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1 | /* | |
2 | * Copyright 2008, Freescale Semiconductor, Inc | |
3 | * Andy Fleming | |
4 | * | |
5 | * Based vaguely on the Linux code | |
6 | * | |
7 | * SPDX-License-Identifier: GPL-2.0+ | |
8 | */ | |
9 | ||
10 | #include <config.h> | |
11 | #include <common.h> | |
12 | #include <command.h> | |
13 | #include <dm.h> | |
14 | #include <dm/device-internal.h> | |
15 | #include <errno.h> | |
16 | #include <mmc.h> | |
17 | #include <part.h> | |
18 | #include <power/regulator.h> | |
19 | #include <malloc.h> | |
20 | #include <memalign.h> | |
21 | #include <linux/list.h> | |
22 | #include <div64.h> | |
23 | #include "mmc_private.h" | |
24 | ||
25 | static int mmc_set_signal_voltage(struct mmc *mmc, uint signal_voltage); | |
26 | static int mmc_power_cycle(struct mmc *mmc); | |
27 | static int mmc_select_mode_and_width(struct mmc *mmc, uint card_caps); | |
28 | ||
29 | #if CONFIG_IS_ENABLED(MMC_TINY) | |
30 | static struct mmc mmc_static; | |
31 | struct mmc *find_mmc_device(int dev_num) | |
32 | { | |
33 | return &mmc_static; | |
34 | } | |
35 | ||
36 | void mmc_do_preinit(void) | |
37 | { | |
38 | struct mmc *m = &mmc_static; | |
39 | #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT | |
40 | mmc_set_preinit(m, 1); | |
41 | #endif | |
42 | if (m->preinit) | |
43 | mmc_start_init(m); | |
44 | } | |
45 | ||
46 | struct blk_desc *mmc_get_blk_desc(struct mmc *mmc) | |
47 | { | |
48 | return &mmc->block_dev; | |
49 | } | |
50 | #endif | |
51 | ||
52 | #if !CONFIG_IS_ENABLED(DM_MMC) | |
53 | ||
54 | #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) | |
55 | static int mmc_wait_dat0(struct mmc *mmc, int state, int timeout) | |
56 | { | |
57 | return -ENOSYS; | |
58 | } | |
59 | #endif | |
60 | ||
61 | __weak int board_mmc_getwp(struct mmc *mmc) | |
62 | { | |
63 | return -1; | |
64 | } | |
65 | ||
66 | int mmc_getwp(struct mmc *mmc) | |
67 | { | |
68 | int wp; | |
69 | ||
70 | wp = board_mmc_getwp(mmc); | |
71 | ||
72 | if (wp < 0) { | |
73 | if (mmc->cfg->ops->getwp) | |
74 | wp = mmc->cfg->ops->getwp(mmc); | |
75 | else | |
76 | wp = 0; | |
77 | } | |
78 | ||
79 | return wp; | |
80 | } | |
81 | ||
82 | __weak int board_mmc_getcd(struct mmc *mmc) | |
83 | { | |
84 | return -1; | |
85 | } | |
86 | #endif | |
87 | ||
88 | #ifdef CONFIG_MMC_TRACE | |
89 | void mmmc_trace_before_send(struct mmc *mmc, struct mmc_cmd *cmd) | |
90 | { | |
91 | printf("CMD_SEND:%d\n", cmd->cmdidx); | |
92 | printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg); | |
93 | } | |
94 | ||
95 | void mmmc_trace_after_send(struct mmc *mmc, struct mmc_cmd *cmd, int ret) | |
96 | { | |
97 | int i; | |
98 | u8 *ptr; | |
99 | ||
100 | if (ret) { | |
101 | printf("\t\tRET\t\t\t %d\n", ret); | |
102 | } else { | |
103 | switch (cmd->resp_type) { | |
104 | case MMC_RSP_NONE: | |
105 | printf("\t\tMMC_RSP_NONE\n"); | |
106 | break; | |
107 | case MMC_RSP_R1: | |
108 | printf("\t\tMMC_RSP_R1,5,6,7 \t 0x%08X \n", | |
109 | cmd->response[0]); | |
110 | break; | |
111 | case MMC_RSP_R1b: | |
112 | printf("\t\tMMC_RSP_R1b\t\t 0x%08X \n", | |
113 | cmd->response[0]); | |
114 | break; | |
115 | case MMC_RSP_R2: | |
116 | printf("\t\tMMC_RSP_R2\t\t 0x%08X \n", | |
117 | cmd->response[0]); | |
118 | printf("\t\t \t\t 0x%08X \n", | |
119 | cmd->response[1]); | |
120 | printf("\t\t \t\t 0x%08X \n", | |
121 | cmd->response[2]); | |
122 | printf("\t\t \t\t 0x%08X \n", | |
123 | cmd->response[3]); | |
124 | printf("\n"); | |
125 | printf("\t\t\t\t\tDUMPING DATA\n"); | |
126 | for (i = 0; i < 4; i++) { | |
127 | int j; | |
128 | printf("\t\t\t\t\t%03d - ", i*4); | |
129 | ptr = (u8 *)&cmd->response[i]; | |
130 | ptr += 3; | |
131 | for (j = 0; j < 4; j++) | |
132 | printf("%02X ", *ptr--); | |
133 | printf("\n"); | |
134 | } | |
135 | break; | |
136 | case MMC_RSP_R3: | |
137 | printf("\t\tMMC_RSP_R3,4\t\t 0x%08X \n", | |
138 | cmd->response[0]); | |
139 | break; | |
140 | default: | |
141 | printf("\t\tERROR MMC rsp not supported\n"); | |
142 | break; | |
143 | } | |
144 | } | |
145 | } | |
146 | ||
147 | void mmc_trace_state(struct mmc *mmc, struct mmc_cmd *cmd) | |
148 | { | |
149 | int status; | |
150 | ||
151 | status = (cmd->response[0] & MMC_STATUS_CURR_STATE) >> 9; | |
152 | printf("CURR STATE:%d\n", status); | |
153 | } | |
154 | #endif | |
155 | ||
156 | #if CONFIG_IS_ENABLED(MMC_VERBOSE) || defined(DEBUG) | |
157 | const char *mmc_mode_name(enum bus_mode mode) | |
158 | { | |
159 | static const char *const names[] = { | |
160 | [MMC_LEGACY] = "MMC legacy", | |
161 | [SD_LEGACY] = "SD Legacy", | |
162 | [MMC_HS] = "MMC High Speed (26MHz)", | |
163 | [SD_HS] = "SD High Speed (50MHz)", | |
164 | [UHS_SDR12] = "UHS SDR12 (25MHz)", | |
165 | [UHS_SDR25] = "UHS SDR25 (50MHz)", | |
166 | [UHS_SDR50] = "UHS SDR50 (100MHz)", | |
167 | [UHS_SDR104] = "UHS SDR104 (208MHz)", | |
168 | [UHS_DDR50] = "UHS DDR50 (50MHz)", | |
169 | [MMC_HS_52] = "MMC High Speed (52MHz)", | |
170 | [MMC_DDR_52] = "MMC DDR52 (52MHz)", | |
171 | [MMC_HS_200] = "HS200 (200MHz)", | |
172 | }; | |
173 | ||
174 | if (mode >= MMC_MODES_END) | |
175 | return "Unknown mode"; | |
176 | else | |
177 | return names[mode]; | |
178 | } | |
179 | #endif | |
180 | ||
181 | static uint mmc_mode2freq(struct mmc *mmc, enum bus_mode mode) | |
182 | { | |
183 | static const int freqs[] = { | |
184 | [SD_LEGACY] = 25000000, | |
185 | [MMC_HS] = 26000000, | |
186 | [SD_HS] = 50000000, | |
187 | #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) | |
188 | [UHS_SDR12] = 25000000, | |
189 | [UHS_SDR25] = 50000000, | |
190 | [UHS_SDR50] = 100000000, | |
191 | [UHS_DDR50] = 50000000, | |
192 | #ifdef MMC_SUPPORTS_TUNING | |
193 | [UHS_SDR104] = 208000000, | |
194 | #endif | |
195 | #endif | |
196 | [MMC_HS_52] = 52000000, | |
197 | [MMC_DDR_52] = 52000000, | |
198 | #if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) | |
199 | [MMC_HS_200] = 200000000, | |
200 | #endif | |
201 | }; | |
202 | ||
203 | if (mode == MMC_LEGACY) | |
204 | return mmc->legacy_speed; | |
205 | else if (mode >= MMC_MODES_END) | |
206 | return 0; | |
207 | else | |
208 | return freqs[mode]; | |
209 | } | |
210 | ||
211 | static int mmc_select_mode(struct mmc *mmc, enum bus_mode mode) | |
212 | { | |
213 | mmc->selected_mode = mode; | |
214 | mmc->tran_speed = mmc_mode2freq(mmc, mode); | |
215 | mmc->ddr_mode = mmc_is_mode_ddr(mode); | |
216 | pr_debug("selecting mode %s (freq : %d MHz)\n", mmc_mode_name(mode), | |
217 | mmc->tran_speed / 1000000); | |
218 | return 0; | |
219 | } | |
220 | ||
221 | #if !CONFIG_IS_ENABLED(DM_MMC) | |
222 | int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data) | |
223 | { | |
224 | int ret; | |
225 | ||
226 | mmmc_trace_before_send(mmc, cmd); | |
227 | ret = mmc->cfg->ops->send_cmd(mmc, cmd, data); | |
228 | mmmc_trace_after_send(mmc, cmd, ret); | |
229 | ||
230 | return ret; | |
231 | } | |
232 | #endif | |
233 | ||
234 | int mmc_send_status(struct mmc *mmc, int timeout) | |
235 | { | |
236 | struct mmc_cmd cmd; | |
237 | int err, retries = 5; | |
238 | ||
239 | cmd.cmdidx = MMC_CMD_SEND_STATUS; | |
240 | cmd.resp_type = MMC_RSP_R1; | |
241 | if (!mmc_host_is_spi(mmc)) | |
242 | cmd.cmdarg = mmc->rca << 16; | |
243 | ||
244 | while (1) { | |
245 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
246 | if (!err) { | |
247 | if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) && | |
248 | (cmd.response[0] & MMC_STATUS_CURR_STATE) != | |
249 | MMC_STATE_PRG) | |
250 | break; | |
251 | ||
252 | if (cmd.response[0] & MMC_STATUS_MASK) { | |
253 | #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) | |
254 | pr_err("Status Error: 0x%08X\n", | |
255 | cmd.response[0]); | |
256 | #endif | |
257 | return -ECOMM; | |
258 | } | |
259 | } else if (--retries < 0) | |
260 | return err; | |
261 | ||
262 | if (timeout-- <= 0) | |
263 | break; | |
264 | ||
265 | udelay(1000); | |
266 | } | |
267 | ||
268 | mmc_trace_state(mmc, &cmd); | |
269 | if (timeout <= 0) { | |
270 | #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) | |
271 | pr_err("Timeout waiting card ready\n"); | |
272 | #endif | |
273 | return -ETIMEDOUT; | |
274 | } | |
275 | ||
276 | return 0; | |
277 | } | |
278 | ||
279 | int mmc_set_blocklen(struct mmc *mmc, int len) | |
280 | { | |
281 | struct mmc_cmd cmd; | |
282 | int err; | |
283 | ||
284 | if (mmc->ddr_mode) | |
285 | return 0; | |
286 | ||
287 | cmd.cmdidx = MMC_CMD_SET_BLOCKLEN; | |
288 | cmd.resp_type = MMC_RSP_R1; | |
289 | cmd.cmdarg = len; | |
290 | ||
291 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
292 | ||
293 | #ifdef CONFIG_MMC_QUIRKS | |
294 | if (err && (mmc->quirks & MMC_QUIRK_RETRY_SET_BLOCKLEN)) { | |
295 | int retries = 4; | |
296 | /* | |
297 | * It has been seen that SET_BLOCKLEN may fail on the first | |
298 | * attempt, let's try a few more time | |
299 | */ | |
300 | do { | |
301 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
302 | if (!err) | |
303 | break; | |
304 | } while (retries--); | |
305 | } | |
306 | #endif | |
307 | ||
308 | return err; | |
309 | } | |
310 | ||
311 | #ifdef MMC_SUPPORTS_TUNING | |
312 | static const u8 tuning_blk_pattern_4bit[] = { | |
313 | 0xff, 0x0f, 0xff, 0x00, 0xff, 0xcc, 0xc3, 0xcc, | |
314 | 0xc3, 0x3c, 0xcc, 0xff, 0xfe, 0xff, 0xfe, 0xef, | |
315 | 0xff, 0xdf, 0xff, 0xdd, 0xff, 0xfb, 0xff, 0xfb, | |
316 | 0xbf, 0xff, 0x7f, 0xff, 0x77, 0xf7, 0xbd, 0xef, | |
317 | 0xff, 0xf0, 0xff, 0xf0, 0x0f, 0xfc, 0xcc, 0x3c, | |
318 | 0xcc, 0x33, 0xcc, 0xcf, 0xff, 0xef, 0xff, 0xee, | |
319 | 0xff, 0xfd, 0xff, 0xfd, 0xdf, 0xff, 0xbf, 0xff, | |
320 | 0xbb, 0xff, 0xf7, 0xff, 0xf7, 0x7f, 0x7b, 0xde, | |
321 | }; | |
322 | ||
323 | static const u8 tuning_blk_pattern_8bit[] = { | |
324 | 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00, | |
325 | 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, 0xcc, | |
326 | 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, 0xff, | |
327 | 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, 0xff, | |
328 | 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, 0xdd, | |
329 | 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, 0xbb, | |
330 | 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, 0xff, | |
331 | 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, 0xff, | |
332 | 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, | |
333 | 0x00, 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, | |
334 | 0xcc, 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, | |
335 | 0xff, 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, | |
336 | 0xff, 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, | |
337 | 0xdd, 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, | |
338 | 0xbb, 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, | |
339 | 0xff, 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, | |
340 | }; | |
341 | ||
342 | int mmc_send_tuning(struct mmc *mmc, u32 opcode, int *cmd_error) | |
343 | { | |
344 | struct mmc_cmd cmd; | |
345 | struct mmc_data data; | |
346 | const u8 *tuning_block_pattern; | |
347 | int size, err; | |
348 | ||
349 | if (mmc->bus_width == 8) { | |
350 | tuning_block_pattern = tuning_blk_pattern_8bit; | |
351 | size = sizeof(tuning_blk_pattern_8bit); | |
352 | } else if (mmc->bus_width == 4) { | |
353 | tuning_block_pattern = tuning_blk_pattern_4bit; | |
354 | size = sizeof(tuning_blk_pattern_4bit); | |
355 | } else { | |
356 | return -EINVAL; | |
357 | } | |
358 | ||
359 | ALLOC_CACHE_ALIGN_BUFFER(u8, data_buf, size); | |
360 | ||
361 | cmd.cmdidx = opcode; | |
362 | cmd.cmdarg = 0; | |
363 | cmd.resp_type = MMC_RSP_R1; | |
364 | ||
365 | data.dest = (void *)data_buf; | |
366 | data.blocks = 1; | |
367 | data.blocksize = size; | |
368 | data.flags = MMC_DATA_READ; | |
369 | ||
370 | err = mmc_send_cmd(mmc, &cmd, &data); | |
371 | if (err) | |
372 | return err; | |
373 | ||
374 | if (memcmp(data_buf, tuning_block_pattern, size)) | |
375 | return -EIO; | |
376 | ||
377 | return 0; | |
378 | } | |
379 | #endif | |
380 | ||
381 | static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start, | |
382 | lbaint_t blkcnt) | |
383 | { | |
384 | struct mmc_cmd cmd; | |
385 | struct mmc_data data; | |
386 | ||
387 | if (blkcnt > 1) | |
388 | cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK; | |
389 | else | |
390 | cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK; | |
391 | ||
392 | if (mmc->high_capacity) | |
393 | cmd.cmdarg = start; | |
394 | else | |
395 | cmd.cmdarg = start * mmc->read_bl_len; | |
396 | ||
397 | cmd.resp_type = MMC_RSP_R1; | |
398 | ||
399 | data.dest = dst; | |
400 | data.blocks = blkcnt; | |
401 | data.blocksize = mmc->read_bl_len; | |
402 | data.flags = MMC_DATA_READ; | |
403 | ||
404 | if (mmc_send_cmd(mmc, &cmd, &data)) | |
405 | return 0; | |
406 | ||
407 | if (blkcnt > 1) { | |
408 | cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION; | |
409 | cmd.cmdarg = 0; | |
410 | cmd.resp_type = MMC_RSP_R1b; | |
411 | if (mmc_send_cmd(mmc, &cmd, NULL)) { | |
412 | #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) | |
413 | pr_err("mmc fail to send stop cmd\n"); | |
414 | #endif | |
415 | return 0; | |
416 | } | |
417 | } | |
418 | ||
419 | return blkcnt; | |
420 | } | |
421 | ||
422 | #if CONFIG_IS_ENABLED(BLK) | |
423 | ulong mmc_bread(struct udevice *dev, lbaint_t start, lbaint_t blkcnt, void *dst) | |
424 | #else | |
425 | ulong mmc_bread(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt, | |
426 | void *dst) | |
427 | #endif | |
428 | { | |
429 | #if CONFIG_IS_ENABLED(BLK) | |
430 | struct blk_desc *block_dev = dev_get_uclass_platdata(dev); | |
431 | #endif | |
432 | int dev_num = block_dev->devnum; | |
433 | int err; | |
434 | lbaint_t cur, blocks_todo = blkcnt; | |
435 | ||
436 | if (blkcnt == 0) | |
437 | return 0; | |
438 | ||
439 | struct mmc *mmc = find_mmc_device(dev_num); | |
440 | if (!mmc) | |
441 | return 0; | |
442 | ||
443 | if (CONFIG_IS_ENABLED(MMC_TINY)) | |
444 | err = mmc_switch_part(mmc, block_dev->hwpart); | |
445 | else | |
446 | err = blk_dselect_hwpart(block_dev, block_dev->hwpart); | |
447 | ||
448 | if (err < 0) | |
449 | return 0; | |
450 | ||
451 | if ((start + blkcnt) > block_dev->lba) { | |
452 | #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) | |
453 | pr_err("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n", | |
454 | start + blkcnt, block_dev->lba); | |
455 | #endif | |
456 | return 0; | |
457 | } | |
458 | ||
459 | if (mmc_set_blocklen(mmc, mmc->read_bl_len)) { | |
460 | pr_debug("%s: Failed to set blocklen\n", __func__); | |
461 | return 0; | |
462 | } | |
463 | ||
464 | do { | |
465 | cur = (blocks_todo > mmc->cfg->b_max) ? | |
466 | mmc->cfg->b_max : blocks_todo; | |
467 | if (mmc_read_blocks(mmc, dst, start, cur) != cur) { | |
468 | pr_debug("%s: Failed to read blocks\n", __func__); | |
469 | return 0; | |
470 | } | |
471 | blocks_todo -= cur; | |
472 | start += cur; | |
473 | dst += cur * mmc->read_bl_len; | |
474 | } while (blocks_todo > 0); | |
475 | ||
476 | return blkcnt; | |
477 | } | |
478 | ||
479 | static int mmc_go_idle(struct mmc *mmc) | |
480 | { | |
481 | struct mmc_cmd cmd; | |
482 | int err; | |
483 | ||
484 | udelay(1000); | |
485 | ||
486 | cmd.cmdidx = MMC_CMD_GO_IDLE_STATE; | |
487 | cmd.cmdarg = 0; | |
488 | cmd.resp_type = MMC_RSP_NONE; | |
489 | ||
490 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
491 | ||
492 | if (err) | |
493 | return err; | |
494 | ||
495 | udelay(2000); | |
496 | ||
497 | return 0; | |
498 | } | |
499 | ||
500 | #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) | |
501 | static int mmc_switch_voltage(struct mmc *mmc, int signal_voltage) | |
502 | { | |
503 | struct mmc_cmd cmd; | |
504 | int err = 0; | |
505 | ||
506 | /* | |
507 | * Send CMD11 only if the request is to switch the card to | |
508 | * 1.8V signalling. | |
509 | */ | |
510 | if (signal_voltage == MMC_SIGNAL_VOLTAGE_330) | |
511 | return mmc_set_signal_voltage(mmc, signal_voltage); | |
512 | ||
513 | cmd.cmdidx = SD_CMD_SWITCH_UHS18V; | |
514 | cmd.cmdarg = 0; | |
515 | cmd.resp_type = MMC_RSP_R1; | |
516 | ||
517 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
518 | if (err) | |
519 | return err; | |
520 | ||
521 | if (!mmc_host_is_spi(mmc) && (cmd.response[0] & MMC_STATUS_ERROR)) | |
522 | return -EIO; | |
523 | ||
524 | /* | |
525 | * The card should drive cmd and dat[0:3] low immediately | |
526 | * after the response of cmd11, but wait 100 us to be sure | |
527 | */ | |
528 | err = mmc_wait_dat0(mmc, 0, 100); | |
529 | if (err == -ENOSYS) | |
530 | udelay(100); | |
531 | else if (err) | |
532 | return -ETIMEDOUT; | |
533 | ||
534 | /* | |
535 | * During a signal voltage level switch, the clock must be gated | |
536 | * for 5 ms according to the SD spec | |
537 | */ | |
538 | mmc_set_clock(mmc, mmc->clock, true); | |
539 | ||
540 | err = mmc_set_signal_voltage(mmc, signal_voltage); | |
541 | if (err) | |
542 | return err; | |
543 | ||
544 | /* Keep clock gated for at least 10 ms, though spec only says 5 ms */ | |
545 | mdelay(10); | |
546 | mmc_set_clock(mmc, mmc->clock, false); | |
547 | ||
548 | /* | |
549 | * Failure to switch is indicated by the card holding | |
550 | * dat[0:3] low. Wait for at least 1 ms according to spec | |
551 | */ | |
552 | err = mmc_wait_dat0(mmc, 1, 1000); | |
553 | if (err == -ENOSYS) | |
554 | udelay(1000); | |
555 | else if (err) | |
556 | return -ETIMEDOUT; | |
557 | ||
558 | return 0; | |
559 | } | |
560 | #endif | |
561 | ||
562 | static int sd_send_op_cond(struct mmc *mmc, bool uhs_en) | |
563 | { | |
564 | int timeout = 1000; | |
565 | int err; | |
566 | struct mmc_cmd cmd; | |
567 | ||
568 | while (1) { | |
569 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
570 | cmd.resp_type = MMC_RSP_R1; | |
571 | cmd.cmdarg = 0; | |
572 | ||
573 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
574 | ||
575 | if (err) | |
576 | return err; | |
577 | ||
578 | cmd.cmdidx = SD_CMD_APP_SEND_OP_COND; | |
579 | cmd.resp_type = MMC_RSP_R3; | |
580 | ||
581 | /* | |
582 | * Most cards do not answer if some reserved bits | |
583 | * in the ocr are set. However, Some controller | |
584 | * can set bit 7 (reserved for low voltages), but | |
585 | * how to manage low voltages SD card is not yet | |
586 | * specified. | |
587 | */ | |
588 | cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 : | |
589 | (mmc->cfg->voltages & 0xff8000); | |
590 | ||
591 | if (mmc->version == SD_VERSION_2) | |
592 | cmd.cmdarg |= OCR_HCS; | |
593 | ||
594 | if (uhs_en) | |
595 | cmd.cmdarg |= OCR_S18R; | |
596 | ||
597 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
598 | ||
599 | if (err) | |
600 | return err; | |
601 | ||
602 | if (cmd.response[0] & OCR_BUSY) | |
603 | break; | |
604 | ||
605 | if (timeout-- <= 0) | |
606 | return -EOPNOTSUPP; | |
607 | ||
608 | udelay(1000); | |
609 | } | |
610 | ||
611 | if (mmc->version != SD_VERSION_2) | |
612 | mmc->version = SD_VERSION_1_0; | |
613 | ||
614 | if (mmc_host_is_spi(mmc)) { /* read OCR for spi */ | |
615 | cmd.cmdidx = MMC_CMD_SPI_READ_OCR; | |
616 | cmd.resp_type = MMC_RSP_R3; | |
617 | cmd.cmdarg = 0; | |
618 | ||
619 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
620 | ||
621 | if (err) | |
622 | return err; | |
623 | } | |
624 | ||
625 | mmc->ocr = cmd.response[0]; | |
626 | ||
627 | #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) | |
628 | if (uhs_en && !(mmc_host_is_spi(mmc)) && (cmd.response[0] & 0x41000000) | |
629 | == 0x41000000) { | |
630 | err = mmc_switch_voltage(mmc, MMC_SIGNAL_VOLTAGE_180); | |
631 | if (err) | |
632 | return err; | |
633 | } | |
634 | #endif | |
635 | ||
636 | mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); | |
637 | mmc->rca = 0; | |
638 | ||
639 | return 0; | |
640 | } | |
641 | ||
642 | static int mmc_send_op_cond_iter(struct mmc *mmc, int use_arg) | |
643 | { | |
644 | struct mmc_cmd cmd; | |
645 | int err; | |
646 | ||
647 | cmd.cmdidx = MMC_CMD_SEND_OP_COND; | |
648 | cmd.resp_type = MMC_RSP_R3; | |
649 | cmd.cmdarg = 0; | |
650 | if (use_arg && !mmc_host_is_spi(mmc)) | |
651 | cmd.cmdarg = OCR_HCS | | |
652 | (mmc->cfg->voltages & | |
653 | (mmc->ocr & OCR_VOLTAGE_MASK)) | | |
654 | (mmc->ocr & OCR_ACCESS_MODE); | |
655 | ||
656 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
657 | if (err) | |
658 | return err; | |
659 | mmc->ocr = cmd.response[0]; | |
660 | return 0; | |
661 | } | |
662 | ||
663 | static int mmc_send_op_cond(struct mmc *mmc) | |
664 | { | |
665 | int err, i; | |
666 | ||
667 | /* Some cards seem to need this */ | |
668 | mmc_go_idle(mmc); | |
669 | ||
670 | /* Asking to the card its capabilities */ | |
671 | for (i = 0; i < 2; i++) { | |
672 | err = mmc_send_op_cond_iter(mmc, i != 0); | |
673 | if (err) | |
674 | return err; | |
675 | ||
676 | /* exit if not busy (flag seems to be inverted) */ | |
677 | if (mmc->ocr & OCR_BUSY) | |
678 | break; | |
679 | } | |
680 | mmc->op_cond_pending = 1; | |
681 | return 0; | |
682 | } | |
683 | ||
684 | static int mmc_complete_op_cond(struct mmc *mmc) | |
685 | { | |
686 | struct mmc_cmd cmd; | |
687 | int timeout = 1000; | |
688 | uint start; | |
689 | int err; | |
690 | ||
691 | mmc->op_cond_pending = 0; | |
692 | if (!(mmc->ocr & OCR_BUSY)) { | |
693 | /* Some cards seem to need this */ | |
694 | mmc_go_idle(mmc); | |
695 | ||
696 | start = get_timer(0); | |
697 | while (1) { | |
698 | err = mmc_send_op_cond_iter(mmc, 1); | |
699 | if (err) | |
700 | return err; | |
701 | if (mmc->ocr & OCR_BUSY) | |
702 | break; | |
703 | if (get_timer(start) > timeout) | |
704 | return -EOPNOTSUPP; | |
705 | udelay(100); | |
706 | } | |
707 | } | |
708 | ||
709 | if (mmc_host_is_spi(mmc)) { /* read OCR for spi */ | |
710 | cmd.cmdidx = MMC_CMD_SPI_READ_OCR; | |
711 | cmd.resp_type = MMC_RSP_R3; | |
712 | cmd.cmdarg = 0; | |
713 | ||
714 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
715 | ||
716 | if (err) | |
717 | return err; | |
718 | ||
719 | mmc->ocr = cmd.response[0]; | |
720 | } | |
721 | ||
722 | mmc->version = MMC_VERSION_UNKNOWN; | |
723 | ||
724 | mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS); | |
725 | mmc->rca = 1; | |
726 | ||
727 | return 0; | |
728 | } | |
729 | ||
730 | ||
731 | static int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd) | |
732 | { | |
733 | struct mmc_cmd cmd; | |
734 | struct mmc_data data; | |
735 | int err; | |
736 | ||
737 | /* Get the Card Status Register */ | |
738 | cmd.cmdidx = MMC_CMD_SEND_EXT_CSD; | |
739 | cmd.resp_type = MMC_RSP_R1; | |
740 | cmd.cmdarg = 0; | |
741 | ||
742 | data.dest = (char *)ext_csd; | |
743 | data.blocks = 1; | |
744 | data.blocksize = MMC_MAX_BLOCK_LEN; | |
745 | data.flags = MMC_DATA_READ; | |
746 | ||
747 | err = mmc_send_cmd(mmc, &cmd, &data); | |
748 | ||
749 | return err; | |
750 | } | |
751 | ||
752 | int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value) | |
753 | { | |
754 | struct mmc_cmd cmd; | |
755 | int timeout = 1000; | |
756 | int retries = 3; | |
757 | int ret; | |
758 | ||
759 | cmd.cmdidx = MMC_CMD_SWITCH; | |
760 | cmd.resp_type = MMC_RSP_R1b; | |
761 | cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) | | |
762 | (index << 16) | | |
763 | (value << 8); | |
764 | ||
765 | while (retries > 0) { | |
766 | ret = mmc_send_cmd(mmc, &cmd, NULL); | |
767 | ||
768 | /* Waiting for the ready status */ | |
769 | if (!ret) { | |
770 | ret = mmc_send_status(mmc, timeout); | |
771 | return ret; | |
772 | } | |
773 | ||
774 | retries--; | |
775 | } | |
776 | ||
777 | return ret; | |
778 | ||
779 | } | |
780 | ||
781 | static int mmc_set_card_speed(struct mmc *mmc, enum bus_mode mode) | |
782 | { | |
783 | int err; | |
784 | int speed_bits; | |
785 | ||
786 | ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN); | |
787 | ||
788 | switch (mode) { | |
789 | case MMC_HS: | |
790 | case MMC_HS_52: | |
791 | case MMC_DDR_52: | |
792 | speed_bits = EXT_CSD_TIMING_HS; | |
793 | break; | |
794 | #if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) | |
795 | case MMC_HS_200: | |
796 | speed_bits = EXT_CSD_TIMING_HS200; | |
797 | break; | |
798 | #endif | |
799 | case MMC_LEGACY: | |
800 | speed_bits = EXT_CSD_TIMING_LEGACY; | |
801 | break; | |
802 | default: | |
803 | return -EINVAL; | |
804 | } | |
805 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, | |
806 | speed_bits); | |
807 | if (err) | |
808 | return err; | |
809 | ||
810 | if ((mode == MMC_HS) || (mode == MMC_HS_52)) { | |
811 | /* Now check to see that it worked */ | |
812 | err = mmc_send_ext_csd(mmc, test_csd); | |
813 | if (err) | |
814 | return err; | |
815 | ||
816 | /* No high-speed support */ | |
817 | if (!test_csd[EXT_CSD_HS_TIMING]) | |
818 | return -ENOTSUPP; | |
819 | } | |
820 | ||
821 | return 0; | |
822 | } | |
823 | ||
824 | static int mmc_get_capabilities(struct mmc *mmc) | |
825 | { | |
826 | u8 *ext_csd = mmc->ext_csd; | |
827 | char cardtype; | |
828 | ||
829 | mmc->card_caps = MMC_MODE_1BIT | MMC_CAP(MMC_LEGACY); | |
830 | ||
831 | if (mmc_host_is_spi(mmc)) | |
832 | return 0; | |
833 | ||
834 | /* Only version 4 supports high-speed */ | |
835 | if (mmc->version < MMC_VERSION_4) | |
836 | return 0; | |
837 | ||
838 | if (!ext_csd) { | |
839 | pr_err("No ext_csd found!\n"); /* this should enver happen */ | |
840 | return -ENOTSUPP; | |
841 | } | |
842 | ||
843 | mmc->card_caps |= MMC_MODE_4BIT | MMC_MODE_8BIT; | |
844 | ||
845 | cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0x3f; | |
846 | mmc->cardtype = cardtype; | |
847 | ||
848 | #if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) | |
849 | if (cardtype & (EXT_CSD_CARD_TYPE_HS200_1_2V | | |
850 | EXT_CSD_CARD_TYPE_HS200_1_8V)) { | |
851 | mmc->card_caps |= MMC_MODE_HS200; | |
852 | } | |
853 | #endif | |
854 | if (cardtype & EXT_CSD_CARD_TYPE_52) { | |
855 | if (cardtype & EXT_CSD_CARD_TYPE_DDR_52) | |
856 | mmc->card_caps |= MMC_MODE_DDR_52MHz; | |
857 | mmc->card_caps |= MMC_MODE_HS_52MHz; | |
858 | } | |
859 | if (cardtype & EXT_CSD_CARD_TYPE_26) | |
860 | mmc->card_caps |= MMC_MODE_HS; | |
861 | ||
862 | return 0; | |
863 | } | |
864 | ||
865 | static int mmc_set_capacity(struct mmc *mmc, int part_num) | |
866 | { | |
867 | switch (part_num) { | |
868 | case 0: | |
869 | mmc->capacity = mmc->capacity_user; | |
870 | break; | |
871 | case 1: | |
872 | case 2: | |
873 | mmc->capacity = mmc->capacity_boot; | |
874 | break; | |
875 | case 3: | |
876 | mmc->capacity = mmc->capacity_rpmb; | |
877 | break; | |
878 | case 4: | |
879 | case 5: | |
880 | case 6: | |
881 | case 7: | |
882 | mmc->capacity = mmc->capacity_gp[part_num - 4]; | |
883 | break; | |
884 | default: | |
885 | return -1; | |
886 | } | |
887 | ||
888 | mmc_get_blk_desc(mmc)->lba = lldiv(mmc->capacity, mmc->read_bl_len); | |
889 | ||
890 | return 0; | |
891 | } | |
892 | ||
893 | #if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) | |
894 | static int mmc_boot_part_access_chk(struct mmc *mmc, unsigned int part_num) | |
895 | { | |
896 | int forbidden = 0; | |
897 | bool change = false; | |
898 | ||
899 | if (part_num & PART_ACCESS_MASK) | |
900 | forbidden = MMC_CAP(MMC_HS_200); | |
901 | ||
902 | if (MMC_CAP(mmc->selected_mode) & forbidden) { | |
903 | pr_debug("selected mode (%s) is forbidden for part %d\n", | |
904 | mmc_mode_name(mmc->selected_mode), part_num); | |
905 | change = true; | |
906 | } else if (mmc->selected_mode != mmc->best_mode) { | |
907 | pr_debug("selected mode is not optimal\n"); | |
908 | change = true; | |
909 | } | |
910 | ||
911 | if (change) | |
912 | return mmc_select_mode_and_width(mmc, | |
913 | mmc->card_caps & ~forbidden); | |
914 | ||
915 | return 0; | |
916 | } | |
917 | #else | |
918 | static inline int mmc_boot_part_access_chk(struct mmc *mmc, | |
919 | unsigned int part_num) | |
920 | { | |
921 | return 0; | |
922 | } | |
923 | #endif | |
924 | ||
925 | int mmc_switch_part(struct mmc *mmc, unsigned int part_num) | |
926 | { | |
927 | int ret; | |
928 | ||
929 | ret = mmc_boot_part_access_chk(mmc, part_num); | |
930 | if (ret) | |
931 | return ret; | |
932 | ||
933 | ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF, | |
934 | (mmc->part_config & ~PART_ACCESS_MASK) | |
935 | | (part_num & PART_ACCESS_MASK)); | |
936 | ||
937 | /* | |
938 | * Set the capacity if the switch succeeded or was intended | |
939 | * to return to representing the raw device. | |
940 | */ | |
941 | if ((ret == 0) || ((ret == -ENODEV) && (part_num == 0))) { | |
942 | ret = mmc_set_capacity(mmc, part_num); | |
943 | mmc_get_blk_desc(mmc)->hwpart = part_num; | |
944 | } | |
945 | ||
946 | return ret; | |
947 | } | |
948 | ||
949 | #if CONFIG_IS_ENABLED(MMC_HW_PARTITIONING) | |
950 | int mmc_hwpart_config(struct mmc *mmc, | |
951 | const struct mmc_hwpart_conf *conf, | |
952 | enum mmc_hwpart_conf_mode mode) | |
953 | { | |
954 | u8 part_attrs = 0; | |
955 | u32 enh_size_mult; | |
956 | u32 enh_start_addr; | |
957 | u32 gp_size_mult[4]; | |
958 | u32 max_enh_size_mult; | |
959 | u32 tot_enh_size_mult = 0; | |
960 | u8 wr_rel_set; | |
961 | int i, pidx, err; | |
962 | ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN); | |
963 | ||
964 | if (mode < MMC_HWPART_CONF_CHECK || mode > MMC_HWPART_CONF_COMPLETE) | |
965 | return -EINVAL; | |
966 | ||
967 | if (IS_SD(mmc) || (mmc->version < MMC_VERSION_4_41)) { | |
968 | pr_err("eMMC >= 4.4 required for enhanced user data area\n"); | |
969 | return -EMEDIUMTYPE; | |
970 | } | |
971 | ||
972 | if (!(mmc->part_support & PART_SUPPORT)) { | |
973 | pr_err("Card does not support partitioning\n"); | |
974 | return -EMEDIUMTYPE; | |
975 | } | |
976 | ||
977 | if (!mmc->hc_wp_grp_size) { | |
978 | pr_err("Card does not define HC WP group size\n"); | |
979 | return -EMEDIUMTYPE; | |
980 | } | |
981 | ||
982 | /* check partition alignment and total enhanced size */ | |
983 | if (conf->user.enh_size) { | |
984 | if (conf->user.enh_size % mmc->hc_wp_grp_size || | |
985 | conf->user.enh_start % mmc->hc_wp_grp_size) { | |
986 | pr_err("User data enhanced area not HC WP group " | |
987 | "size aligned\n"); | |
988 | return -EINVAL; | |
989 | } | |
990 | part_attrs |= EXT_CSD_ENH_USR; | |
991 | enh_size_mult = conf->user.enh_size / mmc->hc_wp_grp_size; | |
992 | if (mmc->high_capacity) { | |
993 | enh_start_addr = conf->user.enh_start; | |
994 | } else { | |
995 | enh_start_addr = (conf->user.enh_start << 9); | |
996 | } | |
997 | } else { | |
998 | enh_size_mult = 0; | |
999 | enh_start_addr = 0; | |
1000 | } | |
1001 | tot_enh_size_mult += enh_size_mult; | |
1002 | ||
1003 | for (pidx = 0; pidx < 4; pidx++) { | |
1004 | if (conf->gp_part[pidx].size % mmc->hc_wp_grp_size) { | |
1005 | pr_err("GP%i partition not HC WP group size " | |
1006 | "aligned\n", pidx+1); | |
1007 | return -EINVAL; | |
1008 | } | |
1009 | gp_size_mult[pidx] = conf->gp_part[pidx].size / mmc->hc_wp_grp_size; | |
1010 | if (conf->gp_part[pidx].size && conf->gp_part[pidx].enhanced) { | |
1011 | part_attrs |= EXT_CSD_ENH_GP(pidx); | |
1012 | tot_enh_size_mult += gp_size_mult[pidx]; | |
1013 | } | |
1014 | } | |
1015 | ||
1016 | if (part_attrs && ! (mmc->part_support & ENHNCD_SUPPORT)) { | |
1017 | pr_err("Card does not support enhanced attribute\n"); | |
1018 | return -EMEDIUMTYPE; | |
1019 | } | |
1020 | ||
1021 | err = mmc_send_ext_csd(mmc, ext_csd); | |
1022 | if (err) | |
1023 | return err; | |
1024 | ||
1025 | max_enh_size_mult = | |
1026 | (ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT+2] << 16) + | |
1027 | (ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT+1] << 8) + | |
1028 | ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT]; | |
1029 | if (tot_enh_size_mult > max_enh_size_mult) { | |
1030 | pr_err("Total enhanced size exceeds maximum (%u > %u)\n", | |
1031 | tot_enh_size_mult, max_enh_size_mult); | |
1032 | return -EMEDIUMTYPE; | |
1033 | } | |
1034 | ||
1035 | /* The default value of EXT_CSD_WR_REL_SET is device | |
1036 | * dependent, the values can only be changed if the | |
1037 | * EXT_CSD_HS_CTRL_REL bit is set. The values can be | |
1038 | * changed only once and before partitioning is completed. */ | |
1039 | wr_rel_set = ext_csd[EXT_CSD_WR_REL_SET]; | |
1040 | if (conf->user.wr_rel_change) { | |
1041 | if (conf->user.wr_rel_set) | |
1042 | wr_rel_set |= EXT_CSD_WR_DATA_REL_USR; | |
1043 | else | |
1044 | wr_rel_set &= ~EXT_CSD_WR_DATA_REL_USR; | |
1045 | } | |
1046 | for (pidx = 0; pidx < 4; pidx++) { | |
1047 | if (conf->gp_part[pidx].wr_rel_change) { | |
1048 | if (conf->gp_part[pidx].wr_rel_set) | |
1049 | wr_rel_set |= EXT_CSD_WR_DATA_REL_GP(pidx); | |
1050 | else | |
1051 | wr_rel_set &= ~EXT_CSD_WR_DATA_REL_GP(pidx); | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | if (wr_rel_set != ext_csd[EXT_CSD_WR_REL_SET] && | |
1056 | !(ext_csd[EXT_CSD_WR_REL_PARAM] & EXT_CSD_HS_CTRL_REL)) { | |
1057 | puts("Card does not support host controlled partition write " | |
1058 | "reliability settings\n"); | |
1059 | return -EMEDIUMTYPE; | |
1060 | } | |
1061 | ||
1062 | if (ext_csd[EXT_CSD_PARTITION_SETTING] & | |
1063 | EXT_CSD_PARTITION_SETTING_COMPLETED) { | |
1064 | pr_err("Card already partitioned\n"); | |
1065 | return -EPERM; | |
1066 | } | |
1067 | ||
1068 | if (mode == MMC_HWPART_CONF_CHECK) | |
1069 | return 0; | |
1070 | ||
1071 | /* Partitioning requires high-capacity size definitions */ | |
1072 | if (!(ext_csd[EXT_CSD_ERASE_GROUP_DEF] & 0x01)) { | |
1073 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
1074 | EXT_CSD_ERASE_GROUP_DEF, 1); | |
1075 | ||
1076 | if (err) | |
1077 | return err; | |
1078 | ||
1079 | ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1; | |
1080 | ||
1081 | /* update erase group size to be high-capacity */ | |
1082 | mmc->erase_grp_size = | |
1083 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 1024; | |
1084 | ||
1085 | } | |
1086 | ||
1087 | /* all OK, write the configuration */ | |
1088 | for (i = 0; i < 4; i++) { | |
1089 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
1090 | EXT_CSD_ENH_START_ADDR+i, | |
1091 | (enh_start_addr >> (i*8)) & 0xFF); | |
1092 | if (err) | |
1093 | return err; | |
1094 | } | |
1095 | for (i = 0; i < 3; i++) { | |
1096 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
1097 | EXT_CSD_ENH_SIZE_MULT+i, | |
1098 | (enh_size_mult >> (i*8)) & 0xFF); | |
1099 | if (err) | |
1100 | return err; | |
1101 | } | |
1102 | for (pidx = 0; pidx < 4; pidx++) { | |
1103 | for (i = 0; i < 3; i++) { | |
1104 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
1105 | EXT_CSD_GP_SIZE_MULT+pidx*3+i, | |
1106 | (gp_size_mult[pidx] >> (i*8)) & 0xFF); | |
1107 | if (err) | |
1108 | return err; | |
1109 | } | |
1110 | } | |
1111 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
1112 | EXT_CSD_PARTITIONS_ATTRIBUTE, part_attrs); | |
1113 | if (err) | |
1114 | return err; | |
1115 | ||
1116 | if (mode == MMC_HWPART_CONF_SET) | |
1117 | return 0; | |
1118 | ||
1119 | /* The WR_REL_SET is a write-once register but shall be | |
1120 | * written before setting PART_SETTING_COMPLETED. As it is | |
1121 | * write-once we can only write it when completing the | |
1122 | * partitioning. */ | |
1123 | if (wr_rel_set != ext_csd[EXT_CSD_WR_REL_SET]) { | |
1124 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
1125 | EXT_CSD_WR_REL_SET, wr_rel_set); | |
1126 | if (err) | |
1127 | return err; | |
1128 | } | |
1129 | ||
1130 | /* Setting PART_SETTING_COMPLETED confirms the partition | |
1131 | * configuration but it only becomes effective after power | |
1132 | * cycle, so we do not adjust the partition related settings | |
1133 | * in the mmc struct. */ | |
1134 | ||
1135 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
1136 | EXT_CSD_PARTITION_SETTING, | |
1137 | EXT_CSD_PARTITION_SETTING_COMPLETED); | |
1138 | if (err) | |
1139 | return err; | |
1140 | ||
1141 | return 0; | |
1142 | } | |
1143 | #endif | |
1144 | ||
1145 | #if !CONFIG_IS_ENABLED(DM_MMC) | |
1146 | int mmc_getcd(struct mmc *mmc) | |
1147 | { | |
1148 | int cd; | |
1149 | ||
1150 | cd = board_mmc_getcd(mmc); | |
1151 | ||
1152 | if (cd < 0) { | |
1153 | if (mmc->cfg->ops->getcd) | |
1154 | cd = mmc->cfg->ops->getcd(mmc); | |
1155 | else | |
1156 | cd = 1; | |
1157 | } | |
1158 | ||
1159 | return cd; | |
1160 | } | |
1161 | #endif | |
1162 | ||
1163 | static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp) | |
1164 | { | |
1165 | struct mmc_cmd cmd; | |
1166 | struct mmc_data data; | |
1167 | ||
1168 | /* Switch the frequency */ | |
1169 | cmd.cmdidx = SD_CMD_SWITCH_FUNC; | |
1170 | cmd.resp_type = MMC_RSP_R1; | |
1171 | cmd.cmdarg = (mode << 31) | 0xffffff; | |
1172 | cmd.cmdarg &= ~(0xf << (group * 4)); | |
1173 | cmd.cmdarg |= value << (group * 4); | |
1174 | ||
1175 | data.dest = (char *)resp; | |
1176 | data.blocksize = 64; | |
1177 | data.blocks = 1; | |
1178 | data.flags = MMC_DATA_READ; | |
1179 | ||
1180 | return mmc_send_cmd(mmc, &cmd, &data); | |
1181 | } | |
1182 | ||
1183 | ||
1184 | static int sd_get_capabilities(struct mmc *mmc) | |
1185 | { | |
1186 | int err; | |
1187 | struct mmc_cmd cmd; | |
1188 | ALLOC_CACHE_ALIGN_BUFFER(__be32, scr, 2); | |
1189 | ALLOC_CACHE_ALIGN_BUFFER(__be32, switch_status, 16); | |
1190 | struct mmc_data data; | |
1191 | int timeout; | |
1192 | #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) | |
1193 | u32 sd3_bus_mode; | |
1194 | #endif | |
1195 | ||
1196 | mmc->card_caps = MMC_MODE_1BIT | MMC_CAP(SD_LEGACY); | |
1197 | ||
1198 | if (mmc_host_is_spi(mmc)) | |
1199 | return 0; | |
1200 | ||
1201 | /* Read the SCR to find out if this card supports higher speeds */ | |
1202 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
1203 | cmd.resp_type = MMC_RSP_R1; | |
1204 | cmd.cmdarg = mmc->rca << 16; | |
1205 | ||
1206 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
1207 | ||
1208 | if (err) | |
1209 | return err; | |
1210 | ||
1211 | cmd.cmdidx = SD_CMD_APP_SEND_SCR; | |
1212 | cmd.resp_type = MMC_RSP_R1; | |
1213 | cmd.cmdarg = 0; | |
1214 | ||
1215 | timeout = 3; | |
1216 | ||
1217 | retry_scr: | |
1218 | data.dest = (char *)scr; | |
1219 | data.blocksize = 8; | |
1220 | data.blocks = 1; | |
1221 | data.flags = MMC_DATA_READ; | |
1222 | ||
1223 | err = mmc_send_cmd(mmc, &cmd, &data); | |
1224 | ||
1225 | if (err) { | |
1226 | if (timeout--) | |
1227 | goto retry_scr; | |
1228 | ||
1229 | return err; | |
1230 | } | |
1231 | ||
1232 | mmc->scr[0] = __be32_to_cpu(scr[0]); | |
1233 | mmc->scr[1] = __be32_to_cpu(scr[1]); | |
1234 | ||
1235 | switch ((mmc->scr[0] >> 24) & 0xf) { | |
1236 | case 0: | |
1237 | mmc->version = SD_VERSION_1_0; | |
1238 | break; | |
1239 | case 1: | |
1240 | mmc->version = SD_VERSION_1_10; | |
1241 | break; | |
1242 | case 2: | |
1243 | mmc->version = SD_VERSION_2; | |
1244 | if ((mmc->scr[0] >> 15) & 0x1) | |
1245 | mmc->version = SD_VERSION_3; | |
1246 | break; | |
1247 | default: | |
1248 | mmc->version = SD_VERSION_1_0; | |
1249 | break; | |
1250 | } | |
1251 | ||
1252 | if (mmc->scr[0] & SD_DATA_4BIT) | |
1253 | mmc->card_caps |= MMC_MODE_4BIT; | |
1254 | ||
1255 | /* Version 1.0 doesn't support switching */ | |
1256 | if (mmc->version == SD_VERSION_1_0) | |
1257 | return 0; | |
1258 | ||
1259 | timeout = 4; | |
1260 | while (timeout--) { | |
1261 | err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1, | |
1262 | (u8 *)switch_status); | |
1263 | ||
1264 | if (err) | |
1265 | return err; | |
1266 | ||
1267 | /* The high-speed function is busy. Try again */ | |
1268 | if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY)) | |
1269 | break; | |
1270 | } | |
1271 | ||
1272 | /* If high-speed isn't supported, we return */ | |
1273 | if (__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED) | |
1274 | mmc->card_caps |= MMC_CAP(SD_HS); | |
1275 | ||
1276 | #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) | |
1277 | /* Version before 3.0 don't support UHS modes */ | |
1278 | if (mmc->version < SD_VERSION_3) | |
1279 | return 0; | |
1280 | ||
1281 | sd3_bus_mode = __be32_to_cpu(switch_status[3]) >> 16 & 0x1f; | |
1282 | if (sd3_bus_mode & SD_MODE_UHS_SDR104) | |
1283 | mmc->card_caps |= MMC_CAP(UHS_SDR104); | |
1284 | if (sd3_bus_mode & SD_MODE_UHS_SDR50) | |
1285 | mmc->card_caps |= MMC_CAP(UHS_SDR50); | |
1286 | if (sd3_bus_mode & SD_MODE_UHS_SDR25) | |
1287 | mmc->card_caps |= MMC_CAP(UHS_SDR25); | |
1288 | if (sd3_bus_mode & SD_MODE_UHS_SDR12) | |
1289 | mmc->card_caps |= MMC_CAP(UHS_SDR12); | |
1290 | if (sd3_bus_mode & SD_MODE_UHS_DDR50) | |
1291 | mmc->card_caps |= MMC_CAP(UHS_DDR50); | |
1292 | #endif | |
1293 | ||
1294 | return 0; | |
1295 | } | |
1296 | ||
1297 | static int sd_set_card_speed(struct mmc *mmc, enum bus_mode mode) | |
1298 | { | |
1299 | int err; | |
1300 | ||
1301 | ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16); | |
1302 | int speed; | |
1303 | ||
1304 | switch (mode) { | |
1305 | case SD_LEGACY: | |
1306 | speed = UHS_SDR12_BUS_SPEED; | |
1307 | break; | |
1308 | case SD_HS: | |
1309 | speed = HIGH_SPEED_BUS_SPEED; | |
1310 | break; | |
1311 | #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) | |
1312 | case UHS_SDR12: | |
1313 | speed = UHS_SDR12_BUS_SPEED; | |
1314 | break; | |
1315 | case UHS_SDR25: | |
1316 | speed = UHS_SDR25_BUS_SPEED; | |
1317 | break; | |
1318 | case UHS_SDR50: | |
1319 | speed = UHS_SDR50_BUS_SPEED; | |
1320 | break; | |
1321 | case UHS_DDR50: | |
1322 | speed = UHS_DDR50_BUS_SPEED; | |
1323 | break; | |
1324 | case UHS_SDR104: | |
1325 | speed = UHS_SDR104_BUS_SPEED; | |
1326 | break; | |
1327 | #endif | |
1328 | default: | |
1329 | return -EINVAL; | |
1330 | } | |
1331 | ||
1332 | err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, speed, (u8 *)switch_status); | |
1333 | if (err) | |
1334 | return err; | |
1335 | ||
1336 | if (((__be32_to_cpu(switch_status[4]) >> 24) & 0xF) != speed) | |
1337 | return -ENOTSUPP; | |
1338 | ||
1339 | return 0; | |
1340 | } | |
1341 | ||
1342 | int sd_select_bus_width(struct mmc *mmc, int w) | |
1343 | { | |
1344 | int err; | |
1345 | struct mmc_cmd cmd; | |
1346 | ||
1347 | if ((w != 4) && (w != 1)) | |
1348 | return -EINVAL; | |
1349 | ||
1350 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
1351 | cmd.resp_type = MMC_RSP_R1; | |
1352 | cmd.cmdarg = mmc->rca << 16; | |
1353 | ||
1354 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
1355 | if (err) | |
1356 | return err; | |
1357 | ||
1358 | cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH; | |
1359 | cmd.resp_type = MMC_RSP_R1; | |
1360 | if (w == 4) | |
1361 | cmd.cmdarg = 2; | |
1362 | else if (w == 1) | |
1363 | cmd.cmdarg = 0; | |
1364 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
1365 | if (err) | |
1366 | return err; | |
1367 | ||
1368 | return 0; | |
1369 | } | |
1370 | ||
1371 | #if CONFIG_IS_ENABLED(MMC_WRITE) | |
1372 | static int sd_read_ssr(struct mmc *mmc) | |
1373 | { | |
1374 | static const unsigned int sd_au_size[] = { | |
1375 | 0, SZ_16K / 512, SZ_32K / 512, | |
1376 | SZ_64K / 512, SZ_128K / 512, SZ_256K / 512, | |
1377 | SZ_512K / 512, SZ_1M / 512, SZ_2M / 512, | |
1378 | SZ_4M / 512, SZ_8M / 512, (SZ_8M + SZ_4M) / 512, | |
1379 | SZ_16M / 512, (SZ_16M + SZ_8M) / 512, SZ_32M / 512, | |
1380 | SZ_64M / 512, | |
1381 | }; | |
1382 | int err, i; | |
1383 | struct mmc_cmd cmd; | |
1384 | ALLOC_CACHE_ALIGN_BUFFER(uint, ssr, 16); | |
1385 | struct mmc_data data; | |
1386 | int timeout = 3; | |
1387 | unsigned int au, eo, et, es; | |
1388 | ||
1389 | cmd.cmdidx = MMC_CMD_APP_CMD; | |
1390 | cmd.resp_type = MMC_RSP_R1; | |
1391 | cmd.cmdarg = mmc->rca << 16; | |
1392 | ||
1393 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
1394 | if (err) | |
1395 | return err; | |
1396 | ||
1397 | cmd.cmdidx = SD_CMD_APP_SD_STATUS; | |
1398 | cmd.resp_type = MMC_RSP_R1; | |
1399 | cmd.cmdarg = 0; | |
1400 | ||
1401 | retry_ssr: | |
1402 | data.dest = (char *)ssr; | |
1403 | data.blocksize = 64; | |
1404 | data.blocks = 1; | |
1405 | data.flags = MMC_DATA_READ; | |
1406 | ||
1407 | err = mmc_send_cmd(mmc, &cmd, &data); | |
1408 | if (err) { | |
1409 | if (timeout--) | |
1410 | goto retry_ssr; | |
1411 | ||
1412 | return err; | |
1413 | } | |
1414 | ||
1415 | for (i = 0; i < 16; i++) | |
1416 | ssr[i] = be32_to_cpu(ssr[i]); | |
1417 | ||
1418 | au = (ssr[2] >> 12) & 0xF; | |
1419 | if ((au <= 9) || (mmc->version == SD_VERSION_3)) { | |
1420 | mmc->ssr.au = sd_au_size[au]; | |
1421 | es = (ssr[3] >> 24) & 0xFF; | |
1422 | es |= (ssr[2] & 0xFF) << 8; | |
1423 | et = (ssr[3] >> 18) & 0x3F; | |
1424 | if (es && et) { | |
1425 | eo = (ssr[3] >> 16) & 0x3; | |
1426 | mmc->ssr.erase_timeout = (et * 1000) / es; | |
1427 | mmc->ssr.erase_offset = eo * 1000; | |
1428 | } | |
1429 | } else { | |
1430 | pr_debug("Invalid Allocation Unit Size.\n"); | |
1431 | } | |
1432 | ||
1433 | return 0; | |
1434 | } | |
1435 | #endif | |
1436 | /* frequency bases */ | |
1437 | /* divided by 10 to be nice to platforms without floating point */ | |
1438 | static const int fbase[] = { | |
1439 | 10000, | |
1440 | 100000, | |
1441 | 1000000, | |
1442 | 10000000, | |
1443 | }; | |
1444 | ||
1445 | /* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice | |
1446 | * to platforms without floating point. | |
1447 | */ | |
1448 | static const u8 multipliers[] = { | |
1449 | 0, /* reserved */ | |
1450 | 10, | |
1451 | 12, | |
1452 | 13, | |
1453 | 15, | |
1454 | 20, | |
1455 | 25, | |
1456 | 30, | |
1457 | 35, | |
1458 | 40, | |
1459 | 45, | |
1460 | 50, | |
1461 | 55, | |
1462 | 60, | |
1463 | 70, | |
1464 | 80, | |
1465 | }; | |
1466 | ||
1467 | static inline int bus_width(uint cap) | |
1468 | { | |
1469 | if (cap == MMC_MODE_8BIT) | |
1470 | return 8; | |
1471 | if (cap == MMC_MODE_4BIT) | |
1472 | return 4; | |
1473 | if (cap == MMC_MODE_1BIT) | |
1474 | return 1; | |
1475 | pr_warn("invalid bus witdh capability 0x%x\n", cap); | |
1476 | return 0; | |
1477 | } | |
1478 | ||
1479 | #if !CONFIG_IS_ENABLED(DM_MMC) | |
1480 | #ifdef MMC_SUPPORTS_TUNING | |
1481 | static int mmc_execute_tuning(struct mmc *mmc, uint opcode) | |
1482 | { | |
1483 | return -ENOTSUPP; | |
1484 | } | |
1485 | #endif | |
1486 | ||
1487 | static void mmc_send_init_stream(struct mmc *mmc) | |
1488 | { | |
1489 | } | |
1490 | ||
1491 | static int mmc_set_ios(struct mmc *mmc) | |
1492 | { | |
1493 | int ret = 0; | |
1494 | ||
1495 | if (mmc->cfg->ops->set_ios) | |
1496 | ret = mmc->cfg->ops->set_ios(mmc); | |
1497 | ||
1498 | return ret; | |
1499 | } | |
1500 | #endif | |
1501 | ||
1502 | int mmc_set_clock(struct mmc *mmc, uint clock, bool disable) | |
1503 | { | |
1504 | if (!disable) { | |
1505 | if (clock > mmc->cfg->f_max) | |
1506 | clock = mmc->cfg->f_max; | |
1507 | ||
1508 | if (clock < mmc->cfg->f_min) | |
1509 | clock = mmc->cfg->f_min; | |
1510 | } | |
1511 | ||
1512 | mmc->clock = clock; | |
1513 | mmc->clk_disable = disable; | |
1514 | ||
1515 | return mmc_set_ios(mmc); | |
1516 | } | |
1517 | ||
1518 | static int mmc_set_bus_width(struct mmc *mmc, uint width) | |
1519 | { | |
1520 | mmc->bus_width = width; | |
1521 | ||
1522 | return mmc_set_ios(mmc); | |
1523 | } | |
1524 | ||
1525 | #if CONFIG_IS_ENABLED(MMC_VERBOSE) || defined(DEBUG) | |
1526 | /* | |
1527 | * helper function to display the capabilities in a human | |
1528 | * friendly manner. The capabilities include bus width and | |
1529 | * supported modes. | |
1530 | */ | |
1531 | void mmc_dump_capabilities(const char *text, uint caps) | |
1532 | { | |
1533 | enum bus_mode mode; | |
1534 | ||
1535 | pr_debug("%s: widths [", text); | |
1536 | if (caps & MMC_MODE_8BIT) | |
1537 | pr_debug("8, "); | |
1538 | if (caps & MMC_MODE_4BIT) | |
1539 | pr_debug("4, "); | |
1540 | if (caps & MMC_MODE_1BIT) | |
1541 | pr_debug("1, "); | |
1542 | pr_debug("\b\b] modes ["); | |
1543 | for (mode = MMC_LEGACY; mode < MMC_MODES_END; mode++) | |
1544 | if (MMC_CAP(mode) & caps) | |
1545 | pr_debug("%s, ", mmc_mode_name(mode)); | |
1546 | pr_debug("\b\b]\n"); | |
1547 | } | |
1548 | #endif | |
1549 | ||
1550 | struct mode_width_tuning { | |
1551 | enum bus_mode mode; | |
1552 | uint widths; | |
1553 | #ifdef MMC_SUPPORTS_TUNING | |
1554 | uint tuning; | |
1555 | #endif | |
1556 | }; | |
1557 | ||
1558 | #if CONFIG_IS_ENABLED(MMC_IO_VOLTAGE) | |
1559 | int mmc_voltage_to_mv(enum mmc_voltage voltage) | |
1560 | { | |
1561 | switch (voltage) { | |
1562 | case MMC_SIGNAL_VOLTAGE_000: return 0; | |
1563 | case MMC_SIGNAL_VOLTAGE_330: return 3300; | |
1564 | case MMC_SIGNAL_VOLTAGE_180: return 1800; | |
1565 | case MMC_SIGNAL_VOLTAGE_120: return 1200; | |
1566 | } | |
1567 | return -EINVAL; | |
1568 | } | |
1569 | ||
1570 | static int mmc_set_signal_voltage(struct mmc *mmc, uint signal_voltage) | |
1571 | { | |
1572 | int err; | |
1573 | ||
1574 | if (mmc->signal_voltage == signal_voltage) | |
1575 | return 0; | |
1576 | ||
1577 | mmc->signal_voltage = signal_voltage; | |
1578 | err = mmc_set_ios(mmc); | |
1579 | if (err) | |
1580 | pr_debug("unable to set voltage (err %d)\n", err); | |
1581 | ||
1582 | return err; | |
1583 | } | |
1584 | #else | |
1585 | static inline int mmc_set_signal_voltage(struct mmc *mmc, uint signal_voltage) | |
1586 | { | |
1587 | return 0; | |
1588 | } | |
1589 | #endif | |
1590 | ||
1591 | static const struct mode_width_tuning sd_modes_by_pref[] = { | |
1592 | #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) | |
1593 | #ifdef MMC_SUPPORTS_TUNING | |
1594 | { | |
1595 | .mode = UHS_SDR104, | |
1596 | .widths = MMC_MODE_4BIT | MMC_MODE_1BIT, | |
1597 | .tuning = MMC_CMD_SEND_TUNING_BLOCK | |
1598 | }, | |
1599 | #endif | |
1600 | { | |
1601 | .mode = UHS_SDR50, | |
1602 | .widths = MMC_MODE_4BIT | MMC_MODE_1BIT, | |
1603 | }, | |
1604 | { | |
1605 | .mode = UHS_DDR50, | |
1606 | .widths = MMC_MODE_4BIT | MMC_MODE_1BIT, | |
1607 | }, | |
1608 | { | |
1609 | .mode = UHS_SDR25, | |
1610 | .widths = MMC_MODE_4BIT | MMC_MODE_1BIT, | |
1611 | }, | |
1612 | #endif | |
1613 | { | |
1614 | .mode = SD_HS, | |
1615 | .widths = MMC_MODE_4BIT | MMC_MODE_1BIT, | |
1616 | }, | |
1617 | #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) | |
1618 | { | |
1619 | .mode = UHS_SDR12, | |
1620 | .widths = MMC_MODE_4BIT | MMC_MODE_1BIT, | |
1621 | }, | |
1622 | #endif | |
1623 | { | |
1624 | .mode = SD_LEGACY, | |
1625 | .widths = MMC_MODE_4BIT | MMC_MODE_1BIT, | |
1626 | } | |
1627 | }; | |
1628 | ||
1629 | #define for_each_sd_mode_by_pref(caps, mwt) \ | |
1630 | for (mwt = sd_modes_by_pref;\ | |
1631 | mwt < sd_modes_by_pref + ARRAY_SIZE(sd_modes_by_pref);\ | |
1632 | mwt++) \ | |
1633 | if (caps & MMC_CAP(mwt->mode)) | |
1634 | ||
1635 | static int sd_select_mode_and_width(struct mmc *mmc, uint card_caps) | |
1636 | { | |
1637 | int err; | |
1638 | uint widths[] = {MMC_MODE_4BIT, MMC_MODE_1BIT}; | |
1639 | const struct mode_width_tuning *mwt; | |
1640 | #if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT) | |
1641 | bool uhs_en = (mmc->ocr & OCR_S18R) ? true : false; | |
1642 | #else | |
1643 | bool uhs_en = false; | |
1644 | #endif | |
1645 | uint caps; | |
1646 | ||
1647 | #ifdef DEBUG | |
1648 | mmc_dump_capabilities("sd card", card_caps); | |
1649 | mmc_dump_capabilities("host", mmc->host_caps); | |
1650 | #endif | |
1651 | ||
1652 | /* Restrict card's capabilities by what the host can do */ | |
1653 | caps = card_caps & mmc->host_caps; | |
1654 | ||
1655 | if (!uhs_en) | |
1656 | caps &= ~UHS_CAPS; | |
1657 | ||
1658 | for_each_sd_mode_by_pref(caps, mwt) { | |
1659 | uint *w; | |
1660 | ||
1661 | for (w = widths; w < widths + ARRAY_SIZE(widths); w++) { | |
1662 | if (*w & caps & mwt->widths) { | |
1663 | pr_debug("trying mode %s width %d (at %d MHz)\n", | |
1664 | mmc_mode_name(mwt->mode), | |
1665 | bus_width(*w), | |
1666 | mmc_mode2freq(mmc, mwt->mode) / 1000000); | |
1667 | ||
1668 | /* configure the bus width (card + host) */ | |
1669 | err = sd_select_bus_width(mmc, bus_width(*w)); | |
1670 | if (err) | |
1671 | goto error; | |
1672 | mmc_set_bus_width(mmc, bus_width(*w)); | |
1673 | ||
1674 | /* configure the bus mode (card) */ | |
1675 | err = sd_set_card_speed(mmc, mwt->mode); | |
1676 | if (err) | |
1677 | goto error; | |
1678 | ||
1679 | /* configure the bus mode (host) */ | |
1680 | mmc_select_mode(mmc, mwt->mode); | |
1681 | mmc_set_clock(mmc, mmc->tran_speed, false); | |
1682 | ||
1683 | #ifdef MMC_SUPPORTS_TUNING | |
1684 | /* execute tuning if needed */ | |
1685 | if (mwt->tuning && !mmc_host_is_spi(mmc)) { | |
1686 | err = mmc_execute_tuning(mmc, | |
1687 | mwt->tuning); | |
1688 | if (err) { | |
1689 | pr_debug("tuning failed\n"); | |
1690 | goto error; | |
1691 | } | |
1692 | } | |
1693 | #endif | |
1694 | ||
1695 | #if CONFIG_IS_ENABLED(MMC_WRITE) | |
1696 | err = sd_read_ssr(mmc); | |
1697 | if (!err) | |
1698 | pr_warn("unable to read ssr\n"); | |
1699 | #endif | |
1700 | if (!err) | |
1701 | return 0; | |
1702 | ||
1703 | error: | |
1704 | /* revert to a safer bus speed */ | |
1705 | mmc_select_mode(mmc, SD_LEGACY); | |
1706 | mmc_set_clock(mmc, mmc->tran_speed, false); | |
1707 | } | |
1708 | } | |
1709 | } | |
1710 | ||
1711 | pr_err("unable to select a mode\n"); | |
1712 | return -ENOTSUPP; | |
1713 | } | |
1714 | ||
1715 | /* | |
1716 | * read the compare the part of ext csd that is constant. | |
1717 | * This can be used to check that the transfer is working | |
1718 | * as expected. | |
1719 | */ | |
1720 | static int mmc_read_and_compare_ext_csd(struct mmc *mmc) | |
1721 | { | |
1722 | int err; | |
1723 | const u8 *ext_csd = mmc->ext_csd; | |
1724 | ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN); | |
1725 | ||
1726 | if (mmc->version < MMC_VERSION_4) | |
1727 | return 0; | |
1728 | ||
1729 | err = mmc_send_ext_csd(mmc, test_csd); | |
1730 | if (err) | |
1731 | return err; | |
1732 | ||
1733 | /* Only compare read only fields */ | |
1734 | if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] | |
1735 | == test_csd[EXT_CSD_PARTITIONING_SUPPORT] && | |
1736 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE] | |
1737 | == test_csd[EXT_CSD_HC_WP_GRP_SIZE] && | |
1738 | ext_csd[EXT_CSD_REV] | |
1739 | == test_csd[EXT_CSD_REV] && | |
1740 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] | |
1741 | == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE] && | |
1742 | memcmp(&ext_csd[EXT_CSD_SEC_CNT], | |
1743 | &test_csd[EXT_CSD_SEC_CNT], 4) == 0) | |
1744 | return 0; | |
1745 | ||
1746 | return -EBADMSG; | |
1747 | } | |
1748 | ||
1749 | #if CONFIG_IS_ENABLED(MMC_IO_VOLTAGE) | |
1750 | static int mmc_set_lowest_voltage(struct mmc *mmc, enum bus_mode mode, | |
1751 | uint32_t allowed_mask) | |
1752 | { | |
1753 | u32 card_mask = 0; | |
1754 | ||
1755 | switch (mode) { | |
1756 | case MMC_HS_200: | |
1757 | if (mmc->cardtype & EXT_CSD_CARD_TYPE_HS200_1_8V) | |
1758 | card_mask |= MMC_SIGNAL_VOLTAGE_180; | |
1759 | if (mmc->cardtype & EXT_CSD_CARD_TYPE_HS200_1_2V) | |
1760 | card_mask |= MMC_SIGNAL_VOLTAGE_120; | |
1761 | break; | |
1762 | case MMC_DDR_52: | |
1763 | if (mmc->cardtype & EXT_CSD_CARD_TYPE_DDR_1_8V) | |
1764 | card_mask |= MMC_SIGNAL_VOLTAGE_330 | | |
1765 | MMC_SIGNAL_VOLTAGE_180; | |
1766 | if (mmc->cardtype & EXT_CSD_CARD_TYPE_DDR_1_2V) | |
1767 | card_mask |= MMC_SIGNAL_VOLTAGE_120; | |
1768 | break; | |
1769 | default: | |
1770 | card_mask |= MMC_SIGNAL_VOLTAGE_330; | |
1771 | break; | |
1772 | } | |
1773 | ||
1774 | while (card_mask & allowed_mask) { | |
1775 | enum mmc_voltage best_match; | |
1776 | ||
1777 | best_match = 1 << (ffs(card_mask & allowed_mask) - 1); | |
1778 | if (!mmc_set_signal_voltage(mmc, best_match)) | |
1779 | return 0; | |
1780 | ||
1781 | allowed_mask &= ~best_match; | |
1782 | } | |
1783 | ||
1784 | return -ENOTSUPP; | |
1785 | } | |
1786 | #else | |
1787 | static inline int mmc_set_lowest_voltage(struct mmc *mmc, enum bus_mode mode, | |
1788 | uint32_t allowed_mask) | |
1789 | { | |
1790 | return 0; | |
1791 | } | |
1792 | #endif | |
1793 | ||
1794 | static const struct mode_width_tuning mmc_modes_by_pref[] = { | |
1795 | #if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) | |
1796 | { | |
1797 | .mode = MMC_HS_200, | |
1798 | .widths = MMC_MODE_8BIT | MMC_MODE_4BIT, | |
1799 | .tuning = MMC_CMD_SEND_TUNING_BLOCK_HS200 | |
1800 | }, | |
1801 | #endif | |
1802 | { | |
1803 | .mode = MMC_DDR_52, | |
1804 | .widths = MMC_MODE_8BIT | MMC_MODE_4BIT, | |
1805 | }, | |
1806 | { | |
1807 | .mode = MMC_HS_52, | |
1808 | .widths = MMC_MODE_8BIT | MMC_MODE_4BIT | MMC_MODE_1BIT, | |
1809 | }, | |
1810 | { | |
1811 | .mode = MMC_HS, | |
1812 | .widths = MMC_MODE_8BIT | MMC_MODE_4BIT | MMC_MODE_1BIT, | |
1813 | }, | |
1814 | { | |
1815 | .mode = MMC_LEGACY, | |
1816 | .widths = MMC_MODE_8BIT | MMC_MODE_4BIT | MMC_MODE_1BIT, | |
1817 | } | |
1818 | }; | |
1819 | ||
1820 | #define for_each_mmc_mode_by_pref(caps, mwt) \ | |
1821 | for (mwt = mmc_modes_by_pref;\ | |
1822 | mwt < mmc_modes_by_pref + ARRAY_SIZE(mmc_modes_by_pref);\ | |
1823 | mwt++) \ | |
1824 | if (caps & MMC_CAP(mwt->mode)) | |
1825 | ||
1826 | static const struct ext_csd_bus_width { | |
1827 | uint cap; | |
1828 | bool is_ddr; | |
1829 | uint ext_csd_bits; | |
1830 | } ext_csd_bus_width[] = { | |
1831 | {MMC_MODE_8BIT, true, EXT_CSD_DDR_BUS_WIDTH_8}, | |
1832 | {MMC_MODE_4BIT, true, EXT_CSD_DDR_BUS_WIDTH_4}, | |
1833 | {MMC_MODE_8BIT, false, EXT_CSD_BUS_WIDTH_8}, | |
1834 | {MMC_MODE_4BIT, false, EXT_CSD_BUS_WIDTH_4}, | |
1835 | {MMC_MODE_1BIT, false, EXT_CSD_BUS_WIDTH_1}, | |
1836 | }; | |
1837 | ||
1838 | #define for_each_supported_width(caps, ddr, ecbv) \ | |
1839 | for (ecbv = ext_csd_bus_width;\ | |
1840 | ecbv < ext_csd_bus_width + ARRAY_SIZE(ext_csd_bus_width);\ | |
1841 | ecbv++) \ | |
1842 | if ((ddr == ecbv->is_ddr) && (caps & ecbv->cap)) | |
1843 | ||
1844 | static int mmc_select_mode_and_width(struct mmc *mmc, uint card_caps) | |
1845 | { | |
1846 | int err; | |
1847 | const struct mode_width_tuning *mwt; | |
1848 | const struct ext_csd_bus_width *ecbw; | |
1849 | ||
1850 | #ifdef DEBUG | |
1851 | mmc_dump_capabilities("mmc", card_caps); | |
1852 | mmc_dump_capabilities("host", mmc->host_caps); | |
1853 | #endif | |
1854 | ||
1855 | /* Restrict card's capabilities by what the host can do */ | |
1856 | card_caps &= mmc->host_caps; | |
1857 | ||
1858 | /* Only version 4 of MMC supports wider bus widths */ | |
1859 | if (mmc->version < MMC_VERSION_4) | |
1860 | return 0; | |
1861 | ||
1862 | if (!mmc->ext_csd) { | |
1863 | pr_debug("No ext_csd found!\n"); /* this should enver happen */ | |
1864 | return -ENOTSUPP; | |
1865 | } | |
1866 | ||
1867 | mmc_set_clock(mmc, mmc->legacy_speed, false); | |
1868 | ||
1869 | for_each_mmc_mode_by_pref(card_caps, mwt) { | |
1870 | for_each_supported_width(card_caps & mwt->widths, | |
1871 | mmc_is_mode_ddr(mwt->mode), ecbw) { | |
1872 | enum mmc_voltage old_voltage; | |
1873 | pr_debug("trying mode %s width %d (at %d MHz)\n", | |
1874 | mmc_mode_name(mwt->mode), | |
1875 | bus_width(ecbw->cap), | |
1876 | mmc_mode2freq(mmc, mwt->mode) / 1000000); | |
1877 | old_voltage = mmc->signal_voltage; | |
1878 | err = mmc_set_lowest_voltage(mmc, mwt->mode, | |
1879 | MMC_ALL_SIGNAL_VOLTAGE); | |
1880 | if (err) | |
1881 | continue; | |
1882 | ||
1883 | /* configure the bus width (card + host) */ | |
1884 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
1885 | EXT_CSD_BUS_WIDTH, | |
1886 | ecbw->ext_csd_bits & ~EXT_CSD_DDR_FLAG); | |
1887 | if (err) | |
1888 | goto error; | |
1889 | mmc_set_bus_width(mmc, bus_width(ecbw->cap)); | |
1890 | ||
1891 | /* configure the bus speed (card) */ | |
1892 | err = mmc_set_card_speed(mmc, mwt->mode); | |
1893 | if (err) | |
1894 | goto error; | |
1895 | ||
1896 | /* | |
1897 | * configure the bus width AND the ddr mode (card) | |
1898 | * The host side will be taken care of in the next step | |
1899 | */ | |
1900 | if (ecbw->ext_csd_bits & EXT_CSD_DDR_FLAG) { | |
1901 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
1902 | EXT_CSD_BUS_WIDTH, | |
1903 | ecbw->ext_csd_bits); | |
1904 | if (err) | |
1905 | goto error; | |
1906 | } | |
1907 | ||
1908 | /* configure the bus mode (host) */ | |
1909 | mmc_select_mode(mmc, mwt->mode); | |
1910 | mmc_set_clock(mmc, mmc->tran_speed, false); | |
1911 | #ifdef MMC_SUPPORTS_TUNING | |
1912 | ||
1913 | /* execute tuning if needed */ | |
1914 | if (mwt->tuning) { | |
1915 | err = mmc_execute_tuning(mmc, mwt->tuning); | |
1916 | if (err) { | |
1917 | pr_debug("tuning failed\n"); | |
1918 | goto error; | |
1919 | } | |
1920 | } | |
1921 | #endif | |
1922 | ||
1923 | /* do a transfer to check the configuration */ | |
1924 | err = mmc_read_and_compare_ext_csd(mmc); | |
1925 | if (!err) | |
1926 | return 0; | |
1927 | error: | |
1928 | mmc_set_signal_voltage(mmc, old_voltage); | |
1929 | /* if an error occured, revert to a safer bus mode */ | |
1930 | mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
1931 | EXT_CSD_BUS_WIDTH, EXT_CSD_BUS_WIDTH_1); | |
1932 | mmc_select_mode(mmc, MMC_LEGACY); | |
1933 | mmc_set_bus_width(mmc, 1); | |
1934 | } | |
1935 | } | |
1936 | ||
1937 | pr_err("unable to select a mode\n"); | |
1938 | ||
1939 | return -ENOTSUPP; | |
1940 | } | |
1941 | ||
1942 | static int mmc_startup_v4(struct mmc *mmc) | |
1943 | { | |
1944 | int err, i; | |
1945 | u64 capacity; | |
1946 | bool has_parts = false; | |
1947 | bool part_completed; | |
1948 | static const u32 mmc_versions[] = { | |
1949 | MMC_VERSION_4, | |
1950 | MMC_VERSION_4_1, | |
1951 | MMC_VERSION_4_2, | |
1952 | MMC_VERSION_4_3, | |
1953 | MMC_VERSION_4_4, | |
1954 | MMC_VERSION_4_41, | |
1955 | MMC_VERSION_4_5, | |
1956 | MMC_VERSION_5_0, | |
1957 | MMC_VERSION_5_1 | |
1958 | }; | |
1959 | ||
1960 | ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN); | |
1961 | ||
1962 | if (IS_SD(mmc) || (mmc->version < MMC_VERSION_4)) | |
1963 | return 0; | |
1964 | ||
1965 | /* check ext_csd version and capacity */ | |
1966 | err = mmc_send_ext_csd(mmc, ext_csd); | |
1967 | if (err) | |
1968 | goto error; | |
1969 | ||
1970 | /* store the ext csd for future reference */ | |
1971 | if (!mmc->ext_csd) | |
1972 | mmc->ext_csd = malloc(MMC_MAX_BLOCK_LEN); | |
1973 | if (!mmc->ext_csd) | |
1974 | return -ENOMEM; | |
1975 | memcpy(mmc->ext_csd, ext_csd, MMC_MAX_BLOCK_LEN); | |
1976 | ||
1977 | if (ext_csd[EXT_CSD_REV] > ARRAY_SIZE(mmc_versions)) | |
1978 | return -EINVAL; | |
1979 | ||
1980 | mmc->version = mmc_versions[ext_csd[EXT_CSD_REV]]; | |
1981 | ||
1982 | if (mmc->version >= MMC_VERSION_4_2) { | |
1983 | /* | |
1984 | * According to the JEDEC Standard, the value of | |
1985 | * ext_csd's capacity is valid if the value is more | |
1986 | * than 2GB | |
1987 | */ | |
1988 | capacity = ext_csd[EXT_CSD_SEC_CNT] << 0 | |
1989 | | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | |
1990 | | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | |
1991 | | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; | |
1992 | capacity *= MMC_MAX_BLOCK_LEN; | |
1993 | if ((capacity >> 20) > 2 * 1024) | |
1994 | mmc->capacity_user = capacity; | |
1995 | } | |
1996 | ||
1997 | /* The partition data may be non-zero but it is only | |
1998 | * effective if PARTITION_SETTING_COMPLETED is set in | |
1999 | * EXT_CSD, so ignore any data if this bit is not set, | |
2000 | * except for enabling the high-capacity group size | |
2001 | * definition (see below). | |
2002 | */ | |
2003 | part_completed = !!(ext_csd[EXT_CSD_PARTITION_SETTING] & | |
2004 | EXT_CSD_PARTITION_SETTING_COMPLETED); | |
2005 | ||
2006 | /* store the partition info of emmc */ | |
2007 | mmc->part_support = ext_csd[EXT_CSD_PARTITIONING_SUPPORT]; | |
2008 | if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) || | |
2009 | ext_csd[EXT_CSD_BOOT_MULT]) | |
2010 | mmc->part_config = ext_csd[EXT_CSD_PART_CONF]; | |
2011 | if (part_completed && | |
2012 | (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & ENHNCD_SUPPORT)) | |
2013 | mmc->part_attr = ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE]; | |
2014 | ||
2015 | mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17; | |
2016 | ||
2017 | mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17; | |
2018 | ||
2019 | for (i = 0; i < 4; i++) { | |
2020 | int idx = EXT_CSD_GP_SIZE_MULT + i * 3; | |
2021 | uint mult = (ext_csd[idx + 2] << 16) + | |
2022 | (ext_csd[idx + 1] << 8) + ext_csd[idx]; | |
2023 | if (mult) | |
2024 | has_parts = true; | |
2025 | if (!part_completed) | |
2026 | continue; | |
2027 | mmc->capacity_gp[i] = mult; | |
2028 | mmc->capacity_gp[i] *= | |
2029 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
2030 | mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
2031 | mmc->capacity_gp[i] <<= 19; | |
2032 | } | |
2033 | ||
2034 | #ifndef CONFIG_SPL_BUILD | |
2035 | if (part_completed) { | |
2036 | mmc->enh_user_size = | |
2037 | (ext_csd[EXT_CSD_ENH_SIZE_MULT + 2] << 16) + | |
2038 | (ext_csd[EXT_CSD_ENH_SIZE_MULT + 1] << 8) + | |
2039 | ext_csd[EXT_CSD_ENH_SIZE_MULT]; | |
2040 | mmc->enh_user_size *= ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; | |
2041 | mmc->enh_user_size *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
2042 | mmc->enh_user_size <<= 19; | |
2043 | mmc->enh_user_start = | |
2044 | (ext_csd[EXT_CSD_ENH_START_ADDR + 3] << 24) + | |
2045 | (ext_csd[EXT_CSD_ENH_START_ADDR + 2] << 16) + | |
2046 | (ext_csd[EXT_CSD_ENH_START_ADDR + 1] << 8) + | |
2047 | ext_csd[EXT_CSD_ENH_START_ADDR]; | |
2048 | if (mmc->high_capacity) | |
2049 | mmc->enh_user_start <<= 9; | |
2050 | } | |
2051 | #endif | |
2052 | ||
2053 | /* | |
2054 | * Host needs to enable ERASE_GRP_DEF bit if device is | |
2055 | * partitioned. This bit will be lost every time after a reset | |
2056 | * or power off. This will affect erase size. | |
2057 | */ | |
2058 | if (part_completed) | |
2059 | has_parts = true; | |
2060 | if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) && | |
2061 | (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB)) | |
2062 | has_parts = true; | |
2063 | if (has_parts) { | |
2064 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, | |
2065 | EXT_CSD_ERASE_GROUP_DEF, 1); | |
2066 | ||
2067 | if (err) | |
2068 | goto error; | |
2069 | ||
2070 | ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1; | |
2071 | } | |
2072 | ||
2073 | if (ext_csd[EXT_CSD_ERASE_GROUP_DEF] & 0x01) { | |
2074 | #if CONFIG_IS_ENABLED(MMC_WRITE) | |
2075 | /* Read out group size from ext_csd */ | |
2076 | mmc->erase_grp_size = | |
2077 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 1024; | |
2078 | #endif | |
2079 | /* | |
2080 | * if high capacity and partition setting completed | |
2081 | * SEC_COUNT is valid even if it is smaller than 2 GiB | |
2082 | * JEDEC Standard JESD84-B45, 6.2.4 | |
2083 | */ | |
2084 | if (mmc->high_capacity && part_completed) { | |
2085 | capacity = (ext_csd[EXT_CSD_SEC_CNT]) | | |
2086 | (ext_csd[EXT_CSD_SEC_CNT + 1] << 8) | | |
2087 | (ext_csd[EXT_CSD_SEC_CNT + 2] << 16) | | |
2088 | (ext_csd[EXT_CSD_SEC_CNT + 3] << 24); | |
2089 | capacity *= MMC_MAX_BLOCK_LEN; | |
2090 | mmc->capacity_user = capacity; | |
2091 | } | |
2092 | } | |
2093 | #if CONFIG_IS_ENABLED(MMC_WRITE) | |
2094 | else { | |
2095 | /* Calculate the group size from the csd value. */ | |
2096 | int erase_gsz, erase_gmul; | |
2097 | ||
2098 | erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10; | |
2099 | erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5; | |
2100 | mmc->erase_grp_size = (erase_gsz + 1) | |
2101 | * (erase_gmul + 1); | |
2102 | } | |
2103 | #endif | |
2104 | #if CONFIG_IS_ENABLED(MMC_HW_PARTITIONING) | |
2105 | mmc->hc_wp_grp_size = 1024 | |
2106 | * ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] | |
2107 | * ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; | |
2108 | #endif | |
2109 | ||
2110 | mmc->wr_rel_set = ext_csd[EXT_CSD_WR_REL_SET]; | |
2111 | ||
2112 | return 0; | |
2113 | error: | |
2114 | if (mmc->ext_csd) { | |
2115 | free(mmc->ext_csd); | |
2116 | mmc->ext_csd = NULL; | |
2117 | } | |
2118 | return err; | |
2119 | } | |
2120 | ||
2121 | static int mmc_startup(struct mmc *mmc) | |
2122 | { | |
2123 | int err, i; | |
2124 | uint mult, freq; | |
2125 | u64 cmult, csize; | |
2126 | struct mmc_cmd cmd; | |
2127 | struct blk_desc *bdesc; | |
2128 | ||
2129 | #ifdef CONFIG_MMC_SPI_CRC_ON | |
2130 | if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */ | |
2131 | cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF; | |
2132 | cmd.resp_type = MMC_RSP_R1; | |
2133 | cmd.cmdarg = 1; | |
2134 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
2135 | if (err) | |
2136 | return err; | |
2137 | } | |
2138 | #endif | |
2139 | ||
2140 | /* Put the Card in Identify Mode */ | |
2141 | cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID : | |
2142 | MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */ | |
2143 | cmd.resp_type = MMC_RSP_R2; | |
2144 | cmd.cmdarg = 0; | |
2145 | ||
2146 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
2147 | ||
2148 | #ifdef CONFIG_MMC_QUIRKS | |
2149 | if (err && (mmc->quirks & MMC_QUIRK_RETRY_SEND_CID)) { | |
2150 | int retries = 4; | |
2151 | /* | |
2152 | * It has been seen that SEND_CID may fail on the first | |
2153 | * attempt, let's try a few more time | |
2154 | */ | |
2155 | do { | |
2156 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
2157 | if (!err) | |
2158 | break; | |
2159 | } while (retries--); | |
2160 | } | |
2161 | #endif | |
2162 | ||
2163 | if (err) | |
2164 | return err; | |
2165 | ||
2166 | memcpy(mmc->cid, cmd.response, 16); | |
2167 | ||
2168 | /* | |
2169 | * For MMC cards, set the Relative Address. | |
2170 | * For SD cards, get the Relatvie Address. | |
2171 | * This also puts the cards into Standby State | |
2172 | */ | |
2173 | if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */ | |
2174 | cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR; | |
2175 | cmd.cmdarg = mmc->rca << 16; | |
2176 | cmd.resp_type = MMC_RSP_R6; | |
2177 | ||
2178 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
2179 | ||
2180 | if (err) | |
2181 | return err; | |
2182 | ||
2183 | if (IS_SD(mmc)) | |
2184 | mmc->rca = (cmd.response[0] >> 16) & 0xffff; | |
2185 | } | |
2186 | ||
2187 | /* Get the Card-Specific Data */ | |
2188 | cmd.cmdidx = MMC_CMD_SEND_CSD; | |
2189 | cmd.resp_type = MMC_RSP_R2; | |
2190 | cmd.cmdarg = mmc->rca << 16; | |
2191 | ||
2192 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
2193 | ||
2194 | if (err) | |
2195 | return err; | |
2196 | ||
2197 | mmc->csd[0] = cmd.response[0]; | |
2198 | mmc->csd[1] = cmd.response[1]; | |
2199 | mmc->csd[2] = cmd.response[2]; | |
2200 | mmc->csd[3] = cmd.response[3]; | |
2201 | ||
2202 | if (mmc->version == MMC_VERSION_UNKNOWN) { | |
2203 | int version = (cmd.response[0] >> 26) & 0xf; | |
2204 | ||
2205 | switch (version) { | |
2206 | case 0: | |
2207 | mmc->version = MMC_VERSION_1_2; | |
2208 | break; | |
2209 | case 1: | |
2210 | mmc->version = MMC_VERSION_1_4; | |
2211 | break; | |
2212 | case 2: | |
2213 | mmc->version = MMC_VERSION_2_2; | |
2214 | break; | |
2215 | case 3: | |
2216 | mmc->version = MMC_VERSION_3; | |
2217 | break; | |
2218 | case 4: | |
2219 | mmc->version = MMC_VERSION_4; | |
2220 | break; | |
2221 | default: | |
2222 | mmc->version = MMC_VERSION_1_2; | |
2223 | break; | |
2224 | } | |
2225 | } | |
2226 | ||
2227 | /* divide frequency by 10, since the mults are 10x bigger */ | |
2228 | freq = fbase[(cmd.response[0] & 0x7)]; | |
2229 | mult = multipliers[((cmd.response[0] >> 3) & 0xf)]; | |
2230 | ||
2231 | mmc->legacy_speed = freq * mult; | |
2232 | mmc_select_mode(mmc, MMC_LEGACY); | |
2233 | ||
2234 | mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1); | |
2235 | mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf); | |
2236 | #if CONFIG_IS_ENABLED(MMC_WRITE) | |
2237 | ||
2238 | if (IS_SD(mmc)) | |
2239 | mmc->write_bl_len = mmc->read_bl_len; | |
2240 | else | |
2241 | mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf); | |
2242 | #endif | |
2243 | ||
2244 | if (mmc->high_capacity) { | |
2245 | csize = (mmc->csd[1] & 0x3f) << 16 | |
2246 | | (mmc->csd[2] & 0xffff0000) >> 16; | |
2247 | cmult = 8; | |
2248 | } else { | |
2249 | csize = (mmc->csd[1] & 0x3ff) << 2 | |
2250 | | (mmc->csd[2] & 0xc0000000) >> 30; | |
2251 | cmult = (mmc->csd[2] & 0x00038000) >> 15; | |
2252 | } | |
2253 | ||
2254 | mmc->capacity_user = (csize + 1) << (cmult + 2); | |
2255 | mmc->capacity_user *= mmc->read_bl_len; | |
2256 | mmc->capacity_boot = 0; | |
2257 | mmc->capacity_rpmb = 0; | |
2258 | for (i = 0; i < 4; i++) | |
2259 | mmc->capacity_gp[i] = 0; | |
2260 | ||
2261 | if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN) | |
2262 | mmc->read_bl_len = MMC_MAX_BLOCK_LEN; | |
2263 | ||
2264 | #if CONFIG_IS_ENABLED(MMC_WRITE) | |
2265 | if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN) | |
2266 | mmc->write_bl_len = MMC_MAX_BLOCK_LEN; | |
2267 | #endif | |
2268 | ||
2269 | if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) { | |
2270 | cmd.cmdidx = MMC_CMD_SET_DSR; | |
2271 | cmd.cmdarg = (mmc->dsr & 0xffff) << 16; | |
2272 | cmd.resp_type = MMC_RSP_NONE; | |
2273 | if (mmc_send_cmd(mmc, &cmd, NULL)) | |
2274 | pr_warn("MMC: SET_DSR failed\n"); | |
2275 | } | |
2276 | ||
2277 | /* Select the card, and put it into Transfer Mode */ | |
2278 | if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */ | |
2279 | cmd.cmdidx = MMC_CMD_SELECT_CARD; | |
2280 | cmd.resp_type = MMC_RSP_R1; | |
2281 | cmd.cmdarg = mmc->rca << 16; | |
2282 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
2283 | ||
2284 | if (err) | |
2285 | return err; | |
2286 | } | |
2287 | ||
2288 | /* | |
2289 | * For SD, its erase group is always one sector | |
2290 | */ | |
2291 | #if CONFIG_IS_ENABLED(MMC_WRITE) | |
2292 | mmc->erase_grp_size = 1; | |
2293 | #endif | |
2294 | mmc->part_config = MMCPART_NOAVAILABLE; | |
2295 | ||
2296 | err = mmc_startup_v4(mmc); | |
2297 | if (err) | |
2298 | return err; | |
2299 | ||
2300 | err = mmc_set_capacity(mmc, mmc_get_blk_desc(mmc)->hwpart); | |
2301 | if (err) | |
2302 | return err; | |
2303 | ||
2304 | if (IS_SD(mmc)) { | |
2305 | err = sd_get_capabilities(mmc); | |
2306 | if (err) | |
2307 | return err; | |
2308 | err = sd_select_mode_and_width(mmc, mmc->card_caps); | |
2309 | } else { | |
2310 | err = mmc_get_capabilities(mmc); | |
2311 | if (err) | |
2312 | return err; | |
2313 | mmc_select_mode_and_width(mmc, mmc->card_caps); | |
2314 | } | |
2315 | ||
2316 | if (err) | |
2317 | return err; | |
2318 | ||
2319 | mmc->best_mode = mmc->selected_mode; | |
2320 | ||
2321 | /* Fix the block length for DDR mode */ | |
2322 | if (mmc->ddr_mode) { | |
2323 | mmc->read_bl_len = MMC_MAX_BLOCK_LEN; | |
2324 | #if CONFIG_IS_ENABLED(MMC_WRITE) | |
2325 | mmc->write_bl_len = MMC_MAX_BLOCK_LEN; | |
2326 | #endif | |
2327 | } | |
2328 | ||
2329 | /* fill in device description */ | |
2330 | bdesc = mmc_get_blk_desc(mmc); | |
2331 | bdesc->lun = 0; | |
2332 | bdesc->hwpart = 0; | |
2333 | bdesc->type = 0; | |
2334 | bdesc->blksz = mmc->read_bl_len; | |
2335 | bdesc->log2blksz = LOG2(bdesc->blksz); | |
2336 | bdesc->lba = lldiv(mmc->capacity, mmc->read_bl_len); | |
2337 | #if !defined(CONFIG_SPL_BUILD) || \ | |
2338 | (defined(CONFIG_SPL_LIBCOMMON_SUPPORT) && \ | |
2339 | !defined(CONFIG_USE_TINY_PRINTF)) | |
2340 | sprintf(bdesc->vendor, "Man %06x Snr %04x%04x", | |
2341 | mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff), | |
2342 | (mmc->cid[3] >> 16) & 0xffff); | |
2343 | sprintf(bdesc->product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff, | |
2344 | (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff, | |
2345 | (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff, | |
2346 | (mmc->cid[2] >> 24) & 0xff); | |
2347 | sprintf(bdesc->revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf, | |
2348 | (mmc->cid[2] >> 16) & 0xf); | |
2349 | #else | |
2350 | bdesc->vendor[0] = 0; | |
2351 | bdesc->product[0] = 0; | |
2352 | bdesc->revision[0] = 0; | |
2353 | #endif | |
2354 | #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT) | |
2355 | part_init(bdesc); | |
2356 | #endif | |
2357 | ||
2358 | return 0; | |
2359 | } | |
2360 | ||
2361 | static int mmc_send_if_cond(struct mmc *mmc) | |
2362 | { | |
2363 | struct mmc_cmd cmd; | |
2364 | int err; | |
2365 | ||
2366 | cmd.cmdidx = SD_CMD_SEND_IF_COND; | |
2367 | /* We set the bit if the host supports voltages between 2.7 and 3.6 V */ | |
2368 | cmd.cmdarg = ((mmc->cfg->voltages & 0xff8000) != 0) << 8 | 0xaa; | |
2369 | cmd.resp_type = MMC_RSP_R7; | |
2370 | ||
2371 | err = mmc_send_cmd(mmc, &cmd, NULL); | |
2372 | ||
2373 | if (err) | |
2374 | return err; | |
2375 | ||
2376 | if ((cmd.response[0] & 0xff) != 0xaa) | |
2377 | return -EOPNOTSUPP; | |
2378 | else | |
2379 | mmc->version = SD_VERSION_2; | |
2380 | ||
2381 | return 0; | |
2382 | } | |
2383 | ||
2384 | #if !CONFIG_IS_ENABLED(DM_MMC) | |
2385 | /* board-specific MMC power initializations. */ | |
2386 | __weak void board_mmc_power_init(void) | |
2387 | { | |
2388 | } | |
2389 | #endif | |
2390 | ||
2391 | static int mmc_power_init(struct mmc *mmc) | |
2392 | { | |
2393 | #if CONFIG_IS_ENABLED(DM_MMC) | |
2394 | #if CONFIG_IS_ENABLED(DM_REGULATOR) | |
2395 | int ret; | |
2396 | ||
2397 | ret = device_get_supply_regulator(mmc->dev, "vmmc-supply", | |
2398 | &mmc->vmmc_supply); | |
2399 | if (ret) | |
2400 | pr_debug("%s: No vmmc supply\n", mmc->dev->name); | |
2401 | ||
2402 | ret = device_get_supply_regulator(mmc->dev, "vqmmc-supply", | |
2403 | &mmc->vqmmc_supply); | |
2404 | if (ret) | |
2405 | pr_debug("%s: No vqmmc supply\n", mmc->dev->name); | |
2406 | #endif | |
2407 | #else /* !CONFIG_DM_MMC */ | |
2408 | /* | |
2409 | * Driver model should use a regulator, as above, rather than calling | |
2410 | * out to board code. | |
2411 | */ | |
2412 | board_mmc_power_init(); | |
2413 | #endif | |
2414 | return 0; | |
2415 | } | |
2416 | ||
2417 | /* | |
2418 | * put the host in the initial state: | |
2419 | * - turn on Vdd (card power supply) | |
2420 | * - configure the bus width and clock to minimal values | |
2421 | */ | |
2422 | static void mmc_set_initial_state(struct mmc *mmc) | |
2423 | { | |
2424 | int err; | |
2425 | ||
2426 | /* First try to set 3.3V. If it fails set to 1.8V */ | |
2427 | err = mmc_set_signal_voltage(mmc, MMC_SIGNAL_VOLTAGE_330); | |
2428 | if (err != 0) | |
2429 | err = mmc_set_signal_voltage(mmc, MMC_SIGNAL_VOLTAGE_180); | |
2430 | if (err != 0) | |
2431 | pr_warn("mmc: failed to set signal voltage\n"); | |
2432 | ||
2433 | mmc_select_mode(mmc, MMC_LEGACY); | |
2434 | mmc_set_bus_width(mmc, 1); | |
2435 | mmc_set_clock(mmc, 0, false); | |
2436 | } | |
2437 | ||
2438 | static int mmc_power_on(struct mmc *mmc) | |
2439 | { | |
2440 | #if CONFIG_IS_ENABLED(DM_MMC) && CONFIG_IS_ENABLED(DM_REGULATOR) | |
2441 | if (mmc->vmmc_supply) { | |
2442 | int ret = regulator_set_enable(mmc->vmmc_supply, true); | |
2443 | ||
2444 | if (ret) { | |
2445 | puts("Error enabling VMMC supply\n"); | |
2446 | return ret; | |
2447 | } | |
2448 | } | |
2449 | #endif | |
2450 | return 0; | |
2451 | } | |
2452 | ||
2453 | static int mmc_power_off(struct mmc *mmc) | |
2454 | { | |
2455 | mmc_set_clock(mmc, 0, true); | |
2456 | #if CONFIG_IS_ENABLED(DM_MMC) && CONFIG_IS_ENABLED(DM_REGULATOR) | |
2457 | if (mmc->vmmc_supply) { | |
2458 | int ret = regulator_set_enable(mmc->vmmc_supply, false); | |
2459 | ||
2460 | if (ret) { | |
2461 | pr_debug("Error disabling VMMC supply\n"); | |
2462 | return ret; | |
2463 | } | |
2464 | } | |
2465 | #endif | |
2466 | return 0; | |
2467 | } | |
2468 | ||
2469 | static int mmc_power_cycle(struct mmc *mmc) | |
2470 | { | |
2471 | int ret; | |
2472 | ||
2473 | ret = mmc_power_off(mmc); | |
2474 | if (ret) | |
2475 | return ret; | |
2476 | /* | |
2477 | * SD spec recommends at least 1ms of delay. Let's wait for 2ms | |
2478 | * to be on the safer side. | |
2479 | */ | |
2480 | udelay(2000); | |
2481 | return mmc_power_on(mmc); | |
2482 | } | |
2483 | ||
2484 | int mmc_start_init(struct mmc *mmc) | |
2485 | { | |
2486 | bool no_card; | |
2487 | bool uhs_en = supports_uhs(mmc->cfg->host_caps); | |
2488 | int err; | |
2489 | ||
2490 | /* | |
2491 | * all hosts are capable of 1 bit bus-width and able to use the legacy | |
2492 | * timings. | |
2493 | */ | |
2494 | mmc->host_caps = mmc->cfg->host_caps | MMC_CAP(SD_LEGACY) | | |
2495 | MMC_CAP(MMC_LEGACY) | MMC_MODE_1BIT; | |
2496 | ||
2497 | #if !defined(CONFIG_MMC_BROKEN_CD) | |
2498 | /* we pretend there's no card when init is NULL */ | |
2499 | no_card = mmc_getcd(mmc) == 0; | |
2500 | #else | |
2501 | no_card = 0; | |
2502 | #endif | |
2503 | #if !CONFIG_IS_ENABLED(DM_MMC) | |
2504 | no_card = no_card || (mmc->cfg->ops->init == NULL); | |
2505 | #endif | |
2506 | if (no_card) { | |
2507 | mmc->has_init = 0; | |
2508 | #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) | |
2509 | pr_err("MMC: no card present\n"); | |
2510 | #endif | |
2511 | return -ENOMEDIUM; | |
2512 | } | |
2513 | ||
2514 | if (mmc->has_init) | |
2515 | return 0; | |
2516 | ||
2517 | #ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT | |
2518 | mmc_adapter_card_type_ident(); | |
2519 | #endif | |
2520 | err = mmc_power_init(mmc); | |
2521 | if (err) | |
2522 | return err; | |
2523 | ||
2524 | #ifdef CONFIG_MMC_QUIRKS | |
2525 | mmc->quirks = MMC_QUIRK_RETRY_SET_BLOCKLEN | | |
2526 | MMC_QUIRK_RETRY_SEND_CID; | |
2527 | #endif | |
2528 | ||
2529 | err = mmc_power_cycle(mmc); | |
2530 | if (err) { | |
2531 | /* | |
2532 | * if power cycling is not supported, we should not try | |
2533 | * to use the UHS modes, because we wouldn't be able to | |
2534 | * recover from an error during the UHS initialization. | |
2535 | */ | |
2536 | pr_debug("Unable to do a full power cycle. Disabling the UHS modes for safety\n"); | |
2537 | uhs_en = false; | |
2538 | mmc->host_caps &= ~UHS_CAPS; | |
2539 | err = mmc_power_on(mmc); | |
2540 | } | |
2541 | if (err) | |
2542 | return err; | |
2543 | ||
2544 | #if CONFIG_IS_ENABLED(DM_MMC) | |
2545 | /* The device has already been probed ready for use */ | |
2546 | #else | |
2547 | /* made sure it's not NULL earlier */ | |
2548 | err = mmc->cfg->ops->init(mmc); | |
2549 | if (err) | |
2550 | return err; | |
2551 | #endif | |
2552 | mmc->ddr_mode = 0; | |
2553 | ||
2554 | retry: | |
2555 | mmc_set_initial_state(mmc); | |
2556 | mmc_send_init_stream(mmc); | |
2557 | ||
2558 | /* Reset the Card */ | |
2559 | err = mmc_go_idle(mmc); | |
2560 | ||
2561 | if (err) | |
2562 | return err; | |
2563 | ||
2564 | /* The internal partition reset to user partition(0) at every CMD0*/ | |
2565 | mmc_get_blk_desc(mmc)->hwpart = 0; | |
2566 | ||
2567 | /* Test for SD version 2 */ | |
2568 | err = mmc_send_if_cond(mmc); | |
2569 | ||
2570 | /* Now try to get the SD card's operating condition */ | |
2571 | err = sd_send_op_cond(mmc, uhs_en); | |
2572 | if (err && uhs_en) { | |
2573 | uhs_en = false; | |
2574 | mmc_power_cycle(mmc); | |
2575 | goto retry; | |
2576 | } | |
2577 | ||
2578 | /* If the command timed out, we check for an MMC card */ | |
2579 | if (err == -ETIMEDOUT) { | |
2580 | err = mmc_send_op_cond(mmc); | |
2581 | ||
2582 | if (err) { | |
2583 | #if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT) | |
2584 | pr_err("Card did not respond to voltage select!\n"); | |
2585 | #endif | |
2586 | return -EOPNOTSUPP; | |
2587 | } | |
2588 | } | |
2589 | ||
2590 | if (!err) | |
2591 | mmc->init_in_progress = 1; | |
2592 | ||
2593 | return err; | |
2594 | } | |
2595 | ||
2596 | static int mmc_complete_init(struct mmc *mmc) | |
2597 | { | |
2598 | int err = 0; | |
2599 | ||
2600 | mmc->init_in_progress = 0; | |
2601 | if (mmc->op_cond_pending) | |
2602 | err = mmc_complete_op_cond(mmc); | |
2603 | ||
2604 | if (!err) | |
2605 | err = mmc_startup(mmc); | |
2606 | if (err) | |
2607 | mmc->has_init = 0; | |
2608 | else | |
2609 | mmc->has_init = 1; | |
2610 | return err; | |
2611 | } | |
2612 | ||
2613 | int mmc_init(struct mmc *mmc) | |
2614 | { | |
2615 | int err = 0; | |
2616 | __maybe_unused unsigned start; | |
2617 | #if CONFIG_IS_ENABLED(DM_MMC) | |
2618 | struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc->dev); | |
2619 | ||
2620 | upriv->mmc = mmc; | |
2621 | #endif | |
2622 | if (mmc->has_init) | |
2623 | return 0; | |
2624 | ||
2625 | start = get_timer(0); | |
2626 | ||
2627 | if (!mmc->init_in_progress) | |
2628 | err = mmc_start_init(mmc); | |
2629 | ||
2630 | if (!err) | |
2631 | err = mmc_complete_init(mmc); | |
2632 | if (err) | |
2633 | pr_info("%s: %d, time %lu\n", __func__, err, get_timer(start)); | |
2634 | ||
2635 | return err; | |
2636 | } | |
2637 | ||
2638 | int mmc_set_dsr(struct mmc *mmc, u16 val) | |
2639 | { | |
2640 | mmc->dsr = val; | |
2641 | return 0; | |
2642 | } | |
2643 | ||
2644 | /* CPU-specific MMC initializations */ | |
2645 | __weak int cpu_mmc_init(bd_t *bis) | |
2646 | { | |
2647 | return -1; | |
2648 | } | |
2649 | ||
2650 | /* board-specific MMC initializations. */ | |
2651 | __weak int board_mmc_init(bd_t *bis) | |
2652 | { | |
2653 | return -1; | |
2654 | } | |
2655 | ||
2656 | void mmc_set_preinit(struct mmc *mmc, int preinit) | |
2657 | { | |
2658 | mmc->preinit = preinit; | |
2659 | } | |
2660 | ||
2661 | #if CONFIG_IS_ENABLED(DM_MMC) && defined(CONFIG_SPL_BUILD) | |
2662 | static int mmc_probe(bd_t *bis) | |
2663 | { | |
2664 | return 0; | |
2665 | } | |
2666 | #elif CONFIG_IS_ENABLED(DM_MMC) | |
2667 | static int mmc_probe(bd_t *bis) | |
2668 | { | |
2669 | int ret, i; | |
2670 | struct uclass *uc; | |
2671 | struct udevice *dev; | |
2672 | ||
2673 | ret = uclass_get(UCLASS_MMC, &uc); | |
2674 | if (ret) | |
2675 | return ret; | |
2676 | ||
2677 | /* | |
2678 | * Try to add them in sequence order. Really with driver model we | |
2679 | * should allow holes, but the current MMC list does not allow that. | |
2680 | * So if we request 0, 1, 3 we will get 0, 1, 2. | |
2681 | */ | |
2682 | for (i = 0; ; i++) { | |
2683 | ret = uclass_get_device_by_seq(UCLASS_MMC, i, &dev); | |
2684 | if (ret == -ENODEV) | |
2685 | break; | |
2686 | } | |
2687 | uclass_foreach_dev(dev, uc) { | |
2688 | ret = device_probe(dev); | |
2689 | if (ret) | |
2690 | pr_err("%s - probe failed: %d\n", dev->name, ret); | |
2691 | } | |
2692 | ||
2693 | return 0; | |
2694 | } | |
2695 | #else | |
2696 | static int mmc_probe(bd_t *bis) | |
2697 | { | |
2698 | if (board_mmc_init(bis) < 0) | |
2699 | cpu_mmc_init(bis); | |
2700 | ||
2701 | return 0; | |
2702 | } | |
2703 | #endif | |
2704 | ||
2705 | int mmc_initialize(bd_t *bis) | |
2706 | { | |
2707 | static int initialized = 0; | |
2708 | int ret; | |
2709 | if (initialized) /* Avoid initializing mmc multiple times */ | |
2710 | return 0; | |
2711 | initialized = 1; | |
2712 | ||
2713 | #if !CONFIG_IS_ENABLED(BLK) | |
2714 | #if !CONFIG_IS_ENABLED(MMC_TINY) | |
2715 | mmc_list_init(); | |
2716 | #endif | |
2717 | #endif | |
2718 | ret = mmc_probe(bis); | |
2719 | if (ret) | |
2720 | return ret; | |
2721 | ||
2722 | #ifndef CONFIG_SPL_BUILD | |
2723 | print_mmc_devices(','); | |
2724 | #endif | |
2725 | ||
2726 | mmc_do_preinit(); | |
2727 | return 0; | |
2728 | } | |
2729 | ||
2730 | #ifdef CONFIG_CMD_BKOPS_ENABLE | |
2731 | int mmc_set_bkops_enable(struct mmc *mmc) | |
2732 | { | |
2733 | int err; | |
2734 | ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN); | |
2735 | ||
2736 | err = mmc_send_ext_csd(mmc, ext_csd); | |
2737 | if (err) { | |
2738 | puts("Could not get ext_csd register values\n"); | |
2739 | return err; | |
2740 | } | |
2741 | ||
2742 | if (!(ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1)) { | |
2743 | puts("Background operations not supported on device\n"); | |
2744 | return -EMEDIUMTYPE; | |
2745 | } | |
2746 | ||
2747 | if (ext_csd[EXT_CSD_BKOPS_EN] & 0x1) { | |
2748 | puts("Background operations already enabled\n"); | |
2749 | return 0; | |
2750 | } | |
2751 | ||
2752 | err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BKOPS_EN, 1); | |
2753 | if (err) { | |
2754 | puts("Failed to enable manual background operations\n"); | |
2755 | return err; | |
2756 | } | |
2757 | ||
2758 | puts("Enabled manual background operations\n"); | |
2759 | ||
2760 | return 0; | |
2761 | } | |
2762 | #endif |