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 #include <drm/ttm/ttm_execbuf_util.h>
  30
  31 #include "nouveau_fbcon.h"
  32 #include "dispnv04/hw.h"
  33 #include "nouveau_crtc.h"
  34 #include "nouveau_dma.h"
  35 #include "nouveau_gem.h"
  36 #include "nouveau_connector.h"
  37 #include "nv50_display.h"
  38
  39 #include "nouveau_fence.h"
  40
  41 #include <subdev/bios/gpio.h>
  42 #include <subdev/gpio.h>
  43 #include <engine/disp.h>
  44
  45 #include <core/class.h>
  46
  47 static void
  48 nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb)
  49 {
  50         struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
  51
  52         if (fb->nvbo)
  53                 drm_gem_object_unreference_unlocked(fb->nvbo->gem);
  54
  55         drm_framebuffer_cleanup(drm_fb);
  56         kfree(fb);
  57 }
  58
  59 static int
  60 nouveau_user_framebuffer_create_handle(struct drm_framebuffer *drm_fb,
  61                                        struct drm_file *file_priv,
  62                                        unsigned int *handle)
  63 {
  64         struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
  65
  66         return drm_gem_handle_create(file_priv, fb->nvbo->gem, handle);
  67 }
  68
  69 static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
  70         .destroy = nouveau_user_framebuffer_destroy,
  71         .create_handle = nouveau_user_framebuffer_create_handle,
  72 };
  73
  74 int
  75 nouveau_framebuffer_init(struct drm_device *dev,
  76                          struct nouveau_framebuffer *nv_fb,
  77                          struct drm_mode_fb_cmd2 *mode_cmd,
  78                          struct nouveau_bo *nvbo)
  79 {
  80         struct nouveau_drm *drm = nouveau_drm(dev);
  81         struct drm_framebuffer *fb = &nv_fb->base;
  82         int ret;
  83
  84         drm_helper_mode_fill_fb_struct(fb, mode_cmd);
  85         nv_fb->nvbo = nvbo;
  86
  87         if (nv_device(drm->device)->card_type >= NV_50) {
  88                 u32 tile_flags = nouveau_bo_tile_layout(nvbo);
  89                 if (tile_flags == 0x7a00 ||
  90                     tile_flags == 0xfe00)
  91                         nv_fb->r_dma = NvEvoFB32;
  92                 else
  93                 if (tile_flags == 0x7000)
  94                         nv_fb->r_dma = NvEvoFB16;
  95                 else
  96                         nv_fb->r_dma = NvEvoVRAM_LP;
  97
  98                 switch (fb->depth) {
  99                 case  8: nv_fb->r_format = 0x1e00; break;
 100                 case 15: nv_fb->r_format = 0xe900; break;
 101                 case 16: nv_fb->r_format = 0xe800; break;
 102                 case 24:
 103                 case 32: nv_fb->r_format = 0xcf00; break;
 104                 case 30: nv_fb->r_format = 0xd100; break;
 105                 default:
 106                          NV_ERROR(drm, "unknown depth %d\n", fb->depth);
 107                          return -EINVAL;
 108                 }
 109
 110                 if (nv_device(drm->device)->chipset == 0x50)
 111                         nv_fb->r_format |= (tile_flags << 8);
 112
 113                 if (!tile_flags) {
 114                         if (nv_device(drm->device)->card_type < NV_D0)
 115                                 nv_fb->r_pitch = 0x00100000 | fb->pitches[0];
 116                         else
 117                                 nv_fb->r_pitch = 0x01000000 | fb->pitches[0];
 118                 } else {
 119                         u32 mode = nvbo->tile_mode;
 120                         if (nv_device(drm->device)->card_type >= NV_C0)
 121                                 mode >>= 4;
 122                         nv_fb->r_pitch = ((fb->pitches[0] / 4) << 4) | mode;
 123                 }
 124         }
 125
 126         ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
 127         if (ret) {
 128                 return ret;
 129         }
 130
 131         return 0;
 132 }
 133
 134 static struct drm_framebuffer *
 135 nouveau_user_framebuffer_create(struct drm_device *dev,
 136                                 struct drm_file *file_priv,
 137                                 struct drm_mode_fb_cmd2 *mode_cmd)
 138 {
 139         struct nouveau_framebuffer *nouveau_fb;
 140         struct drm_gem_object *gem;
 141         int ret;
 142
 143         gem = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
 144         if (!gem)
 145                 return ERR_PTR(-ENOENT);
 146
 147         nouveau_fb = kzalloc(sizeof(struct nouveau_framebuffer), GFP_KERNEL);
 148         if (!nouveau_fb)
 149                 return ERR_PTR(-ENOMEM);
 150
 151         ret = nouveau_framebuffer_init(dev, nouveau_fb, mode_cmd, nouveau_gem_object(gem));
 152         if (ret) {
 153                 drm_gem_object_unreference(gem);
 154                 return ERR_PTR(ret);
 155         }
 156
 157         return &nouveau_fb->base;
 158 }
 159
 160 static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
 161         .fb_create = nouveau_user_framebuffer_create,
 162         .output_poll_changed = nouveau_fbcon_output_poll_changed,
 163 };
 164
 165
 166 struct nouveau_drm_prop_enum_list {
 167         u8 gen_mask;
 168         int type;
 169         char *name;
 170 };
 171
 172 static struct nouveau_drm_prop_enum_list underscan[] = {
 173         { 6, UNDERSCAN_AUTO, "auto" },
 174         { 6, UNDERSCAN_OFF, "off" },
 175         { 6, UNDERSCAN_ON, "on" },
 176         {}
 177 };
 178
 179 static struct nouveau_drm_prop_enum_list dither_mode[] = {
 180         { 7, DITHERING_MODE_AUTO, "auto" },
 181         { 7, DITHERING_MODE_OFF, "off" },
 182         { 1, DITHERING_MODE_ON, "on" },
 183         { 6, DITHERING_MODE_STATIC2X2, "static 2x2" },
 184         { 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" },
 185         { 4, DITHERING_MODE_TEMPORAL, "temporal" },
 186         {}
 187 };
 188
 189 static struct nouveau_drm_prop_enum_list dither_depth[] = {
 190         { 6, DITHERING_DEPTH_AUTO, "auto" },
 191         { 6, DITHERING_DEPTH_6BPC, "6 bpc" },
 192         { 6, DITHERING_DEPTH_8BPC, "8 bpc" },
 193         {}
 194 };
 195
 196 #define PROP_ENUM(p,gen,n,list) do {                                           \
 197         struct nouveau_drm_prop_enum_list *l = (list);                         \
 198         int c = 0;                                                             \
 199         while (l->gen_mask) {                                                  \
 200                 if (l->gen_mask & (1 << (gen)))                                \
 201                         c++;                                                   \
 202                 l++;                                                           \
 203         }                                                                      \
 204         if (c) {                                                               \
 205                 p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c);        \
 206                 l = (list);                                                    \
 207                 c = 0;                                                         \
 208                 while (p && l->gen_mask) {                                     \
 209                         if (l->gen_mask & (1 << (gen))) {                      \
 210                                 drm_property_add_enum(p, c, l->type, l->name); \
 211                                 c++;                                           \
 212                         }                                                      \
 213                         l++;                                                   \
 214                 }                                                              \
 215         }                                                                      \
 216 } while(0)
 217
 218 int
 219 nouveau_display_init(struct drm_device *dev)
 220 {
 221         struct nouveau_drm *drm = nouveau_drm(dev);
 222         struct nouveau_display *disp = nouveau_display(dev);
 223         struct nouveau_gpio *gpio = nouveau_gpio(drm->device);
 224         struct drm_connector *connector;
 225         int ret;
 226
 227         ret = disp->init(dev);
 228         if (ret)
 229                 return ret;
 230
 231         /* enable polling for external displays */
 232         drm_kms_helper_poll_enable(dev);
 233
 234         /* enable hotplug interrupts */
 235         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 236                 struct nouveau_connector *conn = nouveau_connector(connector);
 237                 if (gpio && conn->hpd.func != DCB_GPIO_UNUSED) {
 238                         nouveau_event_get(gpio->events, conn->hpd.line,
 239                                          &conn->hpd_func);
 240                 }
 241         }
 242
 243         return ret;
 244 }
 245
 246 void
 247 nouveau_display_fini(struct drm_device *dev)
 248 {
 249         struct nouveau_drm *drm = nouveau_drm(dev);
 250         struct nouveau_display *disp = nouveau_display(dev);
 251         struct nouveau_gpio *gpio = nouveau_gpio(drm->device);
 252         struct drm_connector *connector;
 253
 254         /* disable hotplug interrupts */
 255         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 256                 struct nouveau_connector *conn = nouveau_connector(connector);
 257                 if (gpio && conn->hpd.func != DCB_GPIO_UNUSED) {
 258                         nouveau_event_put(gpio->events, conn->hpd.line,
 259                                          &conn->hpd_func);
 260                 }
 261         }
 262
 263         drm_kms_helper_poll_disable(dev);
 264         disp->fini(dev);
 265 }
 266
 267 int
 268 nouveau_display_create(struct drm_device *dev)
 269 {
 270         struct nouveau_drm *drm = nouveau_drm(dev);
 271         struct nouveau_display *disp;
 272         u32 pclass = dev->pdev->class >> 8;
 273         int ret, gen;
 274
 275         disp = drm->display = kzalloc(sizeof(*disp), GFP_KERNEL);
 276         if (!disp)
 277                 return -ENOMEM;
 278
 279         drm_mode_config_init(dev);
 280         drm_mode_create_scaling_mode_property(dev);
 281         drm_mode_create_dvi_i_properties(dev);
 282
 283         if (nv_device(drm->device)->card_type < NV_50)
 284                 gen = 0;
 285         else
 286         if (nv_device(drm->device)->card_type < NV_D0)
 287                 gen = 1;
 288         else
 289                 gen = 2;
 290
 291         PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
 292         PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
 293         PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);
 294
 295         disp->underscan_hborder_property =
 296                 drm_property_create_range(dev, 0, "underscan hborder", 0, 128);
 297
 298         disp->underscan_vborder_property =
 299                 drm_property_create_range(dev, 0, "underscan vborder", 0, 128);
 300
 301         if (gen >= 1) {
 302                 /* -90..+90 */
 303                 disp->vibrant_hue_property =
 304                         drm_property_create_range(dev, 0, "vibrant hue", 0, 180);
 305
 306                 /* -100..+100 */
 307                 disp->color_vibrance_property =
 308                         drm_property_create_range(dev, 0, "color vibrance", 0, 200);
 309         }
 310
 311         dev->mode_config.funcs = &nouveau_mode_config_funcs;
 312         dev->mode_config.fb_base = pci_resource_start(dev->pdev, 1);
 313
 314         dev->mode_config.min_width = 0;
 315         dev->mode_config.min_height = 0;
 316         if (nv_device(drm->device)->card_type < NV_10) {
 317                 dev->mode_config.max_width = 2048;
 318                 dev->mode_config.max_height = 2048;
 319         } else
 320         if (nv_device(drm->device)->card_type < NV_50) {
 321                 dev->mode_config.max_width = 4096;
 322                 dev->mode_config.max_height = 4096;
 323         } else {
 324                 dev->mode_config.max_width = 8192;
 325                 dev->mode_config.max_height = 8192;
 326         }
 327
 328         dev->mode_config.preferred_depth = 24;
 329         dev->mode_config.prefer_shadow = 1;
 330
 331         drm_kms_helper_poll_init(dev);
 332         drm_kms_helper_poll_disable(dev);
 333
 334         if (nouveau_modeset == 1 ||
 335             (nouveau_modeset < 0 && pclass == PCI_CLASS_DISPLAY_VGA)) {
 336                 if (drm->vbios.dcb.entries) {
 337                         if (nv_device(drm->device)->card_type < NV_50)
 338                                 ret = nv04_display_create(dev);
 339                         else
 340                                 ret = nv50_display_create(dev);
 341                 } else {
 342                         ret = 0;
 343                 }
 344
 345                 if (ret)
 346                         goto disp_create_err;
 347
 348                 if (dev->mode_config.num_crtc) {
 349                         ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
 350                         if (ret)
 351                                 goto vblank_err;
 352                 }
 353
 354                 nouveau_backlight_init(dev);
 355         }
 356
 357         return 0;
 358
 359 vblank_err:
 360         disp->dtor(dev);
 361 disp_create_err:
 362         drm_kms_helper_poll_fini(dev);
 363         drm_mode_config_cleanup(dev);
 364         return ret;
 365 }
 366
 367 void
 368 nouveau_display_destroy(struct drm_device *dev)
 369 {
 370         struct nouveau_display *disp = nouveau_display(dev);
 371
 372         nouveau_backlight_exit(dev);
 373         drm_vblank_cleanup(dev);
 374
 375         drm_kms_helper_poll_fini(dev);
 376         drm_mode_config_cleanup(dev);
 377
 378         if (disp->dtor)
 379                 disp->dtor(dev);
 380
 381         nouveau_drm(dev)->display = NULL;
 382         kfree(disp);
 383 }
 384
 385 int
 386 nouveau_display_suspend(struct drm_device *dev)
 387 {
 388         struct nouveau_drm *drm = nouveau_drm(dev);
 389         struct drm_crtc *crtc;
 390
 391         nouveau_display_fini(dev);
 392
 393         NV_INFO(drm, "unpinning framebuffer(s)...\n");
 394         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 395                 struct nouveau_framebuffer *nouveau_fb;
 396
 397                 nouveau_fb = nouveau_framebuffer(crtc->fb);
 398                 if (!nouveau_fb || !nouveau_fb->nvbo)
 399                         continue;
 400
 401                 nouveau_bo_unpin(nouveau_fb->nvbo);
 402         }
 403
 404         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 405                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 406
 407                 nouveau_bo_unmap(nv_crtc->cursor.nvbo);
 408                 nouveau_bo_unpin(nv_crtc->cursor.nvbo);
 409         }
 410
 411         return 0;
 412 }
 413
 414 void
 415 nouveau_display_resume(struct drm_device *dev)
 416 {
 417         struct nouveau_drm *drm = nouveau_drm(dev);
 418         struct drm_crtc *crtc;
 419         int ret;
 420
 421         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 422                 struct nouveau_framebuffer *nouveau_fb;
 423
 424                 nouveau_fb = nouveau_framebuffer(crtc->fb);
 425                 if (!nouveau_fb || !nouveau_fb->nvbo)
 426                         continue;
 427
 428                 nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM);
 429         }
 430
 431         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 432                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 433
 434                 ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM);
 435                 if (!ret)
 436                         ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
 437                 if (ret)
 438                         NV_ERROR(drm, "Could not pin/map cursor.\n");
 439         }
 440
 441         nouveau_fbcon_set_suspend(dev, 0);
 442         nouveau_fbcon_zfill_all(dev);
 443
 444         nouveau_display_init(dev);
 445
 446         /* Force CLUT to get re-loaded during modeset */
 447         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 448                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 449
 450                 nv_crtc->lut.depth = 0;
 451         }
 452
 453         drm_helper_resume_force_mode(dev);
 454
 455         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 456                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 457                 u32 offset = nv_crtc->cursor.nvbo->bo.offset;
 458
 459                 nv_crtc->cursor.set_offset(nv_crtc, offset);
 460                 nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
 461                                                  nv_crtc->cursor_saved_y);
 462         }
 463 }
 464
 465 static int
 466 nouveau_page_flip_emit(struct nouveau_channel *chan,
 467                        struct nouveau_bo *old_bo,
 468                        struct nouveau_bo *new_bo,
 469                        struct nouveau_page_flip_state *s,
 470                        struct nouveau_fence **pfence)
 471 {
 472         struct nouveau_fence_chan *fctx = chan->fence;
 473         struct nouveau_drm *drm = chan->drm;
 474         struct drm_device *dev = drm->dev;
 475         unsigned long flags;
 476         int ret;
 477
 478         /* Queue it to the pending list */
 479         spin_lock_irqsave(&dev->event_lock, flags);
 480         list_add_tail(&s->head, &fctx->flip);
 481         spin_unlock_irqrestore(&dev->event_lock, flags);
 482
 483         /* Synchronize with the old framebuffer */
 484         ret = nouveau_fence_sync(old_bo->bo.sync_obj, chan);
 485         if (ret)
 486                 goto fail;
 487
 488         /* Emit the pageflip */
 489         ret = RING_SPACE(chan, 3);
 490         if (ret)
 491                 goto fail;
 492
 493         if (nv_device(drm->device)->card_type < NV_C0) {
 494                 BEGIN_NV04(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
 495                 OUT_RING  (chan, 0x00000000);
 496                 OUT_RING  (chan, 0x00000000);
 497         } else {
 498                 BEGIN_NVC0(chan, 0, NV10_SUBCHAN_REF_CNT, 1);
 499                 OUT_RING  (chan, 0);
 500                 BEGIN_IMC0(chan, 0, NVSW_SUBCHAN_PAGE_FLIP, 0x0000);
 501         }
 502         FIRE_RING (chan);
 503
 504         ret = nouveau_fence_new(chan, false, pfence);
 505         if (ret)
 506                 goto fail;
 507
 508         return 0;
 509 fail:
 510         spin_lock_irqsave(&dev->event_lock, flags);
 511         list_del(&s->head);
 512         spin_unlock_irqrestore(&dev->event_lock, flags);
 513         return ret;
 514 }
 515
 516 int
 517 nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 518                        struct drm_pending_vblank_event *event)
 519 {
 520         struct drm_device *dev = crtc->dev;
 521         struct nouveau_drm *drm = nouveau_drm(dev);
 522         struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->fb)->nvbo;
 523         struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
 524         struct nouveau_page_flip_state *s;
 525         struct nouveau_channel *chan = NULL;
 526         struct nouveau_fence *fence;
 527         struct list_head res;
 528         struct ttm_validate_buffer res_val[2];
 529         struct ww_acquire_ctx ticket;
 530         int ret;
 531
 532         if (!drm->channel)
 533                 return -ENODEV;
 534
 535         s = kzalloc(sizeof(*s), GFP_KERNEL);
 536         if (!s)
 537                 return -ENOMEM;
 538
 539         /* Choose the channel the flip will be handled in */
 540         spin_lock(&old_bo->bo.bdev->fence_lock);
 541         fence = new_bo->bo.sync_obj;
 542         if (fence)
 543                 chan = fence->channel;
 544         if (!chan)
 545                 chan = drm->channel;
 546         spin_unlock(&old_bo->bo.bdev->fence_lock);
 547
 548         mutex_lock(&chan->cli->mutex);
 549
 550         if (new_bo != old_bo) {
 551                 ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM);
 552                 if (likely(!ret)) {
 553                         res_val[0].bo = &old_bo->bo;
 554                         res_val[1].bo = &new_bo->bo;
 555                         INIT_LIST_HEAD(&res);
 556                         list_add_tail(&res_val[0].head, &res);
 557                         list_add_tail(&res_val[1].head, &res);
 558                         ret = ttm_eu_reserve_buffers(&ticket, &res);
 559                         if (ret)
 560                                 nouveau_bo_unpin(new_bo);
 561                 }
 562         } else
 563                 ret = ttm_bo_reserve(&new_bo->bo, false, false, false, 0);
 564
 565         if (ret) {
 566                 mutex_unlock(&chan->cli->mutex);
 567                 goto fail_free;
 568         }
 569
 570         /* Initialize a page flip struct */
 571         *s = (struct nouveau_page_flip_state)
 572                 { { }, event, nouveau_crtc(crtc)->index,
 573                   fb->bits_per_pixel, fb->pitches[0], crtc->x, crtc->y,
 574                   new_bo->bo.offset };
 575
 576         /* Emit a page flip */
 577         if (nv_device(drm->device)->card_type >= NV_50) {
 578                 ret = nv50_display_flip_next(crtc, fb, chan, 0);
 579                 if (ret) {
 580                         mutex_unlock(&chan->cli->mutex);
 581                         goto fail_unreserve;
 582                 }
 583         }
 584
 585         ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
 586         mutex_unlock(&chan->cli->mutex);
 587         if (ret)
 588                 goto fail_unreserve;
 589
 590         /* Update the crtc struct and cleanup */
 591         crtc->fb = fb;
 592
 593         if (old_bo != new_bo) {
 594                 ttm_eu_fence_buffer_objects(&ticket, &res, fence);
 595                 nouveau_bo_unpin(old_bo);
 596         } else {
 597                 nouveau_bo_fence(new_bo, fence);
 598                 ttm_bo_unreserve(&new_bo->bo);
 599         }
 600         nouveau_fence_unref(&fence);
 601         return 0;
 602
 603 fail_unreserve:
 604         if (old_bo != new_bo) {
 605                 ttm_eu_backoff_reservation(&ticket, &res);
 606                 nouveau_bo_unpin(new_bo);
 607         } else
 608                 ttm_bo_unreserve(&new_bo->bo);
 609 fail_free:
 610         kfree(s);
 611         return ret;
 612 }
 613
 614 int
 615 nouveau_finish_page_flip(struct nouveau_channel *chan,
 616                          struct nouveau_page_flip_state *ps)
 617 {
 618         struct nouveau_fence_chan *fctx = chan->fence;
 619         struct nouveau_drm *drm = chan->drm;
 620         struct drm_device *dev = drm->dev;
 621         struct nouveau_page_flip_state *s;
 622         unsigned long flags;
 623
 624         spin_lock_irqsave(&dev->event_lock, flags);
 625
 626         if (list_empty(&fctx->flip)) {
 627                 NV_ERROR(drm, "unexpected pageflip\n");
 628                 spin_unlock_irqrestore(&dev->event_lock, flags);
 629                 return -EINVAL;
 630         }
 631
 632         s = list_first_entry(&fctx->flip, struct nouveau_page_flip_state, head);
 633         if (s->event)
 634                 drm_send_vblank_event(dev, -1, s->event);
 635
 636         list_del(&s->head);
 637         if (ps)
 638                 *ps = *s;
 639         kfree(s);
 640
 641         spin_unlock_irqrestore(&dev->event_lock, flags);
 642         return 0;
 643 }
 644
 645 int
 646 nouveau_flip_complete(void *data)
 647 {
 648         struct nouveau_channel *chan = data;
 649         struct nouveau_drm *drm = chan->drm;
 650         struct nouveau_page_flip_state state;
 651
 652         if (!nouveau_finish_page_flip(chan, &state)) {
 653                 if (nv_device(drm->device)->card_type < NV_50) {
 654                         nv_set_crtc_base(drm->dev, state.crtc, state.offset +
 655                                          state.y * state.pitch +
 656                                          state.x * state.bpp / 8);
 657                 }
 658         }
 659
 660         return 0;
 661 }
 662
 663 int
 664 nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
 665                             struct drm_mode_create_dumb *args)
 666 {
 667         struct nouveau_bo *bo;
 668         int ret;
 669
 670         args->pitch = roundup(args->width * (args->bpp / 8), 256);
 671         args->size = args->pitch * args->height;
 672         args->size = roundup(args->size, PAGE_SIZE);
 673
 674         ret = nouveau_gem_new(dev, args->size, 0, NOUVEAU_GEM_DOMAIN_VRAM, 0, 0, &bo);
 675         if (ret)
 676                 return ret;
 677
 678         ret = drm_gem_handle_create(file_priv, bo->gem, &args->handle);
 679         drm_gem_object_unreference_unlocked(bo->gem);
 680         return ret;
 681 }
 682
 683 int
 684 nouveau_display_dumb_destroy(struct drm_file *file_priv, struct drm_device *dev,
 685                              uint32_t handle)
 686 {
 687         return drm_gem_handle_delete(file_priv, handle);
 688 }
 689
 690 int
 691 nouveau_display_dumb_map_offset(struct drm_file *file_priv,
 692                                 struct drm_device *dev,
 693                                 uint32_t handle, uint64_t *poffset)
 694 {
 695         struct drm_gem_object *gem;
 696
 697         gem = drm_gem_object_lookup(dev, file_priv, handle);
 698         if (gem) {
 699                 struct nouveau_bo *bo = gem->driver_private;
 700                 *poffset = bo->bo.addr_space_offset;
 701                 drm_gem_object_unreference_unlocked(gem);
 702                 return 0;
 703         }
 704
 705         return -ENOENT;
 706 }