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 23808ee80ccSPhilip Rakity /* 23908ee80ccSPhilip Rakity * Decode extended CSD. 24008ee80ccSPhilip Rakity */ 24108ee80ccSPhilip Rakity static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) 24208ee80ccSPhilip Rakity { 243e0c368d5SNamjae Jeon int err = 0, idx; 244e0c368d5SNamjae Jeon unsigned int part_size; 245e0c368d5SNamjae Jeon u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; 24608ee80ccSPhilip Rakity 24708ee80ccSPhilip Rakity BUG_ON(!card); 24808ee80ccSPhilip Rakity 24908ee80ccSPhilip Rakity if (!ext_csd) 25008ee80ccSPhilip Rakity return 0; 25108ee80ccSPhilip Rakity 2526da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 253f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 2546da24b78SKyungmin Park if (card->csd.structure == 3) { 255f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 256a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 2578fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 258f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 2596da24b78SKyungmin Park err = -EINVAL; 2606da24b78SKyungmin Park goto out; 2616da24b78SKyungmin Park } 2626da24b78SKyungmin Park } 2636da24b78SKyungmin Park 2646da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 26538ca2850SKyungmin Park if (card->ext_csd.rev > 6) { 266a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD revision %d\n", 2676da24b78SKyungmin Park mmc_hostname(card->host), card->ext_csd.rev); 26800cedfa6SFlorin Malita err = -EINVAL; 26900cedfa6SFlorin Malita goto out; 270d7604d76SPierre Ossman } 271d7604d76SPierre Ossman 272f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 273f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 274f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 275f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 276b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 2777ea239d9SPierre Ossman card->ext_csd.sectors = 2787ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 2797ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 2807ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 2817ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 282fc8a0985SHanumath Prasad 283fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 284fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 2857ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 286d7604d76SPierre Ossman } 287f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 2887198f3c9SAdrian Hunter switch (ext_csd[EXT_CSD_CARD_TYPE] & EXT_CSD_CARD_TYPE_MASK) { 289dfc13e84SHanumath Prasad case EXT_CSD_CARD_TYPE_DDR_52 | EXT_CSD_CARD_TYPE_52 | 290dfc13e84SHanumath Prasad EXT_CSD_CARD_TYPE_26: 291dfc13e84SHanumath Prasad card->ext_csd.hs_max_dtr = 52000000; 292dfc13e84SHanumath Prasad card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_52; 293dfc13e84SHanumath Prasad break; 294dfc13e84SHanumath Prasad case EXT_CSD_CARD_TYPE_DDR_1_2V | EXT_CSD_CARD_TYPE_52 | 295dfc13e84SHanumath Prasad EXT_CSD_CARD_TYPE_26: 296dfc13e84SHanumath Prasad card->ext_csd.hs_max_dtr = 52000000; 297dfc13e84SHanumath Prasad card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_1_2V; 298dfc13e84SHanumath Prasad break; 299dfc13e84SHanumath Prasad case EXT_CSD_CARD_TYPE_DDR_1_8V | EXT_CSD_CARD_TYPE_52 | 300dfc13e84SHanumath Prasad EXT_CSD_CARD_TYPE_26: 301dfc13e84SHanumath Prasad card->ext_csd.hs_max_dtr = 52000000; 302dfc13e84SHanumath Prasad card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_1_8V; 303dfc13e84SHanumath Prasad break; 3047ea239d9SPierre Ossman case EXT_CSD_CARD_TYPE_52 | EXT_CSD_CARD_TYPE_26: 3057ea239d9SPierre Ossman card->ext_csd.hs_max_dtr = 52000000; 3067ea239d9SPierre Ossman break; 3077ea239d9SPierre Ossman case EXT_CSD_CARD_TYPE_26: 3087ea239d9SPierre Ossman card->ext_csd.hs_max_dtr = 26000000; 3097ea239d9SPierre Ossman break; 3107ea239d9SPierre Ossman default: 3117ea239d9SPierre Ossman /* MMC v4 spec says this cannot happen */ 312a3c76eb9SGirish K S pr_warning("%s: card is mmc v4 but doesn't " 3137ea239d9SPierre Ossman "support any high-speed modes.\n", 3147ea239d9SPierre Ossman mmc_hostname(card->host)); 3157ea239d9SPierre Ossman } 3167ea239d9SPierre Ossman 317f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 318f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 319f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 320f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 321f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 322b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 323b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 324371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 325371a689fSAndrei Warkentin 326371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 327371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 328b1ebe384SJarkko Lavinen 329b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 330b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 331b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 332b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 333dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 334dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 335dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 336dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 337dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 338dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 339f4c5522bSAndrei Warkentin 340f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 341371a689fSAndrei Warkentin 342371a689fSAndrei Warkentin /* 343371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 344371a689fSAndrei Warkentin * multiples of 128K. 345371a689fSAndrei Warkentin */ 346e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 347e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 348e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 349e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 350e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 351add710eaSJohan Rudholm "boot%d", idx, true, 352add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 353e0c368d5SNamjae Jeon } 354e0c368d5SNamjae Jeon } 355b1ebe384SJarkko Lavinen } 356b1ebe384SJarkko Lavinen 357f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 358f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_PARTITION_ATTRIBUTE]; 359f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 360f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 361f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 362f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 363f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 364f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 365f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 366f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 367dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 368709de99dSChuanxiao Dong /* 369709de99dSChuanxiao Dong * Enhanced area feature support -- check whether the eMMC 370709de99dSChuanxiao Dong * card has the Enhanced area enabled. If so, export enhanced 371709de99dSChuanxiao Dong * area offset and size to user by adding sysfs interface. 372709de99dSChuanxiao Dong */ 3735238acbeSAndrei Warkentin card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 374709de99dSChuanxiao Dong if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 375709de99dSChuanxiao Dong (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 376e0c368d5SNamjae Jeon hc_erase_grp_sz = 377709de99dSChuanxiao Dong ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 378e0c368d5SNamjae Jeon hc_wp_grp_sz = 379709de99dSChuanxiao Dong ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 380709de99dSChuanxiao Dong 381709de99dSChuanxiao Dong card->ext_csd.enhanced_area_en = 1; 382709de99dSChuanxiao Dong /* 383709de99dSChuanxiao Dong * calculate the enhanced data area offset, in bytes 384709de99dSChuanxiao Dong */ 385709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = 386709de99dSChuanxiao Dong (ext_csd[139] << 24) + (ext_csd[138] << 16) + 387709de99dSChuanxiao Dong (ext_csd[137] << 8) + ext_csd[136]; 388709de99dSChuanxiao Dong if (mmc_card_blockaddr(card)) 389709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset <<= 9; 390709de99dSChuanxiao Dong /* 391709de99dSChuanxiao Dong * calculate the enhanced data area size, in kilobytes 392709de99dSChuanxiao Dong */ 393709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = 394709de99dSChuanxiao Dong (ext_csd[142] << 16) + (ext_csd[141] << 8) + 395709de99dSChuanxiao Dong ext_csd[140]; 396709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size *= 397709de99dSChuanxiao Dong (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 398709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size <<= 9; 399709de99dSChuanxiao Dong } else { 400709de99dSChuanxiao Dong /* 401709de99dSChuanxiao Dong * If the enhanced area is not enabled, disable these 402709de99dSChuanxiao Dong * device attributes. 403709de99dSChuanxiao Dong */ 404709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 405709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 406709de99dSChuanxiao Dong } 407e0c368d5SNamjae Jeon 408e0c368d5SNamjae Jeon /* 409e0c368d5SNamjae Jeon * General purpose partition feature support -- 410e0c368d5SNamjae Jeon * If ext_csd has the size of general purpose partitions, 411e0c368d5SNamjae Jeon * set size, part_cfg, partition name in mmc_part. 412e0c368d5SNamjae Jeon */ 413e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 414e0c368d5SNamjae Jeon EXT_CSD_PART_SUPPORT_PART_EN) { 415e0c368d5SNamjae Jeon if (card->ext_csd.enhanced_area_en != 1) { 416e0c368d5SNamjae Jeon hc_erase_grp_sz = 417e0c368d5SNamjae Jeon ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 418e0c368d5SNamjae Jeon hc_wp_grp_sz = 419e0c368d5SNamjae Jeon ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 420e0c368d5SNamjae Jeon 421e0c368d5SNamjae Jeon card->ext_csd.enhanced_area_en = 1; 422e0c368d5SNamjae Jeon } 423e0c368d5SNamjae Jeon 424e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 425e0c368d5SNamjae Jeon if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 426e0c368d5SNamjae Jeon !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 427e0c368d5SNamjae Jeon !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 428e0c368d5SNamjae Jeon continue; 429e0c368d5SNamjae Jeon part_size = 430e0c368d5SNamjae Jeon (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 431e0c368d5SNamjae Jeon << 16) + 432e0c368d5SNamjae Jeon (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 433e0c368d5SNamjae Jeon << 8) + 434e0c368d5SNamjae Jeon ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 435e0c368d5SNamjae Jeon part_size *= (size_t)(hc_erase_grp_sz * 436e0c368d5SNamjae Jeon hc_wp_grp_sz); 437e0c368d5SNamjae Jeon mmc_part_add(card, part_size << 19, 438e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 439add710eaSJohan Rudholm "gp%d", idx, false, 440add710eaSJohan Rudholm MMC_BLK_DATA_AREA_GP); 441e0c368d5SNamjae Jeon } 442e0c368d5SNamjae Jeon } 443dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 444dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 445dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 446dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 447dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 448dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 449dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 450dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 451add710eaSJohan Rudholm 452add710eaSJohan Rudholm /* 453add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 454add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 455add710eaSJohan Rudholm * take into account the value of boot_locked below. 456add710eaSJohan Rudholm */ 457add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 458add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 459dfe86cbaSAdrian Hunter } 460dfe86cbaSAdrian Hunter 461b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 462eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 463eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { 464eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 465eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 466eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 467eb0d8f13SJaehoon Chung else 468eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 469eb0d8f13SJaehoon Chung /* 470eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 471eb0d8f13SJaehoon Chung * a command interrupted by HPI 472eb0d8f13SJaehoon Chung */ 473eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 474eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 475eb0d8f13SJaehoon Chung } 476eb0d8f13SJaehoon Chung 477f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 478b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 479b2499518SAdrian Hunter } 480f4c5522bSAndrei Warkentin 4815238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 482dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 483dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 484dfe86cbaSAdrian Hunter else 485dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 486dfe86cbaSAdrian Hunter 487336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 488bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 489336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 490336c716aSSeungwon Jeon 491b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 492b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 493bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 494bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 495b23cf0bdSSeungwon Jeon 496881d1c25SSeungwon Jeon card->ext_csd.cache_size = 497881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 498881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 499881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 500881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 501336c716aSSeungwon Jeon } 502881d1c25SSeungwon Jeon 5037ea239d9SPierre Ossman out: 50408ee80ccSPhilip Rakity return err; 50508ee80ccSPhilip Rakity } 5067ea239d9SPierre Ossman 50708ee80ccSPhilip Rakity static inline void mmc_free_ext_csd(u8 *ext_csd) 50808ee80ccSPhilip Rakity { 50908ee80ccSPhilip Rakity kfree(ext_csd); 51008ee80ccSPhilip Rakity } 51108ee80ccSPhilip Rakity 51208ee80ccSPhilip Rakity 513f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 51408ee80ccSPhilip Rakity { 51508ee80ccSPhilip Rakity u8 *bw_ext_csd; 51608ee80ccSPhilip Rakity int err; 51708ee80ccSPhilip Rakity 518f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 519f39b2dd9SPhilip Rakity return 0; 52008ee80ccSPhilip Rakity 521f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 522f39b2dd9SPhilip Rakity 523f39b2dd9SPhilip Rakity if (err || bw_ext_csd == NULL) { 52408ee80ccSPhilip Rakity if (bus_width != MMC_BUS_WIDTH_1) 52508ee80ccSPhilip Rakity err = -EINVAL; 52608ee80ccSPhilip Rakity goto out; 52708ee80ccSPhilip Rakity } 52808ee80ccSPhilip Rakity 52908ee80ccSPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 53008ee80ccSPhilip Rakity goto out; 53108ee80ccSPhilip Rakity 53208ee80ccSPhilip Rakity /* only compare read only fields */ 533f39b2dd9SPhilip Rakity err = (!(card->ext_csd.raw_partition_support == 53408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 535f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 53608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 537f39b2dd9SPhilip Rakity (card->ext_csd.rev == 53808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 539f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 54008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 541f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 54208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 543f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 54408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 545f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 54608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 547f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 54808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 549f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 55008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 551f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 55208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 553f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 55408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 555f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 55608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 557f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 55808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 559f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 560f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 561f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 562f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 563f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 564f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 565f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 566f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 3])); 56708ee80ccSPhilip Rakity if (err) 56808ee80ccSPhilip Rakity err = -EINVAL; 56908ee80ccSPhilip Rakity 57008ee80ccSPhilip Rakity out: 57108ee80ccSPhilip Rakity mmc_free_ext_csd(bw_ext_csd); 5727ea239d9SPierre Ossman return err; 5737ea239d9SPierre Ossman } 5747ea239d9SPierre Ossman 57551ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 57651ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 57751ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 57851ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 57951ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 580dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 581dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 58251ec92e2SPierre Ossman MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); 58351ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 58451ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 58551ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 58651ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 58751ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 588709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 589709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 590709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 59151ec92e2SPierre Ossman 59251ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 59351ec92e2SPierre Ossman &dev_attr_cid.attr, 59451ec92e2SPierre Ossman &dev_attr_csd.attr, 59551ec92e2SPierre Ossman &dev_attr_date.attr, 596dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 597dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 59851ec92e2SPierre Ossman &dev_attr_fwrev.attr, 59951ec92e2SPierre Ossman &dev_attr_hwrev.attr, 60051ec92e2SPierre Ossman &dev_attr_manfid.attr, 60151ec92e2SPierre Ossman &dev_attr_name.attr, 60251ec92e2SPierre Ossman &dev_attr_oemid.attr, 60351ec92e2SPierre Ossman &dev_attr_serial.attr, 604709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 605709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 60651ec92e2SPierre Ossman NULL, 60751ec92e2SPierre Ossman }; 60851ec92e2SPierre Ossman 60951ec92e2SPierre Ossman static struct attribute_group mmc_std_attr_group = { 61051ec92e2SPierre Ossman .attrs = mmc_std_attrs, 61151ec92e2SPierre Ossman }; 61251ec92e2SPierre Ossman 613a4dbd674SDavid Brownell static const struct attribute_group *mmc_attr_groups[] = { 61451ec92e2SPierre Ossman &mmc_std_attr_group, 61551ec92e2SPierre Ossman NULL, 61651ec92e2SPierre Ossman }; 61751ec92e2SPierre Ossman 61851ec92e2SPierre Ossman static struct device_type mmc_type = { 61951ec92e2SPierre Ossman .groups = mmc_attr_groups, 62051ec92e2SPierre Ossman }; 62151ec92e2SPierre Ossman 6227ea239d9SPierre Ossman /* 623b87d8dbfSGirish K S * Select the PowerClass for the current bus width 624b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 625b87d8dbfSGirish K S * extended CSD register, select it by executing the 626b87d8dbfSGirish K S * mmc_switch command. 627b87d8dbfSGirish K S */ 628b87d8dbfSGirish K S static int mmc_select_powerclass(struct mmc_card *card, 629b87d8dbfSGirish K S unsigned int bus_width, u8 *ext_csd) 630b87d8dbfSGirish K S { 631b87d8dbfSGirish K S int err = 0; 632b87d8dbfSGirish K S unsigned int pwrclass_val; 633b87d8dbfSGirish K S unsigned int index = 0; 634b87d8dbfSGirish K S struct mmc_host *host; 635b87d8dbfSGirish K S 636b87d8dbfSGirish K S BUG_ON(!card); 637b87d8dbfSGirish K S 638b87d8dbfSGirish K S host = card->host; 639b87d8dbfSGirish K S BUG_ON(!host); 640b87d8dbfSGirish K S 641b87d8dbfSGirish K S if (ext_csd == NULL) 642b87d8dbfSGirish K S return 0; 643b87d8dbfSGirish K S 644b87d8dbfSGirish K S /* Power class selection is supported for versions >= 4.0 */ 645b87d8dbfSGirish K S if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 646b87d8dbfSGirish K S return 0; 647b87d8dbfSGirish K S 648b87d8dbfSGirish K S /* Power class values are defined only for 4/8 bit bus */ 649b87d8dbfSGirish K S if (bus_width == EXT_CSD_BUS_WIDTH_1) 650b87d8dbfSGirish K S return 0; 651b87d8dbfSGirish K S 652b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 653b87d8dbfSGirish K S case MMC_VDD_165_195: 654b87d8dbfSGirish K S if (host->ios.clock <= 26000000) 655b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_26_195; 656b87d8dbfSGirish K S else if (host->ios.clock <= 52000000) 657b87d8dbfSGirish K S index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 658b87d8dbfSGirish K S EXT_CSD_PWR_CL_52_195 : 659b87d8dbfSGirish K S EXT_CSD_PWR_CL_DDR_52_195; 660b87d8dbfSGirish K S else if (host->ios.clock <= 200000000) 661b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_200_195; 662b87d8dbfSGirish K S break; 663b87d8dbfSGirish K S case MMC_VDD_32_33: 664b87d8dbfSGirish K S case MMC_VDD_33_34: 665b87d8dbfSGirish K S case MMC_VDD_34_35: 666b87d8dbfSGirish K S case MMC_VDD_35_36: 667b87d8dbfSGirish K S if (host->ios.clock <= 26000000) 668b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_26_360; 669b87d8dbfSGirish K S else if (host->ios.clock <= 52000000) 670b87d8dbfSGirish K S index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 671b87d8dbfSGirish K S EXT_CSD_PWR_CL_52_360 : 672b87d8dbfSGirish K S EXT_CSD_PWR_CL_DDR_52_360; 673b87d8dbfSGirish K S else if (host->ios.clock <= 200000000) 674b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_200_360; 675b87d8dbfSGirish K S break; 676b87d8dbfSGirish K S default: 677b87d8dbfSGirish K S pr_warning("%s: Voltage range not supported " 678b87d8dbfSGirish K S "for power class.\n", mmc_hostname(host)); 679b87d8dbfSGirish K S return -EINVAL; 680b87d8dbfSGirish K S } 681b87d8dbfSGirish K S 682b87d8dbfSGirish K S pwrclass_val = ext_csd[index]; 683b87d8dbfSGirish K S 684b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 685b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 686b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 687b87d8dbfSGirish K S else 688b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 689b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 690b87d8dbfSGirish K S 691b87d8dbfSGirish K S /* If the power class is different from the default value */ 692b87d8dbfSGirish K S if (pwrclass_val > 0) { 693b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 694b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 695b87d8dbfSGirish K S pwrclass_val, 69671fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 697b87d8dbfSGirish K S } 698b87d8dbfSGirish K S 699b87d8dbfSGirish K S return err; 700b87d8dbfSGirish K S } 701b87d8dbfSGirish K S 702b87d8dbfSGirish K S /* 7036abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 7046abaa0c9SPierre Ossman * 7058769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 7066abaa0c9SPierre Ossman * we're trying to reinitialise. 7077ea239d9SPierre Ossman */ 7088c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 7096abaa0c9SPierre Ossman struct mmc_card *oldcard) 7107ea239d9SPierre Ossman { 7117ea239d9SPierre Ossman struct mmc_card *card; 71225d5c699SPhilip Rakity int err, ddr = 0; 7137ea239d9SPierre Ossman u32 cid[4]; 7147ea239d9SPierre Ossman unsigned int max_dtr; 715b676f039SPhilip Rakity u32 rocr; 71608ee80ccSPhilip Rakity u8 *ext_csd = NULL; 7177ea239d9SPierre Ossman 7187ea239d9SPierre Ossman BUG_ON(!host); 719d84075c8SPierre Ossman WARN_ON(!host->claimed); 7207ea239d9SPierre Ossman 72144669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 72244669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 72344669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 72444669034SStefan Nilsson XK 7257ea239d9SPierre Ossman /* 7267ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 7277ea239d9SPierre Ossman * need to tell some cards to go back to the idle 7287ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 7297ea239d9SPierre Ossman * respond. 730c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 7317ea239d9SPierre Ossman */ 7327ea239d9SPierre Ossman mmc_go_idle(host); 7337ea239d9SPierre Ossman 7347ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 735b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 73617b0429dSPierre Ossman if (err) 7376abaa0c9SPierre Ossman goto err; 7387ea239d9SPierre Ossman 7397ea239d9SPierre Ossman /* 740af517150SDavid Brownell * For SPI, enable CRC as appropriate. 741af517150SDavid Brownell */ 742af517150SDavid Brownell if (mmc_host_is_spi(host)) { 743af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 744af517150SDavid Brownell if (err) 745af517150SDavid Brownell goto err; 746af517150SDavid Brownell } 747af517150SDavid Brownell 748af517150SDavid Brownell /* 7497ea239d9SPierre Ossman * Fetch CID from card. 7507ea239d9SPierre Ossman */ 751af517150SDavid Brownell if (mmc_host_is_spi(host)) 752af517150SDavid Brownell err = mmc_send_cid(host, cid); 753af517150SDavid Brownell else 7547ea239d9SPierre Ossman err = mmc_all_send_cid(host, cid); 75517b0429dSPierre Ossman if (err) 7567ea239d9SPierre Ossman goto err; 7577ea239d9SPierre Ossman 7586abaa0c9SPierre Ossman if (oldcard) { 759adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 760adf66a0dSPierre Ossman err = -ENOENT; 7616abaa0c9SPierre Ossman goto err; 762adf66a0dSPierre Ossman } 7636abaa0c9SPierre Ossman 7646abaa0c9SPierre Ossman card = oldcard; 7656abaa0c9SPierre Ossman } else { 7667ea239d9SPierre Ossman /* 7677ea239d9SPierre Ossman * Allocate card structure. 7687ea239d9SPierre Ossman */ 76951ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 770adf66a0dSPierre Ossman if (IS_ERR(card)) { 771adf66a0dSPierre Ossman err = PTR_ERR(card); 7727ea239d9SPierre Ossman goto err; 773adf66a0dSPierre Ossman } 7747ea239d9SPierre Ossman 7757ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 7767ea239d9SPierre Ossman card->rca = 1; 7777ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 7786abaa0c9SPierre Ossman } 7797ea239d9SPierre Ossman 7807ea239d9SPierre Ossman /* 781af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 7827ea239d9SPierre Ossman */ 783af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 7847ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 78517b0429dSPierre Ossman if (err) 7867ea239d9SPierre Ossman goto free_card; 7877ea239d9SPierre Ossman 7887ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 789af517150SDavid Brownell } 7907ea239d9SPierre Ossman 7916abaa0c9SPierre Ossman if (!oldcard) { 7927ea239d9SPierre Ossman /* 7937ea239d9SPierre Ossman * Fetch CSD from card. 7947ea239d9SPierre Ossman */ 7957ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 79617b0429dSPierre Ossman if (err) 7977ea239d9SPierre Ossman goto free_card; 7987ea239d9SPierre Ossman 799bd766312SPierre Ossman err = mmc_decode_csd(card); 800adf66a0dSPierre Ossman if (err) 801bd766312SPierre Ossman goto free_card; 802bd766312SPierre Ossman err = mmc_decode_cid(card); 803adf66a0dSPierre Ossman if (err) 804bd766312SPierre Ossman goto free_card; 8056abaa0c9SPierre Ossman } 8067ea239d9SPierre Ossman 8077ea239d9SPierre Ossman /* 80889a73cf5SPierre Ossman * Select card, as all following commands rely on that. 8097ea239d9SPierre Ossman */ 810af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 8117ea239d9SPierre Ossman err = mmc_select_card(card); 81217b0429dSPierre Ossman if (err) 8137ea239d9SPierre Ossman goto free_card; 814af517150SDavid Brownell } 8157ea239d9SPierre Ossman 8166abaa0c9SPierre Ossman if (!oldcard) { 81789a73cf5SPierre Ossman /* 818af517150SDavid Brownell * Fetch and process extended CSD. 81989a73cf5SPierre Ossman */ 82008ee80ccSPhilip Rakity 82108ee80ccSPhilip Rakity err = mmc_get_ext_csd(card, &ext_csd); 82208ee80ccSPhilip Rakity if (err) 82308ee80ccSPhilip Rakity goto free_card; 82408ee80ccSPhilip Rakity err = mmc_read_ext_csd(card, ext_csd); 82517b0429dSPierre Ossman if (err) 8267ea239d9SPierre Ossman goto free_card; 827b676f039SPhilip Rakity 828b676f039SPhilip Rakity /* If doing byte addressing, check if required to do sector 829b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 830b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 831b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 832b676f039SPhilip Rakity */ 833b676f039SPhilip Rakity if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) 834b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 835b676f039SPhilip Rakity 836dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 837dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 8386abaa0c9SPierre Ossman } 8397ea239d9SPierre Ossman 8407ea239d9SPierre Ossman /* 841709de99dSChuanxiao Dong * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF 842709de99dSChuanxiao Dong * bit. This bit will be lost every time after a reset or power off. 843709de99dSChuanxiao Dong */ 844709de99dSChuanxiao Dong if (card->ext_csd.enhanced_area_en) { 845709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 846b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 847b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 848709de99dSChuanxiao Dong 849709de99dSChuanxiao Dong if (err && err != -EBADMSG) 850709de99dSChuanxiao Dong goto free_card; 851709de99dSChuanxiao Dong 852709de99dSChuanxiao Dong if (err) { 853709de99dSChuanxiao Dong err = 0; 854709de99dSChuanxiao Dong /* 855709de99dSChuanxiao Dong * Just disable enhanced area off & sz 856709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 857709de99dSChuanxiao Dong * during next time reinit 858709de99dSChuanxiao Dong */ 859709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 860709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 861709de99dSChuanxiao Dong } else { 862709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 863709de99dSChuanxiao Dong /* 864709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 865709de99dSChuanxiao Dong * This will affect the erase size, so 866709de99dSChuanxiao Dong * here need to reset erase size 867709de99dSChuanxiao Dong */ 868709de99dSChuanxiao Dong mmc_set_erase_size(card); 869709de99dSChuanxiao Dong } 870709de99dSChuanxiao Dong } 871709de99dSChuanxiao Dong 872709de99dSChuanxiao Dong /* 87341e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 87441e2a489SPhilip Rakity */ 875371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 876371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 877371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 878371a689fSAndrei Warkentin card->ext_csd.part_config, 879371a689fSAndrei Warkentin card->ext_csd.part_time); 880371a689fSAndrei Warkentin if (err && err != -EBADMSG) 881371a689fSAndrei Warkentin goto free_card; 88241e2a489SPhilip Rakity } 88341e2a489SPhilip Rakity 88441e2a489SPhilip Rakity /* 885bec8726aSGirish K S * If the host supports the power_off_notify capability then 886bec8726aSGirish K S * set the notification byte in the ext_csd register of device 887bec8726aSGirish K S */ 888bec8726aSGirish K S if ((host->caps2 & MMC_CAP2_POWEROFF_NOTIFY) && 889a80f1627SGirish K S (card->ext_csd.rev >= 6)) { 890bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 891bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 892bec8726aSGirish K S EXT_CSD_POWER_ON, 893bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 894bec8726aSGirish K S if (err && err != -EBADMSG) 895bec8726aSGirish K S goto free_card; 896bec8726aSGirish K S 89796a85d54SGirish K S /* 89896a85d54SGirish K S * The err can be -EBADMSG or 0, 89996a85d54SGirish K S * so check for success and update the flag 90096a85d54SGirish K S */ 901bec8726aSGirish K S if (!err) 902bec8726aSGirish K S card->poweroff_notify_state = MMC_POWERED_ON; 90396a85d54SGirish K S } 904bec8726aSGirish K S 905bec8726aSGirish K S /* 90689a73cf5SPierre Ossman * Activate high speed (if supported) 90789a73cf5SPierre Ossman */ 90889a73cf5SPierre Ossman if ((card->ext_csd.hs_max_dtr != 0) && 90989a73cf5SPierre Ossman (host->caps & MMC_CAP_MMC_HIGHSPEED)) { 91089a73cf5SPierre Ossman err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 911b23cf0bdSSeungwon Jeon EXT_CSD_HS_TIMING, 1, 912b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 913ef0b27d4SAdrian Hunter if (err && err != -EBADMSG) 91489a73cf5SPierre Ossman goto free_card; 91589a73cf5SPierre Ossman 916ef0b27d4SAdrian Hunter if (err) { 917a3c76eb9SGirish K S pr_warning("%s: switch to highspeed failed\n", 918ef0b27d4SAdrian Hunter mmc_hostname(card->host)); 919ef0b27d4SAdrian Hunter err = 0; 920ef0b27d4SAdrian Hunter } else { 92189a73cf5SPierre Ossman mmc_card_set_highspeed(card); 92289a73cf5SPierre Ossman mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 92389a73cf5SPierre Ossman } 924ef0b27d4SAdrian Hunter } 92589a73cf5SPierre Ossman 92689a73cf5SPierre Ossman /* 927eb0d8f13SJaehoon Chung * Enable HPI feature (if supported) 928eb0d8f13SJaehoon Chung */ 929eb0d8f13SJaehoon Chung if (card->ext_csd.hpi) { 930eb0d8f13SJaehoon Chung err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 931eb0d8f13SJaehoon Chung EXT_CSD_HPI_MGMT, 1, 0); 932eb0d8f13SJaehoon Chung if (err && err != -EBADMSG) 933eb0d8f13SJaehoon Chung goto free_card; 934eb0d8f13SJaehoon Chung if (err) { 935eb0d8f13SJaehoon Chung pr_warning("%s: Enabling HPI failed\n", 936eb0d8f13SJaehoon Chung mmc_hostname(card->host)); 937eb0d8f13SJaehoon Chung err = 0; 938eb0d8f13SJaehoon Chung } else 939eb0d8f13SJaehoon Chung card->ext_csd.hpi_en = 1; 940eb0d8f13SJaehoon Chung } 941eb0d8f13SJaehoon Chung 942eb0d8f13SJaehoon Chung /* 9437ea239d9SPierre Ossman * Compute bus speed. 9447ea239d9SPierre Ossman */ 9457ea239d9SPierre Ossman max_dtr = (unsigned int)-1; 9467ea239d9SPierre Ossman 9477ea239d9SPierre Ossman if (mmc_card_highspeed(card)) { 9487ea239d9SPierre Ossman if (max_dtr > card->ext_csd.hs_max_dtr) 9497ea239d9SPierre Ossman max_dtr = card->ext_csd.hs_max_dtr; 9507ea239d9SPierre Ossman } else if (max_dtr > card->csd.max_dtr) { 9517ea239d9SPierre Ossman max_dtr = card->csd.max_dtr; 9527ea239d9SPierre Ossman } 9537ea239d9SPierre Ossman 9547ea239d9SPierre Ossman mmc_set_clock(host, max_dtr); 9557ea239d9SPierre Ossman 95689a73cf5SPierre Ossman /* 9570f8d8ea6SAdrian Hunter * Indicate DDR mode (if supported). 958dfc13e84SHanumath Prasad */ 959dfc13e84SHanumath Prasad if (mmc_card_highspeed(card)) { 960dfc13e84SHanumath Prasad if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) 9614c4cb171SPhilip Rakity && ((host->caps & (MMC_CAP_1_8V_DDR | 9624c4cb171SPhilip Rakity MMC_CAP_UHS_DDR50)) 9634c4cb171SPhilip Rakity == (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50))) 96449e3b5a4SAdrian Hunter ddr = MMC_1_8V_DDR_MODE; 965dfc13e84SHanumath Prasad else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) 9664c4cb171SPhilip Rakity && ((host->caps & (MMC_CAP_1_2V_DDR | 9674c4cb171SPhilip Rakity MMC_CAP_UHS_DDR50)) 9684c4cb171SPhilip Rakity == (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50))) 96949e3b5a4SAdrian Hunter ddr = MMC_1_2V_DDR_MODE; 970dfc13e84SHanumath Prasad } 971dfc13e84SHanumath Prasad 972dfc13e84SHanumath Prasad /* 9730f8d8ea6SAdrian Hunter * Activate wide bus and DDR (if supported). 97489a73cf5SPierre Ossman */ 97589a73cf5SPierre Ossman if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) && 976b30f8af3SJarkko Lavinen (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { 97722113efdSAries Lee static unsigned ext_csd_bits[][2] = { 97822113efdSAries Lee { EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 }, 97922113efdSAries Lee { EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 }, 98022113efdSAries Lee { EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 }, 98122113efdSAries Lee }; 98222113efdSAries Lee static unsigned bus_widths[] = { 98322113efdSAries Lee MMC_BUS_WIDTH_8, 98422113efdSAries Lee MMC_BUS_WIDTH_4, 98522113efdSAries Lee MMC_BUS_WIDTH_1 98622113efdSAries Lee }; 98722113efdSAries Lee unsigned idx, bus_width = 0; 988b30f8af3SJarkko Lavinen 98922113efdSAries Lee if (host->caps & MMC_CAP_8_BIT_DATA) 99022113efdSAries Lee idx = 0; 991dfc13e84SHanumath Prasad else 99222113efdSAries Lee idx = 1; 99322113efdSAries Lee for (; idx < ARRAY_SIZE(bus_widths); idx++) { 99422113efdSAries Lee bus_width = bus_widths[idx]; 99522113efdSAries Lee if (bus_width == MMC_BUS_WIDTH_1) 99622113efdSAries Lee ddr = 0; /* no DDR for 1-bit width */ 997b87d8dbfSGirish K S err = mmc_select_powerclass(card, ext_csd_bits[idx][0], 998b87d8dbfSGirish K S ext_csd); 999b87d8dbfSGirish K S if (err) 1000b87d8dbfSGirish K S pr_err("%s: power class selection to " 1001b87d8dbfSGirish K S "bus width %d failed\n", 1002b87d8dbfSGirish K S mmc_hostname(card->host), 1003b87d8dbfSGirish K S 1 << bus_width); 1004b87d8dbfSGirish K S 100522113efdSAries Lee err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 100622113efdSAries Lee EXT_CSD_BUS_WIDTH, 1007d3a8d95dSAndrei Warkentin ext_csd_bits[idx][0], 1008b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 100922113efdSAries Lee if (!err) { 10104c4cb171SPhilip Rakity mmc_set_bus_width(card->host, bus_width); 101108ee80ccSPhilip Rakity 101222113efdSAries Lee /* 101322113efdSAries Lee * If controller can't handle bus width test, 101408ee80ccSPhilip Rakity * compare ext_csd previously read in 1 bit mode 101508ee80ccSPhilip Rakity * against ext_csd at new bus width 101622113efdSAries Lee */ 101722113efdSAries Lee if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 101808ee80ccSPhilip Rakity err = mmc_compare_ext_csds(card, 101908ee80ccSPhilip Rakity bus_width); 102008ee80ccSPhilip Rakity else 102122113efdSAries Lee err = mmc_bus_test(card, bus_width); 102222113efdSAries Lee if (!err) 102322113efdSAries Lee break; 102422113efdSAries Lee } 1025b30f8af3SJarkko Lavinen } 1026b30f8af3SJarkko Lavinen 102722113efdSAries Lee if (!err && ddr) { 1028b87d8dbfSGirish K S err = mmc_select_powerclass(card, ext_csd_bits[idx][1], 1029b87d8dbfSGirish K S ext_csd); 1030b87d8dbfSGirish K S if (err) 1031b87d8dbfSGirish K S pr_err("%s: power class selection to " 1032b87d8dbfSGirish K S "bus width %d ddr %d failed\n", 1033b87d8dbfSGirish K S mmc_hostname(card->host), 1034b87d8dbfSGirish K S 1 << bus_width, ddr); 1035b87d8dbfSGirish K S 103689a73cf5SPierre Ossman err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 103722113efdSAries Lee EXT_CSD_BUS_WIDTH, 1038d3a8d95dSAndrei Warkentin ext_csd_bits[idx][1], 1039b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 104022113efdSAries Lee } 1041ef0b27d4SAdrian Hunter if (err) { 1042a3c76eb9SGirish K S pr_warning("%s: switch to bus width %d ddr %d " 1043ef0b27d4SAdrian Hunter "failed\n", mmc_hostname(card->host), 10440f8d8ea6SAdrian Hunter 1 << bus_width, ddr); 104522113efdSAries Lee goto free_card; 104622113efdSAries Lee } else if (ddr) { 10474c4cb171SPhilip Rakity /* 10484c4cb171SPhilip Rakity * eMMC cards can support 3.3V to 1.2V i/o (vccq) 10494c4cb171SPhilip Rakity * signaling. 10504c4cb171SPhilip Rakity * 10514c4cb171SPhilip Rakity * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 10524c4cb171SPhilip Rakity * 10534c4cb171SPhilip Rakity * 1.8V vccq at 3.3V core voltage (vcc) is not required 10544c4cb171SPhilip Rakity * in the JEDEC spec for DDR. 10554c4cb171SPhilip Rakity * 10564c4cb171SPhilip Rakity * Do not force change in vccq since we are obviously 10574c4cb171SPhilip Rakity * working and no change to vccq is needed. 10584c4cb171SPhilip Rakity * 10594c4cb171SPhilip Rakity * WARNING: eMMC rules are NOT the same as SD DDR 10604c4cb171SPhilip Rakity */ 10614c4cb171SPhilip Rakity if (ddr == EXT_CSD_CARD_TYPE_DDR_1_2V) { 10624c4cb171SPhilip Rakity err = mmc_set_signal_voltage(host, 10634c4cb171SPhilip Rakity MMC_SIGNAL_VOLTAGE_120, 0); 10644c4cb171SPhilip Rakity if (err) 10654c4cb171SPhilip Rakity goto err; 10664c4cb171SPhilip Rakity } 10670f8d8ea6SAdrian Hunter mmc_card_set_ddr_mode(card); 10684c4cb171SPhilip Rakity mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50); 10694c4cb171SPhilip Rakity mmc_set_bus_width(card->host, bus_width); 107089a73cf5SPierre Ossman } 1071ef0b27d4SAdrian Hunter } 107289a73cf5SPierre Ossman 1073881d1c25SSeungwon Jeon /* 1074881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1075881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1076881d1c25SSeungwon Jeon */ 1077881d1c25SSeungwon Jeon if ((host->caps2 & MMC_CAP2_CACHE_CTRL) && 1078881d1c25SSeungwon Jeon card->ext_csd.cache_size > 0) { 1079881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1080881d1c25SSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 0); 1081881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1082881d1c25SSeungwon Jeon goto free_card; 1083881d1c25SSeungwon Jeon 1084881d1c25SSeungwon Jeon /* 1085881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1086881d1c25SSeungwon Jeon */ 1087881d1c25SSeungwon Jeon card->ext_csd.cache_ctrl = err ? 0 : 1; 1088881d1c25SSeungwon Jeon } 1089881d1c25SSeungwon Jeon 10906abaa0c9SPierre Ossman if (!oldcard) 10917ea239d9SPierre Ossman host->card = card; 10927ea239d9SPierre Ossman 109308ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 109417b0429dSPierre Ossman return 0; 10956abaa0c9SPierre Ossman 10966abaa0c9SPierre Ossman free_card: 10976abaa0c9SPierre Ossman if (!oldcard) 10986abaa0c9SPierre Ossman mmc_remove_card(card); 10996abaa0c9SPierre Ossman err: 110008ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 11016abaa0c9SPierre Ossman 1102adf66a0dSPierre Ossman return err; 11036abaa0c9SPierre Ossman } 11046abaa0c9SPierre Ossman 11056abaa0c9SPierre Ossman /* 11066abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 11076abaa0c9SPierre Ossman */ 11086abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 11096abaa0c9SPierre Ossman { 11106abaa0c9SPierre Ossman BUG_ON(!host); 11116abaa0c9SPierre Ossman BUG_ON(!host->card); 11126abaa0c9SPierre Ossman 11136abaa0c9SPierre Ossman mmc_remove_card(host->card); 11146abaa0c9SPierre Ossman host->card = NULL; 11156abaa0c9SPierre Ossman } 11166abaa0c9SPierre Ossman 11176abaa0c9SPierre Ossman /* 1118d3049504SAdrian Hunter * Card detection - card is alive. 1119d3049504SAdrian Hunter */ 1120d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1121d3049504SAdrian Hunter { 1122d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1123d3049504SAdrian Hunter } 1124d3049504SAdrian Hunter 1125d3049504SAdrian Hunter /* 11266abaa0c9SPierre Ossman * Card detection callback from host. 11276abaa0c9SPierre Ossman */ 11286abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 11296abaa0c9SPierre Ossman { 11306abaa0c9SPierre Ossman int err; 11316abaa0c9SPierre Ossman 11326abaa0c9SPierre Ossman BUG_ON(!host); 11336abaa0c9SPierre Ossman BUG_ON(!host->card); 11346abaa0c9SPierre Ossman 11356abaa0c9SPierre Ossman mmc_claim_host(host); 11366abaa0c9SPierre Ossman 11376abaa0c9SPierre Ossman /* 11386abaa0c9SPierre Ossman * Just check if our card has been removed. 11396abaa0c9SPierre Ossman */ 1140d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 11416abaa0c9SPierre Ossman 11427ea239d9SPierre Ossman mmc_release_host(host); 11437ea239d9SPierre Ossman 114417b0429dSPierre Ossman if (err) { 11454101c16aSPierre Ossman mmc_remove(host); 11466abaa0c9SPierre Ossman 11476abaa0c9SPierre Ossman mmc_claim_host(host); 11486abaa0c9SPierre Ossman mmc_detach_bus(host); 11497f7e4129SUlf Hansson mmc_power_off(host); 11506abaa0c9SPierre Ossman mmc_release_host(host); 11516abaa0c9SPierre Ossman } 11526abaa0c9SPierre Ossman } 11536abaa0c9SPierre Ossman 11546abaa0c9SPierre Ossman /* 11556abaa0c9SPierre Ossman * Suspend callback from host. 11566abaa0c9SPierre Ossman */ 115795cdfb72SNicolas Pitre static int mmc_suspend(struct mmc_host *host) 11586abaa0c9SPierre Ossman { 1159c3805467SBalaji T K int err = 0; 1160c3805467SBalaji T K 11616abaa0c9SPierre Ossman BUG_ON(!host); 11626abaa0c9SPierre Ossman BUG_ON(!host->card); 11636abaa0c9SPierre Ossman 11646abaa0c9SPierre Ossman mmc_claim_host(host); 1165c3805467SBalaji T K if (mmc_card_can_sleep(host)) 1166c3805467SBalaji T K err = mmc_card_sleep(host); 1167c3805467SBalaji T K else if (!mmc_host_is_spi(host)) 11686abaa0c9SPierre Ossman mmc_deselect_cards(host); 11696abaa0c9SPierre Ossman host->card->state &= ~MMC_STATE_HIGHSPEED; 11706abaa0c9SPierre Ossman mmc_release_host(host); 117195cdfb72SNicolas Pitre 1172c3805467SBalaji T K return err; 11736abaa0c9SPierre Ossman } 11746abaa0c9SPierre Ossman 11756abaa0c9SPierre Ossman /* 11766abaa0c9SPierre Ossman * Resume callback from host. 11776abaa0c9SPierre Ossman * 11786abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 11796abaa0c9SPierre Ossman * and, if so, restore all state to it. 11806abaa0c9SPierre Ossman */ 118195cdfb72SNicolas Pitre static int mmc_resume(struct mmc_host *host) 11826abaa0c9SPierre Ossman { 11836abaa0c9SPierre Ossman int err; 11846abaa0c9SPierre Ossman 11856abaa0c9SPierre Ossman BUG_ON(!host); 11866abaa0c9SPierre Ossman BUG_ON(!host->card); 11876abaa0c9SPierre Ossman 11886abaa0c9SPierre Ossman mmc_claim_host(host); 11898c75deaeSPierre Ossman err = mmc_init_card(host, host->ocr, host->card); 11902986d0bfSPierre Ossman mmc_release_host(host); 11912986d0bfSPierre Ossman 119295cdfb72SNicolas Pitre return err; 11936abaa0c9SPierre Ossman } 11946abaa0c9SPierre Ossman 119512ae637fSOhad Ben-Cohen static int mmc_power_restore(struct mmc_host *host) 1196eae1aeeeSAdrian Hunter { 119712ae637fSOhad Ben-Cohen int ret; 119812ae637fSOhad Ben-Cohen 1199eae1aeeeSAdrian Hunter host->card->state &= ~MMC_STATE_HIGHSPEED; 1200eae1aeeeSAdrian Hunter mmc_claim_host(host); 120112ae637fSOhad Ben-Cohen ret = mmc_init_card(host, host->ocr, host->card); 1202eae1aeeeSAdrian Hunter mmc_release_host(host); 120312ae637fSOhad Ben-Cohen 120412ae637fSOhad Ben-Cohen return ret; 1205eae1aeeeSAdrian Hunter } 1206eae1aeeeSAdrian Hunter 1207b1ebe384SJarkko Lavinen static int mmc_sleep(struct mmc_host *host) 1208b1ebe384SJarkko Lavinen { 1209b1ebe384SJarkko Lavinen struct mmc_card *card = host->card; 1210b1ebe384SJarkko Lavinen int err = -ENOSYS; 1211b1ebe384SJarkko Lavinen 1212b1ebe384SJarkko Lavinen if (card && card->ext_csd.rev >= 3) { 1213b1ebe384SJarkko Lavinen err = mmc_card_sleepawake(host, 1); 1214b1ebe384SJarkko Lavinen if (err < 0) 1215b1ebe384SJarkko Lavinen pr_debug("%s: Error %d while putting card into sleep", 1216b1ebe384SJarkko Lavinen mmc_hostname(host), err); 1217b1ebe384SJarkko Lavinen } 1218b1ebe384SJarkko Lavinen 1219b1ebe384SJarkko Lavinen return err; 1220b1ebe384SJarkko Lavinen } 1221b1ebe384SJarkko Lavinen 1222b1ebe384SJarkko Lavinen static int mmc_awake(struct mmc_host *host) 1223b1ebe384SJarkko Lavinen { 1224b1ebe384SJarkko Lavinen struct mmc_card *card = host->card; 1225b1ebe384SJarkko Lavinen int err = -ENOSYS; 1226b1ebe384SJarkko Lavinen 1227b1ebe384SJarkko Lavinen if (card && card->ext_csd.rev >= 3) { 1228b1ebe384SJarkko Lavinen err = mmc_card_sleepawake(host, 0); 1229b1ebe384SJarkko Lavinen if (err < 0) 1230b1ebe384SJarkko Lavinen pr_debug("%s: Error %d while awaking sleeping card", 1231b1ebe384SJarkko Lavinen mmc_hostname(host), err); 1232b1ebe384SJarkko Lavinen } 1233b1ebe384SJarkko Lavinen 1234b1ebe384SJarkko Lavinen return err; 1235b1ebe384SJarkko Lavinen } 1236b1ebe384SJarkko Lavinen 12379feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 1238b1ebe384SJarkko Lavinen .awake = mmc_awake, 1239b1ebe384SJarkko Lavinen .sleep = mmc_sleep, 12409feae246SAdrian Hunter .remove = mmc_remove, 12419feae246SAdrian Hunter .detect = mmc_detect, 12429feae246SAdrian Hunter .suspend = NULL, 12439feae246SAdrian Hunter .resume = NULL, 1244eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1245d3049504SAdrian Hunter .alive = mmc_alive, 12469feae246SAdrian Hunter }; 12479feae246SAdrian Hunter 12489feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops_unsafe = { 1249b1ebe384SJarkko Lavinen .awake = mmc_awake, 1250b1ebe384SJarkko Lavinen .sleep = mmc_sleep, 12519feae246SAdrian Hunter .remove = mmc_remove, 12529feae246SAdrian Hunter .detect = mmc_detect, 12539feae246SAdrian Hunter .suspend = mmc_suspend, 12549feae246SAdrian Hunter .resume = mmc_resume, 1255eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1256d3049504SAdrian Hunter .alive = mmc_alive, 12579feae246SAdrian Hunter }; 12589feae246SAdrian Hunter 12599feae246SAdrian Hunter static void mmc_attach_bus_ops(struct mmc_host *host) 12609feae246SAdrian Hunter { 12619feae246SAdrian Hunter const struct mmc_bus_ops *bus_ops; 12629feae246SAdrian Hunter 126371d7d3d1SMatt Fleming if (!mmc_card_is_removable(host)) 12649feae246SAdrian Hunter bus_ops = &mmc_ops_unsafe; 12659feae246SAdrian Hunter else 12669feae246SAdrian Hunter bus_ops = &mmc_ops; 12679feae246SAdrian Hunter mmc_attach_bus(host, bus_ops); 12689feae246SAdrian Hunter } 12699feae246SAdrian Hunter 12706abaa0c9SPierre Ossman /* 12716abaa0c9SPierre Ossman * Starting point for MMC card init. 12726abaa0c9SPierre Ossman */ 1273807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 12746abaa0c9SPierre Ossman { 12756abaa0c9SPierre Ossman int err; 1276807e8e40SAndy Ross u32 ocr; 12776abaa0c9SPierre Ossman 12786abaa0c9SPierre Ossman BUG_ON(!host); 1279d84075c8SPierre Ossman WARN_ON(!host->claimed); 12806abaa0c9SPierre Ossman 128144669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 128244669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 128344669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 128444669034SStefan Nilsson XK 1285807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 1286807e8e40SAndy Ross if (err) 1287807e8e40SAndy Ross return err; 1288807e8e40SAndy Ross 12899feae246SAdrian Hunter mmc_attach_bus_ops(host); 12908f230f45STakashi Iwai if (host->ocr_avail_mmc) 12918f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 12926abaa0c9SPierre Ossman 12936abaa0c9SPierre Ossman /* 1294af517150SDavid Brownell * We need to get OCR a different way for SPI. 1295af517150SDavid Brownell */ 1296af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1297af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 1298af517150SDavid Brownell if (err) 1299af517150SDavid Brownell goto err; 1300af517150SDavid Brownell } 1301af517150SDavid Brownell 1302af517150SDavid Brownell /* 13036abaa0c9SPierre Ossman * Sanity check the voltages that the card claims to 13046abaa0c9SPierre Ossman * support. 13056abaa0c9SPierre Ossman */ 13066abaa0c9SPierre Ossman if (ocr & 0x7F) { 1307a3c76eb9SGirish K S pr_warning("%s: card claims to support voltages " 13086abaa0c9SPierre Ossman "below the defined range. These will be ignored.\n", 13096abaa0c9SPierre Ossman mmc_hostname(host)); 13106abaa0c9SPierre Ossman ocr &= ~0x7F; 13116abaa0c9SPierre Ossman } 13126abaa0c9SPierre Ossman 13136abaa0c9SPierre Ossman host->ocr = mmc_select_voltage(host, ocr); 13146abaa0c9SPierre Ossman 13156abaa0c9SPierre Ossman /* 13166abaa0c9SPierre Ossman * Can we support the voltage of the card? 13176abaa0c9SPierre Ossman */ 1318109b5bedSPierre Ossman if (!host->ocr) { 1319109b5bedSPierre Ossman err = -EINVAL; 13206abaa0c9SPierre Ossman goto err; 1321109b5bedSPierre Ossman } 13226abaa0c9SPierre Ossman 13236abaa0c9SPierre Ossman /* 13246abaa0c9SPierre Ossman * Detect and init the card. 13256abaa0c9SPierre Ossman */ 13268c75deaeSPierre Ossman err = mmc_init_card(host, host->ocr, NULL); 132717b0429dSPierre Ossman if (err) 13286abaa0c9SPierre Ossman goto err; 13296abaa0c9SPierre Ossman 13306abaa0c9SPierre Ossman mmc_release_host(host); 13314101c16aSPierre Ossman err = mmc_add_card(host->card); 1332807e8e40SAndy Ross mmc_claim_host(host); 13337ea239d9SPierre Ossman if (err) 13342986d0bfSPierre Ossman goto remove_card; 13357ea239d9SPierre Ossman 13367ea239d9SPierre Ossman return 0; 13377ea239d9SPierre Ossman 13382986d0bfSPierre Ossman remove_card: 1339807e8e40SAndy Ross mmc_release_host(host); 13406abaa0c9SPierre Ossman mmc_remove_card(host->card); 13412986d0bfSPierre Ossman mmc_claim_host(host); 1342807e8e40SAndy Ross host->card = NULL; 13437ea239d9SPierre Ossman err: 13447ea239d9SPierre Ossman mmc_detach_bus(host); 13457ea239d9SPierre Ossman 1346a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 1347109b5bedSPierre Ossman mmc_hostname(host), err); 1348109b5bedSPierre Ossman 1349adf66a0dSPierre Ossman return err; 13507ea239d9SPierre Ossman } 1351