blob: 1802134b836fc352529f59e6fd7b82b81ef28e95 [file] [log] [blame]
Eddie Dong85f455f2007-07-06 12:20:49 +03001/*
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
Hollis Blancharde01a1b52007-12-03 15:30:25 -060025#include <linux/mm_types.h>
26#include <linux/hrtimer.h>
Avi Kivityedf88412007-12-16 11:02:48 +020027#include <linux/kvm_host.h>
Zhang Xiantao82470192007-12-17 13:59:56 +080028
Hollis Blancharde2174022007-12-03 15:30:24 -060029#include "iodev.h"
Zhang Xiantao82470192007-12-17 13:59:56 +080030#include "ioapic.h"
31#include "lapic.h"
Eddie Dong85f455f2007-07-06 12:20:49 +030032
Hollis Blancharde01a1b52007-12-03 15:30:25 -060033struct kvm;
34struct kvm_vcpu;
35
Eddie Dong85f455f2007-07-06 12:20:49 +030036typedef void irq_request_func(void *opaque, int level);
37
Eddie Dong85f455f2007-07-06 12:20:49 +030038struct kvm_kpic_state {
39 u8 last_irr; /* edge detection */
40 u8 irr; /* interrupt request register */
41 u8 imr; /* interrupt mask register */
42 u8 isr; /* interrupt service register */
43 u8 priority_add; /* highest irq priority */
44 u8 irq_base;
45 u8 read_reg_select;
46 u8 poll;
47 u8 special_mask;
48 u8 init_state;
49 u8 auto_eoi;
50 u8 rotate_on_auto_eoi;
51 u8 special_fully_nested_mode;
52 u8 init4; /* true if 4 byte init */
53 u8 elcr; /* PIIX edge/trigger selection */
54 u8 elcr_mask;
55 struct kvm_pic *pics_state;
56};
57
58struct kvm_pic {
59 struct kvm_kpic_state pics[2]; /* 0 is master pic, 1 is slave pic */
60 irq_request_func *irq_request;
61 void *irq_request_opaque;
62 int output; /* intr from master PIC */
63 struct kvm_io_device dev;
64};
65
66struct kvm_pic *kvm_create_pic(struct kvm *kvm);
67void kvm_pic_set_irq(void *opaque, int irq, int level);
68int kvm_pic_read_irq(struct kvm_pic *s);
He, Qing6ceb9d72007-07-26 11:05:18 +030069void kvm_pic_update_irq(struct kvm_pic *s);
Eddie Dong85f455f2007-07-06 12:20:49 +030070
Zhang Xiantao682c59a2007-12-11 20:36:00 +080071static inline struct kvm_pic *pic_irqchip(struct kvm *kvm)
72{
Zhang Xiantaod7deeeb02007-12-14 10:17:34 +080073 return kvm->arch.vpic;
Zhang Xiantao682c59a2007-12-11 20:36:00 +080074}
75
Zhang Xiantao682c59a2007-12-11 20:36:00 +080076static inline int irqchip_in_kernel(struct kvm *kvm)
77{
78 return pic_irqchip(kvm) != NULL;
79}
80
Eddie Dong2fcceae2007-10-10 12:14:25 +020081void kvm_pic_reset(struct kvm_kpic_state *s);
Zhang Xiantao8be54532007-12-02 22:35:57 +080082
Eddie Dong1b9778d2007-09-03 16:56:58 +030083void kvm_timer_intr_post(struct kvm_vcpu *vcpu, int vec);
84void kvm_inject_pending_timer_irqs(struct kvm_vcpu *vcpu);
85void kvm_inject_apic_timer_irqs(struct kvm_vcpu *vcpu);
Avi Kivity2f52d582008-01-16 12:49:30 +020086void __kvm_migrate_apic_timer(struct kvm_vcpu *vcpu);
Eddie Dong97222cc2007-09-12 10:58:04 +030087
Marcelo Tosatti3d808402008-04-11 14:53:26 -030088int pit_has_pending_timer(struct kvm_vcpu *vcpu);
89int apic_has_pending_timer(struct kvm_vcpu *vcpu);
90
Eddie Dong85f455f2007-07-06 12:20:49 +030091#endif