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 .refresh_rate = b->req_state[scanout].refresh_rate, 221 }; 222 223 edid->size = cpu_to_le32(sizeof(edid->edid)); 224 qemu_edid_generate(edid->edid, sizeof(edid->edid), &info); 225 } 226 227 void virtio_gpu_get_edid(VirtIOGPU *g, 228 struct virtio_gpu_ctrl_command *cmd) 229 { 230 struct virtio_gpu_resp_edid edid; 231 struct virtio_gpu_cmd_get_edid get_edid; 232 VirtIOGPUBase *b = VIRTIO_GPU_BASE(g); 233 234 VIRTIO_GPU_FILL_CMD(get_edid); 235 virtio_gpu_bswap_32(&get_edid, sizeof(get_edid)); 236 237 if (get_edid.scanout >= b->conf.max_outputs) { 238 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 239 return; 240 } 241 242 trace_virtio_gpu_cmd_get_edid(get_edid.scanout); 243 memset(&edid, 0, sizeof(edid)); 244 edid.hdr.type = VIRTIO_GPU_RESP_OK_EDID; 245 virtio_gpu_generate_edid(g, get_edid.scanout, &edid); 246 virtio_gpu_ctrl_response(g, cmd, &edid.hdr, sizeof(edid)); 247 } 248 249 static uint32_t calc_image_hostmem(pixman_format_code_t pformat, 250 uint32_t width, uint32_t height) 251 { 252 /* Copied from pixman/pixman-bits-image.c, skip integer overflow check. 253 * pixman_image_create_bits will fail in case it overflow. 254 */ 255 256 int bpp = PIXMAN_FORMAT_BPP(pformat); 257 int stride = ((width * bpp + 0x1f) >> 5) * sizeof(uint32_t); 258 return height * stride; 259 } 260 261 static void virtio_gpu_resource_create_2d(VirtIOGPU *g, 262 struct virtio_gpu_ctrl_command *cmd) 263 { 264 pixman_format_code_t pformat; 265 struct virtio_gpu_simple_resource *res; 266 struct virtio_gpu_resource_create_2d c2d; 267 268 VIRTIO_GPU_FILL_CMD(c2d); 269 virtio_gpu_bswap_32(&c2d, sizeof(c2d)); 270 trace_virtio_gpu_cmd_res_create_2d(c2d.resource_id, c2d.format, 271 c2d.width, c2d.height); 272 273 if (c2d.resource_id == 0) { 274 qemu_log_mask(LOG_GUEST_ERROR, "%s: resource id 0 is not allowed\n", 275 __func__); 276 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 277 return; 278 } 279 280 res = virtio_gpu_find_resource(g, c2d.resource_id); 281 if (res) { 282 qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already exists %d\n", 283 __func__, c2d.resource_id); 284 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 285 return; 286 } 287 288 res = g_new0(struct virtio_gpu_simple_resource, 1); 289 290 res->width = c2d.width; 291 res->height = c2d.height; 292 res->format = c2d.format; 293 res->resource_id = c2d.resource_id; 294 295 pformat = virtio_gpu_get_pixman_format(c2d.format); 296 if (!pformat) { 297 qemu_log_mask(LOG_GUEST_ERROR, 298 "%s: host couldn't handle guest format %d\n", 299 __func__, c2d.format); 300 g_free(res); 301 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 302 return; 303 } 304 305 res->hostmem = calc_image_hostmem(pformat, c2d.width, c2d.height); 306 if (res->hostmem + g->hostmem < g->conf_max_hostmem) { 307 res->image = pixman_image_create_bits(pformat, 308 c2d.width, 309 c2d.height, 310 NULL, 0); 311 } 312 313 if (!res->image) { 314 qemu_log_mask(LOG_GUEST_ERROR, 315 "%s: resource creation failed %d %d %d\n", 316 __func__, c2d.resource_id, c2d.width, c2d.height); 317 g_free(res); 318 cmd->error = VIRTIO_GPU_RESP_ERR_OUT_OF_MEMORY; 319 return; 320 } 321 322 QTAILQ_INSERT_HEAD(&g->reslist, res, next); 323 g->hostmem += res->hostmem; 324 } 325 326 static void virtio_gpu_resource_create_blob(VirtIOGPU *g, 327 struct virtio_gpu_ctrl_command *cmd) 328 { 329 struct virtio_gpu_simple_resource *res; 330 struct virtio_gpu_resource_create_blob cblob; 331 int ret; 332 333 VIRTIO_GPU_FILL_CMD(cblob); 334 virtio_gpu_create_blob_bswap(&cblob); 335 trace_virtio_gpu_cmd_res_create_blob(cblob.resource_id, cblob.size); 336 337 if (cblob.resource_id == 0) { 338 qemu_log_mask(LOG_GUEST_ERROR, "%s: resource id 0 is not allowed\n", 339 __func__); 340 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 341 return; 342 } 343 344 if (cblob.blob_mem != VIRTIO_GPU_BLOB_MEM_GUEST && 345 cblob.blob_flags != VIRTIO_GPU_BLOB_FLAG_USE_SHAREABLE) { 346 qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid memory type\n", 347 __func__); 348 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 349 return; 350 } 351 352 if (virtio_gpu_find_resource(g, cblob.resource_id)) { 353 qemu_log_mask(LOG_GUEST_ERROR, "%s: resource already exists %d\n", 354 __func__, cblob.resource_id); 355 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 356 return; 357 } 358 359 res = g_new0(struct virtio_gpu_simple_resource, 1); 360 res->resource_id = cblob.resource_id; 361 res->blob_size = cblob.size; 362 363 ret = virtio_gpu_create_mapping_iov(g, cblob.nr_entries, sizeof(cblob), 364 cmd, &res->addrs, &res->iov, 365 &res->iov_cnt); 366 if (ret != 0) { 367 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; 368 g_free(res); 369 return; 370 } 371 372 virtio_gpu_init_udmabuf(res); 373 QTAILQ_INSERT_HEAD(&g->reslist, res, next); 374 } 375 376 static void virtio_gpu_disable_scanout(VirtIOGPU *g, int scanout_id) 377 { 378 struct virtio_gpu_scanout *scanout = &g->parent_obj.scanout[scanout_id]; 379 struct virtio_gpu_simple_resource *res; 380 381 if (scanout->resource_id == 0) { 382 return; 383 } 384 385 res = virtio_gpu_find_resource(g, scanout->resource_id); 386 if (res) { 387 res->scanout_bitmask &= ~(1 << scanout_id); 388 } 389 390 dpy_gfx_replace_surface(scanout->con, NULL); 391 scanout->resource_id = 0; 392 scanout->ds = NULL; 393 scanout->width = 0; 394 scanout->height = 0; 395 } 396 397 static void virtio_gpu_resource_destroy(VirtIOGPU *g, 398 struct virtio_gpu_simple_resource *res) 399 { 400 int i; 401 402 if (res->scanout_bitmask) { 403 for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { 404 if (res->scanout_bitmask & (1 << i)) { 405 virtio_gpu_disable_scanout(g, i); 406 } 407 } 408 } 409 410 qemu_pixman_image_unref(res->image); 411 virtio_gpu_cleanup_mapping(g, res); 412 QTAILQ_REMOVE(&g->reslist, res, next); 413 g->hostmem -= res->hostmem; 414 g_free(res); 415 } 416 417 static void virtio_gpu_resource_unref(VirtIOGPU *g, 418 struct virtio_gpu_ctrl_command *cmd) 419 { 420 struct virtio_gpu_simple_resource *res; 421 struct virtio_gpu_resource_unref unref; 422 423 VIRTIO_GPU_FILL_CMD(unref); 424 virtio_gpu_bswap_32(&unref, sizeof(unref)); 425 trace_virtio_gpu_cmd_res_unref(unref.resource_id); 426 427 res = virtio_gpu_find_resource(g, unref.resource_id); 428 if (!res) { 429 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal resource specified %d\n", 430 __func__, unref.resource_id); 431 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 432 return; 433 } 434 virtio_gpu_resource_destroy(g, res); 435 } 436 437 static void virtio_gpu_transfer_to_host_2d(VirtIOGPU *g, 438 struct virtio_gpu_ctrl_command *cmd) 439 { 440 struct virtio_gpu_simple_resource *res; 441 int h; 442 uint32_t src_offset, dst_offset, stride; 443 int bpp; 444 pixman_format_code_t format; 445 struct virtio_gpu_transfer_to_host_2d t2d; 446 447 VIRTIO_GPU_FILL_CMD(t2d); 448 virtio_gpu_t2d_bswap(&t2d); 449 trace_virtio_gpu_cmd_res_xfer_toh_2d(t2d.resource_id); 450 451 res = virtio_gpu_find_check_resource(g, t2d.resource_id, true, 452 __func__, &cmd->error); 453 if (!res || res->blob) { 454 return; 455 } 456 457 if (t2d.r.x > res->width || 458 t2d.r.y > res->height || 459 t2d.r.width > res->width || 460 t2d.r.height > res->height || 461 t2d.r.x + t2d.r.width > res->width || 462 t2d.r.y + t2d.r.height > res->height) { 463 qemu_log_mask(LOG_GUEST_ERROR, "%s: transfer bounds outside resource" 464 " bounds for resource %d: %d %d %d %d vs %d %d\n", 465 __func__, t2d.resource_id, t2d.r.x, t2d.r.y, 466 t2d.r.width, t2d.r.height, res->width, res->height); 467 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 468 return; 469 } 470 471 format = pixman_image_get_format(res->image); 472 bpp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(format), 8); 473 stride = pixman_image_get_stride(res->image); 474 475 if (t2d.offset || t2d.r.x || t2d.r.y || 476 t2d.r.width != pixman_image_get_width(res->image)) { 477 void *img_data = pixman_image_get_data(res->image); 478 for (h = 0; h < t2d.r.height; h++) { 479 src_offset = t2d.offset + stride * h; 480 dst_offset = (t2d.r.y + h) * stride + (t2d.r.x * bpp); 481 482 iov_to_buf(res->iov, res->iov_cnt, src_offset, 483 (uint8_t *)img_data 484 + dst_offset, t2d.r.width * bpp); 485 } 486 } else { 487 iov_to_buf(res->iov, res->iov_cnt, 0, 488 pixman_image_get_data(res->image), 489 pixman_image_get_stride(res->image) 490 * pixman_image_get_height(res->image)); 491 } 492 } 493 494 static void virtio_gpu_resource_flush(VirtIOGPU *g, 495 struct virtio_gpu_ctrl_command *cmd) 496 { 497 struct virtio_gpu_simple_resource *res; 498 struct virtio_gpu_resource_flush rf; 499 struct virtio_gpu_scanout *scanout; 500 pixman_region16_t flush_region; 501 int i; 502 503 VIRTIO_GPU_FILL_CMD(rf); 504 virtio_gpu_bswap_32(&rf, sizeof(rf)); 505 trace_virtio_gpu_cmd_res_flush(rf.resource_id, 506 rf.r.width, rf.r.height, rf.r.x, rf.r.y); 507 508 res = virtio_gpu_find_check_resource(g, rf.resource_id, false, 509 __func__, &cmd->error); 510 if (!res) { 511 return; 512 } 513 514 if (res->blob) { 515 for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { 516 scanout = &g->parent_obj.scanout[i]; 517 if (scanout->resource_id == res->resource_id && 518 rf.r.x < scanout->x + scanout->width && 519 rf.r.x + rf.r.width >= scanout->x && 520 rf.r.y < scanout->y + scanout->height && 521 rf.r.y + rf.r.height >= scanout->y && 522 console_has_gl(scanout->con)) { 523 dpy_gl_update(scanout->con, 0, 0, scanout->width, 524 scanout->height); 525 } 526 } 527 return; 528 } 529 530 if (!res->blob && 531 (rf.r.x > res->width || 532 rf.r.y > res->height || 533 rf.r.width > res->width || 534 rf.r.height > res->height || 535 rf.r.x + rf.r.width > res->width || 536 rf.r.y + rf.r.height > res->height)) { 537 qemu_log_mask(LOG_GUEST_ERROR, "%s: flush bounds outside resource" 538 " bounds for resource %d: %d %d %d %d vs %d %d\n", 539 __func__, rf.resource_id, rf.r.x, rf.r.y, 540 rf.r.width, rf.r.height, res->width, res->height); 541 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 542 return; 543 } 544 545 pixman_region_init_rect(&flush_region, 546 rf.r.x, rf.r.y, rf.r.width, rf.r.height); 547 for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { 548 pixman_region16_t region, finalregion; 549 pixman_box16_t *extents; 550 551 if (!(res->scanout_bitmask & (1 << i))) { 552 continue; 553 } 554 scanout = &g->parent_obj.scanout[i]; 555 556 pixman_region_init(&finalregion); 557 pixman_region_init_rect(®ion, scanout->x, scanout->y, 558 scanout->width, scanout->height); 559 560 pixman_region_intersect(&finalregion, &flush_region, ®ion); 561 pixman_region_translate(&finalregion, -scanout->x, -scanout->y); 562 extents = pixman_region_extents(&finalregion); 563 /* work out the area we need to update for each console */ 564 dpy_gfx_update(g->parent_obj.scanout[i].con, 565 extents->x1, extents->y1, 566 extents->x2 - extents->x1, 567 extents->y2 - extents->y1); 568 569 pixman_region_fini(®ion); 570 pixman_region_fini(&finalregion); 571 } 572 pixman_region_fini(&flush_region); 573 } 574 575 static void virtio_unref_resource(pixman_image_t *image, void *data) 576 { 577 pixman_image_unref(data); 578 } 579 580 static void virtio_gpu_update_scanout(VirtIOGPU *g, 581 uint32_t scanout_id, 582 struct virtio_gpu_simple_resource *res, 583 struct virtio_gpu_rect *r) 584 { 585 struct virtio_gpu_simple_resource *ores; 586 struct virtio_gpu_scanout *scanout; 587 588 scanout = &g->parent_obj.scanout[scanout_id]; 589 ores = virtio_gpu_find_resource(g, scanout->resource_id); 590 if (ores) { 591 ores->scanout_bitmask &= ~(1 << scanout_id); 592 } 593 594 res->scanout_bitmask |= (1 << scanout_id); 595 scanout->resource_id = res->resource_id; 596 scanout->x = r->x; 597 scanout->y = r->y; 598 scanout->width = r->width; 599 scanout->height = r->height; 600 } 601 602 static void virtio_gpu_do_set_scanout(VirtIOGPU *g, 603 uint32_t scanout_id, 604 struct virtio_gpu_framebuffer *fb, 605 struct virtio_gpu_simple_resource *res, 606 struct virtio_gpu_rect *r, 607 uint32_t *error) 608 { 609 struct virtio_gpu_scanout *scanout; 610 uint8_t *data; 611 612 scanout = &g->parent_obj.scanout[scanout_id]; 613 614 if (r->x > fb->width || 615 r->y > fb->height || 616 r->width < 16 || 617 r->height < 16 || 618 r->width > fb->width || 619 r->height > fb->height || 620 r->x + r->width > fb->width || 621 r->y + r->height > fb->height) { 622 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout %d bounds for" 623 " resource %d, rect (%d,%d)+%d,%d, fb %d %d\n", 624 __func__, scanout_id, res->resource_id, 625 r->x, r->y, r->width, r->height, 626 fb->width, fb->height); 627 *error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 628 return; 629 } 630 631 g->parent_obj.enable = 1; 632 633 if (res->blob) { 634 if (console_has_gl(scanout->con)) { 635 if (!virtio_gpu_update_dmabuf(g, scanout_id, res, fb, r)) { 636 virtio_gpu_update_scanout(g, scanout_id, res, r); 637 return; 638 } 639 } 640 641 data = res->blob; 642 } else { 643 data = (uint8_t *)pixman_image_get_data(res->image); 644 } 645 646 /* create a surface for this scanout */ 647 if ((res->blob && !console_has_gl(scanout->con)) || 648 !scanout->ds || 649 surface_data(scanout->ds) != data + fb->offset || 650 scanout->width != r->width || 651 scanout->height != r->height) { 652 pixman_image_t *rect; 653 void *ptr = data + fb->offset; 654 rect = pixman_image_create_bits(fb->format, r->width, r->height, 655 ptr, fb->stride); 656 657 if (res->image) { 658 pixman_image_ref(res->image); 659 pixman_image_set_destroy_function(rect, virtio_unref_resource, 660 res->image); 661 } 662 663 /* realloc the surface ptr */ 664 scanout->ds = qemu_create_displaysurface_pixman(rect); 665 if (!scanout->ds) { 666 *error = VIRTIO_GPU_RESP_ERR_UNSPEC; 667 return; 668 } 669 670 pixman_image_unref(rect); 671 dpy_gfx_replace_surface(g->parent_obj.scanout[scanout_id].con, 672 scanout->ds); 673 } 674 675 virtio_gpu_update_scanout(g, scanout_id, res, r); 676 } 677 678 static void virtio_gpu_set_scanout(VirtIOGPU *g, 679 struct virtio_gpu_ctrl_command *cmd) 680 { 681 struct virtio_gpu_simple_resource *res; 682 struct virtio_gpu_framebuffer fb = { 0 }; 683 struct virtio_gpu_set_scanout ss; 684 685 VIRTIO_GPU_FILL_CMD(ss); 686 virtio_gpu_bswap_32(&ss, sizeof(ss)); 687 trace_virtio_gpu_cmd_set_scanout(ss.scanout_id, ss.resource_id, 688 ss.r.width, ss.r.height, ss.r.x, ss.r.y); 689 690 if (ss.scanout_id >= g->parent_obj.conf.max_outputs) { 691 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d", 692 __func__, ss.scanout_id); 693 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID; 694 return; 695 } 696 697 if (ss.resource_id == 0) { 698 virtio_gpu_disable_scanout(g, ss.scanout_id); 699 return; 700 } 701 702 res = virtio_gpu_find_check_resource(g, ss.resource_id, true, 703 __func__, &cmd->error); 704 if (!res) { 705 return; 706 } 707 708 fb.format = pixman_image_get_format(res->image); 709 fb.bytes_pp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(fb.format), 8); 710 fb.width = pixman_image_get_width(res->image); 711 fb.height = pixman_image_get_height(res->image); 712 fb.stride = pixman_image_get_stride(res->image); 713 fb.offset = ss.r.x * fb.bytes_pp + ss.r.y * fb.stride; 714 715 virtio_gpu_do_set_scanout(g, ss.scanout_id, 716 &fb, res, &ss.r, &cmd->error); 717 } 718 719 static void virtio_gpu_set_scanout_blob(VirtIOGPU *g, 720 struct virtio_gpu_ctrl_command *cmd) 721 { 722 struct virtio_gpu_simple_resource *res; 723 struct virtio_gpu_framebuffer fb = { 0 }; 724 struct virtio_gpu_set_scanout_blob ss; 725 uint64_t fbend; 726 727 VIRTIO_GPU_FILL_CMD(ss); 728 virtio_gpu_scanout_blob_bswap(&ss); 729 trace_virtio_gpu_cmd_set_scanout_blob(ss.scanout_id, ss.resource_id, 730 ss.r.width, ss.r.height, ss.r.x, 731 ss.r.y); 732 733 if (ss.scanout_id >= g->parent_obj.conf.max_outputs) { 734 qemu_log_mask(LOG_GUEST_ERROR, "%s: illegal scanout id specified %d", 735 __func__, ss.scanout_id); 736 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID; 737 return; 738 } 739 740 if (ss.resource_id == 0) { 741 virtio_gpu_disable_scanout(g, ss.scanout_id); 742 return; 743 } 744 745 res = virtio_gpu_find_check_resource(g, ss.resource_id, true, 746 __func__, &cmd->error); 747 if (!res) { 748 return; 749 } 750 751 fb.format = virtio_gpu_get_pixman_format(ss.format); 752 if (!fb.format) { 753 qemu_log_mask(LOG_GUEST_ERROR, 754 "%s: host couldn't handle guest format %d\n", 755 __func__, ss.format); 756 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 757 return; 758 } 759 760 fb.bytes_pp = DIV_ROUND_UP(PIXMAN_FORMAT_BPP(fb.format), 8); 761 fb.width = ss.width; 762 fb.height = ss.height; 763 fb.stride = ss.strides[0]; 764 fb.offset = ss.offsets[0] + ss.r.x * fb.bytes_pp + ss.r.y * fb.stride; 765 766 fbend = fb.offset; 767 fbend += fb.stride * (ss.r.height - 1); 768 fbend += fb.bytes_pp * ss.r.width; 769 if (fbend > res->blob_size) { 770 qemu_log_mask(LOG_GUEST_ERROR, 771 "%s: fb end out of range\n", 772 __func__); 773 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 774 return; 775 } 776 777 virtio_gpu_do_set_scanout(g, ss.scanout_id, 778 &fb, res, &ss.r, &cmd->error); 779 } 780 781 int virtio_gpu_create_mapping_iov(VirtIOGPU *g, 782 uint32_t nr_entries, uint32_t offset, 783 struct virtio_gpu_ctrl_command *cmd, 784 uint64_t **addr, struct iovec **iov, 785 uint32_t *niov) 786 { 787 struct virtio_gpu_mem_entry *ents; 788 size_t esize, s; 789 int e, v; 790 791 if (nr_entries > 16384) { 792 qemu_log_mask(LOG_GUEST_ERROR, 793 "%s: nr_entries is too big (%d > 16384)\n", 794 __func__, nr_entries); 795 return -1; 796 } 797 798 esize = sizeof(*ents) * nr_entries; 799 ents = g_malloc(esize); 800 s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num, 801 offset, ents, esize); 802 if (s != esize) { 803 qemu_log_mask(LOG_GUEST_ERROR, 804 "%s: command data size incorrect %zu vs %zu\n", 805 __func__, s, esize); 806 g_free(ents); 807 return -1; 808 } 809 810 *iov = NULL; 811 if (addr) { 812 *addr = NULL; 813 } 814 for (e = 0, v = 0; e < nr_entries; e++) { 815 uint64_t a = le64_to_cpu(ents[e].addr); 816 uint32_t l = le32_to_cpu(ents[e].length); 817 hwaddr len; 818 void *map; 819 820 do { 821 len = l; 822 map = dma_memory_map(VIRTIO_DEVICE(g)->dma_as, a, &len, 823 DMA_DIRECTION_TO_DEVICE, 824 MEMTXATTRS_UNSPECIFIED); 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_renew(struct iovec, *iov, v + 16); 840 if (addr) { 841 *addr = g_renew(uint64_t, *addr, 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 if (!g->parent_obj.renderer_blocked) { 995 virtio_gpu_ctrl_response_nodata(g, cmd, cmd->error ? cmd->error : 996 VIRTIO_GPU_RESP_OK_NODATA); 997 } 998 } 999 } 1000 1001 static void virtio_gpu_handle_ctrl_cb(VirtIODevice *vdev, VirtQueue *vq) 1002 { 1003 VirtIOGPU *g = VIRTIO_GPU(vdev); 1004 qemu_bh_schedule(g->ctrl_bh); 1005 } 1006 1007 static void virtio_gpu_handle_cursor_cb(VirtIODevice *vdev, VirtQueue *vq) 1008 { 1009 VirtIOGPU *g = VIRTIO_GPU(vdev); 1010 qemu_bh_schedule(g->cursor_bh); 1011 } 1012 1013 void virtio_gpu_process_cmdq(VirtIOGPU *g) 1014 { 1015 struct virtio_gpu_ctrl_command *cmd; 1016 VirtIOGPUClass *vgc = VIRTIO_GPU_GET_CLASS(g); 1017 1018 if (g->processing_cmdq) { 1019 return; 1020 } 1021 g->processing_cmdq = true; 1022 while (!QTAILQ_EMPTY(&g->cmdq)) { 1023 cmd = QTAILQ_FIRST(&g->cmdq); 1024 1025 if (g->parent_obj.renderer_blocked) { 1026 break; 1027 } 1028 1029 /* process command */ 1030 vgc->process_cmd(g, cmd); 1031 1032 QTAILQ_REMOVE(&g->cmdq, cmd, next); 1033 if (virtio_gpu_stats_enabled(g->parent_obj.conf)) { 1034 g->stats.requests++; 1035 } 1036 1037 if (!cmd->finished) { 1038 QTAILQ_INSERT_TAIL(&g->fenceq, cmd, next); 1039 g->inflight++; 1040 if (virtio_gpu_stats_enabled(g->parent_obj.conf)) { 1041 if (g->stats.max_inflight < g->inflight) { 1042 g->stats.max_inflight = g->inflight; 1043 } 1044 fprintf(stderr, "inflight: %3d (+)\r", g->inflight); 1045 } 1046 } else { 1047 g_free(cmd); 1048 } 1049 } 1050 g->processing_cmdq = false; 1051 } 1052 1053 static void virtio_gpu_process_fenceq(VirtIOGPU *g) 1054 { 1055 struct virtio_gpu_ctrl_command *cmd, *tmp; 1056 1057 QTAILQ_FOREACH_SAFE(cmd, &g->fenceq, next, tmp) { 1058 trace_virtio_gpu_fence_resp(cmd->cmd_hdr.fence_id); 1059 virtio_gpu_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA); 1060 QTAILQ_REMOVE(&g->fenceq, cmd, next); 1061 g_free(cmd); 1062 g->inflight--; 1063 if (virtio_gpu_stats_enabled(g->parent_obj.conf)) { 1064 fprintf(stderr, "inflight: %3d (-)\r", g->inflight); 1065 } 1066 } 1067 } 1068 1069 static void virtio_gpu_handle_gl_flushed(VirtIOGPUBase *b) 1070 { 1071 VirtIOGPU *g = container_of(b, VirtIOGPU, parent_obj); 1072 1073 virtio_gpu_process_fenceq(g); 1074 virtio_gpu_process_cmdq(g); 1075 } 1076 1077 static void virtio_gpu_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq) 1078 { 1079 VirtIOGPU *g = VIRTIO_GPU(vdev); 1080 struct virtio_gpu_ctrl_command *cmd; 1081 1082 if (!virtio_queue_ready(vq)) { 1083 return; 1084 } 1085 1086 cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command)); 1087 while (cmd) { 1088 cmd->vq = vq; 1089 cmd->error = 0; 1090 cmd->finished = false; 1091 QTAILQ_INSERT_TAIL(&g->cmdq, cmd, next); 1092 cmd = virtqueue_pop(vq, sizeof(struct virtio_gpu_ctrl_command)); 1093 } 1094 1095 virtio_gpu_process_cmdq(g); 1096 } 1097 1098 static void virtio_gpu_ctrl_bh(void *opaque) 1099 { 1100 VirtIOGPU *g = opaque; 1101 VirtIOGPUClass *vgc = VIRTIO_GPU_GET_CLASS(g); 1102 1103 vgc->handle_ctrl(&g->parent_obj.parent_obj, g->ctrl_vq); 1104 } 1105 1106 static void virtio_gpu_handle_cursor(VirtIODevice *vdev, VirtQueue *vq) 1107 { 1108 VirtIOGPU *g = VIRTIO_GPU(vdev); 1109 VirtQueueElement *elem; 1110 size_t s; 1111 struct virtio_gpu_update_cursor cursor_info; 1112 1113 if (!virtio_queue_ready(vq)) { 1114 return; 1115 } 1116 for (;;) { 1117 elem = virtqueue_pop(vq, sizeof(VirtQueueElement)); 1118 if (!elem) { 1119 break; 1120 } 1121 1122 s = iov_to_buf(elem->out_sg, elem->out_num, 0, 1123 &cursor_info, sizeof(cursor_info)); 1124 if (s != sizeof(cursor_info)) { 1125 qemu_log_mask(LOG_GUEST_ERROR, 1126 "%s: cursor size incorrect %zu vs %zu\n", 1127 __func__, s, sizeof(cursor_info)); 1128 } else { 1129 virtio_gpu_bswap_32(&cursor_info, sizeof(cursor_info)); 1130 update_cursor(g, &cursor_info); 1131 } 1132 virtqueue_push(vq, elem, 0); 1133 virtio_notify(vdev, vq); 1134 g_free(elem); 1135 } 1136 } 1137 1138 static void virtio_gpu_cursor_bh(void *opaque) 1139 { 1140 VirtIOGPU *g = opaque; 1141 virtio_gpu_handle_cursor(&g->parent_obj.parent_obj, g->cursor_vq); 1142 } 1143 1144 static const VMStateDescription vmstate_virtio_gpu_scanout = { 1145 .name = "virtio-gpu-one-scanout", 1146 .version_id = 1, 1147 .fields = (VMStateField[]) { 1148 VMSTATE_UINT32(resource_id, struct virtio_gpu_scanout), 1149 VMSTATE_UINT32(width, struct virtio_gpu_scanout), 1150 VMSTATE_UINT32(height, struct virtio_gpu_scanout), 1151 VMSTATE_INT32(x, struct virtio_gpu_scanout), 1152 VMSTATE_INT32(y, struct virtio_gpu_scanout), 1153 VMSTATE_UINT32(cursor.resource_id, struct virtio_gpu_scanout), 1154 VMSTATE_UINT32(cursor.hot_x, struct virtio_gpu_scanout), 1155 VMSTATE_UINT32(cursor.hot_y, struct virtio_gpu_scanout), 1156 VMSTATE_UINT32(cursor.pos.x, struct virtio_gpu_scanout), 1157 VMSTATE_UINT32(cursor.pos.y, struct virtio_gpu_scanout), 1158 VMSTATE_END_OF_LIST() 1159 }, 1160 }; 1161 1162 static const VMStateDescription vmstate_virtio_gpu_scanouts = { 1163 .name = "virtio-gpu-scanouts", 1164 .version_id = 1, 1165 .fields = (VMStateField[]) { 1166 VMSTATE_INT32(parent_obj.enable, struct VirtIOGPU), 1167 VMSTATE_UINT32_EQUAL(parent_obj.conf.max_outputs, 1168 struct VirtIOGPU, NULL), 1169 VMSTATE_STRUCT_VARRAY_UINT32(parent_obj.scanout, struct VirtIOGPU, 1170 parent_obj.conf.max_outputs, 1, 1171 vmstate_virtio_gpu_scanout, 1172 struct virtio_gpu_scanout), 1173 VMSTATE_END_OF_LIST() 1174 }, 1175 }; 1176 1177 static int virtio_gpu_save(QEMUFile *f, void *opaque, size_t size, 1178 const VMStateField *field, JSONWriter *vmdesc) 1179 { 1180 VirtIOGPU *g = opaque; 1181 struct virtio_gpu_simple_resource *res; 1182 int i; 1183 1184 /* in 2d mode we should never find unprocessed commands here */ 1185 assert(QTAILQ_EMPTY(&g->cmdq)); 1186 1187 QTAILQ_FOREACH(res, &g->reslist, next) { 1188 qemu_put_be32(f, res->resource_id); 1189 qemu_put_be32(f, res->width); 1190 qemu_put_be32(f, res->height); 1191 qemu_put_be32(f, res->format); 1192 qemu_put_be32(f, res->iov_cnt); 1193 for (i = 0; i < res->iov_cnt; i++) { 1194 qemu_put_be64(f, res->addrs[i]); 1195 qemu_put_be32(f, res->iov[i].iov_len); 1196 } 1197 qemu_put_buffer(f, (void *)pixman_image_get_data(res->image), 1198 pixman_image_get_stride(res->image) * res->height); 1199 } 1200 qemu_put_be32(f, 0); /* end of list */ 1201 1202 return vmstate_save_state(f, &vmstate_virtio_gpu_scanouts, g, NULL); 1203 } 1204 1205 static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size, 1206 const VMStateField *field) 1207 { 1208 VirtIOGPU *g = opaque; 1209 struct virtio_gpu_simple_resource *res; 1210 struct virtio_gpu_scanout *scanout; 1211 uint32_t resource_id, pformat; 1212 int i; 1213 1214 g->hostmem = 0; 1215 1216 resource_id = qemu_get_be32(f); 1217 while (resource_id != 0) { 1218 res = virtio_gpu_find_resource(g, resource_id); 1219 if (res) { 1220 return -EINVAL; 1221 } 1222 1223 res = g_new0(struct virtio_gpu_simple_resource, 1); 1224 res->resource_id = resource_id; 1225 res->width = qemu_get_be32(f); 1226 res->height = qemu_get_be32(f); 1227 res->format = qemu_get_be32(f); 1228 res->iov_cnt = qemu_get_be32(f); 1229 1230 /* allocate */ 1231 pformat = virtio_gpu_get_pixman_format(res->format); 1232 if (!pformat) { 1233 g_free(res); 1234 return -EINVAL; 1235 } 1236 res->image = pixman_image_create_bits(pformat, 1237 res->width, res->height, 1238 NULL, 0); 1239 if (!res->image) { 1240 g_free(res); 1241 return -EINVAL; 1242 } 1243 1244 res->hostmem = calc_image_hostmem(pformat, res->width, res->height); 1245 1246 res->addrs = g_new(uint64_t, res->iov_cnt); 1247 res->iov = g_new(struct iovec, res->iov_cnt); 1248 1249 /* read data */ 1250 for (i = 0; i < res->iov_cnt; i++) { 1251 res->addrs[i] = qemu_get_be64(f); 1252 res->iov[i].iov_len = qemu_get_be32(f); 1253 } 1254 qemu_get_buffer(f, (void *)pixman_image_get_data(res->image), 1255 pixman_image_get_stride(res->image) * res->height); 1256 1257 /* restore mapping */ 1258 for (i = 0; i < res->iov_cnt; i++) { 1259 hwaddr len = res->iov[i].iov_len; 1260 res->iov[i].iov_base = 1261 dma_memory_map(VIRTIO_DEVICE(g)->dma_as, res->addrs[i], &len, 1262 DMA_DIRECTION_TO_DEVICE, 1263 MEMTXATTRS_UNSPECIFIED); 1264 1265 if (!res->iov[i].iov_base || len != res->iov[i].iov_len) { 1266 /* Clean up the half-a-mapping we just created... */ 1267 if (res->iov[i].iov_base) { 1268 dma_memory_unmap(VIRTIO_DEVICE(g)->dma_as, 1269 res->iov[i].iov_base, 1270 len, 1271 DMA_DIRECTION_TO_DEVICE, 1272 0); 1273 } 1274 /* ...and the mappings for previous loop iterations */ 1275 res->iov_cnt = i; 1276 virtio_gpu_cleanup_mapping(g, res); 1277 pixman_image_unref(res->image); 1278 g_free(res); 1279 return -EINVAL; 1280 } 1281 } 1282 1283 QTAILQ_INSERT_HEAD(&g->reslist, res, next); 1284 g->hostmem += res->hostmem; 1285 1286 resource_id = qemu_get_be32(f); 1287 } 1288 1289 /* load & apply scanout state */ 1290 vmstate_load_state(f, &vmstate_virtio_gpu_scanouts, g, 1); 1291 for (i = 0; i < g->parent_obj.conf.max_outputs; i++) { 1292 scanout = &g->parent_obj.scanout[i]; 1293 if (!scanout->resource_id) { 1294 continue; 1295 } 1296 res = virtio_gpu_find_resource(g, scanout->resource_id); 1297 if (!res) { 1298 return -EINVAL; 1299 } 1300 scanout->ds = qemu_create_displaysurface_pixman(res->image); 1301 if (!scanout->ds) { 1302 return -EINVAL; 1303 } 1304 1305 dpy_gfx_replace_surface(scanout->con, scanout->ds); 1306 dpy_gfx_update_full(scanout->con); 1307 if (scanout->cursor.resource_id) { 1308 update_cursor(g, &scanout->cursor); 1309 } 1310 res->scanout_bitmask |= (1 << i); 1311 } 1312 1313 return 0; 1314 } 1315 1316 void virtio_gpu_device_realize(DeviceState *qdev, Error **errp) 1317 { 1318 VirtIODevice *vdev = VIRTIO_DEVICE(qdev); 1319 VirtIOGPU *g = VIRTIO_GPU(qdev); 1320 1321 if (virtio_gpu_blob_enabled(g->parent_obj.conf)) { 1322 if (!virtio_gpu_have_udmabuf()) { 1323 error_setg(errp, "cannot enable blob resources without udmabuf"); 1324 return; 1325 } 1326 1327 if (virtio_gpu_virgl_enabled(g->parent_obj.conf)) { 1328 error_setg(errp, "blobs and virgl are not compatible (yet)"); 1329 return; 1330 } 1331 } 1332 1333 if (!virtio_gpu_base_device_realize(qdev, 1334 virtio_gpu_handle_ctrl_cb, 1335 virtio_gpu_handle_cursor_cb, 1336 errp)) { 1337 return; 1338 } 1339 1340 g->ctrl_vq = virtio_get_queue(vdev, 0); 1341 g->cursor_vq = virtio_get_queue(vdev, 1); 1342 g->ctrl_bh = qemu_bh_new_guarded(virtio_gpu_ctrl_bh, g, 1343 &qdev->mem_reentrancy_guard); 1344 g->cursor_bh = qemu_bh_new_guarded(virtio_gpu_cursor_bh, g, 1345 &qdev->mem_reentrancy_guard); 1346 QTAILQ_INIT(&g->reslist); 1347 QTAILQ_INIT(&g->cmdq); 1348 QTAILQ_INIT(&g->fenceq); 1349 } 1350 1351 void virtio_gpu_reset(VirtIODevice *vdev) 1352 { 1353 VirtIOGPU *g = VIRTIO_GPU(vdev); 1354 struct virtio_gpu_simple_resource *res, *tmp; 1355 struct virtio_gpu_ctrl_command *cmd; 1356 1357 QTAILQ_FOREACH_SAFE(res, &g->reslist, next, tmp) { 1358 virtio_gpu_resource_destroy(g, res); 1359 } 1360 1361 while (!QTAILQ_EMPTY(&g->cmdq)) { 1362 cmd = QTAILQ_FIRST(&g->cmdq); 1363 QTAILQ_REMOVE(&g->cmdq, cmd, next); 1364 g_free(cmd); 1365 } 1366 1367 while (!QTAILQ_EMPTY(&g->fenceq)) { 1368 cmd = QTAILQ_FIRST(&g->fenceq); 1369 QTAILQ_REMOVE(&g->fenceq, cmd, next); 1370 g->inflight--; 1371 g_free(cmd); 1372 } 1373 1374 virtio_gpu_base_reset(VIRTIO_GPU_BASE(vdev)); 1375 } 1376 1377 static void 1378 virtio_gpu_get_config(VirtIODevice *vdev, uint8_t *config) 1379 { 1380 VirtIOGPUBase *g = VIRTIO_GPU_BASE(vdev); 1381 1382 memcpy(config, &g->virtio_config, sizeof(g->virtio_config)); 1383 } 1384 1385 static void 1386 virtio_gpu_set_config(VirtIODevice *vdev, const uint8_t *config) 1387 { 1388 VirtIOGPUBase *g = VIRTIO_GPU_BASE(vdev); 1389 const struct virtio_gpu_config *vgconfig = 1390 (const struct virtio_gpu_config *)config; 1391 1392 if (vgconfig->events_clear) { 1393 g->virtio_config.events_read &= ~vgconfig->events_clear; 1394 } 1395 } 1396 1397 /* 1398 * For historical reasons virtio_gpu does not adhere to virtio migration 1399 * scheme as described in doc/virtio-migration.txt, in a sense that no 1400 * save/load callback are provided to the core. Instead the device data 1401 * is saved/loaded after the core data. 1402 * 1403 * Because of this we need a special vmsd. 1404 */ 1405 static const VMStateDescription vmstate_virtio_gpu = { 1406 .name = "virtio-gpu", 1407 .minimum_version_id = VIRTIO_GPU_VM_VERSION, 1408 .version_id = VIRTIO_GPU_VM_VERSION, 1409 .fields = (VMStateField[]) { 1410 VMSTATE_VIRTIO_DEVICE /* core */, 1411 { 1412 .name = "virtio-gpu", 1413 .info = &(const VMStateInfo) { 1414 .name = "virtio-gpu", 1415 .get = virtio_gpu_load, 1416 .put = virtio_gpu_save, 1417 }, 1418 .flags = VMS_SINGLE, 1419 } /* device */, 1420 VMSTATE_END_OF_LIST() 1421 }, 1422 }; 1423 1424 static Property virtio_gpu_properties[] = { 1425 VIRTIO_GPU_BASE_PROPERTIES(VirtIOGPU, parent_obj.conf), 1426 DEFINE_PROP_SIZE("max_hostmem", VirtIOGPU, conf_max_hostmem, 1427 256 * MiB), 1428 DEFINE_PROP_BIT("blob", VirtIOGPU, parent_obj.conf.flags, 1429 VIRTIO_GPU_FLAG_BLOB_ENABLED, false), 1430 DEFINE_PROP_END_OF_LIST(), 1431 }; 1432 1433 static void virtio_gpu_class_init(ObjectClass *klass, void *data) 1434 { 1435 DeviceClass *dc = DEVICE_CLASS(klass); 1436 VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); 1437 VirtIOGPUClass *vgc = VIRTIO_GPU_CLASS(klass); 1438 VirtIOGPUBaseClass *vgbc = &vgc->parent; 1439 1440 vgc->handle_ctrl = virtio_gpu_handle_ctrl; 1441 vgc->process_cmd = virtio_gpu_simple_process_cmd; 1442 vgc->update_cursor_data = virtio_gpu_update_cursor_data; 1443 vgbc->gl_flushed = virtio_gpu_handle_gl_flushed; 1444 1445 vdc->realize = virtio_gpu_device_realize; 1446 vdc->reset = virtio_gpu_reset; 1447 vdc->get_config = virtio_gpu_get_config; 1448 vdc->set_config = virtio_gpu_set_config; 1449 1450 dc->vmsd = &vmstate_virtio_gpu; 1451 device_class_set_props(dc, virtio_gpu_properties); 1452 } 1453 1454 static const TypeInfo virtio_gpu_info = { 1455 .name = TYPE_VIRTIO_GPU, 1456 .parent = TYPE_VIRTIO_GPU_BASE, 1457 .instance_size = sizeof(VirtIOGPU), 1458 .class_size = sizeof(VirtIOGPUClass), 1459 .class_init = virtio_gpu_class_init, 1460 }; 1461 module_obj(TYPE_VIRTIO_GPU); 1462 module_kconfig(VIRTIO_GPU); 1463 1464 static void virtio_register_types(void) 1465 { 1466 type_register_static(&virtio_gpu_info); 1467 } 1468 1469 type_init(virtio_register_types) 1470