1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/*
* Copyright 2012 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Ben Skeggs <bskeggs@redhat.com>
*/
#include "nouveau_drv.h"
#include "nouveau_dma.h"
#include "nv10_fence.h"
#include <nvif/push006c.h>
#include <nvif/class.h>
#include <nvif/cl0002.h>
#include <nvhw/class/cl176e.h>
int
nv17_fence_sync(struct nouveau_fence *fence,
struct nouveau_channel *prev, struct nouveau_channel *chan)
{
struct nouveau_cli *cli = (void *)prev->user.client;
struct nv10_fence_priv *priv = chan->drm->fence;
struct nv10_fence_chan *fctx = chan->fence;
struct nvif_push *ppush = prev->chan.push;
struct nvif_push *npush = chan->chan.push;
u32 value;
int ret;
if (!mutex_trylock(&cli->mutex))
return -EBUSY;
spin_lock(&priv->lock);
value = priv->sequence;
priv->sequence += 2;
spin_unlock(&priv->lock);
ret = PUSH_WAIT(ppush, 5);
if (!ret) {
PUSH_MTHD(ppush, NV176E, SET_CONTEXT_DMA_SEMAPHORE, fctx->sema.handle,
SEMAPHORE_OFFSET, 0,
SEMAPHORE_ACQUIRE, value + 0,
SEMAPHORE_RELEASE, value + 1);
PUSH_KICK(ppush);
}
if (!ret && !(ret = PUSH_WAIT(npush, 5))) {
PUSH_MTHD(npush, NV176E, SET_CONTEXT_DMA_SEMAPHORE, fctx->sema.handle,
SEMAPHORE_OFFSET, 0,
SEMAPHORE_ACQUIRE, value + 1,
SEMAPHORE_RELEASE, value + 2);
PUSH_KICK(npush);
}
mutex_unlock(&cli->mutex);
return 0;
}
static int
nv17_fence_context_new(struct nouveau_channel *chan)
{
struct nv10_fence_priv *priv = chan->drm->fence;
struct nv10_fence_chan *fctx;
struct ttm_resource *reg = &priv->bo->bo.mem;
u32 start = reg->start * PAGE_SIZE;
u32 limit = start + priv->bo->bo.base.size - 1;
int ret = 0;
fctx = chan->fence = kzalloc(sizeof(*fctx), GFP_KERNEL);
if (!fctx)
return -ENOMEM;
nouveau_fence_context_new(chan, &fctx->base);
fctx->base.emit = nv10_fence_emit;
fctx->base.read = nv10_fence_read;
fctx->base.sync = nv17_fence_sync;
ret = nvif_object_ctor(&chan->user, "fenceCtxDma", NvSema,
NV_DMA_FROM_MEMORY,
&(struct nv_dma_v0) {
.target = NV_DMA_V0_TARGET_VRAM,
.access = NV_DMA_V0_ACCESS_RDWR,
.start = start,
.limit = limit,
}, sizeof(struct nv_dma_v0),
&fctx->sema);
if (ret)
nv10_fence_context_del(chan);
return ret;
}
void
nv17_fence_resume(struct nouveau_drm *drm)
{
struct nv10_fence_priv *priv = drm->fence;
nouveau_bo_wr32(priv->bo, 0, priv->sequence);
}
int
nv17_fence_create(struct nouveau_drm *drm)
{
struct nv10_fence_priv *priv;
int ret = 0;
priv = drm->fence = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->base.dtor = nv10_fence_destroy;
priv->base.resume = nv17_fence_resume;
priv->base.context_new = nv17_fence_context_new;
priv->base.context_del = nv10_fence_context_del;
spin_lock_init(&priv->lock);
ret = nouveau_bo_new(&drm->client, 4096, 0x1000,
NOUVEAU_GEM_DOMAIN_VRAM,
0, 0x0000, NULL, NULL, &priv->bo);
if (!ret) {
ret = nouveau_bo_pin(priv->bo, NOUVEAU_GEM_DOMAIN_VRAM, false);
if (!ret) {
ret = nouveau_bo_map(priv->bo);
if (ret)
nouveau_bo_unpin(priv->bo);
}
if (ret)
nouveau_bo_ref(NULL, &priv->bo);
}
if (ret) {
nv10_fence_destroy(drm);
return ret;
}
nouveau_bo_wr32(priv->bo, 0x000, 0x00000000);
return ret;
}
|
