drivers/acpi/acpica/psopinfo.c

   1 /******************************************************************************
   2  *
   3  * Module Name: psopinfo - AML opcode information functions and dispatch tables
   4  *
   5  *****************************************************************************/
   6
   7 /*
   8  * Copyright (C) 2000 - 2015, Intel Corp.
   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 #include <acpi/acpi.h>
  45 #include "accommon.h"
  46 #include "acparser.h"
  47 #include "acopcode.h"
  48 #include "amlcode.h"
  49
  50 #define _COMPONENT          ACPI_PARSER
  51 ACPI_MODULE_NAME("psopinfo")
  52
  53 static const u8 acpi_gbl_argument_count[] =
  54     { 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 6 };
  55
  56 /*******************************************************************************
  57  *
  58  * FUNCTION:    acpi_ps_get_opcode_info
  59  *
  60  * PARAMETERS:  opcode              - The AML opcode
  61  *
  62  * RETURN:      A pointer to the info about the opcode.
  63  *
  64  * DESCRIPTION: Find AML opcode description based on the opcode.
  65  *              NOTE: This procedure must ALWAYS return a valid pointer!
  66  *
  67  ******************************************************************************/
  68
  69 const struct acpi_opcode_info *acpi_ps_get_opcode_info(u16 opcode)
  70 {
  71 #ifdef ACPI_DEBUG_OUTPUT
  72         const char *opcode_name = "Unknown AML opcode";
  73 #endif
  74
  75         ACPI_FUNCTION_NAME(ps_get_opcode_info);
  76
  77         /*
  78          * Detect normal 8-bit opcode or extended 16-bit opcode
  79          */
  80         if (!(opcode & 0xFF00)) {
  81
  82                 /* Simple (8-bit) opcode: 0-255, can't index beyond table  */
  83
  84                 return (&acpi_gbl_aml_op_info
  85                         [acpi_gbl_short_op_index[(u8)opcode]]);
  86         }
  87
  88         if (((opcode & 0xFF00) == AML_EXTENDED_OPCODE) &&
  89             (((u8)opcode) <= MAX_EXTENDED_OPCODE)) {
  90
  91                 /* Valid extended (16-bit) opcode */
  92
  93                 return (&acpi_gbl_aml_op_info
  94                         [acpi_gbl_long_op_index[(u8)opcode]]);
  95         }
  96 #if defined ACPI_ASL_COMPILER && defined ACPI_DEBUG_OUTPUT
  97 #include "asldefine.h"
  98
  99         switch (opcode) {
 100         case AML_RAW_DATA_BYTE:
 101                 opcode_name = "-Raw Data Byte-";
 102                 break;
 103
 104         case AML_RAW_DATA_WORD:
 105                 opcode_name = "-Raw Data Word-";
 106                 break;
 107
 108         case AML_RAW_DATA_DWORD:
 109                 opcode_name = "-Raw Data Dword-";
 110                 break;
 111
 112         case AML_RAW_DATA_QWORD:
 113                 opcode_name = "-Raw Data Qword-";
 114                 break;
 115
 116         case AML_RAW_DATA_BUFFER:
 117                 opcode_name = "-Raw Data Buffer-";
 118                 break;
 119
 120         case AML_RAW_DATA_CHAIN:
 121                 opcode_name = "-Raw Data Buffer Chain-";
 122                 break;
 123
 124         case AML_PACKAGE_LENGTH:
 125                 opcode_name = "-Package Length-";
 126                 break;
 127
 128         case AML_UNASSIGNED_OPCODE:
 129                 opcode_name = "-Unassigned Opcode-";
 130                 break;
 131
 132         case AML_DEFAULT_ARG_OP:
 133                 opcode_name = "-Default Arg-";
 134                 break;
 135
 136         default:
 137                 break;
 138         }
 139 #endif
 140
 141         /* Unknown AML opcode */
 142
 143         ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "%s [%4.4X]\n", opcode_name, opcode));
 144
 145         return (&acpi_gbl_aml_op_info[_UNK]);
 146 }
 147
 148 /*******************************************************************************
 149  *
 150  * FUNCTION:    acpi_ps_get_opcode_name
 151  *
 152  * PARAMETERS:  opcode              - The AML opcode
 153  *
 154  * RETURN:      A pointer to the name of the opcode (ASCII String)
 155  *              Note: Never returns NULL.
 156  *
 157  * DESCRIPTION: Translate an opcode into a human-readable string
 158  *
 159  ******************************************************************************/
 160
 161 char *acpi_ps_get_opcode_name(u16 opcode)
 162 {
 163 #if defined(ACPI_DISASSEMBLER) || defined (ACPI_DEBUG_OUTPUT)
 164
 165         const struct acpi_opcode_info *op;
 166
 167         op = acpi_ps_get_opcode_info(opcode);
 168
 169         /* Always guaranteed to return a valid pointer */
 170
 171         return (op->name);
 172
 173 #else
 174         return ("OpcodeName unavailable");
 175
 176 #endif
 177 }
 178
 179 /*******************************************************************************
 180  *
 181  * FUNCTION:    acpi_ps_get_argument_count
 182  *
 183  * PARAMETERS:  op_type             - Type associated with the AML opcode
 184  *
 185  * RETURN:      Argument count
 186  *
 187  * DESCRIPTION: Obtain the number of expected arguments for an AML opcode
 188  *
 189  ******************************************************************************/
 190
 191 u8 acpi_ps_get_argument_count(u32 op_type)
 192 {
 193
 194         if (op_type <= AML_TYPE_EXEC_6A_0T_1R) {
 195                 return (acpi_gbl_argument_count[op_type]);
 196         }
 197
 198         return (0);
 199 }
 200
 201 /*
 202  * This table is directly indexed by the opcodes It returns
 203  * an index into the opcode table (acpi_gbl_aml_op_info)
 204  */
 205 const u8 acpi_gbl_short_op_index[256] = {
 206 /*              0     1     2     3     4     5     6     7  */
 207 /*              8     9     A     B     C     D     E     F  */
 208 /* 0x00 */ 0x00, 0x01, _UNK, _UNK, _UNK, _UNK, 0x02, _UNK,
 209 /* 0x08 */ 0x03, _UNK, 0x04, 0x05, 0x06, 0x07, 0x6E, _UNK,
 210 /* 0x10 */ 0x08, 0x09, 0x0a, 0x6F, 0x0b, 0x81, _UNK, _UNK,
 211 /* 0x18 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 212 /* 0x20 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 213 /* 0x28 */ _UNK, _UNK, _UNK, _UNK, _UNK, 0x63, _PFX, _PFX,
 214 /* 0x30 */ 0x67, 0x66, 0x68, 0x65, 0x69, 0x64, 0x6A, 0x7D,
 215 /* 0x38 */ 0x7F, 0x80, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 216 /* 0x40 */ _UNK, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC,
 217 /* 0x48 */ _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC,
 218 /* 0x50 */ _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC, _ASC,
 219 /* 0x58 */ _ASC, _ASC, _ASC, _UNK, _PFX, _UNK, _PFX, _ASC,
 220 /* 0x60 */ 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13,
 221 /* 0x68 */ 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, _UNK,
 222 /* 0x70 */ 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22,
 223 /* 0x78 */ 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a,
 224 /* 0x80 */ 0x2b, 0x2c, 0x2d, 0x2e, 0x70, 0x71, 0x2f, 0x30,
 225 /* 0x88 */ 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x72,
 226 /* 0x90 */ 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x73, 0x74,
 227 /* 0x98 */ 0x75, 0x76, _UNK, _UNK, 0x77, 0x78, 0x79, 0x7A,
 228 /* 0xA0 */ 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x60, 0x61,
 229 /* 0xA8 */ 0x62, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 230 /* 0xB0 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 231 /* 0xB8 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 232 /* 0xC0 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 233 /* 0xC8 */ _UNK, _UNK, _UNK, _UNK, 0x44, _UNK, _UNK, _UNK,
 234 /* 0xD0 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 235 /* 0xD8 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 236 /* 0xE0 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 237 /* 0xE8 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 238 /* 0xF0 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 239 /* 0xF8 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 0x45,
 240 };
 241
 242 /*
 243  * This table is indexed by the second opcode of the extended opcode
 244  * pair. It returns an index into the opcode table (acpi_gbl_aml_op_info)
 245  */
 246 const u8 acpi_gbl_long_op_index[NUM_EXTENDED_OPCODE] = {
 247 /*              0     1     2     3     4     5     6     7  */
 248 /*              8     9     A     B     C     D     E     F  */
 249 /* 0x00 */ _UNK, 0x46, 0x47, _UNK, _UNK, _UNK, _UNK, _UNK,
 250 /* 0x08 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 251 /* 0x10 */ _UNK, _UNK, 0x48, 0x49, _UNK, _UNK, _UNK, _UNK,
 252 /* 0x18 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, 0x7B,
 253 /* 0x20 */ 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51,
 254 /* 0x28 */ 0x52, 0x53, 0x54, _UNK, _UNK, _UNK, _UNK, _UNK,
 255 /* 0x30 */ 0x55, 0x56, 0x57, 0x7e, _UNK, _UNK, _UNK, _UNK,
 256 /* 0x38 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 257 /* 0x40 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 258 /* 0x48 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 259 /* 0x50 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 260 /* 0x58 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 261 /* 0x60 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 262 /* 0x68 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 263 /* 0x70 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 264 /* 0x78 */ _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK, _UNK,
 265 /* 0x80 */ 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
 266 /* 0x88 */ 0x7C,
 267 };