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> 160cb403a2SUlf Hansson #include <linux/pm_runtime.h> 177ea239d9SPierre Ossman 187ea239d9SPierre Ossman #include <linux/mmc/host.h> 197ea239d9SPierre Ossman #include <linux/mmc/card.h> 207ea239d9SPierre Ossman #include <linux/mmc/mmc.h> 217ea239d9SPierre Ossman 227ea239d9SPierre Ossman #include "core.h" 234101c16aSPierre Ossman #include "bus.h" 247ea239d9SPierre Ossman #include "mmc_ops.h" 254c4cb171SPhilip Rakity #include "sd_ops.h" 267ea239d9SPierre Ossman 277ea239d9SPierre Ossman static const unsigned int tran_exp[] = { 287ea239d9SPierre Ossman 10000, 100000, 1000000, 10000000, 297ea239d9SPierre Ossman 0, 0, 0, 0 307ea239d9SPierre Ossman }; 317ea239d9SPierre Ossman 327ea239d9SPierre Ossman static const unsigned char tran_mant[] = { 337ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 347ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 357ea239d9SPierre Ossman }; 367ea239d9SPierre Ossman 377ea239d9SPierre Ossman static const unsigned int tacc_exp[] = { 387ea239d9SPierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 397ea239d9SPierre Ossman }; 407ea239d9SPierre Ossman 417ea239d9SPierre Ossman static const unsigned int tacc_mant[] = { 427ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 437ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 447ea239d9SPierre Ossman }; 457ea239d9SPierre Ossman 467ea239d9SPierre Ossman #define UNSTUFF_BITS(resp,start,size) \ 477ea239d9SPierre Ossman ({ \ 487ea239d9SPierre Ossman const int __size = size; \ 497ea239d9SPierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 507ea239d9SPierre Ossman const int __off = 3 - ((start) / 32); \ 517ea239d9SPierre Ossman const int __shft = (start) & 31; \ 527ea239d9SPierre Ossman u32 __res; \ 537ea239d9SPierre Ossman \ 547ea239d9SPierre Ossman __res = resp[__off] >> __shft; \ 557ea239d9SPierre Ossman if (__size + __shft > 32) \ 567ea239d9SPierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 577ea239d9SPierre Ossman __res & __mask; \ 587ea239d9SPierre Ossman }) 597ea239d9SPierre Ossman 607ea239d9SPierre Ossman /* 617ea239d9SPierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 627ea239d9SPierre Ossman */ 63bd766312SPierre Ossman static int mmc_decode_cid(struct mmc_card *card) 647ea239d9SPierre Ossman { 657ea239d9SPierre Ossman u32 *resp = card->raw_cid; 667ea239d9SPierre Ossman 677ea239d9SPierre Ossman /* 687ea239d9SPierre Ossman * The selection of the format here is based upon published 697ea239d9SPierre Ossman * specs from sandisk and from what people have reported. 707ea239d9SPierre Ossman */ 717ea239d9SPierre Ossman switch (card->csd.mmca_vsn) { 727ea239d9SPierre Ossman case 0: /* MMC v1.0 - v1.2 */ 737ea239d9SPierre Ossman case 1: /* MMC v1.4 */ 747ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); 757ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 767ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 777ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 787ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 797ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 807ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 817ea239d9SPierre Ossman card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); 827ea239d9SPierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); 837ea239d9SPierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); 847ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 24); 857ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 867ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 877ea239d9SPierre Ossman break; 887ea239d9SPierre Ossman 897ea239d9SPierre Ossman case 2: /* MMC v2.0 - v2.2 */ 907ea239d9SPierre Ossman case 3: /* MMC v3.1 - v3.3 */ 917ea239d9SPierre Ossman case 4: /* MMC v4 */ 927ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 937ea239d9SPierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 947ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 957ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 967ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 977ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 987ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 997ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 10051e7e8b6SBernie Thompson card->cid.prv = UNSTUFF_BITS(resp, 48, 8); 1017ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 32); 1027ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1037ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1047ea239d9SPierre Ossman break; 1057ea239d9SPierre Ossman 1067ea239d9SPierre Ossman default: 107a3c76eb9SGirish K S pr_err("%s: card has unknown MMCA version %d\n", 1087ea239d9SPierre Ossman mmc_hostname(card->host), card->csd.mmca_vsn); 109bd766312SPierre Ossman return -EINVAL; 1107ea239d9SPierre Ossman } 111bd766312SPierre Ossman 112bd766312SPierre Ossman return 0; 1137ea239d9SPierre Ossman } 1147ea239d9SPierre Ossman 115dfe86cbaSAdrian Hunter static void mmc_set_erase_size(struct mmc_card *card) 116dfe86cbaSAdrian Hunter { 117dfe86cbaSAdrian Hunter if (card->ext_csd.erase_group_def & 1) 118dfe86cbaSAdrian Hunter card->erase_size = card->ext_csd.hc_erase_size; 119dfe86cbaSAdrian Hunter else 120dfe86cbaSAdrian Hunter card->erase_size = card->csd.erase_size; 121dfe86cbaSAdrian Hunter 122dfe86cbaSAdrian Hunter mmc_init_erase(card); 123dfe86cbaSAdrian Hunter } 124dfe86cbaSAdrian Hunter 1257ea239d9SPierre Ossman /* 1267ea239d9SPierre Ossman * Given a 128-bit response, decode to our card CSD structure. 1277ea239d9SPierre Ossman */ 128bd766312SPierre Ossman static int mmc_decode_csd(struct mmc_card *card) 1297ea239d9SPierre Ossman { 1307ea239d9SPierre Ossman struct mmc_csd *csd = &card->csd; 131dfe86cbaSAdrian Hunter unsigned int e, m, a, b; 1327ea239d9SPierre Ossman u32 *resp = card->raw_csd; 1337ea239d9SPierre Ossman 1347ea239d9SPierre Ossman /* 1357ea239d9SPierre Ossman * We only understand CSD structure v1.1 and v1.2. 1367ea239d9SPierre Ossman * v1.2 has extra information in bits 15, 11 and 10. 1376da24b78SKyungmin Park * We also support eMMC v4.4 & v4.41. 1387ea239d9SPierre Ossman */ 1396da24b78SKyungmin Park csd->structure = UNSTUFF_BITS(resp, 126, 2); 1406da24b78SKyungmin Park if (csd->structure == 0) { 141a3c76eb9SGirish K S pr_err("%s: unrecognised CSD structure version %d\n", 1426da24b78SKyungmin Park mmc_hostname(card->host), csd->structure); 143bd766312SPierre Ossman return -EINVAL; 1447ea239d9SPierre Ossman } 1457ea239d9SPierre Ossman 1467ea239d9SPierre Ossman csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); 1477ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1487ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1497ea239d9SPierre Ossman csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; 1507ea239d9SPierre Ossman csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1517ea239d9SPierre Ossman 1527ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1537ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1547ea239d9SPierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1557ea239d9SPierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1567ea239d9SPierre Ossman 1577ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1587ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1597ea239d9SPierre Ossman csd->capacity = (1 + m) << (e + 2); 1607ea239d9SPierre Ossman 1617ea239d9SPierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1627ea239d9SPierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1637ea239d9SPierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1647ea239d9SPierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1657ea239d9SPierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1667ea239d9SPierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1677ea239d9SPierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 168bd766312SPierre Ossman 169dfe86cbaSAdrian Hunter if (csd->write_blkbits >= 9) { 170dfe86cbaSAdrian Hunter a = UNSTUFF_BITS(resp, 42, 5); 171dfe86cbaSAdrian Hunter b = UNSTUFF_BITS(resp, 37, 5); 172dfe86cbaSAdrian Hunter csd->erase_size = (a + 1) * (b + 1); 173dfe86cbaSAdrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 174dfe86cbaSAdrian Hunter } 175dfe86cbaSAdrian Hunter 176bd766312SPierre Ossman return 0; 1777ea239d9SPierre Ossman } 1787ea239d9SPierre Ossman 1797ea239d9SPierre Ossman /* 18008ee80ccSPhilip Rakity * Read extended CSD. 1817ea239d9SPierre Ossman */ 18208ee80ccSPhilip Rakity static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) 1837ea239d9SPierre Ossman { 1847ea239d9SPierre Ossman int err; 1857ea239d9SPierre Ossman u8 *ext_csd; 1867ea239d9SPierre Ossman 1877ea239d9SPierre Ossman BUG_ON(!card); 18808ee80ccSPhilip Rakity BUG_ON(!new_ext_csd); 18908ee80ccSPhilip Rakity 19008ee80ccSPhilip Rakity *new_ext_csd = NULL; 1917ea239d9SPierre Ossman 1927ea239d9SPierre Ossman if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 19317b0429dSPierre Ossman return 0; 1947ea239d9SPierre Ossman 1957ea239d9SPierre Ossman /* 1967ea239d9SPierre Ossman * As the ext_csd is so large and mostly unused, we don't store the 1977ea239d9SPierre Ossman * raw block in mmc_card. 1987ea239d9SPierre Ossman */ 1997ea239d9SPierre Ossman ext_csd = kmalloc(512, GFP_KERNEL); 2007ea239d9SPierre Ossman if (!ext_csd) { 201a3c76eb9SGirish K S pr_err("%s: could not allocate a buffer to " 202adf66a0dSPierre Ossman "receive the ext_csd.\n", mmc_hostname(card->host)); 20317b0429dSPierre Ossman return -ENOMEM; 2047ea239d9SPierre Ossman } 2057ea239d9SPierre Ossman 2067ea239d9SPierre Ossman err = mmc_send_ext_csd(card, ext_csd); 20717b0429dSPierre Ossman if (err) { 20808ee80ccSPhilip Rakity kfree(ext_csd); 20908ee80ccSPhilip Rakity *new_ext_csd = NULL; 21008ee80ccSPhilip Rakity 211d08ebeddSWolfgang Muees /* If the host or the card can't do the switch, 212d08ebeddSWolfgang Muees * fail more gracefully. */ 213d08ebeddSWolfgang Muees if ((err != -EINVAL) 214d08ebeddSWolfgang Muees && (err != -ENOSYS) 215d08ebeddSWolfgang Muees && (err != -EFAULT)) 21608ee80ccSPhilip Rakity return err; 217adf66a0dSPierre Ossman 218adf66a0dSPierre Ossman /* 2197ea239d9SPierre Ossman * High capacity cards should have this "magic" size 2207ea239d9SPierre Ossman * stored in their CSD. 2217ea239d9SPierre Ossman */ 2227ea239d9SPierre Ossman if (card->csd.capacity == (4096 * 512)) { 223a3c76eb9SGirish K S pr_err("%s: unable to read EXT_CSD " 2247ea239d9SPierre Ossman "on a possible high capacity card. " 2257ea239d9SPierre Ossman "Card will be ignored.\n", 2267ea239d9SPierre Ossman mmc_hostname(card->host)); 2277ea239d9SPierre Ossman } else { 228a3c76eb9SGirish K S pr_warning("%s: unable to read " 2297ea239d9SPierre Ossman "EXT_CSD, performance might " 2307ea239d9SPierre Ossman "suffer.\n", 2317ea239d9SPierre Ossman mmc_hostname(card->host)); 23217b0429dSPierre Ossman err = 0; 2337ea239d9SPierre Ossman } 23408ee80ccSPhilip Rakity } else 23508ee80ccSPhilip Rakity *new_ext_csd = ext_csd; 236adf66a0dSPierre Ossman 23708ee80ccSPhilip Rakity return err; 2387ea239d9SPierre Ossman } 2397ea239d9SPierre Ossman 24096cf5f02SSeungwon Jeon static void mmc_select_card_type(struct mmc_card *card) 24196cf5f02SSeungwon Jeon { 24296cf5f02SSeungwon Jeon struct mmc_host *host = card->host; 2430a5b6438SSeungwon Jeon u8 card_type = card->ext_csd.raw_card_type; 2445f1a4dd0SLee Jones u32 caps = host->caps, caps2 = host->caps2; 245577fb131SSeungwon Jeon unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; 2462415c0efSSeungwon Jeon unsigned int avail_type = 0; 24796cf5f02SSeungwon Jeon 24896cf5f02SSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 2492415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_26) { 2502415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_26_MAX_DTR; 2512415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_26; 2522415c0efSSeungwon Jeon } 2532415c0efSSeungwon Jeon 2542415c0efSSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 2552415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_52) { 25696cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_52_MAX_DTR; 2572415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_52; 2582415c0efSSeungwon Jeon } 25996cf5f02SSeungwon Jeon 2602415c0efSSeungwon Jeon if (caps & MMC_CAP_1_8V_DDR && 2612415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { 26296cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2632415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; 2642415c0efSSeungwon Jeon } 26596cf5f02SSeungwon Jeon 2662415c0efSSeungwon Jeon if (caps & MMC_CAP_1_2V_DDR && 2672415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 2682415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2692415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; 2702415c0efSSeungwon Jeon } 2712415c0efSSeungwon Jeon 2722415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_8V_SDR && 2732415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { 274577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2752415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; 2762415c0efSSeungwon Jeon } 2772415c0efSSeungwon Jeon 2782415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_2V_SDR && 2792415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { 280577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2812415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; 2822415c0efSSeungwon Jeon } 28396cf5f02SSeungwon Jeon 2840a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_8V && 2850a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { 2860a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2870a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; 2880a5b6438SSeungwon Jeon } 2890a5b6438SSeungwon Jeon 2900a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_2V && 2910a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { 2920a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2930a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; 2940a5b6438SSeungwon Jeon } 2950a5b6438SSeungwon Jeon 29696cf5f02SSeungwon Jeon card->ext_csd.hs_max_dtr = hs_max_dtr; 297577fb131SSeungwon Jeon card->ext_csd.hs200_max_dtr = hs200_max_dtr; 2982415c0efSSeungwon Jeon card->mmc_avail_type = avail_type; 29996cf5f02SSeungwon Jeon } 30096cf5f02SSeungwon Jeon 30108ee80ccSPhilip Rakity /* 30208ee80ccSPhilip Rakity * Decode extended CSD. 30308ee80ccSPhilip Rakity */ 30408ee80ccSPhilip Rakity static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) 30508ee80ccSPhilip Rakity { 306e0c368d5SNamjae Jeon int err = 0, idx; 307e0c368d5SNamjae Jeon unsigned int part_size; 308e0c368d5SNamjae Jeon u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; 30908ee80ccSPhilip Rakity 31008ee80ccSPhilip Rakity BUG_ON(!card); 31108ee80ccSPhilip Rakity 31208ee80ccSPhilip Rakity if (!ext_csd) 31308ee80ccSPhilip Rakity return 0; 31408ee80ccSPhilip Rakity 3156da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 316f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 3176da24b78SKyungmin Park if (card->csd.structure == 3) { 318f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 319a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 3208fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 321f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 3226da24b78SKyungmin Park err = -EINVAL; 3236da24b78SKyungmin Park goto out; 3246da24b78SKyungmin Park } 3256da24b78SKyungmin Park } 3266da24b78SKyungmin Park 32703a59437SRomain Izard /* 32803a59437SRomain Izard * The EXT_CSD format is meant to be forward compatible. As long 32903a59437SRomain Izard * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV 33003a59437SRomain Izard * are authorized, see JEDEC JESD84-B50 section B.8. 33103a59437SRomain Izard */ 3326da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 333d7604d76SPierre Ossman 334f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 335f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 336f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 337f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 338b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 3397ea239d9SPierre Ossman card->ext_csd.sectors = 3407ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 3417ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 3427ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 3437ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 344fc8a0985SHanumath Prasad 345fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 346fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 3477ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 348d7604d76SPierre Ossman } 34996cf5f02SSeungwon Jeon 350f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 35196cf5f02SSeungwon Jeon mmc_select_card_type(card); 3527ea239d9SPierre Ossman 353f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 354f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 355f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 356f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 357f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 358b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 359b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 360371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 361371a689fSAndrei Warkentin 362371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 363371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 364b1ebe384SJarkko Lavinen 365b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 366b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 367b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 368b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 369dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 370dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 371dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 372dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 373dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 374dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 375f4c5522bSAndrei Warkentin 376f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 377371a689fSAndrei Warkentin 378371a689fSAndrei Warkentin /* 379371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 380371a689fSAndrei Warkentin * multiples of 128K. 381371a689fSAndrei Warkentin */ 382e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 383e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 384e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 385e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 386e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 387add710eaSJohan Rudholm "boot%d", idx, true, 388add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 389e0c368d5SNamjae Jeon } 390e0c368d5SNamjae Jeon } 391b1ebe384SJarkko Lavinen } 392b1ebe384SJarkko Lavinen 393f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 394dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 395f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 396f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 397f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 398f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 399f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 400f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 401f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 402f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 403836dc2feSPhilip Rakity card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 404dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 405709de99dSChuanxiao Dong /* 406709de99dSChuanxiao Dong * Enhanced area feature support -- check whether the eMMC 407709de99dSChuanxiao Dong * card has the Enhanced area enabled. If so, export enhanced 408709de99dSChuanxiao Dong * area offset and size to user by adding sysfs interface. 409709de99dSChuanxiao Dong */ 410709de99dSChuanxiao Dong if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 411709de99dSChuanxiao Dong (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 412e0c368d5SNamjae Jeon hc_erase_grp_sz = 413709de99dSChuanxiao Dong ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 414e0c368d5SNamjae Jeon hc_wp_grp_sz = 415709de99dSChuanxiao Dong ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 416709de99dSChuanxiao Dong 417709de99dSChuanxiao Dong card->ext_csd.enhanced_area_en = 1; 418709de99dSChuanxiao Dong /* 419709de99dSChuanxiao Dong * calculate the enhanced data area offset, in bytes 420709de99dSChuanxiao Dong */ 421709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = 422709de99dSChuanxiao Dong (ext_csd[139] << 24) + (ext_csd[138] << 16) + 423709de99dSChuanxiao Dong (ext_csd[137] << 8) + ext_csd[136]; 424709de99dSChuanxiao Dong if (mmc_card_blockaddr(card)) 425709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset <<= 9; 426709de99dSChuanxiao Dong /* 427709de99dSChuanxiao Dong * calculate the enhanced data area size, in kilobytes 428709de99dSChuanxiao Dong */ 429709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = 430709de99dSChuanxiao Dong (ext_csd[142] << 16) + (ext_csd[141] << 8) + 431709de99dSChuanxiao Dong ext_csd[140]; 432709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size *= 433709de99dSChuanxiao Dong (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 434709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size <<= 9; 435709de99dSChuanxiao Dong } else { 436709de99dSChuanxiao Dong /* 437709de99dSChuanxiao Dong * If the enhanced area is not enabled, disable these 438709de99dSChuanxiao Dong * device attributes. 439709de99dSChuanxiao Dong */ 440709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 441709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 442709de99dSChuanxiao Dong } 443e0c368d5SNamjae Jeon 444e0c368d5SNamjae Jeon /* 445e0c368d5SNamjae Jeon * General purpose partition feature support -- 446e0c368d5SNamjae Jeon * If ext_csd has the size of general purpose partitions, 447e0c368d5SNamjae Jeon * set size, part_cfg, partition name in mmc_part. 448e0c368d5SNamjae Jeon */ 449e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 450e0c368d5SNamjae Jeon EXT_CSD_PART_SUPPORT_PART_EN) { 451e0c368d5SNamjae Jeon if (card->ext_csd.enhanced_area_en != 1) { 452e0c368d5SNamjae Jeon hc_erase_grp_sz = 453e0c368d5SNamjae Jeon ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 454e0c368d5SNamjae Jeon hc_wp_grp_sz = 455e0c368d5SNamjae Jeon ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 456e0c368d5SNamjae Jeon 457e0c368d5SNamjae Jeon card->ext_csd.enhanced_area_en = 1; 458e0c368d5SNamjae Jeon } 459e0c368d5SNamjae Jeon 460e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 461e0c368d5SNamjae Jeon if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 462e0c368d5SNamjae Jeon !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 463e0c368d5SNamjae Jeon !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 464e0c368d5SNamjae Jeon continue; 465e0c368d5SNamjae Jeon part_size = 466e0c368d5SNamjae Jeon (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 467e0c368d5SNamjae Jeon << 16) + 468e0c368d5SNamjae Jeon (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 469e0c368d5SNamjae Jeon << 8) + 470e0c368d5SNamjae Jeon ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 471e0c368d5SNamjae Jeon part_size *= (size_t)(hc_erase_grp_sz * 472e0c368d5SNamjae Jeon hc_wp_grp_sz); 473e0c368d5SNamjae Jeon mmc_part_add(card, part_size << 19, 474e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 475add710eaSJohan Rudholm "gp%d", idx, false, 476add710eaSJohan Rudholm MMC_BLK_DATA_AREA_GP); 477e0c368d5SNamjae Jeon } 478e0c368d5SNamjae Jeon } 479dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 480dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 481dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 482dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 483dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 484dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 485dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 486dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 487add710eaSJohan Rudholm 488add710eaSJohan Rudholm /* 489add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 490add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 491add710eaSJohan Rudholm * take into account the value of boot_locked below. 492add710eaSJohan Rudholm */ 493add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 494add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 49560443712SFredrik Soderstedt 49660443712SFredrik Soderstedt /* Save power class values */ 49760443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_195 = 49860443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_195]; 49960443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_195 = 50060443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_195]; 50160443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_360 = 50260443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_360]; 50360443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_360 = 50460443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_360]; 50560443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_195 = 50660443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_195]; 50760443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_360 = 50860443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_360]; 50960443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_195 = 51060443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; 51160443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_360 = 51260443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; 5130a5b6438SSeungwon Jeon card->ext_csd.raw_pwr_cl_ddr_200_360 = 5140a5b6438SSeungwon Jeon ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; 515dfe86cbaSAdrian Hunter } 516dfe86cbaSAdrian Hunter 517b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 5187c4f10acSRomain Izard /* Adjust production date as per JEDEC JESD84-B451 */ 5197c4f10acSRomain Izard if (card->cid.year < 2010) 5207c4f10acSRomain Izard card->cid.year += 16; 5217c4f10acSRomain Izard 522950d56acSJaehoon Chung /* check whether the eMMC card supports BKOPS */ 523950d56acSJaehoon Chung if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { 524950d56acSJaehoon Chung card->ext_csd.bkops = 1; 525950d56acSJaehoon Chung card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN]; 526950d56acSJaehoon Chung card->ext_csd.raw_bkops_status = 527950d56acSJaehoon Chung ext_csd[EXT_CSD_BKOPS_STATUS]; 528950d56acSJaehoon Chung if (!card->ext_csd.bkops_en) 529950d56acSJaehoon Chung pr_info("%s: BKOPS_EN bit is not set\n", 530950d56acSJaehoon Chung mmc_hostname(card->host)); 531950d56acSJaehoon Chung } 532950d56acSJaehoon Chung 533eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 534eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { 535eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 536eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 537eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 538eb0d8f13SJaehoon Chung else 539eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 540eb0d8f13SJaehoon Chung /* 541eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 542eb0d8f13SJaehoon Chung * a command interrupted by HPI 543eb0d8f13SJaehoon Chung */ 544eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 545eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 546eb0d8f13SJaehoon Chung } 547eb0d8f13SJaehoon Chung 548f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 549b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 550090d25feSLoic Pallardy 551090d25feSLoic Pallardy /* 552090d25feSLoic Pallardy * RPMB regions are defined in multiples of 128K. 553090d25feSLoic Pallardy */ 554090d25feSLoic Pallardy card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; 555d0123ccaSBalaji T K if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { 556090d25feSLoic Pallardy mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, 557090d25feSLoic Pallardy EXT_CSD_PART_CONFIG_ACC_RPMB, 558090d25feSLoic Pallardy "rpmb", 0, false, 559090d25feSLoic Pallardy MMC_BLK_DATA_AREA_RPMB); 560090d25feSLoic Pallardy } 561b2499518SAdrian Hunter } 562f4c5522bSAndrei Warkentin 5635238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 564dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 565dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 566dfe86cbaSAdrian Hunter else 567dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 568dfe86cbaSAdrian Hunter 569336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 570bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 571336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 572336c716aSSeungwon Jeon 573b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 574b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 575bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 576bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 577b23cf0bdSSeungwon Jeon 578881d1c25SSeungwon Jeon card->ext_csd.cache_size = 579881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 580881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 581881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 582881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 5834265900eSSaugata Das 5844265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 5854265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 5864265900eSSaugata Das else 5874265900eSSaugata Das card->ext_csd.data_sector_size = 512; 5884265900eSSaugata Das 5894265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 5904265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 5914265900eSSaugata Das card->ext_csd.data_tag_unit_size = 5924265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 5934265900eSSaugata Das (card->ext_csd.data_sector_size); 5944265900eSSaugata Das } else { 5954265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 5964265900eSSaugata Das } 597abd9ac14SSeungwon Jeon 598abd9ac14SSeungwon Jeon card->ext_csd.max_packed_writes = 599abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_WRITES]; 600abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads = 601abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_READS]; 602a5075eb9SSaugata Das } else { 603a5075eb9SSaugata Das card->ext_csd.data_sector_size = 512; 604336c716aSSeungwon Jeon } 605881d1c25SSeungwon Jeon 6067ea239d9SPierre Ossman out: 60708ee80ccSPhilip Rakity return err; 60808ee80ccSPhilip Rakity } 6097ea239d9SPierre Ossman 61008ee80ccSPhilip Rakity static inline void mmc_free_ext_csd(u8 *ext_csd) 61108ee80ccSPhilip Rakity { 61208ee80ccSPhilip Rakity kfree(ext_csd); 61308ee80ccSPhilip Rakity } 61408ee80ccSPhilip Rakity 61508ee80ccSPhilip Rakity 616f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 61708ee80ccSPhilip Rakity { 61808ee80ccSPhilip Rakity u8 *bw_ext_csd; 61908ee80ccSPhilip Rakity int err; 62008ee80ccSPhilip Rakity 621f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 622f39b2dd9SPhilip Rakity return 0; 62308ee80ccSPhilip Rakity 624f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 625f39b2dd9SPhilip Rakity 626f39b2dd9SPhilip Rakity if (err || bw_ext_csd == NULL) { 62708ee80ccSPhilip Rakity err = -EINVAL; 62808ee80ccSPhilip Rakity goto out; 62908ee80ccSPhilip Rakity } 63008ee80ccSPhilip Rakity 63108ee80ccSPhilip Rakity /* only compare read only fields */ 632dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 63308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 634f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 63508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 636f39b2dd9SPhilip Rakity (card->ext_csd.rev == 63708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 638f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 63908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 640f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 64108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 642f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 64308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 644f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 64508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 646f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 64708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 648f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 64908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 650f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 65108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 652f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 65308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 654f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 65508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 656f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 65708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 658f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 659f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 660f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 661f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 662f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 663f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 664f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 66560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && 66660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_195 == 66760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && 66860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_195 == 66960443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && 67060443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_360 == 67160443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && 67260443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_360 == 67360443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && 67460443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_195 == 67560443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && 67660443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_360 == 67760443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && 67860443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_195 == 67960443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && 68060443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_360 == 6810a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && 6820a5b6438SSeungwon Jeon (card->ext_csd.raw_pwr_cl_ddr_200_360 == 6830a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); 6840a5b6438SSeungwon Jeon 68508ee80ccSPhilip Rakity if (err) 68608ee80ccSPhilip Rakity err = -EINVAL; 68708ee80ccSPhilip Rakity 68808ee80ccSPhilip Rakity out: 68908ee80ccSPhilip Rakity mmc_free_ext_csd(bw_ext_csd); 6907ea239d9SPierre Ossman return err; 6917ea239d9SPierre Ossman } 6927ea239d9SPierre Ossman 69351ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 69451ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 69551ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 69651ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 69751ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 698dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 699dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 70051ec92e2SPierre Ossman MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); 70151ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 70251ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 70351ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 70451ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 70551e7e8b6SBernie Thompson MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); 70651ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 707709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 708709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 709709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 710188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 711188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 71251ec92e2SPierre Ossman 71351ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 71451ec92e2SPierre Ossman &dev_attr_cid.attr, 71551ec92e2SPierre Ossman &dev_attr_csd.attr, 71651ec92e2SPierre Ossman &dev_attr_date.attr, 717dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 718dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 71951ec92e2SPierre Ossman &dev_attr_fwrev.attr, 72051ec92e2SPierre Ossman &dev_attr_hwrev.attr, 72151ec92e2SPierre Ossman &dev_attr_manfid.attr, 72251ec92e2SPierre Ossman &dev_attr_name.attr, 72351ec92e2SPierre Ossman &dev_attr_oemid.attr, 72451e7e8b6SBernie Thompson &dev_attr_prv.attr, 72551ec92e2SPierre Ossman &dev_attr_serial.attr, 726709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 727709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 728188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 729188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 73051ec92e2SPierre Ossman NULL, 73151ec92e2SPierre Ossman }; 732d1e58212SAxel Lin ATTRIBUTE_GROUPS(mmc_std); 73351ec92e2SPierre Ossman 73451ec92e2SPierre Ossman static struct device_type mmc_type = { 735d1e58212SAxel Lin .groups = mmc_std_groups, 73651ec92e2SPierre Ossman }; 73751ec92e2SPierre Ossman 7387ea239d9SPierre Ossman /* 739b87d8dbfSGirish K S * Select the PowerClass for the current bus width 740b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 741b87d8dbfSGirish K S * extended CSD register, select it by executing the 742b87d8dbfSGirish K S * mmc_switch command. 743b87d8dbfSGirish K S */ 7442385049dSSeungwon Jeon static int __mmc_select_powerclass(struct mmc_card *card, 74560443712SFredrik Soderstedt unsigned int bus_width) 746b87d8dbfSGirish K S { 7472385049dSSeungwon Jeon struct mmc_host *host = card->host; 7482385049dSSeungwon Jeon struct mmc_ext_csd *ext_csd = &card->ext_csd; 74960443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 7502385049dSSeungwon Jeon int err = 0; 751b87d8dbfSGirish K S 752b87d8dbfSGirish K S /* Power class selection is supported for versions >= 4.0 */ 753b87d8dbfSGirish K S if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 754b87d8dbfSGirish K S return 0; 755b87d8dbfSGirish K S 756b87d8dbfSGirish K S /* Power class values are defined only for 4/8 bit bus */ 757b87d8dbfSGirish K S if (bus_width == EXT_CSD_BUS_WIDTH_1) 758b87d8dbfSGirish K S return 0; 759b87d8dbfSGirish K S 760b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 761b87d8dbfSGirish K S case MMC_VDD_165_195: 7622385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 7632385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_195; 7642385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 76560443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 7662385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_195 : 7672385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_195; 7682385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 7692385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_200_195; 770b87d8dbfSGirish K S break; 77193fc5a47SSubhash Jadavani case MMC_VDD_27_28: 77293fc5a47SSubhash Jadavani case MMC_VDD_28_29: 77393fc5a47SSubhash Jadavani case MMC_VDD_29_30: 77493fc5a47SSubhash Jadavani case MMC_VDD_30_31: 77593fc5a47SSubhash Jadavani case MMC_VDD_31_32: 776b87d8dbfSGirish K S case MMC_VDD_32_33: 777b87d8dbfSGirish K S case MMC_VDD_33_34: 778b87d8dbfSGirish K S case MMC_VDD_34_35: 779b87d8dbfSGirish K S case MMC_VDD_35_36: 7802385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 7812385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_360; 7822385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 78360443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 7842385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_360 : 7852385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_360; 7862385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 7870a5b6438SSeungwon Jeon pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? 7880a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_ddr_200_360 : 7890a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_200_360; 790b87d8dbfSGirish K S break; 791b87d8dbfSGirish K S default: 792b87d8dbfSGirish K S pr_warning("%s: Voltage range not supported " 793b87d8dbfSGirish K S "for power class.\n", mmc_hostname(host)); 794b87d8dbfSGirish K S return -EINVAL; 795b87d8dbfSGirish K S } 796b87d8dbfSGirish K S 797b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 798b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 799b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 800b87d8dbfSGirish K S else 801b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 802b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 803b87d8dbfSGirish K S 804b87d8dbfSGirish K S /* If the power class is different from the default value */ 805b87d8dbfSGirish K S if (pwrclass_val > 0) { 806b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 807b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 808b87d8dbfSGirish K S pwrclass_val, 80971fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 810b87d8dbfSGirish K S } 811b87d8dbfSGirish K S 812b87d8dbfSGirish K S return err; 813b87d8dbfSGirish K S } 814b87d8dbfSGirish K S 8152385049dSSeungwon Jeon static int mmc_select_powerclass(struct mmc_card *card) 8162385049dSSeungwon Jeon { 8172385049dSSeungwon Jeon struct mmc_host *host = card->host; 8182385049dSSeungwon Jeon u32 bus_width, ext_csd_bits; 8192385049dSSeungwon Jeon int err, ddr; 8202385049dSSeungwon Jeon 8212385049dSSeungwon Jeon /* Power class selection is supported for versions >= 4.0 */ 8222385049dSSeungwon Jeon if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 8232385049dSSeungwon Jeon return 0; 8242385049dSSeungwon Jeon 8252385049dSSeungwon Jeon bus_width = host->ios.bus_width; 8262385049dSSeungwon Jeon /* Power class values are defined only for 4/8 bit bus */ 8272385049dSSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 8282385049dSSeungwon Jeon return 0; 8292385049dSSeungwon Jeon 8302385049dSSeungwon Jeon ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; 8312385049dSSeungwon Jeon if (ddr) 8322385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 8332385049dSSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 8342385049dSSeungwon Jeon else 8352385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 8362385049dSSeungwon Jeon EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 8372385049dSSeungwon Jeon 8382385049dSSeungwon Jeon err = __mmc_select_powerclass(card, ext_csd_bits); 8392385049dSSeungwon Jeon if (err) 8402385049dSSeungwon Jeon pr_warn("%s: power class selection to bus width %d ddr %d failed\n", 8412385049dSSeungwon Jeon mmc_hostname(host), 1 << bus_width, ddr); 8422385049dSSeungwon Jeon 8432385049dSSeungwon Jeon return err; 8442385049dSSeungwon Jeon } 8452385049dSSeungwon Jeon 846b87d8dbfSGirish K S /* 847577fb131SSeungwon Jeon * Set the bus speed for the selected speed mode. 848a4924c71SGirish K S */ 849577fb131SSeungwon Jeon static void mmc_set_bus_speed(struct mmc_card *card) 850a4924c71SGirish K S { 851577fb131SSeungwon Jeon unsigned int max_dtr = (unsigned int)-1; 852577fb131SSeungwon Jeon 8530a5b6438SSeungwon Jeon if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && 8540a5b6438SSeungwon Jeon max_dtr > card->ext_csd.hs200_max_dtr) 855577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs200_max_dtr; 856577fb131SSeungwon Jeon else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) 857577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs_max_dtr; 858577fb131SSeungwon Jeon else if (max_dtr > card->csd.max_dtr) 859577fb131SSeungwon Jeon max_dtr = card->csd.max_dtr; 860577fb131SSeungwon Jeon 861577fb131SSeungwon Jeon mmc_set_clock(card->host, max_dtr); 862577fb131SSeungwon Jeon } 863577fb131SSeungwon Jeon 864577fb131SSeungwon Jeon /* 865577fb131SSeungwon Jeon * Select the bus width amoung 4-bit and 8-bit(SDR). 866577fb131SSeungwon Jeon * If the bus width is changed successfully, return the selected width value. 867577fb131SSeungwon Jeon * Zero is returned instead of error value if the wide width is not supported. 868577fb131SSeungwon Jeon */ 869577fb131SSeungwon Jeon static int mmc_select_bus_width(struct mmc_card *card) 870577fb131SSeungwon Jeon { 871a4924c71SGirish K S static unsigned ext_csd_bits[] = { 872a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 873577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH_4, 874a4924c71SGirish K S }; 875a4924c71SGirish K S static unsigned bus_widths[] = { 876a4924c71SGirish K S MMC_BUS_WIDTH_8, 877577fb131SSeungwon Jeon MMC_BUS_WIDTH_4, 878a4924c71SGirish K S }; 879577fb131SSeungwon Jeon struct mmc_host *host = card->host; 880577fb131SSeungwon Jeon unsigned idx, bus_width = 0; 881577fb131SSeungwon Jeon int err = 0; 882a4924c71SGirish K S 883577fb131SSeungwon Jeon if ((card->csd.mmca_vsn < CSD_SPEC_VER_4) && 884577fb131SSeungwon Jeon !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) 885577fb131SSeungwon Jeon return 0; 886a4924c71SGirish K S 887577fb131SSeungwon Jeon idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; 888a4924c71SGirish K S 889a4924c71SGirish K S /* 890a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 891a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 892a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 893a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 894a4924c71SGirish K S */ 895577fb131SSeungwon Jeon for (; idx < ARRAY_SIZE(bus_widths); idx++) { 896a4924c71SGirish K S /* 897a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 898a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 899a4924c71SGirish K S * mmc switch command returns error then switch to 900a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 901a4924c71SGirish K S * bus width on the host. 902a4924c71SGirish K S */ 903a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 904a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 905a4924c71SGirish K S ext_csd_bits[idx], 906a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 907a4924c71SGirish K S if (err) 908a4924c71SGirish K S continue; 909a4924c71SGirish K S 910577fb131SSeungwon Jeon bus_width = bus_widths[idx]; 911577fb131SSeungwon Jeon mmc_set_bus_width(host, bus_width); 912a4924c71SGirish K S 913577fb131SSeungwon Jeon /* 914577fb131SSeungwon Jeon * If controller can't handle bus width test, 915577fb131SSeungwon Jeon * compare ext_csd previously read in 1 bit mode 916577fb131SSeungwon Jeon * against ext_csd at new bus width 917577fb131SSeungwon Jeon */ 918a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 919577fb131SSeungwon Jeon err = mmc_compare_ext_csds(card, bus_width); 920a4924c71SGirish K S else 921577fb131SSeungwon Jeon err = mmc_bus_test(card, bus_width); 922577fb131SSeungwon Jeon 923577fb131SSeungwon Jeon if (!err) { 924577fb131SSeungwon Jeon err = bus_width; 925a4924c71SGirish K S break; 926577fb131SSeungwon Jeon } else { 927577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d failed\n", 928577fb131SSeungwon Jeon mmc_hostname(host), ext_csd_bits[idx]); 929577fb131SSeungwon Jeon } 930a4924c71SGirish K S } 931a4924c71SGirish K S 932577fb131SSeungwon Jeon return err; 933577fb131SSeungwon Jeon } 934577fb131SSeungwon Jeon 935577fb131SSeungwon Jeon /* 936577fb131SSeungwon Jeon * Switch to the high-speed mode 937577fb131SSeungwon Jeon */ 938577fb131SSeungwon Jeon static int mmc_select_hs(struct mmc_card *card) 939577fb131SSeungwon Jeon { 940577fb131SSeungwon Jeon int err; 941577fb131SSeungwon Jeon 9424509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 943577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 94457de31f6SUlf Hansson card->ext_csd.generic_cmd6_time, 94557de31f6SUlf Hansson true, true, true); 946577fb131SSeungwon Jeon if (!err) 947577fb131SSeungwon Jeon mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 948577fb131SSeungwon Jeon 949577fb131SSeungwon Jeon return err; 950577fb131SSeungwon Jeon } 951577fb131SSeungwon Jeon 952577fb131SSeungwon Jeon /* 953577fb131SSeungwon Jeon * Activate wide bus and DDR if supported. 954577fb131SSeungwon Jeon */ 955577fb131SSeungwon Jeon static int mmc_select_hs_ddr(struct mmc_card *card) 956577fb131SSeungwon Jeon { 957577fb131SSeungwon Jeon struct mmc_host *host = card->host; 958577fb131SSeungwon Jeon u32 bus_width, ext_csd_bits; 959577fb131SSeungwon Jeon int err = 0; 960577fb131SSeungwon Jeon 961577fb131SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) 962577fb131SSeungwon Jeon return 0; 963577fb131SSeungwon Jeon 964577fb131SSeungwon Jeon bus_width = host->ios.bus_width; 965577fb131SSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 966577fb131SSeungwon Jeon return 0; 967577fb131SSeungwon Jeon 968577fb131SSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 969577fb131SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 970577fb131SSeungwon Jeon 971577fb131SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 972577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH, 973577fb131SSeungwon Jeon ext_csd_bits, 974577fb131SSeungwon Jeon card->ext_csd.generic_cmd6_time); 975577fb131SSeungwon Jeon if (err) { 976577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d ddr failed\n", 977577fb131SSeungwon Jeon mmc_hostname(host), 1 << bus_width); 978577fb131SSeungwon Jeon return err; 979577fb131SSeungwon Jeon } 980577fb131SSeungwon Jeon 981577fb131SSeungwon Jeon /* 982577fb131SSeungwon Jeon * eMMC cards can support 3.3V to 1.2V i/o (vccq) 983577fb131SSeungwon Jeon * signaling. 984577fb131SSeungwon Jeon * 985577fb131SSeungwon Jeon * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 986577fb131SSeungwon Jeon * 987577fb131SSeungwon Jeon * 1.8V vccq at 3.3V core voltage (vcc) is not required 988577fb131SSeungwon Jeon * in the JEDEC spec for DDR. 989577fb131SSeungwon Jeon * 990577fb131SSeungwon Jeon * Do not force change in vccq since we are obviously 991577fb131SSeungwon Jeon * working and no change to vccq is needed. 992577fb131SSeungwon Jeon * 993577fb131SSeungwon Jeon * WARNING: eMMC rules are NOT the same as SD DDR 994577fb131SSeungwon Jeon */ 995577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 996577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, 997577fb131SSeungwon Jeon MMC_SIGNAL_VOLTAGE_120); 998577fb131SSeungwon Jeon if (err) 999577fb131SSeungwon Jeon return err; 1000577fb131SSeungwon Jeon } 1001577fb131SSeungwon Jeon 1002577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_DDR52); 1003577fb131SSeungwon Jeon 1004577fb131SSeungwon Jeon return err; 1005577fb131SSeungwon Jeon } 1006577fb131SSeungwon Jeon 10070a5b6438SSeungwon Jeon static int mmc_select_hs400(struct mmc_card *card) 10080a5b6438SSeungwon Jeon { 10090a5b6438SSeungwon Jeon struct mmc_host *host = card->host; 10100a5b6438SSeungwon Jeon int err = 0; 10110a5b6438SSeungwon Jeon 10120a5b6438SSeungwon Jeon /* 10130a5b6438SSeungwon Jeon * HS400 mode requires 8-bit bus width 10140a5b6438SSeungwon Jeon */ 10150a5b6438SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 10160a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8)) 10170a5b6438SSeungwon Jeon return 0; 10180a5b6438SSeungwon Jeon 10190a5b6438SSeungwon Jeon /* 10200a5b6438SSeungwon Jeon * Before switching to dual data rate operation for HS400, 10210a5b6438SSeungwon Jeon * it is required to convert from HS200 mode to HS mode. 10220a5b6438SSeungwon Jeon */ 10230a5b6438SSeungwon Jeon mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 10240a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 10250a5b6438SSeungwon Jeon 10260a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10270a5b6438SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 10280a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time, 10290a5b6438SSeungwon Jeon true, true, true); 10300a5b6438SSeungwon Jeon if (err) { 10310a5b6438SSeungwon Jeon pr_warn("%s: switch to high-speed from hs200 failed, err:%d\n", 10320a5b6438SSeungwon Jeon mmc_hostname(host), err); 10330a5b6438SSeungwon Jeon return err; 10340a5b6438SSeungwon Jeon } 10350a5b6438SSeungwon Jeon 10360a5b6438SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10370a5b6438SSeungwon Jeon EXT_CSD_BUS_WIDTH, 10380a5b6438SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8, 10390a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time); 10400a5b6438SSeungwon Jeon if (err) { 10410a5b6438SSeungwon Jeon pr_warn("%s: switch to bus width for hs400 failed, err:%d\n", 10420a5b6438SSeungwon Jeon mmc_hostname(host), err); 10430a5b6438SSeungwon Jeon return err; 10440a5b6438SSeungwon Jeon } 10450a5b6438SSeungwon Jeon 10460a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10470a5b6438SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS400, 10480a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time, 10490a5b6438SSeungwon Jeon true, true, true); 10500a5b6438SSeungwon Jeon if (err) { 10510a5b6438SSeungwon Jeon pr_warn("%s: switch to hs400 failed, err:%d\n", 10520a5b6438SSeungwon Jeon mmc_hostname(host), err); 10530a5b6438SSeungwon Jeon return err; 10540a5b6438SSeungwon Jeon } 10550a5b6438SSeungwon Jeon 10560a5b6438SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS400); 10570a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 10580a5b6438SSeungwon Jeon 10590a5b6438SSeungwon Jeon return 0; 10600a5b6438SSeungwon Jeon } 10610a5b6438SSeungwon Jeon 1062577fb131SSeungwon Jeon /* 1063577fb131SSeungwon Jeon * For device supporting HS200 mode, the following sequence 1064577fb131SSeungwon Jeon * should be done before executing the tuning process. 1065577fb131SSeungwon Jeon * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) 1066577fb131SSeungwon Jeon * 2. switch to HS200 mode 1067577fb131SSeungwon Jeon * 3. set the clock to > 52Mhz and <=200MHz 1068577fb131SSeungwon Jeon */ 1069577fb131SSeungwon Jeon static int mmc_select_hs200(struct mmc_card *card) 1070577fb131SSeungwon Jeon { 1071577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1072577fb131SSeungwon Jeon int err = -EINVAL; 1073577fb131SSeungwon Jeon 1074577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) 1075577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1076577fb131SSeungwon Jeon 1077577fb131SSeungwon Jeon if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) 1078577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1079577fb131SSeungwon Jeon 1080577fb131SSeungwon Jeon /* If fails try again during next card power cycle */ 1081577fb131SSeungwon Jeon if (err) 1082577fb131SSeungwon Jeon goto err; 1083577fb131SSeungwon Jeon 1084577fb131SSeungwon Jeon /* 1085577fb131SSeungwon Jeon * Set the bus width(4 or 8) with host's support and 1086577fb131SSeungwon Jeon * switch to HS200 mode if bus width is set successfully. 1087577fb131SSeungwon Jeon */ 1088577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 1089577fb131SSeungwon Jeon if (!IS_ERR_VALUE(err)) { 1090577fb131SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1091577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS200, 1092577fb131SSeungwon Jeon card->ext_csd.generic_cmd6_time, 1093577fb131SSeungwon Jeon true, true, true); 1094577fb131SSeungwon Jeon if (!err) 1095577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS200); 1096577fb131SSeungwon Jeon } 1097a4924c71SGirish K S err: 1098a4924c71SGirish K S return err; 1099a4924c71SGirish K S } 1100a4924c71SGirish K S 1101a4924c71SGirish K S /* 1102577fb131SSeungwon Jeon * Activate High Speed or HS200 mode if supported. 1103577fb131SSeungwon Jeon */ 1104577fb131SSeungwon Jeon static int mmc_select_timing(struct mmc_card *card) 1105577fb131SSeungwon Jeon { 1106577fb131SSeungwon Jeon int err = 0; 1107577fb131SSeungwon Jeon 1108577fb131SSeungwon Jeon if ((card->csd.mmca_vsn < CSD_SPEC_VER_4 && 1109577fb131SSeungwon Jeon card->ext_csd.hs_max_dtr == 0)) 1110577fb131SSeungwon Jeon goto bus_speed; 1111577fb131SSeungwon Jeon 1112577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) 1113577fb131SSeungwon Jeon err = mmc_select_hs200(card); 1114577fb131SSeungwon Jeon else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) 1115577fb131SSeungwon Jeon err = mmc_select_hs(card); 1116577fb131SSeungwon Jeon 1117577fb131SSeungwon Jeon if (err && err != -EBADMSG) 1118577fb131SSeungwon Jeon return err; 1119577fb131SSeungwon Jeon 1120577fb131SSeungwon Jeon if (err) { 1121577fb131SSeungwon Jeon pr_warn("%s: switch to %s failed\n", 1122577fb131SSeungwon Jeon mmc_card_hs(card) ? "high-speed" : 1123577fb131SSeungwon Jeon (mmc_card_hs200(card) ? "hs200" : ""), 1124577fb131SSeungwon Jeon mmc_hostname(card->host)); 1125577fb131SSeungwon Jeon err = 0; 1126577fb131SSeungwon Jeon } 1127577fb131SSeungwon Jeon 1128577fb131SSeungwon Jeon bus_speed: 1129577fb131SSeungwon Jeon /* 1130577fb131SSeungwon Jeon * Set the bus speed to the selected bus timing. 1131577fb131SSeungwon Jeon * If timing is not selected, backward compatible is the default. 1132577fb131SSeungwon Jeon */ 1133577fb131SSeungwon Jeon mmc_set_bus_speed(card); 1134577fb131SSeungwon Jeon return err; 1135577fb131SSeungwon Jeon } 1136577fb131SSeungwon Jeon 1137577fb131SSeungwon Jeon /* 1138577fb131SSeungwon Jeon * Execute tuning sequence to seek the proper bus operating 11390a5b6438SSeungwon Jeon * conditions for HS200 and HS400, which sends CMD21 to the device. 1140577fb131SSeungwon Jeon */ 1141577fb131SSeungwon Jeon static int mmc_hs200_tuning(struct mmc_card *card) 1142577fb131SSeungwon Jeon { 1143577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1144577fb131SSeungwon Jeon int err = 0; 1145577fb131SSeungwon Jeon 11460a5b6438SSeungwon Jeon /* 11470a5b6438SSeungwon Jeon * Timing should be adjusted to the HS400 target 11480a5b6438SSeungwon Jeon * operation frequency for tuning process 11490a5b6438SSeungwon Jeon */ 11500a5b6438SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 11510a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8) 11520a5b6438SSeungwon Jeon if (host->ops->prepare_hs400_tuning) 11530a5b6438SSeungwon Jeon host->ops->prepare_hs400_tuning(host, &host->ios); 11540a5b6438SSeungwon Jeon 1155577fb131SSeungwon Jeon if (host->ops->execute_tuning) { 1156577fb131SSeungwon Jeon mmc_host_clk_hold(host); 1157577fb131SSeungwon Jeon err = host->ops->execute_tuning(host, 1158577fb131SSeungwon Jeon MMC_SEND_TUNING_BLOCK_HS200); 1159577fb131SSeungwon Jeon mmc_host_clk_release(host); 1160577fb131SSeungwon Jeon 1161577fb131SSeungwon Jeon if (err) 1162577fb131SSeungwon Jeon pr_warn("%s: tuning execution failed\n", 1163577fb131SSeungwon Jeon mmc_hostname(host)); 1164577fb131SSeungwon Jeon } 1165577fb131SSeungwon Jeon 1166577fb131SSeungwon Jeon return err; 1167577fb131SSeungwon Jeon } 1168577fb131SSeungwon Jeon 1169577fb131SSeungwon Jeon /* 11706abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 11716abaa0c9SPierre Ossman * 11728769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 11736abaa0c9SPierre Ossman * we're trying to reinitialise. 11747ea239d9SPierre Ossman */ 11758c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 11766abaa0c9SPierre Ossman struct mmc_card *oldcard) 11777ea239d9SPierre Ossman { 11787ea239d9SPierre Ossman struct mmc_card *card; 1179577fb131SSeungwon Jeon int err; 11807ea239d9SPierre Ossman u32 cid[4]; 1181b676f039SPhilip Rakity u32 rocr; 118208ee80ccSPhilip Rakity u8 *ext_csd = NULL; 11837ea239d9SPierre Ossman 11847ea239d9SPierre Ossman BUG_ON(!host); 1185d84075c8SPierre Ossman WARN_ON(!host->claimed); 11867ea239d9SPierre Ossman 118744669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 118844669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 118944669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 119044669034SStefan Nilsson XK 11917ea239d9SPierre Ossman /* 11927ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 11937ea239d9SPierre Ossman * need to tell some cards to go back to the idle 11947ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 11957ea239d9SPierre Ossman * respond. 1196c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 11977ea239d9SPierre Ossman */ 11987ea239d9SPierre Ossman mmc_go_idle(host); 11997ea239d9SPierre Ossman 12007ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 1201b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 120217b0429dSPierre Ossman if (err) 12036abaa0c9SPierre Ossman goto err; 12047ea239d9SPierre Ossman 12057ea239d9SPierre Ossman /* 1206af517150SDavid Brownell * For SPI, enable CRC as appropriate. 1207af517150SDavid Brownell */ 1208af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1209af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 1210af517150SDavid Brownell if (err) 1211af517150SDavid Brownell goto err; 1212af517150SDavid Brownell } 1213af517150SDavid Brownell 1214af517150SDavid Brownell /* 12157ea239d9SPierre Ossman * Fetch CID from card. 12167ea239d9SPierre Ossman */ 1217af517150SDavid Brownell if (mmc_host_is_spi(host)) 1218af517150SDavid Brownell err = mmc_send_cid(host, cid); 1219af517150SDavid Brownell else 12207ea239d9SPierre Ossman err = mmc_all_send_cid(host, cid); 122117b0429dSPierre Ossman if (err) 12227ea239d9SPierre Ossman goto err; 12237ea239d9SPierre Ossman 12246abaa0c9SPierre Ossman if (oldcard) { 1225adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 1226adf66a0dSPierre Ossman err = -ENOENT; 12276abaa0c9SPierre Ossman goto err; 1228adf66a0dSPierre Ossman } 12296abaa0c9SPierre Ossman 12306abaa0c9SPierre Ossman card = oldcard; 12316abaa0c9SPierre Ossman } else { 12327ea239d9SPierre Ossman /* 12337ea239d9SPierre Ossman * Allocate card structure. 12347ea239d9SPierre Ossman */ 123551ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 1236adf66a0dSPierre Ossman if (IS_ERR(card)) { 1237adf66a0dSPierre Ossman err = PTR_ERR(card); 12387ea239d9SPierre Ossman goto err; 1239adf66a0dSPierre Ossman } 12407ea239d9SPierre Ossman 124169041150SUlf Hansson card->ocr = ocr; 12427ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 12437ea239d9SPierre Ossman card->rca = 1; 12447ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 12456abaa0c9SPierre Ossman } 12467ea239d9SPierre Ossman 12477ea239d9SPierre Ossman /* 1248af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 12497ea239d9SPierre Ossman */ 1250af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 12517ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 125217b0429dSPierre Ossman if (err) 12537ea239d9SPierre Ossman goto free_card; 12547ea239d9SPierre Ossman 12557ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 1256af517150SDavid Brownell } 12577ea239d9SPierre Ossman 12586abaa0c9SPierre Ossman if (!oldcard) { 12597ea239d9SPierre Ossman /* 12607ea239d9SPierre Ossman * Fetch CSD from card. 12617ea239d9SPierre Ossman */ 12627ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 126317b0429dSPierre Ossman if (err) 12647ea239d9SPierre Ossman goto free_card; 12657ea239d9SPierre Ossman 1266bd766312SPierre Ossman err = mmc_decode_csd(card); 1267adf66a0dSPierre Ossman if (err) 1268bd766312SPierre Ossman goto free_card; 1269bd766312SPierre Ossman err = mmc_decode_cid(card); 1270adf66a0dSPierre Ossman if (err) 1271bd766312SPierre Ossman goto free_card; 12726abaa0c9SPierre Ossman } 12737ea239d9SPierre Ossman 12747ea239d9SPierre Ossman /* 127589a73cf5SPierre Ossman * Select card, as all following commands rely on that. 12767ea239d9SPierre Ossman */ 1277af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 12787ea239d9SPierre Ossman err = mmc_select_card(card); 127917b0429dSPierre Ossman if (err) 12807ea239d9SPierre Ossman goto free_card; 1281af517150SDavid Brownell } 12827ea239d9SPierre Ossman 12836abaa0c9SPierre Ossman if (!oldcard) { 128489a73cf5SPierre Ossman /* 1285af517150SDavid Brownell * Fetch and process extended CSD. 128689a73cf5SPierre Ossman */ 128708ee80ccSPhilip Rakity 128808ee80ccSPhilip Rakity err = mmc_get_ext_csd(card, &ext_csd); 128908ee80ccSPhilip Rakity if (err) 129008ee80ccSPhilip Rakity goto free_card; 129108ee80ccSPhilip Rakity err = mmc_read_ext_csd(card, ext_csd); 129217b0429dSPierre Ossman if (err) 12937ea239d9SPierre Ossman goto free_card; 1294b676f039SPhilip Rakity 1295b676f039SPhilip Rakity /* If doing byte addressing, check if required to do sector 1296b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 1297b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 1298b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 1299b676f039SPhilip Rakity */ 1300b676f039SPhilip Rakity if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) 1301b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 1302b676f039SPhilip Rakity 1303dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 1304dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 13056abaa0c9SPierre Ossman } 13067ea239d9SPierre Ossman 13077ea239d9SPierre Ossman /* 1308709de99dSChuanxiao Dong * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF 1309709de99dSChuanxiao Dong * bit. This bit will be lost every time after a reset or power off. 1310709de99dSChuanxiao Dong */ 131183bb24aaSAdrian Hunter if (card->ext_csd.enhanced_area_en || 131283bb24aaSAdrian Hunter (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { 1313709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1314b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1315b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1316709de99dSChuanxiao Dong 1317709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1318709de99dSChuanxiao Dong goto free_card; 1319709de99dSChuanxiao Dong 1320709de99dSChuanxiao Dong if (err) { 1321709de99dSChuanxiao Dong err = 0; 1322709de99dSChuanxiao Dong /* 1323709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1324709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1325709de99dSChuanxiao Dong * during next time reinit 1326709de99dSChuanxiao Dong */ 1327709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1328709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1329709de99dSChuanxiao Dong } else { 1330709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1331709de99dSChuanxiao Dong /* 1332709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1333709de99dSChuanxiao Dong * This will affect the erase size, so 1334709de99dSChuanxiao Dong * here need to reset erase size 1335709de99dSChuanxiao Dong */ 1336709de99dSChuanxiao Dong mmc_set_erase_size(card); 1337709de99dSChuanxiao Dong } 1338709de99dSChuanxiao Dong } 1339709de99dSChuanxiao Dong 1340709de99dSChuanxiao Dong /* 134141e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 134241e2a489SPhilip Rakity */ 1343371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1344371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1345371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1346371a689fSAndrei Warkentin card->ext_csd.part_config, 1347371a689fSAndrei Warkentin card->ext_csd.part_time); 1348371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1349371a689fSAndrei Warkentin goto free_card; 135041e2a489SPhilip Rakity } 135141e2a489SPhilip Rakity 135241e2a489SPhilip Rakity /* 135343235679SUlf Hansson * Enable power_off_notification byte in the ext_csd register 1354bec8726aSGirish K S */ 135543235679SUlf Hansson if (card->ext_csd.rev >= 6) { 1356bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1357bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1358bec8726aSGirish K S EXT_CSD_POWER_ON, 1359bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1360bec8726aSGirish K S if (err && err != -EBADMSG) 1361bec8726aSGirish K S goto free_card; 1362bec8726aSGirish K S 136396a85d54SGirish K S /* 136496a85d54SGirish K S * The err can be -EBADMSG or 0, 136596a85d54SGirish K S * so check for success and update the flag 136696a85d54SGirish K S */ 1367bec8726aSGirish K S if (!err) 1368e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 136996a85d54SGirish K S } 1370bec8726aSGirish K S 1371bec8726aSGirish K S /* 1372577fb131SSeungwon Jeon * Select timing interface 137389a73cf5SPierre Ossman */ 1374577fb131SSeungwon Jeon err = mmc_select_timing(card); 1375577fb131SSeungwon Jeon if (err) 137689a73cf5SPierre Ossman goto free_card; 137789a73cf5SPierre Ossman 1378a4924c71SGirish K S if (mmc_card_hs200(card)) { 1379577fb131SSeungwon Jeon err = mmc_hs200_tuning(card); 13804c4cb171SPhilip Rakity if (err) 13814c4cb171SPhilip Rakity goto err; 13820a5b6438SSeungwon Jeon 13830a5b6438SSeungwon Jeon err = mmc_select_hs400(card); 13840a5b6438SSeungwon Jeon if (err) 13850a5b6438SSeungwon Jeon goto err; 1386577fb131SSeungwon Jeon } else if (mmc_card_hs(card)) { 1387577fb131SSeungwon Jeon /* Select the desired bus width optionally */ 1388577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 1389577fb131SSeungwon Jeon if (!IS_ERR_VALUE(err)) { 1390577fb131SSeungwon Jeon err = mmc_select_hs_ddr(card); 1391577fb131SSeungwon Jeon if (err) 1392577fb131SSeungwon Jeon goto err; 139389a73cf5SPierre Ossman } 1394ef0b27d4SAdrian Hunter } 139589a73cf5SPierre Ossman 1396881d1c25SSeungwon Jeon /* 13972385049dSSeungwon Jeon * Choose the power class with selected bus interface 13982385049dSSeungwon Jeon */ 13992385049dSSeungwon Jeon mmc_select_powerclass(card); 14002385049dSSeungwon Jeon 14012385049dSSeungwon Jeon /* 140252d0974eSSubhash Jadavani * Enable HPI feature (if supported) 140352d0974eSSubhash Jadavani */ 140452d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 140552d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 140652d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 140752d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 140852d0974eSSubhash Jadavani if (err && err != -EBADMSG) 140952d0974eSSubhash Jadavani goto free_card; 141052d0974eSSubhash Jadavani if (err) { 141152d0974eSSubhash Jadavani pr_warning("%s: Enabling HPI failed\n", 141252d0974eSSubhash Jadavani mmc_hostname(card->host)); 141352d0974eSSubhash Jadavani err = 0; 141452d0974eSSubhash Jadavani } else 141552d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 141652d0974eSSubhash Jadavani } 141752d0974eSSubhash Jadavani 141852d0974eSSubhash Jadavani /* 1419881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1420881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1421881d1c25SSeungwon Jeon */ 14227536d3f8SUlf Hansson if (card->ext_csd.cache_size > 0) { 1423881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 14248bc0678bSSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 14258bc0678bSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1426881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1427881d1c25SSeungwon Jeon goto free_card; 1428881d1c25SSeungwon Jeon 1429881d1c25SSeungwon Jeon /* 1430881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1431881d1c25SSeungwon Jeon */ 14328bc0678bSSeungwon Jeon if (err) { 14338bc0678bSSeungwon Jeon pr_warning("%s: Cache is supported, " 14348bc0678bSSeungwon Jeon "but failed to turn on (%d)\n", 14358bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 14368bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 14378bc0678bSSeungwon Jeon err = 0; 14388bc0678bSSeungwon Jeon } else { 14398bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 14408bc0678bSSeungwon Jeon } 1441881d1c25SSeungwon Jeon } 1442881d1c25SSeungwon Jeon 1443abd9ac14SSeungwon Jeon /* 1444abd9ac14SSeungwon Jeon * The mandatory minimum values are defined for packed command. 1445abd9ac14SSeungwon Jeon * read: 5, write: 3 1446abd9ac14SSeungwon Jeon */ 1447abd9ac14SSeungwon Jeon if (card->ext_csd.max_packed_writes >= 3 && 1448abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads >= 5 && 1449abd9ac14SSeungwon Jeon host->caps2 & MMC_CAP2_PACKED_CMD) { 1450abd9ac14SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1451abd9ac14SSeungwon Jeon EXT_CSD_EXP_EVENTS_CTRL, 1452abd9ac14SSeungwon Jeon EXT_CSD_PACKED_EVENT_EN, 1453abd9ac14SSeungwon Jeon card->ext_csd.generic_cmd6_time); 1454abd9ac14SSeungwon Jeon if (err && err != -EBADMSG) 1455abd9ac14SSeungwon Jeon goto free_card; 1456abd9ac14SSeungwon Jeon if (err) { 1457abd9ac14SSeungwon Jeon pr_warn("%s: Enabling packed event failed\n", 1458abd9ac14SSeungwon Jeon mmc_hostname(card->host)); 1459abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 0; 1460abd9ac14SSeungwon Jeon err = 0; 1461abd9ac14SSeungwon Jeon } else { 1462abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 1; 1463abd9ac14SSeungwon Jeon } 1464abd9ac14SSeungwon Jeon } 1465abd9ac14SSeungwon Jeon 14666abaa0c9SPierre Ossman if (!oldcard) 14677ea239d9SPierre Ossman host->card = card; 14687ea239d9SPierre Ossman 146908ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 147017b0429dSPierre Ossman return 0; 14716abaa0c9SPierre Ossman 14726abaa0c9SPierre Ossman free_card: 14736abaa0c9SPierre Ossman if (!oldcard) 14746abaa0c9SPierre Ossman mmc_remove_card(card); 14756abaa0c9SPierre Ossman err: 147608ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 14776abaa0c9SPierre Ossman 1478adf66a0dSPierre Ossman return err; 14796abaa0c9SPierre Ossman } 14806abaa0c9SPierre Ossman 148107a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 148207a68216SUlf Hansson { 148307a68216SUlf Hansson return (card && card->ext_csd.rev >= 3); 148407a68216SUlf Hansson } 148507a68216SUlf Hansson 148607a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 148707a68216SUlf Hansson { 148807a68216SUlf Hansson struct mmc_command cmd = {0}; 148907a68216SUlf Hansson struct mmc_card *card = host->card; 1490cb962e04SUlf Hansson unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); 149107a68216SUlf Hansson int err; 149207a68216SUlf Hansson 149307a68216SUlf Hansson err = mmc_deselect_cards(host); 149407a68216SUlf Hansson if (err) 149507a68216SUlf Hansson return err; 149607a68216SUlf Hansson 149707a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 149807a68216SUlf Hansson cmd.arg = card->rca << 16; 149907a68216SUlf Hansson cmd.arg |= 1 << 15; 150007a68216SUlf Hansson 1501cb962e04SUlf Hansson /* 1502cb962e04SUlf Hansson * If the max_busy_timeout of the host is specified, validate it against 1503cb962e04SUlf Hansson * the sleep cmd timeout. A failure means we need to prevent the host 1504cb962e04SUlf Hansson * from doing hw busy detection, which is done by converting to a R1 1505cb962e04SUlf Hansson * response instead of a R1B. 1506cb962e04SUlf Hansson */ 1507cb962e04SUlf Hansson if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { 1508cb962e04SUlf Hansson cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1509cb962e04SUlf Hansson } else { 151007a68216SUlf Hansson cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 1511cb962e04SUlf Hansson cmd.busy_timeout = timeout_ms; 1512cb962e04SUlf Hansson } 1513cb962e04SUlf Hansson 151407a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 151507a68216SUlf Hansson if (err) 151607a68216SUlf Hansson return err; 151707a68216SUlf Hansson 151807a68216SUlf Hansson /* 151907a68216SUlf Hansson * If the host does not wait while the card signals busy, then we will 152007a68216SUlf Hansson * will have to wait the sleep/awake timeout. Note, we cannot use the 152107a68216SUlf Hansson * SEND_STATUS command to poll the status because that command (and most 152207a68216SUlf Hansson * others) is invalid while the card sleeps. 152307a68216SUlf Hansson */ 1524cb962e04SUlf Hansson if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) 1525cb962e04SUlf Hansson mmc_delay(timeout_ms); 152607a68216SUlf Hansson 152707a68216SUlf Hansson return err; 152807a68216SUlf Hansson } 152907a68216SUlf Hansson 1530e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1531e6c08586SUlf Hansson { 1532e6c08586SUlf Hansson return card && 1533e6c08586SUlf Hansson mmc_card_mmc(card) && 1534e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1535e6c08586SUlf Hansson } 1536e6c08586SUlf Hansson 1537e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1538e6c08586SUlf Hansson { 1539e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1540e6c08586SUlf Hansson int err; 1541e6c08586SUlf Hansson 1542e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1543e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1544e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1545e6c08586SUlf Hansson 1546878e200bSUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1547e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 15484509f847SUlf Hansson notify_type, timeout, true, false, false); 1549e6c08586SUlf Hansson if (err) 1550e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1551e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1552e6c08586SUlf Hansson 1553e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 1554e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 1555e6c08586SUlf Hansson 1556e6c08586SUlf Hansson return err; 1557e6c08586SUlf Hansson } 1558e6c08586SUlf Hansson 15596abaa0c9SPierre Ossman /* 15606abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 15616abaa0c9SPierre Ossman */ 15626abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 15636abaa0c9SPierre Ossman { 15646abaa0c9SPierre Ossman BUG_ON(!host); 15656abaa0c9SPierre Ossman BUG_ON(!host->card); 15666abaa0c9SPierre Ossman 15676abaa0c9SPierre Ossman mmc_remove_card(host->card); 15686abaa0c9SPierre Ossman host->card = NULL; 15696abaa0c9SPierre Ossman } 15706abaa0c9SPierre Ossman 15716abaa0c9SPierre Ossman /* 1572d3049504SAdrian Hunter * Card detection - card is alive. 1573d3049504SAdrian Hunter */ 1574d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1575d3049504SAdrian Hunter { 1576d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1577d3049504SAdrian Hunter } 1578d3049504SAdrian Hunter 1579d3049504SAdrian Hunter /* 15806abaa0c9SPierre Ossman * Card detection callback from host. 15816abaa0c9SPierre Ossman */ 15826abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 15836abaa0c9SPierre Ossman { 15846abaa0c9SPierre Ossman int err; 15856abaa0c9SPierre Ossman 15866abaa0c9SPierre Ossman BUG_ON(!host); 15876abaa0c9SPierre Ossman BUG_ON(!host->card); 15886abaa0c9SPierre Ossman 1589e94cfef6SUlf Hansson mmc_get_card(host->card); 15906abaa0c9SPierre Ossman 15916abaa0c9SPierre Ossman /* 15926abaa0c9SPierre Ossman * Just check if our card has been removed. 15936abaa0c9SPierre Ossman */ 1594d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 15956abaa0c9SPierre Ossman 1596e94cfef6SUlf Hansson mmc_put_card(host->card); 15977ea239d9SPierre Ossman 159817b0429dSPierre Ossman if (err) { 15994101c16aSPierre Ossman mmc_remove(host); 16006abaa0c9SPierre Ossman 16016abaa0c9SPierre Ossman mmc_claim_host(host); 16026abaa0c9SPierre Ossman mmc_detach_bus(host); 16037f7e4129SUlf Hansson mmc_power_off(host); 16046abaa0c9SPierre Ossman mmc_release_host(host); 16056abaa0c9SPierre Ossman } 16066abaa0c9SPierre Ossman } 16076abaa0c9SPierre Ossman 160803d071fcSUlf Hansson static int _mmc_suspend(struct mmc_host *host, bool is_suspend) 16096abaa0c9SPierre Ossman { 1610c3805467SBalaji T K int err = 0; 161103d071fcSUlf Hansson unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : 161203d071fcSUlf Hansson EXT_CSD_POWER_OFF_LONG; 1613c3805467SBalaji T K 16146abaa0c9SPierre Ossman BUG_ON(!host); 16156abaa0c9SPierre Ossman BUG_ON(!host->card); 16166abaa0c9SPierre Ossman 16176abaa0c9SPierre Ossman mmc_claim_host(host); 1618881d926dSMaya Erez 16199ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 16209ec775f7SUlf Hansson goto out; 16219ec775f7SUlf Hansson 162239b9431bSUlf Hansson if (mmc_card_doing_bkops(host->card)) { 162339b9431bSUlf Hansson err = mmc_stop_bkops(host->card); 162439b9431bSUlf Hansson if (err) 162539b9431bSUlf Hansson goto out; 162639b9431bSUlf Hansson } 162739b9431bSUlf Hansson 162810e5d965SUlf Hansson err = mmc_flush_cache(host->card); 1629881d926dSMaya Erez if (err) 1630881d926dSMaya Erez goto out; 1631881d926dSMaya Erez 163243235679SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 163353275c21SUlf Hansson ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) 163403d071fcSUlf Hansson err = mmc_poweroff_notify(host->card, notify_type); 163507a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 163607a68216SUlf Hansson err = mmc_sleep(host); 1637e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 163885e727edSJaehoon Chung err = mmc_deselect_cards(host); 163995cdfb72SNicolas Pitre 16409ec775f7SUlf Hansson if (!err) { 164174590263SUlf Hansson mmc_power_off(host); 16429ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 16439ec775f7SUlf Hansson } 1644881d926dSMaya Erez out: 1645881d926dSMaya Erez mmc_release_host(host); 1646c3805467SBalaji T K return err; 16476abaa0c9SPierre Ossman } 16486abaa0c9SPierre Ossman 16496abaa0c9SPierre Ossman /* 16500cb403a2SUlf Hansson * Suspend callback 165103d071fcSUlf Hansson */ 165203d071fcSUlf Hansson static int mmc_suspend(struct mmc_host *host) 165303d071fcSUlf Hansson { 16540cb403a2SUlf Hansson int err; 16550cb403a2SUlf Hansson 16560cb403a2SUlf Hansson err = _mmc_suspend(host, true); 16570cb403a2SUlf Hansson if (!err) { 16580cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 16590cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 16600cb403a2SUlf Hansson } 16610cb403a2SUlf Hansson 16620cb403a2SUlf Hansson return err; 166303d071fcSUlf Hansson } 166403d071fcSUlf Hansson 166503d071fcSUlf Hansson /* 16666abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 16676abaa0c9SPierre Ossman * and, if so, restore all state to it. 16686abaa0c9SPierre Ossman */ 16690cb403a2SUlf Hansson static int _mmc_resume(struct mmc_host *host) 16706abaa0c9SPierre Ossman { 16719ec775f7SUlf Hansson int err = 0; 16726abaa0c9SPierre Ossman 16736abaa0c9SPierre Ossman BUG_ON(!host); 16746abaa0c9SPierre Ossman BUG_ON(!host->card); 16756abaa0c9SPierre Ossman 16766abaa0c9SPierre Ossman mmc_claim_host(host); 16779ec775f7SUlf Hansson 16789ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 16799ec775f7SUlf Hansson goto out; 16809ec775f7SUlf Hansson 168169041150SUlf Hansson mmc_power_up(host, host->card->ocr); 168269041150SUlf Hansson err = mmc_init_card(host, host->card->ocr, host->card); 16839ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 16842986d0bfSPierre Ossman 16859ec775f7SUlf Hansson out: 16869ec775f7SUlf Hansson mmc_release_host(host); 168795cdfb72SNicolas Pitre return err; 16886abaa0c9SPierre Ossman } 16896abaa0c9SPierre Ossman 16909ec775f7SUlf Hansson /* 16919ec775f7SUlf Hansson * Shutdown callback 16929ec775f7SUlf Hansson */ 16939ec775f7SUlf Hansson static int mmc_shutdown(struct mmc_host *host) 16949ec775f7SUlf Hansson { 16959ec775f7SUlf Hansson int err = 0; 16969ec775f7SUlf Hansson 16979ec775f7SUlf Hansson /* 16989ec775f7SUlf Hansson * In a specific case for poweroff notify, we need to resume the card 16999ec775f7SUlf Hansson * before we can shutdown it properly. 17009ec775f7SUlf Hansson */ 17019ec775f7SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 17029ec775f7SUlf Hansson !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) 17030cb403a2SUlf Hansson err = _mmc_resume(host); 17049ec775f7SUlf Hansson 17059ec775f7SUlf Hansson if (!err) 17069ec775f7SUlf Hansson err = _mmc_suspend(host, false); 17079ec775f7SUlf Hansson 17089ec775f7SUlf Hansson return err; 17099ec775f7SUlf Hansson } 1710c4d770d7SUlf Hansson 1711c4d770d7SUlf Hansson /* 17120cb403a2SUlf Hansson * Callback for resume. 17130cb403a2SUlf Hansson */ 17140cb403a2SUlf Hansson static int mmc_resume(struct mmc_host *host) 17150cb403a2SUlf Hansson { 17164d223782SUlf Hansson int err = 0; 17170cb403a2SUlf Hansson 17184d223782SUlf Hansson if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) { 17190cb403a2SUlf Hansson err = _mmc_resume(host); 17200cb403a2SUlf Hansson pm_runtime_set_active(&host->card->dev); 17210cb403a2SUlf Hansson pm_runtime_mark_last_busy(&host->card->dev); 17224d223782SUlf Hansson } 17230cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 17240cb403a2SUlf Hansson 17250cb403a2SUlf Hansson return err; 17260cb403a2SUlf Hansson } 17270cb403a2SUlf Hansson 17280cb403a2SUlf Hansson /* 1729c4d770d7SUlf Hansson * Callback for runtime_suspend. 1730c4d770d7SUlf Hansson */ 1731c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 1732c4d770d7SUlf Hansson { 1733c4d770d7SUlf Hansson int err; 1734c4d770d7SUlf Hansson 1735c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 1736c4d770d7SUlf Hansson return 0; 1737c4d770d7SUlf Hansson 17380cb403a2SUlf Hansson err = _mmc_suspend(host, true); 17390cc81a8cSUlf Hansson if (err) 1740c4d770d7SUlf Hansson pr_err("%s: error %d doing aggessive suspend\n", 1741c4d770d7SUlf Hansson mmc_hostname(host), err); 1742c4d770d7SUlf Hansson 1743c4d770d7SUlf Hansson return err; 1744c4d770d7SUlf Hansson } 1745c4d770d7SUlf Hansson 1746c4d770d7SUlf Hansson /* 1747c4d770d7SUlf Hansson * Callback for runtime_resume. 1748c4d770d7SUlf Hansson */ 1749c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 1750c4d770d7SUlf Hansson { 1751c4d770d7SUlf Hansson int err; 1752c4d770d7SUlf Hansson 17534d223782SUlf Hansson if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME))) 1754c4d770d7SUlf Hansson return 0; 1755c4d770d7SUlf Hansson 17560cb403a2SUlf Hansson err = _mmc_resume(host); 1757c4d770d7SUlf Hansson if (err) 1758c4d770d7SUlf Hansson pr_err("%s: error %d doing aggessive resume\n", 1759c4d770d7SUlf Hansson mmc_hostname(host), err); 1760c4d770d7SUlf Hansson 1761c4d770d7SUlf Hansson return 0; 1762c4d770d7SUlf Hansson } 1763c4d770d7SUlf Hansson 176412ae637fSOhad Ben-Cohen static int mmc_power_restore(struct mmc_host *host) 1765eae1aeeeSAdrian Hunter { 176612ae637fSOhad Ben-Cohen int ret; 176712ae637fSOhad Ben-Cohen 1768eae1aeeeSAdrian Hunter mmc_claim_host(host); 176969041150SUlf Hansson ret = mmc_init_card(host, host->card->ocr, host->card); 1770eae1aeeeSAdrian Hunter mmc_release_host(host); 177112ae637fSOhad Ben-Cohen 177212ae637fSOhad Ben-Cohen return ret; 1773eae1aeeeSAdrian Hunter } 1774eae1aeeeSAdrian Hunter 17759feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 17769feae246SAdrian Hunter .remove = mmc_remove, 17779feae246SAdrian Hunter .detect = mmc_detect, 17789feae246SAdrian Hunter .suspend = mmc_suspend, 17799feae246SAdrian Hunter .resume = mmc_resume, 1780c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 1781c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 1782eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1783d3049504SAdrian Hunter .alive = mmc_alive, 1784486fdbbcSUlf Hansson .shutdown = mmc_shutdown, 17859feae246SAdrian Hunter }; 17869feae246SAdrian Hunter 17876abaa0c9SPierre Ossman /* 17886abaa0c9SPierre Ossman * Starting point for MMC card init. 17896abaa0c9SPierre Ossman */ 1790807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 17916abaa0c9SPierre Ossman { 17926abaa0c9SPierre Ossman int err; 179369041150SUlf Hansson u32 ocr, rocr; 17946abaa0c9SPierre Ossman 17956abaa0c9SPierre Ossman BUG_ON(!host); 1796d84075c8SPierre Ossman WARN_ON(!host->claimed); 17976abaa0c9SPierre Ossman 179844669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 179944669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 180044669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 180144669034SStefan Nilsson XK 1802807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 1803807e8e40SAndy Ross if (err) 1804807e8e40SAndy Ross return err; 1805807e8e40SAndy Ross 18062501c917SUlf Hansson mmc_attach_bus(host, &mmc_ops); 18078f230f45STakashi Iwai if (host->ocr_avail_mmc) 18088f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 18096abaa0c9SPierre Ossman 18106abaa0c9SPierre Ossman /* 1811af517150SDavid Brownell * We need to get OCR a different way for SPI. 1812af517150SDavid Brownell */ 1813af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1814af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 1815af517150SDavid Brownell if (err) 1816af517150SDavid Brownell goto err; 1817af517150SDavid Brownell } 1818af517150SDavid Brownell 181969041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 18206abaa0c9SPierre Ossman 18216abaa0c9SPierre Ossman /* 18226abaa0c9SPierre Ossman * Can we support the voltage of the card? 18236abaa0c9SPierre Ossman */ 182469041150SUlf Hansson if (!rocr) { 1825109b5bedSPierre Ossman err = -EINVAL; 18266abaa0c9SPierre Ossman goto err; 1827109b5bedSPierre Ossman } 18286abaa0c9SPierre Ossman 18296abaa0c9SPierre Ossman /* 18306abaa0c9SPierre Ossman * Detect and init the card. 18316abaa0c9SPierre Ossman */ 183269041150SUlf Hansson err = mmc_init_card(host, rocr, NULL); 183317b0429dSPierre Ossman if (err) 18346abaa0c9SPierre Ossman goto err; 18356abaa0c9SPierre Ossman 18366abaa0c9SPierre Ossman mmc_release_host(host); 18374101c16aSPierre Ossman err = mmc_add_card(host->card); 1838807e8e40SAndy Ross mmc_claim_host(host); 18397ea239d9SPierre Ossman if (err) 18402986d0bfSPierre Ossman goto remove_card; 18417ea239d9SPierre Ossman 18427ea239d9SPierre Ossman return 0; 18437ea239d9SPierre Ossman 18442986d0bfSPierre Ossman remove_card: 1845807e8e40SAndy Ross mmc_release_host(host); 18466abaa0c9SPierre Ossman mmc_remove_card(host->card); 18472986d0bfSPierre Ossman mmc_claim_host(host); 1848807e8e40SAndy Ross host->card = NULL; 18497ea239d9SPierre Ossman err: 18507ea239d9SPierre Ossman mmc_detach_bus(host); 18517ea239d9SPierre Ossman 1852a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 1853109b5bedSPierre Ossman mmc_hostname(host), err); 1854109b5bedSPierre Ossman 1855adf66a0dSPierre Ossman return err; 18567ea239d9SPierre Ossman } 1857