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) { 466eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 467eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { 468eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 469eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 470eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 471eb0d8f13SJaehoon Chung else 472eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 473eb0d8f13SJaehoon Chung /* 474eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 475eb0d8f13SJaehoon Chung * a command interrupted by HPI 476eb0d8f13SJaehoon Chung */ 477eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 478eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 479eb0d8f13SJaehoon Chung } 480eb0d8f13SJaehoon Chung 481f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 482b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 483b2499518SAdrian Hunter } 484f4c5522bSAndrei Warkentin 4855238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 486dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 487dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 488dfe86cbaSAdrian Hunter else 489dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 490dfe86cbaSAdrian Hunter 491336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 492bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 493336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 494336c716aSSeungwon Jeon 495b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 496b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 497bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 498bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 499b23cf0bdSSeungwon Jeon 500881d1c25SSeungwon Jeon card->ext_csd.cache_size = 501881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 502881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 503881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 504881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 5054265900eSSaugata Das 5064265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 5074265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 5084265900eSSaugata Das else 5094265900eSSaugata Das card->ext_csd.data_sector_size = 512; 5104265900eSSaugata Das 5114265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 5124265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 5134265900eSSaugata Das card->ext_csd.data_tag_unit_size = 5144265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 5154265900eSSaugata Das (card->ext_csd.data_sector_size); 5164265900eSSaugata Das } else { 5174265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 5184265900eSSaugata Das } 519336c716aSSeungwon Jeon } 520881d1c25SSeungwon Jeon 5217ea239d9SPierre Ossman out: 52208ee80ccSPhilip Rakity return err; 52308ee80ccSPhilip Rakity } 5247ea239d9SPierre Ossman 52508ee80ccSPhilip Rakity static inline void mmc_free_ext_csd(u8 *ext_csd) 52608ee80ccSPhilip Rakity { 52708ee80ccSPhilip Rakity kfree(ext_csd); 52808ee80ccSPhilip Rakity } 52908ee80ccSPhilip Rakity 53008ee80ccSPhilip Rakity 531f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 53208ee80ccSPhilip Rakity { 53308ee80ccSPhilip Rakity u8 *bw_ext_csd; 53408ee80ccSPhilip Rakity int err; 53508ee80ccSPhilip Rakity 536f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 537f39b2dd9SPhilip Rakity return 0; 53808ee80ccSPhilip Rakity 539f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 540f39b2dd9SPhilip Rakity 541f39b2dd9SPhilip Rakity if (err || bw_ext_csd == NULL) { 54208ee80ccSPhilip Rakity if (bus_width != MMC_BUS_WIDTH_1) 54308ee80ccSPhilip Rakity err = -EINVAL; 54408ee80ccSPhilip Rakity goto out; 54508ee80ccSPhilip Rakity } 54608ee80ccSPhilip Rakity 54708ee80ccSPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 54808ee80ccSPhilip Rakity goto out; 54908ee80ccSPhilip Rakity 55008ee80ccSPhilip Rakity /* only compare read only fields */ 551dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 55208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 553f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 55408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 555f39b2dd9SPhilip Rakity (card->ext_csd.rev == 55608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 557f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 55808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 559f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 56008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 561f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 56208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 563f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 56408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 565f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 56608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 567f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 56808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 569f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 57008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 571f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 57208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 573f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 57408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 575f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 57608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 577f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 578f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 579f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 580f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 581f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 582f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 583f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 584f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 3])); 58508ee80ccSPhilip Rakity if (err) 58608ee80ccSPhilip Rakity err = -EINVAL; 58708ee80ccSPhilip Rakity 58808ee80ccSPhilip Rakity out: 58908ee80ccSPhilip Rakity mmc_free_ext_csd(bw_ext_csd); 5907ea239d9SPierre Ossman return err; 5917ea239d9SPierre Ossman } 5927ea239d9SPierre Ossman 59351ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 59451ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 59551ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 59651ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 59751ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 598dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 599dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 60051ec92e2SPierre Ossman MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); 60151ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 60251ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 60351ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 60451ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 60551ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 606709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 607709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 608709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 60951ec92e2SPierre Ossman 61051ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 61151ec92e2SPierre Ossman &dev_attr_cid.attr, 61251ec92e2SPierre Ossman &dev_attr_csd.attr, 61351ec92e2SPierre Ossman &dev_attr_date.attr, 614dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 615dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 61651ec92e2SPierre Ossman &dev_attr_fwrev.attr, 61751ec92e2SPierre Ossman &dev_attr_hwrev.attr, 61851ec92e2SPierre Ossman &dev_attr_manfid.attr, 61951ec92e2SPierre Ossman &dev_attr_name.attr, 62051ec92e2SPierre Ossman &dev_attr_oemid.attr, 62151ec92e2SPierre Ossman &dev_attr_serial.attr, 622709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 623709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 62451ec92e2SPierre Ossman NULL, 62551ec92e2SPierre Ossman }; 62651ec92e2SPierre Ossman 62751ec92e2SPierre Ossman static struct attribute_group mmc_std_attr_group = { 62851ec92e2SPierre Ossman .attrs = mmc_std_attrs, 62951ec92e2SPierre Ossman }; 63051ec92e2SPierre Ossman 631a4dbd674SDavid Brownell static const struct attribute_group *mmc_attr_groups[] = { 63251ec92e2SPierre Ossman &mmc_std_attr_group, 63351ec92e2SPierre Ossman NULL, 63451ec92e2SPierre Ossman }; 63551ec92e2SPierre Ossman 63651ec92e2SPierre Ossman static struct device_type mmc_type = { 63751ec92e2SPierre Ossman .groups = mmc_attr_groups, 63851ec92e2SPierre Ossman }; 63951ec92e2SPierre Ossman 6407ea239d9SPierre Ossman /* 641b87d8dbfSGirish K S * Select the PowerClass for the current bus width 642b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 643b87d8dbfSGirish K S * extended CSD register, select it by executing the 644b87d8dbfSGirish K S * mmc_switch command. 645b87d8dbfSGirish K S */ 646b87d8dbfSGirish K S static int mmc_select_powerclass(struct mmc_card *card, 647b87d8dbfSGirish K S unsigned int bus_width, u8 *ext_csd) 648b87d8dbfSGirish K S { 649b87d8dbfSGirish K S int err = 0; 650b87d8dbfSGirish K S unsigned int pwrclass_val; 651b87d8dbfSGirish K S unsigned int index = 0; 652b87d8dbfSGirish K S struct mmc_host *host; 653b87d8dbfSGirish K S 654b87d8dbfSGirish K S BUG_ON(!card); 655b87d8dbfSGirish K S 656b87d8dbfSGirish K S host = card->host; 657b87d8dbfSGirish K S BUG_ON(!host); 658b87d8dbfSGirish K S 659b87d8dbfSGirish K S if (ext_csd == NULL) 660b87d8dbfSGirish K S return 0; 661b87d8dbfSGirish K S 662b87d8dbfSGirish K S /* Power class selection is supported for versions >= 4.0 */ 663b87d8dbfSGirish K S if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 664b87d8dbfSGirish K S return 0; 665b87d8dbfSGirish K S 666b87d8dbfSGirish K S /* Power class values are defined only for 4/8 bit bus */ 667b87d8dbfSGirish K S if (bus_width == EXT_CSD_BUS_WIDTH_1) 668b87d8dbfSGirish K S return 0; 669b87d8dbfSGirish K S 670b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 671b87d8dbfSGirish K S case MMC_VDD_165_195: 672b87d8dbfSGirish K S if (host->ios.clock <= 26000000) 673b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_26_195; 674b87d8dbfSGirish K S else if (host->ios.clock <= 52000000) 675b87d8dbfSGirish K S index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 676b87d8dbfSGirish K S EXT_CSD_PWR_CL_52_195 : 677b87d8dbfSGirish K S EXT_CSD_PWR_CL_DDR_52_195; 678b87d8dbfSGirish K S else if (host->ios.clock <= 200000000) 679b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_200_195; 680b87d8dbfSGirish K S break; 68193fc5a47SSubhash Jadavani case MMC_VDD_27_28: 68293fc5a47SSubhash Jadavani case MMC_VDD_28_29: 68393fc5a47SSubhash Jadavani case MMC_VDD_29_30: 68493fc5a47SSubhash Jadavani case MMC_VDD_30_31: 68593fc5a47SSubhash Jadavani case MMC_VDD_31_32: 686b87d8dbfSGirish K S case MMC_VDD_32_33: 687b87d8dbfSGirish K S case MMC_VDD_33_34: 688b87d8dbfSGirish K S case MMC_VDD_34_35: 689b87d8dbfSGirish K S case MMC_VDD_35_36: 690b87d8dbfSGirish K S if (host->ios.clock <= 26000000) 691b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_26_360; 692b87d8dbfSGirish K S else if (host->ios.clock <= 52000000) 693b87d8dbfSGirish K S index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 694b87d8dbfSGirish K S EXT_CSD_PWR_CL_52_360 : 695b87d8dbfSGirish K S EXT_CSD_PWR_CL_DDR_52_360; 696b87d8dbfSGirish K S else if (host->ios.clock <= 200000000) 697b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_200_360; 698b87d8dbfSGirish K S break; 699b87d8dbfSGirish K S default: 700b87d8dbfSGirish K S pr_warning("%s: Voltage range not supported " 701b87d8dbfSGirish K S "for power class.\n", mmc_hostname(host)); 702b87d8dbfSGirish K S return -EINVAL; 703b87d8dbfSGirish K S } 704b87d8dbfSGirish K S 705b87d8dbfSGirish K S pwrclass_val = ext_csd[index]; 706b87d8dbfSGirish K S 707b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 708b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 709b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 710b87d8dbfSGirish K S else 711b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 712b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 713b87d8dbfSGirish K S 714b87d8dbfSGirish K S /* If the power class is different from the default value */ 715b87d8dbfSGirish K S if (pwrclass_val > 0) { 716b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 717b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 718b87d8dbfSGirish K S pwrclass_val, 71971fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 720b87d8dbfSGirish K S } 721b87d8dbfSGirish K S 722b87d8dbfSGirish K S return err; 723b87d8dbfSGirish K S } 724b87d8dbfSGirish K S 725b87d8dbfSGirish K S /* 726a4924c71SGirish K S * Selects the desired buswidth and switch to the HS200 mode 727a4924c71SGirish K S * if bus width set without error 728a4924c71SGirish K S */ 729a4924c71SGirish K S static int mmc_select_hs200(struct mmc_card *card) 730a4924c71SGirish K S { 731a4924c71SGirish K S int idx, err = 0; 732a4924c71SGirish K S struct mmc_host *host; 733a4924c71SGirish K S static unsigned ext_csd_bits[] = { 734a4924c71SGirish K S EXT_CSD_BUS_WIDTH_4, 735a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 736a4924c71SGirish K S }; 737a4924c71SGirish K S static unsigned bus_widths[] = { 738a4924c71SGirish K S MMC_BUS_WIDTH_4, 739a4924c71SGirish K S MMC_BUS_WIDTH_8, 740a4924c71SGirish K S }; 741a4924c71SGirish K S 742a4924c71SGirish K S BUG_ON(!card); 743a4924c71SGirish K S 744a4924c71SGirish K S host = card->host; 745a4924c71SGirish K S 746a4924c71SGirish K S if (card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_2V && 747a4924c71SGirish K S host->caps2 & MMC_CAP2_HS200_1_2V_SDR) 748a4924c71SGirish K S if (mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120, 0)) 749a4924c71SGirish K S err = mmc_set_signal_voltage(host, 750a4924c71SGirish K S MMC_SIGNAL_VOLTAGE_180, 0); 751a4924c71SGirish K S 752a4924c71SGirish K S /* If fails try again during next card power cycle */ 753a4924c71SGirish K S if (err) 754a4924c71SGirish K S goto err; 755a4924c71SGirish K S 756a4924c71SGirish K S idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 1 : 0; 757a4924c71SGirish K S 758a4924c71SGirish K S /* 759a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 760a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 761a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 762a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 763a4924c71SGirish K S */ 764a4924c71SGirish K S for (; idx >= 0; idx--) { 765a4924c71SGirish K S 766a4924c71SGirish K S /* 767a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 768a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 769a4924c71SGirish K S * mmc switch command returns error then switch to 770a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 771a4924c71SGirish K S * bus width on the host. 772a4924c71SGirish K S */ 773a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 774a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 775a4924c71SGirish K S ext_csd_bits[idx], 776a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 777a4924c71SGirish K S if (err) 778a4924c71SGirish K S continue; 779a4924c71SGirish K S 780a4924c71SGirish K S mmc_set_bus_width(card->host, bus_widths[idx]); 781a4924c71SGirish K S 782a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 783a4924c71SGirish K S err = mmc_compare_ext_csds(card, bus_widths[idx]); 784a4924c71SGirish K S else 785a4924c71SGirish K S err = mmc_bus_test(card, bus_widths[idx]); 786a4924c71SGirish K S if (!err) 787a4924c71SGirish K S break; 788a4924c71SGirish K S } 789a4924c71SGirish K S 790a4924c71SGirish K S /* switch to HS200 mode if bus width set successfully */ 791a4924c71SGirish K S if (!err) 792a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 793a4924c71SGirish K S EXT_CSD_HS_TIMING, 2, 0); 794a4924c71SGirish K S err: 795a4924c71SGirish K S return err; 796a4924c71SGirish K S } 797a4924c71SGirish K S 798a4924c71SGirish K S /* 7996abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 8006abaa0c9SPierre Ossman * 8018769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 8026abaa0c9SPierre Ossman * we're trying to reinitialise. 8037ea239d9SPierre Ossman */ 8048c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 8056abaa0c9SPierre Ossman struct mmc_card *oldcard) 8067ea239d9SPierre Ossman { 8077ea239d9SPierre Ossman struct mmc_card *card; 80825d5c699SPhilip Rakity int err, ddr = 0; 8097ea239d9SPierre Ossman u32 cid[4]; 8107ea239d9SPierre Ossman unsigned int max_dtr; 811b676f039SPhilip Rakity u32 rocr; 81208ee80ccSPhilip Rakity u8 *ext_csd = NULL; 8137ea239d9SPierre Ossman 8147ea239d9SPierre Ossman BUG_ON(!host); 815d84075c8SPierre Ossman WARN_ON(!host->claimed); 8167ea239d9SPierre Ossman 81744669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 81844669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 81944669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 82044669034SStefan Nilsson XK 821e7747475SUlf Hansson /* Initialization should be done at 3.3 V I/O voltage. */ 822e7747475SUlf Hansson mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, 0); 823e7747475SUlf Hansson 8247ea239d9SPierre Ossman /* 8257ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 8267ea239d9SPierre Ossman * need to tell some cards to go back to the idle 8277ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 8287ea239d9SPierre Ossman * respond. 829c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 8307ea239d9SPierre Ossman */ 8317ea239d9SPierre Ossman mmc_go_idle(host); 8327ea239d9SPierre Ossman 8337ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 834b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 83517b0429dSPierre Ossman if (err) 8366abaa0c9SPierre Ossman goto err; 8377ea239d9SPierre Ossman 8387ea239d9SPierre Ossman /* 839af517150SDavid Brownell * For SPI, enable CRC as appropriate. 840af517150SDavid Brownell */ 841af517150SDavid Brownell if (mmc_host_is_spi(host)) { 842af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 843af517150SDavid Brownell if (err) 844af517150SDavid Brownell goto err; 845af517150SDavid Brownell } 846af517150SDavid Brownell 847af517150SDavid Brownell /* 8487ea239d9SPierre Ossman * Fetch CID from card. 8497ea239d9SPierre Ossman */ 850af517150SDavid Brownell if (mmc_host_is_spi(host)) 851af517150SDavid Brownell err = mmc_send_cid(host, cid); 852af517150SDavid Brownell else 8537ea239d9SPierre Ossman err = mmc_all_send_cid(host, cid); 85417b0429dSPierre Ossman if (err) 8557ea239d9SPierre Ossman goto err; 8567ea239d9SPierre Ossman 8576abaa0c9SPierre Ossman if (oldcard) { 858adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 859adf66a0dSPierre Ossman err = -ENOENT; 8606abaa0c9SPierre Ossman goto err; 861adf66a0dSPierre Ossman } 8626abaa0c9SPierre Ossman 8636abaa0c9SPierre Ossman card = oldcard; 8646abaa0c9SPierre Ossman } else { 8657ea239d9SPierre Ossman /* 8667ea239d9SPierre Ossman * Allocate card structure. 8677ea239d9SPierre Ossman */ 86851ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 869adf66a0dSPierre Ossman if (IS_ERR(card)) { 870adf66a0dSPierre Ossman err = PTR_ERR(card); 8717ea239d9SPierre Ossman goto err; 872adf66a0dSPierre Ossman } 8737ea239d9SPierre Ossman 8747ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 8757ea239d9SPierre Ossman card->rca = 1; 8767ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 8776abaa0c9SPierre Ossman } 8787ea239d9SPierre Ossman 8797ea239d9SPierre Ossman /* 880af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 8817ea239d9SPierre Ossman */ 882af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 8837ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 88417b0429dSPierre Ossman if (err) 8857ea239d9SPierre Ossman goto free_card; 8867ea239d9SPierre Ossman 8877ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 888af517150SDavid Brownell } 8897ea239d9SPierre Ossman 8906abaa0c9SPierre Ossman if (!oldcard) { 8917ea239d9SPierre Ossman /* 8927ea239d9SPierre Ossman * Fetch CSD from card. 8937ea239d9SPierre Ossman */ 8947ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 89517b0429dSPierre Ossman if (err) 8967ea239d9SPierre Ossman goto free_card; 8977ea239d9SPierre Ossman 898bd766312SPierre Ossman err = mmc_decode_csd(card); 899adf66a0dSPierre Ossman if (err) 900bd766312SPierre Ossman goto free_card; 901bd766312SPierre Ossman err = mmc_decode_cid(card); 902adf66a0dSPierre Ossman if (err) 903bd766312SPierre Ossman goto free_card; 9046abaa0c9SPierre Ossman } 9057ea239d9SPierre Ossman 9067ea239d9SPierre Ossman /* 90789a73cf5SPierre Ossman * Select card, as all following commands rely on that. 9087ea239d9SPierre Ossman */ 909af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 9107ea239d9SPierre Ossman err = mmc_select_card(card); 91117b0429dSPierre Ossman if (err) 9127ea239d9SPierre Ossman goto free_card; 913af517150SDavid Brownell } 9147ea239d9SPierre Ossman 9156abaa0c9SPierre Ossman if (!oldcard) { 91689a73cf5SPierre Ossman /* 917af517150SDavid Brownell * Fetch and process extended CSD. 91889a73cf5SPierre Ossman */ 91908ee80ccSPhilip Rakity 92008ee80ccSPhilip Rakity err = mmc_get_ext_csd(card, &ext_csd); 92108ee80ccSPhilip Rakity if (err) 92208ee80ccSPhilip Rakity goto free_card; 92308ee80ccSPhilip Rakity err = mmc_read_ext_csd(card, ext_csd); 92417b0429dSPierre Ossman if (err) 9257ea239d9SPierre Ossman goto free_card; 926b676f039SPhilip Rakity 927b676f039SPhilip Rakity /* If doing byte addressing, check if required to do sector 928b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 929b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 930b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 931b676f039SPhilip Rakity */ 932b676f039SPhilip Rakity if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) 933b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 934b676f039SPhilip Rakity 935dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 936dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 9376abaa0c9SPierre Ossman } 9387ea239d9SPierre Ossman 9397ea239d9SPierre Ossman /* 940709de99dSChuanxiao Dong * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF 941709de99dSChuanxiao Dong * bit. This bit will be lost every time after a reset or power off. 942709de99dSChuanxiao Dong */ 94383bb24aaSAdrian Hunter if (card->ext_csd.enhanced_area_en || 94483bb24aaSAdrian Hunter (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { 945709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 946b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 947b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 948709de99dSChuanxiao Dong 949709de99dSChuanxiao Dong if (err && err != -EBADMSG) 950709de99dSChuanxiao Dong goto free_card; 951709de99dSChuanxiao Dong 952709de99dSChuanxiao Dong if (err) { 953709de99dSChuanxiao Dong err = 0; 954709de99dSChuanxiao Dong /* 955709de99dSChuanxiao Dong * Just disable enhanced area off & sz 956709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 957709de99dSChuanxiao Dong * during next time reinit 958709de99dSChuanxiao Dong */ 959709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 960709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 961709de99dSChuanxiao Dong } else { 962709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 963709de99dSChuanxiao Dong /* 964709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 965709de99dSChuanxiao Dong * This will affect the erase size, so 966709de99dSChuanxiao Dong * here need to reset erase size 967709de99dSChuanxiao Dong */ 968709de99dSChuanxiao Dong mmc_set_erase_size(card); 969709de99dSChuanxiao Dong } 970709de99dSChuanxiao Dong } 971709de99dSChuanxiao Dong 972709de99dSChuanxiao Dong /* 97341e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 97441e2a489SPhilip Rakity */ 975371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 976371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 977371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 978371a689fSAndrei Warkentin card->ext_csd.part_config, 979371a689fSAndrei Warkentin card->ext_csd.part_time); 980371a689fSAndrei Warkentin if (err && err != -EBADMSG) 981371a689fSAndrei Warkentin goto free_card; 98241e2a489SPhilip Rakity } 98341e2a489SPhilip Rakity 98441e2a489SPhilip Rakity /* 985bec8726aSGirish K S * If the host supports the power_off_notify capability then 986bec8726aSGirish K S * set the notification byte in the ext_csd register of device 987bec8726aSGirish K S */ 988bec8726aSGirish K S if ((host->caps2 & MMC_CAP2_POWEROFF_NOTIFY) && 989a80f1627SGirish K S (card->ext_csd.rev >= 6)) { 990bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 991bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 992bec8726aSGirish K S EXT_CSD_POWER_ON, 993bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 994bec8726aSGirish K S if (err && err != -EBADMSG) 995bec8726aSGirish K S goto free_card; 996bec8726aSGirish K S 99796a85d54SGirish K S /* 99896a85d54SGirish K S * The err can be -EBADMSG or 0, 99996a85d54SGirish K S * so check for success and update the flag 100096a85d54SGirish K S */ 1001bec8726aSGirish K S if (!err) 1002bec8726aSGirish K S card->poweroff_notify_state = MMC_POWERED_ON; 100396a85d54SGirish K S } 1004bec8726aSGirish K S 1005bec8726aSGirish K S /* 100689a73cf5SPierre Ossman * Activate high speed (if supported) 100789a73cf5SPierre Ossman */ 1008a4924c71SGirish K S if (card->ext_csd.hs_max_dtr != 0) { 1009a4924c71SGirish K S err = 0; 1010a4924c71SGirish K S if (card->ext_csd.hs_max_dtr > 52000000 && 1011a4924c71SGirish K S host->caps2 & MMC_CAP2_HS200) 1012a4924c71SGirish K S err = mmc_select_hs200(card); 1013a4924c71SGirish K S else if (host->caps & MMC_CAP_MMC_HIGHSPEED) 101489a73cf5SPierre Ossman err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10157488e924SGirish K S EXT_CSD_HS_TIMING, 1, 10167488e924SGirish K S card->ext_csd.generic_cmd6_time); 1017a4924c71SGirish K S 1018ef0b27d4SAdrian Hunter if (err && err != -EBADMSG) 101989a73cf5SPierre Ossman goto free_card; 102089a73cf5SPierre Ossman 1021ef0b27d4SAdrian Hunter if (err) { 1022a3c76eb9SGirish K S pr_warning("%s: switch to highspeed failed\n", 1023ef0b27d4SAdrian Hunter mmc_hostname(card->host)); 1024ef0b27d4SAdrian Hunter err = 0; 1025ef0b27d4SAdrian Hunter } else { 1026a4924c71SGirish K S if (card->ext_csd.hs_max_dtr > 52000000 && 1027a4924c71SGirish K S host->caps2 & MMC_CAP2_HS200) { 1028a4924c71SGirish K S mmc_card_set_hs200(card); 1029a4924c71SGirish K S mmc_set_timing(card->host, 1030a4924c71SGirish K S MMC_TIMING_MMC_HS200); 1031a4924c71SGirish K S } else { 103289a73cf5SPierre Ossman mmc_card_set_highspeed(card); 103389a73cf5SPierre Ossman mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 103489a73cf5SPierre Ossman } 1035ef0b27d4SAdrian Hunter } 1036a4924c71SGirish K S } 103789a73cf5SPierre Ossman 103889a73cf5SPierre Ossman /* 10397ea239d9SPierre Ossman * Compute bus speed. 10407ea239d9SPierre Ossman */ 10417ea239d9SPierre Ossman max_dtr = (unsigned int)-1; 10427ea239d9SPierre Ossman 1043a4924c71SGirish K S if (mmc_card_highspeed(card) || mmc_card_hs200(card)) { 10447ea239d9SPierre Ossman if (max_dtr > card->ext_csd.hs_max_dtr) 10457ea239d9SPierre Ossman max_dtr = card->ext_csd.hs_max_dtr; 10467ea239d9SPierre Ossman } else if (max_dtr > card->csd.max_dtr) { 10477ea239d9SPierre Ossman max_dtr = card->csd.max_dtr; 10487ea239d9SPierre Ossman } 10497ea239d9SPierre Ossman 10507ea239d9SPierre Ossman mmc_set_clock(host, max_dtr); 10517ea239d9SPierre Ossman 105289a73cf5SPierre Ossman /* 10530f8d8ea6SAdrian Hunter * Indicate DDR mode (if supported). 1054dfc13e84SHanumath Prasad */ 1055dfc13e84SHanumath Prasad if (mmc_card_highspeed(card)) { 1056dfc13e84SHanumath Prasad if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) 10574c4cb171SPhilip Rakity && ((host->caps & (MMC_CAP_1_8V_DDR | 10584c4cb171SPhilip Rakity MMC_CAP_UHS_DDR50)) 10594c4cb171SPhilip Rakity == (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50))) 106049e3b5a4SAdrian Hunter ddr = MMC_1_8V_DDR_MODE; 1061dfc13e84SHanumath Prasad else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) 10624c4cb171SPhilip Rakity && ((host->caps & (MMC_CAP_1_2V_DDR | 10634c4cb171SPhilip Rakity MMC_CAP_UHS_DDR50)) 10644c4cb171SPhilip Rakity == (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50))) 106549e3b5a4SAdrian Hunter ddr = MMC_1_2V_DDR_MODE; 1066dfc13e84SHanumath Prasad } 1067dfc13e84SHanumath Prasad 1068dfc13e84SHanumath Prasad /* 1069a4924c71SGirish K S * Indicate HS200 SDR mode (if supported). 1070a4924c71SGirish K S */ 1071a4924c71SGirish K S if (mmc_card_hs200(card)) { 1072a4924c71SGirish K S u32 ext_csd_bits; 1073a4924c71SGirish K S u32 bus_width = card->host->ios.bus_width; 1074a4924c71SGirish K S 1075a4924c71SGirish K S /* 1076a4924c71SGirish K S * For devices supporting HS200 mode, the bus width has 1077a4924c71SGirish K S * to be set before executing the tuning function. If 1078a4924c71SGirish K S * set before tuning, then device will respond with CRC 1079a4924c71SGirish K S * errors for responses on CMD line. So for HS200 the 1080a4924c71SGirish K S * sequence will be 1081a4924c71SGirish K S * 1. set bus width 4bit / 8 bit (1 bit not supported) 1082a4924c71SGirish K S * 2. switch to HS200 mode 1083a4924c71SGirish K S * 3. set the clock to > 52Mhz <=200MHz and 1084a4924c71SGirish K S * 4. execute tuning for HS200 1085a4924c71SGirish K S */ 1086a4924c71SGirish K S if ((host->caps2 & MMC_CAP2_HS200) && 108752d0974eSSubhash Jadavani card->host->ops->execute_tuning) { 108852d0974eSSubhash Jadavani mmc_host_clk_hold(card->host); 1089a4924c71SGirish K S err = card->host->ops->execute_tuning(card->host, 1090a4924c71SGirish K S MMC_SEND_TUNING_BLOCK_HS200); 109152d0974eSSubhash Jadavani mmc_host_clk_release(card->host); 109252d0974eSSubhash Jadavani } 1093a4924c71SGirish K S if (err) { 1094a4924c71SGirish K S pr_warning("%s: tuning execution failed\n", 1095a4924c71SGirish K S mmc_hostname(card->host)); 1096a4924c71SGirish K S goto err; 1097a4924c71SGirish K S } 1098a4924c71SGirish K S 1099a4924c71SGirish K S ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 1100a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 1101a4924c71SGirish K S err = mmc_select_powerclass(card, ext_csd_bits, ext_csd); 110293fc5a47SSubhash Jadavani if (err) 110393fc5a47SSubhash Jadavani pr_warning("%s: power class selection to bus width %d" 110493fc5a47SSubhash Jadavani " failed\n", mmc_hostname(card->host), 110593fc5a47SSubhash Jadavani 1 << bus_width); 1106a4924c71SGirish K S } 1107a4924c71SGirish K S 1108a4924c71SGirish K S /* 11090f8d8ea6SAdrian Hunter * Activate wide bus and DDR (if supported). 111089a73cf5SPierre Ossman */ 1111a4924c71SGirish K S if (!mmc_card_hs200(card) && 11127488e924SGirish K S (card->csd.mmca_vsn >= CSD_SPEC_VER_4) && 1113b30f8af3SJarkko Lavinen (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { 111422113efdSAries Lee static unsigned ext_csd_bits[][2] = { 111522113efdSAries Lee { EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 }, 111622113efdSAries Lee { EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 }, 111722113efdSAries Lee { EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 }, 111822113efdSAries Lee }; 111922113efdSAries Lee static unsigned bus_widths[] = { 112022113efdSAries Lee MMC_BUS_WIDTH_8, 112122113efdSAries Lee MMC_BUS_WIDTH_4, 112222113efdSAries Lee MMC_BUS_WIDTH_1 112322113efdSAries Lee }; 112422113efdSAries Lee unsigned idx, bus_width = 0; 1125b30f8af3SJarkko Lavinen 112622113efdSAries Lee if (host->caps & MMC_CAP_8_BIT_DATA) 112722113efdSAries Lee idx = 0; 1128dfc13e84SHanumath Prasad else 112922113efdSAries Lee idx = 1; 113022113efdSAries Lee for (; idx < ARRAY_SIZE(bus_widths); idx++) { 113122113efdSAries Lee bus_width = bus_widths[idx]; 113222113efdSAries Lee if (bus_width == MMC_BUS_WIDTH_1) 113322113efdSAries Lee ddr = 0; /* no DDR for 1-bit width */ 1134b87d8dbfSGirish K S err = mmc_select_powerclass(card, ext_csd_bits[idx][0], 1135b87d8dbfSGirish K S ext_csd); 1136b87d8dbfSGirish K S if (err) 113793fc5a47SSubhash Jadavani pr_warning("%s: power class selection to " 1138b87d8dbfSGirish K S "bus width %d failed\n", 1139b87d8dbfSGirish K S mmc_hostname(card->host), 1140b87d8dbfSGirish K S 1 << bus_width); 1141b87d8dbfSGirish K S 114222113efdSAries Lee err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 114322113efdSAries Lee EXT_CSD_BUS_WIDTH, 1144d3a8d95dSAndrei Warkentin ext_csd_bits[idx][0], 1145b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 114622113efdSAries Lee if (!err) { 11474c4cb171SPhilip Rakity mmc_set_bus_width(card->host, bus_width); 114808ee80ccSPhilip Rakity 114922113efdSAries Lee /* 115022113efdSAries Lee * If controller can't handle bus width test, 115108ee80ccSPhilip Rakity * compare ext_csd previously read in 1 bit mode 115208ee80ccSPhilip Rakity * against ext_csd at new bus width 115322113efdSAries Lee */ 115422113efdSAries Lee if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 115508ee80ccSPhilip Rakity err = mmc_compare_ext_csds(card, 115608ee80ccSPhilip Rakity bus_width); 115708ee80ccSPhilip Rakity else 115822113efdSAries Lee err = mmc_bus_test(card, bus_width); 115922113efdSAries Lee if (!err) 116022113efdSAries Lee break; 116122113efdSAries Lee } 1162b30f8af3SJarkko Lavinen } 1163b30f8af3SJarkko Lavinen 116422113efdSAries Lee if (!err && ddr) { 1165b87d8dbfSGirish K S err = mmc_select_powerclass(card, ext_csd_bits[idx][1], 1166b87d8dbfSGirish K S ext_csd); 1167b87d8dbfSGirish K S if (err) 116893fc5a47SSubhash Jadavani pr_warning("%s: power class selection to " 1169b87d8dbfSGirish K S "bus width %d ddr %d failed\n", 1170b87d8dbfSGirish K S mmc_hostname(card->host), 1171b87d8dbfSGirish K S 1 << bus_width, ddr); 1172b87d8dbfSGirish K S 117389a73cf5SPierre Ossman err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 117422113efdSAries Lee EXT_CSD_BUS_WIDTH, 1175d3a8d95dSAndrei Warkentin ext_csd_bits[idx][1], 1176b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 117722113efdSAries Lee } 1178ef0b27d4SAdrian Hunter if (err) { 1179a3c76eb9SGirish K S pr_warning("%s: switch to bus width %d ddr %d " 1180ef0b27d4SAdrian Hunter "failed\n", mmc_hostname(card->host), 11810f8d8ea6SAdrian Hunter 1 << bus_width, ddr); 118222113efdSAries Lee goto free_card; 118322113efdSAries Lee } else if (ddr) { 11844c4cb171SPhilip Rakity /* 11854c4cb171SPhilip Rakity * eMMC cards can support 3.3V to 1.2V i/o (vccq) 11864c4cb171SPhilip Rakity * signaling. 11874c4cb171SPhilip Rakity * 11884c4cb171SPhilip Rakity * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 11894c4cb171SPhilip Rakity * 11904c4cb171SPhilip Rakity * 1.8V vccq at 3.3V core voltage (vcc) is not required 11914c4cb171SPhilip Rakity * in the JEDEC spec for DDR. 11924c4cb171SPhilip Rakity * 11934c4cb171SPhilip Rakity * Do not force change in vccq since we are obviously 11944c4cb171SPhilip Rakity * working and no change to vccq is needed. 11954c4cb171SPhilip Rakity * 11964c4cb171SPhilip Rakity * WARNING: eMMC rules are NOT the same as SD DDR 11974c4cb171SPhilip Rakity */ 1198913047e9SGirish K S if (ddr == MMC_1_2V_DDR_MODE) { 11994c4cb171SPhilip Rakity err = mmc_set_signal_voltage(host, 12004c4cb171SPhilip Rakity MMC_SIGNAL_VOLTAGE_120, 0); 12014c4cb171SPhilip Rakity if (err) 12024c4cb171SPhilip Rakity goto err; 12034c4cb171SPhilip Rakity } 12040f8d8ea6SAdrian Hunter mmc_card_set_ddr_mode(card); 12054c4cb171SPhilip Rakity mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50); 12064c4cb171SPhilip Rakity mmc_set_bus_width(card->host, bus_width); 120789a73cf5SPierre Ossman } 1208ef0b27d4SAdrian Hunter } 120989a73cf5SPierre Ossman 1210881d1c25SSeungwon Jeon /* 121152d0974eSSubhash Jadavani * Enable HPI feature (if supported) 121252d0974eSSubhash Jadavani */ 121352d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 121452d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 121552d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 121652d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 121752d0974eSSubhash Jadavani if (err && err != -EBADMSG) 121852d0974eSSubhash Jadavani goto free_card; 121952d0974eSSubhash Jadavani if (err) { 122052d0974eSSubhash Jadavani pr_warning("%s: Enabling HPI failed\n", 122152d0974eSSubhash Jadavani mmc_hostname(card->host)); 122252d0974eSSubhash Jadavani err = 0; 122352d0974eSSubhash Jadavani } else 122452d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 122552d0974eSSubhash Jadavani } 122652d0974eSSubhash Jadavani 122752d0974eSSubhash Jadavani /* 1228881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1229881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1230881d1c25SSeungwon Jeon */ 1231881d1c25SSeungwon Jeon if ((host->caps2 & MMC_CAP2_CACHE_CTRL) && 1232881d1c25SSeungwon Jeon card->ext_csd.cache_size > 0) { 1233881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 12348bc0678bSSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 12358bc0678bSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1236881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1237881d1c25SSeungwon Jeon goto free_card; 1238881d1c25SSeungwon Jeon 1239881d1c25SSeungwon Jeon /* 1240881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1241881d1c25SSeungwon Jeon */ 12428bc0678bSSeungwon Jeon if (err) { 12438bc0678bSSeungwon Jeon pr_warning("%s: Cache is supported, " 12448bc0678bSSeungwon Jeon "but failed to turn on (%d)\n", 12458bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 12468bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 12478bc0678bSSeungwon Jeon err = 0; 12488bc0678bSSeungwon Jeon } else { 12498bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 12508bc0678bSSeungwon Jeon } 1251881d1c25SSeungwon Jeon } 1252881d1c25SSeungwon Jeon 12536abaa0c9SPierre Ossman if (!oldcard) 12547ea239d9SPierre Ossman host->card = card; 12557ea239d9SPierre Ossman 125608ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 125717b0429dSPierre Ossman return 0; 12586abaa0c9SPierre Ossman 12596abaa0c9SPierre Ossman free_card: 12606abaa0c9SPierre Ossman if (!oldcard) 12616abaa0c9SPierre Ossman mmc_remove_card(card); 12626abaa0c9SPierre Ossman err: 126308ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 12646abaa0c9SPierre Ossman 1265adf66a0dSPierre Ossman return err; 12666abaa0c9SPierre Ossman } 12676abaa0c9SPierre Ossman 12686abaa0c9SPierre Ossman /* 12696abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 12706abaa0c9SPierre Ossman */ 12716abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 12726abaa0c9SPierre Ossman { 12736abaa0c9SPierre Ossman BUG_ON(!host); 12746abaa0c9SPierre Ossman BUG_ON(!host->card); 12756abaa0c9SPierre Ossman 12766abaa0c9SPierre Ossman mmc_remove_card(host->card); 12776abaa0c9SPierre Ossman host->card = NULL; 12786abaa0c9SPierre Ossman } 12796abaa0c9SPierre Ossman 12806abaa0c9SPierre Ossman /* 1281d3049504SAdrian Hunter * Card detection - card is alive. 1282d3049504SAdrian Hunter */ 1283d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1284d3049504SAdrian Hunter { 1285d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1286d3049504SAdrian Hunter } 1287d3049504SAdrian Hunter 1288d3049504SAdrian Hunter /* 12896abaa0c9SPierre Ossman * Card detection callback from host. 12906abaa0c9SPierre Ossman */ 12916abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 12926abaa0c9SPierre Ossman { 12936abaa0c9SPierre Ossman int err; 12946abaa0c9SPierre Ossman 12956abaa0c9SPierre Ossman BUG_ON(!host); 12966abaa0c9SPierre Ossman BUG_ON(!host->card); 12976abaa0c9SPierre Ossman 12986abaa0c9SPierre Ossman mmc_claim_host(host); 12996abaa0c9SPierre Ossman 13006abaa0c9SPierre Ossman /* 13016abaa0c9SPierre Ossman * Just check if our card has been removed. 13026abaa0c9SPierre Ossman */ 1303d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 13046abaa0c9SPierre Ossman 13057ea239d9SPierre Ossman mmc_release_host(host); 13067ea239d9SPierre Ossman 130717b0429dSPierre Ossman if (err) { 13084101c16aSPierre Ossman mmc_remove(host); 13096abaa0c9SPierre Ossman 13106abaa0c9SPierre Ossman mmc_claim_host(host); 13116abaa0c9SPierre Ossman mmc_detach_bus(host); 13127f7e4129SUlf Hansson mmc_power_off(host); 13136abaa0c9SPierre Ossman mmc_release_host(host); 13146abaa0c9SPierre Ossman } 13156abaa0c9SPierre Ossman } 13166abaa0c9SPierre Ossman 13176abaa0c9SPierre Ossman /* 13186abaa0c9SPierre Ossman * Suspend callback from host. 13196abaa0c9SPierre Ossman */ 132095cdfb72SNicolas Pitre static int mmc_suspend(struct mmc_host *host) 13216abaa0c9SPierre Ossman { 1322c3805467SBalaji T K int err = 0; 1323c3805467SBalaji T K 13246abaa0c9SPierre Ossman BUG_ON(!host); 13256abaa0c9SPierre Ossman BUG_ON(!host->card); 13266abaa0c9SPierre Ossman 13276abaa0c9SPierre Ossman mmc_claim_host(host); 13283e73c36bSGirish K S if (mmc_card_can_sleep(host)) { 1329c3805467SBalaji T K err = mmc_card_sleep(host); 13303e73c36bSGirish K S if (!err) 13313e73c36bSGirish K S mmc_card_set_sleep(host->card); 13323e73c36bSGirish K S } else if (!mmc_host_is_spi(host)) 13336abaa0c9SPierre Ossman mmc_deselect_cards(host); 13343e73c36bSGirish K S host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); 13356abaa0c9SPierre Ossman mmc_release_host(host); 133695cdfb72SNicolas Pitre 1337c3805467SBalaji T K return err; 13386abaa0c9SPierre Ossman } 13396abaa0c9SPierre Ossman 13406abaa0c9SPierre Ossman /* 13416abaa0c9SPierre Ossman * Resume callback from host. 13426abaa0c9SPierre Ossman * 13436abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 13446abaa0c9SPierre Ossman * and, if so, restore all state to it. 13456abaa0c9SPierre Ossman */ 134695cdfb72SNicolas Pitre static int mmc_resume(struct mmc_host *host) 13476abaa0c9SPierre Ossman { 13486abaa0c9SPierre Ossman int err; 13496abaa0c9SPierre Ossman 13506abaa0c9SPierre Ossman BUG_ON(!host); 13516abaa0c9SPierre Ossman BUG_ON(!host->card); 13526abaa0c9SPierre Ossman 13536abaa0c9SPierre Ossman mmc_claim_host(host); 13543e73c36bSGirish K S if (mmc_card_is_sleep(host->card)) { 13553e73c36bSGirish K S err = mmc_card_awake(host); 13563e73c36bSGirish K S mmc_card_clr_sleep(host->card); 13573e73c36bSGirish K S } else 13588c75deaeSPierre Ossman err = mmc_init_card(host, host->ocr, host->card); 13592986d0bfSPierre Ossman mmc_release_host(host); 13602986d0bfSPierre Ossman 136195cdfb72SNicolas Pitre return err; 13626abaa0c9SPierre Ossman } 13636abaa0c9SPierre Ossman 136412ae637fSOhad Ben-Cohen static int mmc_power_restore(struct mmc_host *host) 1365eae1aeeeSAdrian Hunter { 136612ae637fSOhad Ben-Cohen int ret; 136712ae637fSOhad Ben-Cohen 13683e73c36bSGirish K S host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); 13693e73c36bSGirish K S mmc_card_clr_sleep(host->card); 1370eae1aeeeSAdrian Hunter mmc_claim_host(host); 137112ae637fSOhad Ben-Cohen ret = mmc_init_card(host, host->ocr, host->card); 1372eae1aeeeSAdrian Hunter mmc_release_host(host); 137312ae637fSOhad Ben-Cohen 137412ae637fSOhad Ben-Cohen return ret; 1375eae1aeeeSAdrian Hunter } 1376eae1aeeeSAdrian Hunter 1377b1ebe384SJarkko Lavinen static int mmc_sleep(struct mmc_host *host) 1378b1ebe384SJarkko Lavinen { 1379b1ebe384SJarkko Lavinen struct mmc_card *card = host->card; 1380b1ebe384SJarkko Lavinen int err = -ENOSYS; 1381b1ebe384SJarkko Lavinen 1382b1ebe384SJarkko Lavinen if (card && card->ext_csd.rev >= 3) { 1383b1ebe384SJarkko Lavinen err = mmc_card_sleepawake(host, 1); 1384b1ebe384SJarkko Lavinen if (err < 0) 1385b1ebe384SJarkko Lavinen pr_debug("%s: Error %d while putting card into sleep", 1386b1ebe384SJarkko Lavinen mmc_hostname(host), err); 1387b1ebe384SJarkko Lavinen } 1388b1ebe384SJarkko Lavinen 1389b1ebe384SJarkko Lavinen return err; 1390b1ebe384SJarkko Lavinen } 1391b1ebe384SJarkko Lavinen 1392b1ebe384SJarkko Lavinen static int mmc_awake(struct mmc_host *host) 1393b1ebe384SJarkko Lavinen { 1394b1ebe384SJarkko Lavinen struct mmc_card *card = host->card; 1395b1ebe384SJarkko Lavinen int err = -ENOSYS; 1396b1ebe384SJarkko Lavinen 1397b1ebe384SJarkko Lavinen if (card && card->ext_csd.rev >= 3) { 1398b1ebe384SJarkko Lavinen err = mmc_card_sleepawake(host, 0); 1399b1ebe384SJarkko Lavinen if (err < 0) 1400b1ebe384SJarkko Lavinen pr_debug("%s: Error %d while awaking sleeping card", 1401b1ebe384SJarkko Lavinen mmc_hostname(host), err); 1402b1ebe384SJarkko Lavinen } 1403b1ebe384SJarkko Lavinen 1404b1ebe384SJarkko Lavinen return err; 1405b1ebe384SJarkko Lavinen } 1406b1ebe384SJarkko Lavinen 14079feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 1408b1ebe384SJarkko Lavinen .awake = mmc_awake, 1409b1ebe384SJarkko Lavinen .sleep = mmc_sleep, 14109feae246SAdrian Hunter .remove = mmc_remove, 14119feae246SAdrian Hunter .detect = mmc_detect, 14129feae246SAdrian Hunter .suspend = NULL, 14139feae246SAdrian Hunter .resume = NULL, 1414eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1415d3049504SAdrian Hunter .alive = mmc_alive, 14169feae246SAdrian Hunter }; 14179feae246SAdrian Hunter 14189feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops_unsafe = { 1419b1ebe384SJarkko Lavinen .awake = mmc_awake, 1420b1ebe384SJarkko Lavinen .sleep = mmc_sleep, 14219feae246SAdrian Hunter .remove = mmc_remove, 14229feae246SAdrian Hunter .detect = mmc_detect, 14239feae246SAdrian Hunter .suspend = mmc_suspend, 14249feae246SAdrian Hunter .resume = mmc_resume, 1425eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1426d3049504SAdrian Hunter .alive = mmc_alive, 14279feae246SAdrian Hunter }; 14289feae246SAdrian Hunter 14299feae246SAdrian Hunter static void mmc_attach_bus_ops(struct mmc_host *host) 14309feae246SAdrian Hunter { 14319feae246SAdrian Hunter const struct mmc_bus_ops *bus_ops; 14329feae246SAdrian Hunter 143371d7d3d1SMatt Fleming if (!mmc_card_is_removable(host)) 14349feae246SAdrian Hunter bus_ops = &mmc_ops_unsafe; 14359feae246SAdrian Hunter else 14369feae246SAdrian Hunter bus_ops = &mmc_ops; 14379feae246SAdrian Hunter mmc_attach_bus(host, bus_ops); 14389feae246SAdrian Hunter } 14399feae246SAdrian Hunter 14406abaa0c9SPierre Ossman /* 14416abaa0c9SPierre Ossman * Starting point for MMC card init. 14426abaa0c9SPierre Ossman */ 1443807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 14446abaa0c9SPierre Ossman { 14456abaa0c9SPierre Ossman int err; 1446807e8e40SAndy Ross u32 ocr; 14476abaa0c9SPierre Ossman 14486abaa0c9SPierre Ossman BUG_ON(!host); 1449d84075c8SPierre Ossman WARN_ON(!host->claimed); 14506abaa0c9SPierre Ossman 145144669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 145244669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 145344669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 145444669034SStefan Nilsson XK 1455807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 1456807e8e40SAndy Ross if (err) 1457807e8e40SAndy Ross return err; 1458807e8e40SAndy Ross 14599feae246SAdrian Hunter mmc_attach_bus_ops(host); 14608f230f45STakashi Iwai if (host->ocr_avail_mmc) 14618f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 14626abaa0c9SPierre Ossman 14636abaa0c9SPierre Ossman /* 1464af517150SDavid Brownell * We need to get OCR a different way for SPI. 1465af517150SDavid Brownell */ 1466af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1467af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 1468af517150SDavid Brownell if (err) 1469af517150SDavid Brownell goto err; 1470af517150SDavid Brownell } 1471af517150SDavid Brownell 1472af517150SDavid Brownell /* 14736abaa0c9SPierre Ossman * Sanity check the voltages that the card claims to 14746abaa0c9SPierre Ossman * support. 14756abaa0c9SPierre Ossman */ 14766abaa0c9SPierre Ossman if (ocr & 0x7F) { 1477a3c76eb9SGirish K S pr_warning("%s: card claims to support voltages " 14786abaa0c9SPierre Ossman "below the defined range. These will be ignored.\n", 14796abaa0c9SPierre Ossman mmc_hostname(host)); 14806abaa0c9SPierre Ossman ocr &= ~0x7F; 14816abaa0c9SPierre Ossman } 14826abaa0c9SPierre Ossman 14836abaa0c9SPierre Ossman host->ocr = mmc_select_voltage(host, ocr); 14846abaa0c9SPierre Ossman 14856abaa0c9SPierre Ossman /* 14866abaa0c9SPierre Ossman * Can we support the voltage of the card? 14876abaa0c9SPierre Ossman */ 1488109b5bedSPierre Ossman if (!host->ocr) { 1489109b5bedSPierre Ossman err = -EINVAL; 14906abaa0c9SPierre Ossman goto err; 1491109b5bedSPierre Ossman } 14926abaa0c9SPierre Ossman 14936abaa0c9SPierre Ossman /* 14946abaa0c9SPierre Ossman * Detect and init the card. 14956abaa0c9SPierre Ossman */ 14968c75deaeSPierre Ossman err = mmc_init_card(host, host->ocr, NULL); 149717b0429dSPierre Ossman if (err) 14986abaa0c9SPierre Ossman goto err; 14996abaa0c9SPierre Ossman 15006abaa0c9SPierre Ossman mmc_release_host(host); 15014101c16aSPierre Ossman err = mmc_add_card(host->card); 1502807e8e40SAndy Ross mmc_claim_host(host); 15037ea239d9SPierre Ossman if (err) 15042986d0bfSPierre Ossman goto remove_card; 15057ea239d9SPierre Ossman 15067ea239d9SPierre Ossman return 0; 15077ea239d9SPierre Ossman 15082986d0bfSPierre Ossman remove_card: 1509807e8e40SAndy Ross mmc_release_host(host); 15106abaa0c9SPierre Ossman mmc_remove_card(host->card); 15112986d0bfSPierre Ossman mmc_claim_host(host); 1512807e8e40SAndy Ross host->card = NULL; 15137ea239d9SPierre Ossman err: 15147ea239d9SPierre Ossman mmc_detach_bus(host); 15157ea239d9SPierre Ossman 1516a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 1517109b5bedSPierre Ossman mmc_hostname(host), err); 1518109b5bedSPierre Ossman 1519adf66a0dSPierre Ossman return err; 15207ea239d9SPierre Ossman } 1521