drivers/gpu/drm/nouveau/nouveau_display.c

   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 }