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;
}
/**************************************************************************
* Video Memory Mapping section
***************************************************************************/
static pointer
mapVidMem(int ScreenNum, unsigned long Base, unsigned long Size, int Flags)
{
mach_port_t device,iopl_dev;
memory_object_t iopl_mem;
kern_return_t err;
vm_address_t addr=(vm_address_t)0;
err = get_privileged_ports (NULL, &device);
if( err )
{
errno = err;
FatalError("xf86MapVidMem() 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("xf86MapVidMem() can't device_open. (%s)\n",strerror(errno));
}
err = device_map(iopl_dev,VM_PROT_READ|VM_PROT_WRITE, Base , Size ,&iopl_mem,0);
if( err )
{
errno = err;
FatalError("xf86MapVidMem() can't device_map. (%s)\n",strerror(errno));
}
err = vm_map(mach_task_self(),
&addr,
Size,
0, /* mask */
TRUE, /* anywhere */
iopl_mem,
(vm_offset_t)Base,
FALSE, /* copy on write */
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("xf86MapVidMem() can't vm_map.(iopl_mem) (%s)\n",strerror(errno));
}
mach_port_deallocate(mach_task_self(),iopl_dev);
if( err )
{
errno = err;
FatalError("xf86MapVidMem() can't mach_port_deallocate.(iopl_dev) (%s)\n",strerror(errno));
}
return (pointer)addr;
}
