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09c434b8 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1da177e4 LT |
2 | /* |
3 | * sd.c Copyright (C) 1992 Drew Eckhardt | |
4 | * Copyright (C) 1993, 1994, 1995, 1999 Eric Youngdale | |
5 | * | |
6 | * Linux scsi disk driver | |
7 | * Initial versions: Drew Eckhardt | |
8 | * Subsequent revisions: Eric Youngdale | |
9 | * Modification history: | |
10 | * - Drew Eckhardt <drew@colorado.edu> original | |
11 | * - Eric Youngdale <eric@andante.org> add scatter-gather, multiple | |
12 | * outstanding request, and other enhancements. | |
13 | * Support loadable low-level scsi drivers. | |
14 | * - Jirka Hanika <geo@ff.cuni.cz> support more scsi disks using | |
15 | * eight major numbers. | |
16 | * - Richard Gooch <rgooch@atnf.csiro.au> support devfs. | |
17 | * - Torben Mathiasen <tmm@image.dk> Resource allocation fixes in | |
18 | * sd_init and cleanups. | |
19 | * - Alex Davis <letmein@erols.com> Fix problem where partition info | |
20 | * not being read in sd_open. Fix problem where removable media | |
21 | * could be ejected after sd_open. | |
22 | * - Douglas Gilbert <dgilbert@interlog.com> cleanup for lk 2.5.x | |
23 | * - Badari Pulavarty <pbadari@us.ibm.com>, Matthew Wilcox | |
24 | * <willy@debian.org>, Kurt Garloff <garloff@suse.de>: | |
25 | * Support 32k/1M disks. | |
26 | * | |
27 | * Logging policy (needs CONFIG_SCSI_LOGGING defined): | |
28 | * - setting up transfer: SCSI_LOG_HLQUEUE levels 1 and 2 | |
29 | * - end of transfer (bh + scsi_lib): SCSI_LOG_HLCOMPLETE level 1 | |
30 | * - entering sd_ioctl: SCSI_LOG_IOCTL level 1 | |
31 | * - entering other commands: SCSI_LOG_HLQUEUE level 3 | |
32 | * Note: when the logging level is set by the user, it must be greater | |
33 | * than the level indicated above to trigger output. | |
34 | */ | |
35 | ||
1da177e4 LT |
36 | #include <linux/module.h> |
37 | #include <linux/fs.h> | |
38 | #include <linux/kernel.h> | |
1da177e4 LT |
39 | #include <linux/mm.h> |
40 | #include <linux/bio.h> | |
1da177e4 LT |
41 | #include <linux/hdreg.h> |
42 | #include <linux/errno.h> | |
43 | #include <linux/idr.h> | |
44 | #include <linux/interrupt.h> | |
45 | #include <linux/init.h> | |
46 | #include <linux/blkdev.h> | |
47 | #include <linux/blkpg.h> | |
bca6b067 | 48 | #include <linux/blk-pm.h> |
1da177e4 | 49 | #include <linux/delay.h> |
4f53138f | 50 | #include <linux/rw_hint.h> |
b81e0c23 | 51 | #include <linux/major.h> |
0b950672 | 52 | #include <linux/mutex.h> |
7404ad3b | 53 | #include <linux/string_helpers.h> |
5a0e3ad6 | 54 | #include <linux/slab.h> |
d80210f2 | 55 | #include <linux/sed-opal.h> |
54f57588 | 56 | #include <linux/pm_runtime.h> |
924d55b0 | 57 | #include <linux/pr.h> |
8475c811 | 58 | #include <linux/t10-pi.h> |
7c0f6ba6 | 59 | #include <linux/uaccess.h> |
8f76d151 | 60 | #include <asm/unaligned.h> |
1da177e4 LT |
61 | |
62 | #include <scsi/scsi.h> | |
63 | #include <scsi/scsi_cmnd.h> | |
64 | #include <scsi/scsi_dbg.h> | |
65 | #include <scsi/scsi_device.h> | |
66 | #include <scsi/scsi_driver.h> | |
67 | #include <scsi/scsi_eh.h> | |
68 | #include <scsi/scsi_host.h> | |
69 | #include <scsi/scsi_ioctl.h> | |
1da177e4 | 70 | #include <scsi/scsicam.h> |
0730b163 | 71 | #include <scsi/scsi_common.h> |
1da177e4 | 72 | |
aa91696e | 73 | #include "sd.h" |
a7a20d10 | 74 | #include "scsi_priv.h" |
1da177e4 LT |
75 | #include "scsi_logging.h" |
76 | ||
f018fa55 RH |
77 | MODULE_AUTHOR("Eric Youngdale"); |
78 | MODULE_DESCRIPTION("SCSI disk (sd) driver"); | |
79 | MODULE_LICENSE("GPL"); | |
80 | ||
81 | MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK0_MAJOR); | |
82 | MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK1_MAJOR); | |
83 | MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK2_MAJOR); | |
84 | MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK3_MAJOR); | |
85 | MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK4_MAJOR); | |
86 | MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK5_MAJOR); | |
87 | MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK6_MAJOR); | |
88 | MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK7_MAJOR); | |
89 | MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK8_MAJOR); | |
90 | MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK9_MAJOR); | |
91 | MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK10_MAJOR); | |
92 | MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK11_MAJOR); | |
93 | MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK12_MAJOR); | |
94 | MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK13_MAJOR); | |
95 | MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK14_MAJOR); | |
96 | MODULE_ALIAS_BLOCKDEV_MAJOR(SCSI_DISK15_MAJOR); | |
d7b8bcb0 MT |
97 | MODULE_ALIAS_SCSI_DEVICE(TYPE_DISK); |
98 | MODULE_ALIAS_SCSI_DEVICE(TYPE_MOD); | |
99 | MODULE_ALIAS_SCSI_DEVICE(TYPE_RBC); | |
89d94756 | 100 | MODULE_ALIAS_SCSI_DEVICE(TYPE_ZBC); |
f018fa55 | 101 | |
f615b48c | 102 | #define SD_MINORS 16 |
870d6656 | 103 | |
c98a0eb0 | 104 | static void sd_config_discard(struct scsi_disk *, unsigned int); |
5db44863 | 105 | static void sd_config_write_same(struct scsi_disk *); |
7b3d9545 | 106 | static int sd_revalidate_disk(struct gendisk *); |
72ec24bd | 107 | static void sd_unlock_native_capacity(struct gendisk *disk); |
7b3d9545 | 108 | static void sd_shutdown(struct device *); |
7b3d9545 | 109 | static void sd_read_capacity(struct scsi_disk *sdkp, unsigned char *buffer); |
ee959b00 | 110 | static void scsi_disk_release(struct device *cdev); |
7b3d9545 | 111 | |
f27bac27 | 112 | static DEFINE_IDA(sd_index_ida); |
1da177e4 | 113 | |
61cce6f6 | 114 | static mempool_t *sd_page_pool; |
9c2b9dba | 115 | static struct lock_class_key sd_bio_compl_lkclass; |
4e7392ec | 116 | |
6bdaa1f1 JB |
117 | static const char *sd_cache_types[] = { |
118 | "write through", "none", "write back", | |
119 | "write back, no read (daft)" | |
120 | }; | |
121 | ||
cb2fb68d VC |
122 | static void sd_set_flush_flag(struct scsi_disk *sdkp) |
123 | { | |
eb310e23 | 124 | bool wc = false, fua = false; |
cb2fb68d VC |
125 | |
126 | if (sdkp->WCE) { | |
eb310e23 | 127 | wc = true; |
cb2fb68d | 128 | if (sdkp->DPOFUA) |
eb310e23 | 129 | fua = true; |
cb2fb68d VC |
130 | } |
131 | ||
eb310e23 | 132 | blk_queue_write_cache(sdkp->disk->queue, wc, fua); |
cb2fb68d VC |
133 | } |
134 | ||
ee959b00 | 135 | static ssize_t |
e1ea2351 GKH |
136 | cache_type_store(struct device *dev, struct device_attribute *attr, |
137 | const char *buf, size_t count) | |
6bdaa1f1 | 138 | { |
4c11712a | 139 | int ct, rcd, wce, sp; |
ee959b00 | 140 | struct scsi_disk *sdkp = to_scsi_disk(dev); |
6bdaa1f1 JB |
141 | struct scsi_device *sdp = sdkp->device; |
142 | char buffer[64]; | |
143 | char *buffer_data; | |
144 | struct scsi_mode_data data; | |
145 | struct scsi_sense_hdr sshdr; | |
2ee3e26c | 146 | static const char temp[] = "temporary "; |
c8b7ef36 | 147 | int len, ret; |
6bdaa1f1 | 148 | |
89d94756 | 149 | if (sdp->type != TYPE_DISK && sdp->type != TYPE_ZBC) |
6bdaa1f1 JB |
150 | /* no cache control on RBC devices; theoretically they |
151 | * can do it, but there's probably so many exceptions | |
152 | * it's not worth the risk */ | |
153 | return -EINVAL; | |
154 | ||
39c60a09 JB |
155 | if (strncmp(buf, temp, sizeof(temp) - 1) == 0) { |
156 | buf += sizeof(temp) - 1; | |
157 | sdkp->cache_override = 1; | |
158 | } else { | |
159 | sdkp->cache_override = 0; | |
160 | } | |
161 | ||
4c11712a | 162 | ct = sysfs_match_string(sd_cache_types, buf); |
6bdaa1f1 JB |
163 | if (ct < 0) |
164 | return -EINVAL; | |
4c11712a | 165 | |
6bdaa1f1 | 166 | rcd = ct & 0x01 ? 1 : 0; |
2eefd57b | 167 | wce = (ct & 0x02) && !sdkp->write_prot ? 1 : 0; |
39c60a09 JB |
168 | |
169 | if (sdkp->cache_override) { | |
170 | sdkp->WCE = wce; | |
171 | sdkp->RCD = rcd; | |
cb2fb68d | 172 | sd_set_flush_flag(sdkp); |
39c60a09 JB |
173 | return count; |
174 | } | |
175 | ||
a6cdc35f | 176 | if (scsi_mode_sense(sdp, 0x08, 8, 0, buffer, sizeof(buffer), SD_TIMEOUT, |
0610959f | 177 | sdkp->max_retries, &data, NULL)) |
6bdaa1f1 | 178 | return -EINVAL; |
a9312fb8 | 179 | len = min_t(size_t, sizeof(buffer), data.length - data.header_length - |
6bdaa1f1 JB |
180 | data.block_descriptor_length); |
181 | buffer_data = buffer + data.header_length + | |
182 | data.block_descriptor_length; | |
183 | buffer_data[2] &= ~0x05; | |
184 | buffer_data[2] |= wce << 2 | rcd; | |
185 | sp = buffer_data[0] & 0x80 ? 1 : 0; | |
2c5d16d6 | 186 | buffer_data[0] &= ~0x80; |
6bdaa1f1 | 187 | |
44759979 IM |
188 | /* |
189 | * Ensure WP, DPOFUA, and RESERVED fields are cleared in | |
190 | * received mode parameter buffer before doing MODE SELECT. | |
191 | */ | |
192 | data.device_specific = 0; | |
193 | ||
c8b7ef36 MC |
194 | ret = scsi_mode_select(sdp, 1, sp, buffer_data, len, SD_TIMEOUT, |
195 | sdkp->max_retries, &data, &sshdr); | |
196 | if (ret) { | |
197 | if (ret > 0 && scsi_sense_valid(&sshdr)) | |
e73aec82 | 198 | sd_print_sense_hdr(sdkp, &sshdr); |
6bdaa1f1 JB |
199 | return -EINVAL; |
200 | } | |
033a1b98 | 201 | sd_revalidate_disk(sdkp->disk); |
6bdaa1f1 JB |
202 | return count; |
203 | } | |
204 | ||
ee959b00 | 205 | static ssize_t |
3cc2ffe5 DLM |
206 | manage_start_stop_show(struct device *dev, |
207 | struct device_attribute *attr, char *buf) | |
e1ea2351 GKH |
208 | { |
209 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
210 | struct scsi_device *sdp = sdkp->device; | |
211 | ||
3cc2ffe5 DLM |
212 | return sysfs_emit(buf, "%u\n", |
213 | sdp->manage_system_start_stop && | |
24eca2dc DLM |
214 | sdp->manage_runtime_start_stop && |
215 | sdp->manage_shutdown); | |
e1ea2351 | 216 | } |
3cc2ffe5 | 217 | static DEVICE_ATTR_RO(manage_start_stop); |
e1ea2351 GKH |
218 | |
219 | static ssize_t | |
3cc2ffe5 DLM |
220 | manage_system_start_stop_show(struct device *dev, |
221 | struct device_attribute *attr, char *buf) | |
222 | { | |
223 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
224 | struct scsi_device *sdp = sdkp->device; | |
225 | ||
226 | return sysfs_emit(buf, "%u\n", sdp->manage_system_start_stop); | |
227 | } | |
228 | ||
229 | static ssize_t | |
230 | manage_system_start_stop_store(struct device *dev, | |
231 | struct device_attribute *attr, | |
232 | const char *buf, size_t count) | |
c3c94c5a | 233 | { |
ee959b00 | 234 | struct scsi_disk *sdkp = to_scsi_disk(dev); |
c3c94c5a | 235 | struct scsi_device *sdp = sdkp->device; |
623401ee | 236 | bool v; |
c3c94c5a TH |
237 | |
238 | if (!capable(CAP_SYS_ADMIN)) | |
239 | return -EACCES; | |
240 | ||
623401ee | 241 | if (kstrtobool(buf, &v)) |
242 | return -EINVAL; | |
243 | ||
3cc2ffe5 | 244 | sdp->manage_system_start_stop = v; |
c3c94c5a TH |
245 | |
246 | return count; | |
247 | } | |
3cc2ffe5 DLM |
248 | static DEVICE_ATTR_RW(manage_system_start_stop); |
249 | ||
250 | static ssize_t | |
251 | manage_runtime_start_stop_show(struct device *dev, | |
252 | struct device_attribute *attr, char *buf) | |
253 | { | |
254 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
255 | struct scsi_device *sdp = sdkp->device; | |
256 | ||
257 | return sysfs_emit(buf, "%u\n", sdp->manage_runtime_start_stop); | |
258 | } | |
259 | ||
260 | static ssize_t | |
261 | manage_runtime_start_stop_store(struct device *dev, | |
262 | struct device_attribute *attr, | |
263 | const char *buf, size_t count) | |
264 | { | |
265 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
266 | struct scsi_device *sdp = sdkp->device; | |
267 | bool v; | |
268 | ||
269 | if (!capable(CAP_SYS_ADMIN)) | |
270 | return -EACCES; | |
271 | ||
272 | if (kstrtobool(buf, &v)) | |
273 | return -EINVAL; | |
274 | ||
275 | sdp->manage_runtime_start_stop = v; | |
276 | ||
277 | return count; | |
278 | } | |
279 | static DEVICE_ATTR_RW(manage_runtime_start_stop); | |
c3c94c5a | 280 | |
24eca2dc DLM |
281 | static ssize_t manage_shutdown_show(struct device *dev, |
282 | struct device_attribute *attr, char *buf) | |
283 | { | |
284 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
285 | struct scsi_device *sdp = sdkp->device; | |
286 | ||
287 | return sysfs_emit(buf, "%u\n", sdp->manage_shutdown); | |
288 | } | |
289 | ||
290 | static ssize_t manage_shutdown_store(struct device *dev, | |
291 | struct device_attribute *attr, | |
292 | const char *buf, size_t count) | |
293 | { | |
294 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
295 | struct scsi_device *sdp = sdkp->device; | |
296 | bool v; | |
297 | ||
298 | if (!capable(CAP_SYS_ADMIN)) | |
299 | return -EACCES; | |
300 | ||
301 | if (kstrtobool(buf, &v)) | |
302 | return -EINVAL; | |
303 | ||
304 | sdp->manage_shutdown = v; | |
305 | ||
306 | return count; | |
307 | } | |
308 | static DEVICE_ATTR_RW(manage_shutdown); | |
309 | ||
ee959b00 | 310 | static ssize_t |
e1ea2351 GKH |
311 | allow_restart_show(struct device *dev, struct device_attribute *attr, char *buf) |
312 | { | |
313 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
314 | ||
4c11712a | 315 | return sprintf(buf, "%u\n", sdkp->device->allow_restart); |
e1ea2351 GKH |
316 | } |
317 | ||
318 | static ssize_t | |
319 | allow_restart_store(struct device *dev, struct device_attribute *attr, | |
320 | const char *buf, size_t count) | |
a144c5ae | 321 | { |
658e9a6d | 322 | bool v; |
ee959b00 | 323 | struct scsi_disk *sdkp = to_scsi_disk(dev); |
a144c5ae BK |
324 | struct scsi_device *sdp = sdkp->device; |
325 | ||
326 | if (!capable(CAP_SYS_ADMIN)) | |
327 | return -EACCES; | |
328 | ||
89d94756 | 329 | if (sdp->type != TYPE_DISK && sdp->type != TYPE_ZBC) |
a144c5ae BK |
330 | return -EINVAL; |
331 | ||
658e9a6d | 332 | if (kstrtobool(buf, &v)) |
333 | return -EINVAL; | |
334 | ||
335 | sdp->allow_restart = v; | |
a144c5ae BK |
336 | |
337 | return count; | |
338 | } | |
e1ea2351 | 339 | static DEVICE_ATTR_RW(allow_restart); |
a144c5ae | 340 | |
ee959b00 | 341 | static ssize_t |
e1ea2351 | 342 | cache_type_show(struct device *dev, struct device_attribute *attr, char *buf) |
6bdaa1f1 | 343 | { |
ee959b00 | 344 | struct scsi_disk *sdkp = to_scsi_disk(dev); |
6bdaa1f1 JB |
345 | int ct = sdkp->RCD + 2*sdkp->WCE; |
346 | ||
4c11712a | 347 | return sprintf(buf, "%s\n", sd_cache_types[ct]); |
6bdaa1f1 | 348 | } |
e1ea2351 | 349 | static DEVICE_ATTR_RW(cache_type); |
6bdaa1f1 | 350 | |
ee959b00 | 351 | static ssize_t |
e1ea2351 | 352 | FUA_show(struct device *dev, struct device_attribute *attr, char *buf) |
6bdaa1f1 | 353 | { |
ee959b00 | 354 | struct scsi_disk *sdkp = to_scsi_disk(dev); |
6bdaa1f1 | 355 | |
4c11712a | 356 | return sprintf(buf, "%u\n", sdkp->DPOFUA); |
6bdaa1f1 | 357 | } |
e1ea2351 | 358 | static DEVICE_ATTR_RO(FUA); |
6bdaa1f1 | 359 | |
ee959b00 | 360 | static ssize_t |
e1ea2351 GKH |
361 | protection_type_show(struct device *dev, struct device_attribute *attr, |
362 | char *buf) | |
e0597d70 MP |
363 | { |
364 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
365 | ||
4c11712a | 366 | return sprintf(buf, "%u\n", sdkp->protection_type); |
e0597d70 MP |
367 | } |
368 | ||
8172499a | 369 | static ssize_t |
e1ea2351 GKH |
370 | protection_type_store(struct device *dev, struct device_attribute *attr, |
371 | const char *buf, size_t count) | |
8172499a MP |
372 | { |
373 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
374 | unsigned int val; | |
375 | int err; | |
376 | ||
377 | if (!capable(CAP_SYS_ADMIN)) | |
378 | return -EACCES; | |
379 | ||
380 | err = kstrtouint(buf, 10, &val); | |
381 | ||
382 | if (err) | |
383 | return err; | |
384 | ||
830cc351 | 385 | if (val <= T10_PI_TYPE3_PROTECTION) |
8172499a MP |
386 | sdkp->protection_type = val; |
387 | ||
388 | return count; | |
389 | } | |
e1ea2351 | 390 | static DEVICE_ATTR_RW(protection_type); |
8172499a | 391 | |
518fa8e3 | 392 | static ssize_t |
e1ea2351 GKH |
393 | protection_mode_show(struct device *dev, struct device_attribute *attr, |
394 | char *buf) | |
518fa8e3 MP |
395 | { |
396 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
397 | struct scsi_device *sdp = sdkp->device; | |
398 | unsigned int dif, dix; | |
399 | ||
400 | dif = scsi_host_dif_capable(sdp->host, sdkp->protection_type); | |
401 | dix = scsi_host_dix_capable(sdp->host, sdkp->protection_type); | |
402 | ||
8475c811 | 403 | if (!dix && scsi_host_dix_capable(sdp->host, T10_PI_TYPE0_PROTECTION)) { |
518fa8e3 MP |
404 | dif = 0; |
405 | dix = 1; | |
406 | } | |
407 | ||
408 | if (!dif && !dix) | |
4c11712a | 409 | return sprintf(buf, "none\n"); |
518fa8e3 | 410 | |
4c11712a | 411 | return sprintf(buf, "%s%u\n", dix ? "dix" : "dif", dif); |
518fa8e3 | 412 | } |
e1ea2351 | 413 | static DEVICE_ATTR_RO(protection_mode); |
518fa8e3 | 414 | |
e0597d70 | 415 | static ssize_t |
e1ea2351 | 416 | app_tag_own_show(struct device *dev, struct device_attribute *attr, char *buf) |
e0597d70 MP |
417 | { |
418 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
419 | ||
4c11712a | 420 | return sprintf(buf, "%u\n", sdkp->ATO); |
e0597d70 | 421 | } |
e1ea2351 | 422 | static DEVICE_ATTR_RO(app_tag_own); |
e0597d70 | 423 | |
e339c1a7 | 424 | static ssize_t |
e1ea2351 GKH |
425 | thin_provisioning_show(struct device *dev, struct device_attribute *attr, |
426 | char *buf) | |
e339c1a7 MP |
427 | { |
428 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
429 | ||
4c11712a | 430 | return sprintf(buf, "%u\n", sdkp->lbpme); |
c98a0eb0 | 431 | } |
e1ea2351 | 432 | static DEVICE_ATTR_RO(thin_provisioning); |
c98a0eb0 | 433 | |
4c11712a | 434 | /* sysfs_match_string() requires dense arrays */ |
c98a0eb0 MP |
435 | static const char *lbp_mode[] = { |
436 | [SD_LBP_FULL] = "full", | |
437 | [SD_LBP_UNMAP] = "unmap", | |
438 | [SD_LBP_WS16] = "writesame_16", | |
439 | [SD_LBP_WS10] = "writesame_10", | |
440 | [SD_LBP_ZERO] = "writesame_zero", | |
441 | [SD_LBP_DISABLE] = "disabled", | |
442 | }; | |
443 | ||
444 | static ssize_t | |
e1ea2351 GKH |
445 | provisioning_mode_show(struct device *dev, struct device_attribute *attr, |
446 | char *buf) | |
c98a0eb0 MP |
447 | { |
448 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
449 | ||
4c11712a | 450 | return sprintf(buf, "%s\n", lbp_mode[sdkp->provisioning_mode]); |
c98a0eb0 MP |
451 | } |
452 | ||
453 | static ssize_t | |
e1ea2351 GKH |
454 | provisioning_mode_store(struct device *dev, struct device_attribute *attr, |
455 | const char *buf, size_t count) | |
c98a0eb0 MP |
456 | { |
457 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
458 | struct scsi_device *sdp = sdkp->device; | |
4c11712a | 459 | int mode; |
c98a0eb0 MP |
460 | |
461 | if (!capable(CAP_SYS_ADMIN)) | |
462 | return -EACCES; | |
463 | ||
89d94756 HR |
464 | if (sd_is_zoned(sdkp)) { |
465 | sd_config_discard(sdkp, SD_LBP_DISABLE); | |
466 | return count; | |
467 | } | |
468 | ||
c98a0eb0 MP |
469 | if (sdp->type != TYPE_DISK) |
470 | return -EINVAL; | |
471 | ||
4c11712a MP |
472 | mode = sysfs_match_string(lbp_mode, buf); |
473 | if (mode < 0) | |
c98a0eb0 MP |
474 | return -EINVAL; |
475 | ||
4c11712a MP |
476 | sd_config_discard(sdkp, mode); |
477 | ||
c98a0eb0 | 478 | return count; |
e339c1a7 | 479 | } |
e1ea2351 | 480 | static DEVICE_ATTR_RW(provisioning_mode); |
e339c1a7 | 481 | |
4c11712a | 482 | /* sysfs_match_string() requires dense arrays */ |
e6bd9312 MP |
483 | static const char *zeroing_mode[] = { |
484 | [SD_ZERO_WRITE] = "write", | |
485 | [SD_ZERO_WS] = "writesame", | |
486 | [SD_ZERO_WS16_UNMAP] = "writesame_16_unmap", | |
487 | [SD_ZERO_WS10_UNMAP] = "writesame_10_unmap", | |
488 | }; | |
489 | ||
490 | static ssize_t | |
491 | zeroing_mode_show(struct device *dev, struct device_attribute *attr, | |
492 | char *buf) | |
493 | { | |
494 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
495 | ||
4c11712a | 496 | return sprintf(buf, "%s\n", zeroing_mode[sdkp->zeroing_mode]); |
e6bd9312 MP |
497 | } |
498 | ||
499 | static ssize_t | |
500 | zeroing_mode_store(struct device *dev, struct device_attribute *attr, | |
501 | const char *buf, size_t count) | |
502 | { | |
503 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
4c11712a | 504 | int mode; |
e6bd9312 MP |
505 | |
506 | if (!capable(CAP_SYS_ADMIN)) | |
507 | return -EACCES; | |
508 | ||
4c11712a MP |
509 | mode = sysfs_match_string(zeroing_mode, buf); |
510 | if (mode < 0) | |
e6bd9312 MP |
511 | return -EINVAL; |
512 | ||
4c11712a MP |
513 | sdkp->zeroing_mode = mode; |
514 | ||
e6bd9312 MP |
515 | return count; |
516 | } | |
517 | static DEVICE_ATTR_RW(zeroing_mode); | |
518 | ||
18a4d0a2 | 519 | static ssize_t |
e1ea2351 GKH |
520 | max_medium_access_timeouts_show(struct device *dev, |
521 | struct device_attribute *attr, char *buf) | |
18a4d0a2 MP |
522 | { |
523 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
524 | ||
4c11712a | 525 | return sprintf(buf, "%u\n", sdkp->max_medium_access_timeouts); |
18a4d0a2 MP |
526 | } |
527 | ||
528 | static ssize_t | |
e1ea2351 GKH |
529 | max_medium_access_timeouts_store(struct device *dev, |
530 | struct device_attribute *attr, const char *buf, | |
531 | size_t count) | |
18a4d0a2 MP |
532 | { |
533 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
534 | int err; | |
535 | ||
536 | if (!capable(CAP_SYS_ADMIN)) | |
537 | return -EACCES; | |
538 | ||
539 | err = kstrtouint(buf, 10, &sdkp->max_medium_access_timeouts); | |
540 | ||
541 | return err ? err : count; | |
542 | } | |
e1ea2351 | 543 | static DEVICE_ATTR_RW(max_medium_access_timeouts); |
18a4d0a2 | 544 | |
5db44863 | 545 | static ssize_t |
e1ea2351 GKH |
546 | max_write_same_blocks_show(struct device *dev, struct device_attribute *attr, |
547 | char *buf) | |
5db44863 MP |
548 | { |
549 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
550 | ||
4c11712a | 551 | return sprintf(buf, "%u\n", sdkp->max_ws_blocks); |
5db44863 MP |
552 | } |
553 | ||
554 | static ssize_t | |
e1ea2351 GKH |
555 | max_write_same_blocks_store(struct device *dev, struct device_attribute *attr, |
556 | const char *buf, size_t count) | |
5db44863 MP |
557 | { |
558 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
559 | struct scsi_device *sdp = sdkp->device; | |
560 | unsigned long max; | |
561 | int err; | |
562 | ||
563 | if (!capable(CAP_SYS_ADMIN)) | |
564 | return -EACCES; | |
565 | ||
89d94756 | 566 | if (sdp->type != TYPE_DISK && sdp->type != TYPE_ZBC) |
5db44863 MP |
567 | return -EINVAL; |
568 | ||
569 | err = kstrtoul(buf, 10, &max); | |
570 | ||
571 | if (err) | |
572 | return err; | |
573 | ||
574 | if (max == 0) | |
575 | sdp->no_write_same = 1; | |
66c28f97 MP |
576 | else if (max <= SD_MAX_WS16_BLOCKS) { |
577 | sdp->no_write_same = 0; | |
5db44863 | 578 | sdkp->max_ws_blocks = max; |
66c28f97 | 579 | } |
5db44863 MP |
580 | |
581 | sd_config_write_same(sdkp); | |
582 | ||
583 | return count; | |
584 | } | |
e1ea2351 GKH |
585 | static DEVICE_ATTR_RW(max_write_same_blocks); |
586 | ||
c5f88522 DLM |
587 | static ssize_t |
588 | zoned_cap_show(struct device *dev, struct device_attribute *attr, char *buf) | |
589 | { | |
590 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
591 | ||
592 | if (sdkp->device->type == TYPE_ZBC) | |
593 | return sprintf(buf, "host-managed\n"); | |
594 | if (sdkp->zoned == 1) | |
595 | return sprintf(buf, "host-aware\n"); | |
596 | if (sdkp->zoned == 2) | |
597 | return sprintf(buf, "drive-managed\n"); | |
598 | return sprintf(buf, "none\n"); | |
599 | } | |
600 | static DEVICE_ATTR_RO(zoned_cap); | |
601 | ||
0610959f MC |
602 | static ssize_t |
603 | max_retries_store(struct device *dev, struct device_attribute *attr, | |
604 | const char *buf, size_t count) | |
605 | { | |
606 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
607 | struct scsi_device *sdev = sdkp->device; | |
608 | int retries, err; | |
609 | ||
610 | err = kstrtoint(buf, 10, &retries); | |
611 | if (err) | |
612 | return err; | |
613 | ||
614 | if (retries == SCSI_CMD_RETRIES_NO_LIMIT || retries <= SD_MAX_RETRIES) { | |
615 | sdkp->max_retries = retries; | |
616 | return count; | |
617 | } | |
618 | ||
619 | sdev_printk(KERN_ERR, sdev, "max_retries must be between -1 and %d\n", | |
620 | SD_MAX_RETRIES); | |
621 | return -EINVAL; | |
622 | } | |
623 | ||
624 | static ssize_t | |
625 | max_retries_show(struct device *dev, struct device_attribute *attr, | |
626 | char *buf) | |
627 | { | |
628 | struct scsi_disk *sdkp = to_scsi_disk(dev); | |
629 | ||
630 | return sprintf(buf, "%d\n", sdkp->max_retries); | |
631 | } | |
632 | ||
633 | static DEVICE_ATTR_RW(max_retries); | |
634 | ||
e1ea2351 GKH |
635 | static struct attribute *sd_disk_attrs[] = { |
636 | &dev_attr_cache_type.attr, | |
637 | &dev_attr_FUA.attr, | |
638 | &dev_attr_allow_restart.attr, | |
639 | &dev_attr_manage_start_stop.attr, | |
3cc2ffe5 DLM |
640 | &dev_attr_manage_system_start_stop.attr, |
641 | &dev_attr_manage_runtime_start_stop.attr, | |
24eca2dc | 642 | &dev_attr_manage_shutdown.attr, |
e1ea2351 GKH |
643 | &dev_attr_protection_type.attr, |
644 | &dev_attr_protection_mode.attr, | |
645 | &dev_attr_app_tag_own.attr, | |
646 | &dev_attr_thin_provisioning.attr, | |
647 | &dev_attr_provisioning_mode.attr, | |
e6bd9312 | 648 | &dev_attr_zeroing_mode.attr, |
e1ea2351 GKH |
649 | &dev_attr_max_write_same_blocks.attr, |
650 | &dev_attr_max_medium_access_timeouts.attr, | |
c5f88522 | 651 | &dev_attr_zoned_cap.attr, |
0610959f | 652 | &dev_attr_max_retries.attr, |
e1ea2351 | 653 | NULL, |
6bdaa1f1 | 654 | }; |
e1ea2351 | 655 | ATTRIBUTE_GROUPS(sd_disk); |
6bdaa1f1 JB |
656 | |
657 | static struct class sd_disk_class = { | |
658 | .name = "scsi_disk", | |
ee959b00 | 659 | .dev_release = scsi_disk_release, |
e1ea2351 | 660 | .dev_groups = sd_disk_groups, |
6bdaa1f1 | 661 | }; |
1da177e4 | 662 | |
0761df9c | 663 | /* |
996e509b CH |
664 | * Don't request a new module, as that could deadlock in multipath |
665 | * environment. | |
0761df9c | 666 | */ |
996e509b | 667 | static void sd_default_probe(dev_t devt) |
0761df9c | 668 | { |
0761df9c HR |
669 | } |
670 | ||
1da177e4 LT |
671 | /* |
672 | * Device no to disk mapping: | |
673 | * | |
674 | * major disc2 disc p1 | |
675 | * |............|.............|....|....| <- dev_t | |
676 | * 31 20 19 8 7 4 3 0 | |
677 | * | |
678 | * Inside a major, we have 16k disks, however mapped non- | |
679 | * contiguously. The first 16 disks are for major0, the next | |
680 | * ones with major1, ... Disk 256 is for major0 again, disk 272 | |
681 | * for major1, ... | |
682 | * As we stay compatible with our numbering scheme, we can reuse | |
683 | * the well-know SCSI majors 8, 65--71, 136--143. | |
684 | */ | |
685 | static int sd_major(int major_idx) | |
686 | { | |
687 | switch (major_idx) { | |
688 | case 0: | |
689 | return SCSI_DISK0_MAJOR; | |
690 | case 1 ... 7: | |
691 | return SCSI_DISK1_MAJOR + major_idx - 1; | |
692 | case 8 ... 15: | |
693 | return SCSI_DISK8_MAJOR + major_idx - 8; | |
694 | default: | |
695 | BUG(); | |
696 | return 0; /* shut up gcc */ | |
697 | } | |
698 | } | |
699 | ||
d80210f2 CH |
700 | #ifdef CONFIG_BLK_SED_OPAL |
701 | static int sd_sec_submit(void *data, u16 spsp, u8 secp, void *buffer, | |
702 | size_t len, bool send) | |
703 | { | |
0610959f MC |
704 | struct scsi_disk *sdkp = data; |
705 | struct scsi_device *sdev = sdkp->device; | |
d80210f2 | 706 | u8 cdb[12] = { 0, }; |
af16cd63 MC |
707 | const struct scsi_exec_args exec_args = { |
708 | .req_flags = BLK_MQ_REQ_PM, | |
709 | }; | |
d80210f2 CH |
710 | int ret; |
711 | ||
712 | cdb[0] = send ? SECURITY_PROTOCOL_OUT : SECURITY_PROTOCOL_IN; | |
713 | cdb[1] = secp; | |
714 | put_unaligned_be16(spsp, &cdb[2]); | |
715 | put_unaligned_be32(len, &cdb[6]); | |
716 | ||
af16cd63 MC |
717 | ret = scsi_execute_cmd(sdev, cdb, send ? REQ_OP_DRV_OUT : REQ_OP_DRV_IN, |
718 | buffer, len, SD_TIMEOUT, sdkp->max_retries, | |
719 | &exec_args); | |
d80210f2 CH |
720 | return ret <= 0 ? ret : -EIO; |
721 | } | |
722 | #endif /* CONFIG_BLK_SED_OPAL */ | |
723 | ||
082c2cd2 JG |
724 | /* |
725 | * Look up the DIX operation based on whether the command is read or | |
726 | * write and whether dix and dif are enabled. | |
727 | */ | |
728 | static unsigned int sd_prot_op(bool write, bool dix, bool dif) | |
729 | { | |
730 | /* Lookup table: bit 2 (write), bit 1 (dix), bit 0 (dif) */ | |
731 | static const unsigned int ops[] = { /* wrt dix dif */ | |
732 | SCSI_PROT_NORMAL, /* 0 0 0 */ | |
733 | SCSI_PROT_READ_STRIP, /* 0 0 1 */ | |
734 | SCSI_PROT_READ_INSERT, /* 0 1 0 */ | |
735 | SCSI_PROT_READ_PASS, /* 0 1 1 */ | |
736 | SCSI_PROT_NORMAL, /* 1 0 0 */ | |
737 | SCSI_PROT_WRITE_INSERT, /* 1 0 1 */ | |
738 | SCSI_PROT_WRITE_STRIP, /* 1 1 0 */ | |
739 | SCSI_PROT_WRITE_PASS, /* 1 1 1 */ | |
740 | }; | |
741 | ||
742 | return ops[write << 2 | dix << 1 | dif]; | |
743 | } | |
744 | ||
745 | /* | |
746 | * Returns a mask of the protection flags that are valid for a given DIX | |
747 | * operation. | |
748 | */ | |
749 | static unsigned int sd_prot_flag_mask(unsigned int prot_op) | |
750 | { | |
751 | static const unsigned int flag_mask[] = { | |
752 | [SCSI_PROT_NORMAL] = 0, | |
753 | ||
754 | [SCSI_PROT_READ_STRIP] = SCSI_PROT_TRANSFER_PI | | |
755 | SCSI_PROT_GUARD_CHECK | | |
756 | SCSI_PROT_REF_CHECK | | |
757 | SCSI_PROT_REF_INCREMENT, | |
758 | ||
759 | [SCSI_PROT_READ_INSERT] = SCSI_PROT_REF_INCREMENT | | |
760 | SCSI_PROT_IP_CHECKSUM, | |
761 | ||
762 | [SCSI_PROT_READ_PASS] = SCSI_PROT_TRANSFER_PI | | |
763 | SCSI_PROT_GUARD_CHECK | | |
764 | SCSI_PROT_REF_CHECK | | |
765 | SCSI_PROT_REF_INCREMENT | | |
766 | SCSI_PROT_IP_CHECKSUM, | |
767 | ||
768 | [SCSI_PROT_WRITE_INSERT] = SCSI_PROT_TRANSFER_PI | | |
769 | SCSI_PROT_REF_INCREMENT, | |
770 | ||
771 | [SCSI_PROT_WRITE_STRIP] = SCSI_PROT_GUARD_CHECK | | |
772 | SCSI_PROT_REF_CHECK | | |
773 | SCSI_PROT_REF_INCREMENT | | |
774 | SCSI_PROT_IP_CHECKSUM, | |
775 | ||
776 | [SCSI_PROT_WRITE_PASS] = SCSI_PROT_TRANSFER_PI | | |
777 | SCSI_PROT_GUARD_CHECK | | |
778 | SCSI_PROT_REF_CHECK | | |
779 | SCSI_PROT_REF_INCREMENT | | |
780 | SCSI_PROT_IP_CHECKSUM, | |
781 | }; | |
782 | ||
783 | return flag_mask[prot_op]; | |
784 | } | |
785 | ||
c611529e MP |
786 | static unsigned char sd_setup_protect_cmnd(struct scsi_cmnd *scmd, |
787 | unsigned int dix, unsigned int dif) | |
35e1a5d9 | 788 | { |
5999ccff BVA |
789 | struct request *rq = scsi_cmd_to_rq(scmd); |
790 | struct bio *bio = rq->bio; | |
791 | unsigned int prot_op = sd_prot_op(rq_data_dir(rq), dix, dif); | |
c611529e MP |
792 | unsigned int protect = 0; |
793 | ||
794 | if (dix) { /* DIX Type 0, 1, 2, 3 */ | |
795 | if (bio_integrity_flagged(bio, BIP_IP_CHECKSUM)) | |
796 | scmd->prot_flags |= SCSI_PROT_IP_CHECKSUM; | |
797 | ||
798 | if (bio_integrity_flagged(bio, BIP_CTRL_NOCHECK) == false) | |
799 | scmd->prot_flags |= SCSI_PROT_GUARD_CHECK; | |
800 | } | |
801 | ||
8475c811 | 802 | if (dif != T10_PI_TYPE3_PROTECTION) { /* DIX/DIF Type 0, 1, 2 */ |
c611529e MP |
803 | scmd->prot_flags |= SCSI_PROT_REF_INCREMENT; |
804 | ||
805 | if (bio_integrity_flagged(bio, BIP_CTRL_NOCHECK) == false) | |
806 | scmd->prot_flags |= SCSI_PROT_REF_CHECK; | |
807 | } | |
808 | ||
809 | if (dif) { /* DIX/DIF Type 1, 2, 3 */ | |
810 | scmd->prot_flags |= SCSI_PROT_TRANSFER_PI; | |
811 | ||
812 | if (bio_integrity_flagged(bio, BIP_DISK_NOCHECK)) | |
813 | protect = 3 << 5; /* Disable target PI checking */ | |
814 | else | |
815 | protect = 1 << 5; /* Enable target PI checking */ | |
35e1a5d9 MP |
816 | } |
817 | ||
818 | scsi_set_prot_op(scmd, prot_op); | |
819 | scsi_set_prot_type(scmd, dif); | |
c611529e MP |
820 | scmd->prot_flags &= sd_prot_flag_mask(prot_op); |
821 | ||
822 | return protect; | |
35e1a5d9 MP |
823 | } |
824 | ||
c98a0eb0 MP |
825 | static void sd_config_discard(struct scsi_disk *sdkp, unsigned int mode) |
826 | { | |
827 | struct request_queue *q = sdkp->disk->queue; | |
828 | unsigned int logical_block_size = sdkp->device->sector_size; | |
829 | unsigned int max_blocks = 0; | |
830 | ||
bcd069bb MP |
831 | q->limits.discard_alignment = |
832 | sdkp->unmap_alignment * logical_block_size; | |
833 | q->limits.discard_granularity = | |
834 | max(sdkp->physical_block_size, | |
835 | sdkp->unmap_granularity * logical_block_size); | |
89730393 MP |
836 | sdkp->provisioning_mode = mode; |
837 | ||
c98a0eb0 MP |
838 | switch (mode) { |
839 | ||
4c11712a | 840 | case SD_LBP_FULL: |
c98a0eb0 | 841 | case SD_LBP_DISABLE: |
2bb4cd5c | 842 | blk_queue_max_discard_sectors(q, 0); |
c98a0eb0 MP |
843 | return; |
844 | ||
845 | case SD_LBP_UNMAP: | |
5db44863 MP |
846 | max_blocks = min_not_zero(sdkp->max_unmap_blocks, |
847 | (u32)SD_MAX_WS16_BLOCKS); | |
c98a0eb0 MP |
848 | break; |
849 | ||
850 | case SD_LBP_WS16: | |
28a0bc41 MP |
851 | if (sdkp->device->unmap_limit_for_ws) |
852 | max_blocks = sdkp->max_unmap_blocks; | |
853 | else | |
854 | max_blocks = sdkp->max_ws_blocks; | |
855 | ||
856 | max_blocks = min_not_zero(max_blocks, (u32)SD_MAX_WS16_BLOCKS); | |
c98a0eb0 MP |
857 | break; |
858 | ||
859 | case SD_LBP_WS10: | |
28a0bc41 MP |
860 | if (sdkp->device->unmap_limit_for_ws) |
861 | max_blocks = sdkp->max_unmap_blocks; | |
862 | else | |
863 | max_blocks = sdkp->max_ws_blocks; | |
864 | ||
865 | max_blocks = min_not_zero(max_blocks, (u32)SD_MAX_WS10_BLOCKS); | |
c98a0eb0 MP |
866 | break; |
867 | ||
868 | case SD_LBP_ZERO: | |
5db44863 MP |
869 | max_blocks = min_not_zero(sdkp->max_ws_blocks, |
870 | (u32)SD_MAX_WS10_BLOCKS); | |
c98a0eb0 MP |
871 | break; |
872 | } | |
873 | ||
2bb4cd5c | 874 | blk_queue_max_discard_sectors(q, max_blocks * (logical_block_size >> 9)); |
c98a0eb0 MP |
875 | } |
876 | ||
f1e117cb CH |
877 | static void *sd_set_special_bvec(struct request *rq, unsigned int data_len) |
878 | { | |
879 | struct page *page; | |
880 | ||
881 | page = mempool_alloc(sd_page_pool, GFP_ATOMIC); | |
882 | if (!page) | |
883 | return NULL; | |
884 | clear_highpage(page); | |
885 | bvec_set_page(&rq->special_vec, page, data_len, 0); | |
886 | rq->rq_flags |= RQF_SPECIAL_PAYLOAD; | |
887 | return bvec_virt(&rq->special_vec); | |
888 | } | |
889 | ||
159b2cbf | 890 | static blk_status_t sd_setup_unmap_cmnd(struct scsi_cmnd *cmd) |
e339c1a7 | 891 | { |
6a7b4398 | 892 | struct scsi_device *sdp = cmd->device; |
5999ccff | 893 | struct request *rq = scsi_cmd_to_rq(cmd); |
f3fa33ac | 894 | struct scsi_disk *sdkp = scsi_disk(rq->q->disk); |
c6c93fdd MP |
895 | u64 lba = sectors_to_logical(sdp, blk_rq_pos(rq)); |
896 | u32 nr_blocks = sectors_to_logical(sdp, blk_rq_sectors(rq)); | |
81d926e8 | 897 | unsigned int data_len = 24; |
c98a0eb0 | 898 | char *buf; |
e339c1a7 | 899 | |
f1e117cb CH |
900 | buf = sd_set_special_bvec(rq, data_len); |
901 | if (!buf) | |
159b2cbf | 902 | return BLK_STS_RESOURCE; |
66ac0280 | 903 | |
81d926e8 CH |
904 | cmd->cmd_len = 10; |
905 | cmd->cmnd[0] = UNMAP; | |
906 | cmd->cmnd[8] = 24; | |
e339c1a7 | 907 | |
81d926e8 CH |
908 | put_unaligned_be16(6 + 16, &buf[0]); |
909 | put_unaligned_be16(16, &buf[2]); | |
c6c93fdd MP |
910 | put_unaligned_be64(lba, &buf[8]); |
911 | put_unaligned_be32(nr_blocks, &buf[16]); | |
e339c1a7 | 912 | |
0610959f | 913 | cmd->allowed = sdkp->max_retries; |
81d926e8 CH |
914 | cmd->transfersize = data_len; |
915 | rq->timeout = SD_TIMEOUT; | |
e339c1a7 | 916 | |
7007e9dd | 917 | return scsi_alloc_sgtables(cmd); |
81d926e8 | 918 | } |
c98a0eb0 | 919 | |
159b2cbf CH |
920 | static blk_status_t sd_setup_write_same16_cmnd(struct scsi_cmnd *cmd, |
921 | bool unmap) | |
81d926e8 CH |
922 | { |
923 | struct scsi_device *sdp = cmd->device; | |
5999ccff | 924 | struct request *rq = scsi_cmd_to_rq(cmd); |
f3fa33ac | 925 | struct scsi_disk *sdkp = scsi_disk(rq->q->disk); |
c6c93fdd MP |
926 | u64 lba = sectors_to_logical(sdp, blk_rq_pos(rq)); |
927 | u32 nr_blocks = sectors_to_logical(sdp, blk_rq_sectors(rq)); | |
81d926e8 | 928 | u32 data_len = sdp->sector_size; |
c98a0eb0 | 929 | |
f1e117cb | 930 | if (!sd_set_special_bvec(rq, data_len)) |
159b2cbf | 931 | return BLK_STS_RESOURCE; |
c98a0eb0 | 932 | |
81d926e8 CH |
933 | cmd->cmd_len = 16; |
934 | cmd->cmnd[0] = WRITE_SAME_16; | |
02d26103 | 935 | if (unmap) |
6a7b4398 | 936 | cmd->cmnd[1] = 0x8; /* UNMAP */ |
c6c93fdd MP |
937 | put_unaligned_be64(lba, &cmd->cmnd[2]); |
938 | put_unaligned_be32(nr_blocks, &cmd->cmnd[10]); | |
66ac0280 | 939 | |
0610959f | 940 | cmd->allowed = sdkp->max_retries; |
81d926e8 | 941 | cmd->transfersize = data_len; |
02d26103 | 942 | rq->timeout = unmap ? SD_TIMEOUT : SD_WRITE_SAME_TIMEOUT; |
c98a0eb0 | 943 | |
7007e9dd | 944 | return scsi_alloc_sgtables(cmd); |
81d926e8 | 945 | } |
c98a0eb0 | 946 | |
159b2cbf CH |
947 | static blk_status_t sd_setup_write_same10_cmnd(struct scsi_cmnd *cmd, |
948 | bool unmap) | |
81d926e8 CH |
949 | { |
950 | struct scsi_device *sdp = cmd->device; | |
5999ccff | 951 | struct request *rq = scsi_cmd_to_rq(cmd); |
f3fa33ac | 952 | struct scsi_disk *sdkp = scsi_disk(rq->q->disk); |
c6c93fdd MP |
953 | u64 lba = sectors_to_logical(sdp, blk_rq_pos(rq)); |
954 | u32 nr_blocks = sectors_to_logical(sdp, blk_rq_sectors(rq)); | |
81d926e8 | 955 | u32 data_len = sdp->sector_size; |
c98a0eb0 | 956 | |
f1e117cb | 957 | if (!sd_set_special_bvec(rq, data_len)) |
159b2cbf | 958 | return BLK_STS_RESOURCE; |
e339c1a7 | 959 | |
81d926e8 CH |
960 | cmd->cmd_len = 10; |
961 | cmd->cmnd[0] = WRITE_SAME; | |
962 | if (unmap) | |
963 | cmd->cmnd[1] = 0x8; /* UNMAP */ | |
c6c93fdd MP |
964 | put_unaligned_be32(lba, &cmd->cmnd[2]); |
965 | put_unaligned_be16(nr_blocks, &cmd->cmnd[7]); | |
6a7b4398 | 966 | |
0610959f | 967 | cmd->allowed = sdkp->max_retries; |
81d926e8 | 968 | cmd->transfersize = data_len; |
02d26103 | 969 | rq->timeout = unmap ? SD_TIMEOUT : SD_WRITE_SAME_TIMEOUT; |
6a7b4398 | 970 | |
7007e9dd | 971 | return scsi_alloc_sgtables(cmd); |
f1126e95 | 972 | } |
f9d03f96 | 973 | |
159b2cbf | 974 | static blk_status_t sd_setup_write_zeroes_cmnd(struct scsi_cmnd *cmd) |
02d26103 | 975 | { |
5999ccff | 976 | struct request *rq = scsi_cmd_to_rq(cmd); |
02d26103 | 977 | struct scsi_device *sdp = cmd->device; |
f3fa33ac | 978 | struct scsi_disk *sdkp = scsi_disk(rq->q->disk); |
c6c93fdd MP |
979 | u64 lba = sectors_to_logical(sdp, blk_rq_pos(rq)); |
980 | u32 nr_blocks = sectors_to_logical(sdp, blk_rq_sectors(rq)); | |
02d26103 | 981 | |
e4b87837 | 982 | if (!(rq->cmd_flags & REQ_NOUNMAP)) { |
e6bd9312 MP |
983 | switch (sdkp->zeroing_mode) { |
984 | case SD_ZERO_WS16_UNMAP: | |
39051dd8 | 985 | return sd_setup_write_same16_cmnd(cmd, true); |
e6bd9312 | 986 | case SD_ZERO_WS10_UNMAP: |
39051dd8 | 987 | return sd_setup_write_same10_cmnd(cmd, true); |
e4b87837 CH |
988 | } |
989 | } | |
c98a0eb0 | 990 | |
e5cc9002 EM |
991 | if (sdp->no_write_same) { |
992 | rq->rq_flags |= RQF_QUIET; | |
159b2cbf | 993 | return BLK_STS_TARGET; |
e5cc9002 | 994 | } |
ed44fd7f | 995 | |
c6c93fdd | 996 | if (sdkp->ws16 || lba > 0xffffffff || nr_blocks > 0xffff) |
39051dd8 | 997 | return sd_setup_write_same16_cmnd(cmd, false); |
ed44fd7f | 998 | |
39051dd8 | 999 | return sd_setup_write_same10_cmnd(cmd, false); |
f1126e95 FT |
1000 | } |
1001 | ||
5db44863 MP |
1002 | static void sd_config_write_same(struct scsi_disk *sdkp) |
1003 | { | |
1004 | struct request_queue *q = sdkp->disk->queue; | |
1005 | unsigned int logical_block_size = sdkp->device->sector_size; | |
5db44863 MP |
1006 | |
1007 | if (sdkp->device->no_write_same) { | |
1008 | sdkp->max_ws_blocks = 0; | |
1009 | goto out; | |
1010 | } | |
1011 | ||
1012 | /* Some devices can not handle block counts above 0xffff despite | |
1013 | * supporting WRITE SAME(16). Consequently we default to 64k | |
1014 | * blocks per I/O unless the device explicitly advertises a | |
1015 | * bigger limit. | |
1016 | */ | |
66c28f97 MP |
1017 | if (sdkp->max_ws_blocks > SD_MAX_WS10_BLOCKS) |
1018 | sdkp->max_ws_blocks = min_not_zero(sdkp->max_ws_blocks, | |
1019 | (u32)SD_MAX_WS16_BLOCKS); | |
1020 | else if (sdkp->ws16 || sdkp->ws10 || sdkp->device->no_report_opcodes) | |
1021 | sdkp->max_ws_blocks = min_not_zero(sdkp->max_ws_blocks, | |
1022 | (u32)SD_MAX_WS10_BLOCKS); | |
1023 | else { | |
1024 | sdkp->device->no_write_same = 1; | |
1025 | sdkp->max_ws_blocks = 0; | |
1026 | } | |
5db44863 | 1027 | |
e6bd9312 MP |
1028 | if (sdkp->lbprz && sdkp->lbpws) |
1029 | sdkp->zeroing_mode = SD_ZERO_WS16_UNMAP; | |
1030 | else if (sdkp->lbprz && sdkp->lbpws10) | |
1031 | sdkp->zeroing_mode = SD_ZERO_WS10_UNMAP; | |
1032 | else if (sdkp->max_ws_blocks) | |
1033 | sdkp->zeroing_mode = SD_ZERO_WS; | |
1034 | else | |
1035 | sdkp->zeroing_mode = SD_ZERO_WRITE; | |
1036 | ||
b7af62a9 DLM |
1037 | if (sdkp->max_ws_blocks && |
1038 | sdkp->physical_block_size > logical_block_size) { | |
1039 | /* | |
1040 | * Reporting a maximum number of blocks that is not aligned | |
1041 | * on the device physical size would cause a large write same | |
1042 | * request to be split into physically unaligned chunks by | |
e383e16e CH |
1043 | * __blkdev_issue_write_zeroes() even if the caller of this |
1044 | * functions took care to align the large request. So make sure | |
1045 | * the maximum reported is aligned to the device physical block | |
1046 | * size. This is only an optional optimization for regular | |
1047 | * disks, but this is mandatory to avoid failure of large write | |
1048 | * same requests directed at sequential write required zones of | |
1049 | * host-managed ZBC disks. | |
b7af62a9 DLM |
1050 | */ |
1051 | sdkp->max_ws_blocks = | |
1052 | round_down(sdkp->max_ws_blocks, | |
1053 | bytes_to_logical(sdkp->device, | |
1054 | sdkp->physical_block_size)); | |
1055 | } | |
1056 | ||
5db44863 | 1057 | out: |
02d26103 CH |
1058 | blk_queue_max_write_zeroes_sectors(q, sdkp->max_ws_blocks * |
1059 | (logical_block_size >> 9)); | |
5db44863 MP |
1060 | } |
1061 | ||
159b2cbf | 1062 | static blk_status_t sd_setup_flush_cmnd(struct scsi_cmnd *cmd) |
90467c29 | 1063 | { |
5999ccff | 1064 | struct request *rq = scsi_cmd_to_rq(cmd); |
f3fa33ac | 1065 | struct scsi_disk *sdkp = scsi_disk(rq->q->disk); |
a118c6c1 CH |
1066 | |
1067 | /* flush requests don't perform I/O, zero the S/G table */ | |
1068 | memset(&cmd->sdb, 0, sizeof(cmd->sdb)); | |
90467c29 | 1069 | |
42c59077 SK |
1070 | if (cmd->device->use_16_for_sync) { |
1071 | cmd->cmnd[0] = SYNCHRONIZE_CACHE_16; | |
1072 | cmd->cmd_len = 16; | |
1073 | } else { | |
1074 | cmd->cmnd[0] = SYNCHRONIZE_CACHE; | |
1075 | cmd->cmd_len = 10; | |
1076 | } | |
a118c6c1 | 1077 | cmd->transfersize = 0; |
0610959f | 1078 | cmd->allowed = sdkp->max_retries; |
a118c6c1 | 1079 | |
26b9fd8b | 1080 | rq->timeout = rq->q->rq_timeout * SD_FLUSH_TIMEOUT_MULTIPLIER; |
159b2cbf | 1081 | return BLK_STS_OK; |
90467c29 FT |
1082 | } |
1083 | ||
4f53138f BVA |
1084 | /** |
1085 | * sd_group_number() - Compute the GROUP NUMBER field | |
1086 | * @cmd: SCSI command for which to compute the value of the six-bit GROUP NUMBER | |
1087 | * field. | |
1088 | * | |
1089 | * From SBC-5 r05 (https://www.t10.org/cgi-bin/ac.pl?t=f&f=sbc5r05.pdf): | |
1090 | * 0: no relative lifetime. | |
1091 | * 1: shortest relative lifetime. | |
1092 | * 2: second shortest relative lifetime. | |
1093 | * 3 - 0x3d: intermediate relative lifetimes. | |
1094 | * 0x3e: second longest relative lifetime. | |
1095 | * 0x3f: longest relative lifetime. | |
1096 | */ | |
1097 | static u8 sd_group_number(struct scsi_cmnd *cmd) | |
1098 | { | |
1099 | const struct request *rq = scsi_cmd_to_rq(cmd); | |
1100 | struct scsi_disk *sdkp = scsi_disk(rq->q->disk); | |
1101 | ||
1102 | if (!sdkp->rscs) | |
1103 | return 0; | |
1104 | ||
1105 | return min3((u32)rq->write_hint, (u32)sdkp->permanent_stream_count, | |
1106 | 0x3fu); | |
1107 | } | |
1108 | ||
78a02f49 MP |
1109 | static blk_status_t sd_setup_rw32_cmnd(struct scsi_cmnd *cmd, bool write, |
1110 | sector_t lba, unsigned int nr_blocks, | |
e59e80cf | 1111 | unsigned char flags, unsigned int dld) |
1da177e4 | 1112 | { |
78a02f49 | 1113 | cmd->cmd_len = SD_EXT_CDB_SIZE; |
78a02f49 | 1114 | cmd->cmnd[0] = VARIABLE_LENGTH_CMD; |
4f53138f | 1115 | cmd->cmnd[6] = sd_group_number(cmd); |
78a02f49 MP |
1116 | cmd->cmnd[7] = 0x18; /* Additional CDB len */ |
1117 | cmd->cmnd[9] = write ? WRITE_32 : READ_32; | |
1118 | cmd->cmnd[10] = flags; | |
e59e80cf | 1119 | cmd->cmnd[11] = dld & 0x07; |
78a02f49 MP |
1120 | put_unaligned_be64(lba, &cmd->cmnd[12]); |
1121 | put_unaligned_be32(lba, &cmd->cmnd[20]); /* Expected Indirect LBA */ | |
1122 | put_unaligned_be32(nr_blocks, &cmd->cmnd[28]); | |
1123 | ||
1124 | return BLK_STS_OK; | |
1125 | } | |
1126 | ||
1127 | static blk_status_t sd_setup_rw16_cmnd(struct scsi_cmnd *cmd, bool write, | |
1128 | sector_t lba, unsigned int nr_blocks, | |
e59e80cf | 1129 | unsigned char flags, unsigned int dld) |
78a02f49 MP |
1130 | { |
1131 | cmd->cmd_len = 16; | |
1132 | cmd->cmnd[0] = write ? WRITE_16 : READ_16; | |
e59e80cf | 1133 | cmd->cmnd[1] = flags | ((dld >> 2) & 0x01); |
4f53138f | 1134 | cmd->cmnd[14] = ((dld & 0x03) << 6) | sd_group_number(cmd); |
78a02f49 MP |
1135 | cmd->cmnd[15] = 0; |
1136 | put_unaligned_be64(lba, &cmd->cmnd[2]); | |
1137 | put_unaligned_be32(nr_blocks, &cmd->cmnd[10]); | |
1138 | ||
1139 | return BLK_STS_OK; | |
1140 | } | |
1141 | ||
1142 | static blk_status_t sd_setup_rw10_cmnd(struct scsi_cmnd *cmd, bool write, | |
1143 | sector_t lba, unsigned int nr_blocks, | |
1144 | unsigned char flags) | |
1145 | { | |
1146 | cmd->cmd_len = 10; | |
1147 | cmd->cmnd[0] = write ? WRITE_10 : READ_10; | |
1148 | cmd->cmnd[1] = flags; | |
4f53138f | 1149 | cmd->cmnd[6] = sd_group_number(cmd); |
78a02f49 MP |
1150 | cmd->cmnd[9] = 0; |
1151 | put_unaligned_be32(lba, &cmd->cmnd[2]); | |
1152 | put_unaligned_be16(nr_blocks, &cmd->cmnd[7]); | |
1153 | ||
1154 | return BLK_STS_OK; | |
1155 | } | |
1156 | ||
1157 | static blk_status_t sd_setup_rw6_cmnd(struct scsi_cmnd *cmd, bool write, | |
1158 | sector_t lba, unsigned int nr_blocks, | |
1159 | unsigned char flags) | |
1160 | { | |
db5db4b9 BVA |
1161 | /* Avoid that 0 blocks gets translated into 256 blocks. */ |
1162 | if (WARN_ON_ONCE(nr_blocks == 0)) | |
1163 | return BLK_STS_IOERR; | |
1164 | ||
78a02f49 MP |
1165 | if (unlikely(flags & 0x8)) { |
1166 | /* | |
1167 | * This happens only if this drive failed 10byte rw | |
1168 | * command with ILLEGAL_REQUEST during operation and | |
1169 | * thus turned off use_10_for_rw. | |
1170 | */ | |
1171 | scmd_printk(KERN_ERR, cmd, "FUA write on READ/WRITE(6) drive\n"); | |
1172 | return BLK_STS_IOERR; | |
1173 | } | |
1174 | ||
1175 | cmd->cmd_len = 6; | |
1176 | cmd->cmnd[0] = write ? WRITE_6 : READ_6; | |
1177 | cmd->cmnd[1] = (lba >> 16) & 0x1f; | |
1178 | cmd->cmnd[2] = (lba >> 8) & 0xff; | |
1179 | cmd->cmnd[3] = lba & 0xff; | |
1180 | cmd->cmnd[4] = nr_blocks; | |
1181 | cmd->cmnd[5] = 0; | |
1182 | ||
1183 | return BLK_STS_OK; | |
1184 | } | |
1185 | ||
e59e80cf DLM |
1186 | /* |
1187 | * Check if a command has a duration limit set. If it does, and the target | |
1188 | * device supports CDL and the feature is enabled, return the limit | |
1189 | * descriptor index to use. Return 0 (no limit) otherwise. | |
1190 | */ | |
1191 | static int sd_cdl_dld(struct scsi_disk *sdkp, struct scsi_cmnd *scmd) | |
1192 | { | |
1193 | struct scsi_device *sdp = sdkp->device; | |
1194 | int hint; | |
1195 | ||
1196 | if (!sdp->cdl_supported || !sdp->cdl_enable) | |
1197 | return 0; | |
1198 | ||
1199 | /* | |
1200 | * Use "no limit" if the request ioprio does not specify a duration | |
1201 | * limit hint. | |
1202 | */ | |
1203 | hint = IOPRIO_PRIO_HINT(req_get_ioprio(scsi_cmd_to_rq(scmd))); | |
1204 | if (hint < IOPRIO_HINT_DEV_DURATION_LIMIT_1 || | |
1205 | hint > IOPRIO_HINT_DEV_DURATION_LIMIT_7) | |
1206 | return 0; | |
1207 | ||
1208 | return (hint - IOPRIO_HINT_DEV_DURATION_LIMIT_1) + 1; | |
1209 | } | |
1210 | ||
cf64e5a5 | 1211 | static blk_status_t sd_setup_read_write_cmnd(struct scsi_cmnd *cmd) |
1da177e4 | 1212 | { |
5999ccff | 1213 | struct request *rq = scsi_cmd_to_rq(cmd); |
cf64e5a5 | 1214 | struct scsi_device *sdp = cmd->device; |
f3fa33ac | 1215 | struct scsi_disk *sdkp = scsi_disk(rq->q->disk); |
ec029758 | 1216 | sector_t lba = sectors_to_logical(sdp, blk_rq_pos(rq)); |
18351070 | 1217 | sector_t threshold; |
ec029758 | 1218 | unsigned int nr_blocks = sectors_to_logical(sdp, blk_rq_sectors(rq)); |
ec029758 | 1219 | unsigned int mask = logical_to_sectors(sdp, 1) - 1; |
78a02f49 MP |
1220 | bool write = rq_data_dir(rq) == WRITE; |
1221 | unsigned char protect, fua; | |
e59e80cf | 1222 | unsigned int dld; |
159b2cbf | 1223 | blk_status_t ret; |
0cf9f4e5 XC |
1224 | unsigned int dif; |
1225 | bool dix; | |
7f9a6bc4 | 1226 | |
7007e9dd | 1227 | ret = scsi_alloc_sgtables(cmd); |
159b2cbf | 1228 | if (ret != BLK_STS_OK) |
39051dd8 | 1229 | return ret; |
7f9a6bc4 | 1230 | |
7007e9dd | 1231 | ret = BLK_STS_IOERR; |
e249e42d | 1232 | if (!scsi_device_online(sdp) || sdp->changed) { |
cf64e5a5 | 1233 | scmd_printk(KERN_ERR, cmd, "device offline or changed\n"); |
7007e9dd | 1234 | goto fail; |
1da177e4 LT |
1235 | } |
1236 | ||
f3fa33ac | 1237 | if (blk_rq_pos(rq) + blk_rq_sectors(rq) > get_capacity(rq->q->disk)) { |
cf64e5a5 | 1238 | scmd_printk(KERN_ERR, cmd, "access beyond end of device\n"); |
7007e9dd | 1239 | goto fail; |
e249e42d MP |
1240 | } |
1241 | ||
1242 | if ((blk_rq_pos(rq) & mask) || (blk_rq_sectors(rq) & mask)) { | |
cf64e5a5 | 1243 | scmd_printk(KERN_ERR, cmd, "request not aligned to the logical block size\n"); |
7007e9dd | 1244 | goto fail; |
1da177e4 | 1245 | } |
7f9a6bc4 | 1246 | |
a0899d4d | 1247 | /* |
ec029758 MP |
1248 | * Some SD card readers can't handle accesses which touch the |
1249 | * last one or two logical blocks. Split accesses as needed. | |
a0899d4d | 1250 | */ |
ec029758 | 1251 | threshold = sdkp->capacity - SD_LAST_BUGGY_SECTORS; |
18351070 | 1252 | |
c6c93fdd MP |
1253 | if (unlikely(sdp->last_sector_bug && lba + nr_blocks > threshold)) { |
1254 | if (lba < threshold) { | |
18351070 | 1255 | /* Access up to the threshold but not beyond */ |
c6c93fdd | 1256 | nr_blocks = threshold - lba; |
18351070 | 1257 | } else { |
ec029758 MP |
1258 | /* Access only a single logical block */ |
1259 | nr_blocks = 1; | |
18351070 LT |
1260 | } |
1261 | } | |
a0899d4d | 1262 | |
5795eb44 JT |
1263 | if (req_op(rq) == REQ_OP_ZONE_APPEND) { |
1264 | ret = sd_zbc_prepare_zone_append(cmd, &lba, nr_blocks); | |
1265 | if (ret) | |
7007e9dd | 1266 | goto fail; |
5795eb44 JT |
1267 | } |
1268 | ||
78a02f49 | 1269 | fua = rq->cmd_flags & REQ_FUA ? 0x8 : 0; |
cf64e5a5 BVA |
1270 | dix = scsi_prot_sg_count(cmd); |
1271 | dif = scsi_host_dif_capable(cmd->device->host, sdkp->protection_type); | |
e59e80cf | 1272 | dld = sd_cdl_dld(sdkp, cmd); |
1da177e4 | 1273 | |
c611529e | 1274 | if (dif || dix) |
cf64e5a5 | 1275 | protect = sd_setup_protect_cmnd(cmd, dix, dif); |
af55ff67 | 1276 | else |
4e7392ec MP |
1277 | protect = 0; |
1278 | ||
8475c811 | 1279 | if (protect && sdkp->protection_type == T10_PI_TYPE2_PROTECTION) { |
cf64e5a5 | 1280 | ret = sd_setup_rw32_cmnd(cmd, write, lba, nr_blocks, |
e59e80cf | 1281 | protect | fua, dld); |
c6c93fdd | 1282 | } else if (sdp->use_16_for_rw || (nr_blocks > 0xffff)) { |
cf64e5a5 | 1283 | ret = sd_setup_rw16_cmnd(cmd, write, lba, nr_blocks, |
e59e80cf | 1284 | protect | fua, dld); |
c6c93fdd | 1285 | } else if ((nr_blocks > 0xff) || (lba > 0x1fffff) || |
4f53138f | 1286 | sdp->use_10_for_rw || protect || rq->write_hint) { |
cf64e5a5 | 1287 | ret = sd_setup_rw10_cmnd(cmd, write, lba, nr_blocks, |
78a02f49 | 1288 | protect | fua); |
1da177e4 | 1289 | } else { |
cf64e5a5 | 1290 | ret = sd_setup_rw6_cmnd(cmd, write, lba, nr_blocks, |
78a02f49 | 1291 | protect | fua); |
1da177e4 | 1292 | } |
78a02f49 MP |
1293 | |
1294 | if (unlikely(ret != BLK_STS_OK)) | |
7007e9dd | 1295 | goto fail; |
1da177e4 LT |
1296 | |
1297 | /* | |
1298 | * We shouldn't disconnect in the middle of a sector, so with a dumb | |
1299 | * host adapter, it's safe to assume that we can at least transfer | |
1300 | * this many bytes between each connect / disconnect. | |
1301 | */ | |
cf64e5a5 BVA |
1302 | cmd->transfersize = sdp->sector_size; |
1303 | cmd->underflow = nr_blocks << 9; | |
0610959f | 1304 | cmd->allowed = sdkp->max_retries; |
cf64e5a5 | 1305 | cmd->sdb.length = nr_blocks * sdp->sector_size; |
e249e42d MP |
1306 | |
1307 | SCSI_LOG_HLQUEUE(1, | |
cf64e5a5 | 1308 | scmd_printk(KERN_INFO, cmd, |
e249e42d MP |
1309 | "%s: block=%llu, count=%d\n", __func__, |
1310 | (unsigned long long)blk_rq_pos(rq), | |
1311 | blk_rq_sectors(rq))); | |
1312 | SCSI_LOG_HLQUEUE(2, | |
cf64e5a5 | 1313 | scmd_printk(KERN_INFO, cmd, |
e249e42d MP |
1314 | "%s %d/%u 512 byte blocks.\n", |
1315 | write ? "writing" : "reading", nr_blocks, | |
1316 | blk_rq_sectors(rq))); | |
1da177e4 | 1317 | |
1da177e4 | 1318 | /* |
7007e9dd | 1319 | * This indicates that the command is ready from our end to be queued. |
1da177e4 | 1320 | */ |
159b2cbf | 1321 | return BLK_STS_OK; |
7007e9dd CH |
1322 | fail: |
1323 | scsi_free_sgtables(cmd); | |
1324 | return ret; | |
1da177e4 LT |
1325 | } |
1326 | ||
159b2cbf | 1327 | static blk_status_t sd_init_command(struct scsi_cmnd *cmd) |
87949eee | 1328 | { |
5999ccff | 1329 | struct request *rq = scsi_cmd_to_rq(cmd); |
87949eee | 1330 | |
c2df40df MC |
1331 | switch (req_op(rq)) { |
1332 | case REQ_OP_DISCARD: | |
f3fa33ac | 1333 | switch (scsi_disk(rq->q->disk)->provisioning_mode) { |
81d926e8 CH |
1334 | case SD_LBP_UNMAP: |
1335 | return sd_setup_unmap_cmnd(cmd); | |
1336 | case SD_LBP_WS16: | |
02d26103 | 1337 | return sd_setup_write_same16_cmnd(cmd, true); |
81d926e8 CH |
1338 | case SD_LBP_WS10: |
1339 | return sd_setup_write_same10_cmnd(cmd, true); | |
1340 | case SD_LBP_ZERO: | |
1341 | return sd_setup_write_same10_cmnd(cmd, false); | |
1342 | default: | |
159b2cbf | 1343 | return BLK_STS_TARGET; |
81d926e8 | 1344 | } |
02d26103 CH |
1345 | case REQ_OP_WRITE_ZEROES: |
1346 | return sd_setup_write_zeroes_cmnd(cmd); | |
3a5e02ce | 1347 | case REQ_OP_FLUSH: |
87949eee | 1348 | return sd_setup_flush_cmnd(cmd); |
c2df40df MC |
1349 | case REQ_OP_READ: |
1350 | case REQ_OP_WRITE: | |
5795eb44 | 1351 | case REQ_OP_ZONE_APPEND: |
87949eee | 1352 | return sd_setup_read_write_cmnd(cmd); |
89d94756 | 1353 | case REQ_OP_ZONE_RESET: |
ad512f20 AJ |
1354 | return sd_zbc_setup_zone_mgmt_cmnd(cmd, ZO_RESET_WRITE_POINTER, |
1355 | false); | |
d81e9d49 | 1356 | case REQ_OP_ZONE_RESET_ALL: |
ad512f20 AJ |
1357 | return sd_zbc_setup_zone_mgmt_cmnd(cmd, ZO_RESET_WRITE_POINTER, |
1358 | true); | |
1359 | case REQ_OP_ZONE_OPEN: | |
1360 | return sd_zbc_setup_zone_mgmt_cmnd(cmd, ZO_OPEN_ZONE, false); | |
1361 | case REQ_OP_ZONE_CLOSE: | |
1362 | return sd_zbc_setup_zone_mgmt_cmnd(cmd, ZO_CLOSE_ZONE, false); | |
1363 | case REQ_OP_ZONE_FINISH: | |
1364 | return sd_zbc_setup_zone_mgmt_cmnd(cmd, ZO_FINISH_ZONE, false); | |
c2df40df | 1365 | default: |
f1f1fada | 1366 | WARN_ON_ONCE(1); |
159b2cbf | 1367 | return BLK_STS_NOTSUPP; |
c2df40df | 1368 | } |
87949eee CH |
1369 | } |
1370 | ||
1371 | static void sd_uninit_command(struct scsi_cmnd *SCpnt) | |
1372 | { | |
5999ccff | 1373 | struct request *rq = scsi_cmd_to_rq(SCpnt); |
87949eee | 1374 | |
f9d03f96 | 1375 | if (rq->rq_flags & RQF_SPECIAL_PAYLOAD) |
61cce6f6 | 1376 | mempool_free(rq->special_vec.bv_page, sd_page_pool); |
87949eee CH |
1377 | } |
1378 | ||
444aa2c5 | 1379 | static bool sd_need_revalidate(struct gendisk *disk, struct scsi_disk *sdkp) |
d1b7f920 CH |
1380 | { |
1381 | if (sdkp->device->removable || sdkp->write_prot) { | |
444aa2c5 | 1382 | if (disk_check_media_change(disk)) |
d1b7f920 CH |
1383 | return true; |
1384 | } | |
1385 | ||
1386 | /* | |
1387 | * Force a full rescan after ioctl(BLKRRPART). While the disk state has | |
1388 | * nothing to do with partitions, BLKRRPART is used to force a full | |
1389 | * revalidate after things like a format for historical reasons. | |
1390 | */ | |
444aa2c5 | 1391 | return test_bit(GD_NEED_PART_SCAN, &disk->state); |
d1b7f920 CH |
1392 | } |
1393 | ||
1da177e4 LT |
1394 | /** |
1395 | * sd_open - open a scsi disk device | |
d32e2bf8 | 1396 | * @disk: disk to open |
05bdb996 | 1397 | * @mode: open mode |
1da177e4 LT |
1398 | * |
1399 | * Returns 0 if successful. Returns a negated errno value in case | |
1400 | * of error. | |
1401 | * | |
1402 | * Note: This can be called from a user context (e.g. fsck(1) ) | |
1403 | * or from within the kernel (e.g. as a result of a mount(1) ). | |
1404 | * In the latter case @inode and @filp carry an abridged amount | |
1405 | * of information as noted above. | |
409f3499 | 1406 | * |
d32e2bf8 | 1407 | * Locking: called with disk->open_mutex held. |
1da177e4 | 1408 | **/ |
05bdb996 | 1409 | static int sd_open(struct gendisk *disk, blk_mode_t mode) |
1da177e4 | 1410 | { |
d32e2bf8 | 1411 | struct scsi_disk *sdkp = scsi_disk(disk); |
9c63f7f6 | 1412 | struct scsi_device *sdev = sdkp->device; |
1da177e4 LT |
1413 | int retval; |
1414 | ||
9c63f7f6 | 1415 | if (scsi_device_get(sdev)) |
1da177e4 LT |
1416 | return -ENXIO; |
1417 | ||
fa0d34be | 1418 | SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp, "sd_open\n")); |
1da177e4 | 1419 | |
1da177e4 LT |
1420 | /* |
1421 | * If the device is in error recovery, wait until it is done. | |
1422 | * If the device is offline, then disallow any access to it. | |
1423 | */ | |
1424 | retval = -ENXIO; | |
1425 | if (!scsi_block_when_processing_errors(sdev)) | |
1426 | goto error_out; | |
1427 | ||
d32e2bf8 CH |
1428 | if (sd_need_revalidate(disk, sdkp)) |
1429 | sd_revalidate_disk(disk); | |
1da177e4 LT |
1430 | |
1431 | /* | |
1432 | * If the drive is empty, just let the open fail. | |
1433 | */ | |
1434 | retval = -ENOMEDIUM; | |
05bdb996 CH |
1435 | if (sdev->removable && !sdkp->media_present && |
1436 | !(mode & BLK_OPEN_NDELAY)) | |
1da177e4 LT |
1437 | goto error_out; |
1438 | ||
1439 | /* | |
1440 | * If the device has the write protect tab set, have the open fail | |
1441 | * if the user expects to be able to write to the thing. | |
1442 | */ | |
1443 | retval = -EROFS; | |
05bdb996 | 1444 | if (sdkp->write_prot && (mode & BLK_OPEN_WRITE)) |
1da177e4 LT |
1445 | goto error_out; |
1446 | ||
1447 | /* | |
1448 | * It is possible that the disk changing stuff resulted in | |
1449 | * the device being taken offline. If this is the case, | |
1450 | * report this to the user, and don't pretend that the | |
1451 | * open actually succeeded. | |
1452 | */ | |
1453 | retval = -ENXIO; | |
1454 | if (!scsi_device_online(sdev)) | |
1455 | goto error_out; | |
1456 | ||
409f3499 | 1457 | if ((atomic_inc_return(&sdkp->openers) == 1) && sdev->removable) { |
1da177e4 LT |
1458 | if (scsi_block_when_processing_errors(sdev)) |
1459 | scsi_set_medium_removal(sdev, SCSI_REMOVAL_PREVENT); | |
1460 | } | |
1461 | ||
1462 | return 0; | |
1463 | ||
1464 | error_out: | |
9c63f7f6 | 1465 | scsi_device_put(sdev); |
1da177e4 LT |
1466 | return retval; |
1467 | } | |
1468 | ||
1469 | /** | |
1470 | * sd_release - invoked when the (last) close(2) is called on this | |
1471 | * scsi disk. | |
7529fbb0 | 1472 | * @disk: disk to release |
1da177e4 LT |
1473 | * |
1474 | * Returns 0. | |
1475 | * | |
1476 | * Note: may block (uninterruptible) if error recovery is underway | |
1477 | * on this disk. | |
409f3499 | 1478 | * |
05bdb996 | 1479 | * Locking: called with disk->open_mutex held. |
1da177e4 | 1480 | **/ |
ae220766 | 1481 | static void sd_release(struct gendisk *disk) |
1da177e4 | 1482 | { |
1da177e4 LT |
1483 | struct scsi_disk *sdkp = scsi_disk(disk); |
1484 | struct scsi_device *sdev = sdkp->device; | |
1485 | ||
56937f7b | 1486 | SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp, "sd_release\n")); |
1da177e4 | 1487 | |
7e443312 | 1488 | if (atomic_dec_return(&sdkp->openers) == 0 && sdev->removable) { |
1da177e4 LT |
1489 | if (scsi_block_when_processing_errors(sdev)) |
1490 | scsi_set_medium_removal(sdev, SCSI_REMOVAL_ALLOW); | |
1491 | } | |
1492 | ||
9c63f7f6 | 1493 | scsi_device_put(sdev); |
1da177e4 LT |
1494 | } |
1495 | ||
a885c8c4 | 1496 | static int sd_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1da177e4 LT |
1497 | { |
1498 | struct scsi_disk *sdkp = scsi_disk(bdev->bd_disk); | |
1499 | struct scsi_device *sdp = sdkp->device; | |
1500 | struct Scsi_Host *host = sdp->host; | |
f08bb1e0 | 1501 | sector_t capacity = logical_to_sectors(sdp, sdkp->capacity); |
1da177e4 LT |
1502 | int diskinfo[4]; |
1503 | ||
1504 | /* default to most commonly used values */ | |
f08bb1e0 MP |
1505 | diskinfo[0] = 0x40; /* 1 << 6 */ |
1506 | diskinfo[1] = 0x20; /* 1 << 5 */ | |
1507 | diskinfo[2] = capacity >> 11; | |
1508 | ||
1da177e4 LT |
1509 | /* override with calculated, extended default, or driver values */ |
1510 | if (host->hostt->bios_param) | |
f08bb1e0 | 1511 | host->hostt->bios_param(sdp, bdev, capacity, diskinfo); |
1da177e4 | 1512 | else |
f08bb1e0 | 1513 | scsicam_bios_param(bdev, capacity, diskinfo); |
1da177e4 | 1514 | |
a885c8c4 CH |
1515 | geo->heads = diskinfo[0]; |
1516 | geo->sectors = diskinfo[1]; | |
1517 | geo->cylinders = diskinfo[2]; | |
1da177e4 LT |
1518 | return 0; |
1519 | } | |
1520 | ||
1521 | /** | |
44328310 | 1522 | * sd_ioctl - process an ioctl |
7529fbb0 | 1523 | * @bdev: target block device |
05bdb996 | 1524 | * @mode: open mode |
1da177e4 | 1525 | * @cmd: ioctl command number |
44328310 | 1526 | * @arg: this is third argument given to ioctl(2) system call. |
1da177e4 LT |
1527 | * Often contains a pointer. |
1528 | * | |
25985edc | 1529 | * Returns 0 if successful (some ioctls return positive numbers on |
1da177e4 LT |
1530 | * success as well). Returns a negated errno value in case of error. |
1531 | * | |
1532 | * Note: most ioctls are forward onto the block subsystem or further | |
3a4fa0a2 | 1533 | * down in the scsi subsystem. |
1da177e4 | 1534 | **/ |
05bdb996 | 1535 | static int sd_ioctl(struct block_device *bdev, blk_mode_t mode, |
44328310 | 1536 | unsigned int cmd, unsigned long arg) |
1da177e4 | 1537 | { |
1da177e4 | 1538 | struct gendisk *disk = bdev->bd_disk; |
fe2d1851 NN |
1539 | struct scsi_disk *sdkp = scsi_disk(disk); |
1540 | struct scsi_device *sdp = sdkp->device; | |
44328310 | 1541 | void __user *p = (void __user *)arg; |
1da177e4 LT |
1542 | int error; |
1543 | ||
fe2d1851 NN |
1544 | SCSI_LOG_IOCTL(1, sd_printk(KERN_INFO, sdkp, "sd_ioctl: disk=%s, " |
1545 | "cmd=0x%x\n", disk->disk_name, cmd)); | |
1da177e4 | 1546 | |
4f07bfc5 CH |
1547 | if (bdev_is_partition(bdev) && !capable(CAP_SYS_RAWIO)) |
1548 | return -ENOIOCTLCMD; | |
0bfc96cb | 1549 | |
1da177e4 LT |
1550 | /* |
1551 | * If we are in the middle of error recovery, don't let anyone | |
1552 | * else try and use this device. Also, if error recovery fails, it | |
1553 | * may try and take the device offline, in which case all further | |
1554 | * access to the device is prohibited. | |
1555 | */ | |
906d15fb | 1556 | error = scsi_ioctl_block_when_processing_errors(sdp, cmd, |
05bdb996 | 1557 | (mode & BLK_OPEN_NDELAY)); |
906d15fb | 1558 | if (error) |
44328310 | 1559 | return error; |
1da177e4 | 1560 | |
d80210f2 CH |
1561 | if (is_sed_ioctl(cmd)) |
1562 | return sed_ioctl(sdkp->opal_dev, cmd, p); | |
05bdb996 | 1563 | return scsi_ioctl(sdp, mode & BLK_OPEN_WRITE, cmd, p); |
1da177e4 LT |
1564 | } |
1565 | ||
1566 | static void set_media_not_present(struct scsi_disk *sdkp) | |
1567 | { | |
2bae0093 TH |
1568 | if (sdkp->media_present) |
1569 | sdkp->device->changed = 1; | |
1570 | ||
1571 | if (sdkp->device->removable) { | |
1572 | sdkp->media_present = 0; | |
1573 | sdkp->capacity = 0; | |
1574 | } | |
1575 | } | |
1576 | ||
1577 | static int media_not_present(struct scsi_disk *sdkp, | |
1578 | struct scsi_sense_hdr *sshdr) | |
1579 | { | |
1580 | if (!scsi_sense_valid(sshdr)) | |
1581 | return 0; | |
1582 | ||
1583 | /* not invoked for commands that could return deferred errors */ | |
1584 | switch (sshdr->sense_key) { | |
1585 | case UNIT_ATTENTION: | |
1586 | case NOT_READY: | |
1587 | /* medium not present */ | |
1588 | if (sshdr->asc == 0x3A) { | |
1589 | set_media_not_present(sdkp); | |
1590 | return 1; | |
1591 | } | |
1592 | } | |
1593 | return 0; | |
1da177e4 LT |
1594 | } |
1595 | ||
1596 | /** | |
2bae0093 TH |
1597 | * sd_check_events - check media events |
1598 | * @disk: kernel device descriptor | |
1599 | * @clearing: disk events currently being cleared | |
1da177e4 | 1600 | * |
2bae0093 | 1601 | * Returns mask of DISK_EVENT_*. |
1da177e4 LT |
1602 | * |
1603 | * Note: this function is invoked from the block subsystem. | |
1604 | **/ | |
2bae0093 | 1605 | static unsigned int sd_check_events(struct gendisk *disk, unsigned int clearing) |
1da177e4 | 1606 | { |
9c63f7f6 | 1607 | struct scsi_disk *sdkp = disk->private_data; |
eb72d0bb | 1608 | struct scsi_device *sdp; |
1da177e4 | 1609 | int retval; |
41e70e30 | 1610 | bool disk_changed; |
1da177e4 | 1611 | |
eb72d0bb HR |
1612 | if (!sdkp) |
1613 | return 0; | |
1614 | ||
1615 | sdp = sdkp->device; | |
2bae0093 | 1616 | SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp, "sd_check_events\n")); |
1da177e4 LT |
1617 | |
1618 | /* | |
1619 | * If the device is offline, don't send any commands - just pretend as | |
1620 | * if the command failed. If the device ever comes back online, we | |
1621 | * can deal with it then. It is only because of unrecoverable errors | |
1622 | * that we would ever take a device offline in the first place. | |
1623 | */ | |
285e9670 KS |
1624 | if (!scsi_device_online(sdp)) { |
1625 | set_media_not_present(sdkp); | |
285e9670 KS |
1626 | goto out; |
1627 | } | |
1da177e4 LT |
1628 | |
1629 | /* | |
1630 | * Using TEST_UNIT_READY enables differentiation between drive with | |
1631 | * no cartridge loaded - NOT READY, drive with changed cartridge - | |
1632 | * UNIT ATTENTION, or with same cartridge - GOOD STATUS. | |
1633 | * | |
1634 | * Drives that auto spin down. eg iomega jaz 1G, will be started | |
1635 | * by sd_spinup_disk() from sd_revalidate_disk(), which happens whenever | |
1636 | * sd_revalidate() is called. | |
1637 | */ | |
001aac25 | 1638 | if (scsi_block_when_processing_errors(sdp)) { |
6fa2b8f9 CH |
1639 | struct scsi_sense_hdr sshdr = { 0, }; |
1640 | ||
0610959f | 1641 | retval = scsi_test_unit_ready(sdp, SD_TIMEOUT, sdkp->max_retries, |
6fa2b8f9 | 1642 | &sshdr); |
1da177e4 | 1643 | |
6fa2b8f9 | 1644 | /* failed to execute TUR, assume media not present */ |
ced202f7 | 1645 | if (retval < 0 || host_byte(retval)) { |
6fa2b8f9 CH |
1646 | set_media_not_present(sdkp); |
1647 | goto out; | |
1648 | } | |
1da177e4 | 1649 | |
6fa2b8f9 CH |
1650 | if (media_not_present(sdkp, &sshdr)) |
1651 | goto out; | |
1652 | } | |
2bae0093 | 1653 | |
1da177e4 LT |
1654 | /* |
1655 | * For removable scsi disk we have to recognise the presence | |
2bae0093 | 1656 | * of a disk in the drive. |
1da177e4 | 1657 | */ |
2bae0093 TH |
1658 | if (!sdkp->media_present) |
1659 | sdp->changed = 1; | |
1da177e4 | 1660 | sdkp->media_present = 1; |
285e9670 | 1661 | out: |
3ff5588d | 1662 | /* |
2bae0093 | 1663 | * sdp->changed is set under the following conditions: |
3ff5588d | 1664 | * |
2bae0093 TH |
1665 | * Medium present state has changed in either direction. |
1666 | * Device has indicated UNIT_ATTENTION. | |
3ff5588d | 1667 | */ |
41e70e30 | 1668 | disk_changed = sdp->changed; |
2bae0093 | 1669 | sdp->changed = 0; |
41e70e30 | 1670 | return disk_changed ? DISK_EVENT_MEDIA_CHANGE : 0; |
1da177e4 LT |
1671 | } |
1672 | ||
3b834863 | 1673 | static int sd_sync_cache(struct scsi_disk *sdkp) |
1da177e4 | 1674 | { |
18305320 | 1675 | int res; |
e73aec82 | 1676 | struct scsi_device *sdp = sdkp->device; |
7e660100 JB |
1677 | const int timeout = sdp->request_queue->rq_timeout |
1678 | * SD_FLUSH_TIMEOUT_MULTIPLIER; | |
18305320 MC |
1679 | /* Leave the rest of the command zero to indicate flush everything. */ |
1680 | const unsigned char cmd[16] = { sdp->use_16_for_sync ? | |
1681 | SYNCHRONIZE_CACHE_16 : SYNCHRONIZE_CACHE }; | |
3b834863 | 1682 | struct scsi_sense_hdr sshdr; |
18305320 MC |
1683 | struct scsi_failure failure_defs[] = { |
1684 | { | |
1685 | .allowed = 3, | |
1686 | .result = SCMD_FAILURE_RESULT_ANY, | |
1687 | }, | |
1688 | {} | |
1689 | }; | |
1690 | struct scsi_failures failures = { | |
1691 | .failure_definitions = failure_defs, | |
1692 | }; | |
af16cd63 MC |
1693 | const struct scsi_exec_args exec_args = { |
1694 | .req_flags = BLK_MQ_REQ_PM, | |
3b834863 | 1695 | .sshdr = &sshdr, |
18305320 | 1696 | .failures = &failures, |
af16cd63 | 1697 | }; |
1da177e4 LT |
1698 | |
1699 | if (!scsi_device_online(sdp)) | |
1700 | return -ENODEV; | |
1701 | ||
18305320 MC |
1702 | res = scsi_execute_cmd(sdp, cmd, REQ_OP_DRV_IN, NULL, 0, timeout, |
1703 | sdkp->max_retries, &exec_args); | |
e73aec82 | 1704 | if (res) { |
ef61329d | 1705 | sd_print_result(sdkp, "Synchronize Cache(10) failed", res); |
95897910 | 1706 | |
ced202f7 HR |
1707 | if (res < 0) |
1708 | return res; | |
1709 | ||
464a00c9 | 1710 | if (scsi_status_is_check_condition(res) && |
3b834863 MC |
1711 | scsi_sense_valid(&sshdr)) { |
1712 | sd_print_sense_hdr(sdkp, &sshdr); | |
4fa83244 | 1713 | |
464a00c9 | 1714 | /* we need to evaluate the error return */ |
3b834863 MC |
1715 | if (sshdr.asc == 0x3a || /* medium not present */ |
1716 | sshdr.asc == 0x20 || /* invalid command */ | |
1717 | (sshdr.asc == 0x74 && sshdr.ascq == 0x71)) /* drive is password locked */ | |
95897910 ON |
1718 | /* this is no error here */ |
1719 | return 0; | |
3b834863 MC |
1720 | /* |
1721 | * This drive doesn't support sync and there's not much | |
1722 | * we can do because this is called during shutdown | |
1723 | * or suspend so just return success so those operations | |
1724 | * can proceed. | |
1725 | */ | |
1726 | if (sshdr.sense_key == ILLEGAL_REQUEST) | |
1727 | return 0; | |
464a00c9 | 1728 | } |
95897910 ON |
1729 | |
1730 | switch (host_byte(res)) { | |
1731 | /* ignore errors due to racing a disconnection */ | |
1732 | case DID_BAD_TARGET: | |
1733 | case DID_NO_CONNECT: | |
1734 | return 0; | |
1735 | /* signal the upper layer it might try again */ | |
1736 | case DID_BUS_BUSY: | |
1737 | case DID_IMM_RETRY: | |
1738 | case DID_REQUEUE: | |
1739 | case DID_SOFT_ERROR: | |
1740 | return -EBUSY; | |
1741 | default: | |
1742 | return -EIO; | |
1743 | } | |
1da177e4 | 1744 | } |
3721050a | 1745 | return 0; |
1da177e4 LT |
1746 | } |
1747 | ||
1da177e4 LT |
1748 | static void sd_rescan(struct device *dev) |
1749 | { | |
3d9a1f53 | 1750 | struct scsi_disk *sdkp = dev_get_drvdata(dev); |
39b7f1e2 | 1751 | |
b200e38c | 1752 | sd_revalidate_disk(sdkp->disk); |
1da177e4 LT |
1753 | } |
1754 | ||
b83ce214 CH |
1755 | static int sd_get_unique_id(struct gendisk *disk, u8 id[16], |
1756 | enum blk_unique_id type) | |
1757 | { | |
1758 | struct scsi_device *sdev = scsi_disk(disk)->device; | |
1759 | const struct scsi_vpd *vpd; | |
1760 | const unsigned char *d; | |
1761 | int ret = -ENXIO, len; | |
1762 | ||
1763 | rcu_read_lock(); | |
1764 | vpd = rcu_dereference(sdev->vpd_pg83); | |
1765 | if (!vpd) | |
1766 | goto out_unlock; | |
1767 | ||
1768 | ret = -EINVAL; | |
1769 | for (d = vpd->data + 4; d < vpd->data + vpd->len; d += d[3] + 4) { | |
1770 | /* we only care about designators with LU association */ | |
1771 | if (((d[1] >> 4) & 0x3) != 0x00) | |
1772 | continue; | |
1773 | if ((d[1] & 0xf) != type) | |
1774 | continue; | |
1775 | ||
1776 | /* | |
1777 | * Only exit early if a 16-byte descriptor was found. Otherwise | |
1778 | * keep looking as one with more entropy might still show up. | |
1779 | */ | |
1780 | len = d[3]; | |
1781 | if (len != 8 && len != 12 && len != 16) | |
1782 | continue; | |
1783 | ret = len; | |
1784 | memcpy(id, d + 4, len); | |
1785 | if (len == 16) | |
1786 | break; | |
1787 | } | |
1788 | out_unlock: | |
1789 | rcu_read_unlock(); | |
1790 | return ret; | |
1791 | } | |
1792 | ||
04b3c8c0 MC |
1793 | static int sd_scsi_to_pr_err(struct scsi_sense_hdr *sshdr, int result) |
1794 | { | |
1795 | switch (host_byte(result)) { | |
1796 | case DID_TRANSPORT_MARGINAL: | |
1797 | case DID_TRANSPORT_DISRUPTED: | |
1798 | case DID_BUS_BUSY: | |
1799 | return PR_STS_RETRY_PATH_FAILURE; | |
1800 | case DID_NO_CONNECT: | |
1801 | return PR_STS_PATH_FAILED; | |
1802 | case DID_TRANSPORT_FAILFAST: | |
1803 | return PR_STS_PATH_FAST_FAILED; | |
1804 | } | |
1805 | ||
1806 | switch (status_byte(result)) { | |
1807 | case SAM_STAT_RESERVATION_CONFLICT: | |
1808 | return PR_STS_RESERVATION_CONFLICT; | |
1809 | case SAM_STAT_CHECK_CONDITION: | |
1810 | if (!scsi_sense_valid(sshdr)) | |
1811 | return PR_STS_IOERR; | |
1812 | ||
1813 | if (sshdr->sense_key == ILLEGAL_REQUEST && | |
1814 | (sshdr->asc == 0x26 || sshdr->asc == 0x24)) | |
1815 | return -EINVAL; | |
1816 | ||
1817 | fallthrough; | |
1818 | default: | |
1819 | return PR_STS_IOERR; | |
1820 | } | |
1821 | } | |
1822 | ||
0af7b5e2 MC |
1823 | static int sd_pr_in_command(struct block_device *bdev, u8 sa, |
1824 | unsigned char *data, int data_len) | |
1825 | { | |
1826 | struct scsi_disk *sdkp = scsi_disk(bdev->bd_disk); | |
1827 | struct scsi_device *sdev = sdkp->device; | |
1828 | struct scsi_sense_hdr sshdr; | |
1829 | u8 cmd[10] = { PERSISTENT_RESERVE_IN, sa }; | |
eea6ef37 MC |
1830 | struct scsi_failure failure_defs[] = { |
1831 | { | |
1832 | .sense = UNIT_ATTENTION, | |
1833 | .asc = SCMD_FAILURE_ASC_ANY, | |
1834 | .ascq = SCMD_FAILURE_ASCQ_ANY, | |
1835 | .allowed = 5, | |
1836 | .result = SAM_STAT_CHECK_CONDITION, | |
1837 | }, | |
1838 | {} | |
1839 | }; | |
1840 | struct scsi_failures failures = { | |
1841 | .failure_definitions = failure_defs, | |
1842 | }; | |
0af7b5e2 MC |
1843 | const struct scsi_exec_args exec_args = { |
1844 | .sshdr = &sshdr, | |
eea6ef37 | 1845 | .failures = &failures, |
0af7b5e2 MC |
1846 | }; |
1847 | int result; | |
1848 | ||
1849 | put_unaligned_be16(data_len, &cmd[7]); | |
1850 | ||
1851 | result = scsi_execute_cmd(sdev, cmd, REQ_OP_DRV_IN, data, data_len, | |
1852 | SD_TIMEOUT, sdkp->max_retries, &exec_args); | |
1853 | if (scsi_status_is_check_condition(result) && | |
1854 | scsi_sense_valid(&sshdr)) { | |
1855 | sdev_printk(KERN_INFO, sdev, "PR command failed: %d\n", result); | |
1856 | scsi_print_sense_hdr(sdev, NULL, &sshdr); | |
1857 | } | |
1858 | ||
1859 | if (result <= 0) | |
1860 | return result; | |
1861 | ||
1862 | return sd_scsi_to_pr_err(&sshdr, result); | |
1863 | } | |
1864 | ||
1865 | static int sd_pr_read_keys(struct block_device *bdev, struct pr_keys *keys_info) | |
1866 | { | |
1867 | int result, i, data_offset, num_copy_keys; | |
1868 | u32 num_keys = keys_info->num_keys; | |
1869 | int data_len = num_keys * 8 + 8; | |
1870 | u8 *data; | |
1871 | ||
1872 | data = kzalloc(data_len, GFP_KERNEL); | |
1873 | if (!data) | |
1874 | return -ENOMEM; | |
1875 | ||
1876 | result = sd_pr_in_command(bdev, READ_KEYS, data, data_len); | |
1877 | if (result) | |
1878 | goto free_data; | |
1879 | ||
1880 | keys_info->generation = get_unaligned_be32(&data[0]); | |
1881 | keys_info->num_keys = get_unaligned_be32(&data[4]) / 8; | |
1882 | ||
1883 | data_offset = 8; | |
1884 | num_copy_keys = min(num_keys, keys_info->num_keys); | |
1885 | ||
1886 | for (i = 0; i < num_copy_keys; i++) { | |
1887 | keys_info->keys[i] = get_unaligned_be64(&data[data_offset]); | |
1888 | data_offset += 8; | |
1889 | } | |
1890 | ||
1891 | free_data: | |
1892 | kfree(data); | |
1893 | return result; | |
1894 | } | |
1895 | ||
1896 | static int sd_pr_read_reservation(struct block_device *bdev, | |
1897 | struct pr_held_reservation *rsv) | |
1898 | { | |
1899 | struct scsi_disk *sdkp = scsi_disk(bdev->bd_disk); | |
1900 | struct scsi_device *sdev = sdkp->device; | |
1901 | u8 data[24] = { }; | |
1902 | int result, len; | |
1903 | ||
1904 | result = sd_pr_in_command(bdev, READ_RESERVATION, data, sizeof(data)); | |
1905 | if (result) | |
1906 | return result; | |
1907 | ||
1908 | len = get_unaligned_be32(&data[4]); | |
1909 | if (!len) | |
1910 | return 0; | |
1911 | ||
1912 | /* Make sure we have at least the key and type */ | |
1913 | if (len < 14) { | |
1914 | sdev_printk(KERN_INFO, sdev, | |
1915 | "READ RESERVATION failed due to short return buffer of %d bytes\n", | |
1916 | len); | |
1917 | return -EINVAL; | |
1918 | } | |
1919 | ||
1920 | rsv->generation = get_unaligned_be32(&data[0]); | |
1921 | rsv->key = get_unaligned_be64(&data[8]); | |
1922 | rsv->type = scsi_pr_type_to_block(data[21] & 0x0f); | |
1923 | return 0; | |
1924 | } | |
1925 | ||
0730b163 MC |
1926 | static int sd_pr_out_command(struct block_device *bdev, u8 sa, u64 key, |
1927 | u64 sa_key, enum scsi_pr_type type, u8 flags) | |
924d55b0 | 1928 | { |
0610959f MC |
1929 | struct scsi_disk *sdkp = scsi_disk(bdev->bd_disk); |
1930 | struct scsi_device *sdev = sdkp->device; | |
924d55b0 | 1931 | struct scsi_sense_hdr sshdr; |
eea6ef37 MC |
1932 | struct scsi_failure failure_defs[] = { |
1933 | { | |
1934 | .sense = UNIT_ATTENTION, | |
1935 | .asc = SCMD_FAILURE_ASC_ANY, | |
1936 | .ascq = SCMD_FAILURE_ASCQ_ANY, | |
1937 | .allowed = 5, | |
1938 | .result = SAM_STAT_CHECK_CONDITION, | |
1939 | }, | |
1940 | {} | |
1941 | }; | |
1942 | struct scsi_failures failures = { | |
1943 | .failure_definitions = failure_defs, | |
1944 | }; | |
af16cd63 MC |
1945 | const struct scsi_exec_args exec_args = { |
1946 | .sshdr = &sshdr, | |
eea6ef37 | 1947 | .failures = &failures, |
af16cd63 | 1948 | }; |
924d55b0 CH |
1949 | int result; |
1950 | u8 cmd[16] = { 0, }; | |
1951 | u8 data[24] = { 0, }; | |
1952 | ||
1953 | cmd[0] = PERSISTENT_RESERVE_OUT; | |
1954 | cmd[1] = sa; | |
1955 | cmd[2] = type; | |
1956 | put_unaligned_be32(sizeof(data), &cmd[5]); | |
1957 | ||
1958 | put_unaligned_be64(key, &data[0]); | |
1959 | put_unaligned_be64(sa_key, &data[8]); | |
1960 | data[20] = flags; | |
1961 | ||
af16cd63 MC |
1962 | result = scsi_execute_cmd(sdev, cmd, REQ_OP_DRV_OUT, &data, |
1963 | sizeof(data), SD_TIMEOUT, sdkp->max_retries, | |
1964 | &exec_args); | |
924d55b0 | 1965 | |
464a00c9 | 1966 | if (scsi_status_is_check_condition(result) && |
c65be1a6 | 1967 | scsi_sense_valid(&sshdr)) { |
924d55b0 CH |
1968 | sdev_printk(KERN_INFO, sdev, "PR command failed: %d\n", result); |
1969 | scsi_print_sense_hdr(sdev, NULL, &sshdr); | |
1970 | } | |
1971 | ||
04b3c8c0 MC |
1972 | if (result <= 0) |
1973 | return result; | |
1974 | ||
1975 | return sd_scsi_to_pr_err(&sshdr, result); | |
924d55b0 CH |
1976 | } |
1977 | ||
1978 | static int sd_pr_register(struct block_device *bdev, u64 old_key, u64 new_key, | |
1979 | u32 flags) | |
1980 | { | |
1981 | if (flags & ~PR_FL_IGNORE_KEY) | |
1982 | return -EOPNOTSUPP; | |
20bebccb | 1983 | return sd_pr_out_command(bdev, (flags & PR_FL_IGNORE_KEY) ? 0x06 : 0x00, |
924d55b0 | 1984 | old_key, new_key, 0, |
01f90dd9 | 1985 | (1 << 0) /* APTPL */); |
924d55b0 CH |
1986 | } |
1987 | ||
1988 | static int sd_pr_reserve(struct block_device *bdev, u64 key, enum pr_type type, | |
1989 | u32 flags) | |
1990 | { | |
1991 | if (flags) | |
1992 | return -EOPNOTSUPP; | |
0730b163 MC |
1993 | return sd_pr_out_command(bdev, 0x01, key, 0, |
1994 | block_pr_type_to_scsi(type), 0); | |
924d55b0 CH |
1995 | } |
1996 | ||
1997 | static int sd_pr_release(struct block_device *bdev, u64 key, enum pr_type type) | |
1998 | { | |
0730b163 MC |
1999 | return sd_pr_out_command(bdev, 0x02, key, 0, |
2000 | block_pr_type_to_scsi(type), 0); | |
924d55b0 CH |
2001 | } |
2002 | ||
2003 | static int sd_pr_preempt(struct block_device *bdev, u64 old_key, u64 new_key, | |
2004 | enum pr_type type, bool abort) | |
2005 | { | |
20bebccb | 2006 | return sd_pr_out_command(bdev, abort ? 0x05 : 0x04, old_key, new_key, |
0730b163 | 2007 | block_pr_type_to_scsi(type), 0); |
924d55b0 CH |
2008 | } |
2009 | ||
2010 | static int sd_pr_clear(struct block_device *bdev, u64 key) | |
2011 | { | |
20bebccb | 2012 | return sd_pr_out_command(bdev, 0x03, key, 0, 0, 0); |
924d55b0 CH |
2013 | } |
2014 | ||
2015 | static const struct pr_ops sd_pr_ops = { | |
2016 | .pr_register = sd_pr_register, | |
2017 | .pr_reserve = sd_pr_reserve, | |
2018 | .pr_release = sd_pr_release, | |
2019 | .pr_preempt = sd_pr_preempt, | |
2020 | .pr_clear = sd_pr_clear, | |
0af7b5e2 MC |
2021 | .pr_read_keys = sd_pr_read_keys, |
2022 | .pr_read_reservation = sd_pr_read_reservation, | |
924d55b0 CH |
2023 | }; |
2024 | ||
9c63f7f6 CH |
2025 | static void scsi_disk_free_disk(struct gendisk *disk) |
2026 | { | |
2027 | struct scsi_disk *sdkp = scsi_disk(disk); | |
2028 | ||
2029 | put_device(&sdkp->disk_dev); | |
2030 | } | |
2031 | ||
83d5cde4 | 2032 | static const struct block_device_operations sd_fops = { |
1da177e4 | 2033 | .owner = THIS_MODULE, |
0338e291 AV |
2034 | .open = sd_open, |
2035 | .release = sd_release, | |
8a6cfeb6 | 2036 | .ioctl = sd_ioctl, |
a885c8c4 | 2037 | .getgeo = sd_getgeo, |
44328310 | 2038 | .compat_ioctl = blkdev_compat_ptr_ioctl, |
2bae0093 | 2039 | .check_events = sd_check_events, |
72ec24bd | 2040 | .unlock_native_capacity = sd_unlock_native_capacity, |
e76239a3 | 2041 | .report_zones = sd_zbc_report_zones, |
b83ce214 | 2042 | .get_unique_id = sd_get_unique_id, |
9c63f7f6 | 2043 | .free_disk = scsi_disk_free_disk, |
924d55b0 | 2044 | .pr_ops = &sd_pr_ops, |
1da177e4 LT |
2045 | }; |
2046 | ||
7a38dc0b HR |
2047 | /** |
2048 | * sd_eh_reset - reset error handling callback | |
2049 | * @scmd: sd-issued command that has failed | |
2050 | * | |
2051 | * This function is called by the SCSI midlayer before starting | |
2052 | * SCSI EH. When counting medium access failures we have to be | |
2053 | * careful to register it only only once per device and SCSI EH run; | |
2054 | * there might be several timed out commands which will cause the | |
2055 | * 'max_medium_access_timeouts' counter to trigger after the first | |
2056 | * SCSI EH run already and set the device to offline. | |
2057 | * So this function resets the internal counter before starting SCSI EH. | |
2058 | **/ | |
2059 | static void sd_eh_reset(struct scsi_cmnd *scmd) | |
2060 | { | |
f3fa33ac | 2061 | struct scsi_disk *sdkp = scsi_disk(scsi_cmd_to_rq(scmd)->q->disk); |
7a38dc0b HR |
2062 | |
2063 | /* New SCSI EH run, reset gate variable */ | |
2064 | sdkp->ignore_medium_access_errors = false; | |
2065 | } | |
2066 | ||
18a4d0a2 MP |
2067 | /** |
2068 | * sd_eh_action - error handling callback | |
2069 | * @scmd: sd-issued command that has failed | |
18a4d0a2 MP |
2070 | * @eh_disp: The recovery disposition suggested by the midlayer |
2071 | * | |
2451079b JB |
2072 | * This function is called by the SCSI midlayer upon completion of an |
2073 | * error test command (currently TEST UNIT READY). The result of sending | |
2074 | * the eh command is passed in eh_disp. We're looking for devices that | |
2075 | * fail medium access commands but are OK with non access commands like | |
2076 | * test unit ready (so wrongly see the device as having a successful | |
2077 | * recovery) | |
18a4d0a2 | 2078 | **/ |
2451079b | 2079 | static int sd_eh_action(struct scsi_cmnd *scmd, int eh_disp) |
18a4d0a2 | 2080 | { |
f3fa33ac | 2081 | struct scsi_disk *sdkp = scsi_disk(scsi_cmd_to_rq(scmd)->q->disk); |
0db6ca8a | 2082 | struct scsi_device *sdev = scmd->device; |
18a4d0a2 | 2083 | |
0db6ca8a | 2084 | if (!scsi_device_online(sdev) || |
2451079b JB |
2085 | !scsi_medium_access_command(scmd) || |
2086 | host_byte(scmd->result) != DID_TIME_OUT || | |
2087 | eh_disp != SUCCESS) | |
18a4d0a2 MP |
2088 | return eh_disp; |
2089 | ||
2090 | /* | |
2091 | * The device has timed out executing a medium access command. | |
2092 | * However, the TEST UNIT READY command sent during error | |
2093 | * handling completed successfully. Either the device is in the | |
2094 | * process of recovering or has it suffered an internal failure | |
2095 | * that prevents access to the storage medium. | |
2096 | */ | |
7a38dc0b HR |
2097 | if (!sdkp->ignore_medium_access_errors) { |
2098 | sdkp->medium_access_timed_out++; | |
2099 | sdkp->ignore_medium_access_errors = true; | |
2100 | } | |
18a4d0a2 MP |
2101 | |
2102 | /* | |
2103 | * If the device keeps failing read/write commands but TEST UNIT | |
2104 | * READY always completes successfully we assume that medium | |
2105 | * access is no longer possible and take the device offline. | |
2106 | */ | |
2107 | if (sdkp->medium_access_timed_out >= sdkp->max_medium_access_timeouts) { | |
2108 | scmd_printk(KERN_ERR, scmd, | |
2109 | "Medium access timeout failure. Offlining disk!\n"); | |
0db6ca8a BVA |
2110 | mutex_lock(&sdev->state_mutex); |
2111 | scsi_device_set_state(sdev, SDEV_OFFLINE); | |
2112 | mutex_unlock(&sdev->state_mutex); | |
18a4d0a2 | 2113 | |
e8f8d50e | 2114 | return SUCCESS; |
18a4d0a2 MP |
2115 | } |
2116 | ||
2117 | return eh_disp; | |
2118 | } | |
2119 | ||
af55ff67 MP |
2120 | static unsigned int sd_completed_bytes(struct scsi_cmnd *scmd) |
2121 | { | |
5999ccff | 2122 | struct request *req = scsi_cmd_to_rq(scmd); |
6eadc612 DLM |
2123 | struct scsi_device *sdev = scmd->device; |
2124 | unsigned int transferred, good_bytes; | |
2125 | u64 start_lba, end_lba, bad_lba; | |
2126 | ||
a8733c7b | 2127 | /* |
6eadc612 DLM |
2128 | * Some commands have a payload smaller than the device logical |
2129 | * block size (e.g. INQUIRY on a 4K disk). | |
a8733c7b | 2130 | */ |
6eadc612 | 2131 | if (scsi_bufflen(scmd) <= sdev->sector_size) |
af55ff67 MP |
2132 | return 0; |
2133 | ||
6eadc612 DLM |
2134 | /* Check if we have a 'bad_lba' information */ |
2135 | if (!scsi_get_sense_info_fld(scmd->sense_buffer, | |
2136 | SCSI_SENSE_BUFFERSIZE, | |
2137 | &bad_lba)) | |
af55ff67 MP |
2138 | return 0; |
2139 | ||
6eadc612 DLM |
2140 | /* |
2141 | * If the bad lba was reported incorrectly, we have no idea where | |
af55ff67 MP |
2142 | * the error is. |
2143 | */ | |
6eadc612 DLM |
2144 | start_lba = sectors_to_logical(sdev, blk_rq_pos(req)); |
2145 | end_lba = start_lba + bytes_to_logical(sdev, scsi_bufflen(scmd)); | |
2146 | if (bad_lba < start_lba || bad_lba >= end_lba) | |
af55ff67 MP |
2147 | return 0; |
2148 | ||
6eadc612 DLM |
2149 | /* |
2150 | * resid is optional but mostly filled in. When it's unused, | |
2151 | * its value is zero, so we assume the whole buffer transferred | |
af55ff67 | 2152 | */ |
6eadc612 DLM |
2153 | transferred = scsi_bufflen(scmd) - scsi_get_resid(scmd); |
2154 | ||
2155 | /* This computation should always be done in terms of the | |
2156 | * resolution of the device's medium. | |
af55ff67 | 2157 | */ |
6eadc612 DLM |
2158 | good_bytes = logical_to_bytes(sdev, bad_lba - start_lba); |
2159 | ||
a8733c7b | 2160 | return min(good_bytes, transferred); |
af55ff67 MP |
2161 | } |
2162 | ||
1da177e4 | 2163 | /** |
7b3d9545 | 2164 | * sd_done - bottom half handler: called when the lower level |
1da177e4 LT |
2165 | * driver has completed (successfully or otherwise) a scsi command. |
2166 | * @SCpnt: mid-level's per command structure. | |
2167 | * | |
2168 | * Note: potentially run from within an ISR. Must not block. | |
2169 | **/ | |
7b3d9545 | 2170 | static int sd_done(struct scsi_cmnd *SCpnt) |
1da177e4 LT |
2171 | { |
2172 | int result = SCpnt->result; | |
af55ff67 | 2173 | unsigned int good_bytes = result ? 0 : scsi_bufflen(SCpnt); |
c46f0917 DLM |
2174 | unsigned int sector_size = SCpnt->device->sector_size; |
2175 | unsigned int resid; | |
1da177e4 | 2176 | struct scsi_sense_hdr sshdr; |
5999ccff | 2177 | struct request *req = scsi_cmd_to_rq(SCpnt); |
f3fa33ac | 2178 | struct scsi_disk *sdkp = scsi_disk(req->q->disk); |
1da177e4 LT |
2179 | int sense_valid = 0; |
2180 | int sense_deferred = 0; | |
1da177e4 | 2181 | |
89d94756 HR |
2182 | switch (req_op(req)) { |
2183 | case REQ_OP_DISCARD: | |
02d26103 | 2184 | case REQ_OP_WRITE_ZEROES: |
89d94756 | 2185 | case REQ_OP_ZONE_RESET: |
d81e9d49 | 2186 | case REQ_OP_ZONE_RESET_ALL: |
ad512f20 AJ |
2187 | case REQ_OP_ZONE_OPEN: |
2188 | case REQ_OP_ZONE_CLOSE: | |
2189 | case REQ_OP_ZONE_FINISH: | |
26e85fcd MP |
2190 | if (!result) { |
2191 | good_bytes = blk_rq_bytes(req); | |
2192 | scsi_set_resid(SCpnt, 0); | |
2193 | } else { | |
2194 | good_bytes = 0; | |
2195 | scsi_set_resid(SCpnt, blk_rq_bytes(req)); | |
89d94756 HR |
2196 | } |
2197 | break; | |
c46f0917 DLM |
2198 | default: |
2199 | /* | |
2200 | * In case of bogus fw or device, we could end up having | |
2201 | * an unaligned partial completion. Check this here and force | |
2202 | * alignment. | |
2203 | */ | |
2204 | resid = scsi_get_resid(SCpnt); | |
2205 | if (resid & (sector_size - 1)) { | |
2206 | sd_printk(KERN_INFO, sdkp, | |
2207 | "Unaligned partial completion (resid=%u, sector_sz=%u)\n", | |
2208 | resid, sector_size); | |
670d8be2 | 2209 | scsi_print_command(SCpnt); |
c46f0917 DLM |
2210 | resid = min(scsi_bufflen(SCpnt), |
2211 | round_up(resid, sector_size)); | |
2212 | scsi_set_resid(SCpnt, resid); | |
2213 | } | |
26e85fcd | 2214 | } |
6a32a8ae | 2215 | |
1da177e4 LT |
2216 | if (result) { |
2217 | sense_valid = scsi_command_normalize_sense(SCpnt, &sshdr); | |
2218 | if (sense_valid) | |
2219 | sense_deferred = scsi_sense_is_deferred(&sshdr); | |
2220 | } | |
2a863ba8 DJ |
2221 | sdkp->medium_access_timed_out = 0; |
2222 | ||
464a00c9 | 2223 | if (!scsi_status_is_check_condition(result) && |
03aba2f7 LT |
2224 | (!sense_valid || sense_deferred)) |
2225 | goto out; | |
2226 | ||
2227 | switch (sshdr.sense_key) { | |
2228 | case HARDWARE_ERROR: | |
2229 | case MEDIUM_ERROR: | |
af55ff67 | 2230 | good_bytes = sd_completed_bytes(SCpnt); |
03aba2f7 LT |
2231 | break; |
2232 | case RECOVERED_ERROR: | |
af55ff67 MP |
2233 | good_bytes = scsi_bufflen(SCpnt); |
2234 | break; | |
10dab226 JW |
2235 | case NO_SENSE: |
2236 | /* This indicates a false check condition, so ignore it. An | |
2237 | * unknown amount of data was transferred so treat it as an | |
2238 | * error. | |
2239 | */ | |
10dab226 JW |
2240 | SCpnt->result = 0; |
2241 | memset(SCpnt->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); | |
2242 | break; | |
c98a0eb0 MP |
2243 | case ABORTED_COMMAND: |
2244 | if (sshdr.asc == 0x10) /* DIF: Target detected corruption */ | |
2245 | good_bytes = sd_completed_bytes(SCpnt); | |
2246 | break; | |
2247 | case ILLEGAL_REQUEST: | |
d227ec26 CH |
2248 | switch (sshdr.asc) { |
2249 | case 0x10: /* DIX: Host detected corruption */ | |
af55ff67 | 2250 | good_bytes = sd_completed_bytes(SCpnt); |
d227ec26 CH |
2251 | break; |
2252 | case 0x20: /* INVALID COMMAND OPCODE */ | |
2253 | case 0x24: /* INVALID FIELD IN CDB */ | |
2254 | switch (SCpnt->cmnd[0]) { | |
5db44863 MP |
2255 | case UNMAP: |
2256 | sd_config_discard(sdkp, SD_LBP_DISABLE); | |
2257 | break; | |
2258 | case WRITE_SAME_16: | |
2259 | case WRITE_SAME: | |
d227ec26 | 2260 | if (SCpnt->cmnd[1] & 8) { /* UNMAP */ |
5db44863 | 2261 | sd_config_discard(sdkp, SD_LBP_DISABLE); |
d227ec26 | 2262 | } else { |
5db44863 MP |
2263 | sdkp->device->no_write_same = 1; |
2264 | sd_config_write_same(sdkp); | |
e8064021 | 2265 | req->rq_flags |= RQF_QUIET; |
5db44863 | 2266 | } |
d227ec26 | 2267 | break; |
5db44863 MP |
2268 | } |
2269 | } | |
03aba2f7 LT |
2270 | break; |
2271 | default: | |
2272 | break; | |
1da177e4 | 2273 | } |
89d94756 | 2274 | |
03aba2f7 | 2275 | out: |
89d94756 | 2276 | if (sd_is_zoned(sdkp)) |
5795eb44 | 2277 | good_bytes = sd_zbc_complete(SCpnt, good_bytes, &sshdr); |
89d94756 | 2278 | |
ef61329d HR |
2279 | SCSI_LOG_HLCOMPLETE(1, scmd_printk(KERN_INFO, SCpnt, |
2280 | "sd_done: completed %d of %d bytes\n", | |
2281 | good_bytes, scsi_bufflen(SCpnt))); | |
2282 | ||
7b3d9545 | 2283 | return good_bytes; |
1da177e4 LT |
2284 | } |
2285 | ||
1da177e4 LT |
2286 | /* |
2287 | * spinup disk - called only in sd_revalidate_disk() | |
2288 | */ | |
2289 | static void | |
e73aec82 | 2290 | sd_spinup_disk(struct scsi_disk *sdkp) |
ea73a9f2 | 2291 | { |
c1acf38c | 2292 | static const u8 cmd[10] = { TEST_UNIT_READY }; |
4451e472 | 2293 | unsigned long spintime_expire = 0; |
c1acf38c | 2294 | int spintime, sense_valid = 0; |
1da177e4 LT |
2295 | unsigned int the_result; |
2296 | struct scsi_sense_hdr sshdr; | |
c1acf38c MC |
2297 | struct scsi_failure failure_defs[] = { |
2298 | /* Do not retry Medium Not Present */ | |
2299 | { | |
2300 | .sense = UNIT_ATTENTION, | |
2301 | .asc = 0x3A, | |
2302 | .ascq = SCMD_FAILURE_ASCQ_ANY, | |
2303 | .result = SAM_STAT_CHECK_CONDITION, | |
2304 | }, | |
2305 | { | |
2306 | .sense = NOT_READY, | |
2307 | .asc = 0x3A, | |
2308 | .ascq = SCMD_FAILURE_ASCQ_ANY, | |
2309 | .result = SAM_STAT_CHECK_CONDITION, | |
2310 | }, | |
2311 | /* Retry when scsi_status_is_good would return false 3 times */ | |
2312 | { | |
2313 | .result = SCMD_FAILURE_STAT_ANY, | |
2314 | .allowed = 3, | |
2315 | }, | |
2316 | {} | |
2317 | }; | |
2318 | struct scsi_failures failures = { | |
2319 | .failure_definitions = failure_defs, | |
2320 | }; | |
af16cd63 MC |
2321 | const struct scsi_exec_args exec_args = { |
2322 | .sshdr = &sshdr, | |
c1acf38c | 2323 | .failures = &failures, |
af16cd63 | 2324 | }; |
1da177e4 LT |
2325 | |
2326 | spintime = 0; | |
2327 | ||
2328 | /* Spin up drives, as required. Only do this at boot time */ | |
2329 | /* Spinup needs to be done for module loads too. */ | |
2330 | do { | |
c1acf38c | 2331 | bool media_was_present = sdkp->media_present; |
4521428c | 2332 | |
c1acf38c | 2333 | scsi_failures_reset_retries(&failures); |
1da177e4 | 2334 | |
c1acf38c MC |
2335 | the_result = scsi_execute_cmd(sdkp->device, cmd, REQ_OP_DRV_IN, |
2336 | NULL, 0, SD_TIMEOUT, | |
2337 | sdkp->max_retries, &exec_args); | |
1da177e4 | 2338 | |
b4d38e38 | 2339 | |
c1acf38c MC |
2340 | if (the_result > 0) { |
2341 | /* | |
2342 | * If the drive has indicated to us that it doesn't | |
2343 | * have any media in it, don't bother with any more | |
2344 | * polling. | |
2345 | */ | |
2346 | if (media_not_present(sdkp, &sshdr)) { | |
2347 | if (media_was_present) | |
2348 | sd_printk(KERN_NOTICE, sdkp, | |
2349 | "Media removed, stopped polling\n"); | |
2350 | return; | |
b4d0c33a | 2351 | } |
c1acf38c MC |
2352 | sense_valid = scsi_sense_valid(&sshdr); |
2353 | } | |
1da177e4 | 2354 | |
464a00c9 | 2355 | if (!scsi_status_is_check_condition(the_result)) { |
1da177e4 LT |
2356 | /* no sense, TUR either succeeded or failed |
2357 | * with a status error */ | |
e73aec82 | 2358 | if(!spintime && !scsi_status_is_good(the_result)) { |
ef61329d HR |
2359 | sd_print_result(sdkp, "Test Unit Ready failed", |
2360 | the_result); | |
e73aec82 | 2361 | } |
1da177e4 LT |
2362 | break; |
2363 | } | |
ef61329d | 2364 | |
1da177e4 LT |
2365 | /* |
2366 | * The device does not want the automatic start to be issued. | |
2367 | */ | |
33dd6f92 | 2368 | if (sdkp->device->no_start_on_add) |
1da177e4 | 2369 | break; |
1da177e4 | 2370 | |
33dd6f92 MW |
2371 | if (sense_valid && sshdr.sense_key == NOT_READY) { |
2372 | if (sshdr.asc == 4 && sshdr.ascq == 3) | |
2373 | break; /* manual intervention required */ | |
2374 | if (sshdr.asc == 4 && sshdr.ascq == 0xb) | |
2375 | break; /* standby */ | |
2376 | if (sshdr.asc == 4 && sshdr.ascq == 0xc) | |
2377 | break; /* unavailable */ | |
505aa4b6 MR |
2378 | if (sshdr.asc == 4 && sshdr.ascq == 0x1b) |
2379 | break; /* sanitize in progress */ | |
2bbeb8d1 DG |
2380 | if (sshdr.asc == 4 && sshdr.ascq == 0x24) |
2381 | break; /* depopulation in progress */ | |
2382 | if (sshdr.asc == 4 && sshdr.ascq == 0x25) | |
2383 | break; /* depopulation restoration in progress */ | |
33dd6f92 MW |
2384 | /* |
2385 | * Issue command to spin up drive when not ready | |
2386 | */ | |
1da177e4 | 2387 | if (!spintime) { |
1008f577 MC |
2388 | /* Return immediately and start spin cycle */ |
2389 | const u8 start_cmd[10] = { | |
2390 | [0] = START_STOP, | |
2391 | [1] = 1, | |
2392 | [4] = sdkp->device->start_stop_pwr_cond ? | |
2393 | 0x11 : 1, | |
2394 | }; | |
2395 | ||
e73aec82 | 2396 | sd_printk(KERN_NOTICE, sdkp, "Spinning up disk..."); |
1008f577 | 2397 | scsi_execute_cmd(sdkp->device, start_cmd, |
af16cd63 | 2398 | REQ_OP_DRV_IN, NULL, 0, |
0610959f | 2399 | SD_TIMEOUT, sdkp->max_retries, |
af16cd63 | 2400 | &exec_args); |
4451e472 AS |
2401 | spintime_expire = jiffies + 100 * HZ; |
2402 | spintime = 1; | |
1da177e4 | 2403 | } |
1da177e4 LT |
2404 | /* Wait 1 second for next try */ |
2405 | msleep(1000); | |
3a1d0783 | 2406 | printk(KERN_CONT "."); |
4451e472 AS |
2407 | |
2408 | /* | |
2409 | * Wait for USB flash devices with slow firmware. | |
2410 | * Yes, this sense key/ASC combination shouldn't | |
2411 | * occur here. It's characteristic of these devices. | |
2412 | */ | |
2413 | } else if (sense_valid && | |
2414 | sshdr.sense_key == UNIT_ATTENTION && | |
2415 | sshdr.asc == 0x28) { | |
2416 | if (!spintime) { | |
2417 | spintime_expire = jiffies + 5 * HZ; | |
2418 | spintime = 1; | |
2419 | } | |
2420 | /* Wait 1 second for next try */ | |
2421 | msleep(1000); | |
1da177e4 LT |
2422 | } else { |
2423 | /* we don't understand the sense code, so it's | |
2424 | * probably pointless to loop */ | |
2425 | if(!spintime) { | |
e73aec82 MP |
2426 | sd_printk(KERN_NOTICE, sdkp, "Unit Not Ready\n"); |
2427 | sd_print_sense_hdr(sdkp, &sshdr); | |
1da177e4 LT |
2428 | } |
2429 | break; | |
2430 | } | |
2431 | ||
4451e472 | 2432 | } while (spintime && time_before_eq(jiffies, spintime_expire)); |
1da177e4 LT |
2433 | |
2434 | if (spintime) { | |
2435 | if (scsi_status_is_good(the_result)) | |
3a1d0783 | 2436 | printk(KERN_CONT "ready\n"); |
1da177e4 | 2437 | else |
3a1d0783 | 2438 | printk(KERN_CONT "not responding...\n"); |
1da177e4 LT |
2439 | } |
2440 | } | |
2441 | ||
e0597d70 MP |
2442 | /* |
2443 | * Determine whether disk supports Data Integrity Field. | |
2444 | */ | |
fe542396 | 2445 | static int sd_read_protection_type(struct scsi_disk *sdkp, unsigned char *buffer) |
e0597d70 MP |
2446 | { |
2447 | struct scsi_device *sdp = sdkp->device; | |
2448 | u8 type; | |
2449 | ||
465f4eda XC |
2450 | if (scsi_device_protection(sdp) == 0 || (buffer[12] & 1) == 0) { |
2451 | sdkp->protection_type = 0; | |
1e029397 | 2452 | return 0; |
465f4eda | 2453 | } |
35e1a5d9 MP |
2454 | |
2455 | type = ((buffer[12] >> 1) & 7) + 1; /* P_TYPE 0 = Type 1 */ | |
2456 | ||
1e029397 MP |
2457 | if (type > T10_PI_TYPE3_PROTECTION) { |
2458 | sd_printk(KERN_ERR, sdkp, "formatted with unsupported" \ | |
2459 | " protection type %u. Disabling disk!\n", | |
2460 | type); | |
2461 | sdkp->protection_type = 0; | |
2462 | return -ENODEV; | |
2463 | } | |
e0597d70 | 2464 | |
be922f47 MP |
2465 | sdkp->protection_type = type; |
2466 | ||
1e029397 MP |
2467 | return 0; |
2468 | } | |
2469 | ||
2470 | static void sd_config_protection(struct scsi_disk *sdkp) | |
2471 | { | |
2472 | struct scsi_device *sdp = sdkp->device; | |
2473 | ||
1e029397 MP |
2474 | sd_dif_config_host(sdkp); |
2475 | ||
2476 | if (!sdkp->protection_type) | |
2477 | return; | |
2478 | ||
2479 | if (!scsi_host_dif_capable(sdp->host, sdkp->protection_type)) { | |
26a02d97 XY |
2480 | sd_first_printk(KERN_NOTICE, sdkp, |
2481 | "Disabling DIF Type %u protection\n", | |
2482 | sdkp->protection_type); | |
1e029397 MP |
2483 | sdkp->protection_type = 0; |
2484 | } | |
2485 | ||
26a02d97 XY |
2486 | sd_first_printk(KERN_NOTICE, sdkp, "Enabling DIF Type %u protection\n", |
2487 | sdkp->protection_type); | |
e0597d70 MP |
2488 | } |
2489 | ||
0da205e0 MW |
2490 | static void read_capacity_error(struct scsi_disk *sdkp, struct scsi_device *sdp, |
2491 | struct scsi_sense_hdr *sshdr, int sense_valid, | |
2492 | int the_result) | |
2493 | { | |
464a00c9 | 2494 | if (sense_valid) |
0da205e0 MW |
2495 | sd_print_sense_hdr(sdkp, sshdr); |
2496 | else | |
2497 | sd_printk(KERN_NOTICE, sdkp, "Sense not available.\n"); | |
2498 | ||
2499 | /* | |
2500 | * Set dirty bit for removable devices if not ready - | |
2501 | * sometimes drives will not report this properly. | |
2502 | */ | |
2503 | if (sdp->removable && | |
2504 | sense_valid && sshdr->sense_key == NOT_READY) | |
2bae0093 | 2505 | set_media_not_present(sdkp); |
0da205e0 MW |
2506 | |
2507 | /* | |
2508 | * We used to set media_present to 0 here to indicate no media | |
2509 | * in the drive, but some drives fail read capacity even with | |
2510 | * media present, so we can't do that. | |
2511 | */ | |
2512 | sdkp->capacity = 0; /* unknown mapped to zero - as usual */ | |
2513 | } | |
2514 | ||
2515 | #define RC16_LEN 32 | |
2516 | #if RC16_LEN > SD_BUF_SIZE | |
2517 | #error RC16_LEN must not be more than SD_BUF_SIZE | |
2518 | #endif | |
2519 | ||
3233ac19 JB |
2520 | #define READ_CAPACITY_RETRIES_ON_RESET 10 |
2521 | ||
0da205e0 MW |
2522 | static int read_capacity_16(struct scsi_disk *sdkp, struct scsi_device *sdp, |
2523 | unsigned char *buffer) | |
ea73a9f2 | 2524 | { |
1da177e4 | 2525 | unsigned char cmd[16]; |
1da177e4 | 2526 | struct scsi_sense_hdr sshdr; |
af16cd63 MC |
2527 | const struct scsi_exec_args exec_args = { |
2528 | .sshdr = &sshdr, | |
2529 | }; | |
1da177e4 | 2530 | int sense_valid = 0; |
0da205e0 | 2531 | int the_result; |
3233ac19 | 2532 | int retries = 3, reset_retries = READ_CAPACITY_RETRIES_ON_RESET; |
ea09bcc9 | 2533 | unsigned int alignment; |
0da205e0 MW |
2534 | unsigned long long lba; |
2535 | unsigned sector_size; | |
1da177e4 | 2536 | |
5ce524bd HG |
2537 | if (sdp->no_read_capacity_16) |
2538 | return -EINVAL; | |
2539 | ||
1da177e4 | 2540 | do { |
0da205e0 | 2541 | memset(cmd, 0, 16); |
eb846d9f | 2542 | cmd[0] = SERVICE_ACTION_IN_16; |
0da205e0 MW |
2543 | cmd[1] = SAI_READ_CAPACITY_16; |
2544 | cmd[13] = RC16_LEN; | |
2545 | memset(buffer, 0, RC16_LEN); | |
2546 | ||
af16cd63 MC |
2547 | the_result = scsi_execute_cmd(sdp, cmd, REQ_OP_DRV_IN, |
2548 | buffer, RC16_LEN, SD_TIMEOUT, | |
2549 | sdkp->max_retries, &exec_args); | |
ced202f7 | 2550 | if (the_result > 0) { |
bd593bd2 MC |
2551 | if (media_not_present(sdkp, &sshdr)) |
2552 | return -ENODEV; | |
2553 | ||
ea73a9f2 | 2554 | sense_valid = scsi_sense_valid(&sshdr); |
2b301307 MW |
2555 | if (sense_valid && |
2556 | sshdr.sense_key == ILLEGAL_REQUEST && | |
2557 | (sshdr.asc == 0x20 || sshdr.asc == 0x24) && | |
2558 | sshdr.ascq == 0x00) | |
2559 | /* Invalid Command Operation Code or | |
2560 | * Invalid Field in CDB, just retry | |
2561 | * silently with RC10 */ | |
2562 | return -EINVAL; | |
3233ac19 JB |
2563 | if (sense_valid && |
2564 | sshdr.sense_key == UNIT_ATTENTION && | |
2565 | sshdr.asc == 0x29 && sshdr.ascq == 0x00) | |
2566 | /* Device reset might occur several times, | |
2567 | * give it one more chance */ | |
2568 | if (--reset_retries > 0) | |
2569 | continue; | |
2b301307 | 2570 | } |
1da177e4 LT |
2571 | retries--; |
2572 | ||
2573 | } while (the_result && retries); | |
2574 | ||
0da205e0 | 2575 | if (the_result) { |
ef61329d | 2576 | sd_print_result(sdkp, "Read Capacity(16) failed", the_result); |
0da205e0 MW |
2577 | read_capacity_error(sdkp, sdp, &sshdr, sense_valid, the_result); |
2578 | return -EINVAL; | |
2579 | } | |
e73aec82 | 2580 | |
8f76d151 DH |
2581 | sector_size = get_unaligned_be32(&buffer[8]); |
2582 | lba = get_unaligned_be64(&buffer[0]); | |
0da205e0 | 2583 | |
fe542396 MP |
2584 | if (sd_read_protection_type(sdkp, buffer) < 0) { |
2585 | sdkp->capacity = 0; | |
2586 | return -ENODEV; | |
2587 | } | |
0da205e0 | 2588 | |
ea09bcc9 | 2589 | /* Logical blocks per physical block exponent */ |
526f7c79 | 2590 | sdkp->physical_block_size = (1 << (buffer[13] & 0xf)) * sector_size; |
ea09bcc9 | 2591 | |
89d94756 HR |
2592 | /* RC basis */ |
2593 | sdkp->rc_basis = (buffer[12] >> 4) & 0x3; | |
2594 | ||
ea09bcc9 MP |
2595 | /* Lowest aligned logical block */ |
2596 | alignment = ((buffer[14] & 0x3f) << 8 | buffer[15]) * sector_size; | |
2597 | blk_queue_alignment_offset(sdp->request_queue, alignment); | |
2598 | if (alignment && sdkp->first_scan) | |
2599 | sd_printk(KERN_NOTICE, sdkp, | |
2600 | "physical block alignment offset: %u\n", alignment); | |
2601 | ||
c98a0eb0 MP |
2602 | if (buffer[14] & 0x80) { /* LBPME */ |
2603 | sdkp->lbpme = 1; | |
e339c1a7 | 2604 | |
c98a0eb0 MP |
2605 | if (buffer[14] & 0x40) /* LBPRZ */ |
2606 | sdkp->lbprz = 1; | |
e339c1a7 | 2607 | |
c98a0eb0 | 2608 | sd_config_discard(sdkp, SD_LBP_WS16); |
e339c1a7 MP |
2609 | } |
2610 | ||
0da205e0 MW |
2611 | sdkp->capacity = lba + 1; |
2612 | return sector_size; | |
2613 | } | |
2614 | ||
2615 | static int read_capacity_10(struct scsi_disk *sdkp, struct scsi_device *sdp, | |
2616 | unsigned char *buffer) | |
2617 | { | |
0f11328f | 2618 | static const u8 cmd[10] = { READ_CAPACITY }; |
0da205e0 | 2619 | struct scsi_sense_hdr sshdr; |
0f11328f MC |
2620 | struct scsi_failure failure_defs[] = { |
2621 | /* Do not retry Medium Not Present */ | |
2622 | { | |
2623 | .sense = UNIT_ATTENTION, | |
2624 | .asc = 0x3A, | |
2625 | .result = SAM_STAT_CHECK_CONDITION, | |
2626 | }, | |
2627 | { | |
2628 | .sense = NOT_READY, | |
2629 | .asc = 0x3A, | |
2630 | .result = SAM_STAT_CHECK_CONDITION, | |
2631 | }, | |
2632 | /* Device reset might occur several times so retry a lot */ | |
2633 | { | |
2634 | .sense = UNIT_ATTENTION, | |
2635 | .asc = 0x29, | |
2636 | .allowed = READ_CAPACITY_RETRIES_ON_RESET, | |
2637 | .result = SAM_STAT_CHECK_CONDITION, | |
2638 | }, | |
2639 | /* Any other error not listed above retry 3 times */ | |
2640 | { | |
2641 | .result = SCMD_FAILURE_RESULT_ANY, | |
2642 | .allowed = 3, | |
2643 | }, | |
2644 | {} | |
2645 | }; | |
2646 | struct scsi_failures failures = { | |
2647 | .failure_definitions = failure_defs, | |
2648 | }; | |
af16cd63 MC |
2649 | const struct scsi_exec_args exec_args = { |
2650 | .sshdr = &sshdr, | |
0f11328f | 2651 | .failures = &failures, |
af16cd63 | 2652 | }; |
0da205e0 MW |
2653 | int sense_valid = 0; |
2654 | int the_result; | |
0da205e0 MW |
2655 | sector_t lba; |
2656 | unsigned sector_size; | |
2657 | ||
0f11328f | 2658 | memset(buffer, 0, 8); |
0da205e0 | 2659 | |
0f11328f MC |
2660 | the_result = scsi_execute_cmd(sdp, cmd, REQ_OP_DRV_IN, buffer, |
2661 | 8, SD_TIMEOUT, sdkp->max_retries, | |
2662 | &exec_args); | |
0da205e0 | 2663 | |
0f11328f MC |
2664 | if (the_result > 0) { |
2665 | sense_valid = scsi_sense_valid(&sshdr); | |
0da205e0 MW |
2666 | |
2667 | if (media_not_present(sdkp, &sshdr)) | |
2668 | return -ENODEV; | |
0f11328f | 2669 | } |
0da205e0 MW |
2670 | |
2671 | if (the_result) { | |
ef61329d | 2672 | sd_print_result(sdkp, "Read Capacity(10) failed", the_result); |
0da205e0 MW |
2673 | read_capacity_error(sdkp, sdp, &sshdr, sense_valid, the_result); |
2674 | return -EINVAL; | |
2675 | } | |
2676 | ||
8f76d151 DH |
2677 | sector_size = get_unaligned_be32(&buffer[4]); |
2678 | lba = get_unaligned_be32(&buffer[0]); | |
0da205e0 | 2679 | |
5ce524bd HG |
2680 | if (sdp->no_read_capacity_16 && (lba == 0xffffffff)) { |
2681 | /* Some buggy (usb cardreader) devices return an lba of | |
2682 | 0xffffffff when the want to report a size of 0 (with | |
2683 | which they really mean no media is present) */ | |
2684 | sdkp->capacity = 0; | |
5cc10350 | 2685 | sdkp->physical_block_size = sector_size; |
5ce524bd HG |
2686 | return sector_size; |
2687 | } | |
2688 | ||
0da205e0 | 2689 | sdkp->capacity = lba + 1; |
526f7c79 | 2690 | sdkp->physical_block_size = sector_size; |
0da205e0 MW |
2691 | return sector_size; |
2692 | } | |
2693 | ||
2b301307 MW |
2694 | static int sd_try_rc16_first(struct scsi_device *sdp) |
2695 | { | |
f87146bb HR |
2696 | if (sdp->host->max_cmd_len < 16) |
2697 | return 0; | |
6a0bdffa AS |
2698 | if (sdp->try_rc_10_first) |
2699 | return 0; | |
2b301307 MW |
2700 | if (sdp->scsi_level > SCSI_SPC_2) |
2701 | return 1; | |
2702 | if (scsi_device_protection(sdp)) | |
2703 | return 1; | |
2704 | return 0; | |
2705 | } | |
2706 | ||
0da205e0 MW |
2707 | /* |
2708 | * read disk capacity | |
2709 | */ | |
2710 | static void | |
2711 | sd_read_capacity(struct scsi_disk *sdkp, unsigned char *buffer) | |
2712 | { | |
2713 | int sector_size; | |
2714 | struct scsi_device *sdp = sdkp->device; | |
2715 | ||
2b301307 | 2716 | if (sd_try_rc16_first(sdp)) { |
0da205e0 MW |
2717 | sector_size = read_capacity_16(sdkp, sdp, buffer); |
2718 | if (sector_size == -EOVERFLOW) | |
1da177e4 | 2719 | goto got_data; |
2b301307 MW |
2720 | if (sector_size == -ENODEV) |
2721 | return; | |
2722 | if (sector_size < 0) | |
2723 | sector_size = read_capacity_10(sdkp, sdp, buffer); | |
0da205e0 MW |
2724 | if (sector_size < 0) |
2725 | return; | |
1da177e4 | 2726 | } else { |
0da205e0 MW |
2727 | sector_size = read_capacity_10(sdkp, sdp, buffer); |
2728 | if (sector_size == -EOVERFLOW) | |
2729 | goto got_data; | |
2730 | if (sector_size < 0) | |
2731 | return; | |
2732 | if ((sizeof(sdkp->capacity) > 4) && | |
2733 | (sdkp->capacity > 0xffffffffULL)) { | |
2734 | int old_sector_size = sector_size; | |
2735 | sd_printk(KERN_NOTICE, sdkp, "Very big device. " | |
2736 | "Trying to use READ CAPACITY(16).\n"); | |
2737 | sector_size = read_capacity_16(sdkp, sdp, buffer); | |
2738 | if (sector_size < 0) { | |
2739 | sd_printk(KERN_NOTICE, sdkp, | |
2740 | "Using 0xffffffff as device size\n"); | |
2741 | sdkp->capacity = 1 + (sector_t) 0xffffffff; | |
2742 | sector_size = old_sector_size; | |
2743 | goto got_data; | |
2744 | } | |
597d7400 MP |
2745 | /* Remember that READ CAPACITY(16) succeeded */ |
2746 | sdp->try_rc_10_first = 0; | |
0da205e0 MW |
2747 | } |
2748 | } | |
1da177e4 | 2749 | |
5c211caa AS |
2750 | /* Some devices are known to return the total number of blocks, |
2751 | * not the highest block number. Some devices have versions | |
2752 | * which do this and others which do not. Some devices we might | |
2753 | * suspect of doing this but we don't know for certain. | |
2754 | * | |
2755 | * If we know the reported capacity is wrong, decrement it. If | |
2756 | * we can only guess, then assume the number of blocks is even | |
2757 | * (usually true but not always) and err on the side of lowering | |
2758 | * the capacity. | |
2759 | */ | |
2760 | if (sdp->fix_capacity || | |
2761 | (sdp->guess_capacity && (sdkp->capacity & 0x01))) { | |
2762 | sd_printk(KERN_INFO, sdkp, "Adjusting the sector count " | |
2763 | "from its reported value: %llu\n", | |
2764 | (unsigned long long) sdkp->capacity); | |
1da177e4 | 2765 | --sdkp->capacity; |
61bf54b7 ON |
2766 | } |
2767 | ||
1da177e4 LT |
2768 | got_data: |
2769 | if (sector_size == 0) { | |
2770 | sector_size = 512; | |
e73aec82 MP |
2771 | sd_printk(KERN_NOTICE, sdkp, "Sector size 0 reported, " |
2772 | "assuming 512.\n"); | |
1da177e4 LT |
2773 | } |
2774 | ||
2775 | if (sector_size != 512 && | |
2776 | sector_size != 1024 && | |
2777 | sector_size != 2048 && | |
74856fbf | 2778 | sector_size != 4096) { |
e73aec82 MP |
2779 | sd_printk(KERN_NOTICE, sdkp, "Unsupported sector size %d.\n", |
2780 | sector_size); | |
1da177e4 LT |
2781 | /* |
2782 | * The user might want to re-format the drive with | |
2783 | * a supported sectorsize. Once this happens, it | |
2784 | * would be relatively trivial to set the thing up. | |
2785 | * For this reason, we leave the thing in the table. | |
2786 | */ | |
2787 | sdkp->capacity = 0; | |
2788 | /* | |
2789 | * set a bogus sector size so the normal read/write | |
2790 | * logic in the block layer will eventually refuse any | |
2791 | * request on this device without tripping over power | |
2792 | * of two sector size assumptions | |
2793 | */ | |
2794 | sector_size = 512; | |
2795 | } | |
e1defc4f | 2796 | blk_queue_logical_block_size(sdp->request_queue, sector_size); |
89d94756 HR |
2797 | blk_queue_physical_block_size(sdp->request_queue, |
2798 | sdkp->physical_block_size); | |
2799 | sdkp->device->sector_size = sector_size; | |
7404ad3b | 2800 | |
89d94756 HR |
2801 | if (sdkp->capacity > 0xffffffff) |
2802 | sdp->use_16_for_rw = 1; | |
1da177e4 | 2803 | |
89d94756 | 2804 | } |
1da177e4 | 2805 | |
89d94756 HR |
2806 | /* |
2807 | * Print disk capacity | |
2808 | */ | |
2809 | static void | |
2810 | sd_print_capacity(struct scsi_disk *sdkp, | |
2811 | sector_t old_capacity) | |
2812 | { | |
2813 | int sector_size = sdkp->device->sector_size; | |
2814 | char cap_str_2[10], cap_str_10[10]; | |
ea09bcc9 | 2815 | |
d7e6db20 DLM |
2816 | if (!sdkp->first_scan && old_capacity == sdkp->capacity) |
2817 | return; | |
2818 | ||
89d94756 HR |
2819 | string_get_size(sdkp->capacity, sector_size, |
2820 | STRING_UNITS_2, cap_str_2, sizeof(cap_str_2)); | |
2821 | string_get_size(sdkp->capacity, sector_size, | |
d7e6db20 | 2822 | STRING_UNITS_10, cap_str_10, sizeof(cap_str_10)); |
1da177e4 | 2823 | |
d7e6db20 DLM |
2824 | sd_printk(KERN_NOTICE, sdkp, |
2825 | "%llu %d-byte logical blocks: (%s/%s)\n", | |
2826 | (unsigned long long)sdkp->capacity, | |
2827 | sector_size, cap_str_10, cap_str_2); | |
53ad570b | 2828 | |
d7e6db20 DLM |
2829 | if (sdkp->physical_block_size != sector_size) |
2830 | sd_printk(KERN_NOTICE, sdkp, | |
2831 | "%u-byte physical blocks\n", | |
2832 | sdkp->physical_block_size); | |
1da177e4 LT |
2833 | } |
2834 | ||
2835 | /* called with buffer of length 512 */ | |
2836 | static inline int | |
0610959f | 2837 | sd_do_mode_sense(struct scsi_disk *sdkp, int dbd, int modepage, |
ea73a9f2 JB |
2838 | unsigned char *buffer, int len, struct scsi_mode_data *data, |
2839 | struct scsi_sense_hdr *sshdr) | |
1da177e4 | 2840 | { |
c749301e DLM |
2841 | /* |
2842 | * If we must use MODE SENSE(10), make sure that the buffer length | |
2843 | * is at least 8 bytes so that the mode sense header fits. | |
2844 | */ | |
2845 | if (sdkp->device->use_10_for_ms && len < 8) | |
2846 | len = 8; | |
2847 | ||
a6cdc35f DLM |
2848 | return scsi_mode_sense(sdkp->device, dbd, modepage, 0, buffer, len, |
2849 | SD_TIMEOUT, sdkp->max_retries, data, sshdr); | |
1da177e4 LT |
2850 | } |
2851 | ||
2852 | /* | |
2853 | * read write protect setting, if possible - called only in sd_revalidate_disk() | |
48970800 | 2854 | * called with buffer of length SD_BUF_SIZE |
1da177e4 LT |
2855 | */ |
2856 | static void | |
e73aec82 | 2857 | sd_read_write_protect_flag(struct scsi_disk *sdkp, unsigned char *buffer) |
ea73a9f2 | 2858 | { |
1da177e4 | 2859 | int res; |
ea73a9f2 | 2860 | struct scsi_device *sdp = sdkp->device; |
1da177e4 | 2861 | struct scsi_mode_data data; |
70a9b873 | 2862 | int old_wp = sdkp->write_prot; |
1da177e4 LT |
2863 | |
2864 | set_disk_ro(sdkp->disk, 0); | |
ea73a9f2 | 2865 | if (sdp->skip_ms_page_3f) { |
b2bff6ce | 2866 | sd_first_printk(KERN_NOTICE, sdkp, "Assuming Write Enabled\n"); |
1da177e4 LT |
2867 | return; |
2868 | } | |
2869 | ||
ea73a9f2 | 2870 | if (sdp->use_192_bytes_for_3f) { |
0610959f | 2871 | res = sd_do_mode_sense(sdkp, 0, 0x3F, buffer, 192, &data, NULL); |
1da177e4 LT |
2872 | } else { |
2873 | /* | |
2874 | * First attempt: ask for all pages (0x3F), but only 4 bytes. | |
2875 | * We have to start carefully: some devices hang if we ask | |
2876 | * for more than is available. | |
2877 | */ | |
0610959f | 2878 | res = sd_do_mode_sense(sdkp, 0, 0x3F, buffer, 4, &data, NULL); |
1da177e4 LT |
2879 | |
2880 | /* | |
2881 | * Second attempt: ask for page 0 When only page 0 is | |
2882 | * implemented, a request for page 3F may return Sense Key | |
2883 | * 5: Illegal Request, Sense Code 24: Invalid field in | |
2884 | * CDB. | |
2885 | */ | |
8793613d | 2886 | if (res < 0) |
0610959f | 2887 | res = sd_do_mode_sense(sdkp, 0, 0, buffer, 4, &data, NULL); |
1da177e4 LT |
2888 | |
2889 | /* | |
2890 | * Third attempt: ask 255 bytes, as we did earlier. | |
2891 | */ | |
8793613d | 2892 | if (res < 0) |
0610959f | 2893 | res = sd_do_mode_sense(sdkp, 0, 0x3F, buffer, 255, |
ea73a9f2 | 2894 | &data, NULL); |
1da177e4 LT |
2895 | } |
2896 | ||
8793613d | 2897 | if (res < 0) { |
b2bff6ce | 2898 | sd_first_printk(KERN_WARNING, sdkp, |
e73aec82 | 2899 | "Test WP failed, assume Write Enabled\n"); |
1da177e4 LT |
2900 | } else { |
2901 | sdkp->write_prot = ((data.device_specific & 0x80) != 0); | |
8acf608e | 2902 | set_disk_ro(sdkp->disk, sdkp->write_prot); |
70a9b873 MP |
2903 | if (sdkp->first_scan || old_wp != sdkp->write_prot) { |
2904 | sd_printk(KERN_NOTICE, sdkp, "Write Protect is %s\n", | |
2905 | sdkp->write_prot ? "on" : "off"); | |
df441cc0 | 2906 | sd_printk(KERN_DEBUG, sdkp, "Mode Sense: %4ph\n", buffer); |
70a9b873 | 2907 | } |
1da177e4 LT |
2908 | } |
2909 | } | |
2910 | ||
2911 | /* | |
2912 | * sd_read_cache_type - called only from sd_revalidate_disk() | |
48970800 | 2913 | * called with buffer of length SD_BUF_SIZE |
1da177e4 LT |
2914 | */ |
2915 | static void | |
e73aec82 | 2916 | sd_read_cache_type(struct scsi_disk *sdkp, unsigned char *buffer) |
631e8a13 | 2917 | { |
1da177e4 | 2918 | int len = 0, res; |
ea73a9f2 | 2919 | struct scsi_device *sdp = sdkp->device; |
1da177e4 | 2920 | |
631e8a13 AV |
2921 | int dbd; |
2922 | int modepage; | |
0bcaa111 | 2923 | int first_len; |
1da177e4 LT |
2924 | struct scsi_mode_data data; |
2925 | struct scsi_sense_hdr sshdr; | |
70a9b873 MP |
2926 | int old_wce = sdkp->WCE; |
2927 | int old_rcd = sdkp->RCD; | |
2928 | int old_dpofua = sdkp->DPOFUA; | |
1da177e4 | 2929 | |
39c60a09 JB |
2930 | |
2931 | if (sdkp->cache_override) | |
2932 | return; | |
2933 | ||
0bcaa111 LT |
2934 | first_len = 4; |
2935 | if (sdp->skip_ms_page_8) { | |
2936 | if (sdp->type == TYPE_RBC) | |
2937 | goto defaults; | |
2938 | else { | |
2939 | if (sdp->skip_ms_page_3f) | |
2940 | goto defaults; | |
2941 | modepage = 0x3F; | |
2942 | if (sdp->use_192_bytes_for_3f) | |
2943 | first_len = 192; | |
2944 | dbd = 0; | |
2945 | } | |
2946 | } else if (sdp->type == TYPE_RBC) { | |
631e8a13 AV |
2947 | modepage = 6; |
2948 | dbd = 8; | |
2949 | } else { | |
2950 | modepage = 8; | |
2951 | dbd = 0; | |
2952 | } | |
2953 | ||
1da177e4 | 2954 | /* cautiously ask */ |
0610959f | 2955 | res = sd_do_mode_sense(sdkp, dbd, modepage, buffer, first_len, |
0bcaa111 | 2956 | &data, &sshdr); |
1da177e4 | 2957 | |
8793613d | 2958 | if (res < 0) |
1da177e4 LT |
2959 | goto bad_sense; |
2960 | ||
6d73c851 AV |
2961 | if (!data.header_length) { |
2962 | modepage = 6; | |
0bcaa111 | 2963 | first_len = 0; |
b2bff6ce MP |
2964 | sd_first_printk(KERN_ERR, sdkp, |
2965 | "Missing header in MODE_SENSE response\n"); | |
6d73c851 AV |
2966 | } |
2967 | ||
1da177e4 LT |
2968 | /* that went OK, now ask for the proper length */ |
2969 | len = data.length; | |
2970 | ||
2971 | /* | |
2972 | * We're only interested in the first three bytes, actually. | |
2973 | * But the data cache page is defined for the first 20. | |
2974 | */ | |
2975 | if (len < 3) | |
2976 | goto bad_sense; | |
0bcaa111 | 2977 | else if (len > SD_BUF_SIZE) { |
b2bff6ce | 2978 | sd_first_printk(KERN_NOTICE, sdkp, "Truncating mode parameter " |
0bcaa111 LT |
2979 | "data from %d to %d bytes\n", len, SD_BUF_SIZE); |
2980 | len = SD_BUF_SIZE; | |
2981 | } | |
2982 | if (modepage == 0x3F && sdp->use_192_bytes_for_3f) | |
2983 | len = 192; | |
1da177e4 LT |
2984 | |
2985 | /* Get the data */ | |
0bcaa111 | 2986 | if (len > first_len) |
0610959f | 2987 | res = sd_do_mode_sense(sdkp, dbd, modepage, buffer, len, |
0bcaa111 | 2988 | &data, &sshdr); |
1da177e4 | 2989 | |
8793613d | 2990 | if (!res) { |
631e8a13 | 2991 | int offset = data.header_length + data.block_descriptor_length; |
1da177e4 | 2992 | |
0bcaa111 LT |
2993 | while (offset < len) { |
2994 | u8 page_code = buffer[offset] & 0x3F; | |
2995 | u8 spf = buffer[offset] & 0x40; | |
2996 | ||
2997 | if (page_code == 8 || page_code == 6) { | |
2998 | /* We're interested only in the first 3 bytes. | |
2999 | */ | |
3000 | if (len - offset <= 2) { | |
b2bff6ce MP |
3001 | sd_first_printk(KERN_ERR, sdkp, |
3002 | "Incomplete mode parameter " | |
3003 | "data\n"); | |
0bcaa111 LT |
3004 | goto defaults; |
3005 | } else { | |
3006 | modepage = page_code; | |
3007 | goto Page_found; | |
3008 | } | |
3009 | } else { | |
3010 | /* Go to the next page */ | |
3011 | if (spf && len - offset > 3) | |
3012 | offset += 4 + (buffer[offset+2] << 8) + | |
3013 | buffer[offset+3]; | |
3014 | else if (!spf && len - offset > 1) | |
3015 | offset += 2 + buffer[offset+1]; | |
3016 | else { | |
b2bff6ce MP |
3017 | sd_first_printk(KERN_ERR, sdkp, |
3018 | "Incomplete mode " | |
3019 | "parameter data\n"); | |
0bcaa111 LT |
3020 | goto defaults; |
3021 | } | |
3022 | } | |
48970800 AV |
3023 | } |
3024 | ||
c4da1205 MK |
3025 | sd_first_printk(KERN_WARNING, sdkp, |
3026 | "No Caching mode page found\n"); | |
984f1733 AS |
3027 | goto defaults; |
3028 | ||
0bcaa111 | 3029 | Page_found: |
631e8a13 AV |
3030 | if (modepage == 8) { |
3031 | sdkp->WCE = ((buffer[offset + 2] & 0x04) != 0); | |
3032 | sdkp->RCD = ((buffer[offset + 2] & 0x01) != 0); | |
3033 | } else { | |
3034 | sdkp->WCE = ((buffer[offset + 2] & 0x01) == 0); | |
3035 | sdkp->RCD = 0; | |
3036 | } | |
1da177e4 | 3037 | |
007365ad | 3038 | sdkp->DPOFUA = (data.device_specific & 0x10) != 0; |
b14bf2d0 AS |
3039 | if (sdp->broken_fua) { |
3040 | sd_first_printk(KERN_NOTICE, sdkp, "Disabling FUA\n"); | |
3041 | sdkp->DPOFUA = 0; | |
26f28197 DLM |
3042 | } else if (sdkp->DPOFUA && !sdkp->device->use_10_for_rw && |
3043 | !sdkp->device->use_16_for_rw) { | |
b2bff6ce | 3044 | sd_first_printk(KERN_NOTICE, sdkp, |
e73aec82 | 3045 | "Uses READ/WRITE(6), disabling FUA\n"); |
007365ad TH |
3046 | sdkp->DPOFUA = 0; |
3047 | } | |
3048 | ||
2eefd57b SRT |
3049 | /* No cache flush allowed for write protected devices */ |
3050 | if (sdkp->WCE && sdkp->write_prot) | |
3051 | sdkp->WCE = 0; | |
3052 | ||
70a9b873 MP |
3053 | if (sdkp->first_scan || old_wce != sdkp->WCE || |
3054 | old_rcd != sdkp->RCD || old_dpofua != sdkp->DPOFUA) | |
3055 | sd_printk(KERN_NOTICE, sdkp, | |
3056 | "Write cache: %s, read cache: %s, %s\n", | |
3057 | sdkp->WCE ? "enabled" : "disabled", | |
3058 | sdkp->RCD ? "disabled" : "enabled", | |
3059 | sdkp->DPOFUA ? "supports DPO and FUA" | |
3060 | : "doesn't support DPO or FUA"); | |
1da177e4 LT |
3061 | |
3062 | return; | |
3063 | } | |
3064 | ||
3065 | bad_sense: | |
add2c24d | 3066 | if (res == -EIO && scsi_sense_valid(&sshdr) && |
1da177e4 LT |
3067 | sshdr.sense_key == ILLEGAL_REQUEST && |
3068 | sshdr.asc == 0x24 && sshdr.ascq == 0x0) | |
e73aec82 | 3069 | /* Invalid field in CDB */ |
b2bff6ce | 3070 | sd_first_printk(KERN_NOTICE, sdkp, "Cache data unavailable\n"); |
1da177e4 | 3071 | else |
b2bff6ce MP |
3072 | sd_first_printk(KERN_ERR, sdkp, |
3073 | "Asking for cache data failed\n"); | |
1da177e4 LT |
3074 | |
3075 | defaults: | |
b81478d8 | 3076 | if (sdp->wce_default_on) { |
b2bff6ce MP |
3077 | sd_first_printk(KERN_NOTICE, sdkp, |
3078 | "Assuming drive cache: write back\n"); | |
b81478d8 NJ |
3079 | sdkp->WCE = 1; |
3080 | } else { | |
c4da1205 | 3081 | sd_first_printk(KERN_WARNING, sdkp, |
b2bff6ce | 3082 | "Assuming drive cache: write through\n"); |
b81478d8 NJ |
3083 | sdkp->WCE = 0; |
3084 | } | |
1da177e4 | 3085 | sdkp->RCD = 0; |
48970800 | 3086 | sdkp->DPOFUA = 0; |
1da177e4 LT |
3087 | } |
3088 | ||
4f53138f BVA |
3089 | static bool sd_is_perm_stream(struct scsi_disk *sdkp, unsigned int stream_id) |
3090 | { | |
3091 | u8 cdb[16] = { SERVICE_ACTION_IN_16, SAI_GET_STREAM_STATUS }; | |
3092 | struct { | |
3093 | struct scsi_stream_status_header h; | |
3094 | struct scsi_stream_status s; | |
3095 | } buf; | |
3096 | struct scsi_device *sdev = sdkp->device; | |
3097 | struct scsi_sense_hdr sshdr; | |
3098 | const struct scsi_exec_args exec_args = { | |
3099 | .sshdr = &sshdr, | |
3100 | }; | |
3101 | int res; | |
3102 | ||
3103 | put_unaligned_be16(stream_id, &cdb[4]); | |
3104 | put_unaligned_be32(sizeof(buf), &cdb[10]); | |
3105 | ||
3106 | res = scsi_execute_cmd(sdev, cdb, REQ_OP_DRV_IN, &buf, sizeof(buf), | |
3107 | SD_TIMEOUT, sdkp->max_retries, &exec_args); | |
3108 | if (res < 0) | |
3109 | return false; | |
3110 | if (scsi_status_is_check_condition(res) && scsi_sense_valid(&sshdr)) | |
3111 | sd_print_sense_hdr(sdkp, &sshdr); | |
3112 | if (res) | |
3113 | return false; | |
3114 | if (get_unaligned_be32(&buf.h.len) < sizeof(struct scsi_stream_status)) | |
3115 | return false; | |
3116 | return buf.h.stream_status[0].perm; | |
3117 | } | |
3118 | ||
3119 | static void sd_read_io_hints(struct scsi_disk *sdkp, unsigned char *buffer) | |
3120 | { | |
3121 | struct scsi_device *sdp = sdkp->device; | |
3122 | const struct scsi_io_group_descriptor *desc, *start, *end; | |
3123 | struct scsi_sense_hdr sshdr; | |
3124 | struct scsi_mode_data data; | |
3125 | int res; | |
3126 | ||
3127 | res = scsi_mode_sense(sdp, /*dbd=*/0x8, /*modepage=*/0x0a, | |
3128 | /*subpage=*/0x05, buffer, SD_BUF_SIZE, SD_TIMEOUT, | |
3129 | sdkp->max_retries, &data, &sshdr); | |
3130 | if (res < 0) | |
3131 | return; | |
3132 | start = (void *)buffer + data.header_length + 16; | |
3133 | end = (void *)buffer + ALIGN_DOWN(data.header_length + data.length, | |
3134 | sizeof(*end)); | |
3135 | /* | |
3136 | * From "SBC-5 Constrained Streams with Data Lifetimes": Device severs | |
3137 | * should assign the lowest numbered stream identifiers to permanent | |
3138 | * streams. | |
3139 | */ | |
3140 | for (desc = start; desc < end; desc++) | |
3141 | if (!desc->st_enble || !sd_is_perm_stream(sdkp, desc - start)) | |
3142 | break; | |
3143 | sdkp->permanent_stream_count = desc - start; | |
3144 | if (sdkp->rscs && sdkp->permanent_stream_count < 2) | |
3145 | sd_printk(KERN_INFO, sdkp, | |
3146 | "Unexpected: RSCS has been set and the permanent stream count is %u\n", | |
3147 | sdkp->permanent_stream_count); | |
3148 | else if (sdkp->permanent_stream_count) | |
3149 | sd_printk(KERN_INFO, sdkp, "permanent stream count = %d\n", | |
3150 | sdkp->permanent_stream_count); | |
3151 | } | |
3152 | ||
e0597d70 MP |
3153 | /* |
3154 | * The ATO bit indicates whether the DIF application tag is available | |
3155 | * for use by the operating system. | |
3156 | */ | |
439d77f7 | 3157 | static void sd_read_app_tag_own(struct scsi_disk *sdkp, unsigned char *buffer) |
e0597d70 MP |
3158 | { |
3159 | int res, offset; | |
3160 | struct scsi_device *sdp = sdkp->device; | |
3161 | struct scsi_mode_data data; | |
3162 | struct scsi_sense_hdr sshdr; | |
3163 | ||
89d94756 | 3164 | if (sdp->type != TYPE_DISK && sdp->type != TYPE_ZBC) |
e0597d70 MP |
3165 | return; |
3166 | ||
3167 | if (sdkp->protection_type == 0) | |
3168 | return; | |
3169 | ||
a6cdc35f | 3170 | res = scsi_mode_sense(sdp, 1, 0x0a, 0, buffer, 36, SD_TIMEOUT, |
0610959f | 3171 | sdkp->max_retries, &data, &sshdr); |
e0597d70 | 3172 | |
8793613d | 3173 | if (res < 0 || !data.header_length || |
e0597d70 | 3174 | data.length < 6) { |
b2bff6ce | 3175 | sd_first_printk(KERN_WARNING, sdkp, |
e0597d70 MP |
3176 | "getting Control mode page failed, assume no ATO\n"); |
3177 | ||
add2c24d | 3178 | if (res == -EIO && scsi_sense_valid(&sshdr)) |
e0597d70 MP |
3179 | sd_print_sense_hdr(sdkp, &sshdr); |
3180 | ||
3181 | return; | |
3182 | } | |
3183 | ||
3184 | offset = data.header_length + data.block_descriptor_length; | |
3185 | ||
3186 | if ((buffer[offset] & 0x3f) != 0x0a) { | |
b2bff6ce | 3187 | sd_first_printk(KERN_ERR, sdkp, "ATO Got wrong page\n"); |
e0597d70 MP |
3188 | return; |
3189 | } | |
3190 | ||
3191 | if ((buffer[offset + 5] & 0x80) == 0) | |
3192 | return; | |
3193 | ||
3194 | sdkp->ATO = 1; | |
3195 | ||
3196 | return; | |
3197 | } | |
3198 | ||
d11b6916 MP |
3199 | /** |
3200 | * sd_read_block_limits - Query disk device for preferred I/O sizes. | |
7529fbb0 | 3201 | * @sdkp: disk to query |
d11b6916 MP |
3202 | */ |
3203 | static void sd_read_block_limits(struct scsi_disk *sdkp) | |
3204 | { | |
7fb019c4 | 3205 | struct scsi_vpd *vpd; |
d11b6916 | 3206 | |
7fb019c4 | 3207 | rcu_read_lock(); |
d11b6916 | 3208 | |
7fb019c4 MP |
3209 | vpd = rcu_dereference(sdkp->device->vpd_pgb0); |
3210 | if (!vpd || vpd->len < 16) | |
e3deec09 | 3211 | goto out; |
ca369d51 | 3212 | |
631669a2 | 3213 | sdkp->min_xfer_blocks = get_unaligned_be16(&vpd->data[6]); |
7fb019c4 MP |
3214 | sdkp->max_xfer_blocks = get_unaligned_be32(&vpd->data[8]); |
3215 | sdkp->opt_xfer_blocks = get_unaligned_be32(&vpd->data[12]); | |
d11b6916 | 3216 | |
7fb019c4 | 3217 | if (vpd->len >= 64) { |
c98a0eb0 | 3218 | unsigned int lba_count, desc_count; |
e339c1a7 | 3219 | |
7fb019c4 | 3220 | sdkp->max_ws_blocks = (u32)get_unaligned_be64(&vpd->data[36]); |
e339c1a7 | 3221 | |
c98a0eb0 | 3222 | if (!sdkp->lbpme) |
045d3fe7 | 3223 | goto out; |
045d3fe7 | 3224 | |
7fb019c4 MP |
3225 | lba_count = get_unaligned_be32(&vpd->data[20]); |
3226 | desc_count = get_unaligned_be32(&vpd->data[24]); | |
045d3fe7 | 3227 | |
c98a0eb0 MP |
3228 | if (lba_count && desc_count) |
3229 | sdkp->max_unmap_blocks = lba_count; | |
e339c1a7 | 3230 | |
7fb019c4 | 3231 | sdkp->unmap_granularity = get_unaligned_be32(&vpd->data[28]); |
e339c1a7 | 3232 | |
7fb019c4 | 3233 | if (vpd->data[32] & 0x80) |
c98a0eb0 | 3234 | sdkp->unmap_alignment = |
7fb019c4 | 3235 | get_unaligned_be32(&vpd->data[32]) & ~(1 << 31); |
c98a0eb0 MP |
3236 | |
3237 | if (!sdkp->lbpvpd) { /* LBP VPD page not provided */ | |
3238 | ||
3239 | if (sdkp->max_unmap_blocks) | |
3240 | sd_config_discard(sdkp, SD_LBP_UNMAP); | |
3241 | else | |
3242 | sd_config_discard(sdkp, SD_LBP_WS16); | |
3243 | ||
3244 | } else { /* LBP VPD page tells us what to use */ | |
bcd069bb | 3245 | if (sdkp->lbpu && sdkp->max_unmap_blocks) |
e461338b MP |
3246 | sd_config_discard(sdkp, SD_LBP_UNMAP); |
3247 | else if (sdkp->lbpws) | |
c98a0eb0 MP |
3248 | sd_config_discard(sdkp, SD_LBP_WS16); |
3249 | else if (sdkp->lbpws10) | |
3250 | sd_config_discard(sdkp, SD_LBP_WS10); | |
3251 | else | |
3252 | sd_config_discard(sdkp, SD_LBP_DISABLE); | |
3253 | } | |
e339c1a7 MP |
3254 | } |
3255 | ||
e3deec09 | 3256 | out: |
7fb019c4 | 3257 | rcu_read_unlock(); |
d11b6916 MP |
3258 | } |
3259 | ||
96b171d6 BVA |
3260 | /* Parse the Block Limits Extension VPD page (0xb7) */ |
3261 | static void sd_read_block_limits_ext(struct scsi_disk *sdkp) | |
3262 | { | |
3263 | struct scsi_vpd *vpd; | |
3264 | ||
3265 | rcu_read_lock(); | |
3266 | vpd = rcu_dereference(sdkp->device->vpd_pgb7); | |
3267 | if (vpd && vpd->len >= 2) | |
3268 | sdkp->rscs = vpd->data[5] & 1; | |
3269 | rcu_read_unlock(); | |
3270 | } | |
3271 | ||
3821d768 MP |
3272 | /** |
3273 | * sd_read_block_characteristics - Query block dev. characteristics | |
7529fbb0 | 3274 | * @sdkp: disk to query |
3821d768 MP |
3275 | */ |
3276 | static void sd_read_block_characteristics(struct scsi_disk *sdkp) | |
3277 | { | |
89d94756 | 3278 | struct request_queue *q = sdkp->disk->queue; |
7fb019c4 | 3279 | struct scsi_vpd *vpd; |
3821d768 MP |
3280 | u16 rot; |
3281 | ||
7fb019c4 MP |
3282 | rcu_read_lock(); |
3283 | vpd = rcu_dereference(sdkp->device->vpd_pgb1); | |
3821d768 | 3284 | |
7fb019c4 MP |
3285 | if (!vpd || vpd->len < 8) { |
3286 | rcu_read_unlock(); | |
3287 | return; | |
3288 | } | |
3821d768 | 3289 | |
7fb019c4 | 3290 | rot = get_unaligned_be16(&vpd->data[4]); |
7437bb73 | 3291 | sdkp->zoned = (vpd->data[8] >> 4) & 3; |
7fb019c4 | 3292 | rcu_read_unlock(); |
3821d768 | 3293 | |
b277da0a | 3294 | if (rot == 1) { |
8b904b5b BVA |
3295 | blk_queue_flag_set(QUEUE_FLAG_NONROT, q); |
3296 | blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, q); | |
b277da0a | 3297 | } |
3821d768 | 3298 | |
d73e93b4 CH |
3299 | |
3300 | #ifdef CONFIG_BLK_DEV_ZONED /* sd_probe rejects ZBD devices early otherwise */ | |
68af412c | 3301 | if (sdkp->device->type == TYPE_ZBC) { |
288b3271 | 3302 | /* |
7437bb73 CH |
3303 | * Host-managed. |
3304 | */ | |
d73e93b4 | 3305 | disk_set_zoned(sdkp->disk); |
7437bb73 CH |
3306 | |
3307 | /* | |
3308 | * Per ZBC and ZAC specifications, writes in sequential write | |
3309 | * required zones of host-managed devices must be aligned to | |
3310 | * the device physical block size. | |
288b3271 | 3311 | */ |
288b3271 | 3312 | blk_queue_zone_write_granularity(q, sdkp->physical_block_size); |
68af412c | 3313 | } else { |
7437bb73 | 3314 | /* |
6945a180 | 3315 | * Host-aware devices are treated as conventional. |
7437bb73 | 3316 | */ |
6945a180 | 3317 | WARN_ON_ONCE(blk_queue_is_zoned(q)); |
68af412c | 3318 | } |
d73e93b4 | 3319 | #endif /* CONFIG_BLK_DEV_ZONED */ |
27ba3e8f DLM |
3320 | |
3321 | if (!sdkp->first_scan) | |
7fb019c4 | 3322 | return; |
27ba3e8f | 3323 | |
7437bb73 CH |
3324 | if (blk_queue_is_zoned(q)) |
3325 | sd_printk(KERN_NOTICE, sdkp, "Host-managed zoned block device\n"); | |
3326 | else if (sdkp->zoned == 1) | |
3327 | sd_printk(KERN_NOTICE, sdkp, "Host-aware SMR disk used as regular disk\n"); | |
3328 | else if (sdkp->zoned == 2) | |
3329 | sd_printk(KERN_NOTICE, sdkp, "Drive-managed SMR disk\n"); | |
3821d768 MP |
3330 | } |
3331 | ||
045d3fe7 | 3332 | /** |
c98a0eb0 | 3333 | * sd_read_block_provisioning - Query provisioning VPD page |
7529fbb0 | 3334 | * @sdkp: disk to query |
045d3fe7 | 3335 | */ |
c98a0eb0 | 3336 | static void sd_read_block_provisioning(struct scsi_disk *sdkp) |
045d3fe7 | 3337 | { |
7fb019c4 | 3338 | struct scsi_vpd *vpd; |
045d3fe7 | 3339 | |
c98a0eb0 | 3340 | if (sdkp->lbpme == 0) |
045d3fe7 MP |
3341 | return; |
3342 | ||
7fb019c4 MP |
3343 | rcu_read_lock(); |
3344 | vpd = rcu_dereference(sdkp->device->vpd_pgb2); | |
045d3fe7 | 3345 | |
7fb019c4 MP |
3346 | if (!vpd || vpd->len < 8) { |
3347 | rcu_read_unlock(); | |
3348 | return; | |
3349 | } | |
045d3fe7 | 3350 | |
c98a0eb0 | 3351 | sdkp->lbpvpd = 1; |
7fb019c4 MP |
3352 | sdkp->lbpu = (vpd->data[5] >> 7) & 1; /* UNMAP */ |
3353 | sdkp->lbpws = (vpd->data[5] >> 6) & 1; /* WRITE SAME(16) w/ UNMAP */ | |
3354 | sdkp->lbpws10 = (vpd->data[5] >> 5) & 1; /* WRITE SAME(10) w/ UNMAP */ | |
3355 | rcu_read_unlock(); | |
045d3fe7 MP |
3356 | } |
3357 | ||
5db44863 MP |
3358 | static void sd_read_write_same(struct scsi_disk *sdkp, unsigned char *buffer) |
3359 | { | |
66c28f97 MP |
3360 | struct scsi_device *sdev = sdkp->device; |
3361 | ||
54b2b50c MP |
3362 | if (sdev->host->no_write_same) { |
3363 | sdev->no_write_same = 1; | |
3364 | ||
3365 | return; | |
3366 | } | |
3367 | ||
152e52fb | 3368 | if (scsi_report_opcode(sdev, buffer, SD_BUF_SIZE, INQUIRY, 0) < 0) { |
e38d9e83 | 3369 | struct scsi_vpd *vpd; |
af73623f | 3370 | |
66c28f97 MP |
3371 | sdev->no_report_opcodes = 1; |
3372 | ||
3373 | /* Disable WRITE SAME if REPORT SUPPORTED OPERATION | |
3374 | * CODES is unsupported and the device has an ATA | |
3375 | * Information VPD page (SAT). | |
3376 | */ | |
e38d9e83 MP |
3377 | rcu_read_lock(); |
3378 | vpd = rcu_dereference(sdev->vpd_pg89); | |
3379 | if (vpd) | |
66c28f97 | 3380 | sdev->no_write_same = 1; |
e38d9e83 | 3381 | rcu_read_unlock(); |
66c28f97 MP |
3382 | } |
3383 | ||
152e52fb | 3384 | if (scsi_report_opcode(sdev, buffer, SD_BUF_SIZE, WRITE_SAME_16, 0) == 1) |
5db44863 | 3385 | sdkp->ws16 = 1; |
66c28f97 | 3386 | |
152e52fb | 3387 | if (scsi_report_opcode(sdev, buffer, SD_BUF_SIZE, WRITE_SAME, 0) == 1) |
66c28f97 | 3388 | sdkp->ws10 = 1; |
5db44863 MP |
3389 | } |
3390 | ||
d80210f2 CH |
3391 | static void sd_read_security(struct scsi_disk *sdkp, unsigned char *buffer) |
3392 | { | |
3393 | struct scsi_device *sdev = sdkp->device; | |
3394 | ||
3395 | if (!sdev->security_supported) | |
3396 | return; | |
3397 | ||
3398 | if (scsi_report_opcode(sdev, buffer, SD_BUF_SIZE, | |
152e52fb | 3399 | SECURITY_PROTOCOL_IN, 0) == 1 && |
d80210f2 | 3400 | scsi_report_opcode(sdev, buffer, SD_BUF_SIZE, |
152e52fb | 3401 | SECURITY_PROTOCOL_OUT, 0) == 1) |
d80210f2 CH |
3402 | sdkp->security = 1; |
3403 | } | |
3404 | ||
e815d365 DLM |
3405 | static inline sector_t sd64_to_sectors(struct scsi_disk *sdkp, u8 *buf) |
3406 | { | |
3407 | return logical_to_sectors(sdkp->device, get_unaligned_be64(buf)); | |
3408 | } | |
3409 | ||
3410 | /** | |
3411 | * sd_read_cpr - Query concurrent positioning ranges | |
3412 | * @sdkp: disk to query | |
3413 | */ | |
3414 | static void sd_read_cpr(struct scsi_disk *sdkp) | |
3415 | { | |
3416 | struct blk_independent_access_ranges *iars = NULL; | |
3417 | unsigned char *buffer = NULL; | |
3418 | unsigned int nr_cpr = 0; | |
3419 | int i, vpd_len, buf_len = SD_BUF_SIZE; | |
3420 | u8 *desc; | |
3421 | ||
3422 | /* | |
3423 | * We need to have the capacity set first for the block layer to be | |
3424 | * able to check the ranges. | |
3425 | */ | |
3426 | if (sdkp->first_scan) | |
3427 | return; | |
3428 | ||
3429 | if (!sdkp->capacity) | |
3430 | goto out; | |
3431 | ||
3432 | /* | |
3433 | * Concurrent Positioning Ranges VPD: there can be at most 256 ranges, | |
3434 | * leading to a maximum page size of 64 + 256*32 bytes. | |
3435 | */ | |
3436 | buf_len = 64 + 256*32; | |
3437 | buffer = kmalloc(buf_len, GFP_KERNEL); | |
3438 | if (!buffer || scsi_get_vpd_page(sdkp->device, 0xb9, buffer, buf_len)) | |
3439 | goto out; | |
3440 | ||
3441 | /* We must have at least a 64B header and one 32B range descriptor */ | |
f92de9d1 | 3442 | vpd_len = get_unaligned_be16(&buffer[2]) + 4; |
e815d365 DLM |
3443 | if (vpd_len > buf_len || vpd_len < 64 + 32 || (vpd_len & 31)) { |
3444 | sd_printk(KERN_ERR, sdkp, | |
3445 | "Invalid Concurrent Positioning Ranges VPD page\n"); | |
3446 | goto out; | |
3447 | } | |
3448 | ||
3449 | nr_cpr = (vpd_len - 64) / 32; | |
3450 | if (nr_cpr == 1) { | |
3451 | nr_cpr = 0; | |
3452 | goto out; | |
3453 | } | |
3454 | ||
3455 | iars = disk_alloc_independent_access_ranges(sdkp->disk, nr_cpr); | |
3456 | if (!iars) { | |
3457 | nr_cpr = 0; | |
3458 | goto out; | |
3459 | } | |
3460 | ||
3461 | desc = &buffer[64]; | |
3462 | for (i = 0; i < nr_cpr; i++, desc += 32) { | |
3463 | if (desc[0] != i) { | |
3464 | sd_printk(KERN_ERR, sdkp, | |
3465 | "Invalid Concurrent Positioning Range number\n"); | |
3466 | nr_cpr = 0; | |
3467 | break; | |
3468 | } | |
3469 | ||
3470 | iars->ia_range[i].sector = sd64_to_sectors(sdkp, desc + 8); | |
3471 | iars->ia_range[i].nr_sectors = sd64_to_sectors(sdkp, desc + 16); | |
3472 | } | |
3473 | ||
3474 | out: | |
3475 | disk_set_independent_access_ranges(sdkp->disk, iars); | |
3476 | if (nr_cpr && sdkp->nr_actuators != nr_cpr) { | |
3477 | sd_printk(KERN_NOTICE, sdkp, | |
3478 | "%u concurrent positioning ranges\n", nr_cpr); | |
3479 | sdkp->nr_actuators = nr_cpr; | |
3480 | } | |
3481 | ||
3482 | kfree(buffer); | |
3483 | } | |
3484 | ||
631669a2 MP |
3485 | static bool sd_validate_min_xfer_size(struct scsi_disk *sdkp) |
3486 | { | |
3487 | struct scsi_device *sdp = sdkp->device; | |
3488 | unsigned int min_xfer_bytes = | |
3489 | logical_to_bytes(sdp, sdkp->min_xfer_blocks); | |
3490 | ||
3491 | if (sdkp->min_xfer_blocks == 0) | |
3492 | return false; | |
3493 | ||
3494 | if (min_xfer_bytes & (sdkp->physical_block_size - 1)) { | |
3495 | sd_first_printk(KERN_WARNING, sdkp, | |
3496 | "Preferred minimum I/O size %u bytes not a " \ | |
3497 | "multiple of physical block size (%u bytes)\n", | |
3498 | min_xfer_bytes, sdkp->physical_block_size); | |
3499 | sdkp->min_xfer_blocks = 0; | |
3500 | return false; | |
3501 | } | |
3502 | ||
3503 | sd_first_printk(KERN_INFO, sdkp, "Preferred minimum I/O size %u bytes\n", | |
3504 | min_xfer_bytes); | |
3505 | return true; | |
3506 | } | |
3507 | ||
a83da8a4 MP |
3508 | /* |
3509 | * Determine the device's preferred I/O size for reads and writes | |
3510 | * unless the reported value is unreasonably small, large, not a | |
3511 | * multiple of the physical block size, or simply garbage. | |
3512 | */ | |
3513 | static bool sd_validate_opt_xfer_size(struct scsi_disk *sdkp, | |
3514 | unsigned int dev_max) | |
3515 | { | |
3516 | struct scsi_device *sdp = sdkp->device; | |
3517 | unsigned int opt_xfer_bytes = | |
3518 | logical_to_bytes(sdp, sdkp->opt_xfer_blocks); | |
631669a2 MP |
3519 | unsigned int min_xfer_bytes = |
3520 | logical_to_bytes(sdp, sdkp->min_xfer_blocks); | |
a83da8a4 | 3521 | |
1d5de5bd MP |
3522 | if (sdkp->opt_xfer_blocks == 0) |
3523 | return false; | |
3524 | ||
a83da8a4 MP |
3525 | if (sdkp->opt_xfer_blocks > dev_max) { |
3526 | sd_first_printk(KERN_WARNING, sdkp, | |
3527 | "Optimal transfer size %u logical blocks " \ | |
3528 | "> dev_max (%u logical blocks)\n", | |
3529 | sdkp->opt_xfer_blocks, dev_max); | |
3530 | return false; | |
3531 | } | |
3532 | ||
3533 | if (sdkp->opt_xfer_blocks > SD_DEF_XFER_BLOCKS) { | |
3534 | sd_first_printk(KERN_WARNING, sdkp, | |
3535 | "Optimal transfer size %u logical blocks " \ | |
3536 | "> sd driver limit (%u logical blocks)\n", | |
3537 | sdkp->opt_xfer_blocks, SD_DEF_XFER_BLOCKS); | |
3538 | return false; | |
3539 | } | |
3540 | ||
3541 | if (opt_xfer_bytes < PAGE_SIZE) { | |
3542 | sd_first_printk(KERN_WARNING, sdkp, | |
3543 | "Optimal transfer size %u bytes < " \ | |
3544 | "PAGE_SIZE (%u bytes)\n", | |
3545 | opt_xfer_bytes, (unsigned int)PAGE_SIZE); | |
3546 | return false; | |
3547 | } | |
3548 | ||
631669a2 MP |
3549 | if (min_xfer_bytes && opt_xfer_bytes % min_xfer_bytes) { |
3550 | sd_first_printk(KERN_WARNING, sdkp, | |
3551 | "Optimal transfer size %u bytes not a " \ | |
3552 | "multiple of preferred minimum block " \ | |
3553 | "size (%u bytes)\n", | |
3554 | opt_xfer_bytes, min_xfer_bytes); | |
3555 | return false; | |
3556 | } | |
3557 | ||
a83da8a4 MP |
3558 | if (opt_xfer_bytes & (sdkp->physical_block_size - 1)) { |
3559 | sd_first_printk(KERN_WARNING, sdkp, | |
3560 | "Optimal transfer size %u bytes not a " \ | |
3561 | "multiple of physical block size (%u bytes)\n", | |
3562 | opt_xfer_bytes, sdkp->physical_block_size); | |
3563 | return false; | |
3564 | } | |
3565 | ||
3566 | sd_first_printk(KERN_INFO, sdkp, "Optimal transfer size %u bytes\n", | |
3567 | opt_xfer_bytes); | |
3568 | return true; | |
3569 | } | |
3570 | ||
321da3dc MP |
3571 | static void sd_read_block_zero(struct scsi_disk *sdkp) |
3572 | { | |
3573 | unsigned int buf_len = sdkp->device->sector_size; | |
3574 | char *buffer, cmd[10] = { }; | |
3575 | ||
3576 | buffer = kmalloc(buf_len, GFP_KERNEL); | |
3577 | if (!buffer) | |
3578 | return; | |
3579 | ||
3580 | cmd[0] = READ_10; | |
3581 | put_unaligned_be32(0, &cmd[2]); /* Logical block address 0 */ | |
3582 | put_unaligned_be16(1, &cmd[7]); /* Transfer 1 logical block */ | |
3583 | ||
3584 | scsi_execute_cmd(sdkp->device, cmd, REQ_OP_DRV_IN, buffer, buf_len, | |
3585 | SD_TIMEOUT, sdkp->max_retries, NULL); | |
3586 | kfree(buffer); | |
3587 | } | |
3588 | ||
1da177e4 LT |
3589 | /** |
3590 | * sd_revalidate_disk - called the first time a new disk is seen, | |
3591 | * performs disk spin up, read_capacity, etc. | |
3592 | * @disk: struct gendisk we care about | |
3593 | **/ | |
3594 | static int sd_revalidate_disk(struct gendisk *disk) | |
3595 | { | |
3596 | struct scsi_disk *sdkp = scsi_disk(disk); | |
3597 | struct scsi_device *sdp = sdkp->device; | |
ca369d51 | 3598 | struct request_queue *q = sdkp->disk->queue; |
89d94756 | 3599 | sector_t old_capacity = sdkp->capacity; |
1da177e4 | 3600 | unsigned char *buffer; |
ca369d51 | 3601 | unsigned int dev_max, rw_max; |
1da177e4 | 3602 | |
fa0d34be MP |
3603 | SCSI_LOG_HLQUEUE(3, sd_printk(KERN_INFO, sdkp, |
3604 | "sd_revalidate_disk\n")); | |
1da177e4 LT |
3605 | |
3606 | /* | |
3607 | * If the device is offline, don't try and read capacity or any | |
3608 | * of the other niceties. | |
3609 | */ | |
3610 | if (!scsi_device_online(sdp)) | |
3611 | goto out; | |
3612 | ||
a6123f14 | 3613 | buffer = kmalloc(SD_BUF_SIZE, GFP_KERNEL); |
1da177e4 | 3614 | if (!buffer) { |
e73aec82 MP |
3615 | sd_printk(KERN_WARNING, sdkp, "sd_revalidate_disk: Memory " |
3616 | "allocation failure.\n"); | |
ea73a9f2 | 3617 | goto out; |
1da177e4 LT |
3618 | } |
3619 | ||
e73aec82 | 3620 | sd_spinup_disk(sdkp); |
1da177e4 LT |
3621 | |
3622 | /* | |
3623 | * Without media there is no reason to ask; moreover, some devices | |
3624 | * react badly if we do. | |
3625 | */ | |
3626 | if (sdkp->media_present) { | |
e73aec82 | 3627 | sd_read_capacity(sdkp, buffer); |
321da3dc MP |
3628 | /* |
3629 | * Some USB/UAS devices return generic values for mode pages | |
3630 | * until the media has been accessed. Trigger a READ operation | |
3631 | * to force the device to populate mode pages. | |
3632 | */ | |
3633 | if (sdp->read_before_ms) | |
3634 | sd_read_block_zero(sdkp); | |
e4a05698 JB |
3635 | /* |
3636 | * set the default to rotational. All non-rotational devices | |
3637 | * support the block characteristics VPD page, which will | |
3638 | * cause this to be updated correctly and any device which | |
3639 | * doesn't support it should be treated as rotational. | |
3640 | */ | |
3641 | blk_queue_flag_clear(QUEUE_FLAG_NONROT, q); | |
3642 | blk_queue_flag_set(QUEUE_FLAG_ADD_RANDOM, q); | |
3643 | ||
5ddfe085 | 3644 | if (scsi_device_supports_vpd(sdp)) { |
c98a0eb0 | 3645 | sd_read_block_provisioning(sdkp); |
ffd4bc2a | 3646 | sd_read_block_limits(sdkp); |
96b171d6 | 3647 | sd_read_block_limits_ext(sdkp); |
ffd4bc2a | 3648 | sd_read_block_characteristics(sdkp); |
89d94756 | 3649 | sd_zbc_read_zones(sdkp, buffer); |
1700714b | 3650 | sd_read_cpr(sdkp); |
ffd4bc2a MP |
3651 | } |
3652 | ||
89d94756 HR |
3653 | sd_print_capacity(sdkp, old_capacity); |
3654 | ||
e73aec82 MP |
3655 | sd_read_write_protect_flag(sdkp, buffer); |
3656 | sd_read_cache_type(sdkp, buffer); | |
4f53138f | 3657 | sd_read_io_hints(sdkp, buffer); |
e0597d70 | 3658 | sd_read_app_tag_own(sdkp, buffer); |
5db44863 | 3659 | sd_read_write_same(sdkp, buffer); |
d80210f2 | 3660 | sd_read_security(sdkp, buffer); |
1e029397 | 3661 | sd_config_protection(sdkp); |
1da177e4 | 3662 | } |
461d4e90 TH |
3663 | |
3664 | /* | |
3665 | * We now have all cache related info, determine how we deal | |
4913efe4 | 3666 | * with flush requests. |
461d4e90 | 3667 | */ |
cb2fb68d | 3668 | sd_set_flush_flag(sdkp); |
461d4e90 | 3669 | |
ca369d51 MP |
3670 | /* Initial block count limit based on CDB TRANSFER LENGTH field size. */ |
3671 | dev_max = sdp->use_16_for_rw ? SD_MAX_XFER_BLOCKS : SD_DEF_XFER_BLOCKS; | |
3672 | ||
3673 | /* Some devices report a maximum block count for READ/WRITE requests. */ | |
3674 | dev_max = min_not_zero(dev_max, sdkp->max_xfer_blocks); | |
3675 | q->limits.max_dev_sectors = logical_to_sectors(sdp, dev_max); | |
3676 | ||
631669a2 MP |
3677 | if (sd_validate_min_xfer_size(sdkp)) |
3678 | blk_queue_io_min(sdkp->disk->queue, | |
3679 | logical_to_bytes(sdp, sdkp->min_xfer_blocks)); | |
3680 | else | |
3681 | blk_queue_io_min(sdkp->disk->queue, 0); | |
3682 | ||
a83da8a4 | 3683 | if (sd_validate_opt_xfer_size(sdkp, dev_max)) { |
6b7e9cde MP |
3684 | q->limits.io_opt = logical_to_bytes(sdp, sdkp->opt_xfer_blocks); |
3685 | rw_max = logical_to_sectors(sdp, sdkp->opt_xfer_blocks); | |
ea697a8b MP |
3686 | } else { |
3687 | q->limits.io_opt = 0; | |
67804145 | 3688 | rw_max = min_not_zero(logical_to_sectors(sdp, dev_max), |
d6b9f4e6 | 3689 | (sector_t)BLK_DEF_MAX_SECTORS_CAP); |
ea697a8b | 3690 | } |
3a9794d3 | 3691 | |
c9337ad4 JG |
3692 | /* |
3693 | * Limit default to SCSI host optimal sector limit if set. There may be | |
3694 | * an impact on performance for when the size of a request exceeds this | |
3695 | * host limit. | |
3696 | */ | |
608128d3 JG |
3697 | rw_max = min_not_zero(rw_max, sdp->host->opt_sectors); |
3698 | ||
77082ca5 MP |
3699 | /* Do not exceed controller limit */ |
3700 | rw_max = min(rw_max, queue_max_hw_sectors(q)); | |
3701 | ||
3702 | /* | |
3703 | * Only update max_sectors if previously unset or if the current value | |
3704 | * exceeds the capabilities of the hardware. | |
3705 | */ | |
3706 | if (sdkp->first_scan || | |
3707 | q->limits.max_sectors > q->limits.max_dev_sectors || | |
3708 | q->limits.max_sectors > q->limits.max_hw_sectors) | |
3709 | q->limits.max_sectors = rw_max; | |
3710 | ||
3711 | sdkp->first_scan = 0; | |
4f258a46 | 3712 | |
449f4ec9 | 3713 | set_capacity_and_notify(disk, logical_to_sectors(sdp, sdkp->capacity)); |
5db44863 | 3714 | sd_config_write_same(sdkp); |
1da177e4 LT |
3715 | kfree(buffer); |
3716 | ||
a3d8a257 DLM |
3717 | /* |
3718 | * For a zoned drive, revalidating the zones can be done only once | |
3719 | * the gendisk capacity is set. So if this fails, set back the gendisk | |
3720 | * capacity to 0. | |
3721 | */ | |
3722 | if (sd_zbc_revalidate_zones(sdkp)) | |
449f4ec9 | 3723 | set_capacity_and_notify(disk, 0); |
a3d8a257 | 3724 | |
1da177e4 LT |
3725 | out: |
3726 | return 0; | |
3727 | } | |
3728 | ||
72ec24bd TH |
3729 | /** |
3730 | * sd_unlock_native_capacity - unlock native capacity | |
3731 | * @disk: struct gendisk to set capacity for | |
3732 | * | |
3733 | * Block layer calls this function if it detects that partitions | |
3734 | * on @disk reach beyond the end of the device. If the SCSI host | |
3735 | * implements ->unlock_native_capacity() method, it's invoked to | |
3736 | * give it a chance to adjust the device capacity. | |
3737 | * | |
3738 | * CONTEXT: | |
3739 | * Defined by block layer. Might sleep. | |
3740 | */ | |
3741 | static void sd_unlock_native_capacity(struct gendisk *disk) | |
3742 | { | |
3743 | struct scsi_device *sdev = scsi_disk(disk)->device; | |
3744 | ||
3745 | if (sdev->host->hostt->unlock_native_capacity) | |
3746 | sdev->host->hostt->unlock_native_capacity(sdev); | |
3747 | } | |
3748 | ||
3e1a7ff8 TH |
3749 | /** |
3750 | * sd_format_disk_name - format disk name | |
3751 | * @prefix: name prefix - ie. "sd" for SCSI disks | |
3752 | * @index: index of the disk to format name for | |
3753 | * @buf: output buffer | |
3754 | * @buflen: length of the output buffer | |
3755 | * | |
3756 | * SCSI disk names starts at sda. The 26th device is sdz and the | |
3757 | * 27th is sdaa. The last one for two lettered suffix is sdzz | |
3758 | * which is followed by sdaaa. | |
3759 | * | |
3760 | * This is basically 26 base counting with one extra 'nil' entry | |
3ad2f3fb | 3761 | * at the beginning from the second digit on and can be |
3e1a7ff8 TH |
3762 | * determined using similar method as 26 base conversion with the |
3763 | * index shifted -1 after each digit is computed. | |
3764 | * | |
3765 | * CONTEXT: | |
3766 | * Don't care. | |
3767 | * | |
3768 | * RETURNS: | |
3769 | * 0 on success, -errno on failure. | |
3770 | */ | |
3771 | static int sd_format_disk_name(char *prefix, int index, char *buf, int buflen) | |
3772 | { | |
3773 | const int base = 'z' - 'a' + 1; | |
3774 | char *begin = buf + strlen(prefix); | |
3775 | char *end = buf + buflen; | |
3776 | char *p; | |
3777 | int unit; | |
3778 | ||
3779 | p = end - 1; | |
3780 | *p = '\0'; | |
3781 | unit = base; | |
3782 | do { | |
3783 | if (p == begin) | |
3784 | return -EINVAL; | |
3785 | *--p = 'a' + (index % unit); | |
3786 | index = (index / unit) - 1; | |
3787 | } while (index >= 0); | |
3788 | ||
3789 | memmove(begin, p, end - p); | |
3790 | memcpy(buf, prefix, strlen(prefix)); | |
3791 | ||
3792 | return 0; | |
3793 | } | |
3794 | ||
1da177e4 LT |
3795 | /** |
3796 | * sd_probe - called during driver initialization and whenever a | |
3797 | * new scsi device is attached to the system. It is called once | |
3798 | * for each scsi device (not just disks) present. | |
3799 | * @dev: pointer to device object | |
3800 | * | |
3801 | * Returns 0 if successful (or not interested in this scsi device | |
3802 | * (e.g. scanner)); 1 when there is an error. | |
3803 | * | |
3804 | * Note: this function is invoked from the scsi mid-level. | |
3805 | * This function sets up the mapping between a given | |
3806 | * <host,channel,id,lun> (found in sdp) and new device name | |
3807 | * (e.g. /dev/sda). More precisely it is the block device major | |
3808 | * and minor number that is chosen here. | |
3809 | * | |
2db93ce8 PU |
3810 | * Assume sd_probe is not re-entrant (for time being) |
3811 | * Also think about sd_probe() and sd_remove() running coincidentally. | |
1da177e4 LT |
3812 | **/ |
3813 | static int sd_probe(struct device *dev) | |
3814 | { | |
3815 | struct scsi_device *sdp = to_scsi_device(dev); | |
3816 | struct scsi_disk *sdkp; | |
3817 | struct gendisk *gd; | |
439d77f7 | 3818 | int index; |
1da177e4 LT |
3819 | int error; |
3820 | ||
6fe8c1db | 3821 | scsi_autopm_get_device(sdp); |
1da177e4 | 3822 | error = -ENODEV; |
89d94756 HR |
3823 | if (sdp->type != TYPE_DISK && |
3824 | sdp->type != TYPE_ZBC && | |
3825 | sdp->type != TYPE_MOD && | |
3826 | sdp->type != TYPE_RBC) | |
1da177e4 LT |
3827 | goto out; |
3828 | ||
bf1b4659 DLM |
3829 | if (!IS_ENABLED(CONFIG_BLK_DEV_ZONED) && sdp->type == TYPE_ZBC) { |
3830 | sdev_printk(KERN_WARNING, sdp, | |
3831 | "Unsupported ZBC host-managed device.\n"); | |
89d94756 | 3832 | goto out; |
bf1b4659 DLM |
3833 | } |
3834 | ||
9ccfc756 | 3835 | SCSI_LOG_HLQUEUE(3, sdev_printk(KERN_INFO, sdp, |
2db93ce8 | 3836 | "sd_probe\n")); |
1da177e4 LT |
3837 | |
3838 | error = -ENOMEM; | |
24669f75 | 3839 | sdkp = kzalloc(sizeof(*sdkp), GFP_KERNEL); |
1da177e4 LT |
3840 | if (!sdkp) |
3841 | goto out; | |
3842 | ||
6f8191fd CH |
3843 | gd = blk_mq_alloc_disk_for_queue(sdp->request_queue, |
3844 | &sd_bio_compl_lkclass); | |
1da177e4 | 3845 | if (!gd) |
c01228db | 3846 | goto out_free; |
1da177e4 | 3847 | |
94015080 MW |
3848 | index = ida_alloc(&sd_index_ida, GFP_KERNEL); |
3849 | if (index < 0) { | |
21208ae5 | 3850 | sdev_printk(KERN_WARNING, sdp, "sd_probe: memory exhausted.\n"); |
1da177e4 | 3851 | goto out_put; |
1a03ae0f MR |
3852 | } |
3853 | ||
3e1a7ff8 | 3854 | error = sd_format_disk_name("sd", index, gd->disk_name, DISK_NAME_LEN); |
21208ae5 DK |
3855 | if (error) { |
3856 | sdev_printk(KERN_WARNING, sdp, "SCSI disk (sd) name length exceeded.\n"); | |
f27bac27 | 3857 | goto out_free_index; |
21208ae5 | 3858 | } |
f27bac27 | 3859 | |
1da177e4 | 3860 | sdkp->device = sdp; |
1da177e4 LT |
3861 | sdkp->disk = gd; |
3862 | sdkp->index = index; | |
0610959f | 3863 | sdkp->max_retries = SD_MAX_RETRIES; |
409f3499 | 3864 | atomic_set(&sdkp->openers, 0); |
9e1a1537 | 3865 | atomic_set(&sdkp->device->ioerr_cnt, 0); |
1da177e4 | 3866 | |
601e7638 JB |
3867 | if (!sdp->request_queue->rq_timeout) { |
3868 | if (sdp->type != TYPE_MOD) | |
3869 | blk_queue_rq_timeout(sdp->request_queue, SD_TIMEOUT); | |
3870 | else | |
3871 | blk_queue_rq_timeout(sdp->request_queue, | |
3872 | SD_MOD_TIMEOUT); | |
3873 | } | |
3874 | ||
fad45c30 CH |
3875 | device_initialize(&sdkp->disk_dev); |
3876 | sdkp->disk_dev.parent = get_device(dev); | |
3877 | sdkp->disk_dev.class = &sd_disk_class; | |
3878 | dev_set_name(&sdkp->disk_dev, "%s", dev_name(dev)); | |
601e7638 | 3879 | |
fad45c30 | 3880 | error = device_add(&sdkp->disk_dev); |
265dfe8e | 3881 | if (error) { |
fad45c30 | 3882 | put_device(&sdkp->disk_dev); |
265dfe8e ML |
3883 | goto out; |
3884 | } | |
601e7638 | 3885 | |
478a8a05 | 3886 | dev_set_drvdata(dev, sdkp); |
601e7638 | 3887 | |
82a54da6 BVA |
3888 | gd->major = sd_major((index & 0xf0) >> 4); |
3889 | gd->first_minor = ((index & 0xf) << 4) | (index & 0xfff00); | |
a58bd768 | 3890 | gd->minors = SD_MINORS; |
82a54da6 BVA |
3891 | |
3892 | gd->fops = &sd_fops; | |
e7f76552 | 3893 | gd->private_data = sdkp; |
82a54da6 BVA |
3894 | |
3895 | /* defaults, until the device tells us otherwise */ | |
3896 | sdp->sector_size = 512; | |
3897 | sdkp->capacity = 0; | |
3898 | sdkp->media_present = 1; | |
3899 | sdkp->write_prot = 0; | |
3900 | sdkp->cache_override = 0; | |
3901 | sdkp->WCE = 0; | |
3902 | sdkp->RCD = 0; | |
3903 | sdkp->ATO = 0; | |
3904 | sdkp->first_scan = 1; | |
3905 | sdkp->max_medium_access_timeouts = SD_MAX_MEDIUM_TIMEOUTS; | |
3906 | ||
3907 | sd_revalidate_disk(gd); | |
3908 | ||
82a54da6 BVA |
3909 | if (sdp->removable) { |
3910 | gd->flags |= GENHD_FL_REMOVABLE; | |
3911 | gd->events |= DISK_EVENT_MEDIA_CHANGE; | |
3912 | gd->event_flags = DISK_EVENT_FLAG_POLL | DISK_EVENT_FLAG_UEVENT; | |
3913 | } | |
3914 | ||
3915 | blk_pm_runtime_init(sdp->request_queue, dev); | |
c74f8056 SC |
3916 | if (sdp->rpm_autosuspend) { |
3917 | pm_runtime_set_autosuspend_delay(dev, | |
4380e64a | 3918 | sdp->host->rpm_autosuspend_delay); |
c74f8056 | 3919 | } |
2a7a891f LC |
3920 | |
3921 | error = device_add_disk(dev, gd, NULL); | |
3922 | if (error) { | |
fad45c30 | 3923 | put_device(&sdkp->disk_dev); |
7274ce05 | 3924 | put_disk(gd); |
2a7a891f LC |
3925 | goto out; |
3926 | } | |
3927 | ||
82a54da6 | 3928 | if (sdkp->security) { |
0610959f | 3929 | sdkp->opal_dev = init_opal_dev(sdkp, &sd_sec_submit); |
82a54da6 BVA |
3930 | if (sdkp->opal_dev) |
3931 | sd_printk(KERN_NOTICE, sdkp, "supports TCG Opal\n"); | |
3932 | } | |
3933 | ||
3934 | sd_printk(KERN_NOTICE, sdkp, "Attached SCSI %sdisk\n", | |
3935 | sdp->removable ? "removable " : ""); | |
3936 | scsi_autopm_put_device(sdp); | |
1da177e4 LT |
3937 | |
3938 | return 0; | |
3939 | ||
f27bac27 | 3940 | out_free_index: |
94015080 | 3941 | ida_free(&sd_index_ida, index); |
6bdaa1f1 | 3942 | out_put: |
1da177e4 | 3943 | put_disk(gd); |
f170396c CIK |
3944 | out_free: |
3945 | kfree(sdkp); | |
6bdaa1f1 | 3946 | out: |
6fe8c1db | 3947 | scsi_autopm_put_device(sdp); |
1da177e4 LT |
3948 | return error; |
3949 | } | |
3950 | ||
3951 | /** | |
3952 | * sd_remove - called whenever a scsi disk (previously recognized by | |
3953 | * sd_probe) is detached from the system. It is called (potentially | |
3954 | * multiple times) during sd module unload. | |
f2a3313d | 3955 | * @dev: pointer to device object |
1da177e4 LT |
3956 | * |
3957 | * Note: this function is invoked from the scsi mid-level. | |
3958 | * This function potentially frees up a device name (e.g. /dev/sdc) | |
3959 | * that could be re-used by a subsequent sd_probe(). | |
3960 | * This function is not called when the built-in sd driver is "exit-ed". | |
3961 | **/ | |
3962 | static int sd_remove(struct device *dev) | |
3963 | { | |
9c63f7f6 | 3964 | struct scsi_disk *sdkp = dev_get_drvdata(dev); |
1da177e4 | 3965 | |
478a8a05 AS |
3966 | scsi_autopm_get_device(sdkp->device); |
3967 | ||
fad45c30 | 3968 | device_del(&sdkp->disk_dev); |
1da177e4 | 3969 | del_gendisk(sdkp->disk); |
99398d20 DLM |
3970 | if (!sdkp->suspended) |
3971 | sd_shutdown(dev); | |
39b7f1e2 | 3972 | |
9c63f7f6 | 3973 | put_disk(sdkp->disk); |
1da177e4 LT |
3974 | return 0; |
3975 | } | |
3976 | ||
ee959b00 | 3977 | static void scsi_disk_release(struct device *dev) |
1da177e4 | 3978 | { |
ee959b00 | 3979 | struct scsi_disk *sdkp = to_scsi_disk(dev); |
c14a5726 | 3980 | |
94015080 | 3981 | ida_free(&sd_index_ida, sdkp->index); |
30c4fdc3 | 3982 | sd_zbc_free_zone_info(sdkp); |
c76c46fa | 3983 | put_device(&sdkp->device->sdev_gendev); |
534cf52a | 3984 | free_opal_dev(sdkp->opal_dev); |
5795eb44 | 3985 | |
1da177e4 LT |
3986 | kfree(sdkp); |
3987 | } | |
3988 | ||
cc5d2c8c | 3989 | static int sd_start_stop_device(struct scsi_disk *sdkp, int start) |
c3c94c5a TH |
3990 | { |
3991 | unsigned char cmd[6] = { START_STOP }; /* START_VALID */ | |
785538bf | 3992 | struct scsi_sense_hdr sshdr; |
af16cd63 MC |
3993 | const struct scsi_exec_args exec_args = { |
3994 | .sshdr = &sshdr, | |
3995 | .req_flags = BLK_MQ_REQ_PM, | |
3996 | }; | |
cc5d2c8c | 3997 | struct scsi_device *sdp = sdkp->device; |
785538bf | 3998 | int res; |
c3c94c5a TH |
3999 | |
4000 | if (start) | |
4001 | cmd[4] |= 1; /* START */ | |
4002 | ||
d2886ea3 SR |
4003 | if (sdp->start_stop_pwr_cond) |
4004 | cmd[4] |= start ? 1 << 4 : 3 << 4; /* Active or Standby */ | |
4005 | ||
c3c94c5a TH |
4006 | if (!scsi_device_online(sdp)) |
4007 | return -ENODEV; | |
4008 | ||
af16cd63 MC |
4009 | res = scsi_execute_cmd(sdp, cmd, REQ_OP_DRV_IN, NULL, 0, SD_TIMEOUT, |
4010 | sdkp->max_retries, &exec_args); | |
785538bf BVA |
4011 | if (res) { |
4012 | sd_print_result(sdkp, "Start/Stop Unit failed", res); | |
4013 | if (res > 0 && scsi_sense_valid(&sshdr)) { | |
4014 | sd_print_sense_hdr(sdkp, &sshdr); | |
4015 | /* 0x3a is medium not present */ | |
4016 | if (sshdr.asc == 0x3a) | |
4017 | res = 0; | |
4018 | } | |
4019 | } | |
c3c94c5a | 4020 | |
785538bf BVA |
4021 | /* SCSI error codes must not go to the generic layer */ |
4022 | if (res) | |
4023 | return -EIO; | |
4024 | ||
4025 | return 0; | |
c3c94c5a TH |
4026 | } |
4027 | ||
1da177e4 LT |
4028 | /* |
4029 | * Send a SYNCHRONIZE CACHE instruction down to the device through | |
4030 | * the normal SCSI command structure. Wait for the command to | |
4031 | * complete. | |
4032 | */ | |
4033 | static void sd_shutdown(struct device *dev) | |
4034 | { | |
3d9a1f53 | 4035 | struct scsi_disk *sdkp = dev_get_drvdata(dev); |
1da177e4 LT |
4036 | |
4037 | if (!sdkp) | |
4038 | return; /* this can happen */ | |
4039 | ||
54f57588 | 4040 | if (pm_runtime_suspended(dev)) |
3d9a1f53 | 4041 | return; |
54f57588 | 4042 | |
95897910 | 4043 | if (sdkp->WCE && sdkp->media_present) { |
e73aec82 | 4044 | sd_printk(KERN_NOTICE, sdkp, "Synchronizing SCSI cache\n"); |
3b834863 | 4045 | sd_sync_cache(sdkp); |
39b7f1e2 | 4046 | } |
c3c94c5a | 4047 | |
24eca2dc DLM |
4048 | if ((system_state != SYSTEM_RESTART && |
4049 | sdkp->device->manage_system_start_stop) || | |
4050 | (system_state == SYSTEM_POWER_OFF && | |
4051 | sdkp->device->manage_shutdown)) { | |
cc5d2c8c JB |
4052 | sd_printk(KERN_NOTICE, sdkp, "Stopping disk\n"); |
4053 | sd_start_stop_device(sdkp, 0); | |
c3c94c5a | 4054 | } |
39b7f1e2 | 4055 | } |
1da177e4 | 4056 | |
3cc2ffe5 DLM |
4057 | static inline bool sd_do_start_stop(struct scsi_device *sdev, bool runtime) |
4058 | { | |
4059 | return (sdev->manage_system_start_stop && !runtime) || | |
4060 | (sdev->manage_runtime_start_stop && runtime); | |
4061 | } | |
4062 | ||
4063 | static int sd_suspend_common(struct device *dev, bool runtime) | |
c3c94c5a | 4064 | { |
3d9a1f53 | 4065 | struct scsi_disk *sdkp = dev_get_drvdata(dev); |
09ff92fe | 4066 | int ret = 0; |
c3c94c5a | 4067 | |
13b43891 AS |
4068 | if (!sdkp) /* E.g.: runtime suspend following sd_remove() */ |
4069 | return 0; | |
c3c94c5a | 4070 | |
95897910 | 4071 | if (sdkp->WCE && sdkp->media_present) { |
af4edb1d AH |
4072 | if (!sdkp->device->silence_suspend) |
4073 | sd_printk(KERN_NOTICE, sdkp, "Synchronizing SCSI cache\n"); | |
3b834863 MC |
4074 | ret = sd_sync_cache(sdkp); |
4075 | /* ignore OFFLINE device */ | |
4076 | if (ret == -ENODEV) | |
4077 | return 0; | |
4fa83244 | 4078 | |
3b834863 MC |
4079 | if (ret) |
4080 | return ret; | |
c3c94c5a TH |
4081 | } |
4082 | ||
3cc2ffe5 | 4083 | if (sd_do_start_stop(sdkp->device, runtime)) { |
af4edb1d AH |
4084 | if (!sdkp->device->silence_suspend) |
4085 | sd_printk(KERN_NOTICE, sdkp, "Stopping disk\n"); | |
95897910 | 4086 | /* an error is not worth aborting a system sleep */ |
cc5d2c8c | 4087 | ret = sd_start_stop_device(sdkp, 0); |
3cc2ffe5 | 4088 | if (!runtime) |
95897910 | 4089 | ret = 0; |
c3c94c5a TH |
4090 | } |
4091 | ||
99398d20 DLM |
4092 | if (!ret) |
4093 | sdkp->suspended = true; | |
4094 | ||
09ff92fe | 4095 | return ret; |
c3c94c5a TH |
4096 | } |
4097 | ||
95897910 ON |
4098 | static int sd_suspend_system(struct device *dev) |
4099 | { | |
9131bff6 BVA |
4100 | if (pm_runtime_suspended(dev)) |
4101 | return 0; | |
4102 | ||
3cc2ffe5 | 4103 | return sd_suspend_common(dev, false); |
95897910 ON |
4104 | } |
4105 | ||
4106 | static int sd_suspend_runtime(struct device *dev) | |
4107 | { | |
3cc2ffe5 | 4108 | return sd_suspend_common(dev, true); |
95897910 ON |
4109 | } |
4110 | ||
3cc2ffe5 | 4111 | static int sd_resume(struct device *dev, bool runtime) |
c3c94c5a | 4112 | { |
3d9a1f53 | 4113 | struct scsi_disk *sdkp = dev_get_drvdata(dev); |
c4367ac8 | 4114 | int ret; |
c3c94c5a | 4115 | |
13b43891 AS |
4116 | if (!sdkp) /* E.g.: runtime resume at the start of sd_probe() */ |
4117 | return 0; | |
4118 | ||
99398d20 DLM |
4119 | if (!sd_do_start_stop(sdkp->device, runtime)) { |
4120 | sdkp->suspended = false; | |
3d9a1f53 | 4121 | return 0; |
99398d20 | 4122 | } |
c3c94c5a | 4123 | |
c4367ac8 DLM |
4124 | sd_printk(KERN_NOTICE, sdkp, "Starting disk\n"); |
4125 | ret = sd_start_stop_device(sdkp, 1); | |
99398d20 | 4126 | if (!ret) { |
d80210f2 | 4127 | opal_unlock_from_suspend(sdkp->opal_dev); |
99398d20 DLM |
4128 | sdkp->suspended = false; |
4129 | } | |
4130 | ||
d80210f2 | 4131 | return ret; |
c3c94c5a TH |
4132 | } |
4133 | ||
1c957532 BVA |
4134 | static int sd_resume_system(struct device *dev) |
4135 | { | |
b09d7f8f DLM |
4136 | if (pm_runtime_suspended(dev)) { |
4137 | struct scsi_disk *sdkp = dev_get_drvdata(dev); | |
4138 | struct scsi_device *sdp = sdkp ? sdkp->device : NULL; | |
4139 | ||
4140 | if (sdp && sdp->force_runtime_start_on_system_start) | |
4141 | pm_request_resume(dev); | |
4142 | ||
9131bff6 | 4143 | return 0; |
b09d7f8f | 4144 | } |
9131bff6 | 4145 | |
3cc2ffe5 | 4146 | return sd_resume(dev, false); |
1c957532 BVA |
4147 | } |
4148 | ||
ed4246d3 MK |
4149 | static int sd_resume_runtime(struct device *dev) |
4150 | { | |
4151 | struct scsi_disk *sdkp = dev_get_drvdata(dev); | |
85374b63 MC |
4152 | struct scsi_device *sdp; |
4153 | ||
4154 | if (!sdkp) /* E.g.: runtime resume at the start of sd_probe() */ | |
4155 | return 0; | |
4156 | ||
4157 | sdp = sdkp->device; | |
ed4246d3 MK |
4158 | |
4159 | if (sdp->ignore_media_change) { | |
4160 | /* clear the device's sense data */ | |
4161 | static const u8 cmd[10] = { REQUEST_SENSE }; | |
af16cd63 MC |
4162 | const struct scsi_exec_args exec_args = { |
4163 | .req_flags = BLK_MQ_REQ_PM, | |
4164 | }; | |
ed4246d3 | 4165 | |
af16cd63 MC |
4166 | if (scsi_execute_cmd(sdp, cmd, REQ_OP_DRV_IN, NULL, 0, |
4167 | sdp->request_queue->rq_timeout, 1, | |
4168 | &exec_args)) | |
ed4246d3 MK |
4169 | sd_printk(KERN_NOTICE, sdkp, |
4170 | "Failed to clear sense data\n"); | |
4171 | } | |
4172 | ||
3cc2ffe5 | 4173 | return sd_resume(dev, true); |
ed4246d3 MK |
4174 | } |
4175 | ||
efcf965a BVA |
4176 | static const struct dev_pm_ops sd_pm_ops = { |
4177 | .suspend = sd_suspend_system, | |
4178 | .resume = sd_resume_system, | |
4179 | .poweroff = sd_suspend_system, | |
4180 | .restore = sd_resume_system, | |
4181 | .runtime_suspend = sd_suspend_runtime, | |
4182 | .runtime_resume = sd_resume_runtime, | |
4183 | }; | |
4184 | ||
4185 | static struct scsi_driver sd_template = { | |
4186 | .gendrv = { | |
4187 | .name = "sd", | |
efcf965a BVA |
4188 | .probe = sd_probe, |
4189 | .probe_type = PROBE_PREFER_ASYNCHRONOUS, | |
4190 | .remove = sd_remove, | |
4191 | .shutdown = sd_shutdown, | |
4192 | .pm = &sd_pm_ops, | |
4193 | }, | |
4194 | .rescan = sd_rescan, | |
4195 | .init_command = sd_init_command, | |
4196 | .uninit_command = sd_uninit_command, | |
4197 | .done = sd_done, | |
4198 | .eh_action = sd_eh_action, | |
4199 | .eh_reset = sd_eh_reset, | |
4200 | }; | |
4201 | ||
1da177e4 LT |
4202 | /** |
4203 | * init_sd - entry point for this driver (both when built in or when | |
4204 | * a module). | |
4205 | * | |
4206 | * Note: this function registers this driver with the scsi mid-level. | |
4207 | **/ | |
4208 | static int __init init_sd(void) | |
4209 | { | |
5e4009ba | 4210 | int majors = 0, i, err; |
1da177e4 LT |
4211 | |
4212 | SCSI_LOG_HLQUEUE(3, printk("init_sd: sd driver entry point\n")); | |
4213 | ||
0761df9c | 4214 | for (i = 0; i < SD_MAJORS; i++) { |
996e509b | 4215 | if (__register_blkdev(sd_major(i), "sd", sd_default_probe)) |
0761df9c HR |
4216 | continue; |
4217 | majors++; | |
0761df9c | 4218 | } |
1da177e4 LT |
4219 | |
4220 | if (!majors) | |
4221 | return -ENODEV; | |
4222 | ||
5e4009ba JG |
4223 | err = class_register(&sd_disk_class); |
4224 | if (err) | |
4225 | goto err_out; | |
6bdaa1f1 | 4226 | |
61cce6f6 JA |
4227 | sd_page_pool = mempool_create_page_pool(SD_MEMPOOL_SIZE, 0); |
4228 | if (!sd_page_pool) { | |
4229 | printk(KERN_ERR "sd: can't init discard page pool\n"); | |
4230 | err = -ENOMEM; | |
2b379516 | 4231 | goto err_out_class; |
61cce6f6 JA |
4232 | } |
4233 | ||
afd5e34b JD |
4234 | err = scsi_register_driver(&sd_template.gendrv); |
4235 | if (err) | |
4236 | goto err_out_driver; | |
4237 | ||
5e4009ba JG |
4238 | return 0; |
4239 | ||
afd5e34b | 4240 | err_out_driver: |
61cce6f6 | 4241 | mempool_destroy(sd_page_pool); |
5e4009ba JG |
4242 | err_out_class: |
4243 | class_unregister(&sd_disk_class); | |
4244 | err_out: | |
4245 | for (i = 0; i < SD_MAJORS; i++) | |
4246 | unregister_blkdev(sd_major(i), "sd"); | |
4247 | return err; | |
1da177e4 LT |
4248 | } |
4249 | ||
4250 | /** | |
4251 | * exit_sd - exit point for this driver (when it is a module). | |
4252 | * | |
4253 | * Note: this function unregisters this driver from the scsi mid-level. | |
4254 | **/ | |
4255 | static void __exit exit_sd(void) | |
4256 | { | |
4257 | int i; | |
4258 | ||
4259 | SCSI_LOG_HLQUEUE(3, printk("exit_sd: exiting sd driver\n")); | |
4260 | ||
afd5e34b | 4261 | scsi_unregister_driver(&sd_template.gendrv); |
61cce6f6 | 4262 | mempool_destroy(sd_page_pool); |
4e7392ec | 4263 | |
5e4009ba JG |
4264 | class_unregister(&sd_disk_class); |
4265 | ||
996e509b | 4266 | for (i = 0; i < SD_MAJORS; i++) |
1da177e4 LT |
4267 | unregister_blkdev(sd_major(i), "sd"); |
4268 | } | |
4269 | ||
1da177e4 LT |
4270 | module_init(init_sd); |
4271 | module_exit(exit_sd); | |
e73aec82 | 4272 | |
a35989a0 | 4273 | void sd_print_sense_hdr(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr) |
e73aec82 | 4274 | { |
21045519 HR |
4275 | scsi_print_sense_hdr(sdkp->device, |
4276 | sdkp->disk ? sdkp->disk->disk_name : NULL, sshdr); | |
e73aec82 MP |
4277 | } |
4278 | ||
a35989a0 | 4279 | void sd_print_result(const struct scsi_disk *sdkp, const char *msg, int result) |
e73aec82 | 4280 | { |
ef61329d | 4281 | const char *hb_string = scsi_hostbyte_string(result); |
ef61329d | 4282 | |
54c29086 | 4283 | if (hb_string) |
ef61329d HR |
4284 | sd_printk(KERN_INFO, sdkp, |
4285 | "%s: Result: hostbyte=%s driverbyte=%s\n", msg, | |
4286 | hb_string ? hb_string : "invalid", | |
54c29086 | 4287 | "DRIVER_OK"); |
ef61329d HR |
4288 | else |
4289 | sd_printk(KERN_INFO, sdkp, | |
54c29086 HR |
4290 | "%s: Result: hostbyte=0x%02x driverbyte=%s\n", |
4291 | msg, host_byte(result), "DRIVER_OK"); | |
e73aec82 | 4292 | } |