--- /dev/null
+/******************************************************************************
+ *
+ * Module Name: dswload2 - Dispatcher second pass namespace load callbacks
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2015, 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 "acinterp.h"
+#include "acnamesp.h"
+#include "acevents.h"
+
+#define _COMPONENT ACPI_DISPATCHER
+ACPI_MODULE_NAME("dswload2")
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_load2_begin_op
+ *
+ * PARAMETERS: walk_state - Current state of the parse tree walk
+ * out_op - Wher to return op if a new one is created
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Descending callback used during the loading of ACPI tables.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state,
+ union acpi_parse_object **out_op)
+{
+ union acpi_parse_object *op;
+ struct acpi_namespace_node *node;
+ acpi_status status;
+ acpi_object_type object_type;
+ char *buffer_ptr;
+ u32 flags;
+
+ ACPI_FUNCTION_TRACE(ds_load2_begin_op);
+
+ op = walk_state->op;
+ ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Op=%p State=%p\n", op,
+ walk_state));
+
+ if (op) {
+ if ((walk_state->control_state) &&
+ (walk_state->control_state->common.state ==
+ ACPI_CONTROL_CONDITIONAL_EXECUTING)) {
+
+ /* We are executing a while loop outside of a method */
+
+ status = acpi_ds_exec_begin_op(walk_state, out_op);
+ return_ACPI_STATUS(status);
+ }
+
+ /* We only care about Namespace opcodes here */
+
+ if ((!(walk_state->op_info->flags & AML_NSOPCODE) &&
+ (walk_state->opcode != AML_INT_NAMEPATH_OP)) ||
+ (!(walk_state->op_info->flags & AML_NAMED))) {
+ return_ACPI_STATUS(AE_OK);
+ }
+
+ /* Get the name we are going to enter or lookup in the namespace */
+
+ if (walk_state->opcode == AML_INT_NAMEPATH_OP) {
+
+ /* For Namepath op, get the path string */
+
+ buffer_ptr = op->common.value.string;
+ if (!buffer_ptr) {
+
+ /* No name, just exit */
+
+ return_ACPI_STATUS(AE_OK);
+ }
+ } else {
+ /* Get name from the op */
+
+ buffer_ptr = ACPI_CAST_PTR(char, &op->named.name);
+ }
+ } else {
+ /* Get the namestring from the raw AML */
+
+ buffer_ptr =
+ acpi_ps_get_next_namestring(&walk_state->parser_state);
+ }
+
+ /* Map the opcode into an internal object type */
+
+ object_type = walk_state->op_info->object_type;
+
+ ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+ "State=%p Op=%p Type=%X\n", walk_state, op,
+ object_type));
+
+ switch (walk_state->opcode) {
+ case AML_FIELD_OP:
+ case AML_BANK_FIELD_OP:
+ case AML_INDEX_FIELD_OP:
+
+ node = NULL;
+ status = AE_OK;
+ break;
+
+ case AML_INT_NAMEPATH_OP:
+ /*
+ * The name_path is an object reference to an existing object.
+ * Don't enter the name into the namespace, but look it up
+ * for use later.
+ */
+ status =
+ acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
+ object_type, ACPI_IMODE_EXECUTE,
+ ACPI_NS_SEARCH_PARENT, walk_state, &(node));
+ break;
+
+ case AML_SCOPE_OP:
+
+ /* Special case for Scope(\) -> refers to the Root node */
+
+ if (op && (op->named.node == acpi_gbl_root_node)) {
+ node = op->named.node;
+
+ status =
+ acpi_ds_scope_stack_push(node, object_type,
+ walk_state);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+ } else {
+ /*
+ * The Path is an object reference to an existing object.
+ * Don't enter the name into the namespace, but look it up
+ * for use later.
+ */
+ status =
+ acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
+ object_type, ACPI_IMODE_EXECUTE,
+ ACPI_NS_SEARCH_PARENT, walk_state,
+ &(node));
+ if (ACPI_FAILURE(status)) {
+#ifdef ACPI_ASL_COMPILER
+ if (status == AE_NOT_FOUND) {
+ status = AE_OK;
+ } else {
+ ACPI_ERROR_NAMESPACE(buffer_ptr,
+ status);
+ }
+#else
+ ACPI_ERROR_NAMESPACE(buffer_ptr, status);
+#endif
+ return_ACPI_STATUS(status);
+ }
+ }
+
+ /*
+ * We must check to make sure that the target is
+ * one of the opcodes that actually opens a scope
+ */
+ switch (node->type) {
+ case ACPI_TYPE_ANY:
+ case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
+ case ACPI_TYPE_DEVICE:
+ case ACPI_TYPE_POWER:
+ case ACPI_TYPE_PROCESSOR:
+ case ACPI_TYPE_THERMAL:
+
+ /* These are acceptable types */
+ break;
+
+ case ACPI_TYPE_INTEGER:
+ case ACPI_TYPE_STRING:
+ case ACPI_TYPE_BUFFER:
+
+ /*
+ * These types we will allow, but we will change the type.
+ * This enables some existing code of the form:
+ *
+ * Name (DEB, 0)
+ * Scope (DEB) { ... }
+ */
+ ACPI_WARNING((AE_INFO,
+ "Type override - [%4.4s] had invalid type (%s) "
+ "for Scope operator, changed to type ANY",
+ acpi_ut_get_node_name(node),
+ acpi_ut_get_type_name(node->type)));
+
+ node->type = ACPI_TYPE_ANY;
+ walk_state->scope_info->common.value = ACPI_TYPE_ANY;
+ break;
+
+ case ACPI_TYPE_METHOD:
+
+ /*
+ * Allow scope change to root during execution of module-level
+ * code. Root is typed METHOD during this time.
+ */
+ if ((node == acpi_gbl_root_node) &&
+ (walk_state->
+ parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
+ break;
+ }
+
+ /*lint -fallthrough */
+
+ default:
+
+ /* All other types are an error */
+
+ ACPI_ERROR((AE_INFO,
+ "Invalid type (%s) for target of "
+ "Scope operator [%4.4s] (Cannot override)",
+ acpi_ut_get_type_name(node->type),
+ acpi_ut_get_node_name(node)));
+
+ return_ACPI_STATUS(AE_AML_OPERAND_TYPE);
+ }
+ break;
+
+ default:
+
+ /* All other opcodes */
+
+ if (op && op->common.node) {
+
+ /* This op/node was previously entered into the namespace */
+
+ node = op->common.node;
+
+ if (acpi_ns_opens_scope(object_type)) {
+ status =
+ acpi_ds_scope_stack_push(node, object_type,
+ walk_state);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+ }
+
+ return_ACPI_STATUS(AE_OK);
+ }
+
+ /*
+ * Enter the named type into the internal namespace. We enter the name
+ * as we go downward in the parse tree. Any necessary subobjects that
+ * involve arguments to the opcode must be created as we go back up the
+ * parse tree later.
+ *
+ * Note: Name may already exist if we are executing a deferred opcode.
+ */
+ if (walk_state->deferred_node) {
+
+ /* This name is already in the namespace, get the node */
+
+ node = walk_state->deferred_node;
+ status = AE_OK;
+ break;
+ }
+
+ flags = ACPI_NS_NO_UPSEARCH;
+ if (walk_state->pass_number == ACPI_IMODE_EXECUTE) {
+
+ /* Execution mode, node cannot already exist, node is temporary */
+
+ flags |= ACPI_NS_ERROR_IF_FOUND;
+
+ if (!
+ (walk_state->
+ parse_flags & ACPI_PARSE_MODULE_LEVEL)) {
+ flags |= ACPI_NS_TEMPORARY;
+ }
+ }
+
+ /* Add new entry or lookup existing entry */
+
+ status =
+ acpi_ns_lookup(walk_state->scope_info, buffer_ptr,
+ object_type, ACPI_IMODE_LOAD_PASS2, flags,
+ walk_state, &node);
+
+ if (ACPI_SUCCESS(status) && (flags & ACPI_NS_TEMPORARY)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+ "***New Node [%4.4s] %p is temporary\n",
+ acpi_ut_get_node_name(node), node));
+ }
+ break;
+ }
+
+ if (ACPI_FAILURE(status)) {
+ ACPI_ERROR_NAMESPACE(buffer_ptr, status);
+ return_ACPI_STATUS(status);
+ }
+
+ if (!op) {
+
+ /* Create a new op */
+
+ op = acpi_ps_alloc_op(walk_state->opcode);
+ if (!op) {
+ return_ACPI_STATUS(AE_NO_MEMORY);
+ }
+
+ /* Initialize the new op */
+
+ if (node) {
+ op->named.name = node->name.integer;
+ }
+ *out_op = op;
+ }
+
+ /*
+ * Put the Node in the "op" object that the parser uses, so we
+ * can get it again quickly when this scope is closed
+ */
+ op->common.node = node;
+ return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ds_load2_end_op
+ *
+ * PARAMETERS: walk_state - Current state of the parse tree walk
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Ascending callback used during the loading of the namespace,
+ * both control methods and everything else.
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ds_load2_end_op(struct acpi_walk_state *walk_state)
+{
+ union acpi_parse_object *op;
+ acpi_status status = AE_OK;
+ acpi_object_type object_type;
+ struct acpi_namespace_node *node;
+ union acpi_parse_object *arg;
+ struct acpi_namespace_node *new_node;
+#ifndef ACPI_NO_METHOD_EXECUTION
+ u32 i;
+ u8 region_space;
+#endif
+
+ ACPI_FUNCTION_TRACE(ds_load2_end_op);
+
+ op = walk_state->op;
+ ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
+ walk_state->op_info->name, op, walk_state));
+
+ /* Check if opcode had an associated namespace object */
+
+ if (!(walk_state->op_info->flags & AML_NSOBJECT)) {
+ return_ACPI_STATUS(AE_OK);
+ }
+
+ if (op->common.aml_opcode == AML_SCOPE_OP) {
+ ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+ "Ending scope Op=%p State=%p\n", op,
+ walk_state));
+ }
+
+ object_type = walk_state->op_info->object_type;
+
+ /*
+ * Get the Node/name from the earlier lookup
+ * (It was saved in the *op structure)
+ */
+ node = op->common.node;
+
+ /*
+ * Put the Node on the object stack (Contains the ACPI Name of
+ * this object)
+ */
+ walk_state->operands[0] = (void *)node;
+ walk_state->num_operands = 1;
+
+ /* Pop the scope stack */
+
+ if (acpi_ns_opens_scope(object_type) &&
+ (op->common.aml_opcode != AML_INT_METHODCALL_OP)) {
+ ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+ "(%s) Popping scope for Op %p\n",
+ acpi_ut_get_type_name(object_type), op));
+
+ status = acpi_ds_scope_stack_pop(walk_state);
+ if (ACPI_FAILURE(status)) {
+ goto cleanup;
+ }
+ }
+
+ /*
+ * Named operations are as follows:
+ *
+ * AML_ALIAS
+ * AML_BANKFIELD
+ * AML_CREATEBITFIELD
+ * AML_CREATEBYTEFIELD
+ * AML_CREATEDWORDFIELD
+ * AML_CREATEFIELD
+ * AML_CREATEQWORDFIELD
+ * AML_CREATEWORDFIELD
+ * AML_DATA_REGION
+ * AML_DEVICE
+ * AML_EVENT
+ * AML_FIELD
+ * AML_INDEXFIELD
+ * AML_METHOD
+ * AML_METHODCALL
+ * AML_MUTEX
+ * AML_NAME
+ * AML_NAMEDFIELD
+ * AML_OPREGION
+ * AML_POWERRES
+ * AML_PROCESSOR
+ * AML_SCOPE
+ * AML_THERMALZONE
+ */
+
+ ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+ "Create-Load [%s] State=%p Op=%p NamedObj=%p\n",
+ acpi_ps_get_opcode_name(op->common.aml_opcode),
+ walk_state, op, node));
+
+ /* Decode the opcode */
+
+ arg = op->common.value.arg;
+
+ switch (walk_state->op_info->type) {
+#ifndef ACPI_NO_METHOD_EXECUTION
+
+ case AML_TYPE_CREATE_FIELD:
+ /*
+ * Create the field object, but the field buffer and index must
+ * be evaluated later during the execution phase
+ */
+ status = acpi_ds_create_buffer_field(op, walk_state);
+ break;
+
+ case AML_TYPE_NAMED_FIELD:
+ /*
+ * If we are executing a method, initialize the field
+ */
+ if (walk_state->method_node) {
+ status = acpi_ds_init_field_objects(op, walk_state);
+ }
+
+ switch (op->common.aml_opcode) {
+ case AML_INDEX_FIELD_OP:
+
+ status =
+ acpi_ds_create_index_field(op,
+ (acpi_handle) arg->
+ common.node, walk_state);
+ break;
+
+ case AML_BANK_FIELD_OP:
+
+ status =
+ acpi_ds_create_bank_field(op, arg->common.node,
+ walk_state);
+ break;
+
+ case AML_FIELD_OP:
+
+ status =
+ acpi_ds_create_field(op, arg->common.node,
+ walk_state);
+ break;
+
+ default:
+
+ /* All NAMED_FIELD opcodes must be handled above */
+ break;
+ }
+ break;
+
+ case AML_TYPE_NAMED_SIMPLE:
+
+ status = acpi_ds_create_operands(walk_state, arg);
+ if (ACPI_FAILURE(status)) {
+ goto cleanup;
+ }
+
+ switch (op->common.aml_opcode) {
+ case AML_PROCESSOR_OP:
+
+ status = acpi_ex_create_processor(walk_state);
+ break;
+
+ case AML_POWER_RES_OP:
+
+ status = acpi_ex_create_power_resource(walk_state);
+ break;
+
+ case AML_MUTEX_OP:
+
+ status = acpi_ex_create_mutex(walk_state);
+ break;
+
+ case AML_EVENT_OP:
+
+ status = acpi_ex_create_event(walk_state);
+ break;
+
+ case AML_ALIAS_OP:
+
+ status = acpi_ex_create_alias(walk_state);
+ break;
+
+ default:
+
+ /* Unknown opcode */
+
+ status = AE_OK;
+ goto cleanup;
+ }
+
+ /* Delete operands */
+
+ for (i = 1; i < walk_state->num_operands; i++) {
+ acpi_ut_remove_reference(walk_state->operands[i]);
+ walk_state->operands[i] = NULL;
+ }
+
+ break;
+#endif /* ACPI_NO_METHOD_EXECUTION */
+
+ case AML_TYPE_NAMED_COMPLEX:
+
+ switch (op->common.aml_opcode) {
+#ifndef ACPI_NO_METHOD_EXECUTION
+ case AML_REGION_OP:
+ case AML_DATA_REGION_OP:
+
+ if (op->common.aml_opcode == AML_REGION_OP) {
+ region_space = (acpi_adr_space_type)
+ ((op->common.value.arg)->common.value.
+ integer);
+ } else {
+ region_space = ACPI_ADR_SPACE_DATA_TABLE;
+ }
+
+ /*
+ * The op_region is not fully parsed at this time. The only valid
+ * argument is the space_id. (We must save the address of the
+ * AML of the address and length operands)
+ *
+ * If we have a valid region, initialize it. The namespace is
+ * unlocked at this point.
+ *
+ * Need to unlock interpreter if it is locked (if we are running
+ * a control method), in order to allow _REG methods to be run
+ * during acpi_ev_initialize_region.
+ */
+ if (walk_state->method_node) {
+ /*
+ * Executing a method: initialize the region and unlock
+ * the interpreter
+ */
+ status =
+ acpi_ex_create_region(op->named.data,
+ op->named.length,
+ region_space,
+ walk_state);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ acpi_ex_exit_interpreter();
+ }
+
+ status =
+ acpi_ev_initialize_region
+ (acpi_ns_get_attached_object(node), FALSE);
+ if (walk_state->method_node) {
+ acpi_ex_enter_interpreter();
+ }
+
+ if (ACPI_FAILURE(status)) {
+ /*
+ * If AE_NOT_EXIST is returned, it is not fatal
+ * because many regions get created before a handler
+ * is installed for said region.
+ */
+ if (AE_NOT_EXIST == status) {
+ status = AE_OK;
+ }
+ }
+ break;
+
+ case AML_NAME_OP:
+
+ status = acpi_ds_create_node(walk_state, node, op);
+ break;
+
+ case AML_METHOD_OP:
+ /*
+ * method_op pkg_length name_string method_flags term_list
+ *
+ * Note: We must create the method node/object pair as soon as we
+ * see the method declaration. This allows later pass1 parsing
+ * of invocations of the method (need to know the number of
+ * arguments.)
+ */
+ ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+ "LOADING-Method: State=%p Op=%p NamedObj=%p\n",
+ walk_state, op, op->named.node));
+
+ if (!acpi_ns_get_attached_object(op->named.node)) {
+ walk_state->operands[0] =
+ ACPI_CAST_PTR(void, op->named.node);
+ walk_state->num_operands = 1;
+
+ status =
+ acpi_ds_create_operands(walk_state,
+ op->common.value.
+ arg);
+ if (ACPI_SUCCESS(status)) {
+ status =
+ acpi_ex_create_method(op->named.
+ data,
+ op->named.
+ length,
+ walk_state);
+ }
+ walk_state->operands[0] = NULL;
+ walk_state->num_operands = 0;
+
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+ }
+ break;
+
+#endif /* ACPI_NO_METHOD_EXECUTION */
+
+ default:
+
+ /* All NAMED_COMPLEX opcodes must be handled above */
+ break;
+ }
+ break;
+
+ case AML_CLASS_INTERNAL:
+
+ /* case AML_INT_NAMEPATH_OP: */
+ break;
+
+ case AML_CLASS_METHOD_CALL:
+
+ ACPI_DEBUG_PRINT((ACPI_DB_DISPATCH,
+ "RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n",
+ walk_state, op, node));
+
+ /*
+ * Lookup the method name and save the Node
+ */
+ status =
+ acpi_ns_lookup(walk_state->scope_info,
+ arg->common.value.string, ACPI_TYPE_ANY,
+ ACPI_IMODE_LOAD_PASS2,
+ ACPI_NS_SEARCH_PARENT |
+ ACPI_NS_DONT_OPEN_SCOPE, walk_state,
+ &(new_node));
+ if (ACPI_SUCCESS(status)) {
+ /*
+ * Make sure that what we found is indeed a method
+ * We didn't search for a method on purpose, to see if the name
+ * would resolve
+ */
+ if (new_node->type != ACPI_TYPE_METHOD) {
+ status = AE_AML_OPERAND_TYPE;
+ }
+
+ /* We could put the returned object (Node) on the object stack for
+ * later, but for now, we will put it in the "op" object that the
+ * parser uses, so we can get it again at the end of this scope
+ */
+ op->common.node = new_node;
+ } else {
+ ACPI_ERROR_NAMESPACE(arg->common.value.string, status);
+ }
+ break;
+
+ default:
+
+ break;
+ }
+
+cleanup:
+
+ /* Remove the Node pushed at the very beginning */
+
+ walk_state->operands[0] = NULL;
+ walk_state->num_operands = 0;
+ return_ACPI_STATUS(status);
+}
Code Review / kvmfornfv.git / blobdiff