From: Thierry Reding <treding@xxxxxxxxxx>
A DMA fence can be composed of multiple fences in an array. Support this
in the Nouveau driver by iteratively synchronizing to each DMA fence in
the array.
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
drivers/gpu/drm/nouveau/nouveau_fence.c | 31 ++++++++++++++++++++++---
1 file changed, 28 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c
index 8530c2684832..c0849e09279c 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fence.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fence.c
@@ -24,6 +24,7 @@
*
*/
+#include <linux/dma-fence-array.h>
#include <linux/ktime.h>
#include <linux/hrtimer.h>
#include <linux/sched/signal.h>
@@ -338,9 +339,9 @@ nouveau_fence_wait(struct nouveau_fence *fence, bool lazy, bool intr)
return 0;
}
-int
-nouveau_fence_sync(struct dma_fence *fence, struct nouveau_channel *chan,
- bool intr)
+static int
+__nouveau_fence_sync(struct dma_fence *fence, struct nouveau_channel *chan,
+ bool intr)
{
struct nouveau_fence_chan *fctx = chan->fence;
struct nouveau_channel *prev = NULL;
@@ -363,6 +364,30 @@ nouveau_fence_sync(struct dma_fence *fence, struct nouveau_channel *chan,
return ret;
}
+int
+nouveau_fence_sync(struct dma_fence *fence, struct nouveau_channel *chan,
+ bool intr)
+{
+ int ret = 0;
+
+ if (dma_fence_is_array(fence)) {
+ struct dma_fence_array *array = to_dma_fence_array(fence);
+ unsigned int i;
+
+ for (i = 0; i < array->num_fences; i++) {
+ struct dma_fence *f = array->fences[i];
+
+ ret = __nouveau_fence_sync(f, chan, intr);
+ if (ret < 0)
+ break;
+ }
+ } else {
+ ret = __nouveau_fence_sync(fence, chan, intr);
+ }
+
+ return ret;
+}
+
struct nouveau_fence *
nouveau_fence_ref(struct nouveau_fence *fence)
{
--
2.28.0
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