src/gallium/drivers/etnaviv/etnaviv_query_hw.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  *    Rob Clark <robclark@freedesktop.org>
  26  *    Christian Gmeiner <christian.gmeiner@gmail.com>
  27  */
  28
  29 #include "util/u_inlines.h"
  30 #include "util/u_memory.h"
  31
  32 #include "etnaviv_context.h"
  33 #include "etnaviv_query_hw.h"
  34 #include "etnaviv_screen.h"
  35
  36 static void
  37 etna_hw_destroy_query(struct etna_context *ctx, struct etna_query *q)
  38 {
  39    struct etna_hw_query *hq = etna_hw_query(q);
  40
  41    pipe_resource_reference(&hq->prsc, NULL);
  42    list_del(&hq->node);
  43
  44    FREE(hq);
  45 }
  46
  47 static void
  48 realloc_query_bo(struct etna_context *ctx, struct etna_hw_query *hq)
  49 {
  50    struct etna_resource *rsc;
  51    void *map;
  52
  53    pipe_resource_reference(&hq->prsc, NULL);
  54
  55    /* allocate resource with space for 64 * 64bit values */
  56    hq->prsc = pipe_buffer_create(&ctx->screen->base, PIPE_BIND_QUERY_BUFFER,
  57                                  0, 0x1000);
  58
  59    /* don't assume the buffer is zero-initialized */
  60    rsc = etna_resource(hq->prsc);
  61
  62    etna_bo_cpu_prep(rsc->bo, DRM_ETNA_PREP_WRITE);
  63
  64    map = etna_bo_map(rsc->bo);
  65    memset(map, 0, 0x1000);
  66    etna_bo_cpu_fini(rsc->bo);
  67 }
  68
  69 static boolean
  70 etna_hw_begin_query(struct etna_context *ctx, struct etna_query *q)
  71 {
  72    struct etna_hw_query *hq = etna_hw_query(q);
  73    const struct etna_hw_sample_provider *p = hq->provider;
  74
  75    /* ->begin_query() discards previous results, so realloc bo */
  76    realloc_query_bo(ctx, hq);
  77
  78    p->start(hq, ctx);
  79
  80    /* add to active list */
  81    assert(list_empty(&hq->node));
  82    list_addtail(&hq->node, &ctx->active_hw_queries);
  83
  84    return true;
  85 }
  86
  87 static void
  88 etna_hw_end_query(struct etna_context *ctx, struct etna_query *q)
  89 {
  90    struct etna_hw_query *hq = etna_hw_query(q);
  91    const struct etna_hw_sample_provider *p = hq->provider;
  92
  93    p->stop(hq, ctx);
  94
  95    /* remove from active list */
  96    list_delinit(&hq->node);
  97 }
  98
  99 static boolean
 100 etna_hw_get_query_result(struct etna_context *ctx, struct etna_query *q,
 101                          boolean wait, union pipe_query_result *result)
 102 {
 103    struct etna_hw_query *hq = etna_hw_query(q);
 104    struct etna_resource *rsc = etna_resource(hq->prsc);
 105    const struct etna_hw_sample_provider *p = hq->provider;
 106
 107    assert(LIST_IS_EMPTY(&hq->node));
 108
 109    if (!wait) {
 110       int ret;
 111
 112       if (rsc->status & ETNA_PENDING_WRITE) {
 113          /* piglit spec@arb_occlusion_query@occlusion_query_conform
 114           * test, and silly apps perhaps, get stuck in a loop trying
 115           * to get query result forever with wait==false..  we don't
 116           * wait to flush unnecessarily but we also don't want to
 117           * spin forever.
 118           */
 119          if (hq->no_wait_cnt++ > 5)
 120             ctx->base.flush(&ctx->base, NULL, 0);
 121          return false;
 122       }
 123
 124       ret = etna_bo_cpu_prep(rsc->bo, DRM_ETNA_PREP_READ | DRM_ETNA_PREP_NOSYNC);
 125       if (ret)
 126          return false;
 127
 128       etna_bo_cpu_fini(rsc->bo);
 129    }
 130
 131    /* flush that GPU executes all query related actions */
 132    ctx->base.flush(&ctx->base, NULL, 0);
 133
 134    /* get the result */
 135    etna_bo_cpu_prep(rsc->bo, DRM_ETNA_PREP_READ);
 136
 137    void *ptr = etna_bo_map(rsc->bo);
 138    p->result(hq, ptr, result);
 139
 140    etna_bo_cpu_fini(rsc->bo);
 141
 142    return true;
 143 }
 144
 145 static const struct etna_query_funcs hw_query_funcs = {
 146    .destroy_query = etna_hw_destroy_query,
 147    .begin_query = etna_hw_begin_query,
 148    .end_query = etna_hw_end_query,
 149    .get_query_result = etna_hw_get_query_result,
 150 };
 151
 152 static inline const struct etna_hw_sample_provider *
 153 query_sample_provider(unsigned query_type)
 154 {
 155    switch (query_type) {
 156    default:
 157       return NULL;
 158    }
 159 }
 160
 161 struct etna_query *
 162 etna_hw_create_query(struct etna_context *ctx, unsigned query_type)
 163 {
 164    struct etna_hw_query *hq;
 165    struct etna_query *q;
 166    const struct etna_hw_sample_provider *p;
 167
 168    p = query_sample_provider(query_type);
 169    if (!p)
 170       return NULL;
 171
 172    hq = CALLOC_STRUCT(etna_hw_query);
 173    if (!hq)
 174       return NULL;
 175
 176    hq->provider = p;
 177
 178    list_inithead(&hq->node);
 179
 180    q = &hq->base;
 181    q->funcs = &hw_query_funcs;
 182    q->type = query_type;
 183
 184    return q;
 185 }