exoparg1.c revision ada241dcec7eb21ff1690a1ba6213299b743bb5b
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/* 9a8357b0c95484b46944728712f8810d3b37bf588Bob Moore * Copyright (C) 2000 - 2010, Intel Corp. 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> 46e2f7a7772880458edff1b1cc5a988947229fac26Len Brown#include "accommon.h" 47e2f7a7772880458edff1b1cc5a988947229fac26Len Brown#include "acparser.h" 48e2f7a7772880458edff1b1cc5a988947229fac26Len Brown#include "acdispat.h" 49e2f7a7772880458edff1b1cc5a988947229fac26Len Brown#include "acinterp.h" 50e2f7a7772880458edff1b1cc5a988947229fac26Len Brown#include "amlcode.h" 51e2f7a7772880458edff1b1cc5a988947229fac26Len Brown#include "acnamesp.h" 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define _COMPONENT ACPI_EXECUTER 544be44fcd3bf648b782f4460fd06dfae6c42ded4bLen BrownACPI_MODULE_NAME("exoparg1") 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/*! 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Naming convention for AML interpreter execution routines. 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The routines that begin execution of AML opcodes are named with a common 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * convention based upon the number of arguments, the number of target operands, 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * and whether or not a value is returned: 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * AcpiExOpcode_xA_yT_zR 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Where: 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * xA - ARGUMENTS: The number of arguments (input operands) that are 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * required for this opcode type (0 through 6 args). 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * yT - TARGETS: The number of targets (output operands) that are required 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * for this opcode type (0, 1, or 2 targets). 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * zR - RETURN VALUE: Indicates whether this opcode type returns a value 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * as the function return (0 or 1). 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The AcpiExOpcode* functions are called via the Dispatcher component with 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * fully resolved operands. 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds!*/ 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************************************************************* 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FUNCTION: acpi_ex_opcode_0A_0T_1R 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * PARAMETERS: walk_state - Current state (contains AML opcode) 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * RETURN: Status 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DESCRIPTION: Execute operator with no operands, one return value 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ******************************************************************************/ 884be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brownacpi_status acpi_ex_opcode_0A_0T_1R(struct acpi_walk_state *walk_state) 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 904be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_status status = AE_OK; 914be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object *return_desc = NULL; 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 93b229cf92eee616c7cb5ad8cdb35a19b119f00bc8Bob Moore ACPI_FUNCTION_TRACE_STR(ex_opcode_0A_0T_1R, 944be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ps_get_opcode_name(walk_state->opcode)); 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Examine the AML opcode */ 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (walk_state->opcode) { 994be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TIMER_OP: /* Timer () */ 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Create a return object of type Integer */ 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 103dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore return_desc = 104dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore acpi_ut_create_integer_object(acpi_os_get_timer()); 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1114be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown default: /* Unknown opcode */ 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 113f6a22b0bc417042e83117f52ab1a03696af185abBob Moore ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X", 114b8e4d89357fc434618a59c1047cac72641191805Bob Moore walk_state->opcode)); 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_BAD_OPCODE; 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1194be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown cleanup: 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Delete return object on error */ 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1234be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if ((ACPI_FAILURE(status)) || walk_state->result_obj) { 1244be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(return_desc); 1254b6e16cf2bacbf328535097fa74f1494b1873c54Bob Moore walk_state->result_obj = NULL; 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 153b229cf92eee616c7cb5ad8cdb35a19b119f00bc8Bob Moore 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 176ada241dcec7eb21ff1690a1ba6213299b743bb5bBob Moore status = acpi_ex_system_do_sleep(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 192f6a22b0bc417042e83117f52ab1a03696af185abBob Moore ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%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 219b229cf92eee616c7cb5ad8cdb35a19b119f00bc8Bob Moore 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 232f6a22b0bc417042e83117f52ab1a03696af185abBob Moore ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%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; 2645df7e6cb42da36c7d878239bebc81907b15f3943Bob Moore u64 power_of_ten; 2655df7e6cb42da36c7d878239bebc81907b15f3943Bob Moore u64 digit; 2664be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown 267b229cf92eee616c7cb5ad8cdb35a19b119f00bc8Bob Moore 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 3254c90ece249992c7a2e3fc921e5cdb8eb92193067Bob Moore return_desc->integer.value = 3264c90ece249992c7a2e3fc921e5cdb8eb92193067Bob Moore temp32 == 3274c90ece249992c7a2e3fc921e5cdb8eb92193067Bob Moore 0 ? 0 : (ACPI_INTEGER_BIT_SIZE + 1) - temp32; 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3304be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_FROM_BCD_OP: /* from_bcd (BCDValue, Result) */ 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The 64-bit ACPI integer can hold 16 4-bit BCD characters 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (if table is 32-bit, integer can hold 8 BCD characters) 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Convert each 4-bit BCD value 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds power_of_ten = 1; 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = 0; 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds digit = operand[0]->integer.value; 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Convert each BCD digit (each is one nybble wide) */ 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3434be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown for (i = 0; 3444be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (i < acpi_gbl_integer_nybble_width) && (digit > 0); 3454be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown i++) { 34652fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Get the least significant 4-bit BCD digit */ 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp32 = ((u32) digit) & 0xF; 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Check the range of the digit */ 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (temp32 > 9) { 354b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 355b8e4d89357fc434618a59c1047cac72641191805Bob Moore "BCD digit too large (not decimal): 0x%X", 356b8e4d89357fc434618a59c1047cac72641191805Bob Moore temp32)); 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_NUMERIC_OVERFLOW; 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Sum the digit into the result with the current power of 10 */ 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3644be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc->integer.value += 3655df7e6cb42da36c7d878239bebc81907b15f3943Bob Moore (((u64) temp32) * power_of_ten); 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Shift to next BCD digit */ 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds digit >>= 4; 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Next power of 10 */ 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds power_of_ten *= 10; 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3774be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TO_BCD_OP: /* to_bcd (Operand, Result) */ 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = 0; 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds digit = operand[0]->integer.value; 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Each BCD digit is one nybble wide */ 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3844be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown for (i = 0; 3854be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (i < acpi_gbl_integer_nybble_width) && (digit > 0); 3864be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown i++) { 3874be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (void)acpi_ut_short_divide(digit, 10, &digit, 3884be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown &temp32); 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 39044f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore /* 39144f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * Insert the BCD digit that resides in the 39244f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * remainder from above 39344f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore */ 3944be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc->integer.value |= 3955df7e6cb42da36c7d878239bebc81907b15f3943Bob Moore (((u64) temp32) << ACPI_MUL_4(i)); 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Overflow if there is any data left in Digit */ 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (digit > 0) { 401b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 402f6a22b0bc417042e83117f52ab1a03696af185abBob Moore "Integer too large to convert to BCD: 0x%8.8X%8.8X", 403b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_FORMAT_UINT64(operand[0]-> 404b8e4d89357fc434618a59c1047cac72641191805Bob Moore integer.value))); 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_NUMERIC_OVERFLOW; 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4104be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_COND_REF_OF_OP: /* cond_ref_of (source_object, Result) */ 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This op is a little strange because the internal return value is 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * different than the return value stored in the result descriptor 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (There are really two return values) 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4174be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if ((struct acpi_namespace_node *)operand[0] == 4184be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_gbl_root_node) { 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This means that the object does not exist in the namespace, 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return FALSE 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = 0; 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Get the object reference, store it, and remove our reference */ 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4294be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_get_object_reference(operand[0], 4304be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown &return_desc2, 4314be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state); 4324be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4364be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 4374be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ex_store(return_desc2, operand[1], walk_state); 4384be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(return_desc2); 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* The object exists in the namespace, return TRUE */ 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4425df7e6cb42da36c7d878239bebc81907b15f3943Bob Moore return_desc->integer.value = ACPI_UINT64_MAX; 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* No other opcodes get here */ 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4514be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_STORE_OP: /* Store (Source, Target) */ 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * A store operand is typically a number, string, buffer or lvalue 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Be careful about deleting the source object, 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * since the object itself may have been stored. 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4584be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_store(operand[0], operand[1], walk_state); 4594be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 4604be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* It is possible that the Store already produced a return object */ 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!walk_state->result_obj) { 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 46744f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * Normally, we would remove a reference on the Operand[0] 46844f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * parameter; But since it is being used as the internal return 46944f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * object (meaning we would normally increment it), the two 47044f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * cancel out, and we simply don't do anything. 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds walk_state->result_obj = operand[0]; 4734be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state->operands[0] = NULL; /* Prevent deletion */ 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4754be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4774be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown /* 4784be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown * ACPI 2.0 Opcodes 4794be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown */ 4804be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_COPY_OP: /* Copy (Source, Target) */ 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4824be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 4834be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_copy_iobject_to_iobject(operand[0], &return_desc, 4844be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state); 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4874be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TO_DECSTRING_OP: /* to_decimal_string (Data, Result) */ 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4894be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_convert_to_string(operand[0], &return_desc, 4904be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_EXPLICIT_CONVERT_DECIMAL); 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (return_desc == operand[0]) { 49252fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* No conversion performed, add ref to handle return value */ 4944be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(return_desc); 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4984be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TO_HEXSTRING_OP: /* to_hex_string (Data, Result) */ 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5004be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_convert_to_string(operand[0], &return_desc, 5014be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_EXPLICIT_CONVERT_HEX); 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (return_desc == operand[0]) { 50352fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* No conversion performed, add ref to handle return value */ 5054be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(return_desc); 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5094be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TO_BUFFER_OP: /* to_buffer (Data, Result) */ 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5114be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_convert_to_buffer(operand[0], &return_desc); 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (return_desc == operand[0]) { 51352fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* No conversion performed, add ref to handle return value */ 5154be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(return_desc); 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5194be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TO_INTEGER_OP: /* to_integer (Data, Result) */ 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5214be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_convert_to_integer(operand[0], &return_desc, 5224be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_ANY_BASE); 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (return_desc == operand[0]) { 52452fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* No conversion performed, add ref to handle return value */ 5264be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(return_desc); 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5304be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_SHIFT_LEFT_BIT_OP: /* shift_left_bit (Source, bit_num) */ 5314be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_SHIFT_RIGHT_BIT_OP: /* shift_right_bit (Source, bit_num) */ 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 53344f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore /* These are two obsolete opcodes */ 53444f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore 535b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 536b8e4d89357fc434618a59c1047cac72641191805Bob Moore "%s is obsolete and not implemented", 537b8e4d89357fc434618a59c1047cac72641191805Bob Moore acpi_ps_get_opcode_name(walk_state->opcode))); 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_SUPPORT; 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5414be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown default: /* Unknown opcode */ 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 543f6a22b0bc417042e83117f52ab1a03696af185abBob Moore ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X", 544b8e4d89357fc434618a59c1047cac72641191805Bob Moore walk_state->opcode)); 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_BAD_OPCODE; 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5494be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_SUCCESS(status)) { 55052fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 55144f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore /* Store the return value computed above into the target object */ 55244f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore 5534be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_store(return_desc, operand[1], walk_state); 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5564be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown cleanup: 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Delete return object on error */ 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5604be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 5614be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(return_desc); 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5648313524a0d466f451a62709aaedf988d8257b21cBob Moore /* Save return object on success */ 5658313524a0d466f451a62709aaedf988d8257b21cBob Moore 5668313524a0d466f451a62709aaedf988d8257b21cBob Moore else if (!walk_state->result_obj) { 5678313524a0d466f451a62709aaedf988d8257b21cBob Moore walk_state->result_obj = return_desc; 5688313524a0d466f451a62709aaedf988d8257b21cBob Moore } 5698313524a0d466f451a62709aaedf988d8257b21cBob Moore 5704be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************************************************************* 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FUNCTION: acpi_ex_opcode_1A_0T_1R 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * PARAMETERS: walk_state - Current state (contains AML opcode) 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * RETURN: Status 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DESCRIPTION: Execute opcode with one argument, no target, and a return value 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ******************************************************************************/ 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5854be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brownacpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state) 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5874be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object **operand = &walk_state->operands[0]; 5884be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object *temp_desc; 5894be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object *return_desc = NULL; 5904be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_status status = AE_OK; 5914be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown u32 type; 5925df7e6cb42da36c7d878239bebc81907b15f3943Bob Moore u64 value; 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 594b229cf92eee616c7cb5ad8cdb35a19b119f00bc8Bob Moore ACPI_FUNCTION_TRACE_STR(ex_opcode_1A_0T_1R, 5954be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ps_get_opcode_name(walk_state->opcode)); 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Examine the AML opcode */ 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (walk_state->opcode) { 6004be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_LNOT_OP: /* LNot (Operand) */ 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 602dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore return_desc = acpi_ut_create_integer_object((u64) 0); 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Set result to ONES (TRUE) if Value == 0. Note: 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return_desc->Integer.Value is initially == 0 (FALSE) from above. 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!operand[0]->integer.value) { 6135df7e6cb42da36c7d878239bebc81907b15f3943Bob Moore return_desc->integer.value = ACPI_UINT64_MAX; 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6174be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_DECREMENT_OP: /* Decrement (Operand) */ 6184be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_INCREMENT_OP: /* Increment (Operand) */ 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Create a new integer. Can't just get the base integer and 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * increment it because it may be an Arg or Field. 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6244be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); 6251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 6271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 6281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Since we are expecting a Reference operand, it can be either a 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NS Node or an internal object. 6331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp_desc = operand[0]; 6354be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_GET_DESCRIPTOR_TYPE(temp_desc) == 6364be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_DESC_TYPE_OPERAND) { 63752fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Internal reference object - prevent deletion */ 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6404be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(temp_desc); 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Convert the Reference operand to an Integer (This removes a 6451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reference on the Operand[0] object) 6461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NOTE: We use LNOT_OP here in order to force resolution of the 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * reference operand to an actual integer. 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6504be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 6514be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ex_resolve_operands(AML_LNOT_OP, &temp_desc, 6524be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state); 6534be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 654b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_EXCEPTION((AE_INFO, status, 655b8e4d89357fc434618a59c1047cac72641191805Bob Moore "While resolving operands for [%s]", 656b8e4d89357fc434618a59c1047cac72641191805Bob Moore acpi_ps_get_opcode_name(walk_state-> 657b8e4d89357fc434618a59c1047cac72641191805Bob Moore opcode))); 6581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 6601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * temp_desc is now guaranteed to be an Integer object -- 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Perform the actual increment or decrement 6651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (walk_state->opcode == AML_INCREMENT_OP) { 6674be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc->integer.value = 6684be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown temp_desc->integer.value + 1; 6694be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown } else { 6704be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc->integer.value = 6714be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown temp_desc->integer.value - 1; 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Finished with this Integer object */ 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6764be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(temp_desc); 6771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Store the result back (indirectly) through the original 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Reference object 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6824be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_store(return_desc, operand[0], walk_state); 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6854be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TYPE_OP: /* object_type (source_object) */ 6861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note: The operand is not resolved at this point because we want to 68944f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * get the associated object, not its value. For example, we don't 69044f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * want to resolve a field_unit to its value, we want the actual 69144f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * field_unit object. 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Get the type of the base object */ 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6964be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 6974be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ex_resolve_multiple(walk_state, operand[0], &type, 6984be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown NULL); 6994be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7024c90ece249992c7a2e3fc921e5cdb8eb92193067Bob Moore 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Allocate a descriptor to hold the type. */ 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 705dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore return_desc = acpi_ut_create_integer_object((u64) type); 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7124be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_SIZE_OF_OP: /* size_of (source_object) */ 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note: The operand is not resolved at this point because we want to 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * get the associated object, not its value. 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Get the base object */ 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7214be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_resolve_multiple(walk_state, 7224be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown operand[0], &type, 7234be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown &temp_desc); 7244be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The type of the base object must be integer, buffer, string, or 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * package. All others are not supported. 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NOTE: Integer is not specifically supported by the ACPI spec, 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * but is supported implicitly via implicit operand conversion. 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * rather than bother with conversion, we just use the byte width 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * global (4 or 8 bytes). 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (type) { 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_INTEGER: 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = acpi_gbl_integer_byte_width; 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_STRING: 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = temp_desc->string.length; 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7468246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming case ACPI_TYPE_BUFFER: 7478246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming 7488246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming /* Buffer arguments may not be evaluated at this point */ 7498246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming 7508246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming status = acpi_ds_get_buffer_arguments(temp_desc); 7518246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming value = temp_desc->buffer.length; 7528246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming break; 7538246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_PACKAGE: 7558246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming 7568246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming /* Package arguments may not be evaluated at this point */ 7578246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming 7588246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming status = acpi_ds_get_package_arguments(temp_desc); 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = temp_desc->package.count; 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 763b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 7648246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming "Operand must be Buffer/Integer/String/Package - found type %s", 765b8e4d89357fc434618a59c1047cac72641191805Bob Moore acpi_ut_get_type_name(type))); 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_OPERAND_TYPE; 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 7681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7708246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming if (ACPI_FAILURE(status)) { 7718246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming goto cleanup; 7728246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming } 7738246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Now that we have the size of the object, create a result 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * object to hold the value 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 778dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore return_desc = acpi_ut_create_integer_object(value); 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7854be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_REF_OF_OP: /* ref_of (source_object) */ 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7874be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 7884be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ex_get_object_reference(operand[0], &return_desc, 7894be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state); 7904be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7954be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_DEREF_OF_OP: /* deref_of (obj_reference | String) */ 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Check for a method local or argument, or standalone String */ 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 79952fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore if (ACPI_GET_DESCRIPTOR_TYPE(operand[0]) == 8004be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_DESC_TYPE_NAMED) { 80152fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore temp_desc = 80252fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore acpi_ns_get_attached_object((struct 80352fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore acpi_namespace_node *) 80452fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore operand[0]); 80552fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore if (temp_desc 8063371c19c294a4cb3649aa4e84606be8a1d999e61Bob Moore && ((temp_desc->common.type == ACPI_TYPE_STRING) 8073371c19c294a4cb3649aa4e84606be8a1d999e61Bob Moore || (temp_desc->common.type == 8083371c19c294a4cb3649aa4e84606be8a1d999e61Bob Moore ACPI_TYPE_LOCAL_REFERENCE))) { 80952fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore operand[0] = temp_desc; 81052fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore acpi_ut_add_reference(temp_desc); 81152fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore } else { 81252fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore status = AE_AML_OPERAND_TYPE; 81352fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore goto cleanup; 81452fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore } 81552fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore } else { 8163371c19c294a4cb3649aa4e84606be8a1d999e61Bob Moore switch ((operand[0])->common.type) { 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_LOCAL_REFERENCE: 8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is a deref_of (local_x | arg_x) 8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 8211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Must resolve/dereference the local/arg reference first 8221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8231044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore switch (operand[0]->reference.class) { 8241044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore case ACPI_REFCLASS_LOCAL: 8251044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore case ACPI_REFCLASS_ARG: 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Set Operand[0] to the value of the local/arg */ 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8294be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 8304be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ds_method_data_get_value 8311044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore (operand[0]->reference.class, 8321044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore operand[0]->reference.value, 8334be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state, &temp_desc); 8344be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Delete our reference to the input object and 8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * point to the object just retrieved 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8424be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(operand[0]); 8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds operand[0] = temp_desc; 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8461044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore case ACPI_REFCLASS_REFOF: 8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Get the object to which the reference refers */ 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8504be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown temp_desc = 8514be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown operand[0]->reference.object; 8524be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(operand[0]); 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds operand[0] = temp_desc; 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Must be an Index op - handled below */ 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_STRING: 86452fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore break; 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 86652fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore default: 86752fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore status = AE_AML_OPERAND_TYPE; 86852fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore goto cleanup; 86952fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore } 87052fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore } 87152fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 87252fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore if (ACPI_GET_DESCRIPTOR_TYPE(operand[0]) != 87352fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore ACPI_DESC_TYPE_NAMED) { 8743371c19c294a4cb3649aa4e84606be8a1d999e61Bob Moore if ((operand[0])->common.type == ACPI_TYPE_STRING) { 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 87644f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * This is a deref_of (String). The string is a reference 87744f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * to a named ACPI object. 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1) Find the owning Node 88052fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore * 2) Dereference the node to an actual object. Could be a 88144f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * Field, so we need to resolve the node to a value. 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8834be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 8844119532c95547821dbe72d6916dfa1b2148475b3Bob Moore acpi_ns_get_node(walk_state->scope_info-> 8854119532c95547821dbe72d6916dfa1b2148475b3Bob Moore scope.node, 8864119532c95547821dbe72d6916dfa1b2148475b3Bob Moore operand[0]->string.pointer, 8874119532c95547821dbe72d6916dfa1b2148475b3Bob Moore ACPI_NS_SEARCH_PARENT, 8884119532c95547821dbe72d6916dfa1b2148475b3Bob Moore ACPI_CAST_INDIRECT_PTR 8894119532c95547821dbe72d6916dfa1b2148475b3Bob Moore (struct 8904119532c95547821dbe72d6916dfa1b2148475b3Bob Moore acpi_namespace_node, 8914119532c95547821dbe72d6916dfa1b2148475b3Bob Moore &return_desc)); 8924be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8964be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 8974be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ex_resolve_node_to_value 8984be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (ACPI_CAST_INDIRECT_PTR 8994be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (struct acpi_namespace_node, &return_desc), 9004be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state); 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Operand[0] may have changed from the code above */ 9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9074be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_GET_DESCRIPTOR_TYPE(operand[0]) == 9084be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_DESC_TYPE_NAMED) { 9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 9101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is a deref_of (object_reference) 9111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Get the actual object from the Node (This is the dereference). 91244f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * This case may only happen when a local_x or arg_x is 91344f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * dereferenced above. 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9154be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = acpi_ns_get_attached_object((struct 9164be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_namespace_node 9174be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown *) 9184be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown operand[0]); 9194be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(return_desc); 9204be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown } else { 9211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 92244f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * This must be a reference object produced by either the 92344f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * Index() or ref_of() operator 9241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9251044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore switch (operand[0]->reference.class) { 9261044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore case ACPI_REFCLASS_INDEX: 9271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 9291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The target type for the Index operator must be 9301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * either a Buffer or a Package 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (operand[0]->reference.target_type) { 9331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_BUFFER_FIELD: 9341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9354be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown temp_desc = 9364be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown operand[0]->reference.object; 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Create a new object that contains one element of the 9401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * buffer -- the element pointed to by the index. 9411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 9421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NOTE: index into a buffer is NOT a pointer to a 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * sub-buffer of the main buffer, it is only a pointer to a 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * single element (byte) of the buffer! 945dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore * 946dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore * Since we are returning the value of the buffer at the 947dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore * indexed location, we don't need to add an additional 948dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore * reference to the buffer itself. 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9504be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = 951dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore acpi_ut_create_integer_object((u64) 952dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore temp_desc-> 953dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore buffer. 954dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore pointer 955dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore [operand 956dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore [0]-> 957dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore reference. 958dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore value]); 9591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 9601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 9621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_PACKAGE: 9661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 96844f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * Return the referenced element of the package. We must 96944f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * add another reference to the referenced object, however. 9701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9714be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = 9724be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown *(operand[0]->reference.where); 973f9f4601f331aa1226d7a798a01950efbb388f07fRobert Moore if (return_desc) { 9744be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference 9754be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (return_desc); 9761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 981b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 982f6a22b0bc417042e83117f52ab1a03696af185abBob Moore "Unknown Index TargetType 0x%X in reference object %p", 983b8e4d89357fc434618a59c1047cac72641191805Bob Moore operand[0]->reference. 984b8e4d89357fc434618a59c1047cac72641191805Bob Moore target_type, operand[0])); 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_OPERAND_TYPE; 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9901044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore case ACPI_REFCLASS_REFOF: 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc = operand[0]->reference.object; 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9944be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_GET_DESCRIPTOR_TYPE(return_desc) == 9954be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_DESC_TYPE_NAMED) { 9964be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = 9974be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ns_get_attached_object((struct 9984be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_namespace_node 9994be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown *) 10004be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc); 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Add another reference to the object! */ 10041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10054be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(return_desc); 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 1009b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 1010f6a22b0bc417042e83117f52ab1a03696af185abBob Moore "Unknown class in reference(%p) - 0x%2.2X", 1011b8e4d89357fc434618a59c1047cac72641191805Bob Moore operand[0], 10121044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore operand[0]->reference.class)); 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_TYPE; 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1022f6a22b0bc417042e83117f52ab1a03696af185abBob Moore ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X", 1023b8e4d89357fc434618a59c1047cac72641191805Bob Moore walk_state->opcode)); 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_BAD_OPCODE; 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10284be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown cleanup: 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Delete return object on error */ 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10324be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 10334be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(return_desc); 10341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10368313524a0d466f451a62709aaedf988d8257b21cBob Moore /* Save return object on success */ 10378313524a0d466f451a62709aaedf988d8257b21cBob Moore 10388313524a0d466f451a62709aaedf988d8257b21cBob Moore else { 10398313524a0d466f451a62709aaedf988d8257b21cBob Moore walk_state->result_obj = return_desc; 10408313524a0d466f451a62709aaedf988d8257b21cBob Moore } 10418313524a0d466f451a62709aaedf988d8257b21cBob Moore 10424be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1044