diff options
Diffstat (limited to 'xorg-server/hw/xfree86/os-support/bsd/ppc_video.c')
| -rw-r--r-- | xorg-server/hw/xfree86/os-support/bsd/ppc_video.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/xorg-server/hw/xfree86/os-support/bsd/ppc_video.c b/xorg-server/hw/xfree86/os-support/bsd/ppc_video.c new file mode 100644 index 000000000..06be654e1 --- /dev/null +++ b/xorg-server/hw/xfree86/os-support/bsd/ppc_video.c @@ -0,0 +1,171 @@ +/* + * 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. + * + */ + +#ifdef HAVE_XORG_CONFIG_H +#include <xorg-config.h> +#endif + +#include <X11/X.h> +#include "xf86.h" +#include "xf86Priv.h" + +#include "xf86_OSlib.h" +#include "xf86OSpriv.h" + +#include "bus/Pci.h" + +#ifndef MAP_FAILED +#define MAP_FAILED ((caddr_t)-1) +#endif + + +/***************************************************************************/ +/* Video Memory Mapping section */ +/***************************************************************************/ + +#ifndef __OpenBSD__ +#define DEV_MEM "/dev/mem" +#else +#define DEV_MEM "/dev/xf86" +#endif + +static pointer ppcMapVidMem(int, unsigned long, unsigned long, int flags); +static void ppcUnmapVidMem(int, pointer, unsigned long); + +Bool xf86EnableIO(void); +void xf86DisableIO(void); + +void +xf86OSInitVidMem(VidMemInfoPtr pVidMem) +{ + pVidMem->linearSupported = TRUE; + pVidMem->mapMem = ppcMapVidMem; + pVidMem->unmapMem = ppcUnmapVidMem; + pVidMem->initialised = TRUE; + xf86EnableIO(); +} + + +_X_EXPORT volatile unsigned char *ioBase = MAP_FAILED; + +static pointer +ppcMapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int flags) +{ + int fd = xf86Info.screenFd; + pointer base; +#ifdef DEBUG + xf86MsgVerb(X_INFO, 3, "mapVidMem %lx, %lx, fd = %d", + Base, Size, fd); +#endif + + base = mmap(0, Size, + (flags & VIDMEM_READONLY) ? + PROT_READ : (PROT_READ | PROT_WRITE), + MAP_SHARED, fd, Base); + if (base == MAP_FAILED) + FatalError("%s: could not mmap screen [s=%x,a=%x] (%s)", + "xf86MapVidMem", Size, Base, strerror(errno)); + + return base; +} + +static void +ppcUnmapVidMem(int ScreenNum, pointer Base, unsigned long Size) +{ + munmap(Base, Size); +} + +_X_EXPORT int +xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf, + int Len) +{ + int rv; + static int kmem = -1; + + if (kmem == -1) { + kmem = open(DEV_MEM, 2); + if (kmem == -1) { + FatalError("xf86ReadBIOS: open %s", DEV_MEM); + } + } + +#ifdef DEBUG + xf86MsgVerb(X_INFO, 3, "xf86ReadBIOS() %lx %lx, %x\n", + Base, Offset, Len); +#endif + + + lseek(kmem, Base + Offset, 0); + rv = read(kmem, Buf, Len); + + return rv; +} + +/***************************************************************************/ +/* Interrupt Handling section */ +/***************************************************************************/ + +_X_EXPORT Bool +xf86DisableInterrupts() +{ + + return(TRUE); +} + +_X_EXPORT void +xf86EnableInterrupts() +{ + + return; +} + +Bool xf86EnableIO() +{ + int fd = xf86Info.screenFd; + + xf86MsgVerb(X_WARNING, 3, "xf86EnableIO %d\n", fd); + if (ioBase == MAP_FAILED) + { + ioBase=mmap(NULL, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED, fd, + 0xf2000000); + xf86MsgVerb(X_INFO, 3, "xf86EnableIO: %08x\n", ioBase); + if (ioBase == MAP_FAILED) { + xf86MsgVerb(X_WARNING, 3, "Can't map IO space!\n"); + return FALSE; + } + } + return TRUE; +} + +void xf86DisableIO() +{ + + if (ioBase != MAP_FAILED) + { + munmap(__UNVOLATILE(ioBase), 0x10000); + ioBase = MAP_FAILED; + } +} + |