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