blockdev.h

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#ifndef DEV_BLOCKDEV_H_
#define DEV_BLOCKDEV_H_

/*
 * Copyright (C) 2005 by egnite Software GmbH. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
 * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * For additional information see http://www.ethernut.de/
 */

#include <sys/types.h>
#include <stdint.h>
#include <sys/device.h>
#include <sys/file.h>



#define NUTBLKDEV_MEDIAAVAIL   0x1200

#define NUTBLKDEV_MEDIACHANGE  0x1201

#define NUTBLKDEV_INFO         0x1202

#define NUTBLKDEV_SEEK         0x1203

typedef struct _BLKPAR_SEEK {
    NUTFILE *par_nfp;
    uint32_t par_blknum;
} BLKPAR_SEEK;

typedef struct _BLKPAR_INFO {
    NUTFILE *par_nfp;
    uint32_t par_nblks;
    uint32_t par_blksz;
    uint8_t *par_blkbp;
} BLKPAR_INFO;

typedef struct _NUTBLOCKIO NUTBLOCKIO;

struct _NUTBLOCKIO {
    void *blkio_info;

    uint32_t blkio_blk_cnt;

    uint32_t blkio_blk_siz;

    uint32_t blkio_vol_bot;

    uint32_t blkio_vol_top;
    
    int (*blkio_read) (NUTDEVICE *, uint32_t, void *, int);

    int (*blkio_write) (NUTDEVICE *, uint32_t, CONST void *, int);

#ifdef __HARVARD_ARCH__

    int (*blkio_write_P) (NUTDEVICE *, uint32_t, PGM_P, int);
#endif

    int (*blkio_ioctl)(NUTDEVICE *, int, void *);
};

__BEGIN_DECLS
/* Prototypes */
extern int NutBlockDeviceInit(NUTDEVICE * dev);
extern NUTFILE *NutBlockDeviceOpen(NUTDEVICE * dev, CONST char *name, int mode, int acc);
extern int NutBlockDeviceClose(NUTFILE * nfp);
extern int NutBlockDeviceIOCtl(NUTDEVICE * dev, int req, void *conf);
extern int NutBlockDeviceRead(NUTFILE * nfp, void *buffer, int num);
extern int NutBlockDeviceWrite(NUTFILE *nfp, CONST void *buffer, int num);
extern long NutBlockDeviceSize(NUTFILE *nfp);
#ifdef __HARVARD_ARCH__
extern int NutBlockDeviceWrite_P(NUTFILE * nfp, PGM_P buffer, int num);
#endif
/* Prototypes */
__END_DECLS

#endif