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                         GM107_DISP,
 483                         GK110_DISP,
 484                         GK104_DISP,
 485                         GF110_DISP,
 486                         GT214_DISP,
 487                         GT206_DISP,
 488                         GT200_DISP,
 489                         G82_DISP,
 490                         NV50_DISP,
 491                         NV04_DISP,
 492                 };
 493                 int i;
 494
 495                 for (i = 0, ret = -ENODEV; ret && i < ARRAY_SIZE(oclass); i++) {
 496                         ret = nvif_object_init(nvif_object(&drm->device), NULL,
 497                                                NVDRM_DISPLAY, oclass[i],
 498                                                NULL, 0, &disp->disp);
 499                 }
 500
 501                 if (ret == 0) {
 502                         nouveau_display_create_properties(dev);
 503                         if (disp->disp.oclass < NV50_DISP)
 504                                 ret = nv04_display_create(dev);
 505                         else
 506                                 ret = nv50_display_create(dev);
 507                 }
 508         } else {
 509                 ret = 0;
 510         }
 511
 512         if (ret)
 513                 goto disp_create_err;
 514
 515         if (dev->mode_config.num_crtc) {
 516                 ret = nouveau_display_vblank_init(dev);
 517                 if (ret)
 518                         goto vblank_err;
 519         }
 520
 521         nouveau_backlight_init(dev);
 522         return 0;
 523
 524 vblank_err:
 525         disp->dtor(dev);
 526 disp_create_err:
 527         drm_kms_helper_poll_fini(dev);
 528         drm_mode_config_cleanup(dev);
 529         return ret;
 530 }
 531
 532 void
 533 nouveau_display_destroy(struct drm_device *dev)
 534 {
 535         struct nouveau_display *disp = nouveau_display(dev);
 536
 537         nouveau_backlight_exit(dev);
 538         nouveau_display_vblank_fini(dev);
 539
 540         drm_kms_helper_poll_fini(dev);
 541         drm_mode_config_cleanup(dev);
 542
 543         if (disp->dtor)
 544                 disp->dtor(dev);
 545
 546         nvif_object_fini(&disp->disp);
 547
 548         nouveau_drm(dev)->display = NULL;
 549         kfree(disp);
 550 }
 551
 552 int
 553 nouveau_display_suspend(struct drm_device *dev, bool runtime)
 554 {
 555         struct drm_crtc *crtc;
 556
 557         nouveau_display_fini(dev);
 558
 559         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 560                 struct nouveau_framebuffer *nouveau_fb;
 561
 562                 nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
 563                 if (!nouveau_fb || !nouveau_fb->nvbo)
 564                         continue;
 565
 566                 nouveau_bo_unpin(nouveau_fb->nvbo);
 567         }
 568
 569         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 570                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 571
 572                 nouveau_bo_unmap(nv_crtc->cursor.nvbo);
 573                 nouveau_bo_unpin(nv_crtc->cursor.nvbo);
 574         }
 575
 576         return 0;
 577 }
 578
 579 void
 580 nouveau_display_resume(struct drm_device *dev, bool runtime)
 581 {
 582         struct nouveau_drm *drm = nouveau_drm(dev);
 583         struct drm_crtc *crtc;
 584         int ret, head;
 585
 586         /* re-pin fb/cursors */
 587         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 588                 struct nouveau_framebuffer *nouveau_fb;
 589
 590                 nouveau_fb = nouveau_framebuffer(crtc->primary->fb);
 591                 if (!nouveau_fb || !nouveau_fb->nvbo)
 592                         continue;
 593
 594                 ret = nouveau_bo_pin(nouveau_fb->nvbo, TTM_PL_FLAG_VRAM);
 595                 if (ret)
 596                         NV_ERROR(drm, "Could not pin framebuffer\n");
 597         }
 598
 599         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 600                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 601
 602                 ret = nouveau_bo_pin(nv_crtc->cursor.nvbo, TTM_PL_FLAG_VRAM);
 603                 if (!ret)
 604                         ret = nouveau_bo_map(nv_crtc->cursor.nvbo);
 605                 if (ret)
 606                         NV_ERROR(drm, "Could not pin/map cursor.\n");
 607         }
 608
 609         nouveau_display_init(dev);
 610
 611         /* Force CLUT to get re-loaded during modeset */
 612         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 613                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 614
 615                 nv_crtc->lut.depth = 0;
 616         }
 617
 618         /* Make sure that drm and hw vblank irqs get resumed if needed. */
 619         for (head = 0; head < dev->mode_config.num_crtc; head++)
 620                 drm_vblank_on(dev, head);
 621
 622         /* This should ensure we don't hit a locking problem when someone
 623          * wakes us up via a connector.  We should never go into suspend
 624          * while the display is on anyways.
 625          */
 626         if (runtime)
 627                 return;
 628
 629         drm_helper_resume_force_mode(dev);
 630
 631         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 632                 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
 633                 u32 offset = nv_crtc->cursor.nvbo->bo.offset;
 634
 635                 nv_crtc->cursor.set_offset(nv_crtc, offset);
 636                 nv_crtc->cursor.set_pos(nv_crtc, nv_crtc->cursor_saved_x,
 637                                                  nv_crtc->cursor_saved_y);
 638         }
 639 }
 640
 641 static int
 642 nouveau_page_flip_emit(struct nouveau_channel *chan,
 643                        struct nouveau_bo *old_bo,
 644                        struct nouveau_bo *new_bo,
 645                        struct nouveau_page_flip_state *s,
 646                        struct nouveau_fence **pfence)
 647 {
 648         struct nouveau_fence_chan *fctx = chan->fence;
 649         struct nouveau_drm *drm = chan->drm;
 650         struct drm_device *dev = drm->dev;
 651         unsigned long flags;
 652         int ret;
 653
 654         /* Queue it to the pending list */
 655         spin_lock_irqsave(&dev->event_lock, flags);
 656         list_add_tail(&s->head, &fctx->flip);
 657         spin_unlock_irqrestore(&dev->event_lock, flags);
 658
 659         /* Synchronize with the old framebuffer */
 660         ret = nouveau_fence_sync(old_bo, chan, false, false);
 661         if (ret)
 662                 goto fail;
 663
 664         /* Emit the pageflip */
 665         ret = RING_SPACE(chan, 2);
 666         if (ret)
 667                 goto fail;
 668
 669         if (drm->device.info.family < NV_DEVICE_INFO_V0_FERMI)
 670                 BEGIN_NV04(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
 671         else
 672                 BEGIN_NVC0(chan, FermiSw, NV_SW_PAGE_FLIP, 1);
 673         OUT_RING  (chan, 0x00000000);
 674         FIRE_RING (chan);
 675
 676         ret = nouveau_fence_new(chan, false, pfence);
 677         if (ret)
 678                 goto fail;
 679
 680         return 0;
 681 fail:
 682         spin_lock_irqsave(&dev->event_lock, flags);
 683         list_del(&s->head);
 684         spin_unlock_irqrestore(&dev->event_lock, flags);
 685         return ret;
 686 }
 687
 688 int
 689 nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 690                        struct drm_pending_vblank_event *event, u32 flags)
 691 {
 692         const int swap_interval = (flags & DRM_MODE_PAGE_FLIP_ASYNC) ? 0 : 1;
 693         struct drm_device *dev = crtc->dev;
 694         struct nouveau_drm *drm = nouveau_drm(dev);
 695         struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->primary->fb)->nvbo;
 696         struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
 697         struct nouveau_page_flip_state *s;
 698         struct nouveau_channel *chan;
 699         struct nouveau_cli *cli;
 700         struct nouveau_fence *fence;
 701         int ret;
 702
 703         chan = drm->channel;
 704         if (!chan)
 705                 return -ENODEV;
 706         cli = (void *)nvif_client(&chan->device->base);
 707
 708         s = kzalloc(sizeof(*s), GFP_KERNEL);
 709         if (!s)
 710                 return -ENOMEM;
 711
 712         if (new_bo != old_bo) {
 713                 ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM);
 714                 if (ret)
 715                         goto fail_free;
 716         }
 717
 718         mutex_lock(&cli->mutex);
 719         ret = ttm_bo_reserve(&new_bo->bo, true, false, false, NULL);
 720         if (ret)
 721                 goto fail_unpin;
 722
 723         /* synchronise rendering channel with the kernel's channel */
 724         ret = nouveau_fence_sync(new_bo, chan, false, true);
 725         if (ret) {
 726                 ttm_bo_unreserve(&new_bo->bo);
 727                 goto fail_unpin;
 728         }
 729
 730         if (new_bo != old_bo) {
 731                 ttm_bo_unreserve(&new_bo->bo);
 732
 733                 ret = ttm_bo_reserve(&old_bo->bo, true, false, false, NULL);
 734                 if (ret)
 735                         goto fail_unpin;
 736         }
 737
 738         /* Initialize a page flip struct */
 739         *s = (struct nouveau_page_flip_state)
 740                 { { }, event, nouveau_crtc(crtc)->index,
 741                   fb->bits_per_pixel, fb->pitches[0], crtc->x, crtc->y,
 742                   new_bo->bo.offset };
 743
 744         /* Keep vblanks on during flip, for the target crtc of this flip */
 745         drm_vblank_get(dev, nouveau_crtc(crtc)->index);
 746
 747         /* Emit a page flip */
 748         if (drm->device.info.family >= NV_DEVICE_INFO_V0_TESLA) {
 749                 ret = nv50_display_flip_next(crtc, fb, chan, swap_interval);
 750                 if (ret)
 751                         goto fail_unreserve;
 752         } else {
 753                 struct nv04_display *dispnv04 = nv04_display(dev);
 754                 int head = nouveau_crtc(crtc)->index;
 755
 756                 if (swap_interval) {
 757                         ret = RING_SPACE(chan, 8);
 758                         if (ret)
 759                                 goto fail_unreserve;
 760
 761                         BEGIN_NV04(chan, NvSubImageBlit, 0x012c, 1);
 762                         OUT_RING  (chan, 0);
 763                         BEGIN_NV04(chan, NvSubImageBlit, 0x0134, 1);
 764                         OUT_RING  (chan, head);
 765                         BEGIN_NV04(chan, NvSubImageBlit, 0x0100, 1);
 766                         OUT_RING  (chan, 0);
 767                         BEGIN_NV04(chan, NvSubImageBlit, 0x0130, 1);
 768                         OUT_RING  (chan, 0);
 769                 }
 770
 771                 nouveau_bo_ref(new_bo, &dispnv04->image[head]);
 772         }
 773
 774         ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
 775         if (ret)
 776                 goto fail_unreserve;
 777         mutex_unlock(&cli->mutex);
 778
 779         /* Update the crtc struct and cleanup */
 780         crtc->primary->fb = fb;
 781
 782         nouveau_bo_fence(old_bo, fence, false);
 783         ttm_bo_unreserve(&old_bo->bo);
 784         if (old_bo != new_bo)
 785                 nouveau_bo_unpin(old_bo);
 786         nouveau_fence_unref(&fence);
 787         return 0;
 788
 789 fail_unreserve:
 790         drm_vblank_put(dev, nouveau_crtc(crtc)->index);
 791         ttm_bo_unreserve(&old_bo->bo);
 792 fail_unpin:
 793         mutex_unlock(&cli->mutex);
 794         if (old_bo != new_bo)
 795                 nouveau_bo_unpin(new_bo);
 796 fail_free:
 797         kfree(s);
 798         return ret;
 799 }
 800
 801 int
 802 nouveau_finish_page_flip(struct nouveau_channel *chan,
 803                          struct nouveau_page_flip_state *ps)
 804 {
 805         struct nouveau_fence_chan *fctx = chan->fence;
 806         struct nouveau_drm *drm = chan->drm;
 807         struct drm_device *dev = drm->dev;
 808         struct nouveau_page_flip_state *s;
 809         unsigned long flags;
 810         int crtcid = -1;
 811
 812         spin_lock_irqsave(&dev->event_lock, flags);
 813
 814         if (list_empty(&fctx->flip)) {
 815                 NV_ERROR(drm, "unexpected pageflip\n");
 816                 spin_unlock_irqrestore(&dev->event_lock, flags);
 817                 return -EINVAL;
 818         }
 819
 820         s = list_first_entry(&fctx->flip, struct nouveau_page_flip_state, head);
 821         if (s->event) {
 822                 /* Vblank timestamps/counts are only correct on >= NV-50 */
 823                 if (drm->device.info.family >= NV_DEVICE_INFO_V0_TESLA)
 824                         crtcid = s->crtc;
 825
 826                 drm_send_vblank_event(dev, crtcid, s->event);
 827         }
 828
 829         /* Give up ownership of vblank for page-flipped crtc */
 830         drm_vblank_put(dev, s->crtc);
 831
 832         list_del(&s->head);
 833         if (ps)
 834                 *ps = *s;
 835         kfree(s);
 836
 837         spin_unlock_irqrestore(&dev->event_lock, flags);
 838         return 0;
 839 }
 840
 841 int
 842 nouveau_flip_complete(void *data)
 843 {
 844         struct nouveau_channel *chan = data;
 845         struct nouveau_drm *drm = chan->drm;
 846         struct nouveau_page_flip_state state;
 847
 848         if (!nouveau_finish_page_flip(chan, &state)) {
 849                 if (drm->device.info.family < NV_DEVICE_INFO_V0_TESLA) {
 850                         nv_set_crtc_base(drm->dev, state.crtc, state.offset +
 851                                          state.y * state.pitch +
 852                                          state.x * state.bpp / 8);
 853                 }
 854         }
 855
 856         return 0;
 857 }
 858
 859 int
 860 nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
 861                             struct drm_mode_create_dumb *args)
 862 {
 863         struct nouveau_bo *bo;
 864         int ret;
 865
 866         args->pitch = roundup(args->width * (args->bpp / 8), 256);
 867         args->size = args->pitch * args->height;
 868         args->size = roundup(args->size, PAGE_SIZE);
 869
 870         ret = nouveau_gem_new(dev, args->size, 0, NOUVEAU_GEM_DOMAIN_VRAM, 0, 0, &bo);
 871         if (ret)
 872                 return ret;
 873
 874         bo->gem.dumb = true;
 875         ret = drm_gem_handle_create(file_priv, &bo->gem, &args->handle);
 876         drm_gem_object_unreference_unlocked(&bo->gem);
 877         return ret;
 878 }
 879
 880 int
 881 nouveau_display_dumb_map_offset(struct drm_file *file_priv,
 882                                 struct drm_device *dev,
 883                                 uint32_t handle, uint64_t *poffset)
 884 {
 885         struct drm_gem_object *gem;
 886
 887         gem = drm_gem_object_lookup(dev, file_priv, handle);
 888         if (gem) {
 889                 struct nouveau_bo *bo = nouveau_gem_object(gem);
 890
 891                 /*
 892                  * We don't allow dumb mmaps on objects created using another
 893                  * interface.
 894                  */
 895                 WARN_ONCE(!(gem->dumb || gem->import_attach),
 896                           "Illegal dumb map of accelerated buffer.\n");
 897
 898                 *poffset = drm_vma_node_offset_addr(&bo->bo.vma_node);
 899                 drm_gem_object_unreference_unlocked(gem);
 900                 return 0;
 901         }
 902
 903         return -ENOENT;
 904 }