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 static void
  36 fd_acc_destroy_query(struct fd_context *ctx, struct fd_query *q)
  37 {
  38         struct fd_acc_query *aq = fd_acc_query(q);
  39
  40         DBG("%p", q);
  41
  42         pipe_resource_reference(&aq->prsc, NULL);
  43         list_del(&aq->node);
  44
  45         free(aq->query_data);
  46         free(aq);
  47 }
  48
  49 static void
  50 realloc_query_bo(struct fd_context *ctx, struct fd_acc_query *aq)
  51 {
  52         struct fd_resource *rsc;
  53         void *map;
  54
  55         pipe_resource_reference(&aq->prsc, NULL);
  56
  57         aq->prsc = pipe_buffer_create(&ctx->screen->base,
  58                         PIPE_BIND_QUERY_BUFFER, 0, 0x1000);
  59
  60         /* don't assume the buffer is zero-initialized: */
  61         rsc = fd_resource(aq->prsc);
  62
  63         fd_bo_cpu_prep(rsc->bo, ctx->pipe, DRM_FREEDRENO_PREP_WRITE);
  64
  65         map = fd_bo_map(rsc->bo);
  66         memset(map, 0, aq->size);
  67         fd_bo_cpu_fini(rsc->bo);
  68 }
  69
  70 static void
  71 fd_acc_query_pause(struct fd_acc_query *aq)
  72 {
  73         const struct fd_acc_sample_provider *p = aq->provider;
  74
  75         if (!aq->batch)
  76                 return;
  77
  78         p->pause(aq, aq->batch);
  79         aq->batch = NULL;
  80 }
  81
  82 static void
  83 fd_acc_query_resume(struct fd_acc_query *aq, struct fd_batch *batch)
  84 {
  85         const struct fd_acc_sample_provider *p = aq->provider;
  86
  87         aq->batch = batch;
  88         p->resume(aq, aq->batch);
  89
  90         fd_batch_resource_used(batch, fd_resource(aq->prsc), true);
  91 }
  92
  93 static void
  94 fd_acc_begin_query(struct fd_context *ctx, struct fd_query *q)
  95 {
  96         struct fd_acc_query *aq = fd_acc_query(q);
  97
  98         DBG("%p", q);
  99
 100         /* ->begin_query() discards previous results, so realloc bo: */
 101         realloc_query_bo(ctx, aq);
 102
 103         /* Signal that we need to update the active queries on the next draw */
 104         ctx->update_active_queries = true;
 105
 106         /* add to active list: */
 107         assert(list_is_empty(&aq->node));
 108         list_addtail(&aq->node, &ctx->acc_active_queries);
 109
 110         /* TIMESTAMP/GPU_FINISHED and don't do normal bracketing at draw time, we
 111          * need to just emit the capture at this moment.
 112          */
 113         if (skip_begin_query(q->type))
 114                 fd_acc_query_resume(aq, fd_context_batch(ctx));
 115 }
 116
 117 static void
 118 fd_acc_end_query(struct fd_context *ctx, struct fd_query *q)
 119 {
 120         struct fd_acc_query *aq = fd_acc_query(q);
 121
 122         DBG("%p", q);
 123
 124         fd_acc_query_pause(aq);
 125
 126         /* remove from active list: */
 127         list_delinit(&aq->node);
 128 }
 129
 130 static bool
 131 fd_acc_get_query_result(struct fd_context *ctx, struct fd_query *q,
 132                 bool wait, union pipe_query_result *result)
 133 {
 134         struct fd_acc_query *aq = fd_acc_query(q);
 135         const struct fd_acc_sample_provider *p = aq->provider;
 136         struct fd_resource *rsc = fd_resource(aq->prsc);
 137
 138         DBG("%p: wait=%d", q, wait);
 139
 140         assert(list_is_empty(&aq->node));
 141
 142         /* if !wait, then check the last sample (the one most likely to
 143          * not be ready yet) and bail if it is not ready:
 144          */
 145         if (!wait) {
 146                 int ret;
 147
 148                 if (pending(rsc, false)) {
 149                         /* piglit spec@arb_occlusion_query@occlusion_query_conform
 150                          * test, and silly apps perhaps, get stuck in a loop trying
 151                          * to get  query result forever with wait==false..  we don't
 152                          * wait to flush unnecessarily but we also don't want to
 153                          * spin forever:
 154                          */
 155                         if (aq->no_wait_cnt++ > 5)
 156                                 fd_batch_flush(rsc->write_batch);
 157                         return false;
 158                 }
 159
 160                 ret = fd_bo_cpu_prep(rsc->bo, ctx->pipe,
 161                                 DRM_FREEDRENO_PREP_READ | DRM_FREEDRENO_PREP_NOSYNC);
 162                 if (ret)
 163                         return false;
 164
 165                 fd_bo_cpu_fini(rsc->bo);
 166         }
 167
 168         if (rsc->write_batch)
 169                 fd_batch_flush(rsc->write_batch);
 170
 171         /* get the result: */
 172         fd_bo_cpu_prep(rsc->bo, ctx->pipe, DRM_FREEDRENO_PREP_READ);
 173
 174         void *ptr = fd_bo_map(rsc->bo);
 175         p->result(aq, ptr, result);
 176         fd_bo_cpu_fini(rsc->bo);
 177
 178         return true;
 179 }
 180
 181 static const struct fd_query_funcs acc_query_funcs = {
 182                 .destroy_query    = fd_acc_destroy_query,
 183                 .begin_query      = fd_acc_begin_query,
 184                 .end_query        = fd_acc_end_query,
 185                 .get_query_result = fd_acc_get_query_result,
 186 };
 187
 188 struct fd_query *
 189 fd_acc_create_query2(struct fd_context *ctx, unsigned query_type,
 190                 unsigned index, const struct fd_acc_sample_provider *provider)
 191 {
 192         struct fd_acc_query *aq;
 193         struct fd_query *q;
 194
 195         aq = CALLOC_STRUCT(fd_acc_query);
 196         if (!aq)
 197                 return NULL;
 198
 199         DBG("%p: query_type=%u", aq, query_type);
 200
 201         aq->provider = provider;
 202         aq->size = provider->size;
 203
 204         list_inithead(&aq->node);
 205
 206         q = &aq->base;
 207         q->funcs = &acc_query_funcs;
 208         q->type = query_type;
 209         q->index = index;
 210
 211         return q;
 212 }
 213
 214 struct fd_query *
 215 fd_acc_create_query(struct fd_context *ctx, unsigned query_type,
 216                 unsigned index)
 217 {
 218         int idx = pidx(query_type);
 219
 220         if ((idx < 0) || !ctx->acc_sample_providers[idx])
 221                 return NULL;
 222
 223         return fd_acc_create_query2(ctx, query_type, index,
 224                         ctx->acc_sample_providers[idx]);
 225 }
 226
 227 /* Called at clear/draw/blit time to enable/disable the appropriate queries in
 228  * the batch (and transfer active querying between batches in the case of
 229  * batch reordering).
 230  */
 231 void
 232 fd_acc_query_set_stage(struct fd_batch *batch, enum fd_render_stage stage)
 233 {
 234         struct fd_context *ctx = batch->ctx;
 235
 236         if (stage != batch->stage || ctx->update_active_queries) {
 237                 struct fd_acc_query *aq;
 238                 LIST_FOR_EACH_ENTRY(aq, &ctx->acc_active_queries, node) {
 239                         bool batch_change = aq->batch != batch;
 240                         bool was_active = aq->batch != NULL;
 241                         bool now_active = stage != FD_STAGE_NULL &&
 242                                 (ctx->active_queries || aq->provider->always);
 243
 244                         if (was_active && (!now_active || batch_change))
 245                                 fd_acc_query_pause(aq);
 246                         if (now_active && (!was_active || batch_change))
 247                                 fd_acc_query_resume(aq, batch);
 248                 }
 249         }
 250
 251         ctx->update_active_queries = false;
 252 }
 253
 254 void
 255 fd_acc_query_register_provider(struct pipe_context *pctx,
 256                 const struct fd_acc_sample_provider *provider)
 257 {
 258         struct fd_context *ctx = fd_context(pctx);
 259         int idx = pidx(provider->query_type);
 260
 261         assert((0 <= idx) && (idx < MAX_HW_SAMPLE_PROVIDERS));
 262         assert(!ctx->acc_sample_providers[idx]);
 263
 264         ctx->acc_sample_providers[idx] = provider;
 265 }