diff options
Diffstat (limited to 'drivers/gpu/drm/i915/i915_gem_timeline.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_gem_timeline.c | 154 |
1 files changed, 0 insertions, 154 deletions
diff --git a/drivers/gpu/drm/i915/i915_gem_timeline.c b/drivers/gpu/drm/i915/i915_gem_timeline.c deleted file mode 100644 index e9fd87604067..000000000000 --- a/drivers/gpu/drm/i915/i915_gem_timeline.c +++ /dev/null @@ -1,154 +0,0 @@ -/* - * Copyright © 2016 Intel Corporation - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS - * IN THE SOFTWARE. - * - */ - -#include "i915_drv.h" -#include "i915_syncmap.h" - -static void __intel_timeline_init(struct intel_timeline *tl, - struct i915_gem_timeline *parent, - u64 context, - struct lock_class_key *lockclass, - const char *lockname) -{ - tl->fence_context = context; - tl->common = parent; - spin_lock_init(&tl->lock); - lockdep_set_class_and_name(&tl->lock, lockclass, lockname); - init_request_active(&tl->last_request, NULL); - INIT_LIST_HEAD(&tl->requests); - i915_syncmap_init(&tl->sync); -} - -static void __intel_timeline_fini(struct intel_timeline *tl) -{ - GEM_BUG_ON(!list_empty(&tl->requests)); - - i915_syncmap_free(&tl->sync); -} - -static int __i915_gem_timeline_init(struct drm_i915_private *i915, - struct i915_gem_timeline *timeline, - const char *name, - struct lock_class_key *lockclass, - const char *lockname) -{ - unsigned int i; - u64 fences; - - lockdep_assert_held(&i915->drm.struct_mutex); - - /* - * Ideally we want a set of engines on a single leaf as we expect - * to mostly be tracking synchronisation between engines. It is not - * a huge issue if this is not the case, but we may want to mitigate - * any page crossing penalties if they become an issue. - */ - BUILD_BUG_ON(KSYNCMAP < I915_NUM_ENGINES); - - timeline->i915 = i915; - timeline->name = kstrdup(name ?: "[kernel]", GFP_KERNEL); - if (!timeline->name) - return -ENOMEM; - - list_add(&timeline->link, &i915->gt.timelines); - - /* Called during early_init before we know how many engines there are */ - fences = dma_fence_context_alloc(ARRAY_SIZE(timeline->engine)); - for (i = 0; i < ARRAY_SIZE(timeline->engine); i++) - __intel_timeline_init(&timeline->engine[i], - timeline, fences++, - lockclass, lockname); - - return 0; -} - -int i915_gem_timeline_init(struct drm_i915_private *i915, - struct i915_gem_timeline *timeline, - const char *name) -{ - static struct lock_class_key class; - - return __i915_gem_timeline_init(i915, timeline, name, - &class, "&timeline->lock"); -} - -int i915_gem_timeline_init__global(struct drm_i915_private *i915) -{ - static struct lock_class_key class; - - return __i915_gem_timeline_init(i915, - &i915->gt.global_timeline, - "[execution]", - &class, "&global_timeline->lock"); -} - -/** - * i915_gem_timelines_park - called when the driver idles - * @i915: the drm_i915_private device - * - * When the driver is completely idle, we know that all of our sync points - * have been signaled and our tracking is then entirely redundant. Any request - * to wait upon an older sync point will be completed instantly as we know - * the fence is signaled and therefore we will not even look them up in the - * sync point map. - */ -void i915_gem_timelines_park(struct drm_i915_private *i915) -{ - struct i915_gem_timeline *timeline; - int i; - - lockdep_assert_held(&i915->drm.struct_mutex); - - list_for_each_entry(timeline, &i915->gt.timelines, link) { - for (i = 0; i < ARRAY_SIZE(timeline->engine); i++) { - struct intel_timeline *tl = &timeline->engine[i]; - - /* - * All known fences are completed so we can scrap - * the current sync point tracking and start afresh, - * any attempt to wait upon a previous sync point - * will be skipped as the fence was signaled. - */ - i915_syncmap_free(&tl->sync); - } - } -} - -void i915_gem_timeline_fini(struct i915_gem_timeline *timeline) -{ - int i; - - lockdep_assert_held(&timeline->i915->drm.struct_mutex); - - for (i = 0; i < ARRAY_SIZE(timeline->engine); i++) - __intel_timeline_fini(&timeline->engine[i]); - - list_del(&timeline->link); - kfree(timeline->name); -} - -#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) -#include "selftests/mock_timeline.c" -#include "selftests/i915_gem_timeline.c" -#endif |