diff options
Diffstat (limited to 'drivers/acpi/dispatcher/dsmthdat.c')
| -rw-r--r-- | drivers/acpi/dispatcher/dsmthdat.c | 718 |
1 files changed, 0 insertions, 718 deletions
diff --git a/drivers/acpi/dispatcher/dsmthdat.c b/drivers/acpi/dispatcher/dsmthdat.c deleted file mode 100644 index a1a11996a65..00000000000 --- a/drivers/acpi/dispatcher/dsmthdat.c +++ /dev/null @@ -1,718 +0,0 @@ -/******************************************************************************* - * - * Module Name: dsmthdat - control method arguments and local variables - * - ******************************************************************************/ - -/* - * 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/acdispat.h> -#include <acpi/acnamesp.h> -#include <acpi/acinterp.h> - -#define _COMPONENT ACPI_DISPATCHER -ACPI_MODULE_NAME("dsmthdat") - -/* Local prototypes */ -static void -acpi_ds_method_data_delete_value(u8 type, - u32 index, struct acpi_walk_state *walk_state); - -static acpi_status -acpi_ds_method_data_set_value(u8 type, - u32 index, - union acpi_operand_object *object, - struct acpi_walk_state *walk_state); - -#ifdef ACPI_OBSOLETE_FUNCTIONS -acpi_object_type -acpi_ds_method_data_get_type(u16 opcode, - u32 index, struct acpi_walk_state *walk_state); -#endif - -/******************************************************************************* - * - * FUNCTION: acpi_ds_method_data_init - * - * PARAMETERS: walk_state - Current walk state object - * - * RETURN: Status - * - * DESCRIPTION: Initialize the data structures that hold the method's arguments - * and locals. The data struct is an array of namespace nodes for - * each - this allows ref_of and de_ref_of to work properly for these - * special data types. - * - * NOTES: walk_state fields are initialized to zero by the - * ACPI_ALLOCATE_ZEROED(). - * - * A pseudo-Namespace Node is assigned to each argument and local - * so that ref_of() can return a pointer to the Node. - * - ******************************************************************************/ - -void acpi_ds_method_data_init(struct acpi_walk_state *walk_state) -{ - u32 i; - - ACPI_FUNCTION_TRACE(ds_method_data_init); - - /* Init the method arguments */ - - for (i = 0; i < ACPI_METHOD_NUM_ARGS; i++) { - ACPI_MOVE_32_TO_32(&walk_state->arguments[i].name, - NAMEOF_ARG_NTE); - walk_state->arguments[i].name.integer |= (i << 24); - walk_state->arguments[i].descriptor_type = ACPI_DESC_TYPE_NAMED; - walk_state->arguments[i].type = ACPI_TYPE_ANY; - walk_state->arguments[i].flags = - ANOBJ_END_OF_PEER_LIST | ANOBJ_METHOD_ARG; - } - - /* Init the method locals */ - - for (i = 0; i < ACPI_METHOD_NUM_LOCALS; i++) { - ACPI_MOVE_32_TO_32(&walk_state->local_variables[i].name, - NAMEOF_LOCAL_NTE); - - walk_state->local_variables[i].name.integer |= (i << 24); - walk_state->local_variables[i].descriptor_type = - ACPI_DESC_TYPE_NAMED; - walk_state->local_variables[i].type = ACPI_TYPE_ANY; - walk_state->local_variables[i].flags = - ANOBJ_END_OF_PEER_LIST | ANOBJ_METHOD_LOCAL; - } - - return_VOID; -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_method_data_delete_all - * - * PARAMETERS: walk_state - Current walk state object - * - * RETURN: None - * - * DESCRIPTION: Delete method locals and arguments. Arguments are only - * deleted if this method was called from another method. - * - ******************************************************************************/ - -void acpi_ds_method_data_delete_all(struct acpi_walk_state *walk_state) -{ - u32 index; - - ACPI_FUNCTION_TRACE(ds_method_data_delete_all); - - /* Detach the locals */ - - for (index = 0; index < ACPI_METHOD_NUM_LOCALS; index++) { - if (walk_state->local_variables[index].object) { - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Deleting Local%d=%p\n", - index, - walk_state->local_variables[index]. - object)); - - /* Detach object (if present) and remove a reference */ - - acpi_ns_detach_object(&walk_state-> - local_variables[index]); - } - } - - /* Detach the arguments */ - - for (index = 0; index < ACPI_METHOD_NUM_ARGS; index++) { - if (walk_state->arguments[index].object) { - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Deleting Arg%d=%p\n", - index, - walk_state->arguments[index].object)); - - /* Detach object (if present) and remove a reference */ - - acpi_ns_detach_object(&walk_state->arguments[index]); - } - } - - return_VOID; -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_method_data_init_args - * - * PARAMETERS: *Params - Pointer to a parameter list for the method - * max_param_count - The arg count for this method - * walk_state - Current walk state object - * - * RETURN: Status - * - * DESCRIPTION: Initialize arguments for a method. The parameter list is a list - * of ACPI operand objects, either null terminated or whose length - * is defined by max_param_count. - * - ******************************************************************************/ - -acpi_status -acpi_ds_method_data_init_args(union acpi_operand_object **params, - u32 max_param_count, - struct acpi_walk_state *walk_state) -{ - acpi_status status; - u32 index = 0; - - ACPI_FUNCTION_TRACE_PTR(ds_method_data_init_args, params); - - if (!params) { - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, - "No param list passed to method\n")); - return_ACPI_STATUS(AE_OK); - } - - /* Copy passed parameters into the new method stack frame */ - - while ((index < ACPI_METHOD_NUM_ARGS) && - (index < max_param_count) && params[index]) { - /* - * A valid parameter. - * Store the argument in the method/walk descriptor. - * Do not copy the arg in order to implement call by reference - */ - status = acpi_ds_method_data_set_value(ACPI_REFCLASS_ARG, index, - params[index], - walk_state); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - index++; - } - - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "%d args passed to method\n", index)); - return_ACPI_STATUS(AE_OK); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_method_data_get_node - * - * PARAMETERS: Type - Either ACPI_REFCLASS_LOCAL or - * ACPI_REFCLASS_ARG - * Index - Which Local or Arg whose type to get - * walk_state - Current walk state object - * Node - Where the node is returned. - * - * RETURN: Status and node - * - * DESCRIPTION: Get the Node associated with a local or arg. - * - ******************************************************************************/ - -acpi_status -acpi_ds_method_data_get_node(u8 type, - u32 index, - struct acpi_walk_state *walk_state, - struct acpi_namespace_node **node) -{ - ACPI_FUNCTION_TRACE(ds_method_data_get_node); - - /* - * Method Locals and Arguments are supported - */ - switch (type) { - case ACPI_REFCLASS_LOCAL: - - if (index > ACPI_METHOD_MAX_LOCAL) { - ACPI_ERROR((AE_INFO, - "Local index %d is invalid (max %d)", - index, ACPI_METHOD_MAX_LOCAL)); - return_ACPI_STATUS(AE_AML_INVALID_INDEX); - } - - /* Return a pointer to the pseudo-node */ - - *node = &walk_state->local_variables[index]; - break; - - case ACPI_REFCLASS_ARG: - - if (index > ACPI_METHOD_MAX_ARG) { - ACPI_ERROR((AE_INFO, - "Arg index %d is invalid (max %d)", - index, ACPI_METHOD_MAX_ARG)); - return_ACPI_STATUS(AE_AML_INVALID_INDEX); - } - - /* Return a pointer to the pseudo-node */ - - *node = &walk_state->arguments[index]; - break; - - default: - ACPI_ERROR((AE_INFO, "Type %d is invalid", type)); - return_ACPI_STATUS(AE_TYPE); - } - - return_ACPI_STATUS(AE_OK); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_method_data_set_value - * - * PARAMETERS: Type - Either ACPI_REFCLASS_LOCAL or - * ACPI_REFCLASS_ARG - * Index - Which Local or Arg to get - * Object - Object to be inserted into the stack entry - * walk_state - Current walk state object - * - * RETURN: Status - * - * DESCRIPTION: Insert an object onto the method stack at entry Opcode:Index. - * Note: There is no "implicit conversion" for locals. - * - ******************************************************************************/ - -static acpi_status -acpi_ds_method_data_set_value(u8 type, - u32 index, - union acpi_operand_object *object, - struct acpi_walk_state *walk_state) -{ - acpi_status status; - struct acpi_namespace_node *node; - - ACPI_FUNCTION_TRACE(ds_method_data_set_value); - - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, - "NewObj %p Type %2.2X, Refs=%d [%s]\n", object, - type, object->common.reference_count, - acpi_ut_get_type_name(object->common.type))); - - /* Get the namespace node for the arg/local */ - - status = acpi_ds_method_data_get_node(type, index, walk_state, &node); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* - * Increment ref count so object can't be deleted while installed. - * NOTE: We do not copy the object in order to preserve the call by - * reference semantics of ACPI Control Method invocation. - * (See ACPI Specification 2.0_c) - */ - acpi_ut_add_reference(object); - - /* Install the object */ - - node->object = object; - return_ACPI_STATUS(status); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_method_data_get_value - * - * PARAMETERS: Type - Either ACPI_REFCLASS_LOCAL or - * ACPI_REFCLASS_ARG - * Index - Which local_var or argument to get - * walk_state - Current walk state object - * dest_desc - Where Arg or Local value is returned - * - * RETURN: Status - * - * DESCRIPTION: Retrieve value of selected Arg or Local for this method - * Used only in acpi_ex_resolve_to_value(). - * - ******************************************************************************/ - -acpi_status -acpi_ds_method_data_get_value(u8 type, - u32 index, - struct acpi_walk_state *walk_state, - union acpi_operand_object **dest_desc) -{ - acpi_status status; - struct acpi_namespace_node *node; - union acpi_operand_object *object; - - ACPI_FUNCTION_TRACE(ds_method_data_get_value); - - /* Validate the object descriptor */ - - if (!dest_desc) { - ACPI_ERROR((AE_INFO, "Null object descriptor pointer")); - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - /* Get the namespace node for the arg/local */ - - status = acpi_ds_method_data_get_node(type, index, walk_state, &node); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Get the object from the node */ - - object = node->object; - - /* Examine the returned object, it must be valid. */ - - if (!object) { - /* - * Index points to uninitialized object. - * This means that either 1) The expected argument was - * not passed to the method, or 2) A local variable - * was referenced by the method (via the ASL) - * before it was initialized. Either case is an error. - */ - - /* If slack enabled, init the local_x/arg_x to an Integer of value zero */ - - if (acpi_gbl_enable_interpreter_slack) { - object = - acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); - if (!object) { - return_ACPI_STATUS(AE_NO_MEMORY); - } - - object->integer.value = 0; - node->object = object; - } - - /* Otherwise, return the error */ - - else - switch (type) { - case ACPI_REFCLASS_ARG: - - ACPI_ERROR((AE_INFO, - "Uninitialized Arg[%d] at node %p", - index, node)); - - return_ACPI_STATUS(AE_AML_UNINITIALIZED_ARG); - - case ACPI_REFCLASS_LOCAL: - - ACPI_ERROR((AE_INFO, - "Uninitialized Local[%d] at node %p", - index, node)); - - return_ACPI_STATUS(AE_AML_UNINITIALIZED_LOCAL); - - default: - - ACPI_ERROR((AE_INFO, - "Not a Arg/Local opcode: %X", - type)); - return_ACPI_STATUS(AE_AML_INTERNAL); - } - } - - /* - * The Index points to an initialized and valid object. - * Return an additional reference to the object - */ - *dest_desc = object; - acpi_ut_add_reference(object); - - return_ACPI_STATUS(AE_OK); -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_method_data_delete_value - * - * PARAMETERS: Type - Either ACPI_REFCLASS_LOCAL or - * ACPI_REFCLASS_ARG - * Index - Which local_var or argument to delete - * walk_state - Current walk state object - * - * RETURN: None - * - * DESCRIPTION: Delete the entry at Opcode:Index. Inserts - * a null into the stack slot after the object is deleted. - * - ******************************************************************************/ - -static void -acpi_ds_method_data_delete_value(u8 type, - u32 index, struct acpi_walk_state *walk_state) -{ - acpi_status status; - struct acpi_namespace_node *node; - union acpi_operand_object *object; - - ACPI_FUNCTION_TRACE(ds_method_data_delete_value); - - /* Get the namespace node for the arg/local */ - - status = acpi_ds_method_data_get_node(type, index, walk_state, &node); - if (ACPI_FAILURE(status)) { - return_VOID; - } - - /* Get the associated object */ - - object = acpi_ns_get_attached_object(node); - - /* - * Undefine the Arg or Local by setting its descriptor - * pointer to NULL. Locals/Args can contain both - * ACPI_OPERAND_OBJECTS and ACPI_NAMESPACE_NODEs - */ - node->object = NULL; - - if ((object) && - (ACPI_GET_DESCRIPTOR_TYPE(object) == ACPI_DESC_TYPE_OPERAND)) { - /* - * There is a valid object. - * Decrement the reference count by one to balance the - * increment when the object was stored. - */ - acpi_ut_remove_reference(object); - } - - return_VOID; -} - -/******************************************************************************* - * - * FUNCTION: acpi_ds_store_object_to_local - * - * PARAMETERS: Type - Either ACPI_REFCLASS_LOCAL or - * ACPI_REFCLASS_ARG - * Index - Which Local or Arg to set - * obj_desc - Value to be stored - * walk_state - Current walk state - * - * RETURN: Status - * - * DESCRIPTION: Store a value in an Arg or Local. The obj_desc is installed - * as the new value for the Arg or Local and the reference count - * for obj_desc is incremented. - * - ******************************************************************************/ - -acpi_status -acpi_ds_store_object_to_local(u8 type, - u32 index, - union acpi_operand_object *obj_desc, - struct acpi_walk_state *walk_state) -{ - acpi_status status; - struct acpi_namespace_node *node; - union acpi_operand_object *current_obj_desc; - union acpi_operand_object *new_obj_desc; - - ACPI_FUNCTION_TRACE(ds_store_object_to_local); - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Type=%2.2X Index=%d Obj=%p\n", - type, index, obj_desc)); - - /* Parameter validation */ - - if (!obj_desc) { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - /* Get the namespace node for the arg/local */ - - status = acpi_ds_method_data_get_node(type, index, walk_state, &node); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - current_obj_desc = acpi_ns_get_attached_object(node); - if (current_obj_desc == obj_desc) { - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Obj=%p already installed!\n", - obj_desc)); - return_ACPI_STATUS(status); - } - - /* - * If the reference count on the object is more than one, we must - * take a copy of the object before we store. A reference count - * of exactly 1 means that the object was just created during the - * evaluation of an expression, and we can safely use it since it - * is not used anywhere else. - */ - new_obj_desc = obj_desc; - if (obj_desc->common.reference_count > 1) { - status = - acpi_ut_copy_iobject_to_iobject(obj_desc, &new_obj_desc, - walk_state); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - } - - /* - * If there is an object already in this slot, we either - * have to delete it, or if this is an argument and there - * is an object reference stored there, we have to do - * an indirect store! - */ - if (current_obj_desc) { - /* - * Check for an indirect store if an argument - * contains an object reference (stored as an Node). - * We don't allow this automatic dereferencing for - * locals, since a store to a local should overwrite - * anything there, including an object reference. - * - * If both Arg0 and Local0 contain ref_of (Local4): - * - * Store (1, Arg0) - Causes indirect store to local4 - * Store (1, Local0) - Stores 1 in local0, overwriting - * the reference to local4 - * Store (1, de_refof (Local0)) - Causes indirect store to local4 - * - * Weird, but true. - */ - if (type == ACPI_REFCLASS_ARG) { - /* - * If we have a valid reference object that came from ref_of(), - * do the indirect store - */ - if ((ACPI_GET_DESCRIPTOR_TYPE(current_obj_desc) == - ACPI_DESC_TYPE_OPERAND) - && (current_obj_desc->common.type == - ACPI_TYPE_LOCAL_REFERENCE) - && (current_obj_desc->reference.class == - ACPI_REFCLASS_REFOF)) { - ACPI_DEBUG_PRINT((ACPI_DB_EXEC, - "Arg (%p) is an ObjRef(Node), storing in node %p\n", - new_obj_desc, - current_obj_desc)); - - /* - * Store this object to the Node (perform the indirect store) - * NOTE: No implicit conversion is performed, as per the ACPI - * specification rules on storing to Locals/Args. - */ - status = - acpi_ex_store_object_to_node(new_obj_desc, - current_obj_desc-> - reference. - object, - walk_state, - ACPI_NO_IMPLICIT_CONVERSION); - - /* Remove local reference if we copied the object above */ - - if (new_obj_desc != obj_desc) { - acpi_ut_remove_reference(new_obj_desc); - } - return_ACPI_STATUS(status); - } - } - - /* Delete the existing object before storing the new one */ - - acpi_ds_method_data_delete_value(type, index, walk_state); - } - - /* - * Install the Obj descriptor (*new_obj_desc) into - * the descriptor for the Arg or Local. - * (increments the object reference count by one) - */ - status = - acpi_ds_method_data_set_value(type, index, new_obj_desc, - walk_state); - - /* Remove local reference if we copied the object above */ - - if (new_obj_desc != obj_desc) { - acpi_ut_remove_reference(new_obj_desc); - } - - return_ACPI_STATUS(status); -} - -#ifdef ACPI_OBSOLETE_FUNCTIONS -/******************************************************************************* - * - * FUNCTION: acpi_ds_method_data_get_type - * - * PARAMETERS: Opcode - Either AML_LOCAL_OP or AML_ARG_OP - * Index - Which Local or Arg whose type to get - * walk_state - Current walk state object - * - * RETURN: Data type of current value of the selected Arg or Local - * - * DESCRIPTION: Get the type of the object stored in the Local or Arg - * - ******************************************************************************/ - -acpi_object_type -acpi_ds_method_data_get_type(u16 opcode, - u32 index, struct acpi_walk_state *walk_state) -{ - acpi_status status; - struct acpi_namespace_node *node; - union acpi_operand_object *object; - - ACPI_FUNCTION_TRACE(ds_method_data_get_type); - - /* Get the namespace node for the arg/local */ - - status = acpi_ds_method_data_get_node(opcode, index, walk_state, &node); - if (ACPI_FAILURE(status)) { - return_VALUE((ACPI_TYPE_NOT_FOUND)); - } - - /* Get the object */ - - object = acpi_ns_get_attached_object(node); - if (!object) { - - /* Uninitialized local/arg, return TYPE_ANY */ - - return_VALUE(ACPI_TYPE_ANY); - } - - /* Get the object type */ - - return_VALUE(ACPI_GET_OBJECT_TYPE(object)); -} -#endif |