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->in_fence_fd = -1;
  64
  65         batch->cleared = batch->partial_cleared = 0;
  66         batch->restore = batch->resolve = 0;
  67         batch->needs_flush = false;
  68         batch->gmem_reason = 0;
  69         batch->num_draws = 0;
  70         batch->stage = FD_STAGE_NULL;
  71
  72         fd_reset_wfi(batch);
  73
  74         /* reset maximal bounds: */
  75         batch->max_scissor.minx = batch->max_scissor.miny = ~0;
  76         batch->max_scissor.maxx = batch->max_scissor.maxy = 0;
  77
  78         util_dynarray_init(&batch->draw_patches);
  79
  80         if (is_a3xx(ctx->screen))
  81                 util_dynarray_init(&batch->rbrc_patches);
  82
  83         assert(batch->resources->entries == 0);
  84
  85         util_dynarray_init(&batch->samples);
  86 }
  87
  88 struct fd_batch *
  89 fd_batch_create(struct fd_context *ctx)
  90 {
  91         struct fd_batch *batch = CALLOC_STRUCT(fd_batch);
  92
  93         if (!batch)
  94                 return NULL;
  95
  96         DBG("%p", batch);
  97
  98         pipe_reference_init(&batch->reference, 1);
  99         batch->ctx = ctx;
 100
 101         batch->resources = _mesa_set_create(NULL, _mesa_hash_pointer,
 102                         _mesa_key_pointer_equal);
 103
 104         batch_init(batch);
 105
 106         return batch;
 107 }
 108
 109 static void
 110 batch_fini(struct fd_batch *batch)
 111 {
 112         pipe_resource_reference(&batch->query_buf, NULL);
 113
 114         if (batch->in_fence_fd != -1)
 115                 close(batch->in_fence_fd);
 116
 117         fd_ringbuffer_del(batch->draw);
 118         fd_ringbuffer_del(batch->binning);
 119         fd_ringbuffer_del(batch->gmem);
 120
 121         util_dynarray_fini(&batch->draw_patches);
 122
 123         if (is_a3xx(batch->ctx->screen))
 124                 util_dynarray_fini(&batch->rbrc_patches);
 125
 126         while (batch->samples.size > 0) {
 127                 struct fd_hw_sample *samp =
 128                         util_dynarray_pop(&batch->samples, struct fd_hw_sample *);
 129                 fd_hw_sample_reference(batch->ctx, &samp, NULL);
 130         }
 131         util_dynarray_fini(&batch->samples);
 132
 133         if (batch->ctx->screen->reorder)
 134                 util_queue_fence_destroy(&batch->flush_fence);
 135 }
 136
 137 static void
 138 batch_flush_reset_dependencies(struct fd_batch *batch, bool flush)
 139 {
 140         struct fd_batch_cache *cache = &batch->ctx->screen->batch_cache;
 141         struct fd_batch *dep;
 142
 143         foreach_batch(dep, cache, batch->dependents_mask) {
 144                 if (flush)
 145                         fd_batch_flush(dep, false);
 146                 fd_batch_reference(&dep, NULL);
 147         }
 148
 149         batch->dependents_mask = 0;
 150 }
 151
 152 static void
 153 batch_reset_resources_locked(struct fd_batch *batch)
 154 {
 155         struct set_entry *entry;
 156
 157         pipe_mutex_assert_locked(batch->ctx->screen->lock);
 158
 159         set_foreach(batch->resources, entry) {
 160                 struct fd_resource *rsc = (struct fd_resource *)entry->key;
 161                 _mesa_set_remove(batch->resources, entry);
 162                 debug_assert(rsc->batch_mask & (1 << batch->idx));
 163                 rsc->batch_mask &= ~(1 << batch->idx);
 164                 if (rsc->write_batch == batch)
 165                         fd_batch_reference_locked(&rsc->write_batch, NULL);
 166         }
 167 }
 168
 169 static void
 170 batch_reset_resources(struct fd_batch *batch)
 171 {
 172         pipe_mutex_lock(batch->ctx->screen->lock);
 173         batch_reset_resources_locked(batch);
 174         pipe_mutex_unlock(batch->ctx->screen->lock);
 175 }
 176
 177 static void
 178 batch_reset(struct fd_batch *batch)
 179 {
 180         DBG("%p", batch);
 181
 182         fd_batch_sync(batch);
 183
 184         batch_flush_reset_dependencies(batch, false);
 185         batch_reset_resources(batch);
 186
 187         batch_fini(batch);
 188         batch_init(batch);
 189 }
 190
 191 void
 192 fd_batch_reset(struct fd_batch *batch)
 193 {
 194         if (batch->needs_flush)
 195                 batch_reset(batch);
 196 }
 197
 198 void
 199 __fd_batch_destroy(struct fd_batch *batch)
 200 {
 201         DBG("%p", batch);
 202
 203         util_copy_framebuffer_state(&batch->framebuffer, NULL);
 204
 205         pipe_mutex_lock(batch->ctx->screen->lock);
 206         fd_bc_invalidate_batch(batch, true);
 207         pipe_mutex_unlock(batch->ctx->screen->lock);
 208
 209         batch_fini(batch);
 210
 211         batch_reset_resources(batch);
 212         debug_assert(batch->resources->entries == 0);
 213         _mesa_set_destroy(batch->resources, NULL);
 214
 215         batch_flush_reset_dependencies(batch, false);
 216         debug_assert(batch->dependents_mask == 0);
 217
 218         free(batch);
 219 }
 220
 221 void
 222 __fd_batch_describe(char* buf, const struct fd_batch *batch)
 223 {
 224         util_sprintf(buf, "fd_batch<%u>", batch->seqno);
 225 }
 226
 227 void
 228 fd_batch_sync(struct fd_batch *batch)
 229 {
 230         if (!batch->ctx->screen->reorder)
 231                 return;
 232         util_queue_job_wait(&batch->flush_fence);
 233 }
 234
 235 static void
 236 batch_flush_func(void *job, int id)
 237 {
 238         struct fd_batch *batch = job;
 239
 240         fd_gmem_render_tiles(batch);
 241         batch_reset_resources(batch);
 242 }
 243
 244 static void
 245 batch_cleanup_func(void *job, int id)
 246 {
 247         struct fd_batch *batch = job;
 248         fd_batch_reference(&batch, NULL);
 249 }
 250
 251 static void
 252 batch_flush(struct fd_batch *batch)
 253 {
 254         DBG("%p: needs_flush=%d", batch, batch->needs_flush);
 255
 256         if (!batch->needs_flush)
 257                 return;
 258
 259         batch->needs_flush = false;
 260
 261         /* close out the draw cmds by making sure any active queries are
 262          * paused:
 263          */
 264         fd_hw_query_set_stage(batch, batch->draw, FD_STAGE_NULL);
 265
 266         batch->ctx->dirty = ~0;
 267         batch_flush_reset_dependencies(batch, true);
 268
 269         if (batch->ctx->screen->reorder) {
 270                 struct fd_batch *tmp = NULL;
 271                 fd_batch_reference(&tmp, batch);
 272
 273                 if (!util_queue_is_initialized(&batch->ctx->flush_queue))
 274                         util_queue_init(&batch->ctx->flush_queue, "flush_queue", 16, 1);
 275
 276                 util_queue_add_job(&batch->ctx->flush_queue,
 277                                 batch, &batch->flush_fence,
 278                                 batch_flush_func, batch_cleanup_func);
 279         } else {
 280                 fd_gmem_render_tiles(batch);
 281                 batch_reset_resources(batch);
 282         }
 283
 284         debug_assert(batch->reference.count > 0);
 285
 286         if (batch == batch->ctx->batch) {
 287                 batch_reset(batch);
 288         } else {
 289                 pipe_mutex_lock(batch->ctx->screen->lock);
 290                 fd_bc_invalidate_batch(batch, false);
 291                 pipe_mutex_unlock(batch->ctx->screen->lock);
 292         }
 293 }
 294
 295 /* NOTE: could drop the last ref to batch */
 296 void
 297 fd_batch_flush(struct fd_batch *batch, bool sync)
 298 {
 299         /* NOTE: we need to hold an extra ref across the body of flush,
 300          * since the last ref to this batch could be dropped when cleaning
 301          * up used_resources
 302          */
 303         struct fd_batch *tmp = NULL;
 304         fd_batch_reference(&tmp, batch);
 305         batch_flush(tmp);
 306         if (sync)
 307                 fd_batch_sync(tmp);
 308         fd_batch_reference(&tmp, NULL);
 309 }
 310
 311 /* does 'batch' depend directly or indirectly on 'other' ? */
 312 static bool
 313 batch_depends_on(struct fd_batch *batch, struct fd_batch *other)
 314 {
 315         struct fd_batch_cache *cache = &batch->ctx->screen->batch_cache;
 316         struct fd_batch *dep;
 317
 318         if (batch->dependents_mask & (1 << other->idx))
 319                 return true;
 320
 321         foreach_batch(dep, cache, batch->dependents_mask)
 322                 if (batch_depends_on(batch, dep))
 323                         return true;
 324
 325         return false;
 326 }
 327
 328 static void
 329 batch_add_dep(struct fd_batch *batch, struct fd_batch *dep)
 330 {
 331         if (batch->dependents_mask & (1 << dep->idx))
 332                 return;
 333
 334         /* if the new depedency already depends on us, we need to flush
 335          * to avoid a loop in the dependency graph.
 336          */
 337         if (batch_depends_on(dep, batch)) {
 338                 DBG("%p: flush forced on %p!", batch, dep);
 339                 pipe_mutex_unlock(batch->ctx->screen->lock);
 340                 fd_batch_flush(dep, false);
 341                 pipe_mutex_lock(batch->ctx->screen->lock);
 342         } else {
 343                 struct fd_batch *other = NULL;
 344                 fd_batch_reference_locked(&other, dep);
 345                 batch->dependents_mask |= (1 << dep->idx);
 346                 DBG("%p: added dependency on %p", batch, dep);
 347         }
 348 }
 349
 350 void
 351 fd_batch_resource_used(struct fd_batch *batch, struct fd_resource *rsc, bool write)
 352 {
 353         pipe_mutex_assert_locked(batch->ctx->screen->lock);
 354
 355         if (rsc->stencil)
 356                 fd_batch_resource_used(batch, rsc->stencil, write);
 357
 358         DBG("%p: %s %p", batch, write ? "write" : "read", rsc);
 359
 360         /* note, invalidate write batch, to avoid further writes to rsc
 361          * resulting in a write-after-read hazard.
 362          */
 363
 364         if (write) {
 365                 /* if we are pending read or write by any other batch: */
 366                 if (rsc->batch_mask != (1 << batch->idx)) {
 367                         struct fd_batch_cache *cache = &batch->ctx->screen->batch_cache;
 368                         struct fd_batch *dep;
 369                         foreach_batch(dep, cache, rsc->batch_mask) {
 370                                 struct fd_batch *b = NULL;
 371                                 /* note that batch_add_dep could flush and unref dep, so
 372                                  * we need to hold a reference to keep it live for the
 373                                  * fd_bc_invalidate_batch()
 374                                  */
 375                                 fd_batch_reference(&b, dep);
 376                                 batch_add_dep(batch, b);
 377                                 fd_bc_invalidate_batch(b, false);
 378                                 fd_batch_reference_locked(&b, NULL);
 379                         }
 380                 }
 381                 fd_batch_reference_locked(&rsc->write_batch, batch);
 382         } else {
 383                 if (rsc->write_batch) {
 384                         batch_add_dep(batch, rsc->write_batch);
 385                         fd_bc_invalidate_batch(rsc->write_batch, false);
 386                 }
 387         }
 388
 389         if (rsc->batch_mask & (1 << batch->idx))
 390                 return;
 391
 392         debug_assert(!_mesa_set_search(batch->resources, rsc));
 393
 394         _mesa_set_add(batch->resources, rsc);
 395         rsc->batch_mask |= (1 << batch->idx);
 396 }
 397
 398 void
 399 fd_batch_check_size(struct fd_batch *batch)
 400 {
 401         if (fd_device_version(batch->ctx->screen->dev) >= FD_VERSION_UNLIMITED_CMDS)
 402                 return;
 403
 404         struct fd_ringbuffer *ring = batch->draw;
 405         if (((ring->cur - ring->start) > (ring->size/4 - 0x1000)) ||
 406                         (fd_mesa_debug & FD_DBG_FLUSH))
 407                 fd_batch_flush(batch, true);
 408 }
 409
 410 /* emit a WAIT_FOR_IDLE only if needed, ie. if there has not already
 411  * been one since last draw:
 412  */
 413 void
 414 fd_wfi(struct fd_batch *batch, struct fd_ringbuffer *ring)
 415 {
 416         if (batch->needs_wfi) {
 417                 if (batch->ctx->screen->gpu_id >= 500)
 418                         OUT_WFI5(ring);
 419                 else
 420                         OUT_WFI(ring);
 421                 batch->needs_wfi = false;
 422         }
 423 }