exoparg1.c revision 52fc0b026e99b5d5d585095148d997d5634bbc25
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/****************************************************************************** 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Module Name: exoparg1 - AML execution - opcodes with 1 argument 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *****************************************************************************/ 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 94a90c7e86202f46fa9af011bdbcdf36e355d1721Bob Moore * Copyright (C) 2000 - 2006, R. Byron Moore 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * All rights reserved. 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Redistribution and use in source and binary forms, with or without 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * modification, are permitted provided that the following conditions 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * are met: 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1. Redistributions of source code must retain the above copyright 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * notice, this list of conditions, and the following disclaimer, 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * without modification. 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2. Redistributions in binary form must reproduce at minimum a disclaimer 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * substantially similar to the "NO WARRANTY" disclaimer below 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ("Disclaimer") and any redistribution must be conditioned upon 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * including a substantially similar Disclaimer requirement for further 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * binary redistribution. 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3. Neither the names of the above-listed copyright holders nor the names 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * of any contributors may be used to endorse or promote products derived 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * from this software without specific prior written permission. 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Alternatively, this software may be distributed under the terms of the 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * GNU General Public License ("GPL") version 2 as published by the Free 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Software Foundation. 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NO WARRANTY 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * POSSIBILITY OF SUCH DAMAGES. 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <acpi/acpi.h> 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <acpi/acparser.h> 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <acpi/acdispat.h> 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <acpi/acinterp.h> 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <acpi/amlcode.h> 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <acpi/acnamesp.h> 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define _COMPONENT ACPI_EXECUTER 534be44fcd3bf648b782f4460fd06dfae6c42ded4bLen BrownACPI_MODULE_NAME("exoparg1") 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*! 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Naming convention for AML interpreter execution routines. 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The routines that begin execution of AML opcodes are named with a common 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * convention based upon the number of arguments, the number of target operands, 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and whether or not a value is returned: 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * AcpiExOpcode_xA_yT_zR 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Where: 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * xA - ARGUMENTS: The number of arguments (input operands) that are 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * required for this opcode type (0 through 6 args). 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * yT - TARGETS: The number of targets (output operands) that are required 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for this opcode type (0, 1, or 2 targets). 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * zR - RETURN VALUE: Indicates whether this opcode type returns a value 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * as the function return (0 or 1). 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The AcpiExOpcode* functions are called via the Dispatcher component with 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * fully resolved operands. 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds!*/ 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************************************************************* 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FUNCTION: acpi_ex_opcode_0A_0T_1R 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * PARAMETERS: walk_state - Current state (contains AML opcode) 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * RETURN: Status 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DESCRIPTION: Execute operator with no operands, one return value 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ******************************************************************************/ 874be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brownacpi_status acpi_ex_opcode_0A_0T_1R(struct acpi_walk_state *walk_state) 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 894be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_status status = AE_OK; 904be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object *return_desc = NULL; 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 924be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_FUNCTION_TRACE_STR("ex_opcode_0A_0T_1R", 934be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ps_get_opcode_name(walk_state->opcode)); 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Examine the AML opcode */ 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (walk_state->opcode) { 984be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TIMER_OP: /* Timer () */ 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Create a return object of type Integer */ 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1024be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10773459f73e5d1602c59ebec114fc45185521353c1Robert Moore#if ACPI_MACHINE_WIDTH != 16 1084be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc->integer.value = acpi_os_get_timer(); 10973459f73e5d1602c59ebec114fc45185521353c1Robert Moore#endif 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1124be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown default: /* Unknown opcode */ 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 114b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, "Unknown AML opcode %X", 115b8e4d89357fc434618a59c1047cac72641191805Bob Moore walk_state->opcode)); 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_BAD_OPCODE; 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1204be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown cleanup: 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Delete return object on error */ 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1244be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if ((ACPI_FAILURE(status)) || walk_state->result_obj) { 1254be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(return_desc); 1264be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown } else { 12788ac00f5a841dcfc5c682000f4a6add0add8caacRobert Moore /* Save the return value */ 12888ac00f5a841dcfc5c682000f4a6add0add8caacRobert Moore 12988ac00f5a841dcfc5c682000f4a6add0add8caacRobert Moore walk_state->result_obj = return_desc; 13088ac00f5a841dcfc5c682000f4a6add0add8caacRobert Moore } 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1324be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************************************************************* 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FUNCTION: acpi_ex_opcode_1A_0T_0R 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * PARAMETERS: walk_state - Current state (contains AML opcode) 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * RETURN: Status 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DESCRIPTION: Execute Type 1 monadic operator with numeric operand on 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * object stack 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ******************************************************************************/ 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1484be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brownacpi_status acpi_ex_opcode_1A_0T_0R(struct acpi_walk_state *walk_state) 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1504be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object **operand = &walk_state->operands[0]; 1514be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_status status = AE_OK; 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1534be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_FUNCTION_TRACE_STR("ex_opcode_1A_0T_0R", 1544be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ps_get_opcode_name(walk_state->opcode)); 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Examine the AML opcode */ 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (walk_state->opcode) { 1594be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_RELEASE_OP: /* Release (mutex_object) */ 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1614be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_release_mutex(operand[0], walk_state); 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1644be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_RESET_OP: /* Reset (event_object) */ 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1664be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_system_reset_event(operand[0]); 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1694be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_SIGNAL_OP: /* Signal (event_object) */ 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1714be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_system_signal_event(operand[0]); 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1744be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_SLEEP_OP: /* Sleep (msec_time) */ 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1764be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_system_do_suspend(operand[0]->integer.value); 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1794be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_STALL_OP: /* Stall (usec_time) */ 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1814be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 1824be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ex_system_do_stall((u32) operand[0]->integer.value); 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1854be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_UNLOAD_OP: /* Unload (Handle) */ 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1874be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_unload_table(operand[0]); 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1904be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown default: /* Unknown opcode */ 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 192b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, "Unknown AML opcode %X", 193b8e4d89357fc434618a59c1047cac72641191805Bob Moore walk_state->opcode)); 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_BAD_OPCODE; 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1984be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************************************************************* 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FUNCTION: acpi_ex_opcode_1A_1T_0R 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * PARAMETERS: walk_state - Current state (contains AML opcode) 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * RETURN: Status 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DESCRIPTION: Execute opcode with one argument, one target, and no 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return value. 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ******************************************************************************/ 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2144be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brownacpi_status acpi_ex_opcode_1A_1T_0R(struct acpi_walk_state *walk_state) 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2164be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_status status = AE_OK; 2174be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object **operand = &walk_state->operands[0]; 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2194be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_FUNCTION_TRACE_STR("ex_opcode_1A_1T_0R", 2204be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ps_get_opcode_name(walk_state->opcode)); 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Examine the AML opcode */ 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (walk_state->opcode) { 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_LOAD_OP: 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2274be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_load_op(operand[0], operand[1], walk_state); 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2304be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown default: /* Unknown opcode */ 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 232b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, "Unknown AML opcode %X", 233b8e4d89357fc434618a59c1047cac72641191805Bob Moore walk_state->opcode)); 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_BAD_OPCODE; 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2384be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown cleanup: 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2404be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************************************************************* 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FUNCTION: acpi_ex_opcode_1A_1T_1R 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * PARAMETERS: walk_state - Current state (contains AML opcode) 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * RETURN: Status 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DESCRIPTION: Execute opcode with one argument, one target, and a 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return value. 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ******************************************************************************/ 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2564be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brownacpi_status acpi_ex_opcode_1A_1T_1R(struct acpi_walk_state *walk_state) 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2584be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_status status = AE_OK; 2594be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object **operand = &walk_state->operands[0]; 2604be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object *return_desc = NULL; 2614be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object *return_desc2 = NULL; 2624be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown u32 temp32; 2634be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown u32 i; 2644be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_integer power_of_ten; 2654be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_integer digit; 2664be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown 2674be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_FUNCTION_TRACE_STR("ex_opcode_1A_1T_1R", 2684be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ps_get_opcode_name(walk_state->opcode)); 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Examine the AML opcode */ 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (walk_state->opcode) { 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_BIT_NOT_OP: 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_FIND_SET_LEFT_BIT_OP: 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_FIND_SET_RIGHT_BIT_OP: 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_FROM_BCD_OP: 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_TO_BCD_OP: 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_COND_REF_OF_OP: 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Create a return object of type Integer for these opcodes */ 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2824be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (walk_state->opcode) { 2894be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_BIT_NOT_OP: /* Not (Operand, Result) */ 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = ~operand[0]->integer.value; 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2944be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_FIND_SET_LEFT_BIT_OP: /* find_set_left_bit (Operand, Result) */ 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = operand[0]->integer.value; 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Acpi specification describes Integer type as a little 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * endian unsigned value, so this boundary condition is valid. 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (temp32 = 0; return_desc->integer.value && 3034be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown temp32 < ACPI_INTEGER_BIT_SIZE; ++temp32) { 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value >>= 1; 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = temp32; 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3104be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_FIND_SET_RIGHT_BIT_OP: /* find_set_right_bit (Operand, Result) */ 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = operand[0]->integer.value; 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The Acpi specification describes Integer type as a little 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * endian unsigned value, so this boundary condition is valid. 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (temp32 = 0; return_desc->integer.value && 3194be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown temp32 < ACPI_INTEGER_BIT_SIZE; ++temp32) { 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value <<= 1; 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Since the bit position is one-based, subtract from 33 (65) */ 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = temp32 == 0 ? 0 : 3264be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (ACPI_INTEGER_BIT_SIZE + 1) - temp32; 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3294be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_FROM_BCD_OP: /* from_bcd (BCDValue, Result) */ 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The 64-bit ACPI integer can hold 16 4-bit BCD characters 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (if table is 32-bit, integer can hold 8 BCD characters) 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Convert each 4-bit BCD value 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds power_of_ten = 1; 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = 0; 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds digit = operand[0]->integer.value; 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Convert each BCD digit (each is one nybble wide) */ 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3424be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown for (i = 0; 3434be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (i < acpi_gbl_integer_nybble_width) && (digit > 0); 3444be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown i++) { 34552fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Get the least significant 4-bit BCD digit */ 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp32 = ((u32) digit) & 0xF; 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Check the range of the digit */ 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (temp32 > 9) { 353b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 354b8e4d89357fc434618a59c1047cac72641191805Bob Moore "BCD digit too large (not decimal): 0x%X", 355b8e4d89357fc434618a59c1047cac72641191805Bob Moore temp32)); 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_NUMERIC_OVERFLOW; 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Sum the digit into the result with the current power of 10 */ 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3634be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc->integer.value += 3644be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (((acpi_integer) temp32) * power_of_ten); 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Shift to next BCD digit */ 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds digit >>= 4; 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Next power of 10 */ 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds power_of_ten *= 10; 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3764be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TO_BCD_OP: /* to_bcd (Operand, Result) */ 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = 0; 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds digit = operand[0]->integer.value; 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Each BCD digit is one nybble wide */ 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3834be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown for (i = 0; 3844be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (i < acpi_gbl_integer_nybble_width) && (digit > 0); 3854be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown i++) { 3864be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (void)acpi_ut_short_divide(digit, 10, &digit, 3874be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown &temp32); 3881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38944f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore /* 39044f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * Insert the BCD digit that resides in the 39144f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * remainder from above 39244f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore */ 3934be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc->integer.value |= 3944be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (((acpi_integer) temp32) << ACPI_MUL_4(i)); 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Overflow if there is any data left in Digit */ 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (digit > 0) { 400b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 401b8e4d89357fc434618a59c1047cac72641191805Bob Moore "Integer too large to convert to BCD: %8.8X%8.8X", 402b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_FORMAT_UINT64(operand[0]-> 403b8e4d89357fc434618a59c1047cac72641191805Bob Moore integer.value))); 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_NUMERIC_OVERFLOW; 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4094be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_COND_REF_OF_OP: /* cond_ref_of (source_object, Result) */ 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This op is a little strange because the internal return value is 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * different than the return value stored in the result descriptor 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (There are really two return values) 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4164be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if ((struct acpi_namespace_node *)operand[0] == 4174be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_gbl_root_node) { 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This means that the object does not exist in the namespace, 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return FALSE 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = 0; 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Get the object reference, store it, and remove our reference */ 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4284be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_get_object_reference(operand[0], 4294be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown &return_desc2, 4304be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state); 4314be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4354be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 4364be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ex_store(return_desc2, operand[1], walk_state); 4374be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(return_desc2); 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* The object exists in the namespace, return TRUE */ 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = ACPI_INTEGER_MAX; 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* No other opcodes get here */ 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4504be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_STORE_OP: /* Store (Source, Target) */ 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * A store operand is typically a number, string, buffer or lvalue 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Be careful about deleting the source object, 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * since the object itself may have been stored. 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4574be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_store(operand[0], operand[1], walk_state); 4584be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 4594be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* It is possible that the Store already produced a return object */ 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!walk_state->result_obj) { 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 46644f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * Normally, we would remove a reference on the Operand[0] 46744f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * parameter; But since it is being used as the internal return 46844f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * object (meaning we would normally increment it), the two 46944f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * cancel out, and we simply don't do anything. 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds walk_state->result_obj = operand[0]; 4724be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state->operands[0] = NULL; /* Prevent deletion */ 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4744be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4764be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown /* 4774be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown * ACPI 2.0 Opcodes 4784be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown */ 4794be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_COPY_OP: /* Copy (Source, Target) */ 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4814be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 4824be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_copy_iobject_to_iobject(operand[0], &return_desc, 4834be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state); 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4864be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TO_DECSTRING_OP: /* to_decimal_string (Data, Result) */ 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4884be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_convert_to_string(operand[0], &return_desc, 4894be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_EXPLICIT_CONVERT_DECIMAL); 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (return_desc == operand[0]) { 49152fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* No conversion performed, add ref to handle return value */ 4934be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(return_desc); 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4974be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TO_HEXSTRING_OP: /* to_hex_string (Data, Result) */ 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4994be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_convert_to_string(operand[0], &return_desc, 5004be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_EXPLICIT_CONVERT_HEX); 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (return_desc == operand[0]) { 50252fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* No conversion performed, add ref to handle return value */ 5044be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(return_desc); 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5084be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TO_BUFFER_OP: /* to_buffer (Data, Result) */ 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5104be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_convert_to_buffer(operand[0], &return_desc); 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (return_desc == operand[0]) { 51252fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* No conversion performed, add ref to handle return value */ 5144be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(return_desc); 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5184be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TO_INTEGER_OP: /* to_integer (Data, Result) */ 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5204be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_convert_to_integer(operand[0], &return_desc, 5214be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_ANY_BASE); 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (return_desc == operand[0]) { 52352fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* No conversion performed, add ref to handle return value */ 5254be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(return_desc); 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5294be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_SHIFT_LEFT_BIT_OP: /* shift_left_bit (Source, bit_num) */ 5304be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_SHIFT_RIGHT_BIT_OP: /* shift_right_bit (Source, bit_num) */ 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 53244f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore /* These are two obsolete opcodes */ 53344f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore 534b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 535b8e4d89357fc434618a59c1047cac72641191805Bob Moore "%s is obsolete and not implemented", 536b8e4d89357fc434618a59c1047cac72641191805Bob Moore acpi_ps_get_opcode_name(walk_state->opcode))); 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_SUPPORT; 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5404be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown default: /* Unknown opcode */ 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 542b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, "Unknown AML opcode %X", 543b8e4d89357fc434618a59c1047cac72641191805Bob Moore walk_state->opcode)); 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_BAD_OPCODE; 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5484be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_SUCCESS(status)) { 54952fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 55044f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore /* Store the return value computed above into the target object */ 55144f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore 5524be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_store(return_desc, operand[1], walk_state); 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5554be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown cleanup: 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!walk_state->result_obj) { 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds walk_state->result_obj = return_desc; 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Delete return object on error */ 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5634be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 5644be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(return_desc); 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5674be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************************************************************* 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FUNCTION: acpi_ex_opcode_1A_0T_1R 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * PARAMETERS: walk_state - Current state (contains AML opcode) 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * RETURN: Status 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DESCRIPTION: Execute opcode with one argument, no target, and a return value 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ******************************************************************************/ 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5824be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brownacpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state) 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5844be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object **operand = &walk_state->operands[0]; 5854be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object *temp_desc; 5864be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object *return_desc = NULL; 5874be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_status status = AE_OK; 5884be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown u32 type; 5894be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_integer value; 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5914be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_FUNCTION_TRACE_STR("ex_opcode_1A_0T_1R", 5924be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ps_get_opcode_name(walk_state->opcode)); 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Examine the AML opcode */ 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (walk_state->opcode) { 5974be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_LNOT_OP: /* LNot (Operand) */ 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5994be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Set result to ONES (TRUE) if Value == 0. Note: 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return_desc->Integer.Value is initially == 0 (FALSE) from above. 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!operand[0]->integer.value) { 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = ACPI_INTEGER_MAX; 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6144be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_DECREMENT_OP: /* Decrement (Operand) */ 6154be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_INCREMENT_OP: /* Increment (Operand) */ 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Create a new integer. Can't just get the base integer and 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * increment it because it may be an Arg or Field. 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6214be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Since we are expecting a Reference operand, it can be either a 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NS Node or an internal object. 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp_desc = operand[0]; 6324be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_GET_DESCRIPTOR_TYPE(temp_desc) == 6334be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_DESC_TYPE_OPERAND) { 63452fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Internal reference object - prevent deletion */ 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6374be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(temp_desc); 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Convert the Reference operand to an Integer (This removes a 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reference on the Operand[0] object) 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NOTE: We use LNOT_OP here in order to force resolution of the 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reference operand to an actual integer. 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6474be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 6484be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ex_resolve_operands(AML_LNOT_OP, &temp_desc, 6494be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state); 6504be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 651b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_EXCEPTION((AE_INFO, status, 652b8e4d89357fc434618a59c1047cac72641191805Bob Moore "While resolving operands for [%s]", 653b8e4d89357fc434618a59c1047cac72641191805Bob Moore acpi_ps_get_opcode_name(walk_state-> 654b8e4d89357fc434618a59c1047cac72641191805Bob Moore opcode))); 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * temp_desc is now guaranteed to be an Integer object -- 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Perform the actual increment or decrement 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (walk_state->opcode == AML_INCREMENT_OP) { 6644be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc->integer.value = 6654be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown temp_desc->integer.value + 1; 6664be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown } else { 6674be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc->integer.value = 6684be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown temp_desc->integer.value - 1; 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Finished with this Integer object */ 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6734be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(temp_desc); 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Store the result back (indirectly) through the original 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Reference object 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6794be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_store(return_desc, operand[0], walk_state); 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6824be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TYPE_OP: /* object_type (source_object) */ 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note: The operand is not resolved at this point because we want to 68644f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * get the associated object, not its value. For example, we don't 68744f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * want to resolve a field_unit to its value, we want the actual 68844f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * field_unit object. 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Get the type of the base object */ 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6934be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 6944be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ex_resolve_multiple(walk_state, operand[0], &type, 6954be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown NULL); 6964be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 6981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Allocate a descriptor to hold the type. */ 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7014be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = type; 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7104be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_SIZE_OF_OP: /* size_of (source_object) */ 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note: The operand is not resolved at this point because we want to 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * get the associated object, not its value. 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Get the base object */ 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7194be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_resolve_multiple(walk_state, 7204be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown operand[0], &type, 7214be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown &temp_desc); 7224be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The type of the base object must be integer, buffer, string, or 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * package. All others are not supported. 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NOTE: Integer is not specifically supported by the ACPI spec, 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * but is supported implicitly via implicit operand conversion. 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * rather than bother with conversion, we just use the byte width 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * global (4 or 8 bytes). 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (type) { 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_INTEGER: 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = acpi_gbl_integer_byte_width; 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_BUFFER: 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = temp_desc->buffer.length; 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_STRING: 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = temp_desc->string.length; 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_PACKAGE: 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = temp_desc->package.count; 7501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 753b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 754b8e4d89357fc434618a59c1047cac72641191805Bob Moore "Operand is not Buf/Int/Str/Pkg - found type %s", 755b8e4d89357fc434618a59c1047cac72641191805Bob Moore acpi_ut_get_type_name(type))); 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_OPERAND_TYPE; 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Now that we have the size of the object, create a result 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * object to hold the value 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7644be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = value; 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7734be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_REF_OF_OP: /* ref_of (source_object) */ 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7754be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 7764be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ex_get_object_reference(operand[0], &return_desc, 7774be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state); 7784be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7834be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_DEREF_OF_OP: /* deref_of (obj_reference | String) */ 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Check for a method local or argument, or standalone String */ 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 78752fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore if (ACPI_GET_DESCRIPTOR_TYPE(operand[0]) == 7884be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_DESC_TYPE_NAMED) { 78952fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore temp_desc = 79052fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore acpi_ns_get_attached_object((struct 79152fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore acpi_namespace_node *) 79252fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore operand[0]); 79352fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore if (temp_desc 79452fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore && 79552fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore ((ACPI_GET_OBJECT_TYPE(temp_desc) == 79652fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore ACPI_TYPE_STRING) 79752fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore || (ACPI_GET_OBJECT_TYPE(temp_desc) == 79852fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore ACPI_TYPE_LOCAL_REFERENCE))) { 79952fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore operand[0] = temp_desc; 80052fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore acpi_ut_add_reference(temp_desc); 80152fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore } else { 80252fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore status = AE_AML_OPERAND_TYPE; 80352fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore goto cleanup; 80452fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore } 80552fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore } else { 8064be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown switch (ACPI_GET_OBJECT_TYPE(operand[0])) { 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_LOCAL_REFERENCE: 8081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is a deref_of (local_x | arg_x) 8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Must resolve/dereference the local/arg reference first 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (operand[0]->reference.opcode) { 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_LOCAL_OP: 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_ARG_OP: 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Set Operand[0] to the value of the local/arg */ 8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8194be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 8204be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ds_method_data_get_value 8214be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (operand[0]->reference.opcode, 8224be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown operand[0]->reference.offset, 8234be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state, &temp_desc); 8244be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Delete our reference to the input object and 8301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * point to the object just retrieved 8311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8324be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(operand[0]); 8331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds operand[0] = temp_desc; 8341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_REF_OF_OP: 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Get the object to which the reference refers */ 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8404be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown temp_desc = 8414be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown operand[0]->reference.object; 8424be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(operand[0]); 8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds operand[0] = temp_desc; 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Must be an Index op - handled below */ 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_STRING: 85452fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore break; 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 85652fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore default: 85752fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore status = AE_AML_OPERAND_TYPE; 85852fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore goto cleanup; 85952fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore } 86052fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore } 86152fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 86252fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore if (ACPI_GET_DESCRIPTOR_TYPE(operand[0]) != 86352fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore ACPI_DESC_TYPE_NAMED) { 86452fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore if (ACPI_GET_OBJECT_TYPE(operand[0]) == 86552fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore ACPI_TYPE_STRING) { 8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 86744f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * This is a deref_of (String). The string is a reference 86844f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * to a named ACPI object. 8691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 8701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1) Find the owning Node 87152fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore * 2) Dereference the node to an actual object. Could be a 87244f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * Field, so we need to resolve the node to a value. 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8744be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 8754be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ns_get_node_by_path(operand[0]->string. 8764be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown pointer, 8774be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state-> 8784be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown scope_info->scope. 8794be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown node, 8804be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_NS_SEARCH_PARENT, 8814be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_CAST_INDIRECT_PTR 8824be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (struct 8834be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_namespace_node, 8844be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown &return_desc)); 8854be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8894be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 8904be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ex_resolve_node_to_value 8914be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (ACPI_CAST_INDIRECT_PTR 8924be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (struct acpi_namespace_node, &return_desc), 8934be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state); 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Operand[0] may have changed from the code above */ 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9004be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_GET_DESCRIPTOR_TYPE(operand[0]) == 9014be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_DESC_TYPE_NAMED) { 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is a deref_of (object_reference) 9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Get the actual object from the Node (This is the dereference). 90544f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * This case may only happen when a local_x or arg_x is 90644f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * dereferenced above. 9071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9084be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = acpi_ns_get_attached_object((struct 9094be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_namespace_node 9104be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown *) 9114be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown operand[0]); 9124be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(return_desc); 9134be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown } else { 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 91544f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * This must be a reference object produced by either the 91644f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * Index() or ref_of() operator 9171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (operand[0]->reference.opcode) { 9191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_INDEX_OP: 9201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 9221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The target type for the Index operator must be 9231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * either a Buffer or a Package 9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (operand[0]->reference.target_type) { 9261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_BUFFER_FIELD: 9271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9284be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown temp_desc = 9294be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown operand[0]->reference.object; 9301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Create a new object that contains one element of the 9331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * buffer -- the element pointed to by the index. 9341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 9351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NOTE: index into a buffer is NOT a pointer to a 9361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * sub-buffer of the main buffer, it is only a pointer to a 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * single element (byte) of the buffer! 9381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9394be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = 9404be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_create_internal_object 9414be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (ACPI_TYPE_INTEGER); 9421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 9451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Since we are returning the value of the buffer at the 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * indexed location, we don't need to add an additional 9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reference to the buffer itself. 9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = 9534be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown temp_desc->buffer. 9544be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown pointer[operand[0]->reference. 9554be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown offset]; 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_PACKAGE: 9591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 96144f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * Return the referenced element of the package. We must 96244f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * add another reference to the referenced object, however. 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9644be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = 9654be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown *(operand[0]->reference.where); 966f9f4601f331aa1226d7a798a01950efbb388f07fRobert Moore if (return_desc) { 9674be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference 9684be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (return_desc); 9691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 9741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 975b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 976b8e4d89357fc434618a59c1047cac72641191805Bob Moore "Unknown Index target_type %X in obj %p", 977b8e4d89357fc434618a59c1047cac72641191805Bob Moore operand[0]->reference. 978b8e4d89357fc434618a59c1047cac72641191805Bob Moore target_type, operand[0])); 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_OPERAND_TYPE; 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 9811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_REF_OF_OP: 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc = operand[0]->reference.object; 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9884be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_GET_DESCRIPTOR_TYPE(return_desc) == 9894be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_DESC_TYPE_NAMED) { 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9914be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = 9924be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ns_get_attached_object((struct 9934be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_namespace_node 9944be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown *) 9954be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc); 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Add another reference to the object! */ 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10004be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(return_desc); 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 1004b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 1005b8e4d89357fc434618a59c1047cac72641191805Bob Moore "Unknown opcode in ref(%p) - %X", 1006b8e4d89357fc434618a59c1047cac72641191805Bob Moore operand[0], 1007b8e4d89357fc434618a59c1047cac72641191805Bob Moore operand[0]->reference.opcode)); 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_TYPE; 10101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 10111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1017b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, "Unknown AML opcode %X", 1018b8e4d89357fc434618a59c1047cac72641191805Bob Moore walk_state->opcode)); 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_BAD_OPCODE; 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10234be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown cleanup: 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Delete return object on error */ 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10274be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 10284be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(return_desc); 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds walk_state->result_obj = return_desc; 10324be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1034