mirror of https://gitee.com/openkylin/linux.git
95 lines
2.7 KiB
C
95 lines
2.7 KiB
C
/*
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* Copyright (C) 2012 Advanced Micro Devices, Inc.
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* Author: Joerg Roedel <joerg.roedel@amd.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* This header file contains stuff that is shared between different interrupt
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* remapping drivers but with no need to be visible outside of the IOMMU layer.
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*/
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#ifndef __IRQ_REMAPPING_H
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#define __IRQ_REMAPPING_H
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#ifdef CONFIG_IRQ_REMAP
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struct IO_APIC_route_entry;
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struct io_apic_irq_attr;
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struct irq_data;
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struct cpumask;
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struct pci_dev;
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struct msi_msg;
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extern int disable_irq_remap;
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extern int disable_sourceid_checking;
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extern int no_x2apic_optout;
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struct irq_remap_ops {
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/* Check whether Interrupt Remapping is supported */
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int (*supported)(void);
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/* Initializes hardware and makes it ready for remapping interrupts */
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int (*prepare)(void);
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/* Enables the remapping hardware */
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int (*enable)(void);
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/* Disables the remapping hardware */
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void (*disable)(void);
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/* Reenables the remapping hardware */
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int (*reenable)(int);
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/* Enable fault handling */
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int (*enable_faulting)(void);
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/* IO-APIC setup routine */
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int (*setup_ioapic_entry)(int irq, struct IO_APIC_route_entry *,
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unsigned int, int,
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struct io_apic_irq_attr *);
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/* Set the CPU affinity of a remapped interrupt */
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int (*set_affinity)(struct irq_data *data, const struct cpumask *mask,
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bool force);
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/* Free an IRQ */
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int (*free_irq)(int);
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/* Create MSI msg to use for interrupt remapping */
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void (*compose_msi_msg)(struct pci_dev *,
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unsigned int, unsigned int,
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struct msi_msg *, u8);
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/* Allocate remapping resources for MSI */
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int (*msi_alloc_irq)(struct pci_dev *, int, int);
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/* Setup the remapped MSI irq */
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int (*msi_setup_irq)(struct pci_dev *, unsigned int, int, int);
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/* Setup interrupt remapping for an HPET MSI */
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int (*setup_hpet_msi)(unsigned int, unsigned int);
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};
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extern struct irq_remap_ops intel_irq_remap_ops;
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extern struct irq_remap_ops amd_iommu_irq_ops;
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#else /* CONFIG_IRQ_REMAP */
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#define irq_remapping_enabled 0
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#define disable_irq_remap 1
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#endif /* CONFIG_IRQ_REMAP */
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#endif /* __IRQ_REMAPPING_H */
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