Commit | Line | Data |
---|---|---|
da7fbe58 | 1 | /* |
70f10482 | 2 | * linux/drivers/mmc/core/mmc_ops.h |
da7fbe58 PO |
3 | * |
4 | * Copyright 2006-2007 Pierre Ossman | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or (at | |
9 | * your option) any later version. | |
10 | */ | |
11 | ||
5a0e3ad6 | 12 | #include <linux/slab.h> |
3ef77af1 | 13 | #include <linux/export.h> |
da7fbe58 | 14 | #include <linux/types.h> |
da7fbe58 PO |
15 | #include <linux/scatterlist.h> |
16 | ||
17 | #include <linux/mmc/host.h> | |
18 | #include <linux/mmc/card.h> | |
19 | #include <linux/mmc/mmc.h> | |
20 | ||
21 | #include "core.h" | |
c6dbab9c | 22 | #include "host.h" |
da7fbe58 PO |
23 | #include "mmc_ops.h" |
24 | ||
8fee476b TR |
25 | #define MMC_OPS_TIMEOUT_MS (10 * 60 * 1000) /* 10 minute timeout */ |
26 | ||
04cdbbfa UH |
27 | static const u8 tuning_blk_pattern_4bit[] = { |
28 | 0xff, 0x0f, 0xff, 0x00, 0xff, 0xcc, 0xc3, 0xcc, | |
29 | 0xc3, 0x3c, 0xcc, 0xff, 0xfe, 0xff, 0xfe, 0xef, | |
30 | 0xff, 0xdf, 0xff, 0xdd, 0xff, 0xfb, 0xff, 0xfb, | |
31 | 0xbf, 0xff, 0x7f, 0xff, 0x77, 0xf7, 0xbd, 0xef, | |
32 | 0xff, 0xf0, 0xff, 0xf0, 0x0f, 0xfc, 0xcc, 0x3c, | |
33 | 0xcc, 0x33, 0xcc, 0xcf, 0xff, 0xef, 0xff, 0xee, | |
34 | 0xff, 0xfd, 0xff, 0xfd, 0xdf, 0xff, 0xbf, 0xff, | |
35 | 0xbb, 0xff, 0xf7, 0xff, 0xf7, 0x7f, 0x7b, 0xde, | |
36 | }; | |
37 | ||
38 | static const u8 tuning_blk_pattern_8bit[] = { | |
39 | 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, | |
40 | 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, 0xcc, | |
41 | 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, 0xff, | |
42 | 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, 0xff, | |
43 | 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, 0xdd, | |
44 | 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, 0xbb, | |
45 | 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, 0xff, | |
46 | 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, 0xff, | |
47 | 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, | |
48 | 0x00, 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, | |
49 | 0xcc, 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, | |
50 | 0xff, 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, | |
51 | 0xff, 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, | |
52 | 0xdd, 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, | |
53 | 0xbb, 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, | |
54 | 0xff, 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, | |
55 | }; | |
56 | ||
a27fbf2f SJ |
57 | static inline int __mmc_send_status(struct mmc_card *card, u32 *status, |
58 | bool ignore_crc) | |
59 | { | |
60 | int err; | |
61 | struct mmc_command cmd = {0}; | |
62 | ||
63 | BUG_ON(!card); | |
64 | BUG_ON(!card->host); | |
65 | ||
66 | cmd.opcode = MMC_SEND_STATUS; | |
67 | if (!mmc_host_is_spi(card->host)) | |
68 | cmd.arg = card->rca << 16; | |
69 | cmd.flags = MMC_RSP_SPI_R2 | MMC_RSP_R1 | MMC_CMD_AC; | |
70 | if (ignore_crc) | |
71 | cmd.flags &= ~MMC_RSP_CRC; | |
72 | ||
73 | err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES); | |
74 | if (err) | |
75 | return err; | |
76 | ||
77 | /* NOTE: callers are required to understand the difference | |
78 | * between "native" and SPI format status words! | |
79 | */ | |
80 | if (status) | |
81 | *status = cmd.resp[0]; | |
82 | ||
83 | return 0; | |
84 | } | |
85 | ||
86 | int mmc_send_status(struct mmc_card *card, u32 *status) | |
87 | { | |
88 | return __mmc_send_status(card, status, false); | |
89 | } | |
90 | ||
da7fbe58 PO |
91 | static int _mmc_select_card(struct mmc_host *host, struct mmc_card *card) |
92 | { | |
1278dba1 | 93 | struct mmc_command cmd = {0}; |
da7fbe58 PO |
94 | |
95 | BUG_ON(!host); | |
96 | ||
da7fbe58 PO |
97 | cmd.opcode = MMC_SELECT_CARD; |
98 | ||
99 | if (card) { | |
100 | cmd.arg = card->rca << 16; | |
101 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
102 | } else { | |
103 | cmd.arg = 0; | |
104 | cmd.flags = MMC_RSP_NONE | MMC_CMD_AC; | |
105 | } | |
106 | ||
0899e741 | 107 | return mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES); |
da7fbe58 PO |
108 | } |
109 | ||
110 | int mmc_select_card(struct mmc_card *card) | |
111 | { | |
112 | BUG_ON(!card); | |
113 | ||
114 | return _mmc_select_card(card->host, card); | |
115 | } | |
116 | ||
117 | int mmc_deselect_cards(struct mmc_host *host) | |
118 | { | |
119 | return _mmc_select_card(host, NULL); | |
120 | } | |
121 | ||
3d705d14 SH |
122 | /* |
123 | * Write the value specified in the device tree or board code into the optional | |
124 | * 16 bit Driver Stage Register. This can be used to tune raise/fall times and | |
125 | * drive strength of the DAT and CMD outputs. The actual meaning of a given | |
126 | * value is hardware dependant. | |
127 | * The presence of the DSR register can be determined from the CSD register, | |
128 | * bit 76. | |
129 | */ | |
130 | int mmc_set_dsr(struct mmc_host *host) | |
131 | { | |
132 | struct mmc_command cmd = {0}; | |
133 | ||
134 | cmd.opcode = MMC_SET_DSR; | |
135 | ||
136 | cmd.arg = (host->dsr << 16) | 0xffff; | |
137 | cmd.flags = MMC_RSP_NONE | MMC_CMD_AC; | |
138 | ||
139 | return mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES); | |
140 | } | |
141 | ||
da7fbe58 PO |
142 | int mmc_go_idle(struct mmc_host *host) |
143 | { | |
144 | int err; | |
1278dba1 | 145 | struct mmc_command cmd = {0}; |
da7fbe58 | 146 | |
af517150 DB |
147 | /* |
148 | * Non-SPI hosts need to prevent chipselect going active during | |
149 | * GO_IDLE; that would put chips into SPI mode. Remind them of | |
150 | * that in case of hardware that won't pull up DAT3/nCS otherwise. | |
151 | * | |
152 | * SPI hosts ignore ios.chip_select; it's managed according to | |
25985edc | 153 | * rules that must accommodate non-MMC slaves which this layer |
af517150 DB |
154 | * won't even know about. |
155 | */ | |
156 | if (!mmc_host_is_spi(host)) { | |
157 | mmc_set_chip_select(host, MMC_CS_HIGH); | |
158 | mmc_delay(1); | |
159 | } | |
da7fbe58 | 160 | |
da7fbe58 PO |
161 | cmd.opcode = MMC_GO_IDLE_STATE; |
162 | cmd.arg = 0; | |
af517150 | 163 | cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_NONE | MMC_CMD_BC; |
da7fbe58 PO |
164 | |
165 | err = mmc_wait_for_cmd(host, &cmd, 0); | |
166 | ||
167 | mmc_delay(1); | |
168 | ||
af517150 DB |
169 | if (!mmc_host_is_spi(host)) { |
170 | mmc_set_chip_select(host, MMC_CS_DONTCARE); | |
171 | mmc_delay(1); | |
172 | } | |
da7fbe58 | 173 | |
af517150 | 174 | host->use_spi_crc = 0; |
da7fbe58 PO |
175 | |
176 | return err; | |
177 | } | |
178 | ||
179 | int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr) | |
180 | { | |
1278dba1 | 181 | struct mmc_command cmd = {0}; |
da7fbe58 PO |
182 | int i, err = 0; |
183 | ||
184 | BUG_ON(!host); | |
185 | ||
da7fbe58 | 186 | cmd.opcode = MMC_SEND_OP_COND; |
af517150 DB |
187 | cmd.arg = mmc_host_is_spi(host) ? 0 : ocr; |
188 | cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R3 | MMC_CMD_BCR; | |
da7fbe58 PO |
189 | |
190 | for (i = 100; i; i--) { | |
191 | err = mmc_wait_for_cmd(host, &cmd, 0); | |
17b0429d | 192 | if (err) |
da7fbe58 PO |
193 | break; |
194 | ||
af517150 DB |
195 | /* if we're just probing, do a single pass */ |
196 | if (ocr == 0) | |
da7fbe58 PO |
197 | break; |
198 | ||
af517150 DB |
199 | /* otherwise wait until reset completes */ |
200 | if (mmc_host_is_spi(host)) { | |
201 | if (!(cmd.resp[0] & R1_SPI_IDLE)) | |
202 | break; | |
203 | } else { | |
204 | if (cmd.resp[0] & MMC_CARD_BUSY) | |
205 | break; | |
206 | } | |
207 | ||
17b0429d | 208 | err = -ETIMEDOUT; |
da7fbe58 PO |
209 | |
210 | mmc_delay(10); | |
211 | } | |
212 | ||
af517150 | 213 | if (rocr && !mmc_host_is_spi(host)) |
da7fbe58 PO |
214 | *rocr = cmd.resp[0]; |
215 | ||
216 | return err; | |
217 | } | |
218 | ||
219 | int mmc_all_send_cid(struct mmc_host *host, u32 *cid) | |
220 | { | |
221 | int err; | |
1278dba1 | 222 | struct mmc_command cmd = {0}; |
da7fbe58 PO |
223 | |
224 | BUG_ON(!host); | |
225 | BUG_ON(!cid); | |
226 | ||
da7fbe58 PO |
227 | cmd.opcode = MMC_ALL_SEND_CID; |
228 | cmd.arg = 0; | |
229 | cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR; | |
230 | ||
231 | err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES); | |
17b0429d | 232 | if (err) |
da7fbe58 PO |
233 | return err; |
234 | ||
235 | memcpy(cid, cmd.resp, sizeof(u32) * 4); | |
236 | ||
17b0429d | 237 | return 0; |
da7fbe58 PO |
238 | } |
239 | ||
240 | int mmc_set_relative_addr(struct mmc_card *card) | |
241 | { | |
1278dba1 | 242 | struct mmc_command cmd = {0}; |
da7fbe58 PO |
243 | |
244 | BUG_ON(!card); | |
245 | BUG_ON(!card->host); | |
246 | ||
da7fbe58 PO |
247 | cmd.opcode = MMC_SET_RELATIVE_ADDR; |
248 | cmd.arg = card->rca << 16; | |
249 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
250 | ||
0899e741 | 251 | return mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES); |
da7fbe58 PO |
252 | } |
253 | ||
af517150 DB |
254 | static int |
255 | mmc_send_cxd_native(struct mmc_host *host, u32 arg, u32 *cxd, int opcode) | |
da7fbe58 PO |
256 | { |
257 | int err; | |
1278dba1 | 258 | struct mmc_command cmd = {0}; |
da7fbe58 | 259 | |
af517150 DB |
260 | BUG_ON(!host); |
261 | BUG_ON(!cxd); | |
da7fbe58 | 262 | |
af517150 DB |
263 | cmd.opcode = opcode; |
264 | cmd.arg = arg; | |
da7fbe58 PO |
265 | cmd.flags = MMC_RSP_R2 | MMC_CMD_AC; |
266 | ||
af517150 | 267 | err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES); |
17b0429d | 268 | if (err) |
da7fbe58 PO |
269 | return err; |
270 | ||
af517150 | 271 | memcpy(cxd, cmd.resp, sizeof(u32) * 4); |
da7fbe58 | 272 | |
17b0429d | 273 | return 0; |
da7fbe58 PO |
274 | } |
275 | ||
1a41313e KL |
276 | /* |
277 | * NOTE: void *buf, caller for the buf is required to use DMA-capable | |
278 | * buffer or on-stack buffer (with some overhead in callee). | |
279 | */ | |
af517150 DB |
280 | static int |
281 | mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host, | |
282 | u32 opcode, void *buf, unsigned len) | |
da7fbe58 | 283 | { |
ad5fd972 | 284 | struct mmc_request mrq = {NULL}; |
1278dba1 | 285 | struct mmc_command cmd = {0}; |
a61ad2b4 | 286 | struct mmc_data data = {0}; |
da7fbe58 | 287 | struct scatterlist sg; |
da7fbe58 | 288 | |
da7fbe58 PO |
289 | mrq.cmd = &cmd; |
290 | mrq.data = &data; | |
291 | ||
af517150 | 292 | cmd.opcode = opcode; |
da7fbe58 | 293 | cmd.arg = 0; |
da7fbe58 | 294 | |
af517150 DB |
295 | /* NOTE HACK: the MMC_RSP_SPI_R1 is always correct here, but we |
296 | * rely on callers to never use this with "native" calls for reading | |
297 | * CSD or CID. Native versions of those commands use the R2 type, | |
298 | * not R1 plus a data block. | |
299 | */ | |
300 | cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; | |
301 | ||
302 | data.blksz = len; | |
da7fbe58 PO |
303 | data.blocks = 1; |
304 | data.flags = MMC_DATA_READ; | |
305 | data.sg = &sg; | |
306 | data.sg_len = 1; | |
307 | ||
601ed60c | 308 | sg_init_one(&sg, buf, len); |
da7fbe58 | 309 | |
cda56ac2 AH |
310 | if (opcode == MMC_SEND_CSD || opcode == MMC_SEND_CID) { |
311 | /* | |
312 | * The spec states that CSR and CID accesses have a timeout | |
313 | * of 64 clock cycles. | |
314 | */ | |
315 | data.timeout_ns = 0; | |
316 | data.timeout_clks = 64; | |
317 | } else | |
318 | mmc_set_data_timeout(&data, card); | |
da7fbe58 | 319 | |
af517150 DB |
320 | mmc_wait_for_req(host, &mrq); |
321 | ||
17b0429d | 322 | if (cmd.error) |
da7fbe58 | 323 | return cmd.error; |
17b0429d | 324 | if (data.error) |
da7fbe58 PO |
325 | return data.error; |
326 | ||
17b0429d | 327 | return 0; |
da7fbe58 PO |
328 | } |
329 | ||
af517150 DB |
330 | int mmc_send_csd(struct mmc_card *card, u32 *csd) |
331 | { | |
78e48073 | 332 | int ret, i; |
1a41313e | 333 | u32 *csd_tmp; |
78e48073 | 334 | |
af517150 DB |
335 | if (!mmc_host_is_spi(card->host)) |
336 | return mmc_send_cxd_native(card->host, card->rca << 16, | |
337 | csd, MMC_SEND_CSD); | |
338 | ||
22b78700 | 339 | csd_tmp = kzalloc(16, GFP_KERNEL); |
1a41313e KL |
340 | if (!csd_tmp) |
341 | return -ENOMEM; | |
342 | ||
343 | ret = mmc_send_cxd_data(card, card->host, MMC_SEND_CSD, csd_tmp, 16); | |
78e48073 | 344 | if (ret) |
1a41313e | 345 | goto err; |
78e48073 PO |
346 | |
347 | for (i = 0;i < 4;i++) | |
1a41313e | 348 | csd[i] = be32_to_cpu(csd_tmp[i]); |
78e48073 | 349 | |
1a41313e KL |
350 | err: |
351 | kfree(csd_tmp); | |
352 | return ret; | |
af517150 DB |
353 | } |
354 | ||
355 | int mmc_send_cid(struct mmc_host *host, u32 *cid) | |
356 | { | |
78e48073 | 357 | int ret, i; |
1a41313e | 358 | u32 *cid_tmp; |
78e48073 | 359 | |
af517150 DB |
360 | if (!mmc_host_is_spi(host)) { |
361 | if (!host->card) | |
362 | return -EINVAL; | |
363 | return mmc_send_cxd_native(host, host->card->rca << 16, | |
364 | cid, MMC_SEND_CID); | |
365 | } | |
366 | ||
22b78700 | 367 | cid_tmp = kzalloc(16, GFP_KERNEL); |
1a41313e KL |
368 | if (!cid_tmp) |
369 | return -ENOMEM; | |
370 | ||
371 | ret = mmc_send_cxd_data(NULL, host, MMC_SEND_CID, cid_tmp, 16); | |
78e48073 | 372 | if (ret) |
1a41313e | 373 | goto err; |
78e48073 PO |
374 | |
375 | for (i = 0;i < 4;i++) | |
1a41313e | 376 | cid[i] = be32_to_cpu(cid_tmp[i]); |
78e48073 | 377 | |
1a41313e KL |
378 | err: |
379 | kfree(cid_tmp); | |
380 | return ret; | |
af517150 DB |
381 | } |
382 | ||
e21aa519 UH |
383 | int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) |
384 | { | |
385 | int err; | |
386 | u8 *ext_csd; | |
387 | ||
388 | if (!card || !new_ext_csd) | |
389 | return -EINVAL; | |
390 | ||
391 | if (!mmc_can_ext_csd(card)) | |
392 | return -EOPNOTSUPP; | |
393 | ||
394 | /* | |
395 | * As the ext_csd is so large and mostly unused, we don't store the | |
396 | * raw block in mmc_card. | |
397 | */ | |
22b78700 | 398 | ext_csd = kzalloc(512, GFP_KERNEL); |
e21aa519 UH |
399 | if (!ext_csd) |
400 | return -ENOMEM; | |
401 | ||
2fc91e8b UH |
402 | err = mmc_send_cxd_data(card, card->host, MMC_SEND_EXT_CSD, ext_csd, |
403 | 512); | |
e21aa519 UH |
404 | if (err) |
405 | kfree(ext_csd); | |
406 | else | |
407 | *new_ext_csd = ext_csd; | |
408 | ||
409 | return err; | |
410 | } | |
411 | EXPORT_SYMBOL_GPL(mmc_get_ext_csd); | |
412 | ||
af517150 DB |
413 | int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp) |
414 | { | |
1278dba1 | 415 | struct mmc_command cmd = {0}; |
af517150 DB |
416 | int err; |
417 | ||
af517150 DB |
418 | cmd.opcode = MMC_SPI_READ_OCR; |
419 | cmd.arg = highcap ? (1 << 30) : 0; | |
420 | cmd.flags = MMC_RSP_SPI_R3; | |
421 | ||
422 | err = mmc_wait_for_cmd(host, &cmd, 0); | |
423 | ||
424 | *ocrp = cmd.resp[1]; | |
425 | return err; | |
426 | } | |
427 | ||
428 | int mmc_spi_set_crc(struct mmc_host *host, int use_crc) | |
429 | { | |
1278dba1 | 430 | struct mmc_command cmd = {0}; |
af517150 DB |
431 | int err; |
432 | ||
af517150 DB |
433 | cmd.opcode = MMC_SPI_CRC_ON_OFF; |
434 | cmd.flags = MMC_RSP_SPI_R1; | |
435 | cmd.arg = use_crc; | |
436 | ||
437 | err = mmc_wait_for_cmd(host, &cmd, 0); | |
438 | if (!err) | |
439 | host->use_spi_crc = use_crc; | |
440 | return err; | |
441 | } | |
442 | ||
ed16f58d AH |
443 | int mmc_switch_status_error(struct mmc_host *host, u32 status) |
444 | { | |
445 | if (mmc_host_is_spi(host)) { | |
446 | if (status & R1_SPI_ILLEGAL_COMMAND) | |
447 | return -EBADMSG; | |
448 | } else { | |
449 | if (status & 0xFDFFA000) | |
450 | pr_warn("%s: unexpected status %#x after switch\n", | |
451 | mmc_hostname(host), status); | |
452 | if (status & R1_SWITCH_ERROR) | |
453 | return -EBADMSG; | |
454 | } | |
455 | return 0; | |
456 | } | |
457 | ||
d3a8d95d | 458 | /** |
950d56ac | 459 | * __mmc_switch - modify EXT_CSD register |
d3a8d95d AW |
460 | * @card: the MMC card associated with the data transfer |
461 | * @set: cmd set values | |
462 | * @index: EXT_CSD register index | |
463 | * @value: value to program into EXT_CSD register | |
464 | * @timeout_ms: timeout (ms) for operation performed by register write, | |
465 | * timeout of zero implies maximum possible timeout | |
950d56ac | 466 | * @use_busy_signal: use the busy signal as response type |
878e200b | 467 | * @send_status: send status cmd to poll for busy |
4509f847 | 468 | * @ignore_crc: ignore CRC errors when sending status cmd to poll for busy |
d3a8d95d AW |
469 | * |
470 | * Modifies the EXT_CSD register for selected card. | |
471 | */ | |
950d56ac | 472 | int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, |
4509f847 UH |
473 | unsigned int timeout_ms, bool use_busy_signal, bool send_status, |
474 | bool ignore_crc) | |
da7fbe58 | 475 | { |
636bd13c | 476 | struct mmc_host *host = card->host; |
da7fbe58 | 477 | int err; |
1278dba1 | 478 | struct mmc_command cmd = {0}; |
8fee476b | 479 | unsigned long timeout; |
ecd3a7da | 480 | u32 status = 0; |
b9ec2616 | 481 | bool use_r1b_resp = use_busy_signal; |
3bbb0dee | 482 | bool expired = false; |
b9ec2616 | 483 | |
c6dbab9c AH |
484 | mmc_retune_hold(host); |
485 | ||
b9ec2616 UH |
486 | /* |
487 | * If the cmd timeout and the max_busy_timeout of the host are both | |
488 | * specified, let's validate them. A failure means we need to prevent | |
489 | * the host from doing hw busy detection, which is done by converting | |
490 | * to a R1 response instead of a R1B. | |
491 | */ | |
492 | if (timeout_ms && host->max_busy_timeout && | |
493 | (timeout_ms > host->max_busy_timeout)) | |
494 | use_r1b_resp = false; | |
da7fbe58 | 495 | |
da7fbe58 PO |
496 | cmd.opcode = MMC_SWITCH; |
497 | cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | | |
498 | (index << 16) | | |
499 | (value << 8) | | |
500 | set; | |
950d56ac | 501 | cmd.flags = MMC_CMD_AC; |
b9ec2616 | 502 | if (use_r1b_resp) { |
950d56ac | 503 | cmd.flags |= MMC_RSP_SPI_R1B | MMC_RSP_R1B; |
b9ec2616 UH |
504 | /* |
505 | * A busy_timeout of zero means the host can decide to use | |
506 | * whatever value it finds suitable. | |
507 | */ | |
508 | cmd.busy_timeout = timeout_ms; | |
509 | } else { | |
950d56ac | 510 | cmd.flags |= MMC_RSP_SPI_R1 | MMC_RSP_R1; |
b9ec2616 | 511 | } |
950d56ac | 512 | |
775a9362 ME |
513 | if (index == EXT_CSD_SANITIZE_START) |
514 | cmd.sanitize_busy = true; | |
da7fbe58 | 515 | |
636bd13c | 516 | err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES); |
17b0429d | 517 | if (err) |
c6dbab9c | 518 | goto out; |
da7fbe58 | 519 | |
950d56ac JC |
520 | /* No need to check card status in case of unblocking command */ |
521 | if (!use_busy_signal) | |
c6dbab9c | 522 | goto out; |
950d56ac | 523 | |
a27fbf2f | 524 | /* |
4509f847 UH |
525 | * CRC errors shall only be ignored in cases were CMD13 is used to poll |
526 | * to detect busy completion. | |
a27fbf2f | 527 | */ |
b9ec2616 | 528 | if ((host->caps & MMC_CAP_WAIT_WHILE_BUSY) && use_r1b_resp) |
4509f847 | 529 | ignore_crc = false; |
a27fbf2f | 530 | |
b9ec2616 UH |
531 | /* We have an unspecified cmd timeout, use the fallback value. */ |
532 | if (!timeout_ms) | |
533 | timeout_ms = MMC_OPS_TIMEOUT_MS; | |
534 | ||
4509f847 | 535 | /* Must check status to be sure of no errors. */ |
b9ec2616 | 536 | timeout = jiffies + msecs_to_jiffies(timeout_ms); |
ef0b27d4 | 537 | do { |
878e200b | 538 | if (send_status) { |
3bbb0dee CJ |
539 | /* |
540 | * Due to the possibility of being preempted after | |
541 | * sending the status command, check the expiration | |
542 | * time first. | |
543 | */ | |
544 | expired = time_after(jiffies, timeout); | |
878e200b UH |
545 | err = __mmc_send_status(card, &status, ignore_crc); |
546 | if (err) | |
c6dbab9c | 547 | goto out; |
878e200b | 548 | } |
b9ec2616 | 549 | if ((host->caps & MMC_CAP_WAIT_WHILE_BUSY) && use_r1b_resp) |
ef0b27d4 | 550 | break; |
636bd13c | 551 | if (mmc_host_is_spi(host)) |
ef0b27d4 | 552 | break; |
8fee476b | 553 | |
878e200b UH |
554 | /* |
555 | * We are not allowed to issue a status command and the host | |
556 | * does'nt support MMC_CAP_WAIT_WHILE_BUSY, then we can only | |
557 | * rely on waiting for the stated timeout to be sufficient. | |
558 | */ | |
559 | if (!send_status) { | |
560 | mmc_delay(timeout_ms); | |
c6dbab9c | 561 | goto out; |
878e200b UH |
562 | } |
563 | ||
8fee476b | 564 | /* Timeout if the device never leaves the program state. */ |
3bbb0dee | 565 | if (expired && R1_CURRENT_STATE(status) == R1_STATE_PRG) { |
8fee476b | 566 | pr_err("%s: Card stuck in programming state! %s\n", |
636bd13c | 567 | mmc_hostname(host), __func__); |
c6dbab9c AH |
568 | err = -ETIMEDOUT; |
569 | goto out; | |
8fee476b | 570 | } |
7435bb79 | 571 | } while (R1_CURRENT_STATE(status) == R1_STATE_PRG); |
ef0b27d4 | 572 | |
ed16f58d | 573 | err = mmc_switch_status_error(host, status); |
c6dbab9c AH |
574 | out: |
575 | mmc_retune_release(host); | |
ef0b27d4 | 576 | |
c6dbab9c | 577 | return err; |
da7fbe58 | 578 | } |
950d56ac JC |
579 | |
580 | int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, | |
581 | unsigned int timeout_ms) | |
582 | { | |
4509f847 UH |
583 | return __mmc_switch(card, set, index, value, timeout_ms, true, true, |
584 | false); | |
950d56ac | 585 | } |
d3a8d95d | 586 | EXPORT_SYMBOL_GPL(mmc_switch); |
da7fbe58 | 587 | |
9979dbe5 | 588 | int mmc_send_tuning(struct mmc_host *host, u32 opcode, int *cmd_error) |
996903de MC |
589 | { |
590 | struct mmc_request mrq = {NULL}; | |
591 | struct mmc_command cmd = {0}; | |
592 | struct mmc_data data = {0}; | |
593 | struct scatterlist sg; | |
fe5afb13 | 594 | struct mmc_ios *ios = &host->ios; |
996903de MC |
595 | const u8 *tuning_block_pattern; |
596 | int size, err = 0; | |
597 | u8 *data_buf; | |
996903de MC |
598 | |
599 | if (ios->bus_width == MMC_BUS_WIDTH_8) { | |
600 | tuning_block_pattern = tuning_blk_pattern_8bit; | |
601 | size = sizeof(tuning_blk_pattern_8bit); | |
996903de MC |
602 | } else if (ios->bus_width == MMC_BUS_WIDTH_4) { |
603 | tuning_block_pattern = tuning_blk_pattern_4bit; | |
604 | size = sizeof(tuning_blk_pattern_4bit); | |
996903de MC |
605 | } else |
606 | return -EINVAL; | |
607 | ||
608 | data_buf = kzalloc(size, GFP_KERNEL); | |
609 | if (!data_buf) | |
610 | return -ENOMEM; | |
611 | ||
612 | mrq.cmd = &cmd; | |
613 | mrq.data = &data; | |
614 | ||
615 | cmd.opcode = opcode; | |
616 | cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; | |
617 | ||
618 | data.blksz = size; | |
619 | data.blocks = 1; | |
620 | data.flags = MMC_DATA_READ; | |
621 | ||
622 | /* | |
623 | * According to the tuning specs, Tuning process | |
624 | * is normally shorter 40 executions of CMD19, | |
625 | * and timeout value should be shorter than 150 ms | |
626 | */ | |
627 | data.timeout_ns = 150 * NSEC_PER_MSEC; | |
628 | ||
629 | data.sg = &sg; | |
630 | data.sg_len = 1; | |
631 | sg_init_one(&sg, data_buf, size); | |
632 | ||
fe5afb13 | 633 | mmc_wait_for_req(host, &mrq); |
996903de | 634 | |
9979dbe5 CJ |
635 | if (cmd_error) |
636 | *cmd_error = cmd.error; | |
637 | ||
996903de MC |
638 | if (cmd.error) { |
639 | err = cmd.error; | |
640 | goto out; | |
641 | } | |
642 | ||
643 | if (data.error) { | |
644 | err = data.error; | |
645 | goto out; | |
646 | } | |
647 | ||
648 | if (memcmp(data_buf, tuning_block_pattern, size)) | |
649 | err = -EIO; | |
650 | ||
651 | out: | |
652 | kfree(data_buf); | |
653 | return err; | |
654 | } | |
655 | EXPORT_SYMBOL_GPL(mmc_send_tuning); | |
656 | ||
22113efd AL |
657 | static int |
658 | mmc_send_bus_test(struct mmc_card *card, struct mmc_host *host, u8 opcode, | |
659 | u8 len) | |
660 | { | |
ad5fd972 | 661 | struct mmc_request mrq = {NULL}; |
1278dba1 | 662 | struct mmc_command cmd = {0}; |
a61ad2b4 | 663 | struct mmc_data data = {0}; |
22113efd AL |
664 | struct scatterlist sg; |
665 | u8 *data_buf; | |
666 | u8 *test_buf; | |
667 | int i, err; | |
668 | static u8 testdata_8bit[8] = { 0x55, 0xaa, 0, 0, 0, 0, 0, 0 }; | |
669 | static u8 testdata_4bit[4] = { 0x5a, 0, 0, 0 }; | |
670 | ||
671 | /* dma onto stack is unsafe/nonportable, but callers to this | |
672 | * routine normally provide temporary on-stack buffers ... | |
673 | */ | |
674 | data_buf = kmalloc(len, GFP_KERNEL); | |
675 | if (!data_buf) | |
676 | return -ENOMEM; | |
677 | ||
678 | if (len == 8) | |
679 | test_buf = testdata_8bit; | |
680 | else if (len == 4) | |
681 | test_buf = testdata_4bit; | |
682 | else { | |
a3c76eb9 | 683 | pr_err("%s: Invalid bus_width %d\n", |
22113efd AL |
684 | mmc_hostname(host), len); |
685 | kfree(data_buf); | |
686 | return -EINVAL; | |
687 | } | |
688 | ||
689 | if (opcode == MMC_BUS_TEST_W) | |
690 | memcpy(data_buf, test_buf, len); | |
691 | ||
22113efd AL |
692 | mrq.cmd = &cmd; |
693 | mrq.data = &data; | |
694 | cmd.opcode = opcode; | |
695 | cmd.arg = 0; | |
696 | ||
697 | /* NOTE HACK: the MMC_RSP_SPI_R1 is always correct here, but we | |
698 | * rely on callers to never use this with "native" calls for reading | |
699 | * CSD or CID. Native versions of those commands use the R2 type, | |
700 | * not R1 plus a data block. | |
701 | */ | |
702 | cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; | |
703 | ||
704 | data.blksz = len; | |
705 | data.blocks = 1; | |
706 | if (opcode == MMC_BUS_TEST_R) | |
707 | data.flags = MMC_DATA_READ; | |
708 | else | |
709 | data.flags = MMC_DATA_WRITE; | |
710 | ||
711 | data.sg = &sg; | |
712 | data.sg_len = 1; | |
84532e33 | 713 | mmc_set_data_timeout(&data, card); |
22113efd AL |
714 | sg_init_one(&sg, data_buf, len); |
715 | mmc_wait_for_req(host, &mrq); | |
716 | err = 0; | |
717 | if (opcode == MMC_BUS_TEST_R) { | |
718 | for (i = 0; i < len / 4; i++) | |
719 | if ((test_buf[i] ^ data_buf[i]) != 0xff) { | |
720 | err = -EIO; | |
721 | break; | |
722 | } | |
723 | } | |
724 | kfree(data_buf); | |
725 | ||
726 | if (cmd.error) | |
727 | return cmd.error; | |
728 | if (data.error) | |
729 | return data.error; | |
730 | ||
731 | return err; | |
732 | } | |
733 | ||
734 | int mmc_bus_test(struct mmc_card *card, u8 bus_width) | |
735 | { | |
0899e741 | 736 | int width; |
22113efd AL |
737 | |
738 | if (bus_width == MMC_BUS_WIDTH_8) | |
739 | width = 8; | |
740 | else if (bus_width == MMC_BUS_WIDTH_4) | |
741 | width = 4; | |
742 | else if (bus_width == MMC_BUS_WIDTH_1) | |
743 | return 0; /* no need for test */ | |
744 | else | |
745 | return -EINVAL; | |
746 | ||
747 | /* | |
748 | * Ignore errors from BUS_TEST_W. BUS_TEST_R will fail if there | |
749 | * is a problem. This improves chances that the test will work. | |
750 | */ | |
751 | mmc_send_bus_test(card, card->host, MMC_BUS_TEST_W, width); | |
0899e741 | 752 | return mmc_send_bus_test(card, card->host, MMC_BUS_TEST_R, width); |
22113efd | 753 | } |
eb0d8f13 JC |
754 | |
755 | int mmc_send_hpi_cmd(struct mmc_card *card, u32 *status) | |
756 | { | |
757 | struct mmc_command cmd = {0}; | |
758 | unsigned int opcode; | |
eb0d8f13 JC |
759 | int err; |
760 | ||
2378975b | 761 | if (!card->ext_csd.hpi) { |
6606110d JP |
762 | pr_warn("%s: Card didn't support HPI command\n", |
763 | mmc_hostname(card->host)); | |
2378975b JC |
764 | return -EINVAL; |
765 | } | |
766 | ||
eb0d8f13 JC |
767 | opcode = card->ext_csd.hpi_cmd; |
768 | if (opcode == MMC_STOP_TRANSMISSION) | |
2378975b | 769 | cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; |
eb0d8f13 | 770 | else if (opcode == MMC_SEND_STATUS) |
2378975b | 771 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; |
eb0d8f13 JC |
772 | |
773 | cmd.opcode = opcode; | |
774 | cmd.arg = card->rca << 16 | 1; | |
eb0d8f13 JC |
775 | |
776 | err = mmc_wait_for_cmd(card->host, &cmd, 0); | |
777 | if (err) { | |
778 | pr_warn("%s: error %d interrupting operation. " | |
779 | "HPI command response %#x\n", mmc_hostname(card->host), | |
780 | err, cmd.resp[0]); | |
781 | return err; | |
782 | } | |
783 | if (status) | |
784 | *status = cmd.resp[0]; | |
785 | ||
786 | return 0; | |
787 | } | |
148bcab2 UH |
788 | |
789 | int mmc_can_ext_csd(struct mmc_card *card) | |
790 | { | |
791 | return (card && card->csd.mmca_vsn > CSD_SPEC_VER_3); | |
792 | } |