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 stuff that is shared between different interrupt
19 * remapping drivers but with no need to be visible outside of the IOMMU layer.
22 #ifndef __INTR_REMAPPING_H
23 #define __INTR_REMAPPING_H
25 #ifdef CONFIG_IRQ_REMAP
27 struct IO_APIC_route_entry;
28 struct io_apic_irq_attr;
32 extern int disable_intremap;
33 extern int disable_sourceid_checking;
34 extern int no_x2apic_optout;
36 struct irq_remap_ops {
37 /* Check whether Interrupt Remapping is supported */
38 int (*supported)(void);
40 /* Initializes hardware and makes it ready for remapping interrupts */
41 int (*hardware_init)(void);
43 /* Enables the remapping hardware */
44 int (*hardware_enable)(void);
46 /* Disables the remapping hardware */
47 void (*hardware_disable)(void);
49 /* Reenables the remapping hardware */
50 int (*hardware_reenable)(int);
52 /* Enable fault handling */
53 int (*enable_faulting)(void);
55 /* IO-APIC setup routine */
56 int (*setup_ioapic_entry)(int irq, struct IO_APIC_route_entry *,
58 struct io_apic_irq_attr *);
60 /* Set the CPU affinity of a remapped interrupt */
61 int (*set_affinity)(struct irq_data *data, const struct cpumask *mask,
68 extern struct irq_remap_ops intel_irq_remap_ops;
70 #endif /* CONFIG_IRQ_REMAP */
72 #endif /* __INTR_REMAPPING_H */