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736baef4 JR |
1 | /* |
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 | ||
8a8f422d SS |
22 | #ifndef __IRQ_REMAPPING_H |
23 | #define __IRQ_REMAPPING_H | |
736baef4 JR |
24 | |
25 | #ifdef CONFIG_IRQ_REMAP | |
26 | ||
0c3f173a JR |
27 | struct IO_APIC_route_entry; |
28 | struct io_apic_irq_attr; | |
4c1bad6a JR |
29 | struct irq_data; |
30 | struct cpumask; | |
5e2b930b JR |
31 | struct pci_dev; |
32 | struct msi_msg; | |
0c3f173a | 33 | |
95a02e97 | 34 | extern int disable_irq_remap; |
736baef4 JR |
35 | extern int disable_sourceid_checking; |
36 | extern int no_x2apic_optout; | |
078e1ee2 | 37 | extern int irq_remapping_enabled; |
736baef4 JR |
38 | |
39 | struct irq_remap_ops { | |
40 | /* Check whether Interrupt Remapping is supported */ | |
41 | int (*supported)(void); | |
42 | ||
43 | /* Initializes hardware and makes it ready for remapping interrupts */ | |
95a02e97 | 44 | int (*prepare)(void); |
736baef4 JR |
45 | |
46 | /* Enables the remapping hardware */ | |
95a02e97 | 47 | int (*enable)(void); |
4f3d8b67 JR |
48 | |
49 | /* Disables the remapping hardware */ | |
95a02e97 | 50 | void (*disable)(void); |
4f3d8b67 JR |
51 | |
52 | /* Reenables the remapping hardware */ | |
95a02e97 | 53 | int (*reenable)(int); |
4f3d8b67 JR |
54 | |
55 | /* Enable fault handling */ | |
56 | int (*enable_faulting)(void); | |
0c3f173a JR |
57 | |
58 | /* IO-APIC setup routine */ | |
59 | int (*setup_ioapic_entry)(int irq, struct IO_APIC_route_entry *, | |
60 | unsigned int, int, | |
61 | struct io_apic_irq_attr *); | |
4c1bad6a JR |
62 | |
63 | /* Set the CPU affinity of a remapped interrupt */ | |
64 | int (*set_affinity)(struct irq_data *data, const struct cpumask *mask, | |
65 | bool force); | |
9d619f65 JR |
66 | |
67 | /* Free an IRQ */ | |
68 | int (*free_irq)(int); | |
5e2b930b JR |
69 | |
70 | /* Create MSI msg to use for interrupt remapping */ | |
71 | void (*compose_msi_msg)(struct pci_dev *, | |
72 | unsigned int, unsigned int, | |
73 | struct msi_msg *, u8); | |
74 | ||
75 | /* Allocate remapping resources for MSI */ | |
76 | int (*msi_alloc_irq)(struct pci_dev *, int, int); | |
77 | ||
78 | /* Setup the remapped MSI irq */ | |
79 | int (*msi_setup_irq)(struct pci_dev *, unsigned int, int, int); | |
80 | ||
81 | /* Setup interrupt remapping for an HPET MSI */ | |
82 | int (*setup_hpet_msi)(unsigned int, unsigned int); | |
736baef4 JR |
83 | }; |
84 | ||
85 | extern struct irq_remap_ops intel_irq_remap_ops; | |
6b474b82 | 86 | extern struct irq_remap_ops amd_iommu_irq_ops; |
736baef4 | 87 | |
05152a04 JR |
88 | #else /* CONFIG_IRQ_REMAP */ |
89 | ||
90 | #define irq_remapping_enabled 0 | |
91 | #define disable_irq_remap 1 | |
92 | ||
736baef4 JR |
93 | #endif /* CONFIG_IRQ_REMAP */ |
94 | ||
8a8f422d | 95 | #endif /* __IRQ_REMAPPING_H */ |