src/gallium/drivers/etnaviv/etnaviv_context.c

   1 /*
   2  * Copyright (c) 2012-2015 Etnaviv 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  * Authors:
  24  *    Wladimir J. van der Laan <laanwj@gmail.com>
  25  *    Christian Gmeiner <christian.gmeiner@gmail.com>
  26  */
  27
  28 #include "etnaviv_context.h"
  29
  30 #include "etnaviv_blend.h"
  31 #include "etnaviv_clear_blit.h"
  32 #include "etnaviv_compiler.h"
  33 #include "etnaviv_debug.h"
  34 #include "etnaviv_emit.h"
  35 #include "etnaviv_fence.h"
  36 #include "etnaviv_query.h"
  37 #include "etnaviv_query_hw.h"
  38 #include "etnaviv_rasterizer.h"
  39 #include "etnaviv_resource.h"
  40 #include "etnaviv_screen.h"
  41 #include "etnaviv_shader.h"
  42 #include "etnaviv_state.h"
  43 #include "etnaviv_surface.h"
  44 #include "etnaviv_texture.h"
  45 #include "etnaviv_transfer.h"
  46 #include "etnaviv_translate.h"
  47 #include "etnaviv_zsa.h"
  48
  49 #include "pipe/p_context.h"
  50 #include "pipe/p_state.h"
  51 #include "util/hash_table.h"
  52 #include "util/u_blitter.h"
  53 #include "util/u_helpers.h"
  54 #include "util/u_memory.h"
  55 #include "util/u_prim.h"
  56 #include "util/u_upload_mgr.h"
  57
  58 #include "hw/common.xml.h"
  59
  60 static void
  61 etna_context_destroy(struct pipe_context *pctx)
  62 {
  63    struct etna_context *ctx = etna_context(pctx);
  64
  65    mtx_lock(&ctx->lock);
  66    if (ctx->used_resources_read) {
  67
  68       /*
  69        * There should be no resources tracked in the context when it's being
  70        * destroyed. Be sure there are none to avoid memory leaks on buggy
  71        * programs.
  72        */
  73       set_foreach(ctx->used_resources_read, entry) {
  74          struct etna_resource *rsc = (struct etna_resource *)entry->key;
  75
  76          _mesa_set_remove_key(rsc->pending_ctx, ctx);
  77       }
  78       _mesa_set_destroy(ctx->used_resources_read, NULL);
  79
  80    }
  81    if (ctx->used_resources_write) {
  82
  83       /*
  84        * There should be no resources tracked in the context when it's being
  85        * destroyed. Be sure there are none to avoid memory leaks on buggy
  86        * programs.
  87        */
  88       set_foreach(ctx->used_resources_write, entry) {
  89          struct etna_resource *rsc = (struct etna_resource *)entry->key;
  90
  91          _mesa_set_remove_key(rsc->pending_ctx, ctx);
  92       }
  93       _mesa_set_destroy(ctx->used_resources_write, NULL);
  94
  95    }
  96    mtx_unlock(&ctx->lock);
  97
  98    if (ctx->dummy_rt)
  99       etna_bo_del(ctx->dummy_rt);
 100
 101    util_copy_framebuffer_state(&ctx->framebuffer_s, NULL);
 102
 103    if (ctx->primconvert)
 104       util_primconvert_destroy(ctx->primconvert);
 105
 106    if (ctx->blitter)
 107       util_blitter_destroy(ctx->blitter);
 108
 109    if (pctx->stream_uploader)
 110       u_upload_destroy(pctx->stream_uploader);
 111
 112    if (ctx->stream)
 113       etna_cmd_stream_del(ctx->stream);
 114
 115    slab_destroy_child(&ctx->transfer_pool);
 116
 117    if (ctx->in_fence_fd != -1)
 118       close(ctx->in_fence_fd);
 119
 120    mtx_destroy(&ctx->lock);
 121
 122    FREE(pctx);
 123 }
 124
 125 /* Update render state where needed based on draw operation */
 126 static void
 127 etna_update_state_for_draw(struct etna_context *ctx, const struct pipe_draw_info *info)
 128 {
 129    /* Handle primitive restart:
 130     * - If not an indexed draw, we don't care about the state of the primitive restart bit.
 131     * - Otherwise, set the bit in INDEX_STREAM_CONTROL in the index buffer state
 132     *   accordingly
 133     * - If the value of the INDEX_STREAM_CONTROL register changed due to this, or
 134     *   primitive restart is enabled and the restart index changed, mark the index
 135     *   buffer state as dirty
 136     */
 137
 138    if (info->index_size) {
 139       uint32_t new_control = ctx->index_buffer.FE_INDEX_STREAM_CONTROL;
 140
 141       if (info->primitive_restart)
 142          new_control |= VIVS_FE_INDEX_STREAM_CONTROL_PRIMITIVE_RESTART;
 143       else
 144          new_control &= ~VIVS_FE_INDEX_STREAM_CONTROL_PRIMITIVE_RESTART;
 145
 146       if (ctx->index_buffer.FE_INDEX_STREAM_CONTROL != new_control ||
 147           (info->primitive_restart && ctx->index_buffer.FE_PRIMITIVE_RESTART_INDEX != info->restart_index)) {
 148          ctx->index_buffer.FE_INDEX_STREAM_CONTROL = new_control;
 149          ctx->index_buffer.FE_PRIMITIVE_RESTART_INDEX = info->restart_index;
 150          ctx->dirty |= ETNA_DIRTY_INDEX_BUFFER;
 151       }
 152    }
 153 }
 154
 155 static bool
 156 etna_get_vs(struct etna_context *ctx, struct etna_shader_key key)
 157 {
 158    const struct etna_shader_variant *old = ctx->shader.vs;
 159
 160    ctx->shader.vs = etna_shader_variant(ctx->shader.bind_vs, key, &ctx->debug);
 161
 162    if (!ctx->shader.vs)
 163       return false;
 164
 165    if (old != ctx->shader.vs)
 166       ctx->dirty |= ETNA_DIRTY_SHADER;
 167
 168    return true;
 169 }
 170
 171 static bool
 172 etna_get_fs(struct etna_context *ctx, struct etna_shader_key key)
 173 {
 174    const struct etna_shader_variant *old = ctx->shader.fs;
 175
 176    ctx->shader.fs = etna_shader_variant(ctx->shader.bind_fs, key, &ctx->debug);
 177
 178    if (!ctx->shader.fs)
 179       return false;
 180
 181    if (old != ctx->shader.fs)
 182       ctx->dirty |= ETNA_DIRTY_SHADER;
 183
 184    return true;
 185 }
 186
 187 static void
 188 etna_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
 189 {
 190    struct etna_context *ctx = etna_context(pctx);
 191    struct pipe_framebuffer_state *pfb = &ctx->framebuffer_s;
 192    uint32_t draw_mode;
 193    unsigned i;
 194
 195    if (!info->count_from_stream_output && !info->indirect &&
 196        !info->primitive_restart &&
 197        !u_trim_pipe_prim(info->mode, (unsigned*)&info->count))
 198       return;
 199
 200    if (ctx->vertex_elements == NULL || ctx->vertex_elements->num_elements == 0)
 201       return; /* Nothing to do */
 202
 203    if (!(ctx->prim_hwsupport & (1 << info->mode))) {
 204       struct primconvert_context *primconvert = ctx->primconvert;
 205       util_primconvert_save_rasterizer_state(primconvert, ctx->rasterizer);
 206       util_primconvert_draw_vbo(primconvert, info);
 207       return;
 208    }
 209
 210    int prims = u_decomposed_prims_for_vertices(info->mode, info->count);
 211    if (unlikely(prims <= 0)) {
 212       DBG("Invalid draw primitive mode=%i or no primitives to be drawn", info->mode);
 213       return;
 214    }
 215
 216    draw_mode = translate_draw_mode(info->mode);
 217    if (draw_mode == ETNA_NO_MATCH) {
 218       BUG("Unsupported draw mode");
 219       return;
 220    }
 221
 222    /* Upload a user index buffer. */
 223    unsigned index_offset = 0;
 224    struct pipe_resource *indexbuf = NULL;
 225
 226    if (info->index_size) {
 227       indexbuf = info->has_user_indices ? NULL : info->index.resource;
 228       if (info->has_user_indices &&
 229           !util_upload_index_buffer(pctx, info, &indexbuf, &index_offset, 4)) {
 230          BUG("Index buffer upload failed.");
 231          return;
 232       }
 233       /* Add start to index offset, when rendering indexed */
 234       index_offset += info->start * info->index_size;
 235
 236       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.bo = etna_resource(indexbuf)->bo;
 237       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.offset = index_offset;
 238       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.flags = ETNA_RELOC_READ;
 239       ctx->index_buffer.FE_INDEX_STREAM_CONTROL = translate_index_size(info->index_size);
 240
 241       if (!ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.bo) {
 242          BUG("Unsupported or no index buffer");
 243          return;
 244       }
 245    } else {
 246       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.bo = 0;
 247       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.offset = 0;
 248       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.flags = 0;
 249       ctx->index_buffer.FE_INDEX_STREAM_CONTROL = 0;
 250    }
 251    ctx->dirty |= ETNA_DIRTY_INDEX_BUFFER;
 252
 253    struct etna_shader_key key = {
 254       .front_ccw = ctx->rasterizer->front_ccw,
 255    };
 256
 257    if (pfb->cbufs[0])
 258       key.frag_rb_swap = !!translate_pe_format_rb_swap(pfb->cbufs[0]->format);
 259
 260    if (!etna_get_vs(ctx, key) || !etna_get_fs(ctx, key)) {
 261       BUG("compiled shaders are not okay");
 262       return;
 263    }
 264
 265    /* Update any derived state */
 266    if (!etna_state_update(ctx))
 267       return;
 268
 269    mtx_lock(&ctx->lock);
 270
 271    /*
 272     * Figure out the buffers/features we need:
 273     */
 274    if (etna_depth_enabled(ctx))
 275       resource_written(ctx, pfb->zsbuf->texture);
 276
 277    if (etna_stencil_enabled(ctx))
 278       resource_written(ctx, pfb->zsbuf->texture);
 279
 280    for (i = 0; i < pfb->nr_cbufs; i++) {
 281       struct pipe_resource *surf;
 282
 283       if (!pfb->cbufs[i])
 284          continue;
 285
 286       surf = pfb->cbufs[i]->texture;
 287       resource_written(ctx, surf);
 288    }
 289
 290    /* Mark constant buffers as being read */
 291    resource_read(ctx, ctx->constant_buffer[PIPE_SHADER_VERTEX].buffer);
 292    resource_read(ctx, ctx->constant_buffer[PIPE_SHADER_FRAGMENT].buffer);
 293
 294    /* Mark VBOs as being read */
 295    foreach_bit(i, ctx->vertex_buffer.enabled_mask) {
 296       assert(!ctx->vertex_buffer.vb[i].is_user_buffer);
 297       resource_read(ctx, ctx->vertex_buffer.vb[i].buffer.resource);
 298    }
 299
 300    /* Mark index buffer as being read */
 301    resource_read(ctx, indexbuf);
 302
 303    /* Mark textures as being read */
 304    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 305       if (ctx->sampler_view[i]) {
 306           resource_read(ctx, ctx->sampler_view[i]->texture);
 307
 308          /* if texture was modified since the last update,
 309           * we need to clear the texture cache and possibly
 310           * resolve/update ts
 311           */
 312          etna_update_sampler_source(ctx->sampler_view[i], i);
 313       }
 314    }
 315
 316    list_for_each_entry(struct etna_hw_query, hq, &ctx->active_hw_queries, node)
 317       resource_written(ctx, hq->prsc);
 318
 319    ctx->stats.prims_emitted += u_reduced_prims_for_vertices(info->mode, info->count);
 320    ctx->stats.draw_calls++;
 321
 322    /* Update state for this draw operation */
 323    etna_update_state_for_draw(ctx, info);
 324
 325    /* First, sync state, then emit DRAW_PRIMITIVES or DRAW_INDEXED_PRIMITIVES */
 326    etna_emit_state(ctx);
 327
 328    if (ctx->specs.halti >= 2) {
 329       /* On HALTI2+ (GC3000 and higher) only use instanced drawing commands, as the blob does */
 330       etna_draw_instanced(ctx->stream, info->index_size, draw_mode, info->instance_count,
 331          info->count, info->index_size ? info->index_bias : info->start);
 332    } else {
 333       if (info->index_size)
 334          etna_draw_indexed_primitives(ctx->stream, draw_mode, 0, prims, info->index_bias);
 335       else
 336          etna_draw_primitives(ctx->stream, draw_mode, info->start, prims);
 337    }
 338
 339    if (DBG_ENABLED(ETNA_DBG_DRAW_STALL)) {
 340       /* Stall the FE after every draw operation.  This allows better
 341        * debug of GPU hang conditions, as the FE will indicate which
 342        * draw op has caused the hang. */
 343       etna_stall(ctx->stream, SYNC_RECIPIENT_FE, SYNC_RECIPIENT_PE);
 344    }
 345    mtx_unlock(&ctx->lock);
 346
 347    if (DBG_ENABLED(ETNA_DBG_FLUSH_ALL))
 348       pctx->flush(pctx, NULL, 0);
 349
 350    if (ctx->framebuffer_s.cbufs[0])
 351       etna_resource(ctx->framebuffer_s.cbufs[0]->texture)->seqno++;
 352    if (ctx->framebuffer_s.zsbuf)
 353       etna_resource(ctx->framebuffer_s.zsbuf->texture)->seqno++;
 354    if (info->index_size && indexbuf != info->index.resource)
 355       pipe_resource_reference(&indexbuf, NULL);
 356 }
 357
 358 static void
 359 etna_reset_gpu_state(struct etna_context *ctx)
 360 {
 361    struct etna_cmd_stream *stream = ctx->stream;
 362
 363    etna_set_state(stream, VIVS_GL_API_MODE, VIVS_GL_API_MODE_OPENGL);
 364    etna_set_state(stream, VIVS_GL_VERTEX_ELEMENT_CONFIG, 0x00000001);
 365    /* blob sets this to 0x40000031 on GC7000, seems to make no difference,
 366     * but keep it in mind if depth behaves strangely. */
 367    etna_set_state(stream, VIVS_RA_EARLY_DEPTH, 0x00000031);
 368    etna_set_state(stream, VIVS_PA_W_CLIP_LIMIT, 0x34000001);
 369    etna_set_state(stream, VIVS_PA_FLAGS, 0x00000000); /* blob sets ZCONVERT_BYPASS on GC3000+, this messes up z for us */
 370    etna_set_state(stream, VIVS_PA_VIEWPORT_UNK00A80, 0x38a01404);
 371    etna_set_state(stream, VIVS_PA_VIEWPORT_UNK00A84, fui(8192.0));
 372    etna_set_state(stream, VIVS_PA_ZFARCLIPPING, 0x00000000);
 373    etna_set_state(stream, VIVS_RA_HDEPTH_CONTROL, 0x00007000);
 374    etna_set_state(stream, VIVS_PE_STENCIL_CONFIG_EXT2, 0x00000000);
 375    etna_set_state(stream, VIVS_PS_CONTROL_EXT, 0x00000000);
 376
 377    /* There is no HALTI0 specific state */
 378    if (ctx->specs.halti >= 1) { /* Only on HALTI1+ */
 379       etna_set_state(stream, VIVS_VS_HALTI1_UNK00884, 0x00000808);
 380    }
 381    if (ctx->specs.halti >= 2) { /* Only on HALTI2+ */
 382       etna_set_state(stream, VIVS_RA_UNK00E0C, 0x00000000);
 383    }
 384    if (ctx->specs.halti >= 3) { /* Only on HALTI3+ */
 385       etna_set_state(stream, VIVS_PS_HALTI3_UNK0103C, 0x76543210);
 386    }
 387    if (ctx->specs.halti >= 4) { /* Only on HALTI4+ */
 388       etna_set_state(stream, VIVS_PS_MSAA_CONFIG, 0x6fffffff & 0xf70fffff & 0xfff6ffff &
 389                                                   0xffff6fff & 0xfffff6ff & 0xffffff7f);
 390       etna_set_state(stream, VIVS_PE_HALTI4_UNK014C0, 0x00000000);
 391    }
 392    if (ctx->specs.halti >= 5) { /* Only on HALTI5+ */
 393       etna_set_state(stream, VIVS_NTE_DESCRIPTOR_UNK14C40, 0x00000001);
 394       etna_set_state(stream, VIVS_FE_HALTI5_UNK007D8, 0x00000002);
 395       etna_set_state(stream, VIVS_FE_HALTI5_ID_CONFIG, 0x00000000);
 396       etna_set_state(stream, VIVS_PS_SAMPLER_BASE, 0x00000000);
 397       etna_set_state(stream, VIVS_VS_SAMPLER_BASE, 0x00000020);
 398       etna_set_state(stream, VIVS_SH_CONFIG, VIVS_SH_CONFIG_RTNE_ROUNDING);
 399    } else { /* Only on pre-HALTI5 */
 400       etna_set_state(stream, VIVS_GL_UNK03834, 0x00000000);
 401       etna_set_state(stream, VIVS_GL_UNK03838, 0x00000000);
 402       etna_set_state(stream, VIVS_GL_UNK03854, 0x00000000);
 403    }
 404
 405    if (!ctx->specs.use_blt) {
 406       /* Enable SINGLE_BUFFER for resolve, if supported */
 407       etna_set_state(stream, VIVS_RS_SINGLE_BUFFER, COND(ctx->specs.single_buffer, VIVS_RS_SINGLE_BUFFER_ENABLE));
 408    }
 409
 410    if (ctx->specs.halti >= 5) {
 411       /* TXDESC cache flush - do this once at the beginning, as texture
 412        * descriptors are only written by the CPU once, then patched by the kernel
 413        * before command stream submission. It does not need flushing if the
 414        * referenced image data changes.
 415        */
 416       etna_set_state(stream, VIVS_NTE_DESCRIPTOR_FLUSH, 0);
 417       etna_set_state(stream, VIVS_GL_FLUSH_CACHE,
 418             VIVS_GL_FLUSH_CACHE_DESCRIPTOR_UNK12 |
 419             VIVS_GL_FLUSH_CACHE_DESCRIPTOR_UNK13);
 420
 421       /* Icache invalidate (should do this on shader change?) */
 422       etna_set_state(stream, VIVS_VS_ICACHE_INVALIDATE,
 423             VIVS_VS_ICACHE_INVALIDATE_UNK0 | VIVS_VS_ICACHE_INVALIDATE_UNK1 |
 424             VIVS_VS_ICACHE_INVALIDATE_UNK2 | VIVS_VS_ICACHE_INVALIDATE_UNK3 |
 425             VIVS_VS_ICACHE_INVALIDATE_UNK4);
 426    }
 427
 428    ctx->dirty = ~0L;
 429    ctx->dirty_sampler_views = ~0L;
 430 }
 431
 432 static void
 433 etna_flush(struct pipe_context *pctx, struct pipe_fence_handle **fence,
 434            enum pipe_flush_flags flags)
 435 {
 436    struct etna_context *ctx = etna_context(pctx);
 437    int out_fence_fd = -1;
 438
 439    mtx_lock(&ctx->lock);
 440
 441    list_for_each_entry(struct etna_hw_query, hq, &ctx->active_hw_queries, node)
 442       etna_hw_query_suspend(hq, ctx);
 443
 444    etna_cmd_stream_flush(ctx->stream, ctx->in_fence_fd,
 445                           (flags & PIPE_FLUSH_FENCE_FD) ? &out_fence_fd : NULL);
 446
 447    list_for_each_entry(struct etna_hw_query, hq, &ctx->active_hw_queries, node)
 448       etna_hw_query_resume(hq, ctx);
 449
 450    if (fence)
 451       *fence = etna_fence_create(pctx, out_fence_fd);
 452
 453    /*
 454    * Go through all _resources_ pending in this _context_ and mark them as
 455    * not pending in this _context_ anymore, since they were just flushed.
 456    */
 457    set_foreach(ctx->used_resources_read, entry) {
 458       struct etna_resource *rsc = (struct etna_resource *)entry->key;
 459       struct pipe_resource *referenced = &rsc->base;
 460
 461       _mesa_set_remove_key(rsc->pending_ctx, ctx);
 462
 463       /* if resource has no pending ctx's reset its status */
 464       if (_mesa_set_next_entry(rsc->pending_ctx, NULL) == NULL)
 465          rsc->status &= ~ETNA_PENDING_READ;
 466
 467       pipe_resource_reference(&referenced, NULL);
 468    }
 469    _mesa_set_clear(ctx->used_resources_read, NULL);
 470
 471    set_foreach(ctx->used_resources_write, entry) {
 472       struct etna_resource *rsc = (struct etna_resource *)entry->key;
 473       struct pipe_resource *referenced = &rsc->base;
 474
 475       _mesa_set_remove_key(rsc->pending_ctx, ctx);
 476
 477       /* if resource has no pending ctx's reset its status */
 478       if (_mesa_set_next_entry(rsc->pending_ctx, NULL) == NULL)
 479          rsc->status &= ~ETNA_PENDING_WRITE;
 480
 481       pipe_resource_reference(&referenced, NULL);
 482    }
 483    _mesa_set_clear(ctx->used_resources_write, NULL);
 484
 485    etna_reset_gpu_state(ctx);
 486    mtx_unlock(&ctx->lock);
 487 }
 488
 489 static void
 490 etna_context_force_flush(struct etna_cmd_stream *stream, void *priv)
 491 {
 492    struct pipe_context *pctx = priv;
 493
 494    pctx->flush(pctx, NULL, 0);
 495
 496 }
 497
 498 static void
 499 etna_set_debug_callback(struct pipe_context *pctx,
 500                         const struct pipe_debug_callback *cb)
 501 {
 502    struct etna_context *ctx = etna_context(pctx);
 503
 504    if (cb)
 505       ctx->debug = *cb;
 506    else
 507       memset(&ctx->debug, 0, sizeof(ctx->debug));
 508 }
 509
 510 struct pipe_context *
 511 etna_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
 512 {
 513    struct etna_context *ctx = CALLOC_STRUCT(etna_context);
 514    struct etna_screen *screen;
 515    struct pipe_context *pctx;
 516
 517    if (ctx == NULL)
 518       return NULL;
 519
 520    pctx = &ctx->base;
 521    pctx->priv = ctx;
 522    pctx->screen = pscreen;
 523    pctx->stream_uploader = u_upload_create_default(pctx);
 524    if (!pctx->stream_uploader)
 525       goto fail;
 526    pctx->const_uploader = pctx->stream_uploader;
 527
 528    screen = etna_screen(pscreen);
 529    ctx->stream = etna_cmd_stream_new(screen->pipe, 0x2000,
 530                                      &etna_context_force_flush, pctx);
 531    if (ctx->stream == NULL)
 532       goto fail;
 533
 534    ctx->used_resources_read = _mesa_set_create(NULL, _mesa_hash_pointer,
 535                                           _mesa_key_pointer_equal);
 536    if (!ctx->used_resources_read)
 537       goto fail;
 538
 539    ctx->used_resources_write = _mesa_set_create(NULL, _mesa_hash_pointer,
 540                                           _mesa_key_pointer_equal);
 541    if (!ctx->used_resources_write)
 542       goto fail;
 543
 544    mtx_init(&ctx->lock, mtx_recursive);
 545
 546    /* context ctxate setup */
 547    ctx->specs = screen->specs;
 548    ctx->screen = screen;
 549    /* need some sane default in case state tracker doesn't set some state: */
 550    ctx->sample_mask = 0xffff;
 551
 552    /*  Set sensible defaults for state */
 553    etna_reset_gpu_state(ctx);
 554
 555    ctx->in_fence_fd = -1;
 556
 557    pctx->destroy = etna_context_destroy;
 558    pctx->draw_vbo = etna_draw_vbo;
 559    pctx->flush = etna_flush;
 560    pctx->set_debug_callback = etna_set_debug_callback;
 561    pctx->create_fence_fd = etna_create_fence_fd;
 562    pctx->fence_server_sync = etna_fence_server_sync;
 563
 564    /* creation of compile states */
 565    pctx->create_blend_state = etna_blend_state_create;
 566    pctx->create_rasterizer_state = etna_rasterizer_state_create;
 567    pctx->create_depth_stencil_alpha_state = etna_zsa_state_create;
 568
 569    etna_clear_blit_init(pctx);
 570    etna_query_context_init(pctx);
 571    etna_state_init(pctx);
 572    etna_surface_init(pctx);
 573    etna_shader_init(pctx);
 574    etna_texture_init(pctx);
 575    etna_transfer_init(pctx);
 576
 577    ctx->blitter = util_blitter_create(pctx);
 578    if (!ctx->blitter)
 579       goto fail;
 580
 581    /* Generate the bitmask of supported draw primitives. */
 582    ctx->prim_hwsupport = 1 << PIPE_PRIM_POINTS |
 583                          1 << PIPE_PRIM_LINES |
 584                          1 << PIPE_PRIM_LINE_STRIP |
 585                          1 << PIPE_PRIM_TRIANGLES |
 586                          1 << PIPE_PRIM_TRIANGLE_FAN;
 587
 588    /* TODO: The bug relates only to indexed draws, but here we signal
 589     * that there is no support for triangle strips at all. This should
 590     * be refined.
 591     */
 592    if (VIV_FEATURE(ctx->screen, chipMinorFeatures2, BUG_FIXES8))
 593       ctx->prim_hwsupport |= 1 << PIPE_PRIM_TRIANGLE_STRIP;
 594
 595    if (VIV_FEATURE(ctx->screen, chipMinorFeatures2, LINE_LOOP))
 596       ctx->prim_hwsupport |= 1 << PIPE_PRIM_LINE_LOOP;
 597
 598    ctx->primconvert = util_primconvert_create(pctx, ctx->prim_hwsupport);
 599    if (!ctx->primconvert)
 600       goto fail;
 601
 602    slab_create_child(&ctx->transfer_pool, &screen->transfer_pool);
 603    list_inithead(&ctx->active_hw_queries);
 604
 605    /* create dummy RT buffer, used when rendering with no color buffer */
 606    ctx->dummy_rt = etna_bo_new(ctx->screen->dev, 64 * 64 * 4,
 607                                DRM_ETNA_GEM_CACHE_WC);
 608    if (!ctx->dummy_rt)
 609       goto fail;
 610
 611    ctx->dummy_rt_reloc.bo = ctx->dummy_rt;
 612    ctx->dummy_rt_reloc.offset = 0;
 613    ctx->dummy_rt_reloc.flags = ETNA_RELOC_READ | ETNA_RELOC_WRITE;
 614
 615    if (screen->specs.halti >= 5) {
 616       /* Create an empty dummy texture descriptor */
 617       ctx->dummy_desc_bo = etna_bo_new(ctx->screen->dev, 0x100, DRM_ETNA_GEM_CACHE_WC);
 618       if (!ctx->dummy_desc_bo)
 619          goto fail;
 620       uint32_t *buf = etna_bo_map(ctx->dummy_desc_bo);
 621       etna_bo_cpu_prep(ctx->dummy_desc_bo, DRM_ETNA_PREP_WRITE);
 622       memset(buf, 0, 0x100);
 623       etna_bo_cpu_fini(ctx->dummy_desc_bo);
 624       ctx->DUMMY_DESC_ADDR.bo = ctx->dummy_desc_bo;
 625       ctx->DUMMY_DESC_ADDR.offset = 0;
 626       ctx->DUMMY_DESC_ADDR.flags = ETNA_RELOC_READ;
 627    }
 628
 629    return pctx;
 630
 631 fail:
 632    pctx->destroy(pctx);
 633
 634    return NULL;
 635 }