57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* KVM/MIPS: Interrupt delivery
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*
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* Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved.
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* Authors: Sanjay Lal <sanjayl@kymasys.com>
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*/
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#include <linux/errno.h>
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#include <linux/err.h>
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#include <linux/vmalloc.h>
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#include <linux/fs.h>
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#include <linux/memblock.h>
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#include <asm/page.h>
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#include <asm/cacheflush.h>
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#include <linux/kvm_host.h>
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#include "interrupt.h"
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void kvm_mips_deliver_interrupts(struct kvm_vcpu *vcpu, u32 cause)
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{
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unsigned long *pending = &vcpu->arch.pending_exceptions;
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unsigned long *pending_clr = &vcpu->arch.pending_exceptions_clr;
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unsigned int priority;
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if (!(*pending) && !(*pending_clr))
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return;
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priority = __ffs(*pending_clr);
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while (priority <= MIPS_EXC_MAX) {
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kvm_mips_callbacks->irq_clear(vcpu, priority, cause);
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priority = find_next_bit(pending_clr,
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BITS_PER_BYTE * sizeof(*pending_clr),
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priority + 1);
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}
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priority = __ffs(*pending);
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while (priority <= MIPS_EXC_MAX) {
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kvm_mips_callbacks->irq_deliver(vcpu, priority, cause);
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priority = find_next_bit(pending,
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BITS_PER_BYTE * sizeof(*pending),
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priority + 1);
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}
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}
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int kvm_mips_pending_timer(struct kvm_vcpu *vcpu)
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{
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return test_bit(MIPS_EXC_INT_TIMER, &vcpu->arch.pending_exceptions);
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}
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