tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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
22#ifndef __X86_IRQ_REMAPPING_H
23#define __X86_IRQ_REMAPPING_H
24
25#include <asm/io_apic.h>
26
27struct IO_APIC_route_entry;
28struct io_apic_irq_attr;
29struct irq_chip;
30struct msi_msg;
31struct pci_dev;
32struct irq_cfg;
33
34#ifdef CONFIG_IRQ_REMAP
35
36extern void setup_irq_remapping_ops(void);
37extern int irq_remapping_supported(void);
38extern void set_irq_remapping_broken(void);
39extern int irq_remapping_prepare(void);
40extern int irq_remapping_enable(void);
41extern void irq_remapping_disable(void);
42extern int irq_remapping_reenable(int);
43extern int irq_remap_enable_fault_handling(void);
44extern int setup_ioapic_remapped_entry(int irq,
45 struct IO_APIC_route_entry *entry,
46 unsigned int destination,
47 int vector,
48 struct io_apic_irq_attr *attr);
49extern void free_remapped_irq(int irq);
50extern void compose_remapped_msi_msg(struct pci_dev *pdev,
51 unsigned int irq, unsigned int dest,
52 struct msi_msg *msg, u8 hpet_id);
53extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id);
54extern void panic_if_irq_remap(const char *msg);
55extern bool setup_remapped_irq(int irq,
56 struct irq_cfg *cfg,
57 struct irq_chip *chip);
58
59void irq_remap_modify_chip_defaults(struct irq_chip *chip);
60
61#else /* CONFIG_IRQ_REMAP */
62
63static inline void setup_irq_remapping_ops(void) { }
64static inline int irq_remapping_supported(void) { return 0; }
65static inline void set_irq_remapping_broken(void) { }
66static inline int irq_remapping_prepare(void) { return -ENODEV; }
67static inline int irq_remapping_enable(void) { return -ENODEV; }
68static inline void irq_remapping_disable(void) { }
69static inline int irq_remapping_reenable(int eim) { return -ENODEV; }
70static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; }
71static inline int setup_ioapic_remapped_entry(int irq,
72 struct IO_APIC_route_entry *entry,
73 unsigned int destination,
74 int vector,
75 struct io_apic_irq_attr *attr)
76{
77 return -ENODEV;
78}
79static inline void free_remapped_irq(int irq) { }
80static inline void compose_remapped_msi_msg(struct pci_dev *pdev,
81 unsigned int irq, unsigned int dest,
82 struct msi_msg *msg, u8 hpet_id)
83{
84}
85static inline int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
86{
87 return -ENODEV;
88}
89
90static inline void panic_if_irq_remap(const char *msg)
91{
92}
93
94static inline void irq_remap_modify_chip_defaults(struct irq_chip *chip)
95{
96}
97
98static inline bool setup_remapped_irq(int irq,
99 struct irq_cfg *cfg,
100 struct irq_chip *chip)
101{
102 return false;
103}
104#endif /* CONFIG_IRQ_REMAP */
105
106#endif /* __X86_IRQ_REMAPPING_H */