summaryrefslogtreecommitdiffstats
path: root/drivers/iommu/irq_remapping.h
blob: 0d6f140b5e0148c06452de0dcd916eb39a5589ef (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2012 Advanced Micro Devices, Inc.
 * Author: Joerg Roedel <jroedel@suse.de>
 *
 * This header file contains stuff that is shared between different interrupt
 * remapping drivers but with no need to be visible outside of the IOMMU layer.
 */

#ifndef __IRQ_REMAPPING_H
#define __IRQ_REMAPPING_H

#ifdef CONFIG_IRQ_REMAP

struct irq_data;
struct msi_msg;
struct irq_domain;
struct irq_alloc_info;

extern int irq_remap_broken;
extern int disable_sourceid_checking;
extern int no_x2apic_optout;
extern int irq_remapping_enabled;

extern int disable_irq_post;

struct irq_remap_ops {
	/* The supported capabilities */
	int capability;

	/* Initializes hardware and makes it ready for remapping interrupts */
	int  (*prepare)(void);

	/* Enables the remapping hardware */
	int  (*enable)(void);

	/* Disables the remapping hardware */
	void (*disable)(void);

	/* Reenables the remapping hardware */
	int  (*reenable)(int);

	/* Enable fault handling */
	int  (*enable_faulting)(unsigned int);
};

extern struct irq_remap_ops intel_irq_remap_ops;
extern struct irq_remap_ops amd_iommu_irq_ops;
extern struct irq_remap_ops hyperv_irq_remap_ops;

#else  /* CONFIG_IRQ_REMAP */

#define irq_remapping_enabled 0
#define irq_remap_broken      0
#define disable_irq_post      1

#endif /* CONFIG_IRQ_REMAP */

#endif /* __IRQ_REMAPPING_H */