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
  21 #ifdef CONFIG_VIRGL
  22
  23 #include <virglrenderer.h>
  24
  25 static struct virgl_renderer_callbacks virtio_gpu_3d_cbs;
  26
  27 static void virgl_cmd_create_resource_2d(VirtIOGPU *g,
  28                                          struct virtio_gpu_ctrl_command *cmd)
  29 {
  30     struct virtio_gpu_resource_create_2d c2d;
  31     struct virgl_renderer_resource_create_args args;
  32
  33     VIRTIO_GPU_FILL_CMD(c2d);
  34     trace_virtio_gpu_cmd_res_create_2d(c2d.resource_id, c2d.format,
  35                                        c2d.width, c2d.height);
  36
  37     args.handle = c2d.resource_id;
  38     args.target = 2;
  39     args.format = c2d.format;
  40     args.bind = (1 << 1);
  41     args.width = c2d.width;
  42     args.height = c2d.height;
  43     args.depth = 1;
  44     args.array_size = 1;
  45     args.last_level = 0;
  46     args.nr_samples = 0;
  47     args.flags = VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP;
  48     virgl_renderer_resource_create(&args, NULL, 0);
  49 }
  50
  51 static void virgl_cmd_create_resource_3d(VirtIOGPU *g,
  52                                          struct virtio_gpu_ctrl_command *cmd)
  53 {
  54     struct virtio_gpu_resource_create_3d c3d;
  55     struct virgl_renderer_resource_create_args args;
  56
  57     VIRTIO_GPU_FILL_CMD(c3d);
  58     trace_virtio_gpu_cmd_res_create_3d(c3d.resource_id, c3d.format,
  59                                        c3d.width, c3d.height, c3d.depth);
  60
  61     args.handle = c3d.resource_id;
  62     args.target = c3d.target;
  63     args.format = c3d.format;
  64     args.bind = c3d.bind;
  65     args.width = c3d.width;
  66     args.height = c3d.height;
  67     args.depth = c3d.depth;
  68     args.array_size = c3d.array_size;
  69     args.last_level = c3d.last_level;
  70     args.nr_samples = c3d.nr_samples;
  71     args.flags = c3d.flags;
  72     virgl_renderer_resource_create(&args, NULL, 0);
  73 }
  74
  75 static void virgl_cmd_resource_unref(VirtIOGPU *g,
  76                                      struct virtio_gpu_ctrl_command *cmd)
  77 {
  78     struct virtio_gpu_resource_unref unref;
  79     struct iovec *res_iovs = NULL;
  80     int num_iovs = 0;
  81
  82     VIRTIO_GPU_FILL_CMD(unref);
  83     trace_virtio_gpu_cmd_res_unref(unref.resource_id);
  84
  85     virgl_renderer_resource_detach_iov(unref.resource_id,
  86                                        &res_iovs,
  87                                        &num_iovs);
  88     if (res_iovs != NULL && num_iovs != 0) {
  89         virtio_gpu_cleanup_mapping_iov(res_iovs, num_iovs);
  90     }
  91     virgl_renderer_resource_unref(unref.resource_id);
  92 }
  93
  94 static void virgl_cmd_context_create(VirtIOGPU *g,
  95                                      struct virtio_gpu_ctrl_command *cmd)
  96 {
  97     struct virtio_gpu_ctx_create cc;
  98
  99     VIRTIO_GPU_FILL_CMD(cc);
 100     trace_virtio_gpu_cmd_ctx_create(cc.hdr.ctx_id,
 101                                     cc.debug_name);
 102
 103     virgl_renderer_context_create(cc.hdr.ctx_id, cc.nlen,
 104                                   cc.debug_name);
 105 }
 106
 107 static void virgl_cmd_context_destroy(VirtIOGPU *g,
 108                                       struct virtio_gpu_ctrl_command *cmd)
 109 {
 110     struct virtio_gpu_ctx_destroy cd;
 111
 112     VIRTIO_GPU_FILL_CMD(cd);
 113     trace_virtio_gpu_cmd_ctx_destroy(cd.hdr.ctx_id);
 114
 115     virgl_renderer_context_destroy(cd.hdr.ctx_id);
 116 }
 117
 118 static void virtio_gpu_rect_update(VirtIOGPU *g, int idx, int x, int y,
 119                                 int width, int height)
 120 {
 121     if (!g->scanout[idx].con) {
 122         return;
 123     }
 124
 125     dpy_gl_update(g->scanout[idx].con, x, y, width, height);
 126 }
 127
 128 static void virgl_cmd_resource_flush(VirtIOGPU *g,
 129                                      struct virtio_gpu_ctrl_command *cmd)
 130 {
 131     struct virtio_gpu_resource_flush rf;
 132     int i;
 133
 134     VIRTIO_GPU_FILL_CMD(rf);
 135     trace_virtio_gpu_cmd_res_flush(rf.resource_id,
 136                                    rf.r.width, rf.r.height, rf.r.x, rf.r.y);
 137
 138     for (i = 0; i < g->conf.max_outputs; i++) {
 139         if (g->scanout[i].resource_id != rf.resource_id) {
 140             continue;
 141         }
 142         virtio_gpu_rect_update(g, i, rf.r.x, rf.r.y, rf.r.width, rf.r.height);
 143     }
 144 }
 145
 146 static void virgl_cmd_set_scanout(VirtIOGPU *g,
 147                                   struct virtio_gpu_ctrl_command *cmd)
 148 {
 149     struct virtio_gpu_set_scanout ss;
 150     struct virgl_renderer_resource_info info;
 151     int ret;
 152
 153     VIRTIO_GPU_FILL_CMD(ss);
 154     trace_virtio_gpu_cmd_set_scanout(ss.scanout_id, ss.resource_id,
 155                                      ss.r.width, ss.r.height, ss.r.x, ss.r.y);
 156
 157     if (ss.scanout_id >= g->conf.max_outputs) {
 158         qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d",
 159                       __func__, ss.scanout_id);
 160         cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID;
 161         return;
 162     }
 163     g->enable = 1;
 164
 165     memset(&info, 0, sizeof(info));
 166
 167     if (ss.resource_id && ss.r.width && ss.r.height) {
 168         ret = virgl_renderer_resource_get_info(ss.resource_id, &info);
 169         if (ret == -1) {
 170             qemu_log_mask(LOG_GUEST_ERROR,
 171                           "%s: illegal resource specified %d\n",
 172                           __func__, ss.resource_id);
 173             cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
 174             return;
 175         }
 176         qemu_console_resize(g->scanout[ss.scanout_id].con,
 177                             ss.r.width, ss.r.height);
 178         virgl_renderer_force_ctx_0();
 179         dpy_gl_scanout_texture(g->scanout[ss.scanout_id].con, info.tex_id,
 180                                info.flags & 1 /* FIXME: Y_0_TOP */,
 181                                info.width, info.height,
 182                                ss.r.x, ss.r.y, ss.r.width, ss.r.height);
 183     } else {
 184         if (ss.scanout_id != 0) {
 185             dpy_gfx_replace_surface(g->scanout[ss.scanout_id].con, NULL);
 186         }
 187         dpy_gl_scanout_disable(g->scanout[ss.scanout_id].con);
 188     }
 189     g->scanout[ss.scanout_id].resource_id = ss.resource_id;
 190 }
 191
 192 static void virgl_cmd_submit_3d(VirtIOGPU *g,
 193                                 struct virtio_gpu_ctrl_command *cmd)
 194 {
 195     struct virtio_gpu_cmd_submit cs;
 196     void *buf;
 197     size_t s;
 198
 199     VIRTIO_GPU_FILL_CMD(cs);
 200     trace_virtio_gpu_cmd_ctx_submit(cs.hdr.ctx_id, cs.size);
 201
 202     buf = g_malloc(cs.size);
 203     s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num,
 204                    sizeof(cs), buf, cs.size);
 205     if (s != cs.size) {
 206         qemu_log_mask(LOG_GUEST_ERROR, "%s: size mismatch (%zd/%d)",
 207                       __func__, s, cs.size);
 208         cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
 209         goto out;
 210     }
 211
 212     if (virtio_gpu_stats_enabled(g->conf)) {
 213         g->stats.req_3d++;
 214         g->stats.bytes_3d += cs.size;
 215     }
 216
 217     virgl_renderer_submit_cmd(buf, cs.hdr.ctx_id, cs.size / 4);
 218
 219 out:
 220     g_free(buf);
 221 }
 222
 223 static void virgl_cmd_transfer_to_host_2d(VirtIOGPU *g,
 224                                           struct virtio_gpu_ctrl_command *cmd)
 225 {
 226     struct virtio_gpu_transfer_to_host_2d t2d;
 227     struct virtio_gpu_box box;
 228
 229     VIRTIO_GPU_FILL_CMD(t2d);
 230     trace_virtio_gpu_cmd_res_xfer_toh_2d(t2d.resource_id);
 231
 232     box.x = t2d.r.x;
 233     box.y = t2d.r.y;
 234     box.z = 0;
 235     box.w = t2d.r.width;
 236     box.h = t2d.r.height;
 237     box.d = 1;
 238
 239     virgl_renderer_transfer_write_iov(t2d.resource_id,
 240                                       0,
 241                                       0,
 242                                       0,
 243                                       0,
 244                                       (struct virgl_box *)&box,
 245                                       t2d.offset, NULL, 0);
 246 }
 247
 248 static void virgl_cmd_transfer_to_host_3d(VirtIOGPU *g,
 249                                           struct virtio_gpu_ctrl_command *cmd)
 250 {
 251     struct virtio_gpu_transfer_host_3d t3d;
 252
 253     VIRTIO_GPU_FILL_CMD(t3d);
 254     trace_virtio_gpu_cmd_res_xfer_toh_3d(t3d.resource_id);
 255
 256     virgl_renderer_transfer_write_iov(t3d.resource_id,
 257                                       t3d.hdr.ctx_id,
 258                                       t3d.level,
 259                                       t3d.stride,
 260                                       t3d.layer_stride,
 261                                       (struct virgl_box *)&t3d.box,
 262                                       t3d.offset, NULL, 0);
 263 }
 264
 265 static void
 266 virgl_cmd_transfer_from_host_3d(VirtIOGPU *g,
 267                                 struct virtio_gpu_ctrl_command *cmd)
 268 {
 269     struct virtio_gpu_transfer_host_3d tf3d;
 270
 271     VIRTIO_GPU_FILL_CMD(tf3d);
 272     trace_virtio_gpu_cmd_res_xfer_fromh_3d(tf3d.resource_id);
 273
 274     virgl_renderer_transfer_read_iov(tf3d.resource_id,
 275                                      tf3d.hdr.ctx_id,
 276                                      tf3d.level,
 277                                      tf3d.stride,
 278                                      tf3d.layer_stride,
 279                                      (struct virgl_box *)&tf3d.box,
 280                                      tf3d.offset, NULL, 0);
 281 }
 282
 283
 284 static void virgl_resource_attach_backing(VirtIOGPU *g,
 285                                           struct virtio_gpu_ctrl_command *cmd)
 286 {
 287     struct virtio_gpu_resource_attach_backing att_rb;
 288     struct iovec *res_iovs;
 289     int ret;
 290
 291     VIRTIO_GPU_FILL_CMD(att_rb);
 292     trace_virtio_gpu_cmd_res_back_attach(att_rb.resource_id);
 293
 294     ret = virtio_gpu_create_mapping_iov(&att_rb, cmd, NULL, &res_iovs);
 295     if (ret != 0) {
 296         cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
 297         return;
 298     }
 299
 300     ret = virgl_renderer_resource_attach_iov(att_rb.resource_id,
 301                                              res_iovs, att_rb.nr_entries);
 302
 303     if (ret != 0)
 304         virtio_gpu_cleanup_mapping_iov(res_iovs, att_rb.nr_entries);
 305 }
 306
 307 static void virgl_resource_detach_backing(VirtIOGPU *g,
 308                                           struct virtio_gpu_ctrl_command *cmd)
 309 {
 310     struct virtio_gpu_resource_detach_backing detach_rb;
 311     struct iovec *res_iovs = NULL;
 312     int num_iovs = 0;
 313
 314     VIRTIO_GPU_FILL_CMD(detach_rb);
 315     trace_virtio_gpu_cmd_res_back_detach(detach_rb.resource_id);
 316
 317     virgl_renderer_resource_detach_iov(detach_rb.resource_id,
 318                                        &res_iovs,
 319                                        &num_iovs);
 320     if (res_iovs == NULL || num_iovs == 0) {
 321         return;
 322     }
 323     virtio_gpu_cleanup_mapping_iov(res_iovs, num_iovs);
 324 }
 325
 326
 327 static void virgl_cmd_ctx_attach_resource(VirtIOGPU *g,
 328                                           struct virtio_gpu_ctrl_command *cmd)
 329 {
 330     struct virtio_gpu_ctx_resource att_res;
 331
 332     VIRTIO_GPU_FILL_CMD(att_res);
 333     trace_virtio_gpu_cmd_ctx_res_attach(att_res.hdr.ctx_id,
 334                                         att_res.resource_id);
 335
 336     virgl_renderer_ctx_attach_resource(att_res.hdr.ctx_id, att_res.resource_id);
 337 }
 338
 339 static void virgl_cmd_ctx_detach_resource(VirtIOGPU *g,
 340                                           struct virtio_gpu_ctrl_command *cmd)
 341 {
 342     struct virtio_gpu_ctx_resource det_res;
 343
 344     VIRTIO_GPU_FILL_CMD(det_res);
 345     trace_virtio_gpu_cmd_ctx_res_detach(det_res.hdr.ctx_id,
 346                                         det_res.resource_id);
 347
 348     virgl_renderer_ctx_detach_resource(det_res.hdr.ctx_id, det_res.resource_id);
 349 }
 350
 351 static void virgl_cmd_get_capset_info(VirtIOGPU *g,
 352                                       struct virtio_gpu_ctrl_command *cmd)
 353 {
 354     struct virtio_gpu_get_capset_info info;
 355     struct virtio_gpu_resp_capset_info resp;
 356
 357     VIRTIO_GPU_FILL_CMD(info);
 358
 359     memset(&resp, 0, sizeof(resp));
 360     if (info.capset_index == 0) {
 361         resp.capset_id = VIRTIO_GPU_CAPSET_VIRGL;
 362         virgl_renderer_get_cap_set(resp.capset_id,
 363                                    &resp.capset_max_version,
 364                                    &resp.capset_max_size);
 365     } else if (info.capset_index == 1) {
 366         resp.capset_id = VIRTIO_GPU_CAPSET_VIRGL2;
 367         virgl_renderer_get_cap_set(resp.capset_id,
 368                                    &resp.capset_max_version,
 369                                    &resp.capset_max_size);
 370     } else {
 371         resp.capset_max_version = 0;
 372         resp.capset_max_size = 0;
 373     }
 374     resp.hdr.type = VIRTIO_GPU_RESP_OK_CAPSET_INFO;
 375     virtio_gpu_ctrl_response(g, cmd, &resp.hdr, sizeof(resp));
 376 }
 377
 378 static void virgl_cmd_get_capset(VirtIOGPU *g,
 379                                  struct virtio_gpu_ctrl_command *cmd)
 380 {
 381     struct virtio_gpu_get_capset gc;
 382     struct virtio_gpu_resp_capset *resp;
 383     uint32_t max_ver, max_size;
 384     VIRTIO_GPU_FILL_CMD(gc);
 385
 386     virgl_renderer_get_cap_set(gc.capset_id, &max_ver,
 387                                &max_size);
 388     if (!max_size) {
 389         cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
 390         return;
 391     }
 392
 393     resp = g_malloc0(sizeof(*resp) + max_size);
 394     resp->hdr.type = VIRTIO_GPU_RESP_OK_CAPSET;
 395     virgl_renderer_fill_caps(gc.capset_id,
 396                              gc.capset_version,
 397                              (void *)resp->capset_data);
 398     virtio_gpu_ctrl_response(g, cmd, &resp->hdr, sizeof(*resp) + max_size);
 399     g_free(resp);
 400 }
 401
 402 void virtio_gpu_virgl_process_cmd(VirtIOGPU *g,
 403                                       struct virtio_gpu_ctrl_command *cmd)
 404 {
 405     VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr);
 406
 407     cmd->waiting = g->renderer_blocked;
 408     if (cmd->waiting) {
 409         return;
 410     }
 411
 412     virgl_renderer_force_ctx_0();
 413     switch (cmd->cmd_hdr.type) {
 414     case VIRTIO_GPU_CMD_CTX_CREATE:
 415         virgl_cmd_context_create(g, cmd);
 416         break;
 417     case VIRTIO_GPU_CMD_CTX_DESTROY:
 418         virgl_cmd_context_destroy(g, cmd);
 419         break;
 420     case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D:
 421         virgl_cmd_create_resource_2d(g, cmd);
 422         break;
 423     case VIRTIO_GPU_CMD_RESOURCE_CREATE_3D:
 424         virgl_cmd_create_resource_3d(g, cmd);
 425         break;
 426     case VIRTIO_GPU_CMD_SUBMIT_3D:
 427         virgl_cmd_submit_3d(g, cmd);
 428         break;
 429     case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D:
 430         virgl_cmd_transfer_to_host_2d(g, cmd);
 431         break;
 432     case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D:
 433         virgl_cmd_transfer_to_host_3d(g, cmd);
 434         break;
 435     case VIRTIO_GPU_CMD_TRANSFER_FROM_HOST_3D:
 436         virgl_cmd_transfer_from_host_3d(g, cmd);
 437         break;
 438     case VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING:
 439         virgl_resource_attach_backing(g, cmd);
 440         break;
 441     case VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING:
 442         virgl_resource_detach_backing(g, cmd);
 443         break;
 444     case VIRTIO_GPU_CMD_SET_SCANOUT:
 445         virgl_cmd_set_scanout(g, cmd);
 446         break;
 447     case VIRTIO_GPU_CMD_RESOURCE_FLUSH:
 448         virgl_cmd_resource_flush(g, cmd);
 449        break;
 450     case VIRTIO_GPU_CMD_RESOURCE_UNREF:
 451         virgl_cmd_resource_unref(g, cmd);
 452         break;
 453     case VIRTIO_GPU_CMD_CTX_ATTACH_RESOURCE:
 454         /* TODO add security */
 455         virgl_cmd_ctx_attach_resource(g, cmd);
 456         break;
 457     case VIRTIO_GPU_CMD_CTX_DETACH_RESOURCE:
 458         /* TODO add security */
 459         virgl_cmd_ctx_detach_resource(g, cmd);
 460         break;
 461     case VIRTIO_GPU_CMD_GET_CAPSET_INFO:
 462         virgl_cmd_get_capset_info(g, cmd);
 463         break;
 464     case VIRTIO_GPU_CMD_GET_CAPSET:
 465         virgl_cmd_get_capset(g, cmd);
 466         break;
 467
 468     case VIRTIO_GPU_CMD_GET_DISPLAY_INFO:
 469         virtio_gpu_get_display_info(g, cmd);
 470         break;
 471     default:
 472         cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
 473         break;
 474     }
 475
 476     if (cmd->finished) {
 477         return;
 478     }
 479     if (cmd->error) {
 480         fprintf(stderr, "%s: ctrl 0x%x, error 0x%x\n", __func__,
 481                 cmd->cmd_hdr.type, cmd->error);
 482         virtio_gpu_ctrl_response_nodata(g, cmd, cmd->error);
 483         return;
 484     }
 485     if (!(cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_FENCE)) {
 486         virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA);
 487         return;
 488     }
 489
 490     trace_virtio_gpu_fence_ctrl(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type);
 491     virgl_renderer_create_fence(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type);
 492 }
 493
 494 static void virgl_write_fence(void *opaque, uint32_t fence)
 495 {
 496     VirtIOGPU *g = opaque;
 497     struct virtio_gpu_ctrl_command *cmd, *tmp;
 498
 499     QTAILQ_FOREACH_SAFE(cmd, &g->fenceq, next, tmp) {
 500         /*
 501          * the guest can end up emitting fences out of order
 502          * so we should check all fenced cmds not just the first one.
 503          */
 504         if (cmd->cmd_hdr.fence_id > fence) {
 505             continue;
 506         }
 507         trace_virtio_gpu_fence_resp(cmd->cmd_hdr.fence_id);
 508         virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA);
 509         QTAILQ_REMOVE(&g->fenceq, cmd, next);
 510         g_free(cmd);
 511         g->inflight--;
 512         if (virtio_gpu_stats_enabled(g->conf)) {
 513             fprintf(stderr, "inflight: %3d (-)\r", g->inflight);
 514         }
 515     }
 516 }
 517
 518 static virgl_renderer_gl_context
 519 virgl_create_context(void *opaque, int scanout_idx,
 520                      struct virgl_renderer_gl_ctx_param *params)
 521 {
 522     VirtIOGPU *g = opaque;
 523     QEMUGLContext ctx;
 524     QEMUGLParams qparams;
 525
 526     qparams.major_ver = params->major_ver;
 527     qparams.minor_ver = params->minor_ver;
 528
 529     ctx = dpy_gl_ctx_create(g->scanout[scanout_idx].con, &qparams);
 530     return (virgl_renderer_gl_context)ctx;
 531 }
 532
 533 static void virgl_destroy_context(void *opaque, virgl_renderer_gl_context ctx)
 534 {
 535     VirtIOGPU *g = opaque;
 536     QEMUGLContext qctx = (QEMUGLContext)ctx;
 537
 538     dpy_gl_ctx_destroy(g->scanout[0].con, qctx);
 539 }
 540
 541 static int virgl_make_context_current(void *opaque, int scanout_idx,
 542                                       virgl_renderer_gl_context ctx)
 543 {
 544     VirtIOGPU *g = opaque;
 545     QEMUGLContext qctx = (QEMUGLContext)ctx;
 546
 547     return dpy_gl_ctx_make_current(g->scanout[scanout_idx].con, qctx);
 548 }
 549
 550 static struct virgl_renderer_callbacks virtio_gpu_3d_cbs = {
 551     .version             = 1,
 552     .write_fence         = virgl_write_fence,
 553     .create_gl_context   = virgl_create_context,
 554     .destroy_gl_context  = virgl_destroy_context,
 555     .make_current        = virgl_make_context_current,
 556 };
 557
 558 static void virtio_gpu_print_stats(void *opaque)
 559 {
 560     VirtIOGPU *g = opaque;
 561
 562     if (g->stats.requests) {
 563         fprintf(stderr, "stats: vq req %4d, %3d -- 3D %4d (%5d)\n",
 564                 g->stats.requests,
 565                 g->stats.max_inflight,
 566                 g->stats.req_3d,
 567                 g->stats.bytes_3d);
 568         g->stats.requests     = 0;
 569         g->stats.max_inflight = 0;
 570         g->stats.req_3d       = 0;
 571         g->stats.bytes_3d     = 0;
 572     } else {
 573         fprintf(stderr, "stats: idle\r");
 574     }
 575     timer_mod(g->print_stats, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 1000);
 576 }
 577
 578 static void virtio_gpu_fence_poll(void *opaque)
 579 {
 580     VirtIOGPU *g = opaque;
 581
 582     virgl_renderer_poll();
 583     virtio_gpu_process_cmdq(g);
 584     if (!QTAILQ_EMPTY(&g->cmdq) || !QTAILQ_EMPTY(&g->fenceq)) {
 585         timer_mod(g->fence_poll, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 10);
 586     }
 587 }
 588
 589 void virtio_gpu_virgl_fence_poll(VirtIOGPU *g)
 590 {
 591     virtio_gpu_fence_poll(g);
 592 }
 593
 594 void virtio_gpu_virgl_reset(VirtIOGPU *g)
 595 {
 596     int i;
 597
 598     /* virgl_renderer_reset() ??? */
 599     for (i = 0; i < g->conf.max_outputs; i++) {
 600         if (i != 0) {
 601             dpy_gfx_replace_surface(g->scanout[i].con, NULL);
 602         }
 603         dpy_gl_scanout_disable(g->scanout[i].con);
 604     }
 605 }
 606
 607 void virtio_gpu_gl_block(void *opaque, bool block)
 608 {
 609     VirtIOGPU *g = opaque;
 610
 611     if (block) {
 612         g->renderer_blocked++;
 613     } else {
 614         g->renderer_blocked--;
 615     }
 616     assert(g->renderer_blocked >= 0);
 617
 618     if (g->renderer_blocked == 0) {
 619         virtio_gpu_process_cmdq(g);
 620     }
 621 }
 622
 623 int virtio_gpu_virgl_init(VirtIOGPU *g)
 624 {
 625     int ret;
 626
 627     ret = virgl_renderer_init(g, 0, &virtio_gpu_3d_cbs);
 628     if (ret != 0) {
 629         return ret;
 630     }
 631
 632     g->fence_poll = timer_new_ms(QEMU_CLOCK_VIRTUAL,
 633                                  virtio_gpu_fence_poll, g);
 634
 635     if (virtio_gpu_stats_enabled(g->conf)) {
 636         g->print_stats = timer_new_ms(QEMU_CLOCK_VIRTUAL,
 637                                       virtio_gpu_print_stats, g);
 638         timer_mod(g->print_stats, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 1000);
 639     }
 640     return 0;
 641 }
 642
 643 int virtio_gpu_virgl_get_num_capsets(VirtIOGPU *g)
 644 {
 645     uint32_t capset2_max_ver, capset2_max_size;
 646     virgl_renderer_get_cap_set(VIRTIO_GPU_CAPSET_VIRGL2,
 647                               &capset2_max_ver,
 648                               &capset2_max_size);
 649
 650     return capset2_max_ver ? 2 : 1;
 651 }
 652
 653 #endif /* CONFIG_VIRGL */