2 * linux/drivers/mmc/sdio_ops.c
4 * Copyright 2006-2007 Pierre Ossman
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.
12 #include <linux/scatterlist.h>
14 #include <linux/mmc/host.h>
15 #include <linux/mmc/card.h>
16 #include <linux/mmc/mmc.h>
17 #include <linux/mmc/sdio.h>
22 int mmc_send_io_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
24 struct mmc_command cmd;
29 memset(&cmd, 0, sizeof(struct mmc_command));
31 cmd.opcode = SD_IO_SEND_OP_COND;
33 cmd.flags = MMC_RSP_SPI_R4 | MMC_RSP_R4 | MMC_CMD_BCR;
35 for (i = 100; i; i--) {
36 err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
40 /* if we're just probing, do a single pass */
44 /* otherwise wait until reset completes */
45 if (mmc_host_is_spi(host)) {
47 * Both R1_SPI_IDLE and MMC_CARD_BUSY indicate
48 * an initialized card under SPI, but some cards
49 * (Marvell's) only behave when looking at this
52 if (cmd.resp[1] & MMC_CARD_BUSY)
55 if (cmd.resp[0] & MMC_CARD_BUSY)
65 *rocr = cmd.resp[mmc_host_is_spi(host) ? 1 : 0];
70 int mmc_io_rw_direct(struct mmc_card *card, int write, unsigned fn,
71 unsigned addr, u8 in, u8* out)
73 struct mmc_command cmd;
83 memset(&cmd, 0, sizeof(struct mmc_command));
85 cmd.opcode = SD_IO_RW_DIRECT;
86 cmd.arg = write ? 0x80000000 : 0x00000000;
88 cmd.arg |= (write && out) ? 0x08000000 : 0x00000000;
91 cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_AC;
93 err = mmc_wait_for_cmd(card->host, &cmd, 0);
97 if (mmc_host_is_spi(card->host)) {
98 /* host driver already reported errors */
100 if (cmd.resp[0] & R5_ERROR)
102 if (cmd.resp[0] & R5_FUNCTION_NUMBER)
104 if (cmd.resp[0] & R5_OUT_OF_RANGE)
109 if (mmc_host_is_spi(card->host))
110 *out = (cmd.resp[0] >> 8) & 0xFF;
112 *out = cmd.resp[0] & 0xFF;
118 int mmc_io_rw_extended(struct mmc_card *card, int write, unsigned fn,
119 unsigned addr, int incr_addr, u8 *buf, unsigned blocks, unsigned blksz)
121 struct mmc_request mrq;
122 struct mmc_command cmd;
123 struct mmc_data data;
124 struct scatterlist sg;
128 BUG_ON(blocks == 1 && blksz > 512);
129 WARN_ON(blocks == 0);
136 memset(&mrq, 0, sizeof(struct mmc_request));
137 memset(&cmd, 0, sizeof(struct mmc_command));
138 memset(&data, 0, sizeof(struct mmc_data));
143 cmd.opcode = SD_IO_RW_EXTENDED;
144 cmd.arg = write ? 0x80000000 : 0x00000000;
146 cmd.arg |= incr_addr ? 0x04000000 : 0x00000000;
147 cmd.arg |= addr << 9;
148 if (blocks == 1 && blksz <= 512)
149 cmd.arg |= (blksz == 512) ? 0 : blksz; /* byte mode */
151 cmd.arg |= 0x08000000 | blocks; /* block mode */
152 cmd.flags = MMC_RSP_SPI_R5 | MMC_RSP_R5 | MMC_CMD_ADTC;
155 data.blocks = blocks;
156 data.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
160 sg_init_one(&sg, buf, blksz * blocks);
162 mmc_set_data_timeout(&data, card);
164 mmc_wait_for_req(card->host, &mrq);
171 if (mmc_host_is_spi(card->host)) {
172 /* host driver already reported errors */
174 if (cmd.resp[0] & R5_ERROR)
176 if (cmd.resp[0] & R5_FUNCTION_NUMBER)
178 if (cmd.resp[0] & R5_OUT_OF_RANGE)