2 * irq.h: in kernel interrupt controller related definitions
3 * Copyright (c) 2007, Intel Corporation.
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.
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
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.
18 * Yaozu (Eddie) Dong <Eddie.dong@intel.com>
27 typedef void irq_request_func(void *opaque, int level);
30 struct kvm_kpic_state {
31 u8 last_irr; /* edge detection */
32 u8 irr; /* interrupt request register */
33 u8 imr; /* interrupt mask register */
34 u8 isr; /* interrupt service register */
35 u8 priority_add; /* highest irq priority */
42 u8 rotate_on_auto_eoi;
43 u8 special_fully_nested_mode;
44 u8 init4; /* true if 4 byte init */
45 u8 elcr; /* PIIX edge/trigger selection */
47 struct kvm_pic *pics_state;
51 struct kvm_kpic_state pics[2]; /* 0 is master pic, 1 is slave pic */
52 irq_request_func *irq_request;
53 void *irq_request_opaque;
54 int output; /* intr from master PIC */
55 struct kvm_io_device dev;
58 struct kvm_pic *kvm_create_pic(struct kvm *kvm);
59 void kvm_pic_set_irq(void *opaque, int irq, int level);
60 int kvm_pic_read_irq(struct kvm_pic *s);
61 int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
62 int kvm_cpu_has_interrupt(struct kvm_vcpu *v);