1 /* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */ 2 /****************************************************************************** 3 * 4 * Name: acmacros.h - C macros for the entire subsystem. 5 * 6 * Copyright (C) 2000 - 2020, Intel Corp. 7 * 8 *****************************************************************************/ 9 10 #ifndef __ACMACROS_H__ 11 #define __ACMACROS_H__ 12 13 /* 14 * Extract data using a pointer. Any more than a byte and we 15 * get into potential alignment issues -- see the STORE macros below. 16 * Use with care. 17 */ 18 #define ACPI_CAST8(ptr) ACPI_CAST_PTR (u8, (ptr)) 19 #define ACPI_CAST16(ptr) ACPI_CAST_PTR (u16, (ptr)) 20 #define ACPI_CAST32(ptr) ACPI_CAST_PTR (u32, (ptr)) 21 #define ACPI_CAST64(ptr) ACPI_CAST_PTR (u64, (ptr)) 22 #define ACPI_GET8(ptr) (*ACPI_CAST8 (ptr)) 23 #define ACPI_GET16(ptr) (*ACPI_CAST16 (ptr)) 24 #define ACPI_GET32(ptr) (*ACPI_CAST32 (ptr)) 25 #define ACPI_GET64(ptr) (*ACPI_CAST64 (ptr)) 26 #define ACPI_SET8(ptr, val) (*ACPI_CAST8 (ptr) = (u8) (val)) 27 #define ACPI_SET16(ptr, val) (*ACPI_CAST16 (ptr) = (u16) (val)) 28 #define ACPI_SET32(ptr, val) (*ACPI_CAST32 (ptr) = (u32) (val)) 29 #define ACPI_SET64(ptr, val) (*ACPI_CAST64 (ptr) = (u64) (val)) 30 31 /* 32 * printf() format helper. This macro is a workaround for the difficulties 33 * with emitting 64-bit integers and 64-bit pointers with the same code 34 * for both 32-bit and 64-bit hosts. 35 */ 36 #define ACPI_FORMAT_UINT64(i) ACPI_HIDWORD(i), ACPI_LODWORD(i) 37 38 /* 39 * Macros for moving data around to/from buffers that are possibly unaligned. 40 * If the hardware supports the transfer of unaligned data, just do the store. 41 * Otherwise, we have to move one byte at a time. 42 */ 43 #ifdef ACPI_BIG_ENDIAN 44 /* 45 * Macros for big-endian machines 46 */ 47 48 /* These macros reverse the bytes during the move, converting little-endian to big endian */ 49 50 /* Big Endian <== Little Endian */ 51 /* Hi...Lo Lo...Hi */ 52 /* 16-bit source, 16/32/64 destination */ 53 54 #define ACPI_MOVE_16_TO_16(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[1];\ 55 (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[0];} 56 57 #define ACPI_MOVE_16_TO_32(d, s) {(*(u32 *)(void *)(d))=0;\ 58 ((u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[1];\ 59 ((u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[0];} 60 61 #define ACPI_MOVE_16_TO_64(d, s) {(*(u64 *)(void *)(d))=0;\ 62 ((u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\ 63 ((u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];} 64 65 /* 32-bit source, 16/32/64 destination */ 66 67 #define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */ 68 69 #define ACPI_MOVE_32_TO_32(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[3];\ 70 (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[2];\ 71 (( u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[1];\ 72 (( u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[0];} 73 74 #define ACPI_MOVE_32_TO_64(d, s) {(*(u64 *)(void *)(d))=0;\ 75 ((u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[3];\ 76 ((u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[2];\ 77 ((u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\ 78 ((u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];} 79 80 /* 64-bit source, 16/32/64 destination */ 81 82 #define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */ 83 84 #define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */ 85 86 #define ACPI_MOVE_64_TO_64(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[7];\ 87 (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[6];\ 88 (( u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[5];\ 89 (( u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[4];\ 90 (( u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[3];\ 91 (( u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[2];\ 92 (( u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\ 93 (( u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];} 94 #else 95 /* 96 * Macros for little-endian machines 97 */ 98 99 #ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED 100 101 /* The hardware supports unaligned transfers, just do the little-endian move */ 102 103 /* 16-bit source, 16/32/64 destination */ 104 105 #define ACPI_MOVE_16_TO_16(d, s) *(u16 *)(void *)(d) = *(u16 *)(void *)(s) 106 #define ACPI_MOVE_16_TO_32(d, s) *(u32 *)(void *)(d) = *(u16 *)(void *)(s) 107 #define ACPI_MOVE_16_TO_64(d, s) *(u64 *)(void *)(d) = *(u16 *)(void *)(s) 108 109 /* 32-bit source, 16/32/64 destination */ 110 111 #define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */ 112 #define ACPI_MOVE_32_TO_32(d, s) *(u32 *)(void *)(d) = *(u32 *)(void *)(s) 113 #define ACPI_MOVE_32_TO_64(d, s) *(u64 *)(void *)(d) = *(u32 *)(void *)(s) 114 115 /* 64-bit source, 16/32/64 destination */ 116 117 #define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */ 118 #define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */ 119 #define ACPI_MOVE_64_TO_64(d, s) *(u64 *)(void *)(d) = *(u64 *)(void *)(s) 120 121 #else 122 /* 123 * The hardware does not support unaligned transfers. We must move the 124 * data one byte at a time. These macros work whether the source or 125 * the destination (or both) is/are unaligned. (Little-endian move) 126 */ 127 128 /* 16-bit source, 16/32/64 destination */ 129 130 #define ACPI_MOVE_16_TO_16(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\ 131 (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];} 132 133 #define ACPI_MOVE_16_TO_32(d, s) {(*(u32 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);} 134 #define ACPI_MOVE_16_TO_64(d, s) {(*(u64 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d, s);} 135 136 /* 32-bit source, 16/32/64 destination */ 137 138 #define ACPI_MOVE_32_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */ 139 140 #define ACPI_MOVE_32_TO_32(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\ 141 (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];\ 142 (( u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[2];\ 143 (( u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[3];} 144 145 #define ACPI_MOVE_32_TO_64(d, s) {(*(u64 *)(void *)(d)) = 0; ACPI_MOVE_32_TO_32(d, s);} 146 147 /* 64-bit source, 16/32/64 destination */ 148 149 #define ACPI_MOVE_64_TO_16(d, s) ACPI_MOVE_16_TO_16(d, s) /* Truncate to 16 */ 150 #define ACPI_MOVE_64_TO_32(d, s) ACPI_MOVE_32_TO_32(d, s) /* Truncate to 32 */ 151 #define ACPI_MOVE_64_TO_64(d, s) {(( u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\ 152 (( u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];\ 153 (( u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[2];\ 154 (( u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[3];\ 155 (( u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[4];\ 156 (( u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[5];\ 157 (( u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[6];\ 158 (( u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[7];} 159 #endif 160 #endif 161 162 /* 163 * Fast power-of-two math macros for non-optimized compilers 164 */ 165 #define _ACPI_DIV(value, power_of2) ((u32) ((value) >> (power_of2))) 166 #define _ACPI_MUL(value, power_of2) ((u32) ((value) << (power_of2))) 167 #define _ACPI_MOD(value, divisor) ((u32) ((value) & ((divisor) -1))) 168 169 #define ACPI_DIV_2(a) _ACPI_DIV(a, 1) 170 #define ACPI_MUL_2(a) _ACPI_MUL(a, 1) 171 #define ACPI_MOD_2(a) _ACPI_MOD(a, 2) 172 173 #define ACPI_DIV_4(a) _ACPI_DIV(a, 2) 174 #define ACPI_MUL_4(a) _ACPI_MUL(a, 2) 175 #define ACPI_MOD_4(a) _ACPI_MOD(a, 4) 176 177 #define ACPI_DIV_8(a) _ACPI_DIV(a, 3) 178 #define ACPI_MUL_8(a) _ACPI_MUL(a, 3) 179 #define ACPI_MOD_8(a) _ACPI_MOD(a, 8) 180 181 #define ACPI_DIV_16(a) _ACPI_DIV(a, 4) 182 #define ACPI_MUL_16(a) _ACPI_MUL(a, 4) 183 #define ACPI_MOD_16(a) _ACPI_MOD(a, 16) 184 185 #define ACPI_DIV_32(a) _ACPI_DIV(a, 5) 186 #define ACPI_MUL_32(a) _ACPI_MUL(a, 5) 187 #define ACPI_MOD_32(a) _ACPI_MOD(a, 32) 188 189 /* Test for ASCII character */ 190 191 #define ACPI_IS_ASCII(c) ((c) < 0x80) 192 193 /* Signed integers */ 194 195 #define ACPI_SIGN_POSITIVE 0 196 #define ACPI_SIGN_NEGATIVE 1 197 198 /* 199 * Rounding macros (Power of two boundaries only) 200 */ 201 #define ACPI_ROUND_DOWN(value, boundary) (((acpi_size)(value)) & \ 202 (~(((acpi_size) boundary)-1))) 203 204 #define ACPI_ROUND_UP(value, boundary) ((((acpi_size)(value)) + \ 205 (((acpi_size) boundary)-1)) & \ 206 (~(((acpi_size) boundary)-1))) 207 208 /* Note: sizeof(acpi_size) evaluates to either 4 or 8 (32- vs 64-bit mode) */ 209 210 #define ACPI_ROUND_DOWN_TO_32BIT(a) ACPI_ROUND_DOWN(a, 4) 211 #define ACPI_ROUND_DOWN_TO_64BIT(a) ACPI_ROUND_DOWN(a, 8) 212 #define ACPI_ROUND_DOWN_TO_NATIVE_WORD(a) ACPI_ROUND_DOWN(a, sizeof(acpi_size)) 213 214 #define ACPI_ROUND_UP_TO_32BIT(a) ACPI_ROUND_UP(a, 4) 215 #define ACPI_ROUND_UP_TO_64BIT(a) ACPI_ROUND_UP(a, 8) 216 #define ACPI_ROUND_UP_TO_NATIVE_WORD(a) ACPI_ROUND_UP(a, sizeof(acpi_size)) 217 218 #define ACPI_ROUND_BITS_UP_TO_BYTES(a) ACPI_DIV_8((a) + 7) 219 #define ACPI_ROUND_BITS_DOWN_TO_BYTES(a) ACPI_DIV_8((a)) 220 221 #define ACPI_ROUND_UP_TO_1K(a) (((a) + 1023) >> 10) 222 223 /* Generic (non-power-of-two) rounding */ 224 225 #define ACPI_ROUND_UP_TO(value, boundary) (((value) + ((boundary)-1)) / (boundary)) 226 227 #define ACPI_IS_MISALIGNED(value) (((acpi_size) value) & (sizeof(acpi_size)-1)) 228 229 /* Generic bit manipulation */ 230 231 #ifndef ACPI_USE_NATIVE_BIT_FINDER 232 233 #define __ACPI_FIND_LAST_BIT_2(a, r) ((((u8) (a)) & 0x02) ? (r)+1 : (r)) 234 #define __ACPI_FIND_LAST_BIT_4(a, r) ((((u8) (a)) & 0x0C) ? \ 235 __ACPI_FIND_LAST_BIT_2 ((a)>>2, (r)+2) : \ 236 __ACPI_FIND_LAST_BIT_2 ((a), (r))) 237 #define __ACPI_FIND_LAST_BIT_8(a, r) ((((u8) (a)) & 0xF0) ? \ 238 __ACPI_FIND_LAST_BIT_4 ((a)>>4, (r)+4) : \ 239 __ACPI_FIND_LAST_BIT_4 ((a), (r))) 240 #define __ACPI_FIND_LAST_BIT_16(a, r) ((((u16) (a)) & 0xFF00) ? \ 241 __ACPI_FIND_LAST_BIT_8 ((a)>>8, (r)+8) : \ 242 __ACPI_FIND_LAST_BIT_8 ((a), (r))) 243 #define __ACPI_FIND_LAST_BIT_32(a, r) ((((u32) (a)) & 0xFFFF0000) ? \ 244 __ACPI_FIND_LAST_BIT_16 ((a)>>16, (r)+16) : \ 245 __ACPI_FIND_LAST_BIT_16 ((a), (r))) 246 #define __ACPI_FIND_LAST_BIT_64(a, r) ((((u64) (a)) & 0xFFFFFFFF00000000) ? \ 247 __ACPI_FIND_LAST_BIT_32 ((a)>>32, (r)+32) : \ 248 __ACPI_FIND_LAST_BIT_32 ((a), (r))) 249 250 #define ACPI_FIND_LAST_BIT_8(a) ((a) ? __ACPI_FIND_LAST_BIT_8 (a, 1) : 0) 251 #define ACPI_FIND_LAST_BIT_16(a) ((a) ? __ACPI_FIND_LAST_BIT_16 (a, 1) : 0) 252 #define ACPI_FIND_LAST_BIT_32(a) ((a) ? __ACPI_FIND_LAST_BIT_32 (a, 1) : 0) 253 #define ACPI_FIND_LAST_BIT_64(a) ((a) ? __ACPI_FIND_LAST_BIT_64 (a, 1) : 0) 254 255 #define __ACPI_FIND_FIRST_BIT_2(a, r) ((((u8) (a)) & 0x01) ? (r) : (r)+1) 256 #define __ACPI_FIND_FIRST_BIT_4(a, r) ((((u8) (a)) & 0x03) ? \ 257 __ACPI_FIND_FIRST_BIT_2 ((a), (r)) : \ 258 __ACPI_FIND_FIRST_BIT_2 ((a)>>2, (r)+2)) 259 #define __ACPI_FIND_FIRST_BIT_8(a, r) ((((u8) (a)) & 0x0F) ? \ 260 __ACPI_FIND_FIRST_BIT_4 ((a), (r)) : \ 261 __ACPI_FIND_FIRST_BIT_4 ((a)>>4, (r)+4)) 262 #define __ACPI_FIND_FIRST_BIT_16(a, r) ((((u16) (a)) & 0x00FF) ? \ 263 __ACPI_FIND_FIRST_BIT_8 ((a), (r)) : \ 264 __ACPI_FIND_FIRST_BIT_8 ((a)>>8, (r)+8)) 265 #define __ACPI_FIND_FIRST_BIT_32(a, r) ((((u32) (a)) & 0x0000FFFF) ? \ 266 __ACPI_FIND_FIRST_BIT_16 ((a), (r)) : \ 267 __ACPI_FIND_FIRST_BIT_16 ((a)>>16, (r)+16)) 268 #define __ACPI_FIND_FIRST_BIT_64(a, r) ((((u64) (a)) & 0x00000000FFFFFFFF) ? \ 269 __ACPI_FIND_FIRST_BIT_32 ((a), (r)) : \ 270 __ACPI_FIND_FIRST_BIT_32 ((a)>>32, (r)+32)) 271 272 #define ACPI_FIND_FIRST_BIT_8(a) ((a) ? __ACPI_FIND_FIRST_BIT_8 (a, 1) : 0) 273 #define ACPI_FIND_FIRST_BIT_16(a) ((a) ? __ACPI_FIND_FIRST_BIT_16 (a, 1) : 0) 274 #define ACPI_FIND_FIRST_BIT_32(a) ((a) ? __ACPI_FIND_FIRST_BIT_32 (a, 1) : 0) 275 #define ACPI_FIND_FIRST_BIT_64(a) ((a) ? __ACPI_FIND_FIRST_BIT_64 (a, 1) : 0) 276 277 #endif /* ACPI_USE_NATIVE_BIT_FINDER */ 278 279 /* Generic (power-of-two) rounding */ 280 281 #define ACPI_ROUND_UP_POWER_OF_TWO_8(a) ((u8) \ 282 (((u16) 1) << ACPI_FIND_LAST_BIT_8 ((a) - 1))) 283 #define ACPI_ROUND_DOWN_POWER_OF_TWO_8(a) ((u8) \ 284 (((u16) 1) << (ACPI_FIND_LAST_BIT_8 ((a)) - 1))) 285 #define ACPI_ROUND_UP_POWER_OF_TWO_16(a) ((u16) \ 286 (((u32) 1) << ACPI_FIND_LAST_BIT_16 ((a) - 1))) 287 #define ACPI_ROUND_DOWN_POWER_OF_TWO_16(a) ((u16) \ 288 (((u32) 1) << (ACPI_FIND_LAST_BIT_16 ((a)) - 1))) 289 #define ACPI_ROUND_UP_POWER_OF_TWO_32(a) ((u32) \ 290 (((u64) 1) << ACPI_FIND_LAST_BIT_32 ((a) - 1))) 291 #define ACPI_ROUND_DOWN_POWER_OF_TWO_32(a) ((u32) \ 292 (((u64) 1) << (ACPI_FIND_LAST_BIT_32 ((a)) - 1))) 293 #define ACPI_IS_ALIGNED(a, s) (((a) & ((s) - 1)) == 0) 294 #define ACPI_IS_POWER_OF_TWO(a) ACPI_IS_ALIGNED(a, a) 295 296 /* 297 * Bitmask creation 298 * Bit positions start at zero. 299 * MASK_BITS_ABOVE creates a mask starting AT the position and above 300 * MASK_BITS_BELOW creates a mask starting one bit BELOW the position 301 * MASK_BITS_ABOVE/BELOW accepts a bit offset to create a mask 302 * MASK_BITS_ABOVE/BELOW_32/64 accepts a bit width to create a mask 303 * Note: The ACPI_INTEGER_BIT_SIZE check is used to bypass compiler 304 * differences with the shift operator 305 */ 306 #define ACPI_MASK_BITS_ABOVE(position) (~((ACPI_UINT64_MAX) << ((u32) (position)))) 307 #define ACPI_MASK_BITS_BELOW(position) ((ACPI_UINT64_MAX) << ((u32) (position))) 308 #define ACPI_MASK_BITS_ABOVE_32(width) ((u32) ACPI_MASK_BITS_ABOVE(width)) 309 #define ACPI_MASK_BITS_BELOW_32(width) ((u32) ACPI_MASK_BITS_BELOW(width)) 310 #define ACPI_MASK_BITS_ABOVE_64(width) ((width) == ACPI_INTEGER_BIT_SIZE ? \ 311 ACPI_UINT64_MAX : \ 312 ACPI_MASK_BITS_ABOVE(width)) 313 #define ACPI_MASK_BITS_BELOW_64(width) ((width) == ACPI_INTEGER_BIT_SIZE ? \ 314 (u64) 0 : \ 315 ACPI_MASK_BITS_BELOW(width)) 316 317 /* Bitfields within ACPI registers */ 318 319 #define ACPI_REGISTER_PREPARE_BITS(val, pos, mask) \ 320 ((val << pos) & mask) 321 322 #define ACPI_REGISTER_INSERT_VALUE(reg, pos, mask, val) \ 323 reg = (reg & (~(mask))) | ACPI_REGISTER_PREPARE_BITS(val, pos, mask) 324 325 #define ACPI_INSERT_BITS(target, mask, source) \ 326 target = ((target & (~(mask))) | (source & mask)) 327 328 /* Generic bitfield macros and masks */ 329 330 #define ACPI_GET_BITS(source_ptr, position, mask) \ 331 ((*(source_ptr) >> (position)) & (mask)) 332 333 #define ACPI_SET_BITS(target_ptr, position, mask, value) \ 334 (*(target_ptr) |= (((value) & (mask)) << (position))) 335 336 #define ACPI_1BIT_MASK 0x00000001 337 #define ACPI_2BIT_MASK 0x00000003 338 #define ACPI_3BIT_MASK 0x00000007 339 #define ACPI_4BIT_MASK 0x0000000F 340 #define ACPI_5BIT_MASK 0x0000001F 341 #define ACPI_6BIT_MASK 0x0000003F 342 #define ACPI_7BIT_MASK 0x0000007F 343 #define ACPI_8BIT_MASK 0x000000FF 344 #define ACPI_16BIT_MASK 0x0000FFFF 345 #define ACPI_24BIT_MASK 0x00FFFFFF 346 347 /* Macros to extract flag bits from position zero */ 348 349 #define ACPI_GET_1BIT_FLAG(value) ((value) & ACPI_1BIT_MASK) 350 #define ACPI_GET_2BIT_FLAG(value) ((value) & ACPI_2BIT_MASK) 351 #define ACPI_GET_3BIT_FLAG(value) ((value) & ACPI_3BIT_MASK) 352 #define ACPI_GET_4BIT_FLAG(value) ((value) & ACPI_4BIT_MASK) 353 354 /* Macros to extract flag bits from position one and above */ 355 356 #define ACPI_EXTRACT_1BIT_FLAG(field, position) (ACPI_GET_1BIT_FLAG ((field) >> position)) 357 #define ACPI_EXTRACT_2BIT_FLAG(field, position) (ACPI_GET_2BIT_FLAG ((field) >> position)) 358 #define ACPI_EXTRACT_3BIT_FLAG(field, position) (ACPI_GET_3BIT_FLAG ((field) >> position)) 359 #define ACPI_EXTRACT_4BIT_FLAG(field, position) (ACPI_GET_4BIT_FLAG ((field) >> position)) 360 361 /* ACPI Pathname helpers */ 362 363 #define ACPI_IS_ROOT_PREFIX(c) ((c) == (u8) 0x5C) /* Backslash */ 364 #define ACPI_IS_PARENT_PREFIX(c) ((c) == (u8) 0x5E) /* Carat */ 365 #define ACPI_IS_PATH_SEPARATOR(c) ((c) == (u8) 0x2E) /* Period (dot) */ 366 367 /* 368 * An object of type struct acpi_namespace_node can appear in some contexts 369 * where a pointer to an object of type union acpi_operand_object can also 370 * appear. This macro is used to distinguish them. 371 * 372 * The "DescriptorType" field is the second field in both structures. 373 */ 374 #define ACPI_GET_DESCRIPTOR_PTR(d) (((union acpi_descriptor *)(void *)(d))->common.common_pointer) 375 #define ACPI_SET_DESCRIPTOR_PTR(d, p) (((union acpi_descriptor *)(void *)(d))->common.common_pointer = (p)) 376 #define ACPI_GET_DESCRIPTOR_TYPE(d) (((union acpi_descriptor *)(void *)(d))->common.descriptor_type) 377 #define ACPI_SET_DESCRIPTOR_TYPE(d, t) (((union acpi_descriptor *)(void *)(d))->common.descriptor_type = (t)) 378 379 /* 380 * Macros for the master AML opcode table 381 */ 382 #if defined (ACPI_DISASSEMBLER) || defined (ACPI_DEBUG_OUTPUT) 383 #define ACPI_OP(name, Pargs, Iargs, obj_type, class, type, flags) \ 384 {name, (u32)(Pargs), (u32)(Iargs), (u32)(flags), obj_type, class, type} 385 #else 386 #define ACPI_OP(name, Pargs, Iargs, obj_type, class, type, flags) \ 387 {(u32)(Pargs), (u32)(Iargs), (u32)(flags), obj_type, class, type} 388 #endif 389 390 #define ARG_TYPE_WIDTH 5 391 #define ARG_1(x) ((u32)(x)) 392 #define ARG_2(x) ((u32)(x) << (1 * ARG_TYPE_WIDTH)) 393 #define ARG_3(x) ((u32)(x) << (2 * ARG_TYPE_WIDTH)) 394 #define ARG_4(x) ((u32)(x) << (3 * ARG_TYPE_WIDTH)) 395 #define ARG_5(x) ((u32)(x) << (4 * ARG_TYPE_WIDTH)) 396 #define ARG_6(x) ((u32)(x) << (5 * ARG_TYPE_WIDTH)) 397 398 #define ARGI_LIST1(a) (ARG_1(a)) 399 #define ARGI_LIST2(a, b) (ARG_1(b)|ARG_2(a)) 400 #define ARGI_LIST3(a, b, c) (ARG_1(c)|ARG_2(b)|ARG_3(a)) 401 #define ARGI_LIST4(a, b, c, d) (ARG_1(d)|ARG_2(c)|ARG_3(b)|ARG_4(a)) 402 #define ARGI_LIST5(a, b, c, d, e) (ARG_1(e)|ARG_2(d)|ARG_3(c)|ARG_4(b)|ARG_5(a)) 403 #define ARGI_LIST6(a, b, c, d, e, f) (ARG_1(f)|ARG_2(e)|ARG_3(d)|ARG_4(c)|ARG_5(b)|ARG_6(a)) 404 405 #define ARGP_LIST1(a) (ARG_1(a)) 406 #define ARGP_LIST2(a, b) (ARG_1(a)|ARG_2(b)) 407 #define ARGP_LIST3(a, b, c) (ARG_1(a)|ARG_2(b)|ARG_3(c)) 408 #define ARGP_LIST4(a, b, c, d) (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d)) 409 #define ARGP_LIST5(a, b, c, d, e) (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d)|ARG_5(e)) 410 #define ARGP_LIST6(a, b, c, d, e, f) (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d)|ARG_5(e)|ARG_6(f)) 411 412 #define GET_CURRENT_ARG_TYPE(list) (list & ((u32) 0x1F)) 413 #define INCREMENT_ARG_LIST(list) (list >>= ((u32) ARG_TYPE_WIDTH)) 414 415 /* 416 * Ascii error messages can be configured out 417 */ 418 #ifndef ACPI_NO_ERROR_MESSAGES 419 /* 420 * Error reporting. The callers module and line number are inserted by AE_INFO, 421 * the plist contains a set of parens to allow variable-length lists. 422 * These macros are used for both the debug and non-debug versions of the code. 423 */ 424 #define ACPI_ERROR_NAMESPACE(s, p, e) acpi_ut_prefixed_namespace_error (AE_INFO, s, p, e); 425 #define ACPI_ERROR_METHOD(s, n, p, e) acpi_ut_method_error (AE_INFO, s, n, p, e); 426 #define ACPI_WARN_PREDEFINED(plist) acpi_ut_predefined_warning plist 427 #define ACPI_INFO_PREDEFINED(plist) acpi_ut_predefined_info plist 428 #define ACPI_BIOS_ERROR_PREDEFINED(plist) acpi_ut_predefined_bios_error plist 429 #define ACPI_ERROR_ONLY(s) s 430 431 #else 432 433 /* No error messages */ 434 435 #define ACPI_ERROR_NAMESPACE(s, p, e) 436 #define ACPI_ERROR_METHOD(s, n, p, e) 437 #define ACPI_WARN_PREDEFINED(plist) 438 #define ACPI_INFO_PREDEFINED(plist) 439 #define ACPI_BIOS_ERROR_PREDEFINED(plist) 440 #define ACPI_ERROR_ONLY(s) 441 442 #endif /* ACPI_NO_ERROR_MESSAGES */ 443 444 #if (!ACPI_REDUCED_HARDWARE) 445 #define ACPI_HW_OPTIONAL_FUNCTION(addr) addr 446 #else 447 #define ACPI_HW_OPTIONAL_FUNCTION(addr) NULL 448 #endif 449 450 /* 451 * Macros used for ACPICA utilities only 452 */ 453 454 /* Generate a UUID */ 455 456 #define ACPI_INIT_UUID(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ 457 (a) & 0xFF, ((a) >> 8) & 0xFF, ((a) >> 16) & 0xFF, ((a) >> 24) & 0xFF, \ 458 (b) & 0xFF, ((b) >> 8) & 0xFF, \ 459 (c) & 0xFF, ((c) >> 8) & 0xFF, \ 460 (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7) 461 462 #define ACPI_IS_OCTAL_DIGIT(d) (((char)(d) >= '0') && ((char)(d) <= '7')) 463 464 /* 465 * Macros used for the ASL-/ASL+ converter utility 466 */ 467 #ifdef ACPI_ASL_COMPILER 468 469 #define ASL_CV_LABEL_FILENODE(a) cv_label_file_node(a); 470 #define ASL_CV_CAPTURE_COMMENTS_ONLY(a) cv_capture_comments_only (a); 471 #define ASL_CV_CAPTURE_COMMENTS(a) cv_capture_comments (a); 472 #define ASL_CV_TRANSFER_COMMENTS(a) cv_transfer_comments (a); 473 #define ASL_CV_CLOSE_PAREN(a,b) cv_close_paren_write_comment(a,b); 474 #define ASL_CV_CLOSE_BRACE(a,b) cv_close_brace_write_comment(a,b); 475 #define ASL_CV_SWITCH_FILES(a,b) cv_switch_files(a,b); 476 #define ASL_CV_CLEAR_OP_COMMENTS(a) cv_clear_op_comments(a); 477 #define ASL_CV_PRINT_ONE_COMMENT(a,b,c,d) cv_print_one_comment_type (a,b,c,d); 478 #define ASL_CV_PRINT_ONE_COMMENT_LIST(a,b) cv_print_one_comment_list (a,b); 479 #define ASL_CV_FILE_HAS_SWITCHED(a) cv_file_has_switched(a) 480 #define ASL_CV_INIT_FILETREE(a,b) cv_init_file_tree(a,b); 481 482 #else 483 484 #define ASL_CV_LABEL_FILENODE(a) 485 #define ASL_CV_CAPTURE_COMMENTS_ONLY(a) 486 #define ASL_CV_CAPTURE_COMMENTS(a) 487 #define ASL_CV_TRANSFER_COMMENTS(a) 488 #define ASL_CV_CLOSE_PAREN(a,b) acpi_os_printf (")"); 489 #define ASL_CV_CLOSE_BRACE(a,b) acpi_os_printf ("}"); 490 #define ASL_CV_SWITCH_FILES(a,b) 491 #define ASL_CV_CLEAR_OP_COMMENTS(a) 492 #define ASL_CV_PRINT_ONE_COMMENT(a,b,c,d) 493 #define ASL_CV_PRINT_ONE_COMMENT_LIST(a,b) 494 #define ASL_CV_FILE_HAS_SWITCHED(a) 0 495 #define ASL_CV_INIT_FILETREE(a,b) 496 497 #endif 498 499 #endif /* ACMACROS_H */ 500