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 inline void
  61 etna_emit_nop_with_data(struct etna_cmd_stream *stream, uint32_t value)
  62 {
  63    etna_cmd_stream_emit(stream, VIV_FE_NOP_HEADER_OP_NOP);
  64    etna_cmd_stream_emit(stream, value);
  65 }
  66
  67 static void
  68 etna_emit_string_marker(struct pipe_context *pctx, const char *string, int len)
  69 {
  70    struct etna_context *ctx = etna_context(pctx);
  71    struct etna_cmd_stream *stream = ctx->stream;
  72    const uint32_t *buf = (const void *)string;
  73
  74    etna_cmd_stream_reserve(stream, len * 2);
  75
  76    while (len >= 4) {
  77       etna_emit_nop_with_data(stream, *buf);
  78       buf++;
  79       len -= 4;
  80    }
  81
  82    /* copy remainder bytes without reading past end of input string */
  83    if (len > 0) {
  84       uint32_t w = 0;
  85       memcpy(&w, buf, len);
  86       etna_emit_nop_with_data(stream, w);
  87    }
  88 }
  89
  90 static void
  91 etna_context_destroy(struct pipe_context *pctx)
  92 {
  93    struct etna_context *ctx = etna_context(pctx);
  94
  95    mtx_lock(&ctx->lock);
  96    if (ctx->used_resources_read) {
  97
  98       /*
  99        * There should be no resources tracked in the context when it's being
 100        * destroyed. Be sure there are none to avoid memory leaks on buggy
 101        * programs.
 102        */
 103       set_foreach(ctx->used_resources_read, entry) {
 104          struct etna_resource *rsc = (struct etna_resource *)entry->key;
 105
 106          _mesa_set_remove_key(rsc->pending_ctx, ctx);
 107       }
 108       _mesa_set_destroy(ctx->used_resources_read, NULL);
 109
 110    }
 111    if (ctx->used_resources_write) {
 112
 113       /*
 114        * There should be no resources tracked in the context when it's being
 115        * destroyed. Be sure there are none to avoid memory leaks on buggy
 116        * programs.
 117        */
 118       set_foreach(ctx->used_resources_write, entry) {
 119          struct etna_resource *rsc = (struct etna_resource *)entry->key;
 120
 121          _mesa_set_remove_key(rsc->pending_ctx, ctx);
 122       }
 123       _mesa_set_destroy(ctx->used_resources_write, NULL);
 124
 125    }
 126    mtx_unlock(&ctx->lock);
 127
 128    if (ctx->dummy_rt)
 129       etna_bo_del(ctx->dummy_rt);
 130
 131    util_copy_framebuffer_state(&ctx->framebuffer_s, NULL);
 132
 133    if (ctx->primconvert)
 134       util_primconvert_destroy(ctx->primconvert);
 135
 136    if (ctx->blitter)
 137       util_blitter_destroy(ctx->blitter);
 138
 139    if (pctx->stream_uploader)
 140       u_upload_destroy(pctx->stream_uploader);
 141
 142    if (ctx->stream)
 143       etna_cmd_stream_del(ctx->stream);
 144
 145    slab_destroy_child(&ctx->transfer_pool);
 146
 147    if (ctx->in_fence_fd != -1)
 148       close(ctx->in_fence_fd);
 149
 150    mtx_destroy(&ctx->lock);
 151
 152    FREE(pctx);
 153 }
 154
 155 /* Update render state where needed based on draw operation */
 156 static void
 157 etna_update_state_for_draw(struct etna_context *ctx, const struct pipe_draw_info *info)
 158 {
 159    /* Handle primitive restart:
 160     * - If not an indexed draw, we don't care about the state of the primitive restart bit.
 161     * - Otherwise, set the bit in INDEX_STREAM_CONTROL in the index buffer state
 162     *   accordingly
 163     * - If the value of the INDEX_STREAM_CONTROL register changed due to this, or
 164     *   primitive restart is enabled and the restart index changed, mark the index
 165     *   buffer state as dirty
 166     */
 167
 168    if (info->index_size) {
 169       uint32_t new_control = ctx->index_buffer.FE_INDEX_STREAM_CONTROL;
 170
 171       if (info->primitive_restart)
 172          new_control |= VIVS_FE_INDEX_STREAM_CONTROL_PRIMITIVE_RESTART;
 173       else
 174          new_control &= ~VIVS_FE_INDEX_STREAM_CONTROL_PRIMITIVE_RESTART;
 175
 176       if (ctx->index_buffer.FE_INDEX_STREAM_CONTROL != new_control ||
 177           (info->primitive_restart && ctx->index_buffer.FE_PRIMITIVE_RESTART_INDEX != info->restart_index)) {
 178          ctx->index_buffer.FE_INDEX_STREAM_CONTROL = new_control;
 179          ctx->index_buffer.FE_PRIMITIVE_RESTART_INDEX = info->restart_index;
 180          ctx->dirty |= ETNA_DIRTY_INDEX_BUFFER;
 181       }
 182    }
 183 }
 184
 185 static bool
 186 etna_get_vs(struct etna_context *ctx, struct etna_shader_key key)
 187 {
 188    const struct etna_shader_variant *old = ctx->shader.vs;
 189
 190    ctx->shader.vs = etna_shader_variant(ctx->shader.bind_vs, key, &ctx->debug);
 191
 192    if (!ctx->shader.vs)
 193       return false;
 194
 195    if (old != ctx->shader.vs)
 196       ctx->dirty |= ETNA_DIRTY_SHADER;
 197
 198    return true;
 199 }
 200
 201 static bool
 202 etna_get_fs(struct etna_context *ctx, struct etna_shader_key key)
 203 {
 204    const struct etna_shader_variant *old = ctx->shader.fs;
 205
 206    ctx->shader.fs = etna_shader_variant(ctx->shader.bind_fs, key, &ctx->debug);
 207
 208    if (!ctx->shader.fs)
 209       return false;
 210
 211    if (old != ctx->shader.fs)
 212       ctx->dirty |= ETNA_DIRTY_SHADER;
 213
 214    return true;
 215 }
 216
 217 static void
 218 etna_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
 219 {
 220    struct etna_context *ctx = etna_context(pctx);
 221    struct pipe_framebuffer_state *pfb = &ctx->framebuffer_s;
 222    uint32_t draw_mode;
 223    unsigned i;
 224
 225    if (!info->count_from_stream_output && !info->indirect &&
 226        !info->primitive_restart &&
 227        !u_trim_pipe_prim(info->mode, (unsigned*)&info->count))
 228       return;
 229
 230    if (ctx->vertex_elements == NULL || ctx->vertex_elements->num_elements == 0)
 231       return; /* Nothing to do */
 232
 233    if (!(ctx->prim_hwsupport & (1 << info->mode))) {
 234       struct primconvert_context *primconvert = ctx->primconvert;
 235       util_primconvert_save_rasterizer_state(primconvert, ctx->rasterizer);
 236       util_primconvert_draw_vbo(primconvert, info);
 237       return;
 238    }
 239
 240    int prims = u_decomposed_prims_for_vertices(info->mode, info->count);
 241    if (unlikely(prims <= 0)) {
 242       DBG("Invalid draw primitive mode=%i or no primitives to be drawn", info->mode);
 243       return;
 244    }
 245
 246    draw_mode = translate_draw_mode(info->mode);
 247    if (draw_mode == ETNA_NO_MATCH) {
 248       BUG("Unsupported draw mode");
 249       return;
 250    }
 251
 252    /* Upload a user index buffer. */
 253    unsigned index_offset = 0;
 254    struct pipe_resource *indexbuf = NULL;
 255
 256    if (info->index_size) {
 257       indexbuf = info->has_user_indices ? NULL : info->index.resource;
 258       if (info->has_user_indices &&
 259           !util_upload_index_buffer(pctx, info, &indexbuf, &index_offset, 4)) {
 260          BUG("Index buffer upload failed.");
 261          return;
 262       }
 263       /* Add start to index offset, when rendering indexed */
 264       index_offset += info->start * info->index_size;
 265
 266       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.bo = etna_resource(indexbuf)->bo;
 267       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.offset = index_offset;
 268       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.flags = ETNA_RELOC_READ;
 269       ctx->index_buffer.FE_INDEX_STREAM_CONTROL = translate_index_size(info->index_size);
 270
 271       if (!ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.bo) {
 272          BUG("Unsupported or no index buffer");
 273          return;
 274       }
 275    } else {
 276       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.bo = 0;
 277       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.offset = 0;
 278       ctx->index_buffer.FE_INDEX_STREAM_BASE_ADDR.flags = 0;
 279       ctx->index_buffer.FE_INDEX_STREAM_CONTROL = 0;
 280    }
 281    ctx->dirty |= ETNA_DIRTY_INDEX_BUFFER;
 282
 283    struct etna_shader_key key = {
 284       .front_ccw = ctx->rasterizer->front_ccw,
 285    };
 286
 287    if (pfb->cbufs[0])
 288       key.frag_rb_swap = !!translate_pe_format_rb_swap(pfb->cbufs[0]->format);
 289
 290    if (!etna_get_vs(ctx, key) || !etna_get_fs(ctx, key)) {
 291       BUG("compiled shaders are not okay");
 292       return;
 293    }
 294
 295    /* Update any derived state */
 296    if (!etna_state_update(ctx))
 297       return;
 298
 299    mtx_lock(&ctx->lock);
 300
 301    /*
 302     * Figure out the buffers/features we need:
 303     */
 304    if (etna_depth_enabled(ctx))
 305       resource_written(ctx, pfb->zsbuf->texture);
 306
 307    if (etna_stencil_enabled(ctx))
 308       resource_written(ctx, pfb->zsbuf->texture);
 309
 310    for (i = 0; i < pfb->nr_cbufs; i++) {
 311       struct pipe_resource *surf;
 312
 313       if (!pfb->cbufs[i])
 314          continue;
 315
 316       surf = pfb->cbufs[i]->texture;
 317       resource_written(ctx, surf);
 318    }
 319
 320    /* Mark constant buffers as being read */
 321    foreach_bit(i, ctx->constant_buffer[PIPE_SHADER_VERTEX].enabled_mask)
 322       resource_read(ctx, ctx->constant_buffer[PIPE_SHADER_VERTEX].cb[i].buffer);
 323
 324    foreach_bit(i, ctx->constant_buffer[PIPE_SHADER_FRAGMENT].enabled_mask)
 325       resource_read(ctx, ctx->constant_buffer[PIPE_SHADER_FRAGMENT].cb[i].buffer);
 326
 327    /* Mark VBOs as being read */
 328    foreach_bit(i, ctx->vertex_buffer.enabled_mask) {
 329       assert(!ctx->vertex_buffer.vb[i].is_user_buffer);
 330       resource_read(ctx, ctx->vertex_buffer.vb[i].buffer.resource);
 331    }
 332
 333    /* Mark index buffer as being read */
 334    resource_read(ctx, indexbuf);
 335
 336    /* Mark textures as being read */
 337    for (i = 0; i < PIPE_MAX_SAMPLERS; i++) {
 338       if (ctx->sampler_view[i]) {
 339           resource_read(ctx, ctx->sampler_view[i]->texture);
 340
 341          /* if texture was modified since the last update,
 342           * we need to clear the texture cache and possibly
 343           * resolve/update ts
 344           */
 345          etna_update_sampler_source(ctx->sampler_view[i], i);
 346       }
 347    }
 348
 349    list_for_each_entry(struct etna_hw_query, hq, &ctx->active_hw_queries, node)
 350       resource_written(ctx, hq->prsc);
 351
 352    ctx->stats.prims_emitted += u_reduced_prims_for_vertices(info->mode, info->count);
 353    ctx->stats.draw_calls++;
 354
 355    /* Update state for this draw operation */
 356    etna_update_state_for_draw(ctx, info);
 357
 358    /* First, sync state, then emit DRAW_PRIMITIVES or DRAW_INDEXED_PRIMITIVES */
 359    etna_emit_state(ctx);
 360
 361    if (ctx->specs.halti >= 2) {
 362       /* On HALTI2+ (GC3000 and higher) only use instanced drawing commands, as the blob does */
 363       etna_draw_instanced(ctx->stream, info->index_size, draw_mode, info->instance_count,
 364          info->count, info->index_size ? info->index_bias : info->start);
 365    } else {
 366       if (info->index_size)
 367          etna_draw_indexed_primitives(ctx->stream, draw_mode, 0, prims, info->index_bias);
 368       else
 369          etna_draw_primitives(ctx->stream, draw_mode, info->start, prims);
 370    }
 371
 372    if (DBG_ENABLED(ETNA_DBG_DRAW_STALL)) {
 373       /* Stall the FE after every draw operation.  This allows better
 374        * debug of GPU hang conditions, as the FE will indicate which
 375        * draw op has caused the hang. */
 376       etna_stall(ctx->stream, SYNC_RECIPIENT_FE, SYNC_RECIPIENT_PE);
 377    }
 378    mtx_unlock(&ctx->lock);
 379
 380    if (DBG_ENABLED(ETNA_DBG_FLUSH_ALL))
 381       pctx->flush(pctx, NULL, 0);
 382
 383    if (ctx->framebuffer_s.cbufs[0])
 384       etna_resource(ctx->framebuffer_s.cbufs[0]->texture)->seqno++;
 385    if (ctx->framebuffer_s.zsbuf)
 386       etna_resource(ctx->framebuffer_s.zsbuf->texture)->seqno++;
 387    if (info->index_size && indexbuf != info->index.resource)
 388       pipe_resource_reference(&indexbuf, NULL);
 389 }
 390
 391 static void
 392 etna_reset_gpu_state(struct etna_context *ctx)
 393 {
 394    struct etna_cmd_stream *stream = ctx->stream;
 395
 396    etna_set_state(stream, VIVS_GL_API_MODE, VIVS_GL_API_MODE_OPENGL);
 397    etna_set_state(stream, VIVS_GL_VERTEX_ELEMENT_CONFIG, 0x00000001);
 398    /* blob sets this to 0x40000031 on GC7000, seems to make no difference,
 399     * but keep it in mind if depth behaves strangely. */
 400    etna_set_state(stream, VIVS_RA_EARLY_DEPTH, 0x00000031);
 401    etna_set_state(stream, VIVS_PA_W_CLIP_LIMIT, 0x34000001);
 402    etna_set_state(stream, VIVS_PA_FLAGS, 0x00000000); /* blob sets ZCONVERT_BYPASS on GC3000+, this messes up z for us */
 403    etna_set_state(stream, VIVS_PA_VIEWPORT_UNK00A80, 0x38a01404);
 404    etna_set_state(stream, VIVS_PA_VIEWPORT_UNK00A84, fui(8192.0));
 405    etna_set_state(stream, VIVS_PA_ZFARCLIPPING, 0x00000000);
 406    etna_set_state(stream, VIVS_RA_HDEPTH_CONTROL, 0x00007000);
 407    etna_set_state(stream, VIVS_PS_CONTROL_EXT, 0x00000000);
 408
 409    /* There is no HALTI0 specific state */
 410    if (ctx->specs.halti >= 1) { /* Only on HALTI1+ */
 411       etna_set_state(stream, VIVS_VS_HALTI1_UNK00884, 0x00000808);
 412    }
 413    if (ctx->specs.halti >= 2) { /* Only on HALTI2+ */
 414       etna_set_state(stream, VIVS_RA_UNK00E0C, 0x00000000);
 415    }
 416    if (ctx->specs.halti >= 3) { /* Only on HALTI3+ */
 417       etna_set_state(stream, VIVS_PS_HALTI3_UNK0103C, 0x76543210);
 418    }
 419    if (ctx->specs.halti >= 4) { /* Only on HALTI4+ */
 420       etna_set_state(stream, VIVS_PS_MSAA_CONFIG, 0x6fffffff & 0xf70fffff & 0xfff6ffff &
 421                                                   0xffff6fff & 0xfffff6ff & 0xffffff7f);
 422       etna_set_state(stream, VIVS_PE_HALTI4_UNK014C0, 0x00000000);
 423    }
 424    if (ctx->specs.halti >= 5) { /* Only on HALTI5+ */
 425       etna_set_state(stream, VIVS_NTE_DESCRIPTOR_UNK14C40, 0x00000001);
 426       etna_set_state(stream, VIVS_FE_HALTI5_UNK007D8, 0x00000002);
 427       etna_set_state(stream, VIVS_FE_HALTI5_ID_CONFIG, 0x00000000);
 428       etna_set_state(stream, VIVS_PS_SAMPLER_BASE, 0x00000000);
 429       etna_set_state(stream, VIVS_VS_SAMPLER_BASE, 0x00000020);
 430       etna_set_state(stream, VIVS_SH_CONFIG, VIVS_SH_CONFIG_RTNE_ROUNDING);
 431    } else { /* Only on pre-HALTI5 */
 432       etna_set_state(stream, VIVS_GL_UNK03838, 0x00000000);
 433       etna_set_state(stream, VIVS_GL_UNK03854, 0x00000000);
 434    }
 435
 436    if (!ctx->specs.use_blt) {
 437       /* Enable SINGLE_BUFFER for resolve, if supported */
 438       etna_set_state(stream, VIVS_RS_SINGLE_BUFFER, COND(ctx->specs.single_buffer, VIVS_RS_SINGLE_BUFFER_ENABLE));
 439    }
 440
 441    if (ctx->specs.halti >= 5) {
 442       /* TXDESC cache flush - do this once at the beginning, as texture
 443        * descriptors are only written by the CPU once, then patched by the kernel
 444        * before command stream submission. It does not need flushing if the
 445        * referenced image data changes.
 446        */
 447       etna_set_state(stream, VIVS_NTE_DESCRIPTOR_FLUSH, 0);
 448       etna_set_state(stream, VIVS_GL_FLUSH_CACHE,
 449             VIVS_GL_FLUSH_CACHE_DESCRIPTOR_UNK12 |
 450             VIVS_GL_FLUSH_CACHE_DESCRIPTOR_UNK13);
 451
 452       /* Icache invalidate (should do this on shader change?) */
 453       etna_set_state(stream, VIVS_VS_ICACHE_INVALIDATE,
 454             VIVS_VS_ICACHE_INVALIDATE_UNK0 | VIVS_VS_ICACHE_INVALIDATE_UNK1 |
 455             VIVS_VS_ICACHE_INVALIDATE_UNK2 | VIVS_VS_ICACHE_INVALIDATE_UNK3 |
 456             VIVS_VS_ICACHE_INVALIDATE_UNK4);
 457    }
 458
 459    ctx->dirty = ~0L;
 460    ctx->dirty_sampler_views = ~0L;
 461 }
 462
 463 static void
 464 etna_flush(struct pipe_context *pctx, struct pipe_fence_handle **fence,
 465            enum pipe_flush_flags flags)
 466 {
 467    struct etna_context *ctx = etna_context(pctx);
 468    int out_fence_fd = -1;
 469
 470    mtx_lock(&ctx->lock);
 471
 472    list_for_each_entry(struct etna_hw_query, hq, &ctx->active_hw_queries, node)
 473       etna_hw_query_suspend(hq, ctx);
 474
 475    etna_cmd_stream_flush(ctx->stream, ctx->in_fence_fd,
 476                           (flags & PIPE_FLUSH_FENCE_FD) ? &out_fence_fd : NULL);
 477
 478    list_for_each_entry(struct etna_hw_query, hq, &ctx->active_hw_queries, node)
 479       etna_hw_query_resume(hq, ctx);
 480
 481    if (fence)
 482       *fence = etna_fence_create(pctx, out_fence_fd);
 483
 484    /*
 485    * Go through all _resources_ pending in this _context_ and mark them as
 486    * not pending in this _context_ anymore, since they were just flushed.
 487    */
 488    set_foreach(ctx->used_resources_read, entry) {
 489       struct etna_resource *rsc = (struct etna_resource *)entry->key;
 490       struct pipe_resource *referenced = &rsc->base;
 491
 492       _mesa_set_remove_key(rsc->pending_ctx, ctx);
 493
 494       /* if resource has no pending ctx's reset its status */
 495       if (_mesa_set_next_entry(rsc->pending_ctx, NULL) == NULL)
 496          rsc->status &= ~ETNA_PENDING_READ;
 497
 498       pipe_resource_reference(&referenced, NULL);
 499    }
 500    _mesa_set_clear(ctx->used_resources_read, NULL);
 501
 502    set_foreach(ctx->used_resources_write, entry) {
 503       struct etna_resource *rsc = (struct etna_resource *)entry->key;
 504       struct pipe_resource *referenced = &rsc->base;
 505
 506       _mesa_set_remove_key(rsc->pending_ctx, ctx);
 507
 508       /* if resource has no pending ctx's reset its status */
 509       if (_mesa_set_next_entry(rsc->pending_ctx, NULL) == NULL)
 510          rsc->status &= ~ETNA_PENDING_WRITE;
 511
 512       pipe_resource_reference(&referenced, NULL);
 513    }
 514    _mesa_set_clear(ctx->used_resources_write, NULL);
 515
 516    etna_reset_gpu_state(ctx);
 517    mtx_unlock(&ctx->lock);
 518 }
 519
 520 static void
 521 etna_context_force_flush(struct etna_cmd_stream *stream, void *priv)
 522 {
 523    struct pipe_context *pctx = priv;
 524
 525    pctx->flush(pctx, NULL, 0);
 526
 527 }
 528
 529 static void
 530 etna_set_debug_callback(struct pipe_context *pctx,
 531                         const struct pipe_debug_callback *cb)
 532 {
 533    struct etna_context *ctx = etna_context(pctx);
 534
 535    if (cb)
 536       ctx->debug = *cb;
 537    else
 538       memset(&ctx->debug, 0, sizeof(ctx->debug));
 539 }
 540
 541 struct pipe_context *
 542 etna_context_create(struct pipe_screen *pscreen, void *priv, unsigned flags)
 543 {
 544    struct etna_context *ctx = CALLOC_STRUCT(etna_context);
 545    struct etna_screen *screen;
 546    struct pipe_context *pctx;
 547
 548    if (ctx == NULL)
 549       return NULL;
 550
 551    pctx = &ctx->base;
 552    pctx->priv = ctx;
 553    pctx->screen = pscreen;
 554    pctx->stream_uploader = u_upload_create_default(pctx);
 555    if (!pctx->stream_uploader)
 556       goto fail;
 557    pctx->const_uploader = pctx->stream_uploader;
 558
 559    screen = etna_screen(pscreen);
 560    ctx->stream = etna_cmd_stream_new(screen->pipe, 0x2000,
 561                                      &etna_context_force_flush, pctx);
 562    if (ctx->stream == NULL)
 563       goto fail;
 564
 565    ctx->used_resources_read = _mesa_set_create(NULL, _mesa_hash_pointer,
 566                                           _mesa_key_pointer_equal);
 567    if (!ctx->used_resources_read)
 568       goto fail;
 569
 570    ctx->used_resources_write = _mesa_set_create(NULL, _mesa_hash_pointer,
 571                                           _mesa_key_pointer_equal);
 572    if (!ctx->used_resources_write)
 573       goto fail;
 574
 575    mtx_init(&ctx->lock, mtx_recursive);
 576
 577    /* context ctxate setup */
 578    ctx->specs = screen->specs;
 579    ctx->screen = screen;
 580    /* need some sane default in case state tracker doesn't set some state: */
 581    ctx->sample_mask = 0xffff;
 582
 583    /*  Set sensible defaults for state */
 584    etna_reset_gpu_state(ctx);
 585
 586    ctx->in_fence_fd = -1;
 587
 588    pctx->destroy = etna_context_destroy;
 589    pctx->draw_vbo = etna_draw_vbo;
 590    pctx->flush = etna_flush;
 591    pctx->set_debug_callback = etna_set_debug_callback;
 592    pctx->create_fence_fd = etna_create_fence_fd;
 593    pctx->fence_server_sync = etna_fence_server_sync;
 594    pctx->emit_string_marker = etna_emit_string_marker;
 595
 596    /* creation of compile states */
 597    pctx->create_blend_state = etna_blend_state_create;
 598    pctx->create_rasterizer_state = etna_rasterizer_state_create;
 599    pctx->create_depth_stencil_alpha_state = etna_zsa_state_create;
 600
 601    etna_clear_blit_init(pctx);
 602    etna_query_context_init(pctx);
 603    etna_state_init(pctx);
 604    etna_surface_init(pctx);
 605    etna_shader_init(pctx);
 606    etna_texture_init(pctx);
 607    etna_transfer_init(pctx);
 608
 609    ctx->blitter = util_blitter_create(pctx);
 610    if (!ctx->blitter)
 611       goto fail;
 612
 613    /* Generate the bitmask of supported draw primitives. */
 614    ctx->prim_hwsupport = 1 << PIPE_PRIM_POINTS |
 615                          1 << PIPE_PRIM_LINES |
 616                          1 << PIPE_PRIM_LINE_STRIP |
 617                          1 << PIPE_PRIM_TRIANGLES |
 618                          1 << PIPE_PRIM_TRIANGLE_FAN;
 619
 620    /* TODO: The bug relates only to indexed draws, but here we signal
 621     * that there is no support for triangle strips at all. This should
 622     * be refined.
 623     */
 624    if (VIV_FEATURE(ctx->screen, chipMinorFeatures2, BUG_FIXES8))
 625       ctx->prim_hwsupport |= 1 << PIPE_PRIM_TRIANGLE_STRIP;
 626
 627    if (VIV_FEATURE(ctx->screen, chipMinorFeatures2, LINE_LOOP))
 628       ctx->prim_hwsupport |= 1 << PIPE_PRIM_LINE_LOOP;
 629
 630    ctx->primconvert = util_primconvert_create(pctx, ctx->prim_hwsupport);
 631    if (!ctx->primconvert)
 632       goto fail;
 633
 634    slab_create_child(&ctx->transfer_pool, &screen->transfer_pool);
 635    list_inithead(&ctx->active_hw_queries);
 636
 637    /* create dummy RT buffer, used when rendering with no color buffer */
 638    ctx->dummy_rt = etna_bo_new(ctx->screen->dev, 64 * 64 * 4,
 639                                DRM_ETNA_GEM_CACHE_WC);
 640    if (!ctx->dummy_rt)
 641       goto fail;
 642
 643    ctx->dummy_rt_reloc.bo = ctx->dummy_rt;
 644    ctx->dummy_rt_reloc.offset = 0;
 645    ctx->dummy_rt_reloc.flags = ETNA_RELOC_READ | ETNA_RELOC_WRITE;
 646
 647    if (screen->specs.halti >= 5) {
 648       /* Create an empty dummy texture descriptor */
 649       ctx->dummy_desc_bo = etna_bo_new(ctx->screen->dev, 0x100, DRM_ETNA_GEM_CACHE_WC);
 650       if (!ctx->dummy_desc_bo)
 651          goto fail;
 652       uint32_t *buf = etna_bo_map(ctx->dummy_desc_bo);
 653       etna_bo_cpu_prep(ctx->dummy_desc_bo, DRM_ETNA_PREP_WRITE);
 654       memset(buf, 0, 0x100);
 655       etna_bo_cpu_fini(ctx->dummy_desc_bo);
 656       ctx->DUMMY_DESC_ADDR.bo = ctx->dummy_desc_bo;
 657       ctx->DUMMY_DESC_ADDR.offset = 0;
 658       ctx->DUMMY_DESC_ADDR.flags = ETNA_RELOC_READ;
 659    }
 660
 661    return pctx;
 662
 663 fail:
 664    pctx->destroy(pctx);
 665
 666    return NULL;
 667 }