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/iov.h" 17 #include "ui/console.h" 18 #include "trace.h" 19 #include "sysemu/dma.h" 20 #include "sysemu/sysemu.h" 21 #include "hw/virtio/virtio.h" 22 #include "migration/qemu-file-types.h" 23 #include "hw/virtio/virtio-gpu.h" 24 #include "hw/virtio/virtio-gpu-bswap.h" 25 #include "hw/virtio/virtio-gpu-pixman.h" 26 #include "hw/virtio/virtio-bus.h" 27 #include "hw/display/edid.h" 28 #include "hw/qdev-properties.h" 29 #include "qemu/log.h" 30 #include "qemu/module.h" 31 #include "qapi/error.h" 32 #include "qemu/error-report.h" 33 34 #define VIRTIO_GPU_VM_VERSION 1 35 36 static struct virtio_gpu_simple_resource* 37 virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resource_id); 38 static struct virtio_gpu_simple_resource * 39 virtio_gpu_find_check_resource(VirtIOGPU *g, uint32_t resource_id, 40 bool require_backing, 41 const char *caller, uint32_t *error); 42 43 static void virtio_gpu_cleanup_mapping(VirtIOGPU *g, 44 struct virtio_gpu_simple_resource *res); 45 46 void virtio_gpu_update_cursor_data(VirtIOGPU *g, 47 struct virtio_gpu_scanout *s, 48 uint32_t resource_id) 49 { 50 struct virtio_gpu_simple_resource *res; 51 uint32_t pixels; 52 void *data; 53 54 res = virtio_gpu_find_check_resource(g, resource_id, false, 55 __func__, NULL); 56 if (!res) { 57 return; 58 } 59 60 if (res->blob_size) { 61 if (res->blob_size < (s->current_cursor->width * 62 s->current_cursor->height * 4)) { 63 return; 64 } 65 data = res->blob; 66 } else { 67 if (pixman_image_get_width(res->image) != s->current_cursor->width || 68 pixman_image_get_height(res->image) != s->current_cursor->height) { 69 return; 70 } 71 data = pixman_image_get_data(res->image); 72 } 73 74 pixels = s->current_cursor->width * s->current_cursor->height; 75 memcpy(s->current_cursor->data, data, 76 pixels * sizeof(uint32_t)); 77 } 78 79 static void update_cursor(VirtIOGPU *g, struct virtio_gpu_update_cursor *cursor) 80 { 81 struct virtio_gpu_scanout *s; 82 VirtIOGPUClass *vgc = VIRTIO_GPU_GET_CLASS(g); 83 bool move = cursor->hdr.type == VIRTIO_GPU_CMD_MOVE_CURSOR; 84 85 if (cursor->pos.scanout_id >= g->parent_obj.conf.max_outputs) { 86 return; 87 } 88 s = &g->parent_obj.scanout[cursor->pos.scanout_id]; 89 90 trace_virtio_gpu_update_cursor(cursor->pos.scanout_id, 91 cursor->pos.x, 92 cursor->pos.y, 93 move ? "move" : "update", 94 cursor->resource_id); 95 96 if (!move) { 97 if (!s->current_cursor) { 98 s->current_cursor = cursor_alloc(64, 64); 99 } 100 101 s->current_cursor->hot_x = cursor->hot_x; 102 s->current_cursor->hot_y = cursor->hot_y; 103 104 if (cursor->resource_id > 0) { 105 vgc->update_cursor_data(g, s, cursor->resource_id); 106 } 107 dpy_cursor_define(s->con, s->current_cursor); 108 109 s->cursor = *cursor; 110 } else { 111 s->cursor.pos.x = cursor->pos.x; 112 s->cursor.pos.y = cursor->pos.y; 113 } 114 dpy_mouse_set(s->con, cursor->pos.x, cursor->pos.y, 115 cursor->resource_id ? 1 : 0); 116 } 117 118 static struct virtio_gpu_simple_resource * 119 virtio_gpu_find_resource(VirtIOGPU *g, uint32_t resource_id) 120 { 121 struct virtio_gpu_simple_resource *res; 122 123 QTAILQ_FOREACH(res, &g->reslist, next) { 124 if (res->resource_id == resource_id) { 125 return res; 126 } 127 } 128 return NULL; 129 } 130 131 static struct virtio_gpu_simple_resource * 132 virtio_gpu_find_check_resource(VirtIOGPU *g, uint32_t resource_id, 133 bool require_backing, 134 const char *caller, uint32_t *error) 135 { 136 struct virtio_gpu_simple_resource *res; 137 138 res = virtio_gpu_find_resource(g, resource_id); 139 if (!res) { 140 qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid resource specified %d\n", 141 caller, resource_id); 142 if (error) { 143 *error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 144 } 145 return NULL; 146 } 147 148 if (require_backing) { 149 if (!res->iov || (!res->image && !res->blob)) { 150 qemu_log_mask(LOG_GUEST_ERROR, "%s: no backing storage %d\n", 151 caller, resource_id); 152 if (error) { 153 *error = VIRTIO_GPU_RESP_ERR_UNSPEC; 154 } 155 return NULL; 156 } 157 } 158 159 return res; 160 } 161 162 void virtio_gpu_ctrl_response(VirtIOGPU *g, 163 struct virtio_gpu_ctrl_command *cmd, 164 struct virtio_gpu_ctrl_hdr *resp, 165 size_t resp_len) 166 { 167 size_t s; 168 169 if (cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_FENCE) { 170 resp->flags |= VIRTIO_GPU_FLAG_FENCE; 171 resp->fence_id = cmd->cmd_hdr.fence_id; 172 resp->ctx_id = cmd->cmd_hdr.ctx_id; 173 } 174 virtio_gpu_ctrl_hdr_bswap(resp); 175 s = iov_from_buf(cmd->elem.in_sg, cmd->elem.in_num, 0, resp, resp_len); 176 if (s != resp_len) { 177 qemu_log_mask(LOG_GUEST_ERROR, 178 "%s: response size incorrect %zu vs %zu\n", 179 __func__, s, resp_len); 180 } 181 virtqueue_push(cmd->vq, &cmd->elem, s); 182 virtio_notify(VIRTIO_DEVICE(g), cmd->vq); 183 cmd->finished = true; 184 } 185 186 void virtio_gpu_ctrl_response_nodata(VirtIOGPU *g, 187 struct virtio_gpu_ctrl_command *cmd, 188 enum virtio_gpu_ctrl_type type) 189 { 190 struct virtio_gpu_ctrl_hdr resp; 191 192 memset(&resp, 0, sizeof(resp)); 193 resp.type = type; 194 virtio_gpu_ctrl_response(g, cmd, &resp, sizeof(resp)); 195 } 196 197 void virtio_gpu_get_display_info(VirtIOGPU *g, 198 struct virtio_gpu_ctrl_command *cmd) 199 { 200 struct virtio_gpu_resp_display_info display_info; 201 202 trace_virtio_gpu_cmd_get_display_info(); 203 memset(&display_info, 0, sizeof(display_info)); 204 display_info.hdr.type = VIRTIO_GPU_RESP_OK_DISPLAY_INFO; 205 virtio_gpu_base_fill_display_info(VIRTIO_GPU_BASE(g), &display_info); 206 virtio_gpu_ctrl_response(g, cmd, &display_info.hdr, 207 sizeof(display_info)); 208 } 209 210 static void 211 virtio_gpu_generate_edid(VirtIOGPU *g, int scanout, 212 struct virtio_gpu_resp_edid *edid) 213 { 214 VirtIOGPUBase *b = VIRTIO_GPU_BASE(g); 215 qemu_edid_info info = { 216 .width_mm = b->req_state[scanout].width_mm, 217 .height_mm = b->req_state[scanout].height_mm, 218 .prefx = b->req_state[scanout].width, 219 .prefy = b->req_state[scanout].height, 220 }; 221 222 edid->size = cpu_to_le32(sizeof(edid->edid)); 223 qemu_edid_generate(edid->edid, sizeof(edid->edid), &info); 224 } 225 226 void virtio_gpu_get_edid(VirtIOGPU *g, 227 struct virtio_gpu_ctrl_command *cmd) 228 { 229 struct virtio_gpu_resp_edid edid; 230 struct virtio_gpu_cmd_get_edid get_edid; 231 VirtIOGPUBase *b = VIRTIO_GPU_BASE(g); 232 233 VIRTIO_GPU_FILL_CMD(get_edid); 234 virtio_gpu_bswap_32(&get_edid, sizeof(get_edid)); 235 236 if (get_edid.scanout >= b->conf.max_outputs) { 237 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 238 return; 239 } 240 241 trace_virtio_gpu_cmd_get_edid(get_edid.scanout); 242 memset(&edid, 0, sizeof(edid)); 243 edid.hdr.type = VIRTIO_GPU_RESP_OK_EDID; 244 virtio_gpu_generate_edid(g, get_edid.scanout, &edid); 245 virtio_gpu_ctrl_response(g, cmd, &edid.hdr, sizeof(edid)); 246 } 247 248 static uint32_t calc_image_hostmem(pixman_format_code_t pformat, 249 uint32_t width, uint32_t height) 250 { 251 /* Copied from pixman/pixman-bits-image.c, skip integer overflow check. 252 * pixman_image_create_bits will fail in case it overflow. 253 */ 254 255 int bpp = PIXMAN_FORMAT_BPP(pformat); 256 int stride = ((width * bpp + 0x1f) >> 5) * sizeof(uint32_t); 257 return height * stride; 258 } 259 260 static void virtio_gpu_resource_create_2d(VirtIOGPU *g, 261 struct virtio_gpu_ctrl_command *cmd) 262 { 263 pixman_format_code_t pformat; 264 struct virtio_gpu_simple_resource *res; 265 struct virtio_gpu_resource_create_2d c2d; 266 267 VIRTIO_GPU_FILL_CMD(c2d); 268 virtio_gpu_bswap_32(&c2d, sizeof(c2d)); 269 trace_virtio_gpu_cmd_res_create_2d(c2d.resource_id, c2d.format, 270 c2d.width, c2d.height); 271 272 if (c2d.resource_id == 0) { 273 qemu_log_mask(LOG_GUEST_ERROR, "%s: resource id 0 is not allowed\n", 274 __func__); 275 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 276 return; 277 } 278 279 res = virtio_gpu_find_resource(g, c2d.resource_id); 280 if (res) { 281 qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already exists %d\n", 282 __func__, c2d.resource_id); 283 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 284 return; 285 } 286 287 res = g_new0(struct virtio_gpu_simple_resource, 1); 288 289 res->width = c2d.width; 290 res->height = c2d.height; 291 res->format = c2d.format; 292 res->resource_id = c2d.resource_id; 293 294 pformat = virtio_gpu_get_pixman_format(c2d.format); 295 if (!pformat) { 296 qemu_log_mask(LOG_GUEST_ERROR, 297 "%s: host couldn't handle guest format %d\n", 298 __func__, c2d.format); 299 g_free(res); 300 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 301 return; 302 } 303 304 res->hostmem = calc_image_hostmem(pformat, c2d.width, c2d.height); 305 if (res->hostmem + g->hostmem < g->conf_max_hostmem) { 306 res->image = pixman_image_create_bits(pformat, 307 c2d.width, 308 c2d.height, 309 NULL, 0); 310 } 311 312 if (!res->image) { 313 qemu_log_mask(LOG_GUEST_ERROR, 314 "%s: resource creation failed %d %d %d\n", 315 __func__, c2d.resource_id, c2d.width, c2d.height); 316 g_free(res); 317 cmd->error = VIRTIO_GPU_RESP_ERR_OUT_OF_MEMORY; 318 return; 319 } 320 321 QTAILQ_INSERT_HEAD(&g->reslist, res, next); 322 g->hostmem += res->hostmem; 323 } 324 325 static void virtio_gpu_resource_create_blob(VirtIOGPU *g, 326 struct virtio_gpu_ctrl_command *cmd) 327 { 328 struct virtio_gpu_simple_resource *res; 329 struct virtio_gpu_resource_create_blob cblob; 330 int ret; 331 332 VIRTIO_GPU_FILL_CMD(cblob); 333 virtio_gpu_create_blob_bswap(&cblob); 334 trace_virtio_gpu_cmd_res_create_blob(cblob.resource_id, cblob.size); 335 336 if (cblob.resource_id == 0) { 337 qemu_log_mask(LOG_GUEST_ERROR, "%s: resource id 0 is not allowed\n", 338 __func__); 339 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 340 return; 341 } 342 343 if (cblob.blob_mem != VIRTIO_GPU_BLOB_MEM_GUEST && 344 cblob.blob_flags != VIRTIO_GPU_BLOB_FLAG_USE_SHAREABLE) { 345 qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid memory type\n", 346 __func__); 347 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 348 return; 349 } 350 351 if (virtio_gpu_find_resource(g, cblob.resource_id)) { 352 qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already exists %d\n", 353 __func__, cblob.resource_id); 354 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 355 return; 356 } 357 358 res = g_new0(struct virtio_gpu_simple_resource, 1); 359 res->resource_id = cblob.resource_id; 360 res->blob_size = cblob.size; 361 362 ret = virtio_gpu_create_mapping_iov(g, cblob.nr_entries, sizeof(cblob), 363 cmd, &res->addrs, &res->iov, 364 &res->iov_cnt); 365 if (ret != 0 || res->iov) { 366 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; 367 g_free(res); 368 return; 369 } 370 371 virtio_gpu_init_udmabuf(res); 372 QTAILQ_INSERT_HEAD(&g->reslist, res, next); 373 } 374 375 static void virtio_gpu_disable_scanout(VirtIOGPU *g, int scanout_id) 376 { 377 struct virtio_gpu_scanout *scanout = &g->parent_obj.scanout[scanout_id]; 378 struct virtio_gpu_simple_resource *res; 379 380 if (scanout->resource_id == 0) { 381 return; 382 } 383 384 res = virtio_gpu_find_resource(g, scanout->resource_id); 385 if (res) { 386 res->scanout_bitmask &= ~(1 << scanout_id); 387 } 388 389 dpy_gfx_replace_surface(scanout->con, NULL); 390 scanout->resource_id = 0; 391 scanout->ds = NULL; 392 scanout->width = 0; 393 scanout->height = 0; 394 } 395 396 static void virtio_gpu_resource_destroy(VirtIOGPU *g, 397 struct virtio_gpu_simple_resource *res) 398 { 399 int i; 400 401 if (res->scanout_bitmask) { 402 for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { 403 if (res->scanout_bitmask & (1 << i)) { 404 virtio_gpu_disable_scanout(g, i); 405 } 406 } 407 } 408 409 qemu_pixman_image_unref(res->image); 410 virtio_gpu_cleanup_mapping(g, res); 411 QTAILQ_REMOVE(&g->reslist, res, next); 412 g->hostmem -= res->hostmem; 413 g_free(res); 414 } 415 416 static void virtio_gpu_resource_unref(VirtIOGPU *g, 417 struct virtio_gpu_ctrl_command *cmd) 418 { 419 struct virtio_gpu_simple_resource *res; 420 struct virtio_gpu_resource_unref unref; 421 422 VIRTIO_GPU_FILL_CMD(unref); 423 virtio_gpu_bswap_32(&unref, sizeof(unref)); 424 trace_virtio_gpu_cmd_res_unref(unref.resource_id); 425 426 res = virtio_gpu_find_resource(g, unref.resource_id); 427 if (!res) { 428 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n", 429 __func__, unref.resource_id); 430 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 431 return; 432 } 433 virtio_gpu_resource_destroy(g, res); 434 } 435 436 static void virtio_gpu_transfer_to_host_2d(VirtIOGPU *g, 437 struct virtio_gpu_ctrl_command *cmd) 438 { 439 struct virtio_gpu_simple_resource *res; 440 int h; 441 uint32_t src_offset, dst_offset, stride; 442 int bpp; 443 pixman_format_code_t format; 444 struct virtio_gpu_transfer_to_host_2d t2d; 445 446 VIRTIO_GPU_FILL_CMD(t2d); 447 virtio_gpu_t2d_bswap(&t2d); 448 trace_virtio_gpu_cmd_res_xfer_toh_2d(t2d.resource_id); 449 450 res = virtio_gpu_find_check_resource(g, t2d.resource_id, true, 451 __func__, &cmd->error); 452 if (!res || res->blob) { 453 return; 454 } 455 456 if (t2d.r.x > res->width || 457 t2d.r.y > res->height || 458 t2d.r.width > res->width || 459 t2d.r.height > res->height || 460 t2d.r.x + t2d.r.width > res->width || 461 t2d.r.y + t2d.r.height > res->height) { 462 qemu_log_mask(LOG_GUEST_ERROR, "%s: transfer bounds outside resource" 463 " bounds for resource %d: %d %d %d %d vs %d %d\n", 464 __func__, t2d.resource_id, t2d.r.x, t2d.r.y, 465 t2d.r.width, t2d.r.height, res->width, res->height); 466 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 467 return; 468 } 469 470 format = pixman_image_get_format(res->image); 471 bpp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(format), 8); 472 stride = pixman_image_get_stride(res->image); 473 474 if (t2d.offset || t2d.r.x || t2d.r.y || 475 t2d.r.width != pixman_image_get_width(res->image)) { 476 void *img_data = pixman_image_get_data(res->image); 477 for (h = 0; h < t2d.r.height; h++) { 478 src_offset = t2d.offset + stride * h; 479 dst_offset = (t2d.r.y + h) * stride + (t2d.r.x * bpp); 480 481 iov_to_buf(res->iov, res->iov_cnt, src_offset, 482 (uint8_t *)img_data 483 + dst_offset, t2d.r.width * bpp); 484 } 485 } else { 486 iov_to_buf(res->iov, res->iov_cnt, 0, 487 pixman_image_get_data(res->image), 488 pixman_image_get_stride(res->image) 489 * pixman_image_get_height(res->image)); 490 } 491 } 492 493 static void virtio_gpu_resource_flush(VirtIOGPU *g, 494 struct virtio_gpu_ctrl_command *cmd) 495 { 496 struct virtio_gpu_simple_resource *res; 497 struct virtio_gpu_resource_flush rf; 498 struct virtio_gpu_scanout *scanout; 499 pixman_region16_t flush_region; 500 int i; 501 502 VIRTIO_GPU_FILL_CMD(rf); 503 virtio_gpu_bswap_32(&rf, sizeof(rf)); 504 trace_virtio_gpu_cmd_res_flush(rf.resource_id, 505 rf.r.width, rf.r.height, rf.r.x, rf.r.y); 506 507 res = virtio_gpu_find_check_resource(g, rf.resource_id, false, 508 __func__, &cmd->error); 509 if (!res) { 510 return; 511 } 512 513 if (res->blob) { 514 for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { 515 scanout = &g->parent_obj.scanout[i]; 516 if (scanout->resource_id == res->resource_id && 517 console_has_gl(scanout->con)) { 518 dpy_gl_update(scanout->con, 0, 0, scanout->width, 519 scanout->height); 520 return; 521 } 522 } 523 } 524 525 if (!res->blob && 526 (rf.r.x > res->width || 527 rf.r.y > res->height || 528 rf.r.width > res->width || 529 rf.r.height > res->height || 530 rf.r.x + rf.r.width > res->width || 531 rf.r.y + rf.r.height > res->height)) { 532 qemu_log_mask(LOG_GUEST_ERROR, "%s: flush bounds outside resource" 533 " bounds for resource %d: %d %d %d %d vs %d %d\n", 534 __func__, rf.resource_id, rf.r.x, rf.r.y, 535 rf.r.width, rf.r.height, res->width, res->height); 536 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 537 return; 538 } 539 540 pixman_region_init_rect(&flush_region, 541 rf.r.x, rf.r.y, rf.r.width, rf.r.height); 542 for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { 543 pixman_region16_t region, finalregion; 544 pixman_box16_t *extents; 545 546 if (!(res->scanout_bitmask & (1 << i))) { 547 continue; 548 } 549 scanout = &g->parent_obj.scanout[i]; 550 551 pixman_region_init(&finalregion); 552 pixman_region_init_rect(®ion, scanout->x, scanout->y, 553 scanout->width, scanout->height); 554 555 pixman_region_intersect(&finalregion, &flush_region, ®ion); 556 pixman_region_translate(&finalregion, -scanout->x, -scanout->y); 557 extents = pixman_region_extents(&finalregion); 558 /* work out the area we need to update for each console */ 559 dpy_gfx_update(g->parent_obj.scanout[i].con, 560 extents->x1, extents->y1, 561 extents->x2 - extents->x1, 562 extents->y2 - extents->y1); 563 564 pixman_region_fini(®ion); 565 pixman_region_fini(&finalregion); 566 } 567 pixman_region_fini(&flush_region); 568 } 569 570 static void virtio_unref_resource(pixman_image_t *image, void *data) 571 { 572 pixman_image_unref(data); 573 } 574 575 static void virtio_gpu_update_scanout(VirtIOGPU *g, 576 uint32_t scanout_id, 577 struct virtio_gpu_simple_resource *res, 578 struct virtio_gpu_rect *r) 579 { 580 struct virtio_gpu_simple_resource *ores; 581 struct virtio_gpu_scanout *scanout; 582 583 scanout = &g->parent_obj.scanout[scanout_id]; 584 ores = virtio_gpu_find_resource(g, scanout->resource_id); 585 if (ores) { 586 ores->scanout_bitmask &= ~(1 << scanout_id); 587 } 588 589 res->scanout_bitmask |= (1 << scanout_id); 590 scanout->resource_id = res->resource_id; 591 scanout->x = r->x; 592 scanout->y = r->y; 593 scanout->width = r->width; 594 scanout->height = r->height; 595 } 596 597 static void virtio_gpu_do_set_scanout(VirtIOGPU *g, 598 uint32_t scanout_id, 599 struct virtio_gpu_framebuffer *fb, 600 struct virtio_gpu_simple_resource *res, 601 struct virtio_gpu_rect *r, 602 uint32_t *error) 603 { 604 struct virtio_gpu_scanout *scanout; 605 uint8_t *data; 606 607 scanout = &g->parent_obj.scanout[scanout_id]; 608 609 if (r->x > fb->width || 610 r->y > fb->height || 611 r->width < 16 || 612 r->height < 16 || 613 r->width > fb->width || 614 r->height > fb->height || 615 r->x + r->width > fb->width || 616 r->y + r->height > fb->height) { 617 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout %d bounds for" 618 " resource %d, rect (%d,%d)+%d,%d, fb %d %d\n", 619 __func__, scanout_id, res->resource_id, 620 r->x, r->y, r->width, r->height, 621 fb->width, fb->height); 622 *error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 623 return; 624 } 625 626 g->parent_obj.enable = 1; 627 628 if (res->blob) { 629 if (console_has_gl(scanout->con)) { 630 if (!virtio_gpu_update_dmabuf(g, scanout_id, res, fb)) { 631 virtio_gpu_update_scanout(g, scanout_id, res, r); 632 return; 633 } 634 } 635 636 data = res->blob; 637 } else { 638 data = (uint8_t *)pixman_image_get_data(res->image); 639 } 640 641 /* create a surface for this scanout */ 642 if ((res->blob && !console_has_gl(scanout->con)) || 643 !scanout->ds || 644 surface_data(scanout->ds) != data + fb->offset || 645 scanout->width != r->width || 646 scanout->height != r->height) { 647 pixman_image_t *rect; 648 void *ptr = data + fb->offset; 649 rect = pixman_image_create_bits(fb->format, r->width, r->height, 650 ptr, fb->stride); 651 652 if (res->image) { 653 pixman_image_ref(res->image); 654 pixman_image_set_destroy_function(rect, virtio_unref_resource, 655 res->image); 656 } 657 658 /* realloc the surface ptr */ 659 scanout->ds = qemu_create_displaysurface_pixman(rect); 660 if (!scanout->ds) { 661 *error = VIRTIO_GPU_RESP_ERR_UNSPEC; 662 return; 663 } 664 665 pixman_image_unref(rect); 666 dpy_gfx_replace_surface(g->parent_obj.scanout[scanout_id].con, 667 scanout->ds); 668 } 669 670 virtio_gpu_update_scanout(g, scanout_id, res, r); 671 } 672 673 static void virtio_gpu_set_scanout(VirtIOGPU *g, 674 struct virtio_gpu_ctrl_command *cmd) 675 { 676 struct virtio_gpu_simple_resource *res; 677 struct virtio_gpu_framebuffer fb = { 0 }; 678 struct virtio_gpu_set_scanout ss; 679 680 VIRTIO_GPU_FILL_CMD(ss); 681 virtio_gpu_bswap_32(&ss, sizeof(ss)); 682 trace_virtio_gpu_cmd_set_scanout(ss.scanout_id, ss.resource_id, 683 ss.r.width, ss.r.height, ss.r.x, ss.r.y); 684 685 if (ss.scanout_id >= g->parent_obj.conf.max_outputs) { 686 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d", 687 __func__, ss.scanout_id); 688 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID; 689 return; 690 } 691 692 if (ss.resource_id == 0) { 693 virtio_gpu_disable_scanout(g, ss.scanout_id); 694 return; 695 } 696 697 res = virtio_gpu_find_check_resource(g, ss.resource_id, true, 698 __func__, &cmd->error); 699 if (!res) { 700 return; 701 } 702 703 fb.format = pixman_image_get_format(res->image); 704 fb.bytes_pp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(fb.format), 8); 705 fb.width = pixman_image_get_width(res->image); 706 fb.height = pixman_image_get_height(res->image); 707 fb.stride = pixman_image_get_stride(res->image); 708 fb.offset = ss.r.x * fb.bytes_pp + ss.r.y * fb.stride; 709 710 virtio_gpu_do_set_scanout(g, ss.scanout_id, 711 &fb, res, &ss.r, &cmd->error); 712 } 713 714 static void virtio_gpu_set_scanout_blob(VirtIOGPU *g, 715 struct virtio_gpu_ctrl_command *cmd) 716 { 717 struct virtio_gpu_simple_resource *res; 718 struct virtio_gpu_framebuffer fb = { 0 }; 719 struct virtio_gpu_set_scanout_blob ss; 720 uint64_t fbend; 721 722 VIRTIO_GPU_FILL_CMD(ss); 723 virtio_gpu_scanout_blob_bswap(&ss); 724 trace_virtio_gpu_cmd_set_scanout_blob(ss.scanout_id, ss.resource_id, 725 ss.r.width, ss.r.height, ss.r.x, 726 ss.r.y); 727 728 if (ss.scanout_id >= g->parent_obj.conf.max_outputs) { 729 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d", 730 __func__, ss.scanout_id); 731 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID; 732 return; 733 } 734 735 if (ss.resource_id == 0) { 736 virtio_gpu_disable_scanout(g, ss.scanout_id); 737 return; 738 } 739 740 res = virtio_gpu_find_check_resource(g, ss.resource_id, true, 741 __func__, &cmd->error); 742 if (!res) { 743 return; 744 } 745 746 fb.format = virtio_gpu_get_pixman_format(ss.format); 747 if (!fb.format) { 748 qemu_log_mask(LOG_GUEST_ERROR, 749 "%s: host couldn't handle guest format %d\n", 750 __func__, ss.format); 751 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 752 return; 753 } 754 755 fb.bytes_pp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(fb.format), 8); 756 fb.width = ss.width; 757 fb.height = ss.height; 758 fb.stride = ss.strides[0]; 759 fb.offset = ss.offsets[0] + ss.r.x * fb.bytes_pp + ss.r.y * fb.stride; 760 761 fbend = fb.offset; 762 fbend += fb.stride * (ss.r.height - 1); 763 fbend += fb.bytes_pp * ss.r.width; 764 if (fbend > res->blob_size) { 765 qemu_log_mask(LOG_GUEST_ERROR, 766 "%s: fb end out of range\n", 767 __func__); 768 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 769 return; 770 } 771 772 virtio_gpu_do_set_scanout(g, ss.scanout_id, 773 &fb, res, &ss.r, &cmd->error); 774 } 775 776 int virtio_gpu_create_mapping_iov(VirtIOGPU *g, 777 uint32_t nr_entries, uint32_t offset, 778 struct virtio_gpu_ctrl_command *cmd, 779 uint64_t **addr, struct iovec **iov, 780 uint32_t *niov) 781 { 782 struct virtio_gpu_mem_entry *ents; 783 size_t esize, s; 784 int e, v; 785 786 if (nr_entries > 16384) { 787 qemu_log_mask(LOG_GUEST_ERROR, 788 "%s: nr_entries is too big (%d > 16384)\n", 789 __func__, nr_entries); 790 return -1; 791 } 792 793 esize = sizeof(*ents) * nr_entries; 794 ents = g_malloc(esize); 795 s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num, 796 offset, ents, esize); 797 if (s != esize) { 798 qemu_log_mask(LOG_GUEST_ERROR, 799 "%s: command data size incorrect %zu vs %zu\n", 800 __func__, s, esize); 801 g_free(ents); 802 return -1; 803 } 804 805 *iov = NULL; 806 if (addr) { 807 *addr = NULL; 808 } 809 for (e = 0, v = 0; e < nr_entries; e++) { 810 uint64_t a = le64_to_cpu(ents[e].addr); 811 uint32_t l = le32_to_cpu(ents[e].length); 812 hwaddr len; 813 void *map; 814 815 do { 816 len = l; 817 map = dma_memory_map(VIRTIO_DEVICE(g)->dma_as, 818 a, &len, DMA_DIRECTION_TO_DEVICE); 819 if (!map) { 820 qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to map MMIO memory for" 821 " element %d\n", __func__, e); 822 virtio_gpu_cleanup_mapping_iov(g, *iov, v); 823 g_free(ents); 824 *iov = NULL; 825 if (addr) { 826 g_free(*addr); 827 *addr = NULL; 828 } 829 return -1; 830 } 831 832 if (!(v % 16)) { 833 *iov = g_realloc(*iov, sizeof(struct iovec) * (v + 16)); 834 if (addr) { 835 *addr = g_realloc(*addr, sizeof(uint64_t) * (v + 16)); 836 } 837 } 838 (*iov)[v].iov_base = map; 839 (*iov)[v].iov_len = len; 840 if (addr) { 841 (*addr)[v] = a; 842 } 843 844 a += len; 845 l -= len; 846 v += 1; 847 } while (l > 0); 848 } 849 *niov = v; 850 851 g_free(ents); 852 return 0; 853 } 854 855 void virtio_gpu_cleanup_mapping_iov(VirtIOGPU *g, 856 struct iovec *iov, uint32_t count) 857 { 858 int i; 859 860 for (i = 0; i < count; i++) { 861 dma_memory_unmap(VIRTIO_DEVICE(g)->dma_as, 862 iov[i].iov_base, iov[i].iov_len, 863 DMA_DIRECTION_TO_DEVICE, 864 iov[i].iov_len); 865 } 866 g_free(iov); 867 } 868 869 static void virtio_gpu_cleanup_mapping(VirtIOGPU *g, 870 struct virtio_gpu_simple_resource *res) 871 { 872 virtio_gpu_cleanup_mapping_iov(g, res->iov, res->iov_cnt); 873 res->iov = NULL; 874 res->iov_cnt = 0; 875 g_free(res->addrs); 876 res->addrs = NULL; 877 878 if (res->blob) { 879 virtio_gpu_fini_udmabuf(res); 880 } 881 } 882 883 static void 884 virtio_gpu_resource_attach_backing(VirtIOGPU *g, 885 struct virtio_gpu_ctrl_command *cmd) 886 { 887 struct virtio_gpu_simple_resource *res; 888 struct virtio_gpu_resource_attach_backing ab; 889 int ret; 890 891 VIRTIO_GPU_FILL_CMD(ab); 892 virtio_gpu_bswap_32(&ab, sizeof(ab)); 893 trace_virtio_gpu_cmd_res_back_attach(ab.resource_id); 894 895 res = virtio_gpu_find_resource(g, ab.resource_id); 896 if (!res) { 897 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n", 898 __func__, ab.resource_id); 899 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 900 return; 901 } 902 903 if (res->iov) { 904 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; 905 return; 906 } 907 908 ret = virtio_gpu_create_mapping_iov(g, ab.nr_entries, sizeof(ab), cmd, 909 &res->addrs, &res->iov, &res->iov_cnt); 910 if (ret != 0) { 911 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; 912 return; 913 } 914 } 915 916 static void 917 virtio_gpu_resource_detach_backing(VirtIOGPU *g, 918 struct virtio_gpu_ctrl_command *cmd) 919 { 920 struct virtio_gpu_simple_resource *res; 921 struct virtio_gpu_resource_detach_backing detach; 922 923 VIRTIO_GPU_FILL_CMD(detach); 924 virtio_gpu_bswap_32(&detach, sizeof(detach)); 925 trace_virtio_gpu_cmd_res_back_detach(detach.resource_id); 926 927 res = virtio_gpu_find_check_resource(g, detach.resource_id, true, 928 __func__, &cmd->error); 929 if (!res) { 930 return; 931 } 932 virtio_gpu_cleanup_mapping(g, res); 933 } 934 935 void virtio_gpu_simple_process_cmd(VirtIOGPU *g, 936 struct virtio_gpu_ctrl_command *cmd) 937 { 938 VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr); 939 virtio_gpu_ctrl_hdr_bswap(&cmd->cmd_hdr); 940 941 switch (cmd->cmd_hdr.type) { 942 case VIRTIO_GPU_CMD_GET_DISPLAY_INFO: 943 virtio_gpu_get_display_info(g, cmd); 944 break; 945 case VIRTIO_GPU_CMD_GET_EDID: 946 virtio_gpu_get_edid(g, cmd); 947 break; 948 case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D: 949 virtio_gpu_resource_create_2d(g, cmd); 950 break; 951 case VIRTIO_GPU_CMD_RESOURCE_CREATE_BLOB: 952 if (!virtio_gpu_blob_enabled(g->parent_obj.conf)) { 953 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 954 break; 955 } 956 virtio_gpu_resource_create_blob(g, cmd); 957 break; 958 case VIRTIO_GPU_CMD_RESOURCE_UNREF: 959 virtio_gpu_resource_unref(g, cmd); 960 break; 961 case VIRTIO_GPU_CMD_RESOURCE_FLUSH: 962 virtio_gpu_resource_flush(g, cmd); 963 break; 964 case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D: 965 virtio_gpu_transfer_to_host_2d(g, cmd); 966 break; 967 case VIRTIO_GPU_CMD_SET_SCANOUT: 968 virtio_gpu_set_scanout(g, cmd); 969 break; 970 case VIRTIO_GPU_CMD_SET_SCANOUT_BLOB: 971 if (!virtio_gpu_blob_enabled(g->parent_obj.conf)) { 972 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 973 break; 974 } 975 virtio_gpu_set_scanout_blob(g, cmd); 976 break; 977 case VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING: 978 virtio_gpu_resource_attach_backing(g, cmd); 979 break; 980 case VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING: 981 virtio_gpu_resource_detach_backing(g, cmd); 982 break; 983 default: 984 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; 985 break; 986 } 987 if (!cmd->finished) { 988 virtio_gpu_ctrl_response_nodata(g, cmd, cmd->error ? cmd->error : 989 VIRTIO_GPU_RESP_OK_NODATA); 990 } 991 } 992 993 static void virtio_gpu_handle_ctrl_cb(VirtIODevice *vdev, VirtQueue *vq) 994 { 995 VirtIOGPU *g = VIRTIO_GPU(vdev); 996 qemu_bh_schedule(g->ctrl_bh); 997 } 998 999 static void virtio_gpu_handle_cursor_cb(VirtIODevice *vdev, VirtQueue *vq) 1000 { 1001 VirtIOGPU *g = VIRTIO_GPU(vdev); 1002 qemu_bh_schedule(g->cursor_bh); 1003 } 1004 1005 void virtio_gpu_process_cmdq(VirtIOGPU *g) 1006 { 1007 struct virtio_gpu_ctrl_command *cmd; 1008 VirtIOGPUClass *vgc = VIRTIO_GPU_GET_CLASS(g); 1009 1010 if (g->processing_cmdq) { 1011 return; 1012 } 1013 g->processing_cmdq = true; 1014 while (!QTAILQ_EMPTY(&g->cmdq)) { 1015 cmd = QTAILQ_FIRST(&g->cmdq); 1016 1017 if (g->parent_obj.renderer_blocked) { 1018 break; 1019 } 1020 1021 /* process command */ 1022 vgc->process_cmd(g, cmd); 1023 1024 QTAILQ_REMOVE(&g->cmdq, cmd, next); 1025 if (virtio_gpu_stats_enabled(g->parent_obj.conf)) { 1026 g->stats.requests++; 1027 } 1028 1029 if (!cmd->finished) { 1030 QTAILQ_INSERT_TAIL(&g->fenceq, cmd, next); 1031 g->inflight++; 1032 if (virtio_gpu_stats_enabled(g->parent_obj.conf)) { 1033 if (g->stats.max_inflight < g->inflight) { 1034 g->stats.max_inflight = g->inflight; 1035 } 1036 fprintf(stderr, "inflight: %3d (+)\r", g->inflight); 1037 } 1038 } else { 1039 g_free(cmd); 1040 } 1041 } 1042 g->processing_cmdq = false; 1043 } 1044 1045 static void virtio_gpu_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq) 1046 { 1047 VirtIOGPU *g = VIRTIO_GPU(vdev); 1048 struct virtio_gpu_ctrl_command *cmd; 1049 1050 if (!virtio_queue_ready(vq)) { 1051 return; 1052 } 1053 1054 cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command)); 1055 while (cmd) { 1056 cmd->vq = vq; 1057 cmd->error = 0; 1058 cmd->finished = false; 1059 QTAILQ_INSERT_TAIL(&g->cmdq, cmd, next); 1060 cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command)); 1061 } 1062 1063 virtio_gpu_process_cmdq(g); 1064 } 1065 1066 static void virtio_gpu_ctrl_bh(void *opaque) 1067 { 1068 VirtIOGPU *g = opaque; 1069 VirtIOGPUClass *vgc = VIRTIO_GPU_GET_CLASS(g); 1070 1071 vgc->handle_ctrl(&g->parent_obj.parent_obj, g->ctrl_vq); 1072 } 1073 1074 static void virtio_gpu_handle_cursor(VirtIODevice *vdev, VirtQueue *vq) 1075 { 1076 VirtIOGPU *g = VIRTIO_GPU(vdev); 1077 VirtQueueElement *elem; 1078 size_t s; 1079 struct virtio_gpu_update_cursor cursor_info; 1080 1081 if (!virtio_queue_ready(vq)) { 1082 return; 1083 } 1084 for (;;) { 1085 elem = virtqueue_pop(vq, sizeof(VirtQueueElement)); 1086 if (!elem) { 1087 break; 1088 } 1089 1090 s = iov_to_buf(elem->out_sg, elem->out_num, 0, 1091 &cursor_info, sizeof(cursor_info)); 1092 if (s != sizeof(cursor_info)) { 1093 qemu_log_mask(LOG_GUEST_ERROR, 1094 "%s: cursor size incorrect %zu vs %zu\n", 1095 __func__, s, sizeof(cursor_info)); 1096 } else { 1097 virtio_gpu_bswap_32(&cursor_info, sizeof(cursor_info)); 1098 update_cursor(g, &cursor_info); 1099 } 1100 virtqueue_push(vq, elem, 0); 1101 virtio_notify(vdev, vq); 1102 g_free(elem); 1103 } 1104 } 1105 1106 static void virtio_gpu_cursor_bh(void *opaque) 1107 { 1108 VirtIOGPU *g = opaque; 1109 virtio_gpu_handle_cursor(&g->parent_obj.parent_obj, g->cursor_vq); 1110 } 1111 1112 static const VMStateDescription vmstate_virtio_gpu_scanout = { 1113 .name = "virtio-gpu-one-scanout", 1114 .version_id = 1, 1115 .fields = (VMStateField[]) { 1116 VMSTATE_UINT32(resource_id, struct virtio_gpu_scanout), 1117 VMSTATE_UINT32(width, struct virtio_gpu_scanout), 1118 VMSTATE_UINT32(height, struct virtio_gpu_scanout), 1119 VMSTATE_INT32(x, struct virtio_gpu_scanout), 1120 VMSTATE_INT32(y, struct virtio_gpu_scanout), 1121 VMSTATE_UINT32(cursor.resource_id, struct virtio_gpu_scanout), 1122 VMSTATE_UINT32(cursor.hot_x, struct virtio_gpu_scanout), 1123 VMSTATE_UINT32(cursor.hot_y, struct virtio_gpu_scanout), 1124 VMSTATE_UINT32(cursor.pos.x, struct virtio_gpu_scanout), 1125 VMSTATE_UINT32(cursor.pos.y, struct virtio_gpu_scanout), 1126 VMSTATE_END_OF_LIST() 1127 }, 1128 }; 1129 1130 static const VMStateDescription vmstate_virtio_gpu_scanouts = { 1131 .name = "virtio-gpu-scanouts", 1132 .version_id = 1, 1133 .fields = (VMStateField[]) { 1134 VMSTATE_INT32(parent_obj.enable, struct VirtIOGPU), 1135 VMSTATE_UINT32_EQUAL(parent_obj.conf.max_outputs, 1136 struct VirtIOGPU, NULL), 1137 VMSTATE_STRUCT_VARRAY_UINT32(parent_obj.scanout, struct VirtIOGPU, 1138 parent_obj.conf.max_outputs, 1, 1139 vmstate_virtio_gpu_scanout, 1140 struct virtio_gpu_scanout), 1141 VMSTATE_END_OF_LIST() 1142 }, 1143 }; 1144 1145 static int virtio_gpu_save(QEMUFile *f, void *opaque, size_t size, 1146 const VMStateField *field, JSONWriter *vmdesc) 1147 { 1148 VirtIOGPU *g = opaque; 1149 struct virtio_gpu_simple_resource *res; 1150 int i; 1151 1152 /* in 2d mode we should never find unprocessed commands here */ 1153 assert(QTAILQ_EMPTY(&g->cmdq)); 1154 1155 QTAILQ_FOREACH(res, &g->reslist, next) { 1156 qemu_put_be32(f, res->resource_id); 1157 qemu_put_be32(f, res->width); 1158 qemu_put_be32(f, res->height); 1159 qemu_put_be32(f, res->format); 1160 qemu_put_be32(f, res->iov_cnt); 1161 for (i = 0; i < res->iov_cnt; i++) { 1162 qemu_put_be64(f, res->addrs[i]); 1163 qemu_put_be32(f, res->iov[i].iov_len); 1164 } 1165 qemu_put_buffer(f, (void *)pixman_image_get_data(res->image), 1166 pixman_image_get_stride(res->image) * res->height); 1167 } 1168 qemu_put_be32(f, 0); /* end of list */ 1169 1170 return vmstate_save_state(f, &vmstate_virtio_gpu_scanouts, g, NULL); 1171 } 1172 1173 static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size, 1174 const VMStateField *field) 1175 { 1176 VirtIOGPU *g = opaque; 1177 struct virtio_gpu_simple_resource *res; 1178 struct virtio_gpu_scanout *scanout; 1179 uint32_t resource_id, pformat; 1180 int i; 1181 1182 g->hostmem = 0; 1183 1184 resource_id = qemu_get_be32(f); 1185 while (resource_id != 0) { 1186 res = virtio_gpu_find_resource(g, resource_id); 1187 if (res) { 1188 return -EINVAL; 1189 } 1190 1191 res = g_new0(struct virtio_gpu_simple_resource, 1); 1192 res->resource_id = resource_id; 1193 res->width = qemu_get_be32(f); 1194 res->height = qemu_get_be32(f); 1195 res->format = qemu_get_be32(f); 1196 res->iov_cnt = qemu_get_be32(f); 1197 1198 /* allocate */ 1199 pformat = virtio_gpu_get_pixman_format(res->format); 1200 if (!pformat) { 1201 g_free(res); 1202 return -EINVAL; 1203 } 1204 res->image = pixman_image_create_bits(pformat, 1205 res->width, res->height, 1206 NULL, 0); 1207 if (!res->image) { 1208 g_free(res); 1209 return -EINVAL; 1210 } 1211 1212 res->hostmem = calc_image_hostmem(pformat, res->width, res->height); 1213 1214 res->addrs = g_new(uint64_t, res->iov_cnt); 1215 res->iov = g_new(struct iovec, res->iov_cnt); 1216 1217 /* read data */ 1218 for (i = 0; i < res->iov_cnt; i++) { 1219 res->addrs[i] = qemu_get_be64(f); 1220 res->iov[i].iov_len = qemu_get_be32(f); 1221 } 1222 qemu_get_buffer(f, (void *)pixman_image_get_data(res->image), 1223 pixman_image_get_stride(res->image) * res->height); 1224 1225 /* restore mapping */ 1226 for (i = 0; i < res->iov_cnt; i++) { 1227 hwaddr len = res->iov[i].iov_len; 1228 res->iov[i].iov_base = 1229 dma_memory_map(VIRTIO_DEVICE(g)->dma_as, 1230 res->addrs[i], &len, DMA_DIRECTION_TO_DEVICE); 1231 1232 if (!res->iov[i].iov_base || len != res->iov[i].iov_len) { 1233 /* Clean up the half-a-mapping we just created... */ 1234 if (res->iov[i].iov_base) { 1235 dma_memory_unmap(VIRTIO_DEVICE(g)->dma_as, 1236 res->iov[i].iov_base, 1237 len, 1238 DMA_DIRECTION_TO_DEVICE, 1239 0); 1240 } 1241 /* ...and the mappings for previous loop iterations */ 1242 res->iov_cnt = i; 1243 virtio_gpu_cleanup_mapping(g, res); 1244 pixman_image_unref(res->image); 1245 g_free(res); 1246 return -EINVAL; 1247 } 1248 } 1249 1250 QTAILQ_INSERT_HEAD(&g->reslist, res, next); 1251 g->hostmem += res->hostmem; 1252 1253 resource_id = qemu_get_be32(f); 1254 } 1255 1256 /* load & apply scanout state */ 1257 vmstate_load_state(f, &vmstate_virtio_gpu_scanouts, g, 1); 1258 for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { 1259 scanout = &g->parent_obj.scanout[i]; 1260 if (!scanout->resource_id) { 1261 continue; 1262 } 1263 res = virtio_gpu_find_resource(g, scanout->resource_id); 1264 if (!res) { 1265 return -EINVAL; 1266 } 1267 scanout->ds = qemu_create_displaysurface_pixman(res->image); 1268 if (!scanout->ds) { 1269 return -EINVAL; 1270 } 1271 1272 dpy_gfx_replace_surface(scanout->con, scanout->ds); 1273 dpy_gfx_update_full(scanout->con); 1274 if (scanout->cursor.resource_id) { 1275 update_cursor(g, &scanout->cursor); 1276 } 1277 res->scanout_bitmask |= (1 << i); 1278 } 1279 1280 return 0; 1281 } 1282 1283 void virtio_gpu_device_realize(DeviceState *qdev, Error **errp) 1284 { 1285 VirtIODevice *vdev = VIRTIO_DEVICE(qdev); 1286 VirtIOGPU *g = VIRTIO_GPU(qdev); 1287 1288 if (virtio_gpu_blob_enabled(g->parent_obj.conf)) { 1289 if (!virtio_gpu_have_udmabuf()) { 1290 error_setg(errp, "cannot enable blob resources without udmabuf"); 1291 return; 1292 } 1293 1294 if (virtio_gpu_virgl_enabled(g->parent_obj.conf)) { 1295 error_setg(errp, "blobs and virgl are not compatible (yet)"); 1296 return; 1297 } 1298 } 1299 1300 if (!virtio_gpu_base_device_realize(qdev, 1301 virtio_gpu_handle_ctrl_cb, 1302 virtio_gpu_handle_cursor_cb, 1303 errp)) { 1304 return; 1305 } 1306 1307 g->ctrl_vq = virtio_get_queue(vdev, 0); 1308 g->cursor_vq = virtio_get_queue(vdev, 1); 1309 g->ctrl_bh = qemu_bh_new(virtio_gpu_ctrl_bh, g); 1310 g->cursor_bh = qemu_bh_new(virtio_gpu_cursor_bh, g); 1311 QTAILQ_INIT(&g->reslist); 1312 QTAILQ_INIT(&g->cmdq); 1313 QTAILQ_INIT(&g->fenceq); 1314 } 1315 1316 void virtio_gpu_reset(VirtIODevice *vdev) 1317 { 1318 VirtIOGPU *g = VIRTIO_GPU(vdev); 1319 struct virtio_gpu_simple_resource *res, *tmp; 1320 struct virtio_gpu_ctrl_command *cmd; 1321 1322 QTAILQ_FOREACH_SAFE(res, &g->reslist, next, tmp) { 1323 virtio_gpu_resource_destroy(g, res); 1324 } 1325 1326 while (!QTAILQ_EMPTY(&g->cmdq)) { 1327 cmd = QTAILQ_FIRST(&g->cmdq); 1328 QTAILQ_REMOVE(&g->cmdq, cmd, next); 1329 g_free(cmd); 1330 } 1331 1332 while (!QTAILQ_EMPTY(&g->fenceq)) { 1333 cmd = QTAILQ_FIRST(&g->fenceq); 1334 QTAILQ_REMOVE(&g->fenceq, cmd, next); 1335 g->inflight--; 1336 g_free(cmd); 1337 } 1338 1339 virtio_gpu_base_reset(VIRTIO_GPU_BASE(vdev)); 1340 } 1341 1342 static void 1343 virtio_gpu_get_config(VirtIODevice *vdev, uint8_t *config) 1344 { 1345 VirtIOGPUBase *g = VIRTIO_GPU_BASE(vdev); 1346 1347 memcpy(config, &g->virtio_config, sizeof(g->virtio_config)); 1348 } 1349 1350 static void 1351 virtio_gpu_set_config(VirtIODevice *vdev, const uint8_t *config) 1352 { 1353 VirtIOGPUBase *g = VIRTIO_GPU_BASE(vdev); 1354 const struct virtio_gpu_config *vgconfig = 1355 (const struct virtio_gpu_config *)config; 1356 1357 if (vgconfig->events_clear) { 1358 g->virtio_config.events_read &= ~vgconfig->events_clear; 1359 } 1360 } 1361 1362 /* 1363 * For historical reasons virtio_gpu does not adhere to virtio migration 1364 * scheme as described in doc/virtio-migration.txt, in a sense that no 1365 * save/load callback are provided to the core. Instead the device data 1366 * is saved/loaded after the core data. 1367 * 1368 * Because of this we need a special vmsd. 1369 */ 1370 static const VMStateDescription vmstate_virtio_gpu = { 1371 .name = "virtio-gpu", 1372 .minimum_version_id = VIRTIO_GPU_VM_VERSION, 1373 .version_id = VIRTIO_GPU_VM_VERSION, 1374 .fields = (VMStateField[]) { 1375 VMSTATE_VIRTIO_DEVICE /* core */, 1376 { 1377 .name = "virtio-gpu", 1378 .info = &(const VMStateInfo) { 1379 .name = "virtio-gpu", 1380 .get = virtio_gpu_load, 1381 .put = virtio_gpu_save, 1382 }, 1383 .flags = VMS_SINGLE, 1384 } /* device */, 1385 VMSTATE_END_OF_LIST() 1386 }, 1387 }; 1388 1389 static Property virtio_gpu_properties[] = { 1390 VIRTIO_GPU_BASE_PROPERTIES(VirtIOGPU, parent_obj.conf), 1391 DEFINE_PROP_SIZE("max_hostmem", VirtIOGPU, conf_max_hostmem, 1392 256 * MiB), 1393 DEFINE_PROP_BIT("blob", VirtIOGPU, parent_obj.conf.flags, 1394 VIRTIO_GPU_FLAG_BLOB_ENABLED, false), 1395 DEFINE_PROP_END_OF_LIST(), 1396 }; 1397 1398 static void virtio_gpu_class_init(ObjectClass *klass, void *data) 1399 { 1400 DeviceClass *dc = DEVICE_CLASS(klass); 1401 VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); 1402 VirtIOGPUClass *vgc = VIRTIO_GPU_CLASS(klass); 1403 1404 vgc->handle_ctrl = virtio_gpu_handle_ctrl; 1405 vgc->process_cmd = virtio_gpu_simple_process_cmd; 1406 vgc->update_cursor_data = virtio_gpu_update_cursor_data; 1407 1408 vdc->realize = virtio_gpu_device_realize; 1409 vdc->reset = virtio_gpu_reset; 1410 vdc->get_config = virtio_gpu_get_config; 1411 vdc->set_config = virtio_gpu_set_config; 1412 1413 dc->vmsd = &vmstate_virtio_gpu; 1414 device_class_set_props(dc, virtio_gpu_properties); 1415 } 1416 1417 static const TypeInfo virtio_gpu_info = { 1418 .name = TYPE_VIRTIO_GPU, 1419 .parent = TYPE_VIRTIO_GPU_BASE, 1420 .instance_size = sizeof(VirtIOGPU), 1421 .class_size = sizeof(VirtIOGPUClass), 1422 .class_init = virtio_gpu_class_init, 1423 }; 1424 module_obj(TYPE_VIRTIO_GPU); 1425 1426 static void virtio_register_types(void) 1427 { 1428 type_register_static(&virtio_gpu_info); 1429 } 1430 1431 type_init(virtio_register_types) 1432