mtk-preloader/platform/common/inc/blkdev.h

/* Copyright Statement:
 *
 * This software/firmware and related documentation ("MediaTek Software") are
 * protected under relevant copyright laws. The information contained herein is
 * confidential and proprietary to MediaTek Inc. and/or its licensors. Without
 * the prior written permission of MediaTek inc. and/or its licensors, any
 * reproduction, modification, use or disclosure of MediaTek Software, and
 * information contained herein, in whole or in part, shall be strictly
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 * MediaTek Inc. (C) 2010. All rights reserved.
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 * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
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 * The following software/firmware and/or related documentation ("MediaTek
 * Software") have been modified by MediaTek Inc. All revisions are subject to
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 */

#ifndef BLKDEV_H
#define BLKDEV_H

#include "typedefs.h"

typedef struct blkdev blkdev_t;

struct blkdev {
    u32 type;       /* block device type */
    u32 blksz;      /* block size. (read/write unit) */
    u32 erasesz;    /* erase size */
    u32 blks;       /* number of blocks in the device */
    u32 offset;     /* user area offset in blksz unit */
    u8 *blkbuf;     /* block size buffer */
    void *priv;     /* device private data */
    blkdev_t *next; /* next block device */
    int (*bread)(blkdev_t *bdev, u32 blknr, u32 blks, u8 *buf, u32 part_id);
    int (*bwrite)(blkdev_t *bdev, u32 blknr, u32 blks, u8 *buf, u32 part_id);
    u64 (*get_part_size)(blkdev_t *bdev, u32 part_id);
};

extern int blkdev_register(blkdev_t *bdev);
extern int blkdev_read(blkdev_t *bdev, u64 src, u32 size, u8 *dst, u32 part_id);
extern int blkdev_write(blkdev_t *bdev, u64 dst, u32 size, u8 *src, u32 part_id);
extern int blkdev_bread(blkdev_t *bdev, u32 blknr, u32 blks, u8 *buf, u32 part_id);
extern int blkdev_bwrite(blkdev_t *bdev, u32 blknr, u32 blks, u8 *buf, u32 part_id);
extern int blkdev_boot_read(blkdev_t *bdev, u64 src, u32 size, u8 *dst);
extern blkdev_t *blkdev_get(u32 type);

#endif /* BLKDEV_H */