forked from Minki/linux
cdec4d3613
This is needed for proper synchronization with display on another DRM
device (pl111 or tinydrm) with buffers produced by vc4 V3D. Fixes the
new igt vc4_dmabuf_poll testcase, and rendering of one of the glmark2
desktop tests on pl111+vc4.
This doesn't yet introduce waits on another device's fences before
vc4's rendering/display, because I don't have testcases for them.
v2: Reuse dma_fence_free(), retitle commit message to clarify that
it's not a full dma-buf fencing implementation yet.
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: http://patchwork.freedesktop.org/patch/msgid/20170412191202.22740-6-eric@anholt.net
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
/*
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* Copyright © 2017 Broadcom
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "vc4_drv.h"
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static const char *vc4_fence_get_driver_name(struct dma_fence *fence)
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{
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return "vc4";
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}
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static const char *vc4_fence_get_timeline_name(struct dma_fence *fence)
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{
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return "vc4-v3d";
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}
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static bool vc4_fence_enable_signaling(struct dma_fence *fence)
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{
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return true;
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}
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static bool vc4_fence_signaled(struct dma_fence *fence)
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{
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struct vc4_fence *f = to_vc4_fence(fence);
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struct vc4_dev *vc4 = to_vc4_dev(f->dev);
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return vc4->finished_seqno >= f->seqno;
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}
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const struct dma_fence_ops vc4_fence_ops = {
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.get_driver_name = vc4_fence_get_driver_name,
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.get_timeline_name = vc4_fence_get_timeline_name,
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.enable_signaling = vc4_fence_enable_signaling,
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.signaled = vc4_fence_signaled,
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.wait = dma_fence_default_wait,
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.release = dma_fence_free,
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};
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