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> 167ea239d9SPierre Ossman 177ea239d9SPierre Ossman #include <linux/mmc/host.h> 187ea239d9SPierre Ossman #include <linux/mmc/card.h> 197ea239d9SPierre Ossman #include <linux/mmc/mmc.h> 207ea239d9SPierre Ossman 217ea239d9SPierre Ossman #include "core.h" 224101c16aSPierre Ossman #include "bus.h" 237ea239d9SPierre Ossman #include "mmc_ops.h" 244c4cb171SPhilip Rakity #include "sd_ops.h" 257ea239d9SPierre Ossman 267ea239d9SPierre Ossman static const unsigned int tran_exp[] = { 277ea239d9SPierre Ossman 10000, 100000, 1000000, 10000000, 287ea239d9SPierre Ossman 0, 0, 0, 0 297ea239d9SPierre Ossman }; 307ea239d9SPierre Ossman 317ea239d9SPierre Ossman static const unsigned char tran_mant[] = { 327ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 337ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 347ea239d9SPierre Ossman }; 357ea239d9SPierre Ossman 367ea239d9SPierre Ossman static const unsigned int tacc_exp[] = { 377ea239d9SPierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 387ea239d9SPierre Ossman }; 397ea239d9SPierre Ossman 407ea239d9SPierre Ossman static const unsigned int tacc_mant[] = { 417ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 427ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 437ea239d9SPierre Ossman }; 447ea239d9SPierre Ossman 457ea239d9SPierre Ossman #define UNSTUFF_BITS(resp,start,size) \ 467ea239d9SPierre Ossman ({ \ 477ea239d9SPierre Ossman const int __size = size; \ 487ea239d9SPierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 497ea239d9SPierre Ossman const int __off = 3 - ((start) / 32); \ 507ea239d9SPierre Ossman const int __shft = (start) & 31; \ 517ea239d9SPierre Ossman u32 __res; \ 527ea239d9SPierre Ossman \ 537ea239d9SPierre Ossman __res = resp[__off] >> __shft; \ 547ea239d9SPierre Ossman if (__size + __shft > 32) \ 557ea239d9SPierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 567ea239d9SPierre Ossman __res & __mask; \ 577ea239d9SPierre Ossman }) 587ea239d9SPierre Ossman 597ea239d9SPierre Ossman /* 607ea239d9SPierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 617ea239d9SPierre Ossman */ 62bd766312SPierre Ossman static int mmc_decode_cid(struct mmc_card *card) 637ea239d9SPierre Ossman { 647ea239d9SPierre Ossman u32 *resp = card->raw_cid; 657ea239d9SPierre Ossman 667ea239d9SPierre Ossman /* 677ea239d9SPierre Ossman * The selection of the format here is based upon published 687ea239d9SPierre Ossman * specs from sandisk and from what people have reported. 697ea239d9SPierre Ossman */ 707ea239d9SPierre Ossman switch (card->csd.mmca_vsn) { 717ea239d9SPierre Ossman case 0: /* MMC v1.0 - v1.2 */ 727ea239d9SPierre Ossman case 1: /* MMC v1.4 */ 737ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); 747ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 757ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 767ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 777ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 787ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 797ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 807ea239d9SPierre Ossman card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); 817ea239d9SPierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); 827ea239d9SPierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); 837ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 24); 847ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 857ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 867ea239d9SPierre Ossman break; 877ea239d9SPierre Ossman 887ea239d9SPierre Ossman case 2: /* MMC v2.0 - v2.2 */ 897ea239d9SPierre Ossman case 3: /* MMC v3.1 - v3.3 */ 907ea239d9SPierre Ossman case 4: /* MMC v4 */ 917ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 927ea239d9SPierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 937ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 947ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 957ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 967ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 977ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 987ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 997ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 32); 1007ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1017ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1027ea239d9SPierre Ossman break; 1037ea239d9SPierre Ossman 1047ea239d9SPierre Ossman default: 105a3c76eb9SGirish K S pr_err("%s: card has unknown MMCA version %d\n", 1067ea239d9SPierre Ossman mmc_hostname(card->host), card->csd.mmca_vsn); 107bd766312SPierre Ossman return -EINVAL; 1087ea239d9SPierre Ossman } 109bd766312SPierre Ossman 110bd766312SPierre Ossman return 0; 1117ea239d9SPierre Ossman } 1127ea239d9SPierre Ossman 113dfe86cbaSAdrian Hunter static void mmc_set_erase_size(struct mmc_card *card) 114dfe86cbaSAdrian Hunter { 115dfe86cbaSAdrian Hunter if (card->ext_csd.erase_group_def & 1) 116dfe86cbaSAdrian Hunter card->erase_size = card->ext_csd.hc_erase_size; 117dfe86cbaSAdrian Hunter else 118dfe86cbaSAdrian Hunter card->erase_size = card->csd.erase_size; 119dfe86cbaSAdrian Hunter 120dfe86cbaSAdrian Hunter mmc_init_erase(card); 121dfe86cbaSAdrian Hunter } 122dfe86cbaSAdrian Hunter 1237ea239d9SPierre Ossman /* 1247ea239d9SPierre Ossman * Given a 128-bit response, decode to our card CSD structure. 1257ea239d9SPierre Ossman */ 126bd766312SPierre Ossman static int mmc_decode_csd(struct mmc_card *card) 1277ea239d9SPierre Ossman { 1287ea239d9SPierre Ossman struct mmc_csd *csd = &card->csd; 129dfe86cbaSAdrian Hunter unsigned int e, m, a, b; 1307ea239d9SPierre Ossman u32 *resp = card->raw_csd; 1317ea239d9SPierre Ossman 1327ea239d9SPierre Ossman /* 1337ea239d9SPierre Ossman * We only understand CSD structure v1.1 and v1.2. 1347ea239d9SPierre Ossman * v1.2 has extra information in bits 15, 11 and 10. 1356da24b78SKyungmin Park * We also support eMMC v4.4 & v4.41. 1367ea239d9SPierre Ossman */ 1376da24b78SKyungmin Park csd->structure = UNSTUFF_BITS(resp, 126, 2); 1386da24b78SKyungmin Park if (csd->structure == 0) { 139a3c76eb9SGirish K S pr_err("%s: unrecognised CSD structure version %d\n", 1406da24b78SKyungmin Park mmc_hostname(card->host), csd->structure); 141bd766312SPierre Ossman return -EINVAL; 1427ea239d9SPierre Ossman } 1437ea239d9SPierre Ossman 1447ea239d9SPierre Ossman csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); 1457ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1467ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1477ea239d9SPierre Ossman csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; 1487ea239d9SPierre Ossman csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1497ea239d9SPierre Ossman 1507ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1517ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1527ea239d9SPierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1537ea239d9SPierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1547ea239d9SPierre Ossman 1557ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1567ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1577ea239d9SPierre Ossman csd->capacity = (1 + m) << (e + 2); 1587ea239d9SPierre Ossman 1597ea239d9SPierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1607ea239d9SPierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1617ea239d9SPierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1627ea239d9SPierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1637ea239d9SPierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1647ea239d9SPierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1657ea239d9SPierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 166bd766312SPierre Ossman 167dfe86cbaSAdrian Hunter if (csd->write_blkbits >= 9) { 168dfe86cbaSAdrian Hunter a = UNSTUFF_BITS(resp, 42, 5); 169dfe86cbaSAdrian Hunter b = UNSTUFF_BITS(resp, 37, 5); 170dfe86cbaSAdrian Hunter csd->erase_size = (a + 1) * (b + 1); 171dfe86cbaSAdrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 172dfe86cbaSAdrian Hunter } 173dfe86cbaSAdrian Hunter 174bd766312SPierre Ossman return 0; 1757ea239d9SPierre Ossman } 1767ea239d9SPierre Ossman 1777ea239d9SPierre Ossman /* 17808ee80ccSPhilip Rakity * Read extended CSD. 1797ea239d9SPierre Ossman */ 18008ee80ccSPhilip Rakity static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) 1817ea239d9SPierre Ossman { 1827ea239d9SPierre Ossman int err; 1837ea239d9SPierre Ossman u8 *ext_csd; 1847ea239d9SPierre Ossman 1857ea239d9SPierre Ossman BUG_ON(!card); 18608ee80ccSPhilip Rakity BUG_ON(!new_ext_csd); 18708ee80ccSPhilip Rakity 18808ee80ccSPhilip Rakity *new_ext_csd = NULL; 1897ea239d9SPierre Ossman 1907ea239d9SPierre Ossman if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 19117b0429dSPierre Ossman return 0; 1927ea239d9SPierre Ossman 1937ea239d9SPierre Ossman /* 1947ea239d9SPierre Ossman * As the ext_csd is so large and mostly unused, we don't store the 1957ea239d9SPierre Ossman * raw block in mmc_card. 1967ea239d9SPierre Ossman */ 1977ea239d9SPierre Ossman ext_csd = kmalloc(512, GFP_KERNEL); 1987ea239d9SPierre Ossman if (!ext_csd) { 199a3c76eb9SGirish K S pr_err("%s: could not allocate a buffer to " 200adf66a0dSPierre Ossman "receive the ext_csd.\n", mmc_hostname(card->host)); 20117b0429dSPierre Ossman return -ENOMEM; 2027ea239d9SPierre Ossman } 2037ea239d9SPierre Ossman 2047ea239d9SPierre Ossman err = mmc_send_ext_csd(card, ext_csd); 20517b0429dSPierre Ossman if (err) { 20608ee80ccSPhilip Rakity kfree(ext_csd); 20708ee80ccSPhilip Rakity *new_ext_csd = NULL; 20808ee80ccSPhilip Rakity 209d08ebeddSWolfgang Muees /* If the host or the card can't do the switch, 210d08ebeddSWolfgang Muees * fail more gracefully. */ 211d08ebeddSWolfgang Muees if ((err != -EINVAL) 212d08ebeddSWolfgang Muees && (err != -ENOSYS) 213d08ebeddSWolfgang Muees && (err != -EFAULT)) 21408ee80ccSPhilip Rakity return err; 215adf66a0dSPierre Ossman 216adf66a0dSPierre Ossman /* 2177ea239d9SPierre Ossman * High capacity cards should have this "magic" size 2187ea239d9SPierre Ossman * stored in their CSD. 2197ea239d9SPierre Ossman */ 2207ea239d9SPierre Ossman if (card->csd.capacity == (4096 * 512)) { 221a3c76eb9SGirish K S pr_err("%s: unable to read EXT_CSD " 2227ea239d9SPierre Ossman "on a possible high capacity card. " 2237ea239d9SPierre Ossman "Card will be ignored.\n", 2247ea239d9SPierre Ossman mmc_hostname(card->host)); 2257ea239d9SPierre Ossman } else { 226a3c76eb9SGirish K S pr_warning("%s: unable to read " 2277ea239d9SPierre Ossman "EXT_CSD, performance might " 2287ea239d9SPierre Ossman "suffer.\n", 2297ea239d9SPierre Ossman mmc_hostname(card->host)); 23017b0429dSPierre Ossman err = 0; 2317ea239d9SPierre Ossman } 23208ee80ccSPhilip Rakity } else 23308ee80ccSPhilip Rakity *new_ext_csd = ext_csd; 234adf66a0dSPierre Ossman 23508ee80ccSPhilip Rakity return err; 2367ea239d9SPierre Ossman } 2377ea239d9SPierre Ossman 23896cf5f02SSeungwon Jeon static void mmc_select_card_type(struct mmc_card *card) 23996cf5f02SSeungwon Jeon { 24096cf5f02SSeungwon Jeon struct mmc_host *host = card->host; 24196cf5f02SSeungwon Jeon u8 card_type = card->ext_csd.raw_card_type & EXT_CSD_CARD_TYPE_MASK; 24296cf5f02SSeungwon Jeon unsigned int caps = host->caps, caps2 = host->caps2; 24396cf5f02SSeungwon Jeon unsigned int hs_max_dtr = 0; 24496cf5f02SSeungwon Jeon 24596cf5f02SSeungwon Jeon if (card_type & EXT_CSD_CARD_TYPE_26) 24696cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_26_MAX_DTR; 24796cf5f02SSeungwon Jeon 24896cf5f02SSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 24996cf5f02SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_52) 25096cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_52_MAX_DTR; 25196cf5f02SSeungwon Jeon 25296cf5f02SSeungwon Jeon if ((caps & MMC_CAP_1_8V_DDR && 25396cf5f02SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) || 25496cf5f02SSeungwon Jeon (caps & MMC_CAP_1_2V_DDR && 25596cf5f02SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)) 25696cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 25796cf5f02SSeungwon Jeon 25896cf5f02SSeungwon Jeon if ((caps2 & MMC_CAP2_HS200_1_8V_SDR && 25996cf5f02SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_SDR_1_8V) || 26096cf5f02SSeungwon Jeon (caps2 & MMC_CAP2_HS200_1_2V_SDR && 26196cf5f02SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_SDR_1_2V)) 26296cf5f02SSeungwon Jeon hs_max_dtr = MMC_HS200_MAX_DTR; 26396cf5f02SSeungwon Jeon 26496cf5f02SSeungwon Jeon card->ext_csd.hs_max_dtr = hs_max_dtr; 26596cf5f02SSeungwon Jeon card->ext_csd.card_type = card_type; 26696cf5f02SSeungwon Jeon } 26796cf5f02SSeungwon Jeon 26808ee80ccSPhilip Rakity /* 26908ee80ccSPhilip Rakity * Decode extended CSD. 27008ee80ccSPhilip Rakity */ 27108ee80ccSPhilip Rakity static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) 27208ee80ccSPhilip Rakity { 273e0c368d5SNamjae Jeon int err = 0, idx; 274e0c368d5SNamjae Jeon unsigned int part_size; 275e0c368d5SNamjae Jeon u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; 27608ee80ccSPhilip Rakity 27708ee80ccSPhilip Rakity BUG_ON(!card); 27808ee80ccSPhilip Rakity 27908ee80ccSPhilip Rakity if (!ext_csd) 28008ee80ccSPhilip Rakity return 0; 28108ee80ccSPhilip Rakity 2826da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 283f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 2846da24b78SKyungmin Park if (card->csd.structure == 3) { 285f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 286a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 2878fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 288f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 2896da24b78SKyungmin Park err = -EINVAL; 2906da24b78SKyungmin Park goto out; 2916da24b78SKyungmin Park } 2926da24b78SKyungmin Park } 2936da24b78SKyungmin Park 2946da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 29538ca2850SKyungmin Park if (card->ext_csd.rev > 6) { 296a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD revision %d\n", 2976da24b78SKyungmin Park mmc_hostname(card->host), card->ext_csd.rev); 29800cedfa6SFlorin Malita err = -EINVAL; 29900cedfa6SFlorin Malita goto out; 300d7604d76SPierre Ossman } 301d7604d76SPierre Ossman 302f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 303f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 304f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 305f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 306b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 3077ea239d9SPierre Ossman card->ext_csd.sectors = 3087ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 3097ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 3107ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 3117ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 312fc8a0985SHanumath Prasad 313fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 314fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 3157ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 316d7604d76SPierre Ossman } 31796cf5f02SSeungwon Jeon 318f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 31996cf5f02SSeungwon Jeon mmc_select_card_type(card); 3207ea239d9SPierre Ossman 321f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 322f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 323f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 324f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 325f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 326b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 327b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 328371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 329371a689fSAndrei Warkentin 330371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 331371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 332b1ebe384SJarkko Lavinen 333b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 334b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 335b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 336b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 337dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 338dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 339dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 340dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 341dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 342dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 343f4c5522bSAndrei Warkentin 344f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 345371a689fSAndrei Warkentin 346371a689fSAndrei Warkentin /* 347371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 348371a689fSAndrei Warkentin * multiples of 128K. 349371a689fSAndrei Warkentin */ 350e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 351e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 352e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 353e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 354e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 355add710eaSJohan Rudholm "boot%d", idx, true, 356add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 357e0c368d5SNamjae Jeon } 358e0c368d5SNamjae Jeon } 359b1ebe384SJarkko Lavinen } 360b1ebe384SJarkko Lavinen 361f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 362dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 363f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 364f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 365f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 366f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 367f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 368f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 369f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 370f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 371dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 372709de99dSChuanxiao Dong /* 373709de99dSChuanxiao Dong * Enhanced area feature support -- check whether the eMMC 374709de99dSChuanxiao Dong * card has the Enhanced area enabled. If so, export enhanced 375709de99dSChuanxiao Dong * area offset and size to user by adding sysfs interface. 376709de99dSChuanxiao Dong */ 3775238acbeSAndrei Warkentin card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 378709de99dSChuanxiao Dong if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 379709de99dSChuanxiao Dong (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 380e0c368d5SNamjae Jeon hc_erase_grp_sz = 381709de99dSChuanxiao Dong ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 382e0c368d5SNamjae Jeon hc_wp_grp_sz = 383709de99dSChuanxiao Dong ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 384709de99dSChuanxiao Dong 385709de99dSChuanxiao Dong card->ext_csd.enhanced_area_en = 1; 386709de99dSChuanxiao Dong /* 387709de99dSChuanxiao Dong * calculate the enhanced data area offset, in bytes 388709de99dSChuanxiao Dong */ 389709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = 390709de99dSChuanxiao Dong (ext_csd[139] << 24) + (ext_csd[138] << 16) + 391709de99dSChuanxiao Dong (ext_csd[137] << 8) + ext_csd[136]; 392709de99dSChuanxiao Dong if (mmc_card_blockaddr(card)) 393709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset <<= 9; 394709de99dSChuanxiao Dong /* 395709de99dSChuanxiao Dong * calculate the enhanced data area size, in kilobytes 396709de99dSChuanxiao Dong */ 397709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = 398709de99dSChuanxiao Dong (ext_csd[142] << 16) + (ext_csd[141] << 8) + 399709de99dSChuanxiao Dong ext_csd[140]; 400709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size *= 401709de99dSChuanxiao Dong (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 402709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size <<= 9; 403709de99dSChuanxiao Dong } else { 404709de99dSChuanxiao Dong /* 405709de99dSChuanxiao Dong * If the enhanced area is not enabled, disable these 406709de99dSChuanxiao Dong * device attributes. 407709de99dSChuanxiao Dong */ 408709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 409709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 410709de99dSChuanxiao Dong } 411e0c368d5SNamjae Jeon 412e0c368d5SNamjae Jeon /* 413e0c368d5SNamjae Jeon * General purpose partition feature support -- 414e0c368d5SNamjae Jeon * If ext_csd has the size of general purpose partitions, 415e0c368d5SNamjae Jeon * set size, part_cfg, partition name in mmc_part. 416e0c368d5SNamjae Jeon */ 417e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 418e0c368d5SNamjae Jeon EXT_CSD_PART_SUPPORT_PART_EN) { 419e0c368d5SNamjae Jeon if (card->ext_csd.enhanced_area_en != 1) { 420e0c368d5SNamjae Jeon hc_erase_grp_sz = 421e0c368d5SNamjae Jeon ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 422e0c368d5SNamjae Jeon hc_wp_grp_sz = 423e0c368d5SNamjae Jeon ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 424e0c368d5SNamjae Jeon 425e0c368d5SNamjae Jeon card->ext_csd.enhanced_area_en = 1; 426e0c368d5SNamjae Jeon } 427e0c368d5SNamjae Jeon 428e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 429e0c368d5SNamjae Jeon if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 430e0c368d5SNamjae Jeon !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 431e0c368d5SNamjae Jeon !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 432e0c368d5SNamjae Jeon continue; 433e0c368d5SNamjae Jeon part_size = 434e0c368d5SNamjae Jeon (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 435e0c368d5SNamjae Jeon << 16) + 436e0c368d5SNamjae Jeon (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 437e0c368d5SNamjae Jeon << 8) + 438e0c368d5SNamjae Jeon ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 439e0c368d5SNamjae Jeon part_size *= (size_t)(hc_erase_grp_sz * 440e0c368d5SNamjae Jeon hc_wp_grp_sz); 441e0c368d5SNamjae Jeon mmc_part_add(card, part_size << 19, 442e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 443add710eaSJohan Rudholm "gp%d", idx, false, 444add710eaSJohan Rudholm MMC_BLK_DATA_AREA_GP); 445e0c368d5SNamjae Jeon } 446e0c368d5SNamjae Jeon } 447dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 448dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 449dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 450dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 451dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 452dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 453dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 454dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 455add710eaSJohan Rudholm 456add710eaSJohan Rudholm /* 457add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 458add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 459add710eaSJohan Rudholm * take into account the value of boot_locked below. 460add710eaSJohan Rudholm */ 461add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 462add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 463dfe86cbaSAdrian Hunter } 464dfe86cbaSAdrian Hunter 465b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 466950d56acSJaehoon Chung /* check whether the eMMC card supports BKOPS */ 467950d56acSJaehoon Chung if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { 468950d56acSJaehoon Chung card->ext_csd.bkops = 1; 469950d56acSJaehoon Chung card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN]; 470950d56acSJaehoon Chung card->ext_csd.raw_bkops_status = 471950d56acSJaehoon Chung ext_csd[EXT_CSD_BKOPS_STATUS]; 472950d56acSJaehoon Chung if (!card->ext_csd.bkops_en) 473950d56acSJaehoon Chung pr_info("%s: BKOPS_EN bit is not set\n", 474950d56acSJaehoon Chung mmc_hostname(card->host)); 475950d56acSJaehoon Chung } 476950d56acSJaehoon Chung 477eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 478eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { 479eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 480eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 481eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 482eb0d8f13SJaehoon Chung else 483eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 484eb0d8f13SJaehoon Chung /* 485eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 486eb0d8f13SJaehoon Chung * a command interrupted by HPI 487eb0d8f13SJaehoon Chung */ 488eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 489eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 490eb0d8f13SJaehoon Chung } 491eb0d8f13SJaehoon Chung 492f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 493b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 494b2499518SAdrian Hunter } 495f4c5522bSAndrei Warkentin 4965238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 497dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 498dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 499dfe86cbaSAdrian Hunter else 500dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 501dfe86cbaSAdrian Hunter 502336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 503bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 504336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 505336c716aSSeungwon Jeon 506b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 507b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 508bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 509bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 510b23cf0bdSSeungwon Jeon 511881d1c25SSeungwon Jeon card->ext_csd.cache_size = 512881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 513881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 514881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 515881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 5164265900eSSaugata Das 5174265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 5184265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 5194265900eSSaugata Das else 5204265900eSSaugata Das card->ext_csd.data_sector_size = 512; 5214265900eSSaugata Das 5224265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 5234265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 5244265900eSSaugata Das card->ext_csd.data_tag_unit_size = 5254265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 5264265900eSSaugata Das (card->ext_csd.data_sector_size); 5274265900eSSaugata Das } else { 5284265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 5294265900eSSaugata Das } 530a5075eb9SSaugata Das } else { 531a5075eb9SSaugata Das card->ext_csd.data_sector_size = 512; 532336c716aSSeungwon Jeon } 533881d1c25SSeungwon Jeon 5347ea239d9SPierre Ossman out: 53508ee80ccSPhilip Rakity return err; 53608ee80ccSPhilip Rakity } 5377ea239d9SPierre Ossman 53808ee80ccSPhilip Rakity static inline void mmc_free_ext_csd(u8 *ext_csd) 53908ee80ccSPhilip Rakity { 54008ee80ccSPhilip Rakity kfree(ext_csd); 54108ee80ccSPhilip Rakity } 54208ee80ccSPhilip Rakity 54308ee80ccSPhilip Rakity 544f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 54508ee80ccSPhilip Rakity { 54608ee80ccSPhilip Rakity u8 *bw_ext_csd; 54708ee80ccSPhilip Rakity int err; 54808ee80ccSPhilip Rakity 549f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 550f39b2dd9SPhilip Rakity return 0; 55108ee80ccSPhilip Rakity 552f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 553f39b2dd9SPhilip Rakity 554f39b2dd9SPhilip Rakity if (err || bw_ext_csd == NULL) { 55508ee80ccSPhilip Rakity err = -EINVAL; 55608ee80ccSPhilip Rakity goto out; 55708ee80ccSPhilip Rakity } 55808ee80ccSPhilip Rakity 55908ee80ccSPhilip Rakity /* only compare read only fields */ 560dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 56108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 562f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 56308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 564f39b2dd9SPhilip Rakity (card->ext_csd.rev == 56508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 566f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 56708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 568f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 56908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 570f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 57108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 572f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 57308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 574f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 57508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 576f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 57708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 578f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 57908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 580f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 58108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 582f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 58308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 584f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 58508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 586f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 587f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 588f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 589f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 590f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 591f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 592f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 593f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 3])); 59408ee80ccSPhilip Rakity if (err) 59508ee80ccSPhilip Rakity err = -EINVAL; 59608ee80ccSPhilip Rakity 59708ee80ccSPhilip Rakity out: 59808ee80ccSPhilip Rakity mmc_free_ext_csd(bw_ext_csd); 5997ea239d9SPierre Ossman return err; 6007ea239d9SPierre Ossman } 6017ea239d9SPierre Ossman 60251ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 60351ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 60451ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 60551ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 60651ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 607dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 608dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 60951ec92e2SPierre Ossman MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); 61051ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 61151ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 61251ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 61351ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 61451ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 615709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 616709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 617709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 61851ec92e2SPierre Ossman 61951ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 62051ec92e2SPierre Ossman &dev_attr_cid.attr, 62151ec92e2SPierre Ossman &dev_attr_csd.attr, 62251ec92e2SPierre Ossman &dev_attr_date.attr, 623dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 624dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 62551ec92e2SPierre Ossman &dev_attr_fwrev.attr, 62651ec92e2SPierre Ossman &dev_attr_hwrev.attr, 62751ec92e2SPierre Ossman &dev_attr_manfid.attr, 62851ec92e2SPierre Ossman &dev_attr_name.attr, 62951ec92e2SPierre Ossman &dev_attr_oemid.attr, 63051ec92e2SPierre Ossman &dev_attr_serial.attr, 631709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 632709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 63351ec92e2SPierre Ossman NULL, 63451ec92e2SPierre Ossman }; 63551ec92e2SPierre Ossman 63651ec92e2SPierre Ossman static struct attribute_group mmc_std_attr_group = { 63751ec92e2SPierre Ossman .attrs = mmc_std_attrs, 63851ec92e2SPierre Ossman }; 63951ec92e2SPierre Ossman 640a4dbd674SDavid Brownell static const struct attribute_group *mmc_attr_groups[] = { 64151ec92e2SPierre Ossman &mmc_std_attr_group, 64251ec92e2SPierre Ossman NULL, 64351ec92e2SPierre Ossman }; 64451ec92e2SPierre Ossman 64551ec92e2SPierre Ossman static struct device_type mmc_type = { 64651ec92e2SPierre Ossman .groups = mmc_attr_groups, 64751ec92e2SPierre Ossman }; 64851ec92e2SPierre Ossman 6497ea239d9SPierre Ossman /* 650b87d8dbfSGirish K S * Select the PowerClass for the current bus width 651b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 652b87d8dbfSGirish K S * extended CSD register, select it by executing the 653b87d8dbfSGirish K S * mmc_switch command. 654b87d8dbfSGirish K S */ 655b87d8dbfSGirish K S static int mmc_select_powerclass(struct mmc_card *card, 656b87d8dbfSGirish K S unsigned int bus_width, u8 *ext_csd) 657b87d8dbfSGirish K S { 658b87d8dbfSGirish K S int err = 0; 659b87d8dbfSGirish K S unsigned int pwrclass_val; 660b87d8dbfSGirish K S unsigned int index = 0; 661b87d8dbfSGirish K S struct mmc_host *host; 662b87d8dbfSGirish K S 663b87d8dbfSGirish K S BUG_ON(!card); 664b87d8dbfSGirish K S 665b87d8dbfSGirish K S host = card->host; 666b87d8dbfSGirish K S BUG_ON(!host); 667b87d8dbfSGirish K S 668b87d8dbfSGirish K S if (ext_csd == NULL) 669b87d8dbfSGirish K S return 0; 670b87d8dbfSGirish K S 671b87d8dbfSGirish K S /* Power class selection is supported for versions >= 4.0 */ 672b87d8dbfSGirish K S if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 673b87d8dbfSGirish K S return 0; 674b87d8dbfSGirish K S 675b87d8dbfSGirish K S /* Power class values are defined only for 4/8 bit bus */ 676b87d8dbfSGirish K S if (bus_width == EXT_CSD_BUS_WIDTH_1) 677b87d8dbfSGirish K S return 0; 678b87d8dbfSGirish K S 679b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 680b87d8dbfSGirish K S case MMC_VDD_165_195: 681b87d8dbfSGirish K S if (host->ios.clock <= 26000000) 682b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_26_195; 683b87d8dbfSGirish K S else if (host->ios.clock <= 52000000) 684b87d8dbfSGirish K S index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 685b87d8dbfSGirish K S EXT_CSD_PWR_CL_52_195 : 686b87d8dbfSGirish K S EXT_CSD_PWR_CL_DDR_52_195; 687b87d8dbfSGirish K S else if (host->ios.clock <= 200000000) 688b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_200_195; 689b87d8dbfSGirish K S break; 69093fc5a47SSubhash Jadavani case MMC_VDD_27_28: 69193fc5a47SSubhash Jadavani case MMC_VDD_28_29: 69293fc5a47SSubhash Jadavani case MMC_VDD_29_30: 69393fc5a47SSubhash Jadavani case MMC_VDD_30_31: 69493fc5a47SSubhash Jadavani case MMC_VDD_31_32: 695b87d8dbfSGirish K S case MMC_VDD_32_33: 696b87d8dbfSGirish K S case MMC_VDD_33_34: 697b87d8dbfSGirish K S case MMC_VDD_34_35: 698b87d8dbfSGirish K S case MMC_VDD_35_36: 699b87d8dbfSGirish K S if (host->ios.clock <= 26000000) 700b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_26_360; 701b87d8dbfSGirish K S else if (host->ios.clock <= 52000000) 702b87d8dbfSGirish K S index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 703b87d8dbfSGirish K S EXT_CSD_PWR_CL_52_360 : 704b87d8dbfSGirish K S EXT_CSD_PWR_CL_DDR_52_360; 705b87d8dbfSGirish K S else if (host->ios.clock <= 200000000) 706b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_200_360; 707b87d8dbfSGirish K S break; 708b87d8dbfSGirish K S default: 709b87d8dbfSGirish K S pr_warning("%s: Voltage range not supported " 710b87d8dbfSGirish K S "for power class.\n", mmc_hostname(host)); 711b87d8dbfSGirish K S return -EINVAL; 712b87d8dbfSGirish K S } 713b87d8dbfSGirish K S 714b87d8dbfSGirish K S pwrclass_val = ext_csd[index]; 715b87d8dbfSGirish K S 716b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 717b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 718b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 719b87d8dbfSGirish K S else 720b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 721b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 722b87d8dbfSGirish K S 723b87d8dbfSGirish K S /* If the power class is different from the default value */ 724b87d8dbfSGirish K S if (pwrclass_val > 0) { 725b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 726b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 727b87d8dbfSGirish K S pwrclass_val, 72871fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 729b87d8dbfSGirish K S } 730b87d8dbfSGirish K S 731b87d8dbfSGirish K S return err; 732b87d8dbfSGirish K S } 733b87d8dbfSGirish K S 734b87d8dbfSGirish K S /* 735a4924c71SGirish K S * Selects the desired buswidth and switch to the HS200 mode 736a4924c71SGirish K S * if bus width set without error 737a4924c71SGirish K S */ 738a4924c71SGirish K S static int mmc_select_hs200(struct mmc_card *card) 739a4924c71SGirish K S { 74010942aa4SSeungwon Jeon int idx, err = -EINVAL; 741a4924c71SGirish K S struct mmc_host *host; 742a4924c71SGirish K S static unsigned ext_csd_bits[] = { 743a4924c71SGirish K S EXT_CSD_BUS_WIDTH_4, 744a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 745a4924c71SGirish K S }; 746a4924c71SGirish K S static unsigned bus_widths[] = { 747a4924c71SGirish K S MMC_BUS_WIDTH_4, 748a4924c71SGirish K S MMC_BUS_WIDTH_8, 749a4924c71SGirish K S }; 750a4924c71SGirish K S 751a4924c71SGirish K S BUG_ON(!card); 752a4924c71SGirish K S 753a4924c71SGirish K S host = card->host; 754a4924c71SGirish K S 755a4924c71SGirish K S if (card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_2V && 756a4924c71SGirish K S host->caps2 & MMC_CAP2_HS200_1_2V_SDR) 75710942aa4SSeungwon Jeon err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120, 0); 75810942aa4SSeungwon Jeon 75910942aa4SSeungwon Jeon if (err && card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_8V && 76010942aa4SSeungwon Jeon host->caps2 & MMC_CAP2_HS200_1_8V_SDR) 76110942aa4SSeungwon Jeon err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180, 0); 762a4924c71SGirish K S 763a4924c71SGirish K S /* If fails try again during next card power cycle */ 764a4924c71SGirish K S if (err) 765a4924c71SGirish K S goto err; 766a4924c71SGirish K S 767a4924c71SGirish K S idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 1 : 0; 768a4924c71SGirish K S 769a4924c71SGirish K S /* 770a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 771a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 772a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 773a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 774a4924c71SGirish K S */ 775a4924c71SGirish K S for (; idx >= 0; idx--) { 776a4924c71SGirish K S 777a4924c71SGirish K S /* 778a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 779a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 780a4924c71SGirish K S * mmc switch command returns error then switch to 781a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 782a4924c71SGirish K S * bus width on the host. 783a4924c71SGirish K S */ 784a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 785a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 786a4924c71SGirish K S ext_csd_bits[idx], 787a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 788a4924c71SGirish K S if (err) 789a4924c71SGirish K S continue; 790a4924c71SGirish K S 791a4924c71SGirish K S mmc_set_bus_width(card->host, bus_widths[idx]); 792a4924c71SGirish K S 793a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 794a4924c71SGirish K S err = mmc_compare_ext_csds(card, bus_widths[idx]); 795a4924c71SGirish K S else 796a4924c71SGirish K S err = mmc_bus_test(card, bus_widths[idx]); 797a4924c71SGirish K S if (!err) 798a4924c71SGirish K S break; 799a4924c71SGirish K S } 800a4924c71SGirish K S 801a4924c71SGirish K S /* switch to HS200 mode if bus width set successfully */ 802a4924c71SGirish K S if (!err) 803a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 804a4924c71SGirish K S EXT_CSD_HS_TIMING, 2, 0); 805a4924c71SGirish K S err: 806a4924c71SGirish K S return err; 807a4924c71SGirish K S } 808a4924c71SGirish K S 809a4924c71SGirish K S /* 8106abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 8116abaa0c9SPierre Ossman * 8128769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 8136abaa0c9SPierre Ossman * we're trying to reinitialise. 8147ea239d9SPierre Ossman */ 8158c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 8166abaa0c9SPierre Ossman struct mmc_card *oldcard) 8177ea239d9SPierre Ossman { 8187ea239d9SPierre Ossman struct mmc_card *card; 81925d5c699SPhilip Rakity int err, ddr = 0; 8207ea239d9SPierre Ossman u32 cid[4]; 8217ea239d9SPierre Ossman unsigned int max_dtr; 822b676f039SPhilip Rakity u32 rocr; 82308ee80ccSPhilip Rakity u8 *ext_csd = NULL; 8247ea239d9SPierre Ossman 8257ea239d9SPierre Ossman BUG_ON(!host); 826d84075c8SPierre Ossman WARN_ON(!host->claimed); 8277ea239d9SPierre Ossman 82844669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 82944669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 83044669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 83144669034SStefan Nilsson XK 8327ea239d9SPierre Ossman /* 8337ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 8347ea239d9SPierre Ossman * need to tell some cards to go back to the idle 8357ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 8367ea239d9SPierre Ossman * respond. 837c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 8387ea239d9SPierre Ossman */ 8397ea239d9SPierre Ossman mmc_go_idle(host); 8407ea239d9SPierre Ossman 8417ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 842b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 84317b0429dSPierre Ossman if (err) 8446abaa0c9SPierre Ossman goto err; 8457ea239d9SPierre Ossman 8467ea239d9SPierre Ossman /* 847af517150SDavid Brownell * For SPI, enable CRC as appropriate. 848af517150SDavid Brownell */ 849af517150SDavid Brownell if (mmc_host_is_spi(host)) { 850af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 851af517150SDavid Brownell if (err) 852af517150SDavid Brownell goto err; 853af517150SDavid Brownell } 854af517150SDavid Brownell 855af517150SDavid Brownell /* 8567ea239d9SPierre Ossman * Fetch CID from card. 8577ea239d9SPierre Ossman */ 858af517150SDavid Brownell if (mmc_host_is_spi(host)) 859af517150SDavid Brownell err = mmc_send_cid(host, cid); 860af517150SDavid Brownell else 8617ea239d9SPierre Ossman err = mmc_all_send_cid(host, cid); 86217b0429dSPierre Ossman if (err) 8637ea239d9SPierre Ossman goto err; 8647ea239d9SPierre Ossman 8656abaa0c9SPierre Ossman if (oldcard) { 866adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 867adf66a0dSPierre Ossman err = -ENOENT; 8686abaa0c9SPierre Ossman goto err; 869adf66a0dSPierre Ossman } 8706abaa0c9SPierre Ossman 8716abaa0c9SPierre Ossman card = oldcard; 8726abaa0c9SPierre Ossman } else { 8737ea239d9SPierre Ossman /* 8747ea239d9SPierre Ossman * Allocate card structure. 8757ea239d9SPierre Ossman */ 87651ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 877adf66a0dSPierre Ossman if (IS_ERR(card)) { 878adf66a0dSPierre Ossman err = PTR_ERR(card); 8797ea239d9SPierre Ossman goto err; 880adf66a0dSPierre Ossman } 8817ea239d9SPierre Ossman 8827ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 8837ea239d9SPierre Ossman card->rca = 1; 8847ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 8856abaa0c9SPierre Ossman } 8867ea239d9SPierre Ossman 8877ea239d9SPierre Ossman /* 888af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 8897ea239d9SPierre Ossman */ 890af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 8917ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 89217b0429dSPierre Ossman if (err) 8937ea239d9SPierre Ossman goto free_card; 8947ea239d9SPierre Ossman 8957ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 896af517150SDavid Brownell } 8977ea239d9SPierre Ossman 8986abaa0c9SPierre Ossman if (!oldcard) { 8997ea239d9SPierre Ossman /* 9007ea239d9SPierre Ossman * Fetch CSD from card. 9017ea239d9SPierre Ossman */ 9027ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 90317b0429dSPierre Ossman if (err) 9047ea239d9SPierre Ossman goto free_card; 9057ea239d9SPierre Ossman 906bd766312SPierre Ossman err = mmc_decode_csd(card); 907adf66a0dSPierre Ossman if (err) 908bd766312SPierre Ossman goto free_card; 909bd766312SPierre Ossman err = mmc_decode_cid(card); 910adf66a0dSPierre Ossman if (err) 911bd766312SPierre Ossman goto free_card; 9126abaa0c9SPierre Ossman } 9137ea239d9SPierre Ossman 9147ea239d9SPierre Ossman /* 91589a73cf5SPierre Ossman * Select card, as all following commands rely on that. 9167ea239d9SPierre Ossman */ 917af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 9187ea239d9SPierre Ossman err = mmc_select_card(card); 91917b0429dSPierre Ossman if (err) 9207ea239d9SPierre Ossman goto free_card; 921af517150SDavid Brownell } 9227ea239d9SPierre Ossman 9236abaa0c9SPierre Ossman if (!oldcard) { 92489a73cf5SPierre Ossman /* 925af517150SDavid Brownell * Fetch and process extended CSD. 92689a73cf5SPierre Ossman */ 92708ee80ccSPhilip Rakity 92808ee80ccSPhilip Rakity err = mmc_get_ext_csd(card, &ext_csd); 92908ee80ccSPhilip Rakity if (err) 93008ee80ccSPhilip Rakity goto free_card; 93108ee80ccSPhilip Rakity err = mmc_read_ext_csd(card, ext_csd); 93217b0429dSPierre Ossman if (err) 9337ea239d9SPierre Ossman goto free_card; 934b676f039SPhilip Rakity 935b676f039SPhilip Rakity /* If doing byte addressing, check if required to do sector 936b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 937b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 938b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 939b676f039SPhilip Rakity */ 940b676f039SPhilip Rakity if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) 941b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 942b676f039SPhilip Rakity 943dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 944dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 9456abaa0c9SPierre Ossman } 9467ea239d9SPierre Ossman 9477ea239d9SPierre Ossman /* 948709de99dSChuanxiao Dong * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF 949709de99dSChuanxiao Dong * bit. This bit will be lost every time after a reset or power off. 950709de99dSChuanxiao Dong */ 95183bb24aaSAdrian Hunter if (card->ext_csd.enhanced_area_en || 95283bb24aaSAdrian Hunter (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { 953709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 954b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 955b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 956709de99dSChuanxiao Dong 957709de99dSChuanxiao Dong if (err && err != -EBADMSG) 958709de99dSChuanxiao Dong goto free_card; 959709de99dSChuanxiao Dong 960709de99dSChuanxiao Dong if (err) { 961709de99dSChuanxiao Dong err = 0; 962709de99dSChuanxiao Dong /* 963709de99dSChuanxiao Dong * Just disable enhanced area off & sz 964709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 965709de99dSChuanxiao Dong * during next time reinit 966709de99dSChuanxiao Dong */ 967709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 968709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 969709de99dSChuanxiao Dong } else { 970709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 971709de99dSChuanxiao Dong /* 972709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 973709de99dSChuanxiao Dong * This will affect the erase size, so 974709de99dSChuanxiao Dong * here need to reset erase size 975709de99dSChuanxiao Dong */ 976709de99dSChuanxiao Dong mmc_set_erase_size(card); 977709de99dSChuanxiao Dong } 978709de99dSChuanxiao Dong } 979709de99dSChuanxiao Dong 980709de99dSChuanxiao Dong /* 98141e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 98241e2a489SPhilip Rakity */ 983371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 984371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 985371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 986371a689fSAndrei Warkentin card->ext_csd.part_config, 987371a689fSAndrei Warkentin card->ext_csd.part_time); 988371a689fSAndrei Warkentin if (err && err != -EBADMSG) 989371a689fSAndrei Warkentin goto free_card; 99041e2a489SPhilip Rakity } 99141e2a489SPhilip Rakity 99241e2a489SPhilip Rakity /* 993bec8726aSGirish K S * If the host supports the power_off_notify capability then 994bec8726aSGirish K S * set the notification byte in the ext_csd register of device 995bec8726aSGirish K S */ 996bec8726aSGirish K S if ((host->caps2 & MMC_CAP2_POWEROFF_NOTIFY) && 997a80f1627SGirish K S (card->ext_csd.rev >= 6)) { 998bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 999bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1000bec8726aSGirish K S EXT_CSD_POWER_ON, 1001bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1002bec8726aSGirish K S if (err && err != -EBADMSG) 1003bec8726aSGirish K S goto free_card; 1004bec8726aSGirish K S 100596a85d54SGirish K S /* 100696a85d54SGirish K S * The err can be -EBADMSG or 0, 100796a85d54SGirish K S * so check for success and update the flag 100896a85d54SGirish K S */ 1009bec8726aSGirish K S if (!err) 1010bec8726aSGirish K S card->poweroff_notify_state = MMC_POWERED_ON; 101196a85d54SGirish K S } 1012bec8726aSGirish K S 1013bec8726aSGirish K S /* 101489a73cf5SPierre Ossman * Activate high speed (if supported) 101589a73cf5SPierre Ossman */ 1016a4924c71SGirish K S if (card->ext_csd.hs_max_dtr != 0) { 1017a4924c71SGirish K S err = 0; 1018a4924c71SGirish K S if (card->ext_csd.hs_max_dtr > 52000000 && 1019a4924c71SGirish K S host->caps2 & MMC_CAP2_HS200) 1020a4924c71SGirish K S err = mmc_select_hs200(card); 1021a4924c71SGirish K S else if (host->caps & MMC_CAP_MMC_HIGHSPEED) 102289a73cf5SPierre Ossman err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10237488e924SGirish K S EXT_CSD_HS_TIMING, 1, 10247488e924SGirish K S card->ext_csd.generic_cmd6_time); 1025a4924c71SGirish K S 1026ef0b27d4SAdrian Hunter if (err && err != -EBADMSG) 102789a73cf5SPierre Ossman goto free_card; 102889a73cf5SPierre Ossman 1029ef0b27d4SAdrian Hunter if (err) { 1030a3c76eb9SGirish K S pr_warning("%s: switch to highspeed failed\n", 1031ef0b27d4SAdrian Hunter mmc_hostname(card->host)); 1032ef0b27d4SAdrian Hunter err = 0; 1033ef0b27d4SAdrian Hunter } else { 1034a4924c71SGirish K S if (card->ext_csd.hs_max_dtr > 52000000 && 1035a4924c71SGirish K S host->caps2 & MMC_CAP2_HS200) { 1036a4924c71SGirish K S mmc_card_set_hs200(card); 1037a4924c71SGirish K S mmc_set_timing(card->host, 1038a4924c71SGirish K S MMC_TIMING_MMC_HS200); 1039a4924c71SGirish K S } else { 104089a73cf5SPierre Ossman mmc_card_set_highspeed(card); 104189a73cf5SPierre Ossman mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 104289a73cf5SPierre Ossman } 1043ef0b27d4SAdrian Hunter } 1044a4924c71SGirish K S } 104589a73cf5SPierre Ossman 104689a73cf5SPierre Ossman /* 10477ea239d9SPierre Ossman * Compute bus speed. 10487ea239d9SPierre Ossman */ 10497ea239d9SPierre Ossman max_dtr = (unsigned int)-1; 10507ea239d9SPierre Ossman 1051a4924c71SGirish K S if (mmc_card_highspeed(card) || mmc_card_hs200(card)) { 10527ea239d9SPierre Ossman if (max_dtr > card->ext_csd.hs_max_dtr) 10537ea239d9SPierre Ossman max_dtr = card->ext_csd.hs_max_dtr; 10547ea239d9SPierre Ossman } else if (max_dtr > card->csd.max_dtr) { 10557ea239d9SPierre Ossman max_dtr = card->csd.max_dtr; 10567ea239d9SPierre Ossman } 10577ea239d9SPierre Ossman 10587ea239d9SPierre Ossman mmc_set_clock(host, max_dtr); 10597ea239d9SPierre Ossman 106089a73cf5SPierre Ossman /* 10610f8d8ea6SAdrian Hunter * Indicate DDR mode (if supported). 1062dfc13e84SHanumath Prasad */ 1063dfc13e84SHanumath Prasad if (mmc_card_highspeed(card)) { 1064dfc13e84SHanumath Prasad if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) 10654c4cb171SPhilip Rakity && ((host->caps & (MMC_CAP_1_8V_DDR | 10664c4cb171SPhilip Rakity MMC_CAP_UHS_DDR50)) 10674c4cb171SPhilip Rakity == (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50))) 106849e3b5a4SAdrian Hunter ddr = MMC_1_8V_DDR_MODE; 1069dfc13e84SHanumath Prasad else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) 10704c4cb171SPhilip Rakity && ((host->caps & (MMC_CAP_1_2V_DDR | 10714c4cb171SPhilip Rakity MMC_CAP_UHS_DDR50)) 10724c4cb171SPhilip Rakity == (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50))) 107349e3b5a4SAdrian Hunter ddr = MMC_1_2V_DDR_MODE; 1074dfc13e84SHanumath Prasad } 1075dfc13e84SHanumath Prasad 1076dfc13e84SHanumath Prasad /* 1077a4924c71SGirish K S * Indicate HS200 SDR mode (if supported). 1078a4924c71SGirish K S */ 1079a4924c71SGirish K S if (mmc_card_hs200(card)) { 1080a4924c71SGirish K S u32 ext_csd_bits; 1081a4924c71SGirish K S u32 bus_width = card->host->ios.bus_width; 1082a4924c71SGirish K S 1083a4924c71SGirish K S /* 1084a4924c71SGirish K S * For devices supporting HS200 mode, the bus width has 1085a4924c71SGirish K S * to be set before executing the tuning function. If 1086a4924c71SGirish K S * set before tuning, then device will respond with CRC 1087a4924c71SGirish K S * errors for responses on CMD line. So for HS200 the 1088a4924c71SGirish K S * sequence will be 1089a4924c71SGirish K S * 1. set bus width 4bit / 8 bit (1 bit not supported) 1090a4924c71SGirish K S * 2. switch to HS200 mode 1091a4924c71SGirish K S * 3. set the clock to > 52Mhz <=200MHz and 1092a4924c71SGirish K S * 4. execute tuning for HS200 1093a4924c71SGirish K S */ 1094a4924c71SGirish K S if ((host->caps2 & MMC_CAP2_HS200) && 109552d0974eSSubhash Jadavani card->host->ops->execute_tuning) { 109652d0974eSSubhash Jadavani mmc_host_clk_hold(card->host); 1097a4924c71SGirish K S err = card->host->ops->execute_tuning(card->host, 1098a4924c71SGirish K S MMC_SEND_TUNING_BLOCK_HS200); 109952d0974eSSubhash Jadavani mmc_host_clk_release(card->host); 110052d0974eSSubhash Jadavani } 1101a4924c71SGirish K S if (err) { 1102a4924c71SGirish K S pr_warning("%s: tuning execution failed\n", 1103a4924c71SGirish K S mmc_hostname(card->host)); 1104a4924c71SGirish K S goto err; 1105a4924c71SGirish K S } 1106a4924c71SGirish K S 1107a4924c71SGirish K S ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 1108a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 1109a4924c71SGirish K S err = mmc_select_powerclass(card, ext_csd_bits, ext_csd); 111093fc5a47SSubhash Jadavani if (err) 111187f761b6SVenkatraman S pr_warning("%s: power class selection to bus width %d" 111287f761b6SVenkatraman S " failed\n", mmc_hostname(card->host), 111387f761b6SVenkatraman S 1 << bus_width); 1114a4924c71SGirish K S } 1115a4924c71SGirish K S 1116a4924c71SGirish K S /* 11170f8d8ea6SAdrian Hunter * Activate wide bus and DDR (if supported). 111889a73cf5SPierre Ossman */ 1119a4924c71SGirish K S if (!mmc_card_hs200(card) && 11207488e924SGirish K S (card->csd.mmca_vsn >= CSD_SPEC_VER_4) && 1121b30f8af3SJarkko Lavinen (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { 112222113efdSAries Lee static unsigned ext_csd_bits[][2] = { 112322113efdSAries Lee { EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 }, 112422113efdSAries Lee { EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 }, 112522113efdSAries Lee { EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 }, 112622113efdSAries Lee }; 112722113efdSAries Lee static unsigned bus_widths[] = { 112822113efdSAries Lee MMC_BUS_WIDTH_8, 112922113efdSAries Lee MMC_BUS_WIDTH_4, 113022113efdSAries Lee MMC_BUS_WIDTH_1 113122113efdSAries Lee }; 113222113efdSAries Lee unsigned idx, bus_width = 0; 1133b30f8af3SJarkko Lavinen 113422113efdSAries Lee if (host->caps & MMC_CAP_8_BIT_DATA) 113522113efdSAries Lee idx = 0; 1136dfc13e84SHanumath Prasad else 113722113efdSAries Lee idx = 1; 113822113efdSAries Lee for (; idx < ARRAY_SIZE(bus_widths); idx++) { 113922113efdSAries Lee bus_width = bus_widths[idx]; 114022113efdSAries Lee if (bus_width == MMC_BUS_WIDTH_1) 114122113efdSAries Lee ddr = 0; /* no DDR for 1-bit width */ 1142b87d8dbfSGirish K S err = mmc_select_powerclass(card, ext_csd_bits[idx][0], 1143b87d8dbfSGirish K S ext_csd); 1144b87d8dbfSGirish K S if (err) 114587f761b6SVenkatraman S pr_warning("%s: power class selection to " 114687f761b6SVenkatraman S "bus width %d failed\n", 114787f761b6SVenkatraman S mmc_hostname(card->host), 114887f761b6SVenkatraman S 1 << bus_width); 1149b87d8dbfSGirish K S 115022113efdSAries Lee err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 115122113efdSAries Lee EXT_CSD_BUS_WIDTH, 1152d3a8d95dSAndrei Warkentin ext_csd_bits[idx][0], 1153b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 115422113efdSAries Lee if (!err) { 11554c4cb171SPhilip Rakity mmc_set_bus_width(card->host, bus_width); 115608ee80ccSPhilip Rakity 115722113efdSAries Lee /* 115822113efdSAries Lee * If controller can't handle bus width test, 115908ee80ccSPhilip Rakity * compare ext_csd previously read in 1 bit mode 116008ee80ccSPhilip Rakity * against ext_csd at new bus width 116122113efdSAries Lee */ 116222113efdSAries Lee if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 116308ee80ccSPhilip Rakity err = mmc_compare_ext_csds(card, 116408ee80ccSPhilip Rakity bus_width); 116508ee80ccSPhilip Rakity else 116622113efdSAries Lee err = mmc_bus_test(card, bus_width); 116722113efdSAries Lee if (!err) 116822113efdSAries Lee break; 116922113efdSAries Lee } 1170b30f8af3SJarkko Lavinen } 1171b30f8af3SJarkko Lavinen 117222113efdSAries Lee if (!err && ddr) { 1173b87d8dbfSGirish K S err = mmc_select_powerclass(card, ext_csd_bits[idx][1], 1174b87d8dbfSGirish K S ext_csd); 1175b87d8dbfSGirish K S if (err) 117687f761b6SVenkatraman S pr_warning("%s: power class selection to " 117787f761b6SVenkatraman S "bus width %d ddr %d failed\n", 117887f761b6SVenkatraman S mmc_hostname(card->host), 117987f761b6SVenkatraman S 1 << bus_width, ddr); 1180b87d8dbfSGirish K S 118189a73cf5SPierre Ossman err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 118222113efdSAries Lee EXT_CSD_BUS_WIDTH, 1183d3a8d95dSAndrei Warkentin ext_csd_bits[idx][1], 1184b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 118522113efdSAries Lee } 1186ef0b27d4SAdrian Hunter if (err) { 1187a3c76eb9SGirish K S pr_warning("%s: switch to bus width %d ddr %d " 1188ef0b27d4SAdrian Hunter "failed\n", mmc_hostname(card->host), 11890f8d8ea6SAdrian Hunter 1 << bus_width, ddr); 119022113efdSAries Lee goto free_card; 119122113efdSAries Lee } else if (ddr) { 11924c4cb171SPhilip Rakity /* 11934c4cb171SPhilip Rakity * eMMC cards can support 3.3V to 1.2V i/o (vccq) 11944c4cb171SPhilip Rakity * signaling. 11954c4cb171SPhilip Rakity * 11964c4cb171SPhilip Rakity * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 11974c4cb171SPhilip Rakity * 11984c4cb171SPhilip Rakity * 1.8V vccq at 3.3V core voltage (vcc) is not required 11994c4cb171SPhilip Rakity * in the JEDEC spec for DDR. 12004c4cb171SPhilip Rakity * 12014c4cb171SPhilip Rakity * Do not force change in vccq since we are obviously 12024c4cb171SPhilip Rakity * working and no change to vccq is needed. 12034c4cb171SPhilip Rakity * 12044c4cb171SPhilip Rakity * WARNING: eMMC rules are NOT the same as SD DDR 12054c4cb171SPhilip Rakity */ 1206913047e9SGirish K S if (ddr == MMC_1_2V_DDR_MODE) { 12074c4cb171SPhilip Rakity err = mmc_set_signal_voltage(host, 12084c4cb171SPhilip Rakity MMC_SIGNAL_VOLTAGE_120, 0); 12094c4cb171SPhilip Rakity if (err) 12104c4cb171SPhilip Rakity goto err; 12114c4cb171SPhilip Rakity } 12120f8d8ea6SAdrian Hunter mmc_card_set_ddr_mode(card); 12134c4cb171SPhilip Rakity mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50); 12144c4cb171SPhilip Rakity mmc_set_bus_width(card->host, bus_width); 121589a73cf5SPierre Ossman } 1216ef0b27d4SAdrian Hunter } 121789a73cf5SPierre Ossman 1218881d1c25SSeungwon Jeon /* 121952d0974eSSubhash Jadavani * Enable HPI feature (if supported) 122052d0974eSSubhash Jadavani */ 122152d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 122252d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 122352d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 122452d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 122552d0974eSSubhash Jadavani if (err && err != -EBADMSG) 122652d0974eSSubhash Jadavani goto free_card; 122752d0974eSSubhash Jadavani if (err) { 122852d0974eSSubhash Jadavani pr_warning("%s: Enabling HPI failed\n", 122952d0974eSSubhash Jadavani mmc_hostname(card->host)); 123052d0974eSSubhash Jadavani err = 0; 123152d0974eSSubhash Jadavani } else 123252d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 123352d0974eSSubhash Jadavani } 123452d0974eSSubhash Jadavani 123552d0974eSSubhash Jadavani /* 1236881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1237881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1238881d1c25SSeungwon Jeon */ 1239881d1c25SSeungwon Jeon if ((host->caps2 & MMC_CAP2_CACHE_CTRL) && 1240881d1c25SSeungwon Jeon card->ext_csd.cache_size > 0) { 1241881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 12428bc0678bSSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 12438bc0678bSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1244881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1245881d1c25SSeungwon Jeon goto free_card; 1246881d1c25SSeungwon Jeon 1247881d1c25SSeungwon Jeon /* 1248881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1249881d1c25SSeungwon Jeon */ 12508bc0678bSSeungwon Jeon if (err) { 12518bc0678bSSeungwon Jeon pr_warning("%s: Cache is supported, " 12528bc0678bSSeungwon Jeon "but failed to turn on (%d)\n", 12538bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 12548bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 12558bc0678bSSeungwon Jeon err = 0; 12568bc0678bSSeungwon Jeon } else { 12578bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 12588bc0678bSSeungwon Jeon } 1259881d1c25SSeungwon Jeon } 1260881d1c25SSeungwon Jeon 12616abaa0c9SPierre Ossman if (!oldcard) 12627ea239d9SPierre Ossman host->card = card; 12637ea239d9SPierre Ossman 126408ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 126517b0429dSPierre Ossman return 0; 12666abaa0c9SPierre Ossman 12676abaa0c9SPierre Ossman free_card: 12686abaa0c9SPierre Ossman if (!oldcard) 12696abaa0c9SPierre Ossman mmc_remove_card(card); 12706abaa0c9SPierre Ossman err: 127108ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 12726abaa0c9SPierre Ossman 1273adf66a0dSPierre Ossman return err; 12746abaa0c9SPierre Ossman } 12756abaa0c9SPierre Ossman 12766abaa0c9SPierre Ossman /* 12776abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 12786abaa0c9SPierre Ossman */ 12796abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 12806abaa0c9SPierre Ossman { 12816abaa0c9SPierre Ossman BUG_ON(!host); 12826abaa0c9SPierre Ossman BUG_ON(!host->card); 12836abaa0c9SPierre Ossman 12846abaa0c9SPierre Ossman mmc_remove_card(host->card); 12856abaa0c9SPierre Ossman host->card = NULL; 12866abaa0c9SPierre Ossman } 12876abaa0c9SPierre Ossman 12886abaa0c9SPierre Ossman /* 1289d3049504SAdrian Hunter * Card detection - card is alive. 1290d3049504SAdrian Hunter */ 1291d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1292d3049504SAdrian Hunter { 1293d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1294d3049504SAdrian Hunter } 1295d3049504SAdrian Hunter 1296d3049504SAdrian Hunter /* 12976abaa0c9SPierre Ossman * Card detection callback from host. 12986abaa0c9SPierre Ossman */ 12996abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 13006abaa0c9SPierre Ossman { 13016abaa0c9SPierre Ossman int err; 13026abaa0c9SPierre Ossman 13036abaa0c9SPierre Ossman BUG_ON(!host); 13046abaa0c9SPierre Ossman BUG_ON(!host->card); 13056abaa0c9SPierre Ossman 13066abaa0c9SPierre Ossman mmc_claim_host(host); 13076abaa0c9SPierre Ossman 13086abaa0c9SPierre Ossman /* 13096abaa0c9SPierre Ossman * Just check if our card has been removed. 13106abaa0c9SPierre Ossman */ 1311d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 13126abaa0c9SPierre Ossman 13137ea239d9SPierre Ossman mmc_release_host(host); 13147ea239d9SPierre Ossman 131517b0429dSPierre Ossman if (err) { 13164101c16aSPierre Ossman mmc_remove(host); 13176abaa0c9SPierre Ossman 13186abaa0c9SPierre Ossman mmc_claim_host(host); 13196abaa0c9SPierre Ossman mmc_detach_bus(host); 13207f7e4129SUlf Hansson mmc_power_off(host); 13216abaa0c9SPierre Ossman mmc_release_host(host); 13226abaa0c9SPierre Ossman } 13236abaa0c9SPierre Ossman } 13246abaa0c9SPierre Ossman 13256abaa0c9SPierre Ossman /* 13266abaa0c9SPierre Ossman * Suspend callback from host. 13276abaa0c9SPierre Ossman */ 132895cdfb72SNicolas Pitre static int mmc_suspend(struct mmc_host *host) 13296abaa0c9SPierre Ossman { 1330c3805467SBalaji T K int err = 0; 1331c3805467SBalaji T K 13326abaa0c9SPierre Ossman BUG_ON(!host); 13336abaa0c9SPierre Ossman BUG_ON(!host->card); 13346abaa0c9SPierre Ossman 13356abaa0c9SPierre Ossman mmc_claim_host(host); 13363e73c36bSGirish K S if (mmc_card_can_sleep(host)) { 1337c3805467SBalaji T K err = mmc_card_sleep(host); 13383e73c36bSGirish K S if (!err) 13393e73c36bSGirish K S mmc_card_set_sleep(host->card); 13403e73c36bSGirish K S } else if (!mmc_host_is_spi(host)) 134185e727edSJaehoon Chung err = mmc_deselect_cards(host); 13423e73c36bSGirish K S host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); 13436abaa0c9SPierre Ossman mmc_release_host(host); 134495cdfb72SNicolas Pitre 1345c3805467SBalaji T K return err; 13466abaa0c9SPierre Ossman } 13476abaa0c9SPierre Ossman 13486abaa0c9SPierre Ossman /* 13496abaa0c9SPierre Ossman * Resume callback from host. 13506abaa0c9SPierre Ossman * 13516abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 13526abaa0c9SPierre Ossman * and, if so, restore all state to it. 13536abaa0c9SPierre Ossman */ 135495cdfb72SNicolas Pitre static int mmc_resume(struct mmc_host *host) 13556abaa0c9SPierre Ossman { 13566abaa0c9SPierre Ossman int err; 13576abaa0c9SPierre Ossman 13586abaa0c9SPierre Ossman BUG_ON(!host); 13596abaa0c9SPierre Ossman BUG_ON(!host->card); 13606abaa0c9SPierre Ossman 13616abaa0c9SPierre Ossman mmc_claim_host(host); 13623e73c36bSGirish K S if (mmc_card_is_sleep(host->card)) { 13633e73c36bSGirish K S err = mmc_card_awake(host); 13643e73c36bSGirish K S mmc_card_clr_sleep(host->card); 13653e73c36bSGirish K S } else 13668c75deaeSPierre Ossman err = mmc_init_card(host, host->ocr, host->card); 13672986d0bfSPierre Ossman mmc_release_host(host); 13682986d0bfSPierre Ossman 136995cdfb72SNicolas Pitre return err; 13706abaa0c9SPierre Ossman } 13716abaa0c9SPierre Ossman 137212ae637fSOhad Ben-Cohen static int mmc_power_restore(struct mmc_host *host) 1373eae1aeeeSAdrian Hunter { 137412ae637fSOhad Ben-Cohen int ret; 137512ae637fSOhad Ben-Cohen 13763e73c36bSGirish K S host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); 13773e73c36bSGirish K S mmc_card_clr_sleep(host->card); 1378eae1aeeeSAdrian Hunter mmc_claim_host(host); 137912ae637fSOhad Ben-Cohen ret = mmc_init_card(host, host->ocr, host->card); 1380eae1aeeeSAdrian Hunter mmc_release_host(host); 138112ae637fSOhad Ben-Cohen 138212ae637fSOhad Ben-Cohen return ret; 1383eae1aeeeSAdrian Hunter } 1384eae1aeeeSAdrian Hunter 1385b1ebe384SJarkko Lavinen static int mmc_sleep(struct mmc_host *host) 1386b1ebe384SJarkko Lavinen { 1387b1ebe384SJarkko Lavinen struct mmc_card *card = host->card; 1388b1ebe384SJarkko Lavinen int err = -ENOSYS; 1389b1ebe384SJarkko Lavinen 1390b1ebe384SJarkko Lavinen if (card && card->ext_csd.rev >= 3) { 1391b1ebe384SJarkko Lavinen err = mmc_card_sleepawake(host, 1); 1392b1ebe384SJarkko Lavinen if (err < 0) 1393b1ebe384SJarkko Lavinen pr_debug("%s: Error %d while putting card into sleep", 1394b1ebe384SJarkko Lavinen mmc_hostname(host), err); 1395b1ebe384SJarkko Lavinen } 1396b1ebe384SJarkko Lavinen 1397b1ebe384SJarkko Lavinen return err; 1398b1ebe384SJarkko Lavinen } 1399b1ebe384SJarkko Lavinen 1400b1ebe384SJarkko Lavinen static int mmc_awake(struct mmc_host *host) 1401b1ebe384SJarkko Lavinen { 1402b1ebe384SJarkko Lavinen struct mmc_card *card = host->card; 1403b1ebe384SJarkko Lavinen int err = -ENOSYS; 1404b1ebe384SJarkko Lavinen 1405b1ebe384SJarkko Lavinen if (card && card->ext_csd.rev >= 3) { 1406b1ebe384SJarkko Lavinen err = mmc_card_sleepawake(host, 0); 1407b1ebe384SJarkko Lavinen if (err < 0) 1408b1ebe384SJarkko Lavinen pr_debug("%s: Error %d while awaking sleeping card", 1409b1ebe384SJarkko Lavinen mmc_hostname(host), err); 1410b1ebe384SJarkko Lavinen } 1411b1ebe384SJarkko Lavinen 1412b1ebe384SJarkko Lavinen return err; 1413b1ebe384SJarkko Lavinen } 1414b1ebe384SJarkko Lavinen 14159feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 1416b1ebe384SJarkko Lavinen .awake = mmc_awake, 1417b1ebe384SJarkko Lavinen .sleep = mmc_sleep, 14189feae246SAdrian Hunter .remove = mmc_remove, 14199feae246SAdrian Hunter .detect = mmc_detect, 14209feae246SAdrian Hunter .suspend = NULL, 14219feae246SAdrian Hunter .resume = NULL, 1422eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1423d3049504SAdrian Hunter .alive = mmc_alive, 14249feae246SAdrian Hunter }; 14259feae246SAdrian Hunter 14269feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops_unsafe = { 1427b1ebe384SJarkko Lavinen .awake = mmc_awake, 1428b1ebe384SJarkko Lavinen .sleep = mmc_sleep, 14299feae246SAdrian Hunter .remove = mmc_remove, 14309feae246SAdrian Hunter .detect = mmc_detect, 14319feae246SAdrian Hunter .suspend = mmc_suspend, 14329feae246SAdrian Hunter .resume = mmc_resume, 1433eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1434d3049504SAdrian Hunter .alive = mmc_alive, 14359feae246SAdrian Hunter }; 14369feae246SAdrian Hunter 14379feae246SAdrian Hunter static void mmc_attach_bus_ops(struct mmc_host *host) 14389feae246SAdrian Hunter { 14399feae246SAdrian Hunter const struct mmc_bus_ops *bus_ops; 14409feae246SAdrian Hunter 144171d7d3d1SMatt Fleming if (!mmc_card_is_removable(host)) 14429feae246SAdrian Hunter bus_ops = &mmc_ops_unsafe; 14439feae246SAdrian Hunter else 14449feae246SAdrian Hunter bus_ops = &mmc_ops; 14459feae246SAdrian Hunter mmc_attach_bus(host, bus_ops); 14469feae246SAdrian Hunter } 14479feae246SAdrian Hunter 14486abaa0c9SPierre Ossman /* 14496abaa0c9SPierre Ossman * Starting point for MMC card init. 14506abaa0c9SPierre Ossman */ 1451807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 14526abaa0c9SPierre Ossman { 14536abaa0c9SPierre Ossman int err; 1454807e8e40SAndy Ross u32 ocr; 14556abaa0c9SPierre Ossman 14566abaa0c9SPierre Ossman BUG_ON(!host); 1457d84075c8SPierre Ossman WARN_ON(!host->claimed); 14586abaa0c9SPierre Ossman 145944669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 146044669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 146144669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 146244669034SStefan Nilsson XK 1463807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 1464807e8e40SAndy Ross if (err) 1465807e8e40SAndy Ross return err; 1466807e8e40SAndy Ross 14679feae246SAdrian Hunter mmc_attach_bus_ops(host); 14688f230f45STakashi Iwai if (host->ocr_avail_mmc) 14698f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 14706abaa0c9SPierre Ossman 14716abaa0c9SPierre Ossman /* 1472af517150SDavid Brownell * We need to get OCR a different way for SPI. 1473af517150SDavid Brownell */ 1474af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1475af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 1476af517150SDavid Brownell if (err) 1477af517150SDavid Brownell goto err; 1478af517150SDavid Brownell } 1479af517150SDavid Brownell 1480af517150SDavid Brownell /* 14816abaa0c9SPierre Ossman * Sanity check the voltages that the card claims to 14826abaa0c9SPierre Ossman * support. 14836abaa0c9SPierre Ossman */ 14846abaa0c9SPierre Ossman if (ocr & 0x7F) { 1485a3c76eb9SGirish K S pr_warning("%s: card claims to support voltages " 14866abaa0c9SPierre Ossman "below the defined range. These will be ignored.\n", 14876abaa0c9SPierre Ossman mmc_hostname(host)); 14886abaa0c9SPierre Ossman ocr &= ~0x7F; 14896abaa0c9SPierre Ossman } 14906abaa0c9SPierre Ossman 14916abaa0c9SPierre Ossman host->ocr = mmc_select_voltage(host, ocr); 14926abaa0c9SPierre Ossman 14936abaa0c9SPierre Ossman /* 14946abaa0c9SPierre Ossman * Can we support the voltage of the card? 14956abaa0c9SPierre Ossman */ 1496109b5bedSPierre Ossman if (!host->ocr) { 1497109b5bedSPierre Ossman err = -EINVAL; 14986abaa0c9SPierre Ossman goto err; 1499109b5bedSPierre Ossman } 15006abaa0c9SPierre Ossman 15016abaa0c9SPierre Ossman /* 15026abaa0c9SPierre Ossman * Detect and init the card. 15036abaa0c9SPierre Ossman */ 15048c75deaeSPierre Ossman err = mmc_init_card(host, host->ocr, NULL); 150517b0429dSPierre Ossman if (err) 15066abaa0c9SPierre Ossman goto err; 15076abaa0c9SPierre Ossman 15086abaa0c9SPierre Ossman mmc_release_host(host); 15094101c16aSPierre Ossman err = mmc_add_card(host->card); 1510807e8e40SAndy Ross mmc_claim_host(host); 15117ea239d9SPierre Ossman if (err) 15122986d0bfSPierre Ossman goto remove_card; 15137ea239d9SPierre Ossman 15147ea239d9SPierre Ossman return 0; 15157ea239d9SPierre Ossman 15162986d0bfSPierre Ossman remove_card: 1517807e8e40SAndy Ross mmc_release_host(host); 15186abaa0c9SPierre Ossman mmc_remove_card(host->card); 15192986d0bfSPierre Ossman mmc_claim_host(host); 1520807e8e40SAndy Ross host->card = NULL; 15217ea239d9SPierre Ossman err: 15227ea239d9SPierre Ossman mmc_detach_bus(host); 15237ea239d9SPierre Ossman 1524a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 1525109b5bedSPierre Ossman mmc_hostname(host), err); 1526109b5bedSPierre Ossman 1527adf66a0dSPierre Ossman return err; 15287ea239d9SPierre Ossman } 1529