1 // SPDX-License-Identifier: GPL-2.0+ 2 /* Copyright (C) 2017-2018 Broadcom */ 3 4 #include "v3d_drv.h" 5 6 struct dma_fence *v3d_fence_create(struct v3d_dev *v3d, enum v3d_queue queue) 7 { 8 struct v3d_fence *fence; 9 10 fence = kzalloc(sizeof(*fence), GFP_KERNEL); 11 if (!fence) 12 return ERR_PTR(-ENOMEM); 13 14 fence->dev = &v3d->drm; 15 fence->queue = queue; 16 fence->seqno = ++v3d->queue[queue].emit_seqno; 17 dma_fence_init(&fence->base, &v3d_fence_ops, &v3d->job_lock, 18 v3d->queue[queue].fence_context, fence->seqno); 19 20 return &fence->base; 21 } 22 23 static const char *v3d_fence_get_driver_name(struct dma_fence *fence) 24 { 25 return "v3d"; 26 } 27 28 static const char *v3d_fence_get_timeline_name(struct dma_fence *fence) 29 { 30 struct v3d_fence *f = to_v3d_fence(fence); 31 32 if (f->queue == V3D_BIN) 33 return "v3d-bin"; 34 else 35 return "v3d-render"; 36 } 37 38 static bool v3d_fence_enable_signaling(struct dma_fence *fence) 39 { 40 return true; 41 } 42 43 static bool v3d_fence_signaled(struct dma_fence *fence) 44 { 45 struct v3d_fence *f = to_v3d_fence(fence); 46 struct v3d_dev *v3d = to_v3d_dev(f->dev); 47 48 return v3d->queue[f->queue].finished_seqno >= f->seqno; 49 } 50 51 const struct dma_fence_ops v3d_fence_ops = { 52 .get_driver_name = v3d_fence_get_driver_name, 53 .get_timeline_name = v3d_fence_get_timeline_name, 54 .enable_signaling = v3d_fence_enable_signaling, 55 .signaled = v3d_fence_signaled, 56 .wait = dma_fence_default_wait, 57 .release = dma_fence_free, 58 }; 59