From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- include/linux/mmc/mmc.h | 101 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 101 insertions(+) create mode 100644 include/linux/mmc/mmc.h (limited to 'include/linux/mmc/mmc.h') diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h new file mode 100644 index 000000000000..0d35d4ffb360 --- /dev/null +++ b/include/linux/mmc/mmc.h @@ -0,0 +1,101 @@ +/* + * linux/include/linux/mmc/mmc.h + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef MMC_H +#define MMC_H + +#include +#include +#include + +struct request; +struct mmc_data; +struct mmc_request; + +struct mmc_command { + u32 opcode; + u32 arg; + u32 resp[4]; + unsigned int flags; /* expected response type */ +#define MMC_RSP_NONE (0 << 0) +#define MMC_RSP_SHORT (1 << 0) +#define MMC_RSP_LONG (2 << 0) +#define MMC_RSP_MASK (3 << 0) +#define MMC_RSP_CRC (1 << 3) /* expect valid crc */ +#define MMC_RSP_BUSY (1 << 4) /* card may send busy */ + +/* + * These are the response types, and correspond to valid bit + * patterns of the above flags. One additional valid pattern + * is all zeros, which means we don't expect a response. + */ +#define MMC_RSP_R1 (MMC_RSP_SHORT|MMC_RSP_CRC) +#define MMC_RSP_R1B (MMC_RSP_SHORT|MMC_RSP_CRC|MMC_RSP_BUSY) +#define MMC_RSP_R2 (MMC_RSP_LONG|MMC_RSP_CRC) +#define MMC_RSP_R3 (MMC_RSP_SHORT) +#define MMC_RSP_R6 (MMC_RSP_SHORT|MMC_RSP_CRC) + + unsigned int retries; /* max number of retries */ + unsigned int error; /* command error */ + +#define MMC_ERR_NONE 0 +#define MMC_ERR_TIMEOUT 1 +#define MMC_ERR_BADCRC 2 +#define MMC_ERR_FIFO 3 +#define MMC_ERR_FAILED 4 +#define MMC_ERR_INVALID 5 + + struct mmc_data *data; /* data segment associated with cmd */ + struct mmc_request *mrq; /* assoicated request */ +}; + +struct mmc_data { + unsigned int timeout_ns; /* data timeout (in ns, max 80ms) */ + unsigned int timeout_clks; /* data timeout (in clocks) */ + unsigned int blksz_bits; /* data block size */ + unsigned int blocks; /* number of blocks */ + unsigned int error; /* data error */ + unsigned int flags; + +#define MMC_DATA_WRITE (1 << 8) +#define MMC_DATA_READ (1 << 9) +#define MMC_DATA_STREAM (1 << 10) + + unsigned int bytes_xfered; + + struct mmc_command *stop; /* stop command */ + struct mmc_request *mrq; /* assoicated request */ + + unsigned int sg_len; /* size of scatter list */ + struct scatterlist *sg; /* I/O scatter list */ +}; + +struct mmc_request { + struct mmc_command *cmd; + struct mmc_data *data; + struct mmc_command *stop; + + void *done_data; /* completion data */ + void (*done)(struct mmc_request *);/* completion function */ +}; + +struct mmc_host; +struct mmc_card; + +extern int mmc_wait_for_req(struct mmc_host *, struct mmc_request *); +extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int); + +extern int __mmc_claim_host(struct mmc_host *host, struct mmc_card *card); + +static inline void mmc_claim_host(struct mmc_host *host) +{ + __mmc_claim_host(host, (struct mmc_card *)-1); +} + +extern void mmc_release_host(struct mmc_host *host); + +#endif -- cgit v1.2.2