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
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
/*
* Copyright 1992 by Orest Zborowski <obz@Kodak.com>
* Copyright 1993 by David Wexelblat <dwex@goblin.org>
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the names of Orest Zborowski and David Wexelblat
* not be used in advertising or publicity pertaining to distribution of
* the software without specific, written prior permission. Orest Zborowski
* and David Wexelblat make no representations about the suitability of this
* software for any purpose. It is provided "as is" without express or
* implied warranty.
*
* OREST ZBOROWSKI AND DAVID WEXELBLAT DISCLAIMS ALL WARRANTIES WITH REGARD
* TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL OREST ZBOROWSKI OR DAVID WEXELBLAT BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <errno.h>
#include <string.h>
#include <X11/X.h>
#include "input.h"
#include "scrnintstr.h"
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"
#include "xf86OSpriv.h"
static Bool ExtendedEnabled = FALSE;
#ifdef __ia64__
#include "compiler.h"
#include <sys/io.h>
#elif !defined(__powerpc__) && \
!defined(__mc68000__) && \
!defined(__sparc__) && \
!defined(__mips__) && \
!defined(__nds32__) && \
!defined(__arm__) && \
!defined(__aarch64__) && \
!defined(__arc__) && \
!defined(__xtensa__)
/*
* Due to conflicts with "compiler.h", don't rely on <sys/io.h> to declare
* these.
*/
extern int ioperm(unsigned long __from, unsigned long __num, int __turn_on);
extern int iopl(int __level);
#endif
/***************************************************************************/
/* Video Memory Mapping section */
/***************************************************************************/
void
xf86OSInitVidMem(VidMemInfoPtr pVidMem)
{
pVidMem->initialised = TRUE;
}
/***************************************************************************/
/* I/O Permissions section */
/***************************************************************************/
#if defined(__powerpc__)
volatile unsigned char *ioBase = NULL;
#ifndef __NR_pciconfig_iobase
#define __NR_pciconfig_iobase 200
#endif
static Bool
hwEnableIO(void)
{
int fd;
unsigned int ioBase_phys = syscall(__NR_pciconfig_iobase, 2, 0, 0);
fd = open("/dev/mem", O_RDWR);
if (ioBase == NULL) {
ioBase = (volatile unsigned char *) mmap(0, 0x20000,
PROT_READ | PROT_WRITE,
MAP_SHARED, fd, ioBase_phys);
}
close(fd);
return ioBase != MAP_FAILED;
}
static void
hwDisableIO(void)
{
munmap(ioBase, 0x20000);
ioBase = NULL;
}
#elif defined(__i386__) || defined(__x86_64__) || defined(__ia64__) || \
defined(__alpha__)
static Bool
hwEnableIO(void)
{
if (ioperm(0, 1024, 1) || iopl(3)) {
ErrorF("xf86EnableIOPorts: failed to set IOPL for I/O (%s)\n",
strerror(errno));
return FALSE;
}
#if !defined(__alpha__)
/* XXX: this is actually not trapping anything because of iopl(3)
* above */
ioperm(0x40, 4, 0); /* trap access to the timer chip */
ioperm(0x60, 4, 0); /* trap access to the keyboard controller */
#endif
return TRUE;
}
static void
hwDisableIO(void)
{
iopl(0);
ioperm(0, 1024, 0);
}
#else /* non-IO architectures */
#define hwEnableIO() TRUE
#define hwDisableIO() do {} while (0)
#endif
Bool
xf86EnableIO(void)
{
if (ExtendedEnabled)
return TRUE;
ExtendedEnabled = hwEnableIO();
return ExtendedEnabled;
}
void
xf86DisableIO(void)
{
if (!ExtendedEnabled)
return;
hwDisableIO();
ExtendedEnabled = FALSE;
}
#if defined (__alpha__)
extern int readDense8(void *Base, register unsigned long Offset);
extern int readDense16(void *Base, register unsigned long Offset);
extern int readDense32(void *Base, register unsigned long Offset);
extern void
writeDense8(int Value, void *Base, register unsigned long Offset);
extern void
writeDense16(int Value, void *Base, register unsigned long Offset);
extern void
writeDense32(int Value, void *Base, register unsigned long Offset);
void (*xf86WriteMmio8) (int Value, void *Base, unsigned long Offset)
= writeDense8;
void (*xf86WriteMmio16) (int Value, void *Base, unsigned long Offset)
= writeDense16;
void (*xf86WriteMmio32) (int Value, void *Base, unsigned long Offset)
= writeDense32;
int (*xf86ReadMmio8) (void *Base, unsigned long Offset)
= readDense8;
int (*xf86ReadMmio16) (void *Base, unsigned long Offset)
= readDense16;
int (*xf86ReadMmio32) (void *Base, unsigned long Offset)
= readDense32;
#endif /* __alpha__ */
|
