Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1 | /* |
Pierre Ossman | 70f1048 | 2007-07-11 20:04:50 +0200 | [diff] [blame] | 2 | * linux/drivers/mmc/core/sd.c |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 2003-2004 Russell King, All Rights Reserved. |
| 5 | * SD support Copyright (C) 2004 Ian Molton, All Rights Reserved. |
| 6 | * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/err.h> |
Wolfram Sang | 9288cac | 2013-11-26 02:16:25 +0100 | [diff] [blame] | 14 | #include <linux/sizes.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 15 | #include <linux/slab.h> |
Paul Gortmaker | 0205a90 | 2011-07-15 12:01:27 -0400 | [diff] [blame] | 16 | #include <linux/stat.h> |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 17 | #include <linux/pm_runtime.h> |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 18 | |
| 19 | #include <linux/mmc/host.h> |
| 20 | #include <linux/mmc/card.h> |
| 21 | #include <linux/mmc/mmc.h> |
Pierre Ossman | 3373c0a | 2007-05-31 22:25:11 +0200 | [diff] [blame] | 22 | #include <linux/mmc/sd.h> |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 23 | |
| 24 | #include "core.h" |
Pierre Ossman | 4101c16 | 2007-05-19 13:39:01 +0200 | [diff] [blame] | 25 | #include "bus.h" |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 26 | #include "mmc_ops.h" |
Mark Brown | ce10149 | 2011-02-10 10:58:37 +0000 | [diff] [blame] | 27 | #include "sd.h" |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 28 | #include "sd_ops.h" |
| 29 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 30 | static const unsigned int tran_exp[] = { |
| 31 | 10000, 100000, 1000000, 10000000, |
| 32 | 0, 0, 0, 0 |
| 33 | }; |
| 34 | |
| 35 | static const unsigned char tran_mant[] = { |
| 36 | 0, 10, 12, 13, 15, 20, 25, 30, |
| 37 | 35, 40, 45, 50, 55, 60, 70, 80, |
| 38 | }; |
| 39 | |
| 40 | static const unsigned int tacc_exp[] = { |
| 41 | 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, |
| 42 | }; |
| 43 | |
| 44 | static const unsigned int tacc_mant[] = { |
| 45 | 0, 10, 12, 13, 15, 20, 25, 30, |
| 46 | 35, 40, 45, 50, 55, 60, 70, 80, |
| 47 | }; |
| 48 | |
Wolfram Sang | 9288cac | 2013-11-26 02:16:25 +0100 | [diff] [blame] | 49 | static const unsigned int sd_au_size[] = { |
| 50 | 0, SZ_16K / 512, SZ_32K / 512, SZ_64K / 512, |
| 51 | SZ_128K / 512, SZ_256K / 512, SZ_512K / 512, SZ_1M / 512, |
| 52 | SZ_2M / 512, SZ_4M / 512, SZ_8M / 512, (SZ_8M + SZ_4M) / 512, |
| 53 | SZ_16M / 512, (SZ_16M + SZ_8M) / 512, SZ_32M / 512, SZ_64M / 512, |
| 54 | }; |
| 55 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 56 | #define UNSTUFF_BITS(resp,start,size) \ |
| 57 | ({ \ |
| 58 | const int __size = size; \ |
| 59 | const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ |
| 60 | const int __off = 3 - ((start) / 32); \ |
| 61 | const int __shft = (start) & 31; \ |
| 62 | u32 __res; \ |
| 63 | \ |
| 64 | __res = resp[__off] >> __shft; \ |
| 65 | if (__size + __shft > 32) \ |
| 66 | __res |= resp[__off-1] << ((32 - __shft) % 32); \ |
| 67 | __res & __mask; \ |
| 68 | }) |
| 69 | |
| 70 | /* |
| 71 | * Given the decoded CSD structure, decode the raw CID to our CID structure. |
| 72 | */ |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 73 | void mmc_decode_cid(struct mmc_card *card) |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 74 | { |
| 75 | u32 *resp = card->raw_cid; |
| 76 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 77 | /* |
| 78 | * SD doesn't currently have a version field so we will |
| 79 | * have to assume we can parse this. |
| 80 | */ |
| 81 | card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); |
| 82 | card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); |
| 83 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); |
| 84 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); |
| 85 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); |
| 86 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); |
| 87 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); |
| 88 | card->cid.hwrev = UNSTUFF_BITS(resp, 60, 4); |
| 89 | card->cid.fwrev = UNSTUFF_BITS(resp, 56, 4); |
| 90 | card->cid.serial = UNSTUFF_BITS(resp, 24, 32); |
| 91 | card->cid.year = UNSTUFF_BITS(resp, 12, 8); |
| 92 | card->cid.month = UNSTUFF_BITS(resp, 8, 4); |
| 93 | |
| 94 | card->cid.year += 2000; /* SD cards year offset */ |
| 95 | } |
| 96 | |
| 97 | /* |
| 98 | * Given a 128-bit response, decode to our card CSD structure. |
| 99 | */ |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 100 | static int mmc_decode_csd(struct mmc_card *card) |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 101 | { |
| 102 | struct mmc_csd *csd = &card->csd; |
| 103 | unsigned int e, m, csd_struct; |
| 104 | u32 *resp = card->raw_csd; |
| 105 | |
| 106 | csd_struct = UNSTUFF_BITS(resp, 126, 2); |
| 107 | |
| 108 | switch (csd_struct) { |
| 109 | case 0: |
| 110 | m = UNSTUFF_BITS(resp, 115, 4); |
| 111 | e = UNSTUFF_BITS(resp, 112, 3); |
| 112 | csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; |
| 113 | csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; |
| 114 | |
| 115 | m = UNSTUFF_BITS(resp, 99, 4); |
| 116 | e = UNSTUFF_BITS(resp, 96, 3); |
| 117 | csd->max_dtr = tran_exp[e] * tran_mant[m]; |
| 118 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); |
| 119 | |
| 120 | e = UNSTUFF_BITS(resp, 47, 3); |
| 121 | m = UNSTUFF_BITS(resp, 62, 12); |
| 122 | csd->capacity = (1 + m) << (e + 2); |
| 123 | |
| 124 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); |
| 125 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); |
| 126 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); |
| 127 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); |
Sascha Hauer | 3d705d1 | 2014-08-19 10:45:51 +0200 | [diff] [blame] | 128 | csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 129 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); |
| 130 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); |
| 131 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 132 | |
| 133 | if (UNSTUFF_BITS(resp, 46, 1)) { |
| 134 | csd->erase_size = 1; |
| 135 | } else if (csd->write_blkbits >= 9) { |
| 136 | csd->erase_size = UNSTUFF_BITS(resp, 39, 7) + 1; |
| 137 | csd->erase_size <<= csd->write_blkbits - 9; |
| 138 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 139 | break; |
| 140 | case 1: |
| 141 | /* |
Arindam Nath | 3a30351 | 2011-05-05 12:19:03 +0530 | [diff] [blame] | 142 | * This is a block-addressed SDHC or SDXC card. Most |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 143 | * interesting fields are unused and have fixed |
| 144 | * values. To avoid getting tripped by buggy cards, |
| 145 | * we assume those fixed values ourselves. |
| 146 | */ |
| 147 | mmc_card_set_blockaddr(card); |
| 148 | |
| 149 | csd->tacc_ns = 0; /* Unused */ |
| 150 | csd->tacc_clks = 0; /* Unused */ |
| 151 | |
| 152 | m = UNSTUFF_BITS(resp, 99, 4); |
| 153 | e = UNSTUFF_BITS(resp, 96, 3); |
| 154 | csd->max_dtr = tran_exp[e] * tran_mant[m]; |
| 155 | csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); |
Arindam Nath | 3a30351 | 2011-05-05 12:19:03 +0530 | [diff] [blame] | 156 | csd->c_size = UNSTUFF_BITS(resp, 48, 22); |
| 157 | |
| 158 | /* SDXC cards have a minimum C_SIZE of 0x00FFFF */ |
| 159 | if (csd->c_size >= 0xFFFF) |
| 160 | mmc_card_set_ext_capacity(card); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 161 | |
| 162 | m = UNSTUFF_BITS(resp, 48, 22); |
| 163 | csd->capacity = (1 + m) << 10; |
| 164 | |
| 165 | csd->read_blkbits = 9; |
| 166 | csd->read_partial = 0; |
| 167 | csd->write_misalign = 0; |
| 168 | csd->read_misalign = 0; |
| 169 | csd->r2w_factor = 4; /* Unused */ |
| 170 | csd->write_blkbits = 9; |
| 171 | csd->write_partial = 0; |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 172 | csd->erase_size = 1; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 173 | break; |
| 174 | default: |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 175 | pr_err("%s: unrecognised CSD structure version %d\n", |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 176 | mmc_hostname(card->host), csd_struct); |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 177 | return -EINVAL; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 178 | } |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 179 | |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 180 | card->erase_size = csd->erase_size; |
| 181 | |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 182 | return 0; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 183 | } |
| 184 | |
| 185 | /* |
| 186 | * Given a 64-bit response, decode to our card SCR structure. |
| 187 | */ |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 188 | static int mmc_decode_scr(struct mmc_card *card) |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 189 | { |
| 190 | struct sd_scr *scr = &card->scr; |
| 191 | unsigned int scr_struct; |
| 192 | u32 resp[4]; |
| 193 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 194 | resp[3] = card->raw_scr[1]; |
| 195 | resp[2] = card->raw_scr[0]; |
| 196 | |
| 197 | scr_struct = UNSTUFF_BITS(resp, 60, 4); |
| 198 | if (scr_struct != 0) { |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 199 | pr_err("%s: unrecognised SCR structure version %d\n", |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 200 | mmc_hostname(card->host), scr_struct); |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 201 | return -EINVAL; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 202 | } |
| 203 | |
| 204 | scr->sda_vsn = UNSTUFF_BITS(resp, 56, 4); |
| 205 | scr->bus_widths = UNSTUFF_BITS(resp, 48, 4); |
Arindam Nath | 013909c | 2011-05-05 12:18:58 +0530 | [diff] [blame] | 206 | if (scr->sda_vsn == SCR_SPEC_VER_2) |
| 207 | /* Check if Physical Layer Spec v3.0 is supported */ |
| 208 | scr->sda_spec3 = UNSTUFF_BITS(resp, 47, 1); |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 209 | |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 210 | if (UNSTUFF_BITS(resp, 55, 1)) |
| 211 | card->erased_byte = 0xFF; |
| 212 | else |
| 213 | card->erased_byte = 0x0; |
| 214 | |
Andrei Warkentin | f0d8997 | 2011-05-23 15:06:38 -0500 | [diff] [blame] | 215 | if (scr->sda_spec3) |
| 216 | scr->cmds = UNSTUFF_BITS(resp, 32, 2); |
Raul E Rangel | 48b759f | 2019-04-29 11:32:39 -0600 | [diff] [blame] | 217 | |
| 218 | /* SD Spec says: any SD Card shall set at least bits 0 and 2 */ |
| 219 | if (!(scr->bus_widths & SD_SCR_BUS_WIDTH_1) || |
| 220 | !(scr->bus_widths & SD_SCR_BUS_WIDTH_4)) { |
| 221 | pr_err("%s: invalid bus width\n", mmc_hostname(card->host)); |
| 222 | return -EINVAL; |
| 223 | } |
| 224 | |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 225 | return 0; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 226 | } |
| 227 | |
| 228 | /* |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 229 | * Fetch and process SD Status register. |
| 230 | */ |
| 231 | static int mmc_read_ssr(struct mmc_card *card) |
| 232 | { |
| 233 | unsigned int au, es, et, eo; |
Paul Burton | efd16f7 | 2016-11-11 14:22:36 +0000 | [diff] [blame] | 234 | u32 *raw_ssr; |
Uri Yanai | 5275a65 | 2016-08-14 11:46:36 +0300 | [diff] [blame] | 235 | int i; |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 236 | |
| 237 | if (!(card->csd.cmdclass & CCC_APP_SPEC)) { |
Joe Perches | 6606110 | 2014-09-12 14:56:56 -0700 | [diff] [blame] | 238 | pr_warn("%s: card lacks mandatory SD Status function\n", |
| 239 | mmc_hostname(card->host)); |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 240 | return 0; |
| 241 | } |
| 242 | |
Paul Burton | efd16f7 | 2016-11-11 14:22:36 +0000 | [diff] [blame] | 243 | raw_ssr = kmalloc(sizeof(card->raw_ssr), GFP_KERNEL); |
| 244 | if (!raw_ssr) |
| 245 | return -ENOMEM; |
| 246 | |
| 247 | if (mmc_app_sd_status(card, raw_ssr)) { |
Joe Perches | 6606110 | 2014-09-12 14:56:56 -0700 | [diff] [blame] | 248 | pr_warn("%s: problem reading SD Status register\n", |
| 249 | mmc_hostname(card->host)); |
Paul Burton | efd16f7 | 2016-11-11 14:22:36 +0000 | [diff] [blame] | 250 | kfree(raw_ssr); |
Uri Yanai | 5275a65 | 2016-08-14 11:46:36 +0300 | [diff] [blame] | 251 | return 0; |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 252 | } |
| 253 | |
| 254 | for (i = 0; i < 16; i++) |
Paul Burton | efd16f7 | 2016-11-11 14:22:36 +0000 | [diff] [blame] | 255 | card->raw_ssr[i] = be32_to_cpu(raw_ssr[i]); |
| 256 | |
| 257 | kfree(raw_ssr); |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 258 | |
| 259 | /* |
| 260 | * UNSTUFF_BITS only works with four u32s so we have to offset the |
| 261 | * bitfield positions accordingly. |
| 262 | */ |
Uri Yanai | 5275a65 | 2016-08-14 11:46:36 +0300 | [diff] [blame] | 263 | au = UNSTUFF_BITS(card->raw_ssr, 428 - 384, 4); |
Wolfram Sang | 9288cac | 2013-11-26 02:16:25 +0100 | [diff] [blame] | 264 | if (au) { |
| 265 | if (au <= 9 || card->scr.sda_spec3) { |
| 266 | card->ssr.au = sd_au_size[au]; |
Uri Yanai | 5275a65 | 2016-08-14 11:46:36 +0300 | [diff] [blame] | 267 | es = UNSTUFF_BITS(card->raw_ssr, 408 - 384, 16); |
| 268 | et = UNSTUFF_BITS(card->raw_ssr, 402 - 384, 6); |
Wolfram Sang | 9288cac | 2013-11-26 02:16:25 +0100 | [diff] [blame] | 269 | if (es && et) { |
Uri Yanai | 5275a65 | 2016-08-14 11:46:36 +0300 | [diff] [blame] | 270 | eo = UNSTUFF_BITS(card->raw_ssr, 400 - 384, 2); |
Wolfram Sang | 9288cac | 2013-11-26 02:16:25 +0100 | [diff] [blame] | 271 | card->ssr.erase_timeout = (et * 1000) / es; |
| 272 | card->ssr.erase_offset = eo * 1000; |
| 273 | } |
| 274 | } else { |
Joe Perches | 6606110 | 2014-09-12 14:56:56 -0700 | [diff] [blame] | 275 | pr_warn("%s: SD Status: Invalid Allocation Unit size\n", |
| 276 | mmc_hostname(card->host)); |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 277 | } |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 278 | } |
Uri Yanai | 5275a65 | 2016-08-14 11:46:36 +0300 | [diff] [blame] | 279 | |
| 280 | return 0; |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 281 | } |
| 282 | |
| 283 | /* |
Pierre Ossman | 1addfcd | 2007-05-01 14:46:08 +0200 | [diff] [blame] | 284 | * Fetches and decodes switch information |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 285 | */ |
Pierre Ossman | 1addfcd | 2007-05-01 14:46:08 +0200 | [diff] [blame] | 286 | static int mmc_read_switch(struct mmc_card *card) |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 287 | { |
| 288 | int err; |
| 289 | u8 *status; |
| 290 | |
Pierre Ossman | 3373c0a | 2007-05-31 22:25:11 +0200 | [diff] [blame] | 291 | if (card->scr.sda_vsn < SCR_SPEC_VER_1) |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 292 | return 0; |
Pierre Ossman | 3373c0a | 2007-05-31 22:25:11 +0200 | [diff] [blame] | 293 | |
| 294 | if (!(card->csd.cmdclass & CCC_SWITCH)) { |
Joe Perches | 6606110 | 2014-09-12 14:56:56 -0700 | [diff] [blame] | 295 | pr_warn("%s: card lacks mandatory switch function, performance might suffer\n", |
Pierre Ossman | 3373c0a | 2007-05-31 22:25:11 +0200 | [diff] [blame] | 296 | mmc_hostname(card->host)); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 297 | return 0; |
Pierre Ossman | 3373c0a | 2007-05-31 22:25:11 +0200 | [diff] [blame] | 298 | } |
| 299 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 300 | err = -EIO; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 301 | |
| 302 | status = kmalloc(64, GFP_KERNEL); |
| 303 | if (!status) { |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 304 | pr_err("%s: could not allocate a buffer for " |
Arindam Nath | 013909c | 2011-05-05 12:18:58 +0530 | [diff] [blame] | 305 | "switch capabilities.\n", |
| 306 | mmc_hostname(card->host)); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 307 | return -ENOMEM; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 308 | } |
| 309 | |
Aaron Lu | a39ca6ae | 2012-07-03 14:16:11 +0800 | [diff] [blame] | 310 | /* |
| 311 | * Find out the card's support bits with a mode 0 operation. |
| 312 | * The argument does not matter, as the support bits do not |
| 313 | * change with the arguments. |
| 314 | */ |
| 315 | err = mmc_sd_switch(card, 0, 0, 0, status); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 316 | if (err) { |
Arindam Nath | 013909c | 2011-05-05 12:18:58 +0530 | [diff] [blame] | 317 | /* |
| 318 | * If the host or the card can't do the switch, |
| 319 | * fail more gracefully. |
| 320 | */ |
| 321 | if (err != -EINVAL && err != -ENOSYS && err != -EFAULT) |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 322 | goto out; |
| 323 | |
Joe Perches | 6606110 | 2014-09-12 14:56:56 -0700 | [diff] [blame] | 324 | pr_warn("%s: problem reading Bus Speed modes\n", |
Pierre Ossman | 3373c0a | 2007-05-31 22:25:11 +0200 | [diff] [blame] | 325 | mmc_hostname(card->host)); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 326 | err = 0; |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 327 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 328 | goto out; |
| 329 | } |
| 330 | |
Qiang Liu | fffe5d5 | 2011-11-08 08:43:08 -0500 | [diff] [blame] | 331 | if (status[13] & SD_MODE_HIGH_SPEED) |
| 332 | card->sw_caps.hs_max_dtr = HIGH_SPEED_MAX_DTR; |
Subhash Jadavani | f2815f6 | 2011-08-10 11:16:01 +0530 | [diff] [blame] | 333 | |
Arindam Nath | 013909c | 2011-05-05 12:18:58 +0530 | [diff] [blame] | 334 | if (card->scr.sda_spec3) { |
| 335 | card->sw_caps.sd3_bus_mode = status[13]; |
Aaron Lu | a39ca6ae | 2012-07-03 14:16:11 +0800 | [diff] [blame] | 336 | /* Driver Strengths supported by the card */ |
Arindam Nath | 013909c | 2011-05-05 12:18:58 +0530 | [diff] [blame] | 337 | card->sw_caps.sd3_drv_type = status[9]; |
Russell King | d981278 | 2016-01-02 10:06:29 +0000 | [diff] [blame] | 338 | card->sw_caps.sd3_curr_limit = status[7] | status[6] << 8; |
Arindam Nath | 013909c | 2011-05-05 12:18:58 +0530 | [diff] [blame] | 339 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 340 | |
Pierre Ossman | 1addfcd | 2007-05-01 14:46:08 +0200 | [diff] [blame] | 341 | out: |
| 342 | kfree(status); |
| 343 | |
| 344 | return err; |
| 345 | } |
| 346 | |
| 347 | /* |
| 348 | * Test if the card supports high-speed mode and, if so, switch to it. |
| 349 | */ |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 350 | int mmc_sd_switch_hs(struct mmc_card *card) |
Pierre Ossman | 1addfcd | 2007-05-01 14:46:08 +0200 | [diff] [blame] | 351 | { |
| 352 | int err; |
| 353 | u8 *status; |
| 354 | |
Pierre Ossman | 3373c0a | 2007-05-31 22:25:11 +0200 | [diff] [blame] | 355 | if (card->scr.sda_vsn < SCR_SPEC_VER_1) |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 356 | return 0; |
Pierre Ossman | 3373c0a | 2007-05-31 22:25:11 +0200 | [diff] [blame] | 357 | |
| 358 | if (!(card->csd.cmdclass & CCC_SWITCH)) |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 359 | return 0; |
Pierre Ossman | 3373c0a | 2007-05-31 22:25:11 +0200 | [diff] [blame] | 360 | |
Pierre Ossman | 1addfcd | 2007-05-01 14:46:08 +0200 | [diff] [blame] | 361 | if (!(card->host->caps & MMC_CAP_SD_HIGHSPEED)) |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 362 | return 0; |
Pierre Ossman | 1addfcd | 2007-05-01 14:46:08 +0200 | [diff] [blame] | 363 | |
| 364 | if (card->sw_caps.hs_max_dtr == 0) |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 365 | return 0; |
Pierre Ossman | 1addfcd | 2007-05-01 14:46:08 +0200 | [diff] [blame] | 366 | |
Pierre Ossman | 1addfcd | 2007-05-01 14:46:08 +0200 | [diff] [blame] | 367 | status = kmalloc(64, GFP_KERNEL); |
| 368 | if (!status) { |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 369 | pr_err("%s: could not allocate a buffer for " |
Pierre Ossman | facba91 | 2007-07-24 21:53:43 +0200 | [diff] [blame] | 370 | "switch capabilities.\n", mmc_hostname(card->host)); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 371 | return -ENOMEM; |
Pierre Ossman | 1addfcd | 2007-05-01 14:46:08 +0200 | [diff] [blame] | 372 | } |
| 373 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 374 | err = mmc_sd_switch(card, 1, 0, 1, status); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 375 | if (err) |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 376 | goto out; |
| 377 | |
| 378 | if ((status[16] & 0xF) != 1) { |
Joe Perches | 6606110 | 2014-09-12 14:56:56 -0700 | [diff] [blame] | 379 | pr_warn("%s: Problem switching card into high-speed mode!\n", |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 380 | mmc_hostname(card->host)); |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 381 | err = 0; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 382 | } else { |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 383 | err = 1; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 384 | } |
| 385 | |
| 386 | out: |
| 387 | kfree(status); |
| 388 | |
| 389 | return err; |
| 390 | } |
| 391 | |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 392 | static int sd_select_driver_type(struct mmc_card *card, u8 *status) |
| 393 | { |
Adrian Hunter | fa021ce | 2015-02-06 14:12:53 +0200 | [diff] [blame] | 394 | int card_drv_type, drive_strength, drv_type; |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 395 | int err; |
| 396 | |
Adrian Hunter | 3853a04 | 2015-02-06 14:12:56 +0200 | [diff] [blame] | 397 | card->drive_strength = 0; |
| 398 | |
Adrian Hunter | fa021ce | 2015-02-06 14:12:53 +0200 | [diff] [blame] | 399 | card_drv_type = card->sw_caps.sd3_drv_type | SD_DRIVER_TYPE_B; |
Philip Rakity | ca8e99b | 2011-07-06 08:51:32 -0700 | [diff] [blame] | 400 | |
Adrian Hunter | e23350b | 2015-02-06 14:12:55 +0200 | [diff] [blame] | 401 | drive_strength = mmc_select_drive_strength(card, |
| 402 | card->sw_caps.uhs_max_dtr, |
| 403 | card_drv_type, &drv_type); |
Philip Rakity | ca8e99b | 2011-07-06 08:51:32 -0700 | [diff] [blame] | 404 | |
Adrian Hunter | b4f30a1 | 2015-02-06 14:12:52 +0200 | [diff] [blame] | 405 | if (drive_strength) { |
| 406 | err = mmc_sd_switch(card, 1, 2, drive_strength, status); |
| 407 | if (err) |
| 408 | return err; |
| 409 | if ((status[15] & 0xF) != drive_strength) { |
| 410 | pr_warn("%s: Problem setting drive strength!\n", |
| 411 | mmc_hostname(card->host)); |
| 412 | return 0; |
| 413 | } |
Adrian Hunter | 3853a04 | 2015-02-06 14:12:56 +0200 | [diff] [blame] | 414 | card->drive_strength = drive_strength; |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 415 | } |
| 416 | |
Adrian Hunter | b4f30a1 | 2015-02-06 14:12:52 +0200 | [diff] [blame] | 417 | if (drv_type) |
| 418 | mmc_set_driver_type(card->host, drv_type); |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 419 | |
| 420 | return 0; |
| 421 | } |
| 422 | |
Subhash Jadavani | 93c712f | 2011-08-09 12:19:31 +0530 | [diff] [blame] | 423 | static void sd_update_bus_speed_mode(struct mmc_card *card) |
Arindam Nath | 49c468f | 2011-05-05 12:19:01 +0530 | [diff] [blame] | 424 | { |
Arindam Nath | 49c468f | 2011-05-05 12:19:01 +0530 | [diff] [blame] | 425 | /* |
| 426 | * If the host doesn't support any of the UHS-I modes, fallback on |
| 427 | * default speed. |
| 428 | */ |
Johan Rudholm | 3f8a7fa | 2013-01-28 15:08:24 +0100 | [diff] [blame] | 429 | if (!mmc_host_uhs(card->host)) { |
Subhash Jadavani | 93c712f | 2011-08-09 12:19:31 +0530 | [diff] [blame] | 430 | card->sd_bus_speed = 0; |
| 431 | return; |
| 432 | } |
Arindam Nath | 49c468f | 2011-05-05 12:19:01 +0530 | [diff] [blame] | 433 | |
| 434 | if ((card->host->caps & MMC_CAP_UHS_SDR104) && |
| 435 | (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR104)) { |
Subhash Jadavani | 93c712f | 2011-08-09 12:19:31 +0530 | [diff] [blame] | 436 | card->sd_bus_speed = UHS_SDR104_BUS_SPEED; |
Arindam Nath | 49c468f | 2011-05-05 12:19:01 +0530 | [diff] [blame] | 437 | } else if ((card->host->caps & MMC_CAP_UHS_DDR50) && |
| 438 | (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_DDR50)) { |
Subhash Jadavani | 93c712f | 2011-08-09 12:19:31 +0530 | [diff] [blame] | 439 | card->sd_bus_speed = UHS_DDR50_BUS_SPEED; |
Arindam Nath | 49c468f | 2011-05-05 12:19:01 +0530 | [diff] [blame] | 440 | } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | |
| 441 | MMC_CAP_UHS_SDR50)) && (card->sw_caps.sd3_bus_mode & |
| 442 | SD_MODE_UHS_SDR50)) { |
Subhash Jadavani | 93c712f | 2011-08-09 12:19:31 +0530 | [diff] [blame] | 443 | card->sd_bus_speed = UHS_SDR50_BUS_SPEED; |
Arindam Nath | 49c468f | 2011-05-05 12:19:01 +0530 | [diff] [blame] | 444 | } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | |
| 445 | MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25)) && |
| 446 | (card->sw_caps.sd3_bus_mode & SD_MODE_UHS_SDR25)) { |
Subhash Jadavani | 93c712f | 2011-08-09 12:19:31 +0530 | [diff] [blame] | 447 | card->sd_bus_speed = UHS_SDR25_BUS_SPEED; |
Arindam Nath | 49c468f | 2011-05-05 12:19:01 +0530 | [diff] [blame] | 448 | } else if ((card->host->caps & (MMC_CAP_UHS_SDR104 | |
| 449 | MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR25 | |
| 450 | MMC_CAP_UHS_SDR12)) && (card->sw_caps.sd3_bus_mode & |
| 451 | SD_MODE_UHS_SDR12)) { |
Subhash Jadavani | 93c712f | 2011-08-09 12:19:31 +0530 | [diff] [blame] | 452 | card->sd_bus_speed = UHS_SDR12_BUS_SPEED; |
| 453 | } |
| 454 | } |
| 455 | |
| 456 | static int sd_set_bus_speed_mode(struct mmc_card *card, u8 *status) |
| 457 | { |
| 458 | int err; |
| 459 | unsigned int timing = 0; |
| 460 | |
| 461 | switch (card->sd_bus_speed) { |
| 462 | case UHS_SDR104_BUS_SPEED: |
| 463 | timing = MMC_TIMING_UHS_SDR104; |
| 464 | card->sw_caps.uhs_max_dtr = UHS_SDR104_MAX_DTR; |
| 465 | break; |
| 466 | case UHS_DDR50_BUS_SPEED: |
| 467 | timing = MMC_TIMING_UHS_DDR50; |
| 468 | card->sw_caps.uhs_max_dtr = UHS_DDR50_MAX_DTR; |
| 469 | break; |
| 470 | case UHS_SDR50_BUS_SPEED: |
| 471 | timing = MMC_TIMING_UHS_SDR50; |
| 472 | card->sw_caps.uhs_max_dtr = UHS_SDR50_MAX_DTR; |
| 473 | break; |
| 474 | case UHS_SDR25_BUS_SPEED: |
| 475 | timing = MMC_TIMING_UHS_SDR25; |
| 476 | card->sw_caps.uhs_max_dtr = UHS_SDR25_MAX_DTR; |
| 477 | break; |
| 478 | case UHS_SDR12_BUS_SPEED: |
| 479 | timing = MMC_TIMING_UHS_SDR12; |
| 480 | card->sw_caps.uhs_max_dtr = UHS_SDR12_MAX_DTR; |
| 481 | break; |
| 482 | default: |
| 483 | return 0; |
Arindam Nath | 49c468f | 2011-05-05 12:19:01 +0530 | [diff] [blame] | 484 | } |
| 485 | |
Subhash Jadavani | 93c712f | 2011-08-09 12:19:31 +0530 | [diff] [blame] | 486 | err = mmc_sd_switch(card, 1, 0, card->sd_bus_speed, status); |
Arindam Nath | 49c468f | 2011-05-05 12:19:01 +0530 | [diff] [blame] | 487 | if (err) |
| 488 | return err; |
| 489 | |
Subhash Jadavani | 93c712f | 2011-08-09 12:19:31 +0530 | [diff] [blame] | 490 | if ((status[16] & 0xF) != card->sd_bus_speed) |
Joe Perches | 6606110 | 2014-09-12 14:56:56 -0700 | [diff] [blame] | 491 | pr_warn("%s: Problem setting bus speed mode!\n", |
Arindam Nath | 49c468f | 2011-05-05 12:19:01 +0530 | [diff] [blame] | 492 | mmc_hostname(card->host)); |
| 493 | else { |
| 494 | mmc_set_timing(card->host, timing); |
| 495 | mmc_set_clock(card->host, card->sw_caps.uhs_max_dtr); |
| 496 | } |
| 497 | |
| 498 | return 0; |
| 499 | } |
| 500 | |
Aaron Lu | 55c4665 | 2012-07-04 13:31:48 +0800 | [diff] [blame] | 501 | /* Get host's max current setting at its current voltage */ |
| 502 | static u32 sd_get_host_max_current(struct mmc_host *host) |
| 503 | { |
| 504 | u32 voltage, max_current; |
| 505 | |
| 506 | voltage = 1 << host->ios.vdd; |
| 507 | switch (voltage) { |
| 508 | case MMC_VDD_165_195: |
| 509 | max_current = host->max_current_180; |
| 510 | break; |
| 511 | case MMC_VDD_29_30: |
| 512 | case MMC_VDD_30_31: |
| 513 | max_current = host->max_current_300; |
| 514 | break; |
| 515 | case MMC_VDD_32_33: |
| 516 | case MMC_VDD_33_34: |
| 517 | max_current = host->max_current_330; |
| 518 | break; |
| 519 | default: |
| 520 | max_current = 0; |
| 521 | } |
| 522 | |
| 523 | return max_current; |
| 524 | } |
| 525 | |
Arindam Nath | 5371c92 | 2011-05-05 12:19:02 +0530 | [diff] [blame] | 526 | static int sd_set_current_limit(struct mmc_card *card, u8 *status) |
| 527 | { |
Philip Rakity | 0aa6770 | 2012-05-27 18:36:33 -0700 | [diff] [blame] | 528 | int current_limit = SD_SET_CURRENT_NO_CHANGE; |
Arindam Nath | 5371c92 | 2011-05-05 12:19:02 +0530 | [diff] [blame] | 529 | int err; |
Aaron Lu | 55c4665 | 2012-07-04 13:31:48 +0800 | [diff] [blame] | 530 | u32 max_current; |
Arindam Nath | 5371c92 | 2011-05-05 12:19:02 +0530 | [diff] [blame] | 531 | |
| 532 | /* |
| 533 | * Current limit switch is only defined for SDR50, SDR104, and DDR50 |
Philip Rakity | 0aa6770 | 2012-05-27 18:36:33 -0700 | [diff] [blame] | 534 | * bus speed modes. For other bus speed modes, we do not change the |
| 535 | * current limit. |
Aaron Lu | 55c4665 | 2012-07-04 13:31:48 +0800 | [diff] [blame] | 536 | */ |
| 537 | if ((card->sd_bus_speed != UHS_SDR50_BUS_SPEED) && |
| 538 | (card->sd_bus_speed != UHS_SDR104_BUS_SPEED) && |
| 539 | (card->sd_bus_speed != UHS_DDR50_BUS_SPEED)) |
| 540 | return 0; |
| 541 | |
| 542 | /* |
| 543 | * Host has different current capabilities when operating at |
| 544 | * different voltages, so find out its max current first. |
| 545 | */ |
| 546 | max_current = sd_get_host_max_current(card->host); |
| 547 | |
| 548 | /* |
Aaron Lu | a39ca6ae | 2012-07-03 14:16:11 +0800 | [diff] [blame] | 549 | * We only check host's capability here, if we set a limit that is |
| 550 | * higher than the card's maximum current, the card will be using its |
| 551 | * maximum current, e.g. if the card's maximum current is 300ma, and |
| 552 | * when we set current limit to 200ma, the card will draw 200ma, and |
| 553 | * when we set current limit to 400/600/800ma, the card will draw its |
| 554 | * maximum 300ma from the host. |
Russell King | d981278 | 2016-01-02 10:06:29 +0000 | [diff] [blame] | 555 | * |
| 556 | * The above is incorrect: if we try to set a current limit that is |
| 557 | * not supported by the card, the card can rightfully error out the |
| 558 | * attempt, and remain at the default current limit. This results |
| 559 | * in a 300mA card being limited to 200mA even though the host |
| 560 | * supports 800mA. Failures seen with SanDisk 8GB UHS cards with |
| 561 | * an iMX6 host. --rmk |
Arindam Nath | 5371c92 | 2011-05-05 12:19:02 +0530 | [diff] [blame] | 562 | */ |
Russell King | d981278 | 2016-01-02 10:06:29 +0000 | [diff] [blame] | 563 | if (max_current >= 800 && |
| 564 | card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_800) |
Aaron Lu | 55c4665 | 2012-07-04 13:31:48 +0800 | [diff] [blame] | 565 | current_limit = SD_SET_CURRENT_LIMIT_800; |
Russell King | d981278 | 2016-01-02 10:06:29 +0000 | [diff] [blame] | 566 | else if (max_current >= 600 && |
| 567 | card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_600) |
Aaron Lu | 55c4665 | 2012-07-04 13:31:48 +0800 | [diff] [blame] | 568 | current_limit = SD_SET_CURRENT_LIMIT_600; |
Russell King | d981278 | 2016-01-02 10:06:29 +0000 | [diff] [blame] | 569 | else if (max_current >= 400 && |
| 570 | card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_400) |
Aaron Lu | 55c4665 | 2012-07-04 13:31:48 +0800 | [diff] [blame] | 571 | current_limit = SD_SET_CURRENT_LIMIT_400; |
Russell King | d981278 | 2016-01-02 10:06:29 +0000 | [diff] [blame] | 572 | else if (max_current >= 200 && |
| 573 | card->sw_caps.sd3_curr_limit & SD_MAX_CURRENT_200) |
Aaron Lu | 55c4665 | 2012-07-04 13:31:48 +0800 | [diff] [blame] | 574 | current_limit = SD_SET_CURRENT_LIMIT_200; |
Arindam Nath | 5371c92 | 2011-05-05 12:19:02 +0530 | [diff] [blame] | 575 | |
Philip Rakity | 0aa6770 | 2012-05-27 18:36:33 -0700 | [diff] [blame] | 576 | if (current_limit != SD_SET_CURRENT_NO_CHANGE) { |
| 577 | err = mmc_sd_switch(card, 1, 3, current_limit, status); |
| 578 | if (err) |
| 579 | return err; |
Arindam Nath | 5371c92 | 2011-05-05 12:19:02 +0530 | [diff] [blame] | 580 | |
Philip Rakity | 0aa6770 | 2012-05-27 18:36:33 -0700 | [diff] [blame] | 581 | if (((status[15] >> 4) & 0x0F) != current_limit) |
Joe Perches | 6606110 | 2014-09-12 14:56:56 -0700 | [diff] [blame] | 582 | pr_warn("%s: Problem setting current limit!\n", |
Philip Rakity | 0aa6770 | 2012-05-27 18:36:33 -0700 | [diff] [blame] | 583 | mmc_hostname(card->host)); |
Arindam Nath | 5371c92 | 2011-05-05 12:19:02 +0530 | [diff] [blame] | 584 | |
Philip Rakity | 0aa6770 | 2012-05-27 18:36:33 -0700 | [diff] [blame] | 585 | } |
Aaron Lu | a39ca6ae | 2012-07-03 14:16:11 +0800 | [diff] [blame] | 586 | |
Arindam Nath | 5371c92 | 2011-05-05 12:19:02 +0530 | [diff] [blame] | 587 | return 0; |
| 588 | } |
| 589 | |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 590 | /* |
| 591 | * UHS-I specific initialization procedure |
| 592 | */ |
| 593 | static int mmc_sd_init_uhs_card(struct mmc_card *card) |
| 594 | { |
| 595 | int err; |
| 596 | u8 *status; |
| 597 | |
| 598 | if (!card->scr.sda_spec3) |
| 599 | return 0; |
| 600 | |
| 601 | if (!(card->csd.cmdclass & CCC_SWITCH)) |
| 602 | return 0; |
| 603 | |
| 604 | status = kmalloc(64, GFP_KERNEL); |
| 605 | if (!status) { |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 606 | pr_err("%s: could not allocate a buffer for " |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 607 | "switch capabilities.\n", mmc_hostname(card->host)); |
| 608 | return -ENOMEM; |
| 609 | } |
| 610 | |
| 611 | /* Set 4-bit bus width */ |
| 612 | if ((card->host->caps & MMC_CAP_4_BIT_DATA) && |
| 613 | (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { |
| 614 | err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); |
| 615 | if (err) |
| 616 | goto out; |
| 617 | |
| 618 | mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4); |
| 619 | } |
| 620 | |
Subhash Jadavani | 93c712f | 2011-08-09 12:19:31 +0530 | [diff] [blame] | 621 | /* |
| 622 | * Select the bus speed mode depending on host |
| 623 | * and card capability. |
| 624 | */ |
| 625 | sd_update_bus_speed_mode(card); |
| 626 | |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 627 | /* Set the driver strength for the card */ |
| 628 | err = sd_select_driver_type(card, status); |
Arindam Nath | 49c468f | 2011-05-05 12:19:01 +0530 | [diff] [blame] | 629 | if (err) |
| 630 | goto out; |
| 631 | |
Subhash Jadavani | 93c712f | 2011-08-09 12:19:31 +0530 | [diff] [blame] | 632 | /* Set current limit for the card */ |
| 633 | err = sd_set_current_limit(card, status); |
Arindam Nath | 5371c92 | 2011-05-05 12:19:02 +0530 | [diff] [blame] | 634 | if (err) |
| 635 | goto out; |
| 636 | |
Subhash Jadavani | 93c712f | 2011-08-09 12:19:31 +0530 | [diff] [blame] | 637 | /* Set bus speed mode of the card */ |
| 638 | err = sd_set_bus_speed_mode(card, status); |
Arindam Nath | b513ea2 | 2011-05-05 12:19:04 +0530 | [diff] [blame] | 639 | if (err) |
| 640 | goto out; |
| 641 | |
Fredrik Soderstedt | 810e08e | 2013-04-17 13:50:53 +0200 | [diff] [blame] | 642 | /* |
| 643 | * SPI mode doesn't define CMD19 and tuning is only valid for SDR50 and |
| 644 | * SDR104 mode SD-cards. Note that tuning is mandatory for SDR104. |
| 645 | */ |
Adrian Hunter | 63e415c | 2014-12-05 19:40:59 +0200 | [diff] [blame] | 646 | if (!mmc_host_is_spi(card->host) && |
Carlo Caione | e10c321 | 2016-01-13 09:36:55 +0100 | [diff] [blame] | 647 | (card->host->ios.timing == MMC_TIMING_UHS_SDR50 || |
| 648 | card->host->ios.timing == MMC_TIMING_UHS_DDR50 || |
| 649 | card->host->ios.timing == MMC_TIMING_UHS_SDR104)) { |
Adrian Hunter | 63e415c | 2014-12-05 19:40:59 +0200 | [diff] [blame] | 650 | err = mmc_execute_tuning(card); |
Weijun Yang | 4324f6d | 2015-10-04 12:04:11 +0000 | [diff] [blame] | 651 | |
| 652 | /* |
| 653 | * As SD Specifications Part1 Physical Layer Specification |
| 654 | * Version 3.01 says, CMD19 tuning is available for unlocked |
| 655 | * cards in transfer state of 1.8V signaling mode. The small |
| 656 | * difference between v3.00 and 3.01 spec means that CMD19 |
| 657 | * tuning is also available for DDR50 mode. |
| 658 | */ |
Carlo Caione | e10c321 | 2016-01-13 09:36:55 +0100 | [diff] [blame] | 659 | if (err && card->host->ios.timing == MMC_TIMING_UHS_DDR50) { |
Weijun Yang | 4324f6d | 2015-10-04 12:04:11 +0000 | [diff] [blame] | 660 | pr_warn("%s: ddr50 tuning failed\n", |
| 661 | mmc_hostname(card->host)); |
| 662 | err = 0; |
| 663 | } |
| 664 | } |
| 665 | |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 666 | out: |
| 667 | kfree(status); |
| 668 | |
| 669 | return err; |
| 670 | } |
| 671 | |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 672 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
| 673 | card->raw_cid[2], card->raw_cid[3]); |
| 674 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], |
| 675 | card->raw_csd[2], card->raw_csd[3]); |
| 676 | MMC_DEV_ATTR(scr, "%08x%08x\n", card->raw_scr[0], card->raw_scr[1]); |
Uri Yanai | 5275a65 | 2016-08-14 11:46:36 +0300 | [diff] [blame] | 677 | MMC_DEV_ATTR(ssr, |
| 678 | "%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x%08x\n", |
| 679 | card->raw_ssr[0], card->raw_ssr[1], card->raw_ssr[2], |
| 680 | card->raw_ssr[3], card->raw_ssr[4], card->raw_ssr[5], |
| 681 | card->raw_ssr[6], card->raw_ssr[7], card->raw_ssr[8], |
| 682 | card->raw_ssr[9], card->raw_ssr[10], card->raw_ssr[11], |
| 683 | card->raw_ssr[12], card->raw_ssr[13], card->raw_ssr[14], |
| 684 | card->raw_ssr[15]); |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 685 | MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 686 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
| 687 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 688 | MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); |
| 689 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); |
| 690 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); |
| 691 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); |
| 692 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); |
| 693 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); |
Bastian Stender | c814d67 | 2017-11-28 09:24:07 +0100 | [diff] [blame] | 694 | MMC_DEV_ATTR(ocr, "0x%08x\n", card->ocr); |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 695 | |
| 696 | |
Bojan Prtvar | 6825a60 | 2016-07-19 11:16:38 +0200 | [diff] [blame] | 697 | static ssize_t mmc_dsr_show(struct device *dev, |
| 698 | struct device_attribute *attr, |
| 699 | char *buf) |
| 700 | { |
| 701 | struct mmc_card *card = mmc_dev_to_card(dev); |
| 702 | struct mmc_host *host = card->host; |
| 703 | |
| 704 | if (card->csd.dsr_imp && host->dsr_req) |
| 705 | return sprintf(buf, "0x%x\n", host->dsr); |
| 706 | else |
| 707 | /* return default DSR value */ |
| 708 | return sprintf(buf, "0x%x\n", 0x404); |
| 709 | } |
| 710 | |
| 711 | static DEVICE_ATTR(dsr, S_IRUGO, mmc_dsr_show, NULL); |
| 712 | |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 713 | static struct attribute *sd_std_attrs[] = { |
| 714 | &dev_attr_cid.attr, |
| 715 | &dev_attr_csd.attr, |
| 716 | &dev_attr_scr.attr, |
Uri Yanai | 5275a65 | 2016-08-14 11:46:36 +0300 | [diff] [blame] | 717 | &dev_attr_ssr.attr, |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 718 | &dev_attr_date.attr, |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 719 | &dev_attr_erase_size.attr, |
| 720 | &dev_attr_preferred_erase_size.attr, |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 721 | &dev_attr_fwrev.attr, |
| 722 | &dev_attr_hwrev.attr, |
| 723 | &dev_attr_manfid.attr, |
| 724 | &dev_attr_name.attr, |
| 725 | &dev_attr_oemid.attr, |
| 726 | &dev_attr_serial.attr, |
Bojan Prtvar | 5fb06af | 2016-07-04 13:56:55 +0200 | [diff] [blame] | 727 | &dev_attr_ocr.attr, |
Bojan Prtvar | 6825a60 | 2016-07-19 11:16:38 +0200 | [diff] [blame] | 728 | &dev_attr_dsr.attr, |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 729 | NULL, |
| 730 | }; |
Axel Lin | d1e5821 | 2014-03-08 15:05:27 +0800 | [diff] [blame] | 731 | ATTRIBUTE_GROUPS(sd_std); |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 732 | |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 733 | struct device_type sd_type = { |
Axel Lin | d1e5821 | 2014-03-08 15:05:27 +0800 | [diff] [blame] | 734 | .groups = sd_std_groups, |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 735 | }; |
| 736 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 737 | /* |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 738 | * Fetch CID from card. |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 739 | */ |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 740 | int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr) |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 741 | { |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 742 | int err; |
Aaron Lu | 55c4665 | 2012-07-04 13:31:48 +0800 | [diff] [blame] | 743 | u32 max_current; |
Johan Rudholm | 0797e5f | 2013-01-28 15:08:28 +0100 | [diff] [blame] | 744 | int retries = 10; |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 745 | u32 pocr = ocr; |
Johan Rudholm | 0797e5f | 2013-01-28 15:08:28 +0100 | [diff] [blame] | 746 | |
| 747 | try_again: |
| 748 | if (!retries) { |
| 749 | ocr &= ~SD_OCR_S18R; |
Joe Perches | 6606110 | 2014-09-12 14:56:56 -0700 | [diff] [blame] | 750 | pr_warn("%s: Skipping voltage switch\n", mmc_hostname(host)); |
Johan Rudholm | 0797e5f | 2013-01-28 15:08:28 +0100 | [diff] [blame] | 751 | } |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 752 | |
| 753 | /* |
| 754 | * Since we're changing the OCR value, we seem to |
| 755 | * need to tell some cards to go back to the idle |
| 756 | * state. We wait 1ms to give cards time to |
| 757 | * respond. |
| 758 | */ |
| 759 | mmc_go_idle(host); |
| 760 | |
| 761 | /* |
| 762 | * If SD_SEND_IF_COND indicates an SD 2.0 |
| 763 | * compliant card and we should set bit 30 |
| 764 | * of the ocr to indicate that we can handle |
| 765 | * block-addressed SDHC cards. |
| 766 | */ |
| 767 | err = mmc_send_if_cond(host, ocr); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 768 | if (!err) |
Arindam Nath | f2119df | 2011-05-05 12:18:57 +0530 | [diff] [blame] | 769 | ocr |= SD_OCR_CCS; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 770 | |
Arindam Nath | f2119df | 2011-05-05 12:18:57 +0530 | [diff] [blame] | 771 | /* |
| 772 | * If the host supports one of UHS-I modes, request the card |
Johan Rudholm | 0797e5f | 2013-01-28 15:08:28 +0100 | [diff] [blame] | 773 | * to switch to 1.8V signaling level. If the card has failed |
| 774 | * repeatedly to switch however, skip this. |
Arindam Nath | f2119df | 2011-05-05 12:18:57 +0530 | [diff] [blame] | 775 | */ |
Johan Rudholm | 0797e5f | 2013-01-28 15:08:28 +0100 | [diff] [blame] | 776 | if (retries && mmc_host_uhs(host)) |
Arindam Nath | f2119df | 2011-05-05 12:18:57 +0530 | [diff] [blame] | 777 | ocr |= SD_OCR_S18R; |
| 778 | |
Aaron Lu | 55c4665 | 2012-07-04 13:31:48 +0800 | [diff] [blame] | 779 | /* |
| 780 | * If the host can supply more than 150mA at current voltage, |
| 781 | * XPC should be set to 1. |
| 782 | */ |
| 783 | max_current = sd_get_host_max_current(host); |
| 784 | if (max_current > 150) |
Arindam Nath | f2119df | 2011-05-05 12:18:57 +0530 | [diff] [blame] | 785 | ocr |= SD_OCR_XPC; |
| 786 | |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 787 | err = mmc_send_app_op_cond(host, ocr, rocr); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 788 | if (err) |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 789 | return err; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 790 | |
Arindam Nath | f2119df | 2011-05-05 12:18:57 +0530 | [diff] [blame] | 791 | /* |
| 792 | * In case CCS and S18A in the response is set, start Signal Voltage |
| 793 | * Switch procedure. SPI mode doesn't support CMD11. |
| 794 | */ |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 795 | if (!mmc_host_is_spi(host) && rocr && |
| 796 | ((*rocr & 0x41000000) == 0x41000000)) { |
Ulf Hansson | 0f791fd | 2013-09-12 15:36:34 +0200 | [diff] [blame] | 797 | err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 798 | pocr); |
Johan Rudholm | 0797e5f | 2013-01-28 15:08:28 +0100 | [diff] [blame] | 799 | if (err == -EAGAIN) { |
| 800 | retries--; |
| 801 | goto try_again; |
| 802 | } else if (err) { |
| 803 | retries = 0; |
Arindam Nath | f2119df | 2011-05-05 12:18:57 +0530 | [diff] [blame] | 804 | goto try_again; |
| 805 | } |
| 806 | } |
| 807 | |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 808 | if (mmc_host_is_spi(host)) |
| 809 | err = mmc_send_cid(host, cid); |
| 810 | else |
| 811 | err = mmc_all_send_cid(host, cid); |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 812 | |
| 813 | return err; |
| 814 | } |
| 815 | |
| 816 | int mmc_sd_get_csd(struct mmc_host *host, struct mmc_card *card) |
| 817 | { |
| 818 | int err; |
| 819 | |
| 820 | /* |
| 821 | * Fetch CSD from card. |
| 822 | */ |
| 823 | err = mmc_send_csd(card, card->raw_csd); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 824 | if (err) |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 825 | return err; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 826 | |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 827 | err = mmc_decode_csd(card); |
| 828 | if (err) |
| 829 | return err; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 830 | |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 831 | return 0; |
| 832 | } |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 833 | |
Lars-Peter Clausen | 9f6e0bf | 2015-05-06 20:31:19 +0200 | [diff] [blame] | 834 | static int mmc_sd_get_ro(struct mmc_host *host) |
| 835 | { |
| 836 | int ro; |
| 837 | |
| 838 | /* |
| 839 | * Some systems don't feature a write-protect pin and don't need one. |
| 840 | * E.g. because they only have micro-SD card slot. For those systems |
| 841 | * assume that the SD card is always read-write. |
| 842 | */ |
| 843 | if (host->caps2 & MMC_CAP2_NO_WRITE_PROTECT) |
| 844 | return 0; |
| 845 | |
| 846 | if (!host->ops->get_ro) |
| 847 | return -1; |
| 848 | |
Lars-Peter Clausen | 9f6e0bf | 2015-05-06 20:31:19 +0200 | [diff] [blame] | 849 | ro = host->ops->get_ro(host); |
Lars-Peter Clausen | 9f6e0bf | 2015-05-06 20:31:19 +0200 | [diff] [blame] | 850 | |
| 851 | return ro; |
| 852 | } |
| 853 | |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 854 | int mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card, |
| 855 | bool reinit) |
| 856 | { |
| 857 | int err; |
San Mehat | 6bb7b60 | 2008-11-11 09:35:36 -0800 | [diff] [blame] | 858 | #ifdef CONFIG_MMC_PARANOID_SD_INIT |
| 859 | int retries; |
| 860 | #endif |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 861 | |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 862 | if (!reinit) { |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 863 | /* |
| 864 | * Fetch SCR from card. |
| 865 | */ |
| 866 | err = mmc_app_send_scr(card, card->raw_scr); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 867 | if (err) |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 868 | return err; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 869 | |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 870 | err = mmc_decode_scr(card); |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 871 | if (err) |
| 872 | return err; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 873 | |
| 874 | /* |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 875 | * Fetch and process SD Status register. |
| 876 | */ |
| 877 | err = mmc_read_ssr(card); |
| 878 | if (err) |
| 879 | return err; |
| 880 | |
| 881 | /* Erase init depends on CSD and SSR */ |
| 882 | mmc_init_erase(card); |
| 883 | |
| 884 | /* |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 885 | * Fetch switch information from card. |
| 886 | */ |
San Mehat | 6bb7b60 | 2008-11-11 09:35:36 -0800 | [diff] [blame] | 887 | #ifdef CONFIG_MMC_PARANOID_SD_INIT |
| 888 | for (retries = 1; retries <= 3; retries++) { |
| 889 | err = mmc_read_switch(card); |
| 890 | if (!err) { |
| 891 | if (retries > 1) { |
| 892 | printk(KERN_WARNING |
| 893 | "%s: recovered\n", |
| 894 | mmc_hostname(host)); |
| 895 | } |
| 896 | break; |
| 897 | } else { |
| 898 | printk(KERN_WARNING |
| 899 | "%s: read switch failed (attempt %d)\n", |
| 900 | mmc_hostname(host), retries); |
| 901 | } |
| 902 | } |
| 903 | #else |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 904 | err = mmc_read_switch(card); |
San Mehat | 6bb7b60 | 2008-11-11 09:35:36 -0800 | [diff] [blame] | 905 | #endif |
| 906 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 907 | if (err) |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 908 | return err; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 909 | } |
| 910 | |
| 911 | /* |
Wolfgang Muees | 9d9f25c | 2009-04-07 14:48:16 +0100 | [diff] [blame] | 912 | * For SPI, enable CRC as appropriate. |
| 913 | * This CRC enable is located AFTER the reading of the |
| 914 | * card registers because some SDHC cards are not able |
| 915 | * to provide valid CRCs for non-512-byte blocks. |
| 916 | */ |
| 917 | if (mmc_host_is_spi(host)) { |
| 918 | err = mmc_spi_set_crc(host, use_spi_crc); |
| 919 | if (err) |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 920 | return err; |
Wolfgang Muees | 9d9f25c | 2009-04-07 14:48:16 +0100 | [diff] [blame] | 921 | } |
| 922 | |
| 923 | /* |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 924 | * Check if read-only switch is active. |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 925 | */ |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 926 | if (!reinit) { |
Lars-Peter Clausen | 9f6e0bf | 2015-05-06 20:31:19 +0200 | [diff] [blame] | 927 | int ro = mmc_sd_get_ro(host); |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 928 | |
| 929 | if (ro < 0) { |
Joe Perches | 6606110 | 2014-09-12 14:56:56 -0700 | [diff] [blame] | 930 | pr_warn("%s: host does not support reading read-only switch, assuming write-enable\n", |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 931 | mmc_hostname(host)); |
| 932 | } else if (ro > 0) { |
| 933 | mmc_card_set_readonly(card); |
| 934 | } |
| 935 | } |
| 936 | |
| 937 | return 0; |
| 938 | } |
| 939 | |
| 940 | unsigned mmc_sd_get_max_clock(struct mmc_card *card) |
| 941 | { |
| 942 | unsigned max_dtr = (unsigned int)-1; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 943 | |
Seungwon Jeon | cdc9917 | 2014-04-23 17:07:35 +0900 | [diff] [blame] | 944 | if (mmc_card_hs(card)) { |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 945 | if (max_dtr > card->sw_caps.hs_max_dtr) |
| 946 | max_dtr = card->sw_caps.hs_max_dtr; |
| 947 | } else if (max_dtr > card->csd.max_dtr) { |
| 948 | max_dtr = card->csd.max_dtr; |
| 949 | } |
| 950 | |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 951 | return max_dtr; |
| 952 | } |
| 953 | |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 954 | /* |
| 955 | * Handle the detection and initialisation of a card. |
| 956 | * |
| 957 | * In the case of a resume, "oldcard" will contain the card |
| 958 | * we're trying to reinitialise. |
| 959 | */ |
| 960 | static int mmc_sd_init_card(struct mmc_host *host, u32 ocr, |
| 961 | struct mmc_card *oldcard) |
| 962 | { |
| 963 | struct mmc_card *card; |
| 964 | int err; |
| 965 | u32 cid[4]; |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 966 | u32 rocr = 0; |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 967 | |
| 968 | BUG_ON(!host); |
| 969 | WARN_ON(!host->claimed); |
| 970 | |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 971 | err = mmc_sd_get_cid(host, ocr, cid, &rocr); |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 972 | if (err) |
| 973 | return err; |
| 974 | |
| 975 | if (oldcard) { |
| 976 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) |
| 977 | return -ENOENT; |
| 978 | |
| 979 | card = oldcard; |
| 980 | } else { |
| 981 | /* |
| 982 | * Allocate card structure. |
| 983 | */ |
| 984 | card = mmc_alloc_card(host, &sd_type); |
| 985 | if (IS_ERR(card)) |
| 986 | return PTR_ERR(card); |
| 987 | |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 988 | card->ocr = ocr; |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 989 | card->type = MMC_TYPE_SD; |
| 990 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); |
| 991 | } |
| 992 | |
| 993 | /* |
Doug Anderson | eac8632 | 2014-12-02 15:42:45 -0800 | [diff] [blame] | 994 | * Call the optional HC's init_card function to handle quirks. |
| 995 | */ |
| 996 | if (host->ops->init_card) |
| 997 | host->ops->init_card(host, card); |
| 998 | |
| 999 | /* |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 1000 | * For native busses: get card RCA and quit open drain mode. |
| 1001 | */ |
| 1002 | if (!mmc_host_is_spi(host)) { |
| 1003 | err = mmc_send_relative_addr(host, &card->rca); |
| 1004 | if (err) |
Wei WANG | 7fca967 | 2013-07-17 14:21:10 +0800 | [diff] [blame] | 1005 | goto free_card; |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 1006 | } |
| 1007 | |
| 1008 | if (!oldcard) { |
| 1009 | err = mmc_sd_get_csd(host, card); |
| 1010 | if (err) |
Wei WANG | 7fca967 | 2013-07-17 14:21:10 +0800 | [diff] [blame] | 1011 | goto free_card; |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 1012 | |
| 1013 | mmc_decode_cid(card); |
| 1014 | } |
| 1015 | |
| 1016 | /* |
Sascha Hauer | 3d705d1 | 2014-08-19 10:45:51 +0200 | [diff] [blame] | 1017 | * handling only for cards supporting DSR and hosts requesting |
| 1018 | * DSR configuration |
| 1019 | */ |
| 1020 | if (card->csd.dsr_imp && host->dsr_req) |
| 1021 | mmc_set_dsr(host); |
| 1022 | |
| 1023 | /* |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 1024 | * Select card, as all following commands rely on that. |
| 1025 | */ |
| 1026 | if (!mmc_host_is_spi(host)) { |
| 1027 | err = mmc_select_card(card); |
| 1028 | if (err) |
Wei WANG | 7fca967 | 2013-07-17 14:21:10 +0800 | [diff] [blame] | 1029 | goto free_card; |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 1030 | } |
| 1031 | |
| 1032 | err = mmc_sd_setup_card(host, card, oldcard != NULL); |
| 1033 | if (err) |
| 1034 | goto free_card; |
| 1035 | |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 1036 | /* Initialization sequence for UHS-I cards */ |
| 1037 | if (rocr & SD_ROCR_S18A) { |
| 1038 | err = mmc_sd_init_uhs_card(card); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 1039 | if (err) |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1040 | goto free_card; |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 1041 | } else { |
| 1042 | /* |
| 1043 | * Attempt to change to high-speed (if supported) |
| 1044 | */ |
| 1045 | err = mmc_sd_switch_hs(card); |
| 1046 | if (err > 0) |
Seungwon Jeon | cdc9917 | 2014-04-23 17:07:35 +0900 | [diff] [blame] | 1047 | mmc_set_timing(card->host, MMC_TIMING_SD_HS); |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 1048 | else if (err) |
| 1049 | goto free_card; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1050 | |
Arindam Nath | d6d50a1 | 2011-05-05 12:18:59 +0530 | [diff] [blame] | 1051 | /* |
| 1052 | * Set bus speed. |
| 1053 | */ |
| 1054 | mmc_set_clock(host, mmc_sd_get_max_clock(card)); |
| 1055 | |
| 1056 | /* |
| 1057 | * Switch to wider bus (if supported). |
| 1058 | */ |
| 1059 | if ((host->caps & MMC_CAP_4_BIT_DATA) && |
| 1060 | (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { |
| 1061 | err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); |
| 1062 | if (err) |
| 1063 | goto free_card; |
| 1064 | |
| 1065 | mmc_set_bus_width(host, MMC_BUS_WIDTH_4); |
| 1066 | } |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1067 | } |
| 1068 | |
Michal Miroslaw | 71578a1 | 2010-08-10 18:01:40 -0700 | [diff] [blame] | 1069 | host->card = card; |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 1070 | return 0; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1071 | |
| 1072 | free_card: |
| 1073 | if (!oldcard) |
| 1074 | mmc_remove_card(card); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1075 | |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 1076 | return err; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1077 | } |
| 1078 | |
| 1079 | /* |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1080 | * Host is being removed. Free up the current card. |
| 1081 | */ |
| 1082 | static void mmc_sd_remove(struct mmc_host *host) |
| 1083 | { |
| 1084 | BUG_ON(!host); |
| 1085 | BUG_ON(!host->card); |
| 1086 | |
| 1087 | mmc_remove_card(host->card); |
| 1088 | host->card = NULL; |
| 1089 | } |
| 1090 | |
| 1091 | /* |
Adrian Hunter | d304950 | 2011-11-28 16:22:00 +0200 | [diff] [blame] | 1092 | * Card detection - card is alive. |
| 1093 | */ |
| 1094 | static int mmc_sd_alive(struct mmc_host *host) |
| 1095 | { |
| 1096 | return mmc_send_status(host->card, NULL); |
| 1097 | } |
| 1098 | |
| 1099 | /* |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1100 | * Card detection callback from host. |
| 1101 | */ |
| 1102 | static void mmc_sd_detect(struct mmc_host *host) |
| 1103 | { |
San Mehat | 0a3f562 | 2008-12-04 11:18:00 -0800 | [diff] [blame] | 1104 | int err = 0; |
| 1105 | #ifdef CONFIG_MMC_PARANOID_SD_INIT |
| 1106 | int retries = 5; |
| 1107 | #endif |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1108 | |
| 1109 | BUG_ON(!host); |
| 1110 | BUG_ON(!host->card); |
| 1111 | |
Ulf Hansson | e94cfef | 2013-05-02 14:02:38 +0200 | [diff] [blame] | 1112 | mmc_get_card(host->card); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1113 | |
| 1114 | /* |
| 1115 | * Just check if our card has been removed. |
| 1116 | */ |
San Mehat | 0a3f562 | 2008-12-04 11:18:00 -0800 | [diff] [blame] | 1117 | #ifdef CONFIG_MMC_PARANOID_SD_INIT |
| 1118 | while(retries) { |
| 1119 | err = mmc_send_status(host->card, NULL); |
| 1120 | if (err) { |
| 1121 | retries--; |
| 1122 | udelay(5); |
| 1123 | continue; |
| 1124 | } |
| 1125 | break; |
| 1126 | } |
| 1127 | if (!retries) { |
| 1128 | printk(KERN_ERR "%s(%s): Unable to re-detect card (%d)\n", |
| 1129 | __func__, mmc_hostname(host), err); |
| 1130 | } |
| 1131 | #else |
Adrian Hunter | d304950 | 2011-11-28 16:22:00 +0200 | [diff] [blame] | 1132 | err = _mmc_detect_card_removed(host); |
San Mehat | 0a3f562 | 2008-12-04 11:18:00 -0800 | [diff] [blame] | 1133 | #endif |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1134 | |
Ulf Hansson | e94cfef | 2013-05-02 14:02:38 +0200 | [diff] [blame] | 1135 | mmc_put_card(host->card); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1136 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 1137 | if (err) { |
Pierre Ossman | 4101c16 | 2007-05-19 13:39:01 +0200 | [diff] [blame] | 1138 | mmc_sd_remove(host); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1139 | |
| 1140 | mmc_claim_host(host); |
| 1141 | mmc_detach_bus(host); |
Ulf Hansson | 7f7e412 | 2011-09-21 14:08:13 -0400 | [diff] [blame] | 1142 | mmc_power_off(host); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1143 | mmc_release_host(host); |
| 1144 | } |
| 1145 | } |
| 1146 | |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 1147 | static int _mmc_sd_suspend(struct mmc_host *host) |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1148 | { |
Jaehoon Chung | 85e727e | 2012-05-31 20:31:47 +0900 | [diff] [blame] | 1149 | int err = 0; |
| 1150 | |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1151 | BUG_ON(!host); |
| 1152 | BUG_ON(!host->card); |
| 1153 | |
| 1154 | mmc_claim_host(host); |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 1155 | |
| 1156 | if (mmc_card_suspended(host->card)) |
| 1157 | goto out; |
| 1158 | |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1159 | if (!mmc_host_is_spi(host)) |
Jaehoon Chung | 85e727e | 2012-05-31 20:31:47 +0900 | [diff] [blame] | 1160 | err = mmc_deselect_cards(host); |
Seungwon Jeon | cdc9917 | 2014-04-23 17:07:35 +0900 | [diff] [blame] | 1161 | |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 1162 | if (!err) { |
Ulf Hansson | 7459026 | 2013-06-10 17:03:38 +0200 | [diff] [blame] | 1163 | mmc_power_off(host); |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 1164 | mmc_card_set_suspended(host->card); |
| 1165 | } |
Nicolas Pitre | 95cdfb7 | 2009-09-22 16:45:29 -0700 | [diff] [blame] | 1166 | |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 1167 | out: |
| 1168 | mmc_release_host(host); |
Jaehoon Chung | 85e727e | 2012-05-31 20:31:47 +0900 | [diff] [blame] | 1169 | return err; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1170 | } |
| 1171 | |
| 1172 | /* |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 1173 | * Callback for suspend |
| 1174 | */ |
| 1175 | static int mmc_sd_suspend(struct mmc_host *host) |
| 1176 | { |
| 1177 | int err; |
| 1178 | |
| 1179 | err = _mmc_sd_suspend(host); |
| 1180 | if (!err) { |
| 1181 | pm_runtime_disable(&host->card->dev); |
| 1182 | pm_runtime_set_suspended(&host->card->dev); |
| 1183 | } |
| 1184 | |
| 1185 | return err; |
| 1186 | } |
| 1187 | |
| 1188 | /* |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1189 | * This function tries to determine if the same card is still present |
| 1190 | * and, if so, restore all state to it. |
| 1191 | */ |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 1192 | static int _mmc_sd_resume(struct mmc_host *host) |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1193 | { |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 1194 | int err = 0; |
San Mehat | 3d1bf52 | 2008-12-01 08:52:34 -0800 | [diff] [blame] | 1195 | #ifdef CONFIG_MMC_PARANOID_SD_INIT |
| 1196 | int retries; |
| 1197 | #endif |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1198 | |
| 1199 | BUG_ON(!host); |
| 1200 | BUG_ON(!host->card); |
| 1201 | |
| 1202 | mmc_claim_host(host); |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 1203 | |
| 1204 | if (!mmc_card_suspended(host->card)) |
| 1205 | goto out; |
| 1206 | |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1207 | mmc_power_up(host, host->card->ocr); |
San Mehat | 3d1bf52 | 2008-12-01 08:52:34 -0800 | [diff] [blame] | 1208 | #ifdef CONFIG_MMC_PARANOID_SD_INIT |
| 1209 | retries = 5; |
| 1210 | while (retries) { |
| 1211 | err = mmc_sd_init_card(host, host->card->ocr, host->card); |
| 1212 | |
| 1213 | if (err) { |
| 1214 | printk(KERN_ERR "%s: Re-init card rc = %d (retries = %d)\n", |
| 1215 | mmc_hostname(host), err, retries); |
| 1216 | mdelay(5); |
| 1217 | retries--; |
| 1218 | continue; |
| 1219 | } |
| 1220 | break; |
| 1221 | } |
| 1222 | #else |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1223 | err = mmc_sd_init_card(host, host->card->ocr, host->card); |
San Mehat | 3d1bf52 | 2008-12-01 08:52:34 -0800 | [diff] [blame] | 1224 | #endif |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 1225 | mmc_card_clr_suspended(host->card); |
Pierre Ossman | 2986d0b | 2007-07-22 17:52:06 +0200 | [diff] [blame] | 1226 | |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 1227 | out: |
| 1228 | mmc_release_host(host); |
Nicolas Pitre | 95cdfb7 | 2009-09-22 16:45:29 -0700 | [diff] [blame] | 1229 | return err; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1230 | } |
| 1231 | |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 1232 | /* |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 1233 | * Callback for resume |
| 1234 | */ |
| 1235 | static int mmc_sd_resume(struct mmc_host *host) |
| 1236 | { |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 1237 | pm_runtime_enable(&host->card->dev); |
Ulf Hansson | c29536e | 2015-11-05 16:01:32 +0100 | [diff] [blame] | 1238 | return 0; |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 1239 | } |
| 1240 | |
| 1241 | /* |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 1242 | * Callback for runtime_suspend. |
| 1243 | */ |
| 1244 | static int mmc_sd_runtime_suspend(struct mmc_host *host) |
| 1245 | { |
| 1246 | int err; |
| 1247 | |
| 1248 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) |
| 1249 | return 0; |
| 1250 | |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 1251 | err = _mmc_sd_suspend(host); |
Ulf Hansson | 0cc81a8 | 2013-10-03 11:24:44 +0200 | [diff] [blame] | 1252 | if (err) |
Masanari Iida | f42cf8d | 2015-02-24 23:11:26 +0900 | [diff] [blame] | 1253 | pr_err("%s: error %d doing aggressive suspend\n", |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 1254 | mmc_hostname(host), err); |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 1255 | |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 1256 | return err; |
| 1257 | } |
| 1258 | |
| 1259 | /* |
| 1260 | * Callback for runtime_resume. |
| 1261 | */ |
| 1262 | static int mmc_sd_runtime_resume(struct mmc_host *host) |
| 1263 | { |
| 1264 | int err; |
| 1265 | |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 1266 | err = _mmc_sd_resume(host); |
Adrian Hunter | 520322d | 2015-12-14 15:51:27 +0200 | [diff] [blame] | 1267 | if (err && err != -ENOMEDIUM) |
Ulf Hansson | c29536e | 2015-11-05 16:01:32 +0100 | [diff] [blame] | 1268 | pr_err("%s: error %d doing runtime resume\n", |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 1269 | mmc_hostname(host), err); |
| 1270 | |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 1271 | return 0; |
| 1272 | } |
| 1273 | |
Johan Rudholm | dc0ecfe | 2015-01-12 15:38:06 +0100 | [diff] [blame] | 1274 | static int mmc_sd_reset(struct mmc_host *host) |
| 1275 | { |
| 1276 | mmc_power_cycle(host, host->card->ocr); |
Ulf Hansson | 3056c49 | 2015-06-01 11:14:58 +0200 | [diff] [blame] | 1277 | return mmc_sd_init_card(host, host->card->ocr, host->card); |
Johan Rudholm | dc0ecfe | 2015-01-12 15:38:06 +0100 | [diff] [blame] | 1278 | } |
| 1279 | |
Adrian Hunter | 9feae24 | 2009-09-22 16:44:32 -0700 | [diff] [blame] | 1280 | static const struct mmc_bus_ops mmc_sd_ops = { |
| 1281 | .remove = mmc_sd_remove, |
| 1282 | .detect = mmc_sd_detect, |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 1283 | .runtime_suspend = mmc_sd_runtime_suspend, |
| 1284 | .runtime_resume = mmc_sd_runtime_resume, |
Adrian Hunter | 9feae24 | 2009-09-22 16:44:32 -0700 | [diff] [blame] | 1285 | .suspend = mmc_sd_suspend, |
| 1286 | .resume = mmc_sd_resume, |
Adrian Hunter | d304950 | 2011-11-28 16:22:00 +0200 | [diff] [blame] | 1287 | .alive = mmc_sd_alive, |
Ulf Hansson | 5992e78 | 2013-06-10 17:03:42 +0200 | [diff] [blame] | 1288 | .shutdown = mmc_sd_suspend, |
Johan Rudholm | dc0ecfe | 2015-01-12 15:38:06 +0100 | [diff] [blame] | 1289 | .reset = mmc_sd_reset, |
Adrian Hunter | 9feae24 | 2009-09-22 16:44:32 -0700 | [diff] [blame] | 1290 | }; |
| 1291 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1292 | /* |
| 1293 | * Starting point for SD card init. |
| 1294 | */ |
Andy Ross | 807e8e4 | 2011-01-03 10:36:56 -0800 | [diff] [blame] | 1295 | int mmc_attach_sd(struct mmc_host *host) |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1296 | { |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1297 | int err; |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1298 | u32 ocr, rocr; |
San Mehat | 0a3f562 | 2008-12-04 11:18:00 -0800 | [diff] [blame] | 1299 | #ifdef CONFIG_MMC_PARANOID_SD_INIT |
| 1300 | int retries; |
| 1301 | #endif |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1302 | |
| 1303 | BUG_ON(!host); |
Pierre Ossman | d84075c8 | 2007-08-09 13:23:56 +0200 | [diff] [blame] | 1304 | WARN_ON(!host->claimed); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1305 | |
Andy Ross | 807e8e4 | 2011-01-03 10:36:56 -0800 | [diff] [blame] | 1306 | err = mmc_send_app_op_cond(host, 0, &ocr); |
| 1307 | if (err) |
| 1308 | return err; |
| 1309 | |
Ulf Hansson | 2501c91 | 2013-10-30 01:00:18 +0100 | [diff] [blame] | 1310 | mmc_attach_bus(host, &mmc_sd_ops); |
Takashi Iwai | 8f230f4 | 2010-12-08 10:04:30 +0100 | [diff] [blame] | 1311 | if (host->ocr_avail_sd) |
| 1312 | host->ocr_avail = host->ocr_avail_sd; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1313 | |
Philip Langdale | 55556da | 2007-03-16 19:39:00 -0700 | [diff] [blame] | 1314 | /* |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1315 | * We need to get OCR a different way for SPI. |
| 1316 | */ |
| 1317 | if (mmc_host_is_spi(host)) { |
| 1318 | mmc_go_idle(host); |
| 1319 | |
| 1320 | err = mmc_spi_read_ocr(host, 0, &ocr); |
| 1321 | if (err) |
| 1322 | goto err; |
| 1323 | } |
| 1324 | |
Ulf Hansson | c7ed5c0 | 2019-08-27 10:10:43 +0200 | [diff] [blame] | 1325 | /* |
| 1326 | * Some SD cards claims an out of spec VDD voltage range. Let's treat |
| 1327 | * these bits as being in-valid and especially also bit7. |
| 1328 | */ |
| 1329 | ocr &= ~0x7FFF; |
| 1330 | |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1331 | rocr = mmc_select_voltage(host, ocr); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1332 | |
| 1333 | /* |
| 1334 | * Can we support the voltage(s) of the card(s)? |
| 1335 | */ |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1336 | if (!rocr) { |
Pierre Ossman | 109b5be | 2007-07-23 00:12:10 +0200 | [diff] [blame] | 1337 | err = -EINVAL; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1338 | goto err; |
Pierre Ossman | 109b5be | 2007-07-23 00:12:10 +0200 | [diff] [blame] | 1339 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1340 | |
| 1341 | /* |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1342 | * Detect and init the card. |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1343 | */ |
San Mehat | 0a3f562 | 2008-12-04 11:18:00 -0800 | [diff] [blame] | 1344 | #ifdef CONFIG_MMC_PARANOID_SD_INIT |
| 1345 | retries = 5; |
| 1346 | while (retries) { |
| 1347 | err = mmc_sd_init_card(host, rocr, NULL); |
| 1348 | if (err) { |
| 1349 | retries--; |
| 1350 | continue; |
| 1351 | } |
| 1352 | break; |
| 1353 | } |
| 1354 | |
| 1355 | if (!retries) { |
| 1356 | printk(KERN_ERR "%s: mmc_sd_init_card() failure (err = %d)\n", |
| 1357 | mmc_hostname(host), err); |
| 1358 | goto err; |
| 1359 | } |
| 1360 | #else |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1361 | err = mmc_sd_init_card(host, rocr, NULL); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 1362 | if (err) |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1363 | goto err; |
San Mehat | 0a3f562 | 2008-12-04 11:18:00 -0800 | [diff] [blame] | 1364 | #endif |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1365 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1366 | mmc_release_host(host); |
Pierre Ossman | 4101c16 | 2007-05-19 13:39:01 +0200 | [diff] [blame] | 1367 | err = mmc_add_card(host->card); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1368 | if (err) |
Pierre Ossman | 2986d0b | 2007-07-22 17:52:06 +0200 | [diff] [blame] | 1369 | goto remove_card; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1370 | |
Sergei Shtylyov | 2860d06 | 2015-10-14 23:53:03 +0300 | [diff] [blame] | 1371 | mmc_claim_host(host); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1372 | return 0; |
| 1373 | |
Pierre Ossman | 2986d0b | 2007-07-22 17:52:06 +0200 | [diff] [blame] | 1374 | remove_card: |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1375 | mmc_remove_card(host->card); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1376 | host->card = NULL; |
Pierre Ossman | 2986d0b | 2007-07-22 17:52:06 +0200 | [diff] [blame] | 1377 | mmc_claim_host(host); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1378 | err: |
| 1379 | mmc_detach_bus(host); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1380 | |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 1381 | pr_err("%s: error %d whilst initialising SD card\n", |
Pierre Ossman | 109b5be | 2007-07-23 00:12:10 +0200 | [diff] [blame] | 1382 | mmc_hostname(host), err); |
| 1383 | |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 1384 | return err; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1385 | } |