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> | |
1da177e4 | 37 | |
6fa3eb70 S |
38 | #define CREATE_TRACE_POINTS |
39 | #include <trace/events/mmc.h> | |
40 | ||
cb87ea28 | 41 | #include <linux/mmc/ioctl.h> |
1da177e4 | 42 | #include <linux/mmc/card.h> |
385e3227 | 43 | #include <linux/mmc/host.h> |
da7fbe58 PO |
44 | #include <linux/mmc/mmc.h> |
45 | #include <linux/mmc/sd.h> | |
1da177e4 | 46 | |
1da177e4 LT |
47 | #include <asm/uaccess.h> |
48 | ||
98ac2162 | 49 | #include "queue.h" |
6fa3eb70 S |
50 | #include <mach/mtk_meminfo.h> |
51 | ||
52 | //add vmstat info with block tag log | |
53 | #include <linux/vmstat.h> | |
54 | #define FEATURE_STORAGE_VMSTAT_LOGGER | |
55 | ||
56 | ||
57 | #include <linux/xlog.h> | |
58 | #include <asm/div64.h> | |
59 | #include <linux/vmalloc.h> | |
60 | ||
61 | #include <linux/mmc/sd_misc.h> | |
62 | ||
63 | #define MET_USER_EVENT_SUPPORT | |
64 | #include <linux/met_drv.h> | |
65 | ||
66 | #define FEATURE_STORAGE_PERF_INDEX | |
67 | //enable storage log in user load | |
68 | #if 0 | |
69 | #ifdef USER_BUILD_KERNEL | |
70 | #undef FEATURE_STORAGE_PERF_INDEX | |
71 | #endif | |
72 | #endif | |
1da177e4 | 73 | |
6b0b6285 | 74 | MODULE_ALIAS("mmc:block"); |
5e71b7a6 OJ |
75 | #ifdef MODULE_PARAM_PREFIX |
76 | #undef MODULE_PARAM_PREFIX | |
77 | #endif | |
78 | #define MODULE_PARAM_PREFIX "mmcblk." | |
79 | ||
6a7a6b45 AW |
80 | #define INAND_CMD38_ARG_EXT_CSD 113 |
81 | #define INAND_CMD38_ARG_ERASE 0x00 | |
82 | #define INAND_CMD38_ARG_TRIM 0x01 | |
83 | #define INAND_CMD38_ARG_SECERASE 0x80 | |
84 | #define INAND_CMD38_ARG_SECTRIM1 0x81 | |
85 | #define INAND_CMD38_ARG_SECTRIM2 0x88 | |
8fee476b | 86 | #define MMC_BLK_TIMEOUT_MS (10 * 60 * 1000) /* 10 minute timeout */ |
6a7a6b45 | 87 | |
ce39f9d1 SJ |
88 | #define mmc_req_rel_wr(req) (((req->cmd_flags & REQ_FUA) || \ |
89 | (req->cmd_flags & REQ_META)) && \ | |
90 | (rq_data_dir(req) == WRITE)) | |
91 | #define PACKED_CMD_VER 0x01 | |
92 | #define PACKED_CMD_WR 0x02 | |
93 | ||
5e71b7a6 | 94 | static DEFINE_MUTEX(block_mutex); |
6b0b6285 | 95 | |
1da177e4 | 96 | /* |
5e71b7a6 OJ |
97 | * The defaults come from config options but can be overriden by module |
98 | * or bootarg options. | |
1da177e4 | 99 | */ |
5e71b7a6 | 100 | static int perdev_minors = CONFIG_MMC_BLOCK_MINORS; |
1dff3144 | 101 | |
5e71b7a6 OJ |
102 | /* |
103 | * We've only got one major, so number of mmcblk devices is | |
104 | * limited to 256 / number of minors per device. | |
105 | */ | |
106 | static int max_devices; | |
107 | ||
108 | /* 256 minors, so at most 256 separate devices */ | |
109 | static DECLARE_BITMAP(dev_use, 256); | |
f06c9153 | 110 | static DECLARE_BITMAP(name_use, 256); |
1da177e4 | 111 | |
1da177e4 LT |
112 | /* |
113 | * There is one mmc_blk_data per slot. | |
114 | */ | |
115 | struct mmc_blk_data { | |
116 | spinlock_t lock; | |
117 | struct gendisk *disk; | |
118 | struct mmc_queue queue; | |
371a689f | 119 | struct list_head part; |
1da177e4 | 120 | |
d0c97cfb AW |
121 | unsigned int flags; |
122 | #define MMC_BLK_CMD23 (1 << 0) /* Can do SET_BLOCK_COUNT for multiblock */ | |
123 | #define MMC_BLK_REL_WR (1 << 1) /* MMC Reliable write support */ | |
ce39f9d1 | 124 | #define MMC_BLK_PACKED_CMD (1 << 2) /* MMC packed command support */ |
d0c97cfb | 125 | |
1da177e4 | 126 | unsigned int usage; |
a6f6c96b | 127 | unsigned int read_only; |
371a689f | 128 | unsigned int part_type; |
f06c9153 | 129 | unsigned int name_idx; |
67716327 AH |
130 | unsigned int reset_done; |
131 | #define MMC_BLK_READ BIT(0) | |
132 | #define MMC_BLK_WRITE BIT(1) | |
133 | #define MMC_BLK_DISCARD BIT(2) | |
134 | #define MMC_BLK_SECDISCARD BIT(3) | |
371a689f AW |
135 | |
136 | /* | |
137 | * Only set in main mmc_blk_data associated | |
138 | * with mmc_card with mmc_set_drvdata, and keeps | |
139 | * track of the current selected device partition. | |
140 | */ | |
141 | unsigned int part_curr; | |
142 | struct device_attribute force_ro; | |
add710ea JR |
143 | struct device_attribute power_ro_lock; |
144 | int area_type; | |
1da177e4 LT |
145 | }; |
146 | ||
a621aaed | 147 | static DEFINE_MUTEX(open_lock); |
1da177e4 | 148 | |
ce39f9d1 SJ |
149 | enum { |
150 | MMC_PACKED_NR_IDX = -1, | |
151 | MMC_PACKED_NR_ZERO, | |
152 | MMC_PACKED_NR_SINGLE, | |
153 | }; | |
154 | ||
5e71b7a6 OJ |
155 | module_param(perdev_minors, int, 0444); |
156 | MODULE_PARM_DESC(perdev_minors, "Minors numbers to allocate per device"); | |
157 | ||
8d1e977d LP |
158 | static inline int mmc_blk_part_switch(struct mmc_card *card, |
159 | struct mmc_blk_data *md); | |
160 | static int get_card_status(struct mmc_card *card, u32 *status, int retries); | |
161 | ||
6fa3eb70 S |
162 | #ifndef CONFIG_MTK_FPGA |
163 | #include <linux/met_ftrace_bio.h> | |
164 | #endif | |
165 | ||
166 | char mmc_get_rw_type(u32 opcode) | |
167 | { | |
168 | switch (opcode) | |
169 | { | |
170 | case MMC_READ_SINGLE_BLOCK: | |
171 | case MMC_READ_MULTIPLE_BLOCK: | |
172 | return 'R'; | |
173 | case MMC_WRITE_BLOCK: | |
174 | case MMC_WRITE_MULTIPLE_BLOCK: | |
175 | return 'W'; | |
176 | default: | |
177 | // Unknown opcode!!! | |
178 | return 'X'; | |
179 | } | |
180 | } | |
181 | ||
182 | inline int check_met_mmc_async_req_legal(struct mmc_host *host, struct mmc_async_req *areq) | |
183 | { | |
184 | int is_legal = 0; | |
185 | ||
186 | if (!((host == NULL) || (areq == NULL) || (areq->mrq == NULL) | |
187 | || (areq->mrq->cmd == NULL) || (areq->mrq->data == NULL) | |
188 | || (host->card == NULL))) { | |
189 | is_legal = 1; | |
190 | } | |
191 | ||
192 | return is_legal; | |
193 | } | |
194 | ||
195 | inline int check_met_mmc_blk_data_legal(struct mmc_blk_data *md) | |
196 | { | |
197 | int is_legal = 0; | |
198 | ||
199 | if (!((md == NULL) || (md->disk == NULL))) { | |
200 | is_legal = 1; | |
201 | } | |
202 | ||
203 | return is_legal; | |
204 | } | |
205 | ||
206 | inline int check_met_mmc_req_legal(struct mmc_host *host, struct mmc_request *req) | |
207 | { | |
208 | int is_legal = 0; | |
209 | ||
210 | if (!((host == NULL) || (req == NULL) || (req->cmd == NULL) | |
211 | || (req->data == NULL) || (host->card == NULL))) { | |
212 | is_legal = 1; | |
213 | } | |
214 | ||
215 | return is_legal; | |
216 | } | |
217 | ||
218 | void met_mmc_insert(struct mmc_host *host, struct mmc_async_req *areq) | |
219 | { | |
220 | struct mmc_blk_data *md; | |
221 | char type; | |
222 | ||
223 | if (!check_met_mmc_async_req_legal(host, areq)) | |
224 | return; | |
225 | ||
226 | md = mmc_get_drvdata(host->card); | |
227 | if (!check_met_mmc_blk_data_legal(md)) | |
228 | return; | |
229 | ||
230 | type = mmc_get_rw_type(areq->mrq->cmd->opcode); | |
231 | if (type == 'X') | |
232 | return; | |
233 | ||
234 | #ifndef CONFIG_MTK_FPGA | |
235 | MET_FTRACE_PRINTK(met_mmc_insert, md, areq, type); | |
236 | #endif | |
237 | } | |
238 | ||
239 | void met_mmc_dma_map(struct mmc_host *host, struct mmc_async_req *areq) | |
240 | { | |
241 | struct mmc_blk_data *md; | |
242 | char type; | |
243 | ||
244 | if (!check_met_mmc_async_req_legal(host, areq)) | |
245 | return; | |
246 | ||
247 | md = mmc_get_drvdata(host->card); | |
248 | if (!check_met_mmc_blk_data_legal(md)) | |
249 | return; | |
250 | ||
251 | type = mmc_get_rw_type(areq->mrq->cmd->opcode); | |
252 | if (type == 'X') | |
253 | return; | |
254 | #ifndef CONFIG_MTK_FPGA | |
255 | MET_FTRACE_PRINTK(met_mmc_dma_map, md, areq, type); | |
256 | #endif | |
257 | } | |
258 | ||
259 | //void met_mmc_issue(struct mmc_host *host, struct mmc_async_req *areq) | |
260 | //{ | |
261 | // struct mmc_blk_data *md; | |
262 | // char type; | |
263 | // | |
264 | // if (!check_met_mmc_async_req_legal(host, areq)) | |
265 | // return; | |
266 | // | |
267 | // md = mmc_get_drvdata(host->card); | |
268 | // | |
269 | // type = mmc_get_rw_type(areq->mrq->cmd->opcode); | |
270 | // if (type == 'X') | |
271 | // return; | |
272 | // | |
273 | // MET_FTRACE_PRINTK(met_mmc_issue, md, areq, type); | |
274 | //} | |
275 | ||
276 | void met_mmc_issue(struct mmc_host *host, struct mmc_request *req) | |
277 | { | |
278 | struct mmc_blk_data *md; | |
279 | char type; | |
280 | ||
281 | if (!check_met_mmc_req_legal(host, req)) | |
282 | return; | |
283 | ||
284 | md = mmc_get_drvdata(host->card); | |
285 | if (!check_met_mmc_blk_data_legal(md)) | |
286 | return; | |
287 | ||
288 | type = mmc_get_rw_type(req->cmd->opcode); | |
289 | if (type == 'X') | |
290 | return; | |
291 | #ifndef CONFIG_MTK_FPGA | |
292 | MET_FTRACE_PRINTK(met_mmc_issue, md, req, type); | |
293 | #endif | |
294 | } | |
295 | ||
296 | void met_mmc_send_cmd(struct mmc_host *host, struct mmc_command *cmd) | |
297 | { | |
298 | struct mmc_blk_data *md = mmc_get_drvdata(host->card); | |
299 | char type; | |
300 | ||
301 | type = mmc_get_rw_type(cmd->opcode); | |
302 | if (type == 'X') | |
303 | return; | |
304 | ||
305 | trace_printk("%d,%d %c %d + %d [%s]\n", | |
306 | md->disk->major, md->disk->first_minor, type, | |
307 | cmd->arg, cmd->data->blocks, | |
308 | current->comm); | |
309 | } | |
310 | ||
311 | void met_mmc_xfr_done(struct mmc_host *host, struct mmc_command *cmd) | |
312 | { | |
313 | struct mmc_blk_data *md=mmc_get_drvdata(host->card); | |
314 | char type; | |
315 | ||
316 | type = mmc_get_rw_type(cmd->opcode); | |
317 | if (type == 'X') | |
318 | return; | |
319 | ||
320 | trace_printk("%d,%d %c %d + %d [%s]\n", | |
321 | md->disk->major, md->disk->first_minor, type, | |
322 | cmd->arg, cmd->data->blocks, | |
323 | current->comm); | |
324 | } | |
325 | ||
326 | void met_mmc_wait_xfr(struct mmc_host *host, struct mmc_async_req *areq) | |
327 | { | |
328 | struct mmc_blk_data *md = mmc_get_drvdata(host->card); | |
329 | char type; | |
330 | ||
331 | type = mmc_get_rw_type(areq->mrq->cmd->opcode); | |
332 | if (type == 'X') | |
333 | return; | |
334 | ||
335 | trace_printk("%d,%d %c %d + %d [%s]\n", | |
336 | md->disk->major, md->disk->first_minor, type, | |
337 | areq->mrq->cmd->arg, areq->mrq->data->blocks, | |
338 | current->comm); | |
339 | ||
340 | } | |
341 | ||
342 | void met_mmc_tuning_start(struct mmc_host *host, struct mmc_command *cmd) | |
343 | { | |
344 | struct mmc_blk_data *md = mmc_get_drvdata(host->card); | |
345 | char type; | |
346 | ||
347 | type = mmc_get_rw_type(cmd->opcode); | |
348 | if (type == 'X') | |
349 | return; | |
350 | ||
351 | trace_printk("%d,%d %c %d + %d [%s]\n", | |
352 | md->disk->major, md->disk->first_minor, type, | |
353 | cmd->arg, cmd->data->blocks, | |
354 | current->comm); | |
355 | } | |
356 | ||
357 | void met_mmc_tuning_end(struct mmc_host *host, struct mmc_command *cmd) | |
358 | { | |
359 | struct mmc_blk_data *md = mmc_get_drvdata(host->card); | |
360 | char type; | |
361 | ||
362 | type = mmc_get_rw_type(cmd->opcode); | |
363 | if (type == 'X') | |
364 | return; | |
365 | ||
366 | trace_printk("%d,%d %c %d + %d [%s]\n", | |
367 | md->disk->major, md->disk->first_minor, type, | |
368 | cmd->arg, cmd->data->blocks, | |
369 | current->comm); | |
370 | } | |
371 | ||
372 | void met_mmc_complete(struct mmc_host *host, struct mmc_async_req *areq) | |
373 | { | |
374 | struct mmc_blk_data *md; | |
375 | char type; | |
376 | ||
377 | if (!check_met_mmc_async_req_legal(host, areq)) | |
378 | return; | |
379 | ||
380 | md = mmc_get_drvdata(host->card); | |
381 | if (!check_met_mmc_blk_data_legal(md)) | |
382 | return; | |
383 | ||
384 | type = mmc_get_rw_type(areq->mrq->cmd->opcode); | |
385 | if (type == 'X') | |
386 | return; | |
387 | #ifndef CONFIG_MTK_FPGA | |
388 | MET_FTRACE_PRINTK(met_mmc_complete, md, areq, type); | |
389 | #endif | |
390 | } | |
391 | ||
392 | void met_mmc_dma_unmap_start(struct mmc_host *host, struct mmc_async_req *areq) | |
393 | { | |
394 | struct mmc_blk_data *md; | |
395 | char type; | |
396 | ||
397 | if (!check_met_mmc_async_req_legal(host, areq)) | |
398 | return; | |
399 | ||
400 | md = mmc_get_drvdata(host->card); | |
401 | if (!check_met_mmc_blk_data_legal(md)) | |
402 | return; | |
403 | ||
404 | type = mmc_get_rw_type(areq->mrq->cmd->opcode); | |
405 | if (type == 'X') | |
406 | return; | |
407 | #ifndef CONFIG_MTK_FPGA | |
408 | MET_FTRACE_PRINTK(met_mmc_dma_unmap_start, md, areq, type); | |
409 | #endif | |
410 | } | |
411 | ||
412 | void met_mmc_dma_unmap_stop(struct mmc_host *host, struct mmc_async_req *areq) | |
413 | { | |
414 | struct mmc_blk_data *md; | |
415 | char type; | |
416 | ||
417 | if (!check_met_mmc_async_req_legal(host, areq)) | |
418 | return; | |
419 | ||
420 | md = mmc_get_drvdata(host->card); | |
421 | if (!check_met_mmc_blk_data_legal(md)) | |
422 | return; | |
423 | ||
424 | type = mmc_get_rw_type(areq->mrq->cmd->opcode); | |
425 | if (type == 'X') | |
426 | return; | |
427 | #ifndef CONFIG_MTK_FPGA | |
428 | MET_FTRACE_PRINTK(met_mmc_dma_unmap_stop, md, areq, type); | |
429 | #endif | |
430 | } | |
431 | ||
432 | void met_mmc_continue_req_end(struct mmc_host *host, struct mmc_async_req *areq) | |
433 | { | |
434 | struct mmc_blk_data *md; | |
435 | char type; | |
436 | ||
437 | if (!check_met_mmc_async_req_legal(host, areq)) | |
438 | return; | |
439 | ||
440 | md = mmc_get_drvdata(host->card); | |
441 | if (!check_met_mmc_blk_data_legal(md)) | |
442 | return; | |
443 | ||
444 | type = mmc_get_rw_type(areq->mrq->cmd->opcode); | |
445 | if (type == 'X') | |
446 | return; | |
447 | #ifndef CONFIG_MTK_FPGA | |
448 | MET_FTRACE_PRINTK(met_mmc_continue_req_end, md, areq, type); | |
449 | #endif | |
450 | } | |
451 | ||
452 | void met_mmc_dma_stop(struct mmc_host *host, struct mmc_async_req *areq, unsigned int bd_num) | |
453 | { | |
454 | struct mmc_blk_data *md; | |
455 | char type; | |
456 | ||
457 | if (!check_met_mmc_async_req_legal(host, areq)) | |
458 | return; | |
459 | ||
460 | md = mmc_get_drvdata(host->card); | |
461 | if (!check_met_mmc_blk_data_legal(md)) | |
462 | return; | |
463 | ||
464 | type = mmc_get_rw_type(areq->mrq->cmd->opcode); | |
465 | if (type == 'X') | |
466 | return; | |
467 | #ifndef CONFIG_MTK_FPGA | |
468 | MET_FTRACE_PRINTK(met_mmc_dma_stop, md, areq, type, bd_num); | |
469 | #endif | |
470 | } | |
471 | ||
472 | //void met_mmc_end(struct mmc_host *host, struct mmc_async_req *areq) | |
473 | //{ | |
474 | // struct mmc_blk_data *md; | |
475 | // char type; | |
476 | // | |
477 | // if (areq && areq->mrq && host && host->card) { | |
478 | // type = mmc_get_rw_type(areq->mrq->cmd->opcode); | |
479 | // if (type == 'X') | |
480 | // return; | |
481 | // | |
482 | // md = mmc_get_drvdata(host->card); | |
483 | // | |
484 | // if (areq && areq->mrq) | |
485 | // { | |
486 | // trace_printk("%d,%d %c %d + %d [%s]\n", | |
487 | // md->disk->major, md->disk->first_minor, type, | |
488 | // areq->mrq->cmd->arg, areq->mrq->data->blocks, | |
489 | // current->comm); | |
490 | // } | |
491 | // } | |
492 | //} | |
493 | ||
ce39f9d1 SJ |
494 | static inline void mmc_blk_clear_packed(struct mmc_queue_req *mqrq) |
495 | { | |
496 | struct mmc_packed *packed = mqrq->packed; | |
497 | ||
498 | BUG_ON(!packed); | |
499 | ||
500 | mqrq->cmd_type = MMC_PACKED_NONE; | |
501 | packed->nr_entries = MMC_PACKED_NR_ZERO; | |
502 | packed->idx_failure = MMC_PACKED_NR_IDX; | |
503 | packed->retries = 0; | |
504 | packed->blocks = 0; | |
505 | } | |
506 | ||
1da177e4 LT |
507 | static struct mmc_blk_data *mmc_blk_get(struct gendisk *disk) |
508 | { | |
509 | struct mmc_blk_data *md; | |
510 | ||
a621aaed | 511 | mutex_lock(&open_lock); |
1da177e4 LT |
512 | md = disk->private_data; |
513 | if (md && md->usage == 0) | |
514 | md = NULL; | |
515 | if (md) | |
516 | md->usage++; | |
a621aaed | 517 | mutex_unlock(&open_lock); |
1da177e4 LT |
518 | |
519 | return md; | |
520 | } | |
521 | ||
371a689f AW |
522 | static inline int mmc_get_devidx(struct gendisk *disk) |
523 | { | |
6fa3eb70 | 524 | int devidx = disk->first_minor / perdev_minors; |
371a689f AW |
525 | return devidx; |
526 | } | |
527 | ||
1da177e4 LT |
528 | static void mmc_blk_put(struct mmc_blk_data *md) |
529 | { | |
a621aaed | 530 | mutex_lock(&open_lock); |
1da177e4 LT |
531 | md->usage--; |
532 | if (md->usage == 0) { | |
371a689f | 533 | int devidx = mmc_get_devidx(md->disk); |
5fa83ce2 AH |
534 | blk_cleanup_queue(md->queue.queue); |
535 | ||
1dff3144 DW |
536 | __clear_bit(devidx, dev_use); |
537 | ||
1da177e4 | 538 | put_disk(md->disk); |
1da177e4 LT |
539 | kfree(md); |
540 | } | |
a621aaed | 541 | mutex_unlock(&open_lock); |
1da177e4 LT |
542 | } |
543 | ||
add710ea JR |
544 | static ssize_t power_ro_lock_show(struct device *dev, |
545 | struct device_attribute *attr, char *buf) | |
546 | { | |
547 | int ret; | |
548 | struct mmc_blk_data *md = mmc_blk_get(dev_to_disk(dev)); | |
549 | struct mmc_card *card = md->queue.card; | |
550 | int locked = 0; | |
551 | ||
552 | if (card->ext_csd.boot_ro_lock & EXT_CSD_BOOT_WP_B_PERM_WP_EN) | |
553 | locked = 2; | |
554 | else if (card->ext_csd.boot_ro_lock & EXT_CSD_BOOT_WP_B_PWR_WP_EN) | |
555 | locked = 1; | |
556 | ||
557 | ret = snprintf(buf, PAGE_SIZE, "%d\n", locked); | |
558 | ||
559 | return ret; | |
560 | } | |
561 | ||
562 | static ssize_t power_ro_lock_store(struct device *dev, | |
563 | struct device_attribute *attr, const char *buf, size_t count) | |
564 | { | |
565 | int ret; | |
566 | struct mmc_blk_data *md, *part_md; | |
567 | struct mmc_card *card; | |
568 | unsigned long set; | |
569 | ||
570 | if (kstrtoul(buf, 0, &set)) | |
571 | return -EINVAL; | |
572 | ||
573 | if (set != 1) | |
574 | return count; | |
575 | ||
576 | md = mmc_blk_get(dev_to_disk(dev)); | |
577 | card = md->queue.card; | |
578 | ||
579 | mmc_claim_host(card->host); | |
580 | ||
581 | ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BOOT_WP, | |
582 | card->ext_csd.boot_ro_lock | | |
583 | EXT_CSD_BOOT_WP_B_PWR_WP_EN, | |
584 | card->ext_csd.part_time); | |
585 | if (ret) | |
586 | pr_err("%s: Locking boot partition ro until next power on failed: %d\n", md->disk->disk_name, ret); | |
587 | else | |
588 | card->ext_csd.boot_ro_lock |= EXT_CSD_BOOT_WP_B_PWR_WP_EN; | |
589 | ||
590 | mmc_release_host(card->host); | |
591 | ||
592 | if (!ret) { | |
593 | pr_info("%s: Locking boot partition ro until next power on\n", | |
594 | md->disk->disk_name); | |
595 | set_disk_ro(md->disk, 1); | |
596 | ||
597 | list_for_each_entry(part_md, &md->part, part) | |
598 | if (part_md->area_type == MMC_BLK_DATA_AREA_BOOT) { | |
599 | pr_info("%s: Locking boot partition ro until next power on\n", part_md->disk->disk_name); | |
600 | set_disk_ro(part_md->disk, 1); | |
601 | } | |
602 | } | |
603 | ||
604 | mmc_blk_put(md); | |
605 | return count; | |
606 | } | |
607 | ||
371a689f AW |
608 | static ssize_t force_ro_show(struct device *dev, struct device_attribute *attr, |
609 | char *buf) | |
610 | { | |
611 | int ret; | |
612 | struct mmc_blk_data *md = mmc_blk_get(dev_to_disk(dev)); | |
613 | ||
5d316a31 | 614 | ret = snprintf(buf, PAGE_SIZE, "%d\n", |
371a689f AW |
615 | get_disk_ro(dev_to_disk(dev)) ^ |
616 | md->read_only); | |
617 | mmc_blk_put(md); | |
618 | return ret; | |
619 | } | |
620 | ||
621 | static ssize_t force_ro_store(struct device *dev, struct device_attribute *attr, | |
622 | const char *buf, size_t count) | |
623 | { | |
624 | int ret; | |
625 | char *end; | |
626 | struct mmc_blk_data *md = mmc_blk_get(dev_to_disk(dev)); | |
627 | unsigned long set = simple_strtoul(buf, &end, 0); | |
628 | if (end == buf) { | |
629 | ret = -EINVAL; | |
630 | goto out; | |
631 | } | |
632 | ||
633 | set_disk_ro(dev_to_disk(dev), set || md->read_only); | |
634 | ret = count; | |
635 | out: | |
636 | mmc_blk_put(md); | |
637 | return ret; | |
638 | } | |
639 | ||
a5a1561f | 640 | static int mmc_blk_open(struct block_device *bdev, fmode_t mode) |
1da177e4 | 641 | { |
a5a1561f | 642 | struct mmc_blk_data *md = mmc_blk_get(bdev->bd_disk); |
1da177e4 LT |
643 | int ret = -ENXIO; |
644 | ||
2a48fc0a | 645 | mutex_lock(&block_mutex); |
1da177e4 LT |
646 | if (md) { |
647 | if (md->usage == 2) | |
a5a1561f | 648 | check_disk_change(bdev); |
1da177e4 | 649 | ret = 0; |
a00fc090 | 650 | |
a5a1561f | 651 | if ((mode & FMODE_WRITE) && md->read_only) { |
70bb0896 | 652 | mmc_blk_put(md); |
a00fc090 | 653 | ret = -EROFS; |
70bb0896 | 654 | } |
1da177e4 | 655 | } |
2a48fc0a | 656 | mutex_unlock(&block_mutex); |
1da177e4 LT |
657 | |
658 | return ret; | |
659 | } | |
660 | ||
db2a144b | 661 | static void mmc_blk_release(struct gendisk *disk, fmode_t mode) |
1da177e4 | 662 | { |
a5a1561f | 663 | struct mmc_blk_data *md = disk->private_data; |
1da177e4 | 664 | |
2a48fc0a | 665 | mutex_lock(&block_mutex); |
1da177e4 | 666 | mmc_blk_put(md); |
2a48fc0a | 667 | mutex_unlock(&block_mutex); |
1da177e4 LT |
668 | } |
669 | ||
670 | static int | |
a885c8c4 | 671 | mmc_blk_getgeo(struct block_device *bdev, struct hd_geometry *geo) |
1da177e4 | 672 | { |
a885c8c4 CH |
673 | geo->cylinders = get_capacity(bdev->bd_disk) / (4 * 16); |
674 | geo->heads = 4; | |
675 | geo->sectors = 16; | |
676 | return 0; | |
1da177e4 LT |
677 | } |
678 | ||
cb87ea28 JC |
679 | struct mmc_blk_ioc_data { |
680 | struct mmc_ioc_cmd ic; | |
681 | unsigned char *buf; | |
682 | u64 buf_bytes; | |
683 | }; | |
684 | ||
685 | static struct mmc_blk_ioc_data *mmc_blk_ioctl_copy_from_user( | |
686 | struct mmc_ioc_cmd __user *user) | |
687 | { | |
688 | struct mmc_blk_ioc_data *idata; | |
689 | int err; | |
690 | ||
691 | idata = kzalloc(sizeof(*idata), GFP_KERNEL); | |
692 | if (!idata) { | |
693 | err = -ENOMEM; | |
aea253ec | 694 | goto out; |
cb87ea28 JC |
695 | } |
696 | ||
697 | if (copy_from_user(&idata->ic, user, sizeof(idata->ic))) { | |
698 | err = -EFAULT; | |
aea253ec | 699 | goto idata_err; |
cb87ea28 JC |
700 | } |
701 | ||
702 | idata->buf_bytes = (u64) idata->ic.blksz * idata->ic.blocks; | |
703 | if (idata->buf_bytes > MMC_IOC_MAX_BYTES) { | |
704 | err = -EOVERFLOW; | |
aea253ec | 705 | goto idata_err; |
cb87ea28 JC |
706 | } |
707 | ||
4d6144de JR |
708 | if (!idata->buf_bytes) |
709 | return idata; | |
710 | ||
cb87ea28 JC |
711 | idata->buf = kzalloc(idata->buf_bytes, GFP_KERNEL); |
712 | if (!idata->buf) { | |
713 | err = -ENOMEM; | |
aea253ec | 714 | goto idata_err; |
cb87ea28 JC |
715 | } |
716 | ||
717 | if (copy_from_user(idata->buf, (void __user *)(unsigned long) | |
718 | idata->ic.data_ptr, idata->buf_bytes)) { | |
719 | err = -EFAULT; | |
720 | goto copy_err; | |
721 | } | |
722 | ||
723 | return idata; | |
724 | ||
725 | copy_err: | |
726 | kfree(idata->buf); | |
aea253ec | 727 | idata_err: |
cb87ea28 | 728 | kfree(idata); |
aea253ec | 729 | out: |
cb87ea28 | 730 | return ERR_PTR(err); |
cb87ea28 JC |
731 | } |
732 | ||
8d1e977d LP |
733 | static int ioctl_rpmb_card_status_poll(struct mmc_card *card, u32 *status, |
734 | u32 retries_max) | |
735 | { | |
736 | int err; | |
737 | u32 retry_count = 0; | |
738 | ||
739 | if (!status || !retries_max) | |
740 | return -EINVAL; | |
741 | ||
742 | do { | |
743 | err = get_card_status(card, status, 5); | |
744 | if (err) | |
745 | break; | |
746 | ||
747 | if (!R1_STATUS(*status) && | |
748 | (R1_CURRENT_STATE(*status) != R1_STATE_PRG)) | |
749 | break; /* RPMB programming operation complete */ | |
750 | ||
751 | /* | |
752 | * Rechedule to give the MMC device a chance to continue | |
753 | * processing the previous command without being polled too | |
754 | * frequently. | |
755 | */ | |
756 | usleep_range(1000, 5000); | |
757 | } while (++retry_count < retries_max); | |
758 | ||
759 | if (retry_count == retries_max) | |
760 | err = -EPERM; | |
761 | ||
762 | return err; | |
763 | } | |
764 | ||
cb87ea28 JC |
765 | static int mmc_blk_ioctl_cmd(struct block_device *bdev, |
766 | struct mmc_ioc_cmd __user *ic_ptr) | |
767 | { | |
768 | struct mmc_blk_ioc_data *idata; | |
769 | struct mmc_blk_data *md; | |
770 | struct mmc_card *card; | |
771 | struct mmc_command cmd = {0}; | |
772 | struct mmc_data data = {0}; | |
ad5fd972 | 773 | struct mmc_request mrq = {NULL}; |
cb87ea28 JC |
774 | struct scatterlist sg; |
775 | int err; | |
8d1e977d LP |
776 | int is_rpmb = false; |
777 | u32 status = 0; | |
cb87ea28 JC |
778 | |
779 | /* | |
780 | * The caller must have CAP_SYS_RAWIO, and must be calling this on the | |
781 | * whole block device, not on a partition. This prevents overspray | |
782 | * between sibling partitions. | |
783 | */ | |
784 | if ((!capable(CAP_SYS_RAWIO)) || (bdev != bdev->bd_contains)) | |
785 | return -EPERM; | |
786 | ||
787 | idata = mmc_blk_ioctl_copy_from_user(ic_ptr); | |
788 | if (IS_ERR(idata)) | |
789 | return PTR_ERR(idata); | |
790 | ||
cb87ea28 JC |
791 | md = mmc_blk_get(bdev->bd_disk); |
792 | if (!md) { | |
793 | err = -EINVAL; | |
1c02f000 | 794 | goto cmd_err; |
cb87ea28 JC |
795 | } |
796 | ||
8d1e977d LP |
797 | if (md->area_type & MMC_BLK_DATA_AREA_RPMB) |
798 | is_rpmb = true; | |
799 | ||
cb87ea28 JC |
800 | card = md->queue.card; |
801 | if (IS_ERR(card)) { | |
802 | err = PTR_ERR(card); | |
803 | goto cmd_done; | |
804 | } | |
805 | ||
4d6144de JR |
806 | cmd.opcode = idata->ic.opcode; |
807 | cmd.arg = idata->ic.arg; | |
808 | cmd.flags = idata->ic.flags; | |
809 | ||
810 | if (idata->buf_bytes) { | |
811 | data.sg = &sg; | |
812 | data.sg_len = 1; | |
813 | data.blksz = idata->ic.blksz; | |
814 | data.blocks = idata->ic.blocks; | |
815 | ||
816 | sg_init_one(data.sg, idata->buf, idata->buf_bytes); | |
817 | ||
818 | if (idata->ic.write_flag) | |
819 | data.flags = MMC_DATA_WRITE; | |
820 | else | |
821 | data.flags = MMC_DATA_READ; | |
822 | ||
823 | /* data.flags must already be set before doing this. */ | |
824 | mmc_set_data_timeout(&data, card); | |
825 | ||
826 | /* Allow overriding the timeout_ns for empirical tuning. */ | |
827 | if (idata->ic.data_timeout_ns) | |
828 | data.timeout_ns = idata->ic.data_timeout_ns; | |
829 | ||
830 | if ((cmd.flags & MMC_RSP_R1B) == MMC_RSP_R1B) { | |
831 | /* | |
832 | * Pretend this is a data transfer and rely on the | |
833 | * host driver to compute timeout. When all host | |
834 | * drivers support cmd.cmd_timeout for R1B, this | |
835 | * can be changed to: | |
836 | * | |
837 | * mrq.data = NULL; | |
838 | * cmd.cmd_timeout = idata->ic.cmd_timeout_ms; | |
839 | */ | |
840 | data.timeout_ns = idata->ic.cmd_timeout_ms * 1000000; | |
841 | } | |
842 | ||
843 | mrq.data = &data; | |
844 | } | |
845 | ||
846 | mrq.cmd = &cmd; | |
847 | ||
cb87ea28 JC |
848 | mmc_claim_host(card->host); |
849 | ||
8d1e977d LP |
850 | err = mmc_blk_part_switch(card, md); |
851 | if (err) | |
852 | goto cmd_rel_host; | |
853 | ||
cb87ea28 JC |
854 | if (idata->ic.is_acmd) { |
855 | err = mmc_app_cmd(card->host, card); | |
856 | if (err) | |
857 | goto cmd_rel_host; | |
858 | } | |
859 | ||
8d1e977d LP |
860 | if (is_rpmb) { |
861 | err = mmc_set_blockcount(card, data.blocks, | |
862 | idata->ic.write_flag & (1 << 31)); | |
863 | if (err) | |
864 | goto cmd_rel_host; | |
865 | } | |
866 | ||
cb87ea28 JC |
867 | mmc_wait_for_req(card->host, &mrq); |
868 | ||
869 | if (cmd.error) { | |
870 | dev_err(mmc_dev(card->host), "%s: cmd error %d\n", | |
871 | __func__, cmd.error); | |
872 | err = cmd.error; | |
873 | goto cmd_rel_host; | |
874 | } | |
875 | if (data.error) { | |
876 | dev_err(mmc_dev(card->host), "%s: data error %d\n", | |
877 | __func__, data.error); | |
878 | err = data.error; | |
879 | goto cmd_rel_host; | |
880 | } | |
881 | ||
882 | /* | |
883 | * According to the SD specs, some commands require a delay after | |
884 | * issuing the command. | |
885 | */ | |
886 | if (idata->ic.postsleep_min_us) | |
887 | usleep_range(idata->ic.postsleep_min_us, idata->ic.postsleep_max_us); | |
888 | ||
889 | if (copy_to_user(&(ic_ptr->response), cmd.resp, sizeof(cmd.resp))) { | |
890 | err = -EFAULT; | |
891 | goto cmd_rel_host; | |
892 | } | |
893 | ||
894 | if (!idata->ic.write_flag) { | |
895 | if (copy_to_user((void __user *)(unsigned long) idata->ic.data_ptr, | |
896 | idata->buf, idata->buf_bytes)) { | |
897 | err = -EFAULT; | |
898 | goto cmd_rel_host; | |
899 | } | |
900 | } | |
901 | ||
8d1e977d LP |
902 | if (is_rpmb) { |
903 | /* | |
904 | * Ensure RPMB command has completed by polling CMD13 | |
905 | * "Send Status". | |
906 | */ | |
907 | err = ioctl_rpmb_card_status_poll(card, &status, 5); | |
908 | if (err) | |
909 | dev_err(mmc_dev(card->host), | |
910 | "%s: Card Status=0x%08X, error %d\n", | |
911 | __func__, status, err); | |
912 | } | |
913 | ||
cb87ea28 JC |
914 | cmd_rel_host: |
915 | mmc_release_host(card->host); | |
916 | ||
917 | cmd_done: | |
918 | mmc_blk_put(md); | |
1c02f000 | 919 | cmd_err: |
cb87ea28 JC |
920 | kfree(idata->buf); |
921 | kfree(idata); | |
922 | return err; | |
923 | } | |
924 | ||
925 | static int mmc_blk_ioctl(struct block_device *bdev, fmode_t mode, | |
926 | unsigned int cmd, unsigned long arg) | |
927 | { | |
928 | int ret = -EINVAL; | |
929 | if (cmd == MMC_IOC_CMD) | |
930 | ret = mmc_blk_ioctl_cmd(bdev, (struct mmc_ioc_cmd __user *)arg); | |
931 | return ret; | |
932 | } | |
933 | ||
934 | #ifdef CONFIG_COMPAT | |
935 | static int mmc_blk_compat_ioctl(struct block_device *bdev, fmode_t mode, | |
936 | unsigned int cmd, unsigned long arg) | |
937 | { | |
938 | return mmc_blk_ioctl(bdev, mode, cmd, (unsigned long) compat_ptr(arg)); | |
939 | } | |
940 | #endif | |
941 | ||
83d5cde4 | 942 | static const struct block_device_operations mmc_bdops = { |
a5a1561f AV |
943 | .open = mmc_blk_open, |
944 | .release = mmc_blk_release, | |
a885c8c4 | 945 | .getgeo = mmc_blk_getgeo, |
1da177e4 | 946 | .owner = THIS_MODULE, |
cb87ea28 JC |
947 | .ioctl = mmc_blk_ioctl, |
948 | #ifdef CONFIG_COMPAT | |
949 | .compat_ioctl = mmc_blk_compat_ioctl, | |
950 | #endif | |
1da177e4 LT |
951 | }; |
952 | ||
371a689f AW |
953 | static inline int mmc_blk_part_switch(struct mmc_card *card, |
954 | struct mmc_blk_data *md) | |
955 | { | |
956 | int ret; | |
957 | struct mmc_blk_data *main_md = mmc_get_drvdata(card); | |
0d7d85ca | 958 | |
371a689f AW |
959 | if (main_md->part_curr == md->part_type) |
960 | return 0; | |
961 | ||
962 | if (mmc_card_mmc(card)) { | |
0d7d85ca AH |
963 | u8 part_config = card->ext_csd.part_config; |
964 | ||
965 | part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; | |
966 | part_config |= md->part_type; | |
371a689f AW |
967 | |
968 | ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
0d7d85ca | 969 | EXT_CSD_PART_CONFIG, part_config, |
371a689f AW |
970 | card->ext_csd.part_time); |
971 | if (ret) | |
972 | return ret; | |
0d7d85ca AH |
973 | |
974 | card->ext_csd.part_config = part_config; | |
67716327 | 975 | } |
371a689f AW |
976 | |
977 | main_md->part_curr = md->part_type; | |
978 | return 0; | |
979 | } | |
980 | ||
ec5a19dd PO |
981 | static u32 mmc_sd_num_wr_blocks(struct mmc_card *card) |
982 | { | |
983 | int err; | |
051913da BD |
984 | u32 result; |
985 | __be32 *blocks; | |
ec5a19dd | 986 | |
ad5fd972 | 987 | struct mmc_request mrq = {NULL}; |
1278dba1 | 988 | struct mmc_command cmd = {0}; |
a61ad2b4 | 989 | struct mmc_data data = {0}; |
ec5a19dd PO |
990 | |
991 | struct scatterlist sg; | |
992 | ||
ec5a19dd PO |
993 | cmd.opcode = MMC_APP_CMD; |
994 | cmd.arg = card->rca << 16; | |
7213d175 | 995 | cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC; |
ec5a19dd PO |
996 | |
997 | err = mmc_wait_for_cmd(card->host, &cmd, 0); | |
7213d175 DB |
998 | if (err) |
999 | return (u32)-1; | |
1000 | if (!mmc_host_is_spi(card->host) && !(cmd.resp[0] & R1_APP_CMD)) | |
ec5a19dd PO |
1001 | return (u32)-1; |
1002 | ||
1003 | memset(&cmd, 0, sizeof(struct mmc_command)); | |
1004 | ||
1005 | cmd.opcode = SD_APP_SEND_NUM_WR_BLKS; | |
1006 | cmd.arg = 0; | |
7213d175 | 1007 | cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; |
ec5a19dd | 1008 | |
ec5a19dd PO |
1009 | data.blksz = 4; |
1010 | data.blocks = 1; | |
1011 | data.flags = MMC_DATA_READ; | |
1012 | data.sg = &sg; | |
1013 | data.sg_len = 1; | |
d380443c | 1014 | mmc_set_data_timeout(&data, card); |
ec5a19dd | 1015 | |
ec5a19dd PO |
1016 | mrq.cmd = &cmd; |
1017 | mrq.data = &data; | |
1018 | ||
051913da BD |
1019 | blocks = kmalloc(4, GFP_KERNEL); |
1020 | if (!blocks) | |
1021 | return (u32)-1; | |
1022 | ||
1023 | sg_init_one(&sg, blocks, 4); | |
ec5a19dd PO |
1024 | |
1025 | mmc_wait_for_req(card->host, &mrq); | |
1026 | ||
051913da BD |
1027 | result = ntohl(*blocks); |
1028 | kfree(blocks); | |
1029 | ||
17b0429d | 1030 | if (cmd.error || data.error) |
051913da | 1031 | result = (u32)-1; |
ec5a19dd | 1032 | |
051913da | 1033 | return result; |
ec5a19dd PO |
1034 | } |
1035 | ||
6fa3eb70 S |
1036 | u32 __mmc_sd_num_wr_blocks(struct mmc_card *card) |
1037 | { | |
1038 | return mmc_sd_num_wr_blocks(card); | |
1039 | } | |
1040 | EXPORT_SYMBOL(__mmc_sd_num_wr_blocks); | |
1041 | ||
a01f3ccf RKAL |
1042 | static int send_stop(struct mmc_card *card, u32 *status) |
1043 | { | |
1044 | struct mmc_command cmd = {0}; | |
1045 | int err; | |
1046 | ||
1047 | cmd.opcode = MMC_STOP_TRANSMISSION; | |
1048 | cmd.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC; | |
1049 | err = mmc_wait_for_cmd(card->host, &cmd, 5); | |
1050 | if (err == 0) | |
1051 | *status = cmd.resp[0]; | |
1052 | return err; | |
1053 | } | |
1054 | ||
0a2d4048 | 1055 | static int get_card_status(struct mmc_card *card, u32 *status, int retries) |
504f191f | 1056 | { |
1278dba1 | 1057 | struct mmc_command cmd = {0}; |
504f191f AH |
1058 | int err; |
1059 | ||
504f191f AH |
1060 | cmd.opcode = MMC_SEND_STATUS; |
1061 | if (!mmc_host_is_spi(card->host)) | |
1062 | cmd.arg = card->rca << 16; | |
1063 | cmd.flags = MMC_RSP_SPI_R2 | MMC_RSP_R1 | MMC_CMD_AC; | |
0a2d4048 RKAL |
1064 | err = mmc_wait_for_cmd(card->host, &cmd, retries); |
1065 | if (err == 0) | |
1066 | *status = cmd.resp[0]; | |
1067 | return err; | |
504f191f AH |
1068 | } |
1069 | ||
a8ad82cc | 1070 | #define ERR_NOMEDIUM 3 |
a01f3ccf RKAL |
1071 | #define ERR_RETRY 2 |
1072 | #define ERR_ABORT 1 | |
1073 | #define ERR_CONTINUE 0 | |
1074 | ||
1075 | static int mmc_blk_cmd_error(struct request *req, const char *name, int error, | |
1076 | bool status_valid, u32 status) | |
1077 | { | |
1078 | switch (error) { | |
1079 | case -EILSEQ: | |
1080 | /* response crc error, retry the r/w cmd */ | |
1081 | pr_err("%s: %s sending %s command, card status %#x\n", | |
1082 | req->rq_disk->disk_name, "response CRC error", | |
1083 | name, status); | |
1084 | return ERR_RETRY; | |
1085 | ||
1086 | case -ETIMEDOUT: | |
1087 | pr_err("%s: %s sending %s command, card status %#x\n", | |
1088 | req->rq_disk->disk_name, "timed out", name, status); | |
1089 | ||
1090 | /* If the status cmd initially failed, retry the r/w cmd */ | |
6fa3eb70 S |
1091 | if (!status_valid) { |
1092 | pr_err("%s: status not valid, retrying timeout\n", req->rq_disk->disk_name); | |
a01f3ccf | 1093 | return ERR_RETRY; |
6fa3eb70 | 1094 | } |
a01f3ccf RKAL |
1095 | /* |
1096 | * If it was a r/w cmd crc error, or illegal command | |
1097 | * (eg, issued in wrong state) then retry - we should | |
1098 | * have corrected the state problem above. | |
1099 | */ | |
6fa3eb70 S |
1100 | if (status & (R1_COM_CRC_ERROR | R1_ILLEGAL_COMMAND)) { |
1101 | pr_err("%s: command error, retrying timeout\n", req->rq_disk->disk_name); | |
a01f3ccf | 1102 | return ERR_RETRY; |
6fa3eb70 | 1103 | } |
a01f3ccf RKAL |
1104 | |
1105 | /* Otherwise abort the command */ | |
6fa3eb70 | 1106 | pr_err("%s: not retrying timeout\n", req->rq_disk->disk_name); |
a01f3ccf RKAL |
1107 | return ERR_ABORT; |
1108 | ||
1109 | default: | |
1110 | /* We don't understand the error code the driver gave us */ | |
1111 | pr_err("%s: unknown error %d sending read/write command, card status %#x\n", | |
1112 | req->rq_disk->disk_name, error, status); | |
1113 | return ERR_ABORT; | |
1114 | } | |
1115 | } | |
1116 | ||
1117 | /* | |
1118 | * Initial r/w and stop cmd error recovery. | |
1119 | * We don't know whether the card received the r/w cmd or not, so try to | |
1120 | * restore things back to a sane state. Essentially, we do this as follows: | |
1121 | * - Obtain card status. If the first attempt to obtain card status fails, | |
1122 | * the status word will reflect the failed status cmd, not the failed | |
1123 | * r/w cmd. If we fail to obtain card status, it suggests we can no | |
1124 | * longer communicate with the card. | |
1125 | * - Check the card state. If the card received the cmd but there was a | |
1126 | * transient problem with the response, it might still be in a data transfer | |
1127 | * mode. Try to send it a stop command. If this fails, we can't recover. | |
1128 | * - If the r/w cmd failed due to a response CRC error, it was probably | |
1129 | * transient, so retry the cmd. | |
1130 | * - If the r/w cmd timed out, but we didn't get the r/w cmd status, retry. | |
1131 | * - If the r/w cmd timed out, and the r/w cmd failed due to CRC error or | |
1132 | * illegal cmd, retry. | |
1133 | * Otherwise we don't understand what happened, so abort. | |
1134 | */ | |
1135 | static int mmc_blk_cmd_recovery(struct mmc_card *card, struct request *req, | |
604ae797 | 1136 | struct mmc_blk_request *brq, int *ecc_err, int *gen_err) |
a01f3ccf RKAL |
1137 | { |
1138 | bool prev_cmd_status_valid = true; | |
1139 | u32 status, stop_status = 0; | |
1140 | int err, retry; | |
1141 | ||
a8ad82cc SRT |
1142 | if (mmc_card_removed(card)) |
1143 | return ERR_NOMEDIUM; | |
1144 | ||
a01f3ccf RKAL |
1145 | /* |
1146 | * Try to get card status which indicates both the card state | |
1147 | * and why there was no response. If the first attempt fails, | |
1148 | * we can't be sure the returned status is for the r/w command. | |
1149 | */ | |
1150 | for (retry = 2; retry >= 0; retry--) { | |
1151 | err = get_card_status(card, &status, 0); | |
1152 | if (!err) | |
1153 | break; | |
1154 | ||
1155 | prev_cmd_status_valid = false; | |
1156 | pr_err("%s: error %d sending status command, %sing\n", | |
1157 | req->rq_disk->disk_name, err, retry ? "retry" : "abort"); | |
1158 | } | |
1159 | ||
1160 | /* We couldn't get a response from the card. Give up. */ | |
a8ad82cc SRT |
1161 | if (err) { |
1162 | /* Check if the card is removed */ | |
1163 | if (mmc_detect_card_removed(card->host)) | |
1164 | return ERR_NOMEDIUM; | |
a01f3ccf | 1165 | return ERR_ABORT; |
a8ad82cc | 1166 | } |
a01f3ccf | 1167 | |
67716327 AH |
1168 | /* Flag ECC errors */ |
1169 | if ((status & R1_CARD_ECC_FAILED) || | |
1170 | (brq->stop.resp[0] & R1_CARD_ECC_FAILED) || | |
1171 | (brq->cmd.resp[0] & R1_CARD_ECC_FAILED)) | |
1172 | *ecc_err = 1; | |
1173 | ||
604ae797 KY |
1174 | /* Flag General errors */ |
1175 | if (!mmc_host_is_spi(card->host) && rq_data_dir(req) != READ) | |
1176 | if ((status & R1_ERROR) || | |
1177 | (brq->stop.resp[0] & R1_ERROR)) { | |
1178 | pr_err("%s: %s: general error sending stop or status command, stop cmd response %#x, card status %#x\n", | |
1179 | req->rq_disk->disk_name, __func__, | |
1180 | brq->stop.resp[0], status); | |
1181 | *gen_err = 1; | |
1182 | } | |
1183 | ||
a01f3ccf RKAL |
1184 | /* |
1185 | * Check the current card state. If it is in some data transfer | |
1186 | * mode, tell it to stop (and hopefully transition back to TRAN.) | |
1187 | */ | |
1188 | if (R1_CURRENT_STATE(status) == R1_STATE_DATA || | |
1189 | R1_CURRENT_STATE(status) == R1_STATE_RCV) { | |
1190 | err = send_stop(card, &stop_status); | |
6fa3eb70 S |
1191 | if (err) |
1192 | { | |
1193 | get_card_status(card,&status,0); | |
1194 | if ((R1_CURRENT_STATE(status) == R1_STATE_TRAN) ||(R1_CURRENT_STATE(status) == R1_STATE_PRG)){ | |
1195 | err=0; | |
1196 | stop_status=0; | |
1197 | pr_err("b card status %d \n",status); | |
1198 | } | |
1199 | else | |
1200 | pr_err("g card status %d \n",status); | |
1201 | } | |
a01f3ccf RKAL |
1202 | if (err) |
1203 | pr_err("%s: error %d sending stop command\n", | |
1204 | req->rq_disk->disk_name, err); | |
1205 | ||
1206 | /* | |
1207 | * If the stop cmd also timed out, the card is probably | |
1208 | * not present, so abort. Other errors are bad news too. | |
1209 | */ | |
1210 | if (err) | |
1211 | return ERR_ABORT; | |
67716327 AH |
1212 | if (stop_status & R1_CARD_ECC_FAILED) |
1213 | *ecc_err = 1; | |
604ae797 KY |
1214 | if (!mmc_host_is_spi(card->host) && rq_data_dir(req) != READ) |
1215 | if (stop_status & R1_ERROR) { | |
1216 | pr_err("%s: %s: general error sending stop command, stop cmd response %#x\n", | |
1217 | req->rq_disk->disk_name, __func__, | |
1218 | stop_status); | |
1219 | *gen_err = 1; | |
1220 | } | |
a01f3ccf RKAL |
1221 | } |
1222 | ||
1223 | /* Check for set block count errors */ | |
1224 | if (brq->sbc.error) | |
1225 | return mmc_blk_cmd_error(req, "SET_BLOCK_COUNT", brq->sbc.error, | |
1226 | prev_cmd_status_valid, status); | |
1227 | ||
1228 | /* Check for r/w command errors */ | |
1229 | if (brq->cmd.error) | |
1230 | return mmc_blk_cmd_error(req, "r/w cmd", brq->cmd.error, | |
1231 | prev_cmd_status_valid, status); | |
1232 | ||
67716327 AH |
1233 | /* Data errors */ |
1234 | if (!brq->stop.error) | |
1235 | return ERR_CONTINUE; | |
1236 | ||
a01f3ccf RKAL |
1237 | /* Now for stop errors. These aren't fatal to the transfer. */ |
1238 | pr_err("%s: error %d sending stop command, original cmd response %#x, card status %#x\n", | |
1239 | req->rq_disk->disk_name, brq->stop.error, | |
1240 | brq->cmd.resp[0], status); | |
1241 | ||
1242 | /* | |
1243 | * Subsitute in our own stop status as this will give the error | |
1244 | * state which happened during the execution of the r/w command. | |
1245 | */ | |
1246 | if (stop_status) { | |
1247 | brq->stop.resp[0] = stop_status; | |
1248 | brq->stop.error = 0; | |
1249 | } | |
1250 | return ERR_CONTINUE; | |
1251 | } | |
1252 | ||
67716327 AH |
1253 | static int mmc_blk_reset(struct mmc_blk_data *md, struct mmc_host *host, |
1254 | int type) | |
1255 | { | |
1256 | int err; | |
1257 | ||
1258 | if (md->reset_done & type) | |
1259 | return -EEXIST; | |
1260 | ||
1261 | md->reset_done |= type; | |
1262 | err = mmc_hw_reset(host); | |
1263 | /* Ensure we switch back to the correct partition */ | |
1264 | if (err != -EOPNOTSUPP) { | |
1265 | struct mmc_blk_data *main_md = mmc_get_drvdata(host->card); | |
1266 | int part_err; | |
1267 | ||
1268 | main_md->part_curr = main_md->part_type; | |
1269 | part_err = mmc_blk_part_switch(host->card, md); | |
1270 | if (part_err) { | |
1271 | /* | |
1272 | * We have failed to get back into the correct | |
1273 | * partition, so we need to abort the whole request. | |
1274 | */ | |
1275 | return -ENODEV; | |
1276 | } | |
1277 | } | |
1278 | return err; | |
1279 | } | |
1280 | ||
1281 | static inline void mmc_blk_reset_success(struct mmc_blk_data *md, int type) | |
1282 | { | |
1283 | md->reset_done &= ~type; | |
1284 | } | |
1285 | ||
6186ada9 CD |
1286 | int mmc_access_rpmb(struct mmc_queue *mq) |
1287 | { | |
1288 | struct mmc_blk_data *md = mq->data; | |
1289 | /* | |
1290 | * If this is a RPMB partition access, return ture | |
1291 | */ | |
1292 | if (md && md->part_type == EXT_CSD_PART_CONFIG_ACC_RPMB) | |
1293 | return true; | |
1294 | ||
1295 | return false; | |
1296 | } | |
1297 | ||
bd788c96 AH |
1298 | static int mmc_blk_issue_discard_rq(struct mmc_queue *mq, struct request *req) |
1299 | { | |
1300 | struct mmc_blk_data *md = mq->data; | |
1301 | struct mmc_card *card = md->queue.card; | |
1302 | unsigned int from, nr, arg; | |
67716327 | 1303 | int err = 0, type = MMC_BLK_DISCARD; |
bd788c96 | 1304 | |
bd788c96 AH |
1305 | if (!mmc_can_erase(card)) { |
1306 | err = -EOPNOTSUPP; | |
1307 | goto out; | |
1308 | } | |
1309 | ||
1310 | from = blk_rq_pos(req); | |
1311 | nr = blk_rq_sectors(req); | |
1312 | ||
b3bf9153 KP |
1313 | if (mmc_can_discard(card)) |
1314 | arg = MMC_DISCARD_ARG; | |
1315 | else if (mmc_can_trim(card)) | |
bd788c96 AH |
1316 | arg = MMC_TRIM_ARG; |
1317 | else | |
1318 | arg = MMC_ERASE_ARG; | |
67716327 | 1319 | retry: |
6a7a6b45 AW |
1320 | if (card->quirks & MMC_QUIRK_INAND_CMD38) { |
1321 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1322 | INAND_CMD38_ARG_EXT_CSD, | |
1323 | arg == MMC_TRIM_ARG ? | |
1324 | INAND_CMD38_ARG_TRIM : | |
1325 | INAND_CMD38_ARG_ERASE, | |
1326 | 0); | |
1327 | if (err) | |
1328 | goto out; | |
1329 | } | |
bd788c96 AH |
1330 | err = mmc_erase(card, from, nr, arg); |
1331 | out: | |
67716327 AH |
1332 | if (err == -EIO && !mmc_blk_reset(md, card->host, type)) |
1333 | goto retry; | |
1334 | if (!err) | |
1335 | mmc_blk_reset_success(md, type); | |
ecf8b5d0 | 1336 | blk_end_request(req, err, blk_rq_bytes(req)); |
bd788c96 | 1337 | |
bd788c96 AH |
1338 | return err ? 0 : 1; |
1339 | } | |
1340 | ||
49804548 AH |
1341 | static int mmc_blk_issue_secdiscard_rq(struct mmc_queue *mq, |
1342 | struct request *req) | |
1343 | { | |
1344 | struct mmc_blk_data *md = mq->data; | |
1345 | struct mmc_card *card = md->queue.card; | |
28302812 | 1346 | unsigned int from, nr, arg, trim_arg, erase_arg; |
67716327 | 1347 | int err = 0, type = MMC_BLK_SECDISCARD; |
49804548 | 1348 | |
d9ddd629 | 1349 | if (!(mmc_can_secure_erase_trim(card) || mmc_can_sanitize(card))) { |
49804548 AH |
1350 | err = -EOPNOTSUPP; |
1351 | goto out; | |
1352 | } | |
1353 | ||
28302812 AH |
1354 | from = blk_rq_pos(req); |
1355 | nr = blk_rq_sectors(req); | |
1356 | ||
d9ddd629 KP |
1357 | /* The sanitize operation is supported at v4.5 only */ |
1358 | if (mmc_can_sanitize(card)) { | |
28302812 AH |
1359 | erase_arg = MMC_ERASE_ARG; |
1360 | trim_arg = MMC_TRIM_ARG; | |
1361 | } else { | |
1362 | erase_arg = MMC_SECURE_ERASE_ARG; | |
1363 | trim_arg = MMC_SECURE_TRIM1_ARG; | |
d9ddd629 KP |
1364 | } |
1365 | ||
28302812 AH |
1366 | if (mmc_erase_group_aligned(card, from, nr)) |
1367 | arg = erase_arg; | |
1368 | else if (mmc_can_trim(card)) | |
1369 | arg = trim_arg; | |
1370 | else { | |
1371 | err = -EINVAL; | |
1372 | goto out; | |
1373 | } | |
67716327 | 1374 | retry: |
6a7a6b45 AW |
1375 | if (card->quirks & MMC_QUIRK_INAND_CMD38) { |
1376 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1377 | INAND_CMD38_ARG_EXT_CSD, | |
1378 | arg == MMC_SECURE_TRIM1_ARG ? | |
1379 | INAND_CMD38_ARG_SECTRIM1 : | |
1380 | INAND_CMD38_ARG_SECERASE, | |
1381 | 0); | |
1382 | if (err) | |
28302812 | 1383 | goto out_retry; |
6a7a6b45 | 1384 | } |
28302812 | 1385 | |
49804548 | 1386 | err = mmc_erase(card, from, nr, arg); |
28302812 AH |
1387 | if (err == -EIO) |
1388 | goto out_retry; | |
1389 | if (err) | |
1390 | goto out; | |
1391 | ||
1392 | if (arg == MMC_SECURE_TRIM1_ARG) { | |
6a7a6b45 AW |
1393 | if (card->quirks & MMC_QUIRK_INAND_CMD38) { |
1394 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, | |
1395 | INAND_CMD38_ARG_EXT_CSD, | |
1396 | INAND_CMD38_ARG_SECTRIM2, | |
1397 | 0); | |
1398 | if (err) | |
28302812 | 1399 | goto out_retry; |
6a7a6b45 | 1400 | } |
28302812 | 1401 | |
49804548 | 1402 | err = mmc_erase(card, from, nr, MMC_SECURE_TRIM2_ARG); |
28302812 AH |
1403 | if (err == -EIO) |
1404 | goto out_retry; | |
1405 | if (err) | |
1406 | goto out; | |
6a7a6b45 | 1407 | } |
28302812 | 1408 | |
6fa3eb70 S |
1409 | if (mmc_can_sanitize(card)) { |
1410 | trace_mmc_blk_erase_start(EXT_CSD_SANITIZE_START, 0, 0); | |
28302812 AH |
1411 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
1412 | EXT_CSD_SANITIZE_START, 1, 0); | |
6fa3eb70 S |
1413 | trace_mmc_blk_erase_end(EXT_CSD_SANITIZE_START, 0, 0); |
1414 | } | |
28302812 AH |
1415 | out_retry: |
1416 | if (err && !mmc_blk_reset(md, card->host, type)) | |
67716327 AH |
1417 | goto retry; |
1418 | if (!err) | |
1419 | mmc_blk_reset_success(md, type); | |
28302812 | 1420 | out: |
ecf8b5d0 | 1421 | blk_end_request(req, err, blk_rq_bytes(req)); |
49804548 | 1422 | |
49804548 AH |
1423 | return err ? 0 : 1; |
1424 | } | |
1425 | ||
f4c5522b AW |
1426 | static int mmc_blk_issue_flush(struct mmc_queue *mq, struct request *req) |
1427 | { | |
1428 | struct mmc_blk_data *md = mq->data; | |
881d1c25 SJ |
1429 | struct mmc_card *card = md->queue.card; |
1430 | int ret = 0; | |
1431 | ||
1432 | ret = mmc_flush_cache(card); | |
1433 | if (ret) | |
1434 | ret = -EIO; | |
f4c5522b | 1435 | |
ecf8b5d0 | 1436 | blk_end_request_all(req, ret); |
f4c5522b | 1437 | |
881d1c25 | 1438 | return ret ? 0 : 1; |
f4c5522b AW |
1439 | } |
1440 | ||
1441 | /* | |
1442 | * Reformat current write as a reliable write, supporting | |
1443 | * both legacy and the enhanced reliable write MMC cards. | |
1444 | * In each transfer we'll handle only as much as a single | |
1445 | * reliable write can handle, thus finish the request in | |
1446 | * partial completions. | |
1447 | */ | |
d0c97cfb AW |
1448 | static inline void mmc_apply_rel_rw(struct mmc_blk_request *brq, |
1449 | struct mmc_card *card, | |
1450 | struct request *req) | |
f4c5522b | 1451 | { |
f4c5522b AW |
1452 | if (!(card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN)) { |
1453 | /* Legacy mode imposes restrictions on transfers. */ | |
1454 | if (!IS_ALIGNED(brq->cmd.arg, card->ext_csd.rel_sectors)) | |
1455 | brq->data.blocks = 1; | |
1456 | ||
1457 | if (brq->data.blocks > card->ext_csd.rel_sectors) | |
1458 | brq->data.blocks = card->ext_csd.rel_sectors; | |
1459 | else if (brq->data.blocks < card->ext_csd.rel_sectors) | |
1460 | brq->data.blocks = 1; | |
1461 | } | |
f4c5522b AW |
1462 | } |
1463 | ||
4c2b8f26 RKAL |
1464 | #define CMD_ERRORS \ |
1465 | (R1_OUT_OF_RANGE | /* Command argument out of range */ \ | |
1466 | R1_ADDRESS_ERROR | /* Misaligned address */ \ | |
1467 | R1_BLOCK_LEN_ERROR | /* Transferred block length incorrect */\ | |
1468 | R1_WP_VIOLATION | /* Tried to write to protected block */ \ | |
1469 | R1_CC_ERROR | /* Card controller error */ \ | |
1470 | R1_ERROR) /* General/unknown error */ | |
1471 | ||
ee8a43a5 PF |
1472 | static int mmc_blk_err_check(struct mmc_card *card, |
1473 | struct mmc_async_req *areq) | |
d78d4a8a | 1474 | { |
ee8a43a5 PF |
1475 | struct mmc_queue_req *mq_mrq = container_of(areq, struct mmc_queue_req, |
1476 | mmc_active); | |
1477 | struct mmc_blk_request *brq = &mq_mrq->brq; | |
1478 | struct request *req = mq_mrq->req; | |
604ae797 | 1479 | int ecc_err = 0, gen_err = 0; |
d78d4a8a PF |
1480 | |
1481 | /* | |
1482 | * sbc.error indicates a problem with the set block count | |
1483 | * command. No data will have been transferred. | |
1484 | * | |
1485 | * cmd.error indicates a problem with the r/w command. No | |
1486 | * data will have been transferred. | |
1487 | * | |
1488 | * stop.error indicates a problem with the stop command. Data | |
1489 | * may have been transferred, or may still be transferring. | |
1490 | */ | |
67716327 AH |
1491 | if (brq->sbc.error || brq->cmd.error || brq->stop.error || |
1492 | brq->data.error) { | |
604ae797 | 1493 | switch (mmc_blk_cmd_recovery(card, req, brq, &ecc_err, &gen_err)) { |
d78d4a8a PF |
1494 | case ERR_RETRY: |
1495 | return MMC_BLK_RETRY; | |
1496 | case ERR_ABORT: | |
1497 | return MMC_BLK_ABORT; | |
a8ad82cc SRT |
1498 | case ERR_NOMEDIUM: |
1499 | return MMC_BLK_NOMEDIUM; | |
d78d4a8a PF |
1500 | case ERR_CONTINUE: |
1501 | break; | |
1502 | } | |
1503 | } | |
1504 | ||
1505 | /* | |
1506 | * Check for errors relating to the execution of the | |
1507 | * initial command - such as address errors. No data | |
1508 | * has been transferred. | |
1509 | */ | |
1510 | if (brq->cmd.resp[0] & CMD_ERRORS) { | |
1511 | pr_err("%s: r/w command failed, status = %#x\n", | |
1512 | req->rq_disk->disk_name, brq->cmd.resp[0]); | |
1513 | return MMC_BLK_ABORT; | |
1514 | } | |
1515 | ||
1516 | /* | |
1517 | * Everything else is either success, or a data error of some | |
1518 | * kind. If it was a write, we may have transitioned to | |
1519 | * program mode, which we have to wait for it to complete. | |
1520 | */ | |
1521 | if (!mmc_host_is_spi(card->host) && rq_data_dir(req) != READ) { | |
1522 | u32 status; | |
8fee476b TR |
1523 | unsigned long timeout; |
1524 | ||
604ae797 KY |
1525 | /* Check stop command response */ |
1526 | if (brq->stop.resp[0] & R1_ERROR) { | |
1527 | pr_err("%s: %s: general error sending stop command, stop cmd response %#x\n", | |
1528 | req->rq_disk->disk_name, __func__, | |
1529 | brq->stop.resp[0]); | |
1530 | gen_err = 1; | |
1531 | } | |
1532 | ||
8fee476b | 1533 | timeout = jiffies + msecs_to_jiffies(MMC_BLK_TIMEOUT_MS); |
d78d4a8a PF |
1534 | do { |
1535 | int err = get_card_status(card, &status, 5); | |
1536 | if (err) { | |
a3c76eb9 | 1537 | pr_err("%s: error %d requesting status\n", |
d78d4a8a PF |
1538 | req->rq_disk->disk_name, err); |
1539 | return MMC_BLK_CMD_ERR; | |
1540 | } | |
8fee476b | 1541 | |
604ae797 KY |
1542 | if (status & R1_ERROR) { |
1543 | pr_err("%s: %s: general error sending status command, card status %#x\n", | |
1544 | req->rq_disk->disk_name, __func__, | |
1545 | status); | |
1546 | gen_err = 1; | |
1547 | } | |
1548 | ||
8fee476b TR |
1549 | /* Timeout if the device never becomes ready for data |
1550 | * and never leaves the program state. | |
1551 | */ | |
1552 | if (time_after(jiffies, timeout)) { | |
1553 | pr_err("%s: Card stuck in programming state!"\ | |
1554 | " %s %s\n", mmc_hostname(card->host), | |
1555 | req->rq_disk->disk_name, __func__); | |
1556 | ||
1557 | return MMC_BLK_CMD_ERR; | |
1558 | } | |
d78d4a8a PF |
1559 | /* |
1560 | * Some cards mishandle the status bits, | |
1561 | * so make sure to check both the busy | |
1562 | * indication and the card state. | |
1563 | */ | |
1564 | } while (!(status & R1_READY_FOR_DATA) || | |
1565 | (R1_CURRENT_STATE(status) == R1_STATE_PRG)); | |
1566 | } | |
1567 | ||
604ae797 KY |
1568 | /* if general error occurs, retry the write operation. */ |
1569 | if (gen_err) { | |
1570 | pr_warn("%s: retrying write for general error\n", | |
1571 | req->rq_disk->disk_name); | |
1572 | return MMC_BLK_RETRY; | |
1573 | } | |
1574 | ||
d78d4a8a PF |
1575 | if (brq->data.error) { |
1576 | pr_err("%s: error %d transferring data, sector %u, nr %u, cmd response %#x, card status %#x\n", | |
1577 | req->rq_disk->disk_name, brq->data.error, | |
1578 | (unsigned)blk_rq_pos(req), | |
1579 | (unsigned)blk_rq_sectors(req), | |
1580 | brq->cmd.resp[0], brq->stop.resp[0]); | |
1581 | ||
1582 | if (rq_data_dir(req) == READ) { | |
67716327 AH |
1583 | if (ecc_err) |
1584 | return MMC_BLK_ECC_ERR; | |
d78d4a8a PF |
1585 | return MMC_BLK_DATA_ERR; |
1586 | } else { | |
1587 | return MMC_BLK_CMD_ERR; | |
1588 | } | |
1589 | } | |
1590 | ||
67716327 AH |
1591 | if (!brq->data.bytes_xfered) |
1592 | return MMC_BLK_RETRY; | |
d78d4a8a | 1593 | |
ce39f9d1 SJ |
1594 | if (mmc_packed_cmd(mq_mrq->cmd_type)) { |
1595 | if (unlikely(brq->data.blocks << 9 != brq->data.bytes_xfered)) | |
1596 | return MMC_BLK_PARTIAL; | |
1597 | else | |
1598 | return MMC_BLK_SUCCESS; | |
1599 | } | |
1600 | ||
67716327 AH |
1601 | if (blk_rq_bytes(req) != brq->data.bytes_xfered) |
1602 | return MMC_BLK_PARTIAL; | |
1603 | ||
1604 | return MMC_BLK_SUCCESS; | |
d78d4a8a PF |
1605 | } |
1606 | ||
ce39f9d1 SJ |
1607 | static int mmc_blk_packed_err_check(struct mmc_card *card, |
1608 | struct mmc_async_req *areq) | |
1609 | { | |
1610 | struct mmc_queue_req *mq_rq = container_of(areq, struct mmc_queue_req, | |
1611 | mmc_active); | |
1612 | struct request *req = mq_rq->req; | |
1613 | struct mmc_packed *packed = mq_rq->packed; | |
1614 | int err, check, status; | |
1615 | u8 *ext_csd; | |
1616 | ||
1617 | BUG_ON(!packed); | |
1618 | ||
1619 | packed->retries--; | |
1620 | check = mmc_blk_err_check(card, areq); | |
1621 | err = get_card_status(card, &status, 0); | |
1622 | if (err) { | |
1623 | pr_err("%s: error %d sending status command\n", | |
1624 | req->rq_disk->disk_name, err); | |
1625 | return MMC_BLK_ABORT; | |
1626 | } | |
1627 | ||
1628 | if (status & R1_EXCEPTION_EVENT) { | |
1629 | ext_csd = kzalloc(512, GFP_KERNEL); | |
1630 | if (!ext_csd) { | |
1631 | pr_err("%s: unable to allocate buffer for ext_csd\n", | |
1632 | req->rq_disk->disk_name); | |
1633 | return -ENOMEM; | |
1634 | } | |
1635 | ||
1636 | err = mmc_send_ext_csd(card, ext_csd); | |
1637 | if (err) { | |
1638 | pr_err("%s: error %d sending ext_csd\n", | |
1639 | req->rq_disk->disk_name, err); | |
1640 | check = MMC_BLK_ABORT; | |
1641 | goto free; | |
1642 | } | |
1643 | ||
1644 | if ((ext_csd[EXT_CSD_EXP_EVENTS_STATUS] & | |
1645 | EXT_CSD_PACKED_FAILURE) && | |
1646 | (ext_csd[EXT_CSD_PACKED_CMD_STATUS] & | |
1647 | EXT_CSD_PACKED_GENERIC_ERROR)) { | |
1648 | if (ext_csd[EXT_CSD_PACKED_CMD_STATUS] & | |
1649 | EXT_CSD_PACKED_INDEXED_ERROR) { | |
1650 | packed->idx_failure = | |
1651 | ext_csd[EXT_CSD_PACKED_FAILURE_INDEX] - 1; | |
1652 | check = MMC_BLK_PARTIAL; | |
1653 | } | |
1654 | pr_err("%s: packed cmd failed, nr %u, sectors %u, " | |
1655 | "failure index: %d\n", | |
1656 | req->rq_disk->disk_name, packed->nr_entries, | |
1657 | packed->blocks, packed->idx_failure); | |
1658 | } | |
1659 | free: | |
1660 | kfree(ext_csd); | |
1661 | } | |
1662 | ||
1663 | return check; | |
1664 | } | |
1665 | ||
54d49d77 PF |
1666 | static void mmc_blk_rw_rq_prep(struct mmc_queue_req *mqrq, |
1667 | struct mmc_card *card, | |
1668 | int disable_multi, | |
1669 | struct mmc_queue *mq) | |
1da177e4 | 1670 | { |
54d49d77 PF |
1671 | u32 readcmd, writecmd; |
1672 | struct mmc_blk_request *brq = &mqrq->brq; | |
1673 | struct request *req = mqrq->req; | |
1da177e4 | 1674 | struct mmc_blk_data *md = mq->data; |
4265900e | 1675 | bool do_data_tag; |
1da177e4 | 1676 | |
f4c5522b AW |
1677 | /* |
1678 | * Reliable writes are used to implement Forced Unit Access and | |
1679 | * REQ_META accesses, and are supported only on MMCs. | |
65299a3b CH |
1680 | * |
1681 | * XXX: this really needs a good explanation of why REQ_META | |
1682 | * is treated special. | |
f4c5522b AW |
1683 | */ |
1684 | bool do_rel_wr = ((req->cmd_flags & REQ_FUA) || | |
1685 | (req->cmd_flags & REQ_META)) && | |
1686 | (rq_data_dir(req) == WRITE) && | |
d0c97cfb | 1687 | (md->flags & MMC_BLK_REL_WR); |
f4c5522b | 1688 | |
54d49d77 PF |
1689 | memset(brq, 0, sizeof(struct mmc_blk_request)); |
1690 | brq->mrq.cmd = &brq->cmd; | |
1691 | brq->mrq.data = &brq->data; | |
1da177e4 | 1692 | |
54d49d77 PF |
1693 | brq->cmd.arg = blk_rq_pos(req); |
1694 | if (!mmc_card_blockaddr(card)) | |
1695 | brq->cmd.arg <<= 9; | |
1696 | brq->cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; | |
1697 | brq->data.blksz = 512; | |
1698 | brq->stop.opcode = MMC_STOP_TRANSMISSION; | |
1699 | brq->stop.arg = 0; | |
1700 | brq->stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC; | |
1701 | brq->data.blocks = blk_rq_sectors(req); | |
6a79e391 | 1702 | |
54d49d77 PF |
1703 | /* |
1704 | * The block layer doesn't support all sector count | |
1705 | * restrictions, so we need to be prepared for too big | |
1706 | * requests. | |
1707 | */ | |
1708 | if (brq->data.blocks > card->host->max_blk_count) | |
1709 | brq->data.blocks = card->host->max_blk_count; | |
1da177e4 | 1710 | |
2bf22b39 PW |
1711 | if (brq->data.blocks > 1) { |
1712 | /* | |
1713 | * After a read error, we redo the request one sector | |
1714 | * at a time in order to accurately determine which | |
1715 | * sectors can be read successfully. | |
1716 | */ | |
1717 | if (disable_multi) | |
1718 | brq->data.blocks = 1; | |
1719 | ||
1720 | /* Some controllers can't do multiblock reads due to hw bugs */ | |
1721 | if (card->host->caps2 & MMC_CAP2_NO_MULTI_READ && | |
1722 | rq_data_dir(req) == READ) | |
1723 | brq->data.blocks = 1; | |
1724 | } | |
d0c97cfb | 1725 | |
54d49d77 PF |
1726 | if (brq->data.blocks > 1 || do_rel_wr) { |
1727 | /* SPI multiblock writes terminate using a special | |
1728 | * token, not a STOP_TRANSMISSION request. | |
d0c97cfb | 1729 | */ |
54d49d77 PF |
1730 | if (!mmc_host_is_spi(card->host) || |
1731 | rq_data_dir(req) == READ) | |
1732 | brq->mrq.stop = &brq->stop; | |
1733 | readcmd = MMC_READ_MULTIPLE_BLOCK; | |
1734 | writecmd = MMC_WRITE_MULTIPLE_BLOCK; | |
1735 | } else { | |
1736 | brq->mrq.stop = NULL; | |
1737 | readcmd = MMC_READ_SINGLE_BLOCK; | |
1738 | writecmd = MMC_WRITE_BLOCK; | |
1739 | } | |
6fa3eb70 S |
1740 | #ifdef CONFIG_MTK_EMMC_CACHE |
1741 | /* for non-cacheable system data, | |
1742 | * the implementation of reliable write / force prg write, | |
1743 | * must be applied with mutli write cmd | |
1744 | * */ | |
1745 | if (mmc_card_mmc(card) && (card->ext_csd.cache_ctrl & 0x1)){ | |
1746 | writecmd = MMC_WRITE_MULTIPLE_BLOCK; | |
1747 | } | |
1748 | #endif | |
54d49d77 PF |
1749 | if (rq_data_dir(req) == READ) { |
1750 | brq->cmd.opcode = readcmd; | |
1751 | brq->data.flags |= MMC_DATA_READ; | |
1752 | } else { | |
1753 | brq->cmd.opcode = writecmd; | |
1754 | brq->data.flags |= MMC_DATA_WRITE; | |
1755 | } | |
d0c97cfb | 1756 | |
54d49d77 PF |
1757 | if (do_rel_wr) |
1758 | mmc_apply_rel_rw(brq, card, req); | |
f4c5522b | 1759 | |
4265900e SD |
1760 | /* |
1761 | * Data tag is used only during writing meta data to speed | |
1762 | * up write and any subsequent read of this meta data | |
1763 | */ | |
1764 | do_data_tag = (card->ext_csd.data_tag_unit_size) && | |
1765 | (req->cmd_flags & REQ_META) && | |
1766 | (rq_data_dir(req) == WRITE) && | |
1767 | ((brq->data.blocks * brq->data.blksz) >= | |
1768 | card->ext_csd.data_tag_unit_size); | |
1769 | ||
54d49d77 PF |
1770 | /* |
1771 | * Pre-defined multi-block transfers are preferable to | |
1772 | * open ended-ones (and necessary for reliable writes). | |
1773 | * However, it is not sufficient to just send CMD23, | |
1774 | * and avoid the final CMD12, as on an error condition | |
1775 | * CMD12 (stop) needs to be sent anyway. This, coupled | |
1776 | * with Auto-CMD23 enhancements provided by some | |
1777 | * hosts, means that the complexity of dealing | |
1778 | * with this is best left to the host. If CMD23 is | |
1779 | * supported by card and host, we'll fill sbc in and let | |
1780 | * the host deal with handling it correctly. This means | |
1781 | * that for hosts that don't expose MMC_CAP_CMD23, no | |
1782 | * change of behavior will be observed. | |
1783 | * | |
1784 | * N.B: Some MMC cards experience perf degradation. | |
1785 | * We'll avoid using CMD23-bounded multiblock writes for | |
1786 | * these, while retaining features like reliable writes. | |
1787 | */ | |
4265900e SD |
1788 | if ((md->flags & MMC_BLK_CMD23) && mmc_op_multi(brq->cmd.opcode) && |
1789 | (do_rel_wr || !(card->quirks & MMC_QUIRK_BLK_NO_CMD23) || | |
1790 | do_data_tag)) { | |
54d49d77 PF |
1791 | brq->sbc.opcode = MMC_SET_BLOCK_COUNT; |
1792 | brq->sbc.arg = brq->data.blocks | | |
4265900e SD |
1793 | (do_rel_wr ? (1 << 31) : 0) | |
1794 | (do_data_tag ? (1 << 29) : 0); | |
54d49d77 PF |
1795 | brq->sbc.flags = MMC_RSP_R1 | MMC_CMD_AC; |
1796 | brq->mrq.sbc = &brq->sbc; | |
1797 | } | |
98ccf149 | 1798 | |
54d49d77 PF |
1799 | mmc_set_data_timeout(&brq->data, card); |
1800 | ||
1801 | brq->data.sg = mqrq->sg; | |
1802 | brq->data.sg_len = mmc_queue_map_sg(mq, mqrq); | |
1803 | ||
6fa3eb70 S |
1804 | if (brq->data.sg_len > 1024) |
1805 | pr_err("%s:%d sglen = %x\n", __func__, __LINE__, brq->data.sg_len); | |
1806 | ||
54d49d77 PF |
1807 | /* |
1808 | * Adjust the sg list so it is the same size as the | |
1809 | * request. | |
1810 | */ | |
1811 | if (brq->data.blocks != blk_rq_sectors(req)) { | |
1812 | int i, data_size = brq->data.blocks << 9; | |
1813 | struct scatterlist *sg; | |
1814 | ||
1815 | for_each_sg(brq->data.sg, sg, brq->data.sg_len, i) { | |
1816 | data_size -= sg->length; | |
1817 | if (data_size <= 0) { | |
1818 | sg->length += data_size; | |
1819 | i++; | |
1820 | break; | |
6a79e391 | 1821 | } |
6a79e391 | 1822 | } |
54d49d77 | 1823 | brq->data.sg_len = i; |
6fa3eb70 | 1824 | pr_err("%s:%d sglen = %x\n", __func__, __LINE__, brq->data.sg_len); |
54d49d77 PF |
1825 | } |
1826 | ||
ee8a43a5 PF |
1827 | mqrq->mmc_active.mrq = &brq->mrq; |
1828 | mqrq->mmc_active.err_check = mmc_blk_err_check; | |
1829 | ||
54d49d77 PF |
1830 | mmc_queue_bounce_pre(mqrq); |
1831 | } | |
6a79e391 | 1832 | |
ce39f9d1 SJ |
1833 | static inline u8 mmc_calc_packed_hdr_segs(struct request_queue *q, |
1834 | struct mmc_card *card) | |
1835 | { | |
1836 | unsigned int hdr_sz = mmc_large_sector(card) ? 4096 : 512; | |
1837 | unsigned int max_seg_sz = queue_max_segment_size(q); | |
1838 | unsigned int len, nr_segs = 0; | |
1839 | ||
1840 | do { | |
1841 | len = min(hdr_sz, max_seg_sz); | |
1842 | hdr_sz -= len; | |
1843 | nr_segs++; | |
1844 | } while (hdr_sz); | |
1845 | ||
1846 | return nr_segs; | |
1847 | } | |
1848 | ||
1849 | static u8 mmc_blk_prep_packed_list(struct mmc_queue *mq, struct request *req) | |
1850 | { | |
1851 | struct request_queue *q = mq->queue; | |
1852 | struct mmc_card *card = mq->card; | |
1853 | struct request *cur = req, *next = NULL; | |
1854 | struct mmc_blk_data *md = mq->data; | |
1855 | struct mmc_queue_req *mqrq = mq->mqrq_cur; | |
1856 | bool en_rel_wr = card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN; | |
1857 | unsigned int req_sectors = 0, phys_segments = 0; | |
1858 | unsigned int max_blk_count, max_phys_segs; | |
1859 | bool put_back = true; | |
1860 | u8 max_packed_rw = 0; | |
1861 | u8 reqs = 0; | |
1862 | ||
1863 | if (!(md->flags & MMC_BLK_PACKED_CMD)) | |
1864 | goto no_packed; | |
1865 | ||
1866 | if ((rq_data_dir(cur) == WRITE) && | |
1867 | mmc_host_packed_wr(card->host)) | |
1868 | max_packed_rw = card->ext_csd.max_packed_writes; | |
1869 | ||
1870 | if (max_packed_rw == 0) | |
1871 | goto no_packed; | |
1872 | ||
1873 | if (mmc_req_rel_wr(cur) && | |
1874 | (md->flags & MMC_BLK_REL_WR) && !en_rel_wr) | |
1875 | goto no_packed; | |
1876 | ||
1877 | if (mmc_large_sector(card) && | |
1878 | !IS_ALIGNED(blk_rq_sectors(cur), 8)) | |
1879 | goto no_packed; | |
1880 | ||
1881 | mmc_blk_clear_packed(mqrq); | |
1882 | ||
1883 | max_blk_count = min(card->host->max_blk_count, | |
1884 | card->host->max_req_size >> 9); | |
1885 | if (unlikely(max_blk_count > 0xffff)) | |
1886 | max_blk_count = 0xffff; | |
1887 | ||
1888 | max_phys_segs = queue_max_segments(q); | |
1889 | req_sectors += blk_rq_sectors(cur); | |
1890 | phys_segments += cur->nr_phys_segments; | |
1891 | ||
1892 | if (rq_data_dir(cur) == WRITE) { | |
1893 | req_sectors += mmc_large_sector(card) ? 8 : 1; | |
1894 | phys_segments += mmc_calc_packed_hdr_segs(q, card); | |
1895 | } | |
1896 | ||
1897 | do { | |
1898 | if (reqs >= max_packed_rw - 1) { | |
1899 | put_back = false; | |
1900 | break; | |
1901 | } | |
1902 | ||
1903 | spin_lock_irq(q->queue_lock); | |
1904 | next = blk_fetch_request(q); | |
1905 | spin_unlock_irq(q->queue_lock); | |
1906 | if (!next) { | |
1907 | put_back = false; | |
1908 | break; | |
1909 | } | |
1910 | ||
1911 | if (mmc_large_sector(card) && | |
1912 | !IS_ALIGNED(blk_rq_sectors(next), 8)) | |
1913 | break; | |
1914 | ||
1915 | if (next->cmd_flags & REQ_DISCARD || | |
1916 | next->cmd_flags & REQ_FLUSH) | |
1917 | break; | |
1918 | ||
1919 | if (rq_data_dir(cur) != rq_data_dir(next)) | |
1920 | break; | |
1921 | ||
1922 | if (mmc_req_rel_wr(next) && | |
1923 | (md->flags & MMC_BLK_REL_WR) && !en_rel_wr) | |
1924 | break; | |
1925 | ||
1926 | req_sectors += blk_rq_sectors(next); | |
1927 | if (req_sectors > max_blk_count) | |
1928 | break; | |
1929 | ||
1930 | phys_segments += next->nr_phys_segments; | |
1931 | if (phys_segments > max_phys_segs) | |
1932 | break; | |
1933 | ||
1934 | list_add_tail(&next->queuelist, &mqrq->packed->list); | |
1935 | cur = next; | |
1936 | reqs++; | |
1937 | } while (1); | |
1938 | ||
1939 | if (put_back) { | |
1940 | spin_lock_irq(q->queue_lock); | |
1941 | blk_requeue_request(q, next); | |
1942 | spin_unlock_irq(q->queue_lock); | |
1943 | } | |
1944 | ||
1945 | if (reqs > 0) { | |
1946 | list_add(&req->queuelist, &mqrq->packed->list); | |
1947 | mqrq->packed->nr_entries = ++reqs; | |
1948 | mqrq->packed->retries = reqs; | |
1949 | return reqs; | |
1950 | } | |
1951 | ||
1952 | no_packed: | |
1953 | mqrq->cmd_type = MMC_PACKED_NONE; | |
1954 | return 0; | |
1955 | } | |
1956 | ||
1957 | static void mmc_blk_packed_hdr_wrq_prep(struct mmc_queue_req *mqrq, | |
1958 | struct mmc_card *card, | |
1959 | struct mmc_queue *mq) | |
1960 | { | |
1961 | struct mmc_blk_request *brq = &mqrq->brq; | |
1962 | struct request *req = mqrq->req; | |
1963 | struct request *prq; | |
1964 | struct mmc_blk_data *md = mq->data; | |
1965 | struct mmc_packed *packed = mqrq->packed; | |
1966 | bool do_rel_wr, do_data_tag; | |
1967 | u32 *packed_cmd_hdr; | |
1968 | u8 hdr_blocks; | |
1969 | u8 i = 1; | |
1970 | ||
1971 | BUG_ON(!packed); | |
1972 | ||
1973 | mqrq->cmd_type = MMC_PACKED_WRITE; | |
1974 | packed->blocks = 0; | |
1975 | packed->idx_failure = MMC_PACKED_NR_IDX; | |
1976 | ||
1977 | packed_cmd_hdr = packed->cmd_hdr; | |
1978 | memset(packed_cmd_hdr, 0, sizeof(packed->cmd_hdr)); | |
1979 | packed_cmd_hdr[0] = (packed->nr_entries << 16) | | |
1980 | (PACKED_CMD_WR << 8) | PACKED_CMD_VER; | |
1981 | hdr_blocks = mmc_large_sector(card) ? 8 : 1; | |
1982 | ||
1983 | /* | |
1984 | * Argument for each entry of packed group | |
1985 | */ | |
1986 | list_for_each_entry(prq, &packed->list, queuelist) { | |
1987 | do_rel_wr = mmc_req_rel_wr(prq) && (md->flags & MMC_BLK_REL_WR); | |
1988 | do_data_tag = (card->ext_csd.data_tag_unit_size) && | |
1989 | (prq->cmd_flags & REQ_META) && | |
1990 | (rq_data_dir(prq) == WRITE) && | |
1991 | ((brq->data.blocks * brq->data.blksz) >= | |
1992 | card->ext_csd.data_tag_unit_size); | |
1993 | /* Argument of CMD23 */ | |
1994 | packed_cmd_hdr[(i * 2)] = | |
1995 | (do_rel_wr ? MMC_CMD23_ARG_REL_WR : 0) | | |
1996 | (do_data_tag ? MMC_CMD23_ARG_TAG_REQ : 0) | | |
1997 | blk_rq_sectors(prq); | |
1998 | /* Argument of CMD18 or CMD25 */ | |
1999 | packed_cmd_hdr[((i * 2)) + 1] = | |
2000 | mmc_card_blockaddr(card) ? | |
2001 | blk_rq_pos(prq) : blk_rq_pos(prq) << 9; | |
2002 | packed->blocks += blk_rq_sectors(prq); | |
2003 | i++; | |
2004 | } | |
2005 | ||
2006 | memset(brq, 0, sizeof(struct mmc_blk_request)); | |
2007 | brq->mrq.cmd = &brq->cmd; | |
2008 | brq->mrq.data = &brq->data; | |
2009 | brq->mrq.sbc = &brq->sbc; | |
2010 | brq->mrq.stop = &brq->stop; | |
2011 | ||
2012 | brq->sbc.opcode = MMC_SET_BLOCK_COUNT; | |
2013 | brq->sbc.arg = MMC_CMD23_ARG_PACKED | (packed->blocks + hdr_blocks); | |
2014 | brq->sbc.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
2015 | ||
2016 | brq->cmd.opcode = MMC_WRITE_MULTIPLE_BLOCK; | |
2017 | brq->cmd.arg = blk_rq_pos(req); | |
2018 | if (!mmc_card_blockaddr(card)) | |
2019 | brq->cmd.arg <<= 9; | |
2020 | brq->cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; | |
2021 | ||
2022 | brq->data.blksz = 512; | |
2023 | brq->data.blocks = packed->blocks + hdr_blocks; | |
2024 | brq->data.flags |= MMC_DATA_WRITE; | |
2025 | ||
2026 | brq->stop.opcode = MMC_STOP_TRANSMISSION; | |
2027 | brq->stop.arg = 0; | |
2028 | brq->stop.flags = MMC_RSP_SPI_R1B | MMC_RSP_R1B | MMC_CMD_AC; | |
2029 | ||
2030 | mmc_set_data_timeout(&brq->data, card); | |
2031 | ||
2032 | brq->data.sg = mqrq->sg; | |
2033 | brq->data.sg_len = mmc_queue_map_sg(mq, mqrq); | |
6fa3eb70 | 2034 | pr_err("%s: sglen = %d\n", __func__, brq->data.sg_len); |
ce39f9d1 SJ |
2035 | |
2036 | mqrq->mmc_active.mrq = &brq->mrq; | |
2037 | mqrq->mmc_active.err_check = mmc_blk_packed_err_check; | |
2038 | ||
2039 | mmc_queue_bounce_pre(mqrq); | |
2040 | } | |
2041 | ||
67716327 AH |
2042 | static int mmc_blk_cmd_err(struct mmc_blk_data *md, struct mmc_card *card, |
2043 | struct mmc_blk_request *brq, struct request *req, | |
2044 | int ret) | |
2045 | { | |
ce39f9d1 SJ |
2046 | struct mmc_queue_req *mq_rq; |
2047 | mq_rq = container_of(brq, struct mmc_queue_req, brq); | |
2048 | ||
67716327 AH |
2049 | /* |
2050 | * If this is an SD card and we're writing, we can first | |
2051 | * mark the known good sectors as ok. | |
2052 | * | |
2053 | * If the card is not SD, we can still ok written sectors | |
2054 | * as reported by the controller (which might be less than | |
2055 | * the real number of written sectors, but never more). | |
2056 | */ | |
2057 | if (mmc_card_sd(card)) { | |
2058 | u32 blocks; | |
2059 | ||
2060 | blocks = mmc_sd_num_wr_blocks(card); | |
2061 | if (blocks != (u32)-1) { | |
ecf8b5d0 | 2062 | ret = blk_end_request(req, 0, blocks << 9); |
67716327 AH |
2063 | } |
2064 | } else { | |
ce39f9d1 SJ |
2065 | if (!mmc_packed_cmd(mq_rq->cmd_type)) |
2066 | ret = blk_end_request(req, 0, brq->data.bytes_xfered); | |
67716327 AH |
2067 | } |
2068 | return ret; | |
2069 | } | |
2070 | ||
ce39f9d1 SJ |
2071 | static int mmc_blk_end_packed_req(struct mmc_queue_req *mq_rq) |
2072 | { | |
2073 | struct request *prq; | |
2074 | struct mmc_packed *packed = mq_rq->packed; | |
2075 | int idx = packed->idx_failure, i = 0; | |
2076 | int ret = 0; | |
2077 | ||
2078 | BUG_ON(!packed); | |
2079 | ||
2080 | while (!list_empty(&packed->list)) { | |
2081 | prq = list_entry_rq(packed->list.next); | |
2082 | if (idx == i) { | |
2083 | /* retry from error index */ | |
2084 | packed->nr_entries -= idx; | |
2085 | mq_rq->req = prq; | |
2086 | ret = 1; | |
2087 | ||
2088 | if (packed->nr_entries == MMC_PACKED_NR_SINGLE) { | |
2089 | list_del_init(&prq->queuelist); | |
2090 | mmc_blk_clear_packed(mq_rq); | |
2091 | } | |
2092 | return ret; | |
2093 | } | |
2094 | list_del_init(&prq->queuelist); | |
2095 | blk_end_request(prq, 0, blk_rq_bytes(prq)); | |
2096 | i++; | |
2097 | } | |
2098 | ||
2099 | mmc_blk_clear_packed(mq_rq); | |
2100 | return ret; | |
2101 | } | |
2102 | ||
2103 | static void mmc_blk_abort_packed_req(struct mmc_queue_req *mq_rq) | |
2104 | { | |
2105 | struct request *prq; | |
2106 | struct mmc_packed *packed = mq_rq->packed; | |
2107 | ||
2108 | BUG_ON(!packed); | |
2109 | ||
2110 | while (!list_empty(&packed->list)) { | |
2111 | prq = list_entry_rq(packed->list.next); | |
2112 | list_del_init(&prq->queuelist); | |
2113 | blk_end_request(prq, -EIO, blk_rq_bytes(prq)); | |
2114 | } | |
2115 | ||
2116 | mmc_blk_clear_packed(mq_rq); | |
2117 | } | |
2118 | ||
2119 | static void mmc_blk_revert_packed_req(struct mmc_queue *mq, | |
2120 | struct mmc_queue_req *mq_rq) | |
2121 | { | |
2122 | struct request *prq; | |
2123 | struct request_queue *q = mq->queue; | |
2124 | struct mmc_packed *packed = mq_rq->packed; | |
2125 | ||
2126 | BUG_ON(!packed); | |
2127 | ||
2128 | while (!list_empty(&packed->list)) { | |
2129 | prq = list_entry_rq(packed->list.prev); | |
2130 | if (prq->queuelist.prev != &packed->list) { | |
2131 | list_del_init(&prq->queuelist); | |
2132 | spin_lock_irq(q->queue_lock); | |
2133 | blk_requeue_request(mq->queue, prq); | |
2134 | spin_unlock_irq(q->queue_lock); | |
2135 | } else { | |
2136 | list_del_init(&prq->queuelist); | |
2137 | } | |
2138 | } | |
2139 | ||
2140 | mmc_blk_clear_packed(mq_rq); | |
2141 | } | |
6fa3eb70 S |
2142 | #if defined(FEATURE_STORAGE_PERF_INDEX) |
2143 | #define PRT_TIME_PERIOD 500000000 | |
2144 | #define UP_LIMITS_4BYTE 4294967295UL //((4*1024*1024*1024)-1) | |
2145 | #define ID_CNT 10 | |
2146 | pid_t mmcqd[ID_CNT]={0}; | |
2147 | bool start_async_req[ID_CNT] = {0}; | |
2148 | unsigned long long start_async_req_time[ID_CNT] = {0}; | |
2149 | static unsigned long long mmcqd_tag_t1[ID_CNT]={0}, mmccid_tag_t1=0; | |
2150 | unsigned long long mmcqd_t_usage_wr[ID_CNT]={0}, mmcqd_t_usage_rd[ID_CNT]={0}; | |
2151 | unsigned int mmcqd_rq_size_wr[ID_CNT]={0}, mmcqd_rq_size_rd[ID_CNT]={0}; | |
2152 | static unsigned int mmcqd_wr_offset_tag[ID_CNT]={0}, mmcqd_rd_offset_tag[ID_CNT]={0}, mmcqd_wr_offset[ID_CNT]={0}, mmcqd_rd_offset[ID_CNT]={0}; | |
2153 | static unsigned int mmcqd_wr_bit[ID_CNT]={0},mmcqd_wr_tract[ID_CNT]={0}; | |
2154 | static unsigned int mmcqd_rd_bit[ID_CNT]={0},mmcqd_rd_tract[ID_CNT]={0}; | |
2155 | static unsigned int mmcqd_wr_break[ID_CNT]={0}, mmcqd_rd_break[ID_CNT]={0}; | |
2156 | unsigned int mmcqd_rq_count[ID_CNT]={0}, mmcqd_wr_rq_count[ID_CNT]={0}, mmcqd_rd_rq_count[ID_CNT]={0}; | |
2157 | extern u32 g_u32_cid[4]; | |
2158 | #ifdef FEATURE_STORAGE_META_LOG | |
2159 | int check_perdev_minors = CONFIG_MMC_BLOCK_MINORS; | |
2160 | struct metadata_rwlogger metadata_logger[10] = {{{0}}}; | |
2161 | #endif | |
ce39f9d1 | 2162 | |
6fa3eb70 S |
2163 | unsigned int mmcqd_work_percent[ID_CNT]={0}; |
2164 | unsigned int mmcqd_w_throughput[ID_CNT]={0}; | |
2165 | unsigned int mmcqd_r_throughput[ID_CNT]={0}; | |
2166 | unsigned int mmcqd_read_clear[ID_CNT]={0}; | |
2167 | ||
2168 | static void g_var_clear(unsigned int idx) | |
2169 | { | |
2170 | mmcqd_t_usage_wr[idx]=0; | |
2171 | mmcqd_t_usage_rd[idx]=0; | |
2172 | mmcqd_rq_size_wr[idx]=0; | |
2173 | mmcqd_rq_size_rd[idx]=0; | |
2174 | mmcqd_rq_count[idx]=0; | |
2175 | mmcqd_wr_offset[idx]=0; | |
2176 | mmcqd_rd_offset[idx]=0; | |
2177 | mmcqd_wr_break[idx]=0; | |
2178 | mmcqd_rd_break[idx]=0; | |
2179 | mmcqd_wr_tract[idx]=0; | |
2180 | mmcqd_wr_bit[idx]=0; | |
2181 | mmcqd_rd_tract[idx]=0; | |
2182 | mmcqd_rd_bit[idx]=0; | |
2183 | mmcqd_wr_rq_count[idx]=0; | |
2184 | mmcqd_rd_rq_count[idx]=0; | |
2185 | } | |
2186 | ||
2187 | unsigned int find_mmcqd_index(void) | |
2188 | { | |
2189 | pid_t mmcqd_pid=0; | |
2190 | unsigned int idx=0; | |
2191 | unsigned char i=0; | |
2192 | ||
2193 | mmcqd_pid = task_pid_nr(current); | |
2194 | ||
2195 | if(mmcqd[0] ==0) { | |
2196 | mmcqd[0] = mmcqd_pid; | |
2197 | start_async_req[0]=0; | |
2198 | } | |
2199 | ||
2200 | for(i=0;i<ID_CNT;i++) | |
2201 | { | |
2202 | if(mmcqd_pid == mmcqd[i]) | |
2203 | { | |
2204 | idx=i; | |
2205 | break; | |
2206 | } | |
2207 | if ((mmcqd[i] == 0) ||( i==ID_CNT-1)) | |
2208 | { | |
2209 | mmcqd[i]=mmcqd_pid; | |
2210 | start_async_req[i]=0; | |
2211 | idx=i; | |
2212 | break; | |
2213 | } | |
2214 | } | |
2215 | return idx; | |
2216 | } | |
2217 | ||
2218 | #endif | |
2219 | //#undef FEATURE_STORAGE_PID_LOGGER | |
2220 | #if defined(FEATURE_STORAGE_PID_LOGGER) | |
2221 | ||
2222 | struct struct_pid_logger g_pid_logger[PID_ID_CNT]={{0,0,{0},{0},{0},{0}}}; | |
2223 | ||
2224 | ||
2225 | ||
2226 | unsigned char *page_logger = NULL; | |
2227 | spinlock_t g_locker; | |
2228 | ||
2229 | #endif | |
ee8a43a5 | 2230 | static int mmc_blk_issue_rw_rq(struct mmc_queue *mq, struct request *rqc) |
54d49d77 PF |
2231 | { |
2232 | struct mmc_blk_data *md = mq->data; | |
2233 | struct mmc_card *card = md->queue.card; | |
2234 | struct mmc_blk_request *brq = &mq->mqrq_cur->brq; | |
67716327 | 2235 | int ret = 1, disable_multi = 0, retry = 0, type; |
d78d4a8a | 2236 | enum mmc_blk_status status; |
ee8a43a5 | 2237 | struct mmc_queue_req *mq_rq; |
a5075eb9 | 2238 | struct request *req = rqc; |
ee8a43a5 | 2239 | struct mmc_async_req *areq; |
ce39f9d1 SJ |
2240 | const u8 packed_nr = 2; |
2241 | u8 reqs = 0; | |
6fa3eb70 S |
2242 | unsigned long long time1 = 0; |
2243 | #if defined(FEATURE_STORAGE_PERF_INDEX) | |
2244 | pid_t mmcqd_pid=0; | |
2245 | unsigned long long t_period=0, t_usage=0; | |
2246 | unsigned int t_percent=0; | |
2247 | unsigned int perf_meter=0; | |
2248 | unsigned int rq_byte=0,rq_sector=0,sect_offset=0; | |
2249 | unsigned int diversity=0; | |
2250 | unsigned int idx=0; | |
2251 | #ifdef FEATURE_STORAGE_META_LOG | |
2252 | unsigned int mmcmetaindex=0; | |
2253 | #endif | |
2254 | #endif | |
2255 | #if defined(FEATURE_STORAGE_PID_LOGGER) | |
2256 | unsigned int index=0; | |
2257 | #endif | |
1da177e4 | 2258 | |
ee8a43a5 PF |
2259 | if (!rqc && !mq->mqrq_prev->req) |
2260 | return 0; | |
6fa3eb70 | 2261 | time1 = sched_clock(); |
98ccf149 | 2262 | |
ce39f9d1 SJ |
2263 | if (rqc) |
2264 | reqs = mmc_blk_prep_packed_list(mq, rqc); | |
6fa3eb70 S |
2265 | #if defined(FEATURE_STORAGE_PERF_INDEX) |
2266 | mmcqd_pid = task_pid_nr(current); | |
2267 | ||
2268 | idx = find_mmcqd_index(); | |
2269 | ||
2270 | mmcqd_read_clear[idx] = 1; | |
2271 | if(mmccid_tag_t1==0) | |
2272 | mmccid_tag_t1 = time1; | |
2273 | t_period = time1 - mmccid_tag_t1; | |
2274 | if(t_period >= (unsigned long long )((PRT_TIME_PERIOD)*(unsigned long long )10)) | |
2275 | { | |
2276 | xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "MMC Queue Thread:%d, %d, %d, %d, %d \n", mmcqd[0], mmcqd[1], mmcqd[2], mmcqd[3], mmcqd[4]); | |
2277 | xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "MMC CID: %lx %lx %lx %lx \n", g_u32_cid[0], g_u32_cid[1], g_u32_cid[2], g_u32_cid[3]); | |
2278 | mmccid_tag_t1 = time1; | |
2279 | } | |
2280 | if(mmcqd_tag_t1[idx]==0) | |
2281 | mmcqd_tag_t1[idx] = time1; | |
2282 | t_period = time1 - mmcqd_tag_t1[idx]; | |
2283 | ||
2284 | if(t_period >= (unsigned long long )PRT_TIME_PERIOD) | |
2285 | { | |
2286 | mmcqd_read_clear[idx] = 2; | |
2287 | mmcqd_work_percent[idx] = 1; | |
2288 | mmcqd_r_throughput[idx] = 0; | |
2289 | mmcqd_w_throughput[idx] = 0; | |
2290 | t_usage = mmcqd_t_usage_wr [idx] + mmcqd_t_usage_rd[idx]; | |
2291 | if(t_period > t_usage*100) | |
2292 | xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "mmcqd:%d Workload < 1%%, duty %lld, period %lld, req_cnt=%d \n", mmcqd[idx], t_usage, t_period, mmcqd_rq_count[idx]); | |
2293 | else | |
2294 | { | |
2295 | do_div(t_period, 100); //boundary issue | |
2296 | t_percent =((unsigned int)t_usage)/((unsigned int)t_period); | |
2297 | mmcqd_work_percent[idx] = t_percent; | |
2298 | xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "mmcqd:%d Workload=%d%%, duty %lld, period %lld00, req_cnt=%d \n", mmcqd[idx], t_percent, t_usage, t_period, mmcqd_rq_count[idx]); //period %lld00 == period %lld x100 | |
2299 | } | |
2300 | if(mmcqd_wr_rq_count[idx] >= 2) | |
2301 | { | |
2302 | diversity = mmcqd_wr_offset[idx]/(mmcqd_wr_rq_count[idx]-1); | |
2303 | xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "mmcqd:%d Write Diversity=%d sectors offset, req_cnt=%d, break_cnt=%d, tract_cnt=%d, bit_cnt=%d\n", mmcqd[idx], diversity, mmcqd_wr_rq_count[idx], mmcqd_wr_break[idx], mmcqd_wr_tract[idx], mmcqd_wr_bit[idx]); | |
2304 | } | |
2305 | if(mmcqd_rd_rq_count[idx] >= 2) | |
2306 | { | |
2307 | diversity = mmcqd_rd_offset[idx]/(mmcqd_rd_rq_count[idx]-1); | |
2308 | xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "mmcqd:%d Read Diversity=%d sectors offset, req_cnt=%d, break_cnt=%d, tract_cnt=%d, bit_cnt=%d\n", mmcqd[idx], diversity, mmcqd_rd_rq_count[idx], mmcqd_rd_break[idx], mmcqd_rd_tract[idx], mmcqd_rd_bit[idx]); | |
2309 | } | |
2310 | if(mmcqd_t_usage_wr[idx]) | |
2311 | { | |
2312 | do_div(mmcqd_t_usage_wr[idx], 1000000); //boundary issue | |
2313 | if(mmcqd_t_usage_wr[idx]) // discard print if duration will <1ms | |
2314 | { | |
2315 | perf_meter = (mmcqd_rq_size_wr[idx])/((unsigned int)mmcqd_t_usage_wr[idx]); //kb/s | |
2316 | mmcqd_w_throughput[idx] = perf_meter; | |
2317 | xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "mmcqd:%d Write Throughput=%d kB/s, size: %d bytes, time:%lld ms\n", mmcqd[idx], perf_meter, mmcqd_rq_size_wr[idx], mmcqd_t_usage_wr[idx]); | |
2318 | } | |
2319 | } | |
2320 | if(mmcqd_t_usage_rd[idx]) | |
2321 | { | |
2322 | do_div(mmcqd_t_usage_rd[idx], 1000000); //boundary issue | |
2323 | if(mmcqd_t_usage_rd[idx]) // discard print if duration will <1ms | |
2324 | { | |
2325 | perf_meter = (mmcqd_rq_size_rd[idx])/((unsigned int)mmcqd_t_usage_rd[idx]); //kb/s | |
2326 | mmcqd_r_throughput[idx] = perf_meter; | |
2327 | xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "mmcqd:%d Read Throughput=%d kB/s, size: %d bytes, time:%lld ms\n", mmcqd[idx], perf_meter, mmcqd_rq_size_rd[idx], mmcqd_t_usage_rd[idx]); | |
2328 | } | |
2329 | } | |
2330 | mmcqd_tag_t1[idx]=time1; | |
2331 | g_var_clear(idx); | |
2332 | #ifdef FEATURE_STORAGE_META_LOG | |
2333 | mmcmetaindex = mmc_get_devidx(md->disk); | |
2334 | xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "mmcqd metarw WR:%d NWR:%d HR:%d WDR:%d HDR:%d WW:%d NWW:%d HW:%d\n", | |
2335 | metadata_logger[mmcmetaindex].metadata_rw_logger[0], metadata_logger[mmcmetaindex].metadata_rw_logger[1], | |
2336 | metadata_logger[mmcmetaindex].metadata_rw_logger[2], metadata_logger[mmcmetaindex].metadata_rw_logger[3], | |
2337 | metadata_logger[mmcmetaindex].metadata_rw_logger[4], metadata_logger[mmcmetaindex].metadata_rw_logger[5], | |
2338 | metadata_logger[mmcmetaindex].metadata_rw_logger[6], metadata_logger[mmcmetaindex].metadata_rw_logger[7]); | |
2339 | clear_metadata_rw_status(md->disk->first_minor); | |
2340 | #endif | |
2341 | #if defined(FEATURE_STORAGE_PID_LOGGER) | |
2342 | do { | |
2343 | int i; | |
2344 | for(index=0; index<PID_ID_CNT; index++) { | |
2345 | ||
2346 | if( g_pid_logger[index].current_pid!=0 && g_pid_logger[index].current_pid == mmcqd_pid) | |
2347 | break; | |
2348 | } | |
2349 | if( index == PID_ID_CNT ) | |
2350 | break; | |
2351 | for( i=0; i<PID_LOGGER_COUNT; i++) { | |
2352 | //printk(KERN_INFO"hank mmcqd %d %d", g_pid_logger[index].pid_logger[i], mmcqd_pid); | |
2353 | if( g_pid_logger[index].pid_logger[i] == 0) | |
2354 | break; | |
2355 | sprintf (g_pid_logger[index].pid_buffer+i*37, "{%05d:%05d:%08d:%05d:%08d}", g_pid_logger[index].pid_logger[i], g_pid_logger[index].pid_logger_counter[i], g_pid_logger[index].pid_logger_length[i], g_pid_logger[index].pid_logger_r_counter[i], g_pid_logger[index].pid_logger_r_length[i]); | |
2356 | ||
2357 | } | |
2358 | if( i != 0) { | |
2359 | xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "mmcqd pid:%d %s\n", g_pid_logger[index].current_pid, g_pid_logger[index].pid_buffer); | |
2360 | //xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "sizeof(&(g_pid_logger[index].pid_logger)):%d\n", sizeof(unsigned short)*PID_LOGGER_COUNT); | |
2361 | //memset( &(g_pid_logger[index].pid_logger), 0, sizeof(struct struct_pid_logger)-(unsigned long)&(((struct struct_pid_logger *)0)->pid_logger)); | |
2362 | memset( &(g_pid_logger[index].pid_logger), 0, sizeof(unsigned short)*PID_LOGGER_COUNT); | |
2363 | memset( &(g_pid_logger[index].pid_logger_counter), 0, sizeof(unsigned short)*PID_LOGGER_COUNT); | |
2364 | memset( &(g_pid_logger[index].pid_logger_length), 0, sizeof(unsigned int)*PID_LOGGER_COUNT); | |
2365 | memset( &(g_pid_logger[index].pid_logger_r_counter), 0, sizeof(unsigned short)*PID_LOGGER_COUNT); | |
2366 | memset( &(g_pid_logger[index].pid_logger_r_length), 0, sizeof(unsigned int)*PID_LOGGER_COUNT); | |
2367 | memset( &(g_pid_logger[index].pid_buffer), 0, sizeof(char)*1024); | |
2368 | ||
2369 | ||
2370 | } | |
2371 | g_pid_logger[index].pid_buffer[0] = '\0'; | |
2372 | ||
2373 | } while(0); | |
2374 | #endif | |
2375 | ||
2376 | #if defined(FEATURE_STORAGE_VMSTAT_LOGGER) | |
2377 | xlog_printk(ANDROID_LOG_DEBUG, "BLOCK_TAG", "vmstat (FP:%ld)(FD:%ld)(ND:%ld)(WB:%ld)(NW:%ld)\n", | |
2378 | ((global_page_state(NR_FILE_PAGES)) << (PAGE_SHIFT - 10)), | |
2379 | ((global_page_state(NR_FILE_DIRTY)) << (PAGE_SHIFT - 10)), | |
2380 | ((global_page_state(NR_DIRTIED)) << (PAGE_SHIFT - 10)), | |
2381 | ((global_page_state(NR_WRITEBACK)) << (PAGE_SHIFT - 10)), | |
2382 | ((global_page_state(NR_WRITTEN)) << (PAGE_SHIFT - 10))); | |
2383 | #endif | |
ce39f9d1 | 2384 | |
6fa3eb70 S |
2385 | } |
2386 | if( rqc ) | |
2387 | { | |
2388 | rq_byte = blk_rq_bytes(rqc); | |
2389 | rq_sector = blk_rq_sectors(rqc); | |
2390 | if(rq_data_dir(rqc) == WRITE) | |
2391 | { | |
2392 | if(mmcqd_wr_offset_tag[idx]>0) | |
2393 | { | |
2394 | sect_offset = abs(blk_rq_pos(rqc) - mmcqd_wr_offset_tag[idx]); | |
2395 | mmcqd_wr_offset[idx] += sect_offset; | |
2396 | if(sect_offset == 1) | |
2397 | mmcqd_wr_break[idx]++; | |
2398 | } | |
2399 | mmcqd_wr_offset_tag[idx] = blk_rq_pos(rqc) + rq_sector; | |
2400 | if(rq_sector <= 1) //512 bytes | |
2401 | mmcqd_wr_bit[idx] ++; | |
2402 | else if(rq_sector >= 1016) //508kB | |
2403 | mmcqd_wr_tract[idx] ++; | |
2404 | } | |
2405 | else //read | |
2406 | { | |
2407 | if(mmcqd_rd_offset_tag[idx]>0) | |
2408 | { | |
2409 | sect_offset = abs(blk_rq_pos(rqc) - mmcqd_rd_offset_tag[idx]); | |
2410 | mmcqd_rd_offset[idx] += sect_offset; | |
2411 | if(sect_offset == 1) | |
2412 | mmcqd_rd_break[idx]++; | |
2413 | } | |
2414 | mmcqd_rd_offset_tag[idx] = blk_rq_pos(rqc) + rq_sector; | |
2415 | if(rq_sector <= 1) //512 bytes | |
2416 | mmcqd_rd_bit[idx] ++; | |
2417 | else if(rq_sector >= 1016) //508kB | |
2418 | mmcqd_rd_tract[idx] ++; | |
2419 | } | |
2420 | } | |
2421 | #endif | |
ee8a43a5 PF |
2422 | do { |
2423 | if (rqc) { | |
a5075eb9 SD |
2424 | /* |
2425 | * When 4KB native sector is enabled, only 8 blocks | |
2426 | * multiple read or write is allowed | |
2427 | */ | |
2428 | if ((brq->data.blocks & 0x07) && | |
2429 | (card->ext_csd.data_sector_size == 4096)) { | |
2430 | pr_err("%s: Transfer size is not 4KB sector size aligned\n", | |
2431 | req->rq_disk->disk_name); | |
ce39f9d1 | 2432 | mq_rq = mq->mqrq_cur; |
a5075eb9 SD |
2433 | goto cmd_abort; |
2434 | } | |
ce39f9d1 SJ |
2435 | |
2436 | if (reqs >= packed_nr) | |
2437 | mmc_blk_packed_hdr_wrq_prep(mq->mqrq_cur, | |
2438 | card, mq); | |
2439 | else | |
2440 | mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq); | |
ee8a43a5 PF |
2441 | areq = &mq->mqrq_cur->mmc_active; |
2442 | } else | |
2443 | areq = NULL; | |
2444 | areq = mmc_start_req(card->host, areq, (int *) &status); | |
2220eedf KD |
2445 | if (!areq) { |
2446 | if (status == MMC_BLK_NEW_REQUEST) | |
2447 | mq->flags |= MMC_QUEUE_NEW_REQUEST; | |
ee8a43a5 | 2448 | return 0; |
2220eedf | 2449 | } |
ee8a43a5 PF |
2450 | |
2451 | mq_rq = container_of(areq, struct mmc_queue_req, mmc_active); | |
2452 | brq = &mq_rq->brq; | |
2453 | req = mq_rq->req; | |
67716327 | 2454 | type = rq_data_dir(req) == READ ? MMC_BLK_READ : MMC_BLK_WRITE; |
ee8a43a5 | 2455 | mmc_queue_bounce_post(mq_rq); |
98ccf149 | 2456 | |
d78d4a8a PF |
2457 | switch (status) { |
2458 | case MMC_BLK_SUCCESS: | |
2459 | case MMC_BLK_PARTIAL: | |
2460 | /* | |
2461 | * A block was successfully transferred. | |
2462 | */ | |
67716327 | 2463 | mmc_blk_reset_success(md, type); |
ce39f9d1 SJ |
2464 | |
2465 | if (mmc_packed_cmd(mq_rq->cmd_type)) { | |
2466 | ret = mmc_blk_end_packed_req(mq_rq); | |
2467 | break; | |
2468 | } else { | |
2469 | ret = blk_end_request(req, 0, | |
d78d4a8a | 2470 | brq->data.bytes_xfered); |
ce39f9d1 SJ |
2471 | } |
2472 | ||
6fa3eb70 S |
2473 | // if (card && card->host && card->host->areq) |
2474 | // met_mmc_end(card->host, card->host->areq); | |
2475 | ||
67716327 AH |
2476 | /* |
2477 | * If the blk_end_request function returns non-zero even | |
2478 | * though all data has been transferred and no errors | |
2479 | * were returned by the host controller, it's a bug. | |
2480 | */ | |
ee8a43a5 | 2481 | if (status == MMC_BLK_SUCCESS && ret) { |
a3c76eb9 | 2482 | pr_err("%s BUG rq_tot %d d_xfer %d\n", |
ee8a43a5 PF |
2483 | __func__, blk_rq_bytes(req), |
2484 | brq->data.bytes_xfered); | |
2485 | rqc = NULL; | |
2486 | goto cmd_abort; | |
2487 | } | |
d78d4a8a PF |
2488 | break; |
2489 | case MMC_BLK_CMD_ERR: | |
67716327 AH |
2490 | ret = mmc_blk_cmd_err(md, card, brq, req, ret); |
2491 | if (!mmc_blk_reset(md, card->host, type)) | |
2492 | break; | |
2493 | goto cmd_abort; | |
d78d4a8a PF |
2494 | case MMC_BLK_RETRY: |
2495 | if (retry++ < 5) | |
a01f3ccf | 2496 | break; |
67716327 | 2497 | /* Fall through */ |
d78d4a8a | 2498 | case MMC_BLK_ABORT: |
67716327 AH |
2499 | if (!mmc_blk_reset(md, card->host, type)) |
2500 | break; | |
4c2b8f26 | 2501 | goto cmd_abort; |
67716327 AH |
2502 | case MMC_BLK_DATA_ERR: { |
2503 | int err; | |
2504 | ||
2505 | err = mmc_blk_reset(md, card->host, type); | |
2506 | if (!err) | |
2507 | break; | |
ce39f9d1 SJ |
2508 | if (err == -ENODEV || |
2509 | mmc_packed_cmd(mq_rq->cmd_type)) | |
67716327 AH |
2510 | goto cmd_abort; |
2511 | /* Fall through */ | |
2512 | } | |
2513 | case MMC_BLK_ECC_ERR: | |
2514 | if (brq->data.blocks > 1) { | |
2515 | /* Redo read one sector at a time */ | |
2516 | pr_warning("%s: retrying using single block read\n", | |
2517 | req->rq_disk->disk_name); | |
2518 | disable_multi = 1; | |
2519 | break; | |
2520 | } | |
d78d4a8a PF |
2521 | /* |
2522 | * After an error, we redo I/O one sector at a | |
2523 | * time, so we only reach here after trying to | |
2524 | * read a single sector. | |
2525 | */ | |
ecf8b5d0 | 2526 | ret = blk_end_request(req, -EIO, |
d78d4a8a | 2527 | brq->data.blksz); |
ee8a43a5 PF |
2528 | if (!ret) |
2529 | goto start_new_req; | |
d78d4a8a | 2530 | break; |
a8ad82cc SRT |
2531 | case MMC_BLK_NOMEDIUM: |
2532 | goto cmd_abort; | |
2220eedf KD |
2533 | default: |
2534 | pr_err("%s: Unhandled return value (%d)", | |
2535 | req->rq_disk->disk_name, status); | |
2536 | goto cmd_abort; | |
4c2b8f26 RKAL |
2537 | } |
2538 | ||
ee8a43a5 | 2539 | if (ret) { |
ce39f9d1 SJ |
2540 | if (mmc_packed_cmd(mq_rq->cmd_type)) { |
2541 | if (!mq_rq->packed->retries) | |
2542 | goto cmd_abort; | |
2543 | mmc_blk_packed_hdr_wrq_prep(mq_rq, card, mq); | |
2544 | mmc_start_req(card->host, | |
2545 | &mq_rq->mmc_active, NULL); | |
2546 | } else { | |
2547 | ||
2548 | /* | |
2549 | * In case of a incomplete request | |
2550 | * prepare it again and resend. | |
2551 | */ | |
2552 | mmc_blk_rw_rq_prep(mq_rq, card, | |
2553 | disable_multi, mq); | |
2554 | mmc_start_req(card->host, | |
2555 | &mq_rq->mmc_active, NULL); | |
2556 | } | |
ee8a43a5 | 2557 | } |
1da177e4 LT |
2558 | } while (ret); |
2559 | ||
1da177e4 LT |
2560 | return 1; |
2561 | ||
a01f3ccf | 2562 | cmd_abort: |
ce39f9d1 SJ |
2563 | if (mmc_packed_cmd(mq_rq->cmd_type)) { |
2564 | mmc_blk_abort_packed_req(mq_rq); | |
2565 | } else { | |
2566 | if (mmc_card_removed(card)) | |
2567 | req->cmd_flags |= REQ_QUIET; | |
2568 | while (ret) | |
2569 | ret = blk_end_request(req, -EIO, | |
2570 | blk_rq_cur_bytes(req)); | |
2571 | } | |
1da177e4 | 2572 | |
ee8a43a5 PF |
2573 | start_new_req: |
2574 | if (rqc) { | |
7a81902f SJ |
2575 | if (mmc_card_removed(card)) { |
2576 | rqc->cmd_flags |= REQ_QUIET; | |
2577 | blk_end_request_all(rqc, -EIO); | |
2578 | } else { | |
ce39f9d1 SJ |
2579 | /* |
2580 | * If current request is packed, it needs to put back. | |
2581 | */ | |
2582 | if (mmc_packed_cmd(mq->mqrq_cur->cmd_type)) | |
2583 | mmc_blk_revert_packed_req(mq, mq->mqrq_cur); | |
2584 | ||
7a81902f SJ |
2585 | mmc_blk_rw_rq_prep(mq->mqrq_cur, card, 0, mq); |
2586 | mmc_start_req(card->host, | |
2587 | &mq->mqrq_cur->mmc_active, NULL); | |
2588 | } | |
ee8a43a5 PF |
2589 | } |
2590 | ||
1da177e4 LT |
2591 | return 0; |
2592 | } | |
2593 | ||
bd788c96 AH |
2594 | static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) |
2595 | { | |
1a258db6 AW |
2596 | int ret; |
2597 | struct mmc_blk_data *md = mq->data; | |
2598 | struct mmc_card *card = md->queue.card; | |
2220eedf KD |
2599 | struct mmc_host *host = card->host; |
2600 | unsigned long flags; | |
1e06335d | 2601 | unsigned int cmd_flags = req ? req->cmd_flags : 0; |
1a258db6 | 2602 | |
6fa3eb70 S |
2603 | #ifdef CONFIG_MMC_BLOCK_DEFERRED_RESUME |
2604 | if (mmc_bus_needs_resume(card->host)) | |
2605 | mmc_resume_bus(card->host); | |
2606 | #endif | |
2607 | ||
ee8a43a5 PF |
2608 | if (req && !mq->mqrq_prev->req) |
2609 | /* claim host only for the first request */ | |
2610 | mmc_claim_host(card->host); | |
2611 | ||
371a689f AW |
2612 | ret = mmc_blk_part_switch(card, md); |
2613 | if (ret) { | |
0d7d85ca | 2614 | if (req) { |
ecf8b5d0 | 2615 | blk_end_request_all(req, -EIO); |
0d7d85ca | 2616 | } |
371a689f AW |
2617 | ret = 0; |
2618 | goto out; | |
2619 | } | |
1a258db6 | 2620 | |
2220eedf | 2621 | mq->flags &= ~MMC_QUEUE_NEW_REQUEST; |
1e06335d | 2622 | if (cmd_flags & REQ_DISCARD) { |
ee8a43a5 PF |
2623 | /* complete ongoing async transfer before issuing discard */ |
2624 | if (card->host->areq) | |
2625 | mmc_blk_issue_rw_rq(mq, NULL); | |
3550ccdb IC |
2626 | if (req->cmd_flags & REQ_SECURE && |
2627 | !(card->quirks & MMC_QUIRK_SEC_ERASE_TRIM_BROKEN)) | |
1a258db6 | 2628 | ret = mmc_blk_issue_secdiscard_rq(mq, req); |
49804548 | 2629 | else |
1a258db6 | 2630 | ret = mmc_blk_issue_discard_rq(mq, req); |
1e06335d | 2631 | } else if (cmd_flags & REQ_FLUSH) { |
393f9a08 JC |
2632 | /* complete ongoing async transfer before issuing flush */ |
2633 | if (card->host->areq) | |
2634 | mmc_blk_issue_rw_rq(mq, NULL); | |
1a258db6 | 2635 | ret = mmc_blk_issue_flush(mq, req); |
49804548 | 2636 | } else { |
2220eedf KD |
2637 | if (!req && host->areq) { |
2638 | spin_lock_irqsave(&host->context_info.lock, flags); | |
2639 | host->context_info.is_waiting_last_req = true; | |
2640 | spin_unlock_irqrestore(&host->context_info.lock, flags); | |
2641 | } | |
1a258db6 | 2642 | ret = mmc_blk_issue_rw_rq(mq, req); |
49804548 | 2643 | } |
1a258db6 | 2644 | |
371a689f | 2645 | out: |
ef3a69c7 | 2646 | if ((!req && !(mq->flags & MMC_QUEUE_NEW_REQUEST)) || |
1e06335d | 2647 | (cmd_flags & MMC_REQ_SPECIAL_MASK)) |
ef3a69c7 SJ |
2648 | /* |
2649 | * Release host when there are no more requests | |
2650 | * and after special request(discard, flush) is done. | |
2651 | * In case sepecial request, there is no reentry to | |
2652 | * the 'mmc_blk_issue_rq' with 'mqrq_prev->req'. | |
2653 | */ | |
ee8a43a5 | 2654 | mmc_release_host(card->host); |
1a258db6 | 2655 | return ret; |
bd788c96 | 2656 | } |
1da177e4 | 2657 | |
a6f6c96b RK |
2658 | static inline int mmc_blk_readonly(struct mmc_card *card) |
2659 | { | |
2660 | return mmc_card_readonly(card) || | |
2661 | !(card->csd.cmdclass & CCC_BLOCK_WRITE); | |
2662 | } | |
2663 | ||
6fa3eb70 S |
2664 | //#if defined(FEATURE_STORAGE_PID_LOGGER) |
2665 | //extern unsigned long get_memory_size(void); | |
2666 | //#endif | |
2667 | #ifdef CONFIG_MTK_EXTMEM | |
2668 | extern void* extmem_malloc_page_align(size_t bytes); | |
2669 | #endif | |
371a689f AW |
2670 | static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card, |
2671 | struct device *parent, | |
2672 | sector_t size, | |
2673 | bool default_ro, | |
add710ea JR |
2674 | const char *subname, |
2675 | int area_type) | |
1da177e4 LT |
2676 | { |
2677 | struct mmc_blk_data *md; | |
2678 | int devidx, ret; | |
2679 | ||
5e71b7a6 OJ |
2680 | devidx = find_first_zero_bit(dev_use, max_devices); |
2681 | if (devidx >= max_devices) | |
1da177e4 LT |
2682 | return ERR_PTR(-ENOSPC); |
2683 | __set_bit(devidx, dev_use); | |
2684 | ||
dd00cc48 | 2685 | md = kzalloc(sizeof(struct mmc_blk_data), GFP_KERNEL); |
a6f6c96b RK |
2686 | if (!md) { |
2687 | ret = -ENOMEM; | |
2688 | goto out; | |
2689 | } | |
1da177e4 | 2690 | |
f06c9153 AW |
2691 | /* |
2692 | * !subname implies we are creating main mmc_blk_data that will be | |
2693 | * associated with mmc_card with mmc_set_drvdata. Due to device | |
2694 | * partitions, devidx will not coincide with a per-physical card | |
2695 | * index anymore so we keep track of a name index. | |
2696 | */ | |
2697 | if (!subname) { | |
2698 | md->name_idx = find_first_zero_bit(name_use, max_devices); | |
2699 | __set_bit(md->name_idx, name_use); | |
add710ea | 2700 | } else |
f06c9153 AW |
2701 | md->name_idx = ((struct mmc_blk_data *) |
2702 | dev_to_disk(parent)->private_data)->name_idx; | |
2703 | ||
add710ea JR |
2704 | md->area_type = area_type; |
2705 | ||
a6f6c96b RK |
2706 | /* |
2707 | * Set the read-only status based on the supported commands | |
2708 | * and the write protect switch. | |
2709 | */ | |
2710 | md->read_only = mmc_blk_readonly(card); | |
1da177e4 | 2711 | |
5e71b7a6 | 2712 | md->disk = alloc_disk(perdev_minors); |
a6f6c96b RK |
2713 | if (md->disk == NULL) { |
2714 | ret = -ENOMEM; | |
2715 | goto err_kfree; | |
2716 | } | |
1da177e4 | 2717 | |
a6f6c96b | 2718 | spin_lock_init(&md->lock); |
371a689f | 2719 | INIT_LIST_HEAD(&md->part); |
a6f6c96b | 2720 | md->usage = 1; |
1da177e4 | 2721 | |
d09408ad | 2722 | ret = mmc_init_queue(&md->queue, card, &md->lock, subname); |
a6f6c96b RK |
2723 | if (ret) |
2724 | goto err_putdisk; | |
6fa3eb70 S |
2725 | #if defined(FEATURE_STORAGE_PID_LOGGER) |
2726 | if( !page_logger){ | |
2727 | //num_page_logger = sizeof(struct page_pid_logger); | |
2728 | //page_logger = vmalloc(num_physpages*sizeof(struct page_pid_logger)); | |
2729 | // solution: use get_memory_size to obtain the size from start pfn to max pfn | |
2730 | ||
2731 | //unsigned long count = get_memory_size() >> PAGE_SHIFT; | |
2732 | unsigned long count = get_max_DRAM_size() >> PAGE_SHIFT; | |
2733 | #ifdef CONFIG_MTK_EXTMEM | |
2734 | page_logger = extmem_malloc_page_align(count * sizeof(struct page_pid_logger)); | |
2735 | #else | |
2736 | page_logger = vmalloc(count * sizeof(struct page_pid_logger)); | |
2737 | #endif | |
2738 | if( page_logger) { | |
2739 | memset( page_logger, -1, count*sizeof( struct page_pid_logger)); | |
2740 | } | |
2741 | spin_lock_init(&g_locker); | |
2742 | } | |
2743 | #endif | |
2744 | #if defined(FEATURE_STORAGE_META_LOG) | |
2745 | check_perdev_minors = perdev_minors; | |
2746 | #endif | |
1da177e4 | 2747 | |
a6f6c96b RK |
2748 | md->queue.issue_fn = mmc_blk_issue_rq; |
2749 | md->queue.data = md; | |
d2b18394 | 2750 | |
fe6b4c88 | 2751 | md->disk->major = MMC_BLOCK_MAJOR; |
5e71b7a6 | 2752 | md->disk->first_minor = devidx * perdev_minors; |
a6f6c96b RK |
2753 | md->disk->fops = &mmc_bdops; |
2754 | md->disk->private_data = md; | |
2755 | md->disk->queue = md->queue.queue; | |
371a689f AW |
2756 | md->disk->driverfs_dev = parent; |
2757 | set_disk_ro(md->disk, md->read_only || default_ro); | |
6fa3eb70 | 2758 | md->disk->flags = GENHD_FL_EXT_DEVT; |
53d8f974 LP |
2759 | if (area_type & MMC_BLK_DATA_AREA_RPMB) |
2760 | md->disk->flags |= GENHD_FL_NO_PART_SCAN; | |
a6f6c96b RK |
2761 | |
2762 | /* | |
2763 | * As discussed on lkml, GENHD_FL_REMOVABLE should: | |
2764 | * | |
2765 | * - be set for removable media with permanent block devices | |
2766 | * - be unset for removable block devices with permanent media | |
2767 | * | |
2768 | * Since MMC block devices clearly fall under the second | |
2769 | * case, we do not set GENHD_FL_REMOVABLE. Userspace | |
2770 | * should use the block device creation/destruction hotplug | |
2771 | * messages to tell when the card is present. | |
2772 | */ | |
2773 | ||
f06c9153 AW |
2774 | snprintf(md->disk->disk_name, sizeof(md->disk->disk_name), |
2775 | "mmcblk%d%s", md->name_idx, subname ? subname : ""); | |
a6f6c96b | 2776 | |
a5075eb9 SD |
2777 | if (mmc_card_mmc(card)) |
2778 | blk_queue_logical_block_size(md->queue.queue, | |
2779 | card->ext_csd.data_sector_size); | |
2780 | else | |
2781 | blk_queue_logical_block_size(md->queue.queue, 512); | |
2782 | ||
371a689f | 2783 | set_capacity(md->disk, size); |
d0c97cfb | 2784 | |
f0d89972 AW |
2785 | if (mmc_host_cmd23(card->host)) { |
2786 | if (mmc_card_mmc(card) || | |
2787 | (mmc_card_sd(card) && | |
2788 | card->scr.cmds & SD_SCR_CMD23_SUPPORT)) | |
2789 | md->flags |= MMC_BLK_CMD23; | |
2790 | } | |
d0c97cfb AW |
2791 | |
2792 | if (mmc_card_mmc(card) && | |
2793 | md->flags & MMC_BLK_CMD23 && | |
2794 | ((card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN) || | |
2795 | card->ext_csd.rel_sectors)) { | |
2796 | md->flags |= MMC_BLK_REL_WR; | |
2797 | blk_queue_flush(md->queue.queue, REQ_FLUSH | REQ_FUA); | |
2798 | } | |
2799 | ||
ce39f9d1 SJ |
2800 | if (mmc_card_mmc(card) && |
2801 | (area_type == MMC_BLK_DATA_AREA_MAIN) && | |
2802 | (md->flags & MMC_BLK_CMD23) && | |
2803 | card->ext_csd.packed_event_en) { | |
2804 | if (!mmc_packed_init(&md->queue, card)) | |
2805 | md->flags |= MMC_BLK_PACKED_CMD; | |
2806 | } | |
2807 | ||
371a689f AW |
2808 | return md; |
2809 | ||
2810 | err_putdisk: | |
2811 | put_disk(md->disk); | |
2812 | err_kfree: | |
2813 | kfree(md); | |
2814 | out: | |
2815 | return ERR_PTR(ret); | |
2816 | } | |
2817 | ||
2818 | static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card) | |
2819 | { | |
2820 | sector_t size; | |
6fa3eb70 S |
2821 | #ifdef CONFIG_MTK_EMMC_SUPPORT |
2822 | unsigned int l_reserve; | |
2823 | struct storage_info s_info = {0}; | |
2824 | #endif | |
371a689f | 2825 | struct mmc_blk_data *md; |
a6f6c96b | 2826 | |
85a18ad9 PO |
2827 | if (!mmc_card_sd(card) && mmc_card_blockaddr(card)) { |
2828 | /* | |
2829 | * The EXT_CSD sector count is in number or 512 byte | |
2830 | * sectors. | |
2831 | */ | |
371a689f | 2832 | size = card->ext_csd.sectors; |
85a18ad9 PO |
2833 | } else { |
2834 | /* | |
2835 | * The CSD capacity field is in units of read_blkbits. | |
2836 | * set_capacity takes units of 512 bytes. | |
2837 | */ | |
371a689f | 2838 | size = card->csd.capacity << (card->csd.read_blkbits - 9); |
85a18ad9 | 2839 | } |
371a689f | 2840 | |
6fa3eb70 S |
2841 | if(!mmc_card_sd(card)){ |
2842 | #ifdef CONFIG_MTK_EMMC_SUPPORT | |
2843 | msdc_get_info(EMMC_CARD_BOOT, EMMC_RESERVE, &s_info); | |
2844 | l_reserve = s_info.emmc_reserve; | |
2845 | printk("l_reserve = 0x%x\n", l_reserve); | |
2846 | size -= l_reserve; /*reserved for 64MB (emmc otp + emmc combo offset + reserved)*/ | |
2847 | #endif | |
2848 | } | |
add710ea JR |
2849 | md = mmc_blk_alloc_req(card, &card->dev, size, false, NULL, |
2850 | MMC_BLK_DATA_AREA_MAIN); | |
1da177e4 | 2851 | return md; |
371a689f | 2852 | } |
a6f6c96b | 2853 | |
371a689f AW |
2854 | static int mmc_blk_alloc_part(struct mmc_card *card, |
2855 | struct mmc_blk_data *md, | |
2856 | unsigned int part_type, | |
2857 | sector_t size, | |
2858 | bool default_ro, | |
add710ea JR |
2859 | const char *subname, |
2860 | int area_type) | |
371a689f AW |
2861 | { |
2862 | char cap_str[10]; | |
2863 | struct mmc_blk_data *part_md; | |
2864 | ||
2865 | part_md = mmc_blk_alloc_req(card, disk_to_dev(md->disk), size, default_ro, | |
add710ea | 2866 | subname, area_type); |
371a689f AW |
2867 | if (IS_ERR(part_md)) |
2868 | return PTR_ERR(part_md); | |
2869 | part_md->part_type = part_type; | |
2870 | list_add(&part_md->part, &md->part); | |
2871 | ||
2872 | string_get_size((u64)get_capacity(part_md->disk) << 9, STRING_UNITS_2, | |
2873 | cap_str, sizeof(cap_str)); | |
a3c76eb9 | 2874 | pr_info("%s: %s %s partition %u %s\n", |
371a689f AW |
2875 | part_md->disk->disk_name, mmc_card_id(card), |
2876 | mmc_card_name(card), part_md->part_type, cap_str); | |
2877 | return 0; | |
2878 | } | |
2879 | ||
e0c368d5 NJ |
2880 | /* MMC Physical partitions consist of two boot partitions and |
2881 | * up to four general purpose partitions. | |
2882 | * For each partition enabled in EXT_CSD a block device will be allocatedi | |
2883 | * to provide access to the partition. | |
2884 | */ | |
2885 | ||
371a689f AW |
2886 | static int mmc_blk_alloc_parts(struct mmc_card *card, struct mmc_blk_data *md) |
2887 | { | |
e0c368d5 | 2888 | int idx, ret = 0; |
371a689f AW |
2889 | |
2890 | if (!mmc_card_mmc(card)) | |
2891 | return 0; | |
2892 | ||
e0c368d5 NJ |
2893 | for (idx = 0; idx < card->nr_parts; idx++) { |
2894 | if (card->part[idx].size) { | |
2895 | ret = mmc_blk_alloc_part(card, md, | |
2896 | card->part[idx].part_cfg, | |
2897 | card->part[idx].size >> 9, | |
2898 | card->part[idx].force_ro, | |
add710ea JR |
2899 | card->part[idx].name, |
2900 | card->part[idx].area_type); | |
e0c368d5 NJ |
2901 | if (ret) |
2902 | return ret; | |
2903 | } | |
371a689f AW |
2904 | } |
2905 | ||
2906 | return ret; | |
1da177e4 LT |
2907 | } |
2908 | ||
371a689f AW |
2909 | static void mmc_blk_remove_req(struct mmc_blk_data *md) |
2910 | { | |
add710ea JR |
2911 | struct mmc_card *card; |
2912 | ||
371a689f | 2913 | if (md) { |
add710ea | 2914 | card = md->queue.card; |
371a689f AW |
2915 | if (md->disk->flags & GENHD_FL_UP) { |
2916 | device_remove_file(disk_to_dev(md->disk), &md->force_ro); | |
add710ea JR |
2917 | if ((md->area_type & MMC_BLK_DATA_AREA_BOOT) && |
2918 | card->ext_csd.boot_ro_lockable) | |
2919 | device_remove_file(disk_to_dev(md->disk), | |
2920 | &md->power_ro_lock); | |
371a689f AW |
2921 | |
2922 | /* Stop new requests from getting into the queue */ | |
2923 | del_gendisk(md->disk); | |
2924 | } | |
2925 | ||
2926 | /* Then flush out any already in there */ | |
2927 | mmc_cleanup_queue(&md->queue); | |
ce39f9d1 SJ |
2928 | if (md->flags & MMC_BLK_PACKED_CMD) |
2929 | mmc_packed_clean(&md->queue); | |
371a689f AW |
2930 | mmc_blk_put(md); |
2931 | } | |
2932 | } | |
2933 | ||
2934 | static void mmc_blk_remove_parts(struct mmc_card *card, | |
2935 | struct mmc_blk_data *md) | |
2936 | { | |
2937 | struct list_head *pos, *q; | |
2938 | struct mmc_blk_data *part_md; | |
2939 | ||
f06c9153 | 2940 | __clear_bit(md->name_idx, name_use); |
371a689f AW |
2941 | list_for_each_safe(pos, q, &md->part) { |
2942 | part_md = list_entry(pos, struct mmc_blk_data, part); | |
2943 | list_del(pos); | |
2944 | mmc_blk_remove_req(part_md); | |
2945 | } | |
2946 | } | |
2947 | ||
2948 | static int mmc_add_disk(struct mmc_blk_data *md) | |
2949 | { | |
2950 | int ret; | |
add710ea | 2951 | struct mmc_card *card = md->queue.card; |
371a689f AW |
2952 | |
2953 | add_disk(md->disk); | |
2954 | md->force_ro.show = force_ro_show; | |
2955 | md->force_ro.store = force_ro_store; | |
641c3187 | 2956 | sysfs_attr_init(&md->force_ro.attr); |
371a689f AW |
2957 | md->force_ro.attr.name = "force_ro"; |
2958 | md->force_ro.attr.mode = S_IRUGO | S_IWUSR; | |
2959 | ret = device_create_file(disk_to_dev(md->disk), &md->force_ro); | |
2960 | if (ret) | |
add710ea JR |
2961 | goto force_ro_fail; |
2962 | ||
2963 | if ((md->area_type & MMC_BLK_DATA_AREA_BOOT) && | |
2964 | card->ext_csd.boot_ro_lockable) { | |
88187398 | 2965 | umode_t mode; |
add710ea JR |
2966 | |
2967 | if (card->ext_csd.boot_ro_lock & EXT_CSD_BOOT_WP_B_PWR_WP_DIS) | |
2968 | mode = S_IRUGO; | |
2969 | else | |
2970 | mode = S_IRUGO | S_IWUSR; | |
2971 | ||
2972 | md->power_ro_lock.show = power_ro_lock_show; | |
2973 | md->power_ro_lock.store = power_ro_lock_store; | |
00d9ac08 | 2974 | sysfs_attr_init(&md->power_ro_lock.attr); |
add710ea JR |
2975 | md->power_ro_lock.attr.mode = mode; |
2976 | md->power_ro_lock.attr.name = | |
2977 | "ro_lock_until_next_power_on"; | |
2978 | ret = device_create_file(disk_to_dev(md->disk), | |
2979 | &md->power_ro_lock); | |
2980 | if (ret) | |
2981 | goto power_ro_lock_fail; | |
2982 | } | |
2983 | return ret; | |
2984 | ||
2985 | power_ro_lock_fail: | |
2986 | device_remove_file(disk_to_dev(md->disk), &md->force_ro); | |
2987 | force_ro_fail: | |
2988 | del_gendisk(md->disk); | |
371a689f AW |
2989 | |
2990 | return ret; | |
2991 | } | |
2992 | ||
c59d4473 CB |
2993 | #define CID_MANFID_SANDISK 0x2 |
2994 | #define CID_MANFID_TOSHIBA 0x11 | |
2995 | #define CID_MANFID_MICRON 0x13 | |
3550ccdb | 2996 | #define CID_MANFID_SAMSUNG 0x15 |
6fa3eb70 S |
2997 | #define CID_MANFID_SANDISK_NEW 0x45 |
2998 | #define CID_MANFID_HYNIX 0x90 | |
2999 | #define CID_MANFID_KSI 0x70 | |
c59d4473 | 3000 | |
6f60c222 AW |
3001 | static const struct mmc_fixup blk_fixups[] = |
3002 | { | |
c59d4473 CB |
3003 | MMC_FIXUP("SEM02G", CID_MANFID_SANDISK, 0x100, add_quirk, |
3004 | MMC_QUIRK_INAND_CMD38), | |
3005 | MMC_FIXUP("SEM04G", CID_MANFID_SANDISK, 0x100, add_quirk, | |
3006 | MMC_QUIRK_INAND_CMD38), | |
3007 | MMC_FIXUP("SEM08G", CID_MANFID_SANDISK, 0x100, add_quirk, | |
3008 | MMC_QUIRK_INAND_CMD38), | |
3009 | MMC_FIXUP("SEM16G", CID_MANFID_SANDISK, 0x100, add_quirk, | |
3010 | MMC_QUIRK_INAND_CMD38), | |
3011 | MMC_FIXUP("SEM32G", CID_MANFID_SANDISK, 0x100, add_quirk, | |
3012 | MMC_QUIRK_INAND_CMD38), | |
6fa3eb70 S |
3013 | MMC_FIXUP(CID_NAME_ANY, CID_MANFID_SANDISK_NEW, CID_OEMID_ANY, add_quirk, |
3014 | MMC_QUIRK_PON), | |
d0c97cfb AW |
3015 | /* |
3016 | * Some MMC cards experience performance degradation with CMD23 | |
3017 | * instead of CMD12-bounded multiblock transfers. For now we'll | |
3018 | * black list what's bad... | |
3019 | * - Certain Toshiba cards. | |
3020 | * | |
3021 | * N.B. This doesn't affect SD cards. | |
3022 | */ | |
c59d4473 | 3023 | MMC_FIXUP("MMC08G", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc, |
d0c97cfb | 3024 | MMC_QUIRK_BLK_NO_CMD23), |
c59d4473 | 3025 | MMC_FIXUP("MMC16G", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc, |
d0c97cfb | 3026 | MMC_QUIRK_BLK_NO_CMD23), |
c59d4473 | 3027 | MMC_FIXUP("MMC32G", CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc, |
d0c97cfb | 3028 | MMC_QUIRK_BLK_NO_CMD23), |
6de5fc9c SNX |
3029 | |
3030 | /* | |
3031 | * Some Micron MMC cards needs longer data read timeout than | |
3032 | * indicated in CSD. | |
3033 | */ | |
c59d4473 | 3034 | MMC_FIXUP(CID_NAME_ANY, CID_MANFID_MICRON, 0x200, add_quirk_mmc, |
6de5fc9c SNX |
3035 | MMC_QUIRK_LONG_READ_TIME), |
3036 | ||
3550ccdb IC |
3037 | /* |
3038 | * On these Samsung MoviNAND parts, performing secure erase or | |
3039 | * secure trim can result in unrecoverable corruption due to a | |
3040 | * firmware bug. | |
3041 | */ | |
3042 | MMC_FIXUP("M8G2FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, | |
3043 | MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), | |
3044 | MMC_FIXUP("MAG4FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, | |
3045 | MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), | |
3046 | MMC_FIXUP("MBG8FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, | |
3047 | MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), | |
3048 | MMC_FIXUP("MCGAFA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, | |
3049 | MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), | |
3050 | MMC_FIXUP("VAL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, | |
3051 | MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), | |
3052 | MMC_FIXUP("VYL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, | |
3053 | MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), | |
3054 | MMC_FIXUP("KYL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, | |
3055 | MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), | |
3056 | MMC_FIXUP("VZL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, | |
3057 | MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), | |
6fa3eb70 S |
3058 | #ifdef CONFIG_MTK_EMMC_CACHE |
3059 | /* | |
3060 | * Some MMC cards cache feature, cannot flush the previous cache data by force programming or reliable write | |
3061 | * which cannot gurrantee the strong order betwee meta data and file data. | |
3062 | */ | |
3063 | ||
3064 | /* | |
3065 | * Toshiba eMMC after enable cache feature, write performance drop, because flush operation waste much time | |
3066 | */ | |
3067 | MMC_FIXUP(CID_NAME_ANY, CID_MANFID_TOSHIBA, CID_OEMID_ANY, add_quirk_mmc, | |
3068 | MMC_QUIRK_DISABLE_CACHE), | |
3069 | #endif | |
3070 | ||
3071 | /* Hynix 4.41 trim will lead boot up failed. */ | |
3072 | MMC_FIXUP(CID_NAME_ANY, CID_MANFID_HYNIX, CID_OEMID_ANY, add_quirk_mmc, | |
3073 | MMC_QUIRK_TRIM_UNSTABLE), | |
3074 | ||
3075 | /* KSI PRV=0x3 trim will lead write performance drop. */ | |
3076 | MMC_FIXUP(CID_NAME_ANY, CID_MANFID_KSI, CID_OEMID_ANY, add_quirk_mmc_ksi_v03_skip_trim, | |
3077 | MMC_QUIRK_KSI_V03_SKIP_TRIM), | |
3550ccdb | 3078 | |
6f60c222 AW |
3079 | END_FIXUP |
3080 | }; | |
3081 | ||
6fa3eb70 S |
3082 | #if defined(CONFIG_MTK_EMMC_SUPPORT) && !defined(CONFIG_MTK_GPT_SCHEME_SUPPORT) |
3083 | extern void emmc_create_sys_symlink (struct mmc_card *card); | |
3084 | #endif | |
1da177e4 LT |
3085 | static int mmc_blk_probe(struct mmc_card *card) |
3086 | { | |
371a689f | 3087 | struct mmc_blk_data *md, *part_md; |
a7bbb573 PO |
3088 | char cap_str[10]; |
3089 | ||
912490db PO |
3090 | /* |
3091 | * Check that the card supports the command class(es) we need. | |
3092 | */ | |
3093 | if (!(card->csd.cmdclass & CCC_BLOCK_READ)) | |
1da177e4 LT |
3094 | return -ENODEV; |
3095 | ||
1da177e4 LT |
3096 | md = mmc_blk_alloc(card); |
3097 | if (IS_ERR(md)) | |
3098 | return PTR_ERR(md); | |
3099 | ||
444122fd | 3100 | string_get_size((u64)get_capacity(md->disk) << 9, STRING_UNITS_2, |
a7bbb573 | 3101 | cap_str, sizeof(cap_str)); |
a3c76eb9 | 3102 | pr_info("%s: %s %s %s %s\n", |
1da177e4 | 3103 | md->disk->disk_name, mmc_card_id(card), mmc_card_name(card), |
a7bbb573 | 3104 | cap_str, md->read_only ? "(ro)" : ""); |
1da177e4 | 3105 | |
371a689f AW |
3106 | if (mmc_blk_alloc_parts(card, md)) |
3107 | goto out; | |
3108 | ||
1da177e4 | 3109 | mmc_set_drvdata(card, md); |
6f60c222 AW |
3110 | mmc_fixup_device(card, blk_fixups); |
3111 | ||
6fa3eb70 S |
3112 | printk("[%s]: %s by manufacturer settings, quirks=0x%x\n", __func__, md->disk->disk_name, card->quirks); |
3113 | ||
3114 | #ifdef CONFIG_MMC_BLOCK_DEFERRED_RESUME | |
3115 | mmc_set_bus_resume_policy(card->host, 1); | |
3116 | #endif | |
371a689f AW |
3117 | if (mmc_add_disk(md)) |
3118 | goto out; | |
3119 | ||
3120 | list_for_each_entry(part_md, &md->part, part) { | |
3121 | if (mmc_add_disk(part_md)) | |
3122 | goto out; | |
3123 | } | |
6fa3eb70 S |
3124 | #if defined(CONFIG_MTK_EMMC_SUPPORT) && !defined(CONFIG_MTK_GPT_SCHEME_SUPPORT) |
3125 | emmc_create_sys_symlink(card); | |
3126 | #endif | |
1da177e4 LT |
3127 | return 0; |
3128 | ||
3129 | out: | |
371a689f AW |
3130 | mmc_blk_remove_parts(card, md); |
3131 | mmc_blk_remove_req(md); | |
5865f287 | 3132 | return 0; |
1da177e4 LT |
3133 | } |
3134 | ||
3135 | static void mmc_blk_remove(struct mmc_card *card) | |
3136 | { | |
3137 | struct mmc_blk_data *md = mmc_get_drvdata(card); | |
3138 | ||
371a689f | 3139 | mmc_blk_remove_parts(card, md); |
ddd6fa7e AH |
3140 | mmc_claim_host(card->host); |
3141 | mmc_blk_part_switch(card, md); | |
3142 | mmc_release_host(card->host); | |
371a689f | 3143 | mmc_blk_remove_req(md); |
1da177e4 | 3144 | mmc_set_drvdata(card, NULL); |
6fa3eb70 S |
3145 | #ifdef CONFIG_MMC_BLOCK_DEFERRED_RESUME |
3146 | mmc_set_bus_resume_policy(card->host, 0); | |
3147 | #endif | |
1da177e4 LT |
3148 | } |
3149 | ||
3150 | #ifdef CONFIG_PM | |
32d317c6 | 3151 | static int mmc_blk_suspend(struct mmc_card *card) |
1da177e4 | 3152 | { |
371a689f | 3153 | struct mmc_blk_data *part_md; |
1da177e4 LT |
3154 | struct mmc_blk_data *md = mmc_get_drvdata(card); |
3155 | ||
3156 | if (md) { | |
3157 | mmc_queue_suspend(&md->queue); | |
371a689f AW |
3158 | list_for_each_entry(part_md, &md->part, part) { |
3159 | mmc_queue_suspend(&part_md->queue); | |
3160 | } | |
1da177e4 LT |
3161 | } |
3162 | return 0; | |
3163 | } | |
3164 | ||
3165 | static int mmc_blk_resume(struct mmc_card *card) | |
3166 | { | |
371a689f | 3167 | struct mmc_blk_data *part_md; |
1da177e4 LT |
3168 | struct mmc_blk_data *md = mmc_get_drvdata(card); |
3169 | ||
3170 | if (md) { | |
371a689f AW |
3171 | /* |
3172 | * Resume involves the card going into idle state, | |
3173 | * so current partition is always the main one. | |
3174 | */ | |
3175 | md->part_curr = md->part_type; | |
1da177e4 | 3176 | mmc_queue_resume(&md->queue); |
371a689f AW |
3177 | list_for_each_entry(part_md, &md->part, part) { |
3178 | mmc_queue_resume(&part_md->queue); | |
3179 | } | |
1da177e4 LT |
3180 | } |
3181 | return 0; | |
3182 | } | |
3183 | #else | |
3184 | #define mmc_blk_suspend NULL | |
3185 | #define mmc_blk_resume NULL | |
3186 | #endif | |
3187 | ||
3188 | static struct mmc_driver mmc_driver = { | |
3189 | .drv = { | |
3190 | .name = "mmcblk", | |
3191 | }, | |
3192 | .probe = mmc_blk_probe, | |
3193 | .remove = mmc_blk_remove, | |
3194 | .suspend = mmc_blk_suspend, | |
3195 | .resume = mmc_blk_resume, | |
3196 | }; | |
3197 | ||
3198 | static int __init mmc_blk_init(void) | |
3199 | { | |
9d4e98e9 | 3200 | int res; |
1da177e4 | 3201 | |
5e71b7a6 OJ |
3202 | if (perdev_minors != CONFIG_MMC_BLOCK_MINORS) |
3203 | pr_info("mmcblk: using %d minors per device\n", perdev_minors); | |
3204 | ||
3205 | max_devices = 256 / perdev_minors; | |
3206 | ||
fe6b4c88 PO |
3207 | res = register_blkdev(MMC_BLOCK_MAJOR, "mmc"); |
3208 | if (res) | |
1da177e4 | 3209 | goto out; |
1da177e4 | 3210 | |
9d4e98e9 AM |
3211 | res = mmc_register_driver(&mmc_driver); |
3212 | if (res) | |
3213 | goto out2; | |
1da177e4 | 3214 | |
9d4e98e9 AM |
3215 | return 0; |
3216 | out2: | |
3217 | unregister_blkdev(MMC_BLOCK_MAJOR, "mmc"); | |
1da177e4 LT |
3218 | out: |
3219 | return res; | |
3220 | } | |
3221 | ||
3222 | static void __exit mmc_blk_exit(void) | |
3223 | { | |
3224 | mmc_unregister_driver(&mmc_driver); | |
fe6b4c88 | 3225 | unregister_blkdev(MMC_BLOCK_MAJOR, "mmc"); |
1da177e4 LT |
3226 | } |
3227 | ||
3228 | module_init(mmc_blk_init); | |
3229 | module_exit(mmc_blk_exit); | |
3230 | ||
3231 | MODULE_LICENSE("GPL"); | |
3232 | MODULE_DESCRIPTION("Multimedia Card (MMC) block device driver"); | |
3233 |