src/gallium/drivers/freedreno/freedreno_batch.c

   1 /*
   2  * Copyright (C) 2016 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/list.h"
  28 #include "util/set.h"
  29 #include "util/hash_table.h"
  30 #include "util/u_string.h"
  31
  32 #include "freedreno_batch.h"
  33 #include "freedreno_context.h"
  34 #include "freedreno_resource.h"
  35 #include "freedreno_query_hw.h"
  36
  37 static void
  38 batch_init(struct fd_batch *batch)
  39 {
  40         struct fd_context *ctx = batch->ctx;
  41         unsigned size = 0;
  42
  43         if (ctx->screen->reorder)
  44                 util_queue_fence_init(&batch->flush_fence);
  45
  46         /* if kernel is too old to support unlimited # of cmd buffers, we
  47          * have no option but to allocate large worst-case sizes so that
  48          * we don't need to grow the ringbuffer.  Performance is likely to
  49          * suffer, but there is no good alternative.
  50          */
  51         if (fd_device_version(ctx->screen->dev) < FD_VERSION_UNLIMITED_CMDS) {
  52                 size = 0x100000;
  53         }
  54
  55         batch->draw    = fd_ringbuffer_new(ctx->screen->pipe, size);
  56         batch->binning = fd_ringbuffer_new(ctx->screen->pipe, size);
  57         batch->gmem    = fd_ringbuffer_new(ctx->screen->pipe, size);
  58
  59         fd_ringbuffer_set_parent(batch->gmem, NULL);
  60         fd_ringbuffer_set_parent(batch->draw, batch->gmem);
  61         fd_ringbuffer_set_parent(batch->binning, batch->gmem);
  62
  63         batch->cleared = batch->partial_cleared = 0;
  64         batch->restore = batch->resolve = 0;
  65         batch->needs_flush = false;
  66         batch->gmem_reason = 0;
  67         batch->num_draws = 0;
  68         batch->stage = FD_STAGE_NULL;
  69
  70         fd_reset_wfi(batch);
  71
  72         /* reset maximal bounds: */
  73         batch->max_scissor.minx = batch->max_scissor.miny = ~0;
  74         batch->max_scissor.maxx = batch->max_scissor.maxy = 0;
  75
  76         util_dynarray_init(&batch->draw_patches);
  77
  78         if (is_a3xx(ctx->screen))
  79                 util_dynarray_init(&batch->rbrc_patches);
  80
  81         assert(batch->resources->entries == 0);
  82
  83         util_dynarray_init(&batch->samples);
  84 }
  85
  86 struct fd_batch *
  87 fd_batch_create(struct fd_context *ctx)
  88 {
  89         struct fd_batch *batch = CALLOC_STRUCT(fd_batch);
  90
  91         if (!batch)
  92                 return NULL;
  93
  94         DBG("%p", batch);
  95
  96         pipe_reference_init(&batch->reference, 1);
  97         batch->ctx = ctx;
  98
  99         batch->resources = _mesa_set_create(NULL, _mesa_hash_pointer,
 100                         _mesa_key_pointer_equal);
 101
 102         batch_init(batch);
 103
 104         return batch;
 105 }
 106
 107 static void
 108 batch_fini(struct fd_batch *batch)
 109 {
 110         pipe_resource_reference(&batch->query_buf, NULL);
 111
 112         fd_ringbuffer_del(batch->draw);
 113         fd_ringbuffer_del(batch->binning);
 114         fd_ringbuffer_del(batch->gmem);
 115
 116         util_dynarray_fini(&batch->draw_patches);
 117
 118         if (is_a3xx(batch->ctx->screen))
 119                 util_dynarray_fini(&batch->rbrc_patches);
 120
 121         while (batch->samples.size > 0) {
 122                 struct fd_hw_sample *samp =
 123                         util_dynarray_pop(&batch->samples, struct fd_hw_sample *);
 124                 fd_hw_sample_reference(batch->ctx, &samp, NULL);
 125         }
 126         util_dynarray_fini(&batch->samples);
 127
 128         if (batch->ctx->screen->reorder)
 129                 util_queue_fence_destroy(&batch->flush_fence);
 130 }
 131
 132 static void
 133 batch_flush_reset_dependencies(struct fd_batch *batch, bool flush)
 134 {
 135         struct fd_batch_cache *cache = &batch->ctx->screen->batch_cache;
 136         struct fd_batch *dep;
 137
 138         foreach_batch(dep, cache, batch->dependents_mask) {
 139                 if (flush)
 140                         fd_batch_flush(dep, false);
 141                 fd_batch_reference(&dep, NULL);
 142         }
 143
 144         batch->dependents_mask = 0;
 145 }
 146
 147 static void
 148 batch_reset_resources(struct fd_batch *batch)
 149 {
 150         struct set_entry *entry;
 151
 152         set_foreach(batch->resources, entry) {
 153                 struct fd_resource *rsc = (struct fd_resource *)entry->key;
 154                 _mesa_set_remove(batch->resources, entry);
 155                 debug_assert(rsc->batch_mask & (1 << batch->idx));
 156                 rsc->batch_mask &= ~(1 << batch->idx);
 157                 if (rsc->write_batch == batch)
 158                         fd_batch_reference(&rsc->write_batch, NULL);
 159         }
 160 }
 161
 162 static void
 163 batch_reset(struct fd_batch *batch)
 164 {
 165         DBG("%p", batch);
 166
 167         fd_batch_sync(batch);
 168
 169         batch_flush_reset_dependencies(batch, false);
 170         batch_reset_resources(batch);
 171
 172         batch_fini(batch);
 173         batch_init(batch);
 174 }
 175
 176 void
 177 fd_batch_reset(struct fd_batch *batch)
 178 {
 179         if (batch->needs_flush)
 180                 batch_reset(batch);
 181 }
 182
 183 void
 184 __fd_batch_destroy(struct fd_batch *batch)
 185 {
 186         fd_bc_invalidate_batch(batch, true);
 187
 188         DBG("%p", batch);
 189
 190         util_copy_framebuffer_state(&batch->framebuffer, NULL);
 191
 192         batch_fini(batch);
 193
 194         batch_reset_resources(batch);
 195         debug_assert(batch->resources->entries == 0);
 196         _mesa_set_destroy(batch->resources, NULL);
 197
 198         batch_flush_reset_dependencies(batch, false);
 199         debug_assert(batch->dependents_mask == 0);
 200
 201         free(batch);
 202 }
 203
 204 void
 205 __fd_batch_describe(char* buf, const struct fd_batch *batch)
 206 {
 207         util_sprintf(buf, "fd_batch<%u>", batch->seqno);
 208 }
 209
 210 void
 211 fd_batch_sync(struct fd_batch *batch)
 212 {
 213         if (!batch->ctx->screen->reorder)
 214                 return;
 215         util_queue_job_wait(&batch->flush_fence);
 216 }
 217
 218 static void
 219 batch_flush_func(void *job, int id)
 220 {
 221         struct fd_batch *batch = job;
 222
 223         fd_gmem_render_tiles(batch);
 224         batch_reset_resources(batch);
 225         batch->ctx->last_fence = fd_ringbuffer_timestamp(batch->gmem);
 226 }
 227
 228 static void
 229 batch_cleanup_func(void *job, int id)
 230 {
 231         struct fd_batch *batch = job;
 232         fd_batch_reference(&batch, NULL);
 233 }
 234
 235 static void
 236 batch_flush(struct fd_batch *batch)
 237 {
 238         DBG("%p: needs_flush=%d", batch, batch->needs_flush);
 239
 240         if (!batch->needs_flush)
 241                 return;
 242
 243         batch->needs_flush = false;
 244
 245         /* close out the draw cmds by making sure any active queries are
 246          * paused:
 247          */
 248         fd_hw_query_set_stage(batch, batch->draw, FD_STAGE_NULL);
 249
 250         batch->ctx->dirty = ~0;
 251         batch_flush_reset_dependencies(batch, true);
 252
 253         if (batch->ctx->screen->reorder) {
 254                 struct fd_batch *tmp = NULL;
 255                 fd_batch_reference(&tmp, batch);
 256                 util_queue_add_job(&batch->ctx->flush_queue,
 257                                 batch, &batch->flush_fence,
 258                                 batch_flush_func, batch_cleanup_func);
 259         } else {
 260                 fd_gmem_render_tiles(batch);
 261                 batch_reset_resources(batch);
 262                 batch->ctx->last_fence = fd_ringbuffer_timestamp(batch->gmem);
 263         }
 264
 265         debug_assert(batch->reference.count > 0);
 266
 267         if (batch == batch->ctx->batch) {
 268                 batch_reset(batch);
 269         } else {
 270                 fd_bc_invalidate_batch(batch, false);
 271         }
 272 }
 273
 274 /* NOTE: could drop the last ref to batch */
 275 void
 276 fd_batch_flush(struct fd_batch *batch, bool sync)
 277 {
 278         /* NOTE: we need to hold an extra ref across the body of flush,
 279          * since the last ref to this batch could be dropped when cleaning
 280          * up used_resources
 281          */
 282         struct fd_batch *tmp = NULL;
 283         fd_batch_reference(&tmp, batch);
 284         batch_flush(tmp);
 285         if (sync)
 286                 fd_batch_sync(tmp);
 287         fd_batch_reference(&tmp, NULL);
 288 }
 289
 290 /* does 'batch' depend directly or indirectly on 'other' ? */
 291 static bool
 292 batch_depends_on(struct fd_batch *batch, struct fd_batch *other)
 293 {
 294         struct fd_batch_cache *cache = &batch->ctx->screen->batch_cache;
 295         struct fd_batch *dep;
 296
 297         if (batch->dependents_mask & (1 << other->idx))
 298                 return true;
 299
 300         foreach_batch(dep, cache, batch->dependents_mask)
 301                 if (batch_depends_on(batch, dep))
 302                         return true;
 303
 304         return false;
 305 }
 306
 307 static void
 308 batch_add_dep(struct fd_batch *batch, struct fd_batch *dep)
 309 {
 310         if (batch->dependents_mask & (1 << dep->idx))
 311                 return;
 312
 313         /* if the new depedency already depends on us, we need to flush
 314          * to avoid a loop in the dependency graph.
 315          */
 316         if (batch_depends_on(dep, batch)) {
 317                 DBG("%p: flush forced on %p!", batch, dep);
 318                 fd_batch_flush(dep, false);
 319         } else {
 320                 struct fd_batch *other = NULL;
 321                 fd_batch_reference(&other, dep);
 322                 batch->dependents_mask |= (1 << dep->idx);
 323                 DBG("%p: added dependency on %p", batch, dep);
 324         }
 325 }
 326
 327 void
 328 fd_batch_resource_used(struct fd_batch *batch, struct fd_resource *rsc, bool write)
 329 {
 330         if (rsc->stencil)
 331                 fd_batch_resource_used(batch, rsc->stencil, write);
 332
 333         DBG("%p: %s %p", batch, write ? "write" : "read", rsc);
 334
 335         /* note, invalidate write batch, to avoid further writes to rsc
 336          * resulting in a write-after-read hazard.
 337          */
 338
 339         if (write) {
 340                 /* if we are pending read or write by any other batch: */
 341                 if (rsc->batch_mask != (1 << batch->idx)) {
 342                         struct fd_batch_cache *cache = &batch->ctx->screen->batch_cache;
 343                         struct fd_batch *dep;
 344                         foreach_batch(dep, cache, rsc->batch_mask) {
 345                                 struct fd_batch *b = NULL;
 346                                 /* note that batch_add_dep could flush and unref dep, so
 347                                  * we need to hold a reference to keep it live for the
 348                                  * fd_bc_invalidate_batch()
 349                                  */
 350                                 fd_batch_reference(&b, dep);
 351                                 batch_add_dep(batch, b);
 352                                 fd_bc_invalidate_batch(b, false);
 353                                 fd_batch_reference_locked(&b, NULL);
 354                         }
 355                 }
 356                 fd_batch_reference(&rsc->write_batch, batch);
 357         } else {
 358                 if (rsc->write_batch) {
 359                         batch_add_dep(batch, rsc->write_batch);
 360                         fd_bc_invalidate_batch(rsc->write_batch, false);
 361                 }
 362         }
 363
 364         if (rsc->batch_mask & (1 << batch->idx))
 365                 return;
 366
 367         debug_assert(!_mesa_set_search(batch->resources, rsc));
 368
 369         _mesa_set_add(batch->resources, rsc);
 370         rsc->batch_mask |= (1 << batch->idx);
 371 }
 372
 373 void
 374 fd_batch_check_size(struct fd_batch *batch)
 375 {
 376         if (fd_device_version(batch->ctx->screen->dev) >= FD_VERSION_UNLIMITED_CMDS)
 377                 return;
 378
 379         struct fd_ringbuffer *ring = batch->draw;
 380         if (((ring->cur - ring->start) > (ring->size/4 - 0x1000)) ||
 381                         (fd_mesa_debug & FD_DBG_FLUSH))
 382                 fd_batch_flush(batch, true);
 383 }