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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 | ||
39 | int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) | |
40 | { | |
41 | return mmc->send_cmd(mmc, cmd, data); | |
42 | } | |
43 | ||
44 | int mmc_set_blocklen(struct mmc *mmc, int len) | |
45 | { | |
46 | struct mmc_cmd cmd; | |
47 | ||
48 | cmd.cmdidx = MMC_CMD_SET_BLOCKLEN; | |
49 | cmd.resp_type = MMC_RSP_R1; | |
50 | cmd.cmdarg = len; | |
51 | cmd.flags = 0; | |
52 | ||
53 | return mmc_send_cmd(mmc, &cmd, NULL); | |
54 | } | |
55 | ||
56 | struct mmc *find_mmc_device(int dev_num) | |
57 | { | |
58 | struct mmc *m; | |
59 | struct list_head *entry; | |
60 | ||
61 | list_for_each(entry, &mmc_devices) { | |
62 | m = list_entry(entry, struct mmc, link); | |
63 | ||
64 | if (m->block_dev.dev == dev_num) | |
65 | return m; | |
66 | } | |
67 | ||
68 | printf("MMC Device %d not found\n", dev_num); | |
69 | ||
70 | return NULL; | |
71 | } | |
72 | ||
73 | static ulong | |
74 | mmc_bwrite(int dev_num, ulong start, lbaint_t blkcnt, const void*src) | |
75 | { | |
76 | struct mmc_cmd cmd; | |
77 | struct mmc_data data; | |
78 | int err; | |
79 | int stoperr = 0; | |
80 | struct mmc *mmc = find_mmc_device(dev_num); | |
81 | int blklen; | |
82 | ||
83 | if (!mmc) | |
84 | return -1; | |
85 | ||
86 | blklen = mmc->write_bl_len; | |
87 | ||
88 | err = mmc_set_blocklen(mmc, mmc->write_bl_len); | |
89 | ||
90 | if (err) { | |
91 | printf("set write bl len failed\n\r"); | |
92 | return err; | |
93 | } | |
94 | ||
95 | if (blkcnt > 1) | |
96 | cmd.cmdidx = MMC_CMD_WRITE_MULTIPLE_BLOCK; | |
97 | else | |
98 | cmd.cmdidx = MMC_CMD_WRITE_SINGLE_BLOCK; | |
99 | ||
100 | if (mmc->high_capacity) | |
101 | cmd.cmdarg = start; | |
102 | else | |
103 | cmd.cmdarg = start * blklen; | |
104 | ||
105 | cmd.resp_type = MMC_RSP_R1; | |
106 | cmd.flags = 0; | |
107 | ||
108 | data.src = src; | |
109 | data.blocks = blkcnt; | |
110 | data.blocksize = blklen; | |
111 | data.flags = MMC_DATA_WRITE; | |
112 | ||
113 | err = mmc_send_cmd(mmc, &cmd, &data); | |
114 | ||
115 | if (err) { | |
116 | printf("mmc write failed\n\r"); | |
117 | return err; | |
118 | } | |
119 | ||
120 | if (blkcnt > 1) { | |
121 | cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION; | |
122 | cmd.cmdarg = 0; | |
123 | cmd.resp_type = MMC_RSP_R1b; | |
124 | cmd.flags = 0; | |
125 | stoperr = mmc_send_cmd(mmc, &cmd, NULL); | |
126 | } | |
127 | ||
128 | return blkcnt; | |
129 | } | |
130 | ||
131 | int mmc_read_block(struct mmc *mmc, void *dst, uint blocknum) | |
132 | { | |
133 | struct mmc_cmd cmd; | |
134 | struct mmc_data data; | |
135 | ||
136 | cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK; | |
137 | ||
138 | if (mmc->high_capacity) | |
139 | cmd.cmdarg = blocknum; | |
140 | else | |
141 | cmd.cmdarg = blocknum * mmc->read_bl_len; | |
142 | ||
143 | cmd.resp_type = MMC_RSP_R1; | |
144 | cmd.flags = 0; | |
145 | ||
146 | data.dest = dst; | |
147 | data.blocks = 1; | |
148 | data.blocksize = mmc->read_bl_len; | |
149 | data.flags = MMC_DATA_READ; | |
150 | ||
151 | return mmc_send_cmd(mmc, &cmd, &data); | |
152 | } | |
153 | ||
154 | int mmc_read(struct mmc *mmc, u64 src, uchar *dst, int size) | |
155 | { | |
156 | char *buffer; | |
157 | int i; | |
158 | int blklen = mmc->read_bl_len; | |
9b1f942c RV |
159 | int startblock = lldiv(src, mmc->read_bl_len); |
160 | int endblock = lldiv(src + size - 1, mmc->read_bl_len); | |
272cc70b AF |
161 | int err = 0; |
162 | ||
163 | /* Make a buffer big enough to hold all the blocks we might read */ | |
164 | buffer = malloc(blklen); | |
165 | ||
166 | if (!buffer) { | |
167 | printf("Could not allocate buffer for MMC read!\n"); | |
168 | return -1; | |
169 | } | |
170 | ||
171 | /* We always do full block reads from the card */ | |
172 | err = mmc_set_blocklen(mmc, mmc->read_bl_len); | |
173 | ||
174 | if (err) | |
175 | return err; | |
176 | ||
177 | for (i = startblock; i <= endblock; i++) { | |
178 | int segment_size; | |
179 | int offset; | |
180 | ||
181 | err = mmc_read_block(mmc, buffer, i); | |
182 | ||
183 | if (err) | |
184 | goto free_buffer; | |
185 | ||
186 | /* | |
187 | * The first block may not be aligned, so we | |
188 | * copy from the desired point in the block | |
189 | */ | |
190 | offset = (src & (blklen - 1)); | |
191 | segment_size = MIN(blklen - offset, size); | |
192 | ||
193 | memcpy(dst, buffer + offset, segment_size); | |
194 | ||
195 | dst += segment_size; | |
196 | src += segment_size; | |
197 | size -= segment_size; | |
198 | } | |
199 | ||
200 | free_buffer: | |
201 | free(buffer); | |
202 | ||
203 | return err; | |
204 | } | |
205 | ||
206 | static ulong mmc_bread(int dev_num, ulong start, lbaint_t blkcnt, void *dst) | |
207 | { | |
208 | int err; | |
209 | int i; | |
210 | struct mmc *mmc = find_mmc_device(dev_num); | |
211 | ||
212 | if (!mmc) | |
213 | return 0; | |
214 | ||
215 | /* We always do full block reads from the card */ | |
216 | err = mmc_set_blocklen(mmc, mmc->read_bl_len); | |
217 | ||
218 | if (err) { | |
219 | return 0; | |
220 | } | |
221 | ||
222 | for (i = start; i < start + blkcnt; i++, dst += mmc->read_bl_len) { | |
223 | err = mmc_read_block(mmc, dst, i); | |
224 | ||
225 | if (err) { | |
226 | printf("block read failed: %d\n", err); | |
227 | return i - start; | |
228 | } | |
229 | } | |
230 | ||
231 | return blkcnt; | |
232 | } | |
233 | ||
234 | int mmc_go_idle(struct mmc* mmc) | |
235 | { | |
236 | struct mmc_cmd cmd; | |
237 | int err; | |
238 | ||
239 | udelay(1000); | |
240 | ||
241 | cmd.cmdidx = MMC_CMD_GO_IDLE_STATE; | |
242 | cmd.cmdarg = 0; | |
243 | cmd.resp_type = MMC_RSP_NONE; | |
244 | cmd.flags = 0; | |
245 | ||
246 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
247 | ||
248 | if (err) | |
249 | return err; | |
250 | ||
251 | udelay(2000); | |
252 | ||
253 | return 0; | |
254 | } | |
255 | ||
256 | int | |
257 | sd_send_op_cond(struct mmc *mmc) | |
258 | { | |
259 | int timeout = 1000; | |
260 | int err; | |
261 | struct mmc_cmd cmd; | |
262 | ||
263 | do { | |
264 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
265 | cmd.resp_type = MMC_RSP_R1; | |
266 | cmd.cmdarg = 0; | |
267 | cmd.flags = 0; | |
268 | ||
269 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
270 | ||
271 | if (err) | |
272 | return err; | |
273 | ||
274 | cmd.cmdidx = SD_CMD_APP_SEND_OP_COND; | |
275 | cmd.resp_type = MMC_RSP_R3; | |
276 | cmd.cmdarg = mmc->voltages; | |
277 | ||
278 | if (mmc->version == SD_VERSION_2) | |
279 | cmd.cmdarg |= OCR_HCS; | |
280 | ||
281 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
282 | ||
283 | if (err) | |
284 | return err; | |
285 | ||
286 | udelay(1000); | |
287 | } while ((!(cmd.response[0] & OCR_BUSY)) && timeout--); | |
288 | ||
289 | if (timeout <= 0) | |
290 | return UNUSABLE_ERR; | |
291 | ||
292 | if (mmc->version != SD_VERSION_2) | |
293 | mmc->version = SD_VERSION_1_0; | |
294 | ||
295 | mmc->ocr = ((uint *)(cmd.response))[0]; | |
296 | ||
297 | mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); | |
298 | mmc->rca = 0; | |
299 | ||
300 | return 0; | |
301 | } | |
302 | ||
303 | int mmc_send_op_cond(struct mmc *mmc) | |
304 | { | |
305 | int timeout = 1000; | |
306 | struct mmc_cmd cmd; | |
307 | int err; | |
308 | ||
309 | /* Some cards seem to need this */ | |
310 | mmc_go_idle(mmc); | |
311 | ||
312 | do { | |
313 | cmd.cmdidx = MMC_CMD_SEND_OP_COND; | |
314 | cmd.resp_type = MMC_RSP_R3; | |
315 | cmd.cmdarg = OCR_HCS | mmc->voltages; | |
316 | cmd.flags = 0; | |
317 | ||
318 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
319 | ||
320 | if (err) | |
321 | return err; | |
322 | ||
323 | udelay(1000); | |
324 | } while (!(cmd.response[0] & OCR_BUSY) && timeout--); | |
325 | ||
326 | if (timeout <= 0) | |
327 | return UNUSABLE_ERR; | |
328 | ||
329 | mmc->version = MMC_VERSION_UNKNOWN; | |
330 | mmc->ocr = ((uint *)(cmd.response))[0]; | |
331 | ||
332 | mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); | |
333 | mmc->rca = 0; | |
334 | ||
335 | return 0; | |
336 | } | |
337 | ||
338 | ||
339 | int mmc_send_ext_csd(struct mmc *mmc, char *ext_csd) | |
340 | { | |
341 | struct mmc_cmd cmd; | |
342 | struct mmc_data data; | |
343 | int err; | |
344 | ||
345 | /* Get the Card Status Register */ | |
346 | cmd.cmdidx = MMC_CMD_SEND_EXT_CSD; | |
347 | cmd.resp_type = MMC_RSP_R1; | |
348 | cmd.cmdarg = 0; | |
349 | cmd.flags = 0; | |
350 | ||
351 | data.dest = ext_csd; | |
352 | data.blocks = 1; | |
353 | data.blocksize = 512; | |
354 | data.flags = MMC_DATA_READ; | |
355 | ||
356 | err = mmc_send_cmd(mmc, &cmd, &data); | |
357 | ||
358 | return err; | |
359 | } | |
360 | ||
361 | ||
362 | int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value) | |
363 | { | |
364 | struct mmc_cmd cmd; | |
365 | ||
366 | cmd.cmdidx = MMC_CMD_SWITCH; | |
367 | cmd.resp_type = MMC_RSP_R1b; | |
368 | cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | | |
369 | (index << 16) | | |
370 | (value << 8); | |
371 | cmd.flags = 0; | |
372 | ||
373 | return mmc_send_cmd(mmc, &cmd, NULL); | |
374 | } | |
375 | ||
376 | int mmc_change_freq(struct mmc *mmc) | |
377 | { | |
378 | char ext_csd[512]; | |
379 | char cardtype; | |
380 | int err; | |
381 | ||
382 | mmc->card_caps = 0; | |
383 | ||
384 | /* Only version 4 supports high-speed */ | |
385 | if (mmc->version < MMC_VERSION_4) | |
386 | return 0; | |
387 | ||
388 | mmc->card_caps |= MMC_MODE_4BIT; | |
389 | ||
390 | err = mmc_send_ext_csd(mmc, ext_csd); | |
391 | ||
392 | if (err) | |
393 | return err; | |
394 | ||
395 | if (ext_csd[212] || ext_csd[213] || ext_csd[214] || ext_csd[215]) | |
396 | mmc->high_capacity = 1; | |
397 | ||
398 | cardtype = ext_csd[196] & 0xf; | |
399 | ||
400 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1); | |
401 | ||
402 | if (err) | |
403 | return err; | |
404 | ||
405 | /* Now check to see that it worked */ | |
406 | err = mmc_send_ext_csd(mmc, ext_csd); | |
407 | ||
408 | if (err) | |
409 | return err; | |
410 | ||
411 | /* No high-speed support */ | |
412 | if (!ext_csd[185]) | |
413 | return 0; | |
414 | ||
415 | /* High Speed is set, there are two types: 52MHz and 26MHz */ | |
416 | if (cardtype & MMC_HS_52MHZ) | |
417 | mmc->card_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS; | |
418 | else | |
419 | mmc->card_caps |= MMC_MODE_HS; | |
420 | ||
421 | return 0; | |
422 | } | |
423 | ||
424 | int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp) | |
425 | { | |
426 | struct mmc_cmd cmd; | |
427 | struct mmc_data data; | |
428 | ||
429 | /* Switch the frequency */ | |
430 | cmd.cmdidx = SD_CMD_SWITCH_FUNC; | |
431 | cmd.resp_type = MMC_RSP_R1; | |
432 | cmd.cmdarg = (mode << 31) | 0xffffff; | |
433 | cmd.cmdarg &= ~(0xf << (group * 4)); | |
434 | cmd.cmdarg |= value << (group * 4); | |
435 | cmd.flags = 0; | |
436 | ||
437 | data.dest = (char *)resp; | |
438 | data.blocksize = 64; | |
439 | data.blocks = 1; | |
440 | data.flags = MMC_DATA_READ; | |
441 | ||
442 | return mmc_send_cmd(mmc, &cmd, &data); | |
443 | } | |
444 | ||
445 | ||
446 | int sd_change_freq(struct mmc *mmc) | |
447 | { | |
448 | int err; | |
449 | struct mmc_cmd cmd; | |
450 | uint scr[2]; | |
451 | uint switch_status[16]; | |
452 | struct mmc_data data; | |
453 | int timeout; | |
454 | ||
455 | mmc->card_caps = 0; | |
456 | ||
457 | /* Read the SCR to find out if this card supports higher speeds */ | |
458 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
459 | cmd.resp_type = MMC_RSP_R1; | |
460 | cmd.cmdarg = mmc->rca << 16; | |
461 | cmd.flags = 0; | |
462 | ||
463 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
464 | ||
465 | if (err) | |
466 | return err; | |
467 | ||
468 | cmd.cmdidx = SD_CMD_APP_SEND_SCR; | |
469 | cmd.resp_type = MMC_RSP_R1; | |
470 | cmd.cmdarg = 0; | |
471 | cmd.flags = 0; | |
472 | ||
473 | timeout = 3; | |
474 | ||
475 | retry_scr: | |
476 | data.dest = (char *)&scr; | |
477 | data.blocksize = 8; | |
478 | data.blocks = 1; | |
479 | data.flags = MMC_DATA_READ; | |
480 | ||
481 | err = mmc_send_cmd(mmc, &cmd, &data); | |
482 | ||
483 | if (err) { | |
484 | if (timeout--) | |
485 | goto retry_scr; | |
486 | ||
487 | return err; | |
488 | } | |
489 | ||
490 | mmc->scr[0] = scr[0]; | |
491 | mmc->scr[1] = scr[1]; | |
492 | ||
493 | switch ((mmc->scr[0] >> 24) & 0xf) { | |
494 | case 0: | |
495 | mmc->version = SD_VERSION_1_0; | |
496 | break; | |
497 | case 1: | |
498 | mmc->version = SD_VERSION_1_10; | |
499 | break; | |
500 | case 2: | |
501 | mmc->version = SD_VERSION_2; | |
502 | break; | |
503 | default: | |
504 | mmc->version = SD_VERSION_1_0; | |
505 | break; | |
506 | } | |
507 | ||
508 | /* Version 1.0 doesn't support switching */ | |
509 | if (mmc->version == SD_VERSION_1_0) | |
510 | return 0; | |
511 | ||
512 | timeout = 4; | |
513 | while (timeout--) { | |
514 | err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1, | |
515 | (u8 *)&switch_status); | |
516 | ||
517 | if (err) | |
518 | return err; | |
519 | ||
520 | /* The high-speed function is busy. Try again */ | |
521 | if (!switch_status[7] & SD_HIGHSPEED_BUSY) | |
522 | break; | |
523 | } | |
524 | ||
525 | if (mmc->scr[0] & SD_DATA_4BIT) | |
526 | mmc->card_caps |= MMC_MODE_4BIT; | |
527 | ||
528 | /* If high-speed isn't supported, we return */ | |
529 | if (!(switch_status[3] & SD_HIGHSPEED_SUPPORTED)) | |
530 | return 0; | |
531 | ||
532 | err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, 1, (u8 *)&switch_status); | |
533 | ||
534 | if (err) | |
535 | return err; | |
536 | ||
537 | if ((switch_status[4] & 0x0f000000) == 0x01000000) | |
538 | mmc->card_caps |= MMC_MODE_HS; | |
539 | ||
540 | return 0; | |
541 | } | |
542 | ||
543 | /* frequency bases */ | |
544 | /* divided by 10 to be nice to platforms without floating point */ | |
545 | int fbase[] = { | |
546 | 10000, | |
547 | 100000, | |
548 | 1000000, | |
549 | 10000000, | |
550 | }; | |
551 | ||
552 | /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice | |
553 | * to platforms without floating point. | |
554 | */ | |
555 | int multipliers[] = { | |
556 | 0, /* reserved */ | |
557 | 10, | |
558 | 12, | |
559 | 13, | |
560 | 15, | |
561 | 20, | |
562 | 25, | |
563 | 30, | |
564 | 35, | |
565 | 40, | |
566 | 45, | |
567 | 50, | |
568 | 55, | |
569 | 60, | |
570 | 70, | |
571 | 80, | |
572 | }; | |
573 | ||
574 | void mmc_set_ios(struct mmc *mmc) | |
575 | { | |
576 | mmc->set_ios(mmc); | |
577 | } | |
578 | ||
579 | void mmc_set_clock(struct mmc *mmc, uint clock) | |
580 | { | |
581 | if (clock > mmc->f_max) | |
582 | clock = mmc->f_max; | |
583 | ||
584 | if (clock < mmc->f_min) | |
585 | clock = mmc->f_min; | |
586 | ||
587 | mmc->clock = clock; | |
588 | ||
589 | mmc_set_ios(mmc); | |
590 | } | |
591 | ||
592 | void mmc_set_bus_width(struct mmc *mmc, uint width) | |
593 | { | |
594 | mmc->bus_width = width; | |
595 | ||
596 | mmc_set_ios(mmc); | |
597 | } | |
598 | ||
599 | int mmc_startup(struct mmc *mmc) | |
600 | { | |
601 | int err; | |
602 | uint mult, freq; | |
603 | u64 cmult, csize; | |
604 | struct mmc_cmd cmd; | |
605 | ||
606 | /* Put the Card in Identify Mode */ | |
607 | cmd.cmdidx = MMC_CMD_ALL_SEND_CID; | |
608 | cmd.resp_type = MMC_RSP_R2; | |
609 | cmd.cmdarg = 0; | |
610 | cmd.flags = 0; | |
611 | ||
612 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
613 | ||
614 | if (err) | |
615 | return err; | |
616 | ||
617 | memcpy(mmc->cid, cmd.response, 16); | |
618 | ||
619 | /* | |
620 | * For MMC cards, set the Relative Address. | |
621 | * For SD cards, get the Relatvie Address. | |
622 | * This also puts the cards into Standby State | |
623 | */ | |
624 | cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR; | |
625 | cmd.cmdarg = mmc->rca << 16; | |
626 | cmd.resp_type = MMC_RSP_R6; | |
627 | cmd.flags = 0; | |
628 | ||
629 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
630 | ||
631 | if (err) | |
632 | return err; | |
633 | ||
634 | if (IS_SD(mmc)) | |
635 | mmc->rca = (((uint *)(cmd.response))[0] >> 16) & 0xffff; | |
636 | ||
637 | /* Get the Card-Specific Data */ | |
638 | cmd.cmdidx = MMC_CMD_SEND_CSD; | |
639 | cmd.resp_type = MMC_RSP_R2; | |
640 | cmd.cmdarg = mmc->rca << 16; | |
641 | cmd.flags = 0; | |
642 | ||
643 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
644 | ||
645 | if (err) | |
646 | return err; | |
647 | ||
648 | mmc->csd[0] = ((uint *)(cmd.response))[0]; | |
649 | mmc->csd[1] = ((uint *)(cmd.response))[1]; | |
650 | mmc->csd[2] = ((uint *)(cmd.response))[2]; | |
651 | mmc->csd[3] = ((uint *)(cmd.response))[3]; | |
652 | ||
653 | if (mmc->version == MMC_VERSION_UNKNOWN) { | |
654 | int version = (cmd.response[0] >> 2) & 0xf; | |
655 | ||
656 | switch (version) { | |
657 | case 0: | |
658 | mmc->version = MMC_VERSION_1_2; | |
659 | break; | |
660 | case 1: | |
661 | mmc->version = MMC_VERSION_1_4; | |
662 | break; | |
663 | case 2: | |
664 | mmc->version = MMC_VERSION_2_2; | |
665 | break; | |
666 | case 3: | |
667 | mmc->version = MMC_VERSION_3; | |
668 | break; | |
669 | case 4: | |
670 | mmc->version = MMC_VERSION_4; | |
671 | break; | |
672 | default: | |
673 | mmc->version = MMC_VERSION_1_2; | |
674 | break; | |
675 | } | |
676 | } | |
677 | ||
678 | /* divide frequency by 10, since the mults are 10x bigger */ | |
679 | freq = fbase[(cmd.response[3] & 0x7)]; | |
680 | mult = multipliers[((cmd.response[3] >> 3) & 0xf)]; | |
681 | ||
682 | mmc->tran_speed = freq * mult; | |
683 | ||
684 | mmc->read_bl_len = 1 << ((((uint *)(cmd.response))[1] >> 16) & 0xf); | |
685 | ||
686 | if (IS_SD(mmc)) | |
687 | mmc->write_bl_len = mmc->read_bl_len; | |
688 | else | |
689 | mmc->write_bl_len = 1 << ((((uint *)(cmd.response))[3] >> 22) & 0xf); | |
690 | ||
691 | if (mmc->high_capacity) { | |
692 | csize = (mmc->csd[1] & 0x3f) << 16 | |
693 | | (mmc->csd[2] & 0xffff0000) >> 16; | |
694 | cmult = 8; | |
695 | } else { | |
696 | csize = (mmc->csd[1] & 0x3ff) << 2 | |
697 | | (mmc->csd[2] & 0xc0000000) >> 30; | |
698 | cmult = (mmc->csd[2] & 0x00038000) >> 15; | |
699 | } | |
700 | ||
701 | mmc->capacity = (csize + 1) << (cmult + 2); | |
702 | mmc->capacity *= mmc->read_bl_len; | |
703 | ||
704 | if (mmc->read_bl_len > 512) | |
705 | mmc->read_bl_len = 512; | |
706 | ||
707 | if (mmc->write_bl_len > 512) | |
708 | mmc->write_bl_len = 512; | |
709 | ||
710 | /* Select the card, and put it into Transfer Mode */ | |
711 | cmd.cmdidx = MMC_CMD_SELECT_CARD; | |
712 | cmd.resp_type = MMC_RSP_R1b; | |
713 | cmd.cmdarg = mmc->rca << 16; | |
714 | cmd.flags = 0; | |
715 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
716 | ||
717 | if (err) | |
718 | return err; | |
719 | ||
720 | if (IS_SD(mmc)) | |
721 | err = sd_change_freq(mmc); | |
722 | else | |
723 | err = mmc_change_freq(mmc); | |
724 | ||
725 | if (err) | |
726 | return err; | |
727 | ||
728 | /* Restrict card's capabilities by what the host can do */ | |
729 | mmc->card_caps &= mmc->host_caps; | |
730 | ||
731 | if (IS_SD(mmc)) { | |
732 | if (mmc->card_caps & MMC_MODE_4BIT) { | |
733 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
734 | cmd.resp_type = MMC_RSP_R1; | |
735 | cmd.cmdarg = mmc->rca << 16; | |
736 | cmd.flags = 0; | |
737 | ||
738 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
739 | if (err) | |
740 | return err; | |
741 | ||
742 | cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH; | |
743 | cmd.resp_type = MMC_RSP_R1; | |
744 | cmd.cmdarg = 2; | |
745 | cmd.flags = 0; | |
746 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
747 | if (err) | |
748 | return err; | |
749 | ||
750 | mmc_set_bus_width(mmc, 4); | |
751 | } | |
752 | ||
753 | if (mmc->card_caps & MMC_MODE_HS) | |
754 | mmc_set_clock(mmc, 50000000); | |
755 | else | |
756 | mmc_set_clock(mmc, 25000000); | |
757 | } else { | |
758 | if (mmc->card_caps & MMC_MODE_4BIT) { | |
759 | /* Set the card to use 4 bit*/ | |
760 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
761 | EXT_CSD_BUS_WIDTH, | |
762 | EXT_CSD_BUS_WIDTH_4); | |
763 | ||
764 | if (err) | |
765 | return err; | |
766 | ||
767 | mmc_set_bus_width(mmc, 4); | |
768 | } else if (mmc->card_caps & MMC_MODE_8BIT) { | |
769 | /* Set the card to use 8 bit*/ | |
770 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
771 | EXT_CSD_BUS_WIDTH, | |
772 | EXT_CSD_BUS_WIDTH_8); | |
773 | ||
774 | if (err) | |
775 | return err; | |
776 | ||
777 | mmc_set_bus_width(mmc, 8); | |
778 | } | |
779 | ||
780 | if (mmc->card_caps & MMC_MODE_HS) { | |
781 | if (mmc->card_caps & MMC_MODE_HS_52MHz) | |
782 | mmc_set_clock(mmc, 52000000); | |
783 | else | |
784 | mmc_set_clock(mmc, 26000000); | |
785 | } else | |
786 | mmc_set_clock(mmc, 20000000); | |
787 | } | |
788 | ||
789 | /* fill in device description */ | |
790 | mmc->block_dev.lun = 0; | |
791 | mmc->block_dev.type = 0; | |
792 | mmc->block_dev.blksz = mmc->read_bl_len; | |
9b1f942c | 793 | mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len); |
272cc70b AF |
794 | sprintf(mmc->block_dev.vendor,"Man %02x%02x%02x Snr %02x%02x%02x%02x", |
795 | mmc->cid[0], mmc->cid[1], mmc->cid[2], | |
796 | mmc->cid[9], mmc->cid[10], mmc->cid[11], mmc->cid[12]); | |
797 | sprintf(mmc->block_dev.product,"%c%c%c%c%c", mmc->cid[3], | |
798 | mmc->cid[4], mmc->cid[5], mmc->cid[6], mmc->cid[7]); | |
799 | sprintf(mmc->block_dev.revision,"%d.%d", mmc->cid[8] >> 4, | |
800 | mmc->cid[8] & 0xf); | |
801 | init_part(&mmc->block_dev); | |
802 | ||
803 | return 0; | |
804 | } | |
805 | ||
806 | int mmc_send_if_cond(struct mmc *mmc) | |
807 | { | |
808 | struct mmc_cmd cmd; | |
809 | int err; | |
810 | ||
811 | cmd.cmdidx = SD_CMD_SEND_IF_COND; | |
812 | /* We set the bit if the host supports voltages between 2.7 and 3.6 V */ | |
813 | cmd.cmdarg = ((mmc->voltages & 0xff8000) != 0) << 8 | 0xaa; | |
814 | cmd.resp_type = MMC_RSP_R7; | |
815 | cmd.flags = 0; | |
816 | ||
817 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
818 | ||
819 | if (err) | |
820 | return err; | |
821 | ||
822 | if ((((uint *)(cmd.response))[0] & 0xff) != 0xaa) | |
823 | return UNUSABLE_ERR; | |
824 | else | |
825 | mmc->version = SD_VERSION_2; | |
826 | ||
827 | return 0; | |
828 | } | |
829 | ||
830 | int mmc_register(struct mmc *mmc) | |
831 | { | |
832 | /* Setup the universal parts of the block interface just once */ | |
833 | mmc->block_dev.if_type = IF_TYPE_MMC; | |
834 | mmc->block_dev.dev = cur_dev_num++; | |
835 | mmc->block_dev.removable = 1; | |
836 | mmc->block_dev.block_read = mmc_bread; | |
837 | mmc->block_dev.block_write = mmc_bwrite; | |
838 | ||
839 | INIT_LIST_HEAD (&mmc->link); | |
840 | ||
841 | list_add_tail (&mmc->link, &mmc_devices); | |
842 | ||
843 | return 0; | |
844 | } | |
845 | ||
846 | block_dev_desc_t *mmc_get_dev(int dev) | |
847 | { | |
848 | struct mmc *mmc = find_mmc_device(dev); | |
849 | ||
e85649c7 | 850 | return mmc ? &mmc->block_dev : NULL; |
272cc70b AF |
851 | } |
852 | ||
853 | int mmc_init(struct mmc *mmc) | |
854 | { | |
855 | int err; | |
856 | ||
857 | err = mmc->init(mmc); | |
858 | ||
859 | if (err) | |
860 | return err; | |
861 | ||
862 | /* Reset the Card */ | |
863 | err = mmc_go_idle(mmc); | |
864 | ||
865 | if (err) | |
866 | return err; | |
867 | ||
868 | /* Test for SD version 2 */ | |
869 | err = mmc_send_if_cond(mmc); | |
870 | ||
871 | /* If we got an error other than timeout, we bail */ | |
872 | if (err && err != TIMEOUT) | |
873 | return err; | |
874 | ||
875 | /* Now try to get the SD card's operating condition */ | |
876 | err = sd_send_op_cond(mmc); | |
877 | ||
878 | /* If the command timed out, we check for an MMC card */ | |
879 | if (err == TIMEOUT) { | |
880 | err = mmc_send_op_cond(mmc); | |
881 | ||
882 | if (err) { | |
883 | printf("Card did not respond to voltage select!\n"); | |
884 | return UNUSABLE_ERR; | |
885 | } | |
886 | } | |
887 | ||
888 | return mmc_startup(mmc); | |
889 | } | |
890 | ||
891 | /* | |
892 | * CPU and board-specific MMC initializations. Aliased function | |
893 | * signals caller to move on | |
894 | */ | |
895 | static int __def_mmc_init(bd_t *bis) | |
896 | { | |
897 | return -1; | |
898 | } | |
899 | ||
f9a109b3 PT |
900 | int cpu_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init"))); |
901 | int board_mmc_init(bd_t *bis) __attribute__((weak, alias("__def_mmc_init"))); | |
272cc70b AF |
902 | |
903 | void print_mmc_devices(char separator) | |
904 | { | |
905 | struct mmc *m; | |
906 | struct list_head *entry; | |
907 | ||
908 | list_for_each(entry, &mmc_devices) { | |
909 | m = list_entry(entry, struct mmc, link); | |
910 | ||
911 | printf("%s: %d", m->name, m->block_dev.dev); | |
912 | ||
913 | if (entry->next != &mmc_devices) | |
914 | printf("%c ", separator); | |
915 | } | |
916 | ||
917 | printf("\n"); | |
918 | } | |
919 | ||
920 | int mmc_initialize(bd_t *bis) | |
921 | { | |
922 | INIT_LIST_HEAD (&mmc_devices); | |
923 | cur_dev_num = 0; | |
924 | ||
925 | if (board_mmc_init(bis) < 0) | |
926 | cpu_mmc_init(bis); | |
927 | ||
928 | print_mmc_devices(','); | |
929 | ||
930 | return 0; | |
931 | } |