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Commit d02836b4 authored by Ben Skeggs's avatar Ben Skeggs
Browse files

drm/nv84-nvc0: explicitly map semaphore buffer into channel vm 



Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
parent ce163f69

drivers/gpu/drm/nouveau/nouveau_drv.h

+1 −0
Original line number Diff line number Diff line
@@ -240,6 +240,7 @@ struct nouveau_channel { 
		uint32_t sequence;

		uint32_t sequence_ack;

		atomic_t last_sequence_irq;

		struct nouveau_vma vma;

	} fence;



	/* DMA push buffer */

drivers/gpu/drm/nouveau/nouveau_fence.c

+13 −16
Original line number Diff line number Diff line
@@ -336,6 +336,7 @@ semaphore_acquire(struct nouveau_channel *chan, struct nouveau_semaphore *sema) 
{

	struct drm_nouveau_private *dev_priv = chan->dev->dev_private;

	struct nouveau_fence *fence = NULL;

	u64 offset = chan->fence.vma.offset + sema->mem->start;

	int ret;



	if (dev_priv->chipset < 0x84) {
@@ -345,13 +346,10 @@ semaphore_acquire(struct nouveau_channel *chan, struct nouveau_semaphore *sema) 


		BEGIN_RING(chan, NvSubSw, NV_SW_DMA_SEMAPHORE, 3);

		OUT_RING  (chan, NvSema);

		OUT_RING  (chan, sema->mem->start);

		OUT_RING  (chan, offset);

		OUT_RING  (chan, 1);

	} else

	if (dev_priv->chipset < 0xc0) {

		struct nouveau_vma *vma = &dev_priv->fence.bo->vma;

		u64 offset = vma->offset + sema->mem->start;



		ret = RING_SPACE(chan, 7);

		if (ret)

			return ret;
@@ -364,9 +362,6 @@ semaphore_acquire(struct nouveau_channel *chan, struct nouveau_semaphore *sema) 
		OUT_RING  (chan, 1);

		OUT_RING  (chan, 1); /* ACQUIRE_EQ */

	} else {

		struct nouveau_vma *vma = &dev_priv->fence.bo->vma;

		u64 offset = vma->offset + sema->mem->start;



		ret = RING_SPACE(chan, 5);

		if (ret)

			return ret;
@@ -394,6 +389,7 @@ semaphore_release(struct nouveau_channel *chan, struct nouveau_semaphore *sema) 
{

	struct drm_nouveau_private *dev_priv = chan->dev->dev_private;

	struct nouveau_fence *fence = NULL;

	u64 offset = chan->fence.vma.offset + sema->mem->start;

	int ret;



	if (dev_priv->chipset < 0x84) {
@@ -403,14 +399,11 @@ semaphore_release(struct nouveau_channel *chan, struct nouveau_semaphore *sema) 


		BEGIN_RING(chan, NvSubSw, NV_SW_DMA_SEMAPHORE, 2);

		OUT_RING  (chan, NvSema);

		OUT_RING  (chan, sema->mem->start);

		OUT_RING  (chan, offset);

		BEGIN_RING(chan, NvSubSw, NV_SW_SEMAPHORE_RELEASE, 1);

		OUT_RING  (chan, 1);

	} else

	if (dev_priv->chipset < 0xc0) {

		struct nouveau_vma *vma = &dev_priv->fence.bo->vma;

		u64 offset = vma->offset + sema->mem->start;



		ret = RING_SPACE(chan, 7);

		if (ret)

			return ret;
@@ -423,9 +416,6 @@ semaphore_release(struct nouveau_channel *chan, struct nouveau_semaphore *sema) 
		OUT_RING  (chan, 1);

		OUT_RING  (chan, 2); /* RELEASE */

	} else {

		struct nouveau_vma *vma = &dev_priv->fence.bo->vma;

		u64 offset = vma->offset + sema->mem->start;



		ret = RING_SPACE(chan, 5);

		if (ret)

			return ret;
@@ -540,6 +530,12 @@ nouveau_fence_channel_init(struct nouveau_channel *chan) 
		nouveau_gpuobj_ref(NULL, &obj);

		if (ret)

			return ret;

	} else {

		/* map fence bo into channel's vm */

		ret = nouveau_bo_vma_add(dev_priv->fence.bo, chan->vm,

					 &chan->fence.vma);

		if (ret)

			return ret;

	}



	INIT_LIST_HEAD(&chan->fence.pending);
@@ -551,10 +547,10 @@ nouveau_fence_channel_init(struct nouveau_channel *chan) 
void

nouveau_fence_channel_fini(struct nouveau_channel *chan)

{

	struct drm_nouveau_private *dev_priv = chan->dev->dev_private;

	struct nouveau_fence *tmp, *fence;



	spin_lock(&chan->fence.lock);



	list_for_each_entry_safe(fence, tmp, &chan->fence.pending, entry) {

		fence->signalled = true;

		list_del(&fence->entry);
@@ -564,8 +560,9 @@ nouveau_fence_channel_fini(struct nouveau_channel *chan) 


		kref_put(&fence->refcount, nouveau_fence_del);

	}



	spin_unlock(&chan->fence.lock);



	nouveau_bo_vma_del(dev_priv->fence.bo, &chan->fence.vma);

}



int