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 "drmP.h"
  28 #include "drm_crtc_helper.h"
  29 #include "nouveau_drv.h"
  30 #include "nouveau_fb.h"
  31 #include "nouveau_fbcon.h"
  32 #include "nouveau_hw.h"
  33 #include "nouveau_crtc.h"
  34 #include "nouveau_dma.h"
  35 #include "nouveau_connector.h"
  36 #include "nouveau_gpio.h"
  37 #include "nv50_display.h"
  38
  39 static void
  40 nouveau_user_framebuffer_destroy(struct drm_framebuffer *drm_fb)
  41 {
  42         struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
  43
  44         if (fb->nvbo)
  45                 drm_gem_object_unreference_unlocked(fb->nvbo->gem);
  46
  47         drm_framebuffer_cleanup(drm_fb);
  48         kfree(fb);
  49 }
  50
  51 static int
  52 nouveau_user_framebuffer_create_handle(struct drm_framebuffer *drm_fb,
  53                                        struct drm_file *file_priv,
  54                                        unsigned int *handle)
  55 {
  56         struct nouveau_framebuffer *fb = nouveau_framebuffer(drm_fb);
  57
  58         return drm_gem_handle_create(file_priv, fb->nvbo->gem, handle);
  59 }
  60
  61 static const struct drm_framebuffer_funcs nouveau_framebuffer_funcs = {
  62         .destroy = nouveau_user_framebuffer_destroy,
  63         .create_handle = nouveau_user_framebuffer_create_handle,
  64 };
  65
  66 int
  67 nouveau_framebuffer_init(struct drm_device *dev,
  68                          struct nouveau_framebuffer *nv_fb,
  69                          struct drm_mode_fb_cmd2 *mode_cmd,
  70                          struct nouveau_bo *nvbo)
  71 {
  72         struct drm_nouveau_private *dev_priv = dev->dev_private;
  73         struct drm_framebuffer *fb = &nv_fb->base;
  74         int ret;
  75
  76         ret = drm_framebuffer_init(dev, fb, &nouveau_framebuffer_funcs);
  77         if (ret) {
  78                 return ret;
  79         }
  80
  81         drm_helper_mode_fill_fb_struct(fb, mode_cmd);
  82         nv_fb->nvbo = nvbo;
  83
  84         if (dev_priv->card_type >= NV_50) {
  85                 u32 tile_flags = nouveau_bo_tile_layout(nvbo);
  86                 if (tile_flags == 0x7a00 ||
  87                     tile_flags == 0xfe00)
  88                         nv_fb->r_dma = NvEvoFB32;
  89                 else
  90                 if (tile_flags == 0x7000)
  91                         nv_fb->r_dma = NvEvoFB16;
  92                 else
  93                         nv_fb->r_dma = NvEvoVRAM_LP;
  94
  95                 switch (fb->depth) {
  96                 case  8: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_8; break;
  97                 case 15: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_15; break;
  98                 case 16: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_16; break;
  99                 case 24:
 100                 case 32: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_24; break;
 101                 case 30: nv_fb->r_format = NV50_EVO_CRTC_FB_DEPTH_30; break;
 102                 default:
 103                          NV_ERROR(dev, "unknown depth %d\n", fb->depth);
 104                          return -EINVAL;
 105                 }
 106
 107                 if (dev_priv->chipset == 0x50)
 108                         nv_fb->r_format |= (tile_flags << 8);
 109
 110                 if (!tile_flags) {
 111                         if (dev_priv->card_type < NV_D0)
 112                                 nv_fb->r_pitch = 0x00100000 | fb->pitches[0];
 113                         else
 114                                 nv_fb->r_pitch = 0x01000000 | fb->pitches[0];
 115                 } else {
 116                         u32 mode = nvbo->tile_mode;
 117                         if (dev_priv->card_type >= NV_C0)
 118                                 mode >>= 4;
 119                         nv_fb->r_pitch = ((fb->pitches[0] / 4) << 4) | mode;
 120                 }
 121         }
 122
 123         return 0;
 124 }
 125
 126 static struct drm_framebuffer *
 127 nouveau_user_framebuffer_create(struct drm_device *dev,
 128                                 struct drm_file *file_priv,
 129                                 struct drm_mode_fb_cmd2 *mode_cmd)
 130 {
 131         struct nouveau_framebuffer *nouveau_fb;
 132         struct drm_gem_object *gem;
 133         int ret;
 134
 135         gem = drm_gem_object_lookup(dev, file_priv, mode_cmd->handles[0]);
 136         if (!gem)
 137                 return ERR_PTR(-ENOENT);
 138
 139         nouveau_fb = kzalloc(sizeof(struct nouveau_framebuffer), GFP_KERNEL);
 140         if (!nouveau_fb)
 141                 return ERR_PTR(-ENOMEM);
 142
 143         ret = nouveau_framebuffer_init(dev, nouveau_fb, mode_cmd, nouveau_gem_object(gem));
 144         if (ret) {
 145                 drm_gem_object_unreference(gem);
 146                 return ERR_PTR(ret);
 147         }
 148
 149         return &nouveau_fb->base;
 150 }
 151
 152 static const struct drm_mode_config_funcs nouveau_mode_config_funcs = {
 153         .fb_create = nouveau_user_framebuffer_create,
 154         .output_poll_changed = nouveau_fbcon_output_poll_changed,
 155 };
 156
 157
 158 struct drm_prop_enum_list {
 159         u8 gen_mask;
 160         int type;
 161         char *name;
 162 };
 163
 164 static struct drm_prop_enum_list underscan[] = {
 165         { 6, UNDERSCAN_AUTO, "auto" },
 166         { 6, UNDERSCAN_OFF, "off" },
 167         { 6, UNDERSCAN_ON, "on" },
 168         {}
 169 };
 170
 171 static struct drm_prop_enum_list dither_mode[] = {
 172         { 7, DITHERING_MODE_AUTO, "auto" },
 173         { 7, DITHERING_MODE_OFF, "off" },
 174         { 1, DITHERING_MODE_ON, "on" },
 175         { 6, DITHERING_MODE_STATIC2X2, "static 2x2" },
 176         { 6, DITHERING_MODE_DYNAMIC2X2, "dynamic 2x2" },
 177         { 4, DITHERING_MODE_TEMPORAL, "temporal" },
 178         {}
 179 };
 180
 181 static struct drm_prop_enum_list dither_depth[] = {
 182         { 6, DITHERING_DEPTH_AUTO, "auto" },
 183         { 6, DITHERING_DEPTH_6BPC, "6 bpc" },
 184         { 6, DITHERING_DEPTH_8BPC, "8 bpc" },
 185         {}
 186 };
 187
 188 #define PROP_ENUM(p,gen,n,list) do {                                           \
 189         struct drm_prop_enum_list *l = (list);                                 \
 190         int c = 0;                                                             \
 191         while (l->gen_mask) {                                                  \
 192                 if (l->gen_mask & (1 << (gen)))                                \
 193                         c++;                                                   \
 194                 l++;                                                           \
 195         }                                                                      \
 196         if (c) {                                                               \
 197                 p = drm_property_create(dev, DRM_MODE_PROP_ENUM, n, c);        \
 198                 l = (list);                                                    \
 199                 c = 0;                                                         \
 200                 while (p && l->gen_mask) {                                     \
 201                         if (l->gen_mask & (1 << (gen))) {                      \
 202                                 drm_property_add_enum(p, c, l->type, l->name); \
 203                                 c++;                                           \
 204                         }                                                      \
 205                         l++;                                                   \
 206                 }                                                              \
 207         }                                                                      \
 208 } while(0)
 209
 210 int
 211 nouveau_display_init(struct drm_device *dev)
 212 {
 213         struct drm_nouveau_private *dev_priv = dev->dev_private;
 214         struct nouveau_display_engine *disp = &dev_priv->engine.display;
 215         struct drm_connector *connector;
 216         int ret;
 217
 218         ret = disp->init(dev);
 219         if (ret)
 220                 return ret;
 221
 222         drm_kms_helper_poll_enable(dev);
 223
 224         /* enable hotplug interrupts */
 225         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 226                 struct nouveau_connector *conn = nouveau_connector(connector);
 227                 nouveau_gpio_irq(dev, 0, conn->hpd, 0xff, true);
 228         }
 229
 230         return ret;
 231 }
 232
 233 void
 234 nouveau_display_fini(struct drm_device *dev)
 235 {
 236         struct drm_nouveau_private *dev_priv = dev->dev_private;
 237         struct nouveau_display_engine *disp = &dev_priv->engine.display;
 238         struct drm_connector *connector;
 239
 240         /* disable hotplug interrupts */
 241         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 242                 struct nouveau_connector *conn = nouveau_connector(connector);
 243                 nouveau_gpio_irq(dev, 0, conn->hpd, 0xff, false);
 244         }
 245
 246         drm_kms_helper_poll_disable(dev);
 247         disp->fini(dev);
 248 }
 249
 250 int
 251 nouveau_display_create(struct drm_device *dev)
 252 {
 253         struct drm_nouveau_private *dev_priv = dev->dev_private;
 254         struct nouveau_display_engine *disp = &dev_priv->engine.display;
 255         int ret, gen;
 256
 257         drm_mode_config_init(dev);
 258         drm_mode_create_scaling_mode_property(dev);
 259         drm_mode_create_dvi_i_properties(dev);
 260
 261         if (dev_priv->card_type < NV_50)
 262                 gen = 0;
 263         else
 264         if (dev_priv->card_type < NV_D0)
 265                 gen = 1;
 266         else
 267                 gen = 2;
 268
 269         PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
 270         PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
 271         PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);
 272
 273         disp->underscan_hborder_property =
 274                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 275                                     "underscan hborder", 2);
 276         disp->underscan_hborder_property->values[0] = 0;
 277         disp->underscan_hborder_property->values[1] = 128;
 278
 279         disp->underscan_vborder_property =
 280                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 281                                     "underscan vborder", 2);
 282         disp->underscan_vborder_property->values[0] = 0;
 283         disp->underscan_vborder_property->values[1] = 128;
 284
 285         dev->mode_config.funcs = (void *)&nouveau_mode_config_funcs;
 286         dev->mode_config.fb_base = pci_resource_start(dev->pdev, 1);
 287
 288         dev->mode_config.min_width = 0;
 289         dev->mode_config.min_height = 0;
 290         if (dev_priv->card_type < NV_10) {
 291                 dev->mode_config.max_width = 2048;
 292                 dev->mode_config.max_height = 2048;
 293         } else
 294         if (dev_priv->card_type < NV_50) {
 295                 dev->mode_config.max_width = 4096;
 296                 dev->mode_config.max_height = 4096;
 297         } else {
 298                 dev->mode_config.max_width = 8192;
 299                 dev->mode_config.max_height = 8192;
 300         }
 301
 302         drm_kms_helper_poll_init(dev);
 303         drm_kms_helper_poll_disable(dev);
 304
 305         ret = disp->create(dev);
 306         if (ret)
 307                 return ret;
 308
 309         if (dev->mode_config.num_crtc) {
 310                 ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
 311                 if (ret)
 312                         return ret;
 313         }
 314
 315         return ret;
 316 }
 317
 318 void
 319 nouveau_display_destroy(struct drm_device *dev)
 320 {
 321         struct drm_nouveau_private *dev_priv = dev->dev_private;
 322         struct nouveau_display_engine *disp = &dev_priv->engine.display;
 323
 324         drm_vblank_cleanup(dev);
 325
 326         disp->destroy(dev);
 327
 328         drm_kms_helper_poll_fini(dev);
 329         drm_mode_config_cleanup(dev);
 330 }
 331
 332 int
 333 nouveau_vblank_enable(struct drm_device *dev, int crtc)
 334 {
 335         struct drm_nouveau_private *dev_priv = dev->dev_private;
 336
 337         if (dev_priv->card_type >= NV_50)
 338                 nv_mask(dev, NV50_PDISPLAY_INTR_EN_1, 0,
 339                         NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc));
 340         else
 341                 NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0,
 342                             NV_PCRTC_INTR_0_VBLANK);
 343
 344         return 0;
 345 }
 346
 347 void
 348 nouveau_vblank_disable(struct drm_device *dev, int crtc)
 349 {
 350         struct drm_nouveau_private *dev_priv = dev->dev_private;
 351
 352         if (dev_priv->card_type >= NV_50)
 353                 nv_mask(dev, NV50_PDISPLAY_INTR_EN_1,
 354                         NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc), 0);
 355         else
 356                 NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0, 0);
 357 }
 358
 359 static int
 360 nouveau_page_flip_reserve(struct nouveau_bo *old_bo,
 361                           struct nouveau_bo *new_bo)
 362 {
 363         int ret;
 364
 365         ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM);
 366         if (ret)
 367                 return ret;
 368
 369         ret = ttm_bo_reserve(&new_bo->bo, false, false, false, 0);
 370         if (ret)
 371                 goto fail;
 372
 373         ret = ttm_bo_reserve(&old_bo->bo, false, false, false, 0);
 374         if (ret)
 375                 goto fail_unreserve;
 376
 377         return 0;
 378
 379 fail_unreserve:
 380         ttm_bo_unreserve(&new_bo->bo);
 381 fail:
 382         nouveau_bo_unpin(new_bo);
 383         return ret;
 384 }
 385
 386 static void
 387 nouveau_page_flip_unreserve(struct nouveau_bo *old_bo,
 388                             struct nouveau_bo *new_bo,
 389                             struct nouveau_fence *fence)
 390 {
 391         nouveau_bo_fence(new_bo, fence);
 392         ttm_bo_unreserve(&new_bo->bo);
 393
 394         nouveau_bo_fence(old_bo, fence);
 395         ttm_bo_unreserve(&old_bo->bo);
 396
 397         nouveau_bo_unpin(old_bo);
 398 }
 399
 400 static int
 401 nouveau_page_flip_emit(struct nouveau_channel *chan,
 402                        struct nouveau_bo *old_bo,
 403                        struct nouveau_bo *new_bo,
 404                        struct nouveau_page_flip_state *s,
 405                        struct nouveau_fence **pfence)
 406 {
 407         struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
 408         struct drm_device *dev = chan->dev;
 409         unsigned long flags;
 410         int ret;
 411
 412         /* Queue it to the pending list */
 413         spin_lock_irqsave(&dev->event_lock, flags);
 414         list_add_tail(&s->head, &chan->nvsw.flip);
 415         spin_unlock_irqrestore(&dev->event_lock, flags);
 416
 417         /* Synchronize with the old framebuffer */
 418         ret = nouveau_fence_sync(old_bo->bo.sync_obj, chan);
 419         if (ret)
 420                 goto fail;
 421
 422         /* Emit the pageflip */
 423         ret = RING_SPACE(chan, 2);
 424         if (ret)
 425                 goto fail;
 426
 427         if (dev_priv->card_type < NV_C0)
 428                 BEGIN_RING(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
 429         else
 430                 BEGIN_NVC0(chan, 2, NvSubM2MF, 0x0500, 1);
 431         OUT_RING  (chan, 0);
 432         FIRE_RING (chan);
 433
 434         ret = nouveau_fence_new(chan, pfence, true);
 435         if (ret)
 436                 goto fail;
 437
 438         return 0;
 439 fail:
 440         spin_lock_irqsave(&dev->event_lock, flags);
 441         list_del(&s->head);
 442         spin_unlock_irqrestore(&dev->event_lock, flags);
 443         return ret;
 444 }
 445
 446 int
 447 nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 448                        struct drm_pending_vblank_event *event)
 449 {
 450         struct drm_device *dev = crtc->dev;
 451         struct drm_nouveau_private *dev_priv = dev->dev_private;
 452         struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->fb)->nvbo;
 453         struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
 454         struct nouveau_page_flip_state *s;
 455         struct nouveau_channel *chan;
 456         struct nouveau_fence *fence;
 457         int ret;
 458
 459         if (!dev_priv->channel)
 460                 return -ENODEV;
 461
 462         s = kzalloc(sizeof(*s), GFP_KERNEL);
 463         if (!s)
 464                 return -ENOMEM;
 465
 466         /* Don't let the buffers go away while we flip */
 467         ret = nouveau_page_flip_reserve(old_bo, new_bo);
 468         if (ret)
 469                 goto fail_free;
 470
 471         /* Initialize a page flip struct */
 472         *s = (struct nouveau_page_flip_state)
 473                 { { }, event, nouveau_crtc(crtc)->index,
 474                   fb->bits_per_pixel, fb->pitches[0], crtc->x, crtc->y,
 475                   new_bo->bo.offset };
 476
 477         /* Choose the channel the flip will be handled in */
 478         chan = nouveau_fence_channel(new_bo->bo.sync_obj);
 479         if (!chan)
 480                 chan = nouveau_channel_get_unlocked(dev_priv->channel);
 481         mutex_lock(&chan->mutex);
 482
 483         /* Emit a page flip */
 484         if (dev_priv->card_type >= NV_50) {
 485                 if (dev_priv->card_type >= NV_D0)
 486                         ret = nvd0_display_flip_next(crtc, fb, chan, 0);
 487                 else
 488                         ret = nv50_display_flip_next(crtc, fb, chan);
 489                 if (ret) {
 490                         nouveau_channel_put(&chan);
 491                         goto fail_unreserve;
 492                 }
 493         }
 494
 495         ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
 496         nouveau_channel_put(&chan);
 497         if (ret)
 498                 goto fail_unreserve;
 499
 500         /* Update the crtc struct and cleanup */
 501         crtc->fb = fb;
 502
 503         nouveau_page_flip_unreserve(old_bo, new_bo, fence);
 504         nouveau_fence_unref(&fence);
 505         return 0;
 506
 507 fail_unreserve:
 508         nouveau_page_flip_unreserve(old_bo, new_bo, NULL);
 509 fail_free:
 510         kfree(s);
 511         return ret;
 512 }
 513
 514 int
 515 nouveau_finish_page_flip(struct nouveau_channel *chan,
 516                          struct nouveau_page_flip_state *ps)
 517 {
 518         struct drm_device *dev = chan->dev;
 519         struct nouveau_page_flip_state *s;
 520         unsigned long flags;
 521
 522         spin_lock_irqsave(&dev->event_lock, flags);
 523
 524         if (list_empty(&chan->nvsw.flip)) {
 525                 NV_ERROR(dev, "Unexpected pageflip in channel %d.\n", chan->id);
 526                 spin_unlock_irqrestore(&dev->event_lock, flags);
 527                 return -EINVAL;
 528         }
 529
 530         s = list_first_entry(&chan->nvsw.flip,
 531                              struct nouveau_page_flip_state, head);
 532         if (s->event) {
 533                 struct drm_pending_vblank_event *e = s->event;
 534                 struct timeval now;
 535
 536                 do_gettimeofday(&now);
 537                 e->event.sequence = 0;
 538                 e->event.tv_sec = now.tv_sec;
 539                 e->event.tv_usec = now.tv_usec;
 540                 list_add_tail(&e->base.link, &e->base.file_priv->event_list);
 541                 wake_up_interruptible(&e->base.file_priv->event_wait);
 542         }
 543
 544         list_del(&s->head);
 545         if (ps)
 546                 *ps = *s;
 547         kfree(s);
 548
 549         spin_unlock_irqrestore(&dev->event_lock, flags);
 550         return 0;
 551 }
 552
 553 int
 554 nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
 555                             struct drm_mode_create_dumb *args)
 556 {
 557         struct nouveau_bo *bo;
 558         int ret;
 559
 560         args->pitch = roundup(args->width * (args->bpp / 8), 256);
 561         args->size = args->pitch * args->height;
 562         args->size = roundup(args->size, PAGE_SIZE);
 563
 564         ret = nouveau_gem_new(dev, args->size, 0, TTM_PL_FLAG_VRAM, 0, 0, &bo);
 565         if (ret)
 566                 return ret;
 567
 568         ret = drm_gem_handle_create(file_priv, bo->gem, &args->handle);
 569         drm_gem_object_unreference_unlocked(bo->gem);
 570         return ret;
 571 }
 572
 573 int
 574 nouveau_display_dumb_destroy(struct drm_file *file_priv, struct drm_device *dev,
 575                              uint32_t handle)
 576 {
 577         return drm_gem_handle_delete(file_priv, handle);
 578 }
 579
 580 int
 581 nouveau_display_dumb_map_offset(struct drm_file *file_priv,
 582                                 struct drm_device *dev,
 583                                 uint32_t handle, uint64_t *poffset)
 584 {
 585         struct drm_gem_object *gem;
 586
 587         gem = drm_gem_object_lookup(dev, file_priv, handle);
 588         if (gem) {
 589                 struct nouveau_bo *bo = gem->driver_private;
 590                 *poffset = bo->bo.addr_space_offset;
 591                 drm_gem_object_unreference_unlocked(gem);
 592                 return 0;
 593         }
 594
 595         return -ENOENT;
 596 }