enable more of the syncobj code

avoids unimplemented function warnings when running Mesa iris driver

1 files changed, 33 insertions, 0 deletions

diff --git a/sys/dev/pci/drm/include/linux/dma-fence-chain.h b/sys/dev/pci/drm/include/linux/dma-fence-chain.h
index 8d1ac5d5337..87d6043d71b 100644
--- a/sys/dev/pci/drm/include/linux/dma-fence-chain.h
+++ b/sys/dev/pci/drm/include/linux/dma-fence-chain.h
@@ -3,7 +3,40 @@
 #ifndef _LINUX_DMA_FENCE_CHAIN_H
 #define _LINUX_DMA_FENCE_CHAIN_H
 
+#include <linux/dma-fence.h>
+
 struct dma_fence_chain {
+	struct dma_fence base;
+	struct dma_fence *fence;
+	struct dma_fence *prev;
+	uint64_t prev_seqno;
 };
 
+static inline int
+dma_fence_chain_find_seqno(struct dma_fence **df, uint64_t seqno)
+{
+	if (seqno == 0)
+		return 0;
+	STUB();
+	return -ENOSYS;
+}
+
+static inline struct dma_fence_chain *
+to_dma_fence_chain(struct dma_fence *fence)
+{
+	STUB();
+	return NULL;
+}
+
+#define dma_fence_chain_for_each(a, b)
+
+static inline void
+dma_fence_chain_init(struct dma_fence_chain *chain, struct dma_fence *prev,
+    struct dma_fence *fence, uint64_t seqno)
+{
+	chain->fence = fence;
+	chain->prev = prev;
+	chain->prev_seqno = 0;
+}
+
 #endif