virt/kvm/arm/vgic/vgic.c

/*
 * Copyright (C) 2015, 2016 ARM Ltd.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that 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, see <http://www.gnu.org/licenses/>.
 */

#include <linux/kvm.h>
#include <linux/kvm_host.h>

#include "vgic.h"

struct vgic_global __section(.hyp.text) kvm_vgic_global_state;

struct vgic_irq *vgic_get_irq(struct kvm *kvm, struct kvm_vcpu *vcpu,
			      u32 intid)
{
	/* SGIs and PPIs */
	if (intid <= VGIC_MAX_PRIVATE)
		return &vcpu->arch.vgic_cpu.private_irqs[intid];

	/* SPIs */
	if (intid <= VGIC_MAX_SPI)
		return &kvm->arch.vgic.spis[intid - VGIC_NR_PRIVATE_IRQS];

	/* LPIs are not yet covered */
	if (intid >= VGIC_MIN_LPI)
		return NULL;

	WARN(1, "Looking up struct vgic_irq for reserved INTID");
	return NULL;
}