mmc: Move core functions to subdir

Create a "core" subdirectory to house the central bus handling
functions.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

1 files changed, 112 insertions, 0 deletions

diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
new file mode 100644
index 00000000000..d8fd66cf28b
--- /dev/null
+++ b/include/linux/mmc/core.h
@@ -0,0 +1,112 @@
+/*
+ *  linux/include/linux/mmc/core.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 LINUX_MMC_CORE_H
+#define LINUX_MMC_CORE_H
+
+#include <linux/interrupt.h>
+#include <linux/device.h>
+
+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_PRESENT (1 << 0)
+#define MMC_RSP_136     (1 << 1)                /* 136 bit response */
+#define MMC_RSP_CRC     (1 << 2)                /* expect valid crc */
+#define MMC_RSP_BUSY    (1 << 3)                /* card may send busy */
+#define MMC_RSP_OPCODE  (1 << 4)                /* response contains opcode */
+#define MMC_CMD_MASK    (3 << 5)                /* command type */
+#define MMC_CMD_AC      (0 << 5)
+#define MMC_CMD_ADTC    (1 << 5)
+#define MMC_CMD_BC      (2 << 5)
+#define MMC_CMD_BCR     (3 << 5)
+
+/*
+ * 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_NONE    (0)
+#define MMC_RSP_R1      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
+#define MMC_RSP_R1B     (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE|MMC_RSP_BUSY)
+#define MMC_RSP_R2      (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)
+#define MMC_RSP_R3      (MMC_RSP_PRESENT)
+#define MMC_RSP_R6      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
+#define MMC_RSP_R7      (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
+
+#define mmc_resp_type(cmd)      ((cmd)->flags & (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC|MMC_RSP_BUSY|MMC_RSP_OPCODE))
+
+/*
+ * These are the command types.
+ */
+#define mmc_cmd_type(cmd)       ((cmd)->flags & MMC_CMD_MASK)
+
+        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;           /* associated 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;          /* 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)
+#define MMC_DATA_MULTI  (1 << 11)
+
+        unsigned int            bytes_xfered;
+
+        struct mmc_command      *stop;          /* stop command */
+        struct mmc_request      *mrq;           /* associated 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_wait_for_app_cmd(struct mmc_host *, unsigned int,
+        struct mmc_command *, int);
+
+extern void mmc_set_data_timeout(struct mmc_data *, const struct mmc_card *, int);
+
+extern void mmc_claim_host(struct mmc_host *host);
+extern void mmc_release_host(struct mmc_host *host);
+
+#endif