17ea239d9SPierre Ossman /* 270f10482SPierre Ossman * linux/drivers/mmc/core/mmc.c 37ea239d9SPierre Ossman * 47ea239d9SPierre Ossman * Copyright (C) 2003-2004 Russell King, All Rights Reserved. 57ea239d9SPierre Ossman * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. 67ea239d9SPierre Ossman * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved. 77ea239d9SPierre Ossman * 87ea239d9SPierre Ossman * This program is free software; you can redistribute it and/or modify 97ea239d9SPierre Ossman * it under the terms of the GNU General Public License version 2 as 107ea239d9SPierre Ossman * published by the Free Software Foundation. 117ea239d9SPierre Ossman */ 127ea239d9SPierre Ossman 137ea239d9SPierre Ossman #include <linux/err.h> 145a0e3ad6STejun Heo #include <linux/slab.h> 150205a904SPaul Gortmaker #include <linux/stat.h> 167ea239d9SPierre Ossman 177ea239d9SPierre Ossman #include <linux/mmc/host.h> 187ea239d9SPierre Ossman #include <linux/mmc/card.h> 197ea239d9SPierre Ossman #include <linux/mmc/mmc.h> 207ea239d9SPierre Ossman 217ea239d9SPierre Ossman #include "core.h" 224101c16aSPierre Ossman #include "bus.h" 237ea239d9SPierre Ossman #include "mmc_ops.h" 244c4cb171SPhilip Rakity #include "sd_ops.h" 257ea239d9SPierre Ossman 267ea239d9SPierre Ossman static const unsigned int tran_exp[] = { 277ea239d9SPierre Ossman 10000, 100000, 1000000, 10000000, 287ea239d9SPierre Ossman 0, 0, 0, 0 297ea239d9SPierre Ossman }; 307ea239d9SPierre Ossman 317ea239d9SPierre Ossman static const unsigned char tran_mant[] = { 327ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 337ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 347ea239d9SPierre Ossman }; 357ea239d9SPierre Ossman 367ea239d9SPierre Ossman static const unsigned int tacc_exp[] = { 377ea239d9SPierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 387ea239d9SPierre Ossman }; 397ea239d9SPierre Ossman 407ea239d9SPierre Ossman static const unsigned int tacc_mant[] = { 417ea239d9SPierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 427ea239d9SPierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 437ea239d9SPierre Ossman }; 447ea239d9SPierre Ossman 457ea239d9SPierre Ossman #define UNSTUFF_BITS(resp,start,size) \ 467ea239d9SPierre Ossman ({ \ 477ea239d9SPierre Ossman const int __size = size; \ 487ea239d9SPierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 497ea239d9SPierre Ossman const int __off = 3 - ((start) / 32); \ 507ea239d9SPierre Ossman const int __shft = (start) & 31; \ 517ea239d9SPierre Ossman u32 __res; \ 527ea239d9SPierre Ossman \ 537ea239d9SPierre Ossman __res = resp[__off] >> __shft; \ 547ea239d9SPierre Ossman if (__size + __shft > 32) \ 557ea239d9SPierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 567ea239d9SPierre Ossman __res & __mask; \ 577ea239d9SPierre Ossman }) 587ea239d9SPierre Ossman 597ea239d9SPierre Ossman /* 607ea239d9SPierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 617ea239d9SPierre Ossman */ 62bd766312SPierre Ossman static int mmc_decode_cid(struct mmc_card *card) 637ea239d9SPierre Ossman { 647ea239d9SPierre Ossman u32 *resp = card->raw_cid; 657ea239d9SPierre Ossman 667ea239d9SPierre Ossman /* 677ea239d9SPierre Ossman * The selection of the format here is based upon published 687ea239d9SPierre Ossman * specs from sandisk and from what people have reported. 697ea239d9SPierre Ossman */ 707ea239d9SPierre Ossman switch (card->csd.mmca_vsn) { 717ea239d9SPierre Ossman case 0: /* MMC v1.0 - v1.2 */ 727ea239d9SPierre Ossman case 1: /* MMC v1.4 */ 737ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 104, 24); 747ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 757ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 767ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 777ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 787ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 797ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 807ea239d9SPierre Ossman card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8); 817ea239d9SPierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4); 827ea239d9SPierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4); 837ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 24); 847ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 857ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 867ea239d9SPierre Ossman break; 877ea239d9SPierre Ossman 887ea239d9SPierre Ossman case 2: /* MMC v2.0 - v2.2 */ 897ea239d9SPierre Ossman case 3: /* MMC v3.1 - v3.3 */ 907ea239d9SPierre Ossman case 4: /* MMC v4 */ 917ea239d9SPierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 927ea239d9SPierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 937ea239d9SPierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 947ea239d9SPierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 957ea239d9SPierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 967ea239d9SPierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 977ea239d9SPierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 987ea239d9SPierre Ossman card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8); 997ea239d9SPierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 16, 32); 1007ea239d9SPierre Ossman card->cid.month = UNSTUFF_BITS(resp, 12, 4); 1017ea239d9SPierre Ossman card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997; 1027ea239d9SPierre Ossman break; 1037ea239d9SPierre Ossman 1047ea239d9SPierre Ossman default: 105a3c76eb9SGirish K S pr_err("%s: card has unknown MMCA version %d\n", 1067ea239d9SPierre Ossman mmc_hostname(card->host), card->csd.mmca_vsn); 107bd766312SPierre Ossman return -EINVAL; 1087ea239d9SPierre Ossman } 109bd766312SPierre Ossman 110bd766312SPierre Ossman return 0; 1117ea239d9SPierre Ossman } 1127ea239d9SPierre Ossman 113dfe86cbaSAdrian Hunter static void mmc_set_erase_size(struct mmc_card *card) 114dfe86cbaSAdrian Hunter { 115dfe86cbaSAdrian Hunter if (card->ext_csd.erase_group_def & 1) 116dfe86cbaSAdrian Hunter card->erase_size = card->ext_csd.hc_erase_size; 117dfe86cbaSAdrian Hunter else 118dfe86cbaSAdrian Hunter card->erase_size = card->csd.erase_size; 119dfe86cbaSAdrian Hunter 120dfe86cbaSAdrian Hunter mmc_init_erase(card); 121dfe86cbaSAdrian Hunter } 122dfe86cbaSAdrian Hunter 1237ea239d9SPierre Ossman /* 1247ea239d9SPierre Ossman * Given a 128-bit response, decode to our card CSD structure. 1257ea239d9SPierre Ossman */ 126bd766312SPierre Ossman static int mmc_decode_csd(struct mmc_card *card) 1277ea239d9SPierre Ossman { 1287ea239d9SPierre Ossman struct mmc_csd *csd = &card->csd; 129dfe86cbaSAdrian Hunter unsigned int e, m, a, b; 1307ea239d9SPierre Ossman u32 *resp = card->raw_csd; 1317ea239d9SPierre Ossman 1327ea239d9SPierre Ossman /* 1337ea239d9SPierre Ossman * We only understand CSD structure v1.1 and v1.2. 1347ea239d9SPierre Ossman * v1.2 has extra information in bits 15, 11 and 10. 1356da24b78SKyungmin Park * We also support eMMC v4.4 & v4.41. 1367ea239d9SPierre Ossman */ 1376da24b78SKyungmin Park csd->structure = UNSTUFF_BITS(resp, 126, 2); 1386da24b78SKyungmin Park if (csd->structure == 0) { 139a3c76eb9SGirish K S pr_err("%s: unrecognised CSD structure version %d\n", 1406da24b78SKyungmin Park mmc_hostname(card->host), csd->structure); 141bd766312SPierre Ossman return -EINVAL; 1427ea239d9SPierre Ossman } 1437ea239d9SPierre Ossman 1447ea239d9SPierre Ossman csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4); 1457ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1467ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1477ea239d9SPierre Ossman csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; 1487ea239d9SPierre Ossman csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1497ea239d9SPierre Ossman 1507ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1517ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1527ea239d9SPierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1537ea239d9SPierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1547ea239d9SPierre Ossman 1557ea239d9SPierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1567ea239d9SPierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1577ea239d9SPierre Ossman csd->capacity = (1 + m) << (e + 2); 1587ea239d9SPierre Ossman 1597ea239d9SPierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1607ea239d9SPierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1617ea239d9SPierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1627ea239d9SPierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1637ea239d9SPierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1647ea239d9SPierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1657ea239d9SPierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 166bd766312SPierre Ossman 167dfe86cbaSAdrian Hunter if (csd->write_blkbits >= 9) { 168dfe86cbaSAdrian Hunter a = UNSTUFF_BITS(resp, 42, 5); 169dfe86cbaSAdrian Hunter b = UNSTUFF_BITS(resp, 37, 5); 170dfe86cbaSAdrian Hunter csd->erase_size = (a + 1) * (b + 1); 171dfe86cbaSAdrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 172dfe86cbaSAdrian Hunter } 173dfe86cbaSAdrian Hunter 174bd766312SPierre Ossman return 0; 1757ea239d9SPierre Ossman } 1767ea239d9SPierre Ossman 1777ea239d9SPierre Ossman /* 17808ee80ccSPhilip Rakity * Read extended CSD. 1797ea239d9SPierre Ossman */ 18008ee80ccSPhilip Rakity static int mmc_get_ext_csd(struct mmc_card *card, u8 **new_ext_csd) 1817ea239d9SPierre Ossman { 1827ea239d9SPierre Ossman int err; 1837ea239d9SPierre Ossman u8 *ext_csd; 1847ea239d9SPierre Ossman 1857ea239d9SPierre Ossman BUG_ON(!card); 18608ee80ccSPhilip Rakity BUG_ON(!new_ext_csd); 18708ee80ccSPhilip Rakity 18808ee80ccSPhilip Rakity *new_ext_csd = NULL; 1897ea239d9SPierre Ossman 1907ea239d9SPierre Ossman if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 19117b0429dSPierre Ossman return 0; 1927ea239d9SPierre Ossman 1937ea239d9SPierre Ossman /* 1947ea239d9SPierre Ossman * As the ext_csd is so large and mostly unused, we don't store the 1957ea239d9SPierre Ossman * raw block in mmc_card. 1967ea239d9SPierre Ossman */ 1977ea239d9SPierre Ossman ext_csd = kmalloc(512, GFP_KERNEL); 1987ea239d9SPierre Ossman if (!ext_csd) { 199a3c76eb9SGirish K S pr_err("%s: could not allocate a buffer to " 200adf66a0dSPierre Ossman "receive the ext_csd.\n", mmc_hostname(card->host)); 20117b0429dSPierre Ossman return -ENOMEM; 2027ea239d9SPierre Ossman } 2037ea239d9SPierre Ossman 2047ea239d9SPierre Ossman err = mmc_send_ext_csd(card, ext_csd); 20517b0429dSPierre Ossman if (err) { 20608ee80ccSPhilip Rakity kfree(ext_csd); 20708ee80ccSPhilip Rakity *new_ext_csd = NULL; 20808ee80ccSPhilip Rakity 209d08ebeddSWolfgang Muees /* If the host or the card can't do the switch, 210d08ebeddSWolfgang Muees * fail more gracefully. */ 211d08ebeddSWolfgang Muees if ((err != -EINVAL) 212d08ebeddSWolfgang Muees && (err != -ENOSYS) 213d08ebeddSWolfgang Muees && (err != -EFAULT)) 21408ee80ccSPhilip Rakity return err; 215adf66a0dSPierre Ossman 216adf66a0dSPierre Ossman /* 2177ea239d9SPierre Ossman * High capacity cards should have this "magic" size 2187ea239d9SPierre Ossman * stored in their CSD. 2197ea239d9SPierre Ossman */ 2207ea239d9SPierre Ossman if (card->csd.capacity == (4096 * 512)) { 221a3c76eb9SGirish K S pr_err("%s: unable to read EXT_CSD " 2227ea239d9SPierre Ossman "on a possible high capacity card. " 2237ea239d9SPierre Ossman "Card will be ignored.\n", 2247ea239d9SPierre Ossman mmc_hostname(card->host)); 2257ea239d9SPierre Ossman } else { 226a3c76eb9SGirish K S pr_warning("%s: unable to read " 2277ea239d9SPierre Ossman "EXT_CSD, performance might " 2287ea239d9SPierre Ossman "suffer.\n", 2297ea239d9SPierre Ossman mmc_hostname(card->host)); 23017b0429dSPierre Ossman err = 0; 2317ea239d9SPierre Ossman } 23208ee80ccSPhilip Rakity } else 23308ee80ccSPhilip Rakity *new_ext_csd = ext_csd; 234adf66a0dSPierre Ossman 23508ee80ccSPhilip Rakity return err; 2367ea239d9SPierre Ossman } 2377ea239d9SPierre Ossman 23808ee80ccSPhilip Rakity /* 23908ee80ccSPhilip Rakity * Decode extended CSD. 24008ee80ccSPhilip Rakity */ 24108ee80ccSPhilip Rakity static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd) 24208ee80ccSPhilip Rakity { 243e0c368d5SNamjae Jeon int err = 0, idx; 244e0c368d5SNamjae Jeon unsigned int part_size; 245e0c368d5SNamjae Jeon u8 hc_erase_grp_sz = 0, hc_wp_grp_sz = 0; 24608ee80ccSPhilip Rakity 24708ee80ccSPhilip Rakity BUG_ON(!card); 24808ee80ccSPhilip Rakity 24908ee80ccSPhilip Rakity if (!ext_csd) 25008ee80ccSPhilip Rakity return 0; 25108ee80ccSPhilip Rakity 2526da24b78SKyungmin Park /* Version is coded in the CSD_STRUCTURE byte in the EXT_CSD register */ 253f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure = ext_csd[EXT_CSD_STRUCTURE]; 2546da24b78SKyungmin Park if (card->csd.structure == 3) { 255f39b2dd9SPhilip Rakity if (card->ext_csd.raw_ext_csd_structure > 2) { 256a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD structure " 2578fdd8521SPierre Ossman "version %d\n", mmc_hostname(card->host), 258f39b2dd9SPhilip Rakity card->ext_csd.raw_ext_csd_structure); 2596da24b78SKyungmin Park err = -EINVAL; 2606da24b78SKyungmin Park goto out; 2616da24b78SKyungmin Park } 2626da24b78SKyungmin Park } 2636da24b78SKyungmin Park 2646da24b78SKyungmin Park card->ext_csd.rev = ext_csd[EXT_CSD_REV]; 26538ca2850SKyungmin Park if (card->ext_csd.rev > 6) { 266a3c76eb9SGirish K S pr_err("%s: unrecognised EXT_CSD revision %d\n", 2676da24b78SKyungmin Park mmc_hostname(card->host), card->ext_csd.rev); 26800cedfa6SFlorin Malita err = -EINVAL; 26900cedfa6SFlorin Malita goto out; 270d7604d76SPierre Ossman } 271d7604d76SPierre Ossman 272f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[0] = ext_csd[EXT_CSD_SEC_CNT + 0]; 273f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[1] = ext_csd[EXT_CSD_SEC_CNT + 1]; 274f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[2] = ext_csd[EXT_CSD_SEC_CNT + 2]; 275f39b2dd9SPhilip Rakity card->ext_csd.raw_sectors[3] = ext_csd[EXT_CSD_SEC_CNT + 3]; 276b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 2) { 2777ea239d9SPierre Ossman card->ext_csd.sectors = 2787ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 0] << 0 | 2797ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 1] << 8 | 2807ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 2] << 16 | 2817ea239d9SPierre Ossman ext_csd[EXT_CSD_SEC_CNT + 3] << 24; 282fc8a0985SHanumath Prasad 283fc8a0985SHanumath Prasad /* Cards with density > 2GiB are sector addressed */ 284fc8a0985SHanumath Prasad if (card->ext_csd.sectors > (2u * 1024 * 1024 * 1024) / 512) 2857ea239d9SPierre Ossman mmc_card_set_blockaddr(card); 286d7604d76SPierre Ossman } 287f39b2dd9SPhilip Rakity card->ext_csd.raw_card_type = ext_csd[EXT_CSD_CARD_TYPE]; 2887198f3c9SAdrian Hunter switch (ext_csd[EXT_CSD_CARD_TYPE] & EXT_CSD_CARD_TYPE_MASK) { 289a4924c71SGirish K S case EXT_CSD_CARD_TYPE_SDR_ALL: 290a4924c71SGirish K S case EXT_CSD_CARD_TYPE_SDR_ALL_DDR_1_8V: 291a4924c71SGirish K S case EXT_CSD_CARD_TYPE_SDR_ALL_DDR_1_2V: 292a4924c71SGirish K S case EXT_CSD_CARD_TYPE_SDR_ALL_DDR_52: 293a4924c71SGirish K S card->ext_csd.hs_max_dtr = 200000000; 294a4924c71SGirish K S card->ext_csd.card_type = EXT_CSD_CARD_TYPE_SDR_200; 295a4924c71SGirish K S break; 296a4924c71SGirish K S case EXT_CSD_CARD_TYPE_SDR_1_2V_ALL: 297a4924c71SGirish K S case EXT_CSD_CARD_TYPE_SDR_1_2V_DDR_1_8V: 298a4924c71SGirish K S case EXT_CSD_CARD_TYPE_SDR_1_2V_DDR_1_2V: 299a4924c71SGirish K S case EXT_CSD_CARD_TYPE_SDR_1_2V_DDR_52: 300a4924c71SGirish K S card->ext_csd.hs_max_dtr = 200000000; 301a4924c71SGirish K S card->ext_csd.card_type = EXT_CSD_CARD_TYPE_SDR_1_2V; 302a4924c71SGirish K S break; 303a4924c71SGirish K S case EXT_CSD_CARD_TYPE_SDR_1_8V_ALL: 304a4924c71SGirish K S case EXT_CSD_CARD_TYPE_SDR_1_8V_DDR_1_8V: 305a4924c71SGirish K S case EXT_CSD_CARD_TYPE_SDR_1_8V_DDR_1_2V: 306a4924c71SGirish K S case EXT_CSD_CARD_TYPE_SDR_1_8V_DDR_52: 307a4924c71SGirish K S card->ext_csd.hs_max_dtr = 200000000; 308a4924c71SGirish K S card->ext_csd.card_type = EXT_CSD_CARD_TYPE_SDR_1_8V; 309a4924c71SGirish K S break; 310dfc13e84SHanumath Prasad case EXT_CSD_CARD_TYPE_DDR_52 | EXT_CSD_CARD_TYPE_52 | 311dfc13e84SHanumath Prasad EXT_CSD_CARD_TYPE_26: 312dfc13e84SHanumath Prasad card->ext_csd.hs_max_dtr = 52000000; 313dfc13e84SHanumath Prasad card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_52; 314dfc13e84SHanumath Prasad break; 315dfc13e84SHanumath Prasad case EXT_CSD_CARD_TYPE_DDR_1_2V | EXT_CSD_CARD_TYPE_52 | 316dfc13e84SHanumath Prasad EXT_CSD_CARD_TYPE_26: 317dfc13e84SHanumath Prasad card->ext_csd.hs_max_dtr = 52000000; 318dfc13e84SHanumath Prasad card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_1_2V; 319dfc13e84SHanumath Prasad break; 320dfc13e84SHanumath Prasad case EXT_CSD_CARD_TYPE_DDR_1_8V | EXT_CSD_CARD_TYPE_52 | 321dfc13e84SHanumath Prasad EXT_CSD_CARD_TYPE_26: 322dfc13e84SHanumath Prasad card->ext_csd.hs_max_dtr = 52000000; 323dfc13e84SHanumath Prasad card->ext_csd.card_type = EXT_CSD_CARD_TYPE_DDR_1_8V; 324dfc13e84SHanumath Prasad break; 3257ea239d9SPierre Ossman case EXT_CSD_CARD_TYPE_52 | EXT_CSD_CARD_TYPE_26: 3267ea239d9SPierre Ossman card->ext_csd.hs_max_dtr = 52000000; 3277ea239d9SPierre Ossman break; 3287ea239d9SPierre Ossman case EXT_CSD_CARD_TYPE_26: 3297ea239d9SPierre Ossman card->ext_csd.hs_max_dtr = 26000000; 3307ea239d9SPierre Ossman break; 3317ea239d9SPierre Ossman default: 3327ea239d9SPierre Ossman /* MMC v4 spec says this cannot happen */ 333a3c76eb9SGirish K S pr_warning("%s: card is mmc v4 but doesn't " 3347ea239d9SPierre Ossman "support any high-speed modes.\n", 3357ea239d9SPierre Ossman mmc_hostname(card->host)); 3367ea239d9SPierre Ossman } 3377ea239d9SPierre Ossman 338f39b2dd9SPhilip Rakity card->ext_csd.raw_s_a_timeout = ext_csd[EXT_CSD_S_A_TIMEOUT]; 339f39b2dd9SPhilip Rakity card->ext_csd.raw_erase_timeout_mult = 340f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 341f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_grp_size = 342f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 343b1ebe384SJarkko Lavinen if (card->ext_csd.rev >= 3) { 344b1ebe384SJarkko Lavinen u8 sa_shift = ext_csd[EXT_CSD_S_A_TIMEOUT]; 345371a689fSAndrei Warkentin card->ext_csd.part_config = ext_csd[EXT_CSD_PART_CONFIG]; 346371a689fSAndrei Warkentin 347371a689fSAndrei Warkentin /* EXT_CSD value is in units of 10ms, but we store in ms */ 348371a689fSAndrei Warkentin card->ext_csd.part_time = 10 * ext_csd[EXT_CSD_PART_SWITCH_TIME]; 349b1ebe384SJarkko Lavinen 350b1ebe384SJarkko Lavinen /* Sleep / awake timeout in 100ns units */ 351b1ebe384SJarkko Lavinen if (sa_shift > 0 && sa_shift <= 0x17) 352b1ebe384SJarkko Lavinen card->ext_csd.sa_timeout = 353b1ebe384SJarkko Lavinen 1 << ext_csd[EXT_CSD_S_A_TIMEOUT]; 354dfe86cbaSAdrian Hunter card->ext_csd.erase_group_def = 355dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_GROUP_DEF]; 356dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_timeout = 300 * 357dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; 358dfe86cbaSAdrian Hunter card->ext_csd.hc_erase_size = 359dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; 360f4c5522bSAndrei Warkentin 361f4c5522bSAndrei Warkentin card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; 362371a689fSAndrei Warkentin 363371a689fSAndrei Warkentin /* 364371a689fSAndrei Warkentin * There are two boot regions of equal size, defined in 365371a689fSAndrei Warkentin * multiples of 128K. 366371a689fSAndrei Warkentin */ 367e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_BOOT_MULT] && mmc_boot_partition_access(card->host)) { 368e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_BOOT_PARTITION; idx++) { 369e0c368d5SNamjae Jeon part_size = ext_csd[EXT_CSD_BOOT_MULT] << 17; 370e0c368d5SNamjae Jeon mmc_part_add(card, part_size, 371e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_BOOT0 + idx, 372add710eaSJohan Rudholm "boot%d", idx, true, 373add710eaSJohan Rudholm MMC_BLK_DATA_AREA_BOOT); 374e0c368d5SNamjae Jeon } 375e0c368d5SNamjae Jeon } 376b1ebe384SJarkko Lavinen } 377b1ebe384SJarkko Lavinen 378f39b2dd9SPhilip Rakity card->ext_csd.raw_hc_erase_gap_size = 379dd13b4edSJurgen Heeks ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 380f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_trim_mult = 381f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_TRIM_MULT]; 382f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_erase_mult = 383f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_ERASE_MULT]; 384f39b2dd9SPhilip Rakity card->ext_csd.raw_sec_feature_support = 385f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 386f39b2dd9SPhilip Rakity card->ext_csd.raw_trim_mult = 387f39b2dd9SPhilip Rakity ext_csd[EXT_CSD_TRIM_MULT]; 388dfe86cbaSAdrian Hunter if (card->ext_csd.rev >= 4) { 389709de99dSChuanxiao Dong /* 390709de99dSChuanxiao Dong * Enhanced area feature support -- check whether the eMMC 391709de99dSChuanxiao Dong * card has the Enhanced area enabled. If so, export enhanced 392709de99dSChuanxiao Dong * area offset and size to user by adding sysfs interface. 393709de99dSChuanxiao Dong */ 3945238acbeSAndrei Warkentin card->ext_csd.raw_partition_support = ext_csd[EXT_CSD_PARTITION_SUPPORT]; 395709de99dSChuanxiao Dong if ((ext_csd[EXT_CSD_PARTITION_SUPPORT] & 0x2) && 396709de99dSChuanxiao Dong (ext_csd[EXT_CSD_PARTITION_ATTRIBUTE] & 0x1)) { 397e0c368d5SNamjae Jeon hc_erase_grp_sz = 398709de99dSChuanxiao Dong ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 399e0c368d5SNamjae Jeon hc_wp_grp_sz = 400709de99dSChuanxiao Dong ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 401709de99dSChuanxiao Dong 402709de99dSChuanxiao Dong card->ext_csd.enhanced_area_en = 1; 403709de99dSChuanxiao Dong /* 404709de99dSChuanxiao Dong * calculate the enhanced data area offset, in bytes 405709de99dSChuanxiao Dong */ 406709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = 407709de99dSChuanxiao Dong (ext_csd[139] << 24) + (ext_csd[138] << 16) + 408709de99dSChuanxiao Dong (ext_csd[137] << 8) + ext_csd[136]; 409709de99dSChuanxiao Dong if (mmc_card_blockaddr(card)) 410709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset <<= 9; 411709de99dSChuanxiao Dong /* 412709de99dSChuanxiao Dong * calculate the enhanced data area size, in kilobytes 413709de99dSChuanxiao Dong */ 414709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = 415709de99dSChuanxiao Dong (ext_csd[142] << 16) + (ext_csd[141] << 8) + 416709de99dSChuanxiao Dong ext_csd[140]; 417709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size *= 418709de99dSChuanxiao Dong (size_t)(hc_erase_grp_sz * hc_wp_grp_sz); 419709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size <<= 9; 420709de99dSChuanxiao Dong } else { 421709de99dSChuanxiao Dong /* 422709de99dSChuanxiao Dong * If the enhanced area is not enabled, disable these 423709de99dSChuanxiao Dong * device attributes. 424709de99dSChuanxiao Dong */ 425709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 426709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 427709de99dSChuanxiao Dong } 428e0c368d5SNamjae Jeon 429e0c368d5SNamjae Jeon /* 430e0c368d5SNamjae Jeon * General purpose partition feature support -- 431e0c368d5SNamjae Jeon * If ext_csd has the size of general purpose partitions, 432e0c368d5SNamjae Jeon * set size, part_cfg, partition name in mmc_part. 433e0c368d5SNamjae Jeon */ 434e0c368d5SNamjae Jeon if (ext_csd[EXT_CSD_PARTITION_SUPPORT] & 435e0c368d5SNamjae Jeon EXT_CSD_PART_SUPPORT_PART_EN) { 436e0c368d5SNamjae Jeon if (card->ext_csd.enhanced_area_en != 1) { 437e0c368d5SNamjae Jeon hc_erase_grp_sz = 438e0c368d5SNamjae Jeon ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]; 439e0c368d5SNamjae Jeon hc_wp_grp_sz = 440e0c368d5SNamjae Jeon ext_csd[EXT_CSD_HC_WP_GRP_SIZE]; 441e0c368d5SNamjae Jeon 442e0c368d5SNamjae Jeon card->ext_csd.enhanced_area_en = 1; 443e0c368d5SNamjae Jeon } 444e0c368d5SNamjae Jeon 445e0c368d5SNamjae Jeon for (idx = 0; idx < MMC_NUM_GP_PARTITION; idx++) { 446e0c368d5SNamjae Jeon if (!ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3] && 447e0c368d5SNamjae Jeon !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] && 448e0c368d5SNamjae Jeon !ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2]) 449e0c368d5SNamjae Jeon continue; 450e0c368d5SNamjae Jeon part_size = 451e0c368d5SNamjae Jeon (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 2] 452e0c368d5SNamjae Jeon << 16) + 453e0c368d5SNamjae Jeon (ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3 + 1] 454e0c368d5SNamjae Jeon << 8) + 455e0c368d5SNamjae Jeon ext_csd[EXT_CSD_GP_SIZE_MULT + idx * 3]; 456e0c368d5SNamjae Jeon part_size *= (size_t)(hc_erase_grp_sz * 457e0c368d5SNamjae Jeon hc_wp_grp_sz); 458e0c368d5SNamjae Jeon mmc_part_add(card, part_size << 19, 459e0c368d5SNamjae Jeon EXT_CSD_PART_CONFIG_ACC_GP0 + idx, 460add710eaSJohan Rudholm "gp%d", idx, false, 461add710eaSJohan Rudholm MMC_BLK_DATA_AREA_GP); 462e0c368d5SNamjae Jeon } 463e0c368d5SNamjae Jeon } 464dfe86cbaSAdrian Hunter card->ext_csd.sec_trim_mult = 465dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_TRIM_MULT]; 466dfe86cbaSAdrian Hunter card->ext_csd.sec_erase_mult = 467dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_ERASE_MULT]; 468dfe86cbaSAdrian Hunter card->ext_csd.sec_feature_support = 469dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]; 470dfe86cbaSAdrian Hunter card->ext_csd.trim_timeout = 300 * 471dfe86cbaSAdrian Hunter ext_csd[EXT_CSD_TRIM_MULT]; 472add710eaSJohan Rudholm 473add710eaSJohan Rudholm /* 474add710eaSJohan Rudholm * Note that the call to mmc_part_add above defaults to read 475add710eaSJohan Rudholm * only. If this default assumption is changed, the call must 476add710eaSJohan Rudholm * take into account the value of boot_locked below. 477add710eaSJohan Rudholm */ 478add710eaSJohan Rudholm card->ext_csd.boot_ro_lock = ext_csd[EXT_CSD_BOOT_WP]; 479add710eaSJohan Rudholm card->ext_csd.boot_ro_lockable = true; 480dfe86cbaSAdrian Hunter } 481dfe86cbaSAdrian Hunter 482b2499518SAdrian Hunter if (card->ext_csd.rev >= 5) { 483eb0d8f13SJaehoon Chung /* check whether the eMMC card supports HPI */ 484eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x1) { 485eb0d8f13SJaehoon Chung card->ext_csd.hpi = 1; 486eb0d8f13SJaehoon Chung if (ext_csd[EXT_CSD_HPI_FEATURES] & 0x2) 487eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_STOP_TRANSMISSION; 488eb0d8f13SJaehoon Chung else 489eb0d8f13SJaehoon Chung card->ext_csd.hpi_cmd = MMC_SEND_STATUS; 490eb0d8f13SJaehoon Chung /* 491eb0d8f13SJaehoon Chung * Indicate the maximum timeout to close 492eb0d8f13SJaehoon Chung * a command interrupted by HPI 493eb0d8f13SJaehoon Chung */ 494eb0d8f13SJaehoon Chung card->ext_csd.out_of_int_time = 495eb0d8f13SJaehoon Chung ext_csd[EXT_CSD_OUT_OF_INTERRUPT_TIME] * 10; 496eb0d8f13SJaehoon Chung } 497eb0d8f13SJaehoon Chung 498f4c5522bSAndrei Warkentin card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; 499b2499518SAdrian Hunter card->ext_csd.rst_n_function = ext_csd[EXT_CSD_RST_N_FUNCTION]; 500b2499518SAdrian Hunter } 501f4c5522bSAndrei Warkentin 5025238acbeSAndrei Warkentin card->ext_csd.raw_erased_mem_count = ext_csd[EXT_CSD_ERASED_MEM_CONT]; 503dfe86cbaSAdrian Hunter if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) 504dfe86cbaSAdrian Hunter card->erased_byte = 0xFF; 505dfe86cbaSAdrian Hunter else 506dfe86cbaSAdrian Hunter card->erased_byte = 0x0; 507dfe86cbaSAdrian Hunter 508336c716aSSeungwon Jeon /* eMMC v4.5 or later */ 509bec8726aSGirish K S if (card->ext_csd.rev >= 6) { 510336c716aSSeungwon Jeon card->ext_csd.feature_support |= MMC_DISCARD_FEATURE; 511336c716aSSeungwon Jeon 512b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time = 10 * 513b23cf0bdSSeungwon Jeon ext_csd[EXT_CSD_GENERIC_CMD6_TIME]; 514bec8726aSGirish K S card->ext_csd.power_off_longtime = 10 * 515bec8726aSGirish K S ext_csd[EXT_CSD_POWER_OFF_LONG_TIME]; 516b23cf0bdSSeungwon Jeon 517881d1c25SSeungwon Jeon card->ext_csd.cache_size = 518881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 0] << 0 | 519881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 1] << 8 | 520881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 2] << 16 | 521881d1c25SSeungwon Jeon ext_csd[EXT_CSD_CACHE_SIZE + 3] << 24; 5224265900eSSaugata Das 5234265900eSSaugata Das if (ext_csd[EXT_CSD_DATA_SECTOR_SIZE] == 1) 5244265900eSSaugata Das card->ext_csd.data_sector_size = 4096; 5254265900eSSaugata Das else 5264265900eSSaugata Das card->ext_csd.data_sector_size = 512; 5274265900eSSaugata Das 5284265900eSSaugata Das if ((ext_csd[EXT_CSD_DATA_TAG_SUPPORT] & 1) && 5294265900eSSaugata Das (ext_csd[EXT_CSD_TAG_UNIT_SIZE] <= 8)) { 5304265900eSSaugata Das card->ext_csd.data_tag_unit_size = 5314265900eSSaugata Das ((unsigned int) 1 << ext_csd[EXT_CSD_TAG_UNIT_SIZE]) * 5324265900eSSaugata Das (card->ext_csd.data_sector_size); 5334265900eSSaugata Das } else { 5344265900eSSaugata Das card->ext_csd.data_tag_unit_size = 0; 5354265900eSSaugata Das } 536336c716aSSeungwon Jeon } 537881d1c25SSeungwon Jeon 5387ea239d9SPierre Ossman out: 53908ee80ccSPhilip Rakity return err; 54008ee80ccSPhilip Rakity } 5417ea239d9SPierre Ossman 54208ee80ccSPhilip Rakity static inline void mmc_free_ext_csd(u8 *ext_csd) 54308ee80ccSPhilip Rakity { 54408ee80ccSPhilip Rakity kfree(ext_csd); 54508ee80ccSPhilip Rakity } 54608ee80ccSPhilip Rakity 54708ee80ccSPhilip Rakity 548f39b2dd9SPhilip Rakity static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width) 54908ee80ccSPhilip Rakity { 55008ee80ccSPhilip Rakity u8 *bw_ext_csd; 55108ee80ccSPhilip Rakity int err; 55208ee80ccSPhilip Rakity 553f39b2dd9SPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 554f39b2dd9SPhilip Rakity return 0; 55508ee80ccSPhilip Rakity 556f39b2dd9SPhilip Rakity err = mmc_get_ext_csd(card, &bw_ext_csd); 557f39b2dd9SPhilip Rakity 558f39b2dd9SPhilip Rakity if (err || bw_ext_csd == NULL) { 55908ee80ccSPhilip Rakity if (bus_width != MMC_BUS_WIDTH_1) 56008ee80ccSPhilip Rakity err = -EINVAL; 56108ee80ccSPhilip Rakity goto out; 56208ee80ccSPhilip Rakity } 56308ee80ccSPhilip Rakity 56408ee80ccSPhilip Rakity if (bus_width == MMC_BUS_WIDTH_1) 56508ee80ccSPhilip Rakity goto out; 56608ee80ccSPhilip Rakity 56708ee80ccSPhilip Rakity /* only compare read only fields */ 568dd13b4edSJurgen Heeks err = !((card->ext_csd.raw_partition_support == 56908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_PARTITION_SUPPORT]) && 570f39b2dd9SPhilip Rakity (card->ext_csd.raw_erased_mem_count == 57108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASED_MEM_CONT]) && 572f39b2dd9SPhilip Rakity (card->ext_csd.rev == 57308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_REV]) && 574f39b2dd9SPhilip Rakity (card->ext_csd.raw_ext_csd_structure == 57508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_STRUCTURE]) && 576f39b2dd9SPhilip Rakity (card->ext_csd.raw_card_type == 57708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_CARD_TYPE]) && 578f39b2dd9SPhilip Rakity (card->ext_csd.raw_s_a_timeout == 57908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_S_A_TIMEOUT]) && 580f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_gap_size == 58108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_WP_GRP_SIZE]) && 582f39b2dd9SPhilip Rakity (card->ext_csd.raw_erase_timeout_mult == 58308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]) && 584f39b2dd9SPhilip Rakity (card->ext_csd.raw_hc_erase_grp_size == 58508ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE]) && 586f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_trim_mult == 58708ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_TRIM_MULT]) && 588f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_erase_mult == 58908ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_ERASE_MULT]) && 590f39b2dd9SPhilip Rakity (card->ext_csd.raw_sec_feature_support == 59108ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_SEC_FEATURE_SUPPORT]) && 592f39b2dd9SPhilip Rakity (card->ext_csd.raw_trim_mult == 59308ee80ccSPhilip Rakity bw_ext_csd[EXT_CSD_TRIM_MULT]) && 594f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[0] == 595f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 0]) && 596f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[1] == 597f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 1]) && 598f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[2] == 599f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 2]) && 600f39b2dd9SPhilip Rakity (card->ext_csd.raw_sectors[3] == 601f39b2dd9SPhilip Rakity bw_ext_csd[EXT_CSD_SEC_CNT + 3])); 60208ee80ccSPhilip Rakity if (err) 60308ee80ccSPhilip Rakity err = -EINVAL; 60408ee80ccSPhilip Rakity 60508ee80ccSPhilip Rakity out: 60608ee80ccSPhilip Rakity mmc_free_ext_csd(bw_ext_csd); 6077ea239d9SPierre Ossman return err; 6087ea239d9SPierre Ossman } 6097ea239d9SPierre Ossman 61051ec92e2SPierre Ossman MMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 61151ec92e2SPierre Ossman card->raw_cid[2], card->raw_cid[3]); 61251ec92e2SPierre Ossman MMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 61351ec92e2SPierre Ossman card->raw_csd[2], card->raw_csd[3]); 61451ec92e2SPierre Ossman MMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 615dfe86cbaSAdrian Hunter MMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 616dfe86cbaSAdrian Hunter MMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 61751ec92e2SPierre Ossman MMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); 61851ec92e2SPierre Ossman MMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 61951ec92e2SPierre Ossman MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 62051ec92e2SPierre Ossman MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 62151ec92e2SPierre Ossman MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 62251ec92e2SPierre Ossman MMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 623709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_offset, "%llu\n", 624709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset); 625709de99dSChuanxiao Dong MMC_DEV_ATTR(enhanced_area_size, "%u\n", card->ext_csd.enhanced_area_size); 62651ec92e2SPierre Ossman 62751ec92e2SPierre Ossman static struct attribute *mmc_std_attrs[] = { 62851ec92e2SPierre Ossman &dev_attr_cid.attr, 62951ec92e2SPierre Ossman &dev_attr_csd.attr, 63051ec92e2SPierre Ossman &dev_attr_date.attr, 631dfe86cbaSAdrian Hunter &dev_attr_erase_size.attr, 632dfe86cbaSAdrian Hunter &dev_attr_preferred_erase_size.attr, 63351ec92e2SPierre Ossman &dev_attr_fwrev.attr, 63451ec92e2SPierre Ossman &dev_attr_hwrev.attr, 63551ec92e2SPierre Ossman &dev_attr_manfid.attr, 63651ec92e2SPierre Ossman &dev_attr_name.attr, 63751ec92e2SPierre Ossman &dev_attr_oemid.attr, 63851ec92e2SPierre Ossman &dev_attr_serial.attr, 639709de99dSChuanxiao Dong &dev_attr_enhanced_area_offset.attr, 640709de99dSChuanxiao Dong &dev_attr_enhanced_area_size.attr, 64151ec92e2SPierre Ossman NULL, 64251ec92e2SPierre Ossman }; 64351ec92e2SPierre Ossman 64451ec92e2SPierre Ossman static struct attribute_group mmc_std_attr_group = { 64551ec92e2SPierre Ossman .attrs = mmc_std_attrs, 64651ec92e2SPierre Ossman }; 64751ec92e2SPierre Ossman 648a4dbd674SDavid Brownell static const struct attribute_group *mmc_attr_groups[] = { 64951ec92e2SPierre Ossman &mmc_std_attr_group, 65051ec92e2SPierre Ossman NULL, 65151ec92e2SPierre Ossman }; 65251ec92e2SPierre Ossman 65351ec92e2SPierre Ossman static struct device_type mmc_type = { 65451ec92e2SPierre Ossman .groups = mmc_attr_groups, 65551ec92e2SPierre Ossman }; 65651ec92e2SPierre Ossman 6577ea239d9SPierre Ossman /* 658b87d8dbfSGirish K S * Select the PowerClass for the current bus width 659b87d8dbfSGirish K S * If power class is defined for 4/8 bit bus in the 660b87d8dbfSGirish K S * extended CSD register, select it by executing the 661b87d8dbfSGirish K S * mmc_switch command. 662b87d8dbfSGirish K S */ 663b87d8dbfSGirish K S static int mmc_select_powerclass(struct mmc_card *card, 664b87d8dbfSGirish K S unsigned int bus_width, u8 *ext_csd) 665b87d8dbfSGirish K S { 666b87d8dbfSGirish K S int err = 0; 667b87d8dbfSGirish K S unsigned int pwrclass_val; 668b87d8dbfSGirish K S unsigned int index = 0; 669b87d8dbfSGirish K S struct mmc_host *host; 670b87d8dbfSGirish K S 671b87d8dbfSGirish K S BUG_ON(!card); 672b87d8dbfSGirish K S 673b87d8dbfSGirish K S host = card->host; 674b87d8dbfSGirish K S BUG_ON(!host); 675b87d8dbfSGirish K S 676b87d8dbfSGirish K S if (ext_csd == NULL) 677b87d8dbfSGirish K S return 0; 678b87d8dbfSGirish K S 679b87d8dbfSGirish K S /* Power class selection is supported for versions >= 4.0 */ 680b87d8dbfSGirish K S if (card->csd.mmca_vsn < CSD_SPEC_VER_4) 681b87d8dbfSGirish K S return 0; 682b87d8dbfSGirish K S 683b87d8dbfSGirish K S /* Power class values are defined only for 4/8 bit bus */ 684b87d8dbfSGirish K S if (bus_width == EXT_CSD_BUS_WIDTH_1) 685b87d8dbfSGirish K S return 0; 686b87d8dbfSGirish K S 687b87d8dbfSGirish K S switch (1 << host->ios.vdd) { 688b87d8dbfSGirish K S case MMC_VDD_165_195: 689b87d8dbfSGirish K S if (host->ios.clock <= 26000000) 690b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_26_195; 691b87d8dbfSGirish K S else if (host->ios.clock <= 52000000) 692b87d8dbfSGirish K S index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 693b87d8dbfSGirish K S EXT_CSD_PWR_CL_52_195 : 694b87d8dbfSGirish K S EXT_CSD_PWR_CL_DDR_52_195; 695b87d8dbfSGirish K S else if (host->ios.clock <= 200000000) 696b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_200_195; 697b87d8dbfSGirish K S break; 69893fc5a47SSubhash Jadavani case MMC_VDD_27_28: 69993fc5a47SSubhash Jadavani case MMC_VDD_28_29: 70093fc5a47SSubhash Jadavani case MMC_VDD_29_30: 70193fc5a47SSubhash Jadavani case MMC_VDD_30_31: 70293fc5a47SSubhash Jadavani case MMC_VDD_31_32: 703b87d8dbfSGirish K S case MMC_VDD_32_33: 704b87d8dbfSGirish K S case MMC_VDD_33_34: 705b87d8dbfSGirish K S case MMC_VDD_34_35: 706b87d8dbfSGirish K S case MMC_VDD_35_36: 707b87d8dbfSGirish K S if (host->ios.clock <= 26000000) 708b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_26_360; 709b87d8dbfSGirish K S else if (host->ios.clock <= 52000000) 710b87d8dbfSGirish K S index = (bus_width <= EXT_CSD_BUS_WIDTH_8) ? 711b87d8dbfSGirish K S EXT_CSD_PWR_CL_52_360 : 712b87d8dbfSGirish K S EXT_CSD_PWR_CL_DDR_52_360; 713b87d8dbfSGirish K S else if (host->ios.clock <= 200000000) 714b87d8dbfSGirish K S index = EXT_CSD_PWR_CL_200_360; 715b87d8dbfSGirish K S break; 716b87d8dbfSGirish K S default: 717b87d8dbfSGirish K S pr_warning("%s: Voltage range not supported " 718b87d8dbfSGirish K S "for power class.\n", mmc_hostname(host)); 719b87d8dbfSGirish K S return -EINVAL; 720b87d8dbfSGirish K S } 721b87d8dbfSGirish K S 722b87d8dbfSGirish K S pwrclass_val = ext_csd[index]; 723b87d8dbfSGirish K S 724b87d8dbfSGirish K S if (bus_width & (EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_BUS_WIDTH_8)) 725b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_8BIT_MASK) >> 726b87d8dbfSGirish K S EXT_CSD_PWR_CL_8BIT_SHIFT; 727b87d8dbfSGirish K S else 728b87d8dbfSGirish K S pwrclass_val = (pwrclass_val & EXT_CSD_PWR_CL_4BIT_MASK) >> 729b87d8dbfSGirish K S EXT_CSD_PWR_CL_4BIT_SHIFT; 730b87d8dbfSGirish K S 731b87d8dbfSGirish K S /* If the power class is different from the default value */ 732b87d8dbfSGirish K S if (pwrclass_val > 0) { 733b87d8dbfSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 734b87d8dbfSGirish K S EXT_CSD_POWER_CLASS, 735b87d8dbfSGirish K S pwrclass_val, 73671fe3eb0SSeungwon Jeon card->ext_csd.generic_cmd6_time); 737b87d8dbfSGirish K S } 738b87d8dbfSGirish K S 739b87d8dbfSGirish K S return err; 740b87d8dbfSGirish K S } 741b87d8dbfSGirish K S 742b87d8dbfSGirish K S /* 743a4924c71SGirish K S * Selects the desired buswidth and switch to the HS200 mode 744a4924c71SGirish K S * if bus width set without error 745a4924c71SGirish K S */ 746a4924c71SGirish K S static int mmc_select_hs200(struct mmc_card *card) 747a4924c71SGirish K S { 748a4924c71SGirish K S int idx, err = 0; 749a4924c71SGirish K S struct mmc_host *host; 750a4924c71SGirish K S static unsigned ext_csd_bits[] = { 751a4924c71SGirish K S EXT_CSD_BUS_WIDTH_4, 752a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8, 753a4924c71SGirish K S }; 754a4924c71SGirish K S static unsigned bus_widths[] = { 755a4924c71SGirish K S MMC_BUS_WIDTH_4, 756a4924c71SGirish K S MMC_BUS_WIDTH_8, 757a4924c71SGirish K S }; 758a4924c71SGirish K S 759a4924c71SGirish K S BUG_ON(!card); 760a4924c71SGirish K S 761a4924c71SGirish K S host = card->host; 762a4924c71SGirish K S 763a4924c71SGirish K S if (card->ext_csd.card_type & EXT_CSD_CARD_TYPE_SDR_1_2V && 764a4924c71SGirish K S host->caps2 & MMC_CAP2_HS200_1_2V_SDR) 765a4924c71SGirish K S if (mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120, 0)) 766a4924c71SGirish K S err = mmc_set_signal_voltage(host, 767a4924c71SGirish K S MMC_SIGNAL_VOLTAGE_180, 0); 768a4924c71SGirish K S 769a4924c71SGirish K S /* If fails try again during next card power cycle */ 770a4924c71SGirish K S if (err) 771a4924c71SGirish K S goto err; 772a4924c71SGirish K S 773a4924c71SGirish K S idx = (host->caps & MMC_CAP_8_BIT_DATA) ? 1 : 0; 774a4924c71SGirish K S 775a4924c71SGirish K S /* 776a4924c71SGirish K S * Unlike SD, MMC cards dont have a configuration register to notify 777a4924c71SGirish K S * supported bus width. So bus test command should be run to identify 778a4924c71SGirish K S * the supported bus width or compare the ext csd values of current 779a4924c71SGirish K S * bus width and ext csd values of 1 bit mode read earlier. 780a4924c71SGirish K S */ 781a4924c71SGirish K S for (; idx >= 0; idx--) { 782a4924c71SGirish K S 783a4924c71SGirish K S /* 784a4924c71SGirish K S * Host is capable of 8bit transfer, then switch 785a4924c71SGirish K S * the device to work in 8bit transfer mode. If the 786a4924c71SGirish K S * mmc switch command returns error then switch to 787a4924c71SGirish K S * 4bit transfer mode. On success set the corresponding 788a4924c71SGirish K S * bus width on the host. 789a4924c71SGirish K S */ 790a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 791a4924c71SGirish K S EXT_CSD_BUS_WIDTH, 792a4924c71SGirish K S ext_csd_bits[idx], 793a4924c71SGirish K S card->ext_csd.generic_cmd6_time); 794a4924c71SGirish K S if (err) 795a4924c71SGirish K S continue; 796a4924c71SGirish K S 797a4924c71SGirish K S mmc_set_bus_width(card->host, bus_widths[idx]); 798a4924c71SGirish K S 799a4924c71SGirish K S if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 800a4924c71SGirish K S err = mmc_compare_ext_csds(card, bus_widths[idx]); 801a4924c71SGirish K S else 802a4924c71SGirish K S err = mmc_bus_test(card, bus_widths[idx]); 803a4924c71SGirish K S if (!err) 804a4924c71SGirish K S break; 805a4924c71SGirish K S } 806a4924c71SGirish K S 807a4924c71SGirish K S /* switch to HS200 mode if bus width set successfully */ 808a4924c71SGirish K S if (!err) 809a4924c71SGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 810a4924c71SGirish K S EXT_CSD_HS_TIMING, 2, 0); 811a4924c71SGirish K S err: 812a4924c71SGirish K S return err; 813a4924c71SGirish K S } 814a4924c71SGirish K S 815a4924c71SGirish K S /* 8166abaa0c9SPierre Ossman * Handle the detection and initialisation of a card. 8176abaa0c9SPierre Ossman * 8188769392bSDeepak Saxena * In the case of a resume, "oldcard" will contain the card 8196abaa0c9SPierre Ossman * we're trying to reinitialise. 8207ea239d9SPierre Ossman */ 8218c75deaeSPierre Ossman static int mmc_init_card(struct mmc_host *host, u32 ocr, 8226abaa0c9SPierre Ossman struct mmc_card *oldcard) 8237ea239d9SPierre Ossman { 8247ea239d9SPierre Ossman struct mmc_card *card; 82525d5c699SPhilip Rakity int err, ddr = 0; 8267ea239d9SPierre Ossman u32 cid[4]; 8277ea239d9SPierre Ossman unsigned int max_dtr; 828b676f039SPhilip Rakity u32 rocr; 82908ee80ccSPhilip Rakity u8 *ext_csd = NULL; 8307ea239d9SPierre Ossman 8317ea239d9SPierre Ossman BUG_ON(!host); 832d84075c8SPierre Ossman WARN_ON(!host->claimed); 8337ea239d9SPierre Ossman 83444669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting init */ 83544669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 83644669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 83744669034SStefan Nilsson XK 838e7747475SUlf Hansson /* Initialization should be done at 3.3 V I/O voltage. */ 839e7747475SUlf Hansson mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330, 0); 840e7747475SUlf Hansson 8417ea239d9SPierre Ossman /* 8427ea239d9SPierre Ossman * Since we're changing the OCR value, we seem to 8437ea239d9SPierre Ossman * need to tell some cards to go back to the idle 8447ea239d9SPierre Ossman * state. We wait 1ms to give cards time to 8457ea239d9SPierre Ossman * respond. 846c3805467SBalaji T K * mmc_go_idle is needed for eMMC that are asleep 8477ea239d9SPierre Ossman */ 8487ea239d9SPierre Ossman mmc_go_idle(host); 8497ea239d9SPierre Ossman 8507ea239d9SPierre Ossman /* The extra bit indicates that we support high capacity */ 851b676f039SPhilip Rakity err = mmc_send_op_cond(host, ocr | (1 << 30), &rocr); 85217b0429dSPierre Ossman if (err) 8536abaa0c9SPierre Ossman goto err; 8547ea239d9SPierre Ossman 8557ea239d9SPierre Ossman /* 856af517150SDavid Brownell * For SPI, enable CRC as appropriate. 857af517150SDavid Brownell */ 858af517150SDavid Brownell if (mmc_host_is_spi(host)) { 859af517150SDavid Brownell err = mmc_spi_set_crc(host, use_spi_crc); 860af517150SDavid Brownell if (err) 861af517150SDavid Brownell goto err; 862af517150SDavid Brownell } 863af517150SDavid Brownell 864af517150SDavid Brownell /* 8657ea239d9SPierre Ossman * Fetch CID from card. 8667ea239d9SPierre Ossman */ 867af517150SDavid Brownell if (mmc_host_is_spi(host)) 868af517150SDavid Brownell err = mmc_send_cid(host, cid); 869af517150SDavid Brownell else 8707ea239d9SPierre Ossman err = mmc_all_send_cid(host, cid); 87117b0429dSPierre Ossman if (err) 8727ea239d9SPierre Ossman goto err; 8737ea239d9SPierre Ossman 8746abaa0c9SPierre Ossman if (oldcard) { 875adf66a0dSPierre Ossman if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) { 876adf66a0dSPierre Ossman err = -ENOENT; 8776abaa0c9SPierre Ossman goto err; 878adf66a0dSPierre Ossman } 8796abaa0c9SPierre Ossman 8806abaa0c9SPierre Ossman card = oldcard; 8816abaa0c9SPierre Ossman } else { 8827ea239d9SPierre Ossman /* 8837ea239d9SPierre Ossman * Allocate card structure. 8847ea239d9SPierre Ossman */ 88551ec92e2SPierre Ossman card = mmc_alloc_card(host, &mmc_type); 886adf66a0dSPierre Ossman if (IS_ERR(card)) { 887adf66a0dSPierre Ossman err = PTR_ERR(card); 8887ea239d9SPierre Ossman goto err; 889adf66a0dSPierre Ossman } 8907ea239d9SPierre Ossman 8917ea239d9SPierre Ossman card->type = MMC_TYPE_MMC; 8927ea239d9SPierre Ossman card->rca = 1; 8937ea239d9SPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 8946abaa0c9SPierre Ossman } 8957ea239d9SPierre Ossman 8967ea239d9SPierre Ossman /* 897af517150SDavid Brownell * For native busses: set card RCA and quit open drain mode. 8987ea239d9SPierre Ossman */ 899af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 9007ea239d9SPierre Ossman err = mmc_set_relative_addr(card); 90117b0429dSPierre Ossman if (err) 9027ea239d9SPierre Ossman goto free_card; 9037ea239d9SPierre Ossman 9047ea239d9SPierre Ossman mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 905af517150SDavid Brownell } 9067ea239d9SPierre Ossman 9076abaa0c9SPierre Ossman if (!oldcard) { 9087ea239d9SPierre Ossman /* 9097ea239d9SPierre Ossman * Fetch CSD from card. 9107ea239d9SPierre Ossman */ 9117ea239d9SPierre Ossman err = mmc_send_csd(card, card->raw_csd); 91217b0429dSPierre Ossman if (err) 9137ea239d9SPierre Ossman goto free_card; 9147ea239d9SPierre Ossman 915bd766312SPierre Ossman err = mmc_decode_csd(card); 916adf66a0dSPierre Ossman if (err) 917bd766312SPierre Ossman goto free_card; 918bd766312SPierre Ossman err = mmc_decode_cid(card); 919adf66a0dSPierre Ossman if (err) 920bd766312SPierre Ossman goto free_card; 9216abaa0c9SPierre Ossman } 9227ea239d9SPierre Ossman 9237ea239d9SPierre Ossman /* 92489a73cf5SPierre Ossman * Select card, as all following commands rely on that. 9257ea239d9SPierre Ossman */ 926af517150SDavid Brownell if (!mmc_host_is_spi(host)) { 9277ea239d9SPierre Ossman err = mmc_select_card(card); 92817b0429dSPierre Ossman if (err) 9297ea239d9SPierre Ossman goto free_card; 930af517150SDavid Brownell } 9317ea239d9SPierre Ossman 9326abaa0c9SPierre Ossman if (!oldcard) { 93389a73cf5SPierre Ossman /* 934af517150SDavid Brownell * Fetch and process extended CSD. 93589a73cf5SPierre Ossman */ 93608ee80ccSPhilip Rakity 93708ee80ccSPhilip Rakity err = mmc_get_ext_csd(card, &ext_csd); 93808ee80ccSPhilip Rakity if (err) 93908ee80ccSPhilip Rakity goto free_card; 94008ee80ccSPhilip Rakity err = mmc_read_ext_csd(card, ext_csd); 94117b0429dSPierre Ossman if (err) 9427ea239d9SPierre Ossman goto free_card; 943b676f039SPhilip Rakity 944b676f039SPhilip Rakity /* If doing byte addressing, check if required to do sector 945b676f039SPhilip Rakity * addressing. Handle the case of <2GB cards needing sector 946b676f039SPhilip Rakity * addressing. See section 8.1 JEDEC Standard JED84-A441; 947b676f039SPhilip Rakity * ocr register has bit 30 set for sector addressing. 948b676f039SPhilip Rakity */ 949b676f039SPhilip Rakity if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30))) 950b676f039SPhilip Rakity mmc_card_set_blockaddr(card); 951b676f039SPhilip Rakity 952dfe86cbaSAdrian Hunter /* Erase size depends on CSD and Extended CSD */ 953dfe86cbaSAdrian Hunter mmc_set_erase_size(card); 9546abaa0c9SPierre Ossman } 9557ea239d9SPierre Ossman 9567ea239d9SPierre Ossman /* 957709de99dSChuanxiao Dong * If enhanced_area_en is TRUE, host needs to enable ERASE_GRP_DEF 958709de99dSChuanxiao Dong * bit. This bit will be lost every time after a reset or power off. 959709de99dSChuanxiao Dong */ 96083bb24aaSAdrian Hunter if (card->ext_csd.enhanced_area_en || 96183bb24aaSAdrian Hunter (card->ext_csd.rev >= 3 && (host->caps2 & MMC_CAP2_HC_ERASE_SZ))) { 962709de99dSChuanxiao Dong err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 963b23cf0bdSSeungwon Jeon EXT_CSD_ERASE_GROUP_DEF, 1, 964b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 965709de99dSChuanxiao Dong 966709de99dSChuanxiao Dong if (err && err != -EBADMSG) 967709de99dSChuanxiao Dong goto free_card; 968709de99dSChuanxiao Dong 969709de99dSChuanxiao Dong if (err) { 970709de99dSChuanxiao Dong err = 0; 971709de99dSChuanxiao Dong /* 972709de99dSChuanxiao Dong * Just disable enhanced area off & sz 973709de99dSChuanxiao Dong * will try to enable ERASE_GROUP_DEF 974709de99dSChuanxiao Dong * during next time reinit 975709de99dSChuanxiao Dong */ 976709de99dSChuanxiao Dong card->ext_csd.enhanced_area_offset = -EINVAL; 977709de99dSChuanxiao Dong card->ext_csd.enhanced_area_size = -EINVAL; 978709de99dSChuanxiao Dong } else { 979709de99dSChuanxiao Dong card->ext_csd.erase_group_def = 1; 980709de99dSChuanxiao Dong /* 981709de99dSChuanxiao Dong * enable ERASE_GRP_DEF successfully. 982709de99dSChuanxiao Dong * This will affect the erase size, so 983709de99dSChuanxiao Dong * here need to reset erase size 984709de99dSChuanxiao Dong */ 985709de99dSChuanxiao Dong mmc_set_erase_size(card); 986709de99dSChuanxiao Dong } 987709de99dSChuanxiao Dong } 988709de99dSChuanxiao Dong 989709de99dSChuanxiao Dong /* 99041e2a489SPhilip Rakity * Ensure eMMC user default partition is enabled 99141e2a489SPhilip Rakity */ 992371a689fSAndrei Warkentin if (card->ext_csd.part_config & EXT_CSD_PART_CONFIG_ACC_MASK) { 993371a689fSAndrei Warkentin card->ext_csd.part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK; 994371a689fSAndrei Warkentin err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONFIG, 995371a689fSAndrei Warkentin card->ext_csd.part_config, 996371a689fSAndrei Warkentin card->ext_csd.part_time); 997371a689fSAndrei Warkentin if (err && err != -EBADMSG) 998371a689fSAndrei Warkentin goto free_card; 99941e2a489SPhilip Rakity } 100041e2a489SPhilip Rakity 100141e2a489SPhilip Rakity /* 1002bec8726aSGirish K S * If the host supports the power_off_notify capability then 1003bec8726aSGirish K S * set the notification byte in the ext_csd register of device 1004bec8726aSGirish K S */ 1005bec8726aSGirish K S if ((host->caps2 & MMC_CAP2_POWEROFF_NOTIFY) && 1006a80f1627SGirish K S (card->ext_csd.rev >= 6)) { 1007bec8726aSGirish K S err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 1008bec8726aSGirish K S EXT_CSD_POWER_OFF_NOTIFICATION, 1009bec8726aSGirish K S EXT_CSD_POWER_ON, 1010bec8726aSGirish K S card->ext_csd.generic_cmd6_time); 1011bec8726aSGirish K S if (err && err != -EBADMSG) 1012bec8726aSGirish K S goto free_card; 1013bec8726aSGirish K S 101496a85d54SGirish K S /* 101596a85d54SGirish K S * The err can be -EBADMSG or 0, 101696a85d54SGirish K S * so check for success and update the flag 101796a85d54SGirish K S */ 1018bec8726aSGirish K S if (!err) 1019bec8726aSGirish K S card->poweroff_notify_state = MMC_POWERED_ON; 102096a85d54SGirish K S } 1021bec8726aSGirish K S 1022bec8726aSGirish K S /* 102389a73cf5SPierre Ossman * Activate high speed (if supported) 102489a73cf5SPierre Ossman */ 1025a4924c71SGirish K S if (card->ext_csd.hs_max_dtr != 0) { 1026a4924c71SGirish K S err = 0; 1027a4924c71SGirish K S if (card->ext_csd.hs_max_dtr > 52000000 && 1028a4924c71SGirish K S host->caps2 & MMC_CAP2_HS200) 1029a4924c71SGirish K S err = mmc_select_hs200(card); 1030a4924c71SGirish K S else if (host->caps & MMC_CAP_MMC_HIGHSPEED) 103189a73cf5SPierre Ossman err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 10327488e924SGirish K S EXT_CSD_HS_TIMING, 1, 10337488e924SGirish K S card->ext_csd.generic_cmd6_time); 1034a4924c71SGirish K S 1035ef0b27d4SAdrian Hunter if (err && err != -EBADMSG) 103689a73cf5SPierre Ossman goto free_card; 103789a73cf5SPierre Ossman 1038ef0b27d4SAdrian Hunter if (err) { 1039a3c76eb9SGirish K S pr_warning("%s: switch to highspeed failed\n", 1040ef0b27d4SAdrian Hunter mmc_hostname(card->host)); 1041ef0b27d4SAdrian Hunter err = 0; 1042ef0b27d4SAdrian Hunter } else { 1043a4924c71SGirish K S if (card->ext_csd.hs_max_dtr > 52000000 && 1044a4924c71SGirish K S host->caps2 & MMC_CAP2_HS200) { 1045a4924c71SGirish K S mmc_card_set_hs200(card); 1046a4924c71SGirish K S mmc_set_timing(card->host, 1047a4924c71SGirish K S MMC_TIMING_MMC_HS200); 1048a4924c71SGirish K S } else { 104989a73cf5SPierre Ossman mmc_card_set_highspeed(card); 105089a73cf5SPierre Ossman mmc_set_timing(card->host, MMC_TIMING_MMC_HS); 105189a73cf5SPierre Ossman } 1052ef0b27d4SAdrian Hunter } 1053a4924c71SGirish K S } 105489a73cf5SPierre Ossman 105589a73cf5SPierre Ossman /* 10567ea239d9SPierre Ossman * Compute bus speed. 10577ea239d9SPierre Ossman */ 10587ea239d9SPierre Ossman max_dtr = (unsigned int)-1; 10597ea239d9SPierre Ossman 1060a4924c71SGirish K S if (mmc_card_highspeed(card) || mmc_card_hs200(card)) { 10617ea239d9SPierre Ossman if (max_dtr > card->ext_csd.hs_max_dtr) 10627ea239d9SPierre Ossman max_dtr = card->ext_csd.hs_max_dtr; 10637ea239d9SPierre Ossman } else if (max_dtr > card->csd.max_dtr) { 10647ea239d9SPierre Ossman max_dtr = card->csd.max_dtr; 10657ea239d9SPierre Ossman } 10667ea239d9SPierre Ossman 10677ea239d9SPierre Ossman mmc_set_clock(host, max_dtr); 10687ea239d9SPierre Ossman 106989a73cf5SPierre Ossman /* 10700f8d8ea6SAdrian Hunter * Indicate DDR mode (if supported). 1071dfc13e84SHanumath Prasad */ 1072dfc13e84SHanumath Prasad if (mmc_card_highspeed(card)) { 1073dfc13e84SHanumath Prasad if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V) 10744c4cb171SPhilip Rakity && ((host->caps & (MMC_CAP_1_8V_DDR | 10754c4cb171SPhilip Rakity MMC_CAP_UHS_DDR50)) 10764c4cb171SPhilip Rakity == (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50))) 107749e3b5a4SAdrian Hunter ddr = MMC_1_8V_DDR_MODE; 1078dfc13e84SHanumath Prasad else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V) 10794c4cb171SPhilip Rakity && ((host->caps & (MMC_CAP_1_2V_DDR | 10804c4cb171SPhilip Rakity MMC_CAP_UHS_DDR50)) 10814c4cb171SPhilip Rakity == (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50))) 108249e3b5a4SAdrian Hunter ddr = MMC_1_2V_DDR_MODE; 1083dfc13e84SHanumath Prasad } 1084dfc13e84SHanumath Prasad 1085dfc13e84SHanumath Prasad /* 1086a4924c71SGirish K S * Indicate HS200 SDR mode (if supported). 1087a4924c71SGirish K S */ 1088a4924c71SGirish K S if (mmc_card_hs200(card)) { 1089a4924c71SGirish K S u32 ext_csd_bits; 1090a4924c71SGirish K S u32 bus_width = card->host->ios.bus_width; 1091a4924c71SGirish K S 1092a4924c71SGirish K S /* 1093a4924c71SGirish K S * For devices supporting HS200 mode, the bus width has 1094a4924c71SGirish K S * to be set before executing the tuning function. If 1095a4924c71SGirish K S * set before tuning, then device will respond with CRC 1096a4924c71SGirish K S * errors for responses on CMD line. So for HS200 the 1097a4924c71SGirish K S * sequence will be 1098a4924c71SGirish K S * 1. set bus width 4bit / 8 bit (1 bit not supported) 1099a4924c71SGirish K S * 2. switch to HS200 mode 1100a4924c71SGirish K S * 3. set the clock to > 52Mhz <=200MHz and 1101a4924c71SGirish K S * 4. execute tuning for HS200 1102a4924c71SGirish K S */ 1103a4924c71SGirish K S if ((host->caps2 & MMC_CAP2_HS200) && 110452d0974eSSubhash Jadavani card->host->ops->execute_tuning) { 110552d0974eSSubhash Jadavani mmc_host_clk_hold(card->host); 1106a4924c71SGirish K S err = card->host->ops->execute_tuning(card->host, 1107a4924c71SGirish K S MMC_SEND_TUNING_BLOCK_HS200); 110852d0974eSSubhash Jadavani mmc_host_clk_release(card->host); 110952d0974eSSubhash Jadavani } 1110a4924c71SGirish K S if (err) { 1111a4924c71SGirish K S pr_warning("%s: tuning execution failed\n", 1112a4924c71SGirish K S mmc_hostname(card->host)); 1113a4924c71SGirish K S goto err; 1114a4924c71SGirish K S } 1115a4924c71SGirish K S 1116a4924c71SGirish K S ext_csd_bits = (bus_width == MMC_BUS_WIDTH_8) ? 1117a4924c71SGirish K S EXT_CSD_BUS_WIDTH_8 : EXT_CSD_BUS_WIDTH_4; 1118a4924c71SGirish K S err = mmc_select_powerclass(card, ext_csd_bits, ext_csd); 111993fc5a47SSubhash Jadavani if (err) 112093fc5a47SSubhash Jadavani pr_warning("%s: power class selection to bus width %d" 112193fc5a47SSubhash Jadavani " failed\n", mmc_hostname(card->host), 112293fc5a47SSubhash Jadavani 1 << bus_width); 1123a4924c71SGirish K S } 1124a4924c71SGirish K S 1125a4924c71SGirish K S /* 11260f8d8ea6SAdrian Hunter * Activate wide bus and DDR (if supported). 112789a73cf5SPierre Ossman */ 1128a4924c71SGirish K S if (!mmc_card_hs200(card) && 11297488e924SGirish K S (card->csd.mmca_vsn >= CSD_SPEC_VER_4) && 1130b30f8af3SJarkko Lavinen (host->caps & (MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA))) { 113122113efdSAries Lee static unsigned ext_csd_bits[][2] = { 113222113efdSAries Lee { EXT_CSD_BUS_WIDTH_8, EXT_CSD_DDR_BUS_WIDTH_8 }, 113322113efdSAries Lee { EXT_CSD_BUS_WIDTH_4, EXT_CSD_DDR_BUS_WIDTH_4 }, 113422113efdSAries Lee { EXT_CSD_BUS_WIDTH_1, EXT_CSD_BUS_WIDTH_1 }, 113522113efdSAries Lee }; 113622113efdSAries Lee static unsigned bus_widths[] = { 113722113efdSAries Lee MMC_BUS_WIDTH_8, 113822113efdSAries Lee MMC_BUS_WIDTH_4, 113922113efdSAries Lee MMC_BUS_WIDTH_1 114022113efdSAries Lee }; 114122113efdSAries Lee unsigned idx, bus_width = 0; 1142b30f8af3SJarkko Lavinen 114322113efdSAries Lee if (host->caps & MMC_CAP_8_BIT_DATA) 114422113efdSAries Lee idx = 0; 1145dfc13e84SHanumath Prasad else 114622113efdSAries Lee idx = 1; 114722113efdSAries Lee for (; idx < ARRAY_SIZE(bus_widths); idx++) { 114822113efdSAries Lee bus_width = bus_widths[idx]; 114922113efdSAries Lee if (bus_width == MMC_BUS_WIDTH_1) 115022113efdSAries Lee ddr = 0; /* no DDR for 1-bit width */ 1151b87d8dbfSGirish K S err = mmc_select_powerclass(card, ext_csd_bits[idx][0], 1152b87d8dbfSGirish K S ext_csd); 1153b87d8dbfSGirish K S if (err) 115493fc5a47SSubhash Jadavani pr_warning("%s: power class selection to " 1155b87d8dbfSGirish K S "bus width %d failed\n", 1156b87d8dbfSGirish K S mmc_hostname(card->host), 1157b87d8dbfSGirish K S 1 << bus_width); 1158b87d8dbfSGirish K S 115922113efdSAries Lee err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 116022113efdSAries Lee EXT_CSD_BUS_WIDTH, 1161d3a8d95dSAndrei Warkentin ext_csd_bits[idx][0], 1162b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 116322113efdSAries Lee if (!err) { 11644c4cb171SPhilip Rakity mmc_set_bus_width(card->host, bus_width); 116508ee80ccSPhilip Rakity 116622113efdSAries Lee /* 116722113efdSAries Lee * If controller can't handle bus width test, 116808ee80ccSPhilip Rakity * compare ext_csd previously read in 1 bit mode 116908ee80ccSPhilip Rakity * against ext_csd at new bus width 117022113efdSAries Lee */ 117122113efdSAries Lee if (!(host->caps & MMC_CAP_BUS_WIDTH_TEST)) 117208ee80ccSPhilip Rakity err = mmc_compare_ext_csds(card, 117308ee80ccSPhilip Rakity bus_width); 117408ee80ccSPhilip Rakity else 117522113efdSAries Lee err = mmc_bus_test(card, bus_width); 117622113efdSAries Lee if (!err) 117722113efdSAries Lee break; 117822113efdSAries Lee } 1179b30f8af3SJarkko Lavinen } 1180b30f8af3SJarkko Lavinen 118122113efdSAries Lee if (!err && ddr) { 1182b87d8dbfSGirish K S err = mmc_select_powerclass(card, ext_csd_bits[idx][1], 1183b87d8dbfSGirish K S ext_csd); 1184b87d8dbfSGirish K S if (err) 118593fc5a47SSubhash Jadavani pr_warning("%s: power class selection to " 1186b87d8dbfSGirish K S "bus width %d ddr %d failed\n", 1187b87d8dbfSGirish K S mmc_hostname(card->host), 1188b87d8dbfSGirish K S 1 << bus_width, ddr); 1189b87d8dbfSGirish K S 119089a73cf5SPierre Ossman err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 119122113efdSAries Lee EXT_CSD_BUS_WIDTH, 1192d3a8d95dSAndrei Warkentin ext_csd_bits[idx][1], 1193b23cf0bdSSeungwon Jeon card->ext_csd.generic_cmd6_time); 119422113efdSAries Lee } 1195ef0b27d4SAdrian Hunter if (err) { 1196a3c76eb9SGirish K S pr_warning("%s: switch to bus width %d ddr %d " 1197ef0b27d4SAdrian Hunter "failed\n", mmc_hostname(card->host), 11980f8d8ea6SAdrian Hunter 1 << bus_width, ddr); 119922113efdSAries Lee goto free_card; 120022113efdSAries Lee } else if (ddr) { 12014c4cb171SPhilip Rakity /* 12024c4cb171SPhilip Rakity * eMMC cards can support 3.3V to 1.2V i/o (vccq) 12034c4cb171SPhilip Rakity * signaling. 12044c4cb171SPhilip Rakity * 12054c4cb171SPhilip Rakity * EXT_CSD_CARD_TYPE_DDR_1_8V means 3.3V or 1.8V vccq. 12064c4cb171SPhilip Rakity * 12074c4cb171SPhilip Rakity * 1.8V vccq at 3.3V core voltage (vcc) is not required 12084c4cb171SPhilip Rakity * in the JEDEC spec for DDR. 12094c4cb171SPhilip Rakity * 12104c4cb171SPhilip Rakity * Do not force change in vccq since we are obviously 12114c4cb171SPhilip Rakity * working and no change to vccq is needed. 12124c4cb171SPhilip Rakity * 12134c4cb171SPhilip Rakity * WARNING: eMMC rules are NOT the same as SD DDR 12144c4cb171SPhilip Rakity */ 1215913047e9SGirish K S if (ddr == MMC_1_2V_DDR_MODE) { 12164c4cb171SPhilip Rakity err = mmc_set_signal_voltage(host, 12174c4cb171SPhilip Rakity MMC_SIGNAL_VOLTAGE_120, 0); 12184c4cb171SPhilip Rakity if (err) 12194c4cb171SPhilip Rakity goto err; 12204c4cb171SPhilip Rakity } 12210f8d8ea6SAdrian Hunter mmc_card_set_ddr_mode(card); 12224c4cb171SPhilip Rakity mmc_set_timing(card->host, MMC_TIMING_UHS_DDR50); 12234c4cb171SPhilip Rakity mmc_set_bus_width(card->host, bus_width); 122489a73cf5SPierre Ossman } 1225ef0b27d4SAdrian Hunter } 122689a73cf5SPierre Ossman 1227881d1c25SSeungwon Jeon /* 122852d0974eSSubhash Jadavani * Enable HPI feature (if supported) 122952d0974eSSubhash Jadavani */ 123052d0974eSSubhash Jadavani if (card->ext_csd.hpi) { 123152d0974eSSubhash Jadavani err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 123252d0974eSSubhash Jadavani EXT_CSD_HPI_MGMT, 1, 123352d0974eSSubhash Jadavani card->ext_csd.generic_cmd6_time); 123452d0974eSSubhash Jadavani if (err && err != -EBADMSG) 123552d0974eSSubhash Jadavani goto free_card; 123652d0974eSSubhash Jadavani if (err) { 123752d0974eSSubhash Jadavani pr_warning("%s: Enabling HPI failed\n", 123852d0974eSSubhash Jadavani mmc_hostname(card->host)); 123952d0974eSSubhash Jadavani err = 0; 124052d0974eSSubhash Jadavani } else 124152d0974eSSubhash Jadavani card->ext_csd.hpi_en = 1; 124252d0974eSSubhash Jadavani } 124352d0974eSSubhash Jadavani 124452d0974eSSubhash Jadavani /* 1245881d1c25SSeungwon Jeon * If cache size is higher than 0, this indicates 1246881d1c25SSeungwon Jeon * the existence of cache and it can be turned on. 1247881d1c25SSeungwon Jeon */ 1248881d1c25SSeungwon Jeon if ((host->caps2 & MMC_CAP2_CACHE_CTRL) && 1249881d1c25SSeungwon Jeon card->ext_csd.cache_size > 0) { 1250881d1c25SSeungwon Jeon err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, 12518bc0678bSSeungwon Jeon EXT_CSD_CACHE_CTRL, 1, 12528bc0678bSSeungwon Jeon card->ext_csd.generic_cmd6_time); 1253881d1c25SSeungwon Jeon if (err && err != -EBADMSG) 1254881d1c25SSeungwon Jeon goto free_card; 1255881d1c25SSeungwon Jeon 1256881d1c25SSeungwon Jeon /* 1257881d1c25SSeungwon Jeon * Only if no error, cache is turned on successfully. 1258881d1c25SSeungwon Jeon */ 12598bc0678bSSeungwon Jeon if (err) { 12608bc0678bSSeungwon Jeon pr_warning("%s: Cache is supported, " 12618bc0678bSSeungwon Jeon "but failed to turn on (%d)\n", 12628bc0678bSSeungwon Jeon mmc_hostname(card->host), err); 12638bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 0; 12648bc0678bSSeungwon Jeon err = 0; 12658bc0678bSSeungwon Jeon } else { 12668bc0678bSSeungwon Jeon card->ext_csd.cache_ctrl = 1; 12678bc0678bSSeungwon Jeon } 1268881d1c25SSeungwon Jeon } 1269881d1c25SSeungwon Jeon 12706abaa0c9SPierre Ossman if (!oldcard) 12717ea239d9SPierre Ossman host->card = card; 12727ea239d9SPierre Ossman 127308ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 127417b0429dSPierre Ossman return 0; 12756abaa0c9SPierre Ossman 12766abaa0c9SPierre Ossman free_card: 12776abaa0c9SPierre Ossman if (!oldcard) 12786abaa0c9SPierre Ossman mmc_remove_card(card); 12796abaa0c9SPierre Ossman err: 128008ee80ccSPhilip Rakity mmc_free_ext_csd(ext_csd); 12816abaa0c9SPierre Ossman 1282adf66a0dSPierre Ossman return err; 12836abaa0c9SPierre Ossman } 12846abaa0c9SPierre Ossman 12856abaa0c9SPierre Ossman /* 12866abaa0c9SPierre Ossman * Host is being removed. Free up the current card. 12876abaa0c9SPierre Ossman */ 12886abaa0c9SPierre Ossman static void mmc_remove(struct mmc_host *host) 12896abaa0c9SPierre Ossman { 12906abaa0c9SPierre Ossman BUG_ON(!host); 12916abaa0c9SPierre Ossman BUG_ON(!host->card); 12926abaa0c9SPierre Ossman 12936abaa0c9SPierre Ossman mmc_remove_card(host->card); 12946abaa0c9SPierre Ossman host->card = NULL; 12956abaa0c9SPierre Ossman } 12966abaa0c9SPierre Ossman 12976abaa0c9SPierre Ossman /* 1298d3049504SAdrian Hunter * Card detection - card is alive. 1299d3049504SAdrian Hunter */ 1300d3049504SAdrian Hunter static int mmc_alive(struct mmc_host *host) 1301d3049504SAdrian Hunter { 1302d3049504SAdrian Hunter return mmc_send_status(host->card, NULL); 1303d3049504SAdrian Hunter } 1304d3049504SAdrian Hunter 1305d3049504SAdrian Hunter /* 13066abaa0c9SPierre Ossman * Card detection callback from host. 13076abaa0c9SPierre Ossman */ 13086abaa0c9SPierre Ossman static void mmc_detect(struct mmc_host *host) 13096abaa0c9SPierre Ossman { 13106abaa0c9SPierre Ossman int err; 13116abaa0c9SPierre Ossman 13126abaa0c9SPierre Ossman BUG_ON(!host); 13136abaa0c9SPierre Ossman BUG_ON(!host->card); 13146abaa0c9SPierre Ossman 13156abaa0c9SPierre Ossman mmc_claim_host(host); 13166abaa0c9SPierre Ossman 13176abaa0c9SPierre Ossman /* 13186abaa0c9SPierre Ossman * Just check if our card has been removed. 13196abaa0c9SPierre Ossman */ 1320d3049504SAdrian Hunter err = _mmc_detect_card_removed(host); 13216abaa0c9SPierre Ossman 13227ea239d9SPierre Ossman mmc_release_host(host); 13237ea239d9SPierre Ossman 132417b0429dSPierre Ossman if (err) { 13254101c16aSPierre Ossman mmc_remove(host); 13266abaa0c9SPierre Ossman 13276abaa0c9SPierre Ossman mmc_claim_host(host); 13286abaa0c9SPierre Ossman mmc_detach_bus(host); 13297f7e4129SUlf Hansson mmc_power_off(host); 13306abaa0c9SPierre Ossman mmc_release_host(host); 13316abaa0c9SPierre Ossman } 13326abaa0c9SPierre Ossman } 13336abaa0c9SPierre Ossman 13346abaa0c9SPierre Ossman /* 13356abaa0c9SPierre Ossman * Suspend callback from host. 13366abaa0c9SPierre Ossman */ 133795cdfb72SNicolas Pitre static int mmc_suspend(struct mmc_host *host) 13386abaa0c9SPierre Ossman { 1339c3805467SBalaji T K int err = 0; 1340c3805467SBalaji T K 13416abaa0c9SPierre Ossman BUG_ON(!host); 13426abaa0c9SPierre Ossman BUG_ON(!host->card); 13436abaa0c9SPierre Ossman 13446abaa0c9SPierre Ossman mmc_claim_host(host); 13453e73c36bSGirish K S if (mmc_card_can_sleep(host)) { 1346c3805467SBalaji T K err = mmc_card_sleep(host); 13473e73c36bSGirish K S if (!err) 13483e73c36bSGirish K S mmc_card_set_sleep(host->card); 13493e73c36bSGirish K S } else if (!mmc_host_is_spi(host)) 13506abaa0c9SPierre Ossman mmc_deselect_cards(host); 13513e73c36bSGirish K S host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); 13526abaa0c9SPierre Ossman mmc_release_host(host); 135395cdfb72SNicolas Pitre 1354c3805467SBalaji T K return err; 13556abaa0c9SPierre Ossman } 13566abaa0c9SPierre Ossman 13576abaa0c9SPierre Ossman /* 13586abaa0c9SPierre Ossman * Resume callback from host. 13596abaa0c9SPierre Ossman * 13606abaa0c9SPierre Ossman * This function tries to determine if the same card is still present 13616abaa0c9SPierre Ossman * and, if so, restore all state to it. 13626abaa0c9SPierre Ossman */ 136395cdfb72SNicolas Pitre static int mmc_resume(struct mmc_host *host) 13646abaa0c9SPierre Ossman { 13656abaa0c9SPierre Ossman int err; 13666abaa0c9SPierre Ossman 13676abaa0c9SPierre Ossman BUG_ON(!host); 13686abaa0c9SPierre Ossman BUG_ON(!host->card); 13696abaa0c9SPierre Ossman 13706abaa0c9SPierre Ossman mmc_claim_host(host); 13713e73c36bSGirish K S if (mmc_card_is_sleep(host->card)) { 13723e73c36bSGirish K S err = mmc_card_awake(host); 13733e73c36bSGirish K S mmc_card_clr_sleep(host->card); 13743e73c36bSGirish K S } else 13758c75deaeSPierre Ossman err = mmc_init_card(host, host->ocr, host->card); 13762986d0bfSPierre Ossman mmc_release_host(host); 13772986d0bfSPierre Ossman 137895cdfb72SNicolas Pitre return err; 13796abaa0c9SPierre Ossman } 13806abaa0c9SPierre Ossman 138112ae637fSOhad Ben-Cohen static int mmc_power_restore(struct mmc_host *host) 1382eae1aeeeSAdrian Hunter { 138312ae637fSOhad Ben-Cohen int ret; 138412ae637fSOhad Ben-Cohen 13853e73c36bSGirish K S host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); 13863e73c36bSGirish K S mmc_card_clr_sleep(host->card); 1387eae1aeeeSAdrian Hunter mmc_claim_host(host); 138812ae637fSOhad Ben-Cohen ret = mmc_init_card(host, host->ocr, host->card); 1389eae1aeeeSAdrian Hunter mmc_release_host(host); 139012ae637fSOhad Ben-Cohen 139112ae637fSOhad Ben-Cohen return ret; 1392eae1aeeeSAdrian Hunter } 1393eae1aeeeSAdrian Hunter 1394b1ebe384SJarkko Lavinen static int mmc_sleep(struct mmc_host *host) 1395b1ebe384SJarkko Lavinen { 1396b1ebe384SJarkko Lavinen struct mmc_card *card = host->card; 1397b1ebe384SJarkko Lavinen int err = -ENOSYS; 1398b1ebe384SJarkko Lavinen 1399b1ebe384SJarkko Lavinen if (card && card->ext_csd.rev >= 3) { 1400b1ebe384SJarkko Lavinen err = mmc_card_sleepawake(host, 1); 1401b1ebe384SJarkko Lavinen if (err < 0) 1402b1ebe384SJarkko Lavinen pr_debug("%s: Error %d while putting card into sleep", 1403b1ebe384SJarkko Lavinen mmc_hostname(host), err); 1404b1ebe384SJarkko Lavinen } 1405b1ebe384SJarkko Lavinen 1406b1ebe384SJarkko Lavinen return err; 1407b1ebe384SJarkko Lavinen } 1408b1ebe384SJarkko Lavinen 1409b1ebe384SJarkko Lavinen static int mmc_awake(struct mmc_host *host) 1410b1ebe384SJarkko Lavinen { 1411b1ebe384SJarkko Lavinen struct mmc_card *card = host->card; 1412b1ebe384SJarkko Lavinen int err = -ENOSYS; 1413b1ebe384SJarkko Lavinen 1414b1ebe384SJarkko Lavinen if (card && card->ext_csd.rev >= 3) { 1415b1ebe384SJarkko Lavinen err = mmc_card_sleepawake(host, 0); 1416b1ebe384SJarkko Lavinen if (err < 0) 1417b1ebe384SJarkko Lavinen pr_debug("%s: Error %d while awaking sleeping card", 1418b1ebe384SJarkko Lavinen mmc_hostname(host), err); 1419b1ebe384SJarkko Lavinen } 1420b1ebe384SJarkko Lavinen 1421b1ebe384SJarkko Lavinen return err; 1422b1ebe384SJarkko Lavinen } 1423b1ebe384SJarkko Lavinen 14249feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops = { 1425b1ebe384SJarkko Lavinen .awake = mmc_awake, 1426b1ebe384SJarkko Lavinen .sleep = mmc_sleep, 14279feae246SAdrian Hunter .remove = mmc_remove, 14289feae246SAdrian Hunter .detect = mmc_detect, 14299feae246SAdrian Hunter .suspend = NULL, 14309feae246SAdrian Hunter .resume = NULL, 1431eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1432d3049504SAdrian Hunter .alive = mmc_alive, 14339feae246SAdrian Hunter }; 14349feae246SAdrian Hunter 14359feae246SAdrian Hunter static const struct mmc_bus_ops mmc_ops_unsafe = { 1436b1ebe384SJarkko Lavinen .awake = mmc_awake, 1437b1ebe384SJarkko Lavinen .sleep = mmc_sleep, 14389feae246SAdrian Hunter .remove = mmc_remove, 14399feae246SAdrian Hunter .detect = mmc_detect, 14409feae246SAdrian Hunter .suspend = mmc_suspend, 14419feae246SAdrian Hunter .resume = mmc_resume, 1442eae1aeeeSAdrian Hunter .power_restore = mmc_power_restore, 1443d3049504SAdrian Hunter .alive = mmc_alive, 14449feae246SAdrian Hunter }; 14459feae246SAdrian Hunter 14469feae246SAdrian Hunter static void mmc_attach_bus_ops(struct mmc_host *host) 14479feae246SAdrian Hunter { 14489feae246SAdrian Hunter const struct mmc_bus_ops *bus_ops; 14499feae246SAdrian Hunter 145071d7d3d1SMatt Fleming if (!mmc_card_is_removable(host)) 14519feae246SAdrian Hunter bus_ops = &mmc_ops_unsafe; 14529feae246SAdrian Hunter else 14539feae246SAdrian Hunter bus_ops = &mmc_ops; 14549feae246SAdrian Hunter mmc_attach_bus(host, bus_ops); 14559feae246SAdrian Hunter } 14569feae246SAdrian Hunter 14576abaa0c9SPierre Ossman /* 14586abaa0c9SPierre Ossman * Starting point for MMC card init. 14596abaa0c9SPierre Ossman */ 1460807e8e40SAndy Ross int mmc_attach_mmc(struct mmc_host *host) 14616abaa0c9SPierre Ossman { 14626abaa0c9SPierre Ossman int err; 1463807e8e40SAndy Ross u32 ocr; 14646abaa0c9SPierre Ossman 14656abaa0c9SPierre Ossman BUG_ON(!host); 1466d84075c8SPierre Ossman WARN_ON(!host->claimed); 14676abaa0c9SPierre Ossman 146844669034SStefan Nilsson XK /* Set correct bus mode for MMC before attempting attach */ 146944669034SStefan Nilsson XK if (!mmc_host_is_spi(host)) 147044669034SStefan Nilsson XK mmc_set_bus_mode(host, MMC_BUSMODE_OPENDRAIN); 147144669034SStefan Nilsson XK 1472807e8e40SAndy Ross err = mmc_send_op_cond(host, 0, &ocr); 1473807e8e40SAndy Ross if (err) 1474807e8e40SAndy Ross return err; 1475807e8e40SAndy Ross 14769feae246SAdrian Hunter mmc_attach_bus_ops(host); 14778f230f45STakashi Iwai if (host->ocr_avail_mmc) 14788f230f45STakashi Iwai host->ocr_avail = host->ocr_avail_mmc; 14796abaa0c9SPierre Ossman 14806abaa0c9SPierre Ossman /* 1481af517150SDavid Brownell * We need to get OCR a different way for SPI. 1482af517150SDavid Brownell */ 1483af517150SDavid Brownell if (mmc_host_is_spi(host)) { 1484af517150SDavid Brownell err = mmc_spi_read_ocr(host, 1, &ocr); 1485af517150SDavid Brownell if (err) 1486af517150SDavid Brownell goto err; 1487af517150SDavid Brownell } 1488af517150SDavid Brownell 1489af517150SDavid Brownell /* 14906abaa0c9SPierre Ossman * Sanity check the voltages that the card claims to 14916abaa0c9SPierre Ossman * support. 14926abaa0c9SPierre Ossman */ 14936abaa0c9SPierre Ossman if (ocr & 0x7F) { 1494a3c76eb9SGirish K S pr_warning("%s: card claims to support voltages " 14956abaa0c9SPierre Ossman "below the defined range. These will be ignored.\n", 14966abaa0c9SPierre Ossman mmc_hostname(host)); 14976abaa0c9SPierre Ossman ocr &= ~0x7F; 14986abaa0c9SPierre Ossman } 14996abaa0c9SPierre Ossman 15006abaa0c9SPierre Ossman host->ocr = mmc_select_voltage(host, ocr); 15016abaa0c9SPierre Ossman 15026abaa0c9SPierre Ossman /* 15036abaa0c9SPierre Ossman * Can we support the voltage of the card? 15046abaa0c9SPierre Ossman */ 1505109b5bedSPierre Ossman if (!host->ocr) { 1506109b5bedSPierre Ossman err = -EINVAL; 15076abaa0c9SPierre Ossman goto err; 1508109b5bedSPierre Ossman } 15096abaa0c9SPierre Ossman 15106abaa0c9SPierre Ossman /* 15116abaa0c9SPierre Ossman * Detect and init the card. 15126abaa0c9SPierre Ossman */ 15138c75deaeSPierre Ossman err = mmc_init_card(host, host->ocr, NULL); 151417b0429dSPierre Ossman if (err) 15156abaa0c9SPierre Ossman goto err; 15166abaa0c9SPierre Ossman 15176abaa0c9SPierre Ossman mmc_release_host(host); 15184101c16aSPierre Ossman err = mmc_add_card(host->card); 1519807e8e40SAndy Ross mmc_claim_host(host); 15207ea239d9SPierre Ossman if (err) 15212986d0bfSPierre Ossman goto remove_card; 15227ea239d9SPierre Ossman 15237ea239d9SPierre Ossman return 0; 15247ea239d9SPierre Ossman 15252986d0bfSPierre Ossman remove_card: 1526807e8e40SAndy Ross mmc_release_host(host); 15276abaa0c9SPierre Ossman mmc_remove_card(host->card); 15282986d0bfSPierre Ossman mmc_claim_host(host); 1529807e8e40SAndy Ross host->card = NULL; 15307ea239d9SPierre Ossman err: 15317ea239d9SPierre Ossman mmc_detach_bus(host); 15327ea239d9SPierre Ossman 1533a3c76eb9SGirish K S pr_err("%s: error %d whilst initialising MMC card\n", 1534109b5bedSPierre Ossman mmc_hostname(host), err); 1535109b5bedSPierre Ossman 1536adf66a0dSPierre Ossman return err; 15377ea239d9SPierre Ossman } 1538