| 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 | */ |
| 23 | #ifdef HAVE_XORG_CONFIG_H |
| 24 | #include <xorg-config.h> |
| 25 | #endif |
| 26 | |
| 27 | #include<mach.h> |
| 28 | #include<device/device.h> |
| 29 | #include<mach/machine/mach_i386.h> |
| 30 | #include <hurd.h> |
| 31 | |
| 32 | #include <X11/X.h> |
| 33 | |
| 34 | #include "xf86.h" |
| 35 | #include "xf86Priv.h" |
| 36 | #include "xf86_OSlib.h" |
| 37 | |
| 38 | #define BIOS_SIZE 0x20000 |
| 39 | |
| 40 | int |
| 41 | xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf, |
| 42 | int Len) |
| 43 | { |
| 44 | mach_port_t device, mem_dev; |
| 45 | memory_object_t mem_obj; |
| 46 | vm_address_t addr = (vm_address_t) 0; /* serach starting address */ |
| 47 | kern_return_t err; |
| 48 | |
| 49 | err = get_privileged_ports(NULL, &device); |
| 50 | if (err) { |
| 51 | errno = err; |
| 52 | FatalError("xf86ReadBIOS() can't get_privileged_ports. (%s)\n", |
| 53 | strerror(errno)); |
| 54 | } |
| 55 | err = device_open(device, D_READ | D_WRITE, "mem", &mem_dev); |
| 56 | mach_port_deallocate(mach_task_self(), device); |
| 57 | if (err) { |
| 58 | errno = err; |
| 59 | FatalError("xf86ReadBIOS() can't device_open. (%s)\n", strerror(errno)); |
| 60 | } |
| 61 | err = |
| 62 | device_map(mem_dev, VM_PROT_READ | VM_PROT_WRITE, Base, BIOS_SIZE, |
| 63 | &mem_obj, 0); |
| 64 | if (err) { |
| 65 | errno = err; |
| 66 | FatalError("xf86ReadBIOS() can't device_map. (%s)\n", strerror(errno)); |
| 67 | } |
| 68 | err = vm_map(mach_task_self(), |
| 69 | &addr, |
| 70 | BIOS_SIZE, |
| 71 | 0, |
| 72 | TRUE, |
| 73 | mem_obj, |
| 74 | Base, |
| 75 | FALSE, |
| 76 | VM_PROT_READ | VM_PROT_WRITE, |
| 77 | VM_PROT_READ | VM_PROT_WRITE, VM_INHERIT_SHARE); |
| 78 | mach_port_deallocate(mach_task_self(), mem_obj); |
| 79 | if (err) { |
| 80 | errno = err; |
| 81 | FatalError("xf86ReadBIOS() can't vm_map. (%s)\n", strerror(errno)); |
| 82 | } |
| 83 | |
| 84 | memcpy(Buf, (void *) ((int) addr + Offset), Len); |
| 85 | |
| 86 | err = vm_deallocate(mach_task_self(), addr, BIOS_SIZE); |
| 87 | if (err) { |
| 88 | errno = err; |
| 89 | FatalError("xf86ReadBIOS() can't vm_deallocate. (%s)\n", |
| 90 | strerror(errno)); |
| 91 | } |
| 92 | |
| 93 | return Len; |
| 94 | } |