/*
   * BTRFS filesystem implementation for U-Boot
   *
   * 2017 Marek Behun, CZ.NIC, marek.behun@nic.cz
   *
   * SPDX-License-Identifier:	GPL-2.0+
   */
  
  #include <common.h>
  #include <compiler.h>
  #include <fs_internal.h>
  
  struct blk_desc *btrfs_blk_desc;
  disk_partition_t *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);
  }