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