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85f455f7 ED |
1 | /* |
2 | * irq.h: in kernel interrupt controller related definitions | |
3 | * Copyright (c) 2007, Intel Corporation. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple | |
16 | * Place - Suite 330, Boston, MA 02111-1307 USA. | |
17 | * Authors: | |
18 | * Yaozu (Eddie) Dong <Eddie.dong@intel.com> | |
19 | * | |
20 | */ | |
21 | ||
22 | #ifndef __IRQ_H | |
23 | #define __IRQ_H | |
24 | ||
e01a1b57 HB |
25 | #include <linux/mm_types.h> |
26 | #include <linux/hrtimer.h> | |
edf88417 | 27 | #include <linux/kvm_host.h> |
3f353858 | 28 | #include <linux/spinlock.h> |
82470196 | 29 | |
e2174021 | 30 | #include "iodev.h" |
82470196 ZX |
31 | #include "ioapic.h" |
32 | #include "lapic.h" | |
85f455f7 | 33 | |
c65bbfa1 BAY |
34 | #define PIC_NUM_PINS 16 |
35 | ||
e01a1b57 HB |
36 | struct kvm; |
37 | struct kvm_vcpu; | |
38 | ||
85f455f7 ED |
39 | typedef void irq_request_func(void *opaque, int level); |
40 | ||
85f455f7 ED |
41 | struct kvm_kpic_state { |
42 | u8 last_irr; /* edge detection */ | |
43 | u8 irr; /* interrupt request register */ | |
44 | u8 imr; /* interrupt mask register */ | |
45 | u8 isr; /* interrupt service register */ | |
e4825800 | 46 | u8 isr_ack; /* interrupt ack detection */ |
85f455f7 ED |
47 | u8 priority_add; /* highest irq priority */ |
48 | u8 irq_base; | |
49 | u8 read_reg_select; | |
50 | u8 poll; | |
51 | u8 special_mask; | |
52 | u8 init_state; | |
53 | u8 auto_eoi; | |
54 | u8 rotate_on_auto_eoi; | |
55 | u8 special_fully_nested_mode; | |
56 | u8 init4; /* true if 4 byte init */ | |
57 | u8 elcr; /* PIIX edge/trigger selection */ | |
58 | u8 elcr_mask; | |
59 | struct kvm_pic *pics_state; | |
60 | }; | |
61 | ||
62 | struct kvm_pic { | |
3f353858 AK |
63 | spinlock_t lock; |
64 | bool wakeup_needed; | |
65 | unsigned pending_acks; | |
66 | struct kvm *kvm; | |
85f455f7 ED |
67 | struct kvm_kpic_state pics[2]; /* 0 is master pic, 1 is slave pic */ |
68 | irq_request_func *irq_request; | |
69 | void *irq_request_opaque; | |
70 | int output; /* intr from master PIC */ | |
71 | struct kvm_io_device dev; | |
f5244726 | 72 | void (*ack_notifier)(void *opaque, int irq); |
85f455f7 ED |
73 | }; |
74 | ||
75 | struct kvm_pic *kvm_create_pic(struct kvm *kvm); | |
f5244726 | 76 | int kvm_pic_read_irq(struct kvm *kvm); |
6ceb9d79 | 77 | void kvm_pic_update_irq(struct kvm_pic *s); |
e4825800 | 78 | void kvm_pic_clear_isr_ack(struct kvm *kvm); |
85f455f7 | 79 | |
682c59a3 ZX |
80 | static inline struct kvm_pic *pic_irqchip(struct kvm *kvm) |
81 | { | |
d7deeeb0 | 82 | return kvm->arch.vpic; |
682c59a3 ZX |
83 | } |
84 | ||
682c59a3 ZX |
85 | static inline int irqchip_in_kernel(struct kvm *kvm) |
86 | { | |
87 | return pic_irqchip(kvm) != NULL; | |
88 | } | |
89 | ||
2fcceae1 | 90 | void kvm_pic_reset(struct kvm_kpic_state *s); |
8be5453f | 91 | |
1b9778da ED |
92 | void kvm_inject_pending_timer_irqs(struct kvm_vcpu *vcpu); |
93 | void kvm_inject_apic_timer_irqs(struct kvm_vcpu *vcpu); | |
8fdb2351 | 94 | void kvm_apic_nmi_wd_deliver(struct kvm_vcpu *vcpu); |
2f52d58c | 95 | void __kvm_migrate_apic_timer(struct kvm_vcpu *vcpu); |
2f599714 MT |
96 | void __kvm_migrate_pit_timer(struct kvm_vcpu *vcpu); |
97 | void __kvm_migrate_timers(struct kvm_vcpu *vcpu); | |
97222cc8 | 98 | |
3d80840d MT |
99 | int pit_has_pending_timer(struct kvm_vcpu *vcpu); |
100 | int apic_has_pending_timer(struct kvm_vcpu *vcpu); | |
101 | ||
85f455f7 | 102 | #endif |