi_pass_thru; | |
da61396d | 4114 | |
b1ffbf85 MI |
4115 | case VARIABLE_LENGTH_CMD: |
4116 | return ata_scsi_var_len_cdb_xlat; | |
4117 | ||
1b26d29c PB |
4118 | case MODE_SELECT: |
4119 | case MODE_SELECT_10: | |
4120 | return ata_scsi_mode_select_xlat; | |
1b26d29c | 4121 | |
28a3fc22 HR |
4122 | case ZBC_IN: |
4123 | return ata_scsi_zbc_in_xlat; | |
4124 | ||
27708a95 HR |
4125 | case ZBC_OUT: |
4126 | return ata_scsi_zbc_out_xlat; | |
4127 | ||
818831c8 CH |
4128 | case SECURITY_PROTOCOL_IN: |
4129 | case SECURITY_PROTOCOL_OUT: | |
4130 | if (!(dev->flags & ATA_DFLAG_TRUSTED)) | |
4131 | break; | |
4132 | return ata_scsi_security_inout_xlat; | |
4133 | ||
972dcafb DG |
4134 | case START_STOP: |
4135 | return ata_scsi_start_stop_xlat; | |
1da177e4 LT |
4136 | } |
4137 | ||
4138 | return NULL; | |
4139 | } | |
4140 | ||
15964ff7 | 4141 | int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, struct ata_device *dev) |
eb3f0f9c | 4142 | { |
e20e81a2 | 4143 | struct ata_port *ap = dev->link->ap; |
baf4fdfa ML |
4144 | u8 scsi_op = scmd->cmnd[0]; |
4145 | ata_xlat_func_t xlat_func; | |
84eac327 | 4146 | |
e20e81a2 NC |
4147 | /* |
4148 | * scsi_queue_rq() will defer commands if scsi_host_in_recovery(). | |
4149 | * However, this check is done without holding the ap->lock (a libata | |
4150 | * specific lock), so we can have received an error irq since then, | |
4151 | * therefore we must check if EH is pending, while holding ap->lock. | |
4152 | */ | |
4153 | if (ap->pflags & (ATA_PFLAG_EH_PENDING | ATA_PFLAG_EH_IN_PROGRESS)) | |
4154 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
4155 | ||
84eac327 WH |
4156 | if (unlikely(!scmd->cmd_len)) |
4157 | goto bad_cdb_len; | |
2115ea94 | 4158 | |
9162c657 | 4159 | if (dev->class == ATA_DEV_ATA || dev->class == ATA_DEV_ZAC) { |
84eac327 | 4160 | if (unlikely(scmd->cmd_len > dev->cdb_len)) |
baf4fdfa | 4161 | goto bad_cdb_len; |
eb3f0f9c | 4162 | |
baf4fdfa | 4163 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
84eac327 WH |
4164 | } else if (likely((scsi_op != ATA_16) || !atapi_passthru16)) { |
4165 | /* relay SCSI command to ATAPI device */ | |
4166 | int len = COMMAND_SIZE(scsi_op); | |
baf4fdfa | 4167 | |
84eac327 WH |
4168 | if (unlikely(len > scmd->cmd_len || |
4169 | len > dev->cdb_len || | |
4170 | scmd->cmd_len > ATAPI_CDB_LEN)) | |
4171 | goto bad_cdb_len; | |
baf4fdfa | 4172 | |
84eac327 WH |
4173 | xlat_func = atapi_xlat; |
4174 | } else { | |
4175 | /* ATA_16 passthru, treat as an ATA command */ | |
4176 | if (unlikely(scmd->cmd_len > 16)) | |
4177 | goto bad_cdb_len; | |
baf4fdfa | 4178 | |
84eac327 | 4179 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
baf4fdfa ML |
4180 | } |
4181 | ||
4182 | if (xlat_func) | |
84eac327 | 4183 | return ata_scsi_translate(dev, scmd, xlat_func); |
2115ea94 | 4184 | |
84eac327 WH |
4185 | ata_scsi_simulate(dev, scmd); |
4186 | ||
4187 | return 0; | |
baf4fdfa ML |
4188 | |
4189 | bad_cdb_len: | |
baf4fdfa | 4190 | scmd->result = DID_ERROR << 16; |
58bf201d | 4191 | scsi_done(scmd); |
baf4fdfa | 4192 | return 0; |
eb3f0f9c BK |
4193 | } |
4194 | ||
1da177e4 LT |
4195 | /** |
4196 | * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device | |
23e701e6 | 4197 | * @shost: SCSI host of command to be sent |
1da177e4 | 4198 | * @cmd: SCSI command to be sent |
1da177e4 LT |
4199 | * |
4200 | * In some cases, this function translates SCSI commands into | |
4201 | * ATA taskfiles, and queues the taskfiles to be sent to | |
4202 | * hardware. In other cases, this function simulates a | |
4203 | * SCSI device by evaluating and responding to certain | |
4204 | * SCSI commands. This creates the overall effect of | |
4205 | * ATA and ATAPI devices appearing as SCSI devices. | |
4206 | * | |
4207 | * LOCKING: | |
23e701e6 | 4208 | * ATA host lock |
1da177e4 LT |
4209 | * |
4210 | * RETURNS: | |
2115ea94 TH |
4211 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
4212 | * 0 otherwise. | |
1da177e4 | 4213 | */ |
23e701e6 | 4214 | int ata_scsi_queuecmd(struct Scsi_Host *shost, struct scsi_cmnd *cmd) |
1da177e4 LT |
4215 | { |
4216 | struct ata_port *ap; | |
4217 | struct ata_device *dev; | |
4218 | struct scsi_device *scsidev = cmd->device; | |
2115ea94 | 4219 | int rc = 0; |
23e701e6 | 4220 | unsigned long irq_flags; |
1da177e4 | 4221 | |
35bb94b1 | 4222 | ap = ata_shost_to_port(shost); |
005a5a06 | 4223 | |
23e701e6 | 4224 | spin_lock_irqsave(ap->lock, irq_flags); |
1da177e4 | 4225 | |
1da177e4 | 4226 | dev = ata_scsi_find_dev(ap, scsidev); |
eb3f0f9c | 4227 | if (likely(dev)) |
b27dcfb0 | 4228 | rc = __ata_scsi_queuecmd(cmd, dev); |
eb3f0f9c | 4229 | else { |
1da177e4 | 4230 | cmd->result = (DID_BAD_TARGET << 16); |
58bf201d | 4231 | scsi_done(cmd); |
1da177e4 LT |
4232 | } |
4233 | ||
23e701e6 JG |
4234 | spin_unlock_irqrestore(ap->lock, irq_flags); |
4235 | ||
2115ea94 | 4236 | return rc; |
1da177e4 | 4237 | } |
a52fbcfc | 4238 | EXPORT_SYMBOL_GPL(ata_scsi_queuecmd); |
1da177e4 LT |
4239 | |
4240 | /** | |
4241 | * ata_scsi_simulate - simulate SCSI command on ATA device | |
c893a3ae | 4242 | * @dev: the target device |
1da177e4 | 4243 | * @cmd: SCSI command being sent to device. |
1da177e4 LT |
4244 | * |
4245 | * Interprets and directly executes a select list of SCSI commands | |
4246 | * that can be handled internally. | |
4247 | * | |
4248 | * LOCKING: | |
cca3974e | 4249 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
4250 | */ |
4251 | ||
b27dcfb0 | 4252 | void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd) |
1da177e4 LT |
4253 | { |
4254 | struct ata_scsi_args args; | |
057ace5e | 4255 | const u8 *scsicmd = cmd->cmnd; |
45394145 | 4256 | u8 tmp8; |
1da177e4 | 4257 | |
9a3dccc4 TH |
4258 | args.dev = dev; |
4259 | args.id = dev->id; | |
1da177e4 | 4260 | args.cmd = cmd; |
1da177e4 LT |
4261 | |
4262 | switch(scsicmd[0]) { | |
2dcb407e | 4263 | case INQUIRY: |
bcfc867d | 4264 | if (scsicmd[1] & 2) /* is CmdDt set? */ |
8fc6c065 | 4265 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e JG |
4266 | else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */ |
4267 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std); | |
4268 | else switch (scsicmd[2]) { | |
4269 | case 0x00: | |
4270 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00); | |
1da177e4 | 4271 | break; |
2dcb407e JG |
4272 | case 0x80: |
4273 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80); | |
1da177e4 | 4274 | break; |
2dcb407e JG |
4275 | case 0x83: |
4276 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83); | |
1da177e4 | 4277 | break; |
2dcb407e JG |
4278 | case 0x89: |
4279 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89); | |
4280 | break; | |
18f0f978 CH |
4281 | case 0xb0: |
4282 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b0); | |
4283 | break; | |
1e9dbc92 MW |
4284 | case 0xb1: |
4285 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1); | |
4286 | break; | |
02e0a604 MP |
4287 | case 0xb2: |
4288 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b2); | |
4289 | break; | |
6d1003ae | 4290 | case 0xb6: |
fe22e1c2 | 4291 | if (dev->flags & ATA_DFLAG_ZAC) |
6d1003ae | 4292 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b6); |
fe22e1c2 DLM |
4293 | else |
4294 | ata_scsi_set_invalid_field(dev, cmd, 2, 0xff); | |
4295 | break; | |
4296 | case 0xb9: | |
4297 | if (dev->cpr_log) | |
4298 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b9); | |
4299 | else | |
4300 | ata_scsi_set_invalid_field(dev, cmd, 2, 0xff); | |
4301 | break; | |
2dcb407e | 4302 | default: |
8fc6c065 | 4303 | ata_scsi_set_invalid_field(dev, cmd, 2, 0xff); |
1da177e4 | 4304 | break; |
2dcb407e JG |
4305 | } |
4306 | break; | |
4307 | ||
4308 | case MODE_SENSE: | |
4309 | case MODE_SENSE_10: | |
4310 | ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense); | |
4311 | break; | |
4312 | ||
2dcb407e JG |
4313 | case READ_CAPACITY: |
4314 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); | |
4315 | break; | |
4316 | ||
eb846d9f | 4317 | case SERVICE_ACTION_IN_16: |
2dcb407e | 4318 | if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16) |
1da177e4 | 4319 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
2dcb407e | 4320 | else |
8fc6c065 | 4321 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e | 4322 | break; |
1da177e4 | 4323 | |
2dcb407e JG |
4324 | case REPORT_LUNS: |
4325 | ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns); | |
4326 | break; | |
1da177e4 | 4327 | |
2dcb407e | 4328 | case REQUEST_SENSE: |
06dbde5f | 4329 | ata_scsi_set_sense(dev, cmd, 0, 0, 0); |
2dcb407e | 4330 | break; |
1da177e4 | 4331 | |
2dcb407e JG |
4332 | /* if we reach this, then writeback caching is disabled, |
4333 | * turning this into a no-op. | |
4334 | */ | |
4335 | case SYNCHRONIZE_CACHE: | |
ea045fd3 | 4336 | case SYNCHRONIZE_CACHE_16: |
df561f66 | 4337 | fallthrough; |
2dcb407e JG |
4338 | |
4339 | /* no-op's, complete with success */ | |
4340 | case REZERO_UNIT: | |
4341 | case SEEK_6: | |
4342 | case SEEK_10: | |
4343 | case TEST_UNIT_READY: | |
2dcb407e | 4344 | break; |
45394145 | 4345 | |
2dcb407e JG |
4346 | case SEND_DIAGNOSTIC: |
4347 | tmp8 = scsicmd[1] & ~(1 << 3); | |
a0c0b0e9 | 4348 | if (tmp8 != 0x4 || scsicmd[3] || scsicmd[4]) |
8fc6c065 | 4349 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e | 4350 | break; |
1da177e4 | 4351 | |
7b203094 | 4352 | case MAINTENANCE_IN: |
3ef60092 | 4353 | if ((scsicmd[1] & 0x1f) == MI_REPORT_SUPPORTED_OPERATION_CODES) |
7b203094 ST |
4354 | ata_scsi_rbuf_fill(&args, ata_scsiop_maint_in); |
4355 | else | |
8fc6c065 | 4356 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
7b203094 ST |
4357 | break; |
4358 | ||
2dcb407e JG |
4359 | /* all other commands */ |
4360 | default: | |
06dbde5f | 4361 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x20, 0x0); |
2dcb407e | 4362 | /* "Invalid command operation code" */ |
2dcb407e | 4363 | break; |
1da177e4 | 4364 | } |
8fc6c065 | 4365 | |
58bf201d | 4366 | scsi_done(cmd); |
1da177e4 LT |
4367 | } |
4368 | ||
25df73d9 | 4369 | int ata_scsi_add_hosts(struct ata_host *host, const struct scsi_host_template *sht) |
f3187195 TH |
4370 | { |
4371 | int i, rc; | |
4372 | ||
4373 | for (i = 0; i < host->n_ports; i++) { | |
4374 | struct ata_port *ap = host->ports[i]; | |
4375 | struct Scsi_Host *shost; | |
4376 | ||
4377 | rc = -ENOMEM; | |
4378 | shost = scsi_host_alloc(sht, sizeof(struct ata_port *)); | |
4379 | if (!shost) | |
4380 | goto err_alloc; | |
4381 | ||
9ee4f393 | 4382 | shost->eh_noresume = 1; |
f3187195 TH |
4383 | *(struct ata_port **)&shost->hostdata[0] = ap; |
4384 | ap->scsi_host = shost; | |
4385 | ||
d9027470 | 4386 | shost->transportt = ata_scsi_transport_template; |
f3187195 TH |
4387 | shost->unique_id = ap->print_id; |
4388 | shost->max_id = 16; | |
4389 | shost->max_lun = 1; | |
4390 | shost->max_channel = 1; | |
b1ffbf85 | 4391 | shost->max_cmd_len = 32; |
f3187195 | 4392 | |
31cc23b3 TH |
4393 | /* Schedule policy is determined by ->qc_defer() |
4394 | * callback and it needs to see every deferred qc. | |
4395 | * Set host_blocked to 1 to prevent SCSI midlayer from | |
4396 | * automatically deferring requests. | |
4397 | */ | |
4398 | shost->max_host_blocked = 1; | |
4399 | ||
1d72f7ae | 4400 | rc = scsi_add_host_with_dma(shost, &ap->tdev, ap->host->dev); |
f3187195 | 4401 | if (rc) |
1d72f7ae | 4402 | goto err_alloc; |
f3187195 TH |
4403 | } |
4404 | ||
4405 | return 0; | |
4406 | ||
f3187195 TH |
4407 | err_alloc: |
4408 | while (--i >= 0) { | |
4409 | struct Scsi_Host *shost = host->ports[i]->scsi_host; | |
4410 | ||
1d72f7ae | 4411 | /* scsi_host_put() is in ata_devres_release() */ |
f3187195 | 4412 | scsi_remove_host(shost); |
f3187195 TH |
4413 | } |
4414 | return rc; | |
4415 | } | |
4416 | ||
45b8084f LW |
4417 | #ifdef CONFIG_OF |
4418 | static void ata_scsi_assign_ofnode(struct ata_device *dev, struct ata_port *ap) | |
4419 | { | |
4420 | struct scsi_device *sdev = dev->sdev; | |
4421 | struct device *d = ap->host->dev; | |
4422 | struct device_node *np = d->of_node; | |
4423 | struct device_node *child; | |
4424 | ||
4425 | for_each_available_child_of_node(np, child) { | |
4426 | int ret; | |
4427 | u32 val; | |
4428 | ||
4429 | ret = of_property_read_u32(child, "reg", &val); | |
4430 | if (ret) | |
4431 | continue; | |
4432 | if (val == dev->devno) { | |
4433 | dev_dbg(d, "found matching device node\n"); | |
4434 | sdev->sdev_gendev.of_node = child; | |
4435 | return; | |
4436 | } | |
4437 | } | |
4438 | } | |
4439 | #else | |
4440 | static void ata_scsi_assign_ofnode(struct ata_device *dev, struct ata_port *ap) | |
4441 | { | |
4442 | } | |
4443 | #endif | |
4444 | ||
1ae46317 | 4445 | void ata_scsi_scan_host(struct ata_port *ap, int sync) |
644dd0cc | 4446 | { |
1ae46317 TH |
4447 | int tries = 5; |
4448 | struct ata_device *last_failed_dev = NULL; | |
41bda9c9 | 4449 | struct ata_link *link; |
1ae46317 | 4450 | struct ata_device *dev; |
644dd0cc | 4451 | |
1ae46317 | 4452 | repeat: |
1eca4365 TH |
4453 | ata_for_each_link(link, ap, EDGE) { |
4454 | ata_for_each_dev(dev, link, ENABLED) { | |
41bda9c9 TH |
4455 | struct scsi_device *sdev; |
4456 | int channel = 0, id = 0; | |
3edebac4 | 4457 | |
1eca4365 | 4458 | if (dev->sdev) |
41bda9c9 | 4459 | continue; |
3f19ee8c | 4460 | |
41bda9c9 TH |
4461 | if (ata_is_host_link(link)) |
4462 | id = dev->devno; | |
4463 | else | |
4464 | channel = link->pmp; | |
4465 | ||
4466 | sdev = __scsi_add_device(ap->scsi_host, channel, id, 0, | |
4467 | NULL); | |
4468 | if (!IS_ERR(sdev)) { | |
4469 | dev->sdev = sdev; | |
45b8084f | 4470 | ata_scsi_assign_ofnode(dev, ap); |
41bda9c9 | 4471 | scsi_device_put(sdev); |
295124dc GG |
4472 | } else { |
4473 | dev->sdev = NULL; | |
41bda9c9 | 4474 | } |
3edebac4 | 4475 | } |
3f19ee8c | 4476 | } |
1ae46317 TH |
4477 | |
4478 | /* If we scanned while EH was in progress or allocation | |
4479 | * failure occurred, scan would have failed silently. Check | |
4480 | * whether all devices are attached. | |
4481 | */ | |
1eca4365 TH |
4482 | ata_for_each_link(link, ap, EDGE) { |
4483 | ata_for_each_dev(dev, link, ENABLED) { | |
4484 | if (!dev->sdev) | |
41bda9c9 TH |
4485 | goto exit_loop; |
4486 | } | |
1ae46317 | 4487 | } |
41bda9c9 TH |
4488 | exit_loop: |
4489 | if (!link) | |
1ae46317 TH |
4490 | return; |
4491 | ||
4492 | /* we're missing some SCSI devices */ | |
4493 | if (sync) { | |
4494 | /* If caller requested synchrnous scan && we've made | |
4495 | * any progress, sleep briefly and repeat. | |
4496 | */ | |
4497 | if (dev != last_failed_dev) { | |
4498 | msleep(100); | |
4499 | last_failed_dev = dev; | |
4500 | goto repeat; | |
4501 | } | |
4502 | ||
4503 | /* We might be failing to detect boot device, give it | |
4504 | * a few more chances. | |
4505 | */ | |
4506 | if (--tries) { | |
4507 | msleep(100); | |
4508 | goto repeat; | |
4509 | } | |
4510 | ||
a9a79dfe JP |
4511 | ata_port_err(ap, |
4512 | "WARNING: synchronous SCSI scan failed without making any progress, switching to async\n"); | |
1ae46317 TH |
4513 | } |
4514 | ||
ad72cf98 | 4515 | queue_delayed_work(system_long_wq, &ap->hotplug_task, |
1ae46317 | 4516 | round_jiffies_relative(HZ)); |
644dd0cc | 4517 | } |
0ea035a3 TH |
4518 | |
4519 | /** | |
4520 | * ata_scsi_offline_dev - offline attached SCSI device | |
4521 | * @dev: ATA device to offline attached SCSI device for | |
4522 | * | |
4523 | * This function is called from ata_eh_hotplug() and responsible | |
4524 | * for taking the SCSI device attached to @dev offline. This | |
cca3974e | 4525 | * function is called with host lock which protects dev->sdev |
0ea035a3 TH |
4526 | * against clearing. |
4527 | * | |
4528 | * LOCKING: | |
cca3974e | 4529 | * spin_lock_irqsave(host lock) |
0ea035a3 TH |
4530 | * |
4531 | * RETURNS: | |
4532 | * 1 if attached SCSI device exists, 0 otherwise. | |
4533 | */ | |
4534 | int ata_scsi_offline_dev(struct ata_device *dev) | |
4535 | { | |
4536 | if (dev->sdev) { | |
4537 | scsi_device_set_state(dev->sdev, SDEV_OFFLINE); | |
4538 | return 1; | |
4539 | } | |
4540 | return 0; | |
4541 | } | |
580b2102 TH |
4542 | |
4543 | /** | |
4544 | * ata_scsi_remove_dev - remove attached SCSI device | |
4545 | * @dev: ATA device to remove attached SCSI device for | |
4546 | * | |
4547 | * This function is called from ata_eh_scsi_hotplug() and | |
4548 | * responsible for removing the SCSI device attached to @dev. | |
4549 | * | |
4550 | * LOCKING: | |
4551 | * Kernel thread context (may sleep). | |
4552 | */ | |
4553 | static void ata_scsi_remove_dev(struct ata_device *dev) | |
4554 | { | |
9af5c9c9 | 4555 | struct ata_port *ap = dev->link->ap; |
580b2102 TH |
4556 | struct scsi_device *sdev; |
4557 | unsigned long flags; | |
4558 | ||
4559 | /* Alas, we need to grab scan_mutex to ensure SCSI device | |
4560 | * state doesn't change underneath us and thus | |
4561 | * scsi_device_get() always succeeds. The mutex locking can | |
4562 | * be removed if there is __scsi_device_get() interface which | |
4563 | * increments reference counts regardless of device state. | |
4564 | */ | |
cca3974e | 4565 | mutex_lock(&ap->scsi_host->scan_mutex); |
ba6a1308 | 4566 | spin_lock_irqsave(ap->lock, flags); |
580b2102 | 4567 | |
cca3974e | 4568 | /* clearing dev->sdev is protected by host lock */ |
580b2102 TH |
4569 | sdev = dev->sdev; |
4570 | dev->sdev = NULL; | |
4571 | ||
4572 | if (sdev) { | |
4573 | /* If user initiated unplug races with us, sdev can go | |
cca3974e | 4574 | * away underneath us after the host lock and |
580b2102 TH |
4575 | * scan_mutex are released. Hold onto it. |
4576 | */ | |
4577 | if (scsi_device_get(sdev) == 0) { | |
4578 | /* The following ensures the attached sdev is | |
4579 | * offline on return from ata_scsi_offline_dev() | |
4580 | * regardless it wins or loses the race | |
4581 | * against this function. | |
4582 | */ | |
4583 | scsi_device_set_state(sdev, SDEV_OFFLINE); | |
4584 | } else { | |
4585 | WARN_ON(1); | |
4586 | sdev = NULL; | |
4587 | } | |
4588 | } | |
4589 | ||
ba6a1308 | 4590 | spin_unlock_irqrestore(ap->lock, flags); |
cca3974e | 4591 | mutex_unlock(&ap->scsi_host->scan_mutex); |
580b2102 TH |
4592 | |
4593 | if (sdev) { | |
a9a79dfe JP |
4594 | ata_dev_info(dev, "detaching (SCSI %s)\n", |
4595 | dev_name(&sdev->sdev_gendev)); | |
580b2102 TH |
4596 | |
4597 | scsi_remove_device(sdev); | |
4598 | scsi_device_put(sdev); | |
4599 | } | |
4600 | } | |
4601 | ||
41bda9c9 TH |
4602 | static void ata_scsi_handle_link_detach(struct ata_link *link) |
4603 | { | |
4604 | struct ata_port *ap = link->ap; | |
4605 | struct ata_device *dev; | |
4606 | ||
1eca4365 | 4607 | ata_for_each_dev(dev, link, ALL) { |
41bda9c9 TH |
4608 | unsigned long flags; |
4609 | ||
4610 | if (!(dev->flags & ATA_DFLAG_DETACHED)) | |
4611 | continue; | |
4612 | ||
4613 | spin_lock_irqsave(ap->lock, flags); | |
4614 | dev->flags &= ~ATA_DFLAG_DETACHED; | |
4615 | spin_unlock_irqrestore(ap->lock, flags); | |
4616 | ||
f1bc1e4c AL |
4617 | if (zpodd_dev_enabled(dev)) |
4618 | zpodd_exit(dev); | |
4619 | ||
41bda9c9 TH |
4620 | ata_scsi_remove_dev(dev); |
4621 | } | |
4622 | } | |
4623 | ||
2f294968 KCA |
4624 | /** |
4625 | * ata_scsi_media_change_notify - send media change event | |
c5d0e6a0 | 4626 | * @dev: Pointer to the disk device with media change event |
2f294968 KCA |
4627 | * |
4628 | * Tell the block layer to send a media change notification | |
4629 | * event. | |
4630 | * | |
4631 | * LOCKING: | |
854c73a2 | 4632 | * spin_lock_irqsave(host lock) |
2f294968 | 4633 | */ |
854c73a2 | 4634 | void ata_scsi_media_change_notify(struct ata_device *dev) |
2f294968 | 4635 | { |
854c73a2 | 4636 | if (dev->sdev) |
f26792d5 JG |
4637 | sdev_evt_send_simple(dev->sdev, SDEV_EVT_MEDIA_CHANGE, |
4638 | GFP_ATOMIC); | |
2f294968 | 4639 | } |
2f294968 | 4640 | |
580b2102 TH |
4641 | /** |
4642 | * ata_scsi_hotplug - SCSI part of hotplug | |
65f27f38 | 4643 | * @work: Pointer to ATA port to perform SCSI hotplug on |
580b2102 TH |
4644 | * |
4645 | * Perform SCSI part of hotplug. It's executed from a separate | |
4646 | * workqueue after EH completes. This is necessary because SCSI | |
4647 | * hot plugging requires working EH and hot unplugging is | |
4648 | * synchronized with hot plugging with a mutex. | |
4649 | * | |
4650 | * LOCKING: | |
4651 | * Kernel thread context (may sleep). | |
4652 | */ | |
65f27f38 | 4653 | void ata_scsi_hotplug(struct work_struct *work) |
580b2102 | 4654 | { |
65f27f38 DH |
4655 | struct ata_port *ap = |
4656 | container_of(work, struct ata_port, hotplug_task.work); | |
41bda9c9 | 4657 | int i; |
580b2102 | 4658 | |
1fe9fb71 | 4659 | if (ap->pflags & ATA_PFLAG_UNLOADING) |
580b2102 | 4660 | return; |
580b2102 | 4661 | |
ad72cf98 | 4662 | mutex_lock(&ap->scsi_scan_mutex); |
580b2102 | 4663 | |
41bda9c9 TH |
4664 | /* Unplug detached devices. We cannot use link iterator here |
4665 | * because PMP links have to be scanned even if PMP is | |
4666 | * currently not attached. Iterate manually. | |
4667 | */ | |
4668 | ata_scsi_handle_link_detach(&ap->link); | |
4669 | if (ap->pmp_link) | |
4670 | for (i = 0; i < SATA_PMP_MAX_PORTS; i++) | |
4671 | ata_scsi_handle_link_detach(&ap->pmp_link[i]); | |
580b2102 TH |
4672 | |
4673 | /* scan for new ones */ | |
1ae46317 | 4674 | ata_scsi_scan_host(ap, 0); |
580b2102 | 4675 | |
ad72cf98 | 4676 | mutex_unlock(&ap->scsi_scan_mutex); |
580b2102 | 4677 | } |
83c47bcb TH |
4678 | |
4679 | /** | |
4680 | * ata_scsi_user_scan - indication for user-initiated bus scan | |
4681 | * @shost: SCSI host to scan | |
4682 | * @channel: Channel to scan | |
4683 | * @id: ID to scan | |
4684 | * @lun: LUN to scan | |
4685 | * | |
4686 | * This function is called when user explicitly requests bus | |
4687 | * scan. Set probe pending flag and invoke EH. | |
4688 | * | |
4689 | * LOCKING: | |
4690 | * SCSI layer (we don't care) | |
4691 | * | |
4692 | * RETURNS: | |
4693 | * Zero. | |
4694 | */ | |
d9027470 | 4695 | int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, |
9cb78c16 | 4696 | unsigned int id, u64 lun) |
83c47bcb TH |
4697 | { |
4698 | struct ata_port *ap = ata_shost_to_port(shost); | |
4699 | unsigned long flags; | |
41bda9c9 | 4700 | int devno, rc = 0; |
83c47bcb | 4701 | |
41bda9c9 | 4702 | if (lun != SCAN_WILD_CARD && lun) |
83c47bcb TH |
4703 | return -EINVAL; |
4704 | ||
071f44b1 | 4705 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
4706 | if (channel != SCAN_WILD_CARD && channel) |
4707 | return -EINVAL; | |
4708 | devno = id; | |
4709 | } else { | |
4710 | if (id != SCAN_WILD_CARD && id) | |
4711 | return -EINVAL; | |
4712 | devno = channel; | |
4713 | } | |
4714 | ||
ba6a1308 | 4715 | spin_lock_irqsave(ap->lock, flags); |
83c47bcb | 4716 | |
41bda9c9 TH |
4717 | if (devno == SCAN_WILD_CARD) { |
4718 | struct ata_link *link; | |
4719 | ||
1eca4365 | 4720 | ata_for_each_link(link, ap, EDGE) { |
41bda9c9 | 4721 | struct ata_eh_info *ehi = &link->eh_info; |
b558eddd | 4722 | ehi->probe_mask |= ATA_ALL_DEVICES; |
cf480626 | 4723 | ehi->action |= ATA_EH_RESET; |
41bda9c9 | 4724 | } |
83c47bcb | 4725 | } else { |
41bda9c9 | 4726 | struct ata_device *dev = ata_find_dev(ap, devno); |
83c47bcb TH |
4727 | |
4728 | if (dev) { | |
41bda9c9 | 4729 | struct ata_eh_info *ehi = &dev->link->eh_info; |
9af5c9c9 | 4730 | ehi->probe_mask |= 1 << dev->devno; |
cf480626 | 4731 | ehi->action |= ATA_EH_RESET; |
83c47bcb TH |
4732 | } else |
4733 | rc = -EINVAL; | |
4734 | } | |
4735 | ||
309afcb5 | 4736 | if (rc == 0) { |
83c47bcb | 4737 | ata_port_schedule_eh(ap); |
309afcb5 TH |
4738 | spin_unlock_irqrestore(ap->lock, flags); |
4739 | ata_port_wait_eh(ap); | |
4740 | } else | |
4741 | spin_unlock_irqrestore(ap->lock, flags); | |
83c47bcb TH |
4742 | |
4743 | return rc; | |
4744 | } | |
3057ac3c | 4745 | |
4746 | /** | |
d0171269 | 4747 | * ata_scsi_dev_rescan - initiate scsi_rescan_device() |
65f27f38 | 4748 | * @work: Pointer to ATA port to perform scsi_rescan_device() |
3057ac3c | 4749 | * |
d0171269 | 4750 | * After ATA pass thru (SAT) commands are executed successfully, |
ad72cf98 | 4751 | * libata need to propagate the changes to SCSI layer. |
3057ac3c | 4752 | * |
d0171269 TH |
4753 | * LOCKING: |
4754 | * Kernel thread context (may sleep). | |
3057ac3c | 4755 | */ |
65f27f38 | 4756 | void ata_scsi_dev_rescan(struct work_struct *work) |
3057ac3c | 4757 | { |
65f27f38 | 4758 | struct ata_port *ap = |
6aa0365a | 4759 | container_of(work, struct ata_port, scsi_rescan_task.work); |
41bda9c9 | 4760 | struct ata_link *link; |
f58229f8 | 4761 | struct ata_device *dev; |
f84e7e41 | 4762 | unsigned long flags; |
8b4d9469 | 4763 | int ret = 0; |
3057ac3c | 4764 | |
ad72cf98 | 4765 | mutex_lock(&ap->scsi_scan_mutex); |
f84e7e41 TH |
4766 | spin_lock_irqsave(ap->lock, flags); |
4767 | ||
1eca4365 TH |
4768 | ata_for_each_link(link, ap, EDGE) { |
4769 | ata_for_each_dev(dev, link, ENABLED) { | |
41bda9c9 | 4770 | struct scsi_device *sdev = dev->sdev; |
3057ac3c | 4771 | |
8b4d9469 DLM |
4772 | /* |
4773 | * If the port was suspended before this was scheduled, | |
4774 | * bail out. | |
4775 | */ | |
4776 | if (ap->pflags & ATA_PFLAG_SUSPENDED) | |
4777 | goto unlock; | |
4778 | ||
1eca4365 | 4779 | if (!sdev) |
41bda9c9 TH |
4780 | continue; |
4781 | if (scsi_device_get(sdev)) | |
4782 | continue; | |
f84e7e41 | 4783 | |
41bda9c9 | 4784 | spin_unlock_irqrestore(ap->lock, flags); |
8b4d9469 | 4785 | ret = scsi_rescan_device(sdev); |
41bda9c9 TH |
4786 | scsi_device_put(sdev); |
4787 | spin_lock_irqsave(ap->lock, flags); | |
8b4d9469 DLM |
4788 | |
4789 | if (ret) | |
4790 | goto unlock; | |
41bda9c9 | 4791 | } |
3057ac3c | 4792 | } |
f84e7e41 | 4793 | |
8b4d9469 | 4794 | unlock: |
f84e7e41 | 4795 | spin_unlock_irqrestore(ap->lock, flags); |
ad72cf98 | 4796 | mutex_unlock(&ap->scsi_scan_mutex); |
6aa0365a | 4797 | |
8b4d9469 DLM |
4798 | /* Reschedule with a delay if scsi_rescan_device() returned an error */ |
4799 | if (ret) | |
6aa0365a DLM |
4800 | schedule_delayed_work(&ap->scsi_rescan_task, |
4801 | msecs_to_jiffies(5)); | |
3057ac3c | 4802 | } |