1 files changed, 522 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/excreate.c b/drivers/acpi/acpica/excreate.c
new file mode 100644
index 000000000000..a57ad2564ab0
--- /dev/null
+++ b/drivers/acpi/acpica/excreate.c
@@ -0,0 +1,522 @@
+/******************************************************************************
+ *
+ * Module Name: excreate - Named object creation
+ *
+ *****************************************************************************/
+
+/*
+ * 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 "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
+ *              region_space        - 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 region_space, 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 ((region_space >= ACPI_NUM_PREDEFINED_REGIONS) &&
+            (region_space < ACPI_USER_REGION_BEGIN)) {
+                ACPI_ERROR((AE_INFO, "Invalid AddressSpace type %X",
+                            region_space));
+                return_ACPI_STATUS(AE_AML_INVALID_SPACE_ID);
+        }
+
+        ACPI_DEBUG_PRINT((ACPI_DB_LOAD, "Region Type - %s (%X)\n",
+                          acpi_ut_get_region_name(region_space), region_space));
+
+        /* 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;
+
+        /* Init the region from the operands */
+
+        obj_desc->region.space_id = region_space;
+        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
+         * for efficiency
+         */
+        method_flags = (u8) operand[1]->integer.value;
+
+        obj_desc->method.method_flags =
+            (u8) (method_flags & ~AML_METHOD_ARG_COUNT);
+        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) {
+                /*
+                 * 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_SYNCH_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);
+}