drivers/gpu/drm/v3d/v3d_gem.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /* Copyright (C) 2014-2018 Broadcom */
   3
   4 #include <linux/device.h>
   5 #include <linux/dma-mapping.h>
   6 #include <linux/io.h>
   7 #include <linux/module.h>
   8 #include <linux/platform_device.h>
   9 #include <linux/pm_runtime.h>
  10 #include <linux/reset.h>
  11 #include <linux/sched/signal.h>
  12 #include <linux/uaccess.h>
  13
  14 #include <drm/drm_syncobj.h>
  15 #include <uapi/drm/v3d_drm.h>
  16
  17 #include "v3d_drv.h"
  18 #include "v3d_regs.h"
  19 #include "v3d_trace.h"
  20
  21 static void
  22 v3d_init_core(struct v3d_dev *v3d, int core)
  23 {
  24         /* Set OVRTMUOUT, which means that the texture sampler uniform
  25          * configuration's tmu output type field is used, instead of
  26          * using the hardware default behavior based on the texture
  27          * type.  If you want the default behavior, you can still put
  28          * "2" in the indirect texture state's output_type field.
  29          */
  30         if (v3d->ver < 40)
  31                 V3D_CORE_WRITE(core, V3D_CTL_MISCCFG, V3D_MISCCFG_OVRTMUOUT);
  32
  33         /* Whenever we flush the L2T cache, we always want to flush
  34          * the whole thing.
  35          */
  36         V3D_CORE_WRITE(core, V3D_CTL_L2TFLSTA, 0);
  37         V3D_CORE_WRITE(core, V3D_CTL_L2TFLEND, ~0);
  38 }
  39
  40 /* Sets invariant state for the HW. */
  41 static void
  42 v3d_init_hw_state(struct v3d_dev *v3d)
  43 {
  44         v3d_init_core(v3d, 0);
  45 }
  46
  47 static void
  48 v3d_idle_axi(struct v3d_dev *v3d, int core)
  49 {
  50         V3D_CORE_WRITE(core, V3D_GMP_CFG, V3D_GMP_CFG_STOP_REQ);
  51
  52         if (wait_for((V3D_CORE_READ(core, V3D_GMP_STATUS) &
  53                       (V3D_GMP_STATUS_RD_COUNT_MASK |
  54                        V3D_GMP_STATUS_WR_COUNT_MASK |
  55                        V3D_GMP_STATUS_CFG_BUSY)) == 0, 100)) {
  56                 DRM_ERROR("Failed to wait for safe GMP shutdown\n");
  57         }
  58 }
  59
  60 static void
  61 v3d_idle_gca(struct v3d_dev *v3d)
  62 {
  63         if (v3d->ver >= 41)
  64                 return;
  65
  66         V3D_GCA_WRITE(V3D_GCA_SAFE_SHUTDOWN, V3D_GCA_SAFE_SHUTDOWN_EN);
  67
  68         if (wait_for((V3D_GCA_READ(V3D_GCA_SAFE_SHUTDOWN_ACK) &
  69                       V3D_GCA_SAFE_SHUTDOWN_ACK_ACKED) ==
  70                      V3D_GCA_SAFE_SHUTDOWN_ACK_ACKED, 100)) {
  71                 DRM_ERROR("Failed to wait for safe GCA shutdown\n");
  72         }
  73 }
  74
  75 static void
  76 v3d_reset_by_bridge(struct v3d_dev *v3d)
  77 {
  78         int version = V3D_BRIDGE_READ(V3D_TOP_GR_BRIDGE_REVISION);
  79
  80         if (V3D_GET_FIELD(version, V3D_TOP_GR_BRIDGE_MAJOR) == 2) {
  81                 V3D_BRIDGE_WRITE(V3D_TOP_GR_BRIDGE_SW_INIT_0,
  82                                  V3D_TOP_GR_BRIDGE_SW_INIT_0_V3D_CLK_108_SW_INIT);
  83                 V3D_BRIDGE_WRITE(V3D_TOP_GR_BRIDGE_SW_INIT_0, 0);
  84
  85                 /* GFXH-1383: The SW_INIT may cause a stray write to address 0
  86                  * of the unit, so reset it to its power-on value here.
  87                  */
  88                 V3D_WRITE(V3D_HUB_AXICFG, V3D_HUB_AXICFG_MAX_LEN_MASK);
  89         } else {
  90                 WARN_ON_ONCE(V3D_GET_FIELD(version,
  91                                            V3D_TOP_GR_BRIDGE_MAJOR) != 7);
  92                 V3D_BRIDGE_WRITE(V3D_TOP_GR_BRIDGE_SW_INIT_1,
  93                                  V3D_TOP_GR_BRIDGE_SW_INIT_1_V3D_CLK_108_SW_INIT);
  94                 V3D_BRIDGE_WRITE(V3D_TOP_GR_BRIDGE_SW_INIT_1, 0);
  95         }
  96 }
  97
  98 static void
  99 v3d_reset_v3d(struct v3d_dev *v3d)
 100 {
 101         if (v3d->reset)
 102                 reset_control_reset(v3d->reset);
 103         else
 104                 v3d_reset_by_bridge(v3d);
 105
 106         v3d_init_hw_state(v3d);
 107 }
 108
 109 void
 110 v3d_reset(struct v3d_dev *v3d)
 111 {
 112         struct drm_device *dev = &v3d->drm;
 113
 114         DRM_DEV_ERROR(dev->dev, "Resetting GPU for hang.\n");
 115         DRM_DEV_ERROR(dev->dev, "V3D_ERR_STAT: 0x%08x\n",
 116                       V3D_CORE_READ(0, V3D_ERR_STAT));
 117         trace_v3d_reset_begin(dev);
 118
 119         /* XXX: only needed for safe powerdown, not reset. */
 120         if (false)
 121                 v3d_idle_axi(v3d, 0);
 122
 123         v3d_idle_gca(v3d);
 124         v3d_reset_v3d(v3d);
 125
 126         v3d_mmu_set_page_table(v3d);
 127         v3d_irq_reset(v3d);
 128
 129         v3d_perfmon_stop(v3d, v3d->active_perfmon, false);
 130
 131         trace_v3d_reset_end(dev);
 132 }
 133
 134 static void
 135 v3d_flush_l3(struct v3d_dev *v3d)
 136 {
 137         if (v3d->ver < 41) {
 138                 u32 gca_ctrl = V3D_GCA_READ(V3D_GCA_CACHE_CTRL);
 139
 140                 V3D_GCA_WRITE(V3D_GCA_CACHE_CTRL,
 141                               gca_ctrl | V3D_GCA_CACHE_CTRL_FLUSH);
 142
 143                 if (v3d->ver < 33) {
 144                         V3D_GCA_WRITE(V3D_GCA_CACHE_CTRL,
 145                                       gca_ctrl & ~V3D_GCA_CACHE_CTRL_FLUSH);
 146                 }
 147         }
 148 }
 149
 150 /* Invalidates the (read-only) L2C cache.  This was the L2 cache for
 151  * uniforms and instructions on V3D 3.2.
 152  */
 153 static void
 154 v3d_invalidate_l2c(struct v3d_dev *v3d, int core)
 155 {
 156         if (v3d->ver > 32)
 157                 return;
 158
 159         V3D_CORE_WRITE(core, V3D_CTL_L2CACTL,
 160                        V3D_L2CACTL_L2CCLR |
 161                        V3D_L2CACTL_L2CENA);
 162 }
 163
 164 /* Invalidates texture L2 cachelines */
 165 static void
 166 v3d_flush_l2t(struct v3d_dev *v3d, int core)
 167 {
 168         /* While there is a busy bit (V3D_L2TCACTL_L2TFLS), we don't
 169          * need to wait for completion before dispatching the job --
 170          * L2T accesses will be stalled until the flush has completed.
 171          * However, we do need to make sure we don't try to trigger a
 172          * new flush while the L2_CLEAN queue is trying to
 173          * synchronously clean after a job.
 174          */
 175         mutex_lock(&v3d->cache_clean_lock);
 176         V3D_CORE_WRITE(core, V3D_CTL_L2TCACTL,
 177                        V3D_L2TCACTL_L2TFLS |
 178                        V3D_SET_FIELD(V3D_L2TCACTL_FLM_FLUSH, V3D_L2TCACTL_FLM));
 179         mutex_unlock(&v3d->cache_clean_lock);
 180 }
 181
 182 /* Cleans texture L1 and L2 cachelines (writing back dirty data).
 183  *
 184  * For cleaning, which happens from the CACHE_CLEAN queue after CSD has
 185  * executed, we need to make sure that the clean is done before
 186  * signaling job completion.  So, we synchronously wait before
 187  * returning, and we make sure that L2 invalidates don't happen in the
 188  * meantime to confuse our are-we-done checks.
 189  */
 190 void
 191 v3d_clean_caches(struct v3d_dev *v3d)
 192 {
 193         struct drm_device *dev = &v3d->drm;
 194         int core = 0;
 195
 196         trace_v3d_cache_clean_begin(dev);
 197
 198         V3D_CORE_WRITE(core, V3D_CTL_L2TCACTL, V3D_L2TCACTL_TMUWCF);
 199         if (wait_for(!(V3D_CORE_READ(core, V3D_CTL_L2TCACTL) &
 200                        V3D_L2TCACTL_TMUWCF), 100)) {
 201                 DRM_ERROR("Timeout waiting for TMU write combiner flush\n");
 202         }
 203
 204         mutex_lock(&v3d->cache_clean_lock);
 205         V3D_CORE_WRITE(core, V3D_CTL_L2TCACTL,
 206                        V3D_L2TCACTL_L2TFLS |
 207                        V3D_SET_FIELD(V3D_L2TCACTL_FLM_CLEAN, V3D_L2TCACTL_FLM));
 208
 209         if (wait_for(!(V3D_CORE_READ(core, V3D_CTL_L2TCACTL) &
 210                        V3D_L2TCACTL_L2TFLS), 100)) {
 211                 DRM_ERROR("Timeout waiting for L2T clean\n");
 212         }
 213
 214         mutex_unlock(&v3d->cache_clean_lock);
 215
 216         trace_v3d_cache_clean_end(dev);
 217 }
 218
 219 /* Invalidates the slice caches.  These are read-only caches. */
 220 static void
 221 v3d_invalidate_slices(struct v3d_dev *v3d, int core)
 222 {
 223         V3D_CORE_WRITE(core, V3D_CTL_SLCACTL,
 224                        V3D_SET_FIELD(0xf, V3D_SLCACTL_TVCCS) |
 225                        V3D_SET_FIELD(0xf, V3D_SLCACTL_TDCCS) |
 226                        V3D_SET_FIELD(0xf, V3D_SLCACTL_UCC) |
 227                        V3D_SET_FIELD(0xf, V3D_SLCACTL_ICC));
 228 }
 229
 230 void
 231 v3d_invalidate_caches(struct v3d_dev *v3d)
 232 {
 233         /* Invalidate the caches from the outside in.  That way if
 234          * another CL's concurrent use of nearby memory were to pull
 235          * an invalidated cacheline back in, we wouldn't leave stale
 236          * data in the inner cache.
 237          */
 238         v3d_flush_l3(v3d);
 239         v3d_invalidate_l2c(v3d, 0);
 240         v3d_flush_l2t(v3d, 0);
 241         v3d_invalidate_slices(v3d, 0);
 242 }
 243
 244 /* Takes the reservation lock on all the BOs being referenced, so that
 245  * at queue submit time we can update the reservations.
 246  *
 247  * We don't lock the RCL the tile alloc/state BOs, or overflow memory
 248  * (all of which are on exec->unref_list).  They're entirely private
 249  * to v3d, so we don't attach dma-buf fences to them.
 250  */
 251 static int
 252 v3d_lock_bo_reservations(struct v3d_job *job,
 253                          struct ww_acquire_ctx *acquire_ctx)
 254 {
 255         int i, ret;
 256
 257         ret = drm_gem_lock_reservations(job->bo, job->bo_count, acquire_ctx);
 258         if (ret)
 259                 return ret;
 260
 261         for (i = 0; i < job->bo_count; i++) {
 262                 ret = drm_sched_job_add_implicit_dependencies(&job->base,
 263                                                               job->bo[i], true);
 264                 if (ret) {
 265                         drm_gem_unlock_reservations(job->bo, job->bo_count,
 266                                                     acquire_ctx);
 267                         return ret;
 268                 }
 269         }
 270
 271         return 0;
 272 }
 273
 274 /**
 275  * v3d_lookup_bos() - Sets up job->bo[] with the GEM objects
 276  * referenced by the job.
 277  * @dev: DRM device
 278  * @file_priv: DRM file for this fd
 279  * @job: V3D job being set up
 280  * @bo_handles: GEM handles
 281  * @bo_count: Number of GEM handles passed in
 282  *
 283  * The command validator needs to reference BOs by their index within
 284  * the submitted job's BO list.  This does the validation of the job's
 285  * BO list and reference counting for the lifetime of the job.
 286  *
 287  * Note that this function doesn't need to unreference the BOs on
 288  * failure, because that will happen at v3d_exec_cleanup() time.
 289  */
 290 static int
 291 v3d_lookup_bos(struct drm_device *dev,
 292                struct drm_file *file_priv,
 293                struct v3d_job *job,
 294                u64 bo_handles,
 295                u32 bo_count)
 296 {
 297         u32 *handles;
 298         int ret = 0;
 299         int i;
 300
 301         job->bo_count = bo_count;
 302
 303         if (!job->bo_count) {
 304                 /* See comment on bo_index for why we have to check
 305                  * this.
 306                  */
 307                 DRM_DEBUG("Rendering requires BOs\n");
 308                 return -EINVAL;
 309         }
 310
 311         job->bo = kvmalloc_array(job->bo_count,
 312                                  sizeof(struct drm_gem_cma_object *),
 313                                  GFP_KERNEL | __GFP_ZERO);
 314         if (!job->bo) {
 315                 DRM_DEBUG("Failed to allocate validated BO pointers\n");
 316                 return -ENOMEM;
 317         }
 318
 319         handles = kvmalloc_array(job->bo_count, sizeof(u32), GFP_KERNEL);
 320         if (!handles) {
 321                 ret = -ENOMEM;
 322                 DRM_DEBUG("Failed to allocate incoming GEM handles\n");
 323                 goto fail;
 324         }
 325
 326         if (copy_from_user(handles,
 327                            (void __user *)(uintptr_t)bo_handles,
 328                            job->bo_count * sizeof(u32))) {
 329                 ret = -EFAULT;
 330                 DRM_DEBUG("Failed to copy in GEM handles\n");
 331                 goto fail;
 332         }
 333
 334         spin_lock(&file_priv->table_lock);
 335         for (i = 0; i < job->bo_count; i++) {
 336                 struct drm_gem_object *bo = idr_find(&file_priv->object_idr,
 337                                                      handles[i]);
 338                 if (!bo) {
 339                         DRM_DEBUG("Failed to look up GEM BO %d: %d\n",
 340                                   i, handles[i]);
 341                         ret = -ENOENT;
 342                         spin_unlock(&file_priv->table_lock);
 343                         goto fail;
 344                 }
 345                 drm_gem_object_get(bo);
 346                 job->bo[i] = bo;
 347         }
 348         spin_unlock(&file_priv->table_lock);
 349
 350 fail:
 351         kvfree(handles);
 352         return ret;
 353 }
 354
 355 static void
 356 v3d_job_free(struct kref *ref)
 357 {
 358         struct v3d_job *job = container_of(ref, struct v3d_job, refcount);
 359         int i;
 360
 361         for (i = 0; i < job->bo_count; i++) {
 362                 if (job->bo[i])
 363                         drm_gem_object_put(job->bo[i]);
 364         }
 365         kvfree(job->bo);
 366
 367         dma_fence_put(job->irq_fence);
 368         dma_fence_put(job->done_fence);
 369
 370         pm_runtime_mark_last_busy(job->v3d->drm.dev);
 371         pm_runtime_put_autosuspend(job->v3d->drm.dev);
 372
 373         if (job->perfmon)
 374                 v3d_perfmon_put(job->perfmon);
 375
 376         kfree(job);
 377 }
 378
 379 static void
 380 v3d_render_job_free(struct kref *ref)
 381 {
 382         struct v3d_render_job *job = container_of(ref, struct v3d_render_job,
 383                                                   base.refcount);
 384         struct v3d_bo *bo, *save;
 385
 386         list_for_each_entry_safe(bo, save, &job->unref_list, unref_head) {
 387                 drm_gem_object_put(&bo->base.base);
 388         }
 389
 390         v3d_job_free(ref);
 391 }
 392
 393 void v3d_job_cleanup(struct v3d_job *job)
 394 {
 395         if (!job)
 396                 return;
 397
 398         drm_sched_job_cleanup(&job->base);
 399         v3d_job_put(job);
 400 }
 401
 402 void v3d_job_put(struct v3d_job *job)
 403 {
 404         kref_put(&job->refcount, job->free);
 405 }
 406
 407 int
 408 v3d_wait_bo_ioctl(struct drm_device *dev, void *data,
 409                   struct drm_file *file_priv)
 410 {
 411         int ret;
 412         struct drm_v3d_wait_bo *args = data;
 413         ktime_t start = ktime_get();
 414         u64 delta_ns;
 415         unsigned long timeout_jiffies =
 416                 nsecs_to_jiffies_timeout(args->timeout_ns);
 417
 418         if (args->pad != 0)
 419                 return -EINVAL;
 420
 421         ret = drm_gem_dma_resv_wait(file_priv, args->handle,
 422                                     true, timeout_jiffies);
 423
 424         /* Decrement the user's timeout, in case we got interrupted
 425          * such that the ioctl will be restarted.
 426          */
 427         delta_ns = ktime_to_ns(ktime_sub(ktime_get(), start));
 428         if (delta_ns < args->timeout_ns)
 429                 args->timeout_ns -= delta_ns;
 430         else
 431                 args->timeout_ns = 0;
 432
 433         /* Asked to wait beyond the jiffie/scheduler precision? */
 434         if (ret == -ETIME && args->timeout_ns)
 435                 ret = -EAGAIN;
 436
 437         return ret;
 438 }
 439
 440 static int
 441 v3d_job_add_deps(struct drm_file *file_priv, struct v3d_job *job,
 442                  u32 in_sync, u32 point)
 443 {
 444         struct dma_fence *in_fence = NULL;
 445         int ret;
 446
 447         ret = drm_syncobj_find_fence(file_priv, in_sync, point, 0, &in_fence);
 448         if (ret == -EINVAL)
 449                 return ret;
 450
 451         return drm_sched_job_add_dependency(&job->base, in_fence);
 452 }
 453
 454 static int
 455 v3d_job_init(struct v3d_dev *v3d, struct drm_file *file_priv,
 456              void **container, size_t size, void (*free)(struct kref *ref),
 457              u32 in_sync, struct v3d_submit_ext *se, enum v3d_queue queue)
 458 {
 459         struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
 460         struct v3d_job *job;
 461         bool has_multisync = se && (se->flags & DRM_V3D_EXT_ID_MULTI_SYNC);
 462         int ret, i;
 463
 464         *container = kcalloc(1, size, GFP_KERNEL);
 465         if (!*container) {
 466                 DRM_ERROR("Cannot allocate memory for v3d job.");
 467                 return -ENOMEM;
 468         }
 469
 470         job = *container;
 471         job->v3d = v3d;
 472         job->free = free;
 473
 474         ret = pm_runtime_get_sync(v3d->drm.dev);
 475         if (ret < 0)
 476                 goto fail;
 477
 478         ret = drm_sched_job_init(&job->base, &v3d_priv->sched_entity[queue],
 479                                  v3d_priv);
 480         if (ret)
 481                 goto fail_job;
 482
 483         if (has_multisync) {
 484                 if (se->in_sync_count && se->wait_stage == queue) {
 485                         struct drm_v3d_sem __user *handle = u64_to_user_ptr(se->in_syncs);
 486
 487                         for (i = 0; i < se->in_sync_count; i++) {
 488                                 struct drm_v3d_sem in;
 489
 490                                 if (copy_from_user(&in, handle++, sizeof(in))) {
 491                                         ret = -EFAULT;
 492                                         DRM_DEBUG("Failed to copy wait dep handle.\n");
 493                                         goto fail_deps;
 494                                 }
 495                                 ret = v3d_job_add_deps(file_priv, job, in.handle, 0);
 496                                 if (ret)
 497                                         goto fail_deps;
 498                         }
 499                 }
 500         } else {
 501                 ret = v3d_job_add_deps(file_priv, job, in_sync, 0);
 502                 if (ret)
 503                         goto fail_deps;
 504         }
 505
 506         kref_init(&job->refcount);
 507
 508         return 0;
 509
 510 fail_deps:
 511         drm_sched_job_cleanup(&job->base);
 512 fail_job:
 513         pm_runtime_put_autosuspend(v3d->drm.dev);
 514 fail:
 515         kfree(*container);
 516         *container = NULL;
 517
 518         return ret;
 519 }
 520
 521 static void
 522 v3d_push_job(struct v3d_job *job)
 523 {
 524         drm_sched_job_arm(&job->base);
 525
 526         job->done_fence = dma_fence_get(&job->base.s_fence->finished);
 527
 528         /* put by scheduler job completion */
 529         kref_get(&job->refcount);
 530
 531         drm_sched_entity_push_job(&job->base);
 532 }
 533
 534 static void
 535 v3d_attach_fences_and_unlock_reservation(struct drm_file *file_priv,
 536                                          struct v3d_job *job,
 537                                          struct ww_acquire_ctx *acquire_ctx,
 538                                          u32 out_sync,
 539                                          struct v3d_submit_ext *se,
 540                                          struct dma_fence *done_fence)
 541 {
 542         struct drm_syncobj *sync_out;
 543         bool has_multisync = se && (se->flags & DRM_V3D_EXT_ID_MULTI_SYNC);
 544         int i;
 545
 546         for (i = 0; i < job->bo_count; i++) {
 547                 /* XXX: Use shared fences for read-only objects. */
 548                 dma_resv_add_excl_fence(job->bo[i]->resv,
 549                                         job->done_fence);
 550         }
 551
 552         drm_gem_unlock_reservations(job->bo, job->bo_count, acquire_ctx);
 553
 554         /* Update the return sync object for the job */
 555         /* If it only supports a single signal semaphore*/
 556         if (!has_multisync) {
 557                 sync_out = drm_syncobj_find(file_priv, out_sync);
 558                 if (sync_out) {
 559                         drm_syncobj_replace_fence(sync_out, done_fence);
 560                         drm_syncobj_put(sync_out);
 561                 }
 562                 return;
 563         }
 564
 565         /* If multiple semaphores extension is supported */
 566         if (se->out_sync_count) {
 567                 for (i = 0; i < se->out_sync_count; i++) {
 568                         drm_syncobj_replace_fence(se->out_syncs[i].syncobj,
 569                                                   done_fence);
 570                         drm_syncobj_put(se->out_syncs[i].syncobj);
 571                 }
 572                 kvfree(se->out_syncs);
 573         }
 574 }
 575
 576 static void
 577 v3d_put_multisync_post_deps(struct v3d_submit_ext *se)
 578 {
 579         unsigned int i;
 580
 581         if (!(se && se->out_sync_count))
 582                 return;
 583
 584         for (i = 0; i < se->out_sync_count; i++)
 585                 drm_syncobj_put(se->out_syncs[i].syncobj);
 586         kvfree(se->out_syncs);
 587 }
 588
 589 static int
 590 v3d_get_multisync_post_deps(struct drm_file *file_priv,
 591                             struct v3d_submit_ext *se,
 592                             u32 count, u64 handles)
 593 {
 594         struct drm_v3d_sem __user *post_deps;
 595         int i, ret;
 596
 597         if (!count)
 598                 return 0;
 599
 600         se->out_syncs = (struct v3d_submit_outsync *)
 601                         kvmalloc_array(count,
 602                                        sizeof(struct v3d_submit_outsync),
 603                                        GFP_KERNEL);
 604         if (!se->out_syncs)
 605                 return -ENOMEM;
 606
 607         post_deps = u64_to_user_ptr(handles);
 608
 609         for (i = 0; i < count; i++) {
 610                 struct drm_v3d_sem out;
 611
 612                 if (copy_from_user(&out, post_deps++, sizeof(out))) {
 613                         ret = -EFAULT;
 614                         DRM_DEBUG("Failed to copy post dep handles\n");
 615                         goto fail;
 616                 }
 617
 618                 se->out_syncs[i].syncobj = drm_syncobj_find(file_priv,
 619                                                             out.handle);
 620                 if (!se->out_syncs[i].syncobj) {
 621                         ret = -EINVAL;
 622                         goto fail;
 623                 }
 624         }
 625         se->out_sync_count = count;
 626
 627         return 0;
 628
 629 fail:
 630         for (i--; i >= 0; i--)
 631                 drm_syncobj_put(se->out_syncs[i].syncobj);
 632         kvfree(se->out_syncs);
 633
 634         return ret;
 635 }
 636
 637 /* Get data for multiple binary semaphores synchronization. Parse syncobj
 638  * to be signaled when job completes (out_sync).
 639  */
 640 static int
 641 v3d_get_multisync_submit_deps(struct drm_file *file_priv,
 642                               struct drm_v3d_extension __user *ext,
 643                               void *data)
 644 {
 645         struct drm_v3d_multi_sync multisync;
 646         struct v3d_submit_ext *se = data;
 647         int ret;
 648
 649         if (copy_from_user(&multisync, ext, sizeof(multisync)))
 650                 return -EFAULT;
 651
 652         if (multisync.pad)
 653                 return -EINVAL;
 654
 655         ret = v3d_get_multisync_post_deps(file_priv, data, multisync.out_sync_count,
 656                                           multisync.out_syncs);
 657         if (ret)
 658                 return ret;
 659
 660         se->in_sync_count = multisync.in_sync_count;
 661         se->in_syncs = multisync.in_syncs;
 662         se->flags |= DRM_V3D_EXT_ID_MULTI_SYNC;
 663         se->wait_stage = multisync.wait_stage;
 664
 665         return 0;
 666 }
 667
 668 /* Whenever userspace sets ioctl extensions, v3d_get_extensions parses data
 669  * according to the extension id (name).
 670  */
 671 static int
 672 v3d_get_extensions(struct drm_file *file_priv,
 673                    u64 ext_handles,
 674                    void *data)
 675 {
 676         struct drm_v3d_extension __user *user_ext;
 677         int ret;
 678
 679         user_ext = u64_to_user_ptr(ext_handles);
 680         while (user_ext) {
 681                 struct drm_v3d_extension ext;
 682
 683                 if (copy_from_user(&ext, user_ext, sizeof(ext))) {
 684                         DRM_DEBUG("Failed to copy submit extension\n");
 685                         return -EFAULT;
 686                 }
 687
 688                 switch (ext.id) {
 689                 case DRM_V3D_EXT_ID_MULTI_SYNC:
 690                         ret = v3d_get_multisync_submit_deps(file_priv, user_ext, data);
 691                         if (ret)
 692                                 return ret;
 693                         break;
 694                 default:
 695                         DRM_DEBUG_DRIVER("Unknown extension id: %d\n", ext.id);
 696                         return -EINVAL;
 697                 }
 698
 699                 user_ext = u64_to_user_ptr(ext.next);
 700         }
 701
 702         return 0;
 703 }
 704
 705 /**
 706  * v3d_submit_cl_ioctl() - Submits a job (frame) to the V3D.
 707  * @dev: DRM device
 708  * @data: ioctl argument
 709  * @file_priv: DRM file for this fd
 710  *
 711  * This is the main entrypoint for userspace to submit a 3D frame to
 712  * the GPU.  Userspace provides the binner command list (if
 713  * applicable), and the kernel sets up the render command list to draw
 714  * to the framebuffer described in the ioctl, using the command lists
 715  * that the 3D engine's binner will produce.
 716  */
 717 int
 718 v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
 719                     struct drm_file *file_priv)
 720 {
 721         struct v3d_dev *v3d = to_v3d_dev(dev);
 722         struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
 723         struct drm_v3d_submit_cl *args = data;
 724         struct v3d_submit_ext se = {0};
 725         struct v3d_bin_job *bin = NULL;
 726         struct v3d_render_job *render = NULL;
 727         struct v3d_job *clean_job = NULL;
 728         struct v3d_job *last_job;
 729         struct ww_acquire_ctx acquire_ctx;
 730         int ret = 0;
 731
 732         trace_v3d_submit_cl_ioctl(&v3d->drm, args->rcl_start, args->rcl_end);
 733
 734         if (args->pad)
 735                 return -EINVAL;
 736
 737         if (args->flags &&
 738             args->flags & ~(DRM_V3D_SUBMIT_CL_FLUSH_CACHE |
 739                             DRM_V3D_SUBMIT_EXTENSION)) {
 740                 DRM_INFO("invalid flags: %d\n", args->flags);
 741                 return -EINVAL;
 742         }
 743
 744         if (args->flags & DRM_V3D_SUBMIT_EXTENSION) {
 745                 ret = v3d_get_extensions(file_priv, args->extensions, &se);
 746                 if (ret) {
 747                         DRM_DEBUG("Failed to get extensions.\n");
 748                         return ret;
 749                 }
 750         }
 751
 752         ret = v3d_job_init(v3d, file_priv, (void *)&render, sizeof(*render),
 753                            v3d_render_job_free, args->in_sync_rcl, &se, V3D_RENDER);
 754         if (ret)
 755                 goto fail;
 756
 757         render->start = args->rcl_start;
 758         render->end = args->rcl_end;
 759         INIT_LIST_HEAD(&render->unref_list);
 760
 761         if (args->bcl_start != args->bcl_end) {
 762                 ret = v3d_job_init(v3d, file_priv, (void *)&bin, sizeof(*bin),
 763                                    v3d_job_free, args->in_sync_bcl, &se, V3D_BIN);
 764                 if (ret)
 765                         goto fail;
 766
 767                 bin->start = args->bcl_start;
 768                 bin->end = args->bcl_end;
 769                 bin->qma = args->qma;
 770                 bin->qms = args->qms;
 771                 bin->qts = args->qts;
 772                 bin->render = render;
 773         }
 774
 775         if (args->flags & DRM_V3D_SUBMIT_CL_FLUSH_CACHE) {
 776                 ret = v3d_job_init(v3d, file_priv, (void *)&clean_job, sizeof(*clean_job),
 777                                    v3d_job_free, 0, NULL, V3D_CACHE_CLEAN);
 778                 if (ret)
 779                         goto fail;
 780
 781                 last_job = clean_job;
 782         } else {
 783                 last_job = &render->base;
 784         }
 785
 786         ret = v3d_lookup_bos(dev, file_priv, last_job,
 787                              args->bo_handles, args->bo_handle_count);
 788         if (ret)
 789                 goto fail;
 790
 791         ret = v3d_lock_bo_reservations(last_job, &acquire_ctx);
 792         if (ret)
 793                 goto fail;
 794
 795         if (args->perfmon_id) {
 796                 render->base.perfmon = v3d_perfmon_find(v3d_priv,
 797                                                         args->perfmon_id);
 798
 799                 if (!render->base.perfmon) {
 800                         ret = -ENOENT;
 801                         goto fail_perfmon;
 802                 }
 803         }
 804
 805         mutex_lock(&v3d->sched_lock);
 806         if (bin) {
 807                 bin->base.perfmon = render->base.perfmon;
 808                 v3d_perfmon_get(bin->base.perfmon);
 809                 v3d_push_job(&bin->base);
 810
 811                 ret = drm_sched_job_add_dependency(&render->base.base,
 812                                                    dma_fence_get(bin->base.done_fence));
 813                 if (ret)
 814                         goto fail_unreserve;
 815         }
 816
 817         v3d_push_job(&render->base);
 818
 819         if (clean_job) {
 820                 struct dma_fence *render_fence =
 821                         dma_fence_get(render->base.done_fence);
 822                 ret = drm_sched_job_add_dependency(&clean_job->base,
 823                                                    render_fence);
 824                 if (ret)
 825                         goto fail_unreserve;
 826                 clean_job->perfmon = render->base.perfmon;
 827                 v3d_perfmon_get(clean_job->perfmon);
 828                 v3d_push_job(clean_job);
 829         }
 830
 831         mutex_unlock(&v3d->sched_lock);
 832
 833         v3d_attach_fences_and_unlock_reservation(file_priv,
 834                                                  last_job,
 835                                                  &acquire_ctx,
 836                                                  args->out_sync,
 837                                                  &se,
 838                                                  last_job->done_fence);
 839
 840         if (bin)
 841                 v3d_job_put(&bin->base);
 842         v3d_job_put(&render->base);
 843         if (clean_job)
 844                 v3d_job_put(clean_job);
 845
 846         return 0;
 847
 848 fail_unreserve:
 849         mutex_unlock(&v3d->sched_lock);
 850 fail_perfmon:
 851         drm_gem_unlock_reservations(last_job->bo,
 852                                     last_job->bo_count, &acquire_ctx);
 853 fail:
 854         v3d_job_cleanup((void *)bin);
 855         v3d_job_cleanup((void *)render);
 856         v3d_job_cleanup(clean_job);
 857         v3d_put_multisync_post_deps(&se);
 858
 859         return ret;
 860 }
 861
 862 /**
 863  * v3d_submit_tfu_ioctl() - Submits a TFU (texture formatting) job to the V3D.
 864  * @dev: DRM device
 865  * @data: ioctl argument
 866  * @file_priv: DRM file for this fd
 867  *
 868  * Userspace provides the register setup for the TFU, which we don't
 869  * need to validate since the TFU is behind the MMU.
 870  */
 871 int
 872 v3d_submit_tfu_ioctl(struct drm_device *dev, void *data,
 873                      struct drm_file *file_priv)
 874 {
 875         struct v3d_dev *v3d = to_v3d_dev(dev);
 876         struct drm_v3d_submit_tfu *args = data;
 877         struct v3d_submit_ext se = {0};
 878         struct v3d_tfu_job *job = NULL;
 879         struct ww_acquire_ctx acquire_ctx;
 880         int ret = 0;
 881
 882         trace_v3d_submit_tfu_ioctl(&v3d->drm, args->iia);
 883
 884         if (args->flags && !(args->flags & DRM_V3D_SUBMIT_EXTENSION)) {
 885                 DRM_DEBUG("invalid flags: %d\n", args->flags);
 886                 return -EINVAL;
 887         }
 888
 889         if (args->flags & DRM_V3D_SUBMIT_EXTENSION) {
 890                 ret = v3d_get_extensions(file_priv, args->extensions, &se);
 891                 if (ret) {
 892                         DRM_DEBUG("Failed to get extensions.\n");
 893                         return ret;
 894                 }
 895         }
 896
 897         ret = v3d_job_init(v3d, file_priv, (void *)&job, sizeof(*job),
 898                            v3d_job_free, args->in_sync, &se, V3D_TFU);
 899         if (ret)
 900                 goto fail;
 901
 902         job->base.bo = kcalloc(ARRAY_SIZE(args->bo_handles),
 903                                sizeof(*job->base.bo), GFP_KERNEL);
 904         if (!job->base.bo) {
 905                 ret = -ENOMEM;
 906                 goto fail;
 907         }
 908
 909         job->args = *args;
 910
 911         spin_lock(&file_priv->table_lock);
 912         for (job->base.bo_count = 0;
 913              job->base.bo_count < ARRAY_SIZE(args->bo_handles);
 914              job->base.bo_count++) {
 915                 struct drm_gem_object *bo;
 916
 917                 if (!args->bo_handles[job->base.bo_count])
 918                         break;
 919
 920                 bo = idr_find(&file_priv->object_idr,
 921                               args->bo_handles[job->base.bo_count]);
 922                 if (!bo) {
 923                         DRM_DEBUG("Failed to look up GEM BO %d: %d\n",
 924                                   job->base.bo_count,
 925                                   args->bo_handles[job->base.bo_count]);
 926                         ret = -ENOENT;
 927                         spin_unlock(&file_priv->table_lock);
 928                         goto fail;
 929                 }
 930                 drm_gem_object_get(bo);
 931                 job->base.bo[job->base.bo_count] = bo;
 932         }
 933         spin_unlock(&file_priv->table_lock);
 934
 935         ret = v3d_lock_bo_reservations(&job->base, &acquire_ctx);
 936         if (ret)
 937                 goto fail;
 938
 939         mutex_lock(&v3d->sched_lock);
 940         v3d_push_job(&job->base);
 941         mutex_unlock(&v3d->sched_lock);
 942
 943         v3d_attach_fences_and_unlock_reservation(file_priv,
 944                                                  &job->base, &acquire_ctx,
 945                                                  args->out_sync,
 946                                                  &se,
 947                                                  job->base.done_fence);
 948
 949         v3d_job_put(&job->base);
 950
 951         return 0;
 952
 953 fail:
 954         v3d_job_cleanup((void *)job);
 955         v3d_put_multisync_post_deps(&se);
 956
 957         return ret;
 958 }
 959
 960 /**
 961  * v3d_submit_csd_ioctl() - Submits a CSD (texture formatting) job to the V3D.
 962  * @dev: DRM device
 963  * @data: ioctl argument
 964  * @file_priv: DRM file for this fd
 965  *
 966  * Userspace provides the register setup for the CSD, which we don't
 967  * need to validate since the CSD is behind the MMU.
 968  */
 969 int
 970 v3d_submit_csd_ioctl(struct drm_device *dev, void *data,
 971                      struct drm_file *file_priv)
 972 {
 973         struct v3d_dev *v3d = to_v3d_dev(dev);
 974         struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
 975         struct drm_v3d_submit_csd *args = data;
 976         struct v3d_submit_ext se = {0};
 977         struct v3d_csd_job *job = NULL;
 978         struct v3d_job *clean_job = NULL;
 979         struct ww_acquire_ctx acquire_ctx;
 980         int ret;
 981
 982         trace_v3d_submit_csd_ioctl(&v3d->drm, args->cfg[5], args->cfg[6]);
 983
 984         if (args->pad)
 985                 return -EINVAL;
 986
 987         if (!v3d_has_csd(v3d)) {
 988                 DRM_DEBUG("Attempting CSD submit on non-CSD hardware\n");
 989                 return -EINVAL;
 990         }
 991
 992         if (args->flags && !(args->flags & DRM_V3D_SUBMIT_EXTENSION)) {
 993                 DRM_INFO("invalid flags: %d\n", args->flags);
 994                 return -EINVAL;
 995         }
 996
 997         if (args->flags & DRM_V3D_SUBMIT_EXTENSION) {
 998                 ret = v3d_get_extensions(file_priv, args->extensions, &se);
 999                 if (ret) {
1000                         DRM_DEBUG("Failed to get extensions.\n");
1001                         return ret;
1002                 }
1003         }
1004
1005         ret = v3d_job_init(v3d, file_priv, (void *)&job, sizeof(*job),
1006                            v3d_job_free, args->in_sync, &se, V3D_CSD);
1007         if (ret)
1008                 goto fail;
1009
1010         ret = v3d_job_init(v3d, file_priv, (void *)&clean_job, sizeof(*clean_job),
1011                            v3d_job_free, 0, NULL, V3D_CACHE_CLEAN);
1012         if (ret)
1013                 goto fail;
1014
1015         job->args = *args;
1016
1017         ret = v3d_lookup_bos(dev, file_priv, clean_job,
1018                              args->bo_handles, args->bo_handle_count);
1019         if (ret)
1020                 goto fail;
1021
1022         ret = v3d_lock_bo_reservations(clean_job, &acquire_ctx);
1023         if (ret)
1024                 goto fail;
1025
1026         if (args->perfmon_id) {
1027                 job->base.perfmon = v3d_perfmon_find(v3d_priv,
1028                                                      args->perfmon_id);
1029                 if (!job->base.perfmon) {
1030                         ret = -ENOENT;
1031                         goto fail_perfmon;
1032                 }
1033         }
1034
1035         mutex_lock(&v3d->sched_lock);
1036         v3d_push_job(&job->base);
1037
1038         ret = drm_sched_job_add_dependency(&clean_job->base,
1039                                            dma_fence_get(job->base.done_fence));
1040         if (ret)
1041                 goto fail_unreserve;
1042
1043         v3d_push_job(clean_job);
1044         mutex_unlock(&v3d->sched_lock);
1045
1046         v3d_attach_fences_and_unlock_reservation(file_priv,
1047                                                  clean_job,
1048                                                  &acquire_ctx,
1049                                                  args->out_sync,
1050                                                  &se,
1051                                                  clean_job->done_fence);
1052
1053         v3d_job_put(&job->base);
1054         v3d_job_put(clean_job);
1055
1056         return 0;
1057
1058 fail_unreserve:
1059         mutex_unlock(&v3d->sched_lock);
1060 fail_perfmon:
1061         drm_gem_unlock_reservations(clean_job->bo, clean_job->bo_count,
1062                                     &acquire_ctx);
1063 fail:
1064         v3d_job_cleanup((void *)job);
1065         v3d_job_cleanup(clean_job);
1066         v3d_put_multisync_post_deps(&se);
1067
1068         return ret;
1069 }
1070
1071 int
1072 v3d_gem_init(struct drm_device *dev)
1073 {
1074         struct v3d_dev *v3d = to_v3d_dev(dev);
1075         u32 pt_size = 4096 * 1024;
1076         int ret, i;
1077
1078         for (i = 0; i < V3D_MAX_QUEUES; i++)
1079                 v3d->queue[i].fence_context = dma_fence_context_alloc(1);
1080
1081         spin_lock_init(&v3d->mm_lock);
1082         spin_lock_init(&v3d->job_lock);
1083         mutex_init(&v3d->bo_lock);
1084         mutex_init(&v3d->reset_lock);
1085         mutex_init(&v3d->sched_lock);
1086         mutex_init(&v3d->cache_clean_lock);
1087
1088         /* Note: We don't allocate address 0.  Various bits of HW
1089          * treat 0 as special, such as the occlusion query counters
1090          * where 0 means "disabled".
1091          */
1092         drm_mm_init(&v3d->mm, 1, pt_size / sizeof(u32) - 1);
1093
1094         v3d->pt = dma_alloc_wc(v3d->drm.dev, pt_size,
1095                                &v3d->pt_paddr,
1096                                GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO);
1097         if (!v3d->pt) {
1098                 drm_mm_takedown(&v3d->mm);
1099                 dev_err(v3d->drm.dev,
1100                         "Failed to allocate page tables. Please ensure you have CMA enabled.\n");
1101                 return -ENOMEM;
1102         }
1103
1104         v3d_init_hw_state(v3d);
1105         v3d_mmu_set_page_table(v3d);
1106
1107         ret = v3d_sched_init(v3d);
1108         if (ret) {
1109                 drm_mm_takedown(&v3d->mm);
1110                 dma_free_coherent(v3d->drm.dev, 4096 * 1024, (void *)v3d->pt,
1111                                   v3d->pt_paddr);
1112         }
1113
1114         return 0;
1115 }
1116
1117 void
1118 v3d_gem_destroy(struct drm_device *dev)
1119 {
1120         struct v3d_dev *v3d = to_v3d_dev(dev);
1121
1122         v3d_sched_fini(v3d);
1123
1124         /* Waiting for jobs to finish would need to be done before
1125          * unregistering V3D.
1126          */
1127         WARN_ON(v3d->bin_job);
1128         WARN_ON(v3d->render_job);
1129
1130         drm_mm_takedown(&v3d->mm);
1131
1132         dma_free_coherent(v3d->drm.dev, 4096 * 1024, (void *)v3d->pt,
1133                           v3d->pt_paddr);
1134 }