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mmc: Drop unnecessary case for mmc_probe()
[people/ms/u-boot.git] / drivers / mmc / mmc.c
CommitLineData
272cc70b
AF		 1/*
2 * Copyright 2008, Freescale Semiconductor, Inc
3 * Andy Fleming
4 *
5 * Based vaguely on the Linux code
6 *
1a459660 7 * SPDX-License-Identifier: GPL-2.0+
272cc70b
AF		 8 */
9
10#include <config.h>
11#include <common.h>
12#include <command.h>
8e3332e2
SS		 13#include <dm.h>
14#include <dm/device-internal.h>
d4622df3 15#include <errno.h>
272cc70b
AF		 16#include <mmc.h>
17#include <part.h>
2051aefe 18#include <power/regulator.h>
272cc70b 19#include <malloc.h>
cf92e05c 20#include <memalign.h>
272cc70b 21#include <linux/list.h>
9b1f942c 22#include <div64.h>
da61fa5f 23#include "mmc_private.h"
272cc70b 24
aff5d3c8 25static int mmc_set_signal_voltage(struct mmc *mmc, uint signal_voltage);
fb7c3beb 26static int mmc_power_cycle(struct mmc *mmc);
01298da3 27static int mmc_select_mode_and_width(struct mmc *mmc, uint card_caps);
aff5d3c8 28
b5b838f1
MV		 29#if CONFIG_IS_ENABLED(MMC_TINY)
30static struct mmc mmc_static;
31struct mmc *find_mmc_device(int dev_num)
32{
33 return &mmc_static;
34}
35
36void 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
46struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
47{
48 return &mmc->block_dev;
49}
50#endif
51
e7881d85 52#if !CONFIG_IS_ENABLED(DM_MMC)
c10b85d6 53
f99c2efe 54#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
c10b85d6
JJH		 55static int mmc_wait_dat0(struct mmc *mmc, int state, int timeout)
56{
57 return -ENOSYS;
58}
f99c2efe 59#endif
c10b85d6 60
750121c3 61__weak int board_mmc_getwp(struct mmc *mmc)
d23d8d7e
NK		 62{
63 return -1;
64}
65
66int mmc_getwp(struct mmc *mmc)
67{
68 int wp;
69
70 wp = board_mmc_getwp(mmc);
71
d4e1da4e 72 if (wp < 0) {
93bfd616
PA		 73 if (mmc->cfg->ops->getwp)
74 wp = mmc->cfg->ops->getwp(mmc);
d4e1da4e
PK		 75 else
76 wp = 0;
77 }
d23d8d7e
NK		 78
79 return wp;
80}
81
cee9ab7c
JH		 82__weak int board_mmc_getcd(struct mmc *mmc)
83{
11fdade2
SB		 84 return -1;
85}
8ca51e51 86#endif
11fdade2 87
c0c76eba
SG		 88#ifdef CONFIG_MMC_TRACE
89void mmmc_trace_before_send(struct mmc *mmc, struct mmc_cmd *cmd)
272cc70b 90{
c0c76eba
SG		 91 printf("CMD_SEND:%d\n", cmd->cmdidx);
92 printf("\t\tARG\t\t\t 0x%08X\n", cmd->cmdarg);
93}
8635ff9e 94
c0c76eba
SG		 95void mmmc_trace_after_send(struct mmc *mmc, struct mmc_cmd *cmd, int ret)
96{
5db2fe3a
RR		 97 int i;
98 u8 *ptr;
99
7863ce58
BM		 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]);
5db2fe3a 124 printf("\n");
7863ce58
BM		 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;
53e8e40b 143 }
5db2fe3a 144 }
c0c76eba
SG		 145}
146
147void 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}
5db2fe3a 154#endif
c0c76eba 155
35f9e196
JJH		 156#if CONFIG_IS_ENABLED(MMC_VERBOSE) || defined(DEBUG)
157const 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
05038576
JJH		 181static uint mmc_mode2freq(struct mmc *mmc, enum bus_mode mode)
182{
183 static const int freqs[] = {
1b313aa3 184 [MMC_LEGACY] = 25000000,
05038576
JJH		 185 [SD_LEGACY] = 25000000,
186 [MMC_HS] = 26000000,
187 [SD_HS] = 50000000,
1b313aa3
JC		 188 [MMC_HS_52] = 52000000,
189 [MMC_DDR_52] = 52000000,
05038576
JJH		 190 [UHS_SDR12] = 25000000,
191 [UHS_SDR25] = 50000000,
192 [UHS_SDR50] = 100000000,
05038576 193 [UHS_DDR50] = 50000000,
f99c2efe 194 [UHS_SDR104] = 208000000,
05038576
JJH		 195 [MMC_HS_200] = 200000000,
196 };
197
198 if (mode == MMC_LEGACY)
199 return mmc->legacy_speed;
200 else if (mode >= MMC_MODES_END)
201 return 0;
202 else
203 return freqs[mode];
204}
205
35f9e196
JJH		 206static int mmc_select_mode(struct mmc *mmc, enum bus_mode mode)
207{
208 mmc->selected_mode = mode;
05038576 209 mmc->tran_speed = mmc_mode2freq(mmc, mode);
3862b854 210 mmc->ddr_mode = mmc_is_mode_ddr(mode);
d4d64889
MY		 211 pr_debug("selecting mode %s (freq : %d MHz)\n", mmc_mode_name(mode),
212 mmc->tran_speed / 1000000);
35f9e196
JJH		 213 return 0;
214}
215
e7881d85 216#if !CONFIG_IS_ENABLED(DM_MMC)
c0c76eba
SG		 217int mmc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
218{
219 int ret;
220
221 mmmc_trace_before_send(mmc, cmd);
222 ret = mmc->cfg->ops->send_cmd(mmc, cmd, data);
223 mmmc_trace_after_send(mmc, cmd, ret);
224
8635ff9e 225 return ret;
272cc70b 226}
8ca51e51 227#endif
272cc70b 228
da61fa5f 229int mmc_send_status(struct mmc *mmc, int timeout)
5d4fc8d9
RR		 230{
231 struct mmc_cmd cmd;
d617c426 232 int err, retries = 5;
5d4fc8d9
RR		 233
234 cmd.cmdidx = MMC_CMD_SEND_STATUS;
235 cmd.resp_type = MMC_RSP_R1;
aaf3d41a
MV		 236 if (!mmc_host_is_spi(mmc))
237 cmd.cmdarg = mmc->rca << 16;
5d4fc8d9 238
1677eef4 239 while (1) {
5d4fc8d9 240 err = mmc_send_cmd(mmc, &cmd, NULL);
d617c426
JK		 241 if (!err) {
242 if ((cmd.response[0] & MMC_STATUS_RDY_FOR_DATA) &&
243 (cmd.response[0] & MMC_STATUS_CURR_STATE) !=
244 MMC_STATE_PRG)
245 break;
d0c221fe
JJH		 246
247 if (cmd.response[0] & MMC_STATUS_MASK) {
56196826 248#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
d8e3d420
JJH		 249 pr_err("Status Error: 0x%08X\n",
250 cmd.response[0]);
56196826 251#endif
915ffa52 252 return -ECOMM;
d617c426
JK		 253 }
254 } else if (--retries < 0)
5d4fc8d9 255 return err;
5d4fc8d9 256
1677eef4
AG		 257 if (timeout-- <= 0)
258 break;
5d4fc8d9 259
1677eef4
AG		 260 udelay(1000);
261 }
5d4fc8d9 262
c0c76eba 263 mmc_trace_state(mmc, &cmd);
5b0c942f 264 if (timeout <= 0) {
56196826 265#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
d8e3d420 266 pr_err("Timeout waiting card ready\n");
56196826 267#endif
915ffa52 268 return -ETIMEDOUT;
5d4fc8d9
RR		 269 }
270
271 return 0;
272}
273
da61fa5f 274int mmc_set_blocklen(struct mmc *mmc, int len)
272cc70b
AF		 275{
276 struct mmc_cmd cmd;
83dc4227 277 int err;
272cc70b 278
786e8f81 279 if (mmc->ddr_mode)
d22e3d46
JC		 280 return 0;
281
272cc70b
AF		 282 cmd.cmdidx = MMC_CMD_SET_BLOCKLEN;
283 cmd.resp_type = MMC_RSP_R1;
284 cmd.cmdarg = len;
272cc70b 285
83dc4227
KVA		 286 err = mmc_send_cmd(mmc, &cmd, NULL);
287
288#ifdef CONFIG_MMC_QUIRKS
289 if (err && (mmc->quirks & MMC_QUIRK_RETRY_SET_BLOCKLEN)) {
290 int retries = 4;
291 /*
292 * It has been seen that SET_BLOCKLEN may fail on the first
293 * attempt, let's try a few more time
294 */
295 do {
296 err = mmc_send_cmd(mmc, &cmd, NULL);
297 if (!err)
298 break;
299 } while (retries--);
300 }
301#endif
302
303 return err;
272cc70b
AF		 304}
305
f99c2efe 306#ifdef MMC_SUPPORTS_TUNING
9815e3ba
JJH		 307static const u8 tuning_blk_pattern_4bit[] = {
308 0xff, 0x0f, 0xff, 0x00, 0xff, 0xcc, 0xc3, 0xcc,
309 0xc3, 0x3c, 0xcc, 0xff, 0xfe, 0xff, 0xfe, 0xef,
310 0xff, 0xdf, 0xff, 0xdd, 0xff, 0xfb, 0xff, 0xfb,
311 0xbf, 0xff, 0x7f, 0xff, 0x77, 0xf7, 0xbd, 0xef,
312 0xff, 0xf0, 0xff, 0xf0, 0x0f, 0xfc, 0xcc, 0x3c,
313 0xcc, 0x33, 0xcc, 0xcf, 0xff, 0xef, 0xff, 0xee,
314 0xff, 0xfd, 0xff, 0xfd, 0xdf, 0xff, 0xbf, 0xff,
315 0xbb, 0xff, 0xf7, 0xff, 0xf7, 0x7f, 0x7b, 0xde,
316};
317
318static const u8 tuning_blk_pattern_8bit[] = {
319 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00, 0x00,
320 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc, 0xcc,
321 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff, 0xff,
322 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee, 0xff,
323 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd, 0xdd,
324 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff, 0xbb,
325 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff, 0xff,
326 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee, 0xff,
327 0xff, 0xff, 0xff, 0x00, 0xff, 0xff, 0xff, 0x00,
328 0x00, 0xff, 0xff, 0xcc, 0xcc, 0xcc, 0x33, 0xcc,
329 0xcc, 0xcc, 0x33, 0x33, 0xcc, 0xcc, 0xcc, 0xff,
330 0xff, 0xff, 0xee, 0xff, 0xff, 0xff, 0xee, 0xee,
331 0xff, 0xff, 0xff, 0xdd, 0xff, 0xff, 0xff, 0xdd,
332 0xdd, 0xff, 0xff, 0xff, 0xbb, 0xff, 0xff, 0xff,
333 0xbb, 0xbb, 0xff, 0xff, 0xff, 0x77, 0xff, 0xff,
334 0xff, 0x77, 0x77, 0xff, 0x77, 0xbb, 0xdd, 0xee,
335};
336
337int mmc_send_tuning(struct mmc *mmc, u32 opcode, int *cmd_error)
338{
339 struct mmc_cmd cmd;
340 struct mmc_data data;
341 const u8 *tuning_block_pattern;
342 int size, err;
343
344 if (mmc->bus_width == 8) {
345 tuning_block_pattern = tuning_blk_pattern_8bit;
346 size = sizeof(tuning_blk_pattern_8bit);
347 } else if (mmc->bus_width == 4) {
348 tuning_block_pattern = tuning_blk_pattern_4bit;
349 size = sizeof(tuning_blk_pattern_4bit);
350 } else {
351 return -EINVAL;
352 }
353
354 ALLOC_CACHE_ALIGN_BUFFER(u8, data_buf, size);
355
356 cmd.cmdidx = opcode;
357 cmd.cmdarg = 0;
358 cmd.resp_type = MMC_RSP_R1;
359
360 data.dest = (void *)data_buf;
361 data.blocks = 1;
362 data.blocksize = size;
363 data.flags = MMC_DATA_READ;
364
365 err = mmc_send_cmd(mmc, &cmd, &data);
366 if (err)
367 return err;
368
369 if (memcmp(data_buf, tuning_block_pattern, size))
370 return -EIO;
371
372 return 0;
373}
f99c2efe 374#endif
9815e3ba 375
ff8fef56 376static int mmc_read_blocks(struct mmc *mmc, void *dst, lbaint_t start,
fdbb873e 377 lbaint_t blkcnt)
272cc70b
AF		 378{
379 struct mmc_cmd cmd;
380 struct mmc_data data;
381
4a1a06bc
AS		 382 if (blkcnt > 1)
383 cmd.cmdidx = MMC_CMD_READ_MULTIPLE_BLOCK;
384 else
385 cmd.cmdidx = MMC_CMD_READ_SINGLE_BLOCK;
272cc70b
AF		 386
387 if (mmc->high_capacity)
4a1a06bc 388 cmd.cmdarg = start;
272cc70b 389 else
4a1a06bc 390 cmd.cmdarg = start * mmc->read_bl_len;
272cc70b
AF		 391
392 cmd.resp_type = MMC_RSP_R1;
272cc70b
AF		 393
394 data.dest = dst;
4a1a06bc 395 data.blocks = blkcnt;
272cc70b
AF		 396 data.blocksize = mmc->read_bl_len;
397 data.flags = MMC_DATA_READ;
398
4a1a06bc
AS		 399 if (mmc_send_cmd(mmc, &cmd, &data))
400 return 0;
272cc70b 401
4a1a06bc
AS		 402 if (blkcnt > 1) {
403 cmd.cmdidx = MMC_CMD_STOP_TRANSMISSION;
404 cmd.cmdarg = 0;
405 cmd.resp_type = MMC_RSP_R1b;
4a1a06bc 406 if (mmc_send_cmd(mmc, &cmd, NULL)) {
56196826 407#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
d8e3d420 408 pr_err("mmc fail to send stop cmd\n");
56196826 409#endif
4a1a06bc
AS		 410 return 0;
411 }
272cc70b
AF		 412 }
413
4a1a06bc 414 return blkcnt;
272cc70b
AF		 415}
416
c4d660d4 417#if CONFIG_IS_ENABLED(BLK)
7dba0b93 418ulong mmc_bread(struct udevice *dev, lbaint_t start, lbaint_t blkcnt, void *dst)
33fb211d 419#else
7dba0b93
SG		 420ulong mmc_bread(struct blk_desc *block_dev, lbaint_t start, lbaint_t blkcnt,
421 void *dst)
33fb211d 422#endif
272cc70b 423{
c4d660d4 424#if CONFIG_IS_ENABLED(BLK)
33fb211d
SG		 425 struct blk_desc *block_dev = dev_get_uclass_platdata(dev);
426#endif
bcce53d0 427 int dev_num = block_dev->devnum;
873cc1d7 428 int err;
4a1a06bc
AS		 429 lbaint_t cur, blocks_todo = blkcnt;
430
431 if (blkcnt == 0)
432 return 0;
272cc70b 433
4a1a06bc 434 struct mmc *mmc = find_mmc_device(dev_num);
272cc70b
AF		 435 if (!mmc)
436 return 0;
437
b5b838f1
MV		 438 if (CONFIG_IS_ENABLED(MMC_TINY))
439 err = mmc_switch_part(mmc, block_dev->hwpart);
440 else
441 err = blk_dselect_hwpart(block_dev, block_dev->hwpart);
442
873cc1d7
SW		 443 if (err < 0)
444 return 0;
445
c40fdca6 446 if ((start + blkcnt) > block_dev->lba) {
56196826 447#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
d8e3d420
JJH		 448 pr_err("MMC: block number 0x" LBAF " exceeds max(0x" LBAF ")\n",
449 start + blkcnt, block_dev->lba);
56196826 450#endif
d2bf29e3
LW		 451 return 0;
452 }
272cc70b 453
11692991 454 if (mmc_set_blocklen(mmc, mmc->read_bl_len)) {
d4d64889 455 pr_debug("%s: Failed to set blocklen\n", __func__);
272cc70b 456 return 0;
11692991 457 }
272cc70b 458
4a1a06bc 459 do {
93bfd616
PA		 460 cur = (blocks_todo > mmc->cfg->b_max) ?
461 mmc->cfg->b_max : blocks_todo;
11692991 462 if (mmc_read_blocks(mmc, dst, start, cur) != cur) {
d4d64889 463 pr_debug("%s: Failed to read blocks\n", __func__);
4a1a06bc 464 return 0;
11692991 465 }
4a1a06bc
AS		 466 blocks_todo -= cur;
467 start += cur;
468 dst += cur * mmc->read_bl_len;
469 } while (blocks_todo > 0);
272cc70b
AF		 470
471 return blkcnt;
472}
473
fdbb873e 474static int mmc_go_idle(struct mmc *mmc)
272cc70b
AF		 475{
476 struct mmc_cmd cmd;
477 int err;
478
479 udelay(1000);
480
481 cmd.cmdidx = MMC_CMD_GO_IDLE_STATE;
482 cmd.cmdarg = 0;
483 cmd.resp_type = MMC_RSP_NONE;
272cc70b
AF		 484
485 err = mmc_send_cmd(mmc, &cmd, NULL);
486
487 if (err)
488 return err;
489
490 udelay(2000);
491
492 return 0;
493}
494
f99c2efe 495#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
c10b85d6
JJH		 496static int mmc_switch_voltage(struct mmc *mmc, int signal_voltage)
497{
498 struct mmc_cmd cmd;
499 int err = 0;
500
501 /*
502 * Send CMD11 only if the request is to switch the card to
503 * 1.8V signalling.
504 */
505 if (signal_voltage == MMC_SIGNAL_VOLTAGE_330)
506 return mmc_set_signal_voltage(mmc, signal_voltage);
507
508 cmd.cmdidx = SD_CMD_SWITCH_UHS18V;
509 cmd.cmdarg = 0;
510 cmd.resp_type = MMC_RSP_R1;
511
512 err = mmc_send_cmd(mmc, &cmd, NULL);
513 if (err)
514 return err;
515
516 if (!mmc_host_is_spi(mmc) && (cmd.response[0] & MMC_STATUS_ERROR))
517 return -EIO;
518
519 /*
520 * The card should drive cmd and dat[0:3] low immediately
521 * after the response of cmd11, but wait 100 us to be sure
522 */
523 err = mmc_wait_dat0(mmc, 0, 100);
524 if (err == -ENOSYS)
525 udelay(100);
526 else if (err)
527 return -ETIMEDOUT;
528
529 /*
530 * During a signal voltage level switch, the clock must be gated
531 * for 5 ms according to the SD spec
532 */
533 mmc_set_clock(mmc, mmc->clock, true);
534
535 err = mmc_set_signal_voltage(mmc, signal_voltage);
536 if (err)
537 return err;
538
539 /* Keep clock gated for at least 10 ms, though spec only says 5 ms */
540 mdelay(10);
541 mmc_set_clock(mmc, mmc->clock, false);
542
543 /*
544 * Failure to switch is indicated by the card holding
545 * dat[0:3] low. Wait for at least 1 ms according to spec
546 */
547 err = mmc_wait_dat0(mmc, 1, 1000);
548 if (err == -ENOSYS)
549 udelay(1000);
550 else if (err)
551 return -ETIMEDOUT;
552
553 return 0;
554}
f99c2efe 555#endif
c10b85d6
JJH		 556
557static int sd_send_op_cond(struct mmc *mmc, bool uhs_en)
272cc70b
AF		 558{
559 int timeout = 1000;
560 int err;
561 struct mmc_cmd cmd;
562
1677eef4 563 while (1) {
272cc70b
AF		 564 cmd.cmdidx = MMC_CMD_APP_CMD;
565 cmd.resp_type = MMC_RSP_R1;
566 cmd.cmdarg = 0;
272cc70b
AF		 567
568 err = mmc_send_cmd(mmc, &cmd, NULL);
569
570 if (err)
571 return err;
572
573 cmd.cmdidx = SD_CMD_APP_SEND_OP_COND;
574 cmd.resp_type = MMC_RSP_R3;
250de12b
SB		 575
576 /*
577 * Most cards do not answer if some reserved bits
578 * in the ocr are set. However, Some controller
579 * can set bit 7 (reserved for low voltages), but
580 * how to manage low voltages SD card is not yet
581 * specified.
582 */
d52ebf10 583 cmd.cmdarg = mmc_host_is_spi(mmc) ? 0 :
93bfd616 584 (mmc->cfg->voltages & 0xff8000);
272cc70b
AF		 585
586 if (mmc->version == SD_VERSION_2)
587 cmd.cmdarg |= OCR_HCS;
588
c10b85d6
JJH		 589 if (uhs_en)
590 cmd.cmdarg |= OCR_S18R;
591
272cc70b
AF		 592 err = mmc_send_cmd(mmc, &cmd, NULL);
593
594 if (err)
595 return err;
596
1677eef4
AG		 597 if (cmd.response[0] & OCR_BUSY)
598 break;
599
600 if (timeout-- <= 0)
915ffa52 601 return -EOPNOTSUPP;
272cc70b 602
1677eef4
AG		 603 udelay(1000);
604 }
272cc70b
AF		 605
606 if (mmc->version != SD_VERSION_2)
607 mmc->version = SD_VERSION_1_0;
608
d52ebf10
TC		 609 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
610 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
611 cmd.resp_type = MMC_RSP_R3;
612 cmd.cmdarg = 0;
d52ebf10
TC		 613
614 err = mmc_send_cmd(mmc, &cmd, NULL);
615
616 if (err)
617 return err;
618 }
619
998be3dd 620 mmc->ocr = cmd.response[0];
272cc70b 621
f99c2efe 622#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
c10b85d6
JJH		 623 if (uhs_en && !(mmc_host_is_spi(mmc)) && (cmd.response[0] & 0x41000000)
624 == 0x41000000) {
625 err = mmc_switch_voltage(mmc, MMC_SIGNAL_VOLTAGE_180);
626 if (err)
627 return err;
628 }
f99c2efe 629#endif
c10b85d6 630
272cc70b
AF		 631 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
632 mmc->rca = 0;
633
634 return 0;
635}
636
5289b535 637static int mmc_send_op_cond_iter(struct mmc *mmc, int use_arg)
272cc70b 638{
5289b535 639 struct mmc_cmd cmd;
272cc70b
AF		 640 int err;
641
5289b535
AG		 642 cmd.cmdidx = MMC_CMD_SEND_OP_COND;
643 cmd.resp_type = MMC_RSP_R3;
644 cmd.cmdarg = 0;
5a20397b
RH		 645 if (use_arg && !mmc_host_is_spi(mmc))
646 cmd.cmdarg = OCR_HCS |
93bfd616 647 (mmc->cfg->voltages &
a626c8d4
AG		 648 (mmc->ocr & OCR_VOLTAGE_MASK)) |
649 (mmc->ocr & OCR_ACCESS_MODE);
e9550449 650
5289b535 651 err = mmc_send_cmd(mmc, &cmd, NULL);
e9550449
CLC		 652 if (err)
653 return err;
5289b535 654 mmc->ocr = cmd.response[0];
e9550449
CLC		 655 return 0;
656}
657
750121c3 658static int mmc_send_op_cond(struct mmc *mmc)
e9550449 659{
e9550449
CLC		 660 int err, i;
661
272cc70b
AF		 662 /* Some cards seem to need this */
663 mmc_go_idle(mmc);
664
31cacbab 665 /* Asking to the card its capabilities */
e9550449 666 for (i = 0; i < 2; i++) {
5289b535 667 err = mmc_send_op_cond_iter(mmc, i != 0);
e9550449
CLC		 668 if (err)
669 return err;
cd6881b5 670
e9550449 671 /* exit if not busy (flag seems to be inverted) */
a626c8d4 672 if (mmc->ocr & OCR_BUSY)
bd47c135 673 break;
e9550449 674 }
bd47c135
AG		 675 mmc->op_cond_pending = 1;
676 return 0;
e9550449 677}
cd6881b5 678
750121c3 679static int mmc_complete_op_cond(struct mmc *mmc)
e9550449
CLC		 680{
681 struct mmc_cmd cmd;
682 int timeout = 1000;
683 uint start;
684 int err;
cd6881b5 685
e9550449 686 mmc->op_cond_pending = 0;
cc17c01f 687 if (!(mmc->ocr & OCR_BUSY)) {
d188b113
YL		 688 /* Some cards seem to need this */
689 mmc_go_idle(mmc);
690
cc17c01f 691 start = get_timer(0);
1677eef4 692 while (1) {
cc17c01f
AG		 693 err = mmc_send_op_cond_iter(mmc, 1);
694 if (err)
695 return err;
1677eef4
AG		 696 if (mmc->ocr & OCR_BUSY)
697 break;
cc17c01f 698 if (get_timer(start) > timeout)
915ffa52 699 return -EOPNOTSUPP;
cc17c01f 700 udelay(100);
1677eef4 701 }
cc17c01f 702 }
272cc70b 703
d52ebf10
TC		 704 if (mmc_host_is_spi(mmc)) { /* read OCR for spi */
705 cmd.cmdidx = MMC_CMD_SPI_READ_OCR;
706 cmd.resp_type = MMC_RSP_R3;
707 cmd.cmdarg = 0;
d52ebf10
TC		 708
709 err = mmc_send_cmd(mmc, &cmd, NULL);
710
711 if (err)
712 return err;
a626c8d4
AG		 713
714 mmc->ocr = cmd.response[0];
d52ebf10
TC		 715 }
716
272cc70b 717 mmc->version = MMC_VERSION_UNKNOWN;
272cc70b
AF		 718
719 mmc->high_capacity = ((mmc->ocr & OCR_HCS) == OCR_HCS);
def816a2 720 mmc->rca = 1;
272cc70b
AF		 721
722 return 0;
723}
724
725
fdbb873e 726static int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd)
272cc70b
AF		 727{
728 struct mmc_cmd cmd;
729 struct mmc_data data;
730 int err;
731
732 /* Get the Card Status Register */
733 cmd.cmdidx = MMC_CMD_SEND_EXT_CSD;
734 cmd.resp_type = MMC_RSP_R1;
735 cmd.cmdarg = 0;
272cc70b 736
cdfd1ac6 737 data.dest = (char *)ext_csd;
272cc70b 738 data.blocks = 1;
8bfa195e 739 data.blocksize = MMC_MAX_BLOCK_LEN;
272cc70b
AF		 740 data.flags = MMC_DATA_READ;
741
742 err = mmc_send_cmd(mmc, &cmd, &data);
743
744 return err;
745}
746
c40704f4 747int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
272cc70b
AF		 748{
749 struct mmc_cmd cmd;
5d4fc8d9 750 int timeout = 1000;
a9003dc6 751 int retries = 3;
5d4fc8d9 752 int ret;
272cc70b
AF		 753
754 cmd.cmdidx = MMC_CMD_SWITCH;
755 cmd.resp_type = MMC_RSP_R1b;
756 cmd.cmdarg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
5d4fc8d9
RR		 757 (index << 16) |
758 (value << 8);
272cc70b 759
a9003dc6
MR		 760 while (retries > 0) {
761 ret = mmc_send_cmd(mmc, &cmd, NULL);
5d4fc8d9 762
a9003dc6
MR		 763 /* Waiting for the ready status */
764 if (!ret) {
765 ret = mmc_send_status(mmc, timeout);
766 return ret;
767 }
768
769 retries--;
770 }
5d4fc8d9
RR		 771
772 return ret;
773
272cc70b
AF		 774}
775
3862b854 776static int mmc_set_card_speed(struct mmc *mmc, enum bus_mode mode)
272cc70b 777{
272cc70b 778 int err;
3862b854
JJH		 779 int speed_bits;
780
781 ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
782
783 switch (mode) {
784 case MMC_HS:
785 case MMC_HS_52:
786 case MMC_DDR_52:
787 speed_bits = EXT_CSD_TIMING_HS;
634d4849 788 break;
baef2070 789#if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT)
634d4849
KVA		 790 case MMC_HS_200:
791 speed_bits = EXT_CSD_TIMING_HS200;
792 break;
baef2070 793#endif
3862b854
JJH		 794 case MMC_LEGACY:
795 speed_bits = EXT_CSD_TIMING_LEGACY;
796 break;
797 default:
798 return -EINVAL;
799 }
800 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING,
801 speed_bits);
802 if (err)
803 return err;
804
805 if ((mode == MMC_HS) || (mode == MMC_HS_52)) {
806 /* Now check to see that it worked */
807 err = mmc_send_ext_csd(mmc, test_csd);
808 if (err)
809 return err;
810
811 /* No high-speed support */
812 if (!test_csd[EXT_CSD_HS_TIMING])
813 return -ENOTSUPP;
814 }
815
816 return 0;
817}
818
819static int mmc_get_capabilities(struct mmc *mmc)
820{
821 u8 *ext_csd = mmc->ext_csd;
822 char cardtype;
272cc70b 823
00e446fa 824 mmc->card_caps = MMC_MODE_1BIT | MMC_CAP(MMC_LEGACY);
272cc70b 825
d52ebf10
TC		 826 if (mmc_host_is_spi(mmc))
827 return 0;
828
272cc70b
AF		 829 /* Only version 4 supports high-speed */
830 if (mmc->version < MMC_VERSION_4)
831 return 0;
832
3862b854 833 if (!ext_csd) {
d8e3d420 834 pr_err("No ext_csd found!\n"); /* this should enver happen */
3862b854
JJH		 835 return -ENOTSUPP;
836 }
272cc70b 837
3862b854 838 mmc->card_caps |= MMC_MODE_4BIT | MMC_MODE_8BIT;
272cc70b 839
634d4849 840 cardtype = ext_csd[EXT_CSD_CARD_TYPE] & 0x3f;
bc1e3272 841 mmc->cardtype = cardtype;
272cc70b 842
baef2070 843#if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT)
634d4849
KVA		 844 if (cardtype & (EXT_CSD_CARD_TYPE_HS200_1_2V |
845 EXT_CSD_CARD_TYPE_HS200_1_8V)) {
846 mmc->card_caps |= MMC_MODE_HS200;
847 }
baef2070 848#endif
d22e3d46 849 if (cardtype & EXT_CSD_CARD_TYPE_52) {
3862b854 850 if (cardtype & EXT_CSD_CARD_TYPE_DDR_52)
d22e3d46 851 mmc->card_caps |= MMC_MODE_DDR_52MHz;
3862b854 852 mmc->card_caps |= MMC_MODE_HS_52MHz;
d22e3d46 853 }
3862b854
JJH		 854 if (cardtype & EXT_CSD_CARD_TYPE_26)
855 mmc->card_caps |= MMC_MODE_HS;
272cc70b
AF		 856
857 return 0;
858}
859
f866a46d
SW		 860static int mmc_set_capacity(struct mmc *mmc, int part_num)
861{
862 switch (part_num) {
863 case 0:
864 mmc->capacity = mmc->capacity_user;
865 break;
866 case 1:
867 case 2:
868 mmc->capacity = mmc->capacity_boot;
869 break;
870 case 3:
871 mmc->capacity = mmc->capacity_rpmb;
872 break;
873 case 4:
874 case 5:
875 case 6:
876 case 7:
877 mmc->capacity = mmc->capacity_gp[part_num - 4];
878 break;
879 default:
880 return -1;
881 }
882
c40fdca6 883 mmc_get_blk_desc(mmc)->lba = lldiv(mmc->capacity, mmc->read_bl_len);
f866a46d
SW		 884
885 return 0;
886}
887
f99c2efe 888#if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT)
01298da3
JJH		 889static int mmc_boot_part_access_chk(struct mmc *mmc, unsigned int part_num)
890{
891 int forbidden = 0;
892 bool change = false;
893
894 if (part_num & PART_ACCESS_MASK)
895 forbidden = MMC_CAP(MMC_HS_200);
896
897 if (MMC_CAP(mmc->selected_mode) & forbidden) {
d4d64889
MY		 898 pr_debug("selected mode (%s) is forbidden for part %d\n",
899 mmc_mode_name(mmc->selected_mode), part_num);
01298da3
JJH		 900 change = true;
901 } else if (mmc->selected_mode != mmc->best_mode) {
d4d64889 902 pr_debug("selected mode is not optimal\n");
01298da3
JJH		 903 change = true;
904 }
905
906 if (change)
907 return mmc_select_mode_and_width(mmc,
908 mmc->card_caps & ~forbidden);
909
910 return 0;
911}
f99c2efe
JJH		 912#else
913static inline int mmc_boot_part_access_chk(struct mmc *mmc,
914 unsigned int part_num)
915{
916 return 0;
917}
918#endif
01298da3 919
7dba0b93 920int mmc_switch_part(struct mmc *mmc, unsigned int part_num)
bc897b1d 921{
f866a46d 922 int ret;
bc897b1d 923
01298da3
JJH		 924 ret = mmc_boot_part_access_chk(mmc, part_num);
925 if (ret)
926 return ret;
927
f866a46d
SW		 928 ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
929 (mmc->part_config & ~PART_ACCESS_MASK)
930 | (part_num & PART_ACCESS_MASK));
f866a46d 931
6dc93e70
PB		 932 /*
933 * Set the capacity if the switch succeeded or was intended
934 * to return to representing the raw device.
935 */
873cc1d7 936 if ((ret == 0) || ((ret == -ENODEV) && (part_num == 0))) {
6dc93e70 937 ret = mmc_set_capacity(mmc, part_num);
fdbb139f 938 mmc_get_blk_desc(mmc)->hwpart = part_num;
873cc1d7 939 }
6dc93e70
PB		 940
941 return ret;
bc897b1d
LW		 942}
943
cf17789e 944#if CONFIG_IS_ENABLED(MMC_HW_PARTITIONING)
ac9da0e0
DSC		 945int mmc_hwpart_config(struct mmc *mmc,
946 const struct mmc_hwpart_conf *conf,
947 enum mmc_hwpart_conf_mode mode)
948{
949 u8 part_attrs = 0;
950 u32 enh_size_mult;
951 u32 enh_start_addr;
952 u32 gp_size_mult[4];
953 u32 max_enh_size_mult;
954 u32 tot_enh_size_mult = 0;
8dda5b0e 955 u8 wr_rel_set;
ac9da0e0
DSC		 956 int i, pidx, err;
957 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
958
959 if (mode < MMC_HWPART_CONF_CHECK || mode > MMC_HWPART_CONF_COMPLETE)
960 return -EINVAL;
961
962 if (IS_SD(mmc) || (mmc->version < MMC_VERSION_4_41)) {
d8e3d420 963 pr_err("eMMC >= 4.4 required for enhanced user data area\n");
ac9da0e0
DSC		 964 return -EMEDIUMTYPE;
965 }
966
967 if (!(mmc->part_support & PART_SUPPORT)) {
d8e3d420 968 pr_err("Card does not support partitioning\n");
ac9da0e0
DSC		 969 return -EMEDIUMTYPE;
970 }
971
972 if (!mmc->hc_wp_grp_size) {
d8e3d420 973 pr_err("Card does not define HC WP group size\n");
ac9da0e0
DSC		 974 return -EMEDIUMTYPE;
975 }
976
977 /* check partition alignment and total enhanced size */
978 if (conf->user.enh_size) {
979 if (conf->user.enh_size % mmc->hc_wp_grp_size ||
980 conf->user.enh_start % mmc->hc_wp_grp_size) {
d8e3d420 981 pr_err("User data enhanced area not HC WP group "
ac9da0e0
DSC		 982 "size aligned\n");
983 return -EINVAL;
984 }
985 part_attrs |= EXT_CSD_ENH_USR;
986 enh_size_mult = conf->user.enh_size / mmc->hc_wp_grp_size;
987 if (mmc->high_capacity) {
988 enh_start_addr = conf->user.enh_start;
989 } else {
990 enh_start_addr = (conf->user.enh_start << 9);
991 }
992 } else {
993 enh_size_mult = 0;
994 enh_start_addr = 0;
995 }
996 tot_enh_size_mult += enh_size_mult;
997
998 for (pidx = 0; pidx < 4; pidx++) {
999 if (conf->gp_part[pidx].size % mmc->hc_wp_grp_size) {
d8e3d420 1000 pr_err("GP%i partition not HC WP group size "
ac9da0e0
DSC		 1001 "aligned\n", pidx+1);
1002 return -EINVAL;
1003 }
1004 gp_size_mult[pidx] = conf->gp_part[pidx].size / mmc->hc_wp_grp_size;
1005 if (conf->gp_part[pidx].size && conf->gp_part[pidx].enhanced) {
1006 part_attrs |= EXT_CSD_ENH_GP(pidx);
1007 tot_enh_size_mult += gp_size_mult[pidx];
1008 }
1009 }
1010
1011 if (part_attrs && ! (mmc->part_support & ENHNCD_SUPPORT)) {
d8e3d420 1012 pr_err("Card does not support enhanced attribute\n");
ac9da0e0
DSC		 1013 return -EMEDIUMTYPE;
1014 }
1015
1016 err = mmc_send_ext_csd(mmc, ext_csd);
1017 if (err)
1018 return err;
1019
1020 max_enh_size_mult =
1021 (ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT+2] << 16) +
1022 (ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT+1] << 8) +
1023 ext_csd[EXT_CSD_MAX_ENH_SIZE_MULT];
1024 if (tot_enh_size_mult > max_enh_size_mult) {
d8e3d420 1025 pr_err("Total enhanced size exceeds maximum (%u > %u)\n",
ac9da0e0
DSC		 1026 tot_enh_size_mult, max_enh_size_mult);
1027 return -EMEDIUMTYPE;
1028 }
1029
8dda5b0e
DSC		 1030 /* The default value of EXT_CSD_WR_REL_SET is device
1031 * dependent, the values can only be changed if the
1032 * EXT_CSD_HS_CTRL_REL bit is set. The values can be
1033 * changed only once and before partitioning is completed. */
1034 wr_rel_set = ext_csd[EXT_CSD_WR_REL_SET];
1035 if (conf->user.wr_rel_change) {
1036 if (conf->user.wr_rel_set)
1037 wr_rel_set |= EXT_CSD_WR_DATA_REL_USR;
1038 else
1039 wr_rel_set &= ~EXT_CSD_WR_DATA_REL_USR;
1040 }
1041 for (pidx = 0; pidx < 4; pidx++) {
1042 if (conf->gp_part[pidx].wr_rel_change) {
1043 if (conf->gp_part[pidx].wr_rel_set)
1044 wr_rel_set |= EXT_CSD_WR_DATA_REL_GP(pidx);
1045 else
1046 wr_rel_set &= ~EXT_CSD_WR_DATA_REL_GP(pidx);
1047 }
1048 }
1049
1050 if (wr_rel_set != ext_csd[EXT_CSD_WR_REL_SET] &&
1051 !(ext_csd[EXT_CSD_WR_REL_PARAM] & EXT_CSD_HS_CTRL_REL)) {
1052 puts("Card does not support host controlled partition write "
1053 "reliability settings\n");
1054 return -EMEDIUMTYPE;
1055 }
1056
ac9da0e0
DSC		 1057 if (ext_csd[EXT_CSD_PARTITION_SETTING] &
1058 EXT_CSD_PARTITION_SETTING_COMPLETED) {
d8e3d420 1059 pr_err("Card already partitioned\n");
ac9da0e0
DSC		 1060 return -EPERM;
1061 }
1062
1063 if (mode == MMC_HWPART_CONF_CHECK)
1064 return 0;
1065
1066 /* Partitioning requires high-capacity size definitions */
1067 if (!(ext_csd[EXT_CSD_ERASE_GROUP_DEF] & 0x01)) {
1068 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1069 EXT_CSD_ERASE_GROUP_DEF, 1);
1070
1071 if (err)
1072 return err;
1073
1074 ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1;
1075
1076 /* update erase group size to be high-capacity */
1077 mmc->erase_grp_size =
1078 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 1024;
1079
1080 }
1081
1082 /* all OK, write the configuration */
1083 for (i = 0; i < 4; i++) {
1084 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1085 EXT_CSD_ENH_START_ADDR+i,
1086 (enh_start_addr >> (i*8)) & 0xFF);
1087 if (err)
1088 return err;
1089 }
1090 for (i = 0; i < 3; i++) {
1091 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1092 EXT_CSD_ENH_SIZE_MULT+i,
1093 (enh_size_mult >> (i*8)) & 0xFF);
1094 if (err)
1095 return err;
1096 }
1097 for (pidx = 0; pidx < 4; pidx++) {
1098 for (i = 0; i < 3; i++) {
1099 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1100 EXT_CSD_GP_SIZE_MULT+pidx*3+i,
1101 (gp_size_mult[pidx] >> (i*8)) & 0xFF);
1102 if (err)
1103 return err;
1104 }
1105 }
1106 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1107 EXT_CSD_PARTITIONS_ATTRIBUTE, part_attrs);
1108 if (err)
1109 return err;
1110
1111 if (mode == MMC_HWPART_CONF_SET)
1112 return 0;
1113
8dda5b0e
DSC		 1114 /* The WR_REL_SET is a write-once register but shall be
1115 * written before setting PART_SETTING_COMPLETED. As it is
1116 * write-once we can only write it when completing the
1117 * partitioning. */
1118 if (wr_rel_set != ext_csd[EXT_CSD_WR_REL_SET]) {
1119 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1120 EXT_CSD_WR_REL_SET, wr_rel_set);
1121 if (err)
1122 return err;
1123 }
1124
ac9da0e0
DSC		 1125 /* Setting PART_SETTING_COMPLETED confirms the partition
1126 * configuration but it only becomes effective after power
1127 * cycle, so we do not adjust the partition related settings
1128 * in the mmc struct. */
1129
1130 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1131 EXT_CSD_PARTITION_SETTING,
1132 EXT_CSD_PARTITION_SETTING_COMPLETED);
1133 if (err)
1134 return err;
1135
1136 return 0;
1137}
cf17789e 1138#endif
ac9da0e0 1139
e7881d85 1140#if !CONFIG_IS_ENABLED(DM_MMC)
48972d90
TR		 1141int mmc_getcd(struct mmc *mmc)
1142{
1143 int cd;
1144
1145 cd = board_mmc_getcd(mmc);
1146
d4e1da4e 1147 if (cd < 0) {
93bfd616
PA		 1148 if (mmc->cfg->ops->getcd)
1149 cd = mmc->cfg->ops->getcd(mmc);
d4e1da4e
PK		 1150 else
1151 cd = 1;
1152 }
48972d90
TR		 1153
1154 return cd;
1155}
8ca51e51 1156#endif
48972d90 1157
fdbb873e 1158static int sd_switch(struct mmc *mmc, int mode, int group, u8 value, u8 *resp)
272cc70b
AF		 1159{
1160 struct mmc_cmd cmd;
1161 struct mmc_data data;
1162
1163 /* Switch the frequency */
1164 cmd.cmdidx = SD_CMD_SWITCH_FUNC;
1165 cmd.resp_type = MMC_RSP_R1;
1166 cmd.cmdarg = (mode << 31) | 0xffffff;
1167 cmd.cmdarg &= ~(0xf << (group * 4));
1168 cmd.cmdarg |= value << (group * 4);
272cc70b
AF		 1169
1170 data.dest = (char *)resp;
1171 data.blocksize = 64;
1172 data.blocks = 1;
1173 data.flags = MMC_DATA_READ;
1174
1175 return mmc_send_cmd(mmc, &cmd, &data);
1176}
1177
1178
d0c221fe 1179static int sd_get_capabilities(struct mmc *mmc)
272cc70b
AF		 1180{
1181 int err;
1182 struct mmc_cmd cmd;
18e7c8f6
SM		 1183 ALLOC_CACHE_ALIGN_BUFFER(__be32, scr, 2);
1184 ALLOC_CACHE_ALIGN_BUFFER(__be32, switch_status, 16);
272cc70b
AF		 1185 struct mmc_data data;
1186 int timeout;
f99c2efe 1187#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
c10b85d6 1188 u32 sd3_bus_mode;
f99c2efe 1189#endif
272cc70b 1190
00e446fa 1191 mmc->card_caps = MMC_MODE_1BIT | MMC_CAP(SD_LEGACY);
272cc70b 1192
d52ebf10
TC		 1193 if (mmc_host_is_spi(mmc))
1194 return 0;
1195
272cc70b
AF		 1196 /* Read the SCR to find out if this card supports higher speeds */
1197 cmd.cmdidx = MMC_CMD_APP_CMD;
1198 cmd.resp_type = MMC_RSP_R1;
1199 cmd.cmdarg = mmc->rca << 16;
272cc70b
AF		 1200
1201 err = mmc_send_cmd(mmc, &cmd, NULL);
1202
1203 if (err)
1204 return err;
1205
1206 cmd.cmdidx = SD_CMD_APP_SEND_SCR;
1207 cmd.resp_type = MMC_RSP_R1;
1208 cmd.cmdarg = 0;
272cc70b
AF		 1209
1210 timeout = 3;
1211
1212retry_scr:
f781dd38 1213 data.dest = (char *)scr;
272cc70b
AF		 1214 data.blocksize = 8;
1215 data.blocks = 1;
1216 data.flags = MMC_DATA_READ;
1217
1218 err = mmc_send_cmd(mmc, &cmd, &data);
1219
1220 if (err) {
1221 if (timeout--)
1222 goto retry_scr;
1223
1224 return err;
1225 }
1226
4e3d89ba
YK		 1227 mmc->scr[0] = __be32_to_cpu(scr[0]);
1228 mmc->scr[1] = __be32_to_cpu(scr[1]);
272cc70b
AF		 1229
1230 switch ((mmc->scr[0] >> 24) & 0xf) {
53e8e40b
BM		 1231 case 0:
1232 mmc->version = SD_VERSION_1_0;
1233 break;
1234 case 1:
1235 mmc->version = SD_VERSION_1_10;
1236 break;
1237 case 2:
1238 mmc->version = SD_VERSION_2;
1239 if ((mmc->scr[0] >> 15) & 0x1)
1240 mmc->version = SD_VERSION_3;
1241 break;
1242 default:
1243 mmc->version = SD_VERSION_1_0;
1244 break;
272cc70b
AF		 1245 }
1246
b44c7083
AS		 1247 if (mmc->scr[0] & SD_DATA_4BIT)
1248 mmc->card_caps |= MMC_MODE_4BIT;
1249
272cc70b
AF		 1250 /* Version 1.0 doesn't support switching */
1251 if (mmc->version == SD_VERSION_1_0)
1252 return 0;
1253
1254 timeout = 4;
1255 while (timeout--) {
1256 err = sd_switch(mmc, SD_SWITCH_CHECK, 0, 1,
f781dd38 1257 (u8 *)switch_status);
272cc70b
AF		 1258
1259 if (err)
1260 return err;
1261
1262 /* The high-speed function is busy. Try again */
4e3d89ba 1263 if (!(__be32_to_cpu(switch_status[7]) & SD_HIGHSPEED_BUSY))
272cc70b
AF		 1264 break;
1265 }
1266
272cc70b 1267 /* If high-speed isn't supported, we return */
d0c221fe
JJH		 1268 if (__be32_to_cpu(switch_status[3]) & SD_HIGHSPEED_SUPPORTED)
1269 mmc->card_caps |= MMC_CAP(SD_HS);
272cc70b 1270
f99c2efe 1271#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
c10b85d6
JJH		 1272 /* Version before 3.0 don't support UHS modes */
1273 if (mmc->version < SD_VERSION_3)
1274 return 0;
1275
1276 sd3_bus_mode = __be32_to_cpu(switch_status[3]) >> 16 & 0x1f;
1277 if (sd3_bus_mode & SD_MODE_UHS_SDR104)
1278 mmc->card_caps |= MMC_CAP(UHS_SDR104);
1279 if (sd3_bus_mode & SD_MODE_UHS_SDR50)
1280 mmc->card_caps |= MMC_CAP(UHS_SDR50);
1281 if (sd3_bus_mode & SD_MODE_UHS_SDR25)
1282 mmc->card_caps |= MMC_CAP(UHS_SDR25);
1283 if (sd3_bus_mode & SD_MODE_UHS_SDR12)
1284 mmc->card_caps |= MMC_CAP(UHS_SDR12);
1285 if (sd3_bus_mode & SD_MODE_UHS_DDR50)
1286 mmc->card_caps |= MMC_CAP(UHS_DDR50);
f99c2efe 1287#endif
c10b85d6 1288
d0c221fe
JJH		 1289 return 0;
1290}
1291
1292static int sd_set_card_speed(struct mmc *mmc, enum bus_mode mode)
1293{
1294 int err;
1295
1296 ALLOC_CACHE_ALIGN_BUFFER(uint, switch_status, 16);
c10b85d6 1297 int speed;
2c3fbf4c 1298
c10b85d6
JJH		 1299 switch (mode) {
1300 case SD_LEGACY:
c10b85d6
JJH		 1301 speed = UHS_SDR12_BUS_SPEED;
1302 break;
1303 case SD_HS:
baef2070
JJH		 1304 speed = HIGH_SPEED_BUS_SPEED;
1305 break;
1306#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
1307 case UHS_SDR12:
1308 speed = UHS_SDR12_BUS_SPEED;
1309 break;
c10b85d6
JJH		 1310 case UHS_SDR25:
1311 speed = UHS_SDR25_BUS_SPEED;
1312 break;
1313 case UHS_SDR50:
1314 speed = UHS_SDR50_BUS_SPEED;
1315 break;
1316 case UHS_DDR50:
1317 speed = UHS_DDR50_BUS_SPEED;
1318 break;
1319 case UHS_SDR104:
1320 speed = UHS_SDR104_BUS_SPEED;
1321 break;
baef2070 1322#endif
c10b85d6
JJH		 1323 default:
1324 return -EINVAL;
1325 }
1326
1327 err = sd_switch(mmc, SD_SWITCH_SWITCH, 0, speed, (u8 *)switch_status);
d0c221fe
JJH		 1328 if (err)
1329 return err;
1330
a0276f3e 1331 if (((__be32_to_cpu(switch_status[4]) >> 24) & 0xF) != speed)
d0c221fe 1332 return -ENOTSUPP;
272cc70b 1333
d0c221fe
JJH		 1334 return 0;
1335}
1336
1337int sd_select_bus_width(struct mmc *mmc, int w)
1338{
1339 int err;
1340 struct mmc_cmd cmd;
1341
1342 if ((w != 4) && (w != 1))
1343 return -EINVAL;
1344
1345 cmd.cmdidx = MMC_CMD_APP_CMD;
1346 cmd.resp_type = MMC_RSP_R1;
1347 cmd.cmdarg = mmc->rca << 16;
1348
1349 err = mmc_send_cmd(mmc, &cmd, NULL);
272cc70b
AF		 1350 if (err)
1351 return err;
1352
d0c221fe
JJH		 1353 cmd.cmdidx = SD_CMD_APP_SET_BUS_WIDTH;
1354 cmd.resp_type = MMC_RSP_R1;
1355 if (w == 4)
1356 cmd.cmdarg = 2;
1357 else if (w == 1)
1358 cmd.cmdarg = 0;
1359 err = mmc_send_cmd(mmc, &cmd, NULL);
1360 if (err)
1361 return err;
272cc70b
AF		 1362
1363 return 0;
1364}
1365
5b2e72f3 1366#if CONFIG_IS_ENABLED(MMC_WRITE)
3697e599
PF		 1367static int sd_read_ssr(struct mmc *mmc)
1368{
5b2e72f3
JJH		 1369 static const unsigned int sd_au_size[] = {
1370 0, SZ_16K / 512, SZ_32K / 512,
1371 SZ_64K / 512, SZ_128K / 512, SZ_256K / 512,
1372 SZ_512K / 512, SZ_1M / 512, SZ_2M / 512,
1373 SZ_4M / 512, SZ_8M / 512, (SZ_8M + SZ_4M) / 512,
1374 SZ_16M / 512, (SZ_16M + SZ_8M) / 512, SZ_32M / 512,
1375 SZ_64M / 512,
1376 };
3697e599
PF		 1377 int err, i;
1378 struct mmc_cmd cmd;
1379 ALLOC_CACHE_ALIGN_BUFFER(uint, ssr, 16);
1380 struct mmc_data data;
1381 int timeout = 3;
1382 unsigned int au, eo, et, es;
1383
1384 cmd.cmdidx = MMC_CMD_APP_CMD;
1385 cmd.resp_type = MMC_RSP_R1;
1386 cmd.cmdarg = mmc->rca << 16;
1387
1388 err = mmc_send_cmd(mmc, &cmd, NULL);
1389 if (err)
1390 return err;
1391
1392 cmd.cmdidx = SD_CMD_APP_SD_STATUS;
1393 cmd.resp_type = MMC_RSP_R1;
1394 cmd.cmdarg = 0;
1395
1396retry_ssr:
1397 data.dest = (char *)ssr;
1398 data.blocksize = 64;
1399 data.blocks = 1;
1400 data.flags = MMC_DATA_READ;
1401
1402 err = mmc_send_cmd(mmc, &cmd, &data);
1403 if (err) {
1404 if (timeout--)
1405 goto retry_ssr;
1406
1407 return err;
1408 }
1409
1410 for (i = 0; i < 16; i++)
1411 ssr[i] = be32_to_cpu(ssr[i]);
1412
1413 au = (ssr[2] >> 12) & 0xF;
1414 if ((au <= 9) || (mmc->version == SD_VERSION_3)) {
1415 mmc->ssr.au = sd_au_size[au];
1416 es = (ssr[3] >> 24) & 0xFF;
1417 es |= (ssr[2] & 0xFF) << 8;
1418 et = (ssr[3] >> 18) & 0x3F;
1419 if (es && et) {
1420 eo = (ssr[3] >> 16) & 0x3;
1421 mmc->ssr.erase_timeout = (et * 1000) / es;
1422 mmc->ssr.erase_offset = eo * 1000;
1423 }
1424 } else {
d4d64889 1425 pr_debug("Invalid Allocation Unit Size.\n");
3697e599
PF		 1426 }
1427
1428 return 0;
1429}
5b2e72f3 1430#endif
272cc70b
AF		 1431/* frequency bases */
1432/* divided by 10 to be nice to platforms without floating point */
5f837c2c 1433static const int fbase[] = {
272cc70b
AF		 1434 10000,
1435 100000,
1436 1000000,
1437 10000000,
1438};
1439
1440/* Multiplier values for TRAN_SPEED. Multiplied by 10 to be nice
1441 * to platforms without floating point.
1442 */
61fe076f 1443static const u8 multipliers[] = {
272cc70b
AF		 1444 0, /* reserved */
1445 10,
1446 12,
1447 13,
1448 15,
1449 20,
1450 25,
1451 30,
1452 35,
1453 40,
1454 45,
1455 50,
1456 55,
1457 60,
1458 70,
1459 80,
1460};
1461
d0c221fe
JJH		 1462static inline int bus_width(uint cap)
1463{
1464 if (cap == MMC_MODE_8BIT)
1465 return 8;
1466 if (cap == MMC_MODE_4BIT)
1467 return 4;
1468 if (cap == MMC_MODE_1BIT)
1469 return 1;
d8e3d420 1470 pr_warn("invalid bus witdh capability 0x%x\n", cap);
d0c221fe
JJH		 1471 return 0;
1472}
1473
e7881d85 1474#if !CONFIG_IS_ENABLED(DM_MMC)
f99c2efe 1475#ifdef MMC_SUPPORTS_TUNING
ec841209
KVA		 1476static int mmc_execute_tuning(struct mmc *mmc, uint opcode)
1477{
1478 return -ENOTSUPP;
1479}
f99c2efe 1480#endif
ec841209 1481
318a7a57
JJH		 1482static void mmc_send_init_stream(struct mmc *mmc)
1483{
1484}
1485
2a4d212f 1486static int mmc_set_ios(struct mmc *mmc)
272cc70b 1487{
2a4d212f
KVA		 1488 int ret = 0;
1489
93bfd616 1490 if (mmc->cfg->ops->set_ios)
2a4d212f
KVA		 1491 ret = mmc->cfg->ops->set_ios(mmc);
1492
1493 return ret;
272cc70b 1494}
8ca51e51 1495#endif
272cc70b 1496
35f67820 1497int mmc_set_clock(struct mmc *mmc, uint clock, bool disable)
272cc70b 1498{
c0fafe64 1499 if (!disable) {
9546eb92
JC		 1500 if (clock > mmc->cfg->f_max)
1501 clock = mmc->cfg->f_max;
272cc70b 1502
9546eb92
JC		 1503 if (clock < mmc->cfg->f_min)
1504 clock = mmc->cfg->f_min;
1505 }
272cc70b
AF		 1506
1507 mmc->clock = clock;
35f67820 1508 mmc->clk_disable = disable;
272cc70b 1509
2a4d212f 1510 return mmc_set_ios(mmc);
272cc70b
AF		 1511}
1512
2a4d212f 1513static int mmc_set_bus_width(struct mmc *mmc, uint width)
272cc70b
AF		 1514{
1515 mmc->bus_width = width;
1516
2a4d212f 1517 return mmc_set_ios(mmc);
272cc70b
AF		 1518}
1519
4c9d2aaa
JJH		 1520#if CONFIG_IS_ENABLED(MMC_VERBOSE) || defined(DEBUG)
1521/*
1522 * helper function to display the capabilities in a human
1523 * friendly manner. The capabilities include bus width and
1524 * supported modes.
1525 */
1526void mmc_dump_capabilities(const char *text, uint caps)
1527{
1528 enum bus_mode mode;
1529
d4d64889 1530 pr_debug("%s: widths [", text);
4c9d2aaa 1531 if (caps & MMC_MODE_8BIT)
d4d64889 1532 pr_debug("8, ");
4c9d2aaa 1533 if (caps & MMC_MODE_4BIT)
d4d64889 1534 pr_debug("4, ");
d0c221fe 1535 if (caps & MMC_MODE_1BIT)
d4d64889
MY		 1536 pr_debug("1, ");
1537 pr_debug("\b\b] modes [");
4c9d2aaa
JJH		 1538 for (mode = MMC_LEGACY; mode < MMC_MODES_END; mode++)
1539 if (MMC_CAP(mode) & caps)
d4d64889
MY		 1540 pr_debug("%s, ", mmc_mode_name(mode));
1541 pr_debug("\b\b]\n");
4c9d2aaa
JJH		 1542}
1543#endif
1544
d0c221fe
JJH		 1545struct mode_width_tuning {
1546 enum bus_mode mode;
1547 uint widths;
f99c2efe 1548#ifdef MMC_SUPPORTS_TUNING
634d4849 1549 uint tuning;
f99c2efe 1550#endif
d0c221fe
JJH		 1551};
1552
f99c2efe 1553#if CONFIG_IS_ENABLED(MMC_IO_VOLTAGE)
bc1e3272
JJH		 1554int mmc_voltage_to_mv(enum mmc_voltage voltage)
1555{
1556 switch (voltage) {
1557 case MMC_SIGNAL_VOLTAGE_000: return 0;
1558 case MMC_SIGNAL_VOLTAGE_330: return 3300;
1559 case MMC_SIGNAL_VOLTAGE_180: return 1800;
1560 case MMC_SIGNAL_VOLTAGE_120: return 1200;
1561 }
1562 return -EINVAL;
1563}
1564
aff5d3c8
KVA		 1565static int mmc_set_signal_voltage(struct mmc *mmc, uint signal_voltage)
1566{
bc1e3272
JJH		 1567 int err;
1568
1569 if (mmc->signal_voltage == signal_voltage)
1570 return 0;
1571
aff5d3c8 1572 mmc->signal_voltage = signal_voltage;
bc1e3272
JJH		 1573 err = mmc_set_ios(mmc);
1574 if (err)
d4d64889 1575 pr_debug("unable to set voltage (err %d)\n", err);
bc1e3272
JJH		 1576
1577 return err;
aff5d3c8 1578}
f99c2efe
JJH		 1579#else
1580static inline int mmc_set_signal_voltage(struct mmc *mmc, uint signal_voltage)
1581{
1582 return 0;
1583}
1584#endif
aff5d3c8 1585
d0c221fe 1586static const struct mode_width_tuning sd_modes_by_pref[] = {
f99c2efe
JJH		 1587#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
1588#ifdef MMC_SUPPORTS_TUNING
c10b85d6
JJH		 1589 {
1590 .mode = UHS_SDR104,
1591 .widths = MMC_MODE_4BIT | MMC_MODE_1BIT,
1592 .tuning = MMC_CMD_SEND_TUNING_BLOCK
1593 },
f99c2efe 1594#endif
c10b85d6
JJH		 1595 {
1596 .mode = UHS_SDR50,
1597 .widths = MMC_MODE_4BIT | MMC_MODE_1BIT,
1598 },
1599 {
1600 .mode = UHS_DDR50,
1601 .widths = MMC_MODE_4BIT | MMC_MODE_1BIT,
1602 },
1603 {
1604 .mode = UHS_SDR25,
1605 .widths = MMC_MODE_4BIT | MMC_MODE_1BIT,
1606 },
f99c2efe 1607#endif
d0c221fe
JJH		 1608 {
1609 .mode = SD_HS,
1610 .widths = MMC_MODE_4BIT | MMC_MODE_1BIT,
1611 },
f99c2efe 1612#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
c10b85d6
JJH		 1613 {
1614 .mode = UHS_SDR12,
1615 .widths = MMC_MODE_4BIT | MMC_MODE_1BIT,
1616 },
f99c2efe 1617#endif
d0c221fe
JJH		 1618 {
1619 .mode = SD_LEGACY,
1620 .widths = MMC_MODE_4BIT | MMC_MODE_1BIT,
1621 }
1622};
1623
1624#define for_each_sd_mode_by_pref(caps, mwt) \
1625 for (mwt = sd_modes_by_pref;\
1626 mwt < sd_modes_by_pref + ARRAY_SIZE(sd_modes_by_pref);\
1627 mwt++) \
1628 if (caps & MMC_CAP(mwt->mode))
1629
01298da3 1630static int sd_select_mode_and_width(struct mmc *mmc, uint card_caps)
8ac8a263
JJH		 1631{
1632 int err;
d0c221fe
JJH		 1633 uint widths[] = {MMC_MODE_4BIT, MMC_MODE_1BIT};
1634 const struct mode_width_tuning *mwt;
f99c2efe 1635#if CONFIG_IS_ENABLED(MMC_UHS_SUPPORT)
c10b85d6 1636 bool uhs_en = (mmc->ocr & OCR_S18R) ? true : false;
f99c2efe
JJH		 1637#else
1638 bool uhs_en = false;
1639#endif
c10b85d6
JJH		 1640 uint caps;
1641
52d241df
JJH		 1642#ifdef DEBUG
1643 mmc_dump_capabilities("sd card", card_caps);
1da8eb59 1644 mmc_dump_capabilities("host", mmc->host_caps);
52d241df 1645#endif
8ac8a263 1646
8ac8a263 1647 /* Restrict card's capabilities by what the host can do */
1da8eb59 1648 caps = card_caps & mmc->host_caps;
d0c221fe 1649
c10b85d6
JJH		 1650 if (!uhs_en)
1651 caps &= ~UHS_CAPS;
1652
1653 for_each_sd_mode_by_pref(caps, mwt) {
d0c221fe
JJH		 1654 uint *w;
1655
1656 for (w = widths; w < widths + ARRAY_SIZE(widths); w++) {
c10b85d6 1657 if (*w & caps & mwt->widths) {
d4d64889
MY		 1658 pr_debug("trying mode %s width %d (at %d MHz)\n",
1659 mmc_mode_name(mwt->mode),
1660 bus_width(*w),
1661 mmc_mode2freq(mmc, mwt->mode) / 1000000);
d0c221fe
JJH		 1662
1663 /* configure the bus width (card + host) */
1664 err = sd_select_bus_width(mmc, bus_width(*w));
1665 if (err)
1666 goto error;
1667 mmc_set_bus_width(mmc, bus_width(*w));
1668
1669 /* configure the bus mode (card) */
1670 err = sd_set_card_speed(mmc, mwt->mode);
1671 if (err)
1672 goto error;
1673
1674 /* configure the bus mode (host) */
1675 mmc_select_mode(mmc, mwt->mode);
35f67820 1676 mmc_set_clock(mmc, mmc->tran_speed, false);
d0c221fe 1677
f99c2efe 1678#ifdef MMC_SUPPORTS_TUNING
c10b85d6
JJH		 1679 /* execute tuning if needed */
1680 if (mwt->tuning && !mmc_host_is_spi(mmc)) {
1681 err = mmc_execute_tuning(mmc,
1682 mwt->tuning);
1683 if (err) {
d4d64889 1684 pr_debug("tuning failed\n");
c10b85d6
JJH		 1685 goto error;
1686 }
1687 }
f99c2efe 1688#endif
c10b85d6 1689
5b2e72f3 1690#if CONFIG_IS_ENABLED(MMC_WRITE)
d0c221fe 1691 err = sd_read_ssr(mmc);
5b2e72f3
JJH		 1692 if (!err)
1693 pr_warn("unable to read ssr\n");
1694#endif
d0c221fe
JJH		 1695 if (!err)
1696 return 0;
1697
d0c221fe
JJH		 1698error:
1699 /* revert to a safer bus speed */
1700 mmc_select_mode(mmc, SD_LEGACY);
35f67820 1701 mmc_set_clock(mmc, mmc->tran_speed, false);
d0c221fe
JJH		 1702 }
1703 }
8ac8a263
JJH		 1704 }
1705
d4d64889 1706 pr_err("unable to select a mode\n");
d0c221fe 1707 return -ENOTSUPP;
8ac8a263
JJH		 1708}
1709
7382e691
JJH		 1710/*
1711 * read the compare the part of ext csd that is constant.
1712 * This can be used to check that the transfer is working
1713 * as expected.
1714 */
1715static int mmc_read_and_compare_ext_csd(struct mmc *mmc)
8ac8a263 1716{
7382e691 1717 int err;
dfda9d88 1718 const u8 *ext_csd = mmc->ext_csd;
7382e691
JJH		 1719 ALLOC_CACHE_ALIGN_BUFFER(u8, test_csd, MMC_MAX_BLOCK_LEN);
1720
1de06b9f
JJH		 1721 if (mmc->version < MMC_VERSION_4)
1722 return 0;
1723
7382e691
JJH		 1724 err = mmc_send_ext_csd(mmc, test_csd);
1725 if (err)
1726 return err;
1727
1728 /* Only compare read only fields */
1729 if (ext_csd[EXT_CSD_PARTITIONING_SUPPORT]
1730 == test_csd[EXT_CSD_PARTITIONING_SUPPORT] &&
1731 ext_csd[EXT_CSD_HC_WP_GRP_SIZE]
1732 == test_csd[EXT_CSD_HC_WP_GRP_SIZE] &&
1733 ext_csd[EXT_CSD_REV]
1734 == test_csd[EXT_CSD_REV] &&
1735 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
1736 == test_csd[EXT_CSD_HC_ERASE_GRP_SIZE] &&
1737 memcmp(&ext_csd[EXT_CSD_SEC_CNT],
1738 &test_csd[EXT_CSD_SEC_CNT], 4) == 0)
1739 return 0;
1740
1741 return -EBADMSG;
1742}
1743
f99c2efe 1744#if CONFIG_IS_ENABLED(MMC_IO_VOLTAGE)
bc1e3272
JJH		 1745static int mmc_set_lowest_voltage(struct mmc *mmc, enum bus_mode mode,
1746 uint32_t allowed_mask)
1747{
1748 u32 card_mask = 0;
1749
1750 switch (mode) {
1751 case MMC_HS_200:
1752 if (mmc->cardtype & EXT_CSD_CARD_TYPE_HS200_1_8V)
1753 card_mask |= MMC_SIGNAL_VOLTAGE_180;
1754 if (mmc->cardtype & EXT_CSD_CARD_TYPE_HS200_1_2V)
1755 card_mask |= MMC_SIGNAL_VOLTAGE_120;
1756 break;
1757 case MMC_DDR_52:
1758 if (mmc->cardtype & EXT_CSD_CARD_TYPE_DDR_1_8V)
1759 card_mask |= MMC_SIGNAL_VOLTAGE_330 |
1760 MMC_SIGNAL_VOLTAGE_180;
1761 if (mmc->cardtype & EXT_CSD_CARD_TYPE_DDR_1_2V)
1762 card_mask |= MMC_SIGNAL_VOLTAGE_120;
1763 break;
1764 default:
1765 card_mask |= MMC_SIGNAL_VOLTAGE_330;
1766 break;
1767 }
1768
1769 while (card_mask & allowed_mask) {
1770 enum mmc_voltage best_match;
1771
1772 best_match = 1 << (ffs(card_mask & allowed_mask) - 1);
1773 if (!mmc_set_signal_voltage(mmc, best_match))
1774 return 0;
1775
1776 allowed_mask &= ~best_match;
1777 }
1778
1779 return -ENOTSUPP;
1780}
f99c2efe
JJH		 1781#else
1782static inline int mmc_set_lowest_voltage(struct mmc *mmc, enum bus_mode mode,
1783 uint32_t allowed_mask)
1784{
1785 return 0;
1786}
1787#endif
bc1e3272 1788
3862b854 1789static const struct mode_width_tuning mmc_modes_by_pref[] = {
f99c2efe 1790#if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT)
3862b854
JJH		 1791 {
1792 .mode = MMC_HS_200,
1793 .widths = MMC_MODE_8BIT | MMC_MODE_4BIT,
634d4849 1794 .tuning = MMC_CMD_SEND_TUNING_BLOCK_HS200
3862b854 1795 },
f99c2efe 1796#endif
3862b854
JJH		 1797 {
1798 .mode = MMC_DDR_52,
1799 .widths = MMC_MODE_8BIT | MMC_MODE_4BIT,
1800 },
1801 {
1802 .mode = MMC_HS_52,
1803 .widths = MMC_MODE_8BIT | MMC_MODE_4BIT | MMC_MODE_1BIT,
1804 },
1805 {
1806 .mode = MMC_HS,
1807 .widths = MMC_MODE_8BIT | MMC_MODE_4BIT | MMC_MODE_1BIT,
1808 },
1809 {
1810 .mode = MMC_LEGACY,
1811 .widths = MMC_MODE_8BIT | MMC_MODE_4BIT | MMC_MODE_1BIT,
1812 }
1813};
1814
1815#define for_each_mmc_mode_by_pref(caps, mwt) \
1816 for (mwt = mmc_modes_by_pref;\
1817 mwt < mmc_modes_by_pref + ARRAY_SIZE(mmc_modes_by_pref);\
1818 mwt++) \
1819 if (caps & MMC_CAP(mwt->mode))
1820
1821static const struct ext_csd_bus_width {
1822 uint cap;
1823 bool is_ddr;
1824 uint ext_csd_bits;
1825} ext_csd_bus_width[] = {
1826 {MMC_MODE_8BIT, true, EXT_CSD_DDR_BUS_WIDTH_8},
1827 {MMC_MODE_4BIT, true, EXT_CSD_DDR_BUS_WIDTH_4},
1828 {MMC_MODE_8BIT, false, EXT_CSD_BUS_WIDTH_8},
1829 {MMC_MODE_4BIT, false, EXT_CSD_BUS_WIDTH_4},
1830 {MMC_MODE_1BIT, false, EXT_CSD_BUS_WIDTH_1},
1831};
1832
1833#define for_each_supported_width(caps, ddr, ecbv) \
1834 for (ecbv = ext_csd_bus_width;\
1835 ecbv < ext_csd_bus_width + ARRAY_SIZE(ext_csd_bus_width);\
1836 ecbv++) \
1837 if ((ddr == ecbv->is_ddr) && (caps & ecbv->cap))
1838
01298da3 1839static int mmc_select_mode_and_width(struct mmc *mmc, uint card_caps)
7382e691 1840{
8ac8a263 1841 int err;
3862b854
JJH		 1842 const struct mode_width_tuning *mwt;
1843 const struct ext_csd_bus_width *ecbw;
8ac8a263 1844
52d241df
JJH		 1845#ifdef DEBUG
1846 mmc_dump_capabilities("mmc", card_caps);
1da8eb59 1847 mmc_dump_capabilities("host", mmc->host_caps);
52d241df
JJH		 1848#endif
1849
8ac8a263 1850 /* Restrict card's capabilities by what the host can do */
1da8eb59 1851 card_caps &= mmc->host_caps;
8ac8a263
JJH		 1852
1853 /* Only version 4 of MMC supports wider bus widths */
1854 if (mmc->version < MMC_VERSION_4)
1855 return 0;
1856
dfda9d88 1857 if (!mmc->ext_csd) {
d4d64889 1858 pr_debug("No ext_csd found!\n"); /* this should enver happen */
dfda9d88
JJH		 1859 return -ENOTSUPP;
1860 }
1861
01298da3
JJH		 1862 mmc_set_clock(mmc, mmc->legacy_speed, false);
1863
1864 for_each_mmc_mode_by_pref(card_caps, mwt) {
1865 for_each_supported_width(card_caps & mwt->widths,
3862b854 1866 mmc_is_mode_ddr(mwt->mode), ecbw) {
bc1e3272 1867 enum mmc_voltage old_voltage;
d4d64889
MY		 1868 pr_debug("trying mode %s width %d (at %d MHz)\n",
1869 mmc_mode_name(mwt->mode),
1870 bus_width(ecbw->cap),
1871 mmc_mode2freq(mmc, mwt->mode) / 1000000);
bc1e3272
JJH		 1872 old_voltage = mmc->signal_voltage;
1873 err = mmc_set_lowest_voltage(mmc, mwt->mode,
1874 MMC_ALL_SIGNAL_VOLTAGE);
1875 if (err)
1876 continue;
1877
3862b854
JJH		 1878 /* configure the bus width (card + host) */
1879 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1880 EXT_CSD_BUS_WIDTH,
1881 ecbw->ext_csd_bits & ~EXT_CSD_DDR_FLAG);
1882 if (err)
1883 goto error;
1884 mmc_set_bus_width(mmc, bus_width(ecbw->cap));
8ac8a263 1885
3862b854
JJH		 1886 /* configure the bus speed (card) */
1887 err = mmc_set_card_speed(mmc, mwt->mode);
1888 if (err)
1889 goto error;
1890
1891 /*
1892 * configure the bus width AND the ddr mode (card)
1893 * The host side will be taken care of in the next step
1894 */
1895 if (ecbw->ext_csd_bits & EXT_CSD_DDR_FLAG) {
1896 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1897 EXT_CSD_BUS_WIDTH,
1898 ecbw->ext_csd_bits);
1899 if (err)
1900 goto error;
1901 }
8ac8a263 1902
3862b854
JJH		 1903 /* configure the bus mode (host) */
1904 mmc_select_mode(mmc, mwt->mode);
35f67820 1905 mmc_set_clock(mmc, mmc->tran_speed, false);
f99c2efe 1906#ifdef MMC_SUPPORTS_TUNING
8ac8a263 1907
634d4849
KVA		 1908 /* execute tuning if needed */
1909 if (mwt->tuning) {
1910 err = mmc_execute_tuning(mmc, mwt->tuning);
1911 if (err) {
d4d64889 1912 pr_debug("tuning failed\n");
634d4849
KVA		 1913 goto error;
1914 }
1915 }
f99c2efe 1916#endif
634d4849 1917
3862b854
JJH		 1918 /* do a transfer to check the configuration */
1919 err = mmc_read_and_compare_ext_csd(mmc);
1920 if (!err)
1921 return 0;
1922error:
bc1e3272 1923 mmc_set_signal_voltage(mmc, old_voltage);
3862b854
JJH		 1924 /* if an error occured, revert to a safer bus mode */
1925 mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
1926 EXT_CSD_BUS_WIDTH, EXT_CSD_BUS_WIDTH_1);
1927 mmc_select_mode(mmc, MMC_LEGACY);
1928 mmc_set_bus_width(mmc, 1);
1929 }
8ac8a263
JJH		 1930 }
1931
d8e3d420 1932 pr_err("unable to select a mode\n");
8ac8a263 1933
3862b854 1934 return -ENOTSUPP;
8ac8a263
JJH		 1935}
1936
dfda9d88 1937static int mmc_startup_v4(struct mmc *mmc)
c744b6f6
JJH		 1938{
1939 int err, i;
1940 u64 capacity;
1941 bool has_parts = false;
1942 bool part_completed;
58a6fb7b
JJH		 1943 static const u32 mmc_versions[] = {
1944 MMC_VERSION_4,
1945 MMC_VERSION_4_1,
1946 MMC_VERSION_4_2,
1947 MMC_VERSION_4_3,
ace1bed3 1948 MMC_VERSION_4_4,
58a6fb7b
JJH		 1949 MMC_VERSION_4_41,
1950 MMC_VERSION_4_5,
1951 MMC_VERSION_5_0,
1952 MMC_VERSION_5_1
1953 };
1954
f7d5dffc 1955 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
c744b6f6
JJH		 1956
1957 if (IS_SD(mmc) || (mmc->version < MMC_VERSION_4))
1958 return 0;
1959
1960 /* check ext_csd version and capacity */
1961 err = mmc_send_ext_csd(mmc, ext_csd);
1962 if (err)
f7d5dffc
JJH		 1963 goto error;
1964
1965 /* store the ext csd for future reference */
1966 if (!mmc->ext_csd)
1967 mmc->ext_csd = malloc(MMC_MAX_BLOCK_LEN);
1968 if (!mmc->ext_csd)
1969 return -ENOMEM;
1970 memcpy(mmc->ext_csd, ext_csd, MMC_MAX_BLOCK_LEN);
1971
58a6fb7b
JJH		 1972 if (ext_csd[EXT_CSD_REV] > ARRAY_SIZE(mmc_versions))
1973 return -EINVAL;
1974
1975 mmc->version = mmc_versions[ext_csd[EXT_CSD_REV]];
1976
1977 if (mmc->version >= MMC_VERSION_4_2) {
c744b6f6
JJH		 1978 /*
1979 * According to the JEDEC Standard, the value of
1980 * ext_csd's capacity is valid if the value is more
1981 * than 2GB
1982 */
1983 capacity = ext_csd[EXT_CSD_SEC_CNT] << 0
1984 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8
1985 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16
1986 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
1987 capacity *= MMC_MAX_BLOCK_LEN;
1988 if ((capacity >> 20) > 2 * 1024)
1989 mmc->capacity_user = capacity;
1990 }
1991
c744b6f6
JJH		 1992 /* The partition data may be non-zero but it is only
1993 * effective if PARTITION_SETTING_COMPLETED is set in
1994 * EXT_CSD, so ignore any data if this bit is not set,
1995 * except for enabling the high-capacity group size
1996 * definition (see below).
1997 */
1998 part_completed = !!(ext_csd[EXT_CSD_PARTITION_SETTING] &
1999 EXT_CSD_PARTITION_SETTING_COMPLETED);
2000
2001 /* store the partition info of emmc */
2002 mmc->part_support = ext_csd[EXT_CSD_PARTITIONING_SUPPORT];
2003 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) ||
2004 ext_csd[EXT_CSD_BOOT_MULT])
2005 mmc->part_config = ext_csd[EXT_CSD_PART_CONF];
2006 if (part_completed &&
2007 (ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & ENHNCD_SUPPORT))
2008 mmc->part_attr = ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE];
2009
2010 mmc->capacity_boot = ext_csd[EXT_CSD_BOOT_MULT] << 17;
2011
2012 mmc->capacity_rpmb = ext_csd[EXT_CSD_RPMB_MULT] << 17;
2013
2014 for (i = 0; i < 4; i++) {
2015 int idx = EXT_CSD_GP_SIZE_MULT + i * 3;
2016 uint mult = (ext_csd[idx + 2] << 16) +
2017 (ext_csd[idx + 1] << 8) + ext_csd[idx];
2018 if (mult)
2019 has_parts = true;
2020 if (!part_completed)
2021 continue;
2022 mmc->capacity_gp[i] = mult;
2023 mmc->capacity_gp[i] *=
2024 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
2025 mmc->capacity_gp[i] *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
2026 mmc->capacity_gp[i] <<= 19;
2027 }
2028
173c06df 2029#ifndef CONFIG_SPL_BUILD
c744b6f6
JJH		 2030 if (part_completed) {
2031 mmc->enh_user_size =
2032 (ext_csd[EXT_CSD_ENH_SIZE_MULT + 2] << 16) +
2033 (ext_csd[EXT_CSD_ENH_SIZE_MULT + 1] << 8) +
2034 ext_csd[EXT_CSD_ENH_SIZE_MULT];
2035 mmc->enh_user_size *= ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE];
2036 mmc->enh_user_size *= ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
2037 mmc->enh_user_size <<= 19;
2038 mmc->enh_user_start =
2039 (ext_csd[EXT_CSD_ENH_START_ADDR + 3] << 24) +
2040 (ext_csd[EXT_CSD_ENH_START_ADDR + 2] << 16) +
2041 (ext_csd[EXT_CSD_ENH_START_ADDR + 1] << 8) +
2042 ext_csd[EXT_CSD_ENH_START_ADDR];
2043 if (mmc->high_capacity)
2044 mmc->enh_user_start <<= 9;
2045 }
173c06df 2046#endif
c744b6f6
JJH		 2047
2048 /*
2049 * Host needs to enable ERASE_GRP_DEF bit if device is
2050 * partitioned. This bit will be lost every time after a reset
2051 * or power off. This will affect erase size.
2052 */
2053 if (part_completed)
2054 has_parts = true;
2055 if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) &&
2056 (ext_csd[EXT_CSD_PARTITIONS_ATTRIBUTE] & PART_ENH_ATTRIB))
2057 has_parts = true;
2058 if (has_parts) {
2059 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
2060 EXT_CSD_ERASE_GROUP_DEF, 1);
2061
2062 if (err)
f7d5dffc 2063 goto error;
c744b6f6
JJH		 2064
2065 ext_csd[EXT_CSD_ERASE_GROUP_DEF] = 1;
2066 }
2067
2068 if (ext_csd[EXT_CSD_ERASE_GROUP_DEF] & 0x01) {
e6fa5a54 2069#if CONFIG_IS_ENABLED(MMC_WRITE)
c744b6f6
JJH		 2070 /* Read out group size from ext_csd */
2071 mmc->erase_grp_size =
2072 ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] * 1024;
e6fa5a54 2073#endif
c744b6f6
JJH		 2074 /*
2075 * if high capacity and partition setting completed
2076 * SEC_COUNT is valid even if it is smaller than 2 GiB
2077 * JEDEC Standard JESD84-B45, 6.2.4
2078 */
2079 if (mmc->high_capacity && part_completed) {
2080 capacity = (ext_csd[EXT_CSD_SEC_CNT]) |
2081 (ext_csd[EXT_CSD_SEC_CNT + 1] << 8) |
2082 (ext_csd[EXT_CSD_SEC_CNT + 2] << 16) |
2083 (ext_csd[EXT_CSD_SEC_CNT + 3] << 24);
2084 capacity *= MMC_MAX_BLOCK_LEN;
2085 mmc->capacity_user = capacity;
2086 }
e6fa5a54
JJH		 2087 }
2088#if CONFIG_IS_ENABLED(MMC_WRITE)
2089 else {
c744b6f6
JJH		 2090 /* Calculate the group size from the csd value. */
2091 int erase_gsz, erase_gmul;
2092
2093 erase_gsz = (mmc->csd[2] & 0x00007c00) >> 10;
2094 erase_gmul = (mmc->csd[2] & 0x000003e0) >> 5;
2095 mmc->erase_grp_size = (erase_gsz + 1)
2096 * (erase_gmul + 1);
2097 }
e6fa5a54 2098#endif
b7a6e2c9 2099#if CONFIG_IS_ENABLED(MMC_HW_PARTITIONING)
c744b6f6
JJH		 2100 mmc->hc_wp_grp_size = 1024
2101 * ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]
2102 * ext_csd[EXT_CSD_HC_WP_GRP_SIZE];
b7a6e2c9 2103#endif
c744b6f6
JJH		 2104
2105 mmc->wr_rel_set = ext_csd[EXT_CSD_WR_REL_SET];
2106
2107 return 0;
f7d5dffc
JJH		 2108error:
2109 if (mmc->ext_csd) {
2110 free(mmc->ext_csd);
2111 mmc->ext_csd = NULL;
2112 }
2113 return err;
c744b6f6
JJH		 2114}
2115
fdbb873e 2116static int mmc_startup(struct mmc *mmc)
272cc70b 2117{
f866a46d 2118 int err, i;
272cc70b 2119 uint mult, freq;
c744b6f6 2120 u64 cmult, csize;
272cc70b 2121 struct mmc_cmd cmd;
c40fdca6 2122 struct blk_desc *bdesc;
272cc70b 2123
d52ebf10
TC		 2124#ifdef CONFIG_MMC_SPI_CRC_ON
2125 if (mmc_host_is_spi(mmc)) { /* enable CRC check for spi */
2126 cmd.cmdidx = MMC_CMD_SPI_CRC_ON_OFF;
2127 cmd.resp_type = MMC_RSP_R1;
2128 cmd.cmdarg = 1;
d52ebf10 2129 err = mmc_send_cmd(mmc, &cmd, NULL);
d52ebf10
TC		 2130 if (err)
2131 return err;
2132 }
2133#endif
2134
272cc70b 2135 /* Put the Card in Identify Mode */
d52ebf10
TC		 2136 cmd.cmdidx = mmc_host_is_spi(mmc) ? MMC_CMD_SEND_CID :
2137 MMC_CMD_ALL_SEND_CID; /* cmd not supported in spi */
272cc70b
AF		 2138 cmd.resp_type = MMC_RSP_R2;
2139 cmd.cmdarg = 0;
272cc70b
AF		 2140
2141 err = mmc_send_cmd(mmc, &cmd, NULL);
2142
83dc4227
KVA		 2143#ifdef CONFIG_MMC_QUIRKS
2144 if (err && (mmc->quirks & MMC_QUIRK_RETRY_SEND_CID)) {
2145 int retries = 4;
2146 /*
2147 * It has been seen that SEND_CID may fail on the first
2148 * attempt, let's try a few more time
2149 */
2150 do {
2151 err = mmc_send_cmd(mmc, &cmd, NULL);
2152 if (!err)
2153 break;
2154 } while (retries--);
2155 }
2156#endif
2157
272cc70b
AF		 2158 if (err)
2159 return err;
2160
2161 memcpy(mmc->cid, cmd.response, 16);
2162
2163 /*
2164 * For MMC cards, set the Relative Address.
2165 * For SD cards, get the Relatvie Address.
2166 * This also puts the cards into Standby State
2167 */
d52ebf10
TC		 2168 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
2169 cmd.cmdidx = SD_CMD_SEND_RELATIVE_ADDR;
2170 cmd.cmdarg = mmc->rca << 16;
2171 cmd.resp_type = MMC_RSP_R6;
272cc70b 2172
d52ebf10 2173 err = mmc_send_cmd(mmc, &cmd, NULL);
272cc70b 2174
d52ebf10
TC		 2175 if (err)
2176 return err;
272cc70b 2177
d52ebf10
TC		 2178 if (IS_SD(mmc))
2179 mmc->rca = (cmd.response[0] >> 16) & 0xffff;
2180 }
272cc70b
AF		 2181
2182 /* Get the Card-Specific Data */
2183 cmd.cmdidx = MMC_CMD_SEND_CSD;
2184 cmd.resp_type = MMC_RSP_R2;
2185 cmd.cmdarg = mmc->rca << 16;
272cc70b
AF		 2186
2187 err = mmc_send_cmd(mmc, &cmd, NULL);
2188
2189 if (err)
2190 return err;
2191
998be3dd
RV		 2192 mmc->csd[0] = cmd.response[0];
2193 mmc->csd[1] = cmd.response[1];
2194 mmc->csd[2] = cmd.response[2];
2195 mmc->csd[3] = cmd.response[3];
272cc70b
AF		 2196
2197 if (mmc->version == MMC_VERSION_UNKNOWN) {
0b453ffe 2198 int version = (cmd.response[0] >> 26) & 0xf;
272cc70b
AF		 2199
2200 switch (version) {
53e8e40b
BM		 2201 case 0:
2202 mmc->version = MMC_VERSION_1_2;
2203 break;
2204 case 1:
2205 mmc->version = MMC_VERSION_1_4;
2206 break;
2207 case 2:
2208 mmc->version = MMC_VERSION_2_2;
2209 break;
2210 case 3:
2211 mmc->version = MMC_VERSION_3;
2212 break;
2213 case 4:
2214 mmc->version = MMC_VERSION_4;
2215 break;
2216 default:
2217 mmc->version = MMC_VERSION_1_2;
2218 break;
272cc70b
AF		 2219 }
2220 }
2221
2222 /* divide frequency by 10, since the mults are 10x bigger */
0b453ffe
RV		 2223 freq = fbase[(cmd.response[0] & 0x7)];
2224 mult = multipliers[((cmd.response[0] >> 3) & 0xf)];
272cc70b 2225
35f9e196 2226 mmc->legacy_speed = freq * mult;
35f9e196 2227 mmc_select_mode(mmc, MMC_LEGACY);
272cc70b 2228
ab71188c 2229 mmc->dsr_imp = ((cmd.response[1] >> 12) & 0x1);
998be3dd 2230 mmc->read_bl_len = 1 << ((cmd.response[1] >> 16) & 0xf);
e6fa5a54 2231#if CONFIG_IS_ENABLED(MMC_WRITE)
272cc70b
AF		 2232
2233 if (IS_SD(mmc))
2234 mmc->write_bl_len = mmc->read_bl_len;
2235 else
998be3dd 2236 mmc->write_bl_len = 1 << ((cmd.response[3] >> 22) & 0xf);
e6fa5a54 2237#endif
272cc70b
AF		 2238
2239 if (mmc->high_capacity) {
2240 csize = (mmc->csd[1] & 0x3f) << 16
2241 | (mmc->csd[2] & 0xffff0000) >> 16;
2242 cmult = 8;
2243 } else {
2244 csize = (mmc->csd[1] & 0x3ff) << 2
2245 | (mmc->csd[2] & 0xc0000000) >> 30;
2246 cmult = (mmc->csd[2] & 0x00038000) >> 15;
2247 }
2248
f866a46d
SW		 2249 mmc->capacity_user = (csize + 1) << (cmult + 2);
2250 mmc->capacity_user *= mmc->read_bl_len;
2251 mmc->capacity_boot = 0;
2252 mmc->capacity_rpmb = 0;
2253 for (i = 0; i < 4; i++)
2254 mmc->capacity_gp[i] = 0;
272cc70b 2255
8bfa195e
SG		 2256 if (mmc->read_bl_len > MMC_MAX_BLOCK_LEN)
2257 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
272cc70b 2258
e6fa5a54 2259#if CONFIG_IS_ENABLED(MMC_WRITE)
8bfa195e
SG		 2260 if (mmc->write_bl_len > MMC_MAX_BLOCK_LEN)
2261 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
e6fa5a54 2262#endif
272cc70b 2263
ab71188c
MN		 2264 if ((mmc->dsr_imp) && (0xffffffff != mmc->dsr)) {
2265 cmd.cmdidx = MMC_CMD_SET_DSR;
2266 cmd.cmdarg = (mmc->dsr & 0xffff) << 16;
2267 cmd.resp_type = MMC_RSP_NONE;
2268 if (mmc_send_cmd(mmc, &cmd, NULL))
d8e3d420 2269 pr_warn("MMC: SET_DSR failed\n");
ab71188c
MN		 2270 }
2271
272cc70b 2272 /* Select the card, and put it into Transfer Mode */
d52ebf10
TC		 2273 if (!mmc_host_is_spi(mmc)) { /* cmd not supported in spi */
2274 cmd.cmdidx = MMC_CMD_SELECT_CARD;
fe8f7066 2275 cmd.resp_type = MMC_RSP_R1;
d52ebf10 2276 cmd.cmdarg = mmc->rca << 16;
d52ebf10 2277 err = mmc_send_cmd(mmc, &cmd, NULL);
272cc70b 2278
d52ebf10
TC		 2279 if (err)
2280 return err;
2281 }
272cc70b 2282
e6f99a56
LW		 2283 /*
2284 * For SD, its erase group is always one sector
2285 */
e6fa5a54 2286#if CONFIG_IS_ENABLED(MMC_WRITE)
e6f99a56 2287 mmc->erase_grp_size = 1;
e6fa5a54 2288#endif
bc897b1d 2289 mmc->part_config = MMCPART_NOAVAILABLE;
1937e5aa 2290
dfda9d88 2291 err = mmc_startup_v4(mmc);
c744b6f6
JJH		 2292 if (err)
2293 return err;
d23e2c09 2294
c40fdca6 2295 err = mmc_set_capacity(mmc, mmc_get_blk_desc(mmc)->hwpart);
f866a46d
SW		 2296 if (err)
2297 return err;
2298
01298da3
JJH		 2299 if (IS_SD(mmc)) {
2300 err = sd_get_capabilities(mmc);
2301 if (err)
2302 return err;
2303 err = sd_select_mode_and_width(mmc, mmc->card_caps);
2304 } else {
2305 err = mmc_get_capabilities(mmc);
2306 if (err)
2307 return err;
2308 mmc_select_mode_and_width(mmc, mmc->card_caps);
2309 }
272cc70b
AF		 2310
2311 if (err)
2312 return err;
2313
01298da3 2314 mmc->best_mode = mmc->selected_mode;
ad5fd922 2315
5af8f45c
AG		 2316 /* Fix the block length for DDR mode */
2317 if (mmc->ddr_mode) {
2318 mmc->read_bl_len = MMC_MAX_BLOCK_LEN;
e6fa5a54 2319#if CONFIG_IS_ENABLED(MMC_WRITE)
5af8f45c 2320 mmc->write_bl_len = MMC_MAX_BLOCK_LEN;
e6fa5a54 2321#endif
5af8f45c
AG		 2322 }
2323
272cc70b 2324 /* fill in device description */
c40fdca6
SG		 2325 bdesc = mmc_get_blk_desc(mmc);
2326 bdesc->lun = 0;
2327 bdesc->hwpart = 0;
2328 bdesc->type = 0;
2329 bdesc->blksz = mmc->read_bl_len;
2330 bdesc->log2blksz = LOG2(bdesc->blksz);
2331 bdesc->lba = lldiv(mmc->capacity, mmc->read_bl_len);
fc011f64
SS		 2332#if !defined(CONFIG_SPL_BUILD) || \
2333 (defined(CONFIG_SPL_LIBCOMMON_SUPPORT) && \
2334 !defined(CONFIG_USE_TINY_PRINTF))
c40fdca6 2335 sprintf(bdesc->vendor, "Man %06x Snr %04x%04x",
babce5f6
TH		 2336 mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff),
2337 (mmc->cid[3] >> 16) & 0xffff);
c40fdca6 2338 sprintf(bdesc->product, "%c%c%c%c%c%c", mmc->cid[0] & 0xff,
babce5f6
TH		 2339 (mmc->cid[1] >> 24), (mmc->cid[1] >> 16) & 0xff,
2340 (mmc->cid[1] >> 8) & 0xff, mmc->cid[1] & 0xff,
2341 (mmc->cid[2] >> 24) & 0xff);
c40fdca6 2342 sprintf(bdesc->revision, "%d.%d", (mmc->cid[2] >> 20) & 0xf,
babce5f6 2343 (mmc->cid[2] >> 16) & 0xf);
56196826 2344#else
c40fdca6
SG		 2345 bdesc->vendor[0] = 0;
2346 bdesc->product[0] = 0;
2347 bdesc->revision[0] = 0;
56196826 2348#endif
122efd43 2349#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBDISK_SUPPORT)
c40fdca6 2350 part_init(bdesc);
122efd43 2351#endif
272cc70b
AF		 2352
2353 return 0;
2354}
2355
fdbb873e 2356static int mmc_send_if_cond(struct mmc *mmc)
272cc70b
AF		 2357{
2358 struct mmc_cmd cmd;
2359 int err;
2360
2361 cmd.cmdidx = SD_CMD_SEND_IF_COND;
2362 /* We set the bit if the host supports voltages between 2.7 and 3.6 V */
93bfd616 2363 cmd.cmdarg = ((mmc->cfg->voltages & 0xff8000) != 0) << 8 | 0xaa;
272cc70b 2364 cmd.resp_type = MMC_RSP_R7;
272cc70b
AF		 2365
2366 err = mmc_send_cmd(mmc, &cmd, NULL);
2367
2368 if (err)
2369 return err;
2370
998be3dd 2371 if ((cmd.response[0] & 0xff) != 0xaa)
915ffa52 2372 return -EOPNOTSUPP;
272cc70b
AF		 2373 else
2374 mmc->version = SD_VERSION_2;
2375
2376 return 0;
2377}
2378
c4d660d4 2379#if !CONFIG_IS_ENABLED(DM_MMC)
95de9ab2
PK		 2380/* board-specific MMC power initializations. */
2381__weak void board_mmc_power_init(void)
2382{
2383}
05cbeb7c 2384#endif
95de9ab2 2385
2051aefe
PF		 2386static int mmc_power_init(struct mmc *mmc)
2387{
c4d660d4 2388#if CONFIG_IS_ENABLED(DM_MMC)
06ec045f 2389#if CONFIG_IS_ENABLED(DM_REGULATOR)
2051aefe
PF		 2390 int ret;
2391
2392 ret = device_get_supply_regulator(mmc->dev, "vmmc-supply",
06ec045f
JJH		 2393 &mmc->vmmc_supply);
2394 if (ret)
d4d64889 2395 pr_debug("%s: No vmmc supply\n", mmc->dev->name);
2051aefe 2396
06ec045f
JJH		 2397 ret = device_get_supply_regulator(mmc->dev, "vqmmc-supply",
2398 &mmc->vqmmc_supply);
2399 if (ret)
d4d64889 2400 pr_debug("%s: No vqmmc supply\n", mmc->dev->name);
fb7c3beb
KVA		 2401#endif
2402#else /* !CONFIG_DM_MMC */
2403 /*
2404 * Driver model should use a regulator, as above, rather than calling
2405 * out to board code.
2406 */
2407 board_mmc_power_init();
2408#endif
2409 return 0;
2410}
2411
2412/*
2413 * put the host in the initial state:
2414 * - turn on Vdd (card power supply)
2415 * - configure the bus width and clock to minimal values
2416 */
2417static void mmc_set_initial_state(struct mmc *mmc)
2418{
2419 int err;
2420
2421 /* First try to set 3.3V. If it fails set to 1.8V */
2422 err = mmc_set_signal_voltage(mmc, MMC_SIGNAL_VOLTAGE_330);
2423 if (err != 0)
2424 err = mmc_set_signal_voltage(mmc, MMC_SIGNAL_VOLTAGE_180);
2425 if (err != 0)
d8e3d420 2426 pr_warn("mmc: failed to set signal voltage\n");
fb7c3beb
KVA		 2427
2428 mmc_select_mode(mmc, MMC_LEGACY);
2429 mmc_set_bus_width(mmc, 1);
35f67820 2430 mmc_set_clock(mmc, 0, false);
fb7c3beb 2431}
06ec045f 2432
fb7c3beb
KVA		 2433static int mmc_power_on(struct mmc *mmc)
2434{
2435#if CONFIG_IS_ENABLED(DM_MMC) && CONFIG_IS_ENABLED(DM_REGULATOR)
06ec045f 2436 if (mmc->vmmc_supply) {
fb7c3beb
KVA		 2437 int ret = regulator_set_enable(mmc->vmmc_supply, true);
2438
06ec045f
JJH		 2439 if (ret) {
2440 puts("Error enabling VMMC supply\n");
2441 return ret;
2442 }
2051aefe 2443 }
05cbeb7c 2444#endif
fb7c3beb
KVA		 2445 return 0;
2446}
2447
2448static int mmc_power_off(struct mmc *mmc)
2449{
9546eb92 2450 mmc_set_clock(mmc, 0, true);
fb7c3beb
KVA		 2451#if CONFIG_IS_ENABLED(DM_MMC) && CONFIG_IS_ENABLED(DM_REGULATOR)
2452 if (mmc->vmmc_supply) {
2453 int ret = regulator_set_enable(mmc->vmmc_supply, false);
2454
2455 if (ret) {
d4d64889 2456 pr_debug("Error disabling VMMC supply\n");
fb7c3beb
KVA		 2457 return ret;
2458 }
2459 }
2051aefe
PF		 2460#endif
2461 return 0;
2462}
2463
fb7c3beb
KVA		 2464static int mmc_power_cycle(struct mmc *mmc)
2465{
2466 int ret;
2467
2468 ret = mmc_power_off(mmc);
2469 if (ret)
2470 return ret;
2471 /*
2472 * SD spec recommends at least 1ms of delay. Let's wait for 2ms
2473 * to be on the safer side.
2474 */
2475 udelay(2000);
2476 return mmc_power_on(mmc);
2477}
2478
e9550449 2479int mmc_start_init(struct mmc *mmc)
272cc70b 2480{
8ca51e51 2481 bool no_card;
c10b85d6 2482 bool uhs_en = supports_uhs(mmc->cfg->host_caps);
afd5932b 2483 int err;
272cc70b 2484
1da8eb59
JJH		 2485 /*
2486 * all hosts are capable of 1 bit bus-width and able to use the legacy
2487 * timings.
2488 */
2489 mmc->host_caps = mmc->cfg->host_caps | MMC_CAP(SD_LEGACY) |
2490 MMC_CAP(MMC_LEGACY) | MMC_MODE_1BIT;
04a2ea24 2491
2f516e4a 2492#if !defined(CONFIG_MMC_BROKEN_CD)
ab769f22 2493 /* we pretend there's no card when init is NULL */
8ca51e51 2494 no_card = mmc_getcd(mmc) == 0;
2f516e4a
JN		 2495#else
2496 no_card = 0;
2497#endif
e7881d85 2498#if !CONFIG_IS_ENABLED(DM_MMC)
8ca51e51
SG		 2499 no_card = no_card || (mmc->cfg->ops->init == NULL);
2500#endif
2501 if (no_card) {
48972d90 2502 mmc->has_init = 0;
56196826 2503#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
d4d64889 2504 pr_err("MMC: no card present\n");
56196826 2505#endif
915ffa52 2506 return -ENOMEDIUM;
48972d90
TR		 2507 }
2508
bc897b1d
LW		 2509 if (mmc->has_init)
2510 return 0;
2511
5a8dbdc6
YL		 2512#ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
2513 mmc_adapter_card_type_ident();
2514#endif
2051aefe
PF		 2515 err = mmc_power_init(mmc);
2516 if (err)
2517 return err;
95de9ab2 2518
83dc4227
KVA		 2519#ifdef CONFIG_MMC_QUIRKS
2520 mmc->quirks = MMC_QUIRK_RETRY_SET_BLOCKLEN |
2521 MMC_QUIRK_RETRY_SEND_CID;
2522#endif
2523
04a2ea24
JJH		 2524 err = mmc_power_cycle(mmc);
2525 if (err) {
2526 /*
2527 * if power cycling is not supported, we should not try
2528 * to use the UHS modes, because we wouldn't be able to
2529 * recover from an error during the UHS initialization.
2530 */
d4d64889 2531 pr_debug("Unable to do a full power cycle. Disabling the UHS modes for safety\n");
04a2ea24
JJH		 2532 uhs_en = false;
2533 mmc->host_caps &= ~UHS_CAPS;
2534 err = mmc_power_on(mmc);
2535 }
fb7c3beb
KVA		 2536 if (err)
2537 return err;
2538
e7881d85 2539#if CONFIG_IS_ENABLED(DM_MMC)
8ca51e51
SG		 2540 /* The device has already been probed ready for use */
2541#else
ab769f22 2542 /* made sure it's not NULL earlier */
93bfd616 2543 err = mmc->cfg->ops->init(mmc);
272cc70b
AF		 2544 if (err)
2545 return err;
8ca51e51 2546#endif
786e8f81 2547 mmc->ddr_mode = 0;
aff5d3c8 2548
c10b85d6 2549retry:
fb7c3beb 2550 mmc_set_initial_state(mmc);
318a7a57
JJH		 2551 mmc_send_init_stream(mmc);
2552
272cc70b
AF		 2553 /* Reset the Card */
2554 err = mmc_go_idle(mmc);
2555
2556 if (err)
2557 return err;
2558
bc897b1d 2559 /* The internal partition reset to user partition(0) at every CMD0*/
c40fdca6 2560 mmc_get_blk_desc(mmc)->hwpart = 0;
bc897b1d 2561
272cc70b 2562 /* Test for SD version 2 */
afd5932b 2563 err = mmc_send_if_cond(mmc);
272cc70b 2564
272cc70b 2565 /* Now try to get the SD card's operating condition */
c10b85d6
JJH		 2566 err = sd_send_op_cond(mmc, uhs_en);
2567 if (err && uhs_en) {
2568 uhs_en = false;
2569 mmc_power_cycle(mmc);
2570 goto retry;
2571 }
272cc70b
AF		 2572
2573 /* If the command timed out, we check for an MMC card */
915ffa52 2574 if (err == -ETIMEDOUT) {
272cc70b
AF		 2575 err = mmc_send_op_cond(mmc);
2576
bd47c135 2577 if (err) {
56196826 2578#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
d8e3d420 2579 pr_err("Card did not respond to voltage select!\n");
56196826 2580#endif
915ffa52 2581 return -EOPNOTSUPP;
272cc70b
AF		 2582 }
2583 }
2584
bd47c135 2585 if (!err)
e9550449
CLC		 2586 mmc->init_in_progress = 1;
2587
2588 return err;
2589}
2590
2591static int mmc_complete_init(struct mmc *mmc)
2592{
2593 int err = 0;
2594
bd47c135 2595 mmc->init_in_progress = 0;
e9550449
CLC		 2596 if (mmc->op_cond_pending)
2597 err = mmc_complete_op_cond(mmc);
2598
2599 if (!err)
2600 err = mmc_startup(mmc);
bc897b1d
LW		 2601 if (err)
2602 mmc->has_init = 0;
2603 else
2604 mmc->has_init = 1;
e9550449
CLC		 2605 return err;
2606}
2607
2608int mmc_init(struct mmc *mmc)
2609{
bd47c135 2610 int err = 0;
ce9eca94 2611 __maybe_unused unsigned start;
c4d660d4 2612#if CONFIG_IS_ENABLED(DM_MMC)
33fb211d 2613 struct mmc_uclass_priv *upriv = dev_get_uclass_priv(mmc->dev);
e9550449 2614
33fb211d
SG		 2615 upriv->mmc = mmc;
2616#endif
e9550449
CLC		 2617 if (mmc->has_init)
2618 return 0;
d803fea5
MZ		 2619
2620 start = get_timer(0);
2621
e9550449
CLC		 2622 if (!mmc->init_in_progress)
2623 err = mmc_start_init(mmc);
2624
bd47c135 2625 if (!err)
e9550449 2626 err = mmc_complete_init(mmc);
919b4858 2627 if (err)
d4d64889 2628 pr_info("%s: %d, time %lu\n", __func__, err, get_timer(start));
919b4858 2629
bc897b1d 2630 return err;
272cc70b
AF		 2631}
2632
ab71188c
MN		 2633int mmc_set_dsr(struct mmc *mmc, u16 val)
2634{
2635 mmc->dsr = val;
2636 return 0;
2637}
2638
cee9ab7c
JH		 2639/* CPU-specific MMC initializations */
2640__weak int cpu_mmc_init(bd_t *bis)
272cc70b
AF		 2641{
2642 return -1;
2643}
2644
cee9ab7c
JH		 2645/* board-specific MMC initializations. */
2646__weak int board_mmc_init(bd_t *bis)
2647{
2648 return -1;
2649}
272cc70b 2650
e9550449
CLC		 2651void mmc_set_preinit(struct mmc *mmc, int preinit)
2652{
2653 mmc->preinit = preinit;
2654}
2655
8a856db2 2656#if CONFIG_IS_ENABLED(DM_MMC)
8e3332e2
SS		 2657static int mmc_probe(bd_t *bis)
2658{
4a1db6d8 2659 int ret, i;
8e3332e2 2660 struct uclass *uc;
4a1db6d8 2661 struct udevice *dev;
8e3332e2
SS		 2662
2663 ret = uclass_get(UCLASS_MMC, &uc);
2664 if (ret)
2665 return ret;
2666
4a1db6d8
SG		 2667 /*
2668 * Try to add them in sequence order. Really with driver model we
2669 * should allow holes, but the current MMC list does not allow that.
2670 * So if we request 0, 1, 3 we will get 0, 1, 2.
2671 */
2672 for (i = 0; ; i++) {
2673 ret = uclass_get_device_by_seq(UCLASS_MMC, i, &dev);
2674 if (ret == -ENODEV)
2675 break;
2676 }
2677 uclass_foreach_dev(dev, uc) {
2678 ret = device_probe(dev);
8e3332e2 2679 if (ret)
d8e3d420 2680 pr_err("%s - probe failed: %d\n", dev->name, ret);
8e3332e2
SS		 2681 }
2682
2683 return 0;
2684}
2685#else
2686static int mmc_probe(bd_t *bis)
2687{
2688 if (board_mmc_init(bis) < 0)
2689 cpu_mmc_init(bis);
2690
2691 return 0;
2692}
2693#endif
e9550449 2694
272cc70b
AF		 2695int mmc_initialize(bd_t *bis)
2696{
1b26bab1 2697 static int initialized = 0;
8e3332e2 2698 int ret;
1b26bab1
DK		 2699 if (initialized) /* Avoid initializing mmc multiple times */
2700 return 0;
2701 initialized = 1;
2702
c4d660d4 2703#if !CONFIG_IS_ENABLED(BLK)
b5b838f1 2704#if !CONFIG_IS_ENABLED(MMC_TINY)
c40fdca6 2705 mmc_list_init();
b5b838f1 2706#endif
c40fdca6 2707#endif
8e3332e2
SS		 2708 ret = mmc_probe(bis);
2709 if (ret)
2710 return ret;
272cc70b 2711
bb0dc108 2712#ifndef CONFIG_SPL_BUILD
272cc70b 2713 print_mmc_devices(',');
bb0dc108 2714#endif
272cc70b 2715
c40fdca6 2716 mmc_do_preinit();
272cc70b
AF		 2717 return 0;
2718}
cd3d4880
TM		 2719
2720#ifdef CONFIG_CMD_BKOPS_ENABLE
2721int mmc_set_bkops_enable(struct mmc *mmc)
2722{
2723 int err;
2724 ALLOC_CACHE_ALIGN_BUFFER(u8, ext_csd, MMC_MAX_BLOCK_LEN);
2725
2726 err = mmc_send_ext_csd(mmc, ext_csd);
2727 if (err) {
2728 puts("Could not get ext_csd register values\n");
2729 return err;
2730 }
2731
2732 if (!(ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1)) {
2733 puts("Background operations not supported on device\n");
2734 return -EMEDIUMTYPE;
2735 }
2736
2737 if (ext_csd[EXT_CSD_BKOPS_EN] & 0x1) {
2738 puts("Background operations already enabled\n");
2739 return 0;
2740 }
2741
2742 err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BKOPS_EN, 1);
2743 if (err) {
2744 puts("Failed to enable manual background operations\n");
2745 return err;
2746 }
2747
2748 puts("Enabled manual background operations\n");
2749
2750 return 0;
2751}
2752#endif
"Das U-Boot" Source Tree