linux-stable/arch/x86/include/asm/irq_remapping.h
David Woodhouse ed381fca47 x86: Kill all traces of irq_remapping_get_irq_domain()
All users are converted to use the fwspec based parent domain lookup.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201024213535.443185-30-dwmw2@infradead.org
2020-10-28 20:26:28 +01:00

72 lines
2 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 */