drm/vc4/vc4_fence.c

0001 /*
0002  * Copyright © 2017 Broadcom
0003  *
0004  * Permission is hereby granted, free of charge, to any person obtaining a
0005  * copy of this software and associated documentation files (the "Software"),
0006  * to deal in the Software without restriction, including without limitation
0007  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
0008  * and/or sell copies of the Software, and to permit persons to whom the
0009  * Software is furnished to do so, subject to the following conditions:
0010  *
0011  * The above copyright notice and this permission notice (including the next
0012  * paragraph) shall be included in all copies or substantial portions of the
0013  * Software.
0014  *
0015  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0016  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0017  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
0018  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
0019  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
0020  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
0021  * IN THE SOFTWARE.
0022  */
0023
0024 #include "vc4_drv.h"
0025
0026 static const char *vc4_fence_get_driver_name(struct dma_fence *fence)
0027 {
0028     return "vc4";
0029 }
0030
0031 static const char *vc4_fence_get_timeline_name(struct dma_fence *fence)
0032 {
0033     return "vc4-v3d";
0034 }
0035
0036 static bool vc4_fence_signaled(struct dma_fence *fence)
0037 {
0038     struct vc4_fence *f = to_vc4_fence(fence);
0039     struct vc4_dev *vc4 = to_vc4_dev(f->dev);
0040
0041     return vc4->finished_seqno >= f->seqno;
0042 }
0043
0044 const struct dma_fence_ops vc4_fence_ops = {
0045     .get_driver_name = vc4_fence_get_driver_name,
0046     .get_timeline_name = vc4_fence_get_timeline_name,
0047     .signaled = vc4_fence_signaled,
0048 };