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
|
/*
* Copyright 1993 by Thomas Mueller
*
* 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 name of Thomas Mueller not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Thomas Mueller makes no representations
* about the suitability of this software for any purpose. It is provided
* "as is" without express or implied warranty.
*
* THOMAS MUELLER DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THOMAS MUELLER 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.
*
*/
/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/lynxos/lynx_mmap.c,v 3.2 1996/09/29 13:38:29 dawes Exp $ */
#include "X.h"
#include "input.h"
#include "scrnintstr.h"
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"
/*
* Read BIOS using smem_create facility
*/
int xf86ReadBIOS(Base, Offset, Buf, Len)
unsigned long Base;
unsigned long Offset;
unsigned char *Buf;
int Len;
{
char *p;
int mlen;
mlen = (Offset + Len + 4095) & ~4096;
p = smem_create("BIOS-probe", (char *)Base, mlen, SM_READ);
if (p == NULL)
{
/* check if there is a stale segment around */
if (smem_remove("BIOS-probe") == 0) {
ErrorF("xf86ReadBios: removed stale smem_ segment\n");
p = smem_create("BIOS-probe", (char *)Base, mlen, SM_READ);
}
if (p == NULL) {
ErrorF("xf86ReadBios: Failed to smem_create Base %x len %x %s \n",
Base, mlen, strerror(errno));
return(-1);
}
}
memcpy(Buf, p + Offset, Len);
smem_create(NULL, p, 0, SM_DETACH);
smem_remove("BIOS-probe");
return(Len);
}
|
