drm: move amd_gpu_scheduler into common location

This moves and renames the AMDGPU scheduler to a common location in DRM
in order to facilitate re-use by other drivers. This is mostly a straight
forward rename with no code changes.

One notable exception is the function to_drm_sched_fence(), which is no
longer a inline header function to avoid the need to export the
drm_sched_fence_ops_scheduled and drm_sched_fence_ops_finished structures.

Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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,
-};