![Lv Zheng](/assets/img/avatar_default.png)
ACPICA commit b2294cae776f5a66a7697414b21949d307e6856f This patch removes unwanted spaces for typedef. This solution doesn't cover function types. Note that the linuxize result of this commit is very giant and should have many conflicts against the current Linux upstream. Thus it is required to modify the linuxize result of this commit and the commits around it manually in order to have them merged to the Linux upstream. Since this is very costy, we should do this only once, and if we can't ensure to do this only once, we need to revert the Linux code to the wrong indentation result before merging the linuxize result of this commit. Lv Zheng. Link: https://github.com/acpica/acpica/commit/b2294cae Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
758 lines
21 KiB
C
758 lines
21 KiB
C
/******************************************************************************
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*
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* Module Name: dswstate - Dispatcher parse tree walk management routines
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2016, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include <acpi/acpi.h>
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#include "accommon.h"
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#include "acparser.h"
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#include "acdispat.h"
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#include "acnamesp.h"
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#define _COMPONENT ACPI_DISPATCHER
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ACPI_MODULE_NAME("dswstate")
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/* Local prototypes */
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static acpi_status
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acpi_ds_result_stack_push(struct acpi_walk_state *walk_state);
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static acpi_status acpi_ds_result_stack_pop(struct acpi_walk_state *walk_state);
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_result_pop
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*
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* PARAMETERS: object - Where to return the popped object
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* walk_state - Current Walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Pop an object off the top of this walk's result stack
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*
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******************************************************************************/
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acpi_status
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acpi_ds_result_pop(union acpi_operand_object **object,
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struct acpi_walk_state *walk_state)
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{
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u32 index;
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union acpi_generic_state *state;
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acpi_status status;
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ACPI_FUNCTION_NAME(ds_result_pop);
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state = walk_state->results;
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/* Incorrect state of result stack */
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if (state && !walk_state->result_count) {
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ACPI_ERROR((AE_INFO, "No results on result stack"));
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return (AE_AML_INTERNAL);
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}
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if (!state && walk_state->result_count) {
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ACPI_ERROR((AE_INFO, "No result state for result stack"));
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return (AE_AML_INTERNAL);
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}
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/* Empty result stack */
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if (!state) {
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ACPI_ERROR((AE_INFO, "Result stack is empty! State=%p",
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walk_state));
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return (AE_AML_NO_RETURN_VALUE);
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}
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/* Return object of the top element and clean that top element result stack */
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walk_state->result_count--;
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index = (u32)walk_state->result_count % ACPI_RESULTS_FRAME_OBJ_NUM;
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*object = state->results.obj_desc[index];
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if (!*object) {
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ACPI_ERROR((AE_INFO,
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"No result objects on result stack, State=%p",
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walk_state));
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return (AE_AML_NO_RETURN_VALUE);
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}
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state->results.obj_desc[index] = NULL;
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if (index == 0) {
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status = acpi_ds_result_stack_pop(walk_state);
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if (ACPI_FAILURE(status)) {
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return (status);
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}
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}
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
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"Obj=%p [%s] Index=%X State=%p Num=%X\n", *object,
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acpi_ut_get_object_type_name(*object),
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index, walk_state, walk_state->result_count));
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_result_push
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*
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* PARAMETERS: object - Where to return the popped object
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* walk_state - Current Walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Push an object onto the current result stack
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*
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******************************************************************************/
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acpi_status
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acpi_ds_result_push(union acpi_operand_object *object,
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struct acpi_walk_state *walk_state)
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{
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union acpi_generic_state *state;
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acpi_status status;
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u32 index;
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ACPI_FUNCTION_NAME(ds_result_push);
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if (walk_state->result_count > walk_state->result_size) {
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ACPI_ERROR((AE_INFO, "Result stack is full"));
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return (AE_AML_INTERNAL);
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} else if (walk_state->result_count == walk_state->result_size) {
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/* Extend the result stack */
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status = acpi_ds_result_stack_push(walk_state);
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if (ACPI_FAILURE(status)) {
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ACPI_ERROR((AE_INFO,
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"Failed to extend the result stack"));
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return (status);
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}
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}
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if (!(walk_state->result_count < walk_state->result_size)) {
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ACPI_ERROR((AE_INFO, "No free elements in result stack"));
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return (AE_AML_INTERNAL);
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}
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state = walk_state->results;
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if (!state) {
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ACPI_ERROR((AE_INFO, "No result stack frame during push"));
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return (AE_AML_INTERNAL);
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}
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if (!object) {
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ACPI_ERROR((AE_INFO,
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"Null Object! Obj=%p State=%p Num=%u",
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object, walk_state, walk_state->result_count));
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return (AE_BAD_PARAMETER);
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}
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/* Assign the address of object to the top free element of result stack */
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index = (u32)walk_state->result_count % ACPI_RESULTS_FRAME_OBJ_NUM;
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state->results.obj_desc[index] = object;
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walk_state->result_count++;
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Obj=%p [%s] State=%p Num=%X Cur=%X\n",
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object,
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acpi_ut_get_object_type_name((union
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acpi_operand_object *)
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object), walk_state,
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walk_state->result_count,
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walk_state->current_result));
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_result_stack_push
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*
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* PARAMETERS: walk_state - Current Walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Push an object onto the walk_state result stack
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*
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******************************************************************************/
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static acpi_status acpi_ds_result_stack_push(struct acpi_walk_state *walk_state)
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{
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union acpi_generic_state *state;
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ACPI_FUNCTION_NAME(ds_result_stack_push);
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/* Check for stack overflow */
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if (((u32) walk_state->result_size + ACPI_RESULTS_FRAME_OBJ_NUM) >
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ACPI_RESULTS_OBJ_NUM_MAX) {
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ACPI_ERROR((AE_INFO, "Result stack overflow: State=%p Num=%u",
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walk_state, walk_state->result_size));
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return (AE_STACK_OVERFLOW);
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}
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state = acpi_ut_create_generic_state();
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if (!state) {
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return (AE_NO_MEMORY);
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}
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state->common.descriptor_type = ACPI_DESC_TYPE_STATE_RESULT;
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acpi_ut_push_generic_state(&walk_state->results, state);
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/* Increase the length of the result stack by the length of frame */
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walk_state->result_size += ACPI_RESULTS_FRAME_OBJ_NUM;
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Results=%p State=%p\n",
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state, walk_state));
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_result_stack_pop
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*
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* PARAMETERS: walk_state - Current Walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Pop an object off of the walk_state result stack
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*
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******************************************************************************/
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static acpi_status acpi_ds_result_stack_pop(struct acpi_walk_state *walk_state)
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{
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union acpi_generic_state *state;
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ACPI_FUNCTION_NAME(ds_result_stack_pop);
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/* Check for stack underflow */
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if (walk_state->results == NULL) {
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
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"Result stack underflow - State=%p\n",
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walk_state));
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return (AE_AML_NO_OPERAND);
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}
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if (walk_state->result_size < ACPI_RESULTS_FRAME_OBJ_NUM) {
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ACPI_ERROR((AE_INFO, "Insufficient result stack size"));
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return (AE_AML_INTERNAL);
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}
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state = acpi_ut_pop_generic_state(&walk_state->results);
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acpi_ut_delete_generic_state(state);
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/* Decrease the length of result stack by the length of frame */
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walk_state->result_size -= ACPI_RESULTS_FRAME_OBJ_NUM;
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
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"Result=%p RemainingResults=%X State=%p\n",
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state, walk_state->result_count, walk_state));
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_obj_stack_push
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*
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* PARAMETERS: object - Object to push
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* walk_state - Current Walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Push an object onto this walk's object/operand stack
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*
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******************************************************************************/
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acpi_status
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acpi_ds_obj_stack_push(void *object, struct acpi_walk_state *walk_state)
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{
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ACPI_FUNCTION_NAME(ds_obj_stack_push);
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/* Check for stack overflow */
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if (walk_state->num_operands >= ACPI_OBJ_NUM_OPERANDS) {
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ACPI_ERROR((AE_INFO,
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"Object stack overflow! Obj=%p State=%p #Ops=%u",
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object, walk_state, walk_state->num_operands));
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return (AE_STACK_OVERFLOW);
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}
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/* Put the object onto the stack */
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walk_state->operands[walk_state->operand_index] = object;
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walk_state->num_operands++;
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/* For the usual order of filling the operand stack */
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walk_state->operand_index++;
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Obj=%p [%s] State=%p #Ops=%X\n",
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object,
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acpi_ut_get_object_type_name((union
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acpi_operand_object *)
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object), walk_state,
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walk_state->num_operands));
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_obj_stack_pop
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*
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* PARAMETERS: pop_count - Number of objects/entries to pop
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* walk_state - Current Walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Pop this walk's object stack. Objects on the stack are NOT
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* deleted by this routine.
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*
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******************************************************************************/
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acpi_status
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acpi_ds_obj_stack_pop(u32 pop_count, struct acpi_walk_state *walk_state)
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{
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u32 i;
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ACPI_FUNCTION_NAME(ds_obj_stack_pop);
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for (i = 0; i < pop_count; i++) {
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/* Check for stack underflow */
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if (walk_state->num_operands == 0) {
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ACPI_ERROR((AE_INFO,
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"Object stack underflow! Count=%X State=%p #Ops=%u",
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pop_count, walk_state,
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walk_state->num_operands));
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return (AE_STACK_UNDERFLOW);
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}
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/* Just set the stack entry to null */
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walk_state->num_operands--;
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walk_state->operands[walk_state->num_operands] = NULL;
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}
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Count=%X State=%p #Ops=%u\n",
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pop_count, walk_state, walk_state->num_operands));
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return (AE_OK);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_obj_stack_pop_and_delete
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*
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* PARAMETERS: pop_count - Number of objects/entries to pop
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* walk_state - Current Walk state
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*
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* RETURN: Status
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*
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* DESCRIPTION: Pop this walk's object stack and delete each object that is
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* popped off.
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*
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******************************************************************************/
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void
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acpi_ds_obj_stack_pop_and_delete(u32 pop_count,
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struct acpi_walk_state *walk_state)
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{
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s32 i;
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union acpi_operand_object *obj_desc;
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ACPI_FUNCTION_NAME(ds_obj_stack_pop_and_delete);
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if (pop_count == 0) {
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return;
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}
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for (i = (s32)pop_count - 1; i >= 0; i--) {
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if (walk_state->num_operands == 0) {
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return;
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}
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/* Pop the stack and delete an object if present in this stack entry */
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walk_state->num_operands--;
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obj_desc = walk_state->operands[i];
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if (obj_desc) {
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acpi_ut_remove_reference(walk_state->operands[i]);
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walk_state->operands[i] = NULL;
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}
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}
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ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Count=%X State=%p #Ops=%X\n",
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pop_count, walk_state, walk_state->num_operands));
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_get_current_walk_state
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*
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* PARAMETERS: thread - Get current active state for this Thread
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*
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* RETURN: Pointer to the current walk state
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*
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* DESCRIPTION: Get the walk state that is at the head of the list (the "current"
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* walk state.)
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*
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******************************************************************************/
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struct acpi_walk_state *acpi_ds_get_current_walk_state(struct acpi_thread_state
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*thread)
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{
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ACPI_FUNCTION_NAME(ds_get_current_walk_state);
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if (!thread) {
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return (NULL);
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}
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ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Current WalkState %p\n",
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thread->walk_state_list));
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return (thread->walk_state_list);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_push_walk_state
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*
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* PARAMETERS: walk_state - State to push
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* thread - Thread state object
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*
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* RETURN: None
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*
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* DESCRIPTION: Place the Thread state at the head of the state list
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*
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******************************************************************************/
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void
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acpi_ds_push_walk_state(struct acpi_walk_state *walk_state,
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struct acpi_thread_state *thread)
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{
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ACPI_FUNCTION_TRACE(ds_push_walk_state);
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walk_state->next = thread->walk_state_list;
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thread->walk_state_list = walk_state;
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return_VOID;
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_pop_walk_state
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*
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* PARAMETERS: thread - Current thread state
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*
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* RETURN: A walk_state object popped from the thread's stack
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*
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* DESCRIPTION: Remove and return the walkstate object that is at the head of
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* the walk stack for the given walk list. NULL indicates that
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* the list is empty.
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*
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******************************************************************************/
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struct acpi_walk_state *acpi_ds_pop_walk_state(struct acpi_thread_state *thread)
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{
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struct acpi_walk_state *walk_state;
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ACPI_FUNCTION_TRACE(ds_pop_walk_state);
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walk_state = thread->walk_state_list;
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if (walk_state) {
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/* Next walk state becomes the current walk state */
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thread->walk_state_list = walk_state->next;
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/*
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* Don't clear the NEXT field, this serves as an indicator
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* that there is a parent WALK STATE
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* Do Not: walk_state->Next = NULL;
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*/
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}
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return_PTR(walk_state);
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}
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/*******************************************************************************
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*
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* FUNCTION: acpi_ds_create_walk_state
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*
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* PARAMETERS: owner_id - ID for object creation
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* origin - Starting point for this walk
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* method_desc - Method object
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* thread - Current thread state
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*
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* RETURN: Pointer to the new walk state.
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*
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* DESCRIPTION: Allocate and initialize a new walk state. The current walk
|
|
* state is set to this new state.
|
|
*
|
|
******************************************************************************/
|
|
|
|
struct acpi_walk_state *acpi_ds_create_walk_state(acpi_owner_id owner_id,
|
|
union acpi_parse_object
|
|
*origin,
|
|
union acpi_operand_object
|
|
*method_desc,
|
|
struct acpi_thread_state
|
|
*thread)
|
|
{
|
|
struct acpi_walk_state *walk_state;
|
|
|
|
ACPI_FUNCTION_TRACE(ds_create_walk_state);
|
|
|
|
walk_state = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_walk_state));
|
|
if (!walk_state) {
|
|
return_PTR(NULL);
|
|
}
|
|
|
|
walk_state->descriptor_type = ACPI_DESC_TYPE_WALK;
|
|
walk_state->method_desc = method_desc;
|
|
walk_state->owner_id = owner_id;
|
|
walk_state->origin = origin;
|
|
walk_state->thread = thread;
|
|
|
|
walk_state->parser_state.start_op = origin;
|
|
|
|
/* Init the method args/local */
|
|
|
|
#if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY))
|
|
acpi_ds_method_data_init(walk_state);
|
|
#endif
|
|
|
|
/* Put the new state at the head of the walk list */
|
|
|
|
if (thread) {
|
|
acpi_ds_push_walk_state(walk_state, thread);
|
|
}
|
|
|
|
return_PTR(walk_state);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_init_aml_walk
|
|
*
|
|
* PARAMETERS: walk_state - New state to be initialized
|
|
* op - Current parse op
|
|
* method_node - Control method NS node, if any
|
|
* aml_start - Start of AML
|
|
* aml_length - Length of AML
|
|
* info - Method info block (params, etc.)
|
|
* pass_number - 1, 2, or 3
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Initialize a walk state for a pass 1 or 2 parse tree walk
|
|
*
|
|
******************************************************************************/
|
|
|
|
acpi_status
|
|
acpi_ds_init_aml_walk(struct acpi_walk_state *walk_state,
|
|
union acpi_parse_object *op,
|
|
struct acpi_namespace_node *method_node,
|
|
u8 * aml_start,
|
|
u32 aml_length,
|
|
struct acpi_evaluate_info *info, u8 pass_number)
|
|
{
|
|
acpi_status status;
|
|
struct acpi_parse_state *parser_state = &walk_state->parser_state;
|
|
union acpi_parse_object *extra_op;
|
|
|
|
ACPI_FUNCTION_TRACE(ds_init_aml_walk);
|
|
|
|
walk_state->parser_state.aml =
|
|
walk_state->parser_state.aml_start = aml_start;
|
|
walk_state->parser_state.aml_end =
|
|
walk_state->parser_state.pkg_end = aml_start + aml_length;
|
|
|
|
/* The next_op of the next_walk will be the beginning of the method */
|
|
|
|
walk_state->next_op = NULL;
|
|
walk_state->pass_number = pass_number;
|
|
|
|
if (info) {
|
|
walk_state->params = info->parameters;
|
|
walk_state->caller_return_desc = &info->return_object;
|
|
}
|
|
|
|
status = acpi_ps_init_scope(&walk_state->parser_state, op);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
if (method_node) {
|
|
walk_state->parser_state.start_node = method_node;
|
|
walk_state->walk_type = ACPI_WALK_METHOD;
|
|
walk_state->method_node = method_node;
|
|
walk_state->method_desc =
|
|
acpi_ns_get_attached_object(method_node);
|
|
|
|
/* Push start scope on scope stack and make it current */
|
|
|
|
status =
|
|
acpi_ds_scope_stack_push(method_node, ACPI_TYPE_METHOD,
|
|
walk_state);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Init the method arguments */
|
|
|
|
status = acpi_ds_method_data_init_args(walk_state->params,
|
|
ACPI_METHOD_NUM_ARGS,
|
|
walk_state);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
} else {
|
|
/*
|
|
* Setup the current scope.
|
|
* Find a Named Op that has a namespace node associated with it.
|
|
* search upwards from this Op. Current scope is the first
|
|
* Op with a namespace node.
|
|
*/
|
|
extra_op = parser_state->start_op;
|
|
while (extra_op && !extra_op->common.node) {
|
|
extra_op = extra_op->common.parent;
|
|
}
|
|
|
|
if (!extra_op) {
|
|
parser_state->start_node = NULL;
|
|
} else {
|
|
parser_state->start_node = extra_op->common.node;
|
|
}
|
|
|
|
if (parser_state->start_node) {
|
|
|
|
/* Push start scope on scope stack and make it current */
|
|
|
|
status =
|
|
acpi_ds_scope_stack_push(parser_state->start_node,
|
|
parser_state->start_node->
|
|
type, walk_state);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
}
|
|
|
|
status = acpi_ds_init_callbacks(walk_state, pass_number);
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_ds_delete_walk_state
|
|
*
|
|
* PARAMETERS: walk_state - State to delete
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Delete a walk state including all internal data structures
|
|
*
|
|
******************************************************************************/
|
|
|
|
void acpi_ds_delete_walk_state(struct acpi_walk_state *walk_state)
|
|
{
|
|
union acpi_generic_state *state;
|
|
|
|
ACPI_FUNCTION_TRACE_PTR(ds_delete_walk_state, walk_state);
|
|
|
|
if (!walk_state) {
|
|
return_VOID;
|
|
}
|
|
|
|
if (walk_state->descriptor_type != ACPI_DESC_TYPE_WALK) {
|
|
ACPI_ERROR((AE_INFO, "%p is not a valid walk state",
|
|
walk_state));
|
|
return_VOID;
|
|
}
|
|
|
|
/* There should not be any open scopes */
|
|
|
|
if (walk_state->parser_state.scope) {
|
|
ACPI_ERROR((AE_INFO, "%p walk still has a scope list",
|
|
walk_state));
|
|
acpi_ps_cleanup_scope(&walk_state->parser_state);
|
|
}
|
|
|
|
/* Always must free any linked control states */
|
|
|
|
while (walk_state->control_state) {
|
|
state = walk_state->control_state;
|
|
walk_state->control_state = state->common.next;
|
|
|
|
acpi_ut_delete_generic_state(state);
|
|
}
|
|
|
|
/* Always must free any linked parse states */
|
|
|
|
while (walk_state->scope_info) {
|
|
state = walk_state->scope_info;
|
|
walk_state->scope_info = state->common.next;
|
|
|
|
acpi_ut_delete_generic_state(state);
|
|
}
|
|
|
|
/* Always must free any stacked result states */
|
|
|
|
while (walk_state->results) {
|
|
state = walk_state->results;
|
|
walk_state->results = state->common.next;
|
|
|
|
acpi_ut_delete_generic_state(state);
|
|
}
|
|
|
|
ACPI_FREE(walk_state);
|
|
return_VOID;
|
|
}
|