include/acpi/acmacros.h

   1 /******************************************************************************
   2  *
   3  * Name: acmacros.h - C macros for the entire subsystem.
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2005, R. Byron Moore
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions, and the following disclaimer,
  16  *    without modification.
  17  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  18  *    substantially similar to the "NO WARRANTY" disclaimer below
  19  *    ("Disclaimer") and any redistribution must be conditioned upon
  20  *    including a substantially similar Disclaimer requirement for further
  21  *    binary redistribution.
  22  * 3. Neither the names of the above-listed copyright holders nor the names
  23  *    of any contributors may be used to endorse or promote products derived
  24  *    from this software without specific prior written permission.
  25  *
  26  * Alternatively, this software may be distributed under the terms of the
  27  * GNU General Public License ("GPL") version 2 as published by the Free
  28  * Software Foundation.
  29  *
  30  * NO WARRANTY
  31  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  32  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  33  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  34  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  35  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  36  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  37  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  40  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  41  * POSSIBILITY OF SUCH DAMAGES.
  42  */
  43
  44 #ifndef __ACMACROS_H__
  45 #define __ACMACROS_H__
  46
  47 /*
  48  * Data manipulation macros
  49  */
  50 #define ACPI_LOWORD(l)                  ((u16)(u32)(l))
  51 #define ACPI_HIWORD(l)                  ((u16)((((u32)(l)) >> 16) & 0xFFFF))
  52 #define ACPI_LOBYTE(l)                  ((u8)(u16)(l))
  53 #define ACPI_HIBYTE(l)                  ((u8)((((u16)(l)) >> 8) & 0xFF))
  54
  55 #define ACPI_SET_BIT(target,bit)        ((target) |= (bit))
  56 #define ACPI_CLEAR_BIT(target,bit)      ((target) &= ~(bit))
  57 #define ACPI_MIN(a,b)                   (((a)<(b))?(a):(b))
  58
  59 #if ACPI_MACHINE_WIDTH == 16
  60
  61 /*
  62  * For 16-bit addresses, we have to assume that the upper 32 bits
  63  * are zero.
  64  */
  65 #define ACPI_LODWORD(l)                 ((u32)(l))
  66 #define ACPI_HIDWORD(l)                 ((u32)(0))
  67
  68 #define ACPI_GET_ADDRESS(a)             ((a).lo)
  69 #define ACPI_STORE_ADDRESS(a,b)         {(a).hi=0;(a).lo=(u32)(b);}
  70 #define ACPI_VALID_ADDRESS(a)           ((a).hi | (a).lo)
  71
  72 #else
  73 #ifdef ACPI_NO_INTEGER64_SUPPORT
  74 /*
  75  * acpi_integer is 32-bits, no 64-bit support on this platform
  76  */
  77 #define ACPI_LODWORD(l)                 ((u32)(l))
  78 #define ACPI_HIDWORD(l)                 ((u32)(0))
  79
  80 #define ACPI_GET_ADDRESS(a)             (a)
  81 #define ACPI_STORE_ADDRESS(a,b)         ((a)=(b))
  82 #define ACPI_VALID_ADDRESS(a)           (a)
  83
  84 #else
  85
  86 /*
  87  * Full 64-bit address/integer on both 32-bit and 64-bit platforms
  88  */
  89 #define ACPI_LODWORD(l)                 ((u32)(u64)(l))
  90 #define ACPI_HIDWORD(l)                 ((u32)(((*(struct uint64_struct *)(void *)(&l))).hi))
  91
  92 #define ACPI_GET_ADDRESS(a)             (a)
  93 #define ACPI_STORE_ADDRESS(a,b)         ((a)=(acpi_physical_address)(b))
  94 #define ACPI_VALID_ADDRESS(a)           (a)
  95 #endif
  96 #endif
  97
  98 /*
  99  * printf() format helpers
 100  */
 101
 102 /* Split 64-bit integer into two 32-bit values. Use with %8.8X%8.8X */
 103
 104 #define ACPI_FORMAT_UINT64(i)           ACPI_HIDWORD(i),ACPI_LODWORD(i)
 105
 106 /*
 107  * Extract a byte of data using a pointer.  Any more than a byte and we
 108  * get into potential aligment issues -- see the STORE macros below
 109  */
 110 #define ACPI_GET8(ptr)                  *ACPI_CAST_PTR (u8, ptr)
 111 #define ACPI_GET16(ptr)                 *ACPI_CAST_PTR (u16, ptr)
 112 #define ACPI_GET32(ptr)                 *ACPI_CAST_PTR (u32, ptr)
 113 #define ACPI_GET64(ptr)                 *ACPI_CAST_PTR (u64, ptr)
 114 #define ACPI_SET8(ptr)                  *ACPI_CAST_PTR (u8, ptr)
 115 #define ACPI_SET16(ptr)                 *ACPI_CAST_PTR (u16, ptr)
 116 #define ACPI_SET32(ptr)                 *ACPI_CAST_PTR (u32, ptr)
 117 #define ACPI_SET64(ptr)                 *ACPI_CAST_PTR (u64, ptr)
 118
 119 /* Pointer manipulation */
 120
 121 #define ACPI_CAST_PTR(t, p)             ((t *)(void *)(p))
 122 #define ACPI_CAST_INDIRECT_PTR(t, p)    ((t **)(void *)(p))
 123 #define ACPI_ADD_PTR(t,a,b)             ACPI_CAST_PTR (t, (ACPI_CAST_PTR (u8, (a)) + (acpi_native_uint)(b)))
 124 #define ACPI_PTR_DIFF(a,b)              (acpi_native_uint) ((char *)(a) - (char *)(b))
 125
 126 /* Pointer/Integer type conversions */
 127
 128 #define ACPI_TO_POINTER(i)              ACPI_ADD_PTR (void, (void *) NULL,(acpi_native_uint)i)
 129 #define ACPI_TO_INTEGER(p)              ACPI_PTR_DIFF (p,(void *) NULL)
 130 #define ACPI_OFFSET(d,f)                (acpi_size) ACPI_PTR_DIFF (&(((d *)0)->f),(void *) NULL)
 131 #define ACPI_FADT_OFFSET(f)             ACPI_OFFSET (FADT_DESCRIPTOR, f)
 132
 133 #if ACPI_MACHINE_WIDTH == 16
 134 #define ACPI_STORE_POINTER(d,s)         ACPI_MOVE_32_TO_32(d,s)
 135 #define ACPI_PHYSADDR_TO_PTR(i)         (void *)(i)
 136 #define ACPI_PTR_TO_PHYSADDR(i)         (u32) (char *)(i)
 137 #else
 138 #define ACPI_PHYSADDR_TO_PTR(i)         ACPI_TO_POINTER(i)
 139 #define ACPI_PTR_TO_PHYSADDR(i)         ACPI_TO_INTEGER(i)
 140 #endif
 141
 142 /*
 143  * Macros for moving data around to/from buffers that are possibly unaligned.
 144  * If the hardware supports the transfer of unaligned data, just do the store.
 145  * Otherwise, we have to move one byte at a time.
 146  */
 147 #ifdef ACPI_BIG_ENDIAN
 148 /*
 149  * Macros for big-endian machines
 150  */
 151
 152 /* This macro sets a buffer index, starting from the end of the buffer */
 153
 154 #define ACPI_BUFFER_INDEX(buf_len,buf_offset,byte_gran) ((buf_len) - (((buf_offset)+1) * (byte_gran)))
 155
 156 /* These macros reverse the bytes during the move, converting little-endian to big endian */
 157
 158          /* Big Endian      <==        Little Endian */
 159          /*  Hi...Lo                     Lo...Hi     */
 160 /* 16-bit source, 16/32/64 destination */
 161
 162 #define ACPI_MOVE_16_TO_16(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[1];\
 163                           ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[0];}
 164
 165 #define ACPI_MOVE_16_TO_32(d,s)         {(*(u32 *)(void *)(d))=0;\
 166                                           ((u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[1];\
 167                                           ((u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[0];}
 168
 169 #define ACPI_MOVE_16_TO_64(d,s)         {(*(u64 *)(void *)(d))=0;\
 170                                                            ((u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\
 171                                                            ((u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];}
 172
 173 /* 32-bit source, 16/32/64 destination */
 174
 175 #define ACPI_MOVE_32_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
 176
 177 #define ACPI_MOVE_32_TO_32(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[3];\
 178                                                                           ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[2];\
 179                                                                           ((  u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[1];\
 180                                                                           ((  u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[0];}
 181
 182 #define ACPI_MOVE_32_TO_64(d,s)         {(*(u64 *)(void *)(d))=0;\
 183                                                                                    ((u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[3];\
 184                                                                                    ((u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[2];\
 185                                                                                    ((u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\
 186                                                                                    ((u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];}
 187
 188 /* 64-bit source, 16/32/64 destination */
 189
 190 #define ACPI_MOVE_64_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
 191
 192 #define ACPI_MOVE_64_TO_32(d,s)         ACPI_MOVE_32_TO_32(d,s) /* Truncate to 32 */
 193
 194 #define ACPI_MOVE_64_TO_64(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[7];\
 195                                                                                  ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[6];\
 196                                                                                  ((  u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[5];\
 197                                                                                  ((  u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[4];\
 198                                                                                  ((  u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[3];\
 199                                                                                  ((  u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[2];\
 200                                                                                  ((  u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\
 201                                                                                  ((  u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];}
 202 #else
 203 /*
 204  * Macros for little-endian machines
 205  */
 206
 207 /* This macro sets a buffer index, starting from the beginning of the buffer */
 208
 209 #define ACPI_BUFFER_INDEX(buf_len,buf_offset,byte_gran) (buf_offset)
 210
 211 #ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED
 212
 213 /* The hardware supports unaligned transfers, just do the little-endian move */
 214
 215 #if ACPI_MACHINE_WIDTH == 16
 216
 217 /* No 64-bit integers */
 218 /* 16-bit source, 16/32/64 destination */
 219
 220 #define ACPI_MOVE_16_TO_16(d,s)         *(u16 *)(void *)(d) = *(u16 *)(void *)(s)
 221 #define ACPI_MOVE_16_TO_32(d,s)         *(u32 *)(void *)(d) = *(u16 *)(void *)(s)
 222 #define ACPI_MOVE_16_TO_64(d,s)         ACPI_MOVE_16_TO_32(d,s)
 223
 224 /* 32-bit source, 16/32/64 destination */
 225
 226 #define ACPI_MOVE_32_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
 227 #define ACPI_MOVE_32_TO_32(d,s)         *(u32 *)(void *)(d) = *(u32 *)(void *)(s)
 228 #define ACPI_MOVE_32_TO_64(d,s)         ACPI_MOVE_32_TO_32(d,s)
 229
 230 /* 64-bit source, 16/32/64 destination */
 231
 232 #define ACPI_MOVE_64_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
 233 #define ACPI_MOVE_64_TO_32(d,s)         ACPI_MOVE_32_TO_32(d,s) /* Truncate to 32 */
 234 #define ACPI_MOVE_64_TO_64(d,s)         ACPI_MOVE_32_TO_32(d,s)
 235
 236 #else
 237 /* 16-bit source, 16/32/64 destination */
 238
 239 #define ACPI_MOVE_16_TO_16(d,s)         *(u16 *)(void *)(d) = *(u16 *)(void *)(s)
 240 #define ACPI_MOVE_16_TO_32(d,s)         *(u32 *)(void *)(d) = *(u16 *)(void *)(s)
 241 #define ACPI_MOVE_16_TO_64(d,s)         *(u64 *)(void *)(d) = *(u16 *)(void *)(s)
 242
 243 /* 32-bit source, 16/32/64 destination */
 244
 245 #define ACPI_MOVE_32_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
 246 #define ACPI_MOVE_32_TO_32(d,s)         *(u32 *)(void *)(d) = *(u32 *)(void *)(s)
 247 #define ACPI_MOVE_32_TO_64(d,s)         *(u64 *)(void *)(d) = *(u32 *)(void *)(s)
 248
 249 /* 64-bit source, 16/32/64 destination */
 250
 251 #define ACPI_MOVE_64_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
 252 #define ACPI_MOVE_64_TO_32(d,s)         ACPI_MOVE_32_TO_32(d,s) /* Truncate to 32 */
 253 #define ACPI_MOVE_64_TO_64(d,s)         *(u64 *)(void *)(d) = *(u64 *)(void *)(s)
 254 #endif
 255
 256 #else
 257 /*
 258  * The hardware does not support unaligned transfers.  We must move the
 259  * data one byte at a time.  These macros work whether the source or
 260  * the destination (or both) is/are unaligned.  (Little-endian move)
 261  */
 262
 263 /* 16-bit source, 16/32/64 destination */
 264
 265 #define ACPI_MOVE_16_TO_16(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
 266                                                                                  ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];}
 267
 268 #define ACPI_MOVE_16_TO_32(d,s)         {(*(u32 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d,s);}
 269 #define ACPI_MOVE_16_TO_64(d,s)         {(*(u64 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d,s);}
 270
 271 /* 32-bit source, 16/32/64 destination */
 272
 273 #define ACPI_MOVE_32_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
 274
 275 #define ACPI_MOVE_32_TO_32(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
 276                                                                                  ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];\
 277                                                                                  ((  u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[2];\
 278                                                                                  ((  u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[3];}
 279
 280 #define ACPI_MOVE_32_TO_64(d,s)         {(*(u64 *)(void *)(d)) = 0; ACPI_MOVE_32_TO_32(d,s);}
 281
 282 /* 64-bit source, 16/32/64 destination */
 283
 284 #define ACPI_MOVE_64_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
 285 #define ACPI_MOVE_64_TO_32(d,s)         ACPI_MOVE_32_TO_32(d,s) /* Truncate to 32 */
 286 #define ACPI_MOVE_64_TO_64(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
 287                                                                                  ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];\
 288                                                                                  ((  u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[2];\
 289                                                                                  ((  u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[3];\
 290                                                                                  ((  u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[4];\
 291                                                                                  ((  u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[5];\
 292                                                                                  ((  u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[6];\
 293                                                                                  ((  u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[7];}
 294 #endif
 295 #endif
 296
 297 /* Macros based on machine integer width */
 298
 299 #if ACPI_MACHINE_WIDTH == 16
 300 #define ACPI_MOVE_SIZE_TO_16(d,s)       ACPI_MOVE_16_TO_16(d,s)
 301
 302 #elif ACPI_MACHINE_WIDTH == 32
 303 #define ACPI_MOVE_SIZE_TO_16(d,s)       ACPI_MOVE_32_TO_16(d,s)
 304
 305 #elif ACPI_MACHINE_WIDTH == 64
 306 #define ACPI_MOVE_SIZE_TO_16(d,s)       ACPI_MOVE_64_TO_16(d,s)
 307
 308 #else
 309 #error unknown ACPI_MACHINE_WIDTH
 310 #endif
 311
 312 /*
 313  * Fast power-of-two math macros for non-optimized compilers
 314  */
 315 #define _ACPI_DIV(value,power_of2)      ((u32) ((value) >> (power_of2)))
 316 #define _ACPI_MUL(value,power_of2)      ((u32) ((value) << (power_of2)))
 317 #define _ACPI_MOD(value,divisor)        ((u32) ((value) & ((divisor) -1)))
 318
 319 #define ACPI_DIV_2(a)                   _ACPI_DIV(a,1)
 320 #define ACPI_MUL_2(a)                   _ACPI_MUL(a,1)
 321 #define ACPI_MOD_2(a)                   _ACPI_MOD(a,2)
 322
 323 #define ACPI_DIV_4(a)                   _ACPI_DIV(a,2)
 324 #define ACPI_MUL_4(a)                   _ACPI_MUL(a,2)
 325 #define ACPI_MOD_4(a)                   _ACPI_MOD(a,4)
 326
 327 #define ACPI_DIV_8(a)                   _ACPI_DIV(a,3)
 328 #define ACPI_MUL_8(a)                   _ACPI_MUL(a,3)
 329 #define ACPI_MOD_8(a)                   _ACPI_MOD(a,8)
 330
 331 #define ACPI_DIV_16(a)                  _ACPI_DIV(a,4)
 332 #define ACPI_MUL_16(a)                  _ACPI_MUL(a,4)
 333 #define ACPI_MOD_16(a)                  _ACPI_MOD(a,16)
 334
 335 #define ACPI_DIV_32(a)                  _ACPI_DIV(a,5)
 336 #define ACPI_MUL_32(a)                  _ACPI_MUL(a,5)
 337 #define ACPI_MOD_32(a)                  _ACPI_MOD(a,32)
 338
 339 /*
 340  * Rounding macros (Power of two boundaries only)
 341  */
 342 #define ACPI_ROUND_DOWN(value,boundary)      (((acpi_native_uint)(value)) & (~(((acpi_native_uint) boundary)-1)))
 343 #define ACPI_ROUND_UP(value,boundary)        ((((acpi_native_uint)(value)) + (((acpi_native_uint) boundary)-1)) & (~(((acpi_native_uint) boundary)-1)))
 344
 345 #define ACPI_ROUND_DOWN_TO_32_BITS(a)        ACPI_ROUND_DOWN(a,4)
 346 #define ACPI_ROUND_DOWN_TO_64_BITS(a)        ACPI_ROUND_DOWN(a,8)
 347 #define ACPI_ROUND_DOWN_TO_NATIVE_WORD(a)    ACPI_ROUND_DOWN(a,ALIGNED_ADDRESS_BOUNDARY)
 348
 349 #define ACPI_ROUND_UP_to_32_bITS(a)          ACPI_ROUND_UP(a,4)
 350 #define ACPI_ROUND_UP_to_64_bITS(a)          ACPI_ROUND_UP(a,8)
 351 #define ACPI_ROUND_UP_TO_NATIVE_WORD(a)      ACPI_ROUND_UP(a,ALIGNED_ADDRESS_BOUNDARY)
 352
 353 #define ACPI_ROUND_BITS_UP_TO_BYTES(a)       ACPI_DIV_8((a) + 7)
 354 #define ACPI_ROUND_BITS_DOWN_TO_BYTES(a)     ACPI_DIV_8((a))
 355
 356 #define ACPI_ROUND_UP_TO_1K(a)               (((a) + 1023) >> 10)
 357
 358 /* Generic (non-power-of-two) rounding */
 359
 360 #define ACPI_ROUND_UP_TO(value,boundary)     (((value) + ((boundary)-1)) / (boundary))
 361
 362 /*
 363  * Bitmask creation
 364  * Bit positions start at zero.
 365  * MASK_BITS_ABOVE creates a mask starting AT the position and above
 366  * MASK_BITS_BELOW creates a mask starting one bit BELOW the position
 367  */
 368 #define ACPI_MASK_BITS_ABOVE(position)       (~((ACPI_INTEGER_MAX) << ((u32) (position))))
 369 #define ACPI_MASK_BITS_BELOW(position)       ((ACPI_INTEGER_MAX) << ((u32) (position)))
 370
 371 #define ACPI_IS_OCTAL_DIGIT(d)               (((char)(d) >= '0') && ((char)(d) <= '7'))
 372
 373 /* Bitfields within ACPI registers */
 374
 375 #define ACPI_REGISTER_PREPARE_BITS(val, pos, mask)      ((val << pos) & mask)
 376 #define ACPI_REGISTER_INSERT_VALUE(reg, pos, mask, val)  reg = (reg & (~(mask))) | ACPI_REGISTER_PREPARE_BITS(val, pos, mask)
 377
 378 /* Generate a UUID */
 379
 380 #define ACPI_INIT_UUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7)   (a) & 0xFF, ((a) >> 8) & 0xFF, ((a) >> 16) & 0xFF, ((a) >> 24) & 0xFF, \
 381                                                                                                   (b) & 0xFF, ((b) >> 8) & 0xFF, \
 382                                                                                                   (c) & 0xFF, ((c) >> 8) & 0xFF, \
 383                                                                                                   (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7)
 384
 385 /*
 386  * An struct acpi_namespace_node * can appear in some contexts,
 387  * where a pointer to an union acpi_operand_object    can also
 388  * appear.  This macro is used to distinguish them.
 389  *
 390  * The "Descriptor" field is the first field in both structures.
 391  */
 392 #define ACPI_GET_DESCRIPTOR_TYPE(d)     (((union acpi_descriptor *)(void *)(d))->descriptor_id)
 393 #define ACPI_SET_DESCRIPTOR_TYPE(d,t)   (((union acpi_descriptor *)(void *)(d))->descriptor_id = t)
 394
 395 /* Macro to test the object type */
 396
 397 #define ACPI_GET_OBJECT_TYPE(d)         (((union acpi_operand_object *)(void *)(d))->common.type)
 398
 399 /* Macro to check the table flags for SINGLE or MULTIPLE tables are allowed */
 400
 401 #define ACPI_IS_SINGLE_TABLE(x)         (((x) & 0x01) == ACPI_TABLE_SINGLE ? 1 : 0)
 402
 403 /*
 404  * Macros for the master AML opcode table
 405  */
 406 #if defined(ACPI_DISASSEMBLER) || defined (ACPI_DEBUG_OUTPUT)
 407 #define ACPI_OP(name,Pargs,Iargs,obj_type,class,type,flags)    {name,(u32)(Pargs),(u32)(Iargs),(u32)(flags),obj_type,class,type}
 408 #else
 409 #define ACPI_OP(name,Pargs,Iargs,obj_type,class,type,flags)    {(u32)(Pargs),(u32)(Iargs),(u32)(flags),obj_type,class,type}
 410 #endif
 411
 412 #ifdef ACPI_DISASSEMBLER
 413 #define ACPI_DISASM_ONLY_MEMBERS(a)     a;
 414 #else
 415 #define ACPI_DISASM_ONLY_MEMBERS(a)
 416 #endif
 417
 418 #define ARG_TYPE_WIDTH                  5
 419 #define ARG_1(x)                        ((u32)(x))
 420 #define ARG_2(x)                        ((u32)(x) << (1 * ARG_TYPE_WIDTH))
 421 #define ARG_3(x)                        ((u32)(x) << (2 * ARG_TYPE_WIDTH))
 422 #define ARG_4(x)                        ((u32)(x) << (3 * ARG_TYPE_WIDTH))
 423 #define ARG_5(x)                        ((u32)(x) << (4 * ARG_TYPE_WIDTH))
 424 #define ARG_6(x)                        ((u32)(x) << (5 * ARG_TYPE_WIDTH))
 425
 426 #define ARGI_LIST1(a)                   (ARG_1(a))
 427 #define ARGI_LIST2(a,b)                 (ARG_1(b)|ARG_2(a))
 428 #define ARGI_LIST3(a,b,c)               (ARG_1(c)|ARG_2(b)|ARG_3(a))
 429 #define ARGI_LIST4(a,b,c,d)             (ARG_1(d)|ARG_2(c)|ARG_3(b)|ARG_4(a))
 430 #define ARGI_LIST5(a,b,c,d,e)           (ARG_1(e)|ARG_2(d)|ARG_3(c)|ARG_4(b)|ARG_5(a))
 431 #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))
 432
 433 #define ARGP_LIST1(a)                   (ARG_1(a))
 434 #define ARGP_LIST2(a,b)                 (ARG_1(a)|ARG_2(b))
 435 #define ARGP_LIST3(a,b,c)               (ARG_1(a)|ARG_2(b)|ARG_3(c))
 436 #define ARGP_LIST4(a,b,c,d)             (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d))
 437 #define ARGP_LIST5(a,b,c,d,e)           (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d)|ARG_5(e))
 438 #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))
 439
 440 #define GET_CURRENT_ARG_TYPE(list)      (list & ((u32) 0x1F))
 441 #define INCREMENT_ARG_LIST(list)        (list >>= ((u32) ARG_TYPE_WIDTH))
 442
 443 /*
 444  * Reporting macros that are never compiled out
 445  */
 446 #define ACPI_PARAM_LIST(pl)                 pl
 447
 448 /*
 449  * Error reporting.  These versions add callers module and line#.
 450  *
 451  * Since _acpi_module_name gets compiled out when ACPI_DEBUG_OUTPUT
 452  * isn't defined, only use it in debug mode.
 453  */
 454 #ifdef ACPI_DEBUG_OUTPUT
 455
 456 #define ACPI_REPORT_INFO(fp)                {acpi_ut_report_info(_acpi_module_name,__LINE__,_COMPONENT); \
 457                                                                                                 acpi_os_printf ACPI_PARAM_LIST(fp);}
 458 #define ACPI_REPORT_ERROR(fp)               {acpi_ut_report_error(_acpi_module_name,__LINE__,_COMPONENT); \
 459                                                                                                 acpi_os_printf ACPI_PARAM_LIST(fp);}
 460 #define ACPI_REPORT_WARNING(fp)             {acpi_ut_report_warning(_acpi_module_name,__LINE__,_COMPONENT); \
 461                                                                                                 acpi_os_printf ACPI_PARAM_LIST(fp);}
 462 #define ACPI_REPORT_NSERROR(s,e)            acpi_ns_report_error(_acpi_module_name,__LINE__,_COMPONENT, s, e);
 463
 464 #define ACPI_REPORT_METHOD_ERROR(s,n,p,e)   acpi_ns_report_method_error(_acpi_module_name,__LINE__,_COMPONENT, s, n, p, e);
 465
 466 #else
 467
 468 #define ACPI_REPORT_INFO(fp)                {acpi_ut_report_info("ACPI",__LINE__,_COMPONENT); \
 469                                                                                                 acpi_os_printf ACPI_PARAM_LIST(fp);}
 470 #define ACPI_REPORT_ERROR(fp)               {acpi_ut_report_error("ACPI",__LINE__,_COMPONENT); \
 471                                                                                                 acpi_os_printf ACPI_PARAM_LIST(fp);}
 472 #define ACPI_REPORT_WARNING(fp)             {acpi_ut_report_warning("ACPI",__LINE__,_COMPONENT); \
 473                                                                                                 acpi_os_printf ACPI_PARAM_LIST(fp);}
 474 #define ACPI_REPORT_NSERROR(s,e)            acpi_ns_report_error("ACPI",__LINE__,_COMPONENT, s, e);
 475
 476 #define ACPI_REPORT_METHOD_ERROR(s,n,p,e)   acpi_ns_report_method_error("ACPI",__LINE__,_COMPONENT, s, n, p, e);
 477
 478 #endif
 479
 480 /* Error reporting.  These versions pass thru the module and line# */
 481
 482 #define _ACPI_REPORT_INFO(a,b,c,fp)         {acpi_ut_report_info(a,b,c); \
 483                                                                                                 acpi_os_printf ACPI_PARAM_LIST(fp);}
 484 #define _ACPI_REPORT_ERROR(a,b,c,fp)        {acpi_ut_report_error(a,b,c); \
 485                                                                                                 acpi_os_printf ACPI_PARAM_LIST(fp);}
 486 #define _ACPI_REPORT_WARNING(a,b,c,fp)      {acpi_ut_report_warning(a,b,c); \
 487                                                                                                 acpi_os_printf ACPI_PARAM_LIST(fp);}
 488
 489 /*
 490  * Debug macros that are conditionally compiled
 491  */
 492 #ifdef ACPI_DEBUG_OUTPUT
 493 #define ACPI_MODULE_NAME(name)          static char ACPI_UNUSED_VAR *_acpi_module_name = name;
 494
 495 /*
 496  * Common parameters used for debug output functions:
 497  * line number, function name, module(file) name, component ID
 498  */
 499 #define ACPI_DEBUG_PARAMETERS           __LINE__, ACPI_GET_FUNCTION_NAME, _acpi_module_name, _COMPONENT
 500
 501 /*
 502  * Function entry tracing
 503  */
 504
 505 /*
 506  * If ACPI_GET_FUNCTION_NAME was not defined in the compiler-dependent header,
 507  * define it now. This is the case where there the compiler does not support
 508  * a __FUNCTION__ macro or equivalent. We save the function name on the
 509  * local stack.
 510  */
 511 #ifndef ACPI_GET_FUNCTION_NAME
 512 #define ACPI_GET_FUNCTION_NAME          _acpi_function_name
 513 /*
 514  * The Name parameter should be the procedure name as a quoted string.
 515  * This is declared as a local string ("my_function_name") so that it can
 516  * be also used by the function exit macros below.
 517  * Note: (const char) is used to be compatible with the debug interfaces
 518  * and macros such as __FUNCTION__.
 519  */
 520 #define ACPI_FUNCTION_NAME(name)        const char *_acpi_function_name = name;
 521
 522 #else
 523 /* Compiler supports __FUNCTION__ (or equivalent) -- Ignore this macro */
 524
 525 #define ACPI_FUNCTION_NAME(name)
 526 #endif
 527
 528 #define ACPI_FUNCTION_TRACE(a)          ACPI_FUNCTION_NAME(a) \
 529                                                                                         acpi_ut_trace(ACPI_DEBUG_PARAMETERS)
 530 #define ACPI_FUNCTION_TRACE_PTR(a,b)    ACPI_FUNCTION_NAME(a) \
 531                                                                                         acpi_ut_trace_ptr(ACPI_DEBUG_PARAMETERS,(void *)b)
 532 #define ACPI_FUNCTION_TRACE_U32(a,b)    ACPI_FUNCTION_NAME(a) \
 533                                                                                         acpi_ut_trace_u32(ACPI_DEBUG_PARAMETERS,(u32)b)
 534 #define ACPI_FUNCTION_TRACE_STR(a,b)    ACPI_FUNCTION_NAME(a) \
 535                                                                                         acpi_ut_trace_str(ACPI_DEBUG_PARAMETERS,(char *)b)
 536
 537 #define ACPI_FUNCTION_ENTRY()           acpi_ut_track_stack_ptr()
 538
 539 /*
 540  * Function exit tracing.
 541  * WARNING: These macros include a return statement.  This is usually considered
 542  * bad form, but having a separate exit macro is very ugly and difficult to maintain.
 543  * One of the FUNCTION_TRACE macros above must be used in conjunction with these macros
 544  * so that "_acpi_function_name" is defined.
 545  *
 546  * Note: the DO_WHILE0 macro is used to prevent some compilers from complaining
 547  * about these constructs.
 548  */
 549 #ifdef ACPI_USE_DO_WHILE_0
 550 #define ACPI_DO_WHILE0(a)               do a while(0)
 551 #else
 552 #define ACPI_DO_WHILE0(a)               a
 553 #endif
 554
 555 #define return_VOID                     ACPI_DO_WHILE0 ({ \
 556                                                                                         acpi_ut_exit (ACPI_DEBUG_PARAMETERS); \
 557                                                                                         return;})
 558 /*
 559  * There are two versions of most of the return macros. The default version is
 560  * safer, since it avoids side-effects by guaranteeing that the argument will
 561  * not be evaluated twice.
 562  *
 563  * A less-safe version of the macros is provided for optional use if the
 564  * compiler uses excessive CPU stack (for example, this may happen in the
 565  * debug case if code optimzation is disabled.)
 566  */
 567 #ifndef ACPI_SIMPLE_RETURN_MACROS
 568
 569 #define return_ACPI_STATUS(s)           ACPI_DO_WHILE0 ({ \
 570                                                                                         register acpi_status _s = (s); \
 571                                                                                         acpi_ut_status_exit (ACPI_DEBUG_PARAMETERS, _s); \
 572                                                                                         return (_s); })
 573 #define return_PTR(s)                   ACPI_DO_WHILE0 ({ \
 574                                                                                         register void *_s = (void *) (s); \
 575                                                                                         acpi_ut_ptr_exit (ACPI_DEBUG_PARAMETERS, (u8 *) _s); \
 576                                                                                         return (_s); })
 577 #define return_VALUE(s)                 ACPI_DO_WHILE0 ({ \
 578                                                                                         register acpi_integer _s = (s); \
 579                                                                                         acpi_ut_value_exit (ACPI_DEBUG_PARAMETERS, _s); \
 580                                                                                         return (_s); })
 581 #define return_UINT8(s)                 ACPI_DO_WHILE0 ({ \
 582                                                                                         register u8 _s = (u8) (s); \
 583                                                                                         acpi_ut_value_exit (ACPI_DEBUG_PARAMETERS, (acpi_integer) _s); \
 584                                                                                         return (_s); })
 585 #define return_UINT32(s)                ACPI_DO_WHILE0 ({ \
 586                                                                                         register u32 _s = (u32) (s); \
 587                                                                                         acpi_ut_value_exit (ACPI_DEBUG_PARAMETERS, (acpi_integer) _s); \
 588                                                                                         return (_s); })
 589 #else                           /* Use original less-safe macros */
 590
 591 #define return_ACPI_STATUS(s)           ACPI_DO_WHILE0 ({ \
 592                                                                                         acpi_ut_status_exit (ACPI_DEBUG_PARAMETERS, (s)); \
 593                                                                                         return((s)); })
 594 #define return_PTR(s)                   ACPI_DO_WHILE0 ({ \
 595                                                                                         acpi_ut_ptr_exit (ACPI_DEBUG_PARAMETERS, (u8 *) (s)); \
 596                                                                                         return((s)); })
 597 #define return_VALUE(s)                 ACPI_DO_WHILE0 ({ \
 598                                                                                         acpi_ut_value_exit (ACPI_DEBUG_PARAMETERS, (acpi_integer) (s)); \
 599                                                                                         return((s)); })
 600 #define return_UINT8(s)                 return_VALUE(s)
 601 #define return_UINT32(s)                return_VALUE(s)
 602
 603 #endif                          /* ACPI_SIMPLE_RETURN_MACROS */
 604
 605 /* Conditional execution */
 606
 607 #define ACPI_DEBUG_EXEC(a)              a
 608 #define ACPI_NORMAL_EXEC(a)
 609
 610 #define ACPI_DEBUG_DEFINE(a)            a;
 611 #define ACPI_DEBUG_ONLY_MEMBERS(a)      a;
 612 #define _VERBOSE_STRUCTURES
 613
 614 /* Stack and buffer dumping */
 615
 616 #define ACPI_DUMP_STACK_ENTRY(a)        acpi_ex_dump_operand((a),0)
 617 #define ACPI_DUMP_OPERANDS(a,b,c,d,e)   acpi_ex_dump_operands(a,b,c,d,e,_acpi_module_name,__LINE__)
 618
 619 #define ACPI_DUMP_ENTRY(a,b)            acpi_ns_dump_entry (a,b)
 620 #define ACPI_DUMP_PATHNAME(a,b,c,d)     acpi_ns_dump_pathname(a,b,c,d)
 621 #define ACPI_DUMP_RESOURCE_LIST(a)      acpi_rs_dump_resource_list(a)
 622 #define ACPI_DUMP_BUFFER(a,b)           acpi_ut_dump_buffer((u8 *)a,b,DB_BYTE_DISPLAY,_COMPONENT)
 623 #define ACPI_BREAK_MSG(a)               acpi_os_signal (ACPI_SIGNAL_BREAKPOINT,(a))
 624
 625 /*
 626  * Generate INT3 on ACPI_ERROR (Debug only!)
 627  */
 628 #define ACPI_ERROR_BREAK
 629 #ifdef  ACPI_ERROR_BREAK
 630 #define ACPI_BREAK_ON_ERROR(lvl)        if ((lvl)&ACPI_ERROR) \
 631                                                                                         acpi_os_signal(ACPI_SIGNAL_BREAKPOINT,"Fatal error encountered\n")
 632 #else
 633 #define ACPI_BREAK_ON_ERROR(lvl)
 634 #endif
 635
 636 /*
 637  * Master debug print macros
 638  * Print iff:
 639  *    1) Debug print for the current component is enabled
 640  *    2) Debug error level or trace level for the print statement is enabled
 641  */
 642 #define ACPI_DEBUG_PRINT(pl)            acpi_ut_debug_print ACPI_PARAM_LIST(pl)
 643 #define ACPI_DEBUG_PRINT_RAW(pl)        acpi_ut_debug_print_raw ACPI_PARAM_LIST(pl)
 644
 645 #else
 646 /*
 647  * This is the non-debug case -- make everything go away,
 648  * leaving no executable debug code!
 649  */
 650 #define ACPI_MODULE_NAME(name)
 651 #define _acpi_module_name ""
 652
 653 #define ACPI_DEBUG_EXEC(a)
 654 #define ACPI_NORMAL_EXEC(a)             a;
 655
 656 #define ACPI_DEBUG_DEFINE(a)
 657 #define ACPI_DEBUG_ONLY_MEMBERS(a)
 658 #define ACPI_FUNCTION_NAME(a)
 659 #define ACPI_FUNCTION_TRACE(a)
 660 #define ACPI_FUNCTION_TRACE_PTR(a,b)
 661 #define ACPI_FUNCTION_TRACE_U32(a,b)
 662 #define ACPI_FUNCTION_TRACE_STR(a,b)
 663 #define ACPI_FUNCTION_EXIT
 664 #define ACPI_FUNCTION_STATUS_EXIT(s)
 665 #define ACPI_FUNCTION_VALUE_EXIT(s)
 666 #define ACPI_FUNCTION_ENTRY()
 667 #define ACPI_DUMP_STACK_ENTRY(a)
 668 #define ACPI_DUMP_OPERANDS(a,b,c,d,e)
 669 #define ACPI_DUMP_ENTRY(a,b)
 670 #define ACPI_DUMP_PATHNAME(a,b,c,d)
 671 #define ACPI_DUMP_RESOURCE_LIST(a)
 672 #define ACPI_DUMP_BUFFER(a,b)
 673 #define ACPI_DEBUG_PRINT(pl)
 674 #define ACPI_DEBUG_PRINT_RAW(pl)
 675 #define ACPI_BREAK_MSG(a)
 676
 677 #define return_VOID                     return
 678 #define return_ACPI_STATUS(s)           return(s)
 679 #define return_VALUE(s)                 return(s)
 680 #define return_UINT8(s)                 return(s)
 681 #define return_UINT32(s)                return(s)
 682 #define return_PTR(s)                   return(s)
 683
 684 #endif
 685
 686 /*
 687  * Some code only gets executed when the debugger is built in.
 688  * Note that this is entirely independent of whether the
 689  * DEBUG_PRINT stuff (set by ACPI_DEBUG_OUTPUT) is on, or not.
 690  */
 691 #ifdef ACPI_DEBUGGER
 692 #define ACPI_DEBUGGER_EXEC(a)           a
 693 #else
 694 #define ACPI_DEBUGGER_EXEC(a)
 695 #endif
 696
 697 /*
 698  * For 16-bit code, we want to shrink some things even though
 699  * we are using ACPI_DEBUG_OUTPUT to get the debug output
 700  */
 701 #if ACPI_MACHINE_WIDTH == 16
 702 #undef ACPI_DEBUG_ONLY_MEMBERS
 703 #undef _VERBOSE_STRUCTURES
 704 #define ACPI_DEBUG_ONLY_MEMBERS(a)
 705 #endif
 706
 707 #ifdef ACPI_DEBUG_OUTPUT
 708 /*
 709  * 1) Set name to blanks
 710  * 2) Copy the object name
 711  */
 712 #define ACPI_ADD_OBJECT_NAME(a,b)       ACPI_MEMSET (a->common.name, ' ', sizeof (a->common.name));\
 713                                                                                 ACPI_STRNCPY (a->common.name, acpi_gbl_ns_type_names[b], sizeof (a->common.name))
 714 #else
 715
 716 #define ACPI_ADD_OBJECT_NAME(a,b)
 717 #endif
 718
 719 /*
 720  * Memory allocation tracking (DEBUG ONLY)
 721  */
 722 #ifndef ACPI_DBG_TRACK_ALLOCATIONS
 723
 724 /* Memory allocation */
 725
 726 #define ACPI_MEM_ALLOCATE(a)            acpi_ut_allocate((acpi_size)(a),_COMPONENT,_acpi_module_name,__LINE__)
 727 #define ACPI_MEM_CALLOCATE(a)           acpi_ut_callocate((acpi_size)(a), _COMPONENT,_acpi_module_name,__LINE__)
 728 #define ACPI_MEM_FREE(a)                acpi_os_free(a)
 729 #define ACPI_MEM_TRACKING(a)
 730
 731 #else
 732
 733 /* Memory allocation */
 734
 735 #define ACPI_MEM_ALLOCATE(a)            acpi_ut_allocate_and_track((acpi_size)(a),_COMPONENT,_acpi_module_name,__LINE__)
 736 #define ACPI_MEM_CALLOCATE(a)           acpi_ut_callocate_and_track((acpi_size)(a), _COMPONENT,_acpi_module_name,__LINE__)
 737 #define ACPI_MEM_FREE(a)                acpi_ut_free_and_track(a,_COMPONENT,_acpi_module_name,__LINE__)
 738 #define ACPI_MEM_TRACKING(a)            a
 739
 740 #endif                          /* ACPI_DBG_TRACK_ALLOCATIONS */
 741
 742 #endif                          /* ACMACROS_H */