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 | { | |
93 | int err; | |
1278dba1 | 94 | struct mmc_command cmd = {0}; |
da7fbe58 PO |
95 | |
96 | BUG_ON(!host); | |
97 | ||
da7fbe58 PO |
98 | cmd.opcode = MMC_SELECT_CARD; |
99 | ||
100 | if (card) { | |
101 | cmd.arg = card->rca << 16; | |
102 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
103 | } else { | |
104 | cmd.arg = 0; | |
105 | cmd.flags = MMC_RSP_NONE | MMC_CMD_AC; | |
106 | } | |
107 | ||
108 | err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES); | |
17b0429d | 109 | if (err) |
da7fbe58 PO |
110 | return err; |
111 | ||
17b0429d | 112 | return 0; |
da7fbe58 PO |
113 | } |
114 | ||
115 | int mmc_select_card(struct mmc_card *card) | |
116 | { | |
117 | BUG_ON(!card); | |
118 | ||
119 | return _mmc_select_card(card->host, card); | |
120 | } | |
121 | ||
122 | int mmc_deselect_cards(struct mmc_host *host) | |
123 | { | |
124 | return _mmc_select_card(host, NULL); | |
125 | } | |
126 | ||
3d705d14 SH |
127 | /* |
128 | * Write the value specified in the device tree or board code into the optional | |
129 | * 16 bit Driver Stage Register. This can be used to tune raise/fall times and | |
130 | * drive strength of the DAT and CMD outputs. The actual meaning of a given | |
131 | * value is hardware dependant. | |
132 | * The presence of the DSR register can be determined from the CSD register, | |
133 | * bit 76. | |
134 | */ | |
135 | int mmc_set_dsr(struct mmc_host *host) | |
136 | { | |
137 | struct mmc_command cmd = {0}; | |
138 | ||
139 | cmd.opcode = MMC_SET_DSR; | |
140 | ||
141 | cmd.arg = (host->dsr << 16) | 0xffff; | |
142 | cmd.flags = MMC_RSP_NONE | MMC_CMD_AC; | |
143 | ||
144 | return mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES); | |
145 | } | |
146 | ||
da7fbe58 PO |
147 | int mmc_go_idle(struct mmc_host *host) |
148 | { | |
149 | int err; | |
1278dba1 | 150 | struct mmc_command cmd = {0}; |
da7fbe58 | 151 | |
af517150 DB |
152 | /* |
153 | * Non-SPI hosts need to prevent chipselect going active during | |
154 | * GO_IDLE; that would put chips into SPI mode. Remind them of | |
155 | * that in case of hardware that won't pull up DAT3/nCS otherwise. | |
156 | * | |
157 | * SPI hosts ignore ios.chip_select; it's managed according to | |
25985edc | 158 | * rules that must accommodate non-MMC slaves which this layer |
af517150 DB |
159 | * won't even know about. |
160 | */ | |
161 | if (!mmc_host_is_spi(host)) { | |
162 | mmc_set_chip_select(host, MMC_CS_HIGH); | |
163 | mmc_delay(1); | |
164 | } | |
da7fbe58 | 165 | |
da7fbe58 PO |
166 | cmd.opcode = MMC_GO_IDLE_STATE; |
167 | cmd.arg = 0; | |
af517150 | 168 | cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_NONE | MMC_CMD_BC; |
da7fbe58 PO |
169 | |
170 | err = mmc_wait_for_cmd(host, &cmd, 0); | |
171 | ||
172 | mmc_delay(1); | |
173 | ||
af517150 DB |
174 | if (!mmc_host_is_spi(host)) { |
175 | mmc_set_chip_select(host, MMC_CS_DONTCARE); | |
176 | mmc_delay(1); | |
177 | } | |
da7fbe58 | 178 | |
af517150 | 179 | host->use_spi_crc = 0; |
da7fbe58 PO |
180 | |
181 | return err; | |
182 | } | |
183 | ||
184 | int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr) | |
185 | { | |
1278dba1 | 186 | struct mmc_command cmd = {0}; |
da7fbe58 PO |
187 | int i, err = 0; |
188 | ||
189 | BUG_ON(!host); | |
190 | ||
da7fbe58 | 191 | cmd.opcode = MMC_SEND_OP_COND; |
af517150 DB |
192 | cmd.arg = mmc_host_is_spi(host) ? 0 : ocr; |
193 | cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R3 | MMC_CMD_BCR; | |
da7fbe58 PO |
194 | |
195 | for (i = 100; i; i--) { | |
196 | err = mmc_wait_for_cmd(host, &cmd, 0); | |
17b0429d | 197 | if (err) |
da7fbe58 PO |
198 | break; |
199 | ||
af517150 DB |
200 | /* if we're just probing, do a single pass */ |
201 | if (ocr == 0) | |
da7fbe58 PO |
202 | break; |
203 | ||
af517150 DB |
204 | /* otherwise wait until reset completes */ |
205 | if (mmc_host_is_spi(host)) { | |
206 | if (!(cmd.resp[0] & R1_SPI_IDLE)) | |
207 | break; | |
208 | } else { | |
209 | if (cmd.resp[0] & MMC_CARD_BUSY) | |
210 | break; | |
211 | } | |
212 | ||
17b0429d | 213 | err = -ETIMEDOUT; |
da7fbe58 PO |
214 | |
215 | mmc_delay(10); | |
216 | } | |
217 | ||
af517150 | 218 | if (rocr && !mmc_host_is_spi(host)) |
da7fbe58 PO |
219 | *rocr = cmd.resp[0]; |
220 | ||
221 | return err; | |
222 | } | |
223 | ||
224 | int mmc_all_send_cid(struct mmc_host *host, u32 *cid) | |
225 | { | |
226 | int err; | |
1278dba1 | 227 | struct mmc_command cmd = {0}; |
da7fbe58 PO |
228 | |
229 | BUG_ON(!host); | |
230 | BUG_ON(!cid); | |
231 | ||
da7fbe58 PO |
232 | cmd.opcode = MMC_ALL_SEND_CID; |
233 | cmd.arg = 0; | |
234 | cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR; | |
235 | ||
236 | err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES); | |
17b0429d | 237 | if (err) |
da7fbe58 PO |
238 | return err; |
239 | ||
240 | memcpy(cid, cmd.resp, sizeof(u32) * 4); | |
241 | ||
17b0429d | 242 | return 0; |
da7fbe58 PO |
243 | } |
244 | ||
245 | int mmc_set_relative_addr(struct mmc_card *card) | |
246 | { | |
247 | int err; | |
1278dba1 | 248 | struct mmc_command cmd = {0}; |
da7fbe58 PO |
249 | |
250 | BUG_ON(!card); | |
251 | BUG_ON(!card->host); | |
252 | ||
da7fbe58 PO |
253 | cmd.opcode = MMC_SET_RELATIVE_ADDR; |
254 | cmd.arg = card->rca << 16; | |
255 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; | |
256 | ||
257 | err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES); | |
17b0429d | 258 | if (err) |
da7fbe58 PO |
259 | return err; |
260 | ||
17b0429d | 261 | return 0; |
da7fbe58 PO |
262 | } |
263 | ||
af517150 DB |
264 | static int |
265 | mmc_send_cxd_native(struct mmc_host *host, u32 arg, u32 *cxd, int opcode) | |
da7fbe58 PO |
266 | { |
267 | int err; | |
1278dba1 | 268 | struct mmc_command cmd = {0}; |
da7fbe58 | 269 | |
af517150 DB |
270 | BUG_ON(!host); |
271 | BUG_ON(!cxd); | |
da7fbe58 | 272 | |
af517150 DB |
273 | cmd.opcode = opcode; |
274 | cmd.arg = arg; | |
da7fbe58 PO |
275 | cmd.flags = MMC_RSP_R2 | MMC_CMD_AC; |
276 | ||
af517150 | 277 | err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES); |
17b0429d | 278 | if (err) |
da7fbe58 PO |
279 | return err; |
280 | ||
af517150 | 281 | memcpy(cxd, cmd.resp, sizeof(u32) * 4); |
da7fbe58 | 282 | |
17b0429d | 283 | return 0; |
da7fbe58 PO |
284 | } |
285 | ||
1a41313e KL |
286 | /* |
287 | * NOTE: void *buf, caller for the buf is required to use DMA-capable | |
288 | * buffer or on-stack buffer (with some overhead in callee). | |
289 | */ | |
af517150 DB |
290 | static int |
291 | mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host, | |
292 | u32 opcode, void *buf, unsigned len) | |
da7fbe58 | 293 | { |
ad5fd972 | 294 | struct mmc_request mrq = {NULL}; |
1278dba1 | 295 | struct mmc_command cmd = {0}; |
a61ad2b4 | 296 | struct mmc_data data = {0}; |
da7fbe58 | 297 | struct scatterlist sg; |
da7fbe58 | 298 | |
da7fbe58 PO |
299 | mrq.cmd = &cmd; |
300 | mrq.data = &data; | |
301 | ||
af517150 | 302 | cmd.opcode = opcode; |
da7fbe58 | 303 | cmd.arg = 0; |
da7fbe58 | 304 | |
af517150 DB |
305 | /* NOTE HACK: the MMC_RSP_SPI_R1 is always correct here, but we |
306 | * rely on callers to never use this with "native" calls for reading | |
307 | * CSD or CID. Native versions of those commands use the R2 type, | |
308 | * not R1 plus a data block. | |
309 | */ | |
310 | cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; | |
311 | ||
312 | data.blksz = len; | |
da7fbe58 PO |
313 | data.blocks = 1; |
314 | data.flags = MMC_DATA_READ; | |
315 | data.sg = &sg; | |
316 | data.sg_len = 1; | |
317 | ||
601ed60c | 318 | sg_init_one(&sg, buf, len); |
da7fbe58 | 319 | |
cda56ac2 AH |
320 | if (opcode == MMC_SEND_CSD || opcode == MMC_SEND_CID) { |
321 | /* | |
322 | * The spec states that CSR and CID accesses have a timeout | |
323 | * of 64 clock cycles. | |
324 | */ | |
325 | data.timeout_ns = 0; | |
326 | data.timeout_clks = 64; | |
327 | } else | |
328 | mmc_set_data_timeout(&data, card); | |
da7fbe58 | 329 | |
af517150 DB |
330 | mmc_wait_for_req(host, &mrq); |
331 | ||
17b0429d | 332 | if (cmd.error) |
da7fbe58 | 333 | return cmd.error; |
17b0429d | 334 | if (data.error) |
da7fbe58 PO |
335 | return data.error; |
336 | ||
17b0429d | 337 | return 0; |
da7fbe58 PO |
338 | } |
339 | ||
af517150 DB |
340 | int mmc_send_csd(struct mmc_card *card, u32 *csd) |
341 | { | |
78e48073 | 342 | int ret, i; |
1a41313e | 343 | u32 *csd_tmp; |
78e48073 | 344 | |
af517150 DB |
345 | if (!mmc_host_is_spi(card->host)) |
346 | return mmc_send_cxd_native(card->host, card->rca << 16, | |
347 | csd, MMC_SEND_CSD); | |
348 | ||
22b78700 | 349 | csd_tmp = kzalloc(16, GFP_KERNEL); |
1a41313e KL |
350 | if (!csd_tmp) |
351 | return -ENOMEM; | |
352 | ||
353 | ret = mmc_send_cxd_data(card, card->host, MMC_SEND_CSD, csd_tmp, 16); | |
78e48073 | 354 | if (ret) |
1a41313e | 355 | goto err; |
78e48073 PO |
356 | |
357 | for (i = 0;i < 4;i++) | |
1a41313e | 358 | csd[i] = be32_to_cpu(csd_tmp[i]); |
78e48073 | 359 | |
1a41313e KL |
360 | err: |
361 | kfree(csd_tmp); | |
362 | return ret; | |
af517150 DB |
363 | } |
364 | ||
365 | int mmc_send_cid(struct mmc_host *host, u32 *cid) | |
366 | { | |
78e48073 | 367 | int ret, i; |
1a41313e | 368 | u32 *cid_tmp; |
78e48073 | 369 | |
af517150 DB |
370 | if (!mmc_host_is_spi(host)) { |
371 | if (!host->card) | |
372 | return -EINVAL; | |
373 | return mmc_send_cxd_native(host, host->card->rca << 16, | |
374 | cid, MMC_SEND_CID); | |
375 | } | |
376 | ||
22b78700 | 377 | cid_tmp = kzalloc(16, GFP_KERNEL); |
1a41313e KL |
378 | if (!cid_tmp) |
379 | return -ENOMEM; | |
380 | ||
381 | ret = mmc_send_cxd_data(NULL, host, MMC_SEND_CID, cid_tmp, 16); | |
78e48073 | 382 | if (ret) |
1a41313e | 383 | goto err; |
78e48073 PO |
384 | |
385 | for (i = 0;i < 4;i++) | |
1a41313e | 386 | cid[i] = be32_to_cpu(cid_tmp[i]); |
78e48073 | 387 | |
1a41313e KL |
388 | err: |
389 | kfree(cid_tmp); | |
390 | return ret; | |
af517150 DB |
391 | } |
392 | ||
e21aa519 UH |
393 | int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) |
394 | { | |
395 | int err; | |
396 | u8 *ext_csd; | |
397 | ||
398 | if (!card || !new_ext_csd) | |
399 | return -EINVAL; | |
400 | ||
401 | if (!mmc_can_ext_csd(card)) | |
402 | return -EOPNOTSUPP; | |
403 | ||
404 | /* | |
405 | * As the ext_csd is so large and mostly unused, we don't store the | |
406 | * raw block in mmc_card. | |
407 | */ | |
22b78700 | 408 | ext_csd = kzalloc(512, GFP_KERNEL); |
e21aa519 UH |
409 | if (!ext_csd) |
410 | return -ENOMEM; | |
411 | ||
2fc91e8b UH |
412 | err = mmc_send_cxd_data(card, card->host, MMC_SEND_EXT_CSD, ext_csd, |
413 | 512); | |
e21aa519 UH |
414 | if (err) |
415 | kfree(ext_csd); | |
416 | else | |
417 | *new_ext_csd = ext_csd; | |
418 | ||
419 | return err; | |
420 | } | |
421 | EXPORT_SYMBOL_GPL(mmc_get_ext_csd); | |
422 | ||
af517150 DB |
423 | int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp) |
424 | { | |
1278dba1 | 425 | struct mmc_command cmd = {0}; |
af517150 DB |
426 | int err; |
427 | ||
af517150 DB |
428 | cmd.opcode = MMC_SPI_READ_OCR; |
429 | cmd.arg = highcap ? (1 << 30) : 0; | |
430 | cmd.flags = MMC_RSP_SPI_R3; | |
431 | ||
432 | err = mmc_wait_for_cmd(host, &cmd, 0); | |
433 | ||
434 | *ocrp = cmd.resp[1]; | |
435 | return err; | |
436 | } | |
437 | ||
438 | int mmc_spi_set_crc(struct mmc_host *host, int use_crc) | |
439 | { | |
1278dba1 | 440 | struct mmc_command cmd = {0}; |
af517150 DB |
441 | int err; |
442 | ||
af517150 DB |
443 | cmd.opcode = MMC_SPI_CRC_ON_OFF; |
444 | cmd.flags = MMC_RSP_SPI_R1; | |
445 | cmd.arg = use_crc; | |
446 | ||
447 | err = mmc_wait_for_cmd(host, &cmd, 0); | |
448 | if (!err) | |
449 | host->use_spi_crc = use_crc; | |
450 | return err; | |
451 | } | |
452 | ||
ed16f58d AH |
453 | int mmc_switch_status_error(struct mmc_host *host, u32 status) |
454 | { | |
455 | if (mmc_host_is_spi(host)) { | |
456 | if (status & R1_SPI_ILLEGAL_COMMAND) | |
457 | return -EBADMSG; | |
458 | } else { | |
459 | if (status & 0xFDFFA000) | |
460 | pr_warn("%s: unexpected status %#x after switch\n", | |
461 | mmc_hostname(host), status); | |
462 | if (status & R1_SWITCH_ERROR) | |
463 | return -EBADMSG; | |
464 | } | |
465 | return 0; | |
466 | } | |
467 | ||
d3a8d95d | 468 | /** |
950d56ac | 469 | * __mmc_switch - modify EXT_CSD register |
d3a8d95d AW |
470 | * @card: the MMC card associated with the data transfer |
471 | * @set: cmd set values | |
472 | * @index: EXT_CSD register index | |
473 | * @value: value to program into EXT_CSD register | |
474 | * @timeout_ms: timeout (ms) for operation performed by register write, | |
475 | * timeout of zero implies maximum possible timeout | |
950d56ac | 476 | * @use_busy_signal: use the busy signal as response type |
878e200b | 477 | * @send_status: send status cmd to poll for busy |
4509f847 | 478 | * @ignore_crc: ignore CRC errors when sending status cmd to poll for busy |
d3a8d95d AW |
479 | * |
480 | * Modifies the EXT_CSD register for selected card. | |
481 | */ | |
950d56ac | 482 | int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, |
4509f847 UH |
483 | unsigned int timeout_ms, bool use_busy_signal, bool send_status, |
484 | bool ignore_crc) | |
da7fbe58 | 485 | { |
636bd13c | 486 | struct mmc_host *host = card->host; |
da7fbe58 | 487 | int err; |
1278dba1 | 488 | struct mmc_command cmd = {0}; |
8fee476b | 489 | unsigned long timeout; |
ecd3a7da | 490 | u32 status = 0; |
b9ec2616 UH |
491 | bool use_r1b_resp = use_busy_signal; |
492 | ||
c6dbab9c AH |
493 | mmc_retune_hold(host); |
494 | ||
b9ec2616 UH |
495 | /* |
496 | * If the cmd timeout and the max_busy_timeout of the host are both | |
497 | * specified, let's validate them. A failure means we need to prevent | |
498 | * the host from doing hw busy detection, which is done by converting | |
499 | * to a R1 response instead of a R1B. | |
500 | */ | |
501 | if (timeout_ms && host->max_busy_timeout && | |
502 | (timeout_ms > host->max_busy_timeout)) | |
503 | use_r1b_resp = false; | |
da7fbe58 | 504 | |
da7fbe58 PO |
505 | cmd.opcode = MMC_SWITCH; |
506 | cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | | |
507 | (index << 16) | | |
508 | (value << 8) | | |
509 | set; | |
950d56ac | 510 | cmd.flags = MMC_CMD_AC; |
b9ec2616 | 511 | if (use_r1b_resp) { |
950d56ac | 512 | cmd.flags |= MMC_RSP_SPI_R1B | MMC_RSP_R1B; |
b9ec2616 UH |
513 | /* |
514 | * A busy_timeout of zero means the host can decide to use | |
515 | * whatever value it finds suitable. | |
516 | */ | |
517 | cmd.busy_timeout = timeout_ms; | |
518 | } else { | |
950d56ac | 519 | cmd.flags |= MMC_RSP_SPI_R1 | MMC_RSP_R1; |
b9ec2616 | 520 | } |
950d56ac | 521 | |
775a9362 ME |
522 | if (index == EXT_CSD_SANITIZE_START) |
523 | cmd.sanitize_busy = true; | |
da7fbe58 | 524 | |
636bd13c | 525 | err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES); |
17b0429d | 526 | if (err) |
c6dbab9c | 527 | goto out; |
da7fbe58 | 528 | |
950d56ac JC |
529 | /* No need to check card status in case of unblocking command */ |
530 | if (!use_busy_signal) | |
c6dbab9c | 531 | goto out; |
950d56ac | 532 | |
a27fbf2f | 533 | /* |
4509f847 UH |
534 | * CRC errors shall only be ignored in cases were CMD13 is used to poll |
535 | * to detect busy completion. | |
a27fbf2f | 536 | */ |
b9ec2616 | 537 | if ((host->caps & MMC_CAP_WAIT_WHILE_BUSY) && use_r1b_resp) |
4509f847 | 538 | ignore_crc = false; |
a27fbf2f | 539 | |
b9ec2616 UH |
540 | /* We have an unspecified cmd timeout, use the fallback value. */ |
541 | if (!timeout_ms) | |
542 | timeout_ms = MMC_OPS_TIMEOUT_MS; | |
543 | ||
4509f847 | 544 | /* Must check status to be sure of no errors. */ |
b9ec2616 | 545 | timeout = jiffies + msecs_to_jiffies(timeout_ms); |
ef0b27d4 | 546 | do { |
878e200b UH |
547 | if (send_status) { |
548 | err = __mmc_send_status(card, &status, ignore_crc); | |
549 | if (err) | |
c6dbab9c | 550 | goto out; |
878e200b | 551 | } |
b9ec2616 | 552 | if ((host->caps & MMC_CAP_WAIT_WHILE_BUSY) && use_r1b_resp) |
ef0b27d4 | 553 | break; |
636bd13c | 554 | if (mmc_host_is_spi(host)) |
ef0b27d4 | 555 | break; |
8fee476b | 556 | |
878e200b UH |
557 | /* |
558 | * We are not allowed to issue a status command and the host | |
559 | * does'nt support MMC_CAP_WAIT_WHILE_BUSY, then we can only | |
560 | * rely on waiting for the stated timeout to be sufficient. | |
561 | */ | |
562 | if (!send_status) { | |
563 | mmc_delay(timeout_ms); | |
c6dbab9c | 564 | goto out; |
878e200b UH |
565 | } |
566 | ||
8fee476b TR |
567 | /* Timeout if the device never leaves the program state. */ |
568 | if (time_after(jiffies, timeout)) { | |
569 | pr_err("%s: Card stuck in programming state! %s\n", | |
636bd13c | 570 | mmc_hostname(host), __func__); |
c6dbab9c AH |
571 | err = -ETIMEDOUT; |
572 | goto out; | |
8fee476b | 573 | } |
7435bb79 | 574 | } while (R1_CURRENT_STATE(status) == R1_STATE_PRG); |
ef0b27d4 | 575 | |
ed16f58d | 576 | err = mmc_switch_status_error(host, status); |
c6dbab9c AH |
577 | out: |
578 | mmc_retune_release(host); | |
ef0b27d4 | 579 | |
c6dbab9c | 580 | return err; |
da7fbe58 | 581 | } |
950d56ac JC |
582 | |
583 | int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, | |
584 | unsigned int timeout_ms) | |
585 | { | |
4509f847 UH |
586 | return __mmc_switch(card, set, index, value, timeout_ms, true, true, |
587 | false); | |
950d56ac | 588 | } |
d3a8d95d | 589 | EXPORT_SYMBOL_GPL(mmc_switch); |
da7fbe58 | 590 | |
fe5afb13 | 591 | int mmc_send_tuning(struct mmc_host *host) |
996903de MC |
592 | { |
593 | struct mmc_request mrq = {NULL}; | |
594 | struct mmc_command cmd = {0}; | |
595 | struct mmc_data data = {0}; | |
596 | struct scatterlist sg; | |
fe5afb13 | 597 | struct mmc_ios *ios = &host->ios; |
996903de MC |
598 | const u8 *tuning_block_pattern; |
599 | int size, err = 0; | |
600 | u8 *data_buf; | |
601 | u32 opcode; | |
602 | ||
603 | if (ios->bus_width == MMC_BUS_WIDTH_8) { | |
604 | tuning_block_pattern = tuning_blk_pattern_8bit; | |
605 | size = sizeof(tuning_blk_pattern_8bit); | |
606 | opcode = MMC_SEND_TUNING_BLOCK_HS200; | |
607 | } else if (ios->bus_width == MMC_BUS_WIDTH_4) { | |
608 | tuning_block_pattern = tuning_blk_pattern_4bit; | |
609 | size = sizeof(tuning_blk_pattern_4bit); | |
610 | opcode = MMC_SEND_TUNING_BLOCK; | |
611 | } else | |
612 | return -EINVAL; | |
613 | ||
614 | data_buf = kzalloc(size, GFP_KERNEL); | |
615 | if (!data_buf) | |
616 | return -ENOMEM; | |
617 | ||
618 | mrq.cmd = &cmd; | |
619 | mrq.data = &data; | |
620 | ||
621 | cmd.opcode = opcode; | |
622 | cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC; | |
623 | ||
624 | data.blksz = size; | |
625 | data.blocks = 1; | |
626 | data.flags = MMC_DATA_READ; | |
627 | ||
628 | /* | |
629 | * According to the tuning specs, Tuning process | |
630 | * is normally shorter 40 executions of CMD19, | |
631 | * and timeout value should be shorter than 150 ms | |
632 | */ | |
633 | data.timeout_ns = 150 * NSEC_PER_MSEC; | |
634 | ||
635 | data.sg = &sg; | |
636 | data.sg_len = 1; | |
637 | sg_init_one(&sg, data_buf, size); | |
638 | ||
fe5afb13 | 639 | mmc_wait_for_req(host, &mrq); |
996903de MC |
640 | |
641 | if (cmd.error) { | |
642 | err = cmd.error; | |
643 | goto out; | |
644 | } | |
645 | ||
646 | if (data.error) { | |
647 | err = data.error; | |
648 | goto out; | |
649 | } | |
650 | ||
651 | if (memcmp(data_buf, tuning_block_pattern, size)) | |
652 | err = -EIO; | |
653 | ||
654 | out: | |
655 | kfree(data_buf); | |
656 | return err; | |
657 | } | |
658 | EXPORT_SYMBOL_GPL(mmc_send_tuning); | |
659 | ||
22113efd AL |
660 | static int |
661 | mmc_send_bus_test(struct mmc_card *card, struct mmc_host *host, u8 opcode, | |
662 | u8 len) | |
663 | { | |
ad5fd972 | 664 | struct mmc_request mrq = {NULL}; |
1278dba1 | 665 | struct mmc_command cmd = {0}; |
a61ad2b4 | 666 | struct mmc_data data = {0}; |
22113efd AL |
667 | struct scatterlist sg; |
668 | u8 *data_buf; | |
669 | u8 *test_buf; | |
670 | int i, err; | |
671 | static u8 testdata_8bit[8] = { 0x55, 0xaa, 0, 0, 0, 0, 0, 0 }; | |
672 | static u8 testdata_4bit[4] = { 0x5a, 0, 0, 0 }; | |
673 | ||
674 | /* dma onto stack is unsafe/nonportable, but callers to this | |
675 | * routine normally provide temporary on-stack buffers ... | |
676 | */ | |
677 | data_buf = kmalloc(len, GFP_KERNEL); | |
678 | if (!data_buf) | |
679 | return -ENOMEM; | |
680 | ||
681 | if (len == 8) | |
682 | test_buf = testdata_8bit; | |
683 | else if (len == 4) | |
684 | test_buf = testdata_4bit; | |
685 | else { | |
a3c76eb9 | 686 | pr_err("%s: Invalid bus_width %d\n", |
22113efd AL |
687 | mmc_hostname(host), len); |
688 | kfree(data_buf); | |
689 | return -EINVAL; | |
690 | } | |
691 | ||
692 | if (opcode == MMC_BUS_TEST_W) | |
693 | memcpy(data_buf, test_buf, len); | |
694 | ||
22113efd AL |
695 | mrq.cmd = &cmd; |
696 | mrq.data = &data; | |
697 | cmd.opcode = opcode; | |
698 | cmd.arg = 0; | |
699 | ||
700 | /* NOTE HACK: the MMC_RSP_SPI_R1 is always correct here, but we | |
701 | * rely on callers to never use this with "native" calls for reading | |
702 | * CSD or CID. Native versions of those commands use the R2 type, | |
703 | * not R1 plus a data block. | |
704 | */ | |
705 | cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_ADTC; | |
706 | ||
707 | data.blksz = len; | |
708 | data.blocks = 1; | |
709 | if (opcode == MMC_BUS_TEST_R) | |
710 | data.flags = MMC_DATA_READ; | |
711 | else | |
712 | data.flags = MMC_DATA_WRITE; | |
713 | ||
714 | data.sg = &sg; | |
715 | data.sg_len = 1; | |
84532e33 | 716 | mmc_set_data_timeout(&data, card); |
22113efd AL |
717 | sg_init_one(&sg, data_buf, len); |
718 | mmc_wait_for_req(host, &mrq); | |
719 | err = 0; | |
720 | if (opcode == MMC_BUS_TEST_R) { | |
721 | for (i = 0; i < len / 4; i++) | |
722 | if ((test_buf[i] ^ data_buf[i]) != 0xff) { | |
723 | err = -EIO; | |
724 | break; | |
725 | } | |
726 | } | |
727 | kfree(data_buf); | |
728 | ||
729 | if (cmd.error) | |
730 | return cmd.error; | |
731 | if (data.error) | |
732 | return data.error; | |
733 | ||
734 | return err; | |
735 | } | |
736 | ||
737 | int mmc_bus_test(struct mmc_card *card, u8 bus_width) | |
738 | { | |
739 | int err, width; | |
740 | ||
741 | if (bus_width == MMC_BUS_WIDTH_8) | |
742 | width = 8; | |
743 | else if (bus_width == MMC_BUS_WIDTH_4) | |
744 | width = 4; | |
745 | else if (bus_width == MMC_BUS_WIDTH_1) | |
746 | return 0; /* no need for test */ | |
747 | else | |
748 | return -EINVAL; | |
749 | ||
750 | /* | |
751 | * Ignore errors from BUS_TEST_W. BUS_TEST_R will fail if there | |
752 | * is a problem. This improves chances that the test will work. | |
753 | */ | |
754 | mmc_send_bus_test(card, card->host, MMC_BUS_TEST_W, width); | |
755 | err = mmc_send_bus_test(card, card->host, MMC_BUS_TEST_R, width); | |
756 | return err; | |
757 | } | |
eb0d8f13 JC |
758 | |
759 | int mmc_send_hpi_cmd(struct mmc_card *card, u32 *status) | |
760 | { | |
761 | struct mmc_command cmd = {0}; | |
762 | unsigned int opcode; | |
eb0d8f13 JC |
763 | int err; |
764 | ||
2378975b | 765 | if (!card->ext_csd.hpi) { |
6606110d JP |
766 | pr_warn("%s: Card didn't support HPI command\n", |
767 | mmc_hostname(card->host)); | |
2378975b JC |
768 | return -EINVAL; |
769 | } | |
770 | ||
eb0d8f13 JC |
771 | opcode = card->ext_csd.hpi_cmd; |
772 | if (opcode == MMC_STOP_TRANSMISSION) | |
2378975b | 773 | cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; |
eb0d8f13 | 774 | else if (opcode == MMC_SEND_STATUS) |
2378975b | 775 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; |
eb0d8f13 JC |
776 | |
777 | cmd.opcode = opcode; | |
778 | cmd.arg = card->rca << 16 | 1; | |
eb0d8f13 JC |
779 | |
780 | err = mmc_wait_for_cmd(card->host, &cmd, 0); | |
781 | if (err) { | |
782 | pr_warn("%s: error %d interrupting operation. " | |
783 | "HPI command response %#x\n", mmc_hostname(card->host), | |
784 | err, cmd.resp[0]); | |
785 | return err; | |
786 | } | |
787 | if (status) | |
788 | *status = cmd.resp[0]; | |
789 | ||
790 | return 0; | |
791 | } | |
148bcab2 UH |
792 | |
793 | int mmc_can_ext_csd(struct mmc_card *card) | |
794 | { | |
795 | return (card && card->csd.mmca_vsn > CSD_SPEC_VER_3); | |
796 | } |