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