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272cc70b AF |
1 | /* |
2 | * Copyright 2008, Freescale Semiconductor, Inc | |
3 | * Andy Fleming | |
4 | * | |
5 | * Based vaguely on the Linux code | |
6 | * | |
7 | * See file CREDITS for list of people who contributed to this | |
8 | * project. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License as | |
12 | * published by the Free Software Foundation; either version 2 of | |
13 | * the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
23 | * MA 02111-1307 USA | |
24 | */ | |
25 | ||
26 | #include <config.h> | |
27 | #include <common.h> | |
28 | #include <command.h> | |
29 | #include <mmc.h> | |
30 | #include <part.h> | |
31 | #include <malloc.h> | |
32 | #include <linux/list.h> | |
33 | #include <mmc.h> | |
9b1f942c | 34 | #include <div64.h> |
272cc70b AF |
35 | |
36 | static struct list_head mmc_devices; | |
37 | static int cur_dev_num = -1; | |
38 | ||
11fdade2 SB |
39 | int __board_mmc_getcd(u8 *cd, struct mmc *mmc) { |
40 | return -1; | |
41 | } | |
42 | ||
43 | int board_mmc_getcd(u8 *cd, struct mmc *mmc)__attribute__((weak, | |
44 | alias("__board_mmc_getcd"))); | |
45 | ||
272cc70b AF |
46 | int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) |
47 | { | |
48 | return mmc->send_cmd(mmc, cmd, data); | |
49 | } | |
50 | ||
51 | int mmc_set_blocklen(struct mmc *mmc, int len) | |
52 | { | |
53 | struct mmc_cmd cmd; | |
54 | ||
55 | cmd.cmdidx = MMC_CMD_SET_BLOCKLEN; | |
56 | cmd.resp_type = MMC_RSP_R1; | |
57 | cmd.cmdarg = len; | |
58 | cmd.flags = 0; | |
59 | ||
60 | return mmc_send_cmd(mmc, &cmd, NULL); | |
61 | } | |
62 | ||
63 | struct mmc *find_mmc_device(int dev_num) | |
64 | { | |
65 | struct mmc *m; | |
66 | struct list_head *entry; | |
67 | ||
68 | list_for_each(entry, &mmc_devices) { | |
69 | m = list_entry(entry, struct mmc, link); | |
70 | ||
71 | if (m->block_dev.dev == dev_num) | |
72 | return m; | |
73 | } | |
74 | ||
75 | printf("MMC Device %d not found\n", dev_num); | |
76 | ||
77 | return NULL; | |
78 | } | |
79 | ||
80 | static ulong | |
0158126e | 81 | mmc_write_blocks(struct mmc *mmc, ulong start, lbaint_t blkcnt, const void*src) |
272cc70b AF |
82 | { |
83 | struct mmc_cmd cmd; | |
84 | struct mmc_data data; | |
272cc70b | 85 | |
d2bf29e3 | 86 | if ((start + blkcnt) > mmc->block_dev.lba) { |
def412b6 | 87 | printf("MMC: block number 0x%lx exceeds max(0x%lx)\n", |
d2bf29e3 LW |
88 | start + blkcnt, mmc->block_dev.lba); |
89 | return 0; | |
90 | } | |
272cc70b AF |
91 | |
92 | if (blkcnt > 1) | |
93 | cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK; | |
94 | else | |
95 | cmd.cmdidx = MMC_CMD_WRITE_SINGLE_BLOCK; | |
96 | ||
97 | if (mmc->high_capacity) | |
98 | cmd.cmdarg = start; | |
99 | else | |
def412b6 | 100 | cmd.cmdarg = start * mmc->write_bl_len; |
272cc70b AF |
101 | |
102 | cmd.resp_type = MMC_RSP_R1; | |
103 | cmd.flags = 0; | |
104 | ||
105 | data.src = src; | |
106 | data.blocks = blkcnt; | |
def412b6 | 107 | data.blocksize = mmc->write_bl_len; |
272cc70b AF |
108 | data.flags = MMC_DATA_WRITE; |
109 | ||
def412b6 SS |
110 | if (mmc_send_cmd(mmc, &cmd, &data)) { |
111 | printf("mmc write failed\n"); | |
112 | return 0; | |
272cc70b AF |
113 | } |
114 | ||
115 | if (blkcnt > 1) { | |
116 | cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION; | |
117 | cmd.cmdarg = 0; | |
118 | cmd.resp_type = MMC_RSP_R1b; | |
119 | cmd.flags = 0; | |
def412b6 SS |
120 | if (mmc_send_cmd(mmc, &cmd, NULL)) { |
121 | printf("mmc fail to send stop cmd\n"); | |
122 | return 0; | |
0158126e | 123 | } |
272cc70b AF |
124 | } |
125 | ||
126 | return blkcnt; | |
127 | } | |
128 | ||
0158126e LW |
129 | static ulong |
130 | mmc_bwrite(int dev_num, ulong start, lbaint_t blkcnt, const void*src) | |
131 | { | |
0158126e LW |
132 | lbaint_t cur, blocks_todo = blkcnt; |
133 | ||
def412b6 | 134 | struct mmc *mmc = find_mmc_device(dev_num); |
0158126e | 135 | if (!mmc) |
def412b6 | 136 | return 0; |
0158126e | 137 | |
def412b6 SS |
138 | if (mmc_set_blocklen(mmc, mmc->write_bl_len)) |
139 | return 0; | |
0158126e LW |
140 | |
141 | do { | |
142 | /* | |
143 | * The 65535 constraint comes from some hardware has | |
144 | * only 16 bit width block number counter | |
145 | */ | |
146 | cur = (blocks_todo > 65535) ? 65535 : blocks_todo; | |
147 | if(mmc_write_blocks(mmc, start, cur, src) != cur) | |
def412b6 | 148 | return 0; |
0158126e LW |
149 | blocks_todo -= cur; |
150 | start += cur; | |
151 | src += cur * mmc->write_bl_len; | |
152 | } while (blocks_todo > 0); | |
153 | ||
154 | return blkcnt; | |
155 | } | |
156 | ||
4a1a06bc | 157 | int mmc_read_blocks(struct mmc *mmc, void *dst, ulong start, lbaint_t blkcnt) |
272cc70b AF |
158 | { |
159 | struct mmc_cmd cmd; | |
160 | struct mmc_data data; | |
161 | ||
4a1a06bc AS |
162 | if (blkcnt > 1) |
163 | cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK; | |
164 | else | |
165 | cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK; | |
272cc70b AF |
166 | |
167 | if (mmc->high_capacity) | |
4a1a06bc | 168 | cmd.cmdarg = start; |
272cc70b | 169 | else |
4a1a06bc | 170 | cmd.cmdarg = start * mmc->read_bl_len; |
272cc70b AF |
171 | |
172 | cmd.resp_type = MMC_RSP_R1; | |
173 | cmd.flags = 0; | |
174 | ||
175 | data.dest = dst; | |
4a1a06bc | 176 | data.blocks = blkcnt; |
272cc70b AF |
177 | data.blocksize = mmc->read_bl_len; |
178 | data.flags = MMC_DATA_READ; | |
179 | ||
4a1a06bc AS |
180 | if (mmc_send_cmd(mmc, &cmd, &data)) |
181 | return 0; | |
272cc70b | 182 | |
4a1a06bc AS |
183 | if (blkcnt > 1) { |
184 | cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION; | |
185 | cmd.cmdarg = 0; | |
186 | cmd.resp_type = MMC_RSP_R1b; | |
187 | cmd.flags = 0; | |
188 | if (mmc_send_cmd(mmc, &cmd, NULL)) { | |
189 | printf("mmc fail to send stop cmd\n"); | |
190 | return 0; | |
191 | } | |
272cc70b AF |
192 | } |
193 | ||
4a1a06bc | 194 | return blkcnt; |
272cc70b AF |
195 | } |
196 | ||
197 | static ulong mmc_bread(int dev_num, ulong start, lbaint_t blkcnt, void *dst) | |
198 | { | |
4a1a06bc AS |
199 | lbaint_t cur, blocks_todo = blkcnt; |
200 | ||
201 | if (blkcnt == 0) | |
202 | return 0; | |
272cc70b | 203 | |
4a1a06bc | 204 | struct mmc *mmc = find_mmc_device(dev_num); |
272cc70b AF |
205 | if (!mmc) |
206 | return 0; | |
207 | ||
d2bf29e3 | 208 | if ((start + blkcnt) > mmc->block_dev.lba) { |
4a1a06bc | 209 | printf("MMC: block number 0x%lx exceeds max(0x%lx)\n", |
d2bf29e3 LW |
210 | start + blkcnt, mmc->block_dev.lba); |
211 | return 0; | |
212 | } | |
272cc70b | 213 | |
4a1a06bc | 214 | if (mmc_set_blocklen(mmc, mmc->read_bl_len)) |
272cc70b | 215 | return 0; |
272cc70b | 216 | |
4a1a06bc AS |
217 | do { |
218 | /* | |
219 | * The 65535 constraint comes from some hardware has | |
220 | * only 16 bit width block number counter | |
221 | */ | |
222 | cur = (blocks_todo > 65535) ? 65535 : blocks_todo; | |
223 | if(mmc_read_blocks(mmc, dst, start, cur) != cur) | |
224 | return 0; | |
225 | blocks_todo -= cur; | |
226 | start += cur; | |
227 | dst += cur * mmc->read_bl_len; | |
228 | } while (blocks_todo > 0); | |
272cc70b AF |
229 | |
230 | return blkcnt; | |
231 | } | |
232 | ||
233 | int mmc_go_idle(struct mmc* mmc) | |
234 | { | |
235 | struct mmc_cmd cmd; | |
236 | int err; | |
237 | ||
238 | udelay(1000); | |
239 | ||
240 | cmd.cmdidx = MMC_CMD_GO_IDLE_STATE; | |
241 | cmd.cmdarg = 0; | |
242 | cmd.resp_type = MMC_RSP_NONE; | |
243 | cmd.flags = 0; | |
244 | ||
245 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
246 | ||
247 | if (err) | |
248 | return err; | |
249 | ||
250 | udelay(2000); | |
251 | ||
252 | return 0; | |
253 | } | |
254 | ||
255 | int | |
256 | sd_send_op_cond(struct mmc *mmc) | |
257 | { | |
258 | int timeout = 1000; | |
259 | int err; | |
260 | struct mmc_cmd cmd; | |
261 | ||
262 | do { | |
263 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
264 | cmd.resp_type = MMC_RSP_R1; | |
265 | cmd.cmdarg = 0; | |
266 | cmd.flags = 0; | |
267 | ||
268 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
269 | ||
270 | if (err) | |
271 | return err; | |
272 | ||
273 | cmd.cmdidx = SD_CMD_APP_SEND_OP_COND; | |
274 | cmd.resp_type = MMC_RSP_R3; | |
250de12b SB |
275 | |
276 | /* | |
277 | * Most cards do not answer if some reserved bits | |
278 | * in the ocr are set. However, Some controller | |
279 | * can set bit 7 (reserved for low voltages), but | |
280 | * how to manage low voltages SD card is not yet | |
281 | * specified. | |
282 | */ | |
283 | cmd.cmdarg = mmc->voltages & 0xff8000; | |
272cc70b AF |
284 | |
285 | if (mmc->version == SD_VERSION_2) | |
286 | cmd.cmdarg |= OCR_HCS; | |
287 | ||
288 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
289 | ||
290 | if (err) | |
291 | return err; | |
292 | ||
293 | udelay(1000); | |
294 | } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--); | |
295 | ||
296 | if (timeout <= 0) | |
297 | return UNUSABLE_ERR; | |
298 | ||
299 | if (mmc->version != SD_VERSION_2) | |
300 | mmc->version = SD_VERSION_1_0; | |
301 | ||
998be3dd | 302 | mmc->ocr = cmd.response[0]; |
272cc70b AF |
303 | |
304 | mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); | |
305 | mmc->rca = 0; | |
306 | ||
307 | return 0; | |
308 | } | |
309 | ||
310 | int mmc_send_op_cond(struct mmc *mmc) | |
311 | { | |
312 | int timeout = 1000; | |
313 | struct mmc_cmd cmd; | |
314 | int err; | |
315 | ||
316 | /* Some cards seem to need this */ | |
317 | mmc_go_idle(mmc); | |
318 | ||
319 | do { | |
320 | cmd.cmdidx = MMC_CMD_SEND_OP_COND; | |
321 | cmd.resp_type = MMC_RSP_R3; | |
322 | cmd.cmdarg = OCR_HCS | mmc->voltages; | |
323 | cmd.flags = 0; | |
324 | ||
325 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
326 | ||
327 | if (err) | |
328 | return err; | |
329 | ||
330 | udelay(1000); | |
331 | } while (!(cmd.response[0] & OCR_BUSY) && timeout--); | |
332 | ||
333 | if (timeout <= 0) | |
334 | return UNUSABLE_ERR; | |
335 | ||
336 | mmc->version = MMC_VERSION_UNKNOWN; | |
998be3dd | 337 | mmc->ocr = cmd.response[0]; |
272cc70b AF |
338 | |
339 | mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); | |
340 | mmc->rca = 0; | |
341 | ||
342 | return 0; | |
343 | } | |
344 | ||
345 | ||
346 | int mmc_send_ext_csd(struct mmc *mmc, char *ext_csd) | |
347 | { | |
348 | struct mmc_cmd cmd; | |
349 | struct mmc_data data; | |
350 | int err; | |
351 | ||
352 | /* Get the Card Status Register */ | |
353 | cmd.cmdidx = MMC_CMD_SEND_EXT_CSD; | |
354 | cmd.resp_type = MMC_RSP_R1; | |
355 | cmd.cmdarg = 0; | |
356 | cmd.flags = 0; | |
357 | ||
358 | data.dest = ext_csd; | |
359 | data.blocks = 1; | |
360 | data.blocksize = 512; | |
361 | data.flags = MMC_DATA_READ; | |
362 | ||
363 | err = mmc_send_cmd(mmc, &cmd, &data); | |
364 | ||
365 | return err; | |
366 | } | |
367 | ||
368 | ||
369 | int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value) | |
370 | { | |
371 | struct mmc_cmd cmd; | |
372 | ||
373 | cmd.cmdidx = MMC_CMD_SWITCH; | |
374 | cmd.resp_type = MMC_RSP_R1b; | |
375 | cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | | |
376 | (index << 16) | | |
377 | (value << 8); | |
378 | cmd.flags = 0; | |
379 | ||
380 | return mmc_send_cmd(mmc, &cmd, NULL); | |
381 | } | |
382 | ||
383 | int mmc_change_freq(struct mmc *mmc) | |
384 | { | |
385 | char ext_csd[512]; | |
386 | char cardtype; | |
387 | int err; | |
388 | ||
389 | mmc->card_caps = 0; | |
390 | ||
391 | /* Only version 4 supports high-speed */ | |
392 | if (mmc->version < MMC_VERSION_4) | |
393 | return 0; | |
394 | ||
395 | mmc->card_caps |= MMC_MODE_4BIT; | |
396 | ||
397 | err = mmc_send_ext_csd(mmc, ext_csd); | |
398 | ||
399 | if (err) | |
400 | return err; | |
401 | ||
402 | if (ext_csd[212] || ext_csd[213] || ext_csd[214] || ext_csd[215]) | |
403 | mmc->high_capacity = 1; | |
404 | ||
405 | cardtype = ext_csd[196] & 0xf; | |
406 | ||
407 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1); | |
408 | ||
409 | if (err) | |
410 | return err; | |
411 | ||
412 | /* Now check to see that it worked */ | |
413 | err = mmc_send_ext_csd(mmc, ext_csd); | |
414 | ||
415 | if (err) | |
416 | return err; | |
417 | ||
418 | /* No high-speed support */ | |
419 | if (!ext_csd[185]) | |
420 | return 0; | |
421 | ||
422 | /* High Speed is set, there are two types: 52MHz and 26MHz */ | |
423 | if (cardtype & MMC_HS_52MHZ) | |
424 | mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS; | |
425 | else | |
426 | mmc->card_caps |= MMC_MODE_HS; | |
427 | ||
428 | return 0; | |
429 | } | |
430 | ||
431 | int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp) | |
432 | { | |
433 | struct mmc_cmd cmd; | |
434 | struct mmc_data data; | |
435 | ||
436 | /* Switch the frequency */ | |
437 | cmd.cmdidx = SD_CMD_SWITCH_FUNC; | |
438 | cmd.resp_type = MMC_RSP_R1; | |
439 | cmd.cmdarg = (mode << 31) | 0xffffff; | |
440 | cmd.cmdarg &= ~(0xf << (group * 4)); | |
441 | cmd.cmdarg |= value << (group * 4); | |
442 | cmd.flags = 0; | |
443 | ||
444 | data.dest = (char *)resp; | |
445 | data.blocksize = 64; | |
446 | data.blocks = 1; | |
447 | data.flags = MMC_DATA_READ; | |
448 | ||
449 | return mmc_send_cmd(mmc, &cmd, &data); | |
450 | } | |
451 | ||
452 | ||
453 | int sd_change_freq(struct mmc *mmc) | |
454 | { | |
455 | int err; | |
456 | struct mmc_cmd cmd; | |
457 | uint scr[2]; | |
458 | uint switch_status[16]; | |
459 | struct mmc_data data; | |
460 | int timeout; | |
461 | ||
462 | mmc->card_caps = 0; | |
463 | ||
464 | /* Read the SCR to find out if this card supports higher speeds */ | |
465 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
466 | cmd.resp_type = MMC_RSP_R1; | |
467 | cmd.cmdarg = mmc->rca << 16; | |
468 | cmd.flags = 0; | |
469 | ||
470 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
471 | ||
472 | if (err) | |
473 | return err; | |
474 | ||
475 | cmd.cmdidx = SD_CMD_APP_SEND_SCR; | |
476 | cmd.resp_type = MMC_RSP_R1; | |
477 | cmd.cmdarg = 0; | |
478 | cmd.flags = 0; | |
479 | ||
480 | timeout = 3; | |
481 | ||
482 | retry_scr: | |
483 | data.dest = (char *)&scr; | |
484 | data.blocksize = 8; | |
485 | data.blocks = 1; | |
486 | data.flags = MMC_DATA_READ; | |
487 | ||
488 | err = mmc_send_cmd(mmc, &cmd, &data); | |
489 | ||
490 | if (err) { | |
491 | if (timeout--) | |
492 | goto retry_scr; | |
493 | ||
494 | return err; | |
495 | } | |
496 | ||
4e3d89ba YK |
497 | mmc->scr[0] = __be32_to_cpu(scr[0]); |
498 | mmc->scr[1] = __be32_to_cpu(scr[1]); | |
272cc70b AF |
499 | |
500 | switch ((mmc->scr[0] >> 24) & 0xf) { | |
501 | case 0: | |
502 | mmc->version = SD_VERSION_1_0; | |
503 | break; | |
504 | case 1: | |
505 | mmc->version = SD_VERSION_1_10; | |
506 | break; | |
507 | case 2: | |
508 | mmc->version = SD_VERSION_2; | |
509 | break; | |
510 | default: | |
511 | mmc->version = SD_VERSION_1_0; | |
512 | break; | |
513 | } | |
514 | ||
515 | /* Version 1.0 doesn't support switching */ | |
516 | if (mmc->version == SD_VERSION_1_0) | |
517 | return 0; | |
518 | ||
519 | timeout = 4; | |
520 | while (timeout--) { | |
521 | err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1, | |
522 | (u8 *)&switch_status); | |
523 | ||
524 | if (err) | |
525 | return err; | |
526 | ||
527 | /* The high-speed function is busy. Try again */ | |
4e3d89ba | 528 | if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY)) |
272cc70b AF |
529 | break; |
530 | } | |
531 | ||
532 | if (mmc->scr[0] & SD_DATA_4BIT) | |
533 | mmc->card_caps |= MMC_MODE_4BIT; | |
534 | ||
535 | /* If high-speed isn't supported, we return */ | |
4e3d89ba | 536 | if (!(__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED)) |
272cc70b AF |
537 | return 0; |
538 | ||
539 | err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)&switch_status); | |
540 | ||
541 | if (err) | |
542 | return err; | |
543 | ||
4e3d89ba | 544 | if ((__be32_to_cpu(switch_status[4]) & 0x0f000000) == 0x01000000) |
272cc70b AF |
545 | mmc->card_caps |= MMC_MODE_HS; |
546 | ||
547 | return 0; | |
548 | } | |
549 | ||
550 | /* frequency bases */ | |
551 | /* divided by 10 to be nice to platforms without floating point */ | |
552 | int fbase[] = { | |
553 | 10000, | |
554 | 100000, | |
555 | 1000000, | |
556 | 10000000, | |
557 | }; | |
558 | ||
559 | /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice | |
560 | * to platforms without floating point. | |
561 | */ | |
562 | int multipliers[] = { | |
563 | 0, /* reserved */ | |
564 | 10, | |
565 | 12, | |
566 | 13, | |
567 | 15, | |
568 | 20, | |
569 | 25, | |
570 | 30, | |
571 | 35, | |
572 | 40, | |
573 | 45, | |
574 | 50, | |
575 | 55, | |
576 | 60, | |
577 | 70, | |
578 | 80, | |
579 | }; | |
580 | ||
581 | void mmc_set_ios(struct mmc *mmc) | |
582 | { | |
583 | mmc->set_ios(mmc); | |
584 | } | |
585 | ||
586 | void mmc_set_clock(struct mmc *mmc, uint clock) | |
587 | { | |
588 | if (clock > mmc->f_max) | |
589 | clock = mmc->f_max; | |
590 | ||
591 | if (clock < mmc->f_min) | |
592 | clock = mmc->f_min; | |
593 | ||
594 | mmc->clock = clock; | |
595 | ||
596 | mmc_set_ios(mmc); | |
597 | } | |
598 | ||
599 | void mmc_set_bus_width(struct mmc *mmc, uint width) | |
600 | { | |
601 | mmc->bus_width = width; | |
602 | ||
603 | mmc_set_ios(mmc); | |
604 | } | |
605 | ||
606 | int mmc_startup(struct mmc *mmc) | |
607 | { | |
608 | int err; | |
609 | uint mult, freq; | |
610 | u64 cmult, csize; | |
611 | struct mmc_cmd cmd; | |
d23e2c09 | 612 | char ext_csd[512]; |
272cc70b AF |
613 | |
614 | /* Put the Card in Identify Mode */ | |
615 | cmd.cmdidx = MMC_CMD_ALL_SEND_CID; | |
616 | cmd.resp_type = MMC_RSP_R2; | |
617 | cmd.cmdarg = 0; | |
618 | cmd.flags = 0; | |
619 | ||
620 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
621 | ||
622 | if (err) | |
623 | return err; | |
624 | ||
625 | memcpy(mmc->cid, cmd.response, 16); | |
626 | ||
627 | /* | |
628 | * For MMC cards, set the Relative Address. | |
629 | * For SD cards, get the Relatvie Address. | |
630 | * This also puts the cards into Standby State | |
631 | */ | |
632 | cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR; | |
633 | cmd.cmdarg = mmc->rca << 16; | |
634 | cmd.resp_type = MMC_RSP_R6; | |
635 | cmd.flags = 0; | |
636 | ||
637 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
638 | ||
639 | if (err) | |
640 | return err; | |
641 | ||
642 | if (IS_SD(mmc)) | |
998be3dd | 643 | mmc->rca = (cmd.response[0] >> 16) & 0xffff; |
272cc70b AF |
644 | |
645 | /* Get the Card-Specific Data */ | |
646 | cmd.cmdidx = MMC_CMD_SEND_CSD; | |
647 | cmd.resp_type = MMC_RSP_R2; | |
648 | cmd.cmdarg = mmc->rca << 16; | |
649 | cmd.flags = 0; | |
650 | ||
651 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
652 | ||
653 | if (err) | |
654 | return err; | |
655 | ||
998be3dd RV |
656 | mmc->csd[0] = cmd.response[0]; |
657 | mmc->csd[1] = cmd.response[1]; | |
658 | mmc->csd[2] = cmd.response[2]; | |
659 | mmc->csd[3] = cmd.response[3]; | |
272cc70b AF |
660 | |
661 | if (mmc->version == MMC_VERSION_UNKNOWN) { | |
0b453ffe | 662 | int version = (cmd.response[0] >> 26) & 0xf; |
272cc70b AF |
663 | |
664 | switch (version) { | |
665 | case 0: | |
666 | mmc->version = MMC_VERSION_1_2; | |
667 | break; | |
668 | case 1: | |
669 | mmc->version = MMC_VERSION_1_4; | |
670 | break; | |
671 | case 2: | |
672 | mmc->version = MMC_VERSION_2_2; | |
673 | break; | |
674 | case 3: | |
675 | mmc->version = MMC_VERSION_3; | |
676 | break; | |
677 | case 4: | |
678 | mmc->version = MMC_VERSION_4; | |
679 | break; | |
680 | default: | |
681 | mmc->version = MMC_VERSION_1_2; | |
682 | break; | |
683 | } | |
684 | } | |
685 | ||
686 | /* divide frequency by 10, since the mults are 10x bigger */ | |
0b453ffe RV |
687 | freq = fbase[(cmd.response[0] & 0x7)]; |
688 | mult = multipliers[((cmd.response[0] >> 3) & 0xf)]; | |
272cc70b AF |
689 | |
690 | mmc->tran_speed = freq * mult; | |
691 | ||
998be3dd | 692 | mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf); |
272cc70b AF |
693 | |
694 | if (IS_SD(mmc)) | |
695 | mmc->write_bl_len = mmc->read_bl_len; | |
696 | else | |
998be3dd | 697 | mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf); |
272cc70b AF |
698 | |
699 | if (mmc->high_capacity) { | |
700 | csize = (mmc->csd[1] & 0x3f) << 16 | |
701 | | (mmc->csd[2] & 0xffff0000) >> 16; | |
702 | cmult = 8; | |
703 | } else { | |
704 | csize = (mmc->csd[1] & 0x3ff) << 2 | |
705 | | (mmc->csd[2] & 0xc0000000) >> 30; | |
706 | cmult = (mmc->csd[2] & 0x00038000) >> 15; | |
707 | } | |
708 | ||
709 | mmc->capacity = (csize + 1) << (cmult + 2); | |
710 | mmc->capacity *= mmc->read_bl_len; | |
711 | ||
712 | if (mmc->read_bl_len > 512) | |
713 | mmc->read_bl_len = 512; | |
714 | ||
715 | if (mmc->write_bl_len > 512) | |
716 | mmc->write_bl_len = 512; | |
717 | ||
718 | /* Select the card, and put it into Transfer Mode */ | |
719 | cmd.cmdidx = MMC_CMD_SELECT_CARD; | |
720 | cmd.resp_type = MMC_RSP_R1b; | |
721 | cmd.cmdarg = mmc->rca << 16; | |
722 | cmd.flags = 0; | |
723 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
724 | ||
725 | if (err) | |
726 | return err; | |
727 | ||
d23e2c09 SG |
728 | if (!IS_SD(mmc) && (mmc->version >= MMC_VERSION_4)) { |
729 | /* check ext_csd version and capacity */ | |
730 | err = mmc_send_ext_csd(mmc, ext_csd); | |
731 | if (!err & (ext_csd[192] >= 2)) { | |
732 | mmc->capacity = ext_csd[212] << 0 | ext_csd[213] << 8 | | |
733 | ext_csd[214] << 16 | ext_csd[215] << 24; | |
734 | mmc->capacity *= 512; | |
735 | } | |
736 | } | |
737 | ||
272cc70b AF |
738 | if (IS_SD(mmc)) |
739 | err = sd_change_freq(mmc); | |
740 | else | |
741 | err = mmc_change_freq(mmc); | |
742 | ||
743 | if (err) | |
744 | return err; | |
745 | ||
746 | /* Restrict card's capabilities by what the host can do */ | |
747 | mmc->card_caps &= mmc->host_caps; | |
748 | ||
749 | if (IS_SD(mmc)) { | |
750 | if (mmc->card_caps & MMC_MODE_4BIT) { | |
751 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
752 | cmd.resp_type = MMC_RSP_R1; | |
753 | cmd.cmdarg = mmc->rca << 16; | |
754 | cmd.flags = 0; | |
755 | ||
756 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
757 | if (err) | |
758 | return err; | |
759 | ||
760 | cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH; | |
761 | cmd.resp_type = MMC_RSP_R1; | |
762 | cmd.cmdarg = 2; | |
763 | cmd.flags = 0; | |
764 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
765 | if (err) | |
766 | return err; | |
767 | ||
768 | mmc_set_bus_width(mmc, 4); | |
769 | } | |
770 | ||
771 | if (mmc->card_caps & MMC_MODE_HS) | |
772 | mmc_set_clock(mmc, 50000000); | |
773 | else | |
774 | mmc_set_clock(mmc, 25000000); | |
775 | } else { | |
776 | if (mmc->card_caps & MMC_MODE_4BIT) { | |
777 | /* Set the card to use 4 bit*/ | |
778 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
779 | EXT_CSD_BUS_WIDTH, | |
780 | EXT_CSD_BUS_WIDTH_4); | |
781 | ||
782 | if (err) | |
783 | return err; | |
784 | ||
785 | mmc_set_bus_width(mmc, 4); | |
786 | } else if (mmc->card_caps & MMC_MODE_8BIT) { | |
787 | /* Set the card to use 8 bit*/ | |
788 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
789 | EXT_CSD_BUS_WIDTH, | |
790 | EXT_CSD_BUS_WIDTH_8); | |
791 | ||
792 | if (err) | |
793 | return err; | |
794 | ||
795 | mmc_set_bus_width(mmc, 8); | |
796 | } | |
797 | ||
798 | if (mmc->card_caps & MMC_MODE_HS) { | |
799 | if (mmc->card_caps & MMC_MODE_HS_52MHz) | |
800 | mmc_set_clock(mmc, 52000000); | |
801 | else | |
802 | mmc_set_clock(mmc, 26000000); | |
803 | } else | |
804 | mmc_set_clock(mmc, 20000000); | |
805 | } | |
806 | ||
807 | /* fill in device description */ | |
808 | mmc->block_dev.lun = 0; | |
809 | mmc->block_dev.type = 0; | |
810 | mmc->block_dev.blksz = mmc->read_bl_len; | |
9b1f942c | 811 | mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len); |
0b453ffe RV |
812 | sprintf(mmc->block_dev.vendor, "Man %06x Snr %08x", mmc->cid[0] >> 8, |
813 | (mmc->cid[2] << 8) | (mmc->cid[3] >> 24)); | |
814 | sprintf(mmc->block_dev.product, "%c%c%c%c%c", mmc->cid[0] & 0xff, | |
815 | (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff, | |
816 | (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff); | |
817 | sprintf(mmc->block_dev.revision, "%d.%d", mmc->cid[2] >> 28, | |
818 | (mmc->cid[2] >> 24) & 0xf); | |
272cc70b AF |
819 | init_part(&mmc->block_dev); |
820 | ||
821 | return 0; | |
822 | } | |
823 | ||
824 | int mmc_send_if_cond(struct mmc *mmc) | |
825 | { | |
826 | struct mmc_cmd cmd; | |
827 | int err; | |
828 | ||
829 | cmd.cmdidx = SD_CMD_SEND_IF_COND; | |
830 | /* We set the bit if the host supports voltages between 2.7 and 3.6 V */ | |
831 | cmd.cmdarg = ((mmc->voltages & 0xff8000) != 0) << 8 | 0xaa; | |
832 | cmd.resp_type = MMC_RSP_R7; | |
833 | cmd.flags = 0; | |
834 | ||
835 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
836 | ||
837 | if (err) | |
838 | return err; | |
839 | ||
998be3dd | 840 | if ((cmd.response[0] & 0xff) != 0xaa) |
272cc70b AF |
841 | return UNUSABLE_ERR; |
842 | else | |
843 | mmc->version = SD_VERSION_2; | |
844 | ||
845 | return 0; | |
846 | } | |
847 | ||
848 | int mmc_register(struct mmc *mmc) | |
849 | { | |
850 | /* Setup the universal parts of the block interface just once */ | |
851 | mmc->block_dev.if_type = IF_TYPE_MMC; | |
852 | mmc->block_dev.dev = cur_dev_num++; | |
853 | mmc->block_dev.removable = 1; | |
854 | mmc->block_dev.block_read = mmc_bread; | |
855 | mmc->block_dev.block_write = mmc_bwrite; | |
856 | ||
857 | INIT_LIST_HEAD (&mmc->link); | |
858 | ||
859 | list_add_tail (&mmc->link, &mmc_devices); | |
860 | ||
861 | return 0; | |
862 | } | |
863 | ||
864 | block_dev_desc_t *mmc_get_dev(int dev) | |
865 | { | |
866 | struct mmc *mmc = find_mmc_device(dev); | |
867 | ||
e85649c7 | 868 | return mmc ? &mmc->block_dev : NULL; |
272cc70b AF |
869 | } |
870 | ||
871 | int mmc_init(struct mmc *mmc) | |
872 | { | |
873 | int err; | |
874 | ||
875 | err = mmc->init(mmc); | |
876 | ||
877 | if (err) | |
878 | return err; | |
879 | ||
b86b85e2 IY |
880 | mmc_set_bus_width(mmc, 1); |
881 | mmc_set_clock(mmc, 1); | |
882 | ||
272cc70b AF |
883 | /* Reset the Card */ |
884 | err = mmc_go_idle(mmc); | |
885 | ||
886 | if (err) | |
887 | return err; | |
888 | ||
889 | /* Test for SD version 2 */ | |
890 | err = mmc_send_if_cond(mmc); | |
891 | ||
272cc70b AF |
892 | /* Now try to get the SD card's operating condition */ |
893 | err = sd_send_op_cond(mmc); | |
894 | ||
895 | /* If the command timed out, we check for an MMC card */ | |
896 | if (err == TIMEOUT) { | |
897 | err = mmc_send_op_cond(mmc); | |
898 | ||
899 | if (err) { | |
900 | printf("Card did not respond to voltage select!\n"); | |
901 | return UNUSABLE_ERR; | |
902 | } | |
903 | } | |
904 | ||
905 | return mmc_startup(mmc); | |
906 | } | |
907 | ||
908 | /* | |
909 | * CPU and board-specific MMC initializations. Aliased function | |
910 | * signals caller to move on | |
911 | */ | |
912 | static int __def_mmc_init(bd_t *bis) | |
913 | { | |
914 | return -1; | |
915 | } | |
916 | ||
f9a109b3 PT |
917 | int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init"))); |
918 | int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init"))); | |
272cc70b AF |
919 | |
920 | void print_mmc_devices(char separator) | |
921 | { | |
922 | struct mmc *m; | |
923 | struct list_head *entry; | |
924 | ||
925 | list_for_each(entry, &mmc_devices) { | |
926 | m = list_entry(entry, struct mmc, link); | |
927 | ||
928 | printf("%s: %d", m->name, m->block_dev.dev); | |
929 | ||
930 | if (entry->next != &mmc_devices) | |
931 | printf("%c ", separator); | |
932 | } | |
933 | ||
934 | printf("\n"); | |
935 | } | |
936 | ||
937 | int mmc_initialize(bd_t *bis) | |
938 | { | |
939 | INIT_LIST_HEAD (&mmc_devices); | |
940 | cur_dev_num = 0; | |
941 | ||
942 | if (board_mmc_init(bis) < 0) | |
943 | cpu_mmc_init(bis); | |
944 | ||
945 | print_mmc_devices(','); | |
946 | ||
947 | return 0; | |
948 | } |