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