1 /* 2 * Copyright 2012 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * 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 OR 20 * 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 32 int 33 nv10_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 45 static int 46 nv10_fence_sync(struct nouveau_fence *fence, 47 struct nouveau_channel *prev, struct nouveau_channel *chan) 48 { 49 return -ENODEV; 50 } 51 52 u32 53 nv10_fence_read(struct nouveau_channel *chan) 54 { 55 return NVIF_RD32(&chan->user, NV06E, REFERENCE); 56 } 57 58 void 59 nv10_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 68 static int 69 nv10_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 84 void 85 nv10_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 96 int 97 nv10_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