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author | nick <nick@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2002-01-15 08:33:09 +0000 |
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committer | nick <nick@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2002-01-15 08:33:09 +0000 |
commit | 5f3109cf1215c57e1dcada1fb27182240d01c79b (patch) | |
tree | 2a95aa1d83190202c9b3e0bf988080251bcb8645 /libdha/sysdep/pci_os2.c | |
parent | 798a238afabbd6238469028da2109bd5d739a618 (diff) | |
download | mpv-5f3109cf1215c57e1dcada1fb27182240d01c79b.tar.bz2 mpv-5f3109cf1215c57e1dcada1fb27182240d01c79b.tar.xz |
Improved readability and new stuffs
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4165 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'libdha/sysdep/pci_os2.c')
-rw-r--r-- | libdha/sysdep/pci_os2.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/libdha/sysdep/pci_os2.c b/libdha/sysdep/pci_os2.c new file mode 100644 index 0000000000..4f0df53b30 --- /dev/null +++ b/libdha/sysdep/pci_os2.c @@ -0,0 +1,53 @@ +/* + This file is based on: + $XFree86: xc/programs/Xserver/hw/xfree86/etc/scanpci.c,v 3.34.2.17 1998/11/10 11:55:40 dawes Exp $ + Modified for readability by Nick Kurshev +*/ +#define INCL_DOSFILEMGR +#include <os2.h> + +static USHORT callgate[3] = {0,0,0}; + +static __inline__ void enable_os_io(void) +{ + HFILE hfd; + ULONG dlen,action; + APIRET rc; + static char *ioDrvPath = "/dev/fastio$"; + + if (DosOpen((PSZ)ioDrvPath, (PHFILE)&hfd, (PULONG)&action, + (ULONG)0, FILE_SYSTEM, FILE_OPEN, + OPEN_SHARE_DENYNONE|OPEN_FLAGS_NOINHERIT|OPEN_ACCESS_READONLY, + (ULONG)0) != 0) { + fprintf(stderr,"Error opening fastio$ driver...\n"); + fprintf(stderr,"Please install xf86sup.sys in config.sys!\n"); + exit(42); + } + callgate[0] = callgate[1] = 0; + +/* Get callgate from driver for fast io to ports and other stuff */ + + rc = DosDevIOCtl(hfd, (ULONG)0x76, (ULONG)0x64, + NULL, 0, NULL, + (ULONG*)&callgate[2], sizeof(USHORT), &dlen); + if (rc) { + fprintf(stderr,"xf86-OS/2: EnableIOPorts failed, rc=%d, dlen=%d; emergency exit\n", + rc,dlen); + DosClose(hfd); + exit(42); + } + +/* Calling callgate with function 13 sets IOPL for the program */ + + asm volatile ("movl $13,%%ebx;.byte 0xff,0x1d;.long _callgate" + : /*no outputs */ + : /*no inputs */ + : "eax","ebx","ecx","edx","cc"); + + DosClose(hfd); +} + +static __inline__ void disable_os_io(void) +{ +/* Nothing to do */ +} |