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, Ltd.
   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 #include "util/u_gen_mipmap.h"
  43
  44 #include "pan_context.h"
  45 #include "pan_screen.h"
  46 #include "pan_resource.h"
  47 #include "pan_util.h"
  48 #include "pan_tiling.h"
  49
  50 static struct pipe_resource *
  51 panfrost_resource_from_handle(struct pipe_screen *pscreen,
  52                               const struct pipe_resource *templat,
  53                               struct winsys_handle *whandle,
  54                               unsigned usage)
  55 {
  56         struct panfrost_screen *screen = pan_screen(pscreen);
  57         struct panfrost_resource *rsc;
  58         struct pipe_resource *prsc;
  59
  60         assert(whandle->type == WINSYS_HANDLE_TYPE_FD);
  61
  62         rsc = rzalloc(pscreen, struct panfrost_resource);
  63         if (!rsc)
  64                 return NULL;
  65
  66         prsc = &rsc->base;
  67
  68         *prsc = *templat;
  69
  70         pipe_reference_init(&prsc->reference, 1);
  71         prsc->screen = pscreen;
  72
  73         rsc->bo = panfrost_drm_import_bo(screen, whandle);
  74         rsc->bo->slices[0].stride = whandle->stride;
  75         rsc->bo->slices[0].initialized = true;
  76
  77         if (screen->ro) {
  78                 rsc->scanout =
  79                         renderonly_create_gpu_import_for_resource(prsc, screen->ro, NULL);
  80                 /* failure is expected in some cases.. */
  81         }
  82
  83         return prsc;
  84 }
  85
  86 static boolean
  87 panfrost_resource_get_handle(struct pipe_screen *pscreen,
  88                              struct pipe_context *ctx,
  89                              struct pipe_resource *pt,
  90                              struct winsys_handle *handle,
  91                              unsigned usage)
  92 {
  93         struct panfrost_screen *screen = pan_screen(pscreen);
  94         struct panfrost_resource *rsrc = (struct panfrost_resource *) pt;
  95         struct renderonly_scanout *scanout = rsrc->scanout;
  96
  97         handle->modifier = DRM_FORMAT_MOD_INVALID;
  98
  99         if (handle->type == WINSYS_HANDLE_TYPE_SHARED) {
 100                 return FALSE;
 101         } else if (handle->type == WINSYS_HANDLE_TYPE_KMS) {
 102                 if (renderonly_get_handle(scanout, handle))
 103                         return TRUE;
 104
 105                 handle->handle = rsrc->bo->gem_handle;
 106                 handle->stride = rsrc->bo->slices[0].stride;
 107                 return TRUE;
 108         } else if (handle->type == WINSYS_HANDLE_TYPE_FD) {
 109                 if (scanout) {
 110                         struct drm_prime_handle args = {
 111                                 .handle = scanout->handle,
 112                                 .flags = DRM_CLOEXEC,
 113                         };
 114
 115                         int ret = drmIoctl(screen->ro->kms_fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &args);
 116                         if (ret == -1)
 117                                 return FALSE;
 118
 119                         handle->stride = scanout->stride;
 120                         handle->handle = args.fd;
 121
 122                         return TRUE;
 123                 } else
 124                         return panfrost_drm_export_bo(screen, rsrc->bo->gem_handle,
 125                                                       rsrc->bo->slices[0].stride,
 126                                                       handle);
 127         }
 128
 129         return FALSE;
 130 }
 131
 132 static void
 133 panfrost_flush_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
 134 {
 135         //DBG("TODO %s\n", __func__);
 136 }
 137
 138 static struct pipe_surface *
 139 panfrost_create_surface(struct pipe_context *pipe,
 140                         struct pipe_resource *pt,
 141                         const struct pipe_surface *surf_tmpl)
 142 {
 143         struct pipe_surface *ps = NULL;
 144
 145         ps = rzalloc(pipe, struct pipe_surface);
 146
 147         if (ps) {
 148                 pipe_reference_init(&ps->reference, 1);
 149                 pipe_resource_reference(&ps->texture, pt);
 150                 ps->context = pipe;
 151                 ps->format = surf_tmpl->format;
 152
 153                 if (pt->target != PIPE_BUFFER) {
 154                         assert(surf_tmpl->u.tex.level <= pt->last_level);
 155                         ps->width = u_minify(pt->width0, surf_tmpl->u.tex.level);
 156                         ps->height = u_minify(pt->height0, surf_tmpl->u.tex.level);
 157                         ps->u.tex.level = surf_tmpl->u.tex.level;
 158                         ps->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 159                         ps->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 160                 } else {
 161                         /* setting width as number of elements should get us correct renderbuffer width */
 162                         ps->width = surf_tmpl->u.buf.last_element - surf_tmpl->u.buf.first_element + 1;
 163                         ps->height = pt->height0;
 164                         ps->u.buf.first_element = surf_tmpl->u.buf.first_element;
 165                         ps->u.buf.last_element = surf_tmpl->u.buf.last_element;
 166                         assert(ps->u.buf.first_element <= ps->u.buf.last_element);
 167                         assert(ps->u.buf.last_element < ps->width);
 168                 }
 169         }
 170
 171         return ps;
 172 }
 173
 174 static void
 175 panfrost_surface_destroy(struct pipe_context *pipe,
 176                          struct pipe_surface *surf)
 177 {
 178         assert(surf->texture);
 179         pipe_resource_reference(&surf->texture, NULL);
 180         ralloc_free(surf);
 181 }
 182
 183 static struct pipe_resource *
 184 panfrost_create_scanout_res(struct pipe_screen *screen,
 185                             const struct pipe_resource *template)
 186 {
 187         struct panfrost_screen *pscreen = pan_screen(screen);
 188         struct pipe_resource scanout_templat = *template;
 189         struct renderonly_scanout *scanout;
 190         struct winsys_handle handle;
 191         struct pipe_resource *res;
 192
 193         scanout = renderonly_scanout_for_resource(&scanout_templat,
 194                                                   pscreen->ro, &handle);
 195         if (!scanout)
 196                 return NULL;
 197
 198         assert(handle.type == WINSYS_HANDLE_TYPE_FD);
 199         /* TODO: handle modifiers? */
 200         res = screen->resource_from_handle(screen, template, &handle,
 201                                            PIPE_HANDLE_USAGE_FRAMEBUFFER_WRITE);
 202         close(handle.handle);
 203         if (!res)
 204                 return NULL;
 205
 206         struct panfrost_resource *pres = pan_resource(res);
 207
 208         pres->scanout = scanout;
 209         pscreen->display_target = pres;
 210
 211         return res;
 212 }
 213
 214 /* Computes sizes for checksumming, which is 8 bytes per 16x16 tile */
 215
 216 #define CHECKSUM_TILE_WIDTH 16
 217 #define CHECKSUM_TILE_HEIGHT 16
 218 #define CHECKSUM_BYTES_PER_TILE 8
 219
 220 static unsigned
 221 panfrost_compute_checksum_sizes(
 222                 struct panfrost_slice *slice,
 223                 unsigned width,
 224                 unsigned height)
 225 {
 226         unsigned aligned_width = ALIGN(width, CHECKSUM_TILE_WIDTH);
 227         unsigned aligned_height = ALIGN(height, CHECKSUM_TILE_HEIGHT);
 228
 229         unsigned tile_count_x = aligned_width / CHECKSUM_TILE_WIDTH;
 230         unsigned tile_count_y = aligned_height / CHECKSUM_TILE_HEIGHT;
 231
 232         slice->checksum_stride = tile_count_x * CHECKSUM_BYTES_PER_TILE;
 233
 234         return slice->checksum_stride * tile_count_y;
 235 }
 236
 237 /* Setup the mip tree given a particular layout, possibly with checksumming */
 238
 239 static void
 240 panfrost_setup_slices(const struct pipe_resource *tmpl, struct panfrost_bo *bo)
 241 {
 242         unsigned width = tmpl->width0;
 243         unsigned height = tmpl->height0;
 244         unsigned depth = tmpl->depth0;
 245         unsigned bytes_per_pixel = util_format_get_blocksize(tmpl->format);
 246
 247         assert(depth > 0);
 248
 249         /* Tiled operates blockwise; linear is packed. Also, anything
 250          * we render to has to be tile-aligned. Maybe not strictly
 251          * necessary, but we're not *that* pressed for memory and it
 252          * makes code a lot simpler */
 253
 254         bool renderable = tmpl->bind &
 255                 (PIPE_BIND_RENDER_TARGET | PIPE_BIND_DEPTH_STENCIL);
 256         bool afbc = bo->layout == PAN_AFBC;
 257         bool tiled = bo->layout == PAN_TILED;
 258         bool should_align = renderable || tiled;
 259
 260         /* We don't know how to specify a 2D stride for 3D textures */
 261
 262         bool can_align_stride =
 263                 tmpl->target != PIPE_TEXTURE_3D;
 264
 265         should_align &= can_align_stride;
 266
 267         unsigned offset = 0;
 268         unsigned size_2d = 0;
 269
 270         for (unsigned l = 0; l <= tmpl->last_level; ++l) {
 271                 struct panfrost_slice *slice = &bo->slices[l];
 272
 273                 unsigned effective_width = width;
 274                 unsigned effective_height = height;
 275                 unsigned effective_depth = depth;
 276
 277                 if (should_align) {
 278                         effective_width = ALIGN(effective_width, 16);
 279                         effective_height = ALIGN(effective_height, 16);
 280
 281                         /* We don't need to align depth */
 282                 }
 283
 284                 slice->offset = offset;
 285
 286                 /* Compute the would-be stride */
 287                 unsigned stride = bytes_per_pixel * effective_width;
 288
 289                 /* ..but cache-line align it for performance */
 290                 if (can_align_stride && bo->layout == PAN_LINEAR)
 291                         stride = ALIGN(stride, 64);
 292
 293                 slice->stride = stride;
 294
 295                 unsigned slice_one_size = slice->stride * effective_height;
 296                 unsigned slice_full_size = slice_one_size * effective_depth;
 297
 298                 /* Report 2D size for 3D texturing */
 299
 300                 if (l == 0)
 301                         size_2d = slice_one_size;
 302
 303                 /* Compute AFBC sizes if necessary */
 304                 if (afbc) {
 305                         slice->header_size =
 306                                 panfrost_afbc_header_size(width, height);
 307
 308                         offset += slice->header_size;
 309                 }
 310
 311                 offset += slice_full_size;
 312
 313                 /* Add a checksum region if necessary */
 314                 if (bo->checksummed) {
 315                         slice->checksum_offset = offset;
 316
 317                         unsigned size = panfrost_compute_checksum_sizes(
 318                                         slice, width, height);
 319
 320                         offset += size;
 321                 }
 322
 323                 width = u_minify(width, 1);
 324                 height = u_minify(height, 1);
 325                 depth = u_minify(depth, 1);
 326         }
 327
 328         assert(tmpl->array_size);
 329
 330         if (tmpl->target != PIPE_TEXTURE_3D) {
 331                 /* Arrays and cubemaps have the entire miptree duplicated */
 332
 333                 bo->cubemap_stride = ALIGN(offset, 64);
 334                 bo->size = ALIGN(bo->cubemap_stride * tmpl->array_size, 4096);
 335         } else {
 336                 /* 3D strides across the 2D layers */
 337                 assert(tmpl->array_size == 1);
 338
 339                 bo->cubemap_stride = size_2d;
 340                 bo->size = ALIGN(offset, 4096);
 341         }
 342 }
 343
 344 static struct panfrost_bo *
 345 panfrost_create_bo(struct panfrost_screen *screen, const struct pipe_resource *template)
 346 {
 347         struct panfrost_bo *bo = rzalloc(screen, struct panfrost_bo);
 348         pipe_reference_init(&bo->reference, 1);
 349
 350         /* Based on the usage, figure out what storing will be used. There are
 351          * various tradeoffs:
 352          *
 353          * Linear: the basic format, bad for memory bandwidth, bad for cache
 354          * use. Zero-copy, though. Renderable.
 355          *
 356          * Tiled: Not compressed, but cache-optimized. Expensive to write into
 357          * (due to software tiling), but cheap to sample from. Ideal for most
 358          * textures.
 359          *
 360          * AFBC: Compressed and renderable (so always desirable for non-scanout
 361          * rendertargets). Cheap to sample from. The format is black box, so we
 362          * can't read/write from software.
 363          */
 364
 365         /* Tiling textures is almost always faster, unless we only use it once */
 366
 367         bool is_texture = (template->bind & PIPE_BIND_SAMPLER_VIEW);
 368         bool is_2d = template->depth0 == 1 && template->array_size == 1;
 369         bool is_streaming = (template->usage != PIPE_USAGE_STREAM);
 370
 371         bool should_tile = is_streaming && is_texture && is_2d;
 372
 373         /* Depth/stencil can't be tiled, only linear or AFBC */
 374         should_tile &= !(template->bind & PIPE_BIND_DEPTH_STENCIL);
 375
 376         /* FBOs we would like to checksum, if at all possible */
 377         bool can_checksum = !(template->bind & (PIPE_BIND_SCANOUT | PIPE_BIND_SHARED));
 378         bool should_checksum = template->bind & PIPE_BIND_RENDER_TARGET;
 379
 380         bo->checksummed = can_checksum && should_checksum;
 381
 382         /* Set the layout appropriately */
 383         bo->layout = should_tile ? PAN_TILED : PAN_LINEAR;
 384
 385         panfrost_setup_slices(template, bo);
 386
 387         struct panfrost_memory mem;
 388
 389         panfrost_drm_allocate_slab(screen, &mem, bo->size / 4096, true, 0, 0, 0);
 390
 391         bo->cpu = mem.cpu;
 392         bo->gpu = mem.gpu;
 393         bo->gem_handle = mem.gem_handle;
 394
 395         return bo;
 396 }
 397
 398 static struct pipe_resource *
 399 panfrost_resource_create(struct pipe_screen *screen,
 400                          const struct pipe_resource *template)
 401 {
 402         /* Make sure we're familiar */
 403         switch (template->target) {
 404                 case PIPE_BUFFER:
 405                 case PIPE_TEXTURE_1D:
 406                 case PIPE_TEXTURE_2D:
 407                 case PIPE_TEXTURE_3D:
 408                 case PIPE_TEXTURE_CUBE:
 409                 case PIPE_TEXTURE_RECT:
 410                 case PIPE_TEXTURE_2D_ARRAY:
 411                         break;
 412                 default:
 413                         DBG("Unknown texture target %d\n", template->target);
 414                         assert(0);
 415         }
 416
 417         if (template->bind &
 418             (PIPE_BIND_DISPLAY_TARGET | PIPE_BIND_SCANOUT | PIPE_BIND_SHARED))
 419                 return panfrost_create_scanout_res(screen, template);
 420
 421         struct panfrost_resource *so = rzalloc(screen, struct panfrost_resource);
 422         struct panfrost_screen *pscreen = (struct panfrost_screen *) screen;
 423
 424         so->base = *template;
 425         so->base.screen = screen;
 426
 427         pipe_reference_init(&so->base.reference, 1);
 428
 429         util_range_init(&so->valid_buffer_range);
 430
 431         so->bo = panfrost_create_bo(pscreen, template);
 432         return (struct pipe_resource *)so;
 433 }
 434
 435 static void
 436 panfrost_destroy_bo(struct panfrost_screen *screen, struct panfrost_bo *bo)
 437 {
 438         if (bo->imported) {
 439                 panfrost_drm_free_imported_bo(screen, bo);
 440         } else {
 441                 struct panfrost_memory mem = {
 442                         .cpu = bo->cpu,
 443                         .gpu = bo->gpu,
 444                         .size = bo->size,
 445                         .gem_handle = bo->gem_handle,
 446                 };
 447
 448                 panfrost_drm_free_slab(screen, &mem);
 449         }
 450
 451         ralloc_free(bo);
 452 }
 453
 454 void
 455 panfrost_bo_reference(struct panfrost_bo *bo)
 456 {
 457         pipe_reference(NULL, &bo->reference);
 458 }
 459
 460 void
 461 panfrost_bo_unreference(struct pipe_screen *screen, struct panfrost_bo *bo)
 462 {
 463         /* When the reference count goes to zero, we need to cleanup */
 464
 465         if (pipe_reference(&bo->reference, NULL)) {
 466                 panfrost_destroy_bo(pan_screen(screen), bo);
 467         }
 468 }
 469
 470 static void
 471 panfrost_resource_destroy(struct pipe_screen *screen,
 472                           struct pipe_resource *pt)
 473 {
 474         struct panfrost_screen *pscreen = pan_screen(screen);
 475         struct panfrost_resource *rsrc = (struct panfrost_resource *) pt;
 476
 477         if (rsrc->scanout)
 478                 renderonly_scanout_destroy(rsrc->scanout, pscreen->ro);
 479
 480         if (rsrc->bo)
 481                 panfrost_bo_unreference(screen, rsrc->bo);
 482
 483         util_range_destroy(&rsrc->valid_buffer_range);
 484         ralloc_free(rsrc);
 485 }
 486
 487 static void *
 488 panfrost_transfer_map(struct pipe_context *pctx,
 489                       struct pipe_resource *resource,
 490                       unsigned level,
 491                       unsigned usage,  /* a combination of PIPE_TRANSFER_x */
 492                       const struct pipe_box *box,
 493                       struct pipe_transfer **out_transfer)
 494 {
 495         int bytes_per_pixel = util_format_get_blocksize(resource->format);
 496         struct panfrost_resource *rsrc = pan_resource(resource);
 497         struct panfrost_bo *bo = rsrc->bo;
 498
 499         struct panfrost_gtransfer *transfer = rzalloc(pctx, struct panfrost_gtransfer);
 500         transfer->base.level = level;
 501         transfer->base.usage = usage;
 502         transfer->base.box = *box;
 503
 504         pipe_resource_reference(&transfer->base.resource, resource);
 505
 506         *out_transfer = &transfer->base;
 507
 508         /* Check if we're bound for rendering and this is a read pixels. If so,
 509          * we need to flush */
 510
 511         struct panfrost_context *ctx = pan_context(pctx);
 512         struct pipe_framebuffer_state *fb = &ctx->pipe_framebuffer;
 513
 514         bool is_bound = false;
 515
 516         for (unsigned c = 0; c < fb->nr_cbufs; ++c) {
 517                 is_bound |= fb->cbufs[c]->texture == resource;
 518         }
 519
 520         if (is_bound && (usage & PIPE_TRANSFER_READ)) {
 521                 assert(level == 0);
 522                 panfrost_flush(pctx, NULL, PIPE_FLUSH_END_OF_FRAME);
 523         }
 524
 525         /* TODO: Respect usage flags */
 526
 527         if (usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE) {
 528                 /* TODO: reallocate */
 529                 //printf("debug: Missed reallocate\n");
 530         } else if ((usage & PIPE_TRANSFER_WRITE)
 531                         && resource->target == PIPE_BUFFER
 532                         && !util_ranges_intersect(&rsrc->valid_buffer_range, box->x, box->x + box->width)) {
 533                 /* No flush for writes to uninitialized */
 534         } else if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
 535                 if (usage & PIPE_TRANSFER_WRITE) {
 536                         /* STUB: flush reading */
 537                         //printf("debug: missed reading flush %d\n", resource->target);
 538                 } else if (usage & PIPE_TRANSFER_READ) {
 539                         /* STUB: flush writing */
 540                         //printf("debug: missed writing flush %d (%d-%d)\n", resource->target, box->x, box->x + box->width);
 541                 } else {
 542                         /* Why are you even mapping?! */
 543                 }
 544         }
 545
 546         if (bo->layout != PAN_LINEAR) {
 547                 /* Non-linear resources need to be indirectly mapped */
 548
 549                 if (usage & PIPE_TRANSFER_MAP_DIRECTLY)
 550                         return NULL;
 551
 552                 transfer->base.stride = box->width * bytes_per_pixel;
 553                 transfer->base.layer_stride = transfer->base.stride * box->height;
 554                 transfer->map = rzalloc_size(transfer, transfer->base.layer_stride * box->depth);
 555                 assert(box->depth == 1);
 556
 557                 if ((usage & PIPE_TRANSFER_READ) && bo->slices[level].initialized) {
 558                         if (bo->layout == PAN_AFBC) {
 559                                 DBG("Unimplemented: reads from AFBC");
 560                         } else if (bo->layout == PAN_TILED) {
 561                                 panfrost_load_tiled_image(
 562                                                 transfer->map,
 563                                                 bo->cpu + bo->slices[level].offset,
 564                                                 box,
 565                                                 transfer->base.stride,
 566                                                 bo->slices[level].stride,
 567                                                 util_format_get_blocksize(resource->format));
 568                         }
 569                 }
 570
 571                 return transfer->map;
 572         } else {
 573                 transfer->base.stride = bo->slices[level].stride;
 574                 transfer->base.layer_stride = bo->cubemap_stride;
 575
 576                 /* By mapping direct-write, we're implicitly already
 577                  * initialized (maybe), so be conservative */
 578
 579                 if ((usage & PIPE_TRANSFER_WRITE) && (usage & PIPE_TRANSFER_MAP_DIRECTLY))
 580                         bo->slices[level].initialized = true;
 581
 582                 return bo->cpu
 583                         + bo->slices[level].offset
 584                         + transfer->base.box.z * bo->cubemap_stride
 585                         + transfer->base.box.y * bo->slices[level].stride
 586                         + transfer->base.box.x * bytes_per_pixel;
 587         }
 588 }
 589
 590 static void
 591 panfrost_transfer_unmap(struct pipe_context *pctx,
 592                         struct pipe_transfer *transfer)
 593 {
 594         /* Gallium expects writeback here, so we tile */
 595
 596         struct panfrost_gtransfer *trans = pan_transfer(transfer);
 597         struct panfrost_resource *prsrc = (struct panfrost_resource *) transfer->resource;
 598
 599         if (trans->map) {
 600                 struct panfrost_bo *bo = prsrc->bo;
 601
 602                 if (transfer->usage & PIPE_TRANSFER_WRITE) {
 603                         unsigned level = transfer->level;
 604                         bo->slices[level].initialized = true;
 605
 606                         if (bo->layout == PAN_AFBC) {
 607                                 DBG("Unimplemented: writes to AFBC\n");
 608                         } else if (bo->layout == PAN_TILED) {
 609                                 assert(transfer->box.depth == 1);
 610
 611                                 panfrost_store_tiled_image(
 612                                                 bo->cpu + bo->slices[level].offset,
 613                                                 trans->map,
 614                                                 &transfer->box,
 615                                                 bo->slices[level].stride,
 616                                                 transfer->stride,
 617                                                 util_format_get_blocksize(prsrc->base.format));
 618                         }
 619                 }
 620         }
 621
 622
 623         util_range_add(&prsrc->valid_buffer_range,
 624                         transfer->box.x,
 625                         transfer->box.x + transfer->box.width);
 626
 627         /* Derefence the resource */
 628         pipe_resource_reference(&transfer->resource, NULL);
 629
 630         /* Transfer itself is RALLOCed at the moment */
 631         ralloc_free(transfer);
 632 }
 633
 634 static void
 635 panfrost_transfer_flush_region(struct pipe_context *pctx,
 636                 struct pipe_transfer *transfer,
 637                 const struct pipe_box *box)
 638 {
 639         struct panfrost_resource *rsc = pan_resource(transfer->resource);
 640
 641         if (transfer->resource->target == PIPE_BUFFER) {
 642                 util_range_add(&rsc->valid_buffer_range,
 643                                            transfer->box.x + box->x,
 644                                            transfer->box.x + box->x + box->width);
 645         }
 646 }
 647
 648 static struct pb_slab *
 649 panfrost_slab_alloc(void *priv, unsigned heap, unsigned entry_size, unsigned group_index)
 650 {
 651         struct panfrost_screen *screen = (struct panfrost_screen *) priv;
 652         struct panfrost_memory *mem = rzalloc(screen, struct panfrost_memory);
 653
 654         size_t slab_size = (1 << (MAX_SLAB_ENTRY_SIZE + 1));
 655
 656         mem->slab.num_entries = slab_size / entry_size;
 657         mem->slab.num_free = mem->slab.num_entries;
 658
 659         LIST_INITHEAD(&mem->slab.free);
 660         for (unsigned i = 0; i < mem->slab.num_entries; ++i) {
 661                 /* Create a slab entry */
 662                 struct panfrost_memory_entry *entry = rzalloc(mem, struct panfrost_memory_entry);
 663                 entry->offset = entry_size * i;
 664
 665                 entry->base.slab = &mem->slab;
 666                 entry->base.group_index = group_index;
 667
 668                 LIST_ADDTAIL(&entry->base.head, &mem->slab.free);
 669         }
 670
 671         /* Actually allocate the memory from kernel-space. Mapped, same_va, no
 672          * special flags */
 673
 674         panfrost_drm_allocate_slab(screen, mem, slab_size / 4096, true, 0, 0, 0);
 675
 676         return &mem->slab;
 677 }
 678
 679 static bool
 680 panfrost_slab_can_reclaim(void *priv, struct pb_slab_entry *entry)
 681 {
 682         struct panfrost_memory_entry *p_entry = (struct panfrost_memory_entry *) entry;
 683         return p_entry->freed;
 684 }
 685
 686 static void
 687 panfrost_slab_free(void *priv, struct pb_slab *slab)
 688 {
 689         struct panfrost_memory *mem = (struct panfrost_memory *) slab;
 690         struct panfrost_screen *screen = (struct panfrost_screen *) priv;
 691
 692         panfrost_drm_free_slab(screen, mem);
 693         ralloc_free(mem);
 694 }
 695
 696 static void
 697 panfrost_invalidate_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
 698 {
 699         //DBG("TODO %s\n", __func__);
 700 }
 701
 702 static enum pipe_format
 703 panfrost_resource_get_internal_format(struct pipe_resource *prsrc)
 704 {
 705         return prsrc->format;
 706 }
 707
 708 static boolean
 709 panfrost_generate_mipmap(
 710                 struct pipe_context *pctx,
 711                 struct pipe_resource *prsrc,
 712                 enum pipe_format format,
 713                 unsigned base_level,
 714                 unsigned last_level,
 715                 unsigned first_layer,
 716                 unsigned last_layer)
 717 {
 718         struct panfrost_context *ctx = pan_context(pctx);
 719         struct panfrost_resource *rsrc = pan_resource(prsrc);
 720
 721         /* Generating a mipmap invalidates the written levels, so make that
 722          * explicit so we don't try to wallpaper them back and end up with
 723          * u_blitter recursion */
 724
 725         assert(rsrc->bo);
 726         for (unsigned l = base_level + 1; l <= last_level; ++l)
 727                 rsrc->bo->slices[l].initialized = false;
 728
 729         /* Beyond that, we just delegate the hard stuff. We're careful to
 730          * include flushes on both ends to make sure the data is really valid.
 731          * We could be doing a lot better perf-wise, especially once we have
 732          * reorder-type optimizations in place. But for now prioritize
 733          * correctness. */
 734
 735         struct panfrost_job *job = panfrost_get_job_for_fbo(ctx);
 736         bool has_draws = job->last_job.gpu;
 737
 738         if (has_draws)
 739                 panfrost_flush(pctx, NULL, PIPE_FLUSH_END_OF_FRAME);
 740
 741         /* We've flushed the original buffer if needed, now trigger a blit */
 742
 743         bool blit_res = util_gen_mipmap(
 744                         pctx, prsrc, format,
 745                         base_level, last_level,
 746                         first_layer, last_layer,
 747                         PIPE_TEX_FILTER_LINEAR);
 748
 749         /* If the blit was successful, flush once more. If it wasn't, well, let
 750          * the state tracker deal with it. */
 751
 752         if (blit_res)
 753                 panfrost_flush(pctx, NULL, PIPE_FLUSH_END_OF_FRAME);
 754
 755         return blit_res;
 756 }
 757
 758 /* Computes the address to a texture at a particular slice */
 759
 760 mali_ptr
 761 panfrost_get_texture_address(
 762                 struct panfrost_resource *rsrc,
 763                 unsigned level, unsigned face)
 764 {
 765         unsigned level_offset = rsrc->bo->slices[level].offset;
 766         unsigned face_offset = face * rsrc->bo->cubemap_stride;
 767
 768         return rsrc->bo->gpu + level_offset + face_offset;
 769 }
 770
 771 static void
 772 panfrost_resource_set_stencil(struct pipe_resource *prsrc,
 773                               struct pipe_resource *stencil)
 774 {
 775         pan_resource(prsrc)->separate_stencil = pan_resource(stencil);
 776 }
 777
 778 static struct pipe_resource *
 779 panfrost_resource_get_stencil(struct pipe_resource *prsrc)
 780 {
 781         return &pan_resource(prsrc)->separate_stencil->base;
 782 }
 783
 784 static const struct u_transfer_vtbl transfer_vtbl = {
 785         .resource_create          = panfrost_resource_create,
 786         .resource_destroy         = panfrost_resource_destroy,
 787         .transfer_map             = panfrost_transfer_map,
 788         .transfer_unmap           = panfrost_transfer_unmap,
 789         .transfer_flush_region    = panfrost_transfer_flush_region,
 790         .get_internal_format      = panfrost_resource_get_internal_format,
 791         .set_stencil              = panfrost_resource_set_stencil,
 792         .get_stencil              = panfrost_resource_get_stencil,
 793 };
 794
 795 void
 796 panfrost_resource_screen_init(struct panfrost_screen *pscreen)
 797 {
 798         //pscreen->base.resource_create_with_modifiers =
 799         //        panfrost_resource_create_with_modifiers;
 800         pscreen->base.resource_create = u_transfer_helper_resource_create;
 801         pscreen->base.resource_destroy = u_transfer_helper_resource_destroy;
 802         pscreen->base.resource_from_handle = panfrost_resource_from_handle;
 803         pscreen->base.resource_get_handle = panfrost_resource_get_handle;
 804         pscreen->base.transfer_helper = u_transfer_helper_create(&transfer_vtbl,
 805                                                             true, false,
 806                                                             true, true);
 807
 808         pb_slabs_init(&pscreen->slabs,
 809                         MIN_SLAB_ENTRY_SIZE,
 810                         MAX_SLAB_ENTRY_SIZE,
 811
 812                         3, /* Number of heaps */
 813
 814                         pscreen,
 815
 816                         panfrost_slab_can_reclaim,
 817                         panfrost_slab_alloc,
 818                         panfrost_slab_free);
 819 }
 820
 821 void
 822 panfrost_resource_screen_deinit(struct panfrost_screen *pscreen)
 823 {
 824         pb_slabs_deinit(&pscreen->slabs);
 825 }
 826
 827 void
 828 panfrost_resource_context_init(struct pipe_context *pctx)
 829 {
 830         pctx->transfer_map = u_transfer_helper_transfer_map;
 831         pctx->transfer_flush_region = u_transfer_helper_transfer_flush_region;
 832         pctx->transfer_unmap = u_transfer_helper_transfer_unmap;
 833         pctx->buffer_subdata = u_default_buffer_subdata;
 834         pctx->create_surface = panfrost_create_surface;
 835         pctx->surface_destroy = panfrost_surface_destroy;
 836         pctx->resource_copy_region = util_resource_copy_region;
 837         pctx->blit = panfrost_blit;
 838         pctx->generate_mipmap = panfrost_generate_mipmap;
 839         pctx->flush_resource = panfrost_flush_resource;
 840         pctx->invalidate_resource = panfrost_invalidate_resource;
 841         pctx->transfer_flush_region = u_transfer_helper_transfer_flush_region;
 842         pctx->buffer_subdata = u_default_buffer_subdata;
 843         pctx->texture_subdata = u_default_texture_subdata;
 844 }