u-boot/include/blk.h

/*
 * (C) Copyright 2000-2004
 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#ifndef BLK_H
#define BLK_H

#ifdef CONFIG_SYS_64BIT_LBA
typedef uint64_t lbaint_t;
#define LBAFlength "ll"
#else
typedef ulong lbaint_t;
#define LBAFlength "l"
#endif
#define LBAF "%" LBAFlength "x"
#define LBAFU "%" LBAFlength "u"

/* Interface types: */
enum if_type {
	IF_TYPE_UNKNOWN = 0,
	IF_TYPE_IDE,
	IF_TYPE_SCSI,
	IF_TYPE_ATAPI,
	IF_TYPE_USB,
	IF_TYPE_DOC,
	IF_TYPE_MMC,
	IF_TYPE_SD,
	IF_TYPE_SATA,
	IF_TYPE_HOST,

	IF_TYPE_COUNT,			/* Number of interface types */
};

struct blk_desc {
	enum if_type	if_type;	/* type of the interface */
	int		dev;		/* device number */
	unsigned char	part_type;	/* partition type */
	unsigned char	target;		/* target SCSI ID */
	unsigned char	lun;		/* target LUN */
	unsigned char	hwpart;		/* HW partition, e.g. for eMMC */
	unsigned char	type;		/* device type */
	unsigned char	removable;	/* removable device */
#ifdef CONFIG_LBA48
	/* device can use 48bit addr (ATA/ATAPI v7) */
	unsigned char	lba48;
#endif
	lbaint_t	lba;		/* number of blocks */
	unsigned long	blksz;		/* block size */
	int		log2blksz;	/* for convenience: log2(blksz) */
	char		vendor[40+1];	/* IDE model, SCSI Vendor */
	char		product[20+1];	/* IDE Serial no, SCSI product */
	char		revision[8+1];	/* firmware revision */
	unsigned long	(*block_read)(struct blk_desc *block_dev,
				      lbaint_t start,
				      lbaint_t blkcnt,
				      void *buffer);
	unsigned long	(*block_write)(struct blk_desc *block_dev,
				       lbaint_t start,
				       lbaint_t blkcnt,
				       const void *buffer);
	unsigned long	(*block_erase)(struct blk_desc *block_dev,
				       lbaint_t start,
				       lbaint_t blkcnt);
	void		*priv;		/* driver private struct pointer */
};

#define BLOCK_CNT(size, blk_desc) (PAD_COUNT(size, blk_desc->blksz))
#define PAD_TO_BLOCKSIZE(size, blk_desc) \
	(PAD_SIZE(size, blk_desc->blksz))

#endif