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