hw/display/virtio-gpu-3d.c

   1 /*
   2  * Virtio GPU Device
   3  *
   4  * Copyright Red Hat, Inc. 2013-2014
   5  *
   6  * Authors:
   7  *     Dave Airlie <airlied@redhat.com>
   8  *     Gerd Hoffmann <kraxel@redhat.com>
   9  *
  10  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  11  * See the COPYING file in the top-level directory.
  12  */
  13
  14 #include "qemu/osdep.h"
  15 #include "qemu-common.h"
  16 #include "qemu/iov.h"
  17 #include "trace.h"
  18 #include "hw/virtio/virtio.h"
  19 #include "hw/virtio/virtio-gpu.h"
  20 #include "qapi/error.h"
  21
  22 #ifdef CONFIG_VIRGL
  23
  24 #include "virglrenderer.h"
  25
  26 static struct virgl_renderer_callbacks virtio_gpu_3d_cbs;
  27
  28 static void virgl_cmd_create_resource_2d(VirtIOGPU *g,
  29                                          struct virtio_gpu_ctrl_command *cmd)
  30 {
  31     struct virtio_gpu_resource_create_2d c2d;
  32     struct virgl_renderer_resource_create_args args;
  33
  34     VIRTIO_GPU_FILL_CMD(c2d);
  35     trace_virtio_gpu_cmd_res_create_2d(c2d.resource_id, c2d.format,
  36                                        c2d.width, c2d.height);
  37
  38     args.handle = c2d.resource_id;
  39     args.target = 2;
  40     args.format = c2d.format;
  41     args.bind = (1 << 1);
  42     args.width = c2d.width;
  43     args.height = c2d.height;
  44     args.depth = 1;
  45     args.array_size = 1;
  46     args.last_level = 0;
  47     args.nr_samples = 0;
  48     args.flags = VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP;
  49     virgl_renderer_resource_create(&args, NULL, 0);
  50 }
  51
  52 static void virgl_cmd_create_resource_3d(VirtIOGPU *g,
  53                                          struct virtio_gpu_ctrl_command *cmd)
  54 {
  55     struct virtio_gpu_resource_create_3d c3d;
  56     struct virgl_renderer_resource_create_args args;
  57
  58     VIRTIO_GPU_FILL_CMD(c3d);
  59     trace_virtio_gpu_cmd_res_create_3d(c3d.resource_id, c3d.format,
  60                                        c3d.width, c3d.height, c3d.depth);
  61
  62     args.handle = c3d.resource_id;
  63     args.target = c3d.target;
  64     args.format = c3d.format;
  65     args.bind = c3d.bind;
  66     args.width = c3d.width;
  67     args.height = c3d.height;
  68     args.depth = c3d.depth;
  69     args.array_size = c3d.array_size;
  70     args.last_level = c3d.last_level;
  71     args.nr_samples = c3d.nr_samples;
  72     args.flags = c3d.flags;
  73     virgl_renderer_resource_create(&args, NULL, 0);
  74 }
  75
  76 static void virgl_cmd_resource_unref(VirtIOGPU *g,
  77                                      struct virtio_gpu_ctrl_command *cmd)
  78 {
  79     struct virtio_gpu_resource_unref unref;
  80
  81     VIRTIO_GPU_FILL_CMD(unref);
  82     trace_virtio_gpu_cmd_res_unref(unref.resource_id);
  83
  84     virgl_renderer_resource_unref(unref.resource_id);
  85 }
  86
  87 static void virgl_cmd_context_create(VirtIOGPU *g,
  88                                      struct virtio_gpu_ctrl_command *cmd)
  89 {
  90     struct virtio_gpu_ctx_create cc;
  91
  92     VIRTIO_GPU_FILL_CMD(cc);
  93     trace_virtio_gpu_cmd_ctx_create(cc.hdr.ctx_id,
  94                                     cc.debug_name);
  95
  96     virgl_renderer_context_create(cc.hdr.ctx_id, cc.nlen,
  97                                   cc.debug_name);
  98 }
  99
 100 static void virgl_cmd_context_destroy(VirtIOGPU *g,
 101                                       struct virtio_gpu_ctrl_command *cmd)
 102 {
 103     struct virtio_gpu_ctx_destroy cd;
 104
 105     VIRTIO_GPU_FILL_CMD(cd);
 106     trace_virtio_gpu_cmd_ctx_destroy(cd.hdr.ctx_id);
 107
 108     virgl_renderer_context_destroy(cd.hdr.ctx_id);
 109 }
 110
 111 static void virtio_gpu_rect_update(VirtIOGPU *g, int idx, int x, int y,
 112                                 int width, int height)
 113 {
 114     if (!g->scanout[idx].con) {
 115         return;
 116     }
 117
 118     dpy_gl_update(g->scanout[idx].con, x, y, width, height);
 119 }
 120
 121 static void virgl_cmd_resource_flush(VirtIOGPU *g,
 122                                      struct virtio_gpu_ctrl_command *cmd)
 123 {
 124     struct virtio_gpu_resource_flush rf;
 125     int i;
 126
 127     VIRTIO_GPU_FILL_CMD(rf);
 128     trace_virtio_gpu_cmd_res_flush(rf.resource_id,
 129                                    rf.r.width, rf.r.height, rf.r.x, rf.r.y);
 130
 131     for (i = 0; i < g->conf.max_outputs; i++) {
 132         if (g->scanout[i].resource_id != rf.resource_id) {
 133             continue;
 134         }
 135         virtio_gpu_rect_update(g, i, rf.r.x, rf.r.y, rf.r.width, rf.r.height);
 136     }
 137 }
 138
 139 static void virgl_cmd_set_scanout(VirtIOGPU *g,
 140                                   struct virtio_gpu_ctrl_command *cmd)
 141 {
 142     struct virtio_gpu_set_scanout ss;
 143     struct virgl_renderer_resource_info info;
 144     int ret;
 145
 146     VIRTIO_GPU_FILL_CMD(ss);
 147     trace_virtio_gpu_cmd_set_scanout(ss.scanout_id, ss.resource_id,
 148                                      ss.r.width, ss.r.height, ss.r.x, ss.r.y);
 149
 150     if (ss.scanout_id >= g->conf.max_outputs) {
 151         qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d",
 152                       __func__, ss.scanout_id);
 153         cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID;
 154         return;
 155     }
 156     g->enable = 1;
 157
 158     memset(&info, 0, sizeof(info));
 159
 160     if (ss.resource_id && ss.r.width && ss.r.height) {
 161         ret = virgl_renderer_resource_get_info(ss.resource_id, &info);
 162         if (ret == -1) {
 163             qemu_log_mask(LOG_GUEST_ERROR,
 164                           "%s: illegal resource specified %d\n",
 165                           __func__, ss.resource_id);
 166             cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
 167             return;
 168         }
 169         qemu_console_resize(g->scanout[ss.scanout_id].con,
 170                             ss.r.width, ss.r.height);
 171         virgl_renderer_force_ctx_0();
 172         dpy_gl_scanout(g->scanout[ss.scanout_id].con, info.tex_id,
 173                        info.flags & 1 /* FIXME: Y_0_TOP */,
 174                        ss.r.x, ss.r.y, ss.r.width, ss.r.height);
 175     } else {
 176         if (ss.scanout_id != 0) {
 177             dpy_gfx_replace_surface(g->scanout[ss.scanout_id].con, NULL);
 178         }
 179         dpy_gl_scanout(g->scanout[ss.scanout_id].con, 0, false,
 180                        0, 0, 0, 0);
 181     }
 182     g->scanout[ss.scanout_id].resource_id = ss.resource_id;
 183 }
 184
 185 static void virgl_cmd_submit_3d(VirtIOGPU *g,
 186                                 struct virtio_gpu_ctrl_command *cmd)
 187 {
 188     struct virtio_gpu_cmd_submit cs;
 189     void *buf;
 190     size_t s;
 191
 192     VIRTIO_GPU_FILL_CMD(cs);
 193     trace_virtio_gpu_cmd_ctx_submit(cs.hdr.ctx_id, cs.size);
 194
 195     buf = g_malloc(cs.size);
 196     s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num,
 197                    sizeof(cs), buf, cs.size);
 198     if (s != cs.size) {
 199         qemu_log_mask(LOG_GUEST_ERROR, "%s: size mismatch (%zd/%d)",
 200                       __func__, s, cs.size);
 201         cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
 202         goto out;
 203     }
 204
 205     if (virtio_gpu_stats_enabled(g->conf)) {
 206         g->stats.req_3d++;
 207         g->stats.bytes_3d += cs.size;
 208     }
 209
 210     virgl_renderer_submit_cmd(buf, cs.hdr.ctx_id, cs.size / 4);
 211
 212 out:
 213     g_free(buf);
 214 }
 215
 216 static void virgl_cmd_transfer_to_host_2d(VirtIOGPU *g,
 217                                           struct virtio_gpu_ctrl_command *cmd)
 218 {
 219     struct virtio_gpu_transfer_to_host_2d t2d;
 220     struct virtio_gpu_box box;
 221
 222     VIRTIO_GPU_FILL_CMD(t2d);
 223     trace_virtio_gpu_cmd_res_xfer_toh_2d(t2d.resource_id);
 224
 225     box.x = t2d.r.x;
 226     box.y = t2d.r.y;
 227     box.z = 0;
 228     box.w = t2d.r.width;
 229     box.h = t2d.r.height;
 230     box.d = 1;
 231
 232     virgl_renderer_transfer_write_iov(t2d.resource_id,
 233                                       0,
 234                                       0,
 235                                       0,
 236                                       0,
 237                                       (struct virgl_box *)&box,
 238                                       t2d.offset, NULL, 0);
 239 }
 240
 241 static void virgl_cmd_transfer_to_host_3d(VirtIOGPU *g,
 242                                           struct virtio_gpu_ctrl_command *cmd)
 243 {
 244     struct virtio_gpu_transfer_host_3d t3d;
 245
 246     VIRTIO_GPU_FILL_CMD(t3d);
 247     trace_virtio_gpu_cmd_res_xfer_toh_3d(t3d.resource_id);
 248
 249     virgl_renderer_transfer_write_iov(t3d.resource_id,
 250                                       t3d.hdr.ctx_id,
 251                                       t3d.level,
 252                                       t3d.stride,
 253                                       t3d.layer_stride,
 254                                       (struct virgl_box *)&t3d.box,
 255                                       t3d.offset, NULL, 0);
 256 }
 257
 258 static void
 259 virgl_cmd_transfer_from_host_3d(VirtIOGPU *g,
 260                                 struct virtio_gpu_ctrl_command *cmd)
 261 {
 262     struct virtio_gpu_transfer_host_3d tf3d;
 263
 264     VIRTIO_GPU_FILL_CMD(tf3d);
 265     trace_virtio_gpu_cmd_res_xfer_fromh_3d(tf3d.resource_id);
 266
 267     virgl_renderer_transfer_read_iov(tf3d.resource_id,
 268                                      tf3d.hdr.ctx_id,
 269                                      tf3d.level,
 270                                      tf3d.stride,
 271                                      tf3d.layer_stride,
 272                                      (struct virgl_box *)&tf3d.box,
 273                                      tf3d.offset, NULL, 0);
 274 }
 275
 276
 277 static void virgl_resource_attach_backing(VirtIOGPU *g,
 278                                           struct virtio_gpu_ctrl_command *cmd)
 279 {
 280     struct virtio_gpu_resource_attach_backing att_rb;
 281     struct iovec *res_iovs;
 282     int ret;
 283
 284     VIRTIO_GPU_FILL_CMD(att_rb);
 285     trace_virtio_gpu_cmd_res_back_attach(att_rb.resource_id);
 286
 287     ret = virtio_gpu_create_mapping_iov(&att_rb, cmd, NULL, &res_iovs);
 288     if (ret != 0) {
 289         cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
 290         return;
 291     }
 292
 293     virgl_renderer_resource_attach_iov(att_rb.resource_id,
 294                                        res_iovs, att_rb.nr_entries);
 295 }
 296
 297 static void virgl_resource_detach_backing(VirtIOGPU *g,
 298                                           struct virtio_gpu_ctrl_command *cmd)
 299 {
 300     struct virtio_gpu_resource_detach_backing detach_rb;
 301     struct iovec *res_iovs = NULL;
 302     int num_iovs = 0;
 303
 304     VIRTIO_GPU_FILL_CMD(detach_rb);
 305     trace_virtio_gpu_cmd_res_back_detach(detach_rb.resource_id);
 306
 307     virgl_renderer_resource_detach_iov(detach_rb.resource_id,
 308                                        &res_iovs,
 309                                        &num_iovs);
 310     if (res_iovs == NULL || num_iovs == 0) {
 311         return;
 312     }
 313     virtio_gpu_cleanup_mapping_iov(res_iovs, num_iovs);
 314 }
 315
 316
 317 static void virgl_cmd_ctx_attach_resource(VirtIOGPU *g,
 318                                           struct virtio_gpu_ctrl_command *cmd)
 319 {
 320     struct virtio_gpu_ctx_resource att_res;
 321
 322     VIRTIO_GPU_FILL_CMD(att_res);
 323     trace_virtio_gpu_cmd_ctx_res_attach(att_res.hdr.ctx_id,
 324                                         att_res.resource_id);
 325
 326     virgl_renderer_ctx_attach_resource(att_res.hdr.ctx_id, att_res.resource_id);
 327 }
 328
 329 static void virgl_cmd_ctx_detach_resource(VirtIOGPU *g,
 330                                           struct virtio_gpu_ctrl_command *cmd)
 331 {
 332     struct virtio_gpu_ctx_resource det_res;
 333
 334     VIRTIO_GPU_FILL_CMD(det_res);
 335     trace_virtio_gpu_cmd_ctx_res_detach(det_res.hdr.ctx_id,
 336                                         det_res.resource_id);
 337
 338     virgl_renderer_ctx_detach_resource(det_res.hdr.ctx_id, det_res.resource_id);
 339 }
 340
 341 static void virgl_cmd_get_capset_info(VirtIOGPU *g,
 342                                       struct virtio_gpu_ctrl_command *cmd)
 343 {
 344     struct virtio_gpu_get_capset_info info;
 345     struct virtio_gpu_resp_capset_info resp;
 346
 347     VIRTIO_GPU_FILL_CMD(info);
 348
 349     if (info.capset_index == 0) {
 350         resp.capset_id = VIRTIO_GPU_CAPSET_VIRGL;
 351         virgl_renderer_get_cap_set(resp.capset_id,
 352                                    &resp.capset_max_version,
 353                                    &resp.capset_max_size);
 354     } else {
 355         resp.capset_max_version = 0;
 356         resp.capset_max_size = 0;
 357     }
 358     resp.hdr.type = VIRTIO_GPU_RESP_OK_CAPSET_INFO;
 359     virtio_gpu_ctrl_response(g, cmd, &resp.hdr, sizeof(resp));
 360 }
 361
 362 static void virgl_cmd_get_capset(VirtIOGPU *g,
 363                                  struct virtio_gpu_ctrl_command *cmd)
 364 {
 365     struct virtio_gpu_get_capset gc;
 366     struct virtio_gpu_resp_capset *resp;
 367     uint32_t max_ver, max_size;
 368     VIRTIO_GPU_FILL_CMD(gc);
 369
 370     virgl_renderer_get_cap_set(gc.capset_id, &max_ver,
 371                                &max_size);
 372     resp = g_malloc(sizeof(*resp) + max_size);
 373
 374     resp->hdr.type = VIRTIO_GPU_RESP_OK_CAPSET;
 375     virgl_renderer_fill_caps(gc.capset_id,
 376                              gc.capset_version,
 377                              (void *)resp->capset_data);
 378     virtio_gpu_ctrl_response(g, cmd, &resp->hdr, sizeof(*resp) + max_size);
 379     g_free(resp);
 380 }
 381
 382 void virtio_gpu_virgl_process_cmd(VirtIOGPU *g,
 383                                       struct virtio_gpu_ctrl_command *cmd)
 384 {
 385     VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr);
 386
 387     cmd->waiting = g->renderer_blocked;
 388     if (cmd->waiting) {
 389         return;
 390     }
 391
 392     virgl_renderer_force_ctx_0();
 393     switch (cmd->cmd_hdr.type) {
 394     case VIRTIO_GPU_CMD_CTX_CREATE:
 395         virgl_cmd_context_create(g, cmd);
 396         break;
 397     case VIRTIO_GPU_CMD_CTX_DESTROY:
 398         virgl_cmd_context_destroy(g, cmd);
 399         break;
 400     case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D:
 401         virgl_cmd_create_resource_2d(g, cmd);
 402         break;
 403     case VIRTIO_GPU_CMD_RESOURCE_CREATE_3D:
 404         virgl_cmd_create_resource_3d(g, cmd);
 405         break;
 406     case VIRTIO_GPU_CMD_SUBMIT_3D:
 407         virgl_cmd_submit_3d(g, cmd);
 408         break;
 409     case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D:
 410         virgl_cmd_transfer_to_host_2d(g, cmd);
 411         break;
 412     case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D:
 413         virgl_cmd_transfer_to_host_3d(g, cmd);
 414         break;
 415     case VIRTIO_GPU_CMD_TRANSFER_FROM_HOST_3D:
 416         virgl_cmd_transfer_from_host_3d(g, cmd);
 417         break;
 418     case VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING:
 419         virgl_resource_attach_backing(g, cmd);
 420         break;
 421     case VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING:
 422         virgl_resource_detach_backing(g, cmd);
 423         break;
 424     case VIRTIO_GPU_CMD_SET_SCANOUT:
 425         virgl_cmd_set_scanout(g, cmd);
 426         break;
 427     case VIRTIO_GPU_CMD_RESOURCE_FLUSH:
 428         virgl_cmd_resource_flush(g, cmd);
 429        break;
 430     case VIRTIO_GPU_CMD_RESOURCE_UNREF:
 431         virgl_cmd_resource_unref(g, cmd);
 432         break;
 433     case VIRTIO_GPU_CMD_CTX_ATTACH_RESOURCE:
 434         /* TODO add security */
 435         virgl_cmd_ctx_attach_resource(g, cmd);
 436         break;
 437     case VIRTIO_GPU_CMD_CTX_DETACH_RESOURCE:
 438         /* TODO add security */
 439         virgl_cmd_ctx_detach_resource(g, cmd);
 440         break;
 441     case VIRTIO_GPU_CMD_GET_CAPSET_INFO:
 442         virgl_cmd_get_capset_info(g, cmd);
 443         break;
 444     case VIRTIO_GPU_CMD_GET_CAPSET:
 445         virgl_cmd_get_capset(g, cmd);
 446         break;
 447
 448     case VIRTIO_GPU_CMD_GET_DISPLAY_INFO:
 449         virtio_gpu_get_display_info(g, cmd);
 450         break;
 451     default:
 452         cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
 453         break;
 454     }
 455
 456     if (cmd->finished) {
 457         return;
 458     }
 459     if (cmd->error) {
 460         fprintf(stderr, "%s: ctrl 0x%x, error 0x%x\n", __func__,
 461                 cmd->cmd_hdr.type, cmd->error);
 462         virtio_gpu_ctrl_response_nodata(g, cmd, cmd->error);
 463         return;
 464     }
 465     if (!(cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_FENCE)) {
 466         virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA);
 467         return;
 468     }
 469
 470     trace_virtio_gpu_fence_ctrl(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type);
 471     virgl_renderer_create_fence(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type);
 472 }
 473
 474 static void virgl_write_fence(void *opaque, uint32_t fence)
 475 {
 476     VirtIOGPU *g = opaque;
 477     struct virtio_gpu_ctrl_command *cmd, *tmp;
 478
 479     QTAILQ_FOREACH_SAFE(cmd, &g->fenceq, next, tmp) {
 480         /*
 481          * the guest can end up emitting fences out of order
 482          * so we should check all fenced cmds not just the first one.
 483          */
 484         if (cmd->cmd_hdr.fence_id > fence) {
 485             continue;
 486         }
 487         trace_virtio_gpu_fence_resp(cmd->cmd_hdr.fence_id);
 488         virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA);
 489         QTAILQ_REMOVE(&g->fenceq, cmd, next);
 490         g_free(cmd);
 491         g->inflight--;
 492         if (virtio_gpu_stats_enabled(g->conf)) {
 493             fprintf(stderr, "inflight: %3d (-)\r", g->inflight);
 494         }
 495     }
 496 }
 497
 498 static virgl_renderer_gl_context
 499 virgl_create_context(void *opaque, int scanout_idx,
 500                      struct virgl_renderer_gl_ctx_param *params)
 501 {
 502     VirtIOGPU *g = opaque;
 503     QEMUGLContext ctx;
 504     QEMUGLParams qparams;
 505
 506     qparams.major_ver = params->major_ver;
 507     qparams.minor_ver = params->minor_ver;
 508
 509     ctx = dpy_gl_ctx_create(g->scanout[scanout_idx].con, &qparams);
 510     return (virgl_renderer_gl_context)ctx;
 511 }
 512
 513 static void virgl_destroy_context(void *opaque, virgl_renderer_gl_context ctx)
 514 {
 515     VirtIOGPU *g = opaque;
 516     QEMUGLContext qctx = (QEMUGLContext)ctx;
 517
 518     dpy_gl_ctx_destroy(g->scanout[0].con, qctx);
 519 }
 520
 521 static int virgl_make_context_current(void *opaque, int scanout_idx,
 522                                       virgl_renderer_gl_context ctx)
 523 {
 524     VirtIOGPU *g = opaque;
 525     QEMUGLContext qctx = (QEMUGLContext)ctx;
 526
 527     return dpy_gl_ctx_make_current(g->scanout[scanout_idx].con, qctx);
 528 }
 529
 530 static struct virgl_renderer_callbacks virtio_gpu_3d_cbs = {
 531     .version             = 1,
 532     .write_fence         = virgl_write_fence,
 533     .create_gl_context   = virgl_create_context,
 534     .destroy_gl_context  = virgl_destroy_context,
 535     .make_current        = virgl_make_context_current,
 536 };
 537
 538 static void virtio_gpu_print_stats(void *opaque)
 539 {
 540     VirtIOGPU *g = opaque;
 541
 542     if (g->stats.requests) {
 543         fprintf(stderr, "stats: vq req %4d, %3d -- 3D %4d (%5d)\n",
 544                 g->stats.requests,
 545                 g->stats.max_inflight,
 546                 g->stats.req_3d,
 547                 g->stats.bytes_3d);
 548         g->stats.requests     = 0;
 549         g->stats.max_inflight = 0;
 550         g->stats.req_3d       = 0;
 551         g->stats.bytes_3d     = 0;
 552     } else {
 553         fprintf(stderr, "stats: idle\r");
 554     }
 555     timer_mod(g->print_stats, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 1000);
 556 }
 557
 558 static void virtio_gpu_fence_poll(void *opaque)
 559 {
 560     VirtIOGPU *g = opaque;
 561
 562     virgl_renderer_poll();
 563     virtio_gpu_process_cmdq(g);
 564     if (!QTAILQ_EMPTY(&g->cmdq) || !QTAILQ_EMPTY(&g->fenceq)) {
 565         timer_mod(g->fence_poll, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 10);
 566     }
 567 }
 568
 569 void virtio_gpu_virgl_fence_poll(VirtIOGPU *g)
 570 {
 571     virtio_gpu_fence_poll(g);
 572 }
 573
 574 void virtio_gpu_virgl_reset(VirtIOGPU *g)
 575 {
 576     int i;
 577
 578     /* virgl_renderer_reset() ??? */
 579     for (i = 0; i < g->conf.max_outputs; i++) {
 580         if (i != 0) {
 581             dpy_gfx_replace_surface(g->scanout[i].con, NULL);
 582         }
 583         dpy_gl_scanout(g->scanout[i].con, 0, false, 0, 0, 0, 0);
 584     }
 585 }
 586
 587 int virtio_gpu_virgl_init(VirtIOGPU *g)
 588 {
 589     int ret;
 590
 591     ret = virgl_renderer_init(g, 0, &virtio_gpu_3d_cbs);
 592     if (ret != 0) {
 593         return ret;
 594     }
 595
 596     g->fence_poll = timer_new_ms(QEMU_CLOCK_VIRTUAL,
 597                                  virtio_gpu_fence_poll, g);
 598
 599     if (virtio_gpu_stats_enabled(g->conf)) {
 600         g->print_stats = timer_new_ms(QEMU_CLOCK_VIRTUAL,
 601                                       virtio_gpu_print_stats, g);
 602         timer_mod(g->print_stats, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 1000);
 603     }
 604     return 0;
 605 }
 606
 607 #endif /* CONFIG_VIRGL */