17ea239d9SPierre Ossman /* 270f10482SPierre Ossman * linux/drivers/mmc/core/mmc.c 37ea239d9SPierre Ossman * 47ea239d9SPierre Ossman * Copyright (C) 2003-2004 Russell King, All Rights Reserved. 57ea239d9SPierre Ossman * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. 67ea239d9SPierre Ossman * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved. 77ea239d9SPierre Ossman * 87ea239d9SPierre Ossman * This program is free software; you can redistribute it and/or modify 97ea239d9SPierre Ossman * it under the terms of the GNU General Public License version 2 as 107ea239d9SPierre Ossman * published by the Free Software Foundation. 117ea239d9SPierre Ossman */ 127ea239d9SPierre Ossman 137ea239d9SPierre Ossman #include <linux/err.h> 145a0e3ad6STejun Heo #include <linux/slab.h> 150205a904SPaul Gortmaker #include <linux/stat.h> 160cb403a2SUlf Hansson #include <linux/pm_runtime.h> 177ea239d9SPierre Ossman 187ea239d9SPierre Ossman #include <linux/mmc/host.h> 197ea239d9SPierre Ossman #include <linux/mmc/card.h> 207ea239d9SPierre Ossman #include <linux/mmc/mmc.h> 217ea239d9SPierre Ossman 227ea239d9SPierre Ossman #include "core.h" 234101c16aSPierre Ossman #include "bus.h" 247ea239d9SPierre Ossman #include "mmc_ops.h" 254c4cb171SPhilip Rakity #include "sd_ops.h" 267ea239d9SPierre Ossman 277ea239d9SPierre Ossman static const unsigned int tran_exp[] = { 287ea239d9SPierre Ossman 10000, 100000, 1000000, 10000000, 297ea239d9SPierre Ossman 0, 0, 0, 0 307ea239d9SPierre Ossman }; 317ea239d9SPierre Ossman 327ea239d9SPierre Ossman static const unsigned char tran_mant[] = { 337ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 347ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 357ea239d9SPierre Ossman }; 367ea239d9SPierre Ossman 377ea239d9SPierre Ossman static const unsigned int tacc_exp[] = { 387ea239d9SPierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 397ea239d9SPierre Ossman }; 407ea239d9SPierre Ossman 417ea239d9SPierre Ossman static const unsigned int tacc_mant[] = { 427ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 437ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 447ea239d9SPierre Ossman }; 457ea239d9SPierre Ossman 467ea239d9SPierre Ossman #define UNSTUFF_BITS(resp,start,size) \ 477ea239d9SPierre Ossman ({ \ 487ea239d9SPierre Ossman const int __size = size; \ 497ea239d9SPierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 507ea239d9SPierre Ossman const int __off = 3 - ((start) / 32); \ 517ea239d9SPierre Ossman const int __shft = (start) & 31; \ 527ea239d9SPierre Ossman u32 __res; \ 537ea239d9SPierre Ossman \ 547ea239d9SPierre Ossman __res = resp[__off] >> __shft; \ 557ea239d9SPierre Ossman if (__size + __shft > 32) \ 567ea239d9SPierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 577ea239d9SPierre Ossman __res & __mask; \ 587ea239d9SPierre Ossman }) 597ea239d9SPierre Ossman 607ea239d9SPierre Ossman /* 617ea239d9SPierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 627ea239d9SPierre Ossman */ 63bd766312SPierre Ossman static int mmc_decode_cid(struct mmc_card *card) 647ea239d9SPierre Ossman { 657ea239d9SPierre Ossman u32 *resp = card->raw_cid; 667ea239d9SPierre Ossman 677ea239d9SPierre Ossman /* 687ea239d9SPierre Ossman * The selection of the format here is based upon published 697ea239d9SPierre Ossman * specs from sandisk and from what people have reported. 707ea239d9SPierre Ossman */ 717ea239d9SPierre Ossman switch (card->csd.mmca_vsn) { 727ea239d9SPierre Ossman case 0: /* MMC v1.0 - v1.2 */ 737ea239d9SPierre Ossman case 1: /* MMC v1.4 */ 747ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); 757ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 767ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 777ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 787ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 797ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 807ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 817ea239d9SPierre Ossman card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); 827ea239d9SPierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); 837ea239d9SPierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); 847ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 24); 857ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 867ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 877ea239d9SPierre Ossman break; 887ea239d9SPierre Ossman 897ea239d9SPierre Ossman case 2: /* MMC v2.0 - v2.2 */ 907ea239d9SPierre Ossman case 3: /* MMC v3.1 - v3.3 */ 917ea239d9SPierre Ossman case 4: /* MMC v4 */ 927ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 937ea239d9SPierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 947ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 957ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 967ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 977ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 987ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 997ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 10051e7e8b6SBernie Thompson card->cid.prv = UNSTUFF_BITS(resp, 48, 8); 1017ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 32); 1027ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1037ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1047ea239d9SPierre Ossman break; 1057ea239d9SPierre Ossman 1067ea239d9SPierre Ossman default: 107a3c76eb9SGirish K S pr_err("%s: card has unknown MMCA version %d\n", 1087ea239d9SPierre Ossman mmc_hostname(card->host), card->csd.mmca_vsn); 109bd766312SPierre Ossman return -EINVAL; 1107ea239d9SPierre Ossman } 111bd766312SPierre Ossman 112bd766312SPierre Ossman return 0; 1137ea239d9SPierre Ossman } 1147ea239d9SPierre Ossman 115dfe86cbaSAdrian Hunter static void mmc_set_erase_size(struct mmc_card *card) 116dfe86cbaSAdrian Hunter { 117dfe86cbaSAdrian Hunter if (card->ext_csd.erase_group_def & 1) 118dfe86cbaSAdrian Hunter card->erase_size = card->ext_csd.hc_erase_size; 119dfe86cbaSAdrian Hunter else 120dfe86cbaSAdrian Hunter card->erase_size = card->csd.erase_size; 121dfe86cbaSAdrian Hunter 122dfe86cbaSAdrian Hunter mmc_init_erase(card); 123dfe86cbaSAdrian Hunter } 124dfe86cbaSAdrian Hunter 1257ea239d9SPierre Ossman /* 1267ea239d9SPierre Ossman * Given a 128-bit response, decode to our card CSD structure. 1277ea239d9SPierre Ossman */ 128bd766312SPierre Ossman static int mmc_decode_csd(struct mmc_card *card) 1297ea239d9SPierre Ossman { 1307ea239d9SPierre Ossman struct mmc_csd *csd = &card->csd; 131dfe86cbaSAdrian Hunter unsigned int e, m, a, b; 1327ea239d9SPierre Ossman u32 *resp = card->raw_csd; 1337ea239d9SPierre Ossman 1347ea239d9SPierre Ossman /* 1357ea239d9SPierre Ossman * We only understand CSD structure v1.1 and v1.2. 1367ea239d9SPierre Ossman * v1.2 has extra information in bits 15, 11 and 10. 1376da24b78SKyungmin Park * We also support eMMC v4.4 & v4.41. 1387ea239d9SPierre Ossman */ 1396da24b78SKyungmin Park csd->structure = UNSTUFF_BITS(resp, 126, 2); 1406da24b78SKyungmin Park if (csd->structure == 0) { 141a3c76eb9SGirish K S pr_err("%s: unrecognised CSD structure version %d\n", 1426da24b78SKyungmin Park mmc_hostname(card->host), csd->structure); 143bd766312SPierre Ossman return -EINVAL; 1447ea239d9SPierre Ossman } 1457ea239d9SPierre Ossman 1467ea239d9SPierre Ossman csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); 1477ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1487ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1497ea239d9SPierre Ossman csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; 1507ea239d9SPierre Ossman csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1517ea239d9SPierre Ossman 1527ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1537ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1547ea239d9SPierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1557ea239d9SPierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1567ea239d9SPierre Ossman 1577ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1587ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1597ea239d9SPierre Ossman csd->capacity = (1 + m) << (e + 2); 1607ea239d9SPierre Ossman 1617ea239d9SPierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1627ea239d9SPierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1637ea239d9SPierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1647ea239d9SPierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1653d705d14SSascha Hauer csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); 1667ea239d9SPierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1677ea239d9SPierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1687ea239d9SPierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 169bd766312SPierre Ossman 170dfe86cbaSAdrian Hunter if (csd->write_blkbits >= 9) { 171dfe86cbaSAdrian Hunter a = UNSTUFF_BITS(resp, 42, 5); 172dfe86cbaSAdrian Hunter b = UNSTUFF_BITS(resp, 37, 5); 173dfe86cbaSAdrian Hunter csd->erase_size = (a + 1) * (b + 1); 174dfe86cbaSAdrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 175dfe86cbaSAdrian Hunter } 176dfe86cbaSAdrian Hunter 177bd766312SPierre Ossman return 0; 1787ea239d9SPierre Ossman } 1797ea239d9SPierre Ossman 18096cf5f02SSeungwon Jeon static void mmc_select_card_type(struct mmc_card *card) 18196cf5f02SSeungwon Jeon { 18296cf5f02SSeungwon Jeon struct mmc_host *host = card->host; 1830a5b6438SSeungwon Jeon u8 card_type = card->ext_csd.raw_card_type; 1845f1a4dd0SLee Jones u32 caps = host->caps, caps2 = host->caps2; 185577fb131SSeungwon Jeon unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; 1862415c0efSSeungwon Jeon unsigned int avail_type = 0; 18796cf5f02SSeungwon Jeon 18896cf5f02SSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 1892415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_26) { 1902415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_26_MAX_DTR; 1912415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_26; 1922415c0efSSeungwon Jeon } 1932415c0efSSeungwon Jeon 1942415c0efSSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 1952415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_52) { 19696cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_52_MAX_DTR; 1972415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_52; 1982415c0efSSeungwon Jeon } 19996cf5f02SSeungwon Jeon 2002415c0efSSeungwon Jeon if (caps & MMC_CAP_1_8V_DDR && 2012415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { 20296cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2032415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; 2042415c0efSSeungwon Jeon } 20596cf5f02SSeungwon Jeon 2062415c0efSSeungwon Jeon if (caps & MMC_CAP_1_2V_DDR && 2072415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 2082415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2092415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; 2102415c0efSSeungwon Jeon } 2112415c0efSSeungwon Jeon 2122415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_8V_SDR && 2132415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { 214577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2152415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; 2162415c0efSSeungwon Jeon } 2172415c0efSSeungwon Jeon 2182415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_2V_SDR && 2192415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { 220577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2212415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; 2222415c0efSSeungwon Jeon } 22396cf5f02SSeungwon Jeon 2240a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_8V && 2250a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { 2260a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2270a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; 2280a5b6438SSeungwon Jeon } 2290a5b6438SSeungwon Jeon 2300a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_2V && 2310a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { 2320a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2330a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; 2340a5b6438SSeungwon Jeon } 2350a5b6438SSeungwon Jeon 23696cf5f02SSeungwon Jeon card->ext_csd.hs_max_dtr = hs_max_dtr; 237577fb131SSeungwon Jeon card->ext_csd.hs200_max_dtr = hs200_max_dtr; 2382415c0efSSeungwon Jeon card->mmc_avail_type = avail_type; 23996cf5f02SSeungwon Jeon } 24096cf5f02SSeungwon Jeon 241b4493eeaSGrégory Soutadé static void mmc_manage_enhanced_area(struct mmc_card *card, u8 *ext_csd) 242b4493eeaSGrégory Soutadé { 243994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 244994324bbSGrégory Soutadé 245994324bbSGrégory Soutadé /* 246994324bbSGrégory Soutadé * Disable these attributes by default 247994324bbSGrégory Soutadé */ 248994324bbSGrégory Soutadé card->ext_csd.enhanced_area_offset = -EINVAL; 249994324bbSGrégory Soutadé card->ext_csd.enhanced_area_size = -EINVAL; 250b4493eeaSGrégory Soutadé 251b4493eeaSGrégory Soutadé /* 252b4493eeaSGrégory Soutadé * Enhanced area feature support -- check whether the eMMC 253b4493eeaSGrégory Soutadé * card has the Enhanced area enabled. If so, export enhanced 254b4493eeaSGrégory Soutadé * area offset and size to user by adding sysfs interface. 255b4493eeaSGrégory Soutadé */ 256b4493eeaSGrégory Soutadé if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 257b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 258994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed) { 259b4493eeaSGrégory Soutadé hc_erase_grp_sz = 260b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 261b4493eeaSGrégory Soutadé hc_wp_grp_sz = 262b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 263b4493eeaSGrégory Soutadé 264b4493eeaSGrégory Soutadé /* 265b4493eeaSGrégory Soutadé * calculate the enhanced data area offset, in bytes 266b4493eeaSGrégory Soutadé */ 267b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset = 268b4493eeaSGrégory Soutadé (ext_csd[139] << 24) + (ext_csd[138] << 16) + 269b4493eeaSGrégory Soutadé (ext_csd[137] << 8) + ext_csd[136]; 270b4493eeaSGrégory Soutadé if (mmc_card_blockaddr(card)) 271b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_offset <<= 9; 272b4493eeaSGrégory Soutadé /* 273b4493eeaSGrégory Soutadé * calculate the enhanced data area size, in kilobytes 274b4493eeaSGrégory Soutadé */ 275b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size = 276b4493eeaSGrégory Soutadé (ext_csd[142] << 16) + (ext_csd[141] << 8) + 277b4493eeaSGrégory Soutadé ext_csd[140]; 278b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size *= 279b4493eeaSGrégory Soutadé (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 280b4493eeaSGrégory Soutadé card->ext_csd.enhanced_area_size <<= 9; 281b4493eeaSGrégory Soutadé } else { 282994324bbSGrégory Soutadé pr_warn("%s: defines enhanced area without partition setting complete\n", 283994324bbSGrégory Soutadé mmc_hostname(card->host)); 284994324bbSGrégory Soutadé } 285b4493eeaSGrégory Soutadé } 286b4493eeaSGrégory Soutadé } 287b4493eeaSGrégory Soutadé 288b4493eeaSGrégory Soutadé static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd) 289b4493eeaSGrégory Soutadé { 290b4493eeaSGrégory Soutadé int idx; 291994324bbSGrégory Soutadé u8 hc_erase_grp_sz, hc_wp_grp_sz; 292994324bbSGrégory Soutadé unsigned int part_size; 293b4493eeaSGrégory Soutadé 294b4493eeaSGrégory Soutadé /* 295b4493eeaSGrégory Soutadé * General purpose partition feature support -- 296b4493eeaSGrégory Soutadé * If ext_csd has the size of general purpose partitions, 297b4493eeaSGrégory Soutadé * set size, part_cfg, partition name in mmc_part. 298b4493eeaSGrégory Soutadé */ 299b4493eeaSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 300b4493eeaSGrégory Soutadé EXT_CSD_PART_SUPPORT_PART_EN) { 301b4493eeaSGrégory Soutadé hc_erase_grp_sz = 302b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 303b4493eeaSGrégory Soutadé hc_wp_grp_sz = 304b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 305b4493eeaSGrégory Soutadé 306b4493eeaSGrégory Soutadé for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 307b4493eeaSGrégory Soutadé if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 308b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 309b4493eeaSGrégory Soutadé !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 310b4493eeaSGrégory Soutadé continue; 311994324bbSGrégory Soutadé if (card->ext_csd.partition_setting_completed == 0) { 312994324bbSGrégory Soutadé pr_warn("%s: has partition size defined without partition complete\n", 313994324bbSGrégory Soutadé mmc_hostname(card->host)); 314994324bbSGrégory Soutadé break; 315994324bbSGrégory Soutadé } 316b4493eeaSGrégory Soutadé part_size = 317b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 318b4493eeaSGrégory Soutadé << 16) + 319b4493eeaSGrégory Soutadé (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 320b4493eeaSGrégory Soutadé << 8) + 321b4493eeaSGrégory Soutadé ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 322b4493eeaSGrégory Soutadé part_size *= (size_t)(hc_erase_grp_sz * 323b4493eeaSGrégory Soutadé hc_wp_grp_sz); 324b4493eeaSGrégory Soutadé mmc_part_add(card, part_size << 19, 325b4493eeaSGrégory Soutadé EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 326b4493eeaSGrégory Soutadé "gp%d", idx, false, 327b4493eeaSGrégory Soutadé MMC_BLK_DATA_AREA_GP); 328b4493eeaSGrégory Soutadé } 329b4493eeaSGrégory Soutadé } 330b4493eeaSGrégory Soutadé } 331b4493eeaSGrégory Soutadé 33208ee80ccSPhilip Rakity /* 33308ee80ccSPhilip Rakity * Decode extended CSD. 33408ee80ccSPhilip Rakity */ 335076ec38aSUlf Hansson static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd) 33608ee80ccSPhilip Rakity { 337e0c368d5SNamjae Jeon int err = 0, idx; 338e0c368d5SNamjae Jeon unsigned int part_size; 33908ee80ccSPhilip Rakity 3406da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 341f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 3426da24b78SKyungmin Park if (card->csd.structure == 3) { 343f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 344a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 3458fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 346f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 3476da24b78SKyungmin Park err = -EINVAL; 3486da24b78SKyungmin Park goto out; 3496da24b78SKyungmin Park } 3506da24b78SKyungmin Park } 3516da24b78SKyungmin Park 35203a59437SRomain Izard /* 35303a59437SRomain Izard * The EXT_CSD format is meant to be forward compatible. As long 35403a59437SRomain Izard * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV 35503a59437SRomain Izard * are authorized, see JEDEC JESD84-B50 section B.8. 35603a59437SRomain Izard */ 3576da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 358d7604d76SPierre Ossman 359f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 360f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 361f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 362f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 363b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 3647ea239d9SPierre Ossman card->ext_csd.sectors = 3657ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 3667ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 3677ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 3687ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 369fc8a0985SHanumath Prasad 370fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 371fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 3727ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 373d7604d76SPierre Ossman } 37496cf5f02SSeungwon Jeon 375f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 37696cf5f02SSeungwon Jeon mmc_select_card_type(card); 3777ea239d9SPierre Ossman 378f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 379f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 380f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 381f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 382f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 383b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 384b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 385371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 386371a689fSAndrei Warkentin 387371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 388371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 389b1ebe384SJarkko Lavinen 390b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 391b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 392b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 393b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 394dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 395dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 396dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 397dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 398dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 399dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 400f4c5522bSAndrei Warkentin 401f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 402371a689fSAndrei Warkentin 403371a689fSAndrei Warkentin /* 404371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 405371a689fSAndrei Warkentin * multiples of 128K. 406371a689fSAndrei Warkentin */ 407e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 408e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 409e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 410e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 411e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 412add710eaSJohan Rudholm "boot%d", idx, true, 413add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 414e0c368d5SNamjae Jeon } 415e0c368d5SNamjae Jeon } 416b1ebe384SJarkko Lavinen } 417b1ebe384SJarkko Lavinen 418f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 419dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 420f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 421f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 422f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 423f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 424f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 425f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 426f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 427f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 428836dc2feSPhilip Rakity card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 429dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 43069803d4fSGrégory Soutadé if (ext_csd[EXT_CSD_PARTITION_SETTING_COMPLETED] & 43169803d4fSGrégory Soutadé EXT_CSD_PART_SETTING_COMPLETED) 43269803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 1; 43369803d4fSGrégory Soutadé else 43469803d4fSGrégory Soutadé card->ext_csd.partition_setting_completed = 0; 43569803d4fSGrégory Soutadé 436b4493eeaSGrégory Soutadé mmc_manage_enhanced_area(card, ext_csd); 437709de99dSChuanxiao Dong 438b4493eeaSGrégory Soutadé mmc_manage_gp_partitions(card, ext_csd); 439e0c368d5SNamjae Jeon 440dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 441dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 442dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 443dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 444dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 445dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 446dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 447dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 448add710eaSJohan Rudholm 449add710eaSJohan Rudholm /* 450add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 451add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 452add710eaSJohan Rudholm * take into account the value of boot_locked below. 453add710eaSJohan Rudholm */ 454add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 455add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 45660443712SFredrik Soderstedt 45760443712SFredrik Soderstedt /* Save power class values */ 45860443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_195 = 45960443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_195]; 46060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_195 = 46160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_195]; 46260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_360 = 46360443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_360]; 46460443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_360 = 46560443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_360]; 46660443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_195 = 46760443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_195]; 46860443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_360 = 46960443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_360]; 47060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_195 = 47160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; 47260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_360 = 47360443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; 4740a5b6438SSeungwon Jeon card->ext_csd.raw_pwr_cl_ddr_200_360 = 4750a5b6438SSeungwon Jeon ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; 476dfe86cbaSAdrian Hunter } 477dfe86cbaSAdrian Hunter 478b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 4797c4f10acSRomain Izard /* Adjust production date as per JEDEC JESD84-B451 */ 4807c4f10acSRomain Izard if (card->cid.year < 2010) 4817c4f10acSRomain Izard card->cid.year += 16; 4827c4f10acSRomain Izard 483950d56acSJaehoon Chung /* check whether the eMMC card supports BKOPS */ 484950d56acSJaehoon Chung if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { 485950d56acSJaehoon Chung card->ext_csd.bkops = 1; 486950d56acSJaehoon Chung card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN]; 487950d56acSJaehoon Chung card->ext_csd.raw_bkops_status = 488950d56acSJaehoon Chung ext_csd[EXT_CSD_BKOPS_STATUS]; 489950d56acSJaehoon Chung if (!card->ext_csd.bkops_en) 490950d56acSJaehoon Chung pr_info("%s: BKOPS_EN bit is not set\n", 491950d56acSJaehoon Chung mmc_hostname(card->host)); 492950d56acSJaehoon Chung } 493950d56acSJaehoon Chung 494eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 495eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { 496eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 497eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 498eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 499eb0d8f13SJaehoon Chung else 500eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 501eb0d8f13SJaehoon Chung /* 502eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 503eb0d8f13SJaehoon Chung * a command interrupted by HPI 504eb0d8f13SJaehoon Chung */ 505eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 506eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 507eb0d8f13SJaehoon Chung } 508eb0d8f13SJaehoon Chung 509f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 510b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 511090d25feSLoic Pallardy 512090d25feSLoic Pallardy /* 513090d25feSLoic Pallardy * RPMB regions are defined in multiples of 128K. 514090d25feSLoic Pallardy */ 515090d25feSLoic Pallardy card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; 516d0123ccaSBalaji T K if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { 517090d25feSLoic Pallardy mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, 518090d25feSLoic Pallardy EXT_CSD_PART_CONFIG_ACC_RPMB, 519090d25feSLoic Pallardy "rpmb", 0, false, 520090d25feSLoic Pallardy MMC_BLK_DATA_AREA_RPMB); 521090d25feSLoic Pallardy } 522b2499518SAdrian Hunter } 523f4c5522bSAndrei Warkentin 5245238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 525dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 526dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 527dfe86cbaSAdrian Hunter else 528dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 529dfe86cbaSAdrian Hunter 530336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 531bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 532336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 533336c716aSSeungwon Jeon 534b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 535b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 536bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 537bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 538b23cf0bdSSeungwon Jeon 539881d1c25SSeungwon Jeon card->ext_csd.cache_size = 540881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 541881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 542881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 543881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 5444265900eSSaugata Das 5454265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 5464265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 5474265900eSSaugata Das else 5484265900eSSaugata Das card->ext_csd.data_sector_size = 512; 5494265900eSSaugata Das 5504265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 5514265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 5524265900eSSaugata Das card->ext_csd.data_tag_unit_size = 5534265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 5544265900eSSaugata Das (card->ext_csd.data_sector_size); 5554265900eSSaugata Das } else { 5564265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 5574265900eSSaugata Das } 558abd9ac14SSeungwon Jeon 559abd9ac14SSeungwon Jeon card->ext_csd.max_packed_writes = 560abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_WRITES]; 561abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads = 562abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_READS]; 563a5075eb9SSaugata Das } else { 564a5075eb9SSaugata Das card->ext_csd.data_sector_size = 512; 565336c716aSSeungwon Jeon } 566881d1c25SSeungwon Jeon 5670f762426SGwendal Grignou /* eMMC v5 or later */ 5680f762426SGwendal Grignou if (card->ext_csd.rev >= 7) { 5690f762426SGwendal Grignou memcpy(card->ext_csd.fwrev, &ext_csd[EXT_CSD_FIRMWARE_VERSION], 5700f762426SGwendal Grignou MMC_FIRMWARE_LEN); 5710f762426SGwendal Grignou card->ext_csd.ffu_capable = 5720f762426SGwendal Grignou (ext_csd[EXT_CSD_SUPPORTED_MODE] & 0x1) && 5730f762426SGwendal Grignou !(ext_csd[EXT_CSD_FW_CONFIG] & 0x1); 5740f762426SGwendal Grignou } 5757ea239d9SPierre Ossman out: 57608ee80ccSPhilip Rakity return err; 57708ee80ccSPhilip Rakity } 5787ea239d9SPierre Ossman 579076ec38aSUlf Hansson static int mmc_read_ext_csd(struct mmc_card *card) 580076ec38aSUlf Hansson { 581c197787cSUlf Hansson u8 *ext_csd; 582076ec38aSUlf Hansson int err; 583076ec38aSUlf Hansson 584c197787cSUlf Hansson if (!mmc_can_ext_csd(card)) 585c197787cSUlf Hansson return 0; 586c197787cSUlf Hansson 587076ec38aSUlf Hansson err = mmc_get_ext_csd(card, &ext_csd); 588c197787cSUlf Hansson if (err) { 589c197787cSUlf Hansson /* If the host or the card can't do the switch, 590c197787cSUlf Hansson * fail more gracefully. */ 591c197787cSUlf Hansson if ((err != -EINVAL) 592c197787cSUlf Hansson && (err != -ENOSYS) 593c197787cSUlf Hansson && (err != -EFAULT)) 594076ec38aSUlf Hansson return err; 595076ec38aSUlf Hansson 596c197787cSUlf Hansson /* 597c197787cSUlf Hansson * High capacity cards should have this "magic" size 598c197787cSUlf Hansson * stored in their CSD. 599c197787cSUlf Hansson */ 600c197787cSUlf Hansson if (card->csd.capacity == (4096 * 512)) { 601c197787cSUlf Hansson pr_err("%s: unable to read EXT_CSD on a possible high capacity card. Card will be ignored.\n", 602c197787cSUlf Hansson mmc_hostname(card->host)); 603c197787cSUlf Hansson } else { 604c197787cSUlf Hansson pr_warn("%s: unable to read EXT_CSD, performance might suffer\n", 605c197787cSUlf Hansson mmc_hostname(card->host)); 606c197787cSUlf Hansson err = 0; 607c197787cSUlf Hansson } 608c197787cSUlf Hansson 609c197787cSUlf Hansson return err; 610c197787cSUlf Hansson } 611c197787cSUlf Hansson 612076ec38aSUlf Hansson err = mmc_decode_ext_csd(card, ext_csd); 613076ec38aSUlf Hansson kfree(ext_csd); 614076ec38aSUlf Hansson return err; 615076ec38aSUlf Hansson } 616076ec38aSUlf Hansson 617f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 61808ee80ccSPhilip Rakity { 61908ee80ccSPhilip Rakity u8 *bw_ext_csd; 62008ee80ccSPhilip Rakity int err; 62108ee80ccSPhilip Rakity 622f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 623f39b2dd9SPhilip Rakity return 0; 62408ee80ccSPhilip Rakity 625f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 626c197787cSUlf Hansson if (err) 627c197787cSUlf Hansson return err; 62808ee80ccSPhilip Rakity 62908ee80ccSPhilip Rakity /* only compare read only fields */ 630dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 63108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 632f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 63308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 634f39b2dd9SPhilip Rakity (card->ext_csd.rev == 63508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 636f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 63708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 638f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 63908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 640f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 64108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 642f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 64308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 644f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 64508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 646f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 64708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 648f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 64908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 650f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 65108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 652f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 65308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 654f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 65508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 656f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 657f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 658f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 659f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 660f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 661f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 662f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 66360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && 66460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_195 == 66560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && 66660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_195 == 66760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && 66860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_360 == 66960443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && 67060443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_360 == 67160443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && 67260443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_195 == 67360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && 67460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_360 == 67560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && 67660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_195 == 67760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && 67860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_360 == 6790a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && 6800a5b6438SSeungwon Jeon (card->ext_csd.raw_pwr_cl_ddr_200_360 == 6810a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); 6820a5b6438SSeungwon Jeon 68308ee80ccSPhilip Rakity if (err) 68408ee80ccSPhilip Rakity err = -EINVAL; 68508ee80ccSPhilip Rakity 68600b41b58SUlf Hansson kfree(bw_ext_csd); 6877ea239d9SPierre Ossman return err; 6887ea239d9SPierre Ossman } 6897ea239d9SPierre Ossman 69051ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 69151ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 69251ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 69351ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 69451ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 695dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 696dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 6970f762426SGwendal Grignou MMC_DEV_ATTR(ffu_capable, "%d\n", card->ext_csd.ffu_capable); 69851ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 69951ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 70051ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 70151ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 70251e7e8b6SBernie Thompson MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); 70351ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 704709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 705709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 706709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 707188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 708188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 70951ec92e2SPierre Ossman 7100f762426SGwendal Grignou static ssize_t mmc_fwrev_show(struct device *dev, 7110f762426SGwendal Grignou struct device_attribute *attr, 7120f762426SGwendal Grignou char *buf) 7130f762426SGwendal Grignou { 7140f762426SGwendal Grignou struct mmc_card *card = mmc_dev_to_card(dev); 7150f762426SGwendal Grignou 7160f762426SGwendal Grignou if (card->ext_csd.rev < 7) { 7170f762426SGwendal Grignou return sprintf(buf, "0x%x\n", card->cid.fwrev); 7180f762426SGwendal Grignou } else { 7190f762426SGwendal Grignou return sprintf(buf, "0x%*phN\n", MMC_FIRMWARE_LEN, 7200f762426SGwendal Grignou card->ext_csd.fwrev); 7210f762426SGwendal Grignou } 7220f762426SGwendal Grignou } 7230f762426SGwendal Grignou 7240f762426SGwendal Grignou static DEVICE_ATTR(fwrev, S_IRUGO, mmc_fwrev_show, NULL); 7250f762426SGwendal Grignou 72651ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 72751ec92e2SPierre Ossman &dev_attr_cid.attr, 72851ec92e2SPierre Ossman &dev_attr_csd.attr, 72951ec92e2SPierre Ossman &dev_attr_date.attr, 730dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 731dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 73251ec92e2SPierre Ossman &dev_attr_fwrev.attr, 7330f762426SGwendal Grignou &dev_attr_ffu_capable.attr, 73451ec92e2SPierre Ossman &dev_attr_hwrev.attr, 73551ec92e2SPierre Ossman &dev_attr_manfid.attr, 73651ec92e2SPierre Ossman &dev_attr_name.attr, 73751ec92e2SPierre Ossman &dev_attr_oemid.attr, 73851e7e8b6SBernie Thompson &dev_attr_prv.attr, 73951ec92e2SPierre Ossman &dev_attr_serial.attr, 740709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 741709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 742188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 743188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 74451ec92e2SPierre Ossman NULL, 74551ec92e2SPierre Ossman }; 746d1e58212SAxel Lin ATTRIBUTE_GROUPS(mmc_std); 74751ec92e2SPierre Ossman 74851ec92e2SPierre Ossman static struct device_type mmc_type = { 749d1e58212SAxel Lin .groups = mmc_std_groups, 75051ec92e2SPierre Ossman }; 75151ec92e2SPierre Ossman 7527ea239d9SPierre Ossman /* 753b87d8dbfSGirish K S * Select the PowerClass for the current bus width 754b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 755b87d8dbfSGirish K S * extended CSD register, select it by executing the 756b87d8dbfSGirish K S * mmc_switch command. 757b87d8dbfSGirish K S */ 7582385049dSSeungwon Jeon static int __mmc_select_powerclass(struct mmc_card *card, 75960443712SFredrik Soderstedt unsigned int bus_width) 760b87d8dbfSGirish K S { 7612385049dSSeungwon Jeon struct mmc_host *host = card->host; 7622385049dSSeungwon Jeon struct mmc_ext_csd *ext_csd = &card->ext_csd; 76360443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 7642385049dSSeungwon Jeon int err = 0; 765b87d8dbfSGirish K S 766b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 767b87d8dbfSGirish K S case MMC_VDD_165_195: 7682385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 7692385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_195; 7702385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 77160443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 7722385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_195 : 7732385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_195; 7742385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 7752385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_200_195; 776b87d8dbfSGirish K S break; 77793fc5a47SSubhash Jadavani case MMC_VDD_27_28: 77893fc5a47SSubhash Jadavani case MMC_VDD_28_29: 77993fc5a47SSubhash Jadavani case MMC_VDD_29_30: 78093fc5a47SSubhash Jadavani case MMC_VDD_30_31: 78193fc5a47SSubhash Jadavani case MMC_VDD_31_32: 782b87d8dbfSGirish K S case MMC_VDD_32_33: 783b87d8dbfSGirish K S case MMC_VDD_33_34: 784b87d8dbfSGirish K S case MMC_VDD_34_35: 785b87d8dbfSGirish K S case MMC_VDD_35_36: 7862385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 7872385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_360; 7882385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 78960443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 7902385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_360 : 7912385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_360; 7922385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 7930a5b6438SSeungwon Jeon pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? 7940a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_ddr_200_360 : 7950a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_200_360; 796b87d8dbfSGirish K S break; 797b87d8dbfSGirish K S default: 7986606110dSJoe Perches pr_warn("%s: Voltage range not supported for power class\n", 7996606110dSJoe Perches mmc_hostname(host)); 800b87d8dbfSGirish K S return -EINVAL; 801b87d8dbfSGirish K S } 802b87d8dbfSGirish K S 803b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 804b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 805b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 806b87d8dbfSGirish K S else 807b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 808b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 809b87d8dbfSGirish K S 810b87d8dbfSGirish K S /* If the power class is different from the default value */ 811b87d8dbfSGirish K S if (pwrclass_val > 0) { 812b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 813b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 814b87d8dbfSGirish K S pwrclass_val, 81571fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 816b87d8dbfSGirish K S } 817b87d8dbfSGirish K S 818b87d8dbfSGirish K S return err; 819b87d8dbfSGirish K S } 820b87d8dbfSGirish K S 8212385049dSSeungwon Jeon static int mmc_select_powerclass(struct mmc_card *card) 8222385049dSSeungwon Jeon { 8232385049dSSeungwon Jeon struct mmc_host *host = card->host; 8242385049dSSeungwon Jeon u32 bus_width, ext_csd_bits; 8252385049dSSeungwon Jeon int err, ddr; 8262385049dSSeungwon Jeon 8272385049dSSeungwon Jeon /* Power class selection is supported for versions >= 4.0 */ 828148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 8292385049dSSeungwon Jeon return 0; 8302385049dSSeungwon Jeon 8312385049dSSeungwon Jeon bus_width = host->ios.bus_width; 8322385049dSSeungwon Jeon /* Power class values are defined only for 4/8 bit bus */ 8332385049dSSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 8342385049dSSeungwon Jeon return 0; 8352385049dSSeungwon Jeon 8362385049dSSeungwon Jeon ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; 8372385049dSSeungwon Jeon if (ddr) 8382385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 8392385049dSSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 8402385049dSSeungwon Jeon else 8412385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 8422385049dSSeungwon Jeon EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 8432385049dSSeungwon Jeon 8442385049dSSeungwon Jeon err = __mmc_select_powerclass(card, ext_csd_bits); 8452385049dSSeungwon Jeon if (err) 8462385049dSSeungwon Jeon pr_warn("%s: power class selection to bus width %d ddr %d failed\n", 8472385049dSSeungwon Jeon mmc_hostname(host), 1 << bus_width, ddr); 8482385049dSSeungwon Jeon 8492385049dSSeungwon Jeon return err; 8502385049dSSeungwon Jeon } 8512385049dSSeungwon Jeon 852b87d8dbfSGirish K S /* 853577fb131SSeungwon Jeon * Set the bus speed for the selected speed mode. 854a4924c71SGirish K S */ 855577fb131SSeungwon Jeon static void mmc_set_bus_speed(struct mmc_card *card) 856a4924c71SGirish K S { 857577fb131SSeungwon Jeon unsigned int max_dtr = (unsigned int)-1; 858577fb131SSeungwon Jeon 8590a5b6438SSeungwon Jeon if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && 8600a5b6438SSeungwon Jeon max_dtr > card->ext_csd.hs200_max_dtr) 861577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs200_max_dtr; 862577fb131SSeungwon Jeon else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) 863577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs_max_dtr; 864577fb131SSeungwon Jeon else if (max_dtr > card->csd.max_dtr) 865577fb131SSeungwon Jeon max_dtr = card->csd.max_dtr; 866577fb131SSeungwon Jeon 867577fb131SSeungwon Jeon mmc_set_clock(card->host, max_dtr); 868577fb131SSeungwon Jeon } 869577fb131SSeungwon Jeon 870577fb131SSeungwon Jeon /* 871577fb131SSeungwon Jeon * Select the bus width amoung 4-bit and 8-bit(SDR). 872577fb131SSeungwon Jeon * If the bus width is changed successfully, return the selected width value. 873577fb131SSeungwon Jeon * Zero is returned instead of error value if the wide width is not supported. 874577fb131SSeungwon Jeon */ 875577fb131SSeungwon Jeon static int mmc_select_bus_width(struct mmc_card *card) 876577fb131SSeungwon Jeon { 877a4924c71SGirish K S static unsigned ext_csd_bits[] = { 878a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 879577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH_4, 880a4924c71SGirish K S }; 881a4924c71SGirish K S static unsigned bus_widths[] = { 882a4924c71SGirish K S MMC_BUS_WIDTH_8, 883577fb131SSeungwon Jeon MMC_BUS_WIDTH_4, 884a4924c71SGirish K S }; 885577fb131SSeungwon Jeon struct mmc_host *host = card->host; 886577fb131SSeungwon Jeon unsigned idx, bus_width = 0; 887577fb131SSeungwon Jeon int err = 0; 888a4924c71SGirish K S 8891c2d26e3SAlexandre Belloni if (!mmc_can_ext_csd(card) || 890577fb131SSeungwon Jeon !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) 891577fb131SSeungwon Jeon return 0; 892a4924c71SGirish K S 893577fb131SSeungwon Jeon idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; 894a4924c71SGirish K S 895a4924c71SGirish K S /* 896a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 897a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 898a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 899a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 900a4924c71SGirish K S */ 901577fb131SSeungwon Jeon for (; idx < ARRAY_SIZE(bus_widths); idx++) { 902a4924c71SGirish K S /* 903a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 904a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 905a4924c71SGirish K S * mmc switch command returns error then switch to 906a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 907a4924c71SGirish K S * bus width on the host. 908a4924c71SGirish K S */ 909a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 910a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 911a4924c71SGirish K S ext_csd_bits[idx], 912a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 913a4924c71SGirish K S if (err) 914a4924c71SGirish K S continue; 915a4924c71SGirish K S 916577fb131SSeungwon Jeon bus_width = bus_widths[idx]; 917577fb131SSeungwon Jeon mmc_set_bus_width(host, bus_width); 918a4924c71SGirish K S 919577fb131SSeungwon Jeon /* 920577fb131SSeungwon Jeon * If controller can't handle bus width test, 921577fb131SSeungwon Jeon * compare ext_csd previously read in 1 bit mode 922577fb131SSeungwon Jeon * against ext_csd at new bus width 923577fb131SSeungwon Jeon */ 924a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 925577fb131SSeungwon Jeon err = mmc_compare_ext_csds(card, bus_width); 926a4924c71SGirish K S else 927577fb131SSeungwon Jeon err = mmc_bus_test(card, bus_width); 928577fb131SSeungwon Jeon 929577fb131SSeungwon Jeon if (!err) { 930577fb131SSeungwon Jeon err = bus_width; 931a4924c71SGirish K S break; 932577fb131SSeungwon Jeon } else { 933577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d failed\n", 934577fb131SSeungwon Jeon mmc_hostname(host), ext_csd_bits[idx]); 935577fb131SSeungwon Jeon } 936a4924c71SGirish K S } 937a4924c71SGirish K S 938577fb131SSeungwon Jeon return err; 939577fb131SSeungwon Jeon } 940577fb131SSeungwon Jeon 941577fb131SSeungwon Jeon /* 942577fb131SSeungwon Jeon * Switch to the high-speed mode 943577fb131SSeungwon Jeon */ 944577fb131SSeungwon Jeon static int mmc_select_hs(struct mmc_card *card) 945577fb131SSeungwon Jeon { 946577fb131SSeungwon Jeon int err; 947577fb131SSeungwon Jeon 9484509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 949577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 95057de31f6SUlf Hansson card->ext_csd.generic_cmd6_time, 95157de31f6SUlf Hansson true, true, true); 952577fb131SSeungwon Jeon if (!err) 953577fb131SSeungwon Jeon mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 954577fb131SSeungwon Jeon 955577fb131SSeungwon Jeon return err; 956577fb131SSeungwon Jeon } 957577fb131SSeungwon Jeon 958577fb131SSeungwon Jeon /* 959577fb131SSeungwon Jeon * Activate wide bus and DDR if supported. 960577fb131SSeungwon Jeon */ 961577fb131SSeungwon Jeon static int mmc_select_hs_ddr(struct mmc_card *card) 962577fb131SSeungwon Jeon { 963577fb131SSeungwon Jeon struct mmc_host *host = card->host; 964577fb131SSeungwon Jeon u32 bus_width, ext_csd_bits; 965577fb131SSeungwon Jeon int err = 0; 966577fb131SSeungwon Jeon 967577fb131SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) 968577fb131SSeungwon Jeon return 0; 969577fb131SSeungwon Jeon 970577fb131SSeungwon Jeon bus_width = host->ios.bus_width; 971577fb131SSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 972577fb131SSeungwon Jeon return 0; 973577fb131SSeungwon Jeon 974577fb131SSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 975577fb131SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 976577fb131SSeungwon Jeon 977577fb131SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 978577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH, 979577fb131SSeungwon Jeon ext_csd_bits, 980577fb131SSeungwon Jeon card->ext_csd.generic_cmd6_time); 981577fb131SSeungwon Jeon if (err) { 9824b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width %d ddr failed\n", 983577fb131SSeungwon Jeon mmc_hostname(host), 1 << bus_width); 984577fb131SSeungwon Jeon return err; 985577fb131SSeungwon Jeon } 986577fb131SSeungwon Jeon 987577fb131SSeungwon Jeon /* 988577fb131SSeungwon Jeon * eMMC cards can support 3.3V to 1.2V i/o (vccq) 989577fb131SSeungwon Jeon * signaling. 990577fb131SSeungwon Jeon * 991577fb131SSeungwon Jeon * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 992577fb131SSeungwon Jeon * 993577fb131SSeungwon Jeon * 1.8V vccq at 3.3V core voltage (vcc) is not required 994577fb131SSeungwon Jeon * in the JEDEC spec for DDR. 995577fb131SSeungwon Jeon * 996312449efSChuanxiao.Dong * Even (e)MMC card can support 3.3v to 1.2v vccq, but not all 997312449efSChuanxiao.Dong * host controller can support this, like some of the SDHCI 998312449efSChuanxiao.Dong * controller which connect to an eMMC device. Some of these 999312449efSChuanxiao.Dong * host controller still needs to use 1.8v vccq for supporting 1000312449efSChuanxiao.Dong * DDR mode. 1001312449efSChuanxiao.Dong * 1002312449efSChuanxiao.Dong * So the sequence will be: 1003312449efSChuanxiao.Dong * if (host and device can both support 1.2v IO) 1004312449efSChuanxiao.Dong * use 1.2v IO; 1005312449efSChuanxiao.Dong * else if (host and device can both support 1.8v IO) 1006312449efSChuanxiao.Dong * use 1.8v IO; 1007312449efSChuanxiao.Dong * so if host and device can only support 3.3v IO, this is the 1008312449efSChuanxiao.Dong * last choice. 1009577fb131SSeungwon Jeon * 1010577fb131SSeungwon Jeon * WARNING: eMMC rules are NOT the same as SD DDR 1011577fb131SSeungwon Jeon */ 1012312449efSChuanxiao.Dong err = -EINVAL; 1013312449efSChuanxiao.Dong if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) 1014312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1015577fb131SSeungwon Jeon 1016312449efSChuanxiao.Dong if (err && (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_8V)) 1017312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1018312449efSChuanxiao.Dong 1019312449efSChuanxiao.Dong /* make sure vccq is 3.3v after switching disaster */ 1020312449efSChuanxiao.Dong if (err) 1021312449efSChuanxiao.Dong err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); 1022312449efSChuanxiao.Dong 1023312449efSChuanxiao.Dong if (!err) 1024577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_DDR52); 1025577fb131SSeungwon Jeon 1026577fb131SSeungwon Jeon return err; 1027577fb131SSeungwon Jeon } 1028577fb131SSeungwon Jeon 10290a5b6438SSeungwon Jeon static int mmc_select_hs400(struct mmc_card *card) 10300a5b6438SSeungwon Jeon { 10310a5b6438SSeungwon Jeon struct mmc_host *host = card->host; 10320a5b6438SSeungwon Jeon int err = 0; 10330a5b6438SSeungwon Jeon 10340a5b6438SSeungwon Jeon /* 10350a5b6438SSeungwon Jeon * HS400 mode requires 8-bit bus width 10360a5b6438SSeungwon Jeon */ 10370a5b6438SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 10380a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8)) 10390a5b6438SSeungwon Jeon return 0; 10400a5b6438SSeungwon Jeon 10410a5b6438SSeungwon Jeon /* 10420a5b6438SSeungwon Jeon * Before switching to dual data rate operation for HS400, 10430a5b6438SSeungwon Jeon * it is required to convert from HS200 mode to HS mode. 10440a5b6438SSeungwon Jeon */ 10450a5b6438SSeungwon Jeon mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 10460a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 10470a5b6438SSeungwon Jeon 10480a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10490a5b6438SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 10500a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time, 10510a5b6438SSeungwon Jeon true, true, true); 10520a5b6438SSeungwon Jeon if (err) { 10534b75bffcSAndrew Gabbasov pr_err("%s: switch to high-speed from hs200 failed, err:%d\n", 10540a5b6438SSeungwon Jeon mmc_hostname(host), err); 10550a5b6438SSeungwon Jeon return err; 10560a5b6438SSeungwon Jeon } 10570a5b6438SSeungwon Jeon 10580a5b6438SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10590a5b6438SSeungwon Jeon EXT_CSD_BUS_WIDTH, 10600a5b6438SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8, 10610a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time); 10620a5b6438SSeungwon Jeon if (err) { 10634b75bffcSAndrew Gabbasov pr_err("%s: switch to bus width for hs400 failed, err:%d\n", 10640a5b6438SSeungwon Jeon mmc_hostname(host), err); 10650a5b6438SSeungwon Jeon return err; 10660a5b6438SSeungwon Jeon } 10670a5b6438SSeungwon Jeon 10680a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10690a5b6438SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS400, 10700a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time, 10710a5b6438SSeungwon Jeon true, true, true); 10720a5b6438SSeungwon Jeon if (err) { 10734b75bffcSAndrew Gabbasov pr_err("%s: switch to hs400 failed, err:%d\n", 10740a5b6438SSeungwon Jeon mmc_hostname(host), err); 10750a5b6438SSeungwon Jeon return err; 10760a5b6438SSeungwon Jeon } 10770a5b6438SSeungwon Jeon 10780a5b6438SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS400); 10790a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 10800a5b6438SSeungwon Jeon 10810a5b6438SSeungwon Jeon return 0; 10820a5b6438SSeungwon Jeon } 10830a5b6438SSeungwon Jeon 1084577fb131SSeungwon Jeon /* 1085577fb131SSeungwon Jeon * For device supporting HS200 mode, the following sequence 1086577fb131SSeungwon Jeon * should be done before executing the tuning process. 1087577fb131SSeungwon Jeon * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) 1088577fb131SSeungwon Jeon * 2. switch to HS200 mode 1089577fb131SSeungwon Jeon * 3. set the clock to > 52Mhz and <=200MHz 1090577fb131SSeungwon Jeon */ 1091577fb131SSeungwon Jeon static int mmc_select_hs200(struct mmc_card *card) 1092577fb131SSeungwon Jeon { 1093577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1094577fb131SSeungwon Jeon int err = -EINVAL; 1095577fb131SSeungwon Jeon 1096577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) 1097577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1098577fb131SSeungwon Jeon 1099577fb131SSeungwon Jeon if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) 1100577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1101577fb131SSeungwon Jeon 1102577fb131SSeungwon Jeon /* If fails try again during next card power cycle */ 1103577fb131SSeungwon Jeon if (err) 1104577fb131SSeungwon Jeon goto err; 1105577fb131SSeungwon Jeon 1106577fb131SSeungwon Jeon /* 1107577fb131SSeungwon Jeon * Set the bus width(4 or 8) with host's support and 1108577fb131SSeungwon Jeon * switch to HS200 mode if bus width is set successfully. 1109577fb131SSeungwon Jeon */ 1110577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 1111577fb131SSeungwon Jeon if (!IS_ERR_VALUE(err)) { 1112577fb131SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1113577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS200, 1114577fb131SSeungwon Jeon card->ext_csd.generic_cmd6_time, 1115577fb131SSeungwon Jeon true, true, true); 1116577fb131SSeungwon Jeon if (!err) 1117577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS200); 1118577fb131SSeungwon Jeon } 1119a4924c71SGirish K S err: 1120a4924c71SGirish K S return err; 1121a4924c71SGirish K S } 1122a4924c71SGirish K S 1123a4924c71SGirish K S /* 1124577fb131SSeungwon Jeon * Activate High Speed or HS200 mode if supported. 1125577fb131SSeungwon Jeon */ 1126577fb131SSeungwon Jeon static int mmc_select_timing(struct mmc_card *card) 1127577fb131SSeungwon Jeon { 1128577fb131SSeungwon Jeon int err = 0; 1129577fb131SSeungwon Jeon 1130148bcab2SUlf Hansson if (!mmc_can_ext_csd(card)) 1131577fb131SSeungwon Jeon goto bus_speed; 1132577fb131SSeungwon Jeon 1133577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) 1134577fb131SSeungwon Jeon err = mmc_select_hs200(card); 1135577fb131SSeungwon Jeon else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) 1136577fb131SSeungwon Jeon err = mmc_select_hs(card); 1137577fb131SSeungwon Jeon 1138577fb131SSeungwon Jeon if (err && err != -EBADMSG) 1139577fb131SSeungwon Jeon return err; 1140577fb131SSeungwon Jeon 1141577fb131SSeungwon Jeon if (err) { 1142577fb131SSeungwon Jeon pr_warn("%s: switch to %s failed\n", 1143577fb131SSeungwon Jeon mmc_card_hs(card) ? "high-speed" : 1144577fb131SSeungwon Jeon (mmc_card_hs200(card) ? "hs200" : ""), 1145577fb131SSeungwon Jeon mmc_hostname(card->host)); 1146577fb131SSeungwon Jeon err = 0; 1147577fb131SSeungwon Jeon } 1148577fb131SSeungwon Jeon 1149577fb131SSeungwon Jeon bus_speed: 1150577fb131SSeungwon Jeon /* 1151577fb131SSeungwon Jeon * Set the bus speed to the selected bus timing. 1152577fb131SSeungwon Jeon * If timing is not selected, backward compatible is the default. 1153577fb131SSeungwon Jeon */ 1154577fb131SSeungwon Jeon mmc_set_bus_speed(card); 1155577fb131SSeungwon Jeon return err; 1156577fb131SSeungwon Jeon } 1157577fb131SSeungwon Jeon 1158577fb131SSeungwon Jeon /* 1159577fb131SSeungwon Jeon * Execute tuning sequence to seek the proper bus operating 11600a5b6438SSeungwon Jeon * conditions for HS200 and HS400, which sends CMD21 to the device. 1161577fb131SSeungwon Jeon */ 1162577fb131SSeungwon Jeon static int mmc_hs200_tuning(struct mmc_card *card) 1163577fb131SSeungwon Jeon { 1164577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1165577fb131SSeungwon Jeon int err = 0; 1166577fb131SSeungwon Jeon 11670a5b6438SSeungwon Jeon /* 11680a5b6438SSeungwon Jeon * Timing should be adjusted to the HS400 target 11690a5b6438SSeungwon Jeon * operation frequency for tuning process 11700a5b6438SSeungwon Jeon */ 11710a5b6438SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 11720a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8) 11730a5b6438SSeungwon Jeon if (host->ops->prepare_hs400_tuning) 11740a5b6438SSeungwon Jeon host->ops->prepare_hs400_tuning(host, &host->ios); 11750a5b6438SSeungwon Jeon 1176577fb131SSeungwon Jeon if (host->ops->execute_tuning) { 1177577fb131SSeungwon Jeon mmc_host_clk_hold(host); 1178577fb131SSeungwon Jeon err = host->ops->execute_tuning(host, 1179577fb131SSeungwon Jeon MMC_SEND_TUNING_BLOCK_HS200); 1180577fb131SSeungwon Jeon mmc_host_clk_release(host); 1181577fb131SSeungwon Jeon 1182577fb131SSeungwon Jeon if (err) 11834b75bffcSAndrew Gabbasov pr_err("%s: tuning execution failed\n", 1184577fb131SSeungwon Jeon mmc_hostname(host)); 1185577fb131SSeungwon Jeon } 1186577fb131SSeungwon Jeon 1187577fb131SSeungwon Jeon return err; 1188577fb131SSeungwon Jeon } 1189577fb131SSeungwon Jeon 1190577fb131SSeungwon Jeon /* 11916abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 11926abaa0c9SPierre Ossman * 11938769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 11946abaa0c9SPierre Ossman * we're trying to reinitialise. 11957ea239d9SPierre Ossman */ 11968c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 11976abaa0c9SPierre Ossman struct mmc_card *oldcard) 11987ea239d9SPierre Ossman { 11997ea239d9SPierre Ossman struct mmc_card *card; 1200577fb131SSeungwon Jeon int err; 12017ea239d9SPierre Ossman u32 cid[4]; 1202b676f039SPhilip Rakity u32 rocr; 12037ea239d9SPierre Ossman 12047ea239d9SPierre Ossman BUG_ON(!host); 1205d84075c8SPierre Ossman WARN_ON(!host->claimed); 12067ea239d9SPierre Ossman 120744669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 120844669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 120944669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 121044669034SStefan Nilsson XK 12117ea239d9SPierre Ossman /* 12127ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 12137ea239d9SPierre Ossman * need to tell some cards to go back to the idle 12147ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 12157ea239d9SPierre Ossman * respond. 1216c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 12177ea239d9SPierre Ossman */ 12187ea239d9SPierre Ossman mmc_go_idle(host); 12197ea239d9SPierre Ossman 12207ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 1221b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 122217b0429dSPierre Ossman if (err) 12236abaa0c9SPierre Ossman goto err; 12247ea239d9SPierre Ossman 12257ea239d9SPierre Ossman /* 1226af517150SDavid Brownell * For SPI, enable CRC as appropriate. 1227af517150SDavid Brownell */ 1228af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1229af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 1230af517150SDavid Brownell if (err) 1231af517150SDavid Brownell goto err; 1232af517150SDavid Brownell } 1233af517150SDavid Brownell 1234af517150SDavid Brownell /* 12357ea239d9SPierre Ossman * Fetch CID from card. 12367ea239d9SPierre Ossman */ 1237af517150SDavid Brownell if (mmc_host_is_spi(host)) 1238af517150SDavid Brownell err = mmc_send_cid(host, cid); 1239af517150SDavid Brownell else 12407ea239d9SPierre Ossman err = mmc_all_send_cid(host, cid); 124117b0429dSPierre Ossman if (err) 12427ea239d9SPierre Ossman goto err; 12437ea239d9SPierre Ossman 12446abaa0c9SPierre Ossman if (oldcard) { 1245adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 1246adf66a0dSPierre Ossman err = -ENOENT; 12476abaa0c9SPierre Ossman goto err; 1248adf66a0dSPierre Ossman } 12496abaa0c9SPierre Ossman 12506abaa0c9SPierre Ossman card = oldcard; 12516abaa0c9SPierre Ossman } else { 12527ea239d9SPierre Ossman /* 12537ea239d9SPierre Ossman * Allocate card structure. 12547ea239d9SPierre Ossman */ 125551ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 1256adf66a0dSPierre Ossman if (IS_ERR(card)) { 1257adf66a0dSPierre Ossman err = PTR_ERR(card); 12587ea239d9SPierre Ossman goto err; 1259adf66a0dSPierre Ossman } 12607ea239d9SPierre Ossman 126169041150SUlf Hansson card->ocr = ocr; 12627ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 12637ea239d9SPierre Ossman card->rca = 1; 12647ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 12656abaa0c9SPierre Ossman } 12667ea239d9SPierre Ossman 12677ea239d9SPierre Ossman /* 1268eac86321SDoug Anderson * Call the optional HC's init_card function to handle quirks. 1269eac86321SDoug Anderson */ 1270eac86321SDoug Anderson if (host->ops->init_card) 1271eac86321SDoug Anderson host->ops->init_card(host, card); 1272eac86321SDoug Anderson 1273eac86321SDoug Anderson /* 1274af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 12757ea239d9SPierre Ossman */ 1276af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 12777ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 127817b0429dSPierre Ossman if (err) 12797ea239d9SPierre Ossman goto free_card; 12807ea239d9SPierre Ossman 12817ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 1282af517150SDavid Brownell } 12837ea239d9SPierre Ossman 12846abaa0c9SPierre Ossman if (!oldcard) { 12857ea239d9SPierre Ossman /* 12867ea239d9SPierre Ossman * Fetch CSD from card. 12877ea239d9SPierre Ossman */ 12887ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 128917b0429dSPierre Ossman if (err) 12907ea239d9SPierre Ossman goto free_card; 12917ea239d9SPierre Ossman 1292bd766312SPierre Ossman err = mmc_decode_csd(card); 1293adf66a0dSPierre Ossman if (err) 1294bd766312SPierre Ossman goto free_card; 1295bd766312SPierre Ossman err = mmc_decode_cid(card); 1296adf66a0dSPierre Ossman if (err) 1297bd766312SPierre Ossman goto free_card; 12986abaa0c9SPierre Ossman } 12997ea239d9SPierre Ossman 13007ea239d9SPierre Ossman /* 13013d705d14SSascha Hauer * handling only for cards supporting DSR and hosts requesting 13023d705d14SSascha Hauer * DSR configuration 13033d705d14SSascha Hauer */ 13043d705d14SSascha Hauer if (card->csd.dsr_imp && host->dsr_req) 13053d705d14SSascha Hauer mmc_set_dsr(host); 13063d705d14SSascha Hauer 13073d705d14SSascha Hauer /* 130889a73cf5SPierre Ossman * Select card, as all following commands rely on that. 13097ea239d9SPierre Ossman */ 1310af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 13117ea239d9SPierre Ossman err = mmc_select_card(card); 131217b0429dSPierre Ossman if (err) 13137ea239d9SPierre Ossman goto free_card; 1314af517150SDavid Brownell } 13157ea239d9SPierre Ossman 13166abaa0c9SPierre Ossman if (!oldcard) { 1317076ec38aSUlf Hansson /* Read extended CSD. */ 1318076ec38aSUlf Hansson err = mmc_read_ext_csd(card); 131917b0429dSPierre Ossman if (err) 13207ea239d9SPierre Ossman goto free_card; 1321b676f039SPhilip Rakity 1322b676f039SPhilip Rakity /* If doing byte addressing, check if required to do sector 1323b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 1324b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 1325b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 1326b676f039SPhilip Rakity */ 1327b676f039SPhilip Rakity if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) 1328b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 1329b676f039SPhilip Rakity 1330dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 1331dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 13326abaa0c9SPierre Ossman } 13337ea239d9SPierre Ossman 13347ea239d9SPierre Ossman /* 1335709de99dSChuanxiao Dong * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF 1336709de99dSChuanxiao Dong * bit. This bit will be lost every time after a reset or power off. 1337709de99dSChuanxiao Dong */ 133869803d4fSGrégory Soutadé if (card->ext_csd.partition_setting_completed || 133983bb24aaSAdrian Hunter (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { 1340709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1341b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1342b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1343709de99dSChuanxiao Dong 1344709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1345709de99dSChuanxiao Dong goto free_card; 1346709de99dSChuanxiao Dong 1347709de99dSChuanxiao Dong if (err) { 1348709de99dSChuanxiao Dong err = 0; 1349709de99dSChuanxiao Dong /* 1350709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1351709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1352709de99dSChuanxiao Dong * during next time reinit 1353709de99dSChuanxiao Dong */ 1354709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1355709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1356709de99dSChuanxiao Dong } else { 1357709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1358709de99dSChuanxiao Dong /* 1359709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1360709de99dSChuanxiao Dong * This will affect the erase size, so 1361709de99dSChuanxiao Dong * here need to reset erase size 1362709de99dSChuanxiao Dong */ 1363709de99dSChuanxiao Dong mmc_set_erase_size(card); 1364709de99dSChuanxiao Dong } 1365709de99dSChuanxiao Dong } 1366709de99dSChuanxiao Dong 1367709de99dSChuanxiao Dong /* 136841e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 136941e2a489SPhilip Rakity */ 1370371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1371371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1372371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1373371a689fSAndrei Warkentin card->ext_csd.part_config, 1374371a689fSAndrei Warkentin card->ext_csd.part_time); 1375371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1376371a689fSAndrei Warkentin goto free_card; 137741e2a489SPhilip Rakity } 137841e2a489SPhilip Rakity 137941e2a489SPhilip Rakity /* 138043235679SUlf Hansson * Enable power_off_notification byte in the ext_csd register 1381bec8726aSGirish K S */ 138243235679SUlf Hansson if (card->ext_csd.rev >= 6) { 1383bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1384bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1385bec8726aSGirish K S EXT_CSD_POWER_ON, 1386bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1387bec8726aSGirish K S if (err && err != -EBADMSG) 1388bec8726aSGirish K S goto free_card; 1389bec8726aSGirish K S 139096a85d54SGirish K S /* 139196a85d54SGirish K S * The err can be -EBADMSG or 0, 139296a85d54SGirish K S * so check for success and update the flag 139396a85d54SGirish K S */ 1394bec8726aSGirish K S if (!err) 1395e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 139696a85d54SGirish K S } 1397bec8726aSGirish K S 1398bec8726aSGirish K S /* 1399577fb131SSeungwon Jeon * Select timing interface 140089a73cf5SPierre Ossman */ 1401577fb131SSeungwon Jeon err = mmc_select_timing(card); 1402577fb131SSeungwon Jeon if (err) 140389a73cf5SPierre Ossman goto free_card; 140489a73cf5SPierre Ossman 1405a4924c71SGirish K S if (mmc_card_hs200(card)) { 1406577fb131SSeungwon Jeon err = mmc_hs200_tuning(card); 14074c4cb171SPhilip Rakity if (err) 14084b75bffcSAndrew Gabbasov goto free_card; 14090a5b6438SSeungwon Jeon 14100a5b6438SSeungwon Jeon err = mmc_select_hs400(card); 14110a5b6438SSeungwon Jeon if (err) 14124b75bffcSAndrew Gabbasov goto free_card; 1413577fb131SSeungwon Jeon } else if (mmc_card_hs(card)) { 1414577fb131SSeungwon Jeon /* Select the desired bus width optionally */ 1415577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 1416577fb131SSeungwon Jeon if (!IS_ERR_VALUE(err)) { 1417577fb131SSeungwon Jeon err = mmc_select_hs_ddr(card); 1418577fb131SSeungwon Jeon if (err) 14194b75bffcSAndrew Gabbasov goto free_card; 142089a73cf5SPierre Ossman } 1421ef0b27d4SAdrian Hunter } 142289a73cf5SPierre Ossman 1423881d1c25SSeungwon Jeon /* 14242385049dSSeungwon Jeon * Choose the power class with selected bus interface 14252385049dSSeungwon Jeon */ 14262385049dSSeungwon Jeon mmc_select_powerclass(card); 14272385049dSSeungwon Jeon 14282385049dSSeungwon Jeon /* 142952d0974eSSubhash Jadavani * Enable HPI feature (if supported) 143052d0974eSSubhash Jadavani */ 143152d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 143252d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 143352d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 143452d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 143552d0974eSSubhash Jadavani if (err && err != -EBADMSG) 143652d0974eSSubhash Jadavani goto free_card; 143752d0974eSSubhash Jadavani if (err) { 14386606110dSJoe Perches pr_warn("%s: Enabling HPI failed\n", 143952d0974eSSubhash Jadavani mmc_hostname(card->host)); 144052d0974eSSubhash Jadavani err = 0; 144152d0974eSSubhash Jadavani } else 144252d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 144352d0974eSSubhash Jadavani } 144452d0974eSSubhash Jadavani 144552d0974eSSubhash Jadavani /* 1446881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1447881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1448881d1c25SSeungwon Jeon */ 14497536d3f8SUlf Hansson if (card->ext_csd.cache_size > 0) { 1450881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 14518bc0678bSSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 14528bc0678bSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1453881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1454881d1c25SSeungwon Jeon goto free_card; 1455881d1c25SSeungwon Jeon 1456881d1c25SSeungwon Jeon /* 1457881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1458881d1c25SSeungwon Jeon */ 14598bc0678bSSeungwon Jeon if (err) { 14606606110dSJoe Perches pr_warn("%s: Cache is supported, but failed to turn on (%d)\n", 14618bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 14628bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 14638bc0678bSSeungwon Jeon err = 0; 14648bc0678bSSeungwon Jeon } else { 14658bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 14668bc0678bSSeungwon Jeon } 1467881d1c25SSeungwon Jeon } 1468881d1c25SSeungwon Jeon 1469abd9ac14SSeungwon Jeon /* 1470abd9ac14SSeungwon Jeon * The mandatory minimum values are defined for packed command. 1471abd9ac14SSeungwon Jeon * read: 5, write: 3 1472abd9ac14SSeungwon Jeon */ 1473abd9ac14SSeungwon Jeon if (card->ext_csd.max_packed_writes >= 3 && 1474abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads >= 5 && 1475abd9ac14SSeungwon Jeon host->caps2 & MMC_CAP2_PACKED_CMD) { 1476abd9ac14SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1477abd9ac14SSeungwon Jeon EXT_CSD_EXP_EVENTS_CTRL, 1478abd9ac14SSeungwon Jeon EXT_CSD_PACKED_EVENT_EN, 1479abd9ac14SSeungwon Jeon card->ext_csd.generic_cmd6_time); 1480abd9ac14SSeungwon Jeon if (err && err != -EBADMSG) 1481abd9ac14SSeungwon Jeon goto free_card; 1482abd9ac14SSeungwon Jeon if (err) { 1483abd9ac14SSeungwon Jeon pr_warn("%s: Enabling packed event failed\n", 1484abd9ac14SSeungwon Jeon mmc_hostname(card->host)); 1485abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 0; 1486abd9ac14SSeungwon Jeon err = 0; 1487abd9ac14SSeungwon Jeon } else { 1488abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 1; 1489abd9ac14SSeungwon Jeon } 1490abd9ac14SSeungwon Jeon } 1491abd9ac14SSeungwon Jeon 14926abaa0c9SPierre Ossman if (!oldcard) 14937ea239d9SPierre Ossman host->card = card; 14947ea239d9SPierre Ossman 149517b0429dSPierre Ossman return 0; 14966abaa0c9SPierre Ossman 14976abaa0c9SPierre Ossman free_card: 14986abaa0c9SPierre Ossman if (!oldcard) 14996abaa0c9SPierre Ossman mmc_remove_card(card); 15006abaa0c9SPierre Ossman err: 1501adf66a0dSPierre Ossman return err; 15026abaa0c9SPierre Ossman } 15036abaa0c9SPierre Ossman 150407a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 150507a68216SUlf Hansson { 150607a68216SUlf Hansson return (card && card->ext_csd.rev >= 3); 150707a68216SUlf Hansson } 150807a68216SUlf Hansson 150907a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 151007a68216SUlf Hansson { 151107a68216SUlf Hansson struct mmc_command cmd = {0}; 151207a68216SUlf Hansson struct mmc_card *card = host->card; 1513cb962e04SUlf Hansson unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); 151407a68216SUlf Hansson int err; 151507a68216SUlf Hansson 151607a68216SUlf Hansson err = mmc_deselect_cards(host); 151707a68216SUlf Hansson if (err) 151807a68216SUlf Hansson return err; 151907a68216SUlf Hansson 152007a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 152107a68216SUlf Hansson cmd.arg = card->rca << 16; 152207a68216SUlf Hansson cmd.arg |= 1 << 15; 152307a68216SUlf Hansson 1524cb962e04SUlf Hansson /* 1525cb962e04SUlf Hansson * If the max_busy_timeout of the host is specified, validate it against 1526cb962e04SUlf Hansson * the sleep cmd timeout. A failure means we need to prevent the host 1527cb962e04SUlf Hansson * from doing hw busy detection, which is done by converting to a R1 1528cb962e04SUlf Hansson * response instead of a R1B. 1529cb962e04SUlf Hansson */ 1530cb962e04SUlf Hansson if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { 1531cb962e04SUlf Hansson cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1532cb962e04SUlf Hansson } else { 153307a68216SUlf Hansson cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 1534cb962e04SUlf Hansson cmd.busy_timeout = timeout_ms; 1535cb962e04SUlf Hansson } 1536cb962e04SUlf Hansson 153707a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 153807a68216SUlf Hansson if (err) 153907a68216SUlf Hansson return err; 154007a68216SUlf Hansson 154107a68216SUlf Hansson /* 154207a68216SUlf Hansson * If the host does not wait while the card signals busy, then we will 154307a68216SUlf Hansson * will have to wait the sleep/awake timeout. Note, we cannot use the 154407a68216SUlf Hansson * SEND_STATUS command to poll the status because that command (and most 154507a68216SUlf Hansson * others) is invalid while the card sleeps. 154607a68216SUlf Hansson */ 1547cb962e04SUlf Hansson if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) 1548cb962e04SUlf Hansson mmc_delay(timeout_ms); 154907a68216SUlf Hansson 155007a68216SUlf Hansson return err; 155107a68216SUlf Hansson } 155207a68216SUlf Hansson 1553e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1554e6c08586SUlf Hansson { 1555e6c08586SUlf Hansson return card && 1556e6c08586SUlf Hansson mmc_card_mmc(card) && 1557e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1558e6c08586SUlf Hansson } 1559e6c08586SUlf Hansson 1560e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1561e6c08586SUlf Hansson { 1562e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1563e6c08586SUlf Hansson int err; 1564e6c08586SUlf Hansson 1565e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1566e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1567e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1568e6c08586SUlf Hansson 1569878e200bSUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1570e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 15714509f847SUlf Hansson notify_type, timeout, true, false, false); 1572e6c08586SUlf Hansson if (err) 1573e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1574e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1575e6c08586SUlf Hansson 1576e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 1577e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 1578e6c08586SUlf Hansson 1579e6c08586SUlf Hansson return err; 1580e6c08586SUlf Hansson } 1581e6c08586SUlf Hansson 15826abaa0c9SPierre Ossman /* 15836abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 15846abaa0c9SPierre Ossman */ 15856abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 15866abaa0c9SPierre Ossman { 15876abaa0c9SPierre Ossman BUG_ON(!host); 15886abaa0c9SPierre Ossman BUG_ON(!host->card); 15896abaa0c9SPierre Ossman 15906abaa0c9SPierre Ossman mmc_remove_card(host->card); 15916abaa0c9SPierre Ossman host->card = NULL; 15926abaa0c9SPierre Ossman } 15936abaa0c9SPierre Ossman 15946abaa0c9SPierre Ossman /* 1595d3049504SAdrian Hunter * Card detection - card is alive. 1596d3049504SAdrian Hunter */ 1597d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1598d3049504SAdrian Hunter { 1599d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1600d3049504SAdrian Hunter } 1601d3049504SAdrian Hunter 1602d3049504SAdrian Hunter /* 16036abaa0c9SPierre Ossman * Card detection callback from host. 16046abaa0c9SPierre Ossman */ 16056abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 16066abaa0c9SPierre Ossman { 16076abaa0c9SPierre Ossman int err; 16086abaa0c9SPierre Ossman 16096abaa0c9SPierre Ossman BUG_ON(!host); 16106abaa0c9SPierre Ossman BUG_ON(!host->card); 16116abaa0c9SPierre Ossman 1612e94cfef6SUlf Hansson mmc_get_card(host->card); 16136abaa0c9SPierre Ossman 16146abaa0c9SPierre Ossman /* 16156abaa0c9SPierre Ossman * Just check if our card has been removed. 16166abaa0c9SPierre Ossman */ 1617d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 16186abaa0c9SPierre Ossman 1619e94cfef6SUlf Hansson mmc_put_card(host->card); 16207ea239d9SPierre Ossman 162117b0429dSPierre Ossman if (err) { 16224101c16aSPierre Ossman mmc_remove(host); 16236abaa0c9SPierre Ossman 16246abaa0c9SPierre Ossman mmc_claim_host(host); 16256abaa0c9SPierre Ossman mmc_detach_bus(host); 16267f7e4129SUlf Hansson mmc_power_off(host); 16276abaa0c9SPierre Ossman mmc_release_host(host); 16286abaa0c9SPierre Ossman } 16296abaa0c9SPierre Ossman } 16306abaa0c9SPierre Ossman 163103d071fcSUlf Hansson static int _mmc_suspend(struct mmc_host *host, bool is_suspend) 16326abaa0c9SPierre Ossman { 1633c3805467SBalaji T K int err = 0; 163403d071fcSUlf Hansson unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : 163503d071fcSUlf Hansson EXT_CSD_POWER_OFF_LONG; 1636c3805467SBalaji T K 16376abaa0c9SPierre Ossman BUG_ON(!host); 16386abaa0c9SPierre Ossman BUG_ON(!host->card); 16396abaa0c9SPierre Ossman 16406abaa0c9SPierre Ossman mmc_claim_host(host); 1641881d926dSMaya Erez 16429ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 16439ec775f7SUlf Hansson goto out; 16449ec775f7SUlf Hansson 164539b9431bSUlf Hansson if (mmc_card_doing_bkops(host->card)) { 164639b9431bSUlf Hansson err = mmc_stop_bkops(host->card); 164739b9431bSUlf Hansson if (err) 164839b9431bSUlf Hansson goto out; 164939b9431bSUlf Hansson } 165039b9431bSUlf Hansson 165110e5d965SUlf Hansson err = mmc_flush_cache(host->card); 1652881d926dSMaya Erez if (err) 1653881d926dSMaya Erez goto out; 1654881d926dSMaya Erez 165543235679SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 165653275c21SUlf Hansson ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) 165703d071fcSUlf Hansson err = mmc_poweroff_notify(host->card, notify_type); 165807a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 165907a68216SUlf Hansson err = mmc_sleep(host); 1660e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 166185e727edSJaehoon Chung err = mmc_deselect_cards(host); 166295cdfb72SNicolas Pitre 16639ec775f7SUlf Hansson if (!err) { 166474590263SUlf Hansson mmc_power_off(host); 16659ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 16669ec775f7SUlf Hansson } 1667881d926dSMaya Erez out: 1668881d926dSMaya Erez mmc_release_host(host); 1669c3805467SBalaji T K return err; 16706abaa0c9SPierre Ossman } 16716abaa0c9SPierre Ossman 16726abaa0c9SPierre Ossman /* 16730cb403a2SUlf Hansson * Suspend callback 167403d071fcSUlf Hansson */ 167503d071fcSUlf Hansson static int mmc_suspend(struct mmc_host *host) 167603d071fcSUlf Hansson { 16770cb403a2SUlf Hansson int err; 16780cb403a2SUlf Hansson 16790cb403a2SUlf Hansson err = _mmc_suspend(host, true); 16800cb403a2SUlf Hansson if (!err) { 16810cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 16820cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 16830cb403a2SUlf Hansson } 16840cb403a2SUlf Hansson 16850cb403a2SUlf Hansson return err; 168603d071fcSUlf Hansson } 168703d071fcSUlf Hansson 168803d071fcSUlf Hansson /* 16896abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 16906abaa0c9SPierre Ossman * and, if so, restore all state to it. 16916abaa0c9SPierre Ossman */ 16920cb403a2SUlf Hansson static int _mmc_resume(struct mmc_host *host) 16936abaa0c9SPierre Ossman { 16949ec775f7SUlf Hansson int err = 0; 16956abaa0c9SPierre Ossman 16966abaa0c9SPierre Ossman BUG_ON(!host); 16976abaa0c9SPierre Ossman BUG_ON(!host->card); 16986abaa0c9SPierre Ossman 16996abaa0c9SPierre Ossman mmc_claim_host(host); 17009ec775f7SUlf Hansson 17019ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 17029ec775f7SUlf Hansson goto out; 17039ec775f7SUlf Hansson 170469041150SUlf Hansson mmc_power_up(host, host->card->ocr); 170569041150SUlf Hansson err = mmc_init_card(host, host->card->ocr, host->card); 17069ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 17072986d0bfSPierre Ossman 17089ec775f7SUlf Hansson out: 17099ec775f7SUlf Hansson mmc_release_host(host); 171095cdfb72SNicolas Pitre return err; 17116abaa0c9SPierre Ossman } 17126abaa0c9SPierre Ossman 17139ec775f7SUlf Hansson /* 17149ec775f7SUlf Hansson * Shutdown callback 17159ec775f7SUlf Hansson */ 17169ec775f7SUlf Hansson static int mmc_shutdown(struct mmc_host *host) 17179ec775f7SUlf Hansson { 17189ec775f7SUlf Hansson int err = 0; 17199ec775f7SUlf Hansson 17209ec775f7SUlf Hansson /* 17219ec775f7SUlf Hansson * In a specific case for poweroff notify, we need to resume the card 17229ec775f7SUlf Hansson * before we can shutdown it properly. 17239ec775f7SUlf Hansson */ 17249ec775f7SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 17259ec775f7SUlf Hansson !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) 17260cb403a2SUlf Hansson err = _mmc_resume(host); 17279ec775f7SUlf Hansson 17289ec775f7SUlf Hansson if (!err) 17299ec775f7SUlf Hansson err = _mmc_suspend(host, false); 17309ec775f7SUlf Hansson 17319ec775f7SUlf Hansson return err; 17329ec775f7SUlf Hansson } 1733c4d770d7SUlf Hansson 1734c4d770d7SUlf Hansson /* 17350cb403a2SUlf Hansson * Callback for resume. 17360cb403a2SUlf Hansson */ 17370cb403a2SUlf Hansson static int mmc_resume(struct mmc_host *host) 17380cb403a2SUlf Hansson { 17394d223782SUlf Hansson int err = 0; 17400cb403a2SUlf Hansson 17414d223782SUlf Hansson if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) { 17420cb403a2SUlf Hansson err = _mmc_resume(host); 17430cb403a2SUlf Hansson pm_runtime_set_active(&host->card->dev); 17440cb403a2SUlf Hansson pm_runtime_mark_last_busy(&host->card->dev); 17454d223782SUlf Hansson } 17460cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 17470cb403a2SUlf Hansson 17480cb403a2SUlf Hansson return err; 17490cb403a2SUlf Hansson } 17500cb403a2SUlf Hansson 17510cb403a2SUlf Hansson /* 1752c4d770d7SUlf Hansson * Callback for runtime_suspend. 1753c4d770d7SUlf Hansson */ 1754c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 1755c4d770d7SUlf Hansson { 1756c4d770d7SUlf Hansson int err; 1757c4d770d7SUlf Hansson 1758c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 1759c4d770d7SUlf Hansson return 0; 1760c4d770d7SUlf Hansson 17610cb403a2SUlf Hansson err = _mmc_suspend(host, true); 17620cc81a8cSUlf Hansson if (err) 1763c4d770d7SUlf Hansson pr_err("%s: error %d doing aggessive suspend\n", 1764c4d770d7SUlf Hansson mmc_hostname(host), err); 1765c4d770d7SUlf Hansson 1766c4d770d7SUlf Hansson return err; 1767c4d770d7SUlf Hansson } 1768c4d770d7SUlf Hansson 1769c4d770d7SUlf Hansson /* 1770c4d770d7SUlf Hansson * Callback for runtime_resume. 1771c4d770d7SUlf Hansson */ 1772c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 1773c4d770d7SUlf Hansson { 1774c4d770d7SUlf Hansson int err; 1775c4d770d7SUlf Hansson 17764d223782SUlf Hansson if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME))) 1777c4d770d7SUlf Hansson return 0; 1778c4d770d7SUlf Hansson 17790cb403a2SUlf Hansson err = _mmc_resume(host); 1780c4d770d7SUlf Hansson if (err) 1781c4d770d7SUlf Hansson pr_err("%s: error %d doing aggessive resume\n", 1782c4d770d7SUlf Hansson mmc_hostname(host), err); 1783c4d770d7SUlf Hansson 1784c4d770d7SUlf Hansson return 0; 1785c4d770d7SUlf Hansson } 1786c4d770d7SUlf Hansson 178712ae637fSOhad Ben-Cohen static int mmc_power_restore(struct mmc_host *host) 1788eae1aeeeSAdrian Hunter { 178912ae637fSOhad Ben-Cohen int ret; 179012ae637fSOhad Ben-Cohen 1791eae1aeeeSAdrian Hunter mmc_claim_host(host); 179269041150SUlf Hansson ret = mmc_init_card(host, host->card->ocr, host->card); 1793eae1aeeeSAdrian Hunter mmc_release_host(host); 179412ae637fSOhad Ben-Cohen 179512ae637fSOhad Ben-Cohen return ret; 1796eae1aeeeSAdrian Hunter } 1797eae1aeeeSAdrian Hunter 1798f855a371SJohan Rudholm int mmc_can_reset(struct mmc_card *card) 1799f855a371SJohan Rudholm { 1800f855a371SJohan Rudholm u8 rst_n_function; 1801f855a371SJohan Rudholm 1802f855a371SJohan Rudholm rst_n_function = card->ext_csd.rst_n_function; 1803f855a371SJohan Rudholm if ((rst_n_function & EXT_CSD_RST_N_EN_MASK) != EXT_CSD_RST_N_ENABLED) 1804f855a371SJohan Rudholm return 0; 1805f855a371SJohan Rudholm return 1; 1806f855a371SJohan Rudholm } 1807f855a371SJohan Rudholm EXPORT_SYMBOL(mmc_can_reset); 1808f855a371SJohan Rudholm 1809f855a371SJohan Rudholm static int mmc_reset(struct mmc_host *host) 1810f855a371SJohan Rudholm { 1811f855a371SJohan Rudholm struct mmc_card *card = host->card; 1812f855a371SJohan Rudholm u32 status; 1813f855a371SJohan Rudholm 1814f855a371SJohan Rudholm if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset) 1815f855a371SJohan Rudholm return -EOPNOTSUPP; 1816f855a371SJohan Rudholm 1817f855a371SJohan Rudholm if (!mmc_can_reset(card)) 1818f855a371SJohan Rudholm return -EOPNOTSUPP; 1819f855a371SJohan Rudholm 1820f855a371SJohan Rudholm mmc_host_clk_hold(host); 1821f855a371SJohan Rudholm mmc_set_clock(host, host->f_init); 1822f855a371SJohan Rudholm 1823f855a371SJohan Rudholm host->ops->hw_reset(host); 1824f855a371SJohan Rudholm 1825f855a371SJohan Rudholm /* If the reset has happened, then a status command will fail */ 1826f855a371SJohan Rudholm if (!mmc_send_status(card, &status)) { 1827f855a371SJohan Rudholm mmc_host_clk_release(host); 1828f855a371SJohan Rudholm return -ENOSYS; 1829f855a371SJohan Rudholm } 1830f855a371SJohan Rudholm 1831f855a371SJohan Rudholm /* Set initial state and call mmc_set_ios */ 1832f855a371SJohan Rudholm mmc_set_initial_state(host); 1833f855a371SJohan Rudholm mmc_host_clk_release(host); 1834f855a371SJohan Rudholm 1835f855a371SJohan Rudholm return mmc_power_restore(host); 1836f855a371SJohan Rudholm } 1837f855a371SJohan Rudholm 18389feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 18399feae246SAdrian Hunter .remove = mmc_remove, 18409feae246SAdrian Hunter .detect = mmc_detect, 18419feae246SAdrian Hunter .suspend = mmc_suspend, 18429feae246SAdrian Hunter .resume = mmc_resume, 1843c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 1844c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 1845eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1846d3049504SAdrian Hunter .alive = mmc_alive, 1847486fdbbcSUlf Hansson .shutdown = mmc_shutdown, 1848f855a371SJohan Rudholm .reset = mmc_reset, 18499feae246SAdrian Hunter }; 18509feae246SAdrian Hunter 18516abaa0c9SPierre Ossman /* 18526abaa0c9SPierre Ossman * Starting point for MMC card init. 18536abaa0c9SPierre Ossman */ 1854807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 18556abaa0c9SPierre Ossman { 18566abaa0c9SPierre Ossman int err; 185769041150SUlf Hansson u32 ocr, rocr; 18586abaa0c9SPierre Ossman 18596abaa0c9SPierre Ossman BUG_ON(!host); 1860d84075c8SPierre Ossman WARN_ON(!host->claimed); 18616abaa0c9SPierre Ossman 186244669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 186344669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 186444669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 186544669034SStefan Nilsson XK 1866807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 1867807e8e40SAndy Ross if (err) 1868807e8e40SAndy Ross return err; 1869807e8e40SAndy Ross 18702501c917SUlf Hansson mmc_attach_bus(host, &mmc_ops); 18718f230f45STakashi Iwai if (host->ocr_avail_mmc) 18728f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 18736abaa0c9SPierre Ossman 18746abaa0c9SPierre Ossman /* 1875af517150SDavid Brownell * We need to get OCR a different way for SPI. 1876af517150SDavid Brownell */ 1877af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1878af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 1879af517150SDavid Brownell if (err) 1880af517150SDavid Brownell goto err; 1881af517150SDavid Brownell } 1882af517150SDavid Brownell 188369041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 18846abaa0c9SPierre Ossman 18856abaa0c9SPierre Ossman /* 18866abaa0c9SPierre Ossman * Can we support the voltage of the card? 18876abaa0c9SPierre Ossman */ 188869041150SUlf Hansson if (!rocr) { 1889109b5bedSPierre Ossman err = -EINVAL; 18906abaa0c9SPierre Ossman goto err; 1891109b5bedSPierre Ossman } 18926abaa0c9SPierre Ossman 18936abaa0c9SPierre Ossman /* 18946abaa0c9SPierre Ossman * Detect and init the card. 18956abaa0c9SPierre Ossman */ 189669041150SUlf Hansson err = mmc_init_card(host, rocr, NULL); 189717b0429dSPierre Ossman if (err) 18986abaa0c9SPierre Ossman goto err; 18996abaa0c9SPierre Ossman 19006abaa0c9SPierre Ossman mmc_release_host(host); 19014101c16aSPierre Ossman err = mmc_add_card(host->card); 1902807e8e40SAndy Ross mmc_claim_host(host); 19037ea239d9SPierre Ossman if (err) 19042986d0bfSPierre Ossman goto remove_card; 19057ea239d9SPierre Ossman 19067ea239d9SPierre Ossman return 0; 19077ea239d9SPierre Ossman 19082986d0bfSPierre Ossman remove_card: 1909807e8e40SAndy Ross mmc_release_host(host); 19106abaa0c9SPierre Ossman mmc_remove_card(host->card); 19112986d0bfSPierre Ossman mmc_claim_host(host); 1912807e8e40SAndy Ross host->card = NULL; 19137ea239d9SPierre Ossman err: 19147ea239d9SPierre Ossman mmc_detach_bus(host); 19157ea239d9SPierre Ossman 1916a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 1917109b5bedSPierre Ossman mmc_hostname(host), err); 1918109b5bedSPierre Ossman 1919adf66a0dSPierre Ossman return err; 19207ea239d9SPierre Ossman } 1921