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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 | ||
124 | return rc ? rc : snprintf(buf, 20, "%u\n", msecs); | |
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 | ||
06dbde5f HR |
191 | void ata_scsi_set_sense(struct ata_device *dev, struct scsi_cmnd *cmd, |
192 | u8 sk, u8 asc, u8 ascq) | |
f0761be3 | 193 | { |
06dbde5f HR |
194 | bool d_sense = (dev->flags & ATA_DFLAG_D_SENSE); |
195 | ||
5b01e4b9 HR |
196 | if (!cmd) |
197 | return; | |
198 | ||
f0761be3 TH |
199 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
200 | ||
06dbde5f | 201 | scsi_build_sense_buffer(d_sense, cmd->sense_buffer, sk, asc, ascq); |
f0761be3 TH |
202 | } |
203 | ||
492bf621 HR |
204 | void ata_scsi_set_sense_information(struct ata_device *dev, |
205 | struct scsi_cmnd *cmd, | |
206 | const struct ata_taskfile *tf) | |
207 | { | |
208 | u64 information; | |
209 | ||
210 | if (!cmd) | |
211 | return; | |
212 | ||
213 | information = ata_tf_read_block(tf, dev); | |
214 | if (information == U64_MAX) | |
215 | return; | |
216 | ||
217 | scsi_set_sense_information(cmd->sense_buffer, | |
218 | SCSI_SENSE_BUFFERSIZE, information); | |
219 | } | |
220 | ||
bcfc867d | 221 | static void ata_scsi_set_invalid_field(struct ata_device *dev, |
0df10b84 | 222 | struct scsi_cmnd *cmd, u16 field, u8 bit) |
bcfc867d HR |
223 | { |
224 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x24, 0x0); | |
8554e5e1 | 225 | /* "Invalid field in CDB" */ |
bcfc867d | 226 | scsi_set_sense_field_pointer(cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE, |
0df10b84 | 227 | field, bit, 1); |
bcfc867d HR |
228 | } |
229 | ||
7780081c HR |
230 | static void ata_scsi_set_invalid_parameter(struct ata_device *dev, |
231 | struct scsi_cmnd *cmd, u16 field) | |
232 | { | |
233 | /* "Invalid field in parameter list" */ | |
234 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x26, 0x0); | |
235 | scsi_set_sense_field_pointer(cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE, | |
236 | field, 0xff, 0); | |
f0761be3 TH |
237 | } |
238 | ||
45fabbb7 EO |
239 | struct device_attribute *ata_common_sdev_attrs[] = { |
240 | &dev_attr_unload_heads, | |
241 | NULL | |
242 | }; | |
243 | EXPORT_SYMBOL_GPL(ata_common_sdev_attrs); | |
244 | ||
1da177e4 LT |
245 | /** |
246 | * ata_std_bios_param - generic bios head/sector/cylinder calculator used by sd. | |
247 | * @sdev: SCSI device for which BIOS geometry is to be determined | |
248 | * @bdev: block device associated with @sdev | |
249 | * @capacity: capacity of SCSI device | |
250 | * @geom: location to which geometry will be output | |
251 | * | |
252 | * Generic bios head/sector/cylinder calculator | |
253 | * used by sd. Most BIOSes nowadays expect a XXX/255/16 (CHS) | |
254 | * mapping. Some situations may arise where the disk is not | |
255 | * bootable if this is not used. | |
256 | * | |
257 | * LOCKING: | |
258 | * Defined by the SCSI layer. We don't really care. | |
259 | * | |
260 | * RETURNS: | |
261 | * Zero. | |
262 | */ | |
263 | int ata_std_bios_param(struct scsi_device *sdev, struct block_device *bdev, | |
264 | sector_t capacity, int geom[]) | |
265 | { | |
266 | geom[0] = 255; | |
267 | geom[1] = 63; | |
268 | sector_div(capacity, 255*63); | |
269 | geom[2] = capacity; | |
270 | ||
271 | return 0; | |
272 | } | |
a52fbcfc | 273 | EXPORT_SYMBOL_GPL(ata_std_bios_param); |
1da177e4 | 274 | |
d8d9129e TH |
275 | /** |
276 | * ata_scsi_unlock_native_capacity - unlock native capacity | |
277 | * @sdev: SCSI device to adjust device capacity for | |
278 | * | |
279 | * This function is called if a partition on @sdev extends beyond | |
280 | * the end of the device. It requests EH to unlock HPA. | |
281 | * | |
282 | * LOCKING: | |
283 | * Defined by the SCSI layer. Might sleep. | |
284 | */ | |
285 | void ata_scsi_unlock_native_capacity(struct scsi_device *sdev) | |
286 | { | |
287 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
288 | struct ata_device *dev; | |
289 | unsigned long flags; | |
290 | ||
291 | spin_lock_irqsave(ap->lock, flags); | |
292 | ||
293 | dev = ata_scsi_find_dev(ap, sdev); | |
294 | if (dev && dev->n_sectors < dev->n_native_sectors) { | |
295 | dev->flags |= ATA_DFLAG_UNLOCK_HPA; | |
296 | dev->link->eh_info.action |= ATA_EH_RESET; | |
297 | ata_port_schedule_eh(ap); | |
298 | } | |
299 | ||
300 | spin_unlock_irqrestore(ap->lock, flags); | |
301 | ata_port_wait_eh(ap); | |
302 | } | |
a52fbcfc | 303 | EXPORT_SYMBOL_GPL(ata_scsi_unlock_native_capacity); |
d8d9129e | 304 | |
5924b74c TH |
305 | /** |
306 | * ata_get_identity - Handler for HDIO_GET_IDENTITY ioctl | |
5eb66fe0 | 307 | * @ap: target port |
5924b74c TH |
308 | * @sdev: SCSI device to get identify data for |
309 | * @arg: User buffer area for identify data | |
310 | * | |
311 | * LOCKING: | |
312 | * Defined by the SCSI layer. We don't really care. | |
313 | * | |
314 | * RETURNS: | |
315 | * Zero on success, negative errno on error. | |
316 | */ | |
94be9a58 JG |
317 | static int ata_get_identity(struct ata_port *ap, struct scsi_device *sdev, |
318 | void __user *arg) | |
5924b74c | 319 | { |
5924b74c TH |
320 | struct ata_device *dev = ata_scsi_find_dev(ap, sdev); |
321 | u16 __user *dst = arg; | |
322 | char buf[40]; | |
323 | ||
324 | if (!dev) | |
325 | return -ENOMSG; | |
326 | ||
327 | if (copy_to_user(dst, dev->id, ATA_ID_WORDS * sizeof(u16))) | |
328 | return -EFAULT; | |
329 | ||
330 | ata_id_string(dev->id, buf, ATA_ID_PROD, ATA_ID_PROD_LEN); | |
331 | if (copy_to_user(dst + ATA_ID_PROD, buf, ATA_ID_PROD_LEN)) | |
332 | return -EFAULT; | |
333 | ||
334 | ata_id_string(dev->id, buf, ATA_ID_FW_REV, ATA_ID_FW_REV_LEN); | |
335 | if (copy_to_user(dst + ATA_ID_FW_REV, buf, ATA_ID_FW_REV_LEN)) | |
336 | return -EFAULT; | |
337 | ||
338 | ata_id_string(dev->id, buf, ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
339 | if (copy_to_user(dst + ATA_ID_SERNO, buf, ATA_ID_SERNO_LEN)) | |
340 | return -EFAULT; | |
341 | ||
342 | return 0; | |
343 | } | |
344 | ||
b095518e JG |
345 | /** |
346 | * ata_cmd_ioctl - Handler for HDIO_DRIVE_CMD ioctl | |
8e8b77dd | 347 | * @scsidev: Device to which we are issuing command |
b095518e JG |
348 | * @arg: User provided data for issuing command |
349 | * | |
350 | * LOCKING: | |
351 | * Defined by the SCSI layer. We don't really care. | |
352 | * | |
353 | * RETURNS: | |
354 | * Zero on success, negative errno on error. | |
355 | */ | |
b095518e JG |
356 | int ata_cmd_ioctl(struct scsi_device *scsidev, void __user *arg) |
357 | { | |
358 | int rc = 0; | |
429296cc | 359 | u8 sensebuf[SCSI_SENSE_BUFFERSIZE]; |
b095518e | 360 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
429296cc | 361 | u8 args[4], *argbuf = NULL; |
b095518e | 362 | int argsize = 0; |
85837ebd | 363 | enum dma_data_direction data_dir; |
76aaf87b | 364 | struct scsi_sense_hdr sshdr; |
bbe1fe7e | 365 | int cmd_result; |
b095518e | 366 | |
c893a3ae | 367 | if (arg == NULL) |
b095518e JG |
368 | return -EINVAL; |
369 | ||
370 | if (copy_from_user(args, arg, sizeof(args))) | |
371 | return -EFAULT; | |
372 | ||
429296cc | 373 | memset(sensebuf, 0, sizeof(sensebuf)); |
b095518e JG |
374 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
375 | ||
376 | if (args[3]) { | |
295124dc | 377 | argsize = ATA_SECT_SIZE * args[3]; |
b095518e | 378 | argbuf = kmalloc(argsize, GFP_KERNEL); |
54dac83c JR |
379 | if (argbuf == NULL) { |
380 | rc = -ENOMEM; | |
381 | goto error; | |
382 | } | |
b095518e JG |
383 | |
384 | scsi_cmd[1] = (4 << 1); /* PIO Data-in */ | |
385 | scsi_cmd[2] = 0x0e; /* no off.line or cc, read from dev, | |
2dcb407e | 386 | block count in sector count field */ |
85837ebd | 387 | data_dir = DMA_FROM_DEVICE; |
b095518e JG |
388 | } else { |
389 | scsi_cmd[1] = (3 << 1); /* Non-data */ | |
bbe1fe7e | 390 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
85837ebd | 391 | data_dir = DMA_NONE; |
b095518e JG |
392 | } |
393 | ||
394 | scsi_cmd[0] = ATA_16; | |
395 | ||
396 | scsi_cmd[4] = args[2]; | |
a4f19040 | 397 | if (args[0] == ATA_CMD_SMART) { /* hack -- ide driver does this too */ |
b095518e JG |
398 | scsi_cmd[6] = args[3]; |
399 | scsi_cmd[8] = args[1]; | |
f355eece LW |
400 | scsi_cmd[10] = ATA_SMART_LBAM_PASS; |
401 | scsi_cmd[12] = ATA_SMART_LBAH_PASS; | |
b095518e JG |
402 | } else { |
403 | scsi_cmd[6] = args[1]; | |
404 | } | |
405 | scsi_cmd[14] = args[0]; | |
406 | ||
407 | /* Good values for timeout and retries? Values below | |
408 | from scsi_ioctl_send_command() for default case... */ | |
bbe1fe7e | 409 | cmd_result = scsi_execute(scsidev, scsi_cmd, data_dir, argbuf, argsize, |
76aaf87b | 410 | sensebuf, &sshdr, (10*HZ), 5, 0, 0, NULL); |
bbe1fe7e ET |
411 | |
412 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ | |
413 | u8 *desc = sensebuf + 8; | |
414 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ | |
415 | ||
416 | /* If we set cc then ATA pass-through will cause a | |
417 | * check condition even if no error. Filter that. */ | |
418 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { | |
6d3bfc7b KM |
419 | if (sshdr.sense_key == RECOVERED_ERROR && |
420 | sshdr.asc == 0 && sshdr.ascq == 0x1d) | |
bbe1fe7e ET |
421 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
422 | } | |
423 | ||
424 | /* Send userspace a few ATA registers (same as drivers/ide) */ | |
2dcb407e JG |
425 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ |
426 | desc[0] == 0x09) { /* code is "ATA Descriptor" */ | |
427 | args[0] = desc[13]; /* status */ | |
428 | args[1] = desc[3]; /* error */ | |
429 | args[2] = desc[5]; /* sector count (0:7) */ | |
bbe1fe7e ET |
430 | if (copy_to_user(arg, args, sizeof(args))) |
431 | rc = -EFAULT; | |
432 | } | |
433 | } | |
434 | ||
435 | ||
436 | if (cmd_result) { | |
b095518e JG |
437 | rc = -EIO; |
438 | goto error; | |
439 | } | |
440 | ||
b095518e | 441 | if ((argbuf) |
c893a3ae | 442 | && copy_to_user(arg + sizeof(args), argbuf, argsize)) |
b095518e JG |
443 | rc = -EFAULT; |
444 | error: | |
8f760780 | 445 | kfree(argbuf); |
b095518e JG |
446 | return rc; |
447 | } | |
448 | ||
449 | /** | |
450 | * ata_task_ioctl - Handler for HDIO_DRIVE_TASK ioctl | |
8e8b77dd | 451 | * @scsidev: Device to which we are issuing command |
b095518e JG |
452 | * @arg: User provided data for issuing command |
453 | * | |
454 | * LOCKING: | |
455 | * Defined by the SCSI layer. We don't really care. | |
456 | * | |
457 | * RETURNS: | |
458 | * Zero on success, negative errno on error. | |
459 | */ | |
460 | int ata_task_ioctl(struct scsi_device *scsidev, void __user *arg) | |
461 | { | |
462 | int rc = 0; | |
429296cc | 463 | u8 sensebuf[SCSI_SENSE_BUFFERSIZE]; |
b095518e | 464 | u8 scsi_cmd[MAX_COMMAND_SIZE]; |
429296cc | 465 | u8 args[7]; |
76aaf87b | 466 | struct scsi_sense_hdr sshdr; |
af068bd1 | 467 | int cmd_result; |
b095518e | 468 | |
c893a3ae | 469 | if (arg == NULL) |
b095518e JG |
470 | return -EINVAL; |
471 | ||
472 | if (copy_from_user(args, arg, sizeof(args))) | |
473 | return -EFAULT; | |
474 | ||
429296cc | 475 | memset(sensebuf, 0, sizeof(sensebuf)); |
b095518e JG |
476 | memset(scsi_cmd, 0, sizeof(scsi_cmd)); |
477 | scsi_cmd[0] = ATA_16; | |
478 | scsi_cmd[1] = (3 << 1); /* Non-data */ | |
af068bd1 | 479 | scsi_cmd[2] = 0x20; /* cc but no off.line or data xfer */ |
b095518e JG |
480 | scsi_cmd[4] = args[1]; |
481 | scsi_cmd[6] = args[2]; | |
482 | scsi_cmd[8] = args[3]; | |
483 | scsi_cmd[10] = args[4]; | |
484 | scsi_cmd[12] = args[5]; | |
277239f2 | 485 | scsi_cmd[13] = args[6] & 0x4f; |
b095518e JG |
486 | scsi_cmd[14] = args[0]; |
487 | ||
b095518e | 488 | /* Good values for timeout and retries? Values below |
2e9edbf8 | 489 | from scsi_ioctl_send_command() for default case... */ |
af068bd1 | 490 | cmd_result = scsi_execute(scsidev, scsi_cmd, DMA_NONE, NULL, 0, |
76aaf87b | 491 | sensebuf, &sshdr, (10*HZ), 5, 0, 0, NULL); |
af068bd1 DM |
492 | |
493 | if (driver_byte(cmd_result) == DRIVER_SENSE) {/* sense data available */ | |
494 | u8 *desc = sensebuf + 8; | |
495 | cmd_result &= ~(0xFF<<24); /* DRIVER_SENSE is not an error */ | |
496 | ||
497 | /* If we set cc then ATA pass-through will cause a | |
498 | * check condition even if no error. Filter that. */ | |
499 | if (cmd_result & SAM_STAT_CHECK_CONDITION) { | |
6d3bfc7b KM |
500 | if (sshdr.sense_key == RECOVERED_ERROR && |
501 | sshdr.asc == 0 && sshdr.ascq == 0x1d) | |
af068bd1 DM |
502 | cmd_result &= ~SAM_STAT_CHECK_CONDITION; |
503 | } | |
504 | ||
505 | /* Send userspace ATA registers */ | |
506 | if (sensebuf[0] == 0x72 && /* format is "descriptor" */ | |
507 | desc[0] == 0x09) {/* code is "ATA Descriptor" */ | |
508 | args[0] = desc[13]; /* status */ | |
509 | args[1] = desc[3]; /* error */ | |
510 | args[2] = desc[5]; /* sector count (0:7) */ | |
511 | args[3] = desc[7]; /* lbal */ | |
512 | args[4] = desc[9]; /* lbam */ | |
513 | args[5] = desc[11]; /* lbah */ | |
514 | args[6] = desc[12]; /* select */ | |
515 | if (copy_to_user(arg, args, sizeof(args))) | |
516 | rc = -EFAULT; | |
517 | } | |
518 | } | |
519 | ||
520 | if (cmd_result) { | |
b095518e | 521 | rc = -EIO; |
af068bd1 DM |
522 | goto error; |
523 | } | |
b095518e | 524 | |
af068bd1 | 525 | error: |
b095518e JG |
526 | return rc; |
527 | } | |
528 | ||
e3cf95dd AC |
529 | static int ata_ioc32(struct ata_port *ap) |
530 | { | |
531 | if (ap->flags & ATA_FLAG_PIO_DMA) | |
532 | return 1; | |
533 | if (ap->pflags & ATA_PFLAG_PIO32) | |
534 | return 1; | |
535 | return 0; | |
536 | } | |
537 | ||
75c0b0e1 AB |
538 | /* |
539 | * This handles both native and compat commands, so anything added | |
540 | * here must have a compatible argument, or check in_compat_syscall() | |
541 | */ | |
94be9a58 | 542 | int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev, |
6f4e626f | 543 | unsigned int cmd, void __user *arg) |
1da177e4 | 544 | { |
287e6611 AB |
545 | unsigned long val; |
546 | int rc = -EINVAL; | |
e3cf95dd | 547 | unsigned long flags; |
1da177e4 | 548 | |
1da177e4 | 549 | switch (cmd) { |
287e6611 | 550 | case HDIO_GET_32BIT: |
e3cf95dd AC |
551 | spin_lock_irqsave(ap->lock, flags); |
552 | val = ata_ioc32(ap); | |
553 | spin_unlock_irqrestore(ap->lock, flags); | |
75c0b0e1 AB |
554 | #ifdef CONFIG_COMPAT |
555 | if (in_compat_syscall()) | |
556 | return put_user(val, (compat_ulong_t __user *)arg); | |
557 | #endif | |
287e6611 | 558 | return put_user(val, (unsigned long __user *)arg); |
1da177e4 | 559 | |
287e6611 | 560 | case HDIO_SET_32BIT: |
1da177e4 | 561 | val = (unsigned long) arg; |
e3cf95dd AC |
562 | rc = 0; |
563 | spin_lock_irqsave(ap->lock, flags); | |
564 | if (ap->pflags & ATA_PFLAG_PIO32CHANGE) { | |
565 | if (val) | |
566 | ap->pflags |= ATA_PFLAG_PIO32; | |
567 | else | |
568 | ap->pflags &= ~ATA_PFLAG_PIO32; | |
569 | } else { | |
570 | if (val != ata_ioc32(ap)) | |
571 | rc = -EINVAL; | |
572 | } | |
573 | spin_unlock_irqrestore(ap->lock, flags); | |
574 | return rc; | |
1da177e4 | 575 | |
5924b74c | 576 | case HDIO_GET_IDENTITY: |
94be9a58 | 577 | return ata_get_identity(ap, scsidev, arg); |
5924b74c | 578 | |
b095518e JG |
579 | case HDIO_DRIVE_CMD: |
580 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
581 | return -EACCES; | |
582 | return ata_cmd_ioctl(scsidev, arg); | |
583 | ||
584 | case HDIO_DRIVE_TASK: | |
585 | if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO)) | |
586 | return -EACCES; | |
587 | return ata_task_ioctl(scsidev, arg); | |
588 | ||
1da177e4 LT |
589 | default: |
590 | rc = -ENOTTY; | |
591 | break; | |
592 | } | |
593 | ||
1da177e4 LT |
594 | return rc; |
595 | } | |
94be9a58 JG |
596 | EXPORT_SYMBOL_GPL(ata_sas_scsi_ioctl); |
597 | ||
6f4e626f NC |
598 | int ata_scsi_ioctl(struct scsi_device *scsidev, unsigned int cmd, |
599 | void __user *arg) | |
94be9a58 JG |
600 | { |
601 | return ata_sas_scsi_ioctl(ata_shost_to_port(scsidev->host), | |
602 | scsidev, cmd, arg); | |
603 | } | |
604 | EXPORT_SYMBOL_GPL(ata_scsi_ioctl); | |
1da177e4 LT |
605 | |
606 | /** | |
607 | * ata_scsi_qc_new - acquire new ata_queued_cmd reference | |
1da177e4 LT |
608 | * @dev: ATA device to which the new command is attached |
609 | * @cmd: SCSI command that originated this ATA command | |
1da177e4 LT |
610 | * |
611 | * Obtain a reference to an unused ata_queued_cmd structure, | |
612 | * which is the basic libata structure representing a single | |
613 | * ATA command sent to the hardware. | |
614 | * | |
615 | * If a command was available, fill in the SCSI-specific | |
616 | * portions of the structure with information on the | |
617 | * current command. | |
618 | * | |
619 | * LOCKING: | |
cca3974e | 620 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
621 | * |
622 | * RETURNS: | |
623 | * Command allocated, or %NULL if none available. | |
624 | */ | |
7102d230 | 625 | static struct ata_queued_cmd *ata_scsi_qc_new(struct ata_device *dev, |
b27dcfb0 | 626 | struct scsi_cmnd *cmd) |
1da177e4 LT |
627 | { |
628 | struct ata_queued_cmd *qc; | |
629 | ||
12cb5ce1 | 630 | qc = ata_qc_new_init(dev, cmd->request->tag); |
1da177e4 LT |
631 | if (qc) { |
632 | qc->scsicmd = cmd; | |
b27dcfb0 | 633 | qc->scsidone = cmd->scsi_done; |
1da177e4 | 634 | |
ff2aeb1e | 635 | qc->sg = scsi_sglist(cmd); |
7120165c | 636 | qc->n_elem = scsi_sg_count(cmd); |
7eb49509 DLM |
637 | |
638 | if (cmd->request->rq_flags & RQF_QUIET) | |
639 | qc->flags |= ATA_QCFLAG_QUIET; | |
1da177e4 LT |
640 | } else { |
641 | cmd->result = (DID_OK << 16) | (QUEUE_FULL << 1); | |
b27dcfb0 | 642 | cmd->scsi_done(cmd); |
1da177e4 LT |
643 | } |
644 | ||
645 | return qc; | |
646 | } | |
647 | ||
aacda375 TH |
648 | static void ata_qc_set_pc_nbytes(struct ata_queued_cmd *qc) |
649 | { | |
650 | struct scsi_cmnd *scmd = qc->scsicmd; | |
651 | ||
bdf8710d | 652 | qc->extrabytes = scmd->extra_len; |
aacda375 TH |
653 | qc->nbytes = scsi_bufflen(scmd) + qc->extrabytes; |
654 | } | |
655 | ||
b095518e JG |
656 | /** |
657 | * ata_dump_status - user friendly display of error info | |
658 | * @id: id of the port in question | |
659 | * @tf: ptr to filled out taskfile | |
660 | * | |
661 | * Decode and dump the ATA error/status registers for the user so | |
662 | * that they have some idea what really happened at the non | |
663 | * make-believe layer. | |
664 | * | |
665 | * LOCKING: | |
666 | * inherited from caller | |
667 | */ | |
7102d230 | 668 | static void ata_dump_status(unsigned id, struct ata_taskfile *tf) |
b095518e JG |
669 | { |
670 | u8 stat = tf->command, err = tf->feature; | |
671 | ||
6ef56325 | 672 | pr_warn("ata%u: status=0x%02x { ", id, stat); |
b095518e | 673 | if (stat & ATA_BUSY) { |
6ef56325 | 674 | pr_cont("Busy }\n"); /* Data is not valid in this case */ |
b095518e | 675 | } else { |
6ef56325 JP |
676 | if (stat & ATA_DRDY) pr_cont("DriveReady "); |
677 | if (stat & ATA_DF) pr_cont("DeviceFault "); | |
678 | if (stat & ATA_DSC) pr_cont("SeekComplete "); | |
679 | if (stat & ATA_DRQ) pr_cont("DataRequest "); | |
680 | if (stat & ATA_CORR) pr_cont("CorrectedError "); | |
681 | if (stat & ATA_SENSE) pr_cont("Sense "); | |
682 | if (stat & ATA_ERR) pr_cont("Error "); | |
683 | pr_cont("}\n"); | |
b095518e JG |
684 | |
685 | if (err) { | |
6ef56325 JP |
686 | pr_warn("ata%u: error=0x%02x { ", id, err); |
687 | if (err & ATA_ABORTED) pr_cont("DriveStatusError "); | |
1308d7f0 HR |
688 | if (err & ATA_ICRC) { |
689 | if (err & ATA_ABORTED) | |
6ef56325 JP |
690 | pr_cont("BadCRC "); |
691 | else pr_cont("Sector "); | |
b095518e | 692 | } |
6ef56325 JP |
693 | if (err & ATA_UNC) pr_cont("UncorrectableError "); |
694 | if (err & ATA_IDNF) pr_cont("SectorIdNotFound "); | |
695 | if (err & ATA_TRK0NF) pr_cont("TrackZeroNotFound "); | |
696 | if (err & ATA_AMNF) pr_cont("AddrMarkNotFound "); | |
697 | pr_cont("}\n"); | |
b095518e JG |
698 | } |
699 | } | |
700 | } | |
701 | ||
1da177e4 LT |
702 | /** |
703 | * ata_to_sense_error - convert ATA error to SCSI error | |
8e8b77dd | 704 | * @id: ATA device number |
1da177e4 | 705 | * @drv_stat: value contained in ATA status register |
b095518e JG |
706 | * @drv_err: value contained in ATA error register |
707 | * @sk: the sense key we'll fill out | |
708 | * @asc: the additional sense code we'll fill out | |
709 | * @ascq: the additional sense code qualifier we'll fill out | |
246619da | 710 | * @verbose: be verbose |
1da177e4 | 711 | * |
b095518e JG |
712 | * Converts an ATA error into a SCSI error. Fill out pointers to |
713 | * SK, ASC, and ASCQ bytes for later use in fixed or descriptor | |
714 | * format sense blocks. | |
1da177e4 LT |
715 | * |
716 | * LOCKING: | |
cca3974e | 717 | * spin_lock_irqsave(host lock) |
1da177e4 | 718 | */ |
7102d230 AB |
719 | static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, |
720 | u8 *asc, u8 *ascq, int verbose) | |
1da177e4 | 721 | { |
b095518e | 722 | int i; |
ffe75ef6 | 723 | |
1da177e4 | 724 | /* Based on the 3ware driver translation table */ |
98ac62de | 725 | static const unsigned char sense_table[][4] = { |
1da177e4 | 726 | /* BBD|ECC|ID|MAR */ |
8ae72044 HR |
727 | {0xd1, ABORTED_COMMAND, 0x00, 0x00}, |
728 | // Device busy Aborted command | |
1da177e4 | 729 | /* BBD|ECC|ID */ |
8ae72044 HR |
730 | {0xd0, ABORTED_COMMAND, 0x00, 0x00}, |
731 | // Device busy Aborted command | |
1da177e4 | 732 | /* ECC|MC|MARK */ |
8ae72044 HR |
733 | {0x61, HARDWARE_ERROR, 0x00, 0x00}, |
734 | // Device fault Hardware error | |
1da177e4 | 735 | /* ICRC|ABRT */ /* NB: ICRC & !ABRT is BBD */ |
8ae72044 HR |
736 | {0x84, ABORTED_COMMAND, 0x47, 0x00}, |
737 | // Data CRC error SCSI parity error | |
1da177e4 | 738 | /* MC|ID|ABRT|TRK0|MARK */ |
8ae72044 HR |
739 | {0x37, NOT_READY, 0x04, 0x00}, |
740 | // Unit offline Not ready | |
1da177e4 | 741 | /* MCR|MARK */ |
8ae72044 HR |
742 | {0x09, NOT_READY, 0x04, 0x00}, |
743 | // Unrecovered disk error Not ready | |
1da177e4 | 744 | /* Bad address mark */ |
8ae72044 HR |
745 | {0x01, MEDIUM_ERROR, 0x13, 0x00}, |
746 | // Address mark not found for data field | |
747 | /* TRK0 - Track 0 not found */ | |
748 | {0x02, HARDWARE_ERROR, 0x00, 0x00}, | |
749 | // Hardware error | |
78062c50 | 750 | /* Abort: 0x04 is not translated here, see below */ |
1da177e4 | 751 | /* Media change request */ |
8ae72044 HR |
752 | {0x08, NOT_READY, 0x04, 0x00}, |
753 | // FIXME: faking offline | |
754 | /* SRV/IDNF - ID not found */ | |
755 | {0x10, ILLEGAL_REQUEST, 0x21, 0x00}, | |
756 | // Logical address out of range | |
757 | /* MC - Media Changed */ | |
758 | {0x20, UNIT_ATTENTION, 0x28, 0x00}, | |
759 | // Not ready to ready change, medium may have changed | |
760 | /* ECC - Uncorrectable ECC error */ | |
761 | {0x40, MEDIUM_ERROR, 0x11, 0x04}, | |
762 | // Unrecovered read error | |
1da177e4 | 763 | /* BBD - block marked bad */ |
8ae72044 HR |
764 | {0x80, MEDIUM_ERROR, 0x11, 0x04}, |
765 | // Block marked bad Medium error, unrecovered read error | |
1da177e4 LT |
766 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
767 | }; | |
98ac62de | 768 | static const unsigned char stat_table[][4] = { |
1da177e4 | 769 | /* Must be first because BUSY means no other bits valid */ |
8ae72044 HR |
770 | {0x80, ABORTED_COMMAND, 0x47, 0x00}, |
771 | // Busy, fake parity for now | |
772 | {0x40, ILLEGAL_REQUEST, 0x21, 0x04}, | |
773 | // Device ready, unaligned write command | |
774 | {0x20, HARDWARE_ERROR, 0x44, 0x00}, | |
775 | // Device fault, internal target failure | |
776 | {0x08, ABORTED_COMMAND, 0x47, 0x00}, | |
777 | // Timed out in xfer, fake parity for now | |
778 | {0x04, RECOVERED_ERROR, 0x11, 0x00}, | |
779 | // Recovered ECC error Medium error, recovered | |
1da177e4 LT |
780 | {0xFF, 0xFF, 0xFF, 0xFF}, // END mark |
781 | }; | |
1da177e4 | 782 | |
1da177e4 LT |
783 | /* |
784 | * Is this an error we can process/parse | |
785 | */ | |
b095518e JG |
786 | if (drv_stat & ATA_BUSY) { |
787 | drv_err = 0; /* Ignore the err bits, they're invalid */ | |
1da177e4 | 788 | } |
b095518e JG |
789 | |
790 | if (drv_err) { | |
791 | /* Look for drv_err */ | |
792 | for (i = 0; sense_table[i][0] != 0xFF; i++) { | |
793 | /* Look for best matches first */ | |
2e9edbf8 | 794 | if ((sense_table[i][0] & drv_err) == |
b095518e JG |
795 | sense_table[i][0]) { |
796 | *sk = sense_table[i][1]; | |
797 | *asc = sense_table[i][2]; | |
798 | *ascq = sense_table[i][3]; | |
799 | goto translate_done; | |
800 | } | |
801 | } | |
1da177e4 | 802 | } |
b095518e | 803 | |
78062c50 GG |
804 | /* |
805 | * Fall back to interpreting status bits. Note that if the drv_err | |
806 | * has only the ABRT bit set, we decode drv_stat. ABRT by itself | |
807 | * is not descriptive enough. | |
808 | */ | |
b095518e JG |
809 | for (i = 0; stat_table[i][0] != 0xFF; i++) { |
810 | if (stat_table[i][0] & drv_stat) { | |
811 | *sk = stat_table[i][1]; | |
812 | *asc = stat_table[i][2]; | |
813 | *ascq = stat_table[i][3]; | |
814 | goto translate_done; | |
1da177e4 | 815 | } |
b095518e | 816 | } |
b095518e | 817 | |
78062c50 GG |
818 | /* |
819 | * We need a sensible error return here, which is tricky, and one | |
820 | * that won't cause people to do things like return a disk wrongly. | |
821 | */ | |
2d202024 AC |
822 | *sk = ABORTED_COMMAND; |
823 | *asc = 0x00; | |
824 | *ascq = 0x00; | |
b095518e JG |
825 | |
826 | translate_done: | |
246619da | 827 | if (verbose) |
6ef56325 | 828 | pr_err("ata%u: translated ATA stat/err 0x%02x/%02x to SCSI SK/ASC/ASCQ 0x%x/%02x/%02x\n", |
246619da | 829 | id, drv_stat, drv_err, *sk, *asc, *ascq); |
b095518e JG |
830 | return; |
831 | } | |
832 | ||
833 | /* | |
750426aa | 834 | * ata_gen_passthru_sense - Generate check condition sense block. |
b095518e JG |
835 | * @qc: Command that completed. |
836 | * | |
837 | * This function is specific to the ATA descriptor format sense | |
838 | * block specified for the ATA pass through commands. Regardless | |
839 | * of whether the command errored or not, return a sense | |
840 | * block. Copy all controller registers into the sense | |
84a9a8cd GG |
841 | * block. If there was no error, we get the request from an ATA |
842 | * passthrough command, so we use the following sense data: | |
843 | * sk = RECOVERED ERROR | |
844 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE | |
845 | * | |
b095518e JG |
846 | * |
847 | * LOCKING: | |
750426aa | 848 | * None. |
b095518e | 849 | */ |
750426aa | 850 | static void ata_gen_passthru_sense(struct ata_queued_cmd *qc) |
b095518e JG |
851 | { |
852 | struct scsi_cmnd *cmd = qc->scsicmd; | |
e61e0672 | 853 | struct ata_taskfile *tf = &qc->result_tf; |
b095518e JG |
854 | unsigned char *sb = cmd->sense_buffer; |
855 | unsigned char *desc = sb + 8; | |
246619da | 856 | int verbose = qc->ap->ops->error_handler == NULL; |
b525e773 | 857 | u8 sense_key, asc, ascq; |
b095518e JG |
858 | |
859 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); | |
860 | ||
0e5dec47 | 861 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
b095518e | 862 | |
b095518e JG |
863 | /* |
864 | * Use ata_to_sense_error() to map status register bits | |
865 | * onto sense key, asc & ascq. | |
866 | */ | |
058e55e1 TH |
867 | if (qc->err_mask || |
868 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { | |
44877b4e | 869 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, |
b525e773 | 870 | &sense_key, &asc, &ascq, verbose); |
06dbde5f | 871 | ata_scsi_set_sense(qc->dev, cmd, sense_key, asc, ascq); |
84a9a8cd | 872 | } else { |
11093cb1 HR |
873 | /* |
874 | * ATA PASS-THROUGH INFORMATION AVAILABLE | |
875 | * Always in descriptor format sense. | |
876 | */ | |
877 | scsi_build_sense_buffer(1, cmd->sense_buffer, | |
878 | RECOVERED_ERROR, 0, 0x1D); | |
1da177e4 LT |
879 | } |
880 | ||
11093cb1 HR |
881 | if ((cmd->sense_buffer[0] & 0x7f) >= 0x72) { |
882 | u8 len; | |
883 | ||
884 | /* descriptor format */ | |
885 | len = sb[7]; | |
886 | desc = (char *)scsi_sense_desc_find(sb, len + 8, 9); | |
887 | if (!desc) { | |
888 | if (SCSI_SENSE_BUFFERSIZE < len + 14) | |
889 | return; | |
890 | sb[7] = len + 14; | |
891 | desc = sb + 8 + len; | |
892 | } | |
893 | desc[0] = 9; | |
894 | desc[1] = 12; | |
895 | /* | |
896 | * Copy registers into sense buffer. | |
897 | */ | |
898 | desc[2] = 0x00; | |
899 | desc[3] = tf->feature; /* == error reg */ | |
900 | desc[5] = tf->nsect; | |
901 | desc[7] = tf->lbal; | |
902 | desc[9] = tf->lbam; | |
903 | desc[11] = tf->lbah; | |
904 | desc[12] = tf->device; | |
905 | desc[13] = tf->command; /* == status reg */ | |
b095518e | 906 | |
11093cb1 HR |
907 | /* |
908 | * Fill in Extend bit, and the high order bytes | |
909 | * if applicable. | |
910 | */ | |
911 | if (tf->flags & ATA_TFLAG_LBA48) { | |
912 | desc[2] |= 0x01; | |
913 | desc[4] = tf->hob_nsect; | |
914 | desc[6] = tf->hob_lbal; | |
915 | desc[8] = tf->hob_lbam; | |
916 | desc[10] = tf->hob_lbah; | |
917 | } | |
918 | } else { | |
919 | /* Fixed sense format */ | |
920 | desc[0] = tf->feature; | |
921 | desc[1] = tf->command; /* status */ | |
922 | desc[2] = tf->device; | |
923 | desc[3] = tf->nsect; | |
e0029dcb | 924 | desc[7] = 0; |
11093cb1 HR |
925 | if (tf->flags & ATA_TFLAG_LBA48) { |
926 | desc[8] |= 0x80; | |
927 | if (tf->hob_nsect) | |
928 | desc[8] |= 0x40; | |
929 | if (tf->hob_lbal || tf->hob_lbam || tf->hob_lbah) | |
930 | desc[8] |= 0x20; | |
931 | } | |
932 | desc[9] = tf->lbal; | |
933 | desc[10] = tf->lbam; | |
934 | desc[11] = tf->lbah; | |
1da177e4 | 935 | } |
b095518e | 936 | } |
1da177e4 | 937 | |
b095518e | 938 | /** |
750426aa | 939 | * ata_gen_ata_sense - generate a SCSI fixed sense block |
b095518e JG |
940 | * @qc: Command that we are erroring out |
941 | * | |
d25614ba | 942 | * Generate sense block for a failed ATA command @qc. Descriptor |
25985edc | 943 | * format is used to accommodate LBA48 block address. |
b095518e JG |
944 | * |
945 | * LOCKING: | |
750426aa | 946 | * None. |
b095518e | 947 | */ |
750426aa | 948 | static void ata_gen_ata_sense(struct ata_queued_cmd *qc) |
b095518e | 949 | { |
d25614ba | 950 | struct ata_device *dev = qc->dev; |
b095518e | 951 | struct scsi_cmnd *cmd = qc->scsicmd; |
e61e0672 | 952 | struct ata_taskfile *tf = &qc->result_tf; |
b095518e | 953 | unsigned char *sb = cmd->sense_buffer; |
246619da | 954 | int verbose = qc->ap->ops->error_handler == NULL; |
d25614ba | 955 | u64 block; |
b525e773 | 956 | u8 sense_key, asc, ascq; |
b095518e JG |
957 | |
958 | memset(sb, 0, SCSI_SENSE_BUFFERSIZE); | |
959 | ||
0e5dec47 | 960 | cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
b095518e | 961 | |
59f68474 HR |
962 | if (ata_dev_disabled(dev)) { |
963 | /* Device disabled after error recovery */ | |
964 | /* LOGICAL UNIT NOT READY, HARD RESET REQUIRED */ | |
965 | ata_scsi_set_sense(dev, cmd, NOT_READY, 0x04, 0x21); | |
966 | return; | |
967 | } | |
d25614ba | 968 | /* Use ata_to_sense_error() to map status register bits |
b095518e JG |
969 | * onto sense key, asc & ascq. |
970 | */ | |
058e55e1 TH |
971 | if (qc->err_mask || |
972 | tf->command & (ATA_BUSY | ATA_DF | ATA_ERR | ATA_DRQ)) { | |
44877b4e | 973 | ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, |
b525e773 | 974 | &sense_key, &asc, &ascq, verbose); |
06dbde5f | 975 | ata_scsi_set_sense(dev, cmd, sense_key, asc, ascq); |
5e6acd1c HR |
976 | } else { |
977 | /* Could not decode error */ | |
978 | ata_dev_warn(dev, "could not decode error status 0x%x err_mask 0x%x\n", | |
979 | tf->command, qc->err_mask); | |
06dbde5f | 980 | ata_scsi_set_sense(dev, cmd, ABORTED_COMMAND, 0, 0); |
5e6acd1c | 981 | return; |
1da177e4 | 982 | } |
1da177e4 | 983 | |
d25614ba | 984 | block = ata_tf_read_block(&qc->result_tf, dev); |
cffd1ee9 HR |
985 | if (block == U64_MAX) |
986 | return; | |
a7dac447 | 987 | |
cf8b49b0 | 988 | scsi_set_sense_information(sb, SCSI_SENSE_BUFFERSIZE, block); |
1da177e4 LT |
989 | } |
990 | ||
15964ff7 | 991 | void ata_scsi_sdev_config(struct scsi_device *sdev) |
a6cce2a7 BK |
992 | { |
993 | sdev->use_10_for_rw = 1; | |
994 | sdev->use_10_for_ms = 1; | |
e185934f | 995 | sdev->no_write_same = 1; |
31cc23b3 TH |
996 | |
997 | /* Schedule policy is determined by ->qc_defer() callback and | |
998 | * it needs to see every deferred qc. Set dev_blocked to 1 to | |
999 | * prevent SCSI midlayer from automatically deferring | |
1000 | * requests. | |
1001 | */ | |
1002 | sdev->max_device_blocked = 1; | |
a6cce2a7 BK |
1003 | } |
1004 | ||
fa2fc7f4 | 1005 | /** |
94bd5719 | 1006 | * ata_scsi_dma_need_drain - Check whether data transfer may overflow |
73fd8b6d | 1007 | * @rq: request to be checked |
fa2fc7f4 JB |
1008 | * |
1009 | * ATAPI commands which transfer variable length data to host | |
c9b5560a | 1010 | * might overflow due to application error or hardware bug. This |
fa2fc7f4 JB |
1011 | * function checks whether overflow should be drained and ignored |
1012 | * for @request. | |
1013 | * | |
1014 | * LOCKING: | |
1015 | * None. | |
1016 | * | |
1017 | * RETURNS: | |
1018 | * 1 if ; otherwise, 0. | |
1019 | */ | |
cc97923a | 1020 | bool ata_scsi_dma_need_drain(struct request *rq) |
fa2fc7f4 | 1021 | { |
82ed4db4 | 1022 | return atapi_cmd_type(scsi_req(rq)->cmd[0]) == ATAPI_MISC; |
fa2fc7f4 | 1023 | } |
cc97923a | 1024 | EXPORT_SYMBOL_GPL(ata_scsi_dma_need_drain); |
fa2fc7f4 | 1025 | |
15964ff7 | 1026 | int ata_scsi_dev_config(struct scsi_device *sdev, struct ata_device *dev) |
a6cce2a7 | 1027 | { |
900e599e | 1028 | struct request_queue *q = sdev->request_queue; |
1029 | ||
45fabbb7 EO |
1030 | if (!ata_id_has_unload(dev->id)) |
1031 | dev->flags |= ATA_DFLAG_NO_UNLOAD; | |
1032 | ||
914ed354 | 1033 | /* configure max sectors */ |
900e599e | 1034 | blk_queue_max_hw_sectors(q, dev->max_sectors); |
a6cce2a7 | 1035 | |
fa2fc7f4 | 1036 | if (dev->class == ATA_DEV_ATAPI) { |
729a6a30 TH |
1037 | sdev->sector_size = ATA_SECT_SIZE; |
1038 | ||
1039 | /* set DMA padding */ | |
900e599e | 1040 | blk_queue_update_dma_pad(q, ATA_DMA_PAD_SZ - 1); |
fa2fc7f4 | 1041 | |
cc97923a CH |
1042 | /* make room for appending the drain */ |
1043 | blk_queue_max_segments(q, queue_max_segments(q) - 1); | |
1044 | ||
1045 | sdev->dma_drain_len = ATAPI_MAX_DRAIN; | |
ce288e05 | 1046 | sdev->dma_drain_buf = kmalloc(sdev->dma_drain_len, GFP_NOIO); |
cc97923a | 1047 | if (!sdev->dma_drain_buf) { |
a9a79dfe | 1048 | ata_dev_err(dev, "drain buffer allocation failed\n"); |
fa2fc7f4 JB |
1049 | return -ENOMEM; |
1050 | } | |
fa2fc7f4 | 1051 | } else { |
295124dc | 1052 | sdev->sector_size = ata_id_logical_sector_size(dev->id); |
d8cf5389 | 1053 | sdev->manage_start_stop = 1; |
dde20207 | 1054 | } |
d8cf5389 | 1055 | |
729a6a30 TH |
1056 | /* |
1057 | * ata_pio_sectors() expects buffer for each sector to not cross | |
1058 | * page boundary. Enforce it by requiring buffers to be sector | |
1059 | * aligned, which works iff sector_size is not larger than | |
1060 | * PAGE_SIZE. ATAPI devices also need the alignment as | |
1061 | * IDENTIFY_PACKET is executed as ATA_PROT_PIO. | |
1062 | */ | |
1063 | if (sdev->sector_size > PAGE_SIZE) | |
a9a79dfe | 1064 | ata_dev_warn(dev, |
729a6a30 TH |
1065 | "sector_size=%u > PAGE_SIZE, PIO may malfunction\n", |
1066 | sdev->sector_size); | |
1067 | ||
900e599e | 1068 | blk_queue_update_dma_alignment(q, sdev->sector_size - 1); |
729a6a30 | 1069 | |
f26792d5 JG |
1070 | if (dev->flags & ATA_DFLAG_AN) |
1071 | set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events); | |
1072 | ||
a6e6ce8e TH |
1073 | if (dev->flags & ATA_DFLAG_NCQ) { |
1074 | int depth; | |
1075 | ||
1076 | depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id)); | |
69278f79 | 1077 | depth = min(ATA_MAX_QUEUE, depth); |
db5ed4df | 1078 | scsi_change_queue_depth(sdev, depth); |
a6e6ce8e | 1079 | } |
fa2fc7f4 | 1080 | |
d80210f2 CH |
1081 | if (dev->flags & ATA_DFLAG_TRUSTED) |
1082 | sdev->security_supported = 1; | |
1083 | ||
295124dc | 1084 | dev->sdev = sdev; |
fa2fc7f4 | 1085 | return 0; |
a6cce2a7 BK |
1086 | } |
1087 | ||
1da177e4 LT |
1088 | /** |
1089 | * ata_scsi_slave_config - Set SCSI device attributes | |
1090 | * @sdev: SCSI device to examine | |
1091 | * | |
1092 | * This is called before we actually start reading | |
1093 | * and writing to the device, to configure certain | |
1094 | * SCSI mid-layer behaviors. | |
1095 | * | |
1096 | * LOCKING: | |
1097 | * Defined by SCSI layer. We don't really care. | |
1098 | */ | |
1099 | ||
1100 | int ata_scsi_slave_config(struct scsi_device *sdev) | |
1101 | { | |
31534363 TH |
1102 | struct ata_port *ap = ata_shost_to_port(sdev->host); |
1103 | struct ata_device *dev = __ata_scsi_find_dev(ap, sdev); | |
fa2fc7f4 | 1104 | int rc = 0; |
31534363 | 1105 | |
a6cce2a7 | 1106 | ata_scsi_sdev_config(sdev); |
1da177e4 | 1107 | |
31534363 | 1108 | if (dev) |
fa2fc7f4 | 1109 | rc = ata_scsi_dev_config(sdev, dev); |
1da177e4 | 1110 | |
fa2fc7f4 | 1111 | return rc; |
1da177e4 | 1112 | } |
a52fbcfc | 1113 | EXPORT_SYMBOL_GPL(ata_scsi_slave_config); |
1da177e4 | 1114 | |
83c47bcb TH |
1115 | /** |
1116 | * ata_scsi_slave_destroy - SCSI device is about to be destroyed | |
1117 | * @sdev: SCSI device to be destroyed | |
1118 | * | |
1119 | * @sdev is about to be destroyed for hot/warm unplugging. If | |
1120 | * this unplugging was initiated by libata as indicated by NULL | |
1121 | * dev->sdev, this function doesn't have to do anything. | |
1122 | * Otherwise, SCSI layer initiated warm-unplug is in progress. | |
1123 | * Clear dev->sdev, schedule the device for ATA detach and invoke | |
1124 | * EH. | |
1125 | * | |
1126 | * LOCKING: | |
1127 | * Defined by SCSI layer. We don't really care. | |
1128 | */ | |
1129 | void ata_scsi_slave_destroy(struct scsi_device *sdev) | |
1130 | { | |
1131 | struct ata_port *ap = ata_shost_to_port(sdev->host); | |
1132 | unsigned long flags; | |
1133 | struct ata_device *dev; | |
1134 | ||
1135 | if (!ap->ops->error_handler) | |
1136 | return; | |
1137 | ||
ba6a1308 | 1138 | spin_lock_irqsave(ap->lock, flags); |
83c47bcb TH |
1139 | dev = __ata_scsi_find_dev(ap, sdev); |
1140 | if (dev && dev->sdev) { | |
1141 | /* SCSI device already in CANCEL state, no need to offline it */ | |
1142 | dev->sdev = NULL; | |
1143 | dev->flags |= ATA_DFLAG_DETACH; | |
1144 | ata_port_schedule_eh(ap); | |
1145 | } | |
ba6a1308 | 1146 | spin_unlock_irqrestore(ap->lock, flags); |
fa2fc7f4 | 1147 | |
cc97923a | 1148 | kfree(sdev->dma_drain_buf); |
83c47bcb | 1149 | } |
a52fbcfc | 1150 | EXPORT_SYMBOL_GPL(ata_scsi_slave_destroy); |
83c47bcb | 1151 | |
972dcafb DG |
1152 | /** |
1153 | * ata_scsi_start_stop_xlat - Translate SCSI START STOP UNIT command | |
1154 | * @qc: Storage for translated ATA taskfile | |
972dcafb DG |
1155 | * |
1156 | * Sets up an ATA taskfile to issue STANDBY (to stop) or READ VERIFY | |
1157 | * (to start). Perhaps these commands should be preceded by | |
1158 | * CHECK POWER MODE to see what power mode the device is already in. | |
1159 | * [See SAT revision 5 at www.t10.org] | |
1160 | * | |
1161 | * LOCKING: | |
cca3974e | 1162 | * spin_lock_irqsave(host lock) |
972dcafb DG |
1163 | * |
1164 | * RETURNS: | |
1165 | * Zero on success, non-zero on error. | |
1166 | */ | |
ad706991 | 1167 | static unsigned int ata_scsi_start_stop_xlat(struct ata_queued_cmd *qc) |
972dcafb | 1168 | { |
542b1444 | 1169 | struct scsi_cmnd *scmd = qc->scsicmd; |
972dcafb | 1170 | struct ata_taskfile *tf = &qc->tf; |
ad706991 | 1171 | const u8 *cdb = scmd->cmnd; |
bcfc867d | 1172 | u16 fp; |
0df10b84 | 1173 | u8 bp = 0xff; |
972dcafb | 1174 | |
bcfc867d HR |
1175 | if (scmd->cmd_len < 5) { |
1176 | fp = 4; | |
2e5704f6 | 1177 | goto invalid_fld; |
bcfc867d | 1178 | } |
2e5704f6 | 1179 | |
972dcafb DG |
1180 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; |
1181 | tf->protocol = ATA_PROT_NODATA; | |
542b1444 | 1182 | if (cdb[1] & 0x1) { |
972dcafb DG |
1183 | ; /* ignore IMMED bit, violates sat-r05 */ |
1184 | } | |
bcfc867d HR |
1185 | if (cdb[4] & 0x2) { |
1186 | fp = 4; | |
0df10b84 | 1187 | bp = 1; |
ae006510 | 1188 | goto invalid_fld; /* LOEJ bit set not supported */ |
bcfc867d HR |
1189 | } |
1190 | if (((cdb[4] >> 4) & 0xf) != 0) { | |
1191 | fp = 4; | |
0df10b84 | 1192 | bp = 3; |
ae006510 | 1193 | goto invalid_fld; /* power conditions not supported */ |
bcfc867d | 1194 | } |
e31e8531 | 1195 | |
542b1444 | 1196 | if (cdb[4] & 0x1) { |
972dcafb | 1197 | tf->nsect = 1; /* 1 sector, lba=0 */ |
9d5b1302 AL |
1198 | |
1199 | if (qc->dev->flags & ATA_DFLAG_LBA) { | |
c44078c0 | 1200 | tf->flags |= ATA_TFLAG_LBA; |
9d5b1302 AL |
1201 | |
1202 | tf->lbah = 0x0; | |
1203 | tf->lbam = 0x0; | |
1204 | tf->lbal = 0x0; | |
1205 | tf->device |= ATA_LBA; | |
1206 | } else { | |
1207 | /* CHS */ | |
1208 | tf->lbal = 0x1; /* sect */ | |
1209 | tf->lbam = 0x0; /* cyl low */ | |
1210 | tf->lbah = 0x0; /* cyl high */ | |
1211 | } | |
1212 | ||
972dcafb | 1213 | tf->command = ATA_CMD_VERIFY; /* READ VERIFY */ |
920a4b10 | 1214 | } else { |
2a6e58d2 RW |
1215 | /* Some odd clown BIOSen issue spindown on power off (ACPI S4 |
1216 | * or S5) causing some drives to spin up and down again. | |
1217 | */ | |
1218 | if ((qc->ap->flags & ATA_FLAG_NO_POWEROFF_SPINDOWN) && | |
1219 | system_state == SYSTEM_POWER_OFF) | |
1220 | goto skip; | |
1221 | ||
1222 | if ((qc->ap->flags & ATA_FLAG_NO_HIBERNATE_SPINDOWN) && | |
1223 | system_entering_hibernation()) | |
1224 | goto skip; | |
1225 | ||
78981a7c RH |
1226 | /* Issue ATA STANDBY IMMEDIATE command */ |
1227 | tf->command = ATA_CMD_STANDBYNOW1; | |
920a4b10 | 1228 | } |
78981a7c | 1229 | |
972dcafb DG |
1230 | /* |
1231 | * Standby and Idle condition timers could be implemented but that | |
1232 | * would require libata to implement the Power condition mode page | |
1233 | * and allow the user to change it. Changing mode pages requires | |
1234 | * MODE SELECT to be implemented. | |
1235 | */ | |
1236 | ||
1237 | return 0; | |
ae006510 | 1238 | |
2a6e58d2 | 1239 | invalid_fld: |
0df10b84 | 1240 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); |
ae006510 | 1241 | return 1; |
2a6e58d2 RW |
1242 | skip: |
1243 | scmd->result = SAM_STAT_GOOD; | |
1244 | return 1; | |
972dcafb DG |
1245 | } |
1246 | ||
1247 | ||
1da177e4 LT |
1248 | /** |
1249 | * ata_scsi_flush_xlat - Translate SCSI SYNCHRONIZE CACHE command | |
1250 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1251 | * |
1252 | * Sets up an ATA taskfile to issue FLUSH CACHE or | |
1253 | * FLUSH CACHE EXT. | |
1254 | * | |
1255 | * LOCKING: | |
cca3974e | 1256 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1257 | * |
1258 | * RETURNS: | |
1259 | * Zero on success, non-zero on error. | |
1260 | */ | |
ad706991 | 1261 | static unsigned int ata_scsi_flush_xlat(struct ata_queued_cmd *qc) |
1da177e4 LT |
1262 | { |
1263 | struct ata_taskfile *tf = &qc->tf; | |
1264 | ||
1265 | tf->flags |= ATA_TFLAG_DEVICE; | |
1266 | tf->protocol = ATA_PROT_NODATA; | |
1267 | ||
6fc49adb | 1268 | if (qc->dev->flags & ATA_DFLAG_FLUSH_EXT) |
1da177e4 LT |
1269 | tf->command = ATA_CMD_FLUSH_EXT; |
1270 | else | |
1271 | tf->command = ATA_CMD_FLUSH; | |
1272 | ||
b666da35 TH |
1273 | /* flush is critical for IO integrity, consider it an IO command */ |
1274 | qc->flags |= ATA_QCFLAG_IO; | |
1275 | ||
1da177e4 LT |
1276 | return 0; |
1277 | } | |
1278 | ||
3aef5231 AL |
1279 | /** |
1280 | * scsi_6_lba_len - Get LBA and transfer length | |
542b1444 | 1281 | * @cdb: SCSI command to translate |
3aef5231 AL |
1282 | * |
1283 | * Calculate LBA and transfer length for 6-byte commands. | |
1284 | * | |
1285 | * RETURNS: | |
1286 | * @plba: the LBA | |
1287 | * @plen: the transfer length | |
1288 | */ | |
542b1444 | 1289 | static void scsi_6_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 AL |
1290 | { |
1291 | u64 lba = 0; | |
6c7b7d2b | 1292 | u32 len; |
3aef5231 AL |
1293 | |
1294 | VPRINTK("six-byte command\n"); | |
1295 | ||
6c7b7d2b | 1296 | lba |= ((u64)(cdb[1] & 0x1f)) << 16; |
542b1444 TH |
1297 | lba |= ((u64)cdb[2]) << 8; |
1298 | lba |= ((u64)cdb[3]); | |
3aef5231 | 1299 | |
6c7b7d2b | 1300 | len = cdb[4]; |
3aef5231 AL |
1301 | |
1302 | *plba = lba; | |
1303 | *plen = len; | |
1304 | } | |
1305 | ||
1306 | /** | |
1307 | * scsi_10_lba_len - Get LBA and transfer length | |
542b1444 | 1308 | * @cdb: SCSI command to translate |
3aef5231 AL |
1309 | * |
1310 | * Calculate LBA and transfer length for 10-byte commands. | |
1311 | * | |
1312 | * RETURNS: | |
1313 | * @plba: the LBA | |
1314 | * @plen: the transfer length | |
1315 | */ | |
542b1444 | 1316 | static void scsi_10_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 AL |
1317 | { |
1318 | u64 lba = 0; | |
1319 | u32 len = 0; | |
1320 | ||
1321 | VPRINTK("ten-byte command\n"); | |
1322 | ||
542b1444 TH |
1323 | lba |= ((u64)cdb[2]) << 24; |
1324 | lba |= ((u64)cdb[3]) << 16; | |
1325 | lba |= ((u64)cdb[4]) << 8; | |
1326 | lba |= ((u64)cdb[5]); | |
3aef5231 | 1327 | |
542b1444 TH |
1328 | len |= ((u32)cdb[7]) << 8; |
1329 | len |= ((u32)cdb[8]); | |
3aef5231 AL |
1330 | |
1331 | *plba = lba; | |
1332 | *plen = len; | |
1333 | } | |
1334 | ||
1335 | /** | |
1336 | * scsi_16_lba_len - Get LBA and transfer length | |
542b1444 | 1337 | * @cdb: SCSI command to translate |
3aef5231 AL |
1338 | * |
1339 | * Calculate LBA and transfer length for 16-byte commands. | |
1340 | * | |
1341 | * RETURNS: | |
1342 | * @plba: the LBA | |
1343 | * @plen: the transfer length | |
1344 | */ | |
542b1444 | 1345 | static void scsi_16_lba_len(const u8 *cdb, u64 *plba, u32 *plen) |
3aef5231 AL |
1346 | { |
1347 | u64 lba = 0; | |
1348 | u32 len = 0; | |
1349 | ||
1350 | VPRINTK("sixteen-byte command\n"); | |
1351 | ||
542b1444 TH |
1352 | lba |= ((u64)cdb[2]) << 56; |
1353 | lba |= ((u64)cdb[3]) << 48; | |
1354 | lba |= ((u64)cdb[4]) << 40; | |
1355 | lba |= ((u64)cdb[5]) << 32; | |
1356 | lba |= ((u64)cdb[6]) << 24; | |
1357 | lba |= ((u64)cdb[7]) << 16; | |
1358 | lba |= ((u64)cdb[8]) << 8; | |
1359 | lba |= ((u64)cdb[9]); | |
3aef5231 | 1360 | |
542b1444 TH |
1361 | len |= ((u32)cdb[10]) << 24; |
1362 | len |= ((u32)cdb[11]) << 16; | |
1363 | len |= ((u32)cdb[12]) << 8; | |
1364 | len |= ((u32)cdb[13]); | |
3aef5231 AL |
1365 | |
1366 | *plba = lba; | |
1367 | *plen = len; | |
1368 | } | |
1369 | ||
1da177e4 LT |
1370 | /** |
1371 | * ata_scsi_verify_xlat - Translate SCSI VERIFY command into an ATA one | |
1372 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1373 | * |
1374 | * Converts SCSI VERIFY command to an ATA READ VERIFY command. | |
1375 | * | |
1376 | * LOCKING: | |
cca3974e | 1377 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1378 | * |
1379 | * RETURNS: | |
1380 | * Zero on success, non-zero on error. | |
1381 | */ | |
ad706991 | 1382 | static unsigned int ata_scsi_verify_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 1383 | { |
542b1444 | 1384 | struct scsi_cmnd *scmd = qc->scsicmd; |
1da177e4 | 1385 | struct ata_taskfile *tf = &qc->tf; |
8bf62ece | 1386 | struct ata_device *dev = qc->dev; |
1da177e4 | 1387 | u64 dev_sectors = qc->dev->n_sectors; |
ad706991 | 1388 | const u8 *cdb = scmd->cmnd; |
3aef5231 AL |
1389 | u64 block; |
1390 | u32 n_block; | |
bcfc867d | 1391 | u16 fp; |
1da177e4 LT |
1392 | |
1393 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
1394 | tf->protocol = ATA_PROT_NODATA; | |
1da177e4 | 1395 | |
2e5704f6 | 1396 | if (cdb[0] == VERIFY) { |
bcfc867d HR |
1397 | if (scmd->cmd_len < 10) { |
1398 | fp = 9; | |
2e5704f6 | 1399 | goto invalid_fld; |
bcfc867d | 1400 | } |
542b1444 | 1401 | scsi_10_lba_len(cdb, &block, &n_block); |
2e5704f6 | 1402 | } else if (cdb[0] == VERIFY_16) { |
bcfc867d HR |
1403 | if (scmd->cmd_len < 16) { |
1404 | fp = 15; | |
2e5704f6 | 1405 | goto invalid_fld; |
bcfc867d | 1406 | } |
542b1444 | 1407 | scsi_16_lba_len(cdb, &block, &n_block); |
bcfc867d HR |
1408 | } else { |
1409 | fp = 0; | |
ae006510 | 1410 | goto invalid_fld; |
bcfc867d | 1411 | } |
1da177e4 | 1412 | |
8bf62ece | 1413 | if (!n_block) |
ae006510 | 1414 | goto nothing_to_do; |
8bf62ece | 1415 | if (block >= dev_sectors) |
ae006510 | 1416 | goto out_of_range; |
8bf62ece | 1417 | if ((block + n_block) > dev_sectors) |
ae006510 | 1418 | goto out_of_range; |
1da177e4 | 1419 | |
07506697 AL |
1420 | if (dev->flags & ATA_DFLAG_LBA) { |
1421 | tf->flags |= ATA_TFLAG_LBA; | |
1422 | ||
c6a33e24 AL |
1423 | if (lba_28_ok(block, n_block)) { |
1424 | /* use LBA28 */ | |
1425 | tf->command = ATA_CMD_VERIFY; | |
1426 | tf->device |= (block >> 24) & 0xf; | |
1427 | } else if (lba_48_ok(block, n_block)) { | |
1428 | if (!(dev->flags & ATA_DFLAG_LBA48)) | |
1429 | goto out_of_range; | |
07506697 AL |
1430 | |
1431 | /* use LBA48 */ | |
1432 | tf->flags |= ATA_TFLAG_LBA48; | |
8bf62ece | 1433 | tf->command = ATA_CMD_VERIFY_EXT; |
1da177e4 | 1434 | |
8bf62ece | 1435 | tf->hob_nsect = (n_block >> 8) & 0xff; |
1da177e4 | 1436 | |
8bf62ece AL |
1437 | tf->hob_lbah = (block >> 40) & 0xff; |
1438 | tf->hob_lbam = (block >> 32) & 0xff; | |
1439 | tf->hob_lbal = (block >> 24) & 0xff; | |
c6a33e24 AL |
1440 | } else |
1441 | /* request too large even for LBA48 */ | |
1442 | goto out_of_range; | |
8bf62ece AL |
1443 | |
1444 | tf->nsect = n_block & 0xff; | |
1da177e4 | 1445 | |
8bf62ece AL |
1446 | tf->lbah = (block >> 16) & 0xff; |
1447 | tf->lbam = (block >> 8) & 0xff; | |
1448 | tf->lbal = block & 0xff; | |
1da177e4 | 1449 | |
8bf62ece AL |
1450 | tf->device |= ATA_LBA; |
1451 | } else { | |
1452 | /* CHS */ | |
1453 | u32 sect, head, cyl, track; | |
1454 | ||
c6a33e24 AL |
1455 | if (!lba_28_ok(block, n_block)) |
1456 | goto out_of_range; | |
07506697 | 1457 | |
8bf62ece AL |
1458 | /* Convert LBA to CHS */ |
1459 | track = (u32)block / dev->sectors; | |
1460 | cyl = track / dev->heads; | |
1461 | head = track % dev->heads; | |
1462 | sect = (u32)block % dev->sectors + 1; | |
1463 | ||
c187c4b5 AL |
1464 | DPRINTK("block %u track %u cyl %u head %u sect %u\n", |
1465 | (u32)block, track, cyl, head, sect); | |
2e9edbf8 JG |
1466 | |
1467 | /* Check whether the converted CHS can fit. | |
1468 | Cylinder: 0-65535 | |
8bf62ece AL |
1469 | Head: 0-15 |
1470 | Sector: 1-255*/ | |
2e9edbf8 | 1471 | if ((cyl >> 16) || (head >> 4) || (sect >> 8) || (!sect)) |
ae006510 | 1472 | goto out_of_range; |
2e9edbf8 | 1473 | |
8bf62ece AL |
1474 | tf->command = ATA_CMD_VERIFY; |
1475 | tf->nsect = n_block & 0xff; /* Sector count 0 means 256 sectors */ | |
1476 | tf->lbal = sect; | |
1477 | tf->lbam = cyl; | |
1478 | tf->lbah = cyl >> 8; | |
1479 | tf->device |= head; | |
1480 | } | |
1da177e4 LT |
1481 | |
1482 | return 0; | |
ae006510 DG |
1483 | |
1484 | invalid_fld: | |
0df10b84 | 1485 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
ae006510 DG |
1486 | return 1; |
1487 | ||
1488 | out_of_range: | |
06dbde5f | 1489 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
ae006510 DG |
1490 | /* "Logical Block Address out of range" */ |
1491 | return 1; | |
1492 | ||
1493 | nothing_to_do: | |
542b1444 | 1494 | scmd->result = SAM_STAT_GOOD; |
ae006510 | 1495 | return 1; |
1da177e4 LT |
1496 | } |
1497 | ||
2d727150 JA |
1498 | static bool ata_check_nblocks(struct scsi_cmnd *scmd, u32 n_blocks) |
1499 | { | |
1500 | struct request *rq = scmd->request; | |
1501 | u32 req_blocks; | |
1502 | ||
1503 | if (!blk_rq_is_passthrough(rq)) | |
1504 | return true; | |
1505 | ||
1506 | req_blocks = blk_rq_bytes(rq) / scmd->device->sector_size; | |
1507 | if (n_blocks > req_blocks) | |
1508 | return false; | |
1509 | ||
1510 | return true; | |
1511 | } | |
1512 | ||
1da177e4 LT |
1513 | /** |
1514 | * ata_scsi_rw_xlat - Translate SCSI r/w command into an ATA one | |
1515 | * @qc: Storage for translated ATA taskfile | |
1da177e4 LT |
1516 | * |
1517 | * Converts any of six SCSI read/write commands into the | |
1518 | * ATA counterpart, including starting sector (LBA), | |
1519 | * sector count, and taking into account the device's LBA48 | |
1520 | * support. | |
1521 | * | |
1522 | * Commands %READ_6, %READ_10, %READ_16, %WRITE_6, %WRITE_10, and | |
1523 | * %WRITE_16 are currently supported. | |
1524 | * | |
1525 | * LOCKING: | |
cca3974e | 1526 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
1527 | * |
1528 | * RETURNS: | |
1529 | * Zero on success, non-zero on error. | |
1530 | */ | |
ad706991 | 1531 | static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 1532 | { |
542b1444 | 1533 | struct scsi_cmnd *scmd = qc->scsicmd; |
ad706991 | 1534 | const u8 *cdb = scmd->cmnd; |
8e061784 AM |
1535 | struct request *rq = scmd->request; |
1536 | int class = IOPRIO_PRIO_CLASS(req_get_ioprio(rq)); | |
bd056d7e | 1537 | unsigned int tf_flags = 0; |
3aef5231 AL |
1538 | u64 block; |
1539 | u32 n_block; | |
bd056d7e | 1540 | int rc; |
bcfc867d | 1541 | u16 fp = 0; |
1da177e4 | 1542 | |
542b1444 | 1543 | if (cdb[0] == WRITE_10 || cdb[0] == WRITE_6 || cdb[0] == WRITE_16) |
bd056d7e | 1544 | tf_flags |= ATA_TFLAG_WRITE; |
1da177e4 | 1545 | |
9a3dccc4 | 1546 | /* Calculate the SCSI LBA, transfer length and FUA. */ |
542b1444 | 1547 | switch (cdb[0]) { |
3aef5231 AL |
1548 | case READ_10: |
1549 | case WRITE_10: | |
bcfc867d HR |
1550 | if (unlikely(scmd->cmd_len < 10)) { |
1551 | fp = 9; | |
2e5704f6 | 1552 | goto invalid_fld; |
bcfc867d | 1553 | } |
542b1444 | 1554 | scsi_10_lba_len(cdb, &block, &n_block); |
3e451a49 | 1555 | if (cdb[1] & (1 << 3)) |
bd056d7e | 1556 | tf_flags |= ATA_TFLAG_FUA; |
2d727150 JA |
1557 | if (!ata_check_nblocks(scmd, n_block)) |
1558 | goto invalid_fld; | |
3aef5231 AL |
1559 | break; |
1560 | case READ_6: | |
1561 | case WRITE_6: | |
bcfc867d HR |
1562 | if (unlikely(scmd->cmd_len < 6)) { |
1563 | fp = 5; | |
2e5704f6 | 1564 | goto invalid_fld; |
bcfc867d | 1565 | } |
542b1444 | 1566 | scsi_6_lba_len(cdb, &block, &n_block); |
c187c4b5 AL |
1567 | |
1568 | /* for 6-byte r/w commands, transfer length 0 | |
1569 | * means 256 blocks of data, not 0 block. | |
1570 | */ | |
76b2bf9b JG |
1571 | if (!n_block) |
1572 | n_block = 256; | |
2d727150 JA |
1573 | if (!ata_check_nblocks(scmd, n_block)) |
1574 | goto invalid_fld; | |
3aef5231 AL |
1575 | break; |
1576 | case READ_16: | |
1577 | case WRITE_16: | |
bcfc867d HR |
1578 | if (unlikely(scmd->cmd_len < 16)) { |
1579 | fp = 15; | |
2e5704f6 | 1580 | goto invalid_fld; |
bcfc867d | 1581 | } |
542b1444 | 1582 | scsi_16_lba_len(cdb, &block, &n_block); |
3e451a49 | 1583 | if (cdb[1] & (1 << 3)) |
bd056d7e | 1584 | tf_flags |= ATA_TFLAG_FUA; |
2d727150 JA |
1585 | if (!ata_check_nblocks(scmd, n_block)) |
1586 | goto invalid_fld; | |
3aef5231 AL |
1587 | break; |
1588 | default: | |
8bf62ece | 1589 | DPRINTK("no-byte command\n"); |
bcfc867d | 1590 | fp = 0; |
ae006510 | 1591 | goto invalid_fld; |
1da177e4 LT |
1592 | } |
1593 | ||
8bf62ece AL |
1594 | /* Check and compose ATA command */ |
1595 | if (!n_block) | |
c187c4b5 AL |
1596 | /* For 10-byte and 16-byte SCSI R/W commands, transfer |
1597 | * length 0 means transfer 0 block of data. | |
1598 | * However, for ATA R/W commands, sector count 0 means | |
1599 | * 256 or 65536 sectors, not 0 sectors as in SCSI. | |
f51750d5 AC |
1600 | * |
1601 | * WARNING: one or two older ATA drives treat 0 as 0... | |
c187c4b5 | 1602 | */ |
ae006510 | 1603 | goto nothing_to_do; |
1da177e4 | 1604 | |
bd056d7e | 1605 | qc->flags |= ATA_QCFLAG_IO; |
295124dc | 1606 | qc->nbytes = n_block * scmd->device->sector_size; |
1da177e4 | 1607 | |
bd056d7e | 1608 | rc = ata_build_rw_tf(&qc->tf, qc->dev, block, n_block, tf_flags, |
4e5b6260 | 1609 | qc->hw_tag, class); |
8e061784 | 1610 | |
bd056d7e TH |
1611 | if (likely(rc == 0)) |
1612 | return 0; | |
ae006510 | 1613 | |
bd056d7e TH |
1614 | if (rc == -ERANGE) |
1615 | goto out_of_range; | |
1616 | /* treat all other errors as -EINVAL, fall through */ | |
ae006510 | 1617 | invalid_fld: |
0df10b84 | 1618 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
ae006510 DG |
1619 | return 1; |
1620 | ||
1621 | out_of_range: | |
06dbde5f | 1622 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x0); |
ae006510 DG |
1623 | /* "Logical Block Address out of range" */ |
1624 | return 1; | |
1625 | ||
1626 | nothing_to_do: | |
542b1444 | 1627 | scmd->result = SAM_STAT_GOOD; |
ae006510 | 1628 | return 1; |
1da177e4 LT |
1629 | } |
1630 | ||
2aa8f5d6 CH |
1631 | static void ata_qc_done(struct ata_queued_cmd *qc) |
1632 | { | |
1633 | struct scsi_cmnd *cmd = qc->scsicmd; | |
1634 | void (*done)(struct scsi_cmnd *) = qc->scsidone; | |
1635 | ||
1636 | ata_qc_free(qc); | |
1637 | done(cmd); | |
1638 | } | |
1639 | ||
77853bf2 | 1640 | static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) |
1da177e4 | 1641 | { |
c31f571d | 1642 | struct ata_port *ap = qc->ap; |
1da177e4 | 1643 | struct scsi_cmnd *cmd = qc->scsicmd; |
a7dac447 | 1644 | u8 *cdb = cmd->cmnd; |
2dcb407e | 1645 | int need_sense = (qc->err_mask != 0); |
b095518e JG |
1646 | |
1647 | /* For ATA pass thru (SAT) commands, generate a sense block if | |
1648 | * user mandated it or if there's an error. Note that if we | |
84a9a8cd GG |
1649 | * generate because the user forced us to [CK_COND =1], a check |
1650 | * condition is generated and the ATA register values are returned | |
b095518e | 1651 | * whether the command completed successfully or not. If there |
84a9a8cd GG |
1652 | * was no error, we use the following sense data: |
1653 | * sk = RECOVERED ERROR | |
1654 | * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE | |
b095518e | 1655 | */ |
a7dac447 | 1656 | if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) && |
25c7ce7f | 1657 | ((cdb[2] & 0x20) || need_sense)) |
750426aa | 1658 | ata_gen_passthru_sense(qc); |
5b01e4b9 HR |
1659 | else if (qc->flags & ATA_QCFLAG_SENSE_VALID) |
1660 | cmd->result = SAM_STAT_CHECK_CONDITION; | |
25c7ce7f CH |
1661 | else if (need_sense) |
1662 | ata_gen_ata_sense(qc); | |
1663 | else | |
1664 | cmd->result = SAM_STAT_GOOD; | |
1da177e4 | 1665 | |
c31f571d | 1666 | if (need_sense && !ap->ops->error_handler) |
44877b4e | 1667 | ata_dump_status(ap->print_id, &qc->result_tf); |
1da177e4 | 1668 | |
2aa8f5d6 | 1669 | ata_qc_done(qc); |
1da177e4 LT |
1670 | } |
1671 | ||
1672 | /** | |
1673 | * ata_scsi_translate - Translate then issue SCSI command to ATA device | |
1da177e4 LT |
1674 | * @dev: ATA device to which the command is addressed |
1675 | * @cmd: SCSI command to execute | |
1da177e4 LT |
1676 | * @xlat_func: Actor which translates @cmd to an ATA taskfile |
1677 | * | |
1678 | * Our ->queuecommand() function has decided that the SCSI | |
1679 | * command issued can be directly translated into an ATA | |
1680 | * command, rather than handled internally. | |
1681 | * | |
1682 | * This function sets up an ata_queued_cmd structure for the | |
1683 | * SCSI command, and sends that ata_queued_cmd to the hardware. | |
1684 | * | |
ae006510 DG |
1685 | * The xlat_func argument (actor) returns 0 if ready to execute |
1686 | * ATA command, else 1 to finish translation. If 1 is returned | |
1687 | * then cmd->result (and possibly cmd->sense_buffer) are assumed | |
1688 | * to be set reflecting an error condition or clean (early) | |
1689 | * termination. | |
1690 | * | |
1da177e4 | 1691 | * LOCKING: |
cca3974e | 1692 | * spin_lock_irqsave(host lock) |
2115ea94 TH |
1693 | * |
1694 | * RETURNS: | |
1695 | * 0 on success, SCSI_ML_QUEUE_DEVICE_BUSY if the command | |
1696 | * needs to be deferred. | |
1da177e4 | 1697 | */ |
2115ea94 | 1698 | static int ata_scsi_translate(struct ata_device *dev, struct scsi_cmnd *cmd, |
2115ea94 | 1699 | ata_xlat_func_t xlat_func) |
1da177e4 | 1700 | { |
31cc23b3 | 1701 | struct ata_port *ap = dev->link->ap; |
1da177e4 | 1702 | struct ata_queued_cmd *qc; |
31cc23b3 | 1703 | int rc; |
1da177e4 LT |
1704 | |
1705 | VPRINTK("ENTER\n"); | |
1706 | ||
b27dcfb0 | 1707 | qc = ata_scsi_qc_new(dev, cmd); |
1da177e4 | 1708 | if (!qc) |
ae006510 | 1709 | goto err_mem; |
1da177e4 LT |
1710 | |
1711 | /* data is present; dma-map it */ | |
be7db055 | 1712 | if (cmd->sc_data_direction == DMA_FROM_DEVICE || |
1713 | cmd->sc_data_direction == DMA_TO_DEVICE) { | |
7120165c | 1714 | if (unlikely(scsi_bufflen(cmd) < 1)) { |
a9a79dfe | 1715 | ata_dev_warn(dev, "WARNING: zero len r/w req\n"); |
ae006510 | 1716 | goto err_did; |
1da177e4 LT |
1717 | } |
1718 | ||
7120165c | 1719 | ata_sg_init(qc, scsi_sglist(cmd), scsi_sg_count(cmd)); |
1da177e4 LT |
1720 | |
1721 | qc->dma_dir = cmd->sc_data_direction; | |
1722 | } | |
1723 | ||
1724 | qc->complete_fn = ata_scsi_qc_complete; | |
1725 | ||
ad706991 | 1726 | if (xlat_func(qc)) |
ae006510 | 1727 | goto early_finish; |
1da177e4 | 1728 | |
31cc23b3 TH |
1729 | if (ap->ops->qc_defer) { |
1730 | if ((rc = ap->ops->qc_defer(qc))) | |
1731 | goto defer; | |
1732 | } | |
1733 | ||
1da177e4 | 1734 | /* select device, send command to hardware */ |
8e0e694a | 1735 | ata_qc_issue(qc); |
1da177e4 LT |
1736 | |
1737 | VPRINTK("EXIT\n"); | |
2115ea94 | 1738 | return 0; |
1da177e4 | 1739 | |
ae006510 | 1740 | early_finish: |
2dcb407e | 1741 | ata_qc_free(qc); |
b27dcfb0 | 1742 | cmd->scsi_done(cmd); |
ae006510 | 1743 | DPRINTK("EXIT - early finish (good or error)\n"); |
2115ea94 | 1744 | return 0; |
ae006510 DG |
1745 | |
1746 | err_did: | |
1da177e4 | 1747 | ata_qc_free(qc); |
ae006510 | 1748 | cmd->result = (DID_ERROR << 16); |
b27dcfb0 | 1749 | cmd->scsi_done(cmd); |
253b92ec | 1750 | err_mem: |
ae006510 | 1751 | DPRINTK("EXIT - internal\n"); |
2115ea94 | 1752 | return 0; |
3dc1d881 TH |
1753 | |
1754 | defer: | |
31cc23b3 | 1755 | ata_qc_free(qc); |
3dc1d881 | 1756 | DPRINTK("EXIT - defer\n"); |
31cc23b3 TH |
1757 | if (rc == ATA_DEFER_LINK) |
1758 | return SCSI_MLQUEUE_DEVICE_BUSY; | |
1759 | else | |
1760 | return SCSI_MLQUEUE_HOST_BUSY; | |
1da177e4 LT |
1761 | } |
1762 | ||
f0a37d12 CH |
1763 | struct ata_scsi_args { |
1764 | struct ata_device *dev; | |
1765 | u16 *id; | |
1766 | struct scsi_cmnd *cmd; | |
f0a37d12 CH |
1767 | }; |
1768 | ||
1da177e4 LT |
1769 | /** |
1770 | * ata_scsi_rbuf_get - Map response buffer. | |
ec2a20e6 | 1771 | * @cmd: SCSI command containing buffer to be mapped. |
87340e98 TH |
1772 | * @flags: unsigned long variable to store irq enable status |
1773 | * @copy_in: copy in from user buffer | |
1da177e4 | 1774 | * |
87340e98 | 1775 | * Prepare buffer for simulated SCSI commands. |
1da177e4 LT |
1776 | * |
1777 | * LOCKING: | |
87340e98 | 1778 | * spin_lock_irqsave(ata_scsi_rbuf_lock) on success |
1da177e4 LT |
1779 | * |
1780 | * RETURNS: | |
87340e98 | 1781 | * Pointer to response buffer. |
1da177e4 | 1782 | */ |
87340e98 TH |
1783 | static void *ata_scsi_rbuf_get(struct scsi_cmnd *cmd, bool copy_in, |
1784 | unsigned long *flags) | |
1da177e4 | 1785 | { |
87340e98 | 1786 | spin_lock_irqsave(&ata_scsi_rbuf_lock, *flags); |
1da177e4 | 1787 | |
87340e98 TH |
1788 | memset(ata_scsi_rbuf, 0, ATA_SCSI_RBUF_SIZE); |
1789 | if (copy_in) | |
1790 | sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), | |
1791 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); | |
1792 | return ata_scsi_rbuf; | |
1da177e4 LT |
1793 | } |
1794 | ||
1795 | /** | |
1796 | * ata_scsi_rbuf_put - Unmap response buffer. | |
1797 | * @cmd: SCSI command containing buffer to be unmapped. | |
87340e98 TH |
1798 | * @copy_out: copy out result |
1799 | * @flags: @flags passed to ata_scsi_rbuf_get() | |
1da177e4 | 1800 | * |
87340e98 TH |
1801 | * Returns rbuf buffer. The result is copied to @cmd's buffer if |
1802 | * @copy_back is true. | |
1da177e4 LT |
1803 | * |
1804 | * LOCKING: | |
87340e98 | 1805 | * Unlocks ata_scsi_rbuf_lock. |
1da177e4 | 1806 | */ |
87340e98 TH |
1807 | static inline void ata_scsi_rbuf_put(struct scsi_cmnd *cmd, bool copy_out, |
1808 | unsigned long *flags) | |
1da177e4 | 1809 | { |
87340e98 TH |
1810 | if (copy_out) |
1811 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), | |
1812 | ata_scsi_rbuf, ATA_SCSI_RBUF_SIZE); | |
1813 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, *flags); | |
1da177e4 LT |
1814 | } |
1815 | ||
1816 | /** | |
1817 | * ata_scsi_rbuf_fill - wrapper for SCSI command simulators | |
1818 | * @args: device IDENTIFY data / SCSI command of interest. | |
1819 | * @actor: Callback hook for desired SCSI command simulator | |
1820 | * | |
1821 | * Takes care of the hard work of simulating a SCSI command... | |
1822 | * Mapping the response buffer, calling the command's handler, | |
1823 | * and handling the handler's return value. This return value | |
1824 | * indicates whether the handler wishes the SCSI command to be | |
ae006510 DG |
1825 | * completed successfully (0), or not (in which case cmd->result |
1826 | * and sense buffer are assumed to be set). | |
1da177e4 LT |
1827 | * |
1828 | * LOCKING: | |
cca3974e | 1829 | * spin_lock_irqsave(host lock) |
1da177e4 | 1830 | */ |
f0761be3 | 1831 | static void ata_scsi_rbuf_fill(struct ata_scsi_args *args, |
87340e98 | 1832 | unsigned int (*actor)(struct ata_scsi_args *args, u8 *rbuf)) |
1da177e4 LT |
1833 | { |
1834 | u8 *rbuf; | |
87340e98 | 1835 | unsigned int rc; |
1da177e4 | 1836 | struct scsi_cmnd *cmd = args->cmd; |
b445c568 JG |
1837 | unsigned long flags; |
1838 | ||
87340e98 TH |
1839 | rbuf = ata_scsi_rbuf_get(cmd, false, &flags); |
1840 | rc = actor(args, rbuf); | |
1841 | ata_scsi_rbuf_put(cmd, rc == 0, &flags); | |
b445c568 | 1842 | |
ae006510 | 1843 | if (rc == 0) |
1da177e4 | 1844 | cmd->result = SAM_STAT_GOOD; |
1da177e4 LT |
1845 | } |
1846 | ||
1847 | /** | |
1848 | * ata_scsiop_inq_std - Simulate INQUIRY command | |
1849 | * @args: device IDENTIFY data / SCSI command of interest. | |
1850 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
1851 | * |
1852 | * Returns standard device identification data associated | |
b142eb65 | 1853 | * with non-VPD INQUIRY command output. |
1da177e4 LT |
1854 | * |
1855 | * LOCKING: | |
cca3974e | 1856 | * spin_lock_irqsave(host lock) |
1da177e4 | 1857 | */ |
87340e98 | 1858 | static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 1859 | { |
e94f7914 | 1860 | static const u8 versions[] = { |
f9ca5ab8 | 1861 | 0x00, |
87340e98 TH |
1862 | 0x60, /* SAM-3 (no version claimed) */ |
1863 | ||
1864 | 0x03, | |
1865 | 0x20, /* SBC-2 (no version claimed) */ | |
1866 | ||
29a37ea4 TY |
1867 | 0x03, |
1868 | 0x00 /* SPC-3 (no version claimed) */ | |
87340e98 | 1869 | }; |
e94f7914 | 1870 | static const u8 versions_zbc[] = { |
f9ca5ab8 HR |
1871 | 0x00, |
1872 | 0xA0, /* SAM-5 (no version claimed) */ | |
1873 | ||
856c4663 HR |
1874 | 0x06, |
1875 | 0x00, /* SBC-4 (no version claimed) */ | |
f9ca5ab8 | 1876 | |
856c4663 HR |
1877 | 0x05, |
1878 | 0xC0, /* SPC-5 (no version claimed) */ | |
f9ca5ab8 HR |
1879 | |
1880 | 0x60, | |
856c4663 | 1881 | 0x24, /* ZBC r05 */ |
f9ca5ab8 HR |
1882 | }; |
1883 | ||
1da177e4 LT |
1884 | u8 hdr[] = { |
1885 | TYPE_DISK, | |
1886 | 0, | |
1887 | 0x5, /* claim SPC-3 version compatibility */ | |
1888 | 2, | |
415ffdde TY |
1889 | 95 - 4, |
1890 | 0, | |
1891 | 0, | |
1892 | 2 | |
1da177e4 LT |
1893 | }; |
1894 | ||
87340e98 TH |
1895 | VPRINTK("ENTER\n"); |
1896 | ||
8a3e33cf ML |
1897 | /* set scsi removable (RMB) bit per ata bit, or if the |
1898 | * AHCI port says it's external (Hotplug-capable, eSATA). | |
1899 | */ | |
1900 | if (ata_id_removable(args->id) || | |
1901 | (args->dev->link->ap->pflags & ATA_PFLAG_EXTERNAL)) | |
1da177e4 LT |
1902 | hdr[1] |= (1 << 7); |
1903 | ||
56b8cbab | 1904 | if (args->dev->class == ATA_DEV_ZAC) { |
f9ca5ab8 | 1905 | hdr[0] = TYPE_ZBC; |
56b8cbab TY |
1906 | hdr[2] = 0x7; /* claim SPC-5 version compatibility */ |
1907 | } | |
f9ca5ab8 | 1908 | |
1da177e4 | 1909 | memcpy(rbuf, hdr, sizeof(hdr)); |
87340e98 TH |
1910 | memcpy(&rbuf[8], "ATA ", 8); |
1911 | ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16); | |
c49a6bf5 KB |
1912 | |
1913 | /* From SAT, use last 2 words from fw rev unless they are spaces */ | |
1914 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV + 2, 4); | |
1915 | if (strncmp(&rbuf[32], " ", 4) == 0) | |
1916 | ata_id_string(args->id, &rbuf[32], ATA_ID_FW_REV, 4); | |
1da177e4 | 1917 | |
87340e98 TH |
1918 | if (rbuf[32] == 0 || rbuf[32] == ' ') |
1919 | memcpy(&rbuf[32], "n/a ", 4); | |
1da177e4 | 1920 | |
856c4663 | 1921 | if (ata_id_zoned_cap(args->id) || args->dev->class == ATA_DEV_ZAC) |
f9ca5ab8 HR |
1922 | memcpy(rbuf + 58, versions_zbc, sizeof(versions_zbc)); |
1923 | else | |
1924 | memcpy(rbuf + 58, versions, sizeof(versions)); | |
1da177e4 LT |
1925 | |
1926 | return 0; | |
1927 | } | |
1928 | ||
1929 | /** | |
b142eb65 | 1930 | * ata_scsiop_inq_00 - Simulate INQUIRY VPD page 0, list of pages |
1da177e4 LT |
1931 | * @args: device IDENTIFY data / SCSI command of interest. |
1932 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 1933 | * |
b142eb65 | 1934 | * Returns list of inquiry VPD pages available. |
1da177e4 LT |
1935 | * |
1936 | * LOCKING: | |
cca3974e | 1937 | * spin_lock_irqsave(host lock) |
1da177e4 | 1938 | */ |
87340e98 | 1939 | static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 1940 | { |
6d1003ae | 1941 | int num_pages; |
e94f7914 | 1942 | static const u8 pages[] = { |
1da177e4 LT |
1943 | 0x00, /* page 0x00, this page */ |
1944 | 0x80, /* page 0x80, unit serial no page */ | |
1e9dbc92 MW |
1945 | 0x83, /* page 0x83, device ident page */ |
1946 | 0x89, /* page 0x89, ata info page */ | |
18f0f978 | 1947 | 0xb0, /* page 0xb0, block limits page */ |
1e9dbc92 | 1948 | 0xb1, /* page 0xb1, block device characteristics page */ |
02e0a604 | 1949 | 0xb2, /* page 0xb2, thin provisioning page */ |
6d1003ae | 1950 | 0xb6, /* page 0xb6, zoned block device characteristics */ |
1da177e4 | 1951 | }; |
1da177e4 | 1952 | |
6d1003ae HR |
1953 | num_pages = sizeof(pages); |
1954 | if (!(args->dev->flags & ATA_DFLAG_ZAC)) | |
1955 | num_pages--; | |
1956 | rbuf[3] = num_pages; /* number of supported VPD pages */ | |
1957 | memcpy(rbuf + 4, pages, num_pages); | |
1da177e4 LT |
1958 | return 0; |
1959 | } | |
1960 | ||
1961 | /** | |
b142eb65 | 1962 | * ata_scsiop_inq_80 - Simulate INQUIRY VPD page 80, device serial number |
1da177e4 LT |
1963 | * @args: device IDENTIFY data / SCSI command of interest. |
1964 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
1965 | * |
1966 | * Returns ATA device serial number. | |
1967 | * | |
1968 | * LOCKING: | |
cca3974e | 1969 | * spin_lock_irqsave(host lock) |
1da177e4 | 1970 | */ |
87340e98 | 1971 | static unsigned int ata_scsiop_inq_80(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 1972 | { |
e94f7914 | 1973 | static const u8 hdr[] = { |
1da177e4 LT |
1974 | 0, |
1975 | 0x80, /* this page code */ | |
1976 | 0, | |
a0cf733b | 1977 | ATA_ID_SERNO_LEN, /* page len */ |
1da177e4 | 1978 | }; |
1da177e4 | 1979 | |
87340e98 TH |
1980 | memcpy(rbuf, hdr, sizeof(hdr)); |
1981 | ata_id_string(args->id, (unsigned char *) &rbuf[4], | |
1982 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
1da177e4 LT |
1983 | return 0; |
1984 | } | |
1985 | ||
1da177e4 | 1986 | /** |
b142eb65 | 1987 | * ata_scsiop_inq_83 - Simulate INQUIRY VPD page 83, device identity |
1da177e4 LT |
1988 | * @args: device IDENTIFY data / SCSI command of interest. |
1989 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 1990 | * |
b142eb65 JG |
1991 | * Yields two logical unit device identification designators: |
1992 | * - vendor specific ASCII containing the ATA serial number | |
1993 | * - SAT defined "t10 vendor id based" containing ASCII vendor | |
1994 | * name ("ATA "), model and serial numbers. | |
1da177e4 LT |
1995 | * |
1996 | * LOCKING: | |
cca3974e | 1997 | * spin_lock_irqsave(host lock) |
1da177e4 | 1998 | */ |
87340e98 | 1999 | static unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2000 | { |
b142eb65 | 2001 | const int sat_model_serial_desc_len = 68; |
87340e98 | 2002 | int num; |
1da177e4 | 2003 | |
b142eb65 JG |
2004 | rbuf[1] = 0x83; /* this page code */ |
2005 | num = 4; | |
2006 | ||
87340e98 TH |
2007 | /* piv=0, assoc=lu, code_set=ACSII, designator=vendor */ |
2008 | rbuf[num + 0] = 2; | |
2009 | rbuf[num + 3] = ATA_ID_SERNO_LEN; | |
2010 | num += 4; | |
2011 | ata_id_string(args->id, (unsigned char *) rbuf + num, | |
2012 | ATA_ID_SERNO, ATA_ID_SERNO_LEN); | |
2013 | num += ATA_ID_SERNO_LEN; | |
2014 | ||
2015 | /* SAT defined lu model and serial numbers descriptor */ | |
2016 | /* piv=0, assoc=lu, code_set=ACSII, designator=t10 vendor id */ | |
2017 | rbuf[num + 0] = 2; | |
2018 | rbuf[num + 1] = 1; | |
2019 | rbuf[num + 3] = sat_model_serial_desc_len; | |
2020 | num += 4; | |
2021 | memcpy(rbuf + num, "ATA ", 8); | |
2022 | num += 8; | |
2023 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_PROD, | |
2024 | ATA_ID_PROD_LEN); | |
2025 | num += ATA_ID_PROD_LEN; | |
2026 | ata_id_string(args->id, (unsigned char *) rbuf + num, ATA_ID_SERNO, | |
2027 | ATA_ID_SERNO_LEN); | |
2028 | num += ATA_ID_SERNO_LEN; | |
2029 | ||
6b3b9d73 HR |
2030 | if (ata_id_has_wwn(args->id)) { |
2031 | /* SAT defined lu world wide name */ | |
2032 | /* piv=0, assoc=lu, code_set=binary, designator=NAA */ | |
2033 | rbuf[num + 0] = 1; | |
2034 | rbuf[num + 1] = 3; | |
2035 | rbuf[num + 3] = ATA_ID_WWN_LEN; | |
2036 | num += 4; | |
2037 | ata_id_string(args->id, (unsigned char *) rbuf + num, | |
2038 | ATA_ID_WWN, ATA_ID_WWN_LEN); | |
2039 | num += ATA_ID_WWN_LEN; | |
2040 | } | |
b142eb65 | 2041 | rbuf[3] = num - 4; /* page len (assume less than 256 bytes) */ |
1da177e4 LT |
2042 | return 0; |
2043 | } | |
2044 | ||
ad355b46 JG |
2045 | /** |
2046 | * ata_scsiop_inq_89 - Simulate INQUIRY VPD page 89, ATA info | |
2047 | * @args: device IDENTIFY data / SCSI command of interest. | |
2048 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
ad355b46 JG |
2049 | * |
2050 | * Yields SAT-specified ATA VPD page. | |
2051 | * | |
2052 | * LOCKING: | |
2053 | * spin_lock_irqsave(host lock) | |
2054 | */ | |
87340e98 | 2055 | static unsigned int ata_scsiop_inq_89(struct ata_scsi_args *args, u8 *rbuf) |
ad355b46 | 2056 | { |
87340e98 TH |
2057 | rbuf[1] = 0x89; /* our page code */ |
2058 | rbuf[2] = (0x238 >> 8); /* page size fixed at 238h */ | |
2059 | rbuf[3] = (0x238 & 0xff); | |
ad355b46 | 2060 | |
87340e98 TH |
2061 | memcpy(&rbuf[8], "linux ", 8); |
2062 | memcpy(&rbuf[16], "libata ", 16); | |
2063 | memcpy(&rbuf[32], DRV_VERSION, 4); | |
ad355b46 | 2064 | |
87340e98 | 2065 | rbuf[36] = 0x34; /* force D2H Reg FIS (34h) */ |
33531001 BZ |
2066 | rbuf[37] = (1 << 7); /* bit 7 indicates Command FIS */ |
2067 | /* TODO: PMP? */ | |
2068 | ||
2069 | /* we don't store the ATA device signature, so we fake it */ | |
2070 | rbuf[38] = ATA_DRDY; /* really, this is Status reg */ | |
2071 | rbuf[40] = 0x1; | |
2072 | rbuf[48] = 0x1; | |
ad355b46 | 2073 | |
87340e98 | 2074 | rbuf[56] = ATA_CMD_ID_ATA; |
ad355b46 | 2075 | |
87340e98 | 2076 | memcpy(&rbuf[60], &args->id[0], 512); |
ad355b46 JG |
2077 | return 0; |
2078 | } | |
2079 | ||
18f0f978 CH |
2080 | static unsigned int ata_scsiop_inq_b0(struct ata_scsi_args *args, u8 *rbuf) |
2081 | { | |
3b545563 | 2082 | struct ata_device *dev = args->dev; |
295124dc | 2083 | u16 min_io_sectors; |
18f0f978 CH |
2084 | |
2085 | rbuf[1] = 0xb0; | |
2086 | rbuf[3] = 0x3c; /* required VPD size with unmap support */ | |
2087 | ||
2088 | /* | |
2089 | * Optimal transfer length granularity. | |
2090 | * | |
2091 | * This is always one physical block, but for disks with a smaller | |
2092 | * logical than physical sector size we need to figure out what the | |
2093 | * latter is. | |
2094 | */ | |
295124dc | 2095 | min_io_sectors = 1 << ata_id_log2_per_physical_sector(args->id); |
18f0f978 CH |
2096 | put_unaligned_be16(min_io_sectors, &rbuf[6]); |
2097 | ||
2098 | /* | |
2099 | * Optimal unmap granularity. | |
2100 | * | |
2101 | * The ATA spec doesn't even know about a granularity or alignment | |
2102 | * for the TRIM command. We can leave away most of the unmap related | |
2103 | * VPD page entries, but we have specifify a granularity to signal | |
2104 | * that we support some form of unmap - in thise case via WRITE SAME | |
2105 | * with the unmap bit set. | |
2106 | */ | |
e78db4df | 2107 | if (ata_id_has_trim(args->id)) { |
3b545563 TH |
2108 | u64 max_blocks = 65535 * ATA_MAX_TRIM_RNUM; |
2109 | ||
2110 | if (dev->horkage & ATA_HORKAGE_MAX_TRIM_128M) | |
2111 | max_blocks = 128 << (20 - SECTOR_SHIFT); | |
2112 | ||
2113 | put_unaligned_be64(max_blocks, &rbuf[36]); | |
18f0f978 | 2114 | put_unaligned_be32(1, &rbuf[28]); |
e78db4df | 2115 | } |
18f0f978 CH |
2116 | |
2117 | return 0; | |
2118 | } | |
2119 | ||
1e9dbc92 MW |
2120 | static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf) |
2121 | { | |
4bca3286 MP |
2122 | int form_factor = ata_id_form_factor(args->id); |
2123 | int media_rotation_rate = ata_id_rotation_rate(args->id); | |
856c4663 | 2124 | u8 zoned = ata_id_zoned_cap(args->id); |
4bca3286 | 2125 | |
1e9dbc92 MW |
2126 | rbuf[1] = 0xb1; |
2127 | rbuf[3] = 0x3c; | |
4bca3286 MP |
2128 | rbuf[4] = media_rotation_rate >> 8; |
2129 | rbuf[5] = media_rotation_rate; | |
2130 | rbuf[7] = form_factor; | |
856c4663 HR |
2131 | if (zoned) |
2132 | rbuf[8] = (zoned << 4); | |
1e9dbc92 MW |
2133 | |
2134 | return 0; | |
2135 | } | |
2136 | ||
02e0a604 MP |
2137 | static unsigned int ata_scsiop_inq_b2(struct ata_scsi_args *args, u8 *rbuf) |
2138 | { | |
2139 | /* SCSI Thin Provisioning VPD page: SBC-3 rev 22 or later */ | |
2140 | rbuf[1] = 0xb2; | |
2141 | rbuf[3] = 0x4; | |
2142 | rbuf[5] = 1 << 6; /* TPWS */ | |
2143 | ||
2144 | return 0; | |
2145 | } | |
2146 | ||
6d1003ae HR |
2147 | static unsigned int ata_scsiop_inq_b6(struct ata_scsi_args *args, u8 *rbuf) |
2148 | { | |
2149 | /* | |
2150 | * zbc-r05 SCSI Zoned Block device characteristics VPD page | |
2151 | */ | |
2152 | rbuf[1] = 0xb6; | |
2153 | rbuf[3] = 0x3C; | |
2154 | ||
2155 | /* | |
2156 | * URSWRZ bit is only meaningful for host-managed ZAC drives | |
2157 | */ | |
2158 | if (args->dev->zac_zoned_cap & 1) | |
2159 | rbuf[4] |= 1; | |
2160 | put_unaligned_be32(args->dev->zac_zones_optimal_open, &rbuf[8]); | |
2161 | put_unaligned_be32(args->dev->zac_zones_optimal_nonseq, &rbuf[12]); | |
2162 | put_unaligned_be32(args->dev->zac_zones_max_open, &rbuf[16]); | |
2163 | ||
2164 | return 0; | |
2165 | } | |
2166 | ||
6ca8e794 PB |
2167 | /** |
2168 | * modecpy - Prepare response for MODE SENSE | |
2169 | * @dest: output buffer | |
2170 | * @src: data being copied | |
2171 | * @n: length of mode page | |
2172 | * @changeable: whether changeable parameters are requested | |
2173 | * | |
2174 | * Generate a generic MODE SENSE page for either current or changeable | |
2175 | * parameters. | |
2176 | * | |
2177 | * LOCKING: | |
2178 | * None. | |
2179 | */ | |
2180 | static void modecpy(u8 *dest, const u8 *src, int n, bool changeable) | |
2181 | { | |
2182 | if (changeable) { | |
2183 | memcpy(dest, src, 2); | |
2184 | memset(dest + 2, 0, n - 2); | |
2185 | } else { | |
2186 | memcpy(dest, src, n); | |
2187 | } | |
2188 | } | |
2189 | ||
1da177e4 LT |
2190 | /** |
2191 | * ata_msense_caching - Simulate MODE SENSE caching info page | |
2192 | * @id: device IDENTIFY data | |
87340e98 | 2193 | * @buf: output buffer |
6ca8e794 | 2194 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2195 | * |
2196 | * Generate a caching info page, which conditionally indicates | |
2197 | * write caching to the SCSI layer, depending on device | |
2198 | * capabilities. | |
2199 | * | |
2200 | * LOCKING: | |
2201 | * None. | |
2202 | */ | |
6ca8e794 | 2203 | static unsigned int ata_msense_caching(u16 *id, u8 *buf, bool changeable) |
1da177e4 | 2204 | { |
6ca8e794 | 2205 | modecpy(buf, def_cache_mpage, sizeof(def_cache_mpage), changeable); |
737bee93 TY |
2206 | if (changeable) { |
2207 | buf[2] |= (1 << 2); /* ata_mselect_caching() */ | |
2208 | } else { | |
2209 | buf[2] |= (ata_id_wcache_enabled(id) << 2); /* write cache enable */ | |
2210 | buf[12] |= (!ata_id_rahead_enabled(id) << 5); /* disable read ahead */ | |
2211 | } | |
87340e98 | 2212 | return sizeof(def_cache_mpage); |
1da177e4 LT |
2213 | } |
2214 | ||
2215 | /** | |
f086b748 | 2216 | * ata_msense_control - Simulate MODE SENSE control mode page |
06dbde5f | 2217 | * @dev: ATA device of interest |
87340e98 | 2218 | * @buf: output buffer |
6ca8e794 | 2219 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2220 | * |
2221 | * Generate a generic MODE SENSE control mode page. | |
2222 | * | |
2223 | * LOCKING: | |
2224 | * None. | |
2225 | */ | |
f086b748 | 2226 | static unsigned int ata_msense_control(struct ata_device *dev, u8 *buf, |
06dbde5f | 2227 | bool changeable) |
1da177e4 | 2228 | { |
6ca8e794 | 2229 | modecpy(buf, def_control_mpage, sizeof(def_control_mpage), changeable); |
737bee93 TY |
2230 | if (changeable) { |
2231 | buf[2] |= (1 << 2); /* ata_mselect_control() */ | |
2232 | } else { | |
2233 | bool d_sense = (dev->flags & ATA_DFLAG_D_SENSE); | |
2234 | ||
2235 | buf[2] |= (d_sense << 2); /* descriptor format sense data */ | |
2236 | } | |
00ac37f5 | 2237 | return sizeof(def_control_mpage); |
1da177e4 LT |
2238 | } |
2239 | ||
2240 | /** | |
2241 | * ata_msense_rw_recovery - Simulate MODE SENSE r/w error recovery page | |
ec2a20e6 | 2242 | * @buf: output buffer |
6ca8e794 | 2243 | * @changeable: whether changeable parameters are requested |
1da177e4 LT |
2244 | * |
2245 | * Generate a generic MODE SENSE r/w error recovery page. | |
2246 | * | |
2247 | * LOCKING: | |
2248 | * None. | |
2249 | */ | |
6ca8e794 | 2250 | static unsigned int ata_msense_rw_recovery(u8 *buf, bool changeable) |
1da177e4 | 2251 | { |
6ca8e794 PB |
2252 | modecpy(buf, def_rw_recovery_mpage, sizeof(def_rw_recovery_mpage), |
2253 | changeable); | |
00ac37f5 | 2254 | return sizeof(def_rw_recovery_mpage); |
1da177e4 LT |
2255 | } |
2256 | ||
48bdc8ec JA |
2257 | /* |
2258 | * We can turn this into a real blacklist if it's needed, for now just | |
2259 | * blacklist any Maxtor BANC1G10 revision firmware | |
2260 | */ | |
2261 | static int ata_dev_supports_fua(u16 *id) | |
2262 | { | |
a0cf733b | 2263 | unsigned char model[ATA_ID_PROD_LEN + 1], fw[ATA_ID_FW_REV_LEN + 1]; |
48bdc8ec | 2264 | |
c3c013a2 JG |
2265 | if (!libata_fua) |
2266 | return 0; | |
48bdc8ec JA |
2267 | if (!ata_id_has_fua(id)) |
2268 | return 0; | |
2269 | ||
a0cf733b TH |
2270 | ata_id_c_string(id, model, ATA_ID_PROD, sizeof(model)); |
2271 | ata_id_c_string(id, fw, ATA_ID_FW_REV, sizeof(fw)); | |
48bdc8ec | 2272 | |
2e02671d | 2273 | if (strcmp(model, "Maxtor")) |
48bdc8ec | 2274 | return 1; |
2e02671d | 2275 | if (strcmp(fw, "BANC1G10")) |
48bdc8ec JA |
2276 | return 1; |
2277 | ||
2278 | return 0; /* blacklisted */ | |
2279 | } | |
2280 | ||
1da177e4 LT |
2281 | /** |
2282 | * ata_scsiop_mode_sense - Simulate MODE SENSE 6, 10 commands | |
2283 | * @args: device IDENTIFY data / SCSI command of interest. | |
2284 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 | 2285 | * |
00ac37f5 DG |
2286 | * Simulate MODE SENSE commands. Assume this is invoked for direct |
2287 | * access devices (e.g. disks) only. There should be no block | |
2288 | * descriptor for other device types. | |
1da177e4 LT |
2289 | * |
2290 | * LOCKING: | |
cca3974e | 2291 | * spin_lock_irqsave(host lock) |
1da177e4 | 2292 | */ |
87340e98 | 2293 | static unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2294 | { |
9a3dccc4 | 2295 | struct ata_device *dev = args->dev; |
87340e98 | 2296 | u8 *scsicmd = args->cmd->cmnd, *p = rbuf; |
e94f7914 | 2297 | static const u8 sat_blk_desc[] = { |
00ac37f5 DG |
2298 | 0, 0, 0, 0, /* number of blocks: sat unspecified */ |
2299 | 0, | |
2300 | 0, 0x2, 0x0 /* block length: 512 bytes */ | |
2301 | }; | |
2302 | u8 pg, spg; | |
87340e98 | 2303 | unsigned int ebd, page_control, six_byte; |
0df10b84 | 2304 | u8 dpofua, bp = 0xff; |
bcfc867d | 2305 | u16 fp; |
1da177e4 LT |
2306 | |
2307 | VPRINTK("ENTER\n"); | |
2308 | ||
2309 | six_byte = (scsicmd[0] == MODE_SENSE); | |
00ac37f5 DG |
2310 | ebd = !(scsicmd[1] & 0x8); /* dbd bit inverted == edb */ |
2311 | /* | |
2312 | * LLBA bit in msense(10) ignored (compliant) | |
1da177e4 | 2313 | */ |
00ac37f5 | 2314 | |
1da177e4 | 2315 | page_control = scsicmd[2] >> 6; |
ae006510 DG |
2316 | switch (page_control) { |
2317 | case 0: /* current */ | |
6ca8e794 PB |
2318 | case 1: /* changeable */ |
2319 | case 2: /* defaults */ | |
ae006510 DG |
2320 | break; /* supported */ |
2321 | case 3: /* saved */ | |
2322 | goto saving_not_supp; | |
ae006510 | 2323 | default: |
bcfc867d | 2324 | fp = 2; |
0df10b84 | 2325 | bp = 6; |
ae006510 DG |
2326 | goto invalid_fld; |
2327 | } | |
1da177e4 | 2328 | |
87340e98 TH |
2329 | if (six_byte) |
2330 | p += 4 + (ebd ? 8 : 0); | |
2331 | else | |
2332 | p += 8 + (ebd ? 8 : 0); | |
1da177e4 | 2333 | |
00ac37f5 DG |
2334 | pg = scsicmd[2] & 0x3f; |
2335 | spg = scsicmd[3]; | |
2336 | /* | |
2337 | * No mode subpages supported (yet) but asking for _all_ | |
2338 | * subpages may be valid | |
2339 | */ | |
bcfc867d HR |
2340 | if (spg && (spg != ALL_SUB_MPAGES)) { |
2341 | fp = 3; | |
00ac37f5 | 2342 | goto invalid_fld; |
bcfc867d | 2343 | } |
00ac37f5 DG |
2344 | |
2345 | switch(pg) { | |
2346 | case RW_RECOVERY_MPAGE: | |
6ca8e794 | 2347 | p += ata_msense_rw_recovery(p, page_control == 1); |
1da177e4 LT |
2348 | break; |
2349 | ||
00ac37f5 | 2350 | case CACHE_MPAGE: |
6ca8e794 | 2351 | p += ata_msense_caching(args->id, p, page_control == 1); |
1da177e4 LT |
2352 | break; |
2353 | ||
87340e98 | 2354 | case CONTROL_MPAGE: |
f086b748 | 2355 | p += ata_msense_control(args->dev, p, page_control == 1); |
1da177e4 | 2356 | break; |
1da177e4 | 2357 | |
00ac37f5 | 2358 | case ALL_MPAGES: |
6ca8e794 PB |
2359 | p += ata_msense_rw_recovery(p, page_control == 1); |
2360 | p += ata_msense_caching(args->id, p, page_control == 1); | |
f086b748 | 2361 | p += ata_msense_control(args->dev, p, page_control == 1); |
1da177e4 LT |
2362 | break; |
2363 | ||
2364 | default: /* invalid page code */ | |
bcfc867d | 2365 | fp = 2; |
ae006510 | 2366 | goto invalid_fld; |
1da177e4 LT |
2367 | } |
2368 | ||
9a3dccc4 | 2369 | dpofua = 0; |
f79d409f | 2370 | if (ata_dev_supports_fua(args->id) && (dev->flags & ATA_DFLAG_LBA48) && |
9a3dccc4 TH |
2371 | (!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count)) |
2372 | dpofua = 1 << 4; | |
2373 | ||
1da177e4 | 2374 | if (six_byte) { |
87340e98 TH |
2375 | rbuf[0] = p - rbuf - 1; |
2376 | rbuf[2] |= dpofua; | |
00ac37f5 | 2377 | if (ebd) { |
87340e98 TH |
2378 | rbuf[3] = sizeof(sat_blk_desc); |
2379 | memcpy(rbuf + 4, sat_blk_desc, sizeof(sat_blk_desc)); | |
00ac37f5 | 2380 | } |
1da177e4 | 2381 | } else { |
87340e98 TH |
2382 | unsigned int output_len = p - rbuf - 2; |
2383 | ||
1da177e4 | 2384 | rbuf[0] = output_len >> 8; |
87340e98 TH |
2385 | rbuf[1] = output_len; |
2386 | rbuf[3] |= dpofua; | |
00ac37f5 | 2387 | if (ebd) { |
87340e98 TH |
2388 | rbuf[7] = sizeof(sat_blk_desc); |
2389 | memcpy(rbuf + 8, sat_blk_desc, sizeof(sat_blk_desc)); | |
00ac37f5 | 2390 | } |
1da177e4 | 2391 | } |
1da177e4 | 2392 | return 0; |
ae006510 DG |
2393 | |
2394 | invalid_fld: | |
0df10b84 | 2395 | ata_scsi_set_invalid_field(dev, args->cmd, fp, bp); |
ae006510 DG |
2396 | return 1; |
2397 | ||
2398 | saving_not_supp: | |
06dbde5f | 2399 | ata_scsi_set_sense(dev, args->cmd, ILLEGAL_REQUEST, 0x39, 0x0); |
ae006510 DG |
2400 | /* "Saving parameters not supported" */ |
2401 | return 1; | |
1da177e4 LT |
2402 | } |
2403 | ||
2404 | /** | |
2405 | * ata_scsiop_read_cap - Simulate READ CAPACITY[ 16] commands | |
2406 | * @args: device IDENTIFY data / SCSI command of interest. | |
2407 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2408 | * |
2409 | * Simulate READ CAPACITY commands. | |
2410 | * | |
2411 | * LOCKING: | |
6a36261e | 2412 | * None. |
1da177e4 | 2413 | */ |
87340e98 | 2414 | static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 | 2415 | { |
61d79a8e MP |
2416 | struct ata_device *dev = args->dev; |
2417 | u64 last_lba = dev->n_sectors - 1; /* LBA of the last block */ | |
295124dc GG |
2418 | u32 sector_size; /* physical sector size in bytes */ |
2419 | u8 log2_per_phys; | |
2420 | u16 lowest_aligned; | |
2421 | ||
2422 | sector_size = ata_id_logical_sector_size(dev->id); | |
2423 | log2_per_phys = ata_id_log2_per_physical_sector(dev->id); | |
2424 | lowest_aligned = ata_id_logical_sector_offset(dev->id, log2_per_phys); | |
1da177e4 LT |
2425 | |
2426 | VPRINTK("ENTER\n"); | |
2427 | ||
1da177e4 | 2428 | if (args->cmd->cmnd[0] == READ_CAPACITY) { |
6a36261e TH |
2429 | if (last_lba >= 0xffffffffULL) |
2430 | last_lba = 0xffffffff; | |
0c144d0d | 2431 | |
1da177e4 | 2432 | /* sector count, 32-bit */ |
87340e98 TH |
2433 | rbuf[0] = last_lba >> (8 * 3); |
2434 | rbuf[1] = last_lba >> (8 * 2); | |
2435 | rbuf[2] = last_lba >> (8 * 1); | |
2436 | rbuf[3] = last_lba; | |
1da177e4 LT |
2437 | |
2438 | /* sector size */ | |
295124dc GG |
2439 | rbuf[4] = sector_size >> (8 * 3); |
2440 | rbuf[5] = sector_size >> (8 * 2); | |
2441 | rbuf[6] = sector_size >> (8 * 1); | |
2442 | rbuf[7] = sector_size; | |
1da177e4 LT |
2443 | } else { |
2444 | /* sector count, 64-bit */ | |
87340e98 TH |
2445 | rbuf[0] = last_lba >> (8 * 7); |
2446 | rbuf[1] = last_lba >> (8 * 6); | |
2447 | rbuf[2] = last_lba >> (8 * 5); | |
2448 | rbuf[3] = last_lba >> (8 * 4); | |
2449 | rbuf[4] = last_lba >> (8 * 3); | |
2450 | rbuf[5] = last_lba >> (8 * 2); | |
2451 | rbuf[6] = last_lba >> (8 * 1); | |
2452 | rbuf[7] = last_lba; | |
1da177e4 LT |
2453 | |
2454 | /* sector size */ | |
295124dc GG |
2455 | rbuf[ 8] = sector_size >> (8 * 3); |
2456 | rbuf[ 9] = sector_size >> (8 * 2); | |
2457 | rbuf[10] = sector_size >> (8 * 1); | |
2458 | rbuf[11] = sector_size; | |
61d79a8e MP |
2459 | |
2460 | rbuf[12] = 0; | |
295124dc | 2461 | rbuf[13] = log2_per_phys; |
61d79a8e MP |
2462 | rbuf[14] = (lowest_aligned >> 8) & 0x3f; |
2463 | rbuf[15] = lowest_aligned; | |
18f0f978 | 2464 | |
71d126fd AF |
2465 | if (ata_id_has_trim(args->id) && |
2466 | !(dev->horkage & ATA_HORKAGE_NOTRIM)) { | |
e61f7d1c | 2467 | rbuf[14] |= 0x80; /* LBPME */ |
e78db4df | 2468 | |
e61f7d1c MP |
2469 | if (ata_id_has_zero_after_trim(args->id) && |
2470 | dev->horkage & ATA_HORKAGE_ZERO_AFTER_TRIM) { | |
2471 | ata_dev_info(dev, "Enabling discard_zeroes_data\n"); | |
2472 | rbuf[14] |= 0x40; /* LBPRZ */ | |
2473 | } | |
e78db4df | 2474 | } |
6d1003ae HR |
2475 | if (ata_id_zoned_cap(args->id) || |
2476 | args->dev->class == ATA_DEV_ZAC) | |
2477 | rbuf[12] = (1 << 4); /* RC_BASIS */ | |
1da177e4 | 2478 | } |
1da177e4 LT |
2479 | return 0; |
2480 | } | |
2481 | ||
2482 | /** | |
2483 | * ata_scsiop_report_luns - Simulate REPORT LUNS command | |
2484 | * @args: device IDENTIFY data / SCSI command of interest. | |
2485 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
1da177e4 LT |
2486 | * |
2487 | * Simulate REPORT LUNS command. | |
2488 | * | |
2489 | * LOCKING: | |
cca3974e | 2490 | * spin_lock_irqsave(host lock) |
1da177e4 | 2491 | */ |
87340e98 | 2492 | static unsigned int ata_scsiop_report_luns(struct ata_scsi_args *args, u8 *rbuf) |
1da177e4 LT |
2493 | { |
2494 | VPRINTK("ENTER\n"); | |
2495 | rbuf[3] = 8; /* just one lun, LUN 0, size 8 bytes */ | |
2496 | ||
2497 | return 0; | |
2498 | } | |
2499 | ||
77853bf2 | 2500 | static void atapi_sense_complete(struct ata_queued_cmd *qc) |
a939c963 | 2501 | { |
74e6c8c3 | 2502 | if (qc->err_mask && ((qc->err_mask & AC_ERR_DEV) == 0)) { |
c6e6e666 JG |
2503 | /* FIXME: not quite right; we don't want the |
2504 | * translation of taskfile registers into | |
2505 | * a sense descriptors, since that's only | |
2506 | * correct for ATA, not ATAPI | |
2507 | */ | |
750426aa | 2508 | ata_gen_passthru_sense(qc); |
74e6c8c3 | 2509 | } |
a939c963 | 2510 | |
2aa8f5d6 | 2511 | ata_qc_done(qc); |
c6e6e666 | 2512 | } |
a939c963 | 2513 | |
c6e6e666 JG |
2514 | /* is it pointless to prefer PIO for "safety reasons"? */ |
2515 | static inline int ata_pio_use_silly(struct ata_port *ap) | |
2516 | { | |
2517 | return (ap->flags & ATA_FLAG_PIO_DMA); | |
2518 | } | |
2519 | ||
2520 | static void atapi_request_sense(struct ata_queued_cmd *qc) | |
2521 | { | |
2522 | struct ata_port *ap = qc->ap; | |
2523 | struct scsi_cmnd *cmd = qc->scsicmd; | |
2524 | ||
2525 | DPRINTK("ATAPI request sense\n"); | |
a939c963 | 2526 | |
7ccd720d | 2527 | memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); |
a939c963 | 2528 | |
127102ae | 2529 | #ifdef CONFIG_ATA_SFF |
855d854a JB |
2530 | if (ap->ops->sff_tf_read) |
2531 | ap->ops->sff_tf_read(ap, &qc->tf); | |
127102ae | 2532 | #endif |
c6e6e666 JG |
2533 | |
2534 | /* fill these in, for the case where they are -not- overwritten */ | |
2535 | cmd->sense_buffer[0] = 0x70; | |
2536 | cmd->sense_buffer[2] = qc->tf.feature >> 4; | |
2537 | ||
2538 | ata_qc_reinit(qc); | |
2539 | ||
93f8fecb | 2540 | /* setup sg table and init transfer direction */ |
cadb7345 | 2541 | sg_init_one(&qc->sgent, cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE); |
93f8fecb | 2542 | ata_sg_init(qc, &qc->sgent, 1); |
a939c963 JG |
2543 | qc->dma_dir = DMA_FROM_DEVICE; |
2544 | ||
6e7846e9 | 2545 | memset(&qc->cdb, 0, qc->dev->cdb_len); |
a939c963 JG |
2546 | qc->cdb[0] = REQUEST_SENSE; |
2547 | qc->cdb[4] = SCSI_SENSE_BUFFERSIZE; | |
2548 | ||
2549 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
2550 | qc->tf.command = ATA_CMD_PACKET; | |
2551 | ||
c6e6e666 | 2552 | if (ata_pio_use_silly(ap)) { |
0dc36888 | 2553 | qc->tf.protocol = ATAPI_PROT_DMA; |
c6e6e666 JG |
2554 | qc->tf.feature |= ATAPI_PKT_DMA; |
2555 | } else { | |
0dc36888 | 2556 | qc->tf.protocol = ATAPI_PROT_PIO; |
2db78dd3 AC |
2557 | qc->tf.lbam = SCSI_SENSE_BUFFERSIZE; |
2558 | qc->tf.lbah = 0; | |
c6e6e666 | 2559 | } |
a939c963 JG |
2560 | qc->nbytes = SCSI_SENSE_BUFFERSIZE; |
2561 | ||
c6e6e666 | 2562 | qc->complete_fn = atapi_sense_complete; |
a939c963 | 2563 | |
8e0e694a | 2564 | ata_qc_issue(qc); |
a939c963 JG |
2565 | |
2566 | DPRINTK("EXIT\n"); | |
2567 | } | |
2568 | ||
aa18da8b CH |
2569 | /* |
2570 | * ATAPI devices typically report zero for their SCSI version, and sometimes | |
2571 | * deviate from the spec WRT response data format. If SCSI version is | |
2572 | * reported as zero like normal, then we make the following fixups: | |
2573 | * 1) Fake MMC-5 version, to indicate to the Linux scsi midlayer this is a | |
2574 | * modern device. | |
2575 | * 2) Ensure response data format / ATAPI information are always correct. | |
2576 | */ | |
2577 | static void atapi_fixup_inquiry(struct scsi_cmnd *cmd) | |
2578 | { | |
2579 | u8 buf[4]; | |
2580 | ||
2581 | sg_copy_to_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, 4); | |
2582 | if (buf[2] == 0) { | |
2583 | buf[2] = 0x5; | |
2584 | buf[3] = 0x32; | |
2585 | } | |
2586 | sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, 4); | |
2587 | } | |
2588 | ||
77853bf2 | 2589 | static void atapi_qc_complete(struct ata_queued_cmd *qc) |
1da177e4 LT |
2590 | { |
2591 | struct scsi_cmnd *cmd = qc->scsicmd; | |
a22e2eb0 | 2592 | unsigned int err_mask = qc->err_mask; |
1da177e4 | 2593 | |
a7dac447 | 2594 | VPRINTK("ENTER, err_mask 0x%X\n", err_mask); |
e12669e7 | 2595 | |
246619da TH |
2596 | /* handle completion from new EH */ |
2597 | if (unlikely(qc->ap->ops->error_handler && | |
2598 | (err_mask || qc->flags & ATA_QCFLAG_SENSE_VALID))) { | |
2599 | ||
2600 | if (!(qc->flags & ATA_QCFLAG_SENSE_VALID)) { | |
2601 | /* FIXME: not quite right; we don't want the | |
2602 | * translation of taskfile registers into a | |
2603 | * sense descriptors, since that's only | |
2604 | * correct for ATA, not ATAPI | |
2605 | */ | |
750426aa | 2606 | ata_gen_passthru_sense(qc); |
246619da TH |
2607 | } |
2608 | ||
22aac089 TH |
2609 | /* SCSI EH automatically locks door if sdev->locked is |
2610 | * set. Sometimes door lock request continues to | |
2611 | * fail, for example, when no media is present. This | |
2612 | * creates a loop - SCSI EH issues door lock which | |
2613 | * fails and gets invoked again to acquire sense data | |
2614 | * for the failed command. | |
2615 | * | |
2616 | * If door lock fails, always clear sdev->locked to | |
2617 | * avoid this infinite loop. | |
2a5f07b5 TH |
2618 | * |
2619 | * This may happen before SCSI scan is complete. Make | |
2620 | * sure qc->dev->sdev isn't NULL before dereferencing. | |
22aac089 | 2621 | */ |
2a5f07b5 | 2622 | if (qc->cdb[0] == ALLOW_MEDIUM_REMOVAL && qc->dev->sdev) |
22aac089 TH |
2623 | qc->dev->sdev->locked = 0; |
2624 | ||
246619da | 2625 | qc->scsicmd->result = SAM_STAT_CHECK_CONDITION; |
2aa8f5d6 | 2626 | ata_qc_done(qc); |
246619da TH |
2627 | return; |
2628 | } | |
2629 | ||
2630 | /* successful completion or old EH failure path */ | |
a7dac447 | 2631 | if (unlikely(err_mask & AC_ERR_DEV)) { |
1da177e4 | 2632 | cmd->result = SAM_STAT_CHECK_CONDITION; |
c6e6e666 | 2633 | atapi_request_sense(qc); |
77853bf2 | 2634 | return; |
74e6c8c3 | 2635 | } else if (unlikely(err_mask)) { |
a7dac447 JG |
2636 | /* FIXME: not quite right; we don't want the |
2637 | * translation of taskfile registers into | |
2638 | * a sense descriptors, since that's only | |
2639 | * correct for ATA, not ATAPI | |
2640 | */ | |
750426aa | 2641 | ata_gen_passthru_sense(qc); |
74e6c8c3 | 2642 | } else { |
aa18da8b CH |
2643 | if (cmd->cmnd[0] == INQUIRY && (cmd->cmnd[1] & 0x03) == 0) |
2644 | atapi_fixup_inquiry(cmd); | |
1da177e4 LT |
2645 | cmd->result = SAM_STAT_GOOD; |
2646 | } | |
2647 | ||
2aa8f5d6 | 2648 | ata_qc_done(qc); |
1da177e4 LT |
2649 | } |
2650 | /** | |
2651 | * atapi_xlat - Initialize PACKET taskfile | |
2652 | * @qc: command structure to be initialized | |
1da177e4 LT |
2653 | * |
2654 | * LOCKING: | |
cca3974e | 2655 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
2656 | * |
2657 | * RETURNS: | |
2658 | * Zero on success, non-zero on failure. | |
2659 | */ | |
ad706991 | 2660 | static unsigned int atapi_xlat(struct ata_queued_cmd *qc) |
1da177e4 | 2661 | { |
542b1444 | 2662 | struct scsi_cmnd *scmd = qc->scsicmd; |
1da177e4 | 2663 | struct ata_device *dev = qc->dev; |
542b1444 | 2664 | int nodata = (scmd->sc_data_direction == DMA_NONE); |
5895ef9a | 2665 | int using_pio = !nodata && (dev->flags & ATA_DFLAG_PIO); |
2db78dd3 | 2666 | unsigned int nbytes; |
1da177e4 | 2667 | |
2e5704f6 TH |
2668 | memset(qc->cdb, 0, dev->cdb_len); |
2669 | memcpy(qc->cdb, scmd->cmnd, scmd->cmd_len); | |
1da177e4 LT |
2670 | |
2671 | qc->complete_fn = atapi_qc_complete; | |
2672 | ||
2673 | qc->tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; | |
542b1444 | 2674 | if (scmd->sc_data_direction == DMA_TO_DEVICE) { |
1da177e4 LT |
2675 | qc->tf.flags |= ATA_TFLAG_WRITE; |
2676 | DPRINTK("direction: write\n"); | |
2677 | } | |
2678 | ||
2679 | qc->tf.command = ATA_CMD_PACKET; | |
aacda375 | 2680 | ata_qc_set_pc_nbytes(qc); |
e00f1ff3 TH |
2681 | |
2682 | /* check whether ATAPI DMA is safe */ | |
5895ef9a | 2683 | if (!nodata && !using_pio && atapi_check_dma(qc)) |
e00f1ff3 | 2684 | using_pio = 1; |
1da177e4 | 2685 | |
e190222d TH |
2686 | /* Some controller variants snoop this value for Packet |
2687 | * transfers to do state machine and FIFO management. Thus we | |
2688 | * want to set it properly, and for DMA where it is | |
2689 | * effectively meaningless. | |
2690 | */ | |
aacda375 | 2691 | nbytes = min(ata_qc_raw_nbytes(qc), (unsigned int)63 * 1024); |
2db78dd3 | 2692 | |
e190222d TH |
2693 | /* Most ATAPI devices which honor transfer chunk size don't |
2694 | * behave according to the spec when odd chunk size which | |
2695 | * matches the transfer length is specified. If the number of | |
2696 | * bytes to transfer is 2n+1. According to the spec, what | |
2697 | * should happen is to indicate that 2n+1 is going to be | |
2698 | * transferred and transfer 2n+2 bytes where the last byte is | |
2699 | * padding. | |
2700 | * | |
2701 | * In practice, this doesn't happen. ATAPI devices first | |
2702 | * indicate and transfer 2n bytes and then indicate and | |
2703 | * transfer 2 bytes where the last byte is padding. | |
2704 | * | |
2705 | * This inconsistency confuses several controllers which | |
2706 | * perform PIO using DMA such as Intel AHCIs and sil3124/32. | |
2707 | * These controllers use actual number of transferred bytes to | |
8d1e02d1 | 2708 | * update DMA pointer and transfer of 4n+2 bytes make those |
e190222d TH |
2709 | * controller push DMA pointer by 4n+4 bytes because SATA data |
2710 | * FISes are aligned to 4 bytes. This causes data corruption | |
2711 | * and buffer overrun. | |
2712 | * | |
2713 | * Always setting nbytes to even number solves this problem | |
2714 | * because then ATAPI devices don't have to split data at 2n | |
2715 | * boundaries. | |
2716 | */ | |
2717 | if (nbytes & 0x1) | |
2718 | nbytes++; | |
2719 | ||
2db78dd3 AC |
2720 | qc->tf.lbam = (nbytes & 0xFF); |
2721 | qc->tf.lbah = (nbytes >> 8); | |
2722 | ||
5895ef9a TH |
2723 | if (nodata) |
2724 | qc->tf.protocol = ATAPI_PROT_NODATA; | |
2725 | else if (using_pio) | |
2726 | qc->tf.protocol = ATAPI_PROT_PIO; | |
2727 | else { | |
e00f1ff3 | 2728 | /* DMA data xfer */ |
0dc36888 | 2729 | qc->tf.protocol = ATAPI_PROT_DMA; |
1da177e4 LT |
2730 | qc->tf.feature |= ATAPI_PKT_DMA; |
2731 | ||
91163006 TH |
2732 | if ((dev->flags & ATA_DFLAG_DMADIR) && |
2733 | (scmd->sc_data_direction != DMA_TO_DEVICE)) | |
95de719a | 2734 | /* some SATA bridges need us to indicate data xfer direction */ |
1da177e4 | 2735 | qc->tf.feature |= ATAPI_DMADIR; |
1da177e4 LT |
2736 | } |
2737 | ||
2db78dd3 AC |
2738 | |
2739 | /* FIXME: We need to translate 0x05 READ_BLOCK_LIMITS to a MODE_SENSE | |
2740 | as ATAPI tape drives don't get this right otherwise */ | |
1da177e4 LT |
2741 | return 0; |
2742 | } | |
2743 | ||
2dcb407e | 2744 | static struct ata_device *ata_find_dev(struct ata_port *ap, int devno) |
ab5b3a5b | 2745 | { |
071f44b1 | 2746 | if (!sata_pmp_attached(ap)) { |
59a5e266 DC |
2747 | if (likely(devno >= 0 && |
2748 | devno < ata_link_max_devices(&ap->link))) | |
41bda9c9 TH |
2749 | return &ap->link.device[devno]; |
2750 | } else { | |
59a5e266 DC |
2751 | if (likely(devno >= 0 && |
2752 | devno < ap->nr_pmp_links)) | |
41bda9c9 TH |
2753 | return &ap->pmp_link[devno].device[0]; |
2754 | } | |
2755 | ||
ab5b3a5b TH |
2756 | return NULL; |
2757 | } | |
2758 | ||
2dcb407e JG |
2759 | static struct ata_device *__ata_scsi_find_dev(struct ata_port *ap, |
2760 | const struct scsi_device *scsidev) | |
ab5b3a5b | 2761 | { |
41bda9c9 TH |
2762 | int devno; |
2763 | ||
ab5b3a5b | 2764 | /* skip commands not addressed to targets we simulate */ |
071f44b1 | 2765 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
2766 | if (unlikely(scsidev->channel || scsidev->lun)) |
2767 | return NULL; | |
2768 | devno = scsidev->id; | |
2769 | } else { | |
2770 | if (unlikely(scsidev->id || scsidev->lun)) | |
2771 | return NULL; | |
2772 | devno = scsidev->channel; | |
2773 | } | |
ab5b3a5b | 2774 | |
41bda9c9 | 2775 | return ata_find_dev(ap, devno); |
ab5b3a5b TH |
2776 | } |
2777 | ||
1da177e4 LT |
2778 | /** |
2779 | * ata_scsi_find_dev - lookup ata_device from scsi_cmnd | |
2780 | * @ap: ATA port to which the device is attached | |
2781 | * @scsidev: SCSI device from which we derive the ATA device | |
2782 | * | |
2783 | * Given various information provided in struct scsi_cmnd, | |
2784 | * map that onto an ATA bus, and using that mapping | |
2785 | * determine which ata_device is associated with the | |
2786 | * SCSI command to be sent. | |
2787 | * | |
2788 | * LOCKING: | |
cca3974e | 2789 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
2790 | * |
2791 | * RETURNS: | |
2792 | * Associated ATA device, or %NULL if not found. | |
2793 | */ | |
ec811a94 | 2794 | struct ata_device * |
057ace5e | 2795 | ata_scsi_find_dev(struct ata_port *ap, const struct scsi_device *scsidev) |
1da177e4 | 2796 | { |
ab5b3a5b | 2797 | struct ata_device *dev = __ata_scsi_find_dev(ap, scsidev); |
1da177e4 | 2798 | |
2486fa56 | 2799 | if (unlikely(!dev || !ata_dev_enabled(dev))) |
1da177e4 LT |
2800 | return NULL; |
2801 | ||
1da177e4 LT |
2802 | return dev; |
2803 | } | |
2804 | ||
b095518e JG |
2805 | /* |
2806 | * ata_scsi_map_proto - Map pass-thru protocol value to taskfile value. | |
2807 | * @byte1: Byte 1 from pass-thru CDB. | |
2808 | * | |
2809 | * RETURNS: | |
2810 | * ATA_PROT_UNKNOWN if mapping failed/unimplemented, protocol otherwise. | |
2811 | */ | |
2812 | static u8 | |
2813 | ata_scsi_map_proto(u8 byte1) | |
2814 | { | |
2815 | switch((byte1 & 0x1e) >> 1) { | |
2dcb407e JG |
2816 | case 3: /* Non-data */ |
2817 | return ATA_PROT_NODATA; | |
2818 | ||
2819 | case 6: /* DMA */ | |
2820 | case 10: /* UDMA Data-in */ | |
2821 | case 11: /* UDMA Data-Out */ | |
2822 | return ATA_PROT_DMA; | |
2823 | ||
2824 | case 4: /* PIO Data-in */ | |
2825 | case 5: /* PIO Data-out */ | |
2826 | return ATA_PROT_PIO; | |
2827 | ||
ee7fb331 VK |
2828 | case 12: /* FPDMA */ |
2829 | return ATA_PROT_NCQ; | |
2830 | ||
2dcb407e JG |
2831 | case 0: /* Hard Reset */ |
2832 | case 1: /* SRST */ | |
2833 | case 8: /* Device Diagnostic */ | |
2834 | case 9: /* Device Reset */ | |
2835 | case 7: /* DMA Queued */ | |
2dcb407e JG |
2836 | case 15: /* Return Response Info */ |
2837 | default: /* Reserved */ | |
2838 | break; | |
b095518e JG |
2839 | } |
2840 | ||
2841 | return ATA_PROT_UNKNOWN; | |
2842 | } | |
2843 | ||
2844 | /** | |
2845 | * ata_scsi_pass_thru - convert ATA pass-thru CDB to taskfile | |
2846 | * @qc: command structure to be initialized | |
b095518e | 2847 | * |
b1ffbf85 | 2848 | * Handles either 12, 16, or 32-byte versions of the CDB. |
b095518e JG |
2849 | * |
2850 | * RETURNS: | |
2851 | * Zero on success, non-zero on failure. | |
2852 | */ | |
ad706991 | 2853 | static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc) |
b095518e JG |
2854 | { |
2855 | struct ata_taskfile *tf = &(qc->tf); | |
542b1444 | 2856 | struct scsi_cmnd *scmd = qc->scsicmd; |
f79d409f | 2857 | struct ata_device *dev = qc->dev; |
ad706991 | 2858 | const u8 *cdb = scmd->cmnd; |
bcfc867d | 2859 | u16 fp; |
b1ffbf85 | 2860 | u16 cdb_offset = 0; |
b095518e | 2861 | |
b1ffbf85 MI |
2862 | /* 7Fh variable length cmd means a ata pass-thru(32) */ |
2863 | if (cdb[0] == VARIABLE_LENGTH_CMD) | |
2864 | cdb_offset = 9; | |
2865 | ||
2866 | tf->protocol = ata_scsi_map_proto(cdb[1 + cdb_offset]); | |
2867 | if (tf->protocol == ATA_PROT_UNKNOWN) { | |
bcfc867d | 2868 | fp = 1; |
9a405257 | 2869 | goto invalid_fld; |
bcfc867d | 2870 | } |
8190bdb9 | 2871 | |
b1ffbf85 | 2872 | if (ata_is_ncq(tf->protocol) && (cdb[2 + cdb_offset] & 0x3) == 0) |
5b844b63 HR |
2873 | tf->protocol = ATA_PROT_NCQ_NODATA; |
2874 | ||
5f8e7f17 VK |
2875 | /* enable LBA */ |
2876 | tf->flags |= ATA_TFLAG_LBA; | |
2877 | ||
b095518e JG |
2878 | /* |
2879 | * 12 and 16 byte CDBs use different offsets to | |
2880 | * provide the various register values. | |
2881 | */ | |
542b1444 | 2882 | if (cdb[0] == ATA_16) { |
b095518e JG |
2883 | /* |
2884 | * 16-byte CDB - may contain extended commands. | |
2885 | * | |
2886 | * If that is the case, copy the upper byte register values. | |
2887 | */ | |
542b1444 TH |
2888 | if (cdb[1] & 0x01) { |
2889 | tf->hob_feature = cdb[3]; | |
2890 | tf->hob_nsect = cdb[5]; | |
2891 | tf->hob_lbal = cdb[7]; | |
2892 | tf->hob_lbam = cdb[9]; | |
2893 | tf->hob_lbah = cdb[11]; | |
b095518e JG |
2894 | tf->flags |= ATA_TFLAG_LBA48; |
2895 | } else | |
2896 | tf->flags &= ~ATA_TFLAG_LBA48; | |
2897 | ||
2898 | /* | |
2899 | * Always copy low byte, device and command registers. | |
2900 | */ | |
542b1444 TH |
2901 | tf->feature = cdb[4]; |
2902 | tf->nsect = cdb[6]; | |
2903 | tf->lbal = cdb[8]; | |
2904 | tf->lbam = cdb[10]; | |
2905 | tf->lbah = cdb[12]; | |
2906 | tf->device = cdb[13]; | |
2907 | tf->command = cdb[14]; | |
b1ffbf85 | 2908 | } else if (cdb[0] == ATA_12) { |
b095518e JG |
2909 | /* |
2910 | * 12-byte CDB - incapable of extended commands. | |
2911 | */ | |
2912 | tf->flags &= ~ATA_TFLAG_LBA48; | |
2913 | ||
542b1444 TH |
2914 | tf->feature = cdb[3]; |
2915 | tf->nsect = cdb[4]; | |
2916 | tf->lbal = cdb[5]; | |
2917 | tf->lbam = cdb[6]; | |
2918 | tf->lbah = cdb[7]; | |
2919 | tf->device = cdb[8]; | |
2920 | tf->command = cdb[9]; | |
b1ffbf85 MI |
2921 | } else { |
2922 | /* | |
2923 | * 32-byte CDB - may contain extended command fields. | |
2924 | * | |
2925 | * If that is the case, copy the upper byte register values. | |
2926 | */ | |
2927 | if (cdb[10] & 0x01) { | |
2928 | tf->hob_feature = cdb[20]; | |
2929 | tf->hob_nsect = cdb[22]; | |
2930 | tf->hob_lbal = cdb[16]; | |
2931 | tf->hob_lbam = cdb[15]; | |
2932 | tf->hob_lbah = cdb[14]; | |
2933 | tf->flags |= ATA_TFLAG_LBA48; | |
2934 | } else | |
2935 | tf->flags &= ~ATA_TFLAG_LBA48; | |
2936 | ||
2937 | tf->feature = cdb[21]; | |
2938 | tf->nsect = cdb[23]; | |
2939 | tf->lbal = cdb[19]; | |
2940 | tf->lbam = cdb[18]; | |
2941 | tf->lbah = cdb[17]; | |
2942 | tf->device = cdb[24]; | |
2943 | tf->command = cdb[25]; | |
2944 | tf->auxiliary = get_unaligned_be32(&cdb[28]); | |
b095518e | 2945 | } |
fa4453c4 | 2946 | |
179b310a HR |
2947 | /* For NCQ commands copy the tag value */ |
2948 | if (ata_is_ncq(tf->protocol)) | |
4e5b6260 | 2949 | tf->nsect = qc->hw_tag << 3; |
ee7fb331 | 2950 | |
fa4453c4 AL |
2951 | /* enforce correct master/slave bit */ |
2952 | tf->device = dev->devno ? | |
2953 | tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1; | |
b095518e | 2954 | |
bd30add8 | 2955 | switch (tf->command) { |
295124dc | 2956 | /* READ/WRITE LONG use a non-standard sect_size */ |
bd30add8 TH |
2957 | case ATA_CMD_READ_LONG: |
2958 | case ATA_CMD_READ_LONG_ONCE: | |
2959 | case ATA_CMD_WRITE_LONG: | |
2960 | case ATA_CMD_WRITE_LONG_ONCE: | |
bcfc867d HR |
2961 | if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1) { |
2962 | fp = 1; | |
bd30add8 | 2963 | goto invalid_fld; |
bcfc867d | 2964 | } |
bd30add8 | 2965 | qc->sect_size = scsi_bufflen(scmd); |
295124dc GG |
2966 | break; |
2967 | ||
2968 | /* commands using reported Logical Block size (e.g. 512 or 4K) */ | |
2969 | case ATA_CMD_CFA_WRITE_NE: | |
2970 | case ATA_CMD_CFA_TRANS_SECT: | |
2971 | case ATA_CMD_CFA_WRITE_MULT_NE: | |
2972 | /* XXX: case ATA_CMD_CFA_WRITE_SECTORS_WITHOUT_ERASE: */ | |
2973 | case ATA_CMD_READ: | |
2974 | case ATA_CMD_READ_EXT: | |
2975 | case ATA_CMD_READ_QUEUED: | |
2976 | /* XXX: case ATA_CMD_READ_QUEUED_EXT: */ | |
2977 | case ATA_CMD_FPDMA_READ: | |
2978 | case ATA_CMD_READ_MULTI: | |
2979 | case ATA_CMD_READ_MULTI_EXT: | |
2980 | case ATA_CMD_PIO_READ: | |
2981 | case ATA_CMD_PIO_READ_EXT: | |
2982 | case ATA_CMD_READ_STREAM_DMA_EXT: | |
2983 | case ATA_CMD_READ_STREAM_EXT: | |
2984 | case ATA_CMD_VERIFY: | |
2985 | case ATA_CMD_VERIFY_EXT: | |
2986 | case ATA_CMD_WRITE: | |
2987 | case ATA_CMD_WRITE_EXT: | |
2988 | case ATA_CMD_WRITE_FUA_EXT: | |
2989 | case ATA_CMD_WRITE_QUEUED: | |
2990 | case ATA_CMD_WRITE_QUEUED_FUA_EXT: | |
2991 | case ATA_CMD_FPDMA_WRITE: | |
2992 | case ATA_CMD_WRITE_MULTI: | |
2993 | case ATA_CMD_WRITE_MULTI_EXT: | |
2994 | case ATA_CMD_WRITE_MULTI_FUA_EXT: | |
2995 | case ATA_CMD_PIO_WRITE: | |
2996 | case ATA_CMD_PIO_WRITE_EXT: | |
2997 | case ATA_CMD_WRITE_STREAM_DMA_EXT: | |
2998 | case ATA_CMD_WRITE_STREAM_EXT: | |
2999 | qc->sect_size = scmd->device->sector_size; | |
3000 | break; | |
3001 | ||
3002 | /* Everything else uses 512 byte "sectors" */ | |
3003 | default: | |
3004 | qc->sect_size = ATA_SECT_SIZE; | |
bd30add8 TH |
3005 | } |
3006 | ||
3007 | /* | |
3008 | * Set flags so that all registers will be written, pass on | |
3009 | * write indication (used for PIO/DMA setup), result TF is | |
3010 | * copied back and we don't whine too much about its failure. | |
3011 | */ | |
bc496ed0 | 3012 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; |
bd30add8 TH |
3013 | if (scmd->sc_data_direction == DMA_TO_DEVICE) |
3014 | tf->flags |= ATA_TFLAG_WRITE; | |
3015 | ||
3016 | qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET; | |
3017 | ||
3018 | /* | |
3019 | * Set transfer length. | |
3020 | * | |
3021 | * TODO: find out if we need to do more here to | |
3022 | * cover scatter/gather case. | |
3023 | */ | |
3024 | ata_qc_set_pc_nbytes(qc); | |
3025 | ||
3026 | /* We may not issue DMA commands if no DMA mode is set */ | |
bcfc867d HR |
3027 | if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0) { |
3028 | fp = 1; | |
bd30add8 | 3029 | goto invalid_fld; |
2c1ec6fd EB |
3030 | } |
3031 | ||
3032 | /* We may not issue NCQ commands to devices not supporting NCQ */ | |
3033 | if (ata_is_ncq(tf->protocol) && !ata_ncq_enabled(dev)) { | |
3034 | fp = 1; | |
3035 | goto invalid_fld; | |
bcfc867d | 3036 | } |
bd30add8 | 3037 | |
1dce589c | 3038 | /* sanity check for pio multi commands */ |
bcfc867d HR |
3039 | if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf)) { |
3040 | fp = 1; | |
1dce589c | 3041 | goto invalid_fld; |
bcfc867d | 3042 | } |
1dce589c AL |
3043 | |
3044 | if (is_multi_taskfile(tf)) { | |
3045 | unsigned int multi_count = 1 << (cdb[1] >> 5); | |
3046 | ||
3047 | /* compare the passed through multi_count | |
3048 | * with the cached multi_count of libata | |
3049 | */ | |
3050 | if (multi_count != dev->multi_count) | |
a9a79dfe JP |
3051 | ata_dev_warn(dev, "invalid multi_count %u ignored\n", |
3052 | multi_count); | |
d26fc955 | 3053 | } |
1dce589c | 3054 | |
b095518e JG |
3055 | /* |
3056 | * Filter SET_FEATURES - XFER MODE command -- otherwise, | |
3057 | * SET_FEATURES - XFER MODE must be preceded/succeeded | |
3058 | * by an update to hardware-specific registers for each | |
3059 | * controller (i.e. the reason for ->set_piomode(), | |
3060 | * ->set_dmamode(), and ->post_set_mode() hooks). | |
3061 | */ | |
bd30add8 | 3062 | if (tf->command == ATA_CMD_SET_FEATURES && |
bcfc867d HR |
3063 | tf->feature == SETFEATURES_XFER) { |
3064 | fp = (cdb[0] == ATA_16) ? 4 : 3; | |
9a405257 | 3065 | goto invalid_fld; |
bcfc867d | 3066 | } |
b095518e JG |
3067 | |
3068 | /* | |
bd30add8 TH |
3069 | * Filter TPM commands by default. These provide an |
3070 | * essentially uncontrolled encrypted "back door" between | |
3071 | * applications and the disk. Set libata.allow_tpm=1 if you | |
3072 | * have a real reason for wanting to use them. This ensures | |
3073 | * that installed software cannot easily mess stuff up without | |
3074 | * user intent. DVR type users will probably ship with this enabled | |
3075 | * for movie content management. | |
b095518e | 3076 | * |
bd30add8 TH |
3077 | * Note that for ATA8 we can issue a DCS change and DCS freeze lock |
3078 | * for this and should do in future but that it is not sufficient as | |
3079 | * DCS is an optional feature set. Thus we also do the software filter | |
3080 | * so that we comply with the TC consortium stated goal that the user | |
3081 | * can turn off TC features of their system. | |
b095518e | 3082 | */ |
bcfc867d HR |
3083 | if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm) { |
3084 | fp = (cdb[0] == ATA_16) ? 14 : 9; | |
bd30add8 | 3085 | goto invalid_fld; |
bcfc867d | 3086 | } |
e61e0672 | 3087 | |
b095518e | 3088 | return 0; |
9a405257 TH |
3089 | |
3090 | invalid_fld: | |
0df10b84 | 3091 | ata_scsi_set_invalid_field(dev, scmd, fp, 0xff); |
9a405257 | 3092 | return 1; |
b095518e JG |
3093 | } |
3094 | ||
9379e6b8 ST |
3095 | /** |
3096 | * ata_format_dsm_trim_descr() - SATL Write Same to DSM Trim | |
3097 | * @cmd: SCSI command being translated | |
ef2d7392 | 3098 | * @trmax: Maximum number of entries that will fit in sector_size bytes. |
9379e6b8 | 3099 | * @sector: Starting sector |
7b203094 | 3100 | * @count: Total Range of request in logical sectors |
9379e6b8 ST |
3101 | * |
3102 | * Rewrite the WRITE SAME descriptor to be a DSM TRIM little-endian formatted | |
3103 | * descriptor. | |
3104 | * | |
3105 | * Upto 64 entries of the format: | |
3106 | * 63:48 Range Length | |
3107 | * 47:0 LBA | |
3108 | * | |
3109 | * Range Length of 0 is ignored. | |
3110 | * LBA's should be sorted order and not overlap. | |
3111 | * | |
3112 | * NOTE: this is the same format as ADD LBA(S) TO NV CACHE PINNED SET | |
ef2d7392 ST |
3113 | * |
3114 | * Return: Number of bytes copied into sglist. | |
9379e6b8 | 3115 | */ |
ef2d7392 ST |
3116 | static size_t ata_format_dsm_trim_descr(struct scsi_cmnd *cmd, u32 trmax, |
3117 | u64 sector, u32 count) | |
3118 | { | |
3119 | struct scsi_device *sdp = cmd->device; | |
3120 | size_t len = sdp->sector_size; | |
3121 | size_t r; | |
3122 | __le64 *buf; | |
3123 | u32 i = 0; | |
9379e6b8 ST |
3124 | unsigned long flags; |
3125 | ||
ef2d7392 ST |
3126 | WARN_ON(len > ATA_SCSI_RBUF_SIZE); |
3127 | ||
3128 | if (len > ATA_SCSI_RBUF_SIZE) | |
3129 | len = ATA_SCSI_RBUF_SIZE; | |
9379e6b8 ST |
3130 | |
3131 | spin_lock_irqsave(&ata_scsi_rbuf_lock, flags); | |
ef2d7392 ST |
3132 | buf = ((void *)ata_scsi_rbuf); |
3133 | memset(buf, 0, len); | |
3134 | while (i < trmax) { | |
9379e6b8 ST |
3135 | u64 entry = sector | |
3136 | ((u64)(count > 0xffff ? 0xffff : count) << 48); | |
ef2d7392 | 3137 | buf[i++] = __cpu_to_le64(entry); |
9379e6b8 ST |
3138 | if (count <= 0xffff) |
3139 | break; | |
3140 | count -= 0xffff; | |
3141 | sector += 0xffff; | |
3142 | } | |
ef2d7392 | 3143 | r = sg_copy_from_buffer(scsi_sglist(cmd), scsi_sg_count(cmd), buf, len); |
9379e6b8 ST |
3144 | spin_unlock_irqrestore(&ata_scsi_rbuf_lock, flags); |
3145 | ||
ef2d7392 | 3146 | return r; |
9379e6b8 ST |
3147 | } |
3148 | ||
7b203094 ST |
3149 | /** |
3150 | * ata_scsi_write_same_xlat() - SATL Write Same to ATA SCT Write Same | |
3151 | * @qc: Command to be translated | |
3152 | * | |
3153 | * Translate a SCSI WRITE SAME command to be either a DSM TRIM command or | |
3154 | * an SCT Write Same command. | |
6baf20bc MCC |
3155 | * Based on WRITE SAME has the UNMAP flag: |
3156 | * | |
3157 | * - When set translate to DSM TRIM | |
3158 | * - When clear translate to SCT Write Same | |
7b203094 | 3159 | */ |
18f0f978 CH |
3160 | static unsigned int ata_scsi_write_same_xlat(struct ata_queued_cmd *qc) |
3161 | { | |
3162 | struct ata_taskfile *tf = &qc->tf; | |
3163 | struct scsi_cmnd *scmd = qc->scsicmd; | |
ef2d7392 ST |
3164 | struct scsi_device *sdp = scmd->device; |
3165 | size_t len = sdp->sector_size; | |
18f0f978 CH |
3166 | struct ata_device *dev = qc->dev; |
3167 | const u8 *cdb = scmd->cmnd; | |
3168 | u64 block; | |
3169 | u32 n_block; | |
ef2d7392 | 3170 | const u32 trmax = len >> 3; |
18f0f978 | 3171 | u32 size; |
bcfc867d | 3172 | u16 fp; |
0df10b84 | 3173 | u8 bp = 0xff; |
7b203094 | 3174 | u8 unmap = cdb[1] & 0x8; |
18f0f978 CH |
3175 | |
3176 | /* we may not issue DMA commands if no DMA mode is set */ | |
3177 | if (unlikely(!dev->dma_mode)) | |
bcfc867d | 3178 | goto invalid_opcode; |
18f0f978 | 3179 | |
c6ade20f CH |
3180 | /* |
3181 | * We only allow sending this command through the block layer, | |
3182 | * as it modifies the DATA OUT buffer, which would corrupt user | |
3183 | * memory for SG_IO commands. | |
3184 | */ | |
3185 | if (unlikely(blk_rq_is_passthrough(scmd->request))) | |
3186 | goto invalid_opcode; | |
3187 | ||
bcfc867d HR |
3188 | if (unlikely(scmd->cmd_len < 16)) { |
3189 | fp = 15; | |
18f0f978 | 3190 | goto invalid_fld; |
bcfc867d | 3191 | } |
18f0f978 CH |
3192 | scsi_16_lba_len(cdb, &block, &n_block); |
3193 | ||
63ccc191 CH |
3194 | if (!unmap || |
3195 | (dev->horkage & ATA_HORKAGE_NOTRIM) || | |
3196 | !ata_id_has_trim(dev->id)) { | |
3197 | fp = 1; | |
3198 | bp = 3; | |
3199 | goto invalid_fld; | |
3200 | } | |
3201 | /* If the request is too large the cmd is invalid */ | |
3202 | if (n_block > 0xffff * trmax) { | |
3203 | fp = 2; | |
3204 | goto invalid_fld; | |
bcfc867d | 3205 | } |
18f0f978 CH |
3206 | |
3207 | /* | |
3208 | * WRITE SAME always has a sector sized buffer as payload, this | |
3209 | * should never be a multiple entry S/G list. | |
3210 | */ | |
3211 | if (!scsi_sg_count(scmd)) | |
bcfc867d | 3212 | goto invalid_param_len; |
18f0f978 | 3213 | |
ef2d7392 ST |
3214 | /* |
3215 | * size must match sector size in bytes | |
3216 | * For DATA SET MANAGEMENT TRIM in ACS-2 nsect (aka count) | |
3217 | * is defined as number of 512 byte blocks to be transferred. | |
3218 | */ | |
87fb6c31 | 3219 | |
63ccc191 CH |
3220 | size = ata_format_dsm_trim_descr(scmd, trmax, block, n_block); |
3221 | if (size != len) | |
3222 | goto invalid_param_len; | |
3223 | ||
3224 | if (ata_ncq_enabled(dev) && ata_fpdma_dsm_supported(dev)) { | |
3225 | /* Newer devices support queued TRIM commands */ | |
3226 | tf->protocol = ATA_PROT_NCQ; | |
3227 | tf->command = ATA_CMD_FPDMA_SEND; | |
3228 | tf->hob_nsect = ATA_SUBCMD_FPDMA_SEND_DSM & 0x1f; | |
4e5b6260 | 3229 | tf->nsect = qc->hw_tag << 3; |
63ccc191 CH |
3230 | tf->hob_feature = (size / 512) >> 8; |
3231 | tf->feature = size / 512; | |
3232 | ||
3233 | tf->auxiliary = 1; | |
3234 | } else { | |
7b203094 | 3235 | tf->protocol = ATA_PROT_DMA; |
63ccc191 CH |
3236 | tf->hob_feature = 0; |
3237 | tf->feature = ATA_DSM_TRIM; | |
3238 | tf->hob_nsect = (size / 512) >> 8; | |
3239 | tf->nsect = size / 512; | |
3240 | tf->command = ATA_CMD_DSM; | |
87fb6c31 MC |
3241 | } |
3242 | ||
18f0f978 CH |
3243 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 | |
3244 | ATA_TFLAG_WRITE; | |
3245 | ||
3246 | ata_qc_set_pc_nbytes(qc); | |
3247 | ||
3248 | return 0; | |
3249 | ||
bcfc867d | 3250 | invalid_fld: |
0df10b84 | 3251 | ata_scsi_set_invalid_field(dev, scmd, fp, bp); |
bcfc867d HR |
3252 | return 1; |
3253 | invalid_param_len: | |
3254 | /* "Parameter list length error" */ | |
3255 | ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
3256 | return 1; | |
3257 | invalid_opcode: | |
3258 | /* "Invalid command operation code" */ | |
3259 | ata_scsi_set_sense(dev, scmd, ILLEGAL_REQUEST, 0x20, 0x0); | |
18f0f978 CH |
3260 | return 1; |
3261 | } | |
3262 | ||
7b203094 ST |
3263 | /** |
3264 | * ata_scsiop_maint_in - Simulate a subset of MAINTENANCE_IN | |
3265 | * @args: device MAINTENANCE_IN data / SCSI command of interest. | |
3266 | * @rbuf: Response buffer, to which simulated SCSI cmd output is sent. | |
3267 | * | |
3268 | * Yields a subset to satisfy scsi_report_opcode() | |
3269 | * | |
3270 | * LOCKING: | |
3271 | * spin_lock_irqsave(host lock) | |
3272 | */ | |
3273 | static unsigned int ata_scsiop_maint_in(struct ata_scsi_args *args, u8 *rbuf) | |
3274 | { | |
3275 | struct ata_device *dev = args->dev; | |
3276 | u8 *cdb = args->cmd->cmnd; | |
3277 | u8 supported = 0; | |
3278 | unsigned int err = 0; | |
3279 | ||
3280 | if (cdb[2] != 1) { | |
3281 | ata_dev_warn(dev, "invalid command format %d\n", cdb[2]); | |
3282 | err = 2; | |
3283 | goto out; | |
3284 | } | |
3285 | switch (cdb[3]) { | |
3286 | case INQUIRY: | |
3287 | case MODE_SENSE: | |
3288 | case MODE_SENSE_10: | |
3289 | case READ_CAPACITY: | |
3290 | case SERVICE_ACTION_IN_16: | |
3291 | case REPORT_LUNS: | |
3292 | case REQUEST_SENSE: | |
3293 | case SYNCHRONIZE_CACHE: | |
3294 | case REZERO_UNIT: | |
3295 | case SEEK_6: | |
3296 | case SEEK_10: | |
3297 | case TEST_UNIT_READY: | |
3298 | case SEND_DIAGNOSTIC: | |
3299 | case MAINTENANCE_IN: | |
3300 | case READ_6: | |
3301 | case READ_10: | |
3302 | case READ_16: | |
3303 | case WRITE_6: | |
3304 | case WRITE_10: | |
3305 | case WRITE_16: | |
3306 | case ATA_12: | |
3307 | case ATA_16: | |
3308 | case VERIFY: | |
3309 | case VERIFY_16: | |
3310 | case MODE_SELECT: | |
3311 | case MODE_SELECT_10: | |
3312 | case START_STOP: | |
3313 | supported = 3; | |
3314 | break; | |
7b203094 ST |
3315 | case ZBC_IN: |
3316 | case ZBC_OUT: | |
3317 | if (ata_id_zoned_cap(dev->id) || | |
3318 | dev->class == ATA_DEV_ZAC) | |
3319 | supported = 3; | |
3320 | break; | |
818831c8 CH |
3321 | case SECURITY_PROTOCOL_IN: |
3322 | case SECURITY_PROTOCOL_OUT: | |
3323 | if (dev->flags & ATA_DFLAG_TRUSTED) | |
3324 | supported = 3; | |
3325 | break; | |
7b203094 ST |
3326 | default: |
3327 | break; | |
3328 | } | |
3329 | out: | |
3330 | rbuf[1] = supported; /* supported */ | |
3331 | return err; | |
3332 | } | |
3333 | ||
28a3fc22 HR |
3334 | /** |
3335 | * ata_scsi_report_zones_complete - convert ATA output | |
3336 | * @qc: command structure returning the data | |
3337 | * | |
3338 | * Convert T-13 little-endian field representation into | |
3339 | * T-10 big-endian field representation. | |
3340 | * What a mess. | |
3341 | */ | |
3342 | static void ata_scsi_report_zones_complete(struct ata_queued_cmd *qc) | |
3343 | { | |
3344 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3345 | struct sg_mapping_iter miter; | |
3346 | unsigned long flags; | |
3347 | unsigned int bytes = 0; | |
3348 | ||
3349 | sg_miter_start(&miter, scsi_sglist(scmd), scsi_sg_count(scmd), | |
3350 | SG_MITER_TO_SG | SG_MITER_ATOMIC); | |
3351 | ||
3352 | local_irq_save(flags); | |
3353 | while (sg_miter_next(&miter)) { | |
3354 | unsigned int offset = 0; | |
3355 | ||
3356 | if (bytes == 0) { | |
3357 | char *hdr; | |
3358 | u32 list_length; | |
3359 | u64 max_lba, opt_lba; | |
3360 | u16 same; | |
3361 | ||
3362 | /* Swizzle header */ | |
3363 | hdr = miter.addr; | |
3364 | list_length = get_unaligned_le32(&hdr[0]); | |
3365 | same = get_unaligned_le16(&hdr[4]); | |
3366 | max_lba = get_unaligned_le64(&hdr[8]); | |
3367 | opt_lba = get_unaligned_le64(&hdr[16]); | |
3368 | put_unaligned_be32(list_length, &hdr[0]); | |
3369 | hdr[4] = same & 0xf; | |
3370 | put_unaligned_be64(max_lba, &hdr[8]); | |
3371 | put_unaligned_be64(opt_lba, &hdr[16]); | |
3372 | offset += 64; | |
3373 | bytes += 64; | |
3374 | } | |
3375 | while (offset < miter.length) { | |
3376 | char *rec; | |
3377 | u8 cond, type, non_seq, reset; | |
3378 | u64 size, start, wp; | |
3379 | ||
3380 | /* Swizzle zone descriptor */ | |
3381 | rec = miter.addr + offset; | |
3382 | type = rec[0] & 0xf; | |
3383 | cond = (rec[1] >> 4) & 0xf; | |
3384 | non_seq = (rec[1] & 2); | |
3385 | reset = (rec[1] & 1); | |
3386 | size = get_unaligned_le64(&rec[8]); | |
3387 | start = get_unaligned_le64(&rec[16]); | |
3388 | wp = get_unaligned_le64(&rec[24]); | |
3389 | rec[0] = type; | |
3390 | rec[1] = (cond << 4) | non_seq | reset; | |
3391 | put_unaligned_be64(size, &rec[8]); | |
3392 | put_unaligned_be64(start, &rec[16]); | |
3393 | put_unaligned_be64(wp, &rec[24]); | |
3394 | WARN_ON(offset + 64 > miter.length); | |
3395 | offset += 64; | |
3396 | bytes += 64; | |
3397 | } | |
3398 | } | |
3399 | sg_miter_stop(&miter); | |
3400 | local_irq_restore(flags); | |
3401 | ||
3402 | ata_scsi_qc_complete(qc); | |
3403 | } | |
3404 | ||
3405 | static unsigned int ata_scsi_zbc_in_xlat(struct ata_queued_cmd *qc) | |
3406 | { | |
3407 | struct ata_taskfile *tf = &qc->tf; | |
3408 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3409 | const u8 *cdb = scmd->cmnd; | |
3410 | u16 sect, fp = (u16)-1; | |
3411 | u8 sa, options, bp = 0xff; | |
3412 | u64 block; | |
3413 | u32 n_block; | |
3414 | ||
3415 | if (unlikely(scmd->cmd_len < 16)) { | |
3416 | ata_dev_warn(qc->dev, "invalid cdb length %d\n", | |
3417 | scmd->cmd_len); | |
3418 | fp = 15; | |
3419 | goto invalid_fld; | |
3420 | } | |
3421 | scsi_16_lba_len(cdb, &block, &n_block); | |
3422 | if (n_block != scsi_bufflen(scmd)) { | |
3423 | ata_dev_warn(qc->dev, "non-matching transfer count (%d/%d)\n", | |
3424 | n_block, scsi_bufflen(scmd)); | |
3425 | goto invalid_param_len; | |
3426 | } | |
3427 | sa = cdb[1] & 0x1f; | |
3428 | if (sa != ZI_REPORT_ZONES) { | |
3429 | ata_dev_warn(qc->dev, "invalid service action %d\n", sa); | |
3430 | fp = 1; | |
3431 | goto invalid_fld; | |
3432 | } | |
3433 | /* | |
3434 | * ZAC allows only for transfers in 512 byte blocks, | |
3435 | * and uses a 16 bit value for the transfer count. | |
3436 | */ | |
3437 | if ((n_block / 512) > 0xffff || n_block < 512 || (n_block % 512)) { | |
3438 | ata_dev_warn(qc->dev, "invalid transfer count %d\n", n_block); | |
3439 | goto invalid_param_len; | |
3440 | } | |
3441 | sect = n_block / 512; | |
3f17422b | 3442 | options = cdb[14] & 0xbf; |
28a3fc22 HR |
3443 | |
3444 | if (ata_ncq_enabled(qc->dev) && | |
3445 | ata_fpdma_zac_mgmt_in_supported(qc->dev)) { | |
3446 | tf->protocol = ATA_PROT_NCQ; | |
3447 | tf->command = ATA_CMD_FPDMA_RECV; | |
3448 | tf->hob_nsect = ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN & 0x1f; | |
4e5b6260 | 3449 | tf->nsect = qc->hw_tag << 3; |
28a3fc22 HR |
3450 | tf->feature = sect & 0xff; |
3451 | tf->hob_feature = (sect >> 8) & 0xff; | |
3f17422b | 3452 | tf->auxiliary = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES | (options << 8); |
28a3fc22 HR |
3453 | } else { |
3454 | tf->command = ATA_CMD_ZAC_MGMT_IN; | |
3455 | tf->feature = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES; | |
3456 | tf->protocol = ATA_PROT_DMA; | |
3457 | tf->hob_feature = options; | |
3458 | tf->hob_nsect = (sect >> 8) & 0xff; | |
3459 | tf->nsect = sect & 0xff; | |
3460 | } | |
3461 | tf->device = ATA_LBA; | |
3462 | tf->lbah = (block >> 16) & 0xff; | |
3463 | tf->lbam = (block >> 8) & 0xff; | |
3464 | tf->lbal = block & 0xff; | |
3465 | tf->hob_lbah = (block >> 40) & 0xff; | |
3466 | tf->hob_lbam = (block >> 32) & 0xff; | |
3467 | tf->hob_lbal = (block >> 24) & 0xff; | |
3468 | ||
3469 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48; | |
3470 | qc->flags |= ATA_QCFLAG_RESULT_TF; | |
3471 | ||
3472 | ata_qc_set_pc_nbytes(qc); | |
3473 | ||
3474 | qc->complete_fn = ata_scsi_report_zones_complete; | |
3475 | ||
3476 | return 0; | |
3477 | ||
3478 | invalid_fld: | |
3479 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); | |
3480 | return 1; | |
3481 | ||
3482 | invalid_param_len: | |
3483 | /* "Parameter list length error" */ | |
3484 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
3485 | return 1; | |
3486 | } | |
3487 | ||
27708a95 HR |
3488 | static unsigned int ata_scsi_zbc_out_xlat(struct ata_queued_cmd *qc) |
3489 | { | |
3490 | struct ata_taskfile *tf = &qc->tf; | |
3491 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3492 | struct ata_device *dev = qc->dev; | |
3493 | const u8 *cdb = scmd->cmnd; | |
2950cefa | 3494 | u8 all, sa; |
27708a95 HR |
3495 | u64 block; |
3496 | u32 n_block; | |
3497 | u16 fp = (u16)-1; | |
3498 | ||
3499 | if (unlikely(scmd->cmd_len < 16)) { | |
3500 | fp = 15; | |
3501 | goto invalid_fld; | |
3502 | } | |
3503 | ||
3504 | sa = cdb[1] & 0x1f; | |
3505 | if ((sa != ZO_CLOSE_ZONE) && (sa != ZO_FINISH_ZONE) && | |
3506 | (sa != ZO_OPEN_ZONE) && (sa != ZO_RESET_WRITE_POINTER)) { | |
3507 | fp = 1; | |
3508 | goto invalid_fld; | |
3509 | } | |
3510 | ||
3511 | scsi_16_lba_len(cdb, &block, &n_block); | |
3512 | if (n_block) { | |
3513 | /* | |
3514 | * ZAC MANAGEMENT OUT doesn't define any length | |
3515 | */ | |
3516 | goto invalid_param_len; | |
3517 | } | |
27708a95 | 3518 | |
2950cefa | 3519 | all = cdb[14] & 0x1; |
6edf1d4c DLM |
3520 | if (all) { |
3521 | /* | |
3522 | * Ignore the block address (zone ID) as defined by ZBC. | |
3523 | */ | |
3524 | block = 0; | |
3525 | } else if (block >= dev->n_sectors) { | |
b320a0a9 DLM |
3526 | /* |
3527 | * Block must be a valid zone ID (a zone start LBA). | |
3528 | */ | |
3529 | fp = 2; | |
3530 | goto invalid_fld; | |
3531 | } | |
27708a95 | 3532 | |
284b3b77 HR |
3533 | if (ata_ncq_enabled(qc->dev) && |
3534 | ata_fpdma_zac_mgmt_out_supported(qc->dev)) { | |
5b844b63 | 3535 | tf->protocol = ATA_PROT_NCQ_NODATA; |
284b3b77 | 3536 | tf->command = ATA_CMD_NCQ_NON_DATA; |
ee194b75 | 3537 | tf->feature = ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT; |
4e5b6260 | 3538 | tf->nsect = qc->hw_tag << 3; |
2950cefa | 3539 | tf->auxiliary = sa | ((u16)all << 8); |
284b3b77 HR |
3540 | } else { |
3541 | tf->protocol = ATA_PROT_NODATA; | |
3542 | tf->command = ATA_CMD_ZAC_MGMT_OUT; | |
3543 | tf->feature = sa; | |
2950cefa | 3544 | tf->hob_feature = all; |
284b3b77 | 3545 | } |
27708a95 HR |
3546 | tf->lbah = (block >> 16) & 0xff; |
3547 | tf->lbam = (block >> 8) & 0xff; | |
3548 | tf->lbal = block & 0xff; | |
3549 | tf->hob_lbah = (block >> 40) & 0xff; | |
3550 | tf->hob_lbam = (block >> 32) & 0xff; | |
3551 | tf->hob_lbal = (block >> 24) & 0xff; | |
3552 | tf->device = ATA_LBA; | |
3553 | tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48; | |
3554 | ||
3555 | return 0; | |
3556 | ||
18f0f978 | 3557 | invalid_fld: |
27708a95 HR |
3558 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff); |
3559 | return 1; | |
27708a95 HR |
3560 | invalid_param_len: |
3561 | /* "Parameter list length error" */ | |
3562 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); | |
18f0f978 CH |
3563 | return 1; |
3564 | } | |
3565 | ||
1b26d29c PB |
3566 | /** |
3567 | * ata_mselect_caching - Simulate MODE SELECT for caching info page | |
3568 | * @qc: Storage for translated ATA taskfile | |
3569 | * @buf: input buffer | |
3570 | * @len: number of valid bytes in the input buffer | |
7780081c | 3571 | * @fp: out parameter for the failed field on error |
1b26d29c PB |
3572 | * |
3573 | * Prepare a taskfile to modify caching information for the device. | |
3574 | * | |
3575 | * LOCKING: | |
3576 | * None. | |
3577 | */ | |
3578 | static int ata_mselect_caching(struct ata_queued_cmd *qc, | |
7780081c | 3579 | const u8 *buf, int len, u16 *fp) |
1b26d29c PB |
3580 | { |
3581 | struct ata_taskfile *tf = &qc->tf; | |
3582 | struct ata_device *dev = qc->dev; | |
d7372cb6 | 3583 | u8 mpage[CACHE_MPAGE_LEN]; |
1b26d29c | 3584 | u8 wce; |
7780081c | 3585 | int i; |
1b26d29c PB |
3586 | |
3587 | /* | |
3588 | * The first two bytes of def_cache_mpage are a header, so offsets | |
3589 | * in mpage are off by 2 compared to buf. Same for len. | |
3590 | */ | |
3591 | ||
7780081c HR |
3592 | if (len != CACHE_MPAGE_LEN - 2) { |
3593 | if (len < CACHE_MPAGE_LEN - 2) | |
3594 | *fp = len; | |
3595 | else | |
3596 | *fp = CACHE_MPAGE_LEN - 2; | |
1b26d29c | 3597 | return -EINVAL; |
7780081c | 3598 | } |
1b26d29c PB |
3599 | |
3600 | wce = buf[0] & (1 << 2); | |
3601 | ||
3602 | /* | |
3603 | * Check that read-only bits are not modified. | |
3604 | */ | |
3605 | ata_msense_caching(dev->id, mpage, false); | |
7780081c HR |
3606 | for (i = 0; i < CACHE_MPAGE_LEN - 2; i++) { |
3607 | if (i == 0) | |
3608 | continue; | |
3609 | if (mpage[i + 2] != buf[i]) { | |
3610 | *fp = i; | |
3611 | return -EINVAL; | |
3612 | } | |
3613 | } | |
1b26d29c PB |
3614 | |
3615 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR; | |
3616 | tf->protocol = ATA_PROT_NODATA; | |
3617 | tf->nsect = 0; | |
3618 | tf->command = ATA_CMD_SET_FEATURES; | |
3619 | tf->feature = wce ? SETFEATURES_WC_ON : SETFEATURES_WC_OFF; | |
3620 | return 0; | |
3621 | } | |
3622 | ||
06dbde5f HR |
3623 | /** |
3624 | * ata_mselect_control - Simulate MODE SELECT for control page | |
3625 | * @qc: Storage for translated ATA taskfile | |
3626 | * @buf: input buffer | |
3627 | * @len: number of valid bytes in the input buffer | |
7780081c | 3628 | * @fp: out parameter for the failed field on error |
06dbde5f HR |
3629 | * |
3630 | * Prepare a taskfile to modify caching information for the device. | |
3631 | * | |
3632 | * LOCKING: | |
3633 | * None. | |
3634 | */ | |
3635 | static int ata_mselect_control(struct ata_queued_cmd *qc, | |
7780081c | 3636 | const u8 *buf, int len, u16 *fp) |
06dbde5f HR |
3637 | { |
3638 | struct ata_device *dev = qc->dev; | |
d7372cb6 | 3639 | u8 mpage[CONTROL_MPAGE_LEN]; |
06dbde5f | 3640 | u8 d_sense; |
7780081c | 3641 | int i; |
06dbde5f HR |
3642 | |
3643 | /* | |
3644 | * The first two bytes of def_control_mpage are a header, so offsets | |
3645 | * in mpage are off by 2 compared to buf. Same for len. | |
3646 | */ | |
3647 | ||
7780081c HR |
3648 | if (len != CONTROL_MPAGE_LEN - 2) { |
3649 | if (len < CONTROL_MPAGE_LEN - 2) | |
3650 | *fp = len; | |
3651 | else | |
3652 | *fp = CONTROL_MPAGE_LEN - 2; | |
06dbde5f | 3653 | return -EINVAL; |
7780081c | 3654 | } |
06dbde5f HR |
3655 | |
3656 | d_sense = buf[0] & (1 << 2); | |
3657 | ||
3658 | /* | |
3659 | * Check that read-only bits are not modified. | |
3660 | */ | |
f086b748 | 3661 | ata_msense_control(dev, mpage, false); |
7780081c HR |
3662 | for (i = 0; i < CONTROL_MPAGE_LEN - 2; i++) { |
3663 | if (i == 0) | |
3664 | continue; | |
3665 | if (mpage[2 + i] != buf[i]) { | |
3666 | *fp = i; | |
3667 | return -EINVAL; | |
3668 | } | |
3669 | } | |
06dbde5f HR |
3670 | if (d_sense & (1 << 2)) |
3671 | dev->flags |= ATA_DFLAG_D_SENSE; | |
3672 | else | |
3673 | dev->flags &= ~ATA_DFLAG_D_SENSE; | |
06dbde5f HR |
3674 | return 0; |
3675 | } | |
3676 | ||
1b26d29c | 3677 | /** |
01efd600 | 3678 | * ata_scsi_mode_select_xlat - Simulate MODE SELECT 6, 10 commands |
1b26d29c PB |
3679 | * @qc: Storage for translated ATA taskfile |
3680 | * | |
3681 | * Converts a MODE SELECT command to an ATA SET FEATURES taskfile. | |
3682 | * Assume this is invoked for direct access devices (e.g. disks) only. | |
3683 | * There should be no block descriptor for other device types. | |
3684 | * | |
3685 | * LOCKING: | |
3686 | * spin_lock_irqsave(host lock) | |
3687 | */ | |
3688 | static unsigned int ata_scsi_mode_select_xlat(struct ata_queued_cmd *qc) | |
3689 | { | |
3690 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3691 | const u8 *cdb = scmd->cmnd; | |
1b26d29c PB |
3692 | u8 pg, spg; |
3693 | unsigned six_byte, pg_len, hdr_len, bd_len; | |
3694 | int len; | |
7780081c HR |
3695 | u16 fp = (u16)-1; |
3696 | u8 bp = 0xff; | |
f650ef61 YB |
3697 | u8 buffer[64]; |
3698 | const u8 *p = buffer; | |
1b26d29c PB |
3699 | |
3700 | VPRINTK("ENTER\n"); | |
3701 | ||
3702 | six_byte = (cdb[0] == MODE_SELECT); | |
3703 | if (six_byte) { | |
bcfc867d HR |
3704 | if (scmd->cmd_len < 5) { |
3705 | fp = 4; | |
1b26d29c | 3706 | goto invalid_fld; |
bcfc867d | 3707 | } |
1b26d29c PB |
3708 | |
3709 | len = cdb[4]; | |
3710 | hdr_len = 4; | |
3711 | } else { | |
bcfc867d HR |
3712 | if (scmd->cmd_len < 9) { |
3713 | fp = 8; | |
1b26d29c | 3714 | goto invalid_fld; |
bcfc867d | 3715 | } |
1b26d29c PB |
3716 | |
3717 | len = (cdb[7] << 8) + cdb[8]; | |
3718 | hdr_len = 8; | |
3719 | } | |
3720 | ||
3721 | /* We only support PF=1, SP=0. */ | |
bcfc867d HR |
3722 | if ((cdb[1] & 0x11) != 0x10) { |
3723 | fp = 1; | |
0df10b84 | 3724 | bp = (cdb[1] & 0x01) ? 1 : 5; |
1b26d29c | 3725 | goto invalid_fld; |
bcfc867d | 3726 | } |
1b26d29c PB |
3727 | |
3728 | /* Test early for possible overrun. */ | |
3729 | if (!scsi_sg_count(scmd) || scsi_sglist(scmd)->length < len) | |
3730 | goto invalid_param_len; | |
3731 | ||
1b26d29c PB |
3732 | /* Move past header and block descriptors. */ |
3733 | if (len < hdr_len) | |
3734 | goto invalid_param_len; | |
3735 | ||
f650ef61 YB |
3736 | if (!sg_copy_to_buffer(scsi_sglist(scmd), scsi_sg_count(scmd), |
3737 | buffer, sizeof(buffer))) | |
3738 | goto invalid_param_len; | |
3739 | ||
1b26d29c PB |
3740 | if (six_byte) |
3741 | bd_len = p[3]; | |
3742 | else | |
3743 | bd_len = (p[6] << 8) + p[7]; | |
3744 | ||
3745 | len -= hdr_len; | |
3746 | p += hdr_len; | |
3747 | if (len < bd_len) | |
3748 | goto invalid_param_len; | |
7780081c HR |
3749 | if (bd_len != 0 && bd_len != 8) { |
3750 | fp = (six_byte) ? 3 : 6; | |
3751 | fp += bd_len + hdr_len; | |
1b26d29c | 3752 | goto invalid_param; |
7780081c | 3753 | } |
1b26d29c PB |
3754 | |
3755 | len -= bd_len; | |
3756 | p += bd_len; | |
3757 | if (len == 0) | |
3758 | goto skip; | |
3759 | ||
3760 | /* Parse both possible formats for the mode page headers. */ | |
3761 | pg = p[0] & 0x3f; | |
3762 | if (p[0] & 0x40) { | |
3763 | if (len < 4) | |
3764 | goto invalid_param_len; | |
3765 | ||
3766 | spg = p[1]; | |
3767 | pg_len = (p[2] << 8) | p[3]; | |
3768 | p += 4; | |
3769 | len -= 4; | |
3770 | } else { | |
3771 | if (len < 2) | |
3772 | goto invalid_param_len; | |
3773 | ||
3774 | spg = 0; | |
3775 | pg_len = p[1]; | |
3776 | p += 2; | |
3777 | len -= 2; | |
3778 | } | |
3779 | ||
3780 | /* | |
3781 | * No mode subpages supported (yet) but asking for _all_ | |
3782 | * subpages may be valid | |
3783 | */ | |
7780081c HR |
3784 | if (spg && (spg != ALL_SUB_MPAGES)) { |
3785 | fp = (p[0] & 0x40) ? 1 : 0; | |
3786 | fp += hdr_len + bd_len; | |
1b26d29c | 3787 | goto invalid_param; |
7780081c | 3788 | } |
1b26d29c PB |
3789 | if (pg_len > len) |
3790 | goto invalid_param_len; | |
3791 | ||
3792 | switch (pg) { | |
3793 | case CACHE_MPAGE: | |
7780081c HR |
3794 | if (ata_mselect_caching(qc, p, pg_len, &fp) < 0) { |
3795 | fp += hdr_len + bd_len; | |
1b26d29c | 3796 | goto invalid_param; |
7780081c | 3797 | } |
1b26d29c | 3798 | break; |
06dbde5f | 3799 | case CONTROL_MPAGE: |
7780081c HR |
3800 | if (ata_mselect_control(qc, p, pg_len, &fp) < 0) { |
3801 | fp += hdr_len + bd_len; | |
06dbde5f | 3802 | goto invalid_param; |
535fd072 TY |
3803 | } else { |
3804 | goto skip; /* No ATA command to send */ | |
7780081c | 3805 | } |
1b26d29c | 3806 | break; |
1b26d29c | 3807 | default: /* invalid page code */ |
7780081c | 3808 | fp = bd_len + hdr_len; |
1b26d29c PB |
3809 | goto invalid_param; |
3810 | } | |
3811 | ||
3812 | /* | |
3813 | * Only one page has changeable data, so we only support setting one | |
3814 | * page at a time. | |
3815 | */ | |
3816 | if (len > pg_len) | |
3817 | goto invalid_param; | |
3818 | ||
3819 | return 0; | |
3820 | ||
3821 | invalid_fld: | |
0df10b84 | 3822 | ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp); |
1b26d29c PB |
3823 | return 1; |
3824 | ||
3825 | invalid_param: | |
7780081c | 3826 | ata_scsi_set_invalid_parameter(qc->dev, scmd, fp); |
1b26d29c PB |
3827 | return 1; |
3828 | ||
3829 | invalid_param_len: | |
3830 | /* "Parameter list length error" */ | |
06dbde5f | 3831 | ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0); |
1b26d29c PB |
3832 | return 1; |
3833 | ||
3834 | skip: | |
3835 | scmd->result = SAM_STAT_GOOD; | |
3836 | return 1; | |
3837 | } | |
3838 | ||
818831c8 CH |
3839 | static u8 ata_scsi_trusted_op(u32 len, bool send, bool dma) |
3840 | { | |
3841 | if (len == 0) | |
3842 | return ATA_CMD_TRUSTED_NONDATA; | |
3843 | else if (send) | |
3844 | return dma ? ATA_CMD_TRUSTED_SND_DMA : ATA_CMD_TRUSTED_SND; | |
3845 | else | |
3846 | return dma ? ATA_CMD_TRUSTED_RCV_DMA : ATA_CMD_TRUSTED_RCV; | |
3847 | } | |
3848 | ||
3849 | static unsigned int ata_scsi_security_inout_xlat(struct ata_queued_cmd *qc) | |
3850 | { | |
3851 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3852 | const u8 *cdb = scmd->cmnd; | |
3853 | struct ata_taskfile *tf = &qc->tf; | |
3854 | u8 secp = cdb[1]; | |
3855 | bool send = (cdb[0] == SECURITY_PROTOCOL_OUT); | |
3856 | u16 spsp = get_unaligned_be16(&cdb[2]); | |
3857 | u32 len = get_unaligned_be32(&cdb[6]); | |
3858 | bool dma = !(qc->dev->flags & ATA_DFLAG_PIO); | |
3859 | ||
3860 | /* | |
3861 | * We don't support the ATA "security" protocol. | |
3862 | */ | |
3863 | if (secp == 0xef) { | |
3864 | ata_scsi_set_invalid_field(qc->dev, scmd, 1, 0); | |
3865 | return 1; | |
3866 | } | |
3867 | ||
3868 | if (cdb[4] & 7) { /* INC_512 */ | |
3869 | if (len > 0xffff) { | |
3870 | ata_scsi_set_invalid_field(qc->dev, scmd, 6, 0); | |
3871 | return 1; | |
3872 | } | |
3873 | } else { | |
3874 | if (len > 0x01fffe00) { | |
3875 | ata_scsi_set_invalid_field(qc->dev, scmd, 6, 0); | |
3876 | return 1; | |
3877 | } | |
3878 | ||
3879 | /* convert to the sector-based ATA addressing */ | |
3880 | len = (len + 511) / 512; | |
3881 | } | |
3882 | ||
3883 | tf->protocol = dma ? ATA_PROT_DMA : ATA_PROT_PIO; | |
3884 | tf->flags |= ATA_TFLAG_DEVICE | ATA_TFLAG_ISADDR | ATA_TFLAG_LBA; | |
3885 | if (send) | |
3886 | tf->flags |= ATA_TFLAG_WRITE; | |
3887 | tf->command = ata_scsi_trusted_op(len, send, dma); | |
3888 | tf->feature = secp; | |
3889 | tf->lbam = spsp & 0xff; | |
3890 | tf->lbah = spsp >> 8; | |
3891 | ||
3892 | if (len) { | |
3893 | tf->nsect = len & 0xff; | |
3894 | tf->lbal = len >> 8; | |
3895 | } else { | |
3896 | if (!send) | |
3897 | tf->lbah = (1 << 7); | |
3898 | } | |
3899 | ||
3900 | ata_qc_set_pc_nbytes(qc); | |
3901 | return 0; | |
3902 | } | |
3903 | ||
b1ffbf85 MI |
3904 | /** |
3905 | * ata_scsi_var_len_cdb_xlat - SATL variable length CDB to Handler | |
3906 | * @qc: Command to be translated | |
3907 | * | |
3908 | * Translate a SCSI variable length CDB to specified commands. | |
3909 | * It checks a service action value in CDB to call corresponding handler. | |
3910 | * | |
3911 | * RETURNS: | |
3912 | * Zero on success, non-zero on failure | |
3913 | * | |
3914 | */ | |
3915 | static unsigned int ata_scsi_var_len_cdb_xlat(struct ata_queued_cmd *qc) | |
3916 | { | |
3917 | struct scsi_cmnd *scmd = qc->scsicmd; | |
3918 | const u8 *cdb = scmd->cmnd; | |
3919 | const u16 sa = get_unaligned_be16(&cdb[8]); | |
3920 | ||
3921 | /* | |
3922 | * if service action represents a ata pass-thru(32) command, | |
3923 | * then pass it to ata_scsi_pass_thru handler. | |
3924 | */ | |
3925 | if (sa == ATA_32) | |
3926 | return ata_scsi_pass_thru(qc); | |
3927 | ||
b1ffbf85 MI |
3928 | /* unsupported service action */ |
3929 | return 1; | |
3930 | } | |
3931 | ||
1da177e4 LT |
3932 | /** |
3933 | * ata_get_xlat_func - check if SCSI to ATA translation is possible | |
3934 | * @dev: ATA device | |
3935 | * @cmd: SCSI command opcode to consider | |
3936 | * | |
3937 | * Look up the SCSI command given, and determine whether the | |
3938 | * SCSI command is to be translated or simulated. | |
3939 | * | |
3940 | * RETURNS: | |
3941 | * Pointer to translation function if possible, %NULL if not. | |
3942 | */ | |
3943 | ||
3944 | static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd) | |
3945 | { | |
3946 | switch (cmd) { | |
3947 | case READ_6: | |
3948 | case READ_10: | |
3949 | case READ_16: | |
3950 | ||
3951 | case WRITE_6: | |
3952 | case WRITE_10: | |
3953 | case WRITE_16: | |
3954 | return ata_scsi_rw_xlat; | |
3955 | ||
0cdd6eb7 | 3956 | case WRITE_SAME_16: |
18f0f978 CH |
3957 | return ata_scsi_write_same_xlat; |
3958 | ||
1da177e4 LT |
3959 | case SYNCHRONIZE_CACHE: |
3960 | if (ata_try_flush_cache(dev)) | |
3961 | return ata_scsi_flush_xlat; | |
3962 | break; | |
3963 | ||
3964 | case VERIFY: | |
3965 | case VERIFY_16: | |
3966 | return ata_scsi_verify_xlat; | |
b095518e JG |
3967 | |
3968 | case ATA_12: | |
3969 | case ATA_16: | |
3970 | return ata_scsi_pass_thru; | |
da61396d | 3971 | |
b1ffbf85 MI |
3972 | case VARIABLE_LENGTH_CMD: |
3973 | return ata_scsi_var_len_cdb_xlat; | |
3974 | ||
1b26d29c PB |
3975 | case MODE_SELECT: |
3976 | case MODE_SELECT_10: | |
3977 | return ata_scsi_mode_select_xlat; | |
3978 | break; | |
3979 | ||
28a3fc22 HR |
3980 | case ZBC_IN: |
3981 | return ata_scsi_zbc_in_xlat; | |
3982 | ||
27708a95 HR |
3983 | case ZBC_OUT: |
3984 | return ata_scsi_zbc_out_xlat; | |
3985 | ||
818831c8 CH |
3986 | case SECURITY_PROTOCOL_IN: |
3987 | case SECURITY_PROTOCOL_OUT: | |
3988 | if (!(dev->flags & ATA_DFLAG_TRUSTED)) | |
3989 | break; | |
3990 | return ata_scsi_security_inout_xlat; | |
3991 | ||
972dcafb DG |
3992 | case START_STOP: |
3993 | return ata_scsi_start_stop_xlat; | |
1da177e4 LT |
3994 | } |
3995 | ||
3996 | return NULL; | |
3997 | } | |
3998 | ||
3999 | /** | |
4000 | * ata_scsi_dump_cdb - dump SCSI command contents to dmesg | |
4001 | * @ap: ATA port to which the command was being sent | |
4002 | * @cmd: SCSI command to dump | |
4003 | * | |
4004 | * Prints the contents of a SCSI command via printk(). | |
4005 | */ | |
4006 | ||
15964ff7 | 4007 | void ata_scsi_dump_cdb(struct ata_port *ap, struct scsi_cmnd *cmd) |
1da177e4 | 4008 | { |
32a5342a | 4009 | #ifdef ATA_VERBOSE_DEBUG |
1da177e4 | 4010 | struct scsi_device *scsidev = cmd->device; |
1da177e4 | 4011 | |
32a5342a | 4012 | VPRINTK("CDB (%u:%d,%d,%lld) %9ph\n", |
44877b4e | 4013 | ap->print_id, |
1da177e4 | 4014 | scsidev->channel, scsidev->id, scsidev->lun, |
26f58830 | 4015 | cmd->cmnd); |
1da177e4 LT |
4016 | #endif |
4017 | } | |
4018 | ||
15964ff7 | 4019 | int __ata_scsi_queuecmd(struct scsi_cmnd *scmd, struct ata_device *dev) |
eb3f0f9c | 4020 | { |
baf4fdfa ML |
4021 | u8 scsi_op = scmd->cmnd[0]; |
4022 | ata_xlat_func_t xlat_func; | |
2115ea94 TH |
4023 | int rc = 0; |
4024 | ||
9162c657 | 4025 | if (dev->class == ATA_DEV_ATA || dev->class == ATA_DEV_ZAC) { |
baf4fdfa ML |
4026 | if (unlikely(!scmd->cmd_len || scmd->cmd_len > dev->cdb_len)) |
4027 | goto bad_cdb_len; | |
eb3f0f9c | 4028 | |
baf4fdfa ML |
4029 | xlat_func = ata_get_xlat_func(dev, scsi_op); |
4030 | } else { | |
4031 | if (unlikely(!scmd->cmd_len)) | |
4032 | goto bad_cdb_len; | |
4033 | ||
4034 | xlat_func = NULL; | |
4035 | if (likely((scsi_op != ATA_16) || !atapi_passthru16)) { | |
4036 | /* relay SCSI command to ATAPI device */ | |
607126c2 | 4037 | int len = COMMAND_SIZE(scsi_op); |
058f58e2 EB |
4038 | if (unlikely(len > scmd->cmd_len || |
4039 | len > dev->cdb_len || | |
4040 | scmd->cmd_len > ATAPI_CDB_LEN)) | |
baf4fdfa ML |
4041 | goto bad_cdb_len; |
4042 | ||
4043 | xlat_func = atapi_xlat; | |
4044 | } else { | |
4045 | /* ATA_16 passthru, treat as an ATA command */ | |
4046 | if (unlikely(scmd->cmd_len > 16)) | |
4047 | goto bad_cdb_len; | |
4048 | ||
4049 | xlat_func = ata_get_xlat_func(dev, scsi_op); | |
4050 | } | |
4051 | } | |
4052 | ||
4053 | if (xlat_func) | |
b27dcfb0 | 4054 | rc = ata_scsi_translate(dev, scmd, xlat_func); |
baf4fdfa | 4055 | else |
b27dcfb0 | 4056 | ata_scsi_simulate(dev, scmd); |
2115ea94 TH |
4057 | |
4058 | return rc; | |
baf4fdfa ML |
4059 | |
4060 | bad_cdb_len: | |
4061 | DPRINTK("bad CDB len=%u, scsi_op=0x%02x, max=%u\n", | |
4062 | scmd->cmd_len, scsi_op, dev->cdb_len); | |
4063 | scmd->result = DID_ERROR << 16; | |
b27dcfb0 | 4064 | scmd->scsi_done(scmd); |
baf4fdfa | 4065 | return 0; |
eb3f0f9c BK |
4066 | } |
4067 | ||
1da177e4 LT |
4068 | /** |
4069 | * ata_scsi_queuecmd - Issue SCSI cdb to libata-managed device | |
23e701e6 | 4070 | * @shost: SCSI host of command to be sent |
1da177e4 | 4071 | * @cmd: SCSI command to be sent |
1da177e4 LT |
4072 | * |
4073 | * In some cases, this function translates SCSI commands into | |
4074 | * ATA taskfiles, and queues the taskfiles to be sent to | |
4075 | * hardware. In other cases, this function simulates a | |
4076 | * SCSI device by evaluating and responding to certain | |
4077 | * SCSI commands. This creates the overall effect of | |
4078 | * ATA and ATAPI devices appearing as SCSI devices. | |
4079 | * | |
4080 | * LOCKING: | |
23e701e6 | 4081 | * ATA host lock |
1da177e4 LT |
4082 | * |
4083 | * RETURNS: | |
2115ea94 TH |
4084 | * Return value from __ata_scsi_queuecmd() if @cmd can be queued, |
4085 | * 0 otherwise. | |
1da177e4 | 4086 | */ |
23e701e6 | 4087 | int ata_scsi_queuecmd(struct Scsi_Host *shost, struct scsi_cmnd *cmd) |
1da177e4 LT |
4088 | { |
4089 | struct ata_port *ap; | |
4090 | struct ata_device *dev; | |
4091 | struct scsi_device *scsidev = cmd->device; | |
2115ea94 | 4092 | int rc = 0; |
23e701e6 | 4093 | unsigned long irq_flags; |
1da177e4 | 4094 | |
35bb94b1 | 4095 | ap = ata_shost_to_port(shost); |
005a5a06 | 4096 | |
23e701e6 | 4097 | spin_lock_irqsave(ap->lock, irq_flags); |
1da177e4 LT |
4098 | |
4099 | ata_scsi_dump_cdb(ap, cmd); | |
4100 | ||
4101 | dev = ata_scsi_find_dev(ap, scsidev); | |
eb3f0f9c | 4102 | if (likely(dev)) |
b27dcfb0 | 4103 | rc = __ata_scsi_queuecmd(cmd, dev); |
eb3f0f9c | 4104 | else { |
1da177e4 | 4105 | cmd->result = (DID_BAD_TARGET << 16); |
23e701e6 | 4106 | cmd->scsi_done(cmd); |
1da177e4 LT |
4107 | } |
4108 | ||
23e701e6 JG |
4109 | spin_unlock_irqrestore(ap->lock, irq_flags); |
4110 | ||
2115ea94 | 4111 | return rc; |
1da177e4 | 4112 | } |
a52fbcfc | 4113 | EXPORT_SYMBOL_GPL(ata_scsi_queuecmd); |
1da177e4 LT |
4114 | |
4115 | /** | |
4116 | * ata_scsi_simulate - simulate SCSI command on ATA device | |
c893a3ae | 4117 | * @dev: the target device |
1da177e4 | 4118 | * @cmd: SCSI command being sent to device. |
1da177e4 LT |
4119 | * |
4120 | * Interprets and directly executes a select list of SCSI commands | |
4121 | * that can be handled internally. | |
4122 | * | |
4123 | * LOCKING: | |
cca3974e | 4124 | * spin_lock_irqsave(host lock) |
1da177e4 LT |
4125 | */ |
4126 | ||
b27dcfb0 | 4127 | void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd) |
1da177e4 LT |
4128 | { |
4129 | struct ata_scsi_args args; | |
057ace5e | 4130 | const u8 *scsicmd = cmd->cmnd; |
45394145 | 4131 | u8 tmp8; |
1da177e4 | 4132 | |
9a3dccc4 TH |
4133 | args.dev = dev; |
4134 | args.id = dev->id; | |
1da177e4 | 4135 | args.cmd = cmd; |
1da177e4 LT |
4136 | |
4137 | switch(scsicmd[0]) { | |
2dcb407e | 4138 | case INQUIRY: |
bcfc867d | 4139 | if (scsicmd[1] & 2) /* is CmdDt set? */ |
8fc6c065 | 4140 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e JG |
4141 | else if ((scsicmd[1] & 1) == 0) /* is EVPD clear? */ |
4142 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_std); | |
4143 | else switch (scsicmd[2]) { | |
4144 | case 0x00: | |
4145 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_00); | |
1da177e4 | 4146 | break; |
2dcb407e JG |
4147 | case 0x80: |
4148 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_80); | |
1da177e4 | 4149 | break; |
2dcb407e JG |
4150 | case 0x83: |
4151 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_83); | |
1da177e4 | 4152 | break; |
2dcb407e JG |
4153 | case 0x89: |
4154 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89); | |
4155 | break; | |
18f0f978 CH |
4156 | case 0xb0: |
4157 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b0); | |
4158 | break; | |
1e9dbc92 MW |
4159 | case 0xb1: |
4160 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1); | |
4161 | break; | |
02e0a604 MP |
4162 | case 0xb2: |
4163 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b2); | |
4164 | break; | |
6d1003ae HR |
4165 | case 0xb6: |
4166 | if (dev->flags & ATA_DFLAG_ZAC) { | |
4167 | ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b6); | |
4168 | break; | |
4169 | } | |
df561f66 | 4170 | fallthrough; |
2dcb407e | 4171 | default: |
8fc6c065 | 4172 | ata_scsi_set_invalid_field(dev, cmd, 2, 0xff); |
1da177e4 | 4173 | break; |
2dcb407e JG |
4174 | } |
4175 | break; | |
4176 | ||
4177 | case MODE_SENSE: | |
4178 | case MODE_SENSE_10: | |
4179 | ata_scsi_rbuf_fill(&args, ata_scsiop_mode_sense); | |
4180 | break; | |
4181 | ||
2dcb407e JG |
4182 | case READ_CAPACITY: |
4183 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); | |
4184 | break; | |
4185 | ||
eb846d9f | 4186 | case SERVICE_ACTION_IN_16: |
2dcb407e | 4187 | if ((scsicmd[1] & 0x1f) == SAI_READ_CAPACITY_16) |
1da177e4 | 4188 | ata_scsi_rbuf_fill(&args, ata_scsiop_read_cap); |
2dcb407e | 4189 | else |
8fc6c065 | 4190 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e | 4191 | break; |
1da177e4 | 4192 | |
2dcb407e JG |
4193 | case REPORT_LUNS: |
4194 | ata_scsi_rbuf_fill(&args, ata_scsiop_report_luns); | |
4195 | break; | |
1da177e4 | 4196 | |
2dcb407e | 4197 | case REQUEST_SENSE: |
06dbde5f | 4198 | ata_scsi_set_sense(dev, cmd, 0, 0, 0); |
2dcb407e | 4199 | cmd->result = (DRIVER_SENSE << 24); |
2dcb407e | 4200 | break; |
1da177e4 | 4201 | |
2dcb407e JG |
4202 | /* if we reach this, then writeback caching is disabled, |
4203 | * turning this into a no-op. | |
4204 | */ | |
4205 | case SYNCHRONIZE_CACHE: | |
df561f66 | 4206 | fallthrough; |
2dcb407e JG |
4207 | |
4208 | /* no-op's, complete with success */ | |
4209 | case REZERO_UNIT: | |
4210 | case SEEK_6: | |
4211 | case SEEK_10: | |
4212 | case TEST_UNIT_READY: | |
2dcb407e | 4213 | break; |
45394145 | 4214 | |
2dcb407e JG |
4215 | case SEND_DIAGNOSTIC: |
4216 | tmp8 = scsicmd[1] & ~(1 << 3); | |
a0c0b0e9 | 4217 | if (tmp8 != 0x4 || scsicmd[3] || scsicmd[4]) |
8fc6c065 | 4218 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
2dcb407e | 4219 | break; |
1da177e4 | 4220 | |
7b203094 ST |
4221 | case MAINTENANCE_IN: |
4222 | if (scsicmd[1] == MI_REPORT_SUPPORTED_OPERATION_CODES) | |
4223 | ata_scsi_rbuf_fill(&args, ata_scsiop_maint_in); | |
4224 | else | |
8fc6c065 | 4225 | ata_scsi_set_invalid_field(dev, cmd, 1, 0xff); |
7b203094 ST |
4226 | break; |
4227 | ||
2dcb407e JG |
4228 | /* all other commands */ |
4229 | default: | |
06dbde5f | 4230 | ata_scsi_set_sense(dev, cmd, ILLEGAL_REQUEST, 0x20, 0x0); |
2dcb407e | 4231 | /* "Invalid command operation code" */ |
2dcb407e | 4232 | break; |
1da177e4 | 4233 | } |
8fc6c065 CH |
4234 | |
4235 | cmd->scsi_done(cmd); | |
1da177e4 LT |
4236 | } |
4237 | ||
f3187195 TH |
4238 | int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht) |
4239 | { | |
4240 | int i, rc; | |
4241 | ||
4242 | for (i = 0; i < host->n_ports; i++) { | |
4243 | struct ata_port *ap = host->ports[i]; | |
4244 | struct Scsi_Host *shost; | |
4245 | ||
4246 | rc = -ENOMEM; | |
4247 | shost = scsi_host_alloc(sht, sizeof(struct ata_port *)); | |
4248 | if (!shost) | |
4249 | goto err_alloc; | |
4250 | ||
9ee4f393 | 4251 | shost->eh_noresume = 1; |
f3187195 TH |
4252 | *(struct ata_port **)&shost->hostdata[0] = ap; |
4253 | ap->scsi_host = shost; | |
4254 | ||
d9027470 | 4255 | shost->transportt = ata_scsi_transport_template; |
f3187195 TH |
4256 | shost->unique_id = ap->print_id; |
4257 | shost->max_id = 16; | |
4258 | shost->max_lun = 1; | |
4259 | shost->max_channel = 1; | |
b1ffbf85 | 4260 | shost->max_cmd_len = 32; |
f3187195 | 4261 | |
31cc23b3 TH |
4262 | /* Schedule policy is determined by ->qc_defer() |
4263 | * callback and it needs to see every deferred qc. | |
4264 | * Set host_blocked to 1 to prevent SCSI midlayer from | |
4265 | * automatically deferring requests. | |
4266 | */ | |
4267 | shost->max_host_blocked = 1; | |
4268 | ||
1d72f7ae | 4269 | rc = scsi_add_host_with_dma(shost, &ap->tdev, ap->host->dev); |
f3187195 | 4270 | if (rc) |
1d72f7ae | 4271 | goto err_alloc; |
f3187195 TH |
4272 | } |
4273 | ||
4274 | return 0; | |
4275 | ||
f3187195 TH |
4276 | err_alloc: |
4277 | while (--i >= 0) { | |
4278 | struct Scsi_Host *shost = host->ports[i]->scsi_host; | |
4279 | ||
1d72f7ae | 4280 | /* scsi_host_put() is in ata_devres_release() */ |
f3187195 | 4281 | scsi_remove_host(shost); |
f3187195 TH |
4282 | } |
4283 | return rc; | |
4284 | } | |
4285 | ||
45b8084f LW |
4286 | #ifdef CONFIG_OF |
4287 | static void ata_scsi_assign_ofnode(struct ata_device *dev, struct ata_port *ap) | |
4288 | { | |
4289 | struct scsi_device *sdev = dev->sdev; | |
4290 | struct device *d = ap->host->dev; | |
4291 | struct device_node *np = d->of_node; | |
4292 | struct device_node *child; | |
4293 | ||
4294 | for_each_available_child_of_node(np, child) { | |
4295 | int ret; | |
4296 | u32 val; | |
4297 | ||
4298 | ret = of_property_read_u32(child, "reg", &val); | |
4299 | if (ret) | |
4300 | continue; | |
4301 | if (val == dev->devno) { | |
4302 | dev_dbg(d, "found matching device node\n"); | |
4303 | sdev->sdev_gendev.of_node = child; | |
4304 | return; | |
4305 | } | |
4306 | } | |
4307 | } | |
4308 | #else | |
4309 | static void ata_scsi_assign_ofnode(struct ata_device *dev, struct ata_port *ap) | |
4310 | { | |
4311 | } | |
4312 | #endif | |
4313 | ||
1ae46317 | 4314 | void ata_scsi_scan_host(struct ata_port *ap, int sync) |
644dd0cc | 4315 | { |
1ae46317 TH |
4316 | int tries = 5; |
4317 | struct ata_device *last_failed_dev = NULL; | |
41bda9c9 | 4318 | struct ata_link *link; |
1ae46317 | 4319 | struct ata_device *dev; |
644dd0cc | 4320 | |
1ae46317 | 4321 | repeat: |
1eca4365 TH |
4322 | ata_for_each_link(link, ap, EDGE) { |
4323 | ata_for_each_dev(dev, link, ENABLED) { | |
41bda9c9 TH |
4324 | struct scsi_device *sdev; |
4325 | int channel = 0, id = 0; | |
3edebac4 | 4326 | |
1eca4365 | 4327 | if (dev->sdev) |
41bda9c9 | 4328 | continue; |
3f19ee8c | 4329 | |
41bda9c9 TH |
4330 | if (ata_is_host_link(link)) |
4331 | id = dev->devno; | |
4332 | else | |
4333 | channel = link->pmp; | |
4334 | ||
4335 | sdev = __scsi_add_device(ap->scsi_host, channel, id, 0, | |
4336 | NULL); | |
4337 | if (!IS_ERR(sdev)) { | |
4338 | dev->sdev = sdev; | |
45b8084f | 4339 | ata_scsi_assign_ofnode(dev, ap); |
41bda9c9 | 4340 | scsi_device_put(sdev); |
295124dc GG |
4341 | } else { |
4342 | dev->sdev = NULL; | |
41bda9c9 | 4343 | } |
3edebac4 | 4344 | } |
3f19ee8c | 4345 | } |
1ae46317 TH |
4346 | |
4347 | /* If we scanned while EH was in progress or allocation | |
4348 | * failure occurred, scan would have failed silently. Check | |
4349 | * whether all devices are attached. | |
4350 | */ | |
1eca4365 TH |
4351 | ata_for_each_link(link, ap, EDGE) { |
4352 | ata_for_each_dev(dev, link, ENABLED) { | |
4353 | if (!dev->sdev) | |
41bda9c9 TH |
4354 | goto exit_loop; |
4355 | } | |
1ae46317 | 4356 | } |
41bda9c9 TH |
4357 | exit_loop: |
4358 | if (!link) | |
1ae46317 TH |
4359 | return; |
4360 | ||
4361 | /* we're missing some SCSI devices */ | |
4362 | if (sync) { | |
4363 | /* If caller requested synchrnous scan && we've made | |
4364 | * any progress, sleep briefly and repeat. | |
4365 | */ | |
4366 | if (dev != last_failed_dev) { | |
4367 | msleep(100); | |
4368 | last_failed_dev = dev; | |
4369 | goto repeat; | |
4370 | } | |
4371 | ||
4372 | /* We might be failing to detect boot device, give it | |
4373 | * a few more chances. | |
4374 | */ | |
4375 | if (--tries) { | |
4376 | msleep(100); | |
4377 | goto repeat; | |
4378 | } | |
4379 | ||
a9a79dfe JP |
4380 | ata_port_err(ap, |
4381 | "WARNING: synchronous SCSI scan failed without making any progress, switching to async\n"); | |
1ae46317 TH |
4382 | } |
4383 | ||
ad72cf98 | 4384 | queue_delayed_work(system_long_wq, &ap->hotplug_task, |
1ae46317 | 4385 | round_jiffies_relative(HZ)); |
644dd0cc | 4386 | } |
0ea035a3 TH |
4387 | |
4388 | /** | |
4389 | * ata_scsi_offline_dev - offline attached SCSI device | |
4390 | * @dev: ATA device to offline attached SCSI device for | |
4391 | * | |
4392 | * This function is called from ata_eh_hotplug() and responsible | |
4393 | * for taking the SCSI device attached to @dev offline. This | |
cca3974e | 4394 | * function is called with host lock which protects dev->sdev |
0ea035a3 TH |
4395 | * against clearing. |
4396 | * | |
4397 | * LOCKING: | |
cca3974e | 4398 | * spin_lock_irqsave(host lock) |
0ea035a3 TH |
4399 | * |
4400 | * RETURNS: | |
4401 | * 1 if attached SCSI device exists, 0 otherwise. | |
4402 | */ | |
4403 | int ata_scsi_offline_dev(struct ata_device *dev) | |
4404 | { | |
4405 | if (dev->sdev) { | |
4406 | scsi_device_set_state(dev->sdev, SDEV_OFFLINE); | |
4407 | return 1; | |
4408 | } | |
4409 | return 0; | |
4410 | } | |
580b2102 TH |
4411 | |
4412 | /** | |
4413 | * ata_scsi_remove_dev - remove attached SCSI device | |
4414 | * @dev: ATA device to remove attached SCSI device for | |
4415 | * | |
4416 | * This function is called from ata_eh_scsi_hotplug() and | |
4417 | * responsible for removing the SCSI device attached to @dev. | |
4418 | * | |
4419 | * LOCKING: | |
4420 | * Kernel thread context (may sleep). | |
4421 | */ | |
4422 | static void ata_scsi_remove_dev(struct ata_device *dev) | |
4423 | { | |
9af5c9c9 | 4424 | struct ata_port *ap = dev->link->ap; |
580b2102 TH |
4425 | struct scsi_device *sdev; |
4426 | unsigned long flags; | |
4427 | ||
4428 | /* Alas, we need to grab scan_mutex to ensure SCSI device | |
4429 | * state doesn't change underneath us and thus | |
4430 | * scsi_device_get() always succeeds. The mutex locking can | |
4431 | * be removed if there is __scsi_device_get() interface which | |
4432 | * increments reference counts regardless of device state. | |
4433 | */ | |
cca3974e | 4434 | mutex_lock(&ap->scsi_host->scan_mutex); |
ba6a1308 | 4435 | spin_lock_irqsave(ap->lock, flags); |
580b2102 | 4436 | |
cca3974e | 4437 | /* clearing dev->sdev is protected by host lock */ |
580b2102 TH |
4438 | sdev = dev->sdev; |
4439 | dev->sdev = NULL; | |
4440 | ||
4441 | if (sdev) { | |
4442 | /* If user initiated unplug races with us, sdev can go | |
cca3974e | 4443 | * away underneath us after the host lock and |
580b2102 TH |
4444 | * scan_mutex are released. Hold onto it. |
4445 | */ | |
4446 | if (scsi_device_get(sdev) == 0) { | |
4447 | /* The following ensures the attached sdev is | |
4448 | * offline on return from ata_scsi_offline_dev() | |
4449 | * regardless it wins or loses the race | |
4450 | * against this function. | |
4451 | */ | |
4452 | scsi_device_set_state(sdev, SDEV_OFFLINE); | |
4453 | } else { | |
4454 | WARN_ON(1); | |
4455 | sdev = NULL; | |
4456 | } | |
4457 | } | |
4458 | ||
ba6a1308 | 4459 | spin_unlock_irqrestore(ap->lock, flags); |
cca3974e | 4460 | mutex_unlock(&ap->scsi_host->scan_mutex); |
580b2102 TH |
4461 | |
4462 | if (sdev) { | |
a9a79dfe JP |
4463 | ata_dev_info(dev, "detaching (SCSI %s)\n", |
4464 | dev_name(&sdev->sdev_gendev)); | |
580b2102 TH |
4465 | |
4466 | scsi_remove_device(sdev); | |
4467 | scsi_device_put(sdev); | |
4468 | } | |
4469 | } | |
4470 | ||
41bda9c9 TH |
4471 | static void ata_scsi_handle_link_detach(struct ata_link *link) |
4472 | { | |
4473 | struct ata_port *ap = link->ap; | |
4474 | struct ata_device *dev; | |
4475 | ||
1eca4365 | 4476 | ata_for_each_dev(dev, link, ALL) { |
41bda9c9 TH |
4477 | unsigned long flags; |
4478 | ||
4479 | if (!(dev->flags & ATA_DFLAG_DETACHED)) | |
4480 | continue; | |
4481 | ||
4482 | spin_lock_irqsave(ap->lock, flags); | |
4483 | dev->flags &= ~ATA_DFLAG_DETACHED; | |
4484 | spin_unlock_irqrestore(ap->lock, flags); | |
4485 | ||
f1bc1e4c AL |
4486 | if (zpodd_dev_enabled(dev)) |
4487 | zpodd_exit(dev); | |
4488 | ||
41bda9c9 TH |
4489 | ata_scsi_remove_dev(dev); |
4490 | } | |
4491 | } | |
4492 | ||
2f294968 KCA |
4493 | /** |
4494 | * ata_scsi_media_change_notify - send media change event | |
c5d0e6a0 | 4495 | * @dev: Pointer to the disk device with media change event |
2f294968 KCA |
4496 | * |
4497 | * Tell the block layer to send a media change notification | |
4498 | * event. | |
4499 | * | |
4500 | * LOCKING: | |
854c73a2 | 4501 | * spin_lock_irqsave(host lock) |
2f294968 | 4502 | */ |
854c73a2 | 4503 | void ata_scsi_media_change_notify(struct ata_device *dev) |
2f294968 | 4504 | { |
854c73a2 | 4505 | if (dev->sdev) |
f26792d5 JG |
4506 | sdev_evt_send_simple(dev->sdev, SDEV_EVT_MEDIA_CHANGE, |
4507 | GFP_ATOMIC); | |
2f294968 | 4508 | } |
2f294968 | 4509 | |
580b2102 TH |
4510 | /** |
4511 | * ata_scsi_hotplug - SCSI part of hotplug | |
65f27f38 | 4512 | * @work: Pointer to ATA port to perform SCSI hotplug on |
580b2102 TH |
4513 | * |
4514 | * Perform SCSI part of hotplug. It's executed from a separate | |
4515 | * workqueue after EH completes. This is necessary because SCSI | |
4516 | * hot plugging requires working EH and hot unplugging is | |
4517 | * synchronized with hot plugging with a mutex. | |
4518 | * | |
4519 | * LOCKING: | |
4520 | * Kernel thread context (may sleep). | |
4521 | */ | |
65f27f38 | 4522 | void ata_scsi_hotplug(struct work_struct *work) |
580b2102 | 4523 | { |
65f27f38 DH |
4524 | struct ata_port *ap = |
4525 | container_of(work, struct ata_port, hotplug_task.work); | |
41bda9c9 | 4526 | int i; |
580b2102 | 4527 | |
b51e9e5d | 4528 | if (ap->pflags & ATA_PFLAG_UNLOADING) { |
580b2102 TH |
4529 | DPRINTK("ENTER/EXIT - unloading\n"); |
4530 | return; | |
4531 | } | |
4532 | ||
4533 | DPRINTK("ENTER\n"); | |
ad72cf98 | 4534 | mutex_lock(&ap->scsi_scan_mutex); |
580b2102 | 4535 | |
41bda9c9 TH |
4536 | /* Unplug detached devices. We cannot use link iterator here |
4537 | * because PMP links have to be scanned even if PMP is | |
4538 | * currently not attached. Iterate manually. | |
4539 | */ | |
4540 | ata_scsi_handle_link_detach(&ap->link); | |
4541 | if (ap->pmp_link) | |
4542 | for (i = 0; i < SATA_PMP_MAX_PORTS; i++) | |
4543 | ata_scsi_handle_link_detach(&ap->pmp_link[i]); | |
580b2102 TH |
4544 | |
4545 | /* scan for new ones */ | |
1ae46317 | 4546 | ata_scsi_scan_host(ap, 0); |
580b2102 | 4547 | |
ad72cf98 | 4548 | mutex_unlock(&ap->scsi_scan_mutex); |
580b2102 TH |
4549 | DPRINTK("EXIT\n"); |
4550 | } | |
83c47bcb TH |
4551 | |
4552 | /** | |
4553 | * ata_scsi_user_scan - indication for user-initiated bus scan | |
4554 | * @shost: SCSI host to scan | |
4555 | * @channel: Channel to scan | |
4556 | * @id: ID to scan | |
4557 | * @lun: LUN to scan | |
4558 | * | |
4559 | * This function is called when user explicitly requests bus | |
4560 | * scan. Set probe pending flag and invoke EH. | |
4561 | * | |
4562 | * LOCKING: | |
4563 | * SCSI layer (we don't care) | |
4564 | * | |
4565 | * RETURNS: | |
4566 | * Zero. | |
4567 | */ | |
d9027470 | 4568 | int ata_scsi_user_scan(struct Scsi_Host *shost, unsigned int channel, |
9cb78c16 | 4569 | unsigned int id, u64 lun) |
83c47bcb TH |
4570 | { |
4571 | struct ata_port *ap = ata_shost_to_port(shost); | |
4572 | unsigned long flags; | |
41bda9c9 | 4573 | int devno, rc = 0; |
83c47bcb TH |
4574 | |
4575 | if (!ap->ops->error_handler) | |
4576 | return -EOPNOTSUPP; | |
4577 | ||
41bda9c9 | 4578 | if (lun != SCAN_WILD_CARD && lun) |
83c47bcb TH |
4579 | return -EINVAL; |
4580 | ||
071f44b1 | 4581 | if (!sata_pmp_attached(ap)) { |
41bda9c9 TH |
4582 | if (channel != SCAN_WILD_CARD && channel) |
4583 | return -EINVAL; | |
4584 | devno = id; | |
4585 | } else { | |
4586 | if (id != SCAN_WILD_CARD && id) | |
4587 | return -EINVAL; | |
4588 | devno = channel; | |
4589 | } | |
4590 | ||
ba6a1308 | 4591 | spin_lock_irqsave(ap->lock, flags); |
83c47bcb | 4592 | |
41bda9c9 TH |
4593 | if (devno == SCAN_WILD_CARD) { |
4594 | struct ata_link *link; | |
4595 | ||
1eca4365 | 4596 | ata_for_each_link(link, ap, EDGE) { |
41bda9c9 | 4597 | struct ata_eh_info *ehi = &link->eh_info; |
b558eddd | 4598 | ehi->probe_mask |= ATA_ALL_DEVICES; |
cf480626 | 4599 | ehi->action |= ATA_EH_RESET; |
41bda9c9 | 4600 | } |
83c47bcb | 4601 | } else { |
41bda9c9 | 4602 | struct ata_device *dev = ata_find_dev(ap, devno); |
83c47bcb TH |
4603 | |
4604 | if (dev) { | |
41bda9c9 | 4605 | struct ata_eh_info *ehi = &dev->link->eh_info; |
9af5c9c9 | 4606 | ehi->probe_mask |= 1 << dev->devno; |
cf480626 | 4607 | ehi->action |= ATA_EH_RESET; |
83c47bcb TH |
4608 | } else |
4609 | rc = -EINVAL; | |
4610 | } | |
4611 | ||
309afcb5 | 4612 | if (rc == 0) { |
83c47bcb | 4613 | ata_port_schedule_eh(ap); |
309afcb5 TH |
4614 | spin_unlock_irqrestore(ap->lock, flags); |
4615 | ata_port_wait_eh(ap); | |
4616 | } else | |
4617 | spin_unlock_irqrestore(ap->lock, flags); | |
83c47bcb TH |
4618 | |
4619 | return rc; | |
4620 | } | |
3057ac3c | 4621 | |
4622 | /** | |
d0171269 | 4623 | * ata_scsi_dev_rescan - initiate scsi_rescan_device() |
65f27f38 | 4624 | * @work: Pointer to ATA port to perform scsi_rescan_device() |
3057ac3c | 4625 | * |
d0171269 | 4626 | * After ATA pass thru (SAT) commands are executed successfully, |
ad72cf98 | 4627 | * libata need to propagate the changes to SCSI layer. |
3057ac3c | 4628 | * |
d0171269 TH |
4629 | * LOCKING: |
4630 | * Kernel thread context (may sleep). | |
3057ac3c | 4631 | */ |
65f27f38 | 4632 | void ata_scsi_dev_rescan(struct work_struct *work) |
3057ac3c | 4633 | { |
65f27f38 DH |
4634 | struct ata_port *ap = |
4635 | container_of(work, struct ata_port, scsi_rescan_task); | |
41bda9c9 | 4636 | struct ata_link *link; |
f58229f8 | 4637 | struct ata_device *dev; |
f84e7e41 | 4638 | unsigned long flags; |
3057ac3c | 4639 | |
ad72cf98 | 4640 | mutex_lock(&ap->scsi_scan_mutex); |
f84e7e41 TH |
4641 | spin_lock_irqsave(ap->lock, flags); |
4642 | ||
1eca4365 TH |
4643 | ata_for_each_link(link, ap, EDGE) { |
4644 | ata_for_each_dev(dev, link, ENABLED) { | |
41bda9c9 | 4645 | struct scsi_device *sdev = dev->sdev; |
3057ac3c | 4646 | |
1eca4365 | 4647 | if (!sdev) |
41bda9c9 TH |
4648 | continue; |
4649 | if (scsi_device_get(sdev)) | |
4650 | continue; | |
f84e7e41 | 4651 | |
41bda9c9 TH |
4652 | spin_unlock_irqrestore(ap->lock, flags); |
4653 | scsi_rescan_device(&(sdev->sdev_gendev)); | |
4654 | scsi_device_put(sdev); | |
4655 | spin_lock_irqsave(ap->lock, flags); | |
4656 | } | |
3057ac3c | 4657 | } |
f84e7e41 TH |
4658 | |
4659 | spin_unlock_irqrestore(ap->lock, flags); | |
ad72cf98 | 4660 | mutex_unlock(&ap->scsi_scan_mutex); |
3057ac3c | 4661 | } |