1 files changed, 391 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/dsargs.c b/drivers/acpi/acpica/dsargs.c
new file mode 100644
index 000000000000..8c7b99728aa2
--- /dev/null
+++ b/drivers/acpi/acpica/dsargs.c
@@ -0,0 +1,391 @@
+/******************************************************************************
+ *
+ * Module Name: dsargs - Support for execution of dynamic arguments for static
+ *                       objects (regions, fields, buffer fields, etc.)
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2011, 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);
+        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, node->parent,
+                                           extra_desc->extra.aml_length,
+                                           extra_desc->extra.aml_start);
+        return_ACPI_STATUS(status);
+}