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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 <bskeggs@redhat.com> | |
23 | */ | |
24 | ||
25 | #include <core/object.h> | |
26 | #include <core/class.h> | |
27 | ||
28 | #include "nouveau_drm.h" | |
29 | #include "nouveau_dma.h" | |
30 | #include "nv10_fence.h" | |
31 | ||
32 | int | |
33 | nv17_fence_sync(struct nouveau_fence *fence, | |
34 | struct nouveau_channel *prev, struct nouveau_channel *chan) | |
35 | { | |
36 | struct nv10_fence_priv *priv = chan->drm->fence; | |
37 | u32 value; | |
38 | int ret; | |
39 | ||
40 | if (!mutex_trylock(&prev->cli->mutex)) | |
41 | return -EBUSY; | |
42 | ||
43 | spin_lock(&priv->lock); | |
44 | value = priv->sequence; | |
45 | priv->sequence += 2; | |
46 | spin_unlock(&priv->lock); | |
47 | ||
48 | ret = RING_SPACE(prev, 5); | |
49 | if (!ret) { | |
50 | BEGIN_NV04(prev, 0, NV11_SUBCHAN_DMA_SEMAPHORE, 4); | |
51 | OUT_RING (prev, NvSema); | |
52 | OUT_RING (prev, 0); | |
53 | OUT_RING (prev, value + 0); | |
54 | OUT_RING (prev, value + 1); | |
55 | FIRE_RING (prev); | |
56 | } | |
57 | ||
58 | if (!ret && !(ret = RING_SPACE(chan, 5))) { | |
59 | BEGIN_NV04(chan, 0, NV11_SUBCHAN_DMA_SEMAPHORE, 4); | |
60 | OUT_RING (chan, NvSema); | |
61 | OUT_RING (chan, 0); | |
62 | OUT_RING (chan, value + 1); | |
63 | OUT_RING (chan, value + 2); | |
64 | FIRE_RING (chan); | |
65 | } | |
66 | ||
67 | mutex_unlock(&prev->cli->mutex); | |
68 | return 0; | |
69 | } | |
70 | ||
71 | static int | |
72 | nv17_fence_context_new(struct nouveau_channel *chan) | |
73 | { | |
74 | struct nv10_fence_priv *priv = chan->drm->fence; | |
75 | struct nv10_fence_chan *fctx; | |
76 | struct ttm_mem_reg *mem = &priv->bo->bo.mem; | |
77 | struct nouveau_object *object; | |
78 | u32 start = mem->start * PAGE_SIZE; | |
79 | u32 limit = mem->start + mem->size - 1; | |
80 | int ret = 0; | |
81 | ||
82 | fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL); | |
83 | if (!fctx) | |
84 | return -ENOMEM; | |
85 | ||
86 | nouveau_fence_context_new(&fctx->base); | |
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87 | fctx->base.emit = nv10_fence_emit; |
88 | fctx->base.read = nv10_fence_read; | |
89 | fctx->base.sync = nv17_fence_sync; | |
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90 | |
91 | ret = nouveau_object_new(nv_object(chan->cli), chan->handle, | |
92 | NvSema, 0x0002, | |
93 | &(struct nv_dma_class) { | |
94 | .flags = NV_DMA_TARGET_VRAM | | |
95 | NV_DMA_ACCESS_RDWR, | |
96 | .start = start, | |
97 | .limit = limit, | |
98 | }, sizeof(struct nv_dma_class), | |
99 | &object); | |
100 | if (ret) | |
101 | nv10_fence_context_del(chan); | |
102 | return ret; | |
103 | } | |
104 | ||
105 | void | |
106 | nv17_fence_resume(struct nouveau_drm *drm) | |
107 | { | |
108 | struct nv10_fence_priv *priv = drm->fence; | |
109 | ||
110 | nouveau_bo_wr32(priv->bo, 0, priv->sequence); | |
111 | } | |
112 | ||
113 | int | |
114 | nv17_fence_create(struct nouveau_drm *drm) | |
115 | { | |
116 | struct nv10_fence_priv *priv; | |
117 | int ret = 0; | |
118 | ||
119 | priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL); | |
120 | if (!priv) | |
121 | return -ENOMEM; | |
122 | ||
123 | priv->base.dtor = nv10_fence_destroy; | |
124 | priv->base.resume = nv17_fence_resume; | |
125 | priv->base.context_new = nv17_fence_context_new; | |
126 | priv->base.context_del = nv10_fence_context_del; | |
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127 | spin_lock_init(&priv->lock); |
128 | ||
129 | ret = nouveau_bo_new(drm->dev, 4096, 0x1000, TTM_PL_FLAG_VRAM, | |
130 | 0, 0x0000, NULL, &priv->bo); | |
131 | if (!ret) { | |
132 | ret = nouveau_bo_pin(priv->bo, TTM_PL_FLAG_VRAM); | |
133 | if (!ret) { | |
134 | ret = nouveau_bo_map(priv->bo); | |
135 | if (ret) | |
136 | nouveau_bo_unpin(priv->bo); | |
137 | } | |
138 | if (ret) | |
139 | nouveau_bo_ref(NULL, &priv->bo); | |
140 | } | |
141 | ||
142 | if (ret) { | |
143 | nv10_fence_destroy(drm); | |
144 | return ret; | |
145 | } | |
146 | ||
147 | nouveau_bo_wr32(priv->bo, 0x000, 0x00000000); | |
148 | return ret; | |
149 | } |