root/include/linux/mmc/sdio_func.h

/*
 *  include/linux/mmc/sdio_func.h
 *
 *  Copyright 2007-2008 Pierre Ossman
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 */

#ifndef MMC_SDIO_FUNC_H
#define MMC_SDIO_FUNC_H

#include <linux/device.h>
#include <linux/mod_devicetable.h>

struct mmc_card;
struct sdio_func;

typedef void (sdio_irq_handler_t)(struct sdio_func *);

/*
 * SDIO function CIS tuple (unknown to the core)
 */
struct sdio_func_tuple {
        struct sdio_func_tuple *next;
        unsigned char code;
        unsigned char size;
        unsigned char data[0];
};

/*
 * SDIO function devices
 */
struct sdio_func {
        struct mmc_card         *card;          /* the card this device belongs to */
        struct device           dev;            /* the device */
        sdio_irq_handler_t      *irq_handler;   /* IRQ callback */
        unsigned int            num;            /* function number */

        unsigned char           class;          /* standard interface class */
        unsigned short          vendor;         /* vendor id */
        unsigned short          device;         /* device id */

        unsigned                max_blksize;    /* maximum block size */
        unsigned                cur_blksize;    /* current block size */

        unsigned                enable_timeout; /* max enable timeout in msec */

        unsigned int            state;          /* function state */
#define SDIO_STATE_PRESENT      (1<<0)          /* present in sysfs */

        u8                      tmpbuf[4];      /* DMA:able scratch buffer */

        unsigned                num_info;       /* number of info strings */
        const char              **info;         /* info strings */

        struct sdio_func_tuple *tuples;
};

#define sdio_func_present(f)    ((f)->state & SDIO_STATE_PRESENT)

#define sdio_func_set_present(f) ((f)->state |= SDIO_STATE_PRESENT)

#define sdio_func_id(f)         ((f)->dev.bus_id)

#define sdio_get_drvdata(f)     dev_get_drvdata(&(f)->dev)
#define sdio_set_drvdata(f,d)   dev_set_drvdata(&(f)->dev, d)

/*
 * SDIO function device driver
 */
struct sdio_driver {
        char *name;
        const struct sdio_device_id *id_table;

        int (*probe)(struct sdio_func *, const struct sdio_device_id *);
        void (*remove)(struct sdio_func *);

        struct device_driver drv;
};

/**
 * SDIO_DEVICE - macro used to describe a specific SDIO device
 * @vend: the 16 bit manufacturer code
 * @dev: the 16 bit function id
 *
 * This macro is used to create a struct sdio_device_id that matches a
 * specific device. The class field will be set to SDIO_ANY_ID.
 */
#define SDIO_DEVICE(vend,dev) \
        .class = SDIO_ANY_ID, \
        .vendor = (vend), .device = (dev)

/**
 * SDIO_DEVICE_CLASS - macro used to describe a specific SDIO device class
 * @dev_class: the 8 bit standard interface code
 *
 * This macro is used to create a struct sdio_device_id that matches a
 * specific standard SDIO function type.  The vendor and device fields will
 * be set to SDIO_ANY_ID.
 */
#define SDIO_DEVICE_CLASS(dev_class) \
        .class = (dev_class), \
        .vendor = SDIO_ANY_ID, .device = SDIO_ANY_ID

extern int sdio_register_driver(struct sdio_driver *);
extern void sdio_unregister_driver(struct sdio_driver *);

/*
 * SDIO I/O operations
 */
extern void sdio_claim_host(struct sdio_func *func);
extern void sdio_release_host(struct sdio_func *func);

extern int sdio_enable_func(struct sdio_func *func);
extern int sdio_disable_func(struct sdio_func *func);

extern int sdio_set_block_size(struct sdio_func *func, unsigned blksz);

extern int sdio_claim_irq(struct sdio_func *func, sdio_irq_handler_t *handler);
extern int sdio_release_irq(struct sdio_func *func);

extern unsigned int sdio_align_size(struct sdio_func *func, unsigned int sz);

extern u8 sdio_readb(struct sdio_func *func, unsigned int addr, int *err_ret);
extern u16 sdio_readw(struct sdio_func *func, unsigned int addr, int *err_ret);
extern u32 sdio_readl(struct sdio_func *func, unsigned int addr, int *err_ret);

extern int sdio_memcpy_fromio(struct sdio_func *func, void *dst,
        unsigned int addr, int count);
extern int sdio_readsb(struct sdio_func *func, void *dst,
        unsigned int addr, int count);

extern void sdio_writeb(struct sdio_func *func, u8 b,
        unsigned int addr, int *err_ret);
extern void sdio_writew(struct sdio_func *func, u16 b,
        unsigned int addr, int *err_ret);
extern void sdio_writel(struct sdio_func *func, u32 b,
        unsigned int addr, int *err_ret);

extern int sdio_memcpy_toio(struct sdio_func *func, unsigned int addr,
        void *src, int count);
extern int sdio_writesb(struct sdio_func *func, unsigned int addr,
        void *src, int count);

extern unsigned char sdio_f0_readb(struct sdio_func *func,
        unsigned int addr, int *err_ret);
extern void sdio_f0_writeb(struct sdio_func *func, unsigned char b,
        unsigned int addr, int *err_ret);

#endif