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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;
Neil Horman03bbcb22013-04-16 16:38:32 -040035extern int irq_remap_broken;
Joerg Roedel736baef2012-03-30 11:47:00 -070036extern int disable_sourceid_checking;
37extern int no_x2apic_optout;
Joerg Roedel078e1ee2012-09-26 12:44:43 +020038extern int irq_remapping_enabled;
Joerg Roedel736baef2012-03-30 11:47:00 -070039
40struct irq_remap_ops {
41 /* Check whether Interrupt Remapping is supported */
42 int (*supported)(void);
43
44 /* Initializes hardware and makes it ready for remapping interrupts */
Suresh Siddha95a02e92012-03-30 11:47:07 -070045 int (*prepare)(void);
Joerg Roedel736baef2012-03-30 11:47:00 -070046
47 /* Enables the remapping hardware */
Suresh Siddha95a02e92012-03-30 11:47:07 -070048 int (*enable)(void);
Joerg Roedel4f3d8b62012-03-30 11:47:01 -070049
50 /* Disables the remapping hardware */
Suresh Siddha95a02e92012-03-30 11:47:07 -070051 void (*disable)(void);
Joerg Roedel4f3d8b62012-03-30 11:47:01 -070052
53 /* Reenables the remapping hardware */
Suresh Siddha95a02e92012-03-30 11:47:07 -070054 int (*reenable)(int);
Joerg Roedel4f3d8b62012-03-30 11:47:01 -070055
56 /* Enable fault handling */
57 int (*enable_faulting)(void);
Joerg Roedel0c3f1732012-03-30 11:47:02 -070058
59 /* IO-APIC setup routine */
60 int (*setup_ioapic_entry)(int irq, struct IO_APIC_route_entry *,
61 unsigned int, int,
62 struct io_apic_irq_attr *);
Joerg Roedel4c1bad62012-03-30 11:47:03 -070063
64 /* Set the CPU affinity of a remapped interrupt */
65 int (*set_affinity)(struct irq_data *data, const struct cpumask *mask,
66 bool force);
Joerg Roedel9d619f62012-03-30 11:47:04 -070067
68 /* Free an IRQ */
69 int (*free_irq)(int);
Joerg Roedel5e2b9302012-03-30 11:47:05 -070070
71 /* Create MSI msg to use for interrupt remapping */
72 void (*compose_msi_msg)(struct pci_dev *,
73 unsigned int, unsigned int,
74 struct msi_msg *, u8);
75
76 /* Allocate remapping resources for MSI */
77 int (*msi_alloc_irq)(struct pci_dev *, int, int);
78
79 /* Setup the remapped MSI irq */
80 int (*msi_setup_irq)(struct pci_dev *, unsigned int, int, int);
81
82 /* Setup interrupt remapping for an HPET MSI */
Yijing Wang5fc24d82014-09-17 17:32:19 +080083 int (*alloc_hpet_msi)(unsigned int, unsigned int);
Joerg Roedel736baef2012-03-30 11:47:00 -070084};
85
86extern struct irq_remap_ops intel_irq_remap_ops;
Joerg Roedel6b474b82012-06-26 16:46:04 +020087extern struct irq_remap_ops amd_iommu_irq_ops;
Joerg Roedel736baef2012-03-30 11:47:00 -070088
Joerg Roedel05152a02012-06-15 16:53:51 +020089#else /* CONFIG_IRQ_REMAP */
90
91#define irq_remapping_enabled 0
92#define disable_irq_remap 1
Neil Horman03bbcb22013-04-16 16:38:32 -040093#define irq_remap_broken 0
Joerg Roedel05152a02012-06-15 16:53:51 +020094
Joerg Roedel736baef2012-03-30 11:47:00 -070095#endif /* CONFIG_IRQ_REMAP */
96
Suresh Siddha8a8f4222012-03-30 11:47:08 -070097#endif /* __IRQ_REMAPPING_H */