| 1 | /* |
| 2 | * Generic vhost-user-test-device implementation for any vhost-user-backend |
| 3 | * |
| 4 | * This is a concrete implementation of vhost-user-base which can be |
| 5 | * configured via properties. It is useful for development and |
| 6 | * prototyping. It expects configuration details (if any) to be |
| 7 | * handled by the vhost-user daemon itself. |
| 8 | * |
| 9 | * Copyright (c) 2023 Linaro Ltd |
| 10 | * Author: Alex Bennée <alex.bennee@linaro.org> |
| 11 | * |
| 12 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 13 | */ |
| 14 | |
| 15 | #include "qemu/osdep.h" |
| 16 | #include "qapi/error.h" |
| 17 | #include "hw/core/qdev-properties.h" |
| 18 | #include "hw/virtio/virtio-bus.h" |
| 19 | #include "hw/virtio/vhost-user-base.h" |
| 20 | #include "qemu/error-report.h" |
| 21 | |
| 22 | /* |
| 23 | * The following is a concrete implementation of the base class which |
| 24 | * allows the user to define the key parameters via the command line. |
| 25 | */ |
| 26 | |
| 27 | static const VMStateDescription vud_vmstate = { |
| 28 | .name = "vhost-user-test-device", |
| 29 | .unmigratable = 1, |
| 30 | }; |
| 31 | |
| 32 | static const Property vud_properties[] = { |
| 33 | DEFINE_PROP_CHR("chardev", VHostUserBase, chardev), |
| 34 | DEFINE_PROP_UINT16("virtio-id", VHostUserBase, virtio_id, 0), |
| 35 | DEFINE_PROP_UINT32("vq_size", VHostUserBase, vq_size, 64), |
| 36 | DEFINE_PROP_UINT32("num_vqs", VHostUserBase, num_vqs, 1), |
| 37 | DEFINE_PROP_UINT32("config_size", VHostUserBase, config_size, 0), |
| 38 | }; |
| 39 | |
| 40 | static void vud_class_init(ObjectClass *klass, const void *data) |
| 41 | { |
| 42 | DeviceClass *dc = DEVICE_CLASS(klass); |
| 43 | |
| 44 | device_class_set_props(dc, vud_properties); |
| 45 | dc->vmsd = &vud_vmstate; |
| 46 | set_bit(DEVICE_CATEGORY_INPUT, dc->categories); |
| 47 | } |
| 48 | |
| 49 | static const TypeInfo vud_info = { |
| 50 | .name = TYPE_VHOST_USER_TEST_DEVICE, |
| 51 | .parent = TYPE_VHOST_USER_BASE, |
| 52 | .class_init = vud_class_init, |
| 53 | }; |
| 54 | |
| 55 | static void vu_register_types(void) |
| 56 | { |
| 57 | type_register_static(&vud_info); |
| 58 | } |
| 59 | |
| 60 | type_init(vu_register_types) |