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drivers/acpi/acpica/exoparg2.c
16.1 KB
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/****************************************************************************** * * Module Name: exoparg2 - AML execution - opcodes with 2 arguments * *****************************************************************************/ /* |
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* Copyright (C) 2000 - 2008, Intel Corp. |
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* All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions, and the following disclaimer, * without modification. * 2. Redistributions in binary form must reproduce at minimum a disclaimer * substantially similar to the "NO WARRANTY" disclaimer below * ("Disclaimer") and any redistribution must be conditioned upon * including a substantially similar Disclaimer requirement for further * binary redistribution. * 3. Neither the names of the above-listed copyright holders nor the names * of any contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * NO WARRANTY * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGES. */ |
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#include <acpi/acpi.h> |
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#include "accommon.h" #include "acparser.h" #include "acinterp.h" #include "acevents.h" #include "amlcode.h" |
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#define _COMPONENT ACPI_EXECUTER |
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ACPI_MODULE_NAME("exoparg2") |
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/*! * Naming convention for AML interpreter execution routines. * * The routines that begin execution of AML opcodes are named with a common * convention based upon the number of arguments, the number of target operands, * and whether or not a value is returned: * * AcpiExOpcode_xA_yT_zR * * Where: * * xA - ARGUMENTS: The number of arguments (input operands) that are * required for this opcode type (1 through 6 args). * yT - TARGETS: The number of targets (output operands) that are required * for this opcode type (0, 1, or 2 targets). * zR - RETURN VALUE: Indicates whether this opcode type returns a value * as the function return (0 or 1). * * The AcpiExOpcode* functions are called via the Dispatcher component with * fully resolved operands. !*/ |
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/******************************************************************************* * * FUNCTION: acpi_ex_opcode_2A_0T_0R * * PARAMETERS: walk_state - Current walk state * * RETURN: Status * * DESCRIPTION: Execute opcode with two arguments, no target, and no return * value. * * ALLOCATION: Deletes both operands * ******************************************************************************/ |
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acpi_status acpi_ex_opcode_2A_0T_0R(struct acpi_walk_state *walk_state) |
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{ |
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union acpi_operand_object **operand = &walk_state->operands[0]; struct acpi_namespace_node *node; u32 value; acpi_status status = AE_OK; |
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ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_0T_0R, |
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acpi_ps_get_opcode_name(walk_state->opcode)); |
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/* Examine the opcode */ switch (walk_state->opcode) { |
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case AML_NOTIFY_OP: /* Notify (notify_object, notify_value) */ |
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/* The first operand is a namespace node */ |
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node = (struct acpi_namespace_node *)operand[0]; |
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/* Second value is the notify value */ value = (u32) operand[1]->integer.value; |
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/* Are notifies allowed on this object? */ |
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|
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if (!acpi_ev_is_notify_object(node)) { |
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ACPI_ERROR((AE_INFO, "Unexpected notify object type [%s]", acpi_ut_get_type_name(node->type))); |
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status = AE_AML_OPERAND_TYPE; break; } |
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#ifdef ACPI_GPE_NOTIFY_CHECK /* * GPE method wake/notify check. Here, we want to ensure that we |
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* don't receive any "DeviceWake" Notifies from a GPE _Lxx or _Exx |
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* GPE method during system runtime. If we do, the GPE is marked * as "wake-only" and disabled. * * 1) Is the Notify() value == device_wake? * 2) Is this a GPE deferred method? (An _Lxx or _Exx method) * 3) Did the original GPE happen at system runtime? * (versus during wake) * * If all three cases are true, this is a wake-only GPE that should * be disabled at runtime. */ |
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if (value == 2) { /* device_wake */ status = acpi_ev_check_for_wake_only_gpe(walk_state-> gpe_event_info); if (ACPI_FAILURE(status)) { |
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|
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/* AE_WAKE_ONLY_GPE only error, means ignore this notify */ |
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return_ACPI_STATUS(AE_OK) |
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} } #endif /* * Dispatch the notify to the appropriate handler * NOTE: the request is queued for execution after this method * completes. The notify handlers are NOT invoked synchronously * from this thread -- because handlers may in turn run other * control methods. */ |
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status = acpi_ev_queue_notify_request(node, value); |
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break; |
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default: |
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ACPI_ERROR((AE_INFO, "Unknown AML opcode %X", walk_state->opcode)); |
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status = AE_AML_BAD_OPCODE; } |
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return_ACPI_STATUS(status); |
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} |
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/******************************************************************************* * * FUNCTION: acpi_ex_opcode_2A_2T_1R * * PARAMETERS: walk_state - Current walk state * * RETURN: Status * * DESCRIPTION: Execute a dyadic operator (2 operands) with 2 output targets * and one implicit return value. * ******************************************************************************/ |
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acpi_status acpi_ex_opcode_2A_2T_1R(struct acpi_walk_state *walk_state) |
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{ |
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union acpi_operand_object **operand = &walk_state->operands[0]; union acpi_operand_object *return_desc1 = NULL; union acpi_operand_object *return_desc2 = NULL; acpi_status status; |
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|
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ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_2T_1R, |
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acpi_ps_get_opcode_name(walk_state->opcode)); |
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/* Execute the opcode */ |
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switch (walk_state->opcode) { |
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case AML_DIVIDE_OP: /* Divide (Dividend, Divisor, remainder_result quotient_result) */ |
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|
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return_desc1 = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
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if (!return_desc1) { status = AE_NO_MEMORY; goto cleanup; } |
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return_desc2 = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
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if (!return_desc2) { status = AE_NO_MEMORY; goto cleanup; } /* Quotient to return_desc1, remainder to return_desc2 */ |
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status = acpi_ut_divide(operand[0]->integer.value, operand[1]->integer.value, &return_desc1->integer.value, &return_desc2->integer.value); if (ACPI_FAILURE(status)) { |
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goto cleanup; } break; |
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default: |
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ACPI_ERROR((AE_INFO, "Unknown AML opcode %X", walk_state->opcode)); |
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status = AE_AML_BAD_OPCODE; goto cleanup; } |
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/* Store the results to the target reference operands */ |
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status = acpi_ex_store(return_desc2, operand[2], walk_state); if (ACPI_FAILURE(status)) { |
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goto cleanup; } |
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status = acpi_ex_store(return_desc1, operand[3], walk_state); if (ACPI_FAILURE(status)) { |
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goto cleanup; } |
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cleanup: |
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/* * Since the remainder is not returned indirectly, remove a reference to * it. Only the quotient is returned indirectly. */ |
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acpi_ut_remove_reference(return_desc2); |
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|
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if (ACPI_FAILURE(status)) { |
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|
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/* Delete the return object */ |
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acpi_ut_remove_reference(return_desc1); |
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} |
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/* Save return object (the remainder) on success */ else { walk_state->result_obj = return_desc1; } |
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return_ACPI_STATUS(status); |
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} |
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/******************************************************************************* * * FUNCTION: acpi_ex_opcode_2A_1T_1R * * PARAMETERS: walk_state - Current walk state * * RETURN: Status * * DESCRIPTION: Execute opcode with two arguments, one target, and a return * value. * ******************************************************************************/ |
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acpi_status acpi_ex_opcode_2A_1T_1R(struct acpi_walk_state *walk_state) |
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{ |
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union acpi_operand_object **operand = &walk_state->operands[0]; union acpi_operand_object *return_desc = NULL; acpi_integer index; acpi_status status = AE_OK; acpi_size length; |
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ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_1T_1R, |
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acpi_ps_get_opcode_name(walk_state->opcode)); |
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|
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/* Execute the opcode */ |
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if (walk_state->op_info->flags & AML_MATH) { |
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|
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/* All simple math opcodes (add, etc.) */ |
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return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
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if (!return_desc) { status = AE_NO_MEMORY; goto cleanup; } |
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return_desc->integer.value = acpi_ex_do_math_op(walk_state->opcode, operand[0]->integer.value, operand[1]->integer.value); |
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goto store_result_to_target; } |
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switch (walk_state->opcode) { |
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case AML_MOD_OP: /* Mod (Dividend, Divisor, remainder_result (ACPI 2.0) */ |
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return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
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if (!return_desc) { status = AE_NO_MEMORY; goto cleanup; } /* return_desc will contain the remainder */ |
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status = acpi_ut_divide(operand[0]->integer.value, operand[1]->integer.value, NULL, &return_desc->integer.value); |
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break; |
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case AML_CONCAT_OP: /* Concatenate (Data1, Data2, Result) */ |
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|
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status = acpi_ex_do_concatenate(operand[0], operand[1], &return_desc, walk_state); |
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break; |
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case AML_TO_STRING_OP: /* to_string (Buffer, Length, Result) (ACPI 2.0) */ |
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/* * Input object is guaranteed to be a buffer at this point (it may have |
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* been converted.) Copy the raw buffer data to a new object of * type String. |
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*/ /* * Get the length of the new string. It is the smallest of: * 1) Length of the input buffer * 2) Max length as specified in the to_string operator * 3) Length of input buffer up to a zero byte (null terminator) * * NOTE: A length of zero is ok, and will create a zero-length, null * terminated string. */ length = 0; while ((length < operand[0]->buffer.length) && |
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(length < operand[1]->integer.value) && (operand[0]->buffer.pointer[length])) { |
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length++; |
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} /* Allocate a new string object */ |
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return_desc = acpi_ut_create_string_object(length); |
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if (!return_desc) { status = AE_NO_MEMORY; goto cleanup; } |
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/* * Copy the raw buffer data with no transform. * (NULL terminated already) */ |
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ACPI_MEMCPY(return_desc->string.pointer, operand[0]->buffer.pointer, length); |
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break; |
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case AML_CONCAT_RES_OP: /* concatenate_res_template (Buffer, Buffer, Result) (ACPI 2.0) */ |
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|
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status = acpi_ex_concat_template(operand[0], operand[1], &return_desc, walk_state); |
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break; |
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case AML_INDEX_OP: /* Index (Source Index Result) */ |
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/* Create the internal return object */ |
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return_desc = acpi_ut_create_internal_object(ACPI_TYPE_LOCAL_REFERENCE); |
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if (!return_desc) { status = AE_NO_MEMORY; goto cleanup; } |
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/* Initialize the Index reference object */ |
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index = operand[1]->integer.value; |
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return_desc->reference.value = (u32) index; return_desc->reference.class = ACPI_REFCLASS_INDEX; |
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|
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/* * At this point, the Source operand is a String, Buffer, or Package. * Verify that the index is within range. */ |
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switch ((operand[0])->common.type) { |
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case ACPI_TYPE_STRING: |
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|
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if (index >= operand[0]->string.length) { status = AE_AML_STRING_LIMIT; } return_desc->reference.target_type = ACPI_TYPE_BUFFER_FIELD; break; case ACPI_TYPE_BUFFER: if (index >= operand[0]->buffer.length) { status = AE_AML_BUFFER_LIMIT; } return_desc->reference.target_type = ACPI_TYPE_BUFFER_FIELD; break; case ACPI_TYPE_PACKAGE: |
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if (index >= operand[0]->package.count) { |
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status = AE_AML_PACKAGE_LIMIT; |
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} return_desc->reference.target_type = ACPI_TYPE_PACKAGE; |
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return_desc->reference.where = &operand[0]->package.elements[index]; |
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break; |
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default: |
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|
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status = AE_AML_INTERNAL; goto cleanup; } /* Failure means that the Index was beyond the end of the object */ if (ACPI_FAILURE(status)) { ACPI_EXCEPTION((AE_INFO, status, "Index (%X%8.8X) is beyond end of object", ACPI_FORMAT_UINT64(index))); goto cleanup; |
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} /* |
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* Save the target object and add a reference to it for the life |
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* of the index |
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*/ |
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return_desc->reference.object = operand[0]; |
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acpi_ut_add_reference(operand[0]); |
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|
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/* Store the reference to the Target */ |
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status = acpi_ex_store(return_desc, operand[2], walk_state); |
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/* Return the reference */ walk_state->result_obj = return_desc; goto cleanup; |
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default: |
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ACPI_ERROR((AE_INFO, "Unknown AML opcode %X", walk_state->opcode)); |
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status = AE_AML_BAD_OPCODE; break; } |
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store_result_to_target: |
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|
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if (ACPI_SUCCESS(status)) { |
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/* * Store the result of the operation (which is now in return_desc) into * the Target descriptor. */ |
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status = acpi_ex_store(return_desc, operand[2], walk_state); if (ACPI_FAILURE(status)) { |
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goto cleanup; } if (!walk_state->result_obj) { walk_state->result_obj = return_desc; } } |
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cleanup: |
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/* Delete return object on error */ |
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if (ACPI_FAILURE(status)) { acpi_ut_remove_reference(return_desc); |
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walk_state->result_obj = NULL; |
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} |
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return_ACPI_STATUS(status); |
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} |
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/******************************************************************************* * * FUNCTION: acpi_ex_opcode_2A_0T_1R * * PARAMETERS: walk_state - Current walk state * * RETURN: Status * * DESCRIPTION: Execute opcode with 2 arguments, no target, and a return value * ******************************************************************************/ |
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acpi_status acpi_ex_opcode_2A_0T_1R(struct acpi_walk_state *walk_state) |
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{ |
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union acpi_operand_object **operand = &walk_state->operands[0]; union acpi_operand_object *return_desc = NULL; acpi_status status = AE_OK; u8 logical_result = FALSE; |
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|
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ACPI_FUNCTION_TRACE_STR(ex_opcode_2A_0T_1R, |
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acpi_ps_get_opcode_name(walk_state->opcode)); |
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/* Create the internal return object */ |
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return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); |
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if (!return_desc) { status = AE_NO_MEMORY; goto cleanup; } |
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/* Execute the Opcode */ if (walk_state->op_info->flags & AML_LOGICAL_NUMERIC) { |
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|
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/* logical_op (Operand0, Operand1) */ |
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status = acpi_ex_do_logical_numeric_op(walk_state->opcode, operand[0]->integer. value, operand[1]->integer. value, &logical_result); |
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goto store_logical_result; |
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} else if (walk_state->op_info->flags & AML_LOGICAL) { |
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|
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/* logical_op (Operand0, Operand1) */ |
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status = acpi_ex_do_logical_op(walk_state->opcode, operand[0], operand[1], &logical_result); |
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goto store_logical_result; } |
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switch (walk_state->opcode) { |
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case AML_ACQUIRE_OP: /* Acquire (mutex_object, Timeout) */ |
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|
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status = acpi_ex_acquire_mutex(operand[1], operand[0], walk_state); |
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if (status == AE_TIME) { |
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logical_result = TRUE; /* TRUE = Acquire timed out */ |
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status = AE_OK; } break; |
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case AML_WAIT_OP: /* Wait (event_object, Timeout) */ |
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|
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status = acpi_ex_system_wait_event(operand[1], operand[0]); |
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if (status == AE_TIME) { |
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|
516 |
logical_result = TRUE; /* TRUE, Wait timed out */ |
1da177e4c
|
517 518 519 |
status = AE_OK; } break; |
1da177e4c
|
520 |
default: |
b8e4d8935
|
521 522 |
ACPI_ERROR((AE_INFO, "Unknown AML opcode %X", walk_state->opcode)); |
1da177e4c
|
523 524 525 |
status = AE_AML_BAD_OPCODE; goto cleanup; } |
4be44fcd3
|
526 |
store_logical_result: |
1da177e4c
|
527 528 529 530 531 532 533 |
/* * Set return value to according to logical_result. logical TRUE (all ones) * Default is FALSE (zero) */ if (logical_result) { return_desc->integer.value = ACPI_INTEGER_MAX; } |
4be44fcd3
|
534 |
cleanup: |
1da177e4c
|
535 536 |
/* Delete return object on error */ |
4be44fcd3
|
537 538 |
if (ACPI_FAILURE(status)) { acpi_ut_remove_reference(return_desc); |
1da177e4c
|
539 |
} |
4b6e16cf2
|
540 541 542 543 544 |
/* Save return object on success */ else { walk_state->result_obj = return_desc; } |
4be44fcd3
|
545 |
return_ACPI_STATUS(status); |
1da177e4c
|
546 |
} |