hw/display/vhost-user-gpu.c

   1 /*
   2  * vhost-user GPU Device
   3  *
   4  * Copyright Red Hat, Inc. 2018
   5  *
   6  * Authors:
   7  *     Marc-André Lureau <marcandre.lureau@redhat.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  10  * See the COPYING file in the top-level directory.
  11  */
  12
  13 #include "qemu/osdep.h"
  14 #include "qemu/error-report.h"
  15 #include "qemu/sockets.h"
  16 #include "hw/qdev-properties.h"
  17 #include "hw/virtio/virtio-gpu.h"
  18 #include "chardev/char-fe.h"
  19 #include "qapi/error.h"
  20 #include "migration/blocker.h"
  21
  22 typedef enum VhostUserGpuRequest {
  23     VHOST_USER_GPU_NONE = 0,
  24     VHOST_USER_GPU_GET_PROTOCOL_FEATURES,
  25     VHOST_USER_GPU_SET_PROTOCOL_FEATURES,
  26     VHOST_USER_GPU_GET_DISPLAY_INFO,
  27     VHOST_USER_GPU_CURSOR_POS,
  28     VHOST_USER_GPU_CURSOR_POS_HIDE,
  29     VHOST_USER_GPU_CURSOR_UPDATE,
  30     VHOST_USER_GPU_SCANOUT,
  31     VHOST_USER_GPU_UPDATE,
  32     VHOST_USER_GPU_DMABUF_SCANOUT,
  33     VHOST_USER_GPU_DMABUF_UPDATE,
  34 } VhostUserGpuRequest;
  35
  36 typedef struct VhostUserGpuDisplayInfoReply {
  37     struct virtio_gpu_resp_display_info info;
  38 } VhostUserGpuDisplayInfoReply;
  39
  40 typedef struct VhostUserGpuCursorPos {
  41     uint32_t scanout_id;
  42     uint32_t x;
  43     uint32_t y;
  44 } QEMU_PACKED VhostUserGpuCursorPos;
  45
  46 typedef struct VhostUserGpuCursorUpdate {
  47     VhostUserGpuCursorPos pos;
  48     uint32_t hot_x;
  49     uint32_t hot_y;
  50     uint32_t data[64 * 64];
  51 } QEMU_PACKED VhostUserGpuCursorUpdate;
  52
  53 typedef struct VhostUserGpuScanout {
  54     uint32_t scanout_id;
  55     uint32_t width;
  56     uint32_t height;
  57 } QEMU_PACKED VhostUserGpuScanout;
  58
  59 typedef struct VhostUserGpuUpdate {
  60     uint32_t scanout_id;
  61     uint32_t x;
  62     uint32_t y;
  63     uint32_t width;
  64     uint32_t height;
  65     uint8_t data[];
  66 } QEMU_PACKED VhostUserGpuUpdate;
  67
  68 typedef struct VhostUserGpuDMABUFScanout {
  69     uint32_t scanout_id;
  70     uint32_t x;
  71     uint32_t y;
  72     uint32_t width;
  73     uint32_t height;
  74     uint32_t fd_width;
  75     uint32_t fd_height;
  76     uint32_t fd_stride;
  77     uint32_t fd_flags;
  78     int fd_drm_fourcc;
  79 } QEMU_PACKED VhostUserGpuDMABUFScanout;
  80
  81 typedef struct VhostUserGpuMsg {
  82     uint32_t request; /* VhostUserGpuRequest */
  83     uint32_t flags;
  84     uint32_t size; /* the following payload size */
  85     union {
  86         VhostUserGpuCursorPos cursor_pos;
  87         VhostUserGpuCursorUpdate cursor_update;
  88         VhostUserGpuScanout scanout;
  89         VhostUserGpuUpdate update;
  90         VhostUserGpuDMABUFScanout dmabuf_scanout;
  91         struct virtio_gpu_resp_display_info display_info;
  92         uint64_t u64;
  93     } payload;
  94 } QEMU_PACKED VhostUserGpuMsg;
  95
  96 static VhostUserGpuMsg m __attribute__ ((unused));
  97 #define VHOST_USER_GPU_HDR_SIZE \
  98     (sizeof(m.request) + sizeof(m.size) + sizeof(m.flags))
  99
 100 #define VHOST_USER_GPU_MSG_FLAG_REPLY 0x4
 101
 102 static void vhost_user_gpu_update_blocked(VhostUserGPU *g, bool blocked);
 103
 104 static void
 105 vhost_user_gpu_handle_cursor(VhostUserGPU *g, VhostUserGpuMsg *msg)
 106 {
 107     VhostUserGpuCursorPos *pos = &msg->payload.cursor_pos;
 108     struct virtio_gpu_scanout *s;
 109
 110     if (pos->scanout_id >= g->parent_obj.conf.max_outputs) {
 111         return;
 112     }
 113     s = &g->parent_obj.scanout[pos->scanout_id];
 114
 115     if (msg->request == VHOST_USER_GPU_CURSOR_UPDATE) {
 116         VhostUserGpuCursorUpdate *up = &msg->payload.cursor_update;
 117         if (!s->current_cursor) {
 118             s->current_cursor = cursor_alloc(64, 64);
 119         }
 120
 121         s->current_cursor->hot_x = up->hot_x;
 122         s->current_cursor->hot_y = up->hot_y;
 123
 124         memcpy(s->current_cursor->data, up->data,
 125                64 * 64 * sizeof(uint32_t));
 126
 127         dpy_cursor_define(s->con, s->current_cursor);
 128     }
 129
 130     dpy_mouse_set(s->con, pos->x, pos->y,
 131                   msg->request != VHOST_USER_GPU_CURSOR_POS_HIDE);
 132 }
 133
 134 static void
 135 vhost_user_gpu_send_msg(VhostUserGPU *g, const VhostUserGpuMsg *msg)
 136 {
 137     qemu_chr_fe_write(&g->vhost_chr, (uint8_t *)msg,
 138                       VHOST_USER_GPU_HDR_SIZE + msg->size);
 139 }
 140
 141 static void
 142 vhost_user_gpu_unblock(VhostUserGPU *g)
 143 {
 144     VhostUserGpuMsg msg = {
 145         .request = VHOST_USER_GPU_DMABUF_UPDATE,
 146         .flags = VHOST_USER_GPU_MSG_FLAG_REPLY,
 147     };
 148
 149     vhost_user_gpu_send_msg(g, &msg);
 150 }
 151
 152 static void
 153 vhost_user_gpu_handle_display(VhostUserGPU *g, VhostUserGpuMsg *msg)
 154 {
 155     QemuConsole *con = NULL;
 156     struct virtio_gpu_scanout *s;
 157
 158     switch (msg->request) {
 159     case VHOST_USER_GPU_GET_PROTOCOL_FEATURES: {
 160         VhostUserGpuMsg reply = {
 161             .request = msg->request,
 162             .flags = VHOST_USER_GPU_MSG_FLAG_REPLY,
 163             .size = sizeof(uint64_t),
 164         };
 165
 166         vhost_user_gpu_send_msg(g, &reply);
 167         break;
 168     }
 169     case VHOST_USER_GPU_SET_PROTOCOL_FEATURES: {
 170         break;
 171     }
 172     case VHOST_USER_GPU_GET_DISPLAY_INFO: {
 173         struct virtio_gpu_resp_display_info display_info = { {} };
 174         VhostUserGpuMsg reply = {
 175             .request = msg->request,
 176             .flags = VHOST_USER_GPU_MSG_FLAG_REPLY,
 177             .size = sizeof(struct virtio_gpu_resp_display_info),
 178         };
 179
 180         display_info.hdr.type = VIRTIO_GPU_RESP_OK_DISPLAY_INFO;
 181         virtio_gpu_base_fill_display_info(VIRTIO_GPU_BASE(g), &display_info);
 182         memcpy(&reply.payload.display_info, &display_info,
 183                sizeof(display_info));
 184         vhost_user_gpu_send_msg(g, &reply);
 185         break;
 186     }
 187     case VHOST_USER_GPU_SCANOUT: {
 188         VhostUserGpuScanout *m = &msg->payload.scanout;
 189
 190         if (m->scanout_id >= g->parent_obj.conf.max_outputs) {
 191             return;
 192         }
 193
 194         g->parent_obj.enable = 1;
 195         s = &g->parent_obj.scanout[m->scanout_id];
 196         con = s->con;
 197
 198         if (m->width == 0) {
 199             dpy_gfx_replace_surface(con, NULL);
 200         } else {
 201             s->ds = qemu_create_displaysurface(m->width, m->height);
 202             /* replace surface on next update */
 203         }
 204
 205         break;
 206     }
 207     case VHOST_USER_GPU_DMABUF_SCANOUT: {
 208         VhostUserGpuDMABUFScanout *m = &msg->payload.dmabuf_scanout;
 209         int fd = qemu_chr_fe_get_msgfd(&g->vhost_chr);
 210         QemuDmaBuf *dmabuf;
 211
 212         if (m->scanout_id >= g->parent_obj.conf.max_outputs) {
 213             error_report("invalid scanout: %d", m->scanout_id);
 214             if (fd >= 0) {
 215                 close(fd);
 216             }
 217             break;
 218         }
 219
 220         g->parent_obj.enable = 1;
 221         con = g->parent_obj.scanout[m->scanout_id].con;
 222         dmabuf = &g->dmabuf[m->scanout_id];
 223         if (dmabuf->fd >= 0) {
 224             close(dmabuf->fd);
 225             dmabuf->fd = -1;
 226         }
 227         dpy_gl_release_dmabuf(con, dmabuf);
 228         if (fd == -1) {
 229             dpy_gl_scanout_disable(con);
 230             break;
 231         }
 232         *dmabuf = (QemuDmaBuf) {
 233             .fd = fd,
 234             .width = m->fd_width,
 235             .height = m->fd_height,
 236             .stride = m->fd_stride,
 237             .fourcc = m->fd_drm_fourcc,
 238             .y0_top = m->fd_flags & VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP,
 239         };
 240         dpy_gl_scanout_dmabuf(con, dmabuf);
 241         break;
 242     }
 243     case VHOST_USER_GPU_DMABUF_UPDATE: {
 244         VhostUserGpuUpdate *m = &msg->payload.update;
 245
 246         if (m->scanout_id >= g->parent_obj.conf.max_outputs ||
 247             !g->parent_obj.scanout[m->scanout_id].con) {
 248             error_report("invalid scanout update: %d", m->scanout_id);
 249             vhost_user_gpu_unblock(g);
 250             break;
 251         }
 252
 253         con = g->parent_obj.scanout[m->scanout_id].con;
 254         if (!console_has_gl(con)) {
 255             error_report("console doesn't support GL!");
 256             vhost_user_gpu_unblock(g);
 257             break;
 258         }
 259         g->backend_blocked = true;
 260         dpy_gl_update(con, m->x, m->y, m->width, m->height);
 261         break;
 262     }
 263     case VHOST_USER_GPU_UPDATE: {
 264         VhostUserGpuUpdate *m = &msg->payload.update;
 265
 266         if (m->scanout_id >= g->parent_obj.conf.max_outputs) {
 267             break;
 268         }
 269         s = &g->parent_obj.scanout[m->scanout_id];
 270         con = s->con;
 271         pixman_image_t *image =
 272             pixman_image_create_bits(PIXMAN_x8r8g8b8,
 273                                      m->width,
 274                                      m->height,
 275                                      (uint32_t *)m->data,
 276                                      m->width * 4);
 277
 278         pixman_image_composite(PIXMAN_OP_SRC,
 279                                image, NULL, s->ds->image,
 280                                0, 0, 0, 0, m->x, m->y, m->width, m->height);
 281
 282         pixman_image_unref(image);
 283         if (qemu_console_surface(con) != s->ds) {
 284             dpy_gfx_replace_surface(con, s->ds);
 285         } else {
 286             dpy_gfx_update(con, m->x, m->y, m->width, m->height);
 287         }
 288         break;
 289     }
 290     default:
 291         g_warning("unhandled message %d %d", msg->request, msg->size);
 292     }
 293
 294     if (con && qemu_console_is_gl_blocked(con)) {
 295         vhost_user_gpu_update_blocked(g, true);
 296     }
 297 }
 298
 299 static void
 300 vhost_user_gpu_chr_read(void *opaque)
 301 {
 302     VhostUserGPU *g = opaque;
 303     VhostUserGpuMsg *msg = NULL;
 304     VhostUserGpuRequest request;
 305     uint32_t size, flags;
 306     int r;
 307
 308     r = qemu_chr_fe_read_all(&g->vhost_chr,
 309                              (uint8_t *)&request, sizeof(uint32_t));
 310     if (r != sizeof(uint32_t)) {
 311         error_report("failed to read msg header: %d, %d", r, errno);
 312         goto end;
 313     }
 314
 315     r = qemu_chr_fe_read_all(&g->vhost_chr,
 316                              (uint8_t *)&flags, sizeof(uint32_t));
 317     if (r != sizeof(uint32_t)) {
 318         error_report("failed to read msg flags");
 319         goto end;
 320     }
 321
 322     r = qemu_chr_fe_read_all(&g->vhost_chr,
 323                              (uint8_t *)&size, sizeof(uint32_t));
 324     if (r != sizeof(uint32_t)) {
 325         error_report("failed to read msg size");
 326         goto end;
 327     }
 328
 329     msg = g_malloc(VHOST_USER_GPU_HDR_SIZE + size);
 330
 331     r = qemu_chr_fe_read_all(&g->vhost_chr,
 332                              (uint8_t *)&msg->payload, size);
 333     if (r != size) {
 334         error_report("failed to read msg payload %d != %d", r, size);
 335         goto end;
 336     }
 337
 338     msg->request = request;
 339     msg->flags = size;
 340     msg->size = size;
 341
 342     if (request == VHOST_USER_GPU_CURSOR_UPDATE ||
 343         request == VHOST_USER_GPU_CURSOR_POS ||
 344         request == VHOST_USER_GPU_CURSOR_POS_HIDE) {
 345         vhost_user_gpu_handle_cursor(g, msg);
 346     } else {
 347         vhost_user_gpu_handle_display(g, msg);
 348     }
 349
 350 end:
 351     g_free(msg);
 352 }
 353
 354 static void
 355 vhost_user_gpu_update_blocked(VhostUserGPU *g, bool blocked)
 356 {
 357     qemu_set_fd_handler(g->vhost_gpu_fd,
 358                         blocked ? NULL : vhost_user_gpu_chr_read, NULL, g);
 359 }
 360
 361 static void
 362 vhost_user_gpu_gl_flushed(VirtIOGPUBase *b)
 363 {
 364     VhostUserGPU *g = VHOST_USER_GPU(b);
 365
 366     if (g->backend_blocked) {
 367         vhost_user_gpu_unblock(g);
 368         g->backend_blocked = false;
 369     }
 370
 371     vhost_user_gpu_update_blocked(g, false);
 372 }
 373
 374 static bool
 375 vhost_user_gpu_do_set_socket(VhostUserGPU *g, Error **errp)
 376 {
 377     Chardev *chr;
 378     int sv[2];
 379
 380     if (qemu_socketpair(PF_UNIX, SOCK_STREAM, 0, sv) == -1) {
 381         error_setg_errno(errp, errno, "socketpair() failed");
 382         return false;
 383     }
 384
 385     chr = CHARDEV(object_new(TYPE_CHARDEV_SOCKET));
 386     if (!chr || qemu_chr_add_client(chr, sv[0]) == -1) {
 387         error_setg(errp, "Failed to make socket chardev");
 388         goto err;
 389     }
 390     if (!qemu_chr_fe_init(&g->vhost_chr, chr, errp)) {
 391         goto err;
 392     }
 393     if (vhost_user_gpu_set_socket(&g->vhost->dev, sv[1]) < 0) {
 394         error_setg(errp, "Failed to set vhost-user-gpu socket");
 395         qemu_chr_fe_deinit(&g->vhost_chr, false);
 396         goto err;
 397     }
 398
 399     g->vhost_gpu_fd = sv[0];
 400     vhost_user_gpu_update_blocked(g, false);
 401     close(sv[1]);
 402     return true;
 403
 404 err:
 405     close(sv[0]);
 406     close(sv[1]);
 407     if (chr) {
 408         object_unref(OBJECT(chr));
 409     }
 410     return false;
 411 }
 412
 413 static void
 414 vhost_user_gpu_get_config(VirtIODevice *vdev, uint8_t *config_data)
 415 {
 416     VhostUserGPU *g = VHOST_USER_GPU(vdev);
 417     VirtIOGPUBase *b = VIRTIO_GPU_BASE(vdev);
 418     struct virtio_gpu_config *vgconfig =
 419         (struct virtio_gpu_config *)config_data;
 420     Error *local_err = NULL;
 421     int ret;
 422
 423     memset(config_data, 0, sizeof(struct virtio_gpu_config));
 424
 425     ret = vhost_dev_get_config(&g->vhost->dev,
 426                                config_data, sizeof(struct virtio_gpu_config),
 427                                &local_err);
 428     if (ret) {
 429         error_report_err(local_err);
 430         return;
 431     }
 432
 433     /* those fields are managed by qemu */
 434     vgconfig->num_scanouts = b->virtio_config.num_scanouts;
 435     vgconfig->events_read = b->virtio_config.events_read;
 436     vgconfig->events_clear = b->virtio_config.events_clear;
 437 }
 438
 439 static void
 440 vhost_user_gpu_set_config(VirtIODevice *vdev,
 441                           const uint8_t *config_data)
 442 {
 443     VhostUserGPU *g = VHOST_USER_GPU(vdev);
 444     VirtIOGPUBase *b = VIRTIO_GPU_BASE(vdev);
 445     const struct virtio_gpu_config *vgconfig =
 446         (const struct virtio_gpu_config *)config_data;
 447     int ret;
 448
 449     if (vgconfig->events_clear) {
 450         b->virtio_config.events_read &= ~vgconfig->events_clear;
 451     }
 452
 453     ret = vhost_dev_set_config(&g->vhost->dev, config_data,
 454                                0, sizeof(struct virtio_gpu_config),
 455                                VHOST_SET_CONFIG_TYPE_MASTER);
 456     if (ret) {
 457         error_report("vhost-user-gpu: set device config space failed");
 458         return;
 459     }
 460 }
 461
 462 static void
 463 vhost_user_gpu_set_status(VirtIODevice *vdev, uint8_t val)
 464 {
 465     VhostUserGPU *g = VHOST_USER_GPU(vdev);
 466     Error *err = NULL;
 467
 468     if (val & VIRTIO_CONFIG_S_DRIVER_OK && vdev->vm_running) {
 469         if (!vhost_user_gpu_do_set_socket(g, &err)) {
 470             error_report_err(err);
 471             return;
 472         }
 473         vhost_user_backend_start(g->vhost);
 474     } else {
 475         /* unblock any wait and stop processing */
 476         if (g->vhost_gpu_fd != -1) {
 477             vhost_user_gpu_update_blocked(g, true);
 478             qemu_chr_fe_deinit(&g->vhost_chr, true);
 479             g->vhost_gpu_fd = -1;
 480         }
 481         vhost_user_backend_stop(g->vhost);
 482     }
 483 }
 484
 485 static bool
 486 vhost_user_gpu_guest_notifier_pending(VirtIODevice *vdev, int idx)
 487 {
 488     VhostUserGPU *g = VHOST_USER_GPU(vdev);
 489
 490     /*
 491      * Add the check for configure interrupt, Use VIRTIO_CONFIG_IRQ_IDX -1
 492      * as the Marco of configure interrupt's IDX, If this driver does not
 493      * support, the function will return
 494      */
 495
 496     if (idx == VIRTIO_CONFIG_IRQ_IDX) {
 497         return false;
 498     }
 499     return vhost_virtqueue_pending(&g->vhost->dev, idx);
 500 }
 501
 502 static void
 503 vhost_user_gpu_guest_notifier_mask(VirtIODevice *vdev, int idx, bool mask)
 504 {
 505     VhostUserGPU *g = VHOST_USER_GPU(vdev);
 506
 507     /*
 508      * Add the check for configure interrupt, Use VIRTIO_CONFIG_IRQ_IDX -1
 509      * as the Marco of configure interrupt's IDX, If this driver does not
 510      * support, the function will return
 511      */
 512
 513     if (idx == VIRTIO_CONFIG_IRQ_IDX) {
 514         return;
 515     }
 516     vhost_virtqueue_mask(&g->vhost->dev, vdev, idx, mask);
 517 }
 518
 519 static void
 520 vhost_user_gpu_instance_init(Object *obj)
 521 {
 522     VhostUserGPU *g = VHOST_USER_GPU(obj);
 523
 524     g->vhost = VHOST_USER_BACKEND(object_new(TYPE_VHOST_USER_BACKEND));
 525     object_property_add_alias(obj, "chardev",
 526                               OBJECT(g->vhost), "chardev");
 527 }
 528
 529 static void
 530 vhost_user_gpu_instance_finalize(Object *obj)
 531 {
 532     VhostUserGPU *g = VHOST_USER_GPU(obj);
 533
 534     object_unref(OBJECT(g->vhost));
 535 }
 536
 537 static void
 538 vhost_user_gpu_reset(VirtIODevice *vdev)
 539 {
 540     VhostUserGPU *g = VHOST_USER_GPU(vdev);
 541
 542     virtio_gpu_base_reset(VIRTIO_GPU_BASE(vdev));
 543
 544     vhost_user_backend_stop(g->vhost);
 545 }
 546
 547 static int
 548 vhost_user_gpu_config_change(struct vhost_dev *dev)
 549 {
 550     error_report("vhost-user-gpu: unhandled backend config change");
 551     return -1;
 552 }
 553
 554 static const VhostDevConfigOps config_ops = {
 555     .vhost_dev_config_notifier = vhost_user_gpu_config_change,
 556 };
 557
 558 static void
 559 vhost_user_gpu_device_realize(DeviceState *qdev, Error **errp)
 560 {
 561     VhostUserGPU *g = VHOST_USER_GPU(qdev);
 562     VirtIODevice *vdev = VIRTIO_DEVICE(g);
 563
 564     vhost_dev_set_config_notifier(&g->vhost->dev, &config_ops);
 565     if (vhost_user_backend_dev_init(g->vhost, vdev, 2, errp) < 0) {
 566         return;
 567     }
 568
 569     /* existing backend may send DMABUF, so let's add that requirement */
 570     g->parent_obj.conf.flags |= 1 << VIRTIO_GPU_FLAG_DMABUF_ENABLED;
 571     if (virtio_has_feature(g->vhost->dev.features, VIRTIO_GPU_F_VIRGL)) {
 572         g->parent_obj.conf.flags |= 1 << VIRTIO_GPU_FLAG_VIRGL_ENABLED;
 573     }
 574     if (virtio_has_feature(g->vhost->dev.features, VIRTIO_GPU_F_EDID)) {
 575         g->parent_obj.conf.flags |= 1 << VIRTIO_GPU_FLAG_EDID_ENABLED;
 576     } else {
 577         error_report("EDID requested but the backend doesn't support it.");
 578         g->parent_obj.conf.flags &= ~(1 << VIRTIO_GPU_FLAG_EDID_ENABLED);
 579     }
 580
 581     if (!virtio_gpu_base_device_realize(qdev, NULL, NULL, errp)) {
 582         return;
 583     }
 584
 585     g->vhost_gpu_fd = -1;
 586 }
 587
 588 static struct vhost_dev *vhost_user_gpu_get_vhost(VirtIODevice *vdev)
 589 {
 590     VhostUserGPU *g = VHOST_USER_GPU(vdev);
 591     return &g->vhost->dev;
 592 }
 593
 594 static Property vhost_user_gpu_properties[] = {
 595     VIRTIO_GPU_BASE_PROPERTIES(VhostUserGPU, parent_obj.conf),
 596     DEFINE_PROP_END_OF_LIST(),
 597 };
 598
 599 static void
 600 vhost_user_gpu_class_init(ObjectClass *klass, void *data)
 601 {
 602     DeviceClass *dc = DEVICE_CLASS(klass);
 603     VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
 604     VirtIOGPUBaseClass *vgc = VIRTIO_GPU_BASE_CLASS(klass);
 605
 606     vgc->gl_flushed = vhost_user_gpu_gl_flushed;
 607
 608     vdc->realize = vhost_user_gpu_device_realize;
 609     vdc->reset = vhost_user_gpu_reset;
 610     vdc->set_status   = vhost_user_gpu_set_status;
 611     vdc->guest_notifier_mask = vhost_user_gpu_guest_notifier_mask;
 612     vdc->guest_notifier_pending = vhost_user_gpu_guest_notifier_pending;
 613     vdc->get_config = vhost_user_gpu_get_config;
 614     vdc->set_config = vhost_user_gpu_set_config;
 615     vdc->get_vhost = vhost_user_gpu_get_vhost;
 616
 617     device_class_set_props(dc, vhost_user_gpu_properties);
 618 }
 619
 620 static const TypeInfo vhost_user_gpu_info = {
 621     .name = TYPE_VHOST_USER_GPU,
 622     .parent = TYPE_VIRTIO_GPU_BASE,
 623     .instance_size = sizeof(VhostUserGPU),
 624     .instance_init = vhost_user_gpu_instance_init,
 625     .instance_finalize = vhost_user_gpu_instance_finalize,
 626     .class_init = vhost_user_gpu_class_init,
 627 };
 628 module_obj(TYPE_VHOST_USER_GPU);
 629 module_kconfig(VHOST_USER_GPU);
 630
 631 static void vhost_user_gpu_register_types(void)
 632 {
 633     type_register_static(&vhost_user_gpu_info);
 634 }
 635
 636 type_init(vhost_user_gpu_register_types)