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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /drivers/dma-buf/seqno-fence.c | |
parent | Initial commit. (diff) | |
download | linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.tar.xz linux-5d1646d90e1f2cceb9f0828f4b28318cd0ec7744.zip |
Adding upstream version 5.10.209.upstream/5.10.209
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | drivers/dma-buf/seqno-fence.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/drivers/dma-buf/seqno-fence.c b/drivers/dma-buf/seqno-fence.c new file mode 100644 index 000000000..bfe14e94c --- /dev/null +++ b/drivers/dma-buf/seqno-fence.c @@ -0,0 +1,71 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * seqno-fence, using a dma-buf to synchronize fencing + * + * Copyright (C) 2012 Texas Instruments + * Copyright (C) 2012-2014 Canonical Ltd + * Authors: + * Rob Clark <robdclark@gmail.com> + * Maarten Lankhorst <maarten.lankhorst@canonical.com> + */ + +#include <linux/slab.h> +#include <linux/export.h> +#include <linux/seqno-fence.h> + +static const char *seqno_fence_get_driver_name(struct dma_fence *fence) +{ + struct seqno_fence *seqno_fence = to_seqno_fence(fence); + + return seqno_fence->ops->get_driver_name(fence); +} + +static const char *seqno_fence_get_timeline_name(struct dma_fence *fence) +{ + struct seqno_fence *seqno_fence = to_seqno_fence(fence); + + return seqno_fence->ops->get_timeline_name(fence); +} + +static bool seqno_enable_signaling(struct dma_fence *fence) +{ + struct seqno_fence *seqno_fence = to_seqno_fence(fence); + + return seqno_fence->ops->enable_signaling(fence); +} + +static bool seqno_signaled(struct dma_fence *fence) +{ + struct seqno_fence *seqno_fence = to_seqno_fence(fence); + + return seqno_fence->ops->signaled && seqno_fence->ops->signaled(fence); +} + +static void seqno_release(struct dma_fence *fence) +{ + struct seqno_fence *f = to_seqno_fence(fence); + + dma_buf_put(f->sync_buf); + if (f->ops->release) + f->ops->release(fence); + else + dma_fence_free(&f->base); +} + +static signed long seqno_wait(struct dma_fence *fence, bool intr, + signed long timeout) +{ + struct seqno_fence *f = to_seqno_fence(fence); + + return f->ops->wait(fence, intr, timeout); +} + +const struct dma_fence_ops seqno_fence_ops = { + .get_driver_name = seqno_fence_get_driver_name, + .get_timeline_name = seqno_fence_get_timeline_name, + .enable_signaling = seqno_enable_signaling, + .signaled = seqno_signaled, + .wait = seqno_wait, + .release = seqno_release, +}; +EXPORT_SYMBOL(seqno_fence_ops); |