blob: 4bc985f1e2e4d2f5173a2ee0f7cbb33e0ad9e4a7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/* 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);
extern struct irq_domain *
irq_remapping_get_ir_irq_domain(struct irq_alloc_info *info);
extern struct irq_domain *
irq_remapping_get_irq_domain(struct irq_alloc_info *info);
/* 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)
{
}
static inline struct irq_domain *
irq_remapping_get_ir_irq_domain(struct irq_alloc_info *info)
{
return NULL;
}
static inline struct irq_domain *
irq_remapping_get_irq_domain(struct irq_alloc_info *info)
{
return NULL;
}
#endif /* CONFIG_IRQ_REMAP */
#endif /* __X86_IRQ_REMAPPING_H */
|
