1 files changed, 618 insertions, 0 deletions

diff --git a/drivers/acpi/dispatcher/dsobject.c b/drivers/acpi/dispatcher/dsobject.c
new file mode 100644
index 000000000000..eb8af4785bcb
--- /dev/null
+++ b/drivers/acpi/dispatcher/dsobject.c
@@ -0,0 +1,618 @@
+/******************************************************************************
+ *
+ * Module Name: dsobject - Dispatcher object management routines
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2005, R. Byron Moore
+ * 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 <acpi/acparser.h>
+#include <acpi/amlcode.h>
+#include <acpi/acdispat.h>
+#include <acpi/acnamesp.h>
+#include <acpi/acinterp.h>
+
+#define _COMPONENT          ACPI_DISPATCHER
+         ACPI_MODULE_NAME    ("dsobject")
+
+
+#ifndef ACPI_NO_METHOD_EXECUTION
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ds_build_internal_object
+ *
+ * PARAMETERS:  walk_state      - Current walk state
+ *              Op              - Parser object to be translated
+ *              obj_desc_ptr    - Where the ACPI internal object is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Translate a parser Op object to the equivalent namespace object
+ *              Simple objects are any objects other than a package object!
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_build_internal_object (
+        struct acpi_walk_state          *walk_state,
+        union acpi_parse_object         *op,
+        union acpi_operand_object       **obj_desc_ptr)
+{
+        union acpi_operand_object       *obj_desc;
+        acpi_status                     status;
+
+
+        ACPI_FUNCTION_TRACE ("ds_build_internal_object");
+
+
+        *obj_desc_ptr = NULL;
+        if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) {
+                /*
+                 * This is an named object reference.  If this name was
+                 * previously looked up in the namespace, it was stored in this op.
+                 * Otherwise, go ahead and look it up now
+                 */
+                if (!op->common.node) {
+                        status = acpi_ns_lookup (walk_state->scope_info, op->common.value.string,
+                                          ACPI_TYPE_ANY, ACPI_IMODE_EXECUTE,
+                                          ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE, NULL,
+                                          (struct acpi_namespace_node **) &(op->common.node));
+
+                        if (ACPI_FAILURE (status)) {
+                                ACPI_REPORT_NSERROR (op->common.value.string, status);
+                                return_ACPI_STATUS (status);
+                        }
+                }
+        }
+
+        /* Create and init the internal ACPI object */
+
+        obj_desc = acpi_ut_create_internal_object ((acpi_ps_get_opcode_info (op->common.aml_opcode))->object_type);
+        if (!obj_desc) {
+                return_ACPI_STATUS (AE_NO_MEMORY);
+        }
+
+        status = acpi_ds_init_object_from_op (walk_state, op, op->common.aml_opcode, &obj_desc);
+        if (ACPI_FAILURE (status)) {
+                acpi_ut_remove_reference (obj_desc);
+                return_ACPI_STATUS (status);
+        }
+
+        *obj_desc_ptr = obj_desc;
+        return_ACPI_STATUS (AE_OK);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ds_build_internal_buffer_obj
+ *
+ * PARAMETERS:  walk_state      - Current walk state
+ *              Op              - Parser object to be translated
+ *              buffer_length   - Length of the buffer
+ *              obj_desc_ptr    - Where the ACPI internal object is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Translate a parser Op package object to the equivalent
+ *              namespace object
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_build_internal_buffer_obj (
+        struct acpi_walk_state          *walk_state,
+        union acpi_parse_object         *op,
+        u32                             buffer_length,
+        union acpi_operand_object       **obj_desc_ptr)
+{
+        union acpi_parse_object         *arg;
+        union acpi_operand_object       *obj_desc;
+        union acpi_parse_object         *byte_list;
+        u32                             byte_list_length = 0;
+
+
+        ACPI_FUNCTION_TRACE ("ds_build_internal_buffer_obj");
+
+
+        obj_desc = *obj_desc_ptr;
+        if (obj_desc) {
+                /*
+                 * We are evaluating a Named buffer object "Name (xxxx, Buffer)".
+                 * The buffer object already exists (from the NS node)
+                 */
+        }
+        else {
+                /* Create a new buffer object */
+
+                obj_desc = acpi_ut_create_internal_object (ACPI_TYPE_BUFFER);
+                *obj_desc_ptr = obj_desc;
+                if (!obj_desc) {
+                        return_ACPI_STATUS (AE_NO_MEMORY);
+                }
+        }
+
+        /*
+         * Second arg is the buffer data (optional) byte_list can be either
+         * individual bytes or a string initializer.  In either case, a
+         * byte_list appears in the AML.
+         */
+        arg = op->common.value.arg;         /* skip first arg */
+
+        byte_list = arg->named.next;
+        if (byte_list) {
+                if (byte_list->common.aml_opcode != AML_INT_BYTELIST_OP) {
+                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                "Expecting bytelist, got AML opcode %X in op %p\n",
+                                byte_list->common.aml_opcode, byte_list));
+
+                        acpi_ut_remove_reference (obj_desc);
+                        return (AE_TYPE);
+                }
+
+                byte_list_length = (u32) byte_list->common.value.integer;
+        }
+
+        /*
+         * The buffer length (number of bytes) will be the larger of:
+         * 1) The specified buffer length and
+         * 2) The length of the initializer byte list
+         */
+        obj_desc->buffer.length = buffer_length;
+        if (byte_list_length > buffer_length) {
+                obj_desc->buffer.length = byte_list_length;
+        }
+
+        /* Allocate the buffer */
+
+        if (obj_desc->buffer.length == 0) {
+                obj_desc->buffer.pointer = NULL;
+                ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+                        "Buffer defined with zero length in AML, creating\n"));
+        }
+        else {
+                obj_desc->buffer.pointer = ACPI_MEM_CALLOCATE (
+                                   obj_desc->buffer.length);
+                if (!obj_desc->buffer.pointer) {
+                        acpi_ut_delete_object_desc (obj_desc);
+                        return_ACPI_STATUS (AE_NO_MEMORY);
+                }
+
+                /* Initialize buffer from the byte_list (if present) */
+
+                if (byte_list) {
+                        ACPI_MEMCPY (obj_desc->buffer.pointer, byte_list->named.data,
+                                          byte_list_length);
+                }
+        }
+
+        obj_desc->buffer.flags |= AOPOBJ_DATA_VALID;
+        op->common.node = (struct acpi_namespace_node *) obj_desc;
+        return_ACPI_STATUS (AE_OK);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ds_build_internal_package_obj
+ *
+ * PARAMETERS:  walk_state      - Current walk state
+ *              Op              - Parser object to be translated
+ *              package_length  - Number of elements in the package
+ *              obj_desc_ptr    - Where the ACPI internal object is returned
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Translate a parser Op package object to the equivalent
+ *              namespace object
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_build_internal_package_obj (
+        struct acpi_walk_state          *walk_state,
+        union acpi_parse_object         *op,
+        u32                             package_length,
+        union acpi_operand_object       **obj_desc_ptr)
+{
+        union acpi_parse_object         *arg;
+        union acpi_parse_object         *parent;
+        union acpi_operand_object       *obj_desc = NULL;
+        u32                             package_list_length;
+        acpi_status                     status = AE_OK;
+        u32                             i;
+
+
+        ACPI_FUNCTION_TRACE ("ds_build_internal_package_obj");
+
+
+        /* Find the parent of a possibly nested package */
+
+        parent = op->common.parent;
+        while ((parent->common.aml_opcode == AML_PACKAGE_OP)    ||
+                   (parent->common.aml_opcode == AML_VAR_PACKAGE_OP)) {
+                parent = parent->common.parent;
+        }
+
+        obj_desc = *obj_desc_ptr;
+        if (obj_desc) {
+                /*
+                 * We are evaluating a Named package object "Name (xxxx, Package)".
+                 * Get the existing package object from the NS node
+                 */
+        }
+        else {
+                obj_desc = acpi_ut_create_internal_object (ACPI_TYPE_PACKAGE);
+                *obj_desc_ptr = obj_desc;
+                if (!obj_desc) {
+                        return_ACPI_STATUS (AE_NO_MEMORY);
+                }
+
+                obj_desc->package.node = parent->common.node;
+        }
+
+        obj_desc->package.count = package_length;
+
+        /* Count the number of items in the package list */
+
+        package_list_length = 0;
+        arg = op->common.value.arg;
+        arg = arg->common.next;
+        while (arg) {
+                package_list_length++;
+                arg = arg->common.next;
+        }
+
+        /*
+         * The package length (number of elements) will be the greater
+         * of the specified length and the length of the initializer list
+         */
+        if (package_list_length > package_length) {
+                obj_desc->package.count = package_list_length;
+        }
+
+        /*
+         * Allocate the pointer array (array of pointers to the
+         * individual objects). Add an extra pointer slot so
+         * that the list is always null terminated.
+         */
+        obj_desc->package.elements = ACPI_MEM_CALLOCATE (
+                         ((acpi_size) obj_desc->package.count + 1) * sizeof (void *));
+
+        if (!obj_desc->package.elements) {
+                acpi_ut_delete_object_desc (obj_desc);
+                return_ACPI_STATUS (AE_NO_MEMORY);
+        }
+
+        /*
+         * Now init the elements of the package
+         */
+        i = 0;
+        arg = op->common.value.arg;
+        arg = arg->common.next;
+        while (arg) {
+                if (arg->common.aml_opcode == AML_INT_RETURN_VALUE_OP) {
+                        /* Object (package or buffer) is already built */
+
+                        obj_desc->package.elements[i] = ACPI_CAST_PTR (union acpi_operand_object, arg->common.node);
+                }
+                else {
+                        status = acpi_ds_build_internal_object (walk_state, arg,
+                                          &obj_desc->package.elements[i]);
+                }
+
+                i++;
+                arg = arg->common.next;
+        }
+
+        obj_desc->package.flags |= AOPOBJ_DATA_VALID;
+        op->common.node = (struct acpi_namespace_node *) obj_desc;
+        return_ACPI_STATUS (status);
+}
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ds_create_node
+ *
+ * PARAMETERS:  walk_state      - Current walk state
+ *              Node            - NS Node to be initialized
+ *              Op              - Parser object to be translated
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Create the object to be associated with a namespace node
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_create_node (
+        struct acpi_walk_state          *walk_state,
+        struct acpi_namespace_node      *node,
+        union acpi_parse_object         *op)
+{
+        acpi_status                     status;
+        union acpi_operand_object       *obj_desc;
+
+
+        ACPI_FUNCTION_TRACE_PTR ("ds_create_node", op);
+
+
+        /*
+         * Because of the execution pass through the non-control-method
+         * parts of the table, we can arrive here twice.  Only init
+         * the named object node the first time through
+         */
+        if (acpi_ns_get_attached_object (node)) {
+                return_ACPI_STATUS (AE_OK);
+        }
+
+        if (!op->common.value.arg) {
+                /* No arguments, there is nothing to do */
+
+                return_ACPI_STATUS (AE_OK);
+        }
+
+        /* Build an internal object for the argument(s) */
+
+        status = acpi_ds_build_internal_object (walk_state, op->common.value.arg, &obj_desc);
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        /* Re-type the object according to its argument */
+
+        node->type = ACPI_GET_OBJECT_TYPE (obj_desc);
+
+        /* Attach obj to node */
+
+        status = acpi_ns_attach_object (node, obj_desc, node->type);
+
+        /* Remove local reference to the object */
+
+        acpi_ut_remove_reference (obj_desc);
+        return_ACPI_STATUS (status);
+}
+
+#endif /* ACPI_NO_METHOD_EXECUTION */
+
+
+/*****************************************************************************
+ *
+ * FUNCTION:    acpi_ds_init_object_from_op
+ *
+ * PARAMETERS:  walk_state      - Current walk state
+ *              Op              - Parser op used to init the internal object
+ *              Opcode          - AML opcode associated with the object
+ *              ret_obj_desc    - Namespace object to be initialized
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Initialize a namespace object from a parser Op and its
+ *              associated arguments.  The namespace object is a more compact
+ *              representation of the Op and its arguments.
+ *
+ ****************************************************************************/
+
+acpi_status
+acpi_ds_init_object_from_op (
+        struct acpi_walk_state          *walk_state,
+        union acpi_parse_object         *op,
+        u16                             opcode,
+        union acpi_operand_object       **ret_obj_desc)
+{
+        const struct acpi_opcode_info   *op_info;
+        union acpi_operand_object       *obj_desc;
+        acpi_status                     status = AE_OK;
+
+
+        ACPI_FUNCTION_TRACE ("ds_init_object_from_op");
+
+
+        obj_desc = *ret_obj_desc;
+        op_info = acpi_ps_get_opcode_info (opcode);
+        if (op_info->class == AML_CLASS_UNKNOWN) {
+                /* Unknown opcode */
+
+                return_ACPI_STATUS (AE_TYPE);
+        }
+
+        /* Perform per-object initialization */
+
+        switch (ACPI_GET_OBJECT_TYPE (obj_desc)) {
+        case ACPI_TYPE_BUFFER:
+
+                /*
+                 * Defer evaluation of Buffer term_arg operand
+                 */
+                obj_desc->buffer.node     = (struct acpi_namespace_node *) walk_state->operands[0];
+                obj_desc->buffer.aml_start = op->named.data;
+                obj_desc->buffer.aml_length = op->named.length;
+                break;
+
+
+        case ACPI_TYPE_PACKAGE:
+
+                /*
+                 * Defer evaluation of Package term_arg operand
+                 */
+                obj_desc->package.node     = (struct acpi_namespace_node *) walk_state->operands[0];
+                obj_desc->package.aml_start = op->named.data;
+                obj_desc->package.aml_length = op->named.length;
+                break;
+
+
+        case ACPI_TYPE_INTEGER:
+
+                switch (op_info->type) {
+                case AML_TYPE_CONSTANT:
+                        /*
+                         * Resolve AML Constants here - AND ONLY HERE!
+                         * All constants are integers.
+                         * We mark the integer with a flag that indicates that it started life
+                         * as a constant -- so that stores to constants will perform as expected (noop).
+                         * (zero_op is used as a placeholder for optional target operands.)
+                         */
+                        obj_desc->common.flags = AOPOBJ_AML_CONSTANT;
+
+                        switch (opcode) {
+                        case AML_ZERO_OP:
+
+                                obj_desc->integer.value = 0;
+                                break;
+
+                        case AML_ONE_OP:
+
+                                obj_desc->integer.value = 1;
+                                break;
+
+                        case AML_ONES_OP:
+
+                                obj_desc->integer.value = ACPI_INTEGER_MAX;
+
+                                /* Truncate value if we are executing from a 32-bit ACPI table */
+
+#ifndef ACPI_NO_METHOD_EXECUTION
+                                acpi_ex_truncate_for32bit_table (obj_desc);
+#endif
+                                break;
+
+                        case AML_REVISION_OP:
+
+                                obj_desc->integer.value = ACPI_CA_VERSION;
+                                break;
+
+                        default:
+
+                                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown constant opcode %X\n", opcode));
+                                status = AE_AML_OPERAND_TYPE;
+                                break;
+                        }
+                        break;
+
+
+                case AML_TYPE_LITERAL:
+
+                        obj_desc->integer.value = op->common.value.integer;
+                        break;
+
+
+                default:
+                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unknown Integer type %X\n", op_info->type));
+                        status = AE_AML_OPERAND_TYPE;
+                        break;
+                }
+                break;
+
+
+        case ACPI_TYPE_STRING:
+
+                obj_desc->string.pointer = op->common.value.string;
+                obj_desc->string.length = (u32) ACPI_STRLEN (op->common.value.string);
+
+                /*
+                 * The string is contained in the ACPI table, don't ever try
+                 * to delete it
+                 */
+                obj_desc->common.flags |= AOPOBJ_STATIC_POINTER;
+                break;
+
+
+        case ACPI_TYPE_METHOD:
+                break;
+
+
+        case ACPI_TYPE_LOCAL_REFERENCE:
+
+                switch (op_info->type) {
+                case AML_TYPE_LOCAL_VARIABLE:
+
+                        /* Split the opcode into a base opcode + offset */
+
+                        obj_desc->reference.opcode = AML_LOCAL_OP;
+                        obj_desc->reference.offset = opcode - AML_LOCAL_OP;
+
+#ifndef ACPI_NO_METHOD_EXECUTION
+                        status = acpi_ds_method_data_get_node (AML_LOCAL_OP, obj_desc->reference.offset,
+                                         walk_state, (struct acpi_namespace_node **) &obj_desc->reference.object);
+#endif
+                        break;
+
+
+                case AML_TYPE_METHOD_ARGUMENT:
+
+                        /* Split the opcode into a base opcode + offset */
+
+                        obj_desc->reference.opcode = AML_ARG_OP;
+                        obj_desc->reference.offset = opcode - AML_ARG_OP;
+
+#ifndef ACPI_NO_METHOD_EXECUTION
+                        status = acpi_ds_method_data_get_node (AML_ARG_OP, obj_desc->reference.offset,
+                                         walk_state, (struct acpi_namespace_node **) &obj_desc->reference.object);
+#endif
+                        break;
+
+                default: /* Other literals, etc.. */
+
+                        if (op->common.aml_opcode == AML_INT_NAMEPATH_OP) {
+                                /* Node was saved in Op */
+
+                                obj_desc->reference.node = op->common.node;
+                        }
+
+                        obj_desc->reference.opcode = opcode;
+                        break;
+                }
+                break;
+
+
+        default:
+
+                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Unimplemented data type: %X\n",
+                        ACPI_GET_OBJECT_TYPE (obj_desc)));
+
+                status = AE_AML_OPERAND_TYPE;
+                break;
+        }
+
+        return_ACPI_STATUS (status);
+}
+
+