1*4ae0fc18SManos Pitsidianakis /* 2*4ae0fc18SManos Pitsidianakis * Vhost-user snd virtio device 3*4ae0fc18SManos Pitsidianakis * 4*4ae0fc18SManos Pitsidianakis * Copyright (c) 2023 Manos Pitsidianakis <manos.pitsidianakis@linaro.org> 5*4ae0fc18SManos Pitsidianakis * 6*4ae0fc18SManos Pitsidianakis * Simple wrapper of the generic vhost-user-device. 7*4ae0fc18SManos Pitsidianakis * 8*4ae0fc18SManos Pitsidianakis * SPDX-License-Identifier: GPL-2.0-or-later 9*4ae0fc18SManos Pitsidianakis */ 10*4ae0fc18SManos Pitsidianakis 11*4ae0fc18SManos Pitsidianakis #include "qemu/osdep.h" 12*4ae0fc18SManos Pitsidianakis #include "qapi/error.h" 13*4ae0fc18SManos Pitsidianakis #include "hw/qdev-properties.h" 14*4ae0fc18SManos Pitsidianakis #include "hw/virtio/virtio-bus.h" 15*4ae0fc18SManos Pitsidianakis #include "hw/virtio/vhost-user-snd.h" 16*4ae0fc18SManos Pitsidianakis #include "standard-headers/linux/virtio_ids.h" 17*4ae0fc18SManos Pitsidianakis #include "standard-headers/linux/virtio_snd.h" 18*4ae0fc18SManos Pitsidianakis 19*4ae0fc18SManos Pitsidianakis static const VMStateDescription vu_snd_vmstate = { 20*4ae0fc18SManos Pitsidianakis .name = "vhost-user-snd", 21*4ae0fc18SManos Pitsidianakis .unmigratable = 1, 22*4ae0fc18SManos Pitsidianakis }; 23*4ae0fc18SManos Pitsidianakis 24*4ae0fc18SManos Pitsidianakis static Property vsnd_properties[] = { 25*4ae0fc18SManos Pitsidianakis DEFINE_PROP_CHR("chardev", VHostUserBase, chardev), 26*4ae0fc18SManos Pitsidianakis DEFINE_PROP_END_OF_LIST(), 27*4ae0fc18SManos Pitsidianakis }; 28*4ae0fc18SManos Pitsidianakis 29*4ae0fc18SManos Pitsidianakis static void vu_snd_base_realize(DeviceState *dev, Error **errp) 30*4ae0fc18SManos Pitsidianakis { 31*4ae0fc18SManos Pitsidianakis VHostUserBase *vub = VHOST_USER_BASE(dev); 32*4ae0fc18SManos Pitsidianakis VHostUserBaseClass *vubs = VHOST_USER_BASE_GET_CLASS(dev); 33*4ae0fc18SManos Pitsidianakis 34*4ae0fc18SManos Pitsidianakis vub->virtio_id = VIRTIO_ID_SOUND; 35*4ae0fc18SManos Pitsidianakis vub->num_vqs = 4; 36*4ae0fc18SManos Pitsidianakis vub->config_size = sizeof(struct virtio_snd_config); 37*4ae0fc18SManos Pitsidianakis vub->vq_size = 64; 38*4ae0fc18SManos Pitsidianakis 39*4ae0fc18SManos Pitsidianakis vubs->parent_realize(dev, errp); 40*4ae0fc18SManos Pitsidianakis } 41*4ae0fc18SManos Pitsidianakis 42*4ae0fc18SManos Pitsidianakis static void vu_snd_class_init(ObjectClass *klass, void *data) 43*4ae0fc18SManos Pitsidianakis { 44*4ae0fc18SManos Pitsidianakis DeviceClass *dc = DEVICE_CLASS(klass); 45*4ae0fc18SManos Pitsidianakis VHostUserBaseClass *vubc = VHOST_USER_BASE_CLASS(klass); 46*4ae0fc18SManos Pitsidianakis 47*4ae0fc18SManos Pitsidianakis dc->vmsd = &vu_snd_vmstate; 48*4ae0fc18SManos Pitsidianakis device_class_set_props(dc, vsnd_properties); 49*4ae0fc18SManos Pitsidianakis device_class_set_parent_realize(dc, vu_snd_base_realize, 50*4ae0fc18SManos Pitsidianakis &vubc->parent_realize); 51*4ae0fc18SManos Pitsidianakis 52*4ae0fc18SManos Pitsidianakis set_bit(DEVICE_CATEGORY_SOUND, dc->categories); 53*4ae0fc18SManos Pitsidianakis } 54*4ae0fc18SManos Pitsidianakis 55*4ae0fc18SManos Pitsidianakis static const TypeInfo vu_snd_info = { 56*4ae0fc18SManos Pitsidianakis .name = TYPE_VHOST_USER_SND, 57*4ae0fc18SManos Pitsidianakis .parent = TYPE_VHOST_USER_BASE, 58*4ae0fc18SManos Pitsidianakis .instance_size = sizeof(VHostUserSound), 59*4ae0fc18SManos Pitsidianakis .class_init = vu_snd_class_init, 60*4ae0fc18SManos Pitsidianakis }; 61*4ae0fc18SManos Pitsidianakis 62*4ae0fc18SManos Pitsidianakis static void vu_snd_register_types(void) 63*4ae0fc18SManos Pitsidianakis { 64*4ae0fc18SManos Pitsidianakis type_register_static(&vu_snd_info); 65*4ae0fc18SManos Pitsidianakis } 66*4ae0fc18SManos Pitsidianakis 67*4ae0fc18SManos Pitsidianakis type_init(vu_snd_register_types) 68