/****************************************************************************** * * Module Name: dsargs - Support for execution of dynamic arguments for static * objects (regions, fields, buffer fields, etc.) * *****************************************************************************/ /* * Copyright (C) 2000 - 2012, 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 "accommon.h" #include "acparser.h" #include "amlcode.h" #include "acdispat.h" #include "acnamesp.h" #define _COMPONENT ACPI_DISPATCHER ACPI_MODULE_NAME("dsargs") /* Local prototypes */ static acpi_status acpi_ds_execute_arguments(struct acpi_namespace_node *node, struct acpi_namespace_node *scope_node, u32 aml_length, u8 *aml_start); /******************************************************************************* * * FUNCTION: acpi_ds_execute_arguments * * PARAMETERS: Node - Object NS node * scope_node - Parent NS node * aml_length - Length of executable AML * aml_start - Pointer to the AML * * RETURN: Status. * * DESCRIPTION: Late (deferred) execution of region or field arguments * ******************************************************************************/ static acpi_status acpi_ds_execute_arguments(struct acpi_namespace_node *node, struct acpi_namespace_node *scope_node, u32 aml_length, u8 *aml_start) { acpi_status status; union acpi_parse_object *op; struct acpi_walk_state *walk_state; ACPI_FUNCTION_TRACE(ds_execute_arguments); /* Allocate a new parser op to be the root of the parsed tree */ op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP); if (!op) { return_ACPI_STATUS(AE_NO_MEMORY); } /* Save the Node for use in acpi_ps_parse_aml */ op->common.node = scope_node; /* Create and initialize a new parser state */ walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL); if (!walk_state) { status = AE_NO_MEMORY; goto cleanup; } status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start, aml_length, NULL, ACPI_IMODE_LOAD_PASS1); if (ACPI_FAILURE(status)) { acpi_ds_delete_walk_state(walk_state); goto cleanup; } /* Mark this parse as a deferred opcode */ walk_state->parse_flags = ACPI_PARSE_DEFERRED_OP; walk_state->deferred_node = node; /* Pass1: Parse the entire declaration */ status = acpi_ps_parse_aml(walk_state); if (ACPI_FAILURE(status)) { goto cleanup; } /* Get and init the Op created above */ op->common.node = node; acpi_ps_delete_parse_tree(op); /* Evaluate the deferred arguments */ op = acpi_ps_alloc_op(AML_INT_EVAL_SUBTREE_OP); if (!op) { return_ACPI_STATUS(AE_NO_MEMORY); } op->common.node = scope_node; /* Create and initialize a new parser state */ walk_state = acpi_ds_create_walk_state(0, NULL, NULL, NULL); if (!walk_state) { status = AE_NO_MEMORY; goto cleanup; } /* Execute the opcode and arguments */ status = acpi_ds_init_aml_walk(walk_state, op, NULL, aml_start, aml_length, NULL, ACPI_IMODE_EXECUTE); if (ACPI_FAILURE(status)) { acpi_ds_delete_walk_state(walk_state); goto cleanup; } /* Mark this execution as a deferred opcode */ walk_state->deferred_node = node; status = acpi_ps_parse_aml(walk_state); cleanup: acpi_ps_delete_parse_tree(op); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_ds_get_buffer_field_arguments * * PARAMETERS: obj_desc - A valid buffer_field object * * RETURN: Status. * * DESCRIPTION: Get buffer_field Buffer and Index. This implements the late * evaluation of these field attributes. * ******************************************************************************/ acpi_status acpi_ds_get_buffer_field_arguments(union acpi_operand_object *obj_desc) { union acpi_operand_object *extra_desc; struct acpi_namespace_node *node; acpi_status status; ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_field_arguments, obj_desc); if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { return_ACPI_STATUS(AE_OK); } /* Get the AML pointer (method object) and buffer_field node */ extra_desc = acpi_ns_get_secondary_object(obj_desc); node = obj_desc->buffer_field.node; ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname(ACPI_TYPE_BUFFER_FIELD, node, NULL)); ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BufferField Arg Init\n", acpi_ut_get_node_name(node))); /* Execute the AML code for the term_arg arguments */ status = acpi_ds_execute_arguments(node, node->parent, extra_desc->extra.aml_length, extra_desc->extra.aml_start); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_ds_get_bank_field_arguments * * PARAMETERS: obj_desc - A valid bank_field object * * RETURN: Status. * * DESCRIPTION: Get bank_field bank_value. This implements the late * evaluation of these field attributes. * ******************************************************************************/ acpi_status acpi_ds_get_bank_field_arguments(union acpi_operand_object *obj_desc) { union acpi_operand_object *extra_desc; struct acpi_namespace_node *node; acpi_status status; ACPI_FUNCTION_TRACE_PTR(ds_get_bank_field_arguments, obj_desc); if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { return_ACPI_STATUS(AE_OK); } /* Get the AML pointer (method object) and bank_field node */ extra_desc = acpi_ns_get_secondary_object(obj_desc); node = obj_desc->bank_field.node; ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname (ACPI_TYPE_LOCAL_BANK_FIELD, node, NULL)); ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] BankField Arg Init\n", acpi_ut_get_node_name(node))); /* Execute the AML code for the term_arg arguments */ status = acpi_ds_execute_arguments(node, node->parent, extra_desc->extra.aml_length, extra_desc->extra.aml_start); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } status = acpi_ut_add_address_range(obj_desc->region.space_id, obj_desc->region.address, obj_desc->region.length, node); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_ds_get_buffer_arguments * * PARAMETERS: obj_desc - A valid Buffer object * * RETURN: Status. * * DESCRIPTION: Get Buffer length and initializer byte list. This implements * the late evaluation of these attributes. * ******************************************************************************/ acpi_status acpi_ds_get_buffer_arguments(union acpi_operand_object *obj_desc) { struct acpi_namespace_node *node; acpi_status status; ACPI_FUNCTION_TRACE_PTR(ds_get_buffer_arguments, obj_desc); if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { return_ACPI_STATUS(AE_OK); } /* Get the Buffer node */ node = obj_desc->buffer.node; if (!node) { ACPI_ERROR((AE_INFO, "No pointer back to namespace node in buffer object %p", obj_desc)); return_ACPI_STATUS(AE_AML_INTERNAL); } ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Buffer Arg Init\n")); /* Execute the AML code for the term_arg arguments */ status = acpi_ds_execute_arguments(node, node, obj_desc->buffer.aml_length, obj_desc->buffer.aml_start); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_ds_get_package_arguments * * PARAMETERS: obj_desc - A valid Package object * * RETURN: Status. * * DESCRIPTION: Get Package length and initializer byte list. This implements * the late evaluation of these attributes. * ******************************************************************************/ acpi_status acpi_ds_get_package_arguments(union acpi_operand_object *obj_desc) { struct acpi_namespace_node *node; acpi_status status; ACPI_FUNCTION_TRACE_PTR(ds_get_package_arguments, obj_desc); if (obj_desc->common.flags & AOPOBJ_DATA_VALID) { return_ACPI_STATUS(AE_OK); } /* Get the Package node */ node = obj_desc->package.node; if (!node) { ACPI_ERROR((AE_INFO, "No pointer back to namespace node in package %p", obj_desc)); return_ACPI_STATUS(AE_AML_INTERNAL); } ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Package Arg Init\n")); /* Execute the AML code for the term_arg arguments */ status = acpi_ds_execute_arguments(node, node, obj_desc->package.aml_length, obj_desc->package.aml_start); return_ACPI_STATUS(status); } /******************************************************************************* * * FUNCTION: acpi_ds_get_region_arguments * * PARAMETERS: obj_desc - A valid region object * * RETURN: Status. * * DESCRIPTION: Get region address and length. This implements the late * evaluation of these region attributes. * ******************************************************************************/ acpi_status acpi_ds_get_region_arguments(union acpi_operand_object *obj_desc) { struct acpi_namespace_node *node; acpi_status status; union acpi_operand_object *extra_desc; ACPI_FUNCTION_TRACE_PTR(ds_get_region_arguments, obj_desc); if (obj_desc->region.flags & AOPOBJ_DATA_VALID) { return_ACPI_STATUS(AE_OK); } extra_desc = acpi_ns_get_secondary_object(obj_desc); if (!extra_desc) { return_ACPI_STATUS(AE_NOT_EXIST); } /* Get the Region node */ node = obj_desc->region.node; ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname (ACPI_TYPE_REGION, node, NULL)); ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "[%4.4s] OpRegion Arg Init at AML %p\n", acpi_ut_get_node_name(node), extra_desc->extra.aml_start)); /* Execute the argument AML */ status = acpi_ds_execute_arguments(node, extra_desc->extra.scope_node, extra_desc->extra.aml_length, extra_desc->extra.aml_start); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } status = acpi_ut_add_address_range(obj_desc->region.space_id, obj_desc->region.address, obj_desc->region.length, node); return_ACPI_STATUS(status); }