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Joerg Roedel736baef2012-03-30 11:47:00 -07001/*
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 stuff that is shared between different interrupt
19 * remapping drivers but with no need to be visible outside of the IOMMU layer.
20 */
21
Suresh Siddha8a8f4222012-03-30 11:47:08 -070022#ifndef __IRQ_REMAPPING_H
23#define __IRQ_REMAPPING_H
Joerg Roedel736baef2012-03-30 11:47:00 -070024
25#ifdef CONFIG_IRQ_REMAP
26
Joerg Roedel0c3f1732012-03-30 11:47:02 -070027struct IO_APIC_route_entry;
28struct io_apic_irq_attr;
Joerg Roedel4c1bad62012-03-30 11:47:03 -070029struct irq_data;
30struct cpumask;
Joerg Roedel5e2b9302012-03-30 11:47:05 -070031struct pci_dev;
32struct msi_msg;
Joerg Roedel0c3f1732012-03-30 11:47:02 -070033
Suresh Siddha95a02e92012-03-30 11:47:07 -070034extern int disable_irq_remap;
Joerg Roedel736baef2012-03-30 11:47:00 -070035extern int disable_sourceid_checking;
36extern int no_x2apic_optout;
37
38struct irq_remap_ops {
39 /* Check whether Interrupt Remapping is supported */
40 int (*supported)(void);
41
42 /* Initializes hardware and makes it ready for remapping interrupts */
Suresh Siddha95a02e92012-03-30 11:47:07 -070043 int (*prepare)(void);
Joerg Roedel736baef2012-03-30 11:47:00 -070044
45 /* Enables the remapping hardware */
Suresh Siddha95a02e92012-03-30 11:47:07 -070046 int (*enable)(void);
Joerg Roedel4f3d8b62012-03-30 11:47:01 -070047
48 /* Disables the remapping hardware */
Suresh Siddha95a02e92012-03-30 11:47:07 -070049 void (*disable)(void);
Joerg Roedel4f3d8b62012-03-30 11:47:01 -070050
51 /* Reenables the remapping hardware */
Suresh Siddha95a02e92012-03-30 11:47:07 -070052 int (*reenable)(int);
Joerg Roedel4f3d8b62012-03-30 11:47:01 -070053
54 /* Enable fault handling */
55 int (*enable_faulting)(void);
Joerg Roedel0c3f1732012-03-30 11:47:02 -070056
57 /* IO-APIC setup routine */
58 int (*setup_ioapic_entry)(int irq, struct IO_APIC_route_entry *,
59 unsigned int, int,
60 struct io_apic_irq_attr *);
Joerg Roedel4c1bad62012-03-30 11:47:03 -070061
62 /* Set the CPU affinity of a remapped interrupt */
63 int (*set_affinity)(struct irq_data *data, const struct cpumask *mask,
64 bool force);
Joerg Roedel9d619f62012-03-30 11:47:04 -070065
66 /* Free an IRQ */
67 int (*free_irq)(int);
Joerg Roedel5e2b9302012-03-30 11:47:05 -070068
69 /* Create MSI msg to use for interrupt remapping */
70 void (*compose_msi_msg)(struct pci_dev *,
71 unsigned int, unsigned int,
72 struct msi_msg *, u8);
73
74 /* Allocate remapping resources for MSI */
75 int (*msi_alloc_irq)(struct pci_dev *, int, int);
76
77 /* Setup the remapped MSI irq */
78 int (*msi_setup_irq)(struct pci_dev *, unsigned int, int, int);
79
80 /* Setup interrupt remapping for an HPET MSI */
81 int (*setup_hpet_msi)(unsigned int, unsigned int);
Joerg Roedel736baef2012-03-30 11:47:00 -070082};
83
84extern struct irq_remap_ops intel_irq_remap_ops;
85
86#endif /* CONFIG_IRQ_REMAP */
87
Suresh Siddha8a8f4222012-03-30 11:47:08 -070088#endif /* __IRQ_REMAPPING_H */