1 | /* $NetBSD: nouveau_nv10_fence.c,v 1.3 2016/04/13 07:57:15 riastradh Exp $ */ |
2 | |
3 | /* |
4 | * Copyright 2012 Red Hat Inc. |
5 | * |
6 | * Permission is hereby granted, free of charge, to any person obtaining a |
7 | * copy of this software and associated documentation files (the "Software"), |
8 | * to deal in the Software without restriction, including without limitation |
9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
10 | * and/or sell copies of the Software, and to permit persons to whom the |
11 | * Software is furnished to do so, subject to the following conditions: |
12 | * |
13 | * The above copyright notice and this permission notice shall be included in |
14 | * all copies or substantial portions of the Software. |
15 | * |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
19 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
20 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
21 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
22 | * OTHER DEALINGS IN THE SOFTWARE. |
23 | * |
24 | * Authors: Ben Skeggs <bskeggs@redhat.com> |
25 | */ |
26 | |
27 | #include <sys/cdefs.h> |
28 | __KERNEL_RCSID(0, "$NetBSD: nouveau_nv10_fence.c,v 1.3 2016/04/13 07:57:15 riastradh Exp $" ); |
29 | |
30 | #include <core/object.h> |
31 | #include <core/class.h> |
32 | |
33 | #include "nouveau_drm.h" |
34 | #include "nouveau_dma.h" |
35 | #include "nv10_fence.h" |
36 | |
37 | int |
38 | nv10_fence_emit(struct nouveau_fence *fence) |
39 | { |
40 | struct nouveau_channel *chan = fence->channel; |
41 | int ret = RING_SPACE(chan, 2); |
42 | if (ret == 0) { |
43 | BEGIN_NV04(chan, 0, NV10_SUBCHAN_REF_CNT, 1); |
44 | OUT_RING (chan, fence->sequence); |
45 | FIRE_RING (chan); |
46 | } |
47 | return ret; |
48 | } |
49 | |
50 | |
51 | static int |
52 | nv10_fence_sync(struct nouveau_fence *fence, |
53 | struct nouveau_channel *prev, struct nouveau_channel *chan) |
54 | { |
55 | return -ENODEV; |
56 | } |
57 | |
58 | u32 |
59 | nv10_fence_read(struct nouveau_channel *chan) |
60 | { |
61 | return nv_ro32(chan->object, 0x0048); |
62 | } |
63 | |
64 | void |
65 | nv10_fence_context_del(struct nouveau_channel *chan) |
66 | { |
67 | struct nv10_fence_chan *fctx = chan->fence; |
68 | nouveau_fence_context_del(&fctx->base); |
69 | chan->fence = NULL; |
70 | kfree(fctx); |
71 | } |
72 | |
73 | static int |
74 | nv10_fence_context_new(struct nouveau_channel *chan) |
75 | { |
76 | struct nv10_fence_chan *fctx; |
77 | |
78 | fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL); |
79 | if (!fctx) |
80 | return -ENOMEM; |
81 | |
82 | nouveau_fence_context_new(&fctx->base); |
83 | fctx->base.emit = nv10_fence_emit; |
84 | fctx->base.read = nv10_fence_read; |
85 | fctx->base.sync = nv10_fence_sync; |
86 | return 0; |
87 | } |
88 | |
89 | void |
90 | nv10_fence_destroy(struct nouveau_drm *drm) |
91 | { |
92 | struct nv10_fence_priv *priv = drm->fence; |
93 | nouveau_bo_unmap(priv->bo); |
94 | if (priv->bo) |
95 | nouveau_bo_unpin(priv->bo); |
96 | nouveau_bo_ref(NULL, &priv->bo); |
97 | drm->fence = NULL; |
98 | spin_lock_destroy(&priv->lock); |
99 | kfree(priv); |
100 | } |
101 | |
102 | int |
103 | nv10_fence_create(struct nouveau_drm *drm) |
104 | { |
105 | struct nv10_fence_priv *priv; |
106 | |
107 | priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL); |
108 | if (!priv) |
109 | return -ENOMEM; |
110 | |
111 | priv->base.dtor = nv10_fence_destroy; |
112 | priv->base.context_new = nv10_fence_context_new; |
113 | priv->base.context_del = nv10_fence_context_del; |
114 | spin_lock_init(&priv->lock); |
115 | return 0; |
116 | } |
117 | |