11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/****************************************************************************** 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Module Name: exoparg1 - AML execution - opcodes with 1 argument 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *****************************************************************************/ 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 8fbb7a2dc2be493c87399550bdc2ddaa510cdf450Bob Moore * Copyright (C) 2000 - 2014, Intel Corp. 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * All rights reserved. 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Redistribution and use in source and binary forms, with or without 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * modification, are permitted provided that the following conditions 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * are met: 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1. Redistributions of source code must retain the above copyright 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * notice, this list of conditions, and the following disclaimer, 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * without modification. 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2. Redistributions in binary form must reproduce at minimum a disclaimer 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * substantially similar to the "NO WARRANTY" disclaimer below 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * ("Disclaimer") and any redistribution must be conditioned upon 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * including a substantially similar Disclaimer requirement for further 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * binary redistribution. 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3. Neither the names of the above-listed copyright holders nor the names 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * of any contributors may be used to endorse or promote products derived 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * from this software without specific prior written permission. 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Alternatively, this software may be distributed under the terms of the 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * GNU General Public License ("GPL") version 2 as published by the Free 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Software Foundation. 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NO WARRANTY 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * POSSIBILITY OF SUCH DAMAGES. 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <acpi/acpi.h> 45e2f7a7772880458edff1b1cc5a988947229fac26Len Brown#include "accommon.h" 46e2f7a7772880458edff1b1cc5a988947229fac26Len Brown#include "acparser.h" 47e2f7a7772880458edff1b1cc5a988947229fac26Len Brown#include "acdispat.h" 48e2f7a7772880458edff1b1cc5a988947229fac26Len Brown#include "acinterp.h" 49e2f7a7772880458edff1b1cc5a988947229fac26Len Brown#include "amlcode.h" 50e2f7a7772880458edff1b1cc5a988947229fac26Len Brown#include "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 92b229cf92eee616c7cb5ad8cdb35a19b119f00bc8Bob Moore 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 102dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore return_desc = 103dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore acpi_ut_create_integer_object(acpi_os_get_timer()); 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1104be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown default: /* Unknown opcode */ 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 112f6a22b0bc417042e83117f52ab1a03696af185abBob Moore ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X", 113b8e4d89357fc434618a59c1047cac72641191805Bob Moore walk_state->opcode)); 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_BAD_OPCODE; 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11810622bf8ce432e6a53fd3c37163e99e99c9e43eeLv Zhengcleanup: 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Delete return object on error */ 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1224be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if ((ACPI_FAILURE(status)) || walk_state->result_obj) { 1234be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(return_desc); 1244b6e16cf2bacbf328535097fa74f1494b1873c54Bob Moore walk_state->result_obj = NULL; 1254be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown } else { 12688ac00f5a841dcfc5c682000f4a6add0add8caacRobert Moore /* Save the return value */ 12788ac00f5a841dcfc5c682000f4a6add0add8caacRobert Moore 12888ac00f5a841dcfc5c682000f4a6add0add8caacRobert Moore walk_state->result_obj = return_desc; 12988ac00f5a841dcfc5c682000f4a6add0add8caacRobert Moore } 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1314be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************************************************************* 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FUNCTION: acpi_ex_opcode_1A_0T_0R 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * PARAMETERS: walk_state - Current state (contains AML opcode) 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * RETURN: Status 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DESCRIPTION: Execute Type 1 monadic operator with numeric operand on 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * object stack 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ******************************************************************************/ 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1474be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brownacpi_status acpi_ex_opcode_1A_0T_0R(struct acpi_walk_state *walk_state) 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1494be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object **operand = &walk_state->operands[0]; 1504be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_status status = AE_OK; 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 152b229cf92eee616c7cb5ad8cdb35a19b119f00bc8Bob Moore ACPI_FUNCTION_TRACE_STR(ex_opcode_1A_0T_0R, 1534be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ps_get_opcode_name(walk_state->opcode)); 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Examine the AML opcode */ 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (walk_state->opcode) { 1584be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_RELEASE_OP: /* Release (mutex_object) */ 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1604be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_release_mutex(operand[0], walk_state); 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1634be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_RESET_OP: /* Reset (event_object) */ 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1654be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_system_reset_event(operand[0]); 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1684be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_SIGNAL_OP: /* Signal (event_object) */ 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1704be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_system_signal_event(operand[0]); 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1734be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_SLEEP_OP: /* Sleep (msec_time) */ 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 175ada241dcec7eb21ff1690a1ba6213299b743bb5bBob Moore status = acpi_ex_system_do_sleep(operand[0]->integer.value); 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1784be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_STALL_OP: /* Stall (usec_time) */ 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1804be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 1814be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ex_system_do_stall((u32) operand[0]->integer.value); 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1844be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_UNLOAD_OP: /* Unload (Handle) */ 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1864be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_unload_table(operand[0]); 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1894be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown default: /* Unknown opcode */ 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 191f6a22b0bc417042e83117f52ab1a03696af185abBob Moore ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X", 192b8e4d89357fc434618a59c1047cac72641191805Bob Moore walk_state->opcode)); 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_BAD_OPCODE; 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1974be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************************************************************* 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FUNCTION: acpi_ex_opcode_1A_1T_0R 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * PARAMETERS: walk_state - Current state (contains AML opcode) 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * RETURN: Status 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DESCRIPTION: Execute opcode with one argument, one target, and no 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return value. 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ******************************************************************************/ 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2134be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brownacpi_status acpi_ex_opcode_1A_1T_0R(struct acpi_walk_state *walk_state) 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2154be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_status status = AE_OK; 2164be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object **operand = &walk_state->operands[0]; 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 218b229cf92eee616c7cb5ad8cdb35a19b119f00bc8Bob Moore ACPI_FUNCTION_TRACE_STR(ex_opcode_1A_1T_0R, 2194be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ps_get_opcode_name(walk_state->opcode)); 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Examine the AML opcode */ 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (walk_state->opcode) { 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_LOAD_OP: 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2264be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_load_op(operand[0], operand[1], walk_state); 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2294be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown default: /* Unknown opcode */ 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 231f6a22b0bc417042e83117f52ab1a03696af185abBob Moore ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X", 232b8e4d89357fc434618a59c1047cac72641191805Bob Moore walk_state->opcode)); 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_BAD_OPCODE; 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23710622bf8ce432e6a53fd3c37163e99e99c9e43eeLv Zhengcleanup: 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2394be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************************************************************* 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FUNCTION: acpi_ex_opcode_1A_1T_1R 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * PARAMETERS: walk_state - Current state (contains AML opcode) 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * RETURN: Status 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DESCRIPTION: Execute opcode with one argument, one target, and a 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return value. 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ******************************************************************************/ 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2554be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brownacpi_status acpi_ex_opcode_1A_1T_1R(struct acpi_walk_state *walk_state) 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2574be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_status status = AE_OK; 2584be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object **operand = &walk_state->operands[0]; 2594be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object *return_desc = NULL; 2604be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object *return_desc2 = NULL; 2614be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown u32 temp32; 2624be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown u32 i; 2635df7e6cb42da36c7d878239bebc81907b15f3943Bob Moore u64 power_of_ten; 2645df7e6cb42da36c7d878239bebc81907b15f3943Bob Moore u64 digit; 2654be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown 266b229cf92eee616c7cb5ad8cdb35a19b119f00bc8Bob Moore ACPI_FUNCTION_TRACE_STR(ex_opcode_1A_1T_1R, 2674be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ps_get_opcode_name(walk_state->opcode)); 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Examine the AML opcode */ 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (walk_state->opcode) { 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_BIT_NOT_OP: 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_FIND_SET_LEFT_BIT_OP: 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_FIND_SET_RIGHT_BIT_OP: 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_FROM_BCD_OP: 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_TO_BCD_OP: 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case AML_COND_REF_OF_OP: 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Create a return object of type Integer for these opcodes */ 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2814be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (walk_state->opcode) { 2884be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_BIT_NOT_OP: /* Not (Operand, Result) */ 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = ~operand[0]->integer.value; 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2934be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_FIND_SET_LEFT_BIT_OP: /* find_set_left_bit (Operand, Result) */ 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = operand[0]->integer.value; 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Acpi specification describes Integer type as a little 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * endian unsigned value, so this boundary condition is valid. 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (temp32 = 0; return_desc->integer.value && 3024be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown temp32 < ACPI_INTEGER_BIT_SIZE; ++temp32) { 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value >>= 1; 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = temp32; 3071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3094be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_FIND_SET_RIGHT_BIT_OP: /* find_set_right_bit (Operand, Result) */ 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = operand[0]->integer.value; 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The Acpi specification describes Integer type as a little 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * endian unsigned value, so this boundary condition is valid. 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (temp32 = 0; return_desc->integer.value && 3184be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown temp32 < ACPI_INTEGER_BIT_SIZE; ++temp32) { 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value <<= 1; 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Since the bit position is one-based, subtract from 33 (65) */ 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3244c90ece249992c7a2e3fc921e5cdb8eb92193067Bob Moore return_desc->integer.value = 3254c90ece249992c7a2e3fc921e5cdb8eb92193067Bob Moore temp32 == 3264c90ece249992c7a2e3fc921e5cdb8eb92193067Bob Moore 0 ? 0 : (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 * The 64-bit ACPI integer can hold 16 4-bit BCD characters 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (if table is 32-bit, integer can hold 8 BCD characters) 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Convert each 4-bit BCD value 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds power_of_ten = 1; 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = 0; 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds digit = operand[0]->integer.value; 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Convert each BCD digit (each is one nybble wide) */ 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3414be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown for (i = 0; 3424be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (i < acpi_gbl_integer_nybble_width) && (digit > 0); 3434be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown i++) { 34452fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Get the least significant 4-bit BCD digit */ 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds temp32 = ((u32) digit) & 0xF; 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Check the range of the digit */ 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (temp32 > 9) { 352b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 353b8e4d89357fc434618a59c1047cac72641191805Bob Moore "BCD digit too large (not decimal): 0x%X", 354b8e4d89357fc434618a59c1047cac72641191805Bob Moore temp32)); 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_NUMERIC_OVERFLOW; 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Sum the digit into the result with the current power of 10 */ 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3624be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc->integer.value += 3635df7e6cb42da36c7d878239bebc81907b15f3943Bob Moore (((u64) temp32) * power_of_ten); 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Shift to next BCD digit */ 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds digit >>= 4; 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Next power of 10 */ 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds power_of_ten *= 10; 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3754be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TO_BCD_OP: /* to_bcd (Operand, Result) */ 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = 0; 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds digit = operand[0]->integer.value; 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Each BCD digit is one nybble wide */ 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3824be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown for (i = 0; 3834be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (i < acpi_gbl_integer_nybble_width) && (digit > 0); 3844be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown i++) { 3854be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown (void)acpi_ut_short_divide(digit, 10, &digit, 3864be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown &temp32); 3871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 38844f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore /* 38944f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * Insert the BCD digit that resides in the 39044f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * remainder from above 39144f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore */ 3924be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc->integer.value |= 3935df7e6cb42da36c7d878239bebc81907b15f3943Bob Moore (((u64) temp32) << ACPI_MUL_4(i)); 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Overflow if there is any data left in Digit */ 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (digit > 0) { 399b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 400f6a22b0bc417042e83117f52ab1a03696af185abBob Moore "Integer too large to convert to BCD: 0x%8.8X%8.8X", 401b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_FORMAT_UINT64(operand[0]-> 402b8e4d89357fc434618a59c1047cac72641191805Bob Moore integer.value))); 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_NUMERIC_OVERFLOW; 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4084be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_COND_REF_OF_OP: /* cond_ref_of (source_object, Result) */ 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This op is a little strange because the internal return value is 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * different than the return value stored in the result descriptor 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * (There are really two return values) 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4144be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if ((struct acpi_namespace_node *)operand[0] == 4154be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_gbl_root_node) { 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This means that the object does not exist in the namespace, 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return FALSE 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc->integer.value = 0; 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Get the object reference, store it, and remove our reference */ 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4264be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_get_object_reference(operand[0], 4274be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown &return_desc2, 4284be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state); 4294be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4334be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 4344be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ex_store(return_desc2, operand[1], walk_state); 4354be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(return_desc2); 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* The object exists in the namespace, return TRUE */ 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4395df7e6cb42da36c7d878239bebc81907b15f3943Bob Moore return_desc->integer.value = ACPI_UINT64_MAX; 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 4431d1ea1b723d9f239f736b8cf284327cbbf9d15d1Chao Guan 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* No other opcodes get here */ 4451d1ea1b723d9f239f736b8cf284327cbbf9d15d1Chao Guan 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4504be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_STORE_OP: /* Store (Source, Target) */ 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * A store operand is typically a number, string, buffer or lvalue 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Be careful about deleting the source object, 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * since the object itself may have been stored. 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4564be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_store(operand[0], operand[1], walk_state); 4574be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 4584be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* It is possible that the Store already produced a return object */ 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!walk_state->result_obj) { 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 46544f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * Normally, we would remove a reference on the Operand[0] 46644f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * parameter; But since it is being used as the internal return 46744f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * object (meaning we would normally increment it), the two 46844f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * cancel out, and we simply don't do anything. 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds walk_state->result_obj = operand[0]; 4714be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state->operands[0] = NULL; /* Prevent deletion */ 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4734be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4754be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown /* 4764be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown * ACPI 2.0 Opcodes 4774be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown */ 4784be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_COPY_OP: /* Copy (Source, Target) */ 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4804be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 4814be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_copy_iobject_to_iobject(operand[0], &return_desc, 4824be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state); 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4854be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TO_DECSTRING_OP: /* to_decimal_string (Data, Result) */ 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4874be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_convert_to_string(operand[0], &return_desc, 4884be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_EXPLICIT_CONVERT_DECIMAL); 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (return_desc == operand[0]) { 49052fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* No conversion performed, add ref to handle return value */ 4924be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(return_desc); 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4964be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TO_HEXSTRING_OP: /* to_hex_string (Data, Result) */ 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4984be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_convert_to_string(operand[0], &return_desc, 4994be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_EXPLICIT_CONVERT_HEX); 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (return_desc == operand[0]) { 50152fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* No conversion performed, add ref to handle return value */ 5034be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(return_desc); 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5074be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TO_BUFFER_OP: /* to_buffer (Data, Result) */ 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5094be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_convert_to_buffer(operand[0], &return_desc); 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (return_desc == operand[0]) { 51152fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* No conversion performed, add ref to handle return value */ 5134be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(return_desc); 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5174be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_TO_INTEGER_OP: /* to_integer (Data, Result) */ 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5194be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_convert_to_integer(operand[0], &return_desc, 5204be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_ANY_BASE); 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (return_desc == operand[0]) { 52252fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* No conversion performed, add ref to handle return value */ 5244be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_add_reference(return_desc); 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5284be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_SHIFT_LEFT_BIT_OP: /* shift_left_bit (Source, bit_num) */ 5294be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_SHIFT_RIGHT_BIT_OP: /* shift_right_bit (Source, bit_num) */ 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 53144f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore /* These are two obsolete opcodes */ 53244f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore 533b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 534b8e4d89357fc434618a59c1047cac72641191805Bob Moore "%s is obsolete and not implemented", 535b8e4d89357fc434618a59c1047cac72641191805Bob Moore acpi_ps_get_opcode_name(walk_state->opcode))); 5361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_SUPPORT; 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5394be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown default: /* Unknown opcode */ 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 541f6a22b0bc417042e83117f52ab1a03696af185abBob Moore ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X", 542b8e4d89357fc434618a59c1047cac72641191805Bob Moore walk_state->opcode)); 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_BAD_OPCODE; 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5474be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_SUCCESS(status)) { 54852fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore 54944f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore /* Store the return value computed above into the target object */ 55044f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore 5514be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_store(return_desc, operand[1], walk_state); 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 55410622bf8ce432e6a53fd3c37163e99e99c9e43eeLv Zhengcleanup: 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Delete return object on error */ 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5584be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 5594be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(return_desc); 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5628313524a0d466f451a62709aaedf988d8257b21cBob Moore /* Save return object on success */ 5638313524a0d466f451a62709aaedf988d8257b21cBob Moore 5648313524a0d466f451a62709aaedf988d8257b21cBob Moore else if (!walk_state->result_obj) { 5658313524a0d466f451a62709aaedf988d8257b21cBob Moore walk_state->result_obj = return_desc; 5668313524a0d466f451a62709aaedf988d8257b21cBob Moore } 5678313524a0d466f451a62709aaedf988d8257b21cBob Moore 5684be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/******************************************************************************* 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * FUNCTION: acpi_ex_opcode_1A_0T_1R 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * PARAMETERS: walk_state - Current state (contains AML opcode) 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * RETURN: Status 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * DESCRIPTION: Execute opcode with one argument, no target, and a return value 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ******************************************************************************/ 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5834be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brownacpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state) 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5854be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object **operand = &walk_state->operands[0]; 5864be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object *temp_desc; 5874be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown union acpi_operand_object *return_desc = NULL; 5884be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_status status = AE_OK; 5894be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown u32 type; 5905df7e6cb42da36c7d878239bebc81907b15f3943Bob Moore u64 value; 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 592b229cf92eee616c7cb5ad8cdb35a19b119f00bc8Bob Moore ACPI_FUNCTION_TRACE_STR(ex_opcode_1A_0T_1R, 5934be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ps_get_opcode_name(walk_state->opcode)); 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Examine the AML opcode */ 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (walk_state->opcode) { 5984be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_LNOT_OP: /* LNot (Operand) */ 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 600dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore return_desc = acpi_ut_create_integer_object((u64) 0); 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 60773a3090a2160fb01317f5a44af6ee5a064a29625Bob Moore * Set result to ONES (TRUE) if Value == 0. Note: 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * return_desc->Integer.Value is initially == 0 (FALSE) from above. 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!operand[0]->integer.value) { 6115df7e6cb42da36c7d878239bebc81907b15f3943Bob Moore return_desc->integer.value = ACPI_UINT64_MAX; 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6154be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_DECREMENT_OP: /* Decrement (Operand) */ 6164be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_INCREMENT_OP: /* Increment (Operand) */ 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 61873a3090a2160fb01317f5a44af6ee5a064a29625Bob Moore * 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 * Note: The operand is not resolved at this point because we want to 68573a3090a2160fb01317f5a44af6ee5a064a29625Bob Moore * get the associated object, not its value. For example, we don't 68644f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * want to resolve a field_unit to its value, we want the actual 68744f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * field_unit object. 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Get the type of the base object */ 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6924be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 6934be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ex_resolve_multiple(walk_state, operand[0], &type, 6944be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown NULL); 6954be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 6961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 6971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6984c90ece249992c7a2e3fc921e5cdb8eb92193067Bob Moore 6991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Allocate a descriptor to hold the type. */ 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 701dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore return_desc = acpi_ut_create_integer_object((u64) type); 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7084be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_SIZE_OF_OP: /* size_of (source_object) */ 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note: The operand is not resolved at this point because we want to 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * get the associated object, not its value. 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Get the base object */ 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7164be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = acpi_ex_resolve_multiple(walk_state, 7174be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown operand[0], &type, 7184be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown &temp_desc); 7194be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 7211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The type of the base object must be integer, buffer, string, or 72573a3090a2160fb01317f5a44af6ee5a064a29625Bob Moore * package. All others are not supported. 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NOTE: Integer is not specifically supported by the ACPI spec, 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * but is supported implicitly via implicit operand conversion. 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * rather than bother with conversion, we just use the byte width 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * global (4 or 8 bytes). 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (type) { 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_INTEGER: 7341d1ea1b723d9f239f736b8cf284327cbbf9d15d1Chao Guan 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = acpi_gbl_integer_byte_width; 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_STRING: 7391d1ea1b723d9f239f736b8cf284327cbbf9d15d1Chao Guan 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = temp_desc->string.length; 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7438246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming case ACPI_TYPE_BUFFER: 7448246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming 7458246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming /* Buffer arguments may not be evaluated at this point */ 7468246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming 7478246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming status = acpi_ds_get_buffer_arguments(temp_desc); 7488246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming value = temp_desc->buffer.length; 7498246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming break; 7508246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming 7511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_PACKAGE: 7528246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming 7538246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming /* Package arguments may not be evaluated at this point */ 7548246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming 7558246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming status = acpi_ds_get_package_arguments(temp_desc); 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds value = temp_desc->package.count; 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 7601d1ea1b723d9f239f736b8cf284327cbbf9d15d1Chao Guan 761b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 7628246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming "Operand must be Buffer/Integer/String/Package - found type %s", 763b8e4d89357fc434618a59c1047cac72641191805Bob Moore acpi_ut_get_type_name(type))); 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_OPERAND_TYPE; 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7688246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming if (ACPI_FAILURE(status)) { 7698246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming goto cleanup; 7708246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming } 7718246934b7cf99d1f0c053d57890775e5d0df9c33Lin Ming 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Now that we have the size of the object, create a result 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * object to hold the value 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 776dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore return_desc = acpi_ut_create_integer_object(value); 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7834be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_REF_OF_OP: /* ref_of (source_object) */ 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7854be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 7864be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ex_get_object_reference(operand[0], &return_desc, 7874be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state); 7884be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7934be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown case AML_DEREF_OF_OP: /* deref_of (obj_reference | String) */ 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Check for a method local or argument, or standalone String */ 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 79752fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore if (ACPI_GET_DESCRIPTOR_TYPE(operand[0]) == 7984be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_DESC_TYPE_NAMED) { 79952fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore temp_desc = 80052fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore acpi_ns_get_attached_object((struct 80152fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore acpi_namespace_node *) 80252fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore operand[0]); 80352fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore if (temp_desc 8043371c19c294a4cb3649aa4e84606be8a1d999e61Bob Moore && ((temp_desc->common.type == ACPI_TYPE_STRING) 8053371c19c294a4cb3649aa4e84606be8a1d999e61Bob Moore || (temp_desc->common.type == 8063371c19c294a4cb3649aa4e84606be8a1d999e61Bob Moore ACPI_TYPE_LOCAL_REFERENCE))) { 80752fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore operand[0] = temp_desc; 80852fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore acpi_ut_add_reference(temp_desc); 80952fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore } else { 81052fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore status = AE_AML_OPERAND_TYPE; 81152fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore goto cleanup; 81252fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore } 81352fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore } else { 8143371c19c294a4cb3649aa4e84606be8a1d999e61Bob Moore switch ((operand[0])->common.type) { 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_LOCAL_REFERENCE: 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This is a deref_of (local_x | arg_x) 8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Must resolve/dereference the local/arg reference first 8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8211044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore switch (operand[0]->reference.class) { 8221044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore case ACPI_REFCLASS_LOCAL: 8231044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore case ACPI_REFCLASS_ARG: 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Set Operand[0] to the value of the local/arg */ 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8274be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown status = 8284be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ds_method_data_get_value 8291044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore (operand[0]->reference.class, 8301044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore operand[0]->reference.value, 8314be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown walk_state, &temp_desc); 8324be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 8331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 8341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Delete our reference to the input object and 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * point to the object just retrieved 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 8404be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(operand[0]); 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds operand[0] = temp_desc; 8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8441044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore case ACPI_REFCLASS_REFOF: 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Get the object to which the reference refers */ 8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8484be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown temp_desc = 8494be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown operand[0]->reference.object; 8504be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(operand[0]); 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds operand[0] = temp_desc; 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Must be an Index op - handled below */ 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_STRING: 8621d1ea1b723d9f239f736b8cf284327cbbf9d15d1Chao Guan 86352fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore break; 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 86552fc0b026e99b5d5d585095148d997d5634bbc25Bob Moore default: 8661d1ea1b723d9f239f736b8cf284327cbbf9d15d1Chao Guan 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 * The target type for the Index operator must be 9291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * either a Buffer or a Package 9301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (operand[0]->reference.target_type) { 9321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_BUFFER_FIELD: 9331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9344be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown temp_desc = 9354be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown operand[0]->reference.object; 9361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 9381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Create a new object that contains one element of the 9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * buffer -- the element pointed to by the index. 9401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 9411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * NOTE: index into a buffer is NOT a pointer to a 9421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * sub-buffer of the main buffer, it is only a pointer to a 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * single element (byte) of the buffer! 944dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore * 945dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore * Since we are returning the value of the buffer at the 946dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore * indexed location, we don't need to add an additional 947dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore * reference to the buffer itself. 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9494be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = 950dc95a270c684e771b25dce0b60559cc80c033f22Bob Moore acpi_ut_create_integer_object((u64) 9513e8214e5c2bd449b30109d4a098597ab1b7c9fb9Lv Zheng temp_desc->buffer.pointer[operand[0]->reference.value]); 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!return_desc) { 9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_NO_MEMORY; 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case ACPI_TYPE_PACKAGE: 9591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* 96073a3090a2160fb01317f5a44af6ee5a064a29625Bob Moore * Return the referenced element of the package. We must 96144f6c01242da4e162f28d8e1216a8c7a91174605Robert Moore * add another reference to the referenced object, however. 9621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 9634be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = 9644be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown *(operand[0]->reference.where); 965a50abf4842dd7d603a2ad6dcc7f1467fd2a66f03Bob Moore if (!return_desc) { 966a50abf4842dd7d603a2ad6dcc7f1467fd2a66f03Bob Moore /* 967a50abf4842dd7d603a2ad6dcc7f1467fd2a66f03Bob Moore * Element is NULL, do not allow the dereference. 968a50abf4842dd7d603a2ad6dcc7f1467fd2a66f03Bob Moore * This provides compatibility with other ACPI 969a50abf4842dd7d603a2ad6dcc7f1467fd2a66f03Bob Moore * implementations. 970a50abf4842dd7d603a2ad6dcc7f1467fd2a66f03Bob Moore */ 971a50abf4842dd7d603a2ad6dcc7f1467fd2a66f03Bob Moore return_ACPI_STATUS 972a50abf4842dd7d603a2ad6dcc7f1467fd2a66f03Bob Moore (AE_AML_UNINITIALIZED_ELEMENT); 9731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 974a50abf4842dd7d603a2ad6dcc7f1467fd2a66f03Bob Moore 975a50abf4842dd7d603a2ad6dcc7f1467fd2a66f03Bob Moore acpi_ut_add_reference(return_desc); 9761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 980b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 981f6a22b0bc417042e83117f52ab1a03696af185abBob Moore "Unknown Index TargetType 0x%X in reference object %p", 982b8e4d89357fc434618a59c1047cac72641191805Bob Moore operand[0]->reference. 983b8e4d89357fc434618a59c1047cac72641191805Bob Moore target_type, operand[0])); 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_OPERAND_TYPE; 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9891044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore case ACPI_REFCLASS_REFOF: 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return_desc = operand[0]->reference.object; 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9934be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_GET_DESCRIPTOR_TYPE(return_desc) == 9944be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown ACPI_DESC_TYPE_NAMED) { 9954be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc = 9964be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ns_get_attached_object((struct 9974be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_namespace_node 9984be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown *) 9994be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_desc); 100063660e05ec719613b518547b40a1c501c10f0bc4Bob Moore if (!return_desc) { 100163660e05ec719613b518547b40a1c501c10f0bc4Bob Moore break; 100263660e05ec719613b518547b40a1c501c10f0bc4Bob Moore } 100363660e05ec719613b518547b40a1c501c10f0bc4Bob Moore 100463660e05ec719613b518547b40a1c501c10f0bc4Bob Moore /* 100563660e05ec719613b518547b40a1c501c10f0bc4Bob Moore * June 2013: 100663660e05ec719613b518547b40a1c501c10f0bc4Bob Moore * buffer_fields/field_units require additional resolution 100763660e05ec719613b518547b40a1c501c10f0bc4Bob Moore */ 100863660e05ec719613b518547b40a1c501c10f0bc4Bob Moore switch (return_desc->common.type) { 100963660e05ec719613b518547b40a1c501c10f0bc4Bob Moore case ACPI_TYPE_BUFFER_FIELD: 101063660e05ec719613b518547b40a1c501c10f0bc4Bob Moore case ACPI_TYPE_LOCAL_REGION_FIELD: 101163660e05ec719613b518547b40a1c501c10f0bc4Bob Moore case ACPI_TYPE_LOCAL_BANK_FIELD: 101263660e05ec719613b518547b40a1c501c10f0bc4Bob Moore case ACPI_TYPE_LOCAL_INDEX_FIELD: 101363660e05ec719613b518547b40a1c501c10f0bc4Bob Moore 101463660e05ec719613b518547b40a1c501c10f0bc4Bob Moore status = 101563660e05ec719613b518547b40a1c501c10f0bc4Bob Moore acpi_ex_read_data_from_field 101663660e05ec719613b518547b40a1c501c10f0bc4Bob Moore (walk_state, return_desc, 101763660e05ec719613b518547b40a1c501c10f0bc4Bob Moore &temp_desc); 101863660e05ec719613b518547b40a1c501c10f0bc4Bob Moore if (ACPI_FAILURE(status)) { 101963660e05ec719613b518547b40a1c501c10f0bc4Bob Moore goto cleanup; 102063660e05ec719613b518547b40a1c501c10f0bc4Bob Moore } 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 102263660e05ec719613b518547b40a1c501c10f0bc4Bob Moore return_desc = temp_desc; 102363660e05ec719613b518547b40a1c501c10f0bc4Bob Moore break; 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 102563660e05ec719613b518547b40a1c501c10f0bc4Bob Moore default: 102663660e05ec719613b518547b40a1c501c10f0bc4Bob Moore 102763660e05ec719613b518547b40a1c501c10f0bc4Bob Moore /* Add another reference to the object */ 102863660e05ec719613b518547b40a1c501c10f0bc4Bob Moore 102963660e05ec719613b518547b40a1c501c10f0bc4Bob Moore acpi_ut_add_reference 103063660e05ec719613b518547b40a1c501c10f0bc4Bob Moore (return_desc); 103163660e05ec719613b518547b40a1c501c10f0bc4Bob Moore break; 103263660e05ec719613b518547b40a1c501c10f0bc4Bob Moore } 103363660e05ec719613b518547b40a1c501c10f0bc4Bob Moore } 10341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 10371d1ea1b723d9f239f736b8cf284327cbbf9d15d1Chao Guan 1038b8e4d89357fc434618a59c1047cac72641191805Bob Moore ACPI_ERROR((AE_INFO, 1039f6a22b0bc417042e83117f52ab1a03696af185abBob Moore "Unknown class in reference(%p) - 0x%2.2X", 1040b8e4d89357fc434618a59c1047cac72641191805Bob Moore operand[0], 10411044f1f65b7df2aae979e397904c4985eeb99ba2Bob Moore operand[0]->reference.class)); 10421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_TYPE; 10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 10451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1051f6a22b0bc417042e83117f52ab1a03696af185abBob Moore ACPI_ERROR((AE_INFO, "Unknown AML opcode 0x%X", 1052b8e4d89357fc434618a59c1047cac72641191805Bob Moore walk_state->opcode)); 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = AE_AML_BAD_OPCODE; 10541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 105710622bf8ce432e6a53fd3c37163e99e99c9e43eeLv Zhengcleanup: 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Delete return object on error */ 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10614be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown if (ACPI_FAILURE(status)) { 10624be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown acpi_ut_remove_reference(return_desc); 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10658313524a0d466f451a62709aaedf988d8257b21cBob Moore /* Save return object on success */ 10668313524a0d466f451a62709aaedf988d8257b21cBob Moore 10678313524a0d466f451a62709aaedf988d8257b21cBob Moore else { 10688313524a0d466f451a62709aaedf988d8257b21cBob Moore walk_state->result_obj = return_desc; 10698313524a0d466f451a62709aaedf988d8257b21cBob Moore } 10708313524a0d466f451a62709aaedf988d8257b21cBob Moore 10714be44fcd3bf648b782f4460fd06dfae6c42ded4bLen Brown return_ACPI_STATUS(status); 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1073