Initial import

1 files changed, 528 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/excreate.c b/drivers/acpi/acpica/excreate.c
new file mode 100644
index 000000000..aaeea4840
--- /dev/null
+++ b/drivers/acpi/acpica/excreate.c
@@ -0,0 +1,528 @@
+/******************************************************************************
+ *
+ * Module Name: excreate - Named object creation
+ *
+ *****************************************************************************/
+
+/*
+ * 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 "acinterp.h"
+#include "amlcode.h"
+#include "acnamesp.h"
+
+#define _COMPONENT          ACPI_EXECUTER
+ACPI_MODULE_NAME("excreate")
+#ifndef ACPI_NO_METHOD_EXECUTION
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_create_alias
+ *
+ * PARAMETERS:  walk_state           - Current state, contains operands
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create a new named alias
+ *
+ ******************************************************************************/
+acpi_status acpi_ex_create_alias(struct acpi_walk_state *walk_state)
+{
+	struct acpi_namespace_node *target_node;
+	struct acpi_namespace_node *alias_node;
+	acpi_status status = AE_OK;
+
+	ACPI_FUNCTION_TRACE(ex_create_alias);
+
+	/* Get the source/alias operands (both namespace nodes) */
+
+	alias_node = (struct acpi_namespace_node *)walk_state->operands[0];
+	target_node = (struct acpi_namespace_node *)walk_state->operands[1];
+
+	if ((target_node->type == ACPI_TYPE_LOCAL_ALIAS) ||
+	    (target_node->type == ACPI_TYPE_LOCAL_METHOD_ALIAS)) {
+		/*
+		 * Dereference an existing alias so that we don't create a chain
+		 * of aliases. With this code, we guarantee that an alias is
+		 * always exactly one level of indirection away from the
+		 * actual aliased name.
+		 */
+		target_node =
+		    ACPI_CAST_PTR(struct acpi_namespace_node,
+				  target_node->object);
+	}
+
+	/*
+	 * For objects that can never change (i.e., the NS node will
+	 * permanently point to the same object), we can simply attach
+	 * the object to the new NS node. For other objects (such as
+	 * Integers, buffers, etc.), we have to point the Alias node
+	 * to the original Node.
+	 */
+	switch (target_node->type) {
+
+		/* For these types, the sub-object can change dynamically via a Store */
+
+	case ACPI_TYPE_INTEGER:
+	case ACPI_TYPE_STRING:
+	case ACPI_TYPE_BUFFER:
+	case ACPI_TYPE_PACKAGE:
+	case ACPI_TYPE_BUFFER_FIELD:
+		/*
+		 * These types open a new scope, so we need the NS node in order to access
+		 * any children.
+		 */
+	case ACPI_TYPE_DEVICE:
+	case ACPI_TYPE_POWER:
+	case ACPI_TYPE_PROCESSOR:
+	case ACPI_TYPE_THERMAL:
+	case ACPI_TYPE_LOCAL_SCOPE:
+		/*
+		 * The new alias has the type ALIAS and points to the original
+		 * NS node, not the object itself.
+		 */
+		alias_node->type = ACPI_TYPE_LOCAL_ALIAS;
+		alias_node->object =
+		    ACPI_CAST_PTR(union acpi_operand_object, target_node);
+		break;
+
+	case ACPI_TYPE_METHOD:
+		/*
+		 * Control method aliases need to be differentiated
+		 */
+		alias_node->type = ACPI_TYPE_LOCAL_METHOD_ALIAS;
+		alias_node->object =
+		    ACPI_CAST_PTR(union acpi_operand_object, target_node);
+		break;
+
+	default:
+
+		/* Attach the original source object to the new Alias Node */
+
+		/*
+		 * The new alias assumes the type of the target, and it points
+		 * to the same object. The reference count of the object has an
+		 * additional reference to prevent deletion out from under either the
+		 * target node or the alias Node
+		 */
+		status = acpi_ns_attach_object(alias_node,
+					       acpi_ns_get_attached_object
+					       (target_node),
+					       target_node->type);
+		break;
+	}
+
+	/* Since both operands are Nodes, we don't need to delete them */
+
+	return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_create_event
+ *
+ * PARAMETERS:  walk_state          - Current state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create a new event object
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ex_create_event(struct acpi_walk_state *walk_state)
+{
+	acpi_status status;
+	union acpi_operand_object *obj_desc;
+
+	ACPI_FUNCTION_TRACE(ex_create_event);
+
+	obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_EVENT);
+	if (!obj_desc) {
+		status = AE_NO_MEMORY;
+		goto cleanup;
+	}
+
+	/*
+	 * Create the actual OS semaphore, with zero initial units -- meaning
+	 * that the event is created in an unsignalled state
+	 */
+	status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0,
+					  &obj_desc->event.os_semaphore);
+	if (ACPI_FAILURE(status)) {
+		goto cleanup;
+	}
+
+	/* Attach object to the Node */
+
+	status =
+	    acpi_ns_attach_object((struct acpi_namespace_node *)walk_state->
+				  operands[0], obj_desc, ACPI_TYPE_EVENT);
+
+cleanup:
+	/*
+	 * Remove local reference to the object (on error, will cause deletion
+	 * of both object and semaphore if present.)
+	 */
+	acpi_ut_remove_reference(obj_desc);
+	return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_create_mutex
+ *
+ * PARAMETERS:  walk_state          - Current state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create a new mutex object
+ *
+ *              Mutex (Name[0], sync_level[1])
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ex_create_mutex(struct acpi_walk_state *walk_state)
+{
+	acpi_status status = AE_OK;
+	union acpi_operand_object *obj_desc;
+
+	ACPI_FUNCTION_TRACE_PTR(ex_create_mutex, ACPI_WALK_OPERANDS);
+
+	/* Create the new mutex object */
+
+	obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_MUTEX);
+	if (!obj_desc) {
+		status = AE_NO_MEMORY;
+		goto cleanup;
+	}
+
+	/* Create the actual OS Mutex */
+
+	status = acpi_os_create_mutex(&obj_desc->mutex.os_mutex);
+	if (ACPI_FAILURE(status)) {
+		goto cleanup;
+	}
+
+	/* Init object and attach to NS node */
+
+	obj_desc->mutex.sync_level = (u8)walk_state->operands[1]->integer.value;
+	obj_desc->mutex.node =
+	    (struct acpi_namespace_node *)walk_state->operands[0];
+
+	status =
+	    acpi_ns_attach_object(obj_desc->mutex.node, obj_desc,
+				  ACPI_TYPE_MUTEX);
+
+cleanup:
+	/*
+	 * Remove local reference to the object (on error, will cause deletion
+	 * of both object and semaphore if present.)
+	 */
+	acpi_ut_remove_reference(obj_desc);
+	return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_create_region
+ *
+ * PARAMETERS:  aml_start           - Pointer to the region declaration AML
+ *              aml_length          - Max length of the declaration AML
+ *              space_id            - Address space ID for the region
+ *              walk_state          - Current state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create a new operation region object
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_create_region(u8 * aml_start,
+		      u32 aml_length,
+		      u8 space_id, struct acpi_walk_state *walk_state)
+{
+	acpi_status status;
+	union acpi_operand_object *obj_desc;
+	struct acpi_namespace_node *node;
+	union acpi_operand_object *region_obj2;
+
+	ACPI_FUNCTION_TRACE(ex_create_region);
+
+	/* Get the Namespace Node */
+
+	node = walk_state->op->common.node;
+
+	/*
+	 * If the region object is already attached to this node,
+	 * just return
+	 */
+	if (acpi_ns_get_attached_object(node)) {
+		return_ACPI_STATUS(AE_OK);
+	}
+
+	/*
+	 * Space ID must be one of the predefined IDs, or in the user-defined
+	 * range
+	 */
+	if (!acpi_is_valid_space_id(space_id)) {
+		/*
+		 * Print an error message, but continue. We don't want to abort
+		 * a table load for this exception. Instead, if the region is
+		 * actually used at runtime, abort the executing method.
+		 */
+		ACPI_ERROR((AE_INFO,
+			    "Invalid/unknown Address Space ID: 0x%2.2X",
+			    space_id));
+	}
+
+	ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "Region Type - %s (0x%X)\n",
+			  acpi_ut_get_region_name(space_id), space_id));
+
+	/* Create the region descriptor */
+
+	obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_REGION);
+	if (!obj_desc) {
+		status = AE_NO_MEMORY;
+		goto cleanup;
+	}
+
+	/*
+	 * Remember location in AML stream of address & length
+	 * operands since they need to be evaluated at run time.
+	 */
+	region_obj2 = obj_desc->common.next_object;
+	region_obj2->extra.aml_start = aml_start;
+	region_obj2->extra.aml_length = aml_length;
+	if (walk_state->scope_info) {
+		region_obj2->extra.scope_node =
+		    walk_state->scope_info->scope.node;
+	} else {
+		region_obj2->extra.scope_node = node;
+	}
+
+	/* Init the region from the operands */
+
+	obj_desc->region.space_id = space_id;
+	obj_desc->region.address = 0;
+	obj_desc->region.length = 0;
+	obj_desc->region.node = node;
+
+	/* Install the new region object in the parent Node */
+
+	status = acpi_ns_attach_object(node, obj_desc, ACPI_TYPE_REGION);
+
+cleanup:
+
+	/* Remove local reference to the object */
+
+	acpi_ut_remove_reference(obj_desc);
+	return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_create_processor
+ *
+ * PARAMETERS:  walk_state          - Current state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create a new processor object and populate the fields
+ *
+ *              Processor (Name[0], cpu_ID[1], pblock_addr[2], pblock_length[3])
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ex_create_processor(struct acpi_walk_state *walk_state)
+{
+	union acpi_operand_object **operand = &walk_state->operands[0];
+	union acpi_operand_object *obj_desc;
+	acpi_status status;
+
+	ACPI_FUNCTION_TRACE_PTR(ex_create_processor, walk_state);
+
+	/* Create the processor object */
+
+	obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_PROCESSOR);
+	if (!obj_desc) {
+		return_ACPI_STATUS(AE_NO_MEMORY);
+	}
+
+	/* Initialize the processor object from the operands */
+
+	obj_desc->processor.proc_id = (u8) operand[1]->integer.value;
+	obj_desc->processor.length = (u8) operand[3]->integer.value;
+	obj_desc->processor.address =
+	    (acpi_io_address) operand[2]->integer.value;
+
+	/* Install the processor object in the parent Node */
+
+	status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
+				       obj_desc, ACPI_TYPE_PROCESSOR);
+
+	/* Remove local reference to the object */
+
+	acpi_ut_remove_reference(obj_desc);
+	return_ACPI_STATUS(status);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_create_power_resource
+ *
+ * PARAMETERS:  walk_state          - Current state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create a new power_resource object and populate the fields
+ *
+ *              power_resource (Name[0], system_level[1], resource_order[2])
+ *
+ ******************************************************************************/
+
+acpi_status acpi_ex_create_power_resource(struct acpi_walk_state *walk_state)
+{
+	union acpi_operand_object **operand = &walk_state->operands[0];
+	acpi_status status;
+	union acpi_operand_object *obj_desc;
+
+	ACPI_FUNCTION_TRACE_PTR(ex_create_power_resource, walk_state);
+
+	/* Create the power resource object */
+
+	obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_POWER);
+	if (!obj_desc) {
+		return_ACPI_STATUS(AE_NO_MEMORY);
+	}
+
+	/* Initialize the power object from the operands */
+
+	obj_desc->power_resource.system_level = (u8) operand[1]->integer.value;
+	obj_desc->power_resource.resource_order =
+	    (u16) operand[2]->integer.value;
+
+	/* Install the  power resource object in the parent Node */
+
+	status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
+				       obj_desc, ACPI_TYPE_POWER);
+
+	/* Remove local reference to the object */
+
+	acpi_ut_remove_reference(obj_desc);
+	return_ACPI_STATUS(status);
+}
+#endif
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_create_method
+ *
+ * PARAMETERS:  aml_start       - First byte of the method's AML
+ *              aml_length      - AML byte count for this method
+ *              walk_state      - Current state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create a new method object
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_create_method(u8 * aml_start,
+		      u32 aml_length, struct acpi_walk_state *walk_state)
+{
+	union acpi_operand_object **operand = &walk_state->operands[0];
+	union acpi_operand_object *obj_desc;
+	acpi_status status;
+	u8 method_flags;
+
+	ACPI_FUNCTION_TRACE_PTR(ex_create_method, walk_state);
+
+	/* Create a new method object */
+
+	obj_desc = acpi_ut_create_internal_object(ACPI_TYPE_METHOD);
+	if (!obj_desc) {
+		status = AE_NO_MEMORY;
+		goto exit;
+	}
+
+	/* Save the method's AML pointer and length  */
+
+	obj_desc->method.aml_start = aml_start;
+	obj_desc->method.aml_length = aml_length;
+
+	/*
+	 * Disassemble the method flags. Split off the arg_count, Serialized
+	 * flag, and sync_level for efficiency.
+	 */
+	method_flags = (u8) operand[1]->integer.value;
+
+	obj_desc->method.param_count =
+	    (u8) (method_flags & AML_METHOD_ARG_COUNT);
+
+	/*
+	 * Get the sync_level. If method is serialized, a mutex will be
+	 * created for this method when it is parsed.
+	 */
+	if (method_flags & AML_METHOD_SERIALIZED) {
+		obj_desc->method.info_flags = ACPI_METHOD_SERIALIZED;
+
+		/*
+		 * ACPI 1.0: sync_level = 0
+		 * ACPI 2.0: sync_level = sync_level in method declaration
+		 */
+		obj_desc->method.sync_level = (u8)
+		    ((method_flags & AML_METHOD_SYNC_LEVEL) >> 4);
+	}
+
+	/* Attach the new object to the method Node */
+
+	status = acpi_ns_attach_object((struct acpi_namespace_node *)operand[0],
+				       obj_desc, ACPI_TYPE_METHOD);
+
+	/* Remove local reference to the object */
+
+	acpi_ut_remove_reference(obj_desc);
+
+exit:
+	/* Remove a reference to the operand */
+
+	acpi_ut_remove_reference(operand[1]);
+	return_ACPI_STATUS(status);
+}