diff options
Diffstat (limited to 'drivers/iommu/irq_remapping.h')
| -rw-r--r-- | drivers/iommu/irq_remapping.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/iommu/irq_remapping.h b/drivers/iommu/irq_remapping.h new file mode 100644 index 0000000000..8c89cb947c --- /dev/null +++ b/drivers/iommu/irq_remapping.h @@ -0,0 +1,59 @@ +/* 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)(void); +}; + +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 */ |