sd.c revision f2119df6b764609af4baceb68caf1e848c1c8aa7
17ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 270f10482c668301c483acded13bf68780ad352b9Pierre Ossman * linux/drivers/mmc/core/sd.c 37ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * 47ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Copyright (C) 2003-2004 Russell King, All Rights Reserved. 57ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * SD support Copyright (C) 2004 Ian Molton, All Rights Reserved. 67ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved. 77ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * 87ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * This program is free software; you can redistribute it and/or modify 97ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * it under the terms of the GNU General Public License version 2 as 107ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * published by the Free Software Foundation. 117ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 127ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 137ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/err.h> 145a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 157ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 167ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/host.h> 177ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/card.h> 187ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include <linux/mmc/mmc.h> 193373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman#include <linux/mmc/sd.h> 207ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 217ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "core.h" 224101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman#include "bus.h" 237ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "mmc_ops.h" 24ce1014965ae2538e7447b19879bd0e8109690b79Mark Brown#include "sd.h" 257ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#include "sd_ops.h" 267ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 277ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tran_exp[] = { 287ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 10000, 100000, 1000000, 10000000, 297ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 0, 0, 0 307ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 317ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 327ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned char tran_mant[] = { 337ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 347ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 357ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 367ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 377ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tacc_exp[] = { 387ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 397ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 407ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 417ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanstatic const unsigned int tacc_mant[] = { 427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 0, 10, 12, 13, 15, 20, 25, 30, 437ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 35, 40, 45, 50, 55, 60, 70, 80, 447ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman}; 457ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 467ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman#define UNSTUFF_BITS(resp,start,size) \ 477ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman ({ \ 487ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __size = size; \ 497ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \ 507ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __off = 3 - ((start) / 32); \ 517ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman const int __shft = (start) & 31; \ 527ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 __res; \ 537ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman \ 547ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res = resp[__off] >> __shft; \ 557ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (__size + __shft > 32) \ 567ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res |= resp[__off-1] << ((32 - __shft) % 32); \ 577ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman __res & __mask; \ 587ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman }) 597ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 607ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 617ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given the decoded CSD structure, decode the raw CID to our CID structure. 627ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 6371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawvoid mmc_decode_cid(struct mmc_card *card) 647ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 657ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 *resp = card->raw_cid; 667ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 677ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman memset(&card->cid, 0, sizeof(struct mmc_cid)); 687ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 707ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * SD doesn't currently have a version field so we will 717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * have to assume we can parse this. 727ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 737ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.manfid = UNSTUFF_BITS(resp, 120, 8); 747ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.oemid = UNSTUFF_BITS(resp, 104, 16); 757ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8); 767ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8); 777ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8); 787ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8); 797ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8); 807ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.hwrev = UNSTUFF_BITS(resp, 60, 4); 817ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.fwrev = UNSTUFF_BITS(resp, 56, 4); 827ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.serial = UNSTUFF_BITS(resp, 24, 32); 837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.year = UNSTUFF_BITS(resp, 12, 8); 847ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.month = UNSTUFF_BITS(resp, 8, 4); 857ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 867ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->cid.year += 2000; /* SD cards year offset */ 877ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 887ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 897ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 907ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given a 128-bit response, decode to our card CSD structure. 917ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 92bd766312618d2ecc85bce663f95faec601447ecbPierre Ossmanstatic int mmc_decode_csd(struct mmc_card *card) 937ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 947ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman struct mmc_csd *csd = &card->csd; 957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman unsigned int e, m, csd_struct; 967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 *resp = card->raw_csd; 977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 987ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd_struct = UNSTUFF_BITS(resp, 126, 2); 997ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1007ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman switch (csd_struct) { 1017ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman case 0: 1027ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 115, 4); 1037ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 112, 3); 1047ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10; 1057ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100; 1067ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1077ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1087ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1097ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1107ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1117ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1127ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 47, 3); 1137ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 62, 12); 1147ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->capacity = (1 + m) << (e + 2); 1157ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1167ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4); 1177ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_partial = UNSTUFF_BITS(resp, 79, 1); 1187ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_misalign = UNSTUFF_BITS(resp, 78, 1); 1197ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_misalign = UNSTUFF_BITS(resp, 77, 1); 1207ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3); 1217ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4); 1227ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_partial = UNSTUFF_BITS(resp, 21, 1); 123dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 124dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (UNSTUFF_BITS(resp, 46, 1)) { 125dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size = 1; 126dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } else if (csd->write_blkbits >= 9) { 127dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size = UNSTUFF_BITS(resp, 39, 7) + 1; 128dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size <<= csd->write_blkbits - 9; 129dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 1307ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman break; 1317ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman case 1: 1327ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 1337ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * This is a block-addressed SDHC card. Most 1347ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * interesting fields are unused and have fixed 1357ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * values. To avoid getting tripped by buggy cards, 1367ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * we assume those fixed values ourselves. 1377ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 1387ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_card_set_blockaddr(card); 1397ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1407ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_ns = 0; /* Unused */ 1417ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->tacc_clks = 0; /* Unused */ 1427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1437ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 99, 4); 1447ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman e = UNSTUFF_BITS(resp, 96, 3); 1457ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->max_dtr = tran_exp[e] * tran_mant[m]; 1467ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->cmdclass = UNSTUFF_BITS(resp, 84, 12); 1477ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1487ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman m = UNSTUFF_BITS(resp, 48, 22); 1497ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->capacity = (1 + m) << 10; 1507ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1517ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_blkbits = 9; 1527ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_partial = 0; 1537ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_misalign = 0; 1547ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->read_misalign = 0; 1557ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->r2w_factor = 4; /* Unused */ 1567ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_blkbits = 9; 1577ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman csd->write_partial = 0; 158dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter csd->erase_size = 1; 1597ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman break; 1607ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman default: 161facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman printk(KERN_ERR "%s: unrecognised CSD structure version %d\n", 1627ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host), csd_struct); 163bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return -EINVAL; 1647ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 165bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 166dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->erase_size = csd->erase_size; 167dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 168bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return 0; 1697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 1707ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1717ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 1727ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Given a 64-bit response, decode to our card SCR structure. 1737ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 174bd766312618d2ecc85bce663f95faec601447ecbPierre Ossmanstatic int mmc_decode_scr(struct mmc_card *card) 1757ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 1767ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman struct sd_scr *scr = &card->scr; 1777ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman unsigned int scr_struct; 1787ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u32 resp[4]; 1797ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1807ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman resp[3] = card->raw_scr[1]; 1817ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman resp[2] = card->raw_scr[0]; 1827ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr_struct = UNSTUFF_BITS(resp, 60, 4); 1847ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (scr_struct != 0) { 185facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman printk(KERN_ERR "%s: unrecognised SCR structure version %d\n", 1867ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host), scr_struct); 187bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return -EINVAL; 1887ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 1897ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 1907ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr->sda_vsn = UNSTUFF_BITS(resp, 56, 4); 1917ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman scr->bus_widths = UNSTUFF_BITS(resp, 48, 4); 192bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 193dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (UNSTUFF_BITS(resp, 55, 1)) 194dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->erased_byte = 0xFF; 195dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter else 196dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->erased_byte = 0x0; 197dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 198bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman return 0; 1997ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 2007ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2017ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 202dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * Fetch and process SD Status register. 203dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter */ 204dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunterstatic int mmc_read_ssr(struct mmc_card *card) 205dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter{ 206dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter unsigned int au, es, et, eo; 207dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter int err, i; 208dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter u32 *ssr; 209dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 210dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (!(card->csd.cmdclass & CCC_APP_SPEC)) { 211dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter printk(KERN_WARNING "%s: card lacks mandatory SD Status " 212dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter "function.\n", mmc_hostname(card->host)); 213dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return 0; 214dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 215dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 216dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter ssr = kmalloc(64, GFP_KERNEL); 217dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (!ssr) 218dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return -ENOMEM; 219dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 220dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter err = mmc_app_sd_status(card, ssr); 221dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (err) { 222dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter printk(KERN_WARNING "%s: problem reading SD Status " 223dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter "register.\n", mmc_hostname(card->host)); 224dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter err = 0; 225dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter goto out; 226dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 227dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 228dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter for (i = 0; i < 16; i++) 229dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter ssr[i] = be32_to_cpu(ssr[i]); 230dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 231dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter /* 232dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * UNSTUFF_BITS only works with four u32s so we have to offset the 233dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * bitfield positions accordingly. 234dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter */ 235dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter au = UNSTUFF_BITS(ssr, 428 - 384, 4); 236dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (au > 0 || au <= 9) { 237dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->ssr.au = 1 << (au + 4); 238dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter es = UNSTUFF_BITS(ssr, 408 - 384, 16); 239dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter et = UNSTUFF_BITS(ssr, 402 - 384, 6); 240dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter eo = UNSTUFF_BITS(ssr, 400 - 384, 2); 241dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (es && et) { 242dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->ssr.erase_timeout = (et * 1000) / es; 243dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter card->ssr.erase_offset = eo * 1000; 244dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 245dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } else { 246dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter printk(KERN_WARNING "%s: SD Status: Invalid Allocation Unit " 247dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter "size.\n", mmc_hostname(card->host)); 248dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter } 249dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunterout: 250dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter kfree(ssr); 251dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return err; 252dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter} 253dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 254dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter/* 2551addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman * Fetches and decodes switch information 2567ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 2571addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossmanstatic int mmc_read_switch(struct mmc_card *card) 2587ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 2597ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman int err; 2607ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman u8 *status; 2617ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2623373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (card->scr.sda_vsn < SCR_SPEC_VER_1) 26317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 2643373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 2653373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (!(card->csd.cmdclass & CCC_SWITCH)) { 2663373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman printk(KERN_WARNING "%s: card lacks mandatory switch " 2673373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman "function, performance might suffer.\n", 2683373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman mmc_hostname(card->host)); 26917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 2703373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman } 2713373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 27217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = -EIO; 2737ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2747ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman status = kmalloc(64, GFP_KERNEL); 2757ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (!status) { 276facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman printk(KERN_ERR "%s: could not allocate a buffer for " 277facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman "switch capabilities.\n", mmc_hostname(card->host)); 27817b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return -ENOMEM; 2797ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 2807ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2817ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman err = mmc_sd_switch(card, 0, 0, 1, status); 28217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) { 283d08ebeddfb3293fa4bdfca9c610daf1e8ec8b233Wolfgang Muees /* If the host or the card can't do the switch, 284d08ebeddfb3293fa4bdfca9c610daf1e8ec8b233Wolfgang Muees * fail more gracefully. */ 285d08ebeddfb3293fa4bdfca9c610daf1e8ec8b233Wolfgang Muees if ((err != -EINVAL) 286d08ebeddfb3293fa4bdfca9c610daf1e8ec8b233Wolfgang Muees && (err != -ENOSYS) 287d08ebeddfb3293fa4bdfca9c610daf1e8ec8b233Wolfgang Muees && (err != -EFAULT)) 288adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman goto out; 289adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman 2903373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman printk(KERN_WARNING "%s: problem reading switch " 2913373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman "capabilities, performance might suffer.\n", 2923373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman mmc_hostname(card->host)); 29317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = 0; 294adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman 2957ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto out; 2967ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 2977ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 2987ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (status[13] & 0x02) 2997ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman card->sw_caps.hs_max_dtr = 50000000; 3007ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3011addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossmanout: 3021addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman kfree(status); 3031addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3041addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman return err; 3051addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman} 3061addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3071addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman/* 3081addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman * Test if the card supports high-speed mode and, if so, switch to it. 3091addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman */ 31071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawint mmc_sd_switch_hs(struct mmc_card *card) 3111addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman{ 3121addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman int err; 3131addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman u8 *status; 3141addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3153373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (card->scr.sda_vsn < SCR_SPEC_VER_1) 31617b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3173373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 3183373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman if (!(card->csd.cmdclass & CCC_SWITCH)) 31917b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3203373c0ae6a51085b10a95fd9d2214a9995ef7563Pierre Ossman 3211addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (!(card->host->caps & MMC_CAP_SD_HIGHSPEED)) 32217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3231addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3241addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (card->sw_caps.hs_max_dtr == 0) 32517b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 3261addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 32717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman err = -EIO; 3281addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3291addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman status = kmalloc(64, GFP_KERNEL); 3301addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman if (!status) { 331facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman printk(KERN_ERR "%s: could not allocate a buffer for " 332facba9179e3cd5fa91ff40bbc555c5cd4c101092Pierre Ossman "switch capabilities.\n", mmc_hostname(card->host)); 33317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return -ENOMEM; 3341addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman } 3351addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 3367ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman err = mmc_sd_switch(card, 1, 0, 1, status); 33717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 3387ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto out; 3397ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3407ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if ((status[16] & 0xF) != 1) { 3417ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman printk(KERN_WARNING "%s: Problem switching card " 3427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman "into high-speed mode!\n", 3437ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_hostname(card->host)); 34471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = 0; 3457ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } else { 34671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = 1; 3477ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 3487ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3497ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanout: 3507ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman kfree(status); 3517ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 3527ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman return err; 3537ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 3547ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 35551ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(cid, "%08x%08x%08x%08x\n", card->raw_cid[0], card->raw_cid[1], 35651ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman card->raw_cid[2], card->raw_cid[3]); 35751ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(csd, "%08x%08x%08x%08x\n", card->raw_csd[0], card->raw_csd[1], 35851ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman card->raw_csd[2], card->raw_csd[3]); 35951ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(scr, "%08x%08x\n", card->raw_scr[0], card->raw_scr[1]); 36051ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(date, "%02d/%04d\n", card->cid.month, card->cid.year); 361dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian HunterMMC_DEV_ATTR(erase_size, "%u\n", card->erase_size << 9); 362dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian HunterMMC_DEV_ATTR(preferred_erase_size, "%u\n", card->pref_erase << 9); 36351ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(fwrev, "0x%x\n", card->cid.fwrev); 36451ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(hwrev, "0x%x\n", card->cid.hwrev); 36551ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid); 36651ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(name, "%s\n", card->cid.prod_name); 36751ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid); 36851ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre OssmanMMC_DEV_ATTR(serial, "0x%08x\n", card->cid.serial); 36951ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 37051ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 37151ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossmanstatic struct attribute *sd_std_attrs[] = { 37251ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_cid.attr, 37351ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_csd.attr, 37451ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_scr.attr, 37551ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_date.attr, 376dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter &dev_attr_erase_size.attr, 377dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter &dev_attr_preferred_erase_size.attr, 37851ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_fwrev.attr, 37951ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_hwrev.attr, 38051ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_manfid.attr, 38151ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_name.attr, 38251ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_oemid.attr, 38351ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &dev_attr_serial.attr, 38451ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman NULL, 38551ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman}; 38651ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 38751ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossmanstatic struct attribute_group sd_std_attr_group = { 38851ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman .attrs = sd_std_attrs, 38951ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman}; 39051ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 391a4dbd6740df0872cdf0a86841f75beec8381964dDavid Brownellstatic const struct attribute_group *sd_attr_groups[] = { 39251ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman &sd_std_attr_group, 39351ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman NULL, 39451ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman}; 39551ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 39671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawstruct device_type sd_type = { 39751ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman .groups = sd_attr_groups, 39851ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman}; 39951ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman 4007ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman/* 40171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Fetch CID from card. 4027ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 40371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawint mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid) 4047ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman{ 4057ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman int err; 406f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath u32 rocr; 4077ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 4087ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 4097ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Since we're changing the OCR value, we seem to 4107ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * need to tell some cards to go back to the idle 4117ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * state. We wait 1ms to give cards time to 4127ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * respond. 4137ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 4147ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_go_idle(host); 4157ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 4167ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 4177ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * If SD_SEND_IF_COND indicates an SD 2.0 4187ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * compliant card and we should set bit 30 4197ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * of the ocr to indicate that we can handle 4207ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * block-addressed SDHC cards. 4217ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 4226abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_send_if_cond(host, ocr); 42317b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (!err) 424f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr |= SD_OCR_CCS; 4257ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 426f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 427f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * If the host supports one of UHS-I modes, request the card 428f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * to switch to 1.8V signaling level. 429f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 430f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (host->caps & (MMC_CAP_UHS_SDR12 | MMC_CAP_UHS_SDR25 | 431f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_SDR104 | MMC_CAP_UHS_DDR50)) 432f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr |= SD_OCR_S18R; 433f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 434f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* If the host can supply more than 150mA, XPC should be set to 1. */ 435f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (host->caps & (MMC_CAP_SET_XPC_330 | MMC_CAP_SET_XPC_300 | 436f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath MMC_CAP_SET_XPC_180)) 437f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr |= SD_OCR_XPC; 438f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 439f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nathtry_again: 440f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath err = mmc_send_app_op_cond(host, ocr, &rocr); 44117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 44271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 4437ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 444f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* 445f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * In case CCS and S18A in the response is set, start Signal Voltage 446f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath * Switch procedure. SPI mode doesn't support CMD11. 447f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath */ 448f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (!mmc_host_is_spi(host) && ((rocr & 0x41000000) == 0x41000000)) { 449f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_180); 450f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (err) { 451f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath ocr &= ~SD_OCR_S18R; 452f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath goto try_again; 453f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 454f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath } 455f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 456af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (mmc_host_is_spi(host)) 457af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_send_cid(host, cid); 458af51715079e7fb6b290e1881d63d815dc4de5011David Brownell else 459af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_all_send_cid(host, cid); 46071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 46171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 46271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 46371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 46471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawint mmc_sd_get_csd(struct mmc_host *host, struct mmc_card *card) 46571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 46671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int err; 46771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 46871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 46971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Fetch CSD from card. 47071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 47171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_send_csd(card, card->raw_csd); 47217b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 47371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 4747ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 47571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_decode_csd(card); 47671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 47771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 47871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 47971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return 0; 48071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 48171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 48271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawint mmc_sd_setup_card(struct mmc_host *host, struct mmc_card *card, 48371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw bool reinit) 48471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 48571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int err; 48671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 48771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (!reinit) { 48871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 48971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Fetch SCR from card. 49071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 49171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_app_send_scr(card, card->raw_scr); 49271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 49371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 49471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 49571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_decode_scr(card); 49671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 49771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 49871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 49971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 500dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter * Fetch and process SD Status register. 501dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter */ 502dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter err = mmc_read_ssr(card); 503dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter if (err) 504dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter return err; 505dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 506dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter /* Erase init depends on CSD and SSR */ 507dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter mmc_init_erase(card); 508dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter 509dfe86cba7676d58db8de7e623f5e72f1b0d3ca35Adrian Hunter /* 51071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Fetch switch information from card. 51171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 51271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_read_switch(card); 51371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 51471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 51571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 51671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 51771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 51871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * For SPI, enable CRC as appropriate. 51971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * This CRC enable is located AFTER the reading of the 52071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * card registers because some SDHC cards are not able 52171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * to provide valid CRCs for non-512-byte blocks. 52271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 52371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (mmc_host_is_spi(host)) { 52471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_spi_set_crc(host, use_spi_crc); 52571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 52671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 52771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 52871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 52971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw /* 53071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Check if read-only switch is active. 53171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 53271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (!reinit) { 53371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int ro = -1; 53471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 53571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (host->ops->get_ro) 53671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw ro = host->ops->get_ro(host); 53771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 53871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (ro < 0) { 53971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw printk(KERN_WARNING "%s: host does not " 54071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw "support reading read-only " 54171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw "switch. assuming write-enable.\n", 54271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_hostname(host)); 54371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } else if (ro > 0) { 54471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_card_set_readonly(card); 545adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman } 54671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 54771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 54871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return 0; 54971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 55071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 55171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawunsigned mmc_sd_get_max_clock(struct mmc_card *card) 55271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 55371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw unsigned max_dtr = (unsigned int)-1; 55471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 55571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (mmc_card_highspeed(card)) { 55671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (max_dtr > card->sw_caps.hs_max_dtr) 55771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw max_dtr = card->sw_caps.hs_max_dtr; 55871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } else if (max_dtr > card->csd.max_dtr) { 55971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw max_dtr = card->csd.max_dtr; 56071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw } 56171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 56271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return max_dtr; 56371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 56471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 56571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawvoid mmc_sd_go_highspeed(struct mmc_card *card) 56671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 56771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_card_set_highspeed(card); 56871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_set_timing(card->host, MMC_TIMING_SD_HS); 56971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw} 57071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 57171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw/* 57271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Handle the detection and initialisation of a card. 57371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * 57471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * In the case of a resume, "oldcard" will contain the card 57571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * we're trying to reinitialise. 57671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw */ 57771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslawstatic int mmc_sd_init_card(struct mmc_host *host, u32 ocr, 57871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw struct mmc_card *oldcard) 57971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw{ 58071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw struct mmc_card *card; 58171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw int err; 58271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw u32 cid[4]; 58371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 58471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw BUG_ON(!host); 58571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw WARN_ON(!host->claimed); 58671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 58771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_sd_get_cid(host, ocr, cid); 58871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 58971578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 59071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw 59171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (oldcard) { 59271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) 59371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return -ENOENT; 5947ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 5956abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman card = oldcard; 5966abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } else { 5976abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 5986abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Allocate card structure. 5996abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 60051ec92e295d563dd5712d198a7e46c2ae5ccccb2Pierre Ossman card = mmc_alloc_card(host, &sd_type); 60171578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (IS_ERR(card)) 60271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return PTR_ERR(card); 6036abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6046abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman card->type = MMC_TYPE_SD; 6056abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman memcpy(card->raw_cid, cid, sizeof(card->raw_cid)); 6066abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 6077ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 6087ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 609af51715079e7fb6b290e1881d63d815dc4de5011David Brownell * For native busses: get card RCA and quit open drain mode. 6107ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 611af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (!mmc_host_is_spi(host)) { 612af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_send_relative_addr(host, &card->rca); 613af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (err) 61471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 6157ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 616af51715079e7fb6b290e1881d63d815dc4de5011David Brownell mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL); 617af51715079e7fb6b290e1881d63d815dc4de5011David Brownell } 6187ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 6196abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (!oldcard) { 62071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_sd_get_csd(host, card); 62117b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 62271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 623bd766312618d2ecc85bce663f95faec601447ecbPierre Ossman 6246abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_decode_cid(card); 6256abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 6267ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 6277ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 6286abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Select card, as all following commands rely on that. 6297ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 630af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (!mmc_host_is_spi(host)) { 631af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_select_card(card); 632af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (err) 63371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw return err; 6346abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 6351addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman 63671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_sd_setup_card(host, card, oldcard != NULL); 63771578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err) 63871578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw goto free_card; 6399d9f25c036dd584db175552a7d162403d3ab54b3Wolfgang Muees 6409d9f25c036dd584db175552a7d162403d3ab54b3Wolfgang Muees /* 6411addfcdbe4b23a20f28a097c2469d9f0c21bef23Pierre Ossman * Attempt to change to high-speed (if supported) 6427ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 64371578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw err = mmc_sd_switch_hs(card); 64471578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw if (err > 0) 64571578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_sd_go_highspeed(card); 64671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw else if (err) 6477ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto free_card; 6487ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 6497ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 65071578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw * Set bus speed. 6517ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 65271578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw mmc_set_clock(host, mmc_sd_get_max_clock(card)); 6537ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 6547ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman /* 6557ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman * Switch to wider bus (if supported). 6567ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman */ 65771651297a448289353b2493c6c3c183f9be7be7cPierre Ossman if ((host->caps & MMC_CAP_4_BIT_DATA) && 6587ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) { 6597ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4); 66017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 6617ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman goto free_card; 6627ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 6637ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_set_bus_width(host, MMC_BUS_WIDTH_4); 6647ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman } 6657ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 66671578a1eaa7b8b9bd3efc9c97d77ef2b63d5dc2bMichal Miroslaw host->card = card; 66717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman return 0; 6686abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6696abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanfree_card: 6706abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (!oldcard) 6716abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(card); 6726abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 673adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman return err; 6746abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 6756abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6766abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 6776abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Host is being removed. Free up the current card. 6786abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 6796abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic void mmc_sd_remove(struct mmc_host *host) 6806abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 6816abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 6826abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 6836abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6846abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(host->card); 6856abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman host->card = NULL; 6866abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 6876abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6886abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 6896abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Card detection callback from host. 6906abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 6916abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic void mmc_sd_detect(struct mmc_host *host) 6926abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 6936abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman int err; 6946abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6956abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 6966abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 6976abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 6986abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 6996abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 7006abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 7016abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Just check if our card has been removed. 7026abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 7036abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_send_status(host->card, NULL); 7047ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 7057ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_release_host(host); 7067ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 70717b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) { 7084101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman mmc_sd_remove(host); 7096abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 7106abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 7116abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_detach_bus(host); 7126abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_release_host(host); 7136abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 7146abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 7156abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 7166abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 7176abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Suspend callback from host. 7186abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 71995cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitrestatic int mmc_sd_suspend(struct mmc_host *host) 7206abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 7216abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 7226abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 7236abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 7246abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 725af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (!mmc_host_is_spi(host)) 726af51715079e7fb6b290e1881d63d815dc4de5011David Brownell mmc_deselect_cards(host); 7276abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman host->card->state &= ~MMC_STATE_HIGHSPEED; 7286abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_release_host(host); 72995cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitre 73095cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitre return 0; 7316abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 7326abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 7336abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 7346abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Resume callback from host. 7356abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * 7366abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * This function tries to determine if the same card is still present 7376abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * and, if so, restore all state to it. 7386abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 73995cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitrestatic int mmc_sd_resume(struct mmc_host *host) 7406abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 7416abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman int err; 7426abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 7436abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 7446abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host->card); 7456abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 7466abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_claim_host(host); 7476abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_sd_init_card(host, host->ocr, host->card); 7482986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman mmc_release_host(host); 7492986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman 75095cdfb72b9bc568803f395c266152c71b034b461Nicolas Pitre return err; 7516abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman} 7526abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 75312ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohenstatic int mmc_sd_power_restore(struct mmc_host *host) 754eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter{ 75512ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen int ret; 75612ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen 757eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter host->card->state &= ~MMC_STATE_HIGHSPEED; 758eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter mmc_claim_host(host); 75912ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen ret = mmc_sd_init_card(host, host->ocr, host->card); 760eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter mmc_release_host(host); 76112ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen 76212ae637f081a7a05144af65802a7b492b9162660Ohad Ben-Cohen return ret; 763eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter} 764eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter 7656abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossmanstatic const struct mmc_bus_ops mmc_sd_ops = { 7666abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .remove = mmc_sd_remove, 7676abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .detect = mmc_sd_detect, 7689feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter .suspend = NULL, 7699feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter .resume = NULL, 770eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter .power_restore = mmc_sd_power_restore, 7719feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter}; 7729feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter 7739feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunterstatic const struct mmc_bus_ops mmc_sd_ops_unsafe = { 7749feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter .remove = mmc_sd_remove, 7759feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter .detect = mmc_sd_detect, 7766abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .suspend = mmc_sd_suspend, 7776abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman .resume = mmc_sd_resume, 778eae1aeeed852aae37621b82a9e7f6c05096a18fdAdrian Hunter .power_restore = mmc_sd_power_restore, 7796abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman}; 7806abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 7819feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunterstatic void mmc_sd_attach_bus_ops(struct mmc_host *host) 7829feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter{ 7839feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter const struct mmc_bus_ops *bus_ops; 7849feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter 78571d7d3d190fe77588269a8febf93cd739bd91eb3Matt Fleming if (!mmc_card_is_removable(host)) 7869feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter bus_ops = &mmc_sd_ops_unsafe; 7879feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter else 7889feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter bus_ops = &mmc_sd_ops; 7899feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter mmc_attach_bus(host, bus_ops); 7909feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter} 7919feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter 7926abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman/* 7936abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Starting point for SD card init. 7946abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 795807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Rossint mmc_attach_sd(struct mmc_host *host) 7966abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman{ 7976abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman int err; 798807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross u32 ocr; 7996abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 8006abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman BUG_ON(!host); 801d84075c8aed771d47d7ac6e96b098559da361c25Pierre Ossman WARN_ON(!host->claimed); 8026abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 803f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath /* Make sure we are at 3.3V signalling voltage */ 804f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330); 805f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath if (err) 806f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath return err; 807f2119df6b764609af4baceb68caf1e848c1c8aa7Arindam Nath 808807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross err = mmc_send_app_op_cond(host, 0, &ocr); 809807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross if (err) 810807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross return err; 811807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross 8129feae246963c648b212abad0f0eb8938de5f5fe5Adrian Hunter mmc_sd_attach_bus_ops(host); 8138f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if (host->ocr_avail_sd) 8148f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai host->ocr_avail = host->ocr_avail_sd; 8156abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 8166abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 817af51715079e7fb6b290e1881d63d815dc4de5011David Brownell * We need to get OCR a different way for SPI. 818af51715079e7fb6b290e1881d63d815dc4de5011David Brownell */ 819af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (mmc_host_is_spi(host)) { 820af51715079e7fb6b290e1881d63d815dc4de5011David Brownell mmc_go_idle(host); 821af51715079e7fb6b290e1881d63d815dc4de5011David Brownell 822af51715079e7fb6b290e1881d63d815dc4de5011David Brownell err = mmc_spi_read_ocr(host, 0, &ocr); 823af51715079e7fb6b290e1881d63d815dc4de5011David Brownell if (err) 824af51715079e7fb6b290e1881d63d815dc4de5011David Brownell goto err; 825af51715079e7fb6b290e1881d63d815dc4de5011David Brownell } 826af51715079e7fb6b290e1881d63d815dc4de5011David Brownell 827af51715079e7fb6b290e1881d63d815dc4de5011David Brownell /* 8286abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Sanity check the voltages that the card claims to 8296abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * support. 8306abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 8316abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman if (ocr & 0x7F) { 8326abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman printk(KERN_WARNING "%s: card claims to support voltages " 8336abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman "below the defined range. These will be ignored.\n", 8346abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_hostname(host)); 8356abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman ocr &= ~0x7F; 8366abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 8376abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 8388f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai if ((ocr & MMC_VDD_165_195) && 8398f230f454fe04ba326ffaead3a6b88dcf44eaf4bTakashi Iwai !(host->ocr_avail_sd & MMC_VDD_165_195)) { 8406abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman printk(KERN_WARNING "%s: SD card claims to support the " 8416abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman "incompletely defined 'low voltage range'. This " 8426abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman "will be ignored.\n", mmc_hostname(host)); 8436abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman ocr &= ~MMC_VDD_165_195; 8446abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman } 8456abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 8466abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman host->ocr = mmc_select_voltage(host, ocr); 8476abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 8486abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 8496abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Can we support the voltage(s) of the card(s)? 8506abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 851109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman if (!host->ocr) { 852109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman err = -EINVAL; 8536abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto err; 854109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman } 8556abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 8566abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman /* 8576abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman * Detect and init the card. 8586abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman */ 8596abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman err = mmc_sd_init_card(host, host->ocr, NULL); 86017b0429dde9ab60f9cee8e07ab28c7dc6cfe6efdPierre Ossman if (err) 8616abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman goto err; 8626abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman 8636abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_release_host(host); 8644101c16a910b15afd190c6bc7d45864461cf5c25Pierre Ossman err = mmc_add_card(host->card); 865807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross mmc_claim_host(host); 8667ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman if (err) 8672986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman goto remove_card; 8687ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 8697ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman return 0; 8707ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 8712986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossmanremove_card: 872807e8e40673d9628fa7dcdd14423424b4ee5f43bAndy Ross mmc_release_host(host); 8736abaa0c9fec563538f2a28a682af8c89bb9b125cPierre Ossman mmc_remove_card(host->card); 8747ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman host->card = NULL; 8752986d0bf23d97d68804ccfa80965073ccf1af242Pierre Ossman mmc_claim_host(host); 8767ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossmanerr: 8777ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman mmc_detach_bus(host); 8787ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 879109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman printk(KERN_ERR "%s: error %d whilst initialising SD card\n", 880109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman mmc_hostname(host), err); 881109b5bed18441599b5ab0e1f3623efa5715a4703Pierre Ossman 882adf66a0dc5e8be8d4e64f3c2114f9b175558235bPierre Ossman return err; 8837ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman} 8847ea239d9e6d6993469a6a8ca83ff23834dfc3fcePierre Ossman 885