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/include/linux/mtd/ftl.h

https://bitbucket.org/cyanogenmod/android_kernel_asus_tf300t
C Header | 74 lines | 36 code | 7 blank | 31 comment | 4 complexity | 12b3bfae3f1aec263a73cab21f6d28dd MD5 | raw file
Possible License(s): LGPL-2.0, AGPL-1.0, GPL-2.0
 1/*
 2 * Derived from (and probably identical to):
 3 * ftl.h 1.7 1999/10/25 20:23:17
 4 *
 5 * The contents of this file are subject to the Mozilla Public License
 6 * Version 1.1 (the "License"); you may not use this file except in
 7 * compliance with the License. You may obtain a copy of the License
 8 * at http://www.mozilla.org/MPL/
 9 *
10 * Software distributed under the License is distributed on an "AS IS"
11 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
12 * the License for the specific language governing rights and
13 * limitations under the License.
14 *
15 * The initial developer of the original code is David A. Hinds
16 * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
17 * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
18 *
19 * Alternatively, the contents of this file may be used under the
20 * terms of the GNU General Public License version 2 (the "GPL"), in
21 * which case the provisions of the GPL are applicable instead of the
22 * above.  If you wish to allow the use of your version of this file
23 * only under the terms of the GPL and not to allow others to use
24 * your version of this file under the MPL, indicate your decision by
25 * deleting the provisions above and replace them with the notice and
26 * other provisions required by the GPL.  If you do not delete the
27 * provisions above, a recipient may use your version of this file
28 * under either the MPL or the GPL.
29 */
30
31#ifndef _LINUX_FTL_H
32#define _LINUX_FTL_H
33
34typedef struct erase_unit_header_t {
35    uint8_t	LinkTargetTuple[5];
36    uint8_t	DataOrgTuple[10];
37    uint8_t	NumTransferUnits;
38    uint32_t	EraseCount;
39    uint16_t	LogicalEUN;
40    uint8_t	BlockSize;
41    uint8_t	EraseUnitSize;
42    uint16_t	FirstPhysicalEUN;
43    uint16_t	NumEraseUnits;
44    uint32_t	FormattedSize;
45    uint32_t	FirstVMAddress;
46    uint16_t	NumVMPages;
47    uint8_t	Flags;
48    uint8_t	Code;
49    uint32_t	SerialNumber;
50    uint32_t	AltEUHOffset;
51    uint32_t	BAMOffset;
52    uint8_t	Reserved[12];
53    uint8_t	EndTuple[2];
54} erase_unit_header_t;
55
56/* Flags in erase_unit_header_t */
57#define HIDDEN_AREA		0x01
58#define REVERSE_POLARITY	0x02
59#define DOUBLE_BAI		0x04
60
61/* Definitions for block allocation information */
62
63#define BLOCK_FREE(b)		((b) == 0xffffffff)
64#define BLOCK_DELETED(b)	(((b) == 0) || ((b) == 0xfffffffe))
65
66#define BLOCK_TYPE(b)		((b) & 0x7f)
67#define BLOCK_ADDRESS(b)	((b) & ~0x7f)
68#define BLOCK_NUMBER(b)		((b) >> 9)
69#define BLOCK_CONTROL		0x30
70#define BLOCK_DATA		0x40
71#define BLOCK_REPLACEMENT	0x60
72#define BLOCK_BAD		0x70
73
74#endif /* _LINUX_FTL_H */