Current File : //lib/modules/3.10.0-957.21.3.el7.centos.plus.x86_64/build/arch/x86/include/asm/irq_remapping.h
/*
* Copyright (C) 2012 Advanced Micro Devices, Inc.
* Author: Joerg Roedel <joerg.roedel@amd.com>
*
* 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 the interface of the interrupt remapping code to
* the x86 interrupt management code.
*/
#ifndef __X86_IRQ_REMAPPING_H
#define __X86_IRQ_REMAPPING_H
#include <asm/io_apic.h>
struct IO_APIC_route_entry;
struct io_apic_irq_attr;
struct irq_chip;
struct msi_msg;
struct pci_dev;
struct irq_cfg;
enum irq_remap_cap {
IRQ_POSTING_CAP = 0,
};
#ifdef CONFIG_IRQ_REMAP
extern bool irq_remapping_cap(enum irq_remap_cap cap);
extern void set_irq_remapping_broken(void);
extern int irq_remapping_prepare(void);
extern int irq_remapping_enable(void);
extern void irq_remapping_disable(void);
extern int irq_remapping_reenable(int);
extern int irq_remap_enable_fault_handling(void);
extern int setup_ioapic_remapped_entry(int irq,
struct IO_APIC_route_entry *entry,
unsigned int destination,
int vector,
struct io_apic_irq_attr *attr);
extern void free_remapped_irq(int irq);
extern void compose_remapped_msi_msg(struct pci_dev *pdev,
unsigned int irq, unsigned int dest,
struct msi_msg *msg, u8 hpet_id);
extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id);
extern void panic_if_irq_remap(const char *msg);
extern bool setup_remapped_irq(int irq,
struct irq_cfg *cfg,
struct irq_chip *chip);
void irq_remap_modify_chip_defaults(struct irq_chip *chip);
int irq_set_vcpu_affinity(unsigned int irq, void *vcpu_info);
enum {
IRQ_REMAP_XAPIC_MODE,
IRQ_REMAP_X2APIC_MODE,
};
struct vcpu_data {
u64 pi_desc_addr; /* Physical address of PI Descriptor */
u32 vector; /* Guest vector of the interrupt */
};
#else /* CONFIG_IRQ_REMAP */
static inline bool irq_remapping_cap(enum irq_remap_cap cap) { return 0; }
static inline void set_irq_remapping_broken(void) { }
static inline int irq_remapping_prepare(void) { return -ENODEV; }
static inline int irq_remapping_enable(void) { return -ENODEV; }
static inline void irq_remapping_disable(void) { }
static inline int irq_remapping_reenable(int eim) { return -ENODEV; }
static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; }
static inline int setup_ioapic_remapped_entry(int irq,
struct IO_APIC_route_entry *entry,
unsigned int destination,
int vector,
struct io_apic_irq_attr *attr)
{
return -ENODEV;
}
static inline void free_remapped_irq(int irq) { }
static inline void compose_remapped_msi_msg(struct pci_dev *pdev,
unsigned int irq, unsigned int dest,
struct msi_msg *msg, u8 hpet_id)
{
}
static inline int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
{
return -ENODEV;
}
static inline void panic_if_irq_remap(const char *msg)
{
}
static inline void irq_remap_modify_chip_defaults(struct irq_chip *chip)
{
}
static inline bool setup_remapped_irq(int irq,
struct irq_cfg *cfg,
struct irq_chip *chip)
{
return false;
}
int irq_set_vcpu_affinity(unsigned int irq, void *vcpu_info)
{
return -ENOSYS;
}
#endif /* CONFIG_IRQ_REMAP */
#define dmar_alloc_hwirq() irq_alloc_hwirq(-1)
#define dmar_free_hwirq irq_free_hwirq
#endif /* __X86_IRQ_REMAPPING_H */
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