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1da177e4 | 1 | /* |
61ecfa87 TG |
2 | * $Id: ftl.h,v 1.7 2005/11/07 11:14:54 gleixner Exp $ |
3 | * | |
1da177e4 LT |
4 | * Derived from (and probably identical to): |
5 | * ftl.h 1.7 1999/10/25 20:23:17 | |
6 | * | |
7 | * The contents of this file are subject to the Mozilla Public License | |
8 | * Version 1.1 (the "License"); you may not use this file except in | |
9 | * compliance with the License. You may obtain a copy of the License | |
10 | * at http://www.mozilla.org/MPL/ | |
11 | * | |
12 | * Software distributed under the License is distributed on an "AS IS" | |
13 | * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See | |
14 | * the License for the specific language governing rights and | |
61ecfa87 | 15 | * limitations under the License. |
1da177e4 LT |
16 | * |
17 | * The initial developer of the original code is David A. Hinds | |
18 | * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds | |
19 | * are Copyright (C) 1999 David A. Hinds. All Rights Reserved. | |
20 | * | |
21 | * Alternatively, the contents of this file may be used under the | |
22 | * terms of the GNU General Public License version 2 (the "GPL"), in | |
23 | * which case the provisions of the GPL are applicable instead of the | |
24 | * above. If you wish to allow the use of your version of this file | |
25 | * only under the terms of the GPL and not to allow others to use | |
26 | * your version of this file under the MPL, indicate your decision by | |
27 | * deleting the provisions above and replace them with the notice and | |
28 | * other provisions required by the GPL. If you do not delete the | |
29 | * provisions above, a recipient may use your version of this file | |
30 | * under either the MPL or the GPL. | |
31 | */ | |
32 | ||
33 | #ifndef _LINUX_FTL_H | |
34 | #define _LINUX_FTL_H | |
35 | ||
36 | typedef struct erase_unit_header_t { | |
37 | u_int8_t LinkTargetTuple[5]; | |
38 | u_int8_t DataOrgTuple[10]; | |
39 | u_int8_t NumTransferUnits; | |
40 | u_int32_t EraseCount; | |
41 | u_int16_t LogicalEUN; | |
42 | u_int8_t BlockSize; | |
43 | u_int8_t EraseUnitSize; | |
44 | u_int16_t FirstPhysicalEUN; | |
45 | u_int16_t NumEraseUnits; | |
46 | u_int32_t FormattedSize; | |
47 | u_int32_t FirstVMAddress; | |
48 | u_int16_t NumVMPages; | |
49 | u_int8_t Flags; | |
50 | u_int8_t Code; | |
51 | u_int32_t SerialNumber; | |
52 | u_int32_t AltEUHOffset; | |
53 | u_int32_t BAMOffset; | |
54 | u_int8_t Reserved[12]; | |
55 | u_int8_t EndTuple[2]; | |
56 | } erase_unit_header_t; | |
57 | ||
58 | /* Flags in erase_unit_header_t */ | |
59 | #define HIDDEN_AREA 0x01 | |
60 | #define REVERSE_POLARITY 0x02 | |
61 | #define DOUBLE_BAI 0x04 | |
62 | ||
63 | /* Definitions for block allocation information */ | |
64 | ||
65 | #define BLOCK_FREE(b) ((b) == 0xffffffff) | |
66 | #define BLOCK_DELETED(b) (((b) == 0) || ((b) == 0xfffffffe)) | |
67 | ||
68 | #define BLOCK_TYPE(b) ((b) & 0x7f) | |
69 | #define BLOCK_ADDRESS(b) ((b) & ~0x7f) | |
70 | #define BLOCK_NUMBER(b) ((b) >> 9) | |
71 | #define BLOCK_CONTROL 0x30 | |
72 | #define BLOCK_DATA 0x40 | |
73 | #define BLOCK_REPLACEMENT 0x60 | |
74 | #define BLOCK_BAD 0x70 | |
75 | ||
76 | #endif /* _LINUX_FTL_H */ |