2 * Copyright 1992 by Rich Murphey <Rich@Rice.edu>
3 * Copyright 1993 by David Wexelblat <dwex@goblin.org>
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
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.
26 #ifdef HAVE_XORG_CONFIG_H
27 #include <xorg-config.h>
34 #include "xf86_OSlib.h"
35 #include "xf86OSpriv.h"
39 /***************************************************************************/
40 /* Video Memory Mapping section */
41 /***************************************************************************/
44 #define DEV_MEM "/dev/xf86"
47 static pointer
ppcMapVidMem(int, unsigned long, unsigned long, int flags
);
48 static void ppcUnmapVidMem(int, pointer
, unsigned long);
50 Bool
xf86EnableIO(void);
51 void xf86DisableIO(void);
54 xf86OSInitVidMem(VidMemInfoPtr pVidMem
)
56 pVidMem
->linearSupported
= TRUE
;
57 pVidMem
->mapMem
= ppcMapVidMem
;
58 pVidMem
->unmapMem
= ppcUnmapVidMem
;
59 pVidMem
->initialised
= TRUE
;
63 volatile unsigned char *ioBase
= MAP_FAILED
;
66 ppcMapVidMem(int ScreenNum
, unsigned long Base
, unsigned long Size
, int flags
)
68 int fd
= xf86Info
.consoleFd
;
72 xf86MsgVerb(X_INFO
, 3, "mapVidMem %lx, %lx, fd = %d", Base
, Size
, fd
);
76 (flags
& VIDMEM_READONLY
) ?
77 PROT_READ
: (PROT_READ
| PROT_WRITE
), MAP_SHARED
, fd
, Base
);
78 if (base
== MAP_FAILED
)
79 FatalError("%s: could not mmap screen [s=%x,a=%x] (%s)",
80 "xf86MapVidMem", Size
, Base
, strerror(errno
));
86 ppcUnmapVidMem(int ScreenNum
, pointer Base
, unsigned long Size
)
92 xf86ReadBIOS(unsigned long Base
, unsigned long Offset
, unsigned char *Buf
,
99 kmem
= open(DEV_MEM
, 2);
101 FatalError("xf86ReadBIOS: open %s", DEV_MEM
);
106 xf86MsgVerb(X_INFO
, 3, "xf86ReadBIOS() %lx %lx, %x\n", Base
, Offset
, Len
);
109 lseek(kmem
, Base
+ Offset
, 0);
110 rv
= read(kmem
, Buf
, Len
);
118 int fd
= xf86Info
.consoleFd
;
120 xf86MsgVerb(X_WARNING
, 3, "xf86EnableIO %d\n", fd
);
121 if (ioBase
== MAP_FAILED
) {
122 ioBase
= mmap(NULL
, 0x10000, PROT_READ
| PROT_WRITE
, MAP_SHARED
, fd
,
124 xf86MsgVerb(X_INFO
, 3, "xf86EnableIO: %08x\n", ioBase
);
125 if (ioBase
== MAP_FAILED
) {
126 xf86MsgVerb(X_WARNING
, 3, "Can't map IO space!\n");
137 if (ioBase
!= MAP_FAILED
) {
138 munmap(__UNVOLATILE(ioBase
), 0x10000);