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 "nouveau_fbcon.h"
  31 #include "nouveau_hw.h"
  32 #include "nouveau_crtc.h"
  33 #include "nouveau_dma.h"
  34 #include "nouveau_gem.h"
  35 #include "nouveau_connector.h"
  36 #include "nv50_display.h"
  37
  38 #include "nouveau_fence.h"
  39
  40 #include <subdev/bios/gpio.h>
  41 #include <subdev/gpio.h>
  42 #include <engine/disp.h>
  43
  44 static void
  45 nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb)
  46 {
  47         struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
  48
  49         if (fb->nvbo)
  50                 drm_gem_object_unreference_unlocked(fb->nvbo->gem);
  51
  52         drm_framebuffer_cleanup(drm_fb);
  53         kfree(fb);
  54 }
  55
  56 static int
  57 nouveau_user_framebuffer_create_handle(struct drm_framebuffer *drm_fb,
  58                                        struct drm_file *file_priv,
  59                                        unsigned int *handle)
  60 {
  61         struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
  62
  63         return drm_gem_handle_create(file_priv, fb->nvbo->gem, handle);
  64 }
  65
  66 static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
  67         .destroy = nouveau_user_framebuffer_destroy,
  68         .create_handle = nouveau_user_framebuffer_create_handle,
  69 };
  70
  71 int
  72 nouveau_framebuffer_init(struct drm_device *dev,
  73                          struct nouveau_framebuffer *nv_fb,
  74                          struct drm_mode_fb_cmd2 *mode_cmd,
  75                          struct nouveau_bo *nvbo)
  76 {
  77         struct nouveau_drm *drm = nouveau_drm(dev);
  78         struct drm_framebuffer *fb = &nv_fb->base;
  79         int ret;
  80
  81         ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
  82         if (ret) {
  83                 return ret;
  84         }
  85
  86         drm_helper_mode_fill_fb_struct(fb, mode_cmd);
  87         nv_fb->nvbo = nvbo;
  88
  89         if (nv_device(drm->device)->card_type >= NV_50) {
  90                 u32 tile_flags = nouveau_bo_tile_layout(nvbo);
  91                 if (tile_flags == 0x7a00 ||
  92                     tile_flags == 0xfe00)
  93                         nv_fb->r_dma = NvEvoFB32;
  94                 else
  95                 if (tile_flags == 0x7000)
  96                         nv_fb->r_dma = NvEvoFB16;
  97                 else
  98                         nv_fb->r_dma = NvEvoVRAM_LP;
  99
 100                 switch (fb->depth) {
 101                 case  8: nv_fb->r_format = 0x1e00; break;
 102                 case 15: nv_fb->r_format = 0xe900; break;
 103                 case 16: nv_fb->r_format = 0xe800; break;
 104                 case 24:
 105                 case 32: nv_fb->r_format = 0xcf00; break;
 106                 case 30: nv_fb->r_format = 0xd100; break;
 107                 default:
 108                          NV_ERROR(drm, "unknown depth %d\n", fb->depth);
 109                          return -EINVAL;
 110                 }
 111
 112                 if (nv_device(drm->device)->chipset == 0x50)
 113                         nv_fb->r_format |= (tile_flags << 8);
 114
 115                 if (!tile_flags) {
 116                         if (nv_device(drm->device)->card_type < NV_D0)
 117                                 nv_fb->r_pitch = 0x00100000 | fb->pitches[0];
 118                         else
 119                                 nv_fb->r_pitch = 0x01000000 | fb->pitches[0];
 120                 } else {
 121                         u32 mode = nvbo->tile_mode;
 122                         if (nv_device(drm->device)->card_type >= NV_C0)
 123                                 mode >>= 4;
 124                         nv_fb->r_pitch = ((fb->pitches[0] / 4) << 4) | mode;
 125                 }
 126         }
 127
 128         return 0;
 129 }
 130
 131 static struct drm_framebuffer *
 132 nouveau_user_framebuffer_create(struct drm_device *dev,
 133                                 struct drm_file *file_priv,
 134                                 struct drm_mode_fb_cmd2 *mode_cmd)
 135 {
 136         struct nouveau_framebuffer *nouveau_fb;
 137         struct drm_gem_object *gem;
 138         int ret;
 139
 140         gem = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
 141         if (!gem)
 142                 return ERR_PTR(-ENOENT);
 143
 144         nouveau_fb = kzalloc(sizeof(struct nouveau_framebuffer), GFP_KERNEL);
 145         if (!nouveau_fb)
 146                 return ERR_PTR(-ENOMEM);
 147
 148         ret = nouveau_framebuffer_init(dev, nouveau_fb, mode_cmd, nouveau_gem_object(gem));
 149         if (ret) {
 150                 drm_gem_object_unreference(gem);
 151                 return ERR_PTR(ret);
 152         }
 153
 154         return &nouveau_fb->base;
 155 }
 156
 157 static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
 158         .fb_create = nouveau_user_framebuffer_create,
 159         .output_poll_changed = nouveau_fbcon_output_poll_changed,
 160 };
 161
 162
 163 struct nouveau_drm_prop_enum_list {
 164         u8 gen_mask;
 165         int type;
 166         char *name;
 167 };
 168
 169 static struct nouveau_drm_prop_enum_list underscan[] = {
 170         { 6, UNDERSCAN_AUTO, "auto" },
 171         { 6, UNDERSCAN_OFF, "off" },
 172         { 6, UNDERSCAN_ON, "on" },
 173         {}
 174 };
 175
 176 static struct nouveau_drm_prop_enum_list dither_mode[] = {
 177         { 7, DITHERING_MODE_AUTO, "auto" },
 178         { 7, DITHERING_MODE_OFF, "off" },
 179         { 1, DITHERING_MODE_ON, "on" },
 180         { 6, DITHERING_MODE_STATIC2X2, "static 2x2" },
 181         { 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" },
 182         { 4, DITHERING_MODE_TEMPORAL, "temporal" },
 183         {}
 184 };
 185
 186 static struct nouveau_drm_prop_enum_list dither_depth[] = {
 187         { 6, DITHERING_DEPTH_AUTO, "auto" },
 188         { 6, DITHERING_DEPTH_6BPC, "6 bpc" },
 189         { 6, DITHERING_DEPTH_8BPC, "8 bpc" },
 190         {}
 191 };
 192
 193 #define PROP_ENUM(p,gen,n,list) do {                                           \
 194         struct nouveau_drm_prop_enum_list *l = (list);                         \
 195         int c = 0;                                                             \
 196         while (l->gen_mask) {                                                  \
 197                 if (l->gen_mask & (1 << (gen)))                                \
 198                         c++;                                                   \
 199                 l++;                                                           \
 200         }                                                                      \
 201         if (c) {                                                               \
 202                 p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c);        \
 203                 l = (list);                                                    \
 204                 c = 0;                                                         \
 205                 while (p && l->gen_mask) {                                     \
 206                         if (l->gen_mask & (1 << (gen))) {                      \
 207                                 drm_property_add_enum(p, c, l->type, l->name); \
 208                                 c++;                                           \
 209                         }                                                      \
 210                         l++;                                                   \
 211                 }                                                              \
 212         }                                                                      \
 213 } while(0)
 214
 215 int
 216 nouveau_display_init(struct drm_device *dev)
 217 {
 218         struct nouveau_drm *drm = nouveau_drm(dev);
 219         struct nouveau_display *disp = nouveau_display(dev);
 220         struct nouveau_gpio *gpio = nouveau_gpio(drm->device);
 221         struct drm_connector *connector;
 222         int ret;
 223
 224         ret = disp->init(dev);
 225         if (ret)
 226                 return ret;
 227
 228         /* enable polling for external displays */
 229         drm_kms_helper_poll_enable(dev);
 230
 231         /* enable hotplug interrupts */
 232         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 233                 struct nouveau_connector *conn = nouveau_connector(connector);
 234                 if (gpio)
 235                         gpio->irq(gpio, 0, conn->hpd, 0xff, true);
 236         }
 237
 238         return ret;
 239 }
 240
 241 void
 242 nouveau_display_fini(struct drm_device *dev)
 243 {
 244         struct nouveau_drm *drm = nouveau_drm(dev);
 245         struct nouveau_display *disp = nouveau_display(dev);
 246         struct nouveau_gpio *gpio = nouveau_gpio(drm->device);
 247         struct drm_connector *connector;
 248
 249         /* disable hotplug interrupts */
 250         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 251                 struct nouveau_connector *conn = nouveau_connector(connector);
 252                 if (gpio)
 253                         gpio->irq(gpio, 0, conn->hpd, 0xff, false);
 254         }
 255
 256         drm_kms_helper_poll_disable(dev);
 257         disp->fini(dev);
 258 }
 259
 260 static void
 261 nouveau_display_vblank_notify(void *data, int crtc)
 262 {
 263         drm_handle_vblank(data, crtc);
 264 }
 265
 266 static void
 267 nouveau_display_vblank_get(void *data, int crtc)
 268 {
 269         drm_vblank_get(data, crtc);
 270 }
 271
 272 static void
 273 nouveau_display_vblank_put(void *data, int crtc)
 274 {
 275         drm_vblank_put(data, crtc);
 276 }
 277
 278 int
 279 nouveau_display_create(struct drm_device *dev)
 280 {
 281         struct nouveau_drm *drm = nouveau_drm(dev);
 282         struct nouveau_disp *pdisp = nouveau_disp(drm->device);
 283         struct nouveau_display *disp;
 284         u32 pclass = dev->pdev->class >> 8;
 285         int ret, gen;
 286
 287         disp = drm->display = kzalloc(sizeof(*disp), GFP_KERNEL);
 288         if (!disp)
 289                 return -ENOMEM;
 290
 291         pdisp->vblank.data = dev;
 292         pdisp->vblank.notify = nouveau_display_vblank_notify;
 293         pdisp->vblank.get = nouveau_display_vblank_get;
 294         pdisp->vblank.put = nouveau_display_vblank_put;
 295
 296         drm_mode_config_init(dev);
 297         drm_mode_create_scaling_mode_property(dev);
 298         drm_mode_create_dvi_i_properties(dev);
 299
 300         if (nv_device(drm->device)->card_type < NV_50)
 301                 gen = 0;
 302         else
 303         if (nv_device(drm->device)->card_type < NV_D0)
 304                 gen = 1;
 305         else
 306                 gen = 2;
 307
 308         PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
 309         PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
 310         PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);
 311
 312         disp->underscan_hborder_property =
 313                 drm_property_create_range(dev, 0, "underscan hborder", 0, 128);
 314
 315         disp->underscan_vborder_property =
 316                 drm_property_create_range(dev, 0, "underscan vborder", 0, 128);
 317
 318         if (gen >= 1) {
 319                 /* -90..+90 */
 320                 disp->vibrant_hue_property =
 321                         drm_property_create_range(dev, 0, "vibrant hue", 0, 180);
 322
 323                 /* -100..+100 */
 324                 disp->color_vibrance_property =
 325                         drm_property_create_range(dev, 0, "color vibrance", 0, 200);
 326         }
 327
 328         dev->mode_config.funcs = &nouveau_mode_config_funcs;
 329         dev->mode_config.fb_base = pci_resource_start(dev->pdev, 1);
 330
 331         dev->mode_config.min_width = 0;
 332         dev->mode_config.min_height = 0;
 333         if (nv_device(drm->device)->card_type < NV_10) {
 334                 dev->mode_config.max_width = 2048;
 335                 dev->mode_config.max_height = 2048;
 336         } else
 337         if (nv_device(drm->device)->card_type < NV_50) {
 338                 dev->mode_config.max_width = 4096;
 339                 dev->mode_config.max_height = 4096;
 340         } else {
 341                 dev->mode_config.max_width = 8192;
 342                 dev->mode_config.max_height = 8192;
 343         }
 344
 345         dev->mode_config.preferred_depth = 24;
 346         dev->mode_config.prefer_shadow = 1;
 347
 348         drm_kms_helper_poll_init(dev);
 349         drm_kms_helper_poll_disable(dev);
 350
 351         if (nouveau_modeset == 1 ||
 352             (nouveau_modeset < 0 && pclass == PCI_CLASS_DISPLAY_VGA)) {
 353                 if (nv_device(drm->device)->card_type < NV_50)
 354                         ret = nv04_display_create(dev);
 355                 else
 356                         ret = nv50_display_create(dev);
 357                 if (ret)
 358                         goto disp_create_err;
 359
 360                 if (dev->mode_config.num_crtc) {
 361                         ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
 362                         if (ret)
 363                                 goto vblank_err;
 364                 }
 365
 366                 nouveau_backlight_init(dev);
 367         }
 368
 369         return 0;
 370
 371 vblank_err:
 372         disp->dtor(dev);
 373 disp_create_err:
 374         drm_kms_helper_poll_fini(dev);
 375         drm_mode_config_cleanup(dev);
 376         return ret;
 377 }
 378
 379 void
 380 nouveau_display_destroy(struct drm_device *dev)
 381 {
 382         struct nouveau_display *disp = nouveau_display(dev);
 383
 384         nouveau_backlight_exit(dev);
 385         drm_vblank_cleanup(dev);
 386
 387         drm_kms_helper_poll_fini(dev);
 388         drm_mode_config_cleanup(dev);
 389
 390         if (disp->dtor)
 391                 disp->dtor(dev);
 392
 393         nouveau_drm(dev)->display = NULL;
 394         kfree(disp);
 395 }
 396
 397 int
 398 nouveau_display_suspend(struct drm_device *dev)
 399 {
 400         struct nouveau_drm *drm = nouveau_drm(dev);
 401         struct drm_crtc *crtc;
 402
 403         nouveau_display_fini(dev);
 404
 405         NV_INFO(drm, "unpinning framebuffer(s)...\n");
 406         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 407                 struct nouveau_framebuffer *nouveau_fb;
 408
 409                 nouveau_fb = nouveau_framebuffer(crtc->fb);
 410                 if (!nouveau_fb || !nouveau_fb->nvbo)
 411                         continue;
 412
 413                 nouveau_bo_unpin(nouveau_fb->nvbo);
 414         }
 415
 416         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 417                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 418
 419                 nouveau_bo_unmap(nv_crtc->cursor.nvbo);
 420                 nouveau_bo_unpin(nv_crtc->cursor.nvbo);
 421         }
 422
 423         return 0;
 424 }
 425
 426 void
 427 nouveau_display_resume(struct drm_device *dev)
 428 {
 429         struct nouveau_drm *drm = nouveau_drm(dev);
 430         struct drm_crtc *crtc;
 431         int ret;
 432
 433         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 434                 struct nouveau_framebuffer *nouveau_fb;
 435
 436                 nouveau_fb = nouveau_framebuffer(crtc->fb);
 437                 if (!nouveau_fb || !nouveau_fb->nvbo)
 438                         continue;
 439
 440                 nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM);
 441         }
 442
 443         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 444                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 445
 446                 ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM);
 447                 if (!ret)
 448                         ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
 449                 if (ret)
 450                         NV_ERROR(drm, "Could not pin/map cursor.\n");
 451         }
 452
 453         nouveau_fbcon_set_suspend(dev, 0);
 454         nouveau_fbcon_zfill_all(dev);
 455
 456         nouveau_display_init(dev);
 457
 458         /* Force CLUT to get re-loaded during modeset */
 459         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 460                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 461
 462                 nv_crtc->lut.depth = 0;
 463         }
 464
 465         drm_helper_resume_force_mode(dev);
 466
 467         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 468                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 469                 u32 offset = nv_crtc->cursor.nvbo->bo.offset;
 470
 471                 nv_crtc->cursor.set_offset(nv_crtc, offset);
 472                 nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
 473                                                  nv_crtc->cursor_saved_y);
 474         }
 475 }
 476
 477 int
 478 nouveau_vblank_enable(struct drm_device *dev, int crtc)
 479 {
 480         struct nouveau_device *device = nouveau_dev(dev);
 481
 482         if (device->card_type >= NV_D0)
 483                 nv_mask(device, 0x6100c0 + (crtc * 0x800), 1, 1);
 484         else
 485         if (device->card_type >= NV_50)
 486                 nv_mask(device, NV50_PDISPLAY_INTR_EN_1, 0,
 487                         NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc));
 488         else
 489                 NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0,
 490                             NV_PCRTC_INTR_0_VBLANK);
 491
 492         return 0;
 493 }
 494
 495 void
 496 nouveau_vblank_disable(struct drm_device *dev, int crtc)
 497 {
 498         struct nouveau_device *device = nouveau_dev(dev);
 499
 500         if (device->card_type >= NV_D0)
 501                 nv_mask(device, 0x6100c0 + (crtc * 0x800), 1, 0);
 502         else
 503         if (device->card_type >= NV_50)
 504                 nv_mask(device, NV50_PDISPLAY_INTR_EN_1,
 505                         NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc), 0);
 506         else
 507                 NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0, 0);
 508 }
 509
 510 static int
 511 nouveau_page_flip_reserve(struct nouveau_bo *old_bo,
 512                           struct nouveau_bo *new_bo)
 513 {
 514         int ret;
 515
 516         ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM);
 517         if (ret)
 518                 return ret;
 519
 520         ret = ttm_bo_reserve(&new_bo->bo, false, false, false, 0);
 521         if (ret)
 522                 goto fail;
 523
 524         if (likely(old_bo != new_bo)) {
 525                 ret = ttm_bo_reserve(&old_bo->bo, false, false, false, 0);
 526                 if (ret)
 527                         goto fail_unreserve;
 528         }
 529
 530         return 0;
 531
 532 fail_unreserve:
 533         ttm_bo_unreserve(&new_bo->bo);
 534 fail:
 535         nouveau_bo_unpin(new_bo);
 536         return ret;
 537 }
 538
 539 static void
 540 nouveau_page_flip_unreserve(struct nouveau_bo *old_bo,
 541                             struct nouveau_bo *new_bo,
 542                             struct nouveau_fence *fence)
 543 {
 544         nouveau_bo_fence(new_bo, fence);
 545         ttm_bo_unreserve(&new_bo->bo);
 546
 547         if (likely(old_bo != new_bo)) {
 548                 nouveau_bo_fence(old_bo, fence);
 549                 ttm_bo_unreserve(&old_bo->bo);
 550         }
 551
 552         nouveau_bo_unpin(old_bo);
 553 }
 554
 555 static int
 556 nouveau_page_flip_emit(struct nouveau_channel *chan,
 557                        struct nouveau_bo *old_bo,
 558                        struct nouveau_bo *new_bo,
 559                        struct nouveau_page_flip_state *s,
 560                        struct nouveau_fence **pfence)
 561 {
 562         struct nouveau_fence_chan *fctx = chan->fence;
 563         struct nouveau_drm *drm = chan->drm;
 564         struct drm_device *dev = drm->dev;
 565         unsigned long flags;
 566         int ret;
 567
 568         /* Queue it to the pending list */
 569         spin_lock_irqsave(&dev->event_lock, flags);
 570         list_add_tail(&s->head, &fctx->flip);
 571         spin_unlock_irqrestore(&dev->event_lock, flags);
 572
 573         /* Synchronize with the old framebuffer */
 574         ret = nouveau_fence_sync(old_bo->bo.sync_obj, chan);
 575         if (ret)
 576                 goto fail;
 577
 578         /* Emit the pageflip */
 579         ret = RING_SPACE(chan, 3);
 580         if (ret)
 581                 goto fail;
 582
 583         if (nv_device(drm->device)->card_type < NV_C0) {
 584                 BEGIN_NV04(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
 585                 OUT_RING  (chan, 0x00000000);
 586                 OUT_RING  (chan, 0x00000000);
 587         } else {
 588                 BEGIN_NVC0(chan, 0, NV10_SUBCHAN_REF_CNT, 1);
 589                 OUT_RING  (chan, 0);
 590                 BEGIN_IMC0(chan, 0, NVSW_SUBCHAN_PAGE_FLIP, 0x0000);
 591         }
 592         FIRE_RING (chan);
 593
 594         ret = nouveau_fence_new(chan, pfence);
 595         if (ret)
 596                 goto fail;
 597
 598         return 0;
 599 fail:
 600         spin_lock_irqsave(&dev->event_lock, flags);
 601         list_del(&s->head);
 602         spin_unlock_irqrestore(&dev->event_lock, flags);
 603         return ret;
 604 }
 605
 606 int
 607 nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 608                        struct drm_pending_vblank_event *event)
 609 {
 610         struct drm_device *dev = crtc->dev;
 611         struct nouveau_drm *drm = nouveau_drm(dev);
 612         struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->fb)->nvbo;
 613         struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
 614         struct nouveau_page_flip_state *s;
 615         struct nouveau_channel *chan = NULL;
 616         struct nouveau_fence *fence;
 617         int ret;
 618
 619         if (!drm->channel)
 620                 return -ENODEV;
 621
 622         s = kzalloc(sizeof(*s), GFP_KERNEL);
 623         if (!s)
 624                 return -ENOMEM;
 625
 626         /* Don't let the buffers go away while we flip */
 627         ret = nouveau_page_flip_reserve(old_bo, new_bo);
 628         if (ret)
 629                 goto fail_free;
 630
 631         /* Initialize a page flip struct */
 632         *s = (struct nouveau_page_flip_state)
 633                 { { }, event, nouveau_crtc(crtc)->index,
 634                   fb->bits_per_pixel, fb->pitches[0], crtc->x, crtc->y,
 635                   new_bo->bo.offset };
 636
 637         /* Choose the channel the flip will be handled in */
 638         fence = new_bo->bo.sync_obj;
 639         if (fence)
 640                 chan = fence->channel;
 641         if (!chan)
 642                 chan = drm->channel;
 643         mutex_lock(&chan->cli->mutex);
 644
 645         /* Emit a page flip */
 646         if (nv_device(drm->device)->card_type >= NV_50) {
 647                 ret = nv50_display_flip_next(crtc, fb, chan, 0);
 648                 if (ret) {
 649                         mutex_unlock(&chan->cli->mutex);
 650                         goto fail_unreserve;
 651                 }
 652         }
 653
 654         ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
 655         mutex_unlock(&chan->cli->mutex);
 656         if (ret)
 657                 goto fail_unreserve;
 658
 659         /* Update the crtc struct and cleanup */
 660         crtc->fb = fb;
 661
 662         nouveau_page_flip_unreserve(old_bo, new_bo, fence);
 663         nouveau_fence_unref(&fence);
 664         return 0;
 665
 666 fail_unreserve:
 667         nouveau_page_flip_unreserve(old_bo, new_bo, NULL);
 668 fail_free:
 669         kfree(s);
 670         return ret;
 671 }
 672
 673 int
 674 nouveau_finish_page_flip(struct nouveau_channel *chan,
 675                          struct nouveau_page_flip_state *ps)
 676 {
 677         struct nouveau_fence_chan *fctx = chan->fence;
 678         struct nouveau_drm *drm = chan->drm;
 679         struct drm_device *dev = drm->dev;
 680         struct nouveau_page_flip_state *s;
 681         unsigned long flags;
 682
 683         spin_lock_irqsave(&dev->event_lock, flags);
 684
 685         if (list_empty(&fctx->flip)) {
 686                 NV_ERROR(drm, "unexpected pageflip\n");
 687                 spin_unlock_irqrestore(&dev->event_lock, flags);
 688                 return -EINVAL;
 689         }
 690
 691         s = list_first_entry(&fctx->flip, struct nouveau_page_flip_state, head);
 692         if (s->event) {
 693                 struct drm_pending_vblank_event *e = s->event;
 694                 struct timeval now;
 695
 696                 do_gettimeofday(&now);
 697                 e->event.sequence = 0;
 698                 e->event.tv_sec = now.tv_sec;
 699                 e->event.tv_usec = now.tv_usec;
 700                 list_add_tail(&e->base.link, &e->base.file_priv->event_list);
 701                 wake_up_interruptible(&e->base.file_priv->event_wait);
 702         }
 703
 704         list_del(&s->head);
 705         if (ps)
 706                 *ps = *s;
 707         kfree(s);
 708
 709         spin_unlock_irqrestore(&dev->event_lock, flags);
 710         return 0;
 711 }
 712
 713 int
 714 nouveau_flip_complete(void *data)
 715 {
 716         struct nouveau_channel *chan = data;
 717         struct nouveau_drm *drm = chan->drm;
 718         struct nouveau_page_flip_state state;
 719
 720         if (!nouveau_finish_page_flip(chan, &state)) {
 721                 if (nv_device(drm->device)->card_type < NV_50) {
 722                         nv_set_crtc_base(drm->dev, state.crtc, state.offset +
 723                                          state.y * state.pitch +
 724                                          state.x * state.bpp / 8);
 725                 }
 726         }
 727
 728         return 0;
 729 }
 730
 731 int
 732 nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
 733                             struct drm_mode_create_dumb *args)
 734 {
 735         struct nouveau_bo *bo;
 736         int ret;
 737
 738         args->pitch = roundup(args->width * (args->bpp / 8), 256);
 739         args->size = args->pitch * args->height;
 740         args->size = roundup(args->size, PAGE_SIZE);
 741
 742         ret = nouveau_gem_new(dev, args->size, 0, NOUVEAU_GEM_DOMAIN_VRAM, 0, 0, &bo);
 743         if (ret)
 744                 return ret;
 745
 746         ret = drm_gem_handle_create(file_priv, bo->gem, &args->handle);
 747         drm_gem_object_unreference_unlocked(bo->gem);
 748         return ret;
 749 }
 750
 751 int
 752 nouveau_display_dumb_destroy(struct drm_file *file_priv, struct drm_device *dev,
 753                              uint32_t handle)
 754 {
 755         return drm_gem_handle_delete(file_priv, handle);
 756 }
 757
 758 int
 759 nouveau_display_dumb_map_offset(struct drm_file *file_priv,
 760                                 struct drm_device *dev,
 761                                 uint32_t handle, uint64_t *poffset)
 762 {
 763         struct drm_gem_object *gem;
 764
 765         gem = drm_gem_object_lookup(dev, file_priv, handle);
 766         if (gem) {
 767                 struct nouveau_bo *bo = gem->driver_private;
 768                 *poffset = bo->bo.addr_space_offset;
 769                 drm_gem_object_unreference_unlocked(gem);
 770                 return 0;
 771         }
 772
 773         return -ENOENT;
 774 }