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path: root/drivers/gpu/drm/nouveau/nouveau_fence.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_fence.c')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_fence.c39
1 files changed, 11 insertions, 28 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c
index faddf53ff9ed..87ac21ec23d2 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fence.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fence.c
@@ -64,13 +64,15 @@ nouveau_fence_update(struct nouveau_channel *chan)
struct nouveau_fence *fence;
uint32_t sequence;
+ spin_lock(&chan->fence.lock);
+
if (USE_REFCNT)
sequence = nvchan_rd32(chan, 0x48);
else
- sequence = chan->fence.last_sequence_irq;
+ sequence = atomic_read(&chan->fence.last_sequence_irq);
if (chan->fence.sequence_ack == sequence)
- return;
+ goto out;
chan->fence.sequence_ack = sequence;
list_for_each_safe(entry, tmp, &chan->fence.pending) {
@@ -84,6 +86,8 @@ nouveau_fence_update(struct nouveau_channel *chan)
if (sequence == chan->fence.sequence_ack)
break;
}
+out:
+ spin_unlock(&chan->fence.lock);
}
int
@@ -119,7 +123,6 @@ nouveau_fence_emit(struct nouveau_fence *fence)
{
struct drm_nouveau_private *dev_priv = fence->channel->dev->dev_private;
struct nouveau_channel *chan = fence->channel;
- unsigned long flags;
int ret;
ret = RING_SPACE(chan, 2);
@@ -127,9 +130,7 @@ nouveau_fence_emit(struct nouveau_fence *fence)
return ret;
if (unlikely(chan->fence.sequence == chan->fence.sequence_ack - 1)) {
- spin_lock_irqsave(&chan->fence.lock, flags);
nouveau_fence_update(chan);
- spin_unlock_irqrestore(&chan->fence.lock, flags);
BUG_ON(chan->fence.sequence ==
chan->fence.sequence_ack - 1);
@@ -138,9 +139,9 @@ nouveau_fence_emit(struct nouveau_fence *fence)
fence->sequence = ++chan->fence.sequence;
kref_get(&fence->refcount);
- spin_lock_irqsave(&chan->fence.lock, flags);
+ spin_lock(&chan->fence.lock);
list_add_tail(&fence->entry, &chan->fence.pending);
- spin_unlock_irqrestore(&chan->fence.lock, flags);
+ spin_unlock(&chan->fence.lock);
BEGIN_RING(chan, NvSubSw, USE_REFCNT ? 0x0050 : 0x0150, 1);
OUT_RING(chan, fence->sequence);
@@ -173,14 +174,11 @@ nouveau_fence_signalled(void *sync_obj, void *sync_arg)
{
struct nouveau_fence *fence = nouveau_fence(sync_obj);
struct nouveau_channel *chan = fence->channel;
- unsigned long flags;
if (fence->signalled)
return true;
- spin_lock_irqsave(&chan->fence.lock, flags);
nouveau_fence_update(chan);
- spin_unlock_irqrestore(&chan->fence.lock, flags);
return fence->signalled;
}
@@ -190,8 +188,6 @@ nouveau_fence_wait(void *sync_obj, void *sync_arg, bool lazy, bool intr)
unsigned long timeout = jiffies + (3 * DRM_HZ);
int ret = 0;
- __set_current_state(intr ? TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE);
-
while (1) {
if (nouveau_fence_signalled(sync_obj, sync_arg))
break;
@@ -201,6 +197,8 @@ nouveau_fence_wait(void *sync_obj, void *sync_arg, bool lazy, bool intr)
break;
}
+ __set_current_state(intr ? TASK_INTERRUPTIBLE
+ : TASK_UNINTERRUPTIBLE);
if (lazy)
schedule_timeout(1);
@@ -221,27 +219,12 @@ nouveau_fence_flush(void *sync_obj, void *sync_arg)
return 0;
}
-void
-nouveau_fence_handler(struct drm_device *dev, int channel)
-{
- struct drm_nouveau_private *dev_priv = dev->dev_private;
- struct nouveau_channel *chan = NULL;
-
- if (channel >= 0 && channel < dev_priv->engine.fifo.channels)
- chan = dev_priv->fifos[channel];
-
- if (chan) {
- spin_lock_irq(&chan->fence.lock);
- nouveau_fence_update(chan);
- spin_unlock_irq(&chan->fence.lock);
- }
-}
-
int
nouveau_fence_init(struct nouveau_channel *chan)
{
INIT_LIST_HEAD(&chan->fence.pending);
spin_lock_init(&chan->fence.lock);
+ atomic_set(&chan->fence.last_sequence_irq, 0);
return 0;
}