src/gallium/drivers/etnaviv/etnaviv_query_pm.c

   1 /*
   2  * Copyright (c) 2017 Etnaviv Project
   3  * Copyright (C) 2017 Zodiac Inflight Innovations
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the
  13  * next paragraph) shall be included in all copies or substantial portions
  14  * of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Christian Gmeiner <christian.gmeiner@gmail.com>
  26  */
  27
  28 #include "util/u_memory.h"
  29
  30 #include "etnaviv_context.h"
  31 #include "etnaviv_query_pm.h"
  32 #include "etnaviv_screen.h"
  33
  34 static inline void
  35 etna_pm_add_signal(struct etna_pm_query *pq, struct etna_perfmon *perfmon,
  36                    const struct etna_perfmon_config *cfg)
  37 {
  38    struct etna_perfmon_signal *signal = etna_pm_query_signal(perfmon, cfg->source);
  39
  40    pq->signal = signal;
  41 }
  42
  43 static bool
  44 realloc_query_bo(struct etna_context *ctx, struct etna_pm_query *pq)
  45 {
  46    if (pq->bo)
  47       etna_bo_del(pq->bo);
  48
  49    pq->bo = etna_bo_new(ctx->screen->dev, 64, DRM_ETNA_GEM_CACHE_WC);
  50    if (unlikely(!pq->bo))
  51       return false;
  52
  53    pq->data = etna_bo_map(pq->bo);
  54
  55    return true;
  56 }
  57
  58 static void
  59 etna_pm_query_get(struct etna_cmd_stream *stream, struct etna_query *q,
  60                   unsigned flags)
  61 {
  62    struct etna_pm_query *pq = etna_pm_query(q);
  63    unsigned offset;
  64    assert(flags);
  65
  66    if (flags == ETNA_PM_PROCESS_PRE)
  67       offset = 1;
  68    else
  69       offset = 2;
  70
  71    struct etna_perf p = {
  72       .flags = flags,
  73       .sequence = pq->sequence,
  74       .bo = pq->bo,
  75       .signal = pq->signal,
  76       .offset = offset
  77    };
  78
  79    etna_cmd_stream_perf(stream, &p);
  80 }
  81
  82 static inline void
  83 etna_pm_query_update(struct etna_query *q)
  84 {
  85    struct etna_pm_query *pq = etna_pm_query(q);
  86
  87    if (pq->data[0] == pq->sequence)
  88       pq->ready = true;
  89 }
  90
  91 static void
  92 etna_pm_destroy_query(struct etna_context *ctx, struct etna_query *q)
  93 {
  94    struct etna_pm_query *pq = etna_pm_query(q);
  95
  96    etna_bo_del(pq->bo);
  97    FREE(pq);
  98 }
  99
 100 static bool
 101 etna_pm_begin_query(struct etna_context *ctx, struct etna_query *q)
 102 {
 103    struct etna_pm_query *pq = etna_pm_query(q);
 104
 105    pq->ready = false;
 106    pq->sequence++;
 107
 108    etna_pm_query_get(ctx->stream, q, ETNA_PM_PROCESS_PRE);
 109
 110    return true;
 111 }
 112
 113 static void
 114 etna_pm_end_query(struct etna_context *ctx, struct etna_query *q)
 115 {
 116    etna_pm_query_get(ctx->stream, q, ETNA_PM_PROCESS_POST);
 117 }
 118
 119 static bool
 120 etna_pm_get_query_result(struct etna_context *ctx, struct etna_query *q,
 121                          bool wait, union pipe_query_result *result)
 122 {
 123    struct etna_pm_query *pq = etna_pm_query(q);
 124
 125    etna_pm_query_update(q);
 126
 127    if (!pq->ready) {
 128       if (!wait)
 129          return false;
 130
 131       if (!etna_bo_cpu_prep(pq->bo, DRM_ETNA_PREP_READ))
 132          return false;
 133
 134       pq->ready = true;
 135       etna_bo_cpu_fini(pq->bo);
 136    }
 137
 138    result->u32 = pq->data[2] - pq->data[1];
 139
 140    return true;
 141 }
 142
 143 static const struct etna_query_funcs hw_query_funcs = {
 144    .destroy_query = etna_pm_destroy_query,
 145    .begin_query = etna_pm_begin_query,
 146    .end_query = etna_pm_end_query,
 147    .get_query_result = etna_pm_get_query_result,
 148 };
 149
 150 struct etna_query *
 151 etna_pm_create_query(struct etna_context *ctx, unsigned query_type)
 152 {
 153    struct etna_perfmon *perfmon = ctx->screen->perfmon;
 154    const struct etna_perfmon_config *cfg;
 155    struct etna_pm_query *pq;
 156    struct etna_query *q;
 157
 158    cfg = etna_pm_query_config(query_type);
 159    if (!cfg)
 160       return NULL;
 161
 162    if (!etna_pm_cfg_supported(perfmon, cfg))
 163       return NULL;
 164
 165    pq = CALLOC_STRUCT(etna_pm_query);
 166    if (!pq)
 167       return NULL;
 168
 169    if (!realloc_query_bo(ctx, pq)) {
 170       FREE(pq);
 171       return NULL;
 172    }
 173
 174    q = &pq->base;
 175    q->funcs = &hw_query_funcs;
 176    q->type = query_type;
 177
 178    etna_pm_add_signal(pq, perfmon, cfg);
 179
 180    return q;
 181 }