1 /* 2 * Virtio vhost-user GPU Device 3 * 4 * Copyright Red Hat, Inc. 2013-2018 5 * 6 * Authors: 7 * Dave Airlie <airlied@redhat.com> 8 * Gerd Hoffmann <kraxel@redhat.com> 9 * Marc-André Lureau <marcandre.lureau@redhat.com> 10 * 11 * This work is licensed under the terms of the GNU GPL, version 2 or later. 12 * See the COPYING file in the top-level directory. 13 */ 14 15 #include <virglrenderer.h> 16 #include "virgl.h" 17 18 void 19 vg_virgl_update_cursor_data(VuGpu *g, uint32_t resource_id, 20 gpointer data) 21 { 22 uint32_t width, height; 23 uint32_t *cursor; 24 25 cursor = virgl_renderer_get_cursor_data(resource_id, &width, &height); 26 g_return_if_fail(cursor != NULL); 27 g_return_if_fail(width == 64); 28 g_return_if_fail(height == 64); 29 30 memcpy(data, cursor, 64 * 64 * sizeof(uint32_t)); 31 free(cursor); 32 } 33 34 static void 35 virgl_cmd_context_create(VuGpu *g, 36 struct virtio_gpu_ctrl_command *cmd) 37 { 38 struct virtio_gpu_ctx_create cc; 39 40 VUGPU_FILL_CMD(cc); 41 42 virgl_renderer_context_create(cc.hdr.ctx_id, cc.nlen, 43 cc.debug_name); 44 } 45 46 static void 47 virgl_cmd_context_destroy(VuGpu *g, 48 struct virtio_gpu_ctrl_command *cmd) 49 { 50 struct virtio_gpu_ctx_destroy cd; 51 52 VUGPU_FILL_CMD(cd); 53 54 virgl_renderer_context_destroy(cd.hdr.ctx_id); 55 } 56 57 static void 58 virgl_cmd_create_resource_2d(VuGpu *g, 59 struct virtio_gpu_ctrl_command *cmd) 60 { 61 struct virtio_gpu_resource_create_2d c2d; 62 struct virgl_renderer_resource_create_args args; 63 64 VUGPU_FILL_CMD(c2d); 65 66 args.handle = c2d.resource_id; 67 args.target = 2; 68 args.format = c2d.format; 69 args.bind = (1 << 1); 70 args.width = c2d.width; 71 args.height = c2d.height; 72 args.depth = 1; 73 args.array_size = 1; 74 args.last_level = 0; 75 args.nr_samples = 0; 76 args.flags = VIRTIO_GPU_RESOURCE_FLAG_Y_0_TOP; 77 virgl_renderer_resource_create(&args, NULL, 0); 78 } 79 80 static void 81 virgl_cmd_create_resource_3d(VuGpu *g, 82 struct virtio_gpu_ctrl_command *cmd) 83 { 84 struct virtio_gpu_resource_create_3d c3d; 85 struct virgl_renderer_resource_create_args args; 86 87 VUGPU_FILL_CMD(c3d); 88 89 args.handle = c3d.resource_id; 90 args.target = c3d.target; 91 args.format = c3d.format; 92 args.bind = c3d.bind; 93 args.width = c3d.width; 94 args.height = c3d.height; 95 args.depth = c3d.depth; 96 args.array_size = c3d.array_size; 97 args.last_level = c3d.last_level; 98 args.nr_samples = c3d.nr_samples; 99 args.flags = c3d.flags; 100 virgl_renderer_resource_create(&args, NULL, 0); 101 } 102 103 static void 104 virgl_cmd_resource_unref(VuGpu *g, 105 struct virtio_gpu_ctrl_command *cmd) 106 { 107 struct virtio_gpu_resource_unref unref; 108 109 VUGPU_FILL_CMD(unref); 110 111 virgl_renderer_resource_unref(unref.resource_id); 112 } 113 114 /* Not yet(?) defined in standard-headers, remove when possible */ 115 #ifndef VIRTIO_GPU_CAPSET_VIRGL2 116 #define VIRTIO_GPU_CAPSET_VIRGL2 2 117 #endif 118 119 static void 120 virgl_cmd_get_capset_info(VuGpu *g, 121 struct virtio_gpu_ctrl_command *cmd) 122 { 123 struct virtio_gpu_get_capset_info info; 124 struct virtio_gpu_resp_capset_info resp; 125 126 VUGPU_FILL_CMD(info); 127 128 if (info.capset_index == 0) { 129 resp.capset_id = VIRTIO_GPU_CAPSET_VIRGL; 130 virgl_renderer_get_cap_set(resp.capset_id, 131 &resp.capset_max_version, 132 &resp.capset_max_size); 133 } else if (info.capset_index == 1) { 134 resp.capset_id = VIRTIO_GPU_CAPSET_VIRGL2; 135 virgl_renderer_get_cap_set(resp.capset_id, 136 &resp.capset_max_version, 137 &resp.capset_max_size); 138 } else { 139 resp.capset_max_version = 0; 140 resp.capset_max_size = 0; 141 } 142 resp.hdr.type = VIRTIO_GPU_RESP_OK_CAPSET_INFO; 143 vg_ctrl_response(g, cmd, &resp.hdr, sizeof(resp)); 144 } 145 146 uint32_t 147 vg_virgl_get_num_capsets(void) 148 { 149 uint32_t capset2_max_ver, capset2_max_size; 150 virgl_renderer_get_cap_set(VIRTIO_GPU_CAPSET_VIRGL2, 151 &capset2_max_ver, 152 &capset2_max_size); 153 154 return capset2_max_ver ? 2 : 1; 155 } 156 157 static void 158 virgl_cmd_get_capset(VuGpu *g, 159 struct virtio_gpu_ctrl_command *cmd) 160 { 161 struct virtio_gpu_get_capset gc; 162 struct virtio_gpu_resp_capset *resp; 163 uint32_t max_ver, max_size; 164 165 VUGPU_FILL_CMD(gc); 166 167 virgl_renderer_get_cap_set(gc.capset_id, &max_ver, 168 &max_size); 169 resp = g_malloc0(sizeof(*resp) + max_size); 170 171 resp->hdr.type = VIRTIO_GPU_RESP_OK_CAPSET; 172 virgl_renderer_fill_caps(gc.capset_id, 173 gc.capset_version, 174 (void *)resp->capset_data); 175 vg_ctrl_response(g, cmd, &resp->hdr, sizeof(*resp) + max_size); 176 g_free(resp); 177 } 178 179 static void 180 virgl_cmd_submit_3d(VuGpu *g, 181 struct virtio_gpu_ctrl_command *cmd) 182 { 183 struct virtio_gpu_cmd_submit cs; 184 void *buf; 185 size_t s; 186 187 VUGPU_FILL_CMD(cs); 188 189 buf = g_malloc(cs.size); 190 s = iov_to_buf(cmd->elem.out_sg, cmd->elem.out_num, 191 sizeof(cs), buf, cs.size); 192 if (s != cs.size) { 193 g_critical("%s: size mismatch (%zd/%d)", __func__, s, cs.size); 194 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_PARAMETER; 195 goto out; 196 } 197 198 virgl_renderer_submit_cmd(buf, cs.hdr.ctx_id, cs.size / 4); 199 200 out: 201 g_free(buf); 202 } 203 204 static void 205 virgl_cmd_transfer_to_host_2d(VuGpu *g, 206 struct virtio_gpu_ctrl_command *cmd) 207 { 208 struct virtio_gpu_transfer_to_host_2d t2d; 209 struct virtio_gpu_box box; 210 211 VUGPU_FILL_CMD(t2d); 212 213 box.x = t2d.r.x; 214 box.y = t2d.r.y; 215 box.z = 0; 216 box.w = t2d.r.width; 217 box.h = t2d.r.height; 218 box.d = 1; 219 220 virgl_renderer_transfer_write_iov(t2d.resource_id, 221 0, 222 0, 223 0, 224 0, 225 (struct virgl_box *)&box, 226 t2d.offset, NULL, 0); 227 } 228 229 static void 230 virgl_cmd_transfer_to_host_3d(VuGpu *g, 231 struct virtio_gpu_ctrl_command *cmd) 232 { 233 struct virtio_gpu_transfer_host_3d t3d; 234 235 VUGPU_FILL_CMD(t3d); 236 237 virgl_renderer_transfer_write_iov(t3d.resource_id, 238 t3d.hdr.ctx_id, 239 t3d.level, 240 t3d.stride, 241 t3d.layer_stride, 242 (struct virgl_box *)&t3d.box, 243 t3d.offset, NULL, 0); 244 } 245 246 static void 247 virgl_cmd_transfer_from_host_3d(VuGpu *g, 248 struct virtio_gpu_ctrl_command *cmd) 249 { 250 struct virtio_gpu_transfer_host_3d tf3d; 251 252 VUGPU_FILL_CMD(tf3d); 253 254 virgl_renderer_transfer_read_iov(tf3d.resource_id, 255 tf3d.hdr.ctx_id, 256 tf3d.level, 257 tf3d.stride, 258 tf3d.layer_stride, 259 (struct virgl_box *)&tf3d.box, 260 tf3d.offset, NULL, 0); 261 } 262 263 static void 264 virgl_resource_attach_backing(VuGpu *g, 265 struct virtio_gpu_ctrl_command *cmd) 266 { 267 struct virtio_gpu_resource_attach_backing att_rb; 268 struct iovec *res_iovs; 269 int ret; 270 271 VUGPU_FILL_CMD(att_rb); 272 273 ret = vg_create_mapping_iov(g, &att_rb, cmd, &res_iovs); 274 if (ret != 0) { 275 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; 276 return; 277 } 278 279 virgl_renderer_resource_attach_iov(att_rb.resource_id, 280 res_iovs, att_rb.nr_entries); 281 } 282 283 static void 284 virgl_resource_detach_backing(VuGpu *g, 285 struct virtio_gpu_ctrl_command *cmd) 286 { 287 struct virtio_gpu_resource_detach_backing detach_rb; 288 struct iovec *res_iovs = NULL; 289 int num_iovs = 0; 290 291 VUGPU_FILL_CMD(detach_rb); 292 293 virgl_renderer_resource_detach_iov(detach_rb.resource_id, 294 &res_iovs, 295 &num_iovs); 296 if (res_iovs == NULL || num_iovs == 0) { 297 return; 298 } 299 g_free(res_iovs); 300 } 301 302 static void 303 virgl_cmd_set_scanout(VuGpu *g, 304 struct virtio_gpu_ctrl_command *cmd) 305 { 306 struct virtio_gpu_set_scanout ss; 307 struct virgl_renderer_resource_info info; 308 int ret; 309 310 VUGPU_FILL_CMD(ss); 311 312 if (ss.scanout_id >= VIRTIO_GPU_MAX_SCANOUTS) { 313 g_critical("%s: illegal scanout id specified %d", 314 __func__, ss.scanout_id); 315 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_SCANOUT_ID; 316 return; 317 } 318 319 memset(&info, 0, sizeof(info)); 320 321 if (ss.resource_id && ss.r.width && ss.r.height) { 322 ret = virgl_renderer_resource_get_info(ss.resource_id, &info); 323 if (ret == -1) { 324 g_critical("%s: illegal resource specified %d\n", 325 __func__, ss.resource_id); 326 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 327 return; 328 } 329 330 int fd = -1; 331 if (virgl_renderer_get_fd_for_texture(info.tex_id, &fd) < 0) { 332 g_critical("%s: failed to get fd for texture\n", __func__); 333 cmd->error = VIRTIO_GPU_RESP_ERR_INVALID_RESOURCE_ID; 334 return; 335 } 336 assert(fd >= 0); 337 VhostUserGpuMsg msg = { 338 .request = VHOST_USER_GPU_DMABUF_SCANOUT, 339 .size = sizeof(VhostUserGpuDMABUFScanout), 340 .payload.dmabuf_scanout.scanout_id = ss.scanout_id, 341 .payload.dmabuf_scanout.x = ss.r.x, 342 .payload.dmabuf_scanout.y = ss.r.y, 343 .payload.dmabuf_scanout.width = ss.r.width, 344 .payload.dmabuf_scanout.height = ss.r.height, 345 .payload.dmabuf_scanout.fd_width = info.width, 346 .payload.dmabuf_scanout.fd_height = info.height, 347 .payload.dmabuf_scanout.fd_stride = info.stride, 348 .payload.dmabuf_scanout.fd_flags = info.flags, 349 .payload.dmabuf_scanout.fd_drm_fourcc = info.drm_fourcc 350 }; 351 vg_send_msg(g, &msg, fd); 352 close(fd); 353 } else { 354 VhostUserGpuMsg msg = { 355 .request = VHOST_USER_GPU_DMABUF_SCANOUT, 356 .size = sizeof(VhostUserGpuDMABUFScanout), 357 .payload.dmabuf_scanout.scanout_id = ss.scanout_id, 358 }; 359 g_debug("disable scanout"); 360 vg_send_msg(g, &msg, -1); 361 } 362 g->scanout[ss.scanout_id].resource_id = ss.resource_id; 363 } 364 365 static void 366 virgl_cmd_resource_flush(VuGpu *g, 367 struct virtio_gpu_ctrl_command *cmd) 368 { 369 struct virtio_gpu_resource_flush rf; 370 int i; 371 372 VUGPU_FILL_CMD(rf); 373 374 if (!rf.resource_id) { 375 g_debug("bad resource id for flush..?"); 376 return; 377 } 378 for (i = 0; i < VIRTIO_GPU_MAX_SCANOUTS; i++) { 379 if (g->scanout[i].resource_id != rf.resource_id) { 380 continue; 381 } 382 VhostUserGpuMsg msg = { 383 .request = VHOST_USER_GPU_DMABUF_UPDATE, 384 .size = sizeof(VhostUserGpuUpdate), 385 .payload.update.scanout_id = i, 386 .payload.update.x = rf.r.x, 387 .payload.update.y = rf.r.y, 388 .payload.update.width = rf.r.width, 389 .payload.update.height = rf.r.height 390 }; 391 vg_send_msg(g, &msg, -1); 392 vg_wait_ok(g); 393 } 394 } 395 396 static void 397 virgl_cmd_ctx_attach_resource(VuGpu *g, 398 struct virtio_gpu_ctrl_command *cmd) 399 { 400 struct virtio_gpu_ctx_resource att_res; 401 402 VUGPU_FILL_CMD(att_res); 403 404 virgl_renderer_ctx_attach_resource(att_res.hdr.ctx_id, att_res.resource_id); 405 } 406 407 static void 408 virgl_cmd_ctx_detach_resource(VuGpu *g, 409 struct virtio_gpu_ctrl_command *cmd) 410 { 411 struct virtio_gpu_ctx_resource det_res; 412 413 VUGPU_FILL_CMD(det_res); 414 415 virgl_renderer_ctx_detach_resource(det_res.hdr.ctx_id, det_res.resource_id); 416 } 417 418 void vg_virgl_process_cmd(VuGpu *g, struct virtio_gpu_ctrl_command *cmd) 419 { 420 virgl_renderer_force_ctx_0(); 421 switch (cmd->cmd_hdr.type) { 422 case VIRTIO_GPU_CMD_CTX_CREATE: 423 virgl_cmd_context_create(g, cmd); 424 break; 425 case VIRTIO_GPU_CMD_CTX_DESTROY: 426 virgl_cmd_context_destroy(g, cmd); 427 break; 428 case VIRTIO_GPU_CMD_RESOURCE_CREATE_2D: 429 virgl_cmd_create_resource_2d(g, cmd); 430 break; 431 case VIRTIO_GPU_CMD_RESOURCE_CREATE_3D: 432 virgl_cmd_create_resource_3d(g, cmd); 433 break; 434 case VIRTIO_GPU_CMD_SUBMIT_3D: 435 virgl_cmd_submit_3d(g, cmd); 436 break; 437 case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D: 438 virgl_cmd_transfer_to_host_2d(g, cmd); 439 break; 440 case VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D: 441 virgl_cmd_transfer_to_host_3d(g, cmd); 442 break; 443 case VIRTIO_GPU_CMD_TRANSFER_FROM_HOST_3D: 444 virgl_cmd_transfer_from_host_3d(g, cmd); 445 break; 446 case VIRTIO_GPU_CMD_RESOURCE_ATTACH_BACKING: 447 virgl_resource_attach_backing(g, cmd); 448 break; 449 case VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING: 450 virgl_resource_detach_backing(g, cmd); 451 break; 452 case VIRTIO_GPU_CMD_SET_SCANOUT: 453 virgl_cmd_set_scanout(g, cmd); 454 break; 455 case VIRTIO_GPU_CMD_RESOURCE_FLUSH: 456 virgl_cmd_resource_flush(g, cmd); 457 break; 458 case VIRTIO_GPU_CMD_RESOURCE_UNREF: 459 virgl_cmd_resource_unref(g, cmd); 460 break; 461 case VIRTIO_GPU_CMD_CTX_ATTACH_RESOURCE: 462 /* TODO add security */ 463 virgl_cmd_ctx_attach_resource(g, cmd); 464 break; 465 case VIRTIO_GPU_CMD_CTX_DETACH_RESOURCE: 466 /* TODO add security */ 467 virgl_cmd_ctx_detach_resource(g, cmd); 468 break; 469 case VIRTIO_GPU_CMD_GET_CAPSET_INFO: 470 virgl_cmd_get_capset_info(g, cmd); 471 break; 472 case VIRTIO_GPU_CMD_GET_CAPSET: 473 virgl_cmd_get_capset(g, cmd); 474 break; 475 case VIRTIO_GPU_CMD_GET_DISPLAY_INFO: 476 vg_get_display_info(g, cmd); 477 break; 478 default: 479 g_debug("TODO handle ctrl %x\n", cmd->cmd_hdr.type); 480 cmd->error = VIRTIO_GPU_RESP_ERR_UNSPEC; 481 break; 482 } 483 484 if (cmd->finished) { 485 return; 486 } 487 488 if (cmd->error) { 489 g_warning("%s: ctrl 0x%x, error 0x%x\n", __func__, 490 cmd->cmd_hdr.type, cmd->error); 491 vg_ctrl_response_nodata(g, cmd, cmd->error); 492 return; 493 } 494 495 if (!(cmd->cmd_hdr.flags & VIRTIO_GPU_FLAG_FENCE)) { 496 vg_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA); 497 return; 498 } 499 500 g_debug("Creating fence id:%" PRId64 " type:%d", 501 cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type); 502 virgl_renderer_create_fence(cmd->cmd_hdr.fence_id, cmd->cmd_hdr.type); 503 } 504 505 static void 506 virgl_write_fence(void *opaque, uint32_t fence) 507 { 508 VuGpu *g = opaque; 509 struct virtio_gpu_ctrl_command *cmd, *tmp; 510 511 QTAILQ_FOREACH_SAFE(cmd, &g->fenceq, next, tmp) { 512 /* 513 * the guest can end up emitting fences out of order 514 * so we should check all fenced cmds not just the first one. 515 */ 516 if (cmd->cmd_hdr.fence_id > fence) { 517 continue; 518 } 519 g_debug("FENCE %" PRIu64, cmd->cmd_hdr.fence_id); 520 vg_ctrl_response_nodata(g, cmd, VIRTIO_GPU_RESP_OK_NODATA); 521 QTAILQ_REMOVE(&g->fenceq, cmd, next); 522 g_free(cmd); 523 g->inflight--; 524 } 525 } 526 527 #if defined(VIRGL_RENDERER_CALLBACKS_VERSION) && \ 528 VIRGL_RENDERER_CALLBACKS_VERSION >= 2 529 static int 530 virgl_get_drm_fd(void *opaque) 531 { 532 VuGpu *g = opaque; 533 534 return g->drm_rnode_fd; 535 } 536 #endif 537 538 static struct virgl_renderer_callbacks virgl_cbs = { 539 #if defined(VIRGL_RENDERER_CALLBACKS_VERSION) && \ 540 VIRGL_RENDERER_CALLBACKS_VERSION >= 2 541 .get_drm_fd = virgl_get_drm_fd, 542 .version = 2, 543 #else 544 .version = 1, 545 #endif 546 .write_fence = virgl_write_fence, 547 }; 548 549 static void 550 vg_virgl_poll(VuDev *dev, int condition, void *data) 551 { 552 virgl_renderer_poll(); 553 } 554 555 bool 556 vg_virgl_init(VuGpu *g) 557 { 558 int ret; 559 560 if (g->drm_rnode_fd && virgl_cbs.version == 1) { 561 g_warning("virgl will use the default rendernode"); 562 } 563 564 ret = virgl_renderer_init(g, 565 VIRGL_RENDERER_USE_EGL | 566 VIRGL_RENDERER_THREAD_SYNC, 567 &virgl_cbs); 568 if (ret != 0) { 569 return false; 570 } 571 572 ret = virgl_renderer_get_poll_fd(); 573 if (ret != -1) { 574 g->renderer_source = 575 vug_source_new(&g->dev, ret, G_IO_IN, vg_virgl_poll, g); 576 } 577 578 return true; 579 } 580