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_strcat(a, b) strcat(a, b) 55 #define yaffs_strcpy(a, b) strcpy(a, b) 56 #define yaffs_strncpy(a, b, c) strncpy(a, b, c) 57 #define yaffs_strncmp(a, b, c) strncmp(a, b, c) 58 #define yaffs_strlen(s) strlen(s) 59 #define yaffs_sprintf sprintf 60 #define yaffs_toupper(a) toupper(a) 61 62 #define Y_INLINE inline 63 64 #define YAFFS_LOSTNFOUND_NAME "lost+found" 65 #define YAFFS_LOSTNFOUND_PREFIX "obj" 66 67 /* #define YPRINTF(x) printk x */ 68 #define YMALLOC(x) kmalloc(x, GFP_NOFS) 69 #define YFREE(x) kfree(x) 70 #define YMALLOC_ALT(x) vmalloc(x) 71 #define YFREE_ALT(x) vfree(x) 72 #define YMALLOC_DMA(x) YMALLOC(x) 73 74 /* KR - added for use in scan so processes aren't blocked indefinitely. */ 75 #define YYIELD() schedule() 76 77 #define YAFFS_ROOT_MODE 0666 78 #define YAFFS_LOSTNFOUND_MODE 0666 79 80 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2, 5, 0)) 81 #define Y_CURRENT_TIME CURRENT_TIME.tv_sec 82 #define Y_TIME_CONVERT(x) (x).tv_sec 83 #else 84 #define Y_CURRENT_TIME CURRENT_TIME 85 #define Y_TIME_CONVERT(x) (x) 86 #endif 87 88 #define yaffs_SumCompare(x, y) ((x) == (y)) 89 #define yaffs_strcmp(a, b) strcmp(a, b) 90 91 #define TENDSTR "\n" 92 #define TSTR(x) KERN_WARNING x 93 #define TCONT(x) x 94 #define TOUT(p) printk p 95 96 #define yaffs_trace(mask, fmt, args...) \ 97 do { if ((mask) & (yaffs_traceMask|YAFFS_TRACE_ERROR)) \ 98 printk(KERN_WARNING "yaffs: " fmt, ## args); \ 99 } while (0) 100 101 #define compile_time_assertion(assertion) \ 102 ({ int x = __builtin_choose_expr(assertion, 0, (void)0); (void) x; }) 103 104 #elif defined CONFIG_YAFFS_DIRECT 105 106 #define MTD_VERSION_CODE MTD_VERSION(2, 6, 22) 107 108 /* Direct interface */ 109 #include "ydirectenv.h" 110 111 #elif defined CONFIG_YAFFS_UTIL 112 113 /* Stuff for YAFFS utilities */ 114 115 #include "stdlib.h" 116 #include "stdio.h" 117 #include "string.h" 118 119 #include "devextras.h" 120 121 #define YMALLOC(x) malloc(x) 122 #define YFREE(x) free(x) 123 #define YMALLOC_ALT(x) malloc(x) 124 #define YFREE_ALT(x) free(x) 125 126 #define YCHAR char 127 #define YUCHAR unsigned char 128 #define _Y(x) x 129 #define yaffs_strcat(a, b) strcat(a, b) 130 #define yaffs_strcpy(a, b) strcpy(a, b) 131 #define yaffs_strncpy(a, b, c) strncpy(a, b, c) 132 #define yaffs_strlen(s) strlen(s) 133 #define yaffs_sprintf sprintf 134 #define yaffs_toupper(a) toupper(a) 135 136 #define Y_INLINE inline 137 138 /* #define YINFO(s) YPRINTF(( __FILE__ " %d %s\n",__LINE__,s)) */ 139 /* #define YALERT(s) YINFO(s) */ 140 141 #define TENDSTR "\n" 142 #define TSTR(x) x 143 #define TOUT(p) printf p 144 145 #define YAFFS_LOSTNFOUND_NAME "lost+found" 146 #define YAFFS_LOSTNFOUND_PREFIX "obj" 147 /* #define YPRINTF(x) printf x */ 148 149 #define YAFFS_ROOT_MODE 0666 150 #define YAFFS_LOSTNFOUND_MODE 0666 151 152 #define yaffs_SumCompare(x, y) ((x) == (y)) 153 #define yaffs_strcmp(a, b) strcmp(a, b) 154 155 #else 156 /* Should have specified a configuration type */ 157 #error Unknown configuration 158 159 #endif 160 161 /* see yaffs_fs.c */ 162 extern unsigned int yaffs_traceMask; 163 extern unsigned int yaffs_wr_attempts; 164 165 /* 166 * Tracing flags. 167 * The flags masked in YAFFS_TRACE_ALWAYS are always traced. 168 */ 169 170 #define YAFFS_TRACE_OS 0x00000002 171 #define YAFFS_TRACE_ALLOCATE 0x00000004 172 #define YAFFS_TRACE_SCAN 0x00000008 173 #define YAFFS_TRACE_BAD_BLOCKS 0x00000010 174 #define YAFFS_TRACE_ERASE 0x00000020 175 #define YAFFS_TRACE_GC 0x00000040 176 #define YAFFS_TRACE_WRITE 0x00000080 177 #define YAFFS_TRACE_TRACING 0x00000100 178 #define YAFFS_TRACE_DELETION 0x00000200 179 #define YAFFS_TRACE_BUFFERS 0x00000400 180 #define YAFFS_TRACE_NANDACCESS 0x00000800 181 #define YAFFS_TRACE_GC_DETAIL 0x00001000 182 #define YAFFS_TRACE_SCAN_DEBUG 0x00002000 183 #define YAFFS_TRACE_MTD 0x00004000 184 #define YAFFS_TRACE_CHECKPOINT 0x00008000 185 186 #define YAFFS_TRACE_VERIFY 0x00010000 187 #define YAFFS_TRACE_VERIFY_NAND 0x00020000 188 #define YAFFS_TRACE_VERIFY_FULL 0x00040000 189 #define YAFFS_TRACE_VERIFY_ALL 0x000F0000 190 191 192 #define YAFFS_TRACE_ERROR 0x40000000 193 #define YAFFS_TRACE_BUG 0x80000000 194 #define YAFFS_TRACE_ALWAYS 0xF0000000 195 196 197 #define T(mask, p) do { if ((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p); } while (0) 198 199 #ifndef YBUG 200 #define YBUG() do {T(YAFFS_TRACE_BUG, (TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR), __LINE__)); } while (0) 201 #endif 202 203 #endif 204