1 /*
2 * Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany
3 * Copyright 1993 by David Wexelblat <dwex@goblin.org>
4 * Copyright 1999 by David Holland <davidh@iquest.net>
5 *
6 * Permission to use, copy, modify, distribute, and sell this software and its
7 * documentation for any purpose is hereby granted without fee, provided that
8 * the above copyright notice appear in all copies and that both that copyright
9 * notice and this permission notice appear in supporting documentation, and
10 * that the names of the copyright holders not be used in advertising or
11 * publicity pertaining to distribution of the software without specific,
12 * written prior permission. The copyright holders make no representations
13 * about the suitability of this software for any purpose. It is provided "as
14 * is" without express or implied warranty.
15 *
16 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
17 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT
18 * SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
19 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
20 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
21 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
22 * OF THIS SOFTWARE.
23 *
24 */
25 /* Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
26 *
27 * Permission is hereby granted, free of charge, to any person obtaining a
28 * copy of this software and associated documentation files (the "Software"),
29 * to deal in the Software without restriction, including without limitation
30 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
31 * and/or sell copies of the Software, and to permit persons to whom the
32 * Software is furnished to do so, subject to the following conditions:
33 *
34 * The above copyright notice and this permission notice (including the next
35 * paragraph) shall be included in all copies or substantial portions of the
36 * Software.
37 *
38 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
39 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
40 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
41 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
42 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
43 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
44 * DEALINGS IN THE SOFTWARE.
45 */
46
47 #ifdef HAVE_XORG_CONFIG_H
48 #include <xorg-config.h>
49 #endif
50
51 #include <sys/types.h> /* get __x86 definition if not set by compiler */
52
53 #if defined(__i386__) || defined(__i386) || defined(__x86)
54 #define _NEED_SYSI86
55 #endif
56 #include "xf86.h"
57 #include "xf86Priv.h"
58 #include "xf86_OSlib.h"
59 #include "xf86OSpriv.h"
60 #include <sys/mman.h>
61
62 /***************************************************************************/
63 /* Video Memory Mapping section */
64 /***************************************************************************/
65
66 _X_HIDDEN void
xf86OSInitVidMem(VidMemInfoPtr pVidMem)67 xf86OSInitVidMem(VidMemInfoPtr pVidMem)
68 {
69 pVidMem->initialised = TRUE;
70 }
71
72 /***************************************************************************/
73 /* I/O Permissions section */
74 /***************************************************************************/
75
76 void
xf86OSInputThreadInit(void)77 xf86OSInputThreadInit(void)
78 {
79 /*
80 * Need to enable in input thread as well, as Solaris kernel tracks
81 * IOPL per-thread and doesn't inherit when creating a new thread.
82 */
83 xf86EnableIO();
84 }
85
86 Bool
xf86EnableIO(void)87 xf86EnableIO(void)
88 {
89 #if defined(__i386__) || defined(__i386) || defined(__x86)
90 if (sysi86(SI86V86, V86SC_IOPL, PS_IOPL) < 0) {
91 xf86Msg(X_WARNING, "xf86EnableIOPorts: Failed to set IOPL for I/O\n");
92 return FALSE;
93 }
94 #endif /* i386 */
95 return TRUE;
96 }
97
98 void
xf86DisableIO(void)99 xf86DisableIO(void)
100 {
101 #if defined(__i386__) || defined(__i386) || defined(__x86)
102 sysi86(SI86V86, V86SC_IOPL, 0);
103 #endif /* i386 */
104 }
105