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/*
* Copyright 1997 by UCHIYAMA Yasushi
*
* 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 name of UCHIYAMA Yasushi not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. UCHIYAMA Yasushi makes no representations
* about the suitability of this software for any purpose. It is provided
* "as is" without express or implied warranty.
*
* UCHIYAMA YASUSHI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL UCHIYAMA YASUSHI 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.
*
*/
/* $XFree86$ */
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include<mach.h>
#include<device/device.h>
#include<mach/machine/mach_i386.h>
#include <X11/X.h>
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86_OSlib.h"
#define BIOS_SIZE 0x20000
int
xf86ReadBIOS(unsigned long Base,unsigned long Offset,unsigned char *Buf,int Len)
{
mach_port_t device,iopl_dev;
memory_object_t iopl_mem;
vm_address_t addr = (vm_address_t)0; /* serach starting address */
kern_return_t err;
err = get_privileged_ports (NULL, &device);
if( err )
{
errno = err;
FatalError("xf86ReadBIOS() can't get_privileged_ports. (%s)\n",strerror(errno));
}
err = device_open(device,D_READ|D_WRITE,"iopl",&iopl_dev);
mach_port_deallocate (mach_task_self (), device);
if( err )
{
errno = err;
FatalError("xf86ReadBIOS() can't device_open. (%s)\n",strerror(errno));
}
err = device_map(iopl_dev,VM_PROT_READ|VM_PROT_WRITE, Base , BIOS_SIZE ,&iopl_mem,0);
if( err )
{
errno = err;
FatalError("xf86ReadBIOS() can't device_map. (%s)\n",strerror(errno));
}
err = vm_map(mach_task_self(),
&addr,
BIOS_SIZE,
0,
TRUE,
iopl_mem,
Base,
FALSE,
VM_PROT_READ|VM_PROT_WRITE,
VM_PROT_READ|VM_PROT_WRITE,
VM_INHERIT_SHARE);
mach_port_deallocate(mach_task_self(),iopl_mem);
if( err )
{
errno = err;
FatalError("xf86ReadBIOS() can't vm_map. (%s)\n",strerror(errno));
}
memcpy(Buf,(void*)((int)addr + Offset), Len);
err = vm_deallocate(mach_task_self(), addr, BIOS_SIZE);
if( err )
{
errno = err;
FatalError("xf86ReadBIOS() can't vm_deallocate. (%s)\n",strerror(errno));
}
return Len;
}
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