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); 9951e7e8b6SBernie Thompson card->cid.prv = UNSTUFF_BITS(resp, 48, 8); 1007ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 32); 1017ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1027ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1037ea239d9SPierre Ossman break; 1047ea239d9SPierre Ossman 1057ea239d9SPierre Ossman default: 106a3c76eb9SGirish K S pr_err("%s: card has unknown MMCA version %d\n", 1077ea239d9SPierre Ossman mmc_hostname(card->host), card->csd.mmca_vsn); 108bd766312SPierre Ossman return -EINVAL; 1097ea239d9SPierre Ossman } 110bd766312SPierre Ossman 111bd766312SPierre Ossman return 0; 1127ea239d9SPierre Ossman } 1137ea239d9SPierre Ossman 114dfe86cbaSAdrian Hunter static void mmc_set_erase_size(struct mmc_card *card) 115dfe86cbaSAdrian Hunter { 116dfe86cbaSAdrian Hunter if (card->ext_csd.erase_group_def & 1) 117dfe86cbaSAdrian Hunter card->erase_size = card->ext_csd.hc_erase_size; 118dfe86cbaSAdrian Hunter else 119dfe86cbaSAdrian Hunter card->erase_size = card->csd.erase_size; 120dfe86cbaSAdrian Hunter 121dfe86cbaSAdrian Hunter mmc_init_erase(card); 122dfe86cbaSAdrian Hunter } 123dfe86cbaSAdrian Hunter 1247ea239d9SPierre Ossman /* 1257ea239d9SPierre Ossman * Given a 128-bit response, decode to our card CSD structure. 1267ea239d9SPierre Ossman */ 127bd766312SPierre Ossman static int mmc_decode_csd(struct mmc_card *card) 1287ea239d9SPierre Ossman { 1297ea239d9SPierre Ossman struct mmc_csd *csd = &card->csd; 130dfe86cbaSAdrian Hunter unsigned int e, m, a, b; 1317ea239d9SPierre Ossman u32 *resp = card->raw_csd; 1327ea239d9SPierre Ossman 1337ea239d9SPierre Ossman /* 1347ea239d9SPierre Ossman * We only understand CSD structure v1.1 and v1.2. 1357ea239d9SPierre Ossman * v1.2 has extra information in bits 15, 11 and 10. 1366da24b78SKyungmin Park * We also support eMMC v4.4 & v4.41. 1377ea239d9SPierre Ossman */ 1386da24b78SKyungmin Park csd->structure = UNSTUFF_BITS(resp, 126, 2); 1396da24b78SKyungmin Park if (csd->structure == 0) { 140a3c76eb9SGirish K S pr_err("%s: unrecognised CSD structure version %d\n", 1416da24b78SKyungmin Park mmc_hostname(card->host), csd->structure); 142bd766312SPierre Ossman return -EINVAL; 1437ea239d9SPierre Ossman } 1447ea239d9SPierre Ossman 1457ea239d9SPierre Ossman csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); 1467ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1477ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1487ea239d9SPierre Ossman csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; 1497ea239d9SPierre Ossman csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1507ea239d9SPierre Ossman 1517ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1527ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1537ea239d9SPierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1547ea239d9SPierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1557ea239d9SPierre Ossman 1567ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1577ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1587ea239d9SPierre Ossman csd->capacity = (1 + m) << (e + 2); 1597ea239d9SPierre Ossman 1607ea239d9SPierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1617ea239d9SPierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1627ea239d9SPierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1637ea239d9SPierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1647ea239d9SPierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1657ea239d9SPierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1667ea239d9SPierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 167bd766312SPierre Ossman 168dfe86cbaSAdrian Hunter if (csd->write_blkbits >= 9) { 169dfe86cbaSAdrian Hunter a = UNSTUFF_BITS(resp, 42, 5); 170dfe86cbaSAdrian Hunter b = UNSTUFF_BITS(resp, 37, 5); 171dfe86cbaSAdrian Hunter csd->erase_size = (a + 1) * (b + 1); 172dfe86cbaSAdrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 173dfe86cbaSAdrian Hunter } 174dfe86cbaSAdrian Hunter 175bd766312SPierre Ossman return 0; 1767ea239d9SPierre Ossman } 1777ea239d9SPierre Ossman 1787ea239d9SPierre Ossman /* 17908ee80ccSPhilip Rakity * Read extended CSD. 1807ea239d9SPierre Ossman */ 18108ee80ccSPhilip Rakity static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) 1827ea239d9SPierre Ossman { 1837ea239d9SPierre Ossman int err; 1847ea239d9SPierre Ossman u8 *ext_csd; 1857ea239d9SPierre Ossman 1867ea239d9SPierre Ossman BUG_ON(!card); 18708ee80ccSPhilip Rakity BUG_ON(!new_ext_csd); 18808ee80ccSPhilip Rakity 18908ee80ccSPhilip Rakity *new_ext_csd = NULL; 1907ea239d9SPierre Ossman 1917ea239d9SPierre Ossman if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 19217b0429dSPierre Ossman return 0; 1937ea239d9SPierre Ossman 1947ea239d9SPierre Ossman /* 1957ea239d9SPierre Ossman * As the ext_csd is so large and mostly unused, we don't store the 1967ea239d9SPierre Ossman * raw block in mmc_card. 1977ea239d9SPierre Ossman */ 1987ea239d9SPierre Ossman ext_csd = kmalloc(512, GFP_KERNEL); 1997ea239d9SPierre Ossman if (!ext_csd) { 200a3c76eb9SGirish K S pr_err("%s: could not allocate a buffer to " 201adf66a0dSPierre Ossman "receive the ext_csd.\n", mmc_hostname(card->host)); 20217b0429dSPierre Ossman return -ENOMEM; 2037ea239d9SPierre Ossman } 2047ea239d9SPierre Ossman 2057ea239d9SPierre Ossman err = mmc_send_ext_csd(card, ext_csd); 20617b0429dSPierre Ossman if (err) { 20708ee80ccSPhilip Rakity kfree(ext_csd); 20808ee80ccSPhilip Rakity *new_ext_csd = NULL; 20908ee80ccSPhilip Rakity 210d08ebeddSWolfgang Muees /* If the host or the card can't do the switch, 211d08ebeddSWolfgang Muees * fail more gracefully. */ 212d08ebeddSWolfgang Muees if ((err != -EINVAL) 213d08ebeddSWolfgang Muees && (err != -ENOSYS) 214d08ebeddSWolfgang Muees && (err != -EFAULT)) 21508ee80ccSPhilip Rakity return err; 216adf66a0dSPierre Ossman 217adf66a0dSPierre Ossman /* 2187ea239d9SPierre Ossman * High capacity cards should have this "magic" size 2197ea239d9SPierre Ossman * stored in their CSD. 2207ea239d9SPierre Ossman */ 2217ea239d9SPierre Ossman if (card->csd.capacity == (4096 * 512)) { 222a3c76eb9SGirish K S pr_err("%s: unable to read EXT_CSD " 2237ea239d9SPierre Ossman "on a possible high capacity card. " 2247ea239d9SPierre Ossman "Card will be ignored.\n", 2257ea239d9SPierre Ossman mmc_hostname(card->host)); 2267ea239d9SPierre Ossman } else { 227a3c76eb9SGirish K S pr_warning("%s: unable to read " 2287ea239d9SPierre Ossman "EXT_CSD, performance might " 2297ea239d9SPierre Ossman "suffer.\n", 2307ea239d9SPierre Ossman mmc_hostname(card->host)); 23117b0429dSPierre Ossman err = 0; 2327ea239d9SPierre Ossman } 23308ee80ccSPhilip Rakity } else 23408ee80ccSPhilip Rakity *new_ext_csd = ext_csd; 235adf66a0dSPierre Ossman 23608ee80ccSPhilip Rakity return err; 2377ea239d9SPierre Ossman } 2387ea239d9SPierre Ossman 23996cf5f02SSeungwon Jeon static void mmc_select_card_type(struct mmc_card *card) 24096cf5f02SSeungwon Jeon { 24196cf5f02SSeungwon Jeon struct mmc_host *host = card->host; 24296cf5f02SSeungwon Jeon u8 card_type = card->ext_csd.raw_card_type & EXT_CSD_CARD_TYPE_MASK; 2435f1a4dd0SLee Jones u32 caps = host->caps, caps2 = host->caps2; 24496cf5f02SSeungwon Jeon unsigned int hs_max_dtr = 0; 24596cf5f02SSeungwon Jeon 24696cf5f02SSeungwon Jeon if (card_type & EXT_CSD_CARD_TYPE_26) 24796cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_26_MAX_DTR; 24896cf5f02SSeungwon Jeon 24996cf5f02SSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 25096cf5f02SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_52) 25196cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_52_MAX_DTR; 25296cf5f02SSeungwon Jeon 25396cf5f02SSeungwon Jeon if ((caps & MMC_CAP_1_8V_DDR && 25496cf5f02SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) || 25596cf5f02SSeungwon Jeon (caps & MMC_CAP_1_2V_DDR && 25696cf5f02SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)) 25796cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 25896cf5f02SSeungwon Jeon 25996cf5f02SSeungwon Jeon if ((caps2 & MMC_CAP2_HS200_1_8V_SDR && 26096cf5f02SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_SDR_1_8V) || 26196cf5f02SSeungwon Jeon (caps2 & MMC_CAP2_HS200_1_2V_SDR && 26296cf5f02SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_SDR_1_2V)) 26396cf5f02SSeungwon Jeon hs_max_dtr = MMC_HS200_MAX_DTR; 26496cf5f02SSeungwon Jeon 26596cf5f02SSeungwon Jeon card->ext_csd.hs_max_dtr = hs_max_dtr; 26696cf5f02SSeungwon Jeon card->ext_csd.card_type = card_type; 26796cf5f02SSeungwon Jeon } 26896cf5f02SSeungwon Jeon 26908ee80ccSPhilip Rakity /* 27008ee80ccSPhilip Rakity * Decode extended CSD. 27108ee80ccSPhilip Rakity */ 27208ee80ccSPhilip Rakity static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) 27308ee80ccSPhilip Rakity { 274e0c368d5SNamjae Jeon int err = 0, idx; 275e0c368d5SNamjae Jeon unsigned int part_size; 276e0c368d5SNamjae Jeon u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; 27708ee80ccSPhilip Rakity 27808ee80ccSPhilip Rakity BUG_ON(!card); 27908ee80ccSPhilip Rakity 28008ee80ccSPhilip Rakity if (!ext_csd) 28108ee80ccSPhilip Rakity return 0; 28208ee80ccSPhilip Rakity 2836da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 284f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 2856da24b78SKyungmin Park if (card->csd.structure == 3) { 286f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 287a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 2888fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 289f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 2906da24b78SKyungmin Park err = -EINVAL; 2916da24b78SKyungmin Park goto out; 2926da24b78SKyungmin Park } 2936da24b78SKyungmin Park } 2946da24b78SKyungmin Park 2956da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 2966636bad8SYuvaraj Kumar C D if (card->ext_csd.rev > 7) { 297a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD revision %d\n", 2986da24b78SKyungmin Park mmc_hostname(card->host), card->ext_csd.rev); 29900cedfa6SFlorin Malita err = -EINVAL; 30000cedfa6SFlorin Malita goto out; 301d7604d76SPierre Ossman } 302d7604d76SPierre Ossman 303f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 304f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 305f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 306f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 307b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 3087ea239d9SPierre Ossman card->ext_csd.sectors = 3097ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 3107ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 3117ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 3127ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 313fc8a0985SHanumath Prasad 314fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 315fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 3167ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 317d7604d76SPierre Ossman } 31896cf5f02SSeungwon Jeon 319f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 32096cf5f02SSeungwon Jeon mmc_select_card_type(card); 3217ea239d9SPierre Ossman 322f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 323f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 324f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 325f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 326f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 327b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 328b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 329371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 330371a689fSAndrei Warkentin 331371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 332371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 333b1ebe384SJarkko Lavinen 334b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 335b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 336b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 337b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 338dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 339dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 340dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 341dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 342dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 343dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 344f4c5522bSAndrei Warkentin 345f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 346371a689fSAndrei Warkentin 347371a689fSAndrei Warkentin /* 348371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 349371a689fSAndrei Warkentin * multiples of 128K. 350371a689fSAndrei Warkentin */ 351e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 352e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 353e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 354e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 355e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 356add710eaSJohan Rudholm "boot%d", idx, true, 357add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 358e0c368d5SNamjae Jeon } 359e0c368d5SNamjae Jeon } 360b1ebe384SJarkko Lavinen } 361b1ebe384SJarkko Lavinen 362f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 363dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 364f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 365f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 366f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 367f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 368f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 369f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 370f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 371f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 372836dc2feSPhilip Rakity card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 373dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 374709de99dSChuanxiao Dong /* 375709de99dSChuanxiao Dong * Enhanced area feature support -- check whether the eMMC 376709de99dSChuanxiao Dong * card has the Enhanced area enabled. If so, export enhanced 377709de99dSChuanxiao Dong * area offset and size to user by adding sysfs interface. 378709de99dSChuanxiao Dong */ 379709de99dSChuanxiao Dong if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 380709de99dSChuanxiao Dong (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 381e0c368d5SNamjae Jeon hc_erase_grp_sz = 382709de99dSChuanxiao Dong ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 383e0c368d5SNamjae Jeon hc_wp_grp_sz = 384709de99dSChuanxiao Dong ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 385709de99dSChuanxiao Dong 386709de99dSChuanxiao Dong card->ext_csd.enhanced_area_en = 1; 387709de99dSChuanxiao Dong /* 388709de99dSChuanxiao Dong * calculate the enhanced data area offset, in bytes 389709de99dSChuanxiao Dong */ 390709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = 391709de99dSChuanxiao Dong (ext_csd[139] << 24) + (ext_csd[138] << 16) + 392709de99dSChuanxiao Dong (ext_csd[137] << 8) + ext_csd[136]; 393709de99dSChuanxiao Dong if (mmc_card_blockaddr(card)) 394709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset <<= 9; 395709de99dSChuanxiao Dong /* 396709de99dSChuanxiao Dong * calculate the enhanced data area size, in kilobytes 397709de99dSChuanxiao Dong */ 398709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = 399709de99dSChuanxiao Dong (ext_csd[142] << 16) + (ext_csd[141] << 8) + 400709de99dSChuanxiao Dong ext_csd[140]; 401709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size *= 402709de99dSChuanxiao Dong (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 403709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size <<= 9; 404709de99dSChuanxiao Dong } else { 405709de99dSChuanxiao Dong /* 406709de99dSChuanxiao Dong * If the enhanced area is not enabled, disable these 407709de99dSChuanxiao Dong * device attributes. 408709de99dSChuanxiao Dong */ 409709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 410709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 411709de99dSChuanxiao Dong } 412e0c368d5SNamjae Jeon 413e0c368d5SNamjae Jeon /* 414e0c368d5SNamjae Jeon * General purpose partition feature support -- 415e0c368d5SNamjae Jeon * If ext_csd has the size of general purpose partitions, 416e0c368d5SNamjae Jeon * set size, part_cfg, partition name in mmc_part. 417e0c368d5SNamjae Jeon */ 418e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 419e0c368d5SNamjae Jeon EXT_CSD_PART_SUPPORT_PART_EN) { 420e0c368d5SNamjae Jeon if (card->ext_csd.enhanced_area_en != 1) { 421e0c368d5SNamjae Jeon hc_erase_grp_sz = 422e0c368d5SNamjae Jeon ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 423e0c368d5SNamjae Jeon hc_wp_grp_sz = 424e0c368d5SNamjae Jeon ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 425e0c368d5SNamjae Jeon 426e0c368d5SNamjae Jeon card->ext_csd.enhanced_area_en = 1; 427e0c368d5SNamjae Jeon } 428e0c368d5SNamjae Jeon 429e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 430e0c368d5SNamjae Jeon if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 431e0c368d5SNamjae Jeon !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 432e0c368d5SNamjae Jeon !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 433e0c368d5SNamjae Jeon continue; 434e0c368d5SNamjae Jeon part_size = 435e0c368d5SNamjae Jeon (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 436e0c368d5SNamjae Jeon << 16) + 437e0c368d5SNamjae Jeon (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 438e0c368d5SNamjae Jeon << 8) + 439e0c368d5SNamjae Jeon ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 440e0c368d5SNamjae Jeon part_size *= (size_t)(hc_erase_grp_sz * 441e0c368d5SNamjae Jeon hc_wp_grp_sz); 442e0c368d5SNamjae Jeon mmc_part_add(card, part_size << 19, 443e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 444add710eaSJohan Rudholm "gp%d", idx, false, 445add710eaSJohan Rudholm MMC_BLK_DATA_AREA_GP); 446e0c368d5SNamjae Jeon } 447e0c368d5SNamjae Jeon } 448dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 449dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 450dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 451dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 452dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 453dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 454dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 455dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 456add710eaSJohan Rudholm 457add710eaSJohan Rudholm /* 458add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 459add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 460add710eaSJohan Rudholm * take into account the value of boot_locked below. 461add710eaSJohan Rudholm */ 462add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 463add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 46460443712SFredrik Soderstedt 46560443712SFredrik Soderstedt /* Save power class values */ 46660443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_195 = 46760443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_195]; 46860443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_195 = 46960443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_195]; 47060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_360 = 47160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_360]; 47260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_360 = 47360443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_360]; 47460443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_195 = 47560443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_195]; 47660443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_360 = 47760443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_360]; 47860443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_195 = 47960443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; 48060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_360 = 48160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; 482dfe86cbaSAdrian Hunter } 483dfe86cbaSAdrian Hunter 484b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 485950d56acSJaehoon Chung /* check whether the eMMC card supports BKOPS */ 486950d56acSJaehoon Chung if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { 487950d56acSJaehoon Chung card->ext_csd.bkops = 1; 488950d56acSJaehoon Chung card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN]; 489950d56acSJaehoon Chung card->ext_csd.raw_bkops_status = 490950d56acSJaehoon Chung ext_csd[EXT_CSD_BKOPS_STATUS]; 491950d56acSJaehoon Chung if (!card->ext_csd.bkops_en) 492950d56acSJaehoon Chung pr_info("%s: BKOPS_EN bit is not set\n", 493950d56acSJaehoon Chung mmc_hostname(card->host)); 494950d56acSJaehoon Chung } 495950d56acSJaehoon Chung 496eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 497eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { 498eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 499eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 500eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 501eb0d8f13SJaehoon Chung else 502eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 503eb0d8f13SJaehoon Chung /* 504eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 505eb0d8f13SJaehoon Chung * a command interrupted by HPI 506eb0d8f13SJaehoon Chung */ 507eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 508eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 509eb0d8f13SJaehoon Chung } 510eb0d8f13SJaehoon Chung 511f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 512b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 513090d25feSLoic Pallardy 514090d25feSLoic Pallardy /* 515090d25feSLoic Pallardy * RPMB regions are defined in multiples of 128K. 516090d25feSLoic Pallardy */ 517090d25feSLoic Pallardy card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; 518d0123ccaSBalaji T K if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { 519090d25feSLoic Pallardy mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, 520090d25feSLoic Pallardy EXT_CSD_PART_CONFIG_ACC_RPMB, 521090d25feSLoic Pallardy "rpmb", 0, false, 522090d25feSLoic Pallardy MMC_BLK_DATA_AREA_RPMB); 523090d25feSLoic Pallardy } 524b2499518SAdrian Hunter } 525f4c5522bSAndrei Warkentin 5265238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 527dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 528dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 529dfe86cbaSAdrian Hunter else 530dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 531dfe86cbaSAdrian Hunter 532336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 533bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 534336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 535336c716aSSeungwon Jeon 536b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 537b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 538bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 539bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 540b23cf0bdSSeungwon Jeon 541881d1c25SSeungwon Jeon card->ext_csd.cache_size = 542881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 543881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 544881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 545881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 5464265900eSSaugata Das 5474265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 5484265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 5494265900eSSaugata Das else 5504265900eSSaugata Das card->ext_csd.data_sector_size = 512; 5514265900eSSaugata Das 5524265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 5534265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 5544265900eSSaugata Das card->ext_csd.data_tag_unit_size = 5554265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 5564265900eSSaugata Das (card->ext_csd.data_sector_size); 5574265900eSSaugata Das } else { 5584265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 5594265900eSSaugata Das } 560abd9ac14SSeungwon Jeon 561abd9ac14SSeungwon Jeon card->ext_csd.max_packed_writes = 562abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_WRITES]; 563abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads = 564abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_READS]; 565a5075eb9SSaugata Das } else { 566a5075eb9SSaugata Das card->ext_csd.data_sector_size = 512; 567336c716aSSeungwon Jeon } 568881d1c25SSeungwon Jeon 5697ea239d9SPierre Ossman out: 57008ee80ccSPhilip Rakity return err; 57108ee80ccSPhilip Rakity } 5727ea239d9SPierre Ossman 57308ee80ccSPhilip Rakity static inline void mmc_free_ext_csd(u8 *ext_csd) 57408ee80ccSPhilip Rakity { 57508ee80ccSPhilip Rakity kfree(ext_csd); 57608ee80ccSPhilip Rakity } 57708ee80ccSPhilip Rakity 57808ee80ccSPhilip Rakity 579f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 58008ee80ccSPhilip Rakity { 58108ee80ccSPhilip Rakity u8 *bw_ext_csd; 58208ee80ccSPhilip Rakity int err; 58308ee80ccSPhilip Rakity 584f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 585f39b2dd9SPhilip Rakity return 0; 58608ee80ccSPhilip Rakity 587f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 588f39b2dd9SPhilip Rakity 589f39b2dd9SPhilip Rakity if (err || bw_ext_csd == NULL) { 59008ee80ccSPhilip Rakity err = -EINVAL; 59108ee80ccSPhilip Rakity goto out; 59208ee80ccSPhilip Rakity } 59308ee80ccSPhilip Rakity 59408ee80ccSPhilip Rakity /* only compare read only fields */ 595dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 59608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 597f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 59808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 599f39b2dd9SPhilip Rakity (card->ext_csd.rev == 60008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 601f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 60208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 603f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 60408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 605f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 60608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 607f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 60808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 609f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 61008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 611f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 61208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 613f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 61408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 615f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 61608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 617f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 61808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 619f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 62008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 621f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 622f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 623f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 624f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 625f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 626f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 627f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 62860443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && 62960443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_195 == 63060443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && 63160443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_195 == 63260443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && 63360443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_360 == 63460443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && 63560443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_360 == 63660443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && 63760443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_195 == 63860443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && 63960443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_360 == 64060443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && 64160443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_195 == 64260443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && 64360443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_360 == 64460443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360])); 64508ee80ccSPhilip Rakity if (err) 64608ee80ccSPhilip Rakity err = -EINVAL; 64708ee80ccSPhilip Rakity 64808ee80ccSPhilip Rakity out: 64908ee80ccSPhilip Rakity mmc_free_ext_csd(bw_ext_csd); 6507ea239d9SPierre Ossman return err; 6517ea239d9SPierre Ossman } 6527ea239d9SPierre Ossman 65351ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 65451ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 65551ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 65651ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 65751ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 658dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 659dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 66051ec92e2SPierre Ossman MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); 66151ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 66251ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 66351ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 66451ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 66551e7e8b6SBernie Thompson MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); 66651ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 667709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 668709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 669709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 670188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 671188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 67251ec92e2SPierre Ossman 67351ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 67451ec92e2SPierre Ossman &dev_attr_cid.attr, 67551ec92e2SPierre Ossman &dev_attr_csd.attr, 67651ec92e2SPierre Ossman &dev_attr_date.attr, 677dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 678dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 67951ec92e2SPierre Ossman &dev_attr_fwrev.attr, 68051ec92e2SPierre Ossman &dev_attr_hwrev.attr, 68151ec92e2SPierre Ossman &dev_attr_manfid.attr, 68251ec92e2SPierre Ossman &dev_attr_name.attr, 68351ec92e2SPierre Ossman &dev_attr_oemid.attr, 68451e7e8b6SBernie Thompson &dev_attr_prv.attr, 68551ec92e2SPierre Ossman &dev_attr_serial.attr, 686709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 687709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 688188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 689188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 69051ec92e2SPierre Ossman NULL, 69151ec92e2SPierre Ossman }; 69251ec92e2SPierre Ossman 69351ec92e2SPierre Ossman static struct attribute_group mmc_std_attr_group = { 69451ec92e2SPierre Ossman .attrs = mmc_std_attrs, 69551ec92e2SPierre Ossman }; 69651ec92e2SPierre Ossman 697a4dbd674SDavid Brownell static const struct attribute_group *mmc_attr_groups[] = { 69851ec92e2SPierre Ossman &mmc_std_attr_group, 69951ec92e2SPierre Ossman NULL, 70051ec92e2SPierre Ossman }; 70151ec92e2SPierre Ossman 70251ec92e2SPierre Ossman static struct device_type mmc_type = { 70351ec92e2SPierre Ossman .groups = mmc_attr_groups, 70451ec92e2SPierre Ossman }; 70551ec92e2SPierre Ossman 7067ea239d9SPierre Ossman /* 707b87d8dbfSGirish K S * Select the PowerClass for the current bus width 708b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 709b87d8dbfSGirish K S * extended CSD register, select it by executing the 710b87d8dbfSGirish K S * mmc_switch command. 711b87d8dbfSGirish K S */ 712b87d8dbfSGirish K S static int mmc_select_powerclass(struct mmc_card *card, 71360443712SFredrik Soderstedt unsigned int bus_width) 714b87d8dbfSGirish K S { 715b87d8dbfSGirish K S int err = 0; 71660443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 717b87d8dbfSGirish K S struct mmc_host *host; 718b87d8dbfSGirish K S 719b87d8dbfSGirish K S BUG_ON(!card); 720b87d8dbfSGirish K S 721b87d8dbfSGirish K S host = card->host; 722b87d8dbfSGirish K S BUG_ON(!host); 723b87d8dbfSGirish K S 724b87d8dbfSGirish K S /* Power class selection is supported for versions >= 4.0 */ 725b87d8dbfSGirish K S if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 726b87d8dbfSGirish K S return 0; 727b87d8dbfSGirish K S 728b87d8dbfSGirish K S /* Power class values are defined only for 4/8 bit bus */ 729b87d8dbfSGirish K S if (bus_width == EXT_CSD_BUS_WIDTH_1) 730b87d8dbfSGirish K S return 0; 731b87d8dbfSGirish K S 732b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 733b87d8dbfSGirish K S case MMC_VDD_165_195: 734b87d8dbfSGirish K S if (host->ios.clock <= 26000000) 73560443712SFredrik Soderstedt pwrclass_val = card->ext_csd.raw_pwr_cl_26_195; 736b87d8dbfSGirish K S else if (host->ios.clock <= 52000000) 73760443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 73860443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_195 : 73960443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_195; 740b87d8dbfSGirish K S else if (host->ios.clock <= 200000000) 74160443712SFredrik Soderstedt pwrclass_val = card->ext_csd.raw_pwr_cl_200_195; 742b87d8dbfSGirish K S break; 74393fc5a47SSubhash Jadavani case MMC_VDD_27_28: 74493fc5a47SSubhash Jadavani case MMC_VDD_28_29: 74593fc5a47SSubhash Jadavani case MMC_VDD_29_30: 74693fc5a47SSubhash Jadavani case MMC_VDD_30_31: 74793fc5a47SSubhash Jadavani case MMC_VDD_31_32: 748b87d8dbfSGirish K S case MMC_VDD_32_33: 749b87d8dbfSGirish K S case MMC_VDD_33_34: 750b87d8dbfSGirish K S case MMC_VDD_34_35: 751b87d8dbfSGirish K S case MMC_VDD_35_36: 752b87d8dbfSGirish K S if (host->ios.clock <= 26000000) 75360443712SFredrik Soderstedt pwrclass_val = card->ext_csd.raw_pwr_cl_26_360; 754b87d8dbfSGirish K S else if (host->ios.clock <= 52000000) 75560443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 75660443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_360 : 75760443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_360; 758b87d8dbfSGirish K S else if (host->ios.clock <= 200000000) 75960443712SFredrik Soderstedt pwrclass_val = card->ext_csd.raw_pwr_cl_200_360; 760b87d8dbfSGirish K S break; 761b87d8dbfSGirish K S default: 762b87d8dbfSGirish K S pr_warning("%s: Voltage range not supported " 763b87d8dbfSGirish K S "for power class.\n", mmc_hostname(host)); 764b87d8dbfSGirish K S return -EINVAL; 765b87d8dbfSGirish K S } 766b87d8dbfSGirish K S 767b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 768b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 769b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 770b87d8dbfSGirish K S else 771b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 772b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 773b87d8dbfSGirish K S 774b87d8dbfSGirish K S /* If the power class is different from the default value */ 775b87d8dbfSGirish K S if (pwrclass_val > 0) { 776b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 777b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 778b87d8dbfSGirish K S pwrclass_val, 77971fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 780b87d8dbfSGirish K S } 781b87d8dbfSGirish K S 782b87d8dbfSGirish K S return err; 783b87d8dbfSGirish K S } 784b87d8dbfSGirish K S 785b87d8dbfSGirish K S /* 786a4924c71SGirish K S * Selects the desired buswidth and switch to the HS200 mode 787a4924c71SGirish K S * if bus width set without error 788a4924c71SGirish K S */ 789a4924c71SGirish K S static int mmc_select_hs200(struct mmc_card *card) 790a4924c71SGirish K S { 79110942aa4SSeungwon Jeon int idx, err = -EINVAL; 792a4924c71SGirish K S struct mmc_host *host; 793a4924c71SGirish K S static unsigned ext_csd_bits[] = { 794a4924c71SGirish K S EXT_CSD_BUS_WIDTH_4, 795a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 796a4924c71SGirish K S }; 797a4924c71SGirish K S static unsigned bus_widths[] = { 798a4924c71SGirish K S MMC_BUS_WIDTH_4, 799a4924c71SGirish K S MMC_BUS_WIDTH_8, 800a4924c71SGirish K S }; 801a4924c71SGirish K S 802a4924c71SGirish K S BUG_ON(!card); 803a4924c71SGirish K S 804a4924c71SGirish K S host = card->host; 805a4924c71SGirish K S 806a4924c71SGirish K S if (card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_2V && 807a4924c71SGirish K S host->caps2 & MMC_CAP2_HS200_1_2V_SDR) 808567c8903SJohan Rudholm err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 80910942aa4SSeungwon Jeon 81010942aa4SSeungwon Jeon if (err && card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_8V && 81110942aa4SSeungwon Jeon host->caps2 & MMC_CAP2_HS200_1_8V_SDR) 812567c8903SJohan Rudholm err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 813a4924c71SGirish K S 814a4924c71SGirish K S /* If fails try again during next card power cycle */ 815a4924c71SGirish K S if (err) 816a4924c71SGirish K S goto err; 817a4924c71SGirish K S 818a4924c71SGirish K S idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 1 : 0; 819a4924c71SGirish K S 820a4924c71SGirish K S /* 821a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 822a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 823a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 824a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 825a4924c71SGirish K S */ 826a4924c71SGirish K S for (; idx >= 0; idx--) { 827a4924c71SGirish K S 828a4924c71SGirish K S /* 829a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 830a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 831a4924c71SGirish K S * mmc switch command returns error then switch to 832a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 833a4924c71SGirish K S * bus width on the host. 834a4924c71SGirish K S */ 835a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 836a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 837a4924c71SGirish K S ext_csd_bits[idx], 838a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 839a4924c71SGirish K S if (err) 840a4924c71SGirish K S continue; 841a4924c71SGirish K S 842a4924c71SGirish K S mmc_set_bus_width(card->host, bus_widths[idx]); 843a4924c71SGirish K S 844a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 845a4924c71SGirish K S err = mmc_compare_ext_csds(card, bus_widths[idx]); 846a4924c71SGirish K S else 847a4924c71SGirish K S err = mmc_bus_test(card, bus_widths[idx]); 848a4924c71SGirish K S if (!err) 849a4924c71SGirish K S break; 850a4924c71SGirish K S } 851a4924c71SGirish K S 852a4924c71SGirish K S /* switch to HS200 mode if bus width set successfully */ 853a4924c71SGirish K S if (!err) 854a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 855a4924c71SGirish K S EXT_CSD_HS_TIMING, 2, 0); 856a4924c71SGirish K S err: 857a4924c71SGirish K S return err; 858a4924c71SGirish K S } 859a4924c71SGirish K S 860a4924c71SGirish K S /* 8616abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 8626abaa0c9SPierre Ossman * 8638769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 8646abaa0c9SPierre Ossman * we're trying to reinitialise. 8657ea239d9SPierre Ossman */ 8668c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 8676abaa0c9SPierre Ossman struct mmc_card *oldcard) 8687ea239d9SPierre Ossman { 8697ea239d9SPierre Ossman struct mmc_card *card; 87025d5c699SPhilip Rakity int err, ddr = 0; 8717ea239d9SPierre Ossman u32 cid[4]; 8727ea239d9SPierre Ossman unsigned int max_dtr; 873b676f039SPhilip Rakity u32 rocr; 87408ee80ccSPhilip Rakity u8 *ext_csd = NULL; 8757ea239d9SPierre Ossman 8767ea239d9SPierre Ossman BUG_ON(!host); 877d84075c8SPierre Ossman WARN_ON(!host->claimed); 8787ea239d9SPierre Ossman 87944669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 88044669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 88144669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 88244669034SStefan Nilsson XK 8837ea239d9SPierre Ossman /* 8847ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 8857ea239d9SPierre Ossman * need to tell some cards to go back to the idle 8867ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 8877ea239d9SPierre Ossman * respond. 888c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 8897ea239d9SPierre Ossman */ 8907ea239d9SPierre Ossman mmc_go_idle(host); 8917ea239d9SPierre Ossman 8927ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 893b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 89417b0429dSPierre Ossman if (err) 8956abaa0c9SPierre Ossman goto err; 8967ea239d9SPierre Ossman 8977ea239d9SPierre Ossman /* 898af517150SDavid Brownell * For SPI, enable CRC as appropriate. 899af517150SDavid Brownell */ 900af517150SDavid Brownell if (mmc_host_is_spi(host)) { 901af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 902af517150SDavid Brownell if (err) 903af517150SDavid Brownell goto err; 904af517150SDavid Brownell } 905af517150SDavid Brownell 906af517150SDavid Brownell /* 9077ea239d9SPierre Ossman * Fetch CID from card. 9087ea239d9SPierre Ossman */ 909af517150SDavid Brownell if (mmc_host_is_spi(host)) 910af517150SDavid Brownell err = mmc_send_cid(host, cid); 911af517150SDavid Brownell else 9127ea239d9SPierre Ossman err = mmc_all_send_cid(host, cid); 91317b0429dSPierre Ossman if (err) 9147ea239d9SPierre Ossman goto err; 9157ea239d9SPierre Ossman 9166abaa0c9SPierre Ossman if (oldcard) { 917adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 918adf66a0dSPierre Ossman err = -ENOENT; 9196abaa0c9SPierre Ossman goto err; 920adf66a0dSPierre Ossman } 9216abaa0c9SPierre Ossman 9226abaa0c9SPierre Ossman card = oldcard; 9236abaa0c9SPierre Ossman } else { 9247ea239d9SPierre Ossman /* 9257ea239d9SPierre Ossman * Allocate card structure. 9267ea239d9SPierre Ossman */ 92751ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 928adf66a0dSPierre Ossman if (IS_ERR(card)) { 929adf66a0dSPierre Ossman err = PTR_ERR(card); 9307ea239d9SPierre Ossman goto err; 931adf66a0dSPierre Ossman } 9327ea239d9SPierre Ossman 9337ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 9347ea239d9SPierre Ossman card->rca = 1; 9357ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 9366abaa0c9SPierre Ossman } 9377ea239d9SPierre Ossman 9387ea239d9SPierre Ossman /* 939af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 9407ea239d9SPierre Ossman */ 941af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 9427ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 94317b0429dSPierre Ossman if (err) 9447ea239d9SPierre Ossman goto free_card; 9457ea239d9SPierre Ossman 9467ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 947af517150SDavid Brownell } 9487ea239d9SPierre Ossman 9496abaa0c9SPierre Ossman if (!oldcard) { 9507ea239d9SPierre Ossman /* 9517ea239d9SPierre Ossman * Fetch CSD from card. 9527ea239d9SPierre Ossman */ 9537ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 95417b0429dSPierre Ossman if (err) 9557ea239d9SPierre Ossman goto free_card; 9567ea239d9SPierre Ossman 957bd766312SPierre Ossman err = mmc_decode_csd(card); 958adf66a0dSPierre Ossman if (err) 959bd766312SPierre Ossman goto free_card; 960bd766312SPierre Ossman err = mmc_decode_cid(card); 961adf66a0dSPierre Ossman if (err) 962bd766312SPierre Ossman goto free_card; 9636abaa0c9SPierre Ossman } 9647ea239d9SPierre Ossman 9657ea239d9SPierre Ossman /* 96689a73cf5SPierre Ossman * Select card, as all following commands rely on that. 9677ea239d9SPierre Ossman */ 968af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 9697ea239d9SPierre Ossman err = mmc_select_card(card); 97017b0429dSPierre Ossman if (err) 9717ea239d9SPierre Ossman goto free_card; 972af517150SDavid Brownell } 9737ea239d9SPierre Ossman 9746abaa0c9SPierre Ossman if (!oldcard) { 97589a73cf5SPierre Ossman /* 976af517150SDavid Brownell * Fetch and process extended CSD. 97789a73cf5SPierre Ossman */ 97808ee80ccSPhilip Rakity 97908ee80ccSPhilip Rakity err = mmc_get_ext_csd(card, &ext_csd); 98008ee80ccSPhilip Rakity if (err) 98108ee80ccSPhilip Rakity goto free_card; 98208ee80ccSPhilip Rakity err = mmc_read_ext_csd(card, ext_csd); 98317b0429dSPierre Ossman if (err) 9847ea239d9SPierre Ossman goto free_card; 985b676f039SPhilip Rakity 986b676f039SPhilip Rakity /* If doing byte addressing, check if required to do sector 987b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 988b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 989b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 990b676f039SPhilip Rakity */ 991b676f039SPhilip Rakity if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) 992b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 993b676f039SPhilip Rakity 994dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 995dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 9966abaa0c9SPierre Ossman } 9977ea239d9SPierre Ossman 9987ea239d9SPierre Ossman /* 999709de99dSChuanxiao Dong * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF 1000709de99dSChuanxiao Dong * bit. This bit will be lost every time after a reset or power off. 1001709de99dSChuanxiao Dong */ 100283bb24aaSAdrian Hunter if (card->ext_csd.enhanced_area_en || 100383bb24aaSAdrian Hunter (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { 1004709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1005b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1006b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1007709de99dSChuanxiao Dong 1008709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1009709de99dSChuanxiao Dong goto free_card; 1010709de99dSChuanxiao Dong 1011709de99dSChuanxiao Dong if (err) { 1012709de99dSChuanxiao Dong err = 0; 1013709de99dSChuanxiao Dong /* 1014709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1015709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1016709de99dSChuanxiao Dong * during next time reinit 1017709de99dSChuanxiao Dong */ 1018709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1019709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1020709de99dSChuanxiao Dong } else { 1021709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1022709de99dSChuanxiao Dong /* 1023709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1024709de99dSChuanxiao Dong * This will affect the erase size, so 1025709de99dSChuanxiao Dong * here need to reset erase size 1026709de99dSChuanxiao Dong */ 1027709de99dSChuanxiao Dong mmc_set_erase_size(card); 1028709de99dSChuanxiao Dong } 1029709de99dSChuanxiao Dong } 1030709de99dSChuanxiao Dong 1031709de99dSChuanxiao Dong /* 103241e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 103341e2a489SPhilip Rakity */ 1034371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1035371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1036371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1037371a689fSAndrei Warkentin card->ext_csd.part_config, 1038371a689fSAndrei Warkentin card->ext_csd.part_time); 1039371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1040371a689fSAndrei Warkentin goto free_card; 104141e2a489SPhilip Rakity } 104241e2a489SPhilip Rakity 104341e2a489SPhilip Rakity /* 1044bec8726aSGirish K S * If the host supports the power_off_notify capability then 1045bec8726aSGirish K S * set the notification byte in the ext_csd register of device 1046bec8726aSGirish K S */ 1047bec8726aSGirish K S if ((host->caps2 & MMC_CAP2_POWEROFF_NOTIFY) && 1048a80f1627SGirish K S (card->ext_csd.rev >= 6)) { 1049bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1050bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1051bec8726aSGirish K S EXT_CSD_POWER_ON, 1052bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1053bec8726aSGirish K S if (err && err != -EBADMSG) 1054bec8726aSGirish K S goto free_card; 1055bec8726aSGirish K S 105696a85d54SGirish K S /* 105796a85d54SGirish K S * The err can be -EBADMSG or 0, 105896a85d54SGirish K S * so check for success and update the flag 105996a85d54SGirish K S */ 1060bec8726aSGirish K S if (!err) 1061e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 106296a85d54SGirish K S } 1063bec8726aSGirish K S 1064bec8726aSGirish K S /* 106589a73cf5SPierre Ossman * Activate high speed (if supported) 106689a73cf5SPierre Ossman */ 1067a4924c71SGirish K S if (card->ext_csd.hs_max_dtr != 0) { 1068a4924c71SGirish K S err = 0; 1069a4924c71SGirish K S if (card->ext_csd.hs_max_dtr > 52000000 && 1070a4924c71SGirish K S host->caps2 & MMC_CAP2_HS200) 1071a4924c71SGirish K S err = mmc_select_hs200(card); 1072a4924c71SGirish K S else if (host->caps & MMC_CAP_MMC_HIGHSPEED) 107389a73cf5SPierre Ossman err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10747488e924SGirish K S EXT_CSD_HS_TIMING, 1, 10757488e924SGirish K S card->ext_csd.generic_cmd6_time); 1076a4924c71SGirish K S 1077ef0b27d4SAdrian Hunter if (err && err != -EBADMSG) 107889a73cf5SPierre Ossman goto free_card; 107989a73cf5SPierre Ossman 1080ef0b27d4SAdrian Hunter if (err) { 1081a3c76eb9SGirish K S pr_warning("%s: switch to highspeed failed\n", 1082ef0b27d4SAdrian Hunter mmc_hostname(card->host)); 1083ef0b27d4SAdrian Hunter err = 0; 1084ef0b27d4SAdrian Hunter } else { 1085a4924c71SGirish K S if (card->ext_csd.hs_max_dtr > 52000000 && 1086a4924c71SGirish K S host->caps2 & MMC_CAP2_HS200) { 1087a4924c71SGirish K S mmc_card_set_hs200(card); 1088a4924c71SGirish K S mmc_set_timing(card->host, 1089a4924c71SGirish K S MMC_TIMING_MMC_HS200); 1090a4924c71SGirish K S } else { 109189a73cf5SPierre Ossman mmc_card_set_highspeed(card); 109289a73cf5SPierre Ossman mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 109389a73cf5SPierre Ossman } 1094ef0b27d4SAdrian Hunter } 1095a4924c71SGirish K S } 109689a73cf5SPierre Ossman 109789a73cf5SPierre Ossman /* 10987ea239d9SPierre Ossman * Compute bus speed. 10997ea239d9SPierre Ossman */ 11007ea239d9SPierre Ossman max_dtr = (unsigned int)-1; 11017ea239d9SPierre Ossman 1102a4924c71SGirish K S if (mmc_card_highspeed(card) || mmc_card_hs200(card)) { 11037ea239d9SPierre Ossman if (max_dtr > card->ext_csd.hs_max_dtr) 11047ea239d9SPierre Ossman max_dtr = card->ext_csd.hs_max_dtr; 1105ccb52a00SAl Cooper if (mmc_card_highspeed(card) && (max_dtr > 52000000)) 1106ccb52a00SAl Cooper max_dtr = 52000000; 11077ea239d9SPierre Ossman } else if (max_dtr > card->csd.max_dtr) { 11087ea239d9SPierre Ossman max_dtr = card->csd.max_dtr; 11097ea239d9SPierre Ossman } 11107ea239d9SPierre Ossman 11117ea239d9SPierre Ossman mmc_set_clock(host, max_dtr); 11127ea239d9SPierre Ossman 111389a73cf5SPierre Ossman /* 11140f8d8ea6SAdrian Hunter * Indicate DDR mode (if supported). 1115dfc13e84SHanumath Prasad */ 1116dfc13e84SHanumath Prasad if (mmc_card_highspeed(card)) { 1117dfc13e84SHanumath Prasad if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) 11184c4cb171SPhilip Rakity && ((host->caps & (MMC_CAP_1_8V_DDR | 11194c4cb171SPhilip Rakity MMC_CAP_UHS_DDR50)) 11204c4cb171SPhilip Rakity == (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50))) 112149e3b5a4SAdrian Hunter ddr = MMC_1_8V_DDR_MODE; 1122dfc13e84SHanumath Prasad else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) 11234c4cb171SPhilip Rakity && ((host->caps & (MMC_CAP_1_2V_DDR | 11244c4cb171SPhilip Rakity MMC_CAP_UHS_DDR50)) 11254c4cb171SPhilip Rakity == (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50))) 112649e3b5a4SAdrian Hunter ddr = MMC_1_2V_DDR_MODE; 1127dfc13e84SHanumath Prasad } 1128dfc13e84SHanumath Prasad 1129dfc13e84SHanumath Prasad /* 1130a4924c71SGirish K S * Indicate HS200 SDR mode (if supported). 1131a4924c71SGirish K S */ 1132a4924c71SGirish K S if (mmc_card_hs200(card)) { 1133a4924c71SGirish K S u32 ext_csd_bits; 1134a4924c71SGirish K S u32 bus_width = card->host->ios.bus_width; 1135a4924c71SGirish K S 1136a4924c71SGirish K S /* 1137a4924c71SGirish K S * For devices supporting HS200 mode, the bus width has 1138a4924c71SGirish K S * to be set before executing the tuning function. If 1139a4924c71SGirish K S * set before tuning, then device will respond with CRC 1140a4924c71SGirish K S * errors for responses on CMD line. So for HS200 the 1141a4924c71SGirish K S * sequence will be 1142a4924c71SGirish K S * 1. set bus width 4bit / 8 bit (1 bit not supported) 1143a4924c71SGirish K S * 2. switch to HS200 mode 1144a4924c71SGirish K S * 3. set the clock to > 52Mhz <=200MHz and 1145a4924c71SGirish K S * 4. execute tuning for HS200 1146a4924c71SGirish K S */ 1147a4924c71SGirish K S if ((host->caps2 & MMC_CAP2_HS200) && 114852d0974eSSubhash Jadavani card->host->ops->execute_tuning) { 114952d0974eSSubhash Jadavani mmc_host_clk_hold(card->host); 1150a4924c71SGirish K S err = card->host->ops->execute_tuning(card->host, 1151a4924c71SGirish K S MMC_SEND_TUNING_BLOCK_HS200); 115252d0974eSSubhash Jadavani mmc_host_clk_release(card->host); 115352d0974eSSubhash Jadavani } 1154a4924c71SGirish K S if (err) { 1155a4924c71SGirish K S pr_warning("%s: tuning execution failed\n", 1156a4924c71SGirish K S mmc_hostname(card->host)); 1157a4924c71SGirish K S goto err; 1158a4924c71SGirish K S } 1159a4924c71SGirish K S 1160a4924c71SGirish K S ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 1161a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 116260443712SFredrik Soderstedt err = mmc_select_powerclass(card, ext_csd_bits); 116393fc5a47SSubhash Jadavani if (err) 116487f761b6SVenkatraman S pr_warning("%s: power class selection to bus width %d" 116587f761b6SVenkatraman S " failed\n", mmc_hostname(card->host), 116687f761b6SVenkatraman S 1 << bus_width); 1167a4924c71SGirish K S } 1168a4924c71SGirish K S 1169a4924c71SGirish K S /* 11700f8d8ea6SAdrian Hunter * Activate wide bus and DDR (if supported). 117189a73cf5SPierre Ossman */ 1172a4924c71SGirish K S if (!mmc_card_hs200(card) && 11737488e924SGirish K S (card->csd.mmca_vsn >= CSD_SPEC_VER_4) && 1174b30f8af3SJarkko Lavinen (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { 117522113efdSAries Lee static unsigned ext_csd_bits[][2] = { 117622113efdSAries Lee { EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 }, 117722113efdSAries Lee { EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 }, 117822113efdSAries Lee { EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 }, 117922113efdSAries Lee }; 118022113efdSAries Lee static unsigned bus_widths[] = { 118122113efdSAries Lee MMC_BUS_WIDTH_8, 118222113efdSAries Lee MMC_BUS_WIDTH_4, 118322113efdSAries Lee MMC_BUS_WIDTH_1 118422113efdSAries Lee }; 118522113efdSAries Lee unsigned idx, bus_width = 0; 1186b30f8af3SJarkko Lavinen 118722113efdSAries Lee if (host->caps & MMC_CAP_8_BIT_DATA) 118822113efdSAries Lee idx = 0; 1189dfc13e84SHanumath Prasad else 119022113efdSAries Lee idx = 1; 119122113efdSAries Lee for (; idx < ARRAY_SIZE(bus_widths); idx++) { 119222113efdSAries Lee bus_width = bus_widths[idx]; 119322113efdSAries Lee if (bus_width == MMC_BUS_WIDTH_1) 119422113efdSAries Lee ddr = 0; /* no DDR for 1-bit width */ 119560443712SFredrik Soderstedt err = mmc_select_powerclass(card, ext_csd_bits[idx][0]); 1196b87d8dbfSGirish K S if (err) 119787f761b6SVenkatraman S pr_warning("%s: power class selection to " 119887f761b6SVenkatraman S "bus width %d failed\n", 119987f761b6SVenkatraman S mmc_hostname(card->host), 120087f761b6SVenkatraman S 1 << bus_width); 1201b87d8dbfSGirish K S 120222113efdSAries Lee err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 120322113efdSAries Lee EXT_CSD_BUS_WIDTH, 1204d3a8d95dSAndrei Warkentin ext_csd_bits[idx][0], 1205b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 120622113efdSAries Lee if (!err) { 12074c4cb171SPhilip Rakity mmc_set_bus_width(card->host, bus_width); 120808ee80ccSPhilip Rakity 120922113efdSAries Lee /* 121022113efdSAries Lee * If controller can't handle bus width test, 121108ee80ccSPhilip Rakity * compare ext_csd previously read in 1 bit mode 121208ee80ccSPhilip Rakity * against ext_csd at new bus width 121322113efdSAries Lee */ 121422113efdSAries Lee if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 121508ee80ccSPhilip Rakity err = mmc_compare_ext_csds(card, 121608ee80ccSPhilip Rakity bus_width); 121708ee80ccSPhilip Rakity else 121822113efdSAries Lee err = mmc_bus_test(card, bus_width); 121922113efdSAries Lee if (!err) 122022113efdSAries Lee break; 122122113efdSAries Lee } 1222b30f8af3SJarkko Lavinen } 1223b30f8af3SJarkko Lavinen 122422113efdSAries Lee if (!err && ddr) { 122560443712SFredrik Soderstedt err = mmc_select_powerclass(card, ext_csd_bits[idx][1]); 1226b87d8dbfSGirish K S if (err) 122787f761b6SVenkatraman S pr_warning("%s: power class selection to " 122887f761b6SVenkatraman S "bus width %d ddr %d failed\n", 122987f761b6SVenkatraman S mmc_hostname(card->host), 123087f761b6SVenkatraman S 1 << bus_width, ddr); 1231b87d8dbfSGirish K S 123289a73cf5SPierre Ossman err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 123322113efdSAries Lee EXT_CSD_BUS_WIDTH, 1234d3a8d95dSAndrei Warkentin ext_csd_bits[idx][1], 1235b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 123622113efdSAries Lee } 1237ef0b27d4SAdrian Hunter if (err) { 1238a3c76eb9SGirish K S pr_warning("%s: switch to bus width %d ddr %d " 1239ef0b27d4SAdrian Hunter "failed\n", mmc_hostname(card->host), 12400f8d8ea6SAdrian Hunter 1 << bus_width, ddr); 124122113efdSAries Lee goto free_card; 124222113efdSAries Lee } else if (ddr) { 12434c4cb171SPhilip Rakity /* 12444c4cb171SPhilip Rakity * eMMC cards can support 3.3V to 1.2V i/o (vccq) 12454c4cb171SPhilip Rakity * signaling. 12464c4cb171SPhilip Rakity * 12474c4cb171SPhilip Rakity * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 12484c4cb171SPhilip Rakity * 12494c4cb171SPhilip Rakity * 1.8V vccq at 3.3V core voltage (vcc) is not required 12504c4cb171SPhilip Rakity * in the JEDEC spec for DDR. 12514c4cb171SPhilip Rakity * 12524c4cb171SPhilip Rakity * Do not force change in vccq since we are obviously 12534c4cb171SPhilip Rakity * working and no change to vccq is needed. 12544c4cb171SPhilip Rakity * 12554c4cb171SPhilip Rakity * WARNING: eMMC rules are NOT the same as SD DDR 12564c4cb171SPhilip Rakity */ 1257913047e9SGirish K S if (ddr == MMC_1_2V_DDR_MODE) { 1258567c8903SJohan Rudholm err = __mmc_set_signal_voltage(host, 1259567c8903SJohan Rudholm MMC_SIGNAL_VOLTAGE_120); 12604c4cb171SPhilip Rakity if (err) 12614c4cb171SPhilip Rakity goto err; 12624c4cb171SPhilip Rakity } 12630f8d8ea6SAdrian Hunter mmc_card_set_ddr_mode(card); 12644c4cb171SPhilip Rakity mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50); 12654c4cb171SPhilip Rakity mmc_set_bus_width(card->host, bus_width); 126689a73cf5SPierre Ossman } 1267ef0b27d4SAdrian Hunter } 126889a73cf5SPierre Ossman 1269881d1c25SSeungwon Jeon /* 127052d0974eSSubhash Jadavani * Enable HPI feature (if supported) 127152d0974eSSubhash Jadavani */ 127252d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 127352d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 127452d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 127552d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 127652d0974eSSubhash Jadavani if (err && err != -EBADMSG) 127752d0974eSSubhash Jadavani goto free_card; 127852d0974eSSubhash Jadavani if (err) { 127952d0974eSSubhash Jadavani pr_warning("%s: Enabling HPI failed\n", 128052d0974eSSubhash Jadavani mmc_hostname(card->host)); 128152d0974eSSubhash Jadavani err = 0; 128252d0974eSSubhash Jadavani } else 128352d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 128452d0974eSSubhash Jadavani } 128552d0974eSSubhash Jadavani 128652d0974eSSubhash Jadavani /* 1287881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1288881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1289881d1c25SSeungwon Jeon */ 1290881d1c25SSeungwon Jeon if ((host->caps2 & MMC_CAP2_CACHE_CTRL) && 1291881d1c25SSeungwon Jeon card->ext_csd.cache_size > 0) { 1292881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 12938bc0678bSSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 12948bc0678bSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1295881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1296881d1c25SSeungwon Jeon goto free_card; 1297881d1c25SSeungwon Jeon 1298881d1c25SSeungwon Jeon /* 1299881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1300881d1c25SSeungwon Jeon */ 13018bc0678bSSeungwon Jeon if (err) { 13028bc0678bSSeungwon Jeon pr_warning("%s: Cache is supported, " 13038bc0678bSSeungwon Jeon "but failed to turn on (%d)\n", 13048bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 13058bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 13068bc0678bSSeungwon Jeon err = 0; 13078bc0678bSSeungwon Jeon } else { 13088bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 13098bc0678bSSeungwon Jeon } 1310881d1c25SSeungwon Jeon } 1311881d1c25SSeungwon Jeon 1312abd9ac14SSeungwon Jeon /* 1313abd9ac14SSeungwon Jeon * The mandatory minimum values are defined for packed command. 1314abd9ac14SSeungwon Jeon * read: 5, write: 3 1315abd9ac14SSeungwon Jeon */ 1316abd9ac14SSeungwon Jeon if (card->ext_csd.max_packed_writes >= 3 && 1317abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads >= 5 && 1318abd9ac14SSeungwon Jeon host->caps2 & MMC_CAP2_PACKED_CMD) { 1319abd9ac14SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1320abd9ac14SSeungwon Jeon EXT_CSD_EXP_EVENTS_CTRL, 1321abd9ac14SSeungwon Jeon EXT_CSD_PACKED_EVENT_EN, 1322abd9ac14SSeungwon Jeon card->ext_csd.generic_cmd6_time); 1323abd9ac14SSeungwon Jeon if (err && err != -EBADMSG) 1324abd9ac14SSeungwon Jeon goto free_card; 1325abd9ac14SSeungwon Jeon if (err) { 1326abd9ac14SSeungwon Jeon pr_warn("%s: Enabling packed event failed\n", 1327abd9ac14SSeungwon Jeon mmc_hostname(card->host)); 1328abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 0; 1329abd9ac14SSeungwon Jeon err = 0; 1330abd9ac14SSeungwon Jeon } else { 1331abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 1; 1332abd9ac14SSeungwon Jeon } 1333abd9ac14SSeungwon Jeon } 1334abd9ac14SSeungwon Jeon 13356abaa0c9SPierre Ossman if (!oldcard) 13367ea239d9SPierre Ossman host->card = card; 13377ea239d9SPierre Ossman 133808ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 133917b0429dSPierre Ossman return 0; 13406abaa0c9SPierre Ossman 13416abaa0c9SPierre Ossman free_card: 13426abaa0c9SPierre Ossman if (!oldcard) 13436abaa0c9SPierre Ossman mmc_remove_card(card); 13446abaa0c9SPierre Ossman err: 134508ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 13466abaa0c9SPierre Ossman 1347adf66a0dSPierre Ossman return err; 13486abaa0c9SPierre Ossman } 13496abaa0c9SPierre Ossman 135007a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 135107a68216SUlf Hansson { 135207a68216SUlf Hansson return (card && card->ext_csd.rev >= 3); 135307a68216SUlf Hansson } 135407a68216SUlf Hansson 135507a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 135607a68216SUlf Hansson { 135707a68216SUlf Hansson struct mmc_command cmd = {0}; 135807a68216SUlf Hansson struct mmc_card *card = host->card; 135907a68216SUlf Hansson int err; 136007a68216SUlf Hansson 136107a68216SUlf Hansson if (host->caps2 & MMC_CAP2_NO_SLEEP_CMD) 136207a68216SUlf Hansson return 0; 136307a68216SUlf Hansson 136407a68216SUlf Hansson err = mmc_deselect_cards(host); 136507a68216SUlf Hansson if (err) 136607a68216SUlf Hansson return err; 136707a68216SUlf Hansson 136807a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 136907a68216SUlf Hansson cmd.arg = card->rca << 16; 137007a68216SUlf Hansson cmd.arg |= 1 << 15; 137107a68216SUlf Hansson 137207a68216SUlf Hansson cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 137307a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 137407a68216SUlf Hansson if (err) 137507a68216SUlf Hansson return err; 137607a68216SUlf Hansson 137707a68216SUlf Hansson /* 137807a68216SUlf Hansson * If the host does not wait while the card signals busy, then we will 137907a68216SUlf Hansson * will have to wait the sleep/awake timeout. Note, we cannot use the 138007a68216SUlf Hansson * SEND_STATUS command to poll the status because that command (and most 138107a68216SUlf Hansson * others) is invalid while the card sleeps. 138207a68216SUlf Hansson */ 138307a68216SUlf Hansson if (!(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) 138407a68216SUlf Hansson mmc_delay(DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000)); 138507a68216SUlf Hansson 138607a68216SUlf Hansson return err; 138707a68216SUlf Hansson } 138807a68216SUlf Hansson 1389e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1390e6c08586SUlf Hansson { 1391e6c08586SUlf Hansson return card && 1392e6c08586SUlf Hansson mmc_card_mmc(card) && 1393e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1394e6c08586SUlf Hansson } 1395e6c08586SUlf Hansson 1396e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1397e6c08586SUlf Hansson { 1398e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1399e6c08586SUlf Hansson int err; 1400e6c08586SUlf Hansson 1401e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1402e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1403e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1404e6c08586SUlf Hansson 1405e6c08586SUlf Hansson err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1406e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 1407e6c08586SUlf Hansson notify_type, timeout); 1408e6c08586SUlf Hansson if (err) 1409e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1410e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1411e6c08586SUlf Hansson 1412e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 1413e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 1414e6c08586SUlf Hansson 1415e6c08586SUlf Hansson return err; 1416e6c08586SUlf Hansson } 1417e6c08586SUlf Hansson 14186abaa0c9SPierre Ossman /* 14196abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 14206abaa0c9SPierre Ossman */ 14216abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 14226abaa0c9SPierre Ossman { 14236abaa0c9SPierre Ossman BUG_ON(!host); 14246abaa0c9SPierre Ossman BUG_ON(!host->card); 14256abaa0c9SPierre Ossman 14266abaa0c9SPierre Ossman mmc_remove_card(host->card); 14276abaa0c9SPierre Ossman host->card = NULL; 14286abaa0c9SPierre Ossman } 14296abaa0c9SPierre Ossman 14306abaa0c9SPierre Ossman /* 1431d3049504SAdrian Hunter * Card detection - card is alive. 1432d3049504SAdrian Hunter */ 1433d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1434d3049504SAdrian Hunter { 1435d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1436d3049504SAdrian Hunter } 1437d3049504SAdrian Hunter 1438d3049504SAdrian Hunter /* 14396abaa0c9SPierre Ossman * Card detection callback from host. 14406abaa0c9SPierre Ossman */ 14416abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 14426abaa0c9SPierre Ossman { 14436abaa0c9SPierre Ossman int err; 14446abaa0c9SPierre Ossman 14456abaa0c9SPierre Ossman BUG_ON(!host); 14466abaa0c9SPierre Ossman BUG_ON(!host->card); 14476abaa0c9SPierre Ossman 1448e94cfef6SUlf Hansson mmc_get_card(host->card); 14496abaa0c9SPierre Ossman 14506abaa0c9SPierre Ossman /* 14516abaa0c9SPierre Ossman * Just check if our card has been removed. 14526abaa0c9SPierre Ossman */ 1453d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 14546abaa0c9SPierre Ossman 1455e94cfef6SUlf Hansson mmc_put_card(host->card); 14567ea239d9SPierre Ossman 145717b0429dSPierre Ossman if (err) { 14584101c16aSPierre Ossman mmc_remove(host); 14596abaa0c9SPierre Ossman 14606abaa0c9SPierre Ossman mmc_claim_host(host); 14616abaa0c9SPierre Ossman mmc_detach_bus(host); 14627f7e4129SUlf Hansson mmc_power_off(host); 14636abaa0c9SPierre Ossman mmc_release_host(host); 14646abaa0c9SPierre Ossman } 14656abaa0c9SPierre Ossman } 14666abaa0c9SPierre Ossman 14676abaa0c9SPierre Ossman /* 14686abaa0c9SPierre Ossman * Suspend callback from host. 14696abaa0c9SPierre Ossman */ 147095cdfb72SNicolas Pitre static int mmc_suspend(struct mmc_host *host) 14716abaa0c9SPierre Ossman { 1472c3805467SBalaji T K int err = 0; 1473c3805467SBalaji T K 14746abaa0c9SPierre Ossman BUG_ON(!host); 14756abaa0c9SPierre Ossman BUG_ON(!host->card); 14766abaa0c9SPierre Ossman 14776abaa0c9SPierre Ossman mmc_claim_host(host); 1478881d926dSMaya Erez 147939b9431bSUlf Hansson if (mmc_card_doing_bkops(host->card)) { 148039b9431bSUlf Hansson err = mmc_stop_bkops(host->card); 148139b9431bSUlf Hansson if (err) 148239b9431bSUlf Hansson goto out; 148339b9431bSUlf Hansson } 148439b9431bSUlf Hansson 1485881d926dSMaya Erez err = mmc_cache_ctrl(host, 0); 1486881d926dSMaya Erez if (err) 1487881d926dSMaya Erez goto out; 1488881d926dSMaya Erez 1489e6c08586SUlf Hansson if (mmc_can_poweroff_notify(host->card)) 1490e6c08586SUlf Hansson err = mmc_poweroff_notify(host->card, EXT_CSD_POWER_OFF_SHORT); 149107a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 149207a68216SUlf Hansson err = mmc_sleep(host); 1493e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 149485e727edSJaehoon Chung err = mmc_deselect_cards(host); 14953e73c36bSGirish K S host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); 149695cdfb72SNicolas Pitre 149774590263SUlf Hansson if (!err) 149874590263SUlf Hansson mmc_power_off(host); 1499881d926dSMaya Erez out: 1500881d926dSMaya Erez mmc_release_host(host); 1501c3805467SBalaji T K return err; 15026abaa0c9SPierre Ossman } 15036abaa0c9SPierre Ossman 15046abaa0c9SPierre Ossman /* 15056abaa0c9SPierre Ossman * Resume callback from host. 15066abaa0c9SPierre Ossman * 15076abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 15086abaa0c9SPierre Ossman * and, if so, restore all state to it. 15096abaa0c9SPierre Ossman */ 151095cdfb72SNicolas Pitre static int mmc_resume(struct mmc_host *host) 15116abaa0c9SPierre Ossman { 15126abaa0c9SPierre Ossman int err; 15136abaa0c9SPierre Ossman 15146abaa0c9SPierre Ossman BUG_ON(!host); 15156abaa0c9SPierre Ossman BUG_ON(!host->card); 15166abaa0c9SPierre Ossman 15176abaa0c9SPierre Ossman mmc_claim_host(host); 151874590263SUlf Hansson mmc_power_up(host); 151974590263SUlf Hansson mmc_select_voltage(host, host->ocr); 15208c75deaeSPierre Ossman err = mmc_init_card(host, host->ocr, host->card); 15212986d0bfSPierre Ossman mmc_release_host(host); 15222986d0bfSPierre Ossman 152395cdfb72SNicolas Pitre return err; 15246abaa0c9SPierre Ossman } 15256abaa0c9SPierre Ossman 1526c4d770d7SUlf Hansson 1527c4d770d7SUlf Hansson /* 1528c4d770d7SUlf Hansson * Callback for runtime_suspend. 1529c4d770d7SUlf Hansson */ 1530c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 1531c4d770d7SUlf Hansson { 1532c4d770d7SUlf Hansson int err; 1533c4d770d7SUlf Hansson 1534c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 1535c4d770d7SUlf Hansson return 0; 1536c4d770d7SUlf Hansson 1537c4d770d7SUlf Hansson mmc_claim_host(host); 1538c4d770d7SUlf Hansson 1539c4d770d7SUlf Hansson err = mmc_suspend(host); 1540c4d770d7SUlf Hansson if (err) { 1541c4d770d7SUlf Hansson pr_err("%s: error %d doing aggessive suspend\n", 1542c4d770d7SUlf Hansson mmc_hostname(host), err); 1543c4d770d7SUlf Hansson goto out; 1544c4d770d7SUlf Hansson } 1545c4d770d7SUlf Hansson mmc_power_off(host); 1546c4d770d7SUlf Hansson 1547c4d770d7SUlf Hansson out: 1548c4d770d7SUlf Hansson mmc_release_host(host); 1549c4d770d7SUlf Hansson return err; 1550c4d770d7SUlf Hansson } 1551c4d770d7SUlf Hansson 1552c4d770d7SUlf Hansson /* 1553c4d770d7SUlf Hansson * Callback for runtime_resume. 1554c4d770d7SUlf Hansson */ 1555c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 1556c4d770d7SUlf Hansson { 1557c4d770d7SUlf Hansson int err; 1558c4d770d7SUlf Hansson 1559c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 1560c4d770d7SUlf Hansson return 0; 1561c4d770d7SUlf Hansson 1562c4d770d7SUlf Hansson mmc_claim_host(host); 1563c4d770d7SUlf Hansson 1564c4d770d7SUlf Hansson mmc_power_up(host); 1565c4d770d7SUlf Hansson err = mmc_resume(host); 1566c4d770d7SUlf Hansson if (err) 1567c4d770d7SUlf Hansson pr_err("%s: error %d doing aggessive resume\n", 1568c4d770d7SUlf Hansson mmc_hostname(host), err); 1569c4d770d7SUlf Hansson 1570c4d770d7SUlf Hansson mmc_release_host(host); 1571c4d770d7SUlf Hansson return 0; 1572c4d770d7SUlf Hansson } 1573c4d770d7SUlf Hansson 157412ae637fSOhad Ben-Cohen static int mmc_power_restore(struct mmc_host *host) 1575eae1aeeeSAdrian Hunter { 157612ae637fSOhad Ben-Cohen int ret; 157712ae637fSOhad Ben-Cohen 15783e73c36bSGirish K S host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); 1579eae1aeeeSAdrian Hunter mmc_claim_host(host); 158012ae637fSOhad Ben-Cohen ret = mmc_init_card(host, host->ocr, host->card); 1581eae1aeeeSAdrian Hunter mmc_release_host(host); 158212ae637fSOhad Ben-Cohen 158312ae637fSOhad Ben-Cohen return ret; 1584eae1aeeeSAdrian Hunter } 1585eae1aeeeSAdrian Hunter 15869feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 15879feae246SAdrian Hunter .remove = mmc_remove, 15889feae246SAdrian Hunter .detect = mmc_detect, 15899feae246SAdrian Hunter .suspend = NULL, 15909feae246SAdrian Hunter .resume = NULL, 1591eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1592d3049504SAdrian Hunter .alive = mmc_alive, 15939feae246SAdrian Hunter }; 15949feae246SAdrian Hunter 15959feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops_unsafe = { 15969feae246SAdrian Hunter .remove = mmc_remove, 15979feae246SAdrian Hunter .detect = mmc_detect, 15989feae246SAdrian Hunter .suspend = mmc_suspend, 15999feae246SAdrian Hunter .resume = mmc_resume, 1600c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 1601c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 1602eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1603d3049504SAdrian Hunter .alive = mmc_alive, 16049feae246SAdrian Hunter }; 16059feae246SAdrian Hunter 16069feae246SAdrian Hunter static void mmc_attach_bus_ops(struct mmc_host *host) 16079feae246SAdrian Hunter { 16089feae246SAdrian Hunter const struct mmc_bus_ops *bus_ops; 16099feae246SAdrian Hunter 161071d7d3d1SMatt Fleming if (!mmc_card_is_removable(host)) 16119feae246SAdrian Hunter bus_ops = &mmc_ops_unsafe; 16129feae246SAdrian Hunter else 16139feae246SAdrian Hunter bus_ops = &mmc_ops; 16149feae246SAdrian Hunter mmc_attach_bus(host, bus_ops); 16159feae246SAdrian Hunter } 16169feae246SAdrian Hunter 16176abaa0c9SPierre Ossman /* 16186abaa0c9SPierre Ossman * Starting point for MMC card init. 16196abaa0c9SPierre Ossman */ 1620807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 16216abaa0c9SPierre Ossman { 16226abaa0c9SPierre Ossman int err; 1623807e8e40SAndy Ross u32 ocr; 16246abaa0c9SPierre Ossman 16256abaa0c9SPierre Ossman BUG_ON(!host); 1626d84075c8SPierre Ossman WARN_ON(!host->claimed); 16276abaa0c9SPierre Ossman 162844669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 162944669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 163044669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 163144669034SStefan Nilsson XK 1632807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 1633807e8e40SAndy Ross if (err) 1634807e8e40SAndy Ross return err; 1635807e8e40SAndy Ross 16369feae246SAdrian Hunter mmc_attach_bus_ops(host); 16378f230f45STakashi Iwai if (host->ocr_avail_mmc) 16388f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 16396abaa0c9SPierre Ossman 16406abaa0c9SPierre Ossman /* 1641af517150SDavid Brownell * We need to get OCR a different way for SPI. 1642af517150SDavid Brownell */ 1643af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1644af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 1645af517150SDavid Brownell if (err) 1646af517150SDavid Brownell goto err; 1647af517150SDavid Brownell } 1648af517150SDavid Brownell 1649af517150SDavid Brownell /* 16506abaa0c9SPierre Ossman * Sanity check the voltages that the card claims to 16516abaa0c9SPierre Ossman * support. 16526abaa0c9SPierre Ossman */ 16536abaa0c9SPierre Ossman if (ocr & 0x7F) { 1654a3c76eb9SGirish K S pr_warning("%s: card claims to support voltages " 16556abaa0c9SPierre Ossman "below the defined range. These will be ignored.\n", 16566abaa0c9SPierre Ossman mmc_hostname(host)); 16576abaa0c9SPierre Ossman ocr &= ~0x7F; 16586abaa0c9SPierre Ossman } 16596abaa0c9SPierre Ossman 16606abaa0c9SPierre Ossman host->ocr = mmc_select_voltage(host, ocr); 16616abaa0c9SPierre Ossman 16626abaa0c9SPierre Ossman /* 16636abaa0c9SPierre Ossman * Can we support the voltage of the card? 16646abaa0c9SPierre Ossman */ 1665109b5bedSPierre Ossman if (!host->ocr) { 1666109b5bedSPierre Ossman err = -EINVAL; 16676abaa0c9SPierre Ossman goto err; 1668109b5bedSPierre Ossman } 16696abaa0c9SPierre Ossman 16706abaa0c9SPierre Ossman /* 16716abaa0c9SPierre Ossman * Detect and init the card. 16726abaa0c9SPierre Ossman */ 16738c75deaeSPierre Ossman err = mmc_init_card(host, host->ocr, NULL); 167417b0429dSPierre Ossman if (err) 16756abaa0c9SPierre Ossman goto err; 16766abaa0c9SPierre Ossman 16776abaa0c9SPierre Ossman mmc_release_host(host); 16784101c16aSPierre Ossman err = mmc_add_card(host->card); 1679807e8e40SAndy Ross mmc_claim_host(host); 16807ea239d9SPierre Ossman if (err) 16812986d0bfSPierre Ossman goto remove_card; 16827ea239d9SPierre Ossman 16837ea239d9SPierre Ossman return 0; 16847ea239d9SPierre Ossman 16852986d0bfSPierre Ossman remove_card: 1686807e8e40SAndy Ross mmc_release_host(host); 16876abaa0c9SPierre Ossman mmc_remove_card(host->card); 16882986d0bfSPierre Ossman mmc_claim_host(host); 1689807e8e40SAndy Ross host->card = NULL; 16907ea239d9SPierre Ossman err: 16917ea239d9SPierre Ossman mmc_detach_bus(host); 16927ea239d9SPierre Ossman 1693a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 1694109b5bedSPierre Ossman mmc_hostname(host), err); 1695109b5bedSPierre Ossman 1696adf66a0dSPierre Ossman return err; 16977ea239d9SPierre Ossman } 1698