diff options
Diffstat (limited to 'nx-X11/programs/Xserver/hw/xfree86/os-support/bsdi/bsdi_video.c')
| -rw-r--r-- | nx-X11/programs/Xserver/hw/xfree86/os-support/bsdi/bsdi_video.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/hw/xfree86/os-support/bsdi/bsdi_video.c b/nx-X11/programs/Xserver/hw/xfree86/os-support/bsdi/bsdi_video.c new file mode 100644 index 000000000..5b1e474c7 --- /dev/null +++ b/nx-X11/programs/Xserver/hw/xfree86/os-support/bsdi/bsdi_video.c @@ -0,0 +1,182 @@ +/* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/bsdi/bsdi_video.c,v 3.10 2003/03/14 13:46:05 tsi Exp $ */ +/* + * Copyright 1992 by Rich Murphey <Rich@Rice.edu> + * Copyright 1993 by David Wexelblat <dwex@goblin.org> + * + * 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 names of Rich Murphey and David Wexelblat + * not be used in advertising or publicity pertaining to distribution of + * the software without specific, written prior permission. Rich Murphey and + * David Wexelblat make no representations about the suitability of this + * software for any purpose. It is provided "as is" without express or + * implied warranty. + * + * RICH MURPHEY AND DAVID WEXELBLAT DISCLAIM ALL WARRANTIES WITH REGARD TO + * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND + * FITNESS, IN NO EVENT SHALL RICH MURPHEY OR DAVID WEXELBLAT 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. + * + */ +/* $XConsortium: bsdi_video.c /main/4 1996/02/21 17:51:22 kaleb $ */ + +#ifdef HAVE_XORG_CONFIG_H +#include <xorg-config.h> +#endif + +#include <X11/X.h> +#include "input.h" +#include "scrnintstr.h" + +#include "xf86.h" +#include "xf86Priv.h" +#include "xf86_OSlib.h" +#include "xf86OSpriv.h" + +#ifndef MAP_FAILED +#define MAP_FAILED ((void *)-1) +#endif + +/***************************************************************************/ +/* Video Memory Mapping section */ +/***************************************************************************/ + +pointer +xf86MapVidMem(int ScreenNum, int Flags, unsigned long Base, unsigned long Size) +{ + pointer base; + + /* just try the mapping, and either it will work, or not */ + base = mmap(0, Size, + (Flags & VIDMEM_READONLY) ? + PROT_READ : (PROT_READ | PROT_WRITE), + MAP_FILE, xf86Info.screenFd, Base - 0xA0000); + if (base == MAP_FAILED) + { + FatalError("xf86MapVidMem: Could not mmap /dev/vga (%s) at 0x%x\n", + strerror(errno), Base); + } + return(base); +} + +void +xf86UnMapVidMem(int ScreenNum, pointer Base, unsigned long Size) +{ + munmap((caddr_t)Base, Size); +} + +Bool +xf86LinearVidMem() +{ + return(TRUE); +} + +/***************************************************************************/ +/* I/O Permissions section */ +/***************************************************************************/ + +/* + * BSDI has a single system-wide TSS I/O bitmap that covers ports up to + * 0xFFFF. By default, the TSS has ports 0x3B0-0x3DF enabled. + * + * It also allows the IOPL to be enabled or disabled on a per-process + * basis. Here, we use the IOPL only. + */ + +static Bool ExtendedEnabled = FALSE; + +Bool +xf86EnableIO() +{ + if (ExtendedEnabled) + return TRUE; + + if (ioctl(xf86Info.consoleFd, PCCONENABIOPL, 0) < 0) + { + xf86Msg(X_WARNING,"%s: Failed to set IOPL for extended I/O\n", + "xf86EnableIOPorts"); + return FALSE; + } + ExtendedEnabled = TRUE; + return TRUE; +} + +void +xf86DisableIO() +{ + if (!ExtendedEnabled) + return; + + ioctl(xf86Info.consoleFd, PCCONDISABIOPL, 0); + ExtendedEnabled = FALSE; +} + + +/***************************************************************************/ +/* Interrupt Handling section */ +/***************************************************************************/ + +Bool +xf86DisableInterrupts() +{ + if (!ExtendedEnabled) + { + if (ioctl(xf86Info.consoleFd, PCCONENABIOPL, 0) < 0) + { + return(FALSE); + } + } + +#ifdef __GNUC__ + __asm__ __volatile__("cli"); +#else + asm("cli"); +#endif /* __GNUC__ */ + + if (!ExtendedEnabled) + { + ioctl(xf86Info.consoleFd, PCCONDISABIOPL, 0); + } + + return(TRUE); +} + +void +xf86EnableInterrupts() +{ + if (!ExtendedEnabled) + { + ioctl(xf86Info.consoleFd, PCCONENABIOPL, 0); + } + +#ifdef __GNUC__ + __asm__ __volatile__("sti"); +#else + asm("sti"); +#endif /* __GNUC__ */ + + if (!ExtendedEnabled) + { + ioctl(xf86Info.consoleFd, PCCONDISABIOPL, 0); + } + + return; +} + +void +xf86MapReadSideEffects(int ScreenNum, int Flags, pointer Base, + unsigned long Size) +{ +} + +Bool +xf86CheckMTRR(int ScreenNum) +{ + return FALSE; +} + |