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 "hw/display/edid.h" 25 #include "migration/blocker.h" 26 #include "qemu/log.h" 27 #include "qapi/error.h" 28 29 #define VIRTIO_GPU_VM_VERSION 1 30 31 static struct virtio_gpu_simple_resource* 32 virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resource_id); 33 34 static void virtio_gpu_cleanup_mapping(VirtIOGPU *g, 35 struct virtio_gpu_simple_resource *res); 36 37 static void 38 virtio_gpu_ctrl_hdr_bswap(struct virtio_gpu_ctrl_hdr *hdr) 39 { 40 le32_to_cpus(&hdr->type); 41 le32_to_cpus(&hdr->flags); 42 le64_to_cpus(&hdr->fence_id); 43 le32_to_cpus(&hdr->ctx_id); 44 le32_to_cpus(&hdr->padding); 45 } 46 47 static void virtio_gpu_bswap_32(void *ptr, 48 size_t size) 49 { 50 #ifdef HOST_WORDS_BIGENDIAN 51 52 size_t i; 53 struct virtio_gpu_ctrl_hdr *hdr = (struct virtio_gpu_ctrl_hdr *) ptr; 54 55 virtio_gpu_ctrl_hdr_bswap(hdr); 56 57 i = sizeof(struct virtio_gpu_ctrl_hdr); 58 while (i < size) { 59 le32_to_cpus((uint32_t *)(ptr + i)); 60 i = i + sizeof(uint32_t); 61 } 62 63 #endif 64 } 65 66 static void 67 virtio_gpu_t2d_bswap(struct virtio_gpu_transfer_to_host_2d *t2d) 68 { 69 virtio_gpu_ctrl_hdr_bswap(&t2d->hdr); 70 le32_to_cpus(&t2d->r.x); 71 le32_to_cpus(&t2d->r.y); 72 le32_to_cpus(&t2d->r.width); 73 le32_to_cpus(&t2d->r.height); 74 le64_to_cpus(&t2d->offset); 75 le32_to_cpus(&t2d->resource_id); 76 le32_to_cpus(&t2d->padding); 77 } 78 79 #ifdef CONFIG_VIRGL 80 #include <virglrenderer.h> 81 #define VIRGL(_g, _virgl, _simple, ...) \ 82 do { \ 83 if (_g->use_virgl_renderer) { \ 84 _virgl(__VA_ARGS__); \ 85 } else { \ 86 _simple(__VA_ARGS__); \ 87 } \ 88 } while (0) 89 #else 90 #define VIRGL(_g, _virgl, _simple, ...) \ 91 do { \ 92 _simple(__VA_ARGS__); \ 93 } while (0) 94 #endif 95 96 static void update_cursor_data_simple(VirtIOGPU *g, 97 struct virtio_gpu_scanout *s, 98 uint32_t resource_id) 99 { 100 struct virtio_gpu_simple_resource *res; 101 uint32_t pixels; 102 103 res = virtio_gpu_find_resource(g, resource_id); 104 if (!res) { 105 return; 106 } 107 108 if (pixman_image_get_width(res->image) != s->current_cursor->width || 109 pixman_image_get_height(res->image) != s->current_cursor->height) { 110 return; 111 } 112 113 pixels = s->current_cursor->width * s->current_cursor->height; 114 memcpy(s->current_cursor->data, 115 pixman_image_get_data(res->image), 116 pixels * sizeof(uint32_t)); 117 } 118 119 #ifdef CONFIG_VIRGL 120 121 static void update_cursor_data_virgl(VirtIOGPU *g, 122 struct virtio_gpu_scanout *s, 123 uint32_t resource_id) 124 { 125 uint32_t width, height; 126 uint32_t pixels, *data; 127 128 data = virgl_renderer_get_cursor_data(resource_id, &width, &height); 129 if (!data) { 130 return; 131 } 132 133 if (width != s->current_cursor->width || 134 height != s->current_cursor->height) { 135 free(data); 136 return; 137 } 138 139 pixels = s->current_cursor->width * s->current_cursor->height; 140 memcpy(s->current_cursor->data, data, pixels * sizeof(uint32_t)); 141 free(data); 142 } 143 144 #endif 145 146 static void update_cursor(VirtIOGPU *g, struct virtio_gpu_update_cursor *cursor) 147 { 148 struct virtio_gpu_scanout *s; 149 bool move = cursor->hdr.type == VIRTIO_GPU_CMD_MOVE_CURSOR; 150 151 if (cursor->pos.scanout_id >= g->conf.max_outputs) { 152 return; 153 } 154 s = &g->scanout[cursor->pos.scanout_id]; 155 156 trace_virtio_gpu_update_cursor(cursor->pos.scanout_id, 157 cursor->pos.x, 158 cursor->pos.y, 159 move ? "move" : "update", 160 cursor->resource_id); 161 162 if (!move) { 163 if (!s->current_cursor) { 164 s->current_cursor = cursor_alloc(64, 64); 165 } 166 167 s->current_cursor->hot_x = cursor->hot_x; 168 s->current_cursor->hot_y = cursor->hot_y; 169 170 if (cursor->resource_id > 0) { 171 VIRGL(g, update_cursor_data_virgl, update_cursor_data_simple, 172 g, s, cursor->resource_id); 173 } 174 dpy_cursor_define(s->con, s->current_cursor); 175 176 s->cursor = *cursor; 177 } else { 178 s->cursor.pos.x = cursor->pos.x; 179 s->cursor.pos.y = cursor->pos.y; 180 } 181 dpy_mouse_set(s->con, cursor->pos.x, cursor->pos.y, 182 cursor->resource_id ? 1 : 0); 183 } 184 185 static void virtio_gpu_get_config(VirtIODevice *vdev, uint8_t *config) 186 { 187 VirtIOGPU *g = VIRTIO_GPU(vdev); 188 memcpy(config, &g->virtio_config, sizeof(g->virtio_config)); 189 } 190 191 static void virtio_gpu_set_config(VirtIODevice *vdev, const uint8_t *config) 192 { 193 VirtIOGPU *g = VIRTIO_GPU(vdev); 194 struct virtio_gpu_config vgconfig; 195 196 memcpy(&vgconfig, config, sizeof(g->virtio_config)); 197 198 if (vgconfig.events_clear) { 199 g->virtio_config.events_read &= ~vgconfig.events_clear; 200 } 201 } 202 203 static uint64_t virtio_gpu_get_features(VirtIODevice *vdev, uint64_t features, 204 Error **errp) 205 { 206 VirtIOGPU *g = VIRTIO_GPU(vdev); 207 208 if (virtio_gpu_virgl_enabled(g->conf)) { 209 features |= (1 << VIRTIO_GPU_F_VIRGL); 210 } 211 if (virtio_gpu_edid_enabled(g->conf)) { 212 features |= (1 << VIRTIO_GPU_F_EDID); 213 } 214 return features; 215 } 216 217 static void virtio_gpu_set_features(VirtIODevice *vdev, uint64_t features) 218 { 219 static const uint32_t virgl = (1 << VIRTIO_GPU_F_VIRGL); 220 VirtIOGPU *g = VIRTIO_GPU(vdev); 221 222 g->use_virgl_renderer = ((features & virgl) == virgl); 223 trace_virtio_gpu_features(g->use_virgl_renderer); 224 } 225 226 static void virtio_gpu_notify_event(VirtIOGPU *g, uint32_t event_type) 227 { 228 g->virtio_config.events_read |= event_type; 229 virtio_notify_config(&g->parent_obj); 230 } 231 232 static struct virtio_gpu_simple_resource * 233 virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resource_id) 234 { 235 struct virtio_gpu_simple_resource *res; 236 237 QTAILQ_FOREACH(res, &g->reslist, next) { 238 if (res->resource_id == resource_id) { 239 return res; 240 } 241 } 242 return NULL; 243 } 244 245 void virtio_gpu_ctrl_response(VirtIOGPU *g, 246 struct virtio_gpu_ctrl_command *cmd, 247 struct virtio_gpu_ctrl_hdr *resp, 248 size_t resp_len) 249 { 250 size_t s; 251 252 if (cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_FENCE) { 253 resp->flags |= VIRTIO_GPU_FLAG_FENCE; 254 resp->fence_id = cmd->cmd_hdr.fence_id; 255 resp->ctx_id = cmd->cmd_hdr.ctx_id; 256 } 257 virtio_gpu_ctrl_hdr_bswap(resp); 258 s = iov_from_buf(cmd->elem.in_sg, cmd->elem.in_num, 0, resp, resp_len); 259 if (s != resp_len) { 260 qemu_log_mask(LOG_GUEST_ERROR, 261 "%s: response size incorrect %zu vs %zu\n", 262 __func__, s, resp_len); 263 } 264 virtqueue_push(cmd->vq, &cmd->elem, s); 265 virtio_notify(VIRTIO_DEVICE(g), cmd->vq); 266 cmd->finished = true; 267 } 268 269 void virtio_gpu_ctrl_response_nodata(VirtIOGPU *g, 270 struct virtio_gpu_ctrl_command *cmd, 271 enum virtio_gpu_ctrl_type type) 272 { 273 struct virtio_gpu_ctrl_hdr resp; 274 275 memset(&resp, 0, sizeof(resp)); 276 resp.type = type; 277 virtio_gpu_ctrl_response(g, cmd, &resp, sizeof(resp)); 278 } 279 280 static void 281 virtio_gpu_fill_display_info(VirtIOGPU *g, 282 struct virtio_gpu_resp_display_info *dpy_info) 283 { 284 int i; 285 286 for (i = 0; i < g->conf.max_outputs; i++) { 287 if (g->enabled_output_bitmask & (1 << i)) { 288 dpy_info->pmodes[i].enabled = 1; 289 dpy_info->pmodes[i].r.width = cpu_to_le32(g->req_state[i].width); 290 dpy_info->pmodes[i].r.height = cpu_to_le32(g->req_state[i].height); 291 } 292 } 293 } 294 295 void virtio_gpu_get_display_info(VirtIOGPU *g, 296 struct virtio_gpu_ctrl_command *cmd) 297 { 298 struct virtio_gpu_resp_display_info display_info; 299 300 trace_virtio_gpu_cmd_get_display_info(); 301 memset(&display_info, 0, sizeof(display_info)); 302 display_info.hdr.type = VIRTIO_GPU_RESP_OK_DISPLAY_INFO; 303 virtio_gpu_fill_display_info(g, &display_info); 304 virtio_gpu_ctrl_response(g, cmd, &display_info.hdr, 305 sizeof(display_info)); 306 } 307 308 static void 309 virtio_gpu_generate_edid(VirtIOGPU *g, int scanout, 310 struct virtio_gpu_resp_edid *edid) 311 { 312 qemu_edid_info info = { 313 .prefx = g->req_state[scanout].width, 314 .prefy = g->req_state[scanout].height, 315 }; 316 317 edid->size = cpu_to_le32(sizeof(edid->edid)); 318 qemu_edid_generate(edid->edid, sizeof(edid->edid), &info); 319 } 320 321 void virtio_gpu_get_edid(VirtIOGPU *g, 322 struct virtio_gpu_ctrl_command *cmd) 323 { 324 struct virtio_gpu_resp_edid edid; 325 struct virtio_gpu_cmd_get_edid get_edid; 326 327 VIRTIO_GPU_FILL_CMD(get_edid); 328 virtio_gpu_bswap_32(&get_edid, sizeof(get_edid)); 329 330 if (get_edid.scanout >= g->conf.max_outputs) { 331 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 332 return; 333 } 334 335 trace_virtio_gpu_cmd_get_edid(get_edid.scanout); 336 memset(&edid, 0, sizeof(edid)); 337 edid.hdr.type = VIRTIO_GPU_RESP_OK_EDID; 338 virtio_gpu_generate_edid(g, get_edid.scanout, &edid); 339 virtio_gpu_ctrl_response(g, cmd, &edid.hdr, sizeof(edid)); 340 } 341 342 static pixman_format_code_t get_pixman_format(uint32_t virtio_gpu_format) 343 { 344 switch (virtio_gpu_format) { 345 case VIRTIO_GPU_FORMAT_B8G8R8X8_UNORM: 346 return PIXMAN_BE_b8g8r8x8; 347 case VIRTIO_GPU_FORMAT_B8G8R8A8_UNORM: 348 return PIXMAN_BE_b8g8r8a8; 349 case VIRTIO_GPU_FORMAT_X8R8G8B8_UNORM: 350 return PIXMAN_BE_x8r8g8b8; 351 case VIRTIO_GPU_FORMAT_A8R8G8B8_UNORM: 352 return PIXMAN_BE_a8r8g8b8; 353 case VIRTIO_GPU_FORMAT_R8G8B8X8_UNORM: 354 return PIXMAN_BE_r8g8b8x8; 355 case VIRTIO_GPU_FORMAT_R8G8B8A8_UNORM: 356 return PIXMAN_BE_r8g8b8a8; 357 case VIRTIO_GPU_FORMAT_X8B8G8R8_UNORM: 358 return PIXMAN_BE_x8b8g8r8; 359 case VIRTIO_GPU_FORMAT_A8B8G8R8_UNORM: 360 return PIXMAN_BE_a8b8g8r8; 361 default: 362 return 0; 363 } 364 } 365 366 static uint32_t calc_image_hostmem(pixman_format_code_t pformat, 367 uint32_t width, uint32_t height) 368 { 369 /* Copied from pixman/pixman-bits-image.c, skip integer overflow check. 370 * pixman_image_create_bits will fail in case it overflow. 371 */ 372 373 int bpp = PIXMAN_FORMAT_BPP(pformat); 374 int stride = ((width * bpp + 0x1f) >> 5) * sizeof(uint32_t); 375 return height * stride; 376 } 377 378 static void virtio_gpu_resource_create_2d(VirtIOGPU *g, 379 struct virtio_gpu_ctrl_command *cmd) 380 { 381 pixman_format_code_t pformat; 382 struct virtio_gpu_simple_resource *res; 383 struct virtio_gpu_resource_create_2d c2d; 384 385 VIRTIO_GPU_FILL_CMD(c2d); 386 virtio_gpu_bswap_32(&c2d, sizeof(c2d)); 387 trace_virtio_gpu_cmd_res_create_2d(c2d.resource_id, c2d.format, 388 c2d.width, c2d.height); 389 390 if (c2d.resource_id == 0) { 391 qemu_log_mask(LOG_GUEST_ERROR, "%s: resource id 0 is not allowed\n", 392 __func__); 393 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 394 return; 395 } 396 397 res = virtio_gpu_find_resource(g, c2d.resource_id); 398 if (res) { 399 qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already exists %d\n", 400 __func__, c2d.resource_id); 401 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 402 return; 403 } 404 405 res = g_new0(struct virtio_gpu_simple_resource, 1); 406 407 res->width = c2d.width; 408 res->height = c2d.height; 409 res->format = c2d.format; 410 res->resource_id = c2d.resource_id; 411 412 pformat = get_pixman_format(c2d.format); 413 if (!pformat) { 414 qemu_log_mask(LOG_GUEST_ERROR, 415 "%s: host couldn't handle guest format %d\n", 416 __func__, c2d.format); 417 g_free(res); 418 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 419 return; 420 } 421 422 res->hostmem = calc_image_hostmem(pformat, c2d.width, c2d.height); 423 if (res->hostmem + g->hostmem < g->conf.max_hostmem) { 424 res->image = pixman_image_create_bits(pformat, 425 c2d.width, 426 c2d.height, 427 NULL, 0); 428 } 429 430 if (!res->image) { 431 qemu_log_mask(LOG_GUEST_ERROR, 432 "%s: resource creation failed %d %d %d\n", 433 __func__, c2d.resource_id, c2d.width, c2d.height); 434 g_free(res); 435 cmd->error = VIRTIO_GPU_RESP_ERR_OUT_OF_MEMORY; 436 return; 437 } 438 439 QTAILQ_INSERT_HEAD(&g->reslist, res, next); 440 g->hostmem += res->hostmem; 441 } 442 443 static void virtio_gpu_disable_scanout(VirtIOGPU *g, int scanout_id) 444 { 445 struct virtio_gpu_scanout *scanout = &g->scanout[scanout_id]; 446 struct virtio_gpu_simple_resource *res; 447 DisplaySurface *ds = NULL; 448 449 if (scanout->resource_id == 0) { 450 return; 451 } 452 453 res = virtio_gpu_find_resource(g, scanout->resource_id); 454 if (res) { 455 res->scanout_bitmask &= ~(1 << scanout_id); 456 } 457 458 if (scanout_id == 0) { 459 /* primary head */ 460 ds = qemu_create_message_surface(scanout->width ?: 640, 461 scanout->height ?: 480, 462 "Guest disabled display."); 463 } 464 dpy_gfx_replace_surface(scanout->con, ds); 465 scanout->resource_id = 0; 466 scanout->ds = NULL; 467 scanout->width = 0; 468 scanout->height = 0; 469 } 470 471 static void virtio_gpu_resource_destroy(VirtIOGPU *g, 472 struct virtio_gpu_simple_resource *res) 473 { 474 int i; 475 476 if (res->scanout_bitmask) { 477 for (i = 0; i < g->conf.max_outputs; i++) { 478 if (res->scanout_bitmask & (1 << i)) { 479 virtio_gpu_disable_scanout(g, i); 480 } 481 } 482 } 483 484 pixman_image_unref(res->image); 485 virtio_gpu_cleanup_mapping(g, res); 486 QTAILQ_REMOVE(&g->reslist, res, next); 487 g->hostmem -= res->hostmem; 488 g_free(res); 489 } 490 491 static void virtio_gpu_resource_unref(VirtIOGPU *g, 492 struct virtio_gpu_ctrl_command *cmd) 493 { 494 struct virtio_gpu_simple_resource *res; 495 struct virtio_gpu_resource_unref unref; 496 497 VIRTIO_GPU_FILL_CMD(unref); 498 virtio_gpu_bswap_32(&unref, sizeof(unref)); 499 trace_virtio_gpu_cmd_res_unref(unref.resource_id); 500 501 res = virtio_gpu_find_resource(g, unref.resource_id); 502 if (!res) { 503 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n", 504 __func__, unref.resource_id); 505 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 506 return; 507 } 508 virtio_gpu_resource_destroy(g, res); 509 } 510 511 static void virtio_gpu_transfer_to_host_2d(VirtIOGPU *g, 512 struct virtio_gpu_ctrl_command *cmd) 513 { 514 struct virtio_gpu_simple_resource *res; 515 int h; 516 uint32_t src_offset, dst_offset, stride; 517 int bpp; 518 pixman_format_code_t format; 519 struct virtio_gpu_transfer_to_host_2d t2d; 520 521 VIRTIO_GPU_FILL_CMD(t2d); 522 virtio_gpu_t2d_bswap(&t2d); 523 trace_virtio_gpu_cmd_res_xfer_toh_2d(t2d.resource_id); 524 525 res = virtio_gpu_find_resource(g, t2d.resource_id); 526 if (!res || !res->iov) { 527 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n", 528 __func__, t2d.resource_id); 529 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 530 return; 531 } 532 533 if (t2d.r.x > res->width || 534 t2d.r.y > res->height || 535 t2d.r.width > res->width || 536 t2d.r.height > res->height || 537 t2d.r.x + t2d.r.width > res->width || 538 t2d.r.y + t2d.r.height > res->height) { 539 qemu_log_mask(LOG_GUEST_ERROR, "%s: transfer bounds outside resource" 540 " bounds for resource %d: %d %d %d %d vs %d %d\n", 541 __func__, t2d.resource_id, t2d.r.x, t2d.r.y, 542 t2d.r.width, t2d.r.height, res->width, res->height); 543 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 544 return; 545 } 546 547 format = pixman_image_get_format(res->image); 548 bpp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(format), 8); 549 stride = pixman_image_get_stride(res->image); 550 551 if (t2d.offset || t2d.r.x || t2d.r.y || 552 t2d.r.width != pixman_image_get_width(res->image)) { 553 void *img_data = pixman_image_get_data(res->image); 554 for (h = 0; h < t2d.r.height; h++) { 555 src_offset = t2d.offset + stride * h; 556 dst_offset = (t2d.r.y + h) * stride + (t2d.r.x * bpp); 557 558 iov_to_buf(res->iov, res->iov_cnt, src_offset, 559 (uint8_t *)img_data 560 + dst_offset, t2d.r.width * bpp); 561 } 562 } else { 563 iov_to_buf(res->iov, res->iov_cnt, 0, 564 pixman_image_get_data(res->image), 565 pixman_image_get_stride(res->image) 566 * pixman_image_get_height(res->image)); 567 } 568 } 569 570 static void virtio_gpu_resource_flush(VirtIOGPU *g, 571 struct virtio_gpu_ctrl_command *cmd) 572 { 573 struct virtio_gpu_simple_resource *res; 574 struct virtio_gpu_resource_flush rf; 575 pixman_region16_t flush_region; 576 int i; 577 578 VIRTIO_GPU_FILL_CMD(rf); 579 virtio_gpu_bswap_32(&rf, sizeof(rf)); 580 trace_virtio_gpu_cmd_res_flush(rf.resource_id, 581 rf.r.width, rf.r.height, rf.r.x, rf.r.y); 582 583 res = virtio_gpu_find_resource(g, rf.resource_id); 584 if (!res) { 585 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n", 586 __func__, rf.resource_id); 587 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 588 return; 589 } 590 591 if (rf.r.x > res->width || 592 rf.r.y > res->height || 593 rf.r.width > res->width || 594 rf.r.height > res->height || 595 rf.r.x + rf.r.width > res->width || 596 rf.r.y + rf.r.height > res->height) { 597 qemu_log_mask(LOG_GUEST_ERROR, "%s: flush bounds outside resource" 598 " bounds for resource %d: %d %d %d %d vs %d %d\n", 599 __func__, rf.resource_id, rf.r.x, rf.r.y, 600 rf.r.width, rf.r.height, res->width, res->height); 601 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 602 return; 603 } 604 605 pixman_region_init_rect(&flush_region, 606 rf.r.x, rf.r.y, rf.r.width, rf.r.height); 607 for (i = 0; i < g->conf.max_outputs; i++) { 608 struct virtio_gpu_scanout *scanout; 609 pixman_region16_t region, finalregion; 610 pixman_box16_t *extents; 611 612 if (!(res->scanout_bitmask & (1 << i))) { 613 continue; 614 } 615 scanout = &g->scanout[i]; 616 617 pixman_region_init(&finalregion); 618 pixman_region_init_rect(®ion, scanout->x, scanout->y, 619 scanout->width, scanout->height); 620 621 pixman_region_intersect(&finalregion, &flush_region, ®ion); 622 pixman_region_translate(&finalregion, -scanout->x, -scanout->y); 623 extents = pixman_region_extents(&finalregion); 624 /* work out the area we need to update for each console */ 625 dpy_gfx_update(g->scanout[i].con, 626 extents->x1, extents->y1, 627 extents->x2 - extents->x1, 628 extents->y2 - extents->y1); 629 630 pixman_region_fini(®ion); 631 pixman_region_fini(&finalregion); 632 } 633 pixman_region_fini(&flush_region); 634 } 635 636 static void virtio_unref_resource(pixman_image_t *image, void *data) 637 { 638 pixman_image_unref(data); 639 } 640 641 static void virtio_gpu_set_scanout(VirtIOGPU *g, 642 struct virtio_gpu_ctrl_command *cmd) 643 { 644 struct virtio_gpu_simple_resource *res, *ores; 645 struct virtio_gpu_scanout *scanout; 646 pixman_format_code_t format; 647 uint32_t offset; 648 int bpp; 649 struct virtio_gpu_set_scanout ss; 650 651 VIRTIO_GPU_FILL_CMD(ss); 652 virtio_gpu_bswap_32(&ss, sizeof(ss)); 653 trace_virtio_gpu_cmd_set_scanout(ss.scanout_id, ss.resource_id, 654 ss.r.width, ss.r.height, ss.r.x, ss.r.y); 655 656 if (ss.scanout_id >= g->conf.max_outputs) { 657 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d", 658 __func__, ss.scanout_id); 659 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID; 660 return; 661 } 662 663 g->enable = 1; 664 if (ss.resource_id == 0) { 665 virtio_gpu_disable_scanout(g, ss.scanout_id); 666 return; 667 } 668 669 /* create a surface for this scanout */ 670 res = virtio_gpu_find_resource(g, ss.resource_id); 671 if (!res) { 672 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n", 673 __func__, ss.resource_id); 674 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 675 return; 676 } 677 678 if (ss.r.x > res->width || 679 ss.r.y > res->height || 680 ss.r.width > res->width || 681 ss.r.height > res->height || 682 ss.r.x + ss.r.width > res->width || 683 ss.r.y + ss.r.height > res->height) { 684 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout %d bounds for" 685 " resource %d, (%d,%d)+%d,%d vs %d %d\n", 686 __func__, ss.scanout_id, ss.resource_id, ss.r.x, ss.r.y, 687 ss.r.width, ss.r.height, res->width, res->height); 688 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 689 return; 690 } 691 692 scanout = &g->scanout[ss.scanout_id]; 693 694 format = pixman_image_get_format(res->image); 695 bpp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(format), 8); 696 offset = (ss.r.x * bpp) + ss.r.y * pixman_image_get_stride(res->image); 697 if (!scanout->ds || surface_data(scanout->ds) 698 != ((uint8_t *)pixman_image_get_data(res->image) + offset) || 699 scanout->width != ss.r.width || 700 scanout->height != ss.r.height) { 701 pixman_image_t *rect; 702 void *ptr = (uint8_t *)pixman_image_get_data(res->image) + offset; 703 rect = pixman_image_create_bits(format, ss.r.width, ss.r.height, ptr, 704 pixman_image_get_stride(res->image)); 705 pixman_image_ref(res->image); 706 pixman_image_set_destroy_function(rect, virtio_unref_resource, 707 res->image); 708 /* realloc the surface ptr */ 709 scanout->ds = qemu_create_displaysurface_pixman(rect); 710 if (!scanout->ds) { 711 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; 712 return; 713 } 714 pixman_image_unref(rect); 715 dpy_gfx_replace_surface(g->scanout[ss.scanout_id].con, scanout->ds); 716 } 717 718 ores = virtio_gpu_find_resource(g, scanout->resource_id); 719 if (ores) { 720 ores->scanout_bitmask &= ~(1 << ss.scanout_id); 721 } 722 723 res->scanout_bitmask |= (1 << ss.scanout_id); 724 scanout->resource_id = ss.resource_id; 725 scanout->x = ss.r.x; 726 scanout->y = ss.r.y; 727 scanout->width = ss.r.width; 728 scanout->height = ss.r.height; 729 } 730 731 int virtio_gpu_create_mapping_iov(VirtIOGPU *g, 732 struct virtio_gpu_resource_attach_backing *ab, 733 struct virtio_gpu_ctrl_command *cmd, 734 uint64_t **addr, struct iovec **iov) 735 { 736 struct virtio_gpu_mem_entry *ents; 737 size_t esize, s; 738 int i; 739 740 if (ab->nr_entries > 16384) { 741 qemu_log_mask(LOG_GUEST_ERROR, 742 "%s: nr_entries is too big (%d > 16384)\n", 743 __func__, ab->nr_entries); 744 return -1; 745 } 746 747 esize = sizeof(*ents) * ab->nr_entries; 748 ents = g_malloc(esize); 749 s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num, 750 sizeof(*ab), ents, esize); 751 if (s != esize) { 752 qemu_log_mask(LOG_GUEST_ERROR, 753 "%s: command data size incorrect %zu vs %zu\n", 754 __func__, s, esize); 755 g_free(ents); 756 return -1; 757 } 758 759 *iov = g_malloc0(sizeof(struct iovec) * ab->nr_entries); 760 if (addr) { 761 *addr = g_malloc0(sizeof(uint64_t) * ab->nr_entries); 762 } 763 for (i = 0; i < ab->nr_entries; i++) { 764 uint64_t a = le64_to_cpu(ents[i].addr); 765 uint32_t l = le32_to_cpu(ents[i].length); 766 hwaddr len = l; 767 (*iov)[i].iov_len = l; 768 (*iov)[i].iov_base = dma_memory_map(VIRTIO_DEVICE(g)->dma_as, 769 a, &len, DMA_DIRECTION_TO_DEVICE); 770 if (addr) { 771 (*addr)[i] = a; 772 } 773 if (!(*iov)[i].iov_base || len != l) { 774 qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to map MMIO memory for" 775 " resource %d element %d\n", 776 __func__, ab->resource_id, i); 777 virtio_gpu_cleanup_mapping_iov(g, *iov, i); 778 g_free(ents); 779 *iov = NULL; 780 if (addr) { 781 g_free(*addr); 782 *addr = NULL; 783 } 784 return -1; 785 } 786 } 787 g_free(ents); 788 return 0; 789 } 790 791 void virtio_gpu_cleanup_mapping_iov(VirtIOGPU *g, 792 struct iovec *iov, uint32_t count) 793 { 794 int i; 795 796 for (i = 0; i < count; i++) { 797 dma_memory_unmap(VIRTIO_DEVICE(g)->dma_as, 798 iov[i].iov_base, iov[i].iov_len, 799 DMA_DIRECTION_TO_DEVICE, 800 iov[i].iov_len); 801 } 802 g_free(iov); 803 } 804 805 static void virtio_gpu_cleanup_mapping(VirtIOGPU *g, 806 struct virtio_gpu_simple_resource *res) 807 { 808 virtio_gpu_cleanup_mapping_iov(g, res->iov, res->iov_cnt); 809 res->iov = NULL; 810 res->iov_cnt = 0; 811 g_free(res->addrs); 812 res->addrs = NULL; 813 } 814 815 static void 816 virtio_gpu_resource_attach_backing(VirtIOGPU *g, 817 struct virtio_gpu_ctrl_command *cmd) 818 { 819 struct virtio_gpu_simple_resource *res; 820 struct virtio_gpu_resource_attach_backing ab; 821 int ret; 822 823 VIRTIO_GPU_FILL_CMD(ab); 824 virtio_gpu_bswap_32(&ab, sizeof(ab)); 825 trace_virtio_gpu_cmd_res_back_attach(ab.resource_id); 826 827 res = virtio_gpu_find_resource(g, ab.resource_id); 828 if (!res) { 829 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n", 830 __func__, ab.resource_id); 831 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 832 return; 833 } 834 835 if (res->iov) { 836 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; 837 return; 838 } 839 840 ret = virtio_gpu_create_mapping_iov(g, &ab, cmd, &res->addrs, &res->iov); 841 if (ret != 0) { 842 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; 843 return; 844 } 845 846 res->iov_cnt = ab.nr_entries; 847 } 848 849 static void 850 virtio_gpu_resource_detach_backing(VirtIOGPU *g, 851 struct virtio_gpu_ctrl_command *cmd) 852 { 853 struct virtio_gpu_simple_resource *res; 854 struct virtio_gpu_resource_detach_backing detach; 855 856 VIRTIO_GPU_FILL_CMD(detach); 857 virtio_gpu_bswap_32(&detach, sizeof(detach)); 858 trace_virtio_gpu_cmd_res_back_detach(detach.resource_id); 859 860 res = virtio_gpu_find_resource(g, detach.resource_id); 861 if (!res || !res->iov) { 862 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n", 863 __func__, detach.resource_id); 864 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 865 return; 866 } 867 virtio_gpu_cleanup_mapping(g, res); 868 } 869 870 static void virtio_gpu_simple_process_cmd(VirtIOGPU *g, 871 struct virtio_gpu_ctrl_command *cmd) 872 { 873 VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr); 874 virtio_gpu_ctrl_hdr_bswap(&cmd->cmd_hdr); 875 876 switch (cmd->cmd_hdr.type) { 877 case VIRTIO_GPU_CMD_GET_DISPLAY_INFO: 878 virtio_gpu_get_display_info(g, cmd); 879 break; 880 case VIRTIO_GPU_CMD_GET_EDID: 881 virtio_gpu_get_edid(g, cmd); 882 break; 883 case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D: 884 virtio_gpu_resource_create_2d(g, cmd); 885 break; 886 case VIRTIO_GPU_CMD_RESOURCE_UNREF: 887 virtio_gpu_resource_unref(g, cmd); 888 break; 889 case VIRTIO_GPU_CMD_RESOURCE_FLUSH: 890 virtio_gpu_resource_flush(g, cmd); 891 break; 892 case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D: 893 virtio_gpu_transfer_to_host_2d(g, cmd); 894 break; 895 case VIRTIO_GPU_CMD_SET_SCANOUT: 896 virtio_gpu_set_scanout(g, cmd); 897 break; 898 case VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING: 899 virtio_gpu_resource_attach_backing(g, cmd); 900 break; 901 case VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING: 902 virtio_gpu_resource_detach_backing(g, cmd); 903 break; 904 default: 905 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; 906 break; 907 } 908 if (!cmd->finished) { 909 virtio_gpu_ctrl_response_nodata(g, cmd, cmd->error ? cmd->error : 910 VIRTIO_GPU_RESP_OK_NODATA); 911 } 912 } 913 914 static void virtio_gpu_handle_ctrl_cb(VirtIODevice *vdev, VirtQueue *vq) 915 { 916 VirtIOGPU *g = VIRTIO_GPU(vdev); 917 qemu_bh_schedule(g->ctrl_bh); 918 } 919 920 static void virtio_gpu_handle_cursor_cb(VirtIODevice *vdev, VirtQueue *vq) 921 { 922 VirtIOGPU *g = VIRTIO_GPU(vdev); 923 qemu_bh_schedule(g->cursor_bh); 924 } 925 926 void virtio_gpu_process_cmdq(VirtIOGPU *g) 927 { 928 struct virtio_gpu_ctrl_command *cmd; 929 930 while (!QTAILQ_EMPTY(&g->cmdq)) { 931 cmd = QTAILQ_FIRST(&g->cmdq); 932 933 if (g->renderer_blocked) { 934 break; 935 } 936 937 /* process command */ 938 VIRGL(g, virtio_gpu_virgl_process_cmd, virtio_gpu_simple_process_cmd, 939 g, cmd); 940 941 QTAILQ_REMOVE(&g->cmdq, cmd, next); 942 if (virtio_gpu_stats_enabled(g->conf)) { 943 g->stats.requests++; 944 } 945 946 if (!cmd->finished) { 947 QTAILQ_INSERT_TAIL(&g->fenceq, cmd, next); 948 g->inflight++; 949 if (virtio_gpu_stats_enabled(g->conf)) { 950 if (g->stats.max_inflight < g->inflight) { 951 g->stats.max_inflight = g->inflight; 952 } 953 fprintf(stderr, "inflight: %3d (+)\r", g->inflight); 954 } 955 } else { 956 g_free(cmd); 957 } 958 } 959 } 960 961 static void virtio_gpu_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq) 962 { 963 VirtIOGPU *g = VIRTIO_GPU(vdev); 964 struct virtio_gpu_ctrl_command *cmd; 965 966 if (!virtio_queue_ready(vq)) { 967 return; 968 } 969 970 #ifdef CONFIG_VIRGL 971 if (!g->renderer_inited && g->use_virgl_renderer) { 972 virtio_gpu_virgl_init(g); 973 g->renderer_inited = true; 974 } 975 #endif 976 977 cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command)); 978 while (cmd) { 979 cmd->vq = vq; 980 cmd->error = 0; 981 cmd->finished = false; 982 QTAILQ_INSERT_TAIL(&g->cmdq, cmd, next); 983 cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command)); 984 } 985 986 virtio_gpu_process_cmdq(g); 987 988 #ifdef CONFIG_VIRGL 989 if (g->use_virgl_renderer) { 990 virtio_gpu_virgl_fence_poll(g); 991 } 992 #endif 993 } 994 995 static void virtio_gpu_ctrl_bh(void *opaque) 996 { 997 VirtIOGPU *g = opaque; 998 virtio_gpu_handle_ctrl(&g->parent_obj, g->ctrl_vq); 999 } 1000 1001 static void virtio_gpu_handle_cursor(VirtIODevice *vdev, VirtQueue *vq) 1002 { 1003 VirtIOGPU *g = VIRTIO_GPU(vdev); 1004 VirtQueueElement *elem; 1005 size_t s; 1006 struct virtio_gpu_update_cursor cursor_info; 1007 1008 if (!virtio_queue_ready(vq)) { 1009 return; 1010 } 1011 for (;;) { 1012 elem = virtqueue_pop(vq, sizeof(VirtQueueElement)); 1013 if (!elem) { 1014 break; 1015 } 1016 1017 s = iov_to_buf(elem->out_sg, elem->out_num, 0, 1018 &cursor_info, sizeof(cursor_info)); 1019 if (s != sizeof(cursor_info)) { 1020 qemu_log_mask(LOG_GUEST_ERROR, 1021 "%s: cursor size incorrect %zu vs %zu\n", 1022 __func__, s, sizeof(cursor_info)); 1023 } else { 1024 virtio_gpu_bswap_32(&cursor_info, sizeof(cursor_info)); 1025 update_cursor(g, &cursor_info); 1026 } 1027 virtqueue_push(vq, elem, 0); 1028 virtio_notify(vdev, vq); 1029 g_free(elem); 1030 } 1031 } 1032 1033 static void virtio_gpu_cursor_bh(void *opaque) 1034 { 1035 VirtIOGPU *g = opaque; 1036 virtio_gpu_handle_cursor(&g->parent_obj, g->cursor_vq); 1037 } 1038 1039 static void virtio_gpu_invalidate_display(void *opaque) 1040 { 1041 } 1042 1043 static void virtio_gpu_update_display(void *opaque) 1044 { 1045 } 1046 1047 static void virtio_gpu_text_update(void *opaque, console_ch_t *chardata) 1048 { 1049 } 1050 1051 static int virtio_gpu_ui_info(void *opaque, uint32_t idx, QemuUIInfo *info) 1052 { 1053 VirtIOGPU *g = opaque; 1054 1055 if (idx >= g->conf.max_outputs) { 1056 return -1; 1057 } 1058 1059 g->req_state[idx].x = info->xoff; 1060 g->req_state[idx].y = info->yoff; 1061 g->req_state[idx].width = info->width; 1062 g->req_state[idx].height = info->height; 1063 1064 if (info->width && info->height) { 1065 g->enabled_output_bitmask |= (1 << idx); 1066 } else { 1067 g->enabled_output_bitmask &= ~(1 << idx); 1068 } 1069 1070 /* send event to guest */ 1071 virtio_gpu_notify_event(g, VIRTIO_GPU_EVENT_DISPLAY); 1072 return 0; 1073 } 1074 1075 static void virtio_gpu_gl_block(void *opaque, bool block) 1076 { 1077 VirtIOGPU *g = opaque; 1078 1079 if (block) { 1080 g->renderer_blocked++; 1081 } else { 1082 g->renderer_blocked--; 1083 } 1084 assert(g->renderer_blocked >= 0); 1085 1086 if (g->renderer_blocked == 0) { 1087 virtio_gpu_process_cmdq(g); 1088 } 1089 } 1090 1091 const GraphicHwOps virtio_gpu_ops = { 1092 .invalidate = virtio_gpu_invalidate_display, 1093 .gfx_update = virtio_gpu_update_display, 1094 .text_update = virtio_gpu_text_update, 1095 .ui_info = virtio_gpu_ui_info, 1096 .gl_block = virtio_gpu_gl_block, 1097 }; 1098 1099 static const VMStateDescription vmstate_virtio_gpu_scanout = { 1100 .name = "virtio-gpu-one-scanout", 1101 .version_id = 1, 1102 .fields = (VMStateField[]) { 1103 VMSTATE_UINT32(resource_id, struct virtio_gpu_scanout), 1104 VMSTATE_UINT32(width, struct virtio_gpu_scanout), 1105 VMSTATE_UINT32(height, struct virtio_gpu_scanout), 1106 VMSTATE_INT32(x, struct virtio_gpu_scanout), 1107 VMSTATE_INT32(y, struct virtio_gpu_scanout), 1108 VMSTATE_UINT32(cursor.resource_id, struct virtio_gpu_scanout), 1109 VMSTATE_UINT32(cursor.hot_x, struct virtio_gpu_scanout), 1110 VMSTATE_UINT32(cursor.hot_y, struct virtio_gpu_scanout), 1111 VMSTATE_UINT32(cursor.pos.x, struct virtio_gpu_scanout), 1112 VMSTATE_UINT32(cursor.pos.y, struct virtio_gpu_scanout), 1113 VMSTATE_END_OF_LIST() 1114 }, 1115 }; 1116 1117 static const VMStateDescription vmstate_virtio_gpu_scanouts = { 1118 .name = "virtio-gpu-scanouts", 1119 .version_id = 1, 1120 .fields = (VMStateField[]) { 1121 VMSTATE_INT32(enable, struct VirtIOGPU), 1122 VMSTATE_UINT32_EQUAL(conf.max_outputs, struct VirtIOGPU, NULL), 1123 VMSTATE_STRUCT_VARRAY_UINT32(scanout, struct VirtIOGPU, 1124 conf.max_outputs, 1, 1125 vmstate_virtio_gpu_scanout, 1126 struct virtio_gpu_scanout), 1127 VMSTATE_END_OF_LIST() 1128 }, 1129 }; 1130 1131 static int virtio_gpu_save(QEMUFile *f, void *opaque, size_t size, 1132 const VMStateField *field, QJSON *vmdesc) 1133 { 1134 VirtIOGPU *g = opaque; 1135 struct virtio_gpu_simple_resource *res; 1136 int i; 1137 1138 /* in 2d mode we should never find unprocessed commands here */ 1139 assert(QTAILQ_EMPTY(&g->cmdq)); 1140 1141 QTAILQ_FOREACH(res, &g->reslist, next) { 1142 qemu_put_be32(f, res->resource_id); 1143 qemu_put_be32(f, res->width); 1144 qemu_put_be32(f, res->height); 1145 qemu_put_be32(f, res->format); 1146 qemu_put_be32(f, res->iov_cnt); 1147 for (i = 0; i < res->iov_cnt; i++) { 1148 qemu_put_be64(f, res->addrs[i]); 1149 qemu_put_be32(f, res->iov[i].iov_len); 1150 } 1151 qemu_put_buffer(f, (void *)pixman_image_get_data(res->image), 1152 pixman_image_get_stride(res->image) * res->height); 1153 } 1154 qemu_put_be32(f, 0); /* end of list */ 1155 1156 return vmstate_save_state(f, &vmstate_virtio_gpu_scanouts, g, NULL); 1157 } 1158 1159 static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size, 1160 const VMStateField *field) 1161 { 1162 VirtIOGPU *g = opaque; 1163 struct virtio_gpu_simple_resource *res; 1164 struct virtio_gpu_scanout *scanout; 1165 uint32_t resource_id, pformat; 1166 int i; 1167 1168 g->hostmem = 0; 1169 1170 resource_id = qemu_get_be32(f); 1171 while (resource_id != 0) { 1172 res = g_new0(struct virtio_gpu_simple_resource, 1); 1173 res->resource_id = resource_id; 1174 res->width = qemu_get_be32(f); 1175 res->height = qemu_get_be32(f); 1176 res->format = qemu_get_be32(f); 1177 res->iov_cnt = qemu_get_be32(f); 1178 1179 /* allocate */ 1180 pformat = get_pixman_format(res->format); 1181 if (!pformat) { 1182 g_free(res); 1183 return -EINVAL; 1184 } 1185 res->image = pixman_image_create_bits(pformat, 1186 res->width, res->height, 1187 NULL, 0); 1188 if (!res->image) { 1189 g_free(res); 1190 return -EINVAL; 1191 } 1192 1193 res->hostmem = calc_image_hostmem(pformat, res->width, res->height); 1194 1195 res->addrs = g_new(uint64_t, res->iov_cnt); 1196 res->iov = g_new(struct iovec, res->iov_cnt); 1197 1198 /* read data */ 1199 for (i = 0; i < res->iov_cnt; i++) { 1200 res->addrs[i] = qemu_get_be64(f); 1201 res->iov[i].iov_len = qemu_get_be32(f); 1202 } 1203 qemu_get_buffer(f, (void *)pixman_image_get_data(res->image), 1204 pixman_image_get_stride(res->image) * res->height); 1205 1206 /* restore mapping */ 1207 for (i = 0; i < res->iov_cnt; i++) { 1208 hwaddr len = res->iov[i].iov_len; 1209 res->iov[i].iov_base = 1210 dma_memory_map(VIRTIO_DEVICE(g)->dma_as, 1211 res->addrs[i], &len, DMA_DIRECTION_TO_DEVICE); 1212 1213 if (!res->iov[i].iov_base || len != res->iov[i].iov_len) { 1214 /* Clean up the half-a-mapping we just created... */ 1215 if (res->iov[i].iov_base) { 1216 dma_memory_unmap(VIRTIO_DEVICE(g)->dma_as, 1217 res->iov[i].iov_base, 1218 res->iov[i].iov_len, 1219 DMA_DIRECTION_TO_DEVICE, 1220 res->iov[i].iov_len); 1221 } 1222 /* ...and the mappings for previous loop iterations */ 1223 res->iov_cnt = i; 1224 virtio_gpu_cleanup_mapping(g, res); 1225 pixman_image_unref(res->image); 1226 g_free(res); 1227 return -EINVAL; 1228 } 1229 } 1230 1231 QTAILQ_INSERT_HEAD(&g->reslist, res, next); 1232 g->hostmem += res->hostmem; 1233 1234 resource_id = qemu_get_be32(f); 1235 } 1236 1237 /* load & apply scanout state */ 1238 vmstate_load_state(f, &vmstate_virtio_gpu_scanouts, g, 1); 1239 for (i = 0; i < g->conf.max_outputs; i++) { 1240 scanout = &g->scanout[i]; 1241 if (!scanout->resource_id) { 1242 continue; 1243 } 1244 res = virtio_gpu_find_resource(g, scanout->resource_id); 1245 if (!res) { 1246 return -EINVAL; 1247 } 1248 scanout->ds = qemu_create_displaysurface_pixman(res->image); 1249 if (!scanout->ds) { 1250 return -EINVAL; 1251 } 1252 1253 dpy_gfx_replace_surface(scanout->con, scanout->ds); 1254 dpy_gfx_update_full(scanout->con); 1255 if (scanout->cursor.resource_id) { 1256 update_cursor(g, &scanout->cursor); 1257 } 1258 res->scanout_bitmask |= (1 << i); 1259 } 1260 1261 return 0; 1262 } 1263 1264 static void virtio_gpu_device_realize(DeviceState *qdev, Error **errp) 1265 { 1266 VirtIODevice *vdev = VIRTIO_DEVICE(qdev); 1267 VirtIOGPU *g = VIRTIO_GPU(qdev); 1268 bool have_virgl; 1269 Error *local_err = NULL; 1270 int i; 1271 1272 if (g->conf.max_outputs > VIRTIO_GPU_MAX_SCANOUTS) { 1273 error_setg(errp, "invalid max_outputs > %d", VIRTIO_GPU_MAX_SCANOUTS); 1274 return; 1275 } 1276 1277 g->use_virgl_renderer = false; 1278 #if !defined(CONFIG_VIRGL) || defined(HOST_WORDS_BIGENDIAN) 1279 have_virgl = false; 1280 #else 1281 have_virgl = display_opengl; 1282 #endif 1283 if (!have_virgl) { 1284 g->conf.flags &= ~(1 << VIRTIO_GPU_FLAG_VIRGL_ENABLED); 1285 } 1286 1287 if (virtio_gpu_virgl_enabled(g->conf)) { 1288 error_setg(&g->migration_blocker, "virgl is not yet migratable"); 1289 migrate_add_blocker(g->migration_blocker, &local_err); 1290 if (local_err) { 1291 error_propagate(errp, local_err); 1292 error_free(g->migration_blocker); 1293 return; 1294 } 1295 } 1296 1297 g->virtio_config.num_scanouts = cpu_to_le32(g->conf.max_outputs); 1298 virtio_init(VIRTIO_DEVICE(g), "virtio-gpu", VIRTIO_ID_GPU, 1299 sizeof(struct virtio_gpu_config)); 1300 1301 g->req_state[0].width = g->conf.xres; 1302 g->req_state[0].height = g->conf.yres; 1303 1304 if (virtio_gpu_virgl_enabled(g->conf)) { 1305 /* use larger control queue in 3d mode */ 1306 g->ctrl_vq = virtio_add_queue(vdev, 256, virtio_gpu_handle_ctrl_cb); 1307 g->cursor_vq = virtio_add_queue(vdev, 16, virtio_gpu_handle_cursor_cb); 1308 1309 #if defined(CONFIG_VIRGL) 1310 g->virtio_config.num_capsets = virtio_gpu_virgl_get_num_capsets(g); 1311 #else 1312 g->virtio_config.num_capsets = 0; 1313 #endif 1314 } else { 1315 g->ctrl_vq = virtio_add_queue(vdev, 64, virtio_gpu_handle_ctrl_cb); 1316 g->cursor_vq = virtio_add_queue(vdev, 16, virtio_gpu_handle_cursor_cb); 1317 } 1318 1319 g->ctrl_bh = qemu_bh_new(virtio_gpu_ctrl_bh, g); 1320 g->cursor_bh = qemu_bh_new(virtio_gpu_cursor_bh, g); 1321 QTAILQ_INIT(&g->reslist); 1322 QTAILQ_INIT(&g->cmdq); 1323 QTAILQ_INIT(&g->fenceq); 1324 1325 g->enabled_output_bitmask = 1; 1326 1327 for (i = 0; i < g->conf.max_outputs; i++) { 1328 g->scanout[i].con = 1329 graphic_console_init(DEVICE(g), i, &virtio_gpu_ops, g); 1330 if (i > 0) { 1331 dpy_gfx_replace_surface(g->scanout[i].con, NULL); 1332 } 1333 } 1334 } 1335 1336 static void virtio_gpu_device_unrealize(DeviceState *qdev, Error **errp) 1337 { 1338 VirtIOGPU *g = VIRTIO_GPU(qdev); 1339 if (g->migration_blocker) { 1340 migrate_del_blocker(g->migration_blocker); 1341 error_free(g->migration_blocker); 1342 } 1343 } 1344 1345 static void virtio_gpu_instance_init(Object *obj) 1346 { 1347 } 1348 1349 static void virtio_gpu_reset(VirtIODevice *vdev) 1350 { 1351 VirtIOGPU *g = VIRTIO_GPU(vdev); 1352 struct virtio_gpu_simple_resource *res, *tmp; 1353 int i; 1354 1355 g->enable = 0; 1356 1357 QTAILQ_FOREACH_SAFE(res, &g->reslist, next, tmp) { 1358 virtio_gpu_resource_destroy(g, res); 1359 } 1360 for (i = 0; i < g->conf.max_outputs; i++) { 1361 g->scanout[i].resource_id = 0; 1362 g->scanout[i].width = 0; 1363 g->scanout[i].height = 0; 1364 g->scanout[i].x = 0; 1365 g->scanout[i].y = 0; 1366 g->scanout[i].ds = NULL; 1367 } 1368 1369 #ifdef CONFIG_VIRGL 1370 if (g->use_virgl_renderer) { 1371 virtio_gpu_virgl_reset(g); 1372 g->use_virgl_renderer = 0; 1373 } 1374 #endif 1375 } 1376 1377 /* 1378 * For historical reasons virtio_gpu does not adhere to virtio migration 1379 * scheme as described in doc/virtio-migration.txt, in a sense that no 1380 * save/load callback are provided to the core. Instead the device data 1381 * is saved/loaded after the core data. 1382 * 1383 * Because of this we need a special vmsd. 1384 */ 1385 static const VMStateDescription vmstate_virtio_gpu = { 1386 .name = "virtio-gpu", 1387 .minimum_version_id = VIRTIO_GPU_VM_VERSION, 1388 .version_id = VIRTIO_GPU_VM_VERSION, 1389 .fields = (VMStateField[]) { 1390 VMSTATE_VIRTIO_DEVICE /* core */, 1391 { 1392 .name = "virtio-gpu", 1393 .info = &(const VMStateInfo) { 1394 .name = "virtio-gpu", 1395 .get = virtio_gpu_load, 1396 .put = virtio_gpu_save, 1397 }, 1398 .flags = VMS_SINGLE, 1399 } /* device */, 1400 VMSTATE_END_OF_LIST() 1401 }, 1402 }; 1403 1404 static Property virtio_gpu_properties[] = { 1405 DEFINE_PROP_UINT32("max_outputs", VirtIOGPU, conf.max_outputs, 1), 1406 DEFINE_PROP_SIZE("max_hostmem", VirtIOGPU, conf.max_hostmem, 256 * MiB), 1407 #ifdef CONFIG_VIRGL 1408 DEFINE_PROP_BIT("virgl", VirtIOGPU, conf.flags, 1409 VIRTIO_GPU_FLAG_VIRGL_ENABLED, true), 1410 DEFINE_PROP_BIT("stats", VirtIOGPU, conf.flags, 1411 VIRTIO_GPU_FLAG_STATS_ENABLED, false), 1412 #endif 1413 DEFINE_PROP_BIT("edid", VirtIOGPU, conf.flags, 1414 VIRTIO_GPU_FLAG_EDID_ENABLED, false), 1415 DEFINE_PROP_UINT32("xres", VirtIOGPU, conf.xres, 1024), 1416 DEFINE_PROP_UINT32("yres", VirtIOGPU, conf.yres, 768), 1417 DEFINE_PROP_END_OF_LIST(), 1418 }; 1419 1420 static void virtio_gpu_class_init(ObjectClass *klass, void *data) 1421 { 1422 DeviceClass *dc = DEVICE_CLASS(klass); 1423 VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); 1424 1425 vdc->realize = virtio_gpu_device_realize; 1426 vdc->unrealize = virtio_gpu_device_unrealize; 1427 vdc->get_config = virtio_gpu_get_config; 1428 vdc->set_config = virtio_gpu_set_config; 1429 vdc->get_features = virtio_gpu_get_features; 1430 vdc->set_features = virtio_gpu_set_features; 1431 1432 vdc->reset = virtio_gpu_reset; 1433 1434 set_bit(DEVICE_CATEGORY_DISPLAY, dc->categories); 1435 dc->props = virtio_gpu_properties; 1436 dc->vmsd = &vmstate_virtio_gpu; 1437 dc->hotpluggable = false; 1438 } 1439 1440 static const TypeInfo virtio_gpu_info = { 1441 .name = TYPE_VIRTIO_GPU, 1442 .parent = TYPE_VIRTIO_DEVICE, 1443 .instance_size = sizeof(VirtIOGPU), 1444 .instance_init = virtio_gpu_instance_init, 1445 .class_init = virtio_gpu_class_init, 1446 }; 1447 1448 static void virtio_register_types(void) 1449 { 1450 type_register_static(&virtio_gpu_info); 1451 } 1452 1453 type_init(virtio_register_types) 1454 1455 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctrl_hdr) != 24); 1456 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_update_cursor) != 56); 1457 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_unref) != 32); 1458 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_create_2d) != 40); 1459 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_set_scanout) != 48); 1460 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_flush) != 48); 1461 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_transfer_to_host_2d) != 56); 1462 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_mem_entry) != 16); 1463 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_attach_backing) != 32); 1464 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_detach_backing) != 32); 1465 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resp_display_info) != 408); 1466 1467 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_transfer_host_3d) != 72); 1468 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resource_create_3d) != 72); 1469 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctx_create) != 96); 1470 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctx_destroy) != 24); 1471 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_ctx_resource) != 32); 1472 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_cmd_submit) != 32); 1473 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_get_capset_info) != 32); 1474 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resp_capset_info) != 40); 1475 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_get_capset) != 32); 1476 QEMU_BUILD_BUG_ON(sizeof(struct virtio_gpu_resp_capset) != 24); 1477