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 "dispnv04/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 <engine/disp.h>
  41
  42 #include <core/class.h>
  43
  44 static int
  45 nouveau_display_vblank_handler(void *data, int head)
  46 {
  47         struct nouveau_drm *drm = data;
  48         drm_handle_vblank(drm->dev, head);
  49         return NVKM_EVENT_KEEP;
  50 }
  51
  52 int
  53 nouveau_display_vblank_enable(struct drm_device *dev, int head)
  54 {
  55         struct nouveau_display *disp = nouveau_display(dev);
  56         if (disp) {
  57                 nouveau_event_get(disp->vblank[head]);
  58                 return 0;
  59         }
  60         return -EIO;
  61 }
  62
  63 void
  64 nouveau_display_vblank_disable(struct drm_device *dev, int head)
  65 {
  66         struct nouveau_display *disp = nouveau_display(dev);
  67         if (disp)
  68                 nouveau_event_put(disp->vblank[head]);
  69 }
  70
  71 static void
  72 nouveau_display_vblank_fini(struct drm_device *dev)
  73 {
  74         struct nouveau_display *disp = nouveau_display(dev);
  75         int i;
  76
  77         drm_vblank_cleanup(dev);
  78
  79         if (disp->vblank) {
  80                 for (i = 0; i < dev->mode_config.num_crtc; i++)
  81                         nouveau_event_ref(NULL, &disp->vblank[i]);
  82                 kfree(disp->vblank);
  83                 disp->vblank = NULL;
  84         }
  85 }
  86
  87 static int
  88 nouveau_display_vblank_init(struct drm_device *dev)
  89 {
  90         struct nouveau_display *disp = nouveau_display(dev);
  91         struct nouveau_drm *drm = nouveau_drm(dev);
  92         struct nouveau_disp *pdisp = nouveau_disp(drm->device);
  93         int ret, i;
  94
  95         disp->vblank = kzalloc(dev->mode_config.num_crtc *
  96                                sizeof(*disp->vblank), GFP_KERNEL);
  97         if (!disp->vblank)
  98                 return -ENOMEM;
  99
 100         for (i = 0; i < dev->mode_config.num_crtc; i++) {
 101                 ret = nouveau_event_new(pdisp->vblank, i,
 102                                         nouveau_display_vblank_handler,
 103                                         drm, &disp->vblank[i]);
 104                 if (ret) {
 105                         nouveau_display_vblank_fini(dev);
 106                         return ret;
 107                 }
 108         }
 109
 110         ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
 111         if (ret) {
 112                 nouveau_display_vblank_fini(dev);
 113                 return ret;
 114         }
 115
 116         return 0;
 117 }
 118
 119 static void
 120 nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb)
 121 {
 122         struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
 123
 124         if (fb->nvbo)
 125                 drm_gem_object_unreference_unlocked(&fb->nvbo->gem);
 126
 127         drm_framebuffer_cleanup(drm_fb);
 128         kfree(fb);
 129 }
 130
 131 static int
 132 nouveau_user_framebuffer_create_handle(struct drm_framebuffer *drm_fb,
 133                                        struct drm_file *file_priv,
 134                                        unsigned int *handle)
 135 {
 136         struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
 137
 138         return drm_gem_handle_create(file_priv, &fb->nvbo->gem, handle);
 139 }
 140
 141 static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
 142         .destroy = nouveau_user_framebuffer_destroy,
 143         .create_handle = nouveau_user_framebuffer_create_handle,
 144 };
 145
 146 int
 147 nouveau_framebuffer_init(struct drm_device *dev,
 148                          struct nouveau_framebuffer *nv_fb,
 149                          struct drm_mode_fb_cmd2 *mode_cmd,
 150                          struct nouveau_bo *nvbo)
 151 {
 152         struct nouveau_drm *drm = nouveau_drm(dev);
 153         struct drm_framebuffer *fb = &nv_fb->base;
 154         int ret;
 155
 156         drm_helper_mode_fill_fb_struct(fb, mode_cmd);
 157         nv_fb->nvbo = nvbo;
 158
 159         if (nv_device(drm->device)->card_type >= NV_50) {
 160                 u32 tile_flags = nouveau_bo_tile_layout(nvbo);
 161                 if (tile_flags == 0x7a00 ||
 162                     tile_flags == 0xfe00)
 163                         nv_fb->r_dma = NvEvoFB32;
 164                 else
 165                 if (tile_flags == 0x7000)
 166                         nv_fb->r_dma = NvEvoFB16;
 167                 else
 168                         nv_fb->r_dma = NvEvoVRAM_LP;
 169
 170                 switch (fb->depth) {
 171                 case  8: nv_fb->r_format = 0x1e00; break;
 172                 case 15: nv_fb->r_format = 0xe900; break;
 173                 case 16: nv_fb->r_format = 0xe800; break;
 174                 case 24:
 175                 case 32: nv_fb->r_format = 0xcf00; break;
 176                 case 30: nv_fb->r_format = 0xd100; break;
 177                 default:
 178                          NV_ERROR(drm, "unknown depth %d\n", fb->depth);
 179                          return -EINVAL;
 180                 }
 181
 182                 if (nvbo->tile_flags & NOUVEAU_GEM_TILE_NONCONTIG) {
 183                         NV_ERROR(drm, "framebuffer requires contiguous bo\n");
 184                         return -EINVAL;
 185                 }
 186
 187                 if (nv_device(drm->device)->chipset == 0x50)
 188                         nv_fb->r_format |= (tile_flags << 8);
 189
 190                 if (!tile_flags) {
 191                         if (nv_device(drm->device)->card_type < NV_D0)
 192                                 nv_fb->r_pitch = 0x00100000 | fb->pitches[0];
 193                         else
 194                                 nv_fb->r_pitch = 0x01000000 | fb->pitches[0];
 195                 } else {
 196                         u32 mode = nvbo->tile_mode;
 197                         if (nv_device(drm->device)->card_type >= NV_C0)
 198                                 mode >>= 4;
 199                         nv_fb->r_pitch = ((fb->pitches[0] / 4) << 4) | mode;
 200                 }
 201         }
 202
 203         ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
 204         if (ret) {
 205                 return ret;
 206         }
 207
 208         return 0;
 209 }
 210
 211 static struct drm_framebuffer *
 212 nouveau_user_framebuffer_create(struct drm_device *dev,
 213                                 struct drm_file *file_priv,
 214                                 struct drm_mode_fb_cmd2 *mode_cmd)
 215 {
 216         struct nouveau_framebuffer *nouveau_fb;
 217         struct drm_gem_object *gem;
 218         int ret = -ENOMEM;
 219
 220         gem = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
 221         if (!gem)
 222                 return ERR_PTR(-ENOENT);
 223
 224         nouveau_fb = kzalloc(sizeof(struct nouveau_framebuffer), GFP_KERNEL);
 225         if (!nouveau_fb)
 226                 goto err_unref;
 227
 228         ret = nouveau_framebuffer_init(dev, nouveau_fb, mode_cmd, nouveau_gem_object(gem));
 229         if (ret)
 230                 goto err;
 231
 232         return &nouveau_fb->base;
 233
 234 err:
 235         kfree(nouveau_fb);
 236 err_unref:
 237         drm_gem_object_unreference(gem);
 238         return ERR_PTR(ret);
 239 }
 240
 241 static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
 242         .fb_create = nouveau_user_framebuffer_create,
 243         .output_poll_changed = nouveau_fbcon_output_poll_changed,
 244 };
 245
 246
 247 struct nouveau_drm_prop_enum_list {
 248         u8 gen_mask;
 249         int type;
 250         char *name;
 251 };
 252
 253 static struct nouveau_drm_prop_enum_list underscan[] = {
 254         { 6, UNDERSCAN_AUTO, "auto" },
 255         { 6, UNDERSCAN_OFF, "off" },
 256         { 6, UNDERSCAN_ON, "on" },
 257         {}
 258 };
 259
 260 static struct nouveau_drm_prop_enum_list dither_mode[] = {
 261         { 7, DITHERING_MODE_AUTO, "auto" },
 262         { 7, DITHERING_MODE_OFF, "off" },
 263         { 1, DITHERING_MODE_ON, "on" },
 264         { 6, DITHERING_MODE_STATIC2X2, "static 2x2" },
 265         { 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" },
 266         { 4, DITHERING_MODE_TEMPORAL, "temporal" },
 267         {}
 268 };
 269
 270 static struct nouveau_drm_prop_enum_list dither_depth[] = {
 271         { 6, DITHERING_DEPTH_AUTO, "auto" },
 272         { 6, DITHERING_DEPTH_6BPC, "6 bpc" },
 273         { 6, DITHERING_DEPTH_8BPC, "8 bpc" },
 274         {}
 275 };
 276
 277 #define PROP_ENUM(p,gen,n,list) do {                                           \
 278         struct nouveau_drm_prop_enum_list *l = (list);                         \
 279         int c = 0;                                                             \
 280         while (l->gen_mask) {                                                  \
 281                 if (l->gen_mask & (1 << (gen)))                                \
 282                         c++;                                                   \
 283                 l++;                                                           \
 284         }                                                                      \
 285         if (c) {                                                               \
 286                 p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c);        \
 287                 l = (list);                                                    \
 288                 c = 0;                                                         \
 289                 while (p && l->gen_mask) {                                     \
 290                         if (l->gen_mask & (1 << (gen))) {                      \
 291                                 drm_property_add_enum(p, c, l->type, l->name); \
 292                                 c++;                                           \
 293                         }                                                      \
 294                         l++;                                                   \
 295                 }                                                              \
 296         }                                                                      \
 297 } while(0)
 298
 299 int
 300 nouveau_display_init(struct drm_device *dev)
 301 {
 302         struct nouveau_display *disp = nouveau_display(dev);
 303         struct drm_connector *connector;
 304         int ret;
 305
 306         ret = disp->init(dev);
 307         if (ret)
 308                 return ret;
 309
 310         /* enable polling for external displays */
 311         drm_kms_helper_poll_enable(dev);
 312
 313         /* enable hotplug interrupts */
 314         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 315                 struct nouveau_connector *conn = nouveau_connector(connector);
 316                 if (conn->hpd_func) nouveau_event_get(conn->hpd_func);
 317         }
 318
 319         return ret;
 320 }
 321
 322 void
 323 nouveau_display_fini(struct drm_device *dev)
 324 {
 325         struct nouveau_display *disp = nouveau_display(dev);
 326         struct drm_connector *connector;
 327
 328         /* disable hotplug interrupts */
 329         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 330                 struct nouveau_connector *conn = nouveau_connector(connector);
 331                 if (conn->hpd_func) nouveau_event_put(conn->hpd_func);
 332         }
 333
 334         drm_kms_helper_poll_disable(dev);
 335         disp->fini(dev);
 336 }
 337
 338 int
 339 nouveau_display_create(struct drm_device *dev)
 340 {
 341         struct nouveau_drm *drm = nouveau_drm(dev);
 342         struct nouveau_display *disp;
 343         int ret, gen;
 344
 345         disp = drm->display = kzalloc(sizeof(*disp), GFP_KERNEL);
 346         if (!disp)
 347                 return -ENOMEM;
 348
 349         drm_mode_config_init(dev);
 350         drm_mode_create_scaling_mode_property(dev);
 351         drm_mode_create_dvi_i_properties(dev);
 352
 353         if (nv_device(drm->device)->card_type < NV_50)
 354                 gen = 0;
 355         else
 356         if (nv_device(drm->device)->card_type < NV_D0)
 357                 gen = 1;
 358         else
 359                 gen = 2;
 360
 361         PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
 362         PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
 363         PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);
 364
 365         disp->underscan_hborder_property =
 366                 drm_property_create_range(dev, 0, "underscan hborder", 0, 128);
 367
 368         disp->underscan_vborder_property =
 369                 drm_property_create_range(dev, 0, "underscan vborder", 0, 128);
 370
 371         if (gen >= 1) {
 372                 /* -90..+90 */
 373                 disp->vibrant_hue_property =
 374                         drm_property_create_range(dev, 0, "vibrant hue", 0, 180);
 375
 376                 /* -100..+100 */
 377                 disp->color_vibrance_property =
 378                         drm_property_create_range(dev, 0, "color vibrance", 0, 200);
 379         }
 380
 381         dev->mode_config.funcs = &nouveau_mode_config_funcs;
 382         dev->mode_config.fb_base = pci_resource_start(dev->pdev, 1);
 383
 384         dev->mode_config.min_width = 0;
 385         dev->mode_config.min_height = 0;
 386         if (nv_device(drm->device)->card_type < NV_10) {
 387                 dev->mode_config.max_width = 2048;
 388                 dev->mode_config.max_height = 2048;
 389         } else
 390         if (nv_device(drm->device)->card_type < NV_50) {
 391                 dev->mode_config.max_width = 4096;
 392                 dev->mode_config.max_height = 4096;
 393         } else {
 394                 dev->mode_config.max_width = 8192;
 395                 dev->mode_config.max_height = 8192;
 396         }
 397
 398         dev->mode_config.preferred_depth = 24;
 399         dev->mode_config.prefer_shadow = 1;
 400
 401         if (nv_device(drm->device)->chipset < 0x11)
 402                 dev->mode_config.async_page_flip = false;
 403         else
 404                 dev->mode_config.async_page_flip = true;
 405
 406         drm_kms_helper_poll_init(dev);
 407         drm_kms_helper_poll_disable(dev);
 408
 409         if (drm->vbios.dcb.entries) {
 410                 static const u16 oclass[] = {
 411                         NVF0_DISP_CLASS,
 412                         NVE0_DISP_CLASS,
 413                         NVD0_DISP_CLASS,
 414                         NVA3_DISP_CLASS,
 415                         NV94_DISP_CLASS,
 416                         NVA0_DISP_CLASS,
 417                         NV84_DISP_CLASS,
 418                         NV50_DISP_CLASS,
 419                         NV04_DISP_CLASS,
 420                 };
 421                 int i;
 422
 423                 for (i = 0, ret = -ENODEV; ret && i < ARRAY_SIZE(oclass); i++) {
 424                         ret = nouveau_object_new(nv_object(drm), NVDRM_DEVICE,
 425                                                  NVDRM_DISPLAY, oclass[i],
 426                                                  NULL, 0, &disp->core);
 427                 }
 428
 429                 if (ret == 0) {
 430                         if (nv_mclass(disp->core) < NV50_DISP_CLASS)
 431                                 ret = nv04_display_create(dev);
 432                         else
 433                                 ret = nv50_display_create(dev);
 434                 }
 435         } else {
 436                 ret = 0;
 437         }
 438
 439         if (ret)
 440                 goto disp_create_err;
 441
 442         if (dev->mode_config.num_crtc) {
 443                 ret = nouveau_display_vblank_init(dev);
 444                 if (ret)
 445                         goto vblank_err;
 446         }
 447
 448         nouveau_backlight_init(dev);
 449         return 0;
 450
 451 vblank_err:
 452         disp->dtor(dev);
 453 disp_create_err:
 454         drm_kms_helper_poll_fini(dev);
 455         drm_mode_config_cleanup(dev);
 456         return ret;
 457 }
 458
 459 void
 460 nouveau_display_destroy(struct drm_device *dev)
 461 {
 462         struct nouveau_display *disp = nouveau_display(dev);
 463         struct nouveau_drm *drm = nouveau_drm(dev);
 464
 465         nouveau_backlight_exit(dev);
 466         nouveau_display_vblank_fini(dev);
 467
 468         drm_kms_helper_poll_fini(dev);
 469         drm_mode_config_cleanup(dev);
 470
 471         if (disp->dtor)
 472                 disp->dtor(dev);
 473
 474         nouveau_object_del(nv_object(drm), NVDRM_DEVICE, NVDRM_DISPLAY);
 475
 476         nouveau_drm(dev)->display = NULL;
 477         kfree(disp);
 478 }
 479
 480 int
 481 nouveau_display_suspend(struct drm_device *dev)
 482 {
 483         struct nouveau_drm *drm = nouveau_drm(dev);
 484         struct drm_crtc *crtc;
 485
 486         nouveau_display_fini(dev);
 487
 488         NV_INFO(drm, "unpinning framebuffer(s)...\n");
 489         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 490                 struct nouveau_framebuffer *nouveau_fb;
 491
 492                 nouveau_fb = nouveau_framebuffer(crtc->fb);
 493                 if (!nouveau_fb || !nouveau_fb->nvbo)
 494                         continue;
 495
 496                 nouveau_bo_unpin(nouveau_fb->nvbo);
 497         }
 498
 499         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 500                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 501
 502                 nouveau_bo_unmap(nv_crtc->cursor.nvbo);
 503                 nouveau_bo_unpin(nv_crtc->cursor.nvbo);
 504         }
 505
 506         return 0;
 507 }
 508
 509 void
 510 nouveau_display_repin(struct drm_device *dev)
 511 {
 512         struct nouveau_drm *drm = nouveau_drm(dev);
 513         struct drm_crtc *crtc;
 514         int ret;
 515
 516         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 517                 struct nouveau_framebuffer *nouveau_fb;
 518
 519                 nouveau_fb = nouveau_framebuffer(crtc->fb);
 520                 if (!nouveau_fb || !nouveau_fb->nvbo)
 521                         continue;
 522
 523                 nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM);
 524         }
 525
 526         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 527                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 528
 529                 ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM);
 530                 if (!ret)
 531                         ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
 532                 if (ret)
 533                         NV_ERROR(drm, "Could not pin/map cursor.\n");
 534         }
 535 }
 536
 537 void
 538 nouveau_display_resume(struct drm_device *dev)
 539 {
 540         struct drm_crtc *crtc;
 541         nouveau_display_init(dev);
 542
 543         /* Force CLUT to get re-loaded during modeset */
 544         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 545                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 546
 547                 nv_crtc->lut.depth = 0;
 548         }
 549
 550         drm_helper_resume_force_mode(dev);
 551
 552         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 553                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 554                 u32 offset = nv_crtc->cursor.nvbo->bo.offset;
 555
 556                 nv_crtc->cursor.set_offset(nv_crtc, offset);
 557                 nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
 558                                                  nv_crtc->cursor_saved_y);
 559         }
 560 }
 561
 562 static int
 563 nouveau_page_flip_emit(struct nouveau_channel *chan,
 564                        struct nouveau_bo *old_bo,
 565                        struct nouveau_bo *new_bo,
 566                        struct nouveau_page_flip_state *s,
 567                        struct nouveau_fence **pfence)
 568 {
 569         struct nouveau_fence_chan *fctx = chan->fence;
 570         struct nouveau_drm *drm = chan->drm;
 571         struct drm_device *dev = drm->dev;
 572         unsigned long flags;
 573         int ret;
 574
 575         /* Queue it to the pending list */
 576         spin_lock_irqsave(&dev->event_lock, flags);
 577         list_add_tail(&s->head, &fctx->flip);
 578         spin_unlock_irqrestore(&dev->event_lock, flags);
 579
 580         /* Synchronize with the old framebuffer */
 581         ret = nouveau_fence_sync(old_bo->bo.sync_obj, chan);
 582         if (ret)
 583                 goto fail;
 584
 585         /* Emit the pageflip */
 586         ret = RING_SPACE(chan, 2);
 587         if (ret)
 588                 goto fail;
 589
 590         if (nv_device(drm->device)->card_type < NV_C0)
 591                 BEGIN_NV04(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
 592         else
 593                 BEGIN_NVC0(chan, FermiSw, NV_SW_PAGE_FLIP, 1);
 594         OUT_RING  (chan, 0x00000000);
 595         FIRE_RING (chan);
 596
 597         ret = nouveau_fence_new(chan, false, pfence);
 598         if (ret)
 599                 goto fail;
 600
 601         return 0;
 602 fail:
 603         spin_lock_irqsave(&dev->event_lock, flags);
 604         list_del(&s->head);
 605         spin_unlock_irqrestore(&dev->event_lock, flags);
 606         return ret;
 607 }
 608
 609 int
 610 nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 611                        struct drm_pending_vblank_event *event, u32 flags)
 612 {
 613         const int swap_interval = (flags & DRM_MODE_PAGE_FLIP_ASYNC) ? 0 : 1;
 614         struct drm_device *dev = crtc->dev;
 615         struct nouveau_drm *drm = nouveau_drm(dev);
 616         struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->fb)->nvbo;
 617         struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
 618         struct nouveau_page_flip_state *s;
 619         struct nouveau_channel *chan = drm->channel;
 620         struct nouveau_fence *fence;
 621         int ret;
 622
 623         if (!drm->channel)
 624                 return -ENODEV;
 625
 626         s = kzalloc(sizeof(*s), GFP_KERNEL);
 627         if (!s)
 628                 return -ENOMEM;
 629
 630         if (new_bo != old_bo) {
 631                 ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM);
 632                 if (ret)
 633                         goto fail_free;
 634         }
 635
 636         mutex_lock(&chan->cli->mutex);
 637
 638         /* synchronise rendering channel with the kernel's channel */
 639         spin_lock(&new_bo->bo.bdev->fence_lock);
 640         fence = nouveau_fence_ref(new_bo->bo.sync_obj);
 641         spin_unlock(&new_bo->bo.bdev->fence_lock);
 642         ret = nouveau_fence_sync(fence, chan);
 643         nouveau_fence_unref(&fence);
 644         if (ret)
 645                 goto fail_free;
 646
 647         ret = ttm_bo_reserve(&old_bo->bo, true, false, false, NULL);
 648         if (ret)
 649                 goto fail_unpin;
 650
 651         /* Initialize a page flip struct */
 652         *s = (struct nouveau_page_flip_state)
 653                 { { }, event, nouveau_crtc(crtc)->index,
 654                   fb->bits_per_pixel, fb->pitches[0], crtc->x, crtc->y,
 655                   new_bo->bo.offset };
 656
 657         /* Emit a page flip */
 658         if (nv_device(drm->device)->card_type >= NV_50) {
 659                 ret = nv50_display_flip_next(crtc, fb, chan, swap_interval);
 660                 if (ret)
 661                         goto fail_unreserve;
 662         } else {
 663                 struct nv04_display *dispnv04 = nv04_display(dev);
 664                 int head = nouveau_crtc(crtc)->index;
 665
 666                 if (swap_interval) {
 667                         ret = RING_SPACE(chan, 8);
 668                         if (ret)
 669                                 goto fail_unreserve;
 670
 671                         BEGIN_NV04(chan, NvSubImageBlit, 0x012c, 1);
 672                         OUT_RING  (chan, 0);
 673                         BEGIN_NV04(chan, NvSubImageBlit, 0x0134, 1);
 674                         OUT_RING  (chan, head);
 675                         BEGIN_NV04(chan, NvSubImageBlit, 0x0100, 1);
 676                         OUT_RING  (chan, 0);
 677                         BEGIN_NV04(chan, NvSubImageBlit, 0x0130, 1);
 678                         OUT_RING  (chan, 0);
 679                 }
 680
 681                 nouveau_bo_ref(new_bo, &dispnv04->image[head]);
 682         }
 683
 684         ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
 685         mutex_unlock(&chan->cli->mutex);
 686         if (ret)
 687                 goto fail_unreserve;
 688
 689         /* Update the crtc struct and cleanup */
 690         crtc->fb = fb;
 691
 692         nouveau_bo_fence(old_bo, fence);
 693         ttm_bo_unreserve(&old_bo->bo);
 694         if (old_bo != new_bo)
 695                 nouveau_bo_unpin(old_bo);
 696         nouveau_fence_unref(&fence);
 697         return 0;
 698
 699 fail_unreserve:
 700         ttm_bo_unreserve(&old_bo->bo);
 701 fail_unpin:
 702         mutex_unlock(&chan->cli->mutex);
 703         if (old_bo != new_bo)
 704                 nouveau_bo_unpin(new_bo);
 705 fail_free:
 706         kfree(s);
 707         return ret;
 708 }
 709
 710 int
 711 nouveau_finish_page_flip(struct nouveau_channel *chan,
 712                          struct nouveau_page_flip_state *ps)
 713 {
 714         struct nouveau_fence_chan *fctx = chan->fence;
 715         struct nouveau_drm *drm = chan->drm;
 716         struct drm_device *dev = drm->dev;
 717         struct nouveau_page_flip_state *s;
 718         unsigned long flags;
 719
 720         spin_lock_irqsave(&dev->event_lock, flags);
 721
 722         if (list_empty(&fctx->flip)) {
 723                 NV_ERROR(drm, "unexpected pageflip\n");
 724                 spin_unlock_irqrestore(&dev->event_lock, flags);
 725                 return -EINVAL;
 726         }
 727
 728         s = list_first_entry(&fctx->flip, struct nouveau_page_flip_state, head);
 729         if (s->event)
 730                 drm_send_vblank_event(dev, s->crtc, s->event);
 731
 732         list_del(&s->head);
 733         if (ps)
 734                 *ps = *s;
 735         kfree(s);
 736
 737         spin_unlock_irqrestore(&dev->event_lock, flags);
 738         return 0;
 739 }
 740
 741 int
 742 nouveau_flip_complete(void *data)
 743 {
 744         struct nouveau_channel *chan = data;
 745         struct nouveau_drm *drm = chan->drm;
 746         struct nouveau_page_flip_state state;
 747
 748         if (!nouveau_finish_page_flip(chan, &state)) {
 749                 if (nv_device(drm->device)->card_type < NV_50) {
 750                         nv_set_crtc_base(drm->dev, state.crtc, state.offset +
 751                                          state.y * state.pitch +
 752                                          state.x * state.bpp / 8);
 753                 }
 754         }
 755
 756         return 0;
 757 }
 758
 759 int
 760 nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
 761                             struct drm_mode_create_dumb *args)
 762 {
 763         struct nouveau_bo *bo;
 764         int ret;
 765
 766         args->pitch = roundup(args->width * (args->bpp / 8), 256);
 767         args->size = args->pitch * args->height;
 768         args->size = roundup(args->size, PAGE_SIZE);
 769
 770         ret = nouveau_gem_new(dev, args->size, 0, NOUVEAU_GEM_DOMAIN_VRAM, 0, 0, &bo);
 771         if (ret)
 772                 return ret;
 773
 774         ret = drm_gem_handle_create(file_priv, &bo->gem, &args->handle);
 775         drm_gem_object_unreference_unlocked(&bo->gem);
 776         return ret;
 777 }
 778
 779 int
 780 nouveau_display_dumb_map_offset(struct drm_file *file_priv,
 781                                 struct drm_device *dev,
 782                                 uint32_t handle, uint64_t *poffset)
 783 {
 784         struct drm_gem_object *gem;
 785
 786         gem = drm_gem_object_lookup(dev, file_priv, handle);
 787         if (gem) {
 788                 struct nouveau_bo *bo = nouveau_gem_object(gem);
 789                 *poffset = drm_vma_node_offset_addr(&bo->bo.vma_node);
 790                 drm_gem_object_unreference_unlocked(gem);
 791                 return 0;
 792         }
 793
 794         return -ENOENT;
 795 }