hw/display/virtio-gpu-virgl.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/iov.h"
  16 #include "trace.h"
  17 #include "hw/virtio/virtio.h"
  18 #include "hw/virtio/virtio-gpu.h"
  19
  20 #include <virglrenderer.h>
  21
  22 static struct virgl_renderer_callbacks virtio_gpu_3d_cbs;
  23
  24 static void virgl_cmd_create_resource_2d(VirtIOGPU *g,
  25                                          struct virtio_gpu_ctrl_command *cmd)
  26 {
  27     struct virtio_gpu_resource_create_2d c2d;
  28     struct virgl_renderer_resource_create_args args;
  29
  30     VIRTIO_GPU_FILL_CMD(c2d);
  31     trace_virtio_gpu_cmd_res_create_2d(c2d.resource_id, c2d.format,
  32                                        c2d.width, c2d.height);
  33
  34     args.handle = c2d.resource_id;
  35     args.target = 2;
  36     args.format = c2d.format;
  37     args.bind = (1 << 1);
  38     args.width = c2d.width;
  39     args.height = c2d.height;
  40     args.depth = 1;
  41     args.array_size = 1;
  42     args.last_level = 0;
  43     args.nr_samples = 0;
  44     args.flags = VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP;
  45     virgl_renderer_resource_create(&args, NULL, 0);
  46 }
  47
  48 static void virgl_cmd_create_resource_3d(VirtIOGPU *g,
  49                                          struct virtio_gpu_ctrl_command *cmd)
  50 {
  51     struct virtio_gpu_resource_create_3d c3d;
  52     struct virgl_renderer_resource_create_args args;
  53
  54     VIRTIO_GPU_FILL_CMD(c3d);
  55     trace_virtio_gpu_cmd_res_create_3d(c3d.resource_id, c3d.format,
  56                                        c3d.width, c3d.height, c3d.depth);
  57
  58     args.handle = c3d.resource_id;
  59     args.target = c3d.target;
  60     args.format = c3d.format;
  61     args.bind = c3d.bind;
  62     args.width = c3d.width;
  63     args.height = c3d.height;
  64     args.depth = c3d.depth;
  65     args.array_size = c3d.array_size;
  66     args.last_level = c3d.last_level;
  67     args.nr_samples = c3d.nr_samples;
  68     args.flags = c3d.flags;
  69     virgl_renderer_resource_create(&args, NULL, 0);
  70 }
  71
  72 static void virgl_cmd_resource_unref(VirtIOGPU *g,
  73                                      struct virtio_gpu_ctrl_command *cmd)
  74 {
  75     struct virtio_gpu_resource_unref unref;
  76     struct iovec *res_iovs = NULL;
  77     int num_iovs = 0;
  78
  79     VIRTIO_GPU_FILL_CMD(unref);
  80     trace_virtio_gpu_cmd_res_unref(unref.resource_id);
  81
  82     virgl_renderer_resource_detach_iov(unref.resource_id,
  83                                        &res_iovs,
  84                                        &num_iovs);
  85     if (res_iovs != NULL && num_iovs != 0) {
  86         virtio_gpu_cleanup_mapping_iov(g, res_iovs, num_iovs);
  87     }
  88     virgl_renderer_resource_unref(unref.resource_id);
  89 }
  90
  91 static void virgl_cmd_context_create(VirtIOGPU *g,
  92                                      struct virtio_gpu_ctrl_command *cmd)
  93 {
  94     struct virtio_gpu_ctx_create cc;
  95
  96     VIRTIO_GPU_FILL_CMD(cc);
  97     trace_virtio_gpu_cmd_ctx_create(cc.hdr.ctx_id,
  98                                     cc.debug_name);
  99
 100     virgl_renderer_context_create(cc.hdr.ctx_id, cc.nlen,
 101                                   cc.debug_name);
 102 }
 103
 104 static void virgl_cmd_context_destroy(VirtIOGPU *g,
 105                                       struct virtio_gpu_ctrl_command *cmd)
 106 {
 107     struct virtio_gpu_ctx_destroy cd;
 108
 109     VIRTIO_GPU_FILL_CMD(cd);
 110     trace_virtio_gpu_cmd_ctx_destroy(cd.hdr.ctx_id);
 111
 112     virgl_renderer_context_destroy(cd.hdr.ctx_id);
 113 }
 114
 115 static void virtio_gpu_rect_update(VirtIOGPU *g, int idx, int x, int y,
 116                                 int width, int height)
 117 {
 118     if (!g->parent_obj.scanout[idx].con) {
 119         return;
 120     }
 121
 122     dpy_gl_update(g->parent_obj.scanout[idx].con, x, y, width, height);
 123 }
 124
 125 static void virgl_cmd_resource_flush(VirtIOGPU *g,
 126                                      struct virtio_gpu_ctrl_command *cmd)
 127 {
 128     struct virtio_gpu_resource_flush rf;
 129     int i;
 130
 131     VIRTIO_GPU_FILL_CMD(rf);
 132     trace_virtio_gpu_cmd_res_flush(rf.resource_id,
 133                                    rf.r.width, rf.r.height, rf.r.x, rf.r.y);
 134
 135     for (i = 0; i < g->parent_obj.conf.max_outputs; i++) {
 136         if (g->parent_obj.scanout[i].resource_id != rf.resource_id) {
 137             continue;
 138         }
 139         virtio_gpu_rect_update(g, i, rf.r.x, rf.r.y, rf.r.width, rf.r.height);
 140     }
 141 }
 142
 143 static void virgl_cmd_set_scanout(VirtIOGPU *g,
 144                                   struct virtio_gpu_ctrl_command *cmd)
 145 {
 146     struct virtio_gpu_set_scanout ss;
 147     struct virgl_renderer_resource_info info;
 148     int ret;
 149
 150     VIRTIO_GPU_FILL_CMD(ss);
 151     trace_virtio_gpu_cmd_set_scanout(ss.scanout_id, ss.resource_id,
 152                                      ss.r.width, ss.r.height, ss.r.x, ss.r.y);
 153
 154     if (ss.scanout_id >= g->parent_obj.conf.max_outputs) {
 155         qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d",
 156                       __func__, ss.scanout_id);
 157         cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID;
 158         return;
 159     }
 160     g->parent_obj.enable = 1;
 161
 162     memset(&info, 0, sizeof(info));
 163
 164     if (ss.resource_id && ss.r.width && ss.r.height) {
 165         ret = virgl_renderer_resource_get_info(ss.resource_id, &info);
 166         if (ret == -1) {
 167             qemu_log_mask(LOG_GUEST_ERROR,
 168                           "%s: illegal resource specified %d\n",
 169                           __func__, ss.resource_id);
 170             cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
 171             return;
 172         }
 173         qemu_console_resize(g->parent_obj.scanout[ss.scanout_id].con,
 174                             ss.r.width, ss.r.height);
 175         virgl_renderer_force_ctx_0();
 176         dpy_gl_scanout_texture(
 177             g->parent_obj.scanout[ss.scanout_id].con, info.tex_id,
 178             info.flags & VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP,
 179             info.width, info.height,
 180             ss.r.x, ss.r.y, ss.r.width, ss.r.height);
 181     } else {
 182         dpy_gfx_replace_surface(
 183             g->parent_obj.scanout[ss.scanout_id].con, NULL);
 184         dpy_gl_scanout_disable(g->parent_obj.scanout[ss.scanout_id].con);
 185     }
 186     g->parent_obj.scanout[ss.scanout_id].resource_id = ss.resource_id;
 187 }
 188
 189 static void virgl_cmd_submit_3d(VirtIOGPU *g,
 190                                 struct virtio_gpu_ctrl_command *cmd)
 191 {
 192     struct virtio_gpu_cmd_submit cs;
 193     void *buf;
 194     size_t s;
 195
 196     VIRTIO_GPU_FILL_CMD(cs);
 197     trace_virtio_gpu_cmd_ctx_submit(cs.hdr.ctx_id, cs.size);
 198
 199     buf = g_malloc(cs.size);
 200     s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num,
 201                    sizeof(cs), buf, cs.size);
 202     if (s != cs.size) {
 203         qemu_log_mask(LOG_GUEST_ERROR, "%s: size mismatch (%zd/%d)",
 204                       __func__, s, cs.size);
 205         cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
 206         goto out;
 207     }
 208
 209     if (virtio_gpu_stats_enabled(g->parent_obj.conf)) {
 210         g->stats.req_3d++;
 211         g->stats.bytes_3d += cs.size;
 212     }
 213
 214     virgl_renderer_submit_cmd(buf, cs.hdr.ctx_id, cs.size / 4);
 215
 216 out:
 217     g_free(buf);
 218 }
 219
 220 static void virgl_cmd_transfer_to_host_2d(VirtIOGPU *g,
 221                                           struct virtio_gpu_ctrl_command *cmd)
 222 {
 223     struct virtio_gpu_transfer_to_host_2d t2d;
 224     struct virtio_gpu_box box;
 225
 226     VIRTIO_GPU_FILL_CMD(t2d);
 227     trace_virtio_gpu_cmd_res_xfer_toh_2d(t2d.resource_id);
 228
 229     box.x = t2d.r.x;
 230     box.y = t2d.r.y;
 231     box.z = 0;
 232     box.w = t2d.r.width;
 233     box.h = t2d.r.height;
 234     box.d = 1;
 235
 236     virgl_renderer_transfer_write_iov(t2d.resource_id,
 237                                       0,
 238                                       0,
 239                                       0,
 240                                       0,
 241                                       (struct virgl_box *)&box,
 242                                       t2d.offset, NULL, 0);
 243 }
 244
 245 static void virgl_cmd_transfer_to_host_3d(VirtIOGPU *g,
 246                                           struct virtio_gpu_ctrl_command *cmd)
 247 {
 248     struct virtio_gpu_transfer_host_3d t3d;
 249
 250     VIRTIO_GPU_FILL_CMD(t3d);
 251     trace_virtio_gpu_cmd_res_xfer_toh_3d(t3d.resource_id);
 252
 253     virgl_renderer_transfer_write_iov(t3d.resource_id,
 254                                       t3d.hdr.ctx_id,
 255                                       t3d.level,
 256                                       t3d.stride,
 257                                       t3d.layer_stride,
 258                                       (struct virgl_box *)&t3d.box,
 259                                       t3d.offset, NULL, 0);
 260 }
 261
 262 static void
 263 virgl_cmd_transfer_from_host_3d(VirtIOGPU *g,
 264                                 struct virtio_gpu_ctrl_command *cmd)
 265 {
 266     struct virtio_gpu_transfer_host_3d tf3d;
 267
 268     VIRTIO_GPU_FILL_CMD(tf3d);
 269     trace_virtio_gpu_cmd_res_xfer_fromh_3d(tf3d.resource_id);
 270
 271     virgl_renderer_transfer_read_iov(tf3d.resource_id,
 272                                      tf3d.hdr.ctx_id,
 273                                      tf3d.level,
 274                                      tf3d.stride,
 275                                      tf3d.layer_stride,
 276                                      (struct virgl_box *)&tf3d.box,
 277                                      tf3d.offset, NULL, 0);
 278 }
 279
 280
 281 static void virgl_resource_attach_backing(VirtIOGPU *g,
 282                                           struct virtio_gpu_ctrl_command *cmd)
 283 {
 284     struct virtio_gpu_resource_attach_backing att_rb;
 285     struct iovec *res_iovs;
 286     uint32_t res_niov;
 287     int ret;
 288
 289     VIRTIO_GPU_FILL_CMD(att_rb);
 290     trace_virtio_gpu_cmd_res_back_attach(att_rb.resource_id);
 291
 292     ret = virtio_gpu_create_mapping_iov(g, att_rb.nr_entries, sizeof(att_rb),
 293                                         cmd, NULL, &res_iovs, &res_niov);
 294     if (ret != 0) {
 295         cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
 296         return;
 297     }
 298
 299     ret = virgl_renderer_resource_attach_iov(att_rb.resource_id,
 300                                              res_iovs, res_niov);
 301
 302     if (ret != 0)
 303         virtio_gpu_cleanup_mapping_iov(g, res_iovs, res_niov);
 304 }
 305
 306 static void virgl_resource_detach_backing(VirtIOGPU *g,
 307                                           struct virtio_gpu_ctrl_command *cmd)
 308 {
 309     struct virtio_gpu_resource_detach_backing detach_rb;
 310     struct iovec *res_iovs = NULL;
 311     int num_iovs = 0;
 312
 313     VIRTIO_GPU_FILL_CMD(detach_rb);
 314     trace_virtio_gpu_cmd_res_back_detach(detach_rb.resource_id);
 315
 316     virgl_renderer_resource_detach_iov(detach_rb.resource_id,
 317                                        &res_iovs,
 318                                        &num_iovs);
 319     if (res_iovs == NULL || num_iovs == 0) {
 320         return;
 321     }
 322     virtio_gpu_cleanup_mapping_iov(g, res_iovs, num_iovs);
 323 }
 324
 325
 326 static void virgl_cmd_ctx_attach_resource(VirtIOGPU *g,
 327                                           struct virtio_gpu_ctrl_command *cmd)
 328 {
 329     struct virtio_gpu_ctx_resource att_res;
 330
 331     VIRTIO_GPU_FILL_CMD(att_res);
 332     trace_virtio_gpu_cmd_ctx_res_attach(att_res.hdr.ctx_id,
 333                                         att_res.resource_id);
 334
 335     virgl_renderer_ctx_attach_resource(att_res.hdr.ctx_id, att_res.resource_id);
 336 }
 337
 338 static void virgl_cmd_ctx_detach_resource(VirtIOGPU *g,
 339                                           struct virtio_gpu_ctrl_command *cmd)
 340 {
 341     struct virtio_gpu_ctx_resource det_res;
 342
 343     VIRTIO_GPU_FILL_CMD(det_res);
 344     trace_virtio_gpu_cmd_ctx_res_detach(det_res.hdr.ctx_id,
 345                                         det_res.resource_id);
 346
 347     virgl_renderer_ctx_detach_resource(det_res.hdr.ctx_id, det_res.resource_id);
 348 }
 349
 350 static void virgl_cmd_get_capset_info(VirtIOGPU *g,
 351                                       struct virtio_gpu_ctrl_command *cmd)
 352 {
 353     struct virtio_gpu_get_capset_info info;
 354     struct virtio_gpu_resp_capset_info resp;
 355
 356     VIRTIO_GPU_FILL_CMD(info);
 357
 358     memset(&resp, 0, sizeof(resp));
 359     if (info.capset_index == 0) {
 360         resp.capset_id = VIRTIO_GPU_CAPSET_VIRGL;
 361         virgl_renderer_get_cap_set(resp.capset_id,
 362                                    &resp.capset_max_version,
 363                                    &resp.capset_max_size);
 364     } else if (info.capset_index == 1) {
 365         resp.capset_id = VIRTIO_GPU_CAPSET_VIRGL2;
 366         virgl_renderer_get_cap_set(resp.capset_id,
 367                                    &resp.capset_max_version,
 368                                    &resp.capset_max_size);
 369     } else {
 370         resp.capset_max_version = 0;
 371         resp.capset_max_size = 0;
 372     }
 373     resp.hdr.type = VIRTIO_GPU_RESP_OK_CAPSET_INFO;
 374     virtio_gpu_ctrl_response(g, cmd, &resp.hdr, sizeof(resp));
 375 }
 376
 377 static void virgl_cmd_get_capset(VirtIOGPU *g,
 378                                  struct virtio_gpu_ctrl_command *cmd)
 379 {
 380     struct virtio_gpu_get_capset gc;
 381     struct virtio_gpu_resp_capset *resp;
 382     uint32_t max_ver, max_size;
 383     VIRTIO_GPU_FILL_CMD(gc);
 384
 385     virgl_renderer_get_cap_set(gc.capset_id, &max_ver,
 386                                &max_size);
 387     if (!max_size) {
 388         cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
 389         return;
 390     }
 391
 392     resp = g_malloc0(sizeof(*resp) + max_size);
 393     resp->hdr.type = VIRTIO_GPU_RESP_OK_CAPSET;
 394     virgl_renderer_fill_caps(gc.capset_id,
 395                              gc.capset_version,
 396                              (void *)resp->capset_data);
 397     virtio_gpu_ctrl_response(g, cmd, &resp->hdr, sizeof(*resp) + max_size);
 398     g_free(resp);
 399 }
 400
 401 void virtio_gpu_virgl_process_cmd(VirtIOGPU *g,
 402                                       struct virtio_gpu_ctrl_command *cmd)
 403 {
 404     VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr);
 405
 406     virgl_renderer_force_ctx_0();
 407     switch (cmd->cmd_hdr.type) {
 408     case VIRTIO_GPU_CMD_CTX_CREATE:
 409         virgl_cmd_context_create(g, cmd);
 410         break;
 411     case VIRTIO_GPU_CMD_CTX_DESTROY:
 412         virgl_cmd_context_destroy(g, cmd);
 413         break;
 414     case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D:
 415         virgl_cmd_create_resource_2d(g, cmd);
 416         break;
 417     case VIRTIO_GPU_CMD_RESOURCE_CREATE_3D:
 418         virgl_cmd_create_resource_3d(g, cmd);
 419         break;
 420     case VIRTIO_GPU_CMD_SUBMIT_3D:
 421         virgl_cmd_submit_3d(g, cmd);
 422         break;
 423     case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D:
 424         virgl_cmd_transfer_to_host_2d(g, cmd);
 425         break;
 426     case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D:
 427         virgl_cmd_transfer_to_host_3d(g, cmd);
 428         break;
 429     case VIRTIO_GPU_CMD_TRANSFER_FROM_HOST_3D:
 430         virgl_cmd_transfer_from_host_3d(g, cmd);
 431         break;
 432     case VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING:
 433         virgl_resource_attach_backing(g, cmd);
 434         break;
 435     case VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING:
 436         virgl_resource_detach_backing(g, cmd);
 437         break;
 438     case VIRTIO_GPU_CMD_SET_SCANOUT:
 439         virgl_cmd_set_scanout(g, cmd);
 440         break;
 441     case VIRTIO_GPU_CMD_RESOURCE_FLUSH:
 442         virgl_cmd_resource_flush(g, cmd);
 443         break;
 444     case VIRTIO_GPU_CMD_RESOURCE_UNREF:
 445         virgl_cmd_resource_unref(g, cmd);
 446         break;
 447     case VIRTIO_GPU_CMD_CTX_ATTACH_RESOURCE:
 448         /* TODO add security */
 449         virgl_cmd_ctx_attach_resource(g, cmd);
 450         break;
 451     case VIRTIO_GPU_CMD_CTX_DETACH_RESOURCE:
 452         /* TODO add security */
 453         virgl_cmd_ctx_detach_resource(g, cmd);
 454         break;
 455     case VIRTIO_GPU_CMD_GET_CAPSET_INFO:
 456         virgl_cmd_get_capset_info(g, cmd);
 457         break;
 458     case VIRTIO_GPU_CMD_GET_CAPSET:
 459         virgl_cmd_get_capset(g, cmd);
 460         break;
 461     case VIRTIO_GPU_CMD_GET_DISPLAY_INFO:
 462         virtio_gpu_get_display_info(g, cmd);
 463         break;
 464     case VIRTIO_GPU_CMD_GET_EDID:
 465         virtio_gpu_get_edid(g, cmd);
 466         break;
 467     default:
 468         cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
 469         break;
 470     }
 471
 472     if (cmd->finished) {
 473         return;
 474     }
 475     if (cmd->error) {
 476         fprintf(stderr, "%s: ctrl 0x%x, error 0x%x\n", __func__,
 477                 cmd->cmd_hdr.type, cmd->error);
 478         virtio_gpu_ctrl_response_nodata(g, cmd, cmd->error);
 479         return;
 480     }
 481     if (!(cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_FENCE)) {
 482         virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA);
 483         return;
 484     }
 485
 486     trace_virtio_gpu_fence_ctrl(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type);
 487     virgl_renderer_create_fence(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type);
 488 }
 489
 490 static void virgl_write_fence(void *opaque, uint32_t fence)
 491 {
 492     VirtIOGPU *g = opaque;
 493     struct virtio_gpu_ctrl_command *cmd, *tmp;
 494
 495     QTAILQ_FOREACH_SAFE(cmd, &g->fenceq, next, tmp) {
 496         /*
 497          * the guest can end up emitting fences out of order
 498          * so we should check all fenced cmds not just the first one.
 499          */
 500         if (cmd->cmd_hdr.fence_id > fence) {
 501             continue;
 502         }
 503         trace_virtio_gpu_fence_resp(cmd->cmd_hdr.fence_id);
 504         virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA);
 505         QTAILQ_REMOVE(&g->fenceq, cmd, next);
 506         g_free(cmd);
 507         g->inflight--;
 508         if (virtio_gpu_stats_enabled(g->parent_obj.conf)) {
 509             fprintf(stderr, "inflight: %3d (-)\r", g->inflight);
 510         }
 511     }
 512 }
 513
 514 static virgl_renderer_gl_context
 515 virgl_create_context(void *opaque, int scanout_idx,
 516                      struct virgl_renderer_gl_ctx_param *params)
 517 {
 518     VirtIOGPU *g = opaque;
 519     QEMUGLContext ctx;
 520     QEMUGLParams qparams;
 521
 522     qparams.major_ver = params->major_ver;
 523     qparams.minor_ver = params->minor_ver;
 524
 525     ctx = dpy_gl_ctx_create(g->parent_obj.scanout[scanout_idx].con, &qparams);
 526     return (virgl_renderer_gl_context)ctx;
 527 }
 528
 529 static void virgl_destroy_context(void *opaque, virgl_renderer_gl_context ctx)
 530 {
 531     VirtIOGPU *g = opaque;
 532     QEMUGLContext qctx = (QEMUGLContext)ctx;
 533
 534     dpy_gl_ctx_destroy(g->parent_obj.scanout[0].con, qctx);
 535 }
 536
 537 static int virgl_make_context_current(void *opaque, int scanout_idx,
 538                                       virgl_renderer_gl_context ctx)
 539 {
 540     VirtIOGPU *g = opaque;
 541     QEMUGLContext qctx = (QEMUGLContext)ctx;
 542
 543     return dpy_gl_ctx_make_current(g->parent_obj.scanout[scanout_idx].con,
 544                                    qctx);
 545 }
 546
 547 static struct virgl_renderer_callbacks virtio_gpu_3d_cbs = {
 548     .version             = 1,
 549     .write_fence         = virgl_write_fence,
 550     .create_gl_context   = virgl_create_context,
 551     .destroy_gl_context  = virgl_destroy_context,
 552     .make_current        = virgl_make_context_current,
 553 };
 554
 555 static void virtio_gpu_print_stats(void *opaque)
 556 {
 557     VirtIOGPU *g = opaque;
 558
 559     if (g->stats.requests) {
 560         fprintf(stderr, "stats: vq req %4d, %3d -- 3D %4d (%5d)\n",
 561                 g->stats.requests,
 562                 g->stats.max_inflight,
 563                 g->stats.req_3d,
 564                 g->stats.bytes_3d);
 565         g->stats.requests     = 0;
 566         g->stats.max_inflight = 0;
 567         g->stats.req_3d       = 0;
 568         g->stats.bytes_3d     = 0;
 569     } else {
 570         fprintf(stderr, "stats: idle\r");
 571     }
 572     timer_mod(g->print_stats, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 1000);
 573 }
 574
 575 static void virtio_gpu_fence_poll(void *opaque)
 576 {
 577     VirtIOGPU *g = opaque;
 578
 579     virgl_renderer_poll();
 580     virtio_gpu_process_cmdq(g);
 581     if (!QTAILQ_EMPTY(&g->cmdq) || !QTAILQ_EMPTY(&g->fenceq)) {
 582         timer_mod(g->fence_poll, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 10);
 583     }
 584 }
 585
 586 void virtio_gpu_virgl_fence_poll(VirtIOGPU *g)
 587 {
 588     virtio_gpu_fence_poll(g);
 589 }
 590
 591 void virtio_gpu_virgl_reset_scanout(VirtIOGPU *g)
 592 {
 593     int i;
 594
 595     for (i = 0; i < g->parent_obj.conf.max_outputs; i++) {
 596         dpy_gfx_replace_surface(g->parent_obj.scanout[i].con, NULL);
 597         dpy_gl_scanout_disable(g->parent_obj.scanout[i].con);
 598     }
 599 }
 600
 601 void virtio_gpu_virgl_reset(VirtIOGPU *g)
 602 {
 603     virgl_renderer_reset();
 604 }
 605
 606 int virtio_gpu_virgl_init(VirtIOGPU *g)
 607 {
 608     int ret;
 609
 610     ret = virgl_renderer_init(g, 0, &virtio_gpu_3d_cbs);
 611     if (ret != 0) {
 612         error_report("virgl could not be initialized: %d", ret);
 613         return ret;
 614     }
 615
 616     g->fence_poll = timer_new_ms(QEMU_CLOCK_VIRTUAL,
 617                                  virtio_gpu_fence_poll, g);
 618
 619     if (virtio_gpu_stats_enabled(g->parent_obj.conf)) {
 620         g->print_stats = timer_new_ms(QEMU_CLOCK_VIRTUAL,
 621                                       virtio_gpu_print_stats, g);
 622         timer_mod(g->print_stats, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 1000);
 623     }
 624     return 0;
 625 }
 626
 627 int virtio_gpu_virgl_get_num_capsets(VirtIOGPU *g)
 628 {
 629     uint32_t capset2_max_ver, capset2_max_size;
 630     virgl_renderer_get_cap_set(VIRTIO_GPU_CAPSET_VIRGL2,
 631                               &capset2_max_ver,
 632                               &capset2_max_size);
 633
 634     return capset2_max_ver ? 2 : 1;
 635 }