drm/v3d/v3d_fence.c

0001 // SPDX-License-Identifier: GPL-2.0+
0002 /* Copyright (C) 2017-2018 Broadcom */
0003
0004 #include "v3d_drv.h"
0005
0006 struct dma_fence *v3d_fence_create(struct v3d_dev *v3d, enum v3d_queue queue)
0007 {
0008     struct v3d_fence *fence;
0009
0010     fence = kzalloc(sizeof(*fence), GFP_KERNEL);
0011     if (!fence)
0012         return ERR_PTR(-ENOMEM);
0013
0014     fence->dev = &v3d->drm;
0015     fence->queue = queue;
0016     fence->seqno = ++v3d->queue[queue].emit_seqno;
0017     dma_fence_init(&fence->base, &v3d_fence_ops, &v3d->job_lock,
0018                v3d->queue[queue].fence_context, fence->seqno);
0019
0020     return &fence->base;
0021 }
0022
0023 static const char *v3d_fence_get_driver_name(struct dma_fence *fence)
0024 {
0025     return "v3d";
0026 }
0027
0028 static const char *v3d_fence_get_timeline_name(struct dma_fence *fence)
0029 {
0030     struct v3d_fence *f = to_v3d_fence(fence);
0031
0032     switch (f->queue) {
0033     case V3D_BIN:
0034         return "v3d-bin";
0035     case V3D_RENDER:
0036         return "v3d-render";
0037     case V3D_TFU:
0038         return "v3d-tfu";
0039     case V3D_CSD:
0040         return "v3d-csd";
0041     default:
0042         return NULL;
0043     }
0044 }
0045
0046 const struct dma_fence_ops v3d_fence_ops = {
0047     .get_driver_name = v3d_fence_get_driver_name,
0048     .get_timeline_name = v3d_fence_get_timeline_name,
0049 };