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-rw-r--r--include/linux/mmc/mmc.h101
1 files changed, 101 insertions, 0 deletions
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
new file mode 100644
index 0000000..0d35d4f
--- /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 <linux/list.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_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
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