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/*

 * $Id: ftl.h,v 1.7 2005/11/07 11:14:54 gleixner Exp $

 *

 * 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 {

    u_int8_t    LinkTargetTuple[5];

    u_int8_t    DataOrgTuple[10];

    u_int8_t    NumTransferUnits;

    u_int32_t   EraseCount;

    u_int16_t   LogicalEUN;

    u_int8_t    BlockSize;

    u_int8_t    EraseUnitSize;

    u_int16_t   FirstPhysicalEUN;

    u_int16_t   NumEraseUnits;

    u_int32_t   FormattedSize;

    u_int32_t   FirstVMAddress;

    u_int16_t   NumVMPages;

    u_int8_t    Flags;

    u_int8_t    Code;

    u_int32_t   SerialNumber;

    u_int32_t   AltEUHOffset;

    u_int32_t   BAMOffset;

    u_int8_t    Reserved[12];

    u_int8_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 */