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/mmc.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 | * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. |
| 6 | * MMCv4 support Copyright (C) 2006 Philip Langdale, 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> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 14 | #include <linux/slab.h> |
Paul Gortmaker | 0205a90 | 2011-07-15 12:01:27 -0400 | [diff] [blame] | 15 | #include <linux/stat.h> |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 16 | #include <linux/pm_runtime.h> |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 17 | |
| 18 | #include <linux/mmc/host.h> |
| 19 | #include <linux/mmc/card.h> |
| 20 | #include <linux/mmc/mmc.h> |
| 21 | |
| 22 | #include "core.h" |
Pierre Ossman | 4101c16 | 2007-05-19 13:39:01 +0200 | [diff] [blame] | 23 | #include "bus.h" |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 24 | #include "mmc_ops.h" |
Philip Rakity | 4c4cb17 | 2011-05-13 11:17:18 +0530 | [diff] [blame] | 25 | #include "sd_ops.h" |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 26 | |
| 27 | static const unsigned int tran_exp[] = { |
| 28 | 10000, 100000, 1000000, 10000000, |
| 29 | 0, 0, 0, 0 |
| 30 | }; |
| 31 | |
| 32 | static const unsigned char tran_mant[] = { |
| 33 | 0, 10, 12, 13, 15, 20, 25, 30, |
| 34 | 35, 40, 45, 50, 55, 60, 70, 80, |
| 35 | }; |
| 36 | |
| 37 | static const unsigned int tacc_exp[] = { |
| 38 | 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, |
| 39 | }; |
| 40 | |
| 41 | static const unsigned int tacc_mant[] = { |
| 42 | 0, 10, 12, 13, 15, 20, 25, 30, |
| 43 | 35, 40, 45, 50, 55, 60, 70, 80, |
| 44 | }; |
| 45 | |
| 46 | #define UNSTUFF_BITS(resp,start,size) \ |
| 47 | ({ \ |
| 48 | const int __size = size; \ |
| 49 | const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ |
| 50 | const int __off = 3 - ((start) / 32); \ |
| 51 | const int __shft = (start) & 31; \ |
| 52 | u32 __res; \ |
| 53 | \ |
| 54 | __res = resp[__off] >> __shft; \ |
| 55 | if (__size + __shft > 32) \ |
| 56 | __res |= resp[__off-1] << ((32 - __shft) % 32); \ |
| 57 | __res & __mask; \ |
| 58 | }) |
| 59 | |
| 60 | /* |
| 61 | * Given the decoded CSD structure, decode the raw CID to our CID structure. |
| 62 | */ |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 63 | static int mmc_decode_cid(struct mmc_card *card) |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 64 | { |
| 65 | u32 *resp = card->raw_cid; |
| 66 | |
| 67 | /* |
| 68 | * The selection of the format here is based upon published |
| 69 | * specs from sandisk and from what people have reported. |
| 70 | */ |
| 71 | switch (card->csd.mmca_vsn) { |
| 72 | case 0: /* MMC v1.0 - v1.2 */ |
| 73 | case 1: /* MMC v1.4 */ |
| 74 | card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); |
| 75 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); |
| 76 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); |
| 77 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); |
| 78 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); |
| 79 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); |
| 80 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); |
| 81 | card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); |
| 82 | card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); |
| 83 | card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); |
| 84 | card->cid.serial = UNSTUFF_BITS(resp, 16, 24); |
| 85 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); |
| 86 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; |
| 87 | break; |
| 88 | |
| 89 | case 2: /* MMC v2.0 - v2.2 */ |
| 90 | case 3: /* MMC v3.1 - v3.3 */ |
| 91 | case 4: /* MMC v4 */ |
| 92 | card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); |
| 93 | card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); |
| 94 | card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); |
| 95 | card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); |
| 96 | card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); |
| 97 | card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); |
| 98 | card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); |
| 99 | card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); |
Bernie Thompson | 51e7e8b | 2013-02-27 12:19:17 -0800 | [diff] [blame] | 100 | card->cid.prv = UNSTUFF_BITS(resp, 48, 8); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 101 | card->cid.serial = UNSTUFF_BITS(resp, 16, 32); |
| 102 | card->cid.month = UNSTUFF_BITS(resp, 12, 4); |
| 103 | card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; |
| 104 | break; |
| 105 | |
| 106 | default: |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 107 | pr_err("%s: card has unknown MMCA version %d\n", |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 108 | mmc_hostname(card->host), card->csd.mmca_vsn); |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 109 | return -EINVAL; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 110 | } |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 111 | |
| 112 | return 0; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 113 | } |
| 114 | |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 115 | static void mmc_set_erase_size(struct mmc_card *card) |
| 116 | { |
| 117 | if (card->ext_csd.erase_group_def & 1) |
| 118 | card->erase_size = card->ext_csd.hc_erase_size; |
| 119 | else |
| 120 | card->erase_size = card->csd.erase_size; |
| 121 | |
| 122 | mmc_init_erase(card); |
| 123 | } |
| 124 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 125 | /* |
| 126 | * Given a 128-bit response, decode to our card CSD structure. |
| 127 | */ |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 128 | static int mmc_decode_csd(struct mmc_card *card) |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 129 | { |
| 130 | struct mmc_csd *csd = &card->csd; |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 131 | unsigned int e, m, a, b; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 132 | u32 *resp = card->raw_csd; |
| 133 | |
| 134 | /* |
| 135 | * We only understand CSD structure v1.1 and v1.2. |
| 136 | * v1.2 has extra information in bits 15, 11 and 10. |
Kyungmin Park | 6da24b7 | 2010-08-10 18:01:36 -0700 | [diff] [blame] | 137 | * We also support eMMC v4.4 & v4.41. |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 138 | */ |
Kyungmin Park | 6da24b7 | 2010-08-10 18:01:36 -0700 | [diff] [blame] | 139 | csd->structure = UNSTUFF_BITS(resp, 126, 2); |
| 140 | if (csd->structure == 0) { |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 141 | pr_err("%s: unrecognised CSD structure version %d\n", |
Kyungmin Park | 6da24b7 | 2010-08-10 18:01:36 -0700 | [diff] [blame] | 142 | mmc_hostname(card->host), csd->structure); |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 143 | return -EINVAL; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 144 | } |
| 145 | |
| 146 | csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); |
| 147 | m = UNSTUFF_BITS(resp, 115, 4); |
| 148 | e = UNSTUFF_BITS(resp, 112, 3); |
| 149 | csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; |
| 150 | csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; |
| 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); |
| 156 | |
| 157 | e = UNSTUFF_BITS(resp, 47, 3); |
| 158 | m = UNSTUFF_BITS(resp, 62, 12); |
| 159 | csd->capacity = (1 + m) << (e + 2); |
| 160 | |
| 161 | csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); |
| 162 | csd->read_partial = UNSTUFF_BITS(resp, 79, 1); |
| 163 | csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); |
| 164 | csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); |
| 165 | csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); |
| 166 | csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); |
| 167 | csd->write_partial = UNSTUFF_BITS(resp, 21, 1); |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 168 | |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 169 | if (csd->write_blkbits >= 9) { |
| 170 | a = UNSTUFF_BITS(resp, 42, 5); |
| 171 | b = UNSTUFF_BITS(resp, 37, 5); |
| 172 | csd->erase_size = (a + 1) * (b + 1); |
| 173 | csd->erase_size <<= csd->write_blkbits - 9; |
| 174 | } |
| 175 | |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 176 | return 0; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 177 | } |
| 178 | |
| 179 | /* |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 180 | * Read extended CSD. |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 181 | */ |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 182 | static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 183 | { |
| 184 | int err; |
| 185 | u8 *ext_csd; |
| 186 | |
| 187 | BUG_ON(!card); |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 188 | BUG_ON(!new_ext_csd); |
| 189 | |
| 190 | *new_ext_csd = NULL; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 191 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 192 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 193 | return 0; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 194 | |
| 195 | /* |
| 196 | * As the ext_csd is so large and mostly unused, we don't store the |
| 197 | * raw block in mmc_card. |
| 198 | */ |
| 199 | ext_csd = kmalloc(512, GFP_KERNEL); |
| 200 | if (!ext_csd) { |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 201 | pr_err("%s: could not allocate a buffer to " |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 202 | "receive the ext_csd.\n", mmc_hostname(card->host)); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 203 | return -ENOMEM; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 204 | } |
| 205 | |
| 206 | err = mmc_send_ext_csd(card, ext_csd); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 207 | if (err) { |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 208 | kfree(ext_csd); |
| 209 | *new_ext_csd = NULL; |
| 210 | |
Wolfgang Muees | d08ebed | 2009-09-22 16:45:26 -0700 | [diff] [blame] | 211 | /* If the host or the card can't do the switch, |
| 212 | * fail more gracefully. */ |
| 213 | if ((err != -EINVAL) |
| 214 | && (err != -ENOSYS) |
| 215 | && (err != -EFAULT)) |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 216 | return err; |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 217 | |
| 218 | /* |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 219 | * High capacity cards should have this "magic" size |
| 220 | * stored in their CSD. |
| 221 | */ |
| 222 | if (card->csd.capacity == (4096 * 512)) { |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 223 | pr_err("%s: unable to read EXT_CSD " |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 224 | "on a possible high capacity card. " |
| 225 | "Card will be ignored.\n", |
| 226 | mmc_hostname(card->host)); |
| 227 | } else { |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 228 | pr_warning("%s: unable to read " |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 229 | "EXT_CSD, performance might " |
| 230 | "suffer.\n", |
| 231 | mmc_hostname(card->host)); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 232 | err = 0; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 233 | } |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 234 | } else |
| 235 | *new_ext_csd = ext_csd; |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 236 | |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 237 | return err; |
| 238 | } |
| 239 | |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 240 | static void mmc_select_card_type(struct mmc_card *card) |
| 241 | { |
| 242 | struct mmc_host *host = card->host; |
| 243 | u8 card_type = card->ext_csd.raw_card_type & EXT_CSD_CARD_TYPE_MASK; |
Lee Jones | 5f1a4dd | 2012-11-14 12:35:51 +0000 | [diff] [blame] | 244 | u32 caps = host->caps, caps2 = host->caps2; |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 245 | unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 246 | unsigned int avail_type = 0; |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 247 | |
| 248 | if (caps & MMC_CAP_MMC_HIGHSPEED && |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 249 | card_type & EXT_CSD_CARD_TYPE_HS_26) { |
| 250 | hs_max_dtr = MMC_HIGH_26_MAX_DTR; |
| 251 | avail_type |= EXT_CSD_CARD_TYPE_HS_26; |
| 252 | } |
| 253 | |
| 254 | if (caps & MMC_CAP_MMC_HIGHSPEED && |
| 255 | card_type & EXT_CSD_CARD_TYPE_HS_52) { |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 256 | hs_max_dtr = MMC_HIGH_52_MAX_DTR; |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 257 | avail_type |= EXT_CSD_CARD_TYPE_HS_52; |
| 258 | } |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 259 | |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 260 | if (caps & MMC_CAP_1_8V_DDR && |
| 261 | card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 262 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 263 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; |
| 264 | } |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 265 | |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 266 | if (caps & MMC_CAP_1_2V_DDR && |
| 267 | card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { |
| 268 | hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; |
| 269 | avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; |
| 270 | } |
| 271 | |
| 272 | if (caps2 & MMC_CAP2_HS200_1_8V_SDR && |
| 273 | card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 274 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 275 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; |
| 276 | } |
| 277 | |
| 278 | if (caps2 & MMC_CAP2_HS200_1_2V_SDR && |
| 279 | card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 280 | hs200_max_dtr = MMC_HS200_MAX_DTR; |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 281 | avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; |
| 282 | } |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 283 | |
| 284 | card->ext_csd.hs_max_dtr = hs_max_dtr; |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 285 | card->ext_csd.hs200_max_dtr = hs200_max_dtr; |
Seungwon Jeon | 2415c0e | 2014-04-23 17:07:58 +0900 | [diff] [blame] | 286 | card->mmc_avail_type = avail_type; |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 287 | } |
| 288 | |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 289 | /* |
| 290 | * Decode extended CSD. |
| 291 | */ |
| 292 | static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) |
| 293 | { |
Namjae Jeon | e0c368d | 2011-10-06 23:41:38 +0900 | [diff] [blame] | 294 | int err = 0, idx; |
| 295 | unsigned int part_size; |
| 296 | u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 297 | |
| 298 | BUG_ON(!card); |
| 299 | |
| 300 | if (!ext_csd) |
| 301 | return 0; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 302 | |
Kyungmin Park | 6da24b7 | 2010-08-10 18:01:36 -0700 | [diff] [blame] | 303 | /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 304 | card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; |
Kyungmin Park | 6da24b7 | 2010-08-10 18:01:36 -0700 | [diff] [blame] | 305 | if (card->csd.structure == 3) { |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 306 | if (card->ext_csd.raw_ext_csd_structure > 2) { |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 307 | pr_err("%s: unrecognised EXT_CSD structure " |
Kyungmin Park | 6da24b7 | 2010-08-10 18:01:36 -0700 | [diff] [blame] | 308 | "version %d\n", mmc_hostname(card->host), |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 309 | card->ext_csd.raw_ext_csd_structure); |
Kyungmin Park | 6da24b7 | 2010-08-10 18:01:36 -0700 | [diff] [blame] | 310 | err = -EINVAL; |
| 311 | goto out; |
| 312 | } |
| 313 | } |
| 314 | |
Jarkko Lavinen | b1ebe38 | 2009-09-22 16:44:34 -0700 | [diff] [blame] | 315 | card->ext_csd.rev = ext_csd[EXT_CSD_REV]; |
Yuvaraj Kumar C D | 6636bad | 2013-05-21 15:08:43 +0530 | [diff] [blame] | 316 | if (card->ext_csd.rev > 7) { |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 317 | pr_err("%s: unrecognised EXT_CSD revision %d\n", |
Kyungmin Park | 6da24b7 | 2010-08-10 18:01:36 -0700 | [diff] [blame] | 318 | mmc_hostname(card->host), card->ext_csd.rev); |
Florin Malita | 00cedfa | 2007-10-13 12:27:20 -0400 | [diff] [blame] | 319 | err = -EINVAL; |
| 320 | goto out; |
Pierre Ossman | d7604d7 | 2007-07-23 00:34:07 +0200 | [diff] [blame] | 321 | } |
| 322 | |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 323 | card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; |
| 324 | card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; |
| 325 | card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; |
| 326 | card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; |
Jarkko Lavinen | b1ebe38 | 2009-09-22 16:44:34 -0700 | [diff] [blame] | 327 | if (card->ext_csd.rev >= 2) { |
Pierre Ossman | d7604d7 | 2007-07-23 00:34:07 +0200 | [diff] [blame] | 328 | card->ext_csd.sectors = |
| 329 | ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | |
| 330 | ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | |
| 331 | ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | |
| 332 | ext_csd[EXT_CSD_SEC_CNT + 3] << 24; |
Hanumath Prasad | fc8a098 | 2010-08-10 18:01:45 -0700 | [diff] [blame] | 333 | |
| 334 | /* Cards with density > 2GiB are sector addressed */ |
| 335 | if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) |
Pierre Ossman | d7604d7 | 2007-07-23 00:34:07 +0200 | [diff] [blame] | 336 | mmc_card_set_blockaddr(card); |
| 337 | } |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 338 | |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 339 | card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; |
Seungwon Jeon | 96cf5f0 | 2012-04-25 16:17:37 +0900 | [diff] [blame] | 340 | mmc_select_card_type(card); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 341 | |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 342 | card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
| 343 | card->ext_csd.raw_erase_timeout_mult = |
| 344 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; |
| 345 | card->ext_csd.raw_hc_erase_grp_size = |
| 346 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; |
Jarkko Lavinen | b1ebe38 | 2009-09-22 16:44:34 -0700 | [diff] [blame] | 347 | if (card->ext_csd.rev >= 3) { |
| 348 | u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; |
Andrei Warkentin | 371a689 | 2011-04-11 18:10:25 -0500 | [diff] [blame] | 349 | card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; |
| 350 | |
| 351 | /* EXT_CSD value is in units of 10ms, but we store in ms */ |
| 352 | card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; |
Jarkko Lavinen | b1ebe38 | 2009-09-22 16:44:34 -0700 | [diff] [blame] | 353 | |
| 354 | /* Sleep / awake timeout in 100ns units */ |
| 355 | if (sa_shift > 0 && sa_shift <= 0x17) |
| 356 | card->ext_csd.sa_timeout = |
| 357 | 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 358 | card->ext_csd.erase_group_def = |
| 359 | ext_csd[EXT_CSD_ERASE_GROUP_DEF]; |
| 360 | card->ext_csd.hc_erase_timeout = 300 * |
| 361 | ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; |
| 362 | card->ext_csd.hc_erase_size = |
| 363 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; |
Andrei Warkentin | f4c5522 | 2011-03-31 18:40:00 -0500 | [diff] [blame] | 364 | |
| 365 | card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; |
Andrei Warkentin | 371a689 | 2011-04-11 18:10:25 -0500 | [diff] [blame] | 366 | |
| 367 | /* |
| 368 | * There are two boot regions of equal size, defined in |
| 369 | * multiples of 128K. |
| 370 | */ |
Namjae Jeon | e0c368d | 2011-10-06 23:41:38 +0900 | [diff] [blame] | 371 | if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { |
| 372 | for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { |
| 373 | part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; |
| 374 | mmc_part_add(card, part_size, |
| 375 | EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, |
Johan Rudholm | add710e | 2011-12-02 08:51:06 +0100 | [diff] [blame] | 376 | "boot%d", idx, true, |
| 377 | MMC_BLK_DATA_AREA_BOOT); |
Namjae Jeon | e0c368d | 2011-10-06 23:41:38 +0900 | [diff] [blame] | 378 | } |
| 379 | } |
Jarkko Lavinen | b1ebe38 | 2009-09-22 16:44:34 -0700 | [diff] [blame] | 380 | } |
| 381 | |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 382 | card->ext_csd.raw_hc_erase_gap_size = |
Jurgen Heeks | dd13b4e | 2012-02-01 13:30:55 +0100 | [diff] [blame] | 383 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 384 | card->ext_csd.raw_sec_trim_mult = |
| 385 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; |
| 386 | card->ext_csd.raw_sec_erase_mult = |
| 387 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; |
| 388 | card->ext_csd.raw_sec_feature_support = |
| 389 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; |
| 390 | card->ext_csd.raw_trim_mult = |
| 391 | ext_csd[EXT_CSD_TRIM_MULT]; |
Philip Rakity | 836dc2f | 2013-04-04 20:18:11 +0100 | [diff] [blame] | 392 | card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 393 | if (card->ext_csd.rev >= 4) { |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 394 | /* |
| 395 | * Enhanced area feature support -- check whether the eMMC |
| 396 | * card has the Enhanced area enabled. If so, export enhanced |
| 397 | * area offset and size to user by adding sysfs interface. |
| 398 | */ |
| 399 | if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 400 | (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { |
Namjae Jeon | e0c368d | 2011-10-06 23:41:38 +0900 | [diff] [blame] | 401 | hc_erase_grp_sz = |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 402 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; |
Namjae Jeon | e0c368d | 2011-10-06 23:41:38 +0900 | [diff] [blame] | 403 | hc_wp_grp_sz = |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 404 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
| 405 | |
| 406 | card->ext_csd.enhanced_area_en = 1; |
| 407 | /* |
| 408 | * calculate the enhanced data area offset, in bytes |
| 409 | */ |
| 410 | card->ext_csd.enhanced_area_offset = |
| 411 | (ext_csd[139] << 24) + (ext_csd[138] << 16) + |
| 412 | (ext_csd[137] << 8) + ext_csd[136]; |
| 413 | if (mmc_card_blockaddr(card)) |
| 414 | card->ext_csd.enhanced_area_offset <<= 9; |
| 415 | /* |
| 416 | * calculate the enhanced data area size, in kilobytes |
| 417 | */ |
| 418 | card->ext_csd.enhanced_area_size = |
| 419 | (ext_csd[142] << 16) + (ext_csd[141] << 8) + |
| 420 | ext_csd[140]; |
| 421 | card->ext_csd.enhanced_area_size *= |
| 422 | (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); |
| 423 | card->ext_csd.enhanced_area_size <<= 9; |
| 424 | } else { |
| 425 | /* |
| 426 | * If the enhanced area is not enabled, disable these |
| 427 | * device attributes. |
| 428 | */ |
| 429 | card->ext_csd.enhanced_area_offset = -EINVAL; |
| 430 | card->ext_csd.enhanced_area_size = -EINVAL; |
| 431 | } |
Namjae Jeon | e0c368d | 2011-10-06 23:41:38 +0900 | [diff] [blame] | 432 | |
| 433 | /* |
| 434 | * General purpose partition feature support -- |
| 435 | * If ext_csd has the size of general purpose partitions, |
| 436 | * set size, part_cfg, partition name in mmc_part. |
| 437 | */ |
| 438 | if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & |
| 439 | EXT_CSD_PART_SUPPORT_PART_EN) { |
| 440 | if (card->ext_csd.enhanced_area_en != 1) { |
| 441 | hc_erase_grp_sz = |
| 442 | ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; |
| 443 | hc_wp_grp_sz = |
| 444 | ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; |
| 445 | |
| 446 | card->ext_csd.enhanced_area_en = 1; |
| 447 | } |
| 448 | |
| 449 | for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { |
| 450 | if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && |
| 451 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && |
| 452 | !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) |
| 453 | continue; |
| 454 | part_size = |
| 455 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] |
| 456 | << 16) + |
| 457 | (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] |
| 458 | << 8) + |
| 459 | ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; |
| 460 | part_size *= (size_t)(hc_erase_grp_sz * |
| 461 | hc_wp_grp_sz); |
| 462 | mmc_part_add(card, part_size << 19, |
| 463 | EXT_CSD_PART_CONFIG_ACC_GP0 + idx, |
Johan Rudholm | add710e | 2011-12-02 08:51:06 +0100 | [diff] [blame] | 464 | "gp%d", idx, false, |
| 465 | MMC_BLK_DATA_AREA_GP); |
Namjae Jeon | e0c368d | 2011-10-06 23:41:38 +0900 | [diff] [blame] | 466 | } |
| 467 | } |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 468 | card->ext_csd.sec_trim_mult = |
| 469 | ext_csd[EXT_CSD_SEC_TRIM_MULT]; |
| 470 | card->ext_csd.sec_erase_mult = |
| 471 | ext_csd[EXT_CSD_SEC_ERASE_MULT]; |
| 472 | card->ext_csd.sec_feature_support = |
| 473 | ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; |
| 474 | card->ext_csd.trim_timeout = 300 * |
| 475 | ext_csd[EXT_CSD_TRIM_MULT]; |
Johan Rudholm | add710e | 2011-12-02 08:51:06 +0100 | [diff] [blame] | 476 | |
| 477 | /* |
| 478 | * Note that the call to mmc_part_add above defaults to read |
| 479 | * only. If this default assumption is changed, the call must |
| 480 | * take into account the value of boot_locked below. |
| 481 | */ |
| 482 | card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; |
| 483 | card->ext_csd.boot_ro_lockable = true; |
Fredrik Soderstedt | 6044371 | 2013-04-23 16:27:07 +0200 | [diff] [blame] | 484 | |
| 485 | /* Save power class values */ |
| 486 | card->ext_csd.raw_pwr_cl_52_195 = |
| 487 | ext_csd[EXT_CSD_PWR_CL_52_195]; |
| 488 | card->ext_csd.raw_pwr_cl_26_195 = |
| 489 | ext_csd[EXT_CSD_PWR_CL_26_195]; |
| 490 | card->ext_csd.raw_pwr_cl_52_360 = |
| 491 | ext_csd[EXT_CSD_PWR_CL_52_360]; |
| 492 | card->ext_csd.raw_pwr_cl_26_360 = |
| 493 | ext_csd[EXT_CSD_PWR_CL_26_360]; |
| 494 | card->ext_csd.raw_pwr_cl_200_195 = |
| 495 | ext_csd[EXT_CSD_PWR_CL_200_195]; |
| 496 | card->ext_csd.raw_pwr_cl_200_360 = |
| 497 | ext_csd[EXT_CSD_PWR_CL_200_360]; |
| 498 | card->ext_csd.raw_pwr_cl_ddr_52_195 = |
| 499 | ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; |
| 500 | card->ext_csd.raw_pwr_cl_ddr_52_360 = |
| 501 | ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 502 | } |
| 503 | |
Adrian Hunter | b249951 | 2011-08-29 16:42:11 +0300 | [diff] [blame] | 504 | if (card->ext_csd.rev >= 5) { |
Romain Izard | 7c4f10a | 2013-06-14 14:25:44 +0200 | [diff] [blame] | 505 | /* Adjust production date as per JEDEC JESD84-B451 */ |
| 506 | if (card->cid.year < 2010) |
| 507 | card->cid.year += 16; |
| 508 | |
Jaehoon Chung | 950d56a | 2012-09-17 08:42:02 +0000 | [diff] [blame] | 509 | /* check whether the eMMC card supports BKOPS */ |
| 510 | if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { |
| 511 | card->ext_csd.bkops = 1; |
| 512 | card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN]; |
| 513 | card->ext_csd.raw_bkops_status = |
| 514 | ext_csd[EXT_CSD_BKOPS_STATUS]; |
| 515 | if (!card->ext_csd.bkops_en) |
| 516 | pr_info("%s: BKOPS_EN bit is not set\n", |
| 517 | mmc_hostname(card->host)); |
| 518 | } |
| 519 | |
Jaehoon Chung | eb0d8f1 | 2011-10-18 01:26:42 -0400 | [diff] [blame] | 520 | /* check whether the eMMC card supports HPI */ |
| 521 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { |
| 522 | card->ext_csd.hpi = 1; |
| 523 | if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) |
| 524 | card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; |
| 525 | else |
| 526 | card->ext_csd.hpi_cmd = MMC_SEND_STATUS; |
| 527 | /* |
| 528 | * Indicate the maximum timeout to close |
| 529 | * a command interrupted by HPI |
| 530 | */ |
| 531 | card->ext_csd.out_of_int_time = |
| 532 | ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; |
| 533 | } |
| 534 | |
Andrei Warkentin | f4c5522 | 2011-03-31 18:40:00 -0500 | [diff] [blame] | 535 | card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; |
Adrian Hunter | b249951 | 2011-08-29 16:42:11 +0300 | [diff] [blame] | 536 | card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; |
Loic Pallardy | 090d25f | 2012-11-17 18:08:24 -0500 | [diff] [blame] | 537 | |
| 538 | /* |
| 539 | * RPMB regions are defined in multiples of 128K. |
| 540 | */ |
| 541 | card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; |
Balaji T K | d0123cc | 2013-01-25 17:00:30 +0530 | [diff] [blame] | 542 | if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { |
Loic Pallardy | 090d25f | 2012-11-17 18:08:24 -0500 | [diff] [blame] | 543 | mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, |
| 544 | EXT_CSD_PART_CONFIG_ACC_RPMB, |
| 545 | "rpmb", 0, false, |
| 546 | MMC_BLK_DATA_AREA_RPMB); |
| 547 | } |
Adrian Hunter | b249951 | 2011-08-29 16:42:11 +0300 | [diff] [blame] | 548 | } |
Andrei Warkentin | f4c5522 | 2011-03-31 18:40:00 -0500 | [diff] [blame] | 549 | |
Andrei Warkentin | 5238acb | 2011-09-24 12:12:30 -0400 | [diff] [blame] | 550 | card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 551 | if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) |
| 552 | card->erased_byte = 0xFF; |
| 553 | else |
| 554 | card->erased_byte = 0x0; |
| 555 | |
Seungwon Jeon | 336c716 | 2011-10-25 09:43:12 +0900 | [diff] [blame] | 556 | /* eMMC v4.5 or later */ |
Girish K S | bec8726 | 2011-10-13 12:04:16 +0530 | [diff] [blame] | 557 | if (card->ext_csd.rev >= 6) { |
Seungwon Jeon | 336c716 | 2011-10-25 09:43:12 +0900 | [diff] [blame] | 558 | card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; |
| 559 | |
Seungwon Jeon | b23cf0b | 2011-09-23 14:15:29 +0900 | [diff] [blame] | 560 | card->ext_csd.generic_cmd6_time = 10 * |
| 561 | ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; |
Girish K S | bec8726 | 2011-10-13 12:04:16 +0530 | [diff] [blame] | 562 | card->ext_csd.power_off_longtime = 10 * |
| 563 | ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; |
Seungwon Jeon | b23cf0b | 2011-09-23 14:15:29 +0900 | [diff] [blame] | 564 | |
Seungwon Jeon | 336c716 | 2011-10-25 09:43:12 +0900 | [diff] [blame] | 565 | card->ext_csd.cache_size = |
| 566 | ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | |
| 567 | ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | |
| 568 | ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | |
| 569 | ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; |
Saugata Das | 4265900 | 2011-12-21 13:09:17 +0530 | [diff] [blame] | 570 | |
| 571 | if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) |
| 572 | card->ext_csd.data_sector_size = 4096; |
| 573 | else |
| 574 | card->ext_csd.data_sector_size = 512; |
| 575 | |
| 576 | if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && |
| 577 | (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { |
| 578 | card->ext_csd.data_tag_unit_size = |
| 579 | ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * |
| 580 | (card->ext_csd.data_sector_size); |
| 581 | } else { |
| 582 | card->ext_csd.data_tag_unit_size = 0; |
| 583 | } |
Seungwon Jeon | abd9ac1 | 2013-02-06 17:01:43 +0900 | [diff] [blame] | 584 | |
| 585 | card->ext_csd.max_packed_writes = |
| 586 | ext_csd[EXT_CSD_MAX_PACKED_WRITES]; |
| 587 | card->ext_csd.max_packed_reads = |
| 588 | ext_csd[EXT_CSD_MAX_PACKED_READS]; |
Saugata Das | a5075eb | 2012-05-17 16:32:21 +0530 | [diff] [blame] | 589 | } else { |
| 590 | card->ext_csd.data_sector_size = 512; |
Seungwon Jeon | 336c716 | 2011-10-25 09:43:12 +0900 | [diff] [blame] | 591 | } |
Seungwon Jeon | 881d1c2 | 2011-10-14 14:03:21 +0900 | [diff] [blame] | 592 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 593 | out: |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 594 | return err; |
| 595 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 596 | |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 597 | static inline void mmc_free_ext_csd(u8 *ext_csd) |
| 598 | { |
| 599 | kfree(ext_csd); |
| 600 | } |
| 601 | |
| 602 | |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 603 | static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 604 | { |
| 605 | u8 *bw_ext_csd; |
| 606 | int err; |
| 607 | |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 608 | if (bus_width == MMC_BUS_WIDTH_1) |
| 609 | return 0; |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 610 | |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 611 | err = mmc_get_ext_csd(card, &bw_ext_csd); |
| 612 | |
| 613 | if (err || bw_ext_csd == NULL) { |
Philippe De Swert | f6f4459 | 2012-04-11 23:32:05 +0300 | [diff] [blame] | 614 | err = -EINVAL; |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 615 | goto out; |
| 616 | } |
| 617 | |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 618 | /* only compare read only fields */ |
Jurgen Heeks | dd13b4e | 2012-02-01 13:30:55 +0100 | [diff] [blame] | 619 | err = !((card->ext_csd.raw_partition_support == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 620 | bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 621 | (card->ext_csd.raw_erased_mem_count == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 622 | bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 623 | (card->ext_csd.rev == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 624 | bw_ext_csd[EXT_CSD_REV]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 625 | (card->ext_csd.raw_ext_csd_structure == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 626 | bw_ext_csd[EXT_CSD_STRUCTURE]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 627 | (card->ext_csd.raw_card_type == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 628 | bw_ext_csd[EXT_CSD_CARD_TYPE]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 629 | (card->ext_csd.raw_s_a_timeout == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 630 | bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 631 | (card->ext_csd.raw_hc_erase_gap_size == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 632 | bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 633 | (card->ext_csd.raw_erase_timeout_mult == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 634 | bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 635 | (card->ext_csd.raw_hc_erase_grp_size == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 636 | bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 637 | (card->ext_csd.raw_sec_trim_mult == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 638 | bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 639 | (card->ext_csd.raw_sec_erase_mult == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 640 | bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 641 | (card->ext_csd.raw_sec_feature_support == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 642 | bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 643 | (card->ext_csd.raw_trim_mult == |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 644 | bw_ext_csd[EXT_CSD_TRIM_MULT]) && |
Philip Rakity | f39b2dd9 | 2011-07-07 09:04:55 -0700 | [diff] [blame] | 645 | (card->ext_csd.raw_sectors[0] == |
| 646 | bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && |
| 647 | (card->ext_csd.raw_sectors[1] == |
| 648 | bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && |
| 649 | (card->ext_csd.raw_sectors[2] == |
| 650 | bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && |
| 651 | (card->ext_csd.raw_sectors[3] == |
Fredrik Soderstedt | 6044371 | 2013-04-23 16:27:07 +0200 | [diff] [blame] | 652 | bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && |
| 653 | (card->ext_csd.raw_pwr_cl_52_195 == |
| 654 | bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && |
| 655 | (card->ext_csd.raw_pwr_cl_26_195 == |
| 656 | bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && |
| 657 | (card->ext_csd.raw_pwr_cl_52_360 == |
| 658 | bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && |
| 659 | (card->ext_csd.raw_pwr_cl_26_360 == |
| 660 | bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && |
| 661 | (card->ext_csd.raw_pwr_cl_200_195 == |
| 662 | bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && |
| 663 | (card->ext_csd.raw_pwr_cl_200_360 == |
| 664 | bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && |
| 665 | (card->ext_csd.raw_pwr_cl_ddr_52_195 == |
| 666 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && |
| 667 | (card->ext_csd.raw_pwr_cl_ddr_52_360 == |
| 668 | bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360])); |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 669 | if (err) |
| 670 | err = -EINVAL; |
| 671 | |
| 672 | out: |
| 673 | mmc_free_ext_csd(bw_ext_csd); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 674 | return err; |
| 675 | } |
| 676 | |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 677 | MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], |
| 678 | card->raw_cid[2], card->raw_cid[3]); |
| 679 | MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], |
| 680 | card->raw_csd[2], card->raw_csd[3]); |
| 681 | 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] | 682 | MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); |
| 683 | MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 684 | MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); |
| 685 | MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); |
| 686 | MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); |
| 687 | MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); |
| 688 | MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); |
Bernie Thompson | 51e7e8b | 2013-02-27 12:19:17 -0800 | [diff] [blame] | 689 | MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 690 | MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 691 | MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", |
| 692 | card->ext_csd.enhanced_area_offset); |
| 693 | MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); |
Loic Pallardy | 188cc04 | 2012-08-06 17:12:29 +0200 | [diff] [blame] | 694 | MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); |
| 695 | MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 696 | |
| 697 | static struct attribute *mmc_std_attrs[] = { |
| 698 | &dev_attr_cid.attr, |
| 699 | &dev_attr_csd.attr, |
| 700 | &dev_attr_date.attr, |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 701 | &dev_attr_erase_size.attr, |
| 702 | &dev_attr_preferred_erase_size.attr, |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 703 | &dev_attr_fwrev.attr, |
| 704 | &dev_attr_hwrev.attr, |
| 705 | &dev_attr_manfid.attr, |
| 706 | &dev_attr_name.attr, |
| 707 | &dev_attr_oemid.attr, |
Bernie Thompson | 51e7e8b | 2013-02-27 12:19:17 -0800 | [diff] [blame] | 708 | &dev_attr_prv.attr, |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 709 | &dev_attr_serial.attr, |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 710 | &dev_attr_enhanced_area_offset.attr, |
| 711 | &dev_attr_enhanced_area_size.attr, |
Loic Pallardy | 188cc04 | 2012-08-06 17:12:29 +0200 | [diff] [blame] | 712 | &dev_attr_raw_rpmb_size_mult.attr, |
| 713 | &dev_attr_rel_sectors.attr, |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 714 | NULL, |
| 715 | }; |
Axel Lin | d1e5821 | 2014-03-08 15:05:27 +0800 | [diff] [blame] | 716 | ATTRIBUTE_GROUPS(mmc_std); |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 717 | |
| 718 | static struct device_type mmc_type = { |
Axel Lin | d1e5821 | 2014-03-08 15:05:27 +0800 | [diff] [blame] | 719 | .groups = mmc_std_groups, |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 720 | }; |
| 721 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 722 | /* |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 723 | * Select the PowerClass for the current bus width |
| 724 | * If power class is defined for 4/8 bit bus in the |
| 725 | * extended CSD register, select it by executing the |
| 726 | * mmc_switch command. |
| 727 | */ |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 728 | static int __mmc_select_powerclass(struct mmc_card *card, |
| 729 | unsigned int bus_width) |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 730 | { |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 731 | struct mmc_host *host = card->host; |
| 732 | struct mmc_ext_csd *ext_csd = &card->ext_csd; |
Fredrik Soderstedt | 6044371 | 2013-04-23 16:27:07 +0200 | [diff] [blame] | 733 | unsigned int pwrclass_val = 0; |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 734 | int err = 0; |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 735 | |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 736 | /* Power class selection is supported for versions >= 4.0 */ |
| 737 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) |
| 738 | return 0; |
| 739 | |
| 740 | /* Power class values are defined only for 4/8 bit bus */ |
| 741 | if (bus_width == EXT_CSD_BUS_WIDTH_1) |
| 742 | return 0; |
| 743 | |
| 744 | switch (1 << host->ios.vdd) { |
| 745 | case MMC_VDD_165_195: |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 746 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
| 747 | pwrclass_val = ext_csd->raw_pwr_cl_26_195; |
| 748 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) |
Fredrik Soderstedt | 6044371 | 2013-04-23 16:27:07 +0200 | [diff] [blame] | 749 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 750 | ext_csd->raw_pwr_cl_52_195 : |
| 751 | ext_csd->raw_pwr_cl_ddr_52_195; |
| 752 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) |
| 753 | pwrclass_val = ext_csd->raw_pwr_cl_200_195; |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 754 | break; |
Subhash Jadavani | 93fc5a4 | 2012-04-03 12:25:58 +0530 | [diff] [blame] | 755 | case MMC_VDD_27_28: |
| 756 | case MMC_VDD_28_29: |
| 757 | case MMC_VDD_29_30: |
| 758 | case MMC_VDD_30_31: |
| 759 | case MMC_VDD_31_32: |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 760 | case MMC_VDD_32_33: |
| 761 | case MMC_VDD_33_34: |
| 762 | case MMC_VDD_34_35: |
| 763 | case MMC_VDD_35_36: |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 764 | if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) |
| 765 | pwrclass_val = ext_csd->raw_pwr_cl_26_360; |
| 766 | else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) |
Fredrik Soderstedt | 6044371 | 2013-04-23 16:27:07 +0200 | [diff] [blame] | 767 | pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 768 | ext_csd->raw_pwr_cl_52_360 : |
| 769 | ext_csd->raw_pwr_cl_ddr_52_360; |
| 770 | else if (host->ios.clock <= MMC_HS200_MAX_DTR) |
| 771 | pwrclass_val = ext_csd->raw_pwr_cl_200_360; |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 772 | break; |
| 773 | default: |
| 774 | pr_warning("%s: Voltage range not supported " |
| 775 | "for power class.\n", mmc_hostname(host)); |
| 776 | return -EINVAL; |
| 777 | } |
| 778 | |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 779 | if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) |
| 780 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> |
| 781 | EXT_CSD_PWR_CL_8BIT_SHIFT; |
| 782 | else |
| 783 | pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> |
| 784 | EXT_CSD_PWR_CL_4BIT_SHIFT; |
| 785 | |
| 786 | /* If the power class is different from the default value */ |
| 787 | if (pwrclass_val > 0) { |
| 788 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 789 | EXT_CSD_POWER_CLASS, |
| 790 | pwrclass_val, |
Seungwon Jeon | 71fe3eb | 2011-10-18 13:20:57 +0900 | [diff] [blame] | 791 | card->ext_csd.generic_cmd6_time); |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 792 | } |
| 793 | |
| 794 | return err; |
| 795 | } |
| 796 | |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 797 | static int mmc_select_powerclass(struct mmc_card *card) |
| 798 | { |
| 799 | struct mmc_host *host = card->host; |
| 800 | u32 bus_width, ext_csd_bits; |
| 801 | int err, ddr; |
| 802 | |
| 803 | /* Power class selection is supported for versions >= 4.0 */ |
| 804 | if (card->csd.mmca_vsn < CSD_SPEC_VER_4) |
| 805 | return 0; |
| 806 | |
| 807 | bus_width = host->ios.bus_width; |
| 808 | /* Power class values are defined only for 4/8 bit bus */ |
| 809 | if (bus_width == MMC_BUS_WIDTH_1) |
| 810 | return 0; |
| 811 | |
| 812 | ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; |
| 813 | if (ddr) |
| 814 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? |
| 815 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; |
| 816 | else |
| 817 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? |
| 818 | EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; |
| 819 | |
| 820 | err = __mmc_select_powerclass(card, ext_csd_bits); |
| 821 | if (err) |
| 822 | pr_warn("%s: power class selection to bus width %d ddr %d failed\n", |
| 823 | mmc_hostname(host), 1 << bus_width, ddr); |
| 824 | |
| 825 | return err; |
| 826 | } |
| 827 | |
Girish K S | b87d8db | 2011-09-23 20:41:47 +0530 | [diff] [blame] | 828 | /* |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 829 | * Set the bus speed for the selected speed mode. |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 830 | */ |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 831 | static void mmc_set_bus_speed(struct mmc_card *card) |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 832 | { |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 833 | unsigned int max_dtr = (unsigned int)-1; |
| 834 | |
| 835 | if (mmc_card_hs200(card) && max_dtr > card->ext_csd.hs200_max_dtr) |
| 836 | max_dtr = card->ext_csd.hs200_max_dtr; |
| 837 | else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) |
| 838 | max_dtr = card->ext_csd.hs_max_dtr; |
| 839 | else if (max_dtr > card->csd.max_dtr) |
| 840 | max_dtr = card->csd.max_dtr; |
| 841 | |
| 842 | mmc_set_clock(card->host, max_dtr); |
| 843 | } |
| 844 | |
| 845 | /* |
| 846 | * Select the bus width amoung 4-bit and 8-bit(SDR). |
| 847 | * If the bus width is changed successfully, return the selected width value. |
| 848 | * Zero is returned instead of error value if the wide width is not supported. |
| 849 | */ |
| 850 | static int mmc_select_bus_width(struct mmc_card *card) |
| 851 | { |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 852 | static unsigned ext_csd_bits[] = { |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 853 | EXT_CSD_BUS_WIDTH_8, |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 854 | EXT_CSD_BUS_WIDTH_4, |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 855 | }; |
| 856 | static unsigned bus_widths[] = { |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 857 | MMC_BUS_WIDTH_8, |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 858 | MMC_BUS_WIDTH_4, |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 859 | }; |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 860 | struct mmc_host *host = card->host; |
| 861 | unsigned idx, bus_width = 0; |
| 862 | int err = 0; |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 863 | |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 864 | if ((card->csd.mmca_vsn < CSD_SPEC_VER_4) && |
| 865 | !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) |
| 866 | return 0; |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 867 | |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 868 | idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 869 | |
| 870 | /* |
| 871 | * Unlike SD, MMC cards dont have a configuration register to notify |
| 872 | * supported bus width. So bus test command should be run to identify |
| 873 | * the supported bus width or compare the ext csd values of current |
| 874 | * bus width and ext csd values of 1 bit mode read earlier. |
| 875 | */ |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 876 | for (; idx < ARRAY_SIZE(bus_widths); idx++) { |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 877 | /* |
| 878 | * Host is capable of 8bit transfer, then switch |
| 879 | * the device to work in 8bit transfer mode. If the |
| 880 | * mmc switch command returns error then switch to |
| 881 | * 4bit transfer mode. On success set the corresponding |
| 882 | * bus width on the host. |
| 883 | */ |
| 884 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 885 | EXT_CSD_BUS_WIDTH, |
| 886 | ext_csd_bits[idx], |
| 887 | card->ext_csd.generic_cmd6_time); |
| 888 | if (err) |
| 889 | continue; |
| 890 | |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 891 | bus_width = bus_widths[idx]; |
| 892 | mmc_set_bus_width(host, bus_width); |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 893 | |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 894 | /* |
| 895 | * If controller can't handle bus width test, |
| 896 | * compare ext_csd previously read in 1 bit mode |
| 897 | * against ext_csd at new bus width |
| 898 | */ |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 899 | if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 900 | err = mmc_compare_ext_csds(card, bus_width); |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 901 | else |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 902 | err = mmc_bus_test(card, bus_width); |
| 903 | |
| 904 | if (!err) { |
| 905 | err = bus_width; |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 906 | break; |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 907 | } else { |
| 908 | pr_warn("%s: switch to bus width %d failed\n", |
| 909 | mmc_hostname(host), ext_csd_bits[idx]); |
| 910 | } |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 911 | } |
| 912 | |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 913 | return err; |
| 914 | } |
| 915 | |
| 916 | /* |
| 917 | * Switch to the high-speed mode |
| 918 | */ |
| 919 | static int mmc_select_hs(struct mmc_card *card) |
| 920 | { |
| 921 | int err; |
| 922 | |
| 923 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 924 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, |
| 925 | card->ext_csd.generic_cmd6_time, |
| 926 | true, true, true); |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 927 | if (!err) |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 928 | mmc_set_timing(card->host, MMC_TIMING_MMC_HS); |
| 929 | |
| 930 | return err; |
| 931 | } |
| 932 | |
| 933 | /* |
| 934 | * Activate wide bus and DDR if supported. |
| 935 | */ |
| 936 | static int mmc_select_hs_ddr(struct mmc_card *card) |
| 937 | { |
| 938 | struct mmc_host *host = card->host; |
| 939 | u32 bus_width, ext_csd_bits; |
| 940 | int err = 0; |
| 941 | |
| 942 | if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) |
| 943 | return 0; |
| 944 | |
| 945 | bus_width = host->ios.bus_width; |
| 946 | if (bus_width == MMC_BUS_WIDTH_1) |
| 947 | return 0; |
| 948 | |
| 949 | ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? |
| 950 | EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; |
| 951 | |
| 952 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 953 | EXT_CSD_BUS_WIDTH, |
| 954 | ext_csd_bits, |
| 955 | card->ext_csd.generic_cmd6_time); |
| 956 | if (err) { |
| 957 | pr_warn("%s: switch to bus width %d ddr failed\n", |
| 958 | mmc_hostname(host), 1 << bus_width); |
| 959 | return err; |
| 960 | } |
| 961 | |
| 962 | /* |
| 963 | * eMMC cards can support 3.3V to 1.2V i/o (vccq) |
| 964 | * signaling. |
| 965 | * |
| 966 | * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. |
| 967 | * |
| 968 | * 1.8V vccq at 3.3V core voltage (vcc) is not required |
| 969 | * in the JEDEC spec for DDR. |
| 970 | * |
| 971 | * Do not force change in vccq since we are obviously |
| 972 | * working and no change to vccq is needed. |
| 973 | * |
| 974 | * WARNING: eMMC rules are NOT the same as SD DDR |
| 975 | */ |
| 976 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { |
| 977 | err = __mmc_set_signal_voltage(host, |
| 978 | MMC_SIGNAL_VOLTAGE_120); |
| 979 | if (err) |
| 980 | return err; |
| 981 | } |
| 982 | |
| 983 | mmc_set_timing(host, MMC_TIMING_MMC_DDR52); |
| 984 | |
| 985 | return err; |
| 986 | } |
| 987 | |
| 988 | /* |
| 989 | * For device supporting HS200 mode, the following sequence |
| 990 | * should be done before executing the tuning process. |
| 991 | * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) |
| 992 | * 2. switch to HS200 mode |
| 993 | * 3. set the clock to > 52Mhz and <=200MHz |
| 994 | */ |
| 995 | static int mmc_select_hs200(struct mmc_card *card) |
| 996 | { |
| 997 | struct mmc_host *host = card->host; |
| 998 | int err = -EINVAL; |
| 999 | |
| 1000 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) |
| 1001 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); |
| 1002 | |
| 1003 | if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) |
| 1004 | err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); |
| 1005 | |
| 1006 | /* If fails try again during next card power cycle */ |
| 1007 | if (err) |
| 1008 | goto err; |
| 1009 | |
| 1010 | /* |
| 1011 | * Set the bus width(4 or 8) with host's support and |
| 1012 | * switch to HS200 mode if bus width is set successfully. |
| 1013 | */ |
| 1014 | err = mmc_select_bus_width(card); |
| 1015 | if (!IS_ERR_VALUE(err)) { |
Ulf Hansson | 4509f8477 | 2014-01-08 16:09:33 +0100 | [diff] [blame] | 1016 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 1017 | EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS200, |
| 1018 | card->ext_csd.generic_cmd6_time, |
| 1019 | true, true, true); |
| 1020 | if (!err) |
| 1021 | mmc_set_timing(host, MMC_TIMING_MMC_HS200); |
| 1022 | } |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1023 | err: |
| 1024 | return err; |
| 1025 | } |
| 1026 | |
| 1027 | /* |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 1028 | * Activate High Speed or HS200 mode if supported. |
| 1029 | */ |
| 1030 | static int mmc_select_timing(struct mmc_card *card) |
| 1031 | { |
| 1032 | int err = 0; |
| 1033 | |
| 1034 | if ((card->csd.mmca_vsn < CSD_SPEC_VER_4 && |
| 1035 | card->ext_csd.hs_max_dtr == 0)) |
| 1036 | goto bus_speed; |
| 1037 | |
| 1038 | if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) |
| 1039 | err = mmc_select_hs200(card); |
| 1040 | else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) |
| 1041 | err = mmc_select_hs(card); |
| 1042 | |
| 1043 | if (err && err != -EBADMSG) |
| 1044 | return err; |
| 1045 | |
| 1046 | if (err) { |
| 1047 | pr_warn("%s: switch to %s failed\n", |
| 1048 | mmc_card_hs(card) ? "high-speed" : |
| 1049 | (mmc_card_hs200(card) ? "hs200" : ""), |
| 1050 | mmc_hostname(card->host)); |
| 1051 | err = 0; |
| 1052 | } |
| 1053 | |
| 1054 | bus_speed: |
| 1055 | /* |
| 1056 | * Set the bus speed to the selected bus timing. |
| 1057 | * If timing is not selected, backward compatible is the default. |
| 1058 | */ |
| 1059 | mmc_set_bus_speed(card); |
| 1060 | return err; |
| 1061 | } |
| 1062 | |
| 1063 | /* |
| 1064 | * Execute tuning sequence to seek the proper bus operating |
| 1065 | * conditions for HS200, which sends CMD21 to the device. |
| 1066 | */ |
| 1067 | static int mmc_hs200_tuning(struct mmc_card *card) |
| 1068 | { |
| 1069 | struct mmc_host *host = card->host; |
| 1070 | int err = 0; |
| 1071 | |
| 1072 | if (host->ops->execute_tuning) { |
| 1073 | mmc_host_clk_hold(host); |
| 1074 | err = host->ops->execute_tuning(host, |
| 1075 | MMC_SEND_TUNING_BLOCK_HS200); |
| 1076 | mmc_host_clk_release(host); |
| 1077 | |
| 1078 | if (err) |
| 1079 | pr_warn("%s: tuning execution failed\n", |
| 1080 | mmc_hostname(host)); |
| 1081 | } |
| 1082 | |
| 1083 | return err; |
| 1084 | } |
| 1085 | |
| 1086 | /* |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1087 | * Handle the detection and initialisation of a card. |
| 1088 | * |
Deepak Saxena | 8769392 | 2008-06-16 19:20:57 -0700 | [diff] [blame] | 1089 | * In the case of a resume, "oldcard" will contain the card |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1090 | * we're trying to reinitialise. |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1091 | */ |
Pierre Ossman | 8c75dea | 2007-05-19 16:14:43 +0200 | [diff] [blame] | 1092 | static int mmc_init_card(struct mmc_host *host, u32 ocr, |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1093 | struct mmc_card *oldcard) |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1094 | { |
| 1095 | struct mmc_card *card; |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 1096 | int err; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1097 | u32 cid[4]; |
Philip Rakity | b676f03 | 2011-02-13 23:13:09 -0800 | [diff] [blame] | 1098 | u32 rocr; |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 1099 | u8 *ext_csd = NULL; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1100 | |
| 1101 | BUG_ON(!host); |
Pierre Ossman | d84075c8 | 2007-08-09 13:23:56 +0200 | [diff] [blame] | 1102 | WARN_ON(!host->claimed); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1103 | |
Stefan Nilsson XK | 4466903 | 2011-09-15 17:50:38 +0200 | [diff] [blame] | 1104 | /* Set correct bus mode for MMC before attempting init */ |
| 1105 | if (!mmc_host_is_spi(host)) |
| 1106 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); |
| 1107 | |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1108 | /* |
| 1109 | * Since we're changing the OCR value, we seem to |
| 1110 | * need to tell some cards to go back to the idle |
| 1111 | * state. We wait 1ms to give cards time to |
| 1112 | * respond. |
Balaji T K | c380546 | 2011-09-08 22:08:39 +0530 | [diff] [blame] | 1113 | * mmc_go_idle is needed for eMMC that are asleep |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1114 | */ |
| 1115 | mmc_go_idle(host); |
| 1116 | |
| 1117 | /* The extra bit indicates that we support high capacity */ |
Philip Rakity | b676f03 | 2011-02-13 23:13:09 -0800 | [diff] [blame] | 1118 | err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 1119 | if (err) |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1120 | goto err; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1121 | |
| 1122 | /* |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1123 | * For SPI, enable CRC as appropriate. |
| 1124 | */ |
| 1125 | if (mmc_host_is_spi(host)) { |
| 1126 | err = mmc_spi_set_crc(host, use_spi_crc); |
| 1127 | if (err) |
| 1128 | goto err; |
| 1129 | } |
| 1130 | |
| 1131 | /* |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1132 | * Fetch CID from card. |
| 1133 | */ |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1134 | if (mmc_host_is_spi(host)) |
| 1135 | err = mmc_send_cid(host, cid); |
| 1136 | else |
| 1137 | err = mmc_all_send_cid(host, cid); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 1138 | if (err) |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1139 | goto err; |
| 1140 | |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1141 | if (oldcard) { |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 1142 | if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { |
| 1143 | err = -ENOENT; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1144 | goto err; |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 1145 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1146 | |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1147 | card = oldcard; |
| 1148 | } else { |
| 1149 | /* |
| 1150 | * Allocate card structure. |
| 1151 | */ |
Pierre Ossman | 51ec92e | 2008-03-21 23:54:50 +0100 | [diff] [blame] | 1152 | card = mmc_alloc_card(host, &mmc_type); |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 1153 | if (IS_ERR(card)) { |
| 1154 | err = PTR_ERR(card); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1155 | goto err; |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 1156 | } |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1157 | |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1158 | card->ocr = ocr; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1159 | card->type = MMC_TYPE_MMC; |
| 1160 | card->rca = 1; |
| 1161 | memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); |
| 1162 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1163 | |
| 1164 | /* |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1165 | * For native busses: set card RCA and quit open drain mode. |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1166 | */ |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1167 | if (!mmc_host_is_spi(host)) { |
| 1168 | err = mmc_set_relative_addr(card); |
| 1169 | if (err) |
| 1170 | goto free_card; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1171 | |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1172 | mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); |
| 1173 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1174 | |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1175 | if (!oldcard) { |
| 1176 | /* |
| 1177 | * Fetch CSD from card. |
| 1178 | */ |
| 1179 | err = mmc_send_csd(card, card->raw_csd); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 1180 | if (err) |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1181 | goto free_card; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1182 | |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 1183 | err = mmc_decode_csd(card); |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 1184 | if (err) |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 1185 | goto free_card; |
| 1186 | err = mmc_decode_cid(card); |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 1187 | if (err) |
Pierre Ossman | bd76631 | 2007-05-01 16:11:57 +0200 | [diff] [blame] | 1188 | goto free_card; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1189 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1190 | |
| 1191 | /* |
Pierre Ossman | 89a73cf | 2007-05-01 15:08:30 +0200 | [diff] [blame] | 1192 | * Select card, as all following commands rely on that. |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1193 | */ |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1194 | if (!mmc_host_is_spi(host)) { |
| 1195 | err = mmc_select_card(card); |
| 1196 | if (err) |
| 1197 | goto free_card; |
| 1198 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1199 | |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1200 | if (!oldcard) { |
| 1201 | /* |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1202 | * Fetch and process extended CSD. |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1203 | */ |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 1204 | |
| 1205 | err = mmc_get_ext_csd(card, &ext_csd); |
| 1206 | if (err) |
| 1207 | goto free_card; |
| 1208 | err = mmc_read_ext_csd(card, ext_csd); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 1209 | if (err) |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1210 | goto free_card; |
Philip Rakity | b676f03 | 2011-02-13 23:13:09 -0800 | [diff] [blame] | 1211 | |
| 1212 | /* If doing byte addressing, check if required to do sector |
| 1213 | * addressing. Handle the case of <2GB cards needing sector |
| 1214 | * addressing. See section 8.1 JEDEC Standard JED84-A441; |
| 1215 | * ocr register has bit 30 set for sector addressing. |
| 1216 | */ |
| 1217 | if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) |
| 1218 | mmc_card_set_blockaddr(card); |
| 1219 | |
Adrian Hunter | dfe86cb | 2010-08-11 14:17:46 -0700 | [diff] [blame] | 1220 | /* Erase size depends on CSD and Extended CSD */ |
| 1221 | mmc_set_erase_size(card); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1222 | } |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1223 | |
| 1224 | /* |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 1225 | * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 1226 | * bit. This bit will be lost every time after a reset or power off. |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 1227 | */ |
Adrian Hunter | 83bb24a | 2012-03-13 05:19:13 -0400 | [diff] [blame] | 1228 | if (card->ext_csd.enhanced_area_en || |
| 1229 | (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 1230 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
Seungwon Jeon | b23cf0b | 2011-09-23 14:15:29 +0900 | [diff] [blame] | 1231 | EXT_CSD_ERASE_GROUP_DEF, 1, |
| 1232 | card->ext_csd.generic_cmd6_time); |
Chuanxiao Dong | 709de99 | 2011-01-22 04:09:41 +0800 | [diff] [blame] | 1233 | |
| 1234 | if (err && err != -EBADMSG) |
| 1235 | goto free_card; |
| 1236 | |
| 1237 | if (err) { |
| 1238 | err = 0; |
| 1239 | /* |
| 1240 | * Just disable enhanced area off & sz |
| 1241 | * will try to enable ERASE_GROUP_DEF |
| 1242 | * during next time reinit |
| 1243 | */ |
| 1244 | card->ext_csd.enhanced_area_offset = -EINVAL; |
| 1245 | card->ext_csd.enhanced_area_size = -EINVAL; |
| 1246 | } else { |
| 1247 | card->ext_csd.erase_group_def = 1; |
| 1248 | /* |
| 1249 | * enable ERASE_GRP_DEF successfully. |
| 1250 | * This will affect the erase size, so |
| 1251 | * here need to reset erase size |
| 1252 | */ |
| 1253 | mmc_set_erase_size(card); |
| 1254 | } |
| 1255 | } |
| 1256 | |
| 1257 | /* |
Philip Rakity | 41e2a48 | 2011-03-19 14:10:33 -0400 | [diff] [blame] | 1258 | * Ensure eMMC user default partition is enabled |
| 1259 | */ |
Andrei Warkentin | 371a689 | 2011-04-11 18:10:25 -0500 | [diff] [blame] | 1260 | if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { |
| 1261 | card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; |
| 1262 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, |
| 1263 | card->ext_csd.part_config, |
| 1264 | card->ext_csd.part_time); |
| 1265 | if (err && err != -EBADMSG) |
| 1266 | goto free_card; |
Philip Rakity | 41e2a48 | 2011-03-19 14:10:33 -0400 | [diff] [blame] | 1267 | } |
| 1268 | |
| 1269 | /* |
Ulf Hansson | 43235679 | 2013-06-10 17:03:45 +0200 | [diff] [blame] | 1270 | * Enable power_off_notification byte in the ext_csd register |
Girish K S | bec8726 | 2011-10-13 12:04:16 +0530 | [diff] [blame] | 1271 | */ |
Ulf Hansson | 43235679 | 2013-06-10 17:03:45 +0200 | [diff] [blame] | 1272 | if (card->ext_csd.rev >= 6) { |
Girish K S | bec8726 | 2011-10-13 12:04:16 +0530 | [diff] [blame] | 1273 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 1274 | EXT_CSD_POWER_OFF_NOTIFICATION, |
| 1275 | EXT_CSD_POWER_ON, |
| 1276 | card->ext_csd.generic_cmd6_time); |
| 1277 | if (err && err != -EBADMSG) |
| 1278 | goto free_card; |
Girish K S | bec8726 | 2011-10-13 12:04:16 +0530 | [diff] [blame] | 1279 | |
Girish K S | 96a85d5 | 2011-11-04 16:22:47 +0530 | [diff] [blame] | 1280 | /* |
| 1281 | * The err can be -EBADMSG or 0, |
| 1282 | * so check for success and update the flag |
| 1283 | */ |
| 1284 | if (!err) |
Ulf Hansson | e6c0858 | 2012-10-05 12:45:39 -0400 | [diff] [blame] | 1285 | card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; |
Girish K S | 96a85d5 | 2011-11-04 16:22:47 +0530 | [diff] [blame] | 1286 | } |
Girish K S | bec8726 | 2011-10-13 12:04:16 +0530 | [diff] [blame] | 1287 | |
| 1288 | /* |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 1289 | * Select timing interface |
Pierre Ossman | 89a73cf | 2007-05-01 15:08:30 +0200 | [diff] [blame] | 1290 | */ |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 1291 | err = mmc_select_timing(card); |
| 1292 | if (err) |
| 1293 | goto free_card; |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1294 | |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1295 | if (mmc_card_hs200(card)) { |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 1296 | err = mmc_hs200_tuning(card); |
| 1297 | if (err) |
Girish K S | a4924c7 | 2012-01-11 14:04:52 -0500 | [diff] [blame] | 1298 | goto err; |
Seungwon Jeon | 577fb13 | 2014-04-23 17:08:44 +0900 | [diff] [blame^] | 1299 | } else if (mmc_card_hs(card)) { |
| 1300 | /* Select the desired bus width optionally */ |
| 1301 | err = mmc_select_bus_width(card); |
| 1302 | if (!IS_ERR_VALUE(err)) { |
| 1303 | err = mmc_select_hs_ddr(card); |
| 1304 | if (err) |
| 1305 | goto err; |
Adrian Hunter | ef0b27d | 2009-09-22 16:44:37 -0700 | [diff] [blame] | 1306 | } |
Pierre Ossman | 89a73cf | 2007-05-01 15:08:30 +0200 | [diff] [blame] | 1307 | } |
| 1308 | |
Seungwon Jeon | 881d1c2 | 2011-10-14 14:03:21 +0900 | [diff] [blame] | 1309 | /* |
Seungwon Jeon | 2385049 | 2014-04-23 17:08:05 +0900 | [diff] [blame] | 1310 | * Choose the power class with selected bus interface |
| 1311 | */ |
| 1312 | mmc_select_powerclass(card); |
| 1313 | |
| 1314 | /* |
Subhash Jadavani | 52d0974 | 2012-03-06 17:59:12 +0530 | [diff] [blame] | 1315 | * Enable HPI feature (if supported) |
| 1316 | */ |
| 1317 | if (card->ext_csd.hpi) { |
| 1318 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 1319 | EXT_CSD_HPI_MGMT, 1, |
| 1320 | card->ext_csd.generic_cmd6_time); |
| 1321 | if (err && err != -EBADMSG) |
| 1322 | goto free_card; |
| 1323 | if (err) { |
| 1324 | pr_warning("%s: Enabling HPI failed\n", |
| 1325 | mmc_hostname(card->host)); |
| 1326 | err = 0; |
| 1327 | } else |
| 1328 | card->ext_csd.hpi_en = 1; |
| 1329 | } |
| 1330 | |
| 1331 | /* |
Seungwon Jeon | 881d1c2 | 2011-10-14 14:03:21 +0900 | [diff] [blame] | 1332 | * If cache size is higher than 0, this indicates |
| 1333 | * the existence of cache and it can be turned on. |
| 1334 | */ |
Ulf Hansson | 7536d3f | 2013-12-18 11:59:17 +0100 | [diff] [blame] | 1335 | if (card->ext_csd.cache_size > 0) { |
Seungwon Jeon | 881d1c2 | 2011-10-14 14:03:21 +0900 | [diff] [blame] | 1336 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
Seungwon Jeon | 8bc0678 | 2011-12-09 17:47:17 +0900 | [diff] [blame] | 1337 | EXT_CSD_CACHE_CTRL, 1, |
| 1338 | card->ext_csd.generic_cmd6_time); |
Seungwon Jeon | 881d1c2 | 2011-10-14 14:03:21 +0900 | [diff] [blame] | 1339 | if (err && err != -EBADMSG) |
| 1340 | goto free_card; |
| 1341 | |
| 1342 | /* |
| 1343 | * Only if no error, cache is turned on successfully. |
| 1344 | */ |
Seungwon Jeon | 8bc0678 | 2011-12-09 17:47:17 +0900 | [diff] [blame] | 1345 | if (err) { |
| 1346 | pr_warning("%s: Cache is supported, " |
| 1347 | "but failed to turn on (%d)\n", |
| 1348 | mmc_hostname(card->host), err); |
| 1349 | card->ext_csd.cache_ctrl = 0; |
| 1350 | err = 0; |
| 1351 | } else { |
| 1352 | card->ext_csd.cache_ctrl = 1; |
| 1353 | } |
Seungwon Jeon | 881d1c2 | 2011-10-14 14:03:21 +0900 | [diff] [blame] | 1354 | } |
| 1355 | |
Seungwon Jeon | abd9ac1 | 2013-02-06 17:01:43 +0900 | [diff] [blame] | 1356 | /* |
| 1357 | * The mandatory minimum values are defined for packed command. |
| 1358 | * read: 5, write: 3 |
| 1359 | */ |
| 1360 | if (card->ext_csd.max_packed_writes >= 3 && |
| 1361 | card->ext_csd.max_packed_reads >= 5 && |
| 1362 | host->caps2 & MMC_CAP2_PACKED_CMD) { |
| 1363 | err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 1364 | EXT_CSD_EXP_EVENTS_CTRL, |
| 1365 | EXT_CSD_PACKED_EVENT_EN, |
| 1366 | card->ext_csd.generic_cmd6_time); |
| 1367 | if (err && err != -EBADMSG) |
| 1368 | goto free_card; |
| 1369 | if (err) { |
| 1370 | pr_warn("%s: Enabling packed event failed\n", |
| 1371 | mmc_hostname(card->host)); |
| 1372 | card->ext_csd.packed_event_en = 0; |
| 1373 | err = 0; |
| 1374 | } else { |
| 1375 | card->ext_csd.packed_event_en = 1; |
| 1376 | } |
| 1377 | } |
| 1378 | |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1379 | if (!oldcard) |
| 1380 | host->card = card; |
| 1381 | |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 1382 | mmc_free_ext_csd(ext_csd); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 1383 | return 0; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1384 | |
| 1385 | free_card: |
| 1386 | if (!oldcard) |
| 1387 | mmc_remove_card(card); |
| 1388 | err: |
Philip Rakity | 08ee80c | 2011-05-24 18:14:58 -0700 | [diff] [blame] | 1389 | mmc_free_ext_csd(ext_csd); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1390 | |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 1391 | return err; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1392 | } |
| 1393 | |
Ulf Hansson | 07a6821 | 2013-04-19 15:12:11 +0200 | [diff] [blame] | 1394 | static int mmc_can_sleep(struct mmc_card *card) |
| 1395 | { |
| 1396 | return (card && card->ext_csd.rev >= 3); |
| 1397 | } |
| 1398 | |
| 1399 | static int mmc_sleep(struct mmc_host *host) |
| 1400 | { |
| 1401 | struct mmc_command cmd = {0}; |
| 1402 | struct mmc_card *card = host->card; |
Ulf Hansson | cb962e0 | 2014-01-14 23:17:36 +0100 | [diff] [blame] | 1403 | unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); |
Ulf Hansson | 07a6821 | 2013-04-19 15:12:11 +0200 | [diff] [blame] | 1404 | int err; |
| 1405 | |
Ulf Hansson | 07a6821 | 2013-04-19 15:12:11 +0200 | [diff] [blame] | 1406 | err = mmc_deselect_cards(host); |
| 1407 | if (err) |
| 1408 | return err; |
| 1409 | |
| 1410 | cmd.opcode = MMC_SLEEP_AWAKE; |
| 1411 | cmd.arg = card->rca << 16; |
| 1412 | cmd.arg |= 1 << 15; |
| 1413 | |
Ulf Hansson | cb962e0 | 2014-01-14 23:17:36 +0100 | [diff] [blame] | 1414 | /* |
| 1415 | * If the max_busy_timeout of the host is specified, validate it against |
| 1416 | * the sleep cmd timeout. A failure means we need to prevent the host |
| 1417 | * from doing hw busy detection, which is done by converting to a R1 |
| 1418 | * response instead of a R1B. |
| 1419 | */ |
| 1420 | if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { |
| 1421 | cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; |
| 1422 | } else { |
| 1423 | cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; |
| 1424 | cmd.busy_timeout = timeout_ms; |
| 1425 | } |
| 1426 | |
Ulf Hansson | 07a6821 | 2013-04-19 15:12:11 +0200 | [diff] [blame] | 1427 | err = mmc_wait_for_cmd(host, &cmd, 0); |
| 1428 | if (err) |
| 1429 | return err; |
| 1430 | |
| 1431 | /* |
| 1432 | * If the host does not wait while the card signals busy, then we will |
| 1433 | * will have to wait the sleep/awake timeout. Note, we cannot use the |
| 1434 | * SEND_STATUS command to poll the status because that command (and most |
| 1435 | * others) is invalid while the card sleeps. |
| 1436 | */ |
Ulf Hansson | cb962e0 | 2014-01-14 23:17:36 +0100 | [diff] [blame] | 1437 | if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) |
| 1438 | mmc_delay(timeout_ms); |
Ulf Hansson | 07a6821 | 2013-04-19 15:12:11 +0200 | [diff] [blame] | 1439 | |
| 1440 | return err; |
| 1441 | } |
| 1442 | |
Ulf Hansson | e6c0858 | 2012-10-05 12:45:39 -0400 | [diff] [blame] | 1443 | static int mmc_can_poweroff_notify(const struct mmc_card *card) |
| 1444 | { |
| 1445 | return card && |
| 1446 | mmc_card_mmc(card) && |
| 1447 | (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); |
| 1448 | } |
| 1449 | |
| 1450 | static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) |
| 1451 | { |
| 1452 | unsigned int timeout = card->ext_csd.generic_cmd6_time; |
| 1453 | int err; |
| 1454 | |
| 1455 | /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ |
| 1456 | if (notify_type == EXT_CSD_POWER_OFF_LONG) |
| 1457 | timeout = card->ext_csd.power_off_longtime; |
| 1458 | |
Ulf Hansson | 878e200 | 2013-09-09 11:57:57 +0200 | [diff] [blame] | 1459 | err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, |
| 1460 | EXT_CSD_POWER_OFF_NOTIFICATION, |
Ulf Hansson | 4509f8477 | 2014-01-08 16:09:33 +0100 | [diff] [blame] | 1461 | notify_type, timeout, true, false, false); |
Ulf Hansson | e6c0858 | 2012-10-05 12:45:39 -0400 | [diff] [blame] | 1462 | if (err) |
| 1463 | pr_err("%s: Power Off Notification timed out, %u\n", |
| 1464 | mmc_hostname(card->host), timeout); |
| 1465 | |
| 1466 | /* Disable the power off notification after the switch operation. */ |
| 1467 | card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; |
| 1468 | |
| 1469 | return err; |
| 1470 | } |
| 1471 | |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1472 | /* |
| 1473 | * Host is being removed. Free up the current card. |
| 1474 | */ |
| 1475 | static void mmc_remove(struct mmc_host *host) |
| 1476 | { |
| 1477 | BUG_ON(!host); |
| 1478 | BUG_ON(!host->card); |
| 1479 | |
| 1480 | mmc_remove_card(host->card); |
| 1481 | host->card = NULL; |
| 1482 | } |
| 1483 | |
| 1484 | /* |
Adrian Hunter | d304950 | 2011-11-28 16:22:00 +0200 | [diff] [blame] | 1485 | * Card detection - card is alive. |
| 1486 | */ |
| 1487 | static int mmc_alive(struct mmc_host *host) |
| 1488 | { |
| 1489 | return mmc_send_status(host->card, NULL); |
| 1490 | } |
| 1491 | |
| 1492 | /* |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1493 | * Card detection callback from host. |
| 1494 | */ |
| 1495 | static void mmc_detect(struct mmc_host *host) |
| 1496 | { |
| 1497 | int err; |
| 1498 | |
| 1499 | BUG_ON(!host); |
| 1500 | BUG_ON(!host->card); |
| 1501 | |
Ulf Hansson | e94cfef | 2013-05-02 14:02:38 +0200 | [diff] [blame] | 1502 | mmc_get_card(host->card); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1503 | |
| 1504 | /* |
| 1505 | * Just check if our card has been removed. |
| 1506 | */ |
Adrian Hunter | d304950 | 2011-11-28 16:22:00 +0200 | [diff] [blame] | 1507 | err = _mmc_detect_card_removed(host); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1508 | |
Ulf Hansson | e94cfef | 2013-05-02 14:02:38 +0200 | [diff] [blame] | 1509 | mmc_put_card(host->card); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1510 | |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 1511 | if (err) { |
Pierre Ossman | 4101c16 | 2007-05-19 13:39:01 +0200 | [diff] [blame] | 1512 | mmc_remove(host); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1513 | |
| 1514 | mmc_claim_host(host); |
| 1515 | mmc_detach_bus(host); |
Ulf Hansson | 7f7e412 | 2011-09-21 14:08:13 -0400 | [diff] [blame] | 1516 | mmc_power_off(host); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1517 | mmc_release_host(host); |
| 1518 | } |
| 1519 | } |
| 1520 | |
Ulf Hansson | 03d071f | 2013-06-10 17:03:43 +0200 | [diff] [blame] | 1521 | static int _mmc_suspend(struct mmc_host *host, bool is_suspend) |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1522 | { |
Balaji T K | c380546 | 2011-09-08 22:08:39 +0530 | [diff] [blame] | 1523 | int err = 0; |
Ulf Hansson | 03d071f | 2013-06-10 17:03:43 +0200 | [diff] [blame] | 1524 | unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : |
| 1525 | EXT_CSD_POWER_OFF_LONG; |
Balaji T K | c380546 | 2011-09-08 22:08:39 +0530 | [diff] [blame] | 1526 | |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1527 | BUG_ON(!host); |
| 1528 | BUG_ON(!host->card); |
| 1529 | |
| 1530 | mmc_claim_host(host); |
Maya Erez | 881d926 | 2013-01-28 16:44:22 -0500 | [diff] [blame] | 1531 | |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 1532 | if (mmc_card_suspended(host->card)) |
| 1533 | goto out; |
| 1534 | |
Ulf Hansson | 39b9431 | 2013-05-02 14:02:36 +0200 | [diff] [blame] | 1535 | if (mmc_card_doing_bkops(host->card)) { |
| 1536 | err = mmc_stop_bkops(host->card); |
| 1537 | if (err) |
| 1538 | goto out; |
| 1539 | } |
| 1540 | |
Ulf Hansson | 10e5d96 | 2013-12-16 16:23:22 +0100 | [diff] [blame] | 1541 | err = mmc_flush_cache(host->card); |
Maya Erez | 881d926 | 2013-01-28 16:44:22 -0500 | [diff] [blame] | 1542 | if (err) |
| 1543 | goto out; |
| 1544 | |
Ulf Hansson | 43235679 | 2013-06-10 17:03:45 +0200 | [diff] [blame] | 1545 | if (mmc_can_poweroff_notify(host->card) && |
Ulf Hansson | 53275c2 | 2013-06-10 17:03:46 +0200 | [diff] [blame] | 1546 | ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) |
Ulf Hansson | 03d071f | 2013-06-10 17:03:43 +0200 | [diff] [blame] | 1547 | err = mmc_poweroff_notify(host->card, notify_type); |
Ulf Hansson | 07a6821 | 2013-04-19 15:12:11 +0200 | [diff] [blame] | 1548 | else if (mmc_can_sleep(host->card)) |
| 1549 | err = mmc_sleep(host); |
Ulf Hansson | e6c0858 | 2012-10-05 12:45:39 -0400 | [diff] [blame] | 1550 | else if (!mmc_host_is_spi(host)) |
Jaehoon Chung | 85e727e | 2012-05-31 20:31:47 +0900 | [diff] [blame] | 1551 | err = mmc_deselect_cards(host); |
Nicolas Pitre | 95cdfb7 | 2009-09-22 16:45:29 -0700 | [diff] [blame] | 1552 | |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 1553 | if (!err) { |
Ulf Hansson | 7459026 | 2013-06-10 17:03:38 +0200 | [diff] [blame] | 1554 | mmc_power_off(host); |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 1555 | mmc_card_set_suspended(host->card); |
| 1556 | } |
Maya Erez | 881d926 | 2013-01-28 16:44:22 -0500 | [diff] [blame] | 1557 | out: |
| 1558 | mmc_release_host(host); |
Balaji T K | c380546 | 2011-09-08 22:08:39 +0530 | [diff] [blame] | 1559 | return err; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1560 | } |
| 1561 | |
| 1562 | /* |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 1563 | * Suspend callback |
Ulf Hansson | 03d071f | 2013-06-10 17:03:43 +0200 | [diff] [blame] | 1564 | */ |
| 1565 | static int mmc_suspend(struct mmc_host *host) |
| 1566 | { |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 1567 | int err; |
| 1568 | |
| 1569 | err = _mmc_suspend(host, true); |
| 1570 | if (!err) { |
| 1571 | pm_runtime_disable(&host->card->dev); |
| 1572 | pm_runtime_set_suspended(&host->card->dev); |
| 1573 | } |
| 1574 | |
| 1575 | return err; |
Ulf Hansson | 03d071f | 2013-06-10 17:03:43 +0200 | [diff] [blame] | 1576 | } |
| 1577 | |
| 1578 | /* |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1579 | * This function tries to determine if the same card is still present |
| 1580 | * and, if so, restore all state to it. |
| 1581 | */ |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 1582 | static int _mmc_resume(struct mmc_host *host) |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1583 | { |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 1584 | int err = 0; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1585 | |
| 1586 | BUG_ON(!host); |
| 1587 | BUG_ON(!host->card); |
| 1588 | |
| 1589 | mmc_claim_host(host); |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 1590 | |
| 1591 | if (!mmc_card_suspended(host->card)) |
| 1592 | goto out; |
| 1593 | |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1594 | mmc_power_up(host, host->card->ocr); |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1595 | err = mmc_init_card(host, host->card->ocr, host->card); |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 1596 | mmc_card_clr_suspended(host->card); |
Pierre Ossman | 2986d0b | 2007-07-22 17:52:06 +0200 | [diff] [blame] | 1597 | |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 1598 | out: |
| 1599 | mmc_release_host(host); |
Nicolas Pitre | 95cdfb7 | 2009-09-22 16:45:29 -0700 | [diff] [blame] | 1600 | return err; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1601 | } |
| 1602 | |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 1603 | /* |
| 1604 | * Shutdown callback |
| 1605 | */ |
| 1606 | static int mmc_shutdown(struct mmc_host *host) |
| 1607 | { |
| 1608 | int err = 0; |
| 1609 | |
| 1610 | /* |
| 1611 | * In a specific case for poweroff notify, we need to resume the card |
| 1612 | * before we can shutdown it properly. |
| 1613 | */ |
| 1614 | if (mmc_can_poweroff_notify(host->card) && |
| 1615 | !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 1616 | err = _mmc_resume(host); |
Ulf Hansson | 9ec775f | 2013-10-02 17:37:09 +0200 | [diff] [blame] | 1617 | |
| 1618 | if (!err) |
| 1619 | err = _mmc_suspend(host, false); |
| 1620 | |
| 1621 | return err; |
| 1622 | } |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 1623 | |
| 1624 | /* |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 1625 | * Callback for resume. |
| 1626 | */ |
| 1627 | static int mmc_resume(struct mmc_host *host) |
| 1628 | { |
Ulf Hansson | 4d22378 | 2013-10-10 17:22:23 +0200 | [diff] [blame] | 1629 | int err = 0; |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 1630 | |
Ulf Hansson | 4d22378 | 2013-10-10 17:22:23 +0200 | [diff] [blame] | 1631 | if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) { |
| 1632 | err = _mmc_resume(host); |
| 1633 | pm_runtime_set_active(&host->card->dev); |
| 1634 | pm_runtime_mark_last_busy(&host->card->dev); |
| 1635 | } |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 1636 | pm_runtime_enable(&host->card->dev); |
| 1637 | |
| 1638 | return err; |
| 1639 | } |
| 1640 | |
| 1641 | /* |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 1642 | * Callback for runtime_suspend. |
| 1643 | */ |
| 1644 | static int mmc_runtime_suspend(struct mmc_host *host) |
| 1645 | { |
| 1646 | int err; |
| 1647 | |
| 1648 | if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) |
| 1649 | return 0; |
| 1650 | |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 1651 | err = _mmc_suspend(host, true); |
Ulf Hansson | 0cc81a8 | 2013-10-03 11:24:44 +0200 | [diff] [blame] | 1652 | if (err) |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 1653 | pr_err("%s: error %d doing aggessive suspend\n", |
| 1654 | mmc_hostname(host), err); |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 1655 | |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 1656 | return err; |
| 1657 | } |
| 1658 | |
| 1659 | /* |
| 1660 | * Callback for runtime_resume. |
| 1661 | */ |
| 1662 | static int mmc_runtime_resume(struct mmc_host *host) |
| 1663 | { |
| 1664 | int err; |
| 1665 | |
Ulf Hansson | 4d22378 | 2013-10-10 17:22:23 +0200 | [diff] [blame] | 1666 | if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME))) |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 1667 | return 0; |
| 1668 | |
Ulf Hansson | 0cb403a | 2013-10-10 14:20:05 +0200 | [diff] [blame] | 1669 | err = _mmc_resume(host); |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 1670 | if (err) |
| 1671 | pr_err("%s: error %d doing aggessive resume\n", |
| 1672 | mmc_hostname(host), err); |
| 1673 | |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 1674 | return 0; |
| 1675 | } |
| 1676 | |
Ohad Ben-Cohen | 12ae637 | 2010-10-02 13:54:06 +0200 | [diff] [blame] | 1677 | static int mmc_power_restore(struct mmc_host *host) |
Adrian Hunter | eae1aee | 2009-09-22 16:44:33 -0700 | [diff] [blame] | 1678 | { |
Ohad Ben-Cohen | 12ae637 | 2010-10-02 13:54:06 +0200 | [diff] [blame] | 1679 | int ret; |
| 1680 | |
Adrian Hunter | eae1aee | 2009-09-22 16:44:33 -0700 | [diff] [blame] | 1681 | mmc_claim_host(host); |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1682 | ret = mmc_init_card(host, host->card->ocr, host->card); |
Adrian Hunter | eae1aee | 2009-09-22 16:44:33 -0700 | [diff] [blame] | 1683 | mmc_release_host(host); |
Ohad Ben-Cohen | 12ae637 | 2010-10-02 13:54:06 +0200 | [diff] [blame] | 1684 | |
| 1685 | return ret; |
Adrian Hunter | eae1aee | 2009-09-22 16:44:33 -0700 | [diff] [blame] | 1686 | } |
| 1687 | |
Adrian Hunter | 9feae24 | 2009-09-22 16:44:32 -0700 | [diff] [blame] | 1688 | static const struct mmc_bus_ops mmc_ops = { |
| 1689 | .remove = mmc_remove, |
| 1690 | .detect = mmc_detect, |
Adrian Hunter | 9feae24 | 2009-09-22 16:44:32 -0700 | [diff] [blame] | 1691 | .suspend = mmc_suspend, |
| 1692 | .resume = mmc_resume, |
Ulf Hansson | c4d770d | 2013-05-02 14:02:39 +0200 | [diff] [blame] | 1693 | .runtime_suspend = mmc_runtime_suspend, |
| 1694 | .runtime_resume = mmc_runtime_resume, |
Adrian Hunter | eae1aee | 2009-09-22 16:44:33 -0700 | [diff] [blame] | 1695 | .power_restore = mmc_power_restore, |
Adrian Hunter | d304950 | 2011-11-28 16:22:00 +0200 | [diff] [blame] | 1696 | .alive = mmc_alive, |
Ulf Hansson | 486fdbb | 2013-06-10 17:03:44 +0200 | [diff] [blame] | 1697 | .shutdown = mmc_shutdown, |
Adrian Hunter | 9feae24 | 2009-09-22 16:44:32 -0700 | [diff] [blame] | 1698 | }; |
| 1699 | |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1700 | /* |
| 1701 | * Starting point for MMC card init. |
| 1702 | */ |
Andy Ross | 807e8e4 | 2011-01-03 10:36:56 -0800 | [diff] [blame] | 1703 | int mmc_attach_mmc(struct mmc_host *host) |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1704 | { |
| 1705 | int err; |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1706 | u32 ocr, rocr; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1707 | |
| 1708 | BUG_ON(!host); |
Pierre Ossman | d84075c8 | 2007-08-09 13:23:56 +0200 | [diff] [blame] | 1709 | WARN_ON(!host->claimed); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1710 | |
Stefan Nilsson XK | 4466903 | 2011-09-15 17:50:38 +0200 | [diff] [blame] | 1711 | /* Set correct bus mode for MMC before attempting attach */ |
| 1712 | if (!mmc_host_is_spi(host)) |
| 1713 | mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); |
| 1714 | |
Andy Ross | 807e8e4 | 2011-01-03 10:36:56 -0800 | [diff] [blame] | 1715 | err = mmc_send_op_cond(host, 0, &ocr); |
| 1716 | if (err) |
| 1717 | return err; |
| 1718 | |
Ulf Hansson | 2501c91 | 2013-10-30 01:00:18 +0100 | [diff] [blame] | 1719 | mmc_attach_bus(host, &mmc_ops); |
Takashi Iwai | 8f230f4 | 2010-12-08 10:04:30 +0100 | [diff] [blame] | 1720 | if (host->ocr_avail_mmc) |
| 1721 | host->ocr_avail = host->ocr_avail_mmc; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1722 | |
| 1723 | /* |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 1724 | * We need to get OCR a different way for SPI. |
| 1725 | */ |
| 1726 | if (mmc_host_is_spi(host)) { |
| 1727 | err = mmc_spi_read_ocr(host, 1, &ocr); |
| 1728 | if (err) |
| 1729 | goto err; |
| 1730 | } |
| 1731 | |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1732 | rocr = mmc_select_voltage(host, ocr); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1733 | |
| 1734 | /* |
| 1735 | * Can we support the voltage of the card? |
| 1736 | */ |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1737 | if (!rocr) { |
Pierre Ossman | 109b5be | 2007-07-23 00:12:10 +0200 | [diff] [blame] | 1738 | err = -EINVAL; |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1739 | goto err; |
Pierre Ossman | 109b5be | 2007-07-23 00:12:10 +0200 | [diff] [blame] | 1740 | } |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1741 | |
| 1742 | /* |
| 1743 | * Detect and init the card. |
| 1744 | */ |
Ulf Hansson | 6904115 | 2013-09-13 11:31:33 +0200 | [diff] [blame] | 1745 | err = mmc_init_card(host, rocr, NULL); |
Pierre Ossman | 17b0429 | 2007-07-22 22:18:46 +0200 | [diff] [blame] | 1746 | if (err) |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1747 | goto err; |
| 1748 | |
| 1749 | mmc_release_host(host); |
Pierre Ossman | 4101c16 | 2007-05-19 13:39:01 +0200 | [diff] [blame] | 1750 | err = mmc_add_card(host->card); |
Andy Ross | 807e8e4 | 2011-01-03 10:36:56 -0800 | [diff] [blame] | 1751 | mmc_claim_host(host); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1752 | if (err) |
Pierre Ossman | 2986d0b | 2007-07-22 17:52:06 +0200 | [diff] [blame] | 1753 | goto remove_card; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1754 | |
| 1755 | return 0; |
| 1756 | |
Pierre Ossman | 2986d0b | 2007-07-22 17:52:06 +0200 | [diff] [blame] | 1757 | remove_card: |
Andy Ross | 807e8e4 | 2011-01-03 10:36:56 -0800 | [diff] [blame] | 1758 | mmc_release_host(host); |
Pierre Ossman | 6abaa0c | 2007-05-01 16:00:02 +0200 | [diff] [blame] | 1759 | mmc_remove_card(host->card); |
Pierre Ossman | 2986d0b | 2007-07-22 17:52:06 +0200 | [diff] [blame] | 1760 | mmc_claim_host(host); |
Andy Ross | 807e8e4 | 2011-01-03 10:36:56 -0800 | [diff] [blame] | 1761 | host->card = NULL; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1762 | err: |
| 1763 | mmc_detach_bus(host); |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1764 | |
Girish K S | a3c76eb | 2011-10-11 11:44:09 +0530 | [diff] [blame] | 1765 | pr_err("%s: error %d whilst initialising MMC card\n", |
Pierre Ossman | 109b5be | 2007-07-23 00:12:10 +0200 | [diff] [blame] | 1766 | mmc_hostname(host), err); |
| 1767 | |
Pierre Ossman | adf66a0 | 2007-07-22 23:08:30 +0200 | [diff] [blame] | 1768 | return err; |
Pierre Ossman | 7ea239d | 2006-12-31 00:11:32 +0100 | [diff] [blame] | 1769 | } |