src/gallium/drivers/vc5/vc5_job.c

   1 /*
   2  * Copyright © 2014-2017 Broadcom
   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
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 /** @file vc5_job.c
  25  *
  26  * Functions for submitting VC5 render jobs to the kernel.
  27  */
  28
  29 #include <xf86drm.h>
  30 #include "vc5_context.h"
  31 /* The OQ/semaphore packets are the same across V3D versions. */
  32 #define V3D_VERSION 33
  33 #include "broadcom/cle/v3dx_pack.h"
  34 #include "broadcom/common/v3d_macros.h"
  35 #include "util/hash_table.h"
  36 #include "util/ralloc.h"
  37 #include "util/set.h"
  38 #include "broadcom/clif/clif_dump.h"
  39
  40 static void
  41 remove_from_ht(struct hash_table *ht, void *key)
  42 {
  43         struct hash_entry *entry = _mesa_hash_table_search(ht, key);
  44         _mesa_hash_table_remove(ht, entry);
  45 }
  46
  47 static void
  48 vc5_job_free(struct vc5_context *vc5, struct vc5_job *job)
  49 {
  50         struct set_entry *entry;
  51
  52         set_foreach(job->bos, entry) {
  53                 struct vc5_bo *bo = (struct vc5_bo *)entry->key;
  54                 vc5_bo_unreference(&bo);
  55         }
  56
  57         remove_from_ht(vc5->jobs, &job->key);
  58
  59         if (job->write_prscs) {
  60                 struct set_entry *entry;
  61
  62                 set_foreach(job->write_prscs, entry) {
  63                         const struct pipe_resource *prsc = entry->key;
  64
  65                         remove_from_ht(vc5->write_jobs, (void *)prsc);
  66                 }
  67         }
  68
  69         for (int i = 0; i < VC5_MAX_DRAW_BUFFERS; i++) {
  70                 if (job->cbufs[i]) {
  71                         remove_from_ht(vc5->write_jobs, job->cbufs[i]->texture);
  72                         pipe_surface_reference(&job->cbufs[i], NULL);
  73                 }
  74         }
  75         if (job->zsbuf) {
  76                 remove_from_ht(vc5->write_jobs, job->zsbuf->texture);
  77                 pipe_surface_reference(&job->zsbuf, NULL);
  78         }
  79
  80         if (vc5->job == job)
  81                 vc5->job = NULL;
  82
  83         vc5_destroy_cl(&job->bcl);
  84         vc5_destroy_cl(&job->rcl);
  85         vc5_destroy_cl(&job->indirect);
  86         vc5_bo_unreference(&job->tile_alloc);
  87         vc5_bo_unreference(&job->tile_state);
  88
  89         ralloc_free(job);
  90 }
  91
  92 static struct vc5_job *
  93 vc5_job_create(struct vc5_context *vc5)
  94 {
  95         struct vc5_job *job = rzalloc(vc5, struct vc5_job);
  96
  97         job->vc5 = vc5;
  98
  99         vc5_init_cl(job, &job->bcl);
 100         vc5_init_cl(job, &job->rcl);
 101         vc5_init_cl(job, &job->indirect);
 102
 103         job->draw_min_x = ~0;
 104         job->draw_min_y = ~0;
 105         job->draw_max_x = 0;
 106         job->draw_max_y = 0;
 107
 108         job->bos = _mesa_set_create(job,
 109                                     _mesa_hash_pointer,
 110                                     _mesa_key_pointer_equal);
 111         return job;
 112 }
 113
 114 void
 115 vc5_job_add_bo(struct vc5_job *job, struct vc5_bo *bo)
 116 {
 117         if (!bo)
 118                 return;
 119
 120         if (_mesa_set_search(job->bos, bo))
 121                 return;
 122
 123         vc5_bo_reference(bo);
 124         _mesa_set_add(job->bos, bo);
 125         job->referenced_size += bo->size;
 126
 127         uint32_t *bo_handles = (void *)(uintptr_t)job->submit.bo_handles;
 128
 129         if (job->submit.bo_handle_count >= job->bo_handles_size) {
 130                 job->bo_handles_size = MAX2(4, job->bo_handles_size * 2);
 131                 bo_handles = reralloc(job, bo_handles,
 132                                       uint32_t, job->bo_handles_size);
 133                 job->submit.bo_handles = (uintptr_t)(void *)bo_handles;
 134         }
 135         bo_handles[job->submit.bo_handle_count++] = bo->handle;
 136 }
 137
 138 void
 139 vc5_job_add_write_resource(struct vc5_job *job, struct pipe_resource *prsc)
 140 {
 141         struct vc5_context *vc5 = job->vc5;
 142
 143         if (!job->write_prscs) {
 144                 job->write_prscs = _mesa_set_create(job,
 145                                                     _mesa_hash_pointer,
 146                                                     _mesa_key_pointer_equal);
 147         }
 148
 149         _mesa_set_add(job->write_prscs, prsc);
 150         _mesa_hash_table_insert(vc5->write_jobs, prsc, job);
 151 }
 152
 153 void
 154 vc5_flush_jobs_writing_resource(struct vc5_context *vc5,
 155                                 struct pipe_resource *prsc)
 156 {
 157         struct hash_entry *entry = _mesa_hash_table_search(vc5->write_jobs,
 158                                                            prsc);
 159         if (entry) {
 160                 struct vc5_job *job = entry->data;
 161                 vc5_job_submit(vc5, job);
 162         }
 163 }
 164
 165 void
 166 vc5_flush_jobs_reading_resource(struct vc5_context *vc5,
 167                                 struct pipe_resource *prsc)
 168 {
 169         struct vc5_resource *rsc = vc5_resource(prsc);
 170
 171         vc5_flush_jobs_writing_resource(vc5, prsc);
 172
 173         struct hash_entry *entry;
 174         hash_table_foreach(vc5->jobs, entry) {
 175                 struct vc5_job *job = entry->data;
 176
 177                 if (_mesa_set_search(job->bos, rsc->bo)) {
 178                         vc5_job_submit(vc5, job);
 179                         /* Reminder: vc5->jobs is safe to keep iterating even
 180                          * after deletion of an entry.
 181                          */
 182                         continue;
 183                 }
 184         }
 185 }
 186
 187 static void
 188 vc5_job_set_tile_buffer_size(struct vc5_job *job)
 189 {
 190         static const uint8_t tile_sizes[] = {
 191                 64, 64,
 192                 64, 32,
 193                 32, 32,
 194                 32, 16,
 195                 16, 16,
 196         };
 197         int tile_size_index = 0;
 198         if (job->msaa)
 199                 tile_size_index += 2;
 200
 201         if (job->cbufs[3] || job->cbufs[2])
 202                 tile_size_index += 2;
 203         else if (job->cbufs[1])
 204                 tile_size_index++;
 205
 206         int max_bpp = RENDER_TARGET_MAXIMUM_32BPP;
 207         for (int i = 0; i < VC5_MAX_DRAW_BUFFERS; i++) {
 208                 if (job->cbufs[i]) {
 209                         struct vc5_surface *surf = vc5_surface(job->cbufs[i]);
 210                         max_bpp = MAX2(max_bpp, surf->internal_bpp);
 211                 }
 212         }
 213         job->internal_bpp = max_bpp;
 214         STATIC_ASSERT(RENDER_TARGET_MAXIMUM_32BPP == 0);
 215         tile_size_index += max_bpp;
 216
 217         assert(tile_size_index < ARRAY_SIZE(tile_sizes));
 218         job->tile_width = tile_sizes[tile_size_index * 2 + 0];
 219         job->tile_height = tile_sizes[tile_size_index * 2 + 1];
 220 }
 221
 222 /**
 223  * Returns a vc5_job struture for tracking V3D rendering to a particular FBO.
 224  *
 225  * If we've already started rendering to this FBO, then return old same job,
 226  * otherwise make a new one.  If we're beginning rendering to an FBO, make
 227  * sure that any previous reads of the FBO (or writes to its color/Z surfaces)
 228  * have been flushed.
 229  */
 230 struct vc5_job *
 231 vc5_get_job(struct vc5_context *vc5,
 232             struct pipe_surface **cbufs, struct pipe_surface *zsbuf)
 233 {
 234         /* Return the existing job for this FBO if we have one */
 235         struct vc5_job_key local_key = {
 236                 .cbufs = {
 237                         cbufs[0],
 238                         cbufs[1],
 239                         cbufs[2],
 240                         cbufs[3],
 241                 },
 242                 .zsbuf = zsbuf,
 243         };
 244         struct hash_entry *entry = _mesa_hash_table_search(vc5->jobs,
 245                                                            &local_key);
 246         if (entry)
 247                 return entry->data;
 248
 249         /* Creating a new job.  Make sure that any previous jobs reading or
 250          * writing these buffers are flushed.
 251          */
 252         struct vc5_job *job = vc5_job_create(vc5);
 253
 254         for (int i = 0; i < VC5_MAX_DRAW_BUFFERS; i++) {
 255                 if (cbufs[i]) {
 256                         vc5_flush_jobs_reading_resource(vc5, cbufs[i]->texture);
 257                         pipe_surface_reference(&job->cbufs[i], cbufs[i]);
 258
 259                         if (cbufs[i]->texture->nr_samples > 1)
 260                                 job->msaa = true;
 261                 }
 262         }
 263         if (zsbuf) {
 264                 vc5_flush_jobs_reading_resource(vc5, zsbuf->texture);
 265                 pipe_surface_reference(&job->zsbuf, zsbuf);
 266                 if (zsbuf->texture->nr_samples > 1)
 267                         job->msaa = true;
 268         }
 269
 270         vc5_job_set_tile_buffer_size(job);
 271
 272         for (int i = 0; i < VC5_MAX_DRAW_BUFFERS; i++) {
 273                 if (cbufs[i])
 274                         _mesa_hash_table_insert(vc5->write_jobs,
 275                                                 cbufs[i]->texture, job);
 276         }
 277         if (zsbuf)
 278                 _mesa_hash_table_insert(vc5->write_jobs, zsbuf->texture, job);
 279
 280         memcpy(&job->key, &local_key, sizeof(local_key));
 281         _mesa_hash_table_insert(vc5->jobs, &job->key, job);
 282
 283         return job;
 284 }
 285
 286 struct vc5_job *
 287 vc5_get_job_for_fbo(struct vc5_context *vc5)
 288 {
 289         if (vc5->job)
 290                 return vc5->job;
 291
 292         struct pipe_surface **cbufs = vc5->framebuffer.cbufs;
 293         struct pipe_surface *zsbuf = vc5->framebuffer.zsbuf;
 294         struct vc5_job *job = vc5_get_job(vc5, cbufs, zsbuf);
 295
 296         /* The dirty flags are tracking what's been updated while vc5->job has
 297          * been bound, so set them all to ~0 when switching between jobs.  We
 298          * also need to reset all state at the start of rendering.
 299          */
 300         vc5->dirty = ~0;
 301
 302         /* If we're binding to uninitialized buffers, no need to load their
 303          * contents before drawing.
 304          */
 305         for (int i = 0; i < 4; i++) {
 306                 if (cbufs[i]) {
 307                         struct vc5_resource *rsc = vc5_resource(cbufs[i]->texture);
 308                         if (!rsc->writes)
 309                                 job->cleared |= PIPE_CLEAR_COLOR0 << i;
 310                 }
 311         }
 312
 313         if (zsbuf) {
 314                 struct vc5_resource *rsc = vc5_resource(zsbuf->texture);
 315                 if (!rsc->writes)
 316                         job->cleared |= PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL;
 317         }
 318
 319         job->draw_tiles_x = DIV_ROUND_UP(vc5->framebuffer.width,
 320                                          job->tile_width);
 321         job->draw_tiles_y = DIV_ROUND_UP(vc5->framebuffer.height,
 322                                          job->tile_height);
 323
 324         vc5->job = job;
 325
 326         return job;
 327 }
 328
 329 static bool
 330 vc5_clif_dump_lookup(void *data, uint32_t addr, void **vaddr)
 331 {
 332         struct vc5_job *job = data;
 333         struct set_entry *entry;
 334
 335         set_foreach(job->bos, entry) {
 336                 struct vc5_bo *bo = (void *)entry->key;
 337
 338                 if (addr >= bo->offset &&
 339                     addr < bo->offset + bo->size) {
 340                         vc5_bo_map(bo);
 341                         *vaddr = bo->map + addr - bo->offset;
 342                         return true;
 343                 }
 344         }
 345
 346         return false;
 347 }
 348
 349 static void
 350 vc5_clif_dump(struct vc5_context *vc5, struct vc5_job *job)
 351 {
 352         if (!(V3D_DEBUG & V3D_DEBUG_CL))
 353                 return;
 354
 355         struct clif_dump *clif = clif_dump_init(&vc5->screen->devinfo,
 356                                                 stderr, vc5_clif_dump_lookup,
 357                                                 job);
 358
 359         fprintf(stderr, "BCL: 0x%08x..0x%08x\n",
 360                 job->submit.bcl_start, job->submit.bcl_end);
 361
 362         clif_dump_add_cl(clif, job->submit.bcl_start, job->submit.bcl_end);
 363
 364         fprintf(stderr, "RCL: 0x%08x..0x%08x\n",
 365                 job->submit.rcl_start, job->submit.rcl_end);
 366         clif_dump_add_cl(clif, job->submit.rcl_start, job->submit.rcl_end);
 367 }
 368
 369 /**
 370  * Submits the job to the kernel and then reinitializes it.
 371  */
 372 void
 373 vc5_job_submit(struct vc5_context *vc5, struct vc5_job *job)
 374 {
 375         MAYBE_UNUSED struct vc5_screen *screen = vc5->screen;
 376
 377         if (!job->needs_flush)
 378                 goto done;
 379
 380         if (vc5->screen->devinfo.ver >= 41)
 381                 v3d41_emit_rcl(job);
 382         else
 383                 v3d33_emit_rcl(job);
 384
 385         if (cl_offset(&job->bcl) > 0) {
 386                 if (screen->devinfo.ver >= 41)
 387                         v3d41_bcl_epilogue(vc5, job);
 388                 else
 389                         v3d33_bcl_epilogue(vc5, job);
 390         }
 391
 392         job->submit.out_sync = vc5->out_sync;
 393         job->submit.bcl_end = job->bcl.bo->offset + cl_offset(&job->bcl);
 394         job->submit.rcl_end = job->rcl.bo->offset + cl_offset(&job->rcl);
 395
 396         /* On V3D 4.1, the tile alloc/state setup moved to register writes
 397          * instead of binner packets.
 398          */
 399         if (screen->devinfo.ver >= 41) {
 400                 vc5_job_add_bo(job, job->tile_alloc);
 401                 job->submit.qma = job->tile_alloc->offset;
 402                 job->submit.qms = job->tile_alloc->size;
 403
 404                 vc5_job_add_bo(job, job->tile_state);
 405                 job->submit.qts = job->tile_state->offset;
 406         }
 407
 408         vc5_clif_dump(vc5, job);
 409
 410         if (!(V3D_DEBUG & V3D_DEBUG_NORAST)) {
 411                 int ret;
 412
 413 #ifndef USE_VC5_SIMULATOR
 414                 ret = drmIoctl(vc5->fd, DRM_IOCTL_V3D_SUBMIT_CL, &job->submit);
 415 #else
 416                 ret = vc5_simulator_flush(vc5, &job->submit, job);
 417 #endif
 418                 static bool warned = false;
 419                 if (ret && !warned) {
 420                         fprintf(stderr, "Draw call returned %s.  "
 421                                         "Expect corruption.\n", strerror(errno));
 422                         warned = true;
 423                 }
 424         }
 425
 426 done:
 427         vc5_job_free(vc5, job);
 428 }
 429
 430 static bool
 431 vc5_job_compare(const void *a, const void *b)
 432 {
 433         return memcmp(a, b, sizeof(struct vc5_job_key)) == 0;
 434 }
 435
 436 static uint32_t
 437 vc5_job_hash(const void *key)
 438 {
 439         return _mesa_hash_data(key, sizeof(struct vc5_job_key));
 440 }
 441
 442 void
 443 vc5_job_init(struct vc5_context *vc5)
 444 {
 445         vc5->jobs = _mesa_hash_table_create(vc5,
 446                                             vc5_job_hash,
 447                                             vc5_job_compare);
 448         vc5->write_jobs = _mesa_hash_table_create(vc5,
 449                                                   _mesa_hash_pointer,
 450                                                   _mesa_key_pointer_equal);
 451 }
 452