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Commit 64a959d6 authored by Christoffer Dall's avatar Christoffer Dall
Browse files

KVM: arm/arm64: vgic-new: Add acccessor to new struct vgic_irq instance 



The new VGIC implementation centers around a struct vgic_irq instance
per virtual IRQ.
Provide a function to retrieve the right instance for a given IRQ
number and (in case of private interrupts) the right VCPU.

Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: default avatarAndre Przywara <andre.przywara@arm.com>
Reviewed-by: default avatarEric Auger <eric.auger@linaro.org>
Acked-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
parent b18b5778

virt/kvm/arm/vgic/vgic.c

0 → 100644
+41 −0
Original line number Diff line number Diff line 
/*

 * 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;

}

virt/kvm/arm/vgic/vgic.h

0 → 100644
+22 −0
Original line number Diff line number Diff line 
/*

 * 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/>.

 */

#ifndef __KVM_ARM_VGIC_NEW_H__

#define __KVM_ARM_VGIC_NEW_H__



struct vgic_irq *vgic_get_irq(struct kvm *kvm, struct kvm_vcpu *vcpu,

			      u32 intid);



#endif