path: root/kernel/irq/msi.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2014 Intel Corp.
 * Author: Jiang Liu <jiang.liu@linux.intel.com>
 *
 * This file is licensed under GPLv2.
 *
 * This file contains common code to support Message Signaled Interrupts for
 * PCI compatible and non PCI compatible devices.
 */
#include <linux/device.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/msi.h>
#include <linux/mutex.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
#include <linux/types.h>
#include <linux/xarray.h>

#include "internals.h"

/**
 * struct msi_device_data - MSI per device data
 * @properties:		MSI properties which are interesting to drivers
 * @mutex:		Mutex protecting the MSI descriptor store
 * @__domains:		Internal data for per device MSI domains
 * @__iter_idx:		Index to search the next entry for iterators
 */
struct msi_device_data {
	unsigned long			properties;
	struct mutex			mutex;
	struct msi_dev_domain		__domains[M