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(size: 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_ref(NULL, pnvbo: &priv->bo); |
92 | drm->fence = NULL; |
93 | kfree(objp: 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(size: 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 | |