From c86c772191d7e65f873e6908e9604b31168936cd Mon Sep 17 00:00:00 2001 From: Eric Auger Date: Mon, 30 Nov 2015 14:01:58 +0100 Subject: [PATCH] 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: Eric Auger Signed-off-by: Andre Przywara Reviewed-by: Christoffer Dall --- virt/kvm/arm/vgic/vgic-kvm-device.c | 108 ++++++++++++++++++++++++++++ virt/kvm/arm/vgic/vgic.h | 2 + 2 files changed, 110 insertions(+) create mode 100644 virt/kvm/arm/vgic/vgic-kvm-device.c diff --git a/virt/kvm/arm/vgic/vgic-kvm-device.c b/virt/kvm/arm/vgic/vgic-kvm-device.c new file mode 100644 index 000000000000..ff332f34a221 --- /dev/null +++ b/virt/kvm/arm/vgic/vgic-kvm-device.c @@ -0,0 +1,108 @@ +/* + * VGIC: KVM DEVICE API + * + * Copyright (C) 2015 ARM Ltd. + * Author: Marc Zyngier + * + * 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 +#include + +/* 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 */ + diff --git a/virt/kvm/arm/vgic/vgic.h b/virt/kvm/arm/vgic/vgic.h index 44c6a1bc189a..77b0ab38a271 100644 --- a/virt/kvm/arm/vgic/vgic.h +++ b/virt/kvm/arm/vgic/vgic.h @@ -73,4 +73,6 @@ static inline int vgic_register_redist_iodevs(struct kvm *kvm, } #endif +void kvm_register_vgic_device(unsigned long type); + #endif -- 2.20.1