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72 lines
2.0 KiB
72 lines
2.0 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Copyright (C) 2012 Advanced Micro Devices, Inc. |
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* Author: Joerg Roedel <[email protected]> |
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* |
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* This header file contains the interface of the interrupt remapping code to |
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* the x86 interrupt management code. |
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*/ |
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#ifndef __X86_IRQ_REMAPPING_H |
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#define __X86_IRQ_REMAPPING_H |
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#include <asm/irqdomain.h> |
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#include <asm/hw_irq.h> |
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#include <asm/io_apic.h> |
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struct msi_msg; |
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struct irq_alloc_info; |
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enum irq_remap_cap { |
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IRQ_POSTING_CAP = 0, |
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}; |
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enum { |
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IRQ_REMAP_XAPIC_MODE, |
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IRQ_REMAP_X2APIC_MODE, |
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}; |
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struct vcpu_data { |
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u64 pi_desc_addr; /* Physical address of PI Descriptor */ |
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u32 vector; /* Guest vector of the interrupt */ |
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}; |
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#ifdef CONFIG_IRQ_REMAP |
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extern raw_spinlock_t irq_2_ir_lock; |
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extern bool irq_remapping_cap(enum irq_remap_cap cap); |
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extern void set_irq_remapping_broken(void); |
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extern int irq_remapping_prepare(void); |
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extern int irq_remapping_enable(void); |
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extern void irq_remapping_disable(void); |
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extern int irq_remapping_reenable(int); |
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extern int irq_remap_enable_fault_handling(void); |
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extern void panic_if_irq_remap(const char *msg); |
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/* Create PCI MSI/MSIx irqdomain, use @parent as the parent irqdomain. */ |
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extern struct irq_domain * |
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arch_create_remap_msi_irq_domain(struct irq_domain *par, const char *n, int id); |
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/* Get parent irqdomain for interrupt remapping irqdomain */ |
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static inline struct irq_domain *arch_get_ir_parent_domain(void) |
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{ |
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return x86_vector_domain; |
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} |
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#else /* CONFIG_IRQ_REMAP */ |
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static inline bool irq_remapping_cap(enum irq_remap_cap cap) { return 0; } |
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static inline void set_irq_remapping_broken(void) { } |
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static inline int irq_remapping_prepare(void) { return -ENODEV; } |
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static inline int irq_remapping_enable(void) { return -ENODEV; } |
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static inline void irq_remapping_disable(void) { } |
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static inline int irq_remapping_reenable(int eim) { return -ENODEV; } |
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static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; } |
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static inline void panic_if_irq_remap(const char *msg) |
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{ |
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} |
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#endif /* CONFIG_IRQ_REMAP */ |
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#endif /* __X86_IRQ_REMAPPING_H */
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