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Rev | Author | Line No. | Line |
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1408 | serge | 1 | #ifndef _LINUX_KERNEL_H |
2 | #define _LINUX_KERNEL_H |
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3 | |||
4 | /* |
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5 | * 'kernel.h' contains some often-used function prototypes etc |
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6 | */ |
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7 | |||
8 | #ifdef __KERNEL__ |
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9 | |||
10 | #include |
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11 | #include |
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12 | #include |
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13 | #include |
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1970 | serge | 14 | #include |
4110 | Serge | 15 | #include |
2967 | Serge | 16 | #include |
17 | |||
18 | #define __init |
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19 | |||
1964 | serge | 20 | #define USHRT_MAX ((u16)(~0U)) |
21 | #define SHRT_MAX ((s16)(USHRT_MAX>>1)) |
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22 | #define SHRT_MIN ((s16)(-SHRT_MAX - 1)) |
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1408 | serge | 23 | #define INT_MAX ((int)(~0U>>1)) |
24 | #define INT_MIN (-INT_MAX - 1) |
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25 | #define UINT_MAX (~0U) |
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26 | #define LONG_MAX ((long)(~0UL>>1)) |
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27 | #define LONG_MIN (-LONG_MAX - 1) |
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28 | #define ULONG_MAX (~0UL) |
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29 | #define LLONG_MAX ((long long)(~0ULL>>1)) |
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30 | #define LLONG_MIN (-LLONG_MAX - 1) |
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31 | #define ULLONG_MAX (~0ULL) |
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3031 | serge | 32 | #define SIZE_MAX (~(size_t)0) |
1408 | serge | 33 | |
34 | #define ALIGN(x,a) __ALIGN_MASK(x,(typeof(x))(a)-1) |
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35 | #define __ALIGN_MASK(x,mask) (((x)+(mask))&~(mask)) |
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36 | #define PTR_ALIGN(p, a) ((typeof(p))ALIGN((unsigned long)(p), (a))) |
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37 | #define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0) |
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38 | |||
3747 | Serge | 39 | |
40 | #define __round_mask(x, y) ((__typeof__(x))((y)-1)) |
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41 | #define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1) |
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42 | |||
3039 | serge | 43 | /* The `const' in roundup() prevents gcc-3.3 from calling __divdi3 */ |
44 | #define roundup(x, y) ( \ |
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45 | { \ |
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46 | const typeof(y) __y = y; \ |
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47 | (((x) + (__y - 1)) / __y) * __y; \ |
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48 | } \ |
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49 | ) |
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2967 | Serge | 50 | |
51 | #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d)) |
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4103 | Serge | 52 | #define DIV_ROUND_UP_ULL(ll,d) \ |
53 | ({ unsigned long long _tmp = (ll)+(d)-1; do_div(_tmp, d); _tmp; }) |
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2967 | Serge | 54 | #define DIV_ROUND_CLOSEST(x, divisor)( \ |
55 | { \ |
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56 | typeof(divisor) __divisor = divisor; \ |
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57 | (((x) + ((__divisor) / 2)) / (__divisor)); \ |
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58 | } \ |
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59 | ) |
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60 | |||
4103 | Serge | 61 | |
62 | #define clamp_t(type, val, min, max) ({ \ |
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63 | type __val = (val); \ |
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64 | type __min = (min); \ |
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65 | type __max = (max); \ |
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66 | __val = __val < __min ? __min: __val; \ |
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67 | __val > __max ? __max: __val; }) |
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68 | |||
69 | |||
70 | |||
1408 | serge | 71 | /** |
72 | * upper_32_bits - return bits 32-63 of a number |
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73 | * @n: the number we're accessing |
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74 | * |
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75 | * A basic shift-right of a 64- or 32-bit quantity. Use this to suppress |
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76 | * the "right shift count >= width of type" warning when that quantity is |
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77 | * 32-bits. |
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78 | */ |
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79 | #define upper_32_bits(n) ((u32)(((n) >> 16) >> 16)) |
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80 | |||
81 | /** |
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82 | * lower_32_bits - return bits 0-31 of a number |
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83 | * @n: the number we're accessing |
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84 | */ |
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85 | #define lower_32_bits(n) ((u32)(n)) |
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86 | |||
87 | #define KERN_EMERG "<0>" /* system is unusable */ |
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88 | #define KERN_ALERT "<1>" /* action must be taken immediately */ |
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89 | #define KERN_CRIT "<2>" /* critical conditions */ |
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90 | #define KERN_ERR "<3>" /* error conditions */ |
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91 | #define KERN_WARNING "<4>" /* warning conditions */ |
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92 | #define KERN_NOTICE "<5>" /* normal but significant condition */ |
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93 | #define KERN_INFO "<6>" /* informational */ |
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94 | #define KERN_DEBUG "<7>" /* debug-level messages */ |
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1970 | serge | 95 | extern const char hex_asc[]; |
96 | #define hex_asc_lo(x) hex_asc[((x) & 0x0f)] |
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97 | #define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4] |
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1408 | serge | 98 | |
1970 | serge | 99 | static inline char *pack_hex_byte(char *buf, u8 byte) |
100 | { |
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101 | *buf++ = hex_asc_hi(byte); |
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102 | *buf++ = hex_asc_lo(byte); |
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103 | return buf; |
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104 | } |
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105 | |||
3480 | Serge | 106 | enum { |
107 | DUMP_PREFIX_NONE, |
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108 | DUMP_PREFIX_ADDRESS, |
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109 | DUMP_PREFIX_OFFSET |
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110 | }; |
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1970 | serge | 111 | |
3480 | Serge | 112 | int hex_to_bin(char ch); |
113 | int hex2bin(u8 *dst, const char *src, size_t count); |
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1970 | serge | 114 | |
3480 | Serge | 115 | |
1408 | serge | 116 | //int printk(const char *fmt, ...); |
117 | |||
118 | #define printk(fmt, arg...) dbgprintf(fmt , ##arg) |
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119 | |||
120 | |||
121 | /* |
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122 | * min()/max()/clamp() macros that also do |
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123 | * strict type-checking.. See the |
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124 | * "unnecessary" pointer comparison. |
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125 | */ |
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126 | #define min(x, y) ({ \ |
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127 | typeof(x) _min1 = (x); \ |
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128 | typeof(y) _min2 = (y); \ |
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129 | (void) (&_min1 == &_min2); \ |
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130 | _min1 < _min2 ? _min1 : _min2; }) |
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131 | |||
132 | #define max(x, y) ({ \ |
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133 | typeof(x) _max1 = (x); \ |
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134 | typeof(y) _max2 = (y); \ |
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135 | (void) (&_max1 == &_max2); \ |
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136 | _max1 > _max2 ? _max1 : _max2; }) |
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137 | |||
1970 | serge | 138 | #define min3(x, y, z) ({ \ |
139 | typeof(x) _min1 = (x); \ |
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140 | typeof(y) _min2 = (y); \ |
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141 | typeof(z) _min3 = (z); \ |
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142 | (void) (&_min1 == &_min2); \ |
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143 | (void) (&_min1 == &_min3); \ |
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144 | _min1 < _min2 ? (_min1 < _min3 ? _min1 : _min3) : \ |
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145 | (_min2 < _min3 ? _min2 : _min3); }) |
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146 | |||
147 | #define max3(x, y, z) ({ \ |
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148 | typeof(x) _max1 = (x); \ |
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149 | typeof(y) _max2 = (y); \ |
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150 | typeof(z) _max3 = (z); \ |
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151 | (void) (&_max1 == &_max2); \ |
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152 | (void) (&_max1 == &_max3); \ |
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153 | _max1 > _max2 ? (_max1 > _max3 ? _max1 : _max3) : \ |
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154 | (_max2 > _max3 ? _max2 : _max3); }) |
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155 | |||
156 | /** |
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157 | * min_not_zero - return the minimum that is _not_ zero, unless both are zero |
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158 | * @x: value1 |
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159 | * @y: value2 |
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160 | */ |
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161 | #define min_not_zero(x, y) ({ \ |
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162 | typeof(x) __x = (x); \ |
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163 | typeof(y) __y = (y); \ |
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164 | __x == 0 ? __y : ((__y == 0) ? __x : min(__x, __y)); }) |
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165 | |||
166 | /** |
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167 | * clamp - return a value clamped to a given range with strict typechecking |
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168 | * @val: current value |
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169 | * @min: minimum allowable value |
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170 | * @max: maximum allowable value |
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171 | * |
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172 | * This macro does strict typechecking of min/max to make sure they are of the |
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173 | * same type as val. See the unnecessary pointer comparisons. |
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174 | */ |
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175 | #define clamp(val, min, max) ({ \ |
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176 | typeof(val) __val = (val); \ |
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177 | typeof(min) __min = (min); \ |
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178 | typeof(max) __max = (max); \ |
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179 | (void) (&__val == &__min); \ |
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180 | (void) (&__val == &__max); \ |
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181 | __val = __val < __min ? __min: __val; \ |
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182 | __val > __max ? __max: __val; }) |
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183 | |||
1408 | serge | 184 | /* |
185 | * ..and if you can't take the strict |
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186 | * types, you can specify one yourself. |
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187 | * |
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188 | * Or not use min/max/clamp at all, of course. |
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189 | */ |
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190 | #define min_t(type, x, y) ({ \ |
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191 | type __min1 = (x); \ |
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192 | type __min2 = (y); \ |
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193 | __min1 < __min2 ? __min1: __min2; }) |
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194 | |||
195 | #define max_t(type, x, y) ({ \ |
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196 | type __max1 = (x); \ |
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197 | type __max2 = (y); \ |
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198 | __max1 > __max2 ? __max1: __max2; }) |
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199 | |||
200 | /** |
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201 | * container_of - cast a member of a structure out to the containing structure |
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202 | * @ptr: the pointer to the member. |
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203 | * @type: the type of the container struct this is embedded in. |
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204 | * @member: the name of the member within the struct. |
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205 | * |
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206 | */ |
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207 | #define container_of(ptr, type, member) ({ \ |
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208 | const typeof( ((type *)0)->member ) *__mptr = (ptr); \ |
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209 | (type *)( (char *)__mptr - offsetof(type,member) );}) |
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210 | |||
211 | |||
212 | static inline void *kcalloc(size_t n, size_t size, uint32_t flags) |
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213 | { |
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214 | if (n != 0 && size > ULONG_MAX / n) |
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215 | return NULL; |
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216 | return kzalloc(n * size, 0); |
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217 | } |
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218 | |||
1968 | serge | 219 | |
1412 | serge | 220 | void free (void *ptr); |
221 | |||
1408 | serge | 222 | #endif /* __KERNEL__ */ |
223 | |||
224 | typedef unsigned long pgprotval_t; |
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225 | |||
226 | typedef struct pgprot { pgprotval_t pgprot; } pgprot_t; |
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227 | |||
3262 | Serge | 228 | struct file |
229 | { |
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230 | struct page **pages; /* physical memory backend */ |
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231 | unsigned int count; |
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232 | unsigned int allocated; |
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233 | void *vma; |
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234 | }; |
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235 | |||
1408 | serge | 236 | struct vm_area_struct {}; |
237 | struct address_space {}; |
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238 | |||
1430 | serge | 239 | struct device |
240 | { |
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241 | struct device *parent; |
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242 | void *driver_data; |
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243 | }; |
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244 | |||
245 | static inline void dev_set_drvdata(struct device *dev, void *data) |
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246 | { |
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247 | dev->driver_data = data; |
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248 | } |
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249 | |||
250 | static inline void *dev_get_drvdata(struct device *dev) |
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251 | { |
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252 | return dev->driver_data; |
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253 | } |
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254 | |||
1408 | serge | 255 | #define preempt_disable() do { } while (0) |
256 | #define preempt_enable_no_resched() do { } while (0) |
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257 | #define preempt_enable() do { } while (0) |
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258 | #define preempt_check_resched() do { } while (0) |
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259 | |||
260 | #define preempt_disable_notrace() do { } while (0) |
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261 | #define preempt_enable_no_resched_notrace() do { } while (0) |
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262 | #define preempt_enable_notrace() do { } while (0) |
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263 | |||
1964 | serge | 264 | #define in_dbg_master() (0) |
1408 | serge | 265 | |
2005 | serge | 266 | #define HZ 100 |
267 | |||
2967 | Serge | 268 | struct tvec_base; |
2005 | serge | 269 | |
2967 | Serge | 270 | struct timer_list { |
271 | struct list_head entry; |
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272 | unsigned long expires; |
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273 | |||
274 | void (*function)(unsigned long); |
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275 | unsigned long data; |
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4125 | Serge | 276 | u32 handle; |
2967 | Serge | 277 | }; |
278 | |||
4125 | Serge | 279 | #define setup_timer(_timer, _fn, _data) \ |
280 | do { \ |
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281 | (_timer)->function = (_fn); \ |
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282 | (_timer)->data = (_data); \ |
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283 | (_timer)->handle = 0; \ |
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284 | } while (0) |
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285 | |||
4292 | Serge | 286 | int del_timer(struct timer_list *timer); |
4125 | Serge | 287 | |
4292 | Serge | 288 | # define del_timer_sync(t) del_timer(t) |
289 | |||
2967 | Serge | 290 | struct timespec { |
291 | long tv_sec; /* seconds */ |
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292 | long tv_nsec; /* nanoseconds */ |
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293 | }; |
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294 | |||
295 | |||
4292 | Serge | 296 | #define mb() asm volatile("mfence" : : : "memory") |
297 | #define rmb() asm volatile("lfence" : : : "memory") |
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298 | #define wmb() asm volatile("sfence" : : : "memory") |
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299 | |||
300 | |||
2967 | Serge | 301 | #define build_mmio_read(name, size, type, reg, barrier) \ |
302 | static inline type name(const volatile void __iomem *addr) \ |
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303 | { type ret; asm volatile("mov" size " %1,%0":reg (ret) \ |
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304 | :"m" (*(volatile type __force *)addr) barrier); return ret; } |
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305 | |||
306 | #define build_mmio_write(name, size, type, reg, barrier) \ |
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307 | static inline void name(type val, volatile void __iomem *addr) \ |
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308 | { asm volatile("mov" size " %0,%1": :reg (val), \ |
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309 | "m" (*(volatile type __force *)addr) barrier); } |
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310 | |||
311 | build_mmio_read(readb, "b", unsigned char, "=q", :"memory") |
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312 | build_mmio_read(readw, "w", unsigned short, "=r", :"memory") |
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313 | build_mmio_read(readl, "l", unsigned int, "=r", :"memory") |
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314 | |||
315 | build_mmio_read(__readb, "b", unsigned char, "=q", ) |
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316 | build_mmio_read(__readw, "w", unsigned short, "=r", ) |
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317 | build_mmio_read(__readl, "l", unsigned int, "=r", ) |
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318 | |||
319 | build_mmio_write(writeb, "b", unsigned char, "q", :"memory") |
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320 | build_mmio_write(writew, "w", unsigned short, "r", :"memory") |
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321 | build_mmio_write(writel, "l", unsigned int, "r", :"memory") |
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322 | |||
323 | build_mmio_write(__writeb, "b", unsigned char, "q", ) |
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324 | build_mmio_write(__writew, "w", unsigned short, "r", ) |
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325 | build_mmio_write(__writel, "l", unsigned int, "r", ) |
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326 | |||
327 | #define readb_relaxed(a) __readb(a) |
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328 | #define readw_relaxed(a) __readw(a) |
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329 | #define readl_relaxed(a) __readl(a) |
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330 | #define __raw_readb __readb |
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331 | #define __raw_readw __readw |
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332 | #define __raw_readl __readl |
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333 | |||
334 | #define __raw_writeb __writeb |
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335 | #define __raw_writew __writew |
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336 | #define __raw_writel __writel |
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337 | |||
338 | static inline __u64 readq(const volatile void __iomem *addr) |
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339 | { |
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340 | const volatile u32 __iomem *p = addr; |
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341 | u32 low, high; |
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342 | |||
343 | low = readl(p); |
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344 | high = readl(p + 1); |
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345 | |||
346 | return low + ((u64)high << 32); |
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347 | } |
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348 | |||
349 | static inline void writeq(__u64 val, volatile void __iomem *addr) |
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350 | { |
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351 | writel(val, addr); |
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352 | writel(val >> 32, addr+4); |
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353 | } |
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354 | |||
3031 | serge | 355 | #define swap(a, b) \ |
356 | do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0) |
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2967 | Serge | 357 | |
3031 | serge | 358 | |
2967 | Serge | 359 | #define mmiowb() barrier() |
360 | |||
361 | #define dev_err(dev, format, arg...) \ |
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362 | printk("Error %s " format, __func__ , ## arg) |
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363 | |||
364 | #define dev_warn(dev, format, arg...) \ |
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365 | printk("Warning %s " format, __func__ , ## arg) |
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366 | |||
367 | #define dev_info(dev, format, arg...) \ |
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368 | printk("Info %s " format , __func__, ## arg) |
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369 | |||
3480 | Serge | 370 | //#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) |
371 | #define BUILD_BUG_ON(condition) |
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2967 | Serge | 372 | |
373 | struct page |
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374 | { |
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375 | unsigned int addr; |
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376 | }; |
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377 | |||
3243 | Serge | 378 | #define page_to_phys(page) ((dma_addr_t)(page)) |
2967 | Serge | 379 | |
380 | struct vm_fault { |
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381 | unsigned int flags; /* FAULT_FLAG_xxx flags */ |
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382 | pgoff_t pgoff; /* Logical page offset based on vma */ |
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383 | void __user *virtual_address; /* Faulting virtual address */ |
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384 | |||
385 | struct page *page; /* ->fault handlers should return a |
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386 | * page here, unless VM_FAULT_NOPAGE |
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387 | * is set (which is also implied by |
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388 | * VM_FAULT_ERROR). |
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389 | */ |
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390 | }; |
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391 | |||
3031 | serge | 392 | struct pagelist { |
393 | dma_addr_t *page; |
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394 | unsigned int nents; |
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395 | }; |
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2967 | Serge | 396 | |
3391 | Serge | 397 | #define page_cache_release(page) FreePage(page_to_phys(page)) |
3243 | Serge | 398 | |
399 | #define alloc_page(gfp_mask) (struct page*)AllocPage() |
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400 | |||
3391 | Serge | 401 | #define __free_page(page) FreePage(page_to_phys(page)) |
402 | |||
403 | #define get_page(a) |
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404 | #define put_page(a) |
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405 | #define set_pages_uc(a,b) |
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406 | #define set_pages_wb(a,b) |
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407 | |||
408 | #define pci_map_page(dev, page, offset, size, direction) \ |
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409 | (dma_addr_t)( (offset)+page_to_phys(page)) |
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410 | |||
411 | #define pci_unmap_page(dev, dma_address, size, direction) |
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412 | |||
413 | #define GFP_TEMPORARY 0 |
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414 | #define __GFP_NOWARN 0 |
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415 | #define __GFP_NORETRY 0 |
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416 | #define GFP_NOWAIT 0 |
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417 | |||
418 | #define IS_ENABLED(a) 0 |
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419 | |||
420 | |||
421 | #define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x)) |
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422 | |||
423 | #define RCU_INIT_POINTER(p, v) \ |
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424 | do { \ |
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425 | p = (typeof(*v) __force __rcu *)(v); \ |
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426 | } while (0) |
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427 | |||
428 | |||
429 | #define rcu_dereference_raw(p) ({ \ |
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430 | typeof(p) _________p1 = ACCESS_ONCE(p); \ |
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431 | (_________p1); \ |
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432 | }) |
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433 | #define rcu_assign_pointer(p, v) \ |
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434 | ({ \ |
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435 | if (!__builtin_constant_p(v) || \ |
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436 | ((v) != NULL)) \ |
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437 | (p) = (v); \ |
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438 | }) |
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439 | |||
3482 | Serge | 440 | |
441 | unsigned int hweight16(unsigned int w); |
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442 | |||
443 | #define cpufreq_quick_get_max(x) GetCpuFreq() |
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444 | |||
445 | extern unsigned int tsc_khz; |
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446 | |||
3747 | Serge | 447 | #define on_each_cpu(func,info,wait) \ |
448 | ({ \ |
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449 | func(info); \ |
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450 | 0; \ |
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451 | }) |
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452 | |||
453 | |||
1408 | serge | 454 | #endif><>>>>>>>7>6>5>4>3>2>1>0>> |
455 |