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* Copyright (C) 2012 Advanced Micro Devices, Inc.
* Author: Joerg Roedel <>
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* 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.
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)(void);
/* Get the irqdomain associated the IOMMU device */
struct irq_domain *(*get_ir_irq_domain)(struct irq_alloc_info *);
/* Get the MSI irqdomain associated with the IOMMU device */
struct irq_domain *(*get_irq_domain)(struct irq_alloc_info *);
extern struct irq_remap_ops intel_irq_remap_ops;
extern struct irq_remap_ops amd_iommu_irq_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 */