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authorXiantao Zhang <xiantao.zhang@intel.com>2008-10-06 01:48:45 -0400
committerAvi Kivity <avi@redhat.com>2008-10-15 08:25:35 -0400
commit3de42dc094ecd313dc7d551e007a134b52f8663d (patch)
treecba836b4cd719e6a98f640fecec41ce5d23d9ce7 /virt
parentc77fb9dc7a0383c86eabef30272a763a482403e1 (diff)
KVM: Separate irq ack notification out of arch/x86/kvm/irq.c
Moving irq ack notification logic as common, and make it shared with ia64 side. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/irq_comm.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c
new file mode 100644
index 000000000000..d0169f5e6047
--- /dev/null
+++ b/virt/kvm/irq_comm.c
@@ -0,0 +1,60 @@
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 */
28void 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
40void 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
50void 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
56void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
57 struct kvm_irq_ack_notifier *kian)
58{
59 hlist_del(&kian->link);
60}