1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * Copyright (C) 2012 Advanced Micro Devices, Inc. 4 * Author: Joerg Roedel <joerg.roedel@amd.com> 5 * 6 * This header file contains the interface of the interrupt remapping code to 7 * the x86 interrupt management code. 8 */ 9 10#ifndef __X86_IRQ_REMAPPING_H 11#define __X86_IRQ_REMAPPING_H 12 13#include <asm/irqdomain.h> 14#include <asm/hw_irq.h> 15#include <asm/io_apic.h> 16 17struct msi_msg; 18struct irq_alloc_info; 19 20enum irq_remap_cap { 21 IRQ_POSTING_CAP = 0, 22}; 23 24enum { 25 IRQ_REMAP_XAPIC_MODE, 26 IRQ_REMAP_X2APIC_MODE, 27}; 28 29struct vcpu_data { 30 u64 pi_desc_addr; /* Physical address of PI Descriptor */ 31 u32 vector; /* Guest vector of the interrupt */ 32}; 33 34#ifdef CONFIG_IRQ_REMAP 35 36extern raw_spinlock_t irq_2_ir_lock; 37 38extern bool irq_remapping_cap(enum irq_remap_cap cap); 39extern void set_irq_remapping_broken(void); 40extern int irq_remapping_prepare(void); 41extern int irq_remapping_enable(void); 42extern void irq_remapping_disable(void); 43extern int irq_remapping_reenable(int); 44extern int irq_remap_enable_fault_handling(void); 45extern void panic_if_irq_remap(const char *msg); 46 47/* Get parent irqdomain for interrupt remapping irqdomain */ 48static inline struct irq_domain *arch_get_ir_parent_domain(void) 49{ 50 return x86_vector_domain; 51} 52 53#else /* CONFIG_IRQ_REMAP */ 54 55static inline bool irq_remapping_cap(enum irq_remap_cap cap) { return 0; } 56static inline void set_irq_remapping_broken(void) { } 57static inline int irq_remapping_prepare(void) { return -ENODEV; } 58static inline int irq_remapping_enable(void) { return -ENODEV; } 59static inline void irq_remapping_disable(void) { } 60static inline int irq_remapping_reenable(int eim) { return -ENODEV; } 61static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; } 62 63static inline void panic_if_irq_remap(const char *msg) 64{ 65} 66 67#endif /* CONFIG_IRQ_REMAP */ 68#endif /* __X86_IRQ_REMAPPING_H */ 69