94 lines
3.1 KiB
C
94 lines
3.1 KiB
C
/*
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* Copyright 1997 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 "xf86.h"
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#include "xf86Priv.h"
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#include "xf86_OSlib.h"
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#define BIOS_SIZE 0x20000
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int
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xf86ReadBIOS(unsigned long Base, unsigned long Offset, unsigned char *Buf,
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int Len)
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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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vm_address_t addr = (vm_address_t) 0; /* serach starting address */
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kern_return_t err;
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err = get_privileged_ports(NULL, &device);
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if (err) {
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errno = err;
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FatalError("xf86ReadBIOS() can't get_privileged_ports. (%s)\n",
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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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errno = err;
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FatalError("xf86ReadBIOS() can't device_open. (%s)\n", strerror(errno));
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}
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err =
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device_map(mem_dev, VM_PROT_READ | VM_PROT_WRITE, Base, BIOS_SIZE,
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&mem_obj, 0);
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if (err) {
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errno = err;
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FatalError("xf86ReadBIOS() 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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BIOS_SIZE,
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0,
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TRUE,
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mem_obj,
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Base,
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FALSE,
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VM_PROT_READ | VM_PROT_WRITE,
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VM_PROT_READ | VM_PROT_WRITE, 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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errno = err;
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FatalError("xf86ReadBIOS() can't vm_map. (%s)\n", strerror(errno));
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}
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memcpy(Buf, (void *) ((int) addr + Offset), Len);
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err = vm_deallocate(mach_task_self(), addr, BIOS_SIZE);
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if (err) {
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errno = err;
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FatalError("xf86ReadBIOS() can't vm_deallocate. (%s)\n",
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strerror(errno));
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}
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return Len;
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}
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