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); 1653d705d14SSascha Hauer csd->dsr_imp = UNSTUFF_BITS(resp, 76, 1); 1667ea239d9SPierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1677ea239d9SPierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1687ea239d9SPierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 169bd766312SPierre Ossman 170dfe86cbaSAdrian Hunter if (csd->write_blkbits >= 9) { 171dfe86cbaSAdrian Hunter a = UNSTUFF_BITS(resp, 42, 5); 172dfe86cbaSAdrian Hunter b = UNSTUFF_BITS(resp, 37, 5); 173dfe86cbaSAdrian Hunter csd->erase_size = (a + 1) * (b + 1); 174dfe86cbaSAdrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 175dfe86cbaSAdrian Hunter } 176dfe86cbaSAdrian Hunter 177bd766312SPierre Ossman return 0; 1787ea239d9SPierre Ossman } 1797ea239d9SPierre Ossman 1807ea239d9SPierre Ossman /* 18108ee80ccSPhilip Rakity * Read extended CSD. 1827ea239d9SPierre Ossman */ 18308ee80ccSPhilip Rakity static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) 1847ea239d9SPierre Ossman { 1857ea239d9SPierre Ossman int err; 1867ea239d9SPierre Ossman u8 *ext_csd; 1877ea239d9SPierre Ossman 1887ea239d9SPierre Ossman BUG_ON(!card); 18908ee80ccSPhilip Rakity BUG_ON(!new_ext_csd); 19008ee80ccSPhilip Rakity 19108ee80ccSPhilip Rakity *new_ext_csd = NULL; 1927ea239d9SPierre Ossman 1937ea239d9SPierre Ossman if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 19417b0429dSPierre Ossman return 0; 1957ea239d9SPierre Ossman 1967ea239d9SPierre Ossman /* 1977ea239d9SPierre Ossman * As the ext_csd is so large and mostly unused, we don't store the 1987ea239d9SPierre Ossman * raw block in mmc_card. 1997ea239d9SPierre Ossman */ 2007ea239d9SPierre Ossman ext_csd = kmalloc(512, GFP_KERNEL); 2017ea239d9SPierre Ossman if (!ext_csd) { 202a3c76eb9SGirish K S pr_err("%s: could not allocate a buffer to " 203adf66a0dSPierre Ossman "receive the ext_csd.\n", mmc_hostname(card->host)); 20417b0429dSPierre Ossman return -ENOMEM; 2057ea239d9SPierre Ossman } 2067ea239d9SPierre Ossman 2077ea239d9SPierre Ossman err = mmc_send_ext_csd(card, ext_csd); 20817b0429dSPierre Ossman if (err) { 20908ee80ccSPhilip Rakity kfree(ext_csd); 21008ee80ccSPhilip Rakity *new_ext_csd = NULL; 21108ee80ccSPhilip Rakity 212d08ebeddSWolfgang Muees /* If the host or the card can't do the switch, 213d08ebeddSWolfgang Muees * fail more gracefully. */ 214d08ebeddSWolfgang Muees if ((err != -EINVAL) 215d08ebeddSWolfgang Muees && (err != -ENOSYS) 216d08ebeddSWolfgang Muees && (err != -EFAULT)) 21708ee80ccSPhilip Rakity return err; 218adf66a0dSPierre Ossman 219adf66a0dSPierre Ossman /* 2207ea239d9SPierre Ossman * High capacity cards should have this "magic" size 2217ea239d9SPierre Ossman * stored in their CSD. 2227ea239d9SPierre Ossman */ 2237ea239d9SPierre Ossman if (card->csd.capacity == (4096 * 512)) { 224a3c76eb9SGirish K S pr_err("%s: unable to read EXT_CSD " 2257ea239d9SPierre Ossman "on a possible high capacity card. " 2267ea239d9SPierre Ossman "Card will be ignored.\n", 2277ea239d9SPierre Ossman mmc_hostname(card->host)); 2287ea239d9SPierre Ossman } else { 229a3c76eb9SGirish K S pr_warning("%s: unable to read " 2307ea239d9SPierre Ossman "EXT_CSD, performance might " 2317ea239d9SPierre Ossman "suffer.\n", 2327ea239d9SPierre Ossman mmc_hostname(card->host)); 23317b0429dSPierre Ossman err = 0; 2347ea239d9SPierre Ossman } 23508ee80ccSPhilip Rakity } else 23608ee80ccSPhilip Rakity *new_ext_csd = ext_csd; 237adf66a0dSPierre Ossman 23808ee80ccSPhilip Rakity return err; 2397ea239d9SPierre Ossman } 2407ea239d9SPierre Ossman 24196cf5f02SSeungwon Jeon static void mmc_select_card_type(struct mmc_card *card) 24296cf5f02SSeungwon Jeon { 24396cf5f02SSeungwon Jeon struct mmc_host *host = card->host; 2440a5b6438SSeungwon Jeon u8 card_type = card->ext_csd.raw_card_type; 2455f1a4dd0SLee Jones u32 caps = host->caps, caps2 = host->caps2; 246577fb131SSeungwon Jeon unsigned int hs_max_dtr = 0, hs200_max_dtr = 0; 2472415c0efSSeungwon Jeon unsigned int avail_type = 0; 24896cf5f02SSeungwon Jeon 24996cf5f02SSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 2502415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_26) { 2512415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_26_MAX_DTR; 2522415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_26; 2532415c0efSSeungwon Jeon } 2542415c0efSSeungwon Jeon 2552415c0efSSeungwon Jeon if (caps & MMC_CAP_MMC_HIGHSPEED && 2562415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS_52) { 25796cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_52_MAX_DTR; 2582415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS_52; 2592415c0efSSeungwon Jeon } 26096cf5f02SSeungwon Jeon 2612415c0efSSeungwon Jeon if (caps & MMC_CAP_1_8V_DDR && 2622415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) { 26396cf5f02SSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2642415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_8V; 2652415c0efSSeungwon Jeon } 26696cf5f02SSeungwon Jeon 2672415c0efSSeungwon Jeon if (caps & MMC_CAP_1_2V_DDR && 2682415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 2692415c0efSSeungwon Jeon hs_max_dtr = MMC_HIGH_DDR_MAX_DTR; 2702415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_DDR_1_2V; 2712415c0efSSeungwon Jeon } 2722415c0efSSeungwon Jeon 2732415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_8V_SDR && 2742415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_8V) { 275577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2762415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_8V; 2772415c0efSSeungwon Jeon } 2782415c0efSSeungwon Jeon 2792415c0efSSeungwon Jeon if (caps2 & MMC_CAP2_HS200_1_2V_SDR && 2802415c0efSSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS200_1_2V) { 281577fb131SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2822415c0efSSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS200_1_2V; 2832415c0efSSeungwon Jeon } 28496cf5f02SSeungwon Jeon 2850a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_8V && 2860a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_8V) { 2870a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2880a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_8V; 2890a5b6438SSeungwon Jeon } 2900a5b6438SSeungwon Jeon 2910a5b6438SSeungwon Jeon if (caps2 & MMC_CAP2_HS400_1_2V && 2920a5b6438SSeungwon Jeon card_type & EXT_CSD_CARD_TYPE_HS400_1_2V) { 2930a5b6438SSeungwon Jeon hs200_max_dtr = MMC_HS200_MAX_DTR; 2940a5b6438SSeungwon Jeon avail_type |= EXT_CSD_CARD_TYPE_HS400_1_2V; 2950a5b6438SSeungwon Jeon } 2960a5b6438SSeungwon Jeon 29796cf5f02SSeungwon Jeon card->ext_csd.hs_max_dtr = hs_max_dtr; 298577fb131SSeungwon Jeon card->ext_csd.hs200_max_dtr = hs200_max_dtr; 2992415c0efSSeungwon Jeon card->mmc_avail_type = avail_type; 30096cf5f02SSeungwon Jeon } 30196cf5f02SSeungwon Jeon 30208ee80ccSPhilip Rakity /* 30308ee80ccSPhilip Rakity * Decode extended CSD. 30408ee80ccSPhilip Rakity */ 30508ee80ccSPhilip Rakity static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) 30608ee80ccSPhilip Rakity { 307e0c368d5SNamjae Jeon int err = 0, idx; 308e0c368d5SNamjae Jeon unsigned int part_size; 309e0c368d5SNamjae Jeon u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; 31008ee80ccSPhilip Rakity 31108ee80ccSPhilip Rakity BUG_ON(!card); 31208ee80ccSPhilip Rakity 31308ee80ccSPhilip Rakity if (!ext_csd) 31408ee80ccSPhilip Rakity return 0; 31508ee80ccSPhilip Rakity 3166da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 317f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 3186da24b78SKyungmin Park if (card->csd.structure == 3) { 319f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 320a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 3218fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 322f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 3236da24b78SKyungmin Park err = -EINVAL; 3246da24b78SKyungmin Park goto out; 3256da24b78SKyungmin Park } 3266da24b78SKyungmin Park } 3276da24b78SKyungmin Park 32803a59437SRomain Izard /* 32903a59437SRomain Izard * The EXT_CSD format is meant to be forward compatible. As long 33003a59437SRomain Izard * as CSD_STRUCTURE does not change, all values for EXT_CSD_REV 33103a59437SRomain Izard * are authorized, see JEDEC JESD84-B50 section B.8. 33203a59437SRomain Izard */ 3336da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 334d7604d76SPierre Ossman 335f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 336f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 337f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 338f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 339b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 3407ea239d9SPierre Ossman card->ext_csd.sectors = 3417ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 3427ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 3437ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 3447ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 345fc8a0985SHanumath Prasad 346fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 347fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 3487ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 349d7604d76SPierre Ossman } 35096cf5f02SSeungwon Jeon 351f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 35296cf5f02SSeungwon Jeon mmc_select_card_type(card); 3537ea239d9SPierre Ossman 354f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 355f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 356f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 357f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 358f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 359b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 360b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 361371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 362371a689fSAndrei Warkentin 363371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 364371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 365b1ebe384SJarkko Lavinen 366b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 367b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 368b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 369b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 370dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 371dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 372dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 373dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 374dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 375dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 376f4c5522bSAndrei Warkentin 377f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 378371a689fSAndrei Warkentin 379371a689fSAndrei Warkentin /* 380371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 381371a689fSAndrei Warkentin * multiples of 128K. 382371a689fSAndrei Warkentin */ 383e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 384e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 385e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 386e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 387e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 388add710eaSJohan Rudholm "boot%d", idx, true, 389add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 390e0c368d5SNamjae Jeon } 391e0c368d5SNamjae Jeon } 392b1ebe384SJarkko Lavinen } 393b1ebe384SJarkko Lavinen 394f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 395dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 396f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 397f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 398f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 399f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 400f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 401f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 402f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 403f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 404836dc2feSPhilip Rakity card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 405dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 406709de99dSChuanxiao Dong /* 407709de99dSChuanxiao Dong * Enhanced area feature support -- check whether the eMMC 408709de99dSChuanxiao Dong * card has the Enhanced area enabled. If so, export enhanced 409709de99dSChuanxiao Dong * area offset and size to user by adding sysfs interface. 410709de99dSChuanxiao Dong */ 411709de99dSChuanxiao Dong if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 412709de99dSChuanxiao Dong (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 413e0c368d5SNamjae Jeon hc_erase_grp_sz = 414709de99dSChuanxiao Dong ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 415e0c368d5SNamjae Jeon hc_wp_grp_sz = 416709de99dSChuanxiao Dong ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 417709de99dSChuanxiao Dong 418709de99dSChuanxiao Dong card->ext_csd.enhanced_area_en = 1; 419709de99dSChuanxiao Dong /* 420709de99dSChuanxiao Dong * calculate the enhanced data area offset, in bytes 421709de99dSChuanxiao Dong */ 422709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = 423709de99dSChuanxiao Dong (ext_csd[139] << 24) + (ext_csd[138] << 16) + 424709de99dSChuanxiao Dong (ext_csd[137] << 8) + ext_csd[136]; 425709de99dSChuanxiao Dong if (mmc_card_blockaddr(card)) 426709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset <<= 9; 427709de99dSChuanxiao Dong /* 428709de99dSChuanxiao Dong * calculate the enhanced data area size, in kilobytes 429709de99dSChuanxiao Dong */ 430709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = 431709de99dSChuanxiao Dong (ext_csd[142] << 16) + (ext_csd[141] << 8) + 432709de99dSChuanxiao Dong ext_csd[140]; 433709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size *= 434709de99dSChuanxiao Dong (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 435709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size <<= 9; 436709de99dSChuanxiao Dong } else { 437709de99dSChuanxiao Dong /* 438709de99dSChuanxiao Dong * If the enhanced area is not enabled, disable these 439709de99dSChuanxiao Dong * device attributes. 440709de99dSChuanxiao Dong */ 441709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 442709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 443709de99dSChuanxiao Dong } 444e0c368d5SNamjae Jeon 445e0c368d5SNamjae Jeon /* 446e0c368d5SNamjae Jeon * General purpose partition feature support -- 447e0c368d5SNamjae Jeon * If ext_csd has the size of general purpose partitions, 448e0c368d5SNamjae Jeon * set size, part_cfg, partition name in mmc_part. 449e0c368d5SNamjae Jeon */ 450e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 451e0c368d5SNamjae Jeon EXT_CSD_PART_SUPPORT_PART_EN) { 452e0c368d5SNamjae Jeon if (card->ext_csd.enhanced_area_en != 1) { 453e0c368d5SNamjae Jeon hc_erase_grp_sz = 454e0c368d5SNamjae Jeon ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 455e0c368d5SNamjae Jeon hc_wp_grp_sz = 456e0c368d5SNamjae Jeon ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 457e0c368d5SNamjae Jeon 458e0c368d5SNamjae Jeon card->ext_csd.enhanced_area_en = 1; 459e0c368d5SNamjae Jeon } 460e0c368d5SNamjae Jeon 461e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 462e0c368d5SNamjae Jeon if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 463e0c368d5SNamjae Jeon !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 464e0c368d5SNamjae Jeon !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 465e0c368d5SNamjae Jeon continue; 466e0c368d5SNamjae Jeon part_size = 467e0c368d5SNamjae Jeon (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 468e0c368d5SNamjae Jeon << 16) + 469e0c368d5SNamjae Jeon (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 470e0c368d5SNamjae Jeon << 8) + 471e0c368d5SNamjae Jeon ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 472e0c368d5SNamjae Jeon part_size *= (size_t)(hc_erase_grp_sz * 473e0c368d5SNamjae Jeon hc_wp_grp_sz); 474e0c368d5SNamjae Jeon mmc_part_add(card, part_size << 19, 475e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 476add710eaSJohan Rudholm "gp%d", idx, false, 477add710eaSJohan Rudholm MMC_BLK_DATA_AREA_GP); 478e0c368d5SNamjae Jeon } 479e0c368d5SNamjae Jeon } 480dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 481dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 482dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 483dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 484dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 485dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 486dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 487dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 488add710eaSJohan Rudholm 489add710eaSJohan Rudholm /* 490add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 491add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 492add710eaSJohan Rudholm * take into account the value of boot_locked below. 493add710eaSJohan Rudholm */ 494add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 495add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 49660443712SFredrik Soderstedt 49760443712SFredrik Soderstedt /* Save power class values */ 49860443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_195 = 49960443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_195]; 50060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_195 = 50160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_195]; 50260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_52_360 = 50360443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_52_360]; 50460443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_26_360 = 50560443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_26_360]; 50660443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_195 = 50760443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_195]; 50860443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_200_360 = 50960443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_200_360]; 51060443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_195 = 51160443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_195]; 51260443712SFredrik Soderstedt card->ext_csd.raw_pwr_cl_ddr_52_360 = 51360443712SFredrik Soderstedt ext_csd[EXT_CSD_PWR_CL_DDR_52_360]; 5140a5b6438SSeungwon Jeon card->ext_csd.raw_pwr_cl_ddr_200_360 = 5150a5b6438SSeungwon Jeon ext_csd[EXT_CSD_PWR_CL_DDR_200_360]; 516dfe86cbaSAdrian Hunter } 517dfe86cbaSAdrian Hunter 518b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 5197c4f10acSRomain Izard /* Adjust production date as per JEDEC JESD84-B451 */ 5207c4f10acSRomain Izard if (card->cid.year < 2010) 5217c4f10acSRomain Izard card->cid.year += 16; 5227c4f10acSRomain Izard 523950d56acSJaehoon Chung /* check whether the eMMC card supports BKOPS */ 524950d56acSJaehoon Chung if (ext_csd[EXT_CSD_BKOPS_SUPPORT] & 0x1) { 525950d56acSJaehoon Chung card->ext_csd.bkops = 1; 526950d56acSJaehoon Chung card->ext_csd.bkops_en = ext_csd[EXT_CSD_BKOPS_EN]; 527950d56acSJaehoon Chung card->ext_csd.raw_bkops_status = 528950d56acSJaehoon Chung ext_csd[EXT_CSD_BKOPS_STATUS]; 529950d56acSJaehoon Chung if (!card->ext_csd.bkops_en) 530950d56acSJaehoon Chung pr_info("%s: BKOPS_EN bit is not set\n", 531950d56acSJaehoon Chung mmc_hostname(card->host)); 532950d56acSJaehoon Chung } 533950d56acSJaehoon Chung 534eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 535eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { 536eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 537eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 538eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 539eb0d8f13SJaehoon Chung else 540eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 541eb0d8f13SJaehoon Chung /* 542eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 543eb0d8f13SJaehoon Chung * a command interrupted by HPI 544eb0d8f13SJaehoon Chung */ 545eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 546eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 547eb0d8f13SJaehoon Chung } 548eb0d8f13SJaehoon Chung 549f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 550b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 551090d25feSLoic Pallardy 552090d25feSLoic Pallardy /* 553090d25feSLoic Pallardy * RPMB regions are defined in multiples of 128K. 554090d25feSLoic Pallardy */ 555090d25feSLoic Pallardy card->ext_csd.raw_rpmb_size_mult = ext_csd[EXT_CSD_RPMB_MULT]; 556d0123ccaSBalaji T K if (ext_csd[EXT_CSD_RPMB_MULT] && mmc_host_cmd23(card->host)) { 557090d25feSLoic Pallardy mmc_part_add(card, ext_csd[EXT_CSD_RPMB_MULT] << 17, 558090d25feSLoic Pallardy EXT_CSD_PART_CONFIG_ACC_RPMB, 559090d25feSLoic Pallardy "rpmb", 0, false, 560090d25feSLoic Pallardy MMC_BLK_DATA_AREA_RPMB); 561090d25feSLoic Pallardy } 562b2499518SAdrian Hunter } 563f4c5522bSAndrei Warkentin 5645238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 565dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 566dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 567dfe86cbaSAdrian Hunter else 568dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 569dfe86cbaSAdrian Hunter 570336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 571bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 572336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 573336c716aSSeungwon Jeon 574b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 575b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 576bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 577bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 578b23cf0bdSSeungwon Jeon 579881d1c25SSeungwon Jeon card->ext_csd.cache_size = 580881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 581881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 582881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 583881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 5844265900eSSaugata Das 5854265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 5864265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 5874265900eSSaugata Das else 5884265900eSSaugata Das card->ext_csd.data_sector_size = 512; 5894265900eSSaugata Das 5904265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 5914265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 5924265900eSSaugata Das card->ext_csd.data_tag_unit_size = 5934265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 5944265900eSSaugata Das (card->ext_csd.data_sector_size); 5954265900eSSaugata Das } else { 5964265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 5974265900eSSaugata Das } 598abd9ac14SSeungwon Jeon 599abd9ac14SSeungwon Jeon card->ext_csd.max_packed_writes = 600abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_WRITES]; 601abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads = 602abd9ac14SSeungwon Jeon ext_csd[EXT_CSD_MAX_PACKED_READS]; 603a5075eb9SSaugata Das } else { 604a5075eb9SSaugata Das card->ext_csd.data_sector_size = 512; 605336c716aSSeungwon Jeon } 606881d1c25SSeungwon Jeon 6077ea239d9SPierre Ossman out: 60808ee80ccSPhilip Rakity return err; 60908ee80ccSPhilip Rakity } 6107ea239d9SPierre Ossman 61108ee80ccSPhilip Rakity static inline void mmc_free_ext_csd(u8 *ext_csd) 61208ee80ccSPhilip Rakity { 61308ee80ccSPhilip Rakity kfree(ext_csd); 61408ee80ccSPhilip Rakity } 61508ee80ccSPhilip Rakity 61608ee80ccSPhilip Rakity 617f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 61808ee80ccSPhilip Rakity { 61908ee80ccSPhilip Rakity u8 *bw_ext_csd; 62008ee80ccSPhilip Rakity int err; 62108ee80ccSPhilip Rakity 622f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 623f39b2dd9SPhilip Rakity return 0; 62408ee80ccSPhilip Rakity 625f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 626f39b2dd9SPhilip Rakity 627f39b2dd9SPhilip Rakity if (err || bw_ext_csd == NULL) { 62808ee80ccSPhilip Rakity err = -EINVAL; 62908ee80ccSPhilip Rakity goto out; 63008ee80ccSPhilip Rakity } 63108ee80ccSPhilip Rakity 63208ee80ccSPhilip Rakity /* only compare read only fields */ 633dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 63408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 635f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 63608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 637f39b2dd9SPhilip Rakity (card->ext_csd.rev == 63808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 639f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 64008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 641f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 64208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 643f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 64408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 645f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 64608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 647f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 64808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 649f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 65008ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 651f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 65208ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 653f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 65408ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 655f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 65608ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 657f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 65808ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 659f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 660f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 661f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 662f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 663f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 664f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 665f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 66660443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_SEC_CNT + 3]) && 66760443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_195 == 66860443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_195]) && 66960443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_195 == 67060443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_195]) && 67160443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_52_360 == 67260443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_52_360]) && 67360443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_26_360 == 67460443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_26_360]) && 67560443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_195 == 67660443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_195]) && 67760443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_200_360 == 67860443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_200_360]) && 67960443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_195 == 68060443712SFredrik Soderstedt bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_195]) && 68160443712SFredrik Soderstedt (card->ext_csd.raw_pwr_cl_ddr_52_360 == 6820a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_52_360]) && 6830a5b6438SSeungwon Jeon (card->ext_csd.raw_pwr_cl_ddr_200_360 == 6840a5b6438SSeungwon Jeon bw_ext_csd[EXT_CSD_PWR_CL_DDR_200_360])); 6850a5b6438SSeungwon Jeon 68608ee80ccSPhilip Rakity if (err) 68708ee80ccSPhilip Rakity err = -EINVAL; 68808ee80ccSPhilip Rakity 68908ee80ccSPhilip Rakity out: 69008ee80ccSPhilip Rakity mmc_free_ext_csd(bw_ext_csd); 6917ea239d9SPierre Ossman return err; 6927ea239d9SPierre Ossman } 6937ea239d9SPierre Ossman 69451ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 69551ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 69651ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 69751ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 69851ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 699dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 700dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 70151ec92e2SPierre Ossman MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); 70251ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 70351ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 70451ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 70551ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 70651e7e8b6SBernie Thompson MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv); 70751ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 708709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 709709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 710709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 711188cc042SLoic Pallardy MMC_DEV_ATTR(raw_rpmb_size_mult, "%#x\n", card->ext_csd.raw_rpmb_size_mult); 712188cc042SLoic Pallardy MMC_DEV_ATTR(rel_sectors, "%#x\n", card->ext_csd.rel_sectors); 71351ec92e2SPierre Ossman 71451ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 71551ec92e2SPierre Ossman &dev_attr_cid.attr, 71651ec92e2SPierre Ossman &dev_attr_csd.attr, 71751ec92e2SPierre Ossman &dev_attr_date.attr, 718dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 719dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 72051ec92e2SPierre Ossman &dev_attr_fwrev.attr, 72151ec92e2SPierre Ossman &dev_attr_hwrev.attr, 72251ec92e2SPierre Ossman &dev_attr_manfid.attr, 72351ec92e2SPierre Ossman &dev_attr_name.attr, 72451ec92e2SPierre Ossman &dev_attr_oemid.attr, 72551e7e8b6SBernie Thompson &dev_attr_prv.attr, 72651ec92e2SPierre Ossman &dev_attr_serial.attr, 727709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 728709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 729188cc042SLoic Pallardy &dev_attr_raw_rpmb_size_mult.attr, 730188cc042SLoic Pallardy &dev_attr_rel_sectors.attr, 73151ec92e2SPierre Ossman NULL, 73251ec92e2SPierre Ossman }; 733d1e58212SAxel Lin ATTRIBUTE_GROUPS(mmc_std); 73451ec92e2SPierre Ossman 73551ec92e2SPierre Ossman static struct device_type mmc_type = { 736d1e58212SAxel Lin .groups = mmc_std_groups, 73751ec92e2SPierre Ossman }; 73851ec92e2SPierre Ossman 7397ea239d9SPierre Ossman /* 740b87d8dbfSGirish K S * Select the PowerClass for the current bus width 741b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 742b87d8dbfSGirish K S * extended CSD register, select it by executing the 743b87d8dbfSGirish K S * mmc_switch command. 744b87d8dbfSGirish K S */ 7452385049dSSeungwon Jeon static int __mmc_select_powerclass(struct mmc_card *card, 74660443712SFredrik Soderstedt unsigned int bus_width) 747b87d8dbfSGirish K S { 7482385049dSSeungwon Jeon struct mmc_host *host = card->host; 7492385049dSSeungwon Jeon struct mmc_ext_csd *ext_csd = &card->ext_csd; 75060443712SFredrik Soderstedt unsigned int pwrclass_val = 0; 7512385049dSSeungwon Jeon int err = 0; 752b87d8dbfSGirish K S 753b87d8dbfSGirish K S /* Power class selection is supported for versions >= 4.0 */ 754b87d8dbfSGirish K S if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 755b87d8dbfSGirish K S return 0; 756b87d8dbfSGirish K S 757b87d8dbfSGirish K S /* Power class values are defined only for 4/8 bit bus */ 758b87d8dbfSGirish K S if (bus_width == EXT_CSD_BUS_WIDTH_1) 759b87d8dbfSGirish K S return 0; 760b87d8dbfSGirish K S 761b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 762b87d8dbfSGirish K S case MMC_VDD_165_195: 7632385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 7642385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_195; 7652385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 76660443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 7672385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_195 : 7682385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_195; 7692385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 7702385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_200_195; 771b87d8dbfSGirish K S break; 77293fc5a47SSubhash Jadavani case MMC_VDD_27_28: 77393fc5a47SSubhash Jadavani case MMC_VDD_28_29: 77493fc5a47SSubhash Jadavani case MMC_VDD_29_30: 77593fc5a47SSubhash Jadavani case MMC_VDD_30_31: 77693fc5a47SSubhash Jadavani case MMC_VDD_31_32: 777b87d8dbfSGirish K S case MMC_VDD_32_33: 778b87d8dbfSGirish K S case MMC_VDD_33_34: 779b87d8dbfSGirish K S case MMC_VDD_34_35: 780b87d8dbfSGirish K S case MMC_VDD_35_36: 7812385049dSSeungwon Jeon if (host->ios.clock <= MMC_HIGH_26_MAX_DTR) 7822385049dSSeungwon Jeon pwrclass_val = ext_csd->raw_pwr_cl_26_360; 7832385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HIGH_52_MAX_DTR) 78460443712SFredrik Soderstedt pwrclass_val = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 7852385049dSSeungwon Jeon ext_csd->raw_pwr_cl_52_360 : 7862385049dSSeungwon Jeon ext_csd->raw_pwr_cl_ddr_52_360; 7872385049dSSeungwon Jeon else if (host->ios.clock <= MMC_HS200_MAX_DTR) 7880a5b6438SSeungwon Jeon pwrclass_val = (bus_width == EXT_CSD_DDR_BUS_WIDTH_8) ? 7890a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_ddr_200_360 : 7900a5b6438SSeungwon Jeon ext_csd->raw_pwr_cl_200_360; 791b87d8dbfSGirish K S break; 792b87d8dbfSGirish K S default: 793b87d8dbfSGirish K S pr_warning("%s: Voltage range not supported " 794b87d8dbfSGirish K S "for power class.\n", mmc_hostname(host)); 795b87d8dbfSGirish K S return -EINVAL; 796b87d8dbfSGirish K S } 797b87d8dbfSGirish K S 798b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 799b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 800b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 801b87d8dbfSGirish K S else 802b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 803b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 804b87d8dbfSGirish K S 805b87d8dbfSGirish K S /* If the power class is different from the default value */ 806b87d8dbfSGirish K S if (pwrclass_val > 0) { 807b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 808b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 809b87d8dbfSGirish K S pwrclass_val, 81071fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 811b87d8dbfSGirish K S } 812b87d8dbfSGirish K S 813b87d8dbfSGirish K S return err; 814b87d8dbfSGirish K S } 815b87d8dbfSGirish K S 8162385049dSSeungwon Jeon static int mmc_select_powerclass(struct mmc_card *card) 8172385049dSSeungwon Jeon { 8182385049dSSeungwon Jeon struct mmc_host *host = card->host; 8192385049dSSeungwon Jeon u32 bus_width, ext_csd_bits; 8202385049dSSeungwon Jeon int err, ddr; 8212385049dSSeungwon Jeon 8222385049dSSeungwon Jeon /* Power class selection is supported for versions >= 4.0 */ 8232385049dSSeungwon Jeon if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 8242385049dSSeungwon Jeon return 0; 8252385049dSSeungwon Jeon 8262385049dSSeungwon Jeon bus_width = host->ios.bus_width; 8272385049dSSeungwon Jeon /* Power class values are defined only for 4/8 bit bus */ 8282385049dSSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 8292385049dSSeungwon Jeon return 0; 8302385049dSSeungwon Jeon 8312385049dSSeungwon Jeon ddr = card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52; 8322385049dSSeungwon Jeon if (ddr) 8332385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 8342385049dSSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 8352385049dSSeungwon Jeon else 8362385049dSSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 8372385049dSSeungwon Jeon EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 8382385049dSSeungwon Jeon 8392385049dSSeungwon Jeon err = __mmc_select_powerclass(card, ext_csd_bits); 8402385049dSSeungwon Jeon if (err) 8412385049dSSeungwon Jeon pr_warn("%s: power class selection to bus width %d ddr %d failed\n", 8422385049dSSeungwon Jeon mmc_hostname(host), 1 << bus_width, ddr); 8432385049dSSeungwon Jeon 8442385049dSSeungwon Jeon return err; 8452385049dSSeungwon Jeon } 8462385049dSSeungwon Jeon 847b87d8dbfSGirish K S /* 848577fb131SSeungwon Jeon * Set the bus speed for the selected speed mode. 849a4924c71SGirish K S */ 850577fb131SSeungwon Jeon static void mmc_set_bus_speed(struct mmc_card *card) 851a4924c71SGirish K S { 852577fb131SSeungwon Jeon unsigned int max_dtr = (unsigned int)-1; 853577fb131SSeungwon Jeon 8540a5b6438SSeungwon Jeon if ((mmc_card_hs200(card) || mmc_card_hs400(card)) && 8550a5b6438SSeungwon Jeon max_dtr > card->ext_csd.hs200_max_dtr) 856577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs200_max_dtr; 857577fb131SSeungwon Jeon else if (mmc_card_hs(card) && max_dtr > card->ext_csd.hs_max_dtr) 858577fb131SSeungwon Jeon max_dtr = card->ext_csd.hs_max_dtr; 859577fb131SSeungwon Jeon else if (max_dtr > card->csd.max_dtr) 860577fb131SSeungwon Jeon max_dtr = card->csd.max_dtr; 861577fb131SSeungwon Jeon 862577fb131SSeungwon Jeon mmc_set_clock(card->host, max_dtr); 863577fb131SSeungwon Jeon } 864577fb131SSeungwon Jeon 865577fb131SSeungwon Jeon /* 866577fb131SSeungwon Jeon * Select the bus width amoung 4-bit and 8-bit(SDR). 867577fb131SSeungwon Jeon * If the bus width is changed successfully, return the selected width value. 868577fb131SSeungwon Jeon * Zero is returned instead of error value if the wide width is not supported. 869577fb131SSeungwon Jeon */ 870577fb131SSeungwon Jeon static int mmc_select_bus_width(struct mmc_card *card) 871577fb131SSeungwon Jeon { 872a4924c71SGirish K S static unsigned ext_csd_bits[] = { 873a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 874577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH_4, 875a4924c71SGirish K S }; 876a4924c71SGirish K S static unsigned bus_widths[] = { 877a4924c71SGirish K S MMC_BUS_WIDTH_8, 878577fb131SSeungwon Jeon MMC_BUS_WIDTH_4, 879a4924c71SGirish K S }; 880577fb131SSeungwon Jeon struct mmc_host *host = card->host; 881577fb131SSeungwon Jeon unsigned idx, bus_width = 0; 882577fb131SSeungwon Jeon int err = 0; 883a4924c71SGirish K S 884577fb131SSeungwon Jeon if ((card->csd.mmca_vsn < CSD_SPEC_VER_4) && 885577fb131SSeungwon Jeon !(host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) 886577fb131SSeungwon Jeon return 0; 887a4924c71SGirish K S 888577fb131SSeungwon Jeon idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 0 : 1; 889a4924c71SGirish K S 890a4924c71SGirish K S /* 891a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 892a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 893a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 894a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 895a4924c71SGirish K S */ 896577fb131SSeungwon Jeon for (; idx < ARRAY_SIZE(bus_widths); idx++) { 897a4924c71SGirish K S /* 898a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 899a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 900a4924c71SGirish K S * mmc switch command returns error then switch to 901a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 902a4924c71SGirish K S * bus width on the host. 903a4924c71SGirish K S */ 904a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 905a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 906a4924c71SGirish K S ext_csd_bits[idx], 907a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 908a4924c71SGirish K S if (err) 909a4924c71SGirish K S continue; 910a4924c71SGirish K S 911577fb131SSeungwon Jeon bus_width = bus_widths[idx]; 912577fb131SSeungwon Jeon mmc_set_bus_width(host, bus_width); 913a4924c71SGirish K S 914577fb131SSeungwon Jeon /* 915577fb131SSeungwon Jeon * If controller can't handle bus width test, 916577fb131SSeungwon Jeon * compare ext_csd previously read in 1 bit mode 917577fb131SSeungwon Jeon * against ext_csd at new bus width 918577fb131SSeungwon Jeon */ 919a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 920577fb131SSeungwon Jeon err = mmc_compare_ext_csds(card, bus_width); 921a4924c71SGirish K S else 922577fb131SSeungwon Jeon err = mmc_bus_test(card, bus_width); 923577fb131SSeungwon Jeon 924577fb131SSeungwon Jeon if (!err) { 925577fb131SSeungwon Jeon err = bus_width; 926a4924c71SGirish K S break; 927577fb131SSeungwon Jeon } else { 928577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d failed\n", 929577fb131SSeungwon Jeon mmc_hostname(host), ext_csd_bits[idx]); 930577fb131SSeungwon Jeon } 931a4924c71SGirish K S } 932a4924c71SGirish K S 933577fb131SSeungwon Jeon return err; 934577fb131SSeungwon Jeon } 935577fb131SSeungwon Jeon 936577fb131SSeungwon Jeon /* 937577fb131SSeungwon Jeon * Switch to the high-speed mode 938577fb131SSeungwon Jeon */ 939577fb131SSeungwon Jeon static int mmc_select_hs(struct mmc_card *card) 940577fb131SSeungwon Jeon { 941577fb131SSeungwon Jeon int err; 942577fb131SSeungwon Jeon 9434509f847SUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 944577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 94557de31f6SUlf Hansson card->ext_csd.generic_cmd6_time, 94657de31f6SUlf Hansson true, true, true); 947577fb131SSeungwon Jeon if (!err) 948577fb131SSeungwon Jeon mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 949577fb131SSeungwon Jeon 950577fb131SSeungwon Jeon return err; 951577fb131SSeungwon Jeon } 952577fb131SSeungwon Jeon 953577fb131SSeungwon Jeon /* 954577fb131SSeungwon Jeon * Activate wide bus and DDR if supported. 955577fb131SSeungwon Jeon */ 956577fb131SSeungwon Jeon static int mmc_select_hs_ddr(struct mmc_card *card) 957577fb131SSeungwon Jeon { 958577fb131SSeungwon Jeon struct mmc_host *host = card->host; 959577fb131SSeungwon Jeon u32 bus_width, ext_csd_bits; 960577fb131SSeungwon Jeon int err = 0; 961577fb131SSeungwon Jeon 962577fb131SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_52)) 963577fb131SSeungwon Jeon return 0; 964577fb131SSeungwon Jeon 965577fb131SSeungwon Jeon bus_width = host->ios.bus_width; 966577fb131SSeungwon Jeon if (bus_width == MMC_BUS_WIDTH_1) 967577fb131SSeungwon Jeon return 0; 968577fb131SSeungwon Jeon 969577fb131SSeungwon Jeon ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 970577fb131SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8 : EXT_CSD_DDR_BUS_WIDTH_4; 971577fb131SSeungwon Jeon 972577fb131SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 973577fb131SSeungwon Jeon EXT_CSD_BUS_WIDTH, 974577fb131SSeungwon Jeon ext_csd_bits, 975577fb131SSeungwon Jeon card->ext_csd.generic_cmd6_time); 976577fb131SSeungwon Jeon if (err) { 977577fb131SSeungwon Jeon pr_warn("%s: switch to bus width %d ddr failed\n", 978577fb131SSeungwon Jeon mmc_hostname(host), 1 << bus_width); 979577fb131SSeungwon Jeon return err; 980577fb131SSeungwon Jeon } 981577fb131SSeungwon Jeon 982577fb131SSeungwon Jeon /* 983577fb131SSeungwon Jeon * eMMC cards can support 3.3V to 1.2V i/o (vccq) 984577fb131SSeungwon Jeon * signaling. 985577fb131SSeungwon Jeon * 986577fb131SSeungwon Jeon * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 987577fb131SSeungwon Jeon * 988577fb131SSeungwon Jeon * 1.8V vccq at 3.3V core voltage (vcc) is not required 989577fb131SSeungwon Jeon * in the JEDEC spec for DDR. 990577fb131SSeungwon Jeon * 991577fb131SSeungwon Jeon * Do not force change in vccq since we are obviously 992577fb131SSeungwon Jeon * working and no change to vccq is needed. 993577fb131SSeungwon Jeon * 994577fb131SSeungwon Jeon * WARNING: eMMC rules are NOT the same as SD DDR 995577fb131SSeungwon Jeon */ 996577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_DDR_1_2V) { 997577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, 998577fb131SSeungwon Jeon MMC_SIGNAL_VOLTAGE_120); 999577fb131SSeungwon Jeon if (err) 1000577fb131SSeungwon Jeon return err; 1001577fb131SSeungwon Jeon } 1002577fb131SSeungwon Jeon 1003577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_DDR52); 1004577fb131SSeungwon Jeon 1005577fb131SSeungwon Jeon return err; 1006577fb131SSeungwon Jeon } 1007577fb131SSeungwon Jeon 10080a5b6438SSeungwon Jeon static int mmc_select_hs400(struct mmc_card *card) 10090a5b6438SSeungwon Jeon { 10100a5b6438SSeungwon Jeon struct mmc_host *host = card->host; 10110a5b6438SSeungwon Jeon int err = 0; 10120a5b6438SSeungwon Jeon 10130a5b6438SSeungwon Jeon /* 10140a5b6438SSeungwon Jeon * HS400 mode requires 8-bit bus width 10150a5b6438SSeungwon Jeon */ 10160a5b6438SSeungwon Jeon if (!(card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 10170a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8)) 10180a5b6438SSeungwon Jeon return 0; 10190a5b6438SSeungwon Jeon 10200a5b6438SSeungwon Jeon /* 10210a5b6438SSeungwon Jeon * Before switching to dual data rate operation for HS400, 10220a5b6438SSeungwon Jeon * it is required to convert from HS200 mode to HS mode. 10230a5b6438SSeungwon Jeon */ 10240a5b6438SSeungwon Jeon mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 10250a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 10260a5b6438SSeungwon Jeon 10270a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10280a5b6438SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS, 10290a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time, 10300a5b6438SSeungwon Jeon true, true, true); 10310a5b6438SSeungwon Jeon if (err) { 10320a5b6438SSeungwon Jeon pr_warn("%s: switch to high-speed from hs200 failed, err:%d\n", 10330a5b6438SSeungwon Jeon mmc_hostname(host), err); 10340a5b6438SSeungwon Jeon return err; 10350a5b6438SSeungwon Jeon } 10360a5b6438SSeungwon Jeon 10370a5b6438SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10380a5b6438SSeungwon Jeon EXT_CSD_BUS_WIDTH, 10390a5b6438SSeungwon Jeon EXT_CSD_DDR_BUS_WIDTH_8, 10400a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time); 10410a5b6438SSeungwon Jeon if (err) { 10420a5b6438SSeungwon Jeon pr_warn("%s: switch to bus width for hs400 failed, err:%d\n", 10430a5b6438SSeungwon Jeon mmc_hostname(host), err); 10440a5b6438SSeungwon Jeon return err; 10450a5b6438SSeungwon Jeon } 10460a5b6438SSeungwon Jeon 10470a5b6438SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10480a5b6438SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS400, 10490a5b6438SSeungwon Jeon card->ext_csd.generic_cmd6_time, 10500a5b6438SSeungwon Jeon true, true, true); 10510a5b6438SSeungwon Jeon if (err) { 10520a5b6438SSeungwon Jeon pr_warn("%s: switch to hs400 failed, err:%d\n", 10530a5b6438SSeungwon Jeon mmc_hostname(host), err); 10540a5b6438SSeungwon Jeon return err; 10550a5b6438SSeungwon Jeon } 10560a5b6438SSeungwon Jeon 10570a5b6438SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS400); 10580a5b6438SSeungwon Jeon mmc_set_bus_speed(card); 10590a5b6438SSeungwon Jeon 10600a5b6438SSeungwon Jeon return 0; 10610a5b6438SSeungwon Jeon } 10620a5b6438SSeungwon Jeon 1063577fb131SSeungwon Jeon /* 1064577fb131SSeungwon Jeon * For device supporting HS200 mode, the following sequence 1065577fb131SSeungwon Jeon * should be done before executing the tuning process. 1066577fb131SSeungwon Jeon * 1. set the desired bus width(4-bit or 8-bit, 1-bit is not supported) 1067577fb131SSeungwon Jeon * 2. switch to HS200 mode 1068577fb131SSeungwon Jeon * 3. set the clock to > 52Mhz and <=200MHz 1069577fb131SSeungwon Jeon */ 1070577fb131SSeungwon Jeon static int mmc_select_hs200(struct mmc_card *card) 1071577fb131SSeungwon Jeon { 1072577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1073577fb131SSeungwon Jeon int err = -EINVAL; 1074577fb131SSeungwon Jeon 1075577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V) 1076577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120); 1077577fb131SSeungwon Jeon 1078577fb131SSeungwon Jeon if (err && card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_8V) 1079577fb131SSeungwon Jeon err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 1080577fb131SSeungwon Jeon 1081577fb131SSeungwon Jeon /* If fails try again during next card power cycle */ 1082577fb131SSeungwon Jeon if (err) 1083577fb131SSeungwon Jeon goto err; 1084577fb131SSeungwon Jeon 1085577fb131SSeungwon Jeon /* 1086577fb131SSeungwon Jeon * Set the bus width(4 or 8) with host's support and 1087577fb131SSeungwon Jeon * switch to HS200 mode if bus width is set successfully. 1088577fb131SSeungwon Jeon */ 1089577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 1090577fb131SSeungwon Jeon if (!IS_ERR_VALUE(err)) { 1091577fb131SSeungwon Jeon err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1092577fb131SSeungwon Jeon EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS200, 1093577fb131SSeungwon Jeon card->ext_csd.generic_cmd6_time, 1094577fb131SSeungwon Jeon true, true, true); 1095577fb131SSeungwon Jeon if (!err) 1096577fb131SSeungwon Jeon mmc_set_timing(host, MMC_TIMING_MMC_HS200); 1097577fb131SSeungwon Jeon } 1098a4924c71SGirish K S err: 1099a4924c71SGirish K S return err; 1100a4924c71SGirish K S } 1101a4924c71SGirish K S 1102a4924c71SGirish K S /* 1103577fb131SSeungwon Jeon * Activate High Speed or HS200 mode if supported. 1104577fb131SSeungwon Jeon */ 1105577fb131SSeungwon Jeon static int mmc_select_timing(struct mmc_card *card) 1106577fb131SSeungwon Jeon { 1107577fb131SSeungwon Jeon int err = 0; 1108577fb131SSeungwon Jeon 1109577fb131SSeungwon Jeon if ((card->csd.mmca_vsn < CSD_SPEC_VER_4 && 1110577fb131SSeungwon Jeon card->ext_csd.hs_max_dtr == 0)) 1111577fb131SSeungwon Jeon goto bus_speed; 1112577fb131SSeungwon Jeon 1113577fb131SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200) 1114577fb131SSeungwon Jeon err = mmc_select_hs200(card); 1115577fb131SSeungwon Jeon else if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS) 1116577fb131SSeungwon Jeon err = mmc_select_hs(card); 1117577fb131SSeungwon Jeon 1118577fb131SSeungwon Jeon if (err && err != -EBADMSG) 1119577fb131SSeungwon Jeon return err; 1120577fb131SSeungwon Jeon 1121577fb131SSeungwon Jeon if (err) { 1122577fb131SSeungwon Jeon pr_warn("%s: switch to %s failed\n", 1123577fb131SSeungwon Jeon mmc_card_hs(card) ? "high-speed" : 1124577fb131SSeungwon Jeon (mmc_card_hs200(card) ? "hs200" : ""), 1125577fb131SSeungwon Jeon mmc_hostname(card->host)); 1126577fb131SSeungwon Jeon err = 0; 1127577fb131SSeungwon Jeon } 1128577fb131SSeungwon Jeon 1129577fb131SSeungwon Jeon bus_speed: 1130577fb131SSeungwon Jeon /* 1131577fb131SSeungwon Jeon * Set the bus speed to the selected bus timing. 1132577fb131SSeungwon Jeon * If timing is not selected, backward compatible is the default. 1133577fb131SSeungwon Jeon */ 1134577fb131SSeungwon Jeon mmc_set_bus_speed(card); 1135577fb131SSeungwon Jeon return err; 1136577fb131SSeungwon Jeon } 1137577fb131SSeungwon Jeon 1138577fb131SSeungwon Jeon /* 1139577fb131SSeungwon Jeon * Execute tuning sequence to seek the proper bus operating 11400a5b6438SSeungwon Jeon * conditions for HS200 and HS400, which sends CMD21 to the device. 1141577fb131SSeungwon Jeon */ 1142577fb131SSeungwon Jeon static int mmc_hs200_tuning(struct mmc_card *card) 1143577fb131SSeungwon Jeon { 1144577fb131SSeungwon Jeon struct mmc_host *host = card->host; 1145577fb131SSeungwon Jeon int err = 0; 1146577fb131SSeungwon Jeon 11470a5b6438SSeungwon Jeon /* 11480a5b6438SSeungwon Jeon * Timing should be adjusted to the HS400 target 11490a5b6438SSeungwon Jeon * operation frequency for tuning process 11500a5b6438SSeungwon Jeon */ 11510a5b6438SSeungwon Jeon if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400 && 11520a5b6438SSeungwon Jeon host->ios.bus_width == MMC_BUS_WIDTH_8) 11530a5b6438SSeungwon Jeon if (host->ops->prepare_hs400_tuning) 11540a5b6438SSeungwon Jeon host->ops->prepare_hs400_tuning(host, &host->ios); 11550a5b6438SSeungwon Jeon 1156577fb131SSeungwon Jeon if (host->ops->execute_tuning) { 1157577fb131SSeungwon Jeon mmc_host_clk_hold(host); 1158577fb131SSeungwon Jeon err = host->ops->execute_tuning(host, 1159577fb131SSeungwon Jeon MMC_SEND_TUNING_BLOCK_HS200); 1160577fb131SSeungwon Jeon mmc_host_clk_release(host); 1161577fb131SSeungwon Jeon 1162577fb131SSeungwon Jeon if (err) 1163577fb131SSeungwon Jeon pr_warn("%s: tuning execution failed\n", 1164577fb131SSeungwon Jeon mmc_hostname(host)); 1165577fb131SSeungwon Jeon } 1166577fb131SSeungwon Jeon 1167577fb131SSeungwon Jeon return err; 1168577fb131SSeungwon Jeon } 1169577fb131SSeungwon Jeon 1170577fb131SSeungwon Jeon /* 11716abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 11726abaa0c9SPierre Ossman * 11738769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 11746abaa0c9SPierre Ossman * we're trying to reinitialise. 11757ea239d9SPierre Ossman */ 11768c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 11776abaa0c9SPierre Ossman struct mmc_card *oldcard) 11787ea239d9SPierre Ossman { 11797ea239d9SPierre Ossman struct mmc_card *card; 1180577fb131SSeungwon Jeon int err; 11817ea239d9SPierre Ossman u32 cid[4]; 1182b676f039SPhilip Rakity u32 rocr; 118308ee80ccSPhilip Rakity u8 *ext_csd = NULL; 11847ea239d9SPierre Ossman 11857ea239d9SPierre Ossman BUG_ON(!host); 1186d84075c8SPierre Ossman WARN_ON(!host->claimed); 11877ea239d9SPierre Ossman 118844669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 118944669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 119044669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 119144669034SStefan Nilsson XK 11927ea239d9SPierre Ossman /* 11937ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 11947ea239d9SPierre Ossman * need to tell some cards to go back to the idle 11957ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 11967ea239d9SPierre Ossman * respond. 1197c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 11987ea239d9SPierre Ossman */ 11997ea239d9SPierre Ossman mmc_go_idle(host); 12007ea239d9SPierre Ossman 12017ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 1202b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 120317b0429dSPierre Ossman if (err) 12046abaa0c9SPierre Ossman goto err; 12057ea239d9SPierre Ossman 12067ea239d9SPierre Ossman /* 1207af517150SDavid Brownell * For SPI, enable CRC as appropriate. 1208af517150SDavid Brownell */ 1209af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1210af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 1211af517150SDavid Brownell if (err) 1212af517150SDavid Brownell goto err; 1213af517150SDavid Brownell } 1214af517150SDavid Brownell 1215af517150SDavid Brownell /* 12167ea239d9SPierre Ossman * Fetch CID from card. 12177ea239d9SPierre Ossman */ 1218af517150SDavid Brownell if (mmc_host_is_spi(host)) 1219af517150SDavid Brownell err = mmc_send_cid(host, cid); 1220af517150SDavid Brownell else 12217ea239d9SPierre Ossman err = mmc_all_send_cid(host, cid); 122217b0429dSPierre Ossman if (err) 12237ea239d9SPierre Ossman goto err; 12247ea239d9SPierre Ossman 12256abaa0c9SPierre Ossman if (oldcard) { 1226adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 1227adf66a0dSPierre Ossman err = -ENOENT; 12286abaa0c9SPierre Ossman goto err; 1229adf66a0dSPierre Ossman } 12306abaa0c9SPierre Ossman 12316abaa0c9SPierre Ossman card = oldcard; 12326abaa0c9SPierre Ossman } else { 12337ea239d9SPierre Ossman /* 12347ea239d9SPierre Ossman * Allocate card structure. 12357ea239d9SPierre Ossman */ 123651ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 1237adf66a0dSPierre Ossman if (IS_ERR(card)) { 1238adf66a0dSPierre Ossman err = PTR_ERR(card); 12397ea239d9SPierre Ossman goto err; 1240adf66a0dSPierre Ossman } 12417ea239d9SPierre Ossman 124269041150SUlf Hansson card->ocr = ocr; 12437ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 12447ea239d9SPierre Ossman card->rca = 1; 12457ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 12466abaa0c9SPierre Ossman } 12477ea239d9SPierre Ossman 12487ea239d9SPierre Ossman /* 1249af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 12507ea239d9SPierre Ossman */ 1251af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 12527ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 125317b0429dSPierre Ossman if (err) 12547ea239d9SPierre Ossman goto free_card; 12557ea239d9SPierre Ossman 12567ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 1257af517150SDavid Brownell } 12587ea239d9SPierre Ossman 12596abaa0c9SPierre Ossman if (!oldcard) { 12607ea239d9SPierre Ossman /* 12617ea239d9SPierre Ossman * Fetch CSD from card. 12627ea239d9SPierre Ossman */ 12637ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 126417b0429dSPierre Ossman if (err) 12657ea239d9SPierre Ossman goto free_card; 12667ea239d9SPierre Ossman 1267bd766312SPierre Ossman err = mmc_decode_csd(card); 1268adf66a0dSPierre Ossman if (err) 1269bd766312SPierre Ossman goto free_card; 1270bd766312SPierre Ossman err = mmc_decode_cid(card); 1271adf66a0dSPierre Ossman if (err) 1272bd766312SPierre Ossman goto free_card; 12736abaa0c9SPierre Ossman } 12747ea239d9SPierre Ossman 12757ea239d9SPierre Ossman /* 12763d705d14SSascha Hauer * handling only for cards supporting DSR and hosts requesting 12773d705d14SSascha Hauer * DSR configuration 12783d705d14SSascha Hauer */ 12793d705d14SSascha Hauer if (card->csd.dsr_imp && host->dsr_req) 12803d705d14SSascha Hauer mmc_set_dsr(host); 12813d705d14SSascha Hauer 12823d705d14SSascha Hauer /* 128389a73cf5SPierre Ossman * Select card, as all following commands rely on that. 12847ea239d9SPierre Ossman */ 1285af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 12867ea239d9SPierre Ossman err = mmc_select_card(card); 128717b0429dSPierre Ossman if (err) 12887ea239d9SPierre Ossman goto free_card; 1289af517150SDavid Brownell } 12907ea239d9SPierre Ossman 12916abaa0c9SPierre Ossman if (!oldcard) { 129289a73cf5SPierre Ossman /* 1293af517150SDavid Brownell * Fetch and process extended CSD. 129489a73cf5SPierre Ossman */ 129508ee80ccSPhilip Rakity 129608ee80ccSPhilip Rakity err = mmc_get_ext_csd(card, &ext_csd); 129708ee80ccSPhilip Rakity if (err) 129808ee80ccSPhilip Rakity goto free_card; 129908ee80ccSPhilip Rakity err = mmc_read_ext_csd(card, ext_csd); 130017b0429dSPierre Ossman if (err) 13017ea239d9SPierre Ossman goto free_card; 1302b676f039SPhilip Rakity 1303b676f039SPhilip Rakity /* If doing byte addressing, check if required to do sector 1304b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 1305b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 1306b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 1307b676f039SPhilip Rakity */ 1308b676f039SPhilip Rakity if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) 1309b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 1310b676f039SPhilip Rakity 1311dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 1312dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 13136abaa0c9SPierre Ossman } 13147ea239d9SPierre Ossman 13157ea239d9SPierre Ossman /* 1316709de99dSChuanxiao Dong * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF 1317709de99dSChuanxiao Dong * bit. This bit will be lost every time after a reset or power off. 1318709de99dSChuanxiao Dong */ 131983bb24aaSAdrian Hunter if (card->ext_csd.enhanced_area_en || 132083bb24aaSAdrian Hunter (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { 1321709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1322b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 1323b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1324709de99dSChuanxiao Dong 1325709de99dSChuanxiao Dong if (err && err != -EBADMSG) 1326709de99dSChuanxiao Dong goto free_card; 1327709de99dSChuanxiao Dong 1328709de99dSChuanxiao Dong if (err) { 1329709de99dSChuanxiao Dong err = 0; 1330709de99dSChuanxiao Dong /* 1331709de99dSChuanxiao Dong * Just disable enhanced area off & sz 1332709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 1333709de99dSChuanxiao Dong * during next time reinit 1334709de99dSChuanxiao Dong */ 1335709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 1336709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 1337709de99dSChuanxiao Dong } else { 1338709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 1339709de99dSChuanxiao Dong /* 1340709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 1341709de99dSChuanxiao Dong * This will affect the erase size, so 1342709de99dSChuanxiao Dong * here need to reset erase size 1343709de99dSChuanxiao Dong */ 1344709de99dSChuanxiao Dong mmc_set_erase_size(card); 1345709de99dSChuanxiao Dong } 1346709de99dSChuanxiao Dong } 1347709de99dSChuanxiao Dong 1348709de99dSChuanxiao Dong /* 134941e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 135041e2a489SPhilip Rakity */ 1351371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 1352371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 1353371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 1354371a689fSAndrei Warkentin card->ext_csd.part_config, 1355371a689fSAndrei Warkentin card->ext_csd.part_time); 1356371a689fSAndrei Warkentin if (err && err != -EBADMSG) 1357371a689fSAndrei Warkentin goto free_card; 135841e2a489SPhilip Rakity } 135941e2a489SPhilip Rakity 136041e2a489SPhilip Rakity /* 136143235679SUlf Hansson * Enable power_off_notification byte in the ext_csd register 1362bec8726aSGirish K S */ 136343235679SUlf Hansson if (card->ext_csd.rev >= 6) { 1364bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1365bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1366bec8726aSGirish K S EXT_CSD_POWER_ON, 1367bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1368bec8726aSGirish K S if (err && err != -EBADMSG) 1369bec8726aSGirish K S goto free_card; 1370bec8726aSGirish K S 137196a85d54SGirish K S /* 137296a85d54SGirish K S * The err can be -EBADMSG or 0, 137396a85d54SGirish K S * so check for success and update the flag 137496a85d54SGirish K S */ 1375bec8726aSGirish K S if (!err) 1376e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_POWER_ON; 137796a85d54SGirish K S } 1378bec8726aSGirish K S 1379bec8726aSGirish K S /* 1380577fb131SSeungwon Jeon * Select timing interface 138189a73cf5SPierre Ossman */ 1382577fb131SSeungwon Jeon err = mmc_select_timing(card); 1383577fb131SSeungwon Jeon if (err) 138489a73cf5SPierre Ossman goto free_card; 138589a73cf5SPierre Ossman 1386a4924c71SGirish K S if (mmc_card_hs200(card)) { 1387577fb131SSeungwon Jeon err = mmc_hs200_tuning(card); 13884c4cb171SPhilip Rakity if (err) 13894c4cb171SPhilip Rakity goto err; 13900a5b6438SSeungwon Jeon 13910a5b6438SSeungwon Jeon err = mmc_select_hs400(card); 13920a5b6438SSeungwon Jeon if (err) 13930a5b6438SSeungwon Jeon goto err; 1394577fb131SSeungwon Jeon } else if (mmc_card_hs(card)) { 1395577fb131SSeungwon Jeon /* Select the desired bus width optionally */ 1396577fb131SSeungwon Jeon err = mmc_select_bus_width(card); 1397577fb131SSeungwon Jeon if (!IS_ERR_VALUE(err)) { 1398577fb131SSeungwon Jeon err = mmc_select_hs_ddr(card); 1399577fb131SSeungwon Jeon if (err) 1400577fb131SSeungwon Jeon goto err; 140189a73cf5SPierre Ossman } 1402ef0b27d4SAdrian Hunter } 140389a73cf5SPierre Ossman 1404881d1c25SSeungwon Jeon /* 14052385049dSSeungwon Jeon * Choose the power class with selected bus interface 14062385049dSSeungwon Jeon */ 14072385049dSSeungwon Jeon mmc_select_powerclass(card); 14082385049dSSeungwon Jeon 14092385049dSSeungwon Jeon /* 141052d0974eSSubhash Jadavani * Enable HPI feature (if supported) 141152d0974eSSubhash Jadavani */ 141252d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 141352d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 141452d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 141552d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 141652d0974eSSubhash Jadavani if (err && err != -EBADMSG) 141752d0974eSSubhash Jadavani goto free_card; 141852d0974eSSubhash Jadavani if (err) { 141952d0974eSSubhash Jadavani pr_warning("%s: Enabling HPI failed\n", 142052d0974eSSubhash Jadavani mmc_hostname(card->host)); 142152d0974eSSubhash Jadavani err = 0; 142252d0974eSSubhash Jadavani } else 142352d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 142452d0974eSSubhash Jadavani } 142552d0974eSSubhash Jadavani 142652d0974eSSubhash Jadavani /* 1427881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1428881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1429881d1c25SSeungwon Jeon */ 14307536d3f8SUlf Hansson if (card->ext_csd.cache_size > 0) { 1431881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 14328bc0678bSSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 14338bc0678bSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1434881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1435881d1c25SSeungwon Jeon goto free_card; 1436881d1c25SSeungwon Jeon 1437881d1c25SSeungwon Jeon /* 1438881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1439881d1c25SSeungwon Jeon */ 14408bc0678bSSeungwon Jeon if (err) { 14418bc0678bSSeungwon Jeon pr_warning("%s: Cache is supported, " 14428bc0678bSSeungwon Jeon "but failed to turn on (%d)\n", 14438bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 14448bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 14458bc0678bSSeungwon Jeon err = 0; 14468bc0678bSSeungwon Jeon } else { 14478bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 14488bc0678bSSeungwon Jeon } 1449881d1c25SSeungwon Jeon } 1450881d1c25SSeungwon Jeon 1451abd9ac14SSeungwon Jeon /* 1452abd9ac14SSeungwon Jeon * The mandatory minimum values are defined for packed command. 1453abd9ac14SSeungwon Jeon * read: 5, write: 3 1454abd9ac14SSeungwon Jeon */ 1455abd9ac14SSeungwon Jeon if (card->ext_csd.max_packed_writes >= 3 && 1456abd9ac14SSeungwon Jeon card->ext_csd.max_packed_reads >= 5 && 1457abd9ac14SSeungwon Jeon host->caps2 & MMC_CAP2_PACKED_CMD) { 1458abd9ac14SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1459abd9ac14SSeungwon Jeon EXT_CSD_EXP_EVENTS_CTRL, 1460abd9ac14SSeungwon Jeon EXT_CSD_PACKED_EVENT_EN, 1461abd9ac14SSeungwon Jeon card->ext_csd.generic_cmd6_time); 1462abd9ac14SSeungwon Jeon if (err && err != -EBADMSG) 1463abd9ac14SSeungwon Jeon goto free_card; 1464abd9ac14SSeungwon Jeon if (err) { 1465abd9ac14SSeungwon Jeon pr_warn("%s: Enabling packed event failed\n", 1466abd9ac14SSeungwon Jeon mmc_hostname(card->host)); 1467abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 0; 1468abd9ac14SSeungwon Jeon err = 0; 1469abd9ac14SSeungwon Jeon } else { 1470abd9ac14SSeungwon Jeon card->ext_csd.packed_event_en = 1; 1471abd9ac14SSeungwon Jeon } 1472abd9ac14SSeungwon Jeon } 1473abd9ac14SSeungwon Jeon 14746abaa0c9SPierre Ossman if (!oldcard) 14757ea239d9SPierre Ossman host->card = card; 14767ea239d9SPierre Ossman 147708ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 147817b0429dSPierre Ossman return 0; 14796abaa0c9SPierre Ossman 14806abaa0c9SPierre Ossman free_card: 14816abaa0c9SPierre Ossman if (!oldcard) 14826abaa0c9SPierre Ossman mmc_remove_card(card); 14836abaa0c9SPierre Ossman err: 148408ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 14856abaa0c9SPierre Ossman 1486adf66a0dSPierre Ossman return err; 14876abaa0c9SPierre Ossman } 14886abaa0c9SPierre Ossman 148907a68216SUlf Hansson static int mmc_can_sleep(struct mmc_card *card) 149007a68216SUlf Hansson { 149107a68216SUlf Hansson return (card && card->ext_csd.rev >= 3); 149207a68216SUlf Hansson } 149307a68216SUlf Hansson 149407a68216SUlf Hansson static int mmc_sleep(struct mmc_host *host) 149507a68216SUlf Hansson { 149607a68216SUlf Hansson struct mmc_command cmd = {0}; 149707a68216SUlf Hansson struct mmc_card *card = host->card; 1498cb962e04SUlf Hansson unsigned int timeout_ms = DIV_ROUND_UP(card->ext_csd.sa_timeout, 10000); 149907a68216SUlf Hansson int err; 150007a68216SUlf Hansson 150107a68216SUlf Hansson err = mmc_deselect_cards(host); 150207a68216SUlf Hansson if (err) 150307a68216SUlf Hansson return err; 150407a68216SUlf Hansson 150507a68216SUlf Hansson cmd.opcode = MMC_SLEEP_AWAKE; 150607a68216SUlf Hansson cmd.arg = card->rca << 16; 150707a68216SUlf Hansson cmd.arg |= 1 << 15; 150807a68216SUlf Hansson 1509cb962e04SUlf Hansson /* 1510cb962e04SUlf Hansson * If the max_busy_timeout of the host is specified, validate it against 1511cb962e04SUlf Hansson * the sleep cmd timeout. A failure means we need to prevent the host 1512cb962e04SUlf Hansson * from doing hw busy detection, which is done by converting to a R1 1513cb962e04SUlf Hansson * response instead of a R1B. 1514cb962e04SUlf Hansson */ 1515cb962e04SUlf Hansson if (host->max_busy_timeout && (timeout_ms > host->max_busy_timeout)) { 1516cb962e04SUlf Hansson cmd.flags = MMC_RSP_R1 | MMC_CMD_AC; 1517cb962e04SUlf Hansson } else { 151807a68216SUlf Hansson cmd.flags = MMC_RSP_R1B | MMC_CMD_AC; 1519cb962e04SUlf Hansson cmd.busy_timeout = timeout_ms; 1520cb962e04SUlf Hansson } 1521cb962e04SUlf Hansson 152207a68216SUlf Hansson err = mmc_wait_for_cmd(host, &cmd, 0); 152307a68216SUlf Hansson if (err) 152407a68216SUlf Hansson return err; 152507a68216SUlf Hansson 152607a68216SUlf Hansson /* 152707a68216SUlf Hansson * If the host does not wait while the card signals busy, then we will 152807a68216SUlf Hansson * will have to wait the sleep/awake timeout. Note, we cannot use the 152907a68216SUlf Hansson * SEND_STATUS command to poll the status because that command (and most 153007a68216SUlf Hansson * others) is invalid while the card sleeps. 153107a68216SUlf Hansson */ 1532cb962e04SUlf Hansson if (!cmd.busy_timeout || !(host->caps & MMC_CAP_WAIT_WHILE_BUSY)) 1533cb962e04SUlf Hansson mmc_delay(timeout_ms); 153407a68216SUlf Hansson 153507a68216SUlf Hansson return err; 153607a68216SUlf Hansson } 153707a68216SUlf Hansson 1538e6c08586SUlf Hansson static int mmc_can_poweroff_notify(const struct mmc_card *card) 1539e6c08586SUlf Hansson { 1540e6c08586SUlf Hansson return card && 1541e6c08586SUlf Hansson mmc_card_mmc(card) && 1542e6c08586SUlf Hansson (card->ext_csd.power_off_notification == EXT_CSD_POWER_ON); 1543e6c08586SUlf Hansson } 1544e6c08586SUlf Hansson 1545e6c08586SUlf Hansson static int mmc_poweroff_notify(struct mmc_card *card, unsigned int notify_type) 1546e6c08586SUlf Hansson { 1547e6c08586SUlf Hansson unsigned int timeout = card->ext_csd.generic_cmd6_time; 1548e6c08586SUlf Hansson int err; 1549e6c08586SUlf Hansson 1550e6c08586SUlf Hansson /* Use EXT_CSD_POWER_OFF_SHORT as default notification type. */ 1551e6c08586SUlf Hansson if (notify_type == EXT_CSD_POWER_OFF_LONG) 1552e6c08586SUlf Hansson timeout = card->ext_csd.power_off_longtime; 1553e6c08586SUlf Hansson 1554878e200bSUlf Hansson err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1555e6c08586SUlf Hansson EXT_CSD_POWER_OFF_NOTIFICATION, 15564509f847SUlf Hansson notify_type, timeout, true, false, false); 1557e6c08586SUlf Hansson if (err) 1558e6c08586SUlf Hansson pr_err("%s: Power Off Notification timed out, %u\n", 1559e6c08586SUlf Hansson mmc_hostname(card->host), timeout); 1560e6c08586SUlf Hansson 1561e6c08586SUlf Hansson /* Disable the power off notification after the switch operation. */ 1562e6c08586SUlf Hansson card->ext_csd.power_off_notification = EXT_CSD_NO_POWER_NOTIFICATION; 1563e6c08586SUlf Hansson 1564e6c08586SUlf Hansson return err; 1565e6c08586SUlf Hansson } 1566e6c08586SUlf Hansson 15676abaa0c9SPierre Ossman /* 15686abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 15696abaa0c9SPierre Ossman */ 15706abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 15716abaa0c9SPierre Ossman { 15726abaa0c9SPierre Ossman BUG_ON(!host); 15736abaa0c9SPierre Ossman BUG_ON(!host->card); 15746abaa0c9SPierre Ossman 15756abaa0c9SPierre Ossman mmc_remove_card(host->card); 15766abaa0c9SPierre Ossman host->card = NULL; 15776abaa0c9SPierre Ossman } 15786abaa0c9SPierre Ossman 15796abaa0c9SPierre Ossman /* 1580d3049504SAdrian Hunter * Card detection - card is alive. 1581d3049504SAdrian Hunter */ 1582d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1583d3049504SAdrian Hunter { 1584d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1585d3049504SAdrian Hunter } 1586d3049504SAdrian Hunter 1587d3049504SAdrian Hunter /* 15886abaa0c9SPierre Ossman * Card detection callback from host. 15896abaa0c9SPierre Ossman */ 15906abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 15916abaa0c9SPierre Ossman { 15926abaa0c9SPierre Ossman int err; 15936abaa0c9SPierre Ossman 15946abaa0c9SPierre Ossman BUG_ON(!host); 15956abaa0c9SPierre Ossman BUG_ON(!host->card); 15966abaa0c9SPierre Ossman 1597e94cfef6SUlf Hansson mmc_get_card(host->card); 15986abaa0c9SPierre Ossman 15996abaa0c9SPierre Ossman /* 16006abaa0c9SPierre Ossman * Just check if our card has been removed. 16016abaa0c9SPierre Ossman */ 1602d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 16036abaa0c9SPierre Ossman 1604e94cfef6SUlf Hansson mmc_put_card(host->card); 16057ea239d9SPierre Ossman 160617b0429dSPierre Ossman if (err) { 16074101c16aSPierre Ossman mmc_remove(host); 16086abaa0c9SPierre Ossman 16096abaa0c9SPierre Ossman mmc_claim_host(host); 16106abaa0c9SPierre Ossman mmc_detach_bus(host); 16117f7e4129SUlf Hansson mmc_power_off(host); 16126abaa0c9SPierre Ossman mmc_release_host(host); 16136abaa0c9SPierre Ossman } 16146abaa0c9SPierre Ossman } 16156abaa0c9SPierre Ossman 161603d071fcSUlf Hansson static int _mmc_suspend(struct mmc_host *host, bool is_suspend) 16176abaa0c9SPierre Ossman { 1618c3805467SBalaji T K int err = 0; 161903d071fcSUlf Hansson unsigned int notify_type = is_suspend ? EXT_CSD_POWER_OFF_SHORT : 162003d071fcSUlf Hansson EXT_CSD_POWER_OFF_LONG; 1621c3805467SBalaji T K 16226abaa0c9SPierre Ossman BUG_ON(!host); 16236abaa0c9SPierre Ossman BUG_ON(!host->card); 16246abaa0c9SPierre Ossman 16256abaa0c9SPierre Ossman mmc_claim_host(host); 1626881d926dSMaya Erez 16279ec775f7SUlf Hansson if (mmc_card_suspended(host->card)) 16289ec775f7SUlf Hansson goto out; 16299ec775f7SUlf Hansson 163039b9431bSUlf Hansson if (mmc_card_doing_bkops(host->card)) { 163139b9431bSUlf Hansson err = mmc_stop_bkops(host->card); 163239b9431bSUlf Hansson if (err) 163339b9431bSUlf Hansson goto out; 163439b9431bSUlf Hansson } 163539b9431bSUlf Hansson 163610e5d965SUlf Hansson err = mmc_flush_cache(host->card); 1637881d926dSMaya Erez if (err) 1638881d926dSMaya Erez goto out; 1639881d926dSMaya Erez 164043235679SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 164153275c21SUlf Hansson ((host->caps2 & MMC_CAP2_FULL_PWR_CYCLE) || !is_suspend)) 164203d071fcSUlf Hansson err = mmc_poweroff_notify(host->card, notify_type); 164307a68216SUlf Hansson else if (mmc_can_sleep(host->card)) 164407a68216SUlf Hansson err = mmc_sleep(host); 1645e6c08586SUlf Hansson else if (!mmc_host_is_spi(host)) 164685e727edSJaehoon Chung err = mmc_deselect_cards(host); 164795cdfb72SNicolas Pitre 16489ec775f7SUlf Hansson if (!err) { 164974590263SUlf Hansson mmc_power_off(host); 16509ec775f7SUlf Hansson mmc_card_set_suspended(host->card); 16519ec775f7SUlf Hansson } 1652881d926dSMaya Erez out: 1653881d926dSMaya Erez mmc_release_host(host); 1654c3805467SBalaji T K return err; 16556abaa0c9SPierre Ossman } 16566abaa0c9SPierre Ossman 16576abaa0c9SPierre Ossman /* 16580cb403a2SUlf Hansson * Suspend callback 165903d071fcSUlf Hansson */ 166003d071fcSUlf Hansson static int mmc_suspend(struct mmc_host *host) 166103d071fcSUlf Hansson { 16620cb403a2SUlf Hansson int err; 16630cb403a2SUlf Hansson 16640cb403a2SUlf Hansson err = _mmc_suspend(host, true); 16650cb403a2SUlf Hansson if (!err) { 16660cb403a2SUlf Hansson pm_runtime_disable(&host->card->dev); 16670cb403a2SUlf Hansson pm_runtime_set_suspended(&host->card->dev); 16680cb403a2SUlf Hansson } 16690cb403a2SUlf Hansson 16700cb403a2SUlf Hansson return err; 167103d071fcSUlf Hansson } 167203d071fcSUlf Hansson 167303d071fcSUlf Hansson /* 16746abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 16756abaa0c9SPierre Ossman * and, if so, restore all state to it. 16766abaa0c9SPierre Ossman */ 16770cb403a2SUlf Hansson static int _mmc_resume(struct mmc_host *host) 16786abaa0c9SPierre Ossman { 16799ec775f7SUlf Hansson int err = 0; 16806abaa0c9SPierre Ossman 16816abaa0c9SPierre Ossman BUG_ON(!host); 16826abaa0c9SPierre Ossman BUG_ON(!host->card); 16836abaa0c9SPierre Ossman 16846abaa0c9SPierre Ossman mmc_claim_host(host); 16859ec775f7SUlf Hansson 16869ec775f7SUlf Hansson if (!mmc_card_suspended(host->card)) 16879ec775f7SUlf Hansson goto out; 16889ec775f7SUlf Hansson 168969041150SUlf Hansson mmc_power_up(host, host->card->ocr); 169069041150SUlf Hansson err = mmc_init_card(host, host->card->ocr, host->card); 16919ec775f7SUlf Hansson mmc_card_clr_suspended(host->card); 16922986d0bfSPierre Ossman 16939ec775f7SUlf Hansson out: 16949ec775f7SUlf Hansson mmc_release_host(host); 169595cdfb72SNicolas Pitre return err; 16966abaa0c9SPierre Ossman } 16976abaa0c9SPierre Ossman 16989ec775f7SUlf Hansson /* 16999ec775f7SUlf Hansson * Shutdown callback 17009ec775f7SUlf Hansson */ 17019ec775f7SUlf Hansson static int mmc_shutdown(struct mmc_host *host) 17029ec775f7SUlf Hansson { 17039ec775f7SUlf Hansson int err = 0; 17049ec775f7SUlf Hansson 17059ec775f7SUlf Hansson /* 17069ec775f7SUlf Hansson * In a specific case for poweroff notify, we need to resume the card 17079ec775f7SUlf Hansson * before we can shutdown it properly. 17089ec775f7SUlf Hansson */ 17099ec775f7SUlf Hansson if (mmc_can_poweroff_notify(host->card) && 17109ec775f7SUlf Hansson !(host->caps2 & MMC_CAP2_FULL_PWR_CYCLE)) 17110cb403a2SUlf Hansson err = _mmc_resume(host); 17129ec775f7SUlf Hansson 17139ec775f7SUlf Hansson if (!err) 17149ec775f7SUlf Hansson err = _mmc_suspend(host, false); 17159ec775f7SUlf Hansson 17169ec775f7SUlf Hansson return err; 17179ec775f7SUlf Hansson } 1718c4d770d7SUlf Hansson 1719c4d770d7SUlf Hansson /* 17200cb403a2SUlf Hansson * Callback for resume. 17210cb403a2SUlf Hansson */ 17220cb403a2SUlf Hansson static int mmc_resume(struct mmc_host *host) 17230cb403a2SUlf Hansson { 17244d223782SUlf Hansson int err = 0; 17250cb403a2SUlf Hansson 17264d223782SUlf Hansson if (!(host->caps & MMC_CAP_RUNTIME_RESUME)) { 17270cb403a2SUlf Hansson err = _mmc_resume(host); 17280cb403a2SUlf Hansson pm_runtime_set_active(&host->card->dev); 17290cb403a2SUlf Hansson pm_runtime_mark_last_busy(&host->card->dev); 17304d223782SUlf Hansson } 17310cb403a2SUlf Hansson pm_runtime_enable(&host->card->dev); 17320cb403a2SUlf Hansson 17330cb403a2SUlf Hansson return err; 17340cb403a2SUlf Hansson } 17350cb403a2SUlf Hansson 17360cb403a2SUlf Hansson /* 1737c4d770d7SUlf Hansson * Callback for runtime_suspend. 1738c4d770d7SUlf Hansson */ 1739c4d770d7SUlf Hansson static int mmc_runtime_suspend(struct mmc_host *host) 1740c4d770d7SUlf Hansson { 1741c4d770d7SUlf Hansson int err; 1742c4d770d7SUlf Hansson 1743c4d770d7SUlf Hansson if (!(host->caps & MMC_CAP_AGGRESSIVE_PM)) 1744c4d770d7SUlf Hansson return 0; 1745c4d770d7SUlf Hansson 17460cb403a2SUlf Hansson err = _mmc_suspend(host, true); 17470cc81a8cSUlf Hansson if (err) 1748c4d770d7SUlf Hansson pr_err("%s: error %d doing aggessive suspend\n", 1749c4d770d7SUlf Hansson mmc_hostname(host), err); 1750c4d770d7SUlf Hansson 1751c4d770d7SUlf Hansson return err; 1752c4d770d7SUlf Hansson } 1753c4d770d7SUlf Hansson 1754c4d770d7SUlf Hansson /* 1755c4d770d7SUlf Hansson * Callback for runtime_resume. 1756c4d770d7SUlf Hansson */ 1757c4d770d7SUlf Hansson static int mmc_runtime_resume(struct mmc_host *host) 1758c4d770d7SUlf Hansson { 1759c4d770d7SUlf Hansson int err; 1760c4d770d7SUlf Hansson 17614d223782SUlf Hansson if (!(host->caps & (MMC_CAP_AGGRESSIVE_PM | MMC_CAP_RUNTIME_RESUME))) 1762c4d770d7SUlf Hansson return 0; 1763c4d770d7SUlf Hansson 17640cb403a2SUlf Hansson err = _mmc_resume(host); 1765c4d770d7SUlf Hansson if (err) 1766c4d770d7SUlf Hansson pr_err("%s: error %d doing aggessive resume\n", 1767c4d770d7SUlf Hansson mmc_hostname(host), err); 1768c4d770d7SUlf Hansson 1769c4d770d7SUlf Hansson return 0; 1770c4d770d7SUlf Hansson } 1771c4d770d7SUlf Hansson 177212ae637fSOhad Ben-Cohen static int mmc_power_restore(struct mmc_host *host) 1773eae1aeeeSAdrian Hunter { 177412ae637fSOhad Ben-Cohen int ret; 177512ae637fSOhad Ben-Cohen 1776eae1aeeeSAdrian Hunter mmc_claim_host(host); 177769041150SUlf Hansson ret = mmc_init_card(host, host->card->ocr, host->card); 1778eae1aeeeSAdrian Hunter mmc_release_host(host); 177912ae637fSOhad Ben-Cohen 178012ae637fSOhad Ben-Cohen return ret; 1781eae1aeeeSAdrian Hunter } 1782eae1aeeeSAdrian Hunter 17839feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 17849feae246SAdrian Hunter .remove = mmc_remove, 17859feae246SAdrian Hunter .detect = mmc_detect, 17869feae246SAdrian Hunter .suspend = mmc_suspend, 17879feae246SAdrian Hunter .resume = mmc_resume, 1788c4d770d7SUlf Hansson .runtime_suspend = mmc_runtime_suspend, 1789c4d770d7SUlf Hansson .runtime_resume = mmc_runtime_resume, 1790eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1791d3049504SAdrian Hunter .alive = mmc_alive, 1792486fdbbcSUlf Hansson .shutdown = mmc_shutdown, 17939feae246SAdrian Hunter }; 17949feae246SAdrian Hunter 17956abaa0c9SPierre Ossman /* 17966abaa0c9SPierre Ossman * Starting point for MMC card init. 17976abaa0c9SPierre Ossman */ 1798807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 17996abaa0c9SPierre Ossman { 18006abaa0c9SPierre Ossman int err; 180169041150SUlf Hansson u32 ocr, rocr; 18026abaa0c9SPierre Ossman 18036abaa0c9SPierre Ossman BUG_ON(!host); 1804d84075c8SPierre Ossman WARN_ON(!host->claimed); 18056abaa0c9SPierre Ossman 180644669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 180744669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 180844669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 180944669034SStefan Nilsson XK 1810807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 1811807e8e40SAndy Ross if (err) 1812807e8e40SAndy Ross return err; 1813807e8e40SAndy Ross 18142501c917SUlf Hansson mmc_attach_bus(host, &mmc_ops); 18158f230f45STakashi Iwai if (host->ocr_avail_mmc) 18168f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 18176abaa0c9SPierre Ossman 18186abaa0c9SPierre Ossman /* 1819af517150SDavid Brownell * We need to get OCR a different way for SPI. 1820af517150SDavid Brownell */ 1821af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1822af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 1823af517150SDavid Brownell if (err) 1824af517150SDavid Brownell goto err; 1825af517150SDavid Brownell } 1826af517150SDavid Brownell 182769041150SUlf Hansson rocr = mmc_select_voltage(host, ocr); 18286abaa0c9SPierre Ossman 18296abaa0c9SPierre Ossman /* 18306abaa0c9SPierre Ossman * Can we support the voltage of the card? 18316abaa0c9SPierre Ossman */ 183269041150SUlf Hansson if (!rocr) { 1833109b5bedSPierre Ossman err = -EINVAL; 18346abaa0c9SPierre Ossman goto err; 1835109b5bedSPierre Ossman } 18366abaa0c9SPierre Ossman 18376abaa0c9SPierre Ossman /* 18386abaa0c9SPierre Ossman * Detect and init the card. 18396abaa0c9SPierre Ossman */ 184069041150SUlf Hansson err = mmc_init_card(host, rocr, NULL); 184117b0429dSPierre Ossman if (err) 18426abaa0c9SPierre Ossman goto err; 18436abaa0c9SPierre Ossman 18446abaa0c9SPierre Ossman mmc_release_host(host); 18454101c16aSPierre Ossman err = mmc_add_card(host->card); 1846807e8e40SAndy Ross mmc_claim_host(host); 18477ea239d9SPierre Ossman if (err) 18482986d0bfSPierre Ossman goto remove_card; 18497ea239d9SPierre Ossman 18507ea239d9SPierre Ossman return 0; 18517ea239d9SPierre Ossman 18522986d0bfSPierre Ossman remove_card: 1853807e8e40SAndy Ross mmc_release_host(host); 18546abaa0c9SPierre Ossman mmc_remove_card(host->card); 18552986d0bfSPierre Ossman mmc_claim_host(host); 1856807e8e40SAndy Ross host->card = NULL; 18577ea239d9SPierre Ossman err: 18587ea239d9SPierre Ossman mmc_detach_bus(host); 18597ea239d9SPierre Ossman 1860a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 1861109b5bedSPierre Ossman mmc_hostname(host), err); 1862109b5bedSPierre Ossman 1863adf66a0dSPierre Ossman return err; 18647ea239d9SPierre Ossman } 1865