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
nv10_fence_emit(struct nouveau_fence * fence)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
nv10_fence_sync(struct nouveau_fence * fence,struct nouveau_channel * prev,struct nouveau_channel * chan)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
nv10_fence_read(struct nouveau_channel * chan)53 nv10_fence_read(struct nouveau_channel *chan)
54 {
55 return NVIF_RD32(&chan->user, NV06E, REFERENCE);
56 }
57
58 void
nv10_fence_context_del(struct nouveau_channel * chan)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
nv10_fence_context_new(struct nouveau_channel * chan)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
nv10_fence_destroy(struct nouveau_drm * drm)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_ref(NULL, &priv->bo);
92 drm->fence = NULL;
93 kfree(priv);
94 }
95
96 int
nv10_fence_create(struct nouveau_drm * drm)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