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