src/gallium/drivers/freedreno/freedreno_query_acc.c

   1 /*
   2  * Copyright (C) 2017 Rob Clark <robclark@freedesktop.org>
   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 FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  * Authors:
  24  *    Rob Clark <robclark@freedesktop.org>
  25  */
  26
  27 #include "util/u_memory.h"
  28 #include "util/u_inlines.h"
  29
  30 #include "freedreno_query_acc.h"
  31 #include "freedreno_context.h"
  32 #include "freedreno_resource.h"
  33 #include "freedreno_util.h"
  34
  35
  36 static bool
  37 is_active(struct fd_acc_query *aq, enum fd_render_stage stage)
  38 {
  39         return !!(aq->provider->active & stage);
  40 }
  41
  42 static void
  43 fd_acc_destroy_query(struct fd_context *ctx, struct fd_query *q)
  44 {
  45         struct fd_acc_query *aq = fd_acc_query(q);
  46
  47         DBG("%p: active=%d", q, q->active);
  48
  49         pipe_resource_reference(&aq->prsc, NULL);
  50         list_del(&aq->node);
  51
  52         free(aq->query_data);
  53         free(aq);
  54 }
  55
  56 static void
  57 realloc_query_bo(struct fd_context *ctx, struct fd_acc_query *aq)
  58 {
  59         struct fd_resource *rsc;
  60         void *map;
  61
  62         pipe_resource_reference(&aq->prsc, NULL);
  63
  64         aq->prsc = pipe_buffer_create(&ctx->screen->base,
  65                         PIPE_BIND_QUERY_BUFFER, 0, 0x1000);
  66
  67         /* don't assume the buffer is zero-initialized: */
  68         rsc = fd_resource(aq->prsc);
  69
  70         fd_bo_cpu_prep(rsc->bo, ctx->pipe, DRM_FREEDRENO_PREP_WRITE);
  71
  72         map = fd_bo_map(rsc->bo);
  73         memset(map, 0, aq->size);
  74         fd_bo_cpu_fini(rsc->bo);
  75 }
  76
  77 static bool
  78 fd_acc_begin_query(struct fd_context *ctx, struct fd_query *q)
  79 {
  80         struct fd_batch *batch = fd_context_batch(ctx);
  81         struct fd_acc_query *aq = fd_acc_query(q);
  82         const struct fd_acc_sample_provider *p = aq->provider;
  83
  84         DBG("%p: active=%d", q, q->active);
  85
  86         /* ->begin_query() discards previous results, so realloc bo: */
  87         realloc_query_bo(ctx, aq);
  88
  89         /* then resume query if needed to collect first sample: */
  90         if (batch && is_active(aq, batch->stage))
  91                 p->resume(aq, batch);
  92
  93         /* add to active list: */
  94         assert(list_is_empty(&aq->node));
  95         list_addtail(&aq->node, &ctx->acc_active_queries);
  96
  97         return true;
  98 }
  99
 100 static void
 101 fd_acc_end_query(struct fd_context *ctx, struct fd_query *q)
 102 {
 103         struct fd_batch *batch = fd_context_batch(ctx);
 104         struct fd_acc_query *aq = fd_acc_query(q);
 105         const struct fd_acc_sample_provider *p = aq->provider;
 106
 107         DBG("%p: active=%d", q, q->active);
 108
 109         if (batch && is_active(aq, batch->stage))
 110                 p->pause(aq, batch);
 111
 112         /* remove from active list: */
 113         list_delinit(&aq->node);
 114 }
 115
 116 static bool
 117 fd_acc_get_query_result(struct fd_context *ctx, struct fd_query *q,
 118                 bool wait, union pipe_query_result *result)
 119 {
 120         struct fd_acc_query *aq = fd_acc_query(q);
 121         const struct fd_acc_sample_provider *p = aq->provider;
 122         struct fd_resource *rsc = fd_resource(aq->prsc);
 123
 124         DBG("%p: wait=%d, active=%d", q, wait, q->active);
 125
 126         assert(list_is_empty(&aq->node));
 127
 128         /* if !wait, then check the last sample (the one most likely to
 129          * not be ready yet) and bail if it is not ready:
 130          */
 131         if (!wait) {
 132                 int ret;
 133
 134                 if (pending(rsc, false)) {
 135                         /* piglit spec@arb_occlusion_query@occlusion_query_conform
 136                          * test, and silly apps perhaps, get stuck in a loop trying
 137                          * to get  query result forever with wait==false..  we don't
 138                          * wait to flush unnecessarily but we also don't want to
 139                          * spin forever:
 140                          */
 141                         if (aq->no_wait_cnt++ > 5)
 142                                 fd_batch_flush(rsc->write_batch, false);
 143                         return false;
 144                 }
 145
 146                 ret = fd_bo_cpu_prep(rsc->bo, ctx->pipe,
 147                                 DRM_FREEDRENO_PREP_READ | DRM_FREEDRENO_PREP_NOSYNC);
 148                 if (ret)
 149                         return false;
 150
 151                 fd_bo_cpu_fini(rsc->bo);
 152         }
 153
 154         if (rsc->write_batch)
 155                 fd_batch_flush(rsc->write_batch, true);
 156
 157         /* get the result: */
 158         fd_bo_cpu_prep(rsc->bo, ctx->pipe, DRM_FREEDRENO_PREP_READ);
 159
 160         void *ptr = fd_bo_map(rsc->bo);
 161         p->result(aq, ptr, result);
 162         fd_bo_cpu_fini(rsc->bo);
 163
 164         return true;
 165 }
 166
 167 static const struct fd_query_funcs acc_query_funcs = {
 168                 .destroy_query    = fd_acc_destroy_query,
 169                 .begin_query      = fd_acc_begin_query,
 170                 .end_query        = fd_acc_end_query,
 171                 .get_query_result = fd_acc_get_query_result,
 172 };
 173
 174 struct fd_query *
 175 fd_acc_create_query2(struct fd_context *ctx, unsigned query_type,
 176                 unsigned index, const struct fd_acc_sample_provider *provider)
 177 {
 178         struct fd_acc_query *aq;
 179         struct fd_query *q;
 180
 181         aq = CALLOC_STRUCT(fd_acc_query);
 182         if (!aq)
 183                 return NULL;
 184
 185         DBG("%p: query_type=%u", aq, query_type);
 186
 187         aq->provider = provider;
 188         aq->size = provider->size;
 189
 190         list_inithead(&aq->node);
 191
 192         q = &aq->base;
 193         q->funcs = &acc_query_funcs;
 194         q->type = query_type;
 195         q->index = index;
 196
 197         return q;
 198 }
 199
 200 struct fd_query *
 201 fd_acc_create_query(struct fd_context *ctx, unsigned query_type,
 202                 unsigned index)
 203 {
 204         int idx = pidx(query_type);
 205
 206         if ((idx < 0) || !ctx->acc_sample_providers[idx])
 207                 return NULL;
 208
 209         return fd_acc_create_query2(ctx, query_type, index,
 210                         ctx->acc_sample_providers[idx]);
 211 }
 212
 213 void
 214 fd_acc_query_set_stage(struct fd_batch *batch, enum fd_render_stage stage)
 215 {
 216         if (stage != batch->stage) {
 217                 struct fd_acc_query *aq;
 218                 LIST_FOR_EACH_ENTRY(aq, &batch->ctx->acc_active_queries, node) {
 219                         const struct fd_acc_sample_provider *p = aq->provider;
 220
 221                         bool was_active = is_active(aq, batch->stage);
 222                         bool now_active = is_active(aq, stage);
 223
 224                         if (now_active && !was_active)
 225                                 p->resume(aq, batch);
 226                         else if (was_active && !now_active)
 227                                 p->pause(aq, batch);
 228                 }
 229         }
 230 }
 231
 232 void
 233 fd_acc_query_register_provider(struct pipe_context *pctx,
 234                 const struct fd_acc_sample_provider *provider)
 235 {
 236         struct fd_context *ctx = fd_context(pctx);
 237         int idx = pidx(provider->query_type);
 238
 239         assert((0 <= idx) && (idx < MAX_HW_SAMPLE_PROVIDERS));
 240         assert(!ctx->acc_sample_providers[idx]);
 241
 242         ctx->acc_sample_providers[idx] = provider;
 243 }