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 <nvif/class.h> |
31 | #include <nvif/cl0002.h> |
32 | |
33 | #include <nvhw/class/cl176e.h> |
34 | |
35 | int |
36 | nv17_fence_sync(struct nouveau_fence *fence, |
37 | struct nouveau_channel *prev, struct nouveau_channel *chan) |
38 | { |
39 | struct nouveau_cli *cli = (void *)prev->user.client; |
40 | struct nv10_fence_priv *priv = chan->drm->fence; |
41 | struct nv10_fence_chan *fctx = chan->fence; |
42 | struct nvif_push *ppush = prev->chan.push; |
43 | struct nvif_push *npush = chan->chan.push; |
44 | u32 value; |
45 | int ret; |
46 | |
47 | if (!mutex_trylock(lock: &cli->mutex)) |
48 | return -EBUSY; |
49 | |
50 | spin_lock(lock: &priv->lock); |
51 | value = priv->sequence; |
52 | priv->sequence += 2; |
53 | spin_unlock(lock: &priv->lock); |
54 | |
55 | ret = PUSH_WAIT(ppush, 5); |
56 | if (!ret) { |
57 | PUSH_MTHD(ppush, NV176E, SET_CONTEXT_DMA_SEMAPHORE, fctx->sema.handle, |
58 | SEMAPHORE_OFFSET, 0, |
59 | SEMAPHORE_ACQUIRE, value + 0, |
60 | SEMAPHORE_RELEASE, value + 1); |
61 | PUSH_KICK(ppush); |
62 | } |
63 | |
64 | if (!ret && !(ret = PUSH_WAIT(npush, 5))) { |
65 | PUSH_MTHD(npush, NV176E, SET_CONTEXT_DMA_SEMAPHORE, fctx->sema.handle, |
66 | SEMAPHORE_OFFSET, 0, |
67 | SEMAPHORE_ACQUIRE, value + 1, |
68 | SEMAPHORE_RELEASE, value + 2); |
69 | PUSH_KICK(npush); |
70 | } |
71 | |
72 | mutex_unlock(lock: &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 ttm_resource *reg = priv->bo->bo.resource; |
81 | struct nv10_fence_chan *fctx; |
82 | u32 start = reg->start * PAGE_SIZE; |
83 | u32 limit = start + priv->bo->bo.base.size - 1; |
84 | int ret = 0; |
85 | |
86 | fctx = chan->fence = kzalloc(size: sizeof(*fctx), GFP_KERNEL); |
87 | if (!fctx) |
88 | return -ENOMEM; |
89 | |
90 | nouveau_fence_context_new(chan, &fctx->base); |
91 | fctx->base.emit = nv10_fence_emit; |
92 | fctx->base.read = nv10_fence_read; |
93 | fctx->base.sync = nv17_fence_sync; |
94 | |
95 | ret = nvif_object_ctor(&chan->user, "fenceCtxDma" , NvSema, |
96 | NV_DMA_FROM_MEMORY, |
97 | &(struct nv_dma_v0) { |
98 | .target = NV_DMA_V0_TARGET_VRAM, |
99 | .access = NV_DMA_V0_ACCESS_RDWR, |
100 | .start = start, |
101 | .limit = limit, |
102 | }, sizeof(struct nv_dma_v0), |
103 | &fctx->sema); |
104 | if (ret) |
105 | nv10_fence_context_del(chan); |
106 | return ret; |
107 | } |
108 | |
109 | void |
110 | nv17_fence_resume(struct nouveau_drm *drm) |
111 | { |
112 | struct nv10_fence_priv *priv = drm->fence; |
113 | |
114 | nouveau_bo_wr32(priv->bo, index: 0, val: priv->sequence); |
115 | } |
116 | |
117 | int |
118 | nv17_fence_create(struct nouveau_drm *drm) |
119 | { |
120 | struct nv10_fence_priv *priv; |
121 | int ret = 0; |
122 | |
123 | priv = drm->fence = kzalloc(size: sizeof(*priv), GFP_KERNEL); |
124 | if (!priv) |
125 | return -ENOMEM; |
126 | |
127 | priv->base.dtor = nv10_fence_destroy; |
128 | priv->base.resume = nv17_fence_resume; |
129 | priv->base.context_new = nv17_fence_context_new; |
130 | priv->base.context_del = nv10_fence_context_del; |
131 | spin_lock_init(&priv->lock); |
132 | |
133 | ret = nouveau_bo_new(&drm->client, size: 4096, align: 0x1000, |
134 | NOUVEAU_GEM_DOMAIN_VRAM, |
135 | tile_mode: 0, tile_flags: 0x0000, NULL, NULL, &priv->bo); |
136 | if (!ret) { |
137 | ret = nouveau_bo_pin(priv->bo, NOUVEAU_GEM_DOMAIN_VRAM, contig: false); |
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, pnvbo: &priv->bo); |
145 | } |
146 | |
147 | if (ret) { |
148 | nv10_fence_destroy(drm); |
149 | return ret; |
150 | } |
151 | |
152 | nouveau_bo_wr32(priv->bo, index: 0x000, val: 0x00000000); |
153 | return ret; |
154 | } |
155 | |