Merge branch 'master' of /home/shaggy/git/linus-clean/

1 files changed, 203 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/rslist.c b/drivers/acpi/acpica/rslist.c
new file mode 100644
index 000000000000..1b1dbc69f087
--- /dev/null
+++ b/drivers/acpi/acpica/rslist.c
@@ -0,0 +1,203 @@
+/*******************************************************************************
+ *
+ * Module Name: rslist - Linked list utilities
+ *
+ ******************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2008, 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 "acresrc.h"
+
+#define _COMPONENT          ACPI_RESOURCES
+ACPI_MODULE_NAME("rslist")
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_convert_aml_to_resources
+ *
+ * PARAMETERS:  acpi_walk_aml_callback
+ *              resource_ptr            - Pointer to the buffer that will
+ *                                        contain the output structures
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Convert an AML resource to an internal representation of the
+ *              resource that is aligned and easier to access.
+ *
+ ******************************************************************************/
+acpi_status
+acpi_rs_convert_aml_to_resources(u8 * aml,
+				 u32 length,
+				 u32 offset, u8 resource_index, void **context)
+{
+	struct acpi_resource **resource_ptr =
+	    ACPI_CAST_INDIRECT_PTR(struct acpi_resource, context);
+	struct acpi_resource *resource;
+	acpi_status status;
+
+	ACPI_FUNCTION_TRACE(rs_convert_aml_to_resources);
+
+	/*
+	 * Check that the input buffer and all subsequent pointers into it
+	 * are aligned on a native word boundary. Most important on IA64
+	 */
+	resource = *resource_ptr;
+	if (ACPI_IS_MISALIGNED(resource)) {
+		ACPI_WARNING((AE_INFO,
+			      "Misaligned resource pointer %p", resource));
+	}
+
+	/* Convert the AML byte stream resource to a local resource struct */
+
+	status =
+	    acpi_rs_convert_aml_to_resource(resource,
+					    ACPI_CAST_PTR(union aml_resource,
+							  aml),
+					    acpi_gbl_get_resource_dispatch
+					    [resource_index]);
+	if (ACPI_FAILURE(status)) {
+		ACPI_EXCEPTION((AE_INFO, status,
+				"Could not convert AML resource (Type %X)",
+				*aml));
+		return_ACPI_STATUS(status);
+	}
+
+	ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
+			  "Type %.2X, AmlLength %.2X InternalLength %.2X\n",
+			  acpi_ut_get_resource_type(aml), length,
+			  resource->length));
+
+	/* Point to the next structure in the output buffer */
+
+	*resource_ptr = ACPI_ADD_PTR(void, resource, resource->length);
+	return_ACPI_STATUS(AE_OK);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_rs_convert_resources_to_aml
+ *
+ * PARAMETERS:  Resource            - Pointer to the resource linked list
+ *              aml_size_needed     - Calculated size of the byte stream
+ *                                    needed from calling acpi_rs_get_aml_length()
+ *                                    The size of the output_buffer is
+ *                                    guaranteed to be >= aml_size_needed
+ *              output_buffer       - Pointer to the buffer that will
+ *                                    contain the byte stream
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Takes the resource linked list and parses it, creating a
+ *              byte stream of resources in the caller's output buffer
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_rs_convert_resources_to_aml(struct acpi_resource *resource,
+				 acpi_size aml_size_needed, u8 * output_buffer)
+{
+	u8 *aml = output_buffer;
+	u8 *end_aml = output_buffer + aml_size_needed;
+	acpi_status status;
+
+	ACPI_FUNCTION_TRACE(rs_convert_resources_to_aml);
+
+	/* Walk the resource descriptor list, convert each descriptor */
+
+	while (aml < end_aml) {
+
+		/* Validate the (internal) Resource Type */
+
+		if (resource->type > ACPI_RESOURCE_TYPE_MAX) {
+			ACPI_ERROR((AE_INFO,
+				    "Invalid descriptor type (%X) in resource list",
+				    resource->type));
+			return_ACPI_STATUS(AE_BAD_DATA);
+		}
+
+		/* Perform the conversion */
+
+		status = acpi_rs_convert_resource_to_aml(resource, ACPI_CAST_PTR(union
+										 aml_resource,
+										 aml),
+							 acpi_gbl_set_resource_dispatch
+							 [resource->type]);
+		if (ACPI_FAILURE(status)) {
+			ACPI_EXCEPTION((AE_INFO, status,
+					"Could not convert resource (type %X) to AML",
+					resource->type));
+			return_ACPI_STATUS(status);
+		}
+
+		/* Perform final sanity check on the new AML resource descriptor */
+
+		status =
+		    acpi_ut_validate_resource(ACPI_CAST_PTR
+					      (union aml_resource, aml), NULL);
+		if (ACPI_FAILURE(status)) {
+			return_ACPI_STATUS(status);
+		}
+
+		/* Check for end-of-list, normal exit */
+
+		if (resource->type == ACPI_RESOURCE_TYPE_END_TAG) {
+
+			/* An End Tag indicates the end of the input Resource Template */
+
+			return_ACPI_STATUS(AE_OK);
+		}
+
+		/*
+		 * Extract the total length of the new descriptor and set the
+		 * Aml to point to the next (output) resource descriptor
+		 */
+		aml += acpi_ut_get_descriptor_length(aml);
+
+		/* Point to the next input resource descriptor */
+
+		resource =
+		    ACPI_ADD_PTR(struct acpi_resource, resource,
+				 resource->length);
+	}
+
+	/* Completed buffer, but did not find an end_tag resource descriptor */
+
+	return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
+}