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 <[email protected]>
   8  *     Gerd Hoffmann <[email protected]>
   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                        info.width, info.height,
 175                        ss.r.x, ss.r.y, ss.r.width, ss.r.height);
 176     } else {
 177         if (ss.scanout_id != 0) {
 178             dpy_gfx_replace_surface(g->scanout[ss.scanout_id].con, NULL);
 179         }
 180         dpy_gl_scanout(g->scanout[ss.scanout_id].con, 0, false,
 181                        0, 0, 0, 0, 0, 0);
 182     }
 183     g->scanout[ss.scanout_id].resource_id = ss.resource_id;
 184 }
 185
 186 static void virgl_cmd_submit_3d(VirtIOGPU *g,
 187                                 struct virtio_gpu_ctrl_command *cmd)
 188 {
 189     struct virtio_gpu_cmd_submit cs;
 190     void *buf;
 191     size_t s;
 192
 193     VIRTIO_GPU_FILL_CMD(cs);
 194     trace_virtio_gpu_cmd_ctx_submit(cs.hdr.ctx_id, cs.size);
 195
 196     buf = g_malloc(cs.size);
 197     s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num,
 198                    sizeof(cs), buf, cs.size);
 199     if (s != cs.size) {
 200         qemu_log_mask(LOG_GUEST_ERROR, "%s: size mismatch (%zd/%d)",
 201                       __func__, s, cs.size);
 202         cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
 203         goto out;
 204     }
 205
 206     if (virtio_gpu_stats_enabled(g->conf)) {
 207         g->stats.req_3d++;
 208         g->stats.bytes_3d += cs.size;
 209     }
 210
 211     virgl_renderer_submit_cmd(buf, cs.hdr.ctx_id, cs.size / 4);
 212
 213 out:
 214     g_free(buf);
 215 }
 216
 217 static void virgl_cmd_transfer_to_host_2d(VirtIOGPU *g,
 218                                           struct virtio_gpu_ctrl_command *cmd)
 219 {
 220     struct virtio_gpu_transfer_to_host_2d t2d;
 221     struct virtio_gpu_box box;
 222
 223     VIRTIO_GPU_FILL_CMD(t2d);
 224     trace_virtio_gpu_cmd_res_xfer_toh_2d(t2d.resource_id);
 225
 226     box.x = t2d.r.x;
 227     box.y = t2d.r.y;
 228     box.z = 0;
 229     box.w = t2d.r.width;
 230     box.h = t2d.r.height;
 231     box.d = 1;
 232
 233     virgl_renderer_transfer_write_iov(t2d.resource_id,
 234                                       0,
 235                                       0,
 236                                       0,
 237                                       0,
 238                                       (struct virgl_box *)&box,
 239                                       t2d.offset, NULL, 0);
 240 }
 241
 242 static void virgl_cmd_transfer_to_host_3d(VirtIOGPU *g,
 243                                           struct virtio_gpu_ctrl_command *cmd)
 244 {
 245     struct virtio_gpu_transfer_host_3d t3d;
 246
 247     VIRTIO_GPU_FILL_CMD(t3d);
 248     trace_virtio_gpu_cmd_res_xfer_toh_3d(t3d.resource_id);
 249
 250     virgl_renderer_transfer_write_iov(t3d.resource_id,
 251                                       t3d.hdr.ctx_id,
 252                                       t3d.level,
 253                                       t3d.stride,
 254                                       t3d.layer_stride,
 255                                       (struct virgl_box *)&t3d.box,
 256                                       t3d.offset, NULL, 0);
 257 }
 258
 259 static void
 260 virgl_cmd_transfer_from_host_3d(VirtIOGPU *g,
 261                                 struct virtio_gpu_ctrl_command *cmd)
 262 {
 263     struct virtio_gpu_transfer_host_3d tf3d;
 264
 265     VIRTIO_GPU_FILL_CMD(tf3d);
 266     trace_virtio_gpu_cmd_res_xfer_fromh_3d(tf3d.resource_id);
 267
 268     virgl_renderer_transfer_read_iov(tf3d.resource_id,
 269                                      tf3d.hdr.ctx_id,
 270                                      tf3d.level,
 271                                      tf3d.stride,
 272                                      tf3d.layer_stride,
 273                                      (struct virgl_box *)&tf3d.box,
 274                                      tf3d.offset, NULL, 0);
 275 }
 276
 277
 278 static void virgl_resource_attach_backing(VirtIOGPU *g,
 279                                           struct virtio_gpu_ctrl_command *cmd)
 280 {
 281     struct virtio_gpu_resource_attach_backing att_rb;
 282     struct iovec *res_iovs;
 283     int ret;
 284
 285     VIRTIO_GPU_FILL_CMD(att_rb);
 286     trace_virtio_gpu_cmd_res_back_attach(att_rb.resource_id);
 287
 288     ret = virtio_gpu_create_mapping_iov(&att_rb, cmd, NULL, &res_iovs);
 289     if (ret != 0) {
 290         cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
 291         return;
 292     }
 293
 294     ret = virgl_renderer_resource_attach_iov(att_rb.resource_id,
 295                                              res_iovs, att_rb.nr_entries);
 296
 297     if (ret != 0)
 298         virtio_gpu_cleanup_mapping_iov(res_iovs, att_rb.nr_entries);
 299 }
 300
 301 static void virgl_resource_detach_backing(VirtIOGPU *g,
 302                                           struct virtio_gpu_ctrl_command *cmd)
 303 {
 304     struct virtio_gpu_resource_detach_backing detach_rb;
 305     struct iovec *res_iovs = NULL;
 306     int num_iovs = 0;
 307
 308     VIRTIO_GPU_FILL_CMD(detach_rb);
 309     trace_virtio_gpu_cmd_res_back_detach(detach_rb.resource_id);
 310
 311     virgl_renderer_resource_detach_iov(detach_rb.resource_id,
 312                                        &res_iovs,
 313                                        &num_iovs);
 314     if (res_iovs == NULL || num_iovs == 0) {
 315         return;
 316     }
 317     virtio_gpu_cleanup_mapping_iov(res_iovs, num_iovs);
 318 }
 319
 320
 321 static void virgl_cmd_ctx_attach_resource(VirtIOGPU *g,
 322                                           struct virtio_gpu_ctrl_command *cmd)
 323 {
 324     struct virtio_gpu_ctx_resource att_res;
 325
 326     VIRTIO_GPU_FILL_CMD(att_res);
 327     trace_virtio_gpu_cmd_ctx_res_attach(att_res.hdr.ctx_id,
 328                                         att_res.resource_id);
 329
 330     virgl_renderer_ctx_attach_resource(att_res.hdr.ctx_id, att_res.resource_id);
 331 }
 332
 333 static void virgl_cmd_ctx_detach_resource(VirtIOGPU *g,
 334                                           struct virtio_gpu_ctrl_command *cmd)
 335 {
 336     struct virtio_gpu_ctx_resource det_res;
 337
 338     VIRTIO_GPU_FILL_CMD(det_res);
 339     trace_virtio_gpu_cmd_ctx_res_detach(det_res.hdr.ctx_id,
 340                                         det_res.resource_id);
 341
 342     virgl_renderer_ctx_detach_resource(det_res.hdr.ctx_id, det_res.resource_id);
 343 }
 344
 345 static void virgl_cmd_get_capset_info(VirtIOGPU *g,
 346                                       struct virtio_gpu_ctrl_command *cmd)
 347 {
 348     struct virtio_gpu_get_capset_info info;
 349     struct virtio_gpu_resp_capset_info resp;
 350
 351     VIRTIO_GPU_FILL_CMD(info);
 352
 353     memset(&resp, 0, sizeof(resp));
 354     if (info.capset_index == 0) {
 355         resp.capset_id = VIRTIO_GPU_CAPSET_VIRGL;
 356         virgl_renderer_get_cap_set(resp.capset_id,
 357                                    &resp.capset_max_version,
 358                                    &resp.capset_max_size);
 359     } else {
 360         resp.capset_max_version = 0;
 361         resp.capset_max_size = 0;
 362     }
 363     resp.hdr.type = VIRTIO_GPU_RESP_OK_CAPSET_INFO;
 364     virtio_gpu_ctrl_response(g, cmd, &resp.hdr, sizeof(resp));
 365 }
 366
 367 static void virgl_cmd_get_capset(VirtIOGPU *g,
 368                                  struct virtio_gpu_ctrl_command *cmd)
 369 {
 370     struct virtio_gpu_get_capset gc;
 371     struct virtio_gpu_resp_capset *resp;
 372     uint32_t max_ver, max_size;
 373     VIRTIO_GPU_FILL_CMD(gc);
 374
 375     virgl_renderer_get_cap_set(gc.capset_id, &max_ver,
 376                                &max_size);
 377     if (!max_size) {
 378         cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
 379         return;
 380     }
 381
 382     resp = g_malloc(sizeof(*resp) + max_size);
 383     resp->hdr.type = VIRTIO_GPU_RESP_OK_CAPSET;
 384     virgl_renderer_fill_caps(gc.capset_id,
 385                              gc.capset_version,
 386                              (void *)resp->capset_data);
 387     virtio_gpu_ctrl_response(g, cmd, &resp->hdr, sizeof(*resp) + max_size);
 388     g_free(resp);
 389 }
 390
 391 void virtio_gpu_virgl_process_cmd(VirtIOGPU *g,
 392                                       struct virtio_gpu_ctrl_command *cmd)
 393 {
 394     VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr);
 395
 396     cmd->waiting = g->renderer_blocked;
 397     if (cmd->waiting) {
 398         return;
 399     }
 400
 401     virgl_renderer_force_ctx_0();
 402     switch (cmd->cmd_hdr.type) {
 403     case VIRTIO_GPU_CMD_CTX_CREATE:
 404         virgl_cmd_context_create(g, cmd);
 405         break;
 406     case VIRTIO_GPU_CMD_CTX_DESTROY:
 407         virgl_cmd_context_destroy(g, cmd);
 408         break;
 409     case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D:
 410         virgl_cmd_create_resource_2d(g, cmd);
 411         break;
 412     case VIRTIO_GPU_CMD_RESOURCE_CREATE_3D:
 413         virgl_cmd_create_resource_3d(g, cmd);
 414         break;
 415     case VIRTIO_GPU_CMD_SUBMIT_3D:
 416         virgl_cmd_submit_3d(g, cmd);
 417         break;
 418     case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D:
 419         virgl_cmd_transfer_to_host_2d(g, cmd);
 420         break;
 421     case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D:
 422         virgl_cmd_transfer_to_host_3d(g, cmd);
 423         break;
 424     case VIRTIO_GPU_CMD_TRANSFER_FROM_HOST_3D:
 425         virgl_cmd_transfer_from_host_3d(g, cmd);
 426         break;
 427     case VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING:
 428         virgl_resource_attach_backing(g, cmd);
 429         break;
 430     case VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING:
 431         virgl_resource_detach_backing(g, cmd);
 432         break;
 433     case VIRTIO_GPU_CMD_SET_SCANOUT:
 434         virgl_cmd_set_scanout(g, cmd);
 435         break;
 436     case VIRTIO_GPU_CMD_RESOURCE_FLUSH:
 437         virgl_cmd_resource_flush(g, cmd);
 438        break;
 439     case VIRTIO_GPU_CMD_RESOURCE_UNREF:
 440         virgl_cmd_resource_unref(g, cmd);
 441         break;
 442     case VIRTIO_GPU_CMD_CTX_ATTACH_RESOURCE:
 443         /* TODO add security */
 444         virgl_cmd_ctx_attach_resource(g, cmd);
 445         break;
 446     case VIRTIO_GPU_CMD_CTX_DETACH_RESOURCE:
 447         /* TODO add security */
 448         virgl_cmd_ctx_detach_resource(g, cmd);
 449         break;
 450     case VIRTIO_GPU_CMD_GET_CAPSET_INFO:
 451         virgl_cmd_get_capset_info(g, cmd);
 452         break;
 453     case VIRTIO_GPU_CMD_GET_CAPSET:
 454         virgl_cmd_get_capset(g, cmd);
 455         break;
 456
 457     case VIRTIO_GPU_CMD_GET_DISPLAY_INFO:
 458         virtio_gpu_get_display_info(g, cmd);
 459         break;
 460     default:
 461         cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
 462         break;
 463     }
 464
 465     if (cmd->finished) {
 466         return;
 467     }
 468     if (cmd->error) {
 469         fprintf(stderr, "%s: ctrl 0x%x, error 0x%x\n", __func__,
 470                 cmd->cmd_hdr.type, cmd->error);
 471         virtio_gpu_ctrl_response_nodata(g, cmd, cmd->error);
 472         return;
 473     }
 474     if (!(cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_FENCE)) {
 475         virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA);
 476         return;
 477     }
 478
 479     trace_virtio_gpu_fence_ctrl(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type);
 480     virgl_renderer_create_fence(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type);
 481 }
 482
 483 static void virgl_write_fence(void *opaque, uint32_t fence)
 484 {
 485     VirtIOGPU *g = opaque;
 486     struct virtio_gpu_ctrl_command *cmd, *tmp;
 487
 488     QTAILQ_FOREACH_SAFE(cmd, &g->fenceq, next, tmp) {
 489         /*
 490          * the guest can end up emitting fences out of order
 491          * so we should check all fenced cmds not just the first one.
 492          */
 493         if (cmd->cmd_hdr.fence_id > fence) {
 494             continue;
 495         }
 496         trace_virtio_gpu_fence_resp(cmd->cmd_hdr.fence_id);
 497         virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA);
 498         QTAILQ_REMOVE(&g->fenceq, cmd, next);
 499         g_free(cmd);
 500         g->inflight--;
 501         if (virtio_gpu_stats_enabled(g->conf)) {
 502             fprintf(stderr, "inflight: %3d (-)\r", g->inflight);
 503         }
 504     }
 505 }
 506
 507 static virgl_renderer_gl_context
 508 virgl_create_context(void *opaque, int scanout_idx,
 509                      struct virgl_renderer_gl_ctx_param *params)
 510 {
 511     VirtIOGPU *g = opaque;
 512     QEMUGLContext ctx;
 513     QEMUGLParams qparams;
 514
 515     qparams.major_ver = params->major_ver;
 516     qparams.minor_ver = params->minor_ver;
 517
 518     ctx = dpy_gl_ctx_create(g->scanout[scanout_idx].con, &qparams);
 519     return (virgl_renderer_gl_context)ctx;
 520 }
 521
 522 static void virgl_destroy_context(void *opaque, virgl_renderer_gl_context ctx)
 523 {
 524     VirtIOGPU *g = opaque;
 525     QEMUGLContext qctx = (QEMUGLContext)ctx;
 526
 527     dpy_gl_ctx_destroy(g->scanout[0].con, qctx);
 528 }
 529
 530 static int virgl_make_context_current(void *opaque, int scanout_idx,
 531                                       virgl_renderer_gl_context ctx)
 532 {
 533     VirtIOGPU *g = opaque;
 534     QEMUGLContext qctx = (QEMUGLContext)ctx;
 535
 536     return dpy_gl_ctx_make_current(g->scanout[scanout_idx].con, qctx);
 537 }
 538
 539 static struct virgl_renderer_callbacks virtio_gpu_3d_cbs = {
 540     .version             = 1,
 541     .write_fence         = virgl_write_fence,
 542     .create_gl_context   = virgl_create_context,
 543     .destroy_gl_context  = virgl_destroy_context,
 544     .make_current        = virgl_make_context_current,
 545 };
 546
 547 static void virtio_gpu_print_stats(void *opaque)
 548 {
 549     VirtIOGPU *g = opaque;
 550
 551     if (g->stats.requests) {
 552         fprintf(stderr, "stats: vq req %4d, %3d -- 3D %4d (%5d)\n",
 553                 g->stats.requests,
 554                 g->stats.max_inflight,
 555                 g->stats.req_3d,
 556                 g->stats.bytes_3d);
 557         g->stats.requests     = 0;
 558         g->stats.max_inflight = 0;
 559         g->stats.req_3d       = 0;
 560         g->stats.bytes_3d     = 0;
 561     } else {
 562         fprintf(stderr, "stats: idle\r");
 563     }
 564     timer_mod(g->print_stats, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 1000);
 565 }
 566
 567 static void virtio_gpu_fence_poll(void *opaque)
 568 {
 569     VirtIOGPU *g = opaque;
 570
 571     virgl_renderer_poll();
 572     virtio_gpu_process_cmdq(g);
 573     if (!QTAILQ_EMPTY(&g->cmdq) || !QTAILQ_EMPTY(&g->fenceq)) {
 574         timer_mod(g->fence_poll, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 10);
 575     }
 576 }
 577
 578 void virtio_gpu_virgl_fence_poll(VirtIOGPU *g)
 579 {
 580     virtio_gpu_fence_poll(g);
 581 }
 582
 583 void virtio_gpu_virgl_reset(VirtIOGPU *g)
 584 {
 585     int i;
 586
 587     /* virgl_renderer_reset() ??? */
 588     for (i = 0; i < g->conf.max_outputs; i++) {
 589         if (i != 0) {
 590             dpy_gfx_replace_surface(g->scanout[i].con, NULL);
 591         }
 592         dpy_gl_scanout(g->scanout[i].con, 0, false, 0, 0, 0, 0, 0, 0);
 593     }
 594 }
 595
 596 int virtio_gpu_virgl_init(VirtIOGPU *g)
 597 {
 598     int ret;
 599
 600     ret = virgl_renderer_init(g, 0, &virtio_gpu_3d_cbs);
 601     if (ret != 0) {
 602         return ret;
 603     }
 604
 605     g->fence_poll = timer_new_ms(QEMU_CLOCK_VIRTUAL,
 606                                  virtio_gpu_fence_poll, g);
 607
 608     if (virtio_gpu_stats_enabled(g->conf)) {
 609         g->print_stats = timer_new_ms(QEMU_CLOCK_VIRTUAL,
 610                                       virtio_gpu_print_stats, g);
 611         timer_mod(g->print_stats, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 1000);
 612     }
 613     return 0;
 614 }
 615
 616 #endif /* CONFIG_VIRGL */