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
|
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim:expandtab:autoindent:tabstop=4:shiftwidth=4:filetype=c:cindent:textwidth=0:
*
* Copyright (C) 2005 Dell Inc.
* by Michael Brown <Michael_E_Brown@dell.com>
* Licensed under the Open Software License version 2.1
*
* Alternatively, you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation; either version 2 of the License,
* or (at your option) any later version.
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details.
*/
// compat header should always be first header if including system headers
#define LIBSMBIOS_SOURCE
#include "smbios/compat.h"
#include <sys/io.h>
#include "CmosRWImpl.h"
using namespace std;
namespace cmos
{
//
// CmosRWIo functions
//
// REGULAR CONSTRUCTOR
CmosRWIo::CmosRWIo ()
: ICmosRW(), Suppressable()
{}
// COPY CONSTRUCTOR
CmosRWIo::CmosRWIo (const CmosRWIo &)
: ICmosRW(), Suppressable()
{}
// OVERLOADED ASSIGNMENT
CmosRWIo & CmosRWIo::operator = (const CmosRWIo &)
{
return *this;
}
// TODO: need to throw exception on problem with iopl
//
u8 CmosRWIo::readByte (u32 indexPort, u32 dataPort, u32 offset) const
{
if(iopl(3) < 0)
throw smbios::InternalErrorImpl("iopl() failed. probably not root.");
outb_p (offset, indexPort);
return (inb_p (dataPort));
}
// TODO: need to throw exception on problem with iopl
//
void CmosRWIo::writeByte (u32 indexPort, u32 dataPort, u32 offset, u8 byte) const
{
if(iopl(3) < 0)
throw smbios::InternalErrorImpl("iopl() failed. probably not root.");
outb_p (offset, indexPort);
outb_p (byte, dataPort);
if(! isNotifySuppressed() )
{
// writers are responsible for only writing changed values
// otherwise we get to see how fast Linux can do an
// infinite loop. :-)
notify();
}
}
}
|
