include/acpi/acmacros.h

   1 /******************************************************************************
   2  *
   3  * Name: acmacros.h - C macros for the entire subsystem.
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2006, 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  * (out of 64) 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 data using a pointer.  Any more than a byte and we
 108  * get into potential aligment issues -- see the STORE macros below.
 109  * Use with care.
 110  */
 111 #define ACPI_GET8(ptr)                  *ACPI_CAST_PTR (u8, ptr)
 112 #define ACPI_GET16(ptr)                 *ACPI_CAST_PTR (u16, ptr)
 113 #define ACPI_GET32(ptr)                 *ACPI_CAST_PTR (u32, ptr)
 114 #define ACPI_GET64(ptr)                 *ACPI_CAST_PTR (u64, ptr)
 115 #define ACPI_SET8(ptr)                  *ACPI_CAST_PTR (u8, ptr)
 116 #define ACPI_SET16(ptr)                 *ACPI_CAST_PTR (u16, ptr)
 117 #define ACPI_SET32(ptr)                 *ACPI_CAST_PTR (u32, ptr)
 118 #define ACPI_SET64(ptr)                 *ACPI_CAST_PTR (u64, ptr)
 119
 120 /*
 121  * Pointer manipulation
 122  */
 123 #define ACPI_CAST_PTR(t, p)             ((t *) (acpi_uintptr_t) (p))
 124 #define ACPI_CAST_INDIRECT_PTR(t, p)    ((t **) (acpi_uintptr_t) (p))
 125 #define ACPI_ADD_PTR(t,a,b)             ACPI_CAST_PTR (t, (ACPI_CAST_PTR (u8,(a)) + (acpi_native_uint)(b)))
 126 #define ACPI_PTR_DIFF(a,b)              (acpi_native_uint) (ACPI_CAST_PTR (u8,(a)) - ACPI_CAST_PTR (u8,(b)))
 127
 128 /* Pointer/Integer type conversions */
 129
 130 #define ACPI_TO_POINTER(i)              ACPI_ADD_PTR (void,(void *) NULL,(acpi_native_uint) i)
 131 #define ACPI_TO_INTEGER(p)              ACPI_PTR_DIFF (p,(void *) NULL)
 132 #define ACPI_OFFSET(d,f)                (acpi_size) ACPI_PTR_DIFF (&(((d *)0)->f),(void *) NULL)
 133
 134 #if ACPI_MACHINE_WIDTH == 16
 135 #define ACPI_STORE_POINTER(d,s)         ACPI_MOVE_32_TO_32(d,s)
 136 #define ACPI_PHYSADDR_TO_PTR(i)         (void *)(i)
 137 #define ACPI_PTR_TO_PHYSADDR(i)         (u32) ACPI_CAST_PTR (u8,(i))
 138 #else
 139 #define ACPI_PHYSADDR_TO_PTR(i)         ACPI_TO_POINTER(i)
 140 #define ACPI_PTR_TO_PHYSADDR(i)         ACPI_TO_INTEGER(i)
 141 #endif
 142
 143 #ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED
 144 #define ACPI_COMPARE_NAME(a,b)          (*ACPI_CAST_PTR (u32,(a)) == *ACPI_CAST_PTR (u32,(b)))
 145 #else
 146 #define ACPI_COMPARE_NAME(a,b)          (!ACPI_STRNCMP (ACPI_CAST_PTR (char,(a)), ACPI_CAST_PTR (char,(b)), 4))
 147 #endif
 148
 149 /*
 150  * Macros for moving data around to/from buffers that are possibly unaligned.
 151  * If the hardware supports the transfer of unaligned data, just do the store.
 152  * Otherwise, we have to move one byte at a time.
 153  */
 154 #ifdef ACPI_BIG_ENDIAN
 155 /*
 156  * Macros for big-endian machines
 157  */
 158
 159 /* This macro sets a buffer index, starting from the end of the buffer */
 160
 161 #define ACPI_BUFFER_INDEX(buf_len,buf_offset,byte_gran) ((buf_len) - (((buf_offset)+1) * (byte_gran)))
 162
 163 /* These macros reverse the bytes during the move, converting little-endian to big endian */
 164
 165          /* Big Endian      <==        Little Endian */
 166          /*  Hi...Lo                     Lo...Hi     */
 167 /* 16-bit source, 16/32/64 destination */
 168
 169 #define ACPI_MOVE_16_TO_16(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[1];\
 170                           ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[0];}
 171
 172 #define ACPI_MOVE_16_TO_32(d,s)         {(*(u32 *)(void *)(d))=0;\
 173                                           ((u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[1];\
 174                                           ((u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[0];}
 175
 176 #define ACPI_MOVE_16_TO_64(d,s)         {(*(u64 *)(void *)(d))=0;\
 177                                                            ((u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\
 178                                                            ((u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];}
 179
 180 /* 32-bit source, 16/32/64 destination */
 181
 182 #define ACPI_MOVE_32_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
 183
 184 #define ACPI_MOVE_32_TO_32(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[3];\
 185                                                                           ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[2];\
 186                                                                           ((  u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[1];\
 187                                                                           ((  u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[0];}
 188
 189 #define ACPI_MOVE_32_TO_64(d,s)         {(*(u64 *)(void *)(d))=0;\
 190                                                                                    ((u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[3];\
 191                                                                                    ((u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[2];\
 192                                                                                    ((u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\
 193                                                                                    ((u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];}
 194
 195 /* 64-bit source, 16/32/64 destination */
 196
 197 #define ACPI_MOVE_64_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
 198
 199 #define ACPI_MOVE_64_TO_32(d,s)         ACPI_MOVE_32_TO_32(d,s) /* Truncate to 32 */
 200
 201 #define ACPI_MOVE_64_TO_64(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[7];\
 202                                                                                  ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[6];\
 203                                                                                  ((  u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[5];\
 204                                                                                  ((  u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[4];\
 205                                                                                  ((  u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[3];\
 206                                                                                  ((  u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[2];\
 207                                                                                  ((  u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[1];\
 208                                                                                  ((  u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[0];}
 209 #else
 210 /*
 211  * Macros for little-endian machines
 212  */
 213
 214 /* This macro sets a buffer index, starting from the beginning of the buffer */
 215
 216 #define ACPI_BUFFER_INDEX(buf_len,buf_offset,byte_gran) (buf_offset)
 217
 218 #ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED
 219
 220 /* The hardware supports unaligned transfers, just do the little-endian move */
 221
 222 #if ACPI_MACHINE_WIDTH == 16
 223
 224 /* No 64-bit integers */
 225 /* 16-bit source, 16/32/64 destination */
 226
 227 #define ACPI_MOVE_16_TO_16(d,s)         *(u16 *)(void *)(d) = *(u16 *)(void *)(s)
 228 #define ACPI_MOVE_16_TO_32(d,s)         *(u32 *)(void *)(d) = *(u16 *)(void *)(s)
 229 #define ACPI_MOVE_16_TO_64(d,s)         ACPI_MOVE_16_TO_32(d,s)
 230
 231 /* 32-bit source, 16/32/64 destination */
 232
 233 #define ACPI_MOVE_32_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
 234 #define ACPI_MOVE_32_TO_32(d,s)         *(u32 *)(void *)(d) = *(u32 *)(void *)(s)
 235 #define ACPI_MOVE_32_TO_64(d,s)         ACPI_MOVE_32_TO_32(d,s)
 236
 237 /* 64-bit source, 16/32/64 destination */
 238
 239 #define ACPI_MOVE_64_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
 240 #define ACPI_MOVE_64_TO_32(d,s)         ACPI_MOVE_32_TO_32(d,s) /* Truncate to 32 */
 241 #define ACPI_MOVE_64_TO_64(d,s)         ACPI_MOVE_32_TO_32(d,s)
 242
 243 #else
 244 /* 16-bit source, 16/32/64 destination */
 245
 246 #define ACPI_MOVE_16_TO_16(d,s)         *(u16 *)(void *)(d) = *(u16 *)(void *)(s)
 247 #define ACPI_MOVE_16_TO_32(d,s)         *(u32 *)(void *)(d) = *(u16 *)(void *)(s)
 248 #define ACPI_MOVE_16_TO_64(d,s)         *(u64 *)(void *)(d) = *(u16 *)(void *)(s)
 249
 250 /* 32-bit source, 16/32/64 destination */
 251
 252 #define ACPI_MOVE_32_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
 253 #define ACPI_MOVE_32_TO_32(d,s)         *(u32 *)(void *)(d) = *(u32 *)(void *)(s)
 254 #define ACPI_MOVE_32_TO_64(d,s)         *(u64 *)(void *)(d) = *(u32 *)(void *)(s)
 255
 256 /* 64-bit source, 16/32/64 destination */
 257
 258 #define ACPI_MOVE_64_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
 259 #define ACPI_MOVE_64_TO_32(d,s)         ACPI_MOVE_32_TO_32(d,s) /* Truncate to 32 */
 260 #define ACPI_MOVE_64_TO_64(d,s)         *(u64 *)(void *)(d) = *(u64 *)(void *)(s)
 261 #endif
 262
 263 #else
 264 /*
 265  * The hardware does not support unaligned transfers.  We must move the
 266  * data one byte at a time.  These macros work whether the source or
 267  * the destination (or both) is/are unaligned.  (Little-endian move)
 268  */
 269
 270 /* 16-bit source, 16/32/64 destination */
 271
 272 #define ACPI_MOVE_16_TO_16(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
 273                                                                                  ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];}
 274
 275 #define ACPI_MOVE_16_TO_32(d,s)         {(*(u32 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d,s);}
 276 #define ACPI_MOVE_16_TO_64(d,s)         {(*(u64 *)(void *)(d)) = 0; ACPI_MOVE_16_TO_16(d,s);}
 277
 278 /* 32-bit source, 16/32/64 destination */
 279
 280 #define ACPI_MOVE_32_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
 281
 282 #define ACPI_MOVE_32_TO_32(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
 283                                                                                  ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];\
 284                                                                                  ((  u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[2];\
 285                                                                                  ((  u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[3];}
 286
 287 #define ACPI_MOVE_32_TO_64(d,s)         {(*(u64 *)(void *)(d)) = 0; ACPI_MOVE_32_TO_32(d,s);}
 288
 289 /* 64-bit source, 16/32/64 destination */
 290
 291 #define ACPI_MOVE_64_TO_16(d,s)         ACPI_MOVE_16_TO_16(d,s) /* Truncate to 16 */
 292 #define ACPI_MOVE_64_TO_32(d,s)         ACPI_MOVE_32_TO_32(d,s) /* Truncate to 32 */
 293 #define ACPI_MOVE_64_TO_64(d,s)         {((  u8 *)(void *)(d))[0] = ((u8 *)(void *)(s))[0];\
 294                                                                                  ((  u8 *)(void *)(d))[1] = ((u8 *)(void *)(s))[1];\
 295                                                                                  ((  u8 *)(void *)(d))[2] = ((u8 *)(void *)(s))[2];\
 296                                                                                  ((  u8 *)(void *)(d))[3] = ((u8 *)(void *)(s))[3];\
 297                                                                                  ((  u8 *)(void *)(d))[4] = ((u8 *)(void *)(s))[4];\
 298                                                                                  ((  u8 *)(void *)(d))[5] = ((u8 *)(void *)(s))[5];\
 299                                                                                  ((  u8 *)(void *)(d))[6] = ((u8 *)(void *)(s))[6];\
 300                                                                                  ((  u8 *)(void *)(d))[7] = ((u8 *)(void *)(s))[7];}
 301 #endif
 302 #endif
 303
 304 /* Macros based on machine integer width */
 305
 306 #if ACPI_MACHINE_WIDTH == 16
 307 #define ACPI_MOVE_SIZE_TO_16(d,s)       ACPI_MOVE_16_TO_16(d,s)
 308
 309 #elif ACPI_MACHINE_WIDTH == 32
 310 #define ACPI_MOVE_SIZE_TO_16(d,s)       ACPI_MOVE_32_TO_16(d,s)
 311
 312 #elif ACPI_MACHINE_WIDTH == 64
 313 #define ACPI_MOVE_SIZE_TO_16(d,s)       ACPI_MOVE_64_TO_16(d,s)
 314
 315 #else
 316 #error unknown ACPI_MACHINE_WIDTH
 317 #endif
 318
 319 /*
 320  * Fast power-of-two math macros for non-optimized compilers
 321  */
 322 #define _ACPI_DIV(value,power_of2)      ((u32) ((value) >> (power_of2)))
 323 #define _ACPI_MUL(value,power_of2)      ((u32) ((value) << (power_of2)))
 324 #define _ACPI_MOD(value,divisor)        ((u32) ((value) & ((divisor) -1)))
 325
 326 #define ACPI_DIV_2(a)                   _ACPI_DIV(a,1)
 327 #define ACPI_MUL_2(a)                   _ACPI_MUL(a,1)
 328 #define ACPI_MOD_2(a)                   _ACPI_MOD(a,2)
 329
 330 #define ACPI_DIV_4(a)                   _ACPI_DIV(a,2)
 331 #define ACPI_MUL_4(a)                   _ACPI_MUL(a,2)
 332 #define ACPI_MOD_4(a)                   _ACPI_MOD(a,4)
 333
 334 #define ACPI_DIV_8(a)                   _ACPI_DIV(a,3)
 335 #define ACPI_MUL_8(a)                   _ACPI_MUL(a,3)
 336 #define ACPI_MOD_8(a)                   _ACPI_MOD(a,8)
 337
 338 #define ACPI_DIV_16(a)                  _ACPI_DIV(a,4)
 339 #define ACPI_MUL_16(a)                  _ACPI_MUL(a,4)
 340 #define ACPI_MOD_16(a)                  _ACPI_MOD(a,16)
 341
 342 #define ACPI_DIV_32(a)                  _ACPI_DIV(a,5)
 343 #define ACPI_MUL_32(a)                  _ACPI_MUL(a,5)
 344 #define ACPI_MOD_32(a)                  _ACPI_MOD(a,32)
 345
 346 /*
 347  * Rounding macros (Power of two boundaries only)
 348  */
 349 #define ACPI_ROUND_DOWN(value,boundary)     (((acpi_native_uint)(value)) & \
 350                                                                                                 (~(((acpi_native_uint) boundary)-1)))
 351
 352 #define ACPI_ROUND_UP(value,boundary)       ((((acpi_native_uint)(value)) + \
 353                                                                                                 (((acpi_native_uint) boundary)-1)) & \
 354                                                                                                 (~(((acpi_native_uint) boundary)-1)))
 355
 356 /* Note: sizeof(acpi_native_uint) evaluates to either 2, 4, or 8 */
 357
 358 #define ACPI_ROUND_DOWN_to_32_bIT(a)        ACPI_ROUND_DOWN(a,4)
 359 #define ACPI_ROUND_DOWN_to_64_bIT(a)        ACPI_ROUND_DOWN(a,8)
 360 #define ACPI_ROUND_DOWN_TO_NATIVE_WORD(a)   ACPI_ROUND_DOWN(a,sizeof(acpi_native_uint))
 361
 362 #define ACPI_ROUND_UP_to_32_bIT(a)          ACPI_ROUND_UP(a,4)
 363 #define ACPI_ROUND_UP_to_64_bIT(a)          ACPI_ROUND_UP(a,8)
 364 #define ACPI_ROUND_UP_TO_NATIVE_WORD(a)     ACPI_ROUND_UP(a,sizeof(acpi_native_uint))
 365
 366 #define ACPI_ROUND_BITS_UP_TO_BYTES(a)      ACPI_DIV_8((a) + 7)
 367 #define ACPI_ROUND_BITS_DOWN_TO_BYTES(a)    ACPI_DIV_8((a))
 368
 369 #define ACPI_ROUND_UP_TO_1K(a)              (((a) + 1023) >> 10)
 370
 371 /* Generic (non-power-of-two) rounding */
 372
 373 #define ACPI_ROUND_UP_TO(value,boundary)    (((value) + ((boundary)-1)) / (boundary))
 374
 375 #define ACPI_IS_MISALIGNED(value)           (((acpi_native_uint)value) & (sizeof(acpi_native_uint)-1))
 376
 377 /*
 378  * Bitmask creation
 379  * Bit positions start at zero.
 380  * MASK_BITS_ABOVE creates a mask starting AT the position and above
 381  * MASK_BITS_BELOW creates a mask starting one bit BELOW the position
 382  */
 383 #define ACPI_MASK_BITS_ABOVE(position)      (~((ACPI_INTEGER_MAX) << ((u32) (position))))
 384 #define ACPI_MASK_BITS_BELOW(position)      ((ACPI_INTEGER_MAX) << ((u32) (position)))
 385
 386 #define ACPI_IS_OCTAL_DIGIT(d)              (((char)(d) >= '0') && ((char)(d) <= '7'))
 387
 388 /* Bitfields within ACPI registers */
 389
 390 #define ACPI_REGISTER_PREPARE_BITS(val, pos, mask)      ((val << pos) & mask)
 391 #define ACPI_REGISTER_INSERT_VALUE(reg, pos, mask, val)  reg = (reg & (~(mask))) | ACPI_REGISTER_PREPARE_BITS(val, pos, mask)
 392
 393 /* Generate a UUID */
 394
 395 #define ACPI_INIT_UUID(a,b,c,d0,d1,d2,d3,d4,d5,d6,d7) \
 396         (a) & 0xFF, ((a) >> 8) & 0xFF, ((a) >> 16) & 0xFF, ((a) >> 24) & 0xFF, \
 397         (b) & 0xFF, ((b) >> 8) & 0xFF, \
 398         (c) & 0xFF, ((c) >> 8) & 0xFF, \
 399         (d0), (d1), (d2), (d3), (d4), (d5), (d6), (d7)
 400
 401 /*
 402  * An struct acpi_namespace_node * can appear in some contexts,
 403  * where a pointer to an union acpi_operand_object    can also
 404  * appear.  This macro is used to distinguish them.
 405  *
 406  * The "Descriptor" field is the first field in both structures.
 407  */
 408 #define ACPI_GET_DESCRIPTOR_TYPE(d)     (((union acpi_descriptor *)(void *)(d))->common.descriptor_type)
 409 #define ACPI_SET_DESCRIPTOR_TYPE(d,t)   (((union acpi_descriptor *)(void *)(d))->common.descriptor_type = t)
 410
 411 /* Macro to test the object type */
 412
 413 #define ACPI_GET_OBJECT_TYPE(d)         (((union acpi_operand_object *)(void *)(d))->common.type)
 414
 415 /* Macro to check the table flags for SINGLE or MULTIPLE tables are allowed */
 416
 417 #define ACPI_IS_SINGLE_TABLE(x)         (((x) & 0x01) == ACPI_TABLE_SINGLE ? 1 : 0)
 418
 419 /*
 420  * Macros for the master AML opcode table
 421  */
 422 #if defined(ACPI_DISASSEMBLER) || defined (ACPI_DEBUG_OUTPUT)
 423 #define ACPI_OP(name,Pargs,Iargs,obj_type,class,type,flags)    {name,(u32)(Pargs),(u32)(Iargs),(u32)(flags),obj_type,class,type}
 424 #else
 425 #define ACPI_OP(name,Pargs,Iargs,obj_type,class,type,flags)    {(u32)(Pargs),(u32)(Iargs),(u32)(flags),obj_type,class,type}
 426 #endif
 427
 428 #ifdef ACPI_DISASSEMBLER
 429 #define ACPI_DISASM_ONLY_MEMBERS(a)     a;
 430 #else
 431 #define ACPI_DISASM_ONLY_MEMBERS(a)
 432 #endif
 433
 434 #define ARG_TYPE_WIDTH                  5
 435 #define ARG_1(x)                        ((u32)(x))
 436 #define ARG_2(x)                        ((u32)(x) << (1 * ARG_TYPE_WIDTH))
 437 #define ARG_3(x)                        ((u32)(x) << (2 * ARG_TYPE_WIDTH))
 438 #define ARG_4(x)                        ((u32)(x) << (3 * ARG_TYPE_WIDTH))
 439 #define ARG_5(x)                        ((u32)(x) << (4 * ARG_TYPE_WIDTH))
 440 #define ARG_6(x)                        ((u32)(x) << (5 * ARG_TYPE_WIDTH))
 441
 442 #define ARGI_LIST1(a)                   (ARG_1(a))
 443 #define ARGI_LIST2(a,b)                 (ARG_1(b)|ARG_2(a))
 444 #define ARGI_LIST3(a,b,c)               (ARG_1(c)|ARG_2(b)|ARG_3(a))
 445 #define ARGI_LIST4(a,b,c,d)             (ARG_1(d)|ARG_2(c)|ARG_3(b)|ARG_4(a))
 446 #define ARGI_LIST5(a,b,c,d,e)           (ARG_1(e)|ARG_2(d)|ARG_3(c)|ARG_4(b)|ARG_5(a))
 447 #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))
 448
 449 #define ARGP_LIST1(a)                   (ARG_1(a))
 450 #define ARGP_LIST2(a,b)                 (ARG_1(a)|ARG_2(b))
 451 #define ARGP_LIST3(a,b,c)               (ARG_1(a)|ARG_2(b)|ARG_3(c))
 452 #define ARGP_LIST4(a,b,c,d)             (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d))
 453 #define ARGP_LIST5(a,b,c,d,e)           (ARG_1(a)|ARG_2(b)|ARG_3(c)|ARG_4(d)|ARG_5(e))
 454 #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))
 455
 456 #define GET_CURRENT_ARG_TYPE(list)      (list & ((u32) 0x1F))
 457 #define INCREMENT_ARG_LIST(list)        (list >>= ((u32) ARG_TYPE_WIDTH))
 458
 459 #if defined (ACPI_DEBUG_OUTPUT) || !defined (ACPI_NO_ERROR_MESSAGES)
 460 /*
 461  * Module name is include in both debug and non-debug versions primarily for
 462  * error messages. The __FILE__ macro is not very useful for this, because it
 463  * often includes the entire pathname to the module
 464  */
 465 #define ACPI_MODULE_NAME(name)          static char ACPI_UNUSED_VAR *_acpi_module_name = name;
 466 #else
 467 #define ACPI_MODULE_NAME(name)
 468 #endif
 469
 470 /*
 471  * Ascii error messages can be configured out
 472  */
 473 #ifndef ACPI_NO_ERROR_MESSAGES
 474 #define AE_INFO                         _acpi_module_name, __LINE__
 475
 476 /*
 477  * Error reporting. Callers module and line number are inserted by AE_INFO,
 478  * the plist contains a set of parens to allow variable-length lists.
 479  * These macros are used for both the debug and non-debug versions of the code.
 480  */
 481 #define ACPI_INFO(plist)                acpi_ut_info plist
 482 #define ACPI_WARNING(plist)             acpi_ut_warning plist
 483 #define ACPI_EXCEPTION(plist)           acpi_ut_exception plist
 484 #define ACPI_ERROR(plist)               acpi_ut_error plist
 485 #define ACPI_ERROR_NAMESPACE(s,e)       acpi_ns_report_error (AE_INFO, s, e);
 486 #define ACPI_ERROR_METHOD(s,n,p,e)      acpi_ns_report_method_error (AE_INFO, s, n, p, e);
 487
 488 #else
 489
 490 /* No error messages */
 491
 492 #define ACPI_INFO(plist)
 493 #define ACPI_WARNING(plist)
 494 #define ACPI_EXCEPTION(plist)
 495 #define ACPI_ERROR(plist)
 496 #define ACPI_ERROR_NAMESPACE(s,e)
 497 #define ACPI_ERROR_METHOD(s,n,p,e)
 498 #endif
 499
 500 /*
 501  * Debug macros that are conditionally compiled
 502  */
 503 #ifdef ACPI_DEBUG_OUTPUT
 504
 505 /*
 506  * Common parameters used for debug output functions:
 507  * line number, function name, module(file) name, component ID
 508  */
 509 #define ACPI_DEBUG_PARAMETERS           __LINE__, ACPI_GET_FUNCTION_NAME, _acpi_module_name, _COMPONENT
 510
 511 /*
 512  * Function entry tracing
 513  */
 514
 515 /*
 516  * If ACPI_GET_FUNCTION_NAME was not defined in the compiler-dependent header,
 517  * define it now. This is the case where there the compiler does not support
 518  * a __FUNCTION__ macro or equivalent. We save the function name on the
 519  * local stack.
 520  */
 521 #ifndef ACPI_GET_FUNCTION_NAME
 522 #define ACPI_GET_FUNCTION_NAME          _acpi_function_name
 523 /*
 524  * The Name parameter should be the procedure name as a quoted string.
 525  * This is declared as a local string ("my_function_name") so that it can
 526  * be also used by the function exit macros below.
 527  * Note: (const char) is used to be compatible with the debug interfaces
 528  * and macros such as __FUNCTION__.
 529  */
 530 #define ACPI_FUNCTION_NAME(name)        const char *_acpi_function_name = name;
 531
 532 #else
 533 /* Compiler supports __FUNCTION__ (or equivalent) -- Ignore this macro */
 534
 535 #define ACPI_FUNCTION_NAME(name)
 536 #endif
 537
 538 #define ACPI_FUNCTION_TRACE(a)          ACPI_FUNCTION_NAME(a) \
 539                           acpi_ut_trace(ACPI_DEBUG_PARAMETERS)
 540 #define ACPI_FUNCTION_TRACE_PTR(a,b)    ACPI_FUNCTION_NAME(a) \
 541                                            acpi_ut_trace_ptr(ACPI_DEBUG_PARAMETERS,(void *)b)
 542 #define ACPI_FUNCTION_TRACE_U32(a,b)    ACPI_FUNCTION_NAME(a) \
 543                                                          acpi_ut_trace_u32(ACPI_DEBUG_PARAMETERS,(u32)b)
 544 #define ACPI_FUNCTION_TRACE_STR(a,b)    ACPI_FUNCTION_NAME(a) \
 545                                                                           acpi_ut_trace_str(ACPI_DEBUG_PARAMETERS,(char *)b)
 546
 547 #define ACPI_FUNCTION_ENTRY()           acpi_ut_track_stack_ptr()
 548
 549 /*
 550  * Function exit tracing.
 551  * WARNING: These macros include a return statement.  This is usually considered
 552  * bad form, but having a separate exit macro is very ugly and difficult to maintain.
 553  * One of the FUNCTION_TRACE macros above must be used in conjunction with these macros
 554  * so that "_acpi_function_name" is defined.
 555  *
 556  * Note: the DO_WHILE0 macro is used to prevent some compilers from complaining
 557  * about these constructs.
 558  */
 559 #ifdef ACPI_USE_DO_WHILE_0
 560 #define ACPI_DO_WHILE0(a)               do a while(0)
 561 #else
 562 #define ACPI_DO_WHILE0(a)               a
 563 #endif
 564
 565 #define return_VOID                     ACPI_DO_WHILE0 ({ \
 566                                                                                         acpi_ut_exit (ACPI_DEBUG_PARAMETERS); \
 567                                                                                         return;})
 568 /*
 569  * There are two versions of most of the return macros. The default version is
 570  * safer, since it avoids side-effects by guaranteeing that the argument will
 571  * not be evaluated twice.
 572  *
 573  * A less-safe version of the macros is provided for optional use if the
 574  * compiler uses excessive CPU stack (for example, this may happen in the
 575  * debug case if code optimzation is disabled.)
 576  */
 577 #ifndef ACPI_SIMPLE_RETURN_MACROS
 578
 579 #define return_ACPI_STATUS(s)           ACPI_DO_WHILE0 ({ \
 580                                                                                         register acpi_status _s = (s); \
 581                                                                                         acpi_ut_status_exit (ACPI_DEBUG_PARAMETERS, _s); \
 582                                                                                         return (_s); })
 583 #define return_PTR(s)                   ACPI_DO_WHILE0 ({ \
 584                                                                                         register void *_s = (void *) (s); \
 585                                                                                         acpi_ut_ptr_exit (ACPI_DEBUG_PARAMETERS, (u8 *) _s); \
 586                                                                                         return (_s); })
 587 #define return_VALUE(s)                 ACPI_DO_WHILE0 ({ \
 588                                                                                         register acpi_integer _s = (s); \
 589                                                                                         acpi_ut_value_exit (ACPI_DEBUG_PARAMETERS, _s); \
 590                                                                                         return (_s); })
 591 #define return_UINT8(s)                 ACPI_DO_WHILE0 ({ \
 592                                                                                         register u8 _s = (u8) (s); \
 593                                                                                         acpi_ut_value_exit (ACPI_DEBUG_PARAMETERS, (acpi_integer) _s); \
 594                                                                                         return (_s); })
 595 #define return_UINT32(s)                ACPI_DO_WHILE0 ({ \
 596                                                                                         register u32 _s = (u32) (s); \
 597                                                                                         acpi_ut_value_exit (ACPI_DEBUG_PARAMETERS, (acpi_integer) _s); \
 598                                                                                         return (_s); })
 599 #else                           /* Use original less-safe macros */
 600
 601 #define return_ACPI_STATUS(s)           ACPI_DO_WHILE0 ({ \
 602                                                                                         acpi_ut_status_exit (ACPI_DEBUG_PARAMETERS, (s)); \
 603                                                                                         return((s)); })
 604 #define return_PTR(s)                   ACPI_DO_WHILE0 ({ \
 605                                                                                         acpi_ut_ptr_exit (ACPI_DEBUG_PARAMETERS, (u8 *) (s)); \
 606                                                                                         return((s)); })
 607 #define return_VALUE(s)                 ACPI_DO_WHILE0 ({ \
 608                                                                                         acpi_ut_value_exit (ACPI_DEBUG_PARAMETERS, (acpi_integer) (s)); \
 609                                                                                         return((s)); })
 610 #define return_UINT8(s)                 return_VALUE(s)
 611 #define return_UINT32(s)                return_VALUE(s)
 612
 613 #endif                          /* ACPI_SIMPLE_RETURN_MACROS */
 614
 615 /* Conditional execution */
 616
 617 #define ACPI_DEBUG_EXEC(a)              a
 618 #define ACPI_NORMAL_EXEC(a)
 619
 620 #define ACPI_DEBUG_DEFINE(a)            a;
 621 #define ACPI_DEBUG_ONLY_MEMBERS(a)      a;
 622 #define _VERBOSE_STRUCTURES
 623
 624 /* Stack and buffer dumping */
 625
 626 #define ACPI_DUMP_STACK_ENTRY(a)        acpi_ex_dump_operand((a),0)
 627 #define ACPI_DUMP_OPERANDS(a,b,c,d,e)   acpi_ex_dump_operands(a,b,c,d,e,_acpi_module_name,__LINE__)
 628
 629 #define ACPI_DUMP_ENTRY(a,b)            acpi_ns_dump_entry (a,b)
 630 #define ACPI_DUMP_PATHNAME(a,b,c,d)     acpi_ns_dump_pathname(a,b,c,d)
 631 #define ACPI_DUMP_RESOURCE_LIST(a)      acpi_rs_dump_resource_list(a)
 632 #define ACPI_DUMP_BUFFER(a,b)           acpi_ut_dump_buffer((u8 *)a,b,DB_BYTE_DISPLAY,_COMPONENT)
 633
 634 /*
 635  * Master debug print macros
 636  * Print iff:
 637  *    1) Debug print for the current component is enabled
 638  *    2) Debug error level or trace level for the print statement is enabled
 639  */
 640 #define ACPI_DEBUG_PRINT(plist)         acpi_ut_debug_print plist
 641 #define ACPI_DEBUG_PRINT_RAW(plist)     acpi_ut_debug_print_raw plist
 642
 643 #else
 644 /*
 645  * This is the non-debug case -- make everything go away,
 646  * leaving no executable debug code!
 647  */
 648 #define ACPI_DEBUG_EXEC(a)
 649 #define ACPI_NORMAL_EXEC(a)             a;
 650
 651 #define ACPI_DEBUG_DEFINE(a)
 652 #define ACPI_DEBUG_ONLY_MEMBERS(a)
 653 #define ACPI_FUNCTION_NAME(a)
 654 #define ACPI_FUNCTION_TRACE(a)
 655 #define ACPI_FUNCTION_TRACE_PTR(a,b)
 656 #define ACPI_FUNCTION_TRACE_U32(a,b)
 657 #define ACPI_FUNCTION_TRACE_STR(a,b)
 658 #define ACPI_FUNCTION_EXIT
 659 #define ACPI_FUNCTION_STATUS_EXIT(s)
 660 #define ACPI_FUNCTION_VALUE_EXIT(s)
 661 #define ACPI_FUNCTION_ENTRY()
 662 #define ACPI_DUMP_STACK_ENTRY(a)
 663 #define ACPI_DUMP_OPERANDS(a,b,c,d,e)
 664 #define ACPI_DUMP_ENTRY(a,b)
 665 #define ACPI_DUMP_TABLES(a,b)
 666 #define ACPI_DUMP_PATHNAME(a,b,c,d)
 667 #define ACPI_DUMP_RESOURCE_LIST(a)
 668 #define ACPI_DUMP_BUFFER(a,b)
 669 #define ACPI_DEBUG_PRINT(pl)
 670 #define ACPI_DEBUG_PRINT_RAW(pl)
 671
 672 #define return_VOID                     return
 673 #define return_ACPI_STATUS(s)           return(s)
 674 #define return_VALUE(s)                 return(s)
 675 #define return_UINT8(s)                 return(s)
 676 #define return_UINT32(s)                return(s)
 677 #define return_PTR(s)                   return(s)
 678
 679 #endif
 680
 681 /*
 682  * Some code only gets executed when the debugger is built in.
 683  * Note that this is entirely independent of whether the
 684  * DEBUG_PRINT stuff (set by ACPI_DEBUG_OUTPUT) is on, or not.
 685  */
 686 #ifdef ACPI_DEBUGGER
 687 #define ACPI_DEBUGGER_EXEC(a)           a
 688 #else
 689 #define ACPI_DEBUGGER_EXEC(a)
 690 #endif
 691
 692 /*
 693  * For 16-bit code, we want to shrink some things even though
 694  * we are using ACPI_DEBUG_OUTPUT to get the debug output
 695  */
 696 #if ACPI_MACHINE_WIDTH == 16
 697 #undef ACPI_DEBUG_ONLY_MEMBERS
 698 #undef _VERBOSE_STRUCTURES
 699 #define ACPI_DEBUG_ONLY_MEMBERS(a)
 700 #endif
 701
 702 #ifdef ACPI_DEBUG_OUTPUT
 703 /*
 704  * 1) Set name to blanks
 705  * 2) Copy the object name
 706  */
 707 #define ACPI_ADD_OBJECT_NAME(a,b)       ACPI_MEMSET (a->common.name, ' ', sizeof (a->common.name));\
 708                                                                                 ACPI_STRNCPY (a->common.name, acpi_gbl_ns_type_names[b], sizeof (a->common.name))
 709 #else
 710
 711 #define ACPI_ADD_OBJECT_NAME(a,b)
 712 #endif
 713
 714 /*
 715  * Memory allocation tracking (DEBUG ONLY)
 716  */
 717 #ifndef ACPI_DBG_TRACK_ALLOCATIONS
 718
 719 /* Memory allocation */
 720
 721 #define ACPI_ALLOCATE(a)            acpi_ut_allocate((acpi_size)(a),_COMPONENT,_acpi_module_name,__LINE__)
 722 #define ACPI_ALLOCATE_ZEROED(a)     acpi_ut_allocate_zeroed((acpi_size)(a), _COMPONENT,_acpi_module_name,__LINE__)
 723 #define ACPI_FREE(a)                acpi_os_free(a)
 724 #define ACPI_MEM_TRACKING(a)
 725
 726 #else
 727
 728 /* Memory allocation */
 729
 730 #define ACPI_ALLOCATE(a)            acpi_ut_allocate_and_track((acpi_size)(a),_COMPONENT,_acpi_module_name,__LINE__)
 731 #define ACPI_ALLOCATE_ZEROED(a)     acpi_ut_allocate_zeroed_and_track((acpi_size)(a), _COMPONENT,_acpi_module_name,__LINE__)
 732 #define ACPI_FREE(a)                acpi_ut_free_and_track(a,_COMPONENT,_acpi_module_name,__LINE__)
 733 #define ACPI_MEM_TRACKING(a)        a
 734
 735 #endif                          /* ACPI_DBG_TRACK_ALLOCATIONS */
 736
 737 #endif                          /* ACMACROS_H */