1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright (C) 2012 Advanced Micro Devices, Inc.
4 * Author: Joerg Roedel <jroedel@suse.de>
5 *
6 * This header file contains stuff that is shared between different interrupt
7 * remapping drivers but with no need to be visible outside of the IOMMU layer.
8 */
9
10#ifndef __IRQ_REMAPPING_H
11#define __IRQ_REMAPPING_H
12
13#ifdef CONFIG_IRQ_REMAP
14
15struct irq_data;
16struct msi_msg;
17struct irq_domain;
18struct irq_alloc_info;
19
20extern int irq_remap_broken;
21extern int disable_sourceid_checking;
22extern int no_x2apic_optout;
23extern int irq_remapping_enabled;
24
25extern int disable_irq_post;
26
27struct irq_remap_ops {
28 /* The supported capabilities */
29 int capability;
30
31 /* Initializes hardware and makes it ready for remapping interrupts */
32 int (*prepare)(void);
33
34 /* Enables the remapping hardware */
35 int (*enable)(void);
36
37 /* Disables the remapping hardware */
38 void (*disable)(void);
39
40 /* Reenables the remapping hardware */
41 int (*reenable)(int);
42
43 /* Enable fault handling */
44 int (*enable_faulting)(unsigned int);
45};
46
47extern struct irq_remap_ops intel_irq_remap_ops;
48extern struct irq_remap_ops amd_iommu_irq_ops;
49extern struct irq_remap_ops hyperv_irq_remap_ops;
50
51#else /* CONFIG_IRQ_REMAP */
52
53#define irq_remapping_enabled 0
54#define irq_remap_broken 0
55#define disable_irq_post 1
56
57#endif /* CONFIG_IRQ_REMAP */
58
59#endif /* __IRQ_REMAPPING_H */
60