1 /*
2 * Derived from (and probably identical to):
3 * ftl.h 1.7 1999/10/25 20:23:17
4 *
5 * The contents of this file are subject to the Mozilla Public License
6 * Version 1.1 (the "License"); you may not use this file except in
7 * compliance with the License. You may obtain a copy of the License
8 * at http://www.mozilla.org/MPL/
9 *
10 * Software distributed under the License is distributed on an "AS IS"
11 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
12 * the License for the specific language governing rights and
13 * limitations under the License.
14 *
15 * The initial developer of the original code is David A. Hinds
16 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
17 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
18 *
19 * Alternatively, the contents of this file may be used under the
20 * terms of the GNU General Public License version 2 (the "GPL"), in
21 * which case the provisions of the GPL are applicable instead of the
22 * above. If you wish to allow the use of your version of this file
23 * only under the terms of the GPL and not to allow others to use
24 * your version of this file under the MPL, indicate your decision by
25 * deleting the provisions above and replace them with the notice and
26 * other provisions required by the GPL. If you do not delete the
27 * provisions above, a recipient may use your version of this file
28 * under either the MPL or the GPL.
29 */
30
31 #ifndef _LINUX_FTL_H
32 #define _LINUX_FTL_H
33
34 typedef struct erase_unit_header_t {
35 uint8_t LinkTargetTuple[5];
36 uint8_t DataOrgTuple[10];
37 uint8_t NumTransferUnits;
38 uint32_t EraseCount;
39 uint16_t LogicalEUN;
40 uint8_t BlockSize;
41 uint8_t EraseUnitSize;
42 uint16_t FirstPhysicalEUN;
43 uint16_t NumEraseUnits;
44 uint32_t FormattedSize;
45 uint32_t FirstVMAddress;
46 uint16_t NumVMPages;
47 uint8_t Flags;
48 uint8_t Code;
49 uint32_t SerialNumber;
50 uint32_t AltEUHOffset;
51 uint32_t BAMOffset;
52 uint8_t Reserved[12];
53 uint8_t EndTuple[2];
54 } erase_unit_header_t;
55
56 /* Flags in erase_unit_header_t */
57 #define HIDDEN_AREA 0x01
58 #define REVERSE_POLARITY 0x02
59 #define DOUBLE_BAI 0x04
60
61 /* Definitions for block allocation information */
62
63 #define BLOCK_FREE(b) ((b) == 0xffffffff)
64 #define BLOCK_DELETED(b) (((b) == 0) || ((b) == 0xfffffffe))
65
66 #define BLOCK_TYPE(b) ((b) & 0x7f)
67 #define BLOCK_ADDRESS(b) ((b) & ~0x7f)
68 #define BLOCK_NUMBER(b) ((b) >> 9)
69 #define BLOCK_CONTROL 0x30
70 #define BLOCK_DATA 0x40
71 #define BLOCK_REPLACEMENT 0x60
72 #define BLOCK_BAD 0x70
73
74 #endif /* _LINUX_FTL_H */