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
|
/*
* Copyright 1992 by Rich Murphey <Rich@Rice.edu>
* 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 Rich Murphey and David Wexelblat
* not be used in advertising or publicity pertaining to distribution of
* the software without specific, written prior permission. Rich Murphey 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.
*
* RICH MURPHEY AND DAVID WEXELBLAT DISCLAIM ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL RICH MURPHEY 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 <X11/X.h>
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"
#include "xf86OSpriv.h"
#include "bus/Pci.h"
/***************************************************************************/
/* Video Memory Mapping section */
/***************************************************************************/
#ifdef __OpenBSD__
#define DEV_MEM "/dev/xf86"
#endif
static void *ppcMapVidMem(int, unsigned long, unsigned long, int flags);
static void ppcUnmapVidMem(int, void *, unsigned long);
Bool xf86EnableIO(void);
void xf86DisableIO(void);
void
xf86OSInitVidMem(VidMemInfoPtr pVidMem)
{
pVidMem->linearSupported = TRUE;
pVidMem->mapMem = ppcMapVidMem;
pVidMem->unmapMem = ppcUnmapVidMem;
pVidMem->initialised = TRUE;
xf86EnableIO();
}
volatile unsigned char *ioBase = MAP_FAILED;
static void *
ppcMapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags)
{
int fd = xf86Info.consoleFd;
void *base;
#ifdef DEBUG
xf86MsgVerb(X_INFO, 3, "mapVidMem %lx, %lx, fd = %d", Base, Size, fd);
#endif
base = mmap(0, Size,
(flags & VIDMEM_READONLY) ?
PROT_READ : (PROT_READ | PROT_WRITE), MAP_SHARED, fd, Base);
if (base == MAP_FAILED)
FatalError("%s: could not mmap screen [s=%x,a=%x] (%s)",
"xf86MapVidMem", Size, Base, strerror(errno));
return base;
}
static void
ppcUnmapVidMem(int ScreenNum, void *Base, unsigned long Size)
{
munmap(Base, Size);
}
int
xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf,
int Len)
{
int rv;
static int kmem = -1;
if (kmem == -1) {
kmem = open(DEV_MEM, 2);
if (kmem == -1) {
FatalError("xf86ReadBIOS: open %s", DEV_MEM);
}
}
#ifdef DEBUG
xf86MsgVerb(X_INFO, 3, "xf86ReadBIOS() %lx %lx, %x\n", Base, Offset, Len);
#endif
lseek(kmem, Base + Offset, 0);
rv = read(kmem, Buf, Len);
return rv;
}
Bool
xf86EnableIO()
{
int fd = xf86Info.consoleFd;
xf86MsgVerb(X_WARNING, 3, "xf86EnableIO %d\n", fd);
if (ioBase == MAP_FAILED) {
ioBase = mmap(NULL, 0x10000, PROT_READ | PROT_WRITE, MAP_SHARED, fd,
0xf2000000);
xf86MsgVerb(X_INFO, 3, "xf86EnableIO: %08x\n", ioBase);
if (ioBase == MAP_FAILED) {
xf86MsgVerb(X_WARNING, 3, "Can't map IO space!\n");
return FALSE;
}
}
return TRUE;
}
void
xf86DisableIO()
{
if (ioBase != MAP_FAILED) {
munmap(__UNVOLATILE(ioBase), 0x10000);
ioBase = MAP_FAILED;
}
}
|
