linux/drivers/gpu/drm/nouveau/dispnv50/wndw.c
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   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
  31static void
  32nv50_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
  39static struct nv50_wndw_ctxdma *
  40nv50_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
  99int
 100nv50_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
 111void
 112nv50_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
 126void
 127nv50_wndw_flush_set(struct nv50_wndw *wndw, u32 *interlock,
 128                    struct nv50_wndw_atom *asyw)
 129{
 130        if (interlock[NV50_DISP_INTERLOCK_CORE]) {
 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, asyw->xlut.i.buffer,
 143                                              asyw->ilut, asyw->xlut.i.load);
 144                }
 145                wndw->func->xlut_set(wndw, asyw);
 146        }
 147
 148        if (asyw->set.scale) wndw->func->scale_set(wndw, asyw);
 149        if (asyw->set.point) {
 150                if (asyw->set.point = false, asyw->set.mask)
 151                        interlock[wndw->interlock.type] |= wndw->interlock.data;
 152                interlock[NV50_DISP_INTERLOCK_WIMM] |= wndw->interlock.wimm;
 153
 154                wndw->immd->point(wndw, asyw);
 155                wndw->immd->update(wndw, interlock);
 156        } else {
 157                interlock[wndw->interlock.type] |= wndw->interlock.data;
 158        }
 159}
 160
 161void
 162nv50_wndw_ntfy_enable(struct nv50_wndw *wndw, struct nv50_wndw_atom *asyw)
 163{
 164        struct nv50_disp *disp = nv50_disp(wndw->plane.dev);
 165
 166        asyw->ntfy.handle = wndw->wndw.sync.handle;
 167        asyw->ntfy.offset = wndw->ntfy;
 168        asyw->ntfy.awaken = false;
 169        asyw->set.ntfy = true;
 170
 171        wndw->func->ntfy_reset(disp->sync, wndw->ntfy);
 172        wndw->ntfy ^= 0x10;
 173}
 174
 175static void
 176nv50_wndw_atomic_check_release(struct nv50_wndw *wndw,
 177                               struct nv50_wndw_atom *asyw,
 178                               struct nv50_head_atom *asyh)
 179{
 180        struct nouveau_drm *drm = nouveau_drm(wndw->plane.dev);
 181        NV_ATOMIC(drm, "%s release\n", wndw->plane.name);
 182        wndw->func->release(wndw, asyw, asyh);
 183        asyw->ntfy.handle = 0;
 184        asyw->sema.handle = 0;
 185}
 186
 187static int
 188nv50_wndw_atomic_check_acquire_yuv(struct nv50_wndw_atom *asyw)
 189{
 190        switch (asyw->state.fb->format->format) {
 191        case DRM_FORMAT_YUYV: asyw->image.format = 0x28; break;
 192        case DRM_FORMAT_UYVY: asyw->image.format = 0x29; break;
 193        default:
 194                WARN_ON(1);
 195                return -EINVAL;
 196        }
 197        asyw->image.colorspace = 1;
 198        return 0;
 199}
 200
 201static int
 202nv50_wndw_atomic_check_acquire_rgb(struct nv50_wndw_atom *asyw)
 203{
 204        switch (asyw->state.fb->format->format) {
 205        case DRM_FORMAT_C8         : asyw->image.format = 0x1e; break;
 206        case DRM_FORMAT_XRGB8888   :
 207        case DRM_FORMAT_ARGB8888   : asyw->image.format = 0xcf; break;
 208        case DRM_FORMAT_RGB565     : asyw->image.format = 0xe8; break;
 209        case DRM_FORMAT_XRGB1555   :
 210        case DRM_FORMAT_ARGB1555   : asyw->image.format = 0xe9; break;
 211        case DRM_FORMAT_XBGR2101010:
 212        case DRM_FORMAT_ABGR2101010: asyw->image.format = 0xd1; break;
 213        case DRM_FORMAT_XBGR8888   :
 214        case DRM_FORMAT_ABGR8888   : asyw->image.format = 0xd5; break;
 215        case DRM_FORMAT_XRGB2101010:
 216        case DRM_FORMAT_ARGB2101010: asyw->image.format = 0xdf; break;
 217        default:
 218                return -EINVAL;
 219        }
 220        asyw->image.colorspace = 0;
 221        return 0;
 222}
 223
 224static int
 225nv50_wndw_atomic_check_acquire(struct nv50_wndw *wndw, bool modeset,
 226                               struct nv50_wndw_atom *armw,
 227                               struct nv50_wndw_atom *asyw,
 228                               struct nv50_head_atom *asyh)
 229{
 230        struct nouveau_framebuffer *fb = nouveau_framebuffer(asyw->state.fb);
 231        struct nouveau_drm *drm = nouveau_drm(wndw->plane.dev);
 232        int ret;
 233
 234        NV_ATOMIC(drm, "%s acquire\n", wndw->plane.name);
 235
 236        if (asyw->state.fb != armw->state.fb || !armw->visible || modeset) {
 237                asyw->image.w = fb->base.width;
 238                asyw->image.h = fb->base.height;
 239                asyw->image.kind = fb->nvbo->kind;
 240
 241                ret = nv50_wndw_atomic_check_acquire_rgb(asyw);
 242                if (ret) {
 243                        ret = nv50_wndw_atomic_check_acquire_yuv(asyw);
 244                        if (ret)
 245                                return ret;
 246                }
 247
 248                if (asyw->image.kind) {
 249                        asyw->image.layout = 0;
 250                        if (drm->client.device.info.chipset >= 0xc0)
 251                                asyw->image.blockh = fb->nvbo->mode >> 4;
 252                        else
 253                                asyw->image.blockh = fb->nvbo->mode;
 254                        asyw->image.blocks[0] = fb->base.pitches[0] / 64;
 255                        asyw->image.pitch[0] = 0;
 256                } else {
 257                        asyw->image.layout = 1;
 258                        asyw->image.blockh = 0;
 259                        asyw->image.blocks[0] = 0;
 260                        asyw->image.pitch[0] = fb->base.pitches[0];
 261                }
 262
 263                if (!(asyh->state.pageflip_flags & DRM_MODE_PAGE_FLIP_ASYNC))
 264                        asyw->image.interval = 1;
 265                else
 266                        asyw->image.interval = 0;
 267                asyw->image.mode = asyw->image.interval ? 0 : 1;
 268                asyw->set.image = wndw->func->image_set != NULL;
 269        }
 270
 271        if (wndw->func->scale_set) {
 272                asyw->scale.sx = asyw->state.src_x >> 16;
 273                asyw->scale.sy = asyw->state.src_y >> 16;
 274                asyw->scale.sw = asyw->state.src_w >> 16;
 275                asyw->scale.sh = asyw->state.src_h >> 16;
 276                asyw->scale.dw = asyw->state.crtc_w;
 277                asyw->scale.dh = asyw->state.crtc_h;
 278                if (memcmp(&armw->scale, &asyw->scale, sizeof(asyw->scale)))
 279                        asyw->set.scale = true;
 280        }
 281
 282        if (wndw->immd) {
 283                asyw->point.x = asyw->state.crtc_x;
 284                asyw->point.y = asyw->state.crtc_y;
 285                if (memcmp(&armw->point, &asyw->point, sizeof(asyw->point)))
 286                        asyw->set.point = true;
 287        }
 288
 289        return wndw->func->acquire(wndw, asyw, asyh);
 290}
 291
 292static void
 293nv50_wndw_atomic_check_lut(struct nv50_wndw *wndw,
 294                           struct nv50_wndw_atom *armw,
 295                           struct nv50_wndw_atom *asyw,
 296                           struct nv50_head_atom *asyh)
 297{
 298        struct drm_property_blob *ilut = asyh->state.degamma_lut;
 299
 300        /* I8 format without an input LUT makes no sense, and the
 301         * HW error-checks for this.
 302         *
 303         * In order to handle legacy gamma, when there's no input
 304         * LUT we need to steal the output LUT and use it instead.
 305         */
 306        if (!ilut && asyw->state.fb->format->format == DRM_FORMAT_C8) {
 307                /* This should be an error, but there's legacy clients
 308                 * that do a modeset before providing a gamma table.
 309                 *
 310                 * We keep the window disabled to avoid angering HW.
 311                 */
 312                if (!(ilut = asyh->state.gamma_lut)) {
 313                        asyw->visible = false;
 314                        return;
 315                }
 316
 317                if (wndw->func->ilut)
 318                        asyh->wndw.olut |= BIT(wndw->id);
 319        } else {
 320                asyh->wndw.olut &= ~BIT(wndw->id);
 321        }
 322
 323        if (!ilut && wndw->func->ilut_identity) {
 324                static struct drm_property_blob dummy = {};
 325                ilut = &dummy;
 326        }
 327
 328        /* Recalculate LUT state. */
 329        memset(&asyw->xlut, 0x00, sizeof(asyw->xlut));
 330        if ((asyw->ilut = wndw->func->ilut ? ilut : NULL)) {
 331                wndw->func->ilut(wndw, asyw);
 332                asyw->xlut.handle = wndw->wndw.vram.handle;
 333                asyw->xlut.i.buffer = !asyw->xlut.i.buffer;
 334                asyw->set.xlut = true;
 335        }
 336
 337        /* Handle setting base SET_OUTPUT_LUT_LO_ENABLE_USE_CORE_LUT. */
 338        if (wndw->func->olut_core &&
 339            (!armw->visible || (armw->xlut.handle && !asyw->xlut.handle)))
 340                asyw->set.xlut = true;
 341
 342        /* Can't do an immediate flip while changing the LUT. */
 343        asyh->state.pageflip_flags &= ~DRM_MODE_PAGE_FLIP_ASYNC;
 344}
 345
 346static int
 347nv50_wndw_atomic_check(struct drm_plane *plane, struct drm_plane_state *state)
 348{
 349        struct nouveau_drm *drm = nouveau_drm(plane->dev);
 350        struct nv50_wndw *wndw = nv50_wndw(plane);
 351        struct nv50_wndw_atom *armw = nv50_wndw_atom(wndw->plane.state);
 352        struct nv50_wndw_atom *asyw = nv50_wndw_atom(state);
 353        struct nv50_head_atom *harm = NULL, *asyh = NULL;
 354        bool modeset = false;
 355        int ret;
 356
 357        NV_ATOMIC(drm, "%s atomic_check\n", plane->name);
 358
 359        /* Fetch the assembly state for the head the window will belong to,
 360         * and determine whether the window will be visible.
 361         */
 362        if (asyw->state.crtc) {
 363                asyh = nv50_head_atom_get(asyw->state.state, asyw->state.crtc);
 364                if (IS_ERR(asyh))
 365                        return PTR_ERR(asyh);
 366                modeset = drm_atomic_crtc_needs_modeset(&asyh->state);
 367                asyw->visible = asyh->state.active;
 368        } else {
 369                asyw->visible = false;
 370        }
 371
 372        /* Fetch assembly state for the head the window used to belong to. */
 373        if (armw->state.crtc) {
 374                harm = nv50_head_atom_get(asyw->state.state, armw->state.crtc);
 375                if (IS_ERR(harm))
 376                        return PTR_ERR(harm);
 377        }
 378
 379        /* LUT configuration can potentially cause the window to be disabled. */
 380        if (asyw->visible && wndw->func->xlut_set &&
 381            (!armw->visible ||
 382             asyh->state.color_mgmt_changed ||
 383             asyw->state.fb->format->format !=
 384             armw->state.fb->format->format))
 385                nv50_wndw_atomic_check_lut(wndw, armw, asyw, asyh);
 386
 387        /* Calculate new window state. */
 388        if (asyw->visible) {
 389                ret = nv50_wndw_atomic_check_acquire(wndw, modeset,
 390                                                     armw, asyw, asyh);
 391                if (ret)
 392                        return ret;
 393
 394                asyh->wndw.mask |= BIT(wndw->id);
 395        } else
 396        if (armw->visible) {
 397                nv50_wndw_atomic_check_release(wndw, asyw, harm);
 398                harm->wndw.mask &= ~BIT(wndw->id);
 399        } else {
 400                return 0;
 401        }
 402
 403        /* Aside from the obvious case where the window is actively being
 404         * disabled, we might also need to temporarily disable the window
 405         * when performing certain modeset operations.
 406         */
 407        if (!asyw->visible || modeset) {
 408                asyw->clr.ntfy = armw->ntfy.handle != 0;
 409                asyw->clr.sema = armw->sema.handle != 0;
 410                asyw->clr.xlut = armw->xlut.handle != 0;
 411                if (wndw->func->image_clr)
 412                        asyw->clr.image = armw->image.handle[0] != 0;
 413        }
 414
 415        return 0;
 416}
 417
 418static void
 419nv50_wndw_cleanup_fb(struct drm_plane *plane, struct drm_plane_state *old_state)
 420{
 421        struct nouveau_framebuffer *fb = nouveau_framebuffer(old_state->fb);
 422        struct nouveau_drm *drm = nouveau_drm(plane->dev);
 423
 424        NV_ATOMIC(drm, "%s cleanup: %p\n", plane->name, old_state->fb);
 425        if (!old_state->fb)
 426                return;
 427
 428        nouveau_bo_unpin(fb->nvbo);
 429}
 430
 431static int
 432nv50_wndw_prepare_fb(struct drm_plane *plane, struct drm_plane_state *state)
 433{
 434        struct nouveau_framebuffer *fb = nouveau_framebuffer(state->fb);
 435        struct nouveau_drm *drm = nouveau_drm(plane->dev);
 436        struct nv50_wndw *wndw = nv50_wndw(plane);
 437        struct nv50_wndw_atom *asyw = nv50_wndw_atom(state);
 438        struct nv50_head_atom *asyh;
 439        struct nv50_wndw_ctxdma *ctxdma;
 440        int ret;
 441
 442        NV_ATOMIC(drm, "%s prepare: %p\n", plane->name, state->fb);
 443        if (!asyw->state.fb)
 444                return 0;
 445
 446        ret = nouveau_bo_pin(fb->nvbo, TTM_PL_FLAG_VRAM, true);
 447        if (ret)
 448                return ret;
 449
 450        if (wndw->ctxdma.parent) {
 451                ctxdma = nv50_wndw_ctxdma_new(wndw, fb);
 452                if (IS_ERR(ctxdma)) {
 453                        nouveau_bo_unpin(fb->nvbo);
 454                        return PTR_ERR(ctxdma);
 455                }
 456
 457                asyw->image.handle[0] = ctxdma->object.handle;
 458        }
 459
 460        asyw->state.fence = reservation_object_get_excl_rcu(fb->nvbo->bo.resv);
 461        asyw->image.offset[0] = fb->nvbo->bo.offset;
 462
 463        if (wndw->func->prepare) {
 464                asyh = nv50_head_atom_get(asyw->state.state, asyw->state.crtc);
 465                if (IS_ERR(asyh))
 466                        return PTR_ERR(asyh);
 467
 468                wndw->func->prepare(wndw, asyh, asyw);
 469        }
 470
 471        return 0;
 472}
 473
 474static const struct drm_plane_helper_funcs
 475nv50_wndw_helper = {
 476        .prepare_fb = nv50_wndw_prepare_fb,
 477        .cleanup_fb = nv50_wndw_cleanup_fb,
 478        .atomic_check = nv50_wndw_atomic_check,
 479};
 480
 481static void
 482nv50_wndw_atomic_destroy_state(struct drm_plane *plane,
 483                               struct drm_plane_state *state)
 484{
 485        struct nv50_wndw_atom *asyw = nv50_wndw_atom(state);
 486        __drm_atomic_helper_plane_destroy_state(&asyw->state);
 487        kfree(asyw);
 488}
 489
 490static struct drm_plane_state *
 491nv50_wndw_atomic_duplicate_state(struct drm_plane *plane)
 492{
 493        struct nv50_wndw_atom *armw = nv50_wndw_atom(plane->state);
 494        struct nv50_wndw_atom *asyw;
 495        if (!(asyw = kmalloc(sizeof(*asyw), GFP_KERNEL)))
 496                return NULL;
 497        __drm_atomic_helper_plane_duplicate_state(plane, &asyw->state);
 498        asyw->sema = armw->sema;
 499        asyw->ntfy = armw->ntfy;
 500        asyw->ilut = NULL;
 501        asyw->xlut = armw->xlut;
 502        asyw->image = armw->image;
 503        asyw->point = armw->point;
 504        asyw->clr.mask = 0;
 505        asyw->set.mask = 0;
 506        return &asyw->state;
 507}
 508
 509static void
 510nv50_wndw_reset(struct drm_plane *plane)
 511{
 512        struct nv50_wndw_atom *asyw;
 513
 514        if (WARN_ON(!(asyw = kzalloc(sizeof(*asyw), GFP_KERNEL))))
 515                return;
 516
 517        if (plane->state)
 518                plane->funcs->atomic_destroy_state(plane, plane->state);
 519        plane->state = &asyw->state;
 520        plane->state->plane = plane;
 521        plane->state->rotation = DRM_MODE_ROTATE_0;
 522}
 523
 524static void
 525nv50_wndw_destroy(struct drm_plane *plane)
 526{
 527        struct nv50_wndw *wndw = nv50_wndw(plane);
 528        struct nv50_wndw_ctxdma *ctxdma, *ctxtmp;
 529
 530        list_for_each_entry_safe(ctxdma, ctxtmp, &wndw->ctxdma.list, head) {
 531                nv50_wndw_ctxdma_del(ctxdma);
 532        }
 533
 534        nvif_notify_fini(&wndw->notify);
 535        nv50_dmac_destroy(&wndw->wimm);
 536        nv50_dmac_destroy(&wndw->wndw);
 537
 538        nv50_lut_fini(&wndw->ilut);
 539
 540        drm_plane_cleanup(&wndw->plane);
 541        kfree(wndw);
 542}
 543
 544const struct drm_plane_funcs
 545nv50_wndw = {
 546        .update_plane = drm_atomic_helper_update_plane,
 547        .disable_plane = drm_atomic_helper_disable_plane,
 548        .destroy = nv50_wndw_destroy,
 549        .reset = nv50_wndw_reset,
 550        .atomic_duplicate_state = nv50_wndw_atomic_duplicate_state,
 551        .atomic_destroy_state = nv50_wndw_atomic_destroy_state,
 552};
 553
 554static int
 555nv50_wndw_notify(struct nvif_notify *notify)
 556{
 557        return NVIF_NOTIFY_KEEP;
 558}
 559
 560void
 561nv50_wndw_fini(struct nv50_wndw *wndw)
 562{
 563        nvif_notify_put(&wndw->notify);
 564}
 565
 566void
 567nv50_wndw_init(struct nv50_wndw *wndw)
 568{
 569        nvif_notify_get(&wndw->notify);
 570}
 571
 572int
 573nv50_wndw_new_(const struct nv50_wndw_func *func, struct drm_device *dev,
 574               enum drm_plane_type type, const char *name, int index,
 575               const u32 *format, u32 heads,
 576               enum nv50_disp_interlock_type interlock_type, u32 interlock_data,
 577               struct nv50_wndw **pwndw)
 578{
 579        struct nouveau_drm *drm = nouveau_drm(dev);
 580        struct nvif_mmu *mmu = &drm->client.mmu;
 581        struct nv50_disp *disp = nv50_disp(dev);
 582        struct nv50_wndw *wndw;
 583        int nformat;
 584        int ret;
 585
 586        if (!(wndw = *pwndw = kzalloc(sizeof(*wndw), GFP_KERNEL)))
 587                return -ENOMEM;
 588        wndw->func = func;
 589        wndw->id = index;
 590        wndw->interlock.type = interlock_type;
 591        wndw->interlock.data = interlock_data;
 592
 593        wndw->ctxdma.parent = &wndw->wndw.base.user;
 594        INIT_LIST_HEAD(&wndw->ctxdma.list);
 595
 596        for (nformat = 0; format[nformat]; nformat++);
 597
 598        ret = drm_universal_plane_init(dev, &wndw->plane, heads, &nv50_wndw,
 599                                       format, nformat, NULL,
 600                                       type, "%s-%d", name, index);
 601        if (ret) {
 602                kfree(*pwndw);
 603                *pwndw = NULL;
 604                return ret;
 605        }
 606
 607        drm_plane_helper_add(&wndw->plane, &nv50_wndw_helper);
 608
 609        if (wndw->func->ilut) {
 610                ret = nv50_lut_init(disp, mmu, &wndw->ilut);
 611                if (ret)
 612                        return ret;
 613        }
 614
 615        wndw->notify.func = nv50_wndw_notify;
 616        return 0;
 617}
 618
 619int
 620nv50_wndw_new(struct nouveau_drm *drm, enum drm_plane_type type, int index,
 621              struct nv50_wndw **pwndw)
 622{
 623        struct {
 624                s32 oclass;
 625                int version;
 626                int (*new)(struct nouveau_drm *, enum drm_plane_type,
 627                           int, s32, struct nv50_wndw **);
 628        } wndws[] = {
 629                { TU102_DISP_WINDOW_CHANNEL_DMA, 0, wndwc57e_new },
 630                { GV100_DISP_WINDOW_CHANNEL_DMA, 0, wndwc37e_new },
 631                {}
 632        };
 633        struct nv50_disp *disp = nv50_disp(drm->dev);
 634        int cid, ret;
 635
 636        cid = nvif_mclass(&disp->disp->object, wndws);
 637        if (cid < 0) {
 638                NV_ERROR(drm, "No supported window class\n");
 639                return cid;
 640        }
 641
 642        ret = wndws[cid].new(drm, type, index, wndws[cid].oclass, pwndw);
 643        if (ret)
 644                return ret;
 645
 646        return nv50_wimm_init(drm, *pwndw);
 647}
 648