KVM: Move kvm_vcpu_kick() to x86.c
[linux-2.6.git] / arch / x86 / kvm / irq.c
1 /*
2  * irq.c: API for in kernel interrupt controller
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 #include <linux/module.h>
23 #include <linux/kvm_host.h>
24
25 #include "irq.h"
26
27 /*
28  * check if there is pending interrupt without
29  * intack.
30  */
31 int kvm_cpu_has_interrupt(struct kvm_vcpu *v)
32 {
33         struct kvm_pic *s;
34
35         if (kvm_apic_has_interrupt(v) == -1) {  /* LAPIC */
36                 if (kvm_apic_accept_pic_intr(v)) {
37                         s = pic_irqchip(v->kvm);        /* PIC */
38                         return s->output;
39                 } else
40                         return 0;
41         }
42         return 1;
43 }
44 EXPORT_SYMBOL_GPL(kvm_cpu_has_interrupt);
45
46 /*
47  * Read pending interrupt vector and intack.
48  */
49 int kvm_cpu_get_interrupt(struct kvm_vcpu *v)
50 {
51         struct kvm_pic *s;
52         int vector;
53
54         vector = kvm_get_apic_interrupt(v);     /* APIC */
55         if (vector == -1) {
56                 if (kvm_apic_accept_pic_intr(v)) {
57                         s = pic_irqchip(v->kvm);
58                         s->output = 0;          /* PIC */
59                         vector = kvm_pic_read_irq(s);
60                 }
61         }
62         return vector;
63 }
64 EXPORT_SYMBOL_GPL(kvm_cpu_get_interrupt);
65
66 void kvm_inject_pending_timer_irqs(struct kvm_vcpu *vcpu)
67 {
68         kvm_inject_apic_timer_irqs(vcpu);
69         /* TODO: PIT, RTC etc. */
70 }
71 EXPORT_SYMBOL_GPL(kvm_inject_pending_timer_irqs);
72
73 void kvm_timer_intr_post(struct kvm_vcpu *vcpu, int vec)
74 {
75         kvm_apic_timer_intr_post(vcpu, vec);
76         /* TODO: PIT, RTC etc. */
77 }
78 EXPORT_SYMBOL_GPL(kvm_timer_intr_post);