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736baef4 JR |
1 | /* |
2 | * Copyright (C) 2012 Advanced Micro Devices, Inc. | |
3 | * Author: Joerg Roedel <joerg.roedel@amd.com> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms of the GNU General Public License version 2 as published | |
7 | * by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
17 | * | |
18 | * This header file contains the interface of the interrupt remapping code to | |
19 | * the x86 interrupt management code. | |
20 | */ | |
21 | ||
8a8f422d SS |
22 | #ifndef __X86_IRQ_REMAPPING_H |
23 | #define __X86_IRQ_REMAPPING_H | |
736baef4 | 24 | |
d746d1eb | 25 | #include <asm/irqdomain.h> |
947045a2 | 26 | #include <asm/hw_irq.h> |
399988ee | 27 | #include <asm/io_apic.h> |
736baef4 | 28 | |
35d3d814 | 29 | struct msi_msg; |
947045a2 | 30 | struct irq_alloc_info; |
35d3d814 | 31 | |
6f281923 FW |
32 | enum irq_remap_cap { |
33 | IRQ_POSTING_CAP = 0, | |
34 | }; | |
35 | ||
399988ee | 36 | #ifdef CONFIG_IRQ_REMAP |
0c3f173a | 37 | |
959c870f | 38 | extern bool irq_remapping_cap(enum irq_remap_cap cap); |
03bbcb2e | 39 | extern void set_irq_remapping_broken(void); |
95a02e97 SS |
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); | |
6a9f5de2 | 45 | extern void panic_if_irq_remap(const char *msg); |
9b1b0e42 | 46 | |
947045a2 JL |
47 | extern struct irq_domain * |
48 | irq_remapping_get_ir_irq_domain(struct irq_alloc_info *info); | |
49 | extern struct irq_domain * | |
50 | irq_remapping_get_irq_domain(struct irq_alloc_info *info); | |
947045a2 JL |
51 | |
52 | /* Create PCI MSI/MSIx irqdomain, use @parent as the parent irqdomain. */ | |
52f518a3 | 53 | extern struct irq_domain *arch_create_msi_irq_domain(struct irq_domain *parent); |
947045a2 JL |
54 | |
55 | /* Get parent irqdomain for interrupt remapping irqdomain */ | |
56 | static inline struct irq_domain *arch_get_ir_parent_domain(void) | |
57 | { | |
58 | return x86_vector_domain; | |
59 | } | |
60 | ||
8541186f FW |
61 | struct vcpu_data { |
62 | u64 pi_desc_addr; /* Physical address of PI Descriptor */ | |
63 | u32 vector; /* Guest vector of the interrupt */ | |
64 | }; | |
65 | ||
736baef4 JR |
66 | #else /* CONFIG_IRQ_REMAP */ |
67 | ||
959c870f | 68 | static inline bool irq_remapping_cap(enum irq_remap_cap cap) { return 0; } |
03bbcb2e | 69 | static inline void set_irq_remapping_broken(void) { } |
95a02e97 SS |
70 | static inline int irq_remapping_prepare(void) { return -ENODEV; } |
71 | static inline int irq_remapping_enable(void) { return -ENODEV; } | |
72 | static inline void irq_remapping_disable(void) { } | |
73 | static inline int irq_remapping_reenable(int eim) { return -ENODEV; } | |
74 | static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; } | |
6a9f5de2 JR |
75 | |
76 | static inline void panic_if_irq_remap(const char *msg) | |
77 | { | |
78 | } | |
9b1b0e42 | 79 | |
947045a2 JL |
80 | static inline struct irq_domain * |
81 | irq_remapping_get_ir_irq_domain(struct irq_alloc_info *info) | |
82 | { | |
83 | return NULL; | |
84 | } | |
85 | ||
86 | static inline struct irq_domain * | |
87 | irq_remapping_get_irq_domain(struct irq_alloc_info *info) | |
88 | { | |
89 | return NULL; | |
90 | } | |
91 | ||
736baef4 | 92 | #endif /* CONFIG_IRQ_REMAP */ |
8a8f422d | 93 | #endif /* __X86_IRQ_REMAPPING_H */ |