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nv10_fence.c


products/sources/formale Sprachen/C/Linux/drivers/gpu/drm/nouveau/nv10_fence.c

/* * Copyright 2012 Red Hat Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: Ben Skeggs */ #include "nouveau_drv.h" #include "nouveau_dma.h" #include "nv10_fence.h" #include #include int nv10_fence_emit(struct nouveau_fence *fence) { struct nvif_push *push = &fence->channel->chan.push; int ret = PUSH_WAIT(push, 2); if (ret == 0) { PUSH_MTHD(push, NV06E, SET_REFERENCE, fence->base.seqno); PUSH_KICK(push); } return ret; } static int nv10_fence_sync(struct nouveau_fence *fence, struct nouveau_channel *prev, struct nouveau_channel *chan) { return -ENODEV; } u32 nv10_fence_read(struct nouveau_channel *chan) { return NVIF_RD32(&chan->user, NV06E, REFERENCE); } void nv10_fence_context_del(struct nouveau_channel *chan) { struct nv10_fence_chan *fctx = chan->fence; nouveau_fence_context_del(&fctx->base); nvif_object_dtor(&fctx->sema); chan->fence = NULL; nouveau_fence_context_free(&fctx->base); } static int nv10_fence_context_new(struct nouveau_channel *chan) { struct nv10_fence_chan *fctx; fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL); if (!fctx) return -ENOMEM; nouveau_fence_context_new(chan, &fctx->base); fctx->base.emit = nv10_fence_emit; fctx->base.read = nv10_fence_read; fctx->base.sync = nv10_fence_sync; return 0; } void nv10_fence_destroy(struct nouveau_drm *drm) { struct nv10_fence_priv *priv = drm->fence; nouveau_bo_unpin_del(&priv->bo); drm->fence = NULL; kfree(priv); } int nv10_fence_create(struct nouveau_drm *drm) { struct nv10_fence_priv *priv; priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->base.dtor = nv10_fence_destroy; priv->base.context_new = nv10_fence_context_new; priv->base.context_del = nv10_fence_context_del; spin_lock_init(&priv->lock); return 0; }

                                                                                                                                                                                                                                                                                                                                                                                                     

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