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

/*

 * 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 */

}

#endif

void kvm_register_vgic_device(unsigned long type);

#endif