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