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 res = virtio_gpu_find_resource(g, cblob.resource_id); 344 if (res) { 345 qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already exists %d\n", 346 __func__, cblob.resource_id); 347 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 348 return; 349 } 350 351 res = g_new0(struct virtio_gpu_simple_resource, 1); 352 res->resource_id = cblob.resource_id; 353 res->blob_size = cblob.size; 354 355 if (cblob.blob_mem != VIRTIO_GPU_BLOB_MEM_GUEST && 356 cblob.blob_flags != VIRTIO_GPU_BLOB_FLAG_USE_SHAREABLE) { 357 qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid memory type\n", 358 __func__); 359 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 360 g_free(res); 361 return; 362 } 363 364 if (res->iov) { 365 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; 366 return; 367 } 368 369 ret = virtio_gpu_create_mapping_iov(g, cblob.nr_entries, sizeof(cblob), 370 cmd, &res->addrs, &res->iov, 371 &res->iov_cnt); 372 if (ret != 0) { 373 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; 374 return; 375 } 376 377 virtio_gpu_init_udmabuf(res); 378 QTAILQ_INSERT_HEAD(&g->reslist, res, next); 379 } 380 381 static void virtio_gpu_disable_scanout(VirtIOGPU *g, int scanout_id) 382 { 383 struct virtio_gpu_scanout *scanout = &g->parent_obj.scanout[scanout_id]; 384 struct virtio_gpu_simple_resource *res; 385 386 if (scanout->resource_id == 0) { 387 return; 388 } 389 390 res = virtio_gpu_find_resource(g, scanout->resource_id); 391 if (res) { 392 res->scanout_bitmask &= ~(1 << scanout_id); 393 } 394 395 dpy_gfx_replace_surface(scanout->con, NULL); 396 scanout->resource_id = 0; 397 scanout->ds = NULL; 398 scanout->width = 0; 399 scanout->height = 0; 400 } 401 402 static void virtio_gpu_resource_destroy(VirtIOGPU *g, 403 struct virtio_gpu_simple_resource *res) 404 { 405 int i; 406 407 if (res->scanout_bitmask) { 408 for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { 409 if (res->scanout_bitmask & (1 << i)) { 410 virtio_gpu_disable_scanout(g, i); 411 } 412 } 413 } 414 415 qemu_pixman_image_unref(res->image); 416 virtio_gpu_cleanup_mapping(g, res); 417 QTAILQ_REMOVE(&g->reslist, res, next); 418 g->hostmem -= res->hostmem; 419 g_free(res); 420 } 421 422 static void virtio_gpu_resource_unref(VirtIOGPU *g, 423 struct virtio_gpu_ctrl_command *cmd) 424 { 425 struct virtio_gpu_simple_resource *res; 426 struct virtio_gpu_resource_unref unref; 427 428 VIRTIO_GPU_FILL_CMD(unref); 429 virtio_gpu_bswap_32(&unref, sizeof(unref)); 430 trace_virtio_gpu_cmd_res_unref(unref.resource_id); 431 432 res = virtio_gpu_find_resource(g, unref.resource_id); 433 if (!res) { 434 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n", 435 __func__, unref.resource_id); 436 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 437 return; 438 } 439 virtio_gpu_resource_destroy(g, res); 440 } 441 442 static void virtio_gpu_transfer_to_host_2d(VirtIOGPU *g, 443 struct virtio_gpu_ctrl_command *cmd) 444 { 445 struct virtio_gpu_simple_resource *res; 446 int h; 447 uint32_t src_offset, dst_offset, stride; 448 int bpp; 449 pixman_format_code_t format; 450 struct virtio_gpu_transfer_to_host_2d t2d; 451 452 VIRTIO_GPU_FILL_CMD(t2d); 453 virtio_gpu_t2d_bswap(&t2d); 454 trace_virtio_gpu_cmd_res_xfer_toh_2d(t2d.resource_id); 455 456 res = virtio_gpu_find_check_resource(g, t2d.resource_id, true, 457 __func__, &cmd->error); 458 if (!res || res->blob) { 459 return; 460 } 461 462 if (t2d.r.x > res->width || 463 t2d.r.y > res->height || 464 t2d.r.width > res->width || 465 t2d.r.height > res->height || 466 t2d.r.x + t2d.r.width > res->width || 467 t2d.r.y + t2d.r.height > res->height) { 468 qemu_log_mask(LOG_GUEST_ERROR, "%s: transfer bounds outside resource" 469 " bounds for resource %d: %d %d %d %d vs %d %d\n", 470 __func__, t2d.resource_id, t2d.r.x, t2d.r.y, 471 t2d.r.width, t2d.r.height, res->width, res->height); 472 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 473 return; 474 } 475 476 format = pixman_image_get_format(res->image); 477 bpp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(format), 8); 478 stride = pixman_image_get_stride(res->image); 479 480 if (t2d.offset || t2d.r.x || t2d.r.y || 481 t2d.r.width != pixman_image_get_width(res->image)) { 482 void *img_data = pixman_image_get_data(res->image); 483 for (h = 0; h < t2d.r.height; h++) { 484 src_offset = t2d.offset + stride * h; 485 dst_offset = (t2d.r.y + h) * stride + (t2d.r.x * bpp); 486 487 iov_to_buf(res->iov, res->iov_cnt, src_offset, 488 (uint8_t *)img_data 489 + dst_offset, t2d.r.width * bpp); 490 } 491 } else { 492 iov_to_buf(res->iov, res->iov_cnt, 0, 493 pixman_image_get_data(res->image), 494 pixman_image_get_stride(res->image) 495 * pixman_image_get_height(res->image)); 496 } 497 } 498 499 static void virtio_gpu_resource_flush(VirtIOGPU *g, 500 struct virtio_gpu_ctrl_command *cmd) 501 { 502 struct virtio_gpu_simple_resource *res; 503 struct virtio_gpu_resource_flush rf; 504 struct virtio_gpu_scanout *scanout; 505 pixman_region16_t flush_region; 506 int i; 507 508 VIRTIO_GPU_FILL_CMD(rf); 509 virtio_gpu_bswap_32(&rf, sizeof(rf)); 510 trace_virtio_gpu_cmd_res_flush(rf.resource_id, 511 rf.r.width, rf.r.height, rf.r.x, rf.r.y); 512 513 res = virtio_gpu_find_check_resource(g, rf.resource_id, false, 514 __func__, &cmd->error); 515 if (!res) { 516 return; 517 } 518 519 if (res->blob) { 520 for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { 521 scanout = &g->parent_obj.scanout[i]; 522 if (scanout->resource_id == res->resource_id && 523 console_has_gl(scanout->con)) { 524 dpy_gl_update(scanout->con, 0, 0, scanout->width, 525 scanout->height); 526 return; 527 } 528 } 529 } 530 531 if (!res->blob && 532 (rf.r.x > res->width || 533 rf.r.y > res->height || 534 rf.r.width > res->width || 535 rf.r.height > res->height || 536 rf.r.x + rf.r.width > res->width || 537 rf.r.y + rf.r.height > res->height)) { 538 qemu_log_mask(LOG_GUEST_ERROR, "%s: flush bounds outside resource" 539 " bounds for resource %d: %d %d %d %d vs %d %d\n", 540 __func__, rf.resource_id, rf.r.x, rf.r.y, 541 rf.r.width, rf.r.height, res->width, res->height); 542 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 543 return; 544 } 545 546 pixman_region_init_rect(&flush_region, 547 rf.r.x, rf.r.y, rf.r.width, rf.r.height); 548 for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { 549 pixman_region16_t region, finalregion; 550 pixman_box16_t *extents; 551 552 if (!(res->scanout_bitmask & (1 << i))) { 553 continue; 554 } 555 scanout = &g->parent_obj.scanout[i]; 556 557 pixman_region_init(&finalregion); 558 pixman_region_init_rect(®ion, scanout->x, scanout->y, 559 scanout->width, scanout->height); 560 561 pixman_region_intersect(&finalregion, &flush_region, ®ion); 562 pixman_region_translate(&finalregion, -scanout->x, -scanout->y); 563 extents = pixman_region_extents(&finalregion); 564 /* work out the area we need to update for each console */ 565 dpy_gfx_update(g->parent_obj.scanout[i].con, 566 extents->x1, extents->y1, 567 extents->x2 - extents->x1, 568 extents->y2 - extents->y1); 569 570 pixman_region_fini(®ion); 571 pixman_region_fini(&finalregion); 572 } 573 pixman_region_fini(&flush_region); 574 } 575 576 static void virtio_unref_resource(pixman_image_t *image, void *data) 577 { 578 pixman_image_unref(data); 579 } 580 581 static void virtio_gpu_update_scanout(VirtIOGPU *g, 582 uint32_t scanout_id, 583 struct virtio_gpu_simple_resource *res, 584 struct virtio_gpu_rect *r) 585 { 586 struct virtio_gpu_simple_resource *ores; 587 struct virtio_gpu_scanout *scanout; 588 589 scanout = &g->parent_obj.scanout[scanout_id]; 590 ores = virtio_gpu_find_resource(g, scanout->resource_id); 591 if (ores) { 592 ores->scanout_bitmask &= ~(1 << scanout_id); 593 } 594 595 res->scanout_bitmask |= (1 << scanout_id); 596 scanout->resource_id = res->resource_id; 597 scanout->x = r->x; 598 scanout->y = r->y; 599 scanout->width = r->width; 600 scanout->height = r->height; 601 } 602 603 static void virtio_gpu_do_set_scanout(VirtIOGPU *g, 604 uint32_t scanout_id, 605 struct virtio_gpu_framebuffer *fb, 606 struct virtio_gpu_simple_resource *res, 607 struct virtio_gpu_rect *r, 608 uint32_t *error) 609 { 610 struct virtio_gpu_scanout *scanout; 611 uint8_t *data; 612 613 scanout = &g->parent_obj.scanout[scanout_id]; 614 615 if (r->x > fb->width || 616 r->y > fb->height || 617 r->width < 16 || 618 r->height < 16 || 619 r->width > fb->width || 620 r->height > fb->height || 621 r->x + r->width > fb->width || 622 r->y + r->height > fb->height) { 623 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout %d bounds for" 624 " resource %d, rect (%d,%d)+%d,%d, fb %d %d\n", 625 __func__, scanout_id, res->resource_id, 626 r->x, r->y, r->width, r->height, 627 fb->width, fb->height); 628 *error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 629 return; 630 } 631 632 g->parent_obj.enable = 1; 633 634 if (res->blob) { 635 if (console_has_gl(scanout->con)) { 636 if (!virtio_gpu_update_dmabuf(g, scanout_id, res, fb)) { 637 virtio_gpu_update_scanout(g, scanout_id, res, r); 638 return; 639 } 640 } 641 642 data = res->blob; 643 } else { 644 data = (uint8_t *)pixman_image_get_data(res->image); 645 } 646 647 /* create a surface for this scanout */ 648 if ((res->blob && !console_has_gl(scanout->con)) || 649 !scanout->ds || 650 surface_data(scanout->ds) != data + fb->offset || 651 scanout->width != r->width || 652 scanout->height != r->height) { 653 pixman_image_t *rect; 654 void *ptr = data + fb->offset; 655 rect = pixman_image_create_bits(fb->format, r->width, r->height, 656 ptr, fb->stride); 657 658 if (res->image) { 659 pixman_image_ref(res->image); 660 pixman_image_set_destroy_function(rect, virtio_unref_resource, 661 res->image); 662 } 663 664 /* realloc the surface ptr */ 665 scanout->ds = qemu_create_displaysurface_pixman(rect); 666 if (!scanout->ds) { 667 *error = VIRTIO_GPU_RESP_ERR_UNSPEC; 668 return; 669 } 670 671 pixman_image_unref(rect); 672 dpy_gfx_replace_surface(g->parent_obj.scanout[scanout_id].con, 673 scanout->ds); 674 } 675 676 virtio_gpu_update_scanout(g, scanout_id, res, r); 677 } 678 679 static void virtio_gpu_set_scanout(VirtIOGPU *g, 680 struct virtio_gpu_ctrl_command *cmd) 681 { 682 struct virtio_gpu_simple_resource *res; 683 struct virtio_gpu_framebuffer fb = { 0 }; 684 struct virtio_gpu_set_scanout ss; 685 686 VIRTIO_GPU_FILL_CMD(ss); 687 virtio_gpu_bswap_32(&ss, sizeof(ss)); 688 trace_virtio_gpu_cmd_set_scanout(ss.scanout_id, ss.resource_id, 689 ss.r.width, ss.r.height, ss.r.x, ss.r.y); 690 691 if (ss.scanout_id >= g->parent_obj.conf.max_outputs) { 692 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d", 693 __func__, ss.scanout_id); 694 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID; 695 return; 696 } 697 698 if (ss.resource_id == 0) { 699 virtio_gpu_disable_scanout(g, ss.scanout_id); 700 return; 701 } 702 703 res = virtio_gpu_find_check_resource(g, ss.resource_id, true, 704 __func__, &cmd->error); 705 if (!res) { 706 return; 707 } 708 709 fb.format = pixman_image_get_format(res->image); 710 fb.bytes_pp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(fb.format), 8); 711 fb.width = pixman_image_get_width(res->image); 712 fb.height = pixman_image_get_height(res->image); 713 fb.stride = pixman_image_get_stride(res->image); 714 fb.offset = ss.r.x * fb.bytes_pp + ss.r.y * fb.stride; 715 716 virtio_gpu_do_set_scanout(g, ss.scanout_id, 717 &fb, res, &ss.r, &cmd->error); 718 } 719 720 static void virtio_gpu_set_scanout_blob(VirtIOGPU *g, 721 struct virtio_gpu_ctrl_command *cmd) 722 { 723 struct virtio_gpu_simple_resource *res; 724 struct virtio_gpu_framebuffer fb = { 0 }; 725 struct virtio_gpu_set_scanout_blob ss; 726 uint64_t fbend; 727 728 VIRTIO_GPU_FILL_CMD(ss); 729 virtio_gpu_scanout_blob_bswap(&ss); 730 trace_virtio_gpu_cmd_set_scanout_blob(ss.scanout_id, ss.resource_id, 731 ss.r.width, ss.r.height, ss.r.x, 732 ss.r.y); 733 734 if (ss.scanout_id >= g->parent_obj.conf.max_outputs) { 735 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d", 736 __func__, ss.scanout_id); 737 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID; 738 return; 739 } 740 741 if (ss.resource_id == 0) { 742 virtio_gpu_disable_scanout(g, ss.scanout_id); 743 return; 744 } 745 746 res = virtio_gpu_find_check_resource(g, ss.resource_id, true, 747 __func__, &cmd->error); 748 if (!res) { 749 return; 750 } 751 752 fb.format = virtio_gpu_get_pixman_format(ss.format); 753 if (!fb.format) { 754 qemu_log_mask(LOG_GUEST_ERROR, 755 "%s: host couldn't handle guest format %d\n", 756 __func__, ss.format); 757 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 758 return; 759 } 760 761 fb.bytes_pp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(fb.format), 8); 762 fb.width = ss.width; 763 fb.height = ss.height; 764 fb.stride = ss.strides[0]; 765 fb.offset = ss.offsets[0] + ss.r.x * fb.bytes_pp + ss.r.y * fb.stride; 766 767 fbend = fb.offset; 768 fbend += fb.stride * (ss.r.height - 1); 769 fbend += fb.bytes_pp * ss.r.width; 770 if (fbend > res->blob_size) { 771 qemu_log_mask(LOG_GUEST_ERROR, 772 "%s: fb end out of range\n", 773 __func__); 774 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 775 return; 776 } 777 778 virtio_gpu_do_set_scanout(g, ss.scanout_id, 779 &fb, res, &ss.r, &cmd->error); 780 } 781 782 int virtio_gpu_create_mapping_iov(VirtIOGPU *g, 783 uint32_t nr_entries, uint32_t offset, 784 struct virtio_gpu_ctrl_command *cmd, 785 uint64_t **addr, struct iovec **iov, 786 uint32_t *niov) 787 { 788 struct virtio_gpu_mem_entry *ents; 789 size_t esize, s; 790 int e, v; 791 792 if (nr_entries > 16384) { 793 qemu_log_mask(LOG_GUEST_ERROR, 794 "%s: nr_entries is too big (%d > 16384)\n", 795 __func__, nr_entries); 796 return -1; 797 } 798 799 esize = sizeof(*ents) * nr_entries; 800 ents = g_malloc(esize); 801 s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num, 802 offset, ents, esize); 803 if (s != esize) { 804 qemu_log_mask(LOG_GUEST_ERROR, 805 "%s: command data size incorrect %zu vs %zu\n", 806 __func__, s, esize); 807 g_free(ents); 808 return -1; 809 } 810 811 *iov = NULL; 812 if (addr) { 813 *addr = NULL; 814 } 815 for (e = 0, v = 0; e < nr_entries; e++) { 816 uint64_t a = le64_to_cpu(ents[e].addr); 817 uint32_t l = le32_to_cpu(ents[e].length); 818 hwaddr len; 819 void *map; 820 821 do { 822 len = l; 823 map = dma_memory_map(VIRTIO_DEVICE(g)->dma_as, 824 a, &len, DMA_DIRECTION_TO_DEVICE); 825 if (!map) { 826 qemu_log_mask(LOG_GUEST_ERROR, "%s: failed to map MMIO memory for" 827 " element %d\n", __func__, e); 828 virtio_gpu_cleanup_mapping_iov(g, *iov, v); 829 g_free(ents); 830 *iov = NULL; 831 if (addr) { 832 g_free(*addr); 833 *addr = NULL; 834 } 835 return -1; 836 } 837 838 if (!(v % 16)) { 839 *iov = g_realloc(*iov, sizeof(struct iovec) * (v + 16)); 840 if (addr) { 841 *addr = g_realloc(*addr, sizeof(uint64_t) * (v + 16)); 842 } 843 } 844 (*iov)[v].iov_base = map; 845 (*iov)[v].iov_len = len; 846 if (addr) { 847 (*addr)[v] = a; 848 } 849 850 a += len; 851 l -= len; 852 v += 1; 853 } while (l > 0); 854 } 855 *niov = v; 856 857 g_free(ents); 858 return 0; 859 } 860 861 void virtio_gpu_cleanup_mapping_iov(VirtIOGPU *g, 862 struct iovec *iov, uint32_t count) 863 { 864 int i; 865 866 for (i = 0; i < count; i++) { 867 dma_memory_unmap(VIRTIO_DEVICE(g)->dma_as, 868 iov[i].iov_base, iov[i].iov_len, 869 DMA_DIRECTION_TO_DEVICE, 870 iov[i].iov_len); 871 } 872 g_free(iov); 873 } 874 875 static void virtio_gpu_cleanup_mapping(VirtIOGPU *g, 876 struct virtio_gpu_simple_resource *res) 877 { 878 virtio_gpu_cleanup_mapping_iov(g, res->iov, res->iov_cnt); 879 res->iov = NULL; 880 res->iov_cnt = 0; 881 g_free(res->addrs); 882 res->addrs = NULL; 883 884 if (res->blob) { 885 virtio_gpu_fini_udmabuf(res); 886 } 887 } 888 889 static void 890 virtio_gpu_resource_attach_backing(VirtIOGPU *g, 891 struct virtio_gpu_ctrl_command *cmd) 892 { 893 struct virtio_gpu_simple_resource *res; 894 struct virtio_gpu_resource_attach_backing ab; 895 int ret; 896 897 VIRTIO_GPU_FILL_CMD(ab); 898 virtio_gpu_bswap_32(&ab, sizeof(ab)); 899 trace_virtio_gpu_cmd_res_back_attach(ab.resource_id); 900 901 res = virtio_gpu_find_resource(g, ab.resource_id); 902 if (!res) { 903 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n", 904 __func__, ab.resource_id); 905 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 906 return; 907 } 908 909 if (res->iov) { 910 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; 911 return; 912 } 913 914 ret = virtio_gpu_create_mapping_iov(g, ab.nr_entries, sizeof(ab), cmd, 915 &res->addrs, &res->iov, &res->iov_cnt); 916 if (ret != 0) { 917 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; 918 return; 919 } 920 } 921 922 static void 923 virtio_gpu_resource_detach_backing(VirtIOGPU *g, 924 struct virtio_gpu_ctrl_command *cmd) 925 { 926 struct virtio_gpu_simple_resource *res; 927 struct virtio_gpu_resource_detach_backing detach; 928 929 VIRTIO_GPU_FILL_CMD(detach); 930 virtio_gpu_bswap_32(&detach, sizeof(detach)); 931 trace_virtio_gpu_cmd_res_back_detach(detach.resource_id); 932 933 res = virtio_gpu_find_check_resource(g, detach.resource_id, true, 934 __func__, &cmd->error); 935 if (!res) { 936 return; 937 } 938 virtio_gpu_cleanup_mapping(g, res); 939 } 940 941 void virtio_gpu_simple_process_cmd(VirtIOGPU *g, 942 struct virtio_gpu_ctrl_command *cmd) 943 { 944 VIRTIO_GPU_FILL_CMD(cmd->cmd_hdr); 945 virtio_gpu_ctrl_hdr_bswap(&cmd->cmd_hdr); 946 947 switch (cmd->cmd_hdr.type) { 948 case VIRTIO_GPU_CMD_GET_DISPLAY_INFO: 949 virtio_gpu_get_display_info(g, cmd); 950 break; 951 case VIRTIO_GPU_CMD_GET_EDID: 952 virtio_gpu_get_edid(g, cmd); 953 break; 954 case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D: 955 virtio_gpu_resource_create_2d(g, cmd); 956 break; 957 case VIRTIO_GPU_CMD_RESOURCE_CREATE_BLOB: 958 if (!virtio_gpu_blob_enabled(g->parent_obj.conf)) { 959 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 960 break; 961 } 962 virtio_gpu_resource_create_blob(g, cmd); 963 break; 964 case VIRTIO_GPU_CMD_RESOURCE_UNREF: 965 virtio_gpu_resource_unref(g, cmd); 966 break; 967 case VIRTIO_GPU_CMD_RESOURCE_FLUSH: 968 virtio_gpu_resource_flush(g, cmd); 969 break; 970 case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D: 971 virtio_gpu_transfer_to_host_2d(g, cmd); 972 break; 973 case VIRTIO_GPU_CMD_SET_SCANOUT: 974 virtio_gpu_set_scanout(g, cmd); 975 break; 976 case VIRTIO_GPU_CMD_SET_SCANOUT_BLOB: 977 if (!virtio_gpu_blob_enabled(g->parent_obj.conf)) { 978 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 979 break; 980 } 981 virtio_gpu_set_scanout_blob(g, cmd); 982 break; 983 case VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING: 984 virtio_gpu_resource_attach_backing(g, cmd); 985 break; 986 case VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING: 987 virtio_gpu_resource_detach_backing(g, cmd); 988 break; 989 default: 990 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; 991 break; 992 } 993 if (!cmd->finished) { 994 virtio_gpu_ctrl_response_nodata(g, cmd, cmd->error ? cmd->error : 995 VIRTIO_GPU_RESP_OK_NODATA); 996 } 997 } 998 999 static void virtio_gpu_handle_ctrl_cb(VirtIODevice *vdev, VirtQueue *vq) 1000 { 1001 VirtIOGPU *g = VIRTIO_GPU(vdev); 1002 qemu_bh_schedule(g->ctrl_bh); 1003 } 1004 1005 static void virtio_gpu_handle_cursor_cb(VirtIODevice *vdev, VirtQueue *vq) 1006 { 1007 VirtIOGPU *g = VIRTIO_GPU(vdev); 1008 qemu_bh_schedule(g->cursor_bh); 1009 } 1010 1011 void virtio_gpu_process_cmdq(VirtIOGPU *g) 1012 { 1013 struct virtio_gpu_ctrl_command *cmd; 1014 VirtIOGPUClass *vgc = VIRTIO_GPU_GET_CLASS(g); 1015 1016 if (g->processing_cmdq) { 1017 return; 1018 } 1019 g->processing_cmdq = true; 1020 while (!QTAILQ_EMPTY(&g->cmdq)) { 1021 cmd = QTAILQ_FIRST(&g->cmdq); 1022 1023 if (g->parent_obj.renderer_blocked) { 1024 break; 1025 } 1026 1027 /* process command */ 1028 vgc->process_cmd(g, cmd); 1029 1030 QTAILQ_REMOVE(&g->cmdq, cmd, next); 1031 if (virtio_gpu_stats_enabled(g->parent_obj.conf)) { 1032 g->stats.requests++; 1033 } 1034 1035 if (!cmd->finished) { 1036 QTAILQ_INSERT_TAIL(&g->fenceq, cmd, next); 1037 g->inflight++; 1038 if (virtio_gpu_stats_enabled(g->parent_obj.conf)) { 1039 if (g->stats.max_inflight < g->inflight) { 1040 g->stats.max_inflight = g->inflight; 1041 } 1042 fprintf(stderr, "inflight: %3d (+)\r", g->inflight); 1043 } 1044 } else { 1045 g_free(cmd); 1046 } 1047 } 1048 g->processing_cmdq = false; 1049 } 1050 1051 static void virtio_gpu_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq) 1052 { 1053 VirtIOGPU *g = VIRTIO_GPU(vdev); 1054 struct virtio_gpu_ctrl_command *cmd; 1055 1056 if (!virtio_queue_ready(vq)) { 1057 return; 1058 } 1059 1060 cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command)); 1061 while (cmd) { 1062 cmd->vq = vq; 1063 cmd->error = 0; 1064 cmd->finished = false; 1065 QTAILQ_INSERT_TAIL(&g->cmdq, cmd, next); 1066 cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command)); 1067 } 1068 1069 virtio_gpu_process_cmdq(g); 1070 } 1071 1072 static void virtio_gpu_ctrl_bh(void *opaque) 1073 { 1074 VirtIOGPU *g = opaque; 1075 VirtIOGPUClass *vgc = VIRTIO_GPU_GET_CLASS(g); 1076 1077 vgc->handle_ctrl(&g->parent_obj.parent_obj, g->ctrl_vq); 1078 } 1079 1080 static void virtio_gpu_handle_cursor(VirtIODevice *vdev, VirtQueue *vq) 1081 { 1082 VirtIOGPU *g = VIRTIO_GPU(vdev); 1083 VirtQueueElement *elem; 1084 size_t s; 1085 struct virtio_gpu_update_cursor cursor_info; 1086 1087 if (!virtio_queue_ready(vq)) { 1088 return; 1089 } 1090 for (;;) { 1091 elem = virtqueue_pop(vq, sizeof(VirtQueueElement)); 1092 if (!elem) { 1093 break; 1094 } 1095 1096 s = iov_to_buf(elem->out_sg, elem->out_num, 0, 1097 &cursor_info, sizeof(cursor_info)); 1098 if (s != sizeof(cursor_info)) { 1099 qemu_log_mask(LOG_GUEST_ERROR, 1100 "%s: cursor size incorrect %zu vs %zu\n", 1101 __func__, s, sizeof(cursor_info)); 1102 } else { 1103 virtio_gpu_bswap_32(&cursor_info, sizeof(cursor_info)); 1104 update_cursor(g, &cursor_info); 1105 } 1106 virtqueue_push(vq, elem, 0); 1107 virtio_notify(vdev, vq); 1108 g_free(elem); 1109 } 1110 } 1111 1112 static void virtio_gpu_cursor_bh(void *opaque) 1113 { 1114 VirtIOGPU *g = opaque; 1115 virtio_gpu_handle_cursor(&g->parent_obj.parent_obj, g->cursor_vq); 1116 } 1117 1118 static const VMStateDescription vmstate_virtio_gpu_scanout = { 1119 .name = "virtio-gpu-one-scanout", 1120 .version_id = 1, 1121 .fields = (VMStateField[]) { 1122 VMSTATE_UINT32(resource_id, struct virtio_gpu_scanout), 1123 VMSTATE_UINT32(width, struct virtio_gpu_scanout), 1124 VMSTATE_UINT32(height, struct virtio_gpu_scanout), 1125 VMSTATE_INT32(x, struct virtio_gpu_scanout), 1126 VMSTATE_INT32(y, struct virtio_gpu_scanout), 1127 VMSTATE_UINT32(cursor.resource_id, struct virtio_gpu_scanout), 1128 VMSTATE_UINT32(cursor.hot_x, struct virtio_gpu_scanout), 1129 VMSTATE_UINT32(cursor.hot_y, struct virtio_gpu_scanout), 1130 VMSTATE_UINT32(cursor.pos.x, struct virtio_gpu_scanout), 1131 VMSTATE_UINT32(cursor.pos.y, struct virtio_gpu_scanout), 1132 VMSTATE_END_OF_LIST() 1133 }, 1134 }; 1135 1136 static const VMStateDescription vmstate_virtio_gpu_scanouts = { 1137 .name = "virtio-gpu-scanouts", 1138 .version_id = 1, 1139 .fields = (VMStateField[]) { 1140 VMSTATE_INT32(parent_obj.enable, struct VirtIOGPU), 1141 VMSTATE_UINT32_EQUAL(parent_obj.conf.max_outputs, 1142 struct VirtIOGPU, NULL), 1143 VMSTATE_STRUCT_VARRAY_UINT32(parent_obj.scanout, struct VirtIOGPU, 1144 parent_obj.conf.max_outputs, 1, 1145 vmstate_virtio_gpu_scanout, 1146 struct virtio_gpu_scanout), 1147 VMSTATE_END_OF_LIST() 1148 }, 1149 }; 1150 1151 static int virtio_gpu_save(QEMUFile *f, void *opaque, size_t size, 1152 const VMStateField *field, JSONWriter *vmdesc) 1153 { 1154 VirtIOGPU *g = opaque; 1155 struct virtio_gpu_simple_resource *res; 1156 int i; 1157 1158 /* in 2d mode we should never find unprocessed commands here */ 1159 assert(QTAILQ_EMPTY(&g->cmdq)); 1160 1161 QTAILQ_FOREACH(res, &g->reslist, next) { 1162 qemu_put_be32(f, res->resource_id); 1163 qemu_put_be32(f, res->width); 1164 qemu_put_be32(f, res->height); 1165 qemu_put_be32(f, res->format); 1166 qemu_put_be32(f, res->iov_cnt); 1167 for (i = 0; i < res->iov_cnt; i++) { 1168 qemu_put_be64(f, res->addrs[i]); 1169 qemu_put_be32(f, res->iov[i].iov_len); 1170 } 1171 qemu_put_buffer(f, (void *)pixman_image_get_data(res->image), 1172 pixman_image_get_stride(res->image) * res->height); 1173 } 1174 qemu_put_be32(f, 0); /* end of list */ 1175 1176 return vmstate_save_state(f, &vmstate_virtio_gpu_scanouts, g, NULL); 1177 } 1178 1179 static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size, 1180 const VMStateField *field) 1181 { 1182 VirtIOGPU *g = opaque; 1183 struct virtio_gpu_simple_resource *res; 1184 struct virtio_gpu_scanout *scanout; 1185 uint32_t resource_id, pformat; 1186 int i; 1187 1188 g->hostmem = 0; 1189 1190 resource_id = qemu_get_be32(f); 1191 while (resource_id != 0) { 1192 res = virtio_gpu_find_resource(g, resource_id); 1193 if (res) { 1194 return -EINVAL; 1195 } 1196 1197 res = g_new0(struct virtio_gpu_simple_resource, 1); 1198 res->resource_id = resource_id; 1199 res->width = qemu_get_be32(f); 1200 res->height = qemu_get_be32(f); 1201 res->format = qemu_get_be32(f); 1202 res->iov_cnt = qemu_get_be32(f); 1203 1204 /* allocate */ 1205 pformat = virtio_gpu_get_pixman_format(res->format); 1206 if (!pformat) { 1207 g_free(res); 1208 return -EINVAL; 1209 } 1210 res->image = pixman_image_create_bits(pformat, 1211 res->width, res->height, 1212 NULL, 0); 1213 if (!res->image) { 1214 g_free(res); 1215 return -EINVAL; 1216 } 1217 1218 res->hostmem = calc_image_hostmem(pformat, res->width, res->height); 1219 1220 res->addrs = g_new(uint64_t, res->iov_cnt); 1221 res->iov = g_new(struct iovec, res->iov_cnt); 1222 1223 /* read data */ 1224 for (i = 0; i < res->iov_cnt; i++) { 1225 res->addrs[i] = qemu_get_be64(f); 1226 res->iov[i].iov_len = qemu_get_be32(f); 1227 } 1228 qemu_get_buffer(f, (void *)pixman_image_get_data(res->image), 1229 pixman_image_get_stride(res->image) * res->height); 1230 1231 /* restore mapping */ 1232 for (i = 0; i < res->iov_cnt; i++) { 1233 hwaddr len = res->iov[i].iov_len; 1234 res->iov[i].iov_base = 1235 dma_memory_map(VIRTIO_DEVICE(g)->dma_as, 1236 res->addrs[i], &len, DMA_DIRECTION_TO_DEVICE); 1237 1238 if (!res->iov[i].iov_base || len != res->iov[i].iov_len) { 1239 /* Clean up the half-a-mapping we just created... */ 1240 if (res->iov[i].iov_base) { 1241 dma_memory_unmap(VIRTIO_DEVICE(g)->dma_as, 1242 res->iov[i].iov_base, 1243 len, 1244 DMA_DIRECTION_TO_DEVICE, 1245 0); 1246 } 1247 /* ...and the mappings for previous loop iterations */ 1248 res->iov_cnt = i; 1249 virtio_gpu_cleanup_mapping(g, res); 1250 pixman_image_unref(res->image); 1251 g_free(res); 1252 return -EINVAL; 1253 } 1254 } 1255 1256 QTAILQ_INSERT_HEAD(&g->reslist, res, next); 1257 g->hostmem += res->hostmem; 1258 1259 resource_id = qemu_get_be32(f); 1260 } 1261 1262 /* load & apply scanout state */ 1263 vmstate_load_state(f, &vmstate_virtio_gpu_scanouts, g, 1); 1264 for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { 1265 scanout = &g->parent_obj.scanout[i]; 1266 if (!scanout->resource_id) { 1267 continue; 1268 } 1269 res = virtio_gpu_find_resource(g, scanout->resource_id); 1270 if (!res) { 1271 return -EINVAL; 1272 } 1273 scanout->ds = qemu_create_displaysurface_pixman(res->image); 1274 if (!scanout->ds) { 1275 return -EINVAL; 1276 } 1277 1278 dpy_gfx_replace_surface(scanout->con, scanout->ds); 1279 dpy_gfx_update_full(scanout->con); 1280 if (scanout->cursor.resource_id) { 1281 update_cursor(g, &scanout->cursor); 1282 } 1283 res->scanout_bitmask |= (1 << i); 1284 } 1285 1286 return 0; 1287 } 1288 1289 void virtio_gpu_device_realize(DeviceState *qdev, Error **errp) 1290 { 1291 VirtIODevice *vdev = VIRTIO_DEVICE(qdev); 1292 VirtIOGPU *g = VIRTIO_GPU(qdev); 1293 1294 if (virtio_gpu_blob_enabled(g->parent_obj.conf)) { 1295 if (!virtio_gpu_have_udmabuf()) { 1296 error_setg(errp, "cannot enable blob resources without udmabuf"); 1297 return; 1298 } 1299 1300 if (virtio_gpu_virgl_enabled(g->parent_obj.conf)) { 1301 error_setg(errp, "blobs and virgl are not compatible (yet)"); 1302 return; 1303 } 1304 } 1305 1306 if (!virtio_gpu_base_device_realize(qdev, 1307 virtio_gpu_handle_ctrl_cb, 1308 virtio_gpu_handle_cursor_cb, 1309 errp)) { 1310 return; 1311 } 1312 1313 g->ctrl_vq = virtio_get_queue(vdev, 0); 1314 g->cursor_vq = virtio_get_queue(vdev, 1); 1315 g->ctrl_bh = qemu_bh_new(virtio_gpu_ctrl_bh, g); 1316 g->cursor_bh = qemu_bh_new(virtio_gpu_cursor_bh, g); 1317 QTAILQ_INIT(&g->reslist); 1318 QTAILQ_INIT(&g->cmdq); 1319 QTAILQ_INIT(&g->fenceq); 1320 } 1321 1322 void virtio_gpu_reset(VirtIODevice *vdev) 1323 { 1324 VirtIOGPU *g = VIRTIO_GPU(vdev); 1325 struct virtio_gpu_simple_resource *res, *tmp; 1326 struct virtio_gpu_ctrl_command *cmd; 1327 1328 QTAILQ_FOREACH_SAFE(res, &g->reslist, next, tmp) { 1329 virtio_gpu_resource_destroy(g, res); 1330 } 1331 1332 while (!QTAILQ_EMPTY(&g->cmdq)) { 1333 cmd = QTAILQ_FIRST(&g->cmdq); 1334 QTAILQ_REMOVE(&g->cmdq, cmd, next); 1335 g_free(cmd); 1336 } 1337 1338 while (!QTAILQ_EMPTY(&g->fenceq)) { 1339 cmd = QTAILQ_FIRST(&g->fenceq); 1340 QTAILQ_REMOVE(&g->fenceq, cmd, next); 1341 g->inflight--; 1342 g_free(cmd); 1343 } 1344 1345 virtio_gpu_base_reset(VIRTIO_GPU_BASE(vdev)); 1346 } 1347 1348 static void 1349 virtio_gpu_get_config(VirtIODevice *vdev, uint8_t *config) 1350 { 1351 VirtIOGPUBase *g = VIRTIO_GPU_BASE(vdev); 1352 1353 memcpy(config, &g->virtio_config, sizeof(g->virtio_config)); 1354 } 1355 1356 static void 1357 virtio_gpu_set_config(VirtIODevice *vdev, const uint8_t *config) 1358 { 1359 VirtIOGPUBase *g = VIRTIO_GPU_BASE(vdev); 1360 const struct virtio_gpu_config *vgconfig = 1361 (const struct virtio_gpu_config *)config; 1362 1363 if (vgconfig->events_clear) { 1364 g->virtio_config.events_read &= ~vgconfig->events_clear; 1365 } 1366 } 1367 1368 /* 1369 * For historical reasons virtio_gpu does not adhere to virtio migration 1370 * scheme as described in doc/virtio-migration.txt, in a sense that no 1371 * save/load callback are provided to the core. Instead the device data 1372 * is saved/loaded after the core data. 1373 * 1374 * Because of this we need a special vmsd. 1375 */ 1376 static const VMStateDescription vmstate_virtio_gpu = { 1377 .name = "virtio-gpu", 1378 .minimum_version_id = VIRTIO_GPU_VM_VERSION, 1379 .version_id = VIRTIO_GPU_VM_VERSION, 1380 .fields = (VMStateField[]) { 1381 VMSTATE_VIRTIO_DEVICE /* core */, 1382 { 1383 .name = "virtio-gpu", 1384 .info = &(const VMStateInfo) { 1385 .name = "virtio-gpu", 1386 .get = virtio_gpu_load, 1387 .put = virtio_gpu_save, 1388 }, 1389 .flags = VMS_SINGLE, 1390 } /* device */, 1391 VMSTATE_END_OF_LIST() 1392 }, 1393 }; 1394 1395 static Property virtio_gpu_properties[] = { 1396 VIRTIO_GPU_BASE_PROPERTIES(VirtIOGPU, parent_obj.conf), 1397 DEFINE_PROP_SIZE("max_hostmem", VirtIOGPU, conf_max_hostmem, 1398 256 * MiB), 1399 DEFINE_PROP_BIT("blob", VirtIOGPU, parent_obj.conf.flags, 1400 VIRTIO_GPU_FLAG_BLOB_ENABLED, false), 1401 DEFINE_PROP_END_OF_LIST(), 1402 }; 1403 1404 static void virtio_gpu_class_init(ObjectClass *klass, void *data) 1405 { 1406 DeviceClass *dc = DEVICE_CLASS(klass); 1407 VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); 1408 VirtIOGPUClass *vgc = VIRTIO_GPU_CLASS(klass); 1409 1410 vgc->handle_ctrl = virtio_gpu_handle_ctrl; 1411 vgc->process_cmd = virtio_gpu_simple_process_cmd; 1412 vgc->update_cursor_data = virtio_gpu_update_cursor_data; 1413 1414 vdc->realize = virtio_gpu_device_realize; 1415 vdc->reset = virtio_gpu_reset; 1416 vdc->get_config = virtio_gpu_get_config; 1417 vdc->set_config = virtio_gpu_set_config; 1418 1419 dc->vmsd = &vmstate_virtio_gpu; 1420 device_class_set_props(dc, virtio_gpu_properties); 1421 } 1422 1423 static const TypeInfo virtio_gpu_info = { 1424 .name = TYPE_VIRTIO_GPU, 1425 .parent = TYPE_VIRTIO_GPU_BASE, 1426 .instance_size = sizeof(VirtIOGPU), 1427 .class_size = sizeof(VirtIOGPUClass), 1428 .class_init = virtio_gpu_class_init, 1429 }; 1430 1431 static void virtio_register_types(void) 1432 { 1433 type_register_static(&virtio_gpu_info); 1434 } 1435 1436 type_init(virtio_register_types) 1437