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         pres->bo = panfrost_drm_create_bo(screen, bo_size, 0);
 394 }
 395
 396 static struct pipe_resource *
 397 panfrost_resource_create(struct pipe_screen *screen,
 398                          const struct pipe_resource *template)
 399 {
 400         /* Make sure we're familiar */
 401         switch (template->target) {
 402         case PIPE_BUFFER:
 403         case PIPE_TEXTURE_1D:
 404         case PIPE_TEXTURE_2D:
 405         case PIPE_TEXTURE_3D:
 406         case PIPE_TEXTURE_CUBE:
 407         case PIPE_TEXTURE_RECT:
 408         case PIPE_TEXTURE_2D_ARRAY:
 409                 break;
 410         default:
 411                 DBG("Unknown texture target %d\n", template->target);
 412                 assert(0);
 413         }
 414
 415         if (template->bind &
 416             (PIPE_BIND_DISPLAY_TARGET | PIPE_BIND_SCANOUT | PIPE_BIND_SHARED))
 417                 return panfrost_create_scanout_res(screen, template);
 418
 419         struct panfrost_resource *so = rzalloc(screen, struct panfrost_resource);
 420         struct panfrost_screen *pscreen = (struct panfrost_screen *) screen;
 421
 422         so->base = *template;
 423         so->base.screen = screen;
 424
 425         pipe_reference_init(&so->base.reference, 1);
 426
 427         util_range_init(&so->valid_buffer_range);
 428
 429         panfrost_resource_create_bo(pscreen, so);
 430         return (struct pipe_resource *)so;
 431 }
 432
 433 void
 434 panfrost_bo_reference(struct panfrost_bo *bo)
 435 {
 436         pipe_reference(NULL, &bo->reference);
 437 }
 438
 439 void
 440 panfrost_bo_unreference(struct pipe_screen *screen, struct panfrost_bo *bo)
 441 {
 442         /* When the reference count goes to zero, we need to cleanup */
 443
 444         if (pipe_reference(&bo->reference, NULL))
 445                 panfrost_drm_release_bo(pan_screen(screen), bo);
 446 }
 447
 448 static void
 449 panfrost_resource_destroy(struct pipe_screen *screen,
 450                           struct pipe_resource *pt)
 451 {
 452         struct panfrost_screen *pscreen = pan_screen(screen);
 453         struct panfrost_resource *rsrc = (struct panfrost_resource *) pt;
 454
 455         if (rsrc->scanout)
 456                 renderonly_scanout_destroy(rsrc->scanout, pscreen->ro);
 457
 458         if (rsrc->bo)
 459                 panfrost_bo_unreference(screen, rsrc->bo);
 460
 461         util_range_destroy(&rsrc->valid_buffer_range);
 462         ralloc_free(rsrc);
 463 }
 464
 465 static void *
 466 panfrost_transfer_map(struct pipe_context *pctx,
 467                       struct pipe_resource *resource,
 468                       unsigned level,
 469                       unsigned usage,  /* a combination of PIPE_TRANSFER_x */
 470                       const struct pipe_box *box,
 471                       struct pipe_transfer **out_transfer)
 472 {
 473         int bytes_per_pixel = util_format_get_blocksize(resource->format);
 474         struct panfrost_resource *rsrc = pan_resource(resource);
 475         struct panfrost_bo *bo = rsrc->bo;
 476
 477         struct panfrost_gtransfer *transfer = rzalloc(pctx, struct panfrost_gtransfer);
 478         transfer->base.level = level;
 479         transfer->base.usage = usage;
 480         transfer->base.box = *box;
 481
 482         pipe_resource_reference(&transfer->base.resource, resource);
 483
 484         *out_transfer = &transfer->base;
 485
 486         /* Check if we're bound for rendering and this is a read pixels. If so,
 487          * we need to flush */
 488
 489         struct panfrost_context *ctx = pan_context(pctx);
 490         struct pipe_framebuffer_state *fb = &ctx->pipe_framebuffer;
 491
 492         bool is_bound = false;
 493
 494         for (unsigned c = 0; c < fb->nr_cbufs; ++c) {
 495                 is_bound |= fb->cbufs[c]->texture == resource;
 496         }
 497
 498         if (is_bound && (usage & PIPE_TRANSFER_READ)) {
 499                 assert(level == 0);
 500                 panfrost_flush(pctx, NULL, PIPE_FLUSH_END_OF_FRAME);
 501         }
 502
 503         /* TODO: Respect usage flags */
 504
 505         if (usage & PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE) {
 506                 /* TODO: reallocate */
 507                 //printf("debug: Missed reallocate\n");
 508         } else if ((usage & PIPE_TRANSFER_WRITE)
 509                    && resource->target == PIPE_BUFFER
 510                    && !util_ranges_intersect(&rsrc->valid_buffer_range, box->x, box->x + box->width)) {
 511                 /* No flush for writes to uninitialized */
 512         } else if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
 513                 if (usage & PIPE_TRANSFER_WRITE) {
 514                         /* STUB: flush reading */
 515                         //printf("debug: missed reading flush %d\n", resource->target);
 516                 } else if (usage & PIPE_TRANSFER_READ) {
 517                         /* STUB: flush writing */
 518                         //printf("debug: missed writing flush %d (%d-%d)\n", resource->target, box->x, box->x + box->width);
 519                 } else {
 520                         /* Why are you even mapping?! */
 521                 }
 522         }
 523
 524         if (rsrc->layout != PAN_LINEAR) {
 525                 /* Non-linear resources need to be indirectly mapped */
 526
 527                 if (usage & PIPE_TRANSFER_MAP_DIRECTLY)
 528                         return NULL;
 529
 530                 transfer->base.stride = box->width * bytes_per_pixel;
 531                 transfer->base.layer_stride = transfer->base.stride * box->height;
 532                 transfer->map = rzalloc_size(transfer, transfer->base.layer_stride * box->depth);
 533                 assert(box->depth == 1);
 534
 535                 if ((usage & PIPE_TRANSFER_READ) && rsrc->slices[level].initialized) {
 536                         if (rsrc->layout == PAN_AFBC) {
 537                                 DBG("Unimplemented: reads from AFBC");
 538                         } else if (rsrc->layout == PAN_TILED) {
 539                                 panfrost_load_tiled_image(
 540                                         transfer->map,
 541                                         bo->cpu + rsrc->slices[level].offset,
 542                                         box,
 543                                         transfer->base.stride,
 544                                         rsrc->slices[level].stride,
 545                                         util_format_get_blocksize(resource->format));
 546                         }
 547                 }
 548
 549                 return transfer->map;
 550         } else {
 551                 transfer->base.stride = rsrc->slices[level].stride;
 552                 transfer->base.layer_stride = rsrc->cubemap_stride;
 553
 554                 /* By mapping direct-write, we're implicitly already
 555                  * initialized (maybe), so be conservative */
 556
 557                 if ((usage & PIPE_TRANSFER_WRITE) && (usage & PIPE_TRANSFER_MAP_DIRECTLY))
 558                         rsrc->slices[level].initialized = true;
 559
 560                 return bo->cpu
 561                        + rsrc->slices[level].offset
 562                        + transfer->base.box.z * rsrc->cubemap_stride
 563                        + transfer->base.box.y * rsrc->slices[level].stride
 564                        + transfer->base.box.x * bytes_per_pixel;
 565         }
 566 }
 567
 568 static void
 569 panfrost_transfer_unmap(struct pipe_context *pctx,
 570                         struct pipe_transfer *transfer)
 571 {
 572         /* Gallium expects writeback here, so we tile */
 573
 574         struct panfrost_gtransfer *trans = pan_transfer(transfer);
 575         struct panfrost_resource *prsrc = (struct panfrost_resource *) transfer->resource;
 576
 577         if (trans->map) {
 578                 struct panfrost_bo *bo = prsrc->bo;
 579
 580                 if (transfer->usage & PIPE_TRANSFER_WRITE) {
 581                         unsigned level = transfer->level;
 582                         prsrc->slices[level].initialized = true;
 583
 584                         if (prsrc->layout == PAN_AFBC) {
 585                                 DBG("Unimplemented: writes to AFBC\n");
 586                         } else if (prsrc->layout == PAN_TILED) {
 587                                 assert(transfer->box.depth == 1);
 588
 589                                 panfrost_store_tiled_image(
 590                                         bo->cpu + prsrc->slices[level].offset,
 591                                         trans->map,
 592                                         &transfer->box,
 593                                         prsrc->slices[level].stride,
 594                                         transfer->stride,
 595                                         util_format_get_blocksize(prsrc->base.format));
 596                         }
 597                 }
 598         }
 599
 600
 601         util_range_add(&prsrc->valid_buffer_range,
 602                        transfer->box.x,
 603                        transfer->box.x + transfer->box.width);
 604
 605         /* Derefence the resource */
 606         pipe_resource_reference(&transfer->resource, NULL);
 607
 608         /* Transfer itself is RALLOCed at the moment */
 609         ralloc_free(transfer);
 610 }
 611
 612 static void
 613 panfrost_transfer_flush_region(struct pipe_context *pctx,
 614                                struct pipe_transfer *transfer,
 615                                const struct pipe_box *box)
 616 {
 617         struct panfrost_resource *rsc = pan_resource(transfer->resource);
 618
 619         if (transfer->resource->target == PIPE_BUFFER) {
 620                 util_range_add(&rsc->valid_buffer_range,
 621                                transfer->box.x + box->x,
 622                                transfer->box.x + box->x + box->width);
 623         }
 624 }
 625
 626 static struct pb_slab *
 627 panfrost_slab_alloc(void *priv, unsigned heap, unsigned entry_size, unsigned group_index)
 628 {
 629         struct panfrost_screen *screen = (struct panfrost_screen *) priv;
 630         struct panfrost_memory *mem = rzalloc(screen, struct panfrost_memory);
 631
 632         size_t slab_size = (1 << (MAX_SLAB_ENTRY_SIZE + 1));
 633
 634         mem->slab.num_entries = slab_size / entry_size;
 635         mem->slab.num_free = mem->slab.num_entries;
 636
 637         LIST_INITHEAD(&mem->slab.free);
 638         for (unsigned i = 0; i < mem->slab.num_entries; ++i) {
 639                 /* Create a slab entry */
 640                 struct panfrost_memory_entry *entry = rzalloc(mem, struct panfrost_memory_entry);
 641                 entry->offset = entry_size * i;
 642
 643                 entry->base.slab = &mem->slab;
 644                 entry->base.group_index = group_index;
 645
 646                 LIST_ADDTAIL(&entry->base.head, &mem->slab.free);
 647         }
 648
 649         /* Actually allocate the memory from kernel-space. Mapped, same_va, no
 650          * special flags */
 651
 652         panfrost_drm_allocate_slab(screen, mem, slab_size / 4096, true, 0, 0, 0);
 653
 654         return &mem->slab;
 655 }
 656
 657 static bool
 658 panfrost_slab_can_reclaim(void *priv, struct pb_slab_entry *entry)
 659 {
 660         struct panfrost_memory_entry *p_entry = (struct panfrost_memory_entry *) entry;
 661         return p_entry->freed;
 662 }
 663
 664 static void
 665 panfrost_slab_free(void *priv, struct pb_slab *slab)
 666 {
 667         struct panfrost_memory *mem = (struct panfrost_memory *) slab;
 668         struct panfrost_screen *screen = (struct panfrost_screen *) priv;
 669
 670         panfrost_drm_free_slab(screen, mem);
 671         ralloc_free(mem);
 672 }
 673
 674 static void
 675 panfrost_invalidate_resource(struct pipe_context *pctx, struct pipe_resource *prsc)
 676 {
 677         //DBG("TODO %s\n", __func__);
 678 }
 679
 680 static enum pipe_format
 681 panfrost_resource_get_internal_format(struct pipe_resource *prsrc) {
 682         return prsrc->format;
 683 }
 684
 685 static boolean
 686 panfrost_generate_mipmap(
 687         struct pipe_context *pctx,
 688         struct pipe_resource *prsrc,
 689         enum pipe_format format,
 690         unsigned base_level,
 691         unsigned last_level,
 692         unsigned first_layer,
 693         unsigned last_layer)
 694 {
 695         struct panfrost_context *ctx = pan_context(pctx);
 696         struct panfrost_resource *rsrc = pan_resource(prsrc);
 697
 698         /* Generating a mipmap invalidates the written levels, so make that
 699          * explicit so we don't try to wallpaper them back and end up with
 700          * u_blitter recursion */
 701
 702         assert(rsrc->bo);
 703         for (unsigned l = base_level + 1; l <= last_level; ++l)
 704                 rsrc->slices[l].initialized = false;
 705
 706         /* Beyond that, we just delegate the hard stuff. We're careful to
 707          * include flushes on both ends to make sure the data is really valid.
 708          * We could be doing a lot better perf-wise, especially once we have
 709          * reorder-type optimizations in place. But for now prioritize
 710          * correctness. */
 711
 712         struct panfrost_job *job = panfrost_get_job_for_fbo(ctx);
 713         bool has_draws = job->last_job.gpu;
 714
 715         if (has_draws)
 716                 panfrost_flush(pctx, NULL, PIPE_FLUSH_END_OF_FRAME);
 717
 718         /* We've flushed the original buffer if needed, now trigger a blit */
 719
 720         bool blit_res = util_gen_mipmap(
 721                                 pctx, prsrc, format,
 722                                 base_level, last_level,
 723                                 first_layer, last_layer,
 724                                 PIPE_TEX_FILTER_LINEAR);
 725
 726         /* If the blit was successful, flush once more. If it wasn't, well, let
 727          * the state tracker deal with it. */
 728
 729         if (blit_res)
 730                 panfrost_flush(pctx, NULL, PIPE_FLUSH_END_OF_FRAME);
 731
 732         return blit_res;
 733 }
 734
 735 /* Computes the address to a texture at a particular slice */
 736
 737 mali_ptr
 738 panfrost_get_texture_address(
 739         struct panfrost_resource *rsrc,
 740         unsigned level, unsigned face)
 741 {
 742         unsigned level_offset = rsrc->slices[level].offset;
 743         unsigned face_offset = face * rsrc->cubemap_stride;
 744
 745         return rsrc->bo->gpu + level_offset + face_offset;
 746 }
 747
 748 static void
 749 panfrost_resource_set_stencil(struct pipe_resource *prsrc,
 750                               struct pipe_resource *stencil)
 751 {
 752         pan_resource(prsrc)->separate_stencil = pan_resource(stencil);
 753 }
 754
 755 static struct pipe_resource *
 756 panfrost_resource_get_stencil(struct pipe_resource *prsrc)
 757 {
 758         return &pan_resource(prsrc)->separate_stencil->base;
 759 }
 760
 761 static const struct u_transfer_vtbl transfer_vtbl = {
 762         .resource_create          = panfrost_resource_create,
 763         .resource_destroy         = panfrost_resource_destroy,
 764         .transfer_map             = panfrost_transfer_map,
 765         .transfer_unmap           = panfrost_transfer_unmap,
 766         .transfer_flush_region    = panfrost_transfer_flush_region,
 767         .get_internal_format      = panfrost_resource_get_internal_format,
 768         .set_stencil              = panfrost_resource_set_stencil,
 769         .get_stencil              = panfrost_resource_get_stencil,
 770 };
 771
 772 void
 773 panfrost_resource_screen_init(struct panfrost_screen *pscreen)
 774 {
 775         //pscreen->base.resource_create_with_modifiers =
 776         //        panfrost_resource_create_with_modifiers;
 777         pscreen->base.resource_create = u_transfer_helper_resource_create;
 778         pscreen->base.resource_destroy = u_transfer_helper_resource_destroy;
 779         pscreen->base.resource_from_handle = panfrost_resource_from_handle;
 780         pscreen->base.resource_get_handle = panfrost_resource_get_handle;
 781         pscreen->base.transfer_helper = u_transfer_helper_create(&transfer_vtbl,
 782                                         true, false,
 783                                         true, true);
 784
 785         pb_slabs_init(&pscreen->slabs,
 786                       MIN_SLAB_ENTRY_SIZE,
 787                       MAX_SLAB_ENTRY_SIZE,
 788
 789                       3, /* Number of heaps */
 790
 791                       pscreen,
 792
 793                       panfrost_slab_can_reclaim,
 794                       panfrost_slab_alloc,
 795                       panfrost_slab_free);
 796 }
 797
 798 void
 799 panfrost_resource_screen_deinit(struct panfrost_screen *pscreen)
 800 {
 801         pb_slabs_deinit(&pscreen->slabs);
 802 }
 803
 804 void
 805 panfrost_resource_context_init(struct pipe_context *pctx)
 806 {
 807         pctx->transfer_map = u_transfer_helper_transfer_map;
 808         pctx->transfer_flush_region = u_transfer_helper_transfer_flush_region;
 809         pctx->transfer_unmap = u_transfer_helper_transfer_unmap;
 810         pctx->buffer_subdata = u_default_buffer_subdata;
 811         pctx->create_surface = panfrost_create_surface;
 812         pctx->surface_destroy = panfrost_surface_destroy;
 813         pctx->resource_copy_region = util_resource_copy_region;
 814         pctx->blit = panfrost_blit;
 815         pctx->generate_mipmap = panfrost_generate_mipmap;
 816         pctx->flush_resource = panfrost_flush_resource;
 817         pctx->invalidate_resource = panfrost_invalidate_resource;
 818         pctx->transfer_flush_region = u_transfer_helper_transfer_flush_region;
 819         pctx->buffer_subdata = u_default_buffer_subdata;
 820         pctx->texture_subdata = u_default_texture_subdata;
 821 }