Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /****************************************************************************** |
| 2 | * |
| 3 | * Module Name: exoparg2 - AML execution - opcodes with 2 arguments |
| 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <acpi/acpi.h> |
| 45 | #include <acpi/acparser.h> |
| 46 | #include <acpi/acinterp.h> |
| 47 | #include <acpi/acevents.h> |
| 48 | #include <acpi/amlcode.h> |
| 49 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | #define _COMPONENT ACPI_EXECUTER |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 51 | ACPI_MODULE_NAME("exoparg2") |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
| 53 | /*! |
| 54 | * Naming convention for AML interpreter execution routines. |
| 55 | * |
| 56 | * The routines that begin execution of AML opcodes are named with a common |
| 57 | * convention based upon the number of arguments, the number of target operands, |
| 58 | * and whether or not a value is returned: |
| 59 | * |
| 60 | * AcpiExOpcode_xA_yT_zR |
| 61 | * |
| 62 | * Where: |
| 63 | * |
| 64 | * xA - ARGUMENTS: The number of arguments (input operands) that are |
| 65 | * required for this opcode type (1 through 6 args). |
| 66 | * yT - TARGETS: The number of targets (output operands) that are required |
| 67 | * for this opcode type (0, 1, or 2 targets). |
| 68 | * zR - RETURN VALUE: Indicates whether this opcode type returns a value |
| 69 | * as the function return (0 or 1). |
| 70 | * |
| 71 | * The AcpiExOpcode* functions are called via the Dispatcher component with |
| 72 | * fully resolved operands. |
| 73 | !*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | /******************************************************************************* |
| 75 | * |
| 76 | * FUNCTION: acpi_ex_opcode_2A_0T_0R |
| 77 | * |
| 78 | * PARAMETERS: walk_state - Current walk state |
| 79 | * |
| 80 | * RETURN: Status |
| 81 | * |
| 82 | * DESCRIPTION: Execute opcode with two arguments, no target, and no return |
| 83 | * value. |
| 84 | * |
| 85 | * ALLOCATION: Deletes both operands |
| 86 | * |
| 87 | ******************************************************************************/ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 88 | acpi_status acpi_ex_opcode_2A_0T_0R(struct acpi_walk_state *walk_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 90 | union acpi_operand_object **operand = &walk_state->operands[0]; |
| 91 | struct acpi_namespace_node *node; |
| 92 | u32 value; |
| 93 | acpi_status status = AE_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 95 | ACPI_FUNCTION_TRACE_STR("ex_opcode_2A_0T_0R", |
| 96 | acpi_ps_get_opcode_name(walk_state->opcode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | |
| 98 | /* Examine the opcode */ |
| 99 | |
| 100 | switch (walk_state->opcode) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 101 | case AML_NOTIFY_OP: /* Notify (notify_object, notify_value) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | |
| 103 | /* The first operand is a namespace node */ |
| 104 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 105 | node = (struct acpi_namespace_node *)operand[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | |
| 107 | /* Second value is the notify value */ |
| 108 | |
| 109 | value = (u32) operand[1]->integer.value; |
| 110 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 111 | /* Are notifies allowed on this object? */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 113 | if (!acpi_ev_is_notify_object(node)) { |
| 114 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 115 | "Unexpected notify object type [%s]\n", |
| 116 | acpi_ut_get_type_name(node->type))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 117 | |
| 118 | status = AE_AML_OPERAND_TYPE; |
| 119 | break; |
| 120 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | #ifdef ACPI_GPE_NOTIFY_CHECK |
| 122 | /* |
| 123 | * GPE method wake/notify check. Here, we want to ensure that we |
| 124 | * don't receive any "device_wake" Notifies from a GPE _Lxx or _Exx |
| 125 | * GPE method during system runtime. If we do, the GPE is marked |
| 126 | * as "wake-only" and disabled. |
| 127 | * |
| 128 | * 1) Is the Notify() value == device_wake? |
| 129 | * 2) Is this a GPE deferred method? (An _Lxx or _Exx method) |
| 130 | * 3) Did the original GPE happen at system runtime? |
| 131 | * (versus during wake) |
| 132 | * |
| 133 | * If all three cases are true, this is a wake-only GPE that should |
| 134 | * be disabled at runtime. |
| 135 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 136 | if (value == 2) { /* device_wake */ |
| 137 | status = |
| 138 | acpi_ev_check_for_wake_only_gpe(walk_state-> |
| 139 | gpe_event_info); |
| 140 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | /* AE_WAKE_ONLY_GPE only error, means ignore this notify */ |
| 142 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 143 | return_ACPI_STATUS(AE_OK) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | } |
| 145 | } |
| 146 | #endif |
| 147 | |
| 148 | /* |
| 149 | * Dispatch the notify to the appropriate handler |
| 150 | * NOTE: the request is queued for execution after this method |
| 151 | * completes. The notify handlers are NOT invoked synchronously |
| 152 | * from this thread -- because handlers may in turn run other |
| 153 | * control methods. |
| 154 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 155 | status = acpi_ev_queue_notify_request(node, value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | break; |
| 157 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | default: |
| 159 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 160 | ACPI_REPORT_ERROR(("acpi_ex_opcode_2A_0T_0R: Unknown opcode %X\n", walk_state->opcode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | status = AE_AML_BAD_OPCODE; |
| 162 | } |
| 163 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 164 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | } |
| 166 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | /******************************************************************************* |
| 168 | * |
| 169 | * FUNCTION: acpi_ex_opcode_2A_2T_1R |
| 170 | * |
| 171 | * PARAMETERS: walk_state - Current walk state |
| 172 | * |
| 173 | * RETURN: Status |
| 174 | * |
| 175 | * DESCRIPTION: Execute a dyadic operator (2 operands) with 2 output targets |
| 176 | * and one implicit return value. |
| 177 | * |
| 178 | ******************************************************************************/ |
| 179 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 180 | acpi_status acpi_ex_opcode_2A_2T_1R(struct acpi_walk_state *walk_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 182 | union acpi_operand_object **operand = &walk_state->operands[0]; |
| 183 | union acpi_operand_object *return_desc1 = NULL; |
| 184 | union acpi_operand_object *return_desc2 = NULL; |
| 185 | acpi_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 187 | ACPI_FUNCTION_TRACE_STR("ex_opcode_2A_2T_1R", |
| 188 | acpi_ps_get_opcode_name(walk_state->opcode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 190 | /* Execute the opcode */ |
| 191 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | switch (walk_state->opcode) { |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 193 | case AML_DIVIDE_OP: |
| 194 | |
| 195 | /* Divide (Dividend, Divisor, remainder_result quotient_result) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 197 | return_desc1 = |
| 198 | acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | if (!return_desc1) { |
| 200 | status = AE_NO_MEMORY; |
| 201 | goto cleanup; |
| 202 | } |
| 203 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 204 | return_desc2 = |
| 205 | acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | if (!return_desc2) { |
| 207 | status = AE_NO_MEMORY; |
| 208 | goto cleanup; |
| 209 | } |
| 210 | |
| 211 | /* Quotient to return_desc1, remainder to return_desc2 */ |
| 212 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 213 | status = acpi_ut_divide(operand[0]->integer.value, |
| 214 | operand[1]->integer.value, |
| 215 | &return_desc1->integer.value, |
| 216 | &return_desc2->integer.value); |
| 217 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | goto cleanup; |
| 219 | } |
| 220 | break; |
| 221 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | default: |
| 223 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 224 | ACPI_REPORT_ERROR(("acpi_ex_opcode_2A_2T_1R: Unknown opcode %X\n", walk_state->opcode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | status = AE_AML_BAD_OPCODE; |
| 226 | goto cleanup; |
| 227 | } |
| 228 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | /* Store the results to the target reference operands */ |
| 230 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 231 | status = acpi_ex_store(return_desc2, operand[2], walk_state); |
| 232 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | goto cleanup; |
| 234 | } |
| 235 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 236 | status = acpi_ex_store(return_desc1, operand[3], walk_state); |
| 237 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | goto cleanup; |
| 239 | } |
| 240 | |
| 241 | /* Return the remainder */ |
| 242 | |
| 243 | walk_state->result_obj = return_desc1; |
| 244 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 245 | cleanup: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | /* |
| 247 | * Since the remainder is not returned indirectly, remove a reference to |
| 248 | * it. Only the quotient is returned indirectly. |
| 249 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 250 | acpi_ut_remove_reference(return_desc2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 252 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | /* Delete the return object */ |
| 254 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 255 | acpi_ut_remove_reference(return_desc1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | } |
| 257 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 258 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | } |
| 260 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | /******************************************************************************* |
| 262 | * |
| 263 | * FUNCTION: acpi_ex_opcode_2A_1T_1R |
| 264 | * |
| 265 | * PARAMETERS: walk_state - Current walk state |
| 266 | * |
| 267 | * RETURN: Status |
| 268 | * |
| 269 | * DESCRIPTION: Execute opcode with two arguments, one target, and a return |
| 270 | * value. |
| 271 | * |
| 272 | ******************************************************************************/ |
| 273 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 274 | acpi_status acpi_ex_opcode_2A_1T_1R(struct acpi_walk_state *walk_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 276 | union acpi_operand_object **operand = &walk_state->operands[0]; |
| 277 | union acpi_operand_object *return_desc = NULL; |
| 278 | acpi_integer index; |
| 279 | acpi_status status = AE_OK; |
| 280 | acpi_size length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 282 | ACPI_FUNCTION_TRACE_STR("ex_opcode_2A_1T_1R", |
| 283 | acpi_ps_get_opcode_name(walk_state->opcode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 285 | /* Execute the opcode */ |
| 286 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | if (walk_state->op_info->flags & AML_MATH) { |
| 288 | /* All simple math opcodes (add, etc.) */ |
| 289 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 290 | return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 291 | if (!return_desc) { |
| 292 | status = AE_NO_MEMORY; |
| 293 | goto cleanup; |
| 294 | } |
| 295 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 296 | return_desc->integer.value = |
| 297 | acpi_ex_do_math_op(walk_state->opcode, |
| 298 | operand[0]->integer.value, |
| 299 | operand[1]->integer.value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | goto store_result_to_target; |
| 301 | } |
| 302 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | switch (walk_state->opcode) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 304 | case AML_MOD_OP: /* Mod (Dividend, Divisor, remainder_result (ACPI 2.0) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 306 | return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | if (!return_desc) { |
| 308 | status = AE_NO_MEMORY; |
| 309 | goto cleanup; |
| 310 | } |
| 311 | |
| 312 | /* return_desc will contain the remainder */ |
| 313 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 314 | status = acpi_ut_divide(operand[0]->integer.value, |
| 315 | operand[1]->integer.value, |
| 316 | NULL, &return_desc->integer.value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | break; |
| 318 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 319 | case AML_CONCAT_OP: /* Concatenate (Data1, Data2, Result) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 321 | status = acpi_ex_do_concatenate(operand[0], operand[1], |
| 322 | &return_desc, walk_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | break; |
| 324 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 325 | case AML_TO_STRING_OP: /* to_string (Buffer, Length, Result) (ACPI 2.0) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | |
| 327 | /* |
| 328 | * Input object is guaranteed to be a buffer at this point (it may have |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 329 | * been converted.) Copy the raw buffer data to a new object of |
| 330 | * type String. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | */ |
| 332 | |
| 333 | /* |
| 334 | * Get the length of the new string. It is the smallest of: |
| 335 | * 1) Length of the input buffer |
| 336 | * 2) Max length as specified in the to_string operator |
| 337 | * 3) Length of input buffer up to a zero byte (null terminator) |
| 338 | * |
| 339 | * NOTE: A length of zero is ok, and will create a zero-length, null |
| 340 | * terminated string. |
| 341 | */ |
| 342 | length = 0; |
| 343 | while ((length < operand[0]->buffer.length) && |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 344 | (length < operand[1]->integer.value) && |
| 345 | (operand[0]->buffer.pointer[length])) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | length++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | /* Allocate a new string object */ |
| 350 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 351 | return_desc = acpi_ut_create_string_object(length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | if (!return_desc) { |
| 353 | status = AE_NO_MEMORY; |
| 354 | goto cleanup; |
| 355 | } |
| 356 | |
Bob Moore | c51a4de | 2005-11-17 13:07:00 -0500 | [diff] [blame^] | 357 | /* |
| 358 | * Copy the raw buffer data with no transform. |
| 359 | * (NULL terminated already) |
| 360 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 361 | ACPI_MEMCPY(return_desc->string.pointer, |
| 362 | operand[0]->buffer.pointer, length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | break; |
| 364 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 365 | case AML_CONCAT_RES_OP: |
| 366 | |
| 367 | /* concatenate_res_template (Buffer, Buffer, Result) (ACPI 2.0) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 369 | status = acpi_ex_concat_template(operand[0], operand[1], |
| 370 | &return_desc, walk_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | break; |
| 372 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 373 | case AML_INDEX_OP: /* Index (Source Index Result) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | |
| 375 | /* Create the internal return object */ |
| 376 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 377 | return_desc = |
| 378 | acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_REFERENCE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | if (!return_desc) { |
| 380 | status = AE_NO_MEMORY; |
| 381 | goto cleanup; |
| 382 | } |
| 383 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 384 | index = operand[1]->integer.value; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 386 | /* At this point, the Source operand is a Package, Buffer, or String */ |
| 387 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 388 | if (ACPI_GET_OBJECT_TYPE(operand[0]) == ACPI_TYPE_PACKAGE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | /* Object to be indexed is a Package */ |
| 390 | |
| 391 | if (index >= operand[0]->package.count) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 392 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 393 | "Index value (%X%8.8X) beyond package end (%X)\n", |
| 394 | ACPI_FORMAT_UINT64(index), |
| 395 | operand[0]->package.count)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | status = AE_AML_PACKAGE_LIMIT; |
| 397 | goto cleanup; |
| 398 | } |
| 399 | |
| 400 | return_desc->reference.target_type = ACPI_TYPE_PACKAGE; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 401 | return_desc->reference.object = operand[0]; |
| 402 | return_desc->reference.where = |
| 403 | &operand[0]->package.elements[index]; |
| 404 | } else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | /* Object to be indexed is a Buffer/String */ |
| 406 | |
| 407 | if (index >= operand[0]->buffer.length) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 408 | ACPI_DEBUG_PRINT((ACPI_DB_ERROR, |
| 409 | "Index value (%X%8.8X) beyond end of buffer (%X)\n", |
| 410 | ACPI_FORMAT_UINT64(index), |
| 411 | operand[0]->buffer.length)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 412 | status = AE_AML_BUFFER_LIMIT; |
| 413 | goto cleanup; |
| 414 | } |
| 415 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 416 | return_desc->reference.target_type = |
| 417 | ACPI_TYPE_BUFFER_FIELD; |
| 418 | return_desc->reference.object = operand[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | } |
| 420 | |
| 421 | /* |
| 422 | * Add a reference to the target package/buffer/string for the life |
| 423 | * of the index. |
| 424 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 425 | acpi_ut_add_reference(operand[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | |
| 427 | /* Complete the Index reference object */ |
| 428 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 429 | return_desc->reference.opcode = AML_INDEX_OP; |
| 430 | return_desc->reference.offset = (u32) index; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | |
| 432 | /* Store the reference to the Target */ |
| 433 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 434 | status = acpi_ex_store(return_desc, operand[2], walk_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | |
| 436 | /* Return the reference */ |
| 437 | |
| 438 | walk_state->result_obj = return_desc; |
| 439 | goto cleanup; |
| 440 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | default: |
| 442 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 443 | ACPI_REPORT_ERROR(("acpi_ex_opcode_2A_1T_1R: Unknown opcode %X\n", walk_state->opcode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | status = AE_AML_BAD_OPCODE; |
| 445 | break; |
| 446 | } |
| 447 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 448 | store_result_to_target: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 450 | if (ACPI_SUCCESS(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | /* |
| 452 | * Store the result of the operation (which is now in return_desc) into |
| 453 | * the Target descriptor. |
| 454 | */ |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 455 | status = acpi_ex_store(return_desc, operand[2], walk_state); |
| 456 | if (ACPI_FAILURE(status)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | goto cleanup; |
| 458 | } |
| 459 | |
| 460 | if (!walk_state->result_obj) { |
| 461 | walk_state->result_obj = return_desc; |
| 462 | } |
| 463 | } |
| 464 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 465 | cleanup: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | |
| 467 | /* Delete return object on error */ |
| 468 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 469 | if (ACPI_FAILURE(status)) { |
| 470 | acpi_ut_remove_reference(return_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | } |
| 472 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 473 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | } |
| 475 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | /******************************************************************************* |
| 477 | * |
| 478 | * FUNCTION: acpi_ex_opcode_2A_0T_1R |
| 479 | * |
| 480 | * PARAMETERS: walk_state - Current walk state |
| 481 | * |
| 482 | * RETURN: Status |
| 483 | * |
| 484 | * DESCRIPTION: Execute opcode with 2 arguments, no target, and a return value |
| 485 | * |
| 486 | ******************************************************************************/ |
| 487 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 488 | acpi_status acpi_ex_opcode_2A_0T_1R(struct acpi_walk_state *walk_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 490 | union acpi_operand_object **operand = &walk_state->operands[0]; |
| 491 | union acpi_operand_object *return_desc = NULL; |
| 492 | acpi_status status = AE_OK; |
| 493 | u8 logical_result = FALSE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 495 | ACPI_FUNCTION_TRACE_STR("ex_opcode_2A_0T_1R", |
| 496 | acpi_ps_get_opcode_name(walk_state->opcode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | |
| 498 | /* Create the internal return object */ |
| 499 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 500 | return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 501 | if (!return_desc) { |
| 502 | status = AE_NO_MEMORY; |
| 503 | goto cleanup; |
| 504 | } |
| 505 | |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 506 | /* Execute the Opcode */ |
| 507 | |
| 508 | if (walk_state->op_info->flags & AML_LOGICAL_NUMERIC) { |
| 509 | /* logical_op (Operand0, Operand1) */ |
| 510 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 511 | status = acpi_ex_do_logical_numeric_op(walk_state->opcode, |
| 512 | operand[0]->integer. |
| 513 | value, |
| 514 | operand[1]->integer. |
| 515 | value, &logical_result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | goto store_logical_result; |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 517 | } else if (walk_state->op_info->flags & AML_LOGICAL) { |
Robert Moore | 44f6c01 | 2005-04-18 22:49:35 -0400 | [diff] [blame] | 518 | /* logical_op (Operand0, Operand1) */ |
| 519 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 520 | status = acpi_ex_do_logical_op(walk_state->opcode, operand[0], |
| 521 | operand[1], &logical_result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | goto store_logical_result; |
| 523 | } |
| 524 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | switch (walk_state->opcode) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 526 | case AML_ACQUIRE_OP: /* Acquire (mutex_object, Timeout) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 528 | status = |
| 529 | acpi_ex_acquire_mutex(operand[1], operand[0], walk_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | if (status == AE_TIME) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 531 | logical_result = TRUE; /* TRUE = Acquire timed out */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | status = AE_OK; |
| 533 | } |
| 534 | break; |
| 535 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 536 | case AML_WAIT_OP: /* Wait (event_object, Timeout) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 538 | status = acpi_ex_system_wait_event(operand[1], operand[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | if (status == AE_TIME) { |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 540 | logical_result = TRUE; /* TRUE, Wait timed out */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | status = AE_OK; |
| 542 | } |
| 543 | break; |
| 544 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 545 | default: |
| 546 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 547 | ACPI_REPORT_ERROR(("acpi_ex_opcode_2A_0T_1R: Unknown opcode %X\n", walk_state->opcode)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | status = AE_AML_BAD_OPCODE; |
| 549 | goto cleanup; |
| 550 | } |
| 551 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 552 | store_logical_result: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | /* |
| 554 | * Set return value to according to logical_result. logical TRUE (all ones) |
| 555 | * Default is FALSE (zero) |
| 556 | */ |
| 557 | if (logical_result) { |
| 558 | return_desc->integer.value = ACPI_INTEGER_MAX; |
| 559 | } |
| 560 | |
| 561 | walk_state->result_obj = return_desc; |
| 562 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 563 | cleanup: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | |
| 565 | /* Delete return object on error */ |
| 566 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 567 | if (ACPI_FAILURE(status)) { |
| 568 | acpi_ut_remove_reference(return_desc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | } |
| 570 | |
Len Brown | 4be44fc | 2005-08-05 00:44:28 -0400 | [diff] [blame] | 571 | return_ACPI_STATUS(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | } |