1 | /* $NetBSD: nouveau_nv17_fence.c,v 1.1.1.1 2014/08/06 12:36:23 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_nv17_fence.c,v 1.1.1.1 2014/08/06 12:36:23 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 | nv17_fence_sync(struct nouveau_fence *fence, |
39 | struct nouveau_channel *prev, struct nouveau_channel *chan) |
40 | { |
41 | struct nv10_fence_priv *priv = chan->drm->fence; |
42 | u32 value; |
43 | int ret; |
44 | |
45 | if (!mutex_trylock(&prev->cli->mutex)) |
46 | return -EBUSY; |
47 | |
48 | spin_lock(&priv->lock); |
49 | value = priv->sequence; |
50 | priv->sequence += 2; |
51 | spin_unlock(&priv->lock); |
52 | |
53 | ret = RING_SPACE(prev, 5); |
54 | if (!ret) { |
55 | BEGIN_NV04(prev, 0, NV11_SUBCHAN_DMA_SEMAPHORE, 4); |
56 | OUT_RING (prev, NvSema); |
57 | OUT_RING (prev, 0); |
58 | OUT_RING (prev, value + 0); |
59 | OUT_RING (prev, value + 1); |
60 | FIRE_RING (prev); |
61 | } |
62 | |
63 | if (!ret && !(ret = RING_SPACE(chan, 5))) { |
64 | BEGIN_NV04(chan, 0, NV11_SUBCHAN_DMA_SEMAPHORE, 4); |
65 | OUT_RING (chan, NvSema); |
66 | OUT_RING (chan, 0); |
67 | OUT_RING (chan, value + 1); |
68 | OUT_RING (chan, value + 2); |
69 | FIRE_RING (chan); |
70 | } |
71 | |
72 | mutex_unlock(&prev->cli->mutex); |
73 | return 0; |
74 | } |
75 | |
76 | static int |
77 | nv17_fence_context_new(struct nouveau_channel *chan) |
78 | { |
79 | struct nv10_fence_priv *priv = chan->drm->fence; |
80 | struct nv10_fence_chan *fctx; |
81 | struct ttm_mem_reg *mem = &priv->bo->bo.mem; |
82 | struct nouveau_object *object; |
83 | u32 start = mem->start * PAGE_SIZE; |
84 | u32 limit = start + mem->size - 1; |
85 | int ret = 0; |
86 | |
87 | fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL); |
88 | if (!fctx) |
89 | return -ENOMEM; |
90 | |
91 | nouveau_fence_context_new(&fctx->base); |
92 | fctx->base.emit = nv10_fence_emit; |
93 | fctx->base.read = nv10_fence_read; |
94 | fctx->base.sync = nv17_fence_sync; |
95 | |
96 | ret = nouveau_object_new(nv_object(chan->cli), chan->handle, |
97 | NvSema, 0x0002, |
98 | &(struct nv_dma_class) { |
99 | .flags = NV_DMA_TARGET_VRAM | |
100 | NV_DMA_ACCESS_RDWR, |
101 | .start = start, |
102 | .limit = limit, |
103 | }, sizeof(struct nv_dma_class), |
104 | &object); |
105 | if (ret) |
106 | nv10_fence_context_del(chan); |
107 | return ret; |
108 | } |
109 | |
110 | void |
111 | nv17_fence_resume(struct nouveau_drm *drm) |
112 | { |
113 | struct nv10_fence_priv *priv = drm->fence; |
114 | |
115 | nouveau_bo_wr32(priv->bo, 0, priv->sequence); |
116 | } |
117 | |
118 | int |
119 | nv17_fence_create(struct nouveau_drm *drm) |
120 | { |
121 | struct nv10_fence_priv *priv; |
122 | int ret = 0; |
123 | |
124 | priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL); |
125 | if (!priv) |
126 | return -ENOMEM; |
127 | |
128 | priv->base.dtor = nv10_fence_destroy; |
129 | priv->base.resume = nv17_fence_resume; |
130 | priv->base.context_new = nv17_fence_context_new; |
131 | priv->base.context_del = nv10_fence_context_del; |
132 | spin_lock_init(&priv->lock); |
133 | |
134 | ret = nouveau_bo_new(drm->dev, 4096, 0x1000, TTM_PL_FLAG_VRAM, |
135 | 0, 0x0000, NULL, &priv->bo); |
136 | if (!ret) { |
137 | ret = nouveau_bo_pin(priv->bo, TTM_PL_FLAG_VRAM); |
138 | if (!ret) { |
139 | ret = nouveau_bo_map(priv->bo); |
140 | if (ret) |
141 | nouveau_bo_unpin(priv->bo); |
142 | } |
143 | if (ret) |
144 | nouveau_bo_ref(NULL, &priv->bo); |
145 | } |
146 | |
147 | if (ret) { |
148 | nv10_fence_destroy(drm); |
149 | return ret; |
150 | } |
151 | |
152 | nouveau_bo_wr32(priv->bo, 0x000, 0x00000000); |
153 | return ret; |
154 | } |
155 | |