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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 | |
23 | */ | |
24 | ||
4dc28134 | 25 | #include "nouveau_drv.h" |
5e120f6e | 26 | #include "nouveau_dma.h" |
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27 | #include "nouveau_fence.h" |
28 | ||
538b269b BS |
29 | #include <nvif/if0004.h> |
30 | ||
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31 | struct nv04_fence_chan { |
32 | struct nouveau_fence_chan base; | |
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33 | }; |
34 | ||
35 | struct nv04_fence_priv { | |
36 | struct nouveau_fence_priv base; | |
37 | }; | |
38 | ||
39 | static int | |
40 | nv04_fence_emit(struct nouveau_fence *fence) | |
41 | { | |
42 | struct nouveau_channel *chan = fence->channel; | |
43 | int ret = RING_SPACE(chan, 2); | |
44 | if (ret == 0) { | |
45 | BEGIN_NV04(chan, NvSubSw, 0x0150, 1); | |
29ba89b2 | 46 | OUT_RING (chan, fence->base.seqno); |
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47 | FIRE_RING (chan); |
48 | } | |
49 | return ret; | |
50 | } | |
51 | ||
52 | static int | |
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53 | nv04_fence_sync(struct nouveau_fence *fence, |
54 | struct nouveau_channel *prev, struct nouveau_channel *chan) | |
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55 | { |
56 | return -ENODEV; | |
57 | } | |
58 | ||
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59 | static u32 |
60 | nv04_fence_read(struct nouveau_channel *chan) | |
61 | { | |
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62 | struct nv04_nvsw_get_ref_v0 args = {}; |
63 | WARN_ON(nvif_object_mthd(&chan->nvsw, NV04_NVSW_GET_REF, | |
64 | &args, sizeof(args))); | |
65 | return args.ref; | |
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66 | } |
67 | ||
68 | static void | |
e193b1d4 | 69 | nv04_fence_context_del(struct nouveau_channel *chan) |
5e120f6e | 70 | { |
e193b1d4 | 71 | struct nv04_fence_chan *fctx = chan->fence; |
5e120f6e | 72 | nouveau_fence_context_del(&fctx->base); |
e193b1d4 | 73 | chan->fence = NULL; |
15a996bb | 74 | nouveau_fence_context_free(&fctx->base); |
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75 | } |
76 | ||
77 | static int | |
e193b1d4 | 78 | nv04_fence_context_new(struct nouveau_channel *chan) |
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79 | { |
80 | struct nv04_fence_chan *fctx = kzalloc(sizeof(*fctx), GFP_KERNEL); | |
81 | if (fctx) { | |
29ba89b2 | 82 | nouveau_fence_context_new(chan, &fctx->base); |
827520ce BS |
83 | fctx->base.emit = nv04_fence_emit; |
84 | fctx->base.sync = nv04_fence_sync; | |
85 | fctx->base.read = nv04_fence_read; | |
e193b1d4 | 86 | chan->fence = fctx; |
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87 | return 0; |
88 | } | |
89 | return -ENOMEM; | |
90 | } | |
91 | ||
5e120f6e | 92 | static void |
ebb945a9 | 93 | nv04_fence_destroy(struct nouveau_drm *drm) |
5e120f6e | 94 | { |
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95 | struct nv04_fence_priv *priv = drm->fence; |
96 | drm->fence = NULL; | |
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97 | kfree(priv); |
98 | } | |
99 | ||
100 | int | |
ebb945a9 | 101 | nv04_fence_create(struct nouveau_drm *drm) |
5e120f6e | 102 | { |
5e120f6e | 103 | struct nv04_fence_priv *priv; |
5e120f6e | 104 | |
ebb945a9 | 105 | priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL); |
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106 | if (!priv) |
107 | return -ENOMEM; | |
108 | ||
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109 | priv->base.dtor = nv04_fence_destroy; |
110 | priv->base.context_new = nv04_fence_context_new; | |
111 | priv->base.context_del = nv04_fence_context_del; | |
29ba89b2 ML |
112 | priv->base.contexts = 15; |
113 | priv->base.context_base = fence_context_alloc(priv->base.contexts); | |
ebb945a9 | 114 | return 0; |
5e120f6e | 115 | } |