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> 1481f8a7beSHans de Goede #include <linux/of.h> 155a0e3ad6STejun Heo #include <linux/slab.h> 160205a904SPaul Gortmaker #include <linux/stat.h> 170cb403a2SUlf Hansson #include <linux/pm_runtime.h> 187ea239d9SPierre Ossman 197ea239d9SPierre Ossman #include <linux/mmc/host.h> 207ea239d9SPierre Ossman #include <linux/mmc/card.h> 217ea239d9SPierre Ossman #include <linux/mmc/mmc.h> 227ea239d9SPierre Ossman 237ea239d9SPierre Ossman #include "core.h" 24436f8daaSAdrian Hunter #include "host.h" 254101c16aSPierre Ossman #include "bus.h" 267ea239d9SPierre Ossman #include "mmc_ops.h" 274c4cb171SPhilip Rakity #include "sd_ops.h" 287ea239d9SPierre Ossman 297ea239d9SPierre Ossman static const unsigned int tran_exp[] = { 307ea239d9SPierre Ossman 10000, 100000, 1000000, 10000000, 317ea239d9SPierre Ossman 0, 0, 0, 0 327ea239d9SPierre Ossman }; 337ea239d9SPierre Ossman 347ea239d9SPierre Ossman static const unsigned char tran_mant[] = { 357ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 367ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 377ea239d9SPierre Ossman }; 387ea239d9SPierre Ossman 397ea239d9SPierre Ossman static const unsigned int tacc_exp[] = { 407ea239d9SPierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 417ea239d9SPierre Ossman }; 427ea239d9SPierre Ossman 437ea239d9SPierre Ossman static const unsigned int tacc_mant[] = { 447ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 457ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 467ea239d9SPierre Ossman }; 477ea239d9SPierre Ossman 487ea239d9SPierre Ossman #define UNSTUFF_BITS(resp,start,size) \ 497ea239d9SPierre Ossman ({ \ 507ea239d9SPierre Ossman const int __size = size; \ 517ea239d9SPierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 527ea239d9SPierre Ossman const int __off = 3 - ((start) / 32); \ 537ea239d9SPierre Ossman const int __shft = (start) & 31; \ 547ea239d9SPierre Ossman u32 __res; \ 557ea239d9SPierre Ossman \ 567ea239d9SPierre Ossman __res = resp[__off] >> __shft; \ 577ea239d9SPierre Ossman if (__size + __shft > 32) \ 587ea239d9SPierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 597ea239d9SPierre Ossman __res & __mask; \ 607ea239d9SPierre Ossman }) 617ea239d9SPierre Ossman 627ea239d9SPierre Ossman /* 637ea239d9SPierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 647ea239d9SPierre Ossman */ 65bd766312SPierre Ossman static int mmc_decode_cid(struct mmc_card *card) 667ea239d9SPierre Ossman { 677ea239d9SPierre Ossman u32 *resp = card->raw_cid; 687ea239d9SPierre Ossman 697ea239d9SPierre Ossman /* 707ea239d9SPierre Ossman * The selection of the format here is based upon published 717ea239d9SPierre Ossman * specs from sandisk and from what people have reported. 727ea239d9SPierre Ossman */ 737ea239d9SPierre Ossman switch (card->csd.mmca_vsn) { 747ea239d9SPierre Ossman case 0: /* MMC v1.0 - v1.2 */ 757ea239d9SPierre Ossman case 1: /* MMC v1.4 */ 767ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); 777ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 787ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 797ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 807ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 817ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 827ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 837ea239d9SPierre Ossman card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); 847ea239d9SPierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); 857ea239d9SPierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); 867ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 24); 877ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 887ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 897ea239d9SPierre Ossman break; 907ea239d9SPierre Ossman 917ea239d9SPierre Ossman case 2: /* MMC v2.0 - v2.2 */ 927ea239d9SPierre Ossman case 3: /* MMC v3.1 - v3.3 */ 937ea239d9SPierre Ossman case 4: /* MMC v4 */ 947ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 957ea239d9SPierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 967ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 977ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 987ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 997ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 1007ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 1017ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 10251e7e8b6SBernie Thompson card->cid.prv = UNSTUFF_BITS(resp, 48, 8); 1037ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 32); 1047ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1057ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1067ea239d9SPierre Ossman break; 1077ea239d9SPierre Ossman 1087ea239d9SPierre Ossman default: 109a3c76eb9SGirish K S pr_err("%s: card has unknown MMCA version %d\n", 1107ea239d9SPierre Ossman mmc_hostname(card->host), card->csd.mmca_vsn); 111bd766312SPierre Ossman return -EINVAL; 1127ea239d9SPierre Ossman } 113bd766312SPierre Ossman 114bd766312SPierre Ossman return 0; 1157ea239d9SPierre Ossman } 1167ea239d9SPierre Ossman 117dfe86cbaSAdrian Hunter static void mmc_set_erase_size(struct mmc_card *card) 118dfe86cbaSAdrian Hunter { 119dfe86cbaSAdrian Hunter if (card->ext_csd.erase_group_def & 1) 120dfe86cbaSAdrian Hunter card->erase_size = card->ext_csd.hc_erase_size; 121dfe86cbaSAdrian Hunter else 122dfe86cbaSAdrian Hunter card->erase_size = card->csd.erase_size; 123dfe86cbaSAdrian Hunter 124dfe86cbaSAdrian Hunter mmc_init_erase(card); 125dfe86cbaSAdrian Hunter } 126dfe86cbaSAdrian Hunter 1277ea239d9SPierre Ossman /* 1287ea239d9SPierre Ossman * Given a 128-bit response, decode to our card CSD structure. 1297ea239d9SPierre Ossman */ 130bd766312SPierre Ossman static int mmc_decode_csd(struct mmc_card *card) 1317ea239d9SPierre Ossman { 1327ea239d9SPierre Ossman struct mmc_csd *csd = &card->csd; 133dfe86cbaSAdrian Hunter unsigned int e, m, a, b; 1347ea239d9SPierre Ossman u32 *resp = card->raw_csd; 1357ea239d9SPierre Ossman 1367ea239d9SPierre Ossman /* 1377ea239d9SPierre Ossman * We only understand CSD structure v1.1 and v1.2. 1387ea239d9SPierre Ossman * v1.2 has extra information in bits 15, 11 and 10. 1396da24b78SKyungmin Park * We also support eMMC v4.4 & v4.41. 1407ea239d9SPierre Ossman */ 1416da24b78SKyungmin Park csd->structure = UNSTUFF_BITS(resp, 126, 2); 1426da24b78SKyungmin Park if (csd->structure == 0) { 143a3c76eb9SGirish K S pr_err("%s: unrecognised CSD structure version %d\n", 1446da24b78SKyungmin Park mmc_hostname(card->host), csd->structure); 145bd766312SPierre Ossman return -EINVAL; 1467ea239d9SPierre Ossman } 1477ea239d9SPierre Ossman 1487ea239d9SPierre Ossman csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); 1497ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1507ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1517ea239d9SPierre Ossman csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; 1527ea239d9SPierre Ossman csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1537ea239d9SPierre Ossman 1547ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1557ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1567ea239d9SPierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1577ea239d9SPierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1587ea239d9SPierre Ossman 1597ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1607ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1617ea239d9SPierre Ossman csd->capacity = (1 + m) << (e + 2); 1627ea239d9SPierre Ossman 1637ea239d9SPierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1647ea239d9SPierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1657ea239d9SPierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1667ea239d9SPierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1673d705d14SSascha Hauer csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); 1687ea239d9SPierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1697ea239d9SPierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1707ea239d9SPierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 171bd766312SPierre Ossman 172dfe86cbaSAdrian Hunter if (csd->write_blkbits >= 9) { 173dfe86cbaSAdrian Hunter a = UNSTUFF_BITS(resp, 42, 5); 174dfe86cbaSAdrian Hunter b = UNSTUFF_BITS(resp, 37, 5); 175dfe86cbaSAdrian Hunter csd->erase_size = (a + 1) * (b + 1); 176dfe86cbaSAdrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 177dfe86cbaSAdrian Hunter } 178dfe86cbaSAdrian Hunter 179bd766312SPierre Ossman return 0; 1807ea239d9SPierre Ossman } 1817ea239d9SPierre Ossman 18296cf5f02SSeungwon Jeon static void mmc_select_card_type(struct mmc_card *card) 18396cf5f02SSeungwon Jeon { 18496cf5f02SSeungwon Jeon struct mmc_host *host = card->host; 1850a5b6438SSeungwon Jeon u8 card_type = card->ext_csd.raw_card_type; 1865f1a4dd0SLee Jones u32 caps = host->caps, caps2 = host->caps2; 187577fb131SSeungwon Jeon unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; 1882415c0efSSeungwon Jeon unsigned int avail_type = 0; 18996cf5f02SSeungwon Jeon 19096cf5f02SSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 1912415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_26) { 1922415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_26_MAX_DTR; 1932415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_26; 1942415c0efSSeungwon Jeon } 1952415c0efSSeungwon Jeon 1962415c0efSSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 1972415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_52) { 19896cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_52_MAX_DTR; 1992415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_52; 2002415c0efSSeungwon Jeon } 20196cf5f02SSeungwon Jeon 2022415c0efSSeungwon Jeon if (caps & MMC_CAP_1_8V_DDR && 2032415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { 20496cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2052415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; 2062415c0efSSeungwon Jeon } 20796cf5f02SSeungwon Jeon 2082415c0efSSeungwon Jeon if (caps & MMC_CAP_1_2V_DDR && 2092415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 2102415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2112415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; 2122415c0efSSeungwon Jeon } 2132415c0efSSeungwon Jeon 2142415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_8V_SDR && 2152415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { 216577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2172415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; 2182415c0efSSeungwon Jeon } 2192415c0efSSeungwon Jeon 2202415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_2V_SDR && 2212415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { 222577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2232415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; 2242415c0efSSeungwon Jeon } 22596cf5f02SSeungwon Jeon 2260a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_8V && 2270a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { 2280a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2290a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; 2300a5b6438SSeungwon Jeon } 2310a5b6438SSeungwon Jeon 2320a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_2V && 2330a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { 2340a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2350a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; 2360a5b6438SSeungwon Jeon } 2370a5b6438SSeungwon Jeon 23896cf5f02SSeungwon Jeon card->ext_csd.hs_max_dtr = hs_max_dtr; 239577fb131SSeungwon Jeon card->ext_csd.hs200_max_dtr = hs200_max_dtr; 2402415c0efSSeungwon Jeon card->mmc_avail_type = avail_type; 24196cf5f02SSeungwon Jeon } 24296cf5f02SSeungwon Jeon 243b4493eeaSGrégory Soutadé static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) 244b4493eeaSGrégory Soutadé { 245994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 246994324bbSGrégory Soutadé 247994324bbSGrégory Soutadé /* 248994324bbSGrégory Soutadé * Disable these attributes by default 249994324bbSGrégory Soutadé */ 250994324bbSGrégory Soutadé card->ext_csd.enhanced_area_offset = -EINVAL; 251994324bbSGrégory Soutadé card->ext_csd.enhanced_area_size = -EINVAL; 252b4493eeaSGrégory Soutadé 253b4493eeaSGrégory Soutadé /* 254b4493eeaSGrégory Soutadé * Enhanced area feature support -- check whether the eMMC 255b4493eeaSGrégory Soutadé * card has the Enhanced area enabled. If so, export enhanced 256b4493eeaSGrégory Soutadé * area offset and size to user by adding sysfs interface. 257b4493eeaSGrégory Soutadé */ 258b4493eeaSGrégory Soutadé if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 259b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 260994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed) { 261b4493eeaSGrégory Soutadé hc_erase_grp_sz = 262b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 263b4493eeaSGrégory Soutadé hc_wp_grp_sz = 264b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 265b4493eeaSGrégory Soutadé 266b4493eeaSGrégory Soutadé /* 267b4493eeaSGrégory Soutadé * calculate the enhanced data area offset, in bytes 268b4493eeaSGrégory Soutadé */ 269b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset = 270ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[139]) << 24) + 271ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[138]) << 16) + 272ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[137]) << 8) + 273ded8a5f9SKuninori Morimoto (((unsigned long long)ext_csd[136])); 274b4493eeaSGrégory Soutadé if (mmc_card_blockaddr(card)) 275b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset <<= 9; 276b4493eeaSGrégory Soutadé /* 277b4493eeaSGrégory Soutadé * calculate the enhanced data area size, in kilobytes 278b4493eeaSGrégory Soutadé */ 279b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size = 280b4493eeaSGrégory Soutadé (ext_csd[142] << 16) + (ext_csd[141] << 8) + 281b4493eeaSGrégory Soutadé ext_csd[140]; 282b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size *= 283b4493eeaSGrégory Soutadé (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 284b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size <<= 9; 285b4493eeaSGrégory Soutadé } else { 286994324bbSGrégory Soutadé pr_warn("%s: defines enhanced area without partition setting complete\n", 287994324bbSGrégory Soutadé mmc_hostname(card->host)); 288994324bbSGrégory Soutadé } 289b4493eeaSGrégory Soutadé } 290b4493eeaSGrégory Soutadé } 291b4493eeaSGrégory Soutadé 292b4493eeaSGrégory Soutadé static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) 293b4493eeaSGrégory Soutadé { 294b4493eeaSGrégory Soutadé int idx; 295994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 296994324bbSGrégory Soutadé unsigned int part_size; 297b4493eeaSGrégory Soutadé 298b4493eeaSGrégory Soutadé /* 299b4493eeaSGrégory Soutadé * General purpose partition feature support -- 300b4493eeaSGrégory Soutadé * If ext_csd has the size of general purpose partitions, 301b4493eeaSGrégory Soutadé * set size, part_cfg, partition name in mmc_part. 302b4493eeaSGrégory Soutadé */ 303b4493eeaSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 304b4493eeaSGrégory Soutadé EXT_CSD_PART_SUPPORT_PART_EN) { 305b4493eeaSGrégory Soutadé hc_erase_grp_sz = 306b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 307b4493eeaSGrégory Soutadé hc_wp_grp_sz = 308b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 309b4493eeaSGrégory Soutadé 310b4493eeaSGrégory Soutadé for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 311b4493eeaSGrégory Soutadé if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 312b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 313b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 314b4493eeaSGrégory Soutadé continue; 315994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed == 0) { 316994324bbSGrégory Soutadé pr_warn("%s: has partition size defined without partition complete\n", 317994324bbSGrégory Soutadé mmc_hostname(card->host)); 318994324bbSGrégory Soutadé break; 319994324bbSGrégory Soutadé } 320b4493eeaSGrégory Soutadé part_size = 321b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 322b4493eeaSGrégory Soutadé << 16) + 323b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 324b4493eeaSGrégory Soutadé << 8) + 325b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 326b4493eeaSGrégory Soutadé part_size *= (size_t)(hc_erase_grp_sz * 327b4493eeaSGrégory Soutadé hc_wp_grp_sz); 328b4493eeaSGrégory Soutadé mmc_part_add(card, part_size << 19, 329b4493eeaSGrégory Soutadé EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 330b4493eeaSGrégory Soutadé "gp%d", idx, false, 331b4493eeaSGrégory Soutadé MMC_BLK_DATA_AREA_GP); 332b4493eeaSGrégory Soutadé } 333b4493eeaSGrégory Soutadé } 334b4493eeaSGrégory Soutadé } 335b4493eeaSGrégory Soutadé 33608ee80ccSPhilip Rakity /* 33708ee80ccSPhilip Rakity * Decode extended CSD. 33808ee80ccSPhilip Rakity */ 339076ec38aSUlf Hansson static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) 34008ee80ccSPhilip Rakity { 341e0c368d5SNamjae Jeon int err = 0, idx; 342e0c368d5SNamjae Jeon unsigned int part_size; 34381f8a7beSHans de Goede struct device_node *np; 34481f8a7beSHans de Goede bool broken_hpi = false; 34508ee80ccSPhilip Rakity 3466da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 347f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 3486da24b78SKyungmin Park if (card->csd.structure == 3) { 349f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 350a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 3518fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 352f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 3536da24b78SKyungmin Park err = -EINVAL; 3546da24b78SKyungmin Park goto out; 3556da24b78SKyungmin Park } 3566da24b78SKyungmin Park } 3576da24b78SKyungmin Park 35881f8a7beSHans de Goede np = mmc_of_find_child_device(card->host, 0); 35981f8a7beSHans de Goede if (np && of_device_is_compatible(np, "mmc-card")) 36081f8a7beSHans de Goede broken_hpi = of_property_read_bool(np, "broken-hpi"); 36181f8a7beSHans de Goede of_node_put(np); 36281f8a7beSHans de Goede 36303a59437SRomain Izard /* 36403a59437SRomain Izard * The EXT_CSD format is meant to be forward compatible. As long 36503a59437SRomain Izard * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV 36603a59437SRomain Izard * are authorized, see JEDEC JESD84-B50 section B.8. 36703a59437SRomain Izard */ 3686da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 369d7604d76SPierre Ossman 370f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 371f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 372f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 373f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 374b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 3757ea239d9SPierre Ossman card->ext_csd.sectors = 3767ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 3777ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 3787ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 3797ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 380fc8a0985SHanumath Prasad 381fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 382fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 3837ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 384d7604d76SPierre Ossman } 38596cf5f02SSeungwon Jeon 386f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 38796cf5f02SSeungwon Jeon mmc_select_card_type(card); 3887ea239d9SPierre Ossman 389f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 390f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 391f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 392f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 393f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 394b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 395b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 396371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 397371a689fSAndrei Warkentin 398371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 399371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 400b1ebe384SJarkko Lavinen 401b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 402b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 403b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 404b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 405dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 406dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 407dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 408dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 409dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 410dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 411f4c5522bSAndrei Warkentin 412f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 413371a689fSAndrei Warkentin 414371a689fSAndrei Warkentin /* 415371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 416371a689fSAndrei Warkentin * multiples of 128K. 417371a689fSAndrei Warkentin */ 418e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 419e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 420e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 421e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 422e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 423add710eaSJohan Rudholm "boot%d", idx, true, 424add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 425e0c368d5SNamjae Jeon } 426e0c368d5SNamjae Jeon } 427b1ebe384SJarkko Lavinen } 428b1ebe384SJarkko Lavinen 429f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 430dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 431f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 432f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 433f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 434f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 435f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 436f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 437f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 438f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 439836dc2feSPhilip Rakity card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 440b097e07fSAdrian Hunter card->ext_csd.raw_driver_strength = ext_csd[EXT_CSD_DRIVER_STRENGTH]; 441dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 44269803d4fSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & 44369803d4fSGrégory Soutadé EXT_CSD_PART_SETTING_COMPLETED) 44469803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 1; 44569803d4fSGrégory Soutadé else 44669803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 0; 44769803d4fSGrégory Soutadé 448b4493eeaSGrégory Soutadé mmc_manage_enhanced_area(card, ext_csd); 449709de99dSChuanxiao Dong 450b4493eeaSGrégory Soutadé mmc_manage_gp_partitions(card, ext_csd); 451e0c368d5SNamjae Jeon 452dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 453dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 454dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 455dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 456dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 457dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 458dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 459dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 460add710eaSJohan Rudholm 461add710eaSJohan Rudholm /* 462add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 463add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 464add710eaSJohan Rudholm * take into account the value of boot_locked below. 465add710eaSJohan Rudholm */ 466add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 467add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 46860443712SFredrik Soderstedt 46960443712SFredrik Soderstedt /* Save power class values */ 47060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_195 = 47160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_195]; 47260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_195 = 47360443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_195]; 47460443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_360 = 47560443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_360]; 47660443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_360 = 47760443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_360]; 47860443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_195 = 47960443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_195]; 48060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_360 = 48160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_360]; 48260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_195 = 48360443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; 48460443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_360 = 48560443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; 4860a5b6438SSeungwon Jeon card->ext_csd.raw_pwr_cl_ddr_200_360 = 4870a5b6438SSeungwon Jeon ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; 488dfe86cbaSAdrian Hunter } 489dfe86cbaSAdrian Hunter 490b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 4917c4f10acSRomain Izard /* Adjust production date as per JEDEC JESD84-B451 */ 4927c4f10acSRomain Izard if (card->cid.year < 2010) 4937c4f10acSRomain Izard card->cid.year += 16; 4947c4f10acSRomain Izard 495950d56acSJaehoon Chung /* check whether the eMMC card supports BKOPS */ 496950d56acSJaehoon Chung if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { 497950d56acSJaehoon Chung card->ext_csd.bkops = 1; 4980501be64SAlexey Skidanov card->ext_csd.man_bkops_en = 4990501be64SAlexey Skidanov (ext_csd[EXT_CSD_BKOPS_EN] & 5000501be64SAlexey Skidanov EXT_CSD_MANUAL_BKOPS_MASK); 501950d56acSJaehoon Chung card->ext_csd.raw_bkops_status = 502950d56acSJaehoon Chung ext_csd[EXT_CSD_BKOPS_STATUS]; 5030501be64SAlexey Skidanov if (!card->ext_csd.man_bkops_en) 5040501be64SAlexey Skidanov pr_info("%s: MAN_BKOPS_EN bit is not set\n", 505950d56acSJaehoon Chung mmc_hostname(card->host)); 506950d56acSJaehoon Chung } 507950d56acSJaehoon Chung 508eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 50981f8a7beSHans de Goede if (!broken_hpi && (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1)) { 510eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 511eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 512eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 513eb0d8f13SJaehoon Chung else 514eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 515eb0d8f13SJaehoon Chung /* 516eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 517eb0d8f13SJaehoon Chung * a command interrupted by HPI 518eb0d8f13SJaehoon Chung */ 519eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 520eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 521eb0d8f13SJaehoon Chung } 522eb0d8f13SJaehoon Chung 523f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 524b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 525090d25feSLoic Pallardy 526090d25feSLoic Pallardy /* 527090d25feSLoic Pallardy * RPMB regions are defined in multiples of 128K. 528090d25feSLoic Pallardy */ 529090d25feSLoic Pallardy card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; 530d0123ccaSBalaji T K if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { 531090d25feSLoic Pallardy mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, 532090d25feSLoic Pallardy EXT_CSD_PART_CONFIG_ACC_RPMB, 533090d25feSLoic Pallardy "rpmb", 0, false, 534090d25feSLoic Pallardy MMC_BLK_DATA_AREA_RPMB); 535090d25feSLoic Pallardy } 536b2499518SAdrian Hunter } 537f4c5522bSAndrei Warkentin 5385238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 539dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 540dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 541dfe86cbaSAdrian Hunter else 542dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 543dfe86cbaSAdrian Hunter 544336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 545bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 546336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 547336c716aSSeungwon Jeon 548b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 549b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 550bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 551bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 552b23cf0bdSSeungwon Jeon 553881d1c25SSeungwon Jeon card->ext_csd.cache_size = 554881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 555881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 556881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 557881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 5584265900eSSaugata Das 5594265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 5604265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 5614265900eSSaugata Das else 5624265900eSSaugata Das card->ext_csd.data_sector_size = 512; 5634265900eSSaugata Das 5644265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 5654265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 5664265900eSSaugata Das card->ext_csd.data_tag_unit_size = 5674265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 5684265900eSSaugata Das (card->ext_csd.data_sector_size); 5694265900eSSaugata Das } else { 5704265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 5714265900eSSaugata Das } 572abd9ac14SSeungwon Jeon 573abd9ac14SSeungwon Jeon card->ext_csd.max_packed_writes = 574abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_WRITES]; 575abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads = 576abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_READS]; 577a5075eb9SSaugata Das } else { 578a5075eb9SSaugata Das card->ext_csd.data_sector_size = 512; 579336c716aSSeungwon Jeon } 580881d1c25SSeungwon Jeon 5810f762426SGwendal Grignou /* eMMC v5 or later */ 5820f762426SGwendal Grignou if (card->ext_csd.rev >= 7) { 5830f762426SGwendal Grignou memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], 5840f762426SGwendal Grignou MMC_FIRMWARE_LEN); 5850f762426SGwendal Grignou card->ext_csd.ffu_capable = 5860f762426SGwendal Grignou (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && 5870f762426SGwendal Grignou !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); 5880f762426SGwendal Grignou } 5897ea239d9SPierre Ossman out: 59008ee80ccSPhilip Rakity return err; 59108ee80ccSPhilip Rakity } 5927ea239d9SPierre Ossman 593076ec38aSUlf Hansson static int mmc_read_ext_csd(struct mmc_card *card) 594076ec38aSUlf Hansson { 595c197787cSUlf Hansson u8 *ext_csd; 596076ec38aSUlf Hansson int err; 597076ec38aSUlf Hansson 598c197787cSUlf Hansson if (!mmc_can_ext_csd(card)) 599c197787cSUlf Hansson return 0; 600c197787cSUlf Hansson 601076ec38aSUlf Hansson err = mmc_get_ext_csd(card, &ext_csd); 602c197787cSUlf Hansson if (err) { 603c197787cSUlf Hansson /* If the host or the card can't do the switch, 604c197787cSUlf Hansson * fail more gracefully. */ 605c197787cSUlf Hansson if ((err != -EINVAL) 606c197787cSUlf Hansson && (err != -ENOSYS) 607c197787cSUlf Hansson && (err != -EFAULT)) 608076ec38aSUlf Hansson return err; 609076ec38aSUlf Hansson 610c197787cSUlf Hansson /* 611c197787cSUlf Hansson * High capacity cards should have this "magic" size 612c197787cSUlf Hansson * stored in their CSD. 613c197787cSUlf Hansson */ 614c197787cSUlf Hansson if (card->csd.capacity == (4096 * 512)) { 615c197787cSUlf Hansson pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", 616c197787cSUlf Hansson mmc_hostname(card->host)); 617c197787cSUlf Hansson } else { 618c197787cSUlf Hansson pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", 619c197787cSUlf Hansson mmc_hostname(card->host)); 620c197787cSUlf Hansson err = 0; 621c197787cSUlf Hansson } 622c197787cSUlf Hansson 623c197787cSUlf Hansson return err; 624c197787cSUlf Hansson } 625c197787cSUlf Hansson 626076ec38aSUlf Hansson err = mmc_decode_ext_csd(card, ext_csd); 627076ec38aSUlf Hansson kfree(ext_csd); 628076ec38aSUlf Hansson return err; 629076ec38aSUlf Hansson } 630076ec38aSUlf Hansson 631f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 63208ee80ccSPhilip Rakity { 63308ee80ccSPhilip Rakity u8 *bw_ext_csd; 63408ee80ccSPhilip Rakity int err; 63508ee80ccSPhilip Rakity 636f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 637f39b2dd9SPhilip Rakity return 0; 63808ee80ccSPhilip Rakity 639f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 640c197787cSUlf Hansson if (err) 641c197787cSUlf Hansson return err; 64208ee80ccSPhilip Rakity 64308ee80ccSPhilip Rakity /* only compare read only fields */ 644dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 64508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 646f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 64708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 648f39b2dd9SPhilip Rakity (card->ext_csd.rev == 64908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 650f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 65108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 652f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 65308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 654f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 65508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 656f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 65708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 658f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 65908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 660f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 66108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 662f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 66308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 664f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 66508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 666f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 66708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 668f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 66908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 670f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 671f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 672f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 673f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 674f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 675f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 676f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 67760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && 67860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_195 == 67960443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && 68060443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_195 == 68160443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && 68260443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_360 == 68360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && 68460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_360 == 68560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && 68660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_195 == 68760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && 68860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_360 == 68960443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && 69060443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_195 == 69160443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && 69260443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_360 == 6930a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && 6940a5b6438SSeungwon Jeon (card->ext_csd.raw_pwr_cl_ddr_200_360 == 6950a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); 6960a5b6438SSeungwon Jeon 69708ee80ccSPhilip Rakity if (err) 69808ee80ccSPhilip Rakity err = -EINVAL; 69908ee80ccSPhilip Rakity 70000b41b58SUlf Hansson kfree(bw_ext_csd); 7017ea239d9SPierre Ossman return err; 7027ea239d9SPierre Ossman } 7037ea239d9SPierre Ossman 70451ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 70551ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 70651ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 70751ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 70851ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 709dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 710dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 7110f762426SGwendal Grignou MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); 71251ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 71351ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 71451ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 71551ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 71651e7e8b6SBernie Thompson MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); 71751ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 718709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 719709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 720709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 721188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 722188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 72351ec92e2SPierre Ossman 7240f762426SGwendal Grignou static ssize_t mmc_fwrev_show(struct device *dev, 7250f762426SGwendal Grignou struct device_attribute *attr, 7260f762426SGwendal Grignou char *buf) 7270f762426SGwendal Grignou { 7280f762426SGwendal Grignou struct mmc_card *card = mmc_dev_to_card(dev); 7290f762426SGwendal Grignou 7300f762426SGwendal Grignou if (card->ext_csd.rev < 7) { 7310f762426SGwendal Grignou return sprintf(buf, "0x%x\n", card->cid.fwrev); 7320f762426SGwendal Grignou } else { 7330f762426SGwendal Grignou return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, 7340f762426SGwendal Grignou card->ext_csd.fwrev); 7350f762426SGwendal Grignou } 7360f762426SGwendal Grignou } 7370f762426SGwendal Grignou 7380f762426SGwendal Grignou static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); 7390f762426SGwendal Grignou 74051ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 74151ec92e2SPierre Ossman &dev_attr_cid.attr, 74251ec92e2SPierre Ossman &dev_attr_csd.attr, 74351ec92e2SPierre Ossman &dev_attr_date.attr, 744dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 745dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 74651ec92e2SPierre Ossman &dev_attr_fwrev.attr, 7470f762426SGwendal Grignou &dev_attr_ffu_capable.attr, 74851ec92e2SPierre Ossman &dev_attr_hwrev.attr, 74951ec92e2SPierre Ossman &dev_attr_manfid.attr, 75051ec92e2SPierre Ossman &dev_attr_name.attr, 75151ec92e2SPierre Ossman &dev_attr_oemid.attr, 75251e7e8b6SBernie Thompson &dev_attr_prv.attr, 75351ec92e2SPierre Ossman &dev_attr_serial.attr, 754709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 755709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 756188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 757188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 75851ec92e2SPierre Ossman NULL, 75951ec92e2SPierre Ossman }; 760d1e58212SAxel Lin ATTRIBUTE_GROUPS(mmc_std); 76151ec92e2SPierre Ossman 76251ec92e2SPierre Ossman static struct device_type mmc_type = { 763d1e58212SAxel Lin .groups = mmc_std_groups, 76451ec92e2SPierre Ossman }; 76551ec92e2SPierre Ossman 7667ea239d9SPierre Ossman /* 767b87d8dbfSGirish K S * Select the PowerClass for the current bus width 768b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 769b87d8dbfSGirish K S * extended CSD register, select it by executing the 770b87d8dbfSGirish K S * mmc_switch command. 771b87d8dbfSGirish K S */ 7722385049dSSeungwon Jeon static int __mmc_select_powerclass(struct mmc_card *card, 77360443712SFredrik Soderstedt unsigned int bus_width) 774b87d8dbfSGirish K S { 7752385049dSSeungwon Jeon struct mmc_host *host = card->host; 7762385049dSSeungwon Jeon struct mmc_ext_csd *ext_csd = &card->ext_csd; 77760443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 7782385049dSSeungwon Jeon int err = 0; 779b87d8dbfSGirish K S 780b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 781b87d8dbfSGirish K S case MMC_VDD_165_195: 7822385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 7832385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_195; 7842385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 78560443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 7862385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_195 : 7872385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_195; 7882385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 7892385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_200_195; 790b87d8dbfSGirish K S break; 79193fc5a47SSubhash Jadavani case MMC_VDD_27_28: 79293fc5a47SSubhash Jadavani case MMC_VDD_28_29: 79393fc5a47SSubhash Jadavani case MMC_VDD_29_30: 79493fc5a47SSubhash Jadavani case MMC_VDD_30_31: 79593fc5a47SSubhash Jadavani case MMC_VDD_31_32: 796b87d8dbfSGirish K S case MMC_VDD_32_33: 797b87d8dbfSGirish K S case MMC_VDD_33_34: 798b87d8dbfSGirish K S case MMC_VDD_34_35: 799b87d8dbfSGirish K S case MMC_VDD_35_36: 8002385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 8012385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_360; 8022385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 80360443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 8042385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_360 : 8052385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_360; 8062385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 8070a5b6438SSeungwon Jeon pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? 8080a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_ddr_200_360 : 8090a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_200_360; 810b87d8dbfSGirish K S break; 811b87d8dbfSGirish K S default: 8126606110dSJoe Perches pr_warn("%s: Voltage range not supported for power class\n", 8136606110dSJoe Perches mmc_hostname(host)); 814b87d8dbfSGirish K S return -EINVAL; 815b87d8dbfSGirish K S } 816b87d8dbfSGirish K S 817b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 818b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 819b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 820b87d8dbfSGirish K S else 821b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 822b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 823b87d8dbfSGirish K S 824b87d8dbfSGirish K S /* If the power class is different from the default value */ 825b87d8dbfSGirish K S if (pwrclass_val > 0) { 826b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 827b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 828b87d8dbfSGirish K S pwrclass_val, 82971fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 830b87d8dbfSGirish K S } 831b87d8dbfSGirish K S 832b87d8dbfSGirish K S return err; 833b87d8dbfSGirish K S } 834b87d8dbfSGirish K S 8352385049dSSeungwon Jeon static int mmc_select_powerclass(struct mmc_card *card) 8362385049dSSeungwon Jeon { 8372385049dSSeungwon Jeon struct mmc_host *host = card->host; 8382385049dSSeungwon Jeon u32 bus_width, ext_csd_bits; 8392385049dSSeungwon Jeon int err, ddr; 8402385049dSSeungwon Jeon 8412385049dSSeungwon Jeon /* Power class selection is supported for versions >= 4.0 */ 842148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 8432385049dSSeungwon Jeon return 0; 8442385049dSSeungwon Jeon 8452385049dSSeungwon Jeon bus_width = host->ios.bus_width; 8462385049dSSeungwon Jeon /* Power class values are defined only for 4/8 bit bus */ 8472385049dSSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 8482385049dSSeungwon Jeon return 0; 8492385049dSSeungwon Jeon 8502385049dSSeungwon Jeon ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; 8512385049dSSeungwon Jeon if (ddr) 8522385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 8532385049dSSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 8542385049dSSeungwon Jeon else 8552385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 8562385049dSSeungwon Jeon EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 8572385049dSSeungwon Jeon 8582385049dSSeungwon Jeon err = __mmc_select_powerclass(card, ext_csd_bits); 8592385049dSSeungwon Jeon if (err) 8602385049dSSeungwon Jeon pr_warn("%s: power class selection to bus width %d ddr %d failed\n", 8612385049dSSeungwon Jeon mmc_hostname(host), 1 << bus_width, ddr); 8622385049dSSeungwon Jeon 8632385049dSSeungwon Jeon return err; 8642385049dSSeungwon Jeon } 8652385049dSSeungwon Jeon 866b87d8dbfSGirish K S /* 867577fb131SSeungwon Jeon * Set the bus speed for the selected speed mode. 868a4924c71SGirish K S */ 869577fb131SSeungwon Jeon static void mmc_set_bus_speed(struct mmc_card *card) 870a4924c71SGirish K S { 871577fb131SSeungwon Jeon unsigned int max_dtr = (unsigned int)-1; 872577fb131SSeungwon Jeon 8730a5b6438SSeungwon Jeon if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && 8740a5b6438SSeungwon Jeon max_dtr > card->ext_csd.hs200_max_dtr) 875577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs200_max_dtr; 876577fb131SSeungwon Jeon else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) 877577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs_max_dtr; 878577fb131SSeungwon Jeon else if (max_dtr > card->csd.max_dtr) 879577fb131SSeungwon Jeon max_dtr = card->csd.max_dtr; 880577fb131SSeungwon Jeon 881577fb131SSeungwon Jeon mmc_set_clock(card->host, max_dtr); 882577fb131SSeungwon Jeon } 883577fb131SSeungwon Jeon 884577fb131SSeungwon Jeon /* 885577fb131SSeungwon Jeon * Select the bus width amoung 4-bit and 8-bit(SDR). 886577fb131SSeungwon Jeon * If the bus width is changed successfully, return the selected width value. 887577fb131SSeungwon Jeon * Zero is returned instead of error value if the wide width is not supported. 888577fb131SSeungwon Jeon */ 889577fb131SSeungwon Jeon static int mmc_select_bus_width(struct mmc_card *card) 890577fb131SSeungwon Jeon { 891a4924c71SGirish K S static unsigned ext_csd_bits[] = { 892a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 893577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH_4, 894a4924c71SGirish K S }; 895a4924c71SGirish K S static unsigned bus_widths[] = { 896a4924c71SGirish K S MMC_BUS_WIDTH_8, 897577fb131SSeungwon Jeon MMC_BUS_WIDTH_4, 898a4924c71SGirish K S }; 899577fb131SSeungwon Jeon struct mmc_host *host = card->host; 900577fb131SSeungwon Jeon unsigned idx, bus_width = 0; 901577fb131SSeungwon Jeon int err = 0; 902a4924c71SGirish K S 9031c2d26e3SAlexandre Belloni if (!mmc_can_ext_csd(card) || 904577fb131SSeungwon Jeon !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) 905577fb131SSeungwon Jeon return 0; 906a4924c71SGirish K S 907577fb131SSeungwon Jeon idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; 908a4924c71SGirish K S 909a4924c71SGirish K S /* 910a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 911a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 912a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 913a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 914a4924c71SGirish K S */ 915577fb131SSeungwon Jeon for (; idx < ARRAY_SIZE(bus_widths); idx++) { 916a4924c71SGirish K S /* 917a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 918a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 919a4924c71SGirish K S * mmc switch command returns error then switch to 920a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 921a4924c71SGirish K S * bus width on the host. 922a4924c71SGirish K S */ 923a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 924a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 925a4924c71SGirish K S ext_csd_bits[idx], 926a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 927a4924c71SGirish K S if (err) 928a4924c71SGirish K S continue; 929a4924c71SGirish K S 930577fb131SSeungwon Jeon bus_width = bus_widths[idx]; 931577fb131SSeungwon Jeon mmc_set_bus_width(host, bus_width); 932a4924c71SGirish K S 933577fb131SSeungwon Jeon /* 934577fb131SSeungwon Jeon * If controller can't handle bus width test, 935577fb131SSeungwon Jeon * compare ext_csd previously read in 1 bit mode 936577fb131SSeungwon Jeon * against ext_csd at new bus width 937577fb131SSeungwon Jeon */ 938a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 939577fb131SSeungwon Jeon err = mmc_compare_ext_csds(card, bus_width); 940a4924c71SGirish K S else 941577fb131SSeungwon Jeon err = mmc_bus_test(card, bus_width); 942577fb131SSeungwon Jeon 943577fb131SSeungwon Jeon if (!err) { 944577fb131SSeungwon Jeon err = bus_width; 945a4924c71SGirish K S break; 946577fb131SSeungwon Jeon } else { 947577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d failed\n", 948577fb131SSeungwon Jeon mmc_hostname(host), ext_csd_bits[idx]); 949577fb131SSeungwon Jeon } 950a4924c71SGirish K S } 951a4924c71SGirish K S 952577fb131SSeungwon Jeon return err; 953577fb131SSeungwon Jeon } 954577fb131SSeungwon Jeon 955577fb131SSeungwon Jeon /* 956577fb131SSeungwon Jeon * Switch to the high-speed mode 957577fb131SSeungwon Jeon */ 958577fb131SSeungwon Jeon static int mmc_select_hs(struct mmc_card *card) 959577fb131SSeungwon Jeon { 960577fb131SSeungwon Jeon int err; 961577fb131SSeungwon Jeon 9624509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 963577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 96457de31f6SUlf Hansson card->ext_csd.generic_cmd6_time, 96557de31f6SUlf Hansson true, true, true); 966577fb131SSeungwon Jeon if (!err) 967577fb131SSeungwon Jeon mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 968577fb131SSeungwon Jeon 969577fb131SSeungwon Jeon return err; 970577fb131SSeungwon Jeon } 971577fb131SSeungwon Jeon 972577fb131SSeungwon Jeon /* 973577fb131SSeungwon Jeon * Activate wide bus and DDR if supported. 974577fb131SSeungwon Jeon */ 975577fb131SSeungwon Jeon static int mmc_select_hs_ddr(struct mmc_card *card) 976577fb131SSeungwon Jeon { 977577fb131SSeungwon Jeon struct mmc_host *host = card->host; 978577fb131SSeungwon Jeon u32 bus_width, ext_csd_bits; 979577fb131SSeungwon Jeon int err = 0; 980577fb131SSeungwon Jeon 981577fb131SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) 982577fb131SSeungwon Jeon return 0; 983577fb131SSeungwon Jeon 984577fb131SSeungwon Jeon bus_width = host->ios.bus_width; 985577fb131SSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 986577fb131SSeungwon Jeon return 0; 987577fb131SSeungwon Jeon 988577fb131SSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 989577fb131SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 990577fb131SSeungwon Jeon 991577fb131SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 992577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH, 993577fb131SSeungwon Jeon ext_csd_bits, 994577fb131SSeungwon Jeon card->ext_csd.generic_cmd6_time); 995577fb131SSeungwon Jeon if (err) { 9964b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width %d ddr failed\n", 997577fb131SSeungwon Jeon mmc_hostname(host), 1 << bus_width); 998577fb131SSeungwon Jeon return err; 999577fb131SSeungwon Jeon } 1000577fb131SSeungwon Jeon 1001577fb131SSeungwon Jeon /* 1002577fb131SSeungwon Jeon * eMMC cards can support 3.3V to 1.2V i/o (vccq) 1003577fb131SSeungwon Jeon * signaling. 1004577fb131SSeungwon Jeon * 1005577fb131SSeungwon Jeon * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 1006577fb131SSeungwon Jeon * 1007577fb131SSeungwon Jeon * 1.8V vccq at 3.3V core voltage (vcc) is not required 1008577fb131SSeungwon Jeon * in the JEDEC spec for DDR. 1009577fb131SSeungwon Jeon * 1010312449efSChuanxiao.Dong * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all 1011312449efSChuanxiao.Dong * host controller can support this, like some of the SDHCI 1012312449efSChuanxiao.Dong * controller which connect to an eMMC device. Some of these 1013312449efSChuanxiao.Dong * host controller still needs to use 1.8v vccq for supporting 1014312449efSChuanxiao.Dong * DDR mode. 1015312449efSChuanxiao.Dong * 1016312449efSChuanxiao.Dong * So the sequence will be: 1017312449efSChuanxiao.Dong * if (host and device can both support 1.2v IO) 1018312449efSChuanxiao.Dong * use 1.2v IO; 1019312449efSChuanxiao.Dong * else if (host and device can both support 1.8v IO) 1020312449efSChuanxiao.Dong * use 1.8v IO; 1021312449efSChuanxiao.Dong * so if host and device can only support 3.3v IO, this is the 1022312449efSChuanxiao.Dong * last choice. 1023577fb131SSeungwon Jeon * 1024577fb131SSeungwon Jeon * WARNING: eMMC rules are NOT the same as SD DDR 1025577fb131SSeungwon Jeon */ 1026312449efSChuanxiao.Dong err = -EINVAL; 1027312449efSChuanxiao.Dong if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) 1028312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1029577fb131SSeungwon Jeon 1030312449efSChuanxiao.Dong if (err && (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V)) 1031312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1032312449efSChuanxiao.Dong 1033312449efSChuanxiao.Dong /* make sure vccq is 3.3v after switching disaster */ 1034312449efSChuanxiao.Dong if (err) 1035312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); 1036312449efSChuanxiao.Dong 1037312449efSChuanxiao.Dong if (!err) 1038577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_DDR52); 1039577fb131SSeungwon Jeon 1040577fb131SSeungwon Jeon return err; 1041577fb131SSeungwon Jeon } 1042577fb131SSeungwon Jeon 10430a5b6438SSeungwon Jeon static int mmc_select_hs400(struct mmc_card *card) 10440a5b6438SSeungwon Jeon { 10450a5b6438SSeungwon Jeon struct mmc_host *host = card->host; 10460a5b6438SSeungwon Jeon int err = 0; 1047cc4f414cSAdrian Hunter u8 val; 10480a5b6438SSeungwon Jeon 10490a5b6438SSeungwon Jeon /* 10500a5b6438SSeungwon Jeon * HS400 mode requires 8-bit bus width 10510a5b6438SSeungwon Jeon */ 10520a5b6438SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 10530a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8)) 10540a5b6438SSeungwon Jeon return 0; 10550a5b6438SSeungwon Jeon 10560a5b6438SSeungwon Jeon /* 10570a5b6438SSeungwon Jeon * Before switching to dual data rate operation for HS400, 10580a5b6438SSeungwon Jeon * it is required to convert from HS200 mode to HS mode. 10590a5b6438SSeungwon Jeon */ 10600a5b6438SSeungwon Jeon mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 10610a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 10620a5b6438SSeungwon Jeon 1063cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS | 1064cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 10650a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1066cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 10670a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time, 10680a5b6438SSeungwon Jeon true, true, true); 10690a5b6438SSeungwon Jeon if (err) { 10704b75bffcSAndrew Gabbasov pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", 10710a5b6438SSeungwon Jeon mmc_hostname(host), err); 10720a5b6438SSeungwon Jeon return err; 10730a5b6438SSeungwon Jeon } 10740a5b6438SSeungwon Jeon 10750a5b6438SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10760a5b6438SSeungwon Jeon EXT_CSD_BUS_WIDTH, 10770a5b6438SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8, 10780a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time); 10790a5b6438SSeungwon Jeon if (err) { 10804b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width for hs400 failed, err:%d\n", 10810a5b6438SSeungwon Jeon mmc_hostname(host), err); 10820a5b6438SSeungwon Jeon return err; 10830a5b6438SSeungwon Jeon } 10840a5b6438SSeungwon Jeon 1085cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS400 | 1086cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 10870a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1088cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 10890a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time, 10900a5b6438SSeungwon Jeon true, true, true); 10910a5b6438SSeungwon Jeon if (err) { 10924b75bffcSAndrew Gabbasov pr_err("%s: switch to hs400 failed, err:%d\n", 10930a5b6438SSeungwon Jeon mmc_hostname(host), err); 10940a5b6438SSeungwon Jeon return err; 10950a5b6438SSeungwon Jeon } 10960a5b6438SSeungwon Jeon 10970a5b6438SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS400); 10980a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 10990a5b6438SSeungwon Jeon 11000a5b6438SSeungwon Jeon return 0; 11010a5b6438SSeungwon Jeon } 11020a5b6438SSeungwon Jeon 11036376f69dSAdrian Hunter int mmc_hs200_to_hs400(struct mmc_card *card) 11046376f69dSAdrian Hunter { 11056376f69dSAdrian Hunter return mmc_select_hs400(card); 11066376f69dSAdrian Hunter } 11076376f69dSAdrian Hunter 11086376f69dSAdrian Hunter /* Caller must hold re-tuning */ 11096376f69dSAdrian Hunter static int mmc_switch_status(struct mmc_card *card) 11106376f69dSAdrian Hunter { 11116376f69dSAdrian Hunter u32 status; 11126376f69dSAdrian Hunter int err; 11136376f69dSAdrian Hunter 11146376f69dSAdrian Hunter err = mmc_send_status(card, &status); 11156376f69dSAdrian Hunter if (err) 11166376f69dSAdrian Hunter return err; 11176376f69dSAdrian Hunter 11186376f69dSAdrian Hunter return mmc_switch_status_error(card->host, status); 11196376f69dSAdrian Hunter } 11206376f69dSAdrian Hunter 11216376f69dSAdrian Hunter int mmc_hs400_to_hs200(struct mmc_card *card) 11226376f69dSAdrian Hunter { 11236376f69dSAdrian Hunter struct mmc_host *host = card->host; 11246376f69dSAdrian Hunter bool send_status = true; 11256376f69dSAdrian Hunter unsigned int max_dtr; 11266376f69dSAdrian Hunter int err; 1127cc4f414cSAdrian Hunter u8 val; 11286376f69dSAdrian Hunter 11296376f69dSAdrian Hunter if (host->caps & MMC_CAP_WAIT_WHILE_BUSY) 11306376f69dSAdrian Hunter send_status = false; 11316376f69dSAdrian Hunter 11326376f69dSAdrian Hunter /* Reduce frequency to HS */ 11336376f69dSAdrian Hunter max_dtr = card->ext_csd.hs_max_dtr; 11346376f69dSAdrian Hunter mmc_set_clock(host, max_dtr); 11356376f69dSAdrian Hunter 11366376f69dSAdrian Hunter /* Switch HS400 to HS DDR */ 1137cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS | 1138cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 11396376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1140cc4f414cSAdrian Hunter val, card->ext_csd.generic_cmd6_time, 11416376f69dSAdrian Hunter true, send_status, true); 11426376f69dSAdrian Hunter if (err) 11436376f69dSAdrian Hunter goto out_err; 11446376f69dSAdrian Hunter 11456376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_DDR52); 11466376f69dSAdrian Hunter 11476376f69dSAdrian Hunter if (!send_status) { 11486376f69dSAdrian Hunter err = mmc_switch_status(card); 11496376f69dSAdrian Hunter if (err) 11506376f69dSAdrian Hunter goto out_err; 11516376f69dSAdrian Hunter } 11526376f69dSAdrian Hunter 11536376f69dSAdrian Hunter /* Switch HS DDR to HS */ 11546376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, 11556376f69dSAdrian Hunter EXT_CSD_BUS_WIDTH_8, card->ext_csd.generic_cmd6_time, 11566376f69dSAdrian Hunter true, send_status, true); 11576376f69dSAdrian Hunter if (err) 11586376f69dSAdrian Hunter goto out_err; 11596376f69dSAdrian Hunter 11606376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS); 11616376f69dSAdrian Hunter 11626376f69dSAdrian Hunter if (!send_status) { 11636376f69dSAdrian Hunter err = mmc_switch_status(card); 11646376f69dSAdrian Hunter if (err) 11656376f69dSAdrian Hunter goto out_err; 11666376f69dSAdrian Hunter } 11676376f69dSAdrian Hunter 11686376f69dSAdrian Hunter /* Switch HS to HS200 */ 1169cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1170cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 11716376f69dSAdrian Hunter err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_HS_TIMING, 1172cc4f414cSAdrian Hunter val, card->ext_csd.generic_cmd6_time, true, 1173cc4f414cSAdrian Hunter send_status, true); 11746376f69dSAdrian Hunter if (err) 11756376f69dSAdrian Hunter goto out_err; 11766376f69dSAdrian Hunter 11776376f69dSAdrian Hunter mmc_set_timing(host, MMC_TIMING_MMC_HS200); 11786376f69dSAdrian Hunter 11796376f69dSAdrian Hunter if (!send_status) { 11806376f69dSAdrian Hunter err = mmc_switch_status(card); 11816376f69dSAdrian Hunter if (err) 11826376f69dSAdrian Hunter goto out_err; 11836376f69dSAdrian Hunter } 11846376f69dSAdrian Hunter 11856376f69dSAdrian Hunter mmc_set_bus_speed(card); 11866376f69dSAdrian Hunter 11876376f69dSAdrian Hunter return 0; 11886376f69dSAdrian Hunter 11896376f69dSAdrian Hunter out_err: 11906376f69dSAdrian Hunter pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host), 11916376f69dSAdrian Hunter __func__, err); 11926376f69dSAdrian Hunter return err; 11936376f69dSAdrian Hunter } 11946376f69dSAdrian Hunter 1195cc4f414cSAdrian Hunter static void mmc_select_driver_type(struct mmc_card *card) 1196cc4f414cSAdrian Hunter { 1197cc4f414cSAdrian Hunter int card_drv_type, drive_strength, drv_type; 1198cc4f414cSAdrian Hunter 1199cc4f414cSAdrian Hunter card_drv_type = card->ext_csd.raw_driver_strength | 1200cc4f414cSAdrian Hunter mmc_driver_type_mask(0); 1201cc4f414cSAdrian Hunter 1202cc4f414cSAdrian Hunter drive_strength = mmc_select_drive_strength(card, 1203cc4f414cSAdrian Hunter card->ext_csd.hs200_max_dtr, 1204cc4f414cSAdrian Hunter card_drv_type, &drv_type); 1205cc4f414cSAdrian Hunter 1206cc4f414cSAdrian Hunter card->drive_strength = drive_strength; 1207cc4f414cSAdrian Hunter 1208cc4f414cSAdrian Hunter if (drv_type) 1209cc4f414cSAdrian Hunter mmc_set_driver_type(card->host, drv_type); 1210cc4f414cSAdrian Hunter } 1211cc4f414cSAdrian Hunter 1212577fb131SSeungwon Jeon /* 1213577fb131SSeungwon Jeon * For device supporting HS200 mode, the following sequence 1214577fb131SSeungwon Jeon * should be done before executing the tuning process. 1215577fb131SSeungwon Jeon * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) 1216577fb131SSeungwon Jeon * 2. switch to HS200 mode 1217577fb131SSeungwon Jeon * 3. set the clock to > 52Mhz and <=200MHz 1218577fb131SSeungwon Jeon */ 1219577fb131SSeungwon Jeon static int mmc_select_hs200(struct mmc_card *card) 1220577fb131SSeungwon Jeon { 1221577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1222577fb131SSeungwon Jeon int err = -EINVAL; 1223cc4f414cSAdrian Hunter u8 val; 1224577fb131SSeungwon Jeon 1225577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) 1226577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1227577fb131SSeungwon Jeon 1228577fb131SSeungwon Jeon if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) 1229577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1230577fb131SSeungwon Jeon 1231577fb131SSeungwon Jeon /* If fails try again during next card power cycle */ 1232577fb131SSeungwon Jeon if (err) 1233577fb131SSeungwon Jeon goto err; 1234577fb131SSeungwon Jeon 1235cc4f414cSAdrian Hunter mmc_select_driver_type(card); 1236cc4f414cSAdrian Hunter 1237577fb131SSeungwon Jeon /* 1238577fb131SSeungwon Jeon * Set the bus width(4 or 8) with host's support and 1239577fb131SSeungwon Jeon * switch to HS200 mode if bus width is set successfully. 1240577fb131SSeungwon Jeon */ 1241577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 1242577fb131SSeungwon Jeon if (!IS_ERR_VALUE(err)) { 1243cc4f414cSAdrian Hunter val = EXT_CSD_TIMING_HS200 | 1244cc4f414cSAdrian Hunter card->drive_strength << EXT_CSD_DRV_STR_SHIFT; 1245577fb131SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1246cc4f414cSAdrian Hunter EXT_CSD_HS_TIMING, val, 1247577fb131SSeungwon Jeon card->ext_csd.generic_cmd6_time, 1248577fb131SSeungwon Jeon true, true, true); 1249577fb131SSeungwon Jeon if (!err) 1250577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS200); 1251577fb131SSeungwon Jeon } 1252a4924c71SGirish K S err: 1253a4924c71SGirish K S return err; 1254a4924c71SGirish K S } 1255a4924c71SGirish K S 1256a4924c71SGirish K S /* 1257577fb131SSeungwon Jeon * Activate High Speed or HS200 mode if supported. 1258577fb131SSeungwon Jeon */ 1259577fb131SSeungwon Jeon static int mmc_select_timing(struct mmc_card *card) 1260577fb131SSeungwon Jeon { 1261577fb131SSeungwon Jeon int err = 0; 1262577fb131SSeungwon Jeon 1263148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 1264577fb131SSeungwon Jeon goto bus_speed; 1265577fb131SSeungwon Jeon 1266577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) 1267577fb131SSeungwon Jeon err = mmc_select_hs200(card); 1268577fb131SSeungwon Jeon else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) 1269577fb131SSeungwon Jeon err = mmc_select_hs(card); 1270577fb131SSeungwon Jeon 1271577fb131SSeungwon Jeon if (err && err != -EBADMSG) 1272577fb131SSeungwon Jeon return err; 1273577fb131SSeungwon Jeon 1274577fb131SSeungwon Jeon if (err) { 1275577fb131SSeungwon Jeon pr_warn("%s: switch to %s failed\n", 1276577fb131SSeungwon Jeon mmc_card_hs(card) ? "high-speed" : 1277577fb131SSeungwon Jeon (mmc_card_hs200(card) ? "hs200" : ""), 1278577fb131SSeungwon Jeon mmc_hostname(card->host)); 1279577fb131SSeungwon Jeon err = 0; 1280577fb131SSeungwon Jeon } 1281577fb131SSeungwon Jeon 1282577fb131SSeungwon Jeon bus_speed: 1283577fb131SSeungwon Jeon /* 1284577fb131SSeungwon Jeon * Set the bus speed to the selected bus timing. 1285577fb131SSeungwon Jeon * If timing is not selected, backward compatible is the default. 1286577fb131SSeungwon Jeon */ 1287577fb131SSeungwon Jeon mmc_set_bus_speed(card); 1288577fb131SSeungwon Jeon return err; 1289577fb131SSeungwon Jeon } 1290577fb131SSeungwon Jeon 1291577fb131SSeungwon Jeon /* 1292577fb131SSeungwon Jeon * Execute tuning sequence to seek the proper bus operating 12930a5b6438SSeungwon Jeon * conditions for HS200 and HS400, which sends CMD21 to the device. 1294577fb131SSeungwon Jeon */ 1295577fb131SSeungwon Jeon static int mmc_hs200_tuning(struct mmc_card *card) 1296577fb131SSeungwon Jeon { 1297577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1298577fb131SSeungwon Jeon 12990a5b6438SSeungwon Jeon /* 13000a5b6438SSeungwon Jeon * Timing should be adjusted to the HS400 target 13010a5b6438SSeungwon Jeon * operation frequency for tuning process 13020a5b6438SSeungwon Jeon */ 13030a5b6438SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 13040a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8) 13050a5b6438SSeungwon Jeon if (host->ops->prepare_hs400_tuning) 13060a5b6438SSeungwon Jeon host->ops->prepare_hs400_tuning(host, &host->ios); 13070a5b6438SSeungwon Jeon 130863e415c6SAdrian Hunter return mmc_execute_tuning(card); 1309577fb131SSeungwon Jeon } 1310577fb131SSeungwon Jeon 1311577fb131SSeungwon Jeon /* 13126abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 13136abaa0c9SPierre Ossman * 13148769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 13156abaa0c9SPierre Ossman * we're trying to reinitialise. 13167ea239d9SPierre Ossman */ 13178c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 13186abaa0c9SPierre Ossman struct mmc_card *oldcard) 13197ea239d9SPierre Ossman { 13207ea239d9SPierre Ossman struct mmc_card *card; 1321577fb131SSeungwon Jeon int err; 13227ea239d9SPierre Ossman u32 cid[4]; 1323b676f039SPhilip Rakity u32 rocr; 13247ea239d9SPierre Ossman 13257ea239d9SPierre Ossman BUG_ON(!host); 1326d84075c8SPierre Ossman WARN_ON(!host->claimed); 13277ea239d9SPierre Ossman 132844669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 132944669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 133044669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 133144669034SStefan Nilsson XK 13327ea239d9SPierre Ossman /* 13337ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 13347ea239d9SPierre Ossman * need to tell some cards to go back to the idle 13357ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 13367ea239d9SPierre Ossman * respond. 1337c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 13387ea239d9SPierre Ossman */ 13397ea239d9SPierre Ossman mmc_go_idle(host); 13407ea239d9SPierre Ossman 13417ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 1342b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 134317b0429dSPierre Ossman if (err) 13446abaa0c9SPierre Ossman goto err; 13457ea239d9SPierre Ossman 13467ea239d9SPierre Ossman /* 1347af517150SDavid Brownell * For SPI, enable CRC as appropriate. 1348af517150SDavid Brownell */ 1349af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1350af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 1351af517150SDavid Brownell if (err) 1352af517150SDavid Brownell goto err; 1353af517150SDavid Brownell } 1354af517150SDavid Brownell 1355af517150SDavid Brownell /* 13567ea239d9SPierre Ossman * Fetch CID from card. 13577ea239d9SPierre Ossman */ 1358af517150SDavid Brownell if (mmc_host_is_spi(host)) 1359af517150SDavid Brownell err = mmc_send_cid(host, cid); 1360af517150SDavid Brownell else 13617ea239d9SPierre Ossman err = mmc_all_send_cid(host, cid); 136217b0429dSPierre Ossman if (err) 13637ea239d9SPierre Ossman goto err; 13647ea239d9SPierre Ossman 13656abaa0c9SPierre Ossman if (oldcard) { 1366adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 1367adf66a0dSPierre Ossman err = -ENOENT; 13686abaa0c9SPierre Ossman goto err; 1369adf66a0dSPierre Ossman } 13706abaa0c9SPierre Ossman 13716abaa0c9SPierre Ossman card = oldcard; 13726abaa0c9SPierre Ossman } else { 13737ea239d9SPierre Ossman /* 13747ea239d9SPierre Ossman * Allocate card structure. 13757ea239d9SPierre Ossman */ 137651ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 1377adf66a0dSPierre Ossman if (IS_ERR(card)) { 1378adf66a0dSPierre Ossman err = PTR_ERR(card); 13797ea239d9SPierre Ossman goto err; 1380adf66a0dSPierre Ossman } 13817ea239d9SPierre Ossman 138269041150SUlf Hansson card->ocr = ocr; 13837ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 13847ea239d9SPierre Ossman card->rca = 1; 13857ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 13866abaa0c9SPierre Ossman } 13877ea239d9SPierre Ossman 13887ea239d9SPierre Ossman /* 1389eac86321SDoug Anderson * Call the optional HC's init_card function to handle quirks. 1390eac86321SDoug Anderson */ 1391eac86321SDoug Anderson if (host->ops->init_card) 1392eac86321SDoug Anderson host->ops->init_card(host, card); 1393eac86321SDoug Anderson 1394eac86321SDoug Anderson /* 1395af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 13967ea239d9SPierre Ossman */ 1397af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 13987ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 139917b0429dSPierre Ossman if (err) 14007ea239d9SPierre Ossman goto free_card; 14017ea239d9SPierre Ossman 14027ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 1403af517150SDavid Brownell } 14047ea239d9SPierre Ossman 14056abaa0c9SPierre Ossman if (!oldcard) { 14067ea239d9SPierre Ossman /* 14077ea239d9SPierre Ossman * Fetch CSD from card. 14087ea239d9SPierre Ossman */ 14097ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 141017b0429dSPierre Ossman if (err) 14117ea239d9SPierre Ossman goto free_card; 14127ea239d9SPierre Ossman 1413bd766312SPierre Ossman err = mmc_decode_csd(card); 1414adf66a0dSPierre Ossman if (err) 1415bd766312SPierre Ossman goto free_card; 1416bd766312SPierre Ossman err = mmc_decode_cid(card); 1417adf66a0dSPierre Ossman if (err) 1418bd766312SPierre Ossman goto free_card; 14196abaa0c9SPierre Ossman } 14207ea239d9SPierre Ossman 14217ea239d9SPierre Ossman /* 14223d705d14SSascha Hauer * handling only for cards supporting DSR and hosts requesting 14233d705d14SSascha Hauer * DSR configuration 14243d705d14SSascha Hauer */ 14253d705d14SSascha Hauer if (card->csd.dsr_imp && host->dsr_req) 14263d705d14SSascha Hauer mmc_set_dsr(host); 14273d705d14SSascha Hauer 14283d705d14SSascha Hauer /* 142989a73cf5SPierre Ossman * Select card, as all following commands rely on that. 14307ea239d9SPierre Ossman */ 1431af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 14327ea239d9SPierre Ossman err = mmc_select_card(card); 143317b0429dSPierre Ossman if (err) 14347ea239d9SPierre Ossman goto free_card; 1435af517150SDavid Brownell } 14367ea239d9SPierre Ossman 14376abaa0c9SPierre Ossman if (!oldcard) { 1438076ec38aSUlf Hansson /* Read extended CSD. */ 1439076ec38aSUlf Hansson err = mmc_read_ext_csd(card); 144017b0429dSPierre Ossman if (err) 14417ea239d9SPierre Ossman goto free_card; 1442b676f039SPhilip Rakity 1443b676f039SPhilip Rakity /* If doing byte addressing, check if required to do sector 1444b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 1445b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 1446b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 1447b676f039SPhilip Rakity */ 1448b676f039SPhilip Rakity if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) 1449b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 1450b676f039SPhilip Rakity 1451dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 1452dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 14536abaa0c9SPierre Ossman } 14547ea239d9SPierre Ossman 14557ea239d9SPierre Ossman /* 1456709de99dSChuanxiao Dong * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF 1457709de99dSChuanxiao Dong * bit. This bit will be lost every time after a reset or power off. 1458709de99dSChuanxiao Dong */ 145969803d4fSGrégory Soutadé if (card->ext_csd.partition_setting_completed || 146083bb24aaSAdrian Hunter (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { 1461709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1462b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1463b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1464709de99dSChuanxiao Dong 1465709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1466709de99dSChuanxiao Dong goto free_card; 1467709de99dSChuanxiao Dong 1468709de99dSChuanxiao Dong if (err) { 1469709de99dSChuanxiao Dong err = 0; 1470709de99dSChuanxiao Dong /* 1471709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1472709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1473709de99dSChuanxiao Dong * during next time reinit 1474709de99dSChuanxiao Dong */ 1475709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1476709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1477709de99dSChuanxiao Dong } else { 1478709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1479709de99dSChuanxiao Dong /* 1480709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1481709de99dSChuanxiao Dong * This will affect the erase size, so 1482709de99dSChuanxiao Dong * here need to reset erase size 1483709de99dSChuanxiao Dong */ 1484709de99dSChuanxiao Dong mmc_set_erase_size(card); 1485709de99dSChuanxiao Dong } 1486709de99dSChuanxiao Dong } 1487709de99dSChuanxiao Dong 1488709de99dSChuanxiao Dong /* 148941e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 149041e2a489SPhilip Rakity */ 1491371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1492371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1493371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1494371a689fSAndrei Warkentin card->ext_csd.part_config, 1495371a689fSAndrei Warkentin card->ext_csd.part_time); 1496371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1497371a689fSAndrei Warkentin goto free_card; 149841e2a489SPhilip Rakity } 149941e2a489SPhilip Rakity 150041e2a489SPhilip Rakity /* 150143235679SUlf Hansson * Enable power_off_notification byte in the ext_csd register 1502bec8726aSGirish K S */ 150343235679SUlf Hansson if (card->ext_csd.rev >= 6) { 1504bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1505bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1506bec8726aSGirish K S EXT_CSD_POWER_ON, 1507bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1508bec8726aSGirish K S if (err && err != -EBADMSG) 1509bec8726aSGirish K S goto free_card; 1510bec8726aSGirish K S 151196a85d54SGirish K S /* 151296a85d54SGirish K S * The err can be -EBADMSG or 0, 151396a85d54SGirish K S * so check for success and update the flag 151496a85d54SGirish K S */ 1515bec8726aSGirish K S if (!err) 1516e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 151796a85d54SGirish K S } 1518bec8726aSGirish K S 1519bec8726aSGirish K S /* 1520577fb131SSeungwon Jeon * Select timing interface 152189a73cf5SPierre Ossman */ 1522577fb131SSeungwon Jeon err = mmc_select_timing(card); 1523577fb131SSeungwon Jeon if (err) 152489a73cf5SPierre Ossman goto free_card; 152589a73cf5SPierre Ossman 1526a4924c71SGirish K S if (mmc_card_hs200(card)) { 1527577fb131SSeungwon Jeon err = mmc_hs200_tuning(card); 15284c4cb171SPhilip Rakity if (err) 15294b75bffcSAndrew Gabbasov goto free_card; 15300a5b6438SSeungwon Jeon 15310a5b6438SSeungwon Jeon err = mmc_select_hs400(card); 15320a5b6438SSeungwon Jeon if (err) 15334b75bffcSAndrew Gabbasov goto free_card; 1534577fb131SSeungwon Jeon } else if (mmc_card_hs(card)) { 1535577fb131SSeungwon Jeon /* Select the desired bus width optionally */ 1536577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 1537577fb131SSeungwon Jeon if (!IS_ERR_VALUE(err)) { 1538577fb131SSeungwon Jeon err = mmc_select_hs_ddr(card); 1539577fb131SSeungwon Jeon if (err) 15404b75bffcSAndrew Gabbasov goto free_card; 154189a73cf5SPierre Ossman } 1542ef0b27d4SAdrian Hunter } 154389a73cf5SPierre Ossman 1544881d1c25SSeungwon Jeon /* 15452385049dSSeungwon Jeon * Choose the power class with selected bus interface 15462385049dSSeungwon Jeon */ 15472385049dSSeungwon Jeon mmc_select_powerclass(card); 15482385049dSSeungwon Jeon 15492385049dSSeungwon Jeon /* 155052d0974eSSubhash Jadavani * Enable HPI feature (if supported) 155152d0974eSSubhash Jadavani */ 155252d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 155352d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 155452d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 155552d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 155652d0974eSSubhash Jadavani if (err && err != -EBADMSG) 155752d0974eSSubhash Jadavani goto free_card; 155852d0974eSSubhash Jadavani if (err) { 15596606110dSJoe Perches pr_warn("%s: Enabling HPI failed\n", 156052d0974eSSubhash Jadavani mmc_hostname(card->host)); 156152d0974eSSubhash Jadavani err = 0; 156252d0974eSSubhash Jadavani } else 156352d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 156452d0974eSSubhash Jadavani } 156552d0974eSSubhash Jadavani 156652d0974eSSubhash Jadavani /* 1567881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1568881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1569881d1c25SSeungwon Jeon */ 15707536d3f8SUlf Hansson if (card->ext_csd.cache_size > 0) { 1571881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 15728bc0678bSSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 15738bc0678bSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1574881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1575881d1c25SSeungwon Jeon goto free_card; 1576881d1c25SSeungwon Jeon 1577881d1c25SSeungwon Jeon /* 1578881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1579881d1c25SSeungwon Jeon */ 15808bc0678bSSeungwon Jeon if (err) { 15816606110dSJoe Perches pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", 15828bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 15838bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 15848bc0678bSSeungwon Jeon err = 0; 15858bc0678bSSeungwon Jeon } else { 15868bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 15878bc0678bSSeungwon Jeon } 1588881d1c25SSeungwon Jeon } 1589881d1c25SSeungwon Jeon 1590abd9ac14SSeungwon Jeon /* 1591abd9ac14SSeungwon Jeon * The mandatory minimum values are defined for packed command. 1592abd9ac14SSeungwon Jeon * read: 5, write: 3 1593abd9ac14SSeungwon Jeon */ 1594abd9ac14SSeungwon Jeon if (card->ext_csd.max_packed_writes >= 3 && 1595abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads >= 5 && 1596abd9ac14SSeungwon Jeon host->caps2 & MMC_CAP2_PACKED_CMD) { 1597abd9ac14SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1598abd9ac14SSeungwon Jeon EXT_CSD_EXP_EVENTS_CTRL, 1599abd9ac14SSeungwon Jeon EXT_CSD_PACKED_EVENT_EN, 1600abd9ac14SSeungwon Jeon card->ext_csd.generic_cmd6_time); 1601abd9ac14SSeungwon Jeon if (err && err != -EBADMSG) 1602abd9ac14SSeungwon Jeon goto free_card; 1603abd9ac14SSeungwon Jeon if (err) { 1604abd9ac14SSeungwon Jeon pr_warn("%s: Enabling packed event failed\n", 1605abd9ac14SSeungwon Jeon mmc_hostname(card->host)); 1606abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 0; 1607abd9ac14SSeungwon Jeon err = 0; 1608abd9ac14SSeungwon Jeon } else { 1609abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 1; 1610abd9ac14SSeungwon Jeon } 1611abd9ac14SSeungwon Jeon } 1612abd9ac14SSeungwon Jeon 16136abaa0c9SPierre Ossman if (!oldcard) 16147ea239d9SPierre Ossman host->card = card; 16157ea239d9SPierre Ossman 161617b0429dSPierre Ossman return 0; 16176abaa0c9SPierre Ossman 16186abaa0c9SPierre Ossman free_card: 16196abaa0c9SPierre Ossman if (!oldcard) 16206abaa0c9SPierre Ossman mmc_remove_card(card); 16216abaa0c9SPierre Ossman err: 1622adf66a0dSPierre Ossman return err; 16236abaa0c9SPierre Ossman } 16246abaa0c9SPierre Ossman 162507a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 162607a68216SUlf Hansson { 162707a68216SUlf Hansson return (card && card->ext_csd.rev >= 3); 162807a68216SUlf Hansson } 162907a68216SUlf Hansson 163007a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 163107a68216SUlf Hansson { 163207a68216SUlf Hansson struct mmc_command cmd = {0}; 163307a68216SUlf Hansson struct mmc_card *card = host->card; 1634cb962e04SUlf Hansson unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); 163507a68216SUlf Hansson int err; 163607a68216SUlf Hansson 1637436f8daaSAdrian Hunter /* Re-tuning can't be done once the card is deselected */ 1638436f8daaSAdrian Hunter mmc_retune_hold(host); 1639436f8daaSAdrian Hunter 164007a68216SUlf Hansson err = mmc_deselect_cards(host); 164107a68216SUlf Hansson if (err) 1642436f8daaSAdrian Hunter goto out_release; 164307a68216SUlf Hansson 164407a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 164507a68216SUlf Hansson cmd.arg = card->rca << 16; 164607a68216SUlf Hansson cmd.arg |= 1 << 15; 164707a68216SUlf Hansson 1648cb962e04SUlf Hansson /* 1649cb962e04SUlf Hansson * If the max_busy_timeout of the host is specified, validate it against 1650cb962e04SUlf Hansson * the sleep cmd timeout. A failure means we need to prevent the host 1651cb962e04SUlf Hansson * from doing hw busy detection, which is done by converting to a R1 1652cb962e04SUlf Hansson * response instead of a R1B. 1653cb962e04SUlf Hansson */ 1654cb962e04SUlf Hansson if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { 1655cb962e04SUlf Hansson cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1656cb962e04SUlf Hansson } else { 165707a68216SUlf Hansson cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 1658cb962e04SUlf Hansson cmd.busy_timeout = timeout_ms; 1659cb962e04SUlf Hansson } 1660cb962e04SUlf Hansson 166107a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 166207a68216SUlf Hansson if (err) 1663436f8daaSAdrian Hunter goto out_release; 166407a68216SUlf Hansson 166507a68216SUlf Hansson /* 166607a68216SUlf Hansson * If the host does not wait while the card signals busy, then we will 166707a68216SUlf Hansson * will have to wait the sleep/awake timeout. Note, we cannot use the 166807a68216SUlf Hansson * SEND_STATUS command to poll the status because that command (and most 166907a68216SUlf Hansson * others) is invalid while the card sleeps. 167007a68216SUlf Hansson */ 1671cb962e04SUlf Hansson if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) 1672cb962e04SUlf Hansson mmc_delay(timeout_ms); 167307a68216SUlf Hansson 1674436f8daaSAdrian Hunter out_release: 1675436f8daaSAdrian Hunter mmc_retune_release(host); 167607a68216SUlf Hansson return err; 167707a68216SUlf Hansson } 167807a68216SUlf Hansson 1679e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1680e6c08586SUlf Hansson { 1681e6c08586SUlf Hansson return card && 1682e6c08586SUlf Hansson mmc_card_mmc(card) && 1683e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1684e6c08586SUlf Hansson } 1685e6c08586SUlf Hansson 1686e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1687e6c08586SUlf Hansson { 1688e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1689e6c08586SUlf Hansson int err; 1690e6c08586SUlf Hansson 1691e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1692e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1693e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1694e6c08586SUlf Hansson 1695878e200bSUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1696e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 16974509f847SUlf Hansson notify_type, timeout, true, false, false); 1698e6c08586SUlf Hansson if (err) 1699e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1700e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1701e6c08586SUlf Hansson 1702e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 1703e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 1704e6c08586SUlf Hansson 1705e6c08586SUlf Hansson return err; 1706e6c08586SUlf Hansson } 1707e6c08586SUlf Hansson 17086abaa0c9SPierre Ossman /* 17096abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 17106abaa0c9SPierre Ossman */ 17116abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 17126abaa0c9SPierre Ossman { 17136abaa0c9SPierre Ossman BUG_ON(!host); 17146abaa0c9SPierre Ossman BUG_ON(!host->card); 17156abaa0c9SPierre Ossman 17166abaa0c9SPierre Ossman mmc_remove_card(host->card); 17176abaa0c9SPierre Ossman host->card = NULL; 17186abaa0c9SPierre Ossman } 17196abaa0c9SPierre Ossman 17206abaa0c9SPierre Ossman /* 1721d3049504SAdrian Hunter * Card detection - card is alive. 1722d3049504SAdrian Hunter */ 1723d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1724d3049504SAdrian Hunter { 1725d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1726d3049504SAdrian Hunter } 1727d3049504SAdrian Hunter 1728d3049504SAdrian Hunter /* 17296abaa0c9SPierre Ossman * Card detection callback from host. 17306abaa0c9SPierre Ossman */ 17316abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 17326abaa0c9SPierre Ossman { 17336abaa0c9SPierre Ossman int err; 17346abaa0c9SPierre Ossman 17356abaa0c9SPierre Ossman BUG_ON(!host); 17366abaa0c9SPierre Ossman BUG_ON(!host->card); 17376abaa0c9SPierre Ossman 1738e94cfef6SUlf Hansson mmc_get_card(host->card); 17396abaa0c9SPierre Ossman 17406abaa0c9SPierre Ossman /* 17416abaa0c9SPierre Ossman * Just check if our card has been removed. 17426abaa0c9SPierre Ossman */ 1743d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 17446abaa0c9SPierre Ossman 1745e94cfef6SUlf Hansson mmc_put_card(host->card); 17467ea239d9SPierre Ossman 174717b0429dSPierre Ossman if (err) { 17484101c16aSPierre Ossman mmc_remove(host); 17496abaa0c9SPierre Ossman 17506abaa0c9SPierre Ossman mmc_claim_host(host); 17516abaa0c9SPierre Ossman mmc_detach_bus(host); 17527f7e4129SUlf Hansson mmc_power_off(host); 17536abaa0c9SPierre Ossman mmc_release_host(host); 17546abaa0c9SPierre Ossman } 17556abaa0c9SPierre Ossman } 17566abaa0c9SPierre Ossman 175703d071fcSUlf Hansson static int _mmc_suspend(struct mmc_host *host, bool is_suspend) 17586abaa0c9SPierre Ossman { 1759c3805467SBalaji T K int err = 0; 176003d071fcSUlf Hansson unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : 176103d071fcSUlf Hansson EXT_CSD_POWER_OFF_LONG; 1762c3805467SBalaji T K 17636abaa0c9SPierre Ossman BUG_ON(!host); 17646abaa0c9SPierre Ossman BUG_ON(!host->card); 17656abaa0c9SPierre Ossman 17666abaa0c9SPierre Ossman mmc_claim_host(host); 1767881d926dSMaya Erez 17689ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 17699ec775f7SUlf Hansson goto out; 17709ec775f7SUlf Hansson 177139b9431bSUlf Hansson if (mmc_card_doing_bkops(host->card)) { 177239b9431bSUlf Hansson err = mmc_stop_bkops(host->card); 177339b9431bSUlf Hansson if (err) 177439b9431bSUlf Hansson goto out; 177539b9431bSUlf Hansson } 177639b9431bSUlf Hansson 177710e5d965SUlf Hansson err = mmc_flush_cache(host->card); 1778881d926dSMaya Erez if (err) 1779881d926dSMaya Erez goto out; 1780881d926dSMaya Erez 178143235679SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 178253275c21SUlf Hansson ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) 178303d071fcSUlf Hansson err = mmc_poweroff_notify(host->card, notify_type); 178407a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 178507a68216SUlf Hansson err = mmc_sleep(host); 1786e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 178785e727edSJaehoon Chung err = mmc_deselect_cards(host); 178895cdfb72SNicolas Pitre 17899ec775f7SUlf Hansson if (!err) { 179074590263SUlf Hansson mmc_power_off(host); 17919ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 17929ec775f7SUlf Hansson } 1793881d926dSMaya Erez out: 1794881d926dSMaya Erez mmc_release_host(host); 1795c3805467SBalaji T K return err; 17966abaa0c9SPierre Ossman } 17976abaa0c9SPierre Ossman 17986abaa0c9SPierre Ossman /* 17990cb403a2SUlf Hansson * Suspend callback 180003d071fcSUlf Hansson */ 180103d071fcSUlf Hansson static int mmc_suspend(struct mmc_host *host) 180203d071fcSUlf Hansson { 18030cb403a2SUlf Hansson int err; 18040cb403a2SUlf Hansson 18050cb403a2SUlf Hansson err = _mmc_suspend(host, true); 18060cb403a2SUlf Hansson if (!err) { 18070cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 18080cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 18090cb403a2SUlf Hansson } 18100cb403a2SUlf Hansson 18110cb403a2SUlf Hansson return err; 181203d071fcSUlf Hansson } 181303d071fcSUlf Hansson 181403d071fcSUlf Hansson /* 18156abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 18166abaa0c9SPierre Ossman * and, if so, restore all state to it. 18176abaa0c9SPierre Ossman */ 18180cb403a2SUlf Hansson static int _mmc_resume(struct mmc_host *host) 18196abaa0c9SPierre Ossman { 18209ec775f7SUlf Hansson int err = 0; 18216abaa0c9SPierre Ossman 18226abaa0c9SPierre Ossman BUG_ON(!host); 18236abaa0c9SPierre Ossman BUG_ON(!host->card); 18246abaa0c9SPierre Ossman 18256abaa0c9SPierre Ossman mmc_claim_host(host); 18269ec775f7SUlf Hansson 18279ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 18289ec775f7SUlf Hansson goto out; 18299ec775f7SUlf Hansson 183069041150SUlf Hansson mmc_power_up(host, host->card->ocr); 183169041150SUlf Hansson err = mmc_init_card(host, host->card->ocr, host->card); 18329ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 18332986d0bfSPierre Ossman 18349ec775f7SUlf Hansson out: 18359ec775f7SUlf Hansson mmc_release_host(host); 183695cdfb72SNicolas Pitre return err; 18376abaa0c9SPierre Ossman } 18386abaa0c9SPierre Ossman 18399ec775f7SUlf Hansson /* 18409ec775f7SUlf Hansson * Shutdown callback 18419ec775f7SUlf Hansson */ 18429ec775f7SUlf Hansson static int mmc_shutdown(struct mmc_host *host) 18439ec775f7SUlf Hansson { 18449ec775f7SUlf Hansson int err = 0; 18459ec775f7SUlf Hansson 18469ec775f7SUlf Hansson /* 18479ec775f7SUlf Hansson * In a specific case for poweroff notify, we need to resume the card 18489ec775f7SUlf Hansson * before we can shutdown it properly. 18499ec775f7SUlf Hansson */ 18509ec775f7SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 18519ec775f7SUlf Hansson !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) 18520cb403a2SUlf Hansson err = _mmc_resume(host); 18539ec775f7SUlf Hansson 18549ec775f7SUlf Hansson if (!err) 18559ec775f7SUlf Hansson err = _mmc_suspend(host, false); 18569ec775f7SUlf Hansson 18579ec775f7SUlf Hansson return err; 18589ec775f7SUlf Hansson } 1859c4d770d7SUlf Hansson 1860c4d770d7SUlf Hansson /* 18610cb403a2SUlf Hansson * Callback for resume. 18620cb403a2SUlf Hansson */ 18630cb403a2SUlf Hansson static int mmc_resume(struct mmc_host *host) 18640cb403a2SUlf Hansson { 18654d223782SUlf Hansson int err = 0; 18660cb403a2SUlf Hansson 18674d223782SUlf Hansson if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) { 18680cb403a2SUlf Hansson err = _mmc_resume(host); 18690cb403a2SUlf Hansson pm_runtime_set_active(&host->card->dev); 18700cb403a2SUlf Hansson pm_runtime_mark_last_busy(&host->card->dev); 18714d223782SUlf Hansson } 18720cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 18730cb403a2SUlf Hansson 18740cb403a2SUlf Hansson return err; 18750cb403a2SUlf Hansson } 18760cb403a2SUlf Hansson 18770cb403a2SUlf Hansson /* 1878c4d770d7SUlf Hansson * Callback for runtime_suspend. 1879c4d770d7SUlf Hansson */ 1880c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 1881c4d770d7SUlf Hansson { 1882c4d770d7SUlf Hansson int err; 1883c4d770d7SUlf Hansson 1884c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 1885c4d770d7SUlf Hansson return 0; 1886c4d770d7SUlf Hansson 18870cb403a2SUlf Hansson err = _mmc_suspend(host, true); 18880cc81a8cSUlf Hansson if (err) 1889f42cf8d6SMasanari Iida pr_err("%s: error %d doing aggressive suspend\n", 1890c4d770d7SUlf Hansson mmc_hostname(host), err); 1891c4d770d7SUlf Hansson 1892c4d770d7SUlf Hansson return err; 1893c4d770d7SUlf Hansson } 1894c4d770d7SUlf Hansson 1895c4d770d7SUlf Hansson /* 1896c4d770d7SUlf Hansson * Callback for runtime_resume. 1897c4d770d7SUlf Hansson */ 1898c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 1899c4d770d7SUlf Hansson { 1900c4d770d7SUlf Hansson int err; 1901c4d770d7SUlf Hansson 19024d223782SUlf Hansson if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME))) 1903c4d770d7SUlf Hansson return 0; 1904c4d770d7SUlf Hansson 19050cb403a2SUlf Hansson err = _mmc_resume(host); 1906c4d770d7SUlf Hansson if (err) 1907f42cf8d6SMasanari Iida pr_err("%s: error %d doing aggressive resume\n", 1908c4d770d7SUlf Hansson mmc_hostname(host), err); 1909c4d770d7SUlf Hansson 1910c4d770d7SUlf Hansson return 0; 1911c4d770d7SUlf Hansson } 1912c4d770d7SUlf Hansson 1913f855a371SJohan Rudholm int mmc_can_reset(struct mmc_card *card) 1914f855a371SJohan Rudholm { 1915f855a371SJohan Rudholm u8 rst_n_function; 1916f855a371SJohan Rudholm 1917f855a371SJohan Rudholm rst_n_function = card->ext_csd.rst_n_function; 1918f855a371SJohan Rudholm if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) 1919f855a371SJohan Rudholm return 0; 1920f855a371SJohan Rudholm return 1; 1921f855a371SJohan Rudholm } 1922f855a371SJohan Rudholm EXPORT_SYMBOL(mmc_can_reset); 1923f855a371SJohan Rudholm 1924f855a371SJohan Rudholm static int mmc_reset(struct mmc_host *host) 1925f855a371SJohan Rudholm { 1926f855a371SJohan Rudholm struct mmc_card *card = host->card; 1927f855a371SJohan Rudholm 1928f855a371SJohan Rudholm if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset) 1929f855a371SJohan Rudholm return -EOPNOTSUPP; 1930f855a371SJohan Rudholm 1931f855a371SJohan Rudholm if (!mmc_can_reset(card)) 1932f855a371SJohan Rudholm return -EOPNOTSUPP; 1933f855a371SJohan Rudholm 1934f855a371SJohan Rudholm mmc_set_clock(host, host->f_init); 1935f855a371SJohan Rudholm 1936f855a371SJohan Rudholm host->ops->hw_reset(host); 1937f855a371SJohan Rudholm 1938f855a371SJohan Rudholm /* Set initial state and call mmc_set_ios */ 1939f855a371SJohan Rudholm mmc_set_initial_state(host); 1940f855a371SJohan Rudholm 1941364549ddSUlf Hansson return mmc_init_card(host, card->ocr, card); 1942f855a371SJohan Rudholm } 1943f855a371SJohan Rudholm 19449feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 19459feae246SAdrian Hunter .remove = mmc_remove, 19469feae246SAdrian Hunter .detect = mmc_detect, 19479feae246SAdrian Hunter .suspend = mmc_suspend, 19489feae246SAdrian Hunter .resume = mmc_resume, 1949c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 1950c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 1951d3049504SAdrian Hunter .alive = mmc_alive, 1952486fdbbcSUlf Hansson .shutdown = mmc_shutdown, 1953f855a371SJohan Rudholm .reset = mmc_reset, 19549feae246SAdrian Hunter }; 19559feae246SAdrian Hunter 19566abaa0c9SPierre Ossman /* 19576abaa0c9SPierre Ossman * Starting point for MMC card init. 19586abaa0c9SPierre Ossman */ 1959807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 19606abaa0c9SPierre Ossman { 19616abaa0c9SPierre Ossman int err; 196269041150SUlf Hansson u32 ocr, rocr; 19636abaa0c9SPierre Ossman 19646abaa0c9SPierre Ossman BUG_ON(!host); 1965d84075c8SPierre Ossman WARN_ON(!host->claimed); 19666abaa0c9SPierre Ossman 196744669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 196844669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 196944669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 197044669034SStefan Nilsson XK 1971807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 1972807e8e40SAndy Ross if (err) 1973807e8e40SAndy Ross return err; 1974807e8e40SAndy Ross 19752501c917SUlf Hansson mmc_attach_bus(host, &mmc_ops); 19768f230f45STakashi Iwai if (host->ocr_avail_mmc) 19778f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 19786abaa0c9SPierre Ossman 19796abaa0c9SPierre Ossman /* 1980af517150SDavid Brownell * We need to get OCR a different way for SPI. 1981af517150SDavid Brownell */ 1982af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1983af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 1984af517150SDavid Brownell if (err) 1985af517150SDavid Brownell goto err; 1986af517150SDavid Brownell } 1987af517150SDavid Brownell 198869041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 19896abaa0c9SPierre Ossman 19906abaa0c9SPierre Ossman /* 19916abaa0c9SPierre Ossman * Can we support the voltage of the card? 19926abaa0c9SPierre Ossman */ 199369041150SUlf Hansson if (!rocr) { 1994109b5bedSPierre Ossman err = -EINVAL; 19956abaa0c9SPierre Ossman goto err; 1996109b5bedSPierre Ossman } 19976abaa0c9SPierre Ossman 19986abaa0c9SPierre Ossman /* 19996abaa0c9SPierre Ossman * Detect and init the card. 20006abaa0c9SPierre Ossman */ 200169041150SUlf Hansson err = mmc_init_card(host, rocr, NULL); 200217b0429dSPierre Ossman if (err) 20036abaa0c9SPierre Ossman goto err; 20046abaa0c9SPierre Ossman 20056abaa0c9SPierre Ossman mmc_release_host(host); 20064101c16aSPierre Ossman err = mmc_add_card(host->card); 20077ea239d9SPierre Ossman if (err) 20082986d0bfSPierre Ossman goto remove_card; 20097ea239d9SPierre Ossman 20102860d060SSergei Shtylyov mmc_claim_host(host); 20117ea239d9SPierre Ossman return 0; 20127ea239d9SPierre Ossman 20132986d0bfSPierre Ossman remove_card: 20146abaa0c9SPierre Ossman mmc_remove_card(host->card); 20152986d0bfSPierre Ossman mmc_claim_host(host); 2016807e8e40SAndy Ross host->card = NULL; 20177ea239d9SPierre Ossman err: 20187ea239d9SPierre Ossman mmc_detach_bus(host); 20197ea239d9SPierre Ossman 2020a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 2021109b5bedSPierre Ossman mmc_hostname(host), err); 2022109b5bedSPierre Ossman 2023adf66a0dSPierre Ossman return err; 20247ea239d9SPierre Ossman } 2025