2 * Copyright (C) 2012 Advanced Micro Devices, Inc.
3 * Author: Joerg Roedel <joerg.roedel@amd.com>
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.
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.
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
18 * This header file contains the interface of the interrupt remapping code to
19 * the x86 interrupt management code.
22 #ifndef __X86_IRQ_REMAPPING_H
23 #define __X86_IRQ_REMAPPING_H
25 #include <asm/io_apic.h>
27 #ifdef CONFIG_IRQ_REMAP
29 extern void setup_irq_remapping_ops(void);
30 extern int irq_remapping_supported(void);
31 extern int irq_remapping_prepare(void);
32 extern int irq_remapping_enable(void);
33 extern void irq_remapping_disable(void);
34 extern int irq_remapping_reenable(int);
35 extern int irq_remap_enable_fault_handling(void);
36 extern int setup_ioapic_remapped_entry(int irq,
37 struct IO_APIC_route_entry *entry,
38 unsigned int destination,
40 struct io_apic_irq_attr *attr);
41 extern void free_remapped_irq(int irq);
42 extern void compose_remapped_msi_msg(struct pci_dev *pdev,
43 unsigned int irq, unsigned int dest,
44 struct msi_msg *msg, u8 hpet_id);
45 extern int setup_hpet_msi_remapped(unsigned int irq, unsigned int id);
46 extern void panic_if_irq_remap(const char *msg);
48 static inline bool irq_remapped(struct irq_cfg *cfg)
50 return (cfg->remapped == 1);
53 void irq_remap_modify_chip_defaults(struct irq_chip *chip);
55 #else /* CONFIG_IRQ_REMAP */
57 static inline void setup_irq_remapping_ops(void) { }
58 static inline int irq_remapping_supported(void) { return 0; }
59 static inline int irq_remapping_prepare(void) { return -ENODEV; }
60 static inline int irq_remapping_enable(void) { return -ENODEV; }
61 static inline void irq_remapping_disable(void) { }
62 static inline int irq_remapping_reenable(int eim) { return -ENODEV; }
63 static inline int irq_remap_enable_fault_handling(void) { return -ENODEV; }
64 static inline int setup_ioapic_remapped_entry(int irq,
65 struct IO_APIC_route_entry *entry,
66 unsigned int destination,
68 struct io_apic_irq_attr *attr)
72 static inline void free_remapped_irq(int irq) { }
73 static inline void compose_remapped_msi_msg(struct pci_dev *pdev,
74 unsigned int irq, unsigned int dest,
75 struct msi_msg *msg, u8 hpet_id)
78 static inline int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
83 static inline void panic_if_irq_remap(const char *msg)
87 static inline bool irq_remapped(struct irq_cfg *cfg)
92 static inline void irq_remap_modify_chip_defaults(struct irq_chip *chip)
96 #endif /* CONFIG_IRQ_REMAP */
98 #endif /* __X86_IRQ_REMAPPING_H */