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/*
* irq.c: 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>
*
* Ported to illumos by Joyent.
* Copyright 2011 Joyent, Inc. All rights reserved.
*/
/*
* XXX These header includes are really broken
*/
#include "msr.h"
#include "irqflags.h"
#include "kvm_host.h"
#include "kvm_x86host.h"
#include "kvm_iodev.h"
#include "kvm.h"
#include "irq.h"
#include "kvm_ioapic.h"
/* XXX This should never exist */
extern int irqchip_in_kernel(struct kvm *);
/*
* check if there are pending timer events
* to be processed.
*/
int
kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
{
int ret;
ret = pit_has_pending_timer(vcpu);
ret |= apic_has_pending_timer(vcpu);
return (ret);
}
void
kvm_inject_pending_timer_irqs(struct kvm_vcpu *vcpu)
{
kvm_inject_apic_timer_irqs(vcpu);
kvm_inject_pit_timer_irqs(vcpu);
/* TODO: PIT, RTC etc. */
}
void
kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id)
{
int i;
ASSERT(irq_source_id != KVM_USERSPACE_IRQ_SOURCE_ID);
mutex_enter(&kvm->irq_lock);
if (irq_source_id < 0 ||
irq_source_id >= BITS_PER_LONG) {
#ifdef XXX
printk(KERN_ERR "kvm: IRQ source ID out of range!\n");
#else
XXX_KVM_PROBE;
#endif
goto unlock;
}
clear_bit(irq_source_id, &kvm->arch.irq_sources_bitmap);
if (!irqchip_in_kernel(kvm))
goto unlock;
for (i = 0; i < KVM_IOAPIC_NUM_PINS; i++) {
clear_bit(irq_source_id, &kvm->arch.vioapic->irq_states[i]);
if (i >= 16)
continue;
#ifdef CONFIG_X86
clear_bit(irq_source_id, &pic_irqchip(kvm)->irq_states[i]);
#endif
}
unlock:
mutex_exit(&kvm->irq_lock);
}
void
__kvm_migrate_timers(struct kvm_vcpu *vcpu)
{
__kvm_migrate_apic_timer(vcpu);
__kvm_migrate_pit_timer(vcpu);
}
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