src/gallium/drivers/v3d/v3d_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 v3d_job.c
  25  *
  26  * Functions for submitting VC5 render jobs to the kernel.
  27  */
  28
  29 #include <xf86drm.h>
  30 #include "v3d_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 v3d_job_free(struct v3d_context *v3d, struct v3d_job *job)
  42 {
  43         set_foreach(job->bos, entry) {
  44                 struct v3d_bo *bo = (struct v3d_bo *)entry->key;
  45                 v3d_bo_unreference(&bo);
  46         }
  47
  48         _mesa_hash_table_remove_key(v3d->jobs, &job->key);
  49
  50         if (job->write_prscs) {
  51                 set_foreach(job->write_prscs, entry) {
  52                         const struct pipe_resource *prsc = entry->key;
  53
  54                         _mesa_hash_table_remove_key(v3d->write_jobs, prsc);
  55                 }
  56         }
  57
  58         for (int i = 0; i < V3D_MAX_DRAW_BUFFERS; i++) {
  59                 if (job->cbufs[i]) {
  60                         _mesa_hash_table_remove_key(v3d->write_jobs,
  61                                                     job->cbufs[i]->texture);
  62                         pipe_surface_reference(&job->cbufs[i], NULL);
  63                 }
  64         }
  65         if (job->zsbuf) {
  66                 struct v3d_resource *rsc = v3d_resource(job->zsbuf->texture);
  67                 if (rsc->separate_stencil)
  68                         _mesa_hash_table_remove_key(v3d->write_jobs,
  69                                                     &rsc->separate_stencil->base);
  70
  71                 _mesa_hash_table_remove_key(v3d->write_jobs,
  72                                             job->zsbuf->texture);
  73                 pipe_surface_reference(&job->zsbuf, NULL);
  74         }
  75
  76         if (v3d->job == job)
  77                 v3d->job = NULL;
  78
  79         v3d_destroy_cl(&job->bcl);
  80         v3d_destroy_cl(&job->rcl);
  81         v3d_destroy_cl(&job->indirect);
  82         v3d_bo_unreference(&job->tile_alloc);
  83         v3d_bo_unreference(&job->tile_state);
  84
  85         ralloc_free(job);
  86 }
  87
  88 static struct v3d_job *
  89 v3d_job_create(struct v3d_context *v3d)
  90 {
  91         struct v3d_job *job = rzalloc(v3d, struct v3d_job);
  92
  93         job->v3d = v3d;
  94
  95         v3d_init_cl(job, &job->bcl);
  96         v3d_init_cl(job, &job->rcl);
  97         v3d_init_cl(job, &job->indirect);
  98
  99         job->draw_min_x = ~0;
 100         job->draw_min_y = ~0;
 101         job->draw_max_x = 0;
 102         job->draw_max_y = 0;
 103
 104         job->bos = _mesa_set_create(job,
 105                                     _mesa_hash_pointer,
 106                                     _mesa_key_pointer_equal);
 107         return job;
 108 }
 109
 110 void
 111 v3d_job_add_bo(struct v3d_job *job, struct v3d_bo *bo)
 112 {
 113         if (!bo)
 114                 return;
 115
 116         if (_mesa_set_search(job->bos, bo))
 117                 return;
 118
 119         v3d_bo_reference(bo);
 120         _mesa_set_add(job->bos, bo);
 121         job->referenced_size += bo->size;
 122
 123         uint32_t *bo_handles = (void *)(uintptr_t)job->submit.bo_handles;
 124
 125         if (job->submit.bo_handle_count >= job->bo_handles_size) {
 126                 job->bo_handles_size = MAX2(4, job->bo_handles_size * 2);
 127                 bo_handles = reralloc(job, bo_handles,
 128                                       uint32_t, job->bo_handles_size);
 129                 job->submit.bo_handles = (uintptr_t)(void *)bo_handles;
 130         }
 131         bo_handles[job->submit.bo_handle_count++] = bo->handle;
 132 }
 133
 134 void
 135 v3d_job_add_write_resource(struct v3d_job *job, struct pipe_resource *prsc)
 136 {
 137         struct v3d_context *v3d = job->v3d;
 138
 139         if (!job->write_prscs) {
 140                 job->write_prscs = _mesa_set_create(job,
 141                                                     _mesa_hash_pointer,
 142                                                     _mesa_key_pointer_equal);
 143         }
 144
 145         _mesa_set_add(job->write_prscs, prsc);
 146         _mesa_hash_table_insert(v3d->write_jobs, prsc, job);
 147 }
 148
 149 void
 150 v3d_flush_jobs_writing_resource(struct v3d_context *v3d,
 151                                 struct pipe_resource *prsc)
 152 {
 153         struct hash_entry *entry = _mesa_hash_table_search(v3d->write_jobs,
 154                                                            prsc);
 155         if (entry) {
 156                 struct v3d_job *job = entry->data;
 157                 v3d_job_submit(v3d, job);
 158         }
 159 }
 160
 161 void
 162 v3d_flush_jobs_reading_resource(struct v3d_context *v3d,
 163                                 struct pipe_resource *prsc)
 164 {
 165         struct v3d_resource *rsc = v3d_resource(prsc);
 166
 167         v3d_flush_jobs_writing_resource(v3d, prsc);
 168
 169         hash_table_foreach(v3d->jobs, entry) {
 170                 struct v3d_job *job = entry->data;
 171
 172                 if (_mesa_set_search(job->bos, rsc->bo)) {
 173                         v3d_job_submit(v3d, job);
 174                         /* Reminder: v3d->jobs is safe to keep iterating even
 175                          * after deletion of an entry.
 176                          */
 177                         continue;
 178                 }
 179         }
 180 }
 181
 182 static void
 183 v3d_job_set_tile_buffer_size(struct v3d_job *job)
 184 {
 185         static const uint8_t tile_sizes[] = {
 186                 64, 64,
 187                 64, 32,
 188                 32, 32,
 189                 32, 16,
 190                 16, 16,
 191         };
 192         int tile_size_index = 0;
 193         if (job->msaa)
 194                 tile_size_index += 2;
 195
 196         if (job->cbufs[3] || job->cbufs[2])
 197                 tile_size_index += 2;
 198         else if (job->cbufs[1])
 199                 tile_size_index++;
 200
 201         int max_bpp = RENDER_TARGET_MAXIMUM_32BPP;
 202         for (int i = 0; i < V3D_MAX_DRAW_BUFFERS; i++) {
 203                 if (job->cbufs[i]) {
 204                         struct v3d_surface *surf = v3d_surface(job->cbufs[i]);
 205                         max_bpp = MAX2(max_bpp, surf->internal_bpp);
 206                 }
 207         }
 208         job->internal_bpp = max_bpp;
 209         STATIC_ASSERT(RENDER_TARGET_MAXIMUM_32BPP == 0);
 210         tile_size_index += max_bpp;
 211
 212         assert(tile_size_index < ARRAY_SIZE(tile_sizes));
 213         job->tile_width = tile_sizes[tile_size_index * 2 + 0];
 214         job->tile_height = tile_sizes[tile_size_index * 2 + 1];
 215 }
 216
 217 /**
 218  * Returns a v3d_job struture for tracking V3D rendering to a particular FBO.
 219  *
 220  * If we've already started rendering to this FBO, then return the same job,
 221  * otherwise make a new one.  If we're beginning rendering to an FBO, make
 222  * sure that any previous reads of the FBO (or writes to its color/Z surfaces)
 223  * have been flushed.
 224  */
 225 struct v3d_job *
 226 v3d_get_job(struct v3d_context *v3d,
 227             struct pipe_surface **cbufs, struct pipe_surface *zsbuf)
 228 {
 229         /* Return the existing job for this FBO if we have one */
 230         struct v3d_job_key local_key = {
 231                 .cbufs = {
 232                         cbufs[0],
 233                         cbufs[1],
 234                         cbufs[2],
 235                         cbufs[3],
 236                 },
 237                 .zsbuf = zsbuf,
 238         };
 239         struct hash_entry *entry = _mesa_hash_table_search(v3d->jobs,
 240                                                            &local_key);
 241         if (entry)
 242                 return entry->data;
 243
 244         /* Creating a new job.  Make sure that any previous jobs reading or
 245          * writing these buffers are flushed.
 246          */
 247         struct v3d_job *job = v3d_job_create(v3d);
 248
 249         for (int i = 0; i < V3D_MAX_DRAW_BUFFERS; i++) {
 250                 if (cbufs[i]) {
 251                         v3d_flush_jobs_reading_resource(v3d, cbufs[i]->texture);
 252                         pipe_surface_reference(&job->cbufs[i], cbufs[i]);
 253
 254                         if (cbufs[i]->texture->nr_samples > 1)
 255                                 job->msaa = true;
 256                 }
 257         }
 258         if (zsbuf) {
 259                 v3d_flush_jobs_reading_resource(v3d, zsbuf->texture);
 260                 pipe_surface_reference(&job->zsbuf, zsbuf);
 261                 if (zsbuf->texture->nr_samples > 1)
 262                         job->msaa = true;
 263         }
 264
 265         for (int i = 0; i < V3D_MAX_DRAW_BUFFERS; i++) {
 266                 if (cbufs[i])
 267                         _mesa_hash_table_insert(v3d->write_jobs,
 268                                                 cbufs[i]->texture, job);
 269         }
 270         if (zsbuf) {
 271                 _mesa_hash_table_insert(v3d->write_jobs, zsbuf->texture, job);
 272
 273                 struct v3d_resource *rsc = v3d_resource(zsbuf->texture);
 274                 if (rsc->separate_stencil) {
 275                         v3d_flush_jobs_reading_resource(v3d,
 276                                                         &rsc->separate_stencil->base);
 277                         _mesa_hash_table_insert(v3d->write_jobs,
 278                                                 &rsc->separate_stencil->base,
 279                                                 job);
 280                 }
 281         }
 282
 283         memcpy(&job->key, &local_key, sizeof(local_key));
 284         _mesa_hash_table_insert(v3d->jobs, &job->key, job);
 285
 286         return job;
 287 }
 288
 289 struct v3d_job *
 290 v3d_get_job_for_fbo(struct v3d_context *v3d)
 291 {
 292         if (v3d->job)
 293                 return v3d->job;
 294
 295         struct pipe_surface **cbufs = v3d->framebuffer.cbufs;
 296         struct pipe_surface *zsbuf = v3d->framebuffer.zsbuf;
 297         struct v3d_job *job = v3d_get_job(v3d, cbufs, zsbuf);
 298
 299         if (v3d->framebuffer.samples >= 1)
 300                 job->msaa = true;
 301
 302         v3d_job_set_tile_buffer_size(job);
 303
 304         /* The dirty flags are tracking what's been updated while v3d->job has
 305          * been bound, so set them all to ~0 when switching between jobs.  We
 306          * also need to reset all state at the start of rendering.
 307          */
 308         v3d->dirty = ~0;
 309
 310         /* If we're binding to uninitialized buffers, no need to load their
 311          * contents before drawing.
 312          */
 313         for (int i = 0; i < 4; i++) {
 314                 if (cbufs[i]) {
 315                         struct v3d_resource *rsc = v3d_resource(cbufs[i]->texture);
 316                         if (!rsc->writes)
 317                                 job->clear |= PIPE_CLEAR_COLOR0 << i;
 318                 }
 319         }
 320
 321         if (zsbuf) {
 322                 struct v3d_resource *rsc = v3d_resource(zsbuf->texture);
 323                 if (!rsc->writes)
 324                         job->clear |= PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL;
 325         }
 326
 327         job->draw_tiles_x = DIV_ROUND_UP(v3d->framebuffer.width,
 328                                          job->tile_width);
 329         job->draw_tiles_y = DIV_ROUND_UP(v3d->framebuffer.height,
 330                                          job->tile_height);
 331
 332         v3d->job = job;
 333
 334         return job;
 335 }
 336
 337 static void
 338 v3d_clif_dump(struct v3d_context *v3d, struct v3d_job *job)
 339 {
 340         if (!(V3D_DEBUG & (V3D_DEBUG_CL | V3D_DEBUG_CLIF)))
 341                 return;
 342
 343         struct clif_dump *clif = clif_dump_init(&v3d->screen->devinfo,
 344                                                 stderr,
 345                                                 V3D_DEBUG & V3D_DEBUG_CL);
 346
 347         set_foreach(job->bos, entry) {
 348                 struct v3d_bo *bo = (void *)entry->key;
 349                 char *name = ralloc_asprintf(NULL, "%s_0x%x",
 350                                              bo->name, bo->offset);
 351
 352                 v3d_bo_map(bo);
 353                 clif_dump_add_bo(clif, name, bo->offset, bo->size, bo->map);
 354
 355                 ralloc_free(name);
 356         }
 357
 358         clif_dump(clif, &job->submit);
 359
 360         clif_dump_destroy(clif);
 361 }
 362
 363 /**
 364  * Submits the job to the kernel and then reinitializes it.
 365  */
 366 void
 367 v3d_job_submit(struct v3d_context *v3d, struct v3d_job *job)
 368 {
 369         MAYBE_UNUSED struct v3d_screen *screen = v3d->screen;
 370
 371         if (!job->needs_flush)
 372                 goto done;
 373
 374         if (v3d->screen->devinfo.ver >= 41)
 375                 v3d41_emit_rcl(job);
 376         else
 377                 v3d33_emit_rcl(job);
 378
 379         if (cl_offset(&job->bcl) > 0) {
 380                 if (screen->devinfo.ver >= 41)
 381                         v3d41_bcl_epilogue(v3d, job);
 382                 else
 383                         v3d33_bcl_epilogue(v3d, job);
 384         }
 385
 386         /* While the RCL will implicitly depend on the last RCL to have
 387          * finished, we also need to block on any previous TFU job we may have
 388          * dispatched.
 389          */
 390         job->submit.in_sync_rcl = v3d->out_sync;
 391
 392         /* Update the sync object for the last rendering by our context. */
 393         job->submit.out_sync = v3d->out_sync;
 394
 395         job->submit.bcl_end = job->bcl.bo->offset + cl_offset(&job->bcl);
 396         job->submit.rcl_end = job->rcl.bo->offset + cl_offset(&job->rcl);
 397
 398         /* On V3D 4.1, the tile alloc/state setup moved to register writes
 399          * instead of binner packets.
 400          */
 401         if (screen->devinfo.ver >= 41) {
 402                 v3d_job_add_bo(job, job->tile_alloc);
 403                 job->submit.qma = job->tile_alloc->offset;
 404                 job->submit.qms = job->tile_alloc->size;
 405
 406                 v3d_job_add_bo(job, job->tile_state);
 407                 job->submit.qts = job->tile_state->offset;
 408         }
 409
 410         v3d_clif_dump(v3d, job);
 411
 412         if (!(V3D_DEBUG & V3D_DEBUG_NORAST)) {
 413                 int ret;
 414
 415                 ret = v3d_ioctl(v3d->fd, DRM_IOCTL_V3D_SUBMIT_CL, &job->submit);
 416                 static bool warned = false;
 417                 if (ret && !warned) {
 418                         fprintf(stderr, "Draw call returned %s.  "
 419                                         "Expect corruption.\n", strerror(errno));
 420                         warned = true;
 421                 }
 422         }
 423
 424 done:
 425         v3d_job_free(v3d, job);
 426 }
 427
 428 static bool
 429 v3d_job_compare(const void *a, const void *b)
 430 {
 431         return memcmp(a, b, sizeof(struct v3d_job_key)) == 0;
 432 }
 433
 434 static uint32_t
 435 v3d_job_hash(const void *key)
 436 {
 437         return _mesa_hash_data(key, sizeof(struct v3d_job_key));
 438 }
 439
 440 void
 441 v3d_job_init(struct v3d_context *v3d)
 442 {
 443         v3d->jobs = _mesa_hash_table_create(v3d,
 444                                             v3d_job_hash,
 445                                             v3d_job_compare);
 446         v3d->write_jobs = _mesa_hash_table_create(v3d,
 447                                                   _mesa_hash_pointer,
 448                                                   _mesa_key_pointer_equal);
 449 }
 450