67ef17689d2da12acf41fbfe02ed75e52b33eb39
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>
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.
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
25 /* Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
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:
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
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.
47 #ifdef HAVE_XORG_CONFIG_H
48 #include <xorg-config.h>
51 #include <sys/types.h> /* get __x86 definition if not set by compiler */
53 #if defined(__i386__) || defined(__i386) || defined(__x86)
58 #include "xf86_OSlib.h"
59 #include "xf86OSpriv.h"
62 /***************************************************************************/
63 /* Video Memory Mapping section */
64 /***************************************************************************/
66 static char *apertureDevName
= NULL
;
67 static int apertureDevFD_ro
= -1;
68 static int apertureDevFD_rw
= -1;
73 if (apertureDevName
== NULL
) {
74 apertureDevName
= "/dev/xsvc";
75 if ((apertureDevFD_rw
= open(apertureDevName
, O_RDWR
)) < 0) {
76 xf86MsgVerb(X_WARNING
, 0,
77 "solOpenAperture: failed to open %s (%s)\n",
78 apertureDevName
, strerror(errno
));
79 apertureDevName
= "/dev/fbs/aperture";
80 apertureDevFD_rw
= open(apertureDevName
, O_RDWR
);
82 apertureDevFD_ro
= open(apertureDevName
, O_RDONLY
);
84 if ((apertureDevFD_rw
< 0) || (apertureDevFD_ro
< 0)) {
85 xf86MsgVerb(X_WARNING
, 0,
86 "solOpenAperture: failed to open %s (%s)\n",
87 apertureDevName
, strerror(errno
));
88 xf86MsgVerb(X_WARNING
, 0,
89 "solOpenAperture: either /dev/fbs/aperture"
90 " or /dev/xsvc required\n");
92 apertureDevName
= NULL
;
94 if (apertureDevFD_rw
>= 0) {
95 close(apertureDevFD_rw
);
97 apertureDevFD_rw
= -1;
99 if (apertureDevFD_ro
>= 0) {
100 close(apertureDevFD_ro
);
102 apertureDevFD_ro
= -1;
111 solMapVidMem(int ScreenNum
, unsigned long Base
, unsigned long Size
, int Flags
)
117 if (Flags
& VIDMEM_READONLY
) {
118 fd
= apertureDevFD_ro
;
122 fd
= apertureDevFD_rw
;
123 prot
= PROT_READ
| PROT_WRITE
;
127 xf86DrvMsg(ScreenNum
, X_ERROR
,
128 "solMapVidMem: failed to open %s (%s)\n",
129 apertureDevName
, strerror(errno
));
133 base
= mmap(NULL
, Size
, prot
, MAP_SHARED
, fd
, (off_t
) Base
);
135 if (base
== MAP_FAILED
) {
136 xf86DrvMsg(ScreenNum
, X_ERROR
,
137 "solMapVidMem: failed to mmap %s (0x%08lx,0x%lx) (%s)\n",
138 apertureDevName
, Base
, Size
, strerror(errno
));
147 solUnMapVidMem(int ScreenNum
, pointer Base
, unsigned long Size
)
149 if (munmap(Base
, Size
) != 0) {
150 xf86DrvMsgVerb(ScreenNum
, X_WARNING
, 0,
151 "solUnMapVidMem: failed to unmap %s"
152 " (0x%p,0x%lx) (%s)\n",
153 apertureDevName
, Base
, Size
, strerror(errno
));
158 xf86OSInitVidMem(VidMemInfoPtr pVidMem
)
160 pVidMem
->linearSupported
= solOpenAperture();
161 if (pVidMem
->linearSupported
) {
162 pVidMem
->mapMem
= solMapVidMem
;
163 pVidMem
->unmapMem
= solUnMapVidMem
;
166 xf86MsgVerb(X_WARNING
, 0,
167 "xf86OSInitVidMem: linear memory access disabled\n");
169 pVidMem
->initialised
= TRUE
;
173 * Read BIOS via mmap()ing physical memory.
176 xf86ReadBIOS(unsigned long Base
, unsigned long Offset
, unsigned char *Buf
,
183 psize
= getpagesize();
184 Offset
+= Base
& (psize
- 1);
185 Base
&= ~(psize
- 1);
186 mlen
= (Offset
+ Len
+ psize
- 1) & ~(psize
- 1);
188 if (solOpenAperture() == FALSE
) {
190 "xf86ReadBIOS: Failed to open aperture to read BIOS\n");
194 ptr
= (unsigned char *) mmap(NULL
, mlen
, PROT_READ
,
195 MAP_SHARED
, apertureDevFD_ro
, (off_t
) Base
);
196 if (ptr
== MAP_FAILED
) {
197 xf86Msg(X_WARNING
, "xf86ReadBIOS: %s mmap failed [0x%08lx, 0x%04x]\n",
198 apertureDevName
, Base
, mlen
);
202 (void) memcpy(Buf
, (void *) (ptr
+ Offset
), Len
);
203 if (munmap((caddr_t
) ptr
, mlen
) != 0) {
204 xf86MsgVerb(X_WARNING
, 0,
205 "xf86ReadBIOS: failed to unmap %s (0x%p,0x%x) (%s)\n",
206 apertureDevName
, ptr
, mlen
, strerror(errno
));
212 /***************************************************************************/
213 /* I/O Permissions section */
214 /***************************************************************************/
216 #if defined(__i386__) || defined(__i386) || defined(__x86)
217 static Bool ExtendedEnabled
= FALSE
;
223 #if defined(__i386__) || defined(__i386) || defined(__x86)
227 if (sysi86(SI86V86
, V86SC_IOPL
, PS_IOPL
) < 0) {
228 xf86Msg(X_WARNING
, "xf86EnableIOPorts: Failed to set IOPL for I/O\n");
231 ExtendedEnabled
= TRUE
;
239 #if defined(__i386__) || defined(__i386) || defined(__x86)
240 if (!ExtendedEnabled
)
243 sysi86(SI86V86
, V86SC_IOPL
, 0);
245 ExtendedEnabled
= FALSE
;