2 * Copyright (C) 2012 Advanced Micro Devices, Inc.
3 * Author: Joerg Roedel <jroedel@suse.de>
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 __IRQ_REMAPPING_H
23 #define __IRQ_REMAPPING_H
25 #ifdef CONFIG_IRQ_REMAP
30 struct irq_alloc_info;
32 extern int irq_remap_broken;
33 extern int disable_sourceid_checking;
34 extern int no_x2apic_optout;
35 extern int irq_remapping_enabled;
37 extern int disable_irq_post;
39 struct irq_remap_ops {
40 /* The supported capabilities */
43 /* Initializes hardware and makes it ready for remapping interrupts */
46 /* Enables the remapping hardware */
49 /* Disables the remapping hardware */
50 void (*disable)(void);
52 /* Reenables the remapping hardware */
55 /* Enable fault handling */
56 int (*enable_faulting)(void);
58 /* Get the irqdomain associated the IOMMU device */
59 struct irq_domain *(*get_ir_irq_domain)(struct irq_alloc_info *);
61 /* Get the MSI irqdomain associated with the IOMMU device */
62 struct irq_domain *(*get_irq_domain)(struct irq_alloc_info *);
65 extern struct irq_remap_ops intel_irq_remap_ops;
66 extern struct irq_remap_ops amd_iommu_irq_ops;
68 extern void ir_ack_apic_edge(struct irq_data *data);
70 #else /* CONFIG_IRQ_REMAP */
72 #define irq_remapping_enabled 0
73 #define irq_remap_broken 0
74 #define disable_irq_post 1
76 #endif /* CONFIG_IRQ_REMAP */
78 #endif /* __IRQ_REMAPPING_H */