interrupt.c

 1/*
 2 * This file is subject to the terms and conditions of the GNU General Public
 3 * License.  See the file "COPYING" in the main directory of this archive
 4 * for more details.
 5 *
 6 * KVM/MIPS: Interrupt delivery
 7 *
 8 * Copyright (C) 2012  MIPS Technologies, Inc.  All rights reserved.
 9 * Authors: Sanjay Lal <sanjayl@kymasys.com>
10 */
11
12#include <linux/errno.h>
13#include <linux/err.h>
14#include <linux/vmalloc.h>
15#include <linux/fs.h>
16#include <linux/memblock.h>
17#include <asm/page.h>
18#include <asm/cacheflush.h>
19
20#include <linux/kvm_host.h>
21
22#include "interrupt.h"
23
24void kvm_mips_deliver_interrupts(struct kvm_vcpu *vcpu, u32 cause)
25{
26	unsigned long *pending = &vcpu->arch.pending_exceptions;
27	unsigned long *pending_clr = &vcpu->arch.pending_exceptions_clr;
28	unsigned int priority;
29
30	for_each_set_bit(priority, pending_clr, MIPS_EXC_MAX + 1)
31		kvm_mips_callbacks->irq_clear(vcpu, priority, cause);
32
33	for_each_set_bit(priority, pending, MIPS_EXC_MAX + 1)
34		kvm_mips_callbacks->irq_deliver(vcpu, priority, cause);
35}
36
37int kvm_mips_pending_timer(struct kvm_vcpu *vcpu)
38{
39	return test_bit(MIPS_EXC_INT_TIMER, &vcpu->arch.pending_exceptions);
40}