drivers/acpi/acpica/amlcode.h

   1 /******************************************************************************
   2  *
   3  * Name: amlcode.h - Definitions for AML, as included in "definition blocks"
   4  *                   Declarations and definitions contained herein are derived
   5  *                   directly from the ACPI specification.
   6  *
   7  *****************************************************************************/
   8
   9 /*
  10  * Copyright (C) 2000 - 2010, Intel Corp.
  11  * All rights reserved.
  12  *
  13  * Redistribution and use in source and binary forms, with or without
  14  * modification, are permitted provided that the following conditions
  15  * are met:
  16  * 1. Redistributions of source code must retain the above copyright
  17  *    notice, this list of conditions, and the following disclaimer,
  18  *    without modification.
  19  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  20  *    substantially similar to the "NO WARRANTY" disclaimer below
  21  *    ("Disclaimer") and any redistribution must be conditioned upon
  22  *    including a substantially similar Disclaimer requirement for further
  23  *    binary redistribution.
  24  * 3. Neither the names of the above-listed copyright holders nor the names
  25  *    of any contributors may be used to endorse or promote products derived
  26  *    from this software without specific prior written permission.
  27  *
  28  * Alternatively, this software may be distributed under the terms of the
  29  * GNU General Public License ("GPL") version 2 as published by the Free
  30  * Software Foundation.
  31  *
  32  * NO WARRANTY
  33  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  34  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  35  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  36  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  37  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  38  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  39  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  40  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  41  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  42  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  43  * POSSIBILITY OF SUCH DAMAGES.
  44  */
  45
  46 #ifndef __AMLCODE_H__
  47 #define __AMLCODE_H__
  48
  49 /* primary opcodes */
  50
  51 #define AML_NULL_CHAR               (u16) 0x00
  52
  53 #define AML_ZERO_OP                 (u16) 0x00
  54 #define AML_ONE_OP                  (u16) 0x01
  55 #define AML_UNASSIGNED              (u16) 0x02
  56 #define AML_ALIAS_OP                (u16) 0x06
  57 #define AML_NAME_OP                 (u16) 0x08
  58 #define AML_BYTE_OP                 (u16) 0x0a
  59 #define AML_WORD_OP                 (u16) 0x0b
  60 #define AML_DWORD_OP                (u16) 0x0c
  61 #define AML_STRING_OP               (u16) 0x0d
  62 #define AML_QWORD_OP                (u16) 0x0e  /* ACPI 2.0 */
  63 #define AML_SCOPE_OP                (u16) 0x10
  64 #define AML_BUFFER_OP               (u16) 0x11
  65 #define AML_PACKAGE_OP              (u16) 0x12
  66 #define AML_VAR_PACKAGE_OP          (u16) 0x13  /* ACPI 2.0 */
  67 #define AML_METHOD_OP               (u16) 0x14
  68 #define AML_DUAL_NAME_PREFIX        (u16) 0x2e
  69 #define AML_MULTI_NAME_PREFIX_OP    (u16) 0x2f
  70 #define AML_NAME_CHAR_SUBSEQ        (u16) 0x30
  71 #define AML_NAME_CHAR_FIRST         (u16) 0x41
  72 #define AML_EXTENDED_OP_PREFIX      (u16) 0x5b
  73 #define AML_ROOT_PREFIX             (u16) 0x5c
  74 #define AML_PARENT_PREFIX           (u16) 0x5e
  75 #define AML_LOCAL_OP                (u16) 0x60
  76 #define AML_LOCAL0                  (u16) 0x60
  77 #define AML_LOCAL1                  (u16) 0x61
  78 #define AML_LOCAL2                  (u16) 0x62
  79 #define AML_LOCAL3                  (u16) 0x63
  80 #define AML_LOCAL4                  (u16) 0x64
  81 #define AML_LOCAL5                  (u16) 0x65
  82 #define AML_LOCAL6                  (u16) 0x66
  83 #define AML_LOCAL7                  (u16) 0x67
  84 #define AML_ARG_OP                  (u16) 0x68
  85 #define AML_ARG0                    (u16) 0x68
  86 #define AML_ARG1                    (u16) 0x69
  87 #define AML_ARG2                    (u16) 0x6a
  88 #define AML_ARG3                    (u16) 0x6b
  89 #define AML_ARG4                    (u16) 0x6c
  90 #define AML_ARG5                    (u16) 0x6d
  91 #define AML_ARG6                    (u16) 0x6e
  92 #define AML_STORE_OP                (u16) 0x70
  93 #define AML_REF_OF_OP               (u16) 0x71
  94 #define AML_ADD_OP                  (u16) 0x72
  95 #define AML_CONCAT_OP               (u16) 0x73
  96 #define AML_SUBTRACT_OP             (u16) 0x74
  97 #define AML_INCREMENT_OP            (u16) 0x75
  98 #define AML_DECREMENT_OP            (u16) 0x76
  99 #define AML_MULTIPLY_OP             (u16) 0x77
 100 #define AML_DIVIDE_OP               (u16) 0x78
 101 #define AML_SHIFT_LEFT_OP           (u16) 0x79
 102 #define AML_SHIFT_RIGHT_OP          (u16) 0x7a
 103 #define AML_BIT_AND_OP              (u16) 0x7b
 104 #define AML_BIT_NAND_OP             (u16) 0x7c
 105 #define AML_BIT_OR_OP               (u16) 0x7d
 106 #define AML_BIT_NOR_OP              (u16) 0x7e
 107 #define AML_BIT_XOR_OP              (u16) 0x7f
 108 #define AML_BIT_NOT_OP              (u16) 0x80
 109 #define AML_FIND_SET_LEFT_BIT_OP    (u16) 0x81
 110 #define AML_FIND_SET_RIGHT_BIT_OP   (u16) 0x82
 111 #define AML_DEREF_OF_OP             (u16) 0x83
 112 #define AML_CONCAT_RES_OP           (u16) 0x84  /* ACPI 2.0 */
 113 #define AML_MOD_OP                  (u16) 0x85  /* ACPI 2.0 */
 114 #define AML_NOTIFY_OP               (u16) 0x86
 115 #define AML_SIZE_OF_OP              (u16) 0x87
 116 #define AML_INDEX_OP                (u16) 0x88
 117 #define AML_MATCH_OP                (u16) 0x89
 118 #define AML_CREATE_DWORD_FIELD_OP   (u16) 0x8a
 119 #define AML_CREATE_WORD_FIELD_OP    (u16) 0x8b
 120 #define AML_CREATE_BYTE_FIELD_OP    (u16) 0x8c
 121 #define AML_CREATE_BIT_FIELD_OP     (u16) 0x8d
 122 #define AML_TYPE_OP                 (u16) 0x8e
 123 #define AML_CREATE_QWORD_FIELD_OP   (u16) 0x8f  /* ACPI 2.0 */
 124 #define AML_LAND_OP                 (u16) 0x90
 125 #define AML_LOR_OP                  (u16) 0x91
 126 #define AML_LNOT_OP                 (u16) 0x92
 127 #define AML_LEQUAL_OP               (u16) 0x93
 128 #define AML_LGREATER_OP             (u16) 0x94
 129 #define AML_LLESS_OP                (u16) 0x95
 130 #define AML_TO_BUFFER_OP            (u16) 0x96  /* ACPI 2.0 */
 131 #define AML_TO_DECSTRING_OP         (u16) 0x97  /* ACPI 2.0 */
 132 #define AML_TO_HEXSTRING_OP         (u16) 0x98  /* ACPI 2.0 */
 133 #define AML_TO_INTEGER_OP           (u16) 0x99  /* ACPI 2.0 */
 134 #define AML_TO_STRING_OP            (u16) 0x9c  /* ACPI 2.0 */
 135 #define AML_COPY_OP                 (u16) 0x9d  /* ACPI 2.0 */
 136 #define AML_MID_OP                  (u16) 0x9e  /* ACPI 2.0 */
 137 #define AML_CONTINUE_OP             (u16) 0x9f  /* ACPI 2.0 */
 138 #define AML_IF_OP                   (u16) 0xa0
 139 #define AML_ELSE_OP                 (u16) 0xa1
 140 #define AML_WHILE_OP                (u16) 0xa2
 141 #define AML_NOOP_OP                 (u16) 0xa3
 142 #define AML_RETURN_OP               (u16) 0xa4
 143 #define AML_BREAK_OP                (u16) 0xa5
 144 #define AML_BREAK_POINT_OP          (u16) 0xcc
 145 #define AML_ONES_OP                 (u16) 0xff
 146
 147 /* prefixed opcodes */
 148
 149 #define AML_EXTENDED_OPCODE         (u16) 0x5b00        /* prefix for 2-byte opcodes */
 150
 151 #define AML_MUTEX_OP                (u16) 0x5b01
 152 #define AML_EVENT_OP                (u16) 0x5b02
 153 #define AML_SHIFT_RIGHT_BIT_OP      (u16) 0x5b10
 154 #define AML_SHIFT_LEFT_BIT_OP       (u16) 0x5b11
 155 #define AML_COND_REF_OF_OP          (u16) 0x5b12
 156 #define AML_CREATE_FIELD_OP         (u16) 0x5b13
 157 #define AML_LOAD_TABLE_OP           (u16) 0x5b1f        /* ACPI 2.0 */
 158 #define AML_LOAD_OP                 (u16) 0x5b20
 159 #define AML_STALL_OP                (u16) 0x5b21
 160 #define AML_SLEEP_OP                (u16) 0x5b22
 161 #define AML_ACQUIRE_OP              (u16) 0x5b23
 162 #define AML_SIGNAL_OP               (u16) 0x5b24
 163 #define AML_WAIT_OP                 (u16) 0x5b25
 164 #define AML_RESET_OP                (u16) 0x5b26
 165 #define AML_RELEASE_OP              (u16) 0x5b27
 166 #define AML_FROM_BCD_OP             (u16) 0x5b28
 167 #define AML_TO_BCD_OP               (u16) 0x5b29
 168 #define AML_UNLOAD_OP               (u16) 0x5b2a
 169 #define AML_REVISION_OP             (u16) 0x5b30
 170 #define AML_DEBUG_OP                (u16) 0x5b31
 171 #define AML_FATAL_OP                (u16) 0x5b32
 172 #define AML_TIMER_OP                (u16) 0x5b33        /* ACPI 3.0 */
 173 #define AML_REGION_OP               (u16) 0x5b80
 174 #define AML_FIELD_OP                (u16) 0x5b81
 175 #define AML_DEVICE_OP               (u16) 0x5b82
 176 #define AML_PROCESSOR_OP            (u16) 0x5b83
 177 #define AML_POWER_RES_OP            (u16) 0x5b84
 178 #define AML_THERMAL_ZONE_OP         (u16) 0x5b85
 179 #define AML_INDEX_FIELD_OP          (u16) 0x5b86
 180 #define AML_BANK_FIELD_OP           (u16) 0x5b87
 181 #define AML_DATA_REGION_OP          (u16) 0x5b88        /* ACPI 2.0 */
 182
 183 /*
 184  * Combination opcodes (actually two one-byte opcodes)
 185  * Used by the disassembler and i_aSL compiler
 186  */
 187 #define AML_LGREATEREQUAL_OP        (u16) 0x9295
 188 #define AML_LLESSEQUAL_OP           (u16) 0x9294
 189 #define AML_LNOTEQUAL_OP            (u16) 0x9293
 190
 191 /*
 192  * Internal opcodes
 193  * Use only "Unknown" AML opcodes, don't attempt to use
 194  * any valid ACPI ASCII values (A-Z, 0-9, '-')
 195  */
 196 #define AML_INT_NAMEPATH_OP         (u16) 0x002d
 197 #define AML_INT_NAMEDFIELD_OP       (u16) 0x0030
 198 #define AML_INT_RESERVEDFIELD_OP    (u16) 0x0031
 199 #define AML_INT_ACCESSFIELD_OP      (u16) 0x0032
 200 #define AML_INT_BYTELIST_OP         (u16) 0x0033
 201 #define AML_INT_STATICSTRING_OP     (u16) 0x0034
 202 #define AML_INT_METHODCALL_OP       (u16) 0x0035
 203 #define AML_INT_RETURN_VALUE_OP     (u16) 0x0036
 204 #define AML_INT_EVAL_SUBTREE_OP     (u16) 0x0037
 205
 206 #define ARG_NONE                    0x0
 207
 208 /*
 209  * Argument types for the AML Parser
 210  * Each field in the arg_types u32 is 5 bits, allowing for a maximum of 6 arguments.
 211  * There can be up to 31 unique argument types
 212  * Zero is reserved as end-of-list indicator
 213  */
 214 #define ARGP_BYTEDATA               0x01
 215 #define ARGP_BYTELIST               0x02
 216 #define ARGP_CHARLIST               0x03
 217 #define ARGP_DATAOBJ                0x04
 218 #define ARGP_DATAOBJLIST            0x05
 219 #define ARGP_DWORDDATA              0x06
 220 #define ARGP_FIELDLIST              0x07
 221 #define ARGP_NAME                   0x08
 222 #define ARGP_NAMESTRING             0x09
 223 #define ARGP_OBJLIST                0x0A
 224 #define ARGP_PKGLENGTH              0x0B
 225 #define ARGP_SUPERNAME              0x0C
 226 #define ARGP_TARGET                 0x0D
 227 #define ARGP_TERMARG                0x0E
 228 #define ARGP_TERMLIST               0x0F
 229 #define ARGP_WORDDATA               0x10
 230 #define ARGP_QWORDDATA              0x11
 231 #define ARGP_SIMPLENAME             0x12
 232
 233 /*
 234  * Resolved argument types for the AML Interpreter
 235  * Each field in the arg_types u32 is 5 bits, allowing for a maximum of 6 arguments.
 236  * There can be up to 31 unique argument types (0 is end-of-arg-list indicator)
 237  *
 238  * Note1: These values are completely independent from the ACPI_TYPEs
 239  *        i.e., ARGI_INTEGER != ACPI_TYPE_INTEGER
 240  *
 241  * Note2: If and when 5 bits becomes insufficient, it would probably be best
 242  * to convert to a 6-byte array of argument types, allowing 8 bits per argument.
 243  */
 244
 245 /* Single, simple types */
 246
 247 #define ARGI_ANYTYPE                0x01        /* Don't care */
 248 #define ARGI_PACKAGE                0x02
 249 #define ARGI_EVENT                  0x03
 250 #define ARGI_MUTEX                  0x04
 251 #define ARGI_DDBHANDLE              0x05
 252
 253 /* Interchangeable types (via implicit conversion) */
 254
 255 #define ARGI_INTEGER                0x06
 256 #define ARGI_STRING                 0x07
 257 #define ARGI_BUFFER                 0x08
 258 #define ARGI_BUFFER_OR_STRING       0x09        /* Used by MID op only */
 259 #define ARGI_COMPUTEDATA            0x0A        /* Buffer, String, or Integer */
 260
 261 /* Reference objects */
 262
 263 #define ARGI_INTEGER_REF            0x0B
 264 #define ARGI_OBJECT_REF             0x0C
 265 #define ARGI_DEVICE_REF             0x0D
 266 #define ARGI_REFERENCE              0x0E
 267 #define ARGI_TARGETREF              0x0F        /* Target, subject to implicit conversion */
 268 #define ARGI_FIXED_TARGET           0x10        /* Target, no implicit conversion */
 269 #define ARGI_SIMPLE_TARGET          0x11        /* Name, Local, Arg -- no implicit conversion */
 270
 271 /* Multiple/complex types */
 272
 273 #define ARGI_DATAOBJECT             0x12        /* Buffer, String, package or reference to a Node - Used only by size_of operator */
 274 #define ARGI_COMPLEXOBJ             0x13        /* Buffer, String, or package (Used by INDEX op only) */
 275 #define ARGI_REF_OR_STRING          0x14        /* Reference or String (Used by DEREFOF op only) */
 276 #define ARGI_REGION_OR_BUFFER       0x15        /* Used by LOAD op only */
 277 #define ARGI_DATAREFOBJ             0x16
 278
 279 /* Note: types above can expand to 0x1F maximum */
 280
 281 #define ARGI_INVALID_OPCODE         0xFFFFFFFF
 282
 283 /*
 284  * hash offsets
 285  */
 286 #define AML_EXTOP_HASH_OFFSET       22
 287 #define AML_LNOT_HASH_OFFSET        19
 288
 289 /*
 290  * opcode groups and types
 291  */
 292 #define OPGRP_NAMED                 0x01
 293 #define OPGRP_FIELD                 0x02
 294 #define OPGRP_BYTELIST              0x04
 295
 296 /*
 297  * Opcode information
 298  */
 299
 300 /* Opcode flags */
 301
 302 #define AML_LOGICAL                 0x0001
 303 #define AML_LOGICAL_NUMERIC         0x0002
 304 #define AML_MATH                    0x0004
 305 #define AML_CREATE                  0x0008
 306 #define AML_FIELD                   0x0010
 307 #define AML_DEFER                   0x0020
 308 #define AML_NAMED                   0x0040
 309 #define AML_NSNODE                  0x0080
 310 #define AML_NSOPCODE                0x0100
 311 #define AML_NSOBJECT                0x0200
 312 #define AML_HAS_RETVAL              0x0400
 313 #define AML_HAS_TARGET              0x0800
 314 #define AML_HAS_ARGS                0x1000
 315 #define AML_CONSTANT                0x2000
 316 #define AML_NO_OPERAND_RESOLVE      0x4000
 317
 318 /* Convenient flag groupings */
 319
 320 #define AML_FLAGS_EXEC_0A_0T_1R                                     AML_HAS_RETVAL
 321 #define AML_FLAGS_EXEC_1A_0T_0R     AML_HAS_ARGS        /* Monadic1  */
 322 #define AML_FLAGS_EXEC_1A_0T_1R     AML_HAS_ARGS |                  AML_HAS_RETVAL      /* Monadic2  */
 323 #define AML_FLAGS_EXEC_1A_1T_0R     AML_HAS_ARGS | AML_HAS_TARGET
 324 #define AML_FLAGS_EXEC_1A_1T_1R     AML_HAS_ARGS | AML_HAS_TARGET | AML_HAS_RETVAL      /* monadic2_r */
 325 #define AML_FLAGS_EXEC_2A_0T_0R     AML_HAS_ARGS        /* Dyadic1   */
 326 #define AML_FLAGS_EXEC_2A_0T_1R     AML_HAS_ARGS |                  AML_HAS_RETVAL      /* Dyadic2   */
 327 #define AML_FLAGS_EXEC_2A_1T_1R     AML_HAS_ARGS | AML_HAS_TARGET | AML_HAS_RETVAL      /* dyadic2_r  */
 328 #define AML_FLAGS_EXEC_2A_2T_1R     AML_HAS_ARGS | AML_HAS_TARGET | AML_HAS_RETVAL
 329 #define AML_FLAGS_EXEC_3A_0T_0R     AML_HAS_ARGS
 330 #define AML_FLAGS_EXEC_3A_1T_1R     AML_HAS_ARGS | AML_HAS_TARGET | AML_HAS_RETVAL
 331 #define AML_FLAGS_EXEC_6A_0T_1R     AML_HAS_ARGS |                  AML_HAS_RETVAL
 332
 333 /*
 334  * The opcode Type is used in a dispatch table, do not change
 335  * without updating the table.
 336  */
 337 #define AML_TYPE_EXEC_0A_0T_1R      0x00
 338 #define AML_TYPE_EXEC_1A_0T_0R      0x01        /* Monadic1  */
 339 #define AML_TYPE_EXEC_1A_0T_1R      0x02        /* Monadic2  */
 340 #define AML_TYPE_EXEC_1A_1T_0R      0x03
 341 #define AML_TYPE_EXEC_1A_1T_1R      0x04        /* monadic2_r */
 342 #define AML_TYPE_EXEC_2A_0T_0R      0x05        /* Dyadic1   */
 343 #define AML_TYPE_EXEC_2A_0T_1R      0x06        /* Dyadic2   */
 344 #define AML_TYPE_EXEC_2A_1T_1R      0x07        /* dyadic2_r  */
 345 #define AML_TYPE_EXEC_2A_2T_1R      0x08
 346 #define AML_TYPE_EXEC_3A_0T_0R      0x09
 347 #define AML_TYPE_EXEC_3A_1T_1R      0x0A
 348 #define AML_TYPE_EXEC_6A_0T_1R      0x0B
 349 /* End of types used in dispatch table */
 350
 351 #define AML_TYPE_LITERAL            0x0B
 352 #define AML_TYPE_CONSTANT           0x0C
 353 #define AML_TYPE_METHOD_ARGUMENT    0x0D
 354 #define AML_TYPE_LOCAL_VARIABLE     0x0E
 355 #define AML_TYPE_DATA_TERM          0x0F
 356
 357 /* Generic for an op that returns a value */
 358
 359 #define AML_TYPE_METHOD_CALL        0x10
 360
 361 /* Misc */
 362
 363 #define AML_TYPE_CREATE_FIELD       0x11
 364 #define AML_TYPE_CREATE_OBJECT      0x12
 365 #define AML_TYPE_CONTROL            0x13
 366 #define AML_TYPE_NAMED_NO_OBJ       0x14
 367 #define AML_TYPE_NAMED_FIELD        0x15
 368 #define AML_TYPE_NAMED_SIMPLE       0x16
 369 #define AML_TYPE_NAMED_COMPLEX      0x17
 370 #define AML_TYPE_RETURN             0x18
 371
 372 #define AML_TYPE_UNDEFINED          0x19
 373 #define AML_TYPE_BOGUS              0x1A
 374
 375 /* AML Package Length encodings */
 376
 377 #define ACPI_AML_PACKAGE_TYPE1      0x40
 378 #define ACPI_AML_PACKAGE_TYPE2      0x4000
 379 #define ACPI_AML_PACKAGE_TYPE3      0x400000
 380 #define ACPI_AML_PACKAGE_TYPE4      0x40000000
 381
 382 /*
 383  * Opcode classes
 384  */
 385 #define AML_CLASS_EXECUTE           0x00
 386 #define AML_CLASS_CREATE            0x01
 387 #define AML_CLASS_ARGUMENT          0x02
 388 #define AML_CLASS_NAMED_OBJECT      0x03
 389 #define AML_CLASS_CONTROL           0x04
 390 #define AML_CLASS_ASCII             0x05
 391 #define AML_CLASS_PREFIX            0x06
 392 #define AML_CLASS_INTERNAL          0x07
 393 #define AML_CLASS_RETURN_VALUE      0x08
 394 #define AML_CLASS_METHOD_CALL       0x09
 395 #define AML_CLASS_UNKNOWN           0x0A
 396
 397 /* Predefined Operation Region space_iDs */
 398
 399 typedef enum {
 400         REGION_MEMORY = 0,
 401         REGION_IO,
 402         REGION_PCI_CONFIG,
 403         REGION_EC,
 404         REGION_SMBUS,
 405         REGION_CMOS,
 406         REGION_PCI_BAR,
 407         REGION_IPMI,
 408         REGION_DATA_TABLE,      /* Internal use only */
 409         REGION_FIXED_HW = 0x7F
 410 } AML_REGION_TYPES;
 411
 412 /* Comparison operation codes for match_op operator */
 413
 414 typedef enum {
 415         MATCH_MTR = 0,
 416         MATCH_MEQ = 1,
 417         MATCH_MLE = 2,
 418         MATCH_MLT = 3,
 419         MATCH_MGE = 4,
 420         MATCH_MGT = 5
 421 } AML_MATCH_OPERATOR;
 422
 423 #define MAX_MATCH_OPERATOR          5
 424
 425 /*
 426  * field_flags
 427  *
 428  * This byte is extracted from the AML and includes three separate
 429  * pieces of information about the field:
 430  * 1) The field access type
 431  * 2) The field update rule
 432  * 3) The lock rule for the field
 433  *
 434  * Bits 00 - 03 : access_type (any_acc, byte_acc, etc.)
 435  *      04      : lock_rule (1 == Lock)
 436  *      05 - 06 : update_rule
 437  */
 438 #define AML_FIELD_ACCESS_TYPE_MASK  0x0F
 439 #define AML_FIELD_LOCK_RULE_MASK    0x10
 440 #define AML_FIELD_UPDATE_RULE_MASK  0x60
 441
 442 /* 1) Field Access Types */
 443
 444 typedef enum {
 445         AML_FIELD_ACCESS_ANY = 0x00,
 446         AML_FIELD_ACCESS_BYTE = 0x01,
 447         AML_FIELD_ACCESS_WORD = 0x02,
 448         AML_FIELD_ACCESS_DWORD = 0x03,
 449         AML_FIELD_ACCESS_QWORD = 0x04,  /* ACPI 2.0 */
 450         AML_FIELD_ACCESS_BUFFER = 0x05  /* ACPI 2.0 */
 451 } AML_ACCESS_TYPE;
 452
 453 /* 2) Field Lock Rules */
 454
 455 typedef enum {
 456         AML_FIELD_LOCK_NEVER = 0x00,
 457         AML_FIELD_LOCK_ALWAYS = 0x10
 458 } AML_LOCK_RULE;
 459
 460 /* 3) Field Update Rules */
 461
 462 typedef enum {
 463         AML_FIELD_UPDATE_PRESERVE = 0x00,
 464         AML_FIELD_UPDATE_WRITE_AS_ONES = 0x20,
 465         AML_FIELD_UPDATE_WRITE_AS_ZEROS = 0x40
 466 } AML_UPDATE_RULE;
 467
 468 /*
 469  * Field Access Attributes.
 470  * This byte is extracted from the AML via the
 471  * access_as keyword
 472  */
 473 typedef enum {
 474         AML_FIELD_ATTRIB_SMB_QUICK = 0x02,
 475         AML_FIELD_ATTRIB_SMB_SEND_RCV = 0x04,
 476         AML_FIELD_ATTRIB_SMB_BYTE = 0x06,
 477         AML_FIELD_ATTRIB_SMB_WORD = 0x08,
 478         AML_FIELD_ATTRIB_SMB_BLOCK = 0x0A,
 479         AML_FIELD_ATTRIB_SMB_WORD_CALL = 0x0C,
 480         AML_FIELD_ATTRIB_SMB_BLOCK_CALL = 0x0D
 481 } AML_ACCESS_ATTRIBUTE;
 482
 483 /* Bit fields in method_flags byte */
 484
 485 #define AML_METHOD_ARG_COUNT        0x07
 486 #define AML_METHOD_SERIALIZED       0x08
 487 #define AML_METHOD_SYNC_LEVEL       0xF0
 488
 489 /* METHOD_FLAGS_ARG_COUNT is not used internally, define additional flags */
 490
 491 #define AML_METHOD_INTERNAL_ONLY    0x01
 492 #define AML_METHOD_RESERVED1        0x02
 493 #define AML_METHOD_RESERVED2        0x04
 494
 495 #endif                          /* __AMLCODE_H__ */