src/mesa/drivers/dri/i965/gen6_queryobj.c

   1 /*
   2  * Copyright © 2008 Intel Corporation
   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, sublicense,
   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 next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * 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 NONINFRINGEMENT.  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 DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Eric Anholt <eric@anholt.net>
  25  *    Kenneth Graunke <kenneth@whitecape.org>
  26  */
  27
  28 /** @file gen6_queryobj.c
  29  *
  30  * Support for query objects (GL_ARB_occlusion_query, GL_ARB_timer_query,
  31  * GL_EXT_transform_feedback, and friends) on platforms that support
  32  * hardware contexts (Gen6+).
  33  */
  34 #include "main/imports.h"
  35
  36 #include "brw_context.h"
  37 #include "brw_defines.h"
  38 #include "brw_state.h"
  39 #include "intel_batchbuffer.h"
  40 #include "intel_buffer_objects.h"
  41
  42 static inline void
  43 set_query_availability(struct brw_context *brw, struct brw_query_object *query,
  44                        bool available)
  45 {
  46    /* For platforms that support ARB_query_buffer_object, we write the
  47     * query availability for "pipelined" queries.
  48     *
  49     * Most counter snapshots are written by the command streamer, by
  50     * doing a CS stall and then MI_STORE_REGISTER_MEM.  For these
  51     * counters, the CS stall guarantees that the results will be
  52     * available when subsequent CS commands run.  So we don't need to
  53     * do any additional tracking.
  54     *
  55     * Other counters (occlusion queries and timestamp) are written by
  56     * PIPE_CONTROL, without a CS stall.  This means that we can't be
  57     * sure whether the writes have landed yet or not.  Performing a
  58     * PIPE_CONTROL with an immediate write will synchronize with
  59     * those earlier writes, so we write 1 when the value has landed.
  60     */
  61    if (brw->ctx.Extensions.ARB_query_buffer_object &&
  62        brw_is_query_pipelined(query)) {
  63       unsigned flags = PIPE_CONTROL_WRITE_IMMEDIATE;
  64
  65       if (available) {
  66          /* Order available *after* the query results. */
  67          flags |= PIPE_CONTROL_FLUSH_ENABLE;
  68       } else {
  69          /* Make it unavailable *before* any pipelined reads. */
  70          flags |= PIPE_CONTROL_CS_STALL;
  71       }
  72
  73       brw_emit_pipe_control_write(brw, flags,
  74                                   query->bo, 2 * sizeof(uint64_t),
  75                                   available);
  76    }
  77 }
  78
  79 static void
  80 write_primitives_generated(struct brw_context *brw,
  81                            struct brw_bo *query_bo, int stream, int idx)
  82 {
  83    brw_emit_mi_flush(brw);
  84
  85    if (brw->gen >= 7 && stream > 0) {
  86       brw_store_register_mem64(brw, query_bo,
  87                                GEN7_SO_PRIM_STORAGE_NEEDED(stream),
  88                                idx * sizeof(uint64_t));
  89    } else {
  90       brw_store_register_mem64(brw, query_bo, CL_INVOCATION_COUNT,
  91                                idx * sizeof(uint64_t));
  92    }
  93 }
  94
  95 static void
  96 write_xfb_primitives_written(struct brw_context *brw,
  97                              struct brw_bo *bo, int stream, int idx)
  98 {
  99    brw_emit_mi_flush(brw);
 100
 101    if (brw->gen >= 7) {
 102       brw_store_register_mem64(brw, bo, GEN7_SO_NUM_PRIMS_WRITTEN(stream),
 103                                idx * sizeof(uint64_t));
 104    } else {
 105       brw_store_register_mem64(brw, bo, GEN6_SO_NUM_PRIMS_WRITTEN,
 106                                idx * sizeof(uint64_t));
 107    }
 108 }
 109
 110 static void
 111 write_xfb_overflow_streams(struct gl_context *ctx,
 112                            struct brw_bo *bo, int stream, int count,
 113                            int idx)
 114 {
 115    struct brw_context *brw = brw_context(ctx);
 116
 117    brw_emit_mi_flush(brw);
 118
 119    for (int i = 0; i < count; i++) {
 120       int w_idx = 4 * i + idx;
 121       int g_idx = 4 * i + idx + 2;
 122
 123       if (brw->gen >= 7) {
 124          brw_store_register_mem64(brw, bo,
 125                                   GEN7_SO_NUM_PRIMS_WRITTEN(stream + i),
 126                                   g_idx * sizeof(uint64_t));
 127          brw_store_register_mem64(brw, bo,
 128                                   GEN7_SO_PRIM_STORAGE_NEEDED(stream + i),
 129                                   w_idx * sizeof(uint64_t));
 130       } else {
 131          brw_store_register_mem64(brw, bo,
 132                                   GEN6_SO_NUM_PRIMS_WRITTEN,
 133                                   g_idx * sizeof(uint64_t));
 134          brw_store_register_mem64(brw, bo,
 135                                   GEN6_SO_PRIM_STORAGE_NEEDED,
 136                                   w_idx * sizeof(uint64_t));
 137       }
 138    }
 139 }
 140
 141 static bool
 142 check_xfb_overflow_streams(uint64_t *results, int count)
 143 {
 144    bool overflow = false;
 145
 146    for (int i = 0; i < count; i++) {
 147       uint64_t *result_i = &results[4 * i];
 148
 149       if ((result_i[3] - result_i[2]) != (result_i[1] - result_i[0])) {
 150          overflow = true;
 151          break;
 152       }
 153    }
 154
 155    return overflow;
 156 }
 157
 158 static inline int
 159 pipeline_target_to_index(int target)
 160 {
 161    if (target == GL_GEOMETRY_SHADER_INVOCATIONS)
 162       return MAX_PIPELINE_STATISTICS - 1;
 163    else
 164       return target - GL_VERTICES_SUBMITTED_ARB;
 165 }
 166
 167 static void
 168 emit_pipeline_stat(struct brw_context *brw, struct brw_bo *bo,
 169                    int stream, int target, int idx)
 170 {
 171    /* One source of confusion is the tessellation shader statistics. The
 172     * hardware has no statistics specific to the TE unit. Ideally we could have
 173     * the HS primitives for TESS_CONTROL_SHADER_PATCHES_ARB, and the DS
 174     * invocations as the register for TESS_CONTROL_SHADER_PATCHES_ARB.
 175     * Unfortunately we don't have HS primitives, we only have HS invocations.
 176     */
 177
 178    /* Everything except GEOMETRY_SHADER_INVOCATIONS can be kept in a simple
 179     * lookup table
 180     */
 181    static const uint32_t target_to_register[] = {
 182       IA_VERTICES_COUNT,   /* VERTICES_SUBMITTED */
 183       IA_PRIMITIVES_COUNT, /* PRIMITIVES_SUBMITTED */
 184       VS_INVOCATION_COUNT, /* VERTEX_SHADER_INVOCATIONS */
 185       HS_INVOCATION_COUNT, /* TESS_CONTROL_SHADER_PATCHES */
 186       DS_INVOCATION_COUNT, /* TESS_EVALUATION_SHADER_INVOCATIONS */
 187       GS_PRIMITIVES_COUNT, /* GEOMETRY_SHADER_PRIMITIVES_EMITTED */
 188       PS_INVOCATION_COUNT, /* FRAGMENT_SHADER_INVOCATIONS */
 189       CS_INVOCATION_COUNT, /* COMPUTE_SHADER_INVOCATIONS */
 190       CL_INVOCATION_COUNT, /* CLIPPING_INPUT_PRIMITIVES */
 191       CL_PRIMITIVES_COUNT, /* CLIPPING_OUTPUT_PRIMITIVES */
 192       GS_INVOCATION_COUNT /* This one is special... */
 193    };
 194    STATIC_ASSERT(ARRAY_SIZE(target_to_register) == MAX_PIPELINE_STATISTICS);
 195    uint32_t reg = target_to_register[pipeline_target_to_index(target)];
 196    /* Gen6 GS code counts full primitives, that is, it won't count individual
 197     * triangles in a triangle strip. Use CL_INVOCATION_COUNT for that.
 198     */
 199    if (brw->gen == 6 && target == GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB)
 200       reg = CL_INVOCATION_COUNT;
 201    assert(reg != 0);
 202
 203    /* Emit a flush to make sure various parts of the pipeline are complete and
 204     * we get an accurate value
 205     */
 206    brw_emit_mi_flush(brw);
 207
 208    brw_store_register_mem64(brw, bo, reg, idx * sizeof(uint64_t));
 209 }
 210
 211
 212 /**
 213  * Wait on the query object's BO and calculate the final result.
 214  */
 215 static void
 216 gen6_queryobj_get_results(struct gl_context *ctx,
 217                           struct brw_query_object *query)
 218 {
 219    struct brw_context *brw = brw_context(ctx);
 220
 221    if (query->bo == NULL)
 222       return;
 223
 224    uint64_t *results = brw_bo_map(brw, query->bo, MAP_READ);
 225    switch (query->Base.Target) {
 226    case GL_TIME_ELAPSED:
 227       /* The query BO contains the starting and ending timestamps.
 228        * Subtract the two and convert to nanoseconds.
 229        */
 230       query->Base.Result = brw_raw_timestamp_delta(brw, results[0], results[1]);
 231       query->Base.Result = brw_timebase_scale(brw, query->Base.Result);
 232       break;
 233
 234    case GL_TIMESTAMP:
 235       /* The query BO contains a single timestamp value in results[0]. */
 236       query->Base.Result = brw_timebase_scale(brw, results[0]);
 237
 238       /* Ensure the scaled timestamp overflows according to
 239        * GL_QUERY_COUNTER_BITS
 240        */
 241       query->Base.Result &= (1ull << ctx->Const.QueryCounterBits.Timestamp) - 1;
 242       break;
 243
 244    case GL_SAMPLES_PASSED_ARB:
 245       /* We need to use += rather than = here since some BLT-based operations
 246        * may have added additional samples to our occlusion query value.
 247        */
 248       query->Base.Result += results[1] - results[0];
 249       break;
 250
 251    case GL_ANY_SAMPLES_PASSED:
 252    case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
 253       if (results[0] != results[1])
 254          query->Base.Result = true;
 255       break;
 256
 257    case GL_PRIMITIVES_GENERATED:
 258    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
 259    case GL_VERTICES_SUBMITTED_ARB:
 260    case GL_PRIMITIVES_SUBMITTED_ARB:
 261    case GL_VERTEX_SHADER_INVOCATIONS_ARB:
 262    case GL_GEOMETRY_SHADER_INVOCATIONS:
 263    case GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB:
 264    case GL_CLIPPING_INPUT_PRIMITIVES_ARB:
 265    case GL_CLIPPING_OUTPUT_PRIMITIVES_ARB:
 266    case GL_COMPUTE_SHADER_INVOCATIONS_ARB:
 267    case GL_TESS_CONTROL_SHADER_PATCHES_ARB:
 268    case GL_TESS_EVALUATION_SHADER_INVOCATIONS_ARB:
 269       query->Base.Result = results[1] - results[0];
 270       break;
 271
 272    case GL_TRANSFORM_FEEDBACK_STREAM_OVERFLOW_ARB:
 273       query->Base.Result = check_xfb_overflow_streams(results, 1);
 274       break;
 275
 276    case GL_TRANSFORM_FEEDBACK_OVERFLOW_ARB:
 277       query->Base.Result = check_xfb_overflow_streams(results, MAX_VERTEX_STREAMS);
 278       break;
 279
 280    case GL_FRAGMENT_SHADER_INVOCATIONS_ARB:
 281       query->Base.Result = (results[1] - results[0]);
 282       /* Implement the "WaDividePSInvocationCountBy4:HSW,BDW" workaround:
 283        * "Invocation counter is 4 times actual.  WA: SW to divide HW reported
 284        *  PS Invocations value by 4."
 285        *
 286        * Prior to Haswell, invocation count was counted by the WM, and it
 287        * buggily counted invocations in units of subspans (2x2 unit). To get the
 288        * correct value, the CS multiplied this by 4. With HSW the logic moved,
 289        * and correctly emitted the number of pixel shader invocations, but,
 290        * whomever forgot to undo the multiply by 4.
 291        */
 292       if (brw->gen == 8 || brw->is_haswell)
 293          query->Base.Result /= 4;
 294       break;
 295
 296    default:
 297       unreachable("Unrecognized query target in brw_queryobj_get_results()");
 298    }
 299    brw_bo_unmap(query->bo);
 300
 301    /* Now that we've processed the data stored in the query's buffer object,
 302     * we can release it.
 303     */
 304    brw_bo_unreference(query->bo);
 305    query->bo = NULL;
 306
 307    query->Base.Ready = true;
 308 }
 309
 310 /**
 311  * Driver hook for glBeginQuery().
 312  *
 313  * Initializes driver structures and emits any GPU commands required to begin
 314  * recording data for the query.
 315  */
 316 static void
 317 gen6_begin_query(struct gl_context *ctx, struct gl_query_object *q)
 318 {
 319    struct brw_context *brw = brw_context(ctx);
 320    struct brw_query_object *query = (struct brw_query_object *)q;
 321
 322    /* Since we're starting a new query, we need to throw away old results. */
 323    brw_bo_unreference(query->bo);
 324    query->bo = brw_bo_alloc(brw->bufmgr, "query results", 4096, 4096);
 325
 326    /* For ARB_query_buffer_object: The result is not available */
 327    set_query_availability(brw, query, false);
 328
 329    switch (query->Base.Target) {
 330    case GL_TIME_ELAPSED:
 331       /* For timestamp queries, we record the starting time right away so that
 332        * we measure the full time between BeginQuery and EndQuery.  There's
 333        * some debate about whether this is the right thing to do.  Our decision
 334        * is based on the following text from the ARB_timer_query extension:
 335        *
 336        * "(5) Should the extension measure total time elapsed between the full
 337        *      completion of the BeginQuery and EndQuery commands, or just time
 338        *      spent in the graphics library?
 339        *
 340        *  RESOLVED:  This extension will measure the total time elapsed
 341        *  between the full completion of these commands.  Future extensions
 342        *  may implement a query to determine time elapsed at different stages
 343        *  of the graphics pipeline."
 344        *
 345        * We write a starting timestamp now (at index 0).  At EndQuery() time,
 346        * we'll write a second timestamp (at index 1), and subtract the two to
 347        * obtain the time elapsed.  Notably, this includes time elapsed while
 348        * the system was doing other work, such as running other applications.
 349        */
 350       brw_write_timestamp(brw, query->bo, 0);
 351       break;
 352
 353    case GL_ANY_SAMPLES_PASSED:
 354    case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
 355    case GL_SAMPLES_PASSED_ARB:
 356       brw_write_depth_count(brw, query->bo, 0);
 357       break;
 358
 359    case GL_PRIMITIVES_GENERATED:
 360       write_primitives_generated(brw, query->bo, query->Base.Stream, 0);
 361       if (query->Base.Stream == 0)
 362          ctx->NewDriverState |= BRW_NEW_RASTERIZER_DISCARD;
 363       break;
 364
 365    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
 366       write_xfb_primitives_written(brw, query->bo, query->Base.Stream, 0);
 367       break;
 368
 369    case GL_TRANSFORM_FEEDBACK_STREAM_OVERFLOW_ARB:
 370       write_xfb_overflow_streams(ctx, query->bo, query->Base.Stream, 1, 0);
 371       break;
 372
 373    case GL_TRANSFORM_FEEDBACK_OVERFLOW_ARB:
 374       write_xfb_overflow_streams(ctx, query->bo, 0, MAX_VERTEX_STREAMS, 0);
 375       break;
 376
 377    case GL_VERTICES_SUBMITTED_ARB:
 378    case GL_PRIMITIVES_SUBMITTED_ARB:
 379    case GL_VERTEX_SHADER_INVOCATIONS_ARB:
 380    case GL_GEOMETRY_SHADER_INVOCATIONS:
 381    case GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB:
 382    case GL_FRAGMENT_SHADER_INVOCATIONS_ARB:
 383    case GL_CLIPPING_INPUT_PRIMITIVES_ARB:
 384    case GL_CLIPPING_OUTPUT_PRIMITIVES_ARB:
 385    case GL_COMPUTE_SHADER_INVOCATIONS_ARB:
 386    case GL_TESS_CONTROL_SHADER_PATCHES_ARB:
 387    case GL_TESS_EVALUATION_SHADER_INVOCATIONS_ARB:
 388       emit_pipeline_stat(brw, query->bo, query->Base.Stream, query->Base.Target, 0);
 389       break;
 390
 391    default:
 392       unreachable("Unrecognized query target in brw_begin_query()");
 393    }
 394 }
 395
 396 /**
 397  * Driver hook for glEndQuery().
 398  *
 399  * Emits GPU commands to record a final query value, ending any data capturing.
 400  * However, the final result isn't necessarily available until the GPU processes
 401  * those commands.  brw_queryobj_get_results() processes the captured data to
 402  * produce the final result.
 403  */
 404 static void
 405 gen6_end_query(struct gl_context *ctx, struct gl_query_object *q)
 406 {
 407    struct brw_context *brw = brw_context(ctx);
 408    struct brw_query_object *query = (struct brw_query_object *)q;
 409
 410    switch (query->Base.Target) {
 411    case GL_TIME_ELAPSED:
 412       brw_write_timestamp(brw, query->bo, 1);
 413       break;
 414
 415    case GL_ANY_SAMPLES_PASSED:
 416    case GL_ANY_SAMPLES_PASSED_CONSERVATIVE:
 417    case GL_SAMPLES_PASSED_ARB:
 418       brw_write_depth_count(brw, query->bo, 1);
 419       break;
 420
 421    case GL_PRIMITIVES_GENERATED:
 422       write_primitives_generated(brw, query->bo, query->Base.Stream, 1);
 423       if (query->Base.Stream == 0)
 424          ctx->NewDriverState |= BRW_NEW_RASTERIZER_DISCARD;
 425       break;
 426
 427    case GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN:
 428       write_xfb_primitives_written(brw, query->bo, query->Base.Stream, 1);
 429       break;
 430
 431    case GL_TRANSFORM_FEEDBACK_STREAM_OVERFLOW_ARB:
 432       write_xfb_overflow_streams(ctx, query->bo, query->Base.Stream, 1, 1);
 433       break;
 434
 435    case GL_TRANSFORM_FEEDBACK_OVERFLOW_ARB:
 436       write_xfb_overflow_streams(ctx, query->bo, 0, MAX_VERTEX_STREAMS, 1);
 437       break;
 438
 439       /* calculate overflow here */
 440    case GL_VERTICES_SUBMITTED_ARB:
 441    case GL_PRIMITIVES_SUBMITTED_ARB:
 442    case GL_VERTEX_SHADER_INVOCATIONS_ARB:
 443    case GL_GEOMETRY_SHADER_PRIMITIVES_EMITTED_ARB:
 444    case GL_FRAGMENT_SHADER_INVOCATIONS_ARB:
 445    case GL_COMPUTE_SHADER_INVOCATIONS_ARB:
 446    case GL_CLIPPING_INPUT_PRIMITIVES_ARB:
 447    case GL_CLIPPING_OUTPUT_PRIMITIVES_ARB:
 448    case GL_GEOMETRY_SHADER_INVOCATIONS:
 449    case GL_TESS_CONTROL_SHADER_PATCHES_ARB:
 450    case GL_TESS_EVALUATION_SHADER_INVOCATIONS_ARB:
 451       emit_pipeline_stat(brw, query->bo,
 452                          query->Base.Stream, query->Base.Target, 1);
 453       break;
 454
 455    default:
 456       unreachable("Unrecognized query target in brw_end_query()");
 457    }
 458
 459    /* The current batch contains the commands to handle EndQuery(),
 460     * but they won't actually execute until it is flushed.
 461     */
 462    query->flushed = false;
 463
 464    /* For ARB_query_buffer_object: The result is now available */
 465    set_query_availability(brw, query, true);
 466 }
 467
 468 /**
 469  * Flush the batch if it still references the query object BO.
 470  */
 471 static void
 472 flush_batch_if_needed(struct brw_context *brw, struct brw_query_object *query)
 473 {
 474    /* If the batch doesn't reference the BO, it must have been flushed
 475     * (for example, due to being full).  Record that it's been flushed.
 476     */
 477    query->flushed = query->flushed ||
 478                     !brw_batch_references(&brw->batch, query->bo);
 479
 480    if (!query->flushed)
 481       intel_batchbuffer_flush(brw);
 482 }
 483
 484 /**
 485  * The WaitQuery() driver hook.
 486  *
 487  * Wait for a query result to become available and return it.  This is the
 488  * backing for glGetQueryObjectiv() with the GL_QUERY_RESULT pname.
 489  */
 490 static void gen6_wait_query(struct gl_context *ctx, struct gl_query_object *q)
 491 {
 492    struct brw_context *brw = brw_context(ctx);
 493    struct brw_query_object *query = (struct brw_query_object *)q;
 494
 495    /* If the application has requested the query result, but this batch is
 496     * still contributing to it, flush it now to finish that work so the
 497     * result will become available (eventually).
 498     */
 499    flush_batch_if_needed(brw, query);
 500
 501    gen6_queryobj_get_results(ctx, query);
 502 }
 503
 504 /**
 505  * The CheckQuery() driver hook.
 506  *
 507  * Checks whether a query result is ready yet.  If not, flushes.
 508  * This is the backing for glGetQueryObjectiv()'s QUERY_RESULT_AVAILABLE pname.
 509  */
 510 static void gen6_check_query(struct gl_context *ctx, struct gl_query_object *q)
 511 {
 512    struct brw_context *brw = brw_context(ctx);
 513    struct brw_query_object *query = (struct brw_query_object *)q;
 514
 515    /* If query->bo is NULL, we've already gathered the results - this is a
 516     * redundant CheckQuery call.  Ignore it.
 517     */
 518    if (query->bo == NULL)
 519       return;
 520
 521    /* From the GL_ARB_occlusion_query spec:
 522     *
 523     *     "Instead of allowing for an infinite loop, performing a
 524     *      QUERY_RESULT_AVAILABLE_ARB will perform a flush if the result is
 525     *      not ready yet on the first time it is queried.  This ensures that
 526     *      the async query will return true in finite time.
 527     */
 528    flush_batch_if_needed(brw, query);
 529
 530    if (!brw_bo_busy(query->bo)) {
 531       gen6_queryobj_get_results(ctx, query);
 532    }
 533 }
 534
 535 static void
 536 gen6_query_counter(struct gl_context *ctx, struct gl_query_object *q)
 537 {
 538    struct brw_context *brw = brw_context(ctx);
 539    struct brw_query_object *query = (struct brw_query_object *)q;
 540    brw_query_counter(ctx, q);
 541    set_query_availability(brw, query, true);
 542 }
 543
 544 /* Initialize Gen6+-specific query object functions. */
 545 void gen6_init_queryobj_functions(struct dd_function_table *functions)
 546 {
 547    functions->BeginQuery = gen6_begin_query;
 548    functions->EndQuery = gen6_end_query;
 549    functions->CheckQuery = gen6_check_query;
 550    functions->WaitQuery = gen6_wait_query;
 551    functions->QueryCounter = gen6_query_counter;
 552 }