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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 | */ | |
4dc28134 | 24 | #include "nouveau_drv.h" |
5e120f6e | 25 | #include "nouveau_dma.h" |
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26 | #include "nouveau_fence.h" |
27 | ||
538b269b | 28 | #include <nvif/if0004.h> |
7aa638cf | 29 | #include <nvif/push006c.h> |
538b269b | 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 | { | |
7aa638cf BS |
42 | struct nvif_push *push = fence->channel->chan.push; |
43 | int ret = PUSH_WAIT(push, 2); | |
5e120f6e | 44 | if (ret == 0) { |
7aa638cf BS |
45 | PUSH_NVSQ(push, NV_SW, 0x0150, fence->base.seqno); |
46 | PUSH_KICK(push); | |
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47 | } |
48 | return ret; | |
49 | } | |
50 | ||
51 | static int | |
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52 | nv04_fence_sync(struct nouveau_fence *fence, |
53 | struct nouveau_channel *prev, struct nouveau_channel *chan) | |
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54 | { |
55 | return -ENODEV; | |
56 | } | |
57 | ||
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58 | static u32 |
59 | nv04_fence_read(struct nouveau_channel *chan) | |
60 | { | |
cd459e77 BS |
61 | struct nv04_nvsw_get_ref_v0 args = {}; |
62 | WARN_ON(nvif_object_mthd(&chan->nvsw, NV04_NVSW_GET_REF, | |
63 | &args, sizeof(args))); | |
64 | return args.ref; | |
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65 | } |
66 | ||
67 | static void | |
e193b1d4 | 68 | nv04_fence_context_del(struct nouveau_channel *chan) |
5e120f6e | 69 | { |
e193b1d4 | 70 | struct nv04_fence_chan *fctx = chan->fence; |
5e120f6e | 71 | nouveau_fence_context_del(&fctx->base); |
e193b1d4 | 72 | chan->fence = NULL; |
15a996bb | 73 | nouveau_fence_context_free(&fctx->base); |
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74 | } |
75 | ||
76 | static int | |
e193b1d4 | 77 | nv04_fence_context_new(struct nouveau_channel *chan) |
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78 | { |
79 | struct nv04_fence_chan *fctx = kzalloc(sizeof(*fctx), GFP_KERNEL); | |
80 | if (fctx) { | |
29ba89b2 | 81 | nouveau_fence_context_new(chan, &fctx->base); |
827520ce BS |
82 | fctx->base.emit = nv04_fence_emit; |
83 | fctx->base.sync = nv04_fence_sync; | |
84 | fctx->base.read = nv04_fence_read; | |
e193b1d4 | 85 | chan->fence = fctx; |
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86 | return 0; |
87 | } | |
88 | return -ENOMEM; | |
89 | } | |
90 | ||
5e120f6e | 91 | static void |
ebb945a9 | 92 | nv04_fence_destroy(struct nouveau_drm *drm) |
5e120f6e | 93 | { |
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94 | struct nv04_fence_priv *priv = drm->fence; |
95 | drm->fence = NULL; | |
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96 | kfree(priv); |
97 | } | |
98 | ||
99 | int | |
ebb945a9 | 100 | nv04_fence_create(struct nouveau_drm *drm) |
5e120f6e | 101 | { |
5e120f6e | 102 | struct nv04_fence_priv *priv; |
5e120f6e | 103 | |
ebb945a9 | 104 | priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL); |
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105 | if (!priv) |
106 | return -ENOMEM; | |
107 | ||
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108 | priv->base.dtor = nv04_fence_destroy; |
109 | priv->base.context_new = nv04_fence_context_new; | |
110 | priv->base.context_del = nv04_fence_context_del; | |
ebb945a9 | 111 | return 0; |
5e120f6e | 112 | } |