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18cd52c4d9
This is friendlier to clients of the code, who are going to prepare vcpu_data structs unconditionally, even if CONFIG_IRQ_REMAP is not defined. Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
94 lines
2.9 KiB
C
94 lines
2.9 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/irqdomain.h>
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#include <asm/hw_irq.h>
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#include <asm/io_apic.h>
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struct msi_msg;
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struct irq_alloc_info;
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enum irq_remap_cap {
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IRQ_POSTING_CAP = 0,
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};
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struct vcpu_data {
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u64 pi_desc_addr; /* Physical address of PI Descriptor */
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u32 vector; /* Guest vector of the interrupt */
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};
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#ifdef CONFIG_IRQ_REMAP
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extern bool irq_remapping_cap(enum irq_remap_cap cap);
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extern void set_irq_remapping_broken(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 void panic_if_irq_remap(const char *msg);
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extern struct irq_domain *
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irq_remapping_get_ir_irq_domain(struct irq_alloc_info *info);
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extern struct irq_domain *
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irq_remapping_get_irq_domain(struct irq_alloc_info *info);
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/* Create PCI MSI/MSIx irqdomain, use @parent as the parent irqdomain. */
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extern struct irq_domain *arch_create_msi_irq_domain(struct irq_domain *parent);
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/* Get parent irqdomain for interrupt remapping irqdomain */
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static inline struct irq_domain *arch_get_ir_parent_domain(void)
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{
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return x86_vector_domain;
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}
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#else /* CONFIG_IRQ_REMAP */
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static inline bool irq_remapping_cap(enum irq_remap_cap cap) { return 0; }
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static inline void set_irq_remapping_broken(void) { }
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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 void panic_if_irq_remap(const char *msg)
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{
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}
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static inline struct irq_domain *
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irq_remapping_get_ir_irq_domain(struct irq_alloc_info *info)
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{
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return NULL;
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}
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static inline struct irq_domain *
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irq_remapping_get_irq_domain(struct irq_alloc_info *info)
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{
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return NULL;
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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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