mirror of
https://github.com/physwizz/a155-U-u1.git
synced 2024-11-19 13:27:49 +00:00
72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
// 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);
|