diff options
Diffstat (limited to 'nx-X11/programs/Xserver/hw/xfree86/os-support/os2/os2_bios.c')
| -rw-r--r-- | nx-X11/programs/Xserver/hw/xfree86/os-support/os2/os2_bios.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/hw/xfree86/os-support/os2/os2_bios.c b/nx-X11/programs/Xserver/hw/xfree86/os-support/os2/os2_bios.c new file mode 100644 index 000000000..4069ad745 --- /dev/null +++ b/nx-X11/programs/Xserver/hw/xfree86/os-support/os2/os2_bios.c @@ -0,0 +1,143 @@ +/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/os2/os2_bios.c,v 3.10 2000/04/05 18:13:52 dawes Exp $ */ +/* + * (c) Copyright 1994 by Holger Veit + * <Holger.Veit@gmd.de> + * Modified 1996 by Sebastien Marineau <marineau@genie.uottawa.ca> + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * HOLGER VEIT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF + * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + * Except as contained in this notice, the name of Holger Veit shall not be + * used in advertising or otherwise to promote the sale, use or other dealings + * in this Software without prior written authorization from Holger Veit. + * + */ +/* $XConsortium: os2_bios.c /main/5 1996/10/27 11:48:45 kaleb $ */ + +#define I_NEED_OS2_H +#ifdef HAVE_XORG_CONFIG_H +#include <xorg-config.h> +#endif + +#include <X11/X.h> +#include "input.h" +#include "scrnintstr.h" + +#define INCL_32 +#define INCL_DOS +#define INCL_DOSFILEMGR +#include "xf86.h" +#include "xf86Priv.h" +#include "xf86_OSlib.h" + +/* + * Read BIOS via xf86sup.SYS device driver + */ + +static APIRET doioctl(HFILE fd,ULONG addr,ULONG len,unsigned char* dbuf) +{ + UCHAR *dta; + ULONG plen,dlen; + APIRET rc; + + struct { + ULONG command; + ULONG physaddr; + USHORT numbytes; + } par; + + /* prepare parameter and data packets for ioctl */ + par.command = 0; + par.physaddr = addr; + par.numbytes = dlen = len; + plen = sizeof(par); + + /* issue call to get a readonly copy of BIOS ROM */ + rc = DosDevIOCtl(fd, (ULONG)0x76, (ULONG)0x64, + (PVOID)&par, (ULONG)plen, (PULONG)&plen, + (PVOID)dbuf, (ULONG)dlen, (PULONG)&dlen); + + return rc; +} + +int xf86ReadBIOS(Base, Offset, Buf, Len) +unsigned long Base; +unsigned long Offset; +unsigned char *Buf; +int Len; +{ + HFILE fd; + int i; + ULONG action; + APIRET rc; + ULONG Phys_address; + UCHAR* dta; + int off, chunksz,lensave; + + /* allocate dta */ + dta = (UCHAR*)xalloc(Len); + + Phys_address=Base+Offset; + + /* open the special device pmap$ (default with OS/2) */ + if (DosOpen((PSZ)"PMAP$", (PHFILE)&fd, (PULONG)&action, + (ULONG)0, FILE_SYSTEM, FILE_OPEN, + OPEN_SHARE_DENYNONE|OPEN_FLAGS_NOINHERIT|OPEN_ACCESS_READONLY, + (ULONG)0) != 0) { + FatalError("xf86ReadBIOS: install DEVICE=path\\xf86sup.SYS!"); + return -1; + } + + /* copy 32K at a time */ + off = 0; + lensave = Len; + while (Len > 0) { + chunksz = (Len > 32768) ? 32768 : Len; + Len -= chunksz; + rc = doioctl(fd,(ULONG)Phys_address,chunksz,dta+off); + if (rc != 0) { + FatalError("xf86ReadBIOS: BIOS map failed, addr=%lx, rc=%d\n", + Phys_address,rc); + xfree(dta); + DosClose(fd); + return -1; + } + off += chunksz; + } + + /* + * Sanity check... No longer fatal, as some PS/1 and PS/2 fail here but still work. + * S. Marineau, 10/10/96 + */ +#if 0 + if ((Phys_address & 0x7fff) != 0 && + (dta[0] != 0x55 || dta[1] != 0xaa)) { + FatalError("BIOS sanity check failed, addr=%x\nPlease report if you encounter problems\n", + Phys_address); + } +#endif + + /* copy data to buffer */ + memcpy(Buf, dta, lensave); + xfree(dta); + + /* close device */ + DosClose(fd); + + return(lensave); +} |