1 /* 2 * Vhost-user snd virtio device 3 * 4 * Copyright (c) 2023 Manos Pitsidianakis <manos.pitsidianakis@linaro.org> 5 * 6 * Simple wrapper of the generic vhost-user-device. 7 * 8 * SPDX-License-Identifier: GPL-2.0-or-later 9 */ 10 11 #include "qemu/osdep.h" 12 #include "qapi/error.h" 13 #include "hw/qdev-properties.h" 14 #include "hw/virtio/virtio-bus.h" 15 #include "hw/virtio/vhost-user-snd.h" 16 #include "standard-headers/linux/virtio_ids.h" 17 #include "standard-headers/linux/virtio_snd.h" 18 19 static const VMStateDescription vu_snd_vmstate = { 20 .name = "vhost-user-snd", 21 .unmigratable = 1, 22 }; 23 24 static const Property vsnd_properties[] = { 25 DEFINE_PROP_CHR("chardev", VHostUserBase, chardev), 26 }; 27 28 static void vu_snd_base_realize(DeviceState *dev, Error **errp) 29 { 30 VHostUserBase *vub = VHOST_USER_BASE(dev); 31 VHostUserBaseClass *vubs = VHOST_USER_BASE_GET_CLASS(dev); 32 33 vub->virtio_id = VIRTIO_ID_SOUND; 34 vub->num_vqs = 4; 35 vub->config_size = sizeof(struct virtio_snd_config); 36 vub->vq_size = 64; 37 38 vubs->parent_realize(dev, errp); 39 } 40 41 static void vu_snd_class_init(ObjectClass *klass, void *data) 42 { 43 DeviceClass *dc = DEVICE_CLASS(klass); 44 VHostUserBaseClass *vubc = VHOST_USER_BASE_CLASS(klass); 45 46 dc->vmsd = &vu_snd_vmstate; 47 device_class_set_props(dc, vsnd_properties); 48 device_class_set_parent_realize(dc, vu_snd_base_realize, 49 &vubc->parent_realize); 50 51 set_bit(DEVICE_CATEGORY_SOUND, dc->categories); 52 } 53 54 static const TypeInfo vu_snd_info = { 55 .name = TYPE_VHOST_USER_SND, 56 .parent = TYPE_VHOST_USER_BASE, 57 .instance_size = sizeof(VHostUserSound), 58 .class_init = vu_snd_class_init, 59 }; 60 61 static void vu_snd_register_types(void) 62 { 63 type_register_static(&vu_snd_info); 64 } 65 66 type_init(vu_snd_register_types) 67