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_INTR_REMAPPING_H
23 #define __X86_INTR_REMAPPING_H
25 #ifdef CONFIG_IRQ_REMAP
27 struct IO_APIC_route_entry;
28 struct io_apic_irq_attr;
31 extern int intr_remapping_enabled;
33 extern void setup_intr_remapping(void);
34 extern int intr_remapping_supported(void);
35 extern int intr_hardware_init(void);
36 extern int intr_hardware_enable(void);
37 extern void intr_hardware_disable(void);
38 extern int intr_hardware_reenable(int);
39 extern int intr_enable_fault_handling(void);
40 extern int intr_setup_ioapic_entry(int irq,
41 struct IO_APIC_route_entry *entry,
42 unsigned int destination, int vector,
43 struct io_apic_irq_attr *attr);
44 extern int intr_set_affinity(struct irq_data *data,
45 const struct cpumask *mask,
47 extern void intr_free_irq(int irq);
48 extern void intr_compose_msi_msg(struct pci_dev *pdev,
49 unsigned int irq, unsigned int dest,
50 struct msi_msg *msg, u8 hpet_id);
51 extern int intr_msi_alloc_irq(struct pci_dev *pdev, int irq, int nvec);
52 extern int intr_msi_setup_irq(struct pci_dev *pdev, unsigned int irq,
53 int index, int sub_handle);
54 extern int intr_setup_hpet_msi(unsigned int irq, unsigned int id);
56 #else /* CONFIG_IRQ_REMAP */
58 #define intr_remapping_enabled 0
60 static inline void setup_intr_remapping(void) { }
61 static inline int intr_remapping_supported(void) { return 0; }
62 static inline int intr_hardware_init(void) { return -ENODEV; }
63 static inline int intr_hardware_enable(void) { return -ENODEV; }
64 static inline void intr_hardware_disable(void) { }
65 static inline int intr_hardware_reenable(int eim) { return -ENODEV; }
66 static inline int intr_enable_fault_handling(void) { return -ENODEV; }
67 static inline int intr_setup_ioapic_entry(int irq,
68 struct IO_APIC_route_entry *entry,
69 unsigned int destination, int vector,
70 struct io_apic_irq_attr *attr)
74 static inline int intr_set_affinity(struct irq_data *data,
75 const struct cpumask *mask,
80 static inline void intr_free_irq(int irq) { }
81 static inline void intr_compose_msi_msg(struct pci_dev *pdev,
82 unsigned int irq, unsigned int dest,
83 struct msi_msg *msg, u8 hpet_id)
86 static inline int intr_msi_alloc_irq(struct pci_dev *pdev, int irq, int nvec)
90 static inline int intr_msi_setup_irq(struct pci_dev *pdev, unsigned int irq,
91 int index, int sub_handle)
95 static inline int intr_setup_hpet_msi(unsigned int irq, unsigned int id)
99 #endif /* CONFIG_IRQ_REMAP */
101 #endif /* __X86_INTR_REMAPPING_H */