1 /*
2 * ftl.h 1.8 2000/06/12 21:55:40
3 *
4 * The contents of this file are subject to the Mozilla Public License
5 * Version 1.1 (the "License"); you may not use this file except in
6 * compliance with the License. You may obtain a copy of the License
7 * at http://www.mozilla.org/MPL/
8 *
9 * Software distributed under the License is distributed on an "AS IS"
10 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
11 * the License for the specific language governing rights and
12 * limitations under the License.
13 *
14 * The initial developer of the original code is David A. Hinds
15 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
16 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
17 *
18 * Alternatively, the contents of this file may be used under the
19 * terms of the GNU Public License version 2 (the "GPL"), in which
20 * case the provisions of the GPL are applicable instead of the
21 * above. If you wish to allow the use of your version of this file
22 * only under the terms of the GPL and not to allow others to use
23 * your version of this file under the MPL, indicate your decision by
24 * deleting the provisions above and replace them with the notice and
25 * other provisions required by the GPL. If you do not delete the
26 * provisions above, a recipient may use your version of this file
27 * under either the MPL or the GPL.
28 */
29
30 #ifndef _LINUX_FTL_H
31 #define _LINUX_FTL_H
32
33 typedef struct erase_unit_header_t {
34 u_char LinkTargetTuple[5];
35 u_char DataOrgTuple[10];
36 u_char NumTransferUnits;
37 u_int EraseCount;
38 u_short LogicalEUN;
39 u_char BlockSize;
40 u_char EraseUnitSize;
41 u_short FirstPhysicalEUN;
42 u_short NumEraseUnits;
43 u_int FormattedSize;
44 u_int FirstVMAddress;
45 u_short NumVMPages;
46 u_char Flags;
47 u_char Code;
48 u_int SerialNumber;
49 u_int AltEUHOffset;
50 u_int BAMOffset;
51 u_char Reserved[12];
52 u_char EndTuple[2];
53 } erase_unit_header_t;
54
55 /* Flags in erase_unit_header_t */
56 #define HIDDEN_AREA 0x01
57 #define REVERSE_POLARITY 0x02
58 #define DOUBLE_BAI 0x04
59
60 /* Definitions for block allocation information */
61
62 #define BLOCK_FREE(b) ((b) == 0xffffffff)
63 #define BLOCK_DELETED(b) (((b) == 0) || ((b) == 0xfffffffe))
64
65 #define BLOCK_TYPE(b) ((b) & 0x7f)
66 #define BLOCK_ADDRESS(b) ((b) & ~0x7f)
67 #define BLOCK_NUMBER(b) ((b) >> 9)
68 #define BLOCK_CONTROL 0x30
69 #define BLOCK_DATA 0x40
70 #define BLOCK_REPLACEMENT 0x60
71 #define BLOCK_BAD 0x70
72
73 #endif /* _LINUX_FTL_H */
74
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