| 1 | /* |
| 2 | * Vhost-user RTC virtio device |
| 3 | * |
| 4 | * Copyright (c) 2025 Manos Pitsidianakis <manos.pitsidianakis@linaro.org> |
| 5 | * Copyright 2026 Panasonic Automotive Systems Co., Ltd. |
| 6 | * |
| 7 | * Simple wrapper of the generic vhost-user-device. |
| 8 | * |
| 9 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 10 | */ |
| 11 | |
| 12 | #include "qemu/osdep.h" |
| 13 | #include "qapi/error.h" |
| 14 | #include "hw/virtio/vhost-user-rtc.h" |
| 15 | #include "standard-headers/linux/virtio_ids.h" |
| 16 | |
| 17 | static const VMStateDescription vu_rtc_vmstate = { |
| 18 | .name = "vhost-user-rtc", |
| 19 | .unmigratable = 1, |
| 20 | }; |
| 21 | |
| 22 | static const Property vrtc_properties[] = { |
| 23 | DEFINE_PROP_CHR("chardev", VHostUserBase, chardev), |
| 24 | }; |
| 25 | |
| 26 | static void vu_rtc_base_realize(DeviceState *dev, Error **errp) |
| 27 | { |
| 28 | VHostUserBase *vub = VHOST_USER_BASE(dev); |
| 29 | VHostUserBaseClass *vubs = VHOST_USER_BASE_GET_CLASS(dev); |
| 30 | |
| 31 | vub->virtio_id = VIRTIO_ID_CLOCK; |
| 32 | vub->num_vqs = 2; |
| 33 | vub->config_size = 0; |
| 34 | vub->vq_size = 1024; |
| 35 | |
| 36 | vubs->parent_realize(dev, errp); |
| 37 | } |
| 38 | |
| 39 | static void vu_rtc_class_init(ObjectClass *klass, const void *data) |
| 40 | { |
| 41 | DeviceClass *dc = DEVICE_CLASS(klass); |
| 42 | VHostUserBaseClass *vubc = VHOST_USER_BASE_CLASS(klass); |
| 43 | |
| 44 | dc->vmsd = &vu_rtc_vmstate; |
| 45 | device_class_set_props(dc, vrtc_properties); |
| 46 | device_class_set_parent_realize(dc, vu_rtc_base_realize, |
| 47 | &vubc->parent_realize); |
| 48 | |
| 49 | set_bit(DEVICE_CATEGORY_MISC, dc->categories); |
| 50 | } |
| 51 | |
| 52 | static const TypeInfo vu_rtc_info = { |
| 53 | .name = TYPE_VHOST_USER_RTC, |
| 54 | .parent = TYPE_VHOST_USER_BASE, |
| 55 | .instance_size = sizeof(VHostUserRTC), |
| 56 | .class_init = vu_rtc_class_init, |
| 57 | }; |
| 58 | |
| 59 | static void vu_rtc_register_types(void) |
| 60 | { |
| 61 | type_register_static(&vu_rtc_info); |
| 62 | } |
| 63 | |
| 64 | type_init(vu_rtc_register_types) |