/*
   * Derived from (and probably identical to):
   * ftl.h 1.7 1999/10/25 20:23:17
   *
   * The contents of this file are subject to the Mozilla Public License
   * Version 1.1 (the "License"); you may not use this file except in
   * compliance with the License. You may obtain a copy of the License
   * at http://www.mozilla.org/MPL/
   *
   * Software distributed under the License is distributed on an "AS IS"
   * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
   * the License for the specific language governing rights and
   * limitations under the License.
   *
   * The initial developer of the original code is David A. Hinds
   * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
   * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
   *
   * Alternatively, the contents of this file may be used under the
   * terms of the GNU General Public License version 2 (the "GPL"), in
   * which case the provisions of the GPL are applicable instead of the
   * above.  If you wish to allow the use of your version of this file
   * only under the terms of the GPL and not to allow others to use
   * your version of this file under the MPL, indicate your decision by
   * deleting the provisions above and replace them with the notice and
   * other provisions required by the GPL.  If you do not delete the
   * provisions above, a recipient may use your version of this file
   * under either the MPL or the GPL.
   */
  
  #ifndef _LINUX_FTL_H
  #define _LINUX_FTL_H
  
  typedef struct erase_unit_header_t {
      uint8_t	LinkTargetTuple[5];
      uint8_t	DataOrgTuple[10];
      uint8_t	NumTransferUnits;
      uint32_t	EraseCount;
      uint16_t	LogicalEUN;
      uint8_t	BlockSize;
      uint8_t	EraseUnitSize;
      uint16_t	FirstPhysicalEUN;
      uint16_t	NumEraseUnits;
      uint32_t	FormattedSize;
      uint32_t	FirstVMAddress;
      uint16_t	NumVMPages;
      uint8_t	Flags;
      uint8_t	Code;
      uint32_t	SerialNumber;
      uint32_t	AltEUHOffset;
      uint32_t	BAMOffset;
      uint8_t	Reserved[12];
      uint8_t	EndTuple[2];
  } erase_unit_header_t;
  
  /* Flags in erase_unit_header_t */
  #define HIDDEN_AREA		0x01
  #define REVERSE_POLARITY	0x02
  #define DOUBLE_BAI		0x04
  
  /* Definitions for block allocation information */
  
  #define BLOCK_FREE(b)		((b) == 0xffffffff)
  #define BLOCK_DELETED(b)	(((b) == 0) || ((b) == 0xfffffffe))
  
  #define BLOCK_TYPE(b)		((b) & 0x7f)
  #define BLOCK_ADDRESS(b)	((b) & ~0x7f)
  #define BLOCK_NUMBER(b)		((b) >> 9)
  #define BLOCK_CONTROL		0x30
  #define BLOCK_DATA		0x40
  #define BLOCK_REPLACEMENT	0x60
  #define BLOCK_BAD		0x70
  
  #endif /* _LINUX_FTL_H */