Commit | Line | Data |
---|---|---|
736baef4 JR |
1 | #include <linux/kernel.h> |
2 | #include <linux/string.h> | |
98f1ad25 | 3 | #include <linux/cpumask.h> |
736baef4 | 4 | #include <linux/errno.h> |
98f1ad25 JR |
5 | #include <linux/msi.h> |
6 | ||
7 | #include <asm/hw_irq.h> | |
8 | #include <asm/irq_remapping.h> | |
736baef4 | 9 | |
8a8f422d | 10 | #include "irq_remapping.h" |
736baef4 | 11 | |
95a02e97 | 12 | int irq_remapping_enabled; |
736baef4 | 13 | |
95a02e97 | 14 | int disable_irq_remap; |
736baef4 JR |
15 | int disable_sourceid_checking; |
16 | int no_x2apic_optout; | |
17 | ||
18 | static struct irq_remap_ops *remap_ops; | |
19 | ||
20 | static __init int setup_nointremap(char *str) | |
21 | { | |
95a02e97 | 22 | disable_irq_remap = 1; |
736baef4 JR |
23 | return 0; |
24 | } | |
25 | early_param("nointremap", setup_nointremap); | |
26 | ||
95a02e97 | 27 | static __init int setup_irqremap(char *str) |
736baef4 JR |
28 | { |
29 | if (!str) | |
30 | return -EINVAL; | |
31 | ||
32 | while (*str) { | |
33 | if (!strncmp(str, "on", 2)) | |
95a02e97 | 34 | disable_irq_remap = 0; |
736baef4 | 35 | else if (!strncmp(str, "off", 3)) |
95a02e97 | 36 | disable_irq_remap = 1; |
736baef4 JR |
37 | else if (!strncmp(str, "nosid", 5)) |
38 | disable_sourceid_checking = 1; | |
39 | else if (!strncmp(str, "no_x2apic_optout", 16)) | |
40 | no_x2apic_optout = 1; | |
41 | ||
42 | str += strcspn(str, ","); | |
43 | while (*str == ',') | |
44 | str++; | |
45 | } | |
46 | ||
47 | return 0; | |
48 | } | |
95a02e97 | 49 | early_param("intremap", setup_irqremap); |
736baef4 | 50 | |
95a02e97 | 51 | void __init setup_irq_remapping_ops(void) |
736baef4 JR |
52 | { |
53 | remap_ops = &intel_irq_remap_ops; | |
54 | } | |
55 | ||
95a02e97 | 56 | int irq_remapping_supported(void) |
736baef4 | 57 | { |
95a02e97 | 58 | if (disable_irq_remap) |
736baef4 JR |
59 | return 0; |
60 | ||
61 | if (!remap_ops || !remap_ops->supported) | |
62 | return 0; | |
63 | ||
64 | return remap_ops->supported(); | |
65 | } | |
66 | ||
95a02e97 | 67 | int __init irq_remapping_prepare(void) |
736baef4 | 68 | { |
95a02e97 | 69 | if (!remap_ops || !remap_ops->prepare) |
736baef4 JR |
70 | return -ENODEV; |
71 | ||
95a02e97 | 72 | return remap_ops->prepare(); |
736baef4 JR |
73 | } |
74 | ||
95a02e97 | 75 | int __init irq_remapping_enable(void) |
736baef4 | 76 | { |
95a02e97 | 77 | if (!remap_ops || !remap_ops->enable) |
736baef4 JR |
78 | return -ENODEV; |
79 | ||
95a02e97 | 80 | return remap_ops->enable(); |
736baef4 | 81 | } |
4f3d8b67 | 82 | |
95a02e97 | 83 | void irq_remapping_disable(void) |
4f3d8b67 | 84 | { |
95a02e97 | 85 | if (!remap_ops || !remap_ops->disable) |
4f3d8b67 JR |
86 | return; |
87 | ||
95a02e97 | 88 | remap_ops->disable(); |
4f3d8b67 JR |
89 | } |
90 | ||
95a02e97 | 91 | int irq_remapping_reenable(int mode) |
4f3d8b67 | 92 | { |
95a02e97 | 93 | if (!remap_ops || !remap_ops->reenable) |
4f3d8b67 JR |
94 | return 0; |
95 | ||
95a02e97 | 96 | return remap_ops->reenable(mode); |
4f3d8b67 JR |
97 | } |
98 | ||
95a02e97 | 99 | int __init irq_remap_enable_fault_handling(void) |
4f3d8b67 JR |
100 | { |
101 | if (!remap_ops || !remap_ops->enable_faulting) | |
102 | return -ENODEV; | |
103 | ||
104 | return remap_ops->enable_faulting(); | |
105 | } | |
0c3f173a | 106 | |
95a02e97 SS |
107 | int setup_ioapic_remapped_entry(int irq, |
108 | struct IO_APIC_route_entry *entry, | |
109 | unsigned int destination, int vector, | |
110 | struct io_apic_irq_attr *attr) | |
0c3f173a JR |
111 | { |
112 | if (!remap_ops || !remap_ops->setup_ioapic_entry) | |
113 | return -ENODEV; | |
114 | ||
115 | return remap_ops->setup_ioapic_entry(irq, entry, destination, | |
116 | vector, attr); | |
117 | } | |
4c1bad6a | 118 | |
95a02e97 SS |
119 | int set_remapped_irq_affinity(struct irq_data *data, const struct cpumask *mask, |
120 | bool force) | |
4c1bad6a | 121 | { |
7eb9ae07 SS |
122 | if (!config_enabled(CONFIG_SMP) || !remap_ops || |
123 | !remap_ops->set_affinity) | |
4c1bad6a JR |
124 | return 0; |
125 | ||
126 | return remap_ops->set_affinity(data, mask, force); | |
127 | } | |
9d619f65 | 128 | |
95a02e97 | 129 | void free_remapped_irq(int irq) |
9d619f65 JR |
130 | { |
131 | if (!remap_ops || !remap_ops->free_irq) | |
132 | return; | |
133 | ||
134 | remap_ops->free_irq(irq); | |
135 | } | |
5e2b930b | 136 | |
95a02e97 SS |
137 | void compose_remapped_msi_msg(struct pci_dev *pdev, |
138 | unsigned int irq, unsigned int dest, | |
139 | struct msi_msg *msg, u8 hpet_id) | |
5e2b930b JR |
140 | { |
141 | if (!remap_ops || !remap_ops->compose_msi_msg) | |
142 | return; | |
143 | ||
144 | remap_ops->compose_msi_msg(pdev, irq, dest, msg, hpet_id); | |
145 | } | |
146 | ||
95a02e97 | 147 | int msi_alloc_remapped_irq(struct pci_dev *pdev, int irq, int nvec) |
5e2b930b JR |
148 | { |
149 | if (!remap_ops || !remap_ops->msi_alloc_irq) | |
150 | return -ENODEV; | |
151 | ||
152 | return remap_ops->msi_alloc_irq(pdev, irq, nvec); | |
153 | } | |
154 | ||
95a02e97 SS |
155 | int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq, |
156 | int index, int sub_handle) | |
5e2b930b JR |
157 | { |
158 | if (!remap_ops || !remap_ops->msi_setup_irq) | |
159 | return -ENODEV; | |
160 | ||
161 | return remap_ops->msi_setup_irq(pdev, irq, index, sub_handle); | |
162 | } | |
163 | ||
95a02e97 | 164 | int setup_hpet_msi_remapped(unsigned int irq, unsigned int id) |
5e2b930b JR |
165 | { |
166 | if (!remap_ops || !remap_ops->setup_hpet_msi) | |
167 | return -ENODEV; | |
168 | ||
169 | return remap_ops->setup_hpet_msi(irq, id); | |
170 | } |