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migration: Route more error paths
[qemu.git] / hw / display / virtio-gpu.c
blob43bbe09ea0f0f3941a96309a2b4b0af92a4b3fd2
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 "ui/console.h"
18 #include "trace.h"
19 #include "hw/virtio/virtio.h"
20 #include "hw/virtio/virtio-gpu.h"
21 #include "hw/virtio/virtio-bus.h"
22 #include "migration/blocker.h"
23 #include "qemu/log.h"
24 #include "qapi/error.h"
25
26 #define VIRTIO_GPU_VM_VERSION 1
27
28 static struct virtio_gpu_simple_resource*
29 virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resource_id);
30
31 static void virtio_gpu_cleanup_mapping(struct virtio_gpu_simple_resource *res);
32
33 static void
34 virtio_gpu_ctrl_hdr_bswap(struct virtio_gpu_ctrl_hdr *hdr)
35 {
36 le32_to_cpus(&hdr->type);
37 le32_to_cpus(&hdr->flags);
38 le64_to_cpus(&hdr->fence_id);
39 le32_to_cpus(&hdr->ctx_id);
40 le32_to_cpus(&hdr->padding);
41 }
42
43 static void virtio_gpu_bswap_32(void *ptr,
44 size_t size)
45 {
46 #ifdef HOST_WORDS_BIGENDIAN
47
48 size_t i;
49 struct virtio_gpu_ctrl_hdr *hdr = (struct virtio_gpu_ctrl_hdr *) ptr;
50
51 virtio_gpu_ctrl_hdr_bswap(hdr);
52
53 i = sizeof(struct virtio_gpu_ctrl_hdr);
54 while (i < size) {
55 le32_to_cpus((uint32_t *)(ptr + i));
56 i = i + sizeof(uint32_t);
57 }
58
59 #endif
60 }
61
62 static void
63 virtio_gpu_t2d_bswap(struct virtio_gpu_transfer_to_host_2d *t2d)
64 {
65 virtio_gpu_ctrl_hdr_bswap(&t2d->hdr);
66 le32_to_cpus(&t2d->r.x);
67 le32_to_cpus(&t2d->r.y);
68 le32_to_cpus(&t2d->r.width);
69 le32_to_cpus(&t2d->r.height);
70 le64_to_cpus(&t2d->offset);
71 le32_to_cpus(&t2d->resource_id);
72 le32_to_cpus(&t2d->padding);
73 }
74
75 #ifdef CONFIG_VIRGL
76 #include <virglrenderer.h>
77 #define VIRGL(_g, _virgl, _simple, ...) \
78 do { \
79 if (_g->use_virgl_renderer) { \
80 _virgl(__VA_ARGS__); \
81 } else { \
82 _simple(__VA_ARGS__); \
83 } \
84 } while (0)
85 #else
86 #define VIRGL(_g, _virgl, _simple, ...) \
87 do { \
88 _simple(__VA_ARGS__); \
89 } while (0)
90 #endif
91
92 static void update_cursor_data_simple(VirtIOGPU *g,
93 struct virtio_gpu_scanout *s,
94 uint32_t resource_id)
95 {
96 struct virtio_gpu_simple_resource *res;
97 uint32_t pixels;
98
99 res = virtio_gpu_find_resource(g, resource_id);
100 if (!res) {
101 return;
102 }
103
104 if (pixman_image_get_width(res->image) != s->current_cursor->width ||
105 pixman_image_get_height(res->image) != s->current_cursor->height) {
106 return;
107 }
108
109 pixels = s->current_cursor->width * s->current_cursor->height;
110 memcpy(s->current_cursor->data,
111 pixman_image_get_data(res->image),
112 pixels * sizeof(uint32_t));
113 }
114
115 #ifdef CONFIG_VIRGL
116
117 static void update_cursor_data_virgl(VirtIOGPU *g,
118 struct virtio_gpu_scanout *s,
119 uint32_t resource_id)
120 {
121 uint32_t width, height;
122 uint32_t pixels, *data;
123
124 data = virgl_renderer_get_cursor_data(resource_id, &width, &height);
125 if (!data) {
126 return;
127 }
128
129 if (width != s->current_cursor->width ||
130 height != s->current_cursor->height) {
131 free(data);
132 return;
133 }
134
135 pixels = s->current_cursor->width * s->current_cursor->height;
136 memcpy(s->current_cursor->data, data, pixels * sizeof(uint32_t));
137 free(data);
138 }
139
140 #endif
141
142 static void update_cursor(VirtIOGPU *g, struct virtio_gpu_update_cursor *cursor)
143 {
144 struct virtio_gpu_scanout *s;
145 bool move = cursor->hdr.type == VIRTIO_GPU_CMD_MOVE_CURSOR;
146
147 if (cursor->pos.scanout_id >= g->conf.max_outputs) {
148 return;
149 }
150 s = &g->scanout[cursor->pos.scanout_id];
151
152 trace_virtio_gpu_update_cursor(cursor->pos.scanout_id,
153 cursor->pos.x,
154 cursor->pos.y,
155 move ? "move" : "update",
156 cursor->resource_id);
157
158 if (!move) {
159 if (!s->current_cursor) {
160 s->current_cursor = cursor_alloc(64, 64);
161 }
162
163 s->current_cursor->hot_x = cursor->hot_x;
164 s->current_cursor->hot_y = cursor->hot_y;
165
166 if (cursor->resource_id > 0) {
167 VIRGL(g, update_cursor_data_virgl, update_cursor_data_simple,
168 g, s, cursor->resource_id);
169 }
170 dpy_cursor_define(s->con, s->current_cursor);
171
172 s->cursor = *cursor;
173 } else {
174 s->cursor.pos.x = cursor->pos.x;
175 s->cursor.pos.y = cursor->pos.y;
176 }
177 dpy_mouse_set(s->con, cursor->pos.x, cursor->pos.y,
178 cursor->resource_id ? 1 : 0);
179 }
180
181 static void virtio_gpu_get_config(VirtIODevice *vdev, uint8_t *config)
182 {
183 VirtIOGPU *g = VIRTIO_GPU(vdev);
184 memcpy(config, &g->virtio_config, sizeof(g->virtio_config));
185 }
186
187 static void virtio_gpu_set_config(VirtIODevice *vdev, const uint8_t *config)
188 {
189 VirtIOGPU *g = VIRTIO_GPU(vdev);
190 struct virtio_gpu_config vgconfig;
191
192 memcpy(&vgconfig, config, sizeof(g->virtio_config));
193
194 if (vgconfig.events_clear) {
195 g->virtio_config.events_read &= ~vgconfig.events_clear;
196 }
197 }
198
199 static uint64_t virtio_gpu_get_features(VirtIODevice *vdev, uint64_t features,
200 Error **errp)
201 {
202 VirtIOGPU *g = VIRTIO_GPU(vdev);
203
204 if (virtio_gpu_virgl_enabled(g->conf)) {
205 features |= (1 << VIRTIO_GPU_F_VIRGL);
206 }
207 return features;
208 }
209
210 static void virtio_gpu_set_features(VirtIODevice *vdev, uint64_t features)
211 {
212 static const uint32_t virgl = (1 << VIRTIO_GPU_F_VIRGL);
213 VirtIOGPU *g = VIRTIO_GPU(vdev);
214
215 g->use_virgl_renderer = ((features & virgl) == virgl);
216 trace_virtio_gpu_features(g->use_virgl_renderer);
217 }
218
219 static void virtio_gpu_notify_event(VirtIOGPU *g, uint32_t event_type)
220 {
221 g->virtio_config.events_read |= event_type;
222 virtio_notify_config(&g->parent_obj);
223 }
224
225 static struct virtio_gpu_simple_resource *
226 virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resource_id)
227 {
228 struct virtio_gpu_simple_resource *res;
229
230 QTAILQ_FOREACH(res, &g->reslist, next) {
231 if (res->resource_id == resource_id) {
232 return res;
233 }
234 }
235 return NULL;
236 }
237
238 void virtio_gpu_ctrl_response(VirtIOGPU *g,
239 struct virtio_gpu_ctrl_command *cmd,
240 struct virtio_gpu_ctrl_hdr *resp,
241 size_t resp_len)
242 {
243 size_t s;
244
245 if (cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_FENCE) {
246 resp->flags |= VIRTIO_GPU_FLAG_FENCE;
247 resp->fence_id = cmd->cmd_hdr.fence_id;
248 resp->ctx_id = cmd->cmd_hdr.ctx_id;
249 }
250 virtio_gpu_ctrl_hdr_bswap(resp);
251 s = iov_from_buf(cmd->elem.in_sg, cmd->elem.in_num, 0, resp, resp_len);
252 if (s != resp_len) {
253 qemu_log_mask(LOG_GUEST_ERROR,
254 "%s: response size incorrect %zu vs %zu\n",
255 __func__, s, resp_len);
256 }
257 virtqueue_push(cmd->vq, &cmd->elem, s);
258 virtio_notify(VIRTIO_DEVICE(g), cmd->vq);
259 cmd->finished = true;
260 }
261
262 void virtio_gpu_ctrl_response_nodata(VirtIOGPU *g,
263 struct virtio_gpu_ctrl_command *cmd,
264 enum virtio_gpu_ctrl_type type)
265 {
266 struct virtio_gpu_ctrl_hdr resp;
267
268 memset(&resp, 0, sizeof(resp));
269 resp.type = type;
270 virtio_gpu_ctrl_response(g, cmd, &resp, sizeof(resp));
271 }
272
273 static void
274 virtio_gpu_fill_display_info(VirtIOGPU *g,
275 struct virtio_gpu_resp_display_info *dpy_info)
276 {
277 int i;
278
279 for (i = 0; i < g->conf.max_outputs; i++) {
280 if (g->enabled_output_bitmask & (1 << i)) {
281 dpy_info->pmodes[i].enabled = 1;
282 dpy_info->pmodes[i].r.width = cpu_to_le32(g->req_state[i].width);
283 dpy_info->pmodes[i].r.height = cpu_to_le32(g->req_state[i].height);
284 }
285 }
286 }
287
288 void virtio_gpu_get_display_info(VirtIOGPU *g,
289 struct virtio_gpu_ctrl_command *cmd)
290 {
291 struct virtio_gpu_resp_display_info display_info;
292
293 trace_virtio_gpu_cmd_get_display_info();
294 memset(&display_info, 0, sizeof(display_info));
295 display_info.hdr.type = VIRTIO_GPU_RESP_OK_DISPLAY_INFO;
296 virtio_gpu_fill_display_info(g, &display_info);
297 virtio_gpu_ctrl_response(g, cmd, &display_info.hdr,
298 sizeof(display_info));
299 }
300
301 static pixman_format_code_t get_pixman_format(uint32_t virtio_gpu_format)
302 {
303 switch (virtio_gpu_format) {
304 case VIRTIO_GPU_FORMAT_B8G8R8X8_UNORM:
305 return PIXMAN_BE_b8g8r8x8;
306 case VIRTIO_GPU_FORMAT_B8G8R8A8_UNORM:
307 return PIXMAN_BE_b8g8r8a8;
308 case VIRTIO_GPU_FORMAT_X8R8G8B8_UNORM:
309 return PIXMAN_BE_x8r8g8b8;
310 case VIRTIO_GPU_FORMAT_A8R8G8B8_UNORM:
311 return PIXMAN_BE_a8r8g8b8;
312 case VIRTIO_GPU_FORMAT_R8G8B8X8_UNORM:
313 return PIXMAN_BE_r8g8b8x8;
314 case VIRTIO_GPU_FORMAT_R8G8B8A8_UNORM:
315 return PIXMAN_BE_r8g8b8a8;
316 case VIRTIO_GPU_FORMAT_X8B8G8R8_UNORM:
317 return PIXMAN_BE_x8b8g8r8;
318 case VIRTIO_GPU_FORMAT_A8B8G8R8_UNORM:
319 return PIXMAN_BE_a8b8g8r8;
320 default:
321 return 0;
322 }
323 }
324
325 static void virtio_gpu_resource_create_2d(VirtIOGPU *g,
326 struct virtio_gpu_ctrl_command *cmd)
327 {
328 pixman_format_code_t pformat;
329 struct virtio_gpu_simple_resource *res;
330 struct virtio_gpu_resource_create_2d c2d;
331
332 VIRTIO_GPU_FILL_CMD(c2d);
333 virtio_gpu_bswap_32(&c2d, sizeof(c2d));
334 trace_virtio_gpu_cmd_res_create_2d(c2d.resource_id, c2d.format,
335 c2d.width, c2d.height);
336
337 if (c2d.resource_id == 0) {
338 qemu_log_mask(LOG_GUEST_ERROR, "%s: resource id 0 is not allowed\n",
339 __func__);
340 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
341 return;
342 }
343
344 res = virtio_gpu_find_resource(g, c2d.resource_id);
345 if (res) {
346 qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already exists %d\n",
347 __func__, c2d.resource_id);
348 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
349 return;
350 }
351
352 res = g_new0(struct virtio_gpu_simple_resource, 1);
353
354 res->width = c2d.width;
355 res->height = c2d.height;
356 res->format = c2d.format;
357 res->resource_id = c2d.resource_id;
358
359 pformat = get_pixman_format(c2d.format);
360 if (!pformat) {
361 qemu_log_mask(LOG_GUEST_ERROR,
362 "%s: host couldn't handle guest format %d\n",
363 __func__, c2d.format);
364 g_free(res);
365 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
366 return;
367 }
368
369 res->hostmem = PIXMAN_FORMAT_BPP(pformat) * c2d.width * c2d.height;
370 if (res->hostmem + g->hostmem < g->conf.max_hostmem) {
371 res->image = pixman_image_create_bits(pformat,
372 c2d.width,
373 c2d.height,
374 NULL, 0);
375 }
376
377 if (!res->image) {
378 qemu_log_mask(LOG_GUEST_ERROR,
379 "%s: resource creation failed %d %d %d\n",
380 __func__, c2d.resource_id, c2d.width, c2d.height);
381 g_free(res);
382 cmd->error = VIRTIO_GPU_RESP_ERR_OUT_OF_MEMORY;
383 return;
384 }
385
386 QTAILQ_INSERT_HEAD(&g->reslist, res, next);
387 g->hostmem += res->hostmem;
388 }
389
390 static void virtio_gpu_resource_destroy(VirtIOGPU *g,
391 struct virtio_gpu_simple_resource *res)
392 {
393 pixman_image_unref(res->image);
394 virtio_gpu_cleanup_mapping(res);
395 QTAILQ_REMOVE(&g->reslist, res, next);
396 g->hostmem -= res->hostmem;
397 g_free(res);
398 }
399
400 static void virtio_gpu_resource_unref(VirtIOGPU *g,
401 struct virtio_gpu_ctrl_command *cmd)
402 {
403 struct virtio_gpu_simple_resource *res;
404 struct virtio_gpu_resource_unref unref;
405
406 VIRTIO_GPU_FILL_CMD(unref);
407 virtio_gpu_bswap_32(&unref, sizeof(unref));
408 trace_virtio_gpu_cmd_res_unref(unref.resource_id);
409
410 res = virtio_gpu_find_resource(g, unref.resource_id);
411 if (!res) {
412 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
413 __func__, unref.resource_id);
414 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
415 return;
416 }
417 virtio_gpu_resource_destroy(g, res);
418 }
419
420 static void virtio_gpu_transfer_to_host_2d(VirtIOGPU *g,
421 struct virtio_gpu_ctrl_command *cmd)
422 {
423 struct virtio_gpu_simple_resource *res;
424 int h;
425 uint32_t src_offset, dst_offset, stride;
426 int bpp;
427 pixman_format_code_t format;
428 struct virtio_gpu_transfer_to_host_2d t2d;
429
430 VIRTIO_GPU_FILL_CMD(t2d);
431 virtio_gpu_t2d_bswap(&t2d);
432 trace_virtio_gpu_cmd_res_xfer_toh_2d(t2d.resource_id);
433
434 res = virtio_gpu_find_resource(g, t2d.resource_id);
435 if (!res || !res->iov) {
436 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
437 __func__, t2d.resource_id);
438 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
439 return;
440 }
441
442 if (t2d.r.x > res->width ||
443 t2d.r.y > res->height ||
444 t2d.r.width > res->width ||
445 t2d.r.height > res->height ||
446 t2d.r.x + t2d.r.width > res->width ||
447 t2d.r.y + t2d.r.height > res->height) {
448 qemu_log_mask(LOG_GUEST_ERROR, "%s: transfer bounds outside resource"
449 " bounds for resource %d: %d %d %d %d vs %d %d\n",
450 __func__, t2d.resource_id, t2d.r.x, t2d.r.y,
451 t2d.r.width, t2d.r.height, res->width, res->height);
452 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
453 return;
454 }
455
456 format = pixman_image_get_format(res->image);
457 bpp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(format), 8);
458 stride = pixman_image_get_stride(res->image);
459
460 if (t2d.offset || t2d.r.x || t2d.r.y ||
461 t2d.r.width != pixman_image_get_width(res->image)) {
462 void *img_data = pixman_image_get_data(res->image);
463 for (h = 0; h < t2d.r.height; h++) {
464 src_offset = t2d.offset + stride * h;
465 dst_offset = (t2d.r.y + h) * stride + (t2d.r.x * bpp);
466
467 iov_to_buf(res->iov, res->iov_cnt, src_offset,
468 (uint8_t *)img_data
469 + dst_offset, t2d.r.width * bpp);
470 }
471 } else {
472 iov_to_buf(res->iov, res->iov_cnt, 0,
473 pixman_image_get_data(res->image),
474 pixman_image_get_stride(res->image)
475 * pixman_image_get_height(res->image));
476 }
477 }
478
479 static void virtio_gpu_resource_flush(VirtIOGPU *g,
480 struct virtio_gpu_ctrl_command *cmd)
481 {
482 struct virtio_gpu_simple_resource *res;
483 struct virtio_gpu_resource_flush rf;
484 pixman_region16_t flush_region;
485 int i;
486
487 VIRTIO_GPU_FILL_CMD(rf);
488 virtio_gpu_bswap_32(&rf, sizeof(rf));
489 trace_virtio_gpu_cmd_res_flush(rf.resource_id,
490 rf.r.width, rf.r.height, rf.r.x, rf.r.y);
491
492 res = virtio_gpu_find_resource(g, rf.resource_id);
493 if (!res) {
494 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
495 __func__, rf.resource_id);
496 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
497 return;
498 }
499
500 if (rf.r.x > res->width ||
501 rf.r.y > res->height ||
502 rf.r.width > res->width ||
503 rf.r.height > res->height ||
504 rf.r.x + rf.r.width > res->width ||
505 rf.r.y + rf.r.height > res->height) {
506 qemu_log_mask(LOG_GUEST_ERROR, "%s: flush bounds outside resource"
507 " bounds for resource %d: %d %d %d %d vs %d %d\n",
508 __func__, rf.resource_id, rf.r.x, rf.r.y,
509 rf.r.width, rf.r.height, res->width, res->height);
510 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
511 return;
512 }
513
514 pixman_region_init_rect(&flush_region,
515 rf.r.x, rf.r.y, rf.r.width, rf.r.height);
516 for (i = 0; i < g->conf.max_outputs; i++) {
517 struct virtio_gpu_scanout *scanout;
518 pixman_region16_t region, finalregion;
519 pixman_box16_t *extents;
520
521 if (!(res->scanout_bitmask & (1 << i))) {
522 continue;
523 }
524 scanout = &g->scanout[i];
525
526 pixman_region_init(&finalregion);
527 pixman_region_init_rect(&region, scanout->x, scanout->y,
528 scanout->width, scanout->height);
529
530 pixman_region_intersect(&finalregion, &flush_region, &region);
531 pixman_region_translate(&finalregion, -scanout->x, -scanout->y);
532 extents = pixman_region_extents(&finalregion);
533 /* work out the area we need to update for each console */
534 dpy_gfx_update(g->scanout[i].con,
535 extents->x1, extents->y1,
536 extents->x2 - extents->x1,
537 extents->y2 - extents->y1);
538
539 pixman_region_fini(&region);
540 pixman_region_fini(&finalregion);
541 }
542 pixman_region_fini(&flush_region);
543 }
544
545 static void virtio_unref_resource(pixman_image_t *image, void *data)
546 {
547 pixman_image_unref(data);
548 }
549
550 static void virtio_gpu_set_scanout(VirtIOGPU *g,
551 struct virtio_gpu_ctrl_command *cmd)
552 {
553 struct virtio_gpu_simple_resource *res;
554 struct virtio_gpu_scanout *scanout;
555 pixman_format_code_t format;
556 uint32_t offset;
557 int bpp;
558 struct virtio_gpu_set_scanout ss;
559
560 VIRTIO_GPU_FILL_CMD(ss);
561 virtio_gpu_bswap_32(&ss, sizeof(ss));
562 trace_virtio_gpu_cmd_set_scanout(ss.scanout_id, ss.resource_id,
563 ss.r.width, ss.r.height, ss.r.x, ss.r.y);
564
565 if (ss.scanout_id >= g->conf.max_outputs) {
566 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d",
567 __func__, ss.scanout_id);
568 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID;
569 return;
570 }
571
572 g->enable = 1;
573 if (ss.resource_id == 0) {
574 scanout = &g->scanout[ss.scanout_id];
575 if (scanout->resource_id) {
576 res = virtio_gpu_find_resource(g, scanout->resource_id);
577 if (res) {
578 res->scanout_bitmask &= ~(1 << ss.scanout_id);
579 }
580 }
581 if (ss.scanout_id == 0) {
582 qemu_log_mask(LOG_GUEST_ERROR,
583 "%s: illegal scanout id specified %d",
584 __func__, ss.scanout_id);
585 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID;
586 return;
587 }
588 dpy_gfx_replace_surface(g->scanout[ss.scanout_id].con, NULL);
589 scanout->ds = NULL;
590 scanout->width = 0;
591 scanout->height = 0;
592 return;
593 }
594
595 /* create a surface for this scanout */
596 res = virtio_gpu_find_resource(g, ss.resource_id);
597 if (!res) {
598 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
599 __func__, ss.resource_id);
600 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
601 return;
602 }
603
604 if (ss.r.x > res->width ||
605 ss.r.y > res->height ||
606 ss.r.width > res->width ||
607 ss.r.height > res->height ||
608 ss.r.x + ss.r.width > res->width ||
609 ss.r.y + ss.r.height > res->height) {
610 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout %d bounds for"
611 " resource %d, (%d,%d)+%d,%d vs %d %d\n",
612 __func__, ss.scanout_id, ss.resource_id, ss.r.x, ss.r.y,
613 ss.r.width, ss.r.height, res->width, res->height);
614 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
615 return;
616 }
617
618 scanout = &g->scanout[ss.scanout_id];
619
620 format = pixman_image_get_format(res->image);
621 bpp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(format), 8);
622 offset = (ss.r.x * bpp) + ss.r.y * pixman_image_get_stride(res->image);
623 if (!scanout->ds || surface_data(scanout->ds)
624 != ((uint8_t *)pixman_image_get_data(res->image) + offset) ||
625 scanout->width != ss.r.width ||
626 scanout->height != ss.r.height) {
627 pixman_image_t *rect;
628 void *ptr = (uint8_t *)pixman_image_get_data(res->image) + offset;
629 rect = pixman_image_create_bits(format, ss.r.width, ss.r.height, ptr,
630 pixman_image_get_stride(res->image));
631 pixman_image_ref(res->image);
632 pixman_image_set_destroy_function(rect, virtio_unref_resource,
633 res->image);
634 /* realloc the surface ptr */
635 scanout->ds = qemu_create_displaysurface_pixman(rect);
636 if (!scanout->ds) {
637 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
638 return;
639 }
640 pixman_image_unref(rect);
641 dpy_gfx_replace_surface(g->scanout[ss.scanout_id].con, scanout->ds);
642 }
643
644 res->scanout_bitmask |= (1 << ss.scanout_id);
645 scanout->resource_id = ss.resource_id;
646 scanout->x = ss.r.x;
647 scanout->y = ss.r.y;
648 scanout->width = ss.r.width;
649 scanout->height = ss.r.height;
650 }
651
652 int virtio_gpu_create_mapping_iov(struct virtio_gpu_resource_attach_backing *ab,
653 struct virtio_gpu_ctrl_command *cmd,
654 uint64_t **addr, struct iovec **iov)
655 {
656 struct virtio_gpu_mem_entry *ents;
657 size_t esize, s;
658 int i;
659
660 if (ab->nr_entries > 16384) {
661 qemu_log_mask(LOG_GUEST_ERROR,
662 "%s: nr_entries is too big (%d > 16384)\n",
663 __func__, ab->nr_entries);
664 return -1;
665 }
666
667 esize = sizeof(*ents) * ab->nr_entries;
668 ents = g_malloc(esize);
669 s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num,
670 sizeof(*ab), ents, esize);
671 if (s != esize) {
672 qemu_log_mask(LOG_GUEST_ERROR,
673 "%s: command data size incorrect %zu vs %zu\n",
674 __func__, s, esize);
675 g_free(ents);
676 return -1;
677 }
678
679 *iov = g_malloc0(sizeof(struct iovec) * ab->nr_entries);
680 if (addr) {
681 *addr = g_malloc0(sizeof(uint64_t) * ab->nr_entries);
682 }
683 for (i = 0; i < ab->nr_entries; i++) {
684 uint64_t a = le64_to_cpu(ents[i].addr);
685 uint32_t l = le32_to_cpu(ents[i].length);
686 hwaddr len = l;
687 (*iov)[i].iov_len = l;
688 (*iov)[i].iov_base = cpu_physical_memory_map(a, &len, 1);
689 if (addr) {
690 (*addr)[i] = a;
691 }
692 if (!(*iov)[i].iov_base || len != l) {
693 qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to map MMIO memory for"
694 " resource %d element %d\n",
695 __func__, ab->resource_id, i);
696 virtio_gpu_cleanup_mapping_iov(*iov, i);
697 g_free(ents);
698 *iov = NULL;
699 if (addr) {
700 g_free(*addr);
701 *addr = NULL;
702 }
703 return -1;
704 }
705 }
706 g_free(ents);
707 return 0;
708 }
709
710 void virtio_gpu_cleanup_mapping_iov(struct iovec *iov, uint32_t count)
711 {
712 int i;
713
714 for (i = 0; i < count; i++) {
715 cpu_physical_memory_unmap(iov[i].iov_base, iov[i].iov_len, 1,
716 iov[i].iov_len);
717 }
718 g_free(iov);
719 }
720
721 static void virtio_gpu_cleanup_mapping(struct virtio_gpu_simple_resource *res)
722 {
723 virtio_gpu_cleanup_mapping_iov(res->iov, res->iov_cnt);
724 res->iov = NULL;
725 res->iov_cnt = 0;
726 g_free(res->addrs);
727 res->addrs = NULL;
728 }
729
730 static void
731 virtio_gpu_resource_attach_backing(VirtIOGPU *g,
732 struct virtio_gpu_ctrl_command *cmd)
733 {
734 struct virtio_gpu_simple_resource *res;
735 struct virtio_gpu_resource_attach_backing ab;
736 int ret;
737
738 VIRTIO_GPU_FILL_CMD(ab);
739 virtio_gpu_bswap_32(&ab, sizeof(ab));
740 trace_virtio_gpu_cmd_res_back_attach(ab.resource_id);
741
742 res = virtio_gpu_find_resource(g, ab.resource_id);
743 if (!res) {
744 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
745 __func__, ab.resource_id);
746 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
747 return;
748 }
749
750 if (res->iov) {
751 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
752 return;
753 }
754
755 ret = virtio_gpu_create_mapping_iov(&ab, cmd, &res->addrs, &res->iov);
756 if (ret != 0) {
757 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
758 return;
759 }
760
761 res->iov_cnt = ab.nr_entries;
762 }
763
764 static void
765 virtio_gpu_resource_detach_backing(VirtIOGPU *g,
766 struct virtio_gpu_ctrl_command *cmd)
767 {
768 struct virtio_gpu_simple_resource *res;
769 struct virtio_gpu_resource_detach_backing detach;
770
771 VIRTIO_GPU_FILL_CMD(detach);
772 virtio_gpu_bswap_32(&detach, sizeof(detach));
773 trace_virtio_gpu_cmd_res_back_detach(detach.resource_id);
774
775 res = virtio_gpu_find_resource(g, detach.resource_id);
776 if (!res || !res->iov) {
777 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
778 __func__, detach.resource_id);
779 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
780 return;
781 }
782 virtio_gpu_cleanup_mapping(res);
783 }
784
785 static void virtio_gpu_simple_process_cmd(VirtIOGPU *g,
786 struct virtio_gpu_ctrl_command *cmd)
787 {
788 VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr);
789 virtio_gpu_ctrl_hdr_bswap(&cmd->cmd_hdr);
790
791 switch (cmd->cmd_hdr.type) {
792 case VIRTIO_GPU_CMD_GET_DISPLAY_INFO:
793 virtio_gpu_get_display_info(g, cmd);
794 break;
795 case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D:
796 virtio_gpu_resource_create_2d(g, cmd);
797 break;
798 case VIRTIO_GPU_CMD_RESOURCE_UNREF:
799 virtio_gpu_resource_unref(g, cmd);
800 break;
801 case VIRTIO_GPU_CMD_RESOURCE_FLUSH:
802 virtio_gpu_resource_flush(g, cmd);
803 break;
804 case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D:
805 virtio_gpu_transfer_to_host_2d(g, cmd);
806 break;
807 case VIRTIO_GPU_CMD_SET_SCANOUT:
808 virtio_gpu_set_scanout(g, cmd);
809 break;
810 case VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING:
811 virtio_gpu_resource_attach_backing(g, cmd);
812 break;
813 case VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING:
814 virtio_gpu_resource_detach_backing(g, cmd);
815 break;
816 default:
817 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
818 break;
819 }
820 if (!cmd->finished) {
821 virtio_gpu_ctrl_response_nodata(g, cmd, cmd->error ? cmd->error :
822 VIRTIO_GPU_RESP_OK_NODATA);
823 }
824 }
825
826 static void virtio_gpu_handle_ctrl_cb(VirtIODevice *vdev, VirtQueue *vq)
827 {
828 VirtIOGPU *g = VIRTIO_GPU(vdev);
829 qemu_bh_schedule(g->ctrl_bh);
830 }
831
832 static void virtio_gpu_handle_cursor_cb(VirtIODevice *vdev, VirtQueue *vq)
833 {
834 VirtIOGPU *g = VIRTIO_GPU(vdev);
835 qemu_bh_schedule(g->cursor_bh);
836 }
837
838 void virtio_gpu_process_cmdq(VirtIOGPU *g)
839 {
840 struct virtio_gpu_ctrl_command *cmd;
841
842 while (!QTAILQ_EMPTY(&g->cmdq)) {
843 cmd = QTAILQ_FIRST(&g->cmdq);
844
845 /* process command */
846 VIRGL(g, virtio_gpu_virgl_process_cmd, virtio_gpu_simple_process_cmd,
847 g, cmd);
848 if (cmd->waiting) {
849 break;
850 }
851 QTAILQ_REMOVE(&g->cmdq, cmd, next);
852 if (virtio_gpu_stats_enabled(g->conf)) {
853 g->stats.requests++;
854 }
855
856 if (!cmd->finished) {
857 QTAILQ_INSERT_TAIL(&g->fenceq, cmd, next);
858 g->inflight++;
859 if (virtio_gpu_stats_enabled(g->conf)) {
860 if (g->stats.max_inflight < g->inflight) {
861 g->stats.max_inflight = g->inflight;
862 }
863 fprintf(stderr, "inflight: %3d (+)\r", g->inflight);
864 }
865 } else {
866 g_free(cmd);
867 }
868 }
869 }
870
871 static void virtio_gpu_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
872 {
873 VirtIOGPU *g = VIRTIO_GPU(vdev);
874 struct virtio_gpu_ctrl_command *cmd;
875
876 if (!virtio_queue_ready(vq)) {
877 return;
878 }
879
880 #ifdef CONFIG_VIRGL
881 if (!g->renderer_inited && g->use_virgl_renderer) {
882 virtio_gpu_virgl_init(g);
883 g->renderer_inited = true;
884 }
885 #endif
886
887 cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command));
888 while (cmd) {
889 cmd->vq = vq;
890 cmd->error = 0;
891 cmd->finished = false;
892 cmd->waiting = false;
893 QTAILQ_INSERT_TAIL(&g->cmdq, cmd, next);
894 cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command));
895 }
896
897 virtio_gpu_process_cmdq(g);
898
899 #ifdef CONFIG_VIRGL
900 if (g->use_virgl_renderer) {
901 virtio_gpu_virgl_fence_poll(g);
902 }
903 #endif
904 }
905
906 static void virtio_gpu_ctrl_bh(void *opaque)
907 {
908 VirtIOGPU *g = opaque;
909 virtio_gpu_handle_ctrl(&g->parent_obj, g->ctrl_vq);
910 }
911
912 static void virtio_gpu_handle_cursor(VirtIODevice *vdev, VirtQueue *vq)
913 {
914 VirtIOGPU *g = VIRTIO_GPU(vdev);
915 VirtQueueElement *elem;
916 size_t s;
917 struct virtio_gpu_update_cursor cursor_info;
918
919 if (!virtio_queue_ready(vq)) {
920 return;
921 }
922 for (;;) {
923 elem = virtqueue_pop(vq, sizeof(VirtQueueElement));
924 if (!elem) {
925 break;
926 }
927
928 s = iov_to_buf(elem->out_sg, elem->out_num, 0,
929 &cursor_info, sizeof(cursor_info));
930 if (s != sizeof(cursor_info)) {
931 qemu_log_mask(LOG_GUEST_ERROR,
932 "%s: cursor size incorrect %zu vs %zu\n",
933 __func__, s, sizeof(cursor_info));
934 } else {
935 virtio_gpu_bswap_32(&cursor_info, sizeof(cursor_info));
936 update_cursor(g, &cursor_info);
937 }
938 virtqueue_push(vq, elem, 0);
939 virtio_notify(vdev, vq);
940 g_free(elem);
941 }
942 }
943
944 static void virtio_gpu_cursor_bh(void *opaque)
945 {
946 VirtIOGPU *g = opaque;
947 virtio_gpu_handle_cursor(&g->parent_obj, g->cursor_vq);
948 }
949
950 static void virtio_gpu_invalidate_display(void *opaque)
951 {
952 }
953
954 static void virtio_gpu_update_display(void *opaque)
955 {
956 }
957
958 static void virtio_gpu_text_update(void *opaque, console_ch_t *chardata)
959 {
960 }
961
962 static int virtio_gpu_ui_info(void *opaque, uint32_t idx, QemuUIInfo *info)
963 {
964 VirtIOGPU *g = opaque;
965
966 if (idx >= g->conf.max_outputs) {
967 return -1;
968 }
969
970 g->req_state[idx].x = info->xoff;
971 g->req_state[idx].y = info->yoff;
972 g->req_state[idx].width = info->width;
973 g->req_state[idx].height = info->height;
974
975 if (info->width && info->height) {
976 g->enabled_output_bitmask |= (1 << idx);
977 } else {
978 g->enabled_output_bitmask &= ~(1 << idx);
979 }
980
981 /* send event to guest */
982 virtio_gpu_notify_event(g, VIRTIO_GPU_EVENT_DISPLAY);
983 return 0;
984 }
985
986 const GraphicHwOps virtio_gpu_ops = {
987 .invalidate = virtio_gpu_invalidate_display,
988 .gfx_update = virtio_gpu_update_display,
989 .text_update = virtio_gpu_text_update,
990 .ui_info = virtio_gpu_ui_info,
991 #ifdef CONFIG_VIRGL
992 .gl_block = virtio_gpu_gl_block,
993 #endif
994 };
995
996 static const VMStateDescription vmstate_virtio_gpu_scanout = {
997 .name = "virtio-gpu-one-scanout",
998 .version_id = 1,
999 .fields = (VMStateField[]) {
1000 VMSTATE_UINT32(resource_id, struct virtio_gpu_scanout),
1001 VMSTATE_UINT32(width, struct virtio_gpu_scanout),
1002 VMSTATE_UINT32(height, struct virtio_gpu_scanout),
1003 VMSTATE_INT32(x, struct virtio_gpu_scanout),
1004 VMSTATE_INT32(y, struct virtio_gpu_scanout),
1005 VMSTATE_UINT32(cursor.resource_id, struct virtio_gpu_scanout),
1006 VMSTATE_UINT32(cursor.hot_x, struct virtio_gpu_scanout),
1007 VMSTATE_UINT32(cursor.hot_y, struct virtio_gpu_scanout),
1008 VMSTATE_UINT32(cursor.pos.x, struct virtio_gpu_scanout),
1009 VMSTATE_UINT32(cursor.pos.y, struct virtio_gpu_scanout),
1010 VMSTATE_END_OF_LIST()
1011 },
1012 };
1013
1014 static const VMStateDescription vmstate_virtio_gpu_scanouts = {
1015 .name = "virtio-gpu-scanouts",
1016 .version_id = 1,
1017 .fields = (VMStateField[]) {
1018 VMSTATE_INT32(enable, struct VirtIOGPU),
1019 VMSTATE_UINT32_EQUAL(conf.max_outputs, struct VirtIOGPU, NULL),
1020 VMSTATE_STRUCT_VARRAY_UINT32(scanout, struct VirtIOGPU,
1021 conf.max_outputs, 1,
1022 vmstate_virtio_gpu_scanout,
1023 struct virtio_gpu_scanout),
1024 VMSTATE_END_OF_LIST()
1025 },
1026 };
1027
1028 static int virtio_gpu_save(QEMUFile *f, void *opaque, size_t size,
1029 VMStateField *field, QJSON *vmdesc)
1030 {
1031 VirtIOGPU *g = opaque;
1032 struct virtio_gpu_simple_resource *res;
1033 int i;
1034
1035 /* in 2d mode we should never find unprocessed commands here */
1036 assert(QTAILQ_EMPTY(&g->cmdq));
1037
1038 QTAILQ_FOREACH(res, &g->reslist, next) {
1039 qemu_put_be32(f, res->resource_id);
1040 qemu_put_be32(f, res->width);
1041 qemu_put_be32(f, res->height);
1042 qemu_put_be32(f, res->format);
1043 qemu_put_be32(f, res->iov_cnt);
1044 for (i = 0; i < res->iov_cnt; i++) {
1045 qemu_put_be64(f, res->addrs[i]);
1046 qemu_put_be32(f, res->iov[i].iov_len);
1047 }
1048 qemu_put_buffer(f, (void *)pixman_image_get_data(res->image),
1049 pixman_image_get_stride(res->image) * res->height);
1050 }
1051 qemu_put_be32(f, 0); /* end of list */
1052
1053 return vmstate_save_state(f, &vmstate_virtio_gpu_scanouts, g, NULL);
1054 }
1055
1056 static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size,
1057 VMStateField *field)
1058 {
1059 VirtIOGPU *g = opaque;
1060 struct virtio_gpu_simple_resource *res;
1061 struct virtio_gpu_scanout *scanout;
1062 uint32_t resource_id, pformat;
1063 int i;
1064
1065 g->hostmem = 0;
1066
1067 resource_id = qemu_get_be32(f);
1068 while (resource_id != 0) {
1069 res = g_new0(struct virtio_gpu_simple_resource, 1);
1070 res->resource_id = resource_id;
1071 res->width = qemu_get_be32(f);
1072 res->height = qemu_get_be32(f);
1073 res->format = qemu_get_be32(f);
1074 res->iov_cnt = qemu_get_be32(f);
1075
1076 /* allocate */
1077 pformat = get_pixman_format(res->format);
1078 if (!pformat) {
1079 g_free(res);
1080 return -EINVAL;
1081 }
1082 res->image = pixman_image_create_bits(pformat,
1083 res->width, res->height,
1084 NULL, 0);
1085 if (!res->image) {
1086 g_free(res);
1087 return -EINVAL;
1088 }
1089
1090 res->hostmem = PIXMAN_FORMAT_BPP(pformat) * res->width * res->height;
1091
1092 res->addrs = g_new(uint64_t, res->iov_cnt);
1093 res->iov = g_new(struct iovec, res->iov_cnt);
1094
1095 /* read data */
1096 for (i = 0; i < res->iov_cnt; i++) {
1097 res->addrs[i] = qemu_get_be64(f);
1098 res->iov[i].iov_len = qemu_get_be32(f);
1099 }
1100 qemu_get_buffer(f, (void *)pixman_image_get_data(res->image),
1101 pixman_image_get_stride(res->image) * res->height);
1102
1103 /* restore mapping */
1104 for (i = 0; i < res->iov_cnt; i++) {
1105 hwaddr len = res->iov[i].iov_len;
1106 res->iov[i].iov_base =
1107 cpu_physical_memory_map(res->addrs[i], &len, 1);
1108 if (!res->iov[i].iov_base || len != res->iov[i].iov_len) {
1109 /* Clean up the half-a-mapping we just created... */
1110 if (res->iov[i].iov_base) {
1111 cpu_physical_memory_unmap(res->iov[i].iov_base,
1112 len, 0, 0);
1113 }
1114 /* ...and the mappings for previous loop iterations */
1115 res->iov_cnt = i;
1116 virtio_gpu_cleanup_mapping(res);
1117 pixman_image_unref(res->image);
1118 g_free(res);
1119 return -EINVAL;
1120 }
1121 }
1122
1123 QTAILQ_INSERT_HEAD(&g->reslist, res, next);
1124 g->hostmem += res->hostmem;
1125
1126 resource_id = qemu_get_be32(f);
1127 }
1128
1129 /* load & apply scanout state */
1130 vmstate_load_state(f, &vmstate_virtio_gpu_scanouts, g, 1);
1131 for (i = 0; i < g->conf.max_outputs; i++) {
1132 scanout = &g->scanout[i];
1133 if (!scanout->resource_id) {
1134 continue;
1135 }
1136 res = virtio_gpu_find_resource(g, scanout->resource_id);
1137 if (!res) {
1138 return -EINVAL;
1139 }
1140 scanout->ds = qemu_create_displaysurface_pixman(res->image);
1141 if (!scanout->ds) {
1142 return -EINVAL;
1143 }
1144
1145 dpy_gfx_replace_surface(scanout->con, scanout->ds);
1146 dpy_gfx_update(scanout->con, 0, 0, scanout->width, scanout->height);
1147 if (scanout->cursor.resource_id) {
1148 update_cursor(g, &scanout->cursor);
1149 }
1150 res->scanout_bitmask |= (1 << i);
1151 }
1152
1153 return 0;
1154 }
1155
1156 static void virtio_gpu_device_realize(DeviceState *qdev, Error **errp)
1157 {
1158 VirtIODevice *vdev = VIRTIO_DEVICE(qdev);
1159 VirtIOGPU *g = VIRTIO_GPU(qdev);
1160 bool have_virgl;
1161 Error *local_err = NULL;
1162 int i;
1163
1164 if (g->conf.max_outputs > VIRTIO_GPU_MAX_SCANOUTS) {
1165 error_setg(errp, "invalid max_outputs > %d", VIRTIO_GPU_MAX_SCANOUTS);
1166 return;
1167 }
1168
1169 g->use_virgl_renderer = false;
1170 #if !defined(CONFIG_VIRGL) || defined(HOST_WORDS_BIGENDIAN)
1171 have_virgl = false;
1172 #else
1173 have_virgl = display_opengl;
1174 #endif
1175 if (!have_virgl) {
1176 g->conf.flags &= ~(1 << VIRTIO_GPU_FLAG_VIRGL_ENABLED);
1177 }
1178
1179 if (virtio_gpu_virgl_enabled(g->conf)) {
1180 error_setg(&g->migration_blocker, "virgl is not yet migratable");
1181 migrate_add_blocker(g->migration_blocker, &local_err);
1182 if (local_err) {
1183 error_propagate(errp, local_err);
1184 error_free(g->migration_blocker);
1185 return;
1186 }
1187 }
1188
1189 g->config_size = sizeof(struct virtio_gpu_config);
1190 g->virtio_config.num_scanouts = cpu_to_le32(g->conf.max_outputs);
1191 virtio_init(VIRTIO_DEVICE(g), "virtio-gpu", VIRTIO_ID_GPU,
1192 g->config_size);
1193
1194 g->req_state[0].width = g->conf.xres;
1195 g->req_state[0].height = g->conf.yres;
1196
1197 if (virtio_gpu_virgl_enabled(g->conf)) {
1198 /* use larger control queue in 3d mode */
1199 g->ctrl_vq = virtio_add_queue(vdev, 256, virtio_gpu_handle_ctrl_cb);
1200 g->cursor_vq = virtio_add_queue(vdev, 16, virtio_gpu_handle_cursor_cb);
1201 g->virtio_config.num_capsets = 1;
1202 } else {
1203 g->ctrl_vq = virtio_add_queue(vdev, 64, virtio_gpu_handle_ctrl_cb);
1204 g->cursor_vq = virtio_add_queue(vdev, 16, virtio_gpu_handle_cursor_cb);
1205 }
1206
1207 g->ctrl_bh = qemu_bh_new(virtio_gpu_ctrl_bh, g);
1208 g->cursor_bh = qemu_bh_new(virtio_gpu_cursor_bh, g);
1209 QTAILQ_INIT(&g->reslist);
1210 QTAILQ_INIT(&g->cmdq);
1211 QTAILQ_INIT(&g->fenceq);
1212
1213 g->enabled_output_bitmask = 1;
1214 g->qdev = qdev;
1215
1216 for (i = 0; i < g->conf.max_outputs; i++) {
1217 g->scanout[i].con =
1218 graphic_console_init(DEVICE(g), i, &virtio_gpu_ops, g);
1219 if (i > 0) {
1220 dpy_gfx_replace_surface(g->scanout[i].con, NULL);
1221 }
1222 }
1223 }
1224
1225 static void virtio_gpu_device_unrealize(DeviceState *qdev, Error **errp)
1226 {
1227 VirtIOGPU *g = VIRTIO_GPU(qdev);
1228 if (g->migration_blocker) {
1229 migrate_del_blocker(g->migration_blocker);
1230 error_free(g->migration_blocker);
1231 }
1232 }
1233
1234 static void virtio_gpu_instance_init(Object *obj)
1235 {
1236 }
1237
1238 static void virtio_gpu_reset(VirtIODevice *vdev)
1239 {
1240 VirtIOGPU *g = VIRTIO_GPU(vdev);
1241 struct virtio_gpu_simple_resource *res, *tmp;
1242 int i;
1243
1244 g->enable = 0;
1245
1246 QTAILQ_FOREACH_SAFE(res, &g->reslist, next, tmp) {
1247 virtio_gpu_resource_destroy(g, res);
1248 }
1249 for (i = 0; i < g->conf.max_outputs; i++) {
1250 g->scanout[i].resource_id = 0;
1251 g->scanout[i].width = 0;
1252 g->scanout[i].height = 0;
1253 g->scanout[i].x = 0;
1254 g->scanout[i].y = 0;
1255 g->scanout[i].ds = NULL;
1256 }
1257
1258 #ifdef CONFIG_VIRGL
1259 if (g->use_virgl_renderer) {
1260 virtio_gpu_virgl_reset(g);
1261 g->use_virgl_renderer = 0;
1262 }
1263 #endif
1264 }
1265
1266 /*
1267 * For historical reasons virtio_gpu does not adhere to virtio migration
1268 * scheme as described in doc/virtio-migration.txt, in a sense that no
1269 * save/load callback are provided to the core. Instead the device data
1270 * is saved/loaded after the core data.
1271 *
1272 * Because of this we need a special vmsd.
1273 */
1274 static const VMStateDescription vmstate_virtio_gpu = {
1275 .name = "virtio-gpu",
1276 .minimum_version_id = VIRTIO_GPU_VM_VERSION,
1277 .version_id = VIRTIO_GPU_VM_VERSION,
1278 .fields = (VMStateField[]) {
1279 VMSTATE_VIRTIO_DEVICE /* core */,
1280 {
1281 .name = "virtio-gpu",
1282 .info = &(const VMStateInfo) {
1283 .name = "virtio-gpu",
1284 .get = virtio_gpu_load,
1285 .put = virtio_gpu_save,
1286 },
1287 .flags = VMS_SINGLE,
1288 } /* device */,
1289 VMSTATE_END_OF_LIST()
1290 },
1291 };
1292
1293 static Property virtio_gpu_properties[] = {
1294 DEFINE_PROP_UINT32("max_outputs", VirtIOGPU, conf.max_outputs, 1),
1295 DEFINE_PROP_SIZE("max_hostmem", VirtIOGPU, conf.max_hostmem,
1296 256 * 1024 * 1024),
1297 #ifdef CONFIG_VIRGL
1298 DEFINE_PROP_BIT("virgl", VirtIOGPU, conf.flags,
1299 VIRTIO_GPU_FLAG_VIRGL_ENABLED, true),
1300 DEFINE_PROP_BIT("stats", VirtIOGPU, conf.flags,
1301 VIRTIO_GPU_FLAG_STATS_ENABLED, false),
1302 #endif
1303 DEFINE_PROP_UINT32("xres", VirtIOGPU, conf.xres, 1024),
1304 DEFINE_PROP_UINT32("yres", VirtIOGPU, conf.yres, 768),
1305 DEFINE_PROP_END_OF_LIST(),
1306 };
1307
1308 static void virtio_gpu_class_init(ObjectClass *klass, void *data)
1309 {
1310 DeviceClass *dc = DEVICE_CLASS(klass);
1311 VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
1312
1313 vdc->realize = virtio_gpu_device_realize;
1314 vdc->unrealize = virtio_gpu_device_unrealize;
1315 vdc->get_config = virtio_gpu_get_config;
1316 vdc->set_config = virtio_gpu_set_config;
1317 vdc->get_features = virtio_gpu_get_features;
1318 vdc->set_features = virtio_gpu_set_features;
1319
1320 vdc->reset = virtio_gpu_reset;
1321
1322 set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
1323 dc->props = virtio_gpu_properties;
1324 dc->vmsd = &vmstate_virtio_gpu;
1325 dc->hotpluggable = false;
1326 }
1327
1328 static const TypeInfo virtio_gpu_info = {
1329 .name = TYPE_VIRTIO_GPU,
1330 .parent = TYPE_VIRTIO_DEVICE,
1331 .instance_size = sizeof(VirtIOGPU),
1332 .instance_init = virtio_gpu_instance_init,
1333 .class_init = virtio_gpu_class_init,
1334 };
1335
1336 static void virtio_register_types(void)
1337 {
1338 type_register_static(&virtio_gpu_info);
1339 }
1340
1341 type_init(virtio_register_types)
1342
1343 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctrl_hdr) != 24);
1344 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_update_cursor) != 56);
1345 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_unref) != 32);
1346 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_create_2d) != 40);
1347 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_set_scanout) != 48);
1348 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_flush) != 48);
1349 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_transfer_to_host_2d) != 56);
1350 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_mem_entry) != 16);
1351 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_attach_backing) != 32);
1352 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_detach_backing) != 32);
1353 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resp_display_info) != 408);
1354
1355 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_transfer_host_3d) != 72);
1356 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_create_3d) != 72);
1357 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctx_create) != 96);
1358 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctx_destroy) != 24);
1359 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctx_resource) != 32);
1360 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_cmd_submit) != 32);
1361 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_get_capset_info) != 32);
1362 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resp_capset_info) != 40);
1363 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_get_capset) != 32);
1364 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resp_capset) != 24);
QEmu