Linux-2.6.12-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!
diff --git a/drivers/acpi/executer/exresolv.c b/drivers/acpi/executer/exresolv.c
new file mode 100644
index 0000000..7be6049
--- /dev/null
+++ b/drivers/acpi/executer/exresolv.c
@@ -0,0 +1,546 @@
+
+/******************************************************************************
+ *
+ * Module Name: exresolv - AML Interpreter object resolution
+ *
+ *****************************************************************************/
+
+/*
+ * 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/amlcode.h>
+#include <acpi/acdispat.h>
+#include <acpi/acinterp.h>
+#include <acpi/acnamesp.h>
+#include <acpi/acparser.h>
+
+
+#define _COMPONENT ACPI_EXECUTER
+ ACPI_MODULE_NAME ("exresolv")
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_resolve_to_value
+ *
+ * PARAMETERS: **stack_ptr - Points to entry on obj_stack, which can
+ * be either an (union acpi_operand_object *)
+ * or an acpi_handle.
+ * walk_state - Current method state
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Convert Reference objects to values
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_resolve_to_value (
+ union acpi_operand_object **stack_ptr,
+ struct acpi_walk_state *walk_state)
+{
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE_PTR ("ex_resolve_to_value", stack_ptr);
+
+
+ if (!stack_ptr || !*stack_ptr) {
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Internal - null pointer\n"));
+ return_ACPI_STATUS (AE_AML_NO_OPERAND);
+ }
+
+ /*
+ * The entity pointed to by the stack_ptr can be either
+ * 1) A valid union acpi_operand_object, or
+ * 2) A struct acpi_namespace_node (named_obj)
+ */
+ if (ACPI_GET_DESCRIPTOR_TYPE (*stack_ptr) == ACPI_DESC_TYPE_OPERAND) {
+ status = acpi_ex_resolve_object_to_value (stack_ptr, walk_state);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+ }
+
+ /*
+ * Object on the stack may have changed if acpi_ex_resolve_object_to_value()
+ * was called (i.e., we can't use an _else_ here.)
+ */
+ if (ACPI_GET_DESCRIPTOR_TYPE (*stack_ptr) == ACPI_DESC_TYPE_NAMED) {
+ status = acpi_ex_resolve_node_to_value (
+ ACPI_CAST_INDIRECT_PTR (struct acpi_namespace_node, stack_ptr),
+ walk_state);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+ }
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "Resolved object %p\n", *stack_ptr));
+ return_ACPI_STATUS (AE_OK);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_resolve_object_to_value
+ *
+ * PARAMETERS: stack_ptr - Pointer to a stack location that contains a
+ * ptr to an internal object.
+ * walk_state - Current method state
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Retrieve the value from an internal object. The Reference type
+ * uses the associated AML opcode to determine the value.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_resolve_object_to_value (
+ union acpi_operand_object **stack_ptr,
+ struct acpi_walk_state *walk_state)
+{
+ acpi_status status = AE_OK;
+ union acpi_operand_object *stack_desc;
+ void *temp_node;
+ union acpi_operand_object *obj_desc;
+ u16 opcode;
+
+
+ ACPI_FUNCTION_TRACE ("ex_resolve_object_to_value");
+
+
+ stack_desc = *stack_ptr;
+
+ /* This is an union acpi_operand_object */
+
+ switch (ACPI_GET_OBJECT_TYPE (stack_desc)) {
+ case ACPI_TYPE_LOCAL_REFERENCE:
+
+ opcode = stack_desc->reference.opcode;
+
+ switch (opcode) {
+ case AML_NAME_OP:
+
+ /*
+ * Convert indirect name ptr to a direct name ptr.
+ * Then, acpi_ex_resolve_node_to_value can be used to get the value
+ */
+ temp_node = stack_desc->reference.object;
+
+ /* Delete the Reference Object */
+
+ acpi_ut_remove_reference (stack_desc);
+
+ /* Put direct name pointer onto stack and exit */
+
+ (*stack_ptr) = temp_node;
+ break;
+
+
+ case AML_LOCAL_OP:
+ case AML_ARG_OP:
+
+ /*
+ * Get the local from the method's state info
+ * Note: this increments the local's object reference count
+ */
+ status = acpi_ds_method_data_get_value (opcode,
+ stack_desc->reference.offset, walk_state, &obj_desc);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "[Arg/Local %X] value_obj is %p\n",
+ stack_desc->reference.offset, obj_desc));
+
+ /*
+ * Now we can delete the original Reference Object and
+ * replace it with the resolved value
+ */
+ acpi_ut_remove_reference (stack_desc);
+ *stack_ptr = obj_desc;
+ break;
+
+
+ case AML_INDEX_OP:
+
+ switch (stack_desc->reference.target_type) {
+ case ACPI_TYPE_BUFFER_FIELD:
+
+ /* Just return - leave the Reference on the stack */
+ break;
+
+
+ case ACPI_TYPE_PACKAGE:
+
+ obj_desc = *stack_desc->reference.where;
+ if (obj_desc) {
+ /*
+ * Valid obj descriptor, copy pointer to return value
+ * (i.e., dereference the package index)
+ * Delete the ref object, increment the returned object
+ */
+ acpi_ut_remove_reference (stack_desc);
+ acpi_ut_add_reference (obj_desc);
+ *stack_ptr = obj_desc;
+ }
+ else {
+ /*
+ * A NULL object descriptor means an unitialized element of
+ * the package, can't dereference it
+ */
+ ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+ "Attempt to deref an Index to NULL pkg element Idx=%p\n",
+ stack_desc));
+ status = AE_AML_UNINITIALIZED_ELEMENT;
+ }
+ break;
+
+
+ default:
+
+ /* Invalid reference object */
+
+ ACPI_REPORT_ERROR ((
+ "During resolve, Unknown target_type %X in Index/Reference obj %p\n",
+ stack_desc->reference.target_type, stack_desc));
+ status = AE_AML_INTERNAL;
+ break;
+ }
+ break;
+
+
+ case AML_REF_OF_OP:
+ case AML_DEBUG_OP:
+ case AML_LOAD_OP:
+
+ /* Just leave the object as-is */
+
+ break;
+
+
+ default:
+
+ ACPI_REPORT_ERROR (("During resolve, Unknown Reference opcode %X (%s) in %p\n",
+ opcode, acpi_ps_get_opcode_name (opcode), stack_desc));
+ status = AE_AML_INTERNAL;
+ break;
+ }
+ break;
+
+
+ case ACPI_TYPE_BUFFER:
+
+ status = acpi_ds_get_buffer_arguments (stack_desc);
+ break;
+
+
+ case ACPI_TYPE_PACKAGE:
+
+ status = acpi_ds_get_package_arguments (stack_desc);
+ break;
+
+
+ /*
+ * These cases may never happen here, but just in case..
+ */
+ case ACPI_TYPE_BUFFER_FIELD:
+ case ACPI_TYPE_LOCAL_REGION_FIELD:
+ case ACPI_TYPE_LOCAL_BANK_FIELD:
+ case ACPI_TYPE_LOCAL_INDEX_FIELD:
+
+ ACPI_DEBUG_PRINT ((ACPI_DB_EXEC, "field_read source_desc=%p Type=%X\n",
+ stack_desc, ACPI_GET_OBJECT_TYPE (stack_desc)));
+
+ status = acpi_ex_read_data_from_field (walk_state, stack_desc, &obj_desc);
+ *stack_ptr = (void *) obj_desc;
+ break;
+
+ default:
+ break;
+ }
+
+ return_ACPI_STATUS (status);
+}
+
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ex_resolve_multiple
+ *
+ * PARAMETERS: walk_state - Current state (contains AML opcode)
+ * Operand - Starting point for resolution
+ * return_type - Where the object type is returned
+ * return_desc - Where the resolved object is returned
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Return the base object and type. Traverse a reference list if
+ * necessary to get to the base object.
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ex_resolve_multiple (
+ struct acpi_walk_state *walk_state,
+ union acpi_operand_object *operand,
+ acpi_object_type *return_type,
+ union acpi_operand_object **return_desc)
+{
+ union acpi_operand_object *obj_desc = (void *) operand;
+ struct acpi_namespace_node *node;
+ acpi_object_type type;
+ acpi_status status;
+
+
+ ACPI_FUNCTION_TRACE ("acpi_ex_resolve_multiple");
+
+
+ /*
+ * Operand can be either a namespace node or an operand descriptor
+ */
+ switch (ACPI_GET_DESCRIPTOR_TYPE (obj_desc)) {
+ case ACPI_DESC_TYPE_OPERAND:
+ type = obj_desc->common.type;
+ break;
+
+ case ACPI_DESC_TYPE_NAMED:
+ type = ((struct acpi_namespace_node *) obj_desc)->type;
+ obj_desc = acpi_ns_get_attached_object ((struct acpi_namespace_node *) obj_desc);
+
+ /* If we had an Alias node, use the attached object for type info */
+
+ if (type == ACPI_TYPE_LOCAL_ALIAS) {
+ type = ((struct acpi_namespace_node *) obj_desc)->type;
+ obj_desc = acpi_ns_get_attached_object ((struct acpi_namespace_node *) obj_desc);
+ }
+ break;
+
+ default:
+ return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+ }
+
+
+ /*
+ * If type is anything other than a reference, we are done
+ */
+ if (type != ACPI_TYPE_LOCAL_REFERENCE) {
+ goto exit;
+ }
+
+ /*
+ * For reference objects created via the ref_of or Index operators,
+ * we need to get to the base object (as per the ACPI specification
+ * of the object_type and size_of operators). This means traversing
+ * the list of possibly many nested references.
+ */
+ while (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_LOCAL_REFERENCE) {
+ switch (obj_desc->reference.opcode) {
+ case AML_REF_OF_OP:
+
+ /* Dereference the reference pointer */
+
+ node = obj_desc->reference.object;
+
+ /* All "References" point to a NS node */
+
+ if (ACPI_GET_DESCRIPTOR_TYPE (node) != ACPI_DESC_TYPE_NAMED) {
+ ACPI_REPORT_ERROR (("acpi_ex_resolve_multiple: Not a NS node %p [%s]\n",
+ node, acpi_ut_get_descriptor_name (node)));
+ return_ACPI_STATUS (AE_AML_INTERNAL);
+ }
+
+ /* Get the attached object */
+
+ obj_desc = acpi_ns_get_attached_object (node);
+ if (!obj_desc) {
+ /* No object, use the NS node type */
+
+ type = acpi_ns_get_type (node);
+ goto exit;
+ }
+
+ /* Check for circular references */
+
+ if (obj_desc == operand) {
+ return_ACPI_STATUS (AE_AML_CIRCULAR_REFERENCE);
+ }
+ break;
+
+
+ case AML_INDEX_OP:
+
+ /* Get the type of this reference (index into another object) */
+
+ type = obj_desc->reference.target_type;
+ if (type != ACPI_TYPE_PACKAGE) {
+ goto exit;
+ }
+
+ /*
+ * The main object is a package, we want to get the type
+ * of the individual package element that is referenced by
+ * the index.
+ *
+ * This could of course in turn be another reference object.
+ */
+ obj_desc = *(obj_desc->reference.where);
+ if (!obj_desc) {
+ /* NULL package elements are allowed */
+
+ type = 0; /* Uninitialized */
+ goto exit;
+ }
+ break;
+
+
+ case AML_INT_NAMEPATH_OP:
+
+ /* Dereference the reference pointer */
+
+ node = obj_desc->reference.node;
+
+ /* All "References" point to a NS node */
+
+ if (ACPI_GET_DESCRIPTOR_TYPE (node) != ACPI_DESC_TYPE_NAMED) {
+ ACPI_REPORT_ERROR (("acpi_ex_resolve_multiple: Not a NS node %p [%s]\n",
+ node, acpi_ut_get_descriptor_name (node)));
+ return_ACPI_STATUS (AE_AML_INTERNAL);
+ }
+
+ /* Get the attached object */
+
+ obj_desc = acpi_ns_get_attached_object (node);
+ if (!obj_desc) {
+ /* No object, use the NS node type */
+
+ type = acpi_ns_get_type (node);
+ goto exit;
+ }
+
+ /* Check for circular references */
+
+ if (obj_desc == operand) {
+ return_ACPI_STATUS (AE_AML_CIRCULAR_REFERENCE);
+ }
+ break;
+
+
+ case AML_LOCAL_OP:
+ case AML_ARG_OP:
+
+ if (return_desc) {
+ status = acpi_ds_method_data_get_value (obj_desc->reference.opcode,
+ obj_desc->reference.offset, walk_state, &obj_desc);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+ acpi_ut_remove_reference (obj_desc);
+ }
+ else {
+ status = acpi_ds_method_data_get_node (obj_desc->reference.opcode,
+ obj_desc->reference.offset, walk_state, &node);
+ if (ACPI_FAILURE (status)) {
+ return_ACPI_STATUS (status);
+ }
+
+ obj_desc = acpi_ns_get_attached_object (node);
+ if (!obj_desc) {
+ type = ACPI_TYPE_ANY;
+ goto exit;
+ }
+ }
+ break;
+
+
+ case AML_DEBUG_OP:
+
+ /* The Debug Object is of type "debug_object" */
+
+ type = ACPI_TYPE_DEBUG_OBJECT;
+ goto exit;
+
+
+ default:
+
+ ACPI_REPORT_ERROR (("acpi_ex_resolve_multiple: Unknown Reference subtype %X\n",
+ obj_desc->reference.opcode));
+ return_ACPI_STATUS (AE_AML_INTERNAL);
+ }
+ }
+
+ /*
+ * Now we are guaranteed to have an object that has not been created
+ * via the ref_of or Index operators.
+ */
+ type = ACPI_GET_OBJECT_TYPE (obj_desc);
+
+
+exit:
+ /* Convert internal types to external types */
+
+ switch (type) {
+ case ACPI_TYPE_LOCAL_REGION_FIELD:
+ case ACPI_TYPE_LOCAL_BANK_FIELD:
+ case ACPI_TYPE_LOCAL_INDEX_FIELD:
+
+ type = ACPI_TYPE_FIELD_UNIT;
+ break;
+
+ case ACPI_TYPE_LOCAL_SCOPE:
+
+ /* Per ACPI Specification, Scope is untyped */
+
+ type = ACPI_TYPE_ANY;
+ break;
+
+ default:
+ /* No change to Type required */
+ break;
+ }
+
+ *return_type = type;
+ if (return_desc) {
+ *return_desc = obj_desc;
+ }
+ return_ACPI_STATUS (AE_OK);
+}
+
+