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    for (unsigned i = 0; i < ETNA_MAX_CONST_BUF; i++) {
 292       resource_read(ctx, ctx->constant_buffer[PIPE_SHADER_VERTEX][i].buffer);
 293       resource_read(ctx, ctx->constant_buffer[PIPE_SHADER_FRAGMENT][i].buffer);
 294    }
 295
 296    /* Mark VBOs as being read */
 297    foreach_bit(i, ctx->vertex_buffer.enabled_mask) {
 298       assert(!ctx->vertex_buffer.vb[i].is_user_buffer);
 299       resource_read(ctx, ctx->vertex_buffer.vb[i].buffer.resource);
 300    }
 301
 302    /* Mark index buffer as being read */
 303    resource_read(ctx, indexbuf);
 304
 305    /* Mark textures as being read */
 306    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 307       if (ctx->sampler_view[i]) {
 308           resource_read(ctx, ctx->sampler_view[i]->texture);
 309
 310          /* if texture was modified since the last update,
 311           * we need to clear the texture cache and possibly
 312           * resolve/update ts
 313           */
 314          etna_update_sampler_source(ctx->sampler_view[i], i);
 315       }
 316    }
 317
 318    list_for_each_entry(struct etna_hw_query, hq, &ctx->active_hw_queries, node)
 319       resource_written(ctx, hq->prsc);
 320
 321    ctx->stats.prims_emitted += u_reduced_prims_for_vertices(info->mode, info->count);
 322    ctx->stats.draw_calls++;
 323
 324    /* Update state for this draw operation */
 325    etna_update_state_for_draw(ctx, info);
 326
 327    /* First, sync state, then emit DRAW_PRIMITIVES or DRAW_INDEXED_PRIMITIVES */
 328    etna_emit_state(ctx);
 329
 330    if (ctx->specs.halti >= 2) {
 331       /* On HALTI2+ (GC3000 and higher) only use instanced drawing commands, as the blob does */
 332       etna_draw_instanced(ctx->stream, info->index_size, draw_mode, info->instance_count,
 333          info->count, info->index_size ? info->index_bias : info->start);
 334    } else {
 335       if (info->index_size)
 336          etna_draw_indexed_primitives(ctx->stream, draw_mode, 0, prims, info->index_bias);
 337       else
 338          etna_draw_primitives(ctx->stream, draw_mode, info->start, prims);
 339    }
 340
 341    if (DBG_ENABLED(ETNA_DBG_DRAW_STALL)) {
 342       /* Stall the FE after every draw operation.  This allows better
 343        * debug of GPU hang conditions, as the FE will indicate which
 344        * draw op has caused the hang. */
 345       etna_stall(ctx->stream, SYNC_RECIPIENT_FE, SYNC_RECIPIENT_PE);
 346    }
 347    mtx_unlock(&ctx->lock);
 348
 349    if (DBG_ENABLED(ETNA_DBG_FLUSH_ALL))
 350       pctx->flush(pctx, NULL, 0);
 351
 352    if (ctx->framebuffer_s.cbufs[0])
 353       etna_resource(ctx->framebuffer_s.cbufs[0]->texture)->seqno++;
 354    if (ctx->framebuffer_s.zsbuf)
 355       etna_resource(ctx->framebuffer_s.zsbuf->texture)->seqno++;
 356    if (info->index_size && indexbuf != info->index.resource)
 357       pipe_resource_reference(&indexbuf, NULL);
 358 }
 359
 360 static void
 361 etna_reset_gpu_state(struct etna_context *ctx)
 362 {
 363    struct etna_cmd_stream *stream = ctx->stream;
 364
 365    etna_set_state(stream, VIVS_GL_API_MODE, VIVS_GL_API_MODE_OPENGL);
 366    etna_set_state(stream, VIVS_GL_VERTEX_ELEMENT_CONFIG, 0x00000001);
 367    /* blob sets this to 0x40000031 on GC7000, seems to make no difference,
 368     * but keep it in mind if depth behaves strangely. */
 369    etna_set_state(stream, VIVS_RA_EARLY_DEPTH, 0x00000031);
 370    etna_set_state(stream, VIVS_PA_W_CLIP_LIMIT, 0x34000001);
 371    etna_set_state(stream, VIVS_PA_FLAGS, 0x00000000); /* blob sets ZCONVERT_BYPASS on GC3000+, this messes up z for us */
 372    etna_set_state(stream, VIVS_PA_VIEWPORT_UNK00A80, 0x38a01404);
 373    etna_set_state(stream, VIVS_PA_VIEWPORT_UNK00A84, fui(8192.0));
 374    etna_set_state(stream, VIVS_PA_ZFARCLIPPING, 0x00000000);
 375    etna_set_state(stream, VIVS_RA_HDEPTH_CONTROL, 0x00007000);
 376    etna_set_state(stream, VIVS_PE_STENCIL_CONFIG_EXT2, 0x00000000);
 377    etna_set_state(stream, VIVS_PS_CONTROL_EXT, 0x00000000);
 378
 379    /* There is no HALTI0 specific state */
 380    if (ctx->specs.halti >= 1) { /* Only on HALTI1+ */
 381       etna_set_state(stream, VIVS_VS_HALTI1_UNK00884, 0x00000808);
 382    }
 383    if (ctx->specs.halti >= 2) { /* Only on HALTI2+ */
 384       etna_set_state(stream, VIVS_RA_UNK00E0C, 0x00000000);
 385    }
 386    if (ctx->specs.halti >= 3) { /* Only on HALTI3+ */
 387       etna_set_state(stream, VIVS_PS_HALTI3_UNK0103C, 0x76543210);
 388    }
 389    if (ctx->specs.halti >= 4) { /* Only on HALTI4+ */
 390       etna_set_state(stream, VIVS_PS_MSAA_CONFIG, 0x6fffffff & 0xf70fffff & 0xfff6ffff &
 391                                                   0xffff6fff & 0xfffff6ff & 0xffffff7f);
 392       etna_set_state(stream, VIVS_PE_HALTI4_UNK014C0, 0x00000000);
 393    }
 394    if (ctx->specs.halti >= 5) { /* Only on HALTI5+ */
 395       etna_set_state(stream, VIVS_NTE_DESCRIPTOR_UNK14C40, 0x00000001);
 396       etna_set_state(stream, VIVS_FE_HALTI5_UNK007D8, 0x00000002);
 397       etna_set_state(stream, VIVS_FE_HALTI5_ID_CONFIG, 0x00000000);
 398       etna_set_state(stream, VIVS_PS_SAMPLER_BASE, 0x00000000);
 399       etna_set_state(stream, VIVS_VS_SAMPLER_BASE, 0x00000020);
 400       etna_set_state(stream, VIVS_SH_CONFIG, VIVS_SH_CONFIG_RTNE_ROUNDING);
 401    } else { /* Only on pre-HALTI5 */
 402       etna_set_state(stream, VIVS_GL_UNK03834, 0x00000000);
 403       etna_set_state(stream, VIVS_GL_UNK03838, 0x00000000);
 404       etna_set_state(stream, VIVS_GL_UNK03854, 0x00000000);
 405    }
 406
 407    if (!ctx->specs.use_blt) {
 408       /* Enable SINGLE_BUFFER for resolve, if supported */
 409       etna_set_state(stream, VIVS_RS_SINGLE_BUFFER, COND(ctx->specs.single_buffer, VIVS_RS_SINGLE_BUFFER_ENABLE));
 410    }
 411
 412    if (ctx->specs.halti >= 5) {
 413       /* TXDESC cache flush - do this once at the beginning, as texture
 414        * descriptors are only written by the CPU once, then patched by the kernel
 415        * before command stream submission. It does not need flushing if the
 416        * referenced image data changes.
 417        */
 418       etna_set_state(stream, VIVS_NTE_DESCRIPTOR_FLUSH, 0);
 419       etna_set_state(stream, VIVS_GL_FLUSH_CACHE,
 420             VIVS_GL_FLUSH_CACHE_DESCRIPTOR_UNK12 |
 421             VIVS_GL_FLUSH_CACHE_DESCRIPTOR_UNK13);
 422
 423       /* Icache invalidate (should do this on shader change?) */
 424       etna_set_state(stream, VIVS_VS_ICACHE_INVALIDATE,
 425             VIVS_VS_ICACHE_INVALIDATE_UNK0 | VIVS_VS_ICACHE_INVALIDATE_UNK1 |
 426             VIVS_VS_ICACHE_INVALIDATE_UNK2 | VIVS_VS_ICACHE_INVALIDATE_UNK3 |
 427             VIVS_VS_ICACHE_INVALIDATE_UNK4);
 428    }
 429
 430    ctx->dirty = ~0L;
 431    ctx->dirty_sampler_views = ~0L;
 432 }
 433
 434 static void
 435 etna_flush(struct pipe_context *pctx, struct pipe_fence_handle **fence,
 436            enum pipe_flush_flags flags)
 437 {
 438    struct etna_context *ctx = etna_context(pctx);
 439    int out_fence_fd = -1;
 440
 441    mtx_lock(&ctx->lock);
 442
 443    list_for_each_entry(struct etna_hw_query, hq, &ctx->active_hw_queries, node)
 444       etna_hw_query_suspend(hq, ctx);
 445
 446    etna_cmd_stream_flush(ctx->stream, ctx->in_fence_fd,
 447                           (flags & PIPE_FLUSH_FENCE_FD) ? &out_fence_fd : NULL);
 448
 449    list_for_each_entry(struct etna_hw_query, hq, &ctx->active_hw_queries, node)
 450       etna_hw_query_resume(hq, ctx);
 451
 452    if (fence)
 453       *fence = etna_fence_create(pctx, out_fence_fd);
 454
 455    /*
 456    * Go through all _resources_ pending in this _context_ and mark them as
 457    * not pending in this _context_ anymore, since they were just flushed.
 458    */
 459    set_foreach(ctx->used_resources_read, entry) {
 460       struct etna_resource *rsc = (struct etna_resource *)entry->key;
 461       struct pipe_resource *referenced = &rsc->base;
 462
 463       _mesa_set_remove_key(rsc->pending_ctx, ctx);
 464
 465       /* if resource has no pending ctx's reset its status */
 466       if (_mesa_set_next_entry(rsc->pending_ctx, NULL) == NULL)
 467          rsc->status &= ~ETNA_PENDING_READ;
 468
 469       pipe_resource_reference(&referenced, NULL);
 470    }
 471    _mesa_set_clear(ctx->used_resources_read, NULL);
 472
 473    set_foreach(ctx->used_resources_write, entry) {
 474       struct etna_resource *rsc = (struct etna_resource *)entry->key;
 475       struct pipe_resource *referenced = &rsc->base;
 476
 477       _mesa_set_remove_key(rsc->pending_ctx, ctx);
 478
 479       /* if resource has no pending ctx's reset its status */
 480       if (_mesa_set_next_entry(rsc->pending_ctx, NULL) == NULL)
 481          rsc->status &= ~ETNA_PENDING_WRITE;
 482
 483       pipe_resource_reference(&referenced, NULL);
 484    }
 485    _mesa_set_clear(ctx->used_resources_write, NULL);
 486
 487    etna_reset_gpu_state(ctx);
 488    mtx_unlock(&ctx->lock);
 489 }
 490
 491 static void
 492 etna_context_force_flush(struct etna_cmd_stream *stream, void *priv)
 493 {
 494    struct pipe_context *pctx = priv;
 495
 496    pctx->flush(pctx, NULL, 0);
 497
 498 }
 499
 500 static void
 501 etna_set_debug_callback(struct pipe_context *pctx,
 502                         const struct pipe_debug_callback *cb)
 503 {
 504    struct etna_context *ctx = etna_context(pctx);
 505
 506    if (cb)
 507       ctx->debug = *cb;
 508    else
 509       memset(&ctx->debug, 0, sizeof(ctx->debug));
 510 }
 511
 512 struct pipe_context *
 513 etna_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
 514 {
 515    struct etna_context *ctx = CALLOC_STRUCT(etna_context);
 516    struct etna_screen *screen;
 517    struct pipe_context *pctx;
 518
 519    if (ctx == NULL)
 520       return NULL;
 521
 522    pctx = &ctx->base;
 523    pctx->priv = ctx;
 524    pctx->screen = pscreen;
 525    pctx->stream_uploader = u_upload_create_default(pctx);
 526    if (!pctx->stream_uploader)
 527       goto fail;
 528    pctx->const_uploader = pctx->stream_uploader;
 529
 530    screen = etna_screen(pscreen);
 531    ctx->stream = etna_cmd_stream_new(screen->pipe, 0x2000,
 532                                      &etna_context_force_flush, pctx);
 533    if (ctx->stream == NULL)
 534       goto fail;
 535
 536    ctx->used_resources_read = _mesa_set_create(NULL, _mesa_hash_pointer,
 537                                           _mesa_key_pointer_equal);
 538    if (!ctx->used_resources_read)
 539       goto fail;
 540
 541    ctx->used_resources_write = _mesa_set_create(NULL, _mesa_hash_pointer,
 542                                           _mesa_key_pointer_equal);
 543    if (!ctx->used_resources_write)
 544       goto fail;
 545
 546    mtx_init(&ctx->lock, mtx_recursive);
 547
 548    /* context ctxate setup */
 549    ctx->specs = screen->specs;
 550    ctx->screen = screen;
 551    /* need some sane default in case state tracker doesn't set some state: */
 552    ctx->sample_mask = 0xffff;
 553
 554    /*  Set sensible defaults for state */
 555    etna_reset_gpu_state(ctx);
 556
 557    ctx->in_fence_fd = -1;
 558
 559    pctx->destroy = etna_context_destroy;
 560    pctx->draw_vbo = etna_draw_vbo;
 561    pctx->flush = etna_flush;
 562    pctx->set_debug_callback = etna_set_debug_callback;
 563    pctx->create_fence_fd = etna_create_fence_fd;
 564    pctx->fence_server_sync = etna_fence_server_sync;
 565
 566    /* creation of compile states */
 567    pctx->create_blend_state = etna_blend_state_create;
 568    pctx->create_rasterizer_state = etna_rasterizer_state_create;
 569    pctx->create_depth_stencil_alpha_state = etna_zsa_state_create;
 570
 571    etna_clear_blit_init(pctx);
 572    etna_query_context_init(pctx);
 573    etna_state_init(pctx);
 574    etna_surface_init(pctx);
 575    etna_shader_init(pctx);
 576    etna_texture_init(pctx);
 577    etna_transfer_init(pctx);
 578
 579    ctx->blitter = util_blitter_create(pctx);
 580    if (!ctx->blitter)
 581       goto fail;
 582
 583    /* Generate the bitmask of supported draw primitives. */
 584    ctx->prim_hwsupport = 1 << PIPE_PRIM_POINTS |
 585                          1 << PIPE_PRIM_LINES |
 586                          1 << PIPE_PRIM_LINE_STRIP |
 587                          1 << PIPE_PRIM_TRIANGLES |
 588                          1 << PIPE_PRIM_TRIANGLE_FAN;
 589
 590    /* TODO: The bug relates only to indexed draws, but here we signal
 591     * that there is no support for triangle strips at all. This should
 592     * be refined.
 593     */
 594    if (VIV_FEATURE(ctx->screen, chipMinorFeatures2, BUG_FIXES8))
 595       ctx->prim_hwsupport |= 1 << PIPE_PRIM_TRIANGLE_STRIP;
 596
 597    if (VIV_FEATURE(ctx->screen, chipMinorFeatures2, LINE_LOOP))
 598       ctx->prim_hwsupport |= 1 << PIPE_PRIM_LINE_LOOP;
 599
 600    ctx->primconvert = util_primconvert_create(pctx, ctx->prim_hwsupport);
 601    if (!ctx->primconvert)
 602       goto fail;
 603
 604    slab_create_child(&ctx->transfer_pool, &screen->transfer_pool);
 605    list_inithead(&ctx->active_hw_queries);
 606
 607    /* create dummy RT buffer, used when rendering with no color buffer */
 608    ctx->dummy_rt = etna_bo_new(ctx->screen->dev, 64 * 64 * 4,
 609                                DRM_ETNA_GEM_CACHE_WC);
 610    if (!ctx->dummy_rt)
 611       goto fail;
 612
 613    ctx->dummy_rt_reloc.bo = ctx->dummy_rt;
 614    ctx->dummy_rt_reloc.offset = 0;
 615    ctx->dummy_rt_reloc.flags = ETNA_RELOC_READ | ETNA_RELOC_WRITE;
 616
 617    if (screen->specs.halti >= 5) {
 618       /* Create an empty dummy texture descriptor */
 619       ctx->dummy_desc_bo = etna_bo_new(ctx->screen->dev, 0x100, DRM_ETNA_GEM_CACHE_WC);
 620       if (!ctx->dummy_desc_bo)
 621          goto fail;
 622       uint32_t *buf = etna_bo_map(ctx->dummy_desc_bo);
 623       etna_bo_cpu_prep(ctx->dummy_desc_bo, DRM_ETNA_PREP_WRITE);
 624       memset(buf, 0, 0x100);
 625       etna_bo_cpu_fini(ctx->dummy_desc_bo);
 626       ctx->DUMMY_DESC_ADDR.bo = ctx->dummy_desc_bo;
 627       ctx->DUMMY_DESC_ADDR.offset = 0;
 628       ctx->DUMMY_DESC_ADDR.flags = ETNA_RELOC_READ;
 629    }
 630
 631    return pctx;
 632
 633 fail:
 634    pctx->destroy(pctx);
 635
 636    return NULL;
 637 }