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 General 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