Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Block driver for media (i.e., flash cards) | |
3 | * | |
4 | * Copyright 2002 Hewlett-Packard Company | |
979ce720 | 5 | * Copyright 2005-2008 Pierre Ossman |
1da177e4 LT |
6 | * |
7 | * Use consistent with the GNU GPL is permitted, | |
8 | * provided that this copyright notice is | |
9 | * preserved in its entirety in all copies and derived works. | |
10 | * | |
11 | * HEWLETT-PACKARD COMPANY MAKES NO WARRANTIES, EXPRESSED OR IMPLIED, | |
12 | * AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS | |
13 | * FITNESS FOR ANY PARTICULAR PURPOSE. | |
14 | * | |
15 | * Many thanks to Alessandro Rubini and Jonathan Corbet! | |
16 | * | |
17 | * Author: Andrew Christian | |
18 | * 28 May 2002 | |
19 | */ | |
20 | #include <linux/moduleparam.h> | |
21 | #include <linux/module.h> | |
22 | #include <linux/init.h> | |
23 | ||
1da177e4 LT |
24 | #include <linux/kernel.h> |
25 | #include <linux/fs.h> | |
5a0e3ad6 | 26 | #include <linux/slab.h> |
1da177e4 LT |
27 | #include <linux/errno.h> |
28 | #include <linux/hdreg.h> | |
29 | #include <linux/kdev_t.h> | |
30 | #include <linux/blkdev.h> | |
a621aaed | 31 | #include <linux/mutex.h> |
ec5a19dd | 32 | #include <linux/scatterlist.h> |
a7bbb573 | 33 | #include <linux/string_helpers.h> |
cb87ea28 JC |
34 | #include <linux/delay.h> |
35 | #include <linux/capability.h> | |
36 | #include <linux/compat.h> | |
e94cfef6 | 37 | #include <linux/pm_runtime.h> |
1da177e4 | 38 | |
cb87ea28 | 39 | #include <linux/mmc/ioctl.h> |
1da177e4 | 40 | #include <linux/mmc/card.h> |
385e3227 | 41 | #include <linux/mmc/host.h> |
da7fbe58 PO |
42 | #include <linux/mmc/mmc.h> |
43 | #include <linux/mmc/sd.h> | |
1da177e4 | 44 | |
1da177e4 LT |
45 | #include <asm/uaccess.h> |
46 | ||
98ac2162 | 47 | #include "queue.h" |
1da177e4 | 48 | |
6b0b6285 | 49 | MODULE_ALIAS("mmc:block"); |
5e71b7a6 OJ |
50 | #ifdef MODULE_PARAM_PREFIX |
51 | #undef MODULE_PARAM_PREFIX | |
52 | #endif | |
53 | #define MODULE_PARAM_PREFIX "mmcblk." | |
54 | ||
6a7a6b45 AW |
55 | #define INAND_CMD38_ARG_EXT_CSD 113 |
56 | #define INAND_CMD38_ARG_ERASE 0x00 | |
57 | #define INAND_CMD38_ARG_TRIM 0x01 | |
58 | #define INAND_CMD38_ARG_SECERASE 0x80 | |
59 | #define INAND_CMD38_ARG_SECTRIM1 0x81 | |
60 | #define INAND_CMD38_ARG_SECTRIM2 0x88 | |
8fee476b | 61 | #define MMC_BLK_TIMEOUT_MS (10 * 60 * 1000) /* 10 minute timeout */ |
775a9362 ME |
62 | #define MMC_SANITIZE_REQ_TIMEOUT 240000 |
63 | #define MMC_EXTRACT_INDEX_FROM_ARG(x) ((x & 0x00FF0000) >> 16) | |
6a7a6b45 | 64 | |
ce39f9d1 SJ |
65 | #define mmc_req_rel_wr(req) (((req->cmd_flags & REQ_FUA) || \ |
66 | (req->cmd_flags & REQ_META)) && \ | |
67 | (rq_data_dir(req) == WRITE)) | |
68 | #define PACKED_CMD_VER 0x01 | |
69 | #define PACKED_CMD_WR 0x02 | |
70 | ||
5e71b7a6 | 71 | static DEFINE_MUTEX(block_mutex); |
6b0b6285 | 72 | |
1da177e4 | 73 | /* |
5e71b7a6 OJ |
74 | * The defaults come from config options but can be overriden by module |
75 | * or bootarg options. | |
1da177e4 | 76 | */ |
5e71b7a6 | 77 | static int perdev_minors = CONFIG_MMC_BLOCK_MINORS; |
1dff3144 | 78 | |
5e71b7a6 OJ |
79 | /* |
80 | * We've only got one major, so number of mmcblk devices is | |
a26eba61 BH |
81 | * limited to (1 << 20) / number of minors per device. It is also |
82 | * currently limited by the size of the static bitmaps below. | |
5e71b7a6 OJ |
83 | */ |
84 | static int max_devices; | |
85 | ||
a26eba61 BH |
86 | #define MAX_DEVICES 256 |
87 | ||
88 | /* TODO: Replace these with struct ida */ | |
89 | static DECLARE_BITMAP(dev_use, MAX_DEVICES); | |
90 | static DECLARE_BITMAP(name_use, MAX_DEVICES); | |
1da177e4 | 91 | |
1da177e4 LT |
92 | /* |
93 | * There is one mmc_blk_data per slot. | |
94 | */ | |
95 | struct mmc_blk_data { | |
96 | spinlock_t lock; | |
97 | struct gendisk *disk; | |
98 | struct mmc_queue queue; | |
371a689f | 99 | struct list_head part; |
1da177e4 | 100 | |
d0c97cfb AW |
101 | unsigned int flags; |
102 | #define MMC_BLK_CMD23 (1 << 0) /* Can do SET_BLOCK_COUNT for multiblock */ | |
103 | #define MMC_BLK_REL_WR (1 << 1) /* MMC Reliable write support */ | |
ce39f9d1 | 104 | #define MMC_BLK_PACKED_CMD (1 << 2) /* MMC packed command support */ |
d0c97cfb | 105 | |
1da177e4 | 106 | unsigned int usage; |
a6f6c96b | 107 | unsigned int read_only; |
371a689f | 108 | unsigned int part_type; |
f06c9153 | 109 | unsigned int name_idx; |
67716327 AH |
110 | unsigned int reset_done; |
111 | #define MMC_BLK_READ BIT(0) | |
112 | #define MMC_BLK_WRITE BIT(1) | |
113 | #define MMC_BLK_DISCARD BIT(2) | |
114 | #define MMC_BLK_SECDISCARD BIT(3) | |
371a689f AW |
115 | |
116 | /* | |
117 | * Only set in main mmc_blk_data associated | |
fc95e30b | 118 | * with mmc_card with dev_set_drvdata, and keeps |
371a689f AW |
119 | * track of the current selected device partition. |
120 | */ | |
121 | unsigned int part_curr; | |
122 | struct device_attribute force_ro; | |
add710ea JR |
123 | struct device_attribute power_ro_lock; |
124 | int area_type; | |
1da177e4 LT |
125 | }; |
126 | ||
a621aaed | 127 | static DEFINE_MUTEX(open_lock); |
1da177e4 | 128 | |
ce39f9d1 SJ |
129 | enum { |
130 | MMC_PACKED_NR_IDX = -1, | |
131 | MMC_PACKED_NR_ZERO, | |
132 | MMC_PACKED_NR_SINGLE, | |
133 | }; | |
134 | ||
5e71b7a6 OJ |
135 | module_param(perdev_minors, int, 0444); |
136 | MODULE_PARM_DESC(perdev_minors, "Minors numbers to allocate per device"); | |
137 | ||
8d1e977d LP |
138 | static inline int mmc_blk_part_switch(struct mmc_card *card, |
139 | struct mmc_blk_data *md); | |
140 | static int get_card_status(struct mmc_card *card, u32 *status, int retries); | |
141 | ||
ce39f9d1 SJ |
142 | static inline void mmc_blk_clear_packed(struct mmc_queue_req *mqrq) |
143 | { | |
144 | struct mmc_packed *packed = mqrq->packed; | |
145 | ||
146 | BUG_ON(!packed); | |
147 | ||
148 | mqrq->cmd_type = MMC_PACKED_NONE; | |
149 | packed->nr_entries = MMC_PACKED_NR_ZERO; | |
150 | packed->idx_failure = MMC_PACKED_NR_IDX; | |
151 | packed->retries = 0; | |
152 | packed->blocks = 0; | |
153 | } | |
154 | ||
1da177e4 LT |
155 | static struct mmc_blk_data *mmc_blk_get(struct gendisk *disk) |
156 | { | |
157 | struct mmc_blk_data *md; | |
158 | ||
a621aaed | 159 | mutex_lock(&open_lock); |
1da177e4 LT |
160 | md = disk->private_data; |
161 | if (md && md->usage == 0) | |
162 | md = NULL; | |
163 | if (md) | |
164 | md->usage++; | |
a621aaed | 165 | mutex_unlock(&open_lock); |
1da177e4 LT |
166 | |
167 | return md; | |
168 | } | |
169 | ||
371a689f AW |
170 | static inline int mmc_get_devidx(struct gendisk *disk) |
171 | { | |
172 | int devmaj = MAJOR(disk_devt(disk)); | |
173 | int devidx = MINOR(disk_devt(disk)) / perdev_minors; | |
174 | ||
175 | if (!devmaj) | |
176 | devidx = disk->first_minor / perdev_minors; | |
177 | return devidx; | |
178 | } | |
179 | ||
1da177e4 LT |
180 | static void mmc_blk_put(struct mmc_blk_data *md) |
181 | { | |
a621aaed | 182 | mutex_lock(&open_lock); |
1da177e4 LT |
183 | md->usage--; |
184 | if (md->usage == 0) { | |
371a689f | 185 | int devidx = mmc_get_devidx(md->disk); |
5fa83ce2 AH |
186 | blk_cleanup_queue(md->queue.queue); |
187 | ||
1dff3144 DW |
188 | __clear_bit(devidx, dev_use); |
189 | ||
1da177e4 | 190 | put_disk(md->disk); |
1da177e4 LT |
191 | kfree(md); |
192 | } | |
a621aaed | 193 | mutex_unlock(&open_lock); |
1da177e4 LT |
194 | } |
195 | ||
add710ea JR |
196 | static ssize_t power_ro_lock_show(struct device *dev, |
197 | struct device_attribute *attr, char *buf) | |
198 | { | |
199 | int ret; | |
200 | struct mmc_blk_data *md = mmc_blk_get(dev_to_disk(dev)); | |
201 | struct mmc_card *card = md->queue.card; | |
202 | int locked = 0; | |
203 | ||
204 | if (card->ext_csd.boot_ro_lock & EXT_CSD_BOOT_WP_B_PERM_WP_EN) | |
205 | locked = 2; | |
206 | else if (card->ext_csd.boot_ro_lock & EXT_CSD_BOOT_WP_B_PWR_WP_EN) | |
207 | locked = 1; | |
208 | ||
209 | ret = snprintf(buf, PAGE_SIZE, "%d\n", locked); | |
210 | ||
211 | return ret; | |
212 | } | |
213 | ||
214 | static ssize_t power_ro_lock_store(struct device *dev, | |
215 | struct device_attribute *attr, const char *buf, size_t count) | |
216 | { | |
217 | int ret; | |
218 | struct mmc_blk_data *md, *part_md; | |
219 | struct mmc_card *card; | |
220 | unsigned long set; | |
221 | ||
222 | if (kstrtoul(buf, 0, &set)) | |
223 | return -EINVAL; | |
224 | ||
225 | if (set != 1) | |
226 | return count; | |
227 | ||
228 | md = mmc_blk_get(dev_to_disk(dev)); | |
229 | card = md->queue.card; | |
230 | ||
e94cfef6 | 231 | mmc_get_card(card); |
add710ea JR |
232 | |
233 | ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_WP, | |
234 | card->ext_csd.boot_ro_lock | | |
235 | EXT_CSD_BOOT_WP_B_PWR_WP_EN, | |
236 | card->ext_csd.part_time); | |
237 | if (ret) | |
238 | pr_err("%s: Locking boot partition ro until next power on failed: %d\n", md->disk->disk_name, ret); | |
239 | else | |
240 | card->ext_csd.boot_ro_lock |= EXT_CSD_BOOT_WP_B_PWR_WP_EN; | |
241 | ||
e94cfef6 | 242 | mmc_put_card(card); |
add710ea JR |
243 | |
244 | if (!ret) { | |
245 | pr_info("%s: Locking boot partition ro until next power on\n", | |
246 | md->disk->disk_name); | |
247 | set_disk_ro(md->disk, 1); | |
248 | ||
249 | list_for_each_entry(part_md, &md->part, part) | |
250 | if (part_md->area_type == MMC_BLK_DATA_AREA_BOOT) { | |
251 | pr_info("%s: Locking boot partition ro until next power on\n", part_md->disk->disk_name); | |
252 | set_disk_ro(part_md->disk, 1); | |
253 | } | |
254 | } | |
255 | ||
256 | mmc_blk_put(md); | |
257 | return count; | |
258 | } | |
259 | ||
371a689f AW |
260 | static ssize_t force_ro_show(struct device *dev, struct device_attribute *attr, |
261 | char *buf) | |
262 | { | |
263 | int ret; | |
264 | struct mmc_blk_data *md = mmc_blk_get(dev_to_disk(dev)); | |
265 | ||
0031a98a | 266 | ret = snprintf(buf, PAGE_SIZE, "%d\n", |
371a689f AW |
267 | get_disk_ro(dev_to_disk(dev)) ^ |
268 | md->read_only); | |
269 | mmc_blk_put(md); | |
270 | return ret; | |
271 | } | |
272 | ||
273 | static ssize_t force_ro_store(struct device *dev, struct device_attribute *attr, | |
274 | const char *buf, size_t count) | |
275 | { | |
276 | int ret; | |
277 | char *end; | |
278 | struct mmc_blk_data *md = mmc_blk_get(dev_to_disk(dev)); | |
279 | unsigned long set = simple_strtoul(buf, &end, 0); | |
280 | if (end == buf) { | |
281 | ret = -EINVAL; | |
282 | goto out; | |
283 | } | |
284 | ||
285 | set_disk_ro(dev_to_disk(dev), set || md->read_only); | |
286 | ret = count; | |
287 | out: | |
288 | mmc_blk_put(md); | |
289 | return ret; | |
290 | } | |
291 | ||
a5a1561f | 292 | static int mmc_blk_open(struct block_device *bdev, fmode_t mode) |
1da177e4 | 293 | { |
a5a1561f | 294 | struct mmc_blk_data *md = mmc_blk_get(bdev->bd_disk); |
1da177e4 LT |
295 | int ret = -ENXIO; |
296 | ||
2a48fc0a | 297 | mutex_lock(&block_mutex); |
1da177e4 LT |
298 | if (md) { |
299 | if (md->usage == 2) | |
a5a1561f | 300 | check_disk_change(bdev); |
1da177e4 | 301 | ret = 0; |
a00fc090 | 302 | |
a5a1561f | 303 | if ((mode & FMODE_WRITE) && md->read_only) { |
70bb0896 | 304 | mmc_blk_put(md); |
a00fc090 | 305 | ret = -EROFS; |
70bb0896 | 306 | } |
1da177e4 | 307 | } |
2a48fc0a | 308 | mutex_unlock(&block_mutex); |
1da177e4 LT |
309 | |
310 | return ret; | |
311 | } | |
312 | ||
db2a144b | 313 | static void mmc_blk_release(struct gendisk *disk, fmode_t mode) |
1da177e4 | 314 | { |
a5a1561f | 315 | struct mmc_blk_data *md = disk->private_data; |
1da177e4 | 316 | |
2a48fc0a | 317 | mutex_lock(&block_mutex); |
1da177e4 | 318 | mmc_blk_put(md); |
2a48fc0a | 319 | mutex_unlock(&block_mutex); |
1da177e4 LT |
320 | } |
321 | ||
322 | static int | |
a885c8c4 | 323 | mmc_blk_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1da177e4 | 324 | { |
a885c8c4 CH |
325 | geo->cylinders = get_capacity(bdev->bd_disk) / (4 * 16); |
326 | geo->heads = 4; | |
327 | geo->sectors = 16; | |
328 | return 0; | |
1da177e4 LT |
329 | } |
330 | ||
cb87ea28 JC |
331 | struct mmc_blk_ioc_data { |
332 | struct mmc_ioc_cmd ic; | |
333 | unsigned char *buf; | |
334 | u64 buf_bytes; | |
335 | }; | |
336 | ||
337 | static struct mmc_blk_ioc_data *mmc_blk_ioctl_copy_from_user( | |
338 | struct mmc_ioc_cmd __user *user) | |
339 | { | |
340 | struct mmc_blk_ioc_data *idata; | |
341 | int err; | |
342 | ||
343 | idata = kzalloc(sizeof(*idata), GFP_KERNEL); | |
344 | if (!idata) { | |
345 | err = -ENOMEM; | |
aea253ec | 346 | goto out; |
cb87ea28 JC |
347 | } |
348 | ||
349 | if (copy_from_user(&idata->ic, user, sizeof(idata->ic))) { | |
350 | err = -EFAULT; | |
aea253ec | 351 | goto idata_err; |
cb87ea28 JC |
352 | } |
353 | ||
354 | idata->buf_bytes = (u64) idata->ic.blksz * idata->ic.blocks; | |
355 | if (idata->buf_bytes > MMC_IOC_MAX_BYTES) { | |
356 | err = -EOVERFLOW; | |
aea253ec | 357 | goto idata_err; |
cb87ea28 JC |
358 | } |
359 | ||
4d6144de JR |
360 | if (!idata->buf_bytes) |
361 | return idata; | |
362 | ||
cb87ea28 JC |
363 | idata->buf = kzalloc(idata->buf_bytes, GFP_KERNEL); |
364 | if (!idata->buf) { | |
365 | err = -ENOMEM; | |
aea253ec | 366 | goto idata_err; |
cb87ea28 JC |
367 | } |
368 | ||
369 | if (copy_from_user(idata->buf, (void __user *)(unsigned long) | |
370 | idata->ic.data_ptr, idata->buf_bytes)) { | |
371 | err = -EFAULT; | |
372 | goto copy_err; | |
373 | } | |
374 | ||
375 | return idata; | |
376 | ||
377 | copy_err: | |
378 | kfree(idata->buf); | |
aea253ec | 379 | idata_err: |
cb87ea28 | 380 | kfree(idata); |
aea253ec | 381 | out: |
cb87ea28 | 382 | return ERR_PTR(err); |
cb87ea28 JC |
383 | } |
384 | ||
8d1e977d LP |
385 | static int ioctl_rpmb_card_status_poll(struct mmc_card *card, u32 *status, |
386 | u32 retries_max) | |
387 | { | |
388 | int err; | |
389 | u32 retry_count = 0; | |
390 | ||
391 | if (!status || !retries_max) | |
392 | return -EINVAL; | |
393 | ||
394 | do { | |
395 | err = get_card_status(card, status, 5); | |
396 | if (err) | |
397 | break; | |
398 | ||
399 | if (!R1_STATUS(*status) && | |
400 | (R1_CURRENT_STATE(*status) != R1_STATE_PRG)) | |
401 | break; /* RPMB programming operation complete */ | |
402 | ||
403 | /* | |
404 | * Rechedule to give the MMC device a chance to continue | |
405 | * processing the previous command without being polled too | |
406 | * frequently. | |
407 | */ | |
408 | usleep_range(1000, 5000); | |
409 | } while (++retry_count < retries_max); | |
410 | ||
411 | if (retry_count == retries_max) | |
412 | err = -EPERM; | |
413 | ||
414 | return err; | |
415 | } | |
416 | ||
775a9362 ME |
417 | static int ioctl_do_sanitize(struct mmc_card *card) |
418 | { | |
419 | int err; | |
420 | ||
a2d1086d | 421 | if (!mmc_can_sanitize(card)) { |
775a9362 ME |
422 | pr_warn("%s: %s - SANITIZE is not supported\n", |
423 | mmc_hostname(card->host), __func__); | |
424 | err = -EOPNOTSUPP; | |
425 | goto out; | |
426 | } | |
427 | ||
428 | pr_debug("%s: %s - SANITIZE IN PROGRESS...\n", | |
429 | mmc_hostname(card->host), __func__); | |
430 | ||
431 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
432 | EXT_CSD_SANITIZE_START, 1, | |
433 | MMC_SANITIZE_REQ_TIMEOUT); | |
434 | ||
435 | if (err) | |
436 | pr_err("%s: %s - EXT_CSD_SANITIZE_START failed. err=%d\n", | |
437 | mmc_hostname(card->host), __func__, err); | |
438 | ||
439 | pr_debug("%s: %s - SANITIZE COMPLETED\n", mmc_hostname(card->host), | |
440 | __func__); | |
441 | out: | |
442 | return err; | |
443 | } | |
444 | ||
cb87ea28 JC |
445 | static int mmc_blk_ioctl_cmd(struct block_device *bdev, |
446 | struct mmc_ioc_cmd __user *ic_ptr) | |
447 | { | |
448 | struct mmc_blk_ioc_data *idata; | |
449 | struct mmc_blk_data *md; | |
450 | struct mmc_card *card; | |
451 | struct mmc_command cmd = {0}; | |
452 | struct mmc_data data = {0}; | |
ad5fd972 | 453 | struct mmc_request mrq = {NULL}; |
cb87ea28 JC |
454 | struct scatterlist sg; |
455 | int err; | |
8d1e977d LP |
456 | int is_rpmb = false; |
457 | u32 status = 0; | |
cb87ea28 JC |
458 | |
459 | /* | |
460 | * The caller must have CAP_SYS_RAWIO, and must be calling this on the | |
461 | * whole block device, not on a partition. This prevents overspray | |
462 | * between sibling partitions. | |
463 | */ | |
464 | if ((!capable(CAP_SYS_RAWIO)) || (bdev != bdev->bd_contains)) | |
465 | return -EPERM; | |
466 | ||
467 | idata = mmc_blk_ioctl_copy_from_user(ic_ptr); | |
468 | if (IS_ERR(idata)) | |
469 | return PTR_ERR(idata); | |
470 | ||
cb87ea28 JC |
471 | md = mmc_blk_get(bdev->bd_disk); |
472 | if (!md) { | |
473 | err = -EINVAL; | |
1c02f000 | 474 | goto cmd_err; |
cb87ea28 JC |
475 | } |
476 | ||
8d1e977d LP |
477 | if (md->area_type & MMC_BLK_DATA_AREA_RPMB) |
478 | is_rpmb = true; | |
479 | ||
cb87ea28 JC |
480 | card = md->queue.card; |
481 | if (IS_ERR(card)) { | |
482 | err = PTR_ERR(card); | |
483 | goto cmd_done; | |
484 | } | |
485 | ||
4d6144de JR |
486 | cmd.opcode = idata->ic.opcode; |
487 | cmd.arg = idata->ic.arg; | |
488 | cmd.flags = idata->ic.flags; | |
489 | ||
490 | if (idata->buf_bytes) { | |
491 | data.sg = &sg; | |
492 | data.sg_len = 1; | |
493 | data.blksz = idata->ic.blksz; | |
494 | data.blocks = idata->ic.blocks; | |
495 | ||
496 | sg_init_one(data.sg, idata->buf, idata->buf_bytes); | |
497 | ||
498 | if (idata->ic.write_flag) | |
499 | data.flags = MMC_DATA_WRITE; | |
500 | else | |
501 | data.flags = MMC_DATA_READ; | |
502 | ||
503 | /* data.flags must already be set before doing this. */ | |
504 | mmc_set_data_timeout(&data, card); | |
505 | ||
506 | /* Allow overriding the timeout_ns for empirical tuning. */ | |
507 | if (idata->ic.data_timeout_ns) | |
508 | data.timeout_ns = idata->ic.data_timeout_ns; | |
509 | ||
510 | if ((cmd.flags & MMC_RSP_R1B) == MMC_RSP_R1B) { | |
511 | /* | |
512 | * Pretend this is a data transfer and rely on the | |
513 | * host driver to compute timeout. When all host | |
514 | * drivers support cmd.cmd_timeout for R1B, this | |
515 | * can be changed to: | |
516 | * | |
517 | * mrq.data = NULL; | |
518 | * cmd.cmd_timeout = idata->ic.cmd_timeout_ms; | |
519 | */ | |
520 | data.timeout_ns = idata->ic.cmd_timeout_ms * 1000000; | |
521 | } | |
522 | ||
523 | mrq.data = &data; | |
524 | } | |
525 | ||
526 | mrq.cmd = &cmd; | |
527 | ||
e94cfef6 | 528 | mmc_get_card(card); |
cb87ea28 | 529 | |
8d1e977d LP |
530 | err = mmc_blk_part_switch(card, md); |
531 | if (err) | |
532 | goto cmd_rel_host; | |
533 | ||
cb87ea28 JC |
534 | if (idata->ic.is_acmd) { |
535 | err = mmc_app_cmd(card->host, card); | |
536 | if (err) | |
537 | goto cmd_rel_host; | |
538 | } | |
539 | ||
8d1e977d LP |
540 | if (is_rpmb) { |
541 | err = mmc_set_blockcount(card, data.blocks, | |
542 | idata->ic.write_flag & (1 << 31)); | |
543 | if (err) | |
544 | goto cmd_rel_host; | |
545 | } | |
546 | ||
a82e484e YG |
547 | if ((MMC_EXTRACT_INDEX_FROM_ARG(cmd.arg) == EXT_CSD_SANITIZE_START) && |
548 | (cmd.opcode == MMC_SWITCH)) { | |
775a9362 ME |
549 | err = ioctl_do_sanitize(card); |
550 | ||
551 | if (err) | |
552 | pr_err("%s: ioctl_do_sanitize() failed. err = %d", | |
553 | __func__, err); | |
554 | ||
555 | goto cmd_rel_host; | |
556 | } | |
557 | ||
cb87ea28 JC |
558 | mmc_wait_for_req(card->host, &mrq); |
559 | ||
560 | if (cmd.error) { | |
561 | dev_err(mmc_dev(card->host), "%s: cmd error %d\n", | |
562 | __func__, cmd.error); | |
563 | err = cmd.error; | |
564 | goto cmd_rel_host; | |
565 | } | |
566 | if (data.error) { | |
567 | dev_err(mmc_dev(card->host), "%s: data error %d\n", | |
568 | __func__, data.error); | |
569 | err = data.error; | |
570 | goto cmd_rel_host; | |
571 | } | |
572 | ||
573 | /* | |
574 | * According to the SD specs, some commands require a delay after | |
575 | * issuing the command. | |
576 | */ | |
577 | if (idata->ic.postsleep_min_us) | |
578 | usleep_range(idata->ic.postsleep_min_us, idata->ic.postsleep_max_us); | |
579 | ||
580 | if (copy_to_user(&(ic_ptr->response), cmd.resp, sizeof(cmd.resp))) { | |
581 | err = -EFAULT; | |
582 | goto cmd_rel_host; | |
583 | } | |
584 | ||
585 | if (!idata->ic.write_flag) { | |
586 | if (copy_to_user((void __user *)(unsigned long) idata->ic.data_ptr, | |
587 | idata->buf, idata->buf_bytes)) { | |
588 | err = -EFAULT; | |
589 | goto cmd_rel_host; | |
590 | } | |
591 | } | |
592 | ||
8d1e977d LP |
593 | if (is_rpmb) { |
594 | /* | |
595 | * Ensure RPMB command has completed by polling CMD13 | |
596 | * "Send Status". | |
597 | */ | |
598 | err = ioctl_rpmb_card_status_poll(card, &status, 5); | |
599 | if (err) | |
600 | dev_err(mmc_dev(card->host), | |
601 | "%s: Card Status=0x%08X, error %d\n", | |
602 | __func__, status, err); | |
603 | } | |
604 | ||
cb87ea28 | 605 | cmd_rel_host: |
e94cfef6 | 606 | mmc_put_card(card); |
cb87ea28 JC |
607 | |
608 | cmd_done: | |
609 | mmc_blk_put(md); | |
1c02f000 | 610 | cmd_err: |
cb87ea28 JC |
611 | kfree(idata->buf); |
612 | kfree(idata); | |
613 | return err; | |
614 | } | |
615 | ||
616 | static int mmc_blk_ioctl(struct block_device *bdev, fmode_t mode, | |
617 | unsigned int cmd, unsigned long arg) | |
618 | { | |
619 | int ret = -EINVAL; | |
620 | if (cmd == MMC_IOC_CMD) | |
621 | ret = mmc_blk_ioctl_cmd(bdev, (struct mmc_ioc_cmd __user *)arg); | |
622 | return ret; | |
623 | } | |
624 | ||
625 | #ifdef CONFIG_COMPAT | |
626 | static int mmc_blk_compat_ioctl(struct block_device *bdev, fmode_t mode, | |
627 | unsigned int cmd, unsigned long arg) | |
628 | { | |
629 | return mmc_blk_ioctl(bdev, mode, cmd, (unsigned long) compat_ptr(arg)); | |
630 | } | |
631 | #endif | |
632 | ||
83d5cde4 | 633 | static const struct block_device_operations mmc_bdops = { |
a5a1561f AV |
634 | .open = mmc_blk_open, |
635 | .release = mmc_blk_release, | |
a885c8c4 | 636 | .getgeo = mmc_blk_getgeo, |
1da177e4 | 637 | .owner = THIS_MODULE, |
cb87ea28 JC |
638 | .ioctl = mmc_blk_ioctl, |
639 | #ifdef CONFIG_COMPAT | |
640 | .compat_ioctl = mmc_blk_compat_ioctl, | |
641 | #endif | |
1da177e4 LT |
642 | }; |
643 | ||
371a689f AW |
644 | static inline int mmc_blk_part_switch(struct mmc_card *card, |
645 | struct mmc_blk_data *md) | |
646 | { | |
647 | int ret; | |
fc95e30b | 648 | struct mmc_blk_data *main_md = dev_get_drvdata(&card->dev); |
0d7d85ca | 649 | |
371a689f AW |
650 | if (main_md->part_curr == md->part_type) |
651 | return 0; | |
652 | ||
653 | if (mmc_card_mmc(card)) { | |
0d7d85ca AH |
654 | u8 part_config = card->ext_csd.part_config; |
655 | ||
656 | part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
657 | part_config |= md->part_type; | |
371a689f AW |
658 | |
659 | ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
0d7d85ca | 660 | EXT_CSD_PART_CONFIG, part_config, |
371a689f AW |
661 | card->ext_csd.part_time); |
662 | if (ret) | |
663 | return ret; | |
0d7d85ca AH |
664 | |
665 | card->ext_csd.part_config = part_config; | |
67716327 | 666 | } |
371a689f AW |
667 | |
668 | main_md->part_curr = md->part_type; | |
669 | return 0; | |
670 | } | |
671 | ||
ec5a19dd PO |
672 | static u32 mmc_sd_num_wr_blocks(struct mmc_card *card) |
673 | { | |
674 | int err; | |
051913da BD |
675 | u32 result; |
676 | __be32 *blocks; | |
ec5a19dd | 677 | |
ad5fd972 | 678 | struct mmc_request mrq = {NULL}; |
1278dba1 | 679 | struct mmc_command cmd = {0}; |
a61ad2b4 | 680 | struct mmc_data data = {0}; |
ec5a19dd PO |
681 | |
682 | struct scatterlist sg; | |
683 | ||
ec5a19dd PO |
684 | cmd.opcode = MMC_APP_CMD; |
685 | cmd.arg = card->rca << 16; | |
7213d175 | 686 | cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC; |
ec5a19dd PO |
687 | |
688 | err = mmc_wait_for_cmd(card->host, &cmd, 0); | |
7213d175 DB |
689 | if (err) |
690 | return (u32)-1; | |
691 | if (!mmc_host_is_spi(card->host) && !(cmd.resp[0] & R1_APP_CMD)) | |
ec5a19dd PO |
692 | return (u32)-1; |
693 | ||
694 | memset(&cmd, 0, sizeof(struct mmc_command)); | |
695 | ||
696 | cmd.opcode = SD_APP_SEND_NUM_WR_BLKS; | |
697 | cmd.arg = 0; | |
7213d175 | 698 | cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; |
ec5a19dd | 699 | |
ec5a19dd PO |
700 | data.blksz = 4; |
701 | data.blocks = 1; | |
702 | data.flags = MMC_DATA_READ; | |
703 | data.sg = &sg; | |
704 | data.sg_len = 1; | |
d380443c | 705 | mmc_set_data_timeout(&data, card); |
ec5a19dd | 706 | |
ec5a19dd PO |
707 | mrq.cmd = &cmd; |
708 | mrq.data = &data; | |
709 | ||
051913da BD |
710 | blocks = kmalloc(4, GFP_KERNEL); |
711 | if (!blocks) | |
712 | return (u32)-1; | |
713 | ||
714 | sg_init_one(&sg, blocks, 4); | |
ec5a19dd PO |
715 | |
716 | mmc_wait_for_req(card->host, &mrq); | |
717 | ||
051913da BD |
718 | result = ntohl(*blocks); |
719 | kfree(blocks); | |
720 | ||
17b0429d | 721 | if (cmd.error || data.error) |
051913da | 722 | result = (u32)-1; |
ec5a19dd | 723 | |
051913da | 724 | return result; |
ec5a19dd PO |
725 | } |
726 | ||
0a2d4048 | 727 | static int get_card_status(struct mmc_card *card, u32 *status, int retries) |
504f191f | 728 | { |
1278dba1 | 729 | struct mmc_command cmd = {0}; |
504f191f AH |
730 | int err; |
731 | ||
504f191f AH |
732 | cmd.opcode = MMC_SEND_STATUS; |
733 | if (!mmc_host_is_spi(card->host)) | |
734 | cmd.arg = card->rca << 16; | |
735 | cmd.flags = MMC_RSP_SPI_R2 | MMC_RSP_R1 | MMC_CMD_AC; | |
0a2d4048 RKAL |
736 | err = mmc_wait_for_cmd(card->host, &cmd, retries); |
737 | if (err == 0) | |
738 | *status = cmd.resp[0]; | |
739 | return err; | |
504f191f AH |
740 | } |
741 | ||
c49433fb | 742 | static int card_busy_detect(struct mmc_card *card, unsigned int timeout_ms, |
95a91298 | 743 | bool hw_busy_detect, struct request *req, int *gen_err) |
c49433fb UH |
744 | { |
745 | unsigned long timeout = jiffies + msecs_to_jiffies(timeout_ms); | |
746 | int err = 0; | |
747 | u32 status; | |
748 | ||
749 | do { | |
750 | err = get_card_status(card, &status, 5); | |
751 | if (err) { | |
752 | pr_err("%s: error %d requesting status\n", | |
753 | req->rq_disk->disk_name, err); | |
754 | return err; | |
755 | } | |
756 | ||
757 | if (status & R1_ERROR) { | |
758 | pr_err("%s: %s: error sending status cmd, status %#x\n", | |
759 | req->rq_disk->disk_name, __func__, status); | |
760 | *gen_err = 1; | |
761 | } | |
762 | ||
95a91298 UH |
763 | /* We may rely on the host hw to handle busy detection.*/ |
764 | if ((card->host->caps & MMC_CAP_WAIT_WHILE_BUSY) && | |
765 | hw_busy_detect) | |
766 | break; | |
767 | ||
c49433fb UH |
768 | /* |
769 | * Timeout if the device never becomes ready for data and never | |
770 | * leaves the program state. | |
771 | */ | |
772 | if (time_after(jiffies, timeout)) { | |
773 | pr_err("%s: Card stuck in programming state! %s %s\n", | |
774 | mmc_hostname(card->host), | |
775 | req->rq_disk->disk_name, __func__); | |
776 | return -ETIMEDOUT; | |
777 | } | |
778 | ||
779 | /* | |
780 | * Some cards mishandle the status bits, | |
781 | * so make sure to check both the busy | |
782 | * indication and the card state. | |
783 | */ | |
784 | } while (!(status & R1_READY_FOR_DATA) || | |
785 | (R1_CURRENT_STATE(status) == R1_STATE_PRG)); | |
786 | ||
787 | return err; | |
788 | } | |
789 | ||
bb5cba40 UH |
790 | static int send_stop(struct mmc_card *card, unsigned int timeout_ms, |
791 | struct request *req, int *gen_err, u32 *stop_status) | |
792 | { | |
793 | struct mmc_host *host = card->host; | |
794 | struct mmc_command cmd = {0}; | |
795 | int err; | |
796 | bool use_r1b_resp = rq_data_dir(req) == WRITE; | |
797 | ||
798 | /* | |
799 | * Normally we use R1B responses for WRITE, but in cases where the host | |
800 | * has specified a max_busy_timeout we need to validate it. A failure | |
801 | * means we need to prevent the host from doing hw busy detection, which | |
802 | * is done by converting to a R1 response instead. | |
803 | */ | |
804 | if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) | |
805 | use_r1b_resp = false; | |
806 | ||
807 | cmd.opcode = MMC_STOP_TRANSMISSION; | |
808 | if (use_r1b_resp) { | |
809 | cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC; | |
810 | cmd.busy_timeout = timeout_ms; | |
811 | } else { | |
812 | cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC; | |
813 | } | |
814 | ||
815 | err = mmc_wait_for_cmd(host, &cmd, 5); | |
816 | if (err) | |
817 | return err; | |
818 | ||
819 | *stop_status = cmd.resp[0]; | |
820 | ||
821 | /* No need to check card status in case of READ. */ | |
822 | if (rq_data_dir(req) == READ) | |
823 | return 0; | |
824 | ||
825 | if (!mmc_host_is_spi(host) && | |
826 | (*stop_status & R1_ERROR)) { | |
827 | pr_err("%s: %s: general error sending stop command, resp %#x\n", | |
828 | req->rq_disk->disk_name, __func__, *stop_status); | |
829 | *gen_err = 1; | |
830 | } | |
831 | ||
832 | return card_busy_detect(card, timeout_ms, use_r1b_resp, req, gen_err); | |
833 | } | |
834 | ||
a8ad82cc | 835 | #define ERR_NOMEDIUM 3 |
a01f3ccf RKAL |
836 | #define ERR_RETRY 2 |
837 | #define ERR_ABORT 1 | |
838 | #define ERR_CONTINUE 0 | |
839 | ||
840 | static int mmc_blk_cmd_error(struct request *req, const char *name, int error, | |
841 | bool status_valid, u32 status) | |
842 | { | |
843 | switch (error) { | |
844 | case -EILSEQ: | |
845 | /* response crc error, retry the r/w cmd */ | |
846 | pr_err("%s: %s sending %s command, card status %#x\n", | |
847 | req->rq_disk->disk_name, "response CRC error", | |
848 | name, status); | |
849 | return ERR_RETRY; | |
850 | ||
851 | case -ETIMEDOUT: | |
852 | pr_err("%s: %s sending %s command, card status %#x\n", | |
853 | req->rq_disk->disk_name, "timed out", name, status); | |
854 | ||
855 | /* If the status cmd initially failed, retry the r/w cmd */ | |
856 | if (!status_valid) | |
857 | return ERR_RETRY; | |
858 | ||
859 | /* | |
860 | * If it was a r/w cmd crc error, or illegal command | |
861 | * (eg, issued in wrong state) then retry - we should | |
862 | * have corrected the state problem above. | |
863 | */ | |
864 | if (status & (R1_COM_CRC_ERROR | R1_ILLEGAL_COMMAND)) | |
865 | return ERR_RETRY; | |
866 | ||
867 | /* Otherwise abort the command */ | |
868 | return ERR_ABORT; | |
869 | ||
870 | default: | |
871 | /* We don't understand the error code the driver gave us */ | |
872 | pr_err("%s: unknown error %d sending read/write command, card status %#x\n", | |
873 | req->rq_disk->disk_name, error, status); | |
874 | return ERR_ABORT; | |
875 | } | |
876 | } | |
877 | ||
878 | /* | |
879 | * Initial r/w and stop cmd error recovery. | |
880 | * We don't know whether the card received the r/w cmd or not, so try to | |
881 | * restore things back to a sane state. Essentially, we do this as follows: | |
882 | * - Obtain card status. If the first attempt to obtain card status fails, | |
883 | * the status word will reflect the failed status cmd, not the failed | |
884 | * r/w cmd. If we fail to obtain card status, it suggests we can no | |
885 | * longer communicate with the card. | |
886 | * - Check the card state. If the card received the cmd but there was a | |
887 | * transient problem with the response, it might still be in a data transfer | |
888 | * mode. Try to send it a stop command. If this fails, we can't recover. | |
889 | * - If the r/w cmd failed due to a response CRC error, it was probably | |
890 | * transient, so retry the cmd. | |
891 | * - If the r/w cmd timed out, but we didn't get the r/w cmd status, retry. | |
892 | * - If the r/w cmd timed out, and the r/w cmd failed due to CRC error or | |
893 | * illegal cmd, retry. | |
894 | * Otherwise we don't understand what happened, so abort. | |
895 | */ | |
896 | static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req, | |
c8760069 | 897 | struct mmc_blk_request *brq, int *ecc_err, int *gen_err) |
a01f3ccf RKAL |
898 | { |
899 | bool prev_cmd_status_valid = true; | |
900 | u32 status, stop_status = 0; | |
901 | int err, retry; | |
902 | ||
a8ad82cc SRT |
903 | if (mmc_card_removed(card)) |
904 | return ERR_NOMEDIUM; | |
905 | ||
a01f3ccf RKAL |
906 | /* |
907 | * Try to get card status which indicates both the card state | |
908 | * and why there was no response. If the first attempt fails, | |
909 | * we can't be sure the returned status is for the r/w command. | |
910 | */ | |
911 | for (retry = 2; retry >= 0; retry--) { | |
912 | err = get_card_status(card, &status, 0); | |
913 | if (!err) | |
914 | break; | |
915 | ||
916 | prev_cmd_status_valid = false; | |
917 | pr_err("%s: error %d sending status command, %sing\n", | |
918 | req->rq_disk->disk_name, err, retry ? "retry" : "abort"); | |
919 | } | |
920 | ||
921 | /* We couldn't get a response from the card. Give up. */ | |
a8ad82cc SRT |
922 | if (err) { |
923 | /* Check if the card is removed */ | |
924 | if (mmc_detect_card_removed(card->host)) | |
925 | return ERR_NOMEDIUM; | |
a01f3ccf | 926 | return ERR_ABORT; |
a8ad82cc | 927 | } |
a01f3ccf | 928 | |
67716327 AH |
929 | /* Flag ECC errors */ |
930 | if ((status & R1_CARD_ECC_FAILED) || | |
931 | (brq->stop.resp[0] & R1_CARD_ECC_FAILED) || | |
932 | (brq->cmd.resp[0] & R1_CARD_ECC_FAILED)) | |
933 | *ecc_err = 1; | |
934 | ||
c8760069 KY |
935 | /* Flag General errors */ |
936 | if (!mmc_host_is_spi(card->host) && rq_data_dir(req) != READ) | |
937 | if ((status & R1_ERROR) || | |
938 | (brq->stop.resp[0] & R1_ERROR)) { | |
939 | pr_err("%s: %s: general error sending stop or status command, stop cmd response %#x, card status %#x\n", | |
940 | req->rq_disk->disk_name, __func__, | |
941 | brq->stop.resp[0], status); | |
942 | *gen_err = 1; | |
943 | } | |
944 | ||
a01f3ccf RKAL |
945 | /* |
946 | * Check the current card state. If it is in some data transfer | |
947 | * mode, tell it to stop (and hopefully transition back to TRAN.) | |
948 | */ | |
949 | if (R1_CURRENT_STATE(status) == R1_STATE_DATA || | |
950 | R1_CURRENT_STATE(status) == R1_STATE_RCV) { | |
bb5cba40 UH |
951 | err = send_stop(card, |
952 | DIV_ROUND_UP(brq->data.timeout_ns, 1000000), | |
953 | req, gen_err, &stop_status); | |
954 | if (err) { | |
a01f3ccf RKAL |
955 | pr_err("%s: error %d sending stop command\n", |
956 | req->rq_disk->disk_name, err); | |
bb5cba40 UH |
957 | /* |
958 | * If the stop cmd also timed out, the card is probably | |
959 | * not present, so abort. Other errors are bad news too. | |
960 | */ | |
a01f3ccf | 961 | return ERR_ABORT; |
bb5cba40 UH |
962 | } |
963 | ||
67716327 AH |
964 | if (stop_status & R1_CARD_ECC_FAILED) |
965 | *ecc_err = 1; | |
a01f3ccf RKAL |
966 | } |
967 | ||
968 | /* Check for set block count errors */ | |
969 | if (brq->sbc.error) | |
970 | return mmc_blk_cmd_error(req, "SET_BLOCK_COUNT", brq->sbc.error, | |
971 | prev_cmd_status_valid, status); | |
972 | ||
973 | /* Check for r/w command errors */ | |
974 | if (brq->cmd.error) | |
975 | return mmc_blk_cmd_error(req, "r/w cmd", brq->cmd.error, | |
976 | prev_cmd_status_valid, status); | |
977 | ||
67716327 AH |
978 | /* Data errors */ |
979 | if (!brq->stop.error) | |
980 | return ERR_CONTINUE; | |
981 | ||
a01f3ccf | 982 | /* Now for stop errors. These aren't fatal to the transfer. */ |
5e1344eb | 983 | pr_info("%s: error %d sending stop command, original cmd response %#x, card status %#x\n", |
a01f3ccf RKAL |
984 | req->rq_disk->disk_name, brq->stop.error, |
985 | brq->cmd.resp[0], status); | |
986 | ||
987 | /* | |
988 | * Subsitute in our own stop status as this will give the error | |
989 | * state which happened during the execution of the r/w command. | |
990 | */ | |
991 | if (stop_status) { | |
992 | brq->stop.resp[0] = stop_status; | |
993 | brq->stop.error = 0; | |
994 | } | |
995 | return ERR_CONTINUE; | |
996 | } | |
997 | ||
67716327 AH |
998 | static int mmc_blk_reset(struct mmc_blk_data *md, struct mmc_host *host, |
999 | int type) | |
1000 | { | |
1001 | int err; | |
1002 | ||
1003 | if (md->reset_done & type) | |
1004 | return -EEXIST; | |
1005 | ||
1006 | md->reset_done |= type; | |
1007 | err = mmc_hw_reset(host); | |
1008 | /* Ensure we switch back to the correct partition */ | |
1009 | if (err != -EOPNOTSUPP) { | |
fc95e30b UH |
1010 | struct mmc_blk_data *main_md = |
1011 | dev_get_drvdata(&host->card->dev); | |
67716327 AH |
1012 | int part_err; |
1013 | ||
1014 | main_md->part_curr = main_md->part_type; | |
1015 | part_err = mmc_blk_part_switch(host->card, md); | |
1016 | if (part_err) { | |
1017 | /* | |
1018 | * We have failed to get back into the correct | |
1019 | * partition, so we need to abort the whole request. | |
1020 | */ | |
1021 | return -ENODEV; | |
1022 | } | |
1023 | } | |
1024 | return err; | |
1025 | } | |
1026 | ||
1027 | static inline void mmc_blk_reset_success(struct mmc_blk_data *md, int type) | |
1028 | { | |
1029 | md->reset_done &= ~type; | |
1030 | } | |
1031 | ||
bd788c96 AH |
1032 | static int mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req) |
1033 | { | |
1034 | struct mmc_blk_data *md = mq->data; | |
1035 | struct mmc_card *card = md->queue.card; | |
1036 | unsigned int from, nr, arg; | |
67716327 | 1037 | int err = 0, type = MMC_BLK_DISCARD; |
bd788c96 | 1038 | |
bd788c96 AH |
1039 | if (!mmc_can_erase(card)) { |
1040 | err = -EOPNOTSUPP; | |
1041 | goto out; | |
1042 | } | |
1043 | ||
1044 | from = blk_rq_pos(req); | |
1045 | nr = blk_rq_sectors(req); | |
1046 | ||
b3bf9153 KP |
1047 | if (mmc_can_discard(card)) |
1048 | arg = MMC_DISCARD_ARG; | |
1049 | else if (mmc_can_trim(card)) | |
bd788c96 AH |
1050 | arg = MMC_TRIM_ARG; |
1051 | else | |
1052 | arg = MMC_ERASE_ARG; | |
67716327 | 1053 | retry: |
6a7a6b45 AW |
1054 | if (card->quirks & MMC_QUIRK_INAND_CMD38) { |
1055 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1056 | INAND_CMD38_ARG_EXT_CSD, | |
1057 | arg == MMC_TRIM_ARG ? | |
1058 | INAND_CMD38_ARG_TRIM : | |
1059 | INAND_CMD38_ARG_ERASE, | |
1060 | 0); | |
1061 | if (err) | |
1062 | goto out; | |
1063 | } | |
bd788c96 AH |
1064 | err = mmc_erase(card, from, nr, arg); |
1065 | out: | |
67716327 AH |
1066 | if (err == -EIO && !mmc_blk_reset(md, card->host, type)) |
1067 | goto retry; | |
1068 | if (!err) | |
1069 | mmc_blk_reset_success(md, type); | |
ecf8b5d0 | 1070 | blk_end_request(req, err, blk_rq_bytes(req)); |
bd788c96 | 1071 | |
bd788c96 AH |
1072 | return err ? 0 : 1; |
1073 | } | |
1074 | ||
49804548 AH |
1075 | static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq, |
1076 | struct request *req) | |
1077 | { | |
1078 | struct mmc_blk_data *md = mq->data; | |
1079 | struct mmc_card *card = md->queue.card; | |
775a9362 | 1080 | unsigned int from, nr, arg; |
67716327 | 1081 | int err = 0, type = MMC_BLK_SECDISCARD; |
49804548 | 1082 | |
775a9362 | 1083 | if (!(mmc_can_secure_erase_trim(card))) { |
49804548 AH |
1084 | err = -EOPNOTSUPP; |
1085 | goto out; | |
1086 | } | |
1087 | ||
28302812 AH |
1088 | from = blk_rq_pos(req); |
1089 | nr = blk_rq_sectors(req); | |
1090 | ||
775a9362 ME |
1091 | if (mmc_can_trim(card) && !mmc_erase_group_aligned(card, from, nr)) |
1092 | arg = MMC_SECURE_TRIM1_ARG; | |
1093 | else | |
1094 | arg = MMC_SECURE_ERASE_ARG; | |
d9ddd629 | 1095 | |
67716327 | 1096 | retry: |
6a7a6b45 AW |
1097 | if (card->quirks & MMC_QUIRK_INAND_CMD38) { |
1098 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1099 | INAND_CMD38_ARG_EXT_CSD, | |
1100 | arg == MMC_SECURE_TRIM1_ARG ? | |
1101 | INAND_CMD38_ARG_SECTRIM1 : | |
1102 | INAND_CMD38_ARG_SECERASE, | |
1103 | 0); | |
1104 | if (err) | |
28302812 | 1105 | goto out_retry; |
6a7a6b45 | 1106 | } |
28302812 | 1107 | |
49804548 | 1108 | err = mmc_erase(card, from, nr, arg); |
28302812 AH |
1109 | if (err == -EIO) |
1110 | goto out_retry; | |
1111 | if (err) | |
1112 | goto out; | |
1113 | ||
1114 | if (arg == MMC_SECURE_TRIM1_ARG) { | |
6a7a6b45 AW |
1115 | if (card->quirks & MMC_QUIRK_INAND_CMD38) { |
1116 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1117 | INAND_CMD38_ARG_EXT_CSD, | |
1118 | INAND_CMD38_ARG_SECTRIM2, | |
1119 | 0); | |
1120 | if (err) | |
28302812 | 1121 | goto out_retry; |
6a7a6b45 | 1122 | } |
28302812 | 1123 | |
49804548 | 1124 | err = mmc_erase(card, from, nr, MMC_SECURE_TRIM2_ARG); |
28302812 AH |
1125 | if (err == -EIO) |
1126 | goto out_retry; | |
1127 | if (err) | |
1128 | goto out; | |
6a7a6b45 | 1129 | } |
28302812 | 1130 | |
28302812 AH |
1131 | out_retry: |
1132 | if (err && !mmc_blk_reset(md, card->host, type)) | |
67716327 AH |
1133 | goto retry; |
1134 | if (!err) | |
1135 | mmc_blk_reset_success(md, type); | |
28302812 | 1136 | out: |
ecf8b5d0 | 1137 | blk_end_request(req, err, blk_rq_bytes(req)); |
49804548 | 1138 | |
49804548 AH |
1139 | return err ? 0 : 1; |
1140 | } | |
1141 | ||
f4c5522b AW |
1142 | static int mmc_blk_issue_flush(struct mmc_queue *mq, struct request *req) |
1143 | { | |
1144 | struct mmc_blk_data *md = mq->data; | |
881d1c25 SJ |
1145 | struct mmc_card *card = md->queue.card; |
1146 | int ret = 0; | |
1147 | ||
1148 | ret = mmc_flush_cache(card); | |
1149 | if (ret) | |
1150 | ret = -EIO; | |
f4c5522b | 1151 | |
ecf8b5d0 | 1152 | blk_end_request_all(req, ret); |
f4c5522b | 1153 | |
881d1c25 | 1154 | return ret ? 0 : 1; |
f4c5522b AW |
1155 | } |
1156 | ||
1157 | /* | |
1158 | * Reformat current write as a reliable write, supporting | |
1159 | * both legacy and the enhanced reliable write MMC cards. | |
1160 | * In each transfer we'll handle only as much as a single | |
1161 | * reliable write can handle, thus finish the request in | |
1162 | * partial completions. | |
1163 | */ | |
d0c97cfb AW |
1164 | static inline void mmc_apply_rel_rw(struct mmc_blk_request *brq, |
1165 | struct mmc_card *card, | |
1166 | struct request *req) | |
f4c5522b | 1167 | { |
f4c5522b AW |
1168 | if (!(card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN)) { |
1169 | /* Legacy mode imposes restrictions on transfers. */ | |
1170 | if (!IS_ALIGNED(brq->cmd.arg, card->ext_csd.rel_sectors)) | |
1171 | brq->data.blocks = 1; | |
1172 | ||
1173 | if (brq->data.blocks > card->ext_csd.rel_sectors) | |
1174 | brq->data.blocks = card->ext_csd.rel_sectors; | |
1175 | else if (brq->data.blocks < card->ext_csd.rel_sectors) | |
1176 | brq->data.blocks = 1; | |
1177 | } | |
f4c5522b AW |
1178 | } |
1179 | ||
4c2b8f26 RKAL |
1180 | #define CMD_ERRORS \ |
1181 | (R1_OUT_OF_RANGE | /* Command argument out of range */ \ | |
1182 | R1_ADDRESS_ERROR | /* Misaligned address */ \ | |
1183 | R1_BLOCK_LEN_ERROR | /* Transferred block length incorrect */\ | |
1184 | R1_WP_VIOLATION | /* Tried to write to protected block */ \ | |
1185 | R1_CC_ERROR | /* Card controller error */ \ | |
1186 | R1_ERROR) /* General/unknown error */ | |
1187 | ||
ee8a43a5 PF |
1188 | static int mmc_blk_err_check(struct mmc_card *card, |
1189 | struct mmc_async_req *areq) | |
d78d4a8a | 1190 | { |
ee8a43a5 PF |
1191 | struct mmc_queue_req *mq_mrq = container_of(areq, struct mmc_queue_req, |
1192 | mmc_active); | |
1193 | struct mmc_blk_request *brq = &mq_mrq->brq; | |
1194 | struct request *req = mq_mrq->req; | |
c8760069 | 1195 | int ecc_err = 0, gen_err = 0; |
d78d4a8a PF |
1196 | |
1197 | /* | |
1198 | * sbc.error indicates a problem with the set block count | |
1199 | * command. No data will have been transferred. | |
1200 | * | |
1201 | * cmd.error indicates a problem with the r/w command. No | |
1202 | * data will have been transferred. | |
1203 | * | |
1204 | * stop.error indicates a problem with the stop command. Data | |
1205 | * may have been transferred, or may still be transferring. | |
1206 | */ | |
67716327 AH |
1207 | if (brq->sbc.error || brq->cmd.error || brq->stop.error || |
1208 | brq->data.error) { | |
c8760069 | 1209 | switch (mmc_blk_cmd_recovery(card, req, brq, &ecc_err, &gen_err)) { |
d78d4a8a PF |
1210 | case ERR_RETRY: |
1211 | return MMC_BLK_RETRY; | |
1212 | case ERR_ABORT: | |
1213 | return MMC_BLK_ABORT; | |
a8ad82cc SRT |
1214 | case ERR_NOMEDIUM: |
1215 | return MMC_BLK_NOMEDIUM; | |
d78d4a8a PF |
1216 | case ERR_CONTINUE: |
1217 | break; | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | /* | |
1222 | * Check for errors relating to the execution of the | |
1223 | * initial command - such as address errors. No data | |
1224 | * has been transferred. | |
1225 | */ | |
1226 | if (brq->cmd.resp[0] & CMD_ERRORS) { | |
1227 | pr_err("%s: r/w command failed, status = %#x\n", | |
1228 | req->rq_disk->disk_name, brq->cmd.resp[0]); | |
1229 | return MMC_BLK_ABORT; | |
1230 | } | |
1231 | ||
1232 | /* | |
1233 | * Everything else is either success, or a data error of some | |
1234 | * kind. If it was a write, we may have transitioned to | |
1235 | * program mode, which we have to wait for it to complete. | |
1236 | */ | |
1237 | if (!mmc_host_is_spi(card->host) && rq_data_dir(req) != READ) { | |
c49433fb | 1238 | int err; |
8fee476b | 1239 | |
c8760069 KY |
1240 | /* Check stop command response */ |
1241 | if (brq->stop.resp[0] & R1_ERROR) { | |
1242 | pr_err("%s: %s: general error sending stop command, stop cmd response %#x\n", | |
1243 | req->rq_disk->disk_name, __func__, | |
1244 | brq->stop.resp[0]); | |
1245 | gen_err = 1; | |
1246 | } | |
1247 | ||
95a91298 UH |
1248 | err = card_busy_detect(card, MMC_BLK_TIMEOUT_MS, false, req, |
1249 | &gen_err); | |
c49433fb UH |
1250 | if (err) |
1251 | return MMC_BLK_CMD_ERR; | |
d78d4a8a PF |
1252 | } |
1253 | ||
c8760069 KY |
1254 | /* if general error occurs, retry the write operation. */ |
1255 | if (gen_err) { | |
1256 | pr_warn("%s: retrying write for general error\n", | |
1257 | req->rq_disk->disk_name); | |
1258 | return MMC_BLK_RETRY; | |
1259 | } | |
1260 | ||
d78d4a8a PF |
1261 | if (brq->data.error) { |
1262 | pr_err("%s: error %d transferring data, sector %u, nr %u, cmd response %#x, card status %#x\n", | |
1263 | req->rq_disk->disk_name, brq->data.error, | |
1264 | (unsigned)blk_rq_pos(req), | |
1265 | (unsigned)blk_rq_sectors(req), | |
1266 | brq->cmd.resp[0], brq->stop.resp[0]); | |
1267 | ||
1268 | if (rq_data_dir(req) == READ) { | |
67716327 AH |
1269 | if (ecc_err) |
1270 | return MMC_BLK_ECC_ERR; | |
d78d4a8a PF |
1271 | return MMC_BLK_DATA_ERR; |
1272 | } else { | |
1273 | return MMC_BLK_CMD_ERR; | |
1274 | } | |
1275 | } | |
1276 | ||
67716327 AH |
1277 | if (!brq->data.bytes_xfered) |
1278 | return MMC_BLK_RETRY; | |
d78d4a8a | 1279 | |
ce39f9d1 SJ |
1280 | if (mmc_packed_cmd(mq_mrq->cmd_type)) { |
1281 | if (unlikely(brq->data.blocks << 9 != brq->data.bytes_xfered)) | |
1282 | return MMC_BLK_PARTIAL; | |
1283 | else | |
1284 | return MMC_BLK_SUCCESS; | |
1285 | } | |
1286 | ||
67716327 AH |
1287 | if (blk_rq_bytes(req) != brq->data.bytes_xfered) |
1288 | return MMC_BLK_PARTIAL; | |
1289 | ||
1290 | return MMC_BLK_SUCCESS; | |
d78d4a8a PF |
1291 | } |
1292 | ||
ce39f9d1 SJ |
1293 | static int mmc_blk_packed_err_check(struct mmc_card *card, |
1294 | struct mmc_async_req *areq) | |
1295 | { | |
1296 | struct mmc_queue_req *mq_rq = container_of(areq, struct mmc_queue_req, | |
1297 | mmc_active); | |
1298 | struct request *req = mq_rq->req; | |
1299 | struct mmc_packed *packed = mq_rq->packed; | |
1300 | int err, check, status; | |
1301 | u8 *ext_csd; | |
1302 | ||
1303 | BUG_ON(!packed); | |
1304 | ||
1305 | packed->retries--; | |
1306 | check = mmc_blk_err_check(card, areq); | |
1307 | err = get_card_status(card, &status, 0); | |
1308 | if (err) { | |
1309 | pr_err("%s: error %d sending status command\n", | |
1310 | req->rq_disk->disk_name, err); | |
1311 | return MMC_BLK_ABORT; | |
1312 | } | |
1313 | ||
1314 | if (status & R1_EXCEPTION_EVENT) { | |
86817ffb | 1315 | err = mmc_get_ext_csd(card, &ext_csd); |
ce39f9d1 SJ |
1316 | if (err) { |
1317 | pr_err("%s: error %d sending ext_csd\n", | |
1318 | req->rq_disk->disk_name, err); | |
86817ffb | 1319 | return MMC_BLK_ABORT; |
ce39f9d1 SJ |
1320 | } |
1321 | ||
1322 | if ((ext_csd[EXT_CSD_EXP_EVENTS_STATUS] & | |
1323 | EXT_CSD_PACKED_FAILURE) && | |
1324 | (ext_csd[EXT_CSD_PACKED_CMD_STATUS] & | |
1325 | EXT_CSD_PACKED_GENERIC_ERROR)) { | |
1326 | if (ext_csd[EXT_CSD_PACKED_CMD_STATUS] & | |
1327 | EXT_CSD_PACKED_INDEXED_ERROR) { | |
1328 | packed->idx_failure = | |
1329 | ext_csd[EXT_CSD_PACKED_FAILURE_INDEX] - 1; | |
1330 | check = MMC_BLK_PARTIAL; | |
1331 | } | |
1332 | pr_err("%s: packed cmd failed, nr %u, sectors %u, " | |
1333 | "failure index: %d\n", | |
1334 | req->rq_disk->disk_name, packed->nr_entries, | |
1335 | packed->blocks, packed->idx_failure); | |
1336 | } | |
ce39f9d1 SJ |
1337 | kfree(ext_csd); |
1338 | } | |
1339 | ||
1340 | return check; | |
1341 | } | |
1342 | ||
54d49d77 PF |
1343 | static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq, |
1344 | struct mmc_card *card, | |
1345 | int disable_multi, | |
1346 | struct mmc_queue *mq) | |
1da177e4 | 1347 | { |
54d49d77 PF |
1348 | u32 readcmd, writecmd; |
1349 | struct mmc_blk_request *brq = &mqrq->brq; | |
1350 | struct request *req = mqrq->req; | |
1da177e4 | 1351 | struct mmc_blk_data *md = mq->data; |
4265900e | 1352 | bool do_data_tag; |
1da177e4 | 1353 | |
f4c5522b AW |
1354 | /* |
1355 | * Reliable writes are used to implement Forced Unit Access and | |
1356 | * REQ_META accesses, and are supported only on MMCs. | |
65299a3b CH |
1357 | * |
1358 | * XXX: this really needs a good explanation of why REQ_META | |
1359 | * is treated special. | |
f4c5522b AW |
1360 | */ |
1361 | bool do_rel_wr = ((req->cmd_flags & REQ_FUA) || | |
1362 | (req->cmd_flags & REQ_META)) && | |
1363 | (rq_data_dir(req) == WRITE) && | |
d0c97cfb | 1364 | (md->flags & MMC_BLK_REL_WR); |
f4c5522b | 1365 | |
54d49d77 PF |
1366 | memset(brq, 0, sizeof(struct mmc_blk_request)); |
1367 | brq->mrq.cmd = &brq->cmd; | |
1368 | brq->mrq.data = &brq->data; | |
1da177e4 | 1369 | |
54d49d77 PF |
1370 | brq->cmd.arg = blk_rq_pos(req); |
1371 | if (!mmc_card_blockaddr(card)) | |
1372 | brq->cmd.arg <<= 9; | |
1373 | brq->cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; | |
1374 | brq->data.blksz = 512; | |
1375 | brq->stop.opcode = MMC_STOP_TRANSMISSION; | |
1376 | brq->stop.arg = 0; | |
54d49d77 | 1377 | brq->data.blocks = blk_rq_sectors(req); |
6a79e391 | 1378 | |
54d49d77 PF |
1379 | /* |
1380 | * The block layer doesn't support all sector count | |
1381 | * restrictions, so we need to be prepared for too big | |
1382 | * requests. | |
1383 | */ | |
1384 | if (brq->data.blocks > card->host->max_blk_count) | |
1385 | brq->data.blocks = card->host->max_blk_count; | |
1da177e4 | 1386 | |
2bf22b39 PW |
1387 | if (brq->data.blocks > 1) { |
1388 | /* | |
1389 | * After a read error, we redo the request one sector | |
1390 | * at a time in order to accurately determine which | |
1391 | * sectors can be read successfully. | |
1392 | */ | |
1393 | if (disable_multi) | |
1394 | brq->data.blocks = 1; | |
1395 | ||
2e47e842 KM |
1396 | /* |
1397 | * Some controllers have HW issues while operating | |
1398 | * in multiple I/O mode | |
1399 | */ | |
1400 | if (card->host->ops->multi_io_quirk) | |
1401 | brq->data.blocks = card->host->ops->multi_io_quirk(card, | |
1402 | (rq_data_dir(req) == READ) ? | |
1403 | MMC_DATA_READ : MMC_DATA_WRITE, | |
1404 | brq->data.blocks); | |
2bf22b39 | 1405 | } |
d0c97cfb | 1406 | |
54d49d77 PF |
1407 | if (brq->data.blocks > 1 || do_rel_wr) { |
1408 | /* SPI multiblock writes terminate using a special | |
1409 | * token, not a STOP_TRANSMISSION request. | |
d0c97cfb | 1410 | */ |
54d49d77 PF |
1411 | if (!mmc_host_is_spi(card->host) || |
1412 | rq_data_dir(req) == READ) | |
1413 | brq->mrq.stop = &brq->stop; | |
1414 | readcmd = MMC_READ_MULTIPLE_BLOCK; | |
1415 | writecmd = MMC_WRITE_MULTIPLE_BLOCK; | |
1416 | } else { | |
1417 | brq->mrq.stop = NULL; | |
1418 | readcmd = MMC_READ_SINGLE_BLOCK; | |
1419 | writecmd = MMC_WRITE_BLOCK; | |
1420 | } | |
1421 | if (rq_data_dir(req) == READ) { | |
1422 | brq->cmd.opcode = readcmd; | |
1423 | brq->data.flags |= MMC_DATA_READ; | |
bcc3e172 UH |
1424 | if (brq->mrq.stop) |
1425 | brq->stop.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | | |
1426 | MMC_CMD_AC; | |
54d49d77 PF |
1427 | } else { |
1428 | brq->cmd.opcode = writecmd; | |
1429 | brq->data.flags |= MMC_DATA_WRITE; | |
bcc3e172 UH |
1430 | if (brq->mrq.stop) |
1431 | brq->stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | | |
1432 | MMC_CMD_AC; | |
54d49d77 | 1433 | } |
d0c97cfb | 1434 | |
54d49d77 PF |
1435 | if (do_rel_wr) |
1436 | mmc_apply_rel_rw(brq, card, req); | |
f4c5522b | 1437 | |
4265900e SD |
1438 | /* |
1439 | * Data tag is used only during writing meta data to speed | |
1440 | * up write and any subsequent read of this meta data | |
1441 | */ | |
1442 | do_data_tag = (card->ext_csd.data_tag_unit_size) && | |
1443 | (req->cmd_flags & REQ_META) && | |
1444 | (rq_data_dir(req) == WRITE) && | |
1445 | ((brq->data.blocks * brq->data.blksz) >= | |
1446 | card->ext_csd.data_tag_unit_size); | |
1447 | ||
54d49d77 PF |
1448 | /* |
1449 | * Pre-defined multi-block transfers are preferable to | |
1450 | * open ended-ones (and necessary for reliable writes). | |
1451 | * However, it is not sufficient to just send CMD23, | |
1452 | * and avoid the final CMD12, as on an error condition | |
1453 | * CMD12 (stop) needs to be sent anyway. This, coupled | |
1454 | * with Auto-CMD23 enhancements provided by some | |
1455 | * hosts, means that the complexity of dealing | |
1456 | * with this is best left to the host. If CMD23 is | |
1457 | * supported by card and host, we'll fill sbc in and let | |
1458 | * the host deal with handling it correctly. This means | |
1459 | * that for hosts that don't expose MMC_CAP_CMD23, no | |
1460 | * change of behavior will be observed. | |
1461 | * | |
1462 | * N.B: Some MMC cards experience perf degradation. | |
1463 | * We'll avoid using CMD23-bounded multiblock writes for | |
1464 | * these, while retaining features like reliable writes. | |
1465 | */ | |
4265900e SD |
1466 | if ((md->flags & MMC_BLK_CMD23) && mmc_op_multi(brq->cmd.opcode) && |
1467 | (do_rel_wr || !(card->quirks & MMC_QUIRK_BLK_NO_CMD23) || | |
1468 | do_data_tag)) { | |
54d49d77 PF |
1469 | brq->sbc.opcode = MMC_SET_BLOCK_COUNT; |
1470 | brq->sbc.arg = brq->data.blocks | | |
4265900e SD |
1471 | (do_rel_wr ? (1 << 31) : 0) | |
1472 | (do_data_tag ? (1 << 29) : 0); | |
54d49d77 PF |
1473 | brq->sbc.flags = MMC_RSP_R1 | MMC_CMD_AC; |
1474 | brq->mrq.sbc = &brq->sbc; | |
1475 | } | |
98ccf149 | 1476 | |
54d49d77 PF |
1477 | mmc_set_data_timeout(&brq->data, card); |
1478 | ||
1479 | brq->data.sg = mqrq->sg; | |
1480 | brq->data.sg_len = mmc_queue_map_sg(mq, mqrq); | |
1481 | ||
1482 | /* | |
1483 | * Adjust the sg list so it is the same size as the | |
1484 | * request. | |
1485 | */ | |
1486 | if (brq->data.blocks != blk_rq_sectors(req)) { | |
1487 | int i, data_size = brq->data.blocks << 9; | |
1488 | struct scatterlist *sg; | |
1489 | ||
1490 | for_each_sg(brq->data.sg, sg, brq->data.sg_len, i) { | |
1491 | data_size -= sg->length; | |
1492 | if (data_size <= 0) { | |
1493 | sg->length += data_size; | |
1494 | i++; | |
1495 | break; | |
6a79e391 | 1496 | } |
6a79e391 | 1497 | } |
54d49d77 PF |
1498 | brq->data.sg_len = i; |
1499 | } | |
1500 | ||
ee8a43a5 PF |
1501 | mqrq->mmc_active.mrq = &brq->mrq; |
1502 | mqrq->mmc_active.err_check = mmc_blk_err_check; | |
1503 | ||
54d49d77 PF |
1504 | mmc_queue_bounce_pre(mqrq); |
1505 | } | |
6a79e391 | 1506 | |
ce39f9d1 SJ |
1507 | static inline u8 mmc_calc_packed_hdr_segs(struct request_queue *q, |
1508 | struct mmc_card *card) | |
1509 | { | |
1510 | unsigned int hdr_sz = mmc_large_sector(card) ? 4096 : 512; | |
1511 | unsigned int max_seg_sz = queue_max_segment_size(q); | |
1512 | unsigned int len, nr_segs = 0; | |
1513 | ||
1514 | do { | |
1515 | len = min(hdr_sz, max_seg_sz); | |
1516 | hdr_sz -= len; | |
1517 | nr_segs++; | |
1518 | } while (hdr_sz); | |
1519 | ||
1520 | return nr_segs; | |
1521 | } | |
1522 | ||
1523 | static u8 mmc_blk_prep_packed_list(struct mmc_queue *mq, struct request *req) | |
1524 | { | |
1525 | struct request_queue *q = mq->queue; | |
1526 | struct mmc_card *card = mq->card; | |
1527 | struct request *cur = req, *next = NULL; | |
1528 | struct mmc_blk_data *md = mq->data; | |
1529 | struct mmc_queue_req *mqrq = mq->mqrq_cur; | |
1530 | bool en_rel_wr = card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN; | |
1531 | unsigned int req_sectors = 0, phys_segments = 0; | |
1532 | unsigned int max_blk_count, max_phys_segs; | |
1533 | bool put_back = true; | |
1534 | u8 max_packed_rw = 0; | |
1535 | u8 reqs = 0; | |
1536 | ||
1537 | if (!(md->flags & MMC_BLK_PACKED_CMD)) | |
1538 | goto no_packed; | |
1539 | ||
1540 | if ((rq_data_dir(cur) == WRITE) && | |
1541 | mmc_host_packed_wr(card->host)) | |
1542 | max_packed_rw = card->ext_csd.max_packed_writes; | |
1543 | ||
1544 | if (max_packed_rw == 0) | |
1545 | goto no_packed; | |
1546 | ||
1547 | if (mmc_req_rel_wr(cur) && | |
1548 | (md->flags & MMC_BLK_REL_WR) && !en_rel_wr) | |
1549 | goto no_packed; | |
1550 | ||
1551 | if (mmc_large_sector(card) && | |
1552 | !IS_ALIGNED(blk_rq_sectors(cur), 8)) | |
1553 | goto no_packed; | |
1554 | ||
1555 | mmc_blk_clear_packed(mqrq); | |
1556 | ||
1557 | max_blk_count = min(card->host->max_blk_count, | |
1558 | card->host->max_req_size >> 9); | |
1559 | if (unlikely(max_blk_count > 0xffff)) | |
1560 | max_blk_count = 0xffff; | |
1561 | ||
1562 | max_phys_segs = queue_max_segments(q); | |
1563 | req_sectors += blk_rq_sectors(cur); | |
1564 | phys_segments += cur->nr_phys_segments; | |
1565 | ||
1566 | if (rq_data_dir(cur) == WRITE) { | |
1567 | req_sectors += mmc_large_sector(card) ? 8 : 1; | |
1568 | phys_segments += mmc_calc_packed_hdr_segs(q, card); | |
1569 | } | |
1570 | ||
1571 | do { | |
1572 | if (reqs >= max_packed_rw - 1) { | |
1573 | put_back = false; | |
1574 | break; | |
1575 | } | |
1576 | ||
1577 | spin_lock_irq(q->queue_lock); | |
1578 | next = blk_fetch_request(q); | |
1579 | spin_unlock_irq(q->queue_lock); | |
1580 | if (!next) { | |
1581 | put_back = false; | |
1582 | break; | |
1583 | } | |
1584 | ||
1585 | if (mmc_large_sector(card) && | |
1586 | !IS_ALIGNED(blk_rq_sectors(next), 8)) | |
1587 | break; | |
1588 | ||
1589 | if (next->cmd_flags & REQ_DISCARD || | |
1590 | next->cmd_flags & REQ_FLUSH) | |
1591 | break; | |
1592 | ||
1593 | if (rq_data_dir(cur) != rq_data_dir(next)) | |
1594 | break; | |
1595 | ||
1596 | if (mmc_req_rel_wr(next) && | |
1597 | (md->flags & MMC_BLK_REL_WR) && !en_rel_wr) | |
1598 | break; | |
1599 | ||
1600 | req_sectors += blk_rq_sectors(next); | |
1601 | if (req_sectors > max_blk_count) | |
1602 | break; | |
1603 | ||
1604 | phys_segments += next->nr_phys_segments; | |
1605 | if (phys_segments > max_phys_segs) | |
1606 | break; | |
1607 | ||
1608 | list_add_tail(&next->queuelist, &mqrq->packed->list); | |
1609 | cur = next; | |
1610 | reqs++; | |
1611 | } while (1); | |
1612 | ||
1613 | if (put_back) { | |
1614 | spin_lock_irq(q->queue_lock); | |
1615 | blk_requeue_request(q, next); | |
1616 | spin_unlock_irq(q->queue_lock); | |
1617 | } | |
1618 | ||
1619 | if (reqs > 0) { | |
1620 | list_add(&req->queuelist, &mqrq->packed->list); | |
1621 | mqrq->packed->nr_entries = ++reqs; | |
1622 | mqrq->packed->retries = reqs; | |
1623 | return reqs; | |
1624 | } | |
1625 | ||
1626 | no_packed: | |
1627 | mqrq->cmd_type = MMC_PACKED_NONE; | |
1628 | return 0; | |
1629 | } | |
1630 | ||
1631 | static void mmc_blk_packed_hdr_wrq_prep(struct mmc_queue_req *mqrq, | |
1632 | struct mmc_card *card, | |
1633 | struct mmc_queue *mq) | |
1634 | { | |
1635 | struct mmc_blk_request *brq = &mqrq->brq; | |
1636 | struct request *req = mqrq->req; | |
1637 | struct request *prq; | |
1638 | struct mmc_blk_data *md = mq->data; | |
1639 | struct mmc_packed *packed = mqrq->packed; | |
1640 | bool do_rel_wr, do_data_tag; | |
1641 | u32 *packed_cmd_hdr; | |
1642 | u8 hdr_blocks; | |
1643 | u8 i = 1; | |
1644 | ||
1645 | BUG_ON(!packed); | |
1646 | ||
1647 | mqrq->cmd_type = MMC_PACKED_WRITE; | |
1648 | packed->blocks = 0; | |
1649 | packed->idx_failure = MMC_PACKED_NR_IDX; | |
1650 | ||
1651 | packed_cmd_hdr = packed->cmd_hdr; | |
1652 | memset(packed_cmd_hdr, 0, sizeof(packed->cmd_hdr)); | |
1653 | packed_cmd_hdr[0] = (packed->nr_entries << 16) | | |
1654 | (PACKED_CMD_WR << 8) | PACKED_CMD_VER; | |
1655 | hdr_blocks = mmc_large_sector(card) ? 8 : 1; | |
1656 | ||
1657 | /* | |
1658 | * Argument for each entry of packed group | |
1659 | */ | |
1660 | list_for_each_entry(prq, &packed->list, queuelist) { | |
1661 | do_rel_wr = mmc_req_rel_wr(prq) && (md->flags & MMC_BLK_REL_WR); | |
1662 | do_data_tag = (card->ext_csd.data_tag_unit_size) && | |
1663 | (prq->cmd_flags & REQ_META) && | |
1664 | (rq_data_dir(prq) == WRITE) && | |
1665 | ((brq->data.blocks * brq->data.blksz) >= | |
1666 | card->ext_csd.data_tag_unit_size); | |
1667 | /* Argument of CMD23 */ | |
1668 | packed_cmd_hdr[(i * 2)] = | |
1669 | (do_rel_wr ? MMC_CMD23_ARG_REL_WR : 0) | | |
1670 | (do_data_tag ? MMC_CMD23_ARG_TAG_REQ : 0) | | |
1671 | blk_rq_sectors(prq); | |
1672 | /* Argument of CMD18 or CMD25 */ | |
1673 | packed_cmd_hdr[((i * 2)) + 1] = | |
1674 | mmc_card_blockaddr(card) ? | |
1675 | blk_rq_pos(prq) : blk_rq_pos(prq) << 9; | |
1676 | packed->blocks += blk_rq_sectors(prq); | |
1677 | i++; | |
1678 | } | |
1679 | ||
1680 | memset(brq, 0, sizeof(struct mmc_blk_request)); | |
1681 | brq->mrq.cmd = &brq->cmd; | |
1682 | brq->mrq.data = &brq->data; | |
1683 | brq->mrq.sbc = &brq->sbc; | |
1684 | brq->mrq.stop = &brq->stop; | |
1685 | ||
1686 | brq->sbc.opcode = MMC_SET_BLOCK_COUNT; | |
1687 | brq->sbc.arg = MMC_CMD23_ARG_PACKED | (packed->blocks + hdr_blocks); | |
1688 | brq->sbc.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
1689 | ||
1690 | brq->cmd.opcode = MMC_WRITE_MULTIPLE_BLOCK; | |
1691 | brq->cmd.arg = blk_rq_pos(req); | |
1692 | if (!mmc_card_blockaddr(card)) | |
1693 | brq->cmd.arg <<= 9; | |
1694 | brq->cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; | |
1695 | ||
1696 | brq->data.blksz = 512; | |
1697 | brq->data.blocks = packed->blocks + hdr_blocks; | |
1698 | brq->data.flags |= MMC_DATA_WRITE; | |
1699 | ||
1700 | brq->stop.opcode = MMC_STOP_TRANSMISSION; | |
1701 | brq->stop.arg = 0; | |
1702 | brq->stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC; | |
1703 | ||
1704 | mmc_set_data_timeout(&brq->data, card); | |
1705 | ||
1706 | brq->data.sg = mqrq->sg; | |
1707 | brq->data.sg_len = mmc_queue_map_sg(mq, mqrq); | |
1708 | ||
1709 | mqrq->mmc_active.mrq = &brq->mrq; | |
1710 | mqrq->mmc_active.err_check = mmc_blk_packed_err_check; | |
1711 | ||
1712 | mmc_queue_bounce_pre(mqrq); | |
1713 | } | |
1714 | ||
67716327 AH |
1715 | static int mmc_blk_cmd_err(struct mmc_blk_data *md, struct mmc_card *card, |
1716 | struct mmc_blk_request *brq, struct request *req, | |
1717 | int ret) | |
1718 | { | |
ce39f9d1 SJ |
1719 | struct mmc_queue_req *mq_rq; |
1720 | mq_rq = container_of(brq, struct mmc_queue_req, brq); | |
1721 | ||
67716327 AH |
1722 | /* |
1723 | * If this is an SD card and we're writing, we can first | |
1724 | * mark the known good sectors as ok. | |
1725 | * | |
1726 | * If the card is not SD, we can still ok written sectors | |
1727 | * as reported by the controller (which might be less than | |
1728 | * the real number of written sectors, but never more). | |
1729 | */ | |
1730 | if (mmc_card_sd(card)) { | |
1731 | u32 blocks; | |
1732 | ||
1733 | blocks = mmc_sd_num_wr_blocks(card); | |
1734 | if (blocks != (u32)-1) { | |
ecf8b5d0 | 1735 | ret = blk_end_request(req, 0, blocks << 9); |
67716327 AH |
1736 | } |
1737 | } else { | |
ce39f9d1 SJ |
1738 | if (!mmc_packed_cmd(mq_rq->cmd_type)) |
1739 | ret = blk_end_request(req, 0, brq->data.bytes_xfered); | |
67716327 AH |
1740 | } |
1741 | return ret; | |
1742 | } | |
1743 | ||
ce39f9d1 SJ |
1744 | static int mmc_blk_end_packed_req(struct mmc_queue_req *mq_rq) |
1745 | { | |
1746 | struct request *prq; | |
1747 | struct mmc_packed *packed = mq_rq->packed; | |
1748 | int idx = packed->idx_failure, i = 0; | |
1749 | int ret = 0; | |
1750 | ||
1751 | BUG_ON(!packed); | |
1752 | ||
1753 | while (!list_empty(&packed->list)) { | |
1754 | prq = list_entry_rq(packed->list.next); | |
1755 | if (idx == i) { | |
1756 | /* retry from error index */ | |
1757 | packed->nr_entries -= idx; | |
1758 | mq_rq->req = prq; | |
1759 | ret = 1; | |
1760 | ||
1761 | if (packed->nr_entries == MMC_PACKED_NR_SINGLE) { | |
1762 | list_del_init(&prq->queuelist); | |
1763 | mmc_blk_clear_packed(mq_rq); | |
1764 | } | |
1765 | return ret; | |
1766 | } | |
1767 | list_del_init(&prq->queuelist); | |
1768 | blk_end_request(prq, 0, blk_rq_bytes(prq)); | |
1769 | i++; | |
1770 | } | |
1771 | ||
1772 | mmc_blk_clear_packed(mq_rq); | |
1773 | return ret; | |
1774 | } | |
1775 | ||
1776 | static void mmc_blk_abort_packed_req(struct mmc_queue_req *mq_rq) | |
1777 | { | |
1778 | struct request *prq; | |
1779 | struct mmc_packed *packed = mq_rq->packed; | |
1780 | ||
1781 | BUG_ON(!packed); | |
1782 | ||
1783 | while (!list_empty(&packed->list)) { | |
1784 | prq = list_entry_rq(packed->list.next); | |
1785 | list_del_init(&prq->queuelist); | |
1786 | blk_end_request(prq, -EIO, blk_rq_bytes(prq)); | |
1787 | } | |
1788 | ||
1789 | mmc_blk_clear_packed(mq_rq); | |
1790 | } | |
1791 | ||
1792 | static void mmc_blk_revert_packed_req(struct mmc_queue *mq, | |
1793 | struct mmc_queue_req *mq_rq) | |
1794 | { | |
1795 | struct request *prq; | |
1796 | struct request_queue *q = mq->queue; | |
1797 | struct mmc_packed *packed = mq_rq->packed; | |
1798 | ||
1799 | BUG_ON(!packed); | |
1800 | ||
1801 | while (!list_empty(&packed->list)) { | |
1802 | prq = list_entry_rq(packed->list.prev); | |
1803 | if (prq->queuelist.prev != &packed->list) { | |
1804 | list_del_init(&prq->queuelist); | |
1805 | spin_lock_irq(q->queue_lock); | |
1806 | blk_requeue_request(mq->queue, prq); | |
1807 | spin_unlock_irq(q->queue_lock); | |
1808 | } else { | |
1809 | list_del_init(&prq->queuelist); | |
1810 | } | |
1811 | } | |
1812 | ||
1813 | mmc_blk_clear_packed(mq_rq); | |
1814 | } | |
1815 | ||
ee8a43a5 | 1816 | static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc) |
54d49d77 PF |
1817 | { |
1818 | struct mmc_blk_data *md = mq->data; | |
1819 | struct mmc_card *card = md->queue.card; | |
1820 | struct mmc_blk_request *brq = &mq->mqrq_cur->brq; | |
67716327 | 1821 | int ret = 1, disable_multi = 0, retry = 0, type; |
d78d4a8a | 1822 | enum mmc_blk_status status; |
ee8a43a5 | 1823 | struct mmc_queue_req *mq_rq; |
a5075eb9 | 1824 | struct request *req = rqc; |
ee8a43a5 | 1825 | struct mmc_async_req *areq; |
ce39f9d1 SJ |
1826 | const u8 packed_nr = 2; |
1827 | u8 reqs = 0; | |
1da177e4 | 1828 | |
ee8a43a5 PF |
1829 | if (!rqc && !mq->mqrq_prev->req) |
1830 | return 0; | |
98ccf149 | 1831 | |
ce39f9d1 SJ |
1832 | if (rqc) |
1833 | reqs = mmc_blk_prep_packed_list(mq, rqc); | |
1834 | ||
ee8a43a5 PF |
1835 | do { |
1836 | if (rqc) { | |
a5075eb9 SD |
1837 | /* |
1838 | * When 4KB native sector is enabled, only 8 blocks | |
1839 | * multiple read or write is allowed | |
1840 | */ | |
1841 | if ((brq->data.blocks & 0x07) && | |
1842 | (card->ext_csd.data_sector_size == 4096)) { | |
1843 | pr_err("%s: Transfer size is not 4KB sector size aligned\n", | |
1844 | req->rq_disk->disk_name); | |
ce39f9d1 | 1845 | mq_rq = mq->mqrq_cur; |
a5075eb9 SD |
1846 | goto cmd_abort; |
1847 | } | |
ce39f9d1 SJ |
1848 | |
1849 | if (reqs >= packed_nr) | |
1850 | mmc_blk_packed_hdr_wrq_prep(mq->mqrq_cur, | |
1851 | card, mq); | |
1852 | else | |
1853 | mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq); | |
ee8a43a5 PF |
1854 | areq = &mq->mqrq_cur->mmc_active; |
1855 | } else | |
1856 | areq = NULL; | |
1857 | areq = mmc_start_req(card->host, areq, (int *) &status); | |
2220eedf KD |
1858 | if (!areq) { |
1859 | if (status == MMC_BLK_NEW_REQUEST) | |
1860 | mq->flags |= MMC_QUEUE_NEW_REQUEST; | |
ee8a43a5 | 1861 | return 0; |
2220eedf | 1862 | } |
ee8a43a5 PF |
1863 | |
1864 | mq_rq = container_of(areq, struct mmc_queue_req, mmc_active); | |
1865 | brq = &mq_rq->brq; | |
1866 | req = mq_rq->req; | |
67716327 | 1867 | type = rq_data_dir(req) == READ ? MMC_BLK_READ : MMC_BLK_WRITE; |
ee8a43a5 | 1868 | mmc_queue_bounce_post(mq_rq); |
98ccf149 | 1869 | |
d78d4a8a PF |
1870 | switch (status) { |
1871 | case MMC_BLK_SUCCESS: | |
1872 | case MMC_BLK_PARTIAL: | |
1873 | /* | |
1874 | * A block was successfully transferred. | |
1875 | */ | |
67716327 | 1876 | mmc_blk_reset_success(md, type); |
ce39f9d1 SJ |
1877 | |
1878 | if (mmc_packed_cmd(mq_rq->cmd_type)) { | |
1879 | ret = mmc_blk_end_packed_req(mq_rq); | |
1880 | break; | |
1881 | } else { | |
1882 | ret = blk_end_request(req, 0, | |
d78d4a8a | 1883 | brq->data.bytes_xfered); |
ce39f9d1 SJ |
1884 | } |
1885 | ||
67716327 AH |
1886 | /* |
1887 | * If the blk_end_request function returns non-zero even | |
1888 | * though all data has been transferred and no errors | |
1889 | * were returned by the host controller, it's a bug. | |
1890 | */ | |
ee8a43a5 | 1891 | if (status == MMC_BLK_SUCCESS && ret) { |
a3c76eb9 | 1892 | pr_err("%s BUG rq_tot %d d_xfer %d\n", |
ee8a43a5 PF |
1893 | __func__, blk_rq_bytes(req), |
1894 | brq->data.bytes_xfered); | |
1895 | rqc = NULL; | |
1896 | goto cmd_abort; | |
1897 | } | |
d78d4a8a PF |
1898 | break; |
1899 | case MMC_BLK_CMD_ERR: | |
67716327 AH |
1900 | ret = mmc_blk_cmd_err(md, card, brq, req, ret); |
1901 | if (!mmc_blk_reset(md, card->host, type)) | |
1902 | break; | |
1903 | goto cmd_abort; | |
d78d4a8a PF |
1904 | case MMC_BLK_RETRY: |
1905 | if (retry++ < 5) | |
a01f3ccf | 1906 | break; |
67716327 | 1907 | /* Fall through */ |
d78d4a8a | 1908 | case MMC_BLK_ABORT: |
67716327 AH |
1909 | if (!mmc_blk_reset(md, card->host, type)) |
1910 | break; | |
4c2b8f26 | 1911 | goto cmd_abort; |
67716327 AH |
1912 | case MMC_BLK_DATA_ERR: { |
1913 | int err; | |
1914 | ||
1915 | err = mmc_blk_reset(md, card->host, type); | |
1916 | if (!err) | |
1917 | break; | |
ce39f9d1 SJ |
1918 | if (err == -ENODEV || |
1919 | mmc_packed_cmd(mq_rq->cmd_type)) | |
67716327 AH |
1920 | goto cmd_abort; |
1921 | /* Fall through */ | |
1922 | } | |
1923 | case MMC_BLK_ECC_ERR: | |
1924 | if (brq->data.blocks > 1) { | |
1925 | /* Redo read one sector at a time */ | |
6606110d JP |
1926 | pr_warn("%s: retrying using single block read\n", |
1927 | req->rq_disk->disk_name); | |
67716327 AH |
1928 | disable_multi = 1; |
1929 | break; | |
1930 | } | |
d78d4a8a PF |
1931 | /* |
1932 | * After an error, we redo I/O one sector at a | |
1933 | * time, so we only reach here after trying to | |
1934 | * read a single sector. | |
1935 | */ | |
ecf8b5d0 | 1936 | ret = blk_end_request(req, -EIO, |
d78d4a8a | 1937 | brq->data.blksz); |
ee8a43a5 PF |
1938 | if (!ret) |
1939 | goto start_new_req; | |
d78d4a8a | 1940 | break; |
a8ad82cc SRT |
1941 | case MMC_BLK_NOMEDIUM: |
1942 | goto cmd_abort; | |
2220eedf KD |
1943 | default: |
1944 | pr_err("%s: Unhandled return value (%d)", | |
1945 | req->rq_disk->disk_name, status); | |
1946 | goto cmd_abort; | |
4c2b8f26 RKAL |
1947 | } |
1948 | ||
ee8a43a5 | 1949 | if (ret) { |
ce39f9d1 SJ |
1950 | if (mmc_packed_cmd(mq_rq->cmd_type)) { |
1951 | if (!mq_rq->packed->retries) | |
1952 | goto cmd_abort; | |
1953 | mmc_blk_packed_hdr_wrq_prep(mq_rq, card, mq); | |
1954 | mmc_start_req(card->host, | |
1955 | &mq_rq->mmc_active, NULL); | |
1956 | } else { | |
1957 | ||
1958 | /* | |
1959 | * In case of a incomplete request | |
1960 | * prepare it again and resend. | |
1961 | */ | |
1962 | mmc_blk_rw_rq_prep(mq_rq, card, | |
1963 | disable_multi, mq); | |
1964 | mmc_start_req(card->host, | |
1965 | &mq_rq->mmc_active, NULL); | |
1966 | } | |
ee8a43a5 | 1967 | } |
1da177e4 LT |
1968 | } while (ret); |
1969 | ||
1da177e4 LT |
1970 | return 1; |
1971 | ||
a01f3ccf | 1972 | cmd_abort: |
ce39f9d1 SJ |
1973 | if (mmc_packed_cmd(mq_rq->cmd_type)) { |
1974 | mmc_blk_abort_packed_req(mq_rq); | |
1975 | } else { | |
1976 | if (mmc_card_removed(card)) | |
1977 | req->cmd_flags |= REQ_QUIET; | |
1978 | while (ret) | |
1979 | ret = blk_end_request(req, -EIO, | |
1980 | blk_rq_cur_bytes(req)); | |
1981 | } | |
1da177e4 | 1982 | |
ee8a43a5 PF |
1983 | start_new_req: |
1984 | if (rqc) { | |
7a81902f SJ |
1985 | if (mmc_card_removed(card)) { |
1986 | rqc->cmd_flags |= REQ_QUIET; | |
1987 | blk_end_request_all(rqc, -EIO); | |
1988 | } else { | |
ce39f9d1 SJ |
1989 | /* |
1990 | * If current request is packed, it needs to put back. | |
1991 | */ | |
1992 | if (mmc_packed_cmd(mq->mqrq_cur->cmd_type)) | |
1993 | mmc_blk_revert_packed_req(mq, mq->mqrq_cur); | |
1994 | ||
7a81902f SJ |
1995 | mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq); |
1996 | mmc_start_req(card->host, | |
1997 | &mq->mqrq_cur->mmc_active, NULL); | |
1998 | } | |
ee8a43a5 PF |
1999 | } |
2000 | ||
1da177e4 LT |
2001 | return 0; |
2002 | } | |
2003 | ||
bd788c96 AH |
2004 | static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) |
2005 | { | |
1a258db6 AW |
2006 | int ret; |
2007 | struct mmc_blk_data *md = mq->data; | |
2008 | struct mmc_card *card = md->queue.card; | |
2220eedf KD |
2009 | struct mmc_host *host = card->host; |
2010 | unsigned long flags; | |
f662ae48 | 2011 | unsigned int cmd_flags = req ? req->cmd_flags : 0; |
1a258db6 | 2012 | |
ee8a43a5 PF |
2013 | if (req && !mq->mqrq_prev->req) |
2014 | /* claim host only for the first request */ | |
e94cfef6 | 2015 | mmc_get_card(card); |
ee8a43a5 | 2016 | |
371a689f AW |
2017 | ret = mmc_blk_part_switch(card, md); |
2018 | if (ret) { | |
0d7d85ca | 2019 | if (req) { |
ecf8b5d0 | 2020 | blk_end_request_all(req, -EIO); |
0d7d85ca | 2021 | } |
371a689f AW |
2022 | ret = 0; |
2023 | goto out; | |
2024 | } | |
1a258db6 | 2025 | |
2220eedf | 2026 | mq->flags &= ~MMC_QUEUE_NEW_REQUEST; |
f662ae48 | 2027 | if (cmd_flags & REQ_DISCARD) { |
ee8a43a5 PF |
2028 | /* complete ongoing async transfer before issuing discard */ |
2029 | if (card->host->areq) | |
2030 | mmc_blk_issue_rw_rq(mq, NULL); | |
5204d00f | 2031 | if (req->cmd_flags & REQ_SECURE) |
1a258db6 | 2032 | ret = mmc_blk_issue_secdiscard_rq(mq, req); |
49804548 | 2033 | else |
1a258db6 | 2034 | ret = mmc_blk_issue_discard_rq(mq, req); |
f662ae48 | 2035 | } else if (cmd_flags & REQ_FLUSH) { |
393f9a08 JC |
2036 | /* complete ongoing async transfer before issuing flush */ |
2037 | if (card->host->areq) | |
2038 | mmc_blk_issue_rw_rq(mq, NULL); | |
1a258db6 | 2039 | ret = mmc_blk_issue_flush(mq, req); |
49804548 | 2040 | } else { |
2220eedf KD |
2041 | if (!req && host->areq) { |
2042 | spin_lock_irqsave(&host->context_info.lock, flags); | |
2043 | host->context_info.is_waiting_last_req = true; | |
2044 | spin_unlock_irqrestore(&host->context_info.lock, flags); | |
2045 | } | |
1a258db6 | 2046 | ret = mmc_blk_issue_rw_rq(mq, req); |
49804548 | 2047 | } |
1a258db6 | 2048 | |
371a689f | 2049 | out: |
ef3a69c7 | 2050 | if ((!req && !(mq->flags & MMC_QUEUE_NEW_REQUEST)) || |
f662ae48 | 2051 | (cmd_flags & MMC_REQ_SPECIAL_MASK)) |
ef3a69c7 SJ |
2052 | /* |
2053 | * Release host when there are no more requests | |
2054 | * and after special request(discard, flush) is done. | |
2055 | * In case sepecial request, there is no reentry to | |
2056 | * the 'mmc_blk_issue_rq' with 'mqrq_prev->req'. | |
2057 | */ | |
e94cfef6 | 2058 | mmc_put_card(card); |
1a258db6 | 2059 | return ret; |
bd788c96 | 2060 | } |
1da177e4 | 2061 | |
a6f6c96b RK |
2062 | static inline int mmc_blk_readonly(struct mmc_card *card) |
2063 | { | |
2064 | return mmc_card_readonly(card) || | |
2065 | !(card->csd.cmdclass & CCC_BLOCK_WRITE); | |
2066 | } | |
2067 | ||
371a689f AW |
2068 | static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, |
2069 | struct device *parent, | |
2070 | sector_t size, | |
2071 | bool default_ro, | |
add710ea JR |
2072 | const char *subname, |
2073 | int area_type) | |
1da177e4 LT |
2074 | { |
2075 | struct mmc_blk_data *md; | |
2076 | int devidx, ret; | |
2077 | ||
5e71b7a6 OJ |
2078 | devidx = find_first_zero_bit(dev_use, max_devices); |
2079 | if (devidx >= max_devices) | |
1da177e4 LT |
2080 | return ERR_PTR(-ENOSPC); |
2081 | __set_bit(devidx, dev_use); | |
2082 | ||
dd00cc48 | 2083 | md = kzalloc(sizeof(struct mmc_blk_data), GFP_KERNEL); |
a6f6c96b RK |
2084 | if (!md) { |
2085 | ret = -ENOMEM; | |
2086 | goto out; | |
2087 | } | |
1da177e4 | 2088 | |
f06c9153 AW |
2089 | /* |
2090 | * !subname implies we are creating main mmc_blk_data that will be | |
fc95e30b | 2091 | * associated with mmc_card with dev_set_drvdata. Due to device |
f06c9153 AW |
2092 | * partitions, devidx will not coincide with a per-physical card |
2093 | * index anymore so we keep track of a name index. | |
2094 | */ | |
2095 | if (!subname) { | |
2096 | md->name_idx = find_first_zero_bit(name_use, max_devices); | |
2097 | __set_bit(md->name_idx, name_use); | |
add710ea | 2098 | } else |
f06c9153 AW |
2099 | md->name_idx = ((struct mmc_blk_data *) |
2100 | dev_to_disk(parent)->private_data)->name_idx; | |
2101 | ||
add710ea JR |
2102 | md->area_type = area_type; |
2103 | ||
a6f6c96b RK |
2104 | /* |
2105 | * Set the read-only status based on the supported commands | |
2106 | * and the write protect switch. | |
2107 | */ | |
2108 | md->read_only = mmc_blk_readonly(card); | |
1da177e4 | 2109 | |
5e71b7a6 | 2110 | md->disk = alloc_disk(perdev_minors); |
a6f6c96b RK |
2111 | if (md->disk == NULL) { |
2112 | ret = -ENOMEM; | |
2113 | goto err_kfree; | |
2114 | } | |
1da177e4 | 2115 | |
a6f6c96b | 2116 | spin_lock_init(&md->lock); |
371a689f | 2117 | INIT_LIST_HEAD(&md->part); |
a6f6c96b | 2118 | md->usage = 1; |
1da177e4 | 2119 | |
d09408ad | 2120 | ret = mmc_init_queue(&md->queue, card, &md->lock, subname); |
a6f6c96b RK |
2121 | if (ret) |
2122 | goto err_putdisk; | |
1da177e4 | 2123 | |
a6f6c96b RK |
2124 | md->queue.issue_fn = mmc_blk_issue_rq; |
2125 | md->queue.data = md; | |
d2b18394 | 2126 | |
fe6b4c88 | 2127 | md->disk->major = MMC_BLOCK_MAJOR; |
5e71b7a6 | 2128 | md->disk->first_minor = devidx * perdev_minors; |
a6f6c96b RK |
2129 | md->disk->fops = &mmc_bdops; |
2130 | md->disk->private_data = md; | |
2131 | md->disk->queue = md->queue.queue; | |
371a689f AW |
2132 | md->disk->driverfs_dev = parent; |
2133 | set_disk_ro(md->disk, md->read_only || default_ro); | |
f5b4d71f | 2134 | if (area_type & (MMC_BLK_DATA_AREA_RPMB | MMC_BLK_DATA_AREA_BOOT)) |
53d8f974 | 2135 | md->disk->flags |= GENHD_FL_NO_PART_SCAN; |
a6f6c96b RK |
2136 | |
2137 | /* | |
2138 | * As discussed on lkml, GENHD_FL_REMOVABLE should: | |
2139 | * | |
2140 | * - be set for removable media with permanent block devices | |
2141 | * - be unset for removable block devices with permanent media | |
2142 | * | |
2143 | * Since MMC block devices clearly fall under the second | |
2144 | * case, we do not set GENHD_FL_REMOVABLE. Userspace | |
2145 | * should use the block device creation/destruction hotplug | |
2146 | * messages to tell when the card is present. | |
2147 | */ | |
2148 | ||
f06c9153 | 2149 | snprintf(md->disk->disk_name, sizeof(md->disk->disk_name), |
fe821915 | 2150 | "mmcblk%u%s", md->name_idx, subname ? subname : ""); |
a6f6c96b | 2151 | |
a5075eb9 SD |
2152 | if (mmc_card_mmc(card)) |
2153 | blk_queue_logical_block_size(md->queue.queue, | |
2154 | card->ext_csd.data_sector_size); | |
2155 | else | |
2156 | blk_queue_logical_block_size(md->queue.queue, 512); | |
2157 | ||
371a689f | 2158 | set_capacity(md->disk, size); |
d0c97cfb | 2159 | |
f0d89972 AW |
2160 | if (mmc_host_cmd23(card->host)) { |
2161 | if (mmc_card_mmc(card) || | |
2162 | (mmc_card_sd(card) && | |
2163 | card->scr.cmds & SD_SCR_CMD23_SUPPORT)) | |
2164 | md->flags |= MMC_BLK_CMD23; | |
2165 | } | |
d0c97cfb AW |
2166 | |
2167 | if (mmc_card_mmc(card) && | |
2168 | md->flags & MMC_BLK_CMD23 && | |
2169 | ((card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN) || | |
2170 | card->ext_csd.rel_sectors)) { | |
2171 | md->flags |= MMC_BLK_REL_WR; | |
2172 | blk_queue_flush(md->queue.queue, REQ_FLUSH | REQ_FUA); | |
2173 | } | |
2174 | ||
ce39f9d1 SJ |
2175 | if (mmc_card_mmc(card) && |
2176 | (area_type == MMC_BLK_DATA_AREA_MAIN) && | |
2177 | (md->flags & MMC_BLK_CMD23) && | |
2178 | card->ext_csd.packed_event_en) { | |
2179 | if (!mmc_packed_init(&md->queue, card)) | |
2180 | md->flags |= MMC_BLK_PACKED_CMD; | |
2181 | } | |
2182 | ||
371a689f AW |
2183 | return md; |
2184 | ||
2185 | err_putdisk: | |
2186 | put_disk(md->disk); | |
2187 | err_kfree: | |
2188 | kfree(md); | |
2189 | out: | |
2190 | return ERR_PTR(ret); | |
2191 | } | |
2192 | ||
2193 | static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card) | |
2194 | { | |
2195 | sector_t size; | |
2196 | struct mmc_blk_data *md; | |
a6f6c96b | 2197 | |
85a18ad9 PO |
2198 | if (!mmc_card_sd(card) && mmc_card_blockaddr(card)) { |
2199 | /* | |
2200 | * The EXT_CSD sector count is in number or 512 byte | |
2201 | * sectors. | |
2202 | */ | |
371a689f | 2203 | size = card->ext_csd.sectors; |
85a18ad9 PO |
2204 | } else { |
2205 | /* | |
2206 | * The CSD capacity field is in units of read_blkbits. | |
2207 | * set_capacity takes units of 512 bytes. | |
2208 | */ | |
371a689f | 2209 | size = card->csd.capacity << (card->csd.read_blkbits - 9); |
85a18ad9 | 2210 | } |
371a689f | 2211 | |
add710ea JR |
2212 | md = mmc_blk_alloc_req(card, &card->dev, size, false, NULL, |
2213 | MMC_BLK_DATA_AREA_MAIN); | |
1da177e4 | 2214 | return md; |
371a689f | 2215 | } |
a6f6c96b | 2216 | |
371a689f AW |
2217 | static int mmc_blk_alloc_part(struct mmc_card *card, |
2218 | struct mmc_blk_data *md, | |
2219 | unsigned int part_type, | |
2220 | sector_t size, | |
2221 | bool default_ro, | |
add710ea JR |
2222 | const char *subname, |
2223 | int area_type) | |
371a689f AW |
2224 | { |
2225 | char cap_str[10]; | |
2226 | struct mmc_blk_data *part_md; | |
2227 | ||
2228 | part_md = mmc_blk_alloc_req(card, disk_to_dev(md->disk), size, default_ro, | |
add710ea | 2229 | subname, area_type); |
371a689f AW |
2230 | if (IS_ERR(part_md)) |
2231 | return PTR_ERR(part_md); | |
2232 | part_md->part_type = part_type; | |
2233 | list_add(&part_md->part, &md->part); | |
2234 | ||
2235 | string_get_size((u64)get_capacity(part_md->disk) << 9, STRING_UNITS_2, | |
2236 | cap_str, sizeof(cap_str)); | |
a3c76eb9 | 2237 | pr_info("%s: %s %s partition %u %s\n", |
371a689f AW |
2238 | part_md->disk->disk_name, mmc_card_id(card), |
2239 | mmc_card_name(card), part_md->part_type, cap_str); | |
2240 | return 0; | |
2241 | } | |
2242 | ||
e0c368d5 NJ |
2243 | /* MMC Physical partitions consist of two boot partitions and |
2244 | * up to four general purpose partitions. | |
2245 | * For each partition enabled in EXT_CSD a block device will be allocatedi | |
2246 | * to provide access to the partition. | |
2247 | */ | |
2248 | ||
371a689f AW |
2249 | static int mmc_blk_alloc_parts(struct mmc_card *card, struct mmc_blk_data *md) |
2250 | { | |
e0c368d5 | 2251 | int idx, ret = 0; |
371a689f AW |
2252 | |
2253 | if (!mmc_card_mmc(card)) | |
2254 | return 0; | |
2255 | ||
e0c368d5 NJ |
2256 | for (idx = 0; idx < card->nr_parts; idx++) { |
2257 | if (card->part[idx].size) { | |
2258 | ret = mmc_blk_alloc_part(card, md, | |
2259 | card->part[idx].part_cfg, | |
2260 | card->part[idx].size >> 9, | |
2261 | card->part[idx].force_ro, | |
add710ea JR |
2262 | card->part[idx].name, |
2263 | card->part[idx].area_type); | |
e0c368d5 NJ |
2264 | if (ret) |
2265 | return ret; | |
2266 | } | |
371a689f AW |
2267 | } |
2268 | ||
2269 | return ret; | |
1da177e4 LT |
2270 | } |
2271 | ||
371a689f AW |
2272 | static void mmc_blk_remove_req(struct mmc_blk_data *md) |
2273 | { | |
add710ea JR |
2274 | struct mmc_card *card; |
2275 | ||
371a689f | 2276 | if (md) { |
fdfa20c1 PT |
2277 | /* |
2278 | * Flush remaining requests and free queues. It | |
2279 | * is freeing the queue that stops new requests | |
2280 | * from being accepted. | |
2281 | */ | |
8efb83a2 | 2282 | card = md->queue.card; |
fdfa20c1 PT |
2283 | mmc_cleanup_queue(&md->queue); |
2284 | if (md->flags & MMC_BLK_PACKED_CMD) | |
2285 | mmc_packed_clean(&md->queue); | |
371a689f AW |
2286 | if (md->disk->flags & GENHD_FL_UP) { |
2287 | device_remove_file(disk_to_dev(md->disk), &md->force_ro); | |
add710ea JR |
2288 | if ((md->area_type & MMC_BLK_DATA_AREA_BOOT) && |
2289 | card->ext_csd.boot_ro_lockable) | |
2290 | device_remove_file(disk_to_dev(md->disk), | |
2291 | &md->power_ro_lock); | |
371a689f | 2292 | |
371a689f AW |
2293 | del_gendisk(md->disk); |
2294 | } | |
371a689f AW |
2295 | mmc_blk_put(md); |
2296 | } | |
2297 | } | |
2298 | ||
2299 | static void mmc_blk_remove_parts(struct mmc_card *card, | |
2300 | struct mmc_blk_data *md) | |
2301 | { | |
2302 | struct list_head *pos, *q; | |
2303 | struct mmc_blk_data *part_md; | |
2304 | ||
f06c9153 | 2305 | __clear_bit(md->name_idx, name_use); |
371a689f AW |
2306 | list_for_each_safe(pos, q, &md->part) { |
2307 | part_md = list_entry(pos, struct mmc_blk_data, part); | |
2308 | list_del(pos); | |
2309 | mmc_blk_remove_req(part_md); | |
2310 | } | |
2311 | } | |
2312 | ||
2313 | static int mmc_add_disk(struct mmc_blk_data *md) | |
2314 | { | |
2315 | int ret; | |
add710ea | 2316 | struct mmc_card *card = md->queue.card; |
371a689f AW |
2317 | |
2318 | add_disk(md->disk); | |
2319 | md->force_ro.show = force_ro_show; | |
2320 | md->force_ro.store = force_ro_store; | |
641c3187 | 2321 | sysfs_attr_init(&md->force_ro.attr); |
371a689f AW |
2322 | md->force_ro.attr.name = "force_ro"; |
2323 | md->force_ro.attr.mode = S_IRUGO | S_IWUSR; | |
2324 | ret = device_create_file(disk_to_dev(md->disk), &md->force_ro); | |
2325 | if (ret) | |
add710ea JR |
2326 | goto force_ro_fail; |
2327 | ||
2328 | if ((md->area_type & MMC_BLK_DATA_AREA_BOOT) && | |
2329 | card->ext_csd.boot_ro_lockable) { | |
88187398 | 2330 | umode_t mode; |
add710ea JR |
2331 | |
2332 | if (card->ext_csd.boot_ro_lock & EXT_CSD_BOOT_WP_B_PWR_WP_DIS) | |
2333 | mode = S_IRUGO; | |
2334 | else | |
2335 | mode = S_IRUGO | S_IWUSR; | |
2336 | ||
2337 | md->power_ro_lock.show = power_ro_lock_show; | |
2338 | md->power_ro_lock.store = power_ro_lock_store; | |
00d9ac08 | 2339 | sysfs_attr_init(&md->power_ro_lock.attr); |
add710ea JR |
2340 | md->power_ro_lock.attr.mode = mode; |
2341 | md->power_ro_lock.attr.name = | |
2342 | "ro_lock_until_next_power_on"; | |
2343 | ret = device_create_file(disk_to_dev(md->disk), | |
2344 | &md->power_ro_lock); | |
2345 | if (ret) | |
2346 | goto power_ro_lock_fail; | |
2347 | } | |
2348 | return ret; | |
2349 | ||
2350 | power_ro_lock_fail: | |
2351 | device_remove_file(disk_to_dev(md->disk), &md->force_ro); | |
2352 | force_ro_fail: | |
2353 | del_gendisk(md->disk); | |
371a689f AW |
2354 | |
2355 | return ret; | |
2356 | } | |
2357 | ||
c59d4473 CB |
2358 | #define CID_MANFID_SANDISK 0x2 |
2359 | #define CID_MANFID_TOSHIBA 0x11 | |
2360 | #define CID_MANFID_MICRON 0x13 | |
3550ccdb | 2361 | #define CID_MANFID_SAMSUNG 0x15 |
c59d4473 | 2362 | |
6f60c222 AW |
2363 | static const struct mmc_fixup blk_fixups[] = |
2364 | { | |
c59d4473 CB |
2365 | MMC_FIXUP("SEM02G", CID_MANFID_SANDISK, 0x100, add_quirk, |
2366 | MMC_QUIRK_INAND_CMD38), | |
2367 | MMC_FIXUP("SEM04G", CID_MANFID_SANDISK, 0x100, add_quirk, | |
2368 | MMC_QUIRK_INAND_CMD38), | |
2369 | MMC_FIXUP("SEM08G", CID_MANFID_SANDISK, 0x100, add_quirk, | |
2370 | MMC_QUIRK_INAND_CMD38), | |
2371 | MMC_FIXUP("SEM16G", CID_MANFID_SANDISK, 0x100, add_quirk, | |
2372 | MMC_QUIRK_INAND_CMD38), | |
2373 | MMC_FIXUP("SEM32G", CID_MANFID_SANDISK, 0x100, add_quirk, | |
2374 | MMC_QUIRK_INAND_CMD38), | |
d0c97cfb AW |
2375 | |
2376 | /* | |
2377 | * Some MMC cards experience performance degradation with CMD23 | |
2378 | * instead of CMD12-bounded multiblock transfers. For now we'll | |
2379 | * black list what's bad... | |
2380 | * - Certain Toshiba cards. | |
2381 | * | |
2382 | * N.B. This doesn't affect SD cards. | |
2383 | */ | |
c59d4473 | 2384 | MMC_FIXUP("MMC08G", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc, |
d0c97cfb | 2385 | MMC_QUIRK_BLK_NO_CMD23), |
c59d4473 | 2386 | MMC_FIXUP("MMC16G", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc, |
d0c97cfb | 2387 | MMC_QUIRK_BLK_NO_CMD23), |
c59d4473 | 2388 | MMC_FIXUP("MMC32G", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc, |
d0c97cfb | 2389 | MMC_QUIRK_BLK_NO_CMD23), |
6de5fc9c SNX |
2390 | |
2391 | /* | |
2392 | * Some Micron MMC cards needs longer data read timeout than | |
2393 | * indicated in CSD. | |
2394 | */ | |
c59d4473 | 2395 | MMC_FIXUP(CID_NAME_ANY, CID_MANFID_MICRON, 0x200, add_quirk_mmc, |
6de5fc9c SNX |
2396 | MMC_QUIRK_LONG_READ_TIME), |
2397 | ||
3550ccdb IC |
2398 | /* |
2399 | * On these Samsung MoviNAND parts, performing secure erase or | |
2400 | * secure trim can result in unrecoverable corruption due to a | |
2401 | * firmware bug. | |
2402 | */ | |
2403 | MMC_FIXUP("M8G2FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, | |
2404 | MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), | |
2405 | MMC_FIXUP("MAG4FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, | |
2406 | MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), | |
2407 | MMC_FIXUP("MBG8FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, | |
2408 | MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), | |
2409 | MMC_FIXUP("MCGAFA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, | |
2410 | MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), | |
2411 | MMC_FIXUP("VAL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, | |
2412 | MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), | |
2413 | MMC_FIXUP("VYL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, | |
2414 | MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), | |
2415 | MMC_FIXUP("KYL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, | |
2416 | MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), | |
2417 | MMC_FIXUP("VZL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, | |
2418 | MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), | |
2419 | ||
6f60c222 AW |
2420 | END_FIXUP |
2421 | }; | |
2422 | ||
6685ac62 | 2423 | static int mmc_blk_probe(struct device *dev) |
1da177e4 | 2424 | { |
6685ac62 | 2425 | struct mmc_card *card = mmc_dev_to_card(dev); |
371a689f | 2426 | struct mmc_blk_data *md, *part_md; |
a7bbb573 PO |
2427 | char cap_str[10]; |
2428 | ||
912490db PO |
2429 | /* |
2430 | * Check that the card supports the command class(es) we need. | |
2431 | */ | |
2432 | if (!(card->csd.cmdclass & CCC_BLOCK_READ)) | |
1da177e4 LT |
2433 | return -ENODEV; |
2434 | ||
5204d00f LC |
2435 | mmc_fixup_device(card, blk_fixups); |
2436 | ||
1da177e4 LT |
2437 | md = mmc_blk_alloc(card); |
2438 | if (IS_ERR(md)) | |
2439 | return PTR_ERR(md); | |
2440 | ||
444122fd | 2441 | string_get_size((u64)get_capacity(md->disk) << 9, STRING_UNITS_2, |
a7bbb573 | 2442 | cap_str, sizeof(cap_str)); |
a3c76eb9 | 2443 | pr_info("%s: %s %s %s %s\n", |
1da177e4 | 2444 | md->disk->disk_name, mmc_card_id(card), mmc_card_name(card), |
a7bbb573 | 2445 | cap_str, md->read_only ? "(ro)" : ""); |
1da177e4 | 2446 | |
371a689f AW |
2447 | if (mmc_blk_alloc_parts(card, md)) |
2448 | goto out; | |
2449 | ||
fc95e30b | 2450 | dev_set_drvdata(dev, md); |
6f60c222 | 2451 | |
371a689f AW |
2452 | if (mmc_add_disk(md)) |
2453 | goto out; | |
2454 | ||
2455 | list_for_each_entry(part_md, &md->part, part) { | |
2456 | if (mmc_add_disk(part_md)) | |
2457 | goto out; | |
2458 | } | |
e94cfef6 UH |
2459 | |
2460 | pm_runtime_set_autosuspend_delay(&card->dev, 3000); | |
2461 | pm_runtime_use_autosuspend(&card->dev); | |
2462 | ||
2463 | /* | |
2464 | * Don't enable runtime PM for SD-combo cards here. Leave that | |
2465 | * decision to be taken during the SDIO init sequence instead. | |
2466 | */ | |
2467 | if (card->type != MMC_TYPE_SD_COMBO) { | |
2468 | pm_runtime_set_active(&card->dev); | |
2469 | pm_runtime_enable(&card->dev); | |
2470 | } | |
2471 | ||
1da177e4 LT |
2472 | return 0; |
2473 | ||
2474 | out: | |
371a689f AW |
2475 | mmc_blk_remove_parts(card, md); |
2476 | mmc_blk_remove_req(md); | |
5865f287 | 2477 | return 0; |
1da177e4 LT |
2478 | } |
2479 | ||
6685ac62 | 2480 | static int mmc_blk_remove(struct device *dev) |
1da177e4 | 2481 | { |
6685ac62 | 2482 | struct mmc_card *card = mmc_dev_to_card(dev); |
fc95e30b | 2483 | struct mmc_blk_data *md = dev_get_drvdata(dev); |
1da177e4 | 2484 | |
371a689f | 2485 | mmc_blk_remove_parts(card, md); |
e94cfef6 | 2486 | pm_runtime_get_sync(&card->dev); |
ddd6fa7e AH |
2487 | mmc_claim_host(card->host); |
2488 | mmc_blk_part_switch(card, md); | |
2489 | mmc_release_host(card->host); | |
e94cfef6 UH |
2490 | if (card->type != MMC_TYPE_SD_COMBO) |
2491 | pm_runtime_disable(&card->dev); | |
2492 | pm_runtime_put_noidle(&card->dev); | |
371a689f | 2493 | mmc_blk_remove_req(md); |
fc95e30b | 2494 | dev_set_drvdata(dev, NULL); |
6685ac62 UH |
2495 | |
2496 | return 0; | |
1da177e4 LT |
2497 | } |
2498 | ||
6685ac62 | 2499 | static int _mmc_blk_suspend(struct device *dev) |
1da177e4 | 2500 | { |
371a689f | 2501 | struct mmc_blk_data *part_md; |
fc95e30b | 2502 | struct mmc_blk_data *md = dev_get_drvdata(dev); |
1da177e4 LT |
2503 | |
2504 | if (md) { | |
2505 | mmc_queue_suspend(&md->queue); | |
371a689f AW |
2506 | list_for_each_entry(part_md, &md->part, part) { |
2507 | mmc_queue_suspend(&part_md->queue); | |
2508 | } | |
1da177e4 LT |
2509 | } |
2510 | return 0; | |
2511 | } | |
2512 | ||
6685ac62 | 2513 | static void mmc_blk_shutdown(struct device *dev) |
76287748 | 2514 | { |
6685ac62 | 2515 | _mmc_blk_suspend(dev); |
76287748 UH |
2516 | } |
2517 | ||
0967edc6 UH |
2518 | #ifdef CONFIG_PM_SLEEP |
2519 | static int mmc_blk_suspend(struct device *dev) | |
76287748 | 2520 | { |
6685ac62 | 2521 | return _mmc_blk_suspend(dev); |
76287748 UH |
2522 | } |
2523 | ||
0967edc6 | 2524 | static int mmc_blk_resume(struct device *dev) |
1da177e4 | 2525 | { |
371a689f | 2526 | struct mmc_blk_data *part_md; |
fc95e30b | 2527 | struct mmc_blk_data *md = dev_get_drvdata(dev); |
1da177e4 LT |
2528 | |
2529 | if (md) { | |
371a689f AW |
2530 | /* |
2531 | * Resume involves the card going into idle state, | |
2532 | * so current partition is always the main one. | |
2533 | */ | |
2534 | md->part_curr = md->part_type; | |
1da177e4 | 2535 | mmc_queue_resume(&md->queue); |
371a689f AW |
2536 | list_for_each_entry(part_md, &md->part, part) { |
2537 | mmc_queue_resume(&part_md->queue); | |
2538 | } | |
1da177e4 LT |
2539 | } |
2540 | return 0; | |
2541 | } | |
1da177e4 LT |
2542 | #endif |
2543 | ||
0967edc6 UH |
2544 | static SIMPLE_DEV_PM_OPS(mmc_blk_pm_ops, mmc_blk_suspend, mmc_blk_resume); |
2545 | ||
6685ac62 UH |
2546 | static struct device_driver mmc_driver = { |
2547 | .name = "mmcblk", | |
2548 | .pm = &mmc_blk_pm_ops, | |
1da177e4 LT |
2549 | .probe = mmc_blk_probe, |
2550 | .remove = mmc_blk_remove, | |
76287748 | 2551 | .shutdown = mmc_blk_shutdown, |
1da177e4 LT |
2552 | }; |
2553 | ||
2554 | static int __init mmc_blk_init(void) | |
2555 | { | |
9d4e98e9 | 2556 | int res; |
1da177e4 | 2557 | |
5e71b7a6 OJ |
2558 | if (perdev_minors != CONFIG_MMC_BLOCK_MINORS) |
2559 | pr_info("mmcblk: using %d minors per device\n", perdev_minors); | |
2560 | ||
a26eba61 | 2561 | max_devices = min(MAX_DEVICES, (1 << MINORBITS) / perdev_minors); |
5e71b7a6 | 2562 | |
fe6b4c88 PO |
2563 | res = register_blkdev(MMC_BLOCK_MAJOR, "mmc"); |
2564 | if (res) | |
1da177e4 | 2565 | goto out; |
1da177e4 | 2566 | |
9d4e98e9 AM |
2567 | res = mmc_register_driver(&mmc_driver); |
2568 | if (res) | |
2569 | goto out2; | |
1da177e4 | 2570 | |
9d4e98e9 AM |
2571 | return 0; |
2572 | out2: | |
2573 | unregister_blkdev(MMC_BLOCK_MAJOR, "mmc"); | |
1da177e4 LT |
2574 | out: |
2575 | return res; | |
2576 | } | |
2577 | ||
2578 | static void __exit mmc_blk_exit(void) | |
2579 | { | |
2580 | mmc_unregister_driver(&mmc_driver); | |
fe6b4c88 | 2581 | unregister_blkdev(MMC_BLOCK_MAJOR, "mmc"); |
1da177e4 LT |
2582 | } |
2583 | ||
2584 | module_init(mmc_blk_init); | |
2585 | module_exit(mmc_blk_exit); | |
2586 | ||
2587 | MODULE_LICENSE("GPL"); | |
2588 | MODULE_DESCRIPTION("Multimedia Card (MMC) block device driver"); | |
2589 |