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
|
/*
* Copyright (c) 2006-2007 Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* 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 OR COPYRIGHT HOLDERS
* 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 <linux/pci.h>
#include "wc.h"
#if defined(__i386__) || defined(__x86_64__)
pgprot_t pgprot_wc(pgprot_t _prot)
{
return pgprot_writecombine(_prot);
}
int mlx4_wc_enabled(void)
{
return 1;
}
#elif defined(CONFIG_PPC64)
pgprot_t pgprot_wc(pgprot_t _prot)
{
return __pgprot((pgprot_val(_prot) | _PAGE_NO_CACHE) &
~(pgprot_t)_PAGE_GUARDED);
}
int mlx4_wc_enabled(void)
{
return 1;
}
#else /* !(defined(__i386__) || defined(__x86_64__)) */
pgprot_t pgprot_wc(pgprot_t _prot)
{
return pgprot_noncached(_prot);
}
int mlx4_wc_enabled(void)
{
return 0;
}
#endif
|
