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62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
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/*
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* irq.c: API for in kernel interrupt controller
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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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#include <linux/module.h>
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#include "kvm.h"
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#include "irq.h"
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/*
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* check if there is pending interrupt without
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* intack.
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*/
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int kvm_cpu_has_interrupt(struct kvm_vcpu *v)
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{
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struct kvm_pic *s = pic_irqchip(v->kvm);
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if (s->output) /* PIC */
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return 1;
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/*
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* TODO: APIC
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*/
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return 0;
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}
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EXPORT_SYMBOL_GPL(kvm_cpu_has_interrupt);
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/*
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* Read pending interrupt vector and intack.
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*/
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int kvm_cpu_get_interrupt(struct kvm_vcpu *v)
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{
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struct kvm_pic *s = pic_irqchip(v->kvm);
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int vector;
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s->output = 0;
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vector = kvm_pic_read_irq(s);
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if (vector != -1)
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return vector;
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/*
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* TODO: APIC
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*/
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return -1;
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}
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EXPORT_SYMBOL_GPL(kvm_cpu_get_interrupt);
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