[thirdparty/u-boot.git] / fs / btrfs / dev.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * BTRFS filesystem implementation for U-Boot
 *
 * 2017 Marek Behún, CZ.NIC, kabel@kernel.org
 */

#include <common.h>
#include <blk.h>
#include <compiler.h>
#include <fs_internal.h>

struct blk_desc *btrfs_blk_desc;
struct disk_partition *btrfs_part_info;

int btrfs_devread(u64 address, int byte_len, void *buf)
{
	lbaint_t sector;
	int byte_offset;

	sector = address >> btrfs_blk_desc->log2blksz;
	byte_offset = address % btrfs_blk_desc->blksz;

	return fs_devread(btrfs_blk_desc, btrfs_part_info, sector, byte_offset,
			  byte_len, buf);
}
Commit	Line	Data
83d290c5	1	// SPDX-License-Identifier: GPL-2.0+
21a14fac MB	2	/*
	3	* BTRFS filesystem implementation for U-Boot
	4	*
61143f74	5	* 2017 Marek Behún, CZ.NIC, kabel@kernel.org
21a14fac MB	6	*/
21a14fac MB	7
d678a59d	8	#include <common.h>
e6f6f9e6	9	#include <blk.h>
21a14fac MB	10	#include <compiler.h>
	11	#include <fs_internal.h>
	12
	13	struct blk_desc *btrfs_blk_desc;
0528979f	14	struct disk_partition *btrfs_part_info;
21a14fac MB	15
	16	int btrfs_devread(u64 address, int byte_len, void *buf)
	17	{
	18	lbaint_t sector;
	19	int byte_offset;
	20
	21	sector = address >> btrfs_blk_desc->log2blksz;
	22	byte_offset = address % btrfs_blk_desc->blksz;
	23
	24	return fs_devread(btrfs_blk_desc, btrfs_part_info, sector, byte_offset,
	25	byte_len, buf);
	26	}