/* * 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> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 as published by * the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. */ #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);