1 /* 2 * Copyright (C) 2008 Maarten Maathuis. 3 * All Rights Reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person obtaining 6 * a copy of this software and associated documentation files (the 7 * "Software"), to deal in the Software without restriction, including 8 * without limitation the rights to use, copy, modify, merge, publish, 9 * distribute, sublicense, and/or sell copies of the Software, and to 10 * permit persons to whom the Software is furnished to do so, subject to 11 * the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the 14 * next paragraph) shall be included in all copies or substantial 15 * portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 24 * 25 */ 26 27 #include <acpi/video.h> 28 #include <drm/drmP.h> 29 #include <drm/drm_atomic.h> 30 #include <drm/drm_atomic_helper.h> 31 #include <drm/drm_crtc_helper.h> 32 #include <drm/drm_fb_helper.h> 33 #include <drm/drm_probe_helper.h> 34 35 #include "nouveau_fbcon.h" 36 #include "nouveau_crtc.h" 37 #include "nouveau_gem.h" 38 #include "nouveau_connector.h" 39 #include "nv50_display.h" 40 41 #include <nvif/class.h> 42 #include <nvif/cl0046.h> 43 #include <nvif/event.h> 44 45 static int 46 nouveau_display_vblank_handler(struct nvif_notify *notify) 47 { 48 struct nouveau_crtc *nv_crtc = 49 container_of(notify, typeof(*nv_crtc), vblank); 50 drm_crtc_handle_vblank(&nv_crtc->base); 51 return NVIF_NOTIFY_KEEP; 52 } 53 54 int 55 nouveau_display_vblank_enable(struct drm_device *dev, unsigned int pipe) 56 { 57 struct drm_crtc *crtc; 58 struct nouveau_crtc *nv_crtc; 59 60 crtc = drm_crtc_from_index(dev, pipe); 61 if (!crtc) 62 return -EINVAL; 63 64 nv_crtc = nouveau_crtc(crtc); 65 nvif_notify_get(&nv_crtc->vblank); 66 67 return 0; 68 } 69 70 void 71 nouveau_display_vblank_disable(struct drm_device *dev, unsigned int pipe) 72 { 73 struct drm_crtc *crtc; 74 struct nouveau_crtc *nv_crtc; 75 76 crtc = drm_crtc_from_index(dev, pipe); 77 if (!crtc) 78 return; 79 80 nv_crtc = nouveau_crtc(crtc); 81 nvif_notify_put(&nv_crtc->vblank); 82 } 83 84 static inline int 85 calc(int blanks, int blanke, int total, int line) 86 { 87 if (blanke >= blanks) { 88 if (line >= blanks) 89 line -= total; 90 } else { 91 if (line >= blanks) 92 line -= total; 93 line -= blanke + 1; 94 } 95 return line; 96 } 97 98 static bool 99 nouveau_display_scanoutpos_head(struct drm_crtc *crtc, int *vpos, int *hpos, 100 ktime_t *stime, ktime_t *etime) 101 { 102 struct { 103 struct nv04_disp_mthd_v0 base; 104 struct nv04_disp_scanoutpos_v0 scan; 105 } args = { 106 .base.method = NV04_DISP_SCANOUTPOS, 107 .base.head = nouveau_crtc(crtc)->index, 108 }; 109 struct nouveau_display *disp = nouveau_display(crtc->dev); 110 struct drm_vblank_crtc *vblank = &crtc->dev->vblank[drm_crtc_index(crtc)]; 111 int retry = 20; 112 bool ret = false; 113 114 do { 115 ret = nvif_mthd(&disp->disp.object, 0, &args, sizeof(args)); 116 if (ret != 0) 117 return false; 118 119 if (args.scan.vline) { 120 ret = true; 121 break; 122 } 123 124 if (retry) ndelay(vblank->linedur_ns); 125 } while (retry--); 126 127 *hpos = args.scan.hline; 128 *vpos = calc(args.scan.vblanks, args.scan.vblanke, 129 args.scan.vtotal, args.scan.vline); 130 if (stime) *stime = ns_to_ktime(args.scan.time[0]); 131 if (etime) *etime = ns_to_ktime(args.scan.time[1]); 132 133 return ret; 134 } 135 136 bool 137 nouveau_display_scanoutpos(struct drm_device *dev, unsigned int pipe, 138 bool in_vblank_irq, int *vpos, int *hpos, 139 ktime_t *stime, ktime_t *etime, 140 const struct drm_display_mode *mode) 141 { 142 struct drm_crtc *crtc; 143 144 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 145 if (nouveau_crtc(crtc)->index == pipe) { 146 return nouveau_display_scanoutpos_head(crtc, vpos, hpos, 147 stime, etime); 148 } 149 } 150 151 return false; 152 } 153 154 static void 155 nouveau_display_vblank_fini(struct drm_device *dev) 156 { 157 struct drm_crtc *crtc; 158 159 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 160 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc); 161 nvif_notify_fini(&nv_crtc->vblank); 162 } 163 } 164 165 static int 166 nouveau_display_vblank_init(struct drm_device *dev) 167 { 168 struct nouveau_display *disp = nouveau_display(dev); 169 struct drm_crtc *crtc; 170 int ret; 171 172 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 173 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc); 174 ret = nvif_notify_init(&disp->disp.object, 175 nouveau_display_vblank_handler, false, 176 NV04_DISP_NTFY_VBLANK, 177 &(struct nvif_notify_head_req_v0) { 178 .head = nv_crtc->index, 179 }, 180 sizeof(struct nvif_notify_head_req_v0), 181 sizeof(struct nvif_notify_head_rep_v0), 182 &nv_crtc->vblank); 183 if (ret) { 184 nouveau_display_vblank_fini(dev); 185 return ret; 186 } 187 } 188 189 ret = drm_vblank_init(dev, dev->mode_config.num_crtc); 190 if (ret) { 191 nouveau_display_vblank_fini(dev); 192 return ret; 193 } 194 195 return 0; 196 } 197 198 static void 199 nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb) 200 { 201 struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb); 202 203 if (fb->nvbo) 204 drm_gem_object_put_unlocked(&fb->nvbo->gem); 205 206 drm_framebuffer_cleanup(drm_fb); 207 kfree(fb); 208 } 209 210 static int 211 nouveau_user_framebuffer_create_handle(struct drm_framebuffer *drm_fb, 212 struct drm_file *file_priv, 213 unsigned int *handle) 214 { 215 struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb); 216 217 return drm_gem_handle_create(file_priv, &fb->nvbo->gem, handle); 218 } 219 220 static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = { 221 .destroy = nouveau_user_framebuffer_destroy, 222 .create_handle = nouveau_user_framebuffer_create_handle, 223 }; 224 225 int 226 nouveau_framebuffer_new(struct drm_device *dev, 227 const struct drm_mode_fb_cmd2 *mode_cmd, 228 struct nouveau_bo *nvbo, 229 struct nouveau_framebuffer **pfb) 230 { 231 struct nouveau_drm *drm = nouveau_drm(dev); 232 struct nouveau_framebuffer *fb; 233 int ret; 234 235 /* YUV overlays have special requirements pre-NV50 */ 236 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA && 237 238 (mode_cmd->pixel_format == DRM_FORMAT_YUYV || 239 mode_cmd->pixel_format == DRM_FORMAT_UYVY || 240 mode_cmd->pixel_format == DRM_FORMAT_NV12 || 241 mode_cmd->pixel_format == DRM_FORMAT_NV21) && 242 (mode_cmd->pitches[0] & 0x3f || /* align 64 */ 243 mode_cmd->pitches[0] >= 0x10000 || /* at most 64k pitch */ 244 (mode_cmd->pitches[1] && /* pitches for planes must match */ 245 mode_cmd->pitches[0] != mode_cmd->pitches[1]))) { 246 struct drm_format_name_buf format_name; 247 DRM_DEBUG_KMS("Unsuitable framebuffer: format: %s; pitches: 0x%x\n 0x%x\n", 248 drm_get_format_name(mode_cmd->pixel_format, 249 &format_name), 250 mode_cmd->pitches[0], 251 mode_cmd->pitches[1]); 252 return -EINVAL; 253 } 254 255 if (!(fb = *pfb = kzalloc(sizeof(*fb), GFP_KERNEL))) 256 return -ENOMEM; 257 258 drm_helper_mode_fill_fb_struct(dev, &fb->base, mode_cmd); 259 fb->nvbo = nvbo; 260 261 ret = drm_framebuffer_init(dev, &fb->base, &nouveau_framebuffer_funcs); 262 if (ret) 263 kfree(fb); 264 return ret; 265 } 266 267 struct drm_framebuffer * 268 nouveau_user_framebuffer_create(struct drm_device *dev, 269 struct drm_file *file_priv, 270 const struct drm_mode_fb_cmd2 *mode_cmd) 271 { 272 struct nouveau_framebuffer *fb; 273 struct nouveau_bo *nvbo; 274 struct drm_gem_object *gem; 275 int ret; 276 277 gem = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]); 278 if (!gem) 279 return ERR_PTR(-ENOENT); 280 nvbo = nouveau_gem_object(gem); 281 282 ret = nouveau_framebuffer_new(dev, mode_cmd, nvbo, &fb); 283 if (ret == 0) 284 return &fb->base; 285 286 drm_gem_object_put_unlocked(gem); 287 return ERR_PTR(ret); 288 } 289 290 static const struct drm_mode_config_funcs nouveau_mode_config_funcs = { 291 .fb_create = nouveau_user_framebuffer_create, 292 .output_poll_changed = nouveau_fbcon_output_poll_changed, 293 }; 294 295 296 struct nouveau_drm_prop_enum_list { 297 u8 gen_mask; 298 int type; 299 char *name; 300 }; 301 302 static struct nouveau_drm_prop_enum_list underscan[] = { 303 { 6, UNDERSCAN_AUTO, "auto" }, 304 { 6, UNDERSCAN_OFF, "off" }, 305 { 6, UNDERSCAN_ON, "on" }, 306 {} 307 }; 308 309 static struct nouveau_drm_prop_enum_list dither_mode[] = { 310 { 7, DITHERING_MODE_AUTO, "auto" }, 311 { 7, DITHERING_MODE_OFF, "off" }, 312 { 1, DITHERING_MODE_ON, "on" }, 313 { 6, DITHERING_MODE_STATIC2X2, "static 2x2" }, 314 { 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" }, 315 { 4, DITHERING_MODE_TEMPORAL, "temporal" }, 316 {} 317 }; 318 319 static struct nouveau_drm_prop_enum_list dither_depth[] = { 320 { 6, DITHERING_DEPTH_AUTO, "auto" }, 321 { 6, DITHERING_DEPTH_6BPC, "6 bpc" }, 322 { 6, DITHERING_DEPTH_8BPC, "8 bpc" }, 323 {} 324 }; 325 326 #define PROP_ENUM(p,gen,n,list) do { \ 327 struct nouveau_drm_prop_enum_list *l = (list); \ 328 int c = 0; \ 329 while (l->gen_mask) { \ 330 if (l->gen_mask & (1 << (gen))) \ 331 c++; \ 332 l++; \ 333 } \ 334 if (c) { \ 335 p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c); \ 336 l = (list); \ 337 while (p && l->gen_mask) { \ 338 if (l->gen_mask & (1 << (gen))) { \ 339 drm_property_add_enum(p, l->type, l->name); \ 340 } \ 341 l++; \ 342 } \ 343 } \ 344 } while(0) 345 346 static void 347 nouveau_display_hpd_work(struct work_struct *work) 348 { 349 struct nouveau_drm *drm = container_of(work, typeof(*drm), hpd_work); 350 351 pm_runtime_get_sync(drm->dev->dev); 352 353 drm_helper_hpd_irq_event(drm->dev); 354 355 pm_runtime_mark_last_busy(drm->dev->dev); 356 pm_runtime_put_sync(drm->dev->dev); 357 } 358 359 #ifdef CONFIG_ACPI 360 361 /* 362 * Hans de Goede: This define belongs in acpi/video.h, I've submitted a patch 363 * to the acpi subsys to move it there from drivers/acpi/acpi_video.c . 364 * This should be dropped once that is merged. 365 */ 366 #ifndef ACPI_VIDEO_NOTIFY_PROBE 367 #define ACPI_VIDEO_NOTIFY_PROBE 0x81 368 #endif 369 370 static int 371 nouveau_display_acpi_ntfy(struct notifier_block *nb, unsigned long val, 372 void *data) 373 { 374 struct nouveau_drm *drm = container_of(nb, typeof(*drm), acpi_nb); 375 struct acpi_bus_event *info = data; 376 int ret; 377 378 if (!strcmp(info->device_class, ACPI_VIDEO_CLASS)) { 379 if (info->type == ACPI_VIDEO_NOTIFY_PROBE) { 380 ret = pm_runtime_get(drm->dev->dev); 381 if (ret == 1 || ret == -EACCES) { 382 /* If the GPU is already awake, or in a state 383 * where we can't wake it up, it can handle 384 * it's own hotplug events. 385 */ 386 pm_runtime_put_autosuspend(drm->dev->dev); 387 } else if (ret == 0) { 388 /* This may be the only indication we receive 389 * of a connector hotplug on a runtime 390 * suspended GPU, schedule hpd_work to check. 391 */ 392 NV_DEBUG(drm, "ACPI requested connector reprobe\n"); 393 schedule_work(&drm->hpd_work); 394 pm_runtime_put_noidle(drm->dev->dev); 395 } else { 396 NV_WARN(drm, "Dropped ACPI reprobe event due to RPM error: %d\n", 397 ret); 398 } 399 400 /* acpi-video should not generate keypresses for this */ 401 return NOTIFY_BAD; 402 } 403 } 404 405 return NOTIFY_DONE; 406 } 407 #endif 408 409 int 410 nouveau_display_init(struct drm_device *dev, bool resume, bool runtime) 411 { 412 struct nouveau_display *disp = nouveau_display(dev); 413 struct drm_connector *connector; 414 struct drm_connector_list_iter conn_iter; 415 int ret; 416 417 ret = disp->init(dev, resume, runtime); 418 if (ret) 419 return ret; 420 421 /* enable connector detection and polling for connectors without HPD 422 * support 423 */ 424 drm_kms_helper_poll_enable(dev); 425 426 /* enable hotplug interrupts */ 427 drm_connector_list_iter_begin(dev, &conn_iter); 428 nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) { 429 struct nouveau_connector *conn = nouveau_connector(connector); 430 nvif_notify_get(&conn->hpd); 431 } 432 drm_connector_list_iter_end(&conn_iter); 433 434 return ret; 435 } 436 437 void 438 nouveau_display_fini(struct drm_device *dev, bool suspend, bool runtime) 439 { 440 struct nouveau_display *disp = nouveau_display(dev); 441 struct nouveau_drm *drm = nouveau_drm(dev); 442 struct drm_connector *connector; 443 struct drm_connector_list_iter conn_iter; 444 445 if (!suspend) { 446 if (drm_drv_uses_atomic_modeset(dev)) 447 drm_atomic_helper_shutdown(dev); 448 else 449 drm_helper_force_disable_all(dev); 450 } 451 452 /* disable hotplug interrupts */ 453 drm_connector_list_iter_begin(dev, &conn_iter); 454 nouveau_for_each_non_mst_connector_iter(connector, &conn_iter) { 455 struct nouveau_connector *conn = nouveau_connector(connector); 456 nvif_notify_put(&conn->hpd); 457 } 458 drm_connector_list_iter_end(&conn_iter); 459 460 if (!runtime) 461 cancel_work_sync(&drm->hpd_work); 462 463 drm_kms_helper_poll_disable(dev); 464 disp->fini(dev, suspend); 465 } 466 467 static void 468 nouveau_display_create_properties(struct drm_device *dev) 469 { 470 struct nouveau_display *disp = nouveau_display(dev); 471 int gen; 472 473 if (disp->disp.object.oclass < NV50_DISP) 474 gen = 0; 475 else 476 if (disp->disp.object.oclass < GF110_DISP) 477 gen = 1; 478 else 479 gen = 2; 480 481 PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode); 482 PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth); 483 PROP_ENUM(disp->underscan_property, gen, "underscan", underscan); 484 485 disp->underscan_hborder_property = 486 drm_property_create_range(dev, 0, "underscan hborder", 0, 128); 487 488 disp->underscan_vborder_property = 489 drm_property_create_range(dev, 0, "underscan vborder", 0, 128); 490 491 if (gen < 1) 492 return; 493 494 /* -90..+90 */ 495 disp->vibrant_hue_property = 496 drm_property_create_range(dev, 0, "vibrant hue", 0, 180); 497 498 /* -100..+100 */ 499 disp->color_vibrance_property = 500 drm_property_create_range(dev, 0, "color vibrance", 0, 200); 501 } 502 503 int 504 nouveau_display_create(struct drm_device *dev) 505 { 506 struct nouveau_drm *drm = nouveau_drm(dev); 507 struct nvkm_device *device = nvxx_device(&drm->client.device); 508 struct nouveau_display *disp; 509 int ret; 510 511 disp = drm->display = kzalloc(sizeof(*disp), GFP_KERNEL); 512 if (!disp) 513 return -ENOMEM; 514 515 drm_mode_config_init(dev); 516 drm_mode_create_scaling_mode_property(dev); 517 drm_mode_create_dvi_i_properties(dev); 518 519 dev->mode_config.funcs = &nouveau_mode_config_funcs; 520 dev->mode_config.fb_base = device->func->resource_addr(device, 1); 521 522 dev->mode_config.min_width = 0; 523 dev->mode_config.min_height = 0; 524 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_CELSIUS) { 525 dev->mode_config.max_width = 2048; 526 dev->mode_config.max_height = 2048; 527 } else 528 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) { 529 dev->mode_config.max_width = 4096; 530 dev->mode_config.max_height = 4096; 531 } else 532 if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI) { 533 dev->mode_config.max_width = 8192; 534 dev->mode_config.max_height = 8192; 535 } else { 536 dev->mode_config.max_width = 16384; 537 dev->mode_config.max_height = 16384; 538 } 539 540 dev->mode_config.preferred_depth = 24; 541 dev->mode_config.prefer_shadow = 1; 542 543 if (drm->client.device.info.chipset < 0x11) 544 dev->mode_config.async_page_flip = false; 545 else 546 dev->mode_config.async_page_flip = true; 547 548 drm_kms_helper_poll_init(dev); 549 drm_kms_helper_poll_disable(dev); 550 551 if (nouveau_modeset != 2 && drm->vbios.dcb.entries) { 552 ret = nvif_disp_ctor(&drm->client.device, 0, &disp->disp); 553 if (ret == 0) { 554 nouveau_display_create_properties(dev); 555 if (disp->disp.object.oclass < NV50_DISP) 556 ret = nv04_display_create(dev); 557 else 558 ret = nv50_display_create(dev); 559 } 560 } else { 561 ret = 0; 562 } 563 564 if (ret) 565 goto disp_create_err; 566 567 drm_mode_config_reset(dev); 568 569 if (dev->mode_config.num_crtc) { 570 ret = nouveau_display_vblank_init(dev); 571 if (ret) 572 goto vblank_err; 573 } 574 575 INIT_WORK(&drm->hpd_work, nouveau_display_hpd_work); 576 #ifdef CONFIG_ACPI 577 drm->acpi_nb.notifier_call = nouveau_display_acpi_ntfy; 578 register_acpi_notifier(&drm->acpi_nb); 579 #endif 580 581 return 0; 582 583 vblank_err: 584 disp->dtor(dev); 585 disp_create_err: 586 drm_kms_helper_poll_fini(dev); 587 drm_mode_config_cleanup(dev); 588 return ret; 589 } 590 591 void 592 nouveau_display_destroy(struct drm_device *dev) 593 { 594 struct nouveau_display *disp = nouveau_display(dev); 595 596 #ifdef CONFIG_ACPI 597 unregister_acpi_notifier(&nouveau_drm(dev)->acpi_nb); 598 #endif 599 nouveau_display_vblank_fini(dev); 600 601 drm_kms_helper_poll_fini(dev); 602 drm_mode_config_cleanup(dev); 603 604 if (disp->dtor) 605 disp->dtor(dev); 606 607 nvif_disp_dtor(&disp->disp); 608 609 nouveau_drm(dev)->display = NULL; 610 kfree(disp); 611 } 612 613 int 614 nouveau_display_suspend(struct drm_device *dev, bool runtime) 615 { 616 struct nouveau_display *disp = nouveau_display(dev); 617 618 if (drm_drv_uses_atomic_modeset(dev)) { 619 if (!runtime) { 620 disp->suspend = drm_atomic_helper_suspend(dev); 621 if (IS_ERR(disp->suspend)) { 622 int ret = PTR_ERR(disp->suspend); 623 disp->suspend = NULL; 624 return ret; 625 } 626 } 627 } 628 629 nouveau_display_fini(dev, true, runtime); 630 return 0; 631 } 632 633 void 634 nouveau_display_resume(struct drm_device *dev, bool runtime) 635 { 636 struct nouveau_display *disp = nouveau_display(dev); 637 638 nouveau_display_init(dev, true, runtime); 639 640 if (drm_drv_uses_atomic_modeset(dev)) { 641 if (disp->suspend) { 642 drm_atomic_helper_resume(dev, disp->suspend); 643 disp->suspend = NULL; 644 } 645 return; 646 } 647 } 648 649 int 650 nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev, 651 struct drm_mode_create_dumb *args) 652 { 653 struct nouveau_cli *cli = nouveau_cli(file_priv); 654 struct nouveau_bo *bo; 655 uint32_t domain; 656 int ret; 657 658 args->pitch = roundup(args->width * (args->bpp / 8), 256); 659 args->size = args->pitch * args->height; 660 args->size = roundup(args->size, PAGE_SIZE); 661 662 /* Use VRAM if there is any ; otherwise fallback to system memory */ 663 if (nouveau_drm(dev)->client.device.info.ram_size != 0) 664 domain = NOUVEAU_GEM_DOMAIN_VRAM; 665 else 666 domain = NOUVEAU_GEM_DOMAIN_GART; 667 668 ret = nouveau_gem_new(cli, args->size, 0, domain, 0, 0, &bo); 669 if (ret) 670 return ret; 671 672 ret = drm_gem_handle_create(file_priv, &bo->gem, &args->handle); 673 drm_gem_object_put_unlocked(&bo->gem); 674 return ret; 675 } 676 677 int 678 nouveau_display_dumb_map_offset(struct drm_file *file_priv, 679 struct drm_device *dev, 680 uint32_t handle, uint64_t *poffset) 681 { 682 struct drm_gem_object *gem; 683 684 gem = drm_gem_object_lookup(file_priv, handle); 685 if (gem) { 686 struct nouveau_bo *bo = nouveau_gem_object(gem); 687 *poffset = drm_vma_node_offset_addr(&bo->bo.vma_node); 688 drm_gem_object_put_unlocked(gem); 689 return 0; 690 } 691 692 return -ENOENT; 693 } 694