You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
60 lines
1.8 KiB
60 lines
1.8 KiB
/*
|
|
* irq_comm.c: Common API for in kernel interrupt controller
|
|
* Copyright (c) 2007, Intel Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
|
|
* Place - Suite 330, Boston, MA 02111-1307 USA.
|
|
* Authors:
|
|
* Yaozu (Eddie) Dong <Eddie.dong@intel.com>
|
|
*
|
|
*/
|
|
|
|
#include <linux/kvm_host.h>
|
|
#include "irq.h"
|
|
|
|
#include "ioapic.h"
|
|
|
|
/* This should be called with the kvm->lock mutex held */
|
|
void kvm_set_irq(struct kvm *kvm, int irq, int level)
|
|
{
|
|
/* Not possible to detect if the guest uses the PIC or the
|
|
* IOAPIC. So set the bit in both. The guest will ignore
|
|
* writes to the unused one.
|
|
*/
|
|
kvm_ioapic_set_irq(kvm->arch.vioapic, irq, level);
|
|
#ifdef CONFIG_X86
|
|
kvm_pic_set_irq(pic_irqchip(kvm), irq, level);
|
|
#endif
|
|
}
|
|
|
|
void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi)
|
|
{
|
|
struct kvm_irq_ack_notifier *kian;
|
|
struct hlist_node *n;
|
|
|
|
hlist_for_each_entry(kian, n, &kvm->arch.irq_ack_notifier_list, link)
|
|
if (kian->gsi == gsi)
|
|
kian->irq_acked(kian);
|
|
}
|
|
|
|
void kvm_register_irq_ack_notifier(struct kvm *kvm,
|
|
struct kvm_irq_ack_notifier *kian)
|
|
{
|
|
hlist_add_head(&kian->link, &kvm->arch.irq_ack_notifier_list);
|
|
}
|
|
|
|
void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
|
|
struct kvm_irq_ack_notifier *kian)
|
|
{
|
|
hlist_del(&kian->link);
|
|
}
|
|
|