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 #if defined CONFIG_YAFFS_WINCE
  21
  22 #include "ywinceenv.h"
  23
  24 #elif  defined __KERNEL__
  25
  26 #include "moduleconfig.h"
  27
  28 /* Linux kernel */
  29 #include <linux/version.h>
  30 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19))
  31 #include <linux/config.h>
  32 #endif
  33 #include <linux/kernel.h>
  34 #include <linux/mm.h>
  35 #include <linux/sched.h>
  36 #include <linux/string.h>
  37 #include <linux/slab.h>
  38 #include <linux/vmalloc.h>
  39
  40 #define YCHAR char
  41 #define YUCHAR unsigned char
  42 #define _Y(x)     x
  43 #define yaffs_strcpy(a,b)    strcpy(a,b)
  44 #define yaffs_strncpy(a,b,c) strncpy(a,b,c)
  45 #define yaffs_strncmp(a,b,c) strncmp(a,b,c)
  46 #define yaffs_strlen(s)      strlen(s)
  47 #define yaffs_sprintf        sprintf
  48 #define yaffs_toupper(a)     toupper(a)
  49
  50 #define Y_INLINE inline
  51
  52 #define YAFFS_LOSTNFOUND_NAME           "lost+found"
  53 #define YAFFS_LOSTNFOUND_PREFIX         "obj"
  54
  55 /* #define YPRINTF(x) printk x */
  56 #define YMALLOC(x) kmalloc(x,GFP_KERNEL)
  57 #define YFREE(x)   kfree(x)
  58 #define YMALLOC_ALT(x) vmalloc(x)
  59 #define YFREE_ALT(x)   vfree(x)
  60 #define YMALLOC_DMA(x) YMALLOC(x)
  61
  62 // KR - added for use in scan so processes aren't blocked indefinitely.
  63 #define YYIELD() schedule()
  64
  65 #define YAFFS_ROOT_MODE                 0666
  66 #define YAFFS_LOSTNFOUND_MODE           0666
  67
  68 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
  69 #define Y_CURRENT_TIME CURRENT_TIME.tv_sec
  70 #define Y_TIME_CONVERT(x) (x).tv_sec
  71 #else
  72 #define Y_CURRENT_TIME CURRENT_TIME
  73 #define Y_TIME_CONVERT(x) (x)
  74 #endif
  75
  76 #define yaffs_SumCompare(x,y) ((x) == (y))
  77 #define yaffs_strcmp(a,b) strcmp(a,b)
  78
  79 #define TENDSTR "\n"
  80 #define TSTR(x) KERN_WARNING x
  81 #define TOUT(p) printk p
  82
  83 #define yaffs_trace(mask, fmt, args...) \
  84         do { if ((mask) & (yaffs_traceMask|YAFFS_TRACE_ERROR)) \
  85                 printk(KERN_WARNING "yaffs: " fmt, ## args); \
  86         } while (0)
  87
  88 #define compile_time_assertion(assertion) \
  89         ({ int x = __builtin_choose_expr(assertion, 0, (void)0); (void) x; })
  90
  91 #elif defined CONFIG_YAFFS_DIRECT
  92
  93 /* Direct interface */
  94 #include "ydirectenv.h"
  95
  96 #elif defined CONFIG_YAFFS_UTIL
  97
  98 /* Stuff for YAFFS utilities */
  99
 100 #include "stdlib.h"
 101 #include "stdio.h"
 102 #include "string.h"
 103
 104 #include "devextras.h"
 105
 106 #define YMALLOC(x) malloc(x)
 107 #define YFREE(x)   free(x)
 108 #define YMALLOC_ALT(x) malloc(x)
 109 #define YFREE_ALT(x) free(x)
 110
 111 #define YCHAR char
 112 #define YUCHAR unsigned char
 113 #define _Y(x)     x
 114 #define yaffs_strcpy(a,b)    strcpy(a,b)
 115 #define yaffs_strncpy(a,b,c) strncpy(a,b,c)
 116 #define yaffs_strlen(s)      strlen(s)
 117 #define yaffs_sprintf        sprintf
 118 #define yaffs_toupper(a)     toupper(a)
 119
 120 #define Y_INLINE inline
 121
 122 /* #define YINFO(s) YPRINTF(( __FILE__ " %d %s\n",__LINE__,s)) */
 123 /* #define YALERT(s) YINFO(s) */
 124
 125 #define TENDSTR "\n"
 126 #define TSTR(x) x
 127 #define TOUT(p) printf p
 128
 129 #define YAFFS_LOSTNFOUND_NAME           "lost+found"
 130 #define YAFFS_LOSTNFOUND_PREFIX         "obj"
 131 /* #define YPRINTF(x) printf x */
 132
 133 #define YAFFS_ROOT_MODE                         0666
 134 #define YAFFS_LOSTNFOUND_MODE           0666
 135
 136 #define yaffs_SumCompare(x,y) ((x) == (y))
 137 #define yaffs_strcmp(a,b) strcmp(a,b)
 138
 139 #else
 140 /* Should have specified a configuration type */
 141 #error Unknown configuration
 142
 143 #endif
 144
 145 /* see yaffs_fs.c */
 146 extern unsigned int yaffs_traceMask;
 147 extern unsigned int yaffs_wr_attempts;
 148
 149 /*
 150  * Tracing flags.
 151  * The flags masked in YAFFS_TRACE_ALWAYS are always traced.
 152  */
 153
 154 #define YAFFS_TRACE_OS                  0x00000002
 155 #define YAFFS_TRACE_ALLOCATE            0x00000004
 156 #define YAFFS_TRACE_SCAN                0x00000008
 157 #define YAFFS_TRACE_BAD_BLOCKS          0x00000010
 158 #define YAFFS_TRACE_ERASE               0x00000020
 159 #define YAFFS_TRACE_GC                  0x00000040
 160 #define YAFFS_TRACE_WRITE               0x00000080
 161 #define YAFFS_TRACE_TRACING             0x00000100
 162 #define YAFFS_TRACE_DELETION            0x00000200
 163 #define YAFFS_TRACE_BUFFERS             0x00000400
 164 #define YAFFS_TRACE_NANDACCESS          0x00000800
 165 #define YAFFS_TRACE_GC_DETAIL           0x00001000
 166 #define YAFFS_TRACE_SCAN_DEBUG          0x00002000
 167 #define YAFFS_TRACE_MTD                 0x00004000
 168 #define YAFFS_TRACE_CHECKPOINT          0x00008000
 169
 170 #define YAFFS_TRACE_VERIFY              0x00010000
 171 #define YAFFS_TRACE_VERIFY_NAND         0x00020000
 172 #define YAFFS_TRACE_VERIFY_FULL         0x00040000
 173 #define YAFFS_TRACE_VERIFY_ALL          0x000F0000
 174
 175
 176 #define YAFFS_TRACE_ERROR               0x40000000
 177 #define YAFFS_TRACE_BUG                 0x80000000
 178 #define YAFFS_TRACE_ALWAYS              0xF0000000
 179
 180
 181 #define T(mask,p) do{ if((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p);} while(0)
 182
 183 #ifndef CONFIG_YAFFS_WINCE
 184 #define YBUG() T(YAFFS_TRACE_BUG,(TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR),__LINE__))
 185 #endif
 186
 187 #endif