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 = NV50_EVO_CRTC_FB_DEPTH_8; break;
 102                 case 15: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_15; break;
 103                 case 16: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_16; break;
 104                 case 24:
 105                 case 32: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_24; break;
 106                 case 30: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_30; 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         /* power on internal panel if it's not already.  the init tables of
 229          * some vbios default this to off for some reason, causing the
 230          * panel to not work after resume
 231          */
 232         if (gpio && gpio->get(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff) == 0) {
 233                 gpio->set(gpio, 0, DCB_GPIO_PANEL_POWER, 0xff, 1);
 234                 msleep(300);
 235         }
 236
 237         /* enable polling for external displays */
 238         drm_kms_helper_poll_enable(dev);
 239
 240         /* enable hotplug interrupts */
 241         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 242                 struct nouveau_connector *conn = nouveau_connector(connector);
 243                 if (gpio)
 244                         gpio->irq(gpio, 0, conn->hpd, 0xff, true);
 245         }
 246
 247         return ret;
 248 }
 249
 250 void
 251 nouveau_display_fini(struct drm_device *dev)
 252 {
 253         struct nouveau_drm *drm = nouveau_drm(dev);
 254         struct nouveau_display *disp = nouveau_display(dev);
 255         struct nouveau_gpio *gpio = nouveau_gpio(drm->device);
 256         struct drm_connector *connector;
 257
 258         /* disable hotplug interrupts */
 259         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 260                 struct nouveau_connector *conn = nouveau_connector(connector);
 261                 if (gpio)
 262                         gpio->irq(gpio, 0, conn->hpd, 0xff, false);
 263         }
 264
 265         drm_kms_helper_poll_disable(dev);
 266         disp->fini(dev);
 267 }
 268
 269 static void
 270 nouveau_display_vblank_notify(void *data, int crtc)
 271 {
 272         drm_handle_vblank(data, crtc);
 273 }
 274
 275 static void
 276 nouveau_display_vblank_get(void *data, int crtc)
 277 {
 278         drm_vblank_get(data, crtc);
 279 }
 280
 281 static void
 282 nouveau_display_vblank_put(void *data, int crtc)
 283 {
 284         drm_vblank_put(data, crtc);
 285 }
 286
 287 int
 288 nouveau_display_create(struct drm_device *dev)
 289 {
 290         struct nouveau_drm *drm = nouveau_drm(dev);
 291         struct nouveau_disp *pdisp = nouveau_disp(drm->device);
 292         struct nouveau_display *disp;
 293         u32 pclass = dev->pdev->class >> 8;
 294         int ret, gen;
 295
 296         disp = drm->display = kzalloc(sizeof(*disp), GFP_KERNEL);
 297         if (!disp)
 298                 return -ENOMEM;
 299
 300         pdisp->vblank.data = dev;
 301         pdisp->vblank.notify = nouveau_display_vblank_notify;
 302         pdisp->vblank.get = nouveau_display_vblank_get;
 303         pdisp->vblank.put = nouveau_display_vblank_put;
 304
 305         drm_mode_config_init(dev);
 306         drm_mode_create_scaling_mode_property(dev);
 307         drm_mode_create_dvi_i_properties(dev);
 308
 309         if (nv_device(drm->device)->card_type < NV_50)
 310                 gen = 0;
 311         else
 312         if (nv_device(drm->device)->card_type < NV_D0)
 313                 gen = 1;
 314         else
 315                 gen = 2;
 316
 317         PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
 318         PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
 319         PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);
 320
 321         disp->underscan_hborder_property =
 322                 drm_property_create_range(dev, 0, "underscan hborder", 0, 128);
 323
 324         disp->underscan_vborder_property =
 325                 drm_property_create_range(dev, 0, "underscan vborder", 0, 128);
 326
 327         if (gen == 1) {
 328                 disp->vibrant_hue_property =
 329                         drm_property_create(dev, DRM_MODE_PROP_RANGE,
 330                                             "vibrant hue", 2);
 331                 disp->vibrant_hue_property->values[0] = 0;
 332                 disp->vibrant_hue_property->values[1] = 180; /* -90..+90 */
 333
 334                 disp->color_vibrance_property =
 335                         drm_property_create(dev, DRM_MODE_PROP_RANGE,
 336                                             "color vibrance", 2);
 337                 disp->color_vibrance_property->values[0] = 0;
 338                 disp->color_vibrance_property->values[1] = 200; /* -100..+100 */
 339         }
 340
 341         dev->mode_config.funcs = &nouveau_mode_config_funcs;
 342         dev->mode_config.fb_base = pci_resource_start(dev->pdev, 1);
 343
 344         dev->mode_config.min_width = 0;
 345         dev->mode_config.min_height = 0;
 346         if (nv_device(drm->device)->card_type < NV_10) {
 347                 dev->mode_config.max_width = 2048;
 348                 dev->mode_config.max_height = 2048;
 349         } else
 350         if (nv_device(drm->device)->card_type < NV_50) {
 351                 dev->mode_config.max_width = 4096;
 352                 dev->mode_config.max_height = 4096;
 353         } else {
 354                 dev->mode_config.max_width = 8192;
 355                 dev->mode_config.max_height = 8192;
 356         }
 357
 358         dev->mode_config.preferred_depth = 24;
 359         dev->mode_config.prefer_shadow = 1;
 360
 361         drm_kms_helper_poll_init(dev);
 362         drm_kms_helper_poll_disable(dev);
 363
 364         if (nouveau_modeset == 1 ||
 365             (nouveau_modeset < 0 && pclass == PCI_CLASS_DISPLAY_VGA)) {
 366                 if (nv_device(drm->device)->card_type < NV_50)
 367                         ret = nv04_display_create(dev);
 368                 else
 369                 if (nv_device(drm->device)->card_type < NV_D0)
 370                         ret = nv50_display_create(dev);
 371                 else
 372                         ret = nvd0_display_create(dev);
 373                 if (ret)
 374                         goto disp_create_err;
 375
 376                 if (dev->mode_config.num_crtc) {
 377                         ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
 378                         if (ret)
 379                                 goto vblank_err;
 380                 }
 381
 382                 nouveau_backlight_init(dev);
 383         }
 384
 385         return 0;
 386
 387 vblank_err:
 388         disp->dtor(dev);
 389 disp_create_err:
 390         drm_kms_helper_poll_fini(dev);
 391         drm_mode_config_cleanup(dev);
 392         return ret;
 393 }
 394
 395 void
 396 nouveau_display_destroy(struct drm_device *dev)
 397 {
 398         struct nouveau_display *disp = nouveau_display(dev);
 399
 400         nouveau_backlight_exit(dev);
 401         drm_vblank_cleanup(dev);
 402
 403         if (disp->dtor)
 404                 disp->dtor(dev);
 405
 406         drm_kms_helper_poll_fini(dev);
 407         drm_mode_config_cleanup(dev);
 408         nouveau_drm(dev)->display = NULL;
 409         kfree(disp);
 410 }
 411
 412 int
 413 nouveau_display_suspend(struct drm_device *dev)
 414 {
 415         struct nouveau_drm *drm = nouveau_drm(dev);
 416         struct drm_crtc *crtc;
 417
 418         nouveau_display_fini(dev);
 419
 420         NV_INFO(drm, "unpinning framebuffer(s)...\n");
 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_unpin(nouveau_fb->nvbo);
 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                 nouveau_bo_unmap(nv_crtc->cursor.nvbo);
 435                 nouveau_bo_unpin(nv_crtc->cursor.nvbo);
 436         }
 437
 438         return 0;
 439 }
 440
 441 void
 442 nouveau_display_resume(struct drm_device *dev)
 443 {
 444         struct nouveau_drm *drm = nouveau_drm(dev);
 445         struct drm_crtc *crtc;
 446         int ret;
 447
 448         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 449                 struct nouveau_framebuffer *nouveau_fb;
 450
 451                 nouveau_fb = nouveau_framebuffer(crtc->fb);
 452                 if (!nouveau_fb || !nouveau_fb->nvbo)
 453                         continue;
 454
 455                 nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM);
 456         }
 457
 458         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 459                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 460
 461                 ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM);
 462                 if (!ret)
 463                         ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
 464                 if (ret)
 465                         NV_ERROR(drm, "Could not pin/map cursor.\n");
 466         }
 467
 468         nouveau_fbcon_set_suspend(dev, 0);
 469         nouveau_fbcon_zfill_all(dev);
 470
 471         nouveau_display_init(dev);
 472
 473         /* Force CLUT to get re-loaded during modeset */
 474         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 475                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 476
 477                 nv_crtc->lut.depth = 0;
 478         }
 479
 480         drm_helper_resume_force_mode(dev);
 481
 482         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 483                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 484                 u32 offset = nv_crtc->cursor.nvbo->bo.offset;
 485
 486                 nv_crtc->cursor.set_offset(nv_crtc, offset);
 487                 nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
 488                                                  nv_crtc->cursor_saved_y);
 489         }
 490 }
 491
 492 int
 493 nouveau_vblank_enable(struct drm_device *dev, int crtc)
 494 {
 495         struct nouveau_device *device = nouveau_dev(dev);
 496
 497         if (device->card_type >= NV_D0)
 498                 nv_mask(device, 0x6100c0 + (crtc * 0x800), 1, 1);
 499         else
 500         if (device->card_type >= NV_50)
 501                 nv_mask(device, NV50_PDISPLAY_INTR_EN_1, 0,
 502                         NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc));
 503         else
 504                 NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0,
 505                             NV_PCRTC_INTR_0_VBLANK);
 506
 507         return 0;
 508 }
 509
 510 void
 511 nouveau_vblank_disable(struct drm_device *dev, int crtc)
 512 {
 513         struct nouveau_device *device = nouveau_dev(dev);
 514
 515         if (device->card_type >= NV_D0)
 516                 nv_mask(device, 0x6100c0 + (crtc * 0x800), 1, 0);
 517         else
 518         if (device->card_type >= NV_50)
 519                 nv_mask(device, NV50_PDISPLAY_INTR_EN_1,
 520                         NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc), 0);
 521         else
 522                 NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0, 0);
 523 }
 524
 525 static int
 526 nouveau_page_flip_reserve(struct nouveau_bo *old_bo,
 527                           struct nouveau_bo *new_bo)
 528 {
 529         int ret;
 530
 531         ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM);
 532         if (ret)
 533                 return ret;
 534
 535         ret = ttm_bo_reserve(&new_bo->bo, false, false, false, 0);
 536         if (ret)
 537                 goto fail;
 538
 539         if (likely(old_bo != new_bo)) {
 540                 ret = ttm_bo_reserve(&old_bo->bo, false, false, false, 0);
 541                 if (ret)
 542                         goto fail_unreserve;
 543         }
 544
 545         return 0;
 546
 547 fail_unreserve:
 548         ttm_bo_unreserve(&new_bo->bo);
 549 fail:
 550         nouveau_bo_unpin(new_bo);
 551         return ret;
 552 }
 553
 554 static void
 555 nouveau_page_flip_unreserve(struct nouveau_bo *old_bo,
 556                             struct nouveau_bo *new_bo,
 557                             struct nouveau_fence *fence)
 558 {
 559         nouveau_bo_fence(new_bo, fence);
 560         ttm_bo_unreserve(&new_bo->bo);
 561
 562         if (likely(old_bo != new_bo)) {
 563                 nouveau_bo_fence(old_bo, fence);
 564                 ttm_bo_unreserve(&old_bo->bo);
 565         }
 566
 567         nouveau_bo_unpin(old_bo);
 568 }
 569
 570 static int
 571 nouveau_page_flip_emit(struct nouveau_channel *chan,
 572                        struct nouveau_bo *old_bo,
 573                        struct nouveau_bo *new_bo,
 574                        struct nouveau_page_flip_state *s,
 575                        struct nouveau_fence **pfence)
 576 {
 577         struct nouveau_fence_chan *fctx = chan->fence;
 578         struct nouveau_drm *drm = chan->drm;
 579         struct drm_device *dev = drm->dev;
 580         unsigned long flags;
 581         int ret;
 582
 583         /* Queue it to the pending list */
 584         spin_lock_irqsave(&dev->event_lock, flags);
 585         list_add_tail(&s->head, &fctx->flip);
 586         spin_unlock_irqrestore(&dev->event_lock, flags);
 587
 588         /* Synchronize with the old framebuffer */
 589         ret = nouveau_fence_sync(old_bo->bo.sync_obj, chan);
 590         if (ret)
 591                 goto fail;
 592
 593         /* Emit the pageflip */
 594         ret = RING_SPACE(chan, 3);
 595         if (ret)
 596                 goto fail;
 597
 598         if (nv_device(drm->device)->card_type < NV_C0) {
 599                 BEGIN_NV04(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
 600                 OUT_RING  (chan, 0x00000000);
 601                 OUT_RING  (chan, 0x00000000);
 602         } else {
 603                 BEGIN_NVC0(chan, 0, NV10_SUBCHAN_REF_CNT, 1);
 604                 OUT_RING  (chan, 0);
 605                 BEGIN_IMC0(chan, 0, NVSW_SUBCHAN_PAGE_FLIP, 0x0000);
 606         }
 607         FIRE_RING (chan);
 608
 609         ret = nouveau_fence_new(chan, pfence);
 610         if (ret)
 611                 goto fail;
 612
 613         return 0;
 614 fail:
 615         spin_lock_irqsave(&dev->event_lock, flags);
 616         list_del(&s->head);
 617         spin_unlock_irqrestore(&dev->event_lock, flags);
 618         return ret;
 619 }
 620
 621 int
 622 nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 623                        struct drm_pending_vblank_event *event)
 624 {
 625         struct drm_device *dev = crtc->dev;
 626         struct nouveau_drm *drm = nouveau_drm(dev);
 627         struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->fb)->nvbo;
 628         struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
 629         struct nouveau_page_flip_state *s;
 630         struct nouveau_channel *chan = NULL;
 631         struct nouveau_fence *fence;
 632         int ret;
 633
 634         if (!drm->channel)
 635                 return -ENODEV;
 636
 637         s = kzalloc(sizeof(*s), GFP_KERNEL);
 638         if (!s)
 639                 return -ENOMEM;
 640
 641         /* Don't let the buffers go away while we flip */
 642         ret = nouveau_page_flip_reserve(old_bo, new_bo);
 643         if (ret)
 644                 goto fail_free;
 645
 646         /* Initialize a page flip struct */
 647         *s = (struct nouveau_page_flip_state)
 648                 { { }, event, nouveau_crtc(crtc)->index,
 649                   fb->bits_per_pixel, fb->pitches[0], crtc->x, crtc->y,
 650                   new_bo->bo.offset };
 651
 652         /* Choose the channel the flip will be handled in */
 653         fence = new_bo->bo.sync_obj;
 654         if (fence)
 655                 chan = fence->channel;
 656         if (!chan)
 657                 chan = drm->channel;
 658         mutex_lock(&chan->cli->mutex);
 659
 660         /* Emit a page flip */
 661         if (nv_device(drm->device)->card_type >= NV_50) {
 662                 if (nv_device(drm->device)->card_type >= NV_D0)
 663                         ret = nvd0_display_flip_next(crtc, fb, chan, 0);
 664                 else
 665                         ret = nv50_display_flip_next(crtc, fb, chan);
 666                 if (ret) {
 667                         mutex_unlock(&chan->cli->mutex);
 668                         goto fail_unreserve;
 669                 }
 670         }
 671
 672         ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
 673         mutex_unlock(&chan->cli->mutex);
 674         if (ret)
 675                 goto fail_unreserve;
 676
 677         /* Update the crtc struct and cleanup */
 678         crtc->fb = fb;
 679
 680         nouveau_page_flip_unreserve(old_bo, new_bo, fence);
 681         nouveau_fence_unref(&fence);
 682         return 0;
 683
 684 fail_unreserve:
 685         nouveau_page_flip_unreserve(old_bo, new_bo, NULL);
 686 fail_free:
 687         kfree(s);
 688         return ret;
 689 }
 690
 691 int
 692 nouveau_finish_page_flip(struct nouveau_channel *chan,
 693                          struct nouveau_page_flip_state *ps)
 694 {
 695         struct nouveau_fence_chan *fctx = chan->fence;
 696         struct nouveau_drm *drm = chan->drm;
 697         struct drm_device *dev = drm->dev;
 698         struct nouveau_page_flip_state *s;
 699         unsigned long flags;
 700
 701         spin_lock_irqsave(&dev->event_lock, flags);
 702
 703         if (list_empty(&fctx->flip)) {
 704                 NV_ERROR(drm, "unexpected pageflip\n");
 705                 spin_unlock_irqrestore(&dev->event_lock, flags);
 706                 return -EINVAL;
 707         }
 708
 709         s = list_first_entry(&fctx->flip, struct nouveau_page_flip_state, head);
 710         if (s->event) {
 711                 struct drm_pending_vblank_event *e = s->event;
 712                 struct timeval now;
 713
 714                 do_gettimeofday(&now);
 715                 e->event.sequence = 0;
 716                 e->event.tv_sec = now.tv_sec;
 717                 e->event.tv_usec = now.tv_usec;
 718                 list_add_tail(&e->base.link, &e->base.file_priv->event_list);
 719                 wake_up_interruptible(&e->base.file_priv->event_wait);
 720         }
 721
 722         list_del(&s->head);
 723         if (ps)
 724                 *ps = *s;
 725         kfree(s);
 726
 727         spin_unlock_irqrestore(&dev->event_lock, flags);
 728         return 0;
 729 }
 730
 731 int
 732 nouveau_flip_complete(void *data)
 733 {
 734         struct nouveau_channel *chan = data;
 735         struct nouveau_drm *drm = chan->drm;
 736         struct nouveau_page_flip_state state;
 737
 738         if (!nouveau_finish_page_flip(chan, &state)) {
 739                 if (nv_device(drm->device)->card_type < NV_50) {
 740                         nv_set_crtc_base(drm->dev, state.crtc, state.offset +
 741                                          state.y * state.pitch +
 742                                          state.x * state.bpp / 8);
 743                 }
 744         }
 745
 746         return 0;
 747 }
 748
 749 int
 750 nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
 751                             struct drm_mode_create_dumb *args)
 752 {
 753         struct nouveau_bo *bo;
 754         int ret;
 755
 756         args->pitch = roundup(args->width * (args->bpp / 8), 256);
 757         args->size = args->pitch * args->height;
 758         args->size = roundup(args->size, PAGE_SIZE);
 759
 760         ret = nouveau_gem_new(dev, args->size, 0, NOUVEAU_GEM_DOMAIN_VRAM, 0, 0, &bo);
 761         if (ret)
 762                 return ret;
 763
 764         ret = drm_gem_handle_create(file_priv, bo->gem, &args->handle);
 765         drm_gem_object_unreference_unlocked(bo->gem);
 766         return ret;
 767 }
 768
 769 int
 770 nouveau_display_dumb_destroy(struct drm_file *file_priv, struct drm_device *dev,
 771                              uint32_t handle)
 772 {
 773         return drm_gem_handle_delete(file_priv, handle);
 774 }
 775
 776 int
 777 nouveau_display_dumb_map_offset(struct drm_file *file_priv,
 778                                 struct drm_device *dev,
 779                                 uint32_t handle, uint64_t *poffset)
 780 {
 781         struct drm_gem_object *gem;
 782
 783         gem = drm_gem_object_lookup(dev, file_priv, handle);
 784         if (gem) {
 785                 struct nouveau_bo *bo = gem->driver_private;
 786                 *poffset = bo->bo.addr_space_offset;
 787                 drm_gem_object_unreference_unlocked(gem);
 788                 return 0;
 789         }
 790
 791         return -ENOENT;
 792 }