Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/mmc/sdio_ops.c |
| 3 | * |
| 4 | * Copyright 2006-2007 Pierre Ossman |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or (at |
| 9 | * your option) any later version. |
| 10 | */ |
| 11 | |
Pierre Ossman | 112c9db | 2007-07-06 13:35:01 +0200 | [diff] [blame] | 12 | #include <linux/scatterlist.h> |
| 13 | |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 14 | #include <linux/mmc/host.h> |
Pierre Ossman | b2bcc79 | 2007-05-22 20:25:21 +0200 | [diff] [blame] | 15 | #include <linux/mmc/card.h> |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 16 | #include <linux/mmc/mmc.h> |
| 17 | #include <linux/mmc/sdio.h> |
| 18 | |
| 19 | #include "core.h" |
| 20 | |
| 21 | int mmc_send_io_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr) |
| 22 | { |
| 23 | struct mmc_command cmd; |
| 24 | int i, err = 0; |
| 25 | |
| 26 | BUG_ON(!host); |
| 27 | |
| 28 | memset(&cmd, 0, sizeof(struct mmc_command)); |
| 29 | |
| 30 | cmd.opcode = SD_IO_SEND_OP_COND; |
| 31 | cmd.arg = ocr; |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 32 | cmd.flags = MMC_RSP_SPI_R4 | MMC_RSP_R4 | MMC_CMD_BCR; |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 33 | |
| 34 | for (i = 100; i; i--) { |
| 35 | err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES); |
| 36 | if (err) |
| 37 | break; |
| 38 | |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 39 | /* if we're just probing, do a single pass */ |
| 40 | if (ocr == 0) |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 41 | break; |
| 42 | |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 43 | /* otherwise wait until reset completes */ |
| 44 | if (mmc_host_is_spi(host)) { |
| 45 | /* |
| 46 | * Both R1_SPI_IDLE and MMC_CARD_BUSY indicate |
| 47 | * an initialized card under SPI, but some cards |
| 48 | * (Marvell's) only behave when looking at this |
| 49 | * one. |
| 50 | */ |
| 51 | if (cmd.resp[1] & MMC_CARD_BUSY) |
| 52 | break; |
| 53 | } else { |
| 54 | if (cmd.resp[0] & MMC_CARD_BUSY) |
| 55 | break; |
| 56 | } |
| 57 | |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 58 | err = -ETIMEDOUT; |
| 59 | |
| 60 | mmc_delay(10); |
| 61 | } |
| 62 | |
| 63 | if (rocr) |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 64 | *rocr = cmd.resp[mmc_host_is_spi(host) ? 1 : 0]; |
Pierre Ossman | 5c4e6f1 | 2007-05-21 20:23:20 +0200 | [diff] [blame] | 65 | |
| 66 | return err; |
| 67 | } |
| 68 | |
Pierre Ossman | b2bcc79 | 2007-05-22 20:25:21 +0200 | [diff] [blame] | 69 | int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn, |
| 70 | unsigned addr, u8 in, u8* out) |
| 71 | { |
| 72 | struct mmc_command cmd; |
| 73 | int err; |
| 74 | |
| 75 | BUG_ON(!card); |
| 76 | BUG_ON(fn > 7); |
| 77 | |
| 78 | memset(&cmd, 0, sizeof(struct mmc_command)); |
| 79 | |
| 80 | cmd.opcode = SD_IO_RW_DIRECT; |
| 81 | cmd.arg = write ? 0x80000000 : 0x00000000; |
| 82 | cmd.arg |= fn << 28; |
| 83 | cmd.arg |= (write && out) ? 0x08000000 : 0x00000000; |
| 84 | cmd.arg |= addr << 9; |
| 85 | cmd.arg |= in; |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 86 | cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_AC; |
Pierre Ossman | b2bcc79 | 2007-05-22 20:25:21 +0200 | [diff] [blame] | 87 | |
| 88 | err = mmc_wait_for_cmd(card->host, &cmd, 0); |
| 89 | if (err) |
| 90 | return err; |
| 91 | |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 92 | if (mmc_host_is_spi(card->host)) { |
| 93 | /* host driver already reported errors */ |
| 94 | } else { |
| 95 | if (cmd.resp[0] & R5_ERROR) |
| 96 | return -EIO; |
| 97 | if (cmd.resp[0] & R5_FUNCTION_NUMBER) |
| 98 | return -EINVAL; |
| 99 | if (cmd.resp[0] & R5_OUT_OF_RANGE) |
| 100 | return -ERANGE; |
| 101 | } |
Pierre Ossman | b2bcc79 | 2007-05-22 20:25:21 +0200 | [diff] [blame] | 102 | |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 103 | if (out) { |
| 104 | if (mmc_host_is_spi(card->host)) |
| 105 | *out = (cmd.resp[0] >> 8) & 0xFF; |
| 106 | else |
| 107 | *out = cmd.resp[0] & 0xFF; |
| 108 | } |
Pierre Ossman | b2bcc79 | 2007-05-22 20:25:21 +0200 | [diff] [blame] | 109 | |
| 110 | return 0; |
| 111 | } |
| 112 | |
Pierre Ossman | 112c9db | 2007-07-06 13:35:01 +0200 | [diff] [blame] | 113 | int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn, |
David Vrabel | eb65946 | 2007-08-08 14:24:21 +0100 | [diff] [blame] | 114 | unsigned addr, int incr_addr, u8 *buf, unsigned blocks, unsigned blksz) |
Pierre Ossman | 112c9db | 2007-07-06 13:35:01 +0200 | [diff] [blame] | 115 | { |
| 116 | struct mmc_request mrq; |
| 117 | struct mmc_command cmd; |
| 118 | struct mmc_data data; |
| 119 | struct scatterlist sg; |
| 120 | |
| 121 | BUG_ON(!card); |
| 122 | BUG_ON(fn > 7); |
David Vrabel | eb65946 | 2007-08-08 14:24:21 +0100 | [diff] [blame] | 123 | BUG_ON(blocks == 1 && blksz > 512); |
| 124 | WARN_ON(blocks == 0); |
| 125 | WARN_ON(blksz == 0); |
Pierre Ossman | 112c9db | 2007-07-06 13:35:01 +0200 | [diff] [blame] | 126 | |
| 127 | memset(&mrq, 0, sizeof(struct mmc_request)); |
| 128 | memset(&cmd, 0, sizeof(struct mmc_command)); |
| 129 | memset(&data, 0, sizeof(struct mmc_data)); |
| 130 | |
| 131 | mrq.cmd = &cmd; |
| 132 | mrq.data = &data; |
| 133 | |
| 134 | cmd.opcode = SD_IO_RW_EXTENDED; |
| 135 | cmd.arg = write ? 0x80000000 : 0x00000000; |
| 136 | cmd.arg |= fn << 28; |
David Vrabel | eb65946 | 2007-08-08 14:24:21 +0100 | [diff] [blame] | 137 | cmd.arg |= incr_addr ? 0x04000000 : 0x00000000; |
Pierre Ossman | 112c9db | 2007-07-06 13:35:01 +0200 | [diff] [blame] | 138 | cmd.arg |= addr << 9; |
David Vrabel | eb65946 | 2007-08-08 14:24:21 +0100 | [diff] [blame] | 139 | if (blocks == 1 && blksz <= 512) |
| 140 | cmd.arg |= (blksz == 512) ? 0 : blksz; /* byte mode */ |
| 141 | else |
| 142 | cmd.arg |= 0x08000000 | blocks; /* block mode */ |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 143 | cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC; |
Pierre Ossman | 112c9db | 2007-07-06 13:35:01 +0200 | [diff] [blame] | 144 | |
David Vrabel | eb65946 | 2007-08-08 14:24:21 +0100 | [diff] [blame] | 145 | data.blksz = blksz; |
| 146 | data.blocks = blocks; |
Pierre Ossman | 112c9db | 2007-07-06 13:35:01 +0200 | [diff] [blame] | 147 | data.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ; |
| 148 | data.sg = &sg; |
| 149 | data.sg_len = 1; |
| 150 | |
David Vrabel | eb65946 | 2007-08-08 14:24:21 +0100 | [diff] [blame] | 151 | sg_init_one(&sg, buf, blksz * blocks); |
Pierre Ossman | 112c9db | 2007-07-06 13:35:01 +0200 | [diff] [blame] | 152 | |
| 153 | mmc_set_data_timeout(&data, card); |
| 154 | |
| 155 | mmc_wait_for_req(card->host, &mrq); |
| 156 | |
| 157 | if (cmd.error) |
| 158 | return cmd.error; |
| 159 | if (data.error) |
| 160 | return data.error; |
| 161 | |
David Brownell | af51715 | 2007-08-08 09:11:32 -0700 | [diff] [blame] | 162 | if (mmc_host_is_spi(card->host)) { |
| 163 | /* host driver already reported errors */ |
| 164 | } else { |
| 165 | if (cmd.resp[0] & R5_ERROR) |
| 166 | return -EIO; |
| 167 | if (cmd.resp[0] & R5_FUNCTION_NUMBER) |
| 168 | return -EINVAL; |
| 169 | if (cmd.resp[0] & R5_OUT_OF_RANGE) |
| 170 | return -ERANGE; |
| 171 | } |
Pierre Ossman | 112c9db | 2007-07-06 13:35:01 +0200 | [diff] [blame] | 172 | |
| 173 | return 0; |
| 174 | } |
| 175 | |