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; 2425f1a4dd0SLee Jones u32 caps = host->caps, caps2 = host->caps2; 24396cf5f02SSeungwon Jeon unsigned int hs_max_dtr = 0; 24496cf5f02SSeungwon Jeon 24596cf5f02SSeungwon Jeon if (card_type & EXT_CSD_CARD_TYPE_26) 24696cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_26_MAX_DTR; 24796cf5f02SSeungwon Jeon 24896cf5f02SSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 24996cf5f02SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_52) 25096cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_52_MAX_DTR; 25196cf5f02SSeungwon Jeon 25296cf5f02SSeungwon Jeon if ((caps & MMC_CAP_1_8V_DDR && 25396cf5f02SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) || 25496cf5f02SSeungwon Jeon (caps & MMC_CAP_1_2V_DDR && 25596cf5f02SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)) 25696cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 25796cf5f02SSeungwon Jeon 25896cf5f02SSeungwon Jeon if ((caps2 & MMC_CAP2_HS200_1_8V_SDR && 25996cf5f02SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_SDR_1_8V) || 26096cf5f02SSeungwon Jeon (caps2 & MMC_CAP2_HS200_1_2V_SDR && 26196cf5f02SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_SDR_1_2V)) 26296cf5f02SSeungwon Jeon hs_max_dtr = MMC_HS200_MAX_DTR; 26396cf5f02SSeungwon Jeon 26496cf5f02SSeungwon Jeon card->ext_csd.hs_max_dtr = hs_max_dtr; 26596cf5f02SSeungwon Jeon card->ext_csd.card_type = card_type; 26696cf5f02SSeungwon Jeon } 26796cf5f02SSeungwon Jeon 26808ee80ccSPhilip Rakity /* 26908ee80ccSPhilip Rakity * Decode extended CSD. 27008ee80ccSPhilip Rakity */ 27108ee80ccSPhilip Rakity static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) 27208ee80ccSPhilip Rakity { 273e0c368d5SNamjae Jeon int err = 0, idx; 274e0c368d5SNamjae Jeon unsigned int part_size; 275e0c368d5SNamjae Jeon u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; 27608ee80ccSPhilip Rakity 27708ee80ccSPhilip Rakity BUG_ON(!card); 27808ee80ccSPhilip Rakity 27908ee80ccSPhilip Rakity if (!ext_csd) 28008ee80ccSPhilip Rakity return 0; 28108ee80ccSPhilip Rakity 2826da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 283f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 2846da24b78SKyungmin Park if (card->csd.structure == 3) { 285f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 286a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 2878fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 288f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 2896da24b78SKyungmin Park err = -EINVAL; 2906da24b78SKyungmin Park goto out; 2916da24b78SKyungmin Park } 2926da24b78SKyungmin Park } 2936da24b78SKyungmin Park 2946da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 29538ca2850SKyungmin Park if (card->ext_csd.rev > 6) { 296a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD revision %d\n", 2976da24b78SKyungmin Park mmc_hostname(card->host), card->ext_csd.rev); 29800cedfa6SFlorin Malita err = -EINVAL; 29900cedfa6SFlorin Malita goto out; 300d7604d76SPierre Ossman } 301d7604d76SPierre Ossman 302f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 303f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 304f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 305f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 306b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 3077ea239d9SPierre Ossman card->ext_csd.sectors = 3087ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 3097ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 3107ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 3117ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 312fc8a0985SHanumath Prasad 313fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 314fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 3157ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 316d7604d76SPierre Ossman } 31796cf5f02SSeungwon Jeon 318f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 31996cf5f02SSeungwon Jeon mmc_select_card_type(card); 3207ea239d9SPierre Ossman 321f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 322f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 323f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 324f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 325f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 326b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 327b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 328371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 329371a689fSAndrei Warkentin 330371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 331371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 332b1ebe384SJarkko Lavinen 333b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 334b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 335b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 336b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 337dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 338dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 339dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 340dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 341dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 342dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 343f4c5522bSAndrei Warkentin 344f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 345371a689fSAndrei Warkentin 346371a689fSAndrei Warkentin /* 347371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 348371a689fSAndrei Warkentin * multiples of 128K. 349371a689fSAndrei Warkentin */ 350e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 351e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 352e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 353e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 354e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 355add710eaSJohan Rudholm "boot%d", idx, true, 356add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 357e0c368d5SNamjae Jeon } 358e0c368d5SNamjae Jeon } 359b1ebe384SJarkko Lavinen } 360b1ebe384SJarkko Lavinen 361f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 362dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 363f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 364f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 365f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 366f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 367f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 368f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 369f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 370f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 371dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 372709de99dSChuanxiao Dong /* 373709de99dSChuanxiao Dong * Enhanced area feature support -- check whether the eMMC 374709de99dSChuanxiao Dong * card has the Enhanced area enabled. If so, export enhanced 375709de99dSChuanxiao Dong * area offset and size to user by adding sysfs interface. 376709de99dSChuanxiao Dong */ 3775238acbeSAndrei Warkentin card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 378709de99dSChuanxiao Dong if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 379709de99dSChuanxiao Dong (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 380e0c368d5SNamjae Jeon hc_erase_grp_sz = 381709de99dSChuanxiao Dong ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 382e0c368d5SNamjae Jeon hc_wp_grp_sz = 383709de99dSChuanxiao Dong ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 384709de99dSChuanxiao Dong 385709de99dSChuanxiao Dong card->ext_csd.enhanced_area_en = 1; 386709de99dSChuanxiao Dong /* 387709de99dSChuanxiao Dong * calculate the enhanced data area offset, in bytes 388709de99dSChuanxiao Dong */ 389709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = 390709de99dSChuanxiao Dong (ext_csd[139] << 24) + (ext_csd[138] << 16) + 391709de99dSChuanxiao Dong (ext_csd[137] << 8) + ext_csd[136]; 392709de99dSChuanxiao Dong if (mmc_card_blockaddr(card)) 393709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset <<= 9; 394709de99dSChuanxiao Dong /* 395709de99dSChuanxiao Dong * calculate the enhanced data area size, in kilobytes 396709de99dSChuanxiao Dong */ 397709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = 398709de99dSChuanxiao Dong (ext_csd[142] << 16) + (ext_csd[141] << 8) + 399709de99dSChuanxiao Dong ext_csd[140]; 400709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size *= 401709de99dSChuanxiao Dong (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 402709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size <<= 9; 403709de99dSChuanxiao Dong } else { 404709de99dSChuanxiao Dong /* 405709de99dSChuanxiao Dong * If the enhanced area is not enabled, disable these 406709de99dSChuanxiao Dong * device attributes. 407709de99dSChuanxiao Dong */ 408709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 409709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 410709de99dSChuanxiao Dong } 411e0c368d5SNamjae Jeon 412e0c368d5SNamjae Jeon /* 413e0c368d5SNamjae Jeon * General purpose partition feature support -- 414e0c368d5SNamjae Jeon * If ext_csd has the size of general purpose partitions, 415e0c368d5SNamjae Jeon * set size, part_cfg, partition name in mmc_part. 416e0c368d5SNamjae Jeon */ 417e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 418e0c368d5SNamjae Jeon EXT_CSD_PART_SUPPORT_PART_EN) { 419e0c368d5SNamjae Jeon if (card->ext_csd.enhanced_area_en != 1) { 420e0c368d5SNamjae Jeon hc_erase_grp_sz = 421e0c368d5SNamjae Jeon ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 422e0c368d5SNamjae Jeon hc_wp_grp_sz = 423e0c368d5SNamjae Jeon ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 424e0c368d5SNamjae Jeon 425e0c368d5SNamjae Jeon card->ext_csd.enhanced_area_en = 1; 426e0c368d5SNamjae Jeon } 427e0c368d5SNamjae Jeon 428e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 429e0c368d5SNamjae Jeon if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 430e0c368d5SNamjae Jeon !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 431e0c368d5SNamjae Jeon !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 432e0c368d5SNamjae Jeon continue; 433e0c368d5SNamjae Jeon part_size = 434e0c368d5SNamjae Jeon (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 435e0c368d5SNamjae Jeon << 16) + 436e0c368d5SNamjae Jeon (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 437e0c368d5SNamjae Jeon << 8) + 438e0c368d5SNamjae Jeon ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 439e0c368d5SNamjae Jeon part_size *= (size_t)(hc_erase_grp_sz * 440e0c368d5SNamjae Jeon hc_wp_grp_sz); 441e0c368d5SNamjae Jeon mmc_part_add(card, part_size << 19, 442e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 443add710eaSJohan Rudholm "gp%d", idx, false, 444add710eaSJohan Rudholm MMC_BLK_DATA_AREA_GP); 445e0c368d5SNamjae Jeon } 446e0c368d5SNamjae Jeon } 447dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 448dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 449dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 450dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 451dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 452dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 453dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 454dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 455add710eaSJohan Rudholm 456add710eaSJohan Rudholm /* 457add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 458add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 459add710eaSJohan Rudholm * take into account the value of boot_locked below. 460add710eaSJohan Rudholm */ 461add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 462add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 463dfe86cbaSAdrian Hunter } 464dfe86cbaSAdrian Hunter 465b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 466950d56acSJaehoon Chung /* check whether the eMMC card supports BKOPS */ 467950d56acSJaehoon Chung if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { 468950d56acSJaehoon Chung card->ext_csd.bkops = 1; 469950d56acSJaehoon Chung card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN]; 470950d56acSJaehoon Chung card->ext_csd.raw_bkops_status = 471950d56acSJaehoon Chung ext_csd[EXT_CSD_BKOPS_STATUS]; 472950d56acSJaehoon Chung if (!card->ext_csd.bkops_en) 473950d56acSJaehoon Chung pr_info("%s: BKOPS_EN bit is not set\n", 474950d56acSJaehoon Chung mmc_hostname(card->host)); 475950d56acSJaehoon Chung } 476950d56acSJaehoon Chung 477eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 478eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { 479eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 480eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 481eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 482eb0d8f13SJaehoon Chung else 483eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 484eb0d8f13SJaehoon Chung /* 485eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 486eb0d8f13SJaehoon Chung * a command interrupted by HPI 487eb0d8f13SJaehoon Chung */ 488eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 489eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 490eb0d8f13SJaehoon Chung } 491eb0d8f13SJaehoon Chung 492f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 493b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 494090d25feSLoic Pallardy 495090d25feSLoic Pallardy /* 496090d25feSLoic Pallardy * RPMB regions are defined in multiples of 128K. 497090d25feSLoic Pallardy */ 498090d25feSLoic Pallardy card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; 499d0123ccaSBalaji T K if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { 500090d25feSLoic Pallardy mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, 501090d25feSLoic Pallardy EXT_CSD_PART_CONFIG_ACC_RPMB, 502090d25feSLoic Pallardy "rpmb", 0, false, 503090d25feSLoic Pallardy MMC_BLK_DATA_AREA_RPMB); 504090d25feSLoic Pallardy } 505b2499518SAdrian Hunter } 506f4c5522bSAndrei Warkentin 5075238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 508dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 509dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 510dfe86cbaSAdrian Hunter else 511dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 512dfe86cbaSAdrian Hunter 513336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 514bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 515336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 516336c716aSSeungwon Jeon 517b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 518b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 519bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 520bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 521b23cf0bdSSeungwon Jeon 522881d1c25SSeungwon Jeon card->ext_csd.cache_size = 523881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 524881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 525881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 526881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 5274265900eSSaugata Das 5284265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 5294265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 5304265900eSSaugata Das else 5314265900eSSaugata Das card->ext_csd.data_sector_size = 512; 5324265900eSSaugata Das 5334265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 5344265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 5354265900eSSaugata Das card->ext_csd.data_tag_unit_size = 5364265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 5374265900eSSaugata Das (card->ext_csd.data_sector_size); 5384265900eSSaugata Das } else { 5394265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 5404265900eSSaugata Das } 541abd9ac14SSeungwon Jeon 542abd9ac14SSeungwon Jeon card->ext_csd.max_packed_writes = 543abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_WRITES]; 544abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads = 545abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_READS]; 546a5075eb9SSaugata Das } else { 547a5075eb9SSaugata Das card->ext_csd.data_sector_size = 512; 548336c716aSSeungwon Jeon } 549881d1c25SSeungwon Jeon 5507ea239d9SPierre Ossman out: 55108ee80ccSPhilip Rakity return err; 55208ee80ccSPhilip Rakity } 5537ea239d9SPierre Ossman 55408ee80ccSPhilip Rakity static inline void mmc_free_ext_csd(u8 *ext_csd) 55508ee80ccSPhilip Rakity { 55608ee80ccSPhilip Rakity kfree(ext_csd); 55708ee80ccSPhilip Rakity } 55808ee80ccSPhilip Rakity 55908ee80ccSPhilip Rakity 560f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 56108ee80ccSPhilip Rakity { 56208ee80ccSPhilip Rakity u8 *bw_ext_csd; 56308ee80ccSPhilip Rakity int err; 56408ee80ccSPhilip Rakity 565f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 566f39b2dd9SPhilip Rakity return 0; 56708ee80ccSPhilip Rakity 568f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 569f39b2dd9SPhilip Rakity 570f39b2dd9SPhilip Rakity if (err || bw_ext_csd == NULL) { 57108ee80ccSPhilip Rakity err = -EINVAL; 57208ee80ccSPhilip Rakity goto out; 57308ee80ccSPhilip Rakity } 57408ee80ccSPhilip Rakity 57508ee80ccSPhilip Rakity /* only compare read only fields */ 576dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 57708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 578f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 57908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 580f39b2dd9SPhilip Rakity (card->ext_csd.rev == 58108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 582f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 58308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 584f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 58508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 586f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 58708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 588f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 58908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 590f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 59108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 592f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 59308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 594f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 59508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 596f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 59708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 598f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 59908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 600f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 60108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 602f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 603f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 604f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 605f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 606f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 607f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 608f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 609f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 3])); 61008ee80ccSPhilip Rakity if (err) 61108ee80ccSPhilip Rakity err = -EINVAL; 61208ee80ccSPhilip Rakity 61308ee80ccSPhilip Rakity out: 61408ee80ccSPhilip Rakity mmc_free_ext_csd(bw_ext_csd); 6157ea239d9SPierre Ossman return err; 6167ea239d9SPierre Ossman } 6177ea239d9SPierre Ossman 61851ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 61951ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 62051ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 62151ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 62251ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 623dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 624dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 62551ec92e2SPierre Ossman MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); 62651ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 62751ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 62851ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 62951ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 63051ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 631709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 632709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 633709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 634188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 635188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 63651ec92e2SPierre Ossman 63751ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 63851ec92e2SPierre Ossman &dev_attr_cid.attr, 63951ec92e2SPierre Ossman &dev_attr_csd.attr, 64051ec92e2SPierre Ossman &dev_attr_date.attr, 641dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 642dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 64351ec92e2SPierre Ossman &dev_attr_fwrev.attr, 64451ec92e2SPierre Ossman &dev_attr_hwrev.attr, 64551ec92e2SPierre Ossman &dev_attr_manfid.attr, 64651ec92e2SPierre Ossman &dev_attr_name.attr, 64751ec92e2SPierre Ossman &dev_attr_oemid.attr, 64851ec92e2SPierre Ossman &dev_attr_serial.attr, 649709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 650709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 651188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 652188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 65351ec92e2SPierre Ossman NULL, 65451ec92e2SPierre Ossman }; 65551ec92e2SPierre Ossman 65651ec92e2SPierre Ossman static struct attribute_group mmc_std_attr_group = { 65751ec92e2SPierre Ossman .attrs = mmc_std_attrs, 65851ec92e2SPierre Ossman }; 65951ec92e2SPierre Ossman 660a4dbd674SDavid Brownell static const struct attribute_group *mmc_attr_groups[] = { 66151ec92e2SPierre Ossman &mmc_std_attr_group, 66251ec92e2SPierre Ossman NULL, 66351ec92e2SPierre Ossman }; 66451ec92e2SPierre Ossman 66551ec92e2SPierre Ossman static struct device_type mmc_type = { 66651ec92e2SPierre Ossman .groups = mmc_attr_groups, 66751ec92e2SPierre Ossman }; 66851ec92e2SPierre Ossman 6697ea239d9SPierre Ossman /* 670b87d8dbfSGirish K S * Select the PowerClass for the current bus width 671b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 672b87d8dbfSGirish K S * extended CSD register, select it by executing the 673b87d8dbfSGirish K S * mmc_switch command. 674b87d8dbfSGirish K S */ 675b87d8dbfSGirish K S static int mmc_select_powerclass(struct mmc_card *card, 676b87d8dbfSGirish K S unsigned int bus_width, u8 *ext_csd) 677b87d8dbfSGirish K S { 678b87d8dbfSGirish K S int err = 0; 679b87d8dbfSGirish K S unsigned int pwrclass_val; 680b87d8dbfSGirish K S unsigned int index = 0; 681b87d8dbfSGirish K S struct mmc_host *host; 682b87d8dbfSGirish K S 683b87d8dbfSGirish K S BUG_ON(!card); 684b87d8dbfSGirish K S 685b87d8dbfSGirish K S host = card->host; 686b87d8dbfSGirish K S BUG_ON(!host); 687b87d8dbfSGirish K S 688b87d8dbfSGirish K S if (ext_csd == NULL) 689b87d8dbfSGirish K S return 0; 690b87d8dbfSGirish K S 691b87d8dbfSGirish K S /* Power class selection is supported for versions >= 4.0 */ 692b87d8dbfSGirish K S if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 693b87d8dbfSGirish K S return 0; 694b87d8dbfSGirish K S 695b87d8dbfSGirish K S /* Power class values are defined only for 4/8 bit bus */ 696b87d8dbfSGirish K S if (bus_width == EXT_CSD_BUS_WIDTH_1) 697b87d8dbfSGirish K S return 0; 698b87d8dbfSGirish K S 699b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 700b87d8dbfSGirish K S case MMC_VDD_165_195: 701b87d8dbfSGirish K S if (host->ios.clock <= 26000000) 702b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_26_195; 703b87d8dbfSGirish K S else if (host->ios.clock <= 52000000) 704b87d8dbfSGirish K S index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 705b87d8dbfSGirish K S EXT_CSD_PWR_CL_52_195 : 706b87d8dbfSGirish K S EXT_CSD_PWR_CL_DDR_52_195; 707b87d8dbfSGirish K S else if (host->ios.clock <= 200000000) 708b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_200_195; 709b87d8dbfSGirish K S break; 71093fc5a47SSubhash Jadavani case MMC_VDD_27_28: 71193fc5a47SSubhash Jadavani case MMC_VDD_28_29: 71293fc5a47SSubhash Jadavani case MMC_VDD_29_30: 71393fc5a47SSubhash Jadavani case MMC_VDD_30_31: 71493fc5a47SSubhash Jadavani case MMC_VDD_31_32: 715b87d8dbfSGirish K S case MMC_VDD_32_33: 716b87d8dbfSGirish K S case MMC_VDD_33_34: 717b87d8dbfSGirish K S case MMC_VDD_34_35: 718b87d8dbfSGirish K S case MMC_VDD_35_36: 719b87d8dbfSGirish K S if (host->ios.clock <= 26000000) 720b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_26_360; 721b87d8dbfSGirish K S else if (host->ios.clock <= 52000000) 722b87d8dbfSGirish K S index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 723b87d8dbfSGirish K S EXT_CSD_PWR_CL_52_360 : 724b87d8dbfSGirish K S EXT_CSD_PWR_CL_DDR_52_360; 725b87d8dbfSGirish K S else if (host->ios.clock <= 200000000) 726b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_200_360; 727b87d8dbfSGirish K S break; 728b87d8dbfSGirish K S default: 729b87d8dbfSGirish K S pr_warning("%s: Voltage range not supported " 730b87d8dbfSGirish K S "for power class.\n", mmc_hostname(host)); 731b87d8dbfSGirish K S return -EINVAL; 732b87d8dbfSGirish K S } 733b87d8dbfSGirish K S 734b87d8dbfSGirish K S pwrclass_val = ext_csd[index]; 735b87d8dbfSGirish K S 736b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 737b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 738b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 739b87d8dbfSGirish K S else 740b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 741b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 742b87d8dbfSGirish K S 743b87d8dbfSGirish K S /* If the power class is different from the default value */ 744b87d8dbfSGirish K S if (pwrclass_val > 0) { 745b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 746b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 747b87d8dbfSGirish K S pwrclass_val, 74871fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 749b87d8dbfSGirish K S } 750b87d8dbfSGirish K S 751b87d8dbfSGirish K S return err; 752b87d8dbfSGirish K S } 753b87d8dbfSGirish K S 754b87d8dbfSGirish K S /* 755a4924c71SGirish K S * Selects the desired buswidth and switch to the HS200 mode 756a4924c71SGirish K S * if bus width set without error 757a4924c71SGirish K S */ 758a4924c71SGirish K S static int mmc_select_hs200(struct mmc_card *card) 759a4924c71SGirish K S { 76010942aa4SSeungwon Jeon int idx, err = -EINVAL; 761a4924c71SGirish K S struct mmc_host *host; 762a4924c71SGirish K S static unsigned ext_csd_bits[] = { 763a4924c71SGirish K S EXT_CSD_BUS_WIDTH_4, 764a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 765a4924c71SGirish K S }; 766a4924c71SGirish K S static unsigned bus_widths[] = { 767a4924c71SGirish K S MMC_BUS_WIDTH_4, 768a4924c71SGirish K S MMC_BUS_WIDTH_8, 769a4924c71SGirish K S }; 770a4924c71SGirish K S 771a4924c71SGirish K S BUG_ON(!card); 772a4924c71SGirish K S 773a4924c71SGirish K S host = card->host; 774a4924c71SGirish K S 775a4924c71SGirish K S if (card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_2V && 776a4924c71SGirish K S host->caps2 & MMC_CAP2_HS200_1_2V_SDR) 777567c8903SJohan Rudholm err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 77810942aa4SSeungwon Jeon 77910942aa4SSeungwon Jeon if (err && card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_8V && 78010942aa4SSeungwon Jeon host->caps2 & MMC_CAP2_HS200_1_8V_SDR) 781567c8903SJohan Rudholm err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 782a4924c71SGirish K S 783a4924c71SGirish K S /* If fails try again during next card power cycle */ 784a4924c71SGirish K S if (err) 785a4924c71SGirish K S goto err; 786a4924c71SGirish K S 787a4924c71SGirish K S idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 1 : 0; 788a4924c71SGirish K S 789a4924c71SGirish K S /* 790a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 791a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 792a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 793a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 794a4924c71SGirish K S */ 795a4924c71SGirish K S for (; idx >= 0; idx--) { 796a4924c71SGirish K S 797a4924c71SGirish K S /* 798a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 799a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 800a4924c71SGirish K S * mmc switch command returns error then switch to 801a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 802a4924c71SGirish K S * bus width on the host. 803a4924c71SGirish K S */ 804a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 805a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 806a4924c71SGirish K S ext_csd_bits[idx], 807a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 808a4924c71SGirish K S if (err) 809a4924c71SGirish K S continue; 810a4924c71SGirish K S 811a4924c71SGirish K S mmc_set_bus_width(card->host, bus_widths[idx]); 812a4924c71SGirish K S 813a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 814a4924c71SGirish K S err = mmc_compare_ext_csds(card, bus_widths[idx]); 815a4924c71SGirish K S else 816a4924c71SGirish K S err = mmc_bus_test(card, bus_widths[idx]); 817a4924c71SGirish K S if (!err) 818a4924c71SGirish K S break; 819a4924c71SGirish K S } 820a4924c71SGirish K S 821a4924c71SGirish K S /* switch to HS200 mode if bus width set successfully */ 822a4924c71SGirish K S if (!err) 823a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 824a4924c71SGirish K S EXT_CSD_HS_TIMING, 2, 0); 825a4924c71SGirish K S err: 826a4924c71SGirish K S return err; 827a4924c71SGirish K S } 828a4924c71SGirish K S 829a4924c71SGirish K S /* 8306abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 8316abaa0c9SPierre Ossman * 8328769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 8336abaa0c9SPierre Ossman * we're trying to reinitialise. 8347ea239d9SPierre Ossman */ 8358c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 8366abaa0c9SPierre Ossman struct mmc_card *oldcard) 8377ea239d9SPierre Ossman { 8387ea239d9SPierre Ossman struct mmc_card *card; 83925d5c699SPhilip Rakity int err, ddr = 0; 8407ea239d9SPierre Ossman u32 cid[4]; 8417ea239d9SPierre Ossman unsigned int max_dtr; 842b676f039SPhilip Rakity u32 rocr; 84308ee80ccSPhilip Rakity u8 *ext_csd = NULL; 8447ea239d9SPierre Ossman 8457ea239d9SPierre Ossman BUG_ON(!host); 846d84075c8SPierre Ossman WARN_ON(!host->claimed); 8477ea239d9SPierre Ossman 84844669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 84944669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 85044669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 85144669034SStefan Nilsson XK 8527ea239d9SPierre Ossman /* 8537ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 8547ea239d9SPierre Ossman * need to tell some cards to go back to the idle 8557ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 8567ea239d9SPierre Ossman * respond. 857c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 8587ea239d9SPierre Ossman */ 8597ea239d9SPierre Ossman mmc_go_idle(host); 8607ea239d9SPierre Ossman 8617ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 862b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 86317b0429dSPierre Ossman if (err) 8646abaa0c9SPierre Ossman goto err; 8657ea239d9SPierre Ossman 8667ea239d9SPierre Ossman /* 867af517150SDavid Brownell * For SPI, enable CRC as appropriate. 868af517150SDavid Brownell */ 869af517150SDavid Brownell if (mmc_host_is_spi(host)) { 870af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 871af517150SDavid Brownell if (err) 872af517150SDavid Brownell goto err; 873af517150SDavid Brownell } 874af517150SDavid Brownell 875af517150SDavid Brownell /* 8767ea239d9SPierre Ossman * Fetch CID from card. 8777ea239d9SPierre Ossman */ 878af517150SDavid Brownell if (mmc_host_is_spi(host)) 879af517150SDavid Brownell err = mmc_send_cid(host, cid); 880af517150SDavid Brownell else 8817ea239d9SPierre Ossman err = mmc_all_send_cid(host, cid); 88217b0429dSPierre Ossman if (err) 8837ea239d9SPierre Ossman goto err; 8847ea239d9SPierre Ossman 8856abaa0c9SPierre Ossman if (oldcard) { 886adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 887adf66a0dSPierre Ossman err = -ENOENT; 8886abaa0c9SPierre Ossman goto err; 889adf66a0dSPierre Ossman } 8906abaa0c9SPierre Ossman 8916abaa0c9SPierre Ossman card = oldcard; 8926abaa0c9SPierre Ossman } else { 8937ea239d9SPierre Ossman /* 8947ea239d9SPierre Ossman * Allocate card structure. 8957ea239d9SPierre Ossman */ 89651ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 897adf66a0dSPierre Ossman if (IS_ERR(card)) { 898adf66a0dSPierre Ossman err = PTR_ERR(card); 8997ea239d9SPierre Ossman goto err; 900adf66a0dSPierre Ossman } 9017ea239d9SPierre Ossman 9027ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 9037ea239d9SPierre Ossman card->rca = 1; 9047ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 9056abaa0c9SPierre Ossman } 9067ea239d9SPierre Ossman 9077ea239d9SPierre Ossman /* 908af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 9097ea239d9SPierre Ossman */ 910af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 9117ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 91217b0429dSPierre Ossman if (err) 9137ea239d9SPierre Ossman goto free_card; 9147ea239d9SPierre Ossman 9157ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 916af517150SDavid Brownell } 9177ea239d9SPierre Ossman 9186abaa0c9SPierre Ossman if (!oldcard) { 9197ea239d9SPierre Ossman /* 9207ea239d9SPierre Ossman * Fetch CSD from card. 9217ea239d9SPierre Ossman */ 9227ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 92317b0429dSPierre Ossman if (err) 9247ea239d9SPierre Ossman goto free_card; 9257ea239d9SPierre Ossman 926bd766312SPierre Ossman err = mmc_decode_csd(card); 927adf66a0dSPierre Ossman if (err) 928bd766312SPierre Ossman goto free_card; 929bd766312SPierre Ossman err = mmc_decode_cid(card); 930adf66a0dSPierre Ossman if (err) 931bd766312SPierre Ossman goto free_card; 9326abaa0c9SPierre Ossman } 9337ea239d9SPierre Ossman 9347ea239d9SPierre Ossman /* 93589a73cf5SPierre Ossman * Select card, as all following commands rely on that. 9367ea239d9SPierre Ossman */ 937af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 9387ea239d9SPierre Ossman err = mmc_select_card(card); 93917b0429dSPierre Ossman if (err) 9407ea239d9SPierre Ossman goto free_card; 941af517150SDavid Brownell } 9427ea239d9SPierre Ossman 9436abaa0c9SPierre Ossman if (!oldcard) { 94489a73cf5SPierre Ossman /* 945af517150SDavid Brownell * Fetch and process extended CSD. 94689a73cf5SPierre Ossman */ 94708ee80ccSPhilip Rakity 94808ee80ccSPhilip Rakity err = mmc_get_ext_csd(card, &ext_csd); 94908ee80ccSPhilip Rakity if (err) 95008ee80ccSPhilip Rakity goto free_card; 95108ee80ccSPhilip Rakity err = mmc_read_ext_csd(card, ext_csd); 95217b0429dSPierre Ossman if (err) 9537ea239d9SPierre Ossman goto free_card; 954b676f039SPhilip Rakity 955b676f039SPhilip Rakity /* If doing byte addressing, check if required to do sector 956b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 957b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 958b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 959b676f039SPhilip Rakity */ 960b676f039SPhilip Rakity if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) 961b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 962b676f039SPhilip Rakity 963dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 964dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 9656abaa0c9SPierre Ossman } 9667ea239d9SPierre Ossman 9677ea239d9SPierre Ossman /* 968709de99dSChuanxiao Dong * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF 969709de99dSChuanxiao Dong * bit. This bit will be lost every time after a reset or power off. 970709de99dSChuanxiao Dong */ 97183bb24aaSAdrian Hunter if (card->ext_csd.enhanced_area_en || 97283bb24aaSAdrian Hunter (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { 973709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 974b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 975b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 976709de99dSChuanxiao Dong 977709de99dSChuanxiao Dong if (err && err != -EBADMSG) 978709de99dSChuanxiao Dong goto free_card; 979709de99dSChuanxiao Dong 980709de99dSChuanxiao Dong if (err) { 981709de99dSChuanxiao Dong err = 0; 982709de99dSChuanxiao Dong /* 983709de99dSChuanxiao Dong * Just disable enhanced area off & sz 984709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 985709de99dSChuanxiao Dong * during next time reinit 986709de99dSChuanxiao Dong */ 987709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 988709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 989709de99dSChuanxiao Dong } else { 990709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 991709de99dSChuanxiao Dong /* 992709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 993709de99dSChuanxiao Dong * This will affect the erase size, so 994709de99dSChuanxiao Dong * here need to reset erase size 995709de99dSChuanxiao Dong */ 996709de99dSChuanxiao Dong mmc_set_erase_size(card); 997709de99dSChuanxiao Dong } 998709de99dSChuanxiao Dong } 999709de99dSChuanxiao Dong 1000709de99dSChuanxiao Dong /* 100141e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 100241e2a489SPhilip Rakity */ 1003371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1004371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1005371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1006371a689fSAndrei Warkentin card->ext_csd.part_config, 1007371a689fSAndrei Warkentin card->ext_csd.part_time); 1008371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1009371a689fSAndrei Warkentin goto free_card; 101041e2a489SPhilip Rakity } 101141e2a489SPhilip Rakity 101241e2a489SPhilip Rakity /* 1013bec8726aSGirish K S * If the host supports the power_off_notify capability then 1014bec8726aSGirish K S * set the notification byte in the ext_csd register of device 1015bec8726aSGirish K S */ 1016bec8726aSGirish K S if ((host->caps2 & MMC_CAP2_POWEROFF_NOTIFY) && 1017a80f1627SGirish K S (card->ext_csd.rev >= 6)) { 1018bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1019bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1020bec8726aSGirish K S EXT_CSD_POWER_ON, 1021bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1022bec8726aSGirish K S if (err && err != -EBADMSG) 1023bec8726aSGirish K S goto free_card; 1024bec8726aSGirish K S 102596a85d54SGirish K S /* 102696a85d54SGirish K S * The err can be -EBADMSG or 0, 102796a85d54SGirish K S * so check for success and update the flag 102896a85d54SGirish K S */ 1029bec8726aSGirish K S if (!err) 1030e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 103196a85d54SGirish K S } 1032bec8726aSGirish K S 1033bec8726aSGirish K S /* 103489a73cf5SPierre Ossman * Activate high speed (if supported) 103589a73cf5SPierre Ossman */ 1036a4924c71SGirish K S if (card->ext_csd.hs_max_dtr != 0) { 1037a4924c71SGirish K S err = 0; 1038a4924c71SGirish K S if (card->ext_csd.hs_max_dtr > 52000000 && 1039a4924c71SGirish K S host->caps2 & MMC_CAP2_HS200) 1040a4924c71SGirish K S err = mmc_select_hs200(card); 1041a4924c71SGirish K S else if (host->caps & MMC_CAP_MMC_HIGHSPEED) 104289a73cf5SPierre Ossman err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10437488e924SGirish K S EXT_CSD_HS_TIMING, 1, 10447488e924SGirish K S card->ext_csd.generic_cmd6_time); 1045a4924c71SGirish K S 1046ef0b27d4SAdrian Hunter if (err && err != -EBADMSG) 104789a73cf5SPierre Ossman goto free_card; 104889a73cf5SPierre Ossman 1049ef0b27d4SAdrian Hunter if (err) { 1050a3c76eb9SGirish K S pr_warning("%s: switch to highspeed failed\n", 1051ef0b27d4SAdrian Hunter mmc_hostname(card->host)); 1052ef0b27d4SAdrian Hunter err = 0; 1053ef0b27d4SAdrian Hunter } else { 1054a4924c71SGirish K S if (card->ext_csd.hs_max_dtr > 52000000 && 1055a4924c71SGirish K S host->caps2 & MMC_CAP2_HS200) { 1056a4924c71SGirish K S mmc_card_set_hs200(card); 1057a4924c71SGirish K S mmc_set_timing(card->host, 1058a4924c71SGirish K S MMC_TIMING_MMC_HS200); 1059a4924c71SGirish K S } else { 106089a73cf5SPierre Ossman mmc_card_set_highspeed(card); 106189a73cf5SPierre Ossman mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 106289a73cf5SPierre Ossman } 1063ef0b27d4SAdrian Hunter } 1064a4924c71SGirish K S } 106589a73cf5SPierre Ossman 106689a73cf5SPierre Ossman /* 10677ea239d9SPierre Ossman * Compute bus speed. 10687ea239d9SPierre Ossman */ 10697ea239d9SPierre Ossman max_dtr = (unsigned int)-1; 10707ea239d9SPierre Ossman 1071a4924c71SGirish K S if (mmc_card_highspeed(card) || mmc_card_hs200(card)) { 10727ea239d9SPierre Ossman if (max_dtr > card->ext_csd.hs_max_dtr) 10737ea239d9SPierre Ossman max_dtr = card->ext_csd.hs_max_dtr; 1074ccb52a00SAl Cooper if (mmc_card_highspeed(card) && (max_dtr > 52000000)) 1075ccb52a00SAl Cooper max_dtr = 52000000; 10767ea239d9SPierre Ossman } else if (max_dtr > card->csd.max_dtr) { 10777ea239d9SPierre Ossman max_dtr = card->csd.max_dtr; 10787ea239d9SPierre Ossman } 10797ea239d9SPierre Ossman 10807ea239d9SPierre Ossman mmc_set_clock(host, max_dtr); 10817ea239d9SPierre Ossman 108289a73cf5SPierre Ossman /* 10830f8d8ea6SAdrian Hunter * Indicate DDR mode (if supported). 1084dfc13e84SHanumath Prasad */ 1085dfc13e84SHanumath Prasad if (mmc_card_highspeed(card)) { 1086dfc13e84SHanumath Prasad if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) 10874c4cb171SPhilip Rakity && ((host->caps & (MMC_CAP_1_8V_DDR | 10884c4cb171SPhilip Rakity MMC_CAP_UHS_DDR50)) 10894c4cb171SPhilip Rakity == (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50))) 109049e3b5a4SAdrian Hunter ddr = MMC_1_8V_DDR_MODE; 1091dfc13e84SHanumath Prasad else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) 10924c4cb171SPhilip Rakity && ((host->caps & (MMC_CAP_1_2V_DDR | 10934c4cb171SPhilip Rakity MMC_CAP_UHS_DDR50)) 10944c4cb171SPhilip Rakity == (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50))) 109549e3b5a4SAdrian Hunter ddr = MMC_1_2V_DDR_MODE; 1096dfc13e84SHanumath Prasad } 1097dfc13e84SHanumath Prasad 1098dfc13e84SHanumath Prasad /* 1099a4924c71SGirish K S * Indicate HS200 SDR mode (if supported). 1100a4924c71SGirish K S */ 1101a4924c71SGirish K S if (mmc_card_hs200(card)) { 1102a4924c71SGirish K S u32 ext_csd_bits; 1103a4924c71SGirish K S u32 bus_width = card->host->ios.bus_width; 1104a4924c71SGirish K S 1105a4924c71SGirish K S /* 1106a4924c71SGirish K S * For devices supporting HS200 mode, the bus width has 1107a4924c71SGirish K S * to be set before executing the tuning function. If 1108a4924c71SGirish K S * set before tuning, then device will respond with CRC 1109a4924c71SGirish K S * errors for responses on CMD line. So for HS200 the 1110a4924c71SGirish K S * sequence will be 1111a4924c71SGirish K S * 1. set bus width 4bit / 8 bit (1 bit not supported) 1112a4924c71SGirish K S * 2. switch to HS200 mode 1113a4924c71SGirish K S * 3. set the clock to > 52Mhz <=200MHz and 1114a4924c71SGirish K S * 4. execute tuning for HS200 1115a4924c71SGirish K S */ 1116a4924c71SGirish K S if ((host->caps2 & MMC_CAP2_HS200) && 111752d0974eSSubhash Jadavani card->host->ops->execute_tuning) { 111852d0974eSSubhash Jadavani mmc_host_clk_hold(card->host); 1119a4924c71SGirish K S err = card->host->ops->execute_tuning(card->host, 1120a4924c71SGirish K S MMC_SEND_TUNING_BLOCK_HS200); 112152d0974eSSubhash Jadavani mmc_host_clk_release(card->host); 112252d0974eSSubhash Jadavani } 1123a4924c71SGirish K S if (err) { 1124a4924c71SGirish K S pr_warning("%s: tuning execution failed\n", 1125a4924c71SGirish K S mmc_hostname(card->host)); 1126a4924c71SGirish K S goto err; 1127a4924c71SGirish K S } 1128a4924c71SGirish K S 1129a4924c71SGirish K S ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 1130a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 1131a4924c71SGirish K S err = mmc_select_powerclass(card, ext_csd_bits, ext_csd); 113293fc5a47SSubhash Jadavani if (err) 113387f761b6SVenkatraman S pr_warning("%s: power class selection to bus width %d" 113487f761b6SVenkatraman S " failed\n", mmc_hostname(card->host), 113587f761b6SVenkatraman S 1 << bus_width); 1136a4924c71SGirish K S } 1137a4924c71SGirish K S 1138a4924c71SGirish K S /* 11390f8d8ea6SAdrian Hunter * Activate wide bus and DDR (if supported). 114089a73cf5SPierre Ossman */ 1141a4924c71SGirish K S if (!mmc_card_hs200(card) && 11427488e924SGirish K S (card->csd.mmca_vsn >= CSD_SPEC_VER_4) && 1143b30f8af3SJarkko Lavinen (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { 114422113efdSAries Lee static unsigned ext_csd_bits[][2] = { 114522113efdSAries Lee { EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 }, 114622113efdSAries Lee { EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 }, 114722113efdSAries Lee { EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 }, 114822113efdSAries Lee }; 114922113efdSAries Lee static unsigned bus_widths[] = { 115022113efdSAries Lee MMC_BUS_WIDTH_8, 115122113efdSAries Lee MMC_BUS_WIDTH_4, 115222113efdSAries Lee MMC_BUS_WIDTH_1 115322113efdSAries Lee }; 115422113efdSAries Lee unsigned idx, bus_width = 0; 1155b30f8af3SJarkko Lavinen 115622113efdSAries Lee if (host->caps & MMC_CAP_8_BIT_DATA) 115722113efdSAries Lee idx = 0; 1158dfc13e84SHanumath Prasad else 115922113efdSAries Lee idx = 1; 116022113efdSAries Lee for (; idx < ARRAY_SIZE(bus_widths); idx++) { 116122113efdSAries Lee bus_width = bus_widths[idx]; 116222113efdSAries Lee if (bus_width == MMC_BUS_WIDTH_1) 116322113efdSAries Lee ddr = 0; /* no DDR for 1-bit width */ 1164b87d8dbfSGirish K S err = mmc_select_powerclass(card, ext_csd_bits[idx][0], 1165b87d8dbfSGirish K S ext_csd); 1166b87d8dbfSGirish K S if (err) 116787f761b6SVenkatraman S pr_warning("%s: power class selection to " 116887f761b6SVenkatraman S "bus width %d failed\n", 116987f761b6SVenkatraman S mmc_hostname(card->host), 117087f761b6SVenkatraman S 1 << bus_width); 1171b87d8dbfSGirish K S 117222113efdSAries Lee err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 117322113efdSAries Lee EXT_CSD_BUS_WIDTH, 1174d3a8d95dSAndrei Warkentin ext_csd_bits[idx][0], 1175b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 117622113efdSAries Lee if (!err) { 11774c4cb171SPhilip Rakity mmc_set_bus_width(card->host, bus_width); 117808ee80ccSPhilip Rakity 117922113efdSAries Lee /* 118022113efdSAries Lee * If controller can't handle bus width test, 118108ee80ccSPhilip Rakity * compare ext_csd previously read in 1 bit mode 118208ee80ccSPhilip Rakity * against ext_csd at new bus width 118322113efdSAries Lee */ 118422113efdSAries Lee if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 118508ee80ccSPhilip Rakity err = mmc_compare_ext_csds(card, 118608ee80ccSPhilip Rakity bus_width); 118708ee80ccSPhilip Rakity else 118822113efdSAries Lee err = mmc_bus_test(card, bus_width); 118922113efdSAries Lee if (!err) 119022113efdSAries Lee break; 119122113efdSAries Lee } 1192b30f8af3SJarkko Lavinen } 1193b30f8af3SJarkko Lavinen 119422113efdSAries Lee if (!err && ddr) { 1195b87d8dbfSGirish K S err = mmc_select_powerclass(card, ext_csd_bits[idx][1], 1196b87d8dbfSGirish K S ext_csd); 1197b87d8dbfSGirish K S if (err) 119887f761b6SVenkatraman S pr_warning("%s: power class selection to " 119987f761b6SVenkatraman S "bus width %d ddr %d failed\n", 120087f761b6SVenkatraman S mmc_hostname(card->host), 120187f761b6SVenkatraman S 1 << bus_width, ddr); 1202b87d8dbfSGirish K S 120389a73cf5SPierre Ossman err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 120422113efdSAries Lee EXT_CSD_BUS_WIDTH, 1205d3a8d95dSAndrei Warkentin ext_csd_bits[idx][1], 1206b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 120722113efdSAries Lee } 1208ef0b27d4SAdrian Hunter if (err) { 1209a3c76eb9SGirish K S pr_warning("%s: switch to bus width %d ddr %d " 1210ef0b27d4SAdrian Hunter "failed\n", mmc_hostname(card->host), 12110f8d8ea6SAdrian Hunter 1 << bus_width, ddr); 121222113efdSAries Lee goto free_card; 121322113efdSAries Lee } else if (ddr) { 12144c4cb171SPhilip Rakity /* 12154c4cb171SPhilip Rakity * eMMC cards can support 3.3V to 1.2V i/o (vccq) 12164c4cb171SPhilip Rakity * signaling. 12174c4cb171SPhilip Rakity * 12184c4cb171SPhilip Rakity * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 12194c4cb171SPhilip Rakity * 12204c4cb171SPhilip Rakity * 1.8V vccq at 3.3V core voltage (vcc) is not required 12214c4cb171SPhilip Rakity * in the JEDEC spec for DDR. 12224c4cb171SPhilip Rakity * 12234c4cb171SPhilip Rakity * Do not force change in vccq since we are obviously 12244c4cb171SPhilip Rakity * working and no change to vccq is needed. 12254c4cb171SPhilip Rakity * 12264c4cb171SPhilip Rakity * WARNING: eMMC rules are NOT the same as SD DDR 12274c4cb171SPhilip Rakity */ 1228913047e9SGirish K S if (ddr == MMC_1_2V_DDR_MODE) { 1229567c8903SJohan Rudholm err = __mmc_set_signal_voltage(host, 1230567c8903SJohan Rudholm MMC_SIGNAL_VOLTAGE_120); 12314c4cb171SPhilip Rakity if (err) 12324c4cb171SPhilip Rakity goto err; 12334c4cb171SPhilip Rakity } 12340f8d8ea6SAdrian Hunter mmc_card_set_ddr_mode(card); 12354c4cb171SPhilip Rakity mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50); 12364c4cb171SPhilip Rakity mmc_set_bus_width(card->host, bus_width); 123789a73cf5SPierre Ossman } 1238ef0b27d4SAdrian Hunter } 123989a73cf5SPierre Ossman 1240881d1c25SSeungwon Jeon /* 124152d0974eSSubhash Jadavani * Enable HPI feature (if supported) 124252d0974eSSubhash Jadavani */ 124352d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 124452d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 124552d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 124652d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 124752d0974eSSubhash Jadavani if (err && err != -EBADMSG) 124852d0974eSSubhash Jadavani goto free_card; 124952d0974eSSubhash Jadavani if (err) { 125052d0974eSSubhash Jadavani pr_warning("%s: Enabling HPI failed\n", 125152d0974eSSubhash Jadavani mmc_hostname(card->host)); 125252d0974eSSubhash Jadavani err = 0; 125352d0974eSSubhash Jadavani } else 125452d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 125552d0974eSSubhash Jadavani } 125652d0974eSSubhash Jadavani 125752d0974eSSubhash Jadavani /* 1258881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1259881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1260881d1c25SSeungwon Jeon */ 1261881d1c25SSeungwon Jeon if ((host->caps2 & MMC_CAP2_CACHE_CTRL) && 1262881d1c25SSeungwon Jeon card->ext_csd.cache_size > 0) { 1263881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 12648bc0678bSSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 12658bc0678bSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1266881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1267881d1c25SSeungwon Jeon goto free_card; 1268881d1c25SSeungwon Jeon 1269881d1c25SSeungwon Jeon /* 1270881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1271881d1c25SSeungwon Jeon */ 12728bc0678bSSeungwon Jeon if (err) { 12738bc0678bSSeungwon Jeon pr_warning("%s: Cache is supported, " 12748bc0678bSSeungwon Jeon "but failed to turn on (%d)\n", 12758bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 12768bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 12778bc0678bSSeungwon Jeon err = 0; 12788bc0678bSSeungwon Jeon } else { 12798bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 12808bc0678bSSeungwon Jeon } 1281881d1c25SSeungwon Jeon } 1282881d1c25SSeungwon Jeon 1283abd9ac14SSeungwon Jeon /* 1284abd9ac14SSeungwon Jeon * The mandatory minimum values are defined for packed command. 1285abd9ac14SSeungwon Jeon * read: 5, write: 3 1286abd9ac14SSeungwon Jeon */ 1287abd9ac14SSeungwon Jeon if (card->ext_csd.max_packed_writes >= 3 && 1288abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads >= 5 && 1289abd9ac14SSeungwon Jeon host->caps2 & MMC_CAP2_PACKED_CMD) { 1290abd9ac14SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1291abd9ac14SSeungwon Jeon EXT_CSD_EXP_EVENTS_CTRL, 1292abd9ac14SSeungwon Jeon EXT_CSD_PACKED_EVENT_EN, 1293abd9ac14SSeungwon Jeon card->ext_csd.generic_cmd6_time); 1294abd9ac14SSeungwon Jeon if (err && err != -EBADMSG) 1295abd9ac14SSeungwon Jeon goto free_card; 1296abd9ac14SSeungwon Jeon if (err) { 1297abd9ac14SSeungwon Jeon pr_warn("%s: Enabling packed event failed\n", 1298abd9ac14SSeungwon Jeon mmc_hostname(card->host)); 1299abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 0; 1300abd9ac14SSeungwon Jeon err = 0; 1301abd9ac14SSeungwon Jeon } else { 1302abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 1; 1303abd9ac14SSeungwon Jeon } 1304abd9ac14SSeungwon Jeon } 1305abd9ac14SSeungwon Jeon 13066abaa0c9SPierre Ossman if (!oldcard) 13077ea239d9SPierre Ossman host->card = card; 13087ea239d9SPierre Ossman 130908ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 131017b0429dSPierre Ossman return 0; 13116abaa0c9SPierre Ossman 13126abaa0c9SPierre Ossman free_card: 13136abaa0c9SPierre Ossman if (!oldcard) 13146abaa0c9SPierre Ossman mmc_remove_card(card); 13156abaa0c9SPierre Ossman err: 131608ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 13176abaa0c9SPierre Ossman 1318adf66a0dSPierre Ossman return err; 13196abaa0c9SPierre Ossman } 13206abaa0c9SPierre Ossman 1321e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1322e6c08586SUlf Hansson { 1323e6c08586SUlf Hansson return card && 1324e6c08586SUlf Hansson mmc_card_mmc(card) && 1325e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1326e6c08586SUlf Hansson } 1327e6c08586SUlf Hansson 1328e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1329e6c08586SUlf Hansson { 1330e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1331e6c08586SUlf Hansson int err; 1332e6c08586SUlf Hansson 1333e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1334e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1335e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1336e6c08586SUlf Hansson 1337e6c08586SUlf Hansson err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1338e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 1339e6c08586SUlf Hansson notify_type, timeout); 1340e6c08586SUlf Hansson if (err) 1341e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1342e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1343e6c08586SUlf Hansson 1344e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 1345e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 1346e6c08586SUlf Hansson 1347e6c08586SUlf Hansson return err; 1348e6c08586SUlf Hansson } 1349e6c08586SUlf Hansson 13506abaa0c9SPierre Ossman /* 13516abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 13526abaa0c9SPierre Ossman */ 13536abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 13546abaa0c9SPierre Ossman { 13556abaa0c9SPierre Ossman BUG_ON(!host); 13566abaa0c9SPierre Ossman BUG_ON(!host->card); 13576abaa0c9SPierre Ossman 13586abaa0c9SPierre Ossman mmc_remove_card(host->card); 13596abaa0c9SPierre Ossman host->card = NULL; 13606abaa0c9SPierre Ossman } 13616abaa0c9SPierre Ossman 13626abaa0c9SPierre Ossman /* 1363d3049504SAdrian Hunter * Card detection - card is alive. 1364d3049504SAdrian Hunter */ 1365d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1366d3049504SAdrian Hunter { 1367d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1368d3049504SAdrian Hunter } 1369d3049504SAdrian Hunter 1370d3049504SAdrian Hunter /* 13716abaa0c9SPierre Ossman * Card detection callback from host. 13726abaa0c9SPierre Ossman */ 13736abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 13746abaa0c9SPierre Ossman { 13756abaa0c9SPierre Ossman int err; 13766abaa0c9SPierre Ossman 13776abaa0c9SPierre Ossman BUG_ON(!host); 13786abaa0c9SPierre Ossman BUG_ON(!host->card); 13796abaa0c9SPierre Ossman 13806abaa0c9SPierre Ossman mmc_claim_host(host); 13816abaa0c9SPierre Ossman 13826abaa0c9SPierre Ossman /* 13836abaa0c9SPierre Ossman * Just check if our card has been removed. 13846abaa0c9SPierre Ossman */ 1385d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 13866abaa0c9SPierre Ossman 13877ea239d9SPierre Ossman mmc_release_host(host); 13887ea239d9SPierre Ossman 138917b0429dSPierre Ossman if (err) { 13904101c16aSPierre Ossman mmc_remove(host); 13916abaa0c9SPierre Ossman 13926abaa0c9SPierre Ossman mmc_claim_host(host); 13936abaa0c9SPierre Ossman mmc_detach_bus(host); 13947f7e4129SUlf Hansson mmc_power_off(host); 13956abaa0c9SPierre Ossman mmc_release_host(host); 13966abaa0c9SPierre Ossman } 13976abaa0c9SPierre Ossman } 13986abaa0c9SPierre Ossman 13996abaa0c9SPierre Ossman /* 14006abaa0c9SPierre Ossman * Suspend callback from host. 14016abaa0c9SPierre Ossman */ 140295cdfb72SNicolas Pitre static int mmc_suspend(struct mmc_host *host) 14036abaa0c9SPierre Ossman { 1404c3805467SBalaji T K int err = 0; 1405c3805467SBalaji T K 14066abaa0c9SPierre Ossman BUG_ON(!host); 14076abaa0c9SPierre Ossman BUG_ON(!host->card); 14086abaa0c9SPierre Ossman 14096abaa0c9SPierre Ossman mmc_claim_host(host); 1410881d926dSMaya Erez 1411881d926dSMaya Erez err = mmc_cache_ctrl(host, 0); 1412881d926dSMaya Erez if (err) 1413881d926dSMaya Erez goto out; 1414881d926dSMaya Erez 1415e6c08586SUlf Hansson if (mmc_can_poweroff_notify(host->card)) 1416e6c08586SUlf Hansson err = mmc_poweroff_notify(host->card, EXT_CSD_POWER_OFF_SHORT); 1417e6c08586SUlf Hansson else if (mmc_card_can_sleep(host)) 1418c3805467SBalaji T K err = mmc_card_sleep(host); 1419e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 142085e727edSJaehoon Chung err = mmc_deselect_cards(host); 14213e73c36bSGirish K S host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); 142295cdfb72SNicolas Pitre 1423881d926dSMaya Erez out: 1424881d926dSMaya Erez mmc_release_host(host); 1425c3805467SBalaji T K return err; 14266abaa0c9SPierre Ossman } 14276abaa0c9SPierre Ossman 14286abaa0c9SPierre Ossman /* 14296abaa0c9SPierre Ossman * Resume callback from host. 14306abaa0c9SPierre Ossman * 14316abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 14326abaa0c9SPierre Ossman * and, if so, restore all state to it. 14336abaa0c9SPierre Ossman */ 143495cdfb72SNicolas Pitre static int mmc_resume(struct mmc_host *host) 14356abaa0c9SPierre Ossman { 14366abaa0c9SPierre Ossman int err; 14376abaa0c9SPierre Ossman 14386abaa0c9SPierre Ossman BUG_ON(!host); 14396abaa0c9SPierre Ossman BUG_ON(!host->card); 14406abaa0c9SPierre Ossman 14416abaa0c9SPierre Ossman mmc_claim_host(host); 14428c75deaeSPierre Ossman err = mmc_init_card(host, host->ocr, host->card); 14432986d0bfSPierre Ossman mmc_release_host(host); 14442986d0bfSPierre Ossman 144595cdfb72SNicolas Pitre return err; 14466abaa0c9SPierre Ossman } 14476abaa0c9SPierre Ossman 144812ae637fSOhad Ben-Cohen static int mmc_power_restore(struct mmc_host *host) 1449eae1aeeeSAdrian Hunter { 145012ae637fSOhad Ben-Cohen int ret; 145112ae637fSOhad Ben-Cohen 14523e73c36bSGirish K S host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); 1453eae1aeeeSAdrian Hunter mmc_claim_host(host); 145412ae637fSOhad Ben-Cohen ret = mmc_init_card(host, host->ocr, host->card); 1455eae1aeeeSAdrian Hunter mmc_release_host(host); 145612ae637fSOhad Ben-Cohen 145712ae637fSOhad Ben-Cohen return ret; 1458eae1aeeeSAdrian Hunter } 1459eae1aeeeSAdrian Hunter 1460b1ebe384SJarkko Lavinen static int mmc_sleep(struct mmc_host *host) 1461b1ebe384SJarkko Lavinen { 1462b1ebe384SJarkko Lavinen struct mmc_card *card = host->card; 1463b1ebe384SJarkko Lavinen int err = -ENOSYS; 1464b1ebe384SJarkko Lavinen 1465b1ebe384SJarkko Lavinen if (card && card->ext_csd.rev >= 3) { 1466b1ebe384SJarkko Lavinen err = mmc_card_sleepawake(host, 1); 1467b1ebe384SJarkko Lavinen if (err < 0) 1468b1ebe384SJarkko Lavinen pr_debug("%s: Error %d while putting card into sleep", 1469b1ebe384SJarkko Lavinen mmc_hostname(host), err); 1470b1ebe384SJarkko Lavinen } 1471b1ebe384SJarkko Lavinen 1472b1ebe384SJarkko Lavinen return err; 1473b1ebe384SJarkko Lavinen } 1474b1ebe384SJarkko Lavinen 1475b1ebe384SJarkko Lavinen static int mmc_awake(struct mmc_host *host) 1476b1ebe384SJarkko Lavinen { 1477b1ebe384SJarkko Lavinen struct mmc_card *card = host->card; 1478b1ebe384SJarkko Lavinen int err = -ENOSYS; 1479b1ebe384SJarkko Lavinen 1480b1ebe384SJarkko Lavinen if (card && card->ext_csd.rev >= 3) { 1481b1ebe384SJarkko Lavinen err = mmc_card_sleepawake(host, 0); 1482b1ebe384SJarkko Lavinen if (err < 0) 1483b1ebe384SJarkko Lavinen pr_debug("%s: Error %d while awaking sleeping card", 1484b1ebe384SJarkko Lavinen mmc_hostname(host), err); 1485b1ebe384SJarkko Lavinen } 1486b1ebe384SJarkko Lavinen 1487b1ebe384SJarkko Lavinen return err; 1488b1ebe384SJarkko Lavinen } 1489b1ebe384SJarkko Lavinen 14909feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 1491b1ebe384SJarkko Lavinen .awake = mmc_awake, 1492b1ebe384SJarkko Lavinen .sleep = mmc_sleep, 14939feae246SAdrian Hunter .remove = mmc_remove, 14949feae246SAdrian Hunter .detect = mmc_detect, 14959feae246SAdrian Hunter .suspend = NULL, 14969feae246SAdrian Hunter .resume = NULL, 1497eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1498d3049504SAdrian Hunter .alive = mmc_alive, 14999feae246SAdrian Hunter }; 15009feae246SAdrian Hunter 15019feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops_unsafe = { 1502b1ebe384SJarkko Lavinen .awake = mmc_awake, 1503b1ebe384SJarkko Lavinen .sleep = mmc_sleep, 15049feae246SAdrian Hunter .remove = mmc_remove, 15059feae246SAdrian Hunter .detect = mmc_detect, 15069feae246SAdrian Hunter .suspend = mmc_suspend, 15079feae246SAdrian Hunter .resume = mmc_resume, 1508eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1509d3049504SAdrian Hunter .alive = mmc_alive, 15109feae246SAdrian Hunter }; 15119feae246SAdrian Hunter 15129feae246SAdrian Hunter static void mmc_attach_bus_ops(struct mmc_host *host) 15139feae246SAdrian Hunter { 15149feae246SAdrian Hunter const struct mmc_bus_ops *bus_ops; 15159feae246SAdrian Hunter 151671d7d3d1SMatt Fleming if (!mmc_card_is_removable(host)) 15179feae246SAdrian Hunter bus_ops = &mmc_ops_unsafe; 15189feae246SAdrian Hunter else 15199feae246SAdrian Hunter bus_ops = &mmc_ops; 15209feae246SAdrian Hunter mmc_attach_bus(host, bus_ops); 15219feae246SAdrian Hunter } 15229feae246SAdrian Hunter 15236abaa0c9SPierre Ossman /* 15246abaa0c9SPierre Ossman * Starting point for MMC card init. 15256abaa0c9SPierre Ossman */ 1526807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 15276abaa0c9SPierre Ossman { 15286abaa0c9SPierre Ossman int err; 1529807e8e40SAndy Ross u32 ocr; 15306abaa0c9SPierre Ossman 15316abaa0c9SPierre Ossman BUG_ON(!host); 1532d84075c8SPierre Ossman WARN_ON(!host->claimed); 15336abaa0c9SPierre Ossman 153444669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 153544669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 153644669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 153744669034SStefan Nilsson XK 1538807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 1539807e8e40SAndy Ross if (err) 1540807e8e40SAndy Ross return err; 1541807e8e40SAndy Ross 15429feae246SAdrian Hunter mmc_attach_bus_ops(host); 15438f230f45STakashi Iwai if (host->ocr_avail_mmc) 15448f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 15456abaa0c9SPierre Ossman 15466abaa0c9SPierre Ossman /* 1547af517150SDavid Brownell * We need to get OCR a different way for SPI. 1548af517150SDavid Brownell */ 1549af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1550af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 1551af517150SDavid Brownell if (err) 1552af517150SDavid Brownell goto err; 1553af517150SDavid Brownell } 1554af517150SDavid Brownell 1555af517150SDavid Brownell /* 15566abaa0c9SPierre Ossman * Sanity check the voltages that the card claims to 15576abaa0c9SPierre Ossman * support. 15586abaa0c9SPierre Ossman */ 15596abaa0c9SPierre Ossman if (ocr & 0x7F) { 1560a3c76eb9SGirish K S pr_warning("%s: card claims to support voltages " 15616abaa0c9SPierre Ossman "below the defined range. These will be ignored.\n", 15626abaa0c9SPierre Ossman mmc_hostname(host)); 15636abaa0c9SPierre Ossman ocr &= ~0x7F; 15646abaa0c9SPierre Ossman } 15656abaa0c9SPierre Ossman 15666abaa0c9SPierre Ossman host->ocr = mmc_select_voltage(host, ocr); 15676abaa0c9SPierre Ossman 15686abaa0c9SPierre Ossman /* 15696abaa0c9SPierre Ossman * Can we support the voltage of the card? 15706abaa0c9SPierre Ossman */ 1571109b5bedSPierre Ossman if (!host->ocr) { 1572109b5bedSPierre Ossman err = -EINVAL; 15736abaa0c9SPierre Ossman goto err; 1574109b5bedSPierre Ossman } 15756abaa0c9SPierre Ossman 15766abaa0c9SPierre Ossman /* 15776abaa0c9SPierre Ossman * Detect and init the card. 15786abaa0c9SPierre Ossman */ 15798c75deaeSPierre Ossman err = mmc_init_card(host, host->ocr, NULL); 158017b0429dSPierre Ossman if (err) 15816abaa0c9SPierre Ossman goto err; 15826abaa0c9SPierre Ossman 15836abaa0c9SPierre Ossman mmc_release_host(host); 15844101c16aSPierre Ossman err = mmc_add_card(host->card); 1585807e8e40SAndy Ross mmc_claim_host(host); 15867ea239d9SPierre Ossman if (err) 15872986d0bfSPierre Ossman goto remove_card; 15887ea239d9SPierre Ossman 15897ea239d9SPierre Ossman return 0; 15907ea239d9SPierre Ossman 15912986d0bfSPierre Ossman remove_card: 1592807e8e40SAndy Ross mmc_release_host(host); 15936abaa0c9SPierre Ossman mmc_remove_card(host->card); 15942986d0bfSPierre Ossman mmc_claim_host(host); 1595807e8e40SAndy Ross host->card = NULL; 15967ea239d9SPierre Ossman err: 15977ea239d9SPierre Ossman mmc_detach_bus(host); 15987ea239d9SPierre Ossman 1599a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 1600109b5bedSPierre Ossman mmc_hostname(host), err); 1601109b5bedSPierre Ossman 1602adf66a0dSPierre Ossman return err; 16037ea239d9SPierre Ossman } 1604