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         trace_v3d_reset_end(dev);
 130 }
 131
 132 static void
 133 v3d_flush_l3(struct v3d_dev *v3d)
 134 {
 135         if (v3d->ver < 41) {
 136                 u32 gca_ctrl = V3D_GCA_READ(V3D_GCA_CACHE_CTRL);
 137
 138                 V3D_GCA_WRITE(V3D_GCA_CACHE_CTRL,
 139                               gca_ctrl | V3D_GCA_CACHE_CTRL_FLUSH);
 140
 141                 if (v3d->ver < 33) {
 142                         V3D_GCA_WRITE(V3D_GCA_CACHE_CTRL,
 143                                       gca_ctrl & ~V3D_GCA_CACHE_CTRL_FLUSH);
 144                 }
 145         }
 146 }
 147
 148 /* Invalidates the (read-only) L2C cache.  This was the L2 cache for
 149  * uniforms and instructions on V3D 3.2.
 150  */
 151 static void
 152 v3d_invalidate_l2c(struct v3d_dev *v3d, int core)
 153 {
 154         if (v3d->ver > 32)
 155                 return;
 156
 157         V3D_CORE_WRITE(core, V3D_CTL_L2CACTL,
 158                        V3D_L2CACTL_L2CCLR |
 159                        V3D_L2CACTL_L2CENA);
 160 }
 161
 162 /* Invalidates texture L2 cachelines */
 163 static void
 164 v3d_flush_l2t(struct v3d_dev *v3d, int core)
 165 {
 166         /* While there is a busy bit (V3D_L2TCACTL_L2TFLS), we don't
 167          * need to wait for completion before dispatching the job --
 168          * L2T accesses will be stalled until the flush has completed.
 169          * However, we do need to make sure we don't try to trigger a
 170          * new flush while the L2_CLEAN queue is trying to
 171          * synchronously clean after a job.
 172          */
 173         mutex_lock(&v3d->cache_clean_lock);
 174         V3D_CORE_WRITE(core, V3D_CTL_L2TCACTL,
 175                        V3D_L2TCACTL_L2TFLS |
 176                        V3D_SET_FIELD(V3D_L2TCACTL_FLM_FLUSH, V3D_L2TCACTL_FLM));
 177         mutex_unlock(&v3d->cache_clean_lock);
 178 }
 179
 180 /* Cleans texture L1 and L2 cachelines (writing back dirty data).
 181  *
 182  * For cleaning, which happens from the CACHE_CLEAN queue after CSD has
 183  * executed, we need to make sure that the clean is done before
 184  * signaling job completion.  So, we synchronously wait before
 185  * returning, and we make sure that L2 invalidates don't happen in the
 186  * meantime to confuse our are-we-done checks.
 187  */
 188 void
 189 v3d_clean_caches(struct v3d_dev *v3d)
 190 {
 191         struct drm_device *dev = &v3d->drm;
 192         int core = 0;
 193
 194         trace_v3d_cache_clean_begin(dev);
 195
 196         V3D_CORE_WRITE(core, V3D_CTL_L2TCACTL, V3D_L2TCACTL_TMUWCF);
 197         if (wait_for(!(V3D_CORE_READ(core, V3D_CTL_L2TCACTL) &
 198                        V3D_L2TCACTL_L2TFLS), 100)) {
 199                 DRM_ERROR("Timeout waiting for L1T write combiner flush\n");
 200         }
 201
 202         mutex_lock(&v3d->cache_clean_lock);
 203         V3D_CORE_WRITE(core, V3D_CTL_L2TCACTL,
 204                        V3D_L2TCACTL_L2TFLS |
 205                        V3D_SET_FIELD(V3D_L2TCACTL_FLM_CLEAN, V3D_L2TCACTL_FLM));
 206
 207         if (wait_for(!(V3D_CORE_READ(core, V3D_CTL_L2TCACTL) &
 208                        V3D_L2TCACTL_L2TFLS), 100)) {
 209                 DRM_ERROR("Timeout waiting for L2T clean\n");
 210         }
 211
 212         mutex_unlock(&v3d->cache_clean_lock);
 213
 214         trace_v3d_cache_clean_end(dev);
 215 }
 216
 217 /* Invalidates the slice caches.  These are read-only caches. */
 218 static void
 219 v3d_invalidate_slices(struct v3d_dev *v3d, int core)
 220 {
 221         V3D_CORE_WRITE(core, V3D_CTL_SLCACTL,
 222                        V3D_SET_FIELD(0xf, V3D_SLCACTL_TVCCS) |
 223                        V3D_SET_FIELD(0xf, V3D_SLCACTL_TDCCS) |
 224                        V3D_SET_FIELD(0xf, V3D_SLCACTL_UCC) |
 225                        V3D_SET_FIELD(0xf, V3D_SLCACTL_ICC));
 226 }
 227
 228 void
 229 v3d_invalidate_caches(struct v3d_dev *v3d)
 230 {
 231         /* Invalidate the caches from the outside in.  That way if
 232          * another CL's concurrent use of nearby memory were to pull
 233          * an invalidated cacheline back in, we wouldn't leave stale
 234          * data in the inner cache.
 235          */
 236         v3d_flush_l3(v3d);
 237         v3d_invalidate_l2c(v3d, 0);
 238         v3d_flush_l2t(v3d, 0);
 239         v3d_invalidate_slices(v3d, 0);
 240 }
 241
 242 /* Takes the reservation lock on all the BOs being referenced, so that
 243  * at queue submit time we can update the reservations.
 244  *
 245  * We don't lock the RCL the tile alloc/state BOs, or overflow memory
 246  * (all of which are on exec->unref_list).  They're entirely private
 247  * to v3d, so we don't attach dma-buf fences to them.
 248  */
 249 static int
 250 v3d_lock_bo_reservations(struct v3d_job *job,
 251                          struct ww_acquire_ctx *acquire_ctx)
 252 {
 253         int i, ret;
 254
 255         ret = drm_gem_lock_reservations(job->bo, job->bo_count, acquire_ctx);
 256         if (ret)
 257                 return ret;
 258
 259         for (i = 0; i < job->bo_count; i++) {
 260                 ret = drm_gem_fence_array_add_implicit(&job->deps,
 261                                                        job->bo[i], true);
 262                 if (ret) {
 263                         drm_gem_unlock_reservations(job->bo, job->bo_count,
 264                                                     acquire_ctx);
 265                         return ret;
 266                 }
 267         }
 268
 269         return 0;
 270 }
 271
 272 /**
 273  * v3d_lookup_bos() - Sets up job->bo[] with the GEM objects
 274  * referenced by the job.
 275  * @dev: DRM device
 276  * @file_priv: DRM file for this fd
 277  * @job: V3D job being set up
 278  * @bo_handles: GEM handles
 279  * @bo_count: Number of GEM handles passed in
 280  *
 281  * The command validator needs to reference BOs by their index within
 282  * the submitted job's BO list.  This does the validation of the job's
 283  * BO list and reference counting for the lifetime of the job.
 284  *
 285  * Note that this function doesn't need to unreference the BOs on
 286  * failure, because that will happen at v3d_exec_cleanup() time.
 287  */
 288 static int
 289 v3d_lookup_bos(struct drm_device *dev,
 290                struct drm_file *file_priv,
 291                struct v3d_job *job,
 292                u64 bo_handles,
 293                u32 bo_count)
 294 {
 295         u32 *handles;
 296         int ret = 0;
 297         int i;
 298
 299         job->bo_count = bo_count;
 300
 301         if (!job->bo_count) {
 302                 /* See comment on bo_index for why we have to check
 303                  * this.
 304                  */
 305                 DRM_DEBUG("Rendering requires BOs\n");
 306                 return -EINVAL;
 307         }
 308
 309         job->bo = kvmalloc_array(job->bo_count,
 310                                  sizeof(struct drm_gem_cma_object *),
 311                                  GFP_KERNEL | __GFP_ZERO);
 312         if (!job->bo) {
 313                 DRM_DEBUG("Failed to allocate validated BO pointers\n");
 314                 return -ENOMEM;
 315         }
 316
 317         handles = kvmalloc_array(job->bo_count, sizeof(u32), GFP_KERNEL);
 318         if (!handles) {
 319                 ret = -ENOMEM;
 320                 DRM_DEBUG("Failed to allocate incoming GEM handles\n");
 321                 goto fail;
 322         }
 323
 324         if (copy_from_user(handles,
 325                            (void __user *)(uintptr_t)bo_handles,
 326                            job->bo_count * sizeof(u32))) {
 327                 ret = -EFAULT;
 328                 DRM_DEBUG("Failed to copy in GEM handles\n");
 329                 goto fail;
 330         }
 331
 332         spin_lock(&file_priv->table_lock);
 333         for (i = 0; i < job->bo_count; i++) {
 334                 struct drm_gem_object *bo = idr_find(&file_priv->object_idr,
 335                                                      handles[i]);
 336                 if (!bo) {
 337                         DRM_DEBUG("Failed to look up GEM BO %d: %d\n",
 338                                   i, handles[i]);
 339                         ret = -ENOENT;
 340                         spin_unlock(&file_priv->table_lock);
 341                         goto fail;
 342                 }
 343                 drm_gem_object_get(bo);
 344                 job->bo[i] = bo;
 345         }
 346         spin_unlock(&file_priv->table_lock);
 347
 348 fail:
 349         kvfree(handles);
 350         return ret;
 351 }
 352
 353 static void
 354 v3d_job_free(struct kref *ref)
 355 {
 356         struct v3d_job *job = container_of(ref, struct v3d_job, refcount);
 357         unsigned long index;
 358         struct dma_fence *fence;
 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         xa_for_each(&job->deps, index, fence) {
 368                 dma_fence_put(fence);
 369         }
 370         xa_destroy(&job->deps);
 371
 372         dma_fence_put(job->irq_fence);
 373         dma_fence_put(job->done_fence);
 374
 375         pm_runtime_mark_last_busy(job->v3d->drm.dev);
 376         pm_runtime_put_autosuspend(job->v3d->drm.dev);
 377
 378         kfree(job);
 379 }
 380
 381 static void
 382 v3d_render_job_free(struct kref *ref)
 383 {
 384         struct v3d_render_job *job = container_of(ref, struct v3d_render_job,
 385                                                   base.refcount);
 386         struct v3d_bo *bo, *save;
 387
 388         list_for_each_entry_safe(bo, save, &job->unref_list, unref_head) {
 389                 drm_gem_object_put(&bo->base.base);
 390         }
 391
 392         v3d_job_free(ref);
 393 }
 394
 395 void v3d_job_put(struct v3d_job *job)
 396 {
 397         kref_put(&job->refcount, job->free);
 398 }
 399
 400 int
 401 v3d_wait_bo_ioctl(struct drm_device *dev, void *data,
 402                   struct drm_file *file_priv)
 403 {
 404         int ret;
 405         struct drm_v3d_wait_bo *args = data;
 406         ktime_t start = ktime_get();
 407         u64 delta_ns;
 408         unsigned long timeout_jiffies =
 409                 nsecs_to_jiffies_timeout(args->timeout_ns);
 410
 411         if (args->pad != 0)
 412                 return -EINVAL;
 413
 414         ret = drm_gem_dma_resv_wait(file_priv, args->handle,
 415                                               true, timeout_jiffies);
 416
 417         /* Decrement the user's timeout, in case we got interrupted
 418          * such that the ioctl will be restarted.
 419          */
 420         delta_ns = ktime_to_ns(ktime_sub(ktime_get(), start));
 421         if (delta_ns < args->timeout_ns)
 422                 args->timeout_ns -= delta_ns;
 423         else
 424                 args->timeout_ns = 0;
 425
 426         /* Asked to wait beyond the jiffie/scheduler precision? */
 427         if (ret == -ETIME && args->timeout_ns)
 428                 ret = -EAGAIN;
 429
 430         return ret;
 431 }
 432
 433 static int
 434 v3d_job_init(struct v3d_dev *v3d, struct drm_file *file_priv,
 435              struct v3d_job *job, void (*free)(struct kref *ref),
 436              u32 in_sync)
 437 {
 438         struct dma_fence *in_fence = NULL;
 439         int ret;
 440
 441         job->v3d = v3d;
 442         job->free = free;
 443
 444         ret = pm_runtime_get_sync(v3d->drm.dev);
 445         if (ret < 0)
 446                 return ret;
 447
 448         xa_init_flags(&job->deps, XA_FLAGS_ALLOC);
 449
 450         ret = drm_syncobj_find_fence(file_priv, in_sync, 0, 0, &in_fence);
 451         if (ret == -EINVAL)
 452                 goto fail;
 453
 454         ret = drm_gem_fence_array_add(&job->deps, in_fence);
 455         if (ret)
 456                 goto fail;
 457
 458         kref_init(&job->refcount);
 459
 460         return 0;
 461 fail:
 462         xa_destroy(&job->deps);
 463         pm_runtime_put_autosuspend(v3d->drm.dev);
 464         return ret;
 465 }
 466
 467 static int
 468 v3d_push_job(struct v3d_file_priv *v3d_priv,
 469              struct v3d_job *job, enum v3d_queue queue)
 470 {
 471         int ret;
 472
 473         ret = drm_sched_job_init(&job->base, &v3d_priv->sched_entity[queue],
 474                                  v3d_priv);
 475         if (ret)
 476                 return ret;
 477
 478         job->done_fence = dma_fence_get(&job->base.s_fence->finished);
 479
 480         /* put by scheduler job completion */
 481         kref_get(&job->refcount);
 482
 483         drm_sched_entity_push_job(&job->base, &v3d_priv->sched_entity[queue]);
 484
 485         return 0;
 486 }
 487
 488 static void
 489 v3d_attach_fences_and_unlock_reservation(struct drm_file *file_priv,
 490                                          struct v3d_job *job,
 491                                          struct ww_acquire_ctx *acquire_ctx,
 492                                          u32 out_sync,
 493                                          struct dma_fence *done_fence)
 494 {
 495         struct drm_syncobj *sync_out;
 496         int i;
 497
 498         for (i = 0; i < job->bo_count; i++) {
 499                 /* XXX: Use shared fences for read-only objects. */
 500                 dma_resv_add_excl_fence(job->bo[i]->resv,
 501                                                   job->done_fence);
 502         }
 503
 504         drm_gem_unlock_reservations(job->bo, job->bo_count, acquire_ctx);
 505
 506         /* Update the return sync object for the job */
 507         sync_out = drm_syncobj_find(file_priv, out_sync);
 508         if (sync_out) {
 509                 drm_syncobj_replace_fence(sync_out, done_fence);
 510                 drm_syncobj_put(sync_out);
 511         }
 512 }
 513
 514 /**
 515  * v3d_submit_cl_ioctl() - Submits a job (frame) to the V3D.
 516  * @dev: DRM device
 517  * @data: ioctl argument
 518  * @file_priv: DRM file for this fd
 519  *
 520  * This is the main entrypoint for userspace to submit a 3D frame to
 521  * the GPU.  Userspace provides the binner command list (if
 522  * applicable), and the kernel sets up the render command list to draw
 523  * to the framebuffer described in the ioctl, using the command lists
 524  * that the 3D engine's binner will produce.
 525  */
 526 int
 527 v3d_submit_cl_ioctl(struct drm_device *dev, void *data,
 528                     struct drm_file *file_priv)
 529 {
 530         struct v3d_dev *v3d = to_v3d_dev(dev);
 531         struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
 532         struct drm_v3d_submit_cl *args = data;
 533         struct v3d_bin_job *bin = NULL;
 534         struct v3d_render_job *render;
 535         struct v3d_job *clean_job = NULL;
 536         struct v3d_job *last_job;
 537         struct ww_acquire_ctx acquire_ctx;
 538         int ret = 0;
 539
 540         trace_v3d_submit_cl_ioctl(&v3d->drm, args->rcl_start, args->rcl_end);
 541
 542         if (args->flags != 0 &&
 543             args->flags != DRM_V3D_SUBMIT_CL_FLUSH_CACHE) {
 544                 DRM_INFO("invalid flags: %d\n", args->flags);
 545                 return -EINVAL;
 546         }
 547
 548         render = kcalloc(1, sizeof(*render), GFP_KERNEL);
 549         if (!render)
 550                 return -ENOMEM;
 551
 552         render->start = args->rcl_start;
 553         render->end = args->rcl_end;
 554         INIT_LIST_HEAD(&render->unref_list);
 555
 556         ret = v3d_job_init(v3d, file_priv, &render->base,
 557                            v3d_render_job_free, args->in_sync_rcl);
 558         if (ret) {
 559                 kfree(render);
 560                 return ret;
 561         }
 562
 563         if (args->bcl_start != args->bcl_end) {
 564                 bin = kcalloc(1, sizeof(*bin), GFP_KERNEL);
 565                 if (!bin) {
 566                         v3d_job_put(&render->base);
 567                         return -ENOMEM;
 568                 }
 569
 570                 ret = v3d_job_init(v3d, file_priv, &bin->base,
 571                                    v3d_job_free, args->in_sync_bcl);
 572                 if (ret) {
 573                         v3d_job_put(&render->base);
 574                         kfree(bin);
 575                         return ret;
 576                 }
 577
 578                 bin->start = args->bcl_start;
 579                 bin->end = args->bcl_end;
 580                 bin->qma = args->qma;
 581                 bin->qms = args->qms;
 582                 bin->qts = args->qts;
 583                 bin->render = render;
 584         }
 585
 586         if (args->flags & DRM_V3D_SUBMIT_CL_FLUSH_CACHE) {
 587                 clean_job = kcalloc(1, sizeof(*clean_job), GFP_KERNEL);
 588                 if (!clean_job) {
 589                         ret = -ENOMEM;
 590                         goto fail;
 591                 }
 592
 593                 ret = v3d_job_init(v3d, file_priv, clean_job, v3d_job_free, 0);
 594                 if (ret) {
 595                         kfree(clean_job);
 596                         clean_job = NULL;
 597                         goto fail;
 598                 }
 599
 600                 last_job = clean_job;
 601         } else {
 602                 last_job = &render->base;
 603         }
 604
 605         ret = v3d_lookup_bos(dev, file_priv, last_job,
 606                              args->bo_handles, args->bo_handle_count);
 607         if (ret)
 608                 goto fail;
 609
 610         ret = v3d_lock_bo_reservations(last_job, &acquire_ctx);
 611         if (ret)
 612                 goto fail;
 613
 614         mutex_lock(&v3d->sched_lock);
 615         if (bin) {
 616                 ret = v3d_push_job(v3d_priv, &bin->base, V3D_BIN);
 617                 if (ret)
 618                         goto fail_unreserve;
 619
 620                 ret = drm_gem_fence_array_add(&render->base.deps,
 621                                               dma_fence_get(bin->base.done_fence));
 622                 if (ret)
 623                         goto fail_unreserve;
 624         }
 625
 626         ret = v3d_push_job(v3d_priv, &render->base, V3D_RENDER);
 627         if (ret)
 628                 goto fail_unreserve;
 629
 630         if (clean_job) {
 631                 struct dma_fence *render_fence =
 632                         dma_fence_get(render->base.done_fence);
 633                 ret = drm_gem_fence_array_add(&clean_job->deps, render_fence);
 634                 if (ret)
 635                         goto fail_unreserve;
 636                 ret = v3d_push_job(v3d_priv, clean_job, V3D_CACHE_CLEAN);
 637                 if (ret)
 638                         goto fail_unreserve;
 639         }
 640
 641         mutex_unlock(&v3d->sched_lock);
 642
 643         v3d_attach_fences_and_unlock_reservation(file_priv,
 644                                                  last_job,
 645                                                  &acquire_ctx,
 646                                                  args->out_sync,
 647                                                  last_job->done_fence);
 648
 649         if (bin)
 650                 v3d_job_put(&bin->base);
 651         v3d_job_put(&render->base);
 652         if (clean_job)
 653                 v3d_job_put(clean_job);
 654
 655         return 0;
 656
 657 fail_unreserve:
 658         mutex_unlock(&v3d->sched_lock);
 659         drm_gem_unlock_reservations(last_job->bo,
 660                                     last_job->bo_count, &acquire_ctx);
 661 fail:
 662         if (bin)
 663                 v3d_job_put(&bin->base);
 664         v3d_job_put(&render->base);
 665         if (clean_job)
 666                 v3d_job_put(clean_job);
 667
 668         return ret;
 669 }
 670
 671 /**
 672  * v3d_submit_tfu_ioctl() - Submits a TFU (texture formatting) job to the V3D.
 673  * @dev: DRM device
 674  * @data: ioctl argument
 675  * @file_priv: DRM file for this fd
 676  *
 677  * Userspace provides the register setup for the TFU, which we don't
 678  * need to validate since the TFU is behind the MMU.
 679  */
 680 int
 681 v3d_submit_tfu_ioctl(struct drm_device *dev, void *data,
 682                      struct drm_file *file_priv)
 683 {
 684         struct v3d_dev *v3d = to_v3d_dev(dev);
 685         struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
 686         struct drm_v3d_submit_tfu *args = data;
 687         struct v3d_tfu_job *job;
 688         struct ww_acquire_ctx acquire_ctx;
 689         int ret = 0;
 690
 691         trace_v3d_submit_tfu_ioctl(&v3d->drm, args->iia);
 692
 693         job = kcalloc(1, sizeof(*job), GFP_KERNEL);
 694         if (!job)
 695                 return -ENOMEM;
 696
 697         ret = v3d_job_init(v3d, file_priv, &job->base,
 698                            v3d_job_free, args->in_sync);
 699         if (ret) {
 700                 kfree(job);
 701                 return ret;
 702         }
 703
 704         job->base.bo = kcalloc(ARRAY_SIZE(args->bo_handles),
 705                                sizeof(*job->base.bo), GFP_KERNEL);
 706         if (!job->base.bo) {
 707                 v3d_job_put(&job->base);
 708                 return -ENOMEM;
 709         }
 710
 711         job->args = *args;
 712
 713         spin_lock(&file_priv->table_lock);
 714         for (job->base.bo_count = 0;
 715              job->base.bo_count < ARRAY_SIZE(args->bo_handles);
 716              job->base.bo_count++) {
 717                 struct drm_gem_object *bo;
 718
 719                 if (!args->bo_handles[job->base.bo_count])
 720                         break;
 721
 722                 bo = idr_find(&file_priv->object_idr,
 723                               args->bo_handles[job->base.bo_count]);
 724                 if (!bo) {
 725                         DRM_DEBUG("Failed to look up GEM BO %d: %d\n",
 726                                   job->base.bo_count,
 727                                   args->bo_handles[job->base.bo_count]);
 728                         ret = -ENOENT;
 729                         spin_unlock(&file_priv->table_lock);
 730                         goto fail;
 731                 }
 732                 drm_gem_object_get(bo);
 733                 job->base.bo[job->base.bo_count] = bo;
 734         }
 735         spin_unlock(&file_priv->table_lock);
 736
 737         ret = v3d_lock_bo_reservations(&job->base, &acquire_ctx);
 738         if (ret)
 739                 goto fail;
 740
 741         mutex_lock(&v3d->sched_lock);
 742         ret = v3d_push_job(v3d_priv, &job->base, V3D_TFU);
 743         if (ret)
 744                 goto fail_unreserve;
 745         mutex_unlock(&v3d->sched_lock);
 746
 747         v3d_attach_fences_and_unlock_reservation(file_priv,
 748                                                  &job->base, &acquire_ctx,
 749                                                  args->out_sync,
 750                                                  job->base.done_fence);
 751
 752         v3d_job_put(&job->base);
 753
 754         return 0;
 755
 756 fail_unreserve:
 757         mutex_unlock(&v3d->sched_lock);
 758         drm_gem_unlock_reservations(job->base.bo, job->base.bo_count,
 759                                     &acquire_ctx);
 760 fail:
 761         v3d_job_put(&job->base);
 762
 763         return ret;
 764 }
 765
 766 /**
 767  * v3d_submit_csd_ioctl() - Submits a CSD (texture formatting) job to the V3D.
 768  * @dev: DRM device
 769  * @data: ioctl argument
 770  * @file_priv: DRM file for this fd
 771  *
 772  * Userspace provides the register setup for the CSD, which we don't
 773  * need to validate since the CSD is behind the MMU.
 774  */
 775 int
 776 v3d_submit_csd_ioctl(struct drm_device *dev, void *data,
 777                      struct drm_file *file_priv)
 778 {
 779         struct v3d_dev *v3d = to_v3d_dev(dev);
 780         struct v3d_file_priv *v3d_priv = file_priv->driver_priv;
 781         struct drm_v3d_submit_csd *args = data;
 782         struct v3d_csd_job *job;
 783         struct v3d_job *clean_job;
 784         struct ww_acquire_ctx acquire_ctx;
 785         int ret;
 786
 787         trace_v3d_submit_csd_ioctl(&v3d->drm, args->cfg[5], args->cfg[6]);
 788
 789         if (!v3d_has_csd(v3d)) {
 790                 DRM_DEBUG("Attempting CSD submit on non-CSD hardware\n");
 791                 return -EINVAL;
 792         }
 793
 794         job = kcalloc(1, sizeof(*job), GFP_KERNEL);
 795         if (!job)
 796                 return -ENOMEM;
 797
 798         ret = v3d_job_init(v3d, file_priv, &job->base,
 799                            v3d_job_free, args->in_sync);
 800         if (ret) {
 801                 kfree(job);
 802                 return ret;
 803         }
 804
 805         clean_job = kcalloc(1, sizeof(*clean_job), GFP_KERNEL);
 806         if (!clean_job) {
 807                 v3d_job_put(&job->base);
 808                 kfree(job);
 809                 return -ENOMEM;
 810         }
 811
 812         ret = v3d_job_init(v3d, file_priv, clean_job, v3d_job_free, 0);
 813         if (ret) {
 814                 v3d_job_put(&job->base);
 815                 kfree(clean_job);
 816                 return ret;
 817         }
 818
 819         job->args = *args;
 820
 821         ret = v3d_lookup_bos(dev, file_priv, clean_job,
 822                              args->bo_handles, args->bo_handle_count);
 823         if (ret)
 824                 goto fail;
 825
 826         ret = v3d_lock_bo_reservations(clean_job, &acquire_ctx);
 827         if (ret)
 828                 goto fail;
 829
 830         mutex_lock(&v3d->sched_lock);
 831         ret = v3d_push_job(v3d_priv, &job->base, V3D_CSD);
 832         if (ret)
 833                 goto fail_unreserve;
 834
 835         ret = drm_gem_fence_array_add(&clean_job->deps,
 836                                       dma_fence_get(job->base.done_fence));
 837         if (ret)
 838                 goto fail_unreserve;
 839
 840         ret = v3d_push_job(v3d_priv, clean_job, V3D_CACHE_CLEAN);
 841         if (ret)
 842                 goto fail_unreserve;
 843         mutex_unlock(&v3d->sched_lock);
 844
 845         v3d_attach_fences_and_unlock_reservation(file_priv,
 846                                                  clean_job,
 847                                                  &acquire_ctx,
 848                                                  args->out_sync,
 849                                                  clean_job->done_fence);
 850
 851         v3d_job_put(&job->base);
 852         v3d_job_put(clean_job);
 853
 854         return 0;
 855
 856 fail_unreserve:
 857         mutex_unlock(&v3d->sched_lock);
 858         drm_gem_unlock_reservations(clean_job->bo, clean_job->bo_count,
 859                                     &acquire_ctx);
 860 fail:
 861         v3d_job_put(&job->base);
 862         v3d_job_put(clean_job);
 863
 864         return ret;
 865 }
 866
 867 int
 868 v3d_gem_init(struct drm_device *dev)
 869 {
 870         struct v3d_dev *v3d = to_v3d_dev(dev);
 871         u32 pt_size = 4096 * 1024;
 872         int ret, i;
 873
 874         for (i = 0; i < V3D_MAX_QUEUES; i++)
 875                 v3d->queue[i].fence_context = dma_fence_context_alloc(1);
 876
 877         spin_lock_init(&v3d->mm_lock);
 878         spin_lock_init(&v3d->job_lock);
 879         mutex_init(&v3d->bo_lock);
 880         mutex_init(&v3d->reset_lock);
 881         mutex_init(&v3d->sched_lock);
 882         mutex_init(&v3d->cache_clean_lock);
 883
 884         /* Note: We don't allocate address 0.  Various bits of HW
 885          * treat 0 as special, such as the occlusion query counters
 886          * where 0 means "disabled".
 887          */
 888         drm_mm_init(&v3d->mm, 1, pt_size / sizeof(u32) - 1);
 889
 890         v3d->pt = dma_alloc_wc(v3d->drm.dev, pt_size,
 891                                &v3d->pt_paddr,
 892                                GFP_KERNEL | __GFP_NOWARN | __GFP_ZERO);
 893         if (!v3d->pt) {
 894                 drm_mm_takedown(&v3d->mm);
 895                 dev_err(v3d->drm.dev,
 896                         "Failed to allocate page tables. "
 897                         "Please ensure you have CMA enabled.\n");
 898                 return -ENOMEM;
 899         }
 900
 901         v3d_init_hw_state(v3d);
 902         v3d_mmu_set_page_table(v3d);
 903
 904         ret = v3d_sched_init(v3d);
 905         if (ret) {
 906                 drm_mm_takedown(&v3d->mm);
 907                 dma_free_coherent(v3d->drm.dev, 4096 * 1024, (void *)v3d->pt,
 908                                   v3d->pt_paddr);
 909         }
 910
 911         return 0;
 912 }
 913
 914 void
 915 v3d_gem_destroy(struct drm_device *dev)
 916 {
 917         struct v3d_dev *v3d = to_v3d_dev(dev);
 918
 919         v3d_sched_fini(v3d);
 920
 921         /* Waiting for jobs to finish would need to be done before
 922          * unregistering V3D.
 923          */
 924         WARN_ON(v3d->bin_job);
 925         WARN_ON(v3d->render_job);
 926
 927         drm_mm_takedown(&v3d->mm);
 928
 929         dma_free_coherent(v3d->drm.dev, 4096 * 1024, (void *)v3d->pt,
 930                           v3d->pt_paddr);
 931 }