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
  34 #include <nvif/class.h>
  35
  36 #include "nouveau_fbcon.h"
  37 #include "dispnv04/hw.h"
  38 #include "nouveau_crtc.h"
  39 #include "nouveau_dma.h"
  40 #include "nouveau_gem.h"
  41 #include "nouveau_connector.h"
  42 #include "nv50_display.h"
  43
  44 #include "nouveau_fence.h"
  45
  46 #include <nvif/cl0046.h>
  47 #include <nvif/event.h>
  48
  49 static int
  50 nouveau_display_vblank_handler(struct nvif_notify *notify)
  51 {
  52         struct nouveau_crtc *nv_crtc =
  53                 container_of(notify, typeof(*nv_crtc), vblank);
  54         drm_crtc_handle_vblank(&nv_crtc->base);
  55         return NVIF_NOTIFY_KEEP;
  56 }
  57
  58 int
  59 nouveau_display_vblank_enable(struct drm_device *dev, unsigned int pipe)
  60 {
  61         struct drm_crtc *crtc;
  62         struct nouveau_crtc *nv_crtc;
  63
  64         crtc = drm_crtc_from_index(dev, pipe);
  65         if (!crtc)
  66                 return -EINVAL;
  67
  68         nv_crtc = nouveau_crtc(crtc);
  69         nvif_notify_get(&nv_crtc->vblank);
  70
  71         return 0;
  72 }
  73
  74 void
  75 nouveau_display_vblank_disable(struct drm_device *dev, unsigned int pipe)
  76 {
  77         struct drm_crtc *crtc;
  78         struct nouveau_crtc *nv_crtc;
  79
  80         crtc = drm_crtc_from_index(dev, pipe);
  81         if (!crtc)
  82                 return;
  83
  84         nv_crtc = nouveau_crtc(crtc);
  85         nvif_notify_put(&nv_crtc->vblank);
  86 }
  87
  88 static inline int
  89 calc(int blanks, int blanke, int total, int line)
  90 {
  91         if (blanke >= blanks) {
  92                 if (line >= blanks)
  93                         line -= total;
  94         } else {
  95                 if (line >= blanks)
  96                         line -= total;
  97                 line -= blanke + 1;
  98         }
  99         return line;
 100 }
 101
 102 static bool
 103 nouveau_display_scanoutpos_head(struct drm_crtc *crtc, int *vpos, int *hpos,
 104                                 ktime_t *stime, ktime_t *etime)
 105 {
 106         struct {
 107                 struct nv04_disp_mthd_v0 base;
 108                 struct nv04_disp_scanoutpos_v0 scan;
 109         } args = {
 110                 .base.method = NV04_DISP_SCANOUTPOS,
 111                 .base.head = nouveau_crtc(crtc)->index,
 112         };
 113         struct nouveau_display *disp = nouveau_display(crtc->dev);
 114         struct drm_vblank_crtc *vblank = &crtc->dev->vblank[drm_crtc_index(crtc)];
 115         int retry = 20;
 116         bool ret = false;
 117
 118         do {
 119                 ret = nvif_mthd(&disp->disp.object, 0, &args, sizeof(args));
 120                 if (ret != 0)
 121                         return false;
 122
 123                 if (args.scan.vline) {
 124                         ret = true;
 125                         break;
 126                 }
 127
 128                 if (retry) ndelay(vblank->linedur_ns);
 129         } while (retry--);
 130
 131         *hpos = args.scan.hline;
 132         *vpos = calc(args.scan.vblanks, args.scan.vblanke,
 133                      args.scan.vtotal, args.scan.vline);
 134         if (stime) *stime = ns_to_ktime(args.scan.time[0]);
 135         if (etime) *etime = ns_to_ktime(args.scan.time[1]);
 136
 137         return ret;
 138 }
 139
 140 bool
 141 nouveau_display_scanoutpos(struct drm_device *dev, unsigned int pipe,
 142                            bool in_vblank_irq, int *vpos, int *hpos,
 143                            ktime_t *stime, ktime_t *etime,
 144                            const struct drm_display_mode *mode)
 145 {
 146         struct drm_crtc *crtc;
 147
 148         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 149                 if (nouveau_crtc(crtc)->index == pipe) {
 150                         return nouveau_display_scanoutpos_head(crtc, vpos, hpos,
 151                                                                stime, etime);
 152                 }
 153         }
 154
 155         return false;
 156 }
 157
 158 static void
 159 nouveau_display_vblank_fini(struct drm_device *dev)
 160 {
 161         struct drm_crtc *crtc;
 162
 163         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 164                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 165                 nvif_notify_fini(&nv_crtc->vblank);
 166         }
 167 }
 168
 169 static int
 170 nouveau_display_vblank_init(struct drm_device *dev)
 171 {
 172         struct nouveau_display *disp = nouveau_display(dev);
 173         struct drm_crtc *crtc;
 174         int ret;
 175
 176         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 177                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 178                 ret = nvif_notify_init(&disp->disp.object,
 179                                        nouveau_display_vblank_handler, false,
 180                                        NV04_DISP_NTFY_VBLANK,
 181                                        &(struct nvif_notify_head_req_v0) {
 182                                         .head = nv_crtc->index,
 183                                        },
 184                                        sizeof(struct nvif_notify_head_req_v0),
 185                                        sizeof(struct nvif_notify_head_rep_v0),
 186                                        &nv_crtc->vblank);
 187                 if (ret) {
 188                         nouveau_display_vblank_fini(dev);
 189                         return ret;
 190                 }
 191         }
 192
 193         ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
 194         if (ret) {
 195                 nouveau_display_vblank_fini(dev);
 196                 return ret;
 197         }
 198
 199         return 0;
 200 }
 201
 202 static void
 203 nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb)
 204 {
 205         struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
 206
 207         if (fb->nvbo)
 208                 drm_gem_object_unreference_unlocked(&fb->nvbo->gem);
 209
 210         drm_framebuffer_cleanup(drm_fb);
 211         kfree(fb);
 212 }
 213
 214 static int
 215 nouveau_user_framebuffer_create_handle(struct drm_framebuffer *drm_fb,
 216                                        struct drm_file *file_priv,
 217                                        unsigned int *handle)
 218 {
 219         struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
 220
 221         return drm_gem_handle_create(file_priv, &fb->nvbo->gem, handle);
 222 }
 223
 224 static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
 225         .destroy = nouveau_user_framebuffer_destroy,
 226         .create_handle = nouveau_user_framebuffer_create_handle,
 227 };
 228
 229 int
 230 nouveau_framebuffer_new(struct drm_device *dev,
 231                         const struct drm_mode_fb_cmd2 *mode_cmd,
 232                         struct nouveau_bo *nvbo,
 233                         struct nouveau_framebuffer **pfb)
 234 {
 235         struct nouveau_drm *drm = nouveau_drm(dev);
 236         struct nouveau_framebuffer *fb;
 237         int ret;
 238
 239         /* YUV overlays have special requirements pre-NV50 */
 240         if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA &&
 241
 242             (mode_cmd->pixel_format == DRM_FORMAT_YUYV ||
 243              mode_cmd->pixel_format == DRM_FORMAT_UYVY ||
 244              mode_cmd->pixel_format == DRM_FORMAT_NV12 ||
 245              mode_cmd->pixel_format == DRM_FORMAT_NV21) &&
 246             (mode_cmd->pitches[0] & 0x3f || /* align 64 */
 247              mode_cmd->pitches[0] >= 0x10000 || /* at most 64k pitch */
 248              (mode_cmd->pitches[1] && /* pitches for planes must match */
 249               mode_cmd->pitches[0] != mode_cmd->pitches[1]))) {
 250                 struct drm_format_name_buf format_name;
 251                 DRM_DEBUG_KMS("Unsuitable framebuffer: format: %s; pitches: 0x%x\n 0x%x\n",
 252                               drm_get_format_name(mode_cmd->pixel_format,
 253                                                   &format_name),
 254                               mode_cmd->pitches[0],
 255                               mode_cmd->pitches[1]);
 256                 return -EINVAL;
 257         }
 258
 259         if (!(fb = *pfb = kzalloc(sizeof(*fb), GFP_KERNEL)))
 260                 return -ENOMEM;
 261
 262         drm_helper_mode_fill_fb_struct(dev, &fb->base, mode_cmd);
 263         fb->nvbo = nvbo;
 264
 265         ret = drm_framebuffer_init(dev, &fb->base, &nouveau_framebuffer_funcs);
 266         if (ret)
 267                 kfree(fb);
 268         return ret;
 269 }
 270
 271 struct drm_framebuffer *
 272 nouveau_user_framebuffer_create(struct drm_device *dev,
 273                                 struct drm_file *file_priv,
 274                                 const struct drm_mode_fb_cmd2 *mode_cmd)
 275 {
 276         struct nouveau_framebuffer *fb;
 277         struct nouveau_bo *nvbo;
 278         struct drm_gem_object *gem;
 279         int ret;
 280
 281         gem = drm_gem_object_lookup(file_priv, mode_cmd->handles[0]);
 282         if (!gem)
 283                 return ERR_PTR(-ENOENT);
 284         nvbo = nouveau_gem_object(gem);
 285
 286         ret = nouveau_framebuffer_new(dev, mode_cmd, nvbo, &fb);
 287         if (ret == 0)
 288                 return &fb->base;
 289
 290         drm_gem_object_unreference_unlocked(gem);
 291         return ERR_PTR(ret);
 292 }
 293
 294 static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
 295         .fb_create = nouveau_user_framebuffer_create,
 296         .output_poll_changed = drm_fb_helper_output_poll_changed,
 297 };
 298
 299
 300 struct nouveau_drm_prop_enum_list {
 301         u8 gen_mask;
 302         int type;
 303         char *name;
 304 };
 305
 306 static struct nouveau_drm_prop_enum_list underscan[] = {
 307         { 6, UNDERSCAN_AUTO, "auto" },
 308         { 6, UNDERSCAN_OFF, "off" },
 309         { 6, UNDERSCAN_ON, "on" },
 310         {}
 311 };
 312
 313 static struct nouveau_drm_prop_enum_list dither_mode[] = {
 314         { 7, DITHERING_MODE_AUTO, "auto" },
 315         { 7, DITHERING_MODE_OFF, "off" },
 316         { 1, DITHERING_MODE_ON, "on" },
 317         { 6, DITHERING_MODE_STATIC2X2, "static 2x2" },
 318         { 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" },
 319         { 4, DITHERING_MODE_TEMPORAL, "temporal" },
 320         {}
 321 };
 322
 323 static struct nouveau_drm_prop_enum_list dither_depth[] = {
 324         { 6, DITHERING_DEPTH_AUTO, "auto" },
 325         { 6, DITHERING_DEPTH_6BPC, "6 bpc" },
 326         { 6, DITHERING_DEPTH_8BPC, "8 bpc" },
 327         {}
 328 };
 329
 330 #define PROP_ENUM(p,gen,n,list) do {                                           \
 331         struct nouveau_drm_prop_enum_list *l = (list);                         \
 332         int c = 0;                                                             \
 333         while (l->gen_mask) {                                                  \
 334                 if (l->gen_mask & (1 << (gen)))                                \
 335                         c++;                                                   \
 336                 l++;                                                           \
 337         }                                                                      \
 338         if (c) {                                                               \
 339                 p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c);        \
 340                 l = (list);                                                    \
 341                 while (p && l->gen_mask) {                                     \
 342                         if (l->gen_mask & (1 << (gen))) {                      \
 343                                 drm_property_add_enum(p, l->type, l->name);    \
 344                         }                                                      \
 345                         l++;                                                   \
 346                 }                                                              \
 347         }                                                                      \
 348 } while(0)
 349
 350 static void
 351 nouveau_display_hpd_work(struct work_struct *work)
 352 {
 353         struct nouveau_drm *drm = container_of(work, typeof(*drm), hpd_work);
 354
 355         pm_runtime_get_sync(drm->dev->dev);
 356
 357         drm_helper_hpd_irq_event(drm->dev);
 358         /* enable polling for external displays */
 359         drm_kms_helper_poll_enable(drm->dev);
 360
 361         pm_runtime_mark_last_busy(drm->dev->dev);
 362         pm_runtime_put_sync(drm->dev->dev);
 363 }
 364
 365 #ifdef CONFIG_ACPI
 366
 367 /*
 368  * Hans de Goede: This define belongs in acpi/video.h, I've submitted a patch
 369  * to the acpi subsys to move it there from drivers/acpi/acpi_video.c .
 370  * This should be dropped once that is merged.
 371  */
 372 #ifndef ACPI_VIDEO_NOTIFY_PROBE
 373 #define ACPI_VIDEO_NOTIFY_PROBE                 0x81
 374 #endif
 375
 376 static int
 377 nouveau_display_acpi_ntfy(struct notifier_block *nb, unsigned long val,
 378                           void *data)
 379 {
 380         struct nouveau_drm *drm = container_of(nb, typeof(*drm), acpi_nb);
 381         struct acpi_bus_event *info = data;
 382
 383         if (!strcmp(info->device_class, ACPI_VIDEO_CLASS)) {
 384                 if (info->type == ACPI_VIDEO_NOTIFY_PROBE) {
 385                         /*
 386                          * This may be the only indication we receive of a
 387                          * connector hotplug on a runtime suspended GPU,
 388                          * schedule hpd_work to check.
 389                          */
 390                         schedule_work(&drm->hpd_work);
 391
 392                         /* acpi-video should not generate keypresses for this */
 393                         return NOTIFY_BAD;
 394                 }
 395         }
 396
 397         return NOTIFY_DONE;
 398 }
 399 #endif
 400
 401 int
 402 nouveau_display_init(struct drm_device *dev)
 403 {
 404         struct nouveau_display *disp = nouveau_display(dev);
 405         struct nouveau_drm *drm = nouveau_drm(dev);
 406         struct drm_connector *connector;
 407         int ret;
 408
 409         ret = disp->init(dev);
 410         if (ret)
 411                 return ret;
 412
 413         /* enable hotplug interrupts */
 414         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 415                 struct nouveau_connector *conn = nouveau_connector(connector);
 416                 nvif_notify_get(&conn->hpd);
 417         }
 418
 419         /* enable flip completion events */
 420         nvif_notify_get(&drm->flip);
 421         return ret;
 422 }
 423
 424 void
 425 nouveau_display_fini(struct drm_device *dev, bool suspend)
 426 {
 427         struct nouveau_display *disp = nouveau_display(dev);
 428         struct nouveau_drm *drm = nouveau_drm(dev);
 429         struct drm_connector *connector;
 430
 431         if (!suspend) {
 432                 if (drm_drv_uses_atomic_modeset(dev))
 433                         drm_atomic_helper_shutdown(dev);
 434                 else
 435                         drm_crtc_force_disable_all(dev);
 436         }
 437
 438         /* disable flip completion events */
 439         nvif_notify_put(&drm->flip);
 440
 441         /* disable hotplug interrupts */
 442         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 443                 struct nouveau_connector *conn = nouveau_connector(connector);
 444                 nvif_notify_put(&conn->hpd);
 445         }
 446
 447         drm_kms_helper_poll_disable(dev);
 448         disp->fini(dev);
 449 }
 450
 451 static void
 452 nouveau_display_create_properties(struct drm_device *dev)
 453 {
 454         struct nouveau_display *disp = nouveau_display(dev);
 455         int gen;
 456
 457         if (disp->disp.object.oclass < NV50_DISP)
 458                 gen = 0;
 459         else
 460         if (disp->disp.object.oclass < GF110_DISP)
 461                 gen = 1;
 462         else
 463                 gen = 2;
 464
 465         PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
 466         PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
 467         PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);
 468
 469         disp->underscan_hborder_property =
 470                 drm_property_create_range(dev, 0, "underscan hborder", 0, 128);
 471
 472         disp->underscan_vborder_property =
 473                 drm_property_create_range(dev, 0, "underscan vborder", 0, 128);
 474
 475         if (gen < 1)
 476                 return;
 477
 478         /* -90..+90 */
 479         disp->vibrant_hue_property =
 480                 drm_property_create_range(dev, 0, "vibrant hue", 0, 180);
 481
 482         /* -100..+100 */
 483         disp->color_vibrance_property =
 484                 drm_property_create_range(dev, 0, "color vibrance", 0, 200);
 485 }
 486
 487 int
 488 nouveau_display_create(struct drm_device *dev)
 489 {
 490         struct nouveau_drm *drm = nouveau_drm(dev);
 491         struct nvkm_device *device = nvxx_device(&drm->client.device);
 492         struct nouveau_display *disp;
 493         int ret;
 494
 495         disp = drm->display = kzalloc(sizeof(*disp), GFP_KERNEL);
 496         if (!disp)
 497                 return -ENOMEM;
 498
 499         drm_mode_config_init(dev);
 500         drm_mode_create_scaling_mode_property(dev);
 501         drm_mode_create_dvi_i_properties(dev);
 502
 503         dev->mode_config.funcs = &nouveau_mode_config_funcs;
 504         dev->mode_config.fb_base = device->func->resource_addr(device, 1);
 505
 506         dev->mode_config.min_width = 0;
 507         dev->mode_config.min_height = 0;
 508         if (drm->client.device.info.family < NV_DEVICE_INFO_V0_CELSIUS) {
 509                 dev->mode_config.max_width = 2048;
 510                 dev->mode_config.max_height = 2048;
 511         } else
 512         if (drm->client.device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 513                 dev->mode_config.max_width = 4096;
 514                 dev->mode_config.max_height = 4096;
 515         } else
 516         if (drm->client.device.info.family < NV_DEVICE_INFO_V0_FERMI) {
 517                 dev->mode_config.max_width = 8192;
 518                 dev->mode_config.max_height = 8192;
 519         } else {
 520                 dev->mode_config.max_width = 16384;
 521                 dev->mode_config.max_height = 16384;
 522         }
 523
 524         dev->mode_config.preferred_depth = 24;
 525         dev->mode_config.prefer_shadow = 1;
 526
 527         if (drm->client.device.info.chipset < 0x11)
 528                 dev->mode_config.async_page_flip = false;
 529         else
 530                 dev->mode_config.async_page_flip = true;
 531
 532         drm_kms_helper_poll_init(dev);
 533         drm_kms_helper_poll_disable(dev);
 534
 535         if (nouveau_modeset != 2 && drm->vbios.dcb.entries) {
 536                 ret = nvif_disp_ctor(&drm->client.device, 0, &disp->disp);
 537                 if (ret == 0) {
 538                         nouveau_display_create_properties(dev);
 539                         if (disp->disp.object.oclass < NV50_DISP)
 540                                 ret = nv04_display_create(dev);
 541                         else
 542                                 ret = nv50_display_create(dev);
 543                 }
 544         } else {
 545                 ret = 0;
 546         }
 547
 548         if (ret)
 549                 goto disp_create_err;
 550
 551         drm_mode_config_reset(dev);
 552
 553         if (dev->mode_config.num_crtc) {
 554                 ret = nouveau_display_vblank_init(dev);
 555                 if (ret)
 556                         goto vblank_err;
 557         }
 558
 559         nouveau_backlight_init(dev);
 560         INIT_WORK(&drm->hpd_work, nouveau_display_hpd_work);
 561 #ifdef CONFIG_ACPI
 562         drm->acpi_nb.notifier_call = nouveau_display_acpi_ntfy;
 563         register_acpi_notifier(&drm->acpi_nb);
 564 #endif
 565
 566         return 0;
 567
 568 vblank_err:
 569         disp->dtor(dev);
 570 disp_create_err:
 571         drm_kms_helper_poll_fini(dev);
 572         drm_mode_config_cleanup(dev);
 573         return ret;
 574 }
 575
 576 void
 577 nouveau_display_destroy(struct drm_device *dev)
 578 {
 579         struct nouveau_display *disp = nouveau_display(dev);
 580
 581 #ifdef CONFIG_ACPI
 582         unregister_acpi_notifier(&nouveau_drm(dev)->acpi_nb);
 583 #endif
 584         nouveau_backlight_exit(dev);
 585         nouveau_display_vblank_fini(dev);
 586
 587         drm_kms_helper_poll_fini(dev);
 588         drm_mode_config_cleanup(dev);
 589
 590         if (disp->dtor)
 591                 disp->dtor(dev);
 592
 593         nvif_disp_dtor(&disp->disp);
 594
 595         nouveau_drm(dev)->display = NULL;
 596         kfree(disp);
 597 }
 598
 599 int
 600 nouveau_display_suspend(struct drm_device *dev, bool runtime)
 601 {
 602         struct nouveau_display *disp = nouveau_display(dev);
 603         struct drm_crtc *crtc;
 604
 605         if (drm_drv_uses_atomic_modeset(dev)) {
 606                 if (!runtime) {
 607                         disp->suspend = drm_atomic_helper_suspend(dev);
 608                         if (IS_ERR(disp->suspend)) {
 609                                 int ret = PTR_ERR(disp->suspend);
 610                                 disp->suspend = NULL;
 611                                 return ret;
 612                         }
 613                 }
 614
 615                 nouveau_display_fini(dev, true);
 616                 return 0;
 617         }
 618
 619         nouveau_display_fini(dev, true);
 620
 621         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 622                 struct nouveau_framebuffer *nouveau_fb;
 623
 624                 nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
 625                 if (!nouveau_fb || !nouveau_fb->nvbo)
 626                         continue;
 627
 628                 nouveau_bo_unpin(nouveau_fb->nvbo);
 629         }
 630
 631         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 632                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 633                 if (nv_crtc->cursor.nvbo) {
 634                         if (nv_crtc->cursor.set_offset)
 635                                 nouveau_bo_unmap(nv_crtc->cursor.nvbo);
 636                         nouveau_bo_unpin(nv_crtc->cursor.nvbo);
 637                 }
 638         }
 639
 640         return 0;
 641 }
 642
 643 void
 644 nouveau_display_resume(struct drm_device *dev, bool runtime)
 645 {
 646         struct nouveau_display *disp = nouveau_display(dev);
 647         struct nouveau_drm *drm = nouveau_drm(dev);
 648         struct drm_crtc *crtc;
 649         int ret;
 650
 651         if (drm_drv_uses_atomic_modeset(dev)) {
 652                 nouveau_display_init(dev);
 653                 if (disp->suspend) {
 654                         drm_atomic_helper_resume(dev, disp->suspend);
 655                         disp->suspend = NULL;
 656                 }
 657                 return;
 658         }
 659
 660         /* re-pin fb/cursors */
 661         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 662                 struct nouveau_framebuffer *nouveau_fb;
 663
 664                 nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
 665                 if (!nouveau_fb || !nouveau_fb->nvbo)
 666                         continue;
 667
 668                 ret = nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM, true);
 669                 if (ret)
 670                         NV_ERROR(drm, "Could not pin framebuffer\n");
 671         }
 672
 673         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 674                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 675                 if (!nv_crtc->cursor.nvbo)
 676                         continue;
 677
 678                 ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM, true);
 679                 if (!ret && nv_crtc->cursor.set_offset)
 680                         ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
 681                 if (ret)
 682                         NV_ERROR(drm, "Could not pin/map cursor.\n");
 683         }
 684
 685         nouveau_display_init(dev);
 686
 687         /* Force CLUT to get re-loaded during modeset */
 688         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 689                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 690
 691                 nv_crtc->lut.depth = 0;
 692         }
 693
 694         /* This should ensure we don't hit a locking problem when someone
 695          * wakes us up via a connector.  We should never go into suspend
 696          * while the display is on anyways.
 697          */
 698         if (runtime)
 699                 return;
 700
 701         drm_helper_resume_force_mode(dev);
 702
 703         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 704                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 705
 706                 if (!nv_crtc->cursor.nvbo)
 707                         continue;
 708
 709                 if (nv_crtc->cursor.set_offset)
 710                         nv_crtc->cursor.set_offset(nv_crtc, nv_crtc->cursor.nvbo->bo.offset);
 711                 nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
 712                                                  nv_crtc->cursor_saved_y);
 713         }
 714 }
 715
 716 static int
 717 nouveau_page_flip_emit(struct nouveau_channel *chan,
 718                        struct nouveau_bo *old_bo,
 719                        struct nouveau_bo *new_bo,
 720                        struct nouveau_page_flip_state *s,
 721                        struct nouveau_fence **pfence)
 722 {
 723         struct nouveau_fence_chan *fctx = chan->fence;
 724         struct nouveau_drm *drm = chan->drm;
 725         struct drm_device *dev = drm->dev;
 726         unsigned long flags;
 727         int ret;
 728
 729         /* Queue it to the pending list */
 730         spin_lock_irqsave(&dev->event_lock, flags);
 731         list_add_tail(&s->head, &fctx->flip);
 732         spin_unlock_irqrestore(&dev->event_lock, flags);
 733
 734         /* Synchronize with the old framebuffer */
 735         ret = nouveau_fence_sync(old_bo, chan, false, false);
 736         if (ret)
 737                 goto fail;
 738
 739         /* Emit the pageflip */
 740         ret = RING_SPACE(chan, 2);
 741         if (ret)
 742                 goto fail;
 743
 744         BEGIN_NV04(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
 745         OUT_RING  (chan, 0x00000000);
 746         FIRE_RING (chan);
 747
 748         ret = nouveau_fence_new(chan, false, pfence);
 749         if (ret)
 750                 goto fail;
 751
 752         return 0;
 753 fail:
 754         spin_lock_irqsave(&dev->event_lock, flags);
 755         list_del(&s->head);
 756         spin_unlock_irqrestore(&dev->event_lock, flags);
 757         return ret;
 758 }
 759
 760 int
 761 nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 762                        struct drm_pending_vblank_event *event, u32 flags,
 763                        struct drm_modeset_acquire_ctx *ctx)
 764 {
 765         const int swap_interval = (flags & DRM_MODE_PAGE_FLIP_ASYNC) ? 0 : 1;
 766         struct drm_device *dev = crtc->dev;
 767         struct nouveau_drm *drm = nouveau_drm(dev);
 768         struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->primary->fb)->nvbo;
 769         struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
 770         struct nouveau_page_flip_state *s;
 771         struct nouveau_channel *chan;
 772         struct nouveau_cli *cli;
 773         struct nouveau_fence *fence;
 774         struct nv04_display *dispnv04 = nv04_display(dev);
 775         int head = nouveau_crtc(crtc)->index;
 776         int ret;
 777
 778         chan = drm->channel;
 779         if (!chan)
 780                 return -ENODEV;
 781         cli = (void *)chan->user.client;
 782
 783         s = kzalloc(sizeof(*s), GFP_KERNEL);
 784         if (!s)
 785                 return -ENOMEM;
 786
 787         if (new_bo != old_bo) {
 788                 ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM, true);
 789                 if (ret)
 790                         goto fail_free;
 791         }
 792
 793         mutex_lock(&cli->mutex);
 794         ret = ttm_bo_reserve(&new_bo->bo, true, false, NULL);
 795         if (ret)
 796                 goto fail_unpin;
 797
 798         /* synchronise rendering channel with the kernel's channel */
 799         ret = nouveau_fence_sync(new_bo, chan, false, true);
 800         if (ret) {
 801                 ttm_bo_unreserve(&new_bo->bo);
 802                 goto fail_unpin;
 803         }
 804
 805         if (new_bo != old_bo) {
 806                 ttm_bo_unreserve(&new_bo->bo);
 807
 808                 ret = ttm_bo_reserve(&old_bo->bo, true, false, NULL);
 809                 if (ret)
 810                         goto fail_unpin;
 811         }
 812
 813         /* Initialize a page flip struct */
 814         *s = (struct nouveau_page_flip_state)
 815                 { { }, event, crtc, fb->format->cpp[0] * 8, fb->pitches[0],
 816                   new_bo->bo.offset };
 817
 818         /* Keep vblanks on during flip, for the target crtc of this flip */
 819         drm_crtc_vblank_get(crtc);
 820
 821         /* Emit a page flip */
 822         if (swap_interval) {
 823                 ret = RING_SPACE(chan, 8);
 824                 if (ret)
 825                         goto fail_unreserve;
 826
 827                 BEGIN_NV04(chan, NvSubImageBlit, 0x012c, 1);
 828                 OUT_RING  (chan, 0);
 829                 BEGIN_NV04(chan, NvSubImageBlit, 0x0134, 1);
 830                 OUT_RING  (chan, head);
 831                 BEGIN_NV04(chan, NvSubImageBlit, 0x0100, 1);
 832                 OUT_RING  (chan, 0);
 833                 BEGIN_NV04(chan, NvSubImageBlit, 0x0130, 1);
 834                 OUT_RING  (chan, 0);
 835         }
 836
 837         nouveau_bo_ref(new_bo, &dispnv04->image[head]);
 838
 839         ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
 840         if (ret)
 841                 goto fail_unreserve;
 842         mutex_unlock(&cli->mutex);
 843
 844         /* Update the crtc struct and cleanup */
 845         crtc->primary->fb = fb;
 846
 847         nouveau_bo_fence(old_bo, fence, false);
 848         ttm_bo_unreserve(&old_bo->bo);
 849         if (old_bo != new_bo)
 850                 nouveau_bo_unpin(old_bo);
 851         nouveau_fence_unref(&fence);
 852         return 0;
 853
 854 fail_unreserve:
 855         drm_crtc_vblank_put(crtc);
 856         ttm_bo_unreserve(&old_bo->bo);
 857 fail_unpin:
 858         mutex_unlock(&cli->mutex);
 859         if (old_bo != new_bo)
 860                 nouveau_bo_unpin(new_bo);
 861 fail_free:
 862         kfree(s);
 863         return ret;
 864 }
 865
 866 int
 867 nouveau_finish_page_flip(struct nouveau_channel *chan,
 868                          struct nouveau_page_flip_state *ps)
 869 {
 870         struct nouveau_fence_chan *fctx = chan->fence;
 871         struct nouveau_drm *drm = chan->drm;
 872         struct drm_device *dev = drm->dev;
 873         struct nouveau_page_flip_state *s;
 874         unsigned long flags;
 875
 876         spin_lock_irqsave(&dev->event_lock, flags);
 877
 878         if (list_empty(&fctx->flip)) {
 879                 NV_ERROR(drm, "unexpected pageflip\n");
 880                 spin_unlock_irqrestore(&dev->event_lock, flags);
 881                 return -EINVAL;
 882         }
 883
 884         s = list_first_entry(&fctx->flip, struct nouveau_page_flip_state, head);
 885         if (s->event) {
 886                 drm_crtc_arm_vblank_event(s->crtc, s->event);
 887         } else {
 888                 /* Give up ownership of vblank for page-flipped crtc */
 889                 drm_crtc_vblank_put(s->crtc);
 890         }
 891
 892         list_del(&s->head);
 893         if (ps)
 894                 *ps = *s;
 895         kfree(s);
 896
 897         spin_unlock_irqrestore(&dev->event_lock, flags);
 898         return 0;
 899 }
 900
 901 int
 902 nouveau_flip_complete(struct nvif_notify *notify)
 903 {
 904         struct nouveau_drm *drm = container_of(notify, typeof(*drm), flip);
 905         struct nouveau_channel *chan = drm->channel;
 906         struct nouveau_page_flip_state state;
 907
 908         if (!nouveau_finish_page_flip(chan, &state)) {
 909                 nv_set_crtc_base(drm->dev, drm_crtc_index(state.crtc),
 910                                  state.offset + state.crtc->y *
 911                                  state.pitch + state.crtc->x *
 912                                  state.bpp / 8);
 913         }
 914
 915         return NVIF_NOTIFY_KEEP;
 916 }
 917
 918 int
 919 nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
 920                             struct drm_mode_create_dumb *args)
 921 {
 922         struct nouveau_cli *cli = nouveau_cli(file_priv);
 923         struct nouveau_bo *bo;
 924         uint32_t domain;
 925         int ret;
 926
 927         args->pitch = roundup(args->width * (args->bpp / 8), 256);
 928         args->size = args->pitch * args->height;
 929         args->size = roundup(args->size, PAGE_SIZE);
 930
 931         /* Use VRAM if there is any ; otherwise fallback to system memory */
 932         if (nouveau_drm(dev)->client.device.info.ram_size != 0)
 933                 domain = NOUVEAU_GEM_DOMAIN_VRAM;
 934         else
 935                 domain = NOUVEAU_GEM_DOMAIN_GART;
 936
 937         ret = nouveau_gem_new(cli, args->size, 0, domain, 0, 0, &bo);
 938         if (ret)
 939                 return ret;
 940
 941         ret = drm_gem_handle_create(file_priv, &bo->gem, &args->handle);
 942         drm_gem_object_unreference_unlocked(&bo->gem);
 943         return ret;
 944 }
 945
 946 int
 947 nouveau_display_dumb_map_offset(struct drm_file *file_priv,
 948                                 struct drm_device *dev,
 949                                 uint32_t handle, uint64_t *poffset)
 950 {
 951         struct drm_gem_object *gem;
 952
 953         gem = drm_gem_object_lookup(file_priv, handle);
 954         if (gem) {
 955                 struct nouveau_bo *bo = nouveau_gem_object(gem);
 956                 *poffset = drm_vma_node_offset_addr(&bo->bo.vma_node);
 957                 drm_gem_object_unreference_unlocked(gem);
 958                 return 0;
 959         }
 960
 961         return -ENOENT;
 962 }