65 lines
1.9 KiB
C
65 lines
1.9 KiB
C
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/*
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* irq.h: in kernel interrupt controller related definitions
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* Copyright (c) 2007, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place - Suite 330, Boston, MA 02111-1307 USA.
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* Authors:
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* Yaozu (Eddie) Dong <Eddie.dong@intel.com>
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*
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*/
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#ifndef __IRQ_H
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#define __IRQ_H
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#include "kvm.h"
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typedef void irq_request_func(void *opaque, int level);
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struct kvm_pic;
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struct kvm_kpic_state {
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u8 last_irr; /* edge detection */
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u8 irr; /* interrupt request register */
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u8 imr; /* interrupt mask register */
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u8 isr; /* interrupt service register */
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u8 priority_add; /* highest irq priority */
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u8 irq_base;
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u8 read_reg_select;
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u8 poll;
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u8 special_mask;
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u8 init_state;
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u8 auto_eoi;
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u8 rotate_on_auto_eoi;
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u8 special_fully_nested_mode;
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u8 init4; /* true if 4 byte init */
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u8 elcr; /* PIIX edge/trigger selection */
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u8 elcr_mask;
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struct kvm_pic *pics_state;
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};
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struct kvm_pic {
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struct kvm_kpic_state pics[2]; /* 0 is master pic, 1 is slave pic */
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irq_request_func *irq_request;
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void *irq_request_opaque;
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int output; /* intr from master PIC */
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struct kvm_io_device dev;
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};
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struct kvm_pic *kvm_create_pic(struct kvm *kvm);
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void kvm_pic_set_irq(void *opaque, int irq, int level);
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int kvm_pic_read_irq(struct kvm_pic *s);
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int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
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int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
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#endif
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