drivers/gpu/drm/nouveau/nouveau_display.c

   1 /*
   2  * Copyright (C) 2008 Maarten Maathuis.
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining
   6  * a copy of this software and associated documentation files (the
   7  * "Software"), to deal in the Software without restriction, including
   8  * without limitation the rights to use, copy, modify, merge, publish,
   9  * distribute, sublicense, and/or sell copies of the Software, and to
  10  * permit persons to whom the Software is furnished to do so, subject to
  11  * the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the
  14  * next paragraph) shall be included in all copies or substantial
  15  * portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  *
  25  */
  26
  27 #include <drm/drmP.h>
  28 #include <drm/drm_crtc_helper.h>
  29
  30 #include <nvif/class.h>
  31
  32 #include "nouveau_fbcon.h"
  33 #include "dispnv04/hw.h"
  34 #include "nouveau_crtc.h"
  35 #include "nouveau_dma.h"
  36 #include "nouveau_gem.h"
  37 #include "nouveau_connector.h"
  38 #include "nv50_display.h"
  39
  40 #include "nouveau_fence.h"
  41
  42 #include <nvif/event.h>
  43
  44 static int
  45 nouveau_display_vblank_handler(struct nvif_notify *notify)
  46 {
  47         struct nouveau_crtc *nv_crtc =
  48                 container_of(notify, typeof(*nv_crtc), vblank);
  49         drm_handle_vblank(nv_crtc->base.dev, nv_crtc->index);
  50         return NVIF_NOTIFY_KEEP;
  51 }
  52
  53 int
  54 nouveau_display_vblank_enable(struct drm_device *dev, int head)
  55 {
  56         struct drm_crtc *crtc;
  57         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
  58                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
  59                 if (nv_crtc->index == head) {
  60                         nvif_notify_get(&nv_crtc->vblank);
  61                         return 0;
  62                 }
  63         }
  64         return -EINVAL;
  65 }
  66
  67 void
  68 nouveau_display_vblank_disable(struct drm_device *dev, int head)
  69 {
  70         struct drm_crtc *crtc;
  71         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
  72                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
  73                 if (nv_crtc->index == head) {
  74                         nvif_notify_put(&nv_crtc->vblank);
  75                         return;
  76                 }
  77         }
  78 }
  79
  80 static inline int
  81 calc(int blanks, int blanke, int total, int line)
  82 {
  83         if (blanke >= blanks) {
  84                 if (line >= blanks)
  85                         line -= total;
  86         } else {
  87                 if (line >= blanks)
  88                         line -= total;
  89                 line -= blanke + 1;
  90         }
  91         return line;
  92 }
  93
  94 int
  95 nouveau_display_scanoutpos_head(struct drm_crtc *crtc, int *vpos, int *hpos,
  96                                 ktime_t *stime, ktime_t *etime)
  97 {
  98         struct {
  99                 struct nv04_disp_mthd_v0 base;
 100                 struct nv04_disp_scanoutpos_v0 scan;
 101         } args = {
 102                 .base.method = NV04_DISP_SCANOUTPOS,
 103                 .base.head = nouveau_crtc(crtc)->index,
 104         };
 105         struct nouveau_display *disp = nouveau_display(crtc->dev);
 106         int ret, retry = 1;
 107
 108         do {
 109                 ret = nvif_mthd(&disp->disp, 0, &args, sizeof(args));
 110                 if (ret != 0)
 111                         return 0;
 112
 113                 if (args.scan.vline) {
 114                         ret |= DRM_SCANOUTPOS_ACCURATE;
 115                         ret |= DRM_SCANOUTPOS_VALID;
 116                         break;
 117                 }
 118
 119                 if (retry) ndelay(crtc->linedur_ns);
 120         } while (retry--);
 121
 122         *hpos = args.scan.hline;
 123         *vpos = calc(args.scan.vblanks, args.scan.vblanke,
 124                      args.scan.vtotal, args.scan.vline);
 125         if (stime) *stime = ns_to_ktime(args.scan.time[0]);
 126         if (etime) *etime = ns_to_ktime(args.scan.time[1]);
 127
 128         if (*vpos < 0)
 129                 ret |= DRM_SCANOUTPOS_IN_VBLANK;
 130         return ret;
 131 }
 132
 133 int
 134 nouveau_display_scanoutpos(struct drm_device *dev, int head, unsigned int flags,
 135                            int *vpos, int *hpos, ktime_t *stime, ktime_t *etime)
 136 {
 137         struct drm_crtc *crtc;
 138
 139         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 140                 if (nouveau_crtc(crtc)->index == head) {
 141                         return nouveau_display_scanoutpos_head(crtc, vpos, hpos,
 142                                                                stime, etime);
 143                 }
 144         }
 145
 146         return 0;
 147 }
 148
 149 int
 150 nouveau_display_vblstamp(struct drm_device *dev, int head, int *max_error,
 151                          struct timeval *time, unsigned flags)
 152 {
 153         struct drm_crtc *crtc;
 154
 155         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 156                 if (nouveau_crtc(crtc)->index == head) {
 157                         return drm_calc_vbltimestamp_from_scanoutpos(dev,
 158                                         head, max_error, time, flags, crtc,
 159                                         &crtc->hwmode);
 160                 }
 161         }
 162
 163         return -EINVAL;
 164 }
 165
 166 static void
 167 nouveau_display_vblank_fini(struct drm_device *dev)
 168 {
 169         struct drm_crtc *crtc;
 170
 171         drm_vblank_cleanup(dev);
 172
 173         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 174                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 175                 nvif_notify_fini(&nv_crtc->vblank);
 176         }
 177 }
 178
 179 static int
 180 nouveau_display_vblank_init(struct drm_device *dev)
 181 {
 182         struct nouveau_display *disp = nouveau_display(dev);
 183         struct drm_crtc *crtc;
 184         int ret;
 185
 186         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 187                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 188                 ret = nvif_notify_init(&disp->disp, NULL,
 189                                        nouveau_display_vblank_handler, false,
 190                                        NV04_DISP_NTFY_VBLANK,
 191                                        &(struct nvif_notify_head_req_v0) {
 192                                         .head = nv_crtc->index,
 193                                        },
 194                                        sizeof(struct nvif_notify_head_req_v0),
 195                                        sizeof(struct nvif_notify_head_rep_v0),
 196                                        &nv_crtc->vblank);
 197                 if (ret) {
 198                         nouveau_display_vblank_fini(dev);
 199                         return ret;
 200                 }
 201         }
 202
 203         ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
 204         if (ret) {
 205                 nouveau_display_vblank_fini(dev);
 206                 return ret;
 207         }
 208
 209         return 0;
 210 }
 211
 212 static void
 213 nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb)
 214 {
 215         struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
 216         struct nouveau_display *disp = nouveau_display(drm_fb->dev);
 217
 218         if (disp->fb_dtor)
 219                 disp->fb_dtor(drm_fb);
 220
 221         if (fb->nvbo)
 222                 drm_gem_object_unreference_unlocked(&fb->nvbo->gem);
 223
 224         drm_framebuffer_cleanup(drm_fb);
 225         kfree(fb);
 226 }
 227
 228 static int
 229 nouveau_user_framebuffer_create_handle(struct drm_framebuffer *drm_fb,
 230                                        struct drm_file *file_priv,
 231                                        unsigned int *handle)
 232 {
 233         struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
 234
 235         return drm_gem_handle_create(file_priv, &fb->nvbo->gem, handle);
 236 }
 237
 238 static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
 239         .destroy = nouveau_user_framebuffer_destroy,
 240         .create_handle = nouveau_user_framebuffer_create_handle,
 241 };
 242
 243 int
 244 nouveau_framebuffer_init(struct drm_device *dev,
 245                          struct nouveau_framebuffer *nv_fb,
 246                          struct drm_mode_fb_cmd2 *mode_cmd,
 247                          struct nouveau_bo *nvbo)
 248 {
 249         struct nouveau_display *disp = nouveau_display(dev);
 250         struct drm_framebuffer *fb = &nv_fb->base;
 251         int ret;
 252
 253         drm_helper_mode_fill_fb_struct(fb, mode_cmd);
 254         nv_fb->nvbo = nvbo;
 255
 256         ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
 257         if (ret)
 258                 return ret;
 259
 260         if (disp->fb_ctor) {
 261                 ret = disp->fb_ctor(fb);
 262                 if (ret)
 263                         disp->fb_dtor(fb);
 264         }
 265
 266         return ret;
 267 }
 268
 269 static struct drm_framebuffer *
 270 nouveau_user_framebuffer_create(struct drm_device *dev,
 271                                 struct drm_file *file_priv,
 272                                 struct drm_mode_fb_cmd2 *mode_cmd)
 273 {
 274         struct nouveau_framebuffer *nouveau_fb;
 275         struct drm_gem_object *gem;
 276         int ret = -ENOMEM;
 277
 278         gem = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
 279         if (!gem)
 280                 return ERR_PTR(-ENOENT);
 281
 282         nouveau_fb = kzalloc(sizeof(struct nouveau_framebuffer), GFP_KERNEL);
 283         if (!nouveau_fb)
 284                 goto err_unref;
 285
 286         ret = nouveau_framebuffer_init(dev, nouveau_fb, mode_cmd, nouveau_gem_object(gem));
 287         if (ret)
 288                 goto err;
 289
 290         return &nouveau_fb->base;
 291
 292 err:
 293         kfree(nouveau_fb);
 294 err_unref:
 295         drm_gem_object_unreference(gem);
 296         return ERR_PTR(ret);
 297 }
 298
 299 static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
 300         .fb_create = nouveau_user_framebuffer_create,
 301         .output_poll_changed = nouveau_fbcon_output_poll_changed,
 302 };
 303
 304
 305 struct nouveau_drm_prop_enum_list {
 306         u8 gen_mask;
 307         int type;
 308         char *name;
 309 };
 310
 311 static struct nouveau_drm_prop_enum_list underscan[] = {
 312         { 6, UNDERSCAN_AUTO, "auto" },
 313         { 6, UNDERSCAN_OFF, "off" },
 314         { 6, UNDERSCAN_ON, "on" },
 315         {}
 316 };
 317
 318 static struct nouveau_drm_prop_enum_list dither_mode[] = {
 319         { 7, DITHERING_MODE_AUTO, "auto" },
 320         { 7, DITHERING_MODE_OFF, "off" },
 321         { 1, DITHERING_MODE_ON, "on" },
 322         { 6, DITHERING_MODE_STATIC2X2, "static 2x2" },
 323         { 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" },
 324         { 4, DITHERING_MODE_TEMPORAL, "temporal" },
 325         {}
 326 };
 327
 328 static struct nouveau_drm_prop_enum_list dither_depth[] = {
 329         { 6, DITHERING_DEPTH_AUTO, "auto" },
 330         { 6, DITHERING_DEPTH_6BPC, "6 bpc" },
 331         { 6, DITHERING_DEPTH_8BPC, "8 bpc" },
 332         {}
 333 };
 334
 335 #define PROP_ENUM(p,gen,n,list) do {                                           \
 336         struct nouveau_drm_prop_enum_list *l = (list);                         \
 337         int c = 0;                                                             \
 338         while (l->gen_mask) {                                                  \
 339                 if (l->gen_mask & (1 << (gen)))                                \
 340                         c++;                                                   \
 341                 l++;                                                           \
 342         }                                                                      \
 343         if (c) {                                                               \
 344                 p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c);        \
 345                 l = (list);                                                    \
 346                 c = 0;                                                         \
 347                 while (p && l->gen_mask) {                                     \
 348                         if (l->gen_mask & (1 << (gen))) {                      \
 349                                 drm_property_add_enum(p, c, l->type, l->name); \
 350                                 c++;                                           \
 351                         }                                                      \
 352                         l++;                                                   \
 353                 }                                                              \
 354         }                                                                      \
 355 } while(0)
 356
 357 int
 358 nouveau_display_init(struct drm_device *dev)
 359 {
 360         struct nouveau_display *disp = nouveau_display(dev);
 361         struct drm_connector *connector;
 362         int ret;
 363
 364         ret = disp->init(dev);
 365         if (ret)
 366                 return ret;
 367
 368         /* enable polling for external displays */
 369         drm_kms_helper_poll_enable(dev);
 370
 371         /* enable hotplug interrupts */
 372         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 373                 struct nouveau_connector *conn = nouveau_connector(connector);
 374                 nvif_notify_get(&conn->hpd);
 375         }
 376
 377         return ret;
 378 }
 379
 380 void
 381 nouveau_display_fini(struct drm_device *dev)
 382 {
 383         struct nouveau_display *disp = nouveau_display(dev);
 384         struct drm_connector *connector;
 385         int head;
 386
 387         /* Make sure that drm and hw vblank irqs get properly disabled. */
 388         for (head = 0; head < dev->mode_config.num_crtc; head++)
 389                 drm_vblank_off(dev, head);
 390
 391         /* disable hotplug interrupts */
 392         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 393                 struct nouveau_connector *conn = nouveau_connector(connector);
 394                 nvif_notify_put(&conn->hpd);
 395         }
 396
 397         drm_kms_helper_poll_disable(dev);
 398         disp->fini(dev);
 399 }
 400
 401 static void
 402 nouveau_display_create_properties(struct drm_device *dev)
 403 {
 404         struct nouveau_display *disp = nouveau_display(dev);
 405         int gen;
 406
 407         if (disp->disp.oclass < NV50_DISP)
 408                 gen = 0;
 409         else
 410         if (disp->disp.oclass < GF110_DISP)
 411                 gen = 1;
 412         else
 413                 gen = 2;
 414
 415         PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
 416         PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
 417         PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);
 418
 419         disp->underscan_hborder_property =
 420                 drm_property_create_range(dev, 0, "underscan hborder", 0, 128);
 421
 422         disp->underscan_vborder_property =
 423                 drm_property_create_range(dev, 0, "underscan vborder", 0, 128);
 424
 425         if (gen < 1)
 426                 return;
 427
 428         /* -90..+90 */
 429         disp->vibrant_hue_property =
 430                 drm_property_create_range(dev, 0, "vibrant hue", 0, 180);
 431
 432         /* -100..+100 */
 433         disp->color_vibrance_property =
 434                 drm_property_create_range(dev, 0, "color vibrance", 0, 200);
 435 }
 436
 437 int
 438 nouveau_display_create(struct drm_device *dev)
 439 {
 440         struct nouveau_drm *drm = nouveau_drm(dev);
 441         struct nouveau_display *disp;
 442         int ret;
 443
 444         disp = drm->display = kzalloc(sizeof(*disp), GFP_KERNEL);
 445         if (!disp)
 446                 return -ENOMEM;
 447
 448         drm_mode_config_init(dev);
 449         drm_mode_create_scaling_mode_property(dev);
 450         drm_mode_create_dvi_i_properties(dev);
 451
 452         dev->mode_config.funcs = &nouveau_mode_config_funcs;
 453         dev->mode_config.fb_base = nv_device_resource_start(nvkm_device(&drm->device), 1);
 454
 455         dev->mode_config.min_width = 0;
 456         dev->mode_config.min_height = 0;
 457         if (drm->device.info.family < NV_DEVICE_INFO_V0_CELSIUS) {
 458                 dev->mode_config.max_width = 2048;
 459                 dev->mode_config.max_height = 2048;
 460         } else
 461         if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 462                 dev->mode_config.max_width = 4096;
 463                 dev->mode_config.max_height = 4096;
 464         } else {
 465                 dev->mode_config.max_width = 8192;
 466                 dev->mode_config.max_height = 8192;
 467         }
 468
 469         dev->mode_config.preferred_depth = 24;
 470         dev->mode_config.prefer_shadow = 1;
 471
 472         if (drm->device.info.chipset < 0x11)
 473                 dev->mode_config.async_page_flip = false;
 474         else
 475                 dev->mode_config.async_page_flip = true;
 476
 477         drm_kms_helper_poll_init(dev);
 478         drm_kms_helper_poll_disable(dev);
 479
 480         if (nouveau_modeset != 2 && drm->vbios.dcb.entries) {
 481                 static const u16 oclass[] = {
 482                         GM204_DISP,
 483                         GM107_DISP,
 484                         GK110_DISP,
 485                         GK104_DISP,
 486                         GF110_DISP,
 487                         GT214_DISP,
 488                         GT206_DISP,
 489                         GT200_DISP,
 490                         G82_DISP,
 491                         NV50_DISP,
 492                         NV04_DISP,
 493                 };
 494                 int i;
 495
 496                 for (i = 0, ret = -ENODEV; ret && i < ARRAY_SIZE(oclass); i++) {
 497                         ret = nvif_object_init(nvif_object(&drm->device), NULL,
 498                                                NVDRM_DISPLAY, oclass[i],
 499                                                NULL, 0, &disp->disp);
 500                 }
 501
 502                 if (ret == 0) {
 503                         nouveau_display_create_properties(dev);
 504                         if (disp->disp.oclass < NV50_DISP)
 505                                 ret = nv04_display_create(dev);
 506                         else
 507                                 ret = nv50_display_create(dev);
 508                 }
 509         } else {
 510                 ret = 0;
 511         }
 512
 513         if (ret)
 514                 goto disp_create_err;
 515
 516         if (dev->mode_config.num_crtc) {
 517                 ret = nouveau_display_vblank_init(dev);
 518                 if (ret)
 519                         goto vblank_err;
 520         }
 521
 522         nouveau_backlight_init(dev);
 523         return 0;
 524
 525 vblank_err:
 526         disp->dtor(dev);
 527 disp_create_err:
 528         drm_kms_helper_poll_fini(dev);
 529         drm_mode_config_cleanup(dev);
 530         return ret;
 531 }
 532
 533 void
 534 nouveau_display_destroy(struct drm_device *dev)
 535 {
 536         struct nouveau_display *disp = nouveau_display(dev);
 537
 538         nouveau_backlight_exit(dev);
 539         nouveau_display_vblank_fini(dev);
 540
 541         drm_kms_helper_poll_fini(dev);
 542         drm_mode_config_cleanup(dev);
 543
 544         if (disp->dtor)
 545                 disp->dtor(dev);
 546
 547         nvif_object_fini(&disp->disp);
 548
 549         nouveau_drm(dev)->display = NULL;
 550         kfree(disp);
 551 }
 552
 553 int
 554 nouveau_display_suspend(struct drm_device *dev, bool runtime)
 555 {
 556         struct drm_crtc *crtc;
 557
 558         nouveau_display_fini(dev);
 559
 560         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 561                 struct nouveau_framebuffer *nouveau_fb;
 562
 563                 nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
 564                 if (!nouveau_fb || !nouveau_fb->nvbo)
 565                         continue;
 566
 567                 nouveau_bo_unpin(nouveau_fb->nvbo);
 568         }
 569
 570         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 571                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 572                 if (nv_crtc->cursor.nvbo) {
 573                         nouveau_bo_unmap(nv_crtc->cursor.nvbo);
 574                         nouveau_bo_unpin(nv_crtc->cursor.nvbo);
 575                 }
 576         }
 577
 578         return 0;
 579 }
 580
 581 void
 582 nouveau_display_resume(struct drm_device *dev, bool runtime)
 583 {
 584         struct nouveau_drm *drm = nouveau_drm(dev);
 585         struct drm_crtc *crtc;
 586         int ret, head;
 587
 588         /* re-pin fb/cursors */
 589         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 590                 struct nouveau_framebuffer *nouveau_fb;
 591
 592                 nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
 593                 if (!nouveau_fb || !nouveau_fb->nvbo)
 594                         continue;
 595
 596                 ret = nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM, true);
 597                 if (ret)
 598                         NV_ERROR(drm, "Could not pin framebuffer\n");
 599         }
 600
 601         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 602                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 603                 if (!nv_crtc->cursor.nvbo)
 604                         continue;
 605
 606                 ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM, true);
 607                 if (!ret)
 608                         ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
 609                 if (ret)
 610                         NV_ERROR(drm, "Could not pin/map cursor.\n");
 611         }
 612
 613         nouveau_display_init(dev);
 614
 615         /* Force CLUT to get re-loaded during modeset */
 616         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 617                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 618
 619                 nv_crtc->lut.depth = 0;
 620         }
 621
 622         /* Make sure that drm and hw vblank irqs get resumed if needed. */
 623         for (head = 0; head < dev->mode_config.num_crtc; head++)
 624                 drm_vblank_on(dev, head);
 625
 626         /* This should ensure we don't hit a locking problem when someone
 627          * wakes us up via a connector.  We should never go into suspend
 628          * while the display is on anyways.
 629          */
 630         if (runtime)
 631                 return;
 632
 633         drm_helper_resume_force_mode(dev);
 634
 635         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 636                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 637
 638                 if (!nv_crtc->cursor.nvbo)
 639                         continue;
 640                 nv_crtc->cursor.set_offset(nv_crtc, nv_crtc->cursor.nvbo->bo.offset);
 641                 nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
 642                                                  nv_crtc->cursor_saved_y);
 643         }
 644 }
 645
 646 static int
 647 nouveau_page_flip_emit(struct nouveau_channel *chan,
 648                        struct nouveau_bo *old_bo,
 649                        struct nouveau_bo *new_bo,
 650                        struct nouveau_page_flip_state *s,
 651                        struct nouveau_fence **pfence)
 652 {
 653         struct nouveau_fence_chan *fctx = chan->fence;
 654         struct nouveau_drm *drm = chan->drm;
 655         struct drm_device *dev = drm->dev;
 656         unsigned long flags;
 657         int ret;
 658
 659         /* Queue it to the pending list */
 660         spin_lock_irqsave(&dev->event_lock, flags);
 661         list_add_tail(&s->head, &fctx->flip);
 662         spin_unlock_irqrestore(&dev->event_lock, flags);
 663
 664         /* Synchronize with the old framebuffer */
 665         ret = nouveau_fence_sync(old_bo, chan, false, false);
 666         if (ret)
 667                 goto fail;
 668
 669         /* Emit the pageflip */
 670         ret = RING_SPACE(chan, 2);
 671         if (ret)
 672                 goto fail;
 673
 674         if (drm->device.info.family < NV_DEVICE_INFO_V0_FERMI)
 675                 BEGIN_NV04(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
 676         else
 677                 BEGIN_NVC0(chan, FermiSw, NV_SW_PAGE_FLIP, 1);
 678         OUT_RING  (chan, 0x00000000);
 679         FIRE_RING (chan);
 680
 681         ret = nouveau_fence_new(chan, false, pfence);
 682         if (ret)
 683                 goto fail;
 684
 685         return 0;
 686 fail:
 687         spin_lock_irqsave(&dev->event_lock, flags);
 688         list_del(&s->head);
 689         spin_unlock_irqrestore(&dev->event_lock, flags);
 690         return ret;
 691 }
 692
 693 int
 694 nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 695                        struct drm_pending_vblank_event *event, u32 flags)
 696 {
 697         const int swap_interval = (flags & DRM_MODE_PAGE_FLIP_ASYNC) ? 0 : 1;
 698         struct drm_device *dev = crtc->dev;
 699         struct nouveau_drm *drm = nouveau_drm(dev);
 700         struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->primary->fb)->nvbo;
 701         struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
 702         struct nouveau_page_flip_state *s;
 703         struct nouveau_channel *chan;
 704         struct nouveau_cli *cli;
 705         struct nouveau_fence *fence;
 706         int ret;
 707
 708         chan = drm->channel;
 709         if (!chan)
 710                 return -ENODEV;
 711         cli = (void *)nvif_client(&chan->device->base);
 712
 713         s = kzalloc(sizeof(*s), GFP_KERNEL);
 714         if (!s)
 715                 return -ENOMEM;
 716
 717         if (new_bo != old_bo) {
 718                 ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM, true);
 719                 if (ret)
 720                         goto fail_free;
 721         }
 722
 723         mutex_lock(&cli->mutex);
 724         ret = ttm_bo_reserve(&new_bo->bo, true, false, false, NULL);
 725         if (ret)
 726                 goto fail_unpin;
 727
 728         /* synchronise rendering channel with the kernel's channel */
 729         ret = nouveau_fence_sync(new_bo, chan, false, true);
 730         if (ret) {
 731                 ttm_bo_unreserve(&new_bo->bo);
 732                 goto fail_unpin;
 733         }
 734
 735         if (new_bo != old_bo) {
 736                 ttm_bo_unreserve(&new_bo->bo);
 737
 738                 ret = ttm_bo_reserve(&old_bo->bo, true, false, false, NULL);
 739                 if (ret)
 740                         goto fail_unpin;
 741         }
 742
 743         /* Initialize a page flip struct */
 744         *s = (struct nouveau_page_flip_state)
 745                 { { }, event, nouveau_crtc(crtc)->index,
 746                   fb->bits_per_pixel, fb->pitches[0], crtc->x, crtc->y,
 747                   new_bo->bo.offset };
 748
 749         /* Keep vblanks on during flip, for the target crtc of this flip */
 750         drm_vblank_get(dev, nouveau_crtc(crtc)->index);
 751
 752         /* Emit a page flip */
 753         if (drm->device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 754                 ret = nv50_display_flip_next(crtc, fb, chan, swap_interval);
 755                 if (ret)
 756                         goto fail_unreserve;
 757         } else {
 758                 struct nv04_display *dispnv04 = nv04_display(dev);
 759                 int head = nouveau_crtc(crtc)->index;
 760
 761                 if (swap_interval) {
 762                         ret = RING_SPACE(chan, 8);
 763                         if (ret)
 764                                 goto fail_unreserve;
 765
 766                         BEGIN_NV04(chan, NvSubImageBlit, 0x012c, 1);
 767                         OUT_RING  (chan, 0);
 768                         BEGIN_NV04(chan, NvSubImageBlit, 0x0134, 1);
 769                         OUT_RING  (chan, head);
 770                         BEGIN_NV04(chan, NvSubImageBlit, 0x0100, 1);
 771                         OUT_RING  (chan, 0);
 772                         BEGIN_NV04(chan, NvSubImageBlit, 0x0130, 1);
 773                         OUT_RING  (chan, 0);
 774                 }
 775
 776                 nouveau_bo_ref(new_bo, &dispnv04->image[head]);
 777         }
 778
 779         ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
 780         if (ret)
 781                 goto fail_unreserve;
 782         mutex_unlock(&cli->mutex);
 783
 784         /* Update the crtc struct and cleanup */
 785         crtc->primary->fb = fb;
 786
 787         nouveau_bo_fence(old_bo, fence, false);
 788         ttm_bo_unreserve(&old_bo->bo);
 789         if (old_bo != new_bo)
 790                 nouveau_bo_unpin(old_bo);
 791         nouveau_fence_unref(&fence);
 792         return 0;
 793
 794 fail_unreserve:
 795         drm_vblank_put(dev, nouveau_crtc(crtc)->index);
 796         ttm_bo_unreserve(&old_bo->bo);
 797 fail_unpin:
 798         mutex_unlock(&cli->mutex);
 799         if (old_bo != new_bo)
 800                 nouveau_bo_unpin(new_bo);
 801 fail_free:
 802         kfree(s);
 803         return ret;
 804 }
 805
 806 int
 807 nouveau_finish_page_flip(struct nouveau_channel *chan,
 808                          struct nouveau_page_flip_state *ps)
 809 {
 810         struct nouveau_fence_chan *fctx = chan->fence;
 811         struct nouveau_drm *drm = chan->drm;
 812         struct drm_device *dev = drm->dev;
 813         struct nouveau_page_flip_state *s;
 814         unsigned long flags;
 815         int crtcid = -1;
 816
 817         spin_lock_irqsave(&dev->event_lock, flags);
 818
 819         if (list_empty(&fctx->flip)) {
 820                 NV_ERROR(drm, "unexpected pageflip\n");
 821                 spin_unlock_irqrestore(&dev->event_lock, flags);
 822                 return -EINVAL;
 823         }
 824
 825         s = list_first_entry(&fctx->flip, struct nouveau_page_flip_state, head);
 826         if (s->event) {
 827                 /* Vblank timestamps/counts are only correct on >= NV-50 */
 828                 if (drm->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 829                         crtcid = s->crtc;
 830
 831                 drm_send_vblank_event(dev, crtcid, s->event);
 832         }
 833
 834         /* Give up ownership of vblank for page-flipped crtc */
 835         drm_vblank_put(dev, s->crtc);
 836
 837         list_del(&s->head);
 838         if (ps)
 839                 *ps = *s;
 840         kfree(s);
 841
 842         spin_unlock_irqrestore(&dev->event_lock, flags);
 843         return 0;
 844 }
 845
 846 int
 847 nouveau_flip_complete(void *data)
 848 {
 849         struct nouveau_channel *chan = data;
 850         struct nouveau_drm *drm = chan->drm;
 851         struct nouveau_page_flip_state state;
 852
 853         if (!nouveau_finish_page_flip(chan, &state)) {
 854                 if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 855                         nv_set_crtc_base(drm->dev, state.crtc, state.offset +
 856                                          state.y * state.pitch +
 857                                          state.x * state.bpp / 8);
 858                 }
 859         }
 860
 861         return 0;
 862 }
 863
 864 int
 865 nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
 866                             struct drm_mode_create_dumb *args)
 867 {
 868         struct nouveau_bo *bo;
 869         int ret;
 870
 871         args->pitch = roundup(args->width * (args->bpp / 8), 256);
 872         args->size = args->pitch * args->height;
 873         args->size = roundup(args->size, PAGE_SIZE);
 874
 875         ret = nouveau_gem_new(dev, args->size, 0, NOUVEAU_GEM_DOMAIN_VRAM, 0, 0, &bo);
 876         if (ret)
 877                 return ret;
 878
 879         ret = drm_gem_handle_create(file_priv, &bo->gem, &args->handle);
 880         drm_gem_object_unreference_unlocked(&bo->gem);
 881         return ret;
 882 }
 883
 884 int
 885 nouveau_display_dumb_map_offset(struct drm_file *file_priv,
 886                                 struct drm_device *dev,
 887                                 uint32_t handle, uint64_t *poffset)
 888 {
 889         struct drm_gem_object *gem;
 890
 891         gem = drm_gem_object_lookup(dev, file_priv, handle);
 892         if (gem) {
 893                 struct nouveau_bo *bo = nouveau_gem_object(gem);
 894                 *poffset = drm_vma_node_offset_addr(&bo->bo.vma_node);
 895                 drm_gem_object_unreference_unlocked(gem);
 896                 return 0;
 897         }
 898
 899         return -ENOENT;
 900 }