drivers/gpu/drm/nouveau/dispnv50/wndw.c

   1 /*
   2  * Copyright 2018 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  */
  22 #include "wndw.h"
  23 #include "wimm.h"
  24
  25 #include <nvif/class.h>
  26 #include <nvif/cl0002.h>
  27
  28 #include <drm/drm_atomic_helper.h>
  29 #include "nouveau_bo.h"
  30
  31 static void
  32 nv50_wndw_ctxdma_del(struct nv50_wndw_ctxdma *ctxdma)
  33 {
  34         nvif_object_fini(&ctxdma->object);
  35         list_del(&ctxdma->head);
  36         kfree(ctxdma);
  37 }
  38
  39 static struct nv50_wndw_ctxdma *
  40 nv50_wndw_ctxdma_new(struct nv50_wndw *wndw, struct nouveau_framebuffer *fb)
  41 {
  42         struct nouveau_drm *drm = nouveau_drm(fb->base.dev);
  43         struct nv50_wndw_ctxdma *ctxdma;
  44         const u8    kind = fb->nvbo->kind;
  45         const u32 handle = 0xfb000000 | kind;
  46         struct {
  47                 struct nv_dma_v0 base;
  48                 union {
  49                         struct nv50_dma_v0 nv50;
  50                         struct gf100_dma_v0 gf100;
  51                         struct gf119_dma_v0 gf119;
  52                 };
  53         } args = {};
  54         u32 argc = sizeof(args.base);
  55         int ret;
  56
  57         list_for_each_entry(ctxdma, &wndw->ctxdma.list, head) {
  58                 if (ctxdma->object.handle == handle)
  59                         return ctxdma;
  60         }
  61
  62         if (!(ctxdma = kzalloc(sizeof(*ctxdma), GFP_KERNEL)))
  63                 return ERR_PTR(-ENOMEM);
  64         list_add(&ctxdma->head, &wndw->ctxdma.list);
  65
  66         args.base.target = NV_DMA_V0_TARGET_VRAM;
  67         args.base.access = NV_DMA_V0_ACCESS_RDWR;
  68         args.base.start  = 0;
  69         args.base.limit  = drm->client.device.info.ram_user - 1;
  70
  71         if (drm->client.device.info.chipset < 0x80) {
  72                 args.nv50.part = NV50_DMA_V0_PART_256;
  73                 argc += sizeof(args.nv50);
  74         } else
  75         if (drm->client.device.info.chipset < 0xc0) {
  76                 args.nv50.part = NV50_DMA_V0_PART_256;
  77                 args.nv50.kind = kind;
  78                 argc += sizeof(args.nv50);
  79         } else
  80         if (drm->client.device.info.chipset < 0xd0) {
  81                 args.gf100.kind = kind;
  82                 argc += sizeof(args.gf100);
  83         } else {
  84                 args.gf119.page = GF119_DMA_V0_PAGE_LP;
  85                 args.gf119.kind = kind;
  86                 argc += sizeof(args.gf119);
  87         }
  88
  89         ret = nvif_object_init(wndw->ctxdma.parent, handle, NV_DMA_IN_MEMORY,
  90                                &args, argc, &ctxdma->object);
  91         if (ret) {
  92                 nv50_wndw_ctxdma_del(ctxdma);
  93                 return ERR_PTR(ret);
  94         }
  95
  96         return ctxdma;
  97 }
  98
  99 int
 100 nv50_wndw_wait_armed(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw)
 101 {
 102         struct nv50_disp *disp = nv50_disp(wndw->plane.dev);
 103         if (asyw->set.ntfy) {
 104                 return wndw->func->ntfy_wait_begun(disp->sync,
 105                                                    asyw->ntfy.offset,
 106                                                    wndw->wndw.base.device);
 107         }
 108         return 0;
 109 }
 110
 111 void
 112 nv50_wndw_flush_clr(struct nv50_wndw *wndw, u32 *interlock, bool flush,
 113                     struct nv50_wndw_atom *asyw)
 114 {
 115         union nv50_wndw_atom_mask clr = {
 116                 .mask = asyw->clr.mask & ~(flush ? 0 : asyw->set.mask),
 117         };
 118         if (clr.sema ) wndw->func-> sema_clr(wndw);
 119         if (clr.ntfy ) wndw->func-> ntfy_clr(wndw);
 120         if (clr.xlut ) wndw->func-> xlut_clr(wndw);
 121         if (clr.image) wndw->func->image_clr(wndw);
 122
 123         interlock[wndw->interlock.type] |= wndw->interlock.data;
 124 }
 125
 126 void
 127 nv50_wndw_flush_set(struct nv50_wndw *wndw, u32 *interlock,
 128                     struct nv50_wndw_atom *asyw)
 129 {
 130         if (interlock) {
 131                 asyw->image.mode = 0;
 132                 asyw->image.interval = 1;
 133         }
 134
 135         if (asyw->set.sema ) wndw->func->sema_set (wndw, asyw);
 136         if (asyw->set.ntfy ) wndw->func->ntfy_set (wndw, asyw);
 137         if (asyw->set.image) wndw->func->image_set(wndw, asyw);
 138
 139         if (asyw->set.xlut ) {
 140                 if (asyw->ilut) {
 141                         asyw->xlut.i.offset =
 142                                 nv50_lut_load(&wndw->ilut,
 143                                               asyw->xlut.i.mode <= 1,
 144                                               asyw->xlut.i.buffer,
 145                                               asyw->ilut);
 146                 }
 147                 wndw->func->xlut_set(wndw, asyw);
 148         }
 149
 150         if (asyw->set.scale) wndw->func->scale_set(wndw, asyw);
 151         if (asyw->set.point) {
 152                 if (asyw->set.point = false, asyw->set.mask)
 153                         interlock[wndw->interlock.type] |= wndw->interlock.data;
 154                 interlock[NV50_DISP_INTERLOCK_WIMM] |= wndw->interlock.data;
 155
 156                 wndw->immd->point(wndw, asyw);
 157                 wndw->immd->update(wndw, interlock);
 158         } else {
 159                 interlock[wndw->interlock.type] |= wndw->interlock.data;
 160         }
 161 }
 162
 163 void
 164 nv50_wndw_ntfy_enable(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw)
 165 {
 166         struct nv50_disp *disp = nv50_disp(wndw->plane.dev);
 167
 168         asyw->ntfy.handle = wndw->wndw.sync.handle;
 169         asyw->ntfy.offset = wndw->ntfy;
 170         asyw->ntfy.awaken = false;
 171         asyw->set.ntfy = true;
 172
 173         wndw->func->ntfy_reset(disp->sync, wndw->ntfy);
 174         wndw->ntfy ^= 0x10;
 175 }
 176
 177 static void
 178 nv50_wndw_atomic_check_release(struct nv50_wndw *wndw,
 179                                struct nv50_wndw_atom *asyw,
 180                                struct nv50_head_atom *asyh)
 181 {
 182         struct nouveau_drm *drm = nouveau_drm(wndw->plane.dev);
 183         NV_ATOMIC(drm, "%s release\n", wndw->plane.name);
 184         wndw->func->release(wndw, asyw, asyh);
 185         asyw->ntfy.handle = 0;
 186         asyw->sema.handle = 0;
 187 }
 188
 189 static int
 190 nv50_wndw_atomic_check_acquire_yuv(struct nv50_wndw_atom *asyw)
 191 {
 192         switch (asyw->state.fb->format->format) {
 193         case DRM_FORMAT_YUYV: asyw->image.format = 0x28; break;
 194         case DRM_FORMAT_UYVY: asyw->image.format = 0x29; break;
 195         default:
 196                 WARN_ON(1);
 197                 return -EINVAL;
 198         }
 199         asyw->image.colorspace = 1;
 200         return 0;
 201 }
 202
 203 static int
 204 nv50_wndw_atomic_check_acquire_rgb(struct nv50_wndw_atom *asyw)
 205 {
 206         switch (asyw->state.fb->format->format) {
 207         case DRM_FORMAT_C8         : asyw->image.format = 0x1e; break;
 208         case DRM_FORMAT_XRGB8888   :
 209         case DRM_FORMAT_ARGB8888   : asyw->image.format = 0xcf; break;
 210         case DRM_FORMAT_RGB565     : asyw->image.format = 0xe8; break;
 211         case DRM_FORMAT_XRGB1555   :
 212         case DRM_FORMAT_ARGB1555   : asyw->image.format = 0xe9; break;
 213         case DRM_FORMAT_XBGR2101010:
 214         case DRM_FORMAT_ABGR2101010: asyw->image.format = 0xd1; break;
 215         case DRM_FORMAT_XBGR8888   :
 216         case DRM_FORMAT_ABGR8888   : asyw->image.format = 0xd5; break;
 217         case DRM_FORMAT_XRGB2101010:
 218         case DRM_FORMAT_ARGB2101010: asyw->image.format = 0xdf; break;
 219         default:
 220                 return -EINVAL;
 221         }
 222         asyw->image.colorspace = 0;
 223         return 0;
 224 }
 225
 226 static int
 227 nv50_wndw_atomic_check_acquire(struct nv50_wndw *wndw, bool modeset,
 228                                struct nv50_wndw_atom *armw,
 229                                struct nv50_wndw_atom *asyw,
 230                                struct nv50_head_atom *asyh)
 231 {
 232         struct nouveau_framebuffer *fb = nouveau_framebuffer(asyw->state.fb);
 233         struct nouveau_drm *drm = nouveau_drm(wndw->plane.dev);
 234         int ret;
 235
 236         NV_ATOMIC(drm, "%s acquire\n", wndw->plane.name);
 237
 238         if (asyw->state.fb != armw->state.fb || !armw->visible || modeset) {
 239                 asyw->image.w = fb->base.width;
 240                 asyw->image.h = fb->base.height;
 241                 asyw->image.kind = fb->nvbo->kind;
 242
 243                 ret = nv50_wndw_atomic_check_acquire_rgb(asyw);
 244                 if (ret) {
 245                         ret = nv50_wndw_atomic_check_acquire_yuv(asyw);
 246                         if (ret)
 247                                 return ret;
 248                 }
 249
 250                 if (asyw->image.kind) {
 251                         asyw->image.layout = 0;
 252                         if (drm->client.device.info.chipset >= 0xc0)
 253                                 asyw->image.blockh = fb->nvbo->mode >> 4;
 254                         else
 255                                 asyw->image.blockh = fb->nvbo->mode;
 256                         asyw->image.blocks[0] = fb->base.pitches[0] / 64;
 257                         asyw->image.pitch[0] = 0;
 258                 } else {
 259                         asyw->image.layout = 1;
 260                         asyw->image.blockh = 0;
 261                         asyw->image.blocks[0] = 0;
 262                         asyw->image.pitch[0] = fb->base.pitches[0];
 263                 }
 264
 265                 if (!(asyh->state.pageflip_flags & DRM_MODE_PAGE_FLIP_ASYNC))
 266                         asyw->image.interval = 1;
 267                 else
 268                         asyw->image.interval = 0;
 269                 asyw->image.mode = asyw->image.interval ? 0 : 1;
 270                 asyw->set.image = wndw->func->image_set != NULL;
 271         }
 272
 273         if (wndw->func->scale_set) {
 274                 asyw->scale.sx = asyw->state.src_x >> 16;
 275                 asyw->scale.sy = asyw->state.src_y >> 16;
 276                 asyw->scale.sw = asyw->state.src_w >> 16;
 277                 asyw->scale.sh = asyw->state.src_h >> 16;
 278                 asyw->scale.dw = asyw->state.crtc_w;
 279                 asyw->scale.dh = asyw->state.crtc_h;
 280                 if (memcmp(&armw->scale, &asyw->scale, sizeof(asyw->scale)))
 281                         asyw->set.scale = true;
 282         }
 283
 284         if (wndw->immd) {
 285                 asyw->point.x = asyw->state.crtc_x;
 286                 asyw->point.y = asyw->state.crtc_y;
 287                 if (memcmp(&armw->point, &asyw->point, sizeof(asyw->point)))
 288                         asyw->set.point = true;
 289         }
 290
 291         return wndw->func->acquire(wndw, asyw, asyh);
 292 }
 293
 294 static void
 295 nv50_wndw_atomic_check_lut(struct nv50_wndw *wndw,
 296                            struct nv50_wndw_atom *armw,
 297                            struct nv50_wndw_atom *asyw,
 298                            struct nv50_head_atom *asyh)
 299 {
 300         struct drm_property_blob *ilut = asyh->state.degamma_lut;
 301
 302         /* I8 format without an input LUT makes no sense, and the
 303          * HW error-checks for this.
 304          *
 305          * In order to handle legacy gamma, when there's no input
 306          * LUT we need to steal the output LUT and use it instead.
 307          */
 308         if (!ilut && asyw->state.fb->format->format == DRM_FORMAT_C8) {
 309                 /* This should be an error, but there's legacy clients
 310                  * that do a modeset before providing a gamma table.
 311                  *
 312                  * We keep the window disabled to avoid angering HW.
 313                  */
 314                 if (!(ilut = asyh->state.gamma_lut)) {
 315                         asyw->visible = false;
 316                         return;
 317                 }
 318
 319                 if (wndw->func->ilut)
 320                         asyh->wndw.olut |= BIT(wndw->id);
 321         } else {
 322                 asyh->wndw.olut &= ~BIT(wndw->id);
 323         }
 324
 325         /* Recalculate LUT state. */
 326         memset(&asyw->xlut, 0x00, sizeof(asyw->xlut));
 327         if ((asyw->ilut = wndw->func->ilut ? ilut : NULL)) {
 328                 wndw->func->ilut(wndw, asyw);
 329                 asyw->xlut.handle = wndw->wndw.vram.handle;
 330                 asyw->xlut.i.buffer = !asyw->xlut.i.buffer;
 331                 asyw->set.xlut = true;
 332         }
 333
 334         /* Handle setting base SET_OUTPUT_LUT_LO_ENABLE_USE_CORE_LUT. */
 335         if (wndw->func->olut_core &&
 336             (!armw->visible || (armw->xlut.handle && !asyw->xlut.handle)))
 337                 asyw->set.xlut = true;
 338
 339         /* Can't do an immediate flip while changing the LUT. */
 340         asyh->state.pageflip_flags &= ~DRM_MODE_PAGE_FLIP_ASYNC;
 341 }
 342
 343 static int
 344 nv50_wndw_atomic_check(struct drm_plane *plane, struct drm_plane_state *state)
 345 {
 346         struct nouveau_drm *drm = nouveau_drm(plane->dev);
 347         struct nv50_wndw *wndw = nv50_wndw(plane);
 348         struct nv50_wndw_atom *armw = nv50_wndw_atom(wndw->plane.state);
 349         struct nv50_wndw_atom *asyw = nv50_wndw_atom(state);
 350         struct nv50_head_atom *harm = NULL, *asyh = NULL;
 351         bool modeset = false;
 352         int ret;
 353
 354         NV_ATOMIC(drm, "%s atomic_check\n", plane->name);
 355
 356         /* Fetch the assembly state for the head the window will belong to,
 357          * and determine whether the window will be visible.
 358          */
 359         if (asyw->state.crtc) {
 360                 asyh = nv50_head_atom_get(asyw->state.state, asyw->state.crtc);
 361                 if (IS_ERR(asyh))
 362                         return PTR_ERR(asyh);
 363                 modeset = drm_atomic_crtc_needs_modeset(&asyh->state);
 364                 asyw->visible = asyh->state.active;
 365         } else {
 366                 asyw->visible = false;
 367         }
 368
 369         /* Fetch assembly state for the head the window used to belong to. */
 370         if (armw->state.crtc) {
 371                 harm = nv50_head_atom_get(asyw->state.state, armw->state.crtc);
 372                 if (IS_ERR(harm))
 373                         return PTR_ERR(harm);
 374         }
 375
 376         /* LUT configuration can potentially cause the window to be disabled. */
 377         if (asyw->visible && wndw->func->xlut_set &&
 378             (!armw->visible ||
 379              asyh->state.color_mgmt_changed ||
 380              asyw->state.fb->format->format !=
 381              armw->state.fb->format->format))
 382                 nv50_wndw_atomic_check_lut(wndw, armw, asyw, asyh);
 383
 384         /* Calculate new window state. */
 385         if (asyw->visible) {
 386                 ret = nv50_wndw_atomic_check_acquire(wndw, modeset,
 387                                                      armw, asyw, asyh);
 388                 if (ret)
 389                         return ret;
 390
 391                 asyh->wndw.mask |= BIT(wndw->id);
 392         } else
 393         if (armw->visible) {
 394                 nv50_wndw_atomic_check_release(wndw, asyw, harm);
 395                 harm->wndw.mask &= ~BIT(wndw->id);
 396         } else {
 397                 return 0;
 398         }
 399
 400         /* Aside from the obvious case where the window is actively being
 401          * disabled, we might also need to temporarily disable the window
 402          * when performing certain modeset operations.
 403          */
 404         if (!asyw->visible || modeset) {
 405                 asyw->clr.ntfy = armw->ntfy.handle != 0;
 406                 asyw->clr.sema = armw->sema.handle != 0;
 407                 asyw->clr.xlut = armw->xlut.handle != 0;
 408                 if (wndw->func->image_clr)
 409                         asyw->clr.image = armw->image.handle[0] != 0;
 410         }
 411
 412         return 0;
 413 }
 414
 415 static void
 416 nv50_wndw_cleanup_fb(struct drm_plane *plane, struct drm_plane_state *old_state)
 417 {
 418         struct nouveau_framebuffer *fb = nouveau_framebuffer(old_state->fb);
 419         struct nouveau_drm *drm = nouveau_drm(plane->dev);
 420
 421         NV_ATOMIC(drm, "%s cleanup: %p\n", plane->name, old_state->fb);
 422         if (!old_state->fb)
 423                 return;
 424
 425         nouveau_bo_unpin(fb->nvbo);
 426 }
 427
 428 static int
 429 nv50_wndw_prepare_fb(struct drm_plane *plane, struct drm_plane_state *state)
 430 {
 431         struct nouveau_framebuffer *fb = nouveau_framebuffer(state->fb);
 432         struct nouveau_drm *drm = nouveau_drm(plane->dev);
 433         struct nv50_wndw *wndw = nv50_wndw(plane);
 434         struct nv50_wndw_atom *asyw = nv50_wndw_atom(state);
 435         struct nv50_head_atom *asyh;
 436         struct nv50_wndw_ctxdma *ctxdma;
 437         int ret;
 438
 439         NV_ATOMIC(drm, "%s prepare: %p\n", plane->name, state->fb);
 440         if (!asyw->state.fb)
 441                 return 0;
 442
 443         ret = nouveau_bo_pin(fb->nvbo, TTM_PL_FLAG_VRAM, true);
 444         if (ret)
 445                 return ret;
 446
 447         if (wndw->ctxdma.parent) {
 448                 ctxdma = nv50_wndw_ctxdma_new(wndw, fb);
 449                 if (IS_ERR(ctxdma)) {
 450                         nouveau_bo_unpin(fb->nvbo);
 451                         return PTR_ERR(ctxdma);
 452                 }
 453
 454                 asyw->image.handle[0] = ctxdma->object.handle;
 455         }
 456
 457         asyw->state.fence = reservation_object_get_excl_rcu(fb->nvbo->bo.resv);
 458         asyw->image.offset[0] = fb->nvbo->bo.offset;
 459
 460         if (wndw->func->prepare) {
 461                 asyh = nv50_head_atom_get(asyw->state.state, asyw->state.crtc);
 462                 if (IS_ERR(asyh))
 463                         return PTR_ERR(asyh);
 464
 465                 wndw->func->prepare(wndw, asyh, asyw);
 466         }
 467
 468         return 0;
 469 }
 470
 471 static const struct drm_plane_helper_funcs
 472 nv50_wndw_helper = {
 473         .prepare_fb = nv50_wndw_prepare_fb,
 474         .cleanup_fb = nv50_wndw_cleanup_fb,
 475         .atomic_check = nv50_wndw_atomic_check,
 476 };
 477
 478 static void
 479 nv50_wndw_atomic_destroy_state(struct drm_plane *plane,
 480                                struct drm_plane_state *state)
 481 {
 482         struct nv50_wndw_atom *asyw = nv50_wndw_atom(state);
 483         __drm_atomic_helper_plane_destroy_state(&asyw->state);
 484         kfree(asyw);
 485 }
 486
 487 static struct drm_plane_state *
 488 nv50_wndw_atomic_duplicate_state(struct drm_plane *plane)
 489 {
 490         struct nv50_wndw_atom *armw = nv50_wndw_atom(plane->state);
 491         struct nv50_wndw_atom *asyw;
 492         if (!(asyw = kmalloc(sizeof(*asyw), GFP_KERNEL)))
 493                 return NULL;
 494         __drm_atomic_helper_plane_duplicate_state(plane, &asyw->state);
 495         asyw->sema = armw->sema;
 496         asyw->ntfy = armw->ntfy;
 497         asyw->ilut = NULL;
 498         asyw->xlut = armw->xlut;
 499         asyw->image = armw->image;
 500         asyw->point = armw->point;
 501         asyw->clr.mask = 0;
 502         asyw->set.mask = 0;
 503         return &asyw->state;
 504 }
 505
 506 static void
 507 nv50_wndw_reset(struct drm_plane *plane)
 508 {
 509         struct nv50_wndw_atom *asyw;
 510
 511         if (WARN_ON(!(asyw = kzalloc(sizeof(*asyw), GFP_KERNEL))))
 512                 return;
 513
 514         if (plane->state)
 515                 plane->funcs->atomic_destroy_state(plane, plane->state);
 516         plane->state = &asyw->state;
 517         plane->state->plane = plane;
 518         plane->state->rotation = DRM_MODE_ROTATE_0;
 519 }
 520
 521 static void
 522 nv50_wndw_destroy(struct drm_plane *plane)
 523 {
 524         struct nv50_wndw *wndw = nv50_wndw(plane);
 525         struct nv50_wndw_ctxdma *ctxdma, *ctxtmp;
 526
 527         list_for_each_entry_safe(ctxdma, ctxtmp, &wndw->ctxdma.list, head) {
 528                 nv50_wndw_ctxdma_del(ctxdma);
 529         }
 530
 531         nvif_notify_fini(&wndw->notify);
 532         nv50_dmac_destroy(&wndw->wimm);
 533         nv50_dmac_destroy(&wndw->wndw);
 534
 535         nv50_lut_fini(&wndw->ilut);
 536
 537         drm_plane_cleanup(&wndw->plane);
 538         kfree(wndw);
 539 }
 540
 541 const struct drm_plane_funcs
 542 nv50_wndw = {
 543         .update_plane = drm_atomic_helper_update_plane,
 544         .disable_plane = drm_atomic_helper_disable_plane,
 545         .destroy = nv50_wndw_destroy,
 546         .reset = nv50_wndw_reset,
 547         .atomic_duplicate_state = nv50_wndw_atomic_duplicate_state,
 548         .atomic_destroy_state = nv50_wndw_atomic_destroy_state,
 549 };
 550
 551 static int
 552 nv50_wndw_notify(struct nvif_notify *notify)
 553 {
 554         return NVIF_NOTIFY_KEEP;
 555 }
 556
 557 void
 558 nv50_wndw_fini(struct nv50_wndw *wndw)
 559 {
 560         nvif_notify_put(&wndw->notify);
 561 }
 562
 563 void
 564 nv50_wndw_init(struct nv50_wndw *wndw)
 565 {
 566         nvif_notify_get(&wndw->notify);
 567 }
 568
 569 int
 570 nv50_wndw_new_(const struct nv50_wndw_func *func, struct drm_device *dev,
 571                enum drm_plane_type type, const char *name, int index,
 572                const u32 *format, u32 heads,
 573                enum nv50_disp_interlock_type interlock_type, u32 interlock_data,
 574                struct nv50_wndw **pwndw)
 575 {
 576         struct nouveau_drm *drm = nouveau_drm(dev);
 577         struct nvif_mmu *mmu = &drm->client.mmu;
 578         struct nv50_disp *disp = nv50_disp(dev);
 579         struct nv50_wndw *wndw;
 580         int nformat;
 581         int ret;
 582
 583         if (!(wndw = *pwndw = kzalloc(sizeof(*wndw), GFP_KERNEL)))
 584                 return -ENOMEM;
 585         wndw->func = func;
 586         wndw->id = index;
 587         wndw->interlock.type = interlock_type;
 588         wndw->interlock.data = interlock_data;
 589
 590         wndw->ctxdma.parent = &wndw->wndw.base.user;
 591         INIT_LIST_HEAD(&wndw->ctxdma.list);
 592
 593         for (nformat = 0; format[nformat]; nformat++);
 594
 595         ret = drm_universal_plane_init(dev, &wndw->plane, heads, &nv50_wndw,
 596                                        format, nformat, NULL,
 597                                        type, "%s-%d", name, index);
 598         if (ret) {
 599                 kfree(*pwndw);
 600                 *pwndw = NULL;
 601                 return ret;
 602         }
 603
 604         drm_plane_helper_add(&wndw->plane, &nv50_wndw_helper);
 605
 606         if (wndw->func->ilut) {
 607                 ret = nv50_lut_init(disp, mmu, &wndw->ilut);
 608                 if (ret)
 609                         return ret;
 610         }
 611
 612         wndw->notify.func = nv50_wndw_notify;
 613         return 0;
 614 }
 615
 616 int
 617 nv50_wndw_new(struct nouveau_drm *drm, enum drm_plane_type type, int index,
 618               struct nv50_wndw **pwndw)
 619 {
 620         struct {
 621                 s32 oclass;
 622                 int version;
 623                 int (*new)(struct nouveau_drm *, enum drm_plane_type,
 624                            int, s32, struct nv50_wndw **);
 625         } wndws[] = {
 626                 { GV100_DISP_WINDOW_CHANNEL_DMA, 0, wndwc37e_new },
 627                 {}
 628         };
 629         struct nv50_disp *disp = nv50_disp(drm->dev);
 630         int cid, ret;
 631
 632         cid = nvif_mclass(&disp->disp->object, wndws);
 633         if (cid < 0) {
 634                 NV_ERROR(drm, "No supported window class\n");
 635                 return cid;
 636         }
 637
 638         ret = wndws[cid].new(drm, type, index, wndws[cid].oclass, pwndw);
 639         if (ret)
 640                 return ret;
 641
 642         return nv50_wimm_init(drm, *pwndw);
 643 }