1 dawes 1.1 /*
 2            * Copyright 1997 by UCHIYAMA Yasushi
 3            *
 4            * Permission to use, copy, modify, distribute, and sell this software and its
 5            * documentation for any purpose is hereby granted without fee, provided that
 6            * the above copyright notice appear in all copies and that both that
 7            * copyright notice and this permission notice appear in supporting
 8            * documentation, and that the name of UCHIYAMA Yasushi not be used in
 9            * advertising or publicity pertaining to distribution of the software without
10            * specific, written prior permission.  UCHIYAMA Yasushi makes no representations
11            * about the suitability of this software for any purpose.  It is provided
12            * "as is" without express or implied warranty.
13            *
14            * UCHIYAMA YASUSHI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
15            * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
16            * EVENT SHALL UCHIYAMA YASUSHI BE LIABLE FOR ANY SPECIAL, INDIRECT OR
17            * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
18            * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
19            * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
20            * PERFORMANCE OF THIS SOFTWARE.
21            *
22 dawes 1.1  */

23 tsi   1.2 /* $XFree86: xc/programs/Xserver/hw/xfree86/os-support/hurd/bios_mmap.c,v 1.1tsi Exp $ */

24 dawes 1.1 #include<mach.h>
25           #include<device/device.h>
26           

27 tsi   1.2 #include <X11/X.h>

28 dawes 1.1 
29           #include "xf86.h"
30           #include "xf86Priv.h"
31           #include "xf86_OSlib.h"
32           
33           #define BIOS_SIZE 0x20000
34           
35           int 
36           xf86ReadBIOS(unsigned long Base,unsigned long Offset,unsigned char *Buf,int Len)
37           {
38               mach_port_t device,iopl_dev;
39               memory_object_t iopl_mem;
40               vm_address_t addr = (vm_address_t)0; /* serach starting address */
41               kern_return_t err;
42           
43           
44               err = get_privileged_ports (NULL, &device);
45               if( err )
46               {
47           	errno = err;
48           	FatalError("xf86ReadBIOS() can't get_privileged_ports. (%s)\n",strerror(errno));
49 dawes 1.1     }
50               err = device_open(device,D_READ|D_WRITE,"iopl",&iopl_dev);
51               mach_port_deallocate (mach_task_self (), device);
52               if( err )
53               {
54           	errno = err;
55           	FatalError("xf86ReadBIOS() can't device_open. (%s)\n",strerror(errno));
56               }
57               err = device_map(iopl_dev,VM_PROT_READ|VM_PROT_WRITE, Base , BIOS_SIZE ,&iopl_mem,0);
58               if( err )
59               {
60           	errno = err;
61           	FatalError("xf86ReadBIOS() can't device_map. (%s)\n",strerror(errno));
62               }
63               err = vm_map(mach_task_self(),
64           		 &addr,
65           		 BIOS_SIZE,
66           		 0,
67           		 TRUE,
68           		 iopl_mem,
69           		 Base,
70 dawes 1.1 		 FALSE,
71           		 VM_PROT_READ|VM_PROT_WRITE,
72           		 VM_PROT_READ|VM_PROT_WRITE,
73           		 VM_INHERIT_SHARE);
74               mach_port_deallocate(mach_task_self(),iopl_mem);
75               if( err )
76               {
77           	errno = err;
78           	FatalError("xf86ReadBIOS() can't vm_map. (%s)\n",strerror(errno));
79               }
80           
81               memcpy(Buf,(void*)((int)addr + Offset), Len);
82               
83               err = vm_deallocate(mach_task_self(), addr, BIOS_SIZE);
84               if( err )
85               {
86           	errno = err;
87           	FatalError("xf86ReadBIOS() can't vm_deallocate. (%s)\n",strerror(errno));
88               }
89               
90               return Len;
91 dawes 1.1 }