Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 536 insertions, 0 deletions

diff --git a/drivers/acpi/executer/exstore.c b/drivers/acpi/executer/exstore.c
new file mode 100644
index 000000000000..e0fc6aba1253
--- /dev/null
+++ b/drivers/acpi/executer/exstore.c
@@ -0,0 +1,536 @@
+
+/******************************************************************************
+ *
+ * Module Name: exstore - AML Interpreter object store support
+ *
+ *****************************************************************************/
+
+/*
+ * 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/acdispat.h>
+#include <acpi/acinterp.h>
+#include <acpi/amlcode.h>
+#include <acpi/acnamesp.h>
+
+
+#define _COMPONENT          ACPI_EXECUTER
+         ACPI_MODULE_NAME    ("exstore")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_store
+ *
+ * PARAMETERS:  *source_desc        - Value to be stored
+ *              *dest_desc          - Where to store it.  Must be an NS node
+ *                                    or an union acpi_operand_object of type
+ *                                    Reference;
+ *              walk_state          - Current walk state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Store the value described by source_desc into the location
+ *              described by dest_desc. Called by various interpreter
+ *              functions to store the result of an operation into
+ *              the destination operand -- not just simply the actual "Store"
+ *              ASL operator.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_store (
+        union acpi_operand_object       *source_desc,
+        union acpi_operand_object       *dest_desc,
+        struct acpi_walk_state          *walk_state)
+{
+        acpi_status                     status = AE_OK;
+        union acpi_operand_object       *ref_desc = dest_desc;
+
+
+        ACPI_FUNCTION_TRACE_PTR ("ex_store", dest_desc);
+
+
+        /* Validate parameters */
+
+        if (!source_desc || !dest_desc) {
+                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Null parameter\n"));
+                return_ACPI_STATUS (AE_AML_NO_OPERAND);
+        }
+
+        /* dest_desc can be either a namespace node or an ACPI object */
+
+        if (ACPI_GET_DESCRIPTOR_TYPE (dest_desc) == ACPI_DESC_TYPE_NAMED) {
+                /*
+                 * Dest is a namespace node,
+                 * Storing an object into a Named node.
+                 */
+                status = acpi_ex_store_object_to_node (source_desc,
+                                 (struct acpi_namespace_node *) dest_desc, walk_state,
+                                 ACPI_IMPLICIT_CONVERSION);
+
+                return_ACPI_STATUS (status);
+        }
+
+        /* Destination object must be a Reference or a Constant object */
+
+        switch (ACPI_GET_OBJECT_TYPE (dest_desc)) {
+        case ACPI_TYPE_LOCAL_REFERENCE:
+                break;
+
+        case ACPI_TYPE_INTEGER:
+
+                /* Allow stores to Constants -- a Noop as per ACPI spec */
+
+                if (dest_desc->common.flags & AOPOBJ_AML_CONSTANT) {
+                        return_ACPI_STATUS (AE_OK);
+                }
+
+                /*lint -fallthrough */
+
+        default:
+
+                /* Destination is not a Reference object */
+
+                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                        "Target is not a Reference or Constant object - %s [%p]\n",
+                        acpi_ut_get_object_type_name (dest_desc), dest_desc));
+
+                ACPI_DUMP_STACK_ENTRY (source_desc);
+                ACPI_DUMP_STACK_ENTRY (dest_desc);
+                ACPI_DUMP_OPERANDS (&dest_desc, ACPI_IMODE_EXECUTE, "ex_store",
+                                  2, "Target is not a Reference or Constant object");
+
+                return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+        }
+
+        /*
+         * Examine the Reference opcode.  These cases are handled:
+         *
+         * 1) Store to Name (Change the object associated with a name)
+         * 2) Store to an indexed area of a Buffer or Package
+         * 3) Store to a Method Local or Arg
+         * 4) Store to the debug object
+         */
+        switch (ref_desc->reference.opcode) {
+        case AML_NAME_OP:
+        case AML_REF_OF_OP:
+
+                /* Storing an object into a Name "container" */
+
+                status = acpi_ex_store_object_to_node (source_desc, ref_desc->reference.object,
+                                  walk_state, ACPI_IMPLICIT_CONVERSION);
+                break;
+
+
+        case AML_INDEX_OP:
+
+                /* Storing to an Index (pointer into a packager or buffer) */
+
+                status = acpi_ex_store_object_to_index (source_desc, ref_desc, walk_state);
+                break;
+
+
+        case AML_LOCAL_OP:
+        case AML_ARG_OP:
+
+                /* Store to a method local/arg  */
+
+                status = acpi_ds_store_object_to_local (ref_desc->reference.opcode,
+                                  ref_desc->reference.offset, source_desc, walk_state);
+                break;
+
+
+        case AML_DEBUG_OP:
+
+                /*
+                 * Storing to the Debug object causes the value stored to be
+                 * displayed and otherwise has no effect -- see ACPI Specification
+                 */
+                ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+                        "**** Write to Debug Object: Object %p %s ****:\n\n",
+                        source_desc, acpi_ut_get_object_type_name (source_desc)));
+
+                ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[ACPI Debug] %s: ",
+                        acpi_ut_get_object_type_name (source_desc)));
+
+                if (!acpi_ut_valid_internal_object (source_desc)) {
+                   ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT,
+                           "%p, Invalid Internal Object!\n", source_desc));
+                   break;
+                }
+
+                switch (ACPI_GET_OBJECT_TYPE (source_desc)) {
+                case ACPI_TYPE_INTEGER:
+
+                        if (acpi_gbl_integer_byte_width == 4) {
+                                ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "0x%8.8X\n",
+                                        (u32) source_desc->integer.value));
+                        }
+                        else {
+                                ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "0x%8.8X%8.8X\n",
+                                        ACPI_FORMAT_UINT64 (source_desc->integer.value)));
+                        }
+                        break;
+
+
+                case ACPI_TYPE_BUFFER:
+
+                        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[0x%.2X]",
+                                (u32) source_desc->buffer.length));
+                        ACPI_DUMP_BUFFER (source_desc->buffer.pointer,
+                                (source_desc->buffer.length < 32) ? source_desc->buffer.length : 32);
+                        break;
+
+
+                case ACPI_TYPE_STRING:
+
+                        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[0x%.2X] \"%s\"\n",
+                                source_desc->string.length, source_desc->string.pointer));
+                        break;
+
+
+                case ACPI_TYPE_PACKAGE:
+
+                        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "[0x%.2X] Elements Ptr - %p\n",
+                                source_desc->package.count, source_desc->package.elements));
+                        break;
+
+
+                default:
+
+                        ACPI_DEBUG_PRINT_RAW ((ACPI_DB_DEBUG_OBJECT, "%p\n",
+                                source_desc));
+                        break;
+                }
+
+                ACPI_DEBUG_PRINT_RAW ((ACPI_DB_EXEC, "\n"));
+                break;
+
+
+        default:
+
+                ACPI_REPORT_ERROR (("ex_store: Unknown Reference opcode %X\n",
+                        ref_desc->reference.opcode));
+                ACPI_DUMP_ENTRY (ref_desc, ACPI_LV_ERROR);
+
+                status = AE_AML_INTERNAL;
+                break;
+        }
+
+        return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_store_object_to_index
+ *
+ * PARAMETERS:  *source_desc            - Value to be stored
+ *              *dest_desc              - Named object to receive the value
+ *              walk_state              - Current walk state
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Store the object to indexed Buffer or Package element
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_store_object_to_index (
+        union acpi_operand_object       *source_desc,
+        union acpi_operand_object       *index_desc,
+        struct acpi_walk_state          *walk_state)
+{
+        acpi_status                     status = AE_OK;
+        union acpi_operand_object       *obj_desc;
+        union acpi_operand_object       *new_desc;
+        u8                              value = 0;
+        u32                             i;
+
+
+        ACPI_FUNCTION_TRACE ("ex_store_object_to_index");
+
+
+        /*
+         * Destination must be a reference pointer, and
+         * must point to either a buffer or a package
+         */
+        switch (index_desc->reference.target_type) {
+        case ACPI_TYPE_PACKAGE:
+                /*
+                 * Storing to a package element. Copy the object and replace
+                 * any existing object with the new object. No implicit
+                 * conversion is performed.
+                 *
+                 * The object at *(index_desc->Reference.Where) is the
+                 * element within the package that is to be modified.
+                 * The parent package object is at index_desc->Reference.Object
+                 */
+                obj_desc = *(index_desc->reference.where);
+
+                status = acpi_ut_copy_iobject_to_iobject (source_desc, &new_desc, walk_state);
+                if (ACPI_FAILURE (status)) {
+                        return_ACPI_STATUS (status);
+                }
+
+                if (obj_desc) {
+                        /* Decrement reference count by the ref count of the parent package */
+
+                        for (i = 0; i < ((union acpi_operand_object *) index_desc->reference.object)->common.reference_count; i++) {
+                                acpi_ut_remove_reference (obj_desc);
+                        }
+                }
+
+                *(index_desc->reference.where) = new_desc;
+
+                /* Increment reference count by the ref count of the parent package -1 */
+
+                for (i = 1; i < ((union acpi_operand_object *) index_desc->reference.object)->common.reference_count; i++) {
+                        acpi_ut_add_reference (new_desc);
+                }
+
+                break;
+
+
+        case ACPI_TYPE_BUFFER_FIELD:
+
+                /*
+                 * Store into a Buffer or String (not actually a real buffer_field)
+                 * at a location defined by an Index.
+                 *
+                 * The first 8-bit element of the source object is written to the
+                 * 8-bit Buffer location defined by the Index destination object,
+                 * according to the ACPI 2.0 specification.
+                 */
+
+                /*
+                 * Make sure the target is a Buffer or String. An error should
+                 * not happen here, since the reference_object was constructed
+                 * by the INDEX_OP code.
+                 */
+                obj_desc = index_desc->reference.object;
+                if ((ACPI_GET_OBJECT_TYPE (obj_desc) != ACPI_TYPE_BUFFER) &&
+                        (ACPI_GET_OBJECT_TYPE (obj_desc) != ACPI_TYPE_STRING)) {
+                        return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+                }
+
+                /*
+                 * The assignment of the individual elements will be slightly
+                 * different for each source type.
+                 */
+                switch (ACPI_GET_OBJECT_TYPE (source_desc)) {
+                case ACPI_TYPE_INTEGER:
+
+                        /* Use the least-significant byte of the integer */
+
+                        value = (u8) (source_desc->integer.value);
+                        break;
+
+                case ACPI_TYPE_BUFFER:
+                case ACPI_TYPE_STRING:
+
+                        /* Note: Takes advantage of common string/buffer fields */
+
+                        value = source_desc->buffer.pointer[0];
+                        break;
+
+                default:
+
+                        /* All other types are invalid */
+
+                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                "Source must be Integer/Buffer/String type, not %s\n",
+                                acpi_ut_get_object_type_name (source_desc)));
+                        return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+                }
+
+                /* Store the source value into the target buffer byte */
+
+                obj_desc->buffer.pointer[index_desc->reference.offset] = value;
+                break;
+
+
+        default:
+                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                        "Target is not a Package or buffer_field\n"));
+                status = AE_AML_OPERAND_TYPE;
+                break;
+        }
+
+        return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_ex_store_object_to_node
+ *
+ * PARAMETERS:  source_desc             - Value to be stored
+ *              Node                    - Named object to receive the value
+ *              walk_state              - Current walk state
+ *              implicit_conversion     - Perform implicit conversion (yes/no)
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Store the object to the named object.
+ *
+ *              The Assignment of an object to a named object is handled here
+ *              The value passed in will replace the current value (if any)
+ *              with the input value.
+ *
+ *              When storing into an object the data is converted to the
+ *              target object type then stored in the object.  This means
+ *              that the target object type (for an initialized target) will
+ *              not be changed by a store operation.
+ *
+ *              Assumes parameters are already validated.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_store_object_to_node (
+        union acpi_operand_object       *source_desc,
+        struct acpi_namespace_node      *node,
+        struct acpi_walk_state          *walk_state,
+        u8                              implicit_conversion)
+{
+        acpi_status                     status = AE_OK;
+        union acpi_operand_object       *target_desc;
+        union acpi_operand_object       *new_desc;
+        acpi_object_type                target_type;
+
+
+        ACPI_FUNCTION_TRACE_PTR ("ex_store_object_to_node", source_desc);
+
+
+        /*
+         * Get current type of the node, and object attached to Node
+         */
+        target_type = acpi_ns_get_type (node);
+        target_desc = acpi_ns_get_attached_object (node);
+
+        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Storing %p(%s) into node %p(%s)\n",
+                source_desc, acpi_ut_get_object_type_name (source_desc),
+                          node, acpi_ut_get_type_name (target_type)));
+
+        /*
+         * Resolve the source object to an actual value
+         * (If it is a reference object)
+         */
+        status = acpi_ex_resolve_object (&source_desc, target_type, walk_state);
+        if (ACPI_FAILURE (status)) {
+                return_ACPI_STATUS (status);
+        }
+
+        /* If no implicit conversion, drop into the default case below */
+
+        if (!implicit_conversion) {
+                /* Force execution of default (no implicit conversion) */
+
+                target_type = ACPI_TYPE_ANY;
+        }
+
+        /*
+         * Do the actual store operation
+         */
+        switch (target_type) {
+        case ACPI_TYPE_BUFFER_FIELD:
+        case ACPI_TYPE_LOCAL_REGION_FIELD:
+        case ACPI_TYPE_LOCAL_BANK_FIELD:
+        case ACPI_TYPE_LOCAL_INDEX_FIELD:
+
+                /*
+                 * For fields, copy the source data to the target field.
+                 */
+                status = acpi_ex_write_data_to_field (source_desc, target_desc, &walk_state->result_obj);
+                break;
+
+
+        case ACPI_TYPE_INTEGER:
+        case ACPI_TYPE_STRING:
+        case ACPI_TYPE_BUFFER:
+
+                /*
+                 * These target types are all of type Integer/String/Buffer, and
+                 * therefore support implicit conversion before the store.
+                 *
+                 * Copy and/or convert the source object to a new target object
+                 */
+                status = acpi_ex_store_object_to_object (source_desc, target_desc, &new_desc, walk_state);
+                if (ACPI_FAILURE (status)) {
+                        return_ACPI_STATUS (status);
+                }
+
+                if (new_desc != target_desc) {
+                        /*
+                         * Store the new new_desc as the new value of the Name, and set
+                         * the Name's type to that of the value being stored in it.
+                         * source_desc reference count is incremented by attach_object.
+                         *
+                         * Note: This may change the type of the node if an explicit store
+                         * has been performed such that the node/object type has been
+                         * changed.
+                         */
+                        status = acpi_ns_attach_object (node, new_desc, new_desc->common.type);
+
+                        ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+                                "Store %s into %s via Convert/Attach\n",
+                                acpi_ut_get_object_type_name (source_desc),
+                                acpi_ut_get_object_type_name (new_desc)));
+                }
+                break;
+
+
+        default:
+
+                ACPI_DEBUG_PRINT ((ACPI_DB_EXEC,
+                        "Storing %s (%p) directly into node (%p), no implicit conversion\n",
+                        acpi_ut_get_object_type_name (source_desc), source_desc, node));
+
+                /* No conversions for all other types.  Just attach the source object */
+
+                status = acpi_ns_attach_object (node, source_desc, ACPI_GET_OBJECT_TYPE (source_desc));
+                break;
+        }
+
+        return_ACPI_STATUS (status);
+}
+
+