156 lines
4.6 KiB
C
156 lines
4.6 KiB
C
/*
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* Copyright 1997, 1998 by UCHIYAMA Yasushi
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of UCHIYAMA Yasushi not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. UCHIYAMA Yasushi makes no representations
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* about the suitability of this software for any purpose. It is provided
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* "as is" without express or implied warranty.
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*
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* UCHIYAMA YASUSHI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL UCHIYAMA YASUSHI BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*
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*/
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#ifdef HAVE_XORG_CONFIG_H
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#include <xorg-config.h>
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#endif
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#include <mach.h>
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#include <device/device.h>
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#include <mach/machine/mach_i386.h>
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#include <X11/X.h>
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#include "input.h"
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#include "scrnintstr.h"
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#include "xf86.h"
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#include "xf86Priv.h"
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#include "xf86_OSlib.h"
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#include "xf86OSpriv.h"
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/**************************************************************************
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* Video Memory Mapping section
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***************************************************************************/
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static pointer
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mapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int Flags)
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{
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mach_port_t device,mem_dev;
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memory_object_t mem_obj;
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kern_return_t err;
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vm_address_t addr=(vm_address_t)0;
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err = get_privileged_ports (NULL, &device);
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if( err )
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{
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errno = err;
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FatalError("xf86MapVidMem() can't get_privileged_ports. (%s)\n",strerror(errno));
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}
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err = device_open(device,D_READ|D_WRITE,"mem",&mem_dev);
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mach_port_deallocate (mach_task_self(), device);
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if( err )
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{
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errno = err;
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FatalError("xf86MapVidMem() can't device_open. (%s)\n",strerror(errno));
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}
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err = device_map(mem_dev,VM_PROT_READ|VM_PROT_WRITE, Base , Size ,&mem_obj,0);
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if( err )
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{
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errno = err;
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FatalError("xf86MapVidMem() can't device_map. (%s)\n",strerror(errno));
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}
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err = vm_map(mach_task_self(),
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&addr,
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Size,
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0, /* mask */
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TRUE, /* anywhere */
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mem_obj,
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(vm_offset_t)Base,
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FALSE, /* copy on write */
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VM_PROT_READ|VM_PROT_WRITE,
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VM_PROT_READ|VM_PROT_WRITE,
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VM_INHERIT_SHARE);
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mach_port_deallocate(mach_task_self(),mem_obj);
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if( err )
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{
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errno = err;
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FatalError("xf86MapVidMem() can't vm_map.(mem_obj) (%s)\n",strerror(errno));
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}
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mach_port_deallocate(mach_task_self(),mem_dev);
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if( err )
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{
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errno = err;
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FatalError("xf86MapVidMem() can't mach_port_deallocate.(mem_dev) (%s)\n",strerror(errno));
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}
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return (pointer)addr;
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}
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static void
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unmapVidMem(int ScreenNum,pointer Base,unsigned long Size)
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{
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kern_return_t err = vm_deallocate(mach_task_self(), (int)Base, Size);
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if( err )
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{
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errno = err;
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ErrorF("xf86UnMapVidMem: can't dealloc framebuffer space (%s)\n",strerror(errno));
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}
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return;
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}
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/**************************************************************************
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* I/O Permissions section
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***************************************************************************/
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/*
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* Due to conflicts with "compiler.h", don't rely on <sys/io.h> to declare
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* this.
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*/
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extern int ioperm(unsigned long __from, unsigned long __num, int __turn_on);
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Bool
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xf86EnableIO()
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{
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if (ioperm(0, 0x10000, 1)) {
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FatalError("xf86EnableIO: ioperm() failed (%s)\n", strerror(errno));
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return FALSE;
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}
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#if 0
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/*
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* Trapping disabled for now, as some VBIOSes (mga-g450 notably) use these
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* ports, and the int10 wrapper is not emulating them. (Note that it's
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* effectively what happens in the Linux variant too, as iopl() is used
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* there, making the ioperm() meaningless.)
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*
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* Reenable this when int10 gets fixed. */
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ioperm(0x40,4,0); /* trap access to the timer chip */
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ioperm(0x60,4,0); /* trap access to the keyboard controller */
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#endif
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return TRUE;
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}
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void
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xf86DisableIO()
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{
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ioperm(0,0x10000,0);
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return;
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}
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void
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xf86OSInitVidMem(VidMemInfoPtr pVidMem)
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{
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pVidMem->linearSupported = TRUE;
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pVidMem->mapMem = mapVidMem;
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pVidMem->unmapMem = unmapVidMem;
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pVidMem->initialised = TRUE;
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}
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