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 <drm/drmP.h>
  28 #include <drm/drm_crtc_helper.h>
  29
  30 #include <nvif/class.h>
  31
  32 #include "nouveau_fbcon.h"
  33 #include "dispnv04/hw.h"
  34 #include "nouveau_crtc.h"
  35 #include "nouveau_dma.h"
  36 #include "nouveau_gem.h"
  37 #include "nouveau_connector.h"
  38 #include "nv50_display.h"
  39
  40 #include "nouveau_fence.h"
  41
  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_handle_vblank(nv_crtc->base.dev, nv_crtc->index);
  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         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
  59                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
  60                 if (nv_crtc->index == pipe) {
  61                         nvif_notify_get(&nv_crtc->vblank);
  62                         return 0;
  63                 }
  64         }
  65         return -EINVAL;
  66 }
  67
  68 void
  69 nouveau_display_vblank_disable(struct drm_device *dev, unsigned int pipe)
  70 {
  71         struct drm_crtc *crtc;
  72         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
  73                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
  74                 if (nv_crtc->index == pipe) {
  75                         nvif_notify_put(&nv_crtc->vblank);
  76                         return;
  77                 }
  78         }
  79 }
  80
  81 static inline int
  82 calc(int blanks, int blanke, int total, int line)
  83 {
  84         if (blanke >= blanks) {
  85                 if (line >= blanks)
  86                         line -= total;
  87         } else {
  88                 if (line >= blanks)
  89                         line -= total;
  90                 line -= blanke + 1;
  91         }
  92         return line;
  93 }
  94
  95 int
  96 nouveau_display_scanoutpos_head(struct drm_crtc *crtc, int *vpos, int *hpos,
  97                                 ktime_t *stime, ktime_t *etime)
  98 {
  99         struct {
 100                 struct nv04_disp_mthd_v0 base;
 101                 struct nv04_disp_scanoutpos_v0 scan;
 102         } args = {
 103                 .base.method = NV04_DISP_SCANOUTPOS,
 104                 .base.head = nouveau_crtc(crtc)->index,
 105         };
 106         struct nouveau_display *disp = nouveau_display(crtc->dev);
 107         struct drm_vblank_crtc *vblank = &crtc->dev->vblank[drm_crtc_index(crtc)];
 108         int ret, retry = 1;
 109
 110         do {
 111                 ret = nvif_mthd(&disp->disp, 0, &args, sizeof(args));
 112                 if (ret != 0)
 113                         return 0;
 114
 115                 if (args.scan.vline) {
 116                         ret |= DRM_SCANOUTPOS_ACCURATE;
 117                         ret |= DRM_SCANOUTPOS_VALID;
 118                         break;
 119                 }
 120
 121                 if (retry) ndelay(vblank->linedur_ns);
 122         } while (retry--);
 123
 124         *hpos = args.scan.hline;
 125         *vpos = calc(args.scan.vblanks, args.scan.vblanke,
 126                      args.scan.vtotal, args.scan.vline);
 127         if (stime) *stime = ns_to_ktime(args.scan.time[0]);
 128         if (etime) *etime = ns_to_ktime(args.scan.time[1]);
 129
 130         if (*vpos < 0)
 131                 ret |= DRM_SCANOUTPOS_IN_VBLANK;
 132         return ret;
 133 }
 134
 135 int
 136 nouveau_display_scanoutpos(struct drm_device *dev, unsigned int pipe,
 137                            unsigned int flags, int *vpos, int *hpos,
 138                            ktime_t *stime, ktime_t *etime,
 139                            const struct drm_display_mode *mode)
 140 {
 141         struct drm_crtc *crtc;
 142
 143         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 144                 if (nouveau_crtc(crtc)->index == pipe) {
 145                         return nouveau_display_scanoutpos_head(crtc, vpos, hpos,
 146                                                                stime, etime);
 147                 }
 148         }
 149
 150         return 0;
 151 }
 152
 153 int
 154 nouveau_display_vblstamp(struct drm_device *dev, unsigned int pipe,
 155                          int *max_error, struct timeval *time, unsigned flags)
 156 {
 157         struct drm_crtc *crtc;
 158
 159         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 160                 if (nouveau_crtc(crtc)->index == pipe) {
 161                         return drm_calc_vbltimestamp_from_scanoutpos(dev,
 162                                         pipe, max_error, time, flags,
 163                                         &crtc->hwmode);
 164                 }
 165         }
 166
 167         return -EINVAL;
 168 }
 169
 170 static void
 171 nouveau_display_vblank_fini(struct drm_device *dev)
 172 {
 173         struct drm_crtc *crtc;
 174
 175         drm_vblank_cleanup(dev);
 176
 177         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 178                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 179                 nvif_notify_fini(&nv_crtc->vblank);
 180         }
 181 }
 182
 183 static int
 184 nouveau_display_vblank_init(struct drm_device *dev)
 185 {
 186         struct nouveau_display *disp = nouveau_display(dev);
 187         struct drm_crtc *crtc;
 188         int ret;
 189
 190         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 191                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 192                 ret = nvif_notify_init(&disp->disp,
 193                                        nouveau_display_vblank_handler, false,
 194                                        NV04_DISP_NTFY_VBLANK,
 195                                        &(struct nvif_notify_head_req_v0) {
 196                                         .head = nv_crtc->index,
 197                                        },
 198                                        sizeof(struct nvif_notify_head_req_v0),
 199                                        sizeof(struct nvif_notify_head_rep_v0),
 200                                        &nv_crtc->vblank);
 201                 if (ret) {
 202                         nouveau_display_vblank_fini(dev);
 203                         return ret;
 204                 }
 205         }
 206
 207         ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
 208         if (ret) {
 209                 nouveau_display_vblank_fini(dev);
 210                 return ret;
 211         }
 212
 213         return 0;
 214 }
 215
 216 static void
 217 nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb)
 218 {
 219         struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
 220         struct nouveau_display *disp = nouveau_display(drm_fb->dev);
 221
 222         if (disp->fb_dtor)
 223                 disp->fb_dtor(drm_fb);
 224
 225         if (fb->nvbo)
 226                 drm_gem_object_unreference_unlocked(&fb->nvbo->gem);
 227
 228         drm_framebuffer_cleanup(drm_fb);
 229         kfree(fb);
 230 }
 231
 232 static int
 233 nouveau_user_framebuffer_create_handle(struct drm_framebuffer *drm_fb,
 234                                        struct drm_file *file_priv,
 235                                        unsigned int *handle)
 236 {
 237         struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
 238
 239         return drm_gem_handle_create(file_priv, &fb->nvbo->gem, handle);
 240 }
 241
 242 static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
 243         .destroy = nouveau_user_framebuffer_destroy,
 244         .create_handle = nouveau_user_framebuffer_create_handle,
 245 };
 246
 247 int
 248 nouveau_framebuffer_init(struct drm_device *dev,
 249                          struct nouveau_framebuffer *nv_fb,
 250                          const struct drm_mode_fb_cmd2 *mode_cmd,
 251                          struct nouveau_bo *nvbo)
 252 {
 253         struct nouveau_display *disp = nouveau_display(dev);
 254         struct drm_framebuffer *fb = &nv_fb->base;
 255         int ret;
 256
 257         drm_helper_mode_fill_fb_struct(fb, mode_cmd);
 258         nv_fb->nvbo = nvbo;
 259
 260         ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
 261         if (ret)
 262                 return ret;
 263
 264         if (disp->fb_ctor) {
 265                 ret = disp->fb_ctor(fb);
 266                 if (ret)
 267                         disp->fb_dtor(fb);
 268         }
 269
 270         return ret;
 271 }
 272
 273 static struct drm_framebuffer *
 274 nouveau_user_framebuffer_create(struct drm_device *dev,
 275                                 struct drm_file *file_priv,
 276                                 const struct drm_mode_fb_cmd2 *mode_cmd)
 277 {
 278         struct nouveau_framebuffer *nouveau_fb;
 279         struct drm_gem_object *gem;
 280         int ret = -ENOMEM;
 281
 282         gem = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
 283         if (!gem)
 284                 return ERR_PTR(-ENOENT);
 285
 286         nouveau_fb = kzalloc(sizeof(struct nouveau_framebuffer), GFP_KERNEL);
 287         if (!nouveau_fb)
 288                 goto err_unref;
 289
 290         ret = nouveau_framebuffer_init(dev, nouveau_fb, mode_cmd, nouveau_gem_object(gem));
 291         if (ret)
 292                 goto err;
 293
 294         return &nouveau_fb->base;
 295
 296 err:
 297         kfree(nouveau_fb);
 298 err_unref:
 299         drm_gem_object_unreference(gem);
 300         return ERR_PTR(ret);
 301 }
 302
 303 static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
 304         .fb_create = nouveau_user_framebuffer_create,
 305         .output_poll_changed = nouveau_fbcon_output_poll_changed,
 306 };
 307
 308
 309 struct nouveau_drm_prop_enum_list {
 310         u8 gen_mask;
 311         int type;
 312         char *name;
 313 };
 314
 315 static struct nouveau_drm_prop_enum_list underscan[] = {
 316         { 6, UNDERSCAN_AUTO, "auto" },
 317         { 6, UNDERSCAN_OFF, "off" },
 318         { 6, UNDERSCAN_ON, "on" },
 319         {}
 320 };
 321
 322 static struct nouveau_drm_prop_enum_list dither_mode[] = {
 323         { 7, DITHERING_MODE_AUTO, "auto" },
 324         { 7, DITHERING_MODE_OFF, "off" },
 325         { 1, DITHERING_MODE_ON, "on" },
 326         { 6, DITHERING_MODE_STATIC2X2, "static 2x2" },
 327         { 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" },
 328         { 4, DITHERING_MODE_TEMPORAL, "temporal" },
 329         {}
 330 };
 331
 332 static struct nouveau_drm_prop_enum_list dither_depth[] = {
 333         { 6, DITHERING_DEPTH_AUTO, "auto" },
 334         { 6, DITHERING_DEPTH_6BPC, "6 bpc" },
 335         { 6, DITHERING_DEPTH_8BPC, "8 bpc" },
 336         {}
 337 };
 338
 339 #define PROP_ENUM(p,gen,n,list) do {                                           \
 340         struct nouveau_drm_prop_enum_list *l = (list);                         \
 341         int c = 0;                                                             \
 342         while (l->gen_mask) {                                                  \
 343                 if (l->gen_mask & (1 << (gen)))                                \
 344                         c++;                                                   \
 345                 l++;                                                           \
 346         }                                                                      \
 347         if (c) {                                                               \
 348                 p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c);        \
 349                 l = (list);                                                    \
 350                 c = 0;                                                         \
 351                 while (p && l->gen_mask) {                                     \
 352                         if (l->gen_mask & (1 << (gen))) {                      \
 353                                 drm_property_add_enum(p, c, l->type, l->name); \
 354                                 c++;                                           \
 355                         }                                                      \
 356                         l++;                                                   \
 357                 }                                                              \
 358         }                                                                      \
 359 } while(0)
 360
 361 int
 362 nouveau_display_init(struct drm_device *dev)
 363 {
 364         struct nouveau_display *disp = nouveau_display(dev);
 365         struct nouveau_drm *drm = nouveau_drm(dev);
 366         struct drm_connector *connector;
 367         int ret;
 368
 369         ret = disp->init(dev);
 370         if (ret)
 371                 return ret;
 372
 373         /* enable polling for external displays */
 374         drm_kms_helper_poll_enable(dev);
 375
 376         /* enable hotplug interrupts */
 377         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 378                 struct nouveau_connector *conn = nouveau_connector(connector);
 379                 nvif_notify_get(&conn->hpd);
 380         }
 381
 382         /* enable flip completion events */
 383         nvif_notify_get(&drm->flip);
 384         return ret;
 385 }
 386
 387 void
 388 nouveau_display_fini(struct drm_device *dev)
 389 {
 390         struct nouveau_display *disp = nouveau_display(dev);
 391         struct nouveau_drm *drm = nouveau_drm(dev);
 392         struct drm_connector *connector;
 393         int head;
 394
 395         /* Make sure that drm and hw vblank irqs get properly disabled. */
 396         for (head = 0; head < dev->mode_config.num_crtc; head++)
 397                 drm_vblank_off(dev, head);
 398
 399         /* disable flip completion events */
 400         nvif_notify_put(&drm->flip);
 401
 402         /* disable hotplug interrupts */
 403         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 404                 struct nouveau_connector *conn = nouveau_connector(connector);
 405                 nvif_notify_put(&conn->hpd);
 406         }
 407
 408         drm_kms_helper_poll_disable(dev);
 409         disp->fini(dev);
 410 }
 411
 412 static void
 413 nouveau_display_create_properties(struct drm_device *dev)
 414 {
 415         struct nouveau_display *disp = nouveau_display(dev);
 416         int gen;
 417
 418         if (disp->disp.oclass < NV50_DISP)
 419                 gen = 0;
 420         else
 421         if (disp->disp.oclass < GF110_DISP)
 422                 gen = 1;
 423         else
 424                 gen = 2;
 425
 426         PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
 427         PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
 428         PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);
 429
 430         disp->underscan_hborder_property =
 431                 drm_property_create_range(dev, 0, "underscan hborder", 0, 128);
 432
 433         disp->underscan_vborder_property =
 434                 drm_property_create_range(dev, 0, "underscan vborder", 0, 128);
 435
 436         if (gen < 1)
 437                 return;
 438
 439         /* -90..+90 */
 440         disp->vibrant_hue_property =
 441                 drm_property_create_range(dev, 0, "vibrant hue", 0, 180);
 442
 443         /* -100..+100 */
 444         disp->color_vibrance_property =
 445                 drm_property_create_range(dev, 0, "color vibrance", 0, 200);
 446 }
 447
 448 int
 449 nouveau_display_create(struct drm_device *dev)
 450 {
 451         struct nouveau_drm *drm = nouveau_drm(dev);
 452         struct nvkm_device *device = nvxx_device(&drm->device);
 453         struct nouveau_display *disp;
 454         int ret;
 455
 456         disp = drm->display = kzalloc(sizeof(*disp), GFP_KERNEL);
 457         if (!disp)
 458                 return -ENOMEM;
 459
 460         drm_mode_config_init(dev);
 461         drm_mode_create_scaling_mode_property(dev);
 462         drm_mode_create_dvi_i_properties(dev);
 463
 464         dev->mode_config.funcs = &nouveau_mode_config_funcs;
 465         dev->mode_config.fb_base = device->func->resource_addr(device, 1);
 466
 467         dev->mode_config.min_width = 0;
 468         dev->mode_config.min_height = 0;
 469         if (drm->device.info.family < NV_DEVICE_INFO_V0_CELSIUS) {
 470                 dev->mode_config.max_width = 2048;
 471                 dev->mode_config.max_height = 2048;
 472         } else
 473         if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 474                 dev->mode_config.max_width = 4096;
 475                 dev->mode_config.max_height = 4096;
 476         } else
 477         if (drm->device.info.family < NV_DEVICE_INFO_V0_FERMI) {
 478                 dev->mode_config.max_width = 8192;
 479                 dev->mode_config.max_height = 8192;
 480         } else {
 481                 dev->mode_config.max_width = 16384;
 482                 dev->mode_config.max_height = 16384;
 483         }
 484
 485         dev->mode_config.preferred_depth = 24;
 486         dev->mode_config.prefer_shadow = 1;
 487
 488         if (drm->device.info.chipset < 0x11)
 489                 dev->mode_config.async_page_flip = false;
 490         else
 491                 dev->mode_config.async_page_flip = true;
 492
 493         drm_kms_helper_poll_init(dev);
 494         drm_kms_helper_poll_disable(dev);
 495
 496         if (nouveau_modeset != 2 && drm->vbios.dcb.entries) {
 497                 static const u16 oclass[] = {
 498                         GM204_DISP,
 499                         GM107_DISP,
 500                         GK110_DISP,
 501                         GK104_DISP,
 502                         GF110_DISP,
 503                         GT214_DISP,
 504                         GT206_DISP,
 505                         GT200_DISP,
 506                         G82_DISP,
 507                         NV50_DISP,
 508                         NV04_DISP,
 509                 };
 510                 int i;
 511
 512                 for (i = 0, ret = -ENODEV; ret && i < ARRAY_SIZE(oclass); i++) {
 513                         ret = nvif_object_init(&drm->device.object, 0,
 514                                                oclass[i], NULL, 0, &disp->disp);
 515                 }
 516
 517                 if (ret == 0) {
 518                         nouveau_display_create_properties(dev);
 519                         if (disp->disp.oclass < NV50_DISP)
 520                                 ret = nv04_display_create(dev);
 521                         else
 522                                 ret = nv50_display_create(dev);
 523                 }
 524         } else {
 525                 ret = 0;
 526         }
 527
 528         if (ret)
 529                 goto disp_create_err;
 530
 531         if (dev->mode_config.num_crtc) {
 532                 ret = nouveau_display_vblank_init(dev);
 533                 if (ret)
 534                         goto vblank_err;
 535         }
 536
 537         nouveau_backlight_init(dev);
 538         return 0;
 539
 540 vblank_err:
 541         disp->dtor(dev);
 542 disp_create_err:
 543         drm_kms_helper_poll_fini(dev);
 544         drm_mode_config_cleanup(dev);
 545         return ret;
 546 }
 547
 548 void
 549 nouveau_display_destroy(struct drm_device *dev)
 550 {
 551         struct nouveau_display *disp = nouveau_display(dev);
 552
 553         nouveau_backlight_exit(dev);
 554         nouveau_display_vblank_fini(dev);
 555
 556         drm_kms_helper_poll_fini(dev);
 557         drm_mode_config_cleanup(dev);
 558
 559         if (disp->dtor)
 560                 disp->dtor(dev);
 561
 562         nvif_object_fini(&disp->disp);
 563
 564         nouveau_drm(dev)->display = NULL;
 565         kfree(disp);
 566 }
 567
 568 int
 569 nouveau_display_suspend(struct drm_device *dev, bool runtime)
 570 {
 571         struct drm_crtc *crtc;
 572
 573         nouveau_display_fini(dev);
 574
 575         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 576                 struct nouveau_framebuffer *nouveau_fb;
 577
 578                 nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
 579                 if (!nouveau_fb || !nouveau_fb->nvbo)
 580                         continue;
 581
 582                 nouveau_bo_unpin(nouveau_fb->nvbo);
 583         }
 584
 585         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 586                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 587                 if (nv_crtc->cursor.nvbo) {
 588                         if (nv_crtc->cursor.set_offset)
 589                                 nouveau_bo_unmap(nv_crtc->cursor.nvbo);
 590                         nouveau_bo_unpin(nv_crtc->cursor.nvbo);
 591                 }
 592         }
 593
 594         return 0;
 595 }
 596
 597 void
 598 nouveau_display_resume(struct drm_device *dev, bool runtime)
 599 {
 600         struct nouveau_drm *drm = nouveau_drm(dev);
 601         struct drm_crtc *crtc;
 602         int ret, head;
 603
 604         /* re-pin fb/cursors */
 605         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 606                 struct nouveau_framebuffer *nouveau_fb;
 607
 608                 nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
 609                 if (!nouveau_fb || !nouveau_fb->nvbo)
 610                         continue;
 611
 612                 ret = nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM, true);
 613                 if (ret)
 614                         NV_ERROR(drm, "Could not pin framebuffer\n");
 615         }
 616
 617         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 618                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 619                 if (!nv_crtc->cursor.nvbo)
 620                         continue;
 621
 622                 ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM, true);
 623                 if (!ret && nv_crtc->cursor.set_offset)
 624                         ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
 625                 if (ret)
 626                         NV_ERROR(drm, "Could not pin/map cursor.\n");
 627         }
 628
 629         nouveau_display_init(dev);
 630
 631         /* Force CLUT to get re-loaded during modeset */
 632         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 633                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 634
 635                 nv_crtc->lut.depth = 0;
 636         }
 637
 638         /* This should ensure we don't hit a locking problem when someone
 639          * wakes us up via a connector.  We should never go into suspend
 640          * while the display is on anyways.
 641          */
 642         if (runtime)
 643                 return;
 644
 645         drm_helper_resume_force_mode(dev);
 646
 647         /* Make sure that drm and hw vblank irqs get resumed if needed. */
 648         for (head = 0; head < dev->mode_config.num_crtc; head++)
 649                 drm_vblank_on(dev, head);
 650
 651         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 652                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 653
 654                 if (!nv_crtc->cursor.nvbo)
 655                         continue;
 656
 657                 if (nv_crtc->cursor.set_offset)
 658                         nv_crtc->cursor.set_offset(nv_crtc, nv_crtc->cursor.nvbo->bo.offset);
 659                 nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
 660                                                  nv_crtc->cursor_saved_y);
 661         }
 662 }
 663
 664 static int
 665 nouveau_page_flip_emit(struct nouveau_channel *chan,
 666                        struct nouveau_bo *old_bo,
 667                        struct nouveau_bo *new_bo,
 668                        struct nouveau_page_flip_state *s,
 669                        struct nouveau_fence **pfence)
 670 {
 671         struct nouveau_fence_chan *fctx = chan->fence;
 672         struct nouveau_drm *drm = chan->drm;
 673         struct drm_device *dev = drm->dev;
 674         unsigned long flags;
 675         int ret;
 676
 677         /* Queue it to the pending list */
 678         spin_lock_irqsave(&dev->event_lock, flags);
 679         list_add_tail(&s->head, &fctx->flip);
 680         spin_unlock_irqrestore(&dev->event_lock, flags);
 681
 682         /* Synchronize with the old framebuffer */
 683         ret = nouveau_fence_sync(old_bo, chan, false, false);
 684         if (ret)
 685                 goto fail;
 686
 687         /* Emit the pageflip */
 688         ret = RING_SPACE(chan, 2);
 689         if (ret)
 690                 goto fail;
 691
 692         if (drm->device.info.family < NV_DEVICE_INFO_V0_FERMI)
 693                 BEGIN_NV04(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
 694         else
 695                 BEGIN_NVC0(chan, FermiSw, NV_SW_PAGE_FLIP, 1);
 696         OUT_RING  (chan, 0x00000000);
 697         FIRE_RING (chan);
 698
 699         ret = nouveau_fence_new(chan, false, pfence);
 700         if (ret)
 701                 goto fail;
 702
 703         return 0;
 704 fail:
 705         spin_lock_irqsave(&dev->event_lock, flags);
 706         list_del(&s->head);
 707         spin_unlock_irqrestore(&dev->event_lock, flags);
 708         return ret;
 709 }
 710
 711 int
 712 nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 713                        struct drm_pending_vblank_event *event, u32 flags)
 714 {
 715         const int swap_interval = (flags & DRM_MODE_PAGE_FLIP_ASYNC) ? 0 : 1;
 716         struct drm_device *dev = crtc->dev;
 717         struct nouveau_drm *drm = nouveau_drm(dev);
 718         struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->primary->fb)->nvbo;
 719         struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
 720         struct nouveau_page_flip_state *s;
 721         struct nouveau_channel *chan;
 722         struct nouveau_cli *cli;
 723         struct nouveau_fence *fence;
 724         int ret;
 725
 726         chan = drm->channel;
 727         if (!chan)
 728                 return -ENODEV;
 729         cli = (void *)chan->user.client;
 730
 731         s = kzalloc(sizeof(*s), GFP_KERNEL);
 732         if (!s)
 733                 return -ENOMEM;
 734
 735         if (new_bo != old_bo) {
 736                 ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM, true);
 737                 if (ret)
 738                         goto fail_free;
 739         }
 740
 741         mutex_lock(&cli->mutex);
 742         ret = ttm_bo_reserve(&new_bo->bo, true, false, false, NULL);
 743         if (ret)
 744                 goto fail_unpin;
 745
 746         /* synchronise rendering channel with the kernel's channel */
 747         ret = nouveau_fence_sync(new_bo, chan, false, true);
 748         if (ret) {
 749                 ttm_bo_unreserve(&new_bo->bo);
 750                 goto fail_unpin;
 751         }
 752
 753         if (new_bo != old_bo) {
 754                 ttm_bo_unreserve(&new_bo->bo);
 755
 756                 ret = ttm_bo_reserve(&old_bo->bo, true, false, false, NULL);
 757                 if (ret)
 758                         goto fail_unpin;
 759         }
 760
 761         /* Initialize a page flip struct */
 762         *s = (struct nouveau_page_flip_state)
 763                 { { }, event, nouveau_crtc(crtc)->index,
 764                   fb->bits_per_pixel, fb->pitches[0], crtc->x, crtc->y,
 765                   new_bo->bo.offset };
 766
 767         /* Keep vblanks on during flip, for the target crtc of this flip */
 768         drm_vblank_get(dev, nouveau_crtc(crtc)->index);
 769
 770         /* Emit a page flip */
 771         if (drm->device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 772                 ret = nv50_display_flip_next(crtc, fb, chan, swap_interval);
 773                 if (ret)
 774                         goto fail_unreserve;
 775         } else {
 776                 struct nv04_display *dispnv04 = nv04_display(dev);
 777                 int head = nouveau_crtc(crtc)->index;
 778
 779                 if (swap_interval) {
 780                         ret = RING_SPACE(chan, 8);
 781                         if (ret)
 782                                 goto fail_unreserve;
 783
 784                         BEGIN_NV04(chan, NvSubImageBlit, 0x012c, 1);
 785                         OUT_RING  (chan, 0);
 786                         BEGIN_NV04(chan, NvSubImageBlit, 0x0134, 1);
 787                         OUT_RING  (chan, head);
 788                         BEGIN_NV04(chan, NvSubImageBlit, 0x0100, 1);
 789                         OUT_RING  (chan, 0);
 790                         BEGIN_NV04(chan, NvSubImageBlit, 0x0130, 1);
 791                         OUT_RING  (chan, 0);
 792                 }
 793
 794                 nouveau_bo_ref(new_bo, &dispnv04->image[head]);
 795         }
 796
 797         ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
 798         if (ret)
 799                 goto fail_unreserve;
 800         mutex_unlock(&cli->mutex);
 801
 802         /* Update the crtc struct and cleanup */
 803         crtc->primary->fb = fb;
 804
 805         nouveau_bo_fence(old_bo, fence, false);
 806         ttm_bo_unreserve(&old_bo->bo);
 807         if (old_bo != new_bo)
 808                 nouveau_bo_unpin(old_bo);
 809         nouveau_fence_unref(&fence);
 810         return 0;
 811
 812 fail_unreserve:
 813         drm_vblank_put(dev, nouveau_crtc(crtc)->index);
 814         ttm_bo_unreserve(&old_bo->bo);
 815 fail_unpin:
 816         mutex_unlock(&cli->mutex);
 817         if (old_bo != new_bo)
 818                 nouveau_bo_unpin(new_bo);
 819 fail_free:
 820         kfree(s);
 821         return ret;
 822 }
 823
 824 int
 825 nouveau_finish_page_flip(struct nouveau_channel *chan,
 826                          struct nouveau_page_flip_state *ps)
 827 {
 828         struct nouveau_fence_chan *fctx = chan->fence;
 829         struct nouveau_drm *drm = chan->drm;
 830         struct drm_device *dev = drm->dev;
 831         struct nouveau_page_flip_state *s;
 832         unsigned long flags;
 833
 834         spin_lock_irqsave(&dev->event_lock, flags);
 835
 836         if (list_empty(&fctx->flip)) {
 837                 NV_ERROR(drm, "unexpected pageflip\n");
 838                 spin_unlock_irqrestore(&dev->event_lock, flags);
 839                 return -EINVAL;
 840         }
 841
 842         s = list_first_entry(&fctx->flip, struct nouveau_page_flip_state, head);
 843         if (s->event) {
 844                 if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 845                         drm_arm_vblank_event(dev, s->crtc, s->event);
 846                 } else {
 847                         drm_send_vblank_event(dev, s->crtc, s->event);
 848
 849                         /* Give up ownership of vblank for page-flipped crtc */
 850                         drm_vblank_put(dev, s->crtc);
 851                 }
 852         }
 853         else {
 854                 /* Give up ownership of vblank for page-flipped crtc */
 855                 drm_vblank_put(dev, s->crtc);
 856         }
 857
 858         list_del(&s->head);
 859         if (ps)
 860                 *ps = *s;
 861         kfree(s);
 862
 863         spin_unlock_irqrestore(&dev->event_lock, flags);
 864         return 0;
 865 }
 866
 867 int
 868 nouveau_flip_complete(struct nvif_notify *notify)
 869 {
 870         struct nouveau_drm *drm = container_of(notify, typeof(*drm), flip);
 871         struct nouveau_channel *chan = drm->channel;
 872         struct nouveau_page_flip_state state;
 873
 874         if (!nouveau_finish_page_flip(chan, &state)) {
 875                 if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 876                         nv_set_crtc_base(drm->dev, state.crtc, state.offset +
 877                                          state.y * state.pitch +
 878                                          state.x * state.bpp / 8);
 879                 }
 880         }
 881
 882         return NVIF_NOTIFY_KEEP;
 883 }
 884
 885 int
 886 nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
 887                             struct drm_mode_create_dumb *args)
 888 {
 889         struct nouveau_bo *bo;
 890         uint32_t domain;
 891         int ret;
 892
 893         args->pitch = roundup(args->width * (args->bpp / 8), 256);
 894         args->size = args->pitch * args->height;
 895         args->size = roundup(args->size, PAGE_SIZE);
 896
 897         /* Use VRAM if there is any ; otherwise fallback to system memory */
 898         if (nouveau_drm(dev)->device.info.ram_size != 0)
 899                 domain = NOUVEAU_GEM_DOMAIN_VRAM;
 900         else
 901                 domain = NOUVEAU_GEM_DOMAIN_GART;
 902
 903         ret = nouveau_gem_new(dev, args->size, 0, domain, 0, 0, &bo);
 904         if (ret)
 905                 return ret;
 906
 907         ret = drm_gem_handle_create(file_priv, &bo->gem, &args->handle);
 908         drm_gem_object_unreference_unlocked(&bo->gem);
 909         return ret;
 910 }
 911
 912 int
 913 nouveau_display_dumb_map_offset(struct drm_file *file_priv,
 914                                 struct drm_device *dev,
 915                                 uint32_t handle, uint64_t *poffset)
 916 {
 917         struct drm_gem_object *gem;
 918
 919         gem = drm_gem_object_lookup(dev, file_priv, handle);
 920         if (gem) {
 921                 struct nouveau_bo *bo = nouveau_gem_object(gem);
 922                 *poffset = drm_vma_node_offset_addr(&bo->bo.vma_node);
 923                 drm_gem_object_unreference_unlocked(gem);
 924                 return 0;
 925         }
 926
 927         return -ENOENT;
 928 }