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 0000000..e0fc6ab
--- /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);
+}
+
+