projects / thirdparty / kernel / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| c86c7721 EA |
1 | /* |
| 2 | * VGIC: KVM DEVICE API | |
| 3 | * | |
| 4 | * Copyright (C) 2015 ARM Ltd. | |
| 5 | * Author: Marc Zyngier <marc.zyngier@arm.com> | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License version 2 as | |
| 9 | * published by the Free Software Foundation. | |
| 10 | * | |
| 11 | * This program is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | * GNU General Public License for more details. | |
| 15 | */ | |
| 16 | #include <linux/kvm_host.h> | |
| 17 | #include <kvm/arm_vgic.h> | |
| 18 | ||
| 19 | /* common helpers */ | |
| 20 | ||
| 21 | static int vgic_create(struct kvm_device *dev, u32 type) | |
| 22 | { | |
| 23 | return kvm_vgic_create(dev->kvm, type); | |
| 24 | } | |
| 25 | ||
| 26 | static void vgic_destroy(struct kvm_device *dev) | |
| 27 | { | |
| 28 | kfree(dev); | |
| 29 | } | |
| 30 | ||
| 31 | void kvm_register_vgic_device(unsigned long type) | |
| 32 | { | |
| 33 | switch (type) { | |
| 34 | case KVM_DEV_TYPE_ARM_VGIC_V2: | |
| 35 | kvm_register_device_ops(&kvm_arm_vgic_v2_ops, | |
| 36 | KVM_DEV_TYPE_ARM_VGIC_V2); | |
| 37 | break; | |
| 38 | #ifdef CONFIG_KVM_ARM_VGIC_V3 | |
| 39 | case KVM_DEV_TYPE_ARM_VGIC_V3: | |
| 40 | kvm_register_device_ops(&kvm_arm_vgic_v3_ops, | |
| 41 | KVM_DEV_TYPE_ARM_VGIC_V3); | |
| 42 | break; | |
| 43 | #endif | |
| 44 | } | |
| 45 | } | |
| 46 | ||
| 47 | /* V2 ops */ | |
| 48 | ||
| 49 | static int vgic_v2_set_attr(struct kvm_device *dev, | |
| 50 | struct kvm_device_attr *attr) | |
| 51 | { | |
| 52 | return -ENXIO; | |
| 53 | } | |
| 54 | ||
| 55 | static int vgic_v2_get_attr(struct kvm_device *dev, | |
| 56 | struct kvm_device_attr *attr) | |
| 57 | { | |
| 58 | return -ENXIO; | |
| 59 | } | |
| 60 | ||
| 61 | static int vgic_v2_has_attr(struct kvm_device *dev, | |
| 62 | struct kvm_device_attr *attr) | |
| 63 | { | |
| 64 | return -ENXIO; | |
| 65 | } | |
| 66 | ||
| 67 | struct kvm_device_ops kvm_arm_vgic_v2_ops = { | |
| 68 | .name = "kvm-arm-vgic-v2", | |
| 69 | .create = vgic_create, | |
| 70 | .destroy = vgic_destroy, | |
| 71 | .set_attr = vgic_v2_set_attr, | |
| 72 | .get_attr = vgic_v2_get_attr, | |
| 73 | .has_attr = vgic_v2_has_attr, | |
| 74 | }; | |
| 75 | ||
| 76 | /* V3 ops */ | |
| 77 | ||
| 78 | #ifdef CONFIG_KVM_ARM_VGIC_V3 | |
| 79 | ||
| 80 | static int vgic_v3_set_attr(struct kvm_device *dev, | |
| 81 | struct kvm_device_attr *attr) | |
| 82 | { | |
| 83 | return -ENXIO; | |
| 84 | } | |
| 85 | ||
| 86 | static int vgic_v3_get_attr(struct kvm_device *dev, | |
| 87 | struct kvm_device_attr *attr) | |
| 88 | { | |
| 89 | return -ENXIO; | |
| 90 | } | |
| 91 | ||
| 92 | static int vgic_v3_has_attr(struct kvm_device *dev, | |
| 93 | struct kvm_device_attr *attr) | |
| 94 | { | |
| 95 | return -ENXIO; | |
| 96 | } | |
| 97 | ||
| 98 | struct kvm_device_ops kvm_arm_vgic_v3_ops = { | |
| 99 | .name = "kvm-arm-vgic-v3", | |
| 100 | .create = vgic_create, | |
| 101 | .destroy = vgic_destroy, | |
| 102 | .set_attr = vgic_v3_set_attr, | |
| 103 | .get_attr = vgic_v3_get_attr, | |
| 104 | .has_attr = vgic_v3_has_attr, | |
| 105 | }; | |
| 106 | ||
| 107 | #endif /* CONFIG_KVM_ARM_VGIC_V3 */ | |
| 108 |