1 /*
2 * Copyright 1992 by Rich Murphey <Rich@Rice.edu>
3 * Copyright 1993 by David Wexelblat <dwex@goblin.org>
4 *
5 * Permission to use, copy, modify, distribute, and sell this software and its
6 * documentation for any purpose is hereby granted without fee, provided that
7 * the above copyright notice appear in all copies and that both that
8 * copyright notice and this permission notice appear in supporting
9 * documentation, and that the names of Rich Murphey and David Wexelblat
10 * not be used in advertising or publicity pertaining to distribution of
11 * the software without specific, written prior permission. Rich Murphey and
12 * David Wexelblat make no representations about the suitability of this
13 * software for any purpose. It is provided "as is" without express or
14 * implied warranty.
15 *
16 * RICH MURPHEY AND DAVID WEXELBLAT DISCLAIM ALL WARRANTIES WITH REGARD TO
17 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
18 * FITNESS, IN NO EVENT SHALL RICH MURPHEY OR DAVID WEXELBLAT BE LIABLE FOR
19 * ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
20 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
21 * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
22 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
23 *
24 */
25
26 #ifdef HAVE_XORG_CONFIG_H
27 #include <xorg-config.h>
28 #endif
29
30 #include <X11/X.h>
31 #include "xf86.h"
32 #include "xf86Priv.h"
33
34 #include "xf86_OSlib.h"
35 #include "xf86OSpriv.h"
36
37 #include "bus/Pci.h"
38
39 /***************************************************************************/
40 /* Video Memory Mapping section */
41 /***************************************************************************/
42
43 #ifdef __OpenBSD__
44 #define DEV_MEM "/dev/xf86"
45 #endif
46
47 Bool xf86EnableIO(void);
48 void xf86DisableIO(void);
49
50 void
xf86OSInitVidMem(VidMemInfoPtr pVidMem)51 xf86OSInitVidMem(VidMemInfoPtr pVidMem)
52 {
53 pVidMem->initialised = TRUE;
54 xf86EnableIO();
55 }
56
57 volatile unsigned char *ioBase = MAP_FAILED;
58
59 Bool
xf86EnableIO()60 xf86EnableIO()
61 {
62 int fd = xf86Info.consoleFd;
63
64 xf86MsgVerb(X_WARNING, 3, "xf86EnableIO %d\n", fd);
65 if (ioBase == MAP_FAILED) {
66 ioBase = mmap(NULL, 0x10000, PROT_READ | PROT_WRITE, MAP_SHARED, fd,
67 0xf2000000);
68 xf86MsgVerb(X_INFO, 3, "xf86EnableIO: %08x\n", ioBase);
69 if (ioBase == MAP_FAILED) {
70 xf86MsgVerb(X_WARNING, 3, "Can't map IO space!\n");
71 return FALSE;
72 }
73 }
74 return TRUE;
75 }
76
77 void
xf86DisableIO()78 xf86DisableIO()
79 {
80
81 if (ioBase != MAP_FAILED) {
82 munmap(__UNVOLATILE(ioBase), 0x10000);
83 ioBase = MAP_FAILED;
84 }
85 }
86