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With interrupt remapping a special function is used to change the affinity of an IO-APIC interrupt. Abstract this with a function pointer. Signed-off-by: Joerg Roedel <joro@8bytes.org> Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
81 lines
2.8 KiB
C
81 lines
2.8 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 the interface of the interrupt remapping code to
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* the x86 interrupt management code.
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*/
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#ifndef __X86_IRQ_REMAPPING_H
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#define __X86_IRQ_REMAPPING_H
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#include <asm/io_apic.h>
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#ifdef CONFIG_IRQ_REMAP
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extern int irq_remapping_enabled;
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extern void setup_irq_remapping_ops(void);
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extern int irq_remapping_supported(void);
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extern int irq_remapping_prepare(void);
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extern int irq_remapping_enable(void);
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extern void irq_remapping_disable(void);
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extern int irq_remapping_reenable(int);
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extern int irq_remap_enable_fault_handling(void);
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extern int setup_ioapic_remapped_entry(int irq,
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struct IO_APIC_route_entry *entry,
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unsigned int destination,
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int vector,
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struct io_apic_irq_attr *attr);
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extern void free_remapped_irq(int irq);
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extern void compose_remapped_msi_msg(struct pci_dev *pdev,
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unsigned int irq, unsigned int dest,
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struct msi_msg *msg, u8 hpet_id);
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extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id);
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#else /* CONFIG_IRQ_REMAP */
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#define irq_remapping_enabled 0
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static inline void setup_irq_remapping_ops(void) { }
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static inline int irq_remapping_supported(void) { return 0; }
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static inline int irq_remapping_prepare(void) { return -ENODEV; }
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static inline int irq_remapping_enable(void) { return -ENODEV; }
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static inline void irq_remapping_disable(void) { }
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static inline int irq_remapping_reenable(int eim) { return -ENODEV; }
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static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; }
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static inline int setup_ioapic_remapped_entry(int irq,
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struct IO_APIC_route_entry *entry,
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unsigned int destination,
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int vector,
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struct io_apic_irq_attr *attr)
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{
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return -ENODEV;
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}
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static inline void free_remapped_irq(int irq) { }
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static inline void compose_remapped_msi_msg(struct pci_dev *pdev,
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unsigned int irq, unsigned int dest,
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struct msi_msg *msg, u8 hpet_id)
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{
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}
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static inline int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
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{
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return -ENODEV;
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}
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#endif /* CONFIG_IRQ_REMAP */
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#endif /* __X86_IRQ_REMAPPING_H */
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