Commit | Line | Data |
---|---|---|
3de42dc0 XZ |
1 | /* |
2 | * irq_comm.c: Common 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/kvm_host.h> | |
23 | #include "irq.h" | |
24 | ||
25 | #include "ioapic.h" | |
26 | ||
27 | /* This should be called with the kvm->lock mutex held */ | |
28 | void kvm_set_irq(struct kvm *kvm, int irq, int level) | |
29 | { | |
30 | /* Not possible to detect if the guest uses the PIC or the | |
31 | * IOAPIC. So set the bit in both. The guest will ignore | |
32 | * writes to the unused one. | |
33 | */ | |
34 | kvm_ioapic_set_irq(kvm->arch.vioapic, irq, level); | |
35 | #ifdef CONFIG_X86 | |
36 | kvm_pic_set_irq(pic_irqchip(kvm), irq, level); | |
37 | #endif | |
38 | } | |
39 | ||
40 | void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi) | |
41 | { | |
42 | struct kvm_irq_ack_notifier *kian; | |
43 | struct hlist_node *n; | |
44 | ||
45 | hlist_for_each_entry(kian, n, &kvm->arch.irq_ack_notifier_list, link) | |
46 | if (kian->gsi == gsi) | |
47 | kian->irq_acked(kian); | |
48 | } | |
49 | ||
50 | void kvm_register_irq_ack_notifier(struct kvm *kvm, | |
51 | struct kvm_irq_ack_notifier *kian) | |
52 | { | |
53 | hlist_add_head(&kian->link, &kvm->arch.irq_ack_notifier_list); | |
54 | } | |
55 | ||
56 | void kvm_unregister_irq_ack_notifier(struct kvm *kvm, | |
57 | struct kvm_irq_ack_notifier *kian) | |
58 | { | |
59 | hlist_del(&kian->link); | |
60 | } |