| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * $Id: ftl.h,v 1.6 2003/01/24 13:20:04 dwmw2 Exp $ |
| 3 | * |
| 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 |
| 15 | * limitations under the License. |
| 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 */ |