17ea239d9SPierre Ossman /* 270f10482SPierre Ossman * linux/drivers/mmc/core/mmc.c 37ea239d9SPierre Ossman * 47ea239d9SPierre Ossman * Copyright (C) 2003-2004 Russell King, All Rights Reserved. 57ea239d9SPierre Ossman * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. 67ea239d9SPierre Ossman * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved. 77ea239d9SPierre Ossman * 87ea239d9SPierre Ossman * This program is free software; you can redistribute it and/or modify 97ea239d9SPierre Ossman * it under the terms of the GNU General Public License version 2 as 107ea239d9SPierre Ossman * published by the Free Software Foundation. 117ea239d9SPierre Ossman */ 127ea239d9SPierre Ossman 137ea239d9SPierre Ossman #include <linux/err.h> 145a0e3ad6STejun Heo #include <linux/slab.h> 150205a904SPaul Gortmaker #include <linux/stat.h> 160cb403a2SUlf Hansson #include <linux/pm_runtime.h> 177ea239d9SPierre Ossman 187ea239d9SPierre Ossman #include <linux/mmc/host.h> 197ea239d9SPierre Ossman #include <linux/mmc/card.h> 207ea239d9SPierre Ossman #include <linux/mmc/mmc.h> 217ea239d9SPierre Ossman 227ea239d9SPierre Ossman #include "core.h" 234101c16aSPierre Ossman #include "bus.h" 247ea239d9SPierre Ossman #include "mmc_ops.h" 254c4cb171SPhilip Rakity #include "sd_ops.h" 267ea239d9SPierre Ossman 277ea239d9SPierre Ossman static const unsigned int tran_exp[] = { 287ea239d9SPierre Ossman 10000, 100000, 1000000, 10000000, 297ea239d9SPierre Ossman 0, 0, 0, 0 307ea239d9SPierre Ossman }; 317ea239d9SPierre Ossman 327ea239d9SPierre Ossman static const unsigned char tran_mant[] = { 337ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 347ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 357ea239d9SPierre Ossman }; 367ea239d9SPierre Ossman 377ea239d9SPierre Ossman static const unsigned int tacc_exp[] = { 387ea239d9SPierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 397ea239d9SPierre Ossman }; 407ea239d9SPierre Ossman 417ea239d9SPierre Ossman static const unsigned int tacc_mant[] = { 427ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 437ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 447ea239d9SPierre Ossman }; 457ea239d9SPierre Ossman 467ea239d9SPierre Ossman #define UNSTUFF_BITS(resp,start,size) \ 477ea239d9SPierre Ossman ({ \ 487ea239d9SPierre Ossman const int __size = size; \ 497ea239d9SPierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 507ea239d9SPierre Ossman const int __off = 3 - ((start) / 32); \ 517ea239d9SPierre Ossman const int __shft = (start) & 31; \ 527ea239d9SPierre Ossman u32 __res; \ 537ea239d9SPierre Ossman \ 547ea239d9SPierre Ossman __res = resp[__off] >> __shft; \ 557ea239d9SPierre Ossman if (__size + __shft > 32) \ 567ea239d9SPierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 577ea239d9SPierre Ossman __res & __mask; \ 587ea239d9SPierre Ossman }) 597ea239d9SPierre Ossman 607ea239d9SPierre Ossman /* 617ea239d9SPierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 627ea239d9SPierre Ossman */ 63bd766312SPierre Ossman static int mmc_decode_cid(struct mmc_card *card) 647ea239d9SPierre Ossman { 657ea239d9SPierre Ossman u32 *resp = card->raw_cid; 667ea239d9SPierre Ossman 677ea239d9SPierre Ossman /* 687ea239d9SPierre Ossman * The selection of the format here is based upon published 697ea239d9SPierre Ossman * specs from sandisk and from what people have reported. 707ea239d9SPierre Ossman */ 717ea239d9SPierre Ossman switch (card->csd.mmca_vsn) { 727ea239d9SPierre Ossman case 0: /* MMC v1.0 - v1.2 */ 737ea239d9SPierre Ossman case 1: /* MMC v1.4 */ 747ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); 757ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 767ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 777ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 787ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 797ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 807ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 817ea239d9SPierre Ossman card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); 827ea239d9SPierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); 837ea239d9SPierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); 847ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 24); 857ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 867ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 877ea239d9SPierre Ossman break; 887ea239d9SPierre Ossman 897ea239d9SPierre Ossman case 2: /* MMC v2.0 - v2.2 */ 907ea239d9SPierre Ossman case 3: /* MMC v3.1 - v3.3 */ 917ea239d9SPierre Ossman case 4: /* MMC v4 */ 927ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 937ea239d9SPierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 947ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 957ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 967ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 977ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 987ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 997ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 10051e7e8b6SBernie Thompson card->cid.prv = UNSTUFF_BITS(resp, 48, 8); 1017ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 32); 1027ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1037ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1047ea239d9SPierre Ossman break; 1057ea239d9SPierre Ossman 1067ea239d9SPierre Ossman default: 107a3c76eb9SGirish K S pr_err("%s: card has unknown MMCA version %d\n", 1087ea239d9SPierre Ossman mmc_hostname(card->host), card->csd.mmca_vsn); 109bd766312SPierre Ossman return -EINVAL; 1107ea239d9SPierre Ossman } 111bd766312SPierre Ossman 112bd766312SPierre Ossman return 0; 1137ea239d9SPierre Ossman } 1147ea239d9SPierre Ossman 115dfe86cbaSAdrian Hunter static void mmc_set_erase_size(struct mmc_card *card) 116dfe86cbaSAdrian Hunter { 117dfe86cbaSAdrian Hunter if (card->ext_csd.erase_group_def & 1) 118dfe86cbaSAdrian Hunter card->erase_size = card->ext_csd.hc_erase_size; 119dfe86cbaSAdrian Hunter else 120dfe86cbaSAdrian Hunter card->erase_size = card->csd.erase_size; 121dfe86cbaSAdrian Hunter 122dfe86cbaSAdrian Hunter mmc_init_erase(card); 123dfe86cbaSAdrian Hunter } 124dfe86cbaSAdrian Hunter 1257ea239d9SPierre Ossman /* 1267ea239d9SPierre Ossman * Given a 128-bit response, decode to our card CSD structure. 1277ea239d9SPierre Ossman */ 128bd766312SPierre Ossman static int mmc_decode_csd(struct mmc_card *card) 1297ea239d9SPierre Ossman { 1307ea239d9SPierre Ossman struct mmc_csd *csd = &card->csd; 131dfe86cbaSAdrian Hunter unsigned int e, m, a, b; 1327ea239d9SPierre Ossman u32 *resp = card->raw_csd; 1337ea239d9SPierre Ossman 1347ea239d9SPierre Ossman /* 1357ea239d9SPierre Ossman * We only understand CSD structure v1.1 and v1.2. 1367ea239d9SPierre Ossman * v1.2 has extra information in bits 15, 11 and 10. 1376da24b78SKyungmin Park * We also support eMMC v4.4 & v4.41. 1387ea239d9SPierre Ossman */ 1396da24b78SKyungmin Park csd->structure = UNSTUFF_BITS(resp, 126, 2); 1406da24b78SKyungmin Park if (csd->structure == 0) { 141a3c76eb9SGirish K S pr_err("%s: unrecognised CSD structure version %d\n", 1426da24b78SKyungmin Park mmc_hostname(card->host), csd->structure); 143bd766312SPierre Ossman return -EINVAL; 1447ea239d9SPierre Ossman } 1457ea239d9SPierre Ossman 1467ea239d9SPierre Ossman csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); 1477ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1487ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1497ea239d9SPierre Ossman csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; 1507ea239d9SPierre Ossman csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1517ea239d9SPierre Ossman 1527ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1537ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1547ea239d9SPierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1557ea239d9SPierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1567ea239d9SPierre Ossman 1577ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1587ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1597ea239d9SPierre Ossman csd->capacity = (1 + m) << (e + 2); 1607ea239d9SPierre Ossman 1617ea239d9SPierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1627ea239d9SPierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1637ea239d9SPierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1647ea239d9SPierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1653d705d14SSascha Hauer csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); 1667ea239d9SPierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1677ea239d9SPierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1687ea239d9SPierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 169bd766312SPierre Ossman 170dfe86cbaSAdrian Hunter if (csd->write_blkbits >= 9) { 171dfe86cbaSAdrian Hunter a = UNSTUFF_BITS(resp, 42, 5); 172dfe86cbaSAdrian Hunter b = UNSTUFF_BITS(resp, 37, 5); 173dfe86cbaSAdrian Hunter csd->erase_size = (a + 1) * (b + 1); 174dfe86cbaSAdrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 175dfe86cbaSAdrian Hunter } 176dfe86cbaSAdrian Hunter 177bd766312SPierre Ossman return 0; 1787ea239d9SPierre Ossman } 1797ea239d9SPierre Ossman 18096cf5f02SSeungwon Jeon static void mmc_select_card_type(struct mmc_card *card) 18196cf5f02SSeungwon Jeon { 18296cf5f02SSeungwon Jeon struct mmc_host *host = card->host; 1830a5b6438SSeungwon Jeon u8 card_type = card->ext_csd.raw_card_type; 1845f1a4dd0SLee Jones u32 caps = host->caps, caps2 = host->caps2; 185577fb131SSeungwon Jeon unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; 1862415c0efSSeungwon Jeon unsigned int avail_type = 0; 18796cf5f02SSeungwon Jeon 18896cf5f02SSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 1892415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_26) { 1902415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_26_MAX_DTR; 1912415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_26; 1922415c0efSSeungwon Jeon } 1932415c0efSSeungwon Jeon 1942415c0efSSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 1952415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_52) { 19696cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_52_MAX_DTR; 1972415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_52; 1982415c0efSSeungwon Jeon } 19996cf5f02SSeungwon Jeon 2002415c0efSSeungwon Jeon if (caps & MMC_CAP_1_8V_DDR && 2012415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { 20296cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2032415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; 2042415c0efSSeungwon Jeon } 20596cf5f02SSeungwon Jeon 2062415c0efSSeungwon Jeon if (caps & MMC_CAP_1_2V_DDR && 2072415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 2082415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2092415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; 2102415c0efSSeungwon Jeon } 2112415c0efSSeungwon Jeon 2122415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_8V_SDR && 2132415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { 214577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2152415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; 2162415c0efSSeungwon Jeon } 2172415c0efSSeungwon Jeon 2182415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_2V_SDR && 2192415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { 220577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2212415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; 2222415c0efSSeungwon Jeon } 22396cf5f02SSeungwon Jeon 2240a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_8V && 2250a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { 2260a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2270a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; 2280a5b6438SSeungwon Jeon } 2290a5b6438SSeungwon Jeon 2300a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_2V && 2310a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { 2320a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2330a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; 2340a5b6438SSeungwon Jeon } 2350a5b6438SSeungwon Jeon 23696cf5f02SSeungwon Jeon card->ext_csd.hs_max_dtr = hs_max_dtr; 237577fb131SSeungwon Jeon card->ext_csd.hs200_max_dtr = hs200_max_dtr; 2382415c0efSSeungwon Jeon card->mmc_avail_type = avail_type; 23996cf5f02SSeungwon Jeon } 24096cf5f02SSeungwon Jeon 241b4493eeaSGrégory Soutadé static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) 242b4493eeaSGrégory Soutadé { 243994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 244994324bbSGrégory Soutadé 245994324bbSGrégory Soutadé /* 246994324bbSGrégory Soutadé * Disable these attributes by default 247994324bbSGrégory Soutadé */ 248994324bbSGrégory Soutadé card->ext_csd.enhanced_area_offset = -EINVAL; 249994324bbSGrégory Soutadé card->ext_csd.enhanced_area_size = -EINVAL; 250b4493eeaSGrégory Soutadé 251b4493eeaSGrégory Soutadé /* 252b4493eeaSGrégory Soutadé * Enhanced area feature support -- check whether the eMMC 253b4493eeaSGrégory Soutadé * card has the Enhanced area enabled. If so, export enhanced 254b4493eeaSGrégory Soutadé * area offset and size to user by adding sysfs interface. 255b4493eeaSGrégory Soutadé */ 256b4493eeaSGrégory Soutadé if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 257b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 258994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed) { 259b4493eeaSGrégory Soutadé hc_erase_grp_sz = 260b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 261b4493eeaSGrégory Soutadé hc_wp_grp_sz = 262b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 263b4493eeaSGrégory Soutadé 264b4493eeaSGrégory Soutadé /* 265b4493eeaSGrégory Soutadé * calculate the enhanced data area offset, in bytes 266b4493eeaSGrégory Soutadé */ 267b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset = 268b4493eeaSGrégory Soutadé (ext_csd[139] << 24) + (ext_csd[138] << 16) + 269b4493eeaSGrégory Soutadé (ext_csd[137] << 8) + ext_csd[136]; 270b4493eeaSGrégory Soutadé if (mmc_card_blockaddr(card)) 271b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset <<= 9; 272b4493eeaSGrégory Soutadé /* 273b4493eeaSGrégory Soutadé * calculate the enhanced data area size, in kilobytes 274b4493eeaSGrégory Soutadé */ 275b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size = 276b4493eeaSGrégory Soutadé (ext_csd[142] << 16) + (ext_csd[141] << 8) + 277b4493eeaSGrégory Soutadé ext_csd[140]; 278b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size *= 279b4493eeaSGrégory Soutadé (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 280b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size <<= 9; 281b4493eeaSGrégory Soutadé } else { 282994324bbSGrégory Soutadé pr_warn("%s: defines enhanced area without partition setting complete\n", 283994324bbSGrégory Soutadé mmc_hostname(card->host)); 284994324bbSGrégory Soutadé } 285b4493eeaSGrégory Soutadé } 286b4493eeaSGrégory Soutadé } 287b4493eeaSGrégory Soutadé 288b4493eeaSGrégory Soutadé static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) 289b4493eeaSGrégory Soutadé { 290b4493eeaSGrégory Soutadé int idx; 291994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 292994324bbSGrégory Soutadé unsigned int part_size; 293b4493eeaSGrégory Soutadé 294b4493eeaSGrégory Soutadé /* 295b4493eeaSGrégory Soutadé * General purpose partition feature support -- 296b4493eeaSGrégory Soutadé * If ext_csd has the size of general purpose partitions, 297b4493eeaSGrégory Soutadé * set size, part_cfg, partition name in mmc_part. 298b4493eeaSGrégory Soutadé */ 299b4493eeaSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 300b4493eeaSGrégory Soutadé EXT_CSD_PART_SUPPORT_PART_EN) { 301b4493eeaSGrégory Soutadé hc_erase_grp_sz = 302b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 303b4493eeaSGrégory Soutadé hc_wp_grp_sz = 304b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 305b4493eeaSGrégory Soutadé 306b4493eeaSGrégory Soutadé for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 307b4493eeaSGrégory Soutadé if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 308b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 309b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 310b4493eeaSGrégory Soutadé continue; 311994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed == 0) { 312994324bbSGrégory Soutadé pr_warn("%s: has partition size defined without partition complete\n", 313994324bbSGrégory Soutadé mmc_hostname(card->host)); 314994324bbSGrégory Soutadé break; 315994324bbSGrégory Soutadé } 316b4493eeaSGrégory Soutadé part_size = 317b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 318b4493eeaSGrégory Soutadé << 16) + 319b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 320b4493eeaSGrégory Soutadé << 8) + 321b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 322b4493eeaSGrégory Soutadé part_size *= (size_t)(hc_erase_grp_sz * 323b4493eeaSGrégory Soutadé hc_wp_grp_sz); 324b4493eeaSGrégory Soutadé mmc_part_add(card, part_size << 19, 325b4493eeaSGrégory Soutadé EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 326b4493eeaSGrégory Soutadé "gp%d", idx, false, 327b4493eeaSGrégory Soutadé MMC_BLK_DATA_AREA_GP); 328b4493eeaSGrégory Soutadé } 329b4493eeaSGrégory Soutadé } 330b4493eeaSGrégory Soutadé } 331b4493eeaSGrégory Soutadé 33208ee80ccSPhilip Rakity /* 33308ee80ccSPhilip Rakity * Decode extended CSD. 33408ee80ccSPhilip Rakity */ 335076ec38aSUlf Hansson static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) 33608ee80ccSPhilip Rakity { 337e0c368d5SNamjae Jeon int err = 0, idx; 338e0c368d5SNamjae Jeon unsigned int part_size; 33908ee80ccSPhilip Rakity 3406da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 341f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 3426da24b78SKyungmin Park if (card->csd.structure == 3) { 343f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 344a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 3458fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 346f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 3476da24b78SKyungmin Park err = -EINVAL; 3486da24b78SKyungmin Park goto out; 3496da24b78SKyungmin Park } 3506da24b78SKyungmin Park } 3516da24b78SKyungmin Park 35203a59437SRomain Izard /* 35303a59437SRomain Izard * The EXT_CSD format is meant to be forward compatible. As long 35403a59437SRomain Izard * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV 35503a59437SRomain Izard * are authorized, see JEDEC JESD84-B50 section B.8. 35603a59437SRomain Izard */ 3576da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 358d7604d76SPierre Ossman 359f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 360f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 361f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 362f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 363b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 3647ea239d9SPierre Ossman card->ext_csd.sectors = 3657ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 3667ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 3677ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 3687ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 369fc8a0985SHanumath Prasad 370fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 371fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 3727ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 373d7604d76SPierre Ossman } 37496cf5f02SSeungwon Jeon 375f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 37696cf5f02SSeungwon Jeon mmc_select_card_type(card); 3777ea239d9SPierre Ossman 378f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 379f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 380f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 381f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 382f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 383b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 384b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 385371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 386371a689fSAndrei Warkentin 387371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 388371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 389b1ebe384SJarkko Lavinen 390b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 391b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 392b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 393b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 394dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 395dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 396dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 397dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 398dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 399dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 400f4c5522bSAndrei Warkentin 401f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 402371a689fSAndrei Warkentin 403371a689fSAndrei Warkentin /* 404371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 405371a689fSAndrei Warkentin * multiples of 128K. 406371a689fSAndrei Warkentin */ 407e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 408e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 409e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 410e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 411e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 412add710eaSJohan Rudholm "boot%d", idx, true, 413add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 414e0c368d5SNamjae Jeon } 415e0c368d5SNamjae Jeon } 416b1ebe384SJarkko Lavinen } 417b1ebe384SJarkko Lavinen 418f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 419dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 420f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 421f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 422f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 423f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 424f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 425f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 426f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 427f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 428836dc2feSPhilip Rakity card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 429dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 43069803d4fSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & 43169803d4fSGrégory Soutadé EXT_CSD_PART_SETTING_COMPLETED) 43269803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 1; 43369803d4fSGrégory Soutadé else 43469803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 0; 43569803d4fSGrégory Soutadé 436b4493eeaSGrégory Soutadé mmc_manage_enhanced_area(card, ext_csd); 437709de99dSChuanxiao Dong 438b4493eeaSGrégory Soutadé mmc_manage_gp_partitions(card, ext_csd); 439e0c368d5SNamjae Jeon 440dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 441dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 442dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 443dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 444dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 445dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 446dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 447dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 448add710eaSJohan Rudholm 449add710eaSJohan Rudholm /* 450add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 451add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 452add710eaSJohan Rudholm * take into account the value of boot_locked below. 453add710eaSJohan Rudholm */ 454add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 455add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 45660443712SFredrik Soderstedt 45760443712SFredrik Soderstedt /* Save power class values */ 45860443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_195 = 45960443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_195]; 46060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_195 = 46160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_195]; 46260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_360 = 46360443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_360]; 46460443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_360 = 46560443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_360]; 46660443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_195 = 46760443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_195]; 46860443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_360 = 46960443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_360]; 47060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_195 = 47160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; 47260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_360 = 47360443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; 4740a5b6438SSeungwon Jeon card->ext_csd.raw_pwr_cl_ddr_200_360 = 4750a5b6438SSeungwon Jeon ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; 476dfe86cbaSAdrian Hunter } 477dfe86cbaSAdrian Hunter 478b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 4797c4f10acSRomain Izard /* Adjust production date as per JEDEC JESD84-B451 */ 4807c4f10acSRomain Izard if (card->cid.year < 2010) 4817c4f10acSRomain Izard card->cid.year += 16; 4827c4f10acSRomain Izard 483950d56acSJaehoon Chung /* check whether the eMMC card supports BKOPS */ 484950d56acSJaehoon Chung if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { 485950d56acSJaehoon Chung card->ext_csd.bkops = 1; 4860501be64SAlexey Skidanov card->ext_csd.man_bkops_en = 4870501be64SAlexey Skidanov (ext_csd[EXT_CSD_BKOPS_EN] & 4880501be64SAlexey Skidanov EXT_CSD_MANUAL_BKOPS_MASK); 489950d56acSJaehoon Chung card->ext_csd.raw_bkops_status = 490950d56acSJaehoon Chung ext_csd[EXT_CSD_BKOPS_STATUS]; 4910501be64SAlexey Skidanov if (!card->ext_csd.man_bkops_en) 4920501be64SAlexey Skidanov pr_info("%s: MAN_BKOPS_EN bit is not set\n", 493950d56acSJaehoon Chung mmc_hostname(card->host)); 494950d56acSJaehoon Chung } 495950d56acSJaehoon Chung 496eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 497eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { 498eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 499eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 500eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 501eb0d8f13SJaehoon Chung else 502eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 503eb0d8f13SJaehoon Chung /* 504eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 505eb0d8f13SJaehoon Chung * a command interrupted by HPI 506eb0d8f13SJaehoon Chung */ 507eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 508eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 509eb0d8f13SJaehoon Chung } 510eb0d8f13SJaehoon Chung 511f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 512b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 513090d25feSLoic Pallardy 514090d25feSLoic Pallardy /* 515090d25feSLoic Pallardy * RPMB regions are defined in multiples of 128K. 516090d25feSLoic Pallardy */ 517090d25feSLoic Pallardy card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; 518d0123ccaSBalaji T K if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { 519090d25feSLoic Pallardy mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, 520090d25feSLoic Pallardy EXT_CSD_PART_CONFIG_ACC_RPMB, 521090d25feSLoic Pallardy "rpmb", 0, false, 522090d25feSLoic Pallardy MMC_BLK_DATA_AREA_RPMB); 523090d25feSLoic Pallardy } 524b2499518SAdrian Hunter } 525f4c5522bSAndrei Warkentin 5265238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 527dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 528dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 529dfe86cbaSAdrian Hunter else 530dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 531dfe86cbaSAdrian Hunter 532336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 533bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 534336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 535336c716aSSeungwon Jeon 536b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 537b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 538bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 539bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 540b23cf0bdSSeungwon Jeon 541881d1c25SSeungwon Jeon card->ext_csd.cache_size = 542881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 543881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 544881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 545881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 5464265900eSSaugata Das 5474265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 5484265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 5494265900eSSaugata Das else 5504265900eSSaugata Das card->ext_csd.data_sector_size = 512; 5514265900eSSaugata Das 5524265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 5534265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 5544265900eSSaugata Das card->ext_csd.data_tag_unit_size = 5554265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 5564265900eSSaugata Das (card->ext_csd.data_sector_size); 5574265900eSSaugata Das } else { 5584265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 5594265900eSSaugata Das } 560abd9ac14SSeungwon Jeon 561abd9ac14SSeungwon Jeon card->ext_csd.max_packed_writes = 562abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_WRITES]; 563abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads = 564abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_READS]; 565a5075eb9SSaugata Das } else { 566a5075eb9SSaugata Das card->ext_csd.data_sector_size = 512; 567336c716aSSeungwon Jeon } 568881d1c25SSeungwon Jeon 5690f762426SGwendal Grignou /* eMMC v5 or later */ 5700f762426SGwendal Grignou if (card->ext_csd.rev >= 7) { 5710f762426SGwendal Grignou memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], 5720f762426SGwendal Grignou MMC_FIRMWARE_LEN); 5730f762426SGwendal Grignou card->ext_csd.ffu_capable = 5740f762426SGwendal Grignou (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && 5750f762426SGwendal Grignou !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); 5760f762426SGwendal Grignou } 5777ea239d9SPierre Ossman out: 57808ee80ccSPhilip Rakity return err; 57908ee80ccSPhilip Rakity } 5807ea239d9SPierre Ossman 581076ec38aSUlf Hansson static int mmc_read_ext_csd(struct mmc_card *card) 582076ec38aSUlf Hansson { 583c197787cSUlf Hansson u8 *ext_csd; 584076ec38aSUlf Hansson int err; 585076ec38aSUlf Hansson 586c197787cSUlf Hansson if (!mmc_can_ext_csd(card)) 587c197787cSUlf Hansson return 0; 588c197787cSUlf Hansson 589076ec38aSUlf Hansson err = mmc_get_ext_csd(card, &ext_csd); 590c197787cSUlf Hansson if (err) { 591c197787cSUlf Hansson /* If the host or the card can't do the switch, 592c197787cSUlf Hansson * fail more gracefully. */ 593c197787cSUlf Hansson if ((err != -EINVAL) 594c197787cSUlf Hansson && (err != -ENOSYS) 595c197787cSUlf Hansson && (err != -EFAULT)) 596076ec38aSUlf Hansson return err; 597076ec38aSUlf Hansson 598c197787cSUlf Hansson /* 599c197787cSUlf Hansson * High capacity cards should have this "magic" size 600c197787cSUlf Hansson * stored in their CSD. 601c197787cSUlf Hansson */ 602c197787cSUlf Hansson if (card->csd.capacity == (4096 * 512)) { 603c197787cSUlf Hansson pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", 604c197787cSUlf Hansson mmc_hostname(card->host)); 605c197787cSUlf Hansson } else { 606c197787cSUlf Hansson pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", 607c197787cSUlf Hansson mmc_hostname(card->host)); 608c197787cSUlf Hansson err = 0; 609c197787cSUlf Hansson } 610c197787cSUlf Hansson 611c197787cSUlf Hansson return err; 612c197787cSUlf Hansson } 613c197787cSUlf Hansson 614076ec38aSUlf Hansson err = mmc_decode_ext_csd(card, ext_csd); 615076ec38aSUlf Hansson kfree(ext_csd); 616076ec38aSUlf Hansson return err; 617076ec38aSUlf Hansson } 618076ec38aSUlf Hansson 619f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 62008ee80ccSPhilip Rakity { 62108ee80ccSPhilip Rakity u8 *bw_ext_csd; 62208ee80ccSPhilip Rakity int err; 62308ee80ccSPhilip Rakity 624f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 625f39b2dd9SPhilip Rakity return 0; 62608ee80ccSPhilip Rakity 627f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 628c197787cSUlf Hansson if (err) 629c197787cSUlf Hansson return err; 63008ee80ccSPhilip Rakity 63108ee80ccSPhilip Rakity /* only compare read only fields */ 632dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 63308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 634f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 63508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 636f39b2dd9SPhilip Rakity (card->ext_csd.rev == 63708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 638f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 63908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 640f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 64108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 642f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 64308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 644f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 64508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 646f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 64708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 648f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 64908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 650f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 65108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 652f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 65308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 654f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 65508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 656f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 65708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 658f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 659f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 660f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 661f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 662f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 663f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 664f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 66560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && 66660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_195 == 66760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && 66860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_195 == 66960443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && 67060443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_360 == 67160443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && 67260443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_360 == 67360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && 67460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_195 == 67560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && 67660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_360 == 67760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && 67860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_195 == 67960443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && 68060443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_360 == 6810a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && 6820a5b6438SSeungwon Jeon (card->ext_csd.raw_pwr_cl_ddr_200_360 == 6830a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); 6840a5b6438SSeungwon Jeon 68508ee80ccSPhilip Rakity if (err) 68608ee80ccSPhilip Rakity err = -EINVAL; 68708ee80ccSPhilip Rakity 68800b41b58SUlf Hansson kfree(bw_ext_csd); 6897ea239d9SPierre Ossman return err; 6907ea239d9SPierre Ossman } 6917ea239d9SPierre Ossman 69251ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 69351ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 69451ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 69551ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 69651ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 697dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 698dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 6990f762426SGwendal Grignou MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); 70051ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 70151ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 70251ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 70351ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 70451e7e8b6SBernie Thompson MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); 70551ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 706709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 707709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 708709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 709188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 710188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 71151ec92e2SPierre Ossman 7120f762426SGwendal Grignou static ssize_t mmc_fwrev_show(struct device *dev, 7130f762426SGwendal Grignou struct device_attribute *attr, 7140f762426SGwendal Grignou char *buf) 7150f762426SGwendal Grignou { 7160f762426SGwendal Grignou struct mmc_card *card = mmc_dev_to_card(dev); 7170f762426SGwendal Grignou 7180f762426SGwendal Grignou if (card->ext_csd.rev < 7) { 7190f762426SGwendal Grignou return sprintf(buf, "0x%x\n", card->cid.fwrev); 7200f762426SGwendal Grignou } else { 7210f762426SGwendal Grignou return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, 7220f762426SGwendal Grignou card->ext_csd.fwrev); 7230f762426SGwendal Grignou } 7240f762426SGwendal Grignou } 7250f762426SGwendal Grignou 7260f762426SGwendal Grignou static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); 7270f762426SGwendal Grignou 72851ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 72951ec92e2SPierre Ossman &dev_attr_cid.attr, 73051ec92e2SPierre Ossman &dev_attr_csd.attr, 73151ec92e2SPierre Ossman &dev_attr_date.attr, 732dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 733dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 73451ec92e2SPierre Ossman &dev_attr_fwrev.attr, 7350f762426SGwendal Grignou &dev_attr_ffu_capable.attr, 73651ec92e2SPierre Ossman &dev_attr_hwrev.attr, 73751ec92e2SPierre Ossman &dev_attr_manfid.attr, 73851ec92e2SPierre Ossman &dev_attr_name.attr, 73951ec92e2SPierre Ossman &dev_attr_oemid.attr, 74051e7e8b6SBernie Thompson &dev_attr_prv.attr, 74151ec92e2SPierre Ossman &dev_attr_serial.attr, 742709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 743709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 744188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 745188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 74651ec92e2SPierre Ossman NULL, 74751ec92e2SPierre Ossman }; 748d1e58212SAxel Lin ATTRIBUTE_GROUPS(mmc_std); 74951ec92e2SPierre Ossman 75051ec92e2SPierre Ossman static struct device_type mmc_type = { 751d1e58212SAxel Lin .groups = mmc_std_groups, 75251ec92e2SPierre Ossman }; 75351ec92e2SPierre Ossman 7547ea239d9SPierre Ossman /* 755b87d8dbfSGirish K S * Select the PowerClass for the current bus width 756b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 757b87d8dbfSGirish K S * extended CSD register, select it by executing the 758b87d8dbfSGirish K S * mmc_switch command. 759b87d8dbfSGirish K S */ 7602385049dSSeungwon Jeon static int __mmc_select_powerclass(struct mmc_card *card, 76160443712SFredrik Soderstedt unsigned int bus_width) 762b87d8dbfSGirish K S { 7632385049dSSeungwon Jeon struct mmc_host *host = card->host; 7642385049dSSeungwon Jeon struct mmc_ext_csd *ext_csd = &card->ext_csd; 76560443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 7662385049dSSeungwon Jeon int err = 0; 767b87d8dbfSGirish K S 768b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 769b87d8dbfSGirish K S case MMC_VDD_165_195: 7702385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 7712385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_195; 7722385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 77360443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 7742385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_195 : 7752385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_195; 7762385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 7772385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_200_195; 778b87d8dbfSGirish K S break; 77993fc5a47SSubhash Jadavani case MMC_VDD_27_28: 78093fc5a47SSubhash Jadavani case MMC_VDD_28_29: 78193fc5a47SSubhash Jadavani case MMC_VDD_29_30: 78293fc5a47SSubhash Jadavani case MMC_VDD_30_31: 78393fc5a47SSubhash Jadavani case MMC_VDD_31_32: 784b87d8dbfSGirish K S case MMC_VDD_32_33: 785b87d8dbfSGirish K S case MMC_VDD_33_34: 786b87d8dbfSGirish K S case MMC_VDD_34_35: 787b87d8dbfSGirish K S case MMC_VDD_35_36: 7882385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 7892385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_360; 7902385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 79160443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 7922385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_360 : 7932385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_360; 7942385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 7950a5b6438SSeungwon Jeon pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? 7960a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_ddr_200_360 : 7970a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_200_360; 798b87d8dbfSGirish K S break; 799b87d8dbfSGirish K S default: 8006606110dSJoe Perches pr_warn("%s: Voltage range not supported for power class\n", 8016606110dSJoe Perches mmc_hostname(host)); 802b87d8dbfSGirish K S return -EINVAL; 803b87d8dbfSGirish K S } 804b87d8dbfSGirish K S 805b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 806b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 807b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 808b87d8dbfSGirish K S else 809b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 810b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 811b87d8dbfSGirish K S 812b87d8dbfSGirish K S /* If the power class is different from the default value */ 813b87d8dbfSGirish K S if (pwrclass_val > 0) { 814b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 815b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 816b87d8dbfSGirish K S pwrclass_val, 81771fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 818b87d8dbfSGirish K S } 819b87d8dbfSGirish K S 820b87d8dbfSGirish K S return err; 821b87d8dbfSGirish K S } 822b87d8dbfSGirish K S 8232385049dSSeungwon Jeon static int mmc_select_powerclass(struct mmc_card *card) 8242385049dSSeungwon Jeon { 8252385049dSSeungwon Jeon struct mmc_host *host = card->host; 8262385049dSSeungwon Jeon u32 bus_width, ext_csd_bits; 8272385049dSSeungwon Jeon int err, ddr; 8282385049dSSeungwon Jeon 8292385049dSSeungwon Jeon /* Power class selection is supported for versions >= 4.0 */ 830148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 8312385049dSSeungwon Jeon return 0; 8322385049dSSeungwon Jeon 8332385049dSSeungwon Jeon bus_width = host->ios.bus_width; 8342385049dSSeungwon Jeon /* Power class values are defined only for 4/8 bit bus */ 8352385049dSSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 8362385049dSSeungwon Jeon return 0; 8372385049dSSeungwon Jeon 8382385049dSSeungwon Jeon ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; 8392385049dSSeungwon Jeon if (ddr) 8402385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 8412385049dSSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 8422385049dSSeungwon Jeon else 8432385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 8442385049dSSeungwon Jeon EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 8452385049dSSeungwon Jeon 8462385049dSSeungwon Jeon err = __mmc_select_powerclass(card, ext_csd_bits); 8472385049dSSeungwon Jeon if (err) 8482385049dSSeungwon Jeon pr_warn("%s: power class selection to bus width %d ddr %d failed\n", 8492385049dSSeungwon Jeon mmc_hostname(host), 1 << bus_width, ddr); 8502385049dSSeungwon Jeon 8512385049dSSeungwon Jeon return err; 8522385049dSSeungwon Jeon } 8532385049dSSeungwon Jeon 854b87d8dbfSGirish K S /* 855577fb131SSeungwon Jeon * Set the bus speed for the selected speed mode. 856a4924c71SGirish K S */ 857577fb131SSeungwon Jeon static void mmc_set_bus_speed(struct mmc_card *card) 858a4924c71SGirish K S { 859577fb131SSeungwon Jeon unsigned int max_dtr = (unsigned int)-1; 860577fb131SSeungwon Jeon 8610a5b6438SSeungwon Jeon if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && 8620a5b6438SSeungwon Jeon max_dtr > card->ext_csd.hs200_max_dtr) 863577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs200_max_dtr; 864577fb131SSeungwon Jeon else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) 865577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs_max_dtr; 866577fb131SSeungwon Jeon else if (max_dtr > card->csd.max_dtr) 867577fb131SSeungwon Jeon max_dtr = card->csd.max_dtr; 868577fb131SSeungwon Jeon 869577fb131SSeungwon Jeon mmc_set_clock(card->host, max_dtr); 870577fb131SSeungwon Jeon } 871577fb131SSeungwon Jeon 872577fb131SSeungwon Jeon /* 873577fb131SSeungwon Jeon * Select the bus width amoung 4-bit and 8-bit(SDR). 874577fb131SSeungwon Jeon * If the bus width is changed successfully, return the selected width value. 875577fb131SSeungwon Jeon * Zero is returned instead of error value if the wide width is not supported. 876577fb131SSeungwon Jeon */ 877577fb131SSeungwon Jeon static int mmc_select_bus_width(struct mmc_card *card) 878577fb131SSeungwon Jeon { 879a4924c71SGirish K S static unsigned ext_csd_bits[] = { 880a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 881577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH_4, 882a4924c71SGirish K S }; 883a4924c71SGirish K S static unsigned bus_widths[] = { 884a4924c71SGirish K S MMC_BUS_WIDTH_8, 885577fb131SSeungwon Jeon MMC_BUS_WIDTH_4, 886a4924c71SGirish K S }; 887577fb131SSeungwon Jeon struct mmc_host *host = card->host; 888577fb131SSeungwon Jeon unsigned idx, bus_width = 0; 889577fb131SSeungwon Jeon int err = 0; 890a4924c71SGirish K S 8911c2d26e3SAlexandre Belloni if (!mmc_can_ext_csd(card) || 892577fb131SSeungwon Jeon !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) 893577fb131SSeungwon Jeon return 0; 894a4924c71SGirish K S 895577fb131SSeungwon Jeon idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; 896a4924c71SGirish K S 897a4924c71SGirish K S /* 898a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 899a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 900a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 901a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 902a4924c71SGirish K S */ 903577fb131SSeungwon Jeon for (; idx < ARRAY_SIZE(bus_widths); idx++) { 904a4924c71SGirish K S /* 905a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 906a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 907a4924c71SGirish K S * mmc switch command returns error then switch to 908a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 909a4924c71SGirish K S * bus width on the host. 910a4924c71SGirish K S */ 911a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 912a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 913a4924c71SGirish K S ext_csd_bits[idx], 914a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 915a4924c71SGirish K S if (err) 916a4924c71SGirish K S continue; 917a4924c71SGirish K S 918577fb131SSeungwon Jeon bus_width = bus_widths[idx]; 919577fb131SSeungwon Jeon mmc_set_bus_width(host, bus_width); 920a4924c71SGirish K S 921577fb131SSeungwon Jeon /* 922577fb131SSeungwon Jeon * If controller can't handle bus width test, 923577fb131SSeungwon Jeon * compare ext_csd previously read in 1 bit mode 924577fb131SSeungwon Jeon * against ext_csd at new bus width 925577fb131SSeungwon Jeon */ 926a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 927577fb131SSeungwon Jeon err = mmc_compare_ext_csds(card, bus_width); 928a4924c71SGirish K S else 929577fb131SSeungwon Jeon err = mmc_bus_test(card, bus_width); 930577fb131SSeungwon Jeon 931577fb131SSeungwon Jeon if (!err) { 932577fb131SSeungwon Jeon err = bus_width; 933a4924c71SGirish K S break; 934577fb131SSeungwon Jeon } else { 935577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d failed\n", 936577fb131SSeungwon Jeon mmc_hostname(host), ext_csd_bits[idx]); 937577fb131SSeungwon Jeon } 938a4924c71SGirish K S } 939a4924c71SGirish K S 940577fb131SSeungwon Jeon return err; 941577fb131SSeungwon Jeon } 942577fb131SSeungwon Jeon 943577fb131SSeungwon Jeon /* 944577fb131SSeungwon Jeon * Switch to the high-speed mode 945577fb131SSeungwon Jeon */ 946577fb131SSeungwon Jeon static int mmc_select_hs(struct mmc_card *card) 947577fb131SSeungwon Jeon { 948577fb131SSeungwon Jeon int err; 949577fb131SSeungwon Jeon 9504509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 951577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 95257de31f6SUlf Hansson card->ext_csd.generic_cmd6_time, 95357de31f6SUlf Hansson true, true, true); 954577fb131SSeungwon Jeon if (!err) 955577fb131SSeungwon Jeon mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 956577fb131SSeungwon Jeon 957577fb131SSeungwon Jeon return err; 958577fb131SSeungwon Jeon } 959577fb131SSeungwon Jeon 960577fb131SSeungwon Jeon /* 961577fb131SSeungwon Jeon * Activate wide bus and DDR if supported. 962577fb131SSeungwon Jeon */ 963577fb131SSeungwon Jeon static int mmc_select_hs_ddr(struct mmc_card *card) 964577fb131SSeungwon Jeon { 965577fb131SSeungwon Jeon struct mmc_host *host = card->host; 966577fb131SSeungwon Jeon u32 bus_width, ext_csd_bits; 967577fb131SSeungwon Jeon int err = 0; 968577fb131SSeungwon Jeon 969577fb131SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) 970577fb131SSeungwon Jeon return 0; 971577fb131SSeungwon Jeon 972577fb131SSeungwon Jeon bus_width = host->ios.bus_width; 973577fb131SSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 974577fb131SSeungwon Jeon return 0; 975577fb131SSeungwon Jeon 976577fb131SSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 977577fb131SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 978577fb131SSeungwon Jeon 979577fb131SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 980577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH, 981577fb131SSeungwon Jeon ext_csd_bits, 982577fb131SSeungwon Jeon card->ext_csd.generic_cmd6_time); 983577fb131SSeungwon Jeon if (err) { 9844b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width %d ddr failed\n", 985577fb131SSeungwon Jeon mmc_hostname(host), 1 << bus_width); 986577fb131SSeungwon Jeon return err; 987577fb131SSeungwon Jeon } 988577fb131SSeungwon Jeon 989577fb131SSeungwon Jeon /* 990577fb131SSeungwon Jeon * eMMC cards can support 3.3V to 1.2V i/o (vccq) 991577fb131SSeungwon Jeon * signaling. 992577fb131SSeungwon Jeon * 993577fb131SSeungwon Jeon * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 994577fb131SSeungwon Jeon * 995577fb131SSeungwon Jeon * 1.8V vccq at 3.3V core voltage (vcc) is not required 996577fb131SSeungwon Jeon * in the JEDEC spec for DDR. 997577fb131SSeungwon Jeon * 998312449efSChuanxiao.Dong * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all 999312449efSChuanxiao.Dong * host controller can support this, like some of the SDHCI 1000312449efSChuanxiao.Dong * controller which connect to an eMMC device. Some of these 1001312449efSChuanxiao.Dong * host controller still needs to use 1.8v vccq for supporting 1002312449efSChuanxiao.Dong * DDR mode. 1003312449efSChuanxiao.Dong * 1004312449efSChuanxiao.Dong * So the sequence will be: 1005312449efSChuanxiao.Dong * if (host and device can both support 1.2v IO) 1006312449efSChuanxiao.Dong * use 1.2v IO; 1007312449efSChuanxiao.Dong * else if (host and device can both support 1.8v IO) 1008312449efSChuanxiao.Dong * use 1.8v IO; 1009312449efSChuanxiao.Dong * so if host and device can only support 3.3v IO, this is the 1010312449efSChuanxiao.Dong * last choice. 1011577fb131SSeungwon Jeon * 1012577fb131SSeungwon Jeon * WARNING: eMMC rules are NOT the same as SD DDR 1013577fb131SSeungwon Jeon */ 1014312449efSChuanxiao.Dong err = -EINVAL; 1015312449efSChuanxiao.Dong if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) 1016312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1017577fb131SSeungwon Jeon 1018312449efSChuanxiao.Dong if (err && (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V)) 1019312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1020312449efSChuanxiao.Dong 1021312449efSChuanxiao.Dong /* make sure vccq is 3.3v after switching disaster */ 1022312449efSChuanxiao.Dong if (err) 1023312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); 1024312449efSChuanxiao.Dong 1025312449efSChuanxiao.Dong if (!err) 1026577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_DDR52); 1027577fb131SSeungwon Jeon 1028577fb131SSeungwon Jeon return err; 1029577fb131SSeungwon Jeon } 1030577fb131SSeungwon Jeon 10310a5b6438SSeungwon Jeon static int mmc_select_hs400(struct mmc_card *card) 10320a5b6438SSeungwon Jeon { 10330a5b6438SSeungwon Jeon struct mmc_host *host = card->host; 10340a5b6438SSeungwon Jeon int err = 0; 10350a5b6438SSeungwon Jeon 10360a5b6438SSeungwon Jeon /* 10370a5b6438SSeungwon Jeon * HS400 mode requires 8-bit bus width 10380a5b6438SSeungwon Jeon */ 10390a5b6438SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 10400a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8)) 10410a5b6438SSeungwon Jeon return 0; 10420a5b6438SSeungwon Jeon 10430a5b6438SSeungwon Jeon /* 10440a5b6438SSeungwon Jeon * Before switching to dual data rate operation for HS400, 10450a5b6438SSeungwon Jeon * it is required to convert from HS200 mode to HS mode. 10460a5b6438SSeungwon Jeon */ 10470a5b6438SSeungwon Jeon mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 10480a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 10490a5b6438SSeungwon Jeon 10500a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10510a5b6438SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 10520a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time, 10530a5b6438SSeungwon Jeon true, true, true); 10540a5b6438SSeungwon Jeon if (err) { 10554b75bffcSAndrew Gabbasov pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", 10560a5b6438SSeungwon Jeon mmc_hostname(host), err); 10570a5b6438SSeungwon Jeon return err; 10580a5b6438SSeungwon Jeon } 10590a5b6438SSeungwon Jeon 10600a5b6438SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10610a5b6438SSeungwon Jeon EXT_CSD_BUS_WIDTH, 10620a5b6438SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8, 10630a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time); 10640a5b6438SSeungwon Jeon if (err) { 10654b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width for hs400 failed, err:%d\n", 10660a5b6438SSeungwon Jeon mmc_hostname(host), err); 10670a5b6438SSeungwon Jeon return err; 10680a5b6438SSeungwon Jeon } 10690a5b6438SSeungwon Jeon 10700a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10710a5b6438SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS400, 10720a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time, 10730a5b6438SSeungwon Jeon true, true, true); 10740a5b6438SSeungwon Jeon if (err) { 10754b75bffcSAndrew Gabbasov pr_err("%s: switch to hs400 failed, err:%d\n", 10760a5b6438SSeungwon Jeon mmc_hostname(host), err); 10770a5b6438SSeungwon Jeon return err; 10780a5b6438SSeungwon Jeon } 10790a5b6438SSeungwon Jeon 10800a5b6438SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS400); 10810a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 10820a5b6438SSeungwon Jeon 10830a5b6438SSeungwon Jeon return 0; 10840a5b6438SSeungwon Jeon } 10850a5b6438SSeungwon Jeon 1086577fb131SSeungwon Jeon /* 1087577fb131SSeungwon Jeon * For device supporting HS200 mode, the following sequence 1088577fb131SSeungwon Jeon * should be done before executing the tuning process. 1089577fb131SSeungwon Jeon * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) 1090577fb131SSeungwon Jeon * 2. switch to HS200 mode 1091577fb131SSeungwon Jeon * 3. set the clock to > 52Mhz and <=200MHz 1092577fb131SSeungwon Jeon */ 1093577fb131SSeungwon Jeon static int mmc_select_hs200(struct mmc_card *card) 1094577fb131SSeungwon Jeon { 1095577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1096577fb131SSeungwon Jeon int err = -EINVAL; 1097577fb131SSeungwon Jeon 1098577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) 1099577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1100577fb131SSeungwon Jeon 1101577fb131SSeungwon Jeon if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) 1102577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1103577fb131SSeungwon Jeon 1104577fb131SSeungwon Jeon /* If fails try again during next card power cycle */ 1105577fb131SSeungwon Jeon if (err) 1106577fb131SSeungwon Jeon goto err; 1107577fb131SSeungwon Jeon 1108577fb131SSeungwon Jeon /* 1109577fb131SSeungwon Jeon * Set the bus width(4 or 8) with host's support and 1110577fb131SSeungwon Jeon * switch to HS200 mode if bus width is set successfully. 1111577fb131SSeungwon Jeon */ 1112577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 1113577fb131SSeungwon Jeon if (!IS_ERR_VALUE(err)) { 1114577fb131SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1115577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS200, 1116577fb131SSeungwon Jeon card->ext_csd.generic_cmd6_time, 1117577fb131SSeungwon Jeon true, true, true); 1118577fb131SSeungwon Jeon if (!err) 1119577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS200); 1120577fb131SSeungwon Jeon } 1121a4924c71SGirish K S err: 1122a4924c71SGirish K S return err; 1123a4924c71SGirish K S } 1124a4924c71SGirish K S 1125a4924c71SGirish K S /* 1126577fb131SSeungwon Jeon * Activate High Speed or HS200 mode if supported. 1127577fb131SSeungwon Jeon */ 1128577fb131SSeungwon Jeon static int mmc_select_timing(struct mmc_card *card) 1129577fb131SSeungwon Jeon { 1130577fb131SSeungwon Jeon int err = 0; 1131577fb131SSeungwon Jeon 1132148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 1133577fb131SSeungwon Jeon goto bus_speed; 1134577fb131SSeungwon Jeon 1135577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) 1136577fb131SSeungwon Jeon err = mmc_select_hs200(card); 1137577fb131SSeungwon Jeon else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) 1138577fb131SSeungwon Jeon err = mmc_select_hs(card); 1139577fb131SSeungwon Jeon 1140577fb131SSeungwon Jeon if (err && err != -EBADMSG) 1141577fb131SSeungwon Jeon return err; 1142577fb131SSeungwon Jeon 1143577fb131SSeungwon Jeon if (err) { 1144577fb131SSeungwon Jeon pr_warn("%s: switch to %s failed\n", 1145577fb131SSeungwon Jeon mmc_card_hs(card) ? "high-speed" : 1146577fb131SSeungwon Jeon (mmc_card_hs200(card) ? "hs200" : ""), 1147577fb131SSeungwon Jeon mmc_hostname(card->host)); 1148577fb131SSeungwon Jeon err = 0; 1149577fb131SSeungwon Jeon } 1150577fb131SSeungwon Jeon 1151577fb131SSeungwon Jeon bus_speed: 1152577fb131SSeungwon Jeon /* 1153577fb131SSeungwon Jeon * Set the bus speed to the selected bus timing. 1154577fb131SSeungwon Jeon * If timing is not selected, backward compatible is the default. 1155577fb131SSeungwon Jeon */ 1156577fb131SSeungwon Jeon mmc_set_bus_speed(card); 1157577fb131SSeungwon Jeon return err; 1158577fb131SSeungwon Jeon } 1159577fb131SSeungwon Jeon 1160577fb131SSeungwon Jeon /* 1161577fb131SSeungwon Jeon * Execute tuning sequence to seek the proper bus operating 11620a5b6438SSeungwon Jeon * conditions for HS200 and HS400, which sends CMD21 to the device. 1163577fb131SSeungwon Jeon */ 1164577fb131SSeungwon Jeon static int mmc_hs200_tuning(struct mmc_card *card) 1165577fb131SSeungwon Jeon { 1166577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1167577fb131SSeungwon Jeon 11680a5b6438SSeungwon Jeon /* 11690a5b6438SSeungwon Jeon * Timing should be adjusted to the HS400 target 11700a5b6438SSeungwon Jeon * operation frequency for tuning process 11710a5b6438SSeungwon Jeon */ 11720a5b6438SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 11730a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8) 11740a5b6438SSeungwon Jeon if (host->ops->prepare_hs400_tuning) 11750a5b6438SSeungwon Jeon host->ops->prepare_hs400_tuning(host, &host->ios); 11760a5b6438SSeungwon Jeon 117763e415c6SAdrian Hunter return mmc_execute_tuning(card); 1178577fb131SSeungwon Jeon } 1179577fb131SSeungwon Jeon 1180577fb131SSeungwon Jeon /* 11816abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 11826abaa0c9SPierre Ossman * 11838769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 11846abaa0c9SPierre Ossman * we're trying to reinitialise. 11857ea239d9SPierre Ossman */ 11868c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 11876abaa0c9SPierre Ossman struct mmc_card *oldcard) 11887ea239d9SPierre Ossman { 11897ea239d9SPierre Ossman struct mmc_card *card; 1190577fb131SSeungwon Jeon int err; 11917ea239d9SPierre Ossman u32 cid[4]; 1192b676f039SPhilip Rakity u32 rocr; 11937ea239d9SPierre Ossman 11947ea239d9SPierre Ossman BUG_ON(!host); 1195d84075c8SPierre Ossman WARN_ON(!host->claimed); 11967ea239d9SPierre Ossman 119744669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 119844669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 119944669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 120044669034SStefan Nilsson XK 12017ea239d9SPierre Ossman /* 12027ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 12037ea239d9SPierre Ossman * need to tell some cards to go back to the idle 12047ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 12057ea239d9SPierre Ossman * respond. 1206c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 12077ea239d9SPierre Ossman */ 12087ea239d9SPierre Ossman mmc_go_idle(host); 12097ea239d9SPierre Ossman 12107ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 1211b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 121217b0429dSPierre Ossman if (err) 12136abaa0c9SPierre Ossman goto err; 12147ea239d9SPierre Ossman 12157ea239d9SPierre Ossman /* 1216af517150SDavid Brownell * For SPI, enable CRC as appropriate. 1217af517150SDavid Brownell */ 1218af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1219af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 1220af517150SDavid Brownell if (err) 1221af517150SDavid Brownell goto err; 1222af517150SDavid Brownell } 1223af517150SDavid Brownell 1224af517150SDavid Brownell /* 12257ea239d9SPierre Ossman * Fetch CID from card. 12267ea239d9SPierre Ossman */ 1227af517150SDavid Brownell if (mmc_host_is_spi(host)) 1228af517150SDavid Brownell err = mmc_send_cid(host, cid); 1229af517150SDavid Brownell else 12307ea239d9SPierre Ossman err = mmc_all_send_cid(host, cid); 123117b0429dSPierre Ossman if (err) 12327ea239d9SPierre Ossman goto err; 12337ea239d9SPierre Ossman 12346abaa0c9SPierre Ossman if (oldcard) { 1235adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 1236adf66a0dSPierre Ossman err = -ENOENT; 12376abaa0c9SPierre Ossman goto err; 1238adf66a0dSPierre Ossman } 12396abaa0c9SPierre Ossman 12406abaa0c9SPierre Ossman card = oldcard; 12416abaa0c9SPierre Ossman } else { 12427ea239d9SPierre Ossman /* 12437ea239d9SPierre Ossman * Allocate card structure. 12447ea239d9SPierre Ossman */ 124551ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 1246adf66a0dSPierre Ossman if (IS_ERR(card)) { 1247adf66a0dSPierre Ossman err = PTR_ERR(card); 12487ea239d9SPierre Ossman goto err; 1249adf66a0dSPierre Ossman } 12507ea239d9SPierre Ossman 125169041150SUlf Hansson card->ocr = ocr; 12527ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 12537ea239d9SPierre Ossman card->rca = 1; 12547ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 12556abaa0c9SPierre Ossman } 12567ea239d9SPierre Ossman 12577ea239d9SPierre Ossman /* 1258eac86321SDoug Anderson * Call the optional HC's init_card function to handle quirks. 1259eac86321SDoug Anderson */ 1260eac86321SDoug Anderson if (host->ops->init_card) 1261eac86321SDoug Anderson host->ops->init_card(host, card); 1262eac86321SDoug Anderson 1263eac86321SDoug Anderson /* 1264af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 12657ea239d9SPierre Ossman */ 1266af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 12677ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 126817b0429dSPierre Ossman if (err) 12697ea239d9SPierre Ossman goto free_card; 12707ea239d9SPierre Ossman 12717ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 1272af517150SDavid Brownell } 12737ea239d9SPierre Ossman 12746abaa0c9SPierre Ossman if (!oldcard) { 12757ea239d9SPierre Ossman /* 12767ea239d9SPierre Ossman * Fetch CSD from card. 12777ea239d9SPierre Ossman */ 12787ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 127917b0429dSPierre Ossman if (err) 12807ea239d9SPierre Ossman goto free_card; 12817ea239d9SPierre Ossman 1282bd766312SPierre Ossman err = mmc_decode_csd(card); 1283adf66a0dSPierre Ossman if (err) 1284bd766312SPierre Ossman goto free_card; 1285bd766312SPierre Ossman err = mmc_decode_cid(card); 1286adf66a0dSPierre Ossman if (err) 1287bd766312SPierre Ossman goto free_card; 12886abaa0c9SPierre Ossman } 12897ea239d9SPierre Ossman 12907ea239d9SPierre Ossman /* 12913d705d14SSascha Hauer * handling only for cards supporting DSR and hosts requesting 12923d705d14SSascha Hauer * DSR configuration 12933d705d14SSascha Hauer */ 12943d705d14SSascha Hauer if (card->csd.dsr_imp && host->dsr_req) 12953d705d14SSascha Hauer mmc_set_dsr(host); 12963d705d14SSascha Hauer 12973d705d14SSascha Hauer /* 129889a73cf5SPierre Ossman * Select card, as all following commands rely on that. 12997ea239d9SPierre Ossman */ 1300af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 13017ea239d9SPierre Ossman err = mmc_select_card(card); 130217b0429dSPierre Ossman if (err) 13037ea239d9SPierre Ossman goto free_card; 1304af517150SDavid Brownell } 13057ea239d9SPierre Ossman 13066abaa0c9SPierre Ossman if (!oldcard) { 1307076ec38aSUlf Hansson /* Read extended CSD. */ 1308076ec38aSUlf Hansson err = mmc_read_ext_csd(card); 130917b0429dSPierre Ossman if (err) 13107ea239d9SPierre Ossman goto free_card; 1311b676f039SPhilip Rakity 1312b676f039SPhilip Rakity /* If doing byte addressing, check if required to do sector 1313b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 1314b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 1315b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 1316b676f039SPhilip Rakity */ 1317b676f039SPhilip Rakity if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) 1318b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 1319b676f039SPhilip Rakity 1320dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 1321dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 13226abaa0c9SPierre Ossman } 13237ea239d9SPierre Ossman 13247ea239d9SPierre Ossman /* 1325709de99dSChuanxiao Dong * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF 1326709de99dSChuanxiao Dong * bit. This bit will be lost every time after a reset or power off. 1327709de99dSChuanxiao Dong */ 132869803d4fSGrégory Soutadé if (card->ext_csd.partition_setting_completed || 132983bb24aaSAdrian Hunter (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { 1330709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1331b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1332b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1333709de99dSChuanxiao Dong 1334709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1335709de99dSChuanxiao Dong goto free_card; 1336709de99dSChuanxiao Dong 1337709de99dSChuanxiao Dong if (err) { 1338709de99dSChuanxiao Dong err = 0; 1339709de99dSChuanxiao Dong /* 1340709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1341709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1342709de99dSChuanxiao Dong * during next time reinit 1343709de99dSChuanxiao Dong */ 1344709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1345709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1346709de99dSChuanxiao Dong } else { 1347709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1348709de99dSChuanxiao Dong /* 1349709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1350709de99dSChuanxiao Dong * This will affect the erase size, so 1351709de99dSChuanxiao Dong * here need to reset erase size 1352709de99dSChuanxiao Dong */ 1353709de99dSChuanxiao Dong mmc_set_erase_size(card); 1354709de99dSChuanxiao Dong } 1355709de99dSChuanxiao Dong } 1356709de99dSChuanxiao Dong 1357709de99dSChuanxiao Dong /* 135841e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 135941e2a489SPhilip Rakity */ 1360371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1361371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1362371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1363371a689fSAndrei Warkentin card->ext_csd.part_config, 1364371a689fSAndrei Warkentin card->ext_csd.part_time); 1365371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1366371a689fSAndrei Warkentin goto free_card; 136741e2a489SPhilip Rakity } 136841e2a489SPhilip Rakity 136941e2a489SPhilip Rakity /* 137043235679SUlf Hansson * Enable power_off_notification byte in the ext_csd register 1371bec8726aSGirish K S */ 137243235679SUlf Hansson if (card->ext_csd.rev >= 6) { 1373bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1374bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1375bec8726aSGirish K S EXT_CSD_POWER_ON, 1376bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1377bec8726aSGirish K S if (err && err != -EBADMSG) 1378bec8726aSGirish K S goto free_card; 1379bec8726aSGirish K S 138096a85d54SGirish K S /* 138196a85d54SGirish K S * The err can be -EBADMSG or 0, 138296a85d54SGirish K S * so check for success and update the flag 138396a85d54SGirish K S */ 1384bec8726aSGirish K S if (!err) 1385e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 138696a85d54SGirish K S } 1387bec8726aSGirish K S 1388bec8726aSGirish K S /* 1389577fb131SSeungwon Jeon * Select timing interface 139089a73cf5SPierre Ossman */ 1391577fb131SSeungwon Jeon err = mmc_select_timing(card); 1392577fb131SSeungwon Jeon if (err) 139389a73cf5SPierre Ossman goto free_card; 139489a73cf5SPierre Ossman 1395a4924c71SGirish K S if (mmc_card_hs200(card)) { 1396577fb131SSeungwon Jeon err = mmc_hs200_tuning(card); 13974c4cb171SPhilip Rakity if (err) 13984b75bffcSAndrew Gabbasov goto free_card; 13990a5b6438SSeungwon Jeon 14000a5b6438SSeungwon Jeon err = mmc_select_hs400(card); 14010a5b6438SSeungwon Jeon if (err) 14024b75bffcSAndrew Gabbasov goto free_card; 1403577fb131SSeungwon Jeon } else if (mmc_card_hs(card)) { 1404577fb131SSeungwon Jeon /* Select the desired bus width optionally */ 1405577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 1406577fb131SSeungwon Jeon if (!IS_ERR_VALUE(err)) { 1407577fb131SSeungwon Jeon err = mmc_select_hs_ddr(card); 1408577fb131SSeungwon Jeon if (err) 14094b75bffcSAndrew Gabbasov goto free_card; 141089a73cf5SPierre Ossman } 1411ef0b27d4SAdrian Hunter } 141289a73cf5SPierre Ossman 1413881d1c25SSeungwon Jeon /* 14142385049dSSeungwon Jeon * Choose the power class with selected bus interface 14152385049dSSeungwon Jeon */ 14162385049dSSeungwon Jeon mmc_select_powerclass(card); 14172385049dSSeungwon Jeon 14182385049dSSeungwon Jeon /* 141952d0974eSSubhash Jadavani * Enable HPI feature (if supported) 142052d0974eSSubhash Jadavani */ 142152d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 142252d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 142352d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 142452d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 142552d0974eSSubhash Jadavani if (err && err != -EBADMSG) 142652d0974eSSubhash Jadavani goto free_card; 142752d0974eSSubhash Jadavani if (err) { 14286606110dSJoe Perches pr_warn("%s: Enabling HPI failed\n", 142952d0974eSSubhash Jadavani mmc_hostname(card->host)); 143052d0974eSSubhash Jadavani err = 0; 143152d0974eSSubhash Jadavani } else 143252d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 143352d0974eSSubhash Jadavani } 143452d0974eSSubhash Jadavani 143552d0974eSSubhash Jadavani /* 1436881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1437881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1438881d1c25SSeungwon Jeon */ 14397536d3f8SUlf Hansson if (card->ext_csd.cache_size > 0) { 1440881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 14418bc0678bSSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 14428bc0678bSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1443881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1444881d1c25SSeungwon Jeon goto free_card; 1445881d1c25SSeungwon Jeon 1446881d1c25SSeungwon Jeon /* 1447881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1448881d1c25SSeungwon Jeon */ 14498bc0678bSSeungwon Jeon if (err) { 14506606110dSJoe Perches pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", 14518bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 14528bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 14538bc0678bSSeungwon Jeon err = 0; 14548bc0678bSSeungwon Jeon } else { 14558bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 14568bc0678bSSeungwon Jeon } 1457881d1c25SSeungwon Jeon } 1458881d1c25SSeungwon Jeon 1459abd9ac14SSeungwon Jeon /* 1460abd9ac14SSeungwon Jeon * The mandatory minimum values are defined for packed command. 1461abd9ac14SSeungwon Jeon * read: 5, write: 3 1462abd9ac14SSeungwon Jeon */ 1463abd9ac14SSeungwon Jeon if (card->ext_csd.max_packed_writes >= 3 && 1464abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads >= 5 && 1465abd9ac14SSeungwon Jeon host->caps2 & MMC_CAP2_PACKED_CMD) { 1466abd9ac14SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1467abd9ac14SSeungwon Jeon EXT_CSD_EXP_EVENTS_CTRL, 1468abd9ac14SSeungwon Jeon EXT_CSD_PACKED_EVENT_EN, 1469abd9ac14SSeungwon Jeon card->ext_csd.generic_cmd6_time); 1470abd9ac14SSeungwon Jeon if (err && err != -EBADMSG) 1471abd9ac14SSeungwon Jeon goto free_card; 1472abd9ac14SSeungwon Jeon if (err) { 1473abd9ac14SSeungwon Jeon pr_warn("%s: Enabling packed event failed\n", 1474abd9ac14SSeungwon Jeon mmc_hostname(card->host)); 1475abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 0; 1476abd9ac14SSeungwon Jeon err = 0; 1477abd9ac14SSeungwon Jeon } else { 1478abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 1; 1479abd9ac14SSeungwon Jeon } 1480abd9ac14SSeungwon Jeon } 1481abd9ac14SSeungwon Jeon 14826abaa0c9SPierre Ossman if (!oldcard) 14837ea239d9SPierre Ossman host->card = card; 14847ea239d9SPierre Ossman 148517b0429dSPierre Ossman return 0; 14866abaa0c9SPierre Ossman 14876abaa0c9SPierre Ossman free_card: 14886abaa0c9SPierre Ossman if (!oldcard) 14896abaa0c9SPierre Ossman mmc_remove_card(card); 14906abaa0c9SPierre Ossman err: 1491adf66a0dSPierre Ossman return err; 14926abaa0c9SPierre Ossman } 14936abaa0c9SPierre Ossman 149407a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 149507a68216SUlf Hansson { 149607a68216SUlf Hansson return (card && card->ext_csd.rev >= 3); 149707a68216SUlf Hansson } 149807a68216SUlf Hansson 149907a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 150007a68216SUlf Hansson { 150107a68216SUlf Hansson struct mmc_command cmd = {0}; 150207a68216SUlf Hansson struct mmc_card *card = host->card; 1503cb962e04SUlf Hansson unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); 150407a68216SUlf Hansson int err; 150507a68216SUlf Hansson 150607a68216SUlf Hansson err = mmc_deselect_cards(host); 150707a68216SUlf Hansson if (err) 150807a68216SUlf Hansson return err; 150907a68216SUlf Hansson 151007a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 151107a68216SUlf Hansson cmd.arg = card->rca << 16; 151207a68216SUlf Hansson cmd.arg |= 1 << 15; 151307a68216SUlf Hansson 1514cb962e04SUlf Hansson /* 1515cb962e04SUlf Hansson * If the max_busy_timeout of the host is specified, validate it against 1516cb962e04SUlf Hansson * the sleep cmd timeout. A failure means we need to prevent the host 1517cb962e04SUlf Hansson * from doing hw busy detection, which is done by converting to a R1 1518cb962e04SUlf Hansson * response instead of a R1B. 1519cb962e04SUlf Hansson */ 1520cb962e04SUlf Hansson if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { 1521cb962e04SUlf Hansson cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1522cb962e04SUlf Hansson } else { 152307a68216SUlf Hansson cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 1524cb962e04SUlf Hansson cmd.busy_timeout = timeout_ms; 1525cb962e04SUlf Hansson } 1526cb962e04SUlf Hansson 152707a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 152807a68216SUlf Hansson if (err) 152907a68216SUlf Hansson return err; 153007a68216SUlf Hansson 153107a68216SUlf Hansson /* 153207a68216SUlf Hansson * If the host does not wait while the card signals busy, then we will 153307a68216SUlf Hansson * will have to wait the sleep/awake timeout. Note, we cannot use the 153407a68216SUlf Hansson * SEND_STATUS command to poll the status because that command (and most 153507a68216SUlf Hansson * others) is invalid while the card sleeps. 153607a68216SUlf Hansson */ 1537cb962e04SUlf Hansson if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) 1538cb962e04SUlf Hansson mmc_delay(timeout_ms); 153907a68216SUlf Hansson 154007a68216SUlf Hansson return err; 154107a68216SUlf Hansson } 154207a68216SUlf Hansson 1543e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1544e6c08586SUlf Hansson { 1545e6c08586SUlf Hansson return card && 1546e6c08586SUlf Hansson mmc_card_mmc(card) && 1547e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1548e6c08586SUlf Hansson } 1549e6c08586SUlf Hansson 1550e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1551e6c08586SUlf Hansson { 1552e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1553e6c08586SUlf Hansson int err; 1554e6c08586SUlf Hansson 1555e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1556e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1557e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1558e6c08586SUlf Hansson 1559878e200bSUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1560e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 15614509f847SUlf Hansson notify_type, timeout, true, false, false); 1562e6c08586SUlf Hansson if (err) 1563e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1564e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1565e6c08586SUlf Hansson 1566e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 1567e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 1568e6c08586SUlf Hansson 1569e6c08586SUlf Hansson return err; 1570e6c08586SUlf Hansson } 1571e6c08586SUlf Hansson 15726abaa0c9SPierre Ossman /* 15736abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 15746abaa0c9SPierre Ossman */ 15756abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 15766abaa0c9SPierre Ossman { 15776abaa0c9SPierre Ossman BUG_ON(!host); 15786abaa0c9SPierre Ossman BUG_ON(!host->card); 15796abaa0c9SPierre Ossman 15806abaa0c9SPierre Ossman mmc_remove_card(host->card); 15816abaa0c9SPierre Ossman host->card = NULL; 15826abaa0c9SPierre Ossman } 15836abaa0c9SPierre Ossman 15846abaa0c9SPierre Ossman /* 1585d3049504SAdrian Hunter * Card detection - card is alive. 1586d3049504SAdrian Hunter */ 1587d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1588d3049504SAdrian Hunter { 1589d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1590d3049504SAdrian Hunter } 1591d3049504SAdrian Hunter 1592d3049504SAdrian Hunter /* 15936abaa0c9SPierre Ossman * Card detection callback from host. 15946abaa0c9SPierre Ossman */ 15956abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 15966abaa0c9SPierre Ossman { 15976abaa0c9SPierre Ossman int err; 15986abaa0c9SPierre Ossman 15996abaa0c9SPierre Ossman BUG_ON(!host); 16006abaa0c9SPierre Ossman BUG_ON(!host->card); 16016abaa0c9SPierre Ossman 1602e94cfef6SUlf Hansson mmc_get_card(host->card); 16036abaa0c9SPierre Ossman 16046abaa0c9SPierre Ossman /* 16056abaa0c9SPierre Ossman * Just check if our card has been removed. 16066abaa0c9SPierre Ossman */ 1607d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 16086abaa0c9SPierre Ossman 1609e94cfef6SUlf Hansson mmc_put_card(host->card); 16107ea239d9SPierre Ossman 161117b0429dSPierre Ossman if (err) { 16124101c16aSPierre Ossman mmc_remove(host); 16136abaa0c9SPierre Ossman 16146abaa0c9SPierre Ossman mmc_claim_host(host); 16156abaa0c9SPierre Ossman mmc_detach_bus(host); 16167f7e4129SUlf Hansson mmc_power_off(host); 16176abaa0c9SPierre Ossman mmc_release_host(host); 16186abaa0c9SPierre Ossman } 16196abaa0c9SPierre Ossman } 16206abaa0c9SPierre Ossman 162103d071fcSUlf Hansson static int _mmc_suspend(struct mmc_host *host, bool is_suspend) 16226abaa0c9SPierre Ossman { 1623c3805467SBalaji T K int err = 0; 162403d071fcSUlf Hansson unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : 162503d071fcSUlf Hansson EXT_CSD_POWER_OFF_LONG; 1626c3805467SBalaji T K 16276abaa0c9SPierre Ossman BUG_ON(!host); 16286abaa0c9SPierre Ossman BUG_ON(!host->card); 16296abaa0c9SPierre Ossman 16306abaa0c9SPierre Ossman mmc_claim_host(host); 1631881d926dSMaya Erez 16329ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 16339ec775f7SUlf Hansson goto out; 16349ec775f7SUlf Hansson 163539b9431bSUlf Hansson if (mmc_card_doing_bkops(host->card)) { 163639b9431bSUlf Hansson err = mmc_stop_bkops(host->card); 163739b9431bSUlf Hansson if (err) 163839b9431bSUlf Hansson goto out; 163939b9431bSUlf Hansson } 164039b9431bSUlf Hansson 164110e5d965SUlf Hansson err = mmc_flush_cache(host->card); 1642881d926dSMaya Erez if (err) 1643881d926dSMaya Erez goto out; 1644881d926dSMaya Erez 164543235679SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 164653275c21SUlf Hansson ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) 164703d071fcSUlf Hansson err = mmc_poweroff_notify(host->card, notify_type); 164807a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 164907a68216SUlf Hansson err = mmc_sleep(host); 1650e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 165185e727edSJaehoon Chung err = mmc_deselect_cards(host); 165295cdfb72SNicolas Pitre 16539ec775f7SUlf Hansson if (!err) { 165474590263SUlf Hansson mmc_power_off(host); 16559ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 16569ec775f7SUlf Hansson } 1657881d926dSMaya Erez out: 1658881d926dSMaya Erez mmc_release_host(host); 1659c3805467SBalaji T K return err; 16606abaa0c9SPierre Ossman } 16616abaa0c9SPierre Ossman 16626abaa0c9SPierre Ossman /* 16630cb403a2SUlf Hansson * Suspend callback 166403d071fcSUlf Hansson */ 166503d071fcSUlf Hansson static int mmc_suspend(struct mmc_host *host) 166603d071fcSUlf Hansson { 16670cb403a2SUlf Hansson int err; 16680cb403a2SUlf Hansson 16690cb403a2SUlf Hansson err = _mmc_suspend(host, true); 16700cb403a2SUlf Hansson if (!err) { 16710cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 16720cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 16730cb403a2SUlf Hansson } 16740cb403a2SUlf Hansson 16750cb403a2SUlf Hansson return err; 167603d071fcSUlf Hansson } 167703d071fcSUlf Hansson 167803d071fcSUlf Hansson /* 16796abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 16806abaa0c9SPierre Ossman * and, if so, restore all state to it. 16816abaa0c9SPierre Ossman */ 16820cb403a2SUlf Hansson static int _mmc_resume(struct mmc_host *host) 16836abaa0c9SPierre Ossman { 16849ec775f7SUlf Hansson int err = 0; 16856abaa0c9SPierre Ossman 16866abaa0c9SPierre Ossman BUG_ON(!host); 16876abaa0c9SPierre Ossman BUG_ON(!host->card); 16886abaa0c9SPierre Ossman 16896abaa0c9SPierre Ossman mmc_claim_host(host); 16909ec775f7SUlf Hansson 16919ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 16929ec775f7SUlf Hansson goto out; 16939ec775f7SUlf Hansson 169469041150SUlf Hansson mmc_power_up(host, host->card->ocr); 169569041150SUlf Hansson err = mmc_init_card(host, host->card->ocr, host->card); 16969ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 16972986d0bfSPierre Ossman 16989ec775f7SUlf Hansson out: 16999ec775f7SUlf Hansson mmc_release_host(host); 170095cdfb72SNicolas Pitre return err; 17016abaa0c9SPierre Ossman } 17026abaa0c9SPierre Ossman 17039ec775f7SUlf Hansson /* 17049ec775f7SUlf Hansson * Shutdown callback 17059ec775f7SUlf Hansson */ 17069ec775f7SUlf Hansson static int mmc_shutdown(struct mmc_host *host) 17079ec775f7SUlf Hansson { 17089ec775f7SUlf Hansson int err = 0; 17099ec775f7SUlf Hansson 17109ec775f7SUlf Hansson /* 17119ec775f7SUlf Hansson * In a specific case for poweroff notify, we need to resume the card 17129ec775f7SUlf Hansson * before we can shutdown it properly. 17139ec775f7SUlf Hansson */ 17149ec775f7SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 17159ec775f7SUlf Hansson !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) 17160cb403a2SUlf Hansson err = _mmc_resume(host); 17179ec775f7SUlf Hansson 17189ec775f7SUlf Hansson if (!err) 17199ec775f7SUlf Hansson err = _mmc_suspend(host, false); 17209ec775f7SUlf Hansson 17219ec775f7SUlf Hansson return err; 17229ec775f7SUlf Hansson } 1723c4d770d7SUlf Hansson 1724c4d770d7SUlf Hansson /* 17250cb403a2SUlf Hansson * Callback for resume. 17260cb403a2SUlf Hansson */ 17270cb403a2SUlf Hansson static int mmc_resume(struct mmc_host *host) 17280cb403a2SUlf Hansson { 17294d223782SUlf Hansson int err = 0; 17300cb403a2SUlf Hansson 17314d223782SUlf Hansson if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) { 17320cb403a2SUlf Hansson err = _mmc_resume(host); 17330cb403a2SUlf Hansson pm_runtime_set_active(&host->card->dev); 17340cb403a2SUlf Hansson pm_runtime_mark_last_busy(&host->card->dev); 17354d223782SUlf Hansson } 17360cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 17370cb403a2SUlf Hansson 17380cb403a2SUlf Hansson return err; 17390cb403a2SUlf Hansson } 17400cb403a2SUlf Hansson 17410cb403a2SUlf Hansson /* 1742c4d770d7SUlf Hansson * Callback for runtime_suspend. 1743c4d770d7SUlf Hansson */ 1744c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 1745c4d770d7SUlf Hansson { 1746c4d770d7SUlf Hansson int err; 1747c4d770d7SUlf Hansson 1748c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 1749c4d770d7SUlf Hansson return 0; 1750c4d770d7SUlf Hansson 17510cb403a2SUlf Hansson err = _mmc_suspend(host, true); 17520cc81a8cSUlf Hansson if (err) 1753c4d770d7SUlf Hansson pr_err("%s: error %d doing aggessive suspend\n", 1754c4d770d7SUlf Hansson mmc_hostname(host), err); 1755c4d770d7SUlf Hansson 1756c4d770d7SUlf Hansson return err; 1757c4d770d7SUlf Hansson } 1758c4d770d7SUlf Hansson 1759c4d770d7SUlf Hansson /* 1760c4d770d7SUlf Hansson * Callback for runtime_resume. 1761c4d770d7SUlf Hansson */ 1762c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 1763c4d770d7SUlf Hansson { 1764c4d770d7SUlf Hansson int err; 1765c4d770d7SUlf Hansson 17664d223782SUlf Hansson if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME))) 1767c4d770d7SUlf Hansson return 0; 1768c4d770d7SUlf Hansson 17690cb403a2SUlf Hansson err = _mmc_resume(host); 1770c4d770d7SUlf Hansson if (err) 1771c4d770d7SUlf Hansson pr_err("%s: error %d doing aggessive resume\n", 1772c4d770d7SUlf Hansson mmc_hostname(host), err); 1773c4d770d7SUlf Hansson 1774c4d770d7SUlf Hansson return 0; 1775c4d770d7SUlf Hansson } 1776c4d770d7SUlf Hansson 177712ae637fSOhad Ben-Cohen static int mmc_power_restore(struct mmc_host *host) 1778eae1aeeeSAdrian Hunter { 177912ae637fSOhad Ben-Cohen int ret; 178012ae637fSOhad Ben-Cohen 1781eae1aeeeSAdrian Hunter mmc_claim_host(host); 178269041150SUlf Hansson ret = mmc_init_card(host, host->card->ocr, host->card); 1783eae1aeeeSAdrian Hunter mmc_release_host(host); 178412ae637fSOhad Ben-Cohen 178512ae637fSOhad Ben-Cohen return ret; 1786eae1aeeeSAdrian Hunter } 1787eae1aeeeSAdrian Hunter 1788f855a371SJohan Rudholm int mmc_can_reset(struct mmc_card *card) 1789f855a371SJohan Rudholm { 1790f855a371SJohan Rudholm u8 rst_n_function; 1791f855a371SJohan Rudholm 1792f855a371SJohan Rudholm rst_n_function = card->ext_csd.rst_n_function; 1793f855a371SJohan Rudholm if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) 1794f855a371SJohan Rudholm return 0; 1795f855a371SJohan Rudholm return 1; 1796f855a371SJohan Rudholm } 1797f855a371SJohan Rudholm EXPORT_SYMBOL(mmc_can_reset); 1798f855a371SJohan Rudholm 1799f855a371SJohan Rudholm static int mmc_reset(struct mmc_host *host) 1800f855a371SJohan Rudholm { 1801f855a371SJohan Rudholm struct mmc_card *card = host->card; 1802f855a371SJohan Rudholm u32 status; 1803f855a371SJohan Rudholm 1804f855a371SJohan Rudholm if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset) 1805f855a371SJohan Rudholm return -EOPNOTSUPP; 1806f855a371SJohan Rudholm 1807f855a371SJohan Rudholm if (!mmc_can_reset(card)) 1808f855a371SJohan Rudholm return -EOPNOTSUPP; 1809f855a371SJohan Rudholm 1810f855a371SJohan Rudholm mmc_host_clk_hold(host); 1811f855a371SJohan Rudholm mmc_set_clock(host, host->f_init); 1812f855a371SJohan Rudholm 1813f855a371SJohan Rudholm host->ops->hw_reset(host); 1814f855a371SJohan Rudholm 1815f855a371SJohan Rudholm /* If the reset has happened, then a status command will fail */ 1816f855a371SJohan Rudholm if (!mmc_send_status(card, &status)) { 1817f855a371SJohan Rudholm mmc_host_clk_release(host); 1818f855a371SJohan Rudholm return -ENOSYS; 1819f855a371SJohan Rudholm } 1820f855a371SJohan Rudholm 1821f855a371SJohan Rudholm /* Set initial state and call mmc_set_ios */ 1822f855a371SJohan Rudholm mmc_set_initial_state(host); 1823f855a371SJohan Rudholm mmc_host_clk_release(host); 1824f855a371SJohan Rudholm 1825f855a371SJohan Rudholm return mmc_power_restore(host); 1826f855a371SJohan Rudholm } 1827f855a371SJohan Rudholm 18289feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 18299feae246SAdrian Hunter .remove = mmc_remove, 18309feae246SAdrian Hunter .detect = mmc_detect, 18319feae246SAdrian Hunter .suspend = mmc_suspend, 18329feae246SAdrian Hunter .resume = mmc_resume, 1833c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 1834c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 1835eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1836d3049504SAdrian Hunter .alive = mmc_alive, 1837486fdbbcSUlf Hansson .shutdown = mmc_shutdown, 1838f855a371SJohan Rudholm .reset = mmc_reset, 18399feae246SAdrian Hunter }; 18409feae246SAdrian Hunter 18416abaa0c9SPierre Ossman /* 18426abaa0c9SPierre Ossman * Starting point for MMC card init. 18436abaa0c9SPierre Ossman */ 1844807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 18456abaa0c9SPierre Ossman { 18466abaa0c9SPierre Ossman int err; 184769041150SUlf Hansson u32 ocr, rocr; 18486abaa0c9SPierre Ossman 18496abaa0c9SPierre Ossman BUG_ON(!host); 1850d84075c8SPierre Ossman WARN_ON(!host->claimed); 18516abaa0c9SPierre Ossman 185244669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 185344669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 185444669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 185544669034SStefan Nilsson XK 1856807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 1857807e8e40SAndy Ross if (err) 1858807e8e40SAndy Ross return err; 1859807e8e40SAndy Ross 18602501c917SUlf Hansson mmc_attach_bus(host, &mmc_ops); 18618f230f45STakashi Iwai if (host->ocr_avail_mmc) 18628f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 18636abaa0c9SPierre Ossman 18646abaa0c9SPierre Ossman /* 1865af517150SDavid Brownell * We need to get OCR a different way for SPI. 1866af517150SDavid Brownell */ 1867af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1868af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 1869af517150SDavid Brownell if (err) 1870af517150SDavid Brownell goto err; 1871af517150SDavid Brownell } 1872af517150SDavid Brownell 187369041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 18746abaa0c9SPierre Ossman 18756abaa0c9SPierre Ossman /* 18766abaa0c9SPierre Ossman * Can we support the voltage of the card? 18776abaa0c9SPierre Ossman */ 187869041150SUlf Hansson if (!rocr) { 1879109b5bedSPierre Ossman err = -EINVAL; 18806abaa0c9SPierre Ossman goto err; 1881109b5bedSPierre Ossman } 18826abaa0c9SPierre Ossman 18836abaa0c9SPierre Ossman /* 18846abaa0c9SPierre Ossman * Detect and init the card. 18856abaa0c9SPierre Ossman */ 188669041150SUlf Hansson err = mmc_init_card(host, rocr, NULL); 188717b0429dSPierre Ossman if (err) 18886abaa0c9SPierre Ossman goto err; 18896abaa0c9SPierre Ossman 18906abaa0c9SPierre Ossman mmc_release_host(host); 18914101c16aSPierre Ossman err = mmc_add_card(host->card); 1892807e8e40SAndy Ross mmc_claim_host(host); 18937ea239d9SPierre Ossman if (err) 18942986d0bfSPierre Ossman goto remove_card; 18957ea239d9SPierre Ossman 18967ea239d9SPierre Ossman return 0; 18977ea239d9SPierre Ossman 18982986d0bfSPierre Ossman remove_card: 1899807e8e40SAndy Ross mmc_release_host(host); 19006abaa0c9SPierre Ossman mmc_remove_card(host->card); 19012986d0bfSPierre Ossman mmc_claim_host(host); 1902807e8e40SAndy Ross host->card = NULL; 19037ea239d9SPierre Ossman err: 19047ea239d9SPierre Ossman mmc_detach_bus(host); 19057ea239d9SPierre Ossman 1906a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 1907109b5bedSPierre Ossman mmc_hostname(host), err); 1908109b5bedSPierre Ossman 1909adf66a0dSPierre Ossman return err; 19107ea239d9SPierre Ossman } 1911