mirror of https://gitee.com/openkylin/linux.git
74 lines
2.1 KiB
C
74 lines
2.1 KiB
C
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/*
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* seqno-fence, using a dma-buf to synchronize fencing
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*
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* Copyright (C) 2012 Texas Instruments
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* Copyright (C) 2012-2014 Canonical Ltd
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* Authors:
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* Rob Clark <robdclark@gmail.com>
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* Maarten Lankhorst <maarten.lankhorst@canonical.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#include <linux/slab.h>
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#include <linux/export.h>
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#include <linux/seqno-fence.h>
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static const char *seqno_fence_get_driver_name(struct fence *fence)
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{
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struct seqno_fence *seqno_fence = to_seqno_fence(fence);
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return seqno_fence->ops->get_driver_name(fence);
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}
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static const char *seqno_fence_get_timeline_name(struct fence *fence)
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{
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struct seqno_fence *seqno_fence = to_seqno_fence(fence);
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return seqno_fence->ops->get_timeline_name(fence);
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}
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static bool seqno_enable_signaling(struct fence *fence)
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{
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struct seqno_fence *seqno_fence = to_seqno_fence(fence);
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return seqno_fence->ops->enable_signaling(fence);
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}
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static bool seqno_signaled(struct fence *fence)
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{
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struct seqno_fence *seqno_fence = to_seqno_fence(fence);
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return seqno_fence->ops->signaled && seqno_fence->ops->signaled(fence);
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}
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static void seqno_release(struct fence *fence)
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{
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struct seqno_fence *f = to_seqno_fence(fence);
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dma_buf_put(f->sync_buf);
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if (f->ops->release)
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f->ops->release(fence);
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else
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fence_free(&f->base);
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}
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static signed long seqno_wait(struct fence *fence, bool intr, signed long timeout)
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{
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struct seqno_fence *f = to_seqno_fence(fence);
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return f->ops->wait(fence, intr, timeout);
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}
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const struct fence_ops seqno_fence_ops = {
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.get_driver_name = seqno_fence_get_driver_name,
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.get_timeline_name = seqno_fence_get_timeline_name,
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.enable_signaling = seqno_enable_signaling,
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.signaled = seqno_signaled,
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.wait = seqno_wait,
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.release = seqno_release,
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};
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EXPORT_SYMBOL(seqno_fence_ops);
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