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

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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: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
This commit is contained in:
Eric Auger 2015-11-30 14:01:58 +01:00 committed by Christoffer Dall
parent 621ecd8d21
commit c86c772191
2 changed files with 110 additions and 0 deletions
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108
virt/kvm/arm/vgic/vgic-kvm-device.c Normal file
View file

@ -0,0 +1,108 @@
/*
* 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 */

2
virt/kvm/arm/vgic/vgic.h
View file

@ -73,4 +73,6 @@ static inline int vgic_register_redist_iodevs(struct kvm *kvm,
}
#endif
void kvm_register_vgic_device(unsigned long type);
#endif