arch/ia64/kernel/acpi-ext.c


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/*
 * (c) Copyright 2003, 2006 Hewlett-Packard Development Company, L.P.
 *	Alex Williamson <alex.williamson@hp.com>
 *	Bjorn Helgaas <bjorn.helgaas@hp.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/acpi.h>

#include <asm/acpi-ext.h>

/*
 * Device CSRs that do not appear in PCI config space should be described
 * via ACPI.  This would normally be done with Address Space Descriptors
 * marked as "consumer-only," but old versions of Windows and Linux ignore
 * the producer/consumer flag, so HP invented a vendor-defined resource to
 * describe the location and size of CSR space.
 */

struct acpi_vendor_uuid hp_ccsr_uuid = {
	.subtype = 2,
	.data = { 0xf9, 0xad, 0xe9, 0x69, 0x4f, 0x92, 0x5f, 0xab, 0xf6, 0x4a,
	    0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad },
};

static acpi_status hp_ccsr_locate(acpi_handle obj, u64 *base, u64 *length)
{
	acpi_status status;
	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
	struct acpi_resource *resource;
	struct acpi_resource_vendor_typed *vendor;

	status = acpi_get_vendor_resource(obj, METHOD_NAME__CRS,