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authorLen Brown <len.brown@intel.com>2009-01-09 00:13:17 -0500
committerLen Brown <len.brown@intel.com>2009-01-09 03:30:47 -0500
commit95b482a8d31116f3f5c2a5089569393234d06385 (patch)
treef32aec8673a285a9d188948be97af3034ee06e93 /drivers/acpi/dispatcher/dsmethod.c
parent6620e0c49f577454b772fb381543d60ae53eb885 (diff)
ACPICA: create acpica/ directory
also, delete sleep/ and delete ACPI_CFLAGS from Makefile Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/dispatcher/dsmethod.c')
-rw-r--r--drivers/acpi/dispatcher/dsmethod.c629
1 files changed, 0 insertions, 629 deletions
diff --git a/drivers/acpi/dispatcher/dsmethod.c b/drivers/acpi/dispatcher/dsmethod.c
deleted file mode 100644
index 333c8560d9f8..000000000000
--- a/drivers/acpi/dispatcher/dsmethod.c
+++ /dev/null
@@ -1,629 +0,0 @@
-/******************************************************************************
- *
- * Module Name: dsmethod - Parser/Interpreter interface - control method parsing
- *
- *****************************************************************************/
-
-/*
- * Copyright (C) 2000 - 2008, Intel Corp.
- * 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.
- */
-
-#include <acpi/acpi.h>
-#include <acpi/accommon.h>
-#include <acpi/amlcode.h>
-#include <acpi/acdispat.h>
-#include <acpi/acinterp.h>
-#include <acpi/acnamesp.h>
-#ifdef ACPI_DISASSEMBLER
-#include <acpi/acdisasm.h>
-#endif
-
-#define _COMPONENT ACPI_DISPATCHER
-ACPI_MODULE_NAME("dsmethod")
-
-/* Local prototypes */
-static acpi_status
-acpi_ds_create_method_mutex(union acpi_operand_object *method_desc);
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ds_method_error
- *
- * PARAMETERS: Status - Execution status
- * walk_state - Current state
- *
- * RETURN: Status
- *
- * DESCRIPTION: Called on method error. Invoke the global exception handler if
- * present, dump the method data if the disassembler is configured
- *
- * Note: Allows the exception handler to change the status code
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ds_method_error(acpi_status status, struct acpi_walk_state *walk_state)
-{
- ACPI_FUNCTION_ENTRY();
-
- /* Ignore AE_OK and control exception codes */
-
- if (ACPI_SUCCESS(status) || (status & AE_CODE_CONTROL)) {
- return (status);
- }
-
- /* Invoke the global exception handler */
-
- if (acpi_gbl_exception_handler) {
-
- /* Exit the interpreter, allow handler to execute methods */
-
- acpi_ex_exit_interpreter();
-
- /*
- * Handler can map the exception code to anything it wants, including
- * AE_OK, in which case the executing method will not be aborted.
- */
- status = acpi_gbl_exception_handler(status,
- walk_state->method_node ?
- walk_state->method_node->
- name.integer : 0,
- walk_state->opcode,
- walk_state->aml_offset,
- NULL);
- acpi_ex_enter_interpreter();
- }
-
- acpi_ds_clear_implicit_return(walk_state);
-
-#ifdef ACPI_DISASSEMBLER
- if (ACPI_FAILURE(status)) {
-
- /* Display method locals/args if disassembler is present */
-
- acpi_dm_dump_method_info(status, walk_state, walk_state->op);
- }
-#endif
-
- return (status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ds_create_method_mutex
- *
- * PARAMETERS: obj_desc - The method object
- *
- * RETURN: Status
- *
- * DESCRIPTION: Create a mutex object for a serialized control method
- *
- ******************************************************************************/
-
-static acpi_status
-acpi_ds_create_method_mutex(union acpi_operand_object *method_desc)
-{
- union acpi_operand_object *mutex_desc;
- acpi_status status;
-
- ACPI_FUNCTION_TRACE(ds_create_method_mutex);
-
- /* Create the new mutex object */
-
- mutex_desc = acpi_ut_create_internal_object(ACPI_TYPE_MUTEX);
- if (!mutex_desc) {
- return_ACPI_STATUS(AE_NO_MEMORY);
- }
-
- /* Create the actual OS Mutex */
-
- status = acpi_os_create_mutex(&mutex_desc->mutex.os_mutex);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- mutex_desc->mutex.sync_level = method_desc->method.sync_level;
- method_desc->method.mutex = mutex_desc;
- return_ACPI_STATUS(AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ds_begin_method_execution
- *
- * PARAMETERS: method_node - Node of the method
- * obj_desc - The method object
- * walk_state - current state, NULL if not yet executing
- * a method.
- *
- * RETURN: Status
- *
- * DESCRIPTION: Prepare a method for execution. Parses the method if necessary,
- * increments the thread count, and waits at the method semaphore
- * for clearance to execute.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ds_begin_method_execution(struct acpi_namespace_node *method_node,
- union acpi_operand_object *obj_desc,
- struct acpi_walk_state *walk_state)
-{
- acpi_status status = AE_OK;
-
- ACPI_FUNCTION_TRACE_PTR(ds_begin_method_execution, method_node);
-
- if (!method_node) {
- return_ACPI_STATUS(AE_NULL_ENTRY);
- }
-
- /* Prevent wraparound of thread count */
-
- if (obj_desc->method.thread_count == ACPI_UINT8_MAX) {
- ACPI_ERROR((AE_INFO,
- "Method reached maximum reentrancy limit (255)"));
- return_ACPI_STATUS(AE_AML_METHOD_LIMIT);
- }
-
- /*
- * If this method is serialized, we need to acquire the method mutex.
- */
- if (obj_desc->method.method_flags & AML_METHOD_SERIALIZED) {
- /*
- * Create a mutex for the method if it is defined to be Serialized
- * and a mutex has not already been created. We defer the mutex creation
- * until a method is actually executed, to minimize the object count
- */
- if (!obj_desc->method.mutex) {
- status = acpi_ds_create_method_mutex(obj_desc);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
- }
-
- /*
- * The current_sync_level (per-thread) must be less than or equal to
- * the sync level of the method. This mechanism provides some
- * deadlock prevention
- *
- * Top-level method invocation has no walk state at this point
- */
- if (walk_state &&
- (walk_state->thread->current_sync_level >
- obj_desc->method.mutex->mutex.sync_level)) {
- ACPI_ERROR((AE_INFO,
- "Cannot acquire Mutex for method [%4.4s], current SyncLevel is too large (%d)",
- acpi_ut_get_node_name(method_node),
- walk_state->thread->current_sync_level));
-
- return_ACPI_STATUS(AE_AML_MUTEX_ORDER);
- }
-
- /*
- * Obtain the method mutex if necessary. Do not acquire mutex for a
- * recursive call.
- */
- if (!walk_state ||
- !obj_desc->method.mutex->mutex.thread_id ||
- (walk_state->thread->thread_id !=
- obj_desc->method.mutex->mutex.thread_id)) {
- /*
- * Acquire the method mutex. This releases the interpreter if we
- * block (and reacquires it before it returns)
- */
- status =
- acpi_ex_system_wait_mutex(obj_desc->method.mutex->
- mutex.os_mutex,
- ACPI_WAIT_FOREVER);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- /* Update the mutex and walk info and save the original sync_level */
-
- if (walk_state) {
- obj_desc->method.mutex->mutex.
- original_sync_level =
- walk_state->thread->current_sync_level;
-
- obj_desc->method.mutex->mutex.thread_id =
- walk_state->thread->thread_id;
- walk_state->thread->current_sync_level =
- obj_desc->method.sync_level;
- } else {
- obj_desc->method.mutex->mutex.
- original_sync_level =
- obj_desc->method.mutex->mutex.sync_level;
- }
- }
-
- /* Always increase acquisition depth */
-
- obj_desc->method.mutex->mutex.acquisition_depth++;
- }
-
- /*
- * Allocate an Owner ID for this method, only if this is the first thread
- * to begin concurrent execution. We only need one owner_id, even if the
- * method is invoked recursively.
- */
- if (!obj_desc->method.owner_id) {
- status = acpi_ut_allocate_owner_id(&obj_desc->method.owner_id);
- if (ACPI_FAILURE(status)) {
- goto cleanup;
- }
- }
-
- /*
- * Increment the method parse tree thread count since it has been
- * reentered one more time (even if it is the same thread)
- */
- obj_desc->method.thread_count++;
- return_ACPI_STATUS(status);
-
- cleanup:
- /* On error, must release the method mutex (if present) */
-
- if (obj_desc->method.mutex) {
- acpi_os_release_mutex(obj_desc->method.mutex->mutex.os_mutex);
- }
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ds_call_control_method
- *
- * PARAMETERS: Thread - Info for this thread
- * this_walk_state - Current walk state
- * Op - Current Op to be walked
- *
- * RETURN: Status
- *
- * DESCRIPTION: Transfer execution to a called control method
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ds_call_control_method(struct acpi_thread_state *thread,
- struct acpi_walk_state *this_walk_state,
- union acpi_parse_object *op)
-{
- acpi_status status;
- struct acpi_namespace_node *method_node;
- struct acpi_walk_state *next_walk_state = NULL;
- union acpi_operand_object *obj_desc;
- struct acpi_evaluate_info *info;
- u32 i;
-
- ACPI_FUNCTION_TRACE_PTR(ds_call_control_method, this_walk_state);
-
- ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
- "Calling method %p, currentstate=%p\n",
- this_walk_state->prev_op, this_walk_state));
-
- /*
- * Get the namespace entry for the control method we are about to call
- */
- method_node = this_walk_state->method_call_node;
- if (!method_node) {
- return_ACPI_STATUS(AE_NULL_ENTRY);
- }
-
- obj_desc = acpi_ns_get_attached_object(method_node);
- if (!obj_desc) {
- return_ACPI_STATUS(AE_NULL_OBJECT);
- }
-
- /* Init for new method, possibly wait on method mutex */
-
- status = acpi_ds_begin_method_execution(method_node, obj_desc,
- this_walk_state);
- if (ACPI_FAILURE(status)) {
- return_ACPI_STATUS(status);
- }
-
- /* Begin method parse/execution. Create a new walk state */
-
- next_walk_state = acpi_ds_create_walk_state(obj_desc->method.owner_id,
- NULL, obj_desc, thread);
- if (!next_walk_state) {
- status = AE_NO_MEMORY;
- goto cleanup;
- }
-
- /*
- * The resolved arguments were put on the previous walk state's operand
- * stack. Operands on the previous walk state stack always
- * start at index 0. Also, null terminate the list of arguments
- */
- this_walk_state->operands[this_walk_state->num_operands] = NULL;
-
- /*
- * Allocate and initialize the evaluation information block
- * TBD: this is somewhat inefficient, should change interface to
- * ds_init_aml_walk. For now, keeps this struct off the CPU stack
- */
- info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_evaluate_info));
- if (!info) {
- return_ACPI_STATUS(AE_NO_MEMORY);
- }
-
- info->parameters = &this_walk_state->operands[0];
-
- status = acpi_ds_init_aml_walk(next_walk_state, NULL, method_node,
- obj_desc->method.aml_start,
- obj_desc->method.aml_length, info,
- ACPI_IMODE_EXECUTE);
-
- ACPI_FREE(info);
- if (ACPI_FAILURE(status)) {
- goto cleanup;
- }
-
- /*
- * Delete the operands on the previous walkstate operand stack
- * (they were copied to new objects)
- */
- for (i = 0; i < obj_desc->method.param_count; i++) {
- acpi_ut_remove_reference(this_walk_state->operands[i]);
- this_walk_state->operands[i] = NULL;
- }
-
- /* Clear the operand stack */
-
- this_walk_state->num_operands = 0;
-
- ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
- "**** Begin nested execution of [%4.4s] **** WalkState=%p\n",
- method_node->name.ascii, next_walk_state));
-
- /* Invoke an internal method if necessary */
-
- if (obj_desc->method.method_flags & AML_METHOD_INTERNAL_ONLY) {
- status = obj_desc->method.implementation(next_walk_state);
- if (status == AE_OK) {
- status = AE_CTRL_TERMINATE;
- }
- }
-
- return_ACPI_STATUS(status);
-
- cleanup:
-
- /* On error, we must terminate the method properly */
-
- acpi_ds_terminate_control_method(obj_desc, next_walk_state);
- if (next_walk_state) {
- acpi_ds_delete_walk_state(next_walk_state);
- }
-
- return_ACPI_STATUS(status);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ds_restart_control_method
- *
- * PARAMETERS: walk_state - State for preempted method (caller)
- * return_desc - Return value from the called method
- *
- * RETURN: Status
- *
- * DESCRIPTION: Restart a method that was preempted by another (nested) method
- * invocation. Handle the return value (if any) from the callee.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ds_restart_control_method(struct acpi_walk_state *walk_state,
- union acpi_operand_object *return_desc)
-{
- acpi_status status;
- int same_as_implicit_return;
-
- ACPI_FUNCTION_TRACE_PTR(ds_restart_control_method, walk_state);
-
- ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
- "****Restart [%4.4s] Op %p ReturnValueFromCallee %p\n",
- acpi_ut_get_node_name(walk_state->method_node),
- walk_state->method_call_op, return_desc));
-
- ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
- " ReturnFromThisMethodUsed?=%X ResStack %p Walk %p\n",
- walk_state->return_used,
- walk_state->results, walk_state));
-
- /* Did the called method return a value? */
-
- if (return_desc) {
-
- /* Is the implicit return object the same as the return desc? */
-
- same_as_implicit_return =
- (walk_state->implicit_return_obj == return_desc);
-
- /* Are we actually going to use the return value? */
-
- if (walk_state->return_used) {
-
- /* Save the return value from the previous method */
-
- status = acpi_ds_result_push(return_desc, walk_state);
- if (ACPI_FAILURE(status)) {
- acpi_ut_remove_reference(return_desc);
- return_ACPI_STATUS(status);
- }
-
- /*
- * Save as THIS method's return value in case it is returned
- * immediately to yet another method
- */
- walk_state->return_desc = return_desc;
- }
-
- /*
- * The following code is the optional support for the so-called
- * "implicit return". Some AML code assumes that the last value of the
- * method is "implicitly" returned to the caller, in the absence of an
- * explicit return value.
- *
- * Just save the last result of the method as the return value.
- *
- * NOTE: this is optional because the ASL language does not actually
- * support this behavior.
- */
- else if (!acpi_ds_do_implicit_return
- (return_desc, walk_state, FALSE)
- || same_as_implicit_return) {
- /*
- * Delete the return value if it will not be used by the
- * calling method or remove one reference if the explicit return
- * is the same as the implicit return value.
- */
- acpi_ut_remove_reference(return_desc);
- }
- }
-
- return_ACPI_STATUS(AE_OK);
-}
-
-/*******************************************************************************
- *
- * FUNCTION: acpi_ds_terminate_control_method
- *
- * PARAMETERS: method_desc - Method object
- * walk_state - State associated with the method
- *
- * RETURN: None
- *
- * DESCRIPTION: Terminate a control method. Delete everything that the method
- * created, delete all locals and arguments, and delete the parse
- * tree if requested.
- *
- * MUTEX: Interpreter is locked
- *
- ******************************************************************************/
-
-void
-acpi_ds_terminate_control_method(union acpi_operand_object *method_desc,
- struct acpi_walk_state *walk_state)
-{
-
- ACPI_FUNCTION_TRACE_PTR(ds_terminate_control_method, walk_state);
-
- /* method_desc is required, walk_state is optional */
-
- if (!method_desc) {
- return_VOID;
- }
-
- if (walk_state) {
-
- /* Delete all arguments and locals */
-
- acpi_ds_method_data_delete_all(walk_state);
-
- /*
- * If method is serialized, release the mutex and restore the
- * current sync level for this thread
- */
- if (method_desc->method.mutex) {
-
- /* Acquisition Depth handles recursive calls */
-
- method_desc->method.mutex->mutex.acquisition_depth--;
- if (!method_desc->method.mutex->mutex.acquisition_depth) {
- walk_state->thread->current_sync_level =
- method_desc->method.mutex->mutex.
- original_sync_level;
-
- acpi_os_release_mutex(method_desc->method.
- mutex->mutex.os_mutex);
- method_desc->method.mutex->mutex.thread_id = NULL;
- }
- }
-
- /*
- * Delete any namespace objects created anywhere within
- * the namespace by the execution of this method
- */
- acpi_ns_delete_namespace_by_owner(method_desc->method.owner_id);
- }
-
- /* Decrement the thread count on the method */
-
- if (method_desc->method.thread_count) {
- method_desc->method.thread_count--;
- } else {
- ACPI_ERROR((AE_INFO, "Invalid zero thread count in method"));
- }
-
- /* Are there any other threads currently executing this method? */
-
- if (method_desc->method.thread_count) {
- /*
- * Additional threads. Do not release the owner_id in this case,
- * we immediately reuse it for the next thread executing this method
- */
- ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
- "*** Completed execution of one thread, %d threads remaining\n",
- method_desc->method.thread_count));
- } else {
- /* This is the only executing thread for this method */
-
- /*
- * Support to dynamically change a method from not_serialized to
- * Serialized if it appears that the method is incorrectly written and
- * does not support multiple thread execution. The best example of this
- * is if such a method creates namespace objects and blocks. A second
- * thread will fail with an AE_ALREADY_EXISTS exception
- *
- * This code is here because we must wait until the last thread exits
- * before creating the synchronization semaphore.
- */
- if ((method_desc->method.method_flags & AML_METHOD_SERIALIZED)
- && (!method_desc->method.mutex)) {
- (void)acpi_ds_create_method_mutex(method_desc);
- }
-
- /* No more threads, we can free the owner_id */
-
- acpi_ut_release_owner_id(&method_desc->method.owner_id);
- }
-
- return_VOID;
-}