104 lines
2.9 KiB
C
104 lines
2.9 KiB
C
/*
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* (C) Copyright 2000-2004
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef BLK_H
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#define BLK_H
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#ifdef CONFIG_SYS_64BIT_LBA
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typedef uint64_t lbaint_t;
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#define LBAFlength "ll"
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#else
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typedef ulong lbaint_t;
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#define LBAFlength "l"
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#endif
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#define LBAF "%" LBAFlength "x"
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#define LBAFU "%" LBAFlength "u"
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/* Interface types: */
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enum if_type {
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IF_TYPE_UNKNOWN = 0,
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IF_TYPE_IDE,
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IF_TYPE_SCSI,
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IF_TYPE_ATAPI,
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IF_TYPE_USB,
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IF_TYPE_DOC,
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IF_TYPE_MMC,
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IF_TYPE_SD,
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IF_TYPE_SATA,
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IF_TYPE_HOST,
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IF_TYPE_COUNT, /* Number of interface types */
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};
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struct blk_desc {
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enum if_type if_type; /* type of the interface */
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int devnum; /* device number */
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unsigned char part_type; /* partition type */
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unsigned char target; /* target SCSI ID */
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unsigned char lun; /* target LUN */
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unsigned char hwpart; /* HW partition, e.g. for eMMC */
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unsigned char type; /* device type */
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unsigned char removable; /* removable device */
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#ifdef CONFIG_LBA48
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/* device can use 48bit addr (ATA/ATAPI v7) */
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unsigned char lba48;
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#endif
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lbaint_t lba; /* number of blocks */
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unsigned long blksz; /* block size */
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int log2blksz; /* for convenience: log2(blksz) */
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char vendor[40+1]; /* IDE model, SCSI Vendor */
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char product[20+1]; /* IDE Serial no, SCSI product */
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char revision[8+1]; /* firmware revision */
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unsigned long (*block_read)(struct blk_desc *block_dev,
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lbaint_t start,
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lbaint_t blkcnt,
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void *buffer);
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unsigned long (*block_write)(struct blk_desc *block_dev,
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lbaint_t start,
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lbaint_t blkcnt,
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const void *buffer);
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unsigned long (*block_erase)(struct blk_desc *block_dev,
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lbaint_t start,
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lbaint_t blkcnt);
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void *priv; /* driver private struct pointer */
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};
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#define BLOCK_CNT(size, blk_desc) (PAD_COUNT(size, blk_desc->blksz))
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#define PAD_TO_BLOCKSIZE(size, blk_desc) \
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(PAD_SIZE(size, blk_desc->blksz))
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/*
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* These functions should take struct udevice instead of struct blk_desc,
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* but this is convenient for migration to driver model. Add a 'd' prefix
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* to the function operations, so that blk_read(), etc. can be reserved for
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* functions with the correct arguments.
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*/
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static inline ulong blk_dread(struct blk_desc *block_dev, lbaint_t start,
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lbaint_t blkcnt, void *buffer)
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{
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/*
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* We could check if block_read is NULL and return -ENOSYS. But this
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* bloats the code slightly (cause some board to fail to build), and
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* it would be an error to try an operation that does not exist.
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*/
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return block_dev->block_read(block_dev, start, blkcnt, buffer);
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}
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static inline ulong blk_dwrite(struct blk_desc *block_dev, lbaint_t start,
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lbaint_t blkcnt, const void *buffer)
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{
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return block_dev->block_write(block_dev, start, blkcnt, buffer);
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}
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static inline ulong blk_derase(struct blk_desc *block_dev, lbaint_t start,
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lbaint_t blkcnt)
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{
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return block_dev->block_erase(block_dev, start, blkcnt);
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}
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#endif
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