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         /* power on internal panel if it's not already.  the init tables of
 223          * some vbios default this to off for some reason, causing the
 224          * panel to not work after resume
 225          */
 226         if (nouveau_gpio_func_get(dev, DCB_GPIO_PANEL_POWER) == 0) {
 227                 nouveau_gpio_func_set(dev, DCB_GPIO_PANEL_POWER, true);
 228                 msleep(300);
 229         }
 230
 231         /* enable polling for external displays */
 232         drm_kms_helper_poll_enable(dev);
 233
 234         /* enable hotplug interrupts */
 235         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 236                 struct nouveau_connector *conn = nouveau_connector(connector);
 237                 nouveau_gpio_irq(dev, 0, conn->hpd, 0xff, true);
 238         }
 239
 240         return ret;
 241 }
 242
 243 void
 244 nouveau_display_fini(struct drm_device *dev)
 245 {
 246         struct drm_nouveau_private *dev_priv = dev->dev_private;
 247         struct nouveau_display_engine *disp = &dev_priv->engine.display;
 248         struct drm_connector *connector;
 249
 250         /* disable hotplug interrupts */
 251         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 252                 struct nouveau_connector *conn = nouveau_connector(connector);
 253                 nouveau_gpio_irq(dev, 0, conn->hpd, 0xff, false);
 254         }
 255
 256         drm_kms_helper_poll_disable(dev);
 257         disp->fini(dev);
 258 }
 259
 260 int
 261 nouveau_display_create(struct drm_device *dev)
 262 {
 263         struct drm_nouveau_private *dev_priv = dev->dev_private;
 264         struct nouveau_display_engine *disp = &dev_priv->engine.display;
 265         int ret, gen;
 266
 267         drm_mode_config_init(dev);
 268         drm_mode_create_scaling_mode_property(dev);
 269         drm_mode_create_dvi_i_properties(dev);
 270
 271         if (dev_priv->card_type < NV_50)
 272                 gen = 0;
 273         else
 274         if (dev_priv->card_type < NV_D0)
 275                 gen = 1;
 276         else
 277                 gen = 2;
 278
 279         PROP_ENUM(disp->dithering_mode, gen, "dithering mode", dither_mode);
 280         PROP_ENUM(disp->dithering_depth, gen, "dithering depth", dither_depth);
 281         PROP_ENUM(disp->underscan_property, gen, "underscan", underscan);
 282
 283         disp->underscan_hborder_property =
 284                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 285                                     "underscan hborder", 2);
 286         disp->underscan_hborder_property->values[0] = 0;
 287         disp->underscan_hborder_property->values[1] = 128;
 288
 289         disp->underscan_vborder_property =
 290                 drm_property_create(dev, DRM_MODE_PROP_RANGE,
 291                                     "underscan vborder", 2);
 292         disp->underscan_vborder_property->values[0] = 0;
 293         disp->underscan_vborder_property->values[1] = 128;
 294
 295         dev->mode_config.funcs = (void *)&nouveau_mode_config_funcs;
 296         dev->mode_config.fb_base = pci_resource_start(dev->pdev, 1);
 297
 298         dev->mode_config.min_width = 0;
 299         dev->mode_config.min_height = 0;
 300         if (dev_priv->card_type < NV_10) {
 301                 dev->mode_config.max_width = 2048;
 302                 dev->mode_config.max_height = 2048;
 303         } else
 304         if (dev_priv->card_type < NV_50) {
 305                 dev->mode_config.max_width = 4096;
 306                 dev->mode_config.max_height = 4096;
 307         } else {
 308                 dev->mode_config.max_width = 8192;
 309                 dev->mode_config.max_height = 8192;
 310         }
 311
 312         drm_kms_helper_poll_init(dev);
 313         drm_kms_helper_poll_disable(dev);
 314
 315         ret = disp->create(dev);
 316         if (ret)
 317                 return ret;
 318
 319         if (dev->mode_config.num_crtc) {
 320                 ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
 321                 if (ret)
 322                         return ret;
 323         }
 324
 325         return ret;
 326 }
 327
 328 void
 329 nouveau_display_destroy(struct drm_device *dev)
 330 {
 331         struct drm_nouveau_private *dev_priv = dev->dev_private;
 332         struct nouveau_display_engine *disp = &dev_priv->engine.display;
 333
 334         drm_vblank_cleanup(dev);
 335
 336         disp->destroy(dev);
 337
 338         drm_kms_helper_poll_fini(dev);
 339         drm_mode_config_cleanup(dev);
 340 }
 341
 342 int
 343 nouveau_vblank_enable(struct drm_device *dev, int crtc)
 344 {
 345         struct drm_nouveau_private *dev_priv = dev->dev_private;
 346
 347         if (dev_priv->card_type >= NV_50)
 348                 nv_mask(dev, NV50_PDISPLAY_INTR_EN_1, 0,
 349                         NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc));
 350         else
 351                 NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0,
 352                             NV_PCRTC_INTR_0_VBLANK);
 353
 354         return 0;
 355 }
 356
 357 void
 358 nouveau_vblank_disable(struct drm_device *dev, int crtc)
 359 {
 360         struct drm_nouveau_private *dev_priv = dev->dev_private;
 361
 362         if (dev_priv->card_type >= NV_50)
 363                 nv_mask(dev, NV50_PDISPLAY_INTR_EN_1,
 364                         NV50_PDISPLAY_INTR_EN_1_VBLANK_CRTC_(crtc), 0);
 365         else
 366                 NVWriteCRTC(dev, crtc, NV_PCRTC_INTR_EN_0, 0);
 367 }
 368
 369 static int
 370 nouveau_page_flip_reserve(struct nouveau_bo *old_bo,
 371                           struct nouveau_bo *new_bo)
 372 {
 373         int ret;
 374
 375         ret = nouveau_bo_pin(new_bo, TTM_PL_FLAG_VRAM);
 376         if (ret)
 377                 return ret;
 378
 379         ret = ttm_bo_reserve(&new_bo->bo, false, false, false, 0);
 380         if (ret)
 381                 goto fail;
 382
 383         ret = ttm_bo_reserve(&old_bo->bo, false, false, false, 0);
 384         if (ret)
 385                 goto fail_unreserve;
 386
 387         return 0;
 388
 389 fail_unreserve:
 390         ttm_bo_unreserve(&new_bo->bo);
 391 fail:
 392         nouveau_bo_unpin(new_bo);
 393         return ret;
 394 }
 395
 396 static void
 397 nouveau_page_flip_unreserve(struct nouveau_bo *old_bo,
 398                             struct nouveau_bo *new_bo,
 399                             struct nouveau_fence *fence)
 400 {
 401         nouveau_bo_fence(new_bo, fence);
 402         ttm_bo_unreserve(&new_bo->bo);
 403
 404         nouveau_bo_fence(old_bo, fence);
 405         ttm_bo_unreserve(&old_bo->bo);
 406
 407         nouveau_bo_unpin(old_bo);
 408 }
 409
 410 static int
 411 nouveau_page_flip_emit(struct nouveau_channel *chan,
 412                        struct nouveau_bo *old_bo,
 413                        struct nouveau_bo *new_bo,
 414                        struct nouveau_page_flip_state *s,
 415                        struct nouveau_fence **pfence)
 416 {
 417         struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
 418         struct drm_device *dev = chan->dev;
 419         unsigned long flags;
 420         int ret;
 421
 422         /* Queue it to the pending list */
 423         spin_lock_irqsave(&dev->event_lock, flags);
 424         list_add_tail(&s->head, &chan->nvsw.flip);
 425         spin_unlock_irqrestore(&dev->event_lock, flags);
 426
 427         /* Synchronize with the old framebuffer */
 428         ret = nouveau_fence_sync(old_bo->bo.sync_obj, chan);
 429         if (ret)
 430                 goto fail;
 431
 432         /* Emit the pageflip */
 433         ret = RING_SPACE(chan, 2);
 434         if (ret)
 435                 goto fail;
 436
 437         if (dev_priv->card_type < NV_C0)
 438                 BEGIN_RING(chan, NvSubSw, NV_SW_PAGE_FLIP, 1);
 439         else
 440                 BEGIN_NVC0(chan, 2, NvSubM2MF, 0x0500, 1);
 441         OUT_RING  (chan, 0);
 442         FIRE_RING (chan);
 443
 444         ret = nouveau_fence_new(chan, pfence, true);
 445         if (ret)
 446                 goto fail;
 447
 448         return 0;
 449 fail:
 450         spin_lock_irqsave(&dev->event_lock, flags);
 451         list_del(&s->head);
 452         spin_unlock_irqrestore(&dev->event_lock, flags);
 453         return ret;
 454 }
 455
 456 int
 457 nouveau_crtc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 458                        struct drm_pending_vblank_event *event)
 459 {
 460         struct drm_device *dev = crtc->dev;
 461         struct drm_nouveau_private *dev_priv = dev->dev_private;
 462         struct nouveau_bo *old_bo = nouveau_framebuffer(crtc->fb)->nvbo;
 463         struct nouveau_bo *new_bo = nouveau_framebuffer(fb)->nvbo;
 464         struct nouveau_page_flip_state *s;
 465         struct nouveau_channel *chan;
 466         struct nouveau_fence *fence;
 467         int ret;
 468
 469         if (!dev_priv->channel)
 470                 return -ENODEV;
 471
 472         s = kzalloc(sizeof(*s), GFP_KERNEL);
 473         if (!s)
 474                 return -ENOMEM;
 475
 476         /* Don't let the buffers go away while we flip */
 477         ret = nouveau_page_flip_reserve(old_bo, new_bo);
 478         if (ret)
 479                 goto fail_free;
 480
 481         /* Initialize a page flip struct */
 482         *s = (struct nouveau_page_flip_state)
 483                 { { }, event, nouveau_crtc(crtc)->index,
 484                   fb->bits_per_pixel, fb->pitches[0], crtc->x, crtc->y,
 485                   new_bo->bo.offset };
 486
 487         /* Choose the channel the flip will be handled in */
 488         chan = nouveau_fence_channel(new_bo->bo.sync_obj);
 489         if (!chan)
 490                 chan = nouveau_channel_get_unlocked(dev_priv->channel);
 491         mutex_lock(&chan->mutex);
 492
 493         /* Emit a page flip */
 494         if (dev_priv->card_type >= NV_50) {
 495                 if (dev_priv->card_type >= NV_D0)
 496                         ret = nvd0_display_flip_next(crtc, fb, chan, 0);
 497                 else
 498                         ret = nv50_display_flip_next(crtc, fb, chan);
 499                 if (ret) {
 500                         nouveau_channel_put(&chan);
 501                         goto fail_unreserve;
 502                 }
 503         }
 504
 505         ret = nouveau_page_flip_emit(chan, old_bo, new_bo, s, &fence);
 506         nouveau_channel_put(&chan);
 507         if (ret)
 508                 goto fail_unreserve;
 509
 510         /* Update the crtc struct and cleanup */
 511         crtc->fb = fb;
 512
 513         nouveau_page_flip_unreserve(old_bo, new_bo, fence);
 514         nouveau_fence_unref(&fence);
 515         return 0;
 516
 517 fail_unreserve:
 518         nouveau_page_flip_unreserve(old_bo, new_bo, NULL);
 519 fail_free:
 520         kfree(s);
 521         return ret;
 522 }
 523
 524 int
 525 nouveau_finish_page_flip(struct nouveau_channel *chan,
 526                          struct nouveau_page_flip_state *ps)
 527 {
 528         struct drm_device *dev = chan->dev;
 529         struct nouveau_page_flip_state *s;
 530         unsigned long flags;
 531
 532         spin_lock_irqsave(&dev->event_lock, flags);
 533
 534         if (list_empty(&chan->nvsw.flip)) {
 535                 NV_ERROR(dev, "Unexpected pageflip in channel %d.\n", chan->id);
 536                 spin_unlock_irqrestore(&dev->event_lock, flags);
 537                 return -EINVAL;
 538         }
 539
 540         s = list_first_entry(&chan->nvsw.flip,
 541                              struct nouveau_page_flip_state, head);
 542         if (s->event) {
 543                 struct drm_pending_vblank_event *e = s->event;
 544                 struct timeval now;
 545
 546                 do_gettimeofday(&now);
 547                 e->event.sequence = 0;
 548                 e->event.tv_sec = now.tv_sec;
 549                 e->event.tv_usec = now.tv_usec;
 550                 list_add_tail(&e->base.link, &e->base.file_priv->event_list);
 551                 wake_up_interruptible(&e->base.file_priv->event_wait);
 552         }
 553
 554         list_del(&s->head);
 555         if (ps)
 556                 *ps = *s;
 557         kfree(s);
 558
 559         spin_unlock_irqrestore(&dev->event_lock, flags);
 560         return 0;
 561 }
 562
 563 int
 564 nouveau_display_dumb_create(struct drm_file *file_priv, struct drm_device *dev,
 565                             struct drm_mode_create_dumb *args)
 566 {
 567         struct nouveau_bo *bo;
 568         int ret;
 569
 570         args->pitch = roundup(args->width * (args->bpp / 8), 256);
 571         args->size = args->pitch * args->height;
 572         args->size = roundup(args->size, PAGE_SIZE);
 573
 574         ret = nouveau_gem_new(dev, args->size, 0, TTM_PL_FLAG_VRAM, 0, 0, &bo);
 575         if (ret)
 576                 return ret;
 577
 578         ret = drm_gem_handle_create(file_priv, bo->gem, &args->handle);
 579         drm_gem_object_unreference_unlocked(bo->gem);
 580         return ret;
 581 }
 582
 583 int
 584 nouveau_display_dumb_destroy(struct drm_file *file_priv, struct drm_device *dev,
 585                              uint32_t handle)
 586 {
 587         return drm_gem_handle_delete(file_priv, handle);
 588 }
 589
 590 int
 591 nouveau_display_dumb_map_offset(struct drm_file *file_priv,
 592                                 struct drm_device *dev,
 593                                 uint32_t handle, uint64_t *poffset)
 594 {
 595         struct drm_gem_object *gem;
 596
 597         gem = drm_gem_object_lookup(dev, file_priv, handle);
 598         if (gem) {
 599                 struct nouveau_bo *bo = gem->driver_private;
 600                 *poffset = bo->bo.addr_space_offset;
 601                 drm_gem_object_unreference_unlocked(gem);
 602                 return 0;
 603         }
 604
 605         return -ENOENT;
 606 }