diff options
Diffstat (limited to 'drivers/gpu/drm/amd/scheduler/sched_fence.c')
| -rw-r--r-- | drivers/gpu/drm/amd/scheduler/sched_fence.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/drivers/gpu/drm/amd/scheduler/sched_fence.c b/drivers/gpu/drm/amd/scheduler/sched_fence.c deleted file mode 100644 index 33f54d0a5c4f..000000000000 --- a/drivers/gpu/drm/amd/scheduler/sched_fence.c +++ /dev/null @@ -1,173 +0,0 @@ -/* - * Copyright 2015 Advanced Micro Devices, Inc. - * - * 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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 <linux/kthread.h> -#include <linux/wait.h> -#include <linux/sched.h> -#include <drm/drmP.h> -#include "gpu_scheduler.h" - -static struct kmem_cache *sched_fence_slab; - -int amd_sched_fence_slab_init(void) -{ - sched_fence_slab = kmem_cache_create( - "amd_sched_fence", sizeof(struct amd_sched_fence), 0, - SLAB_HWCACHE_ALIGN, NULL); - if (!sched_fence_slab) - return -ENOMEM; - - return 0; -} - -void amd_sched_fence_slab_fini(void) -{ - rcu_barrier(); - kmem_cache_destroy(sched_fence_slab); -} - -struct amd_sched_fence *amd_sched_fence_create(struct amd_sched_entity *entity, - void *owner) -{ - struct amd_sched_fence *fence = NULL; - unsigned seq; - - fence = kmem_cache_zalloc(sched_fence_slab, GFP_KERNEL); - if (fence == NULL) - return NULL; - - fence->owner = owner; - fence->sched = entity->sched; - spin_lock_init(&fence->lock); - - seq = atomic_inc_return(&entity->fence_seq); - dma_fence_init(&fence->scheduled, &amd_sched_fence_ops_scheduled, - &fence->lock, entity->fence_context, seq); - dma_fence_init(&fence->finished, &amd_sched_fence_ops_finished, - &fence->lock, entity->fence_context + 1, seq); - - return fence; -} - -void amd_sched_fence_scheduled(struct amd_sched_fence *fence) -{ - int ret = dma_fence_signal(&fence->scheduled); - - if (!ret) - DMA_FENCE_TRACE(&fence->scheduled, - "signaled from irq context\n"); - else - DMA_FENCE_TRACE(&fence->scheduled, - "was already signaled\n"); -} - -void amd_sched_fence_finished(struct amd_sched_fence *fence) -{ - int ret = dma_fence_signal(&fence->finished); - - if (!ret) - DMA_FENCE_TRACE(&fence->finished, - "signaled from irq context\n"); - else - DMA_FENCE_TRACE(&fence->finished, - "was already signaled\n"); -} - -static const char *amd_sched_fence_get_driver_name(struct dma_fence *fence) -{ - return "amd_sched"; -} - -static const char *amd_sched_fence_get_timeline_name(struct dma_fence *f) -{ - struct amd_sched_fence *fence = to_amd_sched_fence(f); - return (const char *)fence->sched->name; -} - -static bool amd_sched_fence_enable_signaling(struct dma_fence *f) -{ - return true; -} - -/** - * amd_sched_fence_free - free up the fence memory - * - * @rcu: RCU callback head - * - * Free up the fence memory after the RCU grace period. - */ -static void amd_sched_fence_free(struct rcu_head *rcu) -{ - struct dma_fence *f = container_of(rcu, struct dma_fence, rcu); - struct amd_sched_fence *fence = to_amd_sched_fence(f); - - dma_fence_put(fence->parent); - kmem_cache_free(sched_fence_slab, fence); -} - -/** - * amd_sched_fence_release_scheduled - callback that fence can be freed - * - * @fence: fence - * - * This function is called when the reference count becomes zero. - * It just RCU schedules freeing up the fence. - */ -static void amd_sched_fence_release_scheduled(struct dma_fence *f) -{ - struct amd_sched_fence *fence = to_amd_sched_fence(f); - - call_rcu(&fence->finished.rcu, amd_sched_fence_free); -} - -/** - * amd_sched_fence_release_finished - drop extra reference - * - * @f: fence - * - * Drop the extra reference from the scheduled fence to the base fence. - */ -static void amd_sched_fence_release_finished(struct dma_fence *f) -{ - struct amd_sched_fence *fence = to_amd_sched_fence(f); - - dma_fence_put(&fence->scheduled); -} - -const struct dma_fence_ops amd_sched_fence_ops_scheduled = { - .get_driver_name = amd_sched_fence_get_driver_name, - .get_timeline_name = amd_sched_fence_get_timeline_name, - .enable_signaling = amd_sched_fence_enable_signaling, - .signaled = NULL, - .wait = dma_fence_default_wait, - .release = amd_sched_fence_release_scheduled, -}; - -const struct dma_fence_ops amd_sched_fence_ops_finished = { - .get_driver_name = amd_sched_fence_get_driver_name, - .get_timeline_name = amd_sched_fence_get_timeline_name, - .enable_signaling = amd_sched_fence_enable_signaling, - .signaled = NULL, - .wait = dma_fence_default_wait, - .release = amd_sched_fence_release_finished, -}; |