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
27 struct IO_APIC_route_entry;
28 struct io_apic_irq_attr;
29 struct irq_chip;
30 struct msi_msg;
31 struct pci_dev;
32 struct irq_cfg;
33
34 #ifdef CONFIG_IRQ_REMAP
35
36 extern void setup_irq_remapping_ops(void);
37 extern int irq_remapping_supported(void);
38 extern void set_irq_remapping_broken(void);
39 extern int irq_remapping_prepare(void);
40 extern int irq_remapping_enable(void);
41 extern void irq_remapping_disable(void);
42 extern int irq_remapping_reenable(int);
43 extern int irq_remap_enable_fault_handling(void);
44 extern 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);
49 extern void free_remapped_irq(int irq);
50 extern void compose_remapped_msi_msg(struct pci_dev *pdev,
51 unsigned int irq, unsigned int dest,
52 struct msi_msg *msg, u8 hpet_id);
53 extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id);
54 extern void panic_if_irq_remap(const char *msg);
55 extern bool setup_remapped_irq(int irq,
56 struct irq_cfg *cfg,
57 struct irq_chip *chip);
58
59 void irq_remap_modify_chip_defaults(struct irq_chip *chip);
60
61 #else /* CONFIG_IRQ_REMAP */
62
setup_irq_remapping_ops(void)63 static inline void setup_irq_remapping_ops(void) { }
irq_remapping_supported(void)64 static inline int irq_remapping_supported(void) { return 0; }
set_irq_remapping_broken(void)65 static inline void set_irq_remapping_broken(void) { }
irq_remapping_prepare(void)66 static inline int irq_remapping_prepare(void) { return -ENODEV; }
irq_remapping_enable(void)67 static inline int irq_remapping_enable(void) { return -ENODEV; }
irq_remapping_disable(void)68 static inline void irq_remapping_disable(void) { }
irq_remapping_reenable(int eim)69 static inline int irq_remapping_reenable(int eim) { return -ENODEV; }
irq_remap_enable_fault_handling(void)70 static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; }
setup_ioapic_remapped_entry(int irq,struct IO_APIC_route_entry * entry,unsigned int destination,int vector,struct io_apic_irq_attr * attr)71 static 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 }
free_remapped_irq(int irq)79 static inline void free_remapped_irq(int irq) { }
compose_remapped_msi_msg(struct pci_dev * pdev,unsigned int irq,unsigned int dest,struct msi_msg * msg,u8 hpet_id)80 static 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 }
setup_hpet_msi_remapped(unsigned int irq,unsigned int id)85 static inline int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
86 {
87 return -ENODEV;
88 }
89
panic_if_irq_remap(const char * msg)90 static inline void panic_if_irq_remap(const char *msg)
91 {
92 }
93
irq_remap_modify_chip_defaults(struct irq_chip * chip)94 static inline void irq_remap_modify_chip_defaults(struct irq_chip *chip)
95 {
96 }
97
setup_remapped_irq(int irq,struct irq_cfg * cfg,struct irq_chip * chip)98 static 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 */
107