Commit | Line | Data |
---|---|---|
736baef4 JR |
1 | #include <linux/kernel.h> |
2 | #include <linux/string.h> | |
3 | #include <linux/errno.h> | |
4 | ||
8a8f422d | 5 | #include "irq_remapping.h" |
736baef4 | 6 | |
95a02e97 | 7 | int irq_remapping_enabled; |
736baef4 | 8 | |
95a02e97 | 9 | int disable_irq_remap; |
736baef4 JR |
10 | int disable_sourceid_checking; |
11 | int no_x2apic_optout; | |
12 | ||
13 | static struct irq_remap_ops *remap_ops; | |
14 | ||
15 | static __init int setup_nointremap(char *str) | |
16 | { | |
95a02e97 | 17 | disable_irq_remap = 1; |
736baef4 JR |
18 | return 0; |
19 | } | |
20 | early_param("nointremap", setup_nointremap); | |
21 | ||
95a02e97 | 22 | static __init int setup_irqremap(char *str) |
736baef4 JR |
23 | { |
24 | if (!str) | |
25 | return -EINVAL; | |
26 | ||
27 | while (*str) { | |
28 | if (!strncmp(str, "on", 2)) | |
95a02e97 | 29 | disable_irq_remap = 0; |
736baef4 | 30 | else if (!strncmp(str, "off", 3)) |
95a02e97 | 31 | disable_irq_remap = 1; |
736baef4 JR |
32 | else if (!strncmp(str, "nosid", 5)) |
33 | disable_sourceid_checking = 1; | |
34 | else if (!strncmp(str, "no_x2apic_optout", 16)) | |
35 | no_x2apic_optout = 1; | |
36 | ||
37 | str += strcspn(str, ","); | |
38 | while (*str == ',') | |
39 | str++; | |
40 | } | |
41 | ||
42 | return 0; | |
43 | } | |
95a02e97 | 44 | early_param("intremap", setup_irqremap); |
736baef4 | 45 | |
95a02e97 | 46 | void __init setup_irq_remapping_ops(void) |
736baef4 JR |
47 | { |
48 | remap_ops = &intel_irq_remap_ops; | |
49 | } | |
50 | ||
95a02e97 | 51 | int irq_remapping_supported(void) |
736baef4 | 52 | { |
95a02e97 | 53 | if (disable_irq_remap) |
736baef4 JR |
54 | return 0; |
55 | ||
56 | if (!remap_ops || !remap_ops->supported) | |
57 | return 0; | |
58 | ||
59 | return remap_ops->supported(); | |
60 | } | |
61 | ||
95a02e97 | 62 | int __init irq_remapping_prepare(void) |
736baef4 | 63 | { |
95a02e97 | 64 | if (!remap_ops || !remap_ops->prepare) |
736baef4 JR |
65 | return -ENODEV; |
66 | ||
95a02e97 | 67 | return remap_ops->prepare(); |
736baef4 JR |
68 | } |
69 | ||
95a02e97 | 70 | int __init irq_remapping_enable(void) |
736baef4 | 71 | { |
95a02e97 | 72 | if (!remap_ops || !remap_ops->enable) |
736baef4 JR |
73 | return -ENODEV; |
74 | ||
95a02e97 | 75 | return remap_ops->enable(); |
736baef4 | 76 | } |
4f3d8b67 | 77 | |
95a02e97 | 78 | void irq_remapping_disable(void) |
4f3d8b67 | 79 | { |
95a02e97 | 80 | if (!remap_ops || !remap_ops->disable) |
4f3d8b67 JR |
81 | return; |
82 | ||
95a02e97 | 83 | remap_ops->disable(); |
4f3d8b67 JR |
84 | } |
85 | ||
95a02e97 | 86 | int irq_remapping_reenable(int mode) |
4f3d8b67 | 87 | { |
95a02e97 | 88 | if (!remap_ops || !remap_ops->reenable) |
4f3d8b67 JR |
89 | return 0; |
90 | ||
95a02e97 | 91 | return remap_ops->reenable(mode); |
4f3d8b67 JR |
92 | } |
93 | ||
95a02e97 | 94 | int __init irq_remap_enable_fault_handling(void) |
4f3d8b67 JR |
95 | { |
96 | if (!remap_ops || !remap_ops->enable_faulting) | |
97 | return -ENODEV; | |
98 | ||
99 | return remap_ops->enable_faulting(); | |
100 | } | |
0c3f173a | 101 | |
95a02e97 SS |
102 | int setup_ioapic_remapped_entry(int irq, |
103 | struct IO_APIC_route_entry *entry, | |
104 | unsigned int destination, int vector, | |
105 | struct io_apic_irq_attr *attr) | |
0c3f173a JR |
106 | { |
107 | if (!remap_ops || !remap_ops->setup_ioapic_entry) | |
108 | return -ENODEV; | |
109 | ||
110 | return remap_ops->setup_ioapic_entry(irq, entry, destination, | |
111 | vector, attr); | |
112 | } | |
4c1bad6a | 113 | |
82b481e8 | 114 | #ifdef CONFIG_SMP |
95a02e97 SS |
115 | int set_remapped_irq_affinity(struct irq_data *data, const struct cpumask *mask, |
116 | bool force) | |
4c1bad6a JR |
117 | { |
118 | if (!remap_ops || !remap_ops->set_affinity) | |
119 | return 0; | |
120 | ||
121 | return remap_ops->set_affinity(data, mask, force); | |
122 | } | |
82b481e8 | 123 | #endif |
9d619f65 | 124 | |
95a02e97 | 125 | void free_remapped_irq(int irq) |
9d619f65 JR |
126 | { |
127 | if (!remap_ops || !remap_ops->free_irq) | |
128 | return; | |
129 | ||
130 | remap_ops->free_irq(irq); | |
131 | } | |
5e2b930b | 132 | |
95a02e97 SS |
133 | void compose_remapped_msi_msg(struct pci_dev *pdev, |
134 | unsigned int irq, unsigned int dest, | |
135 | struct msi_msg *msg, u8 hpet_id) | |
5e2b930b JR |
136 | { |
137 | if (!remap_ops || !remap_ops->compose_msi_msg) | |
138 | return; | |
139 | ||
140 | remap_ops->compose_msi_msg(pdev, irq, dest, msg, hpet_id); | |
141 | } | |
142 | ||
95a02e97 | 143 | int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec) |
5e2b930b JR |
144 | { |
145 | if (!remap_ops || !remap_ops->msi_alloc_irq) | |
146 | return -ENODEV; | |
147 | ||
148 | return remap_ops->msi_alloc_irq(pdev, irq, nvec); | |
149 | } | |
150 | ||
95a02e97 SS |
151 | int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq, |
152 | int index, int sub_handle) | |
5e2b930b JR |
153 | { |
154 | if (!remap_ops || !remap_ops->msi_setup_irq) | |
155 | return -ENODEV; | |
156 | ||
157 | return remap_ops->msi_setup_irq(pdev, irq, index, sub_handle); | |
158 | } | |
159 | ||
95a02e97 | 160 | int setup_hpet_msi_remapped(unsigned int irq, unsigned int id) |
5e2b930b JR |
161 | { |
162 | if (!remap_ops || !remap_ops->setup_hpet_msi) | |
163 | return -ENODEV; | |
164 | ||
165 | return remap_ops->setup_hpet_msi(irq, id); | |
166 | } |