target/linux/generic-2.6/files-2.6.25/fs/yaffs2/yportenv.h

   1 /*
   2  * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
   3  *
   4  * Copyright (C) 2002-2007 Aleph One Ltd.
   5  *   for Toby Churchill Ltd and Brightstar Engineering
   6  *
   7  * Created by Charles Manning <charles@aleph1.co.uk>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU Lesser General Public License version 2.1 as
  11  * published by the Free Software Foundation.
  12  *
  13  * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
  14  */
  15
  16
  17 #ifndef __YPORTENV_H__
  18 #define __YPORTENV_H__
  19
  20 /*
  21  * Define the MTD version in terms of Linux Kernel versions
  22  * This allows yaffs to be used independantly of the kernel
  23  * as well as with it.
  24  */
  25
  26 #define MTD_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
  27
  28 #if defined CONFIG_YAFFS_WINCE
  29
  30 #include "ywinceenv.h"
  31
  32 #elif  defined __KERNEL__
  33
  34 #include "moduleconfig.h"
  35
  36 /* Linux kernel */
  37
  38 #include <linux/version.h>
  39 #define MTD_VERSION_CODE LINUX_VERSION_CODE
  40
  41 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19))
  42 #include <linux/config.h>
  43 #endif
  44 #include <linux/kernel.h>
  45 #include <linux/mm.h>
  46 #include <linux/sched.h>
  47 #include <linux/string.h>
  48 #include <linux/slab.h>
  49 #include <linux/vmalloc.h>
  50
  51 #define YCHAR char
  52 #define YUCHAR unsigned char
  53 #define _Y(x)     x
  54 #define yaffs_strcpy(a,b)    strcpy(a,b)
  55 #define yaffs_strncpy(a,b,c) strncpy(a,b,c)
  56 #define yaffs_strncmp(a,b,c) strncmp(a,b,c)
  57 #define yaffs_strlen(s)      strlen(s)
  58 #define yaffs_sprintf        sprintf
  59 #define yaffs_toupper(a)     toupper(a)
  60
  61 #define Y_INLINE inline
  62
  63 #define YAFFS_LOSTNFOUND_NAME           "lost+found"
  64 #define YAFFS_LOSTNFOUND_PREFIX         "obj"
  65
  66 /* #define YPRINTF(x) printk x */
  67 #define YMALLOC(x) kmalloc(x,GFP_KERNEL)
  68 #define YFREE(x)   kfree(x)
  69 #define YMALLOC_ALT(x) vmalloc(x)
  70 #define YFREE_ALT(x)   vfree(x)
  71 #define YMALLOC_DMA(x) YMALLOC(x)
  72
  73 // KR - added for use in scan so processes aren't blocked indefinitely.
  74 #define YYIELD() schedule()
  75
  76 #define YAFFS_ROOT_MODE                 0666
  77 #define YAFFS_LOSTNFOUND_MODE           0666
  78
  79 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
  80 #define Y_CURRENT_TIME CURRENT_TIME.tv_sec
  81 #define Y_TIME_CONVERT(x) (x).tv_sec
  82 #else
  83 #define Y_CURRENT_TIME CURRENT_TIME
  84 #define Y_TIME_CONVERT(x) (x)
  85 #endif
  86
  87 #define yaffs_SumCompare(x,y) ((x) == (y))
  88 #define yaffs_strcmp(a,b) strcmp(a,b)
  89
  90 #define TENDSTR "\n"
  91 #define TSTR(x) KERN_WARNING x
  92 #define TOUT(p) printk p
  93
  94 #define yaffs_trace(mask, fmt, args...) \
  95         do { if ((mask) & (yaffs_traceMask|YAFFS_TRACE_ERROR)) \
  96                 printk(KERN_WARNING "yaffs: " fmt, ## args); \
  97         } while (0)
  98
  99 #define compile_time_assertion(assertion) \
 100         ({ int x = __builtin_choose_expr(assertion, 0, (void)0); (void) x; })
 101
 102 #elif defined CONFIG_YAFFS_DIRECT
 103
 104 #define MTD_VERSION_CODE MTD_VERSION(2,6,22)
 105
 106 /* Direct interface */
 107 #include "ydirectenv.h"
 108
 109 #elif defined CONFIG_YAFFS_UTIL
 110
 111 /* Stuff for YAFFS utilities */
 112
 113 #include "stdlib.h"
 114 #include "stdio.h"
 115 #include "string.h"
 116
 117 #include "devextras.h"
 118
 119 #define YMALLOC(x) malloc(x)
 120 #define YFREE(x)   free(x)
 121 #define YMALLOC_ALT(x) malloc(x)
 122 #define YFREE_ALT(x) free(x)
 123
 124 #define YCHAR char
 125 #define YUCHAR unsigned char
 126 #define _Y(x)     x
 127 #define yaffs_strcpy(a,b)    strcpy(a,b)
 128 #define yaffs_strncpy(a,b,c) strncpy(a,b,c)
 129 #define yaffs_strlen(s)      strlen(s)
 130 #define yaffs_sprintf        sprintf
 131 #define yaffs_toupper(a)     toupper(a)
 132
 133 #define Y_INLINE inline
 134
 135 /* #define YINFO(s) YPRINTF(( __FILE__ " %d %s\n",__LINE__,s)) */
 136 /* #define YALERT(s) YINFO(s) */
 137
 138 #define TENDSTR "\n"
 139 #define TSTR(x) x
 140 #define TOUT(p) printf p
 141
 142 #define YAFFS_LOSTNFOUND_NAME           "lost+found"
 143 #define YAFFS_LOSTNFOUND_PREFIX         "obj"
 144 /* #define YPRINTF(x) printf x */
 145
 146 #define YAFFS_ROOT_MODE                         0666
 147 #define YAFFS_LOSTNFOUND_MODE           0666
 148
 149 #define yaffs_SumCompare(x,y) ((x) == (y))
 150 #define yaffs_strcmp(a,b) strcmp(a,b)
 151
 152 #else
 153 /* Should have specified a configuration type */
 154 #error Unknown configuration
 155
 156 #endif
 157
 158 /* see yaffs_fs.c */
 159 extern unsigned int yaffs_traceMask;
 160 extern unsigned int yaffs_wr_attempts;
 161
 162 /*
 163  * Tracing flags.
 164  * The flags masked in YAFFS_TRACE_ALWAYS are always traced.
 165  */
 166
 167 #define YAFFS_TRACE_OS                  0x00000002
 168 #define YAFFS_TRACE_ALLOCATE            0x00000004
 169 #define YAFFS_TRACE_SCAN                0x00000008
 170 #define YAFFS_TRACE_BAD_BLOCKS          0x00000010
 171 #define YAFFS_TRACE_ERASE               0x00000020
 172 #define YAFFS_TRACE_GC                  0x00000040
 173 #define YAFFS_TRACE_WRITE               0x00000080
 174 #define YAFFS_TRACE_TRACING             0x00000100
 175 #define YAFFS_TRACE_DELETION            0x00000200
 176 #define YAFFS_TRACE_BUFFERS             0x00000400
 177 #define YAFFS_TRACE_NANDACCESS          0x00000800
 178 #define YAFFS_TRACE_GC_DETAIL           0x00001000
 179 #define YAFFS_TRACE_SCAN_DEBUG          0x00002000
 180 #define YAFFS_TRACE_MTD                 0x00004000
 181 #define YAFFS_TRACE_CHECKPOINT          0x00008000
 182
 183 #define YAFFS_TRACE_VERIFY              0x00010000
 184 #define YAFFS_TRACE_VERIFY_NAND         0x00020000
 185 #define YAFFS_TRACE_VERIFY_FULL         0x00040000
 186 #define YAFFS_TRACE_VERIFY_ALL          0x000F0000
 187
 188
 189 #define YAFFS_TRACE_ERROR               0x40000000
 190 #define YAFFS_TRACE_BUG                 0x80000000
 191 #define YAFFS_TRACE_ALWAYS              0xF0000000
 192
 193
 194 #define T(mask,p) do{ if((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p);} while(0)
 195
 196 #ifndef YBUG
 197 #define YBUG() do {T(YAFFS_TRACE_BUG,(TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR),__LINE__));} while(0)
 198 #endif
 199
 200 #endif