1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2012 Advanced Micro Devices, Inc.
4 * Author: Joerg Roedel <joerg.roedel@amd.com>
6 * This header file contains the interface of the interrupt remapping code to
7 * the x86 interrupt management code.
10 #ifndef __X86_IRQ_REMAPPING_H
11 #define __X86_IRQ_REMAPPING_H
13 #include <asm/irqdomain.h>
14 #include <asm/hw_irq.h>
15 #include <asm/io_apic.h>
18 struct irq_alloc_info;
26 IRQ_REMAP_X2APIC_MODE,
30 u64 pi_desc_addr; /* Physical address of PI Descriptor */
31 u32 vector; /* Guest vector of the interrupt */
34 #ifdef CONFIG_IRQ_REMAP
36 extern raw_spinlock_t irq_2_ir_lock;
38 extern bool irq_remapping_cap(enum irq_remap_cap cap);
39 extern void set_irq_remapping_broken(void);
40 extern int irq_remapping_prepare(void);
41 extern int irq_remapping_enable(void);
42 extern void irq_remapping_disable(void);
43 extern int irq_remapping_reenable(int);
44 extern int irq_remap_enable_fault_handling(void);
45 extern void panic_if_irq_remap(const char *msg);
47 /* Create PCI MSI/MSIx irqdomain, use @parent as the parent irqdomain. */
48 extern struct irq_domain *
49 arch_create_remap_msi_irq_domain(struct irq_domain *par, const char *n, int id);
51 /* Get parent irqdomain for interrupt remapping irqdomain */
52 static inline struct irq_domain *arch_get_ir_parent_domain(void)
54 return x86_vector_domain;
57 #else /* CONFIG_IRQ_REMAP */
59 static inline bool irq_remapping_cap(enum irq_remap_cap cap) { return 0; }
60 static inline void set_irq_remapping_broken(void) { }
61 static inline int irq_remapping_prepare(void) { return -ENODEV; }
62 static inline int irq_remapping_enable(void) { return -ENODEV; }
63 static inline void irq_remapping_disable(void) { }
64 static inline int irq_remapping_reenable(int eim) { return -ENODEV; }
65 static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; }
67 static inline void panic_if_irq_remap(const char *msg)
71 #endif /* CONFIG_IRQ_REMAP */
72 #endif /* __X86_IRQ_REMAPPING_H */