73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (C) 2012 Advanced Micro Devices, Inc.
|
|
* Author: Joerg Roedel <joerg.roedel@amd.com>
|
|
*
|
|
* 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/irqdomain.h>
|
|
#include <asm/hw_irq.h>
|
|
#include <asm/io_apic.h>
|
|
|
|
struct msi_msg;
|
|
struct irq_alloc_info;
|
|
|
|
enum irq_remap_cap {
|
|
IRQ_POSTING_CAP = 0,
|
|
};
|
|
|
|
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 */
|
|
};
|
|
|
|
#ifdef CONFIG_IRQ_REMAP
|
|
|
|
extern raw_spinlock_t irq_2_ir_lock;
|
|
|
|
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 void panic_if_irq_remap(const char *msg);
|
|
|
|
/* Create PCI MSI/MSIx irqdomain, use @parent as the parent irqdomain. */
|
|
extern struct irq_domain *
|
|
arch_create_remap_msi_irq_domain(struct irq_domain *par, const char *n, int id);
|
|
|
|
/* Get parent irqdomain for interrupt remapping irqdomain */
|
|
static inline struct irq_domain *arch_get_ir_parent_domain(void)
|
|
{
|
|
return x86_vector_domain;
|
|
}
|
|
|
|
#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 void panic_if_irq_remap(const char *msg)
|
|
{
|
|
}
|
|
|
|
#endif /* CONFIG_IRQ_REMAP */
|
|
#endif /* __X86_IRQ_REMAPPING_H */
|