src/gallium/drivers/panfrost/pan_resource.c

   1 /*
   2  * Copyright (C) 2008 VMware, Inc.
   3  * Copyright (C) 2014 Broadcom
   4  * Copyright (C) 2018-2019 Alyssa Rosenzweig
   5  * Copyright (C) 2019 Collabora
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the next
  15  * paragraph) shall be included in all copies or substantial portions of the
  16  * Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  24  * SOFTWARE.
  25  *
  26  * Authors (Collabora):
  27  *   Tomeu Vizoso <tomeu.vizoso@collabora.com>
  28  *   Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
  29  *
  30  */
  31
  32 #include <xf86drm.h>
  33 #include <fcntl.h>
  34 #include "drm-uapi/drm_fourcc.h"
  35
  36 #include "state_tracker/winsys_handle.h"
  37 #include "util/u_format.h"
  38 #include "util/u_memory.h"
  39 #include "util/u_surface.h"
  40 #include "util/u_transfer.h"
  41 #include "util/u_transfer_helper.h"
  42
  43 #include "pan_context.h"
  44 #include "pan_screen.h"
  45 #include "pan_resource.h"
  46 #include "pan_swizzle.h"
  47 #include "pan_util.h"
  48
  49 static struct pipe_resource *
  50 panfrost_resource_from_handle(struct pipe_screen *pscreen,
  51                               const struct pipe_resource *templat,
  52                               struct winsys_handle *whandle,
  53                               unsigned usage)
  54 {
  55         struct panfrost_screen *screen = pan_screen(pscreen);
  56         struct panfrost_resource *rsc;
  57         struct pipe_resource *prsc;
  58
  59         assert(whandle->type == WINSYS_HANDLE_TYPE_FD);
  60
  61         rsc = CALLOC_STRUCT(panfrost_resource);
  62         if (!rsc)
  63                 return NULL;
  64
  65         prsc = &rsc->base;
  66
  67         *prsc = *templat;
  68
  69         pipe_reference_init(&prsc->reference, 1);
  70         prsc->screen = pscreen;
  71
  72         rsc->bo = screen->driver->import_bo(screen, whandle);
  73         rsc->bo->slices[0].stride = whandle->stride;
  74
  75         if (screen->ro) {
  76                 rsc->scanout =
  77                         renderonly_create_gpu_import_for_resource(prsc, screen->ro, NULL);
  78                 /* failure is expected in some cases.. */
  79         }
  80
  81         return prsc;
  82 }
  83
  84 static boolean
  85 panfrost_resource_get_handle(struct pipe_screen *pscreen,
  86                              struct pipe_context *ctx,
  87                              struct pipe_resource *pt,
  88                              struct winsys_handle *handle,
  89                              unsigned usage)
  90 {
  91         struct panfrost_screen *screen = pan_screen(pscreen);
  92         struct panfrost_resource *rsrc = (struct panfrost_resource *) pt;
  93         struct renderonly_scanout *scanout = rsrc->scanout;
  94
  95         handle->modifier = DRM_FORMAT_MOD_INVALID;
  96
  97         if (handle->type == WINSYS_HANDLE_TYPE_SHARED) {
  98                 return FALSE;
  99         } else if (handle->type == WINSYS_HANDLE_TYPE_KMS) {
 100                 if (renderonly_get_handle(scanout, handle))
 101                         return TRUE;
 102
 103                 handle->handle = rsrc->bo->gem_handle;
 104                 handle->stride = rsrc->bo->slices[0].stride;
 105                 return TRUE;
 106         } else if (handle->type == WINSYS_HANDLE_TYPE_FD) {
 107                 if (scanout) {
 108                         struct drm_prime_handle args = {
 109                                 .handle = scanout->handle,
 110                                 .flags = DRM_CLOEXEC,
 111                         };
 112
 113                         int ret = drmIoctl(screen->ro->kms_fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &args);
 114                         if (ret == -1)
 115                                 return FALSE;
 116
 117                         handle->stride = scanout->stride;
 118                         handle->handle = args.fd;
 119
 120                         return TRUE;
 121                 } else
 122                         return screen->driver->export_bo(screen, rsrc->bo->gem_handle, rsrc->bo->slices[0].stride, handle);
 123         }
 124
 125         return FALSE;
 126 }
 127
 128 static void
 129 panfrost_flush_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
 130 {
 131         //DBG("TODO %s\n", __func__);
 132 }
 133
 134 static struct pipe_surface *
 135 panfrost_create_surface(struct pipe_context *pipe,
 136                         struct pipe_resource *pt,
 137                         const struct pipe_surface *surf_tmpl)
 138 {
 139         struct pipe_surface *ps = NULL;
 140
 141         ps = CALLOC_STRUCT(pipe_surface);
 142
 143         if (ps) {
 144                 pipe_reference_init(&ps->reference, 1);
 145                 pipe_resource_reference(&ps->texture, pt);
 146                 ps->context = pipe;
 147                 ps->format = surf_tmpl->format;
 148
 149                 if (pt->target != PIPE_BUFFER) {
 150                         assert(surf_tmpl->u.tex.level <= pt->last_level);
 151                         ps->width = u_minify(pt->width0, surf_tmpl->u.tex.level);
 152                         ps->height = u_minify(pt->height0, surf_tmpl->u.tex.level);
 153                         ps->u.tex.level = surf_tmpl->u.tex.level;
 154                         ps->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 155                         ps->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 156                 } else {
 157                         /* setting width as number of elements should get us correct renderbuffer width */
 158                         ps->width = surf_tmpl->u.buf.last_element - surf_tmpl->u.buf.first_element + 1;
 159                         ps->height = pt->height0;
 160                         ps->u.buf.first_element = surf_tmpl->u.buf.first_element;
 161                         ps->u.buf.last_element = surf_tmpl->u.buf.last_element;
 162                         assert(ps->u.buf.first_element <= ps->u.buf.last_element);
 163                         assert(ps->u.buf.last_element < ps->width);
 164                 }
 165         }
 166
 167         return ps;
 168 }
 169
 170 static void
 171 panfrost_surface_destroy(struct pipe_context *pipe,
 172                          struct pipe_surface *surf)
 173 {
 174         assert(surf->texture);
 175         pipe_resource_reference(&surf->texture, NULL);
 176         free(surf);
 177 }
 178
 179 static void
 180 panfrost_setup_slices(const struct pipe_resource *tmpl, struct panfrost_bo *bo)
 181 {
 182         unsigned width = tmpl->width0;
 183         unsigned height = tmpl->height0;
 184         unsigned depth = tmpl->depth0;
 185         unsigned bytes_per_pixel = util_format_get_blocksize(tmpl->format);
 186
 187         assert(depth > 0);
 188
 189         /* Tiled operates blockwise; linear is packed. Also, anything
 190          * we render to has to be tile-aligned. Maybe not strictly
 191          * necessary, but we're not *that* pressed for memory and it
 192          * makes code a lot simpler */
 193
 194         bool renderable = tmpl->bind &
 195                 (PIPE_BIND_RENDER_TARGET | PIPE_BIND_DEPTH_STENCIL);
 196         bool tiled = bo->layout == PAN_TILED;
 197         bool should_align = renderable || tiled;
 198
 199         /* We don't know how to specify a 2D stride for 3D textures */
 200
 201         bool should_align_stride =
 202                 tmpl->target != PIPE_TEXTURE_3D;
 203
 204         should_align &= should_align_stride;
 205
 206         unsigned offset = 0;
 207         unsigned size_2d = 0;
 208
 209         for (unsigned l = 0; l <= tmpl->last_level; ++l) {
 210                 struct panfrost_slice *slice = &bo->slices[l];
 211
 212                 unsigned effective_width = width;
 213                 unsigned effective_height = height;
 214                 unsigned effective_depth = depth;
 215
 216                 if (should_align) {
 217                         effective_width = ALIGN(effective_width, 16);
 218                         effective_height = ALIGN(effective_height, 16);
 219
 220                         /* We don't need to align depth */
 221                 }
 222
 223                 slice->offset = offset;
 224
 225                 /* Compute the would-be stride */
 226                 unsigned stride = bytes_per_pixel * effective_width;
 227
 228                 /* ..but cache-line align it for performance */
 229                 if (should_align_stride)
 230                         stride = ALIGN(stride, 64);
 231
 232                 slice->stride = stride;
 233
 234                 unsigned slice_one_size = slice->stride * effective_height;
 235                 unsigned slice_full_size = slice_one_size * effective_depth;
 236
 237                 /* Report 2D size for 3D texturing */
 238
 239                 if (l == 0)
 240                         size_2d = slice_one_size;
 241
 242                 offset += slice_full_size;
 243
 244                 width = u_minify(width, 1);
 245                 height = u_minify(height, 1);
 246                 depth = u_minify(depth, 1);
 247         }
 248
 249         assert(tmpl->array_size);
 250
 251         if (tmpl->target != PIPE_TEXTURE_3D) {
 252                 /* Arrays and cubemaps have the entire miptree duplicated */
 253
 254                 bo->cubemap_stride = ALIGN(offset, 64);
 255                 bo->size = ALIGN(bo->cubemap_stride * tmpl->array_size, 4096);
 256         } else {
 257                 /* 3D strides across the 2D layers */
 258                 assert(tmpl->array_size == 1);
 259
 260                 bo->cubemap_stride = size_2d;
 261                 bo->size = ALIGN(offset, 4096);
 262         }
 263 }
 264
 265 static struct panfrost_bo *
 266 panfrost_create_bo(struct panfrost_screen *screen, const struct pipe_resource *template)
 267 {
 268         struct panfrost_bo *bo = CALLOC_STRUCT(panfrost_bo);
 269         pipe_reference_init(&bo->reference, 1);
 270
 271         /* Based on the usage, figure out what storing will be used. There are
 272          * various tradeoffs:
 273          *
 274          * Linear: the basic format, bad for memory bandwidth, bad for cache
 275          * use. Zero-copy, though. Renderable.
 276          *
 277          * Tiled: Not compressed, but cache-optimized. Expensive to write into
 278          * (due to software tiling), but cheap to sample from. Ideal for most
 279          * textures.
 280          *
 281          * AFBC: Compressed and renderable (so always desirable for non-scanout
 282          * rendertargets). Cheap to sample from. The format is black box, so we
 283          * can't read/write from software.
 284          */
 285
 286         /* Tiling textures is almost always faster, unless we only use it once */
 287
 288         bool is_texture = (template->bind & PIPE_BIND_SAMPLER_VIEW);
 289         bool is_2d = template->depth0 == 1;
 290         bool is_streaming = (template->usage != PIPE_USAGE_STREAM);
 291
 292         bool should_tile = is_streaming && is_texture && is_2d;
 293
 294         /* Set the layout appropriately */
 295         bo->layout = should_tile ? PAN_TILED : PAN_LINEAR;
 296
 297         panfrost_setup_slices(template, bo);
 298
 299         if (bo->layout == PAN_TILED || bo->layout == PAN_LINEAR) {
 300                 struct panfrost_memory mem;
 301
 302                 screen->driver->allocate_slab(screen, &mem, bo->size / 4096, true, 0, 0, 0);
 303
 304                 bo->cpu = mem.cpu;
 305                 bo->gpu = mem.gpu;
 306                 bo->gem_handle = mem.gem_handle;
 307         }
 308
 309         return bo;
 310 }
 311
 312 static struct pipe_resource *
 313 panfrost_resource_create(struct pipe_screen *screen,
 314                          const struct pipe_resource *template)
 315 {
 316         struct panfrost_resource *so = CALLOC_STRUCT(panfrost_resource);
 317         struct panfrost_screen *pscreen = (struct panfrost_screen *) screen;
 318
 319         so->base = *template;
 320         so->base.screen = screen;
 321
 322         pipe_reference_init(&so->base.reference, 1);
 323
 324         /* Make sure we're familiar */
 325         switch (template->target) {
 326                 case PIPE_BUFFER:
 327                 case PIPE_TEXTURE_1D:
 328                 case PIPE_TEXTURE_2D:
 329                 case PIPE_TEXTURE_3D:
 330                 case PIPE_TEXTURE_CUBE:
 331                 case PIPE_TEXTURE_RECT:
 332                         break;
 333                 default:
 334                         DBG("Unknown texture target %d\n", template->target);
 335                         assert(0);
 336         }
 337
 338         util_range_init(&so->valid_buffer_range);
 339
 340         if (template->bind & PIPE_BIND_DISPLAY_TARGET ||
 341             template->bind & PIPE_BIND_SCANOUT ||
 342             template->bind & PIPE_BIND_SHARED) {
 343                 struct pipe_resource scanout_templat = *template;
 344                 struct renderonly_scanout *scanout;
 345                 struct winsys_handle handle;
 346
 347                 scanout = renderonly_scanout_for_resource(&scanout_templat,
 348                                                           pscreen->ro, &handle);
 349                 if (!scanout)
 350                         return NULL;
 351
 352                 assert(handle.type == WINSYS_HANDLE_TYPE_FD);
 353                 /* TODO: handle modifiers? */
 354                 so = pan_resource(screen->resource_from_handle(screen, template,
 355                                                                  &handle,
 356                                                                  PIPE_HANDLE_USAGE_FRAMEBUFFER_WRITE));
 357                 close(handle.handle);
 358                 if (!so)
 359                         return NULL;
 360
 361                 so->scanout = scanout;
 362                 pscreen->display_target = so;
 363         } else {
 364                 so->bo = panfrost_create_bo(pscreen, template);
 365         }
 366
 367         return (struct pipe_resource *)so;
 368 }
 369
 370 static void
 371 panfrost_destroy_bo(struct panfrost_screen *screen, struct panfrost_bo *pbo)
 372 {
 373         struct panfrost_bo *bo = (struct panfrost_bo *)pbo;
 374
 375         if ((bo->layout == PAN_LINEAR || bo->layout == PAN_TILED) &&
 376                         !bo->imported) {
 377                 struct panfrost_memory mem = {
 378                         .cpu = bo->cpu,
 379                         .gpu = bo->gpu,
 380                         .size = bo->size,
 381                         .gem_handle = bo->gem_handle,
 382                 };
 383
 384                 screen->driver->free_slab(screen, &mem);
 385         }
 386
 387         if (bo->layout == PAN_AFBC) {
 388                 /* TODO */
 389                 DBG("--leaking afbc (%d bytes)--\n", bo->afbc_metadata_size);
 390         }
 391
 392         if (bo->has_checksum) {
 393                 struct panfrost_memory mem = {
 394                         .cpu = bo->checksum_slab.cpu,
 395                         .gpu = bo->checksum_slab.gpu,
 396                         .size = bo->checksum_slab.size,
 397                         .gem_handle = bo->checksum_slab.gem_handle,
 398                 };
 399
 400                 screen->driver->free_slab(screen, &mem);
 401         }
 402
 403         if (bo->imported) {
 404                 screen->driver->free_imported_bo(screen, bo);
 405         }
 406 }
 407
 408 void
 409 panfrost_bo_reference(struct panfrost_bo *bo)
 410 {
 411         pipe_reference(NULL, &bo->reference);
 412 }
 413
 414 void
 415 panfrost_bo_unreference(struct pipe_screen *screen, struct panfrost_bo *bo)
 416 {
 417         /* When the reference count goes to zero, we need to cleanup */
 418
 419         if (pipe_reference(&bo->reference, NULL)) {
 420                 panfrost_destroy_bo(pan_screen(screen), bo);
 421         }
 422 }
 423
 424 static void
 425 panfrost_resource_destroy(struct pipe_screen *screen,
 426                           struct pipe_resource *pt)
 427 {
 428         struct panfrost_screen *pscreen = pan_screen(screen);
 429         struct panfrost_resource *rsrc = (struct panfrost_resource *) pt;
 430
 431         if (rsrc->scanout)
 432                 renderonly_scanout_destroy(rsrc->scanout, pscreen->ro);
 433
 434         if (rsrc->bo)
 435                 panfrost_bo_unreference(screen, rsrc->bo);
 436
 437         util_range_destroy(&rsrc->valid_buffer_range);
 438         FREE(rsrc);
 439 }
 440
 441 static void *
 442 panfrost_transfer_map(struct pipe_context *pctx,
 443                       struct pipe_resource *resource,
 444                       unsigned level,
 445                       unsigned usage,  /* a combination of PIPE_TRANSFER_x */
 446                       const struct pipe_box *box,
 447                       struct pipe_transfer **out_transfer)
 448 {
 449         int bytes_per_pixel = util_format_get_blocksize(resource->format);
 450         struct panfrost_resource *rsrc = pan_resource(resource);
 451         struct panfrost_bo *bo = rsrc->bo;
 452
 453         struct panfrost_gtransfer *transfer = CALLOC_STRUCT(panfrost_gtransfer);
 454         transfer->base.level = level;
 455         transfer->base.usage = usage;
 456         transfer->base.box = *box;
 457
 458         pipe_resource_reference(&transfer->base.resource, resource);
 459
 460         *out_transfer = &transfer->base;
 461
 462         /* Check if we're bound for rendering and this is a read pixels. If so,
 463          * we need to flush */
 464
 465         struct panfrost_context *ctx = pan_context(pctx);
 466         struct pipe_framebuffer_state *fb = &ctx->pipe_framebuffer;
 467
 468         bool is_bound = false;
 469
 470         for (unsigned c = 0; c < fb->nr_cbufs; ++c) {
 471                 is_bound |= fb->cbufs[c]->texture == resource;
 472         }
 473
 474         if (is_bound && (usage & PIPE_TRANSFER_READ)) {
 475                 assert(level == 0);
 476                 panfrost_flush(pctx, NULL, PIPE_FLUSH_END_OF_FRAME);
 477         }
 478
 479         /* TODO: Respect usage flags */
 480
 481         if (usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE) {
 482                 /* TODO: reallocate */
 483                 //printf("debug: Missed reallocate\n");
 484         } else if ((usage & PIPE_TRANSFER_WRITE)
 485                         && resource->target == PIPE_BUFFER
 486                         && !util_ranges_intersect(&rsrc->valid_buffer_range, box->x, box->x + box->width)) {
 487                 /* No flush for writes to uninitialized */
 488         } else if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
 489                 if (usage & PIPE_TRANSFER_WRITE) {
 490                         /* STUB: flush reading */
 491                         //printf("debug: missed reading flush %d\n", resource->target);
 492                 } else if (usage & PIPE_TRANSFER_READ) {
 493                         /* STUB: flush writing */
 494                         //printf("debug: missed writing flush %d (%d-%d)\n", resource->target, box->x, box->x + box->width);
 495                 } else {
 496                         /* Why are you even mapping?! */
 497                 }
 498         }
 499
 500         if (bo->layout != PAN_LINEAR) {
 501                 /* Non-linear resources need to be indirectly mapped */
 502
 503                 if (usage & PIPE_TRANSFER_MAP_DIRECTLY)
 504                         return NULL;
 505
 506                 transfer->base.stride = box->width * bytes_per_pixel;
 507                 transfer->base.layer_stride = transfer->base.stride * box->height;
 508
 509                 /* TODO: Reads */
 510                 transfer->map = malloc(transfer->base.layer_stride * box->depth);
 511
 512                 return transfer->map;
 513         } else {
 514                 transfer->base.stride = bo->slices[level].stride;
 515                 transfer->base.layer_stride = bo->cubemap_stride;
 516
 517                 return bo->cpu
 518                         + bo->slices[level].offset
 519                         + transfer->base.box.z * bo->cubemap_stride
 520                         + transfer->base.box.y * bo->slices[level].stride
 521                         + transfer->base.box.x * bytes_per_pixel;
 522         }
 523 }
 524
 525 static void
 526 panfrost_tile_texture(struct panfrost_screen *screen, struct panfrost_resource *rsrc, struct panfrost_gtransfer *trans)
 527 {
 528         struct panfrost_bo *bo = (struct panfrost_bo *)rsrc->bo;
 529
 530         unsigned level = trans->base.level;
 531
 532         panfrost_texture_swizzle(
 533                         trans->base.box.x,
 534                         trans->base.box.y,
 535                         trans->base.box.width,
 536                         trans->base.box.height,
 537                         util_format_get_blocksize(rsrc->base.format),
 538                         u_minify(rsrc->base.width0, level),
 539                         trans->map,
 540                         bo->cpu
 541                                 + bo->slices[level].offset
 542                                 + bo->cubemap_stride * trans->base.box.z
 543                         );
 544 }
 545
 546 static void
 547 panfrost_transfer_unmap(struct pipe_context *pctx,
 548                         struct pipe_transfer *transfer)
 549 {
 550         struct panfrost_context *ctx = pan_context(pctx);
 551
 552         /* Gallium expects writeback here, so we tile */
 553
 554         struct panfrost_gtransfer *trans = pan_transfer(transfer);
 555         struct panfrost_resource *prsrc = (struct panfrost_resource *) transfer->resource;
 556
 557         if (trans->map) {
 558                 struct panfrost_bo *bo = prsrc->bo;
 559
 560                 if (transfer->usage & PIPE_TRANSFER_WRITE) {
 561
 562                         if (bo->layout == PAN_AFBC) {
 563                                 DBG("Unimplemented: writes to AFBC\n");
 564                         } else if (bo->layout == PAN_TILED) {
 565                                 struct pipe_context *gallium = (struct pipe_context *) ctx;
 566                                 struct panfrost_screen *screen = pan_screen(gallium->screen);
 567                                 assert(transfer->box.depth == 1);
 568                                 panfrost_tile_texture(screen, prsrc, trans);
 569                         }
 570                 }
 571
 572                 free(trans->map);
 573         }
 574
 575
 576         util_range_add(&prsrc->valid_buffer_range,
 577                         transfer->box.x,
 578                         transfer->box.x + transfer->box.width);
 579
 580         /* Derefence the resource */
 581         pipe_resource_reference(&transfer->resource, NULL);
 582
 583         /* Transfer itself is CALLOCed at the moment */
 584         free(transfer);
 585 }
 586
 587 static void
 588 panfrost_transfer_flush_region(struct pipe_context *pctx,
 589                 struct pipe_transfer *transfer,
 590                 const struct pipe_box *box)
 591 {
 592         struct panfrost_resource *rsc = pan_resource(transfer->resource);
 593
 594         if (transfer->resource->target == PIPE_BUFFER) {
 595                 util_range_add(&rsc->valid_buffer_range,
 596                                            transfer->box.x + box->x,
 597                                            transfer->box.x + box->x + box->width);
 598         }
 599 }
 600
 601 static struct pb_slab *
 602 panfrost_slab_alloc(void *priv, unsigned heap, unsigned entry_size, unsigned group_index)
 603 {
 604         struct panfrost_screen *screen = (struct panfrost_screen *) priv;
 605         struct panfrost_memory *mem = CALLOC_STRUCT(panfrost_memory);
 606
 607         size_t slab_size = (1 << (MAX_SLAB_ENTRY_SIZE + 1));
 608
 609         mem->slab.num_entries = slab_size / entry_size;
 610         mem->slab.num_free = mem->slab.num_entries;
 611
 612         LIST_INITHEAD(&mem->slab.free);
 613         for (unsigned i = 0; i < mem->slab.num_entries; ++i) {
 614                 /* Create a slab entry */
 615                 struct panfrost_memory_entry *entry = CALLOC_STRUCT(panfrost_memory_entry);
 616                 entry->offset = entry_size * i;
 617
 618                 entry->base.slab = &mem->slab;
 619                 entry->base.group_index = group_index;
 620
 621                 LIST_ADDTAIL(&entry->base.head, &mem->slab.free);
 622         }
 623
 624         /* Actually allocate the memory from kernel-space. Mapped, same_va, no
 625          * special flags */
 626
 627         screen->driver->allocate_slab(screen, mem, slab_size / 4096, true, 0, 0, 0);
 628
 629         return &mem->slab;
 630 }
 631
 632 static bool
 633 panfrost_slab_can_reclaim(void *priv, struct pb_slab_entry *entry)
 634 {
 635         struct panfrost_memory_entry *p_entry = (struct panfrost_memory_entry *) entry;
 636         return p_entry->freed;
 637 }
 638
 639 static void
 640 panfrost_slab_free(void *priv, struct pb_slab *slab)
 641 {
 642         struct panfrost_memory *mem = (struct panfrost_memory *) slab;
 643         struct panfrost_screen *screen = (struct panfrost_screen *) priv;
 644
 645         screen->driver->free_slab(screen, mem);
 646 }
 647
 648 static void
 649 panfrost_invalidate_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
 650 {
 651         //DBG("TODO %s\n", __func__);
 652 }
 653
 654 static enum pipe_format
 655 panfrost_resource_get_internal_format(struct pipe_resource *prsrc)
 656 {
 657         return prsrc->format;
 658 }
 659
 660 static void
 661 panfrost_resource_set_stencil(struct pipe_resource *prsrc,
 662                               struct pipe_resource *stencil)
 663 {
 664         pan_resource(prsrc)->separate_stencil = pan_resource(stencil);
 665 }
 666
 667 static struct pipe_resource *
 668 panfrost_resource_get_stencil(struct pipe_resource *prsrc)
 669 {
 670         return &pan_resource(prsrc)->separate_stencil->base;
 671 }
 672
 673 static const struct u_transfer_vtbl transfer_vtbl = {
 674         .resource_create          = panfrost_resource_create,
 675         .resource_destroy         = panfrost_resource_destroy,
 676         .transfer_map             = panfrost_transfer_map,
 677         .transfer_unmap           = panfrost_transfer_unmap,
 678         .transfer_flush_region    = panfrost_transfer_flush_region,
 679         .get_internal_format      = panfrost_resource_get_internal_format,
 680         .set_stencil              = panfrost_resource_set_stencil,
 681         .get_stencil              = panfrost_resource_get_stencil,
 682 };
 683
 684 void
 685 panfrost_resource_screen_init(struct panfrost_screen *pscreen)
 686 {
 687         //pscreen->base.resource_create_with_modifiers =
 688         //        panfrost_resource_create_with_modifiers;
 689         pscreen->base.resource_create = u_transfer_helper_resource_create;
 690         pscreen->base.resource_destroy = u_transfer_helper_resource_destroy;
 691         pscreen->base.resource_from_handle = panfrost_resource_from_handle;
 692         pscreen->base.resource_get_handle = panfrost_resource_get_handle;
 693         pscreen->base.transfer_helper = u_transfer_helper_create(&transfer_vtbl,
 694                                                             true, false,
 695                                                             true, true);
 696
 697         pb_slabs_init(&pscreen->slabs,
 698                         MIN_SLAB_ENTRY_SIZE,
 699                         MAX_SLAB_ENTRY_SIZE,
 700
 701                         3, /* Number of heaps */
 702
 703                         pscreen,
 704
 705                         panfrost_slab_can_reclaim,
 706                         panfrost_slab_alloc,
 707                         panfrost_slab_free);
 708 }
 709
 710 void
 711 panfrost_resource_context_init(struct pipe_context *pctx)
 712 {
 713         pctx->transfer_map = u_transfer_helper_transfer_map;
 714         pctx->transfer_flush_region = u_transfer_helper_transfer_flush_region;
 715         pctx->transfer_unmap = u_transfer_helper_transfer_unmap;
 716         pctx->buffer_subdata = u_default_buffer_subdata;
 717         pctx->create_surface = panfrost_create_surface;
 718         pctx->surface_destroy = panfrost_surface_destroy;
 719         pctx->resource_copy_region = util_resource_copy_region;
 720         pctx->blit = panfrost_blit;
 721         pctx->flush_resource = panfrost_flush_resource;
 722         pctx->invalidate_resource = panfrost_invalidate_resource;
 723         pctx->transfer_flush_region = u_transfer_helper_transfer_flush_region;
 724         pctx->buffer_subdata = u_default_buffer_subdata;
 725         pctx->texture_subdata = u_default_texture_subdata;
 726 }