src/gallium/drivers/lima/lima_resource.c

   1 /*
   2  * Copyright (c) 2017-2019 Lima Project
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the
  12  * next paragraph) shall be included in all copies or substantial portions
  13  * of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  *
  23  */
  24
  25 #include "util/u_memory.h"
  26 #include "util/u_blitter.h"
  27 #include "util/format/u_format.h"
  28 #include "util/u_inlines.h"
  29 #include "util/u_math.h"
  30 #include "util/u_debug.h"
  31 #include "util/u_transfer.h"
  32 #include "util/u_surface.h"
  33 #include "util/hash_table.h"
  34 #include "util/u_drm.h"
  35 #include "renderonly/renderonly.h"
  36
  37 #include "state_tracker/drm_driver.h"
  38
  39 #include "drm-uapi/drm_fourcc.h"
  40 #include "drm-uapi/lima_drm.h"
  41
  42 #include "lima_screen.h"
  43 #include "lima_context.h"
  44 #include "lima_resource.h"
  45 #include "lima_bo.h"
  46 #include "lima_util.h"
  47 #include "pan_tiling.h"
  48
  49 static struct pipe_resource *
  50 lima_resource_create_scanout(struct pipe_screen *pscreen,
  51                              const struct pipe_resource *templat,
  52                              unsigned width, unsigned height)
  53 {
  54    struct lima_screen *screen = lima_screen(pscreen);
  55    struct renderonly_scanout *scanout;
  56    struct winsys_handle handle;
  57    struct pipe_resource *pres;
  58
  59    struct pipe_resource scanout_templat = *templat;
  60    scanout_templat.width0 = width;
  61    scanout_templat.height0 = height;
  62    scanout_templat.screen = pscreen;
  63
  64    scanout = renderonly_scanout_for_resource(&scanout_templat,
  65                                              screen->ro, &handle);
  66    if (!scanout)
  67       return NULL;
  68
  69    assert(handle.type == WINSYS_HANDLE_TYPE_FD);
  70    pres = pscreen->resource_from_handle(pscreen, templat, &handle,
  71                                         PIPE_HANDLE_USAGE_FRAMEBUFFER_WRITE);
  72
  73    close(handle.handle);
  74    if (!pres) {
  75       renderonly_scanout_destroy(scanout, screen->ro);
  76       return NULL;
  77    }
  78
  79    struct lima_resource *res = lima_resource(pres);
  80    res->scanout = scanout;
  81
  82    return pres;
  83 }
  84
  85 static uint32_t
  86 setup_miptree(struct lima_resource *res,
  87               unsigned width0, unsigned height0,
  88               bool should_align_dimensions)
  89 {
  90    struct pipe_resource *pres = &res->base;
  91    unsigned level;
  92    unsigned width = width0;
  93    unsigned height = height0;
  94    unsigned depth = pres->depth0;
  95    uint32_t size = 0;
  96
  97    for (level = 0; level <= pres->last_level; level++) {
  98       uint32_t actual_level_size;
  99       uint32_t stride;
 100       unsigned aligned_width;
 101       unsigned aligned_height;
 102
 103       if (should_align_dimensions) {
 104          aligned_width = align(width, 16);
 105          aligned_height = align(height, 16);
 106       } else {
 107          aligned_width = width;
 108          aligned_height = height;
 109       }
 110
 111       stride = util_format_get_stride(pres->format, aligned_width);
 112       actual_level_size = stride *
 113          util_format_get_nblocksy(pres->format, aligned_height) *
 114          pres->array_size * depth;
 115
 116       res->levels[level].width = aligned_width;
 117       res->levels[level].stride = stride;
 118       res->levels[level].offset = size;
 119       res->levels[level].layer_stride = util_format_get_stride(pres->format, align(width, 16)) * align(height, 16);
 120
 121       /* The start address of each level <= 10 must be 64-aligned
 122        * in order to be able to pass the addresses
 123        * to the hardware.
 124        * The start addresses of level 11 and level 12 are passed
 125        * implicitely: they start at an offset of respectively
 126        * 0x0400 and 0x0800 from the start address of level 10 */
 127       if (level < 10)
 128          size += align(actual_level_size, 64);
 129       else if (level != pres->last_level)
 130          size += 0x0400;
 131       else
 132          size += actual_level_size;  /* Save some memory */
 133
 134       width = u_minify(width, 1);
 135       height = u_minify(height, 1);
 136       depth = u_minify(depth, 1);
 137    }
 138
 139    return size;
 140 }
 141
 142 static struct pipe_resource *
 143 lima_resource_create_bo(struct pipe_screen *pscreen,
 144                         const struct pipe_resource *templat,
 145                         unsigned width, unsigned height,
 146                         bool should_align_dimensions)
 147 {
 148    struct lima_screen *screen = lima_screen(pscreen);
 149    struct lima_resource *res;
 150    struct pipe_resource *pres;
 151
 152    res = CALLOC_STRUCT(lima_resource);
 153    if (!res)
 154       return NULL;
 155
 156    res->base = *templat;
 157    res->base.screen = pscreen;
 158    pipe_reference_init(&res->base.reference, 1);
 159
 160    pres = &res->base;
 161
 162    uint32_t size = setup_miptree(res, width, height, should_align_dimensions);
 163    size = align(size, LIMA_PAGE_SIZE);
 164
 165    res->bo = lima_bo_create(screen, size, 0);
 166    if (!res->bo) {
 167       FREE(res);
 168       return NULL;
 169    }
 170
 171    return pres;
 172 }
 173
 174 static struct pipe_resource *
 175 _lima_resource_create_with_modifiers(struct pipe_screen *pscreen,
 176                                      const struct pipe_resource *templat,
 177                                      const uint64_t *modifiers,
 178                                      int count)
 179 {
 180    struct lima_screen *screen = lima_screen(pscreen);
 181    bool should_tile = true;
 182    unsigned width, height;
 183    bool should_align_dimensions;
 184    bool has_user_modifiers = true;
 185
 186    if (count == 1 && modifiers[0] == DRM_FORMAT_MOD_INVALID)
 187       has_user_modifiers = false;
 188
 189    /* VBOs/PBOs are untiled (and 1 height). */
 190    if (templat->target == PIPE_BUFFER)
 191       should_tile = false;
 192
 193    if (templat->bind & (PIPE_BIND_LINEAR | PIPE_BIND_SCANOUT))
 194       should_tile = false;
 195
 196    if (drm_find_modifier(DRM_FORMAT_MOD_LINEAR, modifiers, count))
 197       should_tile = false;
 198
 199    if (has_user_modifiers &&
 200       !drm_find_modifier(DRM_FORMAT_MOD_ARM_16X16_BLOCK_U_INTERLEAVED,
 201                          modifiers, count))
 202       should_tile = false;
 203
 204    if (should_tile || (templat->bind & PIPE_BIND_RENDER_TARGET) ||
 205        (templat->bind & PIPE_BIND_DEPTH_STENCIL)) {
 206       should_align_dimensions = true;
 207       width = align(templat->width0, 16);
 208       height = align(templat->height0, 16);
 209    }
 210    else {
 211       should_align_dimensions = false;
 212       width = templat->width0;
 213       height = templat->height0;
 214    }
 215
 216    struct pipe_resource *pres;
 217    if (screen->ro && (templat->bind & PIPE_BIND_SCANOUT))
 218       pres = lima_resource_create_scanout(pscreen, templat, width, height);
 219    else
 220       pres = lima_resource_create_bo(pscreen, templat, width, height,
 221                                      should_align_dimensions);
 222
 223    if (pres) {
 224       struct lima_resource *res = lima_resource(pres);
 225       res->tiled = should_tile;
 226
 227       debug_printf("%s: pres=%p width=%u height=%u depth=%u target=%d "
 228                    "bind=%x usage=%d tile=%d last_level=%d\n", __func__,
 229                    pres, pres->width0, pres->height0, pres->depth0,
 230                    pres->target, pres->bind, pres->usage, should_tile, templat->last_level);
 231    }
 232    return pres;
 233 }
 234
 235 static struct pipe_resource *
 236 lima_resource_create(struct pipe_screen *pscreen,
 237                      const struct pipe_resource *templat)
 238 {
 239    const uint64_t mod = DRM_FORMAT_MOD_INVALID;
 240
 241    return _lima_resource_create_with_modifiers(pscreen, templat, &mod, 1);
 242 }
 243
 244 static struct pipe_resource *
 245 lima_resource_create_with_modifiers(struct pipe_screen *pscreen,
 246                                     const struct pipe_resource *templat,
 247                                     const uint64_t *modifiers,
 248                                     int count)
 249 {
 250    struct pipe_resource tmpl = *templat;
 251
 252    /* gbm_bo_create_with_modifiers & gbm_surface_create_with_modifiers
 253     * don't have usage parameter, but buffer created by these functions
 254     * may be used for scanout. So we assume buffer created by this
 255     * function always enable scanout if linear modifier is permitted.
 256     */
 257    if (drm_find_modifier(DRM_FORMAT_MOD_LINEAR, modifiers, count))
 258       tmpl.bind |= PIPE_BIND_SCANOUT;
 259
 260    return _lima_resource_create_with_modifiers(pscreen, &tmpl, modifiers, count);
 261 }
 262
 263 static void
 264 lima_resource_destroy(struct pipe_screen *pscreen, struct pipe_resource *pres)
 265 {
 266    struct lima_screen *screen = lima_screen(pscreen);
 267    struct lima_resource *res = lima_resource(pres);
 268
 269    if (res->bo)
 270       lima_bo_unreference(res->bo);
 271
 272    if (res->scanout)
 273       renderonly_scanout_destroy(res->scanout, screen->ro);
 274
 275    if (res->damage.region)
 276       FREE(res->damage.region);
 277
 278    FREE(res);
 279 }
 280
 281 static struct pipe_resource *
 282 lima_resource_from_handle(struct pipe_screen *pscreen,
 283         const struct pipe_resource *templat,
 284         struct winsys_handle *handle, unsigned usage)
 285 {
 286    struct lima_resource *res;
 287    struct lima_screen *screen = lima_screen(pscreen);
 288
 289    res = CALLOC_STRUCT(lima_resource);
 290    if (!res)
 291       return NULL;
 292
 293    struct pipe_resource *pres = &res->base;
 294    *pres = *templat;
 295    pres->screen = pscreen;
 296    pipe_reference_init(&pres->reference, 1);
 297    res->levels[0].offset = 0;
 298    res->levels[0].stride = handle->stride;
 299
 300    res->bo = lima_bo_import(screen, handle);
 301    if (!res->bo) {
 302       FREE(res);
 303       return NULL;
 304    }
 305
 306    /* check alignment for the buffer */
 307    if (pres->bind & PIPE_BIND_RENDER_TARGET) {
 308       unsigned width, height, stride, size;
 309
 310       width = align(pres->width0, 16);
 311       height = align(pres->height0, 16);
 312       stride = util_format_get_stride(pres->format, width);
 313       size = util_format_get_2d_size(pres->format, stride, height);
 314
 315       if (res->levels[0].stride != stride || res->bo->size < size) {
 316          debug_error("import buffer not properly aligned\n");
 317          goto err_out;
 318       }
 319
 320       res->levels[0].width = width;
 321    }
 322    else
 323       res->levels[0].width = pres->width0;
 324
 325    switch (handle->modifier) {
 326    case DRM_FORMAT_MOD_LINEAR:
 327       res->tiled = false;
 328       break;
 329    case DRM_FORMAT_MOD_ARM_16X16_BLOCK_U_INTERLEAVED:
 330       res->tiled = true;
 331       break;
 332    default:
 333       fprintf(stderr, "Attempted to import unsupported modifier 0x%llx\n",
 334                   (long long)handle->modifier);
 335    }
 336
 337    return pres;
 338
 339 err_out:
 340    lima_resource_destroy(pscreen, pres);
 341    return NULL;
 342 }
 343
 344 static bool
 345 lima_resource_get_handle(struct pipe_screen *pscreen,
 346                          struct pipe_context *pctx,
 347                          struct pipe_resource *pres,
 348                          struct winsys_handle *handle, unsigned usage)
 349 {
 350    struct lima_screen *screen = lima_screen(pscreen);
 351    struct lima_resource *res = lima_resource(pres);
 352
 353    if (res->tiled)
 354       handle->modifier = DRM_FORMAT_MOD_ARM_16X16_BLOCK_U_INTERLEAVED;
 355    else
 356       handle->modifier = DRM_FORMAT_MOD_LINEAR;
 357
 358    if (handle->type == WINSYS_HANDLE_TYPE_KMS && screen->ro &&
 359        renderonly_get_handle(res->scanout, handle))
 360       return true;
 361
 362    if (!lima_bo_export(res->bo, handle))
 363       return false;
 364
 365    handle->stride = res->levels[0].stride;
 366    return true;
 367 }
 368
 369 static void
 370 get_scissor_from_box(struct pipe_scissor_state *s,
 371                      const struct pipe_box *b, int h)
 372 {
 373    int y = h - (b->y + b->height);
 374    /* region in tile unit */
 375    s->minx = b->x >> 4;
 376    s->miny = y >> 4;
 377    s->maxx = (b->x + b->width + 0xf) >> 4;
 378    s->maxy = (y + b->height + 0xf) >> 4;
 379 }
 380
 381 static void
 382 get_damage_bound_box(struct pipe_resource *pres,
 383                      const struct pipe_box *rects,
 384                      unsigned int nrects,
 385                      struct pipe_scissor_state *bound)
 386 {
 387    struct pipe_box b = rects[0];
 388
 389    for (int i = 1; i < nrects; i++)
 390       u_box_union_2d(&b, &b, rects + i);
 391
 392    int ret = u_box_clip_2d(&b, &b, pres->width0, pres->height0);
 393    if (ret < 0)
 394       memset(bound, 0, sizeof(*bound));
 395    else
 396       get_scissor_from_box(bound, &b, pres->height0);
 397 }
 398
 399 static void
 400 lima_resource_set_damage_region(struct pipe_screen *pscreen,
 401                                 struct pipe_resource *pres,
 402                                 unsigned int nrects,
 403                                 const struct pipe_box *rects)
 404 {
 405    struct lima_resource *res = lima_resource(pres);
 406    struct lima_damage_region *damage = &res->damage;
 407    int i;
 408
 409    if (damage->region) {
 410       FREE(damage->region);
 411       damage->region = NULL;
 412       damage->num_region = 0;
 413    }
 414
 415    if (!nrects)
 416       return;
 417
 418    /* check full damage
 419     *
 420     * TODO: currently only check if there is any single damage
 421     * region that can cover the full render target; there may
 422     * be some accurate way, but a single window size damage
 423     * region is most of the case from weston
 424     */
 425    for (i = 0; i < nrects; i++) {
 426       if (rects[i].x <= 0 && rects[i].y <= 0 &&
 427           rects[i].x + rects[i].width >= pres->width0 &&
 428           rects[i].y + rects[i].height >= pres->height0)
 429          return;
 430    }
 431
 432    struct pipe_scissor_state *bound = &damage->bound;
 433    get_damage_bound_box(pres, rects, nrects, bound);
 434
 435    damage->region = CALLOC(nrects, sizeof(*damage->region));
 436    if (!damage->region)
 437       return;
 438
 439    for (i = 0; i < nrects; i++)
 440       get_scissor_from_box(damage->region + i, rects + i,
 441                            pres->height0);
 442
 443    /* is region aligned to tiles? */
 444    damage->aligned = true;
 445    for (i = 0; i < nrects; i++) {
 446       if (rects[i].x & 0xf || rects[i].y & 0xf ||
 447           rects[i].width & 0xf || rects[i].height & 0xf) {
 448          damage->aligned = false;
 449          break;
 450       }
 451    }
 452
 453    damage->num_region = nrects;
 454 }
 455
 456 void
 457 lima_resource_screen_init(struct lima_screen *screen)
 458 {
 459    screen->base.resource_create = lima_resource_create;
 460    screen->base.resource_create_with_modifiers = lima_resource_create_with_modifiers;
 461    screen->base.resource_from_handle = lima_resource_from_handle;
 462    screen->base.resource_destroy = lima_resource_destroy;
 463    screen->base.resource_get_handle = lima_resource_get_handle;
 464    screen->base.set_damage_region = lima_resource_set_damage_region;
 465 }
 466
 467 static struct pipe_surface *
 468 lima_surface_create(struct pipe_context *pctx,
 469                     struct pipe_resource *pres,
 470                     const struct pipe_surface *surf_tmpl)
 471 {
 472    struct lima_surface *surf = CALLOC_STRUCT(lima_surface);
 473
 474    if (!surf)
 475       return NULL;
 476
 477    assert(surf_tmpl->u.tex.first_layer == surf_tmpl->u.tex.last_layer);
 478
 479    struct pipe_surface *psurf = &surf->base;
 480    unsigned level = surf_tmpl->u.tex.level;
 481
 482    pipe_reference_init(&psurf->reference, 1);
 483    pipe_resource_reference(&psurf->texture, pres);
 484
 485    psurf->context = pctx;
 486    psurf->format = surf_tmpl->format;
 487    psurf->width = u_minify(pres->width0, level);
 488    psurf->height = u_minify(pres->height0, level);
 489    psurf->u.tex.level = level;
 490    psurf->u.tex.first_layer = surf_tmpl->u.tex.first_layer;
 491    psurf->u.tex.last_layer = surf_tmpl->u.tex.last_layer;
 492
 493    surf->tiled_w = align(psurf->width, 16) >> 4;
 494    surf->tiled_h = align(psurf->height, 16) >> 4;
 495
 496    surf->reload = true;
 497
 498    struct lima_context *ctx = lima_context(pctx);
 499    if (ctx->plb_pp_stream) {
 500       struct lima_ctx_plb_pp_stream_key key = {
 501          .tiled_w = surf->tiled_w,
 502          .tiled_h = surf->tiled_h,
 503       };
 504
 505       for (int i = 0; i < lima_ctx_num_plb; i++) {
 506          key.plb_index = i;
 507
 508          struct hash_entry *entry =
 509             _mesa_hash_table_search(ctx->plb_pp_stream, &key);
 510          if (entry) {
 511             struct lima_ctx_plb_pp_stream *s = entry->data;
 512             s->refcnt++;
 513          }
 514          else {
 515             struct lima_ctx_plb_pp_stream *s =
 516                ralloc(ctx->plb_pp_stream, struct lima_ctx_plb_pp_stream);
 517             s->key.plb_index = i;
 518             s->key.tiled_w = surf->tiled_w;
 519             s->key.tiled_h = surf->tiled_h;
 520             s->refcnt = 1;
 521             s->bo = NULL;
 522             _mesa_hash_table_insert(ctx->plb_pp_stream, &s->key, s);
 523          }
 524       }
 525    }
 526
 527    return &surf->base;
 528 }
 529
 530 static void
 531 lima_surface_destroy(struct pipe_context *pctx, struct pipe_surface *psurf)
 532 {
 533    struct lima_surface *surf = lima_surface(psurf);
 534    /* psurf->context may be not equal with pctx (i.e. glxinfo) */
 535    struct lima_context *ctx = lima_context(psurf->context);
 536
 537    if (ctx->plb_pp_stream) {
 538       struct lima_ctx_plb_pp_stream_key key = {
 539          .tiled_w = surf->tiled_w,
 540          .tiled_h = surf->tiled_h,
 541       };
 542
 543       for (int i = 0; i < lima_ctx_num_plb; i++) {
 544          key.plb_index = i;
 545
 546          struct hash_entry *entry =
 547             _mesa_hash_table_search(ctx->plb_pp_stream, &key);
 548          struct lima_ctx_plb_pp_stream *s = entry->data;
 549          if (--s->refcnt == 0) {
 550             if (s->bo)
 551                lima_bo_unreference(s->bo);
 552             _mesa_hash_table_remove(ctx->plb_pp_stream, entry);
 553             ralloc_free(s);
 554          }
 555       }
 556    }
 557
 558    pipe_resource_reference(&psurf->texture, NULL);
 559    FREE(surf);
 560 }
 561
 562 static void *
 563 lima_transfer_map(struct pipe_context *pctx,
 564                   struct pipe_resource *pres,
 565                   unsigned level,
 566                   unsigned usage,
 567                   const struct pipe_box *box,
 568                   struct pipe_transfer **pptrans)
 569 {
 570    struct lima_context *ctx = lima_context(pctx);
 571    struct lima_resource *res = lima_resource(pres);
 572    struct lima_bo *bo = res->bo;
 573    struct lima_transfer *trans;
 574    struct pipe_transfer *ptrans;
 575
 576    /* No direct mappings of tiled, since we need to manually
 577     * tile/untile.
 578     */
 579    if (res->tiled && (usage & PIPE_TRANSFER_MAP_DIRECTLY))
 580       return NULL;
 581
 582    /* use once buffers are made sure to not read/write overlapped
 583     * range, so no need to sync */
 584    if (pres->usage != PIPE_USAGE_STREAM) {
 585       if (usage & PIPE_TRANSFER_READ_WRITE) {
 586          if (lima_need_flush(ctx, bo, usage & PIPE_TRANSFER_WRITE))
 587             lima_flush(ctx);
 588
 589          unsigned op = usage & PIPE_TRANSFER_WRITE ?
 590             LIMA_GEM_WAIT_WRITE : LIMA_GEM_WAIT_READ;
 591          lima_bo_wait(bo, op, PIPE_TIMEOUT_INFINITE);
 592       }
 593    }
 594
 595    if (!lima_bo_map(bo))
 596       return NULL;
 597
 598    trans = slab_alloc(&ctx->transfer_pool);
 599    if (!trans)
 600       return NULL;
 601
 602    memset(trans, 0, sizeof(*trans));
 603    ptrans = &trans->base;
 604
 605    pipe_resource_reference(&ptrans->resource, pres);
 606    ptrans->level = level;
 607    ptrans->usage = usage;
 608    ptrans->box = *box;
 609
 610    *pptrans = ptrans;
 611
 612    if (res->tiled) {
 613       ptrans->stride = util_format_get_stride(pres->format, ptrans->box.width);
 614       ptrans->layer_stride = ptrans->stride * ptrans->box.height;
 615
 616       trans->staging = malloc(ptrans->stride * ptrans->box.height * ptrans->box.depth);
 617
 618       if (usage & PIPE_TRANSFER_READ) {
 619          unsigned i;
 620          for (i = 0; i < ptrans->box.depth; i++)
 621             panfrost_load_tiled_image(
 622                trans->staging + i * ptrans->stride * ptrans->box.height,
 623                bo->map + res->levels[level].offset + (i + box->z) * res->levels[level].layer_stride,
 624                &ptrans->box,
 625                ptrans->stride,
 626                res->levels[level].stride,
 627                util_format_get_blocksize(pres->format));
 628       }
 629
 630       return trans->staging;
 631    } else {
 632       ptrans->stride = res->levels[level].stride;
 633       ptrans->layer_stride = res->levels[level].layer_stride;
 634
 635       return bo->map + res->levels[level].offset +
 636          box->z * res->levels[level].layer_stride +
 637          box->y / util_format_get_blockheight(pres->format) * ptrans->stride +
 638          box->x / util_format_get_blockwidth(pres->format) *
 639          util_format_get_blocksize(pres->format);
 640    }
 641 }
 642
 643 static void
 644 lima_transfer_flush_region(struct pipe_context *pctx,
 645                            struct pipe_transfer *ptrans,
 646                            const struct pipe_box *box)
 647 {
 648
 649 }
 650
 651 static void
 652 lima_transfer_unmap(struct pipe_context *pctx,
 653                     struct pipe_transfer *ptrans)
 654 {
 655    struct lima_context *ctx = lima_context(pctx);
 656    struct lima_transfer *trans = lima_transfer(ptrans);
 657    struct lima_resource *res = lima_resource(ptrans->resource);
 658    struct lima_bo *bo = res->bo;
 659    struct pipe_resource *pres;
 660
 661    if (trans->staging) {
 662       pres = &res->base;
 663       if (ptrans->usage & PIPE_TRANSFER_WRITE) {
 664          unsigned i;
 665          for (i = 0; i < ptrans->box.depth; i++)
 666             panfrost_store_tiled_image(
 667                bo->map + res->levels[ptrans->level].offset + (i + ptrans->box.z) * res->levels[ptrans->level].layer_stride,
 668                trans->staging + i * ptrans->stride * ptrans->box.height,
 669                &ptrans->box,
 670                res->levels[ptrans->level].stride,
 671                ptrans->stride,
 672                util_format_get_blocksize(pres->format));
 673       }
 674       free(trans->staging);
 675    }
 676
 677    pipe_resource_reference(&ptrans->resource, NULL);
 678    slab_free(&ctx->transfer_pool, trans);
 679 }
 680
 681 static void
 682 lima_util_blitter_save_states(struct lima_context *ctx)
 683 {
 684    util_blitter_save_blend(ctx->blitter, (void *)ctx->blend);
 685    util_blitter_save_depth_stencil_alpha(ctx->blitter, (void *)ctx->zsa);
 686    util_blitter_save_stencil_ref(ctx->blitter, &ctx->stencil_ref);
 687    util_blitter_save_rasterizer(ctx->blitter, (void *)ctx->rasterizer);
 688    util_blitter_save_fragment_shader(ctx->blitter, ctx->fs);
 689    util_blitter_save_vertex_shader(ctx->blitter, ctx->vs);
 690    util_blitter_save_viewport(ctx->blitter,
 691                               &ctx->viewport.transform);
 692    util_blitter_save_scissor(ctx->blitter, &ctx->scissor);
 693    util_blitter_save_vertex_elements(ctx->blitter,
 694                                      ctx->vertex_elements);
 695    util_blitter_save_vertex_buffer_slot(ctx->blitter,
 696                                         ctx->vertex_buffers.vb);
 697
 698    util_blitter_save_framebuffer(ctx->blitter, &ctx->framebuffer.base);
 699
 700    util_blitter_save_fragment_sampler_states(ctx->blitter,
 701                                              ctx->tex_stateobj.num_samplers,
 702                                              (void**)ctx->tex_stateobj.samplers);
 703    util_blitter_save_fragment_sampler_views(ctx->blitter,
 704                                             ctx->tex_stateobj.num_textures,
 705                                             ctx->tex_stateobj.textures);
 706 }
 707
 708 static void
 709 lima_blit(struct pipe_context *pctx, const struct pipe_blit_info *blit_info)
 710 {
 711    struct lima_context *ctx = lima_context(pctx);
 712    struct pipe_blit_info info = *blit_info;
 713
 714    if (util_try_blit_via_copy_region(pctx, &info)) {
 715       return; /* done */
 716    }
 717
 718    if (info.mask & PIPE_MASK_S) {
 719       debug_printf("lima: cannot blit stencil, skipping\n");
 720       info.mask &= ~PIPE_MASK_S;
 721    }
 722
 723    if (!util_blitter_is_blit_supported(ctx->blitter, &info)) {
 724       debug_printf("lima: blit unsupported %s -> %s\n",
 725                    util_format_short_name(info.src.resource->format),
 726                    util_format_short_name(info.dst.resource->format));
 727       return;
 728    }
 729
 730    lima_util_blitter_save_states(ctx);
 731
 732    util_blitter_blit(ctx->blitter, &info);
 733 }
 734
 735 static void
 736 lima_flush_resource(struct pipe_context *pctx, struct pipe_resource *resource)
 737 {
 738
 739 }
 740
 741 void
 742 lima_resource_context_init(struct lima_context *ctx)
 743 {
 744    ctx->base.create_surface = lima_surface_create;
 745    ctx->base.surface_destroy = lima_surface_destroy;
 746
 747    /* TODO: optimize these functions to read/write data directly
 748     * from/to target instead of creating a staging memory for tiled
 749     * buffer indirectly
 750     */
 751    ctx->base.buffer_subdata = u_default_buffer_subdata;
 752    ctx->base.texture_subdata = u_default_texture_subdata;
 753    ctx->base.resource_copy_region = util_resource_copy_region;
 754
 755    ctx->base.blit = lima_blit;
 756
 757    ctx->base.transfer_map = lima_transfer_map;
 758    ctx->base.transfer_flush_region = lima_transfer_flush_region;
 759    ctx->base.transfer_unmap = lima_transfer_unmap;
 760
 761    ctx->base.flush_resource = lima_flush_resource;
 762 }