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Rev | Author | Line No. | Line |
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5078 | serge | 1 | #include |
2 | #include |
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3 | #include |
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4 | #include |
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5271 | serge | 5 | #include "radeon.h" |
5078 | serge | 6 | |
7 | int x86_clflush_size; |
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8 | unsigned int tsc_khz; |
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9 | |||
10 | struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags) |
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11 | { |
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12 | struct file *filep; |
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13 | int count; |
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14 | |||
5271 | serge | 15 | filep = __builtin_malloc(sizeof(*filep)); |
5078 | serge | 16 | |
17 | if(unlikely(filep == NULL)) |
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18 | return ERR_PTR(-ENOMEM); |
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19 | |||
20 | count = size / PAGE_SIZE; |
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21 | |||
22 | filep->pages = kzalloc(sizeof(struct page *) * count, 0); |
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23 | if(unlikely(filep->pages == NULL)) |
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24 | { |
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25 | kfree(filep); |
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26 | return ERR_PTR(-ENOMEM); |
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27 | }; |
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28 | |||
29 | filep->count = count; |
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30 | filep->allocated = 0; |
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31 | filep->vma = NULL; |
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32 | |||
33 | // printf("%s file %p pages %p count %d\n", |
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34 | // __FUNCTION__,filep, filep->pages, count); |
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35 | |||
36 | return filep; |
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37 | } |
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38 | |||
39 | static void *check_bytes8(const u8 *start, u8 value, unsigned int bytes) |
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40 | { |
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41 | while (bytes) { |
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42 | if (*start != value) |
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43 | return (void *)start; |
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44 | start++; |
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45 | bytes--; |
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46 | } |
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47 | return NULL; |
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48 | } |
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49 | |||
50 | /** |
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51 | * memchr_inv - Find an unmatching character in an area of memory. |
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52 | * @start: The memory area |
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53 | * @c: Find a character other than c |
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54 | * @bytes: The size of the area. |
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55 | * |
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56 | * returns the address of the first character other than @c, or %NULL |
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57 | * if the whole buffer contains just @c. |
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58 | */ |
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59 | void *memchr_inv(const void *start, int c, size_t bytes) |
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60 | { |
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61 | u8 value = c; |
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62 | u64 value64; |
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63 | unsigned int words, prefix; |
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64 | |||
65 | if (bytes <= 16) |
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66 | return check_bytes8(start, value, bytes); |
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67 | |||
68 | value64 = value; |
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69 | #if defined(ARCH_HAS_FAST_MULTIPLIER) && BITS_PER_LONG == 64 |
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70 | value64 *= 0x0101010101010101; |
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71 | #elif defined(ARCH_HAS_FAST_MULTIPLIER) |
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72 | value64 *= 0x01010101; |
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73 | value64 |= value64 << 32; |
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74 | #else |
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75 | value64 |= value64 << 8; |
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76 | value64 |= value64 << 16; |
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77 | value64 |= value64 << 32; |
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78 | #endif |
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79 | |||
80 | prefix = (unsigned long)start % 8; |
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81 | if (prefix) { |
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82 | u8 *r; |
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83 | |||
84 | prefix = 8 - prefix; |
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85 | r = check_bytes8(start, value, prefix); |
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86 | if (r) |
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87 | return r; |
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88 | start += prefix; |
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89 | bytes -= prefix; |
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90 | } |
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91 | |||
92 | words = bytes / 8; |
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93 | |||
94 | while (words) { |
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95 | if (*(u64 *)start != value64) |
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96 | return check_bytes8(start, value, 8); |
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97 | start += 8; |
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98 | words--; |
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99 | } |
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100 | |||
101 | return check_bytes8(start, value, bytes % 8); |
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102 | } |
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103 | |||
104 | |||
105 | |||
106 | #define _U 0x01 /* upper */ |
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107 | #define _L 0x02 /* lower */ |
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108 | #define _D 0x04 /* digit */ |
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109 | #define _C 0x08 /* cntrl */ |
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110 | #define _P 0x10 /* punct */ |
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111 | #define _S 0x20 /* white space (space/lf/tab) */ |
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112 | #define _X 0x40 /* hex digit */ |
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113 | #define _SP 0x80 /* hard space (0x20) */ |
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114 | |||
115 | extern const unsigned char _ctype[]; |
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116 | |||
117 | #define __ismask(x) (_ctype[(int)(unsigned char)(x)]) |
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118 | |||
119 | #define isalnum(c) ((__ismask(c)&(_U|_L|_D)) != 0) |
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120 | #define isalpha(c) ((__ismask(c)&(_U|_L)) != 0) |
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121 | #define iscntrl(c) ((__ismask(c)&(_C)) != 0) |
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122 | #define isdigit(c) ((__ismask(c)&(_D)) != 0) |
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123 | #define isgraph(c) ((__ismask(c)&(_P|_U|_L|_D)) != 0) |
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124 | #define islower(c) ((__ismask(c)&(_L)) != 0) |
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125 | #define isprint(c) ((__ismask(c)&(_P|_U|_L|_D|_SP)) != 0) |
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126 | #define ispunct(c) ((__ismask(c)&(_P)) != 0) |
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127 | /* Note: isspace() must return false for %NUL-terminator */ |
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128 | #define isspace(c) ((__ismask(c)&(_S)) != 0) |
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129 | #define isupper(c) ((__ismask(c)&(_U)) != 0) |
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130 | #define isxdigit(c) ((__ismask(c)&(_D|_X)) != 0) |
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131 | |||
132 | #define isascii(c) (((unsigned char)(c))<=0x7f) |
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133 | #define toascii(c) (((unsigned char)(c))&0x7f) |
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134 | |||
135 | static inline unsigned char __tolower(unsigned char c) |
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136 | { |
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137 | if (isupper(c)) |
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138 | c -= 'A'-'a'; |
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139 | return c; |
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140 | } |
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141 | |||
142 | static inline unsigned char __toupper(unsigned char c) |
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143 | { |
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144 | if (islower(c)) |
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145 | c -= 'a'-'A'; |
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146 | return c; |
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147 | } |
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148 | |||
149 | #define tolower(c) __tolower(c) |
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150 | #define toupper(c) __toupper(c) |
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151 | |||
152 | /* |
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153 | * Fast implementation of tolower() for internal usage. Do not use in your |
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154 | * code. |
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155 | */ |
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156 | static inline char _tolower(const char c) |
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157 | { |
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158 | return c | 0x20; |
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159 | } |
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160 | |||
161 | |||
162 | //const char hex_asc[] = "0123456789abcdef"; |
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163 | |||
164 | /** |
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165 | * hex_to_bin - convert a hex digit to its real value |
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166 | * @ch: ascii character represents hex digit |
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167 | * |
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168 | * hex_to_bin() converts one hex digit to its actual value or -1 in case of bad |
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169 | * input. |
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170 | */ |
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171 | int hex_to_bin(char ch) |
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172 | { |
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173 | if ((ch >= '0') && (ch <= '9')) |
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174 | return ch - '0'; |
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175 | ch = tolower(ch); |
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176 | if ((ch >= 'a') && (ch <= 'f')) |
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177 | return ch - 'a' + 10; |
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178 | return -1; |
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179 | } |
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180 | EXPORT_SYMBOL(hex_to_bin); |
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181 | |||
182 | /** |
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183 | * hex2bin - convert an ascii hexadecimal string to its binary representation |
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184 | * @dst: binary result |
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185 | * @src: ascii hexadecimal string |
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186 | * @count: result length |
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187 | * |
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188 | * Return 0 on success, -1 in case of bad input. |
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189 | */ |
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190 | int hex2bin(u8 *dst, const char *src, size_t count) |
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191 | { |
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192 | while (count--) { |
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193 | int hi = hex_to_bin(*src++); |
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194 | int lo = hex_to_bin(*src++); |
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195 | |||
196 | if ((hi < 0) || (lo < 0)) |
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197 | return -1; |
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198 | |||
199 | *dst++ = (hi << 4) | lo; |
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200 | } |
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201 | return 0; |
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202 | } |
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203 | EXPORT_SYMBOL(hex2bin); |
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204 | |||
205 | /** |
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206 | * hex_dump_to_buffer - convert a blob of data to "hex ASCII" in memory |
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207 | * @buf: data blob to dump |
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208 | * @len: number of bytes in the @buf |
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209 | * @rowsize: number of bytes to print per line; must be 16 or 32 |
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210 | * @groupsize: number of bytes to print at a time (1, 2, 4, 8; default = 1) |
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211 | * @linebuf: where to put the converted data |
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212 | * @linebuflen: total size of @linebuf, including space for terminating NUL |
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213 | * @ascii: include ASCII after the hex output |
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214 | * |
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215 | * hex_dump_to_buffer() works on one "line" of output at a time, i.e., |
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216 | * 16 or 32 bytes of input data converted to hex + ASCII output. |
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217 | * |
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218 | * Given a buffer of u8 data, hex_dump_to_buffer() converts the input data |
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219 | * to a hex + ASCII dump at the supplied memory location. |
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220 | * The converted output is always NUL-terminated. |
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221 | * |
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222 | * E.g.: |
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223 | * hex_dump_to_buffer(frame->data, frame->len, 16, 1, |
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224 | * linebuf, sizeof(linebuf), true); |
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225 | * |
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226 | * example output buffer: |
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227 | * 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f @ABCDEFGHIJKLMNO |
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228 | */ |
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6104 | serge | 229 | int hex_dump_to_buffer(const void *buf, size_t len, int rowsize, int groupsize, |
230 | char *linebuf, size_t linebuflen, bool ascii) |
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5078 | serge | 231 | { |
232 | const u8 *ptr = buf; |
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6104 | serge | 233 | int ngroups; |
5078 | serge | 234 | u8 ch; |
235 | int j, lx = 0; |
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236 | int ascii_column; |
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6104 | serge | 237 | int ret; |
5078 | serge | 238 | |
239 | if (rowsize != 16 && rowsize != 32) |
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240 | rowsize = 16; |
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241 | |||
242 | if (len > rowsize) /* limit to one line at a time */ |
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243 | len = rowsize; |
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6104 | serge | 244 | if (!is_power_of_2(groupsize) || groupsize > 8) |
245 | groupsize = 1; |
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5078 | serge | 246 | if ((len % groupsize) != 0) /* no mixed size output */ |
247 | groupsize = 1; |
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248 | |||
6104 | serge | 249 | ngroups = len / groupsize; |
250 | ascii_column = rowsize * 2 + rowsize / groupsize + 1; |
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251 | |||
252 | if (!linebuflen) |
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253 | goto overflow1; |
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254 | |||
255 | if (!len) |
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256 | goto nil; |
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257 | |||
258 | if (groupsize == 8) { |
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5078 | serge | 259 | const u64 *ptr8 = buf; |
260 | |||