xref: /openbmc/qemu/hw/display/virtio-gpu-virgl.c (revision ad1a706f)
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 & 1 /* FIXME: 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(VirtIOGPU *g)
592 {
593     int i;
594 
595     virgl_renderer_reset();
596     for (i = 0; i < g->parent_obj.conf.max_outputs; i++) {
597         dpy_gfx_replace_surface(g->parent_obj.scanout[i].con, NULL);
598         dpy_gl_scanout_disable(g->parent_obj.scanout[i].con);
599     }
600 }
601 
602 int virtio_gpu_virgl_init(VirtIOGPU *g)
603 {
604     int ret;
605 
606     ret = virgl_renderer_init(g, 0, &virtio_gpu_3d_cbs);
607     if (ret != 0) {
608         return ret;
609     }
610 
611     g->fence_poll = timer_new_ms(QEMU_CLOCK_VIRTUAL,
612                                  virtio_gpu_fence_poll, g);
613 
614     if (virtio_gpu_stats_enabled(g->parent_obj.conf)) {
615         g->print_stats = timer_new_ms(QEMU_CLOCK_VIRTUAL,
616                                       virtio_gpu_print_stats, g);
617         timer_mod(g->print_stats, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) + 1000);
618     }
619     return 0;
620 }
621 
622 int virtio_gpu_virgl_get_num_capsets(VirtIOGPU *g)
623 {
624     uint32_t capset2_max_ver, capset2_max_size;
625     virgl_renderer_get_cap_set(VIRTIO_GPU_CAPSET_VIRGL2,
626                               &capset2_max_ver,
627                               &capset2_max_size);
628 
629     return capset2_max_ver ? 2 : 1;
630 }
631