diff options
Diffstat (limited to 'drivers/iommu/irq_remapping.h')
| -rw-r--r-- | drivers/iommu/irq_remapping.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/drivers/iommu/irq_remapping.h b/drivers/iommu/irq_remapping.h new file mode 100644 index 000000000..7c70cc29f --- /dev/null +++ b/drivers/iommu/irq_remapping.h @@ -0,0 +1,92 @@ +/* + * Copyright (C) 2012 Advanced Micro Devices, Inc. + * Author: Joerg Roedel <jroedel@suse.de> + * + * 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 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * 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. + */ + +#ifndef __IRQ_REMAPPING_H +#define __IRQ_REMAPPING_H + +#ifdef CONFIG_IRQ_REMAP + +struct IO_APIC_route_entry; +struct io_apic_irq_attr; +struct irq_data; +struct cpumask; +struct pci_dev; +struct msi_msg; + +extern int irq_remap_broken; +extern int disable_sourceid_checking; +extern int no_x2apic_optout; +extern int irq_remapping_enabled; + +struct irq_remap_ops { + /* 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); + + /* IO-APIC setup routine */ + int (*setup_ioapic_entry)(int irq, struct IO_APIC_route_entry *, + unsigned int, int, + struct io_apic_irq_attr *); + + /* Set the CPU affinity of a remapped interrupt */ + int (*set_affinity)(struct irq_data *data, const struct cpumask *mask, + bool force); + + /* Free an IRQ */ + int (*free_irq)(int); + + /* Create MSI msg to use for interrupt remapping */ + void (*compose_msi_msg)(struct pci_dev *, + unsigned int, unsigned int, + struct msi_msg *, u8); + + /* Allocate remapping resources for MSI */ + int (*msi_alloc_irq)(struct pci_dev *, int, int); + + /* Setup the remapped MSI irq */ + int (*msi_setup_irq)(struct pci_dev *, unsigned int, int, int); + + /* Setup interrupt remapping for an HPET MSI */ + int (*alloc_hpet_msi)(unsigned int, unsigned int); +}; + +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 + +#endif /* CONFIG_IRQ_REMAP */ + +#endif /* __IRQ_REMAPPING_H */ |