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1/*2 * Copyright 2012 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Ben Skeggs <bskeggs@redhat.com>23 */24#include "nouveau_drv.h"25#include "nouveau_dma.h"26#include "nv10_fence.h"27 28#include <nvif/push006c.h>29 30#include <nvhw/class/cl006e.h>31 32int33nv10_fence_emit(struct nouveau_fence *fence)34{35 struct nvif_push *push = &fence->channel->chan.push;36 int ret = PUSH_WAIT(push, 2);37 if (ret == 0) {38 PUSH_MTHD(push, NV06E, SET_REFERENCE, fence->base.seqno);39 PUSH_KICK(push);40 }41 return ret;42}43 44 45static int46nv10_fence_sync(struct nouveau_fence *fence,47 struct nouveau_channel *prev, struct nouveau_channel *chan)48{49 return -ENODEV;50}51 52u3253nv10_fence_read(struct nouveau_channel *chan)54{55 return NVIF_RD32(&chan->user, NV06E, REFERENCE);56}57 58void59nv10_fence_context_del(struct nouveau_channel *chan)60{61 struct nv10_fence_chan *fctx = chan->fence;62 nouveau_fence_context_del(&fctx->base);63 nvif_object_dtor(&fctx->sema);64 chan->fence = NULL;65 nouveau_fence_context_free(&fctx->base);66}67 68static int69nv10_fence_context_new(struct nouveau_channel *chan)70{71 struct nv10_fence_chan *fctx;72 73 fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL);74 if (!fctx)75 return -ENOMEM;76 77 nouveau_fence_context_new(chan, &fctx->base);78 fctx->base.emit = nv10_fence_emit;79 fctx->base.read = nv10_fence_read;80 fctx->base.sync = nv10_fence_sync;81 return 0;82}83 84void85nv10_fence_destroy(struct nouveau_drm *drm)86{87 struct nv10_fence_priv *priv = drm->fence;88 nouveau_bo_unmap(priv->bo);89 if (priv->bo)90 nouveau_bo_unpin(priv->bo);91 nouveau_bo_fini(priv->bo);92 drm->fence = NULL;93 kfree(priv);94}95 96int97nv10_fence_create(struct nouveau_drm *drm)98{99 struct nv10_fence_priv *priv;100 101 priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL);102 if (!priv)103 return -ENOMEM;104 105 priv->base.dtor = nv10_fence_destroy;106 priv->base.context_new = nv10_fence_context_new;107 priv->base.context_del = nv10_fence_context_del;108 spin_lock_init(&priv->lock);109 return 0;110}111