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