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
|
/*
* Copyright 2007 Nouveau Project
*
* 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 AUTHORS 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.
*/
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "nouveau_drmif.h"
#include "nouveau_dma.h"
int
nouveau_channel_alloc(struct nouveau_device *dev, uint32_t fb_ctxdma,
uint32_t tt_ctxdma, struct nouveau_channel **chan)
{
struct nouveau_device_priv *nvdev = nouveau_device(dev);
struct nouveau_channel_priv *nvchan;
int ret;
if (!nvdev || !chan || *chan)
return -EINVAL;
nvchan = calloc(1, sizeof(struct nouveau_channel_priv));
if (!nvchan)
return -ENOMEM;
nvchan->base.device = dev;
nvchan->drm.fb_ctxdma_handle = fb_ctxdma;
nvchan->drm.tt_ctxdma_handle = tt_ctxdma;
ret = drmCommandWriteRead(nvdev->fd, DRM_NOUVEAU_CHANNEL_ALLOC,
&nvchan->drm, sizeof(nvchan->drm));
if (ret) {
free(nvchan);
return ret;
}
nvchan->base.id = nvchan->drm.channel;
if (nouveau_grobj_ref(&nvchan->base, nvchan->drm.fb_ctxdma_handle,
&nvchan->base.vram) ||
nouveau_grobj_ref(&nvchan->base, nvchan->drm.tt_ctxdma_handle,
&nvchan->base.gart)) {
nouveau_channel_free((void *)&nvchan);
return -EINVAL;
}
ret = drmMap(nvdev->fd, nvchan->drm.ctrl, nvchan->drm.ctrl_size,
(void*)&nvchan->user);
if (ret) {
nouveau_channel_free((void *)&nvchan);
return ret;
}
nvchan->put = &nvchan->user[0x40/4];
nvchan->get = &nvchan->user[0x44/4];
nvchan->ref_cnt = &nvchan->user[0x48/4];
ret = drmMap(nvdev->fd, nvchan->drm.notifier, nvchan->drm.notifier_size,
(drmAddressPtr)&nvchan->notifier_block);
if (ret) {
nouveau_channel_free((void *)&nvchan);
return ret;
}
ret = drmMap(nvdev->fd, nvchan->drm.cmdbuf, nvchan->drm.cmdbuf_size,
(void*)&nvchan->pushbuf);
if (ret) {
nouveau_channel_free((void *)&nvchan);
return ret;
}
nouveau_dma_channel_init(&nvchan->base);
nouveau_pushbuf_init(&nvchan->base);
*chan = &nvchan->base;
return 0;
}
void
nouveau_channel_free(struct nouveau_channel **chan)
{
struct nouveau_channel_priv *nvchan;
struct nouveau_device_priv *nvdev;
struct drm_nouveau_channel_free cf;
if (!chan || !*chan)
return;
nvchan = nouveau_channel(*chan);
*chan = NULL;
nvdev = nouveau_device(nvchan->base.device);
FIRE_RING_CH(&nvchan->base);
nouveau_grobj_free(&nvchan->base.vram);
nouveau_grobj_free(&nvchan->base.gart);
cf.channel = nvchan->drm.channel;
drmCommandWrite(nvdev->fd, DRM_NOUVEAU_CHANNEL_FREE, &cf, sizeof(cf));
free(nvchan);
}
|
