Commit c86c7721 authored by Eric Auger's avatar Eric Auger Committed by Christoffer Dall
Browse files

KVM: arm/arm64: vgic-new: vgic_kvm_device: KVM device ops registration 



This patch introduces the skeleton for the KVM device operations
associated to KVM_DEV_TYPE_ARM_VGIC_V2 and KVM_DEV_TYPE_ARM_VGIC_V3.

At that stage kvm_vgic_create is stubbed.

Signed-off-by: default avatarEric Auger <eric.auger@linaro.org>
Signed-off-by: default avatarAndre Przywara <andre.przywara@arm.com>
Reviewed-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
parent 621ecd8d

virt/kvm/arm/vgic/vgic-kvm-device.c

0 → 100644
+108 −0
Original line number Diff line number Diff line 
/*

 * VGIC: KVM DEVICE API

 *

 * Copyright (C) 2015 ARM Ltd.

 * Author: Marc Zyngier <marc.zyngier@arm.com>

 *

 * 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.

 */

#include <linux/kvm_host.h>

#include <kvm/arm_vgic.h>



/* common helpers */



static int vgic_create(struct kvm_device *dev, u32 type)

{

	return kvm_vgic_create(dev->kvm, type);

}



static void vgic_destroy(struct kvm_device *dev)

{

	kfree(dev);

}



void kvm_register_vgic_device(unsigned long type)

{

	switch (type) {

	case KVM_DEV_TYPE_ARM_VGIC_V2:

		kvm_register_device_ops(&kvm_arm_vgic_v2_ops,

					KVM_DEV_TYPE_ARM_VGIC_V2);

		break;

#ifdef CONFIG_KVM_ARM_VGIC_V3

	case KVM_DEV_TYPE_ARM_VGIC_V3:

		kvm_register_device_ops(&kvm_arm_vgic_v3_ops,

					KVM_DEV_TYPE_ARM_VGIC_V3);

		break;

#endif

	}

}



/* V2 ops */



static int vgic_v2_set_attr(struct kvm_device *dev,

			    struct kvm_device_attr *attr)

{

	return -ENXIO;

}



static int vgic_v2_get_attr(struct kvm_device *dev,

			    struct kvm_device_attr *attr)

{

	return -ENXIO;

}



static int vgic_v2_has_attr(struct kvm_device *dev,

			    struct kvm_device_attr *attr)

{

	return -ENXIO;

}



struct kvm_device_ops kvm_arm_vgic_v2_ops = {

	.name = "kvm-arm-vgic-v2",

	.create = vgic_create,

	.destroy = vgic_destroy,

	.set_attr = vgic_v2_set_attr,

	.get_attr = vgic_v2_get_attr,

	.has_attr = vgic_v2_has_attr,

};



/* V3 ops */



#ifdef CONFIG_KVM_ARM_VGIC_V3



static int vgic_v3_set_attr(struct kvm_device *dev,

			    struct kvm_device_attr *attr)

{

	return -ENXIO;

}



static int vgic_v3_get_attr(struct kvm_device *dev,

			    struct kvm_device_attr *attr)

{

	return -ENXIO;

}



static int vgic_v3_has_attr(struct kvm_device *dev,

			    struct kvm_device_attr *attr)

{

	return -ENXIO;

}



struct kvm_device_ops kvm_arm_vgic_v3_ops = {

	.name = "kvm-arm-vgic-v3",

	.create = vgic_create,

	.destroy = vgic_destroy,

	.set_attr = vgic_v3_set_attr,

	.get_attr = vgic_v3_get_attr,

	.has_attr = vgic_v3_has_attr,

};



#endif /* CONFIG_KVM_ARM_VGIC_V3 */

virt/kvm/arm/vgic/vgic.h

+2 −0
Original line number Diff line number Diff line
@@ -73,4 +73,6 @@ static inline int vgic_register_redist_iodevs(struct kvm *kvm, 
}

#endif



void kvm_register_vgic_device(unsigned long type);



#endif