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diff --git a/drivers/gpu/host1x/fence.c b/drivers/gpu/host1x/fence.c new file mode 100644 index 000000000000..2b0bb97f053f --- /dev/null +++ b/drivers/gpu/host1x/fence.c @@ -0,0 +1,184 @@ +// SPDX-License-Identifier: GPL-2.0-only +/*
- Syncpoint dma_fence implementation
- Copyright (c) 2020, NVIDIA Corporation.
- */
+#include <linux/dma-fence.h> +#include <linux/file.h> +#include <linux/fs.h> +#include <linux/slab.h> +#include <linux/sync_file.h>
Stale headers
+#include "fence.h" +#include "intr.h" +#include "syncpt.h"
+DEFINE_SPINLOCK(lock);
static
...
+static bool host1x_syncpt_fence_enable_signaling(struct dma_fence *f) +{
- struct host1x_syncpt_fence *sf = to_host1x_fence(f);
- int err;
- if (host1x_syncpt_is_expired(sf->sp, sf->threshold))
return false;- dma_fence_get(f);
- /*
* The dma_fence framework requires the fence driver to keep a* reference to any fences for which 'enable_signaling' has been* called (and that have not been signalled).** We provide a userspace API to create arbitrary syncpoint fences,* so we cannot normally guarantee that all fences get signalled.* As such, setup a timeout, so that long-lasting fences will get* reaped eventually.*/- schedule_delayed_work(&sf->timeout_work, msecs_to_jiffies(30000));
I don't see this API. Please always remove all dead code, make patches minimal and functional.
...> +int host1x_fence_extract(struct dma_fence *fence, u32 *id, u32 *threshold)
+{
- struct host1x_syncpt_fence *f;
- if (fence->ops != &host1x_syncpt_fence_ops)
return -EINVAL;- f = container_of(fence, struct host1x_syncpt_fence, base);
- *id = f->sp->id;
- *threshold = f->threshold;
- return 0;
+} +EXPORT_SYMBOL(host1x_fence_extract);
dead code