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)(void);
45
46	/* Get the irqdomain associated the IOMMU device */
47	struct irq_domain *(*get_ir_irq_domain)(struct irq_alloc_info *);
48
49	/* Get the MSI irqdomain associated with the IOMMU device */
50	struct irq_domain *(*get_irq_domain)(struct irq_alloc_info *);
51};
52
53extern struct irq_remap_ops intel_irq_remap_ops;
54extern struct irq_remap_ops amd_iommu_irq_ops;
55extern struct irq_remap_ops hyperv_irq_remap_ops;
56
57#else  /* CONFIG_IRQ_REMAP */
58
59#define irq_remapping_enabled 0
60#define irq_remap_broken      0
61#define disable_irq_post      1
62
63#endif /* CONFIG_IRQ_REMAP */
64
65#endif /* __IRQ_REMAPPING_H */