1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2012 Advanced Micro Devices, Inc.
4 * Author: Joerg Roedel <jroedel@suse.de>
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.
10 #ifndef __IRQ_REMAPPING_H
11 #define __IRQ_REMAPPING_H
13 #ifdef CONFIG_IRQ_REMAP
18 struct irq_alloc_info;
20 extern int irq_remap_broken;
21 extern int disable_sourceid_checking;
22 extern int no_x2apic_optout;
23 extern int irq_remapping_enabled;
25 extern int disable_irq_post;
27 struct irq_remap_ops {
28 /* The supported capabilities */
31 /* Initializes hardware and makes it ready for remapping interrupts */
34 /* Enables the remapping hardware */
37 /* Disables the remapping hardware */
38 void (*disable)(void);
40 /* Reenables the remapping hardware */
43 /* Enable fault handling */
44 int (*enable_faulting)(void);
46 /* Get the irqdomain associated to IOMMU device */
47 struct irq_domain *(*get_irq_domain)(struct irq_alloc_info *);
50 extern struct irq_remap_ops intel_irq_remap_ops;
51 extern struct irq_remap_ops amd_iommu_irq_ops;
52 extern struct irq_remap_ops hyperv_irq_remap_ops;
54 #else /* CONFIG_IRQ_REMAP */
56 #define irq_remapping_enabled 0
57 #define irq_remap_broken 0
58 #define disable_irq_post 1
60 #endif /* CONFIG_IRQ_REMAP */
62 #endif /* __IRQ_REMAPPING_H */