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Merge remote-tracking branch 'remotes/stefanberger/tags/pull-tpm-2018-12-04-1' into...
[qemu.git] / hw / display / virtio-gpu.c
blobc6fab56f9ba138d6cd09509ec9f003972cf3b75b
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/units.h"
16 #include "qemu-common.h"
17 #include "qemu/iov.h"
18 #include "ui/console.h"
19 #include "trace.h"
20 #include "sysemu/dma.h"
21 #include "hw/virtio/virtio.h"
22 #include "hw/virtio/virtio-gpu.h"
23 #include "hw/virtio/virtio-bus.h"
24 #include "migration/blocker.h"
25 #include "qemu/log.h"
26 #include "qapi/error.h"
27
28 #define VIRTIO_GPU_VM_VERSION 1
29
30 static struct virtio_gpu_simple_resource*
31 virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resource_id);
32
33 static void virtio_gpu_cleanup_mapping(VirtIOGPU *g,
34 struct virtio_gpu_simple_resource *res);
35
36 static void
37 virtio_gpu_ctrl_hdr_bswap(struct virtio_gpu_ctrl_hdr *hdr)
38 {
39 le32_to_cpus(&hdr->type);
40 le32_to_cpus(&hdr->flags);
41 le64_to_cpus(&hdr->fence_id);
42 le32_to_cpus(&hdr->ctx_id);
43 le32_to_cpus(&hdr->padding);
44 }
45
46 static void virtio_gpu_bswap_32(void *ptr,
47 size_t size)
48 {
49 #ifdef HOST_WORDS_BIGENDIAN
50
51 size_t i;
52 struct virtio_gpu_ctrl_hdr *hdr = (struct virtio_gpu_ctrl_hdr *) ptr;
53
54 virtio_gpu_ctrl_hdr_bswap(hdr);
55
56 i = sizeof(struct virtio_gpu_ctrl_hdr);
57 while (i < size) {
58 le32_to_cpus((uint32_t *)(ptr + i));
59 i = i + sizeof(uint32_t);
60 }
61
62 #endif
63 }
64
65 static void
66 virtio_gpu_t2d_bswap(struct virtio_gpu_transfer_to_host_2d *t2d)
67 {
68 virtio_gpu_ctrl_hdr_bswap(&t2d->hdr);
69 le32_to_cpus(&t2d->r.x);
70 le32_to_cpus(&t2d->r.y);
71 le32_to_cpus(&t2d->r.width);
72 le32_to_cpus(&t2d->r.height);
73 le64_to_cpus(&t2d->offset);
74 le32_to_cpus(&t2d->resource_id);
75 le32_to_cpus(&t2d->padding);
76 }
77
78 #ifdef CONFIG_VIRGL
79 #include <virglrenderer.h>
80 #define VIRGL(_g, _virgl, _simple, ...) \
81 do { \
82 if (_g->use_virgl_renderer) { \
83 _virgl(__VA_ARGS__); \
84 } else { \
85 _simple(__VA_ARGS__); \
86 } \
87 } while (0)
88 #else
89 #define VIRGL(_g, _virgl, _simple, ...) \
90 do { \
91 _simple(__VA_ARGS__); \
92 } while (0)
93 #endif
94
95 static void update_cursor_data_simple(VirtIOGPU *g,
96 struct virtio_gpu_scanout *s,
97 uint32_t resource_id)
98 {
99 struct virtio_gpu_simple_resource *res;
100 uint32_t pixels;
101
102 res = virtio_gpu_find_resource(g, resource_id);
103 if (!res) {
104 return;
105 }
106
107 if (pixman_image_get_width(res->image) != s->current_cursor->width ||
108 pixman_image_get_height(res->image) != s->current_cursor->height) {
109 return;
110 }
111
112 pixels = s->current_cursor->width * s->current_cursor->height;
113 memcpy(s->current_cursor->data,
114 pixman_image_get_data(res->image),
115 pixels * sizeof(uint32_t));
116 }
117
118 #ifdef CONFIG_VIRGL
119
120 static void update_cursor_data_virgl(VirtIOGPU *g,
121 struct virtio_gpu_scanout *s,
122 uint32_t resource_id)
123 {
124 uint32_t width, height;
125 uint32_t pixels, *data;
126
127 data = virgl_renderer_get_cursor_data(resource_id, &width, &height);
128 if (!data) {
129 return;
130 }
131
132 if (width != s->current_cursor->width ||
133 height != s->current_cursor->height) {
134 free(data);
135 return;
136 }
137
138 pixels = s->current_cursor->width * s->current_cursor->height;
139 memcpy(s->current_cursor->data, data, pixels * sizeof(uint32_t));
140 free(data);
141 }
142
143 #endif
144
145 static void update_cursor(VirtIOGPU *g, struct virtio_gpu_update_cursor *cursor)
146 {
147 struct virtio_gpu_scanout *s;
148 bool move = cursor->hdr.type == VIRTIO_GPU_CMD_MOVE_CURSOR;
149
150 if (cursor->pos.scanout_id >= g->conf.max_outputs) {
151 return;
152 }
153 s = &g->scanout[cursor->pos.scanout_id];
154
155 trace_virtio_gpu_update_cursor(cursor->pos.scanout_id,
156 cursor->pos.x,
157 cursor->pos.y,
158 move ? "move" : "update",
159 cursor->resource_id);
160
161 if (!move) {
162 if (!s->current_cursor) {
163 s->current_cursor = cursor_alloc(64, 64);
164 }
165
166 s->current_cursor->hot_x = cursor->hot_x;
167 s->current_cursor->hot_y = cursor->hot_y;
168
169 if (cursor->resource_id > 0) {
170 VIRGL(g, update_cursor_data_virgl, update_cursor_data_simple,
171 g, s, cursor->resource_id);
172 }
173 dpy_cursor_define(s->con, s->current_cursor);
174
175 s->cursor = *cursor;
176 } else {
177 s->cursor.pos.x = cursor->pos.x;
178 s->cursor.pos.y = cursor->pos.y;
179 }
180 dpy_mouse_set(s->con, cursor->pos.x, cursor->pos.y,
181 cursor->resource_id ? 1 : 0);
182 }
183
184 static void virtio_gpu_get_config(VirtIODevice *vdev, uint8_t *config)
185 {
186 VirtIOGPU *g = VIRTIO_GPU(vdev);
187 memcpy(config, &g->virtio_config, sizeof(g->virtio_config));
188 }
189
190 static void virtio_gpu_set_config(VirtIODevice *vdev, const uint8_t *config)
191 {
192 VirtIOGPU *g = VIRTIO_GPU(vdev);
193 struct virtio_gpu_config vgconfig;
194
195 memcpy(&vgconfig, config, sizeof(g->virtio_config));
196
197 if (vgconfig.events_clear) {
198 g->virtio_config.events_read &= ~vgconfig.events_clear;
199 }
200 }
201
202 static uint64_t virtio_gpu_get_features(VirtIODevice *vdev, uint64_t features,
203 Error **errp)
204 {
205 VirtIOGPU *g = VIRTIO_GPU(vdev);
206
207 if (virtio_gpu_virgl_enabled(g->conf)) {
208 features |= (1 << VIRTIO_GPU_F_VIRGL);
209 }
210 return features;
211 }
212
213 static void virtio_gpu_set_features(VirtIODevice *vdev, uint64_t features)
214 {
215 static const uint32_t virgl = (1 << VIRTIO_GPU_F_VIRGL);
216 VirtIOGPU *g = VIRTIO_GPU(vdev);
217
218 g->use_virgl_renderer = ((features & virgl) == virgl);
219 trace_virtio_gpu_features(g->use_virgl_renderer);
220 }
221
222 static void virtio_gpu_notify_event(VirtIOGPU *g, uint32_t event_type)
223 {
224 g->virtio_config.events_read |= event_type;
225 virtio_notify_config(&g->parent_obj);
226 }
227
228 static struct virtio_gpu_simple_resource *
229 virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resource_id)
230 {
231 struct virtio_gpu_simple_resource *res;
232
233 QTAILQ_FOREACH(res, &g->reslist, next) {
234 if (res->resource_id == resource_id) {
235 return res;
236 }
237 }
238 return NULL;
239 }
240
241 void virtio_gpu_ctrl_response(VirtIOGPU *g,
242 struct virtio_gpu_ctrl_command *cmd,
243 struct virtio_gpu_ctrl_hdr *resp,
244 size_t resp_len)
245 {
246 size_t s;
247
248 if (cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_FENCE) {
249 resp->flags |= VIRTIO_GPU_FLAG_FENCE;
250 resp->fence_id = cmd->cmd_hdr.fence_id;
251 resp->ctx_id = cmd->cmd_hdr.ctx_id;
252 }
253 virtio_gpu_ctrl_hdr_bswap(resp);
254 s = iov_from_buf(cmd->elem.in_sg, cmd->elem.in_num, 0, resp, resp_len);
255 if (s != resp_len) {
256 qemu_log_mask(LOG_GUEST_ERROR,
257 "%s: response size incorrect %zu vs %zu\n",
258 __func__, s, resp_len);
259 }
260 virtqueue_push(cmd->vq, &cmd->elem, s);
261 virtio_notify(VIRTIO_DEVICE(g), cmd->vq);
262 cmd->finished = true;
263 }
264
265 void virtio_gpu_ctrl_response_nodata(VirtIOGPU *g,
266 struct virtio_gpu_ctrl_command *cmd,
267 enum virtio_gpu_ctrl_type type)
268 {
269 struct virtio_gpu_ctrl_hdr resp;
270
271 memset(&resp, 0, sizeof(resp));
272 resp.type = type;
273 virtio_gpu_ctrl_response(g, cmd, &resp, sizeof(resp));
274 }
275
276 static void
277 virtio_gpu_fill_display_info(VirtIOGPU *g,
278 struct virtio_gpu_resp_display_info *dpy_info)
279 {
280 int i;
281
282 for (i = 0; i < g->conf.max_outputs; i++) {
283 if (g->enabled_output_bitmask & (1 << i)) {
284 dpy_info->pmodes[i].enabled = 1;
285 dpy_info->pmodes[i].r.width = cpu_to_le32(g->req_state[i].width);
286 dpy_info->pmodes[i].r.height = cpu_to_le32(g->req_state[i].height);
287 }
288 }
289 }
290
291 void virtio_gpu_get_display_info(VirtIOGPU *g,
292 struct virtio_gpu_ctrl_command *cmd)
293 {
294 struct virtio_gpu_resp_display_info display_info;
295
296 trace_virtio_gpu_cmd_get_display_info();
297 memset(&display_info, 0, sizeof(display_info));
298 display_info.hdr.type = VIRTIO_GPU_RESP_OK_DISPLAY_INFO;
299 virtio_gpu_fill_display_info(g, &display_info);
300 virtio_gpu_ctrl_response(g, cmd, &display_info.hdr,
301 sizeof(display_info));
302 }
303
304 static pixman_format_code_t get_pixman_format(uint32_t virtio_gpu_format)
305 {
306 switch (virtio_gpu_format) {
307 case VIRTIO_GPU_FORMAT_B8G8R8X8_UNORM:
308 return PIXMAN_BE_b8g8r8x8;
309 case VIRTIO_GPU_FORMAT_B8G8R8A8_UNORM:
310 return PIXMAN_BE_b8g8r8a8;
311 case VIRTIO_GPU_FORMAT_X8R8G8B8_UNORM:
312 return PIXMAN_BE_x8r8g8b8;
313 case VIRTIO_GPU_FORMAT_A8R8G8B8_UNORM:
314 return PIXMAN_BE_a8r8g8b8;
315 case VIRTIO_GPU_FORMAT_R8G8B8X8_UNORM:
316 return PIXMAN_BE_r8g8b8x8;
317 case VIRTIO_GPU_FORMAT_R8G8B8A8_UNORM:
318 return PIXMAN_BE_r8g8b8a8;
319 case VIRTIO_GPU_FORMAT_X8B8G8R8_UNORM:
320 return PIXMAN_BE_x8b8g8r8;
321 case VIRTIO_GPU_FORMAT_A8B8G8R8_UNORM:
322 return PIXMAN_BE_a8b8g8r8;
323 default:
324 return 0;
325 }
326 }
327
328 static uint32_t calc_image_hostmem(pixman_format_code_t pformat,
329 uint32_t width, uint32_t height)
330 {
331 /* Copied from pixman/pixman-bits-image.c, skip integer overflow check.
332 * pixman_image_create_bits will fail in case it overflow.
333 */
334
335 int bpp = PIXMAN_FORMAT_BPP(pformat);
336 int stride = ((width * bpp + 0x1f) >> 5) * sizeof(uint32_t);
337 return height * stride;
338 }
339
340 static void virtio_gpu_resource_create_2d(VirtIOGPU *g,
341 struct virtio_gpu_ctrl_command *cmd)
342 {
343 pixman_format_code_t pformat;
344 struct virtio_gpu_simple_resource *res;
345 struct virtio_gpu_resource_create_2d c2d;
346
347 VIRTIO_GPU_FILL_CMD(c2d);
348 virtio_gpu_bswap_32(&c2d, sizeof(c2d));
349 trace_virtio_gpu_cmd_res_create_2d(c2d.resource_id, c2d.format,
350 c2d.width, c2d.height);
351
352 if (c2d.resource_id == 0) {
353 qemu_log_mask(LOG_GUEST_ERROR, "%s: resource id 0 is not allowed\n",
354 __func__);
355 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
356 return;
357 }
358
359 res = virtio_gpu_find_resource(g, c2d.resource_id);
360 if (res) {
361 qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already exists %d\n",
362 __func__, c2d.resource_id);
363 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
364 return;
365 }
366
367 res = g_new0(struct virtio_gpu_simple_resource, 1);
368
369 res->width = c2d.width;
370 res->height = c2d.height;
371 res->format = c2d.format;
372 res->resource_id = c2d.resource_id;
373
374 pformat = get_pixman_format(c2d.format);
375 if (!pformat) {
376 qemu_log_mask(LOG_GUEST_ERROR,
377 "%s: host couldn't handle guest format %d\n",
378 __func__, c2d.format);
379 g_free(res);
380 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
381 return;
382 }
383
384 res->hostmem = calc_image_hostmem(pformat, c2d.width, c2d.height);
385 if (res->hostmem + g->hostmem < g->conf.max_hostmem) {
386 res->image = pixman_image_create_bits(pformat,
387 c2d.width,
388 c2d.height,
389 NULL, 0);
390 }
391
392 if (!res->image) {
393 qemu_log_mask(LOG_GUEST_ERROR,
394 "%s: resource creation failed %d %d %d\n",
395 __func__, c2d.resource_id, c2d.width, c2d.height);
396 g_free(res);
397 cmd->error = VIRTIO_GPU_RESP_ERR_OUT_OF_MEMORY;
398 return;
399 }
400
401 QTAILQ_INSERT_HEAD(&g->reslist, res, next);
402 g->hostmem += res->hostmem;
403 }
404
405 static void virtio_gpu_disable_scanout(VirtIOGPU *g, int scanout_id)
406 {
407 struct virtio_gpu_scanout *scanout = &g->scanout[scanout_id];
408 struct virtio_gpu_simple_resource *res;
409 DisplaySurface *ds = NULL;
410
411 if (scanout->resource_id == 0) {
412 return;
413 }
414
415 res = virtio_gpu_find_resource(g, scanout->resource_id);
416 if (res) {
417 res->scanout_bitmask &= ~(1 << scanout_id);
418 }
419
420 if (scanout_id == 0) {
421 /* primary head */
422 ds = qemu_create_message_surface(scanout->width ?: 640,
423 scanout->height ?: 480,
424 "Guest disabled display.");
425 }
426 dpy_gfx_replace_surface(scanout->con, ds);
427 scanout->resource_id = 0;
428 scanout->ds = NULL;
429 scanout->width = 0;
430 scanout->height = 0;
431 }
432
433 static void virtio_gpu_resource_destroy(VirtIOGPU *g,
434 struct virtio_gpu_simple_resource *res)
435 {
436 int i;
437
438 if (res->scanout_bitmask) {
439 for (i = 0; i < g->conf.max_outputs; i++) {
440 if (res->scanout_bitmask & (1 << i)) {
441 virtio_gpu_disable_scanout(g, i);
442 }
443 }
444 }
445
446 pixman_image_unref(res->image);
447 virtio_gpu_cleanup_mapping(g, res);
448 QTAILQ_REMOVE(&g->reslist, res, next);
449 g->hostmem -= res->hostmem;
450 g_free(res);
451 }
452
453 static void virtio_gpu_resource_unref(VirtIOGPU *g,
454 struct virtio_gpu_ctrl_command *cmd)
455 {
456 struct virtio_gpu_simple_resource *res;
457 struct virtio_gpu_resource_unref unref;
458
459 VIRTIO_GPU_FILL_CMD(unref);
460 virtio_gpu_bswap_32(&unref, sizeof(unref));
461 trace_virtio_gpu_cmd_res_unref(unref.resource_id);
462
463 res = virtio_gpu_find_resource(g, unref.resource_id);
464 if (!res) {
465 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
466 __func__, unref.resource_id);
467 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
468 return;
469 }
470 virtio_gpu_resource_destroy(g, res);
471 }
472
473 static void virtio_gpu_transfer_to_host_2d(VirtIOGPU *g,
474 struct virtio_gpu_ctrl_command *cmd)
475 {
476 struct virtio_gpu_simple_resource *res;
477 int h;
478 uint32_t src_offset, dst_offset, stride;
479 int bpp;
480 pixman_format_code_t format;
481 struct virtio_gpu_transfer_to_host_2d t2d;
482
483 VIRTIO_GPU_FILL_CMD(t2d);
484 virtio_gpu_t2d_bswap(&t2d);
485 trace_virtio_gpu_cmd_res_xfer_toh_2d(t2d.resource_id);
486
487 res = virtio_gpu_find_resource(g, t2d.resource_id);
488 if (!res || !res->iov) {
489 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
490 __func__, t2d.resource_id);
491 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
492 return;
493 }
494
495 if (t2d.r.x > res->width ||
496 t2d.r.y > res->height ||
497 t2d.r.width > res->width ||
498 t2d.r.height > res->height ||
499 t2d.r.x + t2d.r.width > res->width ||
500 t2d.r.y + t2d.r.height > res->height) {
501 qemu_log_mask(LOG_GUEST_ERROR, "%s: transfer bounds outside resource"
502 " bounds for resource %d: %d %d %d %d vs %d %d\n",
503 __func__, t2d.resource_id, t2d.r.x, t2d.r.y,
504 t2d.r.width, t2d.r.height, res->width, res->height);
505 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
506 return;
507 }
508
509 format = pixman_image_get_format(res->image);
510 bpp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(format), 8);
511 stride = pixman_image_get_stride(res->image);
512
513 if (t2d.offset || t2d.r.x || t2d.r.y ||
514 t2d.r.width != pixman_image_get_width(res->image)) {
515 void *img_data = pixman_image_get_data(res->image);
516 for (h = 0; h < t2d.r.height; h++) {
517 src_offset = t2d.offset + stride * h;
518 dst_offset = (t2d.r.y + h) * stride + (t2d.r.x * bpp);
519
520 iov_to_buf(res->iov, res->iov_cnt, src_offset,
521 (uint8_t *)img_data
522 + dst_offset, t2d.r.width * bpp);
523 }
524 } else {
525 iov_to_buf(res->iov, res->iov_cnt, 0,
526 pixman_image_get_data(res->image),
527 pixman_image_get_stride(res->image)
528 * pixman_image_get_height(res->image));
529 }
530 }
531
532 static void virtio_gpu_resource_flush(VirtIOGPU *g,
533 struct virtio_gpu_ctrl_command *cmd)
534 {
535 struct virtio_gpu_simple_resource *res;
536 struct virtio_gpu_resource_flush rf;
537 pixman_region16_t flush_region;
538 int i;
539
540 VIRTIO_GPU_FILL_CMD(rf);
541 virtio_gpu_bswap_32(&rf, sizeof(rf));
542 trace_virtio_gpu_cmd_res_flush(rf.resource_id,
543 rf.r.width, rf.r.height, rf.r.x, rf.r.y);
544
545 res = virtio_gpu_find_resource(g, rf.resource_id);
546 if (!res) {
547 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
548 __func__, rf.resource_id);
549 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
550 return;
551 }
552
553 if (rf.r.x > res->width ||
554 rf.r.y > res->height ||
555 rf.r.width > res->width ||
556 rf.r.height > res->height ||
557 rf.r.x + rf.r.width > res->width ||
558 rf.r.y + rf.r.height > res->height) {
559 qemu_log_mask(LOG_GUEST_ERROR, "%s: flush bounds outside resource"
560 " bounds for resource %d: %d %d %d %d vs %d %d\n",
561 __func__, rf.resource_id, rf.r.x, rf.r.y,
562 rf.r.width, rf.r.height, res->width, res->height);
563 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
564 return;
565 }
566
567 pixman_region_init_rect(&flush_region,
568 rf.r.x, rf.r.y, rf.r.width, rf.r.height);
569 for (i = 0; i < g->conf.max_outputs; i++) {
570 struct virtio_gpu_scanout *scanout;
571 pixman_region16_t region, finalregion;
572 pixman_box16_t *extents;
573
574 if (!(res->scanout_bitmask & (1 << i))) {
575 continue;
576 }
577 scanout = &g->scanout[i];
578
579 pixman_region_init(&finalregion);
580 pixman_region_init_rect(&region, scanout->x, scanout->y,
581 scanout->width, scanout->height);
582
583 pixman_region_intersect(&finalregion, &flush_region, &region);
584 pixman_region_translate(&finalregion, -scanout->x, -scanout->y);
585 extents = pixman_region_extents(&finalregion);
586 /* work out the area we need to update for each console */
587 dpy_gfx_update(g->scanout[i].con,
588 extents->x1, extents->y1,
589 extents->x2 - extents->x1,
590 extents->y2 - extents->y1);
591
592 pixman_region_fini(&region);
593 pixman_region_fini(&finalregion);
594 }
595 pixman_region_fini(&flush_region);
596 }
597
598 static void virtio_unref_resource(pixman_image_t *image, void *data)
599 {
600 pixman_image_unref(data);
601 }
602
603 static void virtio_gpu_set_scanout(VirtIOGPU *g,
604 struct virtio_gpu_ctrl_command *cmd)
605 {
606 struct virtio_gpu_simple_resource *res, *ores;
607 struct virtio_gpu_scanout *scanout;
608 pixman_format_code_t format;
609 uint32_t offset;
610 int bpp;
611 struct virtio_gpu_set_scanout ss;
612
613 VIRTIO_GPU_FILL_CMD(ss);
614 virtio_gpu_bswap_32(&ss, sizeof(ss));
615 trace_virtio_gpu_cmd_set_scanout(ss.scanout_id, ss.resource_id,
616 ss.r.width, ss.r.height, ss.r.x, ss.r.y);
617
618 if (ss.scanout_id >= g->conf.max_outputs) {
619 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d",
620 __func__, ss.scanout_id);
621 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID;
622 return;
623 }
624
625 g->enable = 1;
626 if (ss.resource_id == 0) {
627 virtio_gpu_disable_scanout(g, ss.scanout_id);
628 return;
629 }
630
631 /* create a surface for this scanout */
632 res = virtio_gpu_find_resource(g, ss.resource_id);
633 if (!res) {
634 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
635 __func__, ss.resource_id);
636 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
637 return;
638 }
639
640 if (ss.r.x > res->width ||
641 ss.r.y > res->height ||
642 ss.r.width > res->width ||
643 ss.r.height > res->height ||
644 ss.r.x + ss.r.width > res->width ||
645 ss.r.y + ss.r.height > res->height) {
646 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout %d bounds for"
647 " resource %d, (%d,%d)+%d,%d vs %d %d\n",
648 __func__, ss.scanout_id, ss.resource_id, ss.r.x, ss.r.y,
649 ss.r.width, ss.r.height, res->width, res->height);
650 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER;
651 return;
652 }
653
654 scanout = &g->scanout[ss.scanout_id];
655
656 format = pixman_image_get_format(res->image);
657 bpp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(format), 8);
658 offset = (ss.r.x * bpp) + ss.r.y * pixman_image_get_stride(res->image);
659 if (!scanout->ds || surface_data(scanout->ds)
660 != ((uint8_t *)pixman_image_get_data(res->image) + offset) ||
661 scanout->width != ss.r.width ||
662 scanout->height != ss.r.height) {
663 pixman_image_t *rect;
664 void *ptr = (uint8_t *)pixman_image_get_data(res->image) + offset;
665 rect = pixman_image_create_bits(format, ss.r.width, ss.r.height, ptr,
666 pixman_image_get_stride(res->image));
667 pixman_image_ref(res->image);
668 pixman_image_set_destroy_function(rect, virtio_unref_resource,
669 res->image);
670 /* realloc the surface ptr */
671 scanout->ds = qemu_create_displaysurface_pixman(rect);
672 if (!scanout->ds) {
673 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
674 return;
675 }
676 pixman_image_unref(rect);
677 dpy_gfx_replace_surface(g->scanout[ss.scanout_id].con, scanout->ds);
678 }
679
680 ores = virtio_gpu_find_resource(g, scanout->resource_id);
681 if (ores) {
682 ores->scanout_bitmask &= ~(1 << ss.scanout_id);
683 }
684
685 res->scanout_bitmask |= (1 << ss.scanout_id);
686 scanout->resource_id = ss.resource_id;
687 scanout->x = ss.r.x;
688 scanout->y = ss.r.y;
689 scanout->width = ss.r.width;
690 scanout->height = ss.r.height;
691 }
692
693 int virtio_gpu_create_mapping_iov(VirtIOGPU *g,
694 struct virtio_gpu_resource_attach_backing *ab,
695 struct virtio_gpu_ctrl_command *cmd,
696 uint64_t **addr, struct iovec **iov)
697 {
698 struct virtio_gpu_mem_entry *ents;
699 size_t esize, s;
700 int i;
701
702 if (ab->nr_entries > 16384) {
703 qemu_log_mask(LOG_GUEST_ERROR,
704 "%s: nr_entries is too big (%d > 16384)\n",
705 __func__, ab->nr_entries);
706 return -1;
707 }
708
709 esize = sizeof(*ents) * ab->nr_entries;
710 ents = g_malloc(esize);
711 s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num,
712 sizeof(*ab), ents, esize);
713 if (s != esize) {
714 qemu_log_mask(LOG_GUEST_ERROR,
715 "%s: command data size incorrect %zu vs %zu\n",
716 __func__, s, esize);
717 g_free(ents);
718 return -1;
719 }
720
721 *iov = g_malloc0(sizeof(struct iovec) * ab->nr_entries);
722 if (addr) {
723 *addr = g_malloc0(sizeof(uint64_t) * ab->nr_entries);
724 }
725 for (i = 0; i < ab->nr_entries; i++) {
726 uint64_t a = le64_to_cpu(ents[i].addr);
727 uint32_t l = le32_to_cpu(ents[i].length);
728 hwaddr len = l;
729 (*iov)[i].iov_len = l;
730 (*iov)[i].iov_base = dma_memory_map(VIRTIO_DEVICE(g)->dma_as,
731 a, &len, DMA_DIRECTION_TO_DEVICE);
732 if (addr) {
733 (*addr)[i] = a;
734 }
735 if (!(*iov)[i].iov_base || len != l) {
736 qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to map MMIO memory for"
737 " resource %d element %d\n",
738 __func__, ab->resource_id, i);
739 virtio_gpu_cleanup_mapping_iov(g, *iov, i);
740 g_free(ents);
741 *iov = NULL;
742 if (addr) {
743 g_free(*addr);
744 *addr = NULL;
745 }
746 return -1;
747 }
748 }
749 g_free(ents);
750 return 0;
751 }
752
753 void virtio_gpu_cleanup_mapping_iov(VirtIOGPU *g,
754 struct iovec *iov, uint32_t count)
755 {
756 int i;
757
758 for (i = 0; i < count; i++) {
759 dma_memory_unmap(VIRTIO_DEVICE(g)->dma_as,
760 iov[i].iov_base, iov[i].iov_len,
761 DMA_DIRECTION_TO_DEVICE,
762 iov[i].iov_len);
763 }
764 g_free(iov);
765 }
766
767 static void virtio_gpu_cleanup_mapping(VirtIOGPU *g,
768 struct virtio_gpu_simple_resource *res)
769 {
770 virtio_gpu_cleanup_mapping_iov(g, res->iov, res->iov_cnt);
771 res->iov = NULL;
772 res->iov_cnt = 0;
773 g_free(res->addrs);
774 res->addrs = NULL;
775 }
776
777 static void
778 virtio_gpu_resource_attach_backing(VirtIOGPU *g,
779 struct virtio_gpu_ctrl_command *cmd)
780 {
781 struct virtio_gpu_simple_resource *res;
782 struct virtio_gpu_resource_attach_backing ab;
783 int ret;
784
785 VIRTIO_GPU_FILL_CMD(ab);
786 virtio_gpu_bswap_32(&ab, sizeof(ab));
787 trace_virtio_gpu_cmd_res_back_attach(ab.resource_id);
788
789 res = virtio_gpu_find_resource(g, ab.resource_id);
790 if (!res) {
791 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
792 __func__, ab.resource_id);
793 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
794 return;
795 }
796
797 if (res->iov) {
798 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
799 return;
800 }
801
802 ret = virtio_gpu_create_mapping_iov(g, &ab, cmd, &res->addrs, &res->iov);
803 if (ret != 0) {
804 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
805 return;
806 }
807
808 res->iov_cnt = ab.nr_entries;
809 }
810
811 static void
812 virtio_gpu_resource_detach_backing(VirtIOGPU *g,
813 struct virtio_gpu_ctrl_command *cmd)
814 {
815 struct virtio_gpu_simple_resource *res;
816 struct virtio_gpu_resource_detach_backing detach;
817
818 VIRTIO_GPU_FILL_CMD(detach);
819 virtio_gpu_bswap_32(&detach, sizeof(detach));
820 trace_virtio_gpu_cmd_res_back_detach(detach.resource_id);
821
822 res = virtio_gpu_find_resource(g, detach.resource_id);
823 if (!res || !res->iov) {
824 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n",
825 __func__, detach.resource_id);
826 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID;
827 return;
828 }
829 virtio_gpu_cleanup_mapping(g, res);
830 }
831
832 static void virtio_gpu_simple_process_cmd(VirtIOGPU *g,
833 struct virtio_gpu_ctrl_command *cmd)
834 {
835 VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr);
836 virtio_gpu_ctrl_hdr_bswap(&cmd->cmd_hdr);
837
838 switch (cmd->cmd_hdr.type) {
839 case VIRTIO_GPU_CMD_GET_DISPLAY_INFO:
840 virtio_gpu_get_display_info(g, cmd);
841 break;
842 case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D:
843 virtio_gpu_resource_create_2d(g, cmd);
844 break;
845 case VIRTIO_GPU_CMD_RESOURCE_UNREF:
846 virtio_gpu_resource_unref(g, cmd);
847 break;
848 case VIRTIO_GPU_CMD_RESOURCE_FLUSH:
849 virtio_gpu_resource_flush(g, cmd);
850 break;
851 case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D:
852 virtio_gpu_transfer_to_host_2d(g, cmd);
853 break;
854 case VIRTIO_GPU_CMD_SET_SCANOUT:
855 virtio_gpu_set_scanout(g, cmd);
856 break;
857 case VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING:
858 virtio_gpu_resource_attach_backing(g, cmd);
859 break;
860 case VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING:
861 virtio_gpu_resource_detach_backing(g, cmd);
862 break;
863 default:
864 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC;
865 break;
866 }
867 if (!cmd->finished) {
868 virtio_gpu_ctrl_response_nodata(g, cmd, cmd->error ? cmd->error :
869 VIRTIO_GPU_RESP_OK_NODATA);
870 }
871 }
872
873 static void virtio_gpu_handle_ctrl_cb(VirtIODevice *vdev, VirtQueue *vq)
874 {
875 VirtIOGPU *g = VIRTIO_GPU(vdev);
876 qemu_bh_schedule(g->ctrl_bh);
877 }
878
879 static void virtio_gpu_handle_cursor_cb(VirtIODevice *vdev, VirtQueue *vq)
880 {
881 VirtIOGPU *g = VIRTIO_GPU(vdev);
882 qemu_bh_schedule(g->cursor_bh);
883 }
884
885 void virtio_gpu_process_cmdq(VirtIOGPU *g)
886 {
887 struct virtio_gpu_ctrl_command *cmd;
888
889 while (!QTAILQ_EMPTY(&g->cmdq)) {
890 cmd = QTAILQ_FIRST(&g->cmdq);
891
892 /* process command */
893 VIRGL(g, virtio_gpu_virgl_process_cmd, virtio_gpu_simple_process_cmd,
894 g, cmd);
895 if (cmd->waiting) {
896 break;
897 }
898 QTAILQ_REMOVE(&g->cmdq, cmd, next);
899 if (virtio_gpu_stats_enabled(g->conf)) {
900 g->stats.requests++;
901 }
902
903 if (!cmd->finished) {
904 QTAILQ_INSERT_TAIL(&g->fenceq, cmd, next);
905 g->inflight++;
906 if (virtio_gpu_stats_enabled(g->conf)) {
907 if (g->stats.max_inflight < g->inflight) {
908 g->stats.max_inflight = g->inflight;
909 }
910 fprintf(stderr, "inflight: %3d (+)\r", g->inflight);
911 }
912 } else {
913 g_free(cmd);
914 }
915 }
916 }
917
918 static void virtio_gpu_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
919 {
920 VirtIOGPU *g = VIRTIO_GPU(vdev);
921 struct virtio_gpu_ctrl_command *cmd;
922
923 if (!virtio_queue_ready(vq)) {
924 return;
925 }
926
927 #ifdef CONFIG_VIRGL
928 if (!g->renderer_inited && g->use_virgl_renderer) {
929 virtio_gpu_virgl_init(g);
930 g->renderer_inited = true;
931 }
932 #endif
933
934 cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command));
935 while (cmd) {
936 cmd->vq = vq;
937 cmd->error = 0;
938 cmd->finished = false;
939 cmd->waiting = false;
940 QTAILQ_INSERT_TAIL(&g->cmdq, cmd, next);
941 cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command));
942 }
943
944 virtio_gpu_process_cmdq(g);
945
946 #ifdef CONFIG_VIRGL
947 if (g->use_virgl_renderer) {
948 virtio_gpu_virgl_fence_poll(g);
949 }
950 #endif
951 }
952
953 static void virtio_gpu_ctrl_bh(void *opaque)
954 {
955 VirtIOGPU *g = opaque;
956 virtio_gpu_handle_ctrl(&g->parent_obj, g->ctrl_vq);
957 }
958
959 static void virtio_gpu_handle_cursor(VirtIODevice *vdev, VirtQueue *vq)
960 {
961 VirtIOGPU *g = VIRTIO_GPU(vdev);
962 VirtQueueElement *elem;
963 size_t s;
964 struct virtio_gpu_update_cursor cursor_info;
965
966 if (!virtio_queue_ready(vq)) {
967 return;
968 }
969 for (;;) {
970 elem = virtqueue_pop(vq, sizeof(VirtQueueElement));
971 if (!elem) {
972 break;
973 }
974
975 s = iov_to_buf(elem->out_sg, elem->out_num, 0,
976 &cursor_info, sizeof(cursor_info));
977 if (s != sizeof(cursor_info)) {
978 qemu_log_mask(LOG_GUEST_ERROR,
979 "%s: cursor size incorrect %zu vs %zu\n",
980 __func__, s, sizeof(cursor_info));
981 } else {
982 virtio_gpu_bswap_32(&cursor_info, sizeof(cursor_info));
983 update_cursor(g, &cursor_info);
984 }
985 virtqueue_push(vq, elem, 0);
986 virtio_notify(vdev, vq);
987 g_free(elem);
988 }
989 }
990
991 static void virtio_gpu_cursor_bh(void *opaque)
992 {
993 VirtIOGPU *g = opaque;
994 virtio_gpu_handle_cursor(&g->parent_obj, g->cursor_vq);
995 }
996
997 static void virtio_gpu_invalidate_display(void *opaque)
998 {
999 }
1000
1001 static void virtio_gpu_update_display(void *opaque)
1002 {
1003 }
1004
1005 static void virtio_gpu_text_update(void *opaque, console_ch_t *chardata)
1006 {
1007 }
1008
1009 static int virtio_gpu_ui_info(void *opaque, uint32_t idx, QemuUIInfo *info)
1010 {
1011 VirtIOGPU *g = opaque;
1012
1013 if (idx >= g->conf.max_outputs) {
1014 return -1;
1015 }
1016
1017 g->req_state[idx].x = info->xoff;
1018 g->req_state[idx].y = info->yoff;
1019 g->req_state[idx].width = info->width;
1020 g->req_state[idx].height = info->height;
1021
1022 if (info->width && info->height) {
1023 g->enabled_output_bitmask |= (1 << idx);
1024 } else {
1025 g->enabled_output_bitmask &= ~(1 << idx);
1026 }
1027
1028 /* send event to guest */
1029 virtio_gpu_notify_event(g, VIRTIO_GPU_EVENT_DISPLAY);
1030 return 0;
1031 }
1032
1033 const GraphicHwOps virtio_gpu_ops = {
1034 .invalidate = virtio_gpu_invalidate_display,
1035 .gfx_update = virtio_gpu_update_display,
1036 .text_update = virtio_gpu_text_update,
1037 .ui_info = virtio_gpu_ui_info,
1038 #ifdef CONFIG_VIRGL
1039 .gl_block = virtio_gpu_gl_block,
1040 #endif
1041 };
1042
1043 static const VMStateDescription vmstate_virtio_gpu_scanout = {
1044 .name = "virtio-gpu-one-scanout",
1045 .version_id = 1,
1046 .fields = (VMStateField[]) {
1047 VMSTATE_UINT32(resource_id, struct virtio_gpu_scanout),
1048 VMSTATE_UINT32(width, struct virtio_gpu_scanout),
1049 VMSTATE_UINT32(height, struct virtio_gpu_scanout),
1050 VMSTATE_INT32(x, struct virtio_gpu_scanout),
1051 VMSTATE_INT32(y, struct virtio_gpu_scanout),
1052 VMSTATE_UINT32(cursor.resource_id, struct virtio_gpu_scanout),
1053 VMSTATE_UINT32(cursor.hot_x, struct virtio_gpu_scanout),
1054 VMSTATE_UINT32(cursor.hot_y, struct virtio_gpu_scanout),
1055 VMSTATE_UINT32(cursor.pos.x, struct virtio_gpu_scanout),
1056 VMSTATE_UINT32(cursor.pos.y, struct virtio_gpu_scanout),
1057 VMSTATE_END_OF_LIST()
1058 },
1059 };
1060
1061 static const VMStateDescription vmstate_virtio_gpu_scanouts = {
1062 .name = "virtio-gpu-scanouts",
1063 .version_id = 1,
1064 .fields = (VMStateField[]) {
1065 VMSTATE_INT32(enable, struct VirtIOGPU),
1066 VMSTATE_UINT32_EQUAL(conf.max_outputs, struct VirtIOGPU, NULL),
1067 VMSTATE_STRUCT_VARRAY_UINT32(scanout, struct VirtIOGPU,
1068 conf.max_outputs, 1,
1069 vmstate_virtio_gpu_scanout,
1070 struct virtio_gpu_scanout),
1071 VMSTATE_END_OF_LIST()
1072 },
1073 };
1074
1075 static int virtio_gpu_save(QEMUFile *f, void *opaque, size_t size,
1076 const VMStateField *field, QJSON *vmdesc)
1077 {
1078 VirtIOGPU *g = opaque;
1079 struct virtio_gpu_simple_resource *res;
1080 int i;
1081
1082 /* in 2d mode we should never find unprocessed commands here */
1083 assert(QTAILQ_EMPTY(&g->cmdq));
1084
1085 QTAILQ_FOREACH(res, &g->reslist, next) {
1086 qemu_put_be32(f, res->resource_id);
1087 qemu_put_be32(f, res->width);
1088 qemu_put_be32(f, res->height);
1089 qemu_put_be32(f, res->format);
1090 qemu_put_be32(f, res->iov_cnt);
1091 for (i = 0; i < res->iov_cnt; i++) {
1092 qemu_put_be64(f, res->addrs[i]);
1093 qemu_put_be32(f, res->iov[i].iov_len);
1094 }
1095 qemu_put_buffer(f, (void *)pixman_image_get_data(res->image),
1096 pixman_image_get_stride(res->image) * res->height);
1097 }
1098 qemu_put_be32(f, 0); /* end of list */
1099
1100 return vmstate_save_state(f, &vmstate_virtio_gpu_scanouts, g, NULL);
1101 }
1102
1103 static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size,
1104 const VMStateField *field)
1105 {
1106 VirtIOGPU *g = opaque;
1107 struct virtio_gpu_simple_resource *res;
1108 struct virtio_gpu_scanout *scanout;
1109 uint32_t resource_id, pformat;
1110 int i;
1111
1112 g->hostmem = 0;
1113
1114 resource_id = qemu_get_be32(f);
1115 while (resource_id != 0) {
1116 res = g_new0(struct virtio_gpu_simple_resource, 1);
1117 res->resource_id = resource_id;
1118 res->width = qemu_get_be32(f);
1119 res->height = qemu_get_be32(f);
1120 res->format = qemu_get_be32(f);
1121 res->iov_cnt = qemu_get_be32(f);
1122
1123 /* allocate */
1124 pformat = get_pixman_format(res->format);
1125 if (!pformat) {
1126 g_free(res);
1127 return -EINVAL;
1128 }
1129 res->image = pixman_image_create_bits(pformat,
1130 res->width, res->height,
1131 NULL, 0);
1132 if (!res->image) {
1133 g_free(res);
1134 return -EINVAL;
1135 }
1136
1137 res->hostmem = calc_image_hostmem(pformat, res->width, res->height);
1138
1139 res->addrs = g_new(uint64_t, res->iov_cnt);
1140 res->iov = g_new(struct iovec, res->iov_cnt);
1141
1142 /* read data */
1143 for (i = 0; i < res->iov_cnt; i++) {
1144 res->addrs[i] = qemu_get_be64(f);
1145 res->iov[i].iov_len = qemu_get_be32(f);
1146 }
1147 qemu_get_buffer(f, (void *)pixman_image_get_data(res->image),
1148 pixman_image_get_stride(res->image) * res->height);
1149
1150 /* restore mapping */
1151 for (i = 0; i < res->iov_cnt; i++) {
1152 hwaddr len = res->iov[i].iov_len;
1153 res->iov[i].iov_base =
1154 dma_memory_map(VIRTIO_DEVICE(g)->dma_as,
1155 res->addrs[i], &len, DMA_DIRECTION_TO_DEVICE);
1156
1157 if (!res->iov[i].iov_base || len != res->iov[i].iov_len) {
1158 /* Clean up the half-a-mapping we just created... */
1159 if (res->iov[i].iov_base) {
1160 dma_memory_unmap(VIRTIO_DEVICE(g)->dma_as,
1161 res->iov[i].iov_base,
1162 res->iov[i].iov_len,
1163 DMA_DIRECTION_TO_DEVICE,
1164 res->iov[i].iov_len);
1165 }
1166 /* ...and the mappings for previous loop iterations */
1167 res->iov_cnt = i;
1168 virtio_gpu_cleanup_mapping(g, res);
1169 pixman_image_unref(res->image);
1170 g_free(res);
1171 return -EINVAL;
1172 }
1173 }
1174
1175 QTAILQ_INSERT_HEAD(&g->reslist, res, next);
1176 g->hostmem += res->hostmem;
1177
1178 resource_id = qemu_get_be32(f);
1179 }
1180
1181 /* load & apply scanout state */
1182 vmstate_load_state(f, &vmstate_virtio_gpu_scanouts, g, 1);
1183 for (i = 0; i < g->conf.max_outputs; i++) {
1184 scanout = &g->scanout[i];
1185 if (!scanout->resource_id) {
1186 continue;
1187 }
1188 res = virtio_gpu_find_resource(g, scanout->resource_id);
1189 if (!res) {
1190 return -EINVAL;
1191 }
1192 scanout->ds = qemu_create_displaysurface_pixman(res->image);
1193 if (!scanout->ds) {
1194 return -EINVAL;
1195 }
1196
1197 dpy_gfx_replace_surface(scanout->con, scanout->ds);
1198 dpy_gfx_update_full(scanout->con);
1199 if (scanout->cursor.resource_id) {
1200 update_cursor(g, &scanout->cursor);
1201 }
1202 res->scanout_bitmask |= (1 << i);
1203 }
1204
1205 return 0;
1206 }
1207
1208 static void virtio_gpu_device_realize(DeviceState *qdev, Error **errp)
1209 {
1210 VirtIODevice *vdev = VIRTIO_DEVICE(qdev);
1211 VirtIOGPU *g = VIRTIO_GPU(qdev);
1212 bool have_virgl;
1213 Error *local_err = NULL;
1214 int i;
1215
1216 if (g->conf.max_outputs > VIRTIO_GPU_MAX_SCANOUTS) {
1217 error_setg(errp, "invalid max_outputs > %d", VIRTIO_GPU_MAX_SCANOUTS);
1218 return;
1219 }
1220
1221 g->use_virgl_renderer = false;
1222 #if !defined(CONFIG_VIRGL) || defined(HOST_WORDS_BIGENDIAN)
1223 have_virgl = false;
1224 #else
1225 have_virgl = display_opengl;
1226 #endif
1227 if (!have_virgl) {
1228 g->conf.flags &= ~(1 << VIRTIO_GPU_FLAG_VIRGL_ENABLED);
1229 }
1230
1231 if (virtio_gpu_virgl_enabled(g->conf)) {
1232 error_setg(&g->migration_blocker, "virgl is not yet migratable");
1233 migrate_add_blocker(g->migration_blocker, &local_err);
1234 if (local_err) {
1235 error_propagate(errp, local_err);
1236 error_free(g->migration_blocker);
1237 return;
1238 }
1239 }
1240
1241 g->config_size = sizeof(struct virtio_gpu_config);
1242 g->virtio_config.num_scanouts = cpu_to_le32(g->conf.max_outputs);
1243 virtio_init(VIRTIO_DEVICE(g), "virtio-gpu", VIRTIO_ID_GPU,
1244 g->config_size);
1245
1246 g->req_state[0].width = g->conf.xres;
1247 g->req_state[0].height = g->conf.yres;
1248
1249 if (virtio_gpu_virgl_enabled(g->conf)) {
1250 /* use larger control queue in 3d mode */
1251 g->ctrl_vq = virtio_add_queue(vdev, 256, virtio_gpu_handle_ctrl_cb);
1252 g->cursor_vq = virtio_add_queue(vdev, 16, virtio_gpu_handle_cursor_cb);
1253
1254 #if defined(CONFIG_VIRGL)
1255 g->virtio_config.num_capsets = virtio_gpu_virgl_get_num_capsets(g);
1256 #else
1257 g->virtio_config.num_capsets = 0;
1258 #endif
1259 } else {
1260 g->ctrl_vq = virtio_add_queue(vdev, 64, virtio_gpu_handle_ctrl_cb);
1261 g->cursor_vq = virtio_add_queue(vdev, 16, virtio_gpu_handle_cursor_cb);
1262 }
1263
1264 g->ctrl_bh = qemu_bh_new(virtio_gpu_ctrl_bh, g);
1265 g->cursor_bh = qemu_bh_new(virtio_gpu_cursor_bh, g);
1266 QTAILQ_INIT(&g->reslist);
1267 QTAILQ_INIT(&g->cmdq);
1268 QTAILQ_INIT(&g->fenceq);
1269
1270 g->enabled_output_bitmask = 1;
1271 g->qdev = qdev;
1272
1273 for (i = 0; i < g->conf.max_outputs; i++) {
1274 g->scanout[i].con =
1275 graphic_console_init(DEVICE(g), i, &virtio_gpu_ops, g);
1276 if (i > 0) {
1277 dpy_gfx_replace_surface(g->scanout[i].con, NULL);
1278 }
1279 }
1280 }
1281
1282 static void virtio_gpu_device_unrealize(DeviceState *qdev, Error **errp)
1283 {
1284 VirtIOGPU *g = VIRTIO_GPU(qdev);
1285 if (g->migration_blocker) {
1286 migrate_del_blocker(g->migration_blocker);
1287 error_free(g->migration_blocker);
1288 }
1289 }
1290
1291 static void virtio_gpu_instance_init(Object *obj)
1292 {
1293 }
1294
1295 void virtio_gpu_reset(VirtIODevice *vdev)
1296 {
1297 VirtIOGPU *g = VIRTIO_GPU(vdev);
1298 struct virtio_gpu_simple_resource *res, *tmp;
1299 int i;
1300
1301 g->enable = 0;
1302
1303 QTAILQ_FOREACH_SAFE(res, &g->reslist, next, tmp) {
1304 virtio_gpu_resource_destroy(g, res);
1305 }
1306 for (i = 0; i < g->conf.max_outputs; i++) {
1307 g->scanout[i].resource_id = 0;
1308 g->scanout[i].width = 0;
1309 g->scanout[i].height = 0;
1310 g->scanout[i].x = 0;
1311 g->scanout[i].y = 0;
1312 g->scanout[i].ds = NULL;
1313 }
1314
1315 #ifdef CONFIG_VIRGL
1316 if (g->use_virgl_renderer) {
1317 virtio_gpu_virgl_reset(g);
1318 g->use_virgl_renderer = 0;
1319 }
1320 #endif
1321 }
1322
1323 /*
1324 * For historical reasons virtio_gpu does not adhere to virtio migration
1325 * scheme as described in doc/virtio-migration.txt, in a sense that no
1326 * save/load callback are provided to the core. Instead the device data
1327 * is saved/loaded after the core data.
1328 *
1329 * Because of this we need a special vmsd.
1330 */
1331 static const VMStateDescription vmstate_virtio_gpu = {
1332 .name = "virtio-gpu",
1333 .minimum_version_id = VIRTIO_GPU_VM_VERSION,
1334 .version_id = VIRTIO_GPU_VM_VERSION,
1335 .fields = (VMStateField[]) {
1336 VMSTATE_VIRTIO_DEVICE /* core */,
1337 {
1338 .name = "virtio-gpu",
1339 .info = &(const VMStateInfo) {
1340 .name = "virtio-gpu",
1341 .get = virtio_gpu_load,
1342 .put = virtio_gpu_save,
1343 },
1344 .flags = VMS_SINGLE,
1345 } /* device */,
1346 VMSTATE_END_OF_LIST()
1347 },
1348 };
1349
1350 static Property virtio_gpu_properties[] = {
1351 DEFINE_PROP_UINT32("max_outputs", VirtIOGPU, conf.max_outputs, 1),
1352 DEFINE_PROP_SIZE("max_hostmem", VirtIOGPU, conf.max_hostmem, 256 * MiB),
1353 #ifdef CONFIG_VIRGL
1354 DEFINE_PROP_BIT("virgl", VirtIOGPU, conf.flags,
1355 VIRTIO_GPU_FLAG_VIRGL_ENABLED, true),
1356 DEFINE_PROP_BIT("stats", VirtIOGPU, conf.flags,
1357 VIRTIO_GPU_FLAG_STATS_ENABLED, false),
1358 #endif
1359 DEFINE_PROP_UINT32("xres", VirtIOGPU, conf.xres, 1024),
1360 DEFINE_PROP_UINT32("yres", VirtIOGPU, conf.yres, 768),
1361 DEFINE_PROP_END_OF_LIST(),
1362 };
1363
1364 static void virtio_gpu_class_init(ObjectClass *klass, void *data)
1365 {
1366 DeviceClass *dc = DEVICE_CLASS(klass);
1367 VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
1368
1369 vdc->realize = virtio_gpu_device_realize;
1370 vdc->unrealize = virtio_gpu_device_unrealize;
1371 vdc->get_config = virtio_gpu_get_config;
1372 vdc->set_config = virtio_gpu_set_config;
1373 vdc->get_features = virtio_gpu_get_features;
1374 vdc->set_features = virtio_gpu_set_features;
1375
1376 vdc->reset = virtio_gpu_reset;
1377
1378 set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories);
1379 dc->props = virtio_gpu_properties;
1380 dc->vmsd = &vmstate_virtio_gpu;
1381 dc->hotpluggable = false;
1382 }
1383
1384 static const TypeInfo virtio_gpu_info = {
1385 .name = TYPE_VIRTIO_GPU,
1386 .parent = TYPE_VIRTIO_DEVICE,
1387 .instance_size = sizeof(VirtIOGPU),
1388 .instance_init = virtio_gpu_instance_init,
1389 .class_init = virtio_gpu_class_init,
1390 };
1391
1392 static void virtio_register_types(void)
1393 {
1394 type_register_static(&virtio_gpu_info);
1395 }
1396
1397 type_init(virtio_register_types)
1398
1399 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctrl_hdr) != 24);
1400 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_update_cursor) != 56);
1401 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_unref) != 32);
1402 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_create_2d) != 40);
1403 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_set_scanout) != 48);
1404 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_flush) != 48);
1405 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_transfer_to_host_2d) != 56);
1406 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_mem_entry) != 16);
1407 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_attach_backing) != 32);
1408 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_detach_backing) != 32);
1409 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resp_display_info) != 408);
1410
1411 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_transfer_host_3d) != 72);
1412 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_create_3d) != 72);
1413 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctx_create) != 96);
1414 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctx_destroy) != 24);
1415 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctx_resource) != 32);
1416 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_cmd_submit) != 32);
1417 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_get_capset_info) != 32);
1418 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resp_capset_info) != 40);
1419 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_get_capset) != 32);
1420 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resp_capset) != 24);
QEmu