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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 | |
c8fa4f8e | 40 | #define ATA_SCSI_RBUF_SIZE 576 |
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 | |
00ac37f5 DG |
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 | |
58 | ||
59 | ||
24f75686 | 60 | static const u8 def_rw_recovery_mpage[RW_RECOVERY_MPAGE_LEN] = { |
00ac37f5 DG |
61 | RW_RECOVERY_MPAGE, |
62 | RW_RECOVERY_MPAGE_LEN - 2, | |
24f75686 | 63 | (1 << 7), /* AWRE */ |
00ac37f5 DG |
64 | 0, /* read retry count */ |
65 | 0, 0, 0, 0, | |
66 | 0, /* write retry count */ | |
67 | 0, 0, 0 | |
68 | }; | |
69 | ||
70 | static const u8 def_cache_mpage[CACHE_MPAGE_LEN] = { | |
71 | CACHE_MPAGE, | |
72 | CACHE_MPAGE_LEN - 2, | |
73 | 0, /* contains WCE, needs to be 0 for logic */ | |
74 | 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
75 | 0, /* contains DRA, needs to be 0 for logic */ | |
76 | 0, 0, 0, 0, 0, 0, 0 | |
77 | }; | |
78 | ||
79 | static const u8 def_control_mpage[CONTROL_MPAGE_LEN] = { | |
80 | CONTROL_MPAGE, | |
81 | CONTROL_MPAGE_LEN - 2, | |
82 | 2, /* DSENSE=0, GLTSD=1 */ | |
83 | 0, /* [QAM+QERR may be 1, see 05-359r1] */ | |
84 | 0, 0, 0, 0, 0xff, 0xff, | |
85 | 0, 30 /* extended self test time, see 05-359r1 */ | |
86 | }; | |
87 | ||
45fabbb7 EO |
88 | static ssize_t ata_scsi_park_show(struct device *device, |
89 | struct device_attribute *attr, char *buf) | |
90 | { | |
91 | struct scsi_device *sdev = to_scsi_device(device); | |
92 | struct ata_port *ap; | |
93 | struct ata_link *link; | |
94 | struct ata_device *dev; | |
3948b6f2 | 95 | unsigned long now; |
3f649ab7 | 96 | unsigned int msecs; |
45fabbb7 EO |
97 | int rc = 0; |
98 | ||
99 | ap = ata_shost_to_port(sdev->host); | |
100 | ||
3948b6f2 | 101 | spin_lock_irq(ap->lock); |
45fabbb7 EO |
102 | dev = ata_scsi_find_dev(ap, sdev); |
103 | if (!dev) { | |
104 | rc = -ENODEV; | |
105 | goto unlock; | |
106 | } | |
107 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { | |
108 | rc = -EOPNOTSUPP; | |
109 | goto unlock; | |
110 | } | |
111 | ||
112 | link = dev->link; | |
a464189d | 113 | now = jiffies; |
45fabbb7 EO |
114 | if (ap->pflags & ATA_PFLAG_EH_IN_PROGRESS && |
115 | link->eh_context.unloaded_mask & (1 << dev->devno) && | |
a464189d EO |
116 | time_after(dev->unpark_deadline, now)) |
117 | msecs = jiffies_to_msecs(dev->unpark_deadline - now); | |
45fabbb7 EO |
118 | else |
119 | msecs = 0; | |
120 | ||
121 | unlock: | |
122 | spin_unlock_irq(ap->lock); | |
123 | ||
0667391e | 124 | return rc ? rc : sysfs_emit(buf, "%u\n", msecs); |
45fabbb7 EO |
125 | } |
126 | ||
127 | static ssize_t ata_scsi_park_store(struct device *device, | |
128 | struct device_attribute *attr, | |
129 | const char *buf, size_t len) | |
130 | { | |
131 | struct scsi_device *sdev = to_scsi_device(device); | |
132 | struct ata_port *ap; | |
133 | struct ata_device *dev; | |
134 | long int input; | |
135 | unsigned long flags; | |
136 | int rc; | |
137 | ||
42b9ab7a JH |
138 | rc = kstrtol(buf, 10, &input); |
139 | if (rc) | |
140 | return rc; | |
141 | if (input < -2) | |
45fabbb7 EO |
142 | return -EINVAL; |
143 | if (input > ATA_TMOUT_MAX_PARK) { | |
144 | rc = -EOVERFLOW; | |
145 | input = ATA_TMOUT_MAX_PARK; | |
146 | } | |
147 | ||
148 | ap = ata_shost_to_port(sdev->host); | |
149 | ||
150 | spin_lock_irqsave(ap->lock, flags); | |
151 | dev = ata_scsi_find_dev(ap, sdev); | |
152 | if (unlikely(!dev)) { | |
153 | rc = -ENODEV; | |
154 | goto unlock; | |
155 | } | |
9162c657 HR |
156 | if (dev->class != ATA_DEV_ATA && |
157 | dev->class != ATA_DEV_ZAC) { | |
45fabbb7 EO |
158 | rc = -EOPNOTSUPP; |
159 | goto unlock; | |
160 | } | |
161 | ||
162 | if (input >= 0) { | |
163 | if (dev->flags & ATA_DFLAG_NO_UNLOAD) { | |
164 | rc = -EOPNOTSUPP; | |
165 | goto unlock; | |
166 | } | |
167 | ||
168 | dev->unpark_deadline = ata_deadline(jiffies, input); | |
169 | dev->link->eh_info.dev_action[dev->devno] |= ATA_EH_PARK; | |
170 | ata_port_schedule_eh(ap); | |
171 | complete(&ap->park_req_pending); | |
172 | } else { | |
173 | switch (input) { | |
174 | case -1: | |
175 | dev->flags &= ~ATA_DFLAG_NO_UNLOAD; | |
176 | break; | |
177 | case -2: | |
178 | dev->flags |= ATA_DFLAG_NO_UNLOAD; | |
179 | break; | |
180 | } | |
181 | } | |
182 | unlock: | |
183 | spin_unlock_irqrestore(ap->lock, flags); | |
184 | ||
185 | return rc ? rc : len; | |
186 | } | |
187 | DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR, | |
188 | ata_scsi_park_show, ata_scsi_park_store); | |
189 | EXPORT_SYMBOL_GPL(dev_attr_unload_heads); | |
190 | ||
4b89ad8e NC |
191 | bool ata_scsi_sense_is_valid(u8 sk, u8 asc, u8 ascq) |
192 | { | |
193 | /* | |
194 | * If sk == NO_SENSE, and asc + ascq == NO ADDITIONAL SENSE INFORMATION, | |
195 | * then there is no sense data to add. | |
196 | */ | |
197 | if (sk == 0 && asc == 0 && ascq == 0) | |
198 | return false; | |
199 | ||
200 | /* If sk > COMPLETED, sense data is bogus. */ | |
201 | if (sk > COMPLETED) | |
202 | return false; | |
203 | ||
204 | return true; | |
205 | } | |
206 | ||
06dbde5f HR |
207 | void ata_scsi_set_sense(struct ata_device *dev, struct scsi_cmnd *cmd, |
208 | u8 sk, u8 asc, u8 ascq) | |
f0761be3 | 209 | { |
06dbde5f HR |
210 | bool d_sense = (dev->flags & ATA_DFLAG_D_SENSE); |
211 | ||
5b01e4b9 HR |
212 | if (!cmd) |
213 | return; | |
214 | ||
f2b1e9c6 | 215 | scsi_build_sense(cmd, d_sense, sk, asc, ascq); |
f0761be3 TH |
216 | } |
217 | ||
492bf621 HR |
218 | void ata_scsi_set_sense_information(struct ata_device *dev, |
219 | struct scsi_cmnd *cmd, | |
220 | const struct ata_taskfile *tf) | |
221 | { | |
222 | u64 information; | |
223 | ||
224 | if (!cmd) | |
225 | return; | |
226 | ||
227 | information = ata_tf_read_block(tf, dev); | |
228 | if (information == U64_MAX) | |
229 | return; | |
230 | ||
231 | scsi_set_sense_information(cmd->sense_buffer, | |
232 | SCSI_SENSE_BUFFERSIZE, information); | |
233 | } | |
234 | ||
bcfc867d | 235 | static void ata_scsi_set_invalid_field(struct ata_device *dev, |
0df10b84 | 236 | struct scsi_cmnd *cmd, u16 field, u8 bit) |
bcfc867d HR |
237 | { |
238 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x24, 0x0); | |
8554e5e1 | 239 | /* "Invalid field in CDB" */ |
bcfc867d | 240 | scsi_set_sense_field_pointer(cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE, |
0df10b84 | 241 | field, bit, 1); |
bcfc867d HR |
242 | } |
243 | ||
7780081c HR |
244 | static void ata_scsi_set_invalid_parameter(struct ata_device *dev, |
245 | struct scsi_cmnd *cmd, u16 field) | |
246 | { | |
247 | /* "Invalid field in parameter list" */ | |
248 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x26, 0x0); | |
249 | scsi_set_sense_field_pointer(cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE, | |
250 | field, 0xff, 0); | |
f0761be3 TH |
251 | } |
252 | ||
c3f69c7f BVA |
253 | static struct attribute *ata_common_sdev_attrs[] = { |
254 | &dev_attr_unload_heads.attr, | |
45fabbb7 EO |
255 | NULL |
256 | }; | |
c3f69c7f BVA |
257 | |
258 | static const struct attribute_group ata_common_sdev_attr_group = { | |
259 | .attrs = ata_common_sdev_attrs | |
260 | }; | |
261 | ||
262 | const struct attribute_group *ata_common_sdev_groups[] = { | |
263 | &ata_common_sdev_attr_group, | |
264 | NULL | |
265 | }; | |
266 | EXPORT_SYMBOL_GPL(ata_common_sdev_groups); | |
45fabbb7 | 267 | |
1da177e4 LT |
268 | /** |
269 | * ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd. | |
270 | * @sdev: SCSI device for which BIOS geometry is to be determined | |
271 | * @bdev: block device associated with @sdev | |
272 | * @capacity: capacity of SCSI device | |
273 | * @geom: location to which geometry will be output | |
274 | * | |
275 | * Generic bios head/sector/cylinder calculator | |
276 | * used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS) | |
277 | * mapping. Some situations may arise where the disk is not | |
278 | * bootable if this is not used. | |
279 | * | |
280 | * LOCKING: | |
281 | * Defined by the SCSI layer. We don't really care. | |
282 | * | |
283 | * RETURNS: | |
284 | * Zero. | |
285 | */ | |
286 | int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, | |
287 | sector_t capacity, int geom[]) | |
288 | { | |
289 | geom[0] = 255; | |
290 | geom[1] = 63; | |
291 | sector_div(capacity, 255*63); | |
292 | geom[2] = capacity; | |
293 | ||
294 | return 0; | |
295 | } | |
a52fbcfc | 296 | EXPORT_SYMBOL_GPL(ata_std_bios_param); |
1da177e4 | 297 | |
d8d9129e TH |
298 | /** |
299 | * ata_scsi_unlock_native_capacity - unlock native capacity | |
300 | * @sdev: SCSI device to adjust device capacity for | |
301 | * | |
302 | * This function is called if a partition on @sdev extends beyond | |
303 | * the end of the device. It requests EH to unlock HPA. | |
304 | * | |
305 | * LOCKING: | |
306 | * Defined by the SCSI layer. Might sleep. | |
307 | */ | |
308 | void ata_scsi_unlock_native_capacity(struct scsi_device *sdev) | |
309 | { | |
310 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
311 | struct ata_device *dev; | |
312 | unsigned long flags; | |
313 | ||
314 | spin_lock_irqsave(ap->lock, flags); | |
315 | ||
316 | dev = ata_scsi_find_dev(ap, sdev); | |
317 | if (dev && dev->n_sectors < dev->n_native_sectors) { | |
318 | dev->flags |= ATA_DFLAG_UNLOCK_HPA; | |
319 | dev->link->eh_info.action |= ATA_EH_RESET; | |
320 | ata_port_schedule_eh(ap); | |
321 | } | |
322 | ||
323 | spin_unlock_irqrestore(ap->lock, flags); | |
324 | ata_port_wait_eh(ap); | |
325 | } | |
a52fbcfc | 326 | EXPORT_SYMBOL_GPL(ata_scsi_unlock_native_capacity); |
d8d9129e | 327 | |
5924b74c TH |
328 | /** |
329 | * ata_get_identity - Handler for HDIO_GET_IDENTITY ioctl | |
5eb66fe0 | 330 | * @ap: target port |
5924b74c TH |
331 | * @sdev: SCSI device to get identify data for |
332 | * @arg: User buffer area for identify data | |
333 | * | |
334 | * LOCKING: | |
335 | * Defined by the SCSI layer. We don't really care. | |
336 | * | |
337 | * RETURNS: | |
338 | * Zero on success, negative errno on error. | |
339 | */ | |
94be9a58 JG |
340 | static int ata_get_identity(struct ata_port *ap, struct scsi_device *sdev, |
341 | void __user *arg) | |
5924b74c | 342 | { |
5924b74c TH |
343 | struct ata_device *dev = ata_scsi_find_dev(ap, sdev); |
344 | u16 __user *dst = arg; | |
345 | char buf[40]; | |
346 | ||
347 | if (!dev) | |
348 | return -ENOMSG; | |
349 | ||
350 | if (copy_to_user(dst, dev->id, ATA_ID_WORDS * sizeof(u16))) | |
351 | return -EFAULT; | |
352 | ||
353 | ata_id_string(dev->id, buf, ATA_ID_PROD, ATA_ID_PROD_LEN); | |
354 | if (copy_to_user(dst + ATA_ID_PROD, buf, ATA_ID_PROD_LEN)) | |
355 | return -EFAULT; | |
356 | ||
357 | ata_id_string(dev->id, buf, ATA_ID_FW_REV, ATA_ID_FW_REV_LEN); | |
358 | if (copy_to_user(dst + ATA_ID_FW_REV, buf, ATA_ID_FW_REV_LEN)) | |
359 | return -EFAULT; | |
360 | ||
361 | ata_id_string(dev->id, buf, ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
362 | if (copy_to_user(dst + ATA_ID_SERNO, buf, ATA_ID_SERNO_LEN)) | |
363 | return -EFAULT; | |
364 | ||
365 | return 0; | |
366 | } | |
367 | ||
b095518e JG |
368 | /** |
369 | * ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl | |
8e8b77dd | 370 | * @scsidev: Device to which we are issuing command |
b095518e JG |
371 | * @arg: User provided data for issuing command |
372 | * | |
373 | * LOCKING: | |
374 | * Defined by the SCSI layer. We don't really care. | |
375 | * | |
376 | * RETURNS: | |
377 | * Zero on success, negative errno on error. | |
378 | */ | |
b095518e JG |
379 | int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg) |
380 | { | |
381 | int rc = 0; | |
429296cc | 382 | u8 sensebuf[SCSI_SENSE_BUFFERSIZE]; |
b095518e | 383 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
429296cc | 384 | u8 args[4], *argbuf = NULL; |
b095518e | 385 | int argsize = 0; |
76aaf87b | 386 | struct scsi_sense_hdr sshdr; |
5fa7b072 MC |
387 | const struct scsi_exec_args exec_args = { |
388 | .sshdr = &sshdr, | |
389 | .sense = sensebuf, | |
390 | .sense_len = sizeof(sensebuf), | |
391 | }; | |
bbe1fe7e | 392 | int cmd_result; |
b095518e | 393 | |
c893a3ae | 394 | if (arg == NULL) |
b095518e JG |
395 | return -EINVAL; |
396 | ||
397 | if (copy_from_user(args, arg, sizeof(args))) | |
398 | return -EFAULT; | |
399 | ||
429296cc | 400 | memset(sensebuf, 0, sizeof(sensebuf)); |
b095518e JG |
401 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
402 | ||
403 | if (args[3]) { | |
295124dc | 404 | argsize = ATA_SECT_SIZE * args[3]; |
b095518e | 405 | argbuf = kmalloc(argsize, GFP_KERNEL); |
54dac83c JR |
406 | if (argbuf == NULL) { |
407 | rc = -ENOMEM; | |
408 | goto error; | |
409 | } | |
b095518e JG |
410 | |
411 | scsi_cmd[1] = (4 << 1); /* PIO Data-in */ | |
412 | scsi_cmd[2] = 0x0e; /* no off.line or cc, read from dev, | |
2dcb407e | 413 | block count in sector count field */ |
b095518e JG |
414 | } else { |
415 | scsi_cmd[1] = (3 << 1); /* Non-data */ | |
bbe1fe7e | 416 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
b095518e JG |
417 | } |
418 | ||
419 | scsi_cmd[0] = ATA_16; | |
420 | ||
421 | scsi_cmd[4] = args[2]; | |
a4f19040 | 422 | if (args[0] == ATA_CMD_SMART) { /* hack -- ide driver does this too */ |
b095518e JG |
423 | scsi_cmd[6] = args[3]; |
424 | scsi_cmd[8] = args[1]; | |
f355eece LW |
425 | scsi_cmd[10] = ATA_SMART_LBAM_PASS; |
426 | scsi_cmd[12] = ATA_SMART_LBAH_PASS; | |
b095518e JG |
427 | } else { |
428 | scsi_cmd[6] = args[1]; | |
429 | } | |
430 | scsi_cmd[14] = args[0]; | |
431 | ||
432 | /* Good values for timeout and retries? Values below | |
433 | from scsi_ioctl_send_command() for default case... */ | |
5fa7b072 MC |
434 | cmd_result = scsi_execute_cmd(scsidev, scsi_cmd, REQ_OP_DRV_IN, argbuf, |
435 | argsize, 10 * HZ, 5, &exec_args); | |
ced202f7 HR |
436 | if (cmd_result < 0) { |
437 | rc = cmd_result; | |
438 | goto error; | |
439 | } | |
464a00c9 | 440 | if (scsi_sense_valid(&sshdr)) {/* sense data available */ |
bbe1fe7e | 441 | u8 *desc = sensebuf + 8; |
bbe1fe7e ET |
442 | |
443 | /* If we set cc then ATA pass-through will cause a | |
444 | * check condition even if no error. Filter that. */ | |
464a00c9 | 445 | if (scsi_status_is_check_condition(cmd_result)) { |
6d3bfc7b KM |
446 | if (sshdr.sense_key == RECOVERED_ERROR && |
447 | sshdr.asc == 0 && sshdr.ascq == 0x1d) | |
bbe1fe7e ET |
448 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
449 | } | |
450 | ||
451 | /* Send userspace a few ATA registers (same as drivers/ide) */ | |
2dcb407e JG |
452 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ |
453 | desc[0] == 0x09) { /* code is "ATA Descriptor" */ | |
454 | args[0] = desc[13]; /* status */ | |
455 | args[1] = desc[3]; /* error */ | |
456 | args[2] = desc[5]; /* sector count (0:7) */ | |
bbe1fe7e ET |
457 | if (copy_to_user(arg, args, sizeof(args))) |
458 | rc = -EFAULT; | |
459 | } | |
460 | } | |
461 | ||
462 | ||
463 | if (cmd_result) { | |
b095518e JG |
464 | rc = -EIO; |
465 | goto error; | |
466 | } | |
467 | ||
b095518e | 468 | if ((argbuf) |
c893a3ae | 469 | && copy_to_user(arg + sizeof(args), argbuf, argsize)) |
b095518e JG |
470 | rc = -EFAULT; |
471 | error: | |
8f760780 | 472 | kfree(argbuf); |
b095518e JG |
473 | return rc; |
474 | } | |
475 | ||
476 | /** | |
477 | * ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl | |
8e8b77dd | 478 | * @scsidev: Device to which we are issuing command |
b095518e JG |
479 | * @arg: User provided data for issuing command |
480 | * | |
481 | * LOCKING: | |
482 | * Defined by the SCSI layer. We don't really care. | |
483 | * | |
484 | * RETURNS: | |
485 | * Zero on success, negative errno on error. | |
486 | */ | |
487 | int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) | |
488 | { | |
489 | int rc = 0; | |
429296cc | 490 | u8 sensebuf[SCSI_SENSE_BUFFERSIZE]; |
b095518e | 491 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
429296cc | 492 | u8 args[7]; |
76aaf87b | 493 | struct scsi_sense_hdr sshdr; |
af068bd1 | 494 | int cmd_result; |
5fa7b072 MC |
495 | const struct scsi_exec_args exec_args = { |
496 | .sshdr = &sshdr, | |
497 | .sense = sensebuf, | |
498 | .sense_len = sizeof(sensebuf), | |
499 | }; | |
b095518e | 500 | |
c893a3ae | 501 | if (arg == NULL) |
b095518e JG |
502 | return -EINVAL; |
503 | ||
504 | if (copy_from_user(args, arg, sizeof(args))) | |
505 | return -EFAULT; | |
506 | ||
429296cc | 507 | memset(sensebuf, 0, sizeof(sensebuf)); |
b095518e JG |
508 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
509 | scsi_cmd[0] = ATA_16; | |
510 | scsi_cmd[1] = (3 << 1); /* Non-data */ | |
af068bd1 | 511 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
b095518e JG |
512 | scsi_cmd[4] = args[1]; |
513 | scsi_cmd[6] = args[2]; | |
514 | scsi_cmd[8] = args[3]; | |
515 | scsi_cmd[10] = args[4]; | |
516 | scsi_cmd[12] = args[5]; | |
277239f2 | 517 | scsi_cmd[13] = args[6] & 0x4f; |
b095518e JG |
518 | scsi_cmd[14] = args[0]; |
519 | ||
b095518e | 520 | /* Good values for timeout and retries? Values below |
2e9edbf8 | 521 | from scsi_ioctl_send_command() for default case... */ |
5fa7b072 MC |
522 | cmd_result = scsi_execute_cmd(scsidev, scsi_cmd, REQ_OP_DRV_IN, NULL, |
523 | 0, 10 * HZ, 5, &exec_args); | |
ced202f7 HR |
524 | if (cmd_result < 0) { |
525 | rc = cmd_result; | |
526 | goto error; | |
527 | } | |
464a00c9 | 528 | if (scsi_sense_valid(&sshdr)) {/* sense data available */ |
af068bd1 | 529 | u8 *desc = sensebuf + 8; |
af068bd1 DM |
530 | |
531 | /* If we set cc then ATA pass-through will cause a | |
532 | * check condition even if no error. Filter that. */ | |
533 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { | |
6d3bfc7b KM |
534 | if (sshdr.sense_key == RECOVERED_ERROR && |
535 | sshdr.asc == 0 && sshdr.ascq == 0x1d) | |
af068bd1 DM |
536 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
537 | } | |
538 | ||
539 | /* Send userspace ATA registers */ | |
540 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ | |
541 | desc[0] == 0x09) {/* code is "ATA Descriptor" */ | |
542 | args[0] = desc[13]; /* status */ | |
543 | args[1] = desc[3]; /* error */ | |
544 | args[2] = desc[5]; /* sector count (0:7) */ | |
545 | args[3] = desc[7]; /* lbal */ | |
546 | args[4] = desc[9]; /* lbam */ | |
547 | args[5] = desc[11]; /* lbah */ | |
548 | args[6] = desc[12]; /* select */ | |
549 | if (copy_to_user(arg, args, sizeof(args))) | |
550 | rc = -EFAULT; | |
551 | } | |
552 | } | |
553 | ||
554 | if (cmd_result) { | |
b095518e | 555 | rc = -EIO; |
af068bd1 DM |
556 | goto error; |
557 | } | |
b095518e | 558 | |
af068bd1 | 559 | error: |
b095518e JG |
560 | return rc; |
561 | } | |
562 | ||
0184898d | 563 | static bool ata_ioc32(struct ata_port *ap) |
e3cf95dd AC |
564 | { |
565 | if (ap->flags & ATA_FLAG_PIO_DMA) | |
0184898d | 566 | return true; |
e3cf95dd | 567 | if (ap->pflags & ATA_PFLAG_PIO32) |
0184898d SS |
568 | return true; |
569 | return false; | |
e3cf95dd AC |
570 | } |
571 | ||
75c0b0e1 AB |
572 | /* |
573 | * This handles both native and compat commands, so anything added | |
574 | * here must have a compatible argument, or check in_compat_syscall() | |
575 | */ | |
94be9a58 | 576 | int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev, |
6f4e626f | 577 | unsigned int cmd, void __user *arg) |
1da177e4 | 578 | { |
287e6611 AB |
579 | unsigned long val; |
580 | int rc = -EINVAL; | |
e3cf95dd | 581 | unsigned long flags; |
1da177e4 | 582 | |
1da177e4 | 583 | switch (cmd) { |
287e6611 | 584 | case HDIO_GET_32BIT: |
e3cf95dd AC |
585 | spin_lock_irqsave(ap->lock, flags); |
586 | val = ata_ioc32(ap); | |
587 | spin_unlock_irqrestore(ap->lock, flags); | |
75c0b0e1 AB |
588 | #ifdef CONFIG_COMPAT |
589 | if (in_compat_syscall()) | |
590 | return put_user(val, (compat_ulong_t __user *)arg); | |
591 | #endif | |
287e6611 | 592 | return put_user(val, (unsigned long __user *)arg); |
1da177e4 | 593 | |
287e6611 | 594 | case HDIO_SET_32BIT: |
1da177e4 | 595 | val = (unsigned long) arg; |
e3cf95dd AC |
596 | rc = 0; |
597 | spin_lock_irqsave(ap->lock, flags); | |
598 | if (ap->pflags & ATA_PFLAG_PIO32CHANGE) { | |
599 | if (val) | |
600 | ap->pflags |= ATA_PFLAG_PIO32; | |
601 | else | |
602 | ap->pflags &= ~ATA_PFLAG_PIO32; | |
603 | } else { | |
604 | if (val != ata_ioc32(ap)) | |
605 | rc = -EINVAL; | |
606 | } | |
607 | spin_unlock_irqrestore(ap->lock, flags); | |
608 | return rc; | |
1da177e4 | 609 | |
5924b74c | 610 | case HDIO_GET_IDENTITY: |
94be9a58 | 611 | return ata_get_identity(ap, scsidev, arg); |
5924b74c | 612 | |
b095518e JG |
613 | case HDIO_DRIVE_CMD: |
614 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
615 | return -EACCES; | |
616 | return ata_cmd_ioctl(scsidev, arg); | |
617 | ||
618 | case HDIO_DRIVE_TASK: | |
619 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
620 | return -EACCES; | |
621 | return ata_task_ioctl(scsidev, arg); | |
622 | ||
1da177e4 LT |
623 | default: |
624 | rc = -ENOTTY; | |
625 | break; | |
626 | } | |
627 | ||
1da177e4 LT |
628 | return rc; |
629 | } | |
94be9a58 JG |
630 | EXPORT_SYMBOL_GPL(ata_sas_scsi_ioctl); |
631 | ||
6f4e626f NC |
632 | int ata_scsi_ioctl(struct scsi_device *scsidev, unsigned int cmd, |
633 | void __user *arg) | |
94be9a58 JG |
634 | { |
635 | return ata_sas_scsi_ioctl(ata_shost_to_port(scsidev->host), | |
636 | scsidev, cmd, arg); | |
637 | } | |
638 | EXPORT_SYMBOL_GPL(ata_scsi_ioctl); | |
1da177e4 LT |
639 | |
640 | /** | |
641 | * ata_scsi_qc_new - acquire new ata_queued_cmd reference | |
1da177e4 LT |
642 | * @dev: ATA device to which the new command is attached |
643 | * @cmd: SCSI command that originated this ATA command | |
1da177e4 LT |
644 | * |
645 | * Obtain a reference to an unused ata_queued_cmd structure, | |
646 | * which is the basic libata structure representing a single | |
647 | * ATA command sent to the hardware. | |
648 | * | |
649 | * If a command was available, fill in the SCSI-specific | |
650 | * portions of the structure with information on the | |
651 | * current command. | |
652 | * | |
653 | * LOCKING: | |
cca3974e | 654 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
655 | * |
656 | * RETURNS: | |
657 | * Command allocated, or %NULL if none available. | |
658 | */ | |
7102d230 | 659 | static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev, |
b27dcfb0 | 660 | struct scsi_cmnd *cmd) |
1da177e4 | 661 | { |
4f1a22ee | 662 | struct ata_port *ap = dev->link->ap; |
1da177e4 | 663 | struct ata_queued_cmd *qc; |
4f1a22ee JG |
664 | int tag; |
665 | ||
4cb7c6f1 | 666 | if (unlikely(ata_port_is_frozen(ap))) |
4f1a22ee JG |
667 | goto fail; |
668 | ||
669 | if (ap->flags & ATA_FLAG_SAS_HOST) { | |
670 | /* | |
671 | * SAS hosts may queue > ATA_MAX_QUEUE commands so use | |
672 | * unique per-device budget token as a tag. | |
673 | */ | |
674 | if (WARN_ON_ONCE(cmd->budget_token >= ATA_MAX_QUEUE)) | |
675 | goto fail; | |
676 | tag = cmd->budget_token; | |
677 | } else { | |
678 | tag = scsi_cmd_to_rq(cmd)->tag; | |
679 | } | |
1da177e4 | 680 | |
4f1a22ee JG |
681 | qc = __ata_qc_from_tag(ap, tag); |
682 | qc->tag = qc->hw_tag = tag; | |
683 | qc->ap = ap; | |
684 | qc->dev = dev; | |
1da177e4 | 685 | |
4f1a22ee | 686 | ata_qc_reinit(qc); |
7eb49509 | 687 | |
4f1a22ee JG |
688 | qc->scsicmd = cmd; |
689 | qc->scsidone = scsi_done; | |
690 | ||
691 | qc->sg = scsi_sglist(cmd); | |
692 | qc->n_elem = scsi_sg_count(cmd); | |
693 | ||
694 | if (scsi_cmd_to_rq(cmd)->rq_flags & RQF_QUIET) | |
695 | qc->flags |= ATA_QCFLAG_QUIET; | |
1da177e4 LT |
696 | |
697 | return qc; | |
4f1a22ee JG |
698 | |
699 | fail: | |
700 | set_host_byte(cmd, DID_OK); | |
701 | set_status_byte(cmd, SAM_STAT_TASK_SET_FULL); | |
702 | scsi_done(cmd); | |
703 | return NULL; | |
1da177e4 LT |
704 | } |
705 | ||
aacda375 TH |
706 | static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc) |
707 | { | |
708 | struct scsi_cmnd *scmd = qc->scsicmd; | |
709 | ||
bdf8710d | 710 | qc->extrabytes = scmd->extra_len; |
aacda375 TH |
711 | qc->nbytes = scsi_bufflen(scmd) + qc->extrabytes; |
712 | } | |
713 | ||
b095518e JG |
714 | /** |
715 | * ata_dump_status - user friendly display of error info | |
41d4c60f | 716 | * @ap: the port in question |
b095518e JG |
717 | * @tf: ptr to filled out taskfile |
718 | * | |
719 | * Decode and dump the ATA error/status registers for the user so | |
720 | * that they have some idea what really happened at the non | |
721 | * make-believe layer. | |
722 | * | |
723 | * LOCKING: | |
724 | * inherited from caller | |
725 | */ | |
41d4c60f | 726 | static void ata_dump_status(struct ata_port *ap, struct ata_taskfile *tf) |
b095518e | 727 | { |
efcef265 | 728 | u8 stat = tf->status, err = tf->error; |
b095518e | 729 | |
b095518e | 730 | if (stat & ATA_BUSY) { |
41d4c60f | 731 | ata_port_warn(ap, "status=0x%02x {Busy} ", stat); |
b095518e | 732 | } else { |
41d4c60f HR |
733 | ata_port_warn(ap, "status=0x%02x { %s%s%s%s%s%s%s} ", stat, |
734 | stat & ATA_DRDY ? "DriveReady " : "", | |
735 | stat & ATA_DF ? "DeviceFault " : "", | |
736 | stat & ATA_DSC ? "SeekComplete " : "", | |
737 | stat & ATA_DRQ ? "DataRequest " : "", | |
738 | stat & ATA_CORR ? "CorrectedError " : "", | |
739 | stat & ATA_SENSE ? "Sense " : "", | |
740 | stat & ATA_ERR ? "Error " : ""); | |
741 | if (err) | |
742 | ata_port_warn(ap, "error=0x%02x {%s%s%s%s%s%s", err, | |
743 | err & ATA_ABORTED ? | |
744 | "DriveStatusError " : "", | |
745 | err & ATA_ICRC ? | |
746 | (err & ATA_ABORTED ? | |
747 | "BadCRC " : "Sector ") : "", | |
748 | err & ATA_UNC ? "UncorrectableError " : "", | |
749 | err & ATA_IDNF ? "SectorIdNotFound " : "", | |
750 | err & ATA_TRK0NF ? "TrackZeroNotFound " : "", | |
751 | err & ATA_AMNF ? "AddrMarkNotFound " : ""); | |
b095518e JG |
752 | } |
753 | } | |
754 | ||
1da177e4 LT |
755 | /** |
756 | * ata_to_sense_error - convert ATA error to SCSI error | |
8e8b77dd | 757 | * @id: ATA device number |
1da177e4 | 758 | * @drv_stat: value contained in ATA status register |
b095518e JG |
759 | * @drv_err: value contained in ATA error register |
760 | * @sk: the sense key we'll fill out | |
761 | * @asc: the additional sense code we'll fill out | |
762 | * @ascq: the additional sense code qualifier we'll fill out | |
246619da | 763 | * @verbose: be verbose |
1da177e4 | 764 | * |
b095518e JG |
765 | * Converts an ATA error into a SCSI error. Fill out pointers to |
766 | * SK, ASC, and ASCQ bytes for later use in fixed or descriptor | |
767 | * format sense blocks. | |
1da177e4 LT |
768 | * |
769 | * LOCKING: | |
cca3974e | 770 | * spin_lock_irqsave(host lock) |
1da177e4 | 771 | */ |
7102d230 AB |
772 | static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, |
773 | u8 *asc, u8 *ascq, int verbose) | |
1da177e4 | 774 | { |
b095518e | 775 | int i; |
ffe75ef6 | 776 | |
1da177e4 | 777 | /* Based on the 3ware driver translation table */ |
98ac62de | 778 | static const unsigned char sense_table[][4] = { |
1da177e4 | 779 | /* BBD|ECC|ID|MAR */ |
8ae72044 HR |
780 | {0xd1, ABORTED_COMMAND, 0x00, 0x00}, |
781 | // Device busy Aborted command | |
1da177e4 | 782 | /* BBD|ECC|ID */ |
8ae72044 HR |
783 | {0xd0, ABORTED_COMMAND, 0x00, 0x00}, |
784 | // Device busy Aborted command | |
1da177e4 | 785 | /* ECC|MC|MARK */ |
8ae72044 HR |
786 | {0x61, HARDWARE_ERROR, 0x00, 0x00}, |
787 | // Device fault Hardware error | |
1da177e4 | 788 | /* ICRC|ABRT */ /* NB: ICRC & !ABRT is BBD */ |
8ae72044 HR |
789 | {0x84, ABORTED_COMMAND, 0x47, 0x00}, |
790 | // Data CRC error SCSI parity error | |
1da177e4 | 791 | /* MC|ID|ABRT|TRK0|MARK */ |
8ae72044 HR |
792 | {0x37, NOT_READY, 0x04, 0x00}, |
793 | // Unit offline Not ready | |
1da177e4 | 794 | /* MCR|MARK */ |
8ae72044 HR |
795 | {0x09, NOT_READY, 0x04, 0x00}, |
796 | // Unrecovered disk error Not ready | |
1da177e4 | 797 | /* Bad address mark */ |
8ae72044 HR |
798 | {0x01, MEDIUM_ERROR, 0x13, 0x00}, |
799 | // Address mark not found for data field | |
800 | /* TRK0 - Track 0 not found */ | |
801 | {0x02, HARDWARE_ERROR, 0x00, 0x00}, | |
802 | // Hardware error | |
78062c50 | 803 | /* Abort: 0x04 is not translated here, see below */ |
1da177e4 | 804 | /* Media change request */ |
8ae72044 HR |
805 | {0x08, NOT_READY, 0x04, 0x00}, |
806 | // FIXME: faking offline | |
807 | /* SRV/IDNF - ID not found */ | |
808 | {0x10, ILLEGAL_REQUEST, 0x21, 0x00}, | |
809 | // Logical address out of range | |
810 | /* MC - Media Changed */ | |
811 | {0x20, UNIT_ATTENTION, 0x28, 0x00}, | |
812 | // Not ready to ready change, medium may have changed | |
813 | /* ECC - Uncorrectable ECC error */ | |
814 | {0x40, MEDIUM_ERROR, 0x11, 0x04}, | |
815 | // Unrecovered read error | |
1da177e4 | 816 | /* BBD - block marked bad */ |
8ae72044 HR |
817 | {0x80, MEDIUM_ERROR, 0x11, 0x04}, |
818 | // Block marked bad Medium error, unrecovered read error | |
1da177e4 LT |
819 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
820 | }; | |
98ac62de | 821 | static const unsigned char stat_table[][4] = { |
1da177e4 | 822 | /* Must be first because BUSY means no other bits valid */ |
8ae72044 HR |
823 | {0x80, ABORTED_COMMAND, 0x47, 0x00}, |
824 | // Busy, fake parity for now | |
825 | {0x40, ILLEGAL_REQUEST, 0x21, 0x04}, | |
826 | // Device ready, unaligned write command | |
827 | {0x20, HARDWARE_ERROR, 0x44, 0x00}, | |
828 | // Device fault, internal target failure | |
829 | {0x08, ABORTED_COMMAND, 0x47, 0x00}, | |
830 | // Timed out in xfer, fake parity for now | |
831 | {0x04, RECOVERED_ERROR, 0x11, 0x00}, | |
832 | // Recovered ECC error Medium error, recovered | |
1da177e4 LT |
833 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
834 | }; | |
1da177e4 | 835 | |
1da177e4 LT |
836 | /* |
837 | * Is this an error we can process/parse | |
838 | */ | |
b095518e JG |
839 | if (drv_stat & ATA_BUSY) { |
840 | drv_err = 0; /* Ignore the err bits, they're invalid */ | |
1da177e4 | 841 | } |
b095518e JG |
842 | |
843 | if (drv_err) { | |
844 | /* Look for drv_err */ | |
845 | for (i = 0; sense_table[i][0] != 0xFF; i++) { | |
846 | /* Look for best matches first */ | |
2e9edbf8 | 847 | if ((sense_table[i][0] & drv_err) == |
b095518e JG |
848 | sense_table[i][0]) { |
849 | *sk = sense_table[i][1]; | |
850 | *asc = sense_table[i][2]; | |
851 | *ascq = sense_table[i][3]; | |
852 | goto translate_done; | |
853 | } | |
854 | } | |
1da177e4 | 855 | } |
b095518e | 856 | |
78062c50 GG |
857 | /* |
858 | * Fall back to interpreting status bits. Note that if the drv_err | |
859 | * has only the ABRT bit set, we decode drv_stat. ABRT by itself | |
860 | * is not descriptive enough. | |
861 | */ | |
b095518e JG |
862 | for (i = 0; stat_table[i][0] != 0xFF; i++) { |
863 | if (stat_table[i][0] & drv_stat) { | |
864 | *sk = stat_table[i][1]; | |
865 | *asc = stat_table[i][2]; | |
866 | *ascq = stat_table[i][3]; | |
867 | goto translate_done; | |
1da177e4 | 868 | } |
b095518e | 869 | } |
b095518e | 870 | |
78062c50 GG |
871 | /* |
872 | * We need a sensible error return here, which is tricky, and one | |
873 | * that won't cause people to do things like return a disk wrongly. | |
874 | */ | |
2d202024 AC |
875 | *sk = ABORTED_COMMAND; |
876 | *asc = 0x00; | |
877 | *ascq = 0x00; | |
b095518e JG |
878 | |
879 | translate_done: | |
246619da | 880 | if (verbose) |
6ef56325 | 881 | pr_err("ata%u: translated ATA stat/err 0x%02x/%02x to SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n", |
246619da | 882 | id, drv_stat, drv_err, *sk, *asc, *ascq); |
b095518e JG |
883 | return; |
884 | } | |
885 | ||
886 | /* | |
750426aa | 887 | * ata_gen_passthru_sense - Generate check condition sense block. |
b095518e JG |
888 | * @qc: Command that completed. |
889 | * | |
890 | * This function is specific to the ATA descriptor format sense | |
891 | * block specified for the ATA pass through commands. Regardless | |
892 | * of whether the command errored or not, return a sense | |
893 | * block. Copy all controller registers into the sense | |
84a9a8cd GG |
894 | * block. If there was no error, we get the request from an ATA |
895 | * passthrough command, so we use the following sense data: | |
896 | * sk = RECOVERED ERROR | |
897 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE | |
898 | * | |
b095518e JG |
899 | * |
900 | * LOCKING: | |
750426aa | 901 | * None. |
b095518e | 902 | */ |
750426aa | 903 | static void ata_gen_passthru_sense(struct ata_queued_cmd *qc) |
b095518e JG |
904 | { |
905 | struct scsi_cmnd *cmd = qc->scsicmd; | |
e61e0672 | 906 | struct ata_taskfile *tf = &qc->result_tf; |
b095518e JG |
907 | unsigned char *sb = cmd->sense_buffer; |
908 | unsigned char *desc = sb + 8; | |
246619da | 909 | int verbose = qc->ap->ops->error_handler == NULL; |
b525e773 | 910 | u8 sense_key, asc, ascq; |
b095518e JG |
911 | |
912 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); | |
913 | ||
b095518e JG |
914 | /* |
915 | * Use ata_to_sense_error() to map status register bits | |
916 | * onto sense key, asc & ascq. | |
917 | */ | |
058e55e1 | 918 | if (qc->err_mask || |
efcef265 SS |
919 | tf->status & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
920 | ata_to_sense_error(qc->ap->print_id, tf->status, tf->error, | |
b525e773 | 921 | &sense_key, &asc, &ascq, verbose); |
06dbde5f | 922 | ata_scsi_set_sense(qc->dev, cmd, sense_key, asc, ascq); |
84a9a8cd | 923 | } else { |
11093cb1 HR |
924 | /* |
925 | * ATA PASS-THROUGH INFORMATION AVAILABLE | |
926 | * Always in descriptor format sense. | |
927 | */ | |
f2b1e9c6 | 928 | scsi_build_sense(cmd, 1, RECOVERED_ERROR, 0, 0x1D); |
1da177e4 LT |
929 | } |
930 | ||
11093cb1 HR |
931 | if ((cmd->sense_buffer[0] & 0x7f) >= 0x72) { |
932 | u8 len; | |
933 | ||
934 | /* descriptor format */ | |
935 | len = sb[7]; | |
936 | desc = (char *)scsi_sense_desc_find(sb, len + 8, 9); | |
937 | if (!desc) { | |
938 | if (SCSI_SENSE_BUFFERSIZE < len + 14) | |
939 | return; | |
940 | sb[7] = len + 14; | |
941 | desc = sb + 8 + len; | |
942 | } | |
943 | desc[0] = 9; | |
944 | desc[1] = 12; | |
945 | /* | |
946 | * Copy registers into sense buffer. | |
947 | */ | |
948 | desc[2] = 0x00; | |
efcef265 | 949 | desc[3] = tf->error; |
11093cb1 HR |
950 | desc[5] = tf->nsect; |
951 | desc[7] = tf->lbal; | |
952 | desc[9] = tf->lbam; | |
953 | desc[11] = tf->lbah; | |
954 | desc[12] = tf->device; | |
efcef265 | 955 | desc[13] = tf->status; |
b095518e | 956 | |
11093cb1 HR |
957 | /* |
958 | * Fill in Extend bit, and the high order bytes | |
959 | * if applicable. | |
960 | */ | |
961 | if (tf->flags & ATA_TFLAG_LBA48) { | |
962 | desc[2] |= 0x01; | |
963 | desc[4] = tf->hob_nsect; | |
964 | desc[6] = tf->hob_lbal; | |
965 | desc[8] = tf->hob_lbam; | |
966 | desc[10] = tf->hob_lbah; | |
967 | } | |
968 | } else { | |
969 | /* Fixed sense format */ | |
efcef265 SS |
970 | desc[0] = tf->error; |
971 | desc[1] = tf->status; | |
11093cb1 HR |
972 | desc[2] = tf->device; |
973 | desc[3] = tf->nsect; | |
e0029dcb | 974 | desc[7] = 0; |
11093cb1 HR |
975 | if (tf->flags & ATA_TFLAG_LBA48) { |
976 | desc[8] |= 0x80; | |
977 | if (tf->hob_nsect) | |
978 | desc[8] |= 0x40; | |
979 | if (tf->hob_lbal || tf->hob_lbam || tf->hob_lbah) | |
980 | desc[8] |= 0x20; | |
981 | } | |
982 | desc[9] = tf->lbal; | |
983 | desc[10] = tf->lbam; | |
984 | desc[11] = tf->lbah; | |
1da177e4 | 985 | } |
b095518e | 986 | } |
1da177e4 | 987 | |
b095518e | 988 | /** |
750426aa | 989 | * ata_gen_ata_sense - generate a SCSI fixed sense block |
b095518e JG |
990 | * @qc: Command that we are erroring out |
991 | * | |
d25614ba | 992 | * Generate sense block for a failed ATA command @qc. Descriptor |
25985edc | 993 | * format is used to accommodate LBA48 block address. |
b095518e JG |
994 | * |
995 | * LOCKING: | |
750426aa | 996 | * None. |
b095518e | 997 | */ |
750426aa | 998 | static void ata_gen_ata_sense(struct ata_queued_cmd *qc) |
b095518e | 999 | { |
d25614ba | 1000 | struct ata_device *dev = qc->dev; |
b095518e | 1001 | struct scsi_cmnd *cmd = qc->scsicmd; |
e61e0672 | 1002 | struct ata_taskfile *tf = &qc->result_tf; |
b095518e | 1003 | unsigned char *sb = cmd->sense_buffer; |
246619da | 1004 | int verbose = qc->ap->ops->error_handler == NULL; |
d25614ba | 1005 | u64 block; |
b525e773 | 1006 | u8 sense_key, asc, ascq; |
b095518e JG |
1007 | |
1008 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); | |
1009 | ||
59f68474 HR |
1010 | if (ata_dev_disabled(dev)) { |
1011 | /* Device disabled after error recovery */ | |
1012 | /* LOGICAL UNIT NOT READY, HARD RESET REQUIRED */ | |
1013 | ata_scsi_set_sense(dev, cmd, NOT_READY, 0x04, 0x21); | |
1014 | return; | |
1015 | } | |
d25614ba | 1016 | /* Use ata_to_sense_error() to map status register bits |
b095518e JG |
1017 | * onto sense key, asc & ascq. |
1018 | */ | |
058e55e1 | 1019 | if (qc->err_mask || |
efcef265 SS |
1020 | tf->status & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { |
1021 | ata_to_sense_error(qc->ap->print_id, tf->status, tf->error, | |
b525e773 | 1022 | &sense_key, &asc, &ascq, verbose); |
06dbde5f | 1023 | ata_scsi_set_sense(dev, cmd, sense_key, asc, ascq); |
5e6acd1c HR |
1024 | } else { |
1025 | /* Could not decode error */ | |
1026 | ata_dev_warn(dev, "could not decode error status 0x%x err_mask 0x%x\n", | |
efcef265 | 1027 | tf->status, qc->err_mask); |
06dbde5f | 1028 | ata_scsi_set_sense(dev, cmd, ABORTED_COMMAND, 0, 0); |
5e6acd1c | 1029 | return; |
1da177e4 | 1030 | } |
1da177e4 | 1031 | |
d25614ba | 1032 | block = ata_tf_read_block(&qc->result_tf, dev); |
cffd1ee9 HR |
1033 | if (block == U64_MAX) |
1034 | return; | |
a7dac447 | 1035 | |
cf8b49b0 | 1036 | scsi_set_sense_information(sb, SCSI_SENSE_BUFFERSIZE, block); |
1da177e4 LT |
1037 | } |
1038 | ||
15964ff7 | 1039 | void ata_scsi_sdev_config(struct scsi_device *sdev) |
a6cce2a7 BK |
1040 | { |
1041 | sdev->use_10_for_rw = 1; | |
1042 | sdev->use_10_for_ms = 1; | |
e185934f | 1043 | sdev->no_write_same = 1; |
31cc23b3 TH |
1044 | |
1045 | /* Schedule policy is determined by ->qc_defer() callback and | |
1046 | * it needs to see every deferred qc. Set dev_blocked to 1 to | |
1047 | * prevent SCSI midlayer from automatically deferring | |
1048 | * requests. | |
1049 | */ | |
1050 | sdev->max_device_blocked = 1; | |
a6cce2a7 BK |
1051 | } |
1052 | ||
fa2fc7f4 | 1053 | /** |
94bd5719 | 1054 | * ata_scsi_dma_need_drain - Check whether data transfer may overflow |
73fd8b6d | 1055 | * @rq: request to be checked |
fa2fc7f4 JB |
1056 | * |
1057 | * ATAPI commands which transfer variable length data to host | |
c9b5560a | 1058 | * might overflow due to application error or hardware bug. This |
fa2fc7f4 JB |
1059 | * function checks whether overflow should be drained and ignored |
1060 | * for @request. | |
1061 | * | |
1062 | * LOCKING: | |
1063 | * None. | |
1064 | * | |
1065 | * RETURNS: | |
1066 | * 1 if ; otherwise, 0. | |
1067 | */ | |
cc97923a | 1068 | bool ata_scsi_dma_need_drain(struct request *rq) |
fa2fc7f4 | 1069 | { |
ce70fd9a CH |
1070 | struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq); |
1071 | ||
1072 | return atapi_cmd_type(scmd->cmnd[0]) == ATAPI_MISC; | |
fa2fc7f4 | 1073 | } |
cc97923a | 1074 | EXPORT_SYMBOL_GPL(ata_scsi_dma_need_drain); |
fa2fc7f4 | 1075 | |
15964ff7 | 1076 | int ata_scsi_dev_config(struct scsi_device *sdev, struct ata_device *dev) |
a6cce2a7 | 1077 | { |
900e599e | 1078 | struct request_queue *q = sdev->request_queue; |
6a8438de | 1079 | int depth = 1; |
900e599e | 1080 | |
45fabbb7 EO |
1081 | if (!ata_id_has_unload(dev->id)) |
1082 | dev->flags |= ATA_DFLAG_NO_UNLOAD; | |
1083 | ||
914ed354 | 1084 | /* configure max sectors */ |
0568e612 | 1085 | dev->max_sectors = min(dev->max_sectors, sdev->host->max_sectors); |
900e599e | 1086 | blk_queue_max_hw_sectors(q, dev->max_sectors); |
a6cce2a7 | 1087 | |
fa2fc7f4 | 1088 | if (dev->class == ATA_DEV_ATAPI) { |
729a6a30 TH |
1089 | sdev->sector_size = ATA_SECT_SIZE; |
1090 | ||
1091 | /* set DMA padding */ | |
900e599e | 1092 | blk_queue_update_dma_pad(q, ATA_DMA_PAD_SZ - 1); |
fa2fc7f4 | 1093 | |
cc97923a CH |
1094 | /* make room for appending the drain */ |
1095 | blk_queue_max_segments(q, queue_max_segments(q) - 1); | |
1096 | ||
1097 | sdev->dma_drain_len = ATAPI_MAX_DRAIN; | |
ce288e05 | 1098 | sdev->dma_drain_buf = kmalloc(sdev->dma_drain_len, GFP_NOIO); |
cc97923a | 1099 | if (!sdev->dma_drain_buf) { |
a9a79dfe | 1100 | ata_dev_err(dev, "drain buffer allocation failed\n"); |
fa2fc7f4 JB |
1101 | return -ENOMEM; |
1102 | } | |
fa2fc7f4 | 1103 | } else { |
295124dc | 1104 | sdev->sector_size = ata_id_logical_sector_size(dev->id); |
d8cf5389 | 1105 | sdev->manage_start_stop = 1; |
dde20207 | 1106 | } |
d8cf5389 | 1107 | |
729a6a30 TH |
1108 | /* |
1109 | * ata_pio_sectors() expects buffer for each sector to not cross | |
1110 | * page boundary. Enforce it by requiring buffers to be sector | |
1111 | * aligned, which works iff sector_size is not larger than | |
1112 | * PAGE_SIZE. ATAPI devices also need the alignment as | |
1113 | * IDENTIFY_PACKET is executed as ATA_PROT_PIO. | |
1114 | */ | |
1115 | if (sdev->sector_size > PAGE_SIZE) | |
a9a79dfe | 1116 | ata_dev_warn(dev, |
729a6a30 TH |
1117 | "sector_size=%u > PAGE_SIZE, PIO may malfunction\n", |
1118 | sdev->sector_size); | |
1119 | ||
900e599e | 1120 | blk_queue_update_dma_alignment(q, sdev->sector_size - 1); |
729a6a30 | 1121 | |
f26792d5 JG |
1122 | if (dev->flags & ATA_DFLAG_AN) |
1123 | set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events); | |
1124 | ||
6a8438de | 1125 | if (dev->flags & ATA_DFLAG_NCQ) |
a6e6ce8e | 1126 | depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id)); |
6a8438de DLM |
1127 | depth = min(ATA_MAX_QUEUE, depth); |
1128 | scsi_change_queue_depth(sdev, depth); | |
fa2fc7f4 | 1129 | |
d80210f2 CH |
1130 | if (dev->flags & ATA_DFLAG_TRUSTED) |
1131 | sdev->security_supported = 1; | |
1132 | ||
295124dc | 1133 | dev->sdev = sdev; |
fa2fc7f4 | 1134 | return 0; |
a6cce2a7 BK |
1135 | } |
1136 | ||
1da177e4 LT |
1137 | /** |
1138 | * ata_scsi_slave_config - Set SCSI device attributes | |
1139 | * @sdev: SCSI device to examine | |
1140 | * | |
1141 | * This is called before we actually start reading | |
1142 | * and writing to the device, to configure certain | |
1143 | * SCSI mid-layer behaviors. | |
1144 | * | |
1145 | * LOCKING: | |
1146 | * Defined by SCSI layer. We don't really care. | |
1147 | */ | |
1148 | ||
1149 | int ata_scsi_slave_config(struct scsi_device *sdev) | |
1150 | { | |
31534363 TH |
1151 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
1152 | struct ata_device *dev = __ata_scsi_find_dev(ap, sdev); | |
fa2fc7f4 | 1153 | int rc = 0; |
31534363 | 1154 | |
a6cce2a7 | 1155 | ata_scsi_sdev_config(sdev); |
1da177e4 | 1156 | |
31534363 | 1157 | if (dev) |
fa2fc7f4 | 1158 | rc = ata_scsi_dev_config(sdev, dev); |
1da177e4 | 1159 | |
fa2fc7f4 | 1160 | return rc; |
1da177e4 | 1161 | } |
a52fbcfc | 1162 | EXPORT_SYMBOL_GPL(ata_scsi_slave_config); |
1da177e4 | 1163 | |
83c47bcb TH |
1164 | /** |
1165 | * ata_scsi_slave_destroy - SCSI device is about to be destroyed | |
1166 | * @sdev: SCSI device to be destroyed | |
1167 | * | |
1168 | * @sdev is about to be destroyed for hot/warm unplugging. If | |
1169 | * this unplugging was initiated by libata as indicated by NULL | |
1170 | * dev->sdev, this function doesn't have to do anything. | |
1171 | * Otherwise, SCSI layer initiated warm-unplug is in progress. | |
1172 | * Clear dev->sdev, schedule the device for ATA detach and invoke | |
1173 | * EH. | |
1174 | * | |
1175 | * LOCKING: | |
1176 | * Defined by SCSI layer. We don't really care. | |
1177 | */ | |
1178 | void ata_scsi_slave_destroy(struct scsi_device *sdev) | |
1179 | { | |
1180 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
1181 | unsigned long flags; | |
1182 | struct ata_device *dev; | |
1183 | ||
1184 | if (!ap->ops->error_handler) | |
1185 | return; | |
1186 | ||
ba6a1308 | 1187 | spin_lock_irqsave(ap->lock, flags); |
83c47bcb TH |
1188 | dev = __ata_scsi_find_dev(ap, sdev); |
1189 | if (dev && dev->sdev) { | |
1190 | /* SCSI device already in CANCEL state, no need to offline it */ | |
1191 | dev->sdev = NULL; | |
1192 | dev->flags |= ATA_DFLAG_DETACH; | |
1193 | ata_port_schedule_eh(ap); | |
1194 | } | |
ba6a1308 | 1195 | spin_unlock_irqrestore(ap->lock, flags); |
fa2fc7f4 | 1196 | |
cc97923a | 1197 | kfree(sdev->dma_drain_buf); |
83c47bcb | 1198 | } |
a52fbcfc | 1199 | EXPORT_SYMBOL_GPL(ata_scsi_slave_destroy); |
83c47bcb | 1200 | |
972dcafb DG |
1201 | /** |
1202 | * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command | |
1203 | * @qc: Storage for translated ATA taskfile | |
972dcafb DG |
1204 | * |
1205 | * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY | |
1206 | * (to start). Perhaps these commands should be preceded by | |
1207 | * CHECK POWER MODE to see what power mode the device is already in. | |
1208 | * [See SAT revision 5 at www.t10.org] | |
1209 | * | |
1210 | * LOCKING: | |
cca3974e | 1211 | * spin_lock_irqsave(host lock) |
972dcafb DG |
1212 | * |
1213 | * RETURNS: | |
1214 | * Zero on success, non-zero on error. | |
1215 | */ | |
ad706991 | 1216 | static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc) |
972dcafb | 1217 | { |
542b1444 | 1218 | struct scsi_cmnd *scmd = qc->scsicmd; |
972dcafb | 1219 | struct ata_taskfile *tf = &qc->tf; |
ad706991 | 1220 | const u8 *cdb = scmd->cmnd; |
bcfc867d | 1221 | u16 fp; |
0df10b84 | 1222 | u8 bp = 0xff; |
972dcafb | 1223 | |
bcfc867d HR |
1224 | if (scmd->cmd_len < 5) { |
1225 | fp = 4; | |
2e5704f6 | 1226 | goto invalid_fld; |
bcfc867d | 1227 | } |
2e5704f6 | 1228 | |
972dcafb DG |
1229 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
1230 | tf->protocol = ATA_PROT_NODATA; | |
542b1444 | 1231 | if (cdb[1] & 0x1) { |
972dcafb DG |
1232 | ; /* ignore IMMED bit, violates sat-r05 */ |
1233 | } | |
bcfc867d HR |
1234 | if (cdb[4] & 0x2) { |
1235 | fp = 4; | |
0df10b84 | 1236 | bp = 1; |
ae006510 | 1237 | goto invalid_fld; /* LOEJ bit set not supported */ |
bcfc867d HR |
1238 | } |
1239 | if (((cdb[4] >> 4) & 0xf) != 0) { | |
1240 | fp = 4; | |
0df10b84 | 1241 | bp = 3; |
ae006510 | 1242 | goto invalid_fld; /* power conditions not supported */ |
bcfc867d | 1243 | } |
e31e8531 | 1244 | |
542b1444 | 1245 | if (cdb[4] & 0x1) { |
972dcafb | 1246 | tf->nsect = 1; /* 1 sector, lba=0 */ |
9d5b1302 AL |
1247 | |
1248 | if (qc->dev->flags & ATA_DFLAG_LBA) { | |
c44078c0 | 1249 | tf->flags |= ATA_TFLAG_LBA; |
9d5b1302 AL |
1250 | |
1251 | tf->lbah = 0x0; | |
1252 | tf->lbam = 0x0; | |
1253 | tf->lbal = 0x0; | |
1254 | tf->device |= ATA_LBA; | |
1255 | } else { | |
1256 | /* CHS */ | |
1257 | tf->lbal = 0x1; /* sect */ | |
1258 | tf->lbam = 0x0; /* cyl low */ | |
1259 | tf->lbah = 0x0; /* cyl high */ | |
1260 | } | |
1261 | ||
972dcafb | 1262 | tf->command = ATA_CMD_VERIFY; /* READ VERIFY */ |
920a4b10 | 1263 | } else { |
2a6e58d2 RW |
1264 | /* Some odd clown BIOSen issue spindown on power off (ACPI S4 |
1265 | * or S5) causing some drives to spin up and down again. | |
1266 | */ | |
1267 | if ((qc->ap->flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) && | |
1268 | system_state == SYSTEM_POWER_OFF) | |
1269 | goto skip; | |
1270 | ||
1271 | if ((qc->ap->flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) && | |
1272 | system_entering_hibernation()) | |
1273 | goto skip; | |
1274 | ||
78981a7c RH |
1275 | /* Issue ATA STANDBY IMMEDIATE command */ |
1276 | tf->command = ATA_CMD_STANDBYNOW1; | |
920a4b10 | 1277 | } |
78981a7c | 1278 | |
972dcafb DG |
1279 | /* |
1280 | * Standby and Idle condition timers could be implemented but that | |
1281 | * would require libata to implement the Power condition mode page | |
1282 | * and allow the user to change it. Changing mode pages requires | |
1283 | * MODE SELECT to be implemented. | |
1284 | */ | |
1285 | ||
1286 | return 0; | |
ae006510 | 1287 | |
2a6e58d2 | 1288 | invalid_fld: |
0df10b84 | 1289 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); |
ae006510 | 1290 | return 1; |
2a6e58d2 RW |
1291 | skip: |
1292 | scmd->result = SAM_STAT_GOOD; | |
1293 | return 1; | |
972dcafb DG |
1294 | } |
1295 | ||
1296 | ||
1da177e4 LT |
1297 | /** |
1298 | * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command | |
1299 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1300 | * |
1301 | * Sets up an ATA taskfile to issue FLUSH CACHE or | |
1302 | * FLUSH CACHE EXT. | |
1303 | * | |
1304 | * LOCKING: | |
cca3974e | 1305 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1306 | * |
1307 | * RETURNS: | |
1308 | * Zero on success, non-zero on error. | |
1309 | */ | |
ad706991 | 1310 | static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc) |
1da177e4 LT |
1311 | { |
1312 | struct ata_taskfile *tf = &qc->tf; | |
1313 | ||
1314 | tf->flags |= ATA_TFLAG_DEVICE; | |
1315 | tf->protocol = ATA_PROT_NODATA; | |
1316 | ||
6fc49adb | 1317 | if (qc->dev->flags & ATA_DFLAG_FLUSH_EXT) |
1da177e4 LT |
1318 | tf->command = ATA_CMD_FLUSH_EXT; |
1319 | else | |
1320 | tf->command = ATA_CMD_FLUSH; | |
1321 | ||
b666da35 TH |
1322 | /* flush is critical for IO integrity, consider it an IO command */ |
1323 | qc->flags |= ATA_QCFLAG_IO; | |
1324 | ||
1da177e4 LT |
1325 | return 0; |
1326 | } | |
1327 | ||
3aef5231 AL |
1328 | /** |
1329 | * scsi_6_lba_len - Get LBA and transfer length | |
542b1444 | 1330 | * @cdb: SCSI command to translate |
3aef5231 AL |
1331 | * |
1332 | * Calculate LBA and transfer length for 6-byte commands. | |
1333 | * | |
1334 | * RETURNS: | |
1335 | * @plba: the LBA | |
1336 | * @plen: the transfer length | |
1337 | */ | |
542b1444 | 1338 | static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 AL |
1339 | { |
1340 | u64 lba = 0; | |
6c7b7d2b | 1341 | u32 len; |
3aef5231 | 1342 | |
6c7b7d2b | 1343 | lba |= ((u64)(cdb[1] & 0x1f)) << 16; |
542b1444 TH |
1344 | lba |= ((u64)cdb[2]) << 8; |
1345 | lba |= ((u64)cdb[3]); | |
3aef5231 | 1346 | |
6c7b7d2b | 1347 | len = cdb[4]; |
3aef5231 AL |
1348 | |
1349 | *plba = lba; | |
1350 | *plen = len; | |
1351 | } | |
1352 | ||
1353 | /** | |
1354 | * scsi_10_lba_len - Get LBA and transfer length | |
542b1444 | 1355 | * @cdb: SCSI command to translate |
3aef5231 AL |
1356 | * |
1357 | * Calculate LBA and transfer length for 10-byte commands. | |
1358 | * | |
1359 | * RETURNS: | |
1360 | * @plba: the LBA | |
1361 | * @plen: the transfer length | |
1362 | */ | |
6e163f9b | 1363 | static inline void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 | 1364 | { |
6e163f9b DLM |
1365 | *plba = get_unaligned_be32(&cdb[2]); |
1366 | *plen = get_unaligned_be16(&cdb[7]); | |
3aef5231 AL |
1367 | } |
1368 | ||
1369 | /** | |
1370 | * scsi_16_lba_len - Get LBA and transfer length | |
542b1444 | 1371 | * @cdb: SCSI command to translate |
3aef5231 AL |
1372 | * |
1373 | * Calculate LBA and transfer length for 16-byte commands. | |
1374 | * | |
1375 | * RETURNS: | |
1376 | * @plba: the LBA | |
1377 | * @plen: the transfer length | |
1378 | */ | |
6e163f9b | 1379 | static inline void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 | 1380 | { |
6e163f9b DLM |
1381 | *plba = get_unaligned_be64(&cdb[2]); |
1382 | *plen = get_unaligned_be32(&cdb[10]); | |
3aef5231 AL |
1383 | } |
1384 | ||
1da177e4 LT |
1385 | /** |
1386 | * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one | |
1387 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1388 | * |
1389 | * Converts SCSI VERIFY command to an ATA READ VERIFY command. | |
1390 | * | |
1391 | * LOCKING: | |
cca3974e | 1392 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1393 | * |
1394 | * RETURNS: | |
1395 | * Zero on success, non-zero on error. | |
1396 | */ | |
ad706991 | 1397 | static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 1398 | { |
542b1444 | 1399 | struct scsi_cmnd *scmd = qc->scsicmd; |
1da177e4 | 1400 | struct ata_taskfile *tf = &qc->tf; |
8bf62ece | 1401 | struct ata_device *dev = qc->dev; |
1da177e4 | 1402 | u64 dev_sectors = qc->dev->n_sectors; |
ad706991 | 1403 | const u8 *cdb = scmd->cmnd; |
3aef5231 AL |
1404 | u64 block; |
1405 | u32 n_block; | |
bcfc867d | 1406 | u16 fp; |
1da177e4 LT |
1407 | |
1408 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
1409 | tf->protocol = ATA_PROT_NODATA; | |
1da177e4 | 1410 | |
59b00404 SS |
1411 | switch (cdb[0]) { |
1412 | case VERIFY: | |
bcfc867d HR |
1413 | if (scmd->cmd_len < 10) { |
1414 | fp = 9; | |
2e5704f6 | 1415 | goto invalid_fld; |
bcfc867d | 1416 | } |
542b1444 | 1417 | scsi_10_lba_len(cdb, &block, &n_block); |
59b00404 SS |
1418 | break; |
1419 | case VERIFY_16: | |
bcfc867d HR |
1420 | if (scmd->cmd_len < 16) { |
1421 | fp = 15; | |
2e5704f6 | 1422 | goto invalid_fld; |
bcfc867d | 1423 | } |
542b1444 | 1424 | scsi_16_lba_len(cdb, &block, &n_block); |
59b00404 SS |
1425 | break; |
1426 | default: | |
bcfc867d | 1427 | fp = 0; |
ae006510 | 1428 | goto invalid_fld; |
bcfc867d | 1429 | } |
1da177e4 | 1430 | |
8bf62ece | 1431 | if (!n_block) |
ae006510 | 1432 | goto nothing_to_do; |
8bf62ece | 1433 | if (block >= dev_sectors) |
ae006510 | 1434 | goto out_of_range; |
8bf62ece | 1435 | if ((block + n_block) > dev_sectors) |
ae006510 | 1436 | goto out_of_range; |
1da177e4 | 1437 | |
07506697 AL |
1438 | if (dev->flags & ATA_DFLAG_LBA) { |
1439 | tf->flags |= ATA_TFLAG_LBA; | |
1440 | ||
c6a33e24 AL |
1441 | if (lba_28_ok(block, n_block)) { |
1442 | /* use LBA28 */ | |
1443 | tf->command = ATA_CMD_VERIFY; | |
1444 | tf->device |= (block >> 24) & 0xf; | |
1445 | } else if (lba_48_ok(block, n_block)) { | |
1446 | if (!(dev->flags & ATA_DFLAG_LBA48)) | |
1447 | goto out_of_range; | |
07506697 AL |
1448 | |
1449 | /* use LBA48 */ | |
1450 | tf->flags |= ATA_TFLAG_LBA48; | |
8bf62ece | 1451 | tf->command = ATA_CMD_VERIFY_EXT; |
1da177e4 | 1452 | |
8bf62ece | 1453 | tf->hob_nsect = (n_block >> 8) & 0xff; |
1da177e4 | 1454 | |
8bf62ece AL |
1455 | tf->hob_lbah = (block >> 40) & 0xff; |
1456 | tf->hob_lbam = (block >> 32) & 0xff; | |
1457 | tf->hob_lbal = (block >> 24) & 0xff; | |
c6a33e24 AL |
1458 | } else |
1459 | /* request too large even for LBA48 */ | |
1460 | goto out_of_range; | |
8bf62ece AL |
1461 | |
1462 | tf->nsect = n_block & 0xff; | |
1da177e4 | 1463 | |
8bf62ece AL |
1464 | tf->lbah = (block >> 16) & 0xff; |
1465 | tf->lbam = (block >> 8) & 0xff; | |
1466 | tf->lbal = block & 0xff; | |
1da177e4 | 1467 | |
8bf62ece AL |
1468 | tf->device |= ATA_LBA; |
1469 | } else { | |
1470 | /* CHS */ | |
1471 | u32 sect, head, cyl, track; | |
1472 | ||
c6a33e24 AL |
1473 | if (!lba_28_ok(block, n_block)) |
1474 | goto out_of_range; | |
07506697 | 1475 | |
8bf62ece AL |
1476 | /* Convert LBA to CHS */ |
1477 | track = (u32)block / dev->sectors; | |
1478 | cyl = track / dev->heads; | |
1479 | head = track % dev->heads; | |
1480 | sect = (u32)block % dev->sectors + 1; | |
1481 | ||
2e9edbf8 JG |
1482 | /* Check whether the converted CHS can fit. |
1483 | Cylinder: 0-65535 | |
8bf62ece AL |
1484 | Head: 0-15 |
1485 | Sector: 1-255*/ | |
2e9edbf8 | 1486 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
ae006510 | 1487 | goto out_of_range; |
2e9edbf8 | 1488 | |
8bf62ece AL |
1489 | tf->command = ATA_CMD_VERIFY; |
1490 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ | |
1491 | tf->lbal = sect; | |
1492 | tf->lbam = cyl; | |
1493 | tf->lbah = cyl >> 8; | |
1494 | tf->device |= head; | |
1495 | } | |
1da177e4 LT |
1496 | |
1497 | return 0; | |
ae006510 DG |
1498 | |
1499 | invalid_fld: | |
0df10b84 | 1500 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
ae006510 DG |
1501 | return 1; |
1502 | ||
1503 | out_of_range: | |
06dbde5f | 1504 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
ae006510 DG |
1505 | /* "Logical Block Address out of range" */ |
1506 | return 1; | |
1507 | ||
1508 | nothing_to_do: | |
542b1444 | 1509 | scmd->result = SAM_STAT_GOOD; |
ae006510 | 1510 | return 1; |
1da177e4 LT |
1511 | } |
1512 | ||
2d727150 JA |
1513 | static bool ata_check_nblocks(struct scsi_cmnd *scmd, u32 n_blocks) |
1514 | { | |
c8329cd5 | 1515 | struct request *rq = scsi_cmd_to_rq(scmd); |
2d727150 JA |
1516 | u32 req_blocks; |
1517 | ||
1518 | if (!blk_rq_is_passthrough(rq)) | |
1519 | return true; | |
1520 | ||
1521 | req_blocks = blk_rq_bytes(rq) / scmd->device->sector_size; | |
1522 | if (n_blocks > req_blocks) | |
1523 | return false; | |
1524 | ||
1525 | return true; | |
1526 | } | |
1527 | ||
1da177e4 LT |
1528 | /** |
1529 | * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one | |
1530 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1531 | * |
1532 | * Converts any of six SCSI read/write commands into the | |
1533 | * ATA counterpart, including starting sector (LBA), | |
1534 | * sector count, and taking into account the device's LBA48 | |
1535 | * support. | |
1536 | * | |
1537 | * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and | |
1538 | * %WRITE_16 are currently supported. | |
1539 | * | |
1540 | * LOCKING: | |
cca3974e | 1541 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1542 | * |
1543 | * RETURNS: | |
1544 | * Zero on success, non-zero on error. | |
1545 | */ | |
ad706991 | 1546 | static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 1547 | { |
542b1444 | 1548 | struct scsi_cmnd *scmd = qc->scsicmd; |
ad706991 | 1549 | const u8 *cdb = scmd->cmnd; |
c8329cd5 | 1550 | struct request *rq = scsi_cmd_to_rq(scmd); |
8e061784 | 1551 | int class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq)); |
bd056d7e | 1552 | unsigned int tf_flags = 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); |
3e451a49 | 1603 | if (cdb[1] & (1 << 3)) |
bd056d7e | 1604 | tf_flags |= ATA_TFLAG_FUA; |
2d727150 JA |
1605 | if (!ata_check_nblocks(scmd, n_block)) |
1606 | goto invalid_fld; | |
3aef5231 AL |
1607 | break; |
1608 | default: | |
bcfc867d | 1609 | fp = 0; |
ae006510 | 1610 | goto invalid_fld; |
1da177e4 LT |
1611 | } |
1612 | ||
8bf62ece AL |
1613 | /* Check and compose ATA command */ |
1614 | if (!n_block) | |
c187c4b5 AL |
1615 | /* For 10-byte and 16-byte SCSI R/W commands, transfer |
1616 | * length 0 means transfer 0 block of data. | |
1617 | * However, for ATA R/W commands, sector count 0 means | |
1618 | * 256 or 65536 sectors, not 0 sectors as in SCSI. | |
f51750d5 AC |
1619 | * |
1620 | * WARNING: one or two older ATA drives treat 0 as 0... | |
c187c4b5 | 1621 | */ |
ae006510 | 1622 | goto nothing_to_do; |
1da177e4 | 1623 | |
bd056d7e | 1624 | qc->flags |= ATA_QCFLAG_IO; |
295124dc | 1625 | qc->nbytes = n_block * scmd->device->sector_size; |
1da177e4 | 1626 | |
066de3b9 | 1627 | rc = ata_build_rw_tf(qc, block, n_block, tf_flags, class); |
bd056d7e TH |
1628 | if (likely(rc == 0)) |
1629 | return 0; | |
ae006510 | 1630 | |
bd056d7e TH |
1631 | if (rc == -ERANGE) |
1632 | goto out_of_range; | |
1633 | /* treat all other errors as -EINVAL, fall through */ | |
ae006510 | 1634 | invalid_fld: |
0df10b84 | 1635 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
ae006510 DG |
1636 | return 1; |
1637 | ||
1638 | out_of_range: | |
06dbde5f | 1639 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
ae006510 DG |
1640 | /* "Logical Block Address out of range" */ |
1641 | return 1; | |
1642 | ||
1643 | nothing_to_do: | |
542b1444 | 1644 | scmd->result = SAM_STAT_GOOD; |
ae006510 | 1645 | return 1; |
1da177e4 LT |
1646 | } |
1647 | ||
2aa8f5d6 CH |
1648 | static void ata_qc_done(struct ata_queued_cmd *qc) |
1649 | { | |
1650 | struct scsi_cmnd *cmd = qc->scsicmd; | |
1651 | void (*done)(struct scsi_cmnd *) = qc->scsidone; | |
1652 | ||
1653 | ata_qc_free(qc); | |
1654 | done(cmd); | |
1655 | } | |
1656 | ||
77853bf2 | 1657 | static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) |
1da177e4 | 1658 | { |
c31f571d | 1659 | struct ata_port *ap = qc->ap; |
1da177e4 | 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 | |
c31f571d | 1683 | if (need_sense && !ap->ops->error_handler) |
41d4c60f | 1684 | ata_dump_status(ap, &qc->result_tf); |
1da177e4 | 1685 | |
2aa8f5d6 | 1686 | ata_qc_done(qc); |
1da177e4 LT |
1687 | } |
1688 | ||
1689 | /** | |
1690 | * ata_scsi_translate - Translate then issue SCSI command to ATA device | |
1da177e4 LT |
1691 | * @dev: ATA device to which the command is addressed |
1692 | * @cmd: SCSI command to execute | |
1da177e4 LT |
1693 | * @xlat_func: Actor which translates @cmd to an ATA taskfile |
1694 | * | |
1695 | * Our ->queuecommand() function has decided that the SCSI | |
1696 | * command issued can be directly translated into an ATA | |
1697 | * command, rather than handled internally. | |
1698 | * | |
1699 | * This function sets up an ata_queued_cmd structure for the | |
1700 | * SCSI command, and sends that ata_queued_cmd to the hardware. | |
1701 | * | |
ae006510 DG |
1702 | * The xlat_func argument (actor) returns 0 if ready to execute |
1703 | * ATA command, else 1 to finish translation. If 1 is returned | |
1704 | * then cmd->result (and possibly cmd->sense_buffer) are assumed | |
1705 | * to be set reflecting an error condition or clean (early) | |
1706 | * termination. | |
1707 | * | |
1da177e4 | 1708 | * LOCKING: |
cca3974e | 1709 | * spin_lock_irqsave(host lock) |
2115ea94 TH |
1710 | * |
1711 | * RETURNS: | |
1712 | * 0 on success, SCSI_ML_QUEUE_DEVICE_BUSY if the command | |
1713 | * needs to be deferred. | |
1da177e4 | 1714 | */ |
2115ea94 | 1715 | static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd, |
2115ea94 | 1716 | ata_xlat_func_t xlat_func) |
1da177e4 | 1717 | { |
31cc23b3 | 1718 | struct ata_port *ap = dev->link->ap; |
1da177e4 | 1719 | struct ata_queued_cmd *qc; |
31cc23b3 | 1720 | int rc; |
1da177e4 | 1721 | |
b27dcfb0 | 1722 | qc = ata_scsi_qc_new(dev, cmd); |
1da177e4 | 1723 | if (!qc) |
ae006510 | 1724 | goto err_mem; |
1da177e4 LT |
1725 | |
1726 | /* data is present; dma-map it */ | |
be7db055 | 1727 | if (cmd->sc_data_direction == DMA_FROM_DEVICE || |
1728 | cmd->sc_data_direction == DMA_TO_DEVICE) { | |
7120165c | 1729 | if (unlikely(scsi_bufflen(cmd) < 1)) { |
a9a79dfe | 1730 | ata_dev_warn(dev, "WARNING: zero len r/w req\n"); |
ae006510 | 1731 | goto err_did; |
1da177e4 LT |
1732 | } |
1733 | ||
7120165c | 1734 | ata_sg_init(qc, scsi_sglist(cmd), scsi_sg_count(cmd)); |
1da177e4 LT |
1735 | |
1736 | qc->dma_dir = cmd->sc_data_direction; | |
1737 | } | |
1738 | ||
1739 | qc->complete_fn = ata_scsi_qc_complete; | |
1740 | ||
ad706991 | 1741 | if (xlat_func(qc)) |
ae006510 | 1742 | goto early_finish; |
1da177e4 | 1743 | |
31cc23b3 TH |
1744 | if (ap->ops->qc_defer) { |
1745 | if ((rc = ap->ops->qc_defer(qc))) | |
1746 | goto defer; | |
1747 | } | |
1748 | ||
1da177e4 | 1749 | /* select device, send command to hardware */ |
8e0e694a | 1750 | ata_qc_issue(qc); |
1da177e4 | 1751 | |
2115ea94 | 1752 | return 0; |
1da177e4 | 1753 | |
ae006510 | 1754 | early_finish: |
2dcb407e | 1755 | ata_qc_free(qc); |
58bf201d | 1756 | scsi_done(cmd); |
2115ea94 | 1757 | return 0; |
ae006510 DG |
1758 | |
1759 | err_did: | |
1da177e4 | 1760 | ata_qc_free(qc); |
ae006510 | 1761 | cmd->result = (DID_ERROR << 16); |
58bf201d | 1762 | scsi_done(cmd); |
253b92ec | 1763 | err_mem: |
2115ea94 | 1764 | return 0; |
3dc1d881 TH |
1765 | |
1766 | defer: | |
31cc23b3 | 1767 | ata_qc_free(qc); |
31cc23b3 TH |
1768 | if (rc == ATA_DEFER_LINK) |
1769 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
1770 | else | |
1771 | return SCSI_MLQUEUE_HOST_BUSY; | |
1da177e4 LT |
1772 | } |
1773 | ||
f0a37d12 CH |
1774 | struct ata_scsi_args { |
1775 | struct ata_device *dev; | |
1776 | u16 *id; | |
1777 | struct scsi_cmnd *cmd; | |
f0a37d12 CH |
1778 | }; |
1779 | ||
1da177e4 LT |
1780 | /** |
1781 | * ata_scsi_rbuf_fill - wrapper for SCSI command simulators | |
1782 | * @args: device IDENTIFY data / SCSI command of interest. | |
1783 | * @actor: Callback hook for desired SCSI command simulator | |
1784 | * | |
1785 | * Takes care of the hard work of simulating a SCSI command... | |
1786 | * Mapping the response buffer, calling the command's handler, | |
1787 | * and handling the handler's return value. This return value | |
1788 | * indicates whether the handler wishes the SCSI command to be | |
ae006510 DG |
1789 | * completed successfully (0), or not (in which case cmd->result |
1790 | * and sense buffer are assumed to be set). | |
1da177e4 LT |
1791 | * |
1792 | * LOCKING: | |
cca3974e | 1793 | * spin_lock_irqsave(host lock) |
1da177e4 | 1794 | */ |
f0761be3 | 1795 | static void ata_scsi_rbuf_fill(struct ata_scsi_args *args, |
87340e98 | 1796 | unsigned int (*actor)(struct ata_scsi_args *args, u8 *rbuf)) |
1da177e4 | 1797 | { |
87340e98 | 1798 | unsigned int rc; |
1da177e4 | 1799 | struct scsi_cmnd *cmd = args->cmd; |
b445c568 JG |
1800 | unsigned long flags; |
1801 | ||
56b4f06c DLM |
1802 | spin_lock_irqsave(&ata_scsi_rbuf_lock, flags); |
1803 | ||
1804 | memset(ata_scsi_rbuf, 0, ATA_SCSI_RBUF_SIZE); | |
1805 | rc = actor(args, ata_scsi_rbuf); | |
1806 | if (rc == 0) | |
1807 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), | |
1808 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); | |
1809 | ||
1810 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, flags); | |
b445c568 | 1811 | |
ae006510 | 1812 | if (rc == 0) |
1da177e4 | 1813 | cmd->result = SAM_STAT_GOOD; |
1da177e4 LT |
1814 | } |
1815 | ||
1816 | /** | |
1817 | * ata_scsiop_inq_std - Simulate INQUIRY command | |
1818 | * @args: device IDENTIFY data / SCSI command of interest. | |
1819 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
1820 | * |
1821 | * Returns standard device identification data associated | |
b142eb65 | 1822 | * with non-VPD INQUIRY command output. |
1da177e4 LT |
1823 | * |
1824 | * LOCKING: | |
cca3974e | 1825 | * spin_lock_irqsave(host lock) |
1da177e4 | 1826 | */ |
87340e98 | 1827 | static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 1828 | { |
e94f7914 | 1829 | static const u8 versions[] = { |
f9ca5ab8 | 1830 | 0x00, |
87340e98 TH |
1831 | 0x60, /* SAM-3 (no version claimed) */ |
1832 | ||
1833 | 0x03, | |
1834 | 0x20, /* SBC-2 (no version claimed) */ | |
1835 | ||
29a37ea4 TY |
1836 | 0x03, |
1837 | 0x00 /* SPC-3 (no version claimed) */ | |
87340e98 | 1838 | }; |
e94f7914 | 1839 | static const u8 versions_zbc[] = { |
f9ca5ab8 HR |
1840 | 0x00, |
1841 | 0xA0, /* SAM-5 (no version claimed) */ | |
1842 | ||
856c4663 HR |
1843 | 0x06, |
1844 | 0x00, /* SBC-4 (no version claimed) */ | |
f9ca5ab8 | 1845 | |
856c4663 HR |
1846 | 0x05, |
1847 | 0xC0, /* SPC-5 (no version claimed) */ | |
f9ca5ab8 HR |
1848 | |
1849 | 0x60, | |
856c4663 | 1850 | 0x24, /* ZBC r05 */ |
f9ca5ab8 HR |
1851 | }; |
1852 | ||
1da177e4 LT |
1853 | u8 hdr[] = { |
1854 | TYPE_DISK, | |
1855 | 0, | |
1856 | 0x5, /* claim SPC-3 version compatibility */ | |
1857 | 2, | |
415ffdde TY |
1858 | 95 - 4, |
1859 | 0, | |
1860 | 0, | |
1861 | 2 | |
1da177e4 LT |
1862 | }; |
1863 | ||
8a3e33cf ML |
1864 | /* set scsi removable (RMB) bit per ata bit, or if the |
1865 | * AHCI port says it's external (Hotplug-capable, eSATA). | |
1866 | */ | |
1867 | if (ata_id_removable(args->id) || | |
1868 | (args->dev->link->ap->pflags & ATA_PFLAG_EXTERNAL)) | |
1da177e4 LT |
1869 | hdr[1] |= (1 << 7); |
1870 | ||
56b8cbab | 1871 | if (args->dev->class == ATA_DEV_ZAC) { |
f9ca5ab8 | 1872 | hdr[0] = TYPE_ZBC; |
56b8cbab TY |
1873 | hdr[2] = 0x7; /* claim SPC-5 version compatibility */ |
1874 | } | |
f9ca5ab8 | 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 | ||
2206 | /** | |
f086b748 | 2207 | * ata_msense_control - Simulate MODE SENSE control mode page |
06dbde5f | 2208 | * @dev: ATA device of interest |
87340e98 | 2209 | * @buf: output buffer |
6ca8e794 | 2210 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2211 | * |
2212 | * Generate a generic MODE SENSE control mode page. | |
2213 | * | |
2214 | * LOCKING: | |
2215 | * None. | |
2216 | */ | |
f086b748 | 2217 | static unsigned int ata_msense_control(struct ata_device *dev, u8 *buf, |
06dbde5f | 2218 | bool changeable) |
1da177e4 | 2219 | { |
6ca8e794 | 2220 | modecpy(buf, def_control_mpage, sizeof(def_control_mpage), changeable); |
737bee93 TY |
2221 | if (changeable) { |
2222 | buf[2] |= (1 << 2); /* ata_mselect_control() */ | |
2223 | } else { | |
2224 | bool d_sense = (dev->flags & ATA_DFLAG_D_SENSE); | |
2225 | ||
2226 | buf[2] |= (d_sense << 2); /* descriptor format sense data */ | |
2227 | } | |
00ac37f5 | 2228 | return sizeof(def_control_mpage); |
1da177e4 LT |
2229 | } |
2230 | ||
2231 | /** | |
2232 | * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page | |
ec2a20e6 | 2233 | * @buf: output buffer |
6ca8e794 | 2234 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2235 | * |
2236 | * Generate a generic MODE SENSE r/w error recovery page. | |
2237 | * | |
2238 | * LOCKING: | |
2239 | * None. | |
2240 | */ | |
6ca8e794 | 2241 | static unsigned int ata_msense_rw_recovery(u8 *buf, bool changeable) |
1da177e4 | 2242 | { |
6ca8e794 PB |
2243 | modecpy(buf, def_rw_recovery_mpage, sizeof(def_rw_recovery_mpage), |
2244 | changeable); | |
00ac37f5 | 2245 | return sizeof(def_rw_recovery_mpage); |
1da177e4 LT |
2246 | } |
2247 | ||
2248 | /** | |
2249 | * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands | |
2250 | * @args: device IDENTIFY data / SCSI command of interest. | |
2251 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 2252 | * |
00ac37f5 DG |
2253 | * Simulate MODE SENSE commands. Assume this is invoked for direct |
2254 | * access devices (e.g. disks) only. There should be no block | |
2255 | * descriptor for other device types. | |
1da177e4 LT |
2256 | * |
2257 | * LOCKING: | |
cca3974e | 2258 | * spin_lock_irqsave(host lock) |
1da177e4 | 2259 | */ |
87340e98 | 2260 | static unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2261 | { |
9a3dccc4 | 2262 | struct ata_device *dev = args->dev; |
87340e98 | 2263 | u8 *scsicmd = args->cmd->cmnd, *p = rbuf; |
e94f7914 | 2264 | static const u8 sat_blk_desc[] = { |
00ac37f5 DG |
2265 | 0, 0, 0, 0, /* number of blocks: sat unspecified */ |
2266 | 0, | |
2267 | 0, 0x2, 0x0 /* block length: 512 bytes */ | |
2268 | }; | |
2269 | u8 pg, spg; | |
87340e98 | 2270 | unsigned int ebd, page_control, six_byte; |
4d2e4980 | 2271 | u8 dpofua = 0, bp = 0xff; |
bcfc867d | 2272 | u16 fp; |
1da177e4 | 2273 | |
1da177e4 | 2274 | six_byte = (scsicmd[0] == MODE_SENSE); |
00ac37f5 DG |
2275 | ebd = !(scsicmd[1] & 0x8); /* dbd bit inverted == edb */ |
2276 | /* | |
2277 | * LLBA bit in msense(10) ignored (compliant) | |
1da177e4 | 2278 | */ |
00ac37f5 | 2279 | |
1da177e4 | 2280 | page_control = scsicmd[2] >> 6; |
ae006510 DG |
2281 | switch (page_control) { |
2282 | case 0: /* current */ | |
6ca8e794 PB |
2283 | case 1: /* changeable */ |
2284 | case 2: /* defaults */ | |
ae006510 DG |
2285 | break; /* supported */ |
2286 | case 3: /* saved */ | |
2287 | goto saving_not_supp; | |
ae006510 | 2288 | default: |
bcfc867d | 2289 | fp = 2; |
0df10b84 | 2290 | bp = 6; |
ae006510 DG |
2291 | goto invalid_fld; |
2292 | } | |
1da177e4 | 2293 | |
87340e98 TH |
2294 | if (six_byte) |
2295 | p += 4 + (ebd ? 8 : 0); | |
2296 | else | |
2297 | p += 8 + (ebd ? 8 : 0); | |
1da177e4 | 2298 | |
00ac37f5 DG |
2299 | pg = scsicmd[2] & 0x3f; |
2300 | spg = scsicmd[3]; | |
2301 | /* | |
2302 | * No mode subpages supported (yet) but asking for _all_ | |
2303 | * subpages may be valid | |
2304 | */ | |
bcfc867d HR |
2305 | if (spg && (spg != ALL_SUB_MPAGES)) { |
2306 | fp = 3; | |
00ac37f5 | 2307 | goto invalid_fld; |
bcfc867d | 2308 | } |
00ac37f5 DG |
2309 | |
2310 | switch(pg) { | |
2311 | case RW_RECOVERY_MPAGE: | |
6ca8e794 | 2312 | p += ata_msense_rw_recovery(p, page_control == 1); |
1da177e4 LT |
2313 | break; |
2314 | ||
00ac37f5 | 2315 | case CACHE_MPAGE: |
6ca8e794 | 2316 | p += ata_msense_caching(args->id, p, page_control == 1); |
1da177e4 LT |
2317 | break; |
2318 | ||
87340e98 | 2319 | case CONTROL_MPAGE: |
f086b748 | 2320 | p += ata_msense_control(args->dev, p, page_control == 1); |
1da177e4 | 2321 | break; |
1da177e4 | 2322 | |
00ac37f5 | 2323 | case ALL_MPAGES: |
6ca8e794 PB |
2324 | p += ata_msense_rw_recovery(p, page_control == 1); |
2325 | p += ata_msense_caching(args->id, p, page_control == 1); | |
f086b748 | 2326 | p += ata_msense_control(args->dev, p, page_control == 1); |
1da177e4 LT |
2327 | break; |
2328 | ||
2329 | default: /* invalid page code */ | |
bcfc867d | 2330 | fp = 2; |
ae006510 | 2331 | goto invalid_fld; |
1da177e4 LT |
2332 | } |
2333 | ||
4d2e4980 | 2334 | if (dev->flags & ATA_DFLAG_FUA) |
9a3dccc4 TH |
2335 | dpofua = 1 << 4; |
2336 | ||
1da177e4 | 2337 | if (six_byte) { |
87340e98 TH |
2338 | rbuf[0] = p - rbuf - 1; |
2339 | rbuf[2] |= dpofua; | |
00ac37f5 | 2340 | if (ebd) { |
87340e98 TH |
2341 | rbuf[3] = sizeof(sat_blk_desc); |
2342 | memcpy(rbuf + 4, sat_blk_desc, sizeof(sat_blk_desc)); | |
00ac37f5 | 2343 | } |
1da177e4 | 2344 | } else { |
87340e98 TH |
2345 | unsigned int output_len = p - rbuf - 2; |
2346 | ||
1da177e4 | 2347 | rbuf[0] = output_len >> 8; |
87340e98 TH |
2348 | rbuf[1] = output_len; |
2349 | rbuf[3] |= dpofua; | |
00ac37f5 | 2350 | if (ebd) { |
87340e98 TH |
2351 | rbuf[7] = sizeof(sat_blk_desc); |
2352 | memcpy(rbuf + 8, sat_blk_desc, sizeof(sat_blk_desc)); | |
00ac37f5 | 2353 | } |
1da177e4 | 2354 | } |
1da177e4 | 2355 | return 0; |
ae006510 DG |
2356 | |
2357 | invalid_fld: | |
0df10b84 | 2358 | ata_scsi_set_invalid_field(dev, args->cmd, fp, bp); |
ae006510 DG |
2359 | return 1; |
2360 | ||
2361 | saving_not_supp: | |
06dbde5f | 2362 | ata_scsi_set_sense(dev, args->cmd, ILLEGAL_REQUEST, 0x39, 0x0); |
ae006510 DG |
2363 | /* "Saving parameters not supported" */ |
2364 | return 1; | |
1da177e4 LT |
2365 | } |
2366 | ||
2367 | /** | |
2368 | * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands | |
2369 | * @args: device IDENTIFY data / SCSI command of interest. | |
2370 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2371 | * |
2372 | * Simulate READ CAPACITY commands. | |
2373 | * | |
2374 | * LOCKING: | |
6a36261e | 2375 | * None. |
1da177e4 | 2376 | */ |
87340e98 | 2377 | static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2378 | { |
61d79a8e MP |
2379 | struct ata_device *dev = args->dev; |
2380 | u64 last_lba = dev->n_sectors - 1; /* LBA of the last block */ | |
295124dc GG |
2381 | u32 sector_size; /* physical sector size in bytes */ |
2382 | u8 log2_per_phys; | |
2383 | u16 lowest_aligned; | |
2384 | ||
2385 | sector_size = ata_id_logical_sector_size(dev->id); | |
2386 | log2_per_phys = ata_id_log2_per_physical_sector(dev->id); | |
2387 | lowest_aligned = ata_id_logical_sector_offset(dev->id, log2_per_phys); | |
1da177e4 | 2388 | |
1da177e4 | 2389 | if (args->cmd->cmnd[0] == READ_CAPACITY) { |
6a36261e TH |
2390 | if (last_lba >= 0xffffffffULL) |
2391 | last_lba = 0xffffffff; | |
0c144d0d | 2392 | |
1da177e4 | 2393 | /* sector count, 32-bit */ |
87340e98 TH |
2394 | rbuf[0] = last_lba >> (8 * 3); |
2395 | rbuf[1] = last_lba >> (8 * 2); | |
2396 | rbuf[2] = last_lba >> (8 * 1); | |
2397 | rbuf[3] = last_lba; | |
1da177e4 LT |
2398 | |
2399 | /* sector size */ | |
295124dc GG |
2400 | rbuf[4] = sector_size >> (8 * 3); |
2401 | rbuf[5] = sector_size >> (8 * 2); | |
2402 | rbuf[6] = sector_size >> (8 * 1); | |
2403 | rbuf[7] = sector_size; | |
1da177e4 LT |
2404 | } else { |
2405 | /* sector count, 64-bit */ | |
87340e98 TH |
2406 | rbuf[0] = last_lba >> (8 * 7); |
2407 | rbuf[1] = last_lba >> (8 * 6); | |
2408 | rbuf[2] = last_lba >> (8 * 5); | |
2409 | rbuf[3] = last_lba >> (8 * 4); | |
2410 | rbuf[4] = last_lba >> (8 * 3); | |
2411 | rbuf[5] = last_lba >> (8 * 2); | |
2412 | rbuf[6] = last_lba >> (8 * 1); | |
2413 | rbuf[7] = last_lba; | |
1da177e4 LT |
2414 | |
2415 | /* sector size */ | |
295124dc GG |
2416 | rbuf[ 8] = sector_size >> (8 * 3); |
2417 | rbuf[ 9] = sector_size >> (8 * 2); | |
2418 | rbuf[10] = sector_size >> (8 * 1); | |
2419 | rbuf[11] = sector_size; | |
61d79a8e MP |
2420 | |
2421 | rbuf[12] = 0; | |
295124dc | 2422 | rbuf[13] = log2_per_phys; |
61d79a8e MP |
2423 | rbuf[14] = (lowest_aligned >> 8) & 0x3f; |
2424 | rbuf[15] = lowest_aligned; | |
18f0f978 | 2425 | |
71d126fd AF |
2426 | if (ata_id_has_trim(args->id) && |
2427 | !(dev->horkage & ATA_HORKAGE_NOTRIM)) { | |
e61f7d1c | 2428 | rbuf[14] |= 0x80; /* LBPME */ |
e78db4df | 2429 | |
e61f7d1c MP |
2430 | if (ata_id_has_zero_after_trim(args->id) && |
2431 | dev->horkage & ATA_HORKAGE_ZERO_AFTER_TRIM) { | |
2432 | ata_dev_info(dev, "Enabling discard_zeroes_data\n"); | |
2433 | rbuf[14] |= 0x40; /* LBPRZ */ | |
2434 | } | |
e78db4df | 2435 | } |
6d1003ae HR |
2436 | if (ata_id_zoned_cap(args->id) || |
2437 | args->dev->class == ATA_DEV_ZAC) | |
2438 | rbuf[12] = (1 << 4); /* RC_BASIS */ | |
1da177e4 | 2439 | } |
1da177e4 LT |
2440 | return 0; |
2441 | } | |
2442 | ||
2443 | /** | |
2444 | * ata_scsiop_report_luns - Simulate REPORT LUNS command | |
2445 | * @args: device IDENTIFY data / SCSI command of interest. | |
2446 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2447 | * |
2448 | * Simulate REPORT LUNS command. | |
2449 | * | |
2450 | * LOCKING: | |
cca3974e | 2451 | * spin_lock_irqsave(host lock) |
1da177e4 | 2452 | */ |
87340e98 | 2453 | static unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2454 | { |
1da177e4 LT |
2455 | rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */ |
2456 | ||
2457 | return 0; | |
2458 | } | |
2459 | ||
77853bf2 | 2460 | static void atapi_sense_complete(struct ata_queued_cmd *qc) |
a939c963 | 2461 | { |
74e6c8c3 | 2462 | if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) { |
c6e6e666 JG |
2463 | /* FIXME: not quite right; we don't want the |
2464 | * translation of taskfile registers into | |
2465 | * a sense descriptors, since that's only | |
2466 | * correct for ATA, not ATAPI | |
2467 | */ | |
750426aa | 2468 | ata_gen_passthru_sense(qc); |
74e6c8c3 | 2469 | } |
a939c963 | 2470 | |
2aa8f5d6 | 2471 | ata_qc_done(qc); |
c6e6e666 | 2472 | } |
a939c963 | 2473 | |
c6e6e666 JG |
2474 | /* is it pointless to prefer PIO for "safety reasons"? */ |
2475 | static inline int ata_pio_use_silly(struct ata_port *ap) | |
2476 | { | |
2477 | return (ap->flags & ATA_FLAG_PIO_DMA); | |
2478 | } | |
2479 | ||
2480 | static void atapi_request_sense(struct ata_queued_cmd *qc) | |
2481 | { | |
2482 | struct ata_port *ap = qc->ap; | |
2483 | struct scsi_cmnd *cmd = qc->scsicmd; | |
2484 | ||
7ccd720d | 2485 | memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); |
a939c963 | 2486 | |
127102ae | 2487 | #ifdef CONFIG_ATA_SFF |
855d854a JB |
2488 | if (ap->ops->sff_tf_read) |
2489 | ap->ops->sff_tf_read(ap, &qc->tf); | |
127102ae | 2490 | #endif |
c6e6e666 JG |
2491 | |
2492 | /* fill these in, for the case where they are -not- overwritten */ | |
2493 | cmd->sense_buffer[0] = 0x70; | |
efcef265 | 2494 | cmd->sense_buffer[2] = qc->tf.error >> 4; |
c6e6e666 JG |
2495 | |
2496 | ata_qc_reinit(qc); | |
2497 | ||
93f8fecb | 2498 | /* setup sg table and init transfer direction */ |
cadb7345 | 2499 | sg_init_one(&qc->sgent, cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); |
93f8fecb | 2500 | ata_sg_init(qc, &qc->sgent, 1); |
a939c963 JG |
2501 | qc->dma_dir = DMA_FROM_DEVICE; |
2502 | ||
6e7846e9 | 2503 | memset(&qc->cdb, 0, qc->dev->cdb_len); |
a939c963 JG |
2504 | qc->cdb[0] = REQUEST_SENSE; |
2505 | qc->cdb[4] = SCSI_SENSE_BUFFERSIZE; | |
2506 | ||
2507 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
2508 | qc->tf.command = ATA_CMD_PACKET; | |
2509 | ||
c6e6e666 | 2510 | if (ata_pio_use_silly(ap)) { |
0dc36888 | 2511 | qc->tf.protocol = ATAPI_PROT_DMA; |
c6e6e666 JG |
2512 | qc->tf.feature |= ATAPI_PKT_DMA; |
2513 | } else { | |
0dc36888 | 2514 | qc->tf.protocol = ATAPI_PROT_PIO; |
2db78dd3 AC |
2515 | qc->tf.lbam = SCSI_SENSE_BUFFERSIZE; |
2516 | qc->tf.lbah = 0; | |
c6e6e666 | 2517 | } |
a939c963 JG |
2518 | qc->nbytes = SCSI_SENSE_BUFFERSIZE; |
2519 | ||
c6e6e666 | 2520 | qc->complete_fn = atapi_sense_complete; |
a939c963 | 2521 | |
8e0e694a | 2522 | ata_qc_issue(qc); |
a939c963 JG |
2523 | } |
2524 | ||
aa18da8b CH |
2525 | /* |
2526 | * ATAPI devices typically report zero for their SCSI version, and sometimes | |
2527 | * deviate from the spec WRT response data format. If SCSI version is | |
2528 | * reported as zero like normal, then we make the following fixups: | |
2529 | * 1) Fake MMC-5 version, to indicate to the Linux scsi midlayer this is a | |
2530 | * modern device. | |
2531 | * 2) Ensure response data format / ATAPI information are always correct. | |
2532 | */ | |
2533 | static void atapi_fixup_inquiry(struct scsi_cmnd *cmd) | |
2534 | { | |
2535 | u8 buf[4]; | |
2536 | ||
2537 | sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, 4); | |
2538 | if (buf[2] == 0) { | |
2539 | buf[2] = 0x5; | |
2540 | buf[3] = 0x32; | |
2541 | } | |
2542 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, 4); | |
2543 | } | |
2544 | ||
77853bf2 | 2545 | static void atapi_qc_complete(struct ata_queued_cmd *qc) |
1da177e4 LT |
2546 | { |
2547 | struct scsi_cmnd *cmd = qc->scsicmd; | |
a22e2eb0 | 2548 | unsigned int err_mask = qc->err_mask; |
1da177e4 | 2549 | |
246619da TH |
2550 | /* handle completion from new EH */ |
2551 | if (unlikely(qc->ap->ops->error_handler && | |
2552 | (err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID))) { | |
2553 | ||
2554 | if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) { | |
2555 | /* FIXME: not quite right; we don't want the | |
2556 | * translation of taskfile registers into a | |
2557 | * sense descriptors, since that's only | |
2558 | * correct for ATA, not ATAPI | |
2559 | */ | |
750426aa | 2560 | ata_gen_passthru_sense(qc); |
246619da TH |
2561 | } |
2562 | ||
22aac089 TH |
2563 | /* SCSI EH automatically locks door if sdev->locked is |
2564 | * set. Sometimes door lock request continues to | |
2565 | * fail, for example, when no media is present. This | |
2566 | * creates a loop - SCSI EH issues door lock which | |
2567 | * fails and gets invoked again to acquire sense data | |
2568 | * for the failed command. | |
2569 | * | |
2570 | * If door lock fails, always clear sdev->locked to | |
2571 | * avoid this infinite loop. | |
2a5f07b5 TH |
2572 | * |
2573 | * This may happen before SCSI scan is complete. Make | |
2574 | * sure qc->dev->sdev isn't NULL before dereferencing. | |
22aac089 | 2575 | */ |
2a5f07b5 | 2576 | if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL && qc->dev->sdev) |
22aac089 TH |
2577 | qc->dev->sdev->locked = 0; |
2578 | ||
246619da | 2579 | qc->scsicmd->result = SAM_STAT_CHECK_CONDITION; |
2aa8f5d6 | 2580 | ata_qc_done(qc); |
246619da TH |
2581 | return; |
2582 | } | |
2583 | ||
2584 | /* successful completion or old EH failure path */ | |
a7dac447 | 2585 | if (unlikely(err_mask & AC_ERR_DEV)) { |
1da177e4 | 2586 | cmd->result = SAM_STAT_CHECK_CONDITION; |
c6e6e666 | 2587 | atapi_request_sense(qc); |
77853bf2 | 2588 | return; |
74e6c8c3 | 2589 | } else if (unlikely(err_mask)) { |
a7dac447 JG |
2590 | /* FIXME: not quite right; we don't want the |
2591 | * translation of taskfile registers into | |
2592 | * a sense descriptors, since that's only | |
2593 | * correct for ATA, not ATAPI | |
2594 | */ | |
750426aa | 2595 | ata_gen_passthru_sense(qc); |
74e6c8c3 | 2596 | } else { |
aa18da8b CH |
2597 | if (cmd->cmnd[0] == INQUIRY && (cmd->cmnd[1] & 0x03) == 0) |
2598 | atapi_fixup_inquiry(cmd); | |
1da177e4 LT |
2599 | cmd->result = SAM_STAT_GOOD; |
2600 | } | |
2601 | ||
2aa8f5d6 | 2602 | ata_qc_done(qc); |
1da177e4 LT |
2603 | } |
2604 | /** | |
2605 | * atapi_xlat - Initialize PACKET taskfile | |
2606 | * @qc: command structure to be initialized | |
1da177e4 LT |
2607 | * |
2608 | * LOCKING: | |
cca3974e | 2609 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
2610 | * |
2611 | * RETURNS: | |
2612 | * Zero on success, non-zero on failure. | |
2613 | */ | |
ad706991 | 2614 | static unsigned int atapi_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 2615 | { |
542b1444 | 2616 | struct scsi_cmnd *scmd = qc->scsicmd; |
1da177e4 | 2617 | struct ata_device *dev = qc->dev; |
542b1444 | 2618 | int nodata = (scmd->sc_data_direction == DMA_NONE); |
5895ef9a | 2619 | int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO); |
2db78dd3 | 2620 | unsigned int nbytes; |
1da177e4 | 2621 | |
2e5704f6 TH |
2622 | memset(qc->cdb, 0, dev->cdb_len); |
2623 | memcpy(qc->cdb, scmd->cmnd, scmd->cmd_len); | |
1da177e4 LT |
2624 | |
2625 | qc->complete_fn = atapi_qc_complete; | |
2626 | ||
2627 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
542b1444 | 2628 | if (scmd->sc_data_direction == DMA_TO_DEVICE) { |
1da177e4 | 2629 | qc->tf.flags |= ATA_TFLAG_WRITE; |
1da177e4 LT |
2630 | } |
2631 | ||
2632 | qc->tf.command = ATA_CMD_PACKET; | |
aacda375 | 2633 | ata_qc_set_pc_nbytes(qc); |
e00f1ff3 TH |
2634 | |
2635 | /* check whether ATAPI DMA is safe */ | |
5895ef9a | 2636 | if (!nodata && !using_pio && atapi_check_dma(qc)) |
e00f1ff3 | 2637 | using_pio = 1; |
1da177e4 | 2638 | |
e190222d TH |
2639 | /* Some controller variants snoop this value for Packet |
2640 | * transfers to do state machine and FIFO management. Thus we | |
2641 | * want to set it properly, and for DMA where it is | |
2642 | * effectively meaningless. | |
2643 | */ | |
aacda375 | 2644 | nbytes = min(ata_qc_raw_nbytes(qc), (unsigned int)63 * 1024); |
2db78dd3 | 2645 | |
e190222d TH |
2646 | /* Most ATAPI devices which honor transfer chunk size don't |
2647 | * behave according to the spec when odd chunk size which | |
2648 | * matches the transfer length is specified. If the number of | |
2649 | * bytes to transfer is 2n+1. According to the spec, what | |
2650 | * should happen is to indicate that 2n+1 is going to be | |
2651 | * transferred and transfer 2n+2 bytes where the last byte is | |
2652 | * padding. | |
2653 | * | |
2654 | * In practice, this doesn't happen. ATAPI devices first | |
2655 | * indicate and transfer 2n bytes and then indicate and | |
2656 | * transfer 2 bytes where the last byte is padding. | |
2657 | * | |
2658 | * This inconsistency confuses several controllers which | |
2659 | * perform PIO using DMA such as Intel AHCIs and sil3124/32. | |
2660 | * These controllers use actual number of transferred bytes to | |
8d1e02d1 | 2661 | * update DMA pointer and transfer of 4n+2 bytes make those |
e190222d TH |
2662 | * controller push DMA pointer by 4n+4 bytes because SATA data |
2663 | * FISes are aligned to 4 bytes. This causes data corruption | |
2664 | * and buffer overrun. | |
2665 | * | |
2666 | * Always setting nbytes to even number solves this problem | |
2667 | * because then ATAPI devices don't have to split data at 2n | |
2668 | * boundaries. | |
2669 | */ | |
2670 | if (nbytes & 0x1) | |
2671 | nbytes++; | |
2672 | ||
2db78dd3 AC |
2673 | qc->tf.lbam = (nbytes & 0xFF); |
2674 | qc->tf.lbah = (nbytes >> 8); | |
2675 | ||
5895ef9a TH |
2676 | if (nodata) |
2677 | qc->tf.protocol = ATAPI_PROT_NODATA; | |
2678 | else if (using_pio) | |
2679 | qc->tf.protocol = ATAPI_PROT_PIO; | |
2680 | else { | |
e00f1ff3 | 2681 | /* DMA data xfer */ |
0dc36888 | 2682 | qc->tf.protocol = ATAPI_PROT_DMA; |
1da177e4 LT |
2683 | qc->tf.feature |= ATAPI_PKT_DMA; |
2684 | ||
91163006 TH |
2685 | if ((dev->flags & ATA_DFLAG_DMADIR) && |
2686 | (scmd->sc_data_direction != DMA_TO_DEVICE)) | |
95de719a | 2687 | /* some SATA bridges need us to indicate data xfer direction */ |
1da177e4 | 2688 | qc->tf.feature |= ATAPI_DMADIR; |
1da177e4 LT |
2689 | } |
2690 | ||
2db78dd3 AC |
2691 | |
2692 | /* FIXME: We need to translate 0x05 READ_BLOCK_LIMITS to a MODE_SENSE | |
2693 | as ATAPI tape drives don't get this right otherwise */ | |
1da177e4 LT |
2694 | return 0; |
2695 | } | |
2696 | ||
2dcb407e | 2697 | static struct ata_device *ata_find_dev(struct ata_port *ap, int devno) |
ab5b3a5b | 2698 | { |
071f44b1 | 2699 | if (!sata_pmp_attached(ap)) { |
59a5e266 DC |
2700 | if (likely(devno >= 0 && |
2701 | devno < ata_link_max_devices(&ap->link))) | |
41bda9c9 TH |
2702 | return &ap->link.device[devno]; |
2703 | } else { | |
59a5e266 DC |
2704 | if (likely(devno >= 0 && |
2705 | devno < ap->nr_pmp_links)) | |
41bda9c9 TH |
2706 | return &ap->pmp_link[devno].device[0]; |
2707 | } | |
2708 | ||
ab5b3a5b TH |
2709 | return NULL; |
2710 | } | |
2711 | ||
2dcb407e JG |
2712 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
2713 | const struct scsi_device *scsidev) | |
ab5b3a5b | 2714 | { |
41bda9c9 TH |
2715 | int devno; |
2716 | ||
ab5b3a5b | 2717 | /* skip commands not addressed to targets we simulate */ |
071f44b1 | 2718 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
2719 | if (unlikely(scsidev->channel || scsidev->lun)) |
2720 | return NULL; | |
2721 | devno = scsidev->id; | |
2722 | } else { | |
2723 | if (unlikely(scsidev->id || scsidev->lun)) | |
2724 | return NULL; | |
2725 | devno = scsidev->channel; | |
2726 | } | |
ab5b3a5b | 2727 | |
41bda9c9 | 2728 | return ata_find_dev(ap, devno); |
ab5b3a5b TH |
2729 | } |
2730 | ||
1da177e4 LT |
2731 | /** |
2732 | * ata_scsi_find_dev - lookup ata_device from scsi_cmnd | |
2733 | * @ap: ATA port to which the device is attached | |
2734 | * @scsidev: SCSI device from which we derive the ATA device | |
2735 | * | |
2736 | * Given various information provided in struct scsi_cmnd, | |
2737 | * map that onto an ATA bus, and using that mapping | |
2738 | * determine which ata_device is associated with the | |
2739 | * SCSI command to be sent. | |
2740 | * | |
2741 | * LOCKING: | |
cca3974e | 2742 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
2743 | * |
2744 | * RETURNS: | |
2745 | * Associated ATA device, or %NULL if not found. | |
2746 | */ | |
ec811a94 | 2747 | struct ata_device * |
057ace5e | 2748 | ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev) |
1da177e4 | 2749 | { |
ab5b3a5b | 2750 | struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev); |
1da177e4 | 2751 | |
2486fa56 | 2752 | if (unlikely(!dev || !ata_dev_enabled(dev))) |
1da177e4 LT |
2753 | return NULL; |
2754 | ||
1da177e4 LT |
2755 | return dev; |
2756 | } | |
2757 | ||
b095518e JG |
2758 | /* |
2759 | * ata_scsi_map_proto - Map pass-thru protocol value to taskfile value. | |
2760 | * @byte1: Byte 1 from pass-thru CDB. | |
2761 | * | |
2762 | * RETURNS: | |
2763 | * ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise. | |
2764 | */ | |
2765 | static u8 | |
2766 | ata_scsi_map_proto(u8 byte1) | |
2767 | { | |
2768 | switch((byte1 & 0x1e) >> 1) { | |
2dcb407e JG |
2769 | case 3: /* Non-data */ |
2770 | return ATA_PROT_NODATA; | |
2771 | ||
2772 | case 6: /* DMA */ | |
2773 | case 10: /* UDMA Data-in */ | |
2774 | case 11: /* UDMA Data-Out */ | |
2775 | return ATA_PROT_DMA; | |
2776 | ||
2777 | case 4: /* PIO Data-in */ | |
2778 | case 5: /* PIO Data-out */ | |
2779 | return ATA_PROT_PIO; | |
2780 | ||
ee7fb331 VK |
2781 | case 12: /* FPDMA */ |
2782 | return ATA_PROT_NCQ; | |
2783 | ||
2dcb407e JG |
2784 | case 0: /* Hard Reset */ |
2785 | case 1: /* SRST */ | |
2786 | case 8: /* Device Diagnostic */ | |
2787 | case 9: /* Device Reset */ | |
2788 | case 7: /* DMA Queued */ | |
2dcb407e JG |
2789 | case 15: /* Return Response Info */ |
2790 | default: /* Reserved */ | |
2791 | break; | |
b095518e JG |
2792 | } |
2793 | ||
2794 | return ATA_PROT_UNKNOWN; | |
2795 | } | |
2796 | ||
2797 | /** | |
2798 | * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile | |
2799 | * @qc: command structure to be initialized | |
b095518e | 2800 | * |
b1ffbf85 | 2801 | * Handles either 12, 16, or 32-byte versions of the CDB. |
b095518e JG |
2802 | * |
2803 | * RETURNS: | |
2804 | * Zero on success, non-zero on failure. | |
2805 | */ | |
ad706991 | 2806 | static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc) |
b095518e JG |
2807 | { |
2808 | struct ata_taskfile *tf = &(qc->tf); | |
542b1444 | 2809 | struct scsi_cmnd *scmd = qc->scsicmd; |
f79d409f | 2810 | struct ata_device *dev = qc->dev; |
ad706991 | 2811 | const u8 *cdb = scmd->cmnd; |
bcfc867d | 2812 | u16 fp; |
b1ffbf85 | 2813 | u16 cdb_offset = 0; |
b095518e | 2814 | |
b1ffbf85 MI |
2815 | /* 7Fh variable length cmd means a ata pass-thru(32) */ |
2816 | if (cdb[0] == VARIABLE_LENGTH_CMD) | |
2817 | cdb_offset = 9; | |
2818 | ||
2819 | tf->protocol = ata_scsi_map_proto(cdb[1 + cdb_offset]); | |
2820 | if (tf->protocol == ATA_PROT_UNKNOWN) { | |
bcfc867d | 2821 | fp = 1; |
9a405257 | 2822 | goto invalid_fld; |
bcfc867d | 2823 | } |
8190bdb9 | 2824 | |
5da5231b GK |
2825 | if ((cdb[2 + cdb_offset] & 0x3) == 0) { |
2826 | /* | |
2827 | * When T_LENGTH is zero (No data is transferred), dir should | |
2828 | * be DMA_NONE. | |
2829 | */ | |
2830 | if (scmd->sc_data_direction != DMA_NONE) { | |
2831 | fp = 2 + cdb_offset; | |
2832 | goto invalid_fld; | |
2833 | } | |
2834 | ||
2835 | if (ata_is_ncq(tf->protocol)) | |
2836 | tf->protocol = ATA_PROT_NCQ_NODATA; | |
2837 | } | |
5b844b63 | 2838 | |
5f8e7f17 VK |
2839 | /* enable LBA */ |
2840 | tf->flags |= ATA_TFLAG_LBA; | |
2841 | ||
b095518e JG |
2842 | /* |
2843 | * 12 and 16 byte CDBs use different offsets to | |
2844 | * provide the various register values. | |
2845 | */ | |
59b00404 SS |
2846 | switch (cdb[0]) { |
2847 | case ATA_16: | |
b095518e JG |
2848 | /* |
2849 | * 16-byte CDB - may contain extended commands. | |
2850 | * | |
2851 | * If that is the case, copy the upper byte register values. | |
2852 | */ | |
542b1444 TH |
2853 | if (cdb[1] & 0x01) { |
2854 | tf->hob_feature = cdb[3]; | |
2855 | tf->hob_nsect = cdb[5]; | |
2856 | tf->hob_lbal = cdb[7]; | |
2857 | tf->hob_lbam = cdb[9]; | |
2858 | tf->hob_lbah = cdb[11]; | |
b095518e JG |
2859 | tf->flags |= ATA_TFLAG_LBA48; |
2860 | } else | |
2861 | tf->flags &= ~ATA_TFLAG_LBA48; | |
2862 | ||
2863 | /* | |
2864 | * Always copy low byte, device and command registers. | |
2865 | */ | |
542b1444 TH |
2866 | tf->feature = cdb[4]; |
2867 | tf->nsect = cdb[6]; | |
2868 | tf->lbal = cdb[8]; | |
2869 | tf->lbam = cdb[10]; | |
2870 | tf->lbah = cdb[12]; | |
2871 | tf->device = cdb[13]; | |
2872 | tf->command = cdb[14]; | |
59b00404 SS |
2873 | break; |
2874 | case ATA_12: | |
b095518e JG |
2875 | /* |
2876 | * 12-byte CDB - incapable of extended commands. | |
2877 | */ | |
2878 | tf->flags &= ~ATA_TFLAG_LBA48; | |
2879 | ||
542b1444 TH |
2880 | tf->feature = cdb[3]; |
2881 | tf->nsect = cdb[4]; | |
2882 | tf->lbal = cdb[5]; | |
2883 | tf->lbam = cdb[6]; | |
2884 | tf->lbah = cdb[7]; | |
2885 | tf->device = cdb[8]; | |
2886 | tf->command = cdb[9]; | |
59b00404 SS |
2887 | break; |
2888 | default: | |
b1ffbf85 MI |
2889 | /* |
2890 | * 32-byte CDB - may contain extended command fields. | |
2891 | * | |
2892 | * If that is the case, copy the upper byte register values. | |
2893 | */ | |
2894 | if (cdb[10] & 0x01) { | |
2895 | tf->hob_feature = cdb[20]; | |
2896 | tf->hob_nsect = cdb[22]; | |
2897 | tf->hob_lbal = cdb[16]; | |
2898 | tf->hob_lbam = cdb[15]; | |
2899 | tf->hob_lbah = cdb[14]; | |
2900 | tf->flags |= ATA_TFLAG_LBA48; | |
2901 | } else | |
2902 | tf->flags &= ~ATA_TFLAG_LBA48; | |
2903 | ||
2904 | tf->feature = cdb[21]; | |
2905 | tf->nsect = cdb[23]; | |
2906 | tf->lbal = cdb[19]; | |
2907 | tf->lbam = cdb[18]; | |
2908 | tf->lbah = cdb[17]; | |
2909 | tf->device = cdb[24]; | |
2910 | tf->command = cdb[25]; | |
2911 | tf->auxiliary = get_unaligned_be32(&cdb[28]); | |
59b00404 | 2912 | break; |
b095518e | 2913 | } |
fa4453c4 | 2914 | |
179b310a HR |
2915 | /* For NCQ commands copy the tag value */ |
2916 | if (ata_is_ncq(tf->protocol)) | |
4e5b6260 | 2917 | tf->nsect = qc->hw_tag << 3; |
ee7fb331 | 2918 | |
fa4453c4 AL |
2919 | /* enforce correct master/slave bit */ |
2920 | tf->device = dev->devno ? | |
2921 | tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1; | |
b095518e | 2922 | |
bd30add8 | 2923 | switch (tf->command) { |
295124dc | 2924 | /* READ/WRITE LONG use a non-standard sect_size */ |
bd30add8 TH |
2925 | case ATA_CMD_READ_LONG: |
2926 | case ATA_CMD_READ_LONG_ONCE: | |
2927 | case ATA_CMD_WRITE_LONG: | |
2928 | case ATA_CMD_WRITE_LONG_ONCE: | |
bcfc867d HR |
2929 | if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1) { |
2930 | fp = 1; | |
bd30add8 | 2931 | goto invalid_fld; |
bcfc867d | 2932 | } |
bd30add8 | 2933 | qc->sect_size = scsi_bufflen(scmd); |
295124dc GG |
2934 | break; |
2935 | ||
2936 | /* commands using reported Logical Block size (e.g. 512 or 4K) */ | |
2937 | case ATA_CMD_CFA_WRITE_NE: | |
2938 | case ATA_CMD_CFA_TRANS_SECT: | |
2939 | case ATA_CMD_CFA_WRITE_MULT_NE: | |
2940 | /* XXX: case ATA_CMD_CFA_WRITE_SECTORS_WITHOUT_ERASE: */ | |
2941 | case ATA_CMD_READ: | |
2942 | case ATA_CMD_READ_EXT: | |
2943 | case ATA_CMD_READ_QUEUED: | |
2944 | /* XXX: case ATA_CMD_READ_QUEUED_EXT: */ | |
2945 | case ATA_CMD_FPDMA_READ: | |
2946 | case ATA_CMD_READ_MULTI: | |
2947 | case ATA_CMD_READ_MULTI_EXT: | |
2948 | case ATA_CMD_PIO_READ: | |
2949 | case ATA_CMD_PIO_READ_EXT: | |
2950 | case ATA_CMD_READ_STREAM_DMA_EXT: | |
2951 | case ATA_CMD_READ_STREAM_EXT: | |
2952 | case ATA_CMD_VERIFY: | |
2953 | case ATA_CMD_VERIFY_EXT: | |
2954 | case ATA_CMD_WRITE: | |
2955 | case ATA_CMD_WRITE_EXT: | |
2956 | case ATA_CMD_WRITE_FUA_EXT: | |
2957 | case ATA_CMD_WRITE_QUEUED: | |
2958 | case ATA_CMD_WRITE_QUEUED_FUA_EXT: | |
2959 | case ATA_CMD_FPDMA_WRITE: | |
2960 | case ATA_CMD_WRITE_MULTI: | |
2961 | case ATA_CMD_WRITE_MULTI_EXT: | |
2962 | case ATA_CMD_WRITE_MULTI_FUA_EXT: | |
2963 | case ATA_CMD_PIO_WRITE: | |
2964 | case ATA_CMD_PIO_WRITE_EXT: | |
2965 | case ATA_CMD_WRITE_STREAM_DMA_EXT: | |
2966 | case ATA_CMD_WRITE_STREAM_EXT: | |
2967 | qc->sect_size = scmd->device->sector_size; | |
2968 | break; | |
2969 | ||
2970 | /* Everything else uses 512 byte "sectors" */ | |
2971 | default: | |
2972 | qc->sect_size = ATA_SECT_SIZE; | |
bd30add8 TH |
2973 | } |
2974 | ||
2975 | /* | |
2976 | * Set flags so that all registers will be written, pass on | |
2977 | * write indication (used for PIO/DMA setup), result TF is | |
2978 | * copied back and we don't whine too much about its failure. | |
2979 | */ | |
bc496ed0 | 2980 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
bd30add8 TH |
2981 | if (scmd->sc_data_direction == DMA_TO_DEVICE) |
2982 | tf->flags |= ATA_TFLAG_WRITE; | |
2983 | ||
2984 | qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET; | |
2985 | ||
2986 | /* | |
2987 | * Set transfer length. | |
2988 | * | |
2989 | * TODO: find out if we need to do more here to | |
2990 | * cover scatter/gather case. | |
2991 | */ | |
2992 | ata_qc_set_pc_nbytes(qc); | |
2993 | ||
2994 | /* We may not issue DMA commands if no DMA mode is set */ | |
6ac586f2 | 2995 | if (tf->protocol == ATA_PROT_DMA && !ata_dma_enabled(dev)) { |
bcfc867d | 2996 | fp = 1; |
bd30add8 | 2997 | goto invalid_fld; |
2c1ec6fd EB |
2998 | } |
2999 | ||
3000 | /* We may not issue NCQ commands to devices not supporting NCQ */ | |
3001 | if (ata_is_ncq(tf->protocol) && !ata_ncq_enabled(dev)) { | |
3002 | fp = 1; | |
3003 | goto invalid_fld; | |
bcfc867d | 3004 | } |
bd30add8 | 3005 | |
1dce589c | 3006 | /* sanity check for pio multi commands */ |
bcfc867d HR |
3007 | if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf)) { |
3008 | fp = 1; | |
1dce589c | 3009 | goto invalid_fld; |
bcfc867d | 3010 | } |
1dce589c AL |
3011 | |
3012 | if (is_multi_taskfile(tf)) { | |
3013 | unsigned int multi_count = 1 << (cdb[1] >> 5); | |
3014 | ||
3015 | /* compare the passed through multi_count | |
3016 | * with the cached multi_count of libata | |
3017 | */ | |
3018 | if (multi_count != dev->multi_count) | |
a9a79dfe JP |
3019 | ata_dev_warn(dev, "invalid multi_count %u ignored\n", |
3020 | multi_count); | |
d26fc955 | 3021 | } |
1dce589c | 3022 | |
b095518e JG |
3023 | /* |
3024 | * Filter SET_FEATURES - XFER MODE command -- otherwise, | |
3025 | * SET_FEATURES - XFER MODE must be preceded/succeeded | |
3026 | * by an update to hardware-specific registers for each | |
3027 | * controller (i.e. the reason for ->set_piomode(), | |
3028 | * ->set_dmamode(), and ->post_set_mode() hooks). | |
3029 | */ | |
bd30add8 | 3030 | if (tf->command == ATA_CMD_SET_FEATURES && |
bcfc867d HR |
3031 | tf->feature == SETFEATURES_XFER) { |
3032 | fp = (cdb[0] == ATA_16) ? 4 : 3; | |
9a405257 | 3033 | goto invalid_fld; |
bcfc867d | 3034 | } |
b095518e JG |
3035 | |
3036 | /* | |
bd30add8 TH |
3037 | * Filter TPM commands by default. These provide an |
3038 | * essentially uncontrolled encrypted "back door" between | |
3039 | * applications and the disk. Set libata.allow_tpm=1 if you | |
3040 | * have a real reason for wanting to use them. This ensures | |
3041 | * that installed software cannot easily mess stuff up without | |
3042 | * user intent. DVR type users will probably ship with this enabled | |
3043 | * for movie content management. | |
b095518e | 3044 | * |
bd30add8 TH |
3045 | * Note that for ATA8 we can issue a DCS change and DCS freeze lock |
3046 | * for this and should do in future but that it is not sufficient as | |
3047 | * DCS is an optional feature set. Thus we also do the software filter | |
3048 | * so that we comply with the TC consortium stated goal that the user | |
3049 | * can turn off TC features of their system. | |
b095518e | 3050 | */ |
bcfc867d HR |
3051 | if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm) { |
3052 | fp = (cdb[0] == ATA_16) ? 14 : 9; | |
bd30add8 | 3053 | goto invalid_fld; |
bcfc867d | 3054 | } |
e61e0672 | 3055 | |
b095518e | 3056 | return 0; |
9a405257 TH |
3057 | |
3058 | invalid_fld: | |
0df10b84 | 3059 | ata_scsi_set_invalid_field(dev, scmd, fp, 0xff); |
9a405257 | 3060 | return 1; |
b095518e JG |
3061 | } |
3062 | ||
9379e6b8 ST |
3063 | /** |
3064 | * ata_format_dsm_trim_descr() - SATL Write Same to DSM Trim | |
3065 | * @cmd: SCSI command being translated | |
ef2d7392 | 3066 | * @trmax: Maximum number of entries that will fit in sector_size bytes. |
9379e6b8 | 3067 | * @sector: Starting sector |
7b203094 | 3068 | * @count: Total Range of request in logical sectors |
9379e6b8 ST |
3069 | * |
3070 | * Rewrite the WRITE SAME descriptor to be a DSM TRIM little-endian formatted | |
3071 | * descriptor. | |
3072 | * | |
3073 | * Upto 64 entries of the format: | |
3074 | * 63:48 Range Length | |
3075 | * 47:0 LBA | |
3076 | * | |
3077 | * Range Length of 0 is ignored. | |
3078 | * LBA's should be sorted order and not overlap. | |
3079 | * | |
3080 | * NOTE: this is the same format as ADD LBA(S) TO NV CACHE PINNED SET | |
ef2d7392 ST |
3081 | * |
3082 | * Return: Number of bytes copied into sglist. | |
9379e6b8 | 3083 | */ |
ef2d7392 ST |
3084 | static size_t ata_format_dsm_trim_descr(struct scsi_cmnd *cmd, u32 trmax, |
3085 | u64 sector, u32 count) | |
3086 | { | |
3087 | struct scsi_device *sdp = cmd->device; | |
3088 | size_t len = sdp->sector_size; | |
3089 | size_t r; | |
3090 | __le64 *buf; | |
3091 | u32 i = 0; | |
9379e6b8 ST |
3092 | unsigned long flags; |
3093 | ||
ef2d7392 ST |
3094 | WARN_ON(len > ATA_SCSI_RBUF_SIZE); |
3095 | ||
3096 | if (len > ATA_SCSI_RBUF_SIZE) | |
3097 | len = ATA_SCSI_RBUF_SIZE; | |
9379e6b8 ST |
3098 | |
3099 | spin_lock_irqsave(&ata_scsi_rbuf_lock, flags); | |
ef2d7392 ST |
3100 | buf = ((void *)ata_scsi_rbuf); |
3101 | memset(buf, 0, len); | |
3102 | while (i < trmax) { | |
9379e6b8 ST |
3103 | u64 entry = sector | |
3104 | ((u64)(count > 0xffff ? 0xffff : count) << 48); | |
ef2d7392 | 3105 | buf[i++] = __cpu_to_le64(entry); |
9379e6b8 ST |
3106 | if (count <= 0xffff) |
3107 | break; | |
3108 | count -= 0xffff; | |
3109 | sector += 0xffff; | |
3110 | } | |
ef2d7392 | 3111 | r = sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, len); |
9379e6b8 ST |
3112 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, flags); |
3113 | ||
ef2d7392 | 3114 | return r; |
9379e6b8 ST |
3115 | } |
3116 | ||
7b203094 ST |
3117 | /** |
3118 | * ata_scsi_write_same_xlat() - SATL Write Same to ATA SCT Write Same | |
3119 | * @qc: Command to be translated | |
3120 | * | |
3121 | * Translate a SCSI WRITE SAME command to be either a DSM TRIM command or | |
3122 | * an SCT Write Same command. | |
6baf20bc MCC |
3123 | * Based on WRITE SAME has the UNMAP flag: |
3124 | * | |
3125 | * - When set translate to DSM TRIM | |
3126 | * - When clear translate to SCT Write Same | |
7b203094 | 3127 | */ |
18f0f978 CH |
3128 | static unsigned int ata_scsi_write_same_xlat(struct ata_queued_cmd *qc) |
3129 | { | |
3130 | struct ata_taskfile *tf = &qc->tf; | |
3131 | struct scsi_cmnd *scmd = qc->scsicmd; | |
ef2d7392 ST |
3132 | struct scsi_device *sdp = scmd->device; |
3133 | size_t len = sdp->sector_size; | |
18f0f978 CH |
3134 | struct ata_device *dev = qc->dev; |
3135 | const u8 *cdb = scmd->cmnd; | |
3136 | u64 block; | |
3137 | u32 n_block; | |
ef2d7392 | 3138 | const u32 trmax = len >> 3; |
18f0f978 | 3139 | u32 size; |
bcfc867d | 3140 | u16 fp; |
0df10b84 | 3141 | u8 bp = 0xff; |
7b203094 | 3142 | u8 unmap = cdb[1] & 0x8; |
18f0f978 CH |
3143 | |
3144 | /* we may not issue DMA commands if no DMA mode is set */ | |
6ac586f2 | 3145 | if (unlikely(!ata_dma_enabled(dev))) |
bcfc867d | 3146 | goto invalid_opcode; |
18f0f978 | 3147 | |
c6ade20f CH |
3148 | /* |
3149 | * We only allow sending this command through the block layer, | |
3150 | * as it modifies the DATA OUT buffer, which would corrupt user | |
3151 | * memory for SG_IO commands. | |
3152 | */ | |
c8329cd5 | 3153 | if (unlikely(blk_rq_is_passthrough(scsi_cmd_to_rq(scmd)))) |
c6ade20f CH |
3154 | goto invalid_opcode; |
3155 | ||
bcfc867d HR |
3156 | if (unlikely(scmd->cmd_len < 16)) { |
3157 | fp = 15; | |
18f0f978 | 3158 | goto invalid_fld; |
bcfc867d | 3159 | } |
18f0f978 CH |
3160 | scsi_16_lba_len(cdb, &block, &n_block); |
3161 | ||
63ccc191 CH |
3162 | if (!unmap || |
3163 | (dev->horkage & ATA_HORKAGE_NOTRIM) || | |
3164 | !ata_id_has_trim(dev->id)) { | |
3165 | fp = 1; | |
3166 | bp = 3; | |
3167 | goto invalid_fld; | |
3168 | } | |
3169 | /* If the request is too large the cmd is invalid */ | |
3170 | if (n_block > 0xffff * trmax) { | |
3171 | fp = 2; | |
3172 | goto invalid_fld; | |
bcfc867d | 3173 | } |
18f0f978 CH |
3174 | |
3175 | /* | |
3176 | * WRITE SAME always has a sector sized buffer as payload, this | |
3177 | * should never be a multiple entry S/G list. | |
3178 | */ | |
3179 | if (!scsi_sg_count(scmd)) | |
bcfc867d | 3180 | goto invalid_param_len; |
18f0f978 | 3181 | |
ef2d7392 ST |
3182 | /* |
3183 | * size must match sector size in bytes | |
3184 | * For DATA SET MANAGEMENT TRIM in ACS-2 nsect (aka count) | |
3185 | * is defined as number of 512 byte blocks to be transferred. | |
3186 | */ | |
87fb6c31 | 3187 | |
63ccc191 CH |
3188 | size = ata_format_dsm_trim_descr(scmd, trmax, block, n_block); |
3189 | if (size != len) | |
3190 | goto invalid_param_len; | |
3191 | ||
3192 | if (ata_ncq_enabled(dev) && ata_fpdma_dsm_supported(dev)) { | |
3193 | /* Newer devices support queued TRIM commands */ | |
3194 | tf->protocol = ATA_PROT_NCQ; | |
3195 | tf->command = ATA_CMD_FPDMA_SEND; | |
3196 | tf->hob_nsect = ATA_SUBCMD_FPDMA_SEND_DSM & 0x1f; | |
4e5b6260 | 3197 | tf->nsect = qc->hw_tag << 3; |
63ccc191 CH |
3198 | tf->hob_feature = (size / 512) >> 8; |
3199 | tf->feature = size / 512; | |
3200 | ||
3201 | tf->auxiliary = 1; | |
3202 | } else { | |
7b203094 | 3203 | tf->protocol = ATA_PROT_DMA; |
63ccc191 CH |
3204 | tf->hob_feature = 0; |
3205 | tf->feature = ATA_DSM_TRIM; | |
3206 | tf->hob_nsect = (size / 512) >> 8; | |
3207 | tf->nsect = size / 512; | |
3208 | tf->command = ATA_CMD_DSM; | |
87fb6c31 MC |
3209 | } |
3210 | ||
18f0f978 CH |
3211 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 | |
3212 | ATA_TFLAG_WRITE; | |
3213 | ||
3214 | ata_qc_set_pc_nbytes(qc); | |
3215 | ||
3216 | return 0; | |
3217 | ||
bcfc867d | 3218 | invalid_fld: |
0df10b84 | 3219 | ata_scsi_set_invalid_field(dev, scmd, fp, bp); |
bcfc867d HR |
3220 | return 1; |
3221 | invalid_param_len: | |
3222 | /* "Parameter list length error" */ | |
3223 | ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
3224 | return 1; | |
3225 | invalid_opcode: | |
3226 | /* "Invalid command operation code" */ | |
3227 | ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x20, 0x0); | |
18f0f978 CH |
3228 | return 1; |
3229 | } | |
3230 | ||
7b203094 ST |
3231 | /** |
3232 | * ata_scsiop_maint_in - Simulate a subset of MAINTENANCE_IN | |
3233 | * @args: device MAINTENANCE_IN data / SCSI command of interest. | |
3234 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
3235 | * | |
3236 | * Yields a subset to satisfy scsi_report_opcode() | |
3237 | * | |
3238 | * LOCKING: | |
3239 | * spin_lock_irqsave(host lock) | |
3240 | */ | |
3241 | static unsigned int ata_scsiop_maint_in(struct ata_scsi_args *args, u8 *rbuf) | |
3242 | { | |
3243 | struct ata_device *dev = args->dev; | |
3244 | u8 *cdb = args->cmd->cmnd; | |
3245 | u8 supported = 0; | |
3246 | unsigned int err = 0; | |
3247 | ||
002c4871 | 3248 | if (cdb[2] != 1 && cdb[2] != 3) { |
7b203094 ST |
3249 | ata_dev_warn(dev, "invalid command format %d\n", cdb[2]); |
3250 | err = 2; | |
3251 | goto out; | |
3252 | } | |
002c4871 | 3253 | |
7b203094 ST |
3254 | switch (cdb[3]) { |
3255 | case INQUIRY: | |
3256 | case MODE_SENSE: | |
3257 | case MODE_SENSE_10: | |
3258 | case READ_CAPACITY: | |
3259 | case SERVICE_ACTION_IN_16: | |
3260 | case REPORT_LUNS: | |
3261 | case REQUEST_SENSE: | |
3262 | case SYNCHRONIZE_CACHE: | |
ea045fd3 | 3263 | case SYNCHRONIZE_CACHE_16: |
7b203094 ST |
3264 | case REZERO_UNIT: |
3265 | case SEEK_6: | |
3266 | case SEEK_10: | |
3267 | case TEST_UNIT_READY: | |
3268 | case SEND_DIAGNOSTIC: | |
3269 | case MAINTENANCE_IN: | |
3270 | case READ_6: | |
3271 | case READ_10: | |
3272 | case READ_16: | |
3273 | case WRITE_6: | |
3274 | case WRITE_10: | |
3275 | case WRITE_16: | |
3276 | case ATA_12: | |
3277 | case ATA_16: | |
3278 | case VERIFY: | |
3279 | case VERIFY_16: | |
3280 | case MODE_SELECT: | |
3281 | case MODE_SELECT_10: | |
3282 | case START_STOP: | |
3283 | supported = 3; | |
3284 | break; | |
7b203094 ST |
3285 | case ZBC_IN: |
3286 | case ZBC_OUT: | |
3287 | if (ata_id_zoned_cap(dev->id) || | |
3288 | dev->class == ATA_DEV_ZAC) | |
3289 | supported = 3; | |
3290 | break; | |
818831c8 CH |
3291 | case SECURITY_PROTOCOL_IN: |
3292 | case SECURITY_PROTOCOL_OUT: | |
3293 | if (dev->flags & ATA_DFLAG_TRUSTED) | |
3294 | supported = 3; | |
3295 | break; | |
7b203094 ST |
3296 | default: |
3297 | break; | |
3298 | } | |
3299 | out: | |
3300 | rbuf[1] = supported; /* supported */ | |
3301 | return err; | |
3302 | } | |
3303 | ||
28a3fc22 HR |
3304 | /** |
3305 | * ata_scsi_report_zones_complete - convert ATA output | |
3306 | * @qc: command structure returning the data | |
3307 | * | |
3308 | * Convert T-13 little-endian field representation into | |
3309 | * T-10 big-endian field representation. | |
3310 | * What a mess. | |
3311 | */ | |
3312 | static void ata_scsi_report_zones_complete(struct ata_queued_cmd *qc) | |
3313 | { | |
3314 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3315 | struct sg_mapping_iter miter; | |
3316 | unsigned long flags; | |
3317 | unsigned int bytes = 0; | |
3318 | ||
3319 | sg_miter_start(&miter, scsi_sglist(scmd), scsi_sg_count(scmd), | |
3320 | SG_MITER_TO_SG | SG_MITER_ATOMIC); | |
3321 | ||
3322 | local_irq_save(flags); | |
3323 | while (sg_miter_next(&miter)) { | |
3324 | unsigned int offset = 0; | |
3325 | ||
3326 | if (bytes == 0) { | |
3327 | char *hdr; | |
3328 | u32 list_length; | |
3329 | u64 max_lba, opt_lba; | |
3330 | u16 same; | |
3331 | ||
3332 | /* Swizzle header */ | |
3333 | hdr = miter.addr; | |
3334 | list_length = get_unaligned_le32(&hdr[0]); | |
3335 | same = get_unaligned_le16(&hdr[4]); | |
3336 | max_lba = get_unaligned_le64(&hdr[8]); | |
3337 | opt_lba = get_unaligned_le64(&hdr[16]); | |
3338 | put_unaligned_be32(list_length, &hdr[0]); | |
3339 | hdr[4] = same & 0xf; | |
3340 | put_unaligned_be64(max_lba, &hdr[8]); | |
3341 | put_unaligned_be64(opt_lba, &hdr[16]); | |
3342 | offset += 64; | |
3343 | bytes += 64; | |
3344 | } | |
3345 | while (offset < miter.length) { | |
3346 | char *rec; | |
3347 | u8 cond, type, non_seq, reset; | |
3348 | u64 size, start, wp; | |
3349 | ||
3350 | /* Swizzle zone descriptor */ | |
3351 | rec = miter.addr + offset; | |
3352 | type = rec[0] & 0xf; | |
3353 | cond = (rec[1] >> 4) & 0xf; | |
3354 | non_seq = (rec[1] & 2); | |
3355 | reset = (rec[1] & 1); | |
3356 | size = get_unaligned_le64(&rec[8]); | |
3357 | start = get_unaligned_le64(&rec[16]); | |
3358 | wp = get_unaligned_le64(&rec[24]); | |
3359 | rec[0] = type; | |
3360 | rec[1] = (cond << 4) | non_seq | reset; | |
3361 | put_unaligned_be64(size, &rec[8]); | |
3362 | put_unaligned_be64(start, &rec[16]); | |
3363 | put_unaligned_be64(wp, &rec[24]); | |
3364 | WARN_ON(offset + 64 > miter.length); | |
3365 | offset += 64; | |
3366 | bytes += 64; | |
3367 | } | |
3368 | } | |
3369 | sg_miter_stop(&miter); | |
3370 | local_irq_restore(flags); | |
3371 | ||
3372 | ata_scsi_qc_complete(qc); | |
3373 | } | |
3374 | ||
3375 | static unsigned int ata_scsi_zbc_in_xlat(struct ata_queued_cmd *qc) | |
3376 | { | |
3377 | struct ata_taskfile *tf = &qc->tf; | |
3378 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3379 | const u8 *cdb = scmd->cmnd; | |
3380 | u16 sect, fp = (u16)-1; | |
3381 | u8 sa, options, bp = 0xff; | |
3382 | u64 block; | |
3383 | u32 n_block; | |
3384 | ||
3385 | if (unlikely(scmd->cmd_len < 16)) { | |
3386 | ata_dev_warn(qc->dev, "invalid cdb length %d\n", | |
3387 | scmd->cmd_len); | |
3388 | fp = 15; | |
3389 | goto invalid_fld; | |
3390 | } | |
3391 | scsi_16_lba_len(cdb, &block, &n_block); | |
3392 | if (n_block != scsi_bufflen(scmd)) { | |
3393 | ata_dev_warn(qc->dev, "non-matching transfer count (%d/%d)\n", | |
3394 | n_block, scsi_bufflen(scmd)); | |
3395 | goto invalid_param_len; | |
3396 | } | |
3397 | sa = cdb[1] & 0x1f; | |
3398 | if (sa != ZI_REPORT_ZONES) { | |
3399 | ata_dev_warn(qc->dev, "invalid service action %d\n", sa); | |
3400 | fp = 1; | |
3401 | goto invalid_fld; | |
3402 | } | |
3403 | /* | |
3404 | * ZAC allows only for transfers in 512 byte blocks, | |
3405 | * and uses a 16 bit value for the transfer count. | |
3406 | */ | |
3407 | if ((n_block / 512) > 0xffff || n_block < 512 || (n_block % 512)) { | |
3408 | ata_dev_warn(qc->dev, "invalid transfer count %d\n", n_block); | |
3409 | goto invalid_param_len; | |
3410 | } | |
3411 | sect = n_block / 512; | |
3f17422b | 3412 | options = cdb[14] & 0xbf; |
28a3fc22 HR |
3413 | |
3414 | if (ata_ncq_enabled(qc->dev) && | |
3415 | ata_fpdma_zac_mgmt_in_supported(qc->dev)) { | |
3416 | tf->protocol = ATA_PROT_NCQ; | |
3417 | tf->command = ATA_CMD_FPDMA_RECV; | |
3418 | tf->hob_nsect = ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN & 0x1f; | |
4e5b6260 | 3419 | tf->nsect = qc->hw_tag << 3; |
28a3fc22 HR |
3420 | tf->feature = sect & 0xff; |
3421 | tf->hob_feature = (sect >> 8) & 0xff; | |
3f17422b | 3422 | tf->auxiliary = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES | (options << 8); |
28a3fc22 HR |
3423 | } else { |
3424 | tf->command = ATA_CMD_ZAC_MGMT_IN; | |
3425 | tf->feature = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES; | |
3426 | tf->protocol = ATA_PROT_DMA; | |
3427 | tf->hob_feature = options; | |
3428 | tf->hob_nsect = (sect >> 8) & 0xff; | |
3429 | tf->nsect = sect & 0xff; | |
3430 | } | |
3431 | tf->device = ATA_LBA; | |
3432 | tf->lbah = (block >> 16) & 0xff; | |
3433 | tf->lbam = (block >> 8) & 0xff; | |
3434 | tf->lbal = block & 0xff; | |
3435 | tf->hob_lbah = (block >> 40) & 0xff; | |
3436 | tf->hob_lbam = (block >> 32) & 0xff; | |
3437 | tf->hob_lbal = (block >> 24) & 0xff; | |
3438 | ||
3439 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48; | |
3440 | qc->flags |= ATA_QCFLAG_RESULT_TF; | |
3441 | ||
3442 | ata_qc_set_pc_nbytes(qc); | |
3443 | ||
3444 | qc->complete_fn = ata_scsi_report_zones_complete; | |
3445 | ||
3446 | return 0; | |
3447 | ||
3448 | invalid_fld: | |
3449 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); | |
3450 | return 1; | |
3451 | ||
3452 | invalid_param_len: | |
3453 | /* "Parameter list length error" */ | |
3454 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
3455 | return 1; | |
3456 | } | |
3457 | ||
27708a95 HR |
3458 | static unsigned int ata_scsi_zbc_out_xlat(struct ata_queued_cmd *qc) |
3459 | { | |
3460 | struct ata_taskfile *tf = &qc->tf; | |
3461 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3462 | struct ata_device *dev = qc->dev; | |
3463 | const u8 *cdb = scmd->cmnd; | |
2950cefa | 3464 | u8 all, sa; |
27708a95 HR |
3465 | u64 block; |
3466 | u32 n_block; | |
3467 | u16 fp = (u16)-1; | |
3468 | ||
3469 | if (unlikely(scmd->cmd_len < 16)) { | |
3470 | fp = 15; | |
3471 | goto invalid_fld; | |
3472 | } | |
3473 | ||
3474 | sa = cdb[1] & 0x1f; | |
3475 | if ((sa != ZO_CLOSE_ZONE) && (sa != ZO_FINISH_ZONE) && | |
3476 | (sa != ZO_OPEN_ZONE) && (sa != ZO_RESET_WRITE_POINTER)) { | |
3477 | fp = 1; | |
3478 | goto invalid_fld; | |
3479 | } | |
3480 | ||
3481 | scsi_16_lba_len(cdb, &block, &n_block); | |
3482 | if (n_block) { | |
3483 | /* | |
3484 | * ZAC MANAGEMENT OUT doesn't define any length | |
3485 | */ | |
3486 | goto invalid_param_len; | |
3487 | } | |
27708a95 | 3488 | |
2950cefa | 3489 | all = cdb[14] & 0x1; |
6edf1d4c DLM |
3490 | if (all) { |
3491 | /* | |
3492 | * Ignore the block address (zone ID) as defined by ZBC. | |
3493 | */ | |
3494 | block = 0; | |
3495 | } else if (block >= dev->n_sectors) { | |
b320a0a9 DLM |
3496 | /* |
3497 | * Block must be a valid zone ID (a zone start LBA). | |
3498 | */ | |
3499 | fp = 2; | |
3500 | goto invalid_fld; | |
3501 | } | |
27708a95 | 3502 | |
284b3b77 HR |
3503 | if (ata_ncq_enabled(qc->dev) && |
3504 | ata_fpdma_zac_mgmt_out_supported(qc->dev)) { | |
5b844b63 | 3505 | tf->protocol = ATA_PROT_NCQ_NODATA; |
284b3b77 | 3506 | tf->command = ATA_CMD_NCQ_NON_DATA; |
ee194b75 | 3507 | tf->feature = ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT; |
4e5b6260 | 3508 | tf->nsect = qc->hw_tag << 3; |
2950cefa | 3509 | tf->auxiliary = sa | ((u16)all << 8); |
284b3b77 HR |
3510 | } else { |
3511 | tf->protocol = ATA_PROT_NODATA; | |
3512 | tf->command = ATA_CMD_ZAC_MGMT_OUT; | |
3513 | tf->feature = sa; | |
2950cefa | 3514 | tf->hob_feature = all; |
284b3b77 | 3515 | } |
27708a95 HR |
3516 | tf->lbah = (block >> 16) & 0xff; |
3517 | tf->lbam = (block >> 8) & 0xff; | |
3518 | tf->lbal = block & 0xff; | |
3519 | tf->hob_lbah = (block >> 40) & 0xff; | |
3520 | tf->hob_lbam = (block >> 32) & 0xff; | |
3521 | tf->hob_lbal = (block >> 24) & 0xff; | |
3522 | tf->device = ATA_LBA; | |
3523 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48; | |
3524 | ||
3525 | return 0; | |
3526 | ||
18f0f978 | 3527 | invalid_fld: |
27708a95 HR |
3528 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
3529 | return 1; | |
27708a95 HR |
3530 | invalid_param_len: |
3531 | /* "Parameter list length error" */ | |
3532 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
18f0f978 CH |
3533 | return 1; |
3534 | } | |
3535 | ||
1b26d29c PB |
3536 | /** |
3537 | * ata_mselect_caching - Simulate MODE SELECT for caching info page | |
3538 | * @qc: Storage for translated ATA taskfile | |
3539 | * @buf: input buffer | |
3540 | * @len: number of valid bytes in the input buffer | |
7780081c | 3541 | * @fp: out parameter for the failed field on error |
1b26d29c PB |
3542 | * |
3543 | * Prepare a taskfile to modify caching information for the device. | |
3544 | * | |
3545 | * LOCKING: | |
3546 | * None. | |
3547 | */ | |
3548 | static int ata_mselect_caching(struct ata_queued_cmd *qc, | |
7780081c | 3549 | const u8 *buf, int len, u16 *fp) |
1b26d29c PB |
3550 | { |
3551 | struct ata_taskfile *tf = &qc->tf; | |
3552 | struct ata_device *dev = qc->dev; | |
d7372cb6 | 3553 | u8 mpage[CACHE_MPAGE_LEN]; |
1b26d29c | 3554 | u8 wce; |
7780081c | 3555 | int i; |
1b26d29c PB |
3556 | |
3557 | /* | |
3558 | * The first two bytes of def_cache_mpage are a header, so offsets | |
3559 | * in mpage are off by 2 compared to buf. Same for len. | |
3560 | */ | |
3561 | ||
7780081c | 3562 | if (len != CACHE_MPAGE_LEN - 2) { |
da299470 | 3563 | *fp = min(len, CACHE_MPAGE_LEN - 2); |
1b26d29c | 3564 | return -EINVAL; |
7780081c | 3565 | } |
1b26d29c PB |
3566 | |
3567 | wce = buf[0] & (1 << 2); | |
3568 | ||
3569 | /* | |
3570 | * Check that read-only bits are not modified. | |
3571 | */ | |
3572 | ata_msense_caching(dev->id, mpage, false); | |
7780081c HR |
3573 | for (i = 0; i < CACHE_MPAGE_LEN - 2; i++) { |
3574 | if (i == 0) | |
3575 | continue; | |
3576 | if (mpage[i + 2] != buf[i]) { | |
3577 | *fp = i; | |
3578 | return -EINVAL; | |
3579 | } | |
3580 | } | |
1b26d29c PB |
3581 | |
3582 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; | |
3583 | tf->protocol = ATA_PROT_NODATA; | |
3584 | tf->nsect = 0; | |
3585 | tf->command = ATA_CMD_SET_FEATURES; | |
3586 | tf->feature = wce ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF; | |
3587 | return 0; | |
3588 | } | |
3589 | ||
06dbde5f HR |
3590 | /** |
3591 | * ata_mselect_control - Simulate MODE SELECT for control page | |
3592 | * @qc: Storage for translated ATA taskfile | |
3593 | * @buf: input buffer | |
3594 | * @len: number of valid bytes in the input buffer | |
7780081c | 3595 | * @fp: out parameter for the failed field on error |
06dbde5f HR |
3596 | * |
3597 | * Prepare a taskfile to modify caching information for the device. | |
3598 | * | |
3599 | * LOCKING: | |
3600 | * None. | |
3601 | */ | |
3602 | static int ata_mselect_control(struct ata_queued_cmd *qc, | |
7780081c | 3603 | const u8 *buf, int len, u16 *fp) |
06dbde5f HR |
3604 | { |
3605 | struct ata_device *dev = qc->dev; | |
d7372cb6 | 3606 | u8 mpage[CONTROL_MPAGE_LEN]; |
06dbde5f | 3607 | u8 d_sense; |
7780081c | 3608 | int i; |
06dbde5f HR |
3609 | |
3610 | /* | |
3611 | * The first two bytes of def_control_mpage are a header, so offsets | |
3612 | * in mpage are off by 2 compared to buf. Same for len. | |
3613 | */ | |
3614 | ||
7780081c | 3615 | if (len != CONTROL_MPAGE_LEN - 2) { |
da299470 | 3616 | *fp = min(len, CONTROL_MPAGE_LEN - 2); |
06dbde5f | 3617 | return -EINVAL; |
7780081c | 3618 | } |
06dbde5f HR |
3619 | |
3620 | d_sense = buf[0] & (1 << 2); | |
3621 | ||
3622 | /* | |
3623 | * Check that read-only bits are not modified. | |
3624 | */ | |
f086b748 | 3625 | ata_msense_control(dev, mpage, false); |
7780081c HR |
3626 | for (i = 0; i < CONTROL_MPAGE_LEN - 2; i++) { |
3627 | if (i == 0) | |
3628 | continue; | |
3629 | if (mpage[2 + i] != buf[i]) { | |
3630 | *fp = i; | |
3631 | return -EINVAL; | |
3632 | } | |
3633 | } | |
06dbde5f HR |
3634 | if (d_sense & (1 << 2)) |
3635 | dev->flags |= ATA_DFLAG_D_SENSE; | |
3636 | else | |
3637 | dev->flags &= ~ATA_DFLAG_D_SENSE; | |
06dbde5f HR |
3638 | return 0; |
3639 | } | |
3640 | ||
1b26d29c | 3641 | /** |
01efd600 | 3642 | * ata_scsi_mode_select_xlat - Simulate MODE SELECT 6, 10 commands |
1b26d29c PB |
3643 | * @qc: Storage for translated ATA taskfile |
3644 | * | |
3645 | * Converts a MODE SELECT command to an ATA SET FEATURES taskfile. | |
3646 | * Assume this is invoked for direct access devices (e.g. disks) only. | |
3647 | * There should be no block descriptor for other device types. | |
3648 | * | |
3649 | * LOCKING: | |
3650 | * spin_lock_irqsave(host lock) | |
3651 | */ | |
3652 | static unsigned int ata_scsi_mode_select_xlat(struct ata_queued_cmd *qc) | |
3653 | { | |
3654 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3655 | const u8 *cdb = scmd->cmnd; | |
1b26d29c PB |
3656 | u8 pg, spg; |
3657 | unsigned six_byte, pg_len, hdr_len, bd_len; | |
3658 | int len; | |
7780081c HR |
3659 | u16 fp = (u16)-1; |
3660 | u8 bp = 0xff; | |
f650ef61 YB |
3661 | u8 buffer[64]; |
3662 | const u8 *p = buffer; | |
1b26d29c | 3663 | |
1b26d29c PB |
3664 | six_byte = (cdb[0] == MODE_SELECT); |
3665 | if (six_byte) { | |
bcfc867d HR |
3666 | if (scmd->cmd_len < 5) { |
3667 | fp = 4; | |
1b26d29c | 3668 | goto invalid_fld; |
bcfc867d | 3669 | } |
1b26d29c PB |
3670 | |
3671 | len = cdb[4]; | |
3672 | hdr_len = 4; | |
3673 | } else { | |
bcfc867d HR |
3674 | if (scmd->cmd_len < 9) { |
3675 | fp = 8; | |
1b26d29c | 3676 | goto invalid_fld; |
bcfc867d | 3677 | } |
1b26d29c | 3678 | |
261e1507 | 3679 | len = get_unaligned_be16(&cdb[7]); |
1b26d29c PB |
3680 | hdr_len = 8; |
3681 | } | |
3682 | ||
3683 | /* We only support PF=1, SP=0. */ | |
bcfc867d HR |
3684 | if ((cdb[1] & 0x11) != 0x10) { |
3685 | fp = 1; | |
0df10b84 | 3686 | bp = (cdb[1] & 0x01) ? 1 : 5; |
1b26d29c | 3687 | goto invalid_fld; |
bcfc867d | 3688 | } |
1b26d29c PB |
3689 | |
3690 | /* Test early for possible overrun. */ | |
3691 | if (!scsi_sg_count(scmd) || scsi_sglist(scmd)->length < len) | |
3692 | goto invalid_param_len; | |
3693 | ||
1b26d29c PB |
3694 | /* Move past header and block descriptors. */ |
3695 | if (len < hdr_len) | |
3696 | goto invalid_param_len; | |
3697 | ||
f650ef61 YB |
3698 | if (!sg_copy_to_buffer(scsi_sglist(scmd), scsi_sg_count(scmd), |
3699 | buffer, sizeof(buffer))) | |
3700 | goto invalid_param_len; | |
3701 | ||
1b26d29c PB |
3702 | if (six_byte) |
3703 | bd_len = p[3]; | |
3704 | else | |
261e1507 | 3705 | bd_len = get_unaligned_be16(&p[6]); |
1b26d29c PB |
3706 | |
3707 | len -= hdr_len; | |
3708 | p += hdr_len; | |
3709 | if (len < bd_len) | |
3710 | goto invalid_param_len; | |
7780081c HR |
3711 | if (bd_len != 0 && bd_len != 8) { |
3712 | fp = (six_byte) ? 3 : 6; | |
3713 | fp += bd_len + hdr_len; | |
1b26d29c | 3714 | goto invalid_param; |
7780081c | 3715 | } |
1b26d29c PB |
3716 | |
3717 | len -= bd_len; | |
3718 | p += bd_len; | |
3719 | if (len == 0) | |
3720 | goto skip; | |
3721 | ||
3722 | /* Parse both possible formats for the mode page headers. */ | |
3723 | pg = p[0] & 0x3f; | |
3724 | if (p[0] & 0x40) { | |
3725 | if (len < 4) | |
3726 | goto invalid_param_len; | |
3727 | ||
3728 | spg = p[1]; | |
261e1507 | 3729 | pg_len = get_unaligned_be16(&p[2]); |
1b26d29c PB |
3730 | p += 4; |
3731 | len -= 4; | |
3732 | } else { | |
3733 | if (len < 2) | |
3734 | goto invalid_param_len; | |
3735 | ||
3736 | spg = 0; | |
3737 | pg_len = p[1]; | |
3738 | p += 2; | |
3739 | len -= 2; | |
3740 | } | |
3741 | ||
3742 | /* | |
3743 | * No mode subpages supported (yet) but asking for _all_ | |
3744 | * subpages may be valid | |
3745 | */ | |
7780081c HR |
3746 | if (spg && (spg != ALL_SUB_MPAGES)) { |
3747 | fp = (p[0] & 0x40) ? 1 : 0; | |
3748 | fp += hdr_len + bd_len; | |
1b26d29c | 3749 | goto invalid_param; |
7780081c | 3750 | } |
1b26d29c PB |
3751 | if (pg_len > len) |
3752 | goto invalid_param_len; | |
3753 | ||
3754 | switch (pg) { | |
3755 | case CACHE_MPAGE: | |
7780081c HR |
3756 | if (ata_mselect_caching(qc, p, pg_len, &fp) < 0) { |
3757 | fp += hdr_len + bd_len; | |
1b26d29c | 3758 | goto invalid_param; |
7780081c | 3759 | } |
1b26d29c | 3760 | break; |
06dbde5f | 3761 | case CONTROL_MPAGE: |
7780081c HR |
3762 | if (ata_mselect_control(qc, p, pg_len, &fp) < 0) { |
3763 | fp += hdr_len + bd_len; | |
06dbde5f | 3764 | goto invalid_param; |
535fd072 TY |
3765 | } else { |
3766 | goto skip; /* No ATA command to send */ | |
7780081c | 3767 | } |
1b26d29c | 3768 | break; |
1b26d29c | 3769 | default: /* invalid page code */ |
7780081c | 3770 | fp = bd_len + hdr_len; |
1b26d29c PB |
3771 | goto invalid_param; |
3772 | } | |
3773 | ||
3774 | /* | |
3775 | * Only one page has changeable data, so we only support setting one | |
3776 | * page at a time. | |
3777 | */ | |
3778 | if (len > pg_len) | |
3779 | goto invalid_param; | |
3780 | ||
3781 | return 0; | |
3782 | ||
3783 | invalid_fld: | |
0df10b84 | 3784 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); |
1b26d29c PB |
3785 | return 1; |
3786 | ||
3787 | invalid_param: | |
7780081c | 3788 | ata_scsi_set_invalid_parameter(qc->dev, scmd, fp); |
1b26d29c PB |
3789 | return 1; |
3790 | ||
3791 | invalid_param_len: | |
3792 | /* "Parameter list length error" */ | |
06dbde5f | 3793 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); |
1b26d29c PB |
3794 | return 1; |
3795 | ||
3796 | skip: | |
3797 | scmd->result = SAM_STAT_GOOD; | |
3798 | return 1; | |
3799 | } | |
3800 | ||
818831c8 CH |
3801 | static u8 ata_scsi_trusted_op(u32 len, bool send, bool dma) |
3802 | { | |
3803 | if (len == 0) | |
3804 | return ATA_CMD_TRUSTED_NONDATA; | |
3805 | else if (send) | |
3806 | return dma ? ATA_CMD_TRUSTED_SND_DMA : ATA_CMD_TRUSTED_SND; | |
3807 | else | |
3808 | return dma ? ATA_CMD_TRUSTED_RCV_DMA : ATA_CMD_TRUSTED_RCV; | |
3809 | } | |
3810 | ||
3811 | static unsigned int ata_scsi_security_inout_xlat(struct ata_queued_cmd *qc) | |
3812 | { | |
3813 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3814 | const u8 *cdb = scmd->cmnd; | |
3815 | struct ata_taskfile *tf = &qc->tf; | |
3816 | u8 secp = cdb[1]; | |
3817 | bool send = (cdb[0] == SECURITY_PROTOCOL_OUT); | |
3818 | u16 spsp = get_unaligned_be16(&cdb[2]); | |
3819 | u32 len = get_unaligned_be32(&cdb[6]); | |
3820 | bool dma = !(qc->dev->flags & ATA_DFLAG_PIO); | |
3821 | ||
3822 | /* | |
3823 | * We don't support the ATA "security" protocol. | |
3824 | */ | |
3825 | if (secp == 0xef) { | |
3826 | ata_scsi_set_invalid_field(qc->dev, scmd, 1, 0); | |
3827 | return 1; | |
3828 | } | |
3829 | ||
3830 | if (cdb[4] & 7) { /* INC_512 */ | |
3831 | if (len > 0xffff) { | |
3832 | ata_scsi_set_invalid_field(qc->dev, scmd, 6, 0); | |
3833 | return 1; | |
3834 | } | |
3835 | } else { | |
3836 | if (len > 0x01fffe00) { | |
3837 | ata_scsi_set_invalid_field(qc->dev, scmd, 6, 0); | |
3838 | return 1; | |
3839 | } | |
3840 | ||
3841 | /* convert to the sector-based ATA addressing */ | |
3842 | len = (len + 511) / 512; | |
3843 | } | |
3844 | ||
3845 | tf->protocol = dma ? ATA_PROT_DMA : ATA_PROT_PIO; | |
3846 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR | ATA_TFLAG_LBA; | |
3847 | if (send) | |
3848 | tf->flags |= ATA_TFLAG_WRITE; | |
3849 | tf->command = ata_scsi_trusted_op(len, send, dma); | |
3850 | tf->feature = secp; | |
3851 | tf->lbam = spsp & 0xff; | |
3852 | tf->lbah = spsp >> 8; | |
3853 | ||
3854 | if (len) { | |
3855 | tf->nsect = len & 0xff; | |
3856 | tf->lbal = len >> 8; | |
3857 | } else { | |
3858 | if (!send) | |
3859 | tf->lbah = (1 << 7); | |
3860 | } | |
3861 | ||
3862 | ata_qc_set_pc_nbytes(qc); | |
3863 | return 0; | |
3864 | } | |
3865 | ||
b1ffbf85 MI |
3866 | /** |
3867 | * ata_scsi_var_len_cdb_xlat - SATL variable length CDB to Handler | |
3868 | * @qc: Command to be translated | |
3869 | * | |
3870 | * Translate a SCSI variable length CDB to specified commands. | |
3871 | * It checks a service action value in CDB to call corresponding handler. | |
3872 | * | |
3873 | * RETURNS: | |
3874 | * Zero on success, non-zero on failure | |
3875 | * | |
3876 | */ | |
3877 | static unsigned int ata_scsi_var_len_cdb_xlat(struct ata_queued_cmd *qc) | |
3878 | { | |
3879 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3880 | const u8 *cdb = scmd->cmnd; | |
3881 | const u16 sa = get_unaligned_be16(&cdb[8]); | |
3882 | ||
3883 | /* | |
3884 | * if service action represents a ata pass-thru(32) command, | |
3885 | * then pass it to ata_scsi_pass_thru handler. | |
3886 | */ | |
3887 | if (sa == ATA_32) | |
3888 | return ata_scsi_pass_thru(qc); | |
3889 | ||
b1ffbf85 MI |
3890 | /* unsupported service action */ |
3891 | return 1; | |
3892 | } | |
3893 | ||
1da177e4 LT |
3894 | /** |
3895 | * ata_get_xlat_func - check if SCSI to ATA translation is possible | |
3896 | * @dev: ATA device | |
3897 | * @cmd: SCSI command opcode to consider | |
3898 | * | |
3899 | * Look up the SCSI command given, and determine whether the | |
3900 | * SCSI command is to be translated or simulated. | |
3901 | * | |
3902 | * RETURNS: | |
3903 | * Pointer to translation function if possible, %NULL if not. | |
3904 | */ | |
3905 | ||
3906 | static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd) | |
3907 | { | |
3908 | switch (cmd) { | |
3909 | case READ_6: | |
3910 | case READ_10: | |
3911 | case READ_16: | |
3912 | ||
3913 | case WRITE_6: | |
3914 | case WRITE_10: | |
3915 | case WRITE_16: | |
3916 | return ata_scsi_rw_xlat; | |
3917 | ||
0cdd6eb7 | 3918 | case WRITE_SAME_16: |
18f0f978 CH |
3919 | return ata_scsi_write_same_xlat; |
3920 | ||
1da177e4 | 3921 | case SYNCHRONIZE_CACHE: |
ea045fd3 | 3922 | case SYNCHRONIZE_CACHE_16: |
1da177e4 LT |
3923 | if (ata_try_flush_cache(dev)) |
3924 | return ata_scsi_flush_xlat; | |
3925 | break; | |
3926 | ||
3927 | case VERIFY: | |
3928 | case VERIFY_16: | |
3929 | return ata_scsi_verify_xlat; | |
b095518e JG |
3930 | |
3931 | case ATA_12: | |
3932 | case ATA_16: | |
3933 | return ata_scsi_pass_thru; | |
da61396d | 3934 | |
b1ffbf85 MI |
3935 | case VARIABLE_LENGTH_CMD: |
3936 | return ata_scsi_var_len_cdb_xlat; | |
3937 | ||
1b26d29c PB |
3938 | case MODE_SELECT: |
3939 | case MODE_SELECT_10: | |
3940 | return ata_scsi_mode_select_xlat; | |
1b26d29c | 3941 | |
28a3fc22 HR |
3942 | case ZBC_IN: |
3943 | return ata_scsi_zbc_in_xlat; | |
3944 | ||
27708a95 HR |
3945 | case ZBC_OUT: |
3946 | return ata_scsi_zbc_out_xlat; | |
3947 | ||
818831c8 CH |
3948 | case SECURITY_PROTOCOL_IN: |
3949 | case SECURITY_PROTOCOL_OUT: | |
3950 | if (!(dev->flags & ATA_DFLAG_TRUSTED)) | |
3951 | break; | |
3952 | return ata_scsi_security_inout_xlat; | |
3953 | ||
972dcafb DG |
3954 | case START_STOP: |
3955 | return ata_scsi_start_stop_xlat; | |
1da177e4 LT |
3956 | } |
3957 | ||
3958 | return NULL; | |
3959 | } | |
3960 | ||
15964ff7 | 3961 | int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, struct ata_device *dev) |
eb3f0f9c | 3962 | { |
e20e81a2 | 3963 | struct ata_port *ap = dev->link->ap; |
baf4fdfa ML |
3964 | u8 scsi_op = scmd->cmnd[0]; |
3965 | ata_xlat_func_t xlat_func; | |
84eac327 | 3966 | |
e20e81a2 NC |
3967 | /* |
3968 | * scsi_queue_rq() will defer commands if scsi_host_in_recovery(). | |
3969 | * However, this check is done without holding the ap->lock (a libata | |
3970 | * specific lock), so we can have received an error irq since then, | |
3971 | * therefore we must check if EH is pending, while holding ap->lock. | |
3972 | */ | |
3973 | if (ap->pflags & (ATA_PFLAG_EH_PENDING | ATA_PFLAG_EH_IN_PROGRESS)) | |
3974 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
3975 | ||
84eac327 WH |
3976 | if (unlikely(!scmd->cmd_len)) |
3977 | goto bad_cdb_len; | |
2115ea94 | 3978 | |
9162c657 | 3979 | if (dev->class == ATA_DEV_ATA || dev->class == ATA_DEV_ZAC) { |
84eac327 | 3980 | if (unlikely(scmd->cmd_len > dev->cdb_len)) |
baf4fdfa | 3981 | goto bad_cdb_len; |
eb3f0f9c | 3982 | |
baf4fdfa | 3983 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
84eac327 WH |
3984 | } else if (likely((scsi_op != ATA_16) || !atapi_passthru16)) { |
3985 | /* relay SCSI command to ATAPI device */ | |
3986 | int len = COMMAND_SIZE(scsi_op); | |
baf4fdfa | 3987 | |
84eac327 WH |
3988 | if (unlikely(len > scmd->cmd_len || |
3989 | len > dev->cdb_len || | |
3990 | scmd->cmd_len > ATAPI_CDB_LEN)) | |
3991 | goto bad_cdb_len; | |
baf4fdfa | 3992 | |
84eac327 WH |
3993 | xlat_func = atapi_xlat; |
3994 | } else { | |
3995 | /* ATA_16 passthru, treat as an ATA command */ | |
3996 | if (unlikely(scmd->cmd_len > 16)) | |
3997 | goto bad_cdb_len; | |
baf4fdfa | 3998 | |
84eac327 | 3999 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
baf4fdfa ML |
4000 | } |
4001 | ||
4002 | if (xlat_func) | |
84eac327 | 4003 | return ata_scsi_translate(dev, scmd, xlat_func); |
2115ea94 | 4004 | |
84eac327 WH |
4005 | ata_scsi_simulate(dev, scmd); |
4006 | ||
4007 | return 0; | |
baf4fdfa ML |
4008 | |
4009 | bad_cdb_len: | |
baf4fdfa | 4010 | scmd->result = DID_ERROR << 16; |
58bf201d | 4011 | scsi_done(scmd); |
baf4fdfa | 4012 | return 0; |
eb3f0f9c BK |
4013 | } |
4014 | ||
1da177e4 LT |
4015 | /** |
4016 | * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device | |
23e701e6 | 4017 | * @shost: SCSI host of command to be sent |
1da177e4 | 4018 | * @cmd: SCSI command to be sent |
1da177e4 LT |
4019 | * |
4020 | * In some cases, this function translates SCSI commands into | |
4021 | * ATA taskfiles, and queues the taskfiles to be sent to | |
4022 | * hardware. In other cases, this function simulates a | |
4023 | * SCSI device by evaluating and responding to certain | |
4024 | * SCSI commands. This creates the overall effect of | |
4025 | * ATA and ATAPI devices appearing as SCSI devices. | |
4026 | * | |
4027 | * LOCKING: | |
23e701e6 | 4028 | * ATA host lock |
1da177e4 LT |
4029 | * |
4030 | * RETURNS: | |
2115ea94 TH |
4031 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
4032 | * 0 otherwise. | |
1da177e4 | 4033 | */ |
23e701e6 | 4034 | int ata_scsi_queuecmd(struct Scsi_Host *shost, struct scsi_cmnd *cmd) |
1da177e4 LT |
4035 | { |
4036 | struct ata_port *ap; | |
4037 | struct ata_device *dev; | |
4038 | struct scsi_device *scsidev = cmd->device; | |
2115ea94 | 4039 | int rc = 0; |
23e701e6 | 4040 | unsigned long irq_flags; |
1da177e4 | 4041 | |
35bb94b1 | 4042 | ap = ata_shost_to_port(shost); |
005a5a06 | 4043 | |
23e701e6 | 4044 | spin_lock_irqsave(ap->lock, irq_flags); |
1da177e4 | 4045 | |
1da177e4 | 4046 | dev = ata_scsi_find_dev(ap, scsidev); |
eb3f0f9c | 4047 | if (likely(dev)) |
b27dcfb0 | 4048 | rc = __ata_scsi_queuecmd(cmd, dev); |
eb3f0f9c | 4049 | else { |
1da177e4 | 4050 | cmd->result = (DID_BAD_TARGET << 16); |
58bf201d | 4051 | scsi_done(cmd); |
1da177e4 LT |
4052 | } |
4053 | ||
23e701e6 JG |
4054 | spin_unlock_irqrestore(ap->lock, irq_flags); |
4055 | ||
2115ea94 | 4056 | return rc; |
1da177e4 | 4057 | } |
a52fbcfc | 4058 | EXPORT_SYMBOL_GPL(ata_scsi_queuecmd); |
1da177e4 LT |
4059 | |
4060 | /** | |
4061 | * ata_scsi_simulate - simulate SCSI command on ATA device | |
c893a3ae | 4062 | * @dev: the target device |
1da177e4 | 4063 | * @cmd: SCSI command being sent to device. |
1da177e4 LT |
4064 | * |
4065 | * Interprets and directly executes a select list of SCSI commands | |
4066 | * that can be handled internally. | |
4067 | * | |
4068 | * LOCKING: | |
cca3974e | 4069 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
4070 | */ |
4071 | ||
b27dcfb0 | 4072 | void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd) |
1da177e4 LT |
4073 | { |
4074 | struct ata_scsi_args args; | |
057ace5e | 4075 | const u8 *scsicmd = cmd->cmnd; |
45394145 | 4076 | u8 tmp8; |
1da177e4 | 4077 | |
9a3dccc4 TH |
4078 | args.dev = dev; |
4079 | args.id = dev->id; | |
1da177e4 | 4080 | args.cmd = cmd; |
1da177e4 LT |
4081 | |
4082 | switch(scsicmd[0]) { | |
2dcb407e | 4083 | case INQUIRY: |
bcfc867d | 4084 | if (scsicmd[1] & 2) /* is CmdDt set? */ |
8fc6c065 | 4085 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e JG |
4086 | else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */ |
4087 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std); | |
4088 | else switch (scsicmd[2]) { | |
4089 | case 0x00: | |
4090 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00); | |
1da177e4 | 4091 | break; |
2dcb407e JG |
4092 | case 0x80: |
4093 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80); | |
1da177e4 | 4094 | break; |
2dcb407e JG |
4095 | case 0x83: |
4096 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83); | |
1da177e4 | 4097 | break; |
2dcb407e JG |
4098 | case 0x89: |
4099 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89); | |
4100 | break; | |
18f0f978 CH |
4101 | case 0xb0: |
4102 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b0); | |
4103 | break; | |
1e9dbc92 MW |
4104 | case 0xb1: |
4105 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1); | |
4106 | break; | |
02e0a604 MP |
4107 | case 0xb2: |
4108 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b2); | |
4109 | break; | |
6d1003ae | 4110 | case 0xb6: |
fe22e1c2 | 4111 | if (dev->flags & ATA_DFLAG_ZAC) |
6d1003ae | 4112 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b6); |
fe22e1c2 DLM |
4113 | else |
4114 | ata_scsi_set_invalid_field(dev, cmd, 2, 0xff); | |
4115 | break; | |
4116 | case 0xb9: | |
4117 | if (dev->cpr_log) | |
4118 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b9); | |
4119 | else | |
4120 | ata_scsi_set_invalid_field(dev, cmd, 2, 0xff); | |
4121 | break; | |
2dcb407e | 4122 | default: |
8fc6c065 | 4123 | ata_scsi_set_invalid_field(dev, cmd, 2, 0xff); |
1da177e4 | 4124 | break; |
2dcb407e JG |
4125 | } |
4126 | break; | |
4127 | ||
4128 | case MODE_SENSE: | |
4129 | case MODE_SENSE_10: | |
4130 | ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense); | |
4131 | break; | |
4132 | ||
2dcb407e JG |
4133 | case READ_CAPACITY: |
4134 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); | |
4135 | break; | |
4136 | ||
eb846d9f | 4137 | case SERVICE_ACTION_IN_16: |
2dcb407e | 4138 | if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16) |
1da177e4 | 4139 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
2dcb407e | 4140 | else |
8fc6c065 | 4141 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e | 4142 | break; |
1da177e4 | 4143 | |
2dcb407e JG |
4144 | case REPORT_LUNS: |
4145 | ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns); | |
4146 | break; | |
1da177e4 | 4147 | |
2dcb407e | 4148 | case REQUEST_SENSE: |
06dbde5f | 4149 | ata_scsi_set_sense(dev, cmd, 0, 0, 0); |
2dcb407e | 4150 | break; |
1da177e4 | 4151 | |
2dcb407e JG |
4152 | /* if we reach this, then writeback caching is disabled, |
4153 | * turning this into a no-op. | |
4154 | */ | |
4155 | case SYNCHRONIZE_CACHE: | |
ea045fd3 | 4156 | case SYNCHRONIZE_CACHE_16: |
df561f66 | 4157 | fallthrough; |
2dcb407e JG |
4158 | |
4159 | /* no-op's, complete with success */ | |
4160 | case REZERO_UNIT: | |
4161 | case SEEK_6: | |
4162 | case SEEK_10: | |
4163 | case TEST_UNIT_READY: | |
2dcb407e | 4164 | break; |
45394145 | 4165 | |
2dcb407e JG |
4166 | case SEND_DIAGNOSTIC: |
4167 | tmp8 = scsicmd[1] & ~(1 << 3); | |
a0c0b0e9 | 4168 | if (tmp8 != 0x4 || scsicmd[3] || scsicmd[4]) |
8fc6c065 | 4169 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e | 4170 | break; |
1da177e4 | 4171 | |
7b203094 ST |
4172 | case MAINTENANCE_IN: |
4173 | if (scsicmd[1] == MI_REPORT_SUPPORTED_OPERATION_CODES) | |
4174 | ata_scsi_rbuf_fill(&args, ata_scsiop_maint_in); | |
4175 | else | |
8fc6c065 | 4176 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
7b203094 ST |
4177 | break; |
4178 | ||
2dcb407e JG |
4179 | /* all other commands */ |
4180 | default: | |
06dbde5f | 4181 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x20, 0x0); |
2dcb407e | 4182 | /* "Invalid command operation code" */ |
2dcb407e | 4183 | break; |
1da177e4 | 4184 | } |
8fc6c065 | 4185 | |
58bf201d | 4186 | scsi_done(cmd); |
1da177e4 LT |
4187 | } |
4188 | ||
25df73d9 | 4189 | int ata_scsi_add_hosts(struct ata_host *host, const struct scsi_host_template *sht) |
f3187195 TH |
4190 | { |
4191 | int i, rc; | |
4192 | ||
4193 | for (i = 0; i < host->n_ports; i++) { | |
4194 | struct ata_port *ap = host->ports[i]; | |
4195 | struct Scsi_Host *shost; | |
4196 | ||
4197 | rc = -ENOMEM; | |
4198 | shost = scsi_host_alloc(sht, sizeof(struct ata_port *)); | |
4199 | if (!shost) | |
4200 | goto err_alloc; | |
4201 | ||
9ee4f393 | 4202 | shost->eh_noresume = 1; |
f3187195 TH |
4203 | *(struct ata_port **)&shost->hostdata[0] = ap; |
4204 | ap->scsi_host = shost; | |
4205 | ||
d9027470 | 4206 | shost->transportt = ata_scsi_transport_template; |
f3187195 TH |
4207 | shost->unique_id = ap->print_id; |
4208 | shost->max_id = 16; | |
4209 | shost->max_lun = 1; | |
4210 | shost->max_channel = 1; | |
b1ffbf85 | 4211 | shost->max_cmd_len = 32; |
f3187195 | 4212 | |
31cc23b3 TH |
4213 | /* Schedule policy is determined by ->qc_defer() |
4214 | * callback and it needs to see every deferred qc. | |
4215 | * Set host_blocked to 1 to prevent SCSI midlayer from | |
4216 | * automatically deferring requests. | |
4217 | */ | |
4218 | shost->max_host_blocked = 1; | |
4219 | ||
1d72f7ae | 4220 | rc = scsi_add_host_with_dma(shost, &ap->tdev, ap->host->dev); |
f3187195 | 4221 | if (rc) |
1d72f7ae | 4222 | goto err_alloc; |
f3187195 TH |
4223 | } |
4224 | ||
4225 | return 0; | |
4226 | ||
f3187195 TH |
4227 | err_alloc: |
4228 | while (--i >= 0) { | |
4229 | struct Scsi_Host *shost = host->ports[i]->scsi_host; | |
4230 | ||
1d72f7ae | 4231 | /* scsi_host_put() is in ata_devres_release() */ |
f3187195 | 4232 | scsi_remove_host(shost); |
f3187195 TH |
4233 | } |
4234 | return rc; | |
4235 | } | |
4236 | ||
45b8084f LW |
4237 | #ifdef CONFIG_OF |
4238 | static void ata_scsi_assign_ofnode(struct ata_device *dev, struct ata_port *ap) | |
4239 | { | |
4240 | struct scsi_device *sdev = dev->sdev; | |
4241 | struct device *d = ap->host->dev; | |
4242 | struct device_node *np = d->of_node; | |
4243 | struct device_node *child; | |
4244 | ||
4245 | for_each_available_child_of_node(np, child) { | |
4246 | int ret; | |
4247 | u32 val; | |
4248 | ||
4249 | ret = of_property_read_u32(child, "reg", &val); | |
4250 | if (ret) | |
4251 | continue; | |
4252 | if (val == dev->devno) { | |
4253 | dev_dbg(d, "found matching device node\n"); | |
4254 | sdev->sdev_gendev.of_node = child; | |
4255 | return; | |
4256 | } | |
4257 | } | |
4258 | } | |
4259 | #else | |
4260 | static void ata_scsi_assign_ofnode(struct ata_device *dev, struct ata_port *ap) | |
4261 | { | |
4262 | } | |
4263 | #endif | |
4264 | ||
1ae46317 | 4265 | void ata_scsi_scan_host(struct ata_port *ap, int sync) |
644dd0cc | 4266 | { |
1ae46317 TH |
4267 | int tries = 5; |
4268 | struct ata_device *last_failed_dev = NULL; | |
41bda9c9 | 4269 | struct ata_link *link; |
1ae46317 | 4270 | struct ata_device *dev; |
644dd0cc | 4271 | |
1ae46317 | 4272 | repeat: |
1eca4365 TH |
4273 | ata_for_each_link(link, ap, EDGE) { |
4274 | ata_for_each_dev(dev, link, ENABLED) { | |
41bda9c9 TH |
4275 | struct scsi_device *sdev; |
4276 | int channel = 0, id = 0; | |
3edebac4 | 4277 | |
1eca4365 | 4278 | if (dev->sdev) |
41bda9c9 | 4279 | continue; |
3f19ee8c | 4280 | |
41bda9c9 TH |
4281 | if (ata_is_host_link(link)) |
4282 | id = dev->devno; | |
4283 | else | |
4284 | channel = link->pmp; | |
4285 | ||
4286 | sdev = __scsi_add_device(ap->scsi_host, channel, id, 0, | |
4287 | NULL); | |
4288 | if (!IS_ERR(sdev)) { | |
4289 | dev->sdev = sdev; | |
45b8084f | 4290 | ata_scsi_assign_ofnode(dev, ap); |
41bda9c9 | 4291 | scsi_device_put(sdev); |
295124dc GG |
4292 | } else { |
4293 | dev->sdev = NULL; | |
41bda9c9 | 4294 | } |
3edebac4 | 4295 | } |
3f19ee8c | 4296 | } |
1ae46317 TH |
4297 | |
4298 | /* If we scanned while EH was in progress or allocation | |
4299 | * failure occurred, scan would have failed silently. Check | |
4300 | * whether all devices are attached. | |
4301 | */ | |
1eca4365 TH |
4302 | ata_for_each_link(link, ap, EDGE) { |
4303 | ata_for_each_dev(dev, link, ENABLED) { | |
4304 | if (!dev->sdev) | |
41bda9c9 TH |
4305 | goto exit_loop; |
4306 | } | |
1ae46317 | 4307 | } |
41bda9c9 TH |
4308 | exit_loop: |
4309 | if (!link) | |
1ae46317 TH |
4310 | return; |
4311 | ||
4312 | /* we're missing some SCSI devices */ | |
4313 | if (sync) { | |
4314 | /* If caller requested synchrnous scan && we've made | |
4315 | * any progress, sleep briefly and repeat. | |
4316 | */ | |
4317 | if (dev != last_failed_dev) { | |
4318 | msleep(100); | |
4319 | last_failed_dev = dev; | |
4320 | goto repeat; | |
4321 | } | |
4322 | ||
4323 | /* We might be failing to detect boot device, give it | |
4324 | * a few more chances. | |
4325 | */ | |
4326 | if (--tries) { | |
4327 | msleep(100); | |
4328 | goto repeat; | |
4329 | } | |
4330 | ||
a9a79dfe JP |
4331 | ata_port_err(ap, |
4332 | "WARNING: synchronous SCSI scan failed without making any progress, switching to async\n"); | |
1ae46317 TH |
4333 | } |
4334 | ||
ad72cf98 | 4335 | queue_delayed_work(system_long_wq, &ap->hotplug_task, |
1ae46317 | 4336 | round_jiffies_relative(HZ)); |
644dd0cc | 4337 | } |
0ea035a3 TH |
4338 | |
4339 | /** | |
4340 | * ata_scsi_offline_dev - offline attached SCSI device | |
4341 | * @dev: ATA device to offline attached SCSI device for | |
4342 | * | |
4343 | * This function is called from ata_eh_hotplug() and responsible | |
4344 | * for taking the SCSI device attached to @dev offline. This | |
cca3974e | 4345 | * function is called with host lock which protects dev->sdev |
0ea035a3 TH |
4346 | * against clearing. |
4347 | * | |
4348 | * LOCKING: | |
cca3974e | 4349 | * spin_lock_irqsave(host lock) |
0ea035a3 TH |
4350 | * |
4351 | * RETURNS: | |
4352 | * 1 if attached SCSI device exists, 0 otherwise. | |
4353 | */ | |
4354 | int ata_scsi_offline_dev(struct ata_device *dev) | |
4355 | { | |
4356 | if (dev->sdev) { | |
4357 | scsi_device_set_state(dev->sdev, SDEV_OFFLINE); | |
4358 | return 1; | |
4359 | } | |
4360 | return 0; | |
4361 | } | |
580b2102 TH |
4362 | |
4363 | /** | |
4364 | * ata_scsi_remove_dev - remove attached SCSI device | |
4365 | * @dev: ATA device to remove attached SCSI device for | |
4366 | * | |
4367 | * This function is called from ata_eh_scsi_hotplug() and | |
4368 | * responsible for removing the SCSI device attached to @dev. | |
4369 | * | |
4370 | * LOCKING: | |
4371 | * Kernel thread context (may sleep). | |
4372 | */ | |
4373 | static void ata_scsi_remove_dev(struct ata_device *dev) | |
4374 | { | |
9af5c9c9 | 4375 | struct ata_port *ap = dev->link->ap; |
580b2102 TH |
4376 | struct scsi_device *sdev; |
4377 | unsigned long flags; | |
4378 | ||
4379 | /* Alas, we need to grab scan_mutex to ensure SCSI device | |
4380 | * state doesn't change underneath us and thus | |
4381 | * scsi_device_get() always succeeds. The mutex locking can | |
4382 | * be removed if there is __scsi_device_get() interface which | |
4383 | * increments reference counts regardless of device state. | |
4384 | */ | |
cca3974e | 4385 | mutex_lock(&ap->scsi_host->scan_mutex); |
ba6a1308 | 4386 | spin_lock_irqsave(ap->lock, flags); |
580b2102 | 4387 | |
cca3974e | 4388 | /* clearing dev->sdev is protected by host lock */ |
580b2102 TH |
4389 | sdev = dev->sdev; |
4390 | dev->sdev = NULL; | |
4391 | ||
4392 | if (sdev) { | |
4393 | /* If user initiated unplug races with us, sdev can go | |
cca3974e | 4394 | * away underneath us after the host lock and |
580b2102 TH |
4395 | * scan_mutex are released. Hold onto it. |
4396 | */ | |
4397 | if (scsi_device_get(sdev) == 0) { | |
4398 | /* The following ensures the attached sdev is | |
4399 | * offline on return from ata_scsi_offline_dev() | |
4400 | * regardless it wins or loses the race | |
4401 | * against this function. | |
4402 | */ | |
4403 | scsi_device_set_state(sdev, SDEV_OFFLINE); | |
4404 | } else { | |
4405 | WARN_ON(1); | |
4406 | sdev = NULL; | |
4407 | } | |
4408 | } | |
4409 | ||
ba6a1308 | 4410 | spin_unlock_irqrestore(ap->lock, flags); |
cca3974e | 4411 | mutex_unlock(&ap->scsi_host->scan_mutex); |
580b2102 TH |
4412 | |
4413 | if (sdev) { | |
a9a79dfe JP |
4414 | ata_dev_info(dev, "detaching (SCSI %s)\n", |
4415 | dev_name(&sdev->sdev_gendev)); | |
580b2102 TH |
4416 | |
4417 | scsi_remove_device(sdev); | |
4418 | scsi_device_put(sdev); | |
4419 | } | |
4420 | } | |
4421 | ||
41bda9c9 TH |
4422 | static void ata_scsi_handle_link_detach(struct ata_link *link) |
4423 | { | |
4424 | struct ata_port *ap = link->ap; | |
4425 | struct ata_device *dev; | |
4426 | ||
1eca4365 | 4427 | ata_for_each_dev(dev, link, ALL) { |
41bda9c9 TH |
4428 | unsigned long flags; |
4429 | ||
4430 | if (!(dev->flags & ATA_DFLAG_DETACHED)) | |
4431 | continue; | |
4432 | ||
4433 | spin_lock_irqsave(ap->lock, flags); | |
4434 | dev->flags &= ~ATA_DFLAG_DETACHED; | |
4435 | spin_unlock_irqrestore(ap->lock, flags); | |
4436 | ||
f1bc1e4c AL |
4437 | if (zpodd_dev_enabled(dev)) |
4438 | zpodd_exit(dev); | |
4439 | ||
41bda9c9 TH |
4440 | ata_scsi_remove_dev(dev); |
4441 | } | |
4442 | } | |
4443 | ||
2f294968 KCA |
4444 | /** |
4445 | * ata_scsi_media_change_notify - send media change event | |
c5d0e6a0 | 4446 | * @dev: Pointer to the disk device with media change event |
2f294968 KCA |
4447 | * |
4448 | * Tell the block layer to send a media change notification | |
4449 | * event. | |
4450 | * | |
4451 | * LOCKING: | |
854c73a2 | 4452 | * spin_lock_irqsave(host lock) |
2f294968 | 4453 | */ |
854c73a2 | 4454 | void ata_scsi_media_change_notify(struct ata_device *dev) |
2f294968 | 4455 | { |
854c73a2 | 4456 | if (dev->sdev) |
f26792d5 JG |
4457 | sdev_evt_send_simple(dev->sdev, SDEV_EVT_MEDIA_CHANGE, |
4458 | GFP_ATOMIC); | |
2f294968 | 4459 | } |
2f294968 | 4460 | |
580b2102 TH |
4461 | /** |
4462 | * ata_scsi_hotplug - SCSI part of hotplug | |
65f27f38 | 4463 | * @work: Pointer to ATA port to perform SCSI hotplug on |
580b2102 TH |
4464 | * |
4465 | * Perform SCSI part of hotplug. It's executed from a separate | |
4466 | * workqueue after EH completes. This is necessary because SCSI | |
4467 | * hot plugging requires working EH and hot unplugging is | |
4468 | * synchronized with hot plugging with a mutex. | |
4469 | * | |
4470 | * LOCKING: | |
4471 | * Kernel thread context (may sleep). | |
4472 | */ | |
65f27f38 | 4473 | void ata_scsi_hotplug(struct work_struct *work) |
580b2102 | 4474 | { |
65f27f38 DH |
4475 | struct ata_port *ap = |
4476 | container_of(work, struct ata_port, hotplug_task.work); | |
41bda9c9 | 4477 | int i; |
580b2102 | 4478 | |
1fe9fb71 | 4479 | if (ap->pflags & ATA_PFLAG_UNLOADING) |
580b2102 | 4480 | return; |
580b2102 | 4481 | |
ad72cf98 | 4482 | mutex_lock(&ap->scsi_scan_mutex); |
580b2102 | 4483 | |
41bda9c9 TH |
4484 | /* Unplug detached devices. We cannot use link iterator here |
4485 | * because PMP links have to be scanned even if PMP is | |
4486 | * currently not attached. Iterate manually. | |
4487 | */ | |
4488 | ata_scsi_handle_link_detach(&ap->link); | |
4489 | if (ap->pmp_link) | |
4490 | for (i = 0; i < SATA_PMP_MAX_PORTS; i++) | |
4491 | ata_scsi_handle_link_detach(&ap->pmp_link[i]); | |
580b2102 TH |
4492 | |
4493 | /* scan for new ones */ | |
1ae46317 | 4494 | ata_scsi_scan_host(ap, 0); |
580b2102 | 4495 | |
ad72cf98 | 4496 | mutex_unlock(&ap->scsi_scan_mutex); |
580b2102 | 4497 | } |
83c47bcb TH |
4498 | |
4499 | /** | |
4500 | * ata_scsi_user_scan - indication for user-initiated bus scan | |
4501 | * @shost: SCSI host to scan | |
4502 | * @channel: Channel to scan | |
4503 | * @id: ID to scan | |
4504 | * @lun: LUN to scan | |
4505 | * | |
4506 | * This function is called when user explicitly requests bus | |
4507 | * scan. Set probe pending flag and invoke EH. | |
4508 | * | |
4509 | * LOCKING: | |
4510 | * SCSI layer (we don't care) | |
4511 | * | |
4512 | * RETURNS: | |
4513 | * Zero. | |
4514 | */ | |
d9027470 | 4515 | int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, |
9cb78c16 | 4516 | unsigned int id, u64 lun) |
83c47bcb TH |
4517 | { |
4518 | struct ata_port *ap = ata_shost_to_port(shost); | |
4519 | unsigned long flags; | |
41bda9c9 | 4520 | int devno, rc = 0; |
83c47bcb TH |
4521 | |
4522 | if (!ap->ops->error_handler) | |
4523 | return -EOPNOTSUPP; | |
4524 | ||
41bda9c9 | 4525 | if (lun != SCAN_WILD_CARD && lun) |
83c47bcb TH |
4526 | return -EINVAL; |
4527 | ||
071f44b1 | 4528 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
4529 | if (channel != SCAN_WILD_CARD && channel) |
4530 | return -EINVAL; | |
4531 | devno = id; | |
4532 | } else { | |
4533 | if (id != SCAN_WILD_CARD && id) | |
4534 | return -EINVAL; | |
4535 | devno = channel; | |
4536 | } | |
4537 | ||
ba6a1308 | 4538 | spin_lock_irqsave(ap->lock, flags); |
83c47bcb | 4539 | |
41bda9c9 TH |
4540 | if (devno == SCAN_WILD_CARD) { |
4541 | struct ata_link *link; | |
4542 | ||
1eca4365 | 4543 | ata_for_each_link(link, ap, EDGE) { |
41bda9c9 | 4544 | struct ata_eh_info *ehi = &link->eh_info; |
b558eddd | 4545 | ehi->probe_mask |= ATA_ALL_DEVICES; |
cf480626 | 4546 | ehi->action |= ATA_EH_RESET; |
41bda9c9 | 4547 | } |
83c47bcb | 4548 | } else { |
41bda9c9 | 4549 | struct ata_device *dev = ata_find_dev(ap, devno); |
83c47bcb TH |
4550 | |
4551 | if (dev) { | |
41bda9c9 | 4552 | struct ata_eh_info *ehi = &dev->link->eh_info; |
9af5c9c9 | 4553 | ehi->probe_mask |= 1 << dev->devno; |
cf480626 | 4554 | ehi->action |= ATA_EH_RESET; |
83c47bcb TH |
4555 | } else |
4556 | rc = -EINVAL; | |
4557 | } | |
4558 | ||
309afcb5 | 4559 | if (rc == 0) { |
83c47bcb | 4560 | ata_port_schedule_eh(ap); |
309afcb5 TH |
4561 | spin_unlock_irqrestore(ap->lock, flags); |
4562 | ata_port_wait_eh(ap); | |
4563 | } else | |
4564 | spin_unlock_irqrestore(ap->lock, flags); | |
83c47bcb TH |
4565 | |
4566 | return rc; | |
4567 | } | |
3057ac3c | 4568 | |
4569 | /** | |
d0171269 | 4570 | * ata_scsi_dev_rescan - initiate scsi_rescan_device() |
65f27f38 | 4571 | * @work: Pointer to ATA port to perform scsi_rescan_device() |
3057ac3c | 4572 | * |
d0171269 | 4573 | * After ATA pass thru (SAT) commands are executed successfully, |
ad72cf98 | 4574 | * libata need to propagate the changes to SCSI layer. |
3057ac3c | 4575 | * |
d0171269 TH |
4576 | * LOCKING: |
4577 | * Kernel thread context (may sleep). | |
3057ac3c | 4578 | */ |
65f27f38 | 4579 | void ata_scsi_dev_rescan(struct work_struct *work) |
3057ac3c | 4580 | { |
65f27f38 DH |
4581 | struct ata_port *ap = |
4582 | container_of(work, struct ata_port, scsi_rescan_task); | |
41bda9c9 | 4583 | struct ata_link *link; |
f58229f8 | 4584 | struct ata_device *dev; |
f84e7e41 | 4585 | unsigned long flags; |
3057ac3c | 4586 | |
ad72cf98 | 4587 | mutex_lock(&ap->scsi_scan_mutex); |
f84e7e41 TH |
4588 | spin_lock_irqsave(ap->lock, flags); |
4589 | ||
1eca4365 TH |
4590 | ata_for_each_link(link, ap, EDGE) { |
4591 | ata_for_each_dev(dev, link, ENABLED) { | |
41bda9c9 | 4592 | struct scsi_device *sdev = dev->sdev; |
3057ac3c | 4593 | |
1eca4365 | 4594 | if (!sdev) |
41bda9c9 TH |
4595 | continue; |
4596 | if (scsi_device_get(sdev)) | |
4597 | continue; | |
f84e7e41 | 4598 | |
41bda9c9 TH |
4599 | spin_unlock_irqrestore(ap->lock, flags); |
4600 | scsi_rescan_device(&(sdev->sdev_gendev)); | |
4601 | scsi_device_put(sdev); | |
4602 | spin_lock_irqsave(ap->lock, flags); | |
4603 | } | |
3057ac3c | 4604 | } |
f84e7e41 TH |
4605 | |
4606 | spin_unlock_irqrestore(ap->lock, flags); | |
ad72cf98 | 4607 | mutex_unlock(&ap->scsi_scan_mutex); |
3057ac3c | 4608 | } |